A keyboard includes a cover plate having a plurality of first keyholes, an adjustment mechanism disposed under the cover plate, and a plurality of keyswitches. The adjustment mechanism includes an adjustment frame and a plurality of adjustment portions. The adjustment frame includes a plurality of ribs defining a plurality of second keyholes corresponding to the plurality of first keyholes, respectively. Each of the adjustment portions is proximate to a corresponding one of the second keyholes. Each of the keyswitches includes a tactile feedback member and is located in corresponding first and second keyholes, so that the adjustment portion corresponds to the tactile feedback member of its corresponding keyswitch. The adjustment frame is movable relative to the cover plate, so that each of the adjustment portions drives a portion of the tactile feedback member to move, to change tactile feedback of the keyswitches.

What is presented is a key module (110) for a keyboard. The key module (110) comprises a key tappet (220) comprising a coupling portion for coupling to a keycap for the key module (110). The key module (110) also comprises a module housing (230) formed to movably accommodate the key tappet (220), in order to enable a translational actuation movement of the key tappet (220) between a rest position and an actuated position relative to the module housing (230). The key module (110) further comprises a wire bracket (560) for providing tactile and/or acoustic feedback. The wire bracket (560) is elastically deflectable in the course of the actuation movement. The wire bracket (560) is bent with an overall bending angle of less than 360 degrees. The wire bracket (560) is fixed to the key tappet (220).

What is presented is a key module (110) for a keyboard. The key module (110) comprises a key tappet (220) comprising a coupling portion for coupling to a keycap for the key module (110). The key module (110) also comprises a module housing (230) formed to movably accommodate the key tappet (220), in order to enable a translational actuation movement of the key tappet (220) between a rest position and an actuated position relative to the module housing (230). The key module (110) further comprises a wire bracket (560) for providing tactile and/or acoustic feedback. The wire bracket (560) is elastically deflectable in the course of the actuation movement. The wire bracket (560) is bent with an overall bending angle of less than 360 degrees. The wire bracket (560) is fixed to the key tappet (220).

A lifter with damping is disclosed. It comprises: an outer casing, having an opening on a top end thereof, a gear rack formed on an inside of one side thereof, a guiding groove formed on an opposite side of the gear rack, and two accommodating bins extend downwards on the bottom of the outer casing; a moving body, movably installed inside the outer casing, wherein a round hole is formed in a middle portion of the moving body, a limiting hook is formed corresponding to the guiding groove so as to slide along the guiding groove, bottoms of the moving body corresponding to the two accommodating bins form a hollow slider, respectively, a grab bar is formed horizontally between the hollow sliders, and each hollow slider houses a spring; a damping gear, inserted into the round hole and rotatably connected to the gear rack; and a circulating hooking assembly.

A lifter with damping is disclosed. It comprises: an outer casing, having an opening on a top end thereof, a gear rack formed on an inside of one side thereof, a guiding groove formed on an opposite side of the gear rack, and two accommodating bins extend downwards on the bottom of the outer casing; a moving body, movably installed inside the outer casing, wherein a round hole is formed in a middle portion of the moving body, a limiting hook is formed corresponding to the guiding groove so as to slide along the guiding groove, bottoms of the moving body corresponding to the two accommodating bins form a hollow slider, respectively, a grab bar is formed horizontally between the hollow sliders, and each hollow slider houses a spring; a damping gear, inserted into the round hole and rotatably connected to the gear rack; and a circulating hooking assembly.

A portable information handling system keyboard includes plural keys that each have a programmable variable-feel response to an end user experience with key interactions in real time. In one example embodiment, a magnetic-rheological fluid is disposed in a chamber of the key to pass through openings formed in a piston that moves downward with a keypress and upward in response to a biasing mechanism, such as a spring disposed in the chamber. Current applied to a coil around the chamber creates a magnetic field that varies the viscosity of the fluid so that key compression and range of motion associated with an input as well as key movement to a raised position are programmable to adjust based upon a sensed key position and movement.

A portable information handling system keyboard includes plural keys that each have a programmable variable-feel response to an end user experience with key interactions in real time. In one example embodiment, a magnetic-rheological fluid is disposed in a chamber of the key to pass through openings formed in a piston that moves downward with a keypress and upward in response to a biasing mechanism, such as a spring disposed in the chamber. Current applied to a coil around the chamber creates a magnetic field that varies the viscosity of the fluid so that key compression and range of motion associated with an input as well as key movement to a raised position are programmable to adjust based upon a sensed key position and movement.

A key structure is provided. The key structure includes a base plate, a keycap, a positioning element and a rod. The base plate has a through hole. The positioning element is engaged with the through hole. A projection area of the positioning element on the base plate along a lifting direction of the keycap is larger than an area of the through hole.

A key structure is provided. The key structure includes a base plate, a keycap, a positioning element and a rod. The base plate has a through hole. The positioning element is engaged with the through hole. A projection area of the positioning element on the base plate along a lifting direction of the keycap is larger than an area of the through hole.

A keyboard includes a substrate, a plurality of key structures, and an air pump. Each key structure includes a keycap disposed on the substrate, an air bag between the keycap and the substrate, and an electrical contact point between the keycap and the substrate. The airbag deformed when the keycap moves towards the substrate, applying a reaction force onto the substrate, and returns to an original state when the keycap is released. The air pump can adjust an air pressure in the airbag by charging or allowing discharge of air, so as to adjust the force applied by the deformed airbag to the substrate, thereby adjusting a tactile feedback to user for pressing the keycap.