| 摘要 |
A two-step switch, which may be minimized in radial direction and is suitable for PCB or FPC circuit board, has a first contact spring, having outer peripheral contacts in regular contact with first fixed contacts and having an inner contact inside the outer peripheral contacts and reversed by depressing, and a second contact spring, stacked on the first contact spring via an insulation sheet, having an outer peripheral contact in regular contact with a second fixed contact and having an inner contact inside of the outer peripheral contact and reversed by depressing. Through a first depressing, the inner contact of the first contact spring is reversed and in contact with the inner contact of the second contact spring, whereby a first electric circuit is actuated. Also through a second depressing, the inner contact of the second contact spring is reversed and in contact with the third fixed contact, whereby a second electric circuit is actuated.
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