Semi-active type vehicle seat vibration absorbing device with magneto-rheological elastomer

Abstract

A semi-active type vehicle seat vibration absorbing device with a magneto-rheological elastomer comprises a lower excitation coil, a working barrel, a magneto-rheological elastomer, an upper excitation coil, a spiral spring, a protection cover, a seal ring, an upper support, a piston rod, a piston, an adjusting shim, a gland nut, an upper excitation core, a lower excitation core, control wires, a controller, a signal wire, a vehicle height sensor, a magnetism isolating bottom plate and a lower support, wherein the excitation coils and the excitation cores which are used as the loading sources of an electromagnetic field are mounted in the working barrel, and the magneto-rheological elastomer is positioned between the upper excitation core and the lower excitation core; the vibrating signal of the vehicle body is transmitted to the controller by the vehicle height sensor; the size of current in the excitation coils can be changed by the controller through the control wires, and magnetic field strengths in the excitation coils and the excitation core are changed as a result, so that the rigidity and the damping of the magneto-rheological elastomer are regulated in real time; the spiral spring can assist the vibration absorbing device in absorbing and reducing vibrating energy. The semi-active type vehicle seat vibration absorbing device with the magneto-rheological elastomer is provided through the joint action of the spiral spring with fixed rigidity and damping and the magneto-rheological elastomer with adjustable rigidity and damping, so that the riding comfort of the vehicle is improved.

Description

technical field [0001] The invention relates to a vehicle seat damping device with adjustable stiffness and damping, in particular to a semi-active magneto-rheological elastomer vehicle seat damping device, which uses a new type of intelligent composite material - magnetic The rheological elastomer is used as a damping medium and belongs to the technical field of vehicle damping and safety protection. Background technique [0002] With the development of my country's vehicle industry and the improvement of residents' living standards, more and more attention has been paid to the ride comfort of vehicles. The design of vehicle seats directly affects the ride comfort of the driver and passengers. Seats with poor damping performance may cause driver fatigue and occupational diseases, and even affect the driving safety of the vehicle. Vibration and vibration absorption become an important part of vehicle design. At present, most of the vehicle seat shock absorbers are passive ...

AI Technical Summary

Problems solved by technology

At present, most of the vehicle seat shock absorbers are passive hydraulic shock absorbers or coil spring shock absorbers, which cannot adjust the stiffness and damping, and have poor comfort; while the active airbag shock absorbers have complex structures and high production and maintenance costs

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