| 摘要 |
PURPOSE:To obtain excellent alarming accuracy, by providing an hour switch which is closed when a specified phase relationship is obtained between an hour unlocking wheel and a plurality of hour wheels, and a minute which is closed when a specified phase relationship is obtained between a minute unlocking wheel and an one hour wheel. CONSTITUTION:In the alarm watch, the hour unlocking wheel 18 and the minute unlocking wheel 17 are provided in parallel. A 24hr wheel 14 and one hour wheel 12 are coaxially provided in both unlocking wheels. The hour which is closed when the specified phase relationship is obtained between said hour unlocking wheel 18 and said 1hr wheel 12, is provided. The minute switch, which is closed when the specified phase relationship is obtained between the minute unlocking wheel 17 and the 1hr wheel 12, is provided. When both switches are closed, the alarm sound is generated. In this consitution, the ecellent alarming accuracy can be obtained. |
