Patent ID: 8864146

Claim:
A vehicle height control device for a motorcycle including a damper tube that is provided on one of a vehicle body side and an axle side, a piston rod that is provided on the other one of the vehicle body side and the axle side and that slides through an oil chamber in the damper tube to extend and contract with respect to the damper tube and a suspension spring, the vehicle height control device comprising: a hydraulic jack provided around one of the damper tube and the piston rod; a spring bearing that is provided on a plunger inserted in a jack chamber in a hydraulic jack, wherein the suspension spring is interposed between the spring bearing and a spring bearing provided around the other one of the damper tube and the piston rod; and a hydraulic pump that performs a pumping operation in conjunction with telescopic motion of the piston rod with respect to the damper tube to discharge hydraulic oil so that the hydraulic oil is supplied to the jack chamber in the hydraulic jack, with a vehicle height being adjusted by this telescopic motion of the piston rod with respect to the damper tube, wherein the vehicle height control device further comprises: vehicle height detection means for detecting the vehicle height; a selector valve that connects, by switching, the jack chamber in the hydraulic jack to an oil reservoir chamber that communicates with an oil chamber in the damper tube; and control means for controlling the switching of the selector valve based on a detection result from the vehicle height detection means to retain the vehicle height at any position.