| 摘要 |
<p>A push button switch comprises a pushbutton 3 for actuating a snap acting contact 16 via an actuating spring 28 which is integral with restoring springs for the pushbutton 3. The restoring springs are supported on members 55,56 attached to a base plate 2 carrying the contacts 16 17, the members 55,56 being snapped into recesses 57,58 in the pushbutton 3 for returning the pushbutton 3 on the base plate 2. In an illuminated push-push switch, the spring 28 is carried by the pushbutton 3 and operates a rotatable cam 27 via a star wheel to cause actuation of the contacts 16,17. Most of the switch components are held together by snap connections. The spring 28 may alternatively act directly on the movable contact 16 to define a retractive switch. <IMAGE></p> |
