公开(公告)号：US06434086B1

公开(公告)日：2002-08-13

申请号：US09720737

申请日：2000-12-29

申请人： Kazuo Suzuki ,  Takayasu Machida ,  Takanori Nanya ,  Shigeyuki Takahashi ,  Takeaki Shimanouchi

发明人： Kazuo Suzuki ,  Takayasu Machida ,  Takanori Nanya ,  Shigeyuki Takahashi ,  Takeaki Shimanouchi

IPC分类号： G04B1302

CPC分类号： G04B19/02 ,  G04C3/008

摘要： In an analog electronic timepiece in which the rotation of a rotor (1a) step motor (1) is decelerated through train wheels before it is transmitted an hour hand (17) and a minute hand (15), the gravity center of a center wheel composed of a center wheel gear (9), a center wheel pinion (10), and a center wheel shaft (11) to which the minute hand (15) is mounted is displaced from the axis of the center wheel shaft (11) to within an angle range of less than ±90° with respect to the opposite direction to a direction in which a time indicating part (15a) of the minute hand (15) extends so as to reduce a moment on the center wheel shaft (11) caused by a combination of the minute hand (15) and the center wheel. This makes it possible to prevent a hand-skip due to disturbance even if the value of holding energy of the step motor (1) is reduced.

摘要翻译： 在转子（1a）步进马达（1）的旋转在传送时针（17）和分针（15）之前通过轮系减速的模拟电子时计中，中心轮 由分针（15）安装的中心轮齿轮（9），中心轮小齿轮（10）和中心轮轴（11）与中心轮轴（11）的轴线分离成 在相对于与分针（15）的时间指示部分（15a）延伸的方向相反的方向小于±90°的角度范围内，以减小中心轮轴（11）上的力矩， 由分针（15）和中心轮的组合引起的。 这使得即使降低步进电机（1）的保持能量的值，也可以防止由于干扰而产生的手跳。