A key mechanism including one or more butterfly hinges. Each butterfly hinge may include a double wing design operative to move between a depressed position and non-depressed position. Hinged coupling mechanisms couple respective arms of the wings together. Additionally or alternatively, a key mechanism can include one or more half-butterfly hinges. Each half-butterfly hinge includes a double wing design operative to move between a depressed position and non-depressed position. A hinged coupling mechanism couples one set of corresponding arms of the wings together, while the other set of corresponding arms are not coupled together.

A key mechanism can include one or more butterfly hinges. Each butterfly hinge includes a double wing design operative to move between a depressed position and non-depressed position. Hinged coupling mechanisms couple respective arms of the wings together.

A mechanical axle structure suitable for a key includes a base, a function axle for generating a switch signal and a cover plate. The base, the function axle and the cover plate are connected in order from bottom to top. An upper portion of a supporting piece is fixed with a bottom surface of the cover plate, while a lower portion is fixed with the base. The function axle passes through the supporting piece to support against the bottom surface of the cover plate.

A mechanical axle structure suitable for a key includes a base, a function axle for generating a switch signal and a cover plate. The base, the function axle and the cover plate are connected in order from bottom to top. An upper portion of a supporting piece is fixed with a bottom surface of the cover plate, while a lower portion is fixed with the base. The function axle passes through the supporting piece to support against the bottom surface of the cover plate.

An electric switch includes a base which receives a plurality of fixed electrical contacts and a movable electrical contact. The switch also includes an actuating body made of elastic material. The switch also includes a central, top, pushbutton. The body includes a lateral part, surrounding a top force-receiving portion. The pushbutton includes a lateral actuating surface for acting on this top lateral part of the body. When operated, successively, the central actuating surface of the pushbutton acts on the top force-receiving portion and elastically deforms a wall part of the body, and then the lateral actuating surface of the pushbutton acts on the top lateral part.

A key mechanism including one or more butterfly hinges. Each butterfly hinge may include a double wing design operative to move between a depressed position and non-depressed position. Hinged coupling mechanisms couple respective arms of the wings together. Additionally or alternatively, a key mechanism can include one or more half-butterfly hinges. Each half-butterfly hinge includes a double wing design operative to move between a depressed position and non-depressed position. A hinged coupling mechanism couples one set of corresponding arms of the wings together, while the other set of corresponding arms are not coupled together.

A keyboard equipped with multipoint press positions comprises at least a baseboard, a keycap assembly and a command trigger assembly. The keycap assembly includes a support frame to hold a plurality of keycaps. The command trigger assembly includes a command circuit board and a plurality of elastic switches. The command circuit board includes a plurality of trigger portions corresponding to the keycaps and triggered by the keycaps, and at least one primary command circuit electrically connected to each trigger portion. The elastic switches are corresponding to and depressible by the keycaps to trigger the trigger portions. Each elastic switch includes a base and a primary movement portion, a first secondary movement portion and a second secondary movement portion that are respectively corresponding to a primary trigger switch and at least two secondary trigger switches of the trigger portions. The keyboard thus formed can provide higher press sensitivity.

A key mechanism can include one or more butterfly hinges. Each butterfly hinge includes a double wing design operative to move between a depressed position and non-depressed position. Hinged coupling mechanisms couple respective arms of the wings together.