EXTENSION/CONTRACTION QUANTITY DETECTING DEVICE FOR DAMPING DEVICE FOR VEHICLE

摘要

PURPOSE:To protect a sensor in maintenance by installing a cam on one between a swing arm and a car body frame and installing an angle sensor on the other, springily attaching the cam follower of the angle sensor to the cam, slipping off the turning edge of the swing arm downward and releasing the cam follower from the cam. CONSTITUTION:The front edge of a swing arm 20 is axially supported on the bracket 18 of a car body frame by a pivot shaft A, and a wheel is installed at the rear edge. A cushion unit 30 is installed on the arm 20, and the extension/ contraction quantity is measured by an angle sensor 38 which has a cam 40 erecting upwardly and a cam follower 38a pressed to the cam 40 on a bearing cylinder held on the pivot shaft A. Accordingly, the swing arm 20 is turned around the shaft A according to the extension and contraction of the cushion unit 30, and the cam follower 38a is turned in accordance. When the rear arm 20 is released from the unit 30 for maintenance, etc., the cam 40 is turned in the counterclockwise direction, and separated from the cam follower 38a, and the application of a sharp force to the sensor 30 is prevented.