Patent ID: 7913823

Claim:
A hydraulic shock absorber in which an inner tube in an axle side is slidably inserted into an outer tube in a vehicle body side, comprising: a partition wall member is provided in an inner periphery of the inner tube, a working fluid chamber is comparted in a lower portion of the partition wall member, an oil reservoir chamber is comparted in an upper portion, a piston support member attached to the outer tube side is inserted into the working fluid chamber through the partition wall member, and a piston sliding within the working fluid chamber is provided in a leading end portion of the piston support member, wherein a main suspension spring is interposed between an upper spring bearing in the piston support member side attached to the outer tube side and a lower spring bearing in a bottom portion side of the inner tube, within the working fluid chamber of the inner tube, wherein a sub suspension spring is interposed between an upper spring bearing in an upper end portion side of the outer tube side and a lower spring bearing in the partition wall member provided in an inner periphery of the inner tube, within the oil reservoir chamber of the inner tube, and wherein a spring constant of the main suspension spring is set to a lower limit in an upper and lower limit range of a spring constant required for the hydraulic shock absorber.