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Sealing structure of air spring

A sealing structure and air spring technology, which is applied in the direction of springs, spring/shock absorbers, gas shock absorbers, etc., can solve the problems of O-ring seal damage, air spring failure, etc., to improve sealing performance, increase deformation performance, The effect of avoiding damage

Pending Publication Date: 2021-12-21
隆昌山川机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to aim at the fact that the upper and lower sides of the current air spring are sealed by radial sealing, but during assembly and subsequent use, it may cause air leakage due to damage to the O-shaped sealing ring, and eventually cause the air spring to fail problem, an air spring sealing structure is provided to solve the above problem

Method used

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  • Sealing structure of air spring
  • Sealing structure of air spring
  • Sealing structure of air spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see Figure 1-3 , a sealing structure of an air spring, comprising an upper end cover 11, a capsule skin 14 and a piston seat 15, the capsule skin 14 is made of a mixed rubber material; one side of the capsule skin 14 is connected with the upper end cover 11, and the capsule skin 14 The other side is connected to the piston seat 15, so that the upper end cover 11, the capsule skin 14 and the piston seat 15 are connected as one, and the joint is guaranteed to be fully sealed. Preferably, the upper clamp is passed between the capsule skin 14 and the upper end cover 11 141 is fixed, and the bag skin 14 and the piston seat 15 are fixed by the lower buckle 142 .

[0032] The sealing at the piston seat 15 adopts a radial sealing method, which is specifically as follows: a sealing groove 151 is provided in the piston seat 15, and a sealing ring 152 is embedded in the sealing groove 151. Preferably, the sealing ring 152 adopts an O-shaped Sealing ring 152, when in use, because...

Embodiment 2

[0036] Embodiment 2 is a further description of Embodiment 1, and the same parts will not be repeated here, please refer to Figure 1-3 , the upper end cover 11 is provided with a mounting groove 112, preferably, the upper end cover 11 and the sealing plate 13 are made of cold-rolled steel plate material, and directly formed by stamping, that is, the mounting groove 112 is also formed by stamping, Stamping is lighter than the original steel casting; the first installation hole 111 is opened in the installation groove 112 , and the sealing sleeve 12 is arranged in the installation groove 112 .

[0037] When in use, the air spring will expand and contract, which will cause a certain deformation of the sealing sleeve 12, and the sealing sleeve 12 is arranged in the installation groove 112, which can effectively limit the deformation direction of the sealing sleeve 12, and prevent the sealing sleeve 12 from deviating from the shaft core, causing air Spring instability.

Embodiment 3

[0039] The third embodiment is a further description of the second embodiment, and the same parts will not be repeated here, please refer to Figure 1-3 , the sealing sleeve 12 is in the shape of a truncated cone, the lower end of the sealing sleeve 12 is close to the installation groove 112, and its connection point is sealed; preferably, the installation groove 112, the sealing sleeve 12 and the sealing plate 13 are formed into one by vulcanization, so To fully seal the role; the sealing sleeve 12 is set in a circular truncated shape, on the one hand to increase its deformation performance, on the other hand because the side of the sealing sleeve 12 is inclined to the axis, when the sealing sleeve 12 is deformed, it can also be effectively The direction of its deformation is limited to prevent the sealing sleeve 12 from deviating from the shaft core, resulting in instability of the air spring.

[0040] It should be noted here that the axes of the first installation hole 111 ...

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Abstract

The invention discloses a sealing structure of an air spring. The sealing structure comprises an upper end cover, other connecting pieces and other assemblies, a first mounting hole is formed in the upper end cover, a sealing sleeve is arranged above the first mounting hole, a second mounting hole is formed in the sealing sleeve, a sealing plate is arranged below the second mounting hole, and a third mounting hole is formed in the sealing plate. The other connecting pieces sequentially penetrate through the first mounting hole, the second mounting hole and the third mounting hole and then are connected with the other assemblies, the other connecting pieces are tightly attached to the sealing plate, the other assemblies are tightly attached to the sealing sleeve, and end face sealing is formed among the other connecting pieces, the sealing plate, the sealing sleeve and the other assemblies. Compared with radial sealing, the end face sealing adopted in the sealing structure is not provided with a sealing ring, so that the sealing ring can be prevented from being damaged, the sealing performance is improved, the structure is simple, and the installation is convenient.

Description

technical field [0001] The invention relates to the technical field of air spring sealing, in particular to an air spring sealing structure. Background technique [0002] The air spring is also called the air bag, which is one of the key parts of the automobile suspension. The air spring uses air as the elastic medium, that is, puts compressed air in a closed container (the air pressure is 0.5 ~ 1Mpa), and uses the compression elasticity of the gas to realize the spring. role. As the load increases, the compressed air pressure in the container increases, and its stiffness increases; when the load decreases, the stiffness also decreases with the decrease of air pressure. Therefore, this kind of spring has better variable stiffness characteristics; how to reliably seal and ensure the normal operation of the air spring is extremely critical; the current air spring is sealed by radial sealing from top to bottom, that is, on the upper end cover and the piston. Sealing grooves a...

Claims

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Application Information

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IPC IPC(8): F16F9/04F16F9/32F16F9/36F16F9/54
CPCF16F9/0418F16F9/0436F16F9/0454F16F9/0227F16F9/0218F16F9/0281F16F9/3207F16F9/369F16F9/362F16F9/368F16F9/54
Inventor 杨仁昆
Owner 隆昌山川机械有限责任公司