Cutting device

Abstract

A cutting device comprises a body, a driving mechanism, an output shaft and a cutting piece, the body is provided with a switch, a trigger and a linkage mechanism; the linkage mechanism comprises a shaft lock connecting rod, a shaft lock plate and a locking block which rotate around a rotation axis, the locking block is movable relative to the trigger; the shaft lock plate is provided with a first connecting part and has an output shaft unlocking position and an output shaft locking position; the locking block is provided with a second connecting part and has 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 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 rotates and abuts against the first connecting part and the second connecting part 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 this way, the linkage mechanism has a simple and compact structure and is convenient and smooth to operate, can free the user's hands and greatly improve the safety during replacement of the cutting piece.

Description

[TECHNICAL FIELD]

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

[0002] In the related art, a cutting device is provided, which needs to be pressed by hand to hold the lock shaft piece and the like when replacing the cutting piece, so that it is inconvenient to operate the cutting piece disassembly, and the operation safety is affected when replacing the cutting piece. [SUMMARY]

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

[0004] An embodiment of the present application provides a cutting device, which comprises a machine body, a driving mechanism arranged in the machine body, and a cutting piece connected to an output shaft of the driving mechanism. The machine body is provided with a switch electrically connected to the driving mechanism and a trigger or release switch. The cutting device further comprises a linkage mechanism arranged on the machine body, which comprises a shaft lock connecting rod rotating around a rotation axis, a shaft lock piece in transmission connection with the shaft lock connecting rod, and a locking block in transmission connection with the shaft lock connecting rod. The locking block moves relative to the trigger. The shaft lock piece has an output shaft unlocking position allowing the output shaft to rotate, and an output shaft locking position preventing the output shaft from rotating. The shaft lock piece is provided with a first connecting portion. The locking block has a trigger unlocking position allowing the trigger to trigger the switch, and a trigger locking position preventing 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 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 abuts against the first connecting portion and the second connecting portion respectively, so as to limit the shaft lock piece to the output shaft locking position and limit the locking block to the trigger locking position. In the initial state, the shaft lock connecting rod rotates by a preset angle relative to the machine body, so that the shaft lock connecting rod abuts against the first connecting portion and the second connecting portion respectively, thereby switching the linkage mechanism from the initial state to the locking state.

[0005] When the cutting piece needs to be replaced, the shaft lock connecting rod is operated to rotate, so as to switch from the initial state to the locking state, thereby realizing multiple functions respectively, i.e. locking the shaft lock piece to the output shaft and preventing the trigger from triggering the switch. When the cutting piece is replaced in the locking state, the cutting device can be prevented from being started by mistake, and the user does not need to press the shaft lock piece and the like, thereby freeing the user's hands, facilitating the operation of disassembling or assembling the cutting piece (such as loosening or tightening the fastener locking the cutting piece), and further improving the safety of the cutting piece replacement process.

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

[0007] In one of the embodiments, the first connecting part and the second connecting part are arranged on the same plane perpendicular to the rotation axis.

[0008] In one of the embodiments, the shaft lock connecting rod has a first stop part and a second stop part spaced apart around the rotation axis, the radial distance of the first stop part from the rotation axis is different from the radial distance of the second stop part from the rotation axis; in the initial state, the first stop part abuts against the first connecting part to limit the shaft lock piece in the output shaft unlocking position; in the locked state, the second stop part abuts against the first connecting part to limit the shaft lock piece in the output shaft locking position, and the first stop part abuts against the second connecting part to limit the locking block in the trigger locking position.

[0009] In one of the embodiments, in the initial state, the first connecting part abuts against the first stop part along the axial direction of the shaft lock connecting rod.

[0010] In one of the embodiments, the first stop part comprises an arc surface part; in the initial state, the arc surface part tangentially abuts against the first connecting part; in the locked state, the arc surface part tangentially abuts against the second connecting part.

[0011] In one of the embodiments, the trigger is provided with a locking hole on the side close to the locking block; the locking block is provided with a protrusion on the side close to the trigger; in the trigger locking position, the protrusion extends into and is limited in the locking hole; in the trigger unlocking 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 locking position and the trigger unlocking position.

[0012] In one of the embodiments, the linkage mechanism further comprises a locking block return spring, the locking block return spring elastically abuts between the body and the locking block, and the locking block return spring exerts an elastic force on the locking block towards the side away from the trigger.

[0013] In one of the embodiments, the linkage mechanism further comprises a shaft lock piece return spring, the shaft lock piece return spring elastically abuts between the body and the shaft lock piece, and the shaft lock piece return spring exerts an elastic force on the shaft lock piece towards the side close to the output shaft.

[0014] In one of the embodiments, the shaft lock connecting rod comprises a first rotating arm and a second rotating arm respectively located on the two sides of the rotation axis; in the locked state, the first rotating arm abuts against the first connecting part and the second connecting part respectively; in the initial state, the second rotating arm can rotate by a preset angle outwards from the body to make the first rotating arm rotate inwards from the body, so as to switch to the locked state. [SUMMARY]

[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 relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the structure 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 their 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 embodiment shown in the unlocked position of the output shaft.

[0020] Figure 5 for Figure 1 A schematic diagram of a portion of the structure of the cutting device in the embodiment shown is shown in the output shaft locking position.

[0021] Figure 6 for Figure 1 Schematic diagram of a portion of the structure of the cutting device in the embodiment shown in the trigger unlocked position.

[0022] Figure 7 for Figure 1 Schematic diagram of a portion of the structure of the cutting device in the illustrated embodiment with the trigger locked.

[0023] Figure 8 for Figure 1 Schematic diagram of the structure of the shaft lock connecting rod in the embodiment shown.

[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; cambered surface portion-5111; second stop portion-512; first rotating arm-513; second rotating arm-514; shaft lock piece-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 piece return spring-56; push rod-57; push rod return spring-570; depth link-58; rotation axis-m. [DETAILED DESCRIPTION]

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application.

[0027] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. When an element is referred to as being "disposed" on another element, it can be directly disposed on the other element or there can be an intervening 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 commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0029] Some embodiments of the present application are described in detail. The following embodiments and features of the embodiments can be combined with each other in the case of no conflict.

[0030] Figure 1 Structure schematic diagram of cutting device 100 in an embodiment of the present application; Figure 2 Structure schematic diagram of cutting device 100 in an embodiment of the present application; Figure 1 Schematic diagram of linkage mechanism 50, switch 40 and trigger 54 in the initial state in the embodiment shown; Figure 3 Schematic diagram of linkage mechanism 50, switch 40 and trigger 54 in the initial state in the embodiment shown; Figure 1 Schematic diagram of linkage mechanism 50, switch 40 and trigger 54 in the locked state in the embodiment shown; Figure 4 Schematic diagram of linkage mechanism 50, switch 40 and trigger 54 in the locked state in the embodiment shown; Figure 1Partial structure diagram of cutting device 100 in output shaft unlocking position in the embodiment shown; Figure 5 For Figure 1 Partial structure diagram of cutting device 100 in output shaft locking position in the embodiment shown; Figure 6 For Figure 1 Partial structure diagram of cutting device 100 in trigger unlocking position in the embodiment shown; Figure 7 For Figure 1 Partial structure diagram of cutting device 100 in trigger locking position in the embodiment shown.

[0031] Referring to Figures 1 to 3 , the embodiment provides a cutting device 100, comprising a body 10, a driving mechanism (not shown in the figure) arranged in the body 10, and a cutting piece 30 connected to an output shaft 20 of the driving mechanism, and a switch 40 electrically connected to the driving mechanism arranged in the body 10. The cutting device 100 further comprises a linkage mechanism 50, the linkage mechanism 50 comprising a shaft lock connecting rod 51, a shaft lock piece 52, a locking block 53, and a trigger or release switch 40 trigger or release switch 40. As shown in Figure 4 And Figure 5 The shaft lock piece 52 has an output shaft unlocking position allowing the output shaft 20 to rotate, and an output shaft locking position preventing the output shaft 20 from rotating, and the shaft lock piece 52 is provided with a first connecting part 521. As shown in Figure 6 And Figure 7 The locking block 53 has a trigger unlocking position allowing the trigger 54 to trigger the switch 40, and a trigger locking position preventing the trigger 54 from triggering the switch 40, and the locking block 53 is provided with a second connecting part 531. The linkage mechanism 50 has an initial state and a locking state. In the initial state (see Figure 2 ), the shaft lock piece 52 is located in the output shaft unlocking position, and the locking block 53 is located in the trigger unlocking position. In the locking state (see Figure 3 ), the shaft lock connecting rod 51 abuts against the first connecting part 521 and the second connecting part 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 connecting rod 51 can rotate by a preset angle relative to the body 10, so that the shaft lock connecting rod 51 abuts against the first connecting part 521 and the second connecting part 531 respectively, thereby switching from the initial state to the locking state.

[0032] The cutting device 100 in the initial state allows the output shaft 20 to rotate, i.e. allows the driving mechanism to start, and the locking block 53 allows the trigger 54 to trigger the switch 40. When the cutting element 30 needs to be replaced, the shaft lock link 51 is rotated by operation to switch from the initial state to the locked state, thereby achieving multiple functions, i.e. locking the output shaft 20 by the shaft lock piece 52 and preventing the trigger 54 from triggering the switch 40. When the cutting element 30 is replaced in the locked state, the cutting device 100 can be prevented from starting by mistake, and the user does not need to perform operations such as pressing the shaft lock piece 52, thereby freeing the user's hands, facilitating the operation of disassembling or assembling the cutting element 30 (e.g. loosening or tightening the fastener for locking the cutting element 30), and thereby improving the safety of the cutting element 30 replacement process.

[0033] In some embodiments, as shown in Figure 4 , the first connecting portion 521 and the second connecting portion 531 are arranged adjacent to each other around the rotation axis m of the shaft lock link 51, so that the first connecting portion 521 and the second connecting portion 531 are located on the rotation path of the shaft lock link 51 respectively, thereby facilitating the shaft lock link 51 to sequentially contact the first connecting portion 521 and the second connecting portion 531 during the rotation of the shaft lock link 51, and facilitating the shaft lock link 51 to abut against the first connecting portion 521 and the second connecting portion 531 respectively in the locked state (see Figure 3 ), so that the linkage mechanism 50 operates smoothly and the overall structure is compact.

[0034] In some embodiments, as shown in Figure 4 , the first connecting portion 521 and the second connecting portion 531 are located on the same plane perpendicular to the rotation axis m of the shaft lock link 51. In this way, the transmission reliability of the shaft lock link 51 with the first connecting portion 521 and the second connecting portion 531 is improved, and the shaft lock link 51 can reliably abut against the first connecting portion 521 and the second connecting portion 531 respectively in the locked state (see Figure 3 ), so as to ensure that the driving mechanism and the trigger 54 cannot be started in the locked state.

[0035] In some embodiments, as shown in Figure 2 and Figure 3 , the shaft lock link 51 has a first abutting portion 511 and a second abutting portion 512 spaced apart around the rotation axis m thereof, the first abutting portion 511 is configured as an arc-shaped end face provided at the axial end of the shaft lock link 51, and the second abutting portion 512 is configured as a side end face of the shaft lock link 51 close to the rotation axis m; the radial distance between the side of the first abutting 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 abutting portion 512 away from the rotation center and the rotation center. As Figure 2As shown, in the initial state, the first stop portion 511 abuts against the first connecting portion 521 to limit the shaft lock piece 52 to the output shaft unlocking position. As shown in Figure 3 As shown, in the locking state, the second stop portion 512 abuts against the first connecting portion 521 to limit the shaft lock piece 52 to the output shaft locking position, while the first stop portion 511 abuts against the second connecting portion 531 to limit the locking block 53 to the trigger locking position. Thus, the shaft lock link 51 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, as shown in 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 lock link 51, so that the force of the shaft lock piece 52 on the shaft lock link 51 passes through the rotation center of the shaft lock link 51, thereby making the linkage mechanism 50 simple in structure and the operation of the shaft lock link 51 more labor-saving.

[0037] Figure 8 For Figure 1 The structural schematic diagram of the shaft lock link 51 in the embodiment shown.

[0038] In some embodiments, as shown in Figure 8 The first stop portion 511 includes an arc surface portion 5111. In combination with Figure 4 As shown, in the initial state, the arc surface portion 5111 is tangent to the first connecting portion 521, in combination with Figure 3 As shown, in the locking state, the arc surface portion 5111 is tangent to the second connecting portion 531. Thus, by providing the arc surface portion 5111, the arc surface portion 5111 is respectively slidably contacted with the first connecting portion 521 and the second connecting portion 531, so that the shaft lock link 51 more smoothly drives the shaft lock piece 52 and the locking block 53, and is conducive to reducing structural wear.

[0039] In some embodiments, as shown in Figure 6 and Figure 7As shown, the trigger 54 is provided with a locking hole 541 on the side close to the locking block 53. The locking block 53 is provided with a protrusion 532 on the side 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 is able to translate along the extension 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 moved out of the locking hole 541 through the translation of the locking block 53, so that the locking block 53 is able to reliably lock the trigger 54 and the structure is simple.

[0040] In some embodiments, as shown in Figure 6 and Figure 7 As shown, the linkage mechanism 50 further comprises a locking block return spring 55 which is elastically abutted between the body 10 (see Figure 5 ) and the locking block 53. The locking block return spring 55 applies an elastic force to the locking block 53 towards the side away from the trigger 54. In this way, when the shaft lock link 51 is switched from the locking state to the initial state, the shaft lock link 51 releases the limitation on the locking block 53, and the locking block 53 leaves the trigger 54 under the elastic force of the locking block return spring 55, thereby automatically releasing the locking of the trigger 54. When the shaft lock link 51 is switched from the initial state to the locking state, the shaft lock link 51 overcomes the elastic force of the locking block return spring 55 to move the locking block return spring 55 towards 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, i.e. the trigger 54 is able to rotate relative to the body 10, and the trigger 54 is reset through a trigger return spring 540. In other embodiments, the trigger 54 is a sliding trigger, i.e. the trigger 54 is able to move relative to the body 10 to switch between the trigger unlocking position and the trigger locking position.

[0042] In some embodiments, as shown in Figure 2 and Figure 3 As shown, the linkage mechanism 50 further comprises a shaft lock piece return spring 56 which is elastically abutted between the body 10 (see Figure 4The shaft lock piece reset spring 56 exerts an elastic force on the shaft lock piece 52 towards the side close to the output shaft 20. Thus, when the shaft lock link 51 is switched from the initial state to the locked state, the shaft lock piece 52 moves towards the side close to the output shaft 20 under the elastic force of the shaft lock piece reset spring 56, so that the shaft lock piece 52 clamps the output shaft 20 to prevent the output shaft 20 from rotating, thereby ensuring that the shaft lock piece 52 is limited in the output shaft locking position by the elastic force of the shaft lock piece reset spring 56. When the shaft lock link 51 is switched from the locked state to the initial state, the shaft lock link 51 overcomes the elastic force of the shaft lock piece reset spring 56 and pushes the shaft lock piece reset spring 56 to move away from the output shaft 20, so as to release the locking of the output shaft 20.

[0043] In some embodiments, as shown in Figure 8 The shaft lock link 51 comprises a first rotating arm 513 and a second rotating arm 514 located on both sides of the rotating axis m of the shaft lock link 51, respectively. Figure 4 and Figure 5 In the locked state, the first rotating arm 513 abuts against the first connecting part 521 and the second connecting part 531, respectively. In the initial state, the second rotating arm 514 can be rotated by a preset angle outwards of the machine body 10, so that the first rotating arm 513 is rotated inwards of the machine body 10, thereby being switched to the locked state. Thus, in the initial state, the shaft lock link 51 is switched to the locked state by pulling the second rotating arm 514 outwards of the machine body 10, thereby facilitating the operation of the shaft lock link 51.

[0044] Optionally, the linkage mechanism 50 further comprises a push rod 57 which is in transmission connection with the shaft lock link 51. The push rod 57 is preferably rotatable about an axis parallel to the rotating axis m. One end of the push rod 57 protrudes out of the machine body 10 and the push rod 57 can be manually rotated by an operator or rotated by the shaft lock link 51. The other end of the push rod 57 is provided with a depth link 58 which is connected to the push rod 57 at one end and abuts against the side surface of the shroud at the other end. In the initial state, the depth link 58 abuts against the shroud to prevent the machine body 10 from being pressed down. The push rod 57 is rotated and the depth link 58 is rotated together with the push rod 57, so that the depth link 58 is rotated to be not in abutment with the shroud, and at this time the machine body 10 can be pressed down, so that the cutting member 30 is exposed and the subsequent replacement operation is performed. Figure 4 and Figure 5As shown, it is worth noting that the depth link 58 can be driven to rotate independently by the axis lock link 51, without the operator having to push the push rod 57. Specifically, in the locked state, i.e., after the axis lock link 51 rotates to a certain angle about the rotation axis m, the arcuate surface 5111 of the axis lock link 51 abuts the lower end of the push rod 57. The push rod 57 then rotates, driving the depth link 58 to rotate, causing the depth link 58 to rotate until it no longer abuts the shield. At this point, the machine body 10 can be pressed downward, exposing the cutting element 30 and allowing subsequent replacement operations. Optionally, to quickly reset the push rod 57, a push rod return spring 570 is provided on the side end surface of the push rod 57 away from the trigger 54. Optionally, in the initial state of rotation, a portion of the upper end of the push rod 57 can abut the trigger 54, preventing the trigger 54 from accidentally triggering the switch 40, further enhancing 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, preventing 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 portion 521 and the second connecting portion 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 can contact the two in sequence to achieve locking, making the linkage mechanism smooth to operate and compact in structure, and also improving transmission reliability, ensuring that related 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 exerted by 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 arcuate 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, thereby reducing structural wear.

[0050] 5. Reliable locking and automatic reset: 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 is ensured to be limited and automatically reset by means of the shaft locking piece reset spring 56.

[0051] 6. Convenient operation: the shaft lock connecting rod 51 is convenient to operate the switching state through the second rotating arm 514; the push rod 57 and other components are added, the push rod 57 can be driven by the shaft lock connecting rod 51 to realize the lower pressing of the fuselage 10, and the cutting member 30 is exposed to be replaced, and the push rod 57 can prevent the trigger 54 from triggering the switch accidentally, and the safety is increased.

[0052] The above embodiments are only used to illustrate the technical solutions of the application and are not limited. Although the application has been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the application can be modified or replaced without departing from the spirit and scope of the application.

Claims

1. A cutting device comprising a body, a drive mechanism disposed within the body, and a cutting element connected to an output shaft of the drive mechanism, wherein the body is provided with a switch electrically connected to the drive mechanism and a trigger for activating or releasing the switch; Its characteristics are: The cutting device further includes a linkage mechanism provided on the body, the linkage mechanism including 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 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 locking plate is provided with a first connecting portion; The locking block has a trigger unlocking position allowing the trigger to trigger the switch, and a trigger locking position preventing 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 plate 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 plate to the output shaft locking position, and limit the locking block to the trigger locking position; In the initial state, the axis lock link rotates relative to the body at a preset angle so that the axis 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 locked state.

2. The cutting device according to claim 1, characterized in that: The first connection portion and the second connection portion are adjacently arranged 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 a radial distance between the first stop portion and the rotation axis is unequal to a 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 plate to the output shaft unlocking position; In the locked state, the second stop portion abuts against the first connecting portion to limit the shaft locking piece to the output shaft locking position, and the first stop portion abuts against the second connecting 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 within the locking hole; when the trigger is in an unlocked position, the protrusion is located outside the locking hole; The locking block translates along an 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 includes a locking block reset spring, which elastically abuts between the body 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 includes a shaft locking piece return spring, which elastically presses between the body and the shaft locking piece, and 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 axis 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 part and the second connecting part respectively; in the initial state, the second rotating arm can rotate toward the outside of the fuselage by the preset angle so that the first rotating arm rotates toward the inside of the fuselage, thereby switching to the locked state.

Images