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Adjustable air spring

A gas spring, adjustable technology, used in springs, springs/shock absorbers, gas shock absorbers, etc., can solve problems such as changes in the working performance of gas springs

Active Publication Date: 2021-01-12
DONGFENG MOTOR CORP HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to overcome the deficiencies of the prior art, and provide a gas spring to solve the problem of the gas or oil-gas mixture in the pressure cylinder in the prior art that expands with heat and contracts with cold. technical problem

Method used

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  • Adjustable air spring
  • Adjustable air spring
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] An adjustable gas spring such as figure 1 and figure 2 As shown, it includes: cylinder 1, piston 2, piston rod 3 and sleeve 4, cylinder 1 is provided with a closed cavity, and the closed cavity is filled with high-pressure inert gas or hydraulic oil or oil-gas mixture as a medium, the cylinder The airtight cavity in the body 1 is cylindrical or square column-shaped, and of course it can also be the shape of the inner cavity of other cylinders. One end of the cylinder body 1 is provided with a first opening 11 communicating with the airtight cavity. The external shape of the piston 2 is adapted to the closed cavity, and the piston 2 is arranged in the closed cavity and is connected with the cylinder body 1 in a sliding seal, so that the piston 2 separates the closed cavity into a first chamber 12 and a second chamber 13. The first chamber 12 communicates with the second chamber 13 through a connection hole, which is a small damping hole, so that the gas between the fir...

Embodiment 2

[0043] In this example, if Figure 4 As shown, the purpose of detachable connection can also be achieved by rotating the buckle between the sleeve 4 and the piston 2, such as image 3 As shown, a chuck 72 is provided on the outer wall of the sleeve 4, an L-shaped fastening groove 71 is provided on the inner wall of the first groove 21, and one end of the L-shaped fastening groove 71 communicates with the edge of the first groove 21, The chuck 72 is fixed in the L-shaped fastening groove 71 by rotating and fastening, so that the sleeve 4 and the piston 2 are fixedly connected together. There are one or more chucks 72 , the number of L-shaped fastening grooves 71 is the same as the number of chucks 72 , and each L-shaped fastening groove 71 corresponds to one chuck 72 . It is easy to think that the L-shaped fastening groove 71 can also be replaced by an annular fastening groove. The annular fastening groove is composed of an annular groove and a connecting groove. The connectin...

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Abstract

The invention relates to an adjustable air spring and belongs to the technical field of air springs. The adjustable air spring comprises a cylinder body, a piston 2, a piston rod 3 and a sleeve 4. A closed cavity is formed in the cylinder body. A first opening communicating with the closed cavity is formed in one end of the cylinder body. The piston is arranged in the closed cavity and connected with the cylinder body in a sliding and sealing manner. The piston partitions the closed cavity into a first cavity and a second cavity. The first cavity communicates with the second cavity through a connecting hole. One end of the piston rod is connected with the piston. The other end of the piston rod penetrates through the first opening. The sleeve is arranged outside the piston rod and connected with the piston rod in a sliding and sealing manner. One end of the sleeve is detachably connected with the piston. The other end penetrates through the first opening and is in sliding and sealing connection with the first opening. The sleeve is connected with or separated from the piston, thus the stress area of the piston end face of the cavity where the sleeve is located can be changed, and thus magnitude of output force of the piston rod is changed.

Description

technical field [0001] The invention belongs to the technical field of gas springs, in particular to an adjustable gas spring. Background technique [0002] Gas spring is an industrial accessory that can support, buffer, brake, height adjust and angle adjust. Several times or dozens of times of that, the movement of the piston rod is realized by using the pressure difference generated by the cross-sectional area of ​​the piston rod being smaller than that of the piston. Most of the car trunk doors use gas springs as boosting and buffering devices. [0003] However, due to changes in geographical location and seasons, or changes in ambient temperature, the gas or oil-gas mixture in the pressure cylinder will undergo changes in thermal expansion and contraction, which will affect the working performance of the gas spring. When the external temperature drops, the output of the gas spring will The force will decrease, making it difficult to open the trunk door, and when the ou...

Claims

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Application Information

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IPC IPC(8): F16F9/02F16F9/36F16F9/32
CPCF16F9/0227F16F9/0281F16F9/36F16F9/368F16F9/3221F16F9/3214F16F9/3207
Inventor 王朝锐胡占芳郑敏桂敏蒋玲珑
Owner DONGFENG MOTOR CORP HUBEI