| 摘要 |
PURPOSE: To eliminate heavy damage or stress to a switch mechanism and a printed circuit board to mount the same switch mechanism, by providing a plunger mechanism that is clamped with a spring to move under the couple of extreme positional relationships depending on the layout of an actuator body. CONSTITUTION: A plunger and over-travel mechanism housing (552) on a support arm (546) in the straight line, or axial direction along the axis (A) that is clamped with a torsion spring operating on an actuator (500), are mounted to be movable for the engagement with the front wall part (554) of a plunger, and over-travel mechanism (550) of a push-button element of the switch mechanism that is usually open. Under the influence of clamping with the torsion spring, the plunger and over-travel mechanism housing (552) continuously move simultaneously with the continuous movement in the shape of an arch of the actuator (500) in the CCW direction. Therefore, a rod or bar (558) reaches the position (558)' indicated with a dotted line against a pushing force of a coil spring (566).
|
