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    • 9. 发明授权
    • Timing switch mechanism with manual adjustable cam
    • 具有手动可调整CAM的时序开关机构
    • US3737598A
    • 1973-06-05
    • US3737598D
    • 1972-02-29
    • RYTHM WATCH CO LTD
    • KUDOH TKOIDE H
    • G04C21/28H01H43/10H01H7/08
    • G04C21/28
    • The mechanism is arranged in a clock driven either by a main spring or a battery, and comprises a manually rotatable switch cam, of insulating material, having three stepped portions of progressively increasing height on its periphery and three pits or dents in its periphery, each related to one of the stepped portions. The timing switch includes two relatively fixed contact springs and a third intermediate and movable contact spring, each of the relatively fixed springs having a contact thereon engagable with a respective contact on the intermediate spring. A spring engagable in the notches releasably retains the switch cam in a selected operated position. A flexible contact arm connected to one of the two relatively fixed contacts engages an annular contact on an unlocking wheel, and a projecting contact finger is secured to an hour wheel of the clock. The annular contact has a radially inwardly projecting extension which is engagable by the contact finger on the hour wheel. The intermediate contact is normally engaged with that fixed contact which is not connected to the contact arm engaging the annular or ring contact. In another embodiment the intermediate contact and one of the fixed contacts are extended for cooperation with another cam forming part of a mechanism whereby a transistor radio, when turned on, may be automatically turned off by the clock after a preset time interval.
    • 该机构布置在由主弹簧或电池驱动的时钟中,并且包括可手动旋转的绝缘材料的开关凸轮,其周边具有逐渐增加的高度的三个阶梯部分及其周边中的三个凹坑或凹坑 与一个台阶部分有关。 定时开关包括两个相对固定的接触弹簧和第三中间和可动接触弹簧,每个相对固定的弹簧具有可在中间弹簧上与相应接触件接合的接触件。 在凹口处可接合的弹簧将开关凸轮可释放地保持在选定的操作位置。 连接到两个相对固定的触点中的一个的柔性接触臂接合解锁轮上的环形触点,并且突出的接触指状件固定到时钟的​​时轮上。 环形接触件具有径向向内突出的延伸部分,该延伸部分可由接触手指在时轮上接合。 中间触点通常与未连接到接触臂的环形或环形触点的固定触点接合。 在另一个实施例中,中间触点和固定触点中的一个被延伸以与形成机构的一部分的另一个凸轮配合,由此晶体管无线电在接通时可以在预设时间间隔之后被时钟自动关闭。