Shock absorber with frequency respond dependent (FRD) valve

Abstract

The invention discloses a shock absorber with a frequency respond dependent (FRD) valve. The shock absorber with the FRD valve comprises an oil storage barrel, a working cylinder, a piston rod, the FRD valve and a compression valve sub-assembly. A piston with an oil passage is sleeved outside the piston rod, a transverse through hole and a vertical through hole which are communicated with each other are formed in the piston rod, and a valve rod is arranged below the piston rod. A valve deck is arranged above the valve rod, a valve deck through hole communicated with the cavity is formed in anouter ring of the valve deck; a valve seat is fixedly connected to the lower end of the valve deck; a third valve plate fixedly connected to the circumferential side of the valve rod is arranged in the valve seat; and a fourth valve plate, a fifth valve plate and an O-shaped ring are arranged in the valve seat. The shock absorber with the FRD valve provided by the invention has the following beneficial effects that (1) vehicle body control can be improved, and high-frequency and short-stroke driving performance requirements of vehicles under bumpy road conditions can be met; (2) meanwhile, thecomfort degree during driving on a bumpy road surface is guaranteed; (3) imbalance and road high-frequency excitation transmitted to wheels are better filtered; and (4) the road holding force of thetires on the bumpy road surface is improved, so that a user can feel more vehicle controllability under the road condition.

Description

technical field [0001] The invention relates to the field of vehicle accessories, in particular to a shock absorber with an FRD valve. Background technique [0002] The shock absorber in the prior art can only provide one set of damping scheme, which is a compromise scheme for comprehensive evaluation during vehicle adjustment, which guarantees the performance of the whole vehicle when driving on the most frequently driven road surface, but cannot fully guarantee The vehicle has good driving performance in all road conditions, especially bumpy road conditions. However, when the actual car is driving on a bumpy road, the vibration frequency of the shock absorber is high and the movement stroke is short, so the existing damping scheme cannot provide good comfort; FRD: frequency response dependent (frequency response dependent). [0003] For example, a "composite shock absorber" disclosed in Chinese patent literature, its notification number CN102777533B, includes a piston and...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem that the shock absorber in the prior art cannot fully guarantee the good driving performance of the vehicle under all road conditions, especially bumpy road conditions, and cannot meet the high-frequency and short-stroke driving performance requirements of the vehicle under bumpy road conditions. Provide a shock absorber with an FRD valve, which can improve body control and meet the high-frequency, short-stroke driving performance requirements of the vehicle under bumpy road conditions; at the same time, ensure the comfort when driving on bumpy roads; better filter transmission Wheel imbalance and road high-frequency excitation; improve the grip of bumpy road tires, so that users can feel more controllability of the vehicle under road conditions

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