An electronic switch includes a rubber sheet that includes a first surface, a second surface opposite to the first surface, and a convex portion on the first surface. The convex portion of the rubber sheet includes a semispherical shape.

A pushbutton switch includes: a dome-shaped movable contact; and an operation key on a side of the movable contact. Pushing the operation key causes the movable contact to electrically connect at least two contacts. The operation key includes: a key body; a dome connected with an exterior of the key body and deformable by pushing the key body; a foot connected with an exterior of the dome; and a protrusion on top of the key body, protruding from the top, and deformable by compression. The movable contact includes: an upper contact in contact with a site below the key body and contacting the at least two contacts when the key body is pushed; and an outer fixing part at the upper contact in a radial direction and fixed outside of the key body of the operation key in the radial direction.

A pushbutton switch includes: a dome-shaped movable contact; and an operation key on a side of the movable contact. Pushing the operation key causes the movable contact to electrically connect at least two contacts. The operation key includes: a key body; a dome connected with an exterior of the key body and deformable by pushing the key body; a foot connected with an exterior of the dome; and a protrusion on top of the key body, protruding from the top, and deformable by compression. The movable contact includes: an upper contact in contact with a site below the key body and contacting the at least two contacts when the key body is pushed; and an outer fixing part at the upper contact in a radial direction and fixed outside of the key body of the operation key in the radial direction.

A push switch includes a base member including a depressed accommodating part, a fixed contact member provided and exposed in the accommodating part of the base member, a movable contact member installed in the accommodating part and including a dome part configured to be reversible to contact the fixed contact member, a sheet member installed to cover the accommodating part and hold the movable contact member, a pusher member installed between the top of the dome part and the sheet member, and a sheet-shaped reinforcing member formed of a material having a lower coefficient of thermal expansion than the sheet member. The reinforcing member is installed over the sheet member.

A key switch includes a movable part configured to be moved by a pressing operation, a support mechanism that movably supports the movable part, an electrical connector including multiple pairs of contacts of upper electrodes and lower electrodes, and a disc spring that is disposed between the movable part and the electrical connector and configured to be elastically deformed by movement of the movable part and to press the electrical connector. The multiple pairs of contacts are provided for one movable part. When the disc spring is deformed by the movement of the movable part, the disc spring is configured to simultaneously press the multiple pairs of contacts provided for the corresponding movable part.

A pushbutton switch member has a dome-shaped movable contact and an operation key facing and separated from a movable contact. Pushing the operation key toward the movable contact causes the movable contact to electrically connect at least two contacts on a substrate. The operation key is provided with: a key; a dome connected with an outer periphery of the key, and deformable by pushing of the key toward the substrate; and a foot connected with an outer periphery of the dome, and fixed on the substrate. The movable contact is provided with: an upper contact spaced apart from a site directly below the key, and which makes contact with a contact when the key is pushed in; and an outer fixing part disposed at the upper contact, or further outside thereof in the radial direction, and fixed outside of the key in the radial direction.

A push switch 1 includes a movable contact member 20 with a bulging portion 20a. The push switch 1 has a fixed contact member 10 with a first fixed contact portion 10a and a second fixed contact portion 10b. The push switch 1 includes an electrically conductive vibration damping member 25 elastically deformable by an operating force lower than load for inversion operation of the bulging portion 20a. When the movable contact member 20 is operated from the initial state, the vibration damping member 25 is deflected due to elastic deformation while the operating force during the elastic deformation of the vibration damping member 25 increases monotonically. When the movable contact member 20 returns from the bulging portion 20a being in an inverted state to the initial state, the vibration damping member 25 absorbs the vibrations from the movable contact member 20.

A push switch 1 includes a movable contact member 20 with a bulging portion 20a. The push switch 1 has a fixed contact member 10 with a first fixed contact portion 10a and a second fixed contact portion 10b. The push switch 1 includes an electrically conductive vibration damping member 25 elastically deformable by an operating force lower than load for inversion operation of the bulging portion 20a. When the movable contact member 20 is operated from the initial state, the vibration damping member 25 is deflected due to elastic deformation while the operating force during the elastic deformation of the vibration damping member 25 increases monotonically. When the movable contact member 20 returns from the bulging portion 20a being in an inverted state to the initial state, the vibration damping member 25 absorbs the vibrations from the movable contact member 20.

A switch component includes a spring plate and a cover of rubber. The cover of rubber covers at least one part of an upper surface of the spring plate. The cover of rubber includes at least one pair of supporting portions that support the spring plate.

An actuator is provided for creating an electrical contact between two tracks of a printed circuit board. The actuator includes a polymer part, forming an arm including one contact end and one end for setting in motion; and a metal part, fixedly attached to the contact end, having a general shape of a cap.