TIMEPIECE WITH CALENDAR MECHANISM HAVING FIRST DATE WHEEL AND SECOND DATE WHEEL

摘要

PROBLEM TO BE SOLVED: To provide a timepiece with a calendar mechanism capable of large date display and development of design variation, and having the degree of freedom of a date display position. SOLUTION: This timepiece with the calendar mechanism includes the first date wheel 512 for displaying the units digits in a date, and the second date wheel 522 for displaying tens digits in the date. The first date wheel 512 includes the first day wheel gear part 516 for rotating the first date wheel 512 by rotation of a front gear train, and a driving cam 532 for rotating the second date wheel 522 and determining the position of the second date wheel 522. The driving cam 532 preferably includes a cam arc part constituted so as to have a shape including four concentric circles having each different radius. COPYRIGHT: (C)2007,JPO&INPIT