| 摘要 |
PURPOSE:To provide an unlocking device which has no restrictions in rotating directions and is rotatable forward and backward by providing a cam plate between an hour wheel and an unlocking set wheel. CONSTITUTION:A cam plate 46 is provided between an hour wheel 40 and an unlocking set wheel 16. A cam 46 is loosely fitted to an unlocking correction shaft 14 freely rotatively and axially movably, and is made freely rotatable and coaxial with respect to the hour wheel 40 and the unlocking set wheel 16. Hence, this turns out that the hour wheel 40 opposes to the unlocking set wheel 16 by way of the cam plate 46, so that an alarm mechanism is controlled by the movement of either one of the hour wheel 40 or the unlocking set wheel 16, and in the figure, by the axial movement of the hour wheel 40, by the cam mechanism provided to the hour wheel 40, the unlocking set wheel 16 and the cam plate 46. |
