An electromechanical actuator includes a housing, an electronic control unit and a switching device. The switching device includes a first member which is attached to a wall of the housing by removable attachment elements and arranged opposite an opening of the wall, and a second member which is movable relative to the first member. The electronic control unit includes a switch and a printed circuit board. The switch is actuated by the second member through the opening provided in the wall and is assembled on the printed circuit board. The printed circuit board includes an electrical connection device arranged opposite the opening of the wall. Moreover, the electrical connection device is accessible through the opening, after the first and second members are withdrawn from the wall, by removing the removable attachment elements.

A keyboard is applied to mounting on a holding baseplate of a computer device and includes a plurality of keyswitches, a membrane circuit board and a baseplate. The membrane circuit board is disposed under the plurality of keyswitches. The baseplate is disposed between the plurality of keyswitches and the membrane circuit board and is connected to the plurality of keyswitches, so as to make the plurality of keyswitches movable relative to the baseplate for triggering the membrane circuit board. The baseplate has a plurality of hooks. The plurality of hooks passes through the membrane circuit board to be engaged with a plurality of engaging hole structures of the holding baseplate respectively, so as to detachably mount the keyboard on the computer device. A number of the plurality of hooks is greater than forty.

A keyboard includes a plurality of keyswitches, a plastic baseplate, and a membrane circuit board. Each keyswitch has a keycap, a lifting mechanism and an elastic member. The lifting mechanism is movably connected to the keycap. The elastic member abuts against the keycap. The plastic baseplate has a first hole formed corresponding to each elastic member and has a connecting structure corresponding to each lifting mechanism. The connecting structure is movably connected to the lifting mechanism to make the keycap movable relative to the plastic baseplate. The membrane circuit board is disposed under the plastic baseplate. Each elastic member passes through the first hole on the plastic baseplate to be disposed on the membrane circuit board. When the keycap is pressed, the elastic member deforms downward to trigger the membrane circuit board. When the keycap is released, the elastic member returns the keycap to its original position.

A backlight module is applied to providing light to a plurality of keyswitches of a keyboard. Each keyswitch has a keycap and an elastic member abutting against the keycap. The backlight module includes a membrane circuit board and a light guide plate. The membrane circuit board has a light emitting diode corresponding to the keyswitch. The light emitting diode is located at a side of the elastic member and emits light to the keycap. The light guide plate is disposed on the membrane circuit board. The light guide plate has a slot hole for containing the light emitting diode and has a hole corresponding to the elastic member. An optical microstructure is formed on the light guide plate for guiding light of the light emitting diode to be incident to the keycap. The elastic member passes through the hole to be disposed on the membrane circuit board.

An electrical device such as, for example, a battery-powered electrical switch is disclosed. The battery-powered wireless switch includes one or more mechanisms arranged and configured to provide simplified access for servicing (e.g., replacing) the batteries located within the wireless switch. In one embodiment, the wireless switch is arranged and configured so that the batteries may be accessed by reconfiguring the wireless switch from a first closed position to a second opened position to access the batteries. Thus arranged, removal of the wireless switch from a wall-box or a surface of a wall is not required, the user may only need to remove the wall-plate in order to reconfigure the wireless switch. In one embodiment, at least a portion of the wireless switch is pivoted from the first position to the second position to provide access to the batteries.

An electrical device such as, for example, a battery-powered electrical switch is disclosed. The battery-powered wireless switch includes one or more mechanisms arranged and configured to provide simplified access for servicing (e.g., replacing) the batteries located within the wireless switch. In one embodiment, the wireless switch is arranged and configured so that the batteries may be accessed by reconfiguring the wireless switch from a first closed position to a second opened position to access the batteries. Thus arranged, removal of the wireless switch from a wall-box or a surface of a wall is not required, the user may only need to remove the wall-plate in order to reconfigure the wireless switch. In one embodiment, at least a portion of the wireless switch is pivoted from the first position to the second position to provide access to the batteries.

An input mechanism is disclosed. The input mechanism includes a dome support structure defining an opening that extends through the dome support structure, a collapsible dome positioned in the opening and engaged with the dome support structure, and a cover member coupled to the dome support structure and covering the collapsible dome, thereby retaining the collapsible dome within the opening of the dome support structure.

An input mechanism is disclosed. The input mechanism includes a dome support structure defining an opening that extends through the dome support structure, a collapsible dome positioned in the opening and engaged with the dome support structure, and a cover member coupled to the dome support structure and covering the collapsible dome, thereby retaining the collapsible dome within the opening of the dome support structure.

A key structure of a keyboard includes a keycap, a scissor connecting mechanism, a conductive circuit board and a bottom plate from top to bottom, wherein a projection is arranged between the scissor connecting mechanism and the conductive circuit board; when an optional position of the periphery of the keycap is pressed, the scissor connecting mechanism is in contact with the projection before the conductive circuit board or the bottom plate below the scissor connecting mechanism; and if the optional position of the periphery of the keycap continues being pressed, the scissor connecting mechanism positioned on one side of the pressed point is bent and deformed by using the projection as a fulcrum and is in contact with the conductive circuit board.

A scissor structure for a key of a keyboard includes an inner scissor and an outer scissor, wherein the inner scissor is fixedly connected with the outer scissor through an elastic connecting pin; when the key is pressed, the inner scissor and the outer scissor are pressed therewith, and drive the elastic deformation of the connecting pin; when the key is loosened, the inner scissor and the outer scissor are restored to an initial state under the elastic restoring force of the connecting pin, so as to transmit the key.