Patent ID: 8256588
Filing Date: 2012-09-04
Classification: B62K,F16F

Abstract:
1. A hydraulic shock absorber comprising: a damper cylinder having a hollow bore formed therein; a piston rod provided with a piston and inserted in the bore of the damper cylinder, the piston operable to divide the bore into a rod side oil chamber and a piston side oil chamber on opposite sides of the piston; a damping force generator provided at the piston; a pressure side damping force generator provided in the piston side oil chamber of the damper cylinder; the pressure side damping force generator is provided with a sub piston that is provided in the piston side oil chamber of the damper cylinder and has a damper force generating function; a first separator is provided in a sub piston side oil chamber of the sub piston, the first separator having a communication hole that allows the sub piston side oil chamber and a bladder side oil chamber to be in communication; and a bladder, which has a gas chamber in an interior thereof, is mounted in the bladder side oil chamber, wherein: a blow hole is provided in the bladder side oil chamber, the blow hole being normally closed by the bladder and opening when oil enters the bladder side oil chamber, and the bladder is contracted by an oil pressure when a volume of the oil reaches a predetermined capacity.