| 摘要 |
PURPOSE:To enclose the whole constitution in a watch case and improve the watertightness by oscillating the whole watch case by an oscillator and realizing an alram function. CONSTITUTION:A battery is connected to a self-oscillation circuit at set alarm time and a coil 2 is driven with its oscillation output. Then, the vibrator 1 oscillated through the driven coil 2 and a lock arm 1a strokes a stopper 4 to restrict oscillations. The vibrator 1 has proper weight and its center of oscillation deviates from the center of the watch body, so the watch case oscillates. On the other hand, the vibrator 1 is oscillated by external oscillations of the whole which is put on and a voltage is induced across the coil 2 to charge the battery. |
