MICROMECHANICAL MOBILE ELEMENT WITH SHOCK CONTROLLED ROTATION

摘要

A mobile micromechanical element with shock controlled rotation is provided to prevent teeth of an escape wheel from being damaged from shock by controlling rotation due to shock to the teeth. A mobile micromechanical element with shock controlled rotation comprises a central rigid part(2), arms(6) and teeth(8). The arms are extended from the central rigid part toward a peripheral part. The arms are flexible for moving the teeth in a tangential and/or a radial direction so as to absorb shock to damage to the teeth. The arms are gradually bent in a tangential direction opposite to a rotation direction of the mobile element. In this time, the thickness of the arms gradually decreases and the teeth are formed at ends of the arms.