Abstract: A height-adjusting collapsible mechanism for a button key includes a pair of collapsible means for supporting the button key to move up or down above a substrate. At least one collapsible means has two levers pivotally crossed to form a cross angle in between. The levers have two bottom ends pivotally engaged with the substrate and spaced from each other at an interval. One of the bottom ends is located on a stopper slidable on the substrate. Moving the stopper may change the interval and the cross angle, and may thus in turn change the free height of the button key when external forcing is absent from the button key.

Abstract: A key device includes a base plate, a keycap set above the base plate, a scissors mechanism between the base plate and the keycap, and an elastic component with a first end connected to the base plate and a second end connected to the first supporting arm. The scissors mechanism includes a first supporting arm and a second supporting arm for forming the scissors mechanism in an intersecting manner. The elastic component includes a first angle formed between the base plate and the elastic component, and the first angle is less than 90 degrees. While the keycap is depressed, the keycap moves downwards with the second end of the elastic component, the elastic component rotates around the first end of the elastic component to decrease the first angle, and the elastic component is stressed and deformed to support an upward spring force of the keycap.

Abstract: A control device, which is comprised of a sensor board that comprises a first through hole; at least one first sensor situated on the sensor board, provided to generate an inductive signal according to a distortion of the sensor board; a control post that passes through the first through hole; and a stopper, connected to one end of the post, and further connected to the sensor board, thus connecting the post to the sensor board. In this manner, the length of the control post can be increased without adding to the thickness of the notebook PC. Corresponding to applied force, the control post may produce larger torque, increasing the sensitivity of the control device.

Abstract: A portable keyboard comprises a flexible substrate, at least two key groups disposed on the flexible substrate, a circuit board disposed on the flexible substrate, a connector electrically connected to the circuit board and a fixative element having a first connecting portion and a second connecting portion disposed on the substrate. As the flexible substrate is properly tensed to let the first connecting portion join the second connecting portion, the overlapped key groups and the circuit board are all wrapped by the flexible substrate. The folded keyboard is pocket size and easily transported and deployed.

Abstract: A collapsible keyboard includes a keyboard base, at least one section hinge, a key base, at least one fixed hinge, at least one movable hinge and a plurality of keys. The keyboard base has a plurality of first sections. The section hinge connects the plurality of first sections so that the first sections are rotatable with respect to each other. The key base has a plurality of second sections provided on the first sections. The fixed hinge connects the second sections so that they are rotatable with respect to each other. The movable hinge connects one of the first sections and one of the second sections. The keys are provided on the second sections.

Abstract: An improved multiple-width keyswitch capable of inhibiting noise thereof induced during operation is provided. The multiple-width keyswitch includes a keycap and a substrate. During operation, the keycap moves vertically relative to the substrate. The keycap defines a lower surface which is provided with a plurality of bosses. The substrate is provided with a plurality of openings. Each of the plurality of openings is disposed under one corresponding boss and covered with a deformable layer. When the keycap moves downward to turn on the keyswitch, each of the bosses first impacts the deformable layer into the corresponding opening such that the impact energy of the keycap is absorbed by the deformable layer. Thereby the noise induced by the impact of the keycap can be effectively inhibited. Embodiments and equivalent modifications of the invention are described in detail in the specification.