Cutting device

Abstract

A cutting device comprises a machine body, a driving mechanism, an output shaft and a cutting piece, and a switch, a trigger and a linkage mechanism are arranged on the machine body; the linkage mechanism comprises a shaft lock connecting rod rotating around the rotating axis, a shaft lock plate and a locking block, and the locking block can move relative to the trigger; the shaft locking plate is provided with a first connecting part and is provided with an output shaft unlocking position and an output shaft locking position; the locking block is provided with a second connecting part and is provided with a trigger unlocking position and a trigger locking position. The linkage mechanism has an initial state and a locking state, in the initial state, the shaft locking piece is located at the output shaft unlocking position, and the locking block is located at the trigger unlocking position; in the locking state, the shaft lock connecting rod rotates and abuts against the first connecting part and the second connecting part so that the shaft lock piece can be limited to the output shaft locking position, and the locking block can be limited to the trigger locking position. By means of the arrangement, the linkage mechanism is simple and compact in structure and convenient and smooth to operate, the two hands of a user can be liberated, and the safety during cutting piece replacement is greatly improved.

Description

[Technical field]

[0001] The present application relates to the technical field of power tools, and in particular to a cutting device with a simple and compact structure, convenient and smooth operation, and high safety. [Background Technology]

[0002] A cutting device is provided in the related art. When replacing the cutting piece of the cutting device, the user needs to press the locking shaft piece by hand, etc., which makes it inconvenient to disassemble the cutting piece, affecting the operational safety when replacing the cutting piece. [Summary of the invention]

[0003] The present application provides a cutting device to solve the problem of how to improve the operational safety when replacing a cutting member.

[0004] The embodiment of the present application provides a cutting device, comprising a body, a driving mechanism arranged in the body, and a cutting piece connected to the output shaft of the driving mechanism, wherein a switch electrically connected to the driving mechanism and a trigger for triggering or releasing the switch are arranged in the body. The cutting device also comprises a linkage mechanism arranged on the body, wherein the linkage mechanism comprises a shaft lock connecting rod rotating around a rotation axis, a shaft lock plate connected to the shaft lock connecting rod in a transmission manner, and a locking block connected to the shaft lock connecting rod in a transmission manner, wherein the locking block moves relative to the trigger. The shaft lock plate has an output shaft unlocking position that allows the output shaft to rotate, and an output shaft locking position that prevents the output shaft from rotating; the shaft lock plate is provided with a first connecting portion. The locking block has a trigger unlocking position that allows the trigger to trigger the switch, and a trigger locking position that prevents the trigger from triggering the switch; the locking block is provided with a second connecting portion. The linkage mechanism has an initial state and a locking state; in the initial state, the shaft lock plate is located at the output shaft unlocking position, and the locking block is located at the trigger unlocking position; in the locking state, the shaft lock connecting rod abuts against the first connecting portion and the second connecting portion respectively, so as to limit the shaft lock plate to the output shaft locking position, and limit the locking block to the trigger locking position. In the initial state, the shaft lock link is rotated relative to the fuselage at a preset angle so that the shaft lock link is respectively in contact with the first connection portion and the second connection portion, thereby switching the linkage mechanism from the initial state to the locked state.

[0005] When the cutting piece needs to be replaced, the above-mentioned cutting device can be switched from the initial state to the locked state by operating the shaft lock link to rotate, thereby realizing multiple functions respectively, so that the shaft lock piece locks the output shaft and prevents the trigger from triggering the switch. When the cutting piece is replaced in the locked state, the cutting device can be prevented from being accidentally started, and the user does not need to press the shaft lock piece, etc., thereby freeing the user's hands and facilitating the removal or installation of the cutting piece (for example, loosening or tightening the fasteners that lock the cutting piece), thereby improving the safety of the cutting piece replacement process.

[0006] In one embodiment, the first connection portion and the second connection portion are disposed adjacent to each other around the rotation axis.

[0007] In one embodiment, the first connection portion and the second connection portion are arranged on the same plane perpendicular to the rotation axis.

[0008] In one of the embodiments, the shaft lock link has a first stop portion and a second stop portion spaced apart around the rotation axis, and the radial spacing of the first stop portion from the rotation axis is not equal to the radial spacing of the second stop portion from the rotation axis; in an initial state, the first stop portion abuts against the first connecting portion to limit the shaft lock plate to an unlocking position of the output shaft; in a locked state, the second stop portion abuts against the first connecting portion to limit the shaft lock plate to a locking position of the output shaft, and the first stop portion abuts against the second connecting portion to limit the locking block to a trigger locking position.

[0009] In one of the embodiments, in an initial state, the first connecting portion abuts against the first stopping portion along the axial direction of the shaft locking link.

[0010] In one embodiment, the first stop portion includes an arcuate portion; in an initial state, the arcuate portion tangentially abuts against the first connecting portion; in a locked state, the arcuate portion tangentially abuts against the second connecting portion.

[0011] In one of the embodiments, a locking hole is provided on one side of the trigger close to the locking block; a protrusion is provided on one side of the locking block close to the trigger; in the trigger locked position, the protrusion extends into and is confined in the locking hole; in the trigger unlocked position, the protrusion is located outside the locking hole; the locking block translates along the extension direction of the locking hole to switch between the trigger locked position and the trigger unlocked position.

[0012] In one embodiment, the linkage mechanism further comprises a locking block reset spring, which elastically abuts between the fuselage and the locking block, and applies an elastic force to the locking block toward a side away from the trigger.

[0013] In one embodiment, the linkage mechanism further includes a shaft locking plate return spring, which elastically presses between the body and the shaft locking plate, and applies an elastic force on the shaft locking plate toward a side close to the output shaft.

[0014] In one of the embodiments, the axial lock link includes a first rotating arm and a second rotating arm respectively located on both sides of the rotation axis; in the locked state, the first rotating arm abuts against the first connecting portion and the second connecting portion respectively; in the initial state, the second rotating arm can rotate toward the outside of the fuselage at a preset angle so that the first rotating arm rotates toward the inside of the fuselage, thereby switching to the locked state. [Drawings]

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic structural diagram of a cutting device in one embodiment of the present application.

[0017] Figure 2 for Figure 1 Schematic diagram of the linkage mechanism, switch and trigger in the illustrated embodiment in the initial state.

[0018] Figure 3 for Figure 1 Schematic diagram of the linkage mechanism, switch and trigger in the locked state in the illustrated embodiment.

[0019] Figure 4 for Figure 1 A schematic diagram of a portion of the structure of the cutting device in the illustrated embodiment when the output shaft is in the unlocked position.

[0020] Figure 5 for Figure 1 A schematic diagram of a portion of the structure of the cutting device in the illustrated embodiment when the output shaft is locked.

[0021] Figure 6 for Figure 1 A schematic diagram of a portion of the structure of the cutting device in the illustrated embodiment when the trigger is in the unlocked position.

[0022] Figure 7 for Figure 1 A schematic diagram of a portion of the structure of the cutting device in the illustrated embodiment when the trigger is in the locked position.

[0023] Figure 8 for Figure 1 A schematic structural diagram of the shaft lock connecting rod in the illustrated embodiment.

[0024] Description of main component symbols:

[0025] Cutting device-100; body-10; output shaft-20; cutting member-30; switch-40; linkage mechanism-50; shaft lock link-51; first stop portion-511; arc portion-5111; second stop portion-512; first rotating arm-513; second rotating arm-514; shaft lock plate-52; first connecting portion-521; locking block-53; second connecting portion-531; protrusion-532; trigger-54; trigger return spring-540; locking hole-541; locking block return spring-55; shaft lock plate return spring-56; push rod-57; push rod return spring-570; depth link-58; rotation axis-m. [Specific implementation method]

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a centered element. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be a centered element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0029] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0030] Figure 1 is a schematic structural diagram of a cutting device 100 in an embodiment of the present application; Figure 2 for Figure 1 A schematic diagram of the linkage mechanism 50, the switch 40 and the trigger 54 in the illustrated embodiment in an initial state; Figure 3 for Figure 1 A schematic diagram of the linkage mechanism 50, the switch 40 and the trigger 54 in the locked state in the illustrated embodiment; Figure 4 for Figure 1A schematic diagram of a portion of the structure of the cutting device 100 in the illustrated embodiment when the output shaft is in an unlocked position; Figure 5 for Figure 1 A schematic diagram of a portion of the structure of the cutting device 100 in the illustrated embodiment when the output shaft is locked; Figure 6 for Figure 1 A schematic diagram of a portion of the structure of the cutting device 100 in the illustrated embodiment in a trigger unlocked position; Figure 7 for Figure 1 A schematic diagram of a portion of the structure of the cutting device 100 in the illustrated embodiment when the trigger is locked.

[0031] See also Figures 1 to 3 This embodiment provides a cutting device 100, including a body 10, a driving mechanism (not shown) disposed in the body 10, and a cutting member 30 connected to an output shaft 20 of the driving mechanism. A switch 40 electrically connected to the driving mechanism is disposed in the body 10. The cutting device 100 also includes a linkage mechanism 50, which includes a shaft locking link 51, a shaft locking sheet 52, a locking block 53, and a trigger 54 for triggering or releasing the switch 40. Figure 4 and Figure 5 As shown, the shaft locking piece 52 has an output shaft unlocking position that allows the output shaft 20 to rotate, and an output shaft locking position that prevents the output shaft 20 from rotating, and the shaft locking piece 52 is provided with a first connecting portion 521. Figure 6 and Figure 7 As shown, the locking block 53 has a trigger unlocking position that allows the trigger 54 to trigger the switch 40, and a trigger locking position that prevents the trigger 54 from triggering the switch 40. The locking block 53 is provided with a second connecting portion 531. The linkage mechanism 50 has an initial state and a locked state. In the initial state (see Figure 2 ), the shaft locking piece 52 is located at the output shaft unlocking position, and the locking block 53 is located at the trigger unlocking position. Figure 3 ), the shaft lock link 51 abuts against the first connection portion 521 and the second connection portion 531 respectively, so as to limit the shaft lock piece 52 to the output shaft locking position, and limit the locking block 53 to the trigger locking position. In the initial state, the shaft lock link 51 can rotate relative to the fuselage 10 at a preset angle, so that the shaft lock link 51 abuts against the first connection portion 521 and the second connection portion 531 respectively, thereby switching from the initial state to the locked state.

[0032] In the above-mentioned cutting device 100, in the initial state, the shaft locking piece 52 allows the output shaft 20 to rotate, that is, allows the driving mechanism to start, and the locking block 53 allows the trigger 54 to trigger the switch 40. When the cutting member 30 needs to be replaced, the shaft locking link 51 is operated to rotate to switch from the initial state to the locked state, thereby realizing multiple functions respectively, that is, the shaft locking piece 52 locks the output shaft 20 and prevents the trigger 54 from triggering the switch 40. When the cutting member 30 is replaced in the locked state, the cutting device 100 can be prevented from being started by mistake, and the user does not need to press the shaft locking piece 52, etc., thereby freeing the user's hands, facilitating the removal or installation of the cutting member 30 (for example, loosening or tightening the fasteners that lock the cutting member 30), thereby improving the safety of the replacement process of the cutting member 30.

[0033] In some embodiments, Figure 4 As shown, around the rotation axis m of the shaft lock link 51, the first connection portion 521 and the second connection portion 531 are adjacently arranged, so that the first connection portion 521 and the second connection portion 531 are respectively located on the rotation path of the shaft lock link 51, so that in the process of rotating the shaft lock link 51, the shaft lock link 51 can sequentially contact the first connection portion 521 and the second connection portion 531, and it is convenient to achieve the locked state (see Figure 3 ) The shaft lock link 51 is respectively in contact with the first connecting portion 521 and the second connecting portion 531, so that the linkage mechanism 50 operates smoothly and the overall structure is compact.

[0034] In some embodiments, Figure 4 As shown, the first connecting portion 521 and the second connecting portion 531 are on the same plane perpendicular to the rotation axis m of the shaft lock link 51. This is conducive to improving the transmission reliability of the shaft lock link 51 and the first connecting portion 521 and the second connecting portion 531, and making the shaft lock link 51 in the locked state (see Figure 3 ) The shaft lock link 51 can be reliably abutted against the first connecting portion 521 and the second connecting portion 531 respectively to ensure that the driving mechanism and the trigger 54 cannot be started in the locked state.

[0035] In some embodiments, Figure 2 and Figure 3 As shown, the shaft lock link 51 has a first stop portion 511 and a second stop portion 512 spaced apart around its rotation axis m, the first stop portion 511 being configured as an arcuate end surface provided at the axial end of the shaft lock link 51, and the second stop portion 512 being configured as a side end surface of the shaft lock link 51 close to the rotation axis m; the radial distance between the side of the first stop portion 511 away from the rotation center of the shaft lock link 51 and the rotation center is not equal to the radial distance between the side of the second stop portion 512 away from the rotation center and the rotation center. Figure 2As shown, in the initial state, the first stop portion 511 abuts against the first connecting portion 521 to limit the shaft locking piece 52 to the output shaft unlocking position. Figure 3 As shown, in the locked state, the second stop portion 512 abuts against the first connection portion 521 to limit the shaft locking piece 52 to the output shaft locking position, and the first stop portion 511 abuts against the second connection portion 531 to limit the locking block 53 to the trigger locking position. In this way, the shaft locking piece 52 is abutted at the position of unlocking the output shaft 20 by the first stop portion 511 in the initial state, and is abutted at the position of locking the output shaft 20 by the second stop portion 512 in the locked state. Since the first stop portion 511 and the second stop portion 512 are not spaced apart from the rotation center of the shaft locking link 51, the first connection portion 521 is allowed to shift relative to the initial state in the locked state to move from the output shaft unlocking position to the output shaft locking position. Therefore, the shaft locking link 51 also has the function of limiting the locking block 53 in the initial state, which is conducive to simplifying the structure of the linkage mechanism 50.

[0036] In some embodiments, Figure 2 and Figure 4 As shown, in the initial state, the first connecting portion 521 abuts against the first stop portion 511 along the axial direction of the shaft locking link 51, so that the force of the shaft locking plate 52 on the shaft locking link 51 passes through the rotation center of the shaft locking link 51, thereby making the linkage mechanism 50 simple in structure and the operation of the shaft locking link 51 more labor-saving.

[0037] Figure 8 for Figure 1 A schematic structural diagram of the shaft locking connecting rod 51 in the illustrated embodiment.

[0038] In some embodiments, Figure 8 As shown, the first stop portion 511 includes an arcuate portion 5111. Figure 4 As shown, in the initial state, the arc portion 5111 tangentially abuts against the first connecting portion 521, and the arc portion 5111 is connected to the first connecting portion 521. Figure 3 As shown, in the locked state, the arc surface 5111 tangentially abuts against the second connection portion 531. In this way, by providing the arc surface 5111, the arc surface 5111 can slidably contact the first connection portion 521 and the second connection portion 531 respectively, so that the shaft lock connecting rod 51 can more smoothly transmit the shaft lock plate 52 and the locking block 53, and it is beneficial to reduce structural wear.

[0039] In some embodiments, Figure 6 and Figure 7As shown, a locking hole 541 is provided on one side of the trigger 54 close to the locking block 53. A protrusion 532 is provided on one side of the locking block 53 close to the trigger 54. In the trigger locking position, the protrusion 532 extends into and is limited in the locking hole 541. In the trigger unlocking position, the protrusion 532 is located outside the locking hole 541. The locking block 53 can translate along the extending direction of the locking hole 541 to switch between the trigger locking position and the trigger unlocking position. In this way, the protrusion 532 is inserted into or removed from the locking hole 541 through the translation of the locking block 53, so that the locking block 53 can reliably lock the trigger 54, and the structure is simple.

[0040] In some embodiments, Figure 6 and Figure 7 As shown, the linkage mechanism 50 also includes a locking block return spring 55, which elastically abuts against the fuselage 10 (see Figure 5 ) and the locking block 53, the locking block reset spring 55 applies an elastic force to the locking block 53 away from the trigger 54. In this way, when the shaft lock link 51 switches from the locked state to the initial state, the shaft lock link 51 releases the limit on the locking block 53, and the locking block 53 moves away from the trigger 54 under the elastic force of the locking block reset spring 55, thereby automatically releasing the lock on the trigger 54. When the shaft lock link 51 switches from the initial state to the locked state, the shaft lock link 51 overcomes the elastic force of the locking block reset spring 55 to push the locking block reset spring 55 to move toward the side close to the trigger 54, thereby pushing the locking block 53 to lock the trigger 54.

[0041] Preferably, the trigger 54 is a rotating trigger, that is, the trigger 54 can rotate relative to the body 10, and the trigger 54 is reset by the trigger reset spring 540. In other embodiments, the trigger 54 is a sliding trigger, that is, the trigger 54 can move relative to the body 10 to switch between the trigger unlocking position and the trigger locking position.

[0042] In some embodiments, Figure 2 and Figure 3 As shown, the linkage mechanism 50 also includes a shaft lock piece return spring 56, and the shaft lock piece return spring 56 elastically presses against the fuselage 10 (see Figure 4) and the shaft locking piece 52, the shaft locking piece return spring 56 applies an elastic force to the shaft locking piece 52 toward the side close to the output shaft 20. In this way, when the shaft locking link 51 switches from the initial state to the locked state, the shaft locking piece 52 moves toward the side close to the output shaft 20 under the elastic force of the shaft locking piece return spring 56, so that the shaft locking piece 52 clamps the output shaft 20 to prevent the output shaft 20 from rotating, thereby ensuring that the shaft locking piece 52 is limited to the output shaft locking position by the elastic force of the shaft locking piece return spring 56. When the shaft locking link 51 switches from the locked state to the initial state, the shaft locking link 51 overcomes the elastic force of the shaft locking piece return spring 56 and pushes the shaft locking piece return spring 56 to move toward the side away from the output shaft 20 to release the lock on the output shaft 20.

[0043] In some embodiments, Figure 8 As shown, the shaft lock link 51 includes a first rotating arm 513 and a second rotating arm 514 located on both sides of the rotation axis m. Figure 4 and Figure 5 As shown, in the locked state, the first rotating arm 513 is respectively in contact with the first connecting portion 521 and the second connecting portion 531. In the initial state, the second rotating arm 514 can rotate outwardly of the body 10 by a preset angle so that the first rotating arm 513 rotates inwardly of the body 10, thereby switching to the locked state. In this way, in the initial state, by moving the second rotating arm 514 outwardly of the body 10 to switch to the locked state, the operation of the shaft lock link 51 is facilitated.

[0044] Optionally, the linkage mechanism 50 also includes a push rod 57 that can be transmission-connected to the shaft lock link 51. The push rod 57 can preferably rotate around an axis parallel to the rotation axis m. One end of the push rod 57 protrudes from the fuselage 10. The push rod 57 can be manually pushed and rotated by an operator, or pushed and rotated by the shaft lock link 51. A depth link 58 is provided at the other end of the push rod 57. One end of the depth link 58 is connected to the push rod 57, and the other end of the depth link 58 can abut against the side of the shield. In the initial state, the depth link 58 abuts against the shield, causing the fuselage 10 to be unable to be pressed down. The push rod 57 rotates and rotates with the depth link 58, so that the depth link 58 rotates until it is no longer abutted against the shield. At this time, the fuselage 10 can be pressed down, so that the cutting piece 30 is exposed and a subsequent replacement operation is performed. Figure 4 and Figure 5As shown, it is worth mentioning that the depth link 58 can be driven to rotate by the shaft lock link 51 alone, without the operator having to push the push rod 57. Specifically, in the locked state, that is, after the shaft lock link 51 rotates to a certain angle around the rotation axis m, the arc surface 5111 of the shaft lock link 51 abuts against the lower end of the push rod 57, and then the push rod 57 rotates and drives the depth link 58 to rotate, so that the depth link 58 rotates to not abut against the shield. At this time, the body 10 can be pressed down, so that the cutting piece 30 is exposed and the subsequent replacement operation is performed. Optionally, in order to enable the push rod 57 to be quickly reset, a push rod reset spring 570 is also provided on the side end surface of the push rod 57 away from the trigger 54. Optionally, in the initial state of the push rod 57 rotating, a part of the upper end of the push rod 57 can abut against the trigger 54, so that the trigger 54 cannot accidentally trigger the switch 40, which further increases the safety of the linkage mechanism 50.

[0045] The linkage mechanism 50 of the cutting device 100 has the following advantages:

[0046] 1. Ensure safety when replacing the cutting member 30: In the initial state, the cutting device 100 can operate normally. When the cutting member 30 needs to be replaced, it is only necessary to rotate the operating shaft lock link 51 to switch it to the locked state. In the locked state, the output shaft 20 can be locked at the same time and the trigger 54 can be prevented from triggering the switch to prevent accidental start-up, freeing the user's hands, facilitating the removal or installation of the cutting member 30, and improving the safety of the replacement process.

[0047] 2. Compact structure and smooth operation: The first connecting part 521 and the second connecting part 531 are arranged adjacent to each other and on the same plane perpendicular to the rotation axis m, so that the shaft lock link 51 contacts the two in turn to achieve locking, so that the linkage mechanism operates smoothly and has a compact structure, and can also improve the transmission reliability and ensure that the relevant components cannot be started in the locked state.

[0048] 3. Simple structure: The first stop portion 511 and the second stop portion 512 of the shaft lock link 51 are at different distances from the rotation axis m, which can simultaneously link the shaft lock plate 52 and the locking block 53, simplifying the structure of the linkage mechanism 50; and in the initial state, the force of the shaft lock plate 52 on the shaft lock link 51 passes through the rotation axis m, which saves effort in operation and has a simple structure.

[0049] 4. Reduce wear: The arc surface portion 5111 of the shaft lock connecting rod 51 can slidably contact related components, which can more smoothly transmit the shaft lock plate 52 and the locking block 53, which is beneficial to reduce structural wear.

[0050] 5. Reliable locking and automatic resetting: The locking block 53 is reliably locked by cooperating with the locking hole 541 of the trigger 54 through the protrusion 532 ; the shaft locking piece 52 ensures the limit and automatic resetting by means of the shaft locking piece resetting spring 56 .

[0051] 6. Convenient operation: The axis lock link 51 is convenient for operating the switching state through the second rotating arm 514; additional components such as a push rod 57 are provided, and the push rod 57 can be driven by the axis lock link 51 to achieve the downward pressing of the fuselage 10 and expose the cutting piece 30 for replacement, and the push rod 57 can prevent the trigger 54 from accidentally triggering the switch, thereby increasing safety.

[0052] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A cutting device, comprising a body, a driving mechanism disposed in the body, and a cutting member connected to an output shaft of the driving mechanism, wherein a switch electrically connected to the driving mechanism and a trigger for triggering or releasing the switch are disposed in the body; Features: The cutting device further comprises a linkage mechanism disposed on the body, the linkage mechanism comprising an axis locking link rotating about a rotation axis, an axis locking plate drivingly connected to the axis locking link, and a locking block drivingly connected to the axis locking link, the locking block moving relative to the trigger; The shaft locking piece has an output shaft unlocking position that allows the output shaft to rotate, and an output shaft locking position that prevents the output shaft from rotating; the shaft locking piece is provided with a first connecting portion; The locking block has a trigger unlocking position that allows the trigger to trigger the switch, and a trigger locking position that prevents the trigger from triggering the switch; the locking block is provided with a second connecting portion; The linkage mechanism has an initial state and a locked state; in the initial state, the shaft locking piece is located at the output shaft unlocking position, and the locking block is located at the trigger unlocking position; in the locked state, the shaft locking link abuts against the first connecting portion and the second connecting portion respectively to limit the shaft locking piece to the output shaft locking position, and limit the locking block to the trigger locking position; In the initial state, the shaft lock link is rotated relative to the body at a preset angle so that the shaft lock link abuts against the first connection portion and the second connection portion respectively, thereby switching the linkage mechanism from the initial state to the locking state.

2. The cutting device according to claim 1, characterized in that: The first connection portion and the second connection portion are adjacently disposed around the rotation axis.

3. The cutting device according to claim 1, characterized in that: The first connection portion and the second connection portion are arranged on the same plane perpendicular to the rotation axis.

4. The cutting device according to claim 1, characterized in that: The shaft lock connecting rod has a first stop portion and a second stop portion spaced apart around the rotation axis, wherein the radial distance between the first stop portion and the rotation axis is unequal to the radial distance between the second stop portion and the rotation axis; In the initial state, the first abutting portion abuts against the first connecting portion to limit the shaft locking piece to the output shaft unlocking position; In the locked state, the second stop portion abuts against the first connection portion to limit the shaft locking piece to the output shaft locking position, and the first stop portion abuts against the second connection portion to limit the locking block to the trigger locking position.

5. The cutting device according to claim 4, characterized in that: In the initial state, the first connecting portion abuts against the first stopping portion along the axial direction of the shaft locking link.

6. The cutting device according to claim 4, characterized in that: The first stop portion includes an arcuate portion; in the initial state, the arcuate portion tangentially abuts against the first connecting portion; in the locked state, the arcuate portion tangentially abuts against the second connecting portion.

7. The cutting device according to claim 1, characterized in that: A locking hole is provided on one side of the trigger close to the locking block; a protrusion is provided on one side of the locking block close to the trigger; when the trigger is in a locked position, the protrusion extends into and is confined in the locking hole; when the trigger is in an unlocked position, the protrusion is located outside the locking hole; The locking block translates along the extending direction of the locking hole to switch between the trigger locking position and the trigger unlocking position.

8. The cutting device according to claim 1, characterized in that: The linkage mechanism further comprises a locking block reset spring, which elastically abuts between the fuselage and the locking block, and applies an elastic force to the locking block toward a side away from the trigger.

9. The cutting device according to claim 1, characterized in that: The linkage mechanism further comprises a shaft locking piece return spring, wherein the shaft locking piece return spring elastically abuts between the fuselage and the shaft locking piece, and the shaft locking piece return spring applies an elastic force to the shaft locking piece toward a side close to the output shaft.

10. The cutting device according to claim 1, characterized in that: The axial lock link includes a first rotating arm and a second rotating arm respectively located on both sides of the rotation axis; in the locked state, the first rotating arm is respectively abutted against the first connecting portion and the second connecting portion; in the initial state, the second rotating arm can be rotated toward the outside of the fuselage by the preset angle so that the first rotating arm is rotated toward the inside of the fuselage, thereby switching to the locked state.

Images