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    • 8. 发明授权
    • Drive mechanism for two coaxial calendar members in watch movement
    • 两个同轴日历成员在手表运动中的驱动机制
    • US3818692A
    • 1974-06-25
    • US40014073
    • 1973-09-24
    • SCHILD SA A
    • BRON AZAUGG RSCHALLER K
    • G04B19/253G04B19/24
    • G04B19/25386
    • A drive mechanism for two coaxial calendar members meant to rotate in stepwise manner about their common axis in a watch movement, comprising a drive member provided with two fingerpieces for actuating one of each of the calendar members, a calendar wheel connected to the gear-train and coaxial with the drive member, a coupling with angular play between the calendar wheel and the drive member, a cam rigidly connected to the drive member, a lever operating in concert with the cam, and a spring acting on the lever such that it will ensure an instantaneous jump of the two calendar members by rotation of the drive members after the latter has been brought into a given orientation by the calendar wheel. The invention is further characterized in that the contour of the cam is provided with a retaining notch operating in concert with the lever and limiting the rotation of the drive member under the influence of the spring.
    • 用于两个同轴日历部件的驱动机构旨在围绕其手表运动中的共同轴线以分段方式旋转,包括设置有用于致动每个日历部件中的一个的两个手指件的驱动部件,连接到齿轮的日历轮 与驱动构件同轴,具有在日历轮和驱动构件之间的角度摆动的联接件,刚性地连接到驱动构件的凸轮,与凸轮协同操作的杆和作用在杆上的弹簧,使得 它将通过驱动构件的旋转确保两个日历构件的瞬时跳跃,在驱动构件已经通过日历轮进入给定方位之后。 本发明的特征还在于,凸轮的轮廓设置有与杠杆一致操作的保持凹口,并且在弹簧的影响下限制驱动构件的旋转。