CN219277177U

CN219277177U - Acoustic bag of low-noise air suspension air supply unit

Info

Publication number: CN219277177U
Application number: CN202320129299.5U
Authority: CN
Inventors: 杨娟; 葛坚; 任洁雨; 邢伟峰
Original assignee: Americo Shanghai Automotive Technology Co ltd; Amerco Anhui Automobile Electric Drive Co ltd
Current assignee: Americo Shanghai Automotive Technology Co ltd; Amerco Anhui Automobile Electric Drive Co ltd
Priority date: 2023-01-13
Filing date: 2023-01-13
Publication date: 2023-06-30
Anticipated expiration: 2033-01-13

Abstract

The utility model discloses an acoustic bag of a low-noise air suspension air supply unit, which relates to the technical field of automobile air suspension systems, and comprises an air compressor assembly and a sheet metal bracket; the vibration damping unit is arranged on the air compressor assembly, the vibration damping unit is used for buffering vibration generated during the operation of the air compressor assembly, one side of the vibration damping unit is connected with the sheet metal support, the acoustic bag of the low-noise air suspension air supply unit is provided, the foaming height of the acoustic bag is lower than that of the upper shell, then the foaming height of the acoustic bag is higher than that of the lower shell, the upper and lower foaming are in interference fit, the sound absorption effect of the structure on the foaming and the sound insulation effect of the shell are better, in addition, the foaming structure is formed along with standard components such as an air compressor, and the like, so that under a certain space, the equivalent thickness is increased, the better sound absorption effect is also achieved, and the NVH performance is improved.

Description

Acoustic bag of low-noise air suspension air supply unit

Technical Field

The utility model relates to the technical field of automobile air suspension systems, in particular to an acoustic bag of a low-noise air suspension air supply unit.

Background

The air supply unit of the air suspension is arranged by installing an air compressor (namely an inflating pump) in a metal or plastic shell (generally called an acoustic bag) through a vibration reduction unit (generally called primary vibration reduction), and connecting the shell with a vehicle body through another vibration reduction unit (generally called secondary vibration reduction), wherein the primary vibration reduction unit and the secondary vibration reduction unit mainly serve to isolate vibration of the air compressor during operation.

In general, some of the foaming inside the acoustic pack wraps the air compressor, and the upper and lower cases are identical in height to each other, resulting in a gap between a part of the foaming and the air compressor, resulting in a decrease in the ability of the foaming and the insulation of the case to sound and vibration, and the NVH (english abbreviation for noise, vibration and harshness) performance of the existing air compressor apparatus is to be improved.

Disclosure of Invention

In order to solve the technical problems in the background technology, the utility model provides an acoustic bag of a low-noise air suspension air supply unit.

The utility model provides an acoustic bag of a low-noise air suspension air supply unit, which comprises an air compressor assembly and a sheet metal bracket, wherein the sheet metal bracket is arranged on the air compressor assembly;

the air compressor assembly is provided with a vibration reduction unit, the vibration reduction unit is used for buffering vibration generated when the air compressor assembly works, and one side of the vibration reduction unit is connected with the sheet metal bracket.

Preferably, the vibration reduction unit comprises an acoustic enclosure and a foam, wherein the foam is arranged on the inner wall of the acoustic enclosure, and the foam is used for absorbing noise of the air compressor.

Preferably, the number of the acoustic packet shells and the number of the foaming are two, the two acoustic packet shells are respectively located at two sides of the air compressor assembly, one acoustic packet shell far away from the sheet metal support is lower than the foaming in the acoustic packet shells, the other acoustic packet shell close to the sheet metal support is higher than the foaming in the acoustic packet shells, and the two acoustic packet shells are in interference fit connection.

Preferably, the foamed structure follows the shape of the air compressor assembly and acoustic enclosure.

Preferably, one of the acoustic enclosure is fastened and connected with the sheet metal bracket through a bolt.

In the utility model, the acoustic bag of the low-noise air suspension air supply unit is provided, the height of the upper foaming on the acoustic bag is lower than that of the upper shell, then the lower foaming is higher than that of the lower shell, the upper foaming and the lower foaming are in interference fit, the structure has better sound absorption effect on the foaming and the sound insulation effect on the shell, and in addition, the foaming structure is shaped along with standard components such as an air compressor, and the like, so that under a certain space, the equivalent thickness is increased, and the better sound absorption effect is also achieved, thereby improving the NVH performance.

Additional aspects and advantages of the utility model 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 utility model.

Drawings

FIG. 1 is a front view of the structure of the present utility model;

fig. 2 is an exploded view of the structure of the present utility model.

In the figure, 1, a sheet metal bracket; 2. an air compressor assembly; 3. a vibration damping unit; 31. an acoustic enclosure; 32. foaming.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

It is to be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like are directional or positional relationships as indicated based on the drawings, merely to facilitate describing the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

1-2, an acoustic bag of a low-noise air suspension air supply unit comprises an air compressor assembly 2 and a sheet metal bracket 1;

the air compressor assembly 2 is provided with a vibration reduction unit 3, the vibration reduction unit 3 is used for buffering vibration generated during the operation of the air compressor assembly 2, and one side of the vibration reduction unit 3 is connected with the sheet metal bracket 1.

The vibration reduction unit 3 comprises an acoustic enclosure 31 and a foaming 32, the foaming 32 is arranged on the inner wall of the acoustic enclosure 31, the foaming 32 is used for absorbing noise of an air compressor, the number of the acoustic enclosures 31 and the number of the foaming 32 are two, the two acoustic enclosures 31 are respectively located on two sides of the air compressor assembly 2, one acoustic enclosure 31 far away from the sheet metal bracket 1 is lower than the foaming 32 in the acoustic enclosure 31, the other acoustic enclosure 31 close to the sheet metal bracket 1 is higher than the foaming 32 in the acoustic enclosure 32, the two foaming 32 are connected in an interference fit mode, the structure of the foaming 32 is matched with the inner wall of the acoustic enclosure 31 along with the shape of the air compressor assembly 2 and the acoustic enclosure 31, the structure of the foaming 32 is matched with the periphery of the air compressor assembly 2, and one acoustic enclosure 31 is fixedly connected with the sheet metal bracket 1 through bolts.

The vibration damping unit 3 includes a vibration damping mechanism of the existing air compressor assembly 2 that can achieve vibration damping.

The low noise air suspension air supply unit acoustic package provided is characterized in that the height of the upper foaming 32 is lower than that of the upper shell, then the height of the lower foaming 32 is higher than that of the lower shell, the upper foaming 32 and the lower foaming 32 are assembled in an interference mode, the sound absorption effect of the foaming 32 and the sound insulation effect of the shell are better, in addition, the foaming 32 is formed along with standard components such as an air compressor, and the like, so that the equivalent thickness is increased under a certain space, and the better sound absorption effect is also achieved, and the NVH performance is improved.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The low-noise air suspension air supply unit acoustic bag comprises an air compressor assembly (2), and is characterized by further comprising a sheet metal bracket (1);

the air compressor assembly (2) is provided with a vibration reduction unit (3), the vibration reduction unit (3) is used for buffering vibration generated when the air compressor assembly (2) works, and one side of the vibration reduction unit (3) is connected with the metal plate bracket (1).

2. The low noise air suspension air supply unit acoustic bag according to claim 1, characterized in that the vibration damping unit (3) comprises an acoustic bag housing (31) and a foam (32), the foam (32) is mounted on the inner wall of the acoustic bag housing (31), and the foam (32) is used for absorbing air compressor noise.

3. The low noise air suspension air supply unit acoustic bag according to claim 2, wherein the number of the acoustic bag shells (31) and the number of the foaming (32) are two, the two acoustic bag shells (31) are respectively positioned at two sides of the air compressor assembly (2), one acoustic bag shell (31) far away from the sheet metal bracket (1) is lower than the foaming (32) in the acoustic bag shell, the other acoustic bag shell (31) near to the sheet metal bracket (1) is higher than the foaming (32) in the acoustic bag shell, and the two foaming (32) are in interference fit connection.

4. The low noise air suspension air supply unit acoustic bag of claim 2 wherein the foam (32) structure follows the shape of the air compressor assembly (2) and acoustic bag housing (31).

5. The low noise air suspension air supply unit acoustic bag according to claim 2, wherein one of the acoustic bag housings (31) is fastened to the sheet metal bracket (1) by bolts.