| 摘要 |
<p>PURPOSE:To enable a gate door or the like to be easily opened and closed by providing a spring means or a resilient body for energizing a cam follower toward a cam face in contact therewith. CONSTITUTION:A cam follower 4 fitted to the end of a push rod 5 is in contact with the prescribed shape of the cam face 3a of a cam 3. The push rod 5 is supported on a rod bearing member 6 in such a way as capable of advance and retreat in a direction at an angle with a direction toward the pivot 2 (or camshaft). Also, the base end of the push rod 5 is fitted with a compression coil spring 7, and the push rod 5 or cam follower 4 is energized toward the cam face 3a with the spring 7. In this case, the cam 3 and the cam follower 4 relatively turn, thereby causing a change in moment applied to an object, according to the inclination angle of the object.</p> |
