Gas spring with flexible telescoping range

Abstract

The invention relates to a gas spring which has the effects of flexible stroke and wide application. The invention discloses a gas spring with a flexible telescoping range. The gas spring comprises a cylinder body, wherein a piston rod is inserted in the cylinder body; the tail end of the piston rod is provided with a piston head which slides on the inner wall of the cylinder body in an attached manner; the cylinder body is filled with an inert gas or an oil-gas mixture; a second stroke hole is formed in the middle of the piston rod along the length of the piston rod; the piston rod is provided with a second stroke rod which slides along a sliding hole in an attached manner; a second piston which is in an interference fit with the second stroke hole is arranged at the tail end of the second stroke rod; the second stroke hole penetrates through the piston head and communicates with the inner cavity of the cylinder body; and the second stroke rod is detachably fixed to the piston rod. By virtue of the cooperation of the second stroke rod and the piston rod, the multistage change of the stroke of the gas spring is achieved; the flexibility of the stroke of the gas spring is improved; the gas spring of one type can be used in various environments; the production of the gas spring is simplified; and the production efficiency is improved.

Description

technical field [0001] The invention relates to a gas spring, more specifically, it relates to a gas spring with a flexible range of expansion and contraction. Background technique [0002] The gas spring is widely used. The working principle of the gas spring is to fill the airtight pressure cylinder with an inert gas or a mixture of oil and gas, so that the pressure in the cavity is many times higher than the atmospheric pressure, and the cross-sectional area of ​​the piston rod is smaller than that of the piston. The pressure difference generated by the area thus realizes the movement of the piston rod. [0003] The gas spring has a simple structure and reliable operation. When it is used to realize reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is stable. Therefore, it is widely used in various mechanical systems. The output force of the gas spring is proportional to the effective area of ​​the piston an...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the piston rod of the gas spring is generally a fixed straight rod, so the working stroke of the gas spring is constant and can only be adjusted slightly, resulting in limited application scenarios of the gas spring and the problem of a small application range of the gas spring

Images