An operation switch includes a concave portion in which an inner peripheral surface is constituted by a first inclined surface that is reduced in diameter toward a bottom portion from an external surface of a frame and a cylindrical portion that is formed in a pressing type operation button mounted on the concave portion and in which an outer peripheral surface is constituted by a second inclined surface that has a gradient larger than a gradient of the first inclined surface and faces the inner peripheral surface of the concave portion.

An operation switch includes a concave portion in which an inner peripheral surface is constituted by a first inclined surface that is reduced in diameter toward a bottom portion from an external surface of a frame and a cylindrical portion that is formed in a pressing type operation button mounted on the concave portion and in which an outer peripheral surface is constituted by a second inclined surface that has a gradient larger than a gradient of the first inclined surface and faces the inner peripheral surface of the concave portion.

A waterproof button module includes a pressing element, a circuit board, an adhesive layer, and an elastic layer sequentially stacked. The adhesive layer is attached to the circuit board and the elastic layer. The adhesive layer includes a first opening, and the elastic layer includes a second opening. The first opening is aligned with the second opening and exposes a part of the rear surface of the circuit board. The adhesive layer has an annular zone adjacent to and surrounding the first opening. The annular zone directly contacts the circuit board. The waterproof button module further includes an electric-connection assembly and a switch. The electric-connection assembly is electrically connected to the circuit board, and passes through the first opening and the second opening. The switch is electrically connected to the circuit board, and has a button. In addition, an electronic device including the waterproof button module is disclosed.

A waterproof button module includes a pressing element, a circuit board, an adhesive layer, and an elastic layer sequentially stacked. The adhesive layer is attached to the circuit board and the elastic layer. The adhesive layer includes a first opening, and the elastic layer includes a second opening. The first opening is aligned with the second opening and exposes a part of the rear surface of the circuit board. The adhesive layer has an annular zone adjacent to and surrounding the first opening. The annular zone directly contacts the circuit board. The waterproof button module further includes an electric-connection assembly and a switch. The electric-connection assembly is electrically connected to the circuit board, and passes through the first opening and the second opening. The switch is electrically connected to the circuit board, and has a button. In addition, an electronic device including the waterproof button module is disclosed.

A push switch includes: a case including a recess; a fixed contact member including a fixed contact disposed in the recess; a movable contact member including a movable contact disposed in the recess; a protective sheet disposed in a first direction from the recess and covering the recess; and a rib disposed on the protective sheet. The protective sheet includes: a pressing portion; a fixed portion fixed to the case; and an intermediate portion located between the pressing portion and the fixed portion as viewed in the first direction. As the pressing portion of the protective sheet is pressed along the first direction, the movable contact member deforms by force received from the protective sheet. The movable contact touches the fixed contact as a result of the deformation of the movable contact member.

A push switch includes: a case including a recess; a fixed contact member including a fixed contact disposed in the recess; a movable contact member including a movable contact disposed in the recess; a protective sheet disposed in a first direction from the recess and covering the recess; and a rib disposed on the protective sheet. The protective sheet includes: a pressing portion; a fixed portion fixed to the case; and an intermediate portion located between the pressing portion and the fixed portion as viewed in the first direction. As the pressing portion of the protective sheet is pressed along the first direction, the movable contact member deforms by force received from the protective sheet. The movable contact touches the fixed contact as a result of the deformation of the movable contact member.

A sensor and an electronic device are provided. The sensor includes a setting part and a seal ring in an annular shape. The setting part changes a setting of a sensor main body. The seal ring is provided to surround a shaft of the setting part and seals a gap between the shaft and a housing. The seal ring has a curved surface part and a pair of end parts. The curved surface part is curved convexly in a cross-sectional view. The pair of end parts have a shape different from the curved surface part and extend in an axial direction of the seal ring, on two sides of the curved surface part in the axial direction of the seal ring.

A sensor and an electronic device are provided. The sensor includes a setting part and a seal ring in an annular shape. The setting part changes a setting of a sensor main body. The seal ring is provided to surround a shaft of the setting part and seals a gap between the shaft and a housing. The seal ring has a curved surface part and a pair of end parts. The curved surface part is curved convexly in a cross-sectional view. The pair of end parts have a shape different from the curved surface part and extend in an axial direction of the seal ring, on two sides of the curved surface part in the axial direction of the seal ring.

An electric pushbutton switch includes a guide housing, a switching element having a haptic element that produces a pressure point and a return spring that generates a restoring force, an actuator for actuating the switching element, and a resilient tolerance compensation element arranged between the guide housing and the actuator. The switching element being stationary relative to the guide housing and the actuator being movable relative to the guide housing. The actuator actuates the switching element against the restoring force when the actuator is moved relative to the guide housing in an actuating direction of the actuator towards the switching element. The resilient tolerance compensation element is arranged between the guide housing and the actuator. The resilient compensation element has a spring force directed in the actuating direction of the actuator towards the switching element and opposite the restoring force of the return spring of the switching element.

A push switch includes a case, a fixed contact member, a moving contact member, a first protective sheet, and a second protective sheet. The case has a first surface with a recess opened and a second surface opposite from the first surface. The fixed contact member includes a fixed contact in the recess and a terminal on an outer surface of the case. The moving contact member is in the recess and includes a moving contact to contact with the fixed contact through a press operation. The first protective sheet is provided for the first surface to cover the recess. The second protective sheet covers the second surface. The first protective sheet is welded to the first surface with a first welded portion surrounding an entire circumference of the recess. The second protective sheet is welded to the second surface with a second welded portion.