Magnetic rigidity-controlled suspension spring mechanism

Abstract

The invention discloses a magnetic stiffness-variable bearing spring device, which is composed of an upper spring bracket, a coil spring, a vibration damping bumper and a lower spring bracket; the vibration damping bumper is arranged inside the coil spring; the upper end of the vibration damping bumper is connected with the upper spring bracket; the lower end of the vibration damping bumper is connected with the lower spring bracket; the vibration damping bumper adjusts in real-time the stiffness characteristic of the bearing spring device by adopting the principle of homopolar repulsion of apermanent magnet; according to different structural styles of the vibration damping bumper, the style of the vibration damping bumper can be divided into an upper bracket style, a lower bracket styleand a two-way style. The bearing spring device has variable stiffness characteristic so that an automobile has a fairly good riding comfort under various loading situations; meanwhile, when the automobile drives on a bad road, the bearing spring device is capable of preventing a suspension system from colliding and protecting a part from early damage so as to improve the operational reliability of the suspension system; the spring installation fully utilizes the inner space of the coil spring, thereby having the advantages of simple structure and easy implementation.

Description

technical field [0001] The invention relates to a coil spring device of a suspension system, in particular to a coil spring device with variable stiffness characteristics and capable of preventing the suspension system from colliding. Background technique [0002] At present, the coil spring device in the automobile suspension system is assembled by the coil spring and the spring support, which elastically connects the axle and the frame, transmits the vertical load acting between them, and relies on the coil spring The deformation of the car absorbs energy and eases the impact of the car when driving on uneven roads, thereby ensuring the ride comfort of the car. After the design of the ordinary coil spring is completed, its elastic coefficient is constant, that is to say, its spring stiffness cannot be changed according to the change of the load. However, the load of the car is very different when it is unloaded and fully loaded, especially for the rear suspension of a tru...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiency that the existing suspension spring device cannot adjust the spring stiffness according to the load change and cannot prevent the suspension system from colliding, and provides a magnetic variable stiffness suspension spring device, which can not only The load change adjusts the stiffness characteristics of the suspension spring device in real time, improves the ride comfort of the car, and can buffer the excessive impact force from the road surface, effectively preventing the suspension system from colliding

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