| 摘要 |
PURPOSE:To enable lock release to be carried out through simple and smooth operation of turning movement by interposing two pairs of lock pins between the cam face of a cam rotor and the inner peripheral surface of a stator, while energizing those pins to be separated from each other respectively on the cam face. CONSTITUTION:A lock mechanism 1 is installed on a cylindrical stator 2 and a driven shaft 3. And this mechanism 1 is provided with a cam rotor 4 including two pairs of cam faces 4a, 4b, and two pairs of lock pins 5a, 5b, 6a, 6b interposed between respective cam faces 4a, 4b and the inner peripheral surface 2 of a stator and rotatably supported by the shaft of pin plates 7, 8. And tension spring members 9a, 9b are stretched across the space between the pin plates 7, 8 so as to energize lock pins 5a, 5b, 6a, 6b in the direction for separating those pins respectively from each other on the faces 4a, 4b. Further, an operation plate 10 is provided for moving those lock pins 5a, 5b, 6a, 6b in the releasing direction. |
