WHEEL-TRAIN HOLDING MECHANISM OF ANALOG WATCH

摘要

PURPOSE: To provide a function to move the hands even under a high load in a thin analog watch module. ;CONSTITUTION: In a structure, a support plate 8 is set perpendicularly to the central-axis direction of a second wheel 3, and the displacement amount in the axial direction of a fourth wheel 4 having a structure in which a position depends on only the second wheel 3 is suppressed to a required minimum. In addition, the support plate 8 is used as a rear pressure plate, and the handling operation of a pointer is realized more surely without increasing the number of components. The support plate 8 is set, it is used as a stopper by which the displacement amount in the axial direction fundamentally independently of the handling operation of the pointer of the second wheel is suppressed to the required minimum, and it is possible to prevent a power consumption from being increased and the handling operation of the pointer from being stopped due to contact of the fourth wheel 4 with a wheel-train receiver. Since the support plate 8 is used also as the rear pressure plate existing nearly on the same cross section, the reliability of the handling operation of the pointer can be increased very effectively without largely changing a design and without increasing an assembly process.;COPYRIGHT: (C)1996,JPO