| 摘要 |
An actuator mechanism, particularly for a potentiometer, comprises a mounting frame defining an interior space. An elongate rotary shaft traverses that space. A lever arm is secured to the shaft and extends radially away from the longitudinal axis of the shaft within the space defined by the mounting frame. The mounting frame has two substantially parallel surfaces that confront the lever arm, and respective friction assemblies are interposed between the lever arm and those two surfaces respectively. Each friction assembly comprises a body of friction material engaging one of the two parallel surfaces, and a compression spring that urges the body of friction material against that surface. The body of friction material and the spring are maintained captive between the lever arm and the surface of the frame that is engaged by the body of friction material. |
