Tool for assembling snap ring
By designing a tool for clasp assembly, employing a U-shaped opening and a central groove structure, the problem of unstable clasp installation was solved, enabling stable expansion and smooth installation of the clasp, avoiding scratches on parts, and improving assembly efficiency.
Patent Information
- Application Number
- CN202423190443.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In the existing technology, it is difficult to achieve stable assembly when the retaining ring is installed on the shaft, which leads to the retaining ring wobble and bend, causing scratches on the surface of the parts and making the assembly time-consuming and laborious.
Design a tool for assembling retaining rings, featuring a U-shaped opening and a central groove. After the retaining ring is inserted into the central groove, it is spread open by retaining ring pliers to ensure that the retaining ring does not wobble during the expansion process. The guide angle and groove are used to limit the retaining ring to be on the same plane, avoiding skewness and twisting, and achieving smooth installation.
It improves the stability and efficiency of snap ring assembly, avoids scratches on the surface of parts, simplifies and saves effort in operation, reduces assembly difficulty, and improves assembly efficiency.
Smart Images
Figure CN223604307U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a snap ring assembly technical field especially a tool for snap ring assembly. BACKGROUND
[0002] When the snap ring is installed to the shaft, it needs to pass through the long spline shaft section and then the snap ring installation shaft section; there are multiple notches in the long spline shaft section, and the diameter of the long spline shaft section is close to that of the snap ring installation shaft section. Therefore, it is difficult to realize the equipment operation, and manual assembly is mostly adopted, but the manual operation is unstable, which leads to uneven force of the snap ring pliers when opening the snap ring, so that the snap ring is easily deflected and bent when passing through the shaft, which leads to the contact of the snap ring and the shaft (the long spline shaft section) and causes the snap ring to be unable to smoothly move down to the installation position of the snap ring, and causes the surface of the part to be scratched, the snap ring to be deformed and other problems, and the assembly is time-consuming and laborious. SUMMARY
[0003] Therefore, the utility model wants to solve the technical problem in the prior art.
[0004] To solve the above technical problems, the utility model provides a tool for snap ring assembly, which comprises:
[0005] The main body is internally provided with a U-shaped opening; the U-shaped opening comprises a circular arc section and two parallel straight sections, the two straight sections are symmetrically arranged at the front end of the circular arc section, and the opening of the U-shaped opening is located at the front end of the two straight sections;
[0006] The middle groove is used for clamping the snap ring; the middle groove is arranged on the wall body of the U-shaped opening, and a circle of the middle groove is arranged along the extension direction of the U-shaped opening, and the middle groove is recessed from the wall body of the U-shaped opening to the main body by a predetermined width.
[0007] In an embodiment of the utility model, two ends of the side wall of the middle groove are respectively provided with guide angles along the width direction of the middle groove; the guide angles are inclined outward from the tail end of the main body to the front end of the main body.
[0008] In an embodiment of the utility model, the angle of the guide angle is 30°.
[0009] In an embodiment of the utility model, the circular arc section is a semicircular structure.
[0010] In an embodiment of the utility model, the height of the middle groove is greater than the thickness of the snap ring by 0.2 mm to 0.5 mm.
[0011] In an embodiment of the utility model, the distance between the two straight sections is greater than the inner diameter of the snap ring and is smaller than the outer diameter of the snap ring by 2 mm to 3 mm.
[0012] In one embodiment of the utility model, the distance between the side wall of the middle groove and the outer diameter of the expanded snap ring is 1-2mm.
[0013] In one embodiment of the utility model, the thickness of the main body is 10-15mm; and the width of the main body is 10-15mm.
[0014] In one embodiment of the utility model, the two ends of the U-shaped opening wall body are provided with chamfers.
[0015] In one embodiment of the utility model, the main body is made of 45# steel or 40Cr.
[0016] Compared with the prior art, the above technical scheme of the utility model has the following advantages:
[0017] The tool for snap ring assembly can be used to embed the snap ring into the middle groove horizontally, and the notch of the snap ring faces the opening of the U-shaped opening. Then the tool is held and the snap ring is expanded by using the circlip pliers until the outer diameter of the snap ring reaches the inner wall position of the center groove (i.e. the snap ring is expanded). In the process of expanding the snap ring, the two sides of the snap ring are in the center groove, and the gap between the snap ring and the upper and lower walls of the center groove is small, so the snap ring will not be deflected, twisted or bent. The snap ring is restrained by the middle groove, so it will not be axially deformed, and the snap ring is in the same plane in the open state. Therefore, the snap ring will not be deflected, twisted or bent during the process of expanding the snap ring and fitting the tool and the snap ring into the shaft part, and it can smoothly fall into the snap ring installation position. The tool is simple, light and convenient. It greatly reduces the assembly difficulty of the snap ring in the long spline shaft section and avoids the problem of scratching the surface of the parts caused by the deflection of the snap ring. It is easy to operate, saves time and effort, improves assembly efficiency and is practical. In addition, in the process of expanding the snap ring, the center groove limits the outer wall of the snap ring, and the operator can identify whether the snap ring is expanded by whether the outer wall of the snap ring is in contact with the side wall of the center groove, so that the expansion amount of the snap ring can be quickly controlled, and the operation is more convenient and fast, and the violent opening of the snap ring can be avoided. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to make the content of the utility model more easily understood, the utility model will be further described in detail below according to the specific embodiments of the utility model and in conjunction with the drawings, in which:
[0019] Figure 1 is a structural schematic view of a tool for snap ring assembly in the preferred embodiment of the utility model;
[0020] Figure 2 isFigure 1 a top view of the tool for snap ring assembly;
[0021] Figure 3 is a schematic diagram of the tool for snap ring assembly; Figure 1
[0022] Figure 4 is a schematic diagram of installing a snap ring to a shaft segment by using the tool for snap ring assembly; Figure 1
[0023] Description of the drawings: 100, main body; 110, U-shaped opening; 111, circular arc segment; 112, straight line segment; 113, opening; 114, chamfer.
[0024] 200, middle groove; 210, guide angle;
[0025] 300, snap ring;
[0026] 400, shaft. DETAILED DESCRIPTION
[0027] The utility model will be further described below in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.
[0028] Referring to Figures 1-4 , the utility model embodiment provides a tool for snap ring assembly, comprising:
[0029] The main body 100 is internally provided with a U-shaped opening 110; the U-shaped opening 110 includes a circular arc segment 111 and two parallel straight line segments 112, and the two straight line segments 112 are symmetrically arranged at the front end of the circular arc segment 111; the opening 113 of the U-shaped opening 110 is located at the front end of the two straight line segments 112; the position where the circular arc segment 111 is connected with the straight line segment 112 is smoothly transitioned.
[0030] The middle groove 200 is used for clamping the snap ring 300; the middle groove 200 is arranged on the wall body of the U-shaped opening 110, and a circle of the middle groove 200 is arranged along the extension direction of the U-shaped opening 110; the middle groove 200 is recessed from the wall body of the U-shaped opening 110 to the main body 100 by a predetermined width.
[0031] Specifically, when installing the retaining ring 300, the retaining ring 300 can be first inserted laterally into the central groove 200, with the notch of the retaining ring 300 facing the opening 113 of the U-shaped opening 110. Then, hold the device with the retaining ring 300 installed and use retaining ring pliers to pry open the retaining ring 300 until the outer diameter of the retaining ring 300 reaches the inner wall of the central groove (i.e., the retaining ring 300 is fully expanded). During the process of opening the retaining ring 300, since both sides of the retaining ring 300 are located in the central groove and the gap between the retaining ring 300 and the upper and lower walls of the central groove is relatively small, the retaining ring 300 will not wobble, thus preventing skewing, twisting, or bending. Constrained by the central groove 200, axial deformation will not occur, ensuring that the retaining ring 300 is on the same plane when open. Therefore, when the retaining ring 300 is expanded and the entire application and the retaining ring 300 are fitted onto the shaft 400, there will be no wobble, skewing, twisting, or jamming of parts, allowing it to fall smoothly to its installation position. This application has a simple structure, is lightweight and convenient; it greatly reduces the assembly difficulty of the retaining ring 300 in long spline shaft sections and avoids the problem of scratches on the surface of the shaft 400 caused by the skewing of the retaining ring 300; it is easy to operate, improves assembly efficiency, and is highly practical. In addition, during the expansion of the retaining ring 300, the central groove restricts the outer wall of the retaining ring 300. The operator can identify whether the retaining ring 300 has completed expansion by whether the outer wall of the retaining ring 300 is against the side wall of the central groove. This allows for quick control of the expansion amount of the retaining ring 300, making the operation more convenient and faster, while also preventing the retaining ring 300 from being forcibly opened.
[0032] Furthermore, along the width direction of the central groove 200, guide angles 210 are respectively provided at both ends of the sidewall of the central groove 200; the guide angles 210 slope outward from the tail end to the front end of the main body 100. The angle of the guide angles 210 is 30°. Specifically, the distance between the two guide angles 210 is greater than the distance between the central grooves 200 at the two straight segments 112, so that it can play a guiding role when the retaining ring 300 enters the central groove 200, making it easier for the retaining ring 300 to be embedded in the central groove 200.
[0033] Furthermore, the arc segment 111 has a semi-circular structure. Specifically, this embodiment can accommodate the circular structure of the retaining ring 300, making it easier for the retaining ring 300 to be placed in the U-shaped opening 110 and mostly locked in the central groove 200.
[0034] Furthermore, the height of the central groove 200 is 0.2 mm to 0.5 mm greater than the thickness of the retaining ring 300. Specifically, this facilitates the insertion of the retaining ring 300 into the central groove 200 and also limits the retaining ring 300 during expansion, preventing it from tilting or twisting during expansion, thus ensuring it reaches the installation position smoothly and completes the assembly.
[0035] Further, the distance M1 between the two straight segments 112 is greater than the inner diameter of the snap ring 300 and 2-3 mm less than the outer diameter of the snap ring 300. Specifically, the embodiment enables the snap ring 300 to be stably and reliably placed in the middle groove 200, avoiding the snap ring 300 from being pulled out of the middle groove 200.
[0036] Further, at the two straight segments 112, the distance M2 between the side walls of the middle groove 200 is 1-2 mm greater than the outer diameter of the expanded snap ring 300. Specifically, the embodiment can limit the expansion of the snap ring 300, avoiding excessive expansion of the snap ring 300 to cause the snap ring 300 to fail, and also enabling the application to be easily removed after the snap ring 300 is installed to the installation position.
[0037] Further, the thickness of the main body 100 is 10-15 mm, and the width B1 of the main body 100 is 10-15 mm. Specifically, the size of the main body 100 of the embodiment can ensure the strength of the application and facilitate the operator to hold it. The thickness of the main body 100 of the application is uniform.
[0038] Further, the two ends of the wall of the U-shaped opening 110 are provided with chamfers 114. Specifically, the chamfers 114 of the embodiment can avoid scratching the shaft segment when the application is sleeved on the shaft segment, causing damage to the shaft segment.
[0039] Further, the main body 100 is made of 45# steel or 40Cr. Specifically, this material is readily available, and the grooving process has low difficulty and low cost.
[0040] The application is used for installing the snap ring 300, and the snap ring 300 is clamped in the middle groove 200 of the application, so that the operator can easily and quickly use the snap spring pliers to install and expand the snap ring 300 to the specified position, which can effectively avoid scratching the surface of the shaft 400 during installation of the snap ring 300, has high efficiency and strong practicality. At the same time, during expansion of the snap ring 300, the snap ring 300 is constrained by the middle groove 200, thereby avoiding violent opening of the snap ring 300 to the maximum opening limit, causing deformation and damage of the snap ring 300.
[0041] Obviously, the above embodiments are only examples for clear illustration, and are not a limitation on the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the application.
Claims
1. A tool for snap ring assembly, characterized by: Comprise: The main body is internally provided with a U-shaped opening; the U-shaped opening comprises a circular arc segment and two parallel straight line segments, the two straight line segments are symmetrically arranged at the front end of the circular arc segment, and the opening of the U-shaped opening is located at the front end of the two straight line segments; The middle groove is used for clamping the snap ring; the middle groove is arranged on the wall of the U-shaped opening, and the middle groove is arranged in a circle along the extension direction of the U-shaped opening, and the middle groove is recessed from the wall of the U-shaped opening to the main body by a predetermined width.
2. A tool for snap ring assembly as claimed in claim 1, wherein: Along the width direction of the middle groove, the two ends of the side wall of the middle groove are respectively provided with guide angles; the guide angles are inclined outward from the tail end of the main body to the front end of the main body.
3. A tool for snap ring assembly as defined in claim 2, wherein: The angle of the guide angle is 30°.
4. The tool for snap ring assembly of claim 1, wherein: The circular arc segment is a semicircular structure.
5. The tool for snap ring assembly of claim 1, wherein: The height of the middle groove is greater than the thickness of the snap ring by 0.2mm-0.5mm.
6. The tool for snap ring assembly of claim 1, wherein: The distance between the two straight line segments is greater than the inner diameter of the snap ring and smaller than the outer diameter of the snap ring by 2mm-3mm.
7. A tool for snap ring assembly as defined in claim 6, wherein: At the two straight line segments, the distance between the middle groove far away from the side wall of the middle groove is greater than the outer diameter of the expanded snap ring by 1-2mm.
8. The tool for snap ring assembly of claim 1, wherein: The thickness of the main body is 10mm-15mm; the width of the main body is 10mm-15mm.
9. The tool for snap ring assembly of claim 1, wherein: The two ends of the U-shaped opening wall are provided with chamfers.
10. The tool for snap ring assembly of claim 1, wherein: The main body is made of 45# steel or 40Cr.