Vehicle damper

Abstract

A vibration damping device includes: an outer shell 4; a piston rod 3 and the front end of the piston rod are inserted into the outer shell 4 and reciprocate in the length direction of the outer shell 4; a coil spring 7 positioned around the periphery of the outer shell 4, It has a rebound function in the direction in which the piston rod 3 is withdrawn from the outer shell 4; the inner shell 8 is connected and fixed to the front end of the piston rod 3 and accommodated in the outer shell 4, wherein the inner shell 8 and the piston rod 3 are together The outer shell 4 reciprocates in the length direction of the outer shell; and a viscoelastic rubber layer 9 is provided between the inner shell and the outer shell, wherein the inner surface of this layer is in close contact with the outer surface of the inner shell, and this layer The outer surface is in close contact with the inner surface of the outer shell 4 and fixed. Compared with oil shock absorbers, the present invention can reduce the cost of manufacturing vehicle vibration damping devices.

Description

technical field [0001] The present invention relates to a vehicle vibration damping device incorporated in a vehicle suspension or the like for absorbing impact vibration. Background technique [0002] Suspensions used in vehicles or motorcycles consist of a combination of coil springs and oil dampers. The coil spring has the function of bearing the weight of the vehicle and reducing the impact vibration on the driver and passengers caused by the bumps on the road surface. Since the elastic constant of the spring coil is made small, the driving feeling becomes soft, but a longer stroke is required for energy absorption. Therefore, the oil shock absorber is used to absorb this vibration energy, so that the length of the suspension changes less, and the vibration is attenuated in a short time. [0003] In conclusion, the oil shock absorber that provides a good driving feeling has characteristics that the shock absorber is easy to move and contract i...

AI Technical Summary

Problems solved by technology

[0009] However, in order to produce the above-mentioned characteristics, the oil damper thus constructed requires a complicated mechanism for controlling the passage of the hydraulic oil 19 provided by the piston 17

In addition, since the parts of this mechanism require high dimensional accuracy, there is a problem that it is difficult to reduce its processing cost

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