VARIABLE DAMPING FORCE SHOCK ABSORBER WITH STROKE DEPENDENT VARIATION CHARACTERISTICS OF DAMPING FORCE

摘要

A shock absorber has a spring disc to close one endof a fluid path defined through a piston for generating dampingforce in response to piston stroke in one of bounding andrebounding direction. A coil spring is also provided forproviding additional spring force for flow restriction and thusincreasing damping force to be generated in response to thepiston stroke in one of the bouinding and rebouindingdirections. The coil spring is so oriented to become active inresponse to a piston stroke in a magnitude greater than apredetermined value and greater than a piston stroke criterioawhich defines neutral range of the piston stroke.