发明申请
US20070039811A1 Push-on switch 失效
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Push-on switch
摘要:
There is provided a multistage push-on switch used in input operation sections in various electronic apparatuses. In particular, there is provided a push-on switch in which a first-stage switch turns on with an operation force lower than conventionally achievable and the resultant on-state is easily retained. The push-on switch is configured such that movable contact (7) having projecting segment (11) permanently connected with outer contact (41) is accommodated in recess (21A) of switch enclosure (21), on which sheet (50) with center through hole (50A) for movable contact (7) is placed. The push-on switch also includes metal cover (13) with a cover terminal. Metal cover (13) is attached to switch enclosure (21) such that pressing segment (13C) faces off against disc segment (8) of movable contact (7) corresponding to the position of the center through hole (50A) with a predetermined vertical gap between pressing segment (13C) and disc segment (8). When a very low and weak force is applied on pressing segment (13C), it comes into contact with disc segment (8) to change the state of the first-stage switch.
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