| 摘要 |
PURPOSE:To improve the impact resistivity of a wrist watch with a reduction in the transmission level of a force applied from outside to a crystal resonator by fixing a cylinder type crystal resonator on the circumference of a cylinder section thereof from at least four directions with a plastic member. CONSTITUTION:A cylinder type crystal resonator 9 is tightened and fixed with plastic members 13 and 14 for fixing the crystal resonator. The plastic members 13 and 14 for fixing the crystal resonator use a soft plastic increase a damper constant so that the plastic member 14 for fixing the crystal resonator will be formed in a V shape to fix the crystal resonator 9 relatively soft and secure on a V-shaped inclined surface. Thus, a higher damper constant is obtained to enhance the impact resistivity. |
