In a key switch (10), an inner dome (Din) starts to deform once a distal end portion (21) of the inner dome (Din) comes into contact with a base surface (93a) after an outer dome (Dout) starts to deform. A thick portion (25) extending straight and having a uniform wall thickness in a click generating portion (CL) has the thickness less than or equal to the minimum thickness of a thick portion (23) of an after stroke portion (AF). The degree of inclination of the thick portion (25) with respect to a center line (C0) (direction of pressing) is larger than that of the thick portion (23) with respect to the center line (C0) (c>a). Before the after stroke portion (AF) undergoes large deformation, the click generating portion (CL) undergoes buckling to cause a sudden decrease in a reaction force and generate a click feeling.

In a first aspect of the present disclosure, a push switch includes a resilient member that is made of metal, and the resilient member including a concave shape and an opening that is positioned at a center of the concave shape and at least two protrusions each protruding outward and downward with an oblique angle around the concave shape.

An electronic device may have buttons, a display, and a vibrator unit. Buttons may be included in electronic devices such as glass buttons, metal buttons, buttons that are assembled on printed circuit boards, and buttons that are partly formed from antenna structures. Button coatings may be used to improve the sliding performance of metal-on-metal buttons. A layer of polymer may be interposed between a button plate and a housing structure. A glass button member may have an underside on which a layer of patterned ink is formed. Elastomeric members may be used to reduce button rattle. Portions of a button may be provided with conductive features that form portions of an antenna.

A switch includes a case, fixed electrodes, a movable electrode and a pressing member. The fixed electrodes and the movable electrode are arranged inside the recess. The pressing member is arranged so as to cover at least a part of the recess, and displaces the movable electrode from the second position to the first position by a pressing force from the outside. The pressing member includes a first bent part and a second bent part, and a deforming part disposed therebetween. The deforming part is opposed to the movable electrode with a gap in a state where the movable electrode is in the second position. The deforming part is configured to be flexibly deformed toward the outside of the case in a state where the movable electrode is in the first position in which the fixed electrodes are in a conductive state.

An operation input unit includes a board unit including a switch, and a base. An external force application portion moves by a button portion being pushed, and changes an open or closed state of the switch by varying an external force acting on the board unit in accordance with the movement. A board deflection portion forms a space between the board deflection portion and the base in a state that the button portion is not pushed, and deflects toward a movement direction of the external force application portion by the external force application portion moving by the pushing of the button portion.

An operating device includes an operation member to be push-operated by an operator, a body mounting the operation member so as to be push-operated by the operator, a columnar portion protruding from a surface of the body opposite the operation member; and a resiliently deformable click member disposed between the columnar portion and the operation member to impart a click feeling to the operator. The click member includes a first member located on a side of the operation member and a second member located on a side of the columnar portion and having a smaller external size than the first member.