car shock absorber

Abstract

The invention relates to an automobile vibration reducer, which comprises a connecting rod, a work cylinder, an outer tube and an air wall, wherein the outer tube is arranged on the work cylinder in a sleeving way, the air wall is arranged on the outer tube in a sleeving way, a work cavity is formed in the work cylinder, an oil storage cavity is formed between the work cylinder and the outer tube, a bottom valve and a piston valve are arranged in the work cavity, the bottom valve is arranged at the bottom of the work cavity, the piston valve is arranged at the bottom of the connecting rod in a sleeving way, the top of the connecting rod is provided with a sealing element, the automobile vibration reducer also comprises an air bag connected onto the top end of the air wall in a sealed way, the upper part of the connecting rod is covered by the air bag, the lower part of the connecting rod is arranged in the work cylinder in a penetrating way, the piston valve sequentially comprises an electromagnetic valve assembly, a position limiting assembly, a compression valve assembly and a piston valve assembly element from top to bottom, the position limiting element comprises a position limiting block, a position limiting disc sheet and a screw bolt, the position limiting block is fixedly arranged at the tail part of the screw bolt, and the position limiting disc sheet is arranged on the screw bolt in a sleeving way and is abutted between the position limiting block and the compression valve assembly. The automobile vibration reducer has good vibration reduction and sealing effects.

Description

technical field [0001] The invention relates to a vehicle shock absorber. Background technique [0002] In order to improve the driving stability of the car, a shock absorber is usually installed in the car suspension. Most of the shock absorbers currently on the market are hydraulic shock absorbers. When moving, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly flows from one cavity to the other. At this time, the oil in the working cavity rubs against each other to form a damping force, thereby achieving vibration reduction. Effect. [0003] The current two-way acting cylinder type shock absorber usually includes a working cylinder and an oil storage cylinder. A piston and a bottom valve are arranged in the working cylinder. The piston is sleeved on the piston rod, and the piston divides the working cylinder into upper and lower parts. Chamber. When the connecting rod drives the piston to move downward, the chamber a...

AI Technical Summary

Problems solved by technology

When the connecting rod drives the piston to move downward, the chamber at the lower end is compressed, and the oil flows into the upper chamber through the piston. Most of the time, due to the low oil pressure, the required damping force cannot be achieved, resulting in vibration reduction. The response of the shock absorber is not sensitive enough, which affects the vibration reduction effect of the shock absorber

When the oil flows into the lower chamber through the upper chamber, the oil in the shock absorber is prone to foaming, resulting in unstable damping characteristics and affecting the vibration reduction effect

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