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Air spring with continuously adjustable stiffness and air spring system with continuously adjustable stiffness

An air spring and stiffness technology, applied in the field of auto parts, can solve the problems of inconvenient layout, large space occupied by the air spring, affecting the design work of the whole vehicle, etc., and achieve the effect of simple structure, stable contact, and easy design and implementation.

Active Publication Date: 2020-04-10
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to realize the variable stiffness of the air spring, most of the current air springs choose to add an additional air chamber to the air spring, and the volume of the attached air chamber is mostly unchanged, but the air spring with the additional air chamber takes up a large space and is difficult to arrange. Very inconvenient, which will affect the design work of the whole vehicle

Method used

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  • Air spring with continuously adjustable stiffness and air spring system with continuously adjustable stiffness
  • Air spring with continuously adjustable stiffness and air spring system with continuously adjustable stiffness

Examples

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Effect test

Embodiment 1

[0033] This embodiment relates to an air spring with continuously adjustable stiffness, such as figure 1 As shown in , it includes a tubular casing 6, one end of the casing 6 is closed by a sealing cover 8, the other end of the casing 6 is connected with a base 13 via an air bag 7, and a connection with the casing 6 is also provided on the casing 6. The air port 4 connected internally. In this embodiment, an elastic diaphragm 9 is also provided in the housing 6, and the elastic diaphragm 9 separates the housing 6 into a first chamber 5 and a second chamber 1 located on both sides of the elastic diaphragm 9, and the aforementioned air port 4 is connected with The first chamber 5 communicates, and an oil port 2 communicating with the second chamber 1 is also provided on the housing 6 .

[0034] In this embodiment, the elastic diaphragm 9 can be made of rubber, and vulcanized and connected to the inner wall of the housing 6. In order to ensure the stability of the elastic diaphr...

Embodiment 2

[0039] This embodiment relates to an air spring system with continuously adjustable stiffness, which includes the air spring with continuously adjustable stiffness as described in Embodiment 1, and also includes an air source connected to the air port on the air spring, and connected to the oil port. A connected hydraulic source, and a controller that controls the operation of the above-mentioned air source and hydraulic source to fill and deflate the first chamber or inject and discharge oil into the second chamber. The controller can be the ECU of the car, the air source can be an air compressor or an air storage bottle installed on the car, and the hydraulic pressure source can also be a hydraulic pump or a hydraulic cylinder arranged on the car.

[0040]When the air spring system with continuously adjustable stiffness is in use, the controller can control the amount of oil injected from the hydraulic source to the second chamber according to the settings of different operat...

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Abstract

The invention provides an air spring with continuously adjustable rigidity. The air spring comprises a tubular housing, wherein one end of the housing is closed, and the other end of the housing is connected with a base through an air bag; an air port communicating with the interior of the housing is formed in the housing; an elastic diaphragm is arranged in the housing to divide the interior of the housing into a first cavity and a second cavity which are positioned on two sides of the elastic diaphragm respectively; the air port communicates with the first cavity; and an oil port communicating with the second cavity is further formed in the housing. The invention further provides an air spring system with continuously adjustable rigidity, which applies the air spring with continuously adjustable rigidity. According to the air spring with continuously adjustable rigidity, volume change of the second cavity can lead to volume change of the first cavity, so that the rigidity of the air spring can be changed. Besides, as the first cavity and the second cavity are formed in the housing, compared with an air spring adopting an additional air chamber, the air spring provided by the invention can solve the problems that a large space is occupied, and the design of the whole vehicle is influenced.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to an air spring with continuously adjustable stiffness. The invention also relates to a continuously adjustable stiffness air spring system using the continuously adjustable stiffness air spring. Background technique [0002] With the development of technology, people have higher requirements for the handling and comfort of the car. The stiffness of the coil spring used in the traditional passive suspension system is close to linear. Stiffness in the balance position, which can lead to poor handling of the car. In addition, the traditional passive suspension using coil springs is not adjustable in height, which also makes the passing performance of the car poor. The emergence of the air suspension system is a good solution to the above-mentioned defects of the traditional passive suspension system. [0003] The air suspension system uses the air spring as the elastic element ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/04F16F9/44
Inventor 王金珠封强杜阿雷张英富
Owner GREAT WALL MOTOR CO LTD
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