| 摘要 |
PURPOSE:To prevent a secondary battery from being left unloaded, by providing a switch which turns on by the insertion of the secondary battery between a solar battery and a timepiece body. CONSTITUTION:The limit switch is provided between the solar battery 14 and the movement 6 of the timepiece body which is driven by the battery 14 in the daytime, and when the secondary battery 9 is loaded, the limit switch turns on through elastic materials 16-18. Therefore, the movement 6 is not driven unless the secondary battery is loaded, and the secondary battery is prevented from being held unloaded to eliminate such trouble that the timepiece stops because it is not driven by the secondary battery in the nighttime. |
