| 摘要 |
A locking control device is provided for electronic equipment and the like of the type having a rotary control member with a rotary spline shaft fixedly mounted through a housing by a nut. The locking control device consists of a gripping member secured in a stationary manner onto the housing about the rotary spline shaft on the rotary control member. A control knob having an enlarged collar and spline center bore is slideably mounted onto the rotary spline shaft above the gripping member. Rotation of the control knob will rotate the rotary spline shaft of the rotary control member. A mechanism within the enlarged collar of the control knob for engagedly mating its gripping surface with the gripping member, when the control knob is pushed completely down onto the rotary spline shaft, thereby preventing accidental movement of the rotary spline shaft.
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