Tool for assembling snap ring
By designing tools for mounting the snap ring, using the structure of U-shaped opening and middle groove, the problems of swaying and deformation of the snap ring during installation are solved, and the stable expansion and smooth installation of the snap ring are achieved.
Patent Information
- Application Number
- CN202411910880.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-07
AI Technical Summary
When the snap ring is installed on the shaft part, it is difficult for the existing technology to achieve stable operation of the equipment, resulting in the snap ring bend and unable to move down smoothly, resulting in problems such as scratches on the surface of the parts and deformation of the snap ring.
A tool for mounting the snap ring is designed, including a U-shaped opening and a middle groove, which is constrained when expanding in the middle groove to avoid eccentricity and axial deformation.
Through the design of the tool, the snap ring can fall smoothly to the installation position after expansion, avoiding slanting, skew, twisting and stagnation, reducing assembly difficulty and improving assembly efficiency.
Smart Images
Figure CN119567192A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of snap ring assembly, in particular to a tool for snap ring assembly. Background Art
[0002] When the snap ring is installed on the shaft, it needs to pass through the long spline shaft section first and then to the snap ring installation section; and there are multiple gaps in the long spline shaft section, and the diameter of the long spline shaft section is close to the diameter of the snap ring installation section. Therefore, it is difficult to operate the equipment, and most of them are assembled manually. However, the manual operation of the human hand is unstable, resulting in uneven force when the circlip pliers open the snap ring. This can easily cause the snap ring to swing and bend when passing through the shaft, causing the snap ring to contact and get stuck with the shaft (long spline shaft section), and it cannot be smoothly moved down to the installation position of the snap ring, causing scratches on the surface of the parts, deformation of the snap ring and other problems, and assembly is time-consuming and labor-intensive. Summary of the invention
[0003] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art.
[0004] In order to solve the above technical problems, the present invention provides a tool for assembling a snap ring, comprising: The main body has a U-shaped opening inside; the U-shaped opening includes an arc segment and two parallel straight segments, the two straight segments are symmetrically arranged at the front end of the arc segment, and the opening of the U-shaped opening is located at the front end of the two straight segments; The middle groove is used for clamping the clamping 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. The middle groove is formed by being recessed from the wall of the U-shaped opening to the main body with a predetermined width.
[0005] In one embodiment of the present invention, guide angles are respectively provided at both ends of the side walls of the middle groove along the width direction of the middle groove; the guide angles are inclined outward from the rear end of the main body to the front end of the main body.
[0006] In one embodiment of the present invention, the guide angle is 30°.
[0007] In one embodiment of the present invention, the arc segment is a semicircular structure.
[0008] In one embodiment of the present invention, the height of the middle groove is 0.2 mm to 0.5 mm greater than the thickness of the snap ring.
[0009] In one embodiment of the present invention, the distance between the two straight line segments is larger than the inner diameter of the snap ring and is 2 mm to 3 mm smaller than the outer diameter of the snap ring.
[0010] In one embodiment of the present invention, at two straight line segments, the spacing between the side walls of the middle groove away from the middle groove is 1-2 mm larger than the outer diameter of the expanded retaining ring.
[0011] In one embodiment of the present invention, the thickness of the main body is 10 mm to 15 mm; the width of the main body is 10 mm to 15 mm.
[0012] In one embodiment of the present invention, both ends of the U-shaped opening wall are provided with chamfers.
[0013] In one embodiment of the present invention, the main body is made of 45# steel or 40Cr.
[0014] The above technical solution of the present invention has the following advantages compared with the prior art: The tool for assembling the snap ring described in the present invention can first be used to horizontally embed the snap ring into the middle groove when installing the snap ring using the application, with the notch of the snap ring facing the opening of the U-shaped opening. Then, hold the present application with the snap ring and use the snap ring pliers to open the snap ring until the outer diameter of the snap ring reaches the inner wall of the center groove (that is, the expansion of the snap ring is completed). In the process of opening the snap ring, since both 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 relatively small, the snap ring will not deflect, and thus the snap ring will not be skewed, twisted, or bent; it will be constrained by the middle groove so that it will not be axially deformed, so that the snap ring is in the same plane when it is in the open state; in this way, after the snap ring is expanded, when the present application and the snap ring are inserted into the shaft, there will be no deflection, skewness, twisting, or jamming of parts, and it can be smoothly dropped to the snap ring installation position. The present application has a simple structure, is light and convenient; it greatly reduces the difficulty of assembling the snap ring in places such as long spline shaft sections, and avoids the problem of scratches on the surface of parts caused by the twisting of the snap ring; it is easy to operate, saves time and effort, improves assembly efficiency, and is highly practical. In addition, during the expansion of the snap ring, the center groove restricts the outer wall of the snap ring, and the operator can identify whether the expansion of the snap ring is completed by whether the outer wall of the snap ring is against the side wall of the center groove, thereby being able to quickly control the amount of expansion of the snap ring, making the operation more convenient and quick, and at the same time being able to avoid the snap ring from opening violently. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein: Figure 1 It is a structural schematic diagram of a tool for assembling a snap ring in a preferred embodiment of the present invention; Figure 2 yes Figure 1 A top view of a tool for assembling a snap ring; Figure 3 The snap ring is inserted Figure 1 A schematic diagram of a tool for snap ring assembly; Figure 4 is to use Figure 1 A schematic diagram of a tool for mounting a snap ring to a shaft segment; Explanation of the reference numerals in the specification: 100, main body; 110, U-shaped opening; 111, arc segment; 112, straight line segment; 113, opening; 114, chamfer.
[0016] 200, middle groove; 210, guide angle; 300, snap ring; 400. Shafts. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.
[0018] Reference Figure 1~Figure 4 As shown, an embodiment of the present invention provides a tool for assembling a snap ring, comprising: The main body 100 is provided with a U-shaped opening 110 inside; the U-shaped opening 110 includes an arc segment 111 and two parallel straight segments 112, the two straight segments 112 are symmetrically arranged at the front end of the arc segment 111, and the opening 113 of the U-shaped opening 110 is located at the front end of the two straight segments 112; the position where the arc segment 111 and the straight segment 112 are connected has a smooth transition.
[0019] The middle groove 200 is used for clamping the clamping ring 300; the middle groove 200 is arranged on the wall of the U-shaped opening 110, and the middle groove 200 is arranged in a circle along the extension direction of the U-shaped opening 110. The middle groove 200 is formed by being recessed from the wall of the U-shaped opening 110 to the main body 100 with a predetermined width.
[0020] Specifically, when installing the snap ring 300 using the application, the snap ring 300 can be firstly inserted into the middle groove 200 horizontally, with the notch of the snap ring 300 facing the opening 113 of the U-shaped opening 110. Then, the application with the snap ring 300 is held and the snap ring 300 is stretched open using snap ring pliers until the outer diameter of the snap ring 300 reaches the inner wall of the central groove (i.e., the expansion of the snap ring 300 is completed). In the process of opening the snap ring 300, since both sides of the snap ring 300 are in the central groove and the gap between the snap ring 300 and the upper and lower walls of the central groove is relatively small, the snap ring 300 will not swing or the like, and thus the snap ring 300 will not be skewed, twisted, or bent; it will be constrained by the middle groove 200 so that it will not be axially deformed, so that the snap ring 300 is in the same plane when it is opened; in this way, after the snap ring 300 is expanded, when the present application and the snap ring 300 are inserted into the shaft 400, there will be no swing, skew, twist, or jamming of parts, and the snap ring 300 can be smoothly dropped to the installation position. The present application has a simple structure, is light and convenient; it greatly reduces the difficulty of assembling the snap ring 300 in places such as long spline shaft sections, and avoids the problem of the skew of the snap ring 300 causing scratches on the surface of the shaft 400; 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 expansion of the retaining ring 300 is complete by whether the outer wall of the retaining ring 300 is against the side wall of the central groove, thereby quickly controlling the expansion amount of the retaining ring 300, making the operation more convenient and quick, and preventing the retaining ring 300 from opening violently.
[0021] Furthermore, along the width direction of the middle groove 200, guide angles 210 are respectively provided at both ends of the side wall of the middle groove 200; the guide angles 210 are inclined outward from the rear end of the main body 100 to the front end of the main body 100. The angle of the guide angle 210 is 30°. Specifically, the spacing between the two guide angles 210 is greater than the spacing between the middle grooves 200 at the two straight segments 112, so that the snap ring 300 can play a guiding role when entering the middle groove 200, so that the snap ring 300 is easy to be embedded in the middle groove 200.
[0022] Furthermore, the arc segment 111 is a semicircular structure. Specifically, this embodiment can adapt to the circular structure of the snap ring 300 , making it easier for the snap ring 300 to be placed in the U-shaped opening 110 and to be mostly stuck in the middle groove 200 .
[0023] Furthermore, the height of the middle groove 200 is 0.2 mm to 0.5 mm greater than the thickness of the snap ring 300. Specifically, this not only facilitates the placement of the snap ring 300 into the middle groove 200, but also allows the snap ring 300 to be limited when expanding, thereby preventing the snap ring 300 from being skewed or twisted when expanding, thereby smoothly reaching the installation position and completing the assembly.
[0024] Furthermore, the distance M1 between the two straight segments 112 is larger than the inner diameter of the snap ring 300 and 2 mm to 3 mm smaller than the outer diameter of the snap ring 300. Specifically, this embodiment enables the snap ring 300 to be stably and reliably placed in the middle groove 200, preventing the snap ring 300 from falling out of the middle groove 200.
[0025] Furthermore, at the two straight segments 112, the spacing M2 between the side walls of the middle groove 200 away from the middle groove 200 is 1-2 mm larger than the outer diameter of the expanded snap ring 300. Specifically, this embodiment can limit the expansion of the snap ring 300 to avoid the snap ring 300 from being over-expanded and causing failure when the snap ring 300 is expanded, and can also facilitate the removal of the present application when the snap ring 300 is installed at the installation position.
[0026] Furthermore, the thickness of the main body 100 is 10 mm to 15 mm; the width B1 of the main body 100 is 10 mm to 15 mm. Specifically, the size of the main body 100 of this embodiment can ensure the strength of the application on the one hand, and facilitate the operator to hold it on the other hand. The thickness of the main body 100 of the application is uniform.
[0027] Furthermore, chamfers 114 are provided at both ends of the wall of the U-shaped opening 110. Specifically, the chamfers 114 provided in this embodiment can prevent the shaft segment from being scratched or damaged when the sleeve of the present application is mounted on the shaft segment.
[0028] Furthermore, the main body 100 is made of 45# steel or 40Cr. Specifically, the material is available on site, and the processing difficulty of slotting is low and the cost is low.
[0029] The present application is used to install the snap ring 300, and the snap ring 300 is clamped in the middle groove 200 of the present application, so that the operator can easily and quickly use the snap ring pliers to install and expand the snap ring 300 and install it to the specified position, which can effectively avoid scratches on the surface of the shaft 400 when installing the snap ring 300, with high efficiency and strong practicality. At the same time, when the snap ring 300 is expanded, the snap ring 300 is constrained by the middle groove 200, so as to avoid the snap ring 300 from violently opening to the maximum opening limit, causing deformation and damage to the snap ring 300.
[0030] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.
Claims
1. A tool for assembling a snap ring, characterized in that: include: The main body has a U-shaped opening inside; the U-shaped opening includes an arc segment and two parallel straight segments, the two straight segments are symmetrically arranged at the front end of the arc segment, and the opening of the U-shaped opening is located at the front end of the two straight segments; The middle groove is used for clamping the clamping 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. The middle groove is formed by being recessed from the wall of the U-shaped opening to the main body with a predetermined width.
2. The tool for assembling a snap ring according to claim 1, characterized in that: Along the width direction of the middle groove, guide angles are respectively arranged at both ends of the side wall of the middle groove; the guide angles are inclined outward from the rear end of the main body to the front end of the main body.
3. The tool for assembling a snap ring according to claim 2, characterized in that: The guide angle is 30°.
4. The tool for assembling a snap ring according to claim 1, characterized in that: The arc segment is a semicircular structure.
5. The tool for assembling a snap ring according to claim 1, characterized in that: The height of the middle groove is 0.2 mm to 0.5 mm greater than the thickness of the clamping ring.
6. The tool for assembling a snap ring according to claim 1, characterized in that: The distance between the two straight line segments is greater than the inner diameter of the clamping ring and is 2 mm to 3 mm smaller than the outer diameter of the clamping ring.
7. The tool for assembling a snap ring according to claim 6, characterized in that: At the two straight line segments, the spacing between the side walls of the middle groove away from the middle groove is 1-2 mm larger than the outer diameter of the clamping ring after expansion.
8. The tool for assembling a snap ring according to claim 1, characterized in that: The thickness of the main body is 10 mm to 15 mm; the width of the main body is 10 mm to 15 mm.
9. The tool for assembling a snap ring according to claim 1, characterized in that: Both ends of the U-shaped opening wall are provided with chamfers.
10. The tool for assembling a snap ring according to claim 1, characterized in that: The main body is made of 45# steel or 40Cr.