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    • 21. 发明授权
    • Self locking knob attachment shaft for program timers
    • 用于程序定时器的自锁旋钮附件轴
    • US06201200B1
    • 2001-03-13
    • US09271576
    • 1999-03-18
    • James E. PearsonRonald S. JoycePaul H. Tuma
    • James E. PearsonRonald S. JoycePaul H. Tuma
    • H01H1900
    • H01H3/10
    • An appliance controller and its control shaft as well as a method for attaching a control knob to a control shaft are presented. The controller includes a control shaft body having a central bore and including at its forward end two cantilevers having outwardly facing detents. These detents are adapted to engage an engagement slot of a control knob. The control shaft body also includes at its rearward end two slots forming rear cantilevers having positioning detents. A locking rod is positioned within the bore of the control shaft body. It has a forward end adapted to prevent inward deflection of the forward cantilevers when it is in a locked position. This forward end is further adapted to preclude outward deflection of these cantilevers during insertion. The rearward end of the locking rod includes radially extending tabs which prevent the locking rod from being removed from the housing of the controller. This configuration allows for the securing of the control knob on the shaft from the front of the appliance by simply inserting the knob on the end of the shaft, and pushing the shaft to its retracted position. The positioning detents are then forced to engage the radially extending tabs to lock the rod in the locked position, preventing subsequent removal of the knob.
    • 提出了一种电器控制器及其控制轴以及将控制旋钮连接到控制轴的方法。 控制器包括具有中心孔的控制轴体,并且在其前端包括具有向外的止动件的两个悬臂。 这些棘爪适于接合控制旋钮的接合槽。 控制轴主体还在其后端包括形成具有定位棘爪的后悬臂的两个槽。 锁定杆位于控制轴体的孔内。 它具有前端,适于在向前悬臂处于锁定位置时防止向内偏转。 该前端进一步适于在插入期间阻止这些悬臂的向外偏转。 锁定杆的后端包括径向延伸的突片,其防止锁定杆从控制器的壳体移除。 这种构造允许通过简单地将旋钮插入轴的端部并将轴推至其缩回位置,从设备前部将控制旋钮固定在轴上。 然后,定位棘爪被迫与径向延伸的突片接合,以将杆锁定在锁定位置,防止随后移除旋钮。