Handheld power tool, gear adjusting mechanism of power tool, power tool, control method for power tool, and use method for power tool

Abstract

The present application provides a handheld power tool, a handheld power tool apparatus, a control method for a handheld power tool, and a use method for a handheld power tool, which are used for improving the working performance of power tools. Provided in a first aspect of the present application is a handheld power tool, the power tool being used for at least one of electric screwdriving, electric drilling, and tapping; the power tool comprises a power tool main body, and the power tool main body comprises a first housing and a driving mechanism, the first housing being to be handheld by a user; an output end of the driving mechanism is used for connecting to a tool head and driving the tool head to rotate, and the driving mechanism is further configured to be capable of synchronously moving with the tool head as a whole with respect to the first housing.

Description

Hand-held power tool, gear shifting mechanism of power tool, power tool, control method of power tool, method of using power tool

[0001] This application claims priority to the following applications: Chinese Patent Application No. 2024110893707, filed on August 9, 2024, entitled "Electric Tool and Control Method Thereof"; Chinese Patent Application No. 2025102372327, filed on March 1, 2025, entitled "Hand-Held Power Tool, Hand-Held Power Tool Device, Control Method, and Method of Using Hand-Held Power Tool Device"; Chinese Patent Application No. 2025107477077, filed on June 5, 2025, entitled "Gear Shifting Mechanism and Electric Tool Thereof"; and Chinese Patent Application No. 2025108273560, filed on June 19, 2025, entitled "Hand-Held Power Tool". TECHNICAL FIELD

[0002] The present application relates to the technical field of hand-held power tools, and in particular to a hand-held power tool, a gear shifting mechanism of a power tool, a power tool, a control method of a power tool, and a method of using a power tool. BACKGROUND

[0003] In the field of mechanical processing, power tools are commonly used tools and are widely used in drilling, tapping, and screwing operations. However, when existing power tools are used for drilling or tapping operations, the bit is easily shaken and deviates from the intended feed path, resulting in a deviation from the intended angle or poor quality of the tapped hole, which can also damage the threaded hole, increasing production and time costs. SUMMARY

[0004] The first aspect of the present application provides a hand-held power tool for at least one of electric tapping, electric drilling, and tapping, the power tool having an axial direction and a front-rear direction parallel to the axial direction, comprising: a first housing for a user to hold; a second housing at least partially nested in the first housing and the second housing being in sliding connection with the first housing and the second housing being extendable and retractable relative to the first housing along the axial direction; a drive mechanism at least partially received in the second housing, the drive mechanism having an output end for connecting with a bit and driving the bit to rotate; the drive mechanism and the second housing being configured to be synchronously extendable and retractable relative to the first housing along the axial direction as a whole with the bit.

[0005] The second aspect of the present application provides a gear adjusting mechanism applied to a power tool, characterized in that: the power tool further comprises a housing, a speed reducer arranged in the housing, and a motor arranged in the housing and in transmission connection with the speed reducer; the gear adjusting mechanism is arranged in the housing, and comprises a first movable member, a pushing structure, and a first action member; the first movable member is movably arranged in the housing; the pushing structure is connected with the first movable member and is configured to be capable of pushing the first movable member to move relative to the housing along a first direction under force; the first action member is arranged on a side of the first movable member away from the pushing structure and is configured to be capable of being moved by the first movable member when the first movable member is moved by the pushing structure relative to the housing along the first direction; the speed reducer comprises a trigger member; when the first action member moves the first action member along the first direction, the first action member can push the trigger member to switch the power tool from a first gear to a second gear; the gear adjusting mechanism further comprises a detection assembly arranged in the housing and in electrical connection with the motor; the detection assembly is configured to be capable of detecting a third position of the first movable member when the first movable member moves along the first direction to the third position and adjusting an output mode of the motor according to the third position to switch the power tool from the second gear to a third gear; and the first direction is parallel to an axial direction of the housing.

[0006] The third aspect of the present application provides a power tool, comprising: a main body mechanism, the main body mechanism comprising a housing, a driving mechanism arranged in the housing, a fourth groove arranged on a first surface of the housing, the fourth groove being used for placing a first tool accessory, and the driving mechanism being used for driving the first tool accessory to move; a first component spliced with the housing, the first component comprising a first channel; wherein the first tool accessory can move in the first channel; when the first tool accessory contacts a workpiece surface, a first force applied by a user on the housing acts on the housing, and the housing and the first component move in an axial direction of the housing to make the first component contact the workpiece surface.

[0007] The fourth aspect of the present application provides a control method of a power tool, the power tool comprising a display screen, the control method comprising: receiving a zeroing signal, the zeroing signal being used for displaying a real-time relative distance value as 0 on the display screen; and in response to the zeroing signal, controlling the display screen to display the real-time relative distance value as 0.

[0008] The fifth aspect of the present application provides a use method of a power tool, the power tool further comprising a display screen and a zeroing button, the zeroing button being used for displaying a real-time relative distance value as 0 on the display screen; the use method comprising the following steps: holding the power tool and supporting a support frame on a machining surface; pressing the zeroing button to make the display screen display the real-time relative distance value as 0; pressing an operation key to start a motor; displaying a real-time relative distance on the display screen along with movement of a tool head; and releasing the operation key to stop the motor.

[0009] Beneficial effects: the electric tool provided by the application is usually used with a support frame connected to the first shell. By configuring the driving mechanism to be able to move synchronously with the bit as a whole relative to the first shell, when the bit abuts against the machining surface, the first shell and the support frame will move towards the machining surface under the action of the hand force until the support frame abuts against the machining surface, so that the electric tool body 1a is fixed to the machining surface under the action of the hand force, so that the electric tool body 1a is not easy to shake and the bit is not easy to shake, so that the bit is not easy to deviate from the expected feeding route, and the drilled hole is not easy to deviate from the expected angle or the quality of the tapped hole is high. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1-1 is a structural schematic diagram of the electric tool of embodiment one provided by the application; Fig. 1-2 is a structural schematic diagram of the partial structure explosion of the electric tool of embodiment one provided by the application;

[0011] Fig. 1-3 is an explosion schematic diagram of the electric tool of embodiment one provided by the application;

[0012] Fig. 1-4 is a structural schematic diagram of the partial structure explosion of the electric tool of embodiment one provided by the application;

[0013] Fig. 1-5 is an explosion schematic diagram of the partial structure of the electric tool of embodiment one provided by the application;

[0014] Fig. 1-6 is a structural schematic diagram of the first reinforcing shell and the second movable piece of the electric tool of embodiment one provided by the application;

[0015] Fig. 1-7 is a sectional view of the electric tool of embodiment one provided by the application without an auxiliary handle;

[0016] Fig. 1-8 is a structural schematic diagram of the first shell of the electric tool of embodiment one provided by the application;

[0017] Fig. 1-9 is a structural schematic diagram of the partial structure explosion of the electric tool of embodiment one provided by the application;

[0018] Fig. 1-10 is a sectional view of the electric tool of embodiment two provided by the application;

[0019] Fig. 1-11 is an enlarged schematic diagram of A of Fig. 1-10;

[0020] Fig. 1-12 is a structural schematic diagram of the second movable piece of the electric tool of embodiment two provided by the application;

[0021] Fig. 1-13 is another perspective sectional view of the partial structure of the electric tool of embodiment two provided by the application;

[0022] Fig. 1-14 is a schematic view of the tool bit of the power tool device of the present application abutting against a work surface;

[0023] Fig. 1-15 is a schematic view of the power tool of the third embodiment of the present application;

[0024] Fig. 1-16 is a cross-sectional view of the power tool of the third embodiment of the present application;

[0025] Fig. 1-17 is another cross-sectional view of the power tool of the third embodiment of the present application;

[0026] Fig. 1-18 is an enlarged view of B in Fig. 1-17;

[0027] Fig. 1-19 is a schematic view of the power tool of the fourth embodiment of the present application;

[0028] Fig. 1-20 is a cross-sectional view of the power tool of the fourth embodiment of the present application;

[0029] Fig. 1-21 is a schematic view of the support frame of the first embodiment of the present application;

[0030] Fig. 1-22 is a schematic view of the support frame of the second embodiment of the present application;

[0031] Fig. 1-23 is a schematic view of the support frame of the third embodiment of the present application;

[0032] Fig. 1-24 is a schematic view of the support frame of the fourth embodiment of the present application;

[0033] Fig. 1-25 is a schematic view of the support frame of the fifth embodiment of the present application;

[0034] Fig. 1-26 is a schematic view of the support frame of the sixth embodiment of the present application;

[0035] Fig. 1-27 is a schematic view of the support frame of the seventh embodiment of the present application;

[0036] Fig. 1-28 is a schematic view of the support frame of the eighth embodiment of the present application;

[0037] Fig. 2-1 is a schematic view of the power tool of the fifth embodiment of the present application;

[0038] Fig. 2-2 is a schematic view of the power tool of the fifth embodiment of the present application in a reference state;

[0039] Fig. 2-3 is a schematic view of a part of the power tool of the fifth embodiment of the present application;

[0040] Fig. 2-4 is a schematic view of the front side of the power tool of the fifth embodiment of the present application with a part of the reinforcing shell removed;

[0041] Fig. 2-5 is a schematic view of the front side of the power tool of embodiment five of the present application, with the reinforcing shell and the first housing removed;

[0042] Fig. 2-6 is an exploded view of the power tool of embodiment five of the present application;

[0043] Fig. 2-7 is a schematic view of the display interface of the power tool of embodiment five of the present application;

[0044] Fig. 2-8 is an exploded view of the power tool of embodiment five of the present application;

[0045] Fig. 2-9 is an exploded view of the power tool of embodiment five of the present application;

[0046] Fig. 2-10 is a schematic view of the connecting portion of the support frame of embodiment nine of the present application;

[0047] Fig. 2-11 is a schematic view of the power tool of embodiment five of the present application;

[0048] Fig. 2-12 is a schematic view of the second housing of the power tool of embodiment five of the present application;

[0049] Fig. 3-1 is a schematic view of the power tool of the present application;

[0050] Fig. 3-2 is an exploded view of the power tool of Fig. 3-1;

[0051] Fig. 3-3 is a cross-sectional view of the power tool of Fig. 3-2;

[0052] Fig. 3-4 is a cross-sectional view of the power tool of Fig. 3-1 locking the second housing;

[0053] Fig. 3-5 is a cross-sectional view of the power tool of Fig. 3-1 locking the support frame;

[0054] Fig. 3-6 is a schematic view of the power tool of Fig. 3-1;

[0055] Fig. 3-7 is an exploded view of the support frame, the first movable member, and the auxiliary housing of the power tool of Fig. 3-1;

[0056] Fig. 3-8 is a schematic view of the first movable member of the power tool of Fig. 3-1;

[0057] Fig. 4-1 is a schematic view of the power tool of one embodiment of the present application;

[0058] Fig. 4-2 is a schematic view of the second housing of the power tool of Fig. 4-1 extending relative to the first housing;

[0059] Fig. 4-3 is a schematic view of the gear shifting mechanism of one embodiment of the present application located within the housing;

[0060] Fig. 4-4 is an exploded view of the gear shifting mechanism of Fig. 4-3 and a portion of the power tool;

[0061] Fig. 4-5 is a schematic view of the gear shifting mechanism of Fig. 4-4 when the power tool is in a first gear;

[0062] Fig. 4-6 is a schematic view of the gear shifting mechanism of Fig. 4-5 when the power tool is in a second gear;

[0063] Fig. 4-7 is a schematic view of the gear shifting mechanism of Fig. 4-6 when the power tool is in a third gear;

[0064] Fig. 4-8 is a schematic view of the housing of Fig. 4-7;

[0065] Fig. 4-9 is a schematic view of the housing of Fig. 4-8;

[0066] Fig. 4-10 is a schematic view of the gear shifting mechanism of Fig. 4-5;

[0067] Fig. 4-11 is a schematic view of the first movable member of Fig. 4-10;

[0068] Fig. 4-12 is a schematic view of the resilient member of Fig. 4-10;

[0069] Fig. 4-13 is a schematic view of the first movable member of Fig. 4-10;

[0070] Fig. 4-14 is a schematic view of the gear shifting mechanism of another embodiment of the present application;

[0071] Fig. 5-1 is a schematic view of one embodiment of a power tool of the present application;

[0072] Fig. 5-2 is a schematic view of another embodiment of a power tool of the present application;

[0073] Fig. 5-3 is a schematic view of a third embodiment of a power tool of the present application;

[0074] Fig. 5-4 is a schematic view of one embodiment of a first component of a power tool of the present application;

[0075] Fig. 5-5 is a schematic view of another embodiment of a first component of a power tool of the present application;

[0076] Fig. 5-6 is a schematic view of a third embodiment of a first component of a power tool of the present application;

[0077] Fig. 5-7 is a structural schematic diagram of the electric power tool according to the present application;

[0078] Fig. 5-8 is a structural schematic diagram of the electric power tool according to the present application;

[0079] Fig. 5-9 is a structural schematic diagram of the electric power tool according to the present application;

[0080] Fig. 5-10 is a flowchart of a control method according to the present application;

[0081] Fig. 5-11 is a flowchart of a control method according to the present application;

[0082] Fig. 5-12 is a structural schematic diagram of an electric power tool according to the present application.

[0083] Reference signs: 1, power tool; 1a, power tool body; 10, first housing; 10a, first housing side shell; 101a, convex shell; 10b, hand-held shell; 10c, base; 10d, first reinforcing shell; 101d, mounting hole; 102d, soft rubber pad; 10e, second reinforcing shell; 1000, first opening; 1001, third opening; 1002, first face; 1003, third face; 1004, sliding groove; 1005, fifth opening; 1006, first clamping opening; 1007, first air inlet; 1008, first air outlet; 1009, fourth face; 11, driving mechanism; 1101, chuck; 1102, speed reducer; 1102a, speed reducer body; 1102b, speed change dial; 1103, motor; 1104, clutch knob; 1105, cooling fan; 12, second housing; 12a, second housing body; 12b, connecting shell; 121b, third clamping groove; 122b, gear shifting part; 123b, locking part; 1200, second opening; 1201, fourth opening; 1202, protruding part; 1202a, first protruding part; 1202b, second protruding part; 1203, sixth opening; 1204, mounting bracket; 1205, connecting convex part; 1205a, connecting hole; 1205b, connecting shaft; 1206, second face; 1207, first wiring channel; 12071, first through opening; 1208, mounting part; 1209, seventh opening; 1210, eighth opening; 1211, second air inlet; 1212, second air outlet; 1213, insertion slot; 1214, ninth opening; 1215, first clamping groove; 1216, first mounting opening; 1217, reinforcing part; 13, gear shifting assembly; 1301, gear shifting piece; 1301a, gear shifting knob; 13011, first clamping tooth; 1302, first movable piece; 13021, clamping strip; 13022, second clamping tooth; 1303, third elastic piece; 1304, second position sensor; 14, locking structure; 1401, second movable piece; 1401a, second movable piece body; 14011, first clamping convex part; 14012, second clamping convex part; 14013, locking face; 14014, first through opening; 14015, first sensing part; 14016, locking slot; 14017, first guide face (original first arc face); 14018, first abutting face (original first inclined face); 1402, first recess; 1403, first locking convex part; 1404, locking cover; 1405, second reset piece; 15, guide structure; 1501, guide hole; 1502, guide shaft; 16, depth sensing assembly; 1601, first gear; 1602, depth sensor; 1603, rack; 1604, first circuit board; 17, elastic force adjusting structure; 1701, second clamping groove; 1702, elastic force adjusting piece; 18, display assembly; 1801, display screen; 18011, zero reset touch point; 1802, zero reset button; 19, depth adjusting assembly;1901, depth adjustment member; 19011, hand adjustment portion; 19012, trigger portion; 1902, depth adjustment sensor; 1903, second gear; 1904, display opening; 110, first elastic member; 111, control main plate; 111a, first sub-control plate; 111b, second sub-control plate; 112, first position sensor; 113, first containing space; 114, second containing space; 115, first movable cavity; 116, first cavity; 117, first connecting cavity; 118, first avoiding space; 119, first reset member; 119a, second elastic member; 120, battery; 121, trigger; 122, forward and reverse operation dial; 123, first magnet; 124, second containing cavity; 125, connecting through hole; 126, torque adjustment member; 126a, torque adjustment knob 126; 127, torque adjustment sensor; 128, sixth elastic member; 129, in-place member; 130, first clamping structure; 135, second clamping structure; 136, parameter adjustment knob; 137, parameter adjustment sensor; 138, tapping icon; 139, torque value; 140, cooling fin; 141, second shell tail; 142, fixing ring; 143, second containing groove; 144, first ventilation hole; 145 second ventilation hole; 146, third air inlet; 147, flow separation plate; 2a, support frame; 20, splicing portion; 201, force supporting portion; 202, first connecting structure; 202a, clamping hook; 2021a, clamping groove; 2022a, second guide surface; 202b, connecting protrusion; 203, sliding hole; 21, supporting portion; 21a, supporting leg; 211, supporting surface; 212, connecting surface; 213, cleaning hole; 214, observation hole; 22, through channel; 23, telescopic space; 24, fixing member; 20a, connecting portion, 25, first connecting wall; 26, second connecting wall; 27, third positioning structure; 27a, first positioning groove; 28, fourth positioning structure; 28a, second positioning groove; 29, first supporting structure; 251, first positioning protrusion; 252, first stop structure; 252a first protruding strip; 253, first extension hole; 254, first limiting structure; 254a, first recess; 261, second positioning protrusion; 262, second limiting structure; 262a, third protruding part; 263, second stop structure; 263a, second protruding strip; 264, second extension hole; 265, pointed structure; 267, reinforcing rib; 268, sixth protruding part; 269, connecting portion tail; 271, first alignment structure; 272, second alignment structure; 273, second shell front bottom wall; 274, second shell rear bottom wall; 275, linear bearing; 276, first notch; 3a, tool bit; 4a, auxiliary handle; 5a, machining surface; 10, first shell; 11f, first shell body; 111f, first notch; 12f, reinforcing shell; 121f, second mounting port; 12, second shell; 12a, second shell body; 211f, second notch;22f, auxiliary housing; 221, first locking convex; 2211, fifth surface; 2212, third guide surface; 222, boss; 223, first locking position; 224, auxiliary convex; 40, second movable piece; 41, first convex; 411, fourth guide surface; 412, sixth surface; 42, second movable piece body; 43, force receiving piece; 431, first limiting portion; 432, force receiving portion; 44, first detection position; 45, second convex; 451, fifth guide surface; 46, first guide convex; 2a, support frame; 71, second locking convex; 711, sixth guide surface; 72, first plug-in portion; 73, second plug-in portion; 74, second limiting portion; 75, second locking position; 76, first containing position; 22, through channel; 80, first mounting position; 90, second mounting position; 112, first position sensor; 321, reducer output end; 1-electric tool; 100e-main body mechanism; 101e-housing; 1011-driving mechanism; 1012-fourth groove; 1013-first surface of housing; 1013a-metal part; 1013b-buckle structure; 1014-second groove; 1015-electric wire; 1016-second surface of housing; 200-first part; 201e-first channel; 202e-supporting leg; 203e-first surface of first part; 203a-third groove;

[0084] 203b - buckle structure; 204 - reinforcing rib structure; 205A - support structure; 205B - support structure; 2051 - telescopic structure; 206 - first structure; 207 - support structure; 208a - opening and closing structure; 208b - opening structure; 208c - opening and closing structure; 300 - first tool accessory; 400 - depth sensor; 500 - third tool accessory; 600 - auxiliary handle; 700 - first knob; 800 - second knob. 500g, housing; 501, first sliding segment; 501a, first sliding groove; 506, third notch; 502, second sliding segment; 502a, second sliding groove; 5021, eighth guide surface; 50211, first end; 50212, second end; 503, third positioning groove; 504, third sliding groove; 505, sixth opening; 10, first housing; 12, second housing; 2a, support frame; 100g, gear shifting mechanism; 11g, first movable piece; 111g, first body; 112g, first positioning structure; 112a, third positioning protrusion; 1121, fourth protrusion; 1122, fifth protrusion; 1123, seventh guide surface; 11231, first side; 11232, second side; 113g, second action end; 114g, homing part; 115g, positioning space; 116g, first accommodating groove; 117g, connecting groove; 118g, sliding foot; 119g, second detection position; 12g, actuating structure; 13g, first action piece; 131, first action piece body; 1311, second positioning structure; 1311a, positioning hole; 13111, first hole; 13112, second hole; 132, first action end; 133, guide protrusion; 134, first limiting surface; 14g, second accommodating position; 15g, fifth elastic piece; 201g, trigger piece; b, first direction; 1304, second position sensor. DETAILED DESCRIPTION

[0085] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0086] It should be understood that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0087] It should also be understood that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present.

[0088] The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting thereof. As used in this description and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "comprising," "including," "containing" and "having" are intended to be open-ended terms.

[0089] It should also be further understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, and that the term "at least one of' denotes and encompasses any and all possible combinations of one or more of the associated listed items.

[0090] Please refer to the electric tools of Embodiment 1 to Embodiment 6, as shown in FIG. 1-1 to FIG. 5-12. Refer to FIG. 1-1 to FIG. 2-12.

[0091] The first aspect of the present application provides a handheld electric tool 1, which is used for at least one of an electric screwdriver, an electric drill and tapping, the electric tool 1 has an axial direction and a front-rear direction parallel to the axial direction, a first housing 10 for a user to hold; a second housing 12 is at least partially nested in the first housing 10, and the second housing 12 is in sliding connection with the first housing 10, and the second housing 12 is telescopic relative to the first housing 10 along the axial direction; a drive mechanism 11 is at least partially received in the second housing 12, and the output end of the drive mechanism 11 is connected with a tool bit 3a and drives the tool bit 3a to rotate; the drive mechanism 11 and the second housing 12 are configured to be synchronously telescopic with the tool bit 3a as a whole relative to the first housing 10 along the axial direction.

[0092] In some embodiments, the driving mechanism 11 generally comprises at least the motor 1103, and in other cases, the driving mechanism 11 can further comprise the chuck 1101 or the clutch structure or the speed reducer 1102 and / or the heat dissipation fan for dissipating heat from the motor 1103, and the like, which are not listed here. Generally, the output end of the driving mechanism 11 can comprise the chuck 1101 and the output end of the motor 1103, the chuck 1101 being connected to the output end of the motor 1103 (as shown in FIG. 1-20); or the output end of the driving mechanism 11 can further comprise the output end of the speed reducer 1102, the output end of the speed reducer 1102 being connected to the chuck 1101, and the output end of the motor 1103 being connected to the speed reducer 1102 (as shown in FIG. 1-3); or the output end of the driving mechanism 11 can further comprise the clutch structure, which is connected to the output end of the speed reducer 1102, and the like, other forms (as shown in FIG. 1-3). Of course, in other embodiments, the driving mechanism can be a driving mechanism of a transmission gear.

[0093] In some embodiments, the clutch structure generally comprises the clutch knob 1104 (as shown in FIG. 1-3), a spring (not shown in the drawings) and a ball (not shown in the drawings), the ball being connected to the output shaft of the speed reducer 1102, the torsional spring being sleeved on the output shaft of the speed reducer 1102 and having two ends connected to the clutch knob 1104, the clutch knob 1104 being sleeved on the output shaft of the speed reducer 1102, by rotating the clutch knob 1104, the pressure of the torsional spring on the ball can be changed, if the pressure of the torsional spring on the ball is not large enough, the ball will slip with the torsional spring, by rotating the clutch knob 1104, the torsional force of the output shaft of the speed reducer 1102 can be changed, and in turn the output torsional force of the bit 3a can be changed. Generally, the surface of the clutch knob 1104 is provided with a friction structure (not shown in the drawings), so that when the user rotates the clutch knob 1104, the friction force can be increased. In some embodiments, the chuck 1101 is arranged at the front end of the clutch knob 1104. The clutch structure is a technology, which is not described in detail here.

[0094] The bit 3a is generally at least one of a screwdriver bit 3a, a drill bit, and a tap bit, and the bit 3a can also be referred to as a tool.

[0095] The electric wrench generally refers to the use of the power tool 1 for driving screws.

[0096] It should be noted that when the user uses the electric tool 1 to screw, drill or tap, the user can choose to lock the movement of the driving mechanism 11 and the second housing 12 relative to the first housing 10, so that the working mode of the electric tool 1 is almost the same as that of the conventional electric tool 1 (the driving mechanism 11 is not movable relative to the first housing 10). When the electric tool is in the screwing mode, as shown in FIG. 4-1, the second housing is retracted into the first housing, and the support frame is not used. As shown in FIGS. 3-2 and 4-1, the second movable member (40) (1401) is in the locked position, at this time, the second housing is retracted into the first housing, and the electric tool can be used for screwing. As shown in FIGS. 4-2 and 3-2, the second movable member (40) (1401) is in the unlocked state, at this time, the movement of the second housing relative to the first housing can be unlocked, and the electric tool can be used for drilling or tapping.

[0097] Generally, when the user uses the electric tool 1 to screw, the user usually needs to lock the movement of the second housing 12 relative to the first housing 10, so as to lock the movement of the driving mechanism 11 relative to the first housing 10. When the tool bit 3a screws, the entire electric tool 1 (including the tool bit, the first housing 10 and the second housing 12 and the driving mechanism 11) moves as a whole relative to the working surface 5a (at this time, the second housing is retracted into the first housing)

[0098] When the user uses the electric tool 1 to drill or tap, the support frame is usually used. The user can choose to unlock the movement of the second housing 12 relative to the first housing 10, so as to unlock the movement of the driving mechanism 11 relative to the first housing 10. When the tool bit 3a feeds, the driving mechanism 11 and the second housing 12 can move as a whole relative to the first housing 10. Of course, the user can also choose to lock the movement of the second housing 12 relative to the first housing 10 to drill or tap, which is almost the same as the working mode of the conventional electric tool 1.

[0099] In some embodiments, the tool bit 3a moves in the feeding direction or the retracting direction. The feeding direction of the tool bit 3a is generally moving along the axial direction of the tool bit 3a towards the working surface 5a, and the retracting direction is opposite to the feeding direction. In this embodiment, the axial direction of the tool bit is consistent with the axial direction of the electric tool 1. Generally, the feeding movement and the retracting movement of the tool bit 3a are straight line movements. When the electric tool 1 is used to screw, the working surface 5a refers to the surface of the target object into which the screw is to be screwed, such as the surface of a wooden board into which the screw is to be screwed, which is the working surface 5a. When the electric tool 1 is used to drill or tap, the working surface 5a refers to the surface of the wooden board to be drilled or tapped. Of course, the working surface 5a is not limited to the wooden board, and the surface to be screwed or drilled or tapped can also be referred to as the working surface 5a (also referred to as the workpiece surface).

[0100] In the field of mechanical processing, tapping and drilling are common operations, but the traditional electric tool 1 has many shortcomings. Generally, a hole needs to be drilled first, and then a tap head 3a is used to tap the thread. The tapping process requires high stability of the tap head 3a. Once the tap head 3a shakes, its axial direction will deviate from the axial direction of the hole, causing the feed path to deviate, and the quality of the tapped thread hole will be poor. In addition, when drilling, the ordinary electric tool 1 only relies on visual inspection to determine the hole angle, and the error of the drilled hole angle is large.

[0101] The electric tool body 1a of the present application can be used in cooperation with the support frame 2a to effectively solve the above problems. The support frame 2a has good support effect. After the user installs it on the electric tool body 1a, the electric tool 1 is not easy to shake during processing, and the axial direction of the tap head 3a can be accurately aligned with the axial direction of the hole for feeding, avoiding deviation from the intended feed path, greatly reducing the risk of tapping the thread or drilling the hole deviating from the intended angle. In addition, as shown in FIGS. 1-21 to 1-28, the end of the support frame 2a away from the first housing 10 is easily set to various angles, which can assist the electric tool 1 to work stably when drilling holes at specific angles, and drill holes that meet the requirements.

[0102] The specific operation process is as follows: when the user drills a hole or taps a thread hole, the support frame 2a is first connected to the first housing 10, and the tap head 3a is installed on the output end of the driving mechanism 11, generally through the chuck 1101 to achieve connection, and the tap head 3a at least partially exposes the end of the support frame 2a away from the first housing 10.

[0103] When the user holds the first housing 10 and presses the tap head 3a against the processing surface 5a, since the second housing 12 is slidable relative to the first housing 10, under the action of the holding force, the first housing 10 and the support frame 2a will move synchronously relative to the second housing 12 as a whole towards the direction close to the processing surface 5a until the support frame 2a abuts against the processing surface 5a. Subsequently, the user can apply a force to the second housing 12 through the auxiliary handle 4a, and under the driving of the driving mechanism 11 output end, the tap head 3a, the driving mechanism 11, and the second housing 12 as a whole move relative to the first housing 10 along the axial direction until the hole is drilled or tapped. The present embodiment makes use of the stabilizing effect of the support frame 2a to make the tap head 3a not easy to shake during processing relative to the processing surface 5a, and can strictly follow the intended feed path for feeding, and is not easy to deviate from the intended feed path.

[0104] The traditional electric tool 1 only contacts the machining surface 5a with the end surface of the elongated tool bit 3a in the drilling or tapping mode. When the user holds the electric tool 1, the tool bit 3a will shake with the hand of the user, resulting in a large deviation of the drilled hole angle. Since the tool bit 3a is easy to shake, the axial direction of the tool bit 3a cannot be aligned with the through hole, the tapped hole is easy to be damaged, and even the tool bit 3a is easy to break during the machining process. The electric tool 1 of the present application is used with the support frame 2a, which greatly improves the stability and safety.

[0105] The support plane of the support frame 2a of the present embodiment can be determined by a plurality of support rods, or a connecting surface 212 or a connecting wall end surface formed in the circumferential direction (the connecting surface 212 can be a closed connecting surface 212 or not, as shown in FIGS. 1-21 to 1-28, the connecting surface 212 is not closed). Generally, three points can determine a support plane, which can not be a solid support surface 211, but a virtual support surface 211 determined by three points, or a solid support surface 211 structure provided with a hole (as shown in FIG. 1-23). If it is a virtual support surface 211 determined by three points, the number of support rods is generally one or more (another support point is provided by the tool bit 3a, as shown in FIG. 1-28). This design not only provides stable support, but also plays a protective role when the tool breaks and flies out, effectively avoiding injury to the user, and significantly improving the safety performance.

[0106] In some cases, the second elastic member 119a provided on the electric tool 1 can exert a force on the tool bit 3a towards the machining surface 5a, so that the tool bit 3a is tightly pressed against the machining surface 5a. At this time, even if the support frame 2a has only two support rods, a better support effect can be obtained, and the electric tool 1 is not easy to shake. In contrast, the traditional electric tool 1 only contacts the machining surface 5a with the end surface of the tool bit 3a, and the support surface 211 is small, so the electric tool 1 is easy to shake, which causes the tool bit 3a to shake, and the tool bit 3a cannot follow the expected feed path.

[0107] Even without the action of the second elastic member 119a, the design of the support surface 211 determined by a plurality of support legs 21a or the end surface of the circumferentially surrounding connecting surface 212 makes the support effect much better than the traditional electric tool 1 which only relies on the end surface of the tool bit 3a for support.

[0108] The required torque for tapping operation is large, and the tool bit 3a is more likely to break in this case. The electric tool 1 of the present application is used with the support frame 2a, and the safety performance is greatly improved, which has the functions of electric tapping, electric drilling and tapping. The traditional electric tool 1 is difficult to integrate these three functions due to the problems of easy shaking of the tool bit 3a, poor safety performance, etc., which brings inconvenience to the user.

[0109] In addition, the electric tool 1 of the present application is of a hand-held design, which is convenient for users to carry and is very suitable for home use. In some embodiments, when the support frame 2a is mounted on the first housing 10 (electric tool main body 1a), the end face of the support frame 2a away from the first housing 10 can be provided with an anti-skid pad (not shown in the drawings), so that the support frame 2a is not easy to slip relative to the machining surface 5a, thereby ensuring the stability of the tool bit 3a relative to the machining surface 5a.

[0110] When the electric tool 1 does not use the support frame 2a, under the action of the user's continuous hand holding force, the end face of the first housing 10 acts as a support end face, and the first housing 10 will slide relative to the second housing 12 towards the direction of approaching the machining surface 5a until the end face of the first housing 10 abuts against the machining surface 5a. Subsequently, the driving mechanism 11 drives the tool bit 3a to rotate and feed, and the second housing 12, the driving mechanism 11 and the tool bit 3a as a whole slide synchronously relative to the first housing 10, completing the machining of the tap hole. Since the end face of the first housing 10 is usually of a ring shape, its support effect is superior to that of the thin tip end face of the tool bit 3a of the conventional electric tool 1, and thus the shaking of the electric tool 1 as a whole relative to the machining surface 5a can be effectively reduced, and the feeding of the tool bit 3a along the intended route is ensured.

[0111] In some embodiments, the first housing 10 is in the shape of a pistol, and the hand holding part is formed as a pistol grip. In other embodiments, the first housing 10 is in the shape of a long strip, and the hand holding part is formed on the first housing 10 (not shown in the drawings).

[0112] In some embodiments, the axial direction of the tool bit 3a is parallel or consistent with the axial direction of the motor 1103 and / or the axial direction of the speed reducer 1102.

[0113] In some embodiments, as shown in FIGS. 1-2 and 2-2, the second housing 12 is at least partially nested in the first housing 10 and is axially movable relative to the first housing 10; the driving mechanism 11 is at least partially accommodated in the second housing 12; and the second housing 12 is configured to be synchronously axially movable relative to the first housing 10 together with the tool bit and the driving mechanism 11 as a whole.

[0114] In the above embodiments, the drive mechanism 11 is at least partially housed in the second housing 12. For example, when the second housing 12 is completely retracted into the first housing 10, the motor 1103, the speed reducer 1102, and the cooling fan 1105 are housed in the second housing 12, and the output end of the drive mechanism 11, such as the chuck 1101 and the output end of the speed reducer 1102, is exposed from the second housing 12. Alternatively, when the second housing 12 is completely retracted into the first housing 10, the motor 1103 is partially exposed from the rear end of the second housing 12, and the rest of the motor 1103 is housed in the second housing 12. Alternatively, when the second housing 12 is completely retracted into the first housing 10, the cooling fan 1105 is partially exposed from the rear end of the second housing 12, and the rest of the cooling fan 1105 and the motor 1103 are housed in the second housing 12. In the present embodiment, the drive mechanism 11 includes at least the motor 1103, the speed reducer 1102, and the chuck 1101. The chuck 1101 is connected to the output end of the speed reducer 1102. When the second housing 12 is completely retracted into the first housing 10, the chuck 1101 and the output end of the speed reducer 1102 are disposed at the front end of the second housing 12. The rest of the motor 1103 and the speed reducer 1102 are housed in the second housing 12. Alternatively, in another embodiment, all the components of the drive mechanism 11 are housed in the second housing 12.

[0115] In addition, the second housing 12 is at least partially nested in the first housing 10. For example, when the second housing 12 is completely retracted into the first housing 10, the front and rear ends of the second housing 12 can be respectively exposed from the front and rear ends of the first housing 10 (not shown in the drawings). Alternatively, as shown in FIGS. 1-7, when the second housing 12 is completely retracted into the first housing 10, the front end of the second housing 12 is not exposed from the front end of the first housing 10, and the rear end of the second housing 12 can be exposed from the rear end of the first housing 10 (or not exposed from the rear end of the first housing 10, or when the second housing 12 is completely retracted into the first housing 10, or in other cases, which are not exemplified here).

[0116] In some embodiments, when the second housing 12 is completely extended relative to the first housing 10 to the maximum extent, the rear end of the second housing 12 can be disposed to be exposed from the rear end of the first housing 10 (as shown in FIG. 2-2) or the rear end of the second housing 12 can not be exposed from the rear end of the first housing 10 (as shown in FIG. 1-19). However, regardless of the extension or retraction of the second housing 12 relative to the first housing 10 to which extent, the second housing 12 is at least partially housed in the first housing 10 to ensure the supporting and housing effect of the first housing 10 on the second housing 12.

[0117] In addition, the exposure described in the present application can be complete exposure or partial exposure. Complete retraction does not mean that the second housing 12 is completely retracted into the first housing 10. Complete retraction means that the second housing 12 is moved forward relative to the first housing 10 to the maximum stroke.

[0118] The electric tool 1 has a front-rear direction, the front direction is consistent with the feeding direction of the tool bit 3a, the rear direction is consistent with the retreating direction of the tool bit 3a, the first shell 10 is provided with a first opening 1000 at the front end in the axial direction, and the second shell 12 is provided with a second opening 1200 at the front end in the axial direction corresponding to the first opening 1000. When the electric tool 1 is used for machining, the first opening 1000 and the second opening 1200 are arranged towards the machining surface 5a.

[0119] In some embodiments, the first opening 1000 is configured to be penetrated by the chuck 1101, and the second opening 1200 is configured to be penetrated by the output end of the driving mechanism 11 and connected with the chuck 1101.

[0120] The tool bit 3a of the embodiment can also be referred to as a tool.

[0121] In some embodiments, the axial direction of the output end of the driving mechanism 11 is parallel to the axial direction of the tool bit 3a.

[0122] In some embodiments, the second shell 12 includes a second shell body 12 and an auxiliary shell 22f, the second shell body 12 is formed by extending in the axial direction, the auxiliary shell is connected with the second shell body 12, the second opening 1200 penetrates the front end of the auxiliary shell and the second shell body 12, and the second opening 1200 communicates with the space defined in the second shell body 12. In some embodiments, the second shell body 12 and the auxiliary shell 22f are detachably connected or integrally connected.

[0123] In some embodiments, the axial direction of the first shell 10 and the second shell 12 is parallel to the axial direction of the tool bit 3a.

[0124] In some embodiments, the first shell 10 is provided with a third opening 1001 at one end away from the first opening 1000 in the axial direction, when the second shell 12 moves rearward relative to the first shell 10, one end of the second shell 12 away from the second opening 1200 can move to the outside of the third opening 1001; wherein the direction in which the second shell 12 moves rearward relative to the first shell 10 is consistent with the retreating direction of the tool bit 3a.

[0125] In the above embodiment, by providing the third opening 1001 in the first shell 10, a larger moving space is created for the second shell 12, so that it can move to the outside of the third opening 1001, thereby effectively increasing the moving stroke of the second shell 12.

[0126] The third opening 1001 penetrates the second reinforcing shell 10e and the rear end of the side shell of the first shell 10, and the third opening 1001 communicates with the space defined in the side shell of the first shell 10.

[0127] In some embodiments, the second shell 12 extends in the axial direction, and a fourth opening 1201 is formed in one end of the second shell 12 away from the second opening 1200 in the axial direction, and a display screen 1801 is connected at the fourth opening 1201, and the display screen 1801 moves synchronously with the second shell 12.

[0128] In some embodiments, the second shell 12 extends in the axial direction and has a fourth opening 1201, the control mainboard 111 is accommodated in the body of the second shell 12 and hidden in the fourth opening 1201 and arranged close to the fourth opening 1201, the display screen 1801 is connected at the fourth opening 1201, the display screen 1801 is arranged opposite to the control mainboard 111 and at the rear end of the control mainboard 111, and the display screen 1801 is electrically connected to the control mainboard 111. In addition, the mainboard generates heat during operation, and the control mainboard 111 is arranged close to the fourth opening 1201, and the second shell 12 can be moved out of the third opening 1001 to effectively dissipate heat. It should be noted that the display screen is connected at the fourth opening, which can be connected at the fourth opening, a little in front of the fourth opening, or a little behind the fourth opening.

[0129] In addition, the driving mechanism 11 is accommodated in the second shell 12, in order to avoid inconvenience of wiring when the second shell 12 moves relative to the first shell 10, the control mainboard 111 is accommodated in the second shell 12, which can better connect the wires of the motor 1103 and make the wiring neat.

[0130] In some embodiments, the driving mechanism 11 includes a motor 1103, the motor 1103 is accommodated in the second shell 12, and the control mainboard 111 is connected at the rear side of the motor 1103.

[0131] In some embodiments, the driving mechanism 11 is connected with the second shell 12, which can be interference fit fastening connection, or the driving mechanism 11 can be provided with a clamping structure, and the driving mechanism 11 and the second shell 12 can be fastened by the clamping structure. In this embodiment, the driving mechanism 11 and the second shell 12 are detachably fastened, and of course other fastening connections such as threaded or adhesive connection can also be used, which are not listed here.

[0132] In other embodiments, the control mainboard 111 and the display screen 1801 can also be connected to the first shell 10 (not shown in the drawings).

[0133] In some embodiments, the power tool 1 has a maximum stroke protection mode, which is a mode that the second housing 12 is unlocked relative to the first housing 10, and the drive mechanism 11 is interrupted to transmit rotation to the tool bit 3a when the second housing 12 is moved forward relative to the first housing 10 to a first designated position of the first housing 10 when the tool bit 3a is fed.

[0134] In some embodiments, the power tool 1 further comprises a first position sensor 112 for detecting whether the second housing 12 is moved to the first designated position relative to the first housing 10, and the first position sensor 112 detects a signal and controls the drive mechanism 11 to interrupt the transmission of rotation to the tool bit 3a when the second housing 12 is moved to the first designated position of the first housing 10 relative to the first housing 10.

[0135] In some embodiments, when the second housing 12 is moved forward relative to the first housing 10 to the first designated position of the first housing 10, the second housing 12 can just abut against the first housing 10 or there is a certain distance between the second housing 12 and the first housing 10, which is approximately ~xx mm.

[0136] In some embodiments, when the second housing 12 is moved to the first designated position of the first housing 10, the second housing 12 is configured to be in an un-abutted state with the first housing 10, so that the tool bit 3a cannot continue to be fed, preventing the first housing 10 and the second housing 12 from being directly contacted or collided, which not only can reduce the risk of component damage caused by impact, prolong the service life of the power tool 1, but also can improve the safety and reliability of operation, and reduce potential safety hazards. When the second housing 12 is moved forward relative to the first housing 10 from the first designated position to the second designated position of the first housing 10, the second housing 12 is configured to be in an abutted state with the first housing 10.

[0137] It should be noted that the abutted state means that the second housing 12 cannot move relative to the first housing 10.

[0138] The movement of the second housing 12 forward relative to the first housing 10 when the tool bit 3a is fed means that the output end of the power tool 1 is in a forward rotation mode, and the motor 1103 is controlled to stop rotating when the first housing 10 is located in the interval between the first designated position and the second designated position.

[0139] The movement of the second housing 12 backward relative to the first housing 10 when the tool bit 3a is retracted means that the output end of the power tool 1 is in a reverse rotation mode, and the motor 1103 will not stop rotating when the first housing 10 is located in the interval between the first designated position and the second designated position.

[0140] Optionally, when the second housing 12 moves relative to the first housing 10 from the first designated position to the second designated position, the control mainboard 111 controls the drive mechanism 11 to stop rotating according to the signal detected by the first position sensor 112. Of course, in other embodiments, the drive mechanism 11 can include a motor 1103 driver, and the third position sensor is connected to the motor 1103 driver, and the motor 1103 driver controls the motor 1103 to interrupt the rotation transmission to the tool bit 3a. As shown in FIGS. 2-3, at this time, the second movable part (40) (1401) is located at the fifth designated position and is in the unlocked state, in which the movement of the second housing relative to the first housing is unlocked, and the support frame can be detached from the power tool body la; a schematic view of the first position sensor moving with the second housing to the first designated position, at this time, the second position sensor is aligned with the first detection position 44, and the control mainboard controls the motor to stop rotating. In other embodiments, the first position sensor 112 can be a mechanical limit switch sensor, which is directly connected to the motor 1103. FIG. 2-1 is a sixth designated position of the second movable part (40) (1401) and is in a locked state, at this time, the movement of the second housing relative to the first housing is locked, and the support frame is locked on the power tool body la, at this time, the second position sensor is offset from the first detection position. As shown in FIG. 2-2, the second movable part (40) (1401) is in the locked state, and the drawing shows that the user moves the second housing relative to the first housing backward when the first movable part is in the unlocked state, and then the user bends the second movable part (40) (1401) to the locked state, at this time, if the second housing moves forward relative to the first housing, the first protrusion will be stopped by the first locking protrusion, causing the second housing to be unable to be retracted to the maximum extent in the first housing, so the user must rotate the second movable part (40) (1401) to the unlocked state, and the second housing can be retracted to the maximum extent in the first housing.

[0141] In some embodiments, as shown in FIGS. 1-3 and 2-6, a structural schematic diagram of the first position sensor 112 of one embodiment of the power tool 1 is shown. The first position sensor 112 can be a Hall sensor, or an optical sensor, or an infrared sensor, or a potential sensor, or other sensors.

[0142] In some embodiments, the control mainboard 111 is connected in the second housing 12. In order to avoid relative movement of the wire during movement of the second housing 12, the first position sensor 112 is also connected to the second housing 12.

[0143] It should be noted that the signal detected by the first position sensor 112 refers to the signal indicating that the second housing 12 has moved to the first specified position relative to the first housing 10. In the embodiment, the first position sensor 112 can be the same as the depth sensor 1602. Assuming that the first position sensor 112 is an absolute position sensor, the first position sensor 112 can always detect the position signal. In this case, the signal described in the above embodiment refers to the signal indicating that the second housing 12 has moved to the first specified position relative to the first housing 10.

[0144] In some embodiments, as shown in FIGS. 1-17 and 1-18, the first housing 10 has a first face 1002, the second housing 12 has a second face 1206, and the first elastic member 110 is arranged between the first face 1002 and the second face 1206. When the second housing 12 moves to the first specified position of the first housing 10, the first elastic member 110 is compressed, and at this time, the distance between the second face 1206 and the first face 1002 is a, where a > 0. The length of the first elastic member 110 in the natural state is d, where d > a. When the second housing 12 moves to the first specified position of the first housing 10, the second housing 12 is configured to be in the non-abutting state with the first housing 10. When the second housing 12 moves from the first specified position to the second specified position of the first housing 10, the second housing 12 is configured to be in the abutting state with the first housing 10, and the distance between the second face 1206 and the first face 1002 is b, where a > b and b > 0. The length of the first elastic member 110 when compressed to the limit is c, where c < b.

[0145] In some embodiments, when the second housing 12 is in the interval between the first specified position and the second specified position, the control mainboard 111 controls the output end of the driving mechanism 11 to stop rotating according to the signal detected by the first position sensor 112. By arranging the first elastic member 110, when the power tool 1 stops working and is put back into the storage box by the user, the second housing 12 is pushed away by the elastic force of the first elastic member 110 at this time, so that the second housing 12 is not located in the interval between the first specified position and the second specified position of the first housing 10. When the user picks up the power tool 1 again to prepare for work, the second housing 12 will not be in the first specified position and the second specified position of the first housing 10 (including the first specified position and the second specified position). Therefore, the user can pull the trigger 121 to drive the driving mechanism 11 to rotate and drive the tool bit 3a to feed forward.

[0146] In some embodiments, the first elastic member 110 can be a spring or a compression spring or a soft rubber that can be compressed and deformed and reset.

[0147] In some embodiments, when the second housing 12 moves to the first designated position of the first housing 10, the second housing 12 is configured to be in an un-abutted state with the first housing 10; when the second housing 12 moves forward from the first designated position to the second designated position of the first housing 10, the second housing 12 is configured to be in an abutted state with the first housing 10, and the distance between the second surface 1206 and the first surface 1002 is b, where a > b, b > c, and the length of the first elastic member 110 when compressed to the limit is c, c < b.

[0148] In the above embodiments, by setting c < b, it can be ensured that the first elastic member 110 will not be compressed to the limit by the second housing 12 all the time, causing failure.

[0149] In some embodiments, the power tool 1 further comprises a first elastic member 110, and the two ends of the first elastic member 110 are connected to the first housing 10 and the second housing 12 respectively; when the second housing 12 moves forward to the first designated position of the first housing 10, the first elastic member 110 is configured to be in a stretched state (not shown in the drawings).

[0150] In some embodiments, when the second housing 12 moves to the first designated position of the first housing 10, the second housing 12 is configured to be in an un-abutted state with the first housing 10; when the second housing 12 moves forward from the first designated position to the second designated position of the first housing 10, the second housing 12 is configured to be in an abutted state with the first housing 10 and the first elastic member 110 is configured to be in an un-stretched limit position (not shown in the drawings).

[0151] In some embodiments, the first housing 10 is provided with a first guide structure 15, and the second housing 12 is provided with a second guide structure 15 matched with the first guide structure 15, and the second housing 12 can move along the axial direction relative to the first housing 10 through the cooperation of the first guide structure 15 and the second guide structure 15.

[0152] In the above embodiments, by setting the guide structure 15, the second housing 12 can be stably moved along the axial direction.

[0153] In some embodiments, as shown in FIGS. 1-3 to 2-5, the second guide structure 15 is a protruding portion 1202 protruding from the second housing 12, and the protruding portion 1202 is provided with a guide hole 1501; the first guide structure 15 is a guide shaft 1502, and the two ends of the guide shaft 1502 are connected to the first housing 10 and the guide shaft 1502 penetrates the guide hole 1501 so that the second housing 12 is slidingly connected to the guide shaft. The movement of the second housing 12 is guided.

[0154] In some embodiments, the guide structure 15 is not limited to the above-mentioned embodiments, for example, the guide structure 15 can also include a slide rail arranged on the first shell 10 and a guide protrusion arranged on the second shell 12, or the guide structure 15 can also include a slide rail arranged on the second shell 12 and a guide protrusion arranged on the first shell 10 (not shown in the drawings). Of course, there are many other guide structures 15, which are not listed here.

[0155] In some embodiments, the first elastic member 110 is sleeved on the guide shaft 1502, and the first elastic member 110 is arranged on the front side of the protruding portion 1202, and when the second shell 12 moves to the first specified position relative to the first shell 10, the first elastic member 110 is configured in a compressed state; or the first elastic member 110 is arranged on the rear side of the protruding portion 1202, and when the second shell 12 moves to the first specified position relative to the first shell 10, the first elastic member 110 is configured in a stretched state (not shown in the drawings).

[0156] In some embodiments, as shown in FIGS. 2-5, in order to improve the strength of the protruding portion 1202, the second shell 12 includes a second shell 12 body, a protruding portion 1202, and a reinforcing portion 1217, the protruding portion 1202 is connected to the second shell 12 body, and the reinforcing portion 1217 is connected to the second shell 12 body and the protruding portion 1202 at both ends.

[0157] The first shell includes a first shell body and a reinforcing shell arranged on the front and rear sides of the first shell body, and the guide shaft is connected to the reinforcing shell at both ends, wherein the first shell body is composed of two halves of the shell connected by threads, and the reinforcing shell is connected to the first shell body by threads. The second shell includes a connecting shell and a second shell body arranged separately from the connecting shell, wherein the second shell body is composed of two halves of the shell connected by threads, and the connecting shell and the second shell body are fixedly connected to the reducer. The electric tool further includes a linear bearing fixedly connected in the guide hole, and the guide shaft passes through the linear bearing. Of course, in other embodiments, the first shell body and the reinforcing shell can be integrally connected, and the first shell as a whole is composed of two halves of the shell; the second shell body and the reinforcing shell can be integrally connected, and the second shell as a whole is composed of two halves of the shell.

[0158] In some embodiments, the protruding portion includes a first protruding portion and a second protruding portion, and the first shell is expanded on both sides to accommodate the first protruding portion and the second protruding portion, respectively. In some embodiments, the first protruding portion and the second protruding portion can have the same or different heights.

[0159] In some embodiments, in order to make the overall shape of the second shell 12 compact and the airflow easy to enter the second shell 12, the reinforcing portion 1217 is arranged obliquely to the axial direction.

[0160] In some embodiments, the second air inlet 1211 is formed on the reinforcing portion 1217 and penetrates the second housing 12 body, and the driving mechanism 11 is arranged in the second housing 12 body; the second housing 12 body is further provided with a second air outlet 1212, and the first housing 10 is provided with a plurality of ventilation holes. In some embodiments, the second housing is further provided with a flow separation plate 147; the flow separation plate divides the space between the cooling fan and the cooling fin into a first airflow cavity and a second airflow cavity, and the second housing is further provided with a third air inlet, and the ventilation holes include a first ventilation hole 144 and a second ventilation hole 145.

[0161] When the second housing is retracted into the first housing (as shown in FIGS. 2-1 to 2-12), the airflow sequentially passes through the first ventilation hole, the second air inlet, the second air outlet, and the second ventilation hole, so as to carry away the heat generated by the stator and other parts of the motor; secondly, since the third air inlet is not exposed outside the first housing when the second housing is retracted into the first housing, the airflow may sequentially pass through the first ventilation hole, the third air inlet, the first airflow cavity, the second airflow cavity, the second air outlet, and the second ventilation hole, so as to carry away the heat of the control mainboard.

[0162] When the second housing is extended to the maximum stroke relative to the first housing, since the first ventilation hole is blocked by the outer wall of the second housing, and at this time the second air outlet is exposed outside, the airflow sequentially passes through the second ventilation hole, the second air inlet, and the second air outlet, so as to carry away the heat generated by the stator and other parts of the motor; secondly, since the third air inlet is exposed outside the first housing, the airflow sequentially passes through the third air inlet, the first airflow cavity, the second airflow cavity, and the second air outlet, so as to carry away the heat of the control mainboard. In some embodiments, the motor, the cooling fan, the cooling fin, and the control mainboard are arranged in sequence in the axial direction, and by arranging the flow separation plate, the heat of the control mainboard can be carried away to the maximum extent. The second air outlet and the third air inlet are respectively arranged on the two sides of the flow separation plate; the first airflow cavity is arranged at the rear side of the second airflow cavity; in some embodiments, a baffle plate can be arranged between the first ventilation hole and the second ventilation hole, so that the airflow circulating in the third space defined between the second housing and the first housing can be prevented, for example, the airflow entering from the first ventilation hole directly exits from the second ventilation hole without entering the second housing through the second air inlet, so that the heat dissipation of the driving mechanism and the control mainboard cannot be achieved.

[0163] In some embodiments, in order to prevent the airflow from circulating in the space defined between the first housing 10 and the second housing 12, which is not conducive to heat dissipation, a baffle plate (not shown in the drawings) is arranged between the second air inlet 1211 and the second air outlet 1212.

[0164] In some embodiments, in order to facilitate heat dissipation of the motor 1103, the driving mechanism 11 comprises the motor 1103, and a stator of the motor 1103 is arranged at a rear side of the second air inlet 1211 in an axial direction.

[0165] In some embodiments, as shown in FIGS. 1-1 to 2-12, the power tool 1 further comprises a second elastic member 119a, which is configured to generate a restoring force on the second housing 12 when the second housing 12 moves backward relative to the first housing 10.

[0166] In some embodiments, the reinforcing portion 1217 is defined with a first accommodating cavity, and the second elastic member 119a is arranged in the first accommodating cavity. One end of the second elastic member 119a is connected with the second housing 12, and the other end is connected with the first housing 10. When the second housing 12 moves backward relative to the first housing 10, the second elastic member 119a can be stretched, so that the second elastic member 119a generates a restoring force on the second housing 12. At this time, the second elastic member 119a is a tension spring or a tension rope.

[0167] In the above embodiments, the second elastic member 119a is compressed only when the second housing 12 moves to a certain position relative to the first housing 10. In other embodiments, the second elastic member 119a is compressed as long as the second housing 12 moves relative to the first housing 10.

[0168] In the above embodiments, the first elastic member 110 and the second elastic member 119a can be a tension rope, a tension spring, a spring piece, a compression spring, etc.

[0169] In the above embodiments, by arranging the second elastic member 119a, when the user picks up the power tool 1 and supports the support frame 2a against the machining surface 5a before the power tool 1 operates, the first housing 10 and the support frame 2a as a whole move toward the machining surface 5a relative to the second housing 12. At this time, the second housing 12 actually moves backward relative to the first housing 10, and the second elastic member 119a generates a restoring tendency on the second housing 12 and applies a restoring elastic force to the second housing 12. Under the action of the elastic force of the second elastic member 119a, the tool bit 3a can be more stably supported against the machining surface 5a.

[0170] Secondly, when the power tool 1 performs tapping operation, an initial feeding force usually needs to be provided for the tool bit 3a. In the traditional way, the user manually applies a force to the second housing 12 to provide the feeding force. However, manual force application is often unstable, which can easily damage the tapped thread during tapping.

[0171] In the electric tool 1, the second elastic member 119a plays an important role. The second elastic member 119a can apply a force to the second housing 12, which can replace the manual force to provide a stable initial feeding force for the tool bit 3a. Due to the elastic force characteristics of the second elastic member 119a, the force applied is stable and uniform, which can effectively avoid the impact of unstable manual force on the tapping quality, and ensure that the tapped thread quality is reliable and more accurate. When encountering a difficult hole, the initial feeding force can be provided by the auxiliary handle 4a.

[0172] Secondly, by setting the second elastic member 119a, when the electric tool 1 is not in use, the second housing 12 is not easy to move backward relative to the first housing 10 under the action of the second elastic member 119a, which can make the second housing 12 shrink into the first housing 10 in the state of not being used, and the second housing 12 is not easy to move backward relative to the first housing 10 when the user picks up the electric tool 1.

[0173] In some embodiments, as shown in FIGS. 1-7 and 2-1 to 2-12, the electric tool body 1a includes a depth sensing assembly 16, which includes a depth sensor 1602 arranged on the second housing 12, and the depth sensor 1602 is used to detect the real-time position of the second housing 12 relative to the first housing 10.

[0174] In the above embodiments, since the tool bit 3a moves with the second housing 12 relative to the first housing 10, the depth sensor 1602 can detect the machining depth of the tool bit 3a.

[0175] In some embodiments, as shown in FIGS. 1-7 and 2-1 to 2-12, the depth sensor 1602 can be used as the first position sensor 112. When the depth sensor 1602 is an absolute position sensor, it can detect whether the second housing 12 moves to the first specified position relative to the first housing 10. In some embodiments, the depth sensor 1602 can also be a potential sensor.

[0176] In some embodiments, the second shell 12 is connected with a first circuit board, and the depth sensing assembly 16 further comprises a first gear 1601 rotatably connected with the second shell 12, a rack 1603 meshingly connected with the first gear 1601, and a magnet connected with the first gear 1601; the rack 1603 is connected with the inner side wall of the first shell 10; the depth sensor 1602 is integrated on the first circuit board, and the magnet is oppositely arranged with the depth sensor 1602; when the second shell 12 moves relative to the first shell 10, the rack 1603 drives the first gear 1601 to rotate and in turn drives the magnet to rotate, and the depth sensor 1602 detects the signal change caused by the rotation of the magnet and in turn detects the real-time position of the second shell 12 relative to the first shell 10. The first circuit board is fixedly connected with the second shell.

[0177] In some embodiments, the depth sensor 1602 is oppositely arranged with the first gear 1601. In some embodiments, the rack is fixedly connected with the depth sensor, and the rack can be connected by means of adhesive or threads. The magnet is fixedly connected with the first gear.

[0178] In some embodiments, as shown in FIGS. 2-6, the first circuit board is connected with the inner wall of the front bottom wall 273 of the second shell, and the front bottom wall 273 of the second shell is spaced apart from the forward and reverse operation knob 122 so as not to limit the movement of the second shell relative to the first shell. The second shell further comprises a rear bottom wall of the second shell.

[0179] In some embodiments, the depth sensor 1602 is an absolute position sensor or a relative position sensor, such as an absolute magnetic encoder sensor or a relative magnetic encoder sensor.

[0180] In some embodiments, a plurality of connecting cavities are defined on the second shell 12, the first circuit board is arranged on one of the connecting cavities, and a bearing is interference-fitted in the other connecting cavities, the first gear 1601 is rotatably connected with the second shell 12 through the bearing, and the cavity wall of the connecting cavity is provided with an opening so that the first gear 1601 is exposed to the opening and meshed with the rack 1603 so that the rack 1603 can drive the first gear 1601 to rotate.

[0181] In some embodiments, the front side of the first circuit board is further integrated with a first position sensor 112, which is used to detect whether the second shell 12 moves to a first specified position when the second shell 12 moves forward relative to the first shell 10; when the second shell 12 moves forward relative to the first shell 10 to the first specified position of the first shell 10, the first position sensor 112 detects a signal and controls the driving mechanism 11 to interrupt the rotation transmission to the tool bit 3a.

[0182] In some embodiments, the electric tool 1 further comprises a control mainboard 111 connected to the rear side of the second shell 12, the driving mechanism 11 comprises a motor 1103 electrically connected to the control mainboard 111, and the control mainboard 111 is located at the rear side of the motor 1103; the first circuit board is electrically connected to the control mainboard 111, and the depth sensor 1602 and the first position sensor 112 are electrically connected to the control mainboard 111 through the first circuit board. The control mainboard is fixedly connected to the second shell.

[0183] In some embodiments, the second shell 12 extends in the axial direction, the control mainboard 111 is connected to the rear side of the second shell 12, the first shell 10 comprises a first shell 10 side shell and a handheld shell 10b; the first shell 10 side shell extends in the axial direction, and the handheld shell 10b is arranged at an angle with the first shell 10 side shell; the overall shape of the first shell 10 is in the shape of a pistol.

[0184] When the depth sensor 1602 is a relative position sensor, the first position sensor 112 can be a Hall sensor or a light sensor or an infrared sensor. Through the cooperation of the depth sensor 1602 and the first position sensor 112, the absolute position of the second shell 12 relative to the first shell 10 can be detected.

[0185] In some embodiments, the depth sensor 1602 can be mounted on the first shell 10, the rack 1603 is connected to the second shell 12, the first gear 1601 and the first position sensor 112 are connected to the first shell 10, and the control mainboard 111 is also connected to the first shell 10.

[0186] In some embodiments, the handheld shell 10b is connected with a base 10c, and the base 10c can be used to place the battery 120 and / or the tool bit 3a, or the base 10c has an installation groove formed on the outer wall thereof for mounting the tool bit 3a.

[0187] In some embodiments, the lower side of the second shell 12 extends to form a first wiring channel 1207, the first wiring channel 1207 has a first opening 12071, and the wires of the first circuit board pass through the first wiring channel 1207 to be connected to the control mainboard 111; the electric tool 1 further comprises a battery 120 seat connected to the bottom of the first shell 10, and the wires connected to the battery 120 enter the first wiring channel 1207 from the first opening 12071 to be connected to the control mainboard 111.

[0188] In some embodiments, the first shell 10 extends in the axial direction to form a first shell 10 side shell, the first shell 10 side shell is provided with a fifth opening 1005 extending in the axial direction, the second shell 12 is connected with an auxiliary protrusion 224, the auxiliary protrusion 224 at least partially exposes the fifth opening 1005, and the auxiliary protrusion 224 is used to connect the auxiliary handle 4a.

[0189] In some embodiments, the first housing 10 extends in the axial direction to form a first housing 10 side shell, the first housing 10 side shell is provided with a fifth opening 1005, the fifth opening 1005 extends in the axial direction, the second housing 12 is provided with a sixth opening 1203, the sixth opening 1203 is connected with a gear shifting mechanism 100g, the gear shifting mechanism 100g includes a dialing structure 12g, the dialing structure 12g is at least partially exposed from the fifth opening 1005 and the sixth opening 1203, and the dialing structure 12g is used to adjust the gear switching of the electric tool 1, wherein the electric tool 1 has three gear modes (corresponding to the electric drill, electric wrench, and tapping mode respectively) (described below, as shown in FIGS. 4-1 to 4-14).

[0190] In some embodiments, the electric tool 1 further includes a locking structure 14, which is used to lock or unlock the movement of the second housing 12 relative to the first housing 10. (As shown in FIGS. 1-1 to 1-28 and as shown in FIGS. 3-1 to 3-8)

[0191] In some embodiments, the electric tool body 1a further includes a display assembly 18, which includes a display screen 1801 connected with the second housing 12 and arranged at the rear side of the control mainboard 111, the display screen 1801 is used to display the real-time relative distance of the movement of the second housing 12 relative to the first housing 10; the control mainboard 111 is electrically connected with the display screen 1801; the display screen 1801 is installed at one end of the second housing 12 which is provided with a fourth opening 1201; the display assembly 18 further includes a reset button 1802 or a reset touch point 18011 arranged on the display screen 1801, the reset button 1802 is electrically connected with the control mainboard 111, when the user presses the reset button 1802 or clicks the reset touch point, the control mainboard 111 receives the reset signal and controls the real-time relative distance value displayed on the display screen 1801 to be 0. In some embodiments, the display assembly further includes a reset sensor, which is used to detect the reset signal, when the user presses the reset button or clicks the reset touch point, the reset sensor detects the reset signal and transmits the reset signal to the control mainboard, and the control mainboard controls the real-time relative distance value displayed on the display screen to be 0 according to the reset signal. In some embodiments, the reset sensor and the torque adjustment sensor / depth adjustment sensor are arranged at the same position, and the torque adjustment sensor and the depth adjustment sensor can be the same sensor (referred to as a parameter adjustment sensor, which can be used to adjust the size of the motor output end and the target distance of the movement of the second housing relative to the first housing), and the reset sensor can be a pressure sensor or an inductive / capacitive reset sensor or an optical reset sensor, etc. In some embodiments, a sixth elastic member is further included to facilitate the reset of the reset button.

[0192] In some embodiments, the fixing ring 142 is fixedly connected (threaded connection or adhesive connection or other connection) to the tail part 141 of the second shell, the display screen 1801 is mounted on the tail part 141 of the second shell by being clamped on the fixing ring 142, and the tail part 141 of the second shell is provided with a fourth opening 1201; the trigger part 19012 of the parameter adjustment knob 136 is engaged with the second gear 1903, and the parameter adjustment knob 136 is rotated to rotate the trigger part 19012 and the second gear 1903, so that the parameter adjustment sensor 137 detects a signal. In some embodiments, the zero reset button is resettable by the sixth elastic member. In some embodiments, the parameter adjustment sensor 137 is integrated on the control mainboard. The zero reset sensor is also integrated on the control mainboard, and when the zero reset button 1802 is pressed, the pressing part of the zero reset button 1802 can press the zero reset sensor to make the zero reset sensor detect a signal.

[0193] In some embodiments, when the user presses the zero reset button 1802 or clicks the zero reset touch point 18011, the control mainboard 111 receives a zero reset signal and sets the current position of the second shell 12 relative to the first shell 10 detected by the depth sensor 1602 as the 0 point position of the real-time relative distance, and when the depth sensor 1602 detects the real-time position of the second shell 12 relative to the first shell 10 when the second shell 12 moves relative to the first shell 10, the control mainboard 111 calculates the real-time relative distance of the second shell 12 relative to the first shell 10 according to the real-time position and the 0 point position and controls the display screen 1801 to display the real-time relative distance. For example, assuming that the user holds the power tool 1 against the machining surface 5a, that is, after the first shell 10 and the support frame 2a move relative to the second shell 12 until the support frame 2a abuts against the machining surface 5a and the user presses the zero reset button 1802, that is, the current position of the second shell 12 relative to the first shell 10 detected by the depth sensor 1602 is set as the 0 point position of the real-time relative distance of the second shell 12 relative to the first shell 10, and at this time, the display screen 1801 displays the real-time relative distance value of 0, when the power tool 1 starts to work, for example, the cutter head 3a feeds, that is, the second shell 12 moves forward relative to the first shell 10, the depth sensor 1602 detects the change of the real-time position of the second shell 12 relative to the first shell 10, for example, the second shell 12 moves 5 cm relative to the first shell 10, then the display screen 1801 displays the real-time relative distance position of 5 cm or 50 mm or 0.05 m, and the specific real-time relative distance value displayed is displayed according to the unit. It should be noted that the 0 point position is the position where the relative distance of the second shell 12 relative to the first shell 10 is 0.

[0194] In the above embodiment, the second gear can be connected with an elastic telescopic rod, when the second gear rotates, the elastic telescopic rod rotates, and then the parameter adjustment sensor detects a signal. The parameter adjustment sensor is a potentiometer sensor, and at the same time, when the user presses the elastic telescopic rod through the 0 button, a 0 reset signal can be triggered. At this time, the 0 reset sensor is a limit switch provided by the elastic telescopic rod, that is, the elastic telescopic rod is connected with the on-off connection of the control mainboard to trigger the 0 reset signal.

[0195] In actual operation, after the support frame 2a abuts against the machining surface 5a each time, the user needs to press the 0 reset button 1802, that is, the current position of the second housing 12 relative to the first housing 10 is set as the 0 point position of the real-time relative distance. Then next time, assuming that the tool bit 3a and the support frame 2a are not replaced and the machining surface 5a is not a hole, after the support frame 2a abuts against the machining surface 5a, the current position of the second housing 12 relative to the first housing 10 is the 0 point position, and the value displayed on the display screen 1801 is 0, that is, the relative distance of the second housing 12 relative to the first housing 10 is 0.

[0196] Since the length of the tool bit 3a changes after replacement when the electric tool 1 drills holes of different sizes or taps holes of different sizes, when the tool bit 3a abuts against the machining surface 5a, the relative distance of the first housing 10 and the support frame 2a relative to the second housing 12 moving towards the machining surface 5a is also different from the previous one. Then the current position of the second housing 12 relative to the first housing 10 read by the depth sensor 1602 is different from the previous one. Therefore, the 0 reset button 1802 needs to be pressed again after replacing a tool bit 3a of different length.

[0197] Of course, if the tool bit 3a is not replaced and the length of the support frame 2a changes, the 0 reset button 1802 also needs to be pressed before tapping a hole each time.

[0198] By setting the 0 reset button 1802, the current position of the second housing 12 relative to the first housing 10 can be defined as the 0 point position each time. When the tool bit 3a is operated, the distance moved by the tool bit 3a minus 0 is the value displayed on the display screen 1801. If the 0 reset function is not set, the value displayed on the display screen 1801 after operation minus the value before operation is the operation depth of the tool bit 3a, and the value before operation is the value after the previous operation. This calculation is very inconvenient. By setting the 0 reset function, the value displayed on the display screen 1801 is the operation depth of the tool bit 3a.

[0199] In addition, as shown in FIG. 1-14, when there is a hole on the machining surface 5a, and assuming that the length of the tool head 3a and the length of the support frame 2a remain unchanged, and a hole needs to be drilled in the hole, then before the operation, the tool head 3a is pressed against the machining surface 5a, and the first shell 10 and the support frame 2a will move towards the machining surface 5a relative to the second shell 12, at this time, the value of the display screen 1801 will be reset to 0 by pressing the reset button 1802 before the operation.

[0200] It should be noted that the depth sensor 1602 can be an absolute position sensor or a relative position sensor, which is used to set the current position as the 0 point position of the relative distance of the second shell 12 relative to the first shell 10, which generally means that the control mainboard 111 sets the current position as the 0 point position of the real-time relative distance, and uses the 0 point position as the initial reference point to calculate the real-time relative distance of the second shell 12 relative to the first shell 10. When the depth sensor 1602 sends a real-time position signal to the control mainboard 111, the control mainboard 111 calculates the real-time relative distance according to the 0 point position and the real-time position signal, and controls the display screen 1801 to display the corresponding real-time relative distance value.

[0201] In the above embodiment, the depth sensor can be an absolute position sensor, such as an absolute magnetic encoding sensor. The real-time position of the second shell relative to the first shell detected by the depth sensor is an absolute position. For example, when the reset button is pressed, the depth sensor detects that the absolute position a1 of the second shell relative to the first shell is set as the 0 point position. When the second shell moves forward relative to the first shell to the absolute position a2 (which is the absolute position a2 of the second shell relative to the first shell detected by the depth sensor), the real-time relative distance displayed by the display screen at this time is the value of a1 minus a2, which is positive. In another embodiment, when the reset button is pressed, the depth sensor detects that the absolute position a1 of the second shell relative to the first shell is set as the 0 point position. When the second shell moves backward relative to the first shell to the absolute position a3, the real-time relative distance displayed by the display screen at this time is the value of a1 minus a3, which is negative.

[0202] In the above embodiment, the depth sensor can be a relative position sensor, such as a relative magnetic encoder sensor, and the real-time position of the second housing relative to the first housing detected by the depth sensor is a relative position. For example, when the reset button is pressed, the depth sensor detects that the relative position a1 of the second housing relative to the first housing is set as the 0 point position. When the second housing moves forward relative to the first housing to a relative position a2 (which is the relative position a2 of the second housing relative to the first housing detected by the depth sensor), the real-time relative distance displayed on the display screen at this time is the value of a1 minus a2, which is positive. In another embodiment, when the reset button is pressed, the depth sensor detects that the relative position a1 of the second housing relative to the first housing is set as the 0 point position. When the second housing moves backward relative to the first housing to a relative position a3, the real-time relative distance displayed on the display screen at this time is the value of a1 minus a3, which is negative.

[0203] The power tool body 1a further comprises a torque adjustment assembly, which comprises a torque adjustment knob 126 and a torque adjustment sensor 127 arranged at the rear side of the second housing 12. The torque adjustment knob 126 is used to adjust the output torque of the output end of the driving mechanism 11. The torque adjustment sensor 127 is electrically connected to the control mainboard 111. When the torque adjustment knob 126 is rotated, the torque adjustment sensor 127 detects a corresponding signal. The control mainboard 111 receives the signal sent by the torque adjustment sensor 127 to adjust the output torque of the motor output end and further adjust the output torque of the output end of the driving mechanism 11. In the above embodiment, the torque adjustment knob 126 and the depth adjustment knob can be the same component, and the torque adjustment sensor 127 and the depth adjustment sensor 1902 can be the same component. That is, the parameter adjustment knob arranged at the rear side of the second housing 12 can be used to adjust only the output torque of the motor output end or only the target distance of the movement of the second housing 12 relative to the first housing 10. In other embodiments, the parameter adjustment knob can also be used to adjust other parameters of the power tool 1, such as the rotation speed of the motor output end and other parameters.

[0204] In the above embodiment, the torque adjustment knob 126 can adjust the output end 20 different torques of the driving mechanism 11. For example, when the electric tool 1 is in the first gear mode (such as the electric drill mode), at this time, the torque adjustment knob 126 is rotated, the output end torque of the electric drill mode transmitted to the driving mechanism 11 can be adjusted; when the electric tool 1 is in the second gear mode (such as the electric screwdriver mode), at this time, the torque adjustment knob 126 is rotated, the output end torque of the electric screwdriver mode transmitted to the driving mechanism 11 can be adjusted; the third gear mode (the same as the tapping mode). The torque adjustment knob 126 adjusts the output end torque of the driving mechanism 11 by adjusting the output end torque of the motor 1103. For example, the torque adjustment knob 126 is rotated, the second gear 1903 is rotated, the torque adjustment sensor 127 detects the corresponding signal, and the control board 111 adjusts the output end torque of the motor 1103 according to the signal. It should be noted that when the output end torque of the motor 1103 is adjusted to the seventh gear by rotating the torque adjustment knob 126, at this time it is the electric drill mode, if the mode of the motor 1103 is adjusted from the electric drill mode to the electric screwdriver mode by the dialing structure 12g at this time, the output end torque of the motor 1103 in the electric screwdriver mode is still the seventh gear. It should be explained that the gear adjustment mechanism 100g adjusts the mode of the motor 1103 (corresponding to the electric drill mode, the electric screwdriver mode, and the tapping mode, which can also be called the first gear, the second gear, or the third gear), and the torque adjustment adjusts the output end torque of the motor 1103. For example, the output torque of the motor 1103 is adjusted in the electric drill mode, at this time, the electric drill mode is still maintained, but the output torque of the motor 1103 is changed. The torque adjustment knob 126 can adjust 20 different torques. They are the first gear torque, the second gear torque, the third gear torque, the fourth gear torque, and so on. As shown in FIGS. 2-7, the tapping icon 138 is displayed on the display screen 1801, and the torque value 139 displayed is 10, which represents that the electric tool 1 is in the tapping mode at this time, and the output end torque of the motor 1103 is the tenth gear torque. When the parameter adjustment knob 136 is only used to adjust the target distance of the second shell 12 relative to the first shell 10, the 10 represents that the target distance of the second shell 12 relative to the first shell 10 is 10, and the motor 1103 stops rotating. The -88.8mm displayed on the display screen 1801 represents that the real-time relative distance of the second shell 12 relative to the first shell 10 at this time is -88.8mm, and when the value becomes 10mm, the motor 1103 stops rotating. It should be noted that the minus sign before the value -88.8 represents the relative distance of the second shell 12 moving backward relative to the first shell 10, and the plus sign represents the relative distance of the second shell 12 moving forward relative to the first shell 10 at this time.

[0205] In some embodiments, the parameter adjustment knob 136 can be used to adjust the target distance of the second housing 12 relative to the first housing 10 while adjusting the torque, and when the user wants to adjust the output torque of the driving mechanism 11, the torque adjustment function can be turned on by pressing a certain button or pressing a certain icon on the display screen 1801 or pressing the zero reset button 1802 twice or other ways, and the target distance adjustment function is temporarily turned off. After the output torque of the driving mechanism 11 is adjusted, the torque adjustment function can be turned off by pressing a certain button or pressing a certain icon on the display screen 1801 or pressing the zero reset button 1802 three times or other ways, and the target distance adjustment function is turned on, and the user can adjust the target distance of the second housing 12 relative to the first housing 10.

[0206] In some embodiments, the electric tool body 1a is provided with a closed-loop control module, which is electrically connected with the control mainboard 111, and is used to detect the output speed of the driving mechanism 11. In the above embodiment, by providing the closed-loop control module, when the driving mechanism 11 encounters a difficult hole during tapping, the output speed of the driving mechanism 11 will decrease, at this time, the closed-loop control module detects that the output speed of the driving mechanism 11 decreases, and the control mainboard 111 controls the motor 1103 in the driving mechanism 11 to increase the current, so that the output torque of the driving mechanism 11 increases, and the cutting head 3a can overcome the friction of the hole to increase the speed. (The figure is not shown)

[0207] Please refer to the ninth embodiment of the support frame, as shown in FIGS. 2-1 to 2-12.

[0208] In some embodiments, the electric tool further comprises an electric tool body 1a and a support frame 2a, which is detachably connected to the electric tool body 1a, and the support frame 2a forms a through channel 22. In the above embodiment, when the support frame 2a is connected to the electric tool body 1a, it is synchronized with the movement of the first housing, so it can also be understood that the support frame is connected with the first housing. In some embodiments, the second movable part (40) (1401) is connected with the first housing, and the support frame 2a is indirectly connected to the first housing 10 through the second movable part (40) (1401).

[0209] In the above embodiment, the through channel is provided to facilitate the movement of the cutting head 3a in the through channel 22.

[0210] In some embodiments, the support frame 2a comprises a connecting portion 20a (also referred to as a splicing portion 20) and a support portion 21. The connecting portion 20a comprises a first connecting structure 202, and the support frame 2a is connected to the power tool body 1a through the first connecting structure 202. The support portion 21 is connected to the connecting portion 20a. The support portion 21 is configured to abut against the working surface 5a when the power tool abuts against the working surface. In some embodiments, the first connecting structure 202 can be a clamping hook 202a, a magnet, or a second locking protrusion. In the above embodiments, the support frame 2a can be indirectly fixed to the power tool body 1a through the locking connection between the second locking protrusion and the second movable piece (40) (1401).

[0211] In the above embodiments, the side of the support portion 21 away from the first housing serves as a support end, which abuts against the working surface 5a.

[0212] In some embodiments, the connecting portion 20a and the support portion 21 are integrally connected. The support portion 21 is a support leg 21a, and the support leg 21a is provided with at least one.

[0213] It should be noted that when the support portion 21 is a support leg 21a, several support points of the support leg 21a form a support surface 211, which is not a solid surface but a virtual support plane determined by the several points.

[0214] In some embodiments, the side of the support portion 21 away from the first housing is connected with a first support structure 29.

[0215] In some embodiments, the first support structure 29 is a support surface 211 structure, and the through channel 22 penetrates the support surface 211 structure.

[0216] In some embodiments, the side of the support surface 211 structure away from the first housing is connected with an anti-skid pad (not shown in the drawings).

[0217] In some embodiments, the support portion 21 is further provided with a reinforcing rib 267.

[0218] In some embodiments, the side of the support portion 21 away from the first housing is configured to be perpendicular to the axial direction of the tool bit 3a or to be arranged at an angle (not shown in the drawings of the ninth embodiment of the support frame 2a).

[0219] In some embodiments, the support portion 21 is detachably and telescopically connected to the connecting portion 20a.

[0220] In some embodiments, the connecting portion 20a and the supporting portion 21 are detachably connected, the side wall of the connecting portion 20a is provided with at least one third positioning structure 27, the side wall of the supporting portion 21 is provided with at least one fourth positioning structure 28 corresponding to the third positioning structure 27, and the supporting portion 21 is detachably connected to the connecting portion 20a through cooperation of the third positioning structure 27 and the fourth positioning structure 28.

[0221] In the above embodiments, in actual use, the supporting portion 21 can be connected to the connecting portion 20a as needed. Alternatively, only the connecting portion 20a can be mounted on the first shell (the electric tool body), and the end of the connecting portion 20a away from the first shell forms a supporting end. The connecting portion 20a is used as the supporting frame 2a.

[0222] In some embodiments, the third positioning structure 27 is spaced apart in the axial direction, and the fourth positioning structure 28 can be connected to the third positioning structure 27 at different positions to adjust the overall length of the supporting frame 2a.

[0223] In the above embodiments, the overall length of the supporting frame 2a can be adjusted by connecting the fourth positioning structure 28 to the third positioning structure 27 at different positions as needed.

[0224] For example, the first fourth positioning structure 28 of the supporting portion 21 is connected to the first third positioning structure 27 of the connecting portion 20a, and at this time, the overall length of the supporting frame 2a is the shortest. The first fourth positioning structure 28 of the supporting portion 21 is connected to the last third positioning structure 27 of the connecting portion 20a, and at this time, the overall length of the supporting frame 2a is the longest. It should be noted that the first fourth positioning structure 28 of the supporting portion 21 is the fourth positioning structure 28 closest to the first shell. The first third positioning structure 27 of the connecting portion 20a is the third positioning structure 27 closest to the first shell 10, and the last third positioning structure 27 of the connecting portion 20a is the third positioning structure 27 farthest from the first shell 10.

[0225] In some embodiments, in order to make the connecting portion 20a and the supporting portion 21 more firmly connected at different positions, in some embodiments, the fourth positioning structure 28 is spaced apart in the axial direction corresponding to the third positioning structure 27. In the above embodiments, the number of fourth positioning structures 28 can be equal to or not equal to the number of third positioning structures 27, for example, the number of fourth positioning structures 28 can be less than or more than the number of third positioning structures 27. In the present embodiment, the number of third positioning structures 27 can be 2 or 3 or 4.

[0226] In some embodiments, the side wall of the connecting portion 20a is provided with first positioning protrusions 251, and the first positioning protrusions 251 are arranged at intervals in the axial direction. The third positioning structure 27 is a first positioning groove 27a formed by the first positioning protrusions 251 arranged at intervals in the axial direction. The fourth positioning structure 28 is a second positioning protrusion 261 provided on the side wall of the supporting portion 21, and the second positioning protrusions 261 are arranged at intervals in the axial direction. The second positioning groove 28a is formed by the second positioning protrusions 261 arranged at intervals in the axial direction. When the connecting portion 20a is connected to the supporting portion 21, at least one first positioning protrusion 251 is embedded in the second positioning groove 28a, and at least one second positioning protrusion 261 is embedded in the first positioning groove 27a. In the above embodiments, the first positioning protrusions 251 can be arranged on the outer side wall of the connecting portion 20a or on the inner side wall. Correspondingly, the second positioning protrusions 261 can be arranged on the inner side wall of the supporting portion 21 or on the outer side wall.

[0227] In some embodiments, the side wall of the connecting portion includes a first connecting wall extending in the axial direction, and the side wall of the supporting portion includes a second connecting wall extending in the axial direction. The first connecting wall 25 is provided with a first extension hole 253, and the second connecting wall 26 is provided with a second extension hole 264. The first positioning protrusions 251 are arranged at intervals in the axial direction of the first connecting wall. The second positioning protrusions 261 are arranged at intervals in the axial direction of the second connecting wall 26. In some embodiments, the side wall of the connecting portion 20a includes at least two first connecting walls 25, and the side wall of the supporting portion 21 includes an equal number of second connecting walls 26 corresponding to the first connecting walls 25. In some embodiments, the first connecting wall and the second connecting wall can each be provided with only one.

[0228] In the above embodiment, in order to make the support frame 2a have better support effect and make the connecting portion 20a and the support portion 21 be better connected, the first connecting wall 25 and the second connecting wall 26 are each provided with three, and thus the number of the first extension hole 253 and the second extension hole 264 is also three. Since the first connecting wall 25 and the second connecting wall 26 extend along the axial direction, the first extension hole 253 and the second extension hole 264 also extend along the axial direction. In some embodiments, in order to make the first positioning protrusion 251 and the second positioning protrusion 261 have a longer length along the circumferential direction and make the connecting portion 20a and the support portion 21 have better connection effect, the size of some first connecting wall 25 and second connecting wall 26 along the circumferential direction is set to be wider. Due to the reason that the first positioning protrusion 251 and the second positioning protrusion 261 respectively protrude radially outward and radially inward, in the process of connecting the support portion to the connecting portion, the first connecting wall 25 can be aligned with the axial direction in which the second extension hole 264 extends, and the second connecting wall 26 can be aligned with the axial direction in which the first extension hole 253 extends, so that the first positioning protrusion and the second positioning protrusion can be prevented from being stuck. Then, the distance between the support portion 21 and the connecting portion 20a is axially moved according to the length required by the support frame 2a, and then the support portion 21 is rotated, so that the second positioning protrusion 261 on the second connecting wall 26 can be rotated into the first positioning groove 27a, and the first positioning protrusion 251 on the first connecting wall 25 can be rotated into the second positioning groove 28a.

[0229] In some embodiments, the first positioning protrusion 251 and the second positioning protrusion 261 extend along the circumferential direction; one side of the first positioning protrusion 251 along the axial direction is formed with a first limiting structure 254, and one side of the second positioning protrusion 261 along the axial direction is formed with a second limiting structure 262 matched with the first limiting structure 254, so as to limit the rotation of the support portion 21 relative to the connecting portion 20a.

[0230] In some embodiments, the support portion has a disassembly direction rotating around the circumferential direction, the first limiting structure 254 is a first recess 254a formed on the first positioning protrusion 251, so that the first slot 276 of the first positioning groove 27a is narrowed toward the disassembly direction, and the second limiting structure 262 is a third protrusion 262a formed on the second positioning protrusion 261 along the axial direction, and when the support portion 21 is connected to the connecting portion 20a, the third protrusion 262a is embedded into the first recess 254a. In the above embodiment, when the support portion 21 rotates relative to the connecting portion 20a toward the disassembly direction, the groove wall of the first recess 254a limits the third protrusion 262a.

[0231] In the above embodiment, the process of mounting the support portion 21 on the connecting portion 20a is first to align the first connecting wall 25 on the connecting portion 20a with the second extension hole 264, align the second connecting wall 26 with the first extension hole 253, then move the support portion 21 relative to the connecting portion 20a in the axial direction, then rotate the support portion 21 relative to the connecting portion 20a at a proper position according to the length of the support frame 2a as needed, so that the second positioning protrusion 261 is rotated into the first positioning groove 27a and the first positioning protrusion 251 is rotated into the second positioning groove 28a, then press the support portion 21 by hand so that the support portion 21 moves relative to the connecting portion 20a in the axial direction, so that the third protrusion 262a can be embedded into the first recess 254a. Due to the first positioning protrusion 251 being provided with the first recess 254a, in this way, the first positioning groove 27a is narrowed towards the slot opening in the disassembly direction, and when the support portion 21 wants to rotate in the disassembly direction, the slot wall limits the third protrusion 262a and thus limits the rotation of the support portion 21 in the disassembly direction. In this way, during actual operation of the power tool, when the support portion 21 abuts against the machining surface 5a, the third protrusion 262a can be stressed so that it can be embedded in the first recess 254a, and thus the support portion 21 is not easy to rotate relative to the connecting portion 20a in the disassembly direction.

[0232] In the above embodiment, the disassembly direction is the direction of rotating the support portion 21 relative to the connecting portion 20a to disassemble the support portion 21 from the connecting portion 20a.

[0233] In some embodiments, the support portion has a mounting direction of rotating around the circumferential direction, the first positioning groove 27a is provided with a first stop structure 252 at one end facing the mounting direction, and when the support portion 21 rotates relative to the connecting portion 20a in the mounting direction, the second positioning protrusion 261 abuts against the first stop structure 252, thereby limiting the rotation of the support portion 21; and / or the second positioning groove is provided with a second stop structure 263 at one end facing away from the mounting direction, and when the support portion 21 rotates in the mounting direction, the first positioning protrusion 251 abuts against the second stop structure 263, thereby limiting the rotation of the support portion 21.

[0234] In the above embodiment, the mounting direction is the direction of rotating the support portion 21 relative to the connecting portion 20a when the support portion 21 is mounted on the connecting portion 20a.

[0235] In the above embodiment, several directions need to be clarified. When the support portion 21 rotates relative to the connecting portion 20a in the mounting direction, at this time the connecting portion 20a rotates relative to the support portion 21 in the disassembly direction, therefore the second positioning groove 28a is provided with a second stop structure 263 facing the disassembly direction, at this time the first positioning protrusion 251 abuts against the second stop structure 263.

[0236] In the above embodiments, the support frame 2a can limit the relative movement between the support portion 21 and the connecting portion 20a as long as one of the first stop structure 252 and the second stop structure 263 is provided. Of course, the effect is better when both of them are provided. In the case where both of them are provided, when the support portion 21 is mounted on the connecting portion 20a, the end of the connecting portion 20a away from the first housing can be prevented from being clamped in the second positioning groove 28a when the first connecting wall 25 is aligned with the second extending hole 264.

[0237] In some embodiments, the first stop structure 252 is a first protrusion 252a protruding in the radial direction of the connecting portion 20a, and the first protrusion 252a extends in the axial direction; and / or the second stop structure 263 is a second protrusion 263a protruding in the radial direction of the support portion 21, and the second protrusion 263a extends in the axial direction.

[0238] In some embodiments, the tail portion 269 of the connecting portion 20a is further provided with a third limiting structure, which is a sixth protrusion 268 protruding from the tail portion 269 of the connecting portion 20a. When the support portion 21 is to be mounted on the connecting portion 20a, the second protrusion 263a is abutted against the sixth protrusion 268, and then the support portion 21 is moved in the axial direction towards the connecting portion 263a until the support portion 21 abuts against the third limiting structure 270 of the connecting portion 263a. Then, due to the sixth protrusion 268, the support portion 21 can only rotate in the mounting direction relative to the connecting portion 263a.

[0239] In some embodiments, the head portion of the connecting portion is further provided with a first positioning structure 271 protruding in the radial direction, and the first housing 10 is provided with a second positioning structure 272. When the support frame 2a is mounted on the power tool through the connecting portion, the matching of the first positioning structure 271 and the second positioning structure 272 can help the user to know the correct mounting direction of the connecting portion. In some embodiments, the first positioning structure 271 is a protrusion, and the second positioning structure 272 is a groove.

[0240] In the above embodiments, there are many ways to provide the first stop structure 252 and the second stop structure 263, and the protrusion is only one of the ways. The protrusion can also be a protrusion.

[0241] In some embodiments, the support portion has a mounting direction rotating in the circumferential direction, and the end of the second positioning protrusion 261 towards the mounting direction is a pointed structure 265, and the end of the first positioning protrusion 251 away from the mounting direction is a pointed structure 265. In this way, when the support portion 21 rotates relative to the connecting portion 20a in the mounting direction, the end of the first positioning protrusion 251 and the end of the second positioning protrusion 261 can be prevented from abutting to make the support portion 21 unable to rotate relative to the connecting portion 20a.

[0242] It needs to be understood that when the support part 21 rotates relative to the connecting part 20a in the mounting direction, at this time the connecting part 20a rotates relative to the support part 21 in the dismounting direction, therefore the end of the first positioning protrusion 251 away from the mounting direction is provided as a pointed structure 265, and the direction away from the mounting direction is the dismounting direction.

[0243] In some embodiments, the distance between adjacent first positioning protrusions 251 is 1 cm, and the first connecting wall 25 and the second connecting wall 26 are provided in an interference fit when the support part 21 is sleeved on the connecting part 20a. By providing the first connecting wall 25 and the second connecting wall 26 in an interference fit, the connection between the support part 21 and the connecting part 20a can be made more stable.

[0244] In other embodiments, the distance between adjacent first positioning protrusions 251 can also be 2 cm, 3 cm, or 4 cm.

[0245] The distance between adjacent first positioning protrusions 251 is 1 cm, and the first connecting wall 25 and the second connecting wall 26 are provided in an interference fit when the support part 21 is sleeved on the connecting part 20a.

[0246] The length of the support frame 2a is configured such that when the tap head and the support frame 2a are mounted on the electric tool, the end of the support frame 2a away from the first housing is located at the threaded section of the tap head. In this way, during tapping, the part of the tool bit 3a without the threaded section will not be tapped into the hole, thereby damaging the tapped thread hole.

[0247] Please refer to the electric tools of Embodiment 1 to Embodiment 4, as shown in FIGS. 1-1 to 1-28.

[0248] This embodiment also demonstrates electric tools of other embodiments.

[0249] In some embodiments, as shown in FIGS. 1-1 to 1-8, the first housing 10 includes a first housing side shell 10a, a first reinforcing shell 10d, and a second reinforcing shell 10e. The first housing side shell 10a extends in the axial direction and is formed with two convex shells 101a at the front and rear ends. The first reinforcing shell 10d and the second reinforcing shell 10e respectively surround and are sleeved on the two convex shells 101a. A first opening 1000 penetrates the first reinforcing shell 10d and the front end of the first housing side shell 10a and is in communication with the space defined inside the first housing side shell 10a. In some embodiments, the first reinforcing shell 10d and the second reinforcing shell 10e are made of metal material.

[0250] In some embodiments, as shown in FIG. 1-6, the first reinforcing shell 10d is provided with a mounting hole 101d, and the first reinforcing shell 10d is detachably connected to the first housing side shell 10a through the mounting hole 101d.

[0251] In some embodiments, as shown in FIGS. 1-3 and 1-9, the second housing 12 comprises a second housing body 12a and a connecting shell 12b, the second housing body 12a is formed in an axial direction, the connecting shell 12b is connected with the second housing body 12a by clamping, the second opening 1200 is formed through the connecting shell 12b and the front end of the second housing body 12a, and the second opening 1200 is in communication with the space defined in the second housing body 12a. In other embodiments, the second housing body 12a can also be integrally welded or glued with the connecting shell 12b.

[0252] In other embodiments, the first housing 10 and the second housing can be a pair of half shells that are detachably connected, and the pair of half shells can be connected by threads.

[0253] In some embodiments, a handheld power tool for at least one of an electric screwdriver, an electric drill, and tapping includes a power tool body 1a, the power tool body 1a comprising: a first housing 10 for being held by a user; a driving mechanism 11 having an output end for being connected with a tool bit 3a and driving the tool bit 3a to rotate; and the driving mechanism 11 is further configured to be able to synchronously move with the tool bit 3a as a whole relative to the first housing 10. The power tool body 1a further comprises a second housing 12, the second housing 12 is at least partially nested in the first housing 10 and the second housing 12 is slidingly connected relative to the first housing 10; the driving mechanism 11 is at least partially accommodated in the second housing 12; the second housing 12 is configured to be able to synchronously move with the tool bit 3a and the driving mechanism 11 as a whole relative to the first housing 10. The power tool has a forward direction and a backward direction, the forward direction is parallel or consistent with a feeding direction of the tool bit 3a, and the backward direction is parallel or consistent with a retreating direction of the tool bit 3a, the first housing 10 has a first opening 1000 formed at a front end thereof, and the second housing 12 has a second opening 1200 formed at a front end thereof; when the power tool is used for machining, the first opening 1000 and the second opening 1200 are arranged towards a machining surface 5a.

[0254] The first shell 10 is provided with a third opening 1001 at one end away from the first opening 1000, and when the second shell 12 moves backward relative to the first shell 10, one end of the second shell 12 away from the second opening 1200 can move to the outside of the third opening 1001; wherein the direction in which the second shell 12 moves backward relative to the first shell 10 is consistent or parallel with the direction in which the tool bit 3a retreats. The second shell 12 extends in the axial direction, and the second shell 12 is provided with a fourth opening 1201 at one end away from the second opening 1200, and the fourth opening 1201 is connected with a display screen 1801, and the display screen 1801 moves synchronously with the second shell 12. The electric tool has a maximum stroke protection mode, and the maximum stroke protection mode is the unlocking of the movement of the second shell 12 relative to the first shell 10, and when the tool bit 3a feeds, the second shell 12 moves forward relative to the first shell 10 to the first specified position of the first shell 10 to interrupt the rotation transmission of the driving mechanism 11 to the tool bit 3a. The electric tool body 1a further comprises a guide structure 15 arranged in the first shell 10, and the guide structure 15 is used for guiding the movement of the second shell 12. The second shell 12 is provided with a protruding portion 1202, and the guide structure 15 comprises a guide hole 1501 arranged on the protruding portion 1202; the guide structure 15 further comprises a guide shaft 1502 connected with the first shell 10 and slidingly connected with the second shell 12 through the guide hole 1501 to guide the movement of the second shell 12.

[0255] The electric tool body 1a further comprises a first reset member 119, and when the second shell 12 moves backward relative to the first shell 10, the first reset member 119 generates a reset tendency to the second shell 12; the first reset member 119 is a second elastic member 119a, which is hiddenly arranged in the first shell 10 and sleeved on the guide shaft 1502, and when the second shell 12 moves backward relative to the first shell 10, the protruding portion 1202 compresses or stretches the second elastic member 119a, so that the second elastic member 119a generates a reset force to the second shell 12 in the direction opposite to the movement direction of the second shell 12; wherein the direction in which the second shell 12 moves backward relative to the first shell 10 is consistent or parallel with the direction in which the tool bit 3a retreats.

[0256] In some embodiments, the second elastic member 119a is hiddenly arranged in the first shell 10, sleeved on the guide shaft 1502, and arranged at the rear side of the protruding portion 1202, and at this time, the second elastic member 119a is a compression spring.

[0257] In some embodiments, the electric tool body 1a further comprises a resilient force adjusting structure, which comprises N second clamping grooves arranged on the first shell side shell and spaced apart along the axial direction; the resilient force adjusting structure further comprises a resilient force adjusting member slidingly connected to the guide shaft; the second elastic member is arranged between the protruding portion and the resilient force adjusting member; the first shell side shell is provided with a sliding groove extending along the axial direction, and the sliding groove is in communication with the second clamping groove; the resilient force adjusting member can move in the sliding groove and be clamped into the corresponding second clamping groove to stretch or compress the second elastic member, and N is greater than or equal to 2.

[0258] In some embodiments, FIGS. 1-3 and 1-13 show a structural schematic diagram of the setting position of the first reset member 119 of another embodiment of the electric tool of the present application; the second shell 12 is provided with a first protruding portion 1202a and a second protruding portion 1202b, which are used to guide the movement of the second shell 12; the first protruding portion 1202a and the second protruding portion 1202b are arranged on the right side and the left side of the second shell 12 respectively, and the setting heights of the first protruding portion 1202a and the second protruding portion 1202b in the up-down direction are inconsistent, and the setting height of the first protruding portion 1202a is higher than that of the second protruding portion 1202b; as shown in FIG. 1-13, the lower side wall of the first protruding portion 1202a and the inner side wall of the first shell 10 jointly define a first containing space 113; the upper side wall of the second protruding portion 1202b and the inner side wall of the first shell 10 jointly define a second containing space 114, and the second elastic member 119a is provided with two; the two second elastic members 119a are arranged in the first containing space 113 and the second containing space 114 respectively; each second elastic member 119a is connected with the first shell 10 and the second shell 12 at both ends respectively; or the first shell 10 is connected with two guide shafts 1502; the first protruding portion 1202a and the second protruding portion 1202b are both provided with guide holes 1501, and the two guide shafts 1502 pass through the two guide holes 1501 respectively; the two second elastic members 119a are sleeved on the two guide shafts 1502 respectively.

[0259] In the above embodiment, in the case where the first housing 10 is symmetrically arranged along the axial direction, by arranging the two protruding portions 1202 with different heights, the different side walls of the two protruding portions 1202 form accommodating spaces with the inner side wall of the first housing 10, and the sizes of the accommodating spaces are approximately consistent. In this way, the second housing 12 can be arranged to be wider in the limited space of the first housing 10, and the two elastic members are arranged in the accommodating cavities instead of being sleeved on the guide shaft 1502. This can reduce the area occupied by the elastic members when the elastic members are compressed to the extreme when the second housing 12 moves relative to the first housing 10, and thus the movement stroke of the second housing 12 relative to the first housing 10 can be increased in the limited space of the first housing 10, and the overall volume is more compact.

[0260] In some embodiments, as shown in FIGS. 1-17 and 1-18, the first housing 10 is provided with a third face 1003 at the rear end, and the first face 1002 is arranged at the front end of the first housing 10. The guide shaft 1502 is connected to the first face 1002 and the third face 1003 at the two ends, respectively.

[0261] In some embodiments, the first housing extends along the axial direction to form a first housing side shell. The first housing side shell is provided with a fifth opening extending along the axial direction. The second housing is provided with a connecting position corresponding to the position of the fifth opening. The connecting position is configured to be connectable to a locking structure and / or an auxiliary handle and / or a gear shifting assembly. The gear shifting assembly is used to adjust the rotation speed of the tool bit transmitted by the output end of the driving mechanism.

[0262] In some embodiments, as shown in FIGS. 1-2, 1-3 and 1-15, the locking structure is a lock cover rotatably connected to the second housing. When the lock cover covers the fifth opening and abuts against the edge of the fifth opening, the movement of the second housing relative to the first housing is locked. When the lock cover is completely opened, the lock cover is at least partially exposed from the fifth opening, and the movement of the second housing relative to the first housing is unlocked. In some embodiments, the lock cover is in the shape of a long strip. By arranging the lock cover 1404 in the shape of a long strip, the lock cover 1404 can not only assist the user in applying force, but also lock the movement of the second housing 12 relative to the first housing 10 when needed. During the use of the electric wrench, it is usually necessary to keep the movement of the second housing 12 relative to the first housing 10 locked. At this time, the lock cover 1404 can be covered. In some embodiments, when the lock cover covers the fifth opening, the free end of the lock cover is away from the edge of the fifth opening by a certain distance. In this way, the lock cover can be opened a little better each time. In some embodiments, the rotating end of the lock cover is away from the edge of the fifth opening by a certain distance, so that the lock cover is not damaged each time.

[0263] In some embodiments, FIG. 1-3, FIG. 1-4, FIG. 1-5, FIG. 1-7, FIG. 1-10 show structural schematic diagrams of the setting position of the gear shifting assembly 13 of some embodiments of the power tool of the present application; a sixth opening is formed on the second housing at a corresponding connecting position; the gear shifting assembly (also referred to as a gear shifting mechanism) comprises a gear shifting piece (also referred to as a shifting structure), which is movably connected to the second housing and arranged at the sixth opening; the driving mechanism further comprises a reducer and a motor, the reducer is connected to the motor in the axial direction, and the second housing extends in the axial direction; the reducer comprises a speed change shifting piece, which is movable relative to the reducer body, and the gear shifting piece can actuate the speed change shifting piece to move through the sixth opening; when the gear shifting piece moves, the speed change shifting piece can be actuated to move so that the speed reduction ratio of the reducer changes.

[0264] In some embodiments, the shifting component 1301 has at least a part of its structure extending into the sixth opening 1203 to trigger the action of the shift paddle 1102b. In some other embodiments, the shifting assembly 13 further comprises N intermediate components in addition to the shifting component 1301 and the shift paddle 1102b, and the shifting component 1301 triggers the action of the shift paddle 1102b by acting on the N intermediate components. In some embodiments, as shown in FIGS. 1-3, 1-7 and 1-9, the sixth opening 1203 extends through the second housing body 12a and the connecting shell 12b; in some other embodiments, as shown in FIG. 1-10, the second housing 12 can not comprise the connecting shell 12b, and the sixth opening 1203 is formed on the second housing body 12a. In some embodiments, the second housing does not comprise the connecting shell or the auxiliary housing, and the second housing is composed of two halves. In some embodiments, the fifth opening and the sixth opening are oriented in the same direction. In some embodiments, as shown in FIGS. 1-3 to 1-7, the shifting assembly further comprises a first movable component, which is movably connected to the shifting component and is slidably connected to a first movable cavity formed between the second housing and the reducer body; when the shifting component is moved, the shifting component drives the first movable component to move to a second position, so that the first movable component can push the shift paddle to move and change the reduction ratio of the reducer. In some embodiments, as shown in FIGS. 1-3 and 1-4, the cavity wall of the first movable cavity 115 is provided with a clamping groove, and the first movable component 1302 is provided with a clamping strip 13021 which is clamped with the clamping groove. In some embodiments, as shown in FIG. 1-9, the second housing 12 is provided with a third clamping groove 121b, and the clamping strip 13021 of the first movable component 1302 is movably connected to the second housing 12 through the third clamping groove 121b. It should be noted that the clamping connection of the clamping groove and the clamping strip or the clamping convex in the present embodiment is only a positioning connection between two components. In another embodiment, the reducer body 1102a is provided with a clamping groove, and the clamping strip 13021 of the first movable component 1302 is movably connected to the reducer body 1102a through the clamping groove. In some embodiments, the connecting shell 12b and the second housing body 12a are both provided with a third clamping groove 121b, and the first movable component 1302 is movably clamped with the connecting shell 12b through the third clamping groove 121b. The connecting shell 12b is threadedly connected to the second housing body 12a through the connecting through hole.

[0265] In some embodiments, as shown in FIG. 1-7 and FIG. 1-10, the inner recess of the first movable member 1302 defines a first cavity 116. The power tool body 1a comprises a control mainboard, the driving mechanism comprises a motor, the first movable member defines the first cavity, and the speed change dial is arranged in the first cavity. The gear shifting assembly further comprises a third elastic member and a second position sensor, the second position sensor is used to detect whether the first movable member reaches the third position, the third elastic member is arranged between the cavity wall of the first cavity and the speed change dial, and the second position sensor is electrically connected with the control mainboard. When the gear shifting member drives the first movable member to move to the second position, the first movable member pushes the speed change dial to move so that the speed reduction ratio of the speed reducer changes. When the gear shifting member is moved again, the gear shifting member pushes the first movable member to compress the third elastic member and the first movable member moves to the third position in the same direction. The second position sensor detects the signal and sends the signal to the control mainboard so that the control mainboard controls the speed of the motor output to change.

[0266] It should be noted that when the gear shifting member 1301 pushes the first movable member 1302 to compress the third elastic member 1303 and the first movable member 1302 moves to the third position in the same direction, at this time, since the speed change dial 1102b has moved to the limit position, the speed change dial will not move, but the first movable member 1302 will continue to move in the same direction and compress the third elastic member until the second position sensor 1304 detects that the first movable member 1302 moves to the third position. Generally, the rear end of the first movable member 1302 can be provided with a magnet, the second position sensor 1304 is a Hall sensor, and the second position sensor 1304 is connected to the second housing 12 and arranged in the moving direction of the first movable member 1302. Alternatively, the second position sensor 1304 is an optical sensor, or an infrared sensor, or other sensors, or the second position sensor 1304 is arranged on the first movable member 1302, and the magnet is arranged on the second housing 12. Of course, in other embodiments, the second position sensor 1304 can also be connected to the first housing 10, and the control mainboard 111 is connected to the first housing 10.

[0267] In the above embodiments, when the speed change dial moves so that the speed reduction ratio of the speed reducer changes, the power tool switches from the first gear to the second gear. When the second position sensor detects that the first movable member moves to the third position and sends a signal so that the speed of the motor changes, the power tool switches from the second gear to the third gear.

[0268] As shown in FIG. 1-4, the gear adjusting member 1301 can be a gear adjusting knob 1301a or a gear adjusting dial. When the gear adjusting member 1301 is the gear adjusting knob 1301a, the maximum speed of the output end of the driving mechanism 11 transmitted to the tool bit 3a is i, for example, in the electric drill mode. When the gear adjusting knob 1301a is rotated to move the first movable member 1302 to the first specified position, the first movable member 1302 pushes the speed reducer dial 1102b to move, so that the speed reduction ratio of the speed reducer 1102 changes, and the speed of the output end of the driving mechanism 11 transmitted to the tool bit 3a changes. At this time, the electric tool is switched from the electric drill mode to the electric screwdriver mode (at this time, the electric tool is switched from the first gear to the second gear), and the maximum speed of the output end of the driving mechanism 11 transmitted to the tool bit 3a is ii. When the gear adjusting knob 1301a is rotated again in the same direction, the gear adjusting member 1301 pushes the first movable member 1302 to move in the same direction and compresses the third elastic member 1303, and the first movable member moves to the third position. The second position sensor 1304 detects that the first movable member moves to the third position and sends a signal to the control mainboard 111, so that the control mainboard 111 controls the speed of the motor 1103 output to change the speed of the output end of the driving mechanism 11 transmitted to the tool bit 3a. At this time, the electric tool is switched from the electric screwdriver mode to the tapping mode, and the electric tool is switched from the second gear to the third gear, and the maximum speed of the output end of the driving mechanism 11 is iii. The signal detected by the second position sensor 1304 is the signal that the first movable member 1302 moves to the third position in the same direction.

[0269] When the gear adjusting member 1301 is the gear adjusting dial, the gear adjusting dial moves the first movable member 1302 in a straight line.

[0270] In the above embodiment, the electric tool is switched from the first gear to the second gear and from the second gear to the third gear, and the moving direction of the first movable member 1302 is the first direction. When the electric tool is switched from the third gear to the second gear and from the second gear to the first gear, the moving direction of the first movable member 1302 is the second direction, and the first direction and the second direction are opposite directions along the axial direction.

[0271] In the above embodiment, when the power tool switches from the third gear to the second gear, the first movable member 1302 moves in the second direction to the second position, so that the second position sensor 1304 cannot detect the signal of the first movable member 1302 at the third position, so that the signal transmitted to the control mainboard 111 changes, so that the rotating speed of the motor 1103 changes, so that the rotating speed transmitted to the output end of the driving mechanism 11 changes. In this process, the elastic force of the third elastic member 1303 is released, and the third elastic member 1303 returns to the uncompressed state. When the first movable member 1302 moves in the second direction to the second position, the second position sensor 1304 detects that the first movable member 1302 is at the second position and adjusts the rotating speed of the motor 1103, so that the power tool switches from the third gear to the second gear. When the power tool switches from the second gear to the first gear, the first movable member 1302 continues to move in the second direction to a gear position and pushes the gear shifting piece 1102b in the second direction, so that the speed reduction ratio of the speed reducer 1102 changes, so that the rotating speed transmitted to the driving mechanism 11 changes.

[0272] In another embodiment, the gear shifting member 1301 and the first movable member 1302 can be integrally connected or connected in other ways. When the gear shifting member 1301 is a gear shifting piece, the gear shifting member 1301 and the first movable member 1302 can be integrally connected.

[0273] In some embodiments, as shown in FIGS. 1-7, the third elastic member is arranged between the front cavity wall of the first cavity and the gear shifting piece, and the second position sensor is arranged on the moving direction of the first movable member or the side of the moving direction of the first movable member. When the first movable member moves backward to the third position, the second position sensor senses the signal, and the control mainboard controls the rotating speed of the motor.

[0274] In some embodiments, as shown in FIGS. 1-7, the inner wall of the second shell 12 is inwardly convex to form a mounting portion 1208 for mounting the second position sensor 1304. The mounting portion 1208 is provided with a mounting gap, and the second position sensor is arranged at the mounting gap. The wires connected to the second position sensor 1304 pass through the mounting gap and are electrically connected to the control mainboard 111 mounted at the rear end of the second shell 12. In some embodiments, the driving mechanism 11 includes a cooling fan connected to the rear end of the motor 1103. The cooling fan is provided with a wire limiting structure, and the wires of the second position sensor 1304 pass through the wire limiting structure and are connected to the control mainboard 111.

[0275] In another embodiment, the control mainboard 111 extends upward to the moving direction of the first movable member, and the second position sensor 1304 is mounted on the control mainboard 111.

[0276] In some embodiments, a third elastic member 1303 can also be arranged between the rear cavity wall of the first cavity 116 and the gear shift paddle 1102b, and the second position sensor 1304 is arranged on the first movable member 1302 in the direction of movement or on the side of the direction of movement of the first movable member 1302. When the first movable member 1302 moves forward, the gear shift paddle 1102b is first triggered to move, so that the reduction ratio of the speed reducer 1102 changes, and when it moves forward again, the motor 1103 is triggered to change the output speed.

[0277] In some embodiments, as shown in FIGS. 1-4, the gear shift member 1301 is a gear shift knob 1301a, the gear shift knob 1301a is rotationally connected with the second housing 12, the gear shift knob 1301a is provided with first clamping teeth 13011, and the first movable member 1302 is provided with second clamping teeth 13022 corresponding to the first clamping teeth 13011, the first clamping teeth 13011 and the second clamping teeth 13022 are engaged.

[0278] In other embodiments, the gear shift member is movably connected to the first housing 10, the first housing 10 is provided with a protruding opening, when the second housing 12 moves to the sixth opening 1203 and the protruding opening provided on the first housing 10 is aligned, the gear shift member can trigger the first movable member 1302 to move through the protruding opening on the first housing 10 and the sixth opening 1203, thereby triggering the gear shift paddle 1102b to move and triggering the second position sensor 1304 to send a signal. The position settings of the first movable member 1302 and the second position sensor 1304 in the above-mentioned embodiments can also be applied to this embodiment, and the specific settings of the first movable member 1302 and the second position sensor 1304 are not repeated here.

[0279] In some embodiments, as shown in FIGS. 1-3 to 1-5, the second housing 12 is connected with a connecting protrusion 1205 at the connecting position, the connecting protrusion 1205 at least partially protrudes from the fifth opening 1005, and the connecting protrusion 1205 is provided with a connecting hole 1205a; when the auxiliary handle 4a is connected to the second housing 12, the auxiliary handle 4a can be detachably connected to the second housing 12 through the connecting hole 1205a; the gear shift assembly 13 includes a gear shift knob 1301a, and the gear shift knob 1301a is rotationally connected to the second housing 12 through the connecting protrusion 1205.

[0280] In some embodiments, the connecting hole 1205a is arranged substantially perpendicular to the axial direction of the tool bit 3a; when the auxiliary handle 4a is threadedly connected to the second housing 12 through the connecting hole 1205a, the auxiliary handle 4a is substantially perpendicular to the axial direction of the tool bit 3a.

[0281] In some embodiments, the connecting protrusions 1205 are provided with two, each of which is provided with a connecting hole 1205a, and the two connecting holes 1205a are parallel in direction; at least one of the connecting holes 1205a is used for connecting the auxiliary handle 4a when the auxiliary handle 4a is connected to the second shell 12 through the connecting hole 1205a; a connecting shaft 1205b is connected between the two connecting holes 1205a, and the gear shifting member 1301 is rotatably connected to the second shell 12 through the connecting shaft 1205b; and the sixth opening 1203 is located between the two connecting protrusions 1205.

[0282] By providing two connecting holes 1205a, the user can choose to install on the appropriate connecting hole 1205a according to the habit of hand force.

[0283] In some embodiments, Figs. 1-15 show the structure of the setting position of the gear shifting structure of another embodiment of the electric tool of the present application; the gear shifting member 1301 is a gear shifting knob 1301a and is connected to the fourth opening 1201 of the second shell and is electrically connected to the control main board 111.

[0284] Further, the connecting protrusions 1205 are detachably connected to the second shell body 12a. This embodiment also shows the locking structure of another embodiment.

[0285] In some embodiments, as shown in Figs. 1-3 to 1-13, the electric tool body 1a is provided with a locking structure 14 for locking and / or unlocking the movement of the second shell 12 relative to the first shell 10.

[0286] In some embodiments, when the support frame 2a is connected to the electric tool body 1a through the first shell, the first shell 10 is disconnected from the second shell 12, and the movement of the second shell 12 relative to the first shell 10 is unlocked.

[0287] When the support frame 2a is detached from the electric tool body 1a, the first shell 10 is connected to the second shell 12, and the movement of the second shell 12 relative to the first shell 10 is locked.

[0288] In some embodiments, when the support frame 2a is connected to the electric tool body 1a, the support frame 2a is connected to the first shell 10. Specifically, as shown in FIG. 1-1, the first shell 10 is provided with a first opening 1000, and one end face of the first opening 1000 is provided with a first clamping opening 1006. The support frame 2a is correspondingly provided with a clamping hook 202a. In order to firmly fix the support frame 2a to the first shell 10, a magnet can also be connected to the first shell 10, and a magnet that is attracted to each other is connected to the support frame 2a. When the support frame 2a is installed on the electric tool body 1a, it can be firmly connected to the first shell 10 under the attraction of the magnet. Of course, the support frame 2a and the first shell 10 also have other connection modes. When the support frame 2a is installed on the electric tool, the support frame 2a is configured to move synchronously with the first shell 10. The second shell 12 and the first shell 10 are directly or indirectly disconnected. The first shell 10 can move relative to the second shell 12.

[0289] In this way, when the user holds the electric tool 1 and the tool bit 3a contacts the machining surface, the support frame 2a and the first shell 10 move synchronously as a whole relative to the second shell 12 until the support frame 2a abuts against the machining surface.

[0290] When the support frame 2a is detached from the electric tool body 1a, the first shell 10 is directly or indirectly connected to the second shell 12, and the movement of the second shell 12 relative to the first shell 10 is locked.

[0291] Generally, when the user uses the electric tool for electric tapping or electric drilling, the user will detach the support frame 2a. In this way, the movement of the first shell 10 relative to the second shell 12 is locked. Because the tool bit 3a of the electric tool is not easy to shake relative to the machining surface when drilling or tapping, the user will install the support frame 2a when using the electric tool for electric drilling or tapping. In this way, the movement of the first shell 10 relative to the second shell 12 is unlocked.

[0292] In some embodiments, the first shell 10 or the second shell 12 is connected to a deformation member. When the support frame 2a is connected to the body of the electric tool, the support frame 2a abuts against the deformation member, so that the first shell 10 and the second shell 12 are disconnected. When the support frame 2a is detached from the electric tool, the first shell 10 and the second shell 12 are connected through the deformation member, and the movement of the second shell 12 relative to the first shell 10 is locked.

[0293] In some embodiments, as shown in FIGS. 1-3 to 1-13, the locking structure 14 comprises a second movable member 1401 and a second reset member 1405. The second movable member 1401 is movably connected to the first housing 10. When the support frame 2a is connected to the power tool body 1a, the support frame 2a is connected to the first housing 10, and the second movable member 1401 is moved by the support frame 2a to be disengaged from the second housing 12, and the movement of the second housing 12 relative to the first housing 10 is unlocked. When the support frame 2a is detached from the power tool body 1a, the second movable member 1401 is reset under the reset force of the second reset member 1405, the first housing 10 is connected to the second housing 12 through the second movable member 1401, and the movement of the second housing 12 relative to the first housing 10 is locked.

[0294] In the present embodiment, as shown in FIGS. 1-6, 1-7, 1-11, 1-12 and 1-13, the second movable member 1401 is movably connected to the first housing 10. Specifically, the second movable member 1401 is provided with second clamping protrusions 14012 on the left and right sides or the upper side or the rear side, and the first housing 10 is provided with first connecting cavities 117, and the cavity walls of the first connecting cavities 117 are provided with clamping grooves corresponding to the second clamping protrusions 14012 or other clamping connection modes. The clamping connection of the present embodiment can be only a positioning connection between two components.

[0295] In some embodiments, the second reset member 1405 is arranged in the moving direction of the second movable member 1401. The second reset member 1405 can be a tension spring, a compression spring, a tension rope, an elastic sheet, two mutually attractive magnets, two mutually repulsive magnets, or an elastic member.

[0296] In some embodiments, when the support frame 2a is installed on the power tool body 1a, it can be connected to the first housing 10 through N intermediate components, and the intermediate components move synchronously with the first housing 10.

[0297] In some embodiments, Figs. 1-10 to 1-13 show another locking structure 14 of another embodiment of the electric tool; the first shell 10 defines a first connecting cavity 117, and a second movable piece 1401 is movably connected at least partially in the first connecting cavity 117; the second reset piece 1405 is a fourth elastic piece, and the second reset piece 1405 is arranged between the cavity wall of the first connecting cavity 117 and the second movable piece 1401; the locking structure 14 further comprises a first recess 1402, which is defined for the second shell 12; when the support frame 2a is mounted on the electric tool body 1a, the support frame 2a moves against the second movable piece 1401 so that the second movable piece 1401 compresses the second reset piece and disengages from the first recess 1402, and the movement of the second shell 12 relative to the first shell 10 is unlocked; when the support frame 2a is detached from the electric tool body 1a, the second movable piece 1401 moves under the action of the second reset piece 1405 and is clamped in the first recess 1402, and the movement of the second shell 12 relative to the first shell 10 is locked, wherein the second shell is locked and connected with the first shell through the second movable piece.

[0298] In some embodiments, as shown in Fig. 1-12, the second movable piece 1401 has an up-down direction, a front-rear direction and a left-right direction, the up-down direction, the front-rear direction and the left-right direction are perpendicular to each other, and the second movable piece 1401 moves along the up-down direction; a first clamping protrusion 14011 is arranged on the side of the second movable piece 1401 facing the second shell 12, and the first clamping protrusion 14011 can be clamped in the first recess 1402 under the action of the second reset piece 1405; a first guide surface 14017 is further arranged on the front side of the second movable piece 1401, which can be an inclined surface or an arc surface; when the support frame 2a is mounted on the electric tool body 1a, the support frame 2a moves against the first guide surface so that the second movable piece 1401 is forced to disengage from the first recess 1402, and the movement of the second shell 12 relative to the first shell 10 is unlocked; when the support frame 2a is detached from the electric tool body 1a, when the first clamping protrusion 14011 of the second movable piece 1401 is clamped in the first recess 1402 under the action of the second reset piece 1405, the movement of the second shell 12 relative to the first shell 10 is locked.

[0299] In some embodiments, the support frame 2a is correspondingly provided with a clamping hook, and the clamping hook is correspondingly provided with an inclined surface or an arc surface. In some embodiments, as shown in Fig. 1-13, two locking structures 14 are arranged on the upper and lower sides of the first shell 10.

[0300] In some embodiments, the moving direction of the support frame 2a when it moves against the second movable piece 1401 is perpendicular to the moving direction of the second movable piece 1401 when it disengages from the first recess 1402.

[0301] In some embodiments, Figs. 1-3 to 1-7 show the structure of the locking structure 14 in the setting position of another embodiment of the electric tool of the present application. The second movable piece 1401 is provided with a locking slot 14016, and the locking structure 14 further comprises a first locking protrusion 1403. The first locking protrusion 1403 is protruded from the second housing 12. When the support frame 2a is mounted on the electric tool body 1a, the support frame 2a is connected with the first housing 10 through the second movable piece 1401. The support frame 2a is moved to abut against the second movable piece 1401, so that the second movable piece 1401 is rotated to the fifth specified position and the second return piece 1405 is compressed or stretched, so that the locking slot 14016 is aligned with the first locking protrusion 1403, and the movement of the second housing 12 relative to the first housing 10 is unlocked. When the support frame 2a is detached from the electric tool body 1a, the second movable piece 1401 is reset to rotate to the sixth specified position under the action of the second return piece 1405, the locking slot 14016 is misaligned with the first locking protrusion 1403, and the locking surface 14013 on the second movable piece 1401 is arranged opposite to the first locking protrusion 1403, so that the movement of the second housing 12 relative to the first housing 10 is locked.

[0302] In some embodiments, the first locking protrusion 1403 is arranged at intervals of n in the circumferential direction of the second housing 12, and n is greater than or equal to 2. In some embodiments, the first locking protrusion 1403 is arranged at intervals of 4 or more, which can further improve the uniformity of stress.

[0303] When the support frame 2a is mounted on the electric tool body 1a, the support frame 2a is moved to abut against the second movable piece 1401, so that the second movable piece 1401 is rotated until the locking slot 14016 on the second movable piece 1401 is aligned with the first locking protrusion 1403. At this time, the locking slot 14016 can pass through the first locking protrusion 1403, and the second housing 12 can move relative to the first housing 10. When the locking slot 14016 is misaligned with the first locking protrusion 1403, the first locking protrusion 1403 cannot pass through the locking slot 14016. If the second housing 12 moves backward relative to the first housing 10, the first locking protrusion 1403 abuts against the locking surface 14013, and the movement of the second housing 12 relative to the first housing 10 is locked.

[0304] In some embodiments, as shown in Fig. 1-9, in order to better assemble and improve the strength, the second housing 12 further comprises a connecting shell 12b, which is clamped with the second housing body 12a. The first locking protrusion 1403 is arranged on the connecting shell 12b. In some embodiments, the connecting shell 12b and the second housing body 12a can be integrally connected, such as welding, or can be connected by adhesive.

[0305] In some embodiments, the connecting shell 12b is made of metal material, and the connecting shell 12b comprises the adjusting part 122b and the locking part 123b, and the locking part 123b is provided with n first locking protrusions 1403 at intervals. Since the first locking protrusions 1403 and the locking surface 14013 of the second movable part 1401 are in abutment when the movement of the second shell 12 relative to the first shell 10 is locked and the tool bit 3a is abutted on the machining surface, the first locking protrusions 1403 and the second movable part 1401 are the main stress parts, and therefore the carrier (the locking part 123b) carrying the first locking protrusions 1403 is made of metal material, which can improve the strength. As shown in FIGS. 1-4, 1-5 and 1-9, since the part of the second shell 12 connecting the auxiliary handle 4a is the main stress part, and the auxiliary handle 4a is connected to the connecting protrusion 1205, the connecting protrusion 1205 is the main stress part, and the connecting protrusion 1205 is made of metal material. Since the connecting protrusion 1205 is connected to the adjusting part 122b of the connecting shell 12b through the second shell body 12a, the adjusting part 122b of the connecting shell 12b is also made of metal material. Specifically, as shown in FIG. 1-9, the second shell body 12a is provided with a first mounting hole 1216 for mounting the adjusting part 122b, and the second shell body 12a is provided with a connecting through hole 125, and the adjusting part 122b and the connecting protrusion 1205 are also provided with a connecting through hole 125. The three are threadedly connected through the connecting through hole 125. Further, the sixth opening 1203 penetrates the adjusting part of the connecting shell 12b, and the adjusting part is provided with a third clamping groove 121b, and the first movable part 1302 is clamped and connected through the third clamping groove 121b. Further, the sixth opening 1203 is recessed in the wall of the opening to form an arc surface matching the shape of the adjusting knob 1301a, so that the first clamping tooth 13011 of the adjusting part 1301 can engage with the second clamping tooth 13022 on the first movable part 1302. Further, the second opening 1200 penetrates the locking part 123b. It should be noted that the locking surface 14013 is arranged opposite at least part of the body of the first locking protrusion 1403, which can achieve the locking effect.

[0306] In some embodiments, the second shell has an unlocking direction, and the unlocking direction is the direction in which the supporting frame is mounted on the power tool and the second movable part rotates. When the second return part 1405 is a compression spring, the second return part 1405 is arranged on the side of the second movable part 1401 in the unlocking direction. When the second return part 1405 is a tension spring, the second return part 1405 is arranged on the side of the second movable part 1401 opposite to the unlocking direction.

[0307] As shown in FIG. 1-3 to FIG. 1-7, the first shell 10 includes a first shell side shell 10a extending in an axial direction, and a first reinforcing shell 10d connected to one end of the first shell side shell 10a towards the support frame 2a, the first reinforcing shell 10d defining a first connecting cavity 117, and the second movable piece 1401 is at least partially movably connected in the first connecting cavity 117, and the second reset piece 1405 is arranged between the first connecting cavity 117 and the second movable piece 1401.

[0308] In some embodiments, as shown in FIG. 1-4, the second movable piece 1401 is provided with a second clamping protrusion 14012 clamped in the first connecting cavity 117.

[0309] As shown in FIG. 1-4 to FIG. 1-7, the first reinforcing shell 10d further defines a second accommodating cavity 124 for the rotation of the second movable piece 1401, the second movable piece 1401 includes a second movable piece body 1401a and a second clamping protrusion 14012 connected to the second movable piece body 1401a, the second clamping protrusion 14012 is movably connected in the first connecting cavity 117, and the second movable piece body 1401a is rotationally connected in the second accommodating cavity 124, and a locking surface is defined by the second movable piece body.

[0310] In some embodiments, as shown in FIG. 1-5, FIG. 1-6 and FIG. 1-21, the second movable piece 1401 is provided with a first through hole 14014, when the support frame 2a is installed and connected to the electric tool body 1a, the support frame 2a abuts against the edge of the first through hole 14014 and passes through the first through hole 14014, and the edge of the first through hole 14014 clamps the support frame 2a under the action of the second reset piece 1405, and the support frame 2a is connected to the first shell 10 through the second movable piece 1401.

[0311] In the above-mentioned embodiments, when the support frame 2a is installed and connected to the electric tool body 1a, the support frame 2a is connected to the first shell 10 through the second movable piece 1401, so that the support frame 2a is arranged to move synchronously with the first shell 10.

[0312] Specifically, the support frame 2a is provided with a clamping hook 202a at one end thereof facing the first housing 10, the first through hole 14014 is provided with a first abutting surface, which can be a bevel or an arc surface or a surface of other shapes, and the top end of the clamping hook 202a is provided with a second guide surface 2022a corresponding to the edge of the first through hole 14014, which can be a bevel or an arc surface. The clamping hook 202a is further provided with a clamping groove 2021a. When the support frame is installed on the first housing, the second guide surface of the clamping hook 202a abuts against the first abutting surface of the second movable member to rotate the second movable member 1401 to the seventh specified position. Then, the support frame 2a continues to move in the same direction, the second guide surface 2022a of the clamping hook 202a is separated from the first abutting surface 14018 of the first through hole 14014, the second movable member 1401 rotates in the opposite direction and finally reaches the fifth specified position, and the first abutting surface 14018 is clamped into the clamping groove 2021a. In addition, the locking groove 14016 is aligned with the first locking convex 1403, and the movement of the second housing 12 relative to the first housing 10 is unlocked. In some embodiments, the first through hole and the first opening are oriented in the same direction. In some embodiments, the second movable member is annular, and the first through hole 14014 is provided for the output end of the driving mechanism 11. In some embodiments, the moving direction of the support frame 2a abutting against the second movable member 1401 is perpendicular to the rotating direction of the second movable member 1401.

[0313] As shown in FIG. 1-1, the first housing 10 is provided with a first opening 1000, and one end surface of the first opening 1000 is provided with a first clamping hole 1006 for installing the support frame 2a.

[0314] In some embodiments, the first position sensor is used to detect whether the second housing moves to the first specified position relative to the first housing and whether the second movable member reaches the fifth specified position. When the support frame is installed on the electric tool body 1a, the second movable member is abutted by the support frame to move to the fifth specified position, and the movement of the second housing relative to the first housing is unlocked. When the second housing moves to the first specified position relative to the first housing, the first position sensor detects a signal, and the control board interrupts the rotation transmission of the driving mechanism to the tool bit according to the signal. When the support frame is detached from the electric tool body 1a, the second movable member moves to the sixth specified position, the movement of the second housing relative to the first housing is locked, the second movable member is misaligned with the first position sensor, and the electric tool is closed in the maximum stroke protection mode.

[0315] In the above embodiment, when the support frame 2a is mounted on the power tool body 1a, the support frame abuts against the second movable piece to move the second movable piece to compress or stretch the second reset piece and move to the fifth specified position so that the locking groove 14016 is aligned with the first locking convex 1403, unlocking the movement of the second shell 12 relative to the first shell 10. When the second shell 12 moves to the first specified position relative to the first shell 10, the first position sensor 112 detects a signal, and the control mainboard 111 interrupts the rotation transmission of the driving mechanism 11 according to the signal; when the support frame 2a is detached from the power tool body 1a, the second movable piece 1401 rotates to the sixth specified position under the action of the second reset piece 1405, the locking groove 14016 is misaligned with the first locking convex 1403, and the locking surface 14013 of the second movable piece 1401 is opposite to the first locking convex 1403, locking the movement of the second shell 12 relative to the first shell 10, while the second movable piece 1401 is misaligned with the first position sensor 112 on the second shell 12, and the power tool is closed with the maximum stroke protection.

[0316] In some embodiments, the second movable piece 1401 comprises a first sensing part 14015, and a third magnet 123 is arranged on the first sensing part 14015 corresponding to the first position sensor. It should be noted that the signal detected by the first position sensor 112 of the present application refers to the signal indicating whether the second shell 12 moves to the first specified position relative to the first shell 10 and whether the second movable piece 1401 reaches the fifth specified position.

[0317] In some embodiments, the power tool body 1a comprises a depth sensing assembly, the depth sensing assembly comprising a depth sensor for detecting the real-time position of the second shell relative to the first shell, and the depth sensor is electrically connected to the control mainboard. As shown in FIGS. 1-3 to 1-5 and 1-10, a mounting bracket is connected below the second shell, and the depth sensing assembly is at least partially connected to the mounting bracket; the depth sensing assembly comprises a first gear, a depth sensor, and a rack; the rack is connected to the first shell; the first gear is rotatably connected to the mounting bracket; the depth sensor is connected to the mounting bracket; the first gear and the rack are engaged, and when the rack moves relative to the first gear, the first gear rotates, and the depth sensor detects the real-time position of the second shell relative to the first shell.

[0318] In some embodiments, as shown in FIG. 1-4, the depth sensing assembly 16 further comprises a first circuit board 1604, and the depth sensor 1602 is integrated on the first circuit board 1604, and the first circuit board 1604 is electrically connected to the control mainboard 111. When the first gear 1601 rotates, the signal detected by the depth sensor 1602 changes. The depth sensor 1602 is arranged opposite to the first gear 1601.

[0319] Specifically, the mounting bracket is provided with a bearing, and the first gear is rotatably connected to the mounting bracket through the bearing. A magnet is connected to a side of the first gear facing the depth sensor. The depth sensor can be a magnetic encoding sensor. The magnet rotates with the first gear, and the magnetic field changes. The magnetic encoding sensor detects the signal. In some embodiments, the first position sensor 112 is electrically connected to the first circuit board 1604, and the first position sensor 112 is electrically connected to the control mainboard 111 through the first circuit board 1604. In some embodiments, the first position sensor 112 is connected to the second housing body 12a and is arranged on the front side of the depth sensor 1602. In some embodiments, the wires of the first circuit board 1604 pass through the first through hole 12071, the first wire channel 1207, and the control mainboard 111 in sequence, or the wires of the first circuit board 1604 pass through the first through hole 12071, the first wire channel 1207, the eighth opening, and the control mainboard 111 in sequence.

[0320] In some embodiments, the second housing extends in the axial direction, and the control mainboard is connected to the rear side of the second housing. The first housing includes a first housing side shell (also referred to as a first housing body) and a hand-held shell. The first housing side shell extends in the axial direction, and the hand-held shell is arranged at an angle to the first housing side shell. The overall shape of the first housing is in the shape of a pistol. The second housing and the hand-held shell define a first avoiding space therebetween. The depth sensor is mounted on the side of the second housing facing the hand-held shell and is located in the first avoiding space. When the depth sensor moves with the second housing relative to the first housing, the depth sensor avoids the inner wall of the hand-held shell.

[0321] In some embodiments, the wires connected to the first position sensor pass through the first through hole 12071, the first wire channel 1207, and the control mainboard 111 in sequence. In some embodiments, the wires connected to the first position sensor pass through the first through hole 12071, the first wire channel 1207, the eighth opening, and the control mainboard 111 in sequence. In some embodiments, as shown in FIGS. 1-3, 1-4, and 1-9, the power tool body 1a further includes a display assembly. The display assembly includes a display screen for displaying the real-time relative distance of the second housing moving relative to the first housing. The control mainboard is electrically connected to the display screen. The display screen is mounted on the end of the second housing provided with the fourth opening.

[0322] In some embodiments, the display assembly further comprises a zeroing button or a zeroing touch point provided on the display screen, the zeroing button is electrically connected with the control mainboard, when the user presses the zeroing button or clicks the zeroing touch point, the control mainboard receives a zeroing signal and controls the real-time relative distance value displayed on the display screen to be zero. In some embodiments, when the user presses the zeroing button or clicks the zeroing touch point, the control mainboard receives a zeroing signal and sets the current position detected by the depth sensor as the zero point of the real-time relative distance, when the depth sensor detects the real-time position of the second shell relative to the first shell, the control mainboard calculates the real-time relative distance according to the real-time position and the zero point position and controls the display screen to display the real-time relative distance. In some embodiments, the power tool body 1a further comprises a depth adjustment assembly, the depth adjustment assembly comprises a depth adjustment knob provided on the rear side of the second shell and a depth adjustment sensor, the depth adjustment knob is used to adjust the target distance of the movement of the second shell relative to the first shell; the depth adjustment sensor is electrically connected with the control mainboard; the depth adjustment knob rotates, the depth adjustment sensor detects the corresponding signal; after the control mainboard receives the signal sent by the depth adjustment sensor, the output end of the driving mechanism stops rotating when the real-time relative distance of the movement of the second shell relative to the first shell reaches the target distance. In some embodiments, when the control mainboard 111 receives the signal sent by the depth adjustment assembly 19, the control mainboard 111 calculates the real-time relative distance of the movement of the second shell relative to the first shell according to the real-time position signal sent by the depth sensor 1602 and the reference position (zero point position), and compares the real-time relative distance with the target distance, if the real-time relative distance is within the error range allowed by the target distance, the control motor 1103 stops rotating. In some embodiments, the error range can be 0, that is, the motor 1103 will stop rotating only after the real-time relative distance reaches the target distance. In some embodiments, the error value can be between 0 and 0.5 millimeters or even more.

[0323] The depth adjustment member 1901 is a knob structure, which is a ring structure. The depth adjustment member 1901 is formed with a display opening 1904. A user can observe the content of the display screen 1801 through the display opening 1904. A transparent glass is usually installed at the display opening to protect the display screen. In some embodiments, a first clamping groove 1215 is arranged on the inner wall of the rear side of the second shell body 12a. The display screen 1801 is installed in the first clamping groove 1215. The depth adjustment member 1901 is rotatably sleeved on the rear side of the second shell body 12a. The depth adjustment member 1901 includes a manual adjustment part 19011 and a trigger part 19012. The manual adjustment part 19011 is connected with the trigger part 19012. The manual adjustment part 19011 is provided with stripes to increase the friction. A user can rotate the depth adjustment member 1901 by hand. The trigger part 19012 is provided with a third clamping tooth. The depth adjustment assembly 19 further includes a second gear 1903. When the user rotates the manual adjustment part 19011 by hand, the trigger part 19012 rotates with the manual adjustment part 19011. The third clamping tooth meshes with the second gear 1903 and drives the second gear 1903 to rotate. When the second gear 1903 rotates, the depth adjustment sensor 1902 detects a corresponding signal. The control mainboard 111 calculates target distance information according to the signal or the depth adjustment sensor 1902 can calculate the target distance and send the information to the control mainboard 111. For example, a mechanical contact is arranged on the second gear. The on-off of the mechanical contact is realized by driving the mechanical contact to contact a conductive / insulating area by the second gear to generate a periodic electric pulse signal. In some embodiments, the space defined by the rear side of the second shell body 12a is substantially circular in cross section. The control mainboard 111 is substantially circular in shape. The control mainboard 111 is connected to the inner wall of the rear side of the second shell body 12a. The display screen 1801 is substantially circular in shape. The display screen 1801 is connected to the inner wall of the rear side of the second shell body 12 and located at the rear side of the control mainboard 111. In some embodiments, the rear side of the second shell body 12a is defined with a slot 1213. The trigger part 19012 of the depth adjustment member 1901 is embedded in the slot 1213 and connected with the second gear 1903. In some embodiments, in some implementation scenarios, the internal space layout of the power tool faces challenges, which causes the available area of the control mainboard 111 to be strictly limited. In order to effectively solve this problem, as shown in FIGS. 1-7, the control mainboard 111 includes a first sub-control board 111a and a second sub-control board 111b. The second sub-control board 111b is connected to the rear side of the first sub-control board 111a in the axial direction. The first sub-control board 111a and the second sub-control board 111b are both connected in the second shell body 12a. Of course, in other embodiments, the control mainboard can have only one component integrated board. The component integrated board is integrated with components on both front and rear surfaces. In some embodiments, the control mainboard is not divided into two boards, but only one control board.

[0324] In the embodiment, as shown in FIGS. 1-3, the electric tool body 1a further comprises a forward-reverse rotation operating tab, the first shell 10 is provided with an opening for mounting the forward-reverse rotation operating tab, the forward-reverse rotation operating tab 122 penetrates the first shell 10 and is at least partially located in the first shell 10, and the depth sensor 1602 is arranged away from the forward-reverse rotation operating tab 122. The forward-reverse rotation operating tab 122 is used to control the motor 1103 to rotate forward or reverse. It should be noted that the motor 1103 starts the maximum stroke protection when rotating forward, and the motor 1103 stops the maximum stroke protection when rotating reverse.

[0325] In some embodiments, as shown in FIGS. 1-3 and 1-7, the second shell 12 is extended downward to form a first wire channel 1207, the first wire channel 1207 has a first opening 12071, the depth sensor 1602 is arranged at the front side of the first wire channel 1207, and the wires connected to the depth sensor 1602 pass through the first opening 12071 and the first wire channel 1207 in sequence to be connected to the control mainboard 111.

[0326] In some embodiments, the control mainboard 111 is extended downward to be partially located in the first wire channel 1207, the second shell 12 is provided with a seventh opening 1209 and an eighth opening 1210, the wires connected to the motor 1103 pass through the seventh opening 1209, the first opening 12071 and the first wire channel 1207 in sequence to be connected to the control mainboard 111, or the wires connected to the motor 1103 pass through the seventh opening 1209, the first opening 12071, the first wire channel 1207 and the eighth opening 1210 in sequence to be connected to the control mainboard 111. The electric tool further comprises a battery 120, the wires connected to the battery 120 pass through the first opening 12071 and the first wire channel 1207 in sequence to be connected to the control mainboard 111, or the electric tool further comprises a battery 120, the wires connected to the battery 120 pass through the first opening 12071, the first wire channel 1207 and the eighth opening 1210 in sequence to be connected to the control mainboard 111. In some embodiments, as shown in FIG. 1-20, the battery 120 is arranged in the handheld shell 10b. In some embodiments, the first shell 10 further comprises a base 10c arranged at the lower side of the handheld shell 10b, the battery 120 is arranged in the base 10c, and the wires of the battery 120 pass through the space in the handheld shell 10b and then pass through the first opening 12071, the first wire channel 1207 and the eighth opening 1210 in sequence to be connected to the control mainboard 111.

[0327] In some embodiments, as shown in FIG. 1-9, the control mainboard 111 is extended downward, the second shell body 12a is provided with a ninth opening 1214, the ninth opening 1214 is located at the lower side of the fourth opening 1201, and the reset button 1802 is electrically connected to the control mainboard 111 through the ninth opening 1214.

[0328] In some embodiments, as shown in FIGS. 1-3 and 1-7, 1-8, the driving mechanism 11 further comprises a heat dissipation fan 1105 and a motor 1103, the heat dissipation fan 1105 is connected to the rear side of the axial direction of the motor 1103, and the heat dissipation fan 1105 is used to dissipate heat for the motor 1103; the first shell is provided with a first air inlet and a first air outlet; the second shell is correspondingly provided with a second air inlet and a second air outlet. In the above embodiment, the second air inlet is not necessarily arranged on the reinforcing portion, but can also be arranged on the second shell body. In some embodiments, the first shell 10 and the second shell 12 are provided with a plurality of air inlets and air outlets.

[0329] Please refer to the schematic diagrams of the support frame embodiments one to eight, as shown in FIGS. 1-21 to 1-28.

[0330] The power tool 1 further comprises a support frame 2a, the support frame 2a is formed with a through channel 2222 and a support surface 211, when the support frame 2a is connected to the main body 1a of the power tool 1 and the driving mechanism 11 is completely retracted into the first shell 10, the through channel 22 and the support surface 211 are configured to be penetrated by the tool bit 3a.

[0331] In some embodiments, the support frame 2a comprises a splicing portion 20 (also referred to as a connecting portion) and a support portion 21. The splicing portion 20 comprises a first connecting structure 202 and a force receiving support portion 21 at one end thereof towards the main body 1a of the power tool 1. The support frame 2a is connected to the first housing 10 through the first connecting structure 202, and the first housing 10 is abutted against the support frame 2a through the force receiving support portion 21. The support portion 21 is connected to the other end of the splicing portion 20, and a support surface 211 is formed on the support portion 21. The support surface 211 is configured to abut against the machining surface 5a. A through channel 22 penetrates through the splicing portion 20 and the support portion 21. The first connecting structure 202 comprises a clamping hook 202a, and a second inclined surface or arc surface is provided at the top end edge of the clamping hook 202a. The clamping hook 202a is formed with a clamping groove 2021a. The splicing portion 20 is integrally connected to the support portion 21. The support portion 21 is a support leg 21a, and the support leg 21a is integrally connected to the splicing portion 20 and at least one support leg 21a is provided. The support portion 21 comprises a connecting surface 212, and the connecting surface 212 is perimetrically connected to the end of the splicing portion 20 away from the first connecting structure 202. The connecting surface 212 is perimetrically formed with the through channel 22. The support surface 211 is configured to be perpendicular to the axial direction of the tool bit 3a or to be arranged at an angle. The support surface 211 of the support portion 21 is provided with a cleaning hole 213 penetrating through the support surface 211. The connecting surface 212 is provided with an observation hole 214. The support portion 21 is telescopically connected to the splicing portion 20 and the angle is variable. A telescopic space 23 is formed between the support portion 21 and the splicing portion 20, and the support portion 21 is movable in the telescopic space 23. The splicing portion 20 is provided with a sliding hole 203. The support frame 2a further comprises a fixing member 24. The support portion 21 is provided with a threaded hole, and the fixing member 24 is threadedly connected to the threaded hole through the sliding hole 203 to telescopically connect the support portion 21 to the splicing portion 20. In some embodiments, the splicing portion 20 is designed as a ring structure, and the splicing portion 20 comprises a force receiving support portion 201. As shown in FIGS. 1-21, the force receiving support portion 201 extends radially to form force receiving protrusions (the force receiving protrusions are equidistantly spaced apart), or as shown in FIGS. 1-22, the force receiving support portion 201 is a force receiving surface structure. When the support frame 2a is subjected to a force and is erected on a machining surface, the equidistantly spaced apart force receiving support portions 201 can uniformly disperse the force applied to the force receiving support portions 201 through the fourth surface 1009 of the first reinforcing housing 10d due to the hand-held force, thereby improving stability and balance.

[0332] In some embodiments, the connecting surface 212 is provided with an opening and / or an openable and closable opening or is a continuously closed surface. In the present embodiment, the openable and closable opening refers to an opening that can be opened and closed.

[0333] The clamping connection in the present embodiment is only used to represent positioning and fixing connection.

[0334] In some embodiments, as shown in FIG. 1-19 and FIG. 1-20, the first shell 10 is closed at one end away from the first opening 1000; the driving mechanism 11 comprises a motor 1103, which is accommodated in the first shell 10.

[0335] In some embodiments, a scale (not shown in the drawings) is arranged on the first shell 10.

[0336] Please refer to the power tools in Embodiment 1 to Embodiment 6, as shown in FIG. 1-1 to FIG. 5-12.

[0337] The fourth aspect 1003 of the present application provides a control method, which is applied to the power tool described above and comprises a display screen 1801. The control method comprises: receiving a zeroing signal, which is used to display a real-time relative distance value of 0 on the display screen 1801; and in response to the zeroing signal, controlling the display screen 1801 to display the real-time relative distance value of 0.

[0338] In some embodiments, the power tool further comprises a depth sensor 1602, which is used to detect a real-time position of the second shell 12 relative to the first shell 10; and the control method further comprises: receiving the zeroing signal, and in response to the zeroing signal and setting a current position detected by the depth sensor 1602 as a 0-point position of the real-time relative distance; receiving a real-time position signal sent by the depth sensor 1602, calculating a real-time relative distance according to the real-time position and the 0-point position; and controlling the display screen 1801 to display the real-time relative distance.

[0339] In some embodiments, the depth sensor 1602 is used to detect whether the second shell 12 reaches a first specified position relative to the first shell 10; and the control method further comprises: when the second shell 12 moves to the first specified position relative to the first shell 10, controlling the mainboard 111 to acquire a position signal sent by the depth sensor 1602 and controlling the motor 1103 to stop rotating.

[0340] In some embodiments, the power tool further comprises a first position sensor 112, which is used to detect whether the second shell 12 reaches a first specified position relative to the first shell 10; and the control method further comprises: when the second shell 12 moves to the first specified position relative to the first shell 10, controlling the mainboard 111 to acquire a position signal sent by the first position sensor 112 and controlling the motor 1103 to stop rotating.

[0341] In some embodiments, the power tool further comprises a first position sensor 112 configured to detect whether the second housing 12 reaches a first specified position relative to the first housing 10 and whether the second movable member 1401 reaches a fifth specified position; and the control method further comprises: when the second housing 12 moves to the first specified position relative to the first housing 10 and the second movable member 1401 reaches the fifth specified position, the control board 111 acquires the position signal sent by the first position sensor 112 and controls the motor 1103 to stop rotating.

[0342] In the above embodiments, when it is detected that the motor output end rotates in the positive direction, and the depth sensor or the first position sensor detects that the second housing is located at the first specified position relative to the first housing and the second movable member is located at the fifth specified position, the control board controls the motor output end to stop rotating.

[0343] In some embodiments, the control method further comprises: receiving a depth adjustment signal, the depth adjustment signal being configured to adjust a target distance of the second housing 12 moving relative to the first housing 10; and in response to the depth adjustment signal, controlling the motor 1103 to drive the second housing 12 to move relative to the first housing 10 to the target distance, and then controlling the motor 1103 to stop rotating.

[0344] In some embodiments, the control method further comprises, before the step of controlling the motor 1103 to drive the second housing 12 to move relative to the first housing 10 to the target distance and then controlling the motor 1103 to stop rotating in response to the depth adjustment signal, the following steps: receiving a reset signal, in response to the reset signal and setting the current position of the second housing relative to the first housing detected by the depth sensor 1602 as the 0 point position of the real-time relative distance, receiving the real-time position sent by the depth sensor 1602, calculating the real-time relative distance according to the real-time position and the 0 point position, and when the real-time relative distance reaches a target distance error range, controlling the motor 1103 to stop rotating and controlling the display screen 1801 to display the real-time relative distance.

[0345] In some embodiments, the error range is 0, i.e. the motor 1103 stops rotating only after the real-time relative distance reaches the target distance.

[0346] In some embodiments, the display screen 1801 further comprises a first range area provided with a scale for displaying the target distance; and the control method further comprises: when the depth adjustment signal operated in the first range area is detected, controlling the display screen 1801 to display the third position in the first color.

[0347] In some embodiments, the display 1801 further comprises a second range area; the control method further comprises: detecting a third operation, the third operation being used to close a function of adjusting a target distance of the second housing 12 moving relative to the first housing 10; controlling the second position of the display 1801 to be highlighted in a second color, the third position and the second position being at the same position or the second position and the third position being at different positions; the third operation being operated in the second range area.

[0348] In some embodiments, the control method further comprises: reading that the rotating speed of the motor 1103 is reduced, and controlling the current to be increased so that the rotating speed of the motor 1103 is increased.

[0349] In some embodiments, the control method comprises three function modes, the three function modes comprising: a screwdriver mode, a drilling mode, and a tapping mode; the control method further comprises: when detecting a gear adjusting operation, controlling the motor 1103 to be adjusted to a corresponding function mode.

[0350] In the above embodiments, the detection of the gear adjusting operation is determined by the second position sensor detecting the position of the first movable member, for example, the second position sensor detecting that the first movable member is located at the third position or away from the third position corresponding to the rotating speed or the torque of the adjusting motor.

[0351] In some embodiments, the power tool 1 further comprises a parameter adjusting knob, the parameter adjusting knob being used to adjust the torque of the output end of the motor 1103; the method comprises: detecting an operation of adjusting the torque, and adjusting the torque of the output end of the motor 1103.

[0352] In some embodiments, the power tool 1 further comprises a second position sensor 1304, the second position sensor 1304 being used to detect the position of the first movable member 11g; the control method comprises: detecting that the first movable member 11g moves to the first position, and controlling the display to display a first gear icon; detecting that the first movable member 11g moves to the second position, and controlling the display to display a second gear icon; detecting that the first movable member 11g moves to the third position, and controlling the display to display a third gear icon.

[0353] In some embodiments, before the step of receiving the depth adjusting signal, the method comprises: detecting an operation of closing a function of adjusting the torque, and in response to the operation of closing the function of adjusting the torque, closing a function of adjusting the torque of the output end of the motor 1103.

[0354] In some embodiments, before the step of detecting the operation of adjusting the torque, the method comprises: detecting an operation of closing a function of adjusting the depth, and in response to the operation of closing the function of adjusting the depth, closing a function of adjusting the target distance of the second housing 12 moving relative to the first housing 10.

[0355] In the above embodiment, since the depth adjustment member and the torque adjustment knob 126 for adjusting the target distance of the movement of the second housing 12 relative to the first housing 10 share one knob, when the target distance of the movement of the second housing 12 relative to the first housing 10 needs to be adjusted, the function of adjusting the torque of the output end of the adjusting motor 1103 needs to be closed, and when the function of adjusting the torque of the output end of the adjusting motor 1103 needs to be closed, the function of adjusting the target distance of the movement of the second housing 12 relative to the first housing 10 needs to be closed.

[0356] In the above embodiment, the operation of detecting the adjusting torque can be detected by the torque adjustment sensor, and when the torque adjustment coarse button is rotated, the torque adjustment sensor detects the corresponding torque signal, and the control board adjusts the output torque of the motor according to the signal.

[0357] In some embodiments, the function of adjusting the torque of the output end of the adjusting motor 1103 and the function of adjusting the torque of the output end of the adjusting motor 1103 can be operated on the display screen, and in some embodiments, the function of adjusting the target distance of the movement of the second housing 12 relative to the first housing 10 or the function of adjusting the torque of the output end of the adjusting motor 1103 can be closed by rotating the depth adjustment member or the torque adjustment knob 126 to the limit position.

[0358] The fifth aspect of the present application provides a use method of the handheld electric tool 1, which is applied to the electric tool 1 of the second aspect, and the electric tool further comprises a display screen 1801, a zero reset button 1802 and / or a zero reset touch point 18011, and the zero reset button 1802 and / or the zero reset touch point 18011 are used to make the display screen 1801 display the real-time relative distance value as 0; the use method comprises the following steps: holding the electric tool and placing the support frame 2a on the machining surface; pressing the zero reset button 1802 or touching the zero reset touch point 18011, so that the display screen 1801 displays the real-time relative distance value as 0; pressing the operation key to start the motor 1103; with the movement of the cutter head 3a, the real-time relative distance is displayed on the display screen 1801, and the operation key is released, and the motor 1103 stops rotating.

[0359] In the above embodiment, a method for using the drill or the tapping tool generally needs to determine whether the second movable part is located at the sixth specified position first. When the second movable part is not located at the sixth specified position, the force receiving part provided on the second movable part needs to be moved to the sixth specified position. Then, the support frame is installed on the electric tool main body 1a so that the support frame can be connected with the first shell of the electric tool. Then, the second movable part is moved again so that the second movable part moves to the fifth specified position. At this time, the movement of the second shell relative to the first shell is unlocked, and the movement of the support frame is locked and connected with the first shell. Then, the electric tool is abutted against the machining surface until the support frame is abutted against the machining surface. Then, it is confirmed whether the value displayed on the display screen is 0. If the value is not 0, the reset button needs to be pressed so that the value displayed on the display screen is 0. Then, it is confirmed whether the forward and reverse operation dial of the electric tool is located at the forward rotation position. If the forward and reverse operation dial is not located at the forward rotation position, the forward and reverse operation dial needs to be pressed so that the electric tool is in the forward rotation mode. Then, it is confirmed whether the electric tool is in the electric drill mode or the tapping tool mode (which can be confirmed by the position of the dial structure or the icon on the display screen). If the electric tool is not in one of the two modes, the dial structure needs to be dialled so that the electric tool is in one of the two modes. Then, it is confirmed whether the output torque gear of the motor is in the correct position (which can be confirmed by the torque value displayed on the display screen). After confirming the above, the trigger is pressed, and the electric tool starts working.

[0360] In the above embodiment, when the parameter adjustment knob does not have the function of adjusting the target distance of the second shell relative to the first shell, the electric tool is held and the support frame 2a is abutted against the machining surface. The reset button 1802 is pressed or the reset touch point 18011 is touched, so that the display screen 1801 displays the real-time relative distance value as 0. The operation key is pressed to start the motor 1103. With the movement of the drill bit 3a, the real-time relative distance displayed on the display screen 1801 is displayed. When the value displayed on the display screen reaches the expected value, the operation key is released, and the motor 1103 stops rotating. For example, when a 5 cm threaded hole is desired, the value displayed on the display screen is 5 cm or 50 mm, and the trigger operating member is released, and the motor 1103 stops rotating.

[0361] In some embodiments, when the depth sensor detects a signal that the second shell is located at the first specified position relative to the first shell, and the first position sensor does not detect a signal that the first movable part is located at the fifth specified position, the control mainboard controls the display screen to not display the depth information.

[0362] In some embodiments, the first shell 10 is provided with a scale. After the step of pressing the operation key to start the motor 1103, the method further includes: with the movement of the drill bit 3a, when the second shell 12 moves to the corresponding scale, the operation key is released, and the motor 1103 stops rotating.

[0363] In some embodiments, the power tool further comprises a depth adjustment member 1901 for adjusting a target distance of the second housing 12 moving relative to the first housing 10; the method of use comprises the following steps: adjusting the depth adjustment member 1901 to adjust the target distance of the second housing 12 moving relative to the first housing 10. Pressing the operation knob starts the motor 1103, the second housing 12 moves relative to the first housing 10 to the target distance, the motor 1103 stops rotating, and the display screen 1801 displays the real-time relative distance.

[0364] In summary, the home position sensor is used to detect the home position signal and send the home position signal to the control mainboard 111, and the control mainboard 111 controls the display screen 1801 to display the real-time relative distance as 0 according to the home position signal. The real-time relative distance represents that the moving distance of the second housing 12 relative to the first housing 10 at this time is 0, and the current position of the second housing 12 relative to the first housing 10 is the 0 point position. When the second housing 12 moves 5 cm relative to the first housing 10, the depth sensor 1602 detects the real-time position of the second housing 12 relative to the first housing 10 at this moment, and the real-time position and the 0 point position are calculated to obtain the real-time relative distance of the second housing 12 moving relative to the first housing 10 as 5 cm, and control the display screen 1801 to display the real-time relative distance as 5 cm. If the unit of the display screen 1801 at this moment is mm, the displayed value is 50, and if the unit is m, the displayed value is 0.05. By rotating the parameter adjustment knob 136, such as the parameter adjustment knob 136 for adjusting the target distance of the second housing 12 moving relative to the first housing 10, such as needing to drill or tap a 5 cm hole, rotating the parameter adjustment knob 136 to the place where the scale is 5 cm. When the user starts the work, the bit 3a will stop feeding forward when it feeds 5 cm, and the display screen 1801 displays the value of 5. When the parameter adjustment knob 136 is used to adjust the output torque of the motor 1103, such as in the drill mode, the output torque of the motor 1103 needs to be adjusted to the seventh gear, and the scale is rotated to the third gear. At this moment, the display screen 1801 displays the torque gear position in this mode as the seventh gear. Or the display screen 1801 has no scale, but directly displays the torque size in numbers, such as by rotating the parameter adjustment knob 136, the display screen 1801 displays the corresponding numbers.

[0365] In summary, the embodiment mentioned at least five sensors, the first position sensor 112 is used to detect whether the second shell 12 is located in the first specified position and the interval of the second specified position (including the first specified position and the second specified position) and whether the second movable part 40 is located in the fifth specified position when the second shell 12 moves forward relative to the first shell 10 (meaning that at this time it is in the positive rotation mode). When it is detected that the second shell 12 is located in the interval of the first specified position and the second specified position relative to the first shell 10 and the second movable part 40 is located in the fifth specified position, the control mainboard 111 controls the motor 1103 output end to stop driving. The second position sensor 1304 is at least used to detect whether the first movable part 11g is located in the third position. When it is detected that the first movable part 11g is located in the third position, the control mainboard 111 controls the rotation speed of the motor 1103 to change so that the motor 1103 switches mode, such as switching to the third gear. The depth sensor 1602 is used to detect the real-time position of the second shell 12 relative to the first shell 10. The zero return sensor is used to detect the zero return signal. The positive and negative rotation sensor is used to detect whether the motor 1103 output end is positive rotation or negative rotation. In addition, there may be a depth adjustment sensor 1602 for adjusting the target distance of the movement of the second shell 12 relative to the first shell 10. There may also be a torque adjustment sensor 127 for adjusting the output torque of the motor 1103. The sensor may be the same as the depth adjustment sensor 1602.

[0366] Please refer to the electric tool of embodiment five, please refer to figures 3-1 to 3-8.

[0367] BRIEF DESCRIPTION OF DRAWINGS: Fig. 3-1 is a partial structure schematic diagram of the electric tool provided by the present application; Fig. 3-2 is an exploded schematic diagram of the partial structure of the electric tool provided by Fig. 3-1; Fig. 3-3 is a sectional view of the partial structure of the electric tool provided by Fig. 3-2; Fig. 3-4 is a sectional view of the partial structure of the electric tool provided by Fig. 3-1 for locking the second shell; Fig. 3-5 is a sectional view of the partial structure of the electric tool provided by Fig. 3-1 for locking the support frame; Fig. 3-6 is a partial structure schematic diagram of the electric tool provided by Fig. 3-1; Fig. 3-7 is an exploded schematic diagram of the support frame, the first movable part and the auxiliary shell of the electric tool provided by Fig. 3-1; Fig. 3-8 is a structure schematic diagram of the first movable part of the electric tool provided by Fig. 3-1;

[0368] The application provides a handheld electric tool 1, which is used for at least one of screw driving, drilling and tapping, and has an axial direction, a radial direction and a circumferential direction. The electric tool 1 comprises a first housing 10, a second housing 12 which is at least partially nested in the first housing 10 and is in sliding connection with the first housing 10 and can be extended and retracted along the axial direction relative to the first housing 10, a driving mechanism which is at least partially accommodated in the second housing 12 and has an output end for connecting with a tool and driving the tool to rotate, and the driving mechanism and the second housing 12 are configured to be synchronously extended and retracted along the axial direction relative to the first housing 10 as a whole, and a second movable part 40 which is in rotary connection with the first housing 10 and is used for locking the movement of the second housing 12 along the axial direction relative to the first housing 10. According to the application, the second housing 12 is arranged to be extended and retracted along the axial direction relative to the first housing 10, and the second movable part 40 is arranged in rotary connection with the first housing 10, so that the movement of the second housing 12 relative to the first housing 10 can be locked when the electric tool 1 is in a screw driving or drilling mode, and the electric tool 1 can be flexibly used.

[0369] In the above embodiment, the tool generally comprises a tool head, and the tool can also be referred to as a tool head 3a (as shown in FIGS. 1-14). As shown in FIGS. 3-6, 321 is the output end of the speed reducer.

[0370] As shown in FIGS. 3-3 to 3-8, in the embodiment, the second movable part 40 is in rotary connection with the front side of the first housing 10, the second movable part 40 comprises a first protruding part 41, the second housing 20 comprises a first locking protrusion 221 which is arranged corresponding to the first protruding part 41, at least part of the first protruding part 41 is arranged opposite to at least part of the first locking protrusion 221 in the axial direction when the second housing 20 is in the locked state, the first protruding part 41 is located at the rear side of the first locking protrusion 221, and the movement of the second housing 20 relative to the first housing 10 towards the rear side is locked, wherein the front-rear direction is parallel to the axial direction. As shown in FIGS. 3-2 and 4-1, at this time, the second movable part is located at the position in the locked state, at this time, the second housing is retracted into the first housing, and the electric tool can be used for an electric screwdriver. As shown in FIGS. 4-2 and 3-2, at this time, the second movable part is located at the unlocked state, at this time, the movement of the second housing relative to the first housing can be unlocked, and the electric tool can be used for an electric drill or a tapping tool.

[0371] In some embodiments, as shown in FIGS. 3-7 to 3-8, the second movable part body 42 is in the form of a ring-shaped sleeve structure, one side of the second movable part 40 which is radially inward is an inner surface of the second movable part 40, and the other side of the second movable part 40 which is radially outward is an outer surface of the second movable part 40, and the auxiliary housing 22f and the support frame 2a which are inserted into the second movable part 40 are also in the form of a ring-shaped sleeve structure.

[0372] In some embodiments, the first protrusion 41 can be arranged on the outer surface of the second movable member body 42, or can be arranged on the inner surface of the second movable member body 42.

[0373] It should be noted that the relative arrangement of at least part of the first protrusion 41 and at least part of the first locking protrusion 221 can lock the movement of the second housing 12 relative to the first housing 10. In one case, part of the first protrusion 41 is arranged opposite part of the first locking protrusion 221. In another case, the entire first protrusion 41 is arranged opposite part of the first locking protrusion 221. In another case, part of the first locking protrusion 221 is arranged opposite the entire first protrusion 41. In another case, the entire first protrusion 41 is arranged opposite the entire first locking protrusion 221.

[0374] In the present embodiment, when the second movable member 40 is rotated to the sixth specified position, at least part of the first protrusion 41 is arranged opposite at least part of the first locking protrusion 221. In some embodiments, the second movable member body 42 is sleeved on the second housing 12, and the first protrusion 41 and the first locking protrusion 221 respectively extend along the circumferential direction of the inner surface of the second movable member body 42 and the circumferential direction of the outer surface of the second housing 12 to form long arc-shaped protrusions. When the first protrusion 41 and the first locking protrusion 221 abut, the long arc-shaped protrusions can withstand a larger force and are not easy to be damaged.

[0375] In some embodiments, the connection part between the second housing 12 and the second movable member body 42 is a ring-shaped sleeve structure, and the ring-shaped sleeve structure is a hollow ring structure.

[0376] In some embodiments, the first protrusion 41 is provided with a fourth guide surface 411 on one side in the axial direction, and the first locking protrusion 221 is provided with a third guide surface 2212 corresponding to the fourth guide surface 411; when the second movable member 40 is rotated in the direction of locking the first locking protrusion 221, at least part of the fourth guide surface 411 can abut against at least part of the third guide surface 2212. By arranging the fourth guide surface 411 and the third guide surface 2212, the first protrusion 41 can be relatively easily rotated to be arranged opposite the first locking protrusion 221 while allowing the first protrusion 41 to be interference-fitted with the first locking protrusion 221.

[0377] In some embodiments, the fourth guide surface 411 and the third guide surface 2212 are inclined in substantially the same direction. In the above embodiment, the direction in which the first locking protrusion 221 is locked is parallel to the circumferential direction of the second movable member body 42. It should be noted that at least a portion of the fourth guide surface 411 is configured to be disposed opposite at least a portion of the third guide surface 2212, which means that the fourth guide surface 411 can be disposed opposite the third guide surface 2212 in whole or in part, or the fourth guide surface 411 can be disposed opposite the third guide surface 2212 in part. For example, when the first protrusion 41 and the first locking protrusion 221 are relatively small in width, the fourth guide surface 411 can be disposed opposite the third guide surface 2212 in whole. In this embodiment, the first protrusion 41 and the first locking protrusion 221 are disposed opposite in part.

[0378] In the above embodiment, the fourth guide surface 411 and the third guide surface 2212 can be inclined surfaces or arc surfaces, and the fifth guide surface 451 and the sixth guide surface 711 described below can also be inclined surfaces or arc surfaces. In some embodiments, in order to improve the strength of the second housing 12, the second housing 12 includes a protruding boss 222, and the first locking protrusion 221 is disposed on the boss 222. The rear side of the boss 222 is formed with a first locking position 223, and the first protrusion 41 is located at the first locking position 223 when the second housing 12 is in the locked state.

[0379] In some embodiments, the first protrusion 41 is spaced apart in the circumferential direction by n, n being greater than or equal to 2, and the first locking protrusion 221 is correspondingly spaced apart in the circumferential direction by n. When the second housing 12 is in the unlocked state, the first protrusion 41 is configured to be disposed opposite the first locking protrusion 221 in the axial direction. By providing n, n being greater than or equal to 2, the first protrusion 41 can be uniformly stressed in the circumferential direction of the second movable member 40 and the second housing 12. Therefore, the first protrusion 41 and the first locking protrusion 221 are further made of a metal material, and the second movable member 40 is further made of a metal material as a whole.

[0380] In some embodiments, a first unlocking channel is formed between adjacent two first protrusions 41, and a second unlocking channel is formed between adjacent two second locking protrusions 71. When the second housing 12 is in the unlocked state, the first protrusion 41 and the first locking protrusion 221 are disposed opposite in the axial direction, the first protrusion 41 and the second unlocking channel are disposed opposite in the axial direction, the first locking protrusion 221 and the first unlocking channel are disposed opposite in the axial direction, and the second housing 12 can move relative to the first housing 10.

[0381] As shown in FIGS. 3-6 to 3-8, the first protrusion 41 has a sixth surface 412 in the axial direction, the first locking protrusion 221 has a fifth surface 2211 in the axial direction, and when the second housing 12 is in the locked state, at least a portion of the sixth surface 412 is arranged opposite at least a portion of the fifth surface 2211 and the sixth surface 412 is arranged in interference fit with the fifth surface 2211; secondly, the sixth surface 412 and the fifth surface 2211 are arranged obliquely to the circumferential direction and the sixth surface 412 and the fifth surface 2211 are arranged in the same oblique direction. By arranging the sixth surface 412 and the fifth surface 2211 obliquely to the circumferential direction of the second movable member body 42 and the second housing 12 respectively, the second movable member 40 can be relatively easily rotated to lock the second housing 12 in the sixth specified position. When the second housing 12 is in the locked state, the first protrusion 41 is arranged opposite the fifth surface 2211 of the second housing 12 through the sixth surface 412, so that the movement of the second housing 12 is locked.

[0382] In some embodiments, the second movable member 40 includes a force receiving member 43 protruding from the outer surface of the second movable member body 42, and the first housing 10 is correspondingly provided with a first gap 111f for exposing the force receiving member 43, the first gap 111f is arranged extending in the circumferential direction and the force receiving member 43 is movable in the first gap 111f. A user can rotate the second movable member 40 by rotating the force receiving member 43, so that the movement of the second housing 12 relative to the first housing 10 can be unlocked or locked. On the other hand, the arrangement of the first gap 111f can limit the rotation of the force receiving member 43.

[0383] In some embodiments, as shown in FIG. 3-8, the force receiving member 43 further includes a first limiting portion 431 and a force receiving portion 432 connected to the first limiting portion 431, the first gap 111f limits the first limiting portion 431, and the force receiving portion 432 is used to receive the pushing force of a user. The arc angles of the first gap 111f, the first protrusion 41 and the first locking protrusion 221 are configured to be consistent.

[0384] In some embodiments, the second movable member 40 includes a second movable member body 42, and the first limiting portion 431 protrudes from the second movable member body 42.

[0385] In some embodiments, the second movable member 40 includes a second movable member body 42, and the force receiving member 43 is formed by protruding from the outer surface of the second movable member body 42. The first housing 10 defines a receiving cavity for accommodating the second movable member body 42, and the second movable member body 42 is arranged in the receiving cavity to be hidden in the first housing 10, and the first gap 111f is in communication with the receiving cavity. The first housing 10 further defines a guide groove in communication with the receiving cavity, and the second movable member body 42 has a first guide protrusion 46 extending in the circumferential direction, and the first guide protrusion 46 is inserted into the guide groove.

[0386] In some embodiments, the second housing 12 comprises a second housing body 12a and an auxiliary housing 22f (may also be referred to as a connecting housing 12b) connected to the second housing body 12a, the second housing body 12a extends in the axial direction, the driving mechanism is at least partially accommodated in the second housing body 12a, the second housing body 12a is separately provided from the auxiliary housing 22f, the first locking protrusion 221 is formed on the outer surface of the auxiliary housing 22f; the second housing body 12a is provided with a second notch 211f, the auxiliary housing 22f is provided with an auxiliary protrusion 224 (may also be referred to as a connecting protrusion 1205) corresponding to the second notch 211f, and the auxiliary protrusion 224 is used to connect the auxiliary handle. The auxiliary protrusion 224 at least partially protrudes from the fifth opening 1005, and the auxiliary protrusion is provided with a connecting hole; the connecting hole is used to connect the auxiliary handle. In the above embodiment, by providing the auxiliary handle, when the user uses the electric tool for drilling and tapping, the auxiliary handle can assist in exerting force to make the tool bit feed towards the machining surface, or when the user uses the electric tool for tapping, the auxiliary handle can provide an initial feeding force to the tool bit.

[0387] In some embodiments, as shown in FIGS. 3-6, the auxiliary housing 22f and the second housing body 12a can also be integrally provided. In some embodiments, since the first locking protrusion 221 is the force receiving portion 432, it is preferred that the auxiliary housing 22f be made of a metal material, and the second housing 12 be made of a plastic material. Of course, the auxiliary housing 22f can also be made of other materials. The second movable part 40 is also made of a metal material, and of course can also be made of other materials. In some embodiments, the driving mechanism comprises a motor and a speed reducer 1102, the speed reducer 1102 is arranged on the side of the motor in the axial direction and deviates from the auxiliary housing 22f, and the auxiliary housing 22f and part of the speed reducer 1102 are connected by threads or glue. The second housing body 12a is connected with the motor and the rest of the speed reducer 1102 by interference fit, and the second housing body 12a is directly or indirectly connected with the auxiliary housing 22f, for example, the auxiliary housing 22f is connected with the speed reducer 1102 by threads, and the second housing body 12a is connected with the motor and the speed reducer 1102 by interference fit, so that the second housing body 12a and the auxiliary housing 22f are indirectly connected together through the speed reducer 1102. The connection between the two components in this embodiment generally refers to the movement relationship between the two components, for example, the synchronous movement of the two components can be considered as the direct or indirect connection of the two components.

[0388] In some embodiments, the auxiliary protrusion 224 is connected with the second housing body 12a by threads. Since the auxiliary protrusion 224 is the main force receiving portion 432, the auxiliary housing 22f is made of a metal material to improve the hardness. The auxiliary protrusion 224 can assist the user to exert force by connecting the auxiliary handle, and then provide the tool bit with the feeding force required when feeding. Further, the auxiliary protrusion 224 is provided with a mounting hole, and the auxiliary handle is inserted into the mounting hole.

[0389] In some embodiments, the second movable part 40 is further provided with a first detection position 44, and the second shell 12 is connected with a control mainboard and a first position sensor 112 electrically connected with the control mainboard. When the second shell 12 is in the unlocked state and moves to a first specified position relative to the first shell 10 in the axial direction, the first position sensor can detect a signal that the second movable part is located at a fifth specified position and the second shell is located at a first specified position through the first detection position. The control mainboard controls the driving mechanism to stop rotating according to the signal that the second movable part is located at the fifth specified position and the second shell is located at the first specified position. In the above-mentioned embodiments, the motor is controlled to stop rotating.

[0390] The electric tool 1 is provided with the first position sensor 112, so that when the second shell 12 moves to the first specified position in the axial direction, the output end of the driving mechanism stops rotating, preventing the cutter from continuing to rotate to feed and drive the second shell 12 to continue to move, so that the end of the second shell 12 collides with the first shell 10, thereby causing damage. The first detection position 44 can be provided with a magnet, and the first position sensor 112 is a Hall sensor, or the first detection position 44 is provided as a solid structure, and the first position sensor 112 is a light sensor, or the sensor can be an infrared sensor. In some embodiments, when the first detection position is provided with a magnet, and the first position sensor 112 is a Hall sensor, when the second movable part rotates to the fifth specified position, the first detection position is aligned with or close to the first position sensor, and the first position sensor detects a signal. When the second movable part rotates to the sixth specified position, the first detection position is misaligned with the first position sensor, and the first position sensor cannot detect a signal. The second shell 12 is in the unlocked state, which means that the first convex part 41 and the first lock convex part 221 are misaligned at this moment. In the above-mentioned embodiments, since the second shell 12 is movable relative to the first shell 10, the control mainboard and the first position sensor 112 are arranged in the second shell 12, which is convenient for wiring. If the control mainboard and the first position sensor 112 are arranged in the two shells respectively, the wires are easy to loosen with the movement of the second shell 12, and the wiring is not convenient.

[0391] In some embodiments, as shown in FIGS. 3-1 to 3-8, the power tool 1 further comprises a support frame 2a, the support frame 2a is formed with a through channel 22, the support frame 2a is selectively connected to one end of the first housing 10 to which the second movable member 40 is connected; the second movable member 40 comprises a second protrusion 45 protruding from the second movable member body 42; the support frame 2a comprises a second locking protrusion 71 corresponding to the second protrusion 45, when the support frame 2a is connected to the first housing 10 and the support frame 2a is in the locked state, at least part of the second locking protrusion 71 is arranged opposite at least part of the second protrusion 45 in the axial direction and the second protrusion 45 is located in front of the second locking protrusion 71, the movement of the support frame 2a relative to the first housing 10 towards the front is locked, and the first protrusion 41 and the first locking protrusion 221 are arranged in the axial direction. The movement of the second housing 12 relative to the first housing 10 towards the rear is unlocked; when the support frame 2a is in the unlocked state, the second protrusion 45 and the second locking protrusion 71 are arranged in the axial direction. At least part of the first protrusion 41 and at least part of the first locking protrusion 221 are arranged opposite to each other, and the movement of the second housing 12 relative to the first housing 10 towards the rear is locked; wherein the first protrusion 41 and the second protrusion 45 are arranged on the same side of the radial direction of the second movable member body 42.

[0392] In the above embodiment, when the user installs the support frame 2a on the first housing 10 and rotates the second movable member 40, so that the second protrusion 45 and the second locking protrusion 71 are arranged opposite in the axial direction, at this time, the movement of the support frame 2a relative to the first housing 10 in the axial direction is locked, and at this moment the first protrusion 41 and the first locking protrusion 221 are misaligned, the movement of the second housing 12 relative to the first housing 10 is unlocked, and the user can use the power tool 1 with the support frame 2a to start the tapping mode or the drilling mode; when the user rotates the second movable member 40 again, the second protrusion 45 and the second locking protrusion 71 are misaligned, the movement of the support frame 2a relative to the first housing 10 is unlocked, and the user can take down the support frame 2a, and at this time the first protrusion 41 and the first locking protrusion 221 are arranged opposite to each other, so that the movement of the second housing 12 is locked, and the user can screw the screw.

[0393] By providing the support frame 2a, the tool bit is less likely to deviate from the intended angle when the power tool 1 is used with the support frame 2a. In the above embodiment, the through channel 22 is configured to be passed through by the tool. It should be noted that the selective connection of the support frame 2a means that the support frame 2a is selectively installed on the first housing 10 according to the functional mode of the power tool 1, for example, when the power tool 1 is used for electric screwdriver or electric drill, the support frame 2a can not be connected to the first housing 10, and when the power tool 1 is used for tapping or electric drill, the support frame 2a can be connected to the first housing 10.

[0394] In the above embodiments, the second movable member 40 is rotationally connected with the first housing 10, and when the support frame 2a is connected to the second movable member 40 through the second locking convex 71 and the second convex 45, it can be understood that the support frame 2a is connected to the first housing 10 through the second movable member 40.

[0395] In some embodiments, the inner surface of the second movable member body 42 is convexly formed with the second convex 45 and the first convex 41, and the outer surface of the support frame 2a is provided with the second locking convex 71 corresponding to the second convex 45.

[0396] When the movement of the support frame 2a relative to the first housing 10 is locked, that is, the support frame 2a is connected to the first housing 10 through the second locking convex 71.

[0397] In some embodiments, the connection part of the support frame 2a and the first housing 10 is a ring-shaped sleeve structure. In some embodiments, the second convex 45 and the second locking convex 71 are long arc-shaped protrusions. Therefore, the length of the second convex 45 and the second locking convex 71 refers to the arc length of both.

[0398] It should be noted that the relative arrangement of at least part of the second convex 45 and at least part of the second locking convex 71 can lock the movement of the second housing 12 relative to the first housing 10. In one case, part of the second convex 45 is arranged opposite part of the second locking convex 71, in another case, the whole of the second convex 45 is arranged opposite part of the second locking convex 71, in another case, part of the second locking convex 71 is arranged opposite the whole of the second convex 45, and in another case, the whole of the second convex 45 is arranged opposite the whole of the second locking convex 71.

[0399] In some embodiments, the second convex 45 is provided with a fifth guide surface 451 on one side in the axial direction, and the second locking convex 71 is provided with a sixth guide surface 711 corresponding to the fifth guide surface 451; when the fourth guide surface 411 of the second movable member 40 rotates in the direction of locking the support frame 2a, at least part of the fourth guide surface 411 can be arranged opposite at least part of the third guide surface 2212. By providing the fifth guide surface 451 and the sixth guide surface 711, the second convex 45 can be relatively easily rotated to be arranged opposite the second locking convex 71 while allowing the second convex 45 and the second locking convex 71 to be interference fit.

[0400] In some embodiments, the first protrusions 41 are equidistantly spaced in the circumferential direction, and the first locking protrusions 221 are equidistantly spaced in the circumferential direction corresponding to the first protrusions 41. The second protrusions 45 are equidistantly spaced in the circumferential direction, and the second locking protrusions 71 are equidistantly spaced in the circumferential direction corresponding to the second protrusions 45. m = n ≥ 2. By providing two or more second protrusions 45 and second locking protrusions 71, the forces acting on the second protrusions 45 and the second locking protrusions 71 are more evenly distributed. In some embodiments, a third unlocking channel is formed between any two adjacent second protrusions 45, and a fourth unlocking channel is formed between any two adjacent second locking protrusions 71. When the first support frame 2a is in the unlocked state, the second protrusions 45 and the second locking protrusions 71 are misaligned, the second protrusions 45 and the fourth unlocking channel are oppositely arranged, and the second locking protrusions 71 and the fourth unlocking channel are oppositely arranged. The support frame 2a can be detached from the first housing 10.

[0401] In some embodiments, the arc angles of the first protrusions 41, the first locking protrusions 221, the second protrusions 45, and the second locking protrusions 71 are configured to be consistent. The second movable member 40 includes a second movable member body 42, which is a ring-shaped sleeve structure. The first protrusions 41 and the second protrusions 45 are formed on the inner surface of the second movable member body 42, and the first protrusions 41 and the second protrusions 45 are arranged in the axial direction. The first protrusions 41 are formed on the rear side of the second movable member body 42 in the axial direction.

[0402] In some embodiments, a first mounting position 80 is formed between the second movable member 40 and the second housing 12, and a second mounting position 90 is formed between the second movable member body 42 and the first housing 10. The end of the support frame 2a facing the first housing 10 includes a first plug-in portion 72 and a second plug-in portion 73. A first accommodating position 76 is formed between the first plug-in portion 72 and the second plug-in portion 73. The second locking protrusions 71 are arranged on the first plug-in portion 72. The first plug-in portion 72 further includes a second limiting portion 74 behind the second locking protrusions 71. A second locking position 75 is formed between the second limiting portion 74 and the first plug-in portion 72. The first housing 10 further includes a second mounting opening 121f. The support frame 2a is inserted into the first mounting position 80 through the second mounting opening 121f, and the second plug-in portion 73 is at least partially inserted into the second mounting position 90. The second movable member body 42 is partially located in the first accommodating position 76. When the support frame 2a is in the locked state, the second protrusions 45 are located in the second locking position 75.

[0403] In some embodiments, in order to improve the strength of the first housing 10, the first housing 10 comprises a first housing body 11f and a reinforcing shell 12f connected with the first housing body 11f, the first housing body 11f and the reinforcing shell 12f are provided separately, and are connected by threads or glue. The reinforcing shell 12f is made of metal material. Of course, in other embodiments, the first housing body 11f and the reinforcing shell 12f can be provided integrally, and the first housing body 11f and the reinforcing shell 12f are made of plastic material. Further, the first housing 10 can form a second mounting position 90 with the second movable member body 42 through the reinforcing shell 12f, and the second housing 12 forms a first mounting position 80 between the second movable member body 42 and the auxiliary housing 22f. Further, the reinforcing shell 12f defines a second mounting opening 121f. And the first accommodating position 76 is in communication with the second locking position 75.

[0404] In the above embodiments, by providing the first mounting position 80 and the first plug-in part 72, the support frame 2a can be plugged into the first housing 10 through the first mounting position 80. By providing the second mounting position 90 and the second plug-in part 73, the support frame 2a can be further positioned and installed. By providing the second limiting part 74, the movement of the support frame 2a relative to the first housing 10 towards the back can be locked. Further, the first protrusion 41 and the second protrusion 45 are arranged in an axial direction.

[0405] In some embodiments, the power tool 1 further comprises a reach piece 129, when the second movable member 40 reaches the fifth specified position or the sixth specified position, the second movable member 40 elastically clamps with the reach piece 129. Specifically, the reach piece 129 is a spring, and a first clamping structure 130 is arranged on the side of the reach piece 129 facing the second movable member 40. A second clamping structure 135 is arranged on the side of the second movable member 40 facing the reach piece 129. When the second movable member 40 reaches the fifth specified position or the sixth specified position, the first clamping structure 130 and the second clamping structure 135 are aligned, and at this time, there is a sound of just clamping, so that the user knows that the second movable member 40 has reached the fifth specified position or the sixth specified position. Specifically, the first clamping structure 130 can be a groove or a protrusion, and the second clamping structure 135 can correspondingly be a protrusion or a groove. When the second movable member 40 has not reached the fifth specified position or the sixth specified position, the spring is in a compressed state. When the second movable member 40 reaches the fifth specified position or the sixth specified position, the second clamping structure 135, such as a protrusion arranged on the spring, pops into the first clamping structure 130 (a groove arranged on the second movable member), at this time, the spring force is slightly released, and there is a sound of clamping, which represents that the second movable member 40 is moved to the position. The first housing 10 is provided with a second accommodating groove for accommodating the reach piece 129.

[0406] In summary, the working principle of the power tool 1 of the embodiment is as follows: when the second movable member 40 is rotated to the sixth specified position, the movement of the support frame 2a is unlocked, that is, the second protrusion 45 and the second locking protrusion 71 are misaligned, and at this time, the first protrusion 41 and the first locking protrusion 221 are arranged opposite to each other, the movement of the second shell 12 relative to the first shell 10 is locked, and at this time, the support frame 2a of the power tool 1 can be disassembled for screwing or drilling. When the second movable member 40 is rotated to the fifth specified position, the movement of the support frame 2a is locked, that is, the second protrusion 45 and the second locking protrusion 71 are arranged opposite to each other, and at this time, the first protrusion 41 and the first locking protrusion 221 are misaligned in the axial direction, the movement of the second shell 12 relative to the first shell 10 is unlocked, and at this time, the user can cooperate with the support frame 2a to perform tapping or drilling operation. When the second shell 12 moves axially relative to the first shell 10 to the first specified position, the first position sensor 112 detects the signal change caused by the first detection position 44, and the control mainboard controls the driving mechanism to stop rotating.

[0407] Please refer to the gear shifting mechanism of the power tool of the fifth embodiment, as shown in FIG. 4-1 to FIG. 4-14.

[0408] BRIEF DESCRIPTION OF DRAWINGS: FIG. 4-1 is a structural schematic diagram of the power tool of one of the embodiments of the present embodiment; FIG. 4-2 is a structural schematic diagram of the power tool in which the second shell extends relative to the first shell; FIG. 4-3 is a structural schematic diagram of the gear shifting mechanism of one of the embodiments of the present embodiment located in the shell; FIG. 4-4 is an exploded schematic diagram of the gear shifting mechanism and part of the structure of the power tool; FIG. 4-5 is a structural schematic diagram of the gear shifting mechanism of FIG. 4-4 when the power tool is in the first gear; FIG. 4-6 is a structural schematic diagram of the gear shifting mechanism of FIG. 4-5 when the power tool is in the second gear; FIG. 4-7 is a structural schematic diagram of the gear shifting mechanism of FIG. 4-6 when the power tool is in the third gear; FIG. 4-8 is a structural schematic diagram of the shell provided in FIG. 4-7; FIG. 4-9 is a structural schematic diagram of the shell provided in FIG. 4-8; FIG. 4-10 is a structural schematic diagram of the gear shifting mechanism of FIG. 4-5; FIG. 4-11 is a structural schematic diagram of the first movable member of FIG. 4-10; FIG. 4-12 is a structural schematic diagram of the elastic member of FIG. 4-10; FIG. 4-13 is a structural schematic diagram of the first movable member of FIG. 4-10; and FIG. 4-14 is a structural schematic diagram of the gear shifting mechanism provided in another embodiment of the present embodiment.

[0409] As shown in FIGS. 4-1 to 4-14, the second aspect of the present embodiment provides a gear shifting mechanism 100g applied to the electric power tool 1 of the present embodiment, which further comprises a housing 500g, a speed reducer 1102 arranged in the housing 500g, and a motor 1103 arranged in the housing 500g and in driving connection with the speed reducer 1102; the gear shifting mechanism 100g is arranged in the housing 500g; the gear shifting mechanism 100g comprises a first movable member 11g, a pushing structure 12g, and a first action member 13g, the first movable member 11g is movably arranged in the housing 500g, the pushing structure 12g is connected with the first movable member 11g and is configured to be able to push the first movable member 11g to move relative to the housing 500g along a first direction b, and the first action member 13g is arranged on a side of the first movable member 11g away from the pushing structure 12g and is configured to be able to be moved by the first movable member 11g when the pushing structure 12g drives the first movable member 11g to move relative to the housing 500g along the first direction b; the speed reducer 1102 comprises a trigger member 201g, the first movable member 11g drives the first action member 13g to move and in turn drives the first action member 13g to push the trigger member 201g, so that the electric power tool 1 can be switched from a first gear to a second gear; the gear shifting mechanism 100g further comprises a detection assembly arranged in the housing 500g and in electrical connection with the motor 1103, the detection assembly is configured to be able to detect a third position of the first movable member 11g when the first movable member 11g moves along the first direction b to the third position and adjust an output mode of the motor 1103 according to the third position so that the electric power tool 1 is switched from the second gear to a third gear; wherein the first direction b is parallel to an axial direction of the housing 500g. The present embodiment sets the detection assembly to meet the demand of the electric power tool 1 having the third gear for gear adjustment, and the present embodiment drives the pushing structure 12g to move the first movable member 11g along the first direction b to switch the three gears of the electric power tool 1, so that the electric power tool 1 is convenient to adjust the gears. The above-mentioned first direction b can be defined as follows: taking the speed reducer 1102 as a reference, the speed reducer 1102 is connected with a tool, as shown in FIG. 4-6, a side away from an output end of the speed reducer 1102 can be a side of the speed reducer 1102 facing the first direction b; or a side facing the output end of the speed reducer 1102 can be defined as a side of the speed reducer 1102 facing the first direction b (not shown in the drawing); the first direction b is parallel to the axial direction of the housing 500g. In one embodiment, the electric power tool 1 has a front-rear direction, the first direction b is consistent with the rearward direction, and a direction away from the first direction b is the forward direction.

[0410] In the above embodiment, when the first movable member moves from the first position to the second position in the first direction, the trigger member is pushed from the first gear position to the second gear position, the gear ratio of the speed reducer changes, and the power tool switches from the first gear to the second gear. When the first movable member moves from the second position to the third position in the first direction, the second position sensor 1304 detects a signal that the first movable member is at the third position, the control board adjusts the output speed and / or torque of the motor, and the power tool switches from the second gear to the third gear. When the first movable member 11g moves away from the third position in a direction opposite to the first direction b, the detection assembly cannot detect a signal that the first movable member is at the third position, and the output mode of the motor 1103 changes, so that the power tool 1 switches from the third gear back to the second gear. Alternatively, when the first movable member moves from the third position to the second position in a direction opposite to the first direction b, the second position sensor 1304 detects a signal that the first movable member moves to the second position, the motor changes its speed and / or torque, and the power tool 1 switches from the third gear back to the second gear. When the first movable member 11g continues to move from the second position to the first position in a direction opposite to the first direction b, the second action end 113g (described below) will move the trigger member 201g from the second gear position to the first gear position, so that the gear ratio changes, and the power tool 1 switches from the second gear back to the first gear. In summary, the first movable member can drive the trigger member to switch between the first gear position and the second gear position, so that the power tool can switch between the first gear and the second gear.

[0411] The embodiment provides a gear adjusting mechanism 100g which can be applied to the electric tool 1 and can adjust the angular velocity output by the electric tool 1. The electric tool 1 can be connected with different tools, thereby having different functions. For example, when the tool is a screwdriver, the electric tool 1 can be used as an electric screwdriver, when the tool is a drill bit, the electric tool 1 can be used as an electric drill, and when the tool is a tapping tool, the electric tool 1 can be used as an electric tapping tool. Generally, the output end of the electric tool 1 is connected with a clamp, and the shank of the tool is clamped in the clamp. In an example, the electric tool 1 can include a driving mechanism which can at least include a motor 1103, and of course can also include a reducer 1102, a clamp, a clutch structure (not shown in the figure) and / or a cooling fan and other functional components, and corresponding components can be assembled according to actual needs, and details are not described herein. The motor 1103 is generally fixed in the interior of the shell 500g, thereby stably outputting torque and rotating speed, and therefore, in the following, adjusting the mode of the motor 1103 generally means adjusting the rotating speed or torque of the main shaft of the motor 1103, when the output rotating speed or torque of the motor 1103 changes, the rotating speed or torque transmitted to the tool will change, and the electric tool 1 will switch from the current gear to another gear. The motor 1103 is in transmission connection with the reducer 1102, for example, the main shaft of the motor 1103 is connected with the input shaft of the reducer 1102 through a shaft coupling, to drive the rotation of the input shaft, and the input rotating speed of the input shaft can be converted into the output rotating speed of the output shaft of the reducer 1102 through the structure (for example, a gear train) in the interior of the reducer 1102, and it can be understood that the output rotating speed and the input rotating speed have a certain proportional relationship, for example, the input rotating speed can be a certain multiple of the output rotating speed, and the certain multiple can be any one of 1 times, 2 times,..., N times. Generally, the output end of the electric tool 1 is connected with a clamp, and the shank of the tool is clamped in the clamp, so that the rotation of the output end can be transmitted to the tool. The output end can be the main shaft of the motor 1103 or the output shaft of the reducer 1102. Or, when the clutch structure is provided, the output shaft of the reducer 1102 is sequentially connected with the clutch structure and the clamp. The electric tool 1 includes a shell 500g which is generally in the shape of an elliptical cylinder or a circular cylinder, the shell 500g can be spliced by two symmetrical shells 500g, the interior of the shell 500g is hollow, thereby accommodating the driving mechanism, for example, the motor 1103, the reducer 1102 and the clutch structure are sequentially arranged in the interior of the shell 500g along the axial direction of the shell 500g, a hole structure is formed in one end of the shell 500g along the axial direction, and the output end of the driving structure can extend out of the shell 500g through the hole structure, thereby being connected with the clamp.In some embodiments, the housing 500g comprises a first housing 10 for a user to hold to hand the power tool 1 to perform a machining operation, and a second housing 12 which is slidingly connected to the first housing 10 and is retractable relative to the first housing 10, the driving mechanism is arranged in the second housing 12, and the gear shifting mechanism 100g is arranged in the second housing 12. In some embodiments, the tool is at least one of a screwdriver, a drill bit, and a tap. It is to be noted that when the user uses the power tool 1 to drive a screw, drill, or tap, the user can choose to lock the movement of the second housing 12 relative to the first housing 10 and the movement of the driving mechanism relative to the first housing 10, so that the working mode of the power tool 1 is almost the same as that of a conventional power tool 1 (the driving mechanism is not movable relative to the first housing 10). Generally, when the user uses the power tool 1 to drive a screw, the user usually needs to lock the movement of the second housing 12 relative to the first housing 10, so as to lock the movement of the driving mechanism relative to the first housing 10, and when the tool head is driving a screw, the tool, the first housing 10, and the second housing 12 as a whole move relative to the machining surface along with the movement of the screw. When the user uses the power tool 1 to drill or tap, the user can choose to unlock the movement of the second housing 12 relative to the first housing 10, so as to unlock the movement of the driving mechanism relative to the first housing 10, and when the tool head is feeding, the driving mechanism, the second housing 12, and the tool as a whole can move relative to the first housing 10. Of course, the user can also choose to lock the movement of the second housing 12 relative to the first housing 10 to drill or tap.

[0412] The electric tool 1 of the embodiment is used in cooperation with the support frame 2a (as shown in FIG. 4-2), and the safety performance is greatly improved, and has the functions of screw driving, electric drilling and tapping. The traditional electric tool 1 is difficult to integrate the three functions due to the problems of easy shaking of the tool bit and poor safety performance, etc., which brings inconvenience to the user. Therefore, the traditional electric tool 1 generally only has two gear positions to realize the functions of screw driving or electric drilling. However, the gear adjusting mechanism 100g of the electric tool 1 of the embodiment has three gear positions for adjusting, which correspond to screw driving, electric drilling and tapping respectively. The rotational speed and torque of the output end of the driving mechanism corresponding to the three gear positions should be different. Usually, when the first movable part is in the third position, the second position sensor detects the third position of the first movable part and sends a signal of the third position of the first movable part to the control mainboard. The control mainboard will control the rotational speed of the motor output end to change according to the signal. Usually, when the electric tool is in the first gear mode, it corresponds to the electric drilling mode; when the electric tool is in the second gear mode, it corresponds to the electric screwdriver mode, at this time the speed reduction ratio of the speed reducer changes, the rotational speed of the output end of the driving mechanism decreases, but the torque increases; when the electric tool is in the third mode, it corresponds to the tapping mode, at this time the rotational speed of the motor decreases, but the speed reduction ratio of the speed reducer does not change, the rotational speed of the output end of the driving mechanism decreases, and the torque also decreases (compared with the electric screwdriver mode). However, the torque of the tapping mode is still greater than that of the electric drilling mode. In some embodiments, the axial direction of the electric tool 1 is parallel to the axial direction of the first shell 10, the second shell 12, the motor 1103, the speed reducer 1102 and the support frame 2a. In some embodiments, the first shell 10 is in the shape of a pistol, and the hand holding part is formed as a gun barrel. In other embodiments, the first shell 10 is in the shape of a long strip, and the hand holding part is formed on the first shell 10. It should be noted that the above-mentioned components arranged in the shell do not mean that all parts of the component are arranged in the shell, and part of the component may protrude out of the shell. The above-mentioned electric tool 1, the gear adjusting mechanism 100g is arranged in the second shell 12. Of course, in other embodiments, without arranging the second shell 12, such as the traditional electric tool 1 which usually only has the first shell 10, the gear adjusting mechanism 100g is arranged in the first shell 10. The gear adjusting mechanism 100g of the embodiment can be applied to the above-mentioned electric tool 1 and the traditional electric tool 1. In addition, when the electric tool has other uses in addition to tapping, electric drilling and screw driving, the gear adjusting mechanism of the embodiment is also applicable.

[0413] In some embodiments, the sixth opening 505 is arranged on the shell 500g. The sixth opening 505 penetrates the shell 500g, that is, the sixth opening 505 can communicate the inside and outside of the shell 500g. In one possible example, the projection shape of the sixth opening 505 can be a square or a rectangle, and other shapes can be selected according to actual requirements, and the embodiments are not limited in this regard. The sixth opening 505 extends along the axial direction of the shell 500g. Along the axial direction of the shell 500g, the sixth opening 505 has a certain length. In some embodiments, the actuating structure 12g is arranged in the sixth opening 505 and at least partially exposed from the sixth opening 505, so that the user actuates the actuating structure 12g to drive the first movable piece 11g to move in the first direction b. In some possible embodiments, the actuating structure 12g is a protruding actuating protrusion formed on the first movable piece 11g, and the actuating structure 12g is integrally connected with the first movable piece 11g. In some possible embodiments, as shown in FIG. 4-14, the actuating structure 12g is arranged separately from the first movable piece 11g. For example, when the actuating structure 12g is a gear shifting knob, the gear shifting knob is rotationally connected to the shell 500g, the gear shifting knob is provided with first clamping teeth, and the first movable piece 11g (which can be defined as a clamping strip) is provided with second clamping teeth corresponding to the first clamping teeth. When the gear shifting knob rotates, the first clamping teeth and the second clamping teeth are engaged to drive the first movable piece 11g to move in the first direction b. In some possible embodiments, the actuating structure 12g is not arranged in the sixth opening 505, and the actuating structure 12g is connected with the first movable piece 11g through other components to drive the first movable piece 11g to move by actuating the actuating structure 12g. In some embodiments, the actuating structure 12g can be a plate-shaped structure with a certain thickness. When the sixth opening 505 is arranged on the second shell 12, the sixth opening 505 is the sixth opening 1203 of the embodiments. Optionally, the cross-sectional shape of the actuating structure 12g can be a regular shape such as a square, a rectangle, a circle, a kidney shape, or an irregular shape, which can be selected according to actual conditions, and the embodiments are not limited in this regard. In one embodiment, the edges of the actuating structure 12g can be chamfered to avoid scratching the user during use. In some possible examples, a gasket can be arranged on the actuating structure 12g to improve the feel when the user actuates the actuating structure 12g. The arrangement direction of the actuating structure 12g can be perpendicular to the first movable piece 11g, or the actuating structure 12g can be arranged at an angle other than perpendicular to the first movable piece 11g. The specific arrangement direction of the actuating structure 12g can be selected according to actual conditions, and the embodiments are not limited in this regard. For example, along the circumferential direction of the shell 500g, the two outer side walls of the actuating structure 12g abut the two inner side walls of the sixth opening 505, so that when the actuating structure 12g moves in the sixth opening 505 along the axial direction, the actuating structure 12g cannot shake in the sixth opening 505 along the circumferential direction.In some embodiments, the first movable element 11g is in sliding connection with the housing 500g, for example, one of the first movable element 11g and the housing 500g is provided with a sliding groove, and the other is provided with a guide protrusion, and the first movable element 11g is in sliding connection with the housing 500g through the sliding groove and the guide protrusion. In another possible embodiment, the actuating structure 12g is in sliding connection with the housing 500g through the cooperation of a guide protrusion and a guide groove, one of the actuating structure 12g and the housing 500g is provided with the guide protrusion, and the other is provided with the guide groove, and the first movable element 11g is in sliding connection with the housing 500g through the actuating structure 12g. The speed reducer 1102 is arranged in the housing 500g and in transmission connection with the motor 1103. When the speed reducer 1102 is installed in the housing 500g, the speed reducer 1102 can be detachably connected with the housing 500g. For example, the housing 500g is provided with a mounting groove (not shown in the drawings) matched with the outer contour of the speed reducer 1102, and the speed reducer 1102 is embedded in the housing 500g through the mounting groove. Those skilled in the art can think of other connection modes of the speed reducer 1102 and the housing 500g according to the present embodiment without creative labor, for example, threaded connection. Some possible connection modes between the speed reducer 1102 and the motor 1103 have been described above, and will not be described here again.

[0414] In some embodiments, the speed reducer 1102 comprises a trigger 201g, which is configured to be actuated to change the speed reduction ratio of the speed reducer 1102, so as to change the output rotational speed or torque of the tool, and further change the gear of the power tool 1. For example, the speed reducer 1102 is a two-gear speed reducer, and at least two sets of transmission structures are arranged in the speed reducer 1102, and the trigger 201g can be actuated to adjust one set of transmission structure to another set of transmission structure, so as to change the proportional relationship between the output rotational speed and the input rotational speed, and the above switching mode can be defined as switching gears. It should be understood that the first gear, the second gear and the third gear should be different in the rotational speed or torque transmitted by the power tool 1 to the tool. In some embodiments, as shown in FIG. 4-4, the trigger 201g can be a lever provided on the speed reducer 1102, and in some embodiments, as shown in FIG. 4-14, the trigger 201g can be an actuating slider (which can also be defined as a speed change knob) provided on the speed reducer 1102, and the trigger 201g is movably arranged on the speed reducer 1102.

[0415] It can be understood that after the toggle structure 12g is subjected to the pushing force of the user, the toggle structure 12g drives the first movable piece 11g to move from the first position to the second position along the first direction b, and in this process, the first movable piece 11g can drive the first action piece 13g to move, the first action piece 13g can drive the trigger piece 201g to move from the first gear position to the second gear position, the movement of the trigger piece 201g can trigger the change of the speed reduction ratio of the speed reducer 1102 to change the output rotating speed of the speed reducer 1102, and then the rotating speed of the cutter is changed, and the electric tool 1 is switched from the first gear to the second gear. In some embodiments, when the first movable piece 11g moves from the first position to the second position, the first action piece 13g has been separated from the first movable piece 11g, but the toggle lever can not have reached the second gear position but is close to the second gear position, at this time, the speed reduction ratio of the speed reducer 1102 has been changed, at this time, the gear of the electric tool 1 is switched from the first gear to the second gear, and then the toggle lever is spontaneously moved to the second gear position by inertia. In some embodiments, when the first movable piece 11g moves from the first position to the second position, the first action piece 13g can not have been separated from the first movable piece 11g, but the toggle lever can have just reached the second gear position, at this time, the speed reduction ratio of the speed reducer 1102 has been changed, at this time, the gear of the electric tool 1 is switched from the first gear to the second gear.

[0416] In some embodiments, when the first movable piece 11g moves from the second position to the first position, the toggle lever can not have reached the first gear position but is close to the first gear position, at this time, the speed reduction ratio of the speed reducer 1102 has been changed, at this time, the gear of the electric tool 1 is switched from the second gear to the first gear, and then the toggle lever is moved to the first gear position by inertia.

[0417] In some embodiments, when the first movable member 11g moves from the second position to the first position, the shift lever can just reach the position of the first gear, at which time the reduction ratio of the speed reducer 1102 has changed, at which time the gear of the power tool 1 is switched from the second gear to the first gear. (As shown in FIGS. 4-5, the shift lever is in the position of the first gear, the first movable member 11g is in the first position, and the power tool 1 is in the first gear position, at which time the first movable member 13g and the first movable member 11g are not separated, and the first movable member 13g is in the first slot 501a); (As shown in FIGS. 4-6, the shift lever is in the position of the second gear, the first movable member 11g is in the second position, and the power tool 1 is in the second gear, at which time the first movable member 13g and the first movable member 11g are separated, and the first movable member 13g is in the second slot 502a); (As shown in FIGS. 4-7, the first movable member 11g is in the third position, and the power tool 1 is in the third gear). In some embodiments, when the power tool 1 is in the first gear, the power tool 1 can be in the drill mode, when the power tool 1 is in the second gear, the power tool 1 can be in the screwdriver mode, and when the power tool 1 is in the third gear, the power tool 1 can be in the tapping mode; or when the power tool 1 is in the third gear, the power tool 1 can be in the drill mode, when the power tool 1 is in the second gear, the power tool 1 can be in the screwdriver mode, and when the power tool 1 is in the first gear, the power tool 1 can be in the tapping mode; or combinations of other modes.

[0418] In some embodiments, after the pushing force on the dial structure 12g is removed, the first movable member 11g moves from the second position to the first position relative to the housing 500g along the first direction b, and the detection assembly detects the first position of the first movable member 11g, and the controller adjusts the output mode of the motor 1103, such as the rotation speed or the torque of the motor 1103, according to the first position of the first movable member 11g. In one possible embodiment, the detection assembly (not shown in the figure) can be a trigger switch connected to the inner wall of the housing 500g. When the first movable member 11g moves to the first position, the trigger switch is triggered, and the controller adjusts the output mode of the motor 1103, and the power tool 1 switches from the third gear to the first gear. In another possible embodiment, the detection assembly can include a Hall sensor and a magnet. One of the Hall sensor and the magnet is connected to the inner wall of the housing 500g, and the other is arranged on the first movable member 11g. When the first movable member 11g moves to the first position, the Hall sensor detects the change of the magnetic field, and transmits a signal to the controller. After processing the signal, the controller changes the output mode of the motor 1103. In this embodiment, the controller is integrated on the control mainboard. In another possible embodiment, the detection assembly can include a light sensor, or the detection assembly can include an infrared sensor or other sensors, which are not listed here. It should be understood that, in some embodiments, as shown in FIGS. 4-14, the first movable member 11g is in sliding connection with the housing 500g, and the first movable member 11g and the speed reducer 1102 define an accommodation space. For example, the accommodation space can be defined by the concave arrangement of the first movable member 11g. The first movable member 13g is a compression spring, and the first movable member 13g is arranged in the accommodation space. The first movable member 13g is in abutment with the trigger piece 201g (for example, a trigger slider) on the speed reducer 1102 at one end, and in abutment with the accommodation wall of the accommodation space at the other end. When the first movable member 11g moves from the first position to the second position along the first direction b due to the force on the dial structure 12g, the accommodation wall of the first movable member 11g pushes the compression spring to move and in turn drives the trigger slider to move. At this time, since the trigger slider is easy to slide, the compression spring can not need to be compressed to push the trigger slider to move, or the compression spring can be compressed a little to push the trigger slider to move. The movement of the trigger slider from the first gear position to the second gear position changes the speed reduction ratio of the speed reducer 1102, so that the power tool 1 switches from the first gear to the second gear. When the dial structure 12g continues to be pushed to move, since the trigger slider cannot continue to move at this time, the accommodation wall of the first movable member 11g compresses the compression spring. After the compression spring is compressed, the first movable member 11g can continue to move from the second position to the third position along the first direction b. At this time, the detection assembly detects the third position of the first movable member 11g, so that the output rotation speed of the motor 1103 is changed to switch the power tool 1 from the second gear to the third gear.

[0419] In the embodiment, the first action piece 13g is in sliding connection with the shell 500g, and the first movable piece 11g is connectable or separable with the first action piece 13g; when the first movable piece 11g is connected with the first action piece 13g, the first movable piece 11g can drive the first action piece 13g to move and actuate the trigger 201g, so that the electric tool 1 can be switched from the first gear to the second gear; after the first movable piece 11g is separated from the first action piece 13g, the first movable piece 11g continues to move to the third position along the first direction b. The three-gear switching of the electric tool 1 can be realized by moving the first movable piece 11g along the first direction b to actuate the actuating structure 12g, so that the electric tool 1 is convenient to adjust the gears; by setting the first action piece 13g, the first movable piece 11g is driven by the actuating structure 12g to move along the first direction, and then the first movable piece 11g drives the first action piece 13g to move; during the movement of the first action piece 13g, the trigger 201g is actuated from the first gear position to the second gear position 201g, so that the speed reduction ratio of the speed reducer changes, and the electric tool 1 is switched from the first gear to the second gear; after the first movable piece 11g is separated from the first action piece 13g, the first movable piece 11g can continue to move from the second position to the third position along the first direction b, so that the detection assembly can detect the third position of the first movable piece 11g to switch gears. Here, the first action piece 13g is connected with the first movable piece 11g, and the movement states of the first action piece 13g and the first movable piece 11g are described; for example, the first movable piece 11g can drive the first action piece 13g to move, so that the first movable piece 11g is defined as being connected with the first action piece 13g; for example, in one possible embodiment, part of the first movable piece 11g and part of the first action piece 13g are inserted into the first sliding groove 501a or the guide protrusion of the shell 500g; due to the limitation of the groove thickness of the first sliding groove 501a, the first movable piece 11g and the first action piece 13g cannot be separated when moving in the first sliding groove 501a; at this stage, the first movable piece 11g can drive the first action piece 13g to move when the first movable piece 11g moves; at this time, the first movable piece 11g and the first action piece 13g do not necessarily have to be structurally inserted or clamped, and the first movable piece 11g can also be defined as being connected with the first action piece 13g. The first action piece 13g is used to actuate the trigger 201g; during the movement of the trigger 201g from the first gear position to the second gear position by the first action piece 13g, the trigger 201g generates a pulling force away from the first direction, at this time, the first action piece is driven by the first movable piece 11g to move from the first sliding section 501 to the second sliding section 502, so that the first action piece is separated from the first movable piece; after the first action piece 13g is separated from the first movable piece 11g, the first movable piece 11g can continue to move from the second position to the third position along the first direction b, so that the detection assembly can detect the third position of the first movable piece 11g, and the output mode of the motor 1103 can be changed according to the third position to switch gears.It should be understood that after the first movable member 11g is separated from the first action member 13g, the first movable member 11g can move along the first direction b without being limited by the first action member 13g, so that the first movable member can move to the third position.

[0420] In summary, the speed adjusting mechanism 100g provided by the embodiment can adjust the speed of the electric tool 1. When the trigger 201g is in the movable state, the dialing structure 12g drives the first movable member 11g to move between the first position and the second position, thereby driving the first action member 13g to move and dialing the trigger 201g to move between the first gear position and the second gear position, so as to adjust the speed reduction ratio of the speed reducer 1102, and then adjust the rotation speed and / or torque of the output end of the electric tool 1, thereby switching the electric tool 1 between the first gear and the second gear. When the first movable member 11g continues to move from the second position to the third position in the first direction b or moves from the third position to the second position away from the first direction b, the electric tool 1 is switched between the second gear and the third gear. In the above embodiment, when the first movable member 11g moves from the third position to the second position away from the first direction b, the signal detected by the detection assembly changes, for example, from yes to no, and then the controller controls the motor 1103 to change the rotation speed or torque, so that the electric tool 1 is switched from the third gear to the second gear. Alternatively, the detection assembly can detect the signal that the first movable member 11g moves to the second position, and then the controller controls the motor 1103 to change the rotation speed or torque, so that the electric tool 1 is switched from the third gear to the second gear. When the first movable member 11g moves from the third position to the second position away from the first direction b, the signal detected by the detection assembly (for example, the second position sensor 1304) changes from yes to no, and then the signal from yes to no is transmitted to the controller, and the controller controls the motor 1103 to change the rotation speed or torque, so that the electric tool 1 is switched from the third gear to the second gear. Alternatively, the second position sensor 1304 detects the signal that the first movable member 11g is located at the second position, and then the controller controls the motor 1103 to change the rotation speed or torque according to the signal, so that the electric tool 1 is switched from the third gear to the second gear.

[0421] Some embodiments, the gear shifting mechanism 100g further comprises a separation structure, the separation structure is arranged on the first movable member 11g or the first action member 13g, the first separation structure is used to separate the first action member 13g from the first movable member 11g in a direction away from the actuating structure 12g. Some embodiments, as shown in FIG. 4-13, the separation structure is a seventh guide surface 1123 formed on the first movable member 11g, the seventh guide surface 1123 is configured to be able to be moved by the first action member 13g along the seventh guide surface 1123 relative to the first movable member 11g until separated from the first movable member 11g. Since the first action member 13g is used to actuate the trigger member 201g, when the user actuates the actuating structure 12g in the first direction, the trigger member 201g will form a pulling force on the first action member 13g away from the first direction b, under the action of the pulling force, when the first action member 13g moves to the position of the second sliding segment, the first action member will move along the seventh guide surface 1123 relative to the first movable member 11g to the second sliding segment until separated from the first movable member 11g.

[0422] In some embodiments, the seventh guide surface 1123 can be an inclined surface, or an arc surface, or other irregular surface, etc. capable of guiding the first action member 13g so that the first action member 13g can move along the seventh guide surface 1123 and separate from the first movable member 11g. In some possible embodiments, the first separation structure can also be a guide surface formed on the first action member 13g. In another possible embodiment, the separation structure is a spring ball arranged on the first movable member 11g or the first action member 13g. When the first movable member 11g is connected with the first action member 13g, the spring ball is in a compressed state. When the first movable member 11g drives the first action member 13g to move to the third gap, the spring ball pushes the first action member 13g away to make the first action member move through the third gap to the second sliding groove, so that the first movable member 11g and the first action member 13g are separated. For example, the first action member 13g is inserted into the first sliding groove 501a and is connected with the housing 500g in a sliding manner. Due to the thickness of the first sliding groove 501a on the housing 500g, the first action member 13g cannot be separated from the first movable member 11g when moving in the first sliding groove 501a. At this time, the spring ball is in a compressed state. In this stage, the first movable member 11g drives the first action member 13g to slide. When moving to a certain distance, in one possible embodiment, the first sliding groove is provided with a third gap 506. When the first action member moves to the third gap 506, the first action member moves to the second sliding groove through the third gap 506. The second sliding groove 502a is arranged on one side of the first sliding groove 501a facing the first direction b and away from the side of the actuating structure 12g (if the front, back, up and down directions of the housing 500g are defined, assuming that the actuating structure 12g is arranged on the upper side of the housing 500g, the second sliding groove 502a is arranged on the lower back side of the first sliding groove 501a. The front, back, up and down directions are only used to facilitate more intuitive description of the directions. Of course, in other embodiments, the actuating structure 12g can not be arranged on the upper side of the housing 500g, but can be arranged on the left side or the right side of the housing 500g. Then, the position of the second sliding groove 502a corresponds to the right back side or the left back side of the first sliding groove 501a). Due to the elastic force of the spring ball, the first action member 13g is pushed into the second sliding groove 502a, and the first movable member 11g and the first action member 13g are separated in the up-down direction. After the actuating structure 12g continues to drive the first movable member 11g to move from the second position to the third position in the first direction b, the detection assembly detects the third position of the first movable member 11g, and directly adjusts the output mode of the motor 1103 according to the preset strategy.In another possible implementation, the first sliding groove is provided with a third gap 506, and the first movable member is pulled by the trigger member in a direction opposite to the first direction during the movement of the first movable member in the first direction. Thus, when the first movable member moves to the third gap 506, the first movable member moves from the first sliding groove to the second sliding groove along a seventh guide surface through the third gap 506, and the first movable member is separated from the first movable member. When the first movable member continues to move in the first direction to a third position, the second position sensor 1304 detects that the first movable member is located at the third position, and the motor adjusts the rotation speed and / or the torque.

[0423] The first sliding groove 501a and the second sliding groove 502a are replaced by the guide protrusions on the shell 500g, which is also applicable. The following description is not expanded here. When the first movable piece 11g moves in the direction away from the first direction b, the first action piece 13g moves into the first sliding groove through the third gap 506, and the ball is compressed by the first action piece 13g. In some embodiments, the first movable piece 11g further includes a first body 111g connected with the actuating structure 12g and a first positioning structure 112g disposed on the side of the first body 111g away from the actuating structure 12g; the first action piece 13g includes a second positioning structure 1311 corresponding to the first positioning structure 112g, and the first action piece 13g can be sleeved on the first positioning structure 112g through the second positioning structure 1311 so that the first action piece 13g can be connected to the side of the first body 111g away from the actuating structure 12g, and one of the first positioning structure 112g and the second positioning structure 1311 is a third positioning protrusion 112a, and the other is a positioning hole 1311a. By setting the cooperation of the first positioning structure 112g and the second positioning structure 1311, the first movable piece 11g can drive the first action piece 13g to move. In some embodiments, the first action piece 13g is in sliding connection with the shell 500g, and the first movable piece 11g is also in sliding connection with the shell 500g, but since the thickness of the first movable piece 11g is much larger than that of the first action piece 13g, at this time, if the first movable piece 11g and the first action piece 13g are inserted into the same sliding groove of the shell 500g so that the first movable piece 11g can drive the first action piece 13g to move, in order to match the thickness of the guide protrusion of the first movable piece 11g, the groove thickness of the sliding groove will also be relatively large, but the guidance of the first action piece 13g with smaller thickness will not be very stable. Therefore, the first movable piece 11g and the first action piece 13g are often inserted into different sliding grooves of the shell 500g, so that the first movable piece 11g needs to drive the first action piece 13g to move through the cooperation of the first positioning structure 112g and the second positioning structure 1311. Of course, in other embodiments, the thickness of the first movable piece 11g and the first action piece 13g can be similar, the first movable piece 11g and the first action piece 13g are inserted into the same sliding groove of the shell 500g, the seventh guide surface 1123 is disposed on the part of the first movable piece 11g inserted into the sliding groove, and the seventh guide surface 1123 is disposed opposite to the first action piece 13g, when the first movable piece 11g drives the first action piece 13g to move to the position where the first action piece 13g is located in the third gap 506, the first action piece 13g can move relative to the first movable piece 11g along the seventh guide surface 1123 until it is separated from the first movable piece 11g, or the ball separates the two, at this time the first action piece moves from the first sliding groove to the second sliding groove through the third gap 506.Or when the first movable piece 11g and the first action piece 13g are inserted into the same sliding slot of the shell 500g, in order to make the first movable piece 11g more stable to drive the first action piece 13g to move, the first positioning structure 112g and the second positioning structure 1311 can also be arranged. The sliding slot arranged on the shell 500g above only guides the first movable piece 11g or the first action piece 13g, which can also be replaced by a guide protrusion, and the first movable piece 11g and the first action piece 13g are correspondingly provided with a sliding slot. For example, the first sliding section and the second sliding section are guide protrusions, and the part of the first movable piece connected with the first sliding section or the second sliding section is provided with a sliding slot, when the first movable piece moves from the first position to the second position, the first movable piece can slide from the first sliding section to the second sliding section, and then the first action piece is separated from the first movable piece. In some embodiments, the first positioning structure 112g can be separately arranged or integrally arranged with the first body 111g. In this embodiment, the first positioning structure 112g is a third positioning protrusion 112a protruding from the first body 111g. The detection assembly is used to detect the third position of the first body 111g. In some embodiments, the separation structure is a seventh guide surface 1123 formed on the first movable piece 11g, the first positioning structure 112g is a third positioning protrusion 112a, the second positioning structure 1311 is a positioning hole 1311a, and the seventh guide surface 1123 is formed at one end of the third positioning protrusion 112a facing the first direction b. By arranging the seventh guide surface 1123 on the first positioning structure 112g, when the first movable piece 11g drives the first action piece 13g to move, since the trigger piece 201 moves from the first gear position to the second gear position, a pulling force away from the first direction is generated on the first action piece, when the first action piece is driven to move to a place with a second sliding slot, due to the action of the seventh guide surface, the first action piece can be moved from the first sliding slot to the second sliding slot to separate the first action piece from the first movable piece. Therefore, the second positioning structure 1311 moves relative to the seventh guide surface arranged on the first positioning structure 112g along the first shell 10, so that the two can be separated. In some embodiments, the seventh guide surface 1123 can also be formed on the second positioning structure 1311.

[0424] In some embodiments, the seventh guide surface 1123 has a first edge 11231 intersecting the first body 111g, and a second edge 11232 disposed on a side of the first edge 11231 away from the dial structure 12g, and the second edge 11232 is disposed on a side of the first edge 11231 away from the first direction b; the hole wall of the positioning hole 1311a is capable of moving along the seventh guide surface 1123 relative to the first movable piece 11g until the hole wall of the positioning hole 1311a is disengaged from the second edge 11232, and the first action piece 13g is separated from the first movable piece 11g; when the first action piece 13g is sleeved on the first movable piece 11g, the hole wall of the positioning hole 1311a is disposed opposite to the seventh guide surface 1123. In order to better describe the orientation, as shown in FIG. 4-13, it is assumed that the dial structure 12g is disposed on the upper side of the shell 500g, and the second edge 11232 is disposed on the lower front side of the first edge 11231, wherein the direction away from the first direction b is the front side of the shell 500g. In another possible embodiment, the first positioning structure 112g is the positioning hole 1311a, the second positioning structure 1311 is the third positioning protrusion 112a, and the seventh guide surface 1123 is disposed on the hole wall of the positioning hole 1311a away from the first direction b. In some embodiments, the third positioning protrusion 112a includes a fourth protruding portion 1121 continuously extending along the first direction b and connected with the first body 111g; the positioning hole 1311a includes a first hole 13111 matched in shape with the fourth protruding portion 1121. In the above embodiment, the fourth protruding portion 1121 continuously extends along the first direction b, so that when the first action piece 13g is separated from the first movable piece 11g, the first body 111g can continue to move relative to the first action piece 13g along the first direction b, at this time the fourth protruding portion 1121 presses the first action piece 13g, and the fourth protruding portion 1121 is disposed to continuously extend, so as to prevent the first action piece 13g from returning to the direction towards the first body 111g. In some embodiments, the third positioning protrusion 112a further includes a fifth protruding portion 1122 perpendicularly connected with the fourth protruding portion 1121, the fifth protruding portion 1122 is disposed on a side of the fourth protruding portion 1121 towards the first direction b, and the length of the fifth protruding portion 1122 in a direction perpendicular to the first direction b is greater than the length of the fourth protruding portion 1121 in the direction perpendicular to the first direction b; the seventh guide surface 1123 is formed on a side of the fifth protruding portion 1122 towards the first direction b; the positioning hole 1311a further includes a second hole 13112 in communication with the first hole 13111, the second hole 13112 is matched in shape with the fifth protruding portion 1122, and when the first action piece 13g is sleeved on the first movable piece 11g, the hole wall of the second hole 13112 is disposed opposite to the seventh guide surface 1123.In the above embodiments, in order to better describe the orientation, the first direction b is the rear direction of the housing 500g, and the direction perpendicular to the first direction b is the left-right side direction of the housing 500g, as shown in FIG. 4-13, the toggle structure 12g is arranged on the upper side of the housing 500g, and then the length of the fifth protrusion 1122 in the left-right direction of the housing 500g is greater than the length of the fourth protrusion 1121 in the left-right direction. By arranging in this way, the distance between the hole wall of the second hole 13112 in the direction perpendicular to the first direction b and the part of the first action member 13g inserted into the housing 500g is relatively small, that is, when the part of the first action member 13g inserted into the housing 500g is deformed, the hole wall of the second hole 13112 in the direction perpendicular to the first direction b is the base point, the distance between the hole wall and the part of the first action member 13g inserted into the housing 500g is the deformation arm, when the arm is short, the force required for deformation is relatively large, so that the first action member 13g is not easy to deform, when the first movable member 11g moves the first action member 13g, the first action member 13g is not easy to deform, for example, the first action member 11g is not easy to be concave in the middle, so that the first action member 13g is not easy to be separated from the third positioning protrusion 112a due to the concave middle, so that the first movable member 11g can move the first action member 13g to toggle the trigger 201g. In some embodiments, the overall shape of the third positioning protrusion 112a is T-shaped or T-like, and the overall shape of the positioning hole 1311a is also T-shaped or T-like. In some embodiments, the first action member 13g includes a first action end 132 protruding towards the trigger 201g and away from the first movable member 11g, and the first action member 13g toggles the trigger 201g to switch from the first gear to the second gear through the first action end 132; the gear shifting mechanism 100g further includes a second action end 113g arranged towards the trigger 201g, the second action end 113g is arranged on the side of the first action end 132 facing the first direction b, and the second action end 113g is configured to toggle the trigger 201g from the second gear position to the first gear position when the first movable member 11g moves away from the first direction b, so that the power tool 1 switches from the second gear to the first gear. In some embodiments, the first action member 13g includes a first action member body 131, the positioning hole 1311a is formed on the first action member body ...

Claims

A hand-held electric tool for at least one of an electric screwdriver, an electric drill, and a tapping machine, the electric tool having an axial direction and a front-rear direction parallel to the axial direction, characterized in that: a first housing for being held by a user; a second housing at least partially nested in the first housing and being in sliding connection with the first housing and being retractable along the axial direction relative to the first housing; a driving mechanism at least partially accommodated in the second housing and having an output end for being connected with a tool bit and driving the tool bit to rotate; the driving mechanism and the second housing are configured to be synchronously retractable along the axial direction with the tool bit as a whole relative to the first housing. The power tool according to claim 1, wherein a first opening is formed at a front end of the first housing along the axial direction, and a second opening is formed at a front end of the second housing along the axial direction corresponding to the first opening. The power tool according to claim 2, wherein a third opening is formed at an end of the first housing along the axial direction away from the first opening, and when the second housing moves backward relative to the first housing, an end of the second housing away from the second opening is movable to outside the third opening. The direction in which the second housing moves backward relative to the first housing is consistent with the direction in which the tool bit retreats. [Rule 91 amendment 20.08.2025] The power tool of claim 3, wherein, The second housing extends along the axial direction, and a fourth opening is formed at an end of the second housing along the axial direction away from the second opening, and a display screen is fixedly connected at the fourth opening, and the display screen moves synchronously with the second housing. The power tool according to any one of claims 1 to 4, characterized in that The electric tool has a maximum stroke protection mode, in which the movement of the second housing relative to the first housing is unlocked, and when the tool bit feeds and the second housing moves forward relative to the first housing to a first specified position of the first housing, the driving mechanism interrupts the rotation transmission to the tool bit. The power tool according to claim 5, wherein The electric tool further comprises a first position sensor for detecting whether the second housing moves to the first specified position of the first housing, and when the second housing moves to the first specified position of the first housing, the first position sensor detects a signal and controls the driving mechanism to interrupt the rotation transmission to the tool bit. The power tool according to claim 6, characterized in that The first housing has a first surface, and the second housing has a second surface, and a first elastic member is arranged between the first surface and the second surface; When the second housing moves to the first specified position of the first housing, the first elastic member is compressed, and at this time, the distance between the second surface and the first surface is a, where a>0; The length of the first elastic member in a natural state is d, where d>a. The power tool according to claim 7, wherein When the second housing moves to the first specified position of the first housing, the second housing is configured to be in an un-abutment state with the first housing; When the second housing moves forward relative to the first housing from the first specified position to a second specified position of the first housing, the second housing is configured to be in an abutment state with the first housing, and the distance between the second surface and the first surface is b, where a>b and b>0; The length of the first elastic member when compressed to the limit is c, where c<b. The power tool according to any one of claims 1 to 8, characterized in that The first shell is provided with a first guide structure, the second shell is provided with a second guide structure matched with the first guide structure, and the second shell can move along the axial direction relative to the first shell through cooperation of the first guide structure and the second guide structure. The power tool according to claim 9, wherein The second guide structure is a protruding part protruding from the second shell, and the protruding part is provided with a guide hole; The first guide structure is a guide shaft, both ends of the guide shaft are connected with the first shell, and the guide shaft penetrates the guide hole so that the second shell is slidingly connected to the guide shaft. [Rule 91 amendment 20.08.2025] The power tool of claim 9, wherein, The second guide structure is a protruding part protruding from the second shell, and the protruding part includes a first protruding part and a second protruding part, and the first shell is outwardly expanded on both sides to accommodate the first protruding part and the second protruding part respectively. [Rule 91 amendment 20.08.2025] The power tool according to claim 10 or 11, characterized in that, A first elastic member is sleeved on the guide shaft, and the first elastic member is arranged on the front side of the protruding part, and when the second shell moves to a first specified position relative to the first shell, the first elastic member is configured to be in a compressed state. The power tool according to claim 12, wherein The second shell includes a second shell body, a protruding part and a reinforcing part, the protruding part is connected to the second shell body, and the reinforcing part is connected to the second shell body and the protruding part at both ends respectively. [Rule 91 amendment 20.08.2025] The power tool of claim 13, wherein, The reinforcing part is arranged obliquely to the axial direction. The power tool according to claim 14, wherein A second air inlet is formed in the reinforcing part, the second air inlet penetrates the second shell body, and the driving mechanism is arranged in the second shell body. The second shell body is further provided with a second air outlet, and the first shell is provided with a plurality of ventilation holes. The power tool according to claim 15, characterized in that The driving mechanism includes a motor, and a stator of the motor is arranged on the rear side of the second air inlet in the axial direction. The power tool according to any one of claims 1 to 16, characterized in that The electric tool further includes a second elastic member, and the second elastic member is used to generate a restoring force on the second shell when the second shell moves backward relative to the first shell. The power tool of claim 17, wherein A first accommodating cavity is defined in the reinforcing part, and the second elastic member is arranged in the first accommodating cavity, one end of the second elastic member is connected with the second shell, and the other end of the second elastic member is connected with the first shell, and when the second shell moves backward relative to the first shell, the second elastic member is stretched to generate a restoring force on the second shell. The power tool as set forth in any one of claims 1 to 18, characterized in that The electric tool body includes a depth sensing assembly, the depth sensing assembly includes a depth sensor, the depth sensor is arranged in the second shell, and the depth sensor is used to detect the real-time position of the second shell relative to the first shell. The power tool of claim 19, wherein The second shell is connected with a first circuit board, the depth sensing assembly further includes a first gear rotatably connected with the second shell, a rack meshingly connected with the first gear, and a magnet connected to the first gear; The rack is fixedly connected with an inner side wall of the first shell; The depth sensor is integrated on the first circuit board, and the magnet is arranged opposite to the depth sensor; When the second shell moves relative to the first shell, the rack drives the first gear to rotate and in turn drives the magnet to rotate, the depth sensor detects the signal change caused by the rotation of the magnet to detect the real-time position of the second shell relative to the first shell. The power tool of claim 20, wherein The first circuit board front side is further connected with a first position sensor, the first position sensor is used for detecting whether the second shell moves to a first specified position when the second shell moves forward relative to the first shell, when the second shell moves to the first specified position of the first shell relative to the first shell, the first position sensor detects a signal and controls the driving mechanism to interrupt rotation transmission to the tool bit. The power tool of claim 21, wherein The electric tool further comprises a control mainboard connected to the rear side of the second shell, and the driving mechanism comprises a motor electrically connected with the control mainboard, and the control mainboard is located at the rear side of the motor. The depth sensor and the first position sensor are electrically connected with the control mainboard through the first circuit board. The power tool according to any one of claims 1 to 22, characterized in that The second shell lower side extends to form a first wire channel, the first wire channel has a first through opening, and the electric wire of the first circuit board passes through the first wire channel and is connected with the control mainboard. The electric tool further comprises a battery seat connected to the bottom of the first shell, and the electric wire connected with the battery enters the first wire channel from the first through opening and is connected with the control mainboard. The power tool according to any one of claims 1 to 23, characterized in that The first shell extends to form a first shell side shell along the axial direction, the first shell side shell is provided with a fifth opening extending along the axial direction, the second shell is connected with an auxiliary protrusion, the auxiliary protrusion at least partially exposes the fifth opening, and the auxiliary protrusion is used for detachably connecting an auxiliary handle. The power tool according to any one of claims 1 to 24, characterized in that The first shell extends to form a first shell side shell along the axial direction, the first shell side shell is provided with a fifth opening extending along the axial direction, the second shell is provided with a sixth opening, the sixth opening is connected with a gear shifting mechanism, the gear shifting mechanism comprises a dialing structure, the dialing structure at least partially exposes the fifth opening and the sixth opening, and the dialing structure is used for adjusting the gear switching of the electric tool. The power tool according to any one of claims 1 to 25, characterized in that The gear shifting mechanism further comprises a second position sensor, the second position sensor is used for detecting the position of the first movable part, when the first movable part is located at the third position, the second position sensor can detect that the first movable part is located at the third position, and the second position sensor controls the change of the rotation speed or the torque of the motor output end. The power tool according to any one of claims 1 to 26, characterized in that The electric tool further comprises a locking structure, the locking structure comprises a second movable part, and the second movable part is used for locking or unlocking the movement of the second shell relative to the first shell. The power tool as claimed in claims 1 to 27, characterized in that The electric tool body further comprises a display assembly, the display assembly comprises a display screen fixedly connected with the second shell and arranged at the rear side of the control mainboard, and the display screen is used for displaying the real-time relative distance of the movement of the second shell relative to the first shell. The control mainboard is electrically connected with the display screen. The display screen is mounted at one end of the second shell provided with a fourth opening. The display assembly further comprises a reset button or a reset touch point arranged on the display screen, the reset button is electrically connected with the control mainboard, when a user presses the reset button or clicks the reset touch point, the control mainboard receives a reset signal and controls the real-time relative distance value displayed on the display screen to be 0. The power tool of claim 28, wherein When the user presses the zero-return button or clicks the zero-return touch point, the control mainboard receives the zero-return signal and sets the current position of the second shell relative to the first shell detected by the depth sensor as the 0-point position of the real-time relative distance. When the second shell moves relative to the first shell, the depth sensor detects the real-time position of the second shell relative to the first shell, and the control mainboard calculates the real-time relative distance of the second shell relative to the first shell based on the real-time position and the 0-point position and controls the display screen to display the real-time relative distance. The power tool of claim 29, wherein The power tool body further comprises a depth adjustment assembly, which comprises a depth adjustment knob arranged on the rear side of the second shell and a depth adjustment sensor, and the depth adjustment knob is used to adjust the target distance of the movement of the second shell relative to the first shell. The depth adjustment sensor is electrically connected with the control mainboard. When the depth adjustment knob rotates, the depth adjustment sensor detects the corresponding signal. After the control mainboard receives the signal sent by the depth adjustment sensor, the driving mechanism output end stops rotating when the real-time relative distance of the movement of the second shell relative to the first shell reaches the target distance. The power tool according to any one of claims 1 to 30, characterized in that The power tool body further comprises a torque adjustment assembly, which comprises a torque adjustment knob arranged on the rear side of the second shell and a torque adjustment sensor, and the torque adjustment knob is used to adjust the output torque of the driving mechanism output end. The torque adjustment sensor is electrically connected with the control mainboard. When the torque adjustment knob rotates, the torque adjustment sensor detects the corresponding signal. The control mainboard adjusts the output torque of the motor output end after receiving the signal sent by the torque adjustment sensor. [Rule 91 correction 20.08.2025] The power tool of any one of claims 1 to 31, wherein, The power tool further comprises a closed-loop control module, which is electrically connected with the control mainboard, and the closed-loop control module is used to detect the motor speed. [Rule 91 correction 20.08.2025] The power tool of any one of claims 1 to 32, wherein, The support frame is detachably connected to the power tool body, and the support frame forms a through channel. The power tool of claim 33, wherein The support frame comprises a connecting part and a supporting part connected with the connecting part. The connecting part comprises a first connecting structure, and the support frame is connected with the power tool body through the first connecting structure. The power tool of claim 34, wherein The supporting part is further provided with a reinforcing rib. The power tool of any one of claims 34 or 35, wherein The side of the supporting part away from the first shell is connected with a first supporting structure. [Rule 91 amendment 20.08.2025] The power tool of claim 36, wherein, The first supporting structure is a supporting surface structure, and the through channel penetrates the supporting surface structure. The power tool of claim 37, wherein The side of the supporting surface structure away from the first shell is connected with an anti-skid pad. [Rule 91 correction 20.08.2025] The power tool of any one of claims 34 to 38, wherein, The side of the supporting part away from the first shell is configured to be perpendicular to or at an angle to the axial direction of the tool bit. The power tool according to any one of claims 34 to 39, characterized in that The supporting part is detachably and telescopically connected to the connecting part. The power tool according to any one of claims 34 to 40, characterized in that The connecting part and the supporting part are detachably connected, the side wall of the connecting part is provided with at least one third positioning structure, the side wall of the supporting part is provided with at least one fourth positioning structure corresponding to the third positioning structure, and the supporting part is detachably connected to the connecting part through the cooperation of the third positioning structure and the fourth positioning structure. The power tool of claim 41, wherein The third positioning structures are arranged at intervals along the axial direction, and the fourth positioning structure can be connected with different positions of the third positioning structures to adjust the overall length of the support frame. The power tool as claimed in any one of claims 41 to 42, characterized in that The fourth positioning structure is spaced apart from the third positioning structure in the axial direction. The power tool according to any one of claims 41 to 43, characterized in that The side wall of the connecting portion is provided with first positioning protrusions, and the first positioning protrusions are spaced apart in the axial direction; the third positioning structure is a first positioning groove formed by the first positioning protrusions arranged adjacent in the axial direction; the fourth positioning structure is a second positioning protrusion provided on the side wall of the supporting portion, and the second positioning protrusions are spaced apart in the axial direction; and the second positioning groove is formed by the second positioning protrusions arranged adjacent in the axial direction. When the connecting portion is connected to the supporting portion, at least one first positioning protrusion is embedded in the second positioning groove, and at least one second positioning protrusion is embedded in the first positioning groove. The power tool of claim 44, wherein The side wall of the connecting portion includes a first connecting wall extending in the axial direction, and the side wall of the supporting portion includes a second connecting wall extending in the axial direction. First extension holes are formed between adjacent first connecting walls, and second extension holes are formed between adjacent second connecting walls. The first positioning protrusions are spaced apart in the axial direction of the first connecting wall. The second positioning protrusions are spaced apart in the axial direction of the second connecting wall. The power tool according to any one of claims 44 to 45, characterized in that The first positioning protrusions and the second positioning protrusions extend in the circumferential direction. One side of the first positioning protrusions in the axial direction is provided with a first limiting structure, and one side of the second positioning protrusions in the axial direction is provided with a second limiting structure matched with the first limiting structure, so that the rotation of the supporting portion relative to the connecting portion is limited. The power tool of claim 46, wherein The supporting portion has a dismounting direction of rotation around the circumferential direction; the first limiting structure is a first recess formed on the first positioning protrusion, so that a first slot opening of the first positioning groove in the dismounting direction is narrowed; the second limiting structure is a third protrusion formed in the axial direction of the second positioning protrusion; and when the supporting portion is connected to the connecting portion, the third protrusion can be embedded in the first recess. The power tool according to any one of claims 46 to 47, characterized in that The supporting portion has a mounting direction of rotation around the circumferential direction; one end of the first positioning groove in the mounting direction is provided with a first stop structure; when the supporting portion rotates relative to the connecting portion in the mounting direction, the second positioning protrusion is stopped by the first stop structure, thereby limiting the rotation of the supporting portion; and / or one end of the second positioning groove away from the mounting direction is provided with a second stop structure; when the supporting portion rotates in the mounting direction, the first positioning protrusion is stopped by the second stop structure, thereby limiting the rotation of the supporting portion. The power tool of claim 48, wherein The first stop structure is a first protrusion strip protruding in the radial direction of the connecting portion, and the first protrusion strip extends in the axial direction. and / or the second stop structure is a second protrusion strip protruding in the radial direction of the supporting portion, and the second protrusion strip extends in the axial direction. The power tool according to any one of claims 44 to 49, characterized in that The supporting portion has a mounting direction of rotation around the circumferential direction; one end of the first positioning protrusion in the mounting direction is a pointed structure, and one end of the second positioning protrusion away from the mounting direction is a pointed structure. The power tool according to any one of claims 44 to 50, characterized in that The distance between adjacent first positioning protrusions is 1 cm; and when the supporting portion is sleeved on the connecting portion, the first connecting wall and the second connecting wall are in interference fit. The power tool according to any one of claims 41 to 51, characterized in that The length of the support frame is configured such that when the tap head and the support frame are mounted on the power tool, an end of the support frame away from the first housing is located at the threaded section of the tap head. The power tool of claim 42, wherein The connecting portion is integrally connected with the supporting portion; the supporting portion is a supporting leg, and the supporting leg is provided with at least one. The power tool according to any one of claims 1 to 53, characterized in that The power tool further comprises a second movable member, which is rotationally connected with the first housing and used for locking or unlocking the movement of the second housing relative to the first housing in the axial direction. The power tool of claim 54, wherein The second movable member is rotationally connected with the front side of the first housing, and the second movable member comprises a first protruding portion, and the second housing comprises a first locking protrusion corresponding to the first protruding portion; In the locked state, at least part of the first protruding portion is configured to be arranged opposite to at least part of the first locking protrusion in the axial direction and located at the rear side of the first locking protrusion, and the movement of the second housing relative to the first housing towards the rear is locked; The front-rear direction is parallel to the axial direction. The power tool of claim 55, wherein The first protruding portion is provided with a fourth guide surface on one side in the axial direction, and the first locking protrusion is provided with a third guide surface corresponding to the fourth guide surface; When the second movable member rotates in the direction of locking the first locking protrusion, at least part of the fourth guide surface can abut against at least part of the third guide surface. [Rule 91 amendment 20.08.2025] The power tool of claim 56, wherein, The first protruding portion is spaced apart along the circumferential direction and provided with n first protruding portions, and n is greater than or equal to 2, and the first locking protrusion is correspondingly spaced apart along the circumferential direction and provided with n first locking protrusions; In the unlocked state, the first protruding portion is configured to be arranged in dislocation with the first locking protrusion in the axial direction. The power tool of claim 57, wherein The second movable member comprises a force receiving member protruding from the outer surface of the second movable member body, and the first housing is correspondingly provided with a first notch for exposing the force receiving member, and the first notch is arranged to extend along the circumferential direction and the force receiving member can move in the first notch. The power tool of claim 58, wherein The first housing defines a receiving cavity for accommodating the second movable member body, and the second movable member body is arranged in the receiving cavity to be hidden in the first housing, and the first notch is in communication with the receiving cavity; The first housing further defines a guide groove in communication with the receiving cavity, and the second movable member body is provided with a first guide protrusion extending along the circumferential direction, and the first guide protrusion is inserted into the guide groove. The power tool according to any one of claims 54 to 59, characterized in that The second housing comprises a second housing body and an auxiliary housing connected with the second housing body, the second housing body extends along the axial direction, the driving mechanism is at least partially accommodated in the second housing body, the second housing body and the auxiliary housing are arranged separately, and the first locking protrusion is formed on the outer surface of the auxiliary housing; The second housing body is provided with a second notch, and the auxiliary housing is provided with an auxiliary protrusion corresponding to the second notch, and the auxiliary protrusion is used for connecting the auxiliary handle. The power tool according to any one of claims 54 to 60, characterized in that The second movable part is further provided with a first detection position, the second shell is fixedly connected with a control mainboard and a first position sensor electrically connected with the control mainboard, when the second shell is in the unlocked state and moves to a first specified position relative to the first shell in the axial direction, the first position sensor can detect a signal that the second movable part is in a fifth specified position and the second shell is in the first specified position through the first detection position, and the control mainboard controls the driving mechanism to stop rotating according to the signal that the second movable part is in the fifth specified position and the second shell is in the first specified position. The power tool according to any one of claims 54 to 61, characterized in that The electric tool further comprises a support frame, the support frame is formed with a through channel, and the support frame is selectively connected to one end of the first shell where the second movable part is connected; The second movable part further comprises a second protruding part protruding from the second movable part body; The support frame comprises a second locking protrusion corresponding to the second protruding part, when the support frame is connected to the first shell and the support frame is in the locked state, at least part of the second locking protrusion and at least part of the second protruding part are arranged opposite to each other in the axial direction and the second protruding part is located in front of the second locking protrusion, the movement of the support frame relative to the first shell towards the front is locked, and the first protruding part and the first locking protrusion are arranged staggered in the axial direction, the movement of the second shell relative to the first shell towards the rear is unlocked; When the support frame is in the unlocked state, the second protruding part and the second locking protrusion are arranged staggered in the axial direction, at least part of the first protruding part and at least part of the first locking protrusion are arranged opposite to each other, and the movement of the second shell relative to the first shell towards the rear is locked; The first protruding part and the second protruding part are arranged on the same side of the radial direction of the second movable part body. The power tool according to any one of claims 54 to 62, characterized in that The first mounting position is formed between the second movable part body and the second shell, and the second mounting position is formed between the second movable part body and the first shell, one end of the support frame towards the first shell comprises a first plug-in part and a second plug-in part, a first accommodating position is formed between the first plug-in part and the second plug-in part, the second locking protrusion is arranged on the first plug-in part, a second limiting part is further formed on the rear side of the second locking protrusion of the first plug-in part, a second locking position is formed between the second limiting part and the first plug-in part, a second mounting opening is further defined on the front side of the first shell, the first plug-in part is at least partially inserted into the first mounting position, the second plug-in part is at least partially inserted into the second mounting position, and the second movable part body is partially located in the first accommodating position through the second mounting opening; and when the support frame is in the locked state, the second protruding part is located in the second locking position. [Rule 91 correction 20.08.2025] A gear shifting mechanism applied to a power tool, characterized in that: The electric tool further comprises a shell, a speed reducer arranged in the shell, and a motor arranged in the shell and in transmission connection with the speed reducer; The gear shifting mechanism is arranged in the shell, and comprises a first movable part, a shifting structure, and a first action part, The first movable element is movably arranged in the housing, the knob structure is connected with the first movable element, and the knob structure is configured to be capable of driving the first movable element to move relative to the housing along a first direction under force, the first action element is arranged on a side of the first movable element away from the knob structure, and the first action element is configured to be capable of being driven to move by the first movable element when the knob structure drives the first movable element to move relative to the housing along the first direction; The speed reducer comprises a trigger element, and when the first movable element drives the first action element to move along the first direction, the first action element can drive the trigger element to in turn enable the electric tool to be switched from a first gear to a second gear; The gear shifting mechanism further comprises a detection assembly arranged in the housing and electrically connected with the motor, When the first movable element moves to a third position along the first direction, the detection assembly can detect a signal that the first movable element is located at the third position and adjust an output mode of the motor according to the signal that the first movable element is located at the third position to enable the electric tool to be switched from the second gear to a third gear. The first direction is parallel to an axial direction of the housing. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 64, wherein, The first action element is in sliding connection with the housing, and the first movable element is connectable with or separable from the first action element; When the first movable element is connected with the first action element, the first movable element can drive the first action element to move to in turn enable the electric tool to be switched from the first gear to the second gear; After the first movable element is separated from the first action element, the first movable element can continue to move to the third position along the first direction. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 65, wherein: The gear shifting mechanism further comprises a separation structure arranged in the first movable element or the first action element, and the first separation structure is used to separate the first action element from the first movable element in a direction away from the knob structure. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 66, wherein: The separation structure is a seventh guide surface formed on the first movable element, and the seventh guide surface is configured to be capable of being moved by the first action element relative to the first movable element along the seventh guide surface until the first action element is separated from the first movable element. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 66, wherein: The first movable element further comprises a first body and a first positioning structure, the first body is connected with the knob structure, and the first positioning structure is arranged on a side of the first body away from the knob structure; The first action element comprises a second positioning structure corresponding to the first positioning structure, the first action element can be sleeved on the first positioning structure through the second positioning structure to enable the first action element to be connected to the side of the first body away from the knob structure, and one of the first positioning structure and the second positioning structure is a third positioning protrusion, and the other is a positioning hole. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 68, wherein: The separation structure is a seventh guide surface formed on the first movable element, the first positioning structure is a third positioning protrusion, the second positioning structure is a positioning hole, and the seventh guide surface is formed at one end of the third positioning protrusion in the first direction. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 69, wherein: The seventh guide surface has a first edge intersecting the first body and a second edge disposed on a side of the first edge away from the dial structure, and the second edge is disposed on a side of the first edge away from the first direction; The hole wall of the positioning hole is movable along the seventh guide surface relative to the first movable element until the hole wall of the positioning hole is disengaged from the second edge, and the first movable element is separated from the first movable element; The hole wall of the positioning hole is disposed opposite the seventh guide surface when the first movable element is sleeved on the first movable element. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 69, wherein: The third positioning protrusion includes a fourth protruding portion continuously extending along the first direction and connected to the first body; The positioning hole includes a first hole matching the shape of the fourth protruding portion. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 71, wherein: The third positioning protrusion further includes a fifth protruding portion connected perpendicularly to the fourth protruding portion, the fifth protruding portion is disposed on a side of the fourth protruding portion facing the first direction, and a length of the fifth protruding portion in a direction perpendicular to the first direction is greater than a length of the fourth protruding portion in the direction perpendicular to the first direction; The seventh guide surface is formed on a side of the fifth protruding portion facing the first direction; The positioning hole further includes a second hole communicating with the first hole, the second hole matching the shape of the fifth protruding portion, The hole wall of the second hole is disposed opposite the seventh guide surface when the first movable element is sleeved on the first movable element. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 65, wherein: The first movable element includes a first action end protruding on a side facing the trigger and away from the first movable element, and the first movable element dials the trigger through the first action end to switch from the first gear to the second gear; The gear shifting mechanism further includes a second action end disposed toward the trigger, the second action end is disposed on a side of the first action end facing the first direction, and the second action end is configured to dial the trigger when the first movable element moves in a direction away from the first direction, so that the electric tool switches from the second gear to the first gear. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 73, wherein: A second accommodation position is defined between the first action end and the second action end, the trigger is located in the second accommodation position when the trigger is located in a gear position of the speed reducer; and The first action end has a first distance from the trigger; The second action end has a second distance from the trigger; The first distance is equal to the second distance. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 73, wherein: The first movable element further includes a first body connected to the dial structure and a first positioning structure disposed on a side of the first body away from the dial structure; The first movable element includes a second positioning structure corresponding to the first positioning structure, the first movable element can be sleeved on the first positioning structure through the second positioning structure, so that the first movable element can be connected to a side of the first body away from the dial structure, one of the first positioning structure and the second positioning structure is a third positioning protrusion, and the other is a positioning hole; The first positioning structure is a third positioning protrusion, the second action end is connected to a side of the first body away from the knob structure, and the second action end is exposed from the positioning hole when the first action member is sleeved on the first movable member or the second action end is protruded from a side of the first action member away from the first body. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 65, wherein: The inner side wall of the shell is provided with a first sliding section, The first sliding section extends in a first direction; When the first movable member drives the first action member to move, the first action member can be inserted into the first sliding section and slide along the first sliding section relative to the shell. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 76, wherein: The inner side wall of the shell is further provided with a second sliding section, The second sliding section is arranged on a side of the first sliding section facing the first direction and a side of the first sliding section away from the knob structure; the first action member can be inserted into the second sliding section, and the first action member can be moved from the first sliding section to the second sliding section, so that the first action member is separated from the first movable member. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 77, wherein: The second sliding section and the first sliding section are obliquely intersected; The second sliding section is configured to enable the first movable member to drive the first action member to move along the second sliding section relative to the first movable member when the first movable member moves away from the first direction, until the first action member is located in the first sliding section. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 78, wherein: The second sliding section is a second sliding groove, the second sliding groove is provided with an eighth guide surface, the first sliding section is a first sliding groove, the first sliding groove is provided with a third gap, the first sliding groove and the second sliding groove are communicated, and the first action member can slide from the second sliding groove to the first sliding groove through the third gap, The eighth guide surface and the first sliding groove wall are obliquely intersected and arranged, and the second sliding section guides the first action member through the eighth guide surface. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 78, wherein: The first movable member further includes a first body and a first positioning structure, the first body is connected with the knob structure, and the first positioning structure is arranged on a side of the first body away from the knob structure; The first action member includes a second positioning structure corresponding to the first positioning structure, the first action member can be sleeved on the first positioning structure through the second positioning structure, so that the first action member can be connected to a side of the first body away from the knob structure, one of the first positioning structure and the second positioning structure is a third positioning protrusion, and the other is a positioning hole; The first action member includes a guide protrusion, and the first action member can be inserted into the first sliding groove or the second sliding groove through the guide protrusion; The first positioning structure is a third positioning protrusion, and the thickness of the first positioning structure projected on the first sliding groove is H1; The thickness of the guide protrusion projected on the first sliding groove is H2; The thickness of the first sliding groove is H3, and H3 [Rule 91 amendment 20.08.2025] The filing mechanism of claim 78, wherein: The first movable member further includes a homing part, the homing part is arranged on a side of the first movable member away from the knob structure, and the first movable member drives the first action member to move along the second sliding section relative to the first movable member through the homing part, until the first action member is located in the first sliding section. [Rule 91 correction 20.08.2025] The filing mechanism of claim 81, wherein: The first movable member further includes a first body and a first positioning structure, the first body is connected with the knob structure, and the first positioning structure is arranged on a side of the first body away from the knob structure; The first action member comprises a second positioning structure corresponding to the first positioning structure, the first action member is sleeved with the second positioning structure on the first positioning structure so that the first action member can be connected to the first body on the side away from the dial structure, one of the first positioning structure and the second positioning structure is a third positioning protrusion, and the other is a positioning hole; The first positioning structure is the third positioning protrusion, and the positioning space is defined between the homing part and the third positioning protrusion; When the positioning hole is sleeved on the third positioning protrusion, part of the first action member is located in the positioning space. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 64, wherein: The gear shifting mechanism further comprises a fifth elastic member, a first accommodating groove is formed on the side of the first movable member away from the dial structure, and a connecting groove is arranged on the groove wall of the first accommodating groove and faces the inner wall of the side of the shell; The inner side wall of the shell is provided with a plurality of third positioning grooves, and the third positioning grooves are arranged at intervals along the first direction; The fifth elastic member is partially accommodated in the first accommodating groove, the fifth elastic member partially extends out of the groove wall of the first accommodating groove through the connecting groove and elastically abuts against the inner side wall of the shell; When the first movable member slides in the shell, the extended part of the fifth elastic member moves along the first direction and can fall into the third positioning grooves in sequence. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 65, wherein: The first movable member further comprises a sliding foot protruding towards the inner wall of the shell, the sliding foot is in sliding connection with the inner wall of the shell, and the first movable member is provided with a first limiting surface, when the first movable member moves relative to the first action member along the first direction after being separated from the first action member, the first limiting surface can limit the movement of the first movable member through the sliding foot. [Rule 91 amendment 20.08.2025] The filing mechanism of claim 64, wherein: The side of the shell facing the first direction is further connected with a control mainboard, the detection assembly comprises a second position sensor in electrical connection with the control mainboard, the second position sensor is connected to the side of the shell facing the first direction, and when the first movable member moves to the third position, the second position sensor detects the third position of the first movable member. [Rule 91 amendment 20.08.2025] An electric power tool characterized by, The electric tool comprises a shell and the gear shifting mechanism according to any one of claims 64 to 85, and the gear shifting mechanism is arranged in the shell. [Rule 91 correction 20.08.2025] A control method applied to the power tool according to any one of claims 1 to 86, characterized in that, The electric tool comprises a display screen, and the control method comprises: A return-to-zero signal is received, and the return-to-zero signal is used to display the real-time relative distance value as 0 on the display screen; In response to the return-to-zero signal, the display screen is controlled to display the real-time relative distance value as 0. [Rule 91 correction 20.08.2025] The control method of claim 87, wherein, The electric tool further comprises a depth sensor for detecting the real-time position of the second shell relative to the first shell; The control method further comprises: receiving a return-to-zero signal, and in response to the return-to-zero signal and setting the current position detected by the depth sensor as the 0-point position of the real-time relative distance; The real-time position sent by the depth sensor is received, and the real-time relative distance is calculated according to the real-time position and the 0-point position; The display screen is controlled to display the real-time relative distance. [Rule 91 correction 20.08.2025] The control method of claim 88, wherein, The depth sensor is used to detect whether the second shell reaches the first specified position relative to the first shell. The control method further comprises: when the second shell moves to the first specified position relative to the first shell, the mainboard acquires the position signal sent by the depth sensor and controls the motor to stop rotating. [Rule 91 correction 20.08.2025] The control method according to any one of claims 87 to 89, characterized in that, The electric tool further comprises a first position sensor for detecting whether the second shell reaches the first specified position relative to the first shell. The control method further comprises: when the second shell moves to the first specified position relative to the first shell, the mainboard acquires the position signal sent by the first position sensor and controls the motor to stop rotating. [Rule 91 correction 20.08.2025] The control method of claim 90, wherein, The electric tool further comprises a first position sensor for detecting whether the second shell reaches the first specified position relative to the first shell and whether the second movable part reaches the fifth specified position. The control method further comprises: when the second shell moves to the first specified position relative to the first shell and the second movable part reaches the fifth specified position, the mainboard acquires the position signal sent by the first position sensor and controls the motor to stop rotating. [Rule 91 correction 20.08.2025] The control method according to any one of claims 88 to 91, characterized in that, The control method further comprises: receiving a depth adjustment signal for adjusting the target distance of the movement of the second shell relative to the first shell; and in response to the depth adjustment signal, controlling the motor to stop rotating after the movement distance of the second shell relative to the first shell reaches the target distance. The control method further comprises: in response to the depth adjustment signal, the step of controlling the motor to stop rotating after the second shell moves to the target distance relative to the first shell comprises the following steps: Receiving a zeroing signal, in response to the zeroing signal and setting the current position detected by the depth sensor as the 0 point position of the real-time relative distance, receiving the real-time position sent by the depth sensor, calculating the real-time relative distance according to the real-time position and the 0 point position, and controlling the motor to stop rotating and controlling the display screen to display the real-time relative distance when the real-time relative distance reaches the target distance error range. The display screen further comprises a first range area provided with a scale for displaying the target distance. [Rule 91 amendment 20.08.2025] The control method of claim 92, wherein, The control method further comprises: when detecting the depth adjustment signal operated in the first range area, controlling the third position of the display screen to highlight the first color. The display screen further comprises a second range area; the control method further comprises: detecting a third operation for closing the function of adjusting the target distance of the second shell relative to the first shell; [Rule 91 correction 20.08.2025] The control method according to any one of claims 87 to 93, characterized in that, Controlling the second position of the display screen to highlight the second color, the third position and the second position being at the same position or the second position and the third position being at different positions; The third operation is operated in the second range area. [Rule 91 amendment 20.08.2025] The control method of claim 94, wherein, The control method further comprises: when the motor speed is read to be small, controlling the current to be large so that the motor speed is increased. The control method comprises three function modes, including: electric screwdriver mode, drilling mode and tapping mode. The control method further comprises: when detecting a gear adjustment operation, controlling the motor to adjust to the corresponding function mode. [Rule 91 correction 20.08.2025] The control method according to any one of claims 87 to 95, characterized in that, The electric tool further comprises a display screen and a zeroing button for making the display screen display the real-time relative distance value as 0; the use method comprises the following steps: [Rule 91 correction 20.08.2025] The control method according to any one of claims 87 to 96, characterized in that, ​ ​ [Rule 91 correction 20.08.2025] A method of use, applied to the power tool of any one of claims 1 to 86, characterized in that, ​ Hold the power tool and put the support frame on the machining surface; press the reset button to make the display screen display the real-time relative distance value as 0; press the operation key to start the motor; With the movement of the tool head, the real-time relative distance is displayed on the display screen, and the motor stops rotating when the operation key is released. [Rule 91 amendment 20.08.2025] The method of use of claim 98, wherein, After the step of pressing the operation key to start the motor, the first housing is further provided with a scale, and the method further comprises the following steps: with the movement of the tool head, when the second housing moves to the corresponding scale, the operation key is released, and the motor stops rotating. [Rule 91 correction 20.08.2025] The method of use of any one of claims 98 to 99, wherein, The power tool further comprises a depth adjustment member, and the depth adjustment member is used to adjust the target distance of the movement of the second housing relative to the first housing. The use method comprises the following steps: adjusting the depth adjustment member to adjust the target distance of the movement of the second housing relative to the first housing. Press the operation key to start the motor, the second housing moves to the target distance relative to the first housing, the motor stops rotating, and the display screen displays the real-time relative distance. [Rule 91 amendment 20.08.2025] An electric power tool characterized by, Comprise: The main body mechanism comprises a housing, a driving mechanism is arranged in the housing, a fourth groove is arranged on a first surface of the housing, and the fourth groove is used to place a first tool accessory; the driving mechanism is used to drive the movement of the first tool accessory; The first component is spliced with the housing, and the first component comprises a first channel; wherein the first tool accessory can move in the first channel; when the first tool accessory contacts the workpiece surface, the first force applied by the user on the housing acts on the housing, and the housing and the first component move in the axial direction of the housing to make the first component contact the workpiece surface. [Rule 91 amendment 20.08.2025] The power tool of claim 101, wherein, When the first component contacts the workpiece surface, the first tool accessory is perpendicular to the workpiece surface. [According to Rule 91 correction 20.08.2025] The power tool of claim 101 or 102, wherein, When the first tool accessory processes the workpiece, the housing and the first component are relatively static with the workpiece surface, and the first component contacts the initial plane of the workpiece; the second force and / or the third force act on the driving mechanism, and the driving mechanism and the first tool accessory move in the axial direction of the housing; The second force is the force generated by the second component in the driving mechanism, and the third force is the force applied by the user on the third component in the main body structure. [Rule 91 amendment 20.08.2025] The power tool of claim 103, wherein, When the first tool accessory reaches the target processing depth of the workpiece, the driving mechanism and the first tool accessory stop moving. [According to Rule 91 correction 20.08.2025] The power tool of any one of claims 101-104, wherein, When the first tool accessory finishes processing the workpiece, the driving mechanism and the first tool accessory move in the axial direction of the housing. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-105, wherein, The main body mechanism further comprises a depth sensor, and the depth sensor is used to obtain the depth of the processing of the workpiece by the first tool accessory. [Rule 91 amendment 20.08.2025] The power tool of claim 106, wherein, When the first tool accessory is replaced by a second tool accessory or the initial plane of the processing of the workpiece changes, the depth obtained by the depth sensor is initialized to a first value. [Rule 91 correction 20.08.2025] The electric power tool according to any one of claims 101-107, wherein the first component comprises a support structure, the support structure comprising N points of the first component in contact with a workpiece surface. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-108, wherein, The first component has a telescopic structure, which is arranged in the support structure, or the first component further comprises a first structure, which is connected with the support structure to form the telescopic structure. [Rule 91 amendment 20.08.2025] The power tool of claim 109, wherein, The relative angle between the first structure and the support structure is adjustable. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-110, wherein, The side surface of the first component is made of transparent material or non-transparent material. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-111, wherein, The first surface of the first component in contact with the workpiece surface is provided with an anti-skid rubber pad. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-112, wherein, The side surface of the first component is any one of a closed structure, an open-closed structure, or an open structure. [Rule 91 correction 20.08.2025] The electric power tool according to any one of claims 101-103, wherein The first surface of the housing is provided with a magnet, and the first component is spliced with the housing, comprising: the first component is spliced with the housing through the magnet; and / or The first surface of the housing is provided with a buckle structure, and the first component is spliced with the housing, comprising: the first component is spliced with the housing through the buckle structure. [Rule 91 amendment 20.08.2025] The power tool according to claim 103 or 104, characterized in that, The second component is an elastic member, and the second force is the elastic force generated by the elastic member; wherein the elastic member comprises a spring or a magnetic elastic member. [Rule 91 correction 20.08.2025] The power tool of claim 115, wherein, The driving mechanism further comprises at least two tracks, and each track is provided with the elastic member. [Rule 91 correction 20.08.2025] The power tool of claim 115 or 116, wherein, When the elastic member comprises a spring, the spring forms the second force under the compression of the driving mechanism and the housing. [Rule 91 correction 20.08.2025] The power tool of claim 115 or 117, wherein, When the elastic member comprises a magnetic elastic member, the driving mechanism further comprises an electromagnetic coil, and the damping and stiffness of the magnetic elastic member change with the magnetic field strength formed by the electromagnetic coil to form the second force. [Rule 91 amendment 20.08.2025] The power tool according to claim 103 or 104, characterized in that, The third component is connected with the driving mechanism, or the third component is arranged independently of the driving mechanism in the main body mechanism. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-119, wherein, The housing is provided with a first control element for adjusting the working parameter of the electric power tool. The working parameter comprises at least one of the following: the rotational speed of the first tool accessory, the predetermined depth of the first tool accessory on the workpiece, the direction of the first tool accessory on the workpiece, or the torque of the motor in the driving mechanism. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-120, wherein, The housing is further provided with a second control element for adjusting the function mode of the electric power tool, and the function mode comprises at least one of the tapping machine mode, the electric screwdriver mode, or the electric drill mode. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-121, wherein, The housing is further provided with a second recess for placing a third tool accessory. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-122, wherein, The electric power tool further comprises a human-computer interaction assembly, which is used to: receive a first user instruction for adjusting the working parameter of the electric power tool; The working parameter comprises at least one of a rotating speed of the first tool accessory, a predetermined depth of workpiece machining by the first tool accessory, a direction of workpiece machining by the first tool accessory, or a torque of a motor in the driving mechanism. [Rule 91 amendment 20.08.2025] The power tool of claim 123, wherein, The human-computer interaction component is further configured to: receive a second user instruction for adjusting a function mode of the electric tool. The function mode comprises at least one of a tapping machine mode, an electric screwdriver mode, or an electric drill mode. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-124, wherein, The shell is provided with a display screen. [Rule 91 correction 20.08.2025] The power tool of any one of claims 101-125, wherein, The electric tool stops working when the user does not touch the electric tool. [Rule 91 amendment 20.08.2025] The power tool of claim 126, wherein, The electric tool further comprises a controller configured to control the opening and closing structure to form an opening or a closed opening when the side of the first component is in an opening and closing structure. [Rule 91 amendment 20.08.2025] A control method, characterized by, The application is applied to an electric tool, which comprises a main body mechanism and a first component; the main body mechanism comprises a shell, the first component is spliced with the shell, the shell is provided with a driving mechanism, the shell is provided with a fourth groove for placing a first tool accessory, and the driving mechanism is configured to drive the first tool accessory to move; the first component comprises a first channel, and the first tool accessory can move in the first channel; when the first tool accessory contacts a workpiece surface, a first force applied by a user on the shell acts on the shell, and the shell and the first component move in the axial direction of the shell to make the first component contact the workpiece surface; the method comprises: receiving a first user instruction for adjusting a working parameter of the electric tool; adjusting the working parameter of the electric tool in response to the first user instruction; The working parameter comprises at least one of a rotating speed of the first tool accessory, a predetermined depth of workpiece machining by the first tool accessory, a direction of workpiece machining by the first tool accessory, or a torque of a motor in the driving mechanism. [Rule 91 correction 20.08.2025] The method of claim 128, wherein, The method further comprises: receiving a second user instruction for adjusting a function mode of the electric tool; adjusting the function mode of the electric tool in response to the second user instruction; The function mode comprises at least one of a tapping machine mode, an electric screwdriver mode, or an electric drill mode. [Rule 91 correction 20.08.2025] The method of claim 128 or 129, characterized in that, The electric tool further comprises a depth sensor; the method further comprises: controlling a prompt device to output first information, the first information being a depth of workpiece machining by the first tool accessory detected by the depth sensor. [Rule 91 correction 20.08.2025] The method of claim 130, wherein, The method further comprises: adjusting a predetermined depth and / or machining direction of workpiece machining by the first tool accessory according to the depth of workpiece machining by the first tool accessory detected by the depth sensor. [Rule 91 correction 20.08.2025] The method of any one of claims 128-131, wherein, The method further comprises: controlling a prompt device to output second information, the second information comprising at least one of: power information of the electric tool, charging prompt information of the electric tool, or work information of the electric tool. [Rule 91 amendment 20.08.2025] A computer-readable storage medium, characterized by, The computer readable storage medium includes a computer program which, when running on the electronic device, causes the electronic device to perform the method of any one of claims 128 to 132.

Images