Power tool

Abstract

The utility model discloses a kind of electric tools.The electric tool of the utility model includes locking assembly and unlocking assembly, locking assembly is used to connect mounting piece and processing piece, locking assembly is driven and can switch in first angular position and second angular position, when in first angular position, the relative movement of processing piece and mounting piece is limited, when in second angular position, the limitation of relative movement of processing piece and mounting piece is cancelled;Unlocking assembly has first state and second state, in first state, unlocking assembly and locking assembly abut, the rotation of locking assembly is limited, to make locking assembly keep in first angular position;In second state, the rotation limitation of locking assembly is cancelled, to make locking assembly can rotate to second angular position.The electric tool of the application maintains the stable abutment of locking assembly by unlocking assembly, effectively prevent processing piece from falling off due to excessive reaction force, greatly improve operation safety.

Description

Technical Field

[0001] This utility model relates to the field of power tools. Background Technology

[0002] Power tools typically include a drive unit, a mounting unit, and a machining part. The machining part is connected to the drive unit via the mounting unit and is driven by the mounting unit to rotate or move, thereby machining the object to be processed. Taking a reciprocating saw as an example, the mounting unit is the reciprocating rod, and the machining part is the saw blade. The reciprocating saw performs sawing through the reciprocating motion of the saw blade. Alternatively, a power tool can also be a grinder, with the mounting unit being the rotating head and the machining part being the grinding disc.

[0003] In existing technologies, power tools often have structures that facilitate the assembly and disassembly of workpieces. For example, the workpiece can be unlocked by rotating its clamping structure (which causes the torsion spring to deform elastically). After the workpiece is replaced, the torsion spring returns to its elastic deformation, causing the clamping structure to reset and retain the workpiece. When the workpiece is cutting an object, it is continuously subjected to the force feedback from the object. When the force is too large, it can cause the torsion spring to deform, leading to the risk of the workpiece falling off and potentially causing a safety accident. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a power tool that maintains stable contact with the locking component through an unlocking component, effectively preventing the workpiece from falling off due to excessive reaction force, and significantly improving operational safety.

[0005] The power tool according to a first aspect embodiment of the present invention includes:

[0006] A locking component for connecting a mounting component and a machining component, the locking component being driven to switch between a first angular position and a second angular position, wherein in the first angular position, relative movement between the machining component and the mounting component is restricted, and in the second angular position, the restriction on relative movement between the machining component and the mounting component is released;

[0007] The unlocking component has a first state and a second state. In the first state, the unlocking component abuts against the locking component, and the rotation of the locking component is restricted to keep the locking component at a first angular position. In the second state, the rotation restriction of the locking component is released, so that the locking component can rotate to the second angular position.

[0008] The power tools according to the embodiments of this utility model have at least the following beneficial effects:

[0009] During operation, the power tool of this application maintains a stable contact with the locking component, ensuring a tight connection between the workpiece and the mounting component. It no longer relies on the elastic force of a torsion spring to maintain the locking state of the locking component, thus effectively preventing the workpiece from falling off due to excessive reaction force and significantly improving operational safety. When it is necessary to change the workpiece, by switching the unlocking component to the second state and then rotating the locking component to the second angle position, the workpiece and the mounting component can be easily separated, facilitating quick workpiece replacement. The operation is simple and efficient.

[0010] According to some embodiments of the present invention, the power tool further includes a first housing, and the unlocking component includes an unlocking button protruding from the outer peripheral surface of the first housing. The unlocking button is configured to drive the unlocking component to switch from the first state to the second state when pressed.

[0011] According to some embodiments of the present invention, the locking component includes an abutting protrusion, and the unlocking component further includes a second limiting member, the second limiting member including 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 second end is connected to the unlocking button.

[0012] When the unlock button is pressed, the first end rotates around the rotation axis and disengages from the abutment protrusion.

[0013] According to some embodiments of the present invention, the unlocking component further includes a second elastic element, which is sleeved on the rotating shaft. One end of the second elastic element is connected to the second limiting element. When the second limiting element rotates, the second elastic element undergoes elastic deformation and tends to drive the second limiting element to reset.

[0014] According to some embodiments of the present invention, the first housing includes a locking protrusion. In the first state, the first end abuts against the abutting protrusion on one side along the circumference of the locking component, and abuts against the locking protrusion on the other side.

[0015] According to some embodiments of the present invention, the first housing includes a first sub-housing, a second sub-housing and a third sub-housing arranged sequentially along its axial direction, wherein the second sub-housing and the third sub-housing together define a third mounting hole through which the unlocking button passes;

[0016] The second sub-shell is connected to the third sub-shell by screws, and the first sub-shell is connected to the second sub-shell by snap-fit.

[0017] According to some embodiments of the present invention, the locking assembly includes a first rotating member and a second rotating member. The first rotating member passes through the second rotating member and is slidably connected to the second rotating member. One of the outer peripheral surface of the first rotating member and the inner peripheral surface of the second rotating member is provided with a plugging protrusion, and the other is provided with a plugging groove. The plugging protrusion is embedded in the plugging groove so that the first rotating member and the second rotating member can rotate synchronously.

[0018] According to some embodiments of the present invention, the power tool further includes a mounting base, which is fixedly connected to the second rotating member. The mounting base is driven to rotate and drives the first rotating member to rotate synchronously, so as to switch the angular position of the locking component.

[0019] According to some embodiments of the present invention, the mounting base includes a supporting portion and an extension portion, the two ends of the extension portion being connected to the supporting portion and the second rotating member respectively, so as to define a protective space for the mounting member to extend out between the supporting portion and the second rotating member.

[0020] According to some embodiments of the present invention, the power tool further includes a mounting component, a driving component, and a transmission component. The mounting component is used to connect with the workpiece. The driving component includes a motor and an output shaft connected to the motor. The transmission component connects the output shaft and the mounting component respectively, and is used to convert the rotational input provided by the output shaft into linear reciprocating drive of the mounting component.

[0021] The mounting component is coaxially arranged with the output shaft.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of the power tool according to an embodiment of the present utility model;

[0025] Figure 2 This is a cross-sectional view of the power tool according to an embodiment of the present utility model;

[0026] Figure 3 This is an exploded view of the cutter head structure according to an embodiment of the present invention;

[0027] Figure 4 This is an exploded view of the mounting base and locking assembly according to an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the locking component of this utility model as viewed from front to back.

[0029] Figure 6 for Figure 5 Sectional view along the BB direction;

[0030] Figure 7 This is a schematic diagram of the second sub-shell of this utility model as viewed from back to front.

[0031] Figure 8 This is an exploded view of the main structure of an embodiment of the present utility model;

[0032] Figure 9 for Figure 2 Enlarged view of region A in the middle;

[0033] Figure 10 This is a partial structural diagram of the cutter head structure in an embodiment of the present utility model;

[0034] Figure 11 for Figure 10 A sectional view of the middle structure;

[0035] Figure 12 This is a schematic diagram of the drive component and the balancing component according to an embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram showing the connection between the first housing and the second housing in an embodiment of the present utility model;

[0037] Figure 14 This is an exploded view of the first and second shells according to an embodiment of the present invention;

[0038] Figure 15 This is a top view of the power tool according to an embodiment of the present utility model;

[0039] Figure 16 for Figure 15 Schematic diagram of the cross section along the CC direction;

[0040] Figure 17 This is an enlarged schematic diagram of the front end of the power tool according to an embodiment of the present utility model;

[0041] Figure 18 This is a schematic diagram illustrating another limiting method for the first limiting member in an embodiment of this utility model.

[0042] Figure label:

[0043] Cutter head structure 10;

[0044] Locking assembly 100; first rotating member 110; first mounting hole 111; first receiving groove 112; insertion protrusion 113; second rotating member 120; first rotating part 121; second rotating part 122; insertion groove 123; abutment protrusion 124; positioning slot 125; first limiting member 130; second fastener 140; first elastic member 150;

[0045] Mounting base 200; Supporting part 210; Extension part 220;

[0046] First housing 300; First sub-housing 310; Second sub-housing 320; Third sub-housing 330; First main body 331; First connecting part 332; Snap-fit ​​groove 3321; Limiting protrusion 3322; Snap-fit ​​protrusion 333; Positioning protrusion 334; First accommodating cavity 340;

[0047] Unlocking component 400; second limiting component 410; first end 411; second end 412; rotating shaft 413; unlocking button 420; second elastic component 430;

[0048] Main structure 50;

[0049] 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 part 560; Snap-fit ​​protrusion 561; Sleeve 570; Heat dissipation hole 571; First fastener 580; Second main body part 590; Adapter part 595;

[0050] Drive assembly 600; drive component 610; motor 611; output shaft 612; bevel gear 613; mounting component 620; first guide groove 621; snap ring 622; transmission component 630; first eccentric protrusion 631; second eccentric protrusion 632; bevel gear portion 633; ​​battery 640; bushing 650; first abutment portion 651; second abutment portion 652; third limiting component 660; third abutment portion 661; third elastic component 670;

[0051] Control component 700; switch button 710; adjustment button 720; sliding rheostat 730; display screen 740; control board 750; second bracket 760;

[0052] Balancing component 800; balancing block 810; first support 820; second guide groove 821;

[0053] Machined part 90; Second receiving groove 91; Detailed Implementation

[0054] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0055] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0057] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0058] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] This application discloses a power tool, which can be a reciprocating saw, using a reciprocating workpiece 90 to perform sawing for cutting sheets, pipes, profiles, cables, or other materials. Alternatively, it can be a grinder, using a rotating workpiece 90 to perform grinding or polishing for surfaces of materials such as stone and metal. The power tool can also be other machines, such as electric screwdrivers, electric drills, etc., which will not be listed here. It should be noted that, for ease of understanding, the following embodiments use a reciprocating saw as a specific example of a power tool, but it should not be construed as meaning that the structure of this application can only be applied to reciprocating saws.

[0060] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, the power tool includes a main body structure 50 and a cutting head structure 10. The main body structure 50 is used to hold and adjust the working parameters of the power tool. Its housing contains a control component 700, a drive component 600, and a balancing component 800. The drive component 600 provides power, the control component 700 precisely adjusts the sawing speed, and the balancing component 800 ensures stable operation. The cutting head structure 10 is used to mount and fix the workpiece 90 and connect it to the drive component 600, allowing the workpiece 90 to move reciprocally. The housing of the cutting head structure 10 contains a locking component 100 and an unlocking component 400. The locking component 100 fixes the workpiece 90 to enable transmission from the drive component 600 to the workpiece 90, while the unlocking component 400 releases the workpiece 90 for easy replacement or adjustment.

[0061] In some embodiments, the drive assembly 600 of the main structure 50 includes a drive member 610 and a mounting member 620. The mounting member 620 is directly or indirectly connected to the output shaft 612 of the drive member 610. For example, the drive member 610 may be a telescopic motor with an output shaft that reciprocates axially, so that the output shaft can be directly connected to the mounting member 620 to drive the mounting member 620 to reciprocate linearly. Alternatively, the drive member 610 may 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 drive member 610 may also be an air pump, a hydraulic cylinder, or other power source, such as... Figure 8 In the illustrated embodiment, the drive unit 610 is preferably a rotary motor 611, which achieves efficient power conversion through a gear transmission mechanism, ensuring stable high-frequency reciprocating motion of the workpiece 90, and facilitating the compaction and miniaturization of power tools.

[0062] The locking component 100 of the cutter head structure 10 is used to connect the mounting part 620 and / or the workpiece 90. It is understood that the workpiece 90 is prone to wear during high-speed cutting, and needs to be replaced promptly to ensure cutting efficiency and accuracy. Therefore, the locking component 100 is configured to allow for quick assembly and disassembly of the workpiece 90. Specifically, the locking component 100 can be switched between a first angular position and a second angular position. In the first angular position, the workpiece 90 and the mounting part 620 are fixedly connected, and their relative movement is restricted, allowing for synchronous reciprocating motion. In the second angular position, the movement restriction between the workpiece 90 and the mounting part 620 is lifted, allowing the workpiece 90 to be freely disassembled and replaced. Thus, when the operator notices wear on the workpiece 90, they first control the drive component 600 to stop driving via the control component 700, and then manually or electrically drive the locking component 100 from the first angular position to the second angular position, allowing the workpiece 90 to be easily disassembled. Subsequently, after installing the new workpiece 90 and restoring the locking assembly 100 to the first angle position, the operator can restart the drive assembly 600 to continue the efficient sawing operation.

[0063] The cutting head structure 10 often also includes a mounting base 200, which is located at the foremost end of the power tool. The workpiece 90 passes through the mounting base 200 and is inserted into the housing of the cutting head structure 10. The mounting base 200 serves two purposes: firstly, it protects the workpiece 90, reducing the risk of the operator touching the workpiece 90 while holding the power tool; secondly, the mounting base 200 can be used to contact the object to be cut, improving cutting stability and ensuring a smooth cutting process.

[0064] However, in existing technologies, the mounting base is often fixedly connected to the housing of the cutter head structure, and the mounting base often interferes with the replacement of workpieces. When replacing workpieces, the operator needs to go around 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 workpieces, restricts the operator's operating space, and makes the replacement of workpieces inconvenient and inefficient.

[0065] Therefore, in this embodiment, the mounting base 200 is fixedly connected to the locking component 100, so that the mounting base 200 can be driven to synchronously rotate the locking component 100, thereby switching the locking component 100 from a first angular position to a second angular position. Thus, when changing the workpiece 90, the operator only needs to rotate the mounting base 200 to easily disconnect the workpiece 90 from the mounting component 620, avoiding the cumbersome operation of bypassing the mounting base 200, significantly improving the convenience and efficiency of changing the workpiece 90. Figure 1As shown, the end face of the mounting base 200 is also provided with an indicator mark to indicate the rotation direction, the first angle position (i.e., the locked position), and the second angle position (i.e., the unlocked position) of the mounting base 200, making the operation more intuitive and easy to understand.

[0066] In some embodiments, the locking assembly 100 includes a rotating member, which may be either a second rotating member 120 (described below) or a first rotating member 110 and a second rotating member 120 as a non-removable integral structure. The rotating member is connected to the mounting base 200, thereby rotating synchronously with the mounting base 200 to lock and unlock the workpiece 90. Figures 3 to 5 In the illustrated embodiment, the locking assembly 100 includes two rotating members, which are designated as the first rotating member 110 and the second rotating member 120 for easy distinction. The first rotating member 110 partially or completely passes through the second rotating member 120, and the workpiece 90 passes through the first rotating member 110. The first rotating member 110 and the second rotating member 120 are driven to rotate synchronously, and the first rotating member 110 is axially movable relative to the second rotating member 120, thereby enabling the first rotating member 110 to move synchronously with the workpiece 90. The mounting base 200 is connected to the second rotating member 120, thus the mounting base 200 has rotational freedom but no translational freedom, providing stable support for the workpiece 90. When the first rotating member 110 moves axially, the workpiece 90 also moves accordingly. On the one hand, the synchronous movement of the first rotating member 110 with the workpiece 90 can provide a certain supporting force to the workpiece 90 and reduce the vibration of the workpiece 90 when moving at high speed. On the other hand, the first rotating member 110 is provided with a limiting structure for connecting the workpiece 90 and the mounting member 620. The rotation of the first rotating member 110 relative to the workpiece 90 can realize the locking and unlocking of the workpiece 90.

[0067] Furthermore, the mounting base 200 includes a supporting portion 210 and an extension portion 220, such as... Figure 4 As shown, the extension 220 extends along the axial direction of the power tool, and its two ends are connected to the abutment 210 and the second rotating member 120, respectively. The abutment 210 is used to abut against the object to be cut. Due to the presence of the extension 220, the abutment 210 is positioned away from the second rotating member 120, thereby defining a protective space between the abutment 210 and the second rotating member 120. The design of the protective space reduces the risk of the operator accidentally touching the workpiece 90 during operation, without affecting the abutment support function of the mounting base 200.

[0068] Furthermore, based on the foregoing, the first rotating member 110 and the second rotating member 120 can rotate synchronously and move relative to each other. To achieve this effect, as follows: Figure 4 and Figure 5As shown, the outer peripheral surface of the first rotating member 110 is provided with a plugging protrusion 113, and the inner peripheral surface of the second rotating member 120 is provided with a plugging groove 123 that mates with the plugging protrusion 113. The plugging protrusion 113 extends along the axial direction of the power tool, and the plugging groove 123 also extends along the axial direction of the power tool. The plugging protrusion 113 is embedded in the plugging groove 123, thereby allowing the first rotating member 110 to move axially relative to the second rotating member 120. At this time, the plugging protrusion 113 moves axially within the plugging groove 123, and the plugging groove 123 serves as a guide for the movement of the plugging protrusion 113. When the second rotating member 120 rotates relative to the first rotating member 110, the groove wall of the plugging groove 123 abuts against the plugging protrusion 113, causing the first rotating member 110 to rotate synchronously with the second rotating member 120. It is understood that in other embodiments, the insertion groove 123 can be disposed on the outer peripheral surface of the first rotating member 110, and the insertion protrusion 113 can be disposed on the inner peripheral surface of the second rotating member 120, which can also achieve the above-mentioned effect.

[0069] To enable the locking assembly 100 to switch between the locked and unlocked states of the workpiece 90 when it rotates, in some embodiments (not shown in the figures), the inner wall surface of the first rotating member is provided with a plurality of flanges spaced apart 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 along the axial direction of the power tool; conversely, when the gap between the flanges aligns with the grooves on the workpiece 90, the workpiece 90 is unlocked and can be removed along the axial direction of the power tool.

[0070] Alternatively, in some other embodiments, the locking component 100 defines a first mounting hole 111 through which the workpiece 90 passes, specifically to Figures 4 to 6 In the illustrated embodiment, a first mounting hole 111 is formed on the first rotating member 110. The wall of the first mounting hole 111 has a first receiving groove 112, which is positioned corresponding to the second angular position. The locking assembly 100 also includes a first limiting member 130, located in the first mounting hole 111 and between the machined member 90 and the wall of the first mounting hole 111. When the locking assembly 100 is in the first angular position, the first limiting member 130 is abutted against by the wall of the first mounting hole 111, passing through the mounting member 620 and inserted into a groove or through hole on the machined member 90, thereby locking the mounting member 620 and the machined member 90. When unlocking, the locking component 100 rotates while the first limiting member 130 remains stationary. When the locking component 100 rotates to the second angle position, the first receiving groove 112 aligns with the first limiting member 130, and the first limiting member 130 falls into the first receiving groove 112, thereby disengaging the first limiting member 130 from the workpiece 90 and unlocking the workpiece 90.

[0071] Furthermore, in such Figure 5In the embodiment shown, the hole wall of the first mounting hole 111 and the groove wall of the first receiving groove 112 are smoothly transitioned. That is, the hole diameter of the first mounting hole 111 gradually increases until it connects with the groove wall of the first receiving groove 112, ensuring that the first limiting member 130 smoothly transitions during rotation and avoids jamming.

[0072] Additionally, a retaining ring 622 is connected to one end of the mounting part 620 that connects to the machined part 90 (e.g., Figure 17 As shown), the retaining ring 622 is located on the side of the first rotating member 110 away from the first receiving cavity. The retaining ring 622 is used to limit the axial displacement of the first limiting member 130 and prevent the first limiting member 130 from falling out of the front 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 provided on the inner wall of the first mounting hole 111, and the axial displacement of the first limiting member 130 is restricted by the groove wall.

[0073] It should be noted that in some embodiments (not shown in the figures), the machined part 90 has a through hole extending along its thickness direction, so that the first limiting member 130 can pass through the mounting member 620 and be inserted into the through hole, thereby achieving a secure locking between the machined part 90 and the mounting member 620. In such cases... Figure 6 In the illustrated embodiment, a second receiving groove 91 is provided on the side of the processed part 90 along its width direction. When the locking component 100 is in the first angular position, the first limiting member 130 is inserted into the second receiving groove 91. When the locking component 100 is in the second angular position, the first limiting member 130 is disengaged from the second receiving groove 91. It can be understood that the processed part 90 may have a second receiving groove 91 on one side, or it may be as follows: Figure 6 As shown, both sides are provided with a second receiving groove 91, corresponding to, as 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 limiting members 130 are correspondingly provided on the locking assembly 100. It can be understood that by limiting the workpiece 90 on both sides along the width direction, it is possible to effectively prevent the workpiece 90 from swaying when rotating at high speed, thereby improving the stability and safety of the workpiece 90.

[0074] It should be noted that, Figure 6 The dashed spherical object shown represents the first limiting member 130, wherein the first limiting member 130 indicated by numeral a is in a locked state inserted into the second receiving groove 91 of the workpiece 90, and the first limiting member 130 indicated by numeral b is in an unlocked state of being withdrawn from the second receiving groove 91 and falling into the first receiving groove 112.

[0075] In some embodiments, the housing of the blade structure 10 defines a first receiving cavity 340 for accommodating the locking assembly 100. It should be noted that, in order to distinguish it from the housing of the main body structure 50, the housing of the blade structure 10 is designated as the first housing 300, and the housing of the main body structure 50 is designated as the second housing 500.

[0076] 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 into the first housing 300, the positioning protrusion 334 is inserted into the positioning slot 125, and 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 a first angular position and a 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 component 100 to the second angle position, the positioning protrusion 334 moves in the positioning slot 125 until it abuts against the end wall of the positioning slot 125, thus providing a clear collision feedback to indicate to the operator that the locking component 100 has been successfully unlocked. Similarly, when the operator rotates the locking component 100 to the first angle position, or when the locking component 100 returns to the first angle position under the drive of the first elastic member 150, the positioning protrusion 334 will also abut against the other end wall of the positioning slot 125 to accurately position the locking component 100 in a position where the first limiting member 130 can be inserted into the second receiving slot 91 of the workpiece 90.

[0077] In some embodiments, the blade structure 10 further includes a first elastic member 150, one end of which is connected to the locking assembly 100, and the other end is connected to the mounting member 620, such as... Figure 6As shown, the first elastic element 150 is a torsion spring. One end of the torsion spring is inserted into the mounting component 620 for fixation, and the other end is inserted into the first rotating component 110 for fixation. Therefore, when the operator changes the workpiece 90, the locking component 100 is rotated from the first angle position to the second angle position against the elastic force of the torsion spring. During this process, the torsion spring undergoes elastic deformation and accumulates elastic potential energy, tending to drive the locking component 100 back to the first angle position. After the operator has changed the workpiece 90, the operator releases the locking component 100, and the torsion spring elastically returns to its original position, driving the locking component 100 to automatically reset to the first angle position, ensuring that the workpiece 90 and the mounting component 620 are securely locked again. The torsion spring design facilitates the interchange of workpiece 90 during installation and removal, eliminating the need for the operator to manually rotate the locking component 100 from the second angle position back to the first angle position. Furthermore, the elastic force of the torsion spring allows the locking component 100 to remain in the first angle position, reducing the risk of accidental unlocking due to vibration or other reasons during power tool operation, thus improving overall ease of use and safety.

[0078] In addition, to further enhance the safety of power tools and reduce the possibility of accidental unlocking, power tools are also equipped with an unlocking component 400. (Reference) Figure 3 and Figure 7 As shown, the unlocking component 400 provides additional fixation to the locking component 100, ensuring that it will not be accidentally unlocked during operation due to vibration or other external forces. The unlocking component 400 has a first state and a second state. In the first state, the unlocking component 400 is connected to the locking component 100, restricting the rotation of the locking component 100 and thus holding the locking component 100 in a first angular position. In the second state, the unlocking component 400 is disengaged from the locking component 100, allowing the locking component 100 to switch from the first angular position to the second angular position.

[0079] In order to effectively restrict the locking component 100 by the unlocking component 400, the locking component 100 includes an abutment protrusion 124 (see reference). Figure 4 and Figure 7 As shown, the unlocking component 400 includes a second limiting member 410 and an unlocking button 420. When the unlocking component 400 is in the first state, the second limiting member 410 is in close contact with the abutting protrusion 124, restricting the rotation of the locking component 100; when switched to the second state, the second limiting member 410 separates from the abutting protrusion 124, allowing the locking component 100 to rotate freely, ensuring operational safety and flexibility.

[0080] More specifically, such as Figure 7As shown, the second limiting member 410 includes a first end 411, a second end 412, and a rotating shaft 413. The rotating shaft 413 is located between the first end 411 and the second end 412 and is fixedly connected to the first housing 300. The second limiting member 410 is sleeved on the rotating shaft 413 and can rotate around the rotating shaft 413. The first end 411 of the second limiting member 410 is used to abut against the abutting protrusion 124, and the second end 412 is connected to the unlocking button 420. The unlocking button 420 protrudes from the surface of the first housing 300. When the operator presses the unlocking button 420, the unlocking button 420 drives the second end 412 of the second limiting member 410 to rotate around the rotating shaft 413, thereby causing the first end 411 of the second limiting member 410 to lift up and separate from the abutting protrusion 124. The unlocking component 400 switches from the first state to the second state, and the locking component 100 can rotate freely, making it convenient for the operator to change the workpiece 90.

[0081] In some embodiments, such as Figure 1 and Figure 2 As shown, the second housing 500 of the main body structure 50 includes a gripping section 530 and a control section 540 arranged sequentially along its axial direction. The interior of the second housing 500 defines a second receiving cavity 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 body structure 50. The control assembly 700 is used to control the drive member 610.

[0082] In existing technologies, the control components are often located together with the motor in the gripping part of the main structure, resulting in a large diameter gripping part that is inconvenient for operators to grip and also hinders the miniaturization and compactness of the reciprocating saw.

[0083] Therefore, in this embodiment, the positions of the control component 700 and the drive component 600 have been optimized: as follows Figure 2 , Figure 8 and Figure 9 As shown, the drive component 610 is disposed in the second receiving cavity 550 of the grip section 530, and the mounting component 620 and the control component 700 are disposed in the second receiving cavity 550 of the control section 540, thereby effectively reducing the diameter of the grip section 530 and improving grip comfort. Through the reasonable layout in the second receiving cavity 550 of the control section 540, both the mounting component 620 and the control component 700 can be accommodated in the control section 540, realizing the overall miniaturization and compactness of the reciprocating saw.

[0084] Furthermore, in order to increase the capacity of the control section 540 and reduce the grip difficulty of the holding section 530, the dimensions of the control section 540 and the holding section 530 are designed separately, such as... Figure 2 , Figure 8and Figure 15 As shown, the maximum width of the control section 540 of the second housing 500 is not less than the maximum width of the grip section 530, so that the grip section 530 is easier to grip 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.

[0085] In some embodiments, the second accommodating cavity 550 of the control section 540 includes a first accommodating region 551 and a second accommodating region 552, which are located on the upper and lower sides or the left and right sides of the mounting member 620, respectively. It is understood that, with the axis of the output shaft 612 of the drive member 610 as the front-back direction, the up-down direction and the left-right direction are perpendicular to each other and both perpendicular to the front-back direction.

[0086] Taking a reciprocating saw as an example of a power tool, the mounting part 620 has a flat structure. (See reference...) 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 region 551 and a second accommodating region 552, wherein the first accommodating region 551 is used to accommodate the control assembly 700. Since the mounting member 620 in this application separates the accommodating space of the control section 540, the structure and dimensions of the control assembly 700 are designed so that it can be perfectly accommodated in the first accommodating region 551 without interfering with the mounting member 620, thereby improving the utilization rate of the second accommodating cavity 550.

[0087] In some embodiments, such 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 region 552 of the control section 540, and is located on both sides of the mounting member 620, respectively, along with the control assembly 700. The mounting member 620 is connected to the drive member 610 via the transmission member 630, which converts the rotational input provided by the drive member 610 into linear reciprocating drive of the mounting member 620.

[0088] Furthermore, in some embodiments (not shown in the figures), the transmission member 630 and the mounting member 620 can employ a crank-slider structure to achieve the conversion. In such... Figure 11 and Figure 12In the illustrated embodiment, the transmission component 630 and the mounting component 620 employ a structure consisting of a bevel gear 613 and an eccentric shaft to achieve efficient conversion from rotary input to linear reciprocating motion. Specifically, the output shaft 612 of the drive component 610 is connected to the end of a bevel gear 613. The transmission component 630 has a ring of bevel teeth 633 along its circumference, which meshes with the bevel teeth 633 of the transmission component 630. The transmission component 630 also has an eccentric protrusion, which is offset from the rotation axis of the transmission component 630. The mounting component 620 has a first guide groove 621 perpendicular to the reciprocating direction. The eccentric protrusion engages with the first guide groove 621 of the mounting component 620, thereby achieving the conversion from rotary input to linear reciprocating motion. Furthermore, this transmission structure is relatively stable and easy to maintain, further improving the working efficiency and durability of the power tool, enabling it to maintain high performance even in a compact design.

[0089] In addition, the main structure 50 also includes a balancing component 800 disposed in the second accommodating cavity 550. The balancing component 800 is disposed in the second accommodating area 552 of the control section 540, further demonstrating the rational use of space in the second accommodating cavity 550 by the power tool of this application. Figure 11 and Figure 12 As shown, the balancing assembly 800 includes a balancing block 810, which is connected to the transmission component 630. The balancing block 810 and the mounting component 620 are respectively disposed on both sides of the transmission component 630. The transmission component 630 drives the balancing block 810 to reciprocate while driving the mounting component 620 to reciprocate. Furthermore, the direction of movement of the balancing block 810 is opposite to the direction of movement of the mounting component 620, so as to counteract the vibration caused by the movement of the mounting component 620 and improve the operational stability of the power tool.

[0090] Specifically, the transmission component 630 includes opposing first and second sides, such as... Figure 11 and Figure 12 As shown, an eccentric protrusion for insertion into the first guide groove 621 is provided on the first side surface, and a bevel tooth 633 is also provided on the first side surface. The second side surface is also provided with an eccentric protrusion for connection with the balance block 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 a through hole on the balance block 810 to convert the rotation of the transmission member 630 into linear drive of the balance block 810.

[0091] It should be noted that, in order to achieve the reverse movement of the mounting component 620 and the counterweight 810, when viewed along the axial direction of the transmission component 630, the line connecting the first eccentric protrusion 631 and the second eccentric protrusion 632 passes through the central axis of the transmission component 630 and is located on different sides of the central axis of the transmission component 630. It can be understood that the central axis of the transmission component 630 is not a solid line; this central axis extends along the axial direction of the transmission component 630, and the transmission component 630 is driven to rotate about the central axis. Furthermore, the line connecting the first eccentric protrusion 631 and the second eccentric protrusion 632 coincides with the direction of movement of the mounting component 620.

[0092] Furthermore, the balancing assembly 800 also includes a first bracket 820, which is fixedly connected to the second housing 500. The first bracket 820 supports the balancing block 810, ensuring its stability during reciprocating movement and reducing vibration. In addition, the first bracket 820 defines a second guide groove 821 along the direction of movement, in which the balancing block 810 is disposed.

[0093] In some embodiments, such as Figure 10 and Figure 15 As shown, the control assembly 700 includes a switch button 710 disposed on the second housing 500, a control board 750, and a second bracket 760 for mounting the control board 750. The second bracket 760 is disposed in the first accommodating area 551. The switch button 710 is electrically connected to the control board 750. The control board 750 controls the start and stop of the drive unit 610 through a circuit. Thus, the start and stop control of the drive unit 610 can be realized by pressing the switch button 710.

[0094] The switch button 710 has a first plane for being touched, and this first plane is parallel to the mounting member 620. It is understood 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 to accommodate components such as the second bracket 760. The control assembly 700 also includes a display screen 740, which displays the operating status and parameters of the power tool, such as speed and power consumption. The display screen 740 is electrically connected to the control board 750, allowing the user to monitor the tool's operation in real time. The display screen 740 has a second plane for displaying information, and this second plane is parallel to the mounting member 620. It is understood that the switch button 710 and the display screen 740 can be arranged as follows: Figure 15The switch button 710 and the display screen 740 can be arranged on the same plane, or they can be arranged on different sides of the mounting member 620, thus being 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 facilitates the improvement of space utilization in the second accommodating cavity 550.

[0095] In some embodiments, the control component 700, in addition to the switch button 710, also includes an adjustment button 720. The adjustment button 720 is electrically connected to the control board 750, and the control board 750 adjusts the rotational speed of the drive member 610 to regulate the frequency of the reciprocating motion of the workpiece 90. The adjustment button 720 is also located on the second housing 500, and the switch button 710 and the adjustment button 720 are spaced apart circumferentially along the second housing 500. During the use of the power tool, the switch button 710 is first pressed to start the drive member 610, and the workpiece 90 begins to reciprocate. Then, the frequency of the reciprocating motion of the workpiece 90 can be adjusted using the adjustment button 720 to precisely adjust for different material hardnesses and work requirements, ensuring optimal cutting results. It is understood that the circumferential spacing between the switch button 710 and the drive button facilitates one-handed operation. Figure 15 In the illustrated embodiment, the adjustment button 720 is located to the left of the switch button 710, making it easy for the operator to reach with their thumb for quick adjustment.

[0096] In some embodiments, the adjustment button 720 may be a knob, which can be rotated at different angles to correspond to different rotational speeds of the drive element 610. Figure 10 and Figure 15 In the illustrated embodiment, the adjustment button 720 is a sliding adjustment structure. A through slot extending axially is provided on the second housing 500, through which the adjustment button 720 passes and is slidably connected to the second housing 500. Corresponding to the position of the through slot, the control component 700 also includes a sliding rheostat 730. The sliding rheostat 730 is electrically connected to the drive component 610 via the control plate 750. When the adjustment button 720 slides, the resistance value of the sliding rheostat 730 changes, thereby adjusting the rotational speed of the drive component 610. The sliding rheostat 730 is fixed within the second housing 500 to ensure stable operation. The through slot design makes the operation of the adjustment button 720 smooth and provides a sliding guide for the adjustment button 720, improving the user experience.

[0097] In some embodiments, such as Figure 1 and Figure 15As shown, the control section 540 defines a protrusion 541. The distance from the protrusion 541 to the axis of the second housing 500 is greater than the distance from the rest of the second housing 500 to the axis. The switch button 710 and the display screen 740 are disposed on the protrusion 541. It is understood that the protrusion 541, on the one hand, places the switch button 710 and the display screen 740 in a conspicuous and inaccessible position, reducing the possibility of accidental activation of the switch button 710. On the other hand, the protrusion 541 provides a larger second receiving cavity 550, allowing the first receiving area 551 to accommodate more components than the second receiving area 552, to meet the installation requirements of the second bracket 760, the switch button 710, and the display screen 740.

[0098] In the existing technology, the output shaft of the motor is set parallel to the mounting part, which causes irregular vibration of the mounting part during the operation of the reciprocating saw. This affects the user experience of the operator and is prone to causing dangers such as the workpiece breaking and the reciprocating saw slipping out of the hand.

[0099] Therefore, in some embodiments of this 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 foregoing, the drive assembly 600 disposed 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 workpiece 90. The drive member 610 includes a motor 611 and an output shaft 612 connected to the motor 611. The transmission member 630 connects the output shaft 612 and the mounting member 620 respectively, and is used to convert the rotational input provided by the output shaft 612 into linear reciprocating drive of the mounting member 620. It should be noted that, referring to... Figure 11 As shown, in this embodiment, the mounting component 620 and the output shaft 612 are coaxially arranged. It should be explained that the coaxial arrangement of the mounting component 620 and the output shaft 612 means that the axis of the output shaft 612 passes through the mounting component 620. Through this coaxial arrangement, the vibration of the mounting component 620 is significantly reduced, improving the stability and safety of operation.

[0100] In some embodiments, the drive assembly 600 further includes a battery 640, which is electrically connected to the motor 611 via a power cable. Figure 2 and Figure 8 As shown, the battery 640 and the motor 611 are both located in the grip section 530 of the second housing 500. The battery 640 is located at the end of the drive member 610 away from the transmission member 630. That is, the transmission member 630, the drive member 610 and the battery 640 are arranged in sequence to form a compact structural layout. In addition, the output shaft 612 of the battery 640 and the drive member 610 are also coaxially arranged, so the entire power tool has a cylindrical structure, which is easy to grip and has a compact structure. The structure is also more compact and suitable for narrow working conditions.

[0101] In some embodiments, based on the foregoing, such as Figure 11 and Figure 12 As shown, the drive component 610 also includes a bevel gear 613 disposed at the end of the output shaft 612, and the transmission component 630 is provided with bevel teeth 633 distributed circumferentially and meshing with the bevel gear 613. The transmission component 630 is also provided with a first eccentric protrusion 631, and the mounting component 620 is also provided with a first guide groove 621. The first guide groove 621 extends perpendicular to the moving direction of the mounting component 620, and the first eccentric protrusion 631 passes through the first guide groove 621. Through the cooperation of the transmission component 630 and the mounting component 620, the conversion of rotary input into linear reciprocating drive is realized.

[0102] Furthermore, the drive assembly 600 also includes a bushing 650, such as Figure 11 and Figure 12 As shown, the bushing 650 is fitted onto the first eccentric protrusion 631, and the bushing 650 includes a first abutment portion 651, as shown... Figure 11 As shown, the lower surface of the mounting member 620 abuts against the first abutting part 651, thereby the first abutting part 651 supports and raises the mounting member 620 so that the mounting member 620 and the bevel tooth part 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.

[0103] Furthermore, the bushing 650 also 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 stepped surface for abutting against the lower surface of the mounting member 620. The second abutting portion 652 passes through the first guide groove 621. It should be noted that the bushing 650 can be made of soft materials such as rubber. The bushing 650 is fitted onto the first eccentric protrusion 631, and the first abutting portion 651 is located on the lower side of the mounting member 620, serving to support and dampen vibrations; the second abutting portion 652 is located in the first guide groove 621, which can effectively reduce the collision vibration when the first eccentric protrusion 631 slides in the first guide groove 621, and reduce wear.

[0104] In some embodiments, the drive assembly 600 further includes a third limiting member 660, which is disposed on the side of the mounting member 620 opposite to the transmission member 630, i.e., located in the first receiving region 551 of the control section 540. The third limiting member 660 includes a third abutment portion 661 extending along the moving direction of the mounting member 620, which 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 understood that the third abutment portion 661 may be a strip-shaped protrusion disposed on the side of the second bracket 760 near the mounting member 620, or it may be as follows: Figure 12 The rod-shaped structure shown. 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 part 661 is arranged parallel to the moving direction of the mounting member 620 and abuts against the mounting member 620, so as to guide the movement of the mounting member 620, restrict the movement of the mounting member 620 along the axis of the transmission member 630, and thus suppress the vibration of the mounting member 620.

[0105] Furthermore, the third limiting member 660 and the mounting member 620 are in flexible contact to avoid rigid contact affecting the movement of the mounting member 620. Specifically, the drive assembly 600 also includes a third elastic member 670 (see reference). Figure 12 As shown, the third elastic element 670 is connected to the third limiting element 660, so that the third limiting element 660 is subjected to a clamping force applied by the third elastic element 670 towards the mounting element 620. This ensures that the third abutting portion 661 maintains appropriate contact with the mounting element 620, ensuring stable guidance while allowing for minor adjustments. This effectively balances rigid restriction and flexible movement, improving the smoothness and durability of the overall transmission system. It is understood that the third elastic element 670 can be a spring or a rubber pad, with its elastic coefficient adjusted according to actual needs to ensure that appropriate clamping force is provided under different working conditions, further optimizing the movement trajectory of the mounting element 620 and reducing friction and noise.

[0106] In existing technologies, the housing of a reciprocating saw is often formed by joining a left and right housing, which are integrally injection molded. The connection between the cutter head structure and the main body structure is often small in diameter, resulting in poor rigidity at the connection point. During the cutting process, the cutter head structure abuts against the object to be cut through the mounting base. Due to the poor rigidity, the cutter head structure is prone to vibration and deformation relative to the main body structure, leading to problems such as poor cutting accuracy and trajectory deviation in the reciprocating saw.

[0107] Therefore, in some embodiments, the housing of the reciprocating saw has been optimized. Specifically, such as... Figure 1 , Figure 2 , Figure 13 and Figure 14 As shown, the cutting head structure 10 includes a first housing 300, which includes a first main body portion 331 and a first connecting portion 332 located at the rear end of the first main body portion 331 and connected to it. The main body structure 50 includes a second housing 500, which includes a second main body portion 590 and a second connecting portion 560 located at the front end of the second main body portion 590 and connected to it. 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.

[0108] It is understood that in this embodiment, the shell of the cutter head structure 10 and the shell of the main body structure 50 are injection molded separately and then assembled to form a whole. On the one hand, this helps to reduce the injection molding difficulty of the shell, and on the other hand, the two shells are overlapped at the junction of the cutter head structure 10 and the main body structure 50, thereby effectively improving the shell rigidity at the junction, reducing vibration deformation, and ensuring cutting accuracy and trajectory stability.

[0109] 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 body 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 defined as a 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 also include only the second sub-housing 320 and the third sub-housing 330. The first sub-housing 310 is a lampshade, and the first sub-housing 310 is arranged around the second sub-housing 320 to facilitate illumination during use.

[0110] Furthermore, the second housing 500 includes a fourth sub-housing 510 and a fifth sub-housing 520, which are sequentially arranged along a second direction that intersects with the first direction. Thus, during the assembly of the power tool housing, the fourth sub-housing 510 and the fifth sub-housing 520 can approach each other and fit together along the second direction. After fitting together, the fourth sub-housing 510 and the fifth sub-housing 520 together define the second main body portion 590 and the second connecting portion 560. This fitting design of the fourth sub-housing 510 and the fifth sub-housing 520 facilitates the fitting of the second connecting portion 560 onto the first connecting portion 332, and the second connecting portion 560 formed by this fitting method can fit tightly with the first connecting portion 332.

[0111] In some embodiments (not shown in the figures), the first connecting portion 332 and the second connecting portion 560 are connected by adhesive bonding. Figure 14In the illustrated embodiment, the outer peripheral surface of the first connecting portion 332 is provided with a snap-fit ​​groove 3321, and the inner wall surface of the second connecting portion 560 is provided with a snap-fit ​​protrusion 561. The snap-fit ​​protrusion 561 is embedded in the snap-fit ​​groove 3321, thereby restricting 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 around the axis. It is understood that in other embodiments, the snap-fit ​​groove 3321 may also be provided on the inner wall surface of the second connecting portion 560, and the snap-fit ​​protrusion 561 may be provided on the outer peripheral surface of the first connecting portion 332.

[0112] Furthermore, such as Figure 13 and Figure 14 As shown, a snap-fit ​​protrusion 561 is disposed on the inner wall surface of the second connecting portion 560, and the snap-fit ​​protrusion 561 and the snap-fit ​​groove 3321 extend along the second direction. The fourth sub-shell 510 is provided with a first sub-protrusion (not shown in the figure), and the fifth sub-shell 520 is provided with a second sub-protrusion 521. During the assembly of the fourth sub-shell 510 and the fifth sub-shell 520, the first sub-protrusion is inserted into the snap-fit ​​groove 3321 at one end, and the second sub-protrusion 521 is inserted into the snap-fit ​​groove 3321 at the other end, until the fourth sub-shell 510 and the fifth sub-shell 520 are completely assembled, thereby forming the aforementioned snap-fit ​​protrusion 561. The second housing 500 also includes a first fastener 580 for connecting the first sub-protrusion and the second sub-protrusion 521. The first fastener 580 passes through the through hole of the first sub-protrusion and is threadedly connected to the second sub-protrusion 521. Alternatively, the first fastener 580 passes through the second sub-protrusion 521 and is threadedly connected to the first sub-protrusion.

[0113] In some embodiments, the diameter at the junction of the blade 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 portion 590. The second connecting portion 560 and the second main body portion 590 are connected by a transition portion 595, such as... Figure 13 As shown, the second connecting portion 560 and the second main body portion 590 both extend axially along the second housing 500, and the transition portion 595 extends generally radially along the second housing 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 also 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 restricting the axial displacement of the first housing 300 and the second housing 500. It can be understood that when the fourth sub-housing 510 and the fifth sub-housing 520 are assembled to form the second connecting portion 560, the first connecting portion 332 extends into the second main body portion 590 and fits tightly against the inner wall of the transition portion 595.

[0114] In some embodiments, the drive member 610 is located within the second housing 500. The drive member 610 generates a large amount of heat during operation. To prevent overheating, such as... Figure 14 As shown, the second housing 500 is also provided with a first ventilation hole 531 and a second ventilation hole 532 that penetrate the housing wall. The first ventilation hole 531 and the second ventilation hole 532 are respectively located at both ends of the drive member 610 along the first direction, so as to form convection in the second housing 500, carry away the heat generated by the drive member 610, and prevent the power tool from overheating and causing performance degradation or damage.

[0115] In some embodiments, such as Figure 8 As shown, the battery 640 is also located within the second housing 500. The drive member 610 and the battery 640 are arranged sequentially along a first direction. A first ventilation hole 531 is located at the end of the battery 640 away from the drive member 610, and a second ventilation hole 532 is located at the end of the drive member 610 away from the battery 640. This forms a convection path through the battery 640 and the drive member 610, reducing the rate of temperature rise of the battery 640 and the drive member 610 and maintaining them at a suitable operating temperature. Furthermore, a heat dissipation assembly (not shown in the figure) may also be provided within the second housing 500 to further improve heat dissipation efficiency.

[0116] In some embodiments, based on the foregoing, the second housing 500 includes a grip section 530 and a control section 540, wherein 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 grip and the control section 540 has good accommodating capacity. However, the grip section 530 and the control section 540 form a stepped shaft structure, which is not aesthetically pleasing, and the operator's palm can easily block the ventilation holes on the grip section 530 when gripping, affecting the heat dissipation effect. Therefore, in this embodiment, as... Figure 1 As shown, the power tool also includes a socket 570, which is fitted onto the grip section 530 and transitions flush with the control section 540. The socket 570 may be made of metal, providing a good grip and thermal conductivity.

[0117] Furthermore, the sleeve 570 is provided with multiple heat dissipation holes 571, at least one of which corresponds to the first ventilation hole 531, and at least one of which corresponds to the second ventilation hole 532, so that airflow through the heat dissipation holes 571 forms effective convection with the ventilation holes, significantly improving the heat dissipation effect. Figure 1 In the embodiment shown, the heat dissipation holes 571 are evenly and densely distributed on the surface of the sleeve 570 to ensure smooth airflow, effectively reduce the temperature of the grip section 530, and prevent the heat dissipation path from being blocked when the operator grips it.

[0118] In existing technologies, structures are often designed to facilitate the assembly and disassembly of workpieces. For example, the workpiece can be unlocked by rotating its clamping structure (which causes the torsion spring to deform elastically). After the saw is replaced, the torsion spring returns to its elastic deformation, causing the clamping structure to reset and retain the workpiece. When the workpiece cuts an object, it is continuously subjected to the object's reaction force. If the reaction force is too large, it can cause the torsion spring to deform, leading to the risk of the workpiece falling off and potentially causing a safety accident.

[0119] In some embodiments, the cutting head portion of the power tool includes a locking component 100 and an unlocking component 400. The locking component 100 connects the mounting member 620 and the machining member 90. The locking component 100 is driven to switch between a first angular position and a second angular position. In the first angular position, relative movement between the machining member 90 and the mounting member 620 is restricted. In the second angular position, the restriction on relative movement between the machining member 90 and the mounting member 620 is released. To limit the stability of the locking component 100 in the first angular position, an unlocking component 400 is designed to prevent the locking component 100 from loosening. The unlocking component 400 has a first state and a second state. In the first state, the unlocking component 400 abuts against the locking component 100, and the rotation of the locking component 100 is restricted to keep the locking component 100 in the first angular position. In the second state, the rotation restriction of the locking component 100 is released, allowing the locking component 100 to rotate to the second angular position.

[0120] Therefore, during the operation of the power tool, the unlocking component 400 maintains stable contact with the locking component 100, ensuring a tight connection between the workpiece 90 and the mounting component 620. The locking component 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, thus significantly improving operational safety. When it is necessary to replace the workpiece 90, by switching the unlocking component 400 to the second state and then rotating the locking component 100 to the second angle position, the workpiece 90 can be easily separated from the mounting component 620, facilitating quick replacement of the workpiece 90. The operation is simple and efficient.

[0121] In some embodiments, the power tool further includes a first housing 300, and the unlocking component 400 includes an unlocking button 420 protruding from the outer peripheral surface of the first housing 300. When it is necessary to switch the unlocking component 400 to the second state, simply press the unlocking button 420, causing it to slide along the mounting hole to a predetermined position. The unlocking component 400 then changes from the first state to the second state. At this time, the rotation restriction of the locking component 100 is released, allowing the operator to easily rotate the locking component 100.

[0122] Furthermore, the locking assembly 100 includes an abutment protrusion 124, and the unlocking assembly 400 further includes a second limiting member 410 rotatably connected to the first housing 300. More specifically, the second limiting member 410 is disposed in the cavity defined by the second sub-housing 320 and the third sub-housing 330, and the second limiting member 410 is rotatably connected to the third sub-housing 330. The second limiting member 410 includes a first end 411, a second end 412, and a rotating shaft 413, which is located between the first end 411 and the second end 412, so that when the second end 412 is pressed down, the first end 411 is raised. The first end 411 is used to abut against 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 abutting protrusion 124. When the unlock button 420 is pressed, the first end 411 rotates around the rotating shaft 413 and disengages from the abutting protrusion 124. The unlocking component 400 then enters the second state, and the rotation restriction of the locking component 100 is released.

[0123] Furthermore, the unlocking component 400 is also equipped with an automatic reset structure. For example, the unlocking button 420 is connected to an elastic element. When the external force applied to the unlocking button 420 disappears, the elastic element drives the unlocking button 420 to reset, and also drives the second limit element 410 to reset. Or, in cases such as Figure 3 and Figure 7 In the illustrated embodiment, the unlocking assembly 400 further includes a second elastic element 430, which is a torsion spring sleeved on the rotating shaft 413. One end of the second elastic element 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 element 430 undergoes elastic deformation and tends to drive the second limiting member 410 to reset. When the external force applied to the unlocking button 420 disappears, the second elastic element 430 drives the second limiting member 410 to reset, and consequently, the unlocking button 420 resets.

[0124] In some embodiments, such 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 support to the second limiting member 410 to ensure its stability in the first state.

[0125] In some embodiments, such 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 sequentially along a first direction. The outer peripheral surfaces of the second sub-housing 320 and the third sub-housing 330 are respectively provided with grooves, forming a third mounting hole for the unlocking button 420 to pass through after the second sub-housing 320 and the third sub-housing 330 are assembled. Figure 3 and Figure 14 As shown, the second sub-shell 320 and the third sub-shell 330 are connected by screws, and the first sub-shell 310 is connected to the second sub-shell 320 by snap-fit. During assembly, the second sub-shell 320 and the third sub-shell 330 are first fixed together with screws, and then connected to the first sub-shell 310 by snap-fit. The first sub-shell 310 can cover the threaded connection structure on the second sub-shell 320, making the overall structure more aesthetically pleasing.

[0126] Additionally, the second rotating member 120 of the locking assembly 100 includes a first rotating part 121 and a second rotating part 122 fixedly connected, the first rotating part 121 and the second rotating part 122 being connected by screws and rotating synchronously. The first rotating part 121 is provided with an insertion groove 123, and the second rotating part 122 is provided with an abutment protrusion 124 and a positioning slot 125. For example... Figure 4 As shown, the locking assembly 100 also includes a second fastener 140, which passes through the second rotating part 122 and the first rotating part 121 in sequence and is threadedly connected to the mounting base 200, thereby fixing the mounting base 200 to the second rotating part 120.

[0127] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A power tool, characterized in that, include: A locking component for connecting a mounting component and a machining component, the locking component being driven to switch between a first angular position and a second angular position, wherein in the first angular position, relative movement between the machining component and the mounting component is restricted, and in the second angular position, the restriction on relative movement between the machining component and the mounting component is released; The unlocking component has a first state and a second state. In the first state, the unlocking component abuts against the locking component, and the rotation of the locking component is restricted to keep the locking component at a first angular position. In the second state, the rotation restriction of the locking component is released, so that the locking component can rotate to the second angular position.

2. The power tool according to claim 1, characterized in that, The power tool further includes a first housing, and the unlocking component includes an unlocking button protruding from the outer peripheral surface of the first housing. The unlocking button is configured to drive the unlocking component to switch from the first state to the second state when pressed.

3. The power tool according to claim 2, characterized in that, The locking component includes an abutting protrusion, and the unlocking component further includes a second limiting member, the second limiting member including a first end, a second end, and a rotational shaft located between the first end and the second end. In the first state, the first end abuts against the abutting protrusion; the second end is connected to the unlocking button. When the unlock button is pressed, the first end rotates around the rotation axis and disengages from the abutment protrusion.

4. The power tool according to claim 3, characterized in that, The unlocking component also includes a second elastic element, which is sleeved on the rotating shaft. One end of the second elastic element is connected to the second limiting element. When the second limiting element rotates, the second elastic element undergoes elastic deformation and tends to drive the second limiting element to reset.

5. The power tool according to claim 3, characterized in that, The first housing includes a locking protrusion. In the first state, the first end abuts against the abutting protrusion on one side along the circumference of the locking assembly, and abuts against the locking protrusion on the other side.

6. The power tool according to claim 2, characterized in that, The first housing includes a first sub-housing, a second sub-housing, and a third sub-housing arranged sequentially along its axial direction, wherein the second sub-housing and the third sub-housing together define a third mounting hole through which the unlock button passes; The second sub-shell is connected to the third sub-shell by screws, and the first sub-shell is connected to the second sub-shell by snap-fit.

7. The power tool according to claim 1, characterized in that, The locking assembly includes a first rotating member and a second rotating member. The first rotating member passes through the second rotating member and is slidably connected to the second rotating member. One of the outer peripheral surface of the first rotating member and the inner peripheral surface of the second rotating member is provided with a plugging protrusion, and the other is provided with a plugging groove. The plugging protrusion is embedded in the plugging groove so that the first rotating member and the second rotating member can rotate synchronously.

8. The power tool according to claim 7, characterized in that, The power tool also includes a mounting base, which is fixedly connected to the second rotating member. The mounting base is driven to rotate and drives the first rotating member to rotate synchronously, so as to switch the angle position of the locking component.

9. The power tool according to claim 8, characterized in that, The mounting base includes a supporting portion and an extension portion. The two ends of the extension portion are respectively connected to the supporting portion and the second rotating member, so as to define a protective space for the mounting member to extend out between the supporting portion and the second rotating member.

10. The power tool according to claim 1, characterized in that, The power tool further includes a mounting component, a drive component, and a transmission component. The mounting component is used to connect to the workpiece. The drive component includes a motor and an output shaft connected to the motor. The transmission component connects the output shaft and the mounting component respectively, and is used to convert the rotational input provided by the output shaft into linear reciprocating drive for the mounting component. The mounting component is coaxially arranged with the output shaft.

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