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Low-noise air spring

A gas spring and low-noise technology, applied in the field of low-noise gas springs, can solve problems such as high noise, achieve the effects of reducing noise, reducing costs, and ensuring coaxiality

Inactive Publication Date: 2016-06-22
CHANGZHOU GAS SPRING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to overcome the shortage of large noise when the gas spring moves or resets in the prior art, the present invention provides a low-noise gas spring

Method used

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Embodiment Construction

[0019] The present invention will be described in detail in conjunction with accompanying drawing now. This figure is a simplified schematic diagram only illustrating the basic structure of the present invention in a schematic manner, so it only shows the components relevant to the present invention.

[0020] like Figure 1-4 As shown, a low-noise gas spring of the present invention includes a cylinder 1 and a piston rod 2, and one end of the piston rod 2 placed inside the cylinder 1 is provided with a piston 3, and the piston 3 connects the cylinder 1 Divided into a rod cavity 4 and a rodless cavity 5, the rod cavity 4 is provided with a guide sleeve 6, a lip ring 7 and a plastic touch ring 8 in sequence from the bottom to the piston 3, and the piston rod 2 is far away from the One end of the piston 3 extends to the outside of the cylinder 1 through the plastic touch ring 8 , the lip ring 7 and the guide sleeve 6 in sequence, and the plastic touch ring 8 is in interference f...

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Abstract

The invention provides a low-noise air spring. The low-noise air spring comprises a cylinder barrel and a piston rod; a piston is arranged at one end, positioned in the cylinder barrel, of the piston rod; the cylinder barrel is divided into a rod cavity and a rodless cavity by the piston; a guide sleeve, a lip-shaped ring and a plastic collision ring are arranged in the rod cavity from the bottom to the piston in sequence; one end, far from the piston, of the piston rod penetrates through the plastic collision ring, the lip-shaped ring and the guide sleeve in sequence to extend out of the cylinder barrel; and the plastic collision ring is in interference fit with the inner wall of the cylinder barrel. The low-noise air spring, provided by the invention, adopts the plastic collision ring to replace a steel part, and adopts the interference fit to reduce the noise caused by collision with the plastic collision ring in the return and operation process of the air spring; the plastic collision ring has a certain guide effect on axial movement of the piston rod to guarantee the coaxiality between the piston rod and the cylinder barrel; and the effective travel of the air spring can be changed through changing the length of the plastic collision ring to satisfy different client demands.

Description

technical field [0001] The invention relates to the technical field of gas springs, in particular to a low-noise gas spring. Background technique [0002] In the prior art, steel parts are used as the anti-collision structure on the piston rod of the gas spring, and the steel parts are sheathed on the piston rod. Since both the steel part and the cylinder are of rigid structure, transition or interference fit cannot be used for installation, and the outer diameter of the steel part must be smaller than the inner diameter of the cylinder to fit the steel part into the cylinder. Since there is a certain difference between the outer diameter of the steel part and the inner diameter of the cylinder, there is a gap between the steel part and the cylinder. During the back and forth movement of the piston rod, the steel part and the cylinder are not fixedly connected, and the steel part, the piston rod and the steel part In addition, when the gas spring resets, the piston rod stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/02F16F9/32
CPCF16F9/02F16F9/3207
Inventor 余卫忠刘淑勉岳如霞施萍华
Owner CHANGZHOU GAS SPRING
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