Abstract: An operating device includes: an operating section that rotates about a predetermined axis; and a shaft part to move integrally with the operating section. The shaft part has a first end and a second end projected in directions opposite from each other along the axis. A guide regulates movement of the shaft part in a radial direction. A first regulation part specifies a position of the shaft part in a thrust direction by contacting the first end of the shaft part. A second regulation part is press-contacted to the second end, such that the first end of the shaft part is made to contact the first regulation part. A locking part is arranged integrally with the second regulation part, and restricts the shaft part from separating from the guide, by contacting the second end.

Abstract: A key structure includes a base plate, a triggering element, a keycap and a scissors-type connecting element. The base plate includes an open-type hook and a bulge. The scissors-type connecting element includes a first frame and a second frame. The first frame includes a first base post and an elastic contact part. Due to the structure of the open-type hook, the first frame can be easily assembled with the base plate. Moreover, it is not necessary to retain the gap between the first base posit and the open-type hook. While the first frame is swung, the elastic contact part is pushed by the corresponding bulge. Consequently, the first base post is not detached from the base plate.

Abstract: A key assembly including a base plate, a keycap, and at least one balance link. The balance link is disposed between the base plate and the keycap, the balance link having a top lever and two side levers, wherein the two side levers being connected to the top lever at both ends thereof, two ends of the two side levers away from the top lever being connected to the base plate, the top lever being connected to the keycap. The top lever and/or the two side levers include a plastic portion, the parts of the top lever and the two side levers other that the plastic portion being made of metal such that the balance link is a composite structure. The balance link contacts at least one of the keycap and the base plate via the plastic portion.

Abstract: The present invention relates to a keyboard, including: a key, a switch circuit board, and a base plate, and the key includes a keycap and a balance bar. The keycap includes a first hook and a second hook, and the first hook is disposed on an inner surface of the keycap and is located on an outer side of the keycap. The second hook is disposed on the inner surface of the keycap and is located in a central area of the keycap. The balance bar is disposed below the keycap and is fastened in a first opening of the first hook and a second opening of the second hook. The first opening has a round shape, and the second opening has an elliptic shape.

Abstract: A key switch includes a key top; a pair of links that support the key top such that the key top is capable of being elevated and lowered; and a switch that opens and closes a contact point with respect to an elevating operation of the key top, wherein each of the links includes two arms, a connection portion that connects the two arms, two first shafts respectively formed at outer portions of the two arms, and two second shafts respectively formed at inner portions of the two arms, and wherein the key top includes at least four first support portions each being provided with a first guide groove in which the respective first shaft is slidable, and at least four second support portions each being provided with a second guide groove in which the respective second shaft is slidable.

Abstract: The present invention relates to a keyboard, including a first baseboard, a second baseboard, a deformation element, a key cap, and a connecting element. The deformation element is disposed between the first baseboard and the second baseboard and is capable of deforming according to a received voltage signal. The deformation element drags the second baseboard to move in a first direction when the deformation element receives the voltage signal and therefore deforms to be in an extended state, so that the key cap is at a first height. The deformation element pushes the second baseboard to move in a second direction when the deformation element does not receive the voltage signal and therefore deforms to be in a bent state, so that the key cap is at a relatively shorter second height.

Abstract: A key switch includes a base plate, a key top, a pair of link members, and a switch mechanism. The key top is above the base plate. The link members support the key top and operate in an interlocked manner to allow the key top to be lifted and lowered with respect to the base plate. One of the link members includes a projecting portion at a distal end of an arm of the link member. The other one of the link members includes a concave receiving portion at a distal end of an arm of the link member. The projecting portion is rotationally fitted to the concave receiving portion. The switch mechanism is disposed between the base plate and the key top and is configured to open and close a contact portion of an electric circuit in accordance with lifting and lowering operation of the key top.

Abstract: A keyboard includes a base board; transversely moveable boards, each moveably provided on the base board and including a film circuit board, a resilient dome on the film circuit board, a hole member on the film circuit board and adjacent to the resilient dome, openings on the film circuit board, a hollow structure in the film circuit board and directly under the resilient dome, a top contact in the hollow structure, and a bottom contact in the hollow structure and spaced from the top contact; key caps; and scissors-type bridge structures, each including a first frame member, a hollow, rectangular second frame member, and a peg extending out of the first frame member. Top of the scissors-type bridge structure is pivotably secured to the key cap. Bottom of the scissors-type bridge structure is pivotably secured to the base board by inserting through the holes onto the base board.

Abstract: Embodiments describing a method of forming a multi-layered keycap structure are disclosed herein. The method includes forming a first polymer layer on a second polymer layer, wherein the first polymer layer includes a first color and the second polymer layer includes a second color, and coupling the first polymer layer and second polymer layer to a substrate layer such that the first polymer layer is closer to the substrate than the second polymer layer. The method may further include forming a third polymer layer on the second polymer layer; and etching the multi-layered keycap structure to form an opening having a bottom surface that exposes at least one of the first or second color.

Abstract: A keyboard device includes a base plate, plural keys and a membrane circuit board. The keys are connected with the base plate. The membrane circuit board is arranged between the keys and the base plate. The base plate includes at least one elastic vibration absorber corresponding to a keycap or a stabilizer bar of the corresponding key. While the keycap is moved downwardly relative to the base plate, the sound resulted from the collision between the keycap or the stabilizer bar and the membrane circuit board or the base plate is reduced. Consequently, the operating comfort to the user is enhanced.

Abstract: A scissors-type connecting member includes a first frame and a second frame. The first frame includes a rotating shaft. The second frame includes a pivot hole, an entrance and a stopper. After the rotating shaft is introduced into the pivot hole through the entrance, the first frame is pivotally coupled to the second frame. The stopper is located near the entrance or arranged between the entrance and the pivot hole. A position of the rotating shaft is limited between the stopper and the pivotal hole by the stopper. Consequently, the scissors-type connecting member is assembled easily, and the stability of connecting a first frame and a second frame of the scissors-type connecting member is enhanced. Moreover, the present invention also provides a key structure with the scissors-type connecting member.

Abstract: A keyboard device includes a key structure, a switch circuit board, a base plate and a buffering sheath. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap. The base plate includes a connecting structure. The stabilizer bar is penetrated through the connecting structure and connected with the base plate. The buffering sheath is arranged around the stabilizer bar to cover the stabilizer bar. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the buffering sheath, the keyboard device is capable of reducing noise.

Abstract: A keyswitch includes a board having a first magnetic portion and a pivot portion, a cap, a switch, and a support device including a first support member having first and second bodies connected to each other via an elastic connection arm. The first body has first and second end portions connected to the cap and the pivot portion respectively. The second body has a second magnetic portion and a triggering portion. A U-shaped slot is formed around the triggering portion to make the triggering portion form an elastic cantilever arm extending from the second body. When the cap is pressed to make the second magnetic portion away from the first magnetic portion at a specific distance, the triggering portion triggers the switch. When the cap is released, a magnetic force between the first and second magnetic portions drives the second magnetic portion to approach the first magnetic portion.

Abstract: A thin notebook computer mechanical keyboard includes a reinforcement iron plate, a scissor structure, a keycap, a base, a pressing stopper, a spring and a cover. The scissor structure includes first positioning parts vertically and movably clamped on clamping parts of the reinforcement iron plate, and second positioning parts. The keycap includes fastening parts fastened on the second positioning parts. When the keycap is pressed to a certain extent, an action between a hand touch and a fourth terminal produces a sound of an upward impact against the cover. When the keycap is pressed, the scissor structure maintains balance of the whole keycap without catching the keycap, which ensures a favorable touch feeling. A switch can be directly installed on a printed circuit board and pass through the reinforcement iron plate. The scissor structure maintains balance of the keycap, and balanced movement is achieved without falling short of thinning requirements.

Abstract: A keyswitch structure includes a base, a keycap, a frame disposed between the base and the keycap for providing a supporting and moving mechanism to the keycap, and another frame interacting with the former frame through a magnetic attraction force. When the keycap is not pressed, the magnetic attraction force drives the two frames to stably stand on the base and form a stable supporting structure, so that the keycap is located at a farther position relative to the base. When the keycap is pressed with an external force to move toward the base, the magnetic attraction force is overcome so that the two frames depart from each other; that is, the above stable supporting structure is temporarily destroyed. Once the external force applied to the keycap is eliminated, the two frames will form the stable supporting structure again due to the magnetic attraction force.

Abstract: An electronic device disclosed. The electronic device includes a first chassis, a second chassis, and a hinge mechanism that connects the first chassis and the second chassis. The electronic device also includes a cylindrical cam member, a slide member and a movable member that moves in conjunction with a movement of the slide member in the axial direction and which extends from and retracts to an outer surface of the first chassis.

Abstract: A keyboard device includes a key structure, a base plate and a soft fixing element. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap and the soft fixing element. The soft fixing element is disposed on the base plate. The soft fixing element has an accommodation space. The stabilizer bar is inserted into the accommodation space, so that the stabilizer bar is connected with the base plate. After a fixing post of the soft fixing element is penetrated through a fixing hole of the base plate, the fixing post is thermally treated to form the hot melt fixing structure. Consequently, the soft fixing element is firmly fixed on the base plate. Since the metallic stabilizer bar and the metallic base plate are separated by the soft fixing element, the keyboard device is capable of reducing noise.

Abstract: A keyboard device includes a key structure, a switch circuit board, a base plate and a buffering element. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap. The base plate includes a connecting structure. The stabilizer bar is penetrated through the connecting structure and connected with the base plate. The buffering element is coupled with the connecting structure. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the buffering element, the keyboard device is capable of reducing noise.

Abstract: A keyswitch includes a base plate, a cap having a longitudinal axis, a returning device, a support mechanism, and a lifting mechanism including first and second support plates. The first support plate has first and second edges parallel to the longitudinal axis for respectively abutting against the base plate and the cap. The second support plate has third and fourth edges parallel to the longitudinal axis for respectively abutting against the base plate and the cap. The base plate is disposed through openings of the first and second support plates to make the first and second support plates movably connected to the base plate. The returning device drives the cap to a non-pressed position with rotation of the first and second support plates. The support mechanism has first and second support members pivoted to each other to be movably connected to the cap and the base plate.

Abstract: A key cap includes a cap body having a bottom surface, and at least one pivot retainer protrusively disposed on the bottom surface of the cap body. The pivot retainer includes a position-limiting portion, two lateral portions and a shaft-received recess. The lateral portions are connected to the same side of the position-limiting portion, and the shaft-received recess is disposed in the position-limiting portion, and is located between the two lateral portions.

Abstract: A keyboard device includes a base plate, a key and a membrane circuit board. The key is connected with the base plate. The membrane circuit board is arranged between the key and the base plate. The base plate includes a connecting structure. The connecting structure is protruded upwardly and penetrated through the membrane circuit board. The key includes a keycap and a stabilizer bar. The stabilizer bar is pivotally coupled to the keycap. A hook part of the stabilizer bar is penetrated through a corresponding locking hole of the connecting structure. The membrane circuit board includes an extension part. The extension part is extended from a first side of the locking hole to a second side of the locking hole and penetrated through the locking hole. Consequently, the hook part of the stabilizer bar is movable on the extension part of the membrane circuit board.

Abstract: A keyboard device includes a key structure, a switch circuit board, a base plate, a soft covering element and a buffering pad. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap and the soft covering element. The soft covering element is disposed on the base plate. An accommodation space is defined by the soft covering element and the base plate collaboratively. The stabilizer bar is inserted into the accommodation space, so that the stabilizer bar is connected with the base plate. The buffering pad is disposed on the base plate and partially received within the accommodation space. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the soft covering element and the buffering pad, the keyboard device is capable of reducing noise.

Abstract: A keyboard device includes a key structure, a base plate and a switch circuit board. The switch circuit board includes a soft covering element. The key structure includes a keycap and a stabilizer bar. The stabilizer bar is connected with the keycap and the soft covering element. The soft covering element is disposed on the switch circuit board. An accommodation space is formed between the soft covering element and the switch circuit board. The stabilizer bar is inserted into the accommodation space and connected with the switch circuit board. The stabilizer bar and the base plate are made of metallic material. Since the stabilizer bar and the base plate are separated by the switch circuit board, the keyboard device is capable of reducing noise.

Abstract: Disclosed herein is a stack-up for an input device. The stack-up may include a flexible substrate having a switch and a light source. The switch has at least two contacts that are bridged in response to actuation of a dome that is positioned above the switch. The flexible substrate includes a signal trace for detecting the actuation of the dome and a power trace for providing power to the light source.

Abstract: A keyboard device for a portable computer is disclosed. The portable computer includes a main body chassis and a display chassis. The main body chassis contains the keyboard device having multiple keycaps elastically supported to be moved up and down. Coupled to the main body chassis via a hinge, the display chassis contains a display. The main body chassis also includes a key depressing mechanism having a rotating shaft member provided along each of the keycaps and a pressing piece projecting from the outer circumferential surface of the rotating shaft member to the side of the keycap to allow a receiving part provided in the keycap to be depressed downward. The rotating shaft member rotates about the axis to cause the pressing piece to push down the receiving part and, in turn, pushing down and keeping the keycap in a depressed position.

Abstract: 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.

Abstract: A linkage mechanism includes a left wing having two left arms, two left supporting rods that are respectively formed on the left arms, and two left sliding rods that are respectively formed on the left arms, a right wing having two right arms, two right supporting rods that are respectively formed on the right arms, and two right connecting rods that are respectively formed on the right arms, and a hinge unit having two left hinge pins, two right hinge pins, two left hinge holes and two right holes. Each left hinge hole is formed in a respective left arm and is engaged with a respective right hinge pin. Each right hinge hole is formed in a respective right arm and is engaged with a respective left hinge pin.

Abstract: A key structure includes a supporting board, a base board, a pre-stressing force applying assembly, a key cap, a pivot assembly, an attractable element and a magnetic element. The pre-stressing force applying assembly is connected to the supporting board or the base board. When the magnetic element is under the first attractive position, the first end of the attractable element is attracted by the magnetic force and moved to the first attractive position, and the pre-stressing force applying assembly generates a first pre-stressing force; when the magnetic element is under the second attractive position, the second end of the attractable element is attracted by the magnetic force and moved to the second attractive position, and the pre-stressing force applying assembly generates a second pre-stressing force. The first pre-stressing force or the second pre-stressing force reduces the resistance during the sliding of the base board or the supporting board.

Abstract: A key structure includes a first movable plate, a second movable plate, a keycap, a first linkage lever and a second linkage lever. The second movable plate is disposed over the first movable plate. The keycap is disposed over the second movable plate. The first linkage lever is connected with the keycap and the first movable plate. The second linkage lever is connected with the keycap and the second movable plate. While the first movable plate is moved in a first direction and the second movable plate is moved in a second direction, the first linkage lever and the second linkage lever are moved in different directions, so that a height of the keycap is reduced.

Abstract: A key switch device includes: a key top that includes an operating surface; a pair of link members that is interlocked with each other to move the key top upward and downward; a frame member that includes a leg portion extending downward and a flange portion provided at an end of the leg portion, and pivotably supports the pair of the link members; and a support plate that includes a through hole through which the leg portion and the flange portion penetrate, and a projection portion projecting upwardly from a part of an outer periphery of the through hole toward an inside of the through hole.

Abstract: A key structure includes a carrying body, a frame body, a keycap and at least two independent connecting members. The frame body is disposed on the carrying body and forms plurality of sliding grooves. The keycap has a plurality of cap edges and is disposed with a plurality of pivoting portions. The at least two connecting members are each connected between the keycap and the frame body, corresponding to two of the cap edges opposite to each other. Each connecting member includes a pivoting rod and a sliding rod. Each pivoting rod pivots on one of the pivoting portions, and each sliding rod is slidably limited in one of the sliding grooves. This design has preferred structural strength, smooth pressing movement and reliable pressing contact.

Abstract: A key structure includes a supporting plate, a keycap, a frame and a movable plate. The supporting plate is disposed over the movable plate. The keycap is disposed over the supporting plate. The frame is disposed over the supporting plate and arranged around the keycap. The frame includes a linking element. The linking element is inserted in a groove of the movable plate. While the movable plate is moved, the linking element is moved along the groove in response to the movement of the movable plate and the frame is ascended to a position at the same level with the keycap. Consequently, the top surface of the frame and the top surface of the keycap are collaboratively defined as a flat surface.

Abstract: A keyboard switch, including a base; a static contact; a moving contact; an upper cover; a button; a reset spring; an X-shaped rack structure; and a holding part. The X-shaped rack structure includes a first connecting rack and a second connecting rack. The first connecting rack includes a first balancing lever and two first connecting parts sleeving on the first balancing lever, the second connecting rack includes a second balancing lever and two second connecting parts sleeving on the second balancing lever; opposite surfaces of the two first connecting parts each are provided with one boss, facing surfaces of the two second connecting parts each are provided with one round hole, and the boss is inserted in the round hole so that two ends of the two first connecting racks and two ends of the two second connecting racks are connected to form two X-shaped structures.

Abstract: A key structure includes a base, a triggering element, a keycap and a scissors-type connecting element. The keycap is disposed over the triggering element. When an external force is applied to the keycap, the triggering element is pushed by the keycap. The scissors-type connecting element is connected with the keycap and the base. The scissors-type connecting element includes a first frame and a second frame. The first frame includes a keycap post, a base post and a bulge. The bulge is externally extended from a first end of the first frame and located at a side of the keycap post, and the bulge is protruded from a sidewall of the first frame. Due to the bulge, the structured strength of the keycap post is enhanced.

Abstract: An example device in accordance with an aspect of the present disclosure includes a base housing, display housing, and locking mechanism. The base housing includes a keyboard, and the display housing is pivotably coupled to the base housing. The locking mechanism is to lock key movement of the keyboard based on the display housing being pivoted according to a first range. The locking mechanism is to unlock key movement based on the display housing being pivoted according to a second range.

Abstract: A key supported by a scissor mechanism including interlocking scissor members assembled to mutually pivot along a pivot track. A first scissor member may include a pivot track and an up-stop track and a second scissor member may include at least a first and second extension portion positioned within the pivot track and the up-stop track respectively. When the key is depressed, the first extension portion may slide and at least partially pivot or rotate within the pivot track, and the second extension portion may slide within the up-stop track.

Abstract: A keyswitch module includes a bottom plate, a movable plate, a keycap, and a connecting assembly. The moving plate is stacked with the bottom plate and capable of moving between a first position and a second position relative to the bottom plate. The movable plate moves a horizontal stroke from the first position to the second position. The connecting assembly is operatively connected to the bottom plate and connected to the keycap. A forced portion of the connecting assembly is configured to be moved by a forcing structure of the movable plate to make the keycap move between an opening position and a closing position relative to the bottom plate. When the movable plate is located at the first position, the forcing structure and the forced portion are separated by a distance, and the keycap is located at the opening position.

Abstract: A key structure includes a carrying body, a frame body, a keycap and at least two connecting members. The frame body is disposed on the carrying body, and the frame body is disposed with a plurality of sliding grooves. The keycap has a plurality of cap edges and correspondingly covers the top of the frame body, and the keycap is disposed with a plurality of pivoting portions. The at least two connecting members are independent from each other. The at least two connecting members are connected between the keycap and the frame body, corresponding to the two cap edges opposite to each other. Each connecting member includes a pivoting rod and a sliding rod. Each pivoting rod pivots on each pivoting portion. Each sliding rod is slidably limited in each sliding groove, and the pivoting portions are correspondingly located on the outside of the sliding grooves.

Abstract: A keyboard device includes a base plate, a circuit board and plural keys. The base plate includes plural fixing parts. Each of the plural fixing parts includes two extension structures, an opening and a guiding slot. Each key includes a keycap and a metallic elastic element. The keycap includes plural positioning parts. The base plate includes plural fixing parts. The plural positioning parts are connected with the plural fixing parts, respectively. Each positioning part includes a positioning bulge. The positioning bulge is introduced into the guiding slot of the fixing part through the opening of the fixing part, so that the keycap is fixed on the base plate. When the keycap is depressed, the positioning bulge of the positioning part is moved downwardly within the guiding slot, so that the keycap is moved toward the base plate.

Abstract: A keyswitch includes a board, a cap, and a support device. The support device is disposed between the board and the cap and includes first and second support members movably connected to the cap and the board. A stopping member is formed on one of the first support member and the cap. An elastic member is formed on the other one of the first support member and the cap. When the cap is not pressed, the stopping member abuts against the elastic member to keep the cap at a non-pressed position. When the cap is pressed to a pressed position, the cap and the first support member slide relatively to make the stopping member deform the elastic member. When the cap is released, the elastic member drives the cap and the first support member to slide relatively, so as to move the cap back to the non-pressed position.

Abstract: Multi-functional keyboard assemblies include an array of keys formed from stacked component layers. A top portion of the key may be capable of travelling vertically with respect to a base of the key. The top portion can include a keycap and a circuitry module coupled to the keycap. The keys may be capable of receive at least two distinct types of inputs and/or receiving at least one type of input and providing at least one type of output. Such output may include use of one or more light sources, displays, and/or haptic feedback devices.

Abstract: A pushbutton switch for a switch assembly includes a pushbutton unit and a resilient member. The pushbutton unit includes a mounting seat and a pushbutton that covers the mounting seat. The resilient member is disposed between the mounting seat and the pushbutton, and has an insert connected to the mounting seat and having opposite ends that are spaced apart in an extending direction, and two resilient arms extending respectively from the opposite ends of the insert. Each resilient arm has two contact end sections abutting against the pushbutton and spaced apart in a transverse direction, and is deformed when the pushbutton moves to a contact position so as to generate a restoring force which urges the pushbutton to a non-contact position.

Abstract: An electronic device includes a housing and a button. The housing has a first surface and a second surface opposite to the first surface, and defines a mounting hole passing through the first surface and the second surface. The mounting hole has an inner surface. The button is received in the mounting hole, and includes a metallic keycap and an annular buffer member. The keycap has a peripheral side surface, and defines a receiving groove on the peripheral side surface which extends around the peripheral side surface. The buffer member is composed of flexible material, sleeved on the keycap cap, partially received in the mounting hole, and partially positioned outside of the mounting hole to resist the second surface of the housing.

Abstract: The keyswitch structure uses two linkages form as V-shaped to support a keycap when the keycap is moved up and down. A first linkage and a second linkage are coupled with each other and also coupled with a support on a base respectively in a line contacting way, thereby forming a first axis, a second axis, and a third axis. The third axis is located between the first axis and the second axis. As the keycap is pressed to move downward, the keycap brings the two linkages and the support of the base to have relative rotation movement. Due to the geometric feature between the three axes, part of the linkages between the axes or the support of the base may be caused to slightly deform to provide a resilient restoring force that can move the keycap upward to a position not being pressed.

Abstract: A metallic button includes a metallic keycap and an annular buffer member. The metallic keycap has a peripheral side surface, and defines an annular receiving groove and a notch communicating with the annular receiving groove on the peripheral side surface. The annular receiving groove extends around the peripheral side surface. The buffer member is composed of flexible material, sleeved on the keycap, and partially received in the annular receiving groove and the notch.

Abstract: When an operation body is urged upward by a flat spring and is in a return position, a projection disposed on the operation body is held between opposing positioning portions and the position of the operation body in an X-direction is set. When the operation body is pressed at a position away from a central portion of the operation body in the X-direction, the operation body pivots on one of retaining structures downward. At this time, the projection moves away from the opposing positioning portions, and resistance against a pressing operation can thereby be reduced.

Abstract: A keyboard module includes a first key and a second key. The first key includes a first keycap and a first scissors-type connecting element. The first scissors-type connecting element includes a first outer frame and a first inner frame. The second key includes a second keycap and a second scissors-type connecting element. The second scissors-type connecting element includes a second outer frame and a second inner frame. The first outer frame, the first inner frame and the second inner frame have symmetrical structures. The second outer frame has an asymmetrical structure.

Abstract: A pressing operation device is configured such that a base and an operating body are linked to each other by a link member. A support-side shaft of the link member is rotatably supported by a bearing of the base. The bearing of the base includes a first regulation portion that regulates movement of the support-side shaft of the link member in an ascending direction of the operating body and a second regulation portion that regulates movement of the support-side shaft in a direction intersecting the ascending direction, and is provided with a flat spring portion that presses the support-side shaft against the second regulation portion and the first regulation portion.

Abstract: Keyboards with planar translation effecting mechanisms formed by laminated key guides are disclosed. A key assembly for a keyboard includes a keycap having a touch surface for receiving a press force that moves the keycap from an unpressed position toward a pressed position, the unpressed position and pressed position separated in a press direction and a second direction orthogonal to the press direction. A base is included having a laminated key guide contacting a portion of the keycap to provide a planar translation effecting mechanism to guide the keycap in the press direction and the second direction as the keycap moves from the unpressed position toward the pressed position.

Abstract: A luminous keyboard includes plural bottom-emitting type illumination elements, a sensing module, plural keys, and a light-transmissible supporting plate. As a key is moved toward the sensing module, the sensing module generates a corresponding non-contact key signal. Each bottom-emitting type illumination element is aligned with the corresponding key, and disposed under the corresponding key. The light-transmissible supporting plate is arranged between the plural bottom-emitting type illumination elements and the plural keys. After the light beam provided by each bottom-emitting type illumination element is transmitted through the light-transmissible supporting plate, the light beam is projected to the corresponding key.