Abstract: A low profile pushbutton switch having a predetermined stroke and which is free from looseness in both horizontal and vertical directions is realized, and an input device employing this pushbutton switch is obtained by embodying the following structure. A first side of a stabilizing member is engaged with a lower face of a key-top which depresses a switch contact via an elastic body and a link member. Both terminals of a second side of the stabilizing member open at its center section are held rotatably and slidably at a height range where the first side travels upon depressing of the key-top.

Abstract: A link member consists of a set of frame bodies assembled in an X shape when seen from the side so as to be swingable each other. A base member is provided to support the link member. At least one of the link member and the base member is an elastic member which is interposed between a key top member and the opposed switch members. A springback force is obtained by the elastic member to restore the key top member and the link member to their original positions. Thus, the number of resin components is reduced. A push button switch reasonable in cost and low or short in size is provided.