Damper damping mechanism and hydraulic-pneumatic combined damping damper applied same

Abstract

The invention discloses a damper damping mechanism and a hydraulic-pneumatic combined damping damper applied same, and belongs to the field of dampers. The damper damping mechanism is characterized inthat in a downward pressing moment, part of the damping medium flows from a small hole to a large hole to generate downward-pressure damping, the part of the damping medium flows through a gap between a damping piston and a handle pipe, the part of the damping medium flows into the large hole through a sawtooth notch through a groove of the outer side wall of a piston ring, and the problem that the shock feeling is generated instantly when the damper is pressed down is effectively solved; and in the rebound process, a piston seal ring expands outwards to seal the gap between the damping piston and the handle pipe, the rebound damping effect is improved, especially in a road condition continuous bumpy environment, the motion stroke of the damper is long, in addition, the reciprocating motion of higher frequency is needed, and the damping effect is more prominent. According to the damper damping mechanism and the hydraulic-pneumatic combined damping damper applied the same, a sealing air pressure cavity is formed by guiding and sealing between a handle pipe and a sleeve pipe, so that the lower pressure collision bottom of the damper is prevented, and the hydraulic-pneumatic combineddamping effect is achieved.

Description

technical field [0001] The invention relates to a damping mechanism and a shock absorber, more specifically, to a damping mechanism of a shock absorber and a hydraulic-air pressure combined damping shock absorber using the damping mechanism. Background technique [0002] At present, shock absorbers are widely used, and are generally used in the shock-absorbing structures of motorcycles, tricycles, automobiles and other vehicles, as well as in other fields that require shock absorption, to reduce shock and vibration. There are many types of shock absorbers, which can be roughly divided into spring shock absorbers, spring-air damping shock absorbers, hydraulic damping shock absorbers, oil-air combined front fork shock absorbers and nitrogen-filled hydraulic shock absorbers. shock absorbers etc. The existing spring-type shock absorber can withstand a large load, but there is a phenomenon of self-vibration, which easily transmits low-frequency vibrations and affects comfort; th...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of the damping structure of the existing shock absorber, such as strong downward impact feeling and poor rebound damping effect, and provide a shock absorber damping mechanism and a hydraulic-pneumatic combined damping shock absorber using it , by adopting the technical solution of the present invention, at the moment when the shock absorber is pressed down, part of the damping medium flows from the small hole to the large hole to generate down-pressing damping, and at the same time, part of the damping medium flows through the gap between the damping piston and the handle tube, effectively solving the problem of The shock feeling is caused by the fact that the damping medium cannot flow quickly at the moment of pressing down; during the rebound process of the shock absorber, the damping medium flows from the large hole to the small hole, which increases the pressure in the inner cavity of the piston sealing ring and pushes the piston sealing ring to move toward the small hole. The outer expansion seals the gap between the damping piston and the handle tube, and after the pressure in the inner cavity of the piston sealing ring decreases, the piston sealing ring retracts and restores, which improves the rebound damping effect, especially in the environment of continuous bumpy road conditions. The shock absorber has a long stroke and requires a higher frequency of reciprocating motion, so the damping effect is more prominent

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