Abstract: An audio signal processing method, includes: acquiring first rotation information when a wearable device rotates and second rotation information when a mobile device connected to the wearable device rotates; determining relative position information between the wearable device and the mobile device according to the first rotation information and the second rotation information; and processing an audio signal based on the relative position information to obtain a playing audio played by the wearable device.

Abstract: The operating unit for a vehicle includes an operating element having an operating surface movable in an actuating direction from a rest position into a function-triggering position and from the function-triggering position back to the rest position by means of depressing. A parallel guiding device ensures that the operating surface moves in parallel. The parallel guiding device is provided with at least one pair of engaging first and second levers which are mounted in an articulated manner with play on support elements being in turn connected to the operating element. The support elements are axially guided on a carrier element. The levers are pivotably mounted on bearing blocks, substantially free of play, so that the operating element behaves substantially free of play in directions transverse to the depressing movement. The parallel guiding device is designed in compliance with tolerances that are comparatively easy to realize in terms of manufacture.

Abstract: A keyswitch structure includes a lift mechanism and a keycap. Two supports of the lift mechanism support the keycap. There can be a spring structure connecting the two supports for driving the two supports to lift the keycap. The lift mechanism defines a central space extending through the whole lift mechanism in a vertical direction. The spring structure does not enter the central space. The two supports abut against and constrain each other through corresponding structures, to mutually rotate with respect to a rotation axis. The keyswitch structure can include a switch. The switch includes an intermediate support, detachably abutting downward against the lift mechanism or the keycap, and a resilient part, detachably abutting downward against the intermediate support. In the process of pressing the keycap, the intermediate support is separated from the lift mechanism or the keycap, so that the contact force of the switch can be maintained constant.

Abstract: A backlit module for a backlit keyboard is provided. The backlit module includes a lighting board. The lighting board includes a substrate and an electronic device layer. The electronic device layer is disposed on the substrate. The electronic device layer includes a plurality of key circuit groups. Each of the key circuit groups corresponds to a key group of the backlit keyboard, and includes one or more light sources and a resistor. When the key circuit group includes a plurality of light sources, the light sources are arranged in parallel. The one or more light sources correspond to one or more key of the key group. The resistor is arranged in series with the one or more light sources.

Abstract: A movement mechanism includes: a case; a moving portion movable with respect to the case; and a support member that links the case and moving portion together and supports the moving portion so as to be movable with respect to the case. The support member has a plurality of pairs of first support portions and a plurality of pairs of second support portions, each of which is elastically deformable, has a plate-like shape, and extends between the case and the moving portion. The first support portions and second support portions are respectively placed on a first side and a second side in a moving direction of the moving portion so as to be symmetric with respect to the moving portion in plan view.

Abstract: A key module includes a base plate, a circuit layer and a lifting mechanism. The circuit layer is disposed on the base plate. The lifting mechanism is pivotally connected with the base plate relative to the circuit layer, and the lifting mechanism has an abutment element. The abutment element could interfere with the circuit layer to reduce the noise generated by the key module during operation.

Abstract: A keyboard and a key structure capable of displaying instant image thereof are provided. The key structure includes a display unit, a circuit membrane, an elastic member, a key seat, a first supporting frame, a second supporting frame, and a translucent keycap. The first supporting frame has two first arms and two axle portions. The ends of the first arms are slidably disposed on an accommodation portion of the key seat. The second supporting frame has two second arms and two linking holes. The ends of the second arms are pivotally connected to the accommodation portion. The linking hole is elongated-shaped. When the translucent keycap is not pressed, the axle portion abuts against one hole-end of the linking hole. When the translucent keycap is pressed, the axle portion abuts against another one hole-end of the linking hole.

Abstract: For suppressing wobbling of a button while suppressing reactive force generated when the button is pressed, a hinge structure of a button includes a contact portion contacting a substrate on which the button is arranged, a button main body varying in a relative positional relationship with the substrate, a first hinge having flexibility, and being coupled to the button main body at one end and coupled to the contact portion at another end, and a second hinge having flexibility, and being coupled at one end to a position in the button main body on an opposite side on which the first hinge is coupled to the button main body, and coupled at another end to the first hinge at a position in the button main body on a side on which the first hinge is coupled.

Abstract: An input device includes an operation member vertically movably disposed on a support, urging means for urging the operation member upward, and an inclination preventive member reducing inclination of the operation member by coupling first and second ends of the operation member in a first horizontal direction and linking vertical movements of the first and second ends together. The inclination preventive member includes a main shaft extending in the first horizontal direction and rotatably and axially supported by the support, a pair of arms extending from opposite ends of the main shaft toward an identical side of a second horizontal direction crossing the first horizontal direction, and a pair of secondary shafts extending in the first horizontal direction from distal ends of the pair of arms, and rotatably and axially supported by the first and second ends. The pair of arms include short and long arms.

Abstract: A button mechanism includes a button, a module, and a thin sheet spring. The thin sheet spring is in physical communication with the button and with the module. The thin sheet spring exerts a tension force on the button and the module to bias the button toward a normal position. In response to a force greater than the tension force being exerted on the button, a portion of the thin sheet stretches to enable the button to be placed in a contact position. In response to the force being removed from the button, the tension force causes the thin sheet to snap back to an original position and biases the button toward the normal position.

Abstract: A keyswitch structure includes a keycap support mechanism and a keycap that is supported by the keycap support mechanism in a vertical direction. The keycap support mechanism includes a base and two supports. The base has two sliding slots. Each sliding slot has an opening in a horizontal direction and an obstruction block at the opening. The horizontal direction is perpendicular to the vertical direction. Each support has a sliding portion and a linkage portion. The sliding portions slide parallel to the horizontal direction in the sliding slots correspondingly. The obstruction block prevents the corresponding sliding portion from disengaging from the corresponding sliding slot. The two linkage portions push against each other in line contact, so that the two supports are mutually driven through the two linkage portions.

Abstract: A character key device includes a bottom plate, a backlight module, a film module, a support module and a key cap. The backlight module includes a metal plate, an insulating layer, a backlight circuit and a light emitter. The metal plate includes a metal plate body, and a plurality of pivot seats extending upwardly from the metal plate body. The film module is disposed on the backlight circuit. The film module defines at least one accommodating space adjacent to the backlight circuit and allowing the at least one light emitter to extend therein. The film module is pressable to generate a trigger signal. The support module includes a support disposed on the film module and connected to the pivot seats of the metal plate, and an elastomer disposed on the film module. The key cap is disposed on the support module.

Abstract: A key module includes a bottom plate, a circuit layer, a key cap, a supporting structure, a touch member, and a flexible circuit board. The bottom plate has a first surface and a second surface opposite to each other. The circuit layer is disposed on the first surface and has a first opening. The key cap is disposed above the circuit layer and covers the first opening. The supporting structure is disposed between the bottom plate and the key cap. The touch member is disposed at the key cap. The flexible circuit board is electrically connected to the touch member and passes through the first opening to extend next to the second surface of the bottom plate. When the key cap moves downward relative to the bottom plate, a portion of the flexible circuit board located between the key cap and the bottom plate is bent.

Abstract: A keyswitch structure includes a base plate, a keycap, and a keycap support mechanism that supports the keycap above the base plate in a vertical direction. The keycap and the keycap support mechanism extend lengthwise in a lengthwise direction. The keycap support mechanism includes an outer support and an inner support pivotally connected to each other. The outer support surrounds the inner support. The inner support includes a support body and a reinforcement part. The reinforcement part is embedded in the support body. The reinforcement part is greater in elastic modulus than the support body. The inner support defines a side connection section on both sides of the inner support in the lengthwise direction. Each side connection section includes at least one base plate connecting portion and at least one keycap connecting portion. The reinforcement part extends into the two side connection sections.

Abstract: Keyboards and other input devices are provided with at least one flexible layer that extends over or under the keycaps. The flexible layer spans interkey spaces and provides finger support and key definition as the user feels the top surface of the keycaps and flexible layer. The flexible layer therefore smooths the top surface of the keyboard, supports fingers during key travel, prevents ingress of contaminants, fluids, or debris into the keyboard, and provides a surface that can be used as a touch interface that coincides with the keyboard.

Abstract: A keyboard device includes a substrate, a keycap, and a link member. The keycap is disposed on the substrate and provided with a limiting member including a top wall, a bottom wall, and a slide groove. In the slide groove, the top wall has a first guide bevel and the bottom wall has a second guide bevel. The link member is disposed between the substrate and the keycap and includes a slide connection portion and a pivot connection portion. The slide connection portion is slidably disposed in the slide groove, and the pivot connection portion is pivotally connected to the substrate. When the keycap is pressed to move downwardly toward the substrate, the pivot connection portion of the link member is rotated with respect to the substrate, and the slide connection portion slides along the first guide bevel and the second guide bevel.

Abstract: A key structure, including a base plate, a thin film circuit, a dome switch, a scissor structure, an elastic piece, and a keycap, is provided. The thin film circuit is disposed on the base plate. The dome switch is disposed on the thin film circuit. The scissor structure is disposed on the base plate, wherein the scissor structure includes a first support and a second support pivotally connected to the first support, and the second support surrounds the first support. The first support has a trigger part, and the second support has a chamber disposed corresponding to the trigger part. The elastic piece is engaged inside the chamber, wherein the elastic piece has an interfering part located outside the chamber, and the interfering part is located on a moving path of the trigger part. The keycap is disposed on the scissor structure and the dome switch.

Abstract: A keycap is provided, including a base element, a cap and a character element. The base element includes a board main portion. The cap has a top portion, and a skirt portion. The skirt portion surrounds the top portion. The character element, located between the board main portion and the top portion. An area of the top portion corresponding to the character element is a top area. The thickness of the top area is substantially greater than or equal to 0.01 cm and substantially less than or equal to 0.3 cm.

Abstract: A button assembly includes a bottom plate, a cap, an elastic member, a link member, and an interference member. The cap is disposed on the bottom plate, and the cap has a button surface and an inner surface relative to each other. The elastic member is disposed under the cap. The link member has two parallel portions parallel to each other and a horizontal portion connected with the two parallel portions, wherein the two parallel portions are disposed to the bottom plate and the horizontal portion is disposed to the inner surface. The interference member is disposed between the inner surface and the link member.

Abstract: The illuminated push-button switch device includes a shell-portion enclosing a switch element and a light source and having one or more opening-portions protruding from an upper surface of the shell-portion; a button-portion provided to cover the opening-portions, the button-portion being vertically movable along the opening-portions; and a panel-portion surrounding an outside of the button-portion and provided on the upper surface of the shell-portion, wherein gap is provided between the panel-portion and the button-portion in a top view, wherein the upper surface of the shell-portion extends along a plane perpendicular to a vertical movement direction of the button-portion, and a slope-portion at a predetermined angle with respect to the upper surface is formed on a portion of the upper surface situated under the gap, and wherein a height of the slope-portion along the vertical movement direction gradually decreases from a button-portion side to a panel portion side.

Abstract: An electronic device is provided, including a display module, an input module, a touchpad unit disposed on the input module, several first magnetic elements, and several second magnetic elements. The input module is connected to the display module. The first magnetic elements are disposed on the bottom plate of the touchpad unit, and the second magnetic elements are disposed on the frame of the touchpad unit. The first and second magnetic elements generate a repulsion force to keep the frame in an initial position relative to the bottom plate.

Abstract: A touch pad structure includes a base, a guiding component rotatably disposed on the base, a touch pad disposed above the base, and a switch. The guiding component is located between the base and the touch pad. The touch pad has an inner surface facing the base. Here, the switch is disposed on the inner surface, and a guiding structure is disposed on the inner surface. The guiding structure is slidably connected to the guiding component. The touch pad moving toward the base drives the guiding component to rotate relative to the base through the guiding structure, and the touch pad moves along a vertical direction.

Abstract: A keyboard device includes a substrate, a keycap on the substrate, a first link member connected between the substrate and the keycap and is adjacent to the first side portion of the keycap, and a second link member connected between the substrate and the keycap and is adjacent to the second side portion of the keycap. The two first short swing arms of the first link member are respectively connected to two ends of the first pivot arm of the first link member. A length of each first short swing arm is less than half of a length of the first pivot arm. The two second short swing arms of the second link member are respectively connected to two ends of the second pivot arm of the second link member. A length of each second short swing arm is less than half of a length of the second pivot arm.

Abstract: The shell is provided with an axial opening at the top and a guide track structure inside. The movable terminal is provided inside the shell and forms an arm spring. The actuating lever is threaded through the axial opening, with a flat slope on one side and a positioning slope on the other. The actuating lever is provided with a guiding structure, and the positioning slope is provided with a positioning structure. Moving upwards along the circumference, the actuating lever has a position 1 and a position 2. When the actuating lever is at position 1 or position 2, the guiding structure joins the guide track structure. When the actuating lever is at position 1, the arm spring comes into contact with the flat slope and slips. When the actuating lever is at position 2, the arm spring comes into contact with the positioning slope and slips.

Abstract: A key structure is provided. The key structure includes a base plate, a key cap and a lifting mechanism is provided. The base plate includes a first bottom wall. The key cap is disposed opposite to the base plate and includes a first cap wall. The lifting mechanism is movably connected between the key cap and the base plate, so that the key cap could reciprocate with respect to the base plate. The lifting mechanism includes a first lower shaft portion and a first upper shaft portion, which are respectively movably connected on the same side of the key cap and the base plate. When the key cap is in a released state, the first upper shaft portion presses against the first cap wall, but the first lower shaft portion is separated from the bottom wall by a maintaining gap.

Abstract: A key structure includes a keycap, a scissors-type connecting element, a first knocking part, a resilience element and a second knocking part. The scissors-type connecting element is coupled to a bottom surface of the keycap. The scissors-type connecting element includes an inner frame and an outer frame. The first knocking part is disposed within a space surrounded by the inner frame. The resilience element is located under the first knocking part. The second knocking part is coupled to the bottom surface of the keycap and faces the first knocking part. While the keycap is pressed down, the second knocking part knocks on the first knocking part, and the first knocking part is moved downwardly. When the keycap is not pressed down, the first knocking part is moved upwardly and returned to an original position in response to an elastic force of the resilience element.

Abstract: A keyboard stabilizer is adapted to reduce the clanking and rattling sounds that it makes during operation. The invention takes advantage of the surprising result that adhesive, in proper amounts, can act as a sound dampener. First, a circumferential score is cut near each tip of the wire. Second, adhesive is applied to several critical points on the housings, stems, and wire. Third, lubricant is applied to several critical points on the housings, stems, and wire. The stabilizer is then assembled from the prepared parts.

Abstract: An enhanced push-button includes a keycap disposed on an elastic member and having a top surface and an opposing bottom surface, and a reinforcing member mounted on the bottom surface of the keycap and having an outer surface facing the elastic member and an abutting portion located on the outer surface. The abutting portion has a contact surface recessed on the outer surface. The elastic member extends into the abutting portion such that the contact surface is abutted against the elastic member for allowing the keycap to be pressed with the reinforcing member against the elastic member to trigger a circuit switch. The invention can have better overall structural rigidity and operating feel and can maintain the pressing quality of the push-button and is suitable for low profile keyboards.

Abstract: A push switch and a motor vehicle in which such a push switch is used. The push switch has a push cap, a baseplate, a switch element which is actuatable by the push cap, a first lever, and a second lever. The first lever and the second lever are mounted rotatably on the baseplate by means of bearing blocks and are each connected movably to the push cap at a first lever end. At a second lever end, the first lever and the second lever are connected movably to one another. The first lever and the second lever are designed such that they form mass compensation for the push cap.

Abstract: A keyswitch includes a cap, first and second support members slidably connected to the cap and opposite to each other, and first and second blocks formed on the cap. The cap is movable between a non-pressed position and a pressed position. The first support member abuts against the first block when the cap is located at the non-pressed position. The first block moves away from the first support member at a first gap when the cap moves downward from the non-pressed position. The first support member abuts against the cap when the cap is located at the non-pressed position, and abuts against the second block when the cap continues moving downward to the pressed position.

Abstract: A key switch is provided, which includes a base, a cap, a first linkage rod, a second linkage rod, an elastic contraction element, at least one activate member and a thin film circuit unit. The base includes a plurality of first connection portions and a plurality of second connection portions. The first linkage rod is movably connected to the first connection portions and the cap. The second linkage rod is movably connected to the second connection portions and the cap. One end of the elastic contraction element is connected to the first linkage rod, and the other end thereof is connected to the second linkage rod. The activate member is disposed on one of the first linkage rod, the second linkage rod and the cap. The thin film circuit unit includes an activate portion.

Abstract: A key structure includes a keycap, a base plate and a supporting element. The supporting element includes a first frame and a second frame. The supporting element is connected with the keycap and the base plate. Consequently, the keycap is movable upwardly or downwardly relative to the base plate. When the first frame and a second frame are combined together, a first span and a second span are formed sequentially. The second span is smaller than the first frame.

Abstract: The present invention discloses a pressing mechanism, comprising a pressing member, a support, a pressing member supporting spring, and a first sliding member and a second sliding member which synchronously slide in opposite directions, the first sliding member being provided with first inclined grooves, the second sliding member being provided with second inclined grooves, the first and second inclined grooves being oppositely inclined and inclined with respect to the lifting direction of the pressing member, and the first and second inclined grooves being provided in pairs; the first and second inclined grooves are provided on both sides, corresponding to the pressing member, of the first and second sliding members, and are respectively formed in pairs, the pressing member is movably connected to the first inclined grooves and the second inclined grooves by means of movable connection shafts, each movable connection shaft penetrating through the paired first and second inclined grooves, and the support is p

Abstract: Systems and apparatus related to an automated footwear platform including an actuator assembly for controlling a footwear lacing apparatus are discussed. In an example, an actuator assembly can include an actuator frame with a plurality of integrated actuators. The actuator frame is adapted to interconnect elements of the actuator assembly, the actuator frame including a width, a length, and a thickness where the width and length form an exterior surface and an interior surface separated by the thickness. The plurality of actuators are integrated into the actuator frame, each actuator of the plurality of actuators including an actuator head extending from the exterior surface and a button interface extending from the backside of the actuator head through the interior surface.

Abstract: A key assembly includes a bottom plate, a keycap disposed on the bottom plate, an elastic member disposed between the bottom plate and the keycap, a link member, and a protruding member. The keycap has an inner surface facing the bottom plate and includes a link member pivoting portion protruding from the inner surface. The link member pivoting portion has a pivot hole and an opening communicating with the pivot hole and away from the inner surface. A size of the opening is smaller than a size of the pivot hole. The link member is rotatably disposed in the pivot hole. The protruding member is disposed between the inner surface of the keycap and the link member. The link member is supported by the protruding member and contacts a part of the link member pivoting portion near the opening on a wall surface surrounding the pivot hole.

Abstract: A key structure includes 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.

Abstract: This disclosure relates to a key module including a base, a first pivotable frame, a second pivotable frame and a keycap. The base includes two assembly frames. Each of the assembly frames includes an engagement portion and two guide portions. The engagement portion is connected to and located between the guide portions. The first pivotable frame is engaged with the engagement portion by being guided by the guide portions of the assembly frames. The second pivotable frame is engaged with the engagement portion by being guided by the guide portions of the assembly frames. The keycap includes a press part, a first engagement part and a second engagement part. The first engagement part and the second engagement part are connected to the press part. The first pivotable frame is engaged with the first engagement part, and the second pivotable frame is engaged with the second engagement part.

Abstract: In one example, a keyboard device may include a base plate, a pivoting support fixedly disposed on the base plate and having a recess portion, a key cap support having a shaft portion rotatably received in the recess portion, a rolling element disposed between the shaft portion and the pivoting support, and a key cap assembled to the key cap support.

Abstract: Embodiments disclosed herein describe a base, an operation unit that moves in a contacting/separating direction with respect to the base in response to an external force, and a pair of link members turnably coupled to each other by a coupling portion and configured to guide movement of the operation unit in the contacting/separating direction. The pair of link members includes a first curved portion and a second curved portion that are supported on the base, and a first rotary spindle and a second rotary spindle that are supported on the operation unit. When the operation unit moves in the contacting/separating direction with respect to the base, the first curved portion and the second curved portion slide with respect to the base in a direction substantially perpendicular to the contacting/separating direction and in a direction substantially perpendicular to a turning shaft of the pair of link members.

Abstract: A keyswitch includes a base, a keycap, a lift mechanism, a touch circuitry portion, and an outer covering layer. The keycap is connected to the base through the lift mechanism so as to move up and down relative to the base. The touch circuitry portion is disposed on the top surface of the keycap. A connection circuitry portion extends from the touch circuitry portion. The outer covering layer covers the touch circuitry portion and at least a portion of the connection circuitry portion. Thereby, the keyswitch can provide touch function without excessively increasing the whole thickness of the keyswitch. A keyboard includes a plurality of the keyswitches and therefore can provide touch function without excessively increasing the whole thickness of the keyboard.

Abstract: A thin keyboard apparatus includes a base plate and a supporting unit. The base plate has a plate body which is formed with four retaining openings and four retaining members. Each retaining opening is bordered by a peripheral edge which has first and second edge sections extending along two different and intersecting directions. Each retaining member has an upper wall, a first connecting wall interconnecting the upper wall and the first edge section, a second connecting wall interconnecting the upper wall and the second edge section, and a broken hole dividing the first edge section from the second edge section. The supporting unit is slidably pivoted to the retaining members.

Abstract: A reaction force generating member includes: a first dome that gives a reaction force to an operation member according to the depression of the operation member; and a second dome that includes a hemispherical bowl part disposed inside the first dome, and a projection projecting downward from the center of the bowl part and depressing a switch disposed below the operation member.

Abstract: A key structure includes a frame member, a keycap and a stabilizer bar. The keycap includes first and second clamping members. The first clamping member includes a first upper stopping part, a first lower stopping part and a first lateral stopping part. The second clamping member includes a second upper stopping part, a second lower stopping part and a second lateral stopping part. The stabilizer bar includes a shaft part, a first leg part and a second leg part. The shaft part is received within a hook of the frame member. The first leg part is received within the first clamping member. The second leg part is received within the second clamping member. The first lateral stopping part is pushed against the first leg part along a first direction. The second lateral stopping part is pushed against the second leg part along a second direction.

Abstract: A key includes a substrate, a keycap, a connection component, and protruding structures. The connection component includes a first connection member and a second connection member, and the first connection member and the second connection member are between the substrate and the keycap. The protruding structures are disposed on the upper surface of the first connection member and disposed on the upper surface of the second connection member. When the keycap is pressed to a pressed position, the protruding structures on the first connection member and on the second connection member abut against the bottom surface of the keycap, so that a gap is formed between the keycap and the connection component. Therefore, the bottom surface of the keycap does not contact the upper surface of the first connection member and the upper surface of the second connection member so as to prevent from generating keystroke noises.

Abstract: A keyboard device includes a base plate and a key structure. The base plate includes a first coupling part. The first coupling part includes a first locking hole. The key structure includes a keycap, a stabilizer bar and a first connecting element. The stabilizer bar is arranged between the keycap and the base plate. The stabilizer bar includes a transverse bar part and a first hook part. The transverse bar part is pivotally coupled to the keycap. The first hook part is penetrated through the first locking hole of the first coupling part. The first connecting element includes a first supporting structure. The first supporting structure is arranged between the first hook part of the stabilizer bar and the base plate. The first hook part is supported by the first supporting structure. Consequently, the first hook part is contacted with an inner wall of the first locking hole.

Abstract: A keyswitch structure includes a base plate, a keycap, and two supports connected to the base plate and the keycap. The keycap is movable relative to the base plate through the two supports. The support is pivotally connected to the base plate through a pivotal connection structure that includes a guiding slot and a protruding shaft oppositely disposed on the support and the base plate. The guiding slot has an opening and an indentation portion. The opening is located at an upper end of the guiding slot. The protruding shaft enters the guiding slot from the opening to rotatably fit in the indentation portion, so that the support is pivotally connected to the base plate.

Abstract: A key structure includes a keycap and a scissors-type connecting element. The scissors-type connecting element is connected with the keycap. The scissors-type connecting element includes an inner frame and an outer frame. A first end of the inner frame is connected with the keycap. The outer frame is connected with the inner frame and swingable relative to the inner frame. A first end of the outer frame is connected with the keycap and located near a second end of the inner frame. A second end of the inner frame includes a first protrusion. A first end of the outer frame includes a second protrusion near the first protrusion. The first protrusion includes a first knocking surface. The second protrusion includes a second knocking surface. While the keycap is pressed down, the first knocking surface and the second knocking surface knock on each other.

Abstract: Key assemblies having a foldable stabilizer are disclosed. The stabilizer can be positioned under a keycap to help guide the keycap and limit rotation or movement when the key is pressed. The stabilizer can have a pointed-star shape with multiple folding axes and can have multiple points of connection or linkage to the keycap or other surrounding components. The stabilizer can unfold or flatten as the keycap is pressed and can fold as the keycap is raised.

Abstract: A keyswitch structure includes a keycap, a base, and two supports pivotally connected to each other relative to a rotation axis and connected to and between the keycap and the base. One of the supports includes a first shaft recess, a first shaft portion, and a division slot formed therebetween; the other support includes a second shaft recess, a second shaft portion, and a division wall therebetween. The two supports are pivotally connected relative to the rotation axis by the first shaft portion and the second shaft portion rotatably disposed in the first shaft recess and the second shaft recess respectively. Therein, the division wall is inserted into the division slot. The keycap can move up and down relative to the base through the two supports.

Abstract: What is presented is a key module for a keyboard. The key module includes a first wing element and a second wing element for guiding a movement of the key module upon actuation. Each wing element includes a bar, a first arm and a second arm. The arms extend away from the bar. A mounting portion is formed on the bar. A first bearing portion for bearing the wing element is formed on the first arm. A second bearing portion for bearing the wing element is formed on the second arm. The first wing element and the second wing element are mechanically coupleable to each other. The key module also includes at least one spring element for providing a reset force upon actuation of the key module. The at least one spring element is mountable to the mounting portion of the first wing element and the mounting portion of the second wing element. The key module further includes a support element for supporting the wing elements.