CN216666327U

CN216666327U - Noise reduction type air spring

Info

Publication number: CN216666327U
Application number: CN202123406237.4U
Authority: CN
Inventors: 王冕; 朱名江
Original assignee: Zhejiang Kong Hui Automobile Technology Co ltd
Current assignee: Zhejiang Kong Hui Automobile Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-03
Anticipated expiration: 2031-12-30

Abstract

The utility model provides a noise reduction type air spring which comprises an upper top cover, a clamp spring, a top rubber assembly, a top seat assembly, an aluminum protective cylinder, a bag skin, a piston, a dust cover, a shock absorber body and a shock absorber tray, wherein the clamp spring is arranged on the upper top cover; the top rubber assembly is arranged in the top seat assembly and is compressed through the upper top cover, one end of the bag skin is in lap joint with the top seat assembly, the other end of the bag skin is in lap joint with one end of the piston, the other end of the piston is sleeved in the dust cover and is in contact with the shock absorber tray, and the shock absorber tray is welded with the shock absorber body; one end of the aluminum protective cylinder is in lap joint with the capsule skin, the other end of the aluminum protective cylinder is in lap joint with one end of the dust cover, and the other end of the dust cover is in lap joint with the shock absorber tray; and a damping plate assembly for reducing noise is fixedly arranged in the top seat assembly through the elastic check ring for the hole and the elastic check ring for the shaft. According to the utility model, the damping plate assembly is fixedly arranged in the top seat assembly, so that the isolation performance of the air spring on high-frequency vibration noise is improved.

Description

Noise reduction type air spring

Technical Field

The utility model relates to the technical field of air springs, in particular to a noise reduction type air spring.

Background

With the development of the times, automobiles nowadays have increasingly high demands on weight reduction, driving comfort and noise reduction in addition to the conventional objectives such as function, driving safety, strength and durability. The air suspension can perfectly meet the requirements, and the air suspension is mainly different from the suspension of a common vehicle in that the air suspension replaces a spring with an air spring, and an electric control device is added for controlling the air spring.

The automobile is at the actual driving in-process, and the road conditions that involve are complicated, and the noise that brings by wheel high-frequency vibration can influence driving experience very much, consequently will make better design to the air spring, reduces the noise that complicated road conditions brought, satisfies actual requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a noise reduction type air spring to solve the problem that the noise reduction of the existing air spring is not obvious.

In order to realize the purpose, the utility model adopts the following specific technical scheme:

the utility model provides a noise reduction type air spring which comprises an upper top cover, a clamp spring, a top rubber assembly, a top seat assembly, an aluminum protective cylinder, a bag skin, a piston, a dust cover, a shock absorber body and a shock absorber tray, wherein the clamp spring is arranged on the upper top cover; the top rubber assembly is installed in the top seat assembly and is pressed tightly through the upper top cover, one end of the bag skin is in lap joint with the top seat assembly, the other end of the bag skin is in lap joint with one end of the piston, the other end of the piston is sleeved in the dust cover and is in contact with the shock absorber tray, and the shock absorber tray is welded with the shock absorber body; one end of the aluminum protective cylinder is in lap joint with the capsule skin, the other end of the aluminum protective cylinder is in lap joint with one end of the dust cover, and the other end of the dust cover is in lap joint with the shock absorber tray; and a damping plate assembly for reducing noise is fixedly arranged in the top seat assembly through the elastic check ring for the hole and the elastic check ring for the shaft.

Preferably, the damping plate assembly comprises a damping plate outer framework, damping plate rubber, a damping plate body and a damping plate inner framework, the damping plate outer framework, the damping plate body and the damping plate inner framework are respectively bonded with the damping plate rubber, the damping plate outer framework and the damping plate inner framework are respectively abutted against the top seat assembly, and the damping plate body is provided with an air vent.

Preferably, a groove is reserved on the vibration damper tray, and an O-ring is embedded in the groove to seal the vibration damper tray and the piston.

Preferably, the top cover compresses tightly the top rubber assembly in the top seat assembly through the clamp spring, and the top rubber assembly is sealed with the top seat assembly through a sealing ring.

Preferably, a buffer block is further mounted on the top seat assembly.

Preferably, one end of the capsule skin is buckled and pressed with the top seat assembly through the upper seat buckling and pressing ring, and the other end of the capsule skin is buckled and pressed with the piston through the piston buckling and pressing ring.

Preferably, one end of the aluminum protective cylinder is buckled and pressed with the capsule shell through an aluminum protective cylinder buckling ring, and the other end of the aluminum protective cylinder is connected with one end of the dust cover through a hoop.

The utility model can obtain the following technical effects:

the damping plate assembly is fixedly arranged in the top seat assembly, so that the isolation performance of the air spring to high-frequency vibration noise is improved.

Drawings

FIG. 1 is a schematic view of a noise reducing air spring according to an embodiment of the present invention;

fig. 2 is a partially enlarged schematic view of fig. 1.

The reference numerals include: the shock absorber comprises an upper top cover 1, a clamp spring 2, a top seat assembly 3, a top rubber assembly 4, a bag skin 5, an aluminum protective cylinder 6, a piston 7, a dust cover 8, a shock absorber tray 9, a shock absorber body 10, a buffer block 11, an O-shaped ring 12, a sealing ring 13, a top seat buckling and pressing ring 14, a piston buckling and pressing ring 15, an aluminum protective cylinder buckling and pressing ring 16, a hoop 17, a damping plate assembly 18, a damping plate outer framework 181, damping plate rubber 182, a damping plate body 183, a damping plate inner framework 184, an air vent 185, a hole elastic check ring 19 and a shaft elastic check ring 20.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.

The noise reduction type air spring provided by the utility model is explained in detail by specific embodiments.

FIG. 1 illustrates a noise reducing air spring configuration according to an embodiment of the present invention.

As shown in fig. 1, a noise reduction type air spring according to an embodiment of the present invention includes: the shock absorber comprises an upper top cover 1, a clamp spring 2, a top seat assembly 3, a top rubber assembly 4, a capsule skin 5, an aluminum protective cylinder 6, a piston 7, a dust cover 8, a shock absorber tray 9, a shock absorber body 10 and a buffer block 11.

The top rubber assembly 4 is installed in the footstock assembly 3 and is contacted with the upper top cover 1, the upper top cover 1 is installed at the top of the top rubber assembly 4, the top rubber assembly 4 is pressed tightly in the footstock assembly 3 through the clamp spring 2, and the top rubber assembly 4 is sealed with the footstock assembly 3 through the sealing ring 13.

One end of the capsule skin 5 is buckled and pressed with the top seat assembly 4 through the upper seat buckling and pressing ring 14, the other end of the capsule skin 5 is lapped with one end of the piston 7 through the piston buckling and pressing ring 15, the other end of the piston 7 is sleeved in the dust cover 8 to be contacted with the shock absorber tray 9, and the shock absorber tray 9 is welded with the shock absorber body 10; one end of the aluminum protective cylinder 6 is in lap joint with the capsule shell 5 through an aluminum protective cylinder buckling ring 16, the other end of the aluminum protective cylinder 6 is in lap joint with one end of the dust cover 8 through a hoop 17, and the other end of the dust cover 8 is in lap joint with the shock absorber tray 9.

Grooves (two are shown in fig. 1) are reserved in the damper tray 9, and an O-ring 12 is inserted into each groove to seal between the damper tray 9 and the piston 7.

The buffer block 11 and the top seat assembly 3 are installed and sleeved on the shock absorber body 10 to play a role in buffering.

A damper plate assembly 18 is fixedly mounted in the head seat assembly via a circlip 19 for hole and a circlip 20 for shaft, and the damper plate assembly 18 is used for reducing noise in the vehicle.

Fig. 2 shows a partial enlargement at a in fig. 1.

As shown in fig. 2, the damping plate assembly 18 includes a damping plate outer frame 181, a damping plate rubber 182, a damping plate body 183 and a damping plate inner frame 184, the damping plate outer frame 181, the damping plate body 183 and the damping plate inner frame 184 are bonded together by the damping plate rubber 182 to form the damping plate assembly 18, the damping plate outer frame 181 and the damping plate inner frame 184 are respectively abutted to the top seat assembly 3, the damping plate rubber 182 can allow the damping plate body 183 to have relative play between the damping plate outer frame 181 and the damping plate inner frame 164, the damping plate body 183 is provided with a vent hole 185, a damping effect is achieved by the vent hole 185 and the damping plate rubber 182, and a noise reduction purpose is achieved.

In one example of the present invention, the damping plate outer frame 181 and the damping plate inner frame 184 are metal frames. Of course, the damping plate outer frame 181 and the damping plate inner frame 184 may be made of other materials satisfying a certain rigidity.

The top seat assembly 3 is connected with a vehicle body, and for the air spring, the vector sum of the pressure of internal gas on the top seat assembly 3, the tensile force of the bag skin 5 and the force brought by the shock absorber body 10 is the force on the vehicle body. When the wheel encounters high frequency vibrations, the forces transmitted by the shock absorber body 10 can dampen the high frequency vibrations through the apex assembly 4 to which it is attached. Meanwhile, the air spring is internally provided with air pressure which is continuously changed along with the continuous vibration of the piston 7, partial high-frequency waves are filtered out through the vent holes 185 on the damping plate body 183, the sound waves are reduced and transmitted to the vehicle body through the top seat assembly 3, and the noise in the vehicle is reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A noise reduction type air spring is characterized by comprising an upper top cover, a clamp spring, a top rubber assembly, a top seat assembly, an aluminum protective cylinder, a bag skin, a piston, a dust cover, a shock absorber body and a shock absorber tray; the top rubber assembly is arranged in the top seat assembly and is pressed tightly through the upper top cover, one end of the bag skin is in lap joint with the top seat assembly, the other end of the bag skin is in lap joint with one end of the piston, the other end of the piston is sleeved in the dust cover and is in contact with the shock absorber tray, and the shock absorber tray is welded with the shock absorber body; one end of the aluminum protective cylinder is in lap joint with the capsule skin, the other end of the aluminum protective cylinder is in lap joint with one end of the dust cover, and the other end of the dust cover is in lap joint with the shock absorber tray; and a damping plate assembly for reducing noise is fixedly arranged in the top seat assembly through the elastic check ring for the hole and the elastic check ring for the shaft.

2. The noise reduction type air spring according to claim 1, wherein the damping plate assembly comprises a damping plate outer frame, a damping plate rubber, a damping plate body and a damping plate inner frame, the damping plate outer frame, the damping plate body and the damping plate inner frame are respectively bonded with the damping plate rubber, the damping plate outer frame and the damping plate inner frame are respectively abutted against the top seat assembly, and the damping plate body is provided with a vent hole.

3. The noise reducing air spring according to claim 1 or 2, wherein a groove is reserved in the damper disc, and an O-ring is embedded in the groove to seal between the damper disc and the piston.

4. The noise reduction air spring according to claim 1 or 2, wherein the top cover compresses the top rubber assembly in the top seat assembly through a clamp spring, and the top rubber assembly and the top seat assembly are sealed through a sealing ring.

5. The noise reducing air spring of claim 1 or 2, further comprising a bumper mounted to said top mount assembly.

6. The noise reduction type air spring according to claim 1 or 2, wherein one end of the bag skin is buckled with the top seat assembly through an upper seat buckling ring, and the other end of the bag skin is buckled with the piston through a piston buckling ring.

7. The noise reduction air spring according to claim 1 or 2, wherein one end of the aluminum casing is fastened and pressed with the bag skin through an aluminum casing fastening ring, and the other end of the aluminum casing is connected with one end of the dust cover through a hoop.