REVERSE INSTALLATION TYPE VARIABLE DAMPING FORCE SHOCK ABSORBER VARIABLE OF DAMPING CHARACTERISTICS BOTH FOR BOUNDING AND REBOUNDING STROKE MOTIONS

摘要

A shock absorber has a cylinder tube coaxiallyarranged with a strut tube for defining therebetween anannular reservoir chamber and an upper reservoir chamberwhich is separated from the annular reservoir chamber. Afirst fluid path is defined for permitting fluid flow from alower fluid chamber in the cylinder tube to an upper fluidchamber and the annular reservoir chamber in response tobounding stroke of vibration. A second fluid path is alsodefined for permitting fluid flow from the lower fluidchamber and the annular reservoir chamber to the upper fluidchamber and the upper reservoir chamber, in response torebounding stroke of vibration. A first flow restrictionmeans is disposed in the first path for generating dampingforce in response to bounding stroke of vibration, whichdamping force is variable depending upon magnitude ofbounding stroke in essentially linear variationcharacteristics. A second flow restriction means is alsodisposed in the second path for generating damping force inresponse to bounding stroke of vibration, which dampingforce is variable depending upon magnitude of boundingstroke in essentially linear variation characteristics.