A spring air pressure damping shock absorber

Abstract

The invention discloses a spring air pressure damping shock absorber and belongs to the field of shock absorbers. The shock absorber comprises an outer pipe, an inner pipe and a piston rod, the inner pipe is arranged inside the outer pipe, the end, located inside the outer pipe, of the inner pipe is provided with an inner pipe piston, and the inner piston cooperates with the inner wall of the outer pipe for forming a sealed cavity A; one end of the piston rod is fixed at the end of the outer pipe, the other end of the piston rod passes through the inner pipe piston and extends into the sealed inner pipe, a damping piston matched with the inner wall of the inner pipe is arranged at the other end of the piston rod, and the inner pipe is divided into a cavity B and a cavity C through the damping piston; the cavity A, the cavity B and the cavity C are all filled with gas, a damping spring is arranged inside the cavity A or the cavity C, and the load born by the damping spring is from one thirds to a half of that born by the shock absorber. According to the shock absorber, by utilizing the elastic force of the damping spring, the problem that the air pressure damping is insufficient in rebound resilience is improved, the damping spring and the air damping are combined organically, the rebound resilience of the shock absorber is made to be moderate, the balance between hardness and softness of the shock abosrber is achieved, and therefore the shock absorption effect is improved.

Description

technical field [0001] The present invention relates to a kind of shock absorber, relate to a kind of spring air pressure damping shock absorber more specifically, can be used for the front and rear shock absorption of bicycle, electric vehicle (including two-wheel, three-wheel, four-wheel) and motorcycle use. Background technique [0002] The shock absorber installed on the motorcycle can alleviate and attenuate the impact and vibration of the motorcycle due to the unevenness of the road during driving, ensure the smoothness and comfort of driving, and help improve the service life of the motorcycle and the stability of the operation sex. Existing motorcycle shock absorbers can be roughly divided into spring shock absorbers, spring-air damping shock absorbers, hydraulic damping shock absorbers, and oil-air combined front fork shock absorbers according to the working medium. and nitrogen-filled hydraulic shock absorbers, etc. [0003] The existing spring-type shock absorb...

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Problems solved by technology

[0005] The object of the present invention is to overcome the above-mentioned deficiencies of the existing shock absorbers, and provide a spring air pressure damping shock absorber. By adopting the technical solution of the present invention, the elastic force of the damping spring is used to improve the problem of insufficient resilience of the air pressure damping, and the damping spring and The gas damping is organically combined. When the shock absorber is pressed down, the damping spring can assist the air pressure damping to provide shock absorption, increase the load of the shock absorber, and overcome the softness of the air pressure damping shock absorber. When the shock absorber rebounds, The damping spring promotes the rebound of the shock absorber, which improves the problem of poor air pressure damping resilience, and under the action of air pressure damping force, the damping spring is softer, which eliminates the self-vibration phenomenon of the spring and makes the shock absorber moderate in resilience , to achieve the soft and hard balance of the shock absorber, thereby improving the shock absorption effect

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