Snap spring pliers

Abstract

The clamp spring pliers comprise a screw rod, a supporting block, a left front arm, a right pliers arm, a left supporting arm, a right supporting arm and two pliers mouths. The supporting block is arranged on the screw rod in a sleeving manner, and the supporting block can do reciprocating motion in the length direction of the screw rod; the left clamp arm and the right clamp arm are hinged to each other, and the joint of the left clamp arm and the right clamp arm is connected to the bottom of the screw. The left supporting arm and the right supporting arm are symmetrically arranged relative to the screw rod; one end of the left supporting arm is hinged to the front side and the rear side of the upper end of the left clamp arm, the other end of the left supporting arm is hinged to the front side and the rear side of the supporting block, one end of the right supporting arm is hinged to the front side and the rear side of the upper end of the right clamp arm, and the other end of the right supporting arm is hinged to the front side and the rear side of the supporting block. The two clamp mouths are detachably arranged at the bottom end of the left clamp arm and the bottom end of the right clamp arm respectively, dismounting and mounting pieces are arranged at the ends of the two clamp mouths, and the structures of the dismounting and mounting pieces are matched with a piece to be dismounted and mounted. The clamp spring opening device provides large clamp spring opening force, can be matched with various clamp springs, is good in practicability and improves working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of mounting and adjusting devices, and in particular to a type of circlip pliers. Background Art

[0002] As an indispensable part for installation in machines and equipment, the circlip (also called retaining ring or buckling ring) plays a certain role in preventing the axial movement of parts on the shaft or hole. At present, in the after-sales stage of automobiles, when disassembling the transmission, it is often encountered that the C-type circlips and circlips with large elasticity are difficult to disassemble because the circlip pliers cannot match them well or because of their installation position. In addition, the shaft end circlips located in the deep hole cannot be disassembled with ordinary circlip pliers, and the cooperation of multiple people is required. On the one hand, the disassembly and assembly failure may occur when the manpower is unstable. On the other hand, it is time-consuming and labor-intensive, causing great inconvenience to users and maintenance personnel. At the same time, there are also problems such as the internal and external circlip pliers are not universal and are easy to fall off during use, which reduces work efficiency and increases maintenance costs.

[0003] Therefore, providing a safe, reliable, practical, simple-structured circlip pliers that can be adapted to a variety of circlips to be disassembled and assembled has become a technical problem that urgently needs to be solved in the field. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a retaining ring pliers that can provide a large opening force to solve the problem of disassembly failure caused by human instability during the disassembly process of the parts to be disassembled. At the same time, a detachable pliers mouth can be adapted to a variety of parts to be disassembled, which has good practicality and improves work efficiency.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A kind of circlip pliers, comprising a screw rod, a support block, a left forearm and a right clamp arm, a left support arm and a right support arm and two clamp jaws; the support block is sleeved on the screw rod, and the support block can reciprocate along the length direction of the screw rod; the left clamp arm and the right clamp arm are hinged to each other, and the connection between the left clamp arm and the right clamp arm is connected to the bottom of the screw rod; the left support arm and the right support arm are symmetrically arranged about the screw rod; one end of the left support arm is hinged to the front and rear sides of the upper end of the left clamp arm, the other end of the left support arm is hinged to the front and rear sides of the support block, one end of the right support arm is hinged to the front and rear sides of the upper end of the right clamp arm, and the other end of the right support arm is hinged to the front and rear sides of the support block; the two clamp jaws are detachably arranged at the bottom ends of the left clamp arm and the right clamp arm respectively, and the ends of the two clamp jaws are provided with disassembly parts, and the structure of the disassembly parts is adapted to the parts to be disassembled.

[0007] First of all, the circlip pliers provided in the present application can drive the left clamp arm and the right clamp arm to open and close by arranging a rotatable connection between the screw rod and the support block so that the support block can make reciprocating motion along the length direction of the screw rod, and can provide a large opening force by connecting the left support arm to the left clamp arm and the right support arm to the right clamp arm. The operation is simple and does not require the cooperation of multiple people, thus solving the problem of disassembly and assembly failure caused by human instability during the disassembly and assembly process.

[0008] Secondly, the present application provides a detachable pliers mouth, and the various structures of the disassembly and assembly parts on the pliers mouth can be adapted to a variety of parts to be disassembled and assembled. When the corresponding pliers mouth structure is needed, it can be directly replaced. It is capable of disassembling and assembling parts with complex internal and external clamping structures, installation positions, and installation structures. At the same time, it solves the problem in the prior art that the internal and external retaining ring pliers are not universal and are easy to fall off during use, thereby improving work efficiency and reducing costs.

[0009] Furthermore, a first cantilever is provided at the lower part of the left clamp arm, and a second cantilever is correspondingly provided on the right clamp arm. The second cantilever is provided with a side groove matching with the first cantilever, and the first cantilever is engaged in the side groove.

[0010] Furthermore, the circlip pliers include a right clamp arm nut, a first connecting hole is opened on the first cantilever, a second connecting hole is opened on the second cantilever, the right clamp arm nut is passed through the second connecting hole and connected to the first connecting hole, so as to hinge the left clamp arm to the right clamp arm; wherein, a first conical surface matching with the right clamp arm nut is provided in the first connecting hole, and a second conical surface matching with the right clamp arm nut is provided in the second connecting hole.

[0011] By setting the connection structure of the left plier arm and the right plier arm, the left plier arm and the right plier arm are hingedly set, which improves the flexibility of the circlip pliers. At the same time, the first conical surface and the second conical surface are set, which is beneficial to the connection of the right plier arm nut, can reduce the friction between the right plier arm nut and the left plier arm and the right plier arm, and the structure is stable.

[0012] Furthermore, a spherical structure is provided at the bottom of the screw rod, a circular hole and a connecting groove are provided on the side of the first cantilever, one end of the screw rod provided with the spherical structure is inserted into the circular hole, and the screw rod slides along the connecting groove, so that the range of motion of the left clamp arm becomes larger, so as to further improve the opening force of the circlip pliers.

[0013] Furthermore, an avoidance structure groove is provided on the right clamp arm nut for avoiding the spherical structure, thereby preventing friction between the spherical structure and the right clamp arm nut from affecting the work of the circlip pliers and further improving the structural stability of the circlip pliers.

[0014] Furthermore, both pliers include support rods with the same shape, one end of one support rod is connected to the left pliers arm, and the other end is connected to a disassembly part; one end of the other support rod is connected to the right pliers arm, and the other end is connected to another disassembly part.

[0015] Furthermore, the shape of the support rod is a bent shape or a straight arm shape, so as to adapt to a variety of parts to be disassembled and assembled, thereby improving the practicality of the circlip pliers.

[0016] Furthermore, the support rod includes a first connecting part and a second connecting part, one end of the first connecting part is connected to the left clamp arm or the right clamp arm, one end of the second connecting part is hinged to the other end of the first connecting part, and the other end of the second connecting part is connected to the disassembly part; the extension direction of the second connecting part has an angle A with the extension direction of the first connecting part, wherein 0°<A≤180°.

[0017] By providing a support rod that can change its shape, it can be switched at will to adapt to parts to be disassembled in different installation positions, thereby enabling the disassembly and installation of parts to be disassembled with complex installation positions or installation structures, thereby improving the flexibility of the use of the circlip pliers, improving user experience and improving work efficiency.

[0018] Furthermore, the disassembly and assembly part is a truncated cone structure or a V-shaped flat mouth structure. Providing disassembly and assembly parts with different structures to adapt to a variety of parts to be disassembled and assembled can improve the use flexibility of the circlip pliers, improve user experience and improve work efficiency.

[0019] Furthermore, the left support arm includes a first support plate, a second support plate and a first connecting plate, the first support plate and the second support plate are arranged in parallel and are both hinged to the left clamp arm and the support block, and the first connecting plate is connected between the first support plate and the second support plate; the right support arm includes a third support plate, a fourth support plate and a second connecting plate, the third support plate and the fourth support plate are arranged in parallel and are both hinged to the right clamp arm and the support block, and the second connecting plate is connected between the third support plate and the fourth support plate.

[0020] By providing a symmetrical structure of the first support plate and the second support plate of the left support arm and a symmetrical structure of the third support plate and the fourth support plate of the right support arm, the stability of the left support arm and the right support arm can be improved, and they are not easy to break, thereby preventing the circlip pliers from becoming unusable due to breakage of the left support arm and / or the right support arm after long-term use, thereby further improving the stability of the circlip pliers. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings required for use in the embodiments of the present application are briefly introduced below.

[0022] Figure 1 This is a schematic structural diagram of a circlip pliers shown in one embodiment of the present application;

[0023] Figure 2 A front view of a circlip pliers shown in one embodiment of the present application;

[0024] Figure 3 A cross-sectional view of a circlip pliers shown in one embodiment of the present application;

[0025] Figure 4 This is a schematic structural diagram of a screw rod of a circlip pliers according to an embodiment of the present application;

[0026] Figure 5 This is a schematic structural diagram of a bolt of a right clamp arm of a circlip pliers according to an embodiment of the present application;

[0027] Figure 6 This is a schematic structural diagram of a left clamp arm of a circlip pliers according to an embodiment of the present application;

[0028] Figure 7 This is a schematic structural diagram of the right clamp arm of the circlip pliers shown in one embodiment of the present application;

[0029] Figure 8 This is a schematic structural diagram of a right clamp arm nut of a circlip pliers according to an embodiment of the present application;

[0030] Fig. 9 This is a schematic structural diagram of a support rod of a circlip pliers according to an embodiment of the present application;

[0031] Fig.10 A schematic structural diagram of a support rod of a circlip pliers according to another embodiment of the present application;

[0032] Fig.11 This is a schematic structural diagram of the disassembly and assembly parts of the circlip pliers shown in one embodiment of the present application;

[0033] Fig.12 This is a schematic structural diagram of the disassembly and assembly parts of the circlip pliers shown in another embodiment of the present application;

[0034] Fig.13 A schematic diagram of the structure of the matching between the disassembly and assembly parts of the circlip pliers and the parts to be disassembled according to one embodiment of the present application;

[0035] Fig.14 A schematic diagram of the structure of the matching between the disassembly and assembly parts of the circlip pliers and the parts to be disassembled according to another embodiment of the present application;

[0036] Fig.15 This is a schematic structural diagram of a left support arm of a circlip pliers according to an embodiment of the present application;

[0037] Fig.16 This is a schematic structural diagram of the right support arm of the circlip pliers shown in one embodiment of the present application.

[0038] Figure numerals: 1-screw; 11-cross bar; 12-spherical structure; 2-support block; 21-screw hole; 22-fixing hole; 3-left clamp arm; 31-first cantilever; 32-first connecting hole; 33-first conical surface; 34-round hole; 35-connecting groove; 36-first assembly hole; 37-second assembly hole; 4-right clamp arm; 41-second cantilever; 42-groove on the side; 43-second connecting hole; 44-second conical surface; 45-third assembly hole; 46-fourth assembly hole; 5-left support Support arm; 51-first support plate; 52-second support plate; 53-first connecting plate; 54-first through hole; 6-right support arm; 61-third support plate; 62-fourth support plate; 63-second connecting plate; 64-second through hole; 7-jaw; 71-disassembly and assembly part; 72-support rod; 721-first connecting part; 722-second connecting part; 8-right clamp arm nut; 81-avoidance structure groove; 82-right clamp arm bolt; 9-rivet; 91-first clamp mouth screw; 92-second clamp mouth screw. DETAILED DESCRIPTION

[0039] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0040] The purpose of the present invention is to provide a circlip pliers to solve the problems that the internal and external circlip pliers are not universal, the circlip disassembly and assembly process consumes manpower and material resources, and the disassembly is difficult.

[0041] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0042] See also Figure 1 -8, a circlip pliers, comprising a screw rod 1, a support block 2, a left pliers arm 3, a right pliers arm 4, a left supporting arm 5, a right supporting arm 6 and two pliers mouths 7.

[0043] The support block 2 is sleeved on the screw rod 1, and the support block 2 can reciprocate along the length direction of the screw rod 1. The left clamp arm 3 and the right clamp arm 4 are hinged to each other, and the connection between the left clamp arm 3 and the right clamp arm 4 is connected to the bottom of the screw rod 1. The left support arm 5 and the right support arm 6 are symmetrically arranged about the screw rod 1.

[0044] One end of the left support arm 5 is hinged to the front and rear sides of the upper end of the left clamp arm 3, and the other end of the left support arm 5 is hinged to the front and rear sides of the support block 2. One end of the right support arm 6 is hinged to the front and rear sides of the upper end of the right clamp arm 4, and the other end of the right support arm 6 is hinged to the front and rear sides of the support block 2.

[0045] The two pliers mouths 7 are detachably arranged at the bottom ends of the left pliers arm 3 and the right pliers arm 4 respectively. The ends of the two pliers mouths 7 are provided with disassembly components 71, and the structure of the disassembly components 71 is adapted to the components to be disassembled.

[0046] In this embodiment, the above-mentioned part to be disassembled is a retaining spring, and the retaining spring has various structural forms.

[0047] Through the connection between the above-mentioned support block 2, left support arm 5 and right support arm 6, the support block 2 can make reciprocating motion along the length direction of the screw rod 1, driving the left support arm 5 and the right support arm 6 to make opening and closing motions about the screw rod 1, so as to drive the left clamp arm 3 and the right clamp arm 4 to make relative opening and closing motions, so as to provide a larger opening force for the retaining ring pliers, and can solve the disassembly and assembly failure caused by human instability during the disassembly and assembly process of the parts to be disassembled. By setting a detachable clamp mouth 7, the disassembly and assembly part 71 structure of the clamp mouth 7 is set to be compatible with the parts to be disassembled, and can be compatible with various retaining rings such as internal retaining rings, external retaining rings and retaining rings with holes on the shaft end through disassembly and assembly. It has good practicality, can save manpower and material resources, and improve work efficiency.

[0048] In one embodiment, if Figure 1 As shown in Figure 3, a first mounting hole is provided at the upper end of the left clamp arm 3, and a second mounting hole is provided at the upper end of the left support arm 5. A rivet 9 is passed through the second mounting hole and connected to the first mounting hole to fix the left support arm 5 to the left clamp arm 3; a third mounting hole is provided at the upper end of the right clamp arm 4, and a fourth mounting hole is provided at the upper end of the right support arm 6. A rivet 9 is passed through the fourth mounting hole and connected to the third mounting hole to fix the right support arm 6 to the right clamp arm 4.

[0049] In one embodiment, if Figure 1 As shown in FIG. 4 , the circlip pliers also include a cross bar 11, which is arranged at the top of the screw rod 1, and a threaded hole is opened on the cross bar 11, the screw rod 1 is passed through the threaded hole, and the cross bar 11 is screwed to the top of the screw rod 1 by applying thread fastening glue.

[0050] In one embodiment, the outer surface of the screw rod 1 is provided with threads, and the support block 2 is provided with a screw hole 21 . The threads are connected to the screw hole 21 so that the support block 2 moves along the threads.

[0051] By rotating the cross bar 11 clockwise or counterclockwise, the screw rod 1 is driven to rotate counterclockwise or clockwise, and finally the support block 2 is driven to reciprocate along the length direction of the screw rod 1 .

[0052] In one embodiment, if Figure 1 -6, a first cantilever 31 is provided at the lower part of the left clamp arm 3, and a second cantilever 41 is correspondingly provided on the right clamp arm 4, and the circlip pliers also include a right clamp arm nut 8 and a right clamp arm bolt 82, the right clamp arm nut 8 passes through the second cantilever 41 and is connected to the first cantilever 31 to hinge the first cantilever 31 and the second cantilever 41, the right clamp arm bolt 82 is provided on the right clamp arm nut 8, and the right clamp arm nut 8 is tightened to the connection between the right clamp arm 4 and the left clamp arm 3 by rotating the right clamp arm bolt 82.

[0053] At least a partial thread is provided on the right clamp arm bolt 82, and the length of the thread can limit the right clamp arm bolt 82 and the right clamp arm nut 8 from completely clamping the left clamp arm 3 and the right clamp arm 4 when they are tightened in combination, so that the circlip pliers have a certain flexibility, simple operation, and improved work flexibility.

[0054] In one embodiment, a spherical structure 12 is provided at the bottom of the screw rod 1, a circular hole 34 and a connecting groove 35 are opened on the side of the first cantilever 31, one end of the screw rod 1 with the spherical structure 12 is passed through the circular hole 34, and the screw rod 1 can slide along the connecting groove 35, that is, when the left clamp arm 3 moves, the screw rod 1 can move along the connecting groove 35, so that the movable range of the left clamp arm 3 is enlarged, so as to further improve the opening force of the circlip pliers.

[0055] The spherical structure 12 is a semi-spherical structure.

[0056] In one embodiment, if Figure 1 As shown in FIG. 7 , a first assembly hole 36 is formed at the bottom end of the left pliers arm 3 , and a top of a support rod 72 is passed through the first assembly hole 36 so as to mount the pliers mouth 7 on the left pliers arm 3 .

[0057] A second assembly hole 37 connected to the first assembly hole 36 is formed on the side wall of the bottom end of the left clamp arm 3. The circlip pliers also include a first clamp mouth screw 91. The first clamp mouth screw 91 is passed through the second assembly hole 37 and abuts against the side wall of the support rod 72. By tightening the first clamp mouth screw 91, a clamp mouth 7 can be fixed to the left clamp arm 3.

[0058] A third assembly hole 45 is formed at the bottom end of the right pliers arm 4 , and a top of another support rod 72 is passed through the third assembly hole 45 so that the pliers mouth 7 can be mounted on the right pliers arm 4 .

[0059] A fourth assembly hole 46 connected to the third assembly hole 45 is provided on the side wall at the bottom end of the right plier arm 4. The circlip pliers also include a second plier mouth screw 92. The second plier mouth screw 92 is passed through the fourth assembly hole 46 and abuts against the side wall of the support rod 72. By tightening the second plier mouth screw 92, the other plier mouth 7 can be fixed to the right plier arm 4.

[0060] By virtue of the detachable pliers mouth 7 provided as above, the pliers mouth 7 can be replaced by disassembly and assembly when a certain form of pliers mouth 7 is needed, thereby improving the flexibility of use of the circlip pliers, enhancing user experience, and improving work efficiency.

[0061] In one embodiment, if Figure 6 As shown in FIG. 7 , a side groove 42 matching with the first cantilever 31 is formed on the second cantilever 41 , and the first cantilever 31 is engaged in the side groove 42 so that the left clamp arm 3 is connected to the right clamp arm 4 .

[0062] A first connecting hole 32 is formed on the first cantilever 31 , a second connecting hole 43 is formed on the second cantilever 41 , and the right clamp arm nut 8 passes through the second connecting hole 43 and is connected to the first connecting hole 32 to hinge the left clamp arm 3 to the right clamp arm 4 .

[0063] Among them, a first conical surface 33 matching with the right clamp arm nut 8 is provided in the first connecting hole 32, and a second conical surface 44 matching with the right clamp arm nut 8 is provided in the second connecting hole 43, which is more conducive to the connection of the right clamp arm nut 8, and at the same time can reduce the friction between the right clamp arm nut 8 and the left clamp arm 3 and the right clamp arm 4, and the structure is stable.

[0064] In one embodiment, if Figure 8 As shown, the right clamp arm nut 8 is also provided with an avoidance structure groove 81 for avoiding the spherical structure 12 to prevent the spherical structure 12 from generating friction with the right clamp arm nut 8 to affect the operation of the circlip pliers, thereby further improving the structural stability of the circlip pliers.

[0065] See also Fig. 9 -14, the two pliers mouths 7 both include support rods 72, and the support rods 72 have the same shape, one end of one support rod 72 is connected to the left pliers arm 3, and the other end is connected to a disassembly component 71, and one end of the other support rod 72 is connected to the right pliers arm 4, and the other end is connected to another disassembly component 71.

[0066] In one embodiment, the shape of the support rod 72 is bent or straight, and the circlip pliers can be adapted to a variety of parts to be disassembled and assembled by disassembling and installing the required bent support rod 72 or straight support rod 72, thereby improving the practicality of the circlip pliers.

[0067] like Fig. 9 As shown, the bending angle of the bent support rod 72 is α, wherein 45°≤α≤90°.

[0068] In another embodiment, if Fig.10As shown, the support rod 72 includes a first connection part 721 and a second connection part 722, one end of the first connection part 721 is connected to the left clamp arm 3 or the right clamp arm 4, one end of the second connection part 722 is hinged to the other end of the first connection part 721, and the other end of the second connection part 722 is connected to the disassembly part 71, and the extension direction of the second connection part 722 has an angle A with the extension direction of the first connection part 721, wherein 0°≤A≤180°.

[0069] By providing a support rod 72 that can change its shape, it can be switched at will to adapt to parts to be disassembled in different installation positions, so that the disassembly and installation of parts to be disassembled with complex installation positions or installation structures can be realized, thereby improving the flexibility of the use of the circlip pliers, improving the user experience and improving work efficiency.

[0070] The structure of the above-mentioned disassembly component 71 is also arranged in the same manner.

[0071] In one embodiment, if Fig.11 As shown, the disassembly part 71 is a conical structure, and an angle B is formed between the side edge line of the frustum of the cone structure and the side wall line of the length direction of the screw 1, wherein 140°≤B<180°. The side edge of the frustum of the cone structure within this angle range can cooperate with the disassembly parts for different holes, which can effectively prevent the disassembly parts from slipping and prevent the circlip pliers from falling out of the hole of the disassembly parts during disassembly, thereby improving the stability of the disassembly and assembly of the circlip pliers and improving the disassembly and assembly efficiency.

[0072] The diameter of the circular bottom surface of the truncated cone structure can be of various types to accommodate parts to be disassembled with different hole diameters. The sizes and volumes of truncated cone structures with different bottom diameters are different. By setting a variety of truncated cone structures with different bottom surfaces to accommodate parts to be disassembled with holes of different specifications, the pliers mouth 7 of the required structure can be quickly replaced, making the circlip pliers more flexible and improving work efficiency.

[0073] In another embodiment, if Fig.12 As shown, the disassembly part 71 is a V-shaped flat mouth structure, which can be adapted to the disassembly parts with inclined sharp corners. There are V-shaped grooves on both sides of the V-shaped flat mouth structure. The angle C of the V-shaped groove ranges from 15°<C≤160° to clamp the inclined sharp corners of the disassembly parts. Different parts to be disassembled have different angles of inclined sharp corners. By replacing V-shaped flat mouth structures of different specifications to adapt to different parts to be disassembled, the flexibility of the circlip pliers is improved and the user experience is improved.

[0074] In other embodiments, the disassembly component 71 may be in other structural forms, which is not specifically limited.

[0075] The V-grooves on both sides are used to cooperate with the open inclined angles of the parts to be disassembled, which can effectively avoid slipping and improve the disassembly efficiency. It can also be used for the disassembly of parts to be disassembled at the ends of shafts in narrow spaces and deep holes, thereby improving the practicability of the circlip pliers, improving work efficiency, and avoiding the problem of disassembly failure due to the incompatibility of the pliers mouth 7 of the circlip pliers.

[0076] Combine the following Figure 1 As shown in the figure, the working process of the circlip pliers is introduced in detail:

[0077] In one embodiment, for a part 71 to be disassembled in a hole, a pliers mouth 7 of a frustum-conical structure of corresponding diameter is selected, the frustum-conical structure is inserted into the hole of the part 71 to be disassembled, the circlip pliers are manually held, and the cross bar 11 is rotated clockwise to realize the clockwise rotation of the screw 1, and drive the support block 2 to move upward, and the support block 2 drives the left support arm 5 and the right support arm 6 to open the left pliers arm 3 and the right pliers arm 4. At this time, the pliers mouth 7 will clamp the part 71 to be disassembled inward, so that the diameter of the part 71 to be disassembled is smaller than the diameter of the circular hole where the part 71 to be disassembled is located, and the part 71 to be disassembled in the hole is taken out upward.

[0078] In the above process, since the truncated cone structure has a taper, under the tension of the part 71 to be disassembled, the part 71 to be disassembled tends to move toward the circlip pliers, which can reduce the risk of the part 71 to be disassembled falling out and has high safety.

[0079] In another embodiment, a part to be disassembled 71 is applied to an oblique opening shaft, a pliers mouth 7 with a V-shaped flat mouth structure is selected, the V-shaped groove is clamped on the oblique mouth tip of the part to be disassembled 71, and the crossbeam is rotated counterclockwise, so that the screw 1 rotates counterclockwise to drive the support block 2 to move downward, and at the same time, the support block 2 drives the left support arm 5 and the right support arm 6 to clamp inward, and the left pliers arm 3 and the right pliers arm 4 move inward. At this time, the pliers mouth 7 will open the part to be disassembled 71 outward, so that the diameter of the part to be disassembled 71 is larger than the diameter of the shaft end, and the part to be disassembled 71 is moved downward to be installed in the retaining ring groove at the shaft end.

[0080] Since the disassembly part 71 of the V-groove has an inclination during the above process, the disassembly part 71 has a tendency to move toward the bottom of the V-groove under the tension of the disassembly part 71, which can greatly reduce the problem of the disassembly part 71 falling out.

[0081] See also Fig.15 -16, the support block 2 is also provided with a fixing hole 22, and two fixing holes 22 are arranged, and the two fixing holes 22 are respectively located at the front and rear sides of the support block 2, and are used to fix the left support arm 5 and the right support arm 6. By combining and connecting the support block 2 with the left support arm 5 and the right support arm 6, the opening form of the mechanical left clamp arm 3 and the right clamp arm 4 can be magnified, which solves the problem that the existing circlip pliers cannot be used interchangeably with internal and external clamps.

[0082] The left support arm 5 includes a first support plate 51, a second support plate 52 and a first connecting plate 53. The first support plate 51 and the second support plate 52 are arranged in parallel and are both hinged to the left clamp arm 3 and the support block 2. The first connecting plate 53 is connected between the first support plate 51 and the second support plate 52, and a plurality of first through holes 54 are opened in the lower half of the first support plate 51 and the second support plate 52. Fasteners pass through the first through holes 54 and are connected to the fixing holes 22 to fix the left support arm 5 on the support block 2.

[0083] The right support arm 6 includes a third support plate 61, a fourth support plate 62 and a second connecting plate 63. The third support plate 61 and the fourth support plate 62 are arranged in parallel and are both hinged to the right clamp arm 4 and the support block 2. The second connecting plate 63 is connected between the third support plate 61 and the fourth support plate 62, and a plurality of second through holes 64 are opened in the lower half of the third support plate 61 and the fourth support plate 62. Fasteners pass through the second through holes 64 and are connected to the fixing holes 22 to fix the right support arm 6 to the support block 2.

[0084] By providing a plurality of first through holes 54 and second through holes 64, the lengths of the left support arm 5 and the right support arm 6 can be adjusted to adjust the opening force of the circlip pliers, thereby improving the flexibility and practicality of the circlip pliers and enhancing the user experience.

[0085] Furthermore, by providing a symmetrical structure of the first support plate 51 and the second support plate 52 of the left support arm 5 and a symmetrical structure of the third support plate 61 and the fourth support plate 62 of the right support arm 6, the stability of the left support arm 5 and the right support arm 6 can be improved, and they are not easy to break, thereby preventing the circlip pliers from becoming unusable due to breakage of the left support arm 5 and / or the right support arm 6 after long-term use, thereby further improving the stability of the circlip pliers.

[0086] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0087] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0088] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A circlip pliers, characterized in that: include: Screw; A support block is sleeved on the screw rod, and the support block can reciprocate along the length direction of the screw rod; A left clamp arm and a right clamp arm, wherein the left clamp arm and the right clamp arm are hingedly connected to each other, and a connection point between the left clamp arm and the right clamp arm is connected to the bottom of the screw rod; The left support arm and the right support arm are symmetrically arranged about the screw rod; One end of the left support arm is hinged to the front and rear sides of the upper end of the left clamp arm, and the other end of the left support arm is hinged to the front and rear sides of the support block; one end of the right support arm is hinged to the front and rear sides of the upper end of the right clamp arm, and the other end of the right support arm is hinged to the front and rear sides of the support block; The two pliers mouths are detachably arranged at the bottom ends of the left pliers arm and the right pliers arm respectively, and the ends of the two pliers mouths are provided with disassembly parts, and the structure of the disassembly parts is adapted to the parts to be disassembled.

2. The circlip pliers according to claim 1, characterized in that: A first cantilever is arranged at the lower part of the left clamp arm, and a second cantilever is correspondingly arranged on the right clamp arm. A side groove matching with the first cantilever is provided on the second cantilever, and the first cantilever is engaged in the side groove.

3. The circlip pliers according to claim 2, characterized in that: The circlip pliers include a right clamp arm nut, a first connecting hole is formed on the first cantilever, a second connecting hole is formed on the second cantilever, and the right clamp arm nut is passed through the second connecting hole and connected to the first connecting hole, so as to hinge the left clamp arm to the right clamp arm; Wherein, a first conical surface matching with the right clamp arm nut is arranged in the first connecting hole, and a second conical surface matching with the right clamp arm nut is arranged in the second connecting hole.

4. The circlip pliers according to claim 3, characterized in that: The bottom of the screw rod is provided with a spherical structure, the side of the first cantilever is provided with a connected circular hole and a connecting groove, one end of the screw rod provided with the spherical structure is inserted into the circular hole, and the screw rod slides along the connecting groove.

5. The circlip pliers according to claim 4, characterized in that: The right clamp arm nut is provided with an avoidance structure groove for avoiding the spherical structure.

6. The circlip pliers according to claim 1, characterized in that: The two pliers mouths both include support rods, and the support rods have the same shape, wherein one end of one of the support rods is connected to the left pliers arm, and the other end is connected to one of the disassembly components; One end of another support rod is connected to the right clamp arm, and the other end is connected to another disassembly component.

7. The circlip pliers according to claim 6, characterized in that: The support rod is in a bent shape or a straight arm shape.

8. The circlip pliers according to claim 6, characterized in that: The support rod includes a first connection part and a second connection part, one end of the first connection part is connected to the left clamp arm or the right clamp arm, one end of the second connection part is hinged to the other end of the first connection part, and the other end of the second connection part is connected to the disassembly component; An extension direction of the second connection portion and an extension direction of the first connection portion form an angle A, wherein 0°<A≤180°.

9. The circlip pliers according to claim 1, characterized in that: The disassembly and assembly part is a truncated cone structure or a V-shaped flat mouth structure.

10. The circlip pliers according to claim 1, characterized in that: The left support arm comprises a first support plate, a second support plate and a first connecting plate, the first support plate and the second support plate are arranged in parallel and are both hinged to the left clamp arm and the support block, and the first connecting plate is connected between the first support plate and the second support plate; The right support arm includes a third support plate, a fourth support plate and a second connecting plate. The third support plate and the fourth support plate are arranged in parallel and are both hinged to the right clamp arm and the support block. The second connecting plate is connected between the third support plate and the fourth support plate.

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