End cover for eliminating friction abnormal sound

Abstract

The utility model relates to an end cover used for a shock absorber, in particular to an end cover used for a shock absorber and capable of eliminating friction abnormal sound, which comprises an end cover body, a surface, contacted with a buffer block, on the end cover body is set as a functional surface, and irregularly arranged bulges are arranged on the functional surface. Radial ribs distributed in a radial shape are arranged on the functional face in an array mode and divide the functional face into a plurality of areas, and the protrusions are distributed in the corresponding areas. The end cover capable of eliminating the friction abnormal sound can effectively reduce noise generated when a shock absorber is used.

Description

Technical Field

[0001] The utility model relates to an end cover for a shock absorber, in particular to an end cover for a shock absorber that can eliminate frictional abnormal noise. Background Art

[0002] During the use of a shock absorber, the buffer block at the upper end will contact the lower end cover under the action of pressure. When the pressure is relatively large, the buffer block will be compressed and deformed. Due to the relatively small friction force on the upper surface of the end cover, after the buffer block is squeezed and deformed, it will slip relative to the end cover, resulting in a slipping sound and abnormal noise.

[0003] In order to eliminate this abnormal noise, the patent with the publication number CN214404480U (hereinafter referred to as related patent one) named a shock absorber end cover for preventing impact abnormal noise, the patent with the publication number CN218510068U (hereinafter referred to as related patent two) named a protective cover and a shock absorption structure, and the patent with the publication number CN220910323U (hereinafter referred to as related patent three) respectively increase the friction force by adding protrusions on the contact surface between the end cover and the buffer block, so as to prevent the buffer block and the end cover from being misaligned as much as possible and making it not easy to slip and generate abnormal noise. However, there are drawbacks in the above patents, mainly including: (1) The protrusions provided in related patent two and related patent three are evenly distributed. The evenly distributed protrusions can generate orderly and concentrated vibrations, increasing the probability of generating abnormal noise; (2) The protrusions in related patent one are too scattered, and the contact area with the buffer block is relatively small.

[0004] Based on this, it is necessary to improve the existing technology. Content of the Utility Model

[0005] Technical Purpose: In order to overcome the deficiencies in the existing technology, the utility model provides an end cover for eliminating frictional abnormal noise.

[0006] Technical Solution: To achieve the above purpose, an end cover for eliminating frictional abnormal noise disclosed by the utility model includes an end cover body. The surface of the end cover body that contacts the buffer block is defined as a functional surface, and irregularly arranged protrusions are provided on the functional surface.

[0007] Preferably, radially arranged ribs are arrayed on the functional surface in a radially distributed manner. The radially arranged ribs divide the functional surface into multiple regions, and the protrusions are distributed in the corresponding regions.

[0008] Preferably, a through center hole is provided on the functional surface, and several of the radially arranged ribs are arrayed in the circumferential direction along the axis of the center hole.

[0009] Preferably, the functional surface is circular.

[0010] Preferably, the end cap body is cylindrical, and the circumferential side wall of the end cap body is hollowed out.

[0011] Preferably, the end cap body is made of plastic.

[0012] The utility model has the following technical effects:

[0013] (1) By adding protrusions on the functional surface of the end cap, the friction between the end cap and the buffer block can be increased, effectively avoiding slippage generated when the end cap contacts the buffer block, and reducing the probability of abnormal noise generation.

[0014] (2) On the basis of setting the protrusions, radial ribs are additionally provided, which ensures the contact area between the buffer block and the end cap while increasing the friction.

[0015] (3) In this solution, the arrangement of the protrusions is irregular. When the protrusions are distributed in a regular manner, they can generate more orderly and concentrated vibrations, which usually have larger amplitudes and frequencies and are therefore considered "large" vibrations; in contrast, although the irregularly distributed protrusions can also cause vibrations, due to their irregularity, the generated vibrations are relatively more dispersed, with lower amplitudes and frequencies, and are therefore considered "small" vibrations. Therefore, the protrusions in this solution have a better sound absorption effect compared to the prior art. Description of the Drawings

[0016] Figure 1 It is a distribution schematic diagram of the end cap and the buffer block in the shock absorber;

[0017] Figure 2 It is a top view of the end cap;

[0018] Figure 3 It is an axonometric view of the end cap.

[0019] In the figure, 1, end cap body; 2, buffer block; 3, protrusion; 4, radial rib; 5, area; 6, central hole; A, functional surface. Detailed Embodiments

[0020] The following combines the attached Figure 1 to the attached Figure 3 Describe the principles and features of the present utility model. The examples given are only used to explain the present utility model and are not used to limit the scope of the present utility model.

[0021] Example 1

[0022] An end cover for eliminating frictional abnormal noise includes an end cover body 1. The surface of the end cover body 1 that contacts the buffer block 2 is defined as a functional surface A, and irregularly arranged protrusions 3 are provided on the functional surface A. The shape of the protrusions 3 is not limited here and can be cylindrical, fan-shaped, rectangular, etc., and the corresponding technical effects can be achieved. By providing the protrusions 3, the frictional force between the end cover body 1 and the buffer block 2 can be reduced, the occurrence of slipping can be reduced, and thus the probability of abnormal noise can be reduced. At the same time, in this technical solution, the protrusions 3 are irregularly distributed. Compared with the regularly distributed protrusions 3 in the prior art, the vibration generated by the end cover body 1 is smaller and has a better sound insulation effect.

[0023] Specifically, a central hole 6 is provided at the center of the end cover body 1, and all the protrusions 3 are irregularly arranged around the central hole 6. The end cover body 1 is a cylindrical structure made of plastic material, its circumferential side wall is hollowed out, and its functional surface A is circular.

[0024] Embodiment 2

[0025] As an improvement to Embodiment 1, in this embodiment, by adding radially arranged ribs 4 that are arranged in an array and are radially distributed on the functional surface A, the product can achieve better use effects. This is because if the irregularly arranged protrusions 3 are set alone as in Embodiment 1, the contact area between the end cover body 1 and the buffer block 2 is too small, and the pressure received by the buffer block 2 during contact is too large and it is easily damaged. Therefore, adding the radially arranged ribs 4 can increase the frictional force between the buffer block 2 and the end cover body 1 while ensuring the contact area between the buffer block 2 and the end cover body 1. The radially arranged ribs 4 divide the functional surface A into multiple regions 5, and the protrusions 3 are distributed in the corresponding regions 5. Multiple radially arranged ribs 4 (3 are provided in this embodiment) are arranged in an array along the circumferential direction of the axis of the central hole 6.

[0026] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An end cover for eliminating frictional abnormal noise, comprising an end cover body (1), characterized in that, Set the surface of the end cap body (1) that contacts the buffer block (2) as the functional surface (A), and irregularly arranged protrusions (3) are provided on the functional surface (A).

2. The end cap for eliminating frictional abnormal noise according to claim 1, wherein Radial ribs (4) distributed radially are arranged in an array on the functional surface (A), the radial ribs (4) divide the functional surface (A) into multiple regions (5), and the protrusions (3) are distributed in the corresponding regions (5).

3. The end cover for eliminating frictional abnormal noise according to claim 2, wherein A through central hole (6) is provided on the functional surface (A), and several of the radial ribs (4) are arranged in an array along the circumferential direction of the axis of the central hole (6).

4. The end cap for eliminating frictional abnormal noise according to claim 1, characterized in that, The functional surface (A) is circular.

5. The end cover for eliminating frictional abnormal noise according to claim 4, characterized in that, The end cap body (1) is cylindrical, and the circumferential side wall of the end cap body (1) is hollowed out.

6. The end cover for eliminating frictional abnormal noise according to any one of claims 1 to 5, characterized in that, The end cap body (1) is made of plastic material.

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