Patent ID: 8864160
Filing Date: 2014-10-21
Classification: B62J,B62K,B62M

Abstract:
1. A front fork for a motorcycle comprising: a spring leg including an air spring and a damper leg having a damper built therein, the spring leg and the damper leg being disposed parallel to each other, the spring leg including a first tube, which is fixed to a body side of the motorcycle and having one end that is plugged, and a second tube to which an axle of the motorcycle is fixed and having one end that is plugged, an inner periphery space being formed by inserting the second tube into the first tube; a cylindrical guide cylinder that is disposed in the inner periphery space, and that is extended from the plugged end of the first tube to the inner periphery space; a piston that is mounted to a leading end of a guide rod that extends from the plugged end of the second tube, and that slides over an inner peripheral face of the guide cylinder; an inner air spring chamber that is partitioned by the piston in an interior of the guide cylinder; an outer air spring chamber that is partitioned, outward of the inner air spring chamber, in an interior of the first tube and an interior of the second tube; a first detector for detecting pressure and temperature in the outer air spring chamber; a second detector for detecting pressure and temperature in the inner air spring chamber; and a stroke detection compensator for compensating for an influence on the pressure as a result of temperature changes in the inner air spring chamber and the outer air spring chamber and detecting a stroke amount of the spring leg, on the basis of detection results of the first detector and the second detector.