A clamp spring dismounting pliers

Abstract

This utility model discloses a snap ring installation and removal pliers, comprising a hollow housing with openings at both the front and rear ends. A drive gear is rotatably connected to the left and right sides of the rear end of the bottom of the inner wall of the housing, and a driven gear is rotatably connected to the front end of the bottom of the inner wall of the housing. Each drive gear has a sliding buckle at the front end of its outer wall, and each driven gear has a retaining buckle at the rear end of its outer wall. Push rods are slidably connected to the left and right sides of the upper end of the outer wall of the housing. Each push rod has an auxiliary block at its upper end, and each auxiliary block has a latch at the front end of its outer wall. Each drive gear has an operating handle at the rear end of its outer wall, and each driven gear has an operating lever at the front end of its outer wall. Each operating lever has a pliers head at its front end. This utility model allows for quick and relatively stable operation when installing and removing snap rings, and prevents the snap ring from falling off due to unstable engagement caused by shaking during contact between the pliers and the snap ring.

Description

Technical Field

[0001] This utility model relates to the field of snap ring pliers, and in particular to a snap ring assembly / disassembly pliers. Background Technology

[0002] As a standard fastening component, snap rings are widely used in modern machinery and equipment. Snap ring pliers, as a specialized tool for removing and installing snap rings, have a significant impact on the efficiency of snap ring installation and removal. Snap ring pliers are divided into shaft snap ring pliers and hole snap ring pliers, used for shaft snap rings and hole snap rings respectively. In the assembly of mechanical equipment, shaft snap rings and hole snap rings are used with similar frequency, which leads to the need to constantly switch between shaft snap ring pliers and hole snap ring pliers when removing and installing snap rings, increasing the labor intensity of workers and the cost of tool storage.

[0003] According to patent number CN218891736U, a utility model patent for an internal and external snap ring pliers includes: an operating screw, a left-hand moving block, a right-hand moving block, a left U-shaped frame, a right U-shaped frame, a left connecting plate, a right connecting plate, and bolts. The left-hand and right-hand moving blocks are respectively screwed onto the left-hand and right-hand threads on the operating screw. The top and bottom ends of the left and right U-shaped frames are rotatably connected to the trunnions of the left-hand and right-hand moving blocks, respectively, and the bottom ends are respectively connected to the left and right clamp arms. The left and right connecting plates are respectively mounted on the left and right clamp arms. Bolts are respectively screwed into the threaded holes on the left and right connecting plates. When disassembling or assembling the spring retaining ring on the hole or shaft, the opposite-direction threads on the operating screw engage with the threaded holes on the moving blocks, thereby controlling the gradual opening or closing action of the left and right clamp arms. This solves the technical problems of traditional snap ring pliers, such as limited functionality and poor gradual action control.

[0004] While the above-mentioned technical solution can complete the installation and removal of the inner and outer retaining rings, the operation of this solution involves rotating the lead screw to open or close the left and right clamp arms, which is relatively slow. In actual operation, the installation and removal of the retaining rings is quick and relatively smooth, while the rotation of the lead screw is slow and causes the entire device to shake during the rotation process. This can easily lead to unstable engagement with the retaining rings, causing the retaining rings to fall off, thus affecting work efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a snap ring removal and installation pliers that can achieve quick and relatively stable operation when installing and removing snap rings, and will not cause unstable engagement due to shaking during the contact between the pliers and the snap ring, thus preventing the snap ring from falling off.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A snap ring assembly / disassembly pliers includes a hollow housing with openings at both the front and rear ends. The left and right sides of the bottom rear end of the inner wall of the housing are rotatably connected to meshing drive gears. The front end of the bottom of the inner wall of the housing has an arc-shaped slide rail with an open top. The upper end of the outer wall of the housing has a first sliding groove that mates with the slide rail. The slide rail and the left and right sides of the first sliding groove are rotatably connected to rotating shafts extending out of the upper end of the first sliding groove. The outer wall of each rotating shaft is rotatably connected to a driven gear that meshes with the corresponding drive gear. The front end of the upper end of the outer wall of each drive gear has a sliding buckle. The sliding buckle includes a buckle body with openings at both the top and front ends, and a slider that slides along the length of the inner wall of the buckle body and can extend out of its front end. The rear of the upper end of the outer wall of each driven gear, on the same axis as the corresponding sliding buckle, has a fixing buckle with an open rear end that mates with it. The left and right sides of the upper end of the outer wall of the housing have downward-facing first sliding groove openings at the positions corresponding to the sliding buckles.

[0008] Each first slot is slidably connected to a push rod that can slide back and forth and is used to drive the corresponding slider to engage with the corresponding fixing buckle. Each push rod has an auxiliary block at its upper end. The upper end of the outer wall of the housing has a second arc-shaped slot that fits between the first sliding groove and the first slot. When the push rod is located in the second slot, it can slide along its length. Each rotating shaft has a first fixing hole and a second fixing hole respectively at its front and rear ends extending out of the outer wall of the first sliding groove. Each auxiliary block has a U-shaped buckle at its front end. Each driving gear has an operating handle extending out of the housing at its rear end. Each driven gear has an operating rod extending out of the housing and retractable at its front end. Each operating rod has a clamp head at its front end.

[0009] By adopting the above technical solution, when using it, select the appropriate function according to the actual use needs. When it is necessary to install and remove the outer retaining spring, push the auxiliary block to slide forward along the inner wall of the first slot and drive the slider in the sliding buckle to slide forward and engage with the corresponding fixing buckle. At the same time, the rear end of the inner wall of the buckle engages with the first fixing hole at the upper end of the corresponding rotating shaft. At this time, the driven gear and the driving gear are a whole and rotate around the center of the driving gear. In this state, the device is an outer clamp and the push rod is located in the second slot. Then, separate the two operating handles. While the two driving gears rotate around their axis, the two rotating shafts rotate in the slide rail and the first slide groove and close inward synchronously. Then, insert the clamp head into the hole of the outer retaining spring through the operating rod. Then close the two operating handles to separate the outer retaining spring and complete the installation and removal of the outer retaining spring.

[0010] When it is necessary to install or remove the inner retaining spring, push the auxiliary block backward and let the slider be located in the buckle body through the push rod. At the same time, the front end of the inner wall of the buckle engages with the second fixing hole corresponding to the front end of the rotating shaft and fixes the rotating shaft. At this time, the two driven gears rotate around the corresponding rotating shaft. In this state, the device is an inner clamp and the push rod is located in the first slot. When the two operating handles are separated, the two driving gears rotate inward synchronously. At this time, the two driven gears meshing with them also rotate outward synchronously at their outer peripheral edges. Then, align the clamp head at the front end of the operating rod with the hole of the inner retaining spring, and then close the two operating handles. At this time, the two driving gears rotate outward synchronously, and the two driven gears also rotate outward synchronously to close the inner retaining spring and complete the work of installing or removing it from the slot. In use, the opening and closing angle of the front end of the device can be increased by adjusting the length of the operating rod to improve its applicability.

[0011] A further feature of this invention is that a second, arc-shaped groove is formed between the upper ends of the two outer walls of the sliding buckle, and the push rod is slidably connected to the second groove when it is in the second groove.

[0012] By adopting the above technical solution, when the device operates with an internal snap ring, the fixing between the push rod and the slider can be avoided, while facilitating the separate operation of the driving gear and the driven gear.

[0013] A further feature of this invention is that the rear end of the inner wall of each buckle and the front end of the inner wall of each fixing buckle are provided with a first permanent magnet for attracting the slider.

[0014] By adopting the above technical solution, the first permanent magnet can attract and fix the slider in the buckle body or the fixed buckle according to actual needs, so as to prevent it from sliding during use and affecting the normal use of the device.

[0015] A further feature of this invention is that the buckle includes a U-shaped connecting rod, a first fixing rod disposed at the rear end of the inner wall of the connecting rod, and a second fixing rod disposed at the front end of the inner wall of the connecting rod.

[0016] By adopting the above technical solution, the rotating shaft and the driven gear can be fixed according to the different operating modes of the inner and outer calipers.

[0017] A further feature of this invention is that the operating rod includes an outer tube with an opening at the front end and an inner tube that slides along the length of the inner wall of the outer tube and extends out of its opening end.

[0018] By adopting the above technical solution, the opening and closing angle of the front end of the device can be increased or decreased by adjusting the length of the operating lever, thereby improving its applicability.

[0019] A further feature of this invention is that a U-shaped fixing groove is provided at the lower end of the outer wall of each operating lever, and each clamp head is rotatably connected to the corresponding fixing groove.

[0020] By adopting the above technical solution, the clamp head of this device can achieve both vertical and curved operating modes, further improving its applicability.

[0021] A further feature of this invention is that each fixing groove has a second permanent magnet at its upper end and rear end, which can attract the corresponding clamp head and is used to fix it.

[0022] By adopting the above technical solution, the fixing effect of the pliers head can be improved through the cooperation of the second permanent magnet and the fixing groove.

[0023] In summary, this utility model has the following beneficial effects:

[0024] Firstly, this utility model allows for quick and relatively stable operation when installing and removing the retaining ring, and the retaining ring will not fall off due to unstable engagement caused by shaking during the contact between the clamp body and the retaining ring.

[0025] Secondly, this utility model can achieve the function of both internal and external calipers, and can further realize vertical and bending angle operation modes, thereby improving its applicability;

[0026] Thirdly, this utility model can increase the opening and closing angle of its front end by adjusting the length of the operating lever to suit different application ranges. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 It is mainly used to show the positional connection relationship of each component;

[0029] Figure 3 It is mainly used to show the positional connection relationship of various components inside the shell;

[0030] Figure 4 It is mainly used to display the fixing groove and the second permanent magnet.

[0031] In the diagram: 1. Housing; 11. Drive gear; 12. Slide rail; 13. First slide groove; 14. Rotating shaft; 15. Driven gear; 16. Sliding buckle; 17. Buckle body; 18. Sliding block; 19. Fixing buckle; 2. First permanent magnet; 21. First slot; 22. Push rod; 23. Auxiliary block; 24. Second slot; 25. Second slide groove; 26. First fixing hole; 27. Second fixing hole; 28. Buckle; 29. ​​Connecting rod; 3. First fixing rod; 31. Second fixing rod; 32. Operating handle; 33. Operating rod; 34. Outer tube; 35. Inner tube; 36. Fixing groove; 37. Second permanent magnet; 38. Pliers head. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Example, refer to Figure 1-4A snap ring assembly / disassembly pliers includes a hollow housing 1 with openings at both the front and rear ends. A drive gear 11 is rotatably connected to the left and right sides of the rear end of the bottom of the inner wall of the housing 1. A slide rail 12 with an open top and an arc shape is provided at the front end of the bottom of the inner wall of the housing 1. A first slide groove 13 is formed downwards at the position of the slide rail 12 on the upper end of the outer wall of the housing 1, which mates with the slide rail 12. A rotating shaft 14 extending out of the upper end of the first slide groove 13 is rotatably connected to the left and right sides of the slide rail 12 and the first slide groove 13. The outer wall of each rotating shaft 14 is rotated... The drive gear 15 is connected to the drive gear 11. Each drive gear 11 has a sliding buckle 16 at the front end of the upper end of its outer wall. The sliding buckle 16 includes a buckle body 17 with an open upper end and a slider 18 that slides along the length of the inner wall of the buckle body 17 and can extend out of its front end. A second sliding groove 25 with an arc shape is provided between the upper ends of the outer walls of the two sliding buckles 16. Each driven gear 15 has a fixed buckle 19 with an open rear end that cooperates with it at the same axis position as the corresponding sliding buckle 16 at the rear of the upper end of its outer wall.

[0037] Each buckle body 17 has a first permanent magnet 2 at the rear end of its inner wall and at the front end of its inner wall for attracting the slider 18. The upper left and right sides of the outer wall of the housing 1 have a first slot 21 with a front-to-back arrangement at the position of the corresponding slider 16. Each first slot 21 is slidably connected to a push rod 22 that can slide back and forth and is used to drive the corresponding slider 18 to engage with the corresponding fixed buckle 19. Each push rod 22 has an auxiliary block 23 at its upper end. The upper end of the outer wall of the housing 1 has a second slot 24 with an arc shape between the first sliding groove 13 and the first slot 21. When the push rod 22 is located in the second slot 24, it can slide along its length.

[0038] Each rotating shaft 14 has a first fixing hole 26 and a second fixing hole 27 respectively opened inward at both ends of its extension from the outer wall of the first sliding groove 13. Each auxiliary block 23 has a U-shaped buckle 28 at its front end, which includes a U-shaped connecting rod 29, a first fixing rod 3 located at the rear end of the inner wall of the connecting rod 29, and a second fixing rod 31 located at the front end of the inner wall of the connecting rod 29. Each driving gear 11 has an operating handle 32 extending out of the housing 1 at its rear end. Each driven gear 15 has a... Each of the front ends is provided with a retractable operating rod 33 extending out of the housing 1. The operating rod 33 includes an outer tube 34 with an opening at the front end and an inner tube 35 that slides along the length of the inner wall of the outer tube 34 and extends out of its opening end. A U-shaped fixing groove 36 is provided at the lower front end of the outer wall of each operating rod 33. A rotatable clamp head 38 is rotatably connected to the left and right sides of the inner wall of each fixing groove 36. A second permanent magnet 37 is provided at the upper end and rear end of the inner wall of each fixing groove 36 to attract the corresponding clamp head 38 and fix it.

[0039] Usage: When using, select the appropriate function according to actual needs. When it is necessary to install and remove the outer retaining spring, push the auxiliary block 23 forward along the inner wall of the first groove 21 on the housing 1, and drive the slider 18 in the sliding buckle 16 forward through the push rod 22 to engage with the corresponding fixing buckle 19. During this process, the push rod 22 drives the slider 18 in the buckle body 17 to slide through the second sliding groove 25, and the slider 18 is attracted and fixed by the first permanent magnet 2 before and after sliding to prevent sliding from affecting its normal operation during use. The first fixing rod 3 on the connecting rod 29 of buckle 28 engages with the first fixing hole 26 on the corresponding rotating shaft 14. At this time, the driven gear 15 and the driving gear 11 are a whole and rotate around the center of the driving gear 11. In this state, the device is an external clamp and the push rods 22 are all located in the second slot 24. Then, the two operating handles 32 are separated. While the two driving gears 11 rotate around their axes, the two rotating shafts 14 slide in the slide rail 12 and the first slide groove 13 and move inward synchronously. The two push rods 22 also slide in the second slide groove 25.

[0040] Next, insert the pliers 38 into the hole of the outer retaining spring using the operating lever 33, then close the two operating handles 32 to separate the outer retaining spring, thus completing the installation and removal of the outer retaining spring. When it is necessary to install and remove the inner retaining spring, push the auxiliary block 23 to slide backward and use the push rod 22 to position the slider 18 inside the buckle body 17. At the same time, the second fixing rod 31 on the connecting rod 29 of the buckle 28 engages with the second fixing hole 27 at the front end of the corresponding rotating shaft 14 and fixes the rotating shaft 14. At this time, the first fixing rod 3 moves away from the corresponding rotating shaft 14. At this time, the two driven gears 15 rotate around the corresponding rotating shaft 14. In this state, the device is an inner pliers and the push rod 22 is located in the first slot 21. When the two operating handles 32 are separated, the two driving gears 11 rotate inward synchronously. At this time, the two driven gears 15 meshing with them also rotate outward synchronously at their outer peripheral edges. Then, align the pliers 38 at the front end of the operating lever 33 with the hole of the inner retaining spring.

[0041] Then, the two operating handles 32 are closed. At this time, the two driving gears 11 rotate outward synchronously, and the two driven gears 15 also rotate outward synchronously to close the inner retaining spring, thereby completing the work of installing or removing it from the slot. In use, the opening and closing angle of the front end of the device can be increased by adjusting the length of the operating rod 33 to allow the inner tube 35 to slide an appropriate length in the outer tube 34. The vertical and bending angles can also be adjusted by rotating the position of the clamp head 38 in the fixing slot 36 to improve its applicability. When adjusting the position of the clamp head 38, the corresponding second permanent magnet 37 can be used to attract and fix the clamp head 38.

[0042] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment that make creative contributions as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A snap ring removal and installation pliers, comprising a hollow housing (1) with openings at both the front and rear ends, characterized in that: The left and right sides of the bottom rear end of the inner wall of the housing (1) are rotatably connected to mutually meshing drive gears (11). The front end of the bottom of the inner wall of the housing (1) is provided with a slide rail (12) with an open top and an arc shape. The upper end of the outer wall of the housing (1) is provided with a first slide groove (13) that cooperates with the slide rail (12) downward. The left and right sides of the slide rail (12) and the first slide groove (13) are rotatably connected to rotating shafts (14) that extend out of the upper end of the first slide groove (13). The outer wall of each rotating shaft (14) is rotatably connected to the corresponding drive gear (11). 11) The meshing driven gear (15) has a sliding buckle (16) at the front end of the upper end of the outer wall of each driving gear (11). The sliding buckle (16) includes a buckle body (17) with an opening at the upper end and the front end, and a slider (18) that slides along the length of the inner wall of the buckle body (17) and can extend out of its front end. A fixing buckle (19) with an opening at the rear end is provided at the same axis position as the corresponding sliding buckle (16) at the rear end of the upper end of the outer wall of each driven gear (15). The left and right sides of the upper end of the outer wall of the housing (1) are provided with a first slot (21) at the position of the corresponding sliding buckle (16). Each first slot (21) is slidably connected to a push rod (22) that can slide back and forth and is used to drive the corresponding slider (18) to engage with the corresponding fixing buckle (19). Each push rod (22) has an auxiliary block (23) at its upper end. The upper end of the outer wall of the housing (1) is provided with a second slot (24) that is arc-shaped and is formed between the first sliding groove (13) and the first slot (21). When the push rod (22) is located in the second slot (24), it can slide along its length. Each rotating shaft (14) extends out. The first groove (13) has a first fixing hole (26) and a second fixing hole (27) respectively opened inward at both ends of the outer wall. Each auxiliary block (23) has a U-shaped buckle (28) at the front end of the outer wall. Each drive gear (11) has an operating handle (32) extending out of the housing (1) at the rear end of the outer wall. Each driven gear (15) has an operating rod (33) extending out of the housing (1) and retractable at the front end of the outer wall. Each operating rod (33) has a clamp head (38) at the front end.

2. The snap ring assembly / disassembly pliers according to claim 1, characterized in that: The upper ends of the outer walls of the two sliding buckles (16) are provided with a second sliding groove (25) in an arc shape, and the push rod (22) is slidably connected to the second sliding groove (25) when it is in the second sliding groove (25).

3. The snap ring assembly / disassembly pliers according to claim 1, characterized in that: Each buckle (17) has a first permanent magnet (2) at the rear end of its inner wall and at the front end of its inner wall for attracting the slider (18).

4. A snap ring assembly / disassembly pliers according to claim 1, characterized in that: The buckle (28) includes a U-shaped connecting rod (29), a first fixing rod (3) located at the rear end of the inner wall of the connecting rod (29), and a second fixing rod (31) located at the front end of the inner wall of the connecting rod (29).

5. A snap ring assembly / disassembly pliers according to claim 1, characterized in that: The operating lever (33) includes an outer tube (34) with an open front end and an inner tube (35) that slides along the length of the inner wall of the outer tube (34) and extends out of its open end.

6. A snap ring assembly / disassembly pliers according to claim 1, characterized in that: Each operating lever (33) has a U-shaped fixing groove (36) at the lower end of its outer wall, and each clamp head (38) is rotatably connected to the corresponding fixing groove (36).

7. A snap ring assembly / disassembly pliers according to claim 6, characterized in that: Each fixing groove (36) has a second permanent magnet (37) at the upper end and rear end of its inner wall that can attract the corresponding clamp head (38) and is used to fix it.

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