Electric tool

Abstract

The invention discloses an electric tool. The electric tool comprises a main body structure and a tool bit structure, wherein the main body structure comprises a driving piece and a mounting piece connected with the driving piece; the tool bit structure comprises a locking assembly used for connecting the mounting part and the machining part, the locking assembly can be driven to be switched between a first angle position and a second angle position, when the locking assembly is located at the first angle position, relative movement of the machining part and the mounting part is limited, and when the locking assembly is located at the second angle position, limitation of the relative movement of the machining part and the mounting part is relieved; the electric tool further comprises an installation base, the installation base is fixedly connected with the locking assembly, and the installation base is driven to drive the locking assembly to rotate synchronously so that the locking assembly can be switched from the first angle position to the second angle position. And an operator rotates the mounting seat to easily release the connection between the machined part and the mounting part, so that the convenience and the efficiency of replacing the machined part are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of electric tools. Background Art

[0002] Power tools often consist of a driving component, a mounting component, and a processing component. The processing component is connected to the driving component via the mounting component and is driven by the mounting component to rotate or move to process the object being processed. For example, in the case of a reciprocating saw, the mounting component is the reciprocating rod, and the processing component is the saw blade. The reciprocating motion of the saw blade performs sawing. Alternatively, the power tool can be a grinder, with the mounting component being the rotating head and the processing component being the grinding disc.

[0003] Workpieces are often easily worn, or workpieces of different specifications must be selected for different objects to be processed. Therefore, during the construction process, the workpieces often need to be replaced. In the prior art, the replacement of workpieces is relatively cumbersome. For example, in a reciprocating saw, the reciprocating saw also includes a mounting seat for abutting the object to be cut. The workpiece is inserted through the mounting seat and extends into the housing of the cutter head structure to connect with the mounting member. When replacing the workpiece, the operator needs to bypass the mounting seat and reach into the housing to disconnect the workpiece and the mounting member. The mounting seat blocks the disassembly and assembly of the workpiece, limiting the operator's operating space. Replacing the workpiece is relatively inconvenient and the replacement efficiency is low. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a power tool that allows an operator to easily disconnect a workpiece from a mounting member by rotating a mounting base, significantly improving the convenience and efficiency of workpiece replacement.

[0005] According to a first embodiment of the present invention, an electric tool includes:

[0006] A main structure, comprising a driving member and a mounting member connected to the driving member;

[0007] a tool head structure, the tool head structure including a locking assembly for connecting a mounting member and / or a processing member, the locking assembly being driven to switch between a first angular position and a second angular position, wherein in the first angular position, relative movement of the processing member and the mounting member is restricted, and in the second angular position, the restriction on relative movement of the processing member and the mounting member is released;

[0008] The electric tool further comprises a mounting base, which is fixedly connected to the locking assembly. The mounting base is driven to drive the locking assembly to rotate synchronously so as to switch the locking assembly from the first angular position to the second angular position.

[0009] The electric tool according to the embodiment of the present invention has at least the following beneficial effects:

[0010] In this application, the mounting base is fixedly connected to the locking assembly, so that the mounting base is driven to synchronously rotate the locking assembly, thereby switching the locking assembly from a first angular position to a second angular position. Therefore, when replacing a workpiece, the operator can easily disconnect the workpiece from the mounting member by simply rotating the mounting base, avoiding the tedious operation of bypassing the mounting base and significantly improving the convenience and efficiency of workpiece replacement.

[0011] According to some embodiments of the present invention, the locking assembly includes a first rotating member and a second rotating member, wherein the first rotating member is partially or entirely disposed through the second rotating member, the first rotating member and the second rotating member are capable of synchronous rotation, and the first rotating member is capable of axial movement relative to the second rotating member;

[0012] Wherein, the mounting seat is connected to the second rotating member.

[0013] According to some embodiments of the present invention, the mounting seat includes a supporting portion and an extending portion, and two ends of the extending portion are respectively connected to the supporting portion and the second rotating member.

[0014] According to some embodiments of the present invention, either one of the outer circumference of the first rotating member and the inner circumference of the second rotating member is provided with an inserting protrusion, and the other is provided with an inserting groove, and the inserting protrusion is embedded in the inserting groove, so that the first rotating member and the second rotating member can rotate synchronously.

[0015] According to some embodiments of the present invention, the locking assembly is defined by a first mounting hole for the workpiece to pass through, and the hole wall of the first mounting hole is provided with a first accommodating groove. The locking assembly also includes a first limiting member located in the first mounting hole. When the locking assembly is in a first angular position, the first limiting member is passed through the mounting member and abuts against the workpiece. When the locking assembly is in the second angular position, the first limiting member moves into the first accommodating groove to disengage the first limiting member from the workpiece.

[0016] According to some embodiments of the present invention, the processing member has a second accommodating groove, and when the locking assembly is in the first angular position, the first limiting member is inserted into the second accommodating groove; when the locking assembly is in the second angular position, the first limiting member exits the second accommodating groove;

[0017] Wherein, the second accommodating groove is provided on at least one side of the workpiece along its width direction.

[0018] According to some embodiments of the present invention, the cutter head structure further comprises a first housing for accommodating the locking assembly, wherein either the locking assembly or the first housing is provided with a positioning protrusion, and the other is provided with a positioning slot, and the positioning protrusion moves in the positioning slot as the locking assembly rotates;

[0019] When the locking assembly is at the first angular position, the positioning protrusion is at one end of the positioning slot; when the locking assembly is at the second angular position, the positioning protrusion is at the other end of the positioning slot.

[0020] According to some embodiments of the present invention, the cutter head structure also includes a first elastic member, one end of which is connected to the locking assembly, and the other end is connected to the mounting member, and the first elastic member is configured such that: when the locking assembly is switched from the first angular position to the second angular position, the first elastic member undergoes elastic deformation and has a tendency to drive the locking assembly to switch back to the first angular position.

[0021] According to some embodiments of the present invention, the power tool further includes an unlocking assembly, which has a first state and a second state. In the first state, the unlocking assembly is connected to the locking assembly, and the rotation of the locking assembly is restricted so that the locking assembly remains in the first angular position; in the second state, the rotation restriction of the locking assembly is released so that the locking assembly can rotate to the second angular position.

[0022] According to some embodiments of the present invention, the locking assembly includes an abutting protrusion, the unlocking assembly includes a second limiting member and an unlocking button, the second limiting member includes a first end, a second end, and a rotating shaft located between the first end and the second end, in the first state, the first end abuts against the abutting protrusion; the unlocking button is connected to the second end;

[0023] Wherein, when the unlocking button is pressed, the first end rotates around the rotating shaft and disengages from the abutting protrusion, so that the unlocking component switches from the first state to the second state.

[0024] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0026] Figure 1 is a schematic structural diagram of an electric tool according to an embodiment of the present invention;

[0027] Figure 2 is a cross-sectional view of an electric tool according to an embodiment of the present invention;

[0028] Figure 3 An exploded schematic diagram of a cutter head structure according to an embodiment of the present invention;

[0029] Figure 4 An exploded schematic diagram of a mounting base and a locking assembly according to an embodiment of the present invention;

[0030] Figure 5 is a schematic diagram of a locking assembly according to an embodiment of the present invention viewed from front to back;

[0031] Figure 6 for Figure 5 Cross-sectional view along the BB direction;

[0032] Figure 7 is a schematic diagram of the second sub-housing according to an embodiment of the present invention viewed from the back to the front;

[0033] Figure 8 An exploded schematic diagram of the main structure of an embodiment of the present invention;

[0034] Figure 9 for Figure 2 A magnified schematic diagram of area A in the middle;

[0035] Figure 10 A schematic diagram of a portion of the structure of a cutter head according to an embodiment of the present invention;

[0036] Figure 11 for Figure 10 Cross-sectional view of the structure;

[0037] Figure 12 Schematic diagram of the structure of the driving assembly and the balancing assembly according to an embodiment of the present invention;

[0038] Figure 13 This is a schematic diagram of the connection between the first shell and the second shell according to an embodiment of the present invention;

[0039] Figure 14 An exploded schematic diagram of a first shell and a second shell according to an embodiment of the present invention;

[0040] Figure 15 A top view of a power tool according to an embodiment of the present invention;

[0041] Figure 16 for Figure 15 Schematic diagram of the mid-CC section;

[0042] Figure 17 is a partially enlarged schematic diagram of the front end of the power tool according to an embodiment of the present invention;

[0043] Figure 18Schematic diagram of another limiting method of the first limiting member according to an embodiment of the present invention.

[0044] Reference numerals:

[0045] Cutting head structure 10;

[0046] Locking assembly 100; first rotating member 110; first mounting hole 111; first receiving groove 112; plugging protrusion 113; second rotating member 120; first rotating portion 121; second rotating portion 122; plugging groove 123; abutting protrusion 124; positioning slot 125; first limiting member 130; second fastening member 140; first elastic member 150;

[0047] Mounting seat 200; supporting portion 210; extending portion 220;

[0048] First housing 300; first sub-housing 310; second sub-housing 320; third sub-housing 330; first main body 331; first connecting portion 332; engaging groove 3321; limiting protrusion 3322; engaging protrusion 333; positioning protrusion 334; first accommodating cavity 340;

[0049] Unlocking assembly 400; second stopper 410; first end 411; second end 412; rotation shaft 413; unlocking button 420; second elastic member 430;

[0050] Main structure 50;

[0051] Second housing 500; fourth sub-housing 510; fifth sub-housing 520; second sub-protrusion 521; grip section 530; first ventilation hole 531; second ventilation hole 532; control section 540; protrusion 541; second accommodating cavity 550; first accommodating area 551; second accommodating area 552; second connecting portion 560; engaging protrusion 561; sleeve 570; heat dissipation hole 571; first fastener 580; second main body 590; adapter 595;

[0052] Drive assembly 600; drive member 610; motor 611; output shaft 612; bevel gear 613; mounting member 620; first guide groove 621; snap spring 622; transmission member 630; first eccentric protrusion 631; second eccentric protrusion 632; bevel gear portion 633; ​​battery 640; bushing 650; first abutting portion 651; second abutting portion 652; third stopper 660; third abutting portion 661; third elastic member 670;

[0053] Control assembly 700; switch button 710; adjustment button 720; sliding rheostat 730; display screen 740; control panel 750; second bracket 760;

[0054] Balancing assembly 800; balancing weight 810; first bracket 820; second guide groove 821;

[0055] Processing member 90; second accommodating groove 91; DETAILED DESCRIPTION

[0056] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0057] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0058] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0059] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0060] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0061] The present application proposes an electric tool, which may be a reciprocating saw that performs sawing through a reciprocating working piece 90, for sawing plates, pipes, profiles, cables or other materials. Alternatively, it may be a grinder that performs grinding through a rotating working piece 90, for surface grinding or polishing of materials such as stone and metal. The electric tool may also be other machines, for example, an electric screwdriver, an electric drill, etc., which are not listed here one by one. It should be noted that, for ease of understanding, in the following embodiments, the electric tool is specifically illustrated as a reciprocating saw, but it should not be understood that the structure of the present application can only be applied to a reciprocating saw.

[0062] Specifically, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 8 As shown, the power tool includes a main structure 50 and a cutter head structure 10. The main structure 50 is used to hold and adjust the working parameters of the power tool. The control component 700, the drive component 600, and the balance component 800 are arranged inside the housing. Among them, the drive component 600 is used to provide power, the control component 700 is used to accurately adjust the sawing speed, and the balance component 800 ensures stable operation. The cutter head structure 10 is used to install and fix the workpiece 90 and to connect with the drive component 600 so that the workpiece 90 can be driven to move back and forth. The housing of the cutter head structure 10 is provided with a locking component 100 and an unlocking component 400. Among them, the locking component 100 is used to fix the workpiece 90 to realize the transmission from the drive component 600 to the workpiece 90, and the unlocking component 400 is used to release the workpiece 90 for easy replacement or adjustment.

[0063] In some embodiments, the driving assembly 600 of the main structure 50 includes a driving member 610 and a mounting member 620. The mounting member 620 is directly or indirectly connected to the output shaft 612 of the driving member 610. For example, the driving member 610 can be a telescopic motor having an output shaft that moves back and forth in the axial direction, so that the output shaft can be directly connected to the mounting member 620 to drive the mounting member 620 to move back and forth in a straight line. Alternatively, the driving member 610 can also be a rotary motor, whose output shaft is indirectly connected to the mounting member 620 through a gear transmission mechanism, converting the rotational motion of the output shaft into the linear reciprocating motion of the mounting member 620. The driving member 610 can also be an air pump, a hydraulic cylinder or other power source. Figure 8 In the embodiment shown, the driving member 610 is preferably a rotary motor 611, which realizes efficient power conversion through a gear transmission mechanism, ensures stable high-frequency reciprocating motion of the workpiece 90, and is conducive to the compactness and miniaturization of the power tool.

[0064] The locking assembly 100 of the cutter head structure 10 is used to connect the mounting member 620 and / or the workpiece 90. It is understood that the workpiece 90 is susceptible to wear during high-speed cutting and requires prompt replacement to ensure cutting efficiency and accuracy. To this end, the locking assembly 100 is configured to enable rapid assembly and disassembly of the workpiece 90. Specifically, the locking assembly 100 is driven to switch between a first angular position and a second angular position. In the first angular position, the workpiece 90 and the mounting member 620 are fixedly connected, their relative movement is restricted, allowing for synchronized reciprocating motion. In the second angular position, the movement restrictions between the workpiece 90 and the mounting member 620 are released, allowing the workpiece 90 to be freely removed and replaced. Thus, when an operator detects wear on the workpiece 90, they first control the drive assembly 600 to stop driving via the control assembly 700. Then, they manually or electrically rotate the locking assembly 100 from the first angular position to the second angular position, allowing for easy removal of the workpiece 90. Afterwards, the new workpiece 90 is installed and the locking assembly 100 is restored to the first angular position, and the operator can restart the driving assembly 600 to continue the efficient sawing operation.

[0065] The cutter head structure 10 often also includes a mounting base 200, which is located at the front end of the power tool. The workpiece 90 passes through the mounting base 200 and is inserted into the housing of the cutter head structure 10. The mounting base 200 not only protects the workpiece 90, reducing the risk of the operator touching the workpiece 90 while holding the power tool, but also abuts against the object to be cut, improving cutting stability and ensuring a smooth cutting process.

[0066] However, in the prior art, the mounting base is often fixedly connected to the housing of the cutter head structure, and the installation of the mounting base often interferes with the replacement of the workpiece. When replacing the workpiece, the operator must bypass the mounting base and reach into the housing to disconnect the workpiece from the mounting base. The mounting base obstructs the disassembly and assembly of the workpiece, limiting the operator's working space, making replacement of the workpiece inconvenient and inefficient.

[0067] To this end, in this embodiment, the mounting base 200 is fixedly connected to the locking assembly 100, so that the mounting base 200 can be driven to rotate synchronously with the locking assembly 100, so that the locking assembly 100 switches from the first angular position to the second angular position. Therefore, when replacing the workpiece 90, the operator only needs to rotate the mounting base 200 to easily release the connection between the workpiece 90 and the mounting member 620, avoiding the tedious operation of bypassing the mounting base 200, and significantly improving the convenience and efficiency of replacing the workpiece 90. Figure 1As shown, the end face of the mounting base 200 is also provided with an indicator mark for indicating the rotation direction, the first angular position (ie, the locked position), and the second angular position (ie, the unlocked position) of the mounting base 200, making the operation more intuitive and easy to understand.

[0068] In some embodiments, the locking assembly 100 includes a rotating member, which may be only the second rotating member 120 described below, or the first rotating member 110 and the second rotating member 120 as an integral, non-detachable structure. The rotating member is connected to the mounting base 200, thereby rotating synchronously with the mounting base 200 and achieving locking and unlocking of the workpiece 90. Figures 3 to 5 In the illustrated embodiment, the locking assembly 100 includes two rotating members, designated for ease of distinction as a first rotating member 110 and a second rotating member 120. The first rotating member 110 is partially or entirely disposed within the second rotating member 120, and the workpiece 90 is disposed within the first rotating member 110. The first rotating member 110 and the second rotating member 120 are driven to rotate synchronously. Furthermore, the first rotating member 110 is capable of axial movement relative to the second rotating member 120, thereby enabling the first rotating member 110 to maintain synchronous movement with the workpiece 90. The mounting base 200 is connected to the second rotating member 120, providing rotational freedom but no translational freedom, thereby providing stable support for the workpiece 90. When the first rotating member 110 moves axially, the processing member 90 also moves therewith. On the one hand, the synchronous movement of the first rotating member 110 with the processing member 90 can provide a certain supporting force to the processing member 90, thereby reducing the vibration of the processing member 90 when moving at high speed. On the other hand, a limiting structure for connecting the processing member 90 and the mounting member 620 is provided in the first rotating member 110. The rotation of the first rotating member 110 relative to the processing member 90 can realize locking and unlocking of the processing member 90.

[0069] Furthermore, the mounting base 200 includes a supporting portion 210 and an extending portion 220. Figure 4 As shown, the extension portion 220 extends axially along the power tool. Its two ends are connected to the abutment portion 210 and the second rotating member 120, respectively. The abutment portion 210 is used to abut the object to be cut. Due to the presence of the extension portion 220, the abutment portion 210 is positioned away from the second rotating member 120, thereby defining a protective space between the abutment portion 210 and the second rotating member 120. This protective space reduces the risk of the operator accidentally contacting the workpiece 90 during operation and does not affect the abutment and support function of the mounting base 200.

[0070] Furthermore, based on the above, the first rotating member 110 and the second rotating member 120 can rotate synchronously and move relative to each other. To achieve this effect, Figure 4 and Figure 5As shown, the outer circumference of the first rotating member 110 is provided with an insertion protrusion 113, and the inner circumference of the second rotating member 120 is provided with an insertion groove 123 that cooperates with the insertion protrusion 113. The insertion protrusion 113 extends axially along the power tool, and the insertion groove 123 extends axially along the power tool. The insertion protrusion 113 is embedded in the insertion groove 123. As a result, the first rotating member 110 can move axially relative to the second rotating member 120. At this time, the insertion protrusion 113 moves axially within the insertion groove 123, and the insertion groove 123 can serve as a guide for the movement of the insertion protrusion 113. When the second rotating member 120 rotates relative to the first rotating member 110, the groove wall of the insertion groove 123 abuts the insertion protrusion 113, driving the first rotating member 110 to rotate synchronously with the second rotating member 120. It is understandable that, in other embodiments, the insertion groove 123 can be provided on the outer circumference of the first rotating member 110 , and the insertion protrusion 113 can be provided on the inner circumference of the second rotating member 120 , which can also achieve the above-mentioned effect.

[0071] In order to enable the locking and unlocking states of the workpiece 90 to be switched when the locking assembly 100 rotates, in some embodiments (not shown in the figures), a plurality of flanges are provided on the inner wall surface of the first rotating member at intervals along its circumference. When the flanges on the inner wall surface of the first rotating member engage with the corresponding grooves on the workpiece 90, the workpiece 90 is locked and cannot move in the axial direction of the power tool; conversely, when the gap between the flanges is aligned with the grooves on the workpiece 90, the workpiece 90 is unlocked and can be removed in the axial direction of the power tool.

[0072] Alternatively, in other embodiments, the locking assembly 100 defines a first mounting hole 111 for the workpiece 90 to pass through. Figures 4 to 6 In the illustrated embodiment, a first mounting hole 111 is formed on the first rotating member 110. A first receiving groove 112 is formed in the wall of the first mounting hole 111, and the first receiving groove 112 is arranged corresponding to the second angular position. The locking assembly 100 also includes a first stopper 130, which is located in the first mounting hole 111 and between the workpiece 90 and the wall of the first mounting hole 111. When the locking assembly 100 is in the first angular position, the first stopper 130 is abutted by the wall of the first mounting hole 111, penetrates the mounting member 620, and is inserted into the groove or through-hole on the workpiece 90, thereby locking the mounting member 620 and the workpiece 90. When unlocking, the locking assembly 100 rotates and the first limiting member 130 remains stationary. When the locking assembly 100 rotates to the second angular position, the first accommodating groove 112 is aligned with the first limiting member 130, and the first limiting member 130 falls into the first accommodating groove 112, so that the first limiting member 130 is disengaged from the processing part 90, and the processing part 90 is unlocked.

[0073] Furthermore, in Figure 5In the embodiment shown, the hole wall of the first mounting hole 111 transitions smoothly with the groove wall of the first accommodating groove 112, that is, the aperture of the first mounting hole 111 gradually increases until it connects with the groove wall of the first accommodating groove 112, ensuring that the first limiting member 130 transitions smoothly during the rotation process to avoid jamming.

[0074] In addition, one end of the mounting member 620 connected to the processing member 90 is connected to a retaining spring 622 (such as Figure 17 As shown), the retaining spring 622 is located on the side of the first rotating member 110 away from the first accommodating cavity, and the retaining spring 622 is used to limit the axial displacement of the first limiting member 130 to prevent the first limiting member 130 from falling off from the front end opening of the first mounting hole 111. In other embodiments (such as Figure 18 As shown), a groove for accommodating the first limiting member 130 is opened on the inner wall of the first mounting hole 111, and the axial displacement of the first limiting member 130 is limited by the groove wall.

[0075] It should be noted that in some embodiments (not shown in the figure), the processing piece 90 is provided with a through hole extending along its thickness direction, so that the first limiter 130 can be passed through the mounting piece 620 and inserted into the through hole, thereby achieving a firm locking of the processing piece 90 and the mounting piece 620. Figure 6 In the embodiment shown, a second receiving groove 91 is provided on the side of the workpiece 90 along the width direction. When the locking assembly 100 is in the first angular position, the first limiting member 130 is inserted into the second receiving groove 91. When the locking assembly 100 is in the second angular position, the first limiting member 130 exits the second receiving groove 91. It is understood that the workpiece 90 can be provided with the second receiving groove 91 on one side, or can be provided with the second receiving groove 91 on the other side. Figure 6 As shown, the second accommodating grooves 91 are provided on both sides, and correspondingly, Figure 5 and Figure 6 As shown, two first receiving grooves 112 are correspondingly provided on the wall of the first mounting hole 111, and two first stoppers 130 are correspondingly provided on the locking assembly 100. It can be understood that by limiting the width of the workpiece 90 on both sides, it is possible to effectively prevent the workpiece 90 from swinging during high-speed rotation, thereby improving the stability and safety of the workpiece 90.

[0076] It should be noted that Figure 6 The dotted sphere shown in the figure represents the first limiting member 130, wherein the first limiting member 130 indicated by the number a is in a locked state of being inserted into the second receiving groove 91 of the processing member 90, and the first limiting member 130 indicated by the number b is in an unlocked state of exiting the second receiving groove 91 and falling into the first receiving groove 112.

[0077] In some embodiments, the shell of the cutter head structure 10 defines a first accommodating cavity 340 for accommodating the locking assembly 100. It should be noted that, in order to distinguish it from the shell of the main structure 50, the shell of the cutter head structure 10 is set as the first shell 300, and the shell of the main structure 50 is set as the second shell 500.

[0078] In such Figure 7 In the illustrated embodiment, the second rotating member 120 of the locking assembly 100 is provided with a positioning slot 125, and the first housing 300 is provided with a positioning protrusion 334. When the locking assembly 100 is installed in the first housing 300, the positioning protrusion 334 is inserted into the positioning slot 125. As the locking assembly 100 rotates, the positioning protrusion 334 moves within the positioning slot 125. The positioning slot 125 can limit the rotation angle of the locking assembly 100, and the two ends of the positioning slot 125 correspond to the first angular position and the second angular position, respectively. That is, when the locking assembly 100 is in the first angular position, the positioning protrusion 334 is at one end of the positioning slot 125, and when the locking assembly 100 is in the second angular position, the positioning protrusion 334 moves to the other end of the positioning slot 125. When the operator rotates the locking assembly 100 to the second angular position, the positioning protrusion 334 moves within the positioning slot 125 until it abuts against the slot wall at the end of the positioning slot 125, thereby providing a clear collision feedback, prompting the operator that the locking assembly 100 has been successfully unlocked. Similarly, when the operator rotates the locking assembly 100 to the first angular position, or when the locking assembly 100 is restored to the first angular position under the drive of the first elastic member 150, the positioning protrusion 334 will also abut against the other end of the slot wall of the positioning slot 125, accurately positioning the locking assembly 100 to a position where the first limiting member 130 can be inserted into the second receiving groove 91 of the workpiece 90.

[0079] In some embodiments, the cutter head structure 10 further includes a first elastic member 150, one end of the first elastic member 150 is connected to the locking assembly 100, and the other end is connected to the mounting member 620. Figure 6As shown, the first elastic member 150 is a torsion spring. One end of the torsion spring is inserted into the mounting member 620 for securing, and the other end is inserted into the first rotating member 110 for securing. Therefore, when the operator replaces the workpiece 90, the locking assembly 100 is rotated from the first angular position to the second angular position against the elastic force of the torsion spring. During this process, the torsion spring elastically deforms and accumulates elastic potential energy, tending to drive the locking assembly 100 back to the first angular position. After the operator replaces the workpiece 90, they release the locking assembly 100, causing the torsion spring to elastically recover and automatically return the locking assembly 100 to the first angular position, ensuring that the workpiece 90 and the mounting member 620 are securely locked again. The provision of the torsion spring not only facilitates the assembly and disassembly process of the workpiece 90, but also eliminates the need for the operator to manually rotate the locking assembly 100 from the second angular position back to the first angular position. Furthermore, the elastic force of the torsion spring maintains the locking assembly 100 in the first angular position, reducing the risk of accidental unlocking due to vibration and other factors during power tool operation, thereby improving overall convenience and safety.

[0080] In addition, in order to further improve the safety of the power tool and reduce the possibility of accidental unlocking, the power tool is also provided with an unlocking component 400. Figure 3 and Figure 7 As shown, the unlocking assembly 400 can provide additional fixation for the locking assembly 100, ensuring that it will not be accidentally unlocked due to vibration or other external forces during operation. The unlocking assembly 400 has a first state and a second state. In the first state, the unlocking assembly 400 is connected to the locking assembly 100, so that the rotation of the locking assembly 100 is restricted, thereby maintaining the locking assembly 100 in the first angular position. In the second state, the unlocking assembly 400 is separated from the locking assembly 100, allowing the locking assembly 100 to switch from the first angular position to the second angular position.

[0081] In order to realize the effective restriction of the unlocking assembly 400 on the locking assembly 100, the locking assembly 100 includes an abutting protrusion 124 (refer to Figure 4 and Figure 7 As shown in FIG. 4 , the unlocking assembly 400 includes a second stopper 410 and an unlocking button 420. When the unlocking assembly 400 is in a first state, the second stopper 410 is in close contact with the abutment protrusion 124, restricting the rotation of the locking assembly 100. When switched to a second state, the second stopper 410 is separated from the abutment protrusion 124, allowing the locking assembly 100 to rotate freely, ensuring operational safety and flexibility.

[0082] More specifically, Figure 7As shown, the second stopper 410 includes a first end 411, a second end 412, and a rotation axis 413. The rotation axis 413 is located between the first end 411 and the second end 412 and is fixedly connected to the first housing 300. The second stopper 410 is sleeved on the rotation axis 413 and can rotate about the rotation axis 413. The first end 411 of the second stopper 410 is configured to abut against the abutment protrusion 124, and the second end 412 is connected to the unlocking button 420. The unlocking button 420 is protruding from the surface of the first housing 300. When an operator presses the unlocking button 420, the unlocking button 420 drives the second end 412 of the second stopper 410 to rotate about the rotation axis 413, thereby tilting the first end 411 of the second stopper 410 and separating it from the abutment protrusion 124. The unlocking assembly 400 switches from the first state to the second state, allowing the locking assembly 100 to rotate freely, making it easier for the operator to replace the workpiece 90.

[0083] In some embodiments, as Figure 1 and Figure 2 As shown, the second housing 500 of the main structure 50 includes a grip section 530 and a control section 540 arranged in sequence along its axial direction. The interior of the second housing 500 defines a second accommodating chamber 550 for accommodating the drive assembly 600, the control assembly 700, and the balancing assembly 800. The drive assembly 600 includes a drive member 610 and a mounting member 620. The mounting member 620 is connected to the drive member 610 and is driven by the drive member 610 to reciprocate along the axial direction of the main structure 50. The control assembly 700 is used to control the drive member 610.

[0084] In the prior art, the control assembly is often disposed together with the motor in the grip portion of the main structure, resulting in a larger diameter of the grip portion, which is inconvenient for the operator to grasp and is not conducive to the miniaturization and compactness of the reciprocating saw.

[0085] To this end, in this embodiment, the positions of the control component 700 and the drive component 600 are optimized: Figure 2 、 Figure 8 and Figure 9 As shown, the driving member 610 is arranged in the second accommodating cavity 550 of the gripping section 530, and the mounting member 620 and the control assembly 700 are arranged in the second accommodating cavity 550 of the control section 540, thereby effectively reducing the diameter of the gripping section 530 and improving the gripping comfort. Through the reasonable layout in the second accommodating cavity 550 of the control section 540, the mounting member 620 and the control assembly 700 can be accommodated in the control section 540, thereby realizing the overall miniaturization and compactness of the reciprocating saw.

[0086] Furthermore, in order to increase the accommodation capacity of the control section 540 and reduce the difficulty of holding the grip section 530, the sizes of the control section 540 and the control section 540 are designed respectively, such as Figure 2 、 Figure 8and Figure 15 As shown, the maximum width of the control section 540 of the second shell 500 is not less than the maximum width of the grip section 530, so that the grip section 530 is easier to hold than the control section 540. The control section 540 has a larger accommodating space than the grip section 530, ensuring a reasonable layout of each area.

[0087] In some embodiments, the second accommodating cavity 550 of the control section 540 includes a first accommodating area 551 and a second accommodating area 552, which are respectively located on the upper and lower sides or the left and right sides of the mounting member 620. It can be understood that, with the axis of the output shaft 612 of the driving member 610 as the front-to-back direction, the up-down direction and the left-to-right direction are perpendicular to each other and are both perpendicular to the front-to-back direction.

[0088] Taking the electric tool as a reciprocating saw as an example, the mounting member 620 is a flat structure. When viewed along the width direction of the mounting member 620 (refer to Figure 9 and Figure 11 As shown in the cross-sectional view, the mounting member 620 divides the second accommodating cavity 550 of the control section 540 into a first accommodating area 551 and a second accommodating area 552, wherein the first accommodating area 551 is used to accommodate the control assembly 700. Because the mounting member 620 in the present application divides the accommodating space of the control section 540, the structure and size of the control assembly 700 are designed so that it can be accommodated in the first accommodating area 551 without interfering with the mounting member 620, thereby improving the utilization rate of the second accommodating cavity 550.

[0089] In some embodiments, as Figure 8 、 Figure 9 and Figure 11 As shown, the drive assembly 600 includes a transmission member 630 located in the second accommodating cavity 550. More specifically, the transmission member 630 is located in the second accommodating area 552 of the control section 540 and is located on either side of the mounting member 620 along with the control assembly 700. The mounting member 620 is connected to the drive member 610 via the transmission member 630. The transmission member 630 is used to convert the rotational input provided by the drive member 610 into a linear reciprocating drive for the mounting member 620.

[0090] Furthermore, in some embodiments (not shown in the figure), the transmission member 630 and the mounting member 620 can be converted using a crank slider structure. Figure 11 and Figure 12In the illustrated embodiment, the transmission member 630 and the mounting member 620 utilize a structure in which a bevel gear 613 and an eccentric shaft cooperate to achieve efficient conversion of rotational input into linear reciprocating motion. Specifically, a bevel gear 613 is connected to the end of the output shaft 612 of the driving member 610. The transmission member 630 is provided with a circle of bevel teeth 633 along its circumference. The bevel gear 613 meshes with the bevel teeth 633 of the transmission member 630. The transmission member 630 is also provided with an eccentric protrusion, which is offset from the rotation axis of the transmission member 630. The mounting member 620 is provided with a first guide groove 621 perpendicular to the reciprocating direction. The eccentric protrusion cooperates with the first guide groove 621 of the mounting member 620 to achieve conversion of rotational input into linear reciprocating motion. Furthermore, this transmission structure is relatively stable and easy to maintain, further improving the efficiency and durability of the power tool, allowing it to maintain high performance despite its compact design.

[0091] In addition, the main structure 50 further includes a balancing assembly 800 disposed in the second accommodating cavity 550. The balancing assembly 800 is disposed in the second accommodating area 552 of the control section 540, further reflecting the rational use of the space in the second accommodating cavity 550 by the power tool of the present application. Figure 11 and Figure 12 As shown, the balancing assembly 800 includes a balancing block 810, which is connected to the transmission member 630. The balancing block 810 and the mounting member 620 are respectively arranged on both sides of the transmission member 630. The transmission member 630 drives the balancing block 810 to move back and forth while driving the mounting member 620 to move back and forth. In addition, the moving direction of the balancing block 810 is opposite to the moving direction of the mounting member 620 to offset the vibration caused by the movement of the mounting member 620 and improve the operational stability of the power tool.

[0092] Specifically, the transmission member 630 includes a first side surface and a second side surface opposite to each other. Figure 11 and Figure 12 As shown, an eccentric protrusion for engaging with the first guide groove 621 is provided on the first side surface, and a bevel gear portion 633 is also provided on the first side surface. The second side surface is also provided with an eccentric protrusion for connecting with the balancing weight 810. For ease of distinction, the eccentric protrusion on the first side surface is designated as the first eccentric protrusion 631, and the protrusion on the second side surface is designated as the second eccentric protrusion 632. The second eccentric protrusion 632 is inserted into the through hole of the balancing weight 810 to convert the rotation of the transmission member 630 into a linear drive for the balancing weight 810.

[0093] It should be noted that to achieve counter-directional movement of the mounting member 620 and the balancing weight 810, the line connecting the first eccentric protrusion 631 and the second eccentric protrusion 632, viewed along the axial direction of the transmission member 630, passes through the central axis of the transmission member 630 and is located on different sides of the central axis of the transmission member 630. It should be understood that the central axis of the transmission member 630 is not a solid line; it extends axially along the transmission member 630, and the transmission member 630 is driven to rotate about the central axis. Furthermore, it should be noted that the line connecting the first eccentric protrusion 631 and the second eccentric protrusion 632 coincides with the direction of movement of the mounting member 620.

[0094] Furthermore, the balancing assembly 800 includes a first bracket 820, which is fixedly connected to the second housing 500. The first bracket 820 supports the balancing weight 810, ensuring its stability during reciprocating movement and reducing vibration. In addition, the first bracket 820 defines a second guide slot 821 along the direction of movement, and the balancing weight 810 is disposed in the second guide slot 821.

[0095] In some embodiments, as Figure 10 and Figure 15 As shown, the control component 700 includes a switch button 710, a control panel 750, and a second bracket 760 for mounting the control panel 750, which is arranged on the second shell 500. The second bracket 760 is arranged in the first accommodating area 551. The switch button 710 is electrically connected to the control panel 750. The control panel 750 controls the start and stop of the driving member 610 through the circuit. Thus, the start and stop control of the driving member 610 can be achieved by pressing the switch button 710.

[0096] The switch button 710 has a first plane for being touched, and the first plane is parallel to the mounting member 620. It is understandable that the switch button 710 is arranged parallel to the mounting member 620, thereby forming a relatively regular space between the switch button 710 and the mounting member 620 for accommodating components such as the second bracket 760. The control component 700 also includes a display screen 740, which is used to display the working status and parameters of the power tool, such as speed, power, etc. The display screen 740 is electrically connected to the control panel 750, and the user can grasp the tool operation status in real time through the display screen 740. The display screen 740 has a second plane for displaying information, and the second plane is arranged parallel to the mounting member 620. It is understandable that the switch button 710 and the display screen 740 can be as follows Figure 15As shown, they are arranged on the same plane. Alternatively, the switch button 710 and the display screen 740 can be arranged on different sides of the mounting member 620, thereby being arranged parallel to each other. Since the display screen 740 is arranged parallel to the mounting member 620, a relatively regular space is formed between the display screen 740 and the mounting member 620, which is beneficial for the arrangement of components in the second accommodating cavity 550 and improves the space utilization rate of the second accommodating cavity 550.

[0097] In some embodiments, in addition to the switch button 710, the control component 700 is also provided with an adjustment button 720. The adjustment button 720 is electrically connected to the control board 750, and the rotation speed of the driving member 610 is adjusted through the control board 750 to adjust the frequency of the reciprocating motion of the workpiece 90. The adjustment button 720 is also provided on the second shell 500, and the switch button 710 and the adjustment button 720 are arranged at circumferential intervals along the second shell 500. During the use of the power tool, first press the switch button 710 to start the driving member 610, and the workpiece 90 starts to reciprocate. Then, the frequency of the reciprocating motion of the workpiece 90 can be regulated by the adjustment button 720 to make precise adjustments according to different material hardness and work requirements to ensure the best cutting effect. It can be understood that the switch button 710 and the driving button are arranged at circumferential intervals to facilitate the operator's one-handed control. In the case of Figure 15 In the illustrated embodiment, the adjustment button 720 is disposed on the left side of the switch button 710 so that the operator can easily reach it with his thumb to achieve quick adjustment.

[0098] In some embodiments, the adjustment button 720 can be a knob that can be rotated to different angles to correspond to different speeds of the driving member 610. Figure 10 and Figure 15 In the illustrated embodiment, the adjustment button 720 is a sliding adjustment structure. A through slot extending along the axial direction thereof is provided on the second shell 500, and the adjustment button 720 is passed through the through slot and is slidably connected to the second shell 500. Corresponding to the position of the through slot, the control assembly 700 also includes a sliding rheostat 730, which is electrically connected to the driving member 610 through the control board 750. When the adjustment button 720 slides, the resistance value of the sliding rheostat 730 is changed, thereby adjusting the rotation speed of the driving member 610. The sliding rheostat 730 is fixed in the second shell 500 to ensure stable operation. The through slot design allows the adjustment button 720 to operate smoothly and can provide a sliding guide for the adjustment button 720, thereby improving the user experience.

[0099] In some embodiments, as Figure 1 and Figure 15As shown, the control section 540 defines a raised portion 541. The distance between the raised portion 541 and the axis of the second housing 500 is greater than the distance between the rest of the second housing 500 and the axis. The switch button 710 and the display screen 740 are disposed on the raised portion 541. It will be appreciated that the provision of the raised portion 541, on the one hand, places the switch button 710 and the display screen 740 in a conspicuous and less accessible location, thereby reducing the possibility of accidentally touching the switch button 710. On the other hand, the provision of the raised portion 541 provides a larger second accommodating cavity 550, allowing the first accommodating area 551 to accommodate more components than the second accommodating area 552, thereby accommodating the installation requirements of the second bracket 760, the switch button 710, and the display screen 740.

[0100] In the prior art, the output shaft of the motor is arranged parallel to the mounting member, so that during the operation of the reciprocating saw, the mounting member will vibrate irregularly, which on the one hand affects the operator's experience of use, and on the other hand easily causes dangers such as cracking of the workpiece and loss of the reciprocating saw.

[0101] Therefore, in some embodiments of the present application, the structure of the drive assembly 600 is optimized to reduce the vibration amplitude and frequency of the mounting member 620. Specifically, based on the above, the drive assembly 600 provided in the main structure 50 includes a mounting member 620, a drive member 610 and a transmission member 630. The mounting member 620 is used to connect with the processing member 90. The drive member 610 includes a motor 611 and an output shaft 612 connected to the motor 611. The transmission member 630 is respectively connected to the output shaft 612 and the mounting member 620, and is used to convert the rotation input provided by the output shaft 612 into a linear reciprocating drive for the mounting member 620. It should be noted that, with reference to FIG. Figure 11 As shown, in this embodiment, the mounting member 620 is coaxially arranged with the output shaft 612. It should be explained that the coaxial arrangement of the mounting member 620 and the output shaft 612 means that the axis of the output shaft 612 passes through the mounting member 620. Through this coaxial arrangement, the vibration of the mounting member 620 is significantly reduced, thereby improving the stability and safety of operation.

[0102] In some embodiments, the driving assembly 600 further includes a battery 640, which is electrically connected to the motor 611 via a power line. Figure 2 and Figure 8 As shown, the battery 640 and the motor 611 are both arranged in the grip section 530 of the second shell 500, and the battery 640 is arranged at the end of the driving member 610 away from the transmission member 630, that is, the transmission member 630, the driving member 610 and the battery 640 are arranged in sequence to form a compact structural layout. In addition, the battery 640 and the output shaft 612 of the driving member 610 are also kept coaxially arranged, so that the entire power tool has a cylindrical structure, which is easy to hold and has a compact structure. The smaller and more compact structure is also more suitable for narrow working conditions.

[0103] In some embodiments, based on the foregoing, Figure 11 and Figure 12 As shown, the driving member 610 also includes a bevel gear 613 arranged at the end of the output shaft 612, and the transmission member 630 is provided with a bevel tooth portion 633 distributed along its circumference and meshing with the bevel gear 613 for transmission. The transmission member 630 is also provided with a first eccentric protrusion 631, and the mounting member 620 is also provided with a first guide groove 621. The first guide groove 621 extends perpendicular to the moving direction of the mounting member 620, and the first eccentric protrusion 631 is passed through the first guide groove 621. Through the cooperation of the transmission member 630 and the mounting member 620, the conversion of the rotation input into a linear reciprocating drive is realized.

[0104] Furthermore, the drive assembly 600 further includes a bushing 650, such as Figure 11 and Figure 12 As shown, the bushing 650 is sleeved on the first eccentric protrusion 631, and the bushing 650 includes a first abutting portion 651, as shown in FIG. Figure 11 As shown, the lower surface of the mounting member 620 abuts against the first abutment portion 651, so that the first abutment portion 651 supports and lifts the mounting member 620, so that the mounting member 620 and the bevel tooth portion 633 are spaced apart in the axial direction of the transmission member 630 to avoid interference between the mounting member 620 and the transmission member 630.

[0105] Furthermore, the bushing 650 further includes a second abutment portion 652, such as Figure 11 and Figure 12 As shown, the second abutting portion 652 is connected to the first abutting portion 651, and the outer diameter of the second abutting portion 652 is smaller than the outer diameter of the first abutting portion 651, so that the bushing 650 forms a step surface for abutting against the lower surface of the mounting member 620. The second abutting portion 652 is inserted into the first guide groove 621. It should be noted that the bushing 650 can be made of a soft material such as rubber. The bushing 650 is sleeved on the first eccentric protrusion 631, and the first abutting portion 651 is provided on the lower side of the mounting member 620 to play a supporting and vibration-reducing role; the second abutting portion 652 is located in the first guide groove 621, which can effectively reduce the collision vibration of the first eccentric protrusion 631 when it slides in the first guide groove 621, thereby reducing wear.

[0106] In some embodiments, the drive assembly 600 further includes a third position-limiting member 660, which is disposed on the side of the mounting member 620 away from the transmission member 630. The third position-limiting member 660 is disposed on the side of the mounting member 620 away from the transmission member 630, that is, located in the first accommodation area 551 of the control section 540. The third position-limiting member includes a third abutting portion 661 extending along the moving direction of the mounting member 620, and the third abutting portion 661 abuts against the top surface of the mounting member 620 to limit the axial displacement of the mounting member 620 along the transmission member 630. It is understandable that the third abutting portion 661 can be a bar-shaped protrusion disposed on the side of the second bracket 760 close to the mounting member 620, or it can also be as follows Figure 12 The third limiting member 660 can be made of metal or plastic, with both ends passing through the second bracket 760 and connected to the second bracket 760 or the second housing 500, so that the third abutting portion 661 is arranged parallel to the moving direction of the mounting member 620 and abuts against the mounting member 620, thereby guiding the movement of the mounting member 620 and limiting the movement of the mounting member 620 along the axis of the transmission member 630, thereby suppressing the vibration of the mounting member 620.

[0107] Furthermore, the third limiting member 660 is in flexible contact with the mounting member 620 to prevent the rigid contact from affecting the movement of the mounting member 620. Specifically, the driving assembly 600 further includes a third elastic member 670 (refer to Figure 12 As shown, the third elastic member 670 is connected to the third limiting member 660, so that the third limiting member 660 is subjected to the compressive force exerted by the third elastic member 670 toward the mounting member 620, thereby maintaining appropriate contact between the third abutment portion 661 and the mounting member 620. This ensures stable guidance while allowing for slight adjustment, effectively balancing rigidity and flexible movement, and improving the stability and durability of the overall transmission system. It is understood that the third elastic member 670 can be a spring or a rubber pad, and its elastic coefficient can be adjusted according to actual needs to ensure that it can provide an appropriate compressive force under different operating conditions, further optimizing the movement trajectory of the mounting member 620 and reducing friction and noise.

[0108] In the prior art, the housing of a reciprocating saw is often formed by joining two integrally injection-molded left and right housings. The diameter of the junction between the blade head structure and the main body structure is often small, resulting in poor rigidity at the junction. During the cutting process, the blade head structure contacts the object to be cut through the mounting bracket. Due to its poor rigidity, the blade head structure is prone to vibration and deformation compared to the main body structure, resulting in poor cutting accuracy and trajectory deviation.

[0109] Therefore, in some embodiments, the housing of the reciprocating saw is optimized. Figure 1 、 Figure 2 、 Figure 13 and Figure 14 As shown, the tool head structure 10 includes a first housing 300, which includes a first main body 331 and a first connecting portion 332 located at the rear end of the first main body 331 and connected to the first main body 331. The main structure 50 includes a second housing 500, which includes a second main body 590 and a second connecting portion 560 located at the front end of the second main body 590 and connected to the second main body 590. The second connecting portion 560 is sleeved on the first connecting portion 332, and the first connecting portion 332 and the second connecting portion 560 are fixedly connected to form the housing of the power tool.

[0110] It can be understood that in this embodiment, the shell of the cutter head structure 10 and the shell of the main structure 50 are injection molded separately and then assembled and connected to form a whole. On the one hand, it is beneficial to reduce the difficulty of injection molding of the shell. On the other hand, two layers of shells are overlapped at the connection between the cutter head structure 10 and the main structure 50, thereby effectively improving the rigidity of the shell at the connection, reducing vibration deformation, and ensuring cutting accuracy and trajectory stability.

[0111] In some embodiments, the first housing 300 includes a first sub-housing 310, a second sub-housing 320, and a third sub-housing 330. The first main portion 331 and the first connecting portion 332 are part of the third sub-housing 330. The axial direction of the first housing 300 is assumed to be the first direction, and the first sub-housing 310, the second sub-housing 320, and the third sub-housing 330 are arranged sequentially along the first direction. In other embodiments, the first housing 300 may include only the second sub-housing 320 and the third sub-housing 330, with the first sub-housing 310 serving as a lampshade and being disposed around the second sub-housing 320 to facilitate illumination during use.

[0112] Furthermore, the second housing 500 includes a fourth sub-housing 510 and a fifth sub-housing 520, which are arranged sequentially along a second direction, with the second direction intersecting the first direction. Thus, during assembly of the power tool housing, the fourth sub-housing 510 and the fifth sub-housing 520 can approach each other along the second direction and be assembled. After assembly, the fourth sub-housing 510 and the fifth sub-housing 520 jointly define a second main body 590 and a second connecting portion 560. The assembled design of the fourth sub-housing 510 and the fifth sub-housing 520 facilitates the sleeved arrangement of the second connecting portion 560 within the first connecting portion 332, and the second connecting portion 560 formed by this assembly can tightly mate with the first connecting portion 332.

[0113] In some embodiments (not shown in the figure), the first connection portion 332 and the second connection portion 560 are connected by gluing. Figure 14In the illustrated embodiment, a snap-fit ​​groove 3321 is provided on the outer circumference of the first connecting portion 332, and a snap-fit ​​protrusion 561 is provided on the inner wall of the second connecting portion 560. The snap-fit ​​protrusion 561 engages with the snap-fit ​​groove 3321, thereby limiting not only the axial movement of the first connecting portion 332 and the second connecting portion 560, but also the relative rotation of the first connecting portion 332 and the second connecting portion 560 about the axis. It will be understood that in other embodiments, the snap-fit ​​groove 3321 may also be provided on the inner wall of the second connecting portion 560, and the snap-fit ​​protrusion 561 may be provided on the outer circumference of the first connecting portion 332.

[0114] Further, such as Figure 13 and Figure 14 As shown, the engaging protrusion 561 is provided on the inner wall surface of the second connecting portion 560, and the engaging protrusion 561 and the engaging groove 3321 extend along the second direction. The fourth sub-housing 510 is provided with a first sub-protrusion (not shown), and the fifth sub-housing 520 is provided with a second sub-protrusion 521. During the assembly process of the fourth sub-housing 510 and the fifth sub-housing 520, the first sub-protrusion is inserted into the engaging groove 3321 along one end thereof, and the second sub-protrusion 521 is inserted into the engaging groove 3321 along the other end thereof, until the fourth sub-housing 510 and the fifth sub-housing 520 are completely assembled, so that the first sub-protrusion and the second sub-protrusion 521 together form the aforementioned engaging protrusion 561. The second shell 500 also includes a first fastener 580 for connecting the first sub-protrusion and the second sub-protrusion 521. The first fastener 580 is passed through the through hole of the first sub-protrusion and is threadedly connected to the second sub-protrusion 521. Alternatively, the first fastener 580 is passed through the second sub-protrusion 521 and is threadedly connected to the first sub-protrusion.

[0115] In some embodiments, the diameter of the connection between the tool head structure 10 and the main body structure 50 is the smallest, so that the outer diameter of the second connecting portion 560 is smaller than the outer diameter of the second main body 590, and the second connecting portion 560 and the second main body 590 are connected by the adapter 595. Figure 13 As shown, the second connecting portion 560 and the second main body portion 590 both extend along the axial direction of the second shell 500, and the transition portion 595 substantially extends along the radial direction of the second shell 500 to connect the second connecting portion 560 and the second main body portion 590 respectively. Figure 13 and Figure 14As shown, the first connecting portion 332 further includes a limiting protrusion 3322 protruding from the outer periphery of the first connecting portion 332. The limiting protrusion 3322 extends into the second main body portion 590 and abuts against the inner wall of the connecting portion, thereby further limiting the axial displacement of the first shell 300 and the second shell 500. It will be understood that when the fourth sub-shell 510 and the fifth sub-shell 520 are assembled to form the second connecting portion 560, the first connecting portion 332 extends into the second main body portion 590 and closely abuts against the inner wall of the adapter portion 595.

[0116] In some embodiments, the driving member 610 is located in the second housing 500. The driving member 610 generates a large amount of heat during operation. To prevent overheating, Figure 14 As shown, the second shell 500 is also provided with a first ventilation hole 531 and a second ventilation hole 532 arranged through the shell wall. The first ventilation hole 531 and the second ventilation hole 532 are respectively located at both ends of the driving member 610 along the first direction to form convection in the second shell 500, take away the heat generated by the driving member 610, and prevent the power tool from overheating and causing performance degradation or damage.

[0117] In some embodiments, as Figure 8 As shown, the battery 640 is also located in the second shell 500, and the driver 610 and the battery 640 are arranged in sequence along the first direction. The first ventilation hole 531 is located at the end of the battery 640 away from the driver 610, and the second ventilation hole 532 is located at the end of the driver 610 away from the battery 640. The first ventilation hole 531 and the second ventilation hole 532 form a convection path passing through the battery 640 and the driver 610, thereby reducing the temperature rise rate of the battery 640 and the driver 610 and maintaining them at a suitable operating temperature. Furthermore, a heat dissipation component (not shown in the figure) can also be provided in the second shell 500 to further improve the heat dissipation efficiency.

[0118] In some embodiments, based on the above, the second shell 500 includes a grip section 530 and a control section 540. The outer diameter of the grip section 530 is smaller than the outer diameter of the control section 540, so that the grip section 530 is easy for the operator to hold and the control section 540 has a better accommodating capacity. However, the grip section 530 and the control section 540 form a stepped shaft structure, which is not beautiful, and the operator's palm is likely to block the ventilation holes on the grip section 530 when holding it, affecting the heat dissipation effect. For this reason, in this embodiment, Figure 1 As shown, the power tool further includes a sleeve 570, which is sleeved on the grip section 530 and transitions flush with the control section 540. The sleeve 570 can be made of metal material, which has a good grip feel and thermal conductivity.

[0119] Furthermore, the sleeve 570 is provided with a plurality of heat dissipation holes 571, at least one heat dissipation hole 571 is provided corresponding to the first ventilation hole 531, and at least one heat dissipation hole 571 is provided corresponding to the second ventilation hole 532, so that the airflow forms effective convection with the ventilation holes through the heat dissipation holes 571, significantly improving the heat dissipation effect. Figure 1 In the illustrated embodiment, the heat dissipation holes 571 are evenly and densely distributed on the surface of the sleeve 570, ensuring smooth airflow, effectively reducing the temperature of the grip section 530, and preventing the heat dissipation path from being blocked when the operator grips it.

[0120] Prior art often incorporates mechanisms to facilitate assembly and disassembly of workpieces. For example, the workpiece is unlocked by rotating its clamping structure (which elastically deforms the torsion spring). After the saw is replaced, the torsion spring regenerates its elastic deformation and resets the clamping structure to secure the workpiece. While the workpiece is cutting an object, it continuously experiences a reaction force from the object. Excessive reaction force can cause the torsion spring to deform, leading to the risk of the workpiece falling off and potentially causing a safety accident.

[0121] In some embodiments, the tool head portion of the power tool includes a locking assembly 100 and an unlocking assembly 400. The locking assembly 100 is used to connect the mounting member 620 and the workpiece 90. The locking assembly 100 is driven to switch between a first angular position and a second angular position. In the first angular position, relative movement of the workpiece 90 and the mounting member 620 is restricted. In the second angular position, the restriction on relative movement between the workpiece 90 and the mounting member 620 is released. To limit the stability of the locking assembly 100 in the first angular position, an unlocking assembly 400 is designed to prevent the locking assembly 100 from loosening. The unlocking assembly 400 has a first state and a second state. In the first state, the unlocking assembly 400 abuts the locking assembly 100, and the rotation of the locking assembly 100 is restricted, so that the locking assembly 100 remains in the first angular position. In the second state, the rotation restriction of the locking assembly 100 is released, allowing the locking assembly 100 to rotate to the second angular position.

[0122] As a result, during operation of the power tool, the unlocking assembly 400 maintains stable contact with the locking assembly 100, ensuring a tight connection between the workpiece 90 and the mounting member 620. The locking assembly 100 no longer relies on the elastic force of the torsion spring to maintain its locked state, effectively preventing the workpiece 90 from falling off due to excessive reaction force, significantly improving operational safety. When the workpiece 90 needs to be replaced, the workpiece 90 can be easily separated from the mounting member 620 by switching the unlocking assembly 400 to the second state and then rotating the locking assembly 100 to the second angular position, facilitating quick replacement of the workpiece 90 with simple and efficient operation.

[0123] In some embodiments, the power tool further includes a first housing 300, and the unlocking assembly 400 includes an unlocking button 420 protruding from the outer circumference of the first housing 300. When it is necessary to switch the unlocking assembly 400 to the second state, the unlocking button 420 is simply pressed to slide along the mounting hole to a predetermined position. The unlocking assembly 400 is then switched from the first state to the second state. At this time, the rotation restriction of the locking assembly 100 is released, making it easier for the operator to rotate the locking assembly 100.

[0124] Furthermore, the locking assembly 100 includes an abutment protrusion 124, and the unlocking assembly 400 also includes a second stopper 410 rotatably connected to the first housing 300. More specifically, the second stopper 410 is disposed in a chamber defined by the second sub-housing 320 and the third sub-housing 330, and is rotatably connected to the third sub-housing 330. The second stopper 410 includes a first end 411, a second end 412, and a rotational axis 413. The rotational axis 413 is located between the first end 411 and the second end 412, such that when the second end 412 is pressed down, the first end 411 tilts upward. The first end 411 is configured to abut the abutment protrusion 124 of the locking assembly 100, and the second end 412 is rotatably connected to the unlocking button 420. In the first state, the first end 411 abuts against the abutment protrusion 124. When the unlocking button 420 is pressed, the first end 411 rotates around the rotation axis 413 and disengages from the abutment protrusion 124. The unlocking component 400 then enters the second state, and the rotation restriction of the locking component 100 is released.

[0125] Furthermore, the unlocking assembly 400 is also provided with an automatic reset structure. For example, the unlocking button 420 is connected to an elastic member. When the external force applied to the unlocking button 420 disappears, the elastic member drives the unlocking button 420 to reset and drives the second limit member 410 to reset. Alternatively, in the case of Figure 3 and Figure 7 In the illustrated embodiment, the unlocking assembly 400 further includes a second elastic member 430, which is a torsion spring and is mounted on the rotating shaft 413. One end of the second elastic member 430 is connected to the second limiting member 410, and the other end is fixedly connected to the third sub-housing 330. Therefore, when the unlocking button 420 is pressed and the second limiting member 410 is driven to rotate, the second elastic member 430 elastically deforms and tends to drive the second limiting member 410 to return to its original position. When the external force applied to the unlocking button 420 disappears, the second elastic member 430 drives the second limiting member 410 to return to its original position, and in turn, the unlocking button 420 to its original position.

[0126] In some embodiments, as Figure 16As shown, the third sub-shell 330 of the first shell 300 is provided with a locking protrusion 333. In the first state, one side of the first end 411 of the second limiting member 410 abuts against the abutting protrusion 124 to limit the rotation of the abutting protrusion 124, and the other side abuts against the locking protrusion 333. The locking protrusion 333 can provide additional supporting force to the second limiting member 410 to ensure its stability in the first state.

[0127] In some embodiments, as Figure 2 and Figure 14 As shown, the first housing 300 includes a first sub-housing 310, a second sub-housing 320 and a third sub-housing 330 arranged in sequence along the first direction. The outer circumferences of the second sub-housing 320 and the third sub-housing 330 are respectively provided with grooves. When the second sub-housing 320 and the third sub-housing 330 are assembled, a third mounting hole is formed for the unlocking button 420 to pass through. Figure 3 and Figure 14 As shown, the second sub-housing 320 and the third sub-housing 330 are connected by screws, and the first sub-housing 310 and the second sub-housing 320 are connected by snaps. During assembly, the second sub-housing 320 and the third sub-housing 330 are first fixed by screws, and then connected to the first sub-housing 310 by snaps. The first sub-housing 310 can cover the threaded connection structure on the second sub-housing 320, making the overall structure more beautiful.

[0128] In addition, the second rotating member 120 of the locking assembly 100 includes a first rotating portion 121 and a second rotating portion 122 that are fixedly connected. The first rotating portion 121 and the second rotating portion 122 are connected by screws and rotate synchronously. The first rotating portion 121 is provided with a plug-in slot 123, and the second rotating portion 122 is provided with an abutting protrusion 124 and a positioning slot 125. Figure 4 As shown, the locking assembly 100 further includes a second fastener 140 , which passes through the second rotating portion 122 and the first rotating portion 121 in sequence and is threadedly connected to the mounting seat 200 , thereby achieving fixation of the mounting seat 200 and the second rotating member 120 .

[0129] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. An electric tool, characterized in that include: A main structure, comprising a driving member and a mounting member connected to the driving member; a tool head structure, the tool head structure including a locking assembly for connecting a mounting member and / or a processing member, the locking assembly being driven to switch between a first angular position and a second angular position, wherein in the first angular position, relative movement of the processing member and the mounting member is restricted, and in the second angular position, the restriction on relative movement of the processing member and the mounting member is released; The electric tool further comprises a mounting base, which is fixedly connected to the locking assembly. The mounting base is driven to drive the locking assembly to rotate synchronously so as to switch the locking assembly from the first angular position to the second angular position.

2. The electric tool according to claim 1, wherein: The locking assembly includes a first rotating member and a second rotating member, wherein the first rotating member is partially or entirely disposed through the second rotating member, the first rotating member and the second rotating member are capable of synchronous rotation, and the first rotating member is capable of axial movement relative to the second rotating member; Wherein, the mounting seat is connected to the second rotating member.

3. The electric tool according to claim 2, wherein: The mounting seat includes a supporting portion and an extending portion, and two ends of the extending portion are respectively connected to the supporting portion and the second rotating member.

4. The electric tool according to claim 2, wherein: Either one of the outer circumference of the first rotating member or the inner circumference of the second rotating member is provided with an inserting protrusion, and the other is provided with an inserting groove, wherein the inserting protrusion is embedded in the inserting groove, so that the first rotating member and the second rotating member can rotate synchronously.

5. The electric tool according to claim 1, wherein: The locking assembly defines a first mounting hole for the workpiece to pass through, and the hole wall of the first mounting hole is provided with a first accommodating groove. The locking assembly also includes a first limiting member located in the first mounting hole. When the locking assembly is in a first angular position, the first limiting member is passed through the mounting member and abuts against the workpiece. When the locking assembly is in a second angular position, the first limiting member moves into the first accommodating groove to disengage the first limiting member from the workpiece.

6. The electric tool according to claim 5, wherein: The processing piece has a second accommodating groove. When the locking assembly is in the first angular position, the first limiting member is inserted into the second accommodating groove; when the locking assembly is in the second angular position, the first limiting member exits the second accommodating groove. Wherein, the second accommodating groove is provided on at least one side of the workpiece along its width direction.

7. The electric tool according to claim 1, wherein: The cutter head structure further includes a first housing for accommodating the locking assembly, wherein either the locking assembly or the first housing is provided with a positioning protrusion, and the other is provided with a positioning slot, and the positioning protrusion moves in the positioning slot as the locking assembly rotates; When the locking assembly is at the first angular position, the positioning protrusion is at one end of the positioning slot; when the locking assembly is at the second angular position, the positioning protrusion is at the other end of the positioning slot.

8. The electric tool according to claim 1, wherein: The cutter head structure also includes a first elastic member, one end of which is connected to the locking assembly, and the other end is connected to the mounting member. The first elastic member is configured such that when the locking assembly switches from the first angular position to the second angular position, the first elastic member undergoes elastic deformation and has a tendency to drive the locking assembly to switch back to the first angular position.

9. The electric tool according to claim 1, wherein: The power tool further includes an unlocking assembly having a first state and a second state. In the first state, the unlocking assembly is connected to the locking assembly, and the rotation of the locking assembly is restricted so that the locking assembly remains at the first angular position. In the second state, the rotation restriction of the locking assembly is released, so that the locking assembly can rotate to the second angular position.

10. The electric tool according to claim 9, wherein: The locking assembly includes an abutting protrusion, and the unlocking assembly includes a second limiting member and an unlocking button. The second limiting member includes a first end, a second end, and a rotating shaft located between the first end and the second end. In the first state, the first end abuts against the abutting protrusion; the unlocking button is connected to the second end. Wherein, when the unlocking button is pressed, the first end rotates around the rotating shaft and disengages from the abutting protrusion, so that the unlocking component switches from the first state to the second state.

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