Damping device

Abstract

The invention discloses a damping device which comprises a damper, wherein the damper comprises a shell with an inner cavity, and a piston, the outer end of a piston connecting rod of the piston extends out of one end of the shell, the outer end of the piston connecting rod and the other end of the shell are respectively provided with a first spring seat and a second spring seat, a damping spring is arranged between the first spring seat and the second spring seat, a cylindrical spacer bush is arranged between the inner circumferential side of the damping spring and the outer circumferential side of the piston connecting rod, and the first end of the spacer bush is fixed with the first spring seat. In the damping device disclosed by the invention, the spacer bush can block partial flying dust, stone and other outside foreign matters, and reduce the contact of the piston connecting rod with the dust or hard matters, thereby reducing adverse effects of the dust or hard matters to the matching of the piston connecting rod and the shell, being capable of decreasing the phenomenon of blocking a piston damping hole by the dust entering the inner cavity of the shell, ensuring the safe use of the damping device and prolonging the service life of the damping device.

Description

technical field [0001] The invention relates to the field of driving safety equipment manufacturing, and more specifically relates to a shock absorbing device. Background technique [0002] With the progress of the times and the improvement of the quality of life, motor vehicles such as cars and motorcycles have become very common means of transportation; for the comfort of driving and riding, shock absorbers are widely used in motor vehicles. [0003] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a common damping device in the prior art. [0004] The damping device includes a damper 11, the damper 11 includes a housing 111 with an inner cavity and a piston 112 matched with the inner cavity of the housing 111, the outer end of the piston connecting rod 12 of the piston 112 protrudes from one end of the housing 111; The piston 112 divides the inner cavity of the housing 111 into an upper cavity and a lower cavity. The upper cavity is a rodless...

AI Technical Summary

Problems solved by technology

During the running of the vehicle, the flying dust will easily adhere to the outer peripheral wall of the piston connecting rod 12; during the reciprocating movement of the piston connecting rod 12 up and down, a part of the dust will easily be brought into the housing 111 of the damper 11 Inside, not only will the shock absorbing oil be polluted, but the polluted shock absorbing oil will also block the damping hole of the piston 112, reducing the shock absorbing effect of the shock absorbing device, or even failing to achieve the shock absorbing effect; more dust is blocked At the mating connection between the piston connecting rod 12 and the housing 111, the friction between the piston connecting rod 12 and the housing 111 increases, which not only affects the shock absorption effect, but also increases the wear speed of the two, affecting the piston connection. The matching accuracy between the rod 12 and the housing 111 may cause the shock absorber oil 13 to leak in severe cases; the piston connecting rod 12 and the housing 111 will wear each other and produce noise at the same time, affecting the normal driving of the driver

[0007] In addition, during driving, due to the diversity of the road surface, hard objects such as some small stones may be splashed sometimes; 12 Damage to the surface of the exposed part will not only destroy the matching relationship between the piston connecting rod 12 and the housing, but also reduce the strength of the piston connecting rod, affecting driving safety

[0008] In short, the impact of dust, hard objects and other external foreign objects on the shock absorber reduces the driving and riding comfort of current motor vehicles.

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