A keyboard key structure comprises a lower casing, an upper casing, a press shaft and a spring; the lower casing comprises a base and two hooks extend upward from the base; the upper casing comprises a top wall, an annular peripheral wall around the periphery of the top wall, and a through opening from the top wall, and is further provided with two see-through slots arranged on both sides of the through opening and the hooks are buckled in the see-through slots so that the lower casing and the upper casing are assembled vertically to form an internal cavity; the press shaft is contained in the cavity, and the top of the press shaft passes through the through opening; and the spring is contained in the cavity and elastically supported between the lower casing and the press shaft.

A keyboard key structure comprises a lower casing, an upper casing, a press shaft and a spring; the lower casing comprises a base and two hooks extend upward from the base; the upper casing comprises a top wall, an annular peripheral wall around the periphery of the top wall, and a through opening from the top wall, and is further provided with two see-through slots arranged on both sides of the through opening and the hooks are buckled in the see-through slots so that the lower casing and the upper casing are assembled vertically to form an internal cavity; the press shaft is contained in the cavity, and the top of the press shaft passes through the through opening; and the spring is contained in the cavity and elastically supported between the lower casing and the press shaft.

The present disclosure discloses a key structure including a keycap and a connecting member. The keycap has a bottom surface and includes a fixing portion and an elastic arm. The fixing portion is disposed on the bottom surface, and the fixing portion has a connection hole and a first opening communicating with each other. At least one end of the elastic arm connects to a side surface of the fixing portion, and the elastic arm is adjacent to the first opening. The elastic arm has an open end communicating with the opening and a limiting surface toward the bottom surface. The connecting member includes a connection pin, one end of which connects to the connection hole and the other end of which has an extension portion. The connection pin is disposed in the connection hole, and the extension portion is disposed between the bottom surface and the limiting surface.

The disclosure provides a key assembly, including: a baseplate, having a top surface and a recess groove recessed from the top surface, in which the recess groove is a blind hole; a hook, disposed on the baseplate, and extending upward from the top surface to form a hole between the hook and the top surface, in which an orthographic projection range of the hook and an orthographic projection range of the recess groove do not overlap each other; a key cap, disposed on the baseplate; an elastic member, disposed between the key cap and the baseplate; a link bar, connecting the key cap and the baseplate, in which the link bar has an extension portion passing through the hole; and a membrane, disposed on the top surface of the baseplate, in which the membrane covers at least part of the recess groove, and the extension portion abuts the membrane.

A remote control device may control electrical loads and/or load control devices of a load control system without accessing electrical wiring. The remote control device may be configured to be mounted over an installed mechanical switch having a paddle actuator and may include a base and a control unit that is configured to be removably attached to the base. The base may include a frame, a clamp arm, a screw, and/or a sleeve. The clamp arm may be configured to secure the base to a protruding portion of the paddle actuator. The clamp arm may be attached to the frame at a pivot joint. The clamp arm may be configured to pivot about the pivot joint. The pivot joint may be located proximate to an endpoint or a midpoint of the frame.

A remote control device may control electrical loads and/or load control devices of a load control system without accessing electrical wiring. The remote control device may be configured to be mounted over an installed mechanical switch having a paddle actuator and may include a base and a control unit that is configured to be removably attached to the base. The base may include a frame, a clamp arm, a screw, and/or a sleeve. The clamp arm may be configured to secure the base to a protruding portion of the paddle actuator. The clamp arm may be attached to the frame at a pivot joint. The clamp arm may be configured to pivot about the pivot joint. The pivot joint may be located proximate to an endpoint or a midpoint of the frame.

A keyboard device includes a membrane circuit board, a base plate and a key structure. The key structure a keycap, a first connecting element, a second connecting element, a stabilizer bar and an auxiliary bar. The first connecting element and the second connecting element are connected between the keycap and the base plate. The first connecting element has a first lateral side and a second lateral side. The second connecting element has a third lateral side and a fourth lateral side. The third lateral side faces the second lateral side. The stabilizer bar is pivotally coupled to the keycap, the first lateral side of the first connecting element and the fourth lateral side of the second connecting element. The auxiliary bar is pivotally coupled to the keycap, the second lateral side of the first connecting element and the third lateral side of the second connecting element.

A key unit and a keyboard using the same are provided. The key unit includes a circuit board, an elastic element, a keycap, and a processing circuit. The circuit board includes a capacitance sensing circuit embedded therein, and the capacitance sensing circuit includes a pair of sensor electrodes. The elastic element is disposed on the circuit board. The keycap is moveably disposed above and spaced apart from the circuit board. The elastic element is disposed between the keycap and the circuit board so that the keycap moves between a non-depressed position and a depressed position with respect to the circuit board. The processing circuit is electrically connected to the pair of sensor electrodes to obtain a variation of a coupling capacitance between the pair of sensor electrodes and to determine whether the keycap is touched or depressed according to the variation of coupling capacitance.

A key unit and a keyboard using the same are provided. The key unit includes a circuit board, an elastic element, a keycap, and a processing circuit. The circuit board includes a capacitance sensing circuit embedded therein, and the capacitance sensing circuit includes a pair of sensor electrodes. The elastic element is disposed on the circuit board. The keycap is moveably disposed above and spaced apart from the circuit board. The elastic element is disposed between the keycap and the circuit board so that the keycap moves between a non-depressed position and a depressed position with respect to the circuit board. The processing circuit is electrically connected to the pair of sensor electrodes to obtain a variation of a coupling capacitance between the pair of sensor electrodes and to determine whether the keycap is touched or depressed according to the variation of coupling capacitance.

A keyboard includes a base plate, a hook structure, and a plastic engaging member. The base plate has a top surface. The hook structure is connected to the base plate and raised relative to the top surface. The plastic engaging member is located on the top surface and fixed to at least a part of the hook structure.