Electric devices and electric tools

Abstract

This invention relates to the field of electric cutting tools, and discloses an electric device and the same. The key technical features include a body, a drive assembly, and a fine-tuning assembly. The drive assembly is mounted on the body and includes a drive component. The fine-tuning assembly is circumferentially engaged with the drive component. The fine-tuning assembly allows for fine-tuning of the drive component or gears, preventing jamming between the drive assembly and the cutting mechanism, and facilitating the overall disassembly and assembly of the cutting assembly. The first, second, and third reset parts enable the push rod, rack, and knob to reset, allowing for multiple fine-tuning adjustments during the disassembly and assembly of the cutting mechanism to achieve optimal disassembly and assembly results.

Description

Technical Field

[0001] This invention relates to the field of electric cutting tools, and more specifically to electric devices and electric tools thereof. Background Technology

[0002] Electric cutting tools can be categorized into pruning machines or chainsaws, depending on the object being cut. Taking a pruning machine as an example, it is a garden tool used for cutting branches. It contains a cutting mechanism and a drive assembly. The cutting mechanism uses two stacked blades, and the drive assembly drives the two blades to reciprocate to achieve the cutting action.

[0003] After the shearing mechanism stops working, the connection between the shearing mechanism and the drive assembly may become stuck, making it difficult to disassemble the shearing mechanism. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an electric device and electric tools thereof to overcome the situation where the connection between the shearing mechanism and the drive component gets stuck.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electric device, wherein the electric device is adapted to be detachably connected to a shearing mechanism, the electric device including a body, a drive assembly, and a fine-tuning assembly, the drive assembly being disposed on the body, the drive assembly including a drive member, the fine-tuning assembly engaging circumferentially with the drive member to drive the drive member to rotate circumferentially from a deflection position to a reset position.

[0006] As a further improvement of the present invention, the drive member is provided with a spline, so that when the drive member is held in the reset position, the drive member can be splined to engage with the transmission member of the shearing mechanism.

[0007] As a further improvement of the present invention, the fine-tuning component includes a trigger part and a connecting part, the connecting part being tractively connected to the driving member, the trigger part being pressed and then twisted, wherein the connecting part is displaced by the trigger part.

[0008] As a further improvement of the present invention, the driving assembly further includes a gear, the driving member is driven by the gear, the fine-tuning assembly includes a trigger part and a connecting part, the connecting part meshes with the gear, the trigger part drives the gear to rotate circumferentially through the connecting part, thereby driving the driving member to rotate circumferentially.

[0009] As a further improvement of the present invention, the drive assembly further includes a gear, the drive member is driven by the gear, the gear is coaxially disposed on the drive member, and the drive member is driven to rotate coaxially by the gear.

[0010] As a further improvement of the present invention, the gear is fixedly connected to the drive member.

[0011] As a further improvement of the present invention, the connecting part includes a rack and a push rod hinged to the end of the rack. One side of the push rod is provided with a protrusion to mesh with the gear. A first reset part is provided between the push rod and the machine body to drive the push rod to reset.

[0012] As a further improvement of the present invention, the first reset part is a first compression spring, and the push rod has a groove on the side opposite to the protrusion, and one end of the first compression spring extends into the groove.

[0013] As a further improvement of the present invention, the fine-tuning component also includes a frame, and a second reset part is provided between the frame and the rack to drive the rack to reset, and the trigger part is used to drive the rack to move.

[0014] As a further improvement of the present invention, the triggering part includes a knob and a gear ring, the gear ring meshing with the rack, and rotating the knob causes the knob to drive the rack to move through the gear ring.

[0015] As a further improvement of the present invention, a shaft is fixedly connected to the knob, one end of the shaft passes through the frame and is movably connected to the frame, the gear ring is movably connected to the shaft, a locking block is provided inside the knob, a locking groove is provided on the side of the gear ring facing the knob, the locking groove is adapted to the locking block, and a third reset part is provided between the knob and the gear ring for driving the knob to reset.

[0016] As a further improvement of the invention, the fine-tuning component is driven by twisting when pressed.

[0017] The power tool includes the aforementioned electric device and shearing mechanism. The shearing mechanism is detachably connected to the drive component of the drive assembly. The shearing mechanism includes at least one transmission component, an eccentric component, and at least two blades. The drive component is driven by the transmission component to drive the eccentric component. The two blades are respectively driven by the eccentric component and reciprocate.

[0018] As a further improvement of the present invention, the transmission component and the eccentric component are integrally formed.

[0019] As a further improvement of the present invention, the shearing mechanism further includes a housing, on which at least one fastening element is provided, and an elastic element is provided between the fastening element and the housing, and the fastening element is fastened to the machine body.

[0020] The beneficial effects of the present invention are as follows: 1. A fine-tuning component is provided in the present invention, which can fine-tune the driving component or gear, prevent the driving component and the shearing mechanism from jamming each other, and facilitate the disassembly and assembly of the cutting component as a whole.

[0021] 2. A protrusion is set on the push rod, which moves within one tooth groove of the gear, thus controlling the range of fine adjustment;

[0022] 3. By setting fasteners on the outer shell, a detachable connection is formed between it and the machine body, which facilitates the disassembly and assembly of the outer shell, and thus the disassembly and assembly of the cutting components;

[0023] 4. Two fasteners are arranged opposite each other to increase the installation stability and firmness between the outer shell and the body;

[0024] 5. The first reset part, the second reset part and the third reset part are designed so that the push rod, the rack and the knob can be reset. During the disassembly and assembly of the shearing mechanism, multiple fine adjustments can be made to achieve the best disassembly and assembly effect. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0027] Figure 3 This is a top view of the internal structure of the present invention;

[0028] Figure 4 This is the present invention. Figure 2 Enlarged view of point A in the middle;

[0029] Figure 5 This is the present invention. Figure 3 Enlarged view of point B in the middle;

[0030] Figure 6 This is a schematic diagram of the shearing mechanism in this invention;

[0031] Figure 7 This is a schematic diagram of the internal structure of the shearing mechanism in this invention;

[0032] Figure 8 This is a schematic diagram of the internal structure of the machine body in this invention;

[0033] Figure 9 This is a schematic diagram of the blade section in this invention;

[0034] Figure 10 This is a schematic diagram of the structure of the driving component in this invention.

[0035] Reference numerals: 1. Body; 11. Power supply unit; 12. Housing; 1201. Operating bottom surface; 1202. Grip surface; 2. Drive assembly; 21. Drive component; 22. Gear; 23. Gear set; 24. Motor; 3. Fine adjustment assembly; 31. Trigger unit; 311. Knob; 312. Gear ring; 313. Shaft; 314. Locking block; 315. Slot; 316. Third reset unit; 32. Connecting part; 321. Rack; 322. Push rod; 3221. Groove; 323. Protrusion; 324. First reset unit; 33. Frame; 331. Second reset unit; 4. Shearing mechanism; 41. Transmission component; 42. Housing; 421. Buckle; 4211. Pressing part; 4212. Fastening part; 43. Eccentric component; 44. Blade; 5. Slot. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0037] Reference Figures 1 to 10 As shown, the electric device and electric tool of this embodiment include at least one electric device and a shearing mechanism detachably mounted on the electric device. The electric device includes a body 1, a drive assembly 2, and a fine-tuning assembly 3. The drive assembly 2 is disposed on the body 1 and includes a drive member 21. The drive assembly 2 also includes a motor 24 and a transmission gear set 23. The motor 24 is axially connected to the transmission gear set 23, and the transmission gear 22 is driven by the motor 24 to drive the drive member 21 to rotate. Since the shearing mechanism 4 is connected to the drive member 21 of the drive assembly 2 through a concave-convex limiting method, the drive member 21 of the drive assembly 2 has a reset position after being reset. When the drive member 21 is deflected to a deflected position relative to the reset position, the shearing mechanism 4 is not easily jammed into the drive member 21, resulting in a poor user experience when installing or removing the blade. By circumferentially engaging between the fine-tuning component 3 and the drive component 21, the drive component 21 is driven to rotate circumferentially from the deflection position to the reset position. When the drive component 21 deflects from the reset position to the deflection position, the drive component 21 is circumferentially adjusted by the fine-tuning component 3 to be rotated to the reset position. Then, the drive component 21 is smoothly engaged by the shearing mechanism 4, so that the shearing mechanism 4 is driven by the electric device to shear.

[0038] Preferably, the body 1 includes a power supply unit 11, a control module, and a housing 12. The power supply unit 11, the control module, and the drive assembly 2 are disposed in the housing 12, and the drive member 21 of the drive assembly 2 is exposed in the housing 12 so that the drive member 21 is detachably connected to the shearing mechanism 4. The housing 12 has at least one operating bottom surface 1201 and a gripping surface 1202 opposite to the operating bottom surface 1201. The drive member 21 is held on the operating bottom surface 1201 of the housing 12. The user holds the housing 12 and looks directly at the gripping surface 1202 of the housing 12. The shearing mechanism 4 is assembled on the operating bottom surface 1201 of the housing 12.

[0039] It is worth mentioning that the shearing mechanism 4 includes a transmission component 41, an eccentric component 43, and at least two blades 44. Preferably, the driving component 21 is driven by the transmission component 41 to drive the eccentric component 43, and the two blades 44 are respectively driven by the eccentric component 43 and reciprocate to achieve cutting. The fine-tuning component 3 is used to perform circumferential fine-tuning of the driving component 21.

[0040] Preferably, the transmission member 41 and the eccentric member 43 are integrally formed, such that the drive member 21 of the drive assembly 2 is driveably connected to the transmission member 41 to drive the eccentric member 43. Two blades 44 are respectively assembled to the transmission part and the eccentric part of the eccentric member 43, and the two blades 44 are drivenly connected to the eccentric member 43 in a deviated manner to be driven to reciprocate.

[0041] Each blade 44 has a cutting edge, and because the blades 44 are held relative to each other, the cutting edges of the reciprocating blades 44 are moved back and forth in close contact to cut the roots, stems, and leaves of the plant held between the blades 44. Optionally, the blades 44 can also be used to cut other objects, and the invention is not limited thereto.

[0042] The drive assembly 2 also includes a gear 22, and the drive member 21 is driven by the gear 22. The fine-tuning assembly 3 includes a trigger part 31 and a connecting part 32. The connecting part 32 meshes with the gear 22. The trigger part 31 drives the gear 22 to rotate circumferentially through the connecting part 32, thereby driving the drive member 21 to rotate circumferentially.

[0043] Preferably, the gear 22 is coaxially disposed on the drive member 21, and the drive member 21 is driven to rotate coaxially by the gear 22.

[0044] More preferably, the gear 22 and the drive member 21 are integrally formed.

[0045] Reference Figure 2 , Figure 4As shown, gear 22 is fixedly connected to drive member 21, and gear set 23 meshes with gear 22. Drive member 21 and gear 22 are connected by a key. A part of gear 22 extends downward out of body 1. The extended part is provided with external thread and splinedly connected to eccentric member 43. Fine adjustment component 3 includes trigger part 31 and connecting part 32. Connecting part 32 meshes with gear 22. Trigger part 31 is circumferentially fine-tuned and integrated with drive member 21 of gear 22 through connecting part 32. Gear 22 can be fine-tuned directly, which is more stable and the fine-tuning range is controllable. Additional gear 22 can be preset on drive member 21 to connect with fine adjustment component 3, which can reduce the space occupied by gear set 22.

[0046] It is worth mentioning that the driving component 21 is provided with an external spline, and the transmission component 41 is provided with an internal spline. The transmission component 41 is detachably connected to the driving component 21. When the driving component 21 is held in the reset position, the driving component 21 can be connected to the transmission component 41 of the shearing mechanism 4.

[0047] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the connecting part 32 includes a rack 321 and a push rod 322 hinged to the end of the rack 321. A protrusion 323 is provided on one side of the push rod 322. The push rod 322 and the protrusion 323 are integrally formed. The protrusion 323 is toothed to mesh with the gear 22. A first reset part 324 is provided between the push rod 322 and the machine body 1 to drive the push rod 322 to reset. The protrusion 323 includes a contact surface. When the protrusion 323 meshes with the gear 22, the contact surface contacts one of the tooth surfaces on the gear 22. The protrusion 323 moves in one tooth groove of the gear 22. During the movement of the rack 321, the push rod 322 drives the gear 22 to rotate by relying on the contact surface. At this time, the push rod 322 rotates away from the gear 22, the first compression spring is compressed, and the contact range between the contact surface and the tooth surface gradually decreases, realizing fine adjustment.

[0048] Reference Figure 2 , Figure 4 As shown, the first reset part 324 is a first compression spring. The push rod 322 has a groove 3221 on the side away from the protrusion 323. One end of the first compression spring extends into the groove 3221. The groove 3221 is circular to prevent the first compression spring from shifting position. One end of the first compression spring abuts against the inner wall of the groove 3221, and the other end abuts against the inner side wall of the body 1. The first compression spring and the third compression spring are arranged in parallel.

[0049] Reference Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the fine-tuning component 3 is driven by twisting after being pressed. The fine-tuning component 3 also includes a frame 33, which is vertical and perpendicular to the bottom of the body 1. The frame 33 has two threaded holes, and two bolts pass through the corresponding threaded holes to fix it to the body 1. There is a height difference between the two threaded holes. In order to prevent interference with the gear 22 and facilitate installation, a second reset part 331 is provided between the frame 33 and the rack 321 to drive the rack 321 to reset. The trigger part 31 is used to drive the rack 321 to move. The second reset part 331 is a second compression spring. A support is fixedly connected to the rack 321. The second compression spring is sleeved on the support to prevent the second compression spring from shifting position. One end of the second compression spring abuts against the rack 321, and the other end abuts against the frame 33. The length direction of the second compression spring is perpendicular to the length direction of the first compression spring. The trigger unit 31 includes a knob 311 and a gear ring 312. A through hole is provided on the body 1. A part of the knob 311 extends out of the through hole, allowing the user to press the knob 311. The gear ring 312 meshes with the rack 321, and the knob 311 is rotated so that the knob 311 drives the rack 321 to move through the gear ring 312.

[0050] Furthermore, when the trigger part 31 is pressed, the gear ring 312 meshes with the rack 321. When the trigger part 31 is twisted, the rack 321 is moved.

[0051] Reference Figure 3 and Figure 5As shown, a shaft 313 is fixedly connected to the knob 311. The shaft 313 is cylindrical, with one end penetrating the frame 33. A movable hole is provided on the frame 33, through which one end of the shaft 313 passes. The inner diameter of the movable hole is equal to the outer diameter of the shaft 313 to prevent the shaft 313 from shaking and to movably connect with the frame 33. A gear ring 312 is movably connected to the shaft 313. A locking block 314 is provided inside the knob 311, and the locking blocks 314 are evenly distributed around the circumference of the knob 311. A slot 315 is provided on the side of the gear ring 312 facing the knob 311, and the slot 315 is evenly distributed around the circumference of the gear ring 312. The slot 315 is adapted to the locking block 314. The locking block 314 includes a top surface, a bottom surface, and two intersecting surfaces. On the side, when the locking block 314 is inserted into the locking groove 315, the side of the locking block 314 fits against the inner wall of the locking groove 315. A third reset part 316 is provided between the knob 311 and the gear ring 312 to drive the knob 311 to reset. The third reset part 316 is a third compression spring. One end of the third compression spring abuts against the knob 311, and the other end abuts against the gear ring 312, so that under the action of external force, the button can be pressed towards the gear ring 312, so that the locking block 314 is inserted into the locking groove 315. Thus, when the knob 311 is rotated, the gear ring 312 can rotate accordingly. Under the action of no external force, under the action of the restoring force of the third compression spring, the knob 311 moves away from the gear ring 312 to reset. The first reset part 324, the second reset part 331, and the third reset part 316 can also be a spring with elastic deformation capability.

[0052] Reference Figures 1 to 8 As shown, the power tool includes the aforementioned electric device and a cutting mechanism 4. The cutting mechanism 4 is used for cutting and includes a transmission component 41. The transmission component 41 meshes with the driving component 21. After the driving component 2 drives the cutting mechanism 4 to move, the spline connection between the gear 22 and the eccentric component 43 will jam, making it difficult to disassemble the gear 22 and the eccentric component 43, thus making it difficult to disassemble the cutting mechanism 4. After fine-tuning the driving component 21, the gear 22 rotates synchronously, or after fine-tuning the gear 22, the driving component 21 rotates synchronously, changing the relative position between the gear 22 and the eccentric component 43, releasing the jamming situation, and allowing the gear 22 and the eccentric component 43 to be easily disassembled and assembled.

[0053] Reference Figure 6 and Figure 7 As shown, the shearing mechanism 4 also includes a housing 42, an eccentric component 43 and two blades 44. The two blades 44 are stacked on top of each other. The housing 42 is detachably connected to the body 1. The eccentric component 43 extends out of the housing 42. The extended part is provided with internal threads and is splinedly connected to the gear 22. The eccentric component 43 meshes with the drive component 21 to drive the two blades 44 to reciprocate and form a cutting motion.

[0054] Reference Figure 7 and Figure 8 As shown, at least one latching member 421 is provided on the outer casing 42. An elastic member is provided between the latching member 421 and the outer casing 42. The elastic member can be an elastic sheet or a compression spring. One end of the elastic member abuts against the latching member 421, and the other end abuts against the inside of the outer casing 42. The latching member 421 is latched to the body 1. The latching member 421 includes a pressing part 4211 and at least one fastening part 4212. There are two fastening parts 4212 on a single latching member 421. The two fastening parts 4212 are at the same height and parallel to each other. The pressing part 4211 can be circular or rectangular. Both the pressing part 4211 and the fastening part 4212 extend... The outer casing 42 has side holes and a top hole. The pressing part 4211 extends out of the outer casing 42 through the side holes, and the fastening part 4212 extends out of the outer casing 42 through the top hole. The fastening part 4212 includes a vertical plate and a horizontal plate, which are integrally formed. The vertical plate is fixedly connected to the pressing part 4211 or integrally formed. The vertical plate and the horizontal plate are arranged perpendicular to each other. The inner side of the body 1 has a connecting piece corresponding to the fastening part 4212. In this preferred embodiment, the body 1 has at least two slots 5. Each fastening part 4212 can be triggered to move and be inserted into the slot 5 of the body 1. After the fastening part 4212 is released, it is locked by the slot 5 of the body 1. Preferably, the fastening member 4212 is moved between the locked position and the unlocked position by the elastically deformable elastic member. When the fastening member 4212 is in the locked position, the elastic member is in a free state. When the fastening member 4213 is in the unlocked position, the elastic member is compressed and has a restoring force, so that the fastening member 4212 will not be moved arbitrarily after being inserted into the groove 5 of the body 1 and being limited.

[0055] Furthermore, there are four fastening portions 4212, and the four fastening portions 4212 are arranged at intervals and held in the housing 42. Each fastening portion 4212 can reciprocate relative to the housing 42 in a locked position and a disengaged position. The fastening portions 4212 are preferably held on the side of the housing 42 to reduce the height of the shearing mechanism 4 and also to reduce bumps caused by local protrusions on the surface.

[0056] It is worth mentioning that the connecting part of the body 1 can be implemented as a groove 5. In other modified embodiments, the way the body 1 is connected to the shearing mechanism 4 can also be implemented as magnetic attraction or locking.

[0057] Alternatively, the connector can also be implemented as a protrusion 5, and the fastener 421 is provided with a corresponding groove so that the fastener 421 is snapped into the protrusion 5 and connected to the body 1 so as to detachably install the shearing mechanism 4 and the body 1.

[0058] Working principle: When fine-tuning gear 22, pressing knob 311 compresses the third compression spring, causing the locking block 314 on knob 311 to engage with the slot 315 of gear ring 312. Rotating knob 311 drives gear ring 312 to rotate. Due to the meshing of gear ring 312 and rack 321, rack 321 moves in a direction perpendicular to the direction in which knob 311 is pressed. At this time, the second compression spring is compressed, and push rod 322 pushes gear 22 to rotate for fine-tuning. Push rod 322 rotates towards the side away from gear 22, compressing the first compression spring. This changes the relative position between gear 22 and eccentric component 43, allowing gear 22 and eccentric component 43 to be easily disassembled. After disassembly, releasing knob 311 resets push rod 322 under the restoring force of the first compression spring, rack 321 resets under the restoring force of the second compression spring, and knob 311 resets under the restoring force of the third compression spring.

[0059] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An electric actuator, wherein the electric actuator is adapted to be detachably connected to a shearing mechanism (4), characterized in that: The device includes a body (1), a drive assembly (2), and a fine-tuning assembly (3). The drive assembly (2) is mounted on the body (1) and includes a drive member (21). The fine-tuning assembly (3) engages circumferentially with the drive member (21) to drive the drive member (21) to rotate circumferentially from a deflection position to a reset position. The drive assembly (2) also includes a gear (22), which drives the drive member (21). The fine-tuning assembly (3) includes a trigger part (31) and a connecting part (32). 32) Engages with the gear (22), the trigger part (31) drives the gear (22) to rotate circumferentially through the connecting part (32), thereby driving the drive member (21) to rotate circumferentially; the connecting part (32) includes a rack (321) and a push rod (322) hinged to the end of the rack (321), a protrusion (323) is provided on one side of the push rod (322) to engage with the gear (22), and a first reset part (324) is provided between the push rod (322) and the machine body (1) to drive the push rod (322) to reset.

2. The electric device according to claim 1, characterized in that: The drive member (21) is provided with a spline, which allows the drive member (21) to be splined and connected to the transmission member (41) of the shearing mechanism (4) when the drive member (21) is held in the reset position.

3. The electric device according to claim 1, characterized in that: The fine-tuning component (3) includes a trigger part (31) and a connecting part (32). The connecting part (32) is connected to the driving member (21) in a driving manner. The trigger part (31) is pressed and then twisted, wherein the connecting part (32) is displaced by the trigger part (31).

4. The electric device according to claim 1, characterized in that: The drive assembly (2) further includes a gear (22), the drive member (21) is driven by the gear (22), the gear (22) is coaxially disposed on the drive member (21), and the drive member (21) is driven to rotate coaxially by the gear (22).

5. The electric device according to claim 4, characterized in that: The gear (22) is fixedly connected to the drive member (21).

6. The electric device according to claim 1, characterized in that: The first reset part (324) is a first compression spring. The top rod (322) has a groove (3221) on the side away from the protrusion (323), and one end of the first compression spring extends into the groove (3221).

7. The electric device according to claim 3, characterized in that: The fine-tuning component (3) also includes a frame (33), and a second reset part (331) is provided between the frame (33) and the rack (321) to drive the rack (321) to reset. The trigger part (31) is used to drive the rack (321) to move.

8. The electric device according to claim 7, characterized in that: The triggering part (31) includes a knob (311) and a gear ring (312). The knob (311) can be engaged with the rack (321). The gear ring (312) is moved by the knob (311) to drive the rack (321) to move.

9. The electric device according to claim 8, characterized in that: A shaft (313) is fixedly connected to the knob (311). One end of the shaft (313) passes through the frame (33) and is movably connected to the frame (33). The gear ring (312) is movably connected to the shaft (313). A locking block (314) is provided inside the knob (311). A slot (315) is provided on the side of the gear ring (312) facing the knob (311). The slot (315) is adapted to the locking block (314). A third reset part (316) is provided between the knob (311) and the gear ring (312) for driving the knob (311) to reset.

10. A power tool, characterized in that: The device includes an electric actuator and a shearing mechanism (4) as described in any one of claims 1 to 9, wherein the shearing mechanism (4) is detachably connected to the drive member (21) of the drive assembly (2), and the shearing mechanism (4) includes at least one transmission member (41), an eccentric member (43) and at least two blades (44), wherein the drive member (21) is drivenly connected to the transmission member (41) to drive the eccentric member (43), and the two blades (44) are respectively drivenly connected to the eccentric member (43) and reciprocate.

11. The power tool according to claim 10, characterized in that: The transmission component (41) and the eccentric component (43) are integrally formed.

12. The power tool according to claim 10, characterized in that: The transmission component (41) is provided with a spline, and the transmission component (41) is connected to the drive component (21) by a spline connection.

13. The power tool according to claim 10, characterized in that: The transmission component (41) is provided with an internal spline, and the driving component (21) is provided with an external spline, wherein the transmission component (41) is connected to the driving component (21) by a spline connection.

14. The power tool according to claim 10, characterized in that: The shearing mechanism (4) further includes a housing (42), on which at least one fastener (421) is provided. An elastic element is provided between the fastener (421) and the housing (42), and the fastener (421) is fastened to the body (1).

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