Patent ID: 8921721

Claim:
A switch device comprising: an immovable member arranged between a plurality of switch members, which are arranged on a substrate, and a plurality of operation bodies, which are coupled to a housing so that each operation body can be pushed, wherein the immovable member includes a plurality of openings formed at locations respectively corresponding to the plurality of switch members; an elastic member including a first surface, which is coupled to a surface of the immovable member, and an opposite second surface, wherein each operation body, when pushed, activates the corresponding switch member with the elastic member, and each operation body, when released from the pushed state, deactivates the corresponding switch member as a reaction force of the elastic member returns the operation body to an initial position; and a plurality of projections formed on the second surface of the elastic member at locations corresponding to the surface of the immovable member so that each of the plurality of operation bodies is supported by at least one of the plurality of projections, wherein each projection contacts the corresponding operation body in a compressed state when the corresponding operation body is not pushed.