Variable-diameter columnar type gas pressure spring

Abstract

The invention relates to a variable-diameter columnar type gas pressure spring. The existing gas pressure spring has the characteristics of complex structure, insufficient deformation route and bad ventilating effect. The variable-diameter columnar type gas pressure spring comprises a spring body; the spring body is at least formed by a hollow cavity body, the side wall of the cavity body is multilayered structure, and a sealed cavity chamber for holding the pressure gas is formed between side walls at every two layers; said cavity body is in the shape of variable-diameter column having two thick ends and a fine middle part, every cavity chamber is provided with a venting hole; the spring is hollow and has good vertically ventilating ability; the gas charge amount of the cavity chamber is adjusted in real time by the gas charge or exhaust of a venting hole, so as to adjust the softness and hardness (elasticity) of the gas pressure spring and increase the comfort level and the applicable scope; gas pressure spring has small occupied space after pressure in the cavity chamber is removed and the air is compressed, can be packaged, and is convenient for package, storage and transportation; cavity pillars can be single bodies or shaped in rows or lines; the cavity chamber of each cavity pillar can be independent or communicated with each other.

Description

technical field [0001] The invention relates to the technical field of spring manufacturing, in particular to a variable-diameter cylindrical gas spring. Background technique [0002] "Spring" can be divided into compression spring, torsion spring and tension spring in terms of function. The commonly used compression spring is made of steel wire and other elastic metal wires in a spiral shape, and its elastic deformation is used to generate elastic force. The elastic force of this type of compression spring is not adjustable after it is formed, and it still occupies a large space after being compressed. After being used in places such as spring mattresses, it cannot guarantee that each area of ​​use has a satisfactory degree of comfort. Although someone has designed a gas spring, it is composed of a cylinder, a piston (push rod), an additional built-in spring, etc., and has a complex structure and high requirements for cooperation between parts, especially the pistons are ar...

AI Technical Summary

Problems solved by technology

The elastic force of this type of compression spring is not adjustable after it is formed, and it still occupies a large space after being compressed. After being used in places such as spring mattresses, it cannot guarantee that each area of ​​use will have a satisfactory degree of comfort.

Although someone has designed a gas spring, it is composed of a cylinder, a piston (push rod), an additional built-in spring, etc., and has a complex structure and high requirements for cooperation between parts, especially the pistons are arranged at the upper and lower ends of a flexible cylindrical cylinder. A cavity is formed in the middle to achieve the spring effect, but it has the disadvantage of not being ventilated up and down. When it is used as a mattress compression spring, the moisture generated by the human body or in the environment will accumulate on the surface of the mattress and cannot be removed through air convection. Sleeping on a damp air spring mattress will inevitably affect your health; in addition, the above-mentioned gas spring has insufficient deformation stroke, a small range of softness and hardness adjustment, and still occupies a large space when it is not in use, and the production process of the parts is complicated and the cost is high.

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