Lightweight low-noise wool shears
By using a gear set structure with no eccentric body and swing arm, and a plastic shell design, the problems of heavy weight, high noise, and hot hands of electric wool shears have been solved, achieving a low-vibration, low-noise, and labor-saving shearing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU BOSTEC PRECISION MOTOR CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-06-26
AI Technical Summary
Existing electric wool shears suffer from problems such as being heavy, causing fatigue during use, being noisy, and getting hot to the touch.
It adopts a gear set structure without eccentric body and rocker arm. Through the incomplete meshing design of the first and second gears, the moving blade can swing in both directions, reducing vibration and noise. The plastic shell reduces heat transfer, and the weight of the motor is borne by the sheep body. The user only needs to push the machine forward.
It reduces vibration and noise of the wool shears, reduces user hand fatigue, improves shearing efficiency, reduces heat transfer, and makes it easier to use.
Smart Images
Figure CN224407674U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wool shearing technology, and in particular to a lightweight and low-noise wool shear. Background Technology
[0002] Wool shears include hand shears and electric shears. Hand shears are structurally similar to regular household scissors, but larger. Electric shears are similar to human hairdressing scissors, with a motor driving the blades to swing left and right to cut the wool. See appendix. Figure 13-14 The structural principle of a conventional electric wool shear is as follows: an eccentric body a is mounted on the motor shaft, and a swing arm b is mounted on the eccentric body a. The rotational motion of the motor is converted into left and right swinging motion. The swing arm b pushes the moving blade d to swing left and right through the pressure claw c. Below the moving blade d is a fixed blade e, which is fixed to the main body housing f and does not move.
[0003] During the shearing process, the operator holds the middle part of the machine, with the entire weight of the machine resting on their hand. The fixed blade is placed against the sheep's body, and the machine is pushed forward while the moving blade swings left and right against the fixed blade to cut the wool.
[0004] The existing wool shears have the following problems:
[0005] 1) It is heavy and can easily cause fatigue during prolonged use;
[0006] 2) When users hold the metal casing, heat transfer is rapid, and the heat from the motor is transferred to the hand, causing discomfort or even burns;
[0007] 3) The motor drives the rocker arm through the eccentric body, which in turn drives the pressure claw and the moving blade in sequence. This results in low efficiency and high noise. Utility Model Content
[0008] The purpose of this invention is to provide a lightweight and low-noise wool shears to solve the problems of fatigue, excessive vibration, hot hands, and loud noise caused by existing electric wool shears.
[0009] To achieve the above objectives, this utility model adopts the following technical solution: a lightweight, low-noise wool shears, comprising:
[0010] The handle body has an upper support and a lower support at its end;
[0011] The motor is fixedly mounted on the upper bracket, and the motor shaft passes through the upper bracket. A drive gear is mounted on the motor shaft.
[0012] The gear set includes a first gear shaft and a second gear shaft. The first gear shaft is provided with a first gear and a first incomplete gear. The first gear meshes with a drive gear. The second gear shaft is provided with a second gear and a second incomplete gear. Both the first gear shaft and the second gear shaft are rotatably mounted on an upper bracket. The tooth positions of the first incomplete gear and the second incomplete gear are not more than 180 degrees apart. The phase difference between the first incomplete gear and the second incomplete gear is not less than 180 degrees to avoid simultaneous contact and meshing with the gear rack on the pressure claw or the moving blade.
[0013] The pressure claw has a rack portion on its back for meshing with the first incomplete gear and the second incomplete gear. Both the first gear and the second gear extend above the pressure claw and make contact with it.
[0014] The moving blade is located below the pressure jaw and is coupled to the pressure jaw.
[0015] The fixed blade is located below the moving blade and is fixedly mounted on the lower support.
[0016] As a further description of the above technical solution:
[0017] The back of the pressure claw is provided with a rotating handle, and the end of the rotating handle is rotatably mounted on the lower bracket after passing through the gap between the first gear shaft and the second gear shaft.
[0018] As a further description of the above technical solution:
[0019] The bottom of the pressure claw is provided with a protrusion, and the moving blade is provided with a corresponding insertion hole.
[0020] As a further description of the above technical solution:
[0021] A second spring and a second upper bearing are sequentially mounted on the second gear of the second gear shaft from bottom to top. The second upper bearing is located in the second positioning hole on the upper bracket. One end of the second spring contacts the second gear and the other end contacts the second upper bearing. A second screw is also provided in the second positioning hole, and the bottom of the second screw contacts the second upper bearing.
[0022] As a further description of the above technical solution:
[0023] A boss is provided below the moving blade, and a positioning groove corresponding to the boss is provided on the fixed blade. The boss is slidably connected in the positioning groove.
[0024] As a further description of the above technical solution:
[0025] The upper support is equipped with a housing.
[0026] As a further description of the above technical solution:
[0027] The pressure claw and moving blade are integrally molded.
[0028] As a further description of the above technical solution:
[0029] The upper support is equipped with a pressing bolt, which is threadedly connected to the upper support. A rolling element is provided at the bottom of the pressing bolt, which is slidably connected to the pressing groove on the pressing groove component. Several pressing rods are provided on the back of the pressing groove component, and a third spring is fitted at the end of the pressing rod. One end of the third spring contacts the moving blade, and the other end contacts the pressing rod.
[0030] As a further description of the above technical solution:
[0031] The rolling element is a ball or a bearing.
[0032] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0033] 1. In this utility model, the wool shearing drive mechanism does not require an eccentric body or a swing arm, which reduces vibration and noise. At the same time, compared with the unidirectional rotating disc-shaped moving blade, the bidirectional swinging moving blade has a better shearing effect and improves the shearing effect on both sides of the fixed blade.
[0034] 2. In this utility model, when using the wool shears, the weight of the motor does not need to be borne by the user; instead, it rests on the sheep. The user only needs to push the machine forward, relieving the pressure on the hand and making it easier to use. Since the handle is separated from the motor unit, the motor's heat is not easily transferred to the handle. Furthermore, because the handle does not bear much force, a plastic casing can be used to further reduce heat transfer and weight.
[0035] 3. In this utility model, the moving blade and the fixed blade are brought into good contact by the first gear and the second gear pressing and positioning claw. In order to further improve the contact effect, a separate pressure application structure is also designed. Attached Figure Description
[0036] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0037] Figure 1 This is a schematic diagram of a lightweight, low-noise wool shearing scheme.
[0038] Figure 2 A structural breakdown diagram of a lightweight, low-noise wool shearing scheme. Figure 1 .
[0039] Figure 3 A structural breakdown diagram of a lightweight, low-noise wool shearing scheme. Figure 2 .
[0040] Figure 4 A schematic diagram of the gear assembly in a lightweight, low-noise wool shearing solution. Figure 1 .
[0041] Figure 5 A schematic diagram of the gear assembly in a lightweight, low-noise wool shearing solution. Figure 2 .
[0042] Figure 6 This is a schematic diagram of a second design for a lightweight, low-noise wool shearing system.
[0043] Figure 7 This is a structural diagram of a third solution for a lightweight, low-noise wool shearing device.
[0044] Figure 8 This is a schematic diagram of a lightweight, low-noise wool shearing scheme four.
[0045] Figure 9 This is a structural diagram of a lightweight, low-noise wool shearing scheme five.
[0046] Figure 10 This is a schematic diagram of a lightweight, low-noise wool shearing scheme six.
[0047] Figure 11 This is a structural diagram of a lightweight, low-noise wool shearing scheme seven.
[0048] Figure 12 This is a structural diagram of a lightweight, low-noise wool shearing solution eight.
[0049] Figure 13 This is a schematic diagram of the structure of an existing wool shears.
[0050] Figure 14 This is a partial cross-sectional view of an existing wool shears.
[0051] Legend:
[0052] 1. Handle body; 11. Upper bracket; 12. Lower bracket; 19. Housing; 2. Motor; 21. Drive gear; 3. Gear set; 31. First gear shaft; 311. First gear; 312. First incomplete gear; 32. Second gear shaft; 321. Second gear; 322. Second incomplete gear; 323. Second spring; 324. Second upper bearing; 325. Second screw; 4. Claw; 41. Rack; 42. Rotating handle; 43. Protrusion; 5. Moving blade; 51. Insertion hole; 6. Fixed blade; 61. Positioning groove; 7. Lower pressing bolt; 71. Rolling element; 72. Pressing groove component; 721. Pressing groove; 73. Pressing rod; 731. Third spring; 74. Pressing plate;
[0053] 59. Strip hole; 69. Positioning component. Detailed Implementation
[0054] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0055] Example 1
[0056] Option 1: Please refer to Figure 1-5 This utility model provides a technical solution: a lightweight and low-noise wool shears, comprising:
[0057] The handle body 1 has an upper bracket 11 and a lower bracket 12 at its end;
[0058] Motor 2 is fixedly mounted on the upper bracket 11. The motor shaft of motor 2 passes through the upper bracket 11, and a drive gear 21 is mounted on the motor shaft.
[0059] Gear set 3 includes a first gear shaft 31 and a second gear shaft 32. The first gear shaft 31 is provided with a first gear 311 and a first incomplete gear 312. The first gear 311 meshes with the drive gear 21. The second gear shaft 32 is provided with a second gear 321 and a second incomplete gear 322. The second gear shaft 32 is rotatably mounted on the upper bracket 11. The second gear 321 meshes with the first gear 311. The tooth positions of the first incomplete gear 312 and the second incomplete gear 322 are not more than 180 degrees apart. The phase difference between the first incomplete gear 312 and the second incomplete gear 322 is not less than 180 degrees to avoid simultaneous contact and meshing with the gear rack on the pressure claw or the moving blade.
[0060] The pressure claw 4 has a rack portion 41 on its back for meshing with the first incomplete gear 312 and the second incomplete gear 322. The first gear 311 and the second gear both extend above the pressure claw 4 and are in contact.
[0061] The moving blade 5 is located below the pressure claw 4 and is coupled to the pressure claw 4.
[0062] The fixed blade 6 is located below the moving blade 5 and is fixedly mounted on the lower bracket 12.
[0063] The wool shearing drive mechanism eliminates the need for an eccentric body and a swing arm, reducing vibration and noise. Compared to a unidirectional rotating disc-shaped moving blade, the bidirectional oscillating moving blade provides better shearing results and improves the shearing effect on both sides of the fixed blade 6.
[0064] When using the wool shears, the weight of motor 2 is not borne by the user; instead, it rests on the sheep. The user only needs to push the machine forward, relieving pressure on the hands and making it easier to use. With the handle separated from the motor unit, the motor's heat is less likely to be transferred to the handle. Furthermore, since the handle does not bear much force, a plastic casing can be used to further reduce heat transfer and weight.
[0065] The motor 2 cable can pass through the inner cavity of the handle body 1, exit from the tail end of the handle body 1, and connect to the controller. A fan can be added to the top of the motor 2 to dissipate heat. The motor 2 is fixed to the upper bracket 11 using screws or the like. A stop can be made on the motor end cover, and corresponding holes can be made on the upper bracket 11 for positioning.
[0066] A rotating handle 42 is provided on the back of the pressure claw 4. The end of the rotating handle 42 passes through the gap between the first gear shaft 31 and the second gear shaft 32 and is rotatably mounted on the lower bracket 12. The rotating handle 42 is located below the first incomplete gear 312 and the second incomplete gear 322 to prevent the pressure claw 4 from separating from the handle body 1.
[0067] The bottom of the pressure claw 4 is provided with a protrusion 43, and the moving blade 5 is provided with an insertion hole 51 corresponding to the position of the protrusion 43, so as to realize the coupling between the moving blade 5 and the pressure claw 4. The pressure claw 4 drives the moving blade 5 to move through the protrusion 43.
[0068] The first gear shaft 31 and the second gear shaft 32 have the same structure and installation method. Taking the second gear shaft 32 as an example: a second spring 323 and a second upper bearing 324 are sequentially mounted on the second gear of the second gear shaft 32 from bottom to top. The second upper bearing 324 is set in the second positioning hole on the upper bracket 11. One end of the second spring 323 contacts the second gear 321 and the other end contacts the second upper bearing 324. A second screw 325 is also set in the second positioning hole. The bottom of the second screw 325 contacts the second upper bearing 324.
[0069] A first spring and a first upper bearing are sequentially mounted on the first gear of the first gear shaft 31 from bottom to top. The first upper bearing is located in the first positioning hole on the upper bracket. One end of the first spring contacts the first gear and the other end contacts the first upper bearing. A first screw is also provided in the first positioning hole, and the bottom of the first screw contacts the first upper bearing.
[0070] The inner diameter of the second positioning hole is partially threaded to achieve a threaded connection with the second screw 325. The second gear shaft 32 passes through the second upper bearing 324. Rotating the second screw 325 adjusts the position, thereby adjusting the pressure on the outer ring of the second upper bearing 324. This pressure, in turn, adjusts the pressure on the second gear 321 via a spring, and is ultimately transmitted to the pressure claw 4 and the moving blade 5. The tightness between the moving blade 5 and the fixed blade 6 can be adjusted by rotating the second screw 325. The user can adjust the tightness between the moving blade 5 and the fixed blade 6 according to the actual usage effect.
[0071] In addition, the second gear shaft 32 can be rotatably mounted to the upper bracket 11 via only the second upper bearing 324, or it can be rotatably mounted to the lower bracket 12 with the addition of a second lower bearing, the second lower bearing being disposed in the hole of the lower bracket 12.
[0072] A housing 19 is provided on the upper support 11. The housing 19 is fixed by bolts to hide and protect the gear set 3.
[0073] Option 2: See appendix Figure 6 The rack section 41 can adopt an arc-shaped design.
[0074] To meet the shearing requirements of the moving blade 5 under different conditions, the movement trajectory of the moving blade 5 can be controlled by changing the shape of the rack portion 41. The arc-shaped rack portion 41 causes the moving blade 5 to swing left and right along an arc, while the straight rack portion 41 causes the moving blade 5 to swing left and right along a straight line.
[0075] Working principle: When the wool shears are in use, the motor 2 drives the first gear 311 in the gear set 3 to rotate through the drive gear 21, inputting power. Since the first incomplete gear 312 and the second incomplete gear 322 have teeth within a semicircle and are symmetrical and complementary, the first incomplete gear 312 and the second incomplete gear 322 will not mesh with the rack part 41 at the same time. The first incomplete gear 312 and the second incomplete gear 322 drive the rack part 41 and the pressure claw 4 to move respectively, so that the moving blade 5 swings back and forth, converting the rotation output by the motor 2 into the left and right swing of the blade, thereby realizing the shearing of wool.
[0076] In the specific operation of gear set 3: If the drive gear 21 on the output shaft of motor 2 rotates clockwise, it drives the first gear 311 and the first gear shaft 31 to rotate counterclockwise, and the second gear 321 and the second gear shaft 32 rotate clockwise accordingly. Therefore, when the first incomplete gear 312 rotates counterclockwise and the second incomplete gear 322 rotates clockwise, and when the first incomplete gear 312 meshes with the rack part 41, the second incomplete gear 322 does not mesh with the rack part 41, and the first incomplete gear 312 drives the rack part 41 and the pressure claw 4 to move in one direction; conversely, when the first incomplete gear 312 disengages from the rack part 41 and the second incomplete gear 322 meshes with the rack part 41, the second incomplete gear 322 drives the rack part 41 and the pressure claw 4 to move in the opposite direction and reset.
[0077] Example 2
[0078] Option 3: See appendix Figure 7 This embodiment further improves upon the above embodiment by providing the following technical solution: a boss is provided below the moving blade 5, and a positioning groove 61 corresponding to the boss is provided on the fixed blade 6. The boss is slidably connected within the positioning groove 61 to control the relative sliding of the moving blade 5 and the fixed blade 6. The shape of the positioning groove 61 corresponds to the shape of the rack portion 41. For example, an arc-shaped rack portion 41 corresponds to an arc-shaped positioning groove 61, and a straight rack portion 41 corresponds to an arc-shaped straight positioning groove 61.
[0079] Alternatively, a boss can be provided on the top of the fixed blade 6, and a corresponding positioning groove can be provided on the bottom of the moving blade 5.
[0080] Option 8: Or see the appendix Figure 12 The fixed blade 6 is provided with a positioning element 69, and the moving blade 5 is provided with a strip hole 59 corresponding to the positioning element 69. The positioning element 69 passes through the strip hole 59.
[0081] The positioning element 69 can be a screw. The positioning element 69 is threadedly connected to the fixed blade 6. A spring and a washer are provided below the nut of the screw and above the moving blade 5 to achieve elastic clamping of the moving blade 5.
[0082] Example 3
[0083] Options four, five, six, and seven: see appendix. Figure 8-11 Based on the above embodiments, this embodiment further improves upon the following technical solution: the pressure claw 4 and the moving blade 5 are integrally molded.
[0084] The installation structure of the pressure claw 4 is simplified by using the first gear 311 and the second gear 321 in the gear set 3 to press down and position the pressure claw 4.
[0085] Example 4
[0086] Options 5, 6, and 7: See appendix Figure 9-11 This embodiment further improves upon the above embodiment by providing the following technical solution: A pressing bolt 7 is provided on the upper support 11, threadedly connected to the upper support 11. A rolling element 71 is provided at the bottom of the pressing bolt 7, slidably connected to the pressing groove 721 on the pressing groove component 72. Several pressing rods 73 are provided on the back of the pressing groove component 72, with a third spring 731 fitted at the end of each pressing rod. One end of the third spring 731 contacts the moving blade, and the opposite end contacts the pressing rod. The rolling element 71 is a ball bearing or a bearing.
[0087] Currently, the first gear 311 and the second gear 321 press the positioning claw 4 to ensure good contact between the moving blade 5 and the fixed blade 6. To further improve the contact effect, a separate pressure application structure can be designed.
[0088] Specifically, the pressure-applying structure includes the following three designs.
[0089] Option 5: See appendix Figure 9 The lowering bolt 7 is rotated to the inner thread of the handle, applying pressure to the pressure plate 74. The pressure plate 74 has feet, with round or spherical holes machined at the lower ends of the feet, into which the rolling element 71 (steel ball) is placed. The steel ball contacts the bottom surface of the pressure groove 721, applying pressure to the pressure groove component 72. The pressure groove component 72 has four pressure rods 73, which respectively contact the four teeth of the moving blade 5. The tightness of the contact between the moving blade and the fixed blade can be adjusted by the lowering bolt 7. The pressure plate 74 does not move, while the pressure groove component 72 moves with the moving blade, causing the steel ball to roll. The pressure plate 74 is rotatably mounted on the bottom end of the lowering bolt 7.
[0090] Option Six: See Appendix Figure 10 Compared to Option 1, the pressure plate 74 is removed, and a round hole or ball hole is machined directly at the lower end of the pressing bolt 7. The rolling part 71 in the shape of a steel ball is placed in the hole at the lower end of the pressing bolt 7.
[0091] Option 7: See appendix Figure 11 Compared to Option 1, the pressure plate 74 has semi-circular or full-circular holes on both sides of its lower end. A shaft is installed in each hole, and a bearing is mounted on the shaft. The outer ring of the bearing contacts the bottom surface of the pressure groove 721, applying pressure to the pressure groove component. Alternatively, only one bearing can be used, placed at the lower end of the screw.
[0092] Figure 9 and Figure 10 The third spring 731 is omitted.
[0093] Example 5
[0094] Based on the above embodiments, this embodiment further improves upon the following technical solution: a second drive motor is provided on the handle body, and the second drive motor is used to drive the second gear shaft to rotate.
[0095] The second drive motor rotates in the same way that motor 2 drives the first gear shaft 31 to rotate through drive gear 21, thereby achieving the rotation of the second gear shaft. The rotation direction of the second drive motor is opposite to that of motor 2, which improves the shearing efficiency.
[0096] When the wool shears adopt a dual-motor design, the output end of motor 2 can be directly connected to the first gear shaft, eliminating the need for the drive gear 21 in the transmission. Similarly, the second drive motor can directly drive the second gear shaft to rotate, simplifying the power transmission structure.
[0097] Alternatively, only the first incomplete gear can be retained on the first gear shaft 31, while the first gear 311 is mounted on the motor shaft of motor 2, directly driving the first incomplete gear on the first gear shaft 31 via the first gear 311 on the motor shaft of motor 2. Similarly, a second gear is mounted on the motor shaft of the second drive motor, directly driving the second incomplete gear on the second gear shaft. Furthermore, the wool shears can directly use two motors rotating in opposite directions to drive the incomplete gears, simplifying the transmission structure and reducing the number of gears in the gear set 3.
[0098] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A lightweight, low-noise wool shears, characterized in that, include: The handle body has an upper support and a lower support at its end; An electric motor is fixedly mounted on the upper bracket, the motor shaft passes through the upper bracket, and a drive gear is mounted on the motor shaft; A gear set includes a first gear shaft and a second gear shaft. The first gear shaft is provided with a first gear and a first incomplete gear. The first gear meshes with the drive gear. The second gear shaft is provided with a second gear and a second incomplete gear. Both the first gear shaft and the second gear shaft are rotatably mounted on the upper bracket. The second gear meshes with the first gear. The tooth positions of the first incomplete gear and the second incomplete gear are not more than 180 degrees apart, and the phase difference between the first incomplete gear and the second incomplete gear is not less than 180 degrees. The pressure claw has a rack portion on its back for meshing with the first incomplete gear and the second incomplete gear. Both the first gear and the second gear extend above the pressure claw and make contact with it. A movable blade is disposed below the pressure claw, and the movable blade is coupled to the pressure claw; A fixed blade is disposed below the movable blade, and the fixed blade is fixedly mounted on the lower support.
2. The lightweight, low-noise wool shears according to claim 1, characterized in that, The back of the pressure claw is provided with a rotating handle, and the end of the rotating handle is rotatably mounted on the lower bracket after passing through the gap between the first gear shaft and the second gear shaft.
3. The lightweight, low-noise wool shears according to claim 1, characterized in that, The bottom of the pressure claw is provided with a protrusion, and the moving blade is provided with an insertion hole corresponding to the protrusion.
4. The lightweight, low-noise wool shears according to claim 1, characterized in that, A second spring and a second upper bearing are sequentially mounted on the second gear of the second gear shaft from bottom to top. The second upper bearing is located in the second positioning hole on the upper bracket. One end of the second spring contacts the second gear, and the other end contacts the second upper bearing. A second screw is also provided in the second positioning hole, and the bottom of the second screw contacts the second upper bearing. A first spring and a first upper bearing are sequentially mounted on the first gear of the first gear shaft from bottom to top. The first upper bearing is located in the first positioning hole on the upper bracket. One end of the first spring contacts the first gear, and the other end contacts the first upper bearing. A first screw is also provided in the first positioning hole, and the bottom of the first screw contacts the first upper bearing.
5. The lightweight, low-noise wool shears according to claim 1, characterized in that, A boss is provided below the moving blade, and a positioning groove is provided on the fixed blade corresponding to the boss. The boss is slidably connected in the positioning groove. Alternatively, a positioning element is provided on the fixed blade, and a strip hole is provided on the moving blade corresponding to the positioning element. The positioning element passes through the strip hole. The positioning element is a screw. The positioning element is threadedly connected to the fixed blade. A spring and a washer are provided below the nut of the screw and above the moving blade. The screw passes through the spring and the washer.
6. The lightweight, low-noise wool shears according to claim 1, characterized in that, The upper support is equipped with a housing.
7. The lightweight, low-noise wool shears according to claim 1, characterized in that, The pressure claw and the moving blade are integrally formed.
8. The lightweight, low-noise wool shears according to claim 1, characterized in that, The upper support is provided with a pressing bolt, which is threadedly connected to the upper support. The bottom of the pressing bolt is provided with a rolling element, which is slidably connected in the pressing groove of the pressing groove component. The back of the pressing groove component is provided with several pressing rods, and the end of the pressing rod is fitted with a third spring. One end of the third spring contacts the moving blade, and the other end contacts the pressing rod.
9. A lightweight, low-noise wool shears according to claim 8, characterized in that, The rolling element is a ball bearing or a bearing.
10. A lightweight, low-noise wool shears according to claim 1, characterized in that, The handle body is provided with a second drive motor, which is used to drive the second gear shaft to rotate.