Snap spring pliers with inner clamping and outer clamping rapid gear shifting conversion function

Abstract

The invention relates to the technical field of clamp spring pliers, in particular to clamp spring pliers with an inner clamping and outer clamping rapid gear shifting conversion function, which comprise a fixed body and a movable body, plastic handle sleeves are fixedly connected to the fixed body and the movable body, and rectangular sleeve pieces are arranged on the fixed body and the movable body. The plastic handle sleeve parts of the fixed body and the movable body penetrate through the rectangular sleeve piece; a power-assisted mechanism is arranged at the top of the rectangular sleeve piece and comprises a fixed sleeve, a power-assisted screw, a movable block and a pushing shaft, the power-assisted screw is manually rotated, torque in the rotating direction of the power-assisted screw can be converted into transverse thrust of the pushing shaft, the tail of the movable body is transversely extruded through the pushing shaft, and the movable body can be pushed to move through the power-assisted screw. The tail portion of the movable body can be made to be close to the tail portion of the fixed body, manual pressing of the tail portions of the fixed body and the movable body of the clamp spring pliers is replaced, the rotating action can utilize small-amplitude repeated movement which is good at good degree of human body, and operation of the clamp spring pliers is more labor-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of circlip pliers, and specifically to a circlip plier with a function of quickly shifting and switching between internal and external clips. Background Art

[0002] A circlip plier is a special tool used for installing and removing circlips (also known as retaining rings or snap rings). As a fastener, a circlip is installed in the shaft groove or hole groove of a component to restrict the axial movement of the component. A circlip plier is a tool specifically used for installing and removing circlips.

[0003] In the prior art, a circlip plier can switch between internal and external clips to facilitate the disassembly and assembly of external circlips or internal circlips on a shaft. For example, a dual-purpose internal and external circlip plier proposed in the patent application number "CN202010497234.7" can switch between internal and external clips according to needs.

[0004] However, in the above patent application, whether it is an internal clip or an external clip, it is necessary to manually press the tail of the circlip plier. As a fastener, the clamping force exerted by the circlip on the component makes it very laborious and inconvenient to use when disassembling and assembling the circlip by manually pressing the circlip plier. Summary of the Invention

[0005] The purpose of the present invention is to provide a circlip plier with a function of quickly shifting and switching between internal and external clips to solve the problems raised in the above background art.

[0006] The purpose of the present invention can be achieved by the following technical solutions: A circlip plier with a function of quickly shifting and switching between internal and external clips includes a fixed body and a movable body. Plastic handle sleeves are fixedly connected to both the fixed body and the movable body. A rectangular kit is provided on the fixed body and the movable body, and the plastic handle sleeve parts of the fixed body and the movable body pass through the rectangular kit; A boosting mechanism is provided at the top of the rectangular kit. The boosting mechanism includes a fixed sleeve, a boosting screw, a movable block, and a pushing shaft. The fixed sleeve is threadedly connected to the boosting screw. One end of the boosting screw is rotatably connected to the movable block. The pushing shaft is located inside the rectangular kit, and the movable block is used to drive the pushing shaft to move together.

[0007] Preferably, a chute is opened at the top of the rectangular kit. A sliding block is slidably connected in the chute. The top of the sliding block is fixedly connected to the movable block, and the bottom of the sliding block is rotatably connected to the pushing shaft.

[0008] Preferably, a tension spring is fixedly connected to the bottom of the rectangular kit. The bottom of the tension spring is fixedly connected to a movable ring. The top of the movable ring is fixedly connected to a fixed shaft, and the top of the fixed shaft passes through the tension spring and extends into the interior of the rectangular kit.

[0009] Preferably, the bottom of the fixing body has an opening, and the opening at the bottom of the fixing body is adapted to the fixing shaft for positioning the fixing body inside the rectangular kit.

[0010] Preferably, a circular positioning hole is provided inside the fixing body near the upper end, a shifting pin adapted thereto is assembled inside the positioning hole, and a gear position boss with an integral structure is provided at the rear end of the shifting pin; A shifting adjustment groove adapted to the shifting pin is provided near the upper end of the movable body. A shifting button is provided on one side of the fixing body. A compression spring is fixedly connected inside the shifting button. One end of the compression spring is fixedly connected to the side surface of the fixing body. One end of the shifting pin sequentially passes through the positioning hole, the shifting adjustment groove and the compression spring and is connected to the shifting button.

[0011] Preferably, the shifting adjustment groove of the movable body is V-shaped, and an outer clamping gear position concave table and an inner clamping gear position concave table are provided at both ends of the adjustment groove on the movable body.

[0012] Preferably, a first circlip pin is fixedly connected to the foremost end of the fixing body, and a second circlip pin is fixedly connected to the foremost end of the movable body. The first circlip pin and the second circlip pin are in corresponding positions and are respectively located on the vertical central plane of the fixing body and the movable body.

[0013] Preferably, an inner hole is provided at one end of the shifting pin away from the gear position boss. The shifting button is a hollow cylinder with one end closed, and a pin shaft is fixedly connected inside it. The pin shaft is riveted in the inner hole to realize the connection between the shifting pin and the shifting button.

[0014] Advantages of the present invention: 1. By manually rotating the power-assisted screw, the present invention can convert the torque in the rotation direction of the power-assisted screw into the lateral thrust of the pushing shaft. By using the pushing shaft to laterally squeeze the tail of the movable body, the tail of the movable body can be made to approach the tail of the fixing body, replacing the manual pressing of the tails of the fixing body and the movable body by a circlip pliers. The rotation action can utilize the small repetitive movements that the human body is better at, making the operation of the circlip pliers more labor-saving. At the same time, the thread also has self-locking property, and the tails of the fixing body and the movable body will not retract after approaching, and there is no need to continuously apply pressure like manually pressing a circlip pliers.

[0015] 2. In the present invention, by moving the shifting pin up and down along the V-shaped groove of the shifting adjustment groove, avoiding the inability of the movable body to directly move left and right, the indirect left and right movement of the movable body on the fixing body is realized, and the conversion of the outer clamping and inner clamping functions is realized. The inner and outer clamping conversion function enables the same tool to adapt to different types of circlip installation requirements, eliminating the need to replace tools, improving work efficiency, and being applicable to the installation and disassembly of circlips in a variety of working environments. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings; Figure 1 Schematic diagram of the position of the outer card in the present invention; Figure 2 Schematic diagram of the position of the inner card in the present invention; Figure 3 For Figure 1 Schematic diagram of the structure of the rectangular kit in; Figure 4 For Figure 3 Schematic diagram of the structure at the bottom of the rectangular kit in; Figure 5 Schematic diagram of the connection between the fixed body and the movable body in the present invention; Figure 6 For the present invention Figure 5 Left view of the overall structure of; Figure 7 For the present invention Figure 5 Schematic diagram of the structure of the movable body in; Figure 8 For the present invention Figure 5 Schematic diagram of the structure of the fixed body in; Figure 9 For the present invention Figure 5 Schematic diagram of the structure of the shift button in; Figure 10 For the present invention Figure 5 Schematic diagram of the structure of the shift pin in.

[0017] The reference numerals in the figure are as follows: 1, fixed body; 2, movable body; 3, shift pin; 4, compression spring; 5, shift button; 6, plastic grip; 7, first circlip pin; 8, second circlip pin; 9, positioning hole; 10, shift adjustment groove; 11, inner card gear concave; 12, outer card gear concave; 13, gear convex; 14, inner hole; 15, pin shaft; 20, rectangular kit; 21, fixed sleeve; 22, power-assisted screw; 23, movable block; 24, chute; 25, sliding block; 26, push shaft; 27, tension spring; 28, movable ring; 29, fixed shaft; 30, knob; 31, operating shaft. Detailed implementation manners

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1 to 10 shown, a circlip pliers with a quick shift conversion function for internal and external clips includes a fixed body 1 and a movable body 2. A circular positioning hole 9 is provided inside the fixed body 1 near the upper end. A shift pin 3 adapted to it is assembled inside the positioning hole 9. A gear position boss 13 with an integral structure is provided at the rear end of the shift pin 3, and an inner hole 14 is provided at the front end. A first circlip pin 7 is fixedly connected to the front end of the fixed body 1. A shift adjustment groove 10 adapted to the shift pin 3 is provided near the upper end of the movable body 2. The shift pin 3 passes through the positioning hole 9 of the fixed body 1, the shift adjustment groove 10 of the movable body 2, and is connected to a compression spring 4 and a shift button 5.

[0020] A second circlip pin 8 is fixedly connected to the front end of the movable body 2. The first circlip pin 7 and the second circlip pin 8 have the same specifications.

[0021] The shift adjustment groove 10 of the movable body 2 is V-shaped, and an external clip gear position concave platform 12 and an internal clip gear position concave platform 11 are provided at both ends. A gear position boss 13 with an integral structure is provided at the rear end of the shift pin 3. The gear position boss 13 is used to cooperate with the external clip gear position concave platform 12 or the internal clip gear position concave platform 11 to complete gear position locking. The pin shaft 15 on the shift button 5 is riveted to the inner hole 14 of the shift pin 3.

[0022] The first circlip pin 7 and the second circlip pin 8 are in corresponding positions and are both located on the vertical central plane of the fixed body 1 and the movable body 2. This design enables the first circlip pin 7 and the second circlip pin 8 to align with the holes on the external circlip and the internal circlip during use, realizing the clamping and fixing of the external circlip and the internal circlip.

[0023] In this embodiment, plastic handle sleeves 6 are fixedly connected to the outer surfaces of the lower halves of the fixed body 1 and the movable body 2. The plastic handle sleeves 6 have the characteristics of softness and anti-slip, can provide a more comfortable holding feeling for users, and can effectively reduce hand fatigue and discomfort when using the circlip pliers for a long time. At the same time, the plastic handle sleeves 6 can increase the friction between the handle and the hand, preventing slippage during use.

[0024] A rectangular kit 20 is provided on the fixed body 1 and the movable body 2. The plastic handle sleeve 6 parts of the fixed body 1 and the movable body 2 both pass through the rectangular kit 20. A power assist mechanism is provided at the top of the rectangular kit 20. The power assist mechanism includes a fixed sleeve 21, a power assist screw 22, a movable block 23, and a push shaft 26. The push shaft 26 is located inside the rectangular kit 20, on the side of the movable body 2 away from the fixed body 1. The fixed sleeve 21 is fixed to the top of the rectangular kit 20. The fixed sleeve 21 is provided with internal threads, and the outer surface of the power assist screw 22 has external threads. Through the cooperation of the internal threads and the external threads, the fixed sleeve 21 and the power assist screw 22 are threadedly connected. One end of the power assist screw 22 is rotatably connected to the movable block 23. One end of the power assist screw 22 is fixedly connected with a knob 30 with anti-slip lines and an inclined operating shaft 31. The power assist screw rod 22 can be driven to rotate by rotating the knob 30 or the operating shaft 31, making it more convenient to rotate the power assist screw 22.

[0025] A chute 24 is formed at the top of the rectangular kit 20. A sliding block 25 is slidably connected in the chute 24. The top of the sliding block 25 is fixedly connected to the movable block 23, and the bottom of the sliding block 25 is rotatably connected to the push shaft 26. When the movable block 23 moves, the push shaft 26 can be driven to move together through the sliding block 25.

[0026] A tension spring 27 is fixedly connected to the bottom of the rectangular kit 20. The bottom of the tension spring 27 is fixedly connected to a movable ring 28. The tension spring 27 has an upward pulling force on the movable ring 28. The top of the movable ring 28 is fixedly connected to a fixed shaft 29. The top of the fixed shaft 29 extends through the tension spring 27 into the interior of the rectangular kit 20. Both the bottom of the fixed body 1 and the plastic grip 6 thereon have openings that are connected together. The fixed shaft 29 extends into the opening at the bottom of the fixed body 1, clamping the fixed body 1 inside the rectangular kit 20. At this time, the rectangular kit 20 cannot move freely, and the movable body 2 can move freely in the horizontal direction. Pull the movable ring 28 downward to drive the fixed shaft 29 to move downward. The fixed shaft 29 is separated from the fixed body 1. At this time, the rectangular kit 20 can be removed from the fixed body 1, making the rectangular kit 20 freely installable and usable.

[0027] The working principle of a snap ring pliers with an internal and external card quick shift conversion function: During use, the user first presses the shift button 5 according to the need, makes the shift button 5 contact the side of the fixed body 1, so that the compression spring 4 is compressed, the gear boss 13 of the shift pin 3 disengages from the outer card gear concave 12, and the movable body 2 moves up and down along the V-shaped groove of the shift adjustment groove 10, avoiding the first snap spring pin 7 on the same plane of the head of the fixed body 1, and then moves upward along the V-shaped groove of the shift adjustment groove 10 to reach the inner card gear concave 11. Release the shift button 5, and the reset of the compressed compression spring 4 drives the gear boss 13 of the shift pin 3 to contact and lock with the inner card gear concave 11, realizing the conversion from outer card to inner card. Similarly, reverse operation realizes the conversion from inner card to outer card.

[0028] The shift pin 3 moves up and down along the V-shaped groove of the shift adjustment groove 10, avoiding the direct left and right movement of the movable body 2, realizing the indirect left and right movement of the movable body 2 on the fixed body 1, and realizing the conversion of the outer card and inner card functions. The inner and outer card conversion function enables the same tool to adapt to different types of snap spring installation requirements without replacing the tool, improving work efficiency, and is applicable to the installation and disassembly of snap springs in various working environments.

[0029] Such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , whether it is an outer card or an inner card, it is necessary to press the two plastic handle sleeves 6 in the direction of approaching each other, driving the tails of the fixed body 1 and the movable body 2 to approach. When it is necessary to assist the tails of the fixed body 1 and the movable body 2 to approach, rotate the assist screw 22 counterclockwise. The assist screw 22 drives the movable block 23, the sliding block 25 and the push shaft 26 to move, and the push shaft 26 pushes the tail of the movable body 2, so that the tail of the movable body 2 approaches the tail of the fixed body 1, replacing the manual pressing of the two plastic handle sleeves 6.

[0030] After installing or disassembling the snap spring with the snap ring pliers, rotate the assist screw 22 clockwise. The assist screw 22 drives the movable block 23, the sliding block 25 and the push shaft 26 to move, and the push shaft 26 resets; Since the push shaft 26 is located on the side of the tail of the movable body 2 away from the tail of the fixed body 1, if no assistance is required, the plastic handle sleeve 6 of the movable body 2 can also be directly pressed manually, making it more convenient to use the snap ring pliers.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A circlip pliers with a function of quickly shifting and converting between internal and external clamping, comprising a fixed body (1) and a movable body (2), and plastic grips (6) are fixedly connected to both the fixed body (1) and the movable body (2), characterized in that, A rectangular kit (20) is provided on the fixed body (1) and the movable body (2), and the plastic grips (6) of the fixed body (1) and the movable body (2) partially pass through the rectangular kit (20); A boosting mechanism is provided at the top of the rectangular kit (20). The boosting mechanism includes a fixed sleeve (21), a boosting screw (22), a movable block (23) and a push shaft (26). The fixed sleeve (21) is threadedly connected to the boosting screw (22). One end of the boosting screw (22) is rotatably connected to the movable block (23). The push shaft (26) is located inside the rectangular kit (20), and the movable block (23) is used to drive the push shaft (26) to move together.

2. The circlip pliers with a fast shift conversion function for internal and external clamps according to claim 1, characterized in that, A chute (24) is formed at the top of the rectangular kit (20). A sliding block (25) is slidably connected in the chute (24). The top of the sliding block (25) is fixedly connected to the movable block (23), and the bottom of the sliding block (25) is rotatably connected to the push shaft (26).

3. The circlip pliers with a quick shift conversion function for internal and external clips according to claim 1, characterized in that, A tension spring (27) is fixedly connected to the bottom of the rectangular kit (20). The bottom of the tension spring (27) is fixedly connected to a movable ring (28). The top of the movable ring (28) is fixedly connected to a fixed shaft (29). The top of the fixed shaft (29) passes through the tension spring (27) and extends into the interior of the rectangular kit (20).

4. A circlip pliers with a fast shift conversion function for internal and external clips according to claim 3, characterized in that, There is an opening at the bottom of the fixed body (1). The opening at the bottom of the fixed body (1) is adapted to the fixed shaft (29) for positioning the fixed body (1) inside the rectangular kit (20).

5. A circlip pliers with a fast shift conversion function for internal and external clips according to claim 1, characterized in that, A circular positioning hole (9) is formed inside the fixed body (1) near the upper end. A shifting pin (3) adapted thereto is assembled inside the positioning hole (9). A gear shifting boss (13) with an integral structure is provided at the rear end of the shifting pin (3); A shifting adjustment groove (10) adapted to the shifting pin (3) is provided near the upper end of the movable body 2. A shifting button (5) is provided on one side of the fixed body 1. A compression spring (4) is fixedly connected inside the shifting button (5). One end of the spring (4) is fixedly connected to the side surface of the fixed body (1). One end of the shifting pin (3) sequentially passes through the positioning hole (9), the shifting adjustment groove (10) and the compression spring (4) and is connected to the shifting button (5).

6. The circlip pliers with a fast shift conversion function for internal and external clips according to claim 5, characterized in that, The shifting adjustment groove (10) of the movable body (2) is V-shaped. External clamping gear concave platforms (12) and internal clamping gear concave platforms (11) are provided at both ends of the adjustment groove (10) on the movable body (2).

7. A circlip pliers with a fast shift conversion function for internal and external clamping, according to claim 5, characterized in that A first circlip pin (7) is fixedly connected to the front end of the fixed body (1), and a second circlip pin (8) is fixedly connected to the front end of the movable body (2). The first circlip pin (7) and the second circlip pin (8) are in corresponding positions and are respectively located on the vertical central planes of the fixed body (1) and the movable body (2).

8. A circlip pliers with a quick shift conversion function for internal and external clamps according to claim 7, characterized in that, An inner hole (14) is formed at one end of the shifting pin (3) away from the gear shifting boss (13). The shifting button (5) is a hollow cylinder with one end closed. A pin shaft (15) is fixedly connected inside it. The pin shaft (15) is riveted in the inner hole (14) to realize the connection between the shifting pin (3) and the shifting button (5).

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