CN214305005U

CN214305005U - Automobile shock absorber ware dust cover antifriction abnormal sound structure

Info

Publication number: CN214305005U
Application number: CN202022987990.6U
Authority: CN
Inventors: 谭成友; 李沛然; 李冰峰
Original assignee: China Automotive Engineering Research Institute Co Ltd
Current assignee: China Automotive Engineering Research Institute Co Ltd
Priority date: 2020-12-12
Filing date: 2020-12-12
Publication date: 2021-09-28
Anticipated expiration: 2030-12-12

Abstract

The utility model provides an automobile shock absorber ware dust cover antifriction abnormal sound structure, including piston assembly, piston assembly's piston rod overlaps outward in proper order and is equipped with dust cover and damping spring, the dust cover is the bellows form, and all leaves the interval between damping spring, piston rod and the dust cover, the piston assembly upper end is provided with the buffer block, and the buffer block top is connected with the spring holder, the upper end of dust cover is through the fixed suit of interference fit on the buffer block, and the lower spring holder is installed to the lower extreme of piston rod, and the spring holder is connected respectively at the damping spring both ends and is gone up the spring holder down, is equipped with round buffering bump on the lower terminal surface of dust cover, the buffering bump is the semicircle sphere. Can effectively avoid the bumper shock absorber at compression or resilience in-process, the dust cover produces the condition of friction abnormal sound with peripheral contact, promotes the car quality, improves and drives the comfort level.

Description

Automobile shock absorber ware dust cover antifriction abnormal sound structure

Technical Field

The utility model relates to an automobile parts technical field, concretely relates to automobile shock absorber dust cover antifriction abnormal sound structure.

Background

The shock absorber is used for inhibiting the shock when the spring absorbs the shock and rebounds and the impact from the road surface. The damping device is widely applied to automobiles and is used for accelerating the attenuation of the vibration of a frame and an automobile body so as to improve the driving smoothness of the automobiles. When the shock absorber passes through the uneven road surface, although the shock absorbing spring can filter the shock of the road surface, the spring can still reciprocate, and the shock absorber is used for inhibiting the spring from jumping. In the existing shock absorber, friction or impact is easy to generate in the compression and rebound processes, and abnormal sound is generated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art at least, innovated a car shock absorber dust cover antifriction abnormal sound structure very much, can reduce the dust cover and produce the friction abnormal sound with peripheral contact.

In order to realize the above object of the utility model, the utility model provides an automobile shock absorber dust cover antifriction abnormal sound structure, including piston assembly, piston assembly's piston rod overlaps outward in proper order and is equipped with dust cover and damping spring, the dust cover is the bellows form, and all leaves the interval between damping spring, piston rod and the dust cover, piston assembly upper end is provided with the buffer block, and the buffer block top is connected with the spring holder, the upper end of dust cover is passed through the fixed suit of interference fit on the buffer block, and the spring holder is installed down to the lower extreme of piston rod, and the spring holder is connected respectively at the damping spring both ends and is gone up spring holder and lower spring holder, is equipped with round buffering bump on the lower terminal surface of dust cover, the buffering bump is semi-sphere.

In the scheme, the method comprises the following steps: the buffering salient points are uniformly distributed on the lower end face in a circumferential mode. The stress points are more uniform and are not easy to deviate.

In the scheme, the method comprises the following steps: the lower end surface is an inclined surface which is gradually inclined outwards from inside to outside. Increase the lateral rigidity of dust cover bottom, further avoid producing the abnormal sound.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: point-to-point contact can be formed through the buffering salient points, the situation that friction abnormal sound is generated when the dustproof cover is in contact with the periphery in the compression or rebound process of the shock absorber can be effectively avoided, the quality of an automobile is improved, and the driving comfort level is improved; particularly, the buffering salient points are arranged to be semi-spherical, so that the external part is smooth, edges and corners do not exist, the friction is smaller, and abnormal sound is not easy to generate.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a cross-sectional view of the bottom end of the dust cap;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a top view of the dust cap.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-4, an automobile shock absorber dust cover anti-friction abnormal sound structure comprises a piston assembly 4, and a dust cover 3 and a damping spring 1 are sequentially sleeved outside a piston rod of the piston assembly 4. The dust cover 3 is in a corrugated pipe shape, and spaces are reserved among the damping spring 1, the piston rod and the dust cover 3. The upper end of the piston assembly 4 is provided with a buffer block 2, and the top of the buffer block 2 is connected with an upper spring seat 6. The upper end of the dust cover 3 is fixedly sleeved on the buffer block 2 through interference fit. The lower end of the piston rod is provided with a lower spring seat 5, and two ends of the damping spring 1 are respectively connected with an upper spring seat 6 and the lower spring seat 5. Be the circumference equipartition on the lower terminal surface 3b of dust cover 3 and have a round buffering bump 3a, be the circumference and distribute, when dust cover 3 and lower spring holder 5 contact, the stress point is more even, is difficult for producing the skew. The buffering salient points 3a are semi-spherical, the spherical outer portions are smooth, edges and corners do not exist, friction is small, and abnormal sound is not easy to generate. Preferably, the lower end surface 3b is a slope gradually inclined outward from inside to outside. Increase the lateral rigidity of dust cover bottom, further avoid producing the abnormal sound.

The utility model discloses a buffering bump 3a forms and forms point-to-point contact with lower spring holder 5, avoids the bumper shock absorber at compression or resilience in-process, and the dust cover promotes the car quality with the condition that peripheral contact produced the friction abnormal sound, improves the comfort level of driving.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides an automobile shock absorber ware dust cover antifriction abnormal sound structure which characterized in that: including piston assembly (4), the piston rod of piston assembly (4) is equipped with dust cover (3) and damping spring (1) outward in proper order, dust cover (3) are the bellows form, and all leave the interval between damping spring (1), piston rod and dust cover (3), piston assembly (4) upper end is provided with buffer block (2), and buffer block (2) top is connected with spring holder (6), the fixed suit of interference fit is passed through on buffer block (2) in the upper end of dust cover (3), and spring holder (5) are installed down to the lower extreme of piston rod, and spring holder (6) and lower spring holder (5) are connected respectively to damping spring (1) both ends, are equipped with round buffering bump (3a) on lower terminal surface (3b) of dust cover (3), buffering bump (3a) are the hemisphere shape.

2. The anti-friction abnormal sound structure of the automobile shock absorber dust cover according to claim 1, characterized in that: the buffering salient points (3a) are circumferentially and uniformly distributed on the lower end surface (3 b).

3. The anti-friction abnormal sound structure of the dust cover of the automobile shock absorber according to claim 2, wherein: the lower end surface (3b) is an inclined surface which is gradually inclined outwards from inside to outside.