The switch case includes a metal plate having a first surface and a second surface that is at a side opposite to the first surface, and a resin case embedding a part of the metal plate. The resin case includes a housing portion having an opening formed on a surface of the resin case. The metal plate includes a terminal portion, a contact portion, and an intermediate portion positioned between the terminal portion and the contact portion. The terminal portion is exposed from the surface of the resin case, and the intermediate portion is embedded in the resin case. The intermediate portion is provided with at least one through-hole penetrating the first surface and the second surface. The contact portion includes a part of the first surface exposed to the housing portion of the resin case. In the at least one through-hole, the hole diameter of the at least one through-hole at the second surface is larger than the hole diameter of the at least one through-hole at the first surface.

A dome switch utilized in a keyboard assembly is disclosed. The keyboard assembly may include a printed circuit board having a first electrical connector formed in the printed circuit board, and a second electrical connector formed in the printed circuit board adjacent the first electrical connector. The keyboard assembly may also include an inner contact component contacting the second electrical connector of the printed circuit board. The inner contact component may be in electrical communication with the second electrical connector of the printed circuit board. Additionally, the keyboard assembly can include a dome switch surrounding the inner contact component. The dome switch may contact and may be in electrical communication with the first electrical connector of the printed circuit board.

In a first aspect of the present disclosure, a push switch includes a substrate including a first electrode and a second electrode arranged on an upper surface of the substrate, the second electrode arranged around the first electrode; and a resilient member that is arranged on the second electrode over the first electrode. The substrate includes a recess in a lower surface of the substrate, and the recess is positioned below the first electrode that is arranged on the upper surface of the substrate.

A secure smartcard reader including a smartcard connector and a flexible printed circuit board wrapped around and at least partially surrounding the smartcard connector and at least partially defining a security volume enclosing the smartcard connector, the wrapped flexible printed circuit board defining on an outer-facing surface thereof a plurality of keypad contacts, the wrapped flexible printed circuit board defining electrical conductors connecting the plurality of keypad contacts to connector pads and the wrapped flexible printed circuit board defining a protective anti-tamper mesh protecting the electrical conductors.

A device according to claim 6, characterised in that the interrupting zone is positioned outside the switch zone in which two wires (54, 56) of a circuit are so arranged as to cooperate with the switch are positioned.

A backlit keyboard includes light guide plates; an opaque support plate including spaces each with the light guide plate disposed therein; a plurality of light emitting elements disposed on the concavity and embedded within the light guide plate; a circuit board secured onto the support plate to cover the light guide plates; keycaps above the circuit board and each including two limit members at two sides respectively; and a housing frame including openings each with the keycap slidably disposed thereon, and spacers each formed at either side of the opening of the housing frame. The spacer is fitting between two adjacent limit members that belong to each adjacent keycap and urges against the circuit board.

A secure smartcard reader including a smartcard connector and a flexible printed circuit board wrapped around and at least partially surrounding the smartcard connector and at least partially defining a security volume enclosing the smartcard connector, the wrapped flexible printed circuit board defining on an outer-facing surface thereof a plurality of keypad contacts, the wrapped flexible printed circuit board defining electrical conductors connecting the plurality of keypad contacts to connector pads and the wrapped flexible printed circuit board defining a protective anti-tamper mesh protecting the electrical conductors.

A backlit keyboard includes light guide plates; an opaque support plate including spaces each with the light guide plate disposed therein; a plurality of light emitting elements disposed on the concavity and embedded within the light guide plate; a circuit board secured onto the support plate to cover the light guide plates; keycaps above the circuit board and each including two limit members at two sides respectively; and a housing frame including openings each with the keycap slidably disposed thereon, and spacers each formed at either side of the opening of the housing frame. The spacer is fitting between two adjacent limit members that belong to each adjacent keycap and urges against the circuit board.

In a first aspect of the present disclosure, a component includes a frame that includes an upper surface, a lower surface, and an inner surface demarcating an opening; a cover arranged on the upper surface of the frame and covering the opening from above to form a recessed portion at the opening of the frame; a first resilient member; and a second resilient member arranged in the recessed portion at the opening of the frame to be over the first resilient member that is arranged across the opening of the frame and held by the frame.

Provided is a push switch that can be made thin without requiring that a notch be made into a mounting board. The push switch includes a substrate having a L-shaped cross section and wherein the substrate has a front surface, a back surface and a side face, an accommodating recess provided on the front surface, a center contact provided so as to be substantially centralized in the accommodating recess, a pair of peripheral contacts each provided at a circumferential edge of the accommodating recess, a movable contact spring constructed so as to extend across the pair of peripheral contacts and designed to be brought into contact with the center contact when pressed, a connection pad provided on the back surface and electrically connected to the mounting substrate, and an electrode provided on the side face and electrically connected to the connection pad.