Push button-type switch device

A push button-type switch device comprising:

• a support plate;
• an operable member to be pushed in operation;
• a contact portion arranged on said support plate and actuated upon said operable member being pushed;
• an actuating member interposed between said support plate and said operable member, and elastically deformable upon said operable member being pushed, said actuating member providing a nonlinear counteracting force to said operable member depending upon elastic deformation of said actuating member;
• a housing fixedly erecting on said support plate and surrounding said contact portion;
• a pair of link members rotatably supported by said housing, and actuated together with said operable member upon said operable member being pushed, said pair of link members limiting a direction in which said operable member moves and making said operable member move in a direction perpendicular to said support plate;
• and
• protrusions protruding from end surfaces of said housing toward an upper surface of said support plate so as to form a gap between the end surfaces of said housing and the upper surface of said support plate.

A push button-type switch device comprising:

• a support plate;
• an operable member pushable in operation;
• a contact portion arranged on said support plate and actuated upon said operable member being pushed;
• an actuating member interposed between said support plate and said operable member, and elastically deformable upon said operable member being pushed, said actuating member providing a nonlinear counteracting force to said operable member depending upon elastic deformation of said actuating member;
• a housing fixedly erecting on said support plate and surrounding said contact portion;
• a pair of link members rotatably supported by said housing, and actuated together with said operable member upon said operable member being pushed, said pair of link members limiting a direction in which said operable member moves and making said operable member move in a direction perpendicular to said support plate;
• and
• heat-insulating films interposed between said housing and said support plate.