| 摘要 |
PURPOSE:To obtain the inexpensive, reliable positioning device of simple constitution by allowing detectors to detect a cam cylinder in interlocking relation with a moving body being right before limits of rotation, and controlling the rotation range of the cam cylinder with a stopper fitted in the long-sized hole of the cam cylinder. CONSTITUTION:A roller 5 is provided to the moving body which moves axially and fitted in the cam hole 9 of the cam cylinder 7 engaged rotatably with the moving body, thereby associating the moving body and cam cylinder 7 with each other through the cam hole 9 and roller 5. The long-sized hole 11 which controls the rotation range is formed in the cam cylinder 7 and the stopper 10 united with the moving body is fitted in the long-sized hole 11. When a detector detects the cam cylinder 7 being right before a limit of rotation, the transmission of driving force is cut off and the moving body stops by abutting on an end part of the long-sized hole 11. |
