Two-cylinder damper with double-guide supporting device

Abstract

The invention discloses a two-cylinder damper with a double-guide supporting device, which comprises an oil storage cylinder, a working cylinder and the double-guide supporting device. The working cylinder is arranged in the oil storage cylinder, a compression valve is arranged on the bottom surface of the working cylinder, a piston rod moving axially is arranged in the working cylinder, a piston valve is arranged on the piston rod, the working cylinder is divided into an upper cavity and a lower cavity by the piston valve, and a sealing device is arranged between the piston rod and the oil storage cylinder. The double-guide supporting device comprises an upper guider, a lower guider and a supporting sleeve ring. The two-cylinder damper has the advantages that since the two-cylinder damper is provided with the double-guide supporting device, bending resistance of the piston rod is improved, stability of vehicles during turning can be improved, the piston rod can bear larger yawing force transmitted to the damper during turning of the vehicles, and accordingly the service life of the damper is prolonged greatly and riding comfortability is improved.

Description

technical field [0001] The invention relates to an automobile shock absorber, in particular to a double-tube shock absorber with double guide support devices. Background technique [0002] During the running of the vehicle, the piston rod of the shock absorber moves up and down, driving the oil to pass through the piston valve and compression valve to generate damping force, absorbing the vibration energy of the vehicle and ensuring the comfort of the ride. At present, the structure of the existing double-tube shock absorber generally includes an oil storage cylinder, a working cylinder arranged in the oil storage cylinder, a compression valve is provided on the bottom surface of the working cylinder, and a piston rod that moves up and down is arranged in the working cylinder. A piston valve is arranged on the piston rod, and the piston valve divides the working cylinder into upper and lower chambers. In order to ensure the axial movement of the piston rod, a guide device is...

AI Technical Summary

Problems solved by technology

In the process of turning the vehicle, the traditional double-tube shock absorber, the piston rod is subjected to the large load lateral force transmitted by the vehicle body, causing the piston rod to swing left and right with the guide device as the fulcrum, which seriously reduces the ride comfort. Moreover, it is easy to induce unsafe hidden dangers such as deformation of the oil storage cylinder, bending deformation of the piston rod, and a decrease in the sealing performance of the piston rod and the oil storage cylinder, and at the same time seriously reduce the service life of the shock absorber.

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