Abstract: A key for user input having superior tactile qualities. The key is suspended by a magnetic field force to improve the smoothness of motion. Two compact interleaved members link a keycap to a key base to provide highly precise parallel travel with reduced tilt and flexion, and improved durability.

Abstract: A keyswitch and a keyboard are provided. A top plate of a keycap of the keyswitch, for being pressed and decoration, and a frame including groove bodies, for linking with a supporting mechanism, are separated into two components such that the top plate may be implemented as a plate structure with much thinner thickness while maintaining its strength, and the frame with the groove bodies is attached to the top plate via insert molding or adhering. The frame and the top plate form the keycap, in which the groove bodies at the frame and the top plate form sliding slots or engaging slots in cooperation with the supporting mechanism. The thickness of the keycap can be substantially reduced and meanwhile maintain the necessary stroke of the keyswitch and the strength of the keycap. The keyboard having the keyswitches is made possible for further miniaturized with thinner thickness.

Abstract: A keypad assembly includes a first keypad element including a first frame element, first elastic elements connecting with the first frame element, keycaps swingably connected to the first frame element via the first elastic elements, and pressing elements protruding downward from the keycaps, and a second keypad element including a second frame element, second elastic elements connecting with the second frame element, keycaps swingably connected to the second frame element via the second elastic elements, and pressing elements protruding downward from the keycaps.

Abstract: A keyswitch, disposed on a base plate, includes a keycap and a scissors-like supporting structure. The scissors-like supporting structure is disposed on the base plate and supports the keycap. The scissors-like supporting structure includes a first supporting member and a second supporting member. The first supporting member includes a first engaging shaft and a second engaging shaft respectively engaged with the base plate and the keycap. The second supporting member is pivotally connected to the first supporting member and includes a third engaging shaft and a fourth engaging shaft respectively engaged with the base plate and the keycap. A line connected between the centers of gravity of the first and second engaging shaft is not perpendicular to the first and second engaging shaft. A line connected between the centers of gravity of the third and fourth engaging shaft is not perpendicular to the third and fourth engaging shaft.

Abstract: A key structure of a keyboard of the present invention includes a base board and a scissors structure mounted on the base board. The base board is provided with a groove, and a pair of clasps extends upwards from opposite two sides of the groove. The scissors structure includes a first frame and a second frame rotationally connected with the first frame. One end of the first frame is provided with a first rotation spindle, and the first rotation spindle is rotationally connected with the clasps and abuts against the edge of the groove opposite to the clasps. In the present invention, the first rotation spindle abuts against the edge of the groove, which is good for the first rotation spindle being mounted in position to the clasps while assembling the scissors structure, can avoid side slip, and makes the inner structure of the key more stable.

Abstract: An electronic device includes a housing and a power button assembly mounted on the housing. The housing defines an assembly hole and an assembly portion around the assembly hole, and the assembly portion includes a side wall. The power button assembly includes a pressing button received in the assembly hole, a printed circuit board, and a support plate connected to the printed circuit board. The support plate is fixed on the housing, such that the printed circuit board is positioned opposite the pressing button. The support plate includes a plurality of positioning portions bent towards the printed circuit board along an imaginary outline corresponding to the side wall, respectively, and the positioning portions are inserted in the assembly portion and abut the side wall correspondingly.

Abstract: A keypad assembly includes a support member, a key switch, a keycap and a resilient member. The key switch is fixed on the support member, and includes a triggering portion. The keycap is located opposite to the triggering portion. The support member and the key switch are located between the keycap and the resilient member. The resilient member interconnects the keycap and the support member. The resilient member is elastically deformed via resisting the triggering portion when the key switch is not triggered.

Abstract: A illuminant keyboard device includes a bottom frame having a plurality of latch parts, a plurality of keying units disposed on the bottom frame, a membrane switch interposed between the bottom frame and the keying units, a light guide plate interposed between the membrane switch and the bottom frame, a least a light source disposed on predetermined position of the light guide plate, a plate interposed between the membrane switch and the light guide plate and a light-shielding plate interposed between the membrane switch and the keying units. The light guide plate has a plurality of first holes and the plate has a plurality of second holes, the diameter of each of the first holes is larger than the diameter of each of the second holes.

Abstract: A key structure with a scissors-type connecting member is provided. The scissors-type connecting member includes a first frame and a second frame. The first frame includes a rotating shaft and a pushing bulge. After the first frame is stacked on the second frame, if the second frame may be pushed by the pushing bulge, the second frame is subject to deformation to facilitate combining the first frame and the second frame together.

Abstract: A manually operated switch assembly is disclosed. The switch assembly includes a housing, a switch mechanism, and an actuator assembly. The switch mechanism is housed within the housing and is configured to open or close a circuit upon actuation. The actuator assembly is shiftably supported by the housing and generally includes a depressible actuator and a stability element. The actuator presents an actuator length and serves to actuate the switch mechanism when depressed. The stability element is configured to ensure that the actuator moves substantially uniformly along the actuator length when the actuator is depressed such that actuation of the switch mechanism is facilitated regardless of where the actuator is depressed along the actuator length. The switch assembly may be waterproofed, and be formed, at least in part, by a curable liquid sealant supplied to the switch assembly from a single fluid source.

Abstract: A key structure with a scissors-type connecting member is provided. The scissors-type connecting member includes a first frame and a second frame. The first frame has a bulge. The second frame has a recess. The height of the bulge is smaller than the length of the recess entrance. The length of the recess bottom surface is greater than the length of the recess entrance. After the bulge of the first frame is introduced into the recess of the second frame, since the length of the recess bottom surface is greater than the length of the recess entrance, the possibility of detaching the bulge from the recess during the operation of the scissors-type connecting member will be minimized.

Abstract: The present invention provides a key pad structure for a keyboard. The key pad structure comprises a circuit board, an elastic portion, a key cap and a supporting structure. The elastic portion is disposed on the circuit board that has a plurality of through holes. The key cap is disposed above the elastic portion. Additionally, the supporting structure is partially pivoted within the through holes and below the key cap. The supporting structure allows the key cap to move in a linear up-and-down motion with respect to the circuit board. In detail, when the key cap moves downwards from an initial position, the switch of the circuit board is thus, activated. Then, the key cap moves upwards to return to the initial position from the resilience provided from the elastic portion.

Abstract: A device for the control of an electronic apparatus. The device includes an upper panel upon which a user may exert at least one control action, a lower support armature upon which the upper panel is vertically and movably mounted, a switching breaker configured to be triggered by the upper panel, and an articulated structure configured to hold the upper panel. An axis of actuation of the switching breaker may be arranged at the periphery of a contour of the upper panel, and the articulated structure may include several consecutive shafts, each of which is arranged along an associated edge of the contour of the upper actuation face of the upper panel.

Abstract: An electronic device includes a panel, a button assembly, and a circuit board. The panel defines an opening. The button assembly is mounted to the rear surface of the panel, and includes a button partially received in the opening of the panel, a base plate fixed to the rear side of the button, and a substantially U-shaped balance bar. The button includes a push portion and two protrusions rearwards extending through the base plate. An end of the balance bar is movably connected to the rear side of the base plate, and an opposite end of the balance bar is pivotably connected to the protrusions of the button. The circuit board is fixed behind the button assembly, and includes a switch aligning with the push portion of the button. When the button is pressed, the balance bar restricts the button to just move linearly to the switch.

Abstract: A press key includes: a keycap movable with respect to a base unit; and a magnetic restoring device including a first magnetic member connected to the keycap and disposed between the base unit and the keycap, and a second magnetic member disposed on the base unit. The first and second magnetic members produce a repulsive force therebetween to move the keycap away from the base unit.

Abstract: A keyboard for an electronic device, including a switch plate configured to be in communication with the electronic device, a key cap movably supported above the switch plate, and a translation mechanism operably connected to the switch plate and the keycap. The translation mechanism is configured to translate the key cap vertically relative to the switch plate. The translation mechanism includes a first support and a second support substantially identical to the first support, where the first support and the second support are a rigid material and as the key cap is depressed, the first support and the second support pivot relative to each other to translate the keycap vertically with respect to the switch plate.

Abstract: A keypad assembly includes a support member, a key switch, a rotation member, and a resilient member. The key switch is located on the support member and includes a triggering portion. The keycap is located opposite to the triggering portion. The rotation member is rotatably connected to the keycap. The resilient member includes first resilient hooks latching with the rotation member. The rotation member is rotated relative to the resilient member at an angle when the key switch is not triggered, such that the first resilient hook elastically deforms and provides an elastic torque to the rotation member.

Abstract: A key device includes a plate body, a positioning seat having a through hole, a circuit unit mounted on the plate body, a keycap disposed above the circuit unit, and an elastic member disposed between the circuit unit and the keycap. The circuit unit includes a multi-layered structure, and a resilient tongue provided on one layer of the multi-layered structure and having a free end proximate to the through hole. A support rod is connected to and supports the keycap on the substrate, and has a lower end extending through the through hole. The free end of the resilient tongue extends beneath and abuts against the lower end of the support rod, and pushes upwardly the lower end of the support rod to abut against an edge confining the through hole.

Abstract: Provided is a key switch structure wherein a membrane sheet (7) having a movable contact point (7e) and a stationary contact point (7d) is provided between a housing (5), which supports a key top (1) so as to allow the key top to be pushed downward and a base plate (8). The movable contact point (7e) is brought into contact with the stationary contact point (7d) by a downward push to the key top (1), so that a switch is closed. In the key switch structure, the inside of a device's main body is completely shielded from outside air, and water is completely prevented from entering the inside of the device's main body. A plate (6) provided with a plurality of attachment holes (6g) corresponding to fixing pins (5f) of the housing (5) is provided on the membrane sheet (7), so that the fixing pins (5f) are secured in the attachment holes (6g) of the plate (6).

Abstract: A key structure of a keyboard includes a base plate, a keycap, and an elastic body sandwiched between the base plate and the keycap. The elastic body has a neck portion. One end of the neck portion is provided with a bowl-shaped support toward the base plate, and the other end of the neck portion extends toward the keycap to form a flange. The outer peripheral dimension of the flange is larger than that of the outer peripheral dimension of the neck portion. With the flange being sandwiched between the keycap and the neck portion, the flange can exert an even force to the neck portion even through the keycap is subjected to an uneven external force, thereby preventing the neck portion from inclining or swaying. Thus, the convenience in using the keyboard and the stability during its operation can be improved greatly.

Abstract: An improved key structure, for keyboards, comprises a keycap and a scissor-like assembly disposed above a bottom plate. A membrane sheet containing an electrical circuit is placed on the bottom plate and is provided with a silicone elastomer at a center thereof. A middle plastic plate has first engagement portions and second engagement portions and is placed on the membrane sheet. The scissor-like assembly has engagement members and is pivotally mounted to the first engagement portions and the second engagement portions of the middle plastic plate. The keycap is mounted on the scissor-like assembly. The engagement portions of the middle plastic plate and the engagement members of the scissor-like assembly are configured symmetrically, so that the scissor-like assembly can be pivotally mounted to the middle plastic plate in a direction, being horizontally reversed to its original direction, so as to simplify the operation of assembling parts of the key structure.

Abstract: A button structure includes a key cap, a first supporting member, a second supporting member, an elastomer and a base plate. The first supporting member has a first bending portion and a second bending portion. The second supporting member is cross-connected with the first supporting member. The second supporting member has a third bending portion and a fourth bending portion. The third bending portion passes through the first bending portion and abuts an inside of the first bending portion. The second bending portion passes through the fourth bending portion and abuts an inside of the fourth bending portion. The elastomer below the key cap supports the key cap. The base plate is for supporting the first supporting member, the second supporting member and the elastomer. The key cap is able to move up and down through operations of the first supporting member, the second supporting member and the elastomer.

Abstract: A press key includes: a circuit module; a keycap disposed above the circuit module; and an elastic member disposed between the circuit module and the keycap, and including a bowl portion and a leg portion. The bowl portion has a width larger than that of the leg portion and includes a top open end facing the keycap, a bottom wall opposite to the top open end, a first contact extending upwardly from the bottom wall to contact the keycap when the keycap is pressed, and a second contact extending downwardly from the bottom wall to contact the circuit module when the keycap is pressed. The leg portion extends downwardly from the bottom wall and surrounds the second contact.

Abstract: A key switch device and a keyboard, capable of preventing key-entry noise from rebounding and having a drip-proof effect so as to avoid a contact fault and/or insulation failure. The key switch device includes a switch panel; a key top positioned above the switch panel; a pair of link members positioned between the key top and the switch panel and adapted to interlock with the key top so that the key top may be moved in a vertical direction while maintaining a horizontal posture; and an annular elastic wall member positioned between the switch panel and a membrane sheet and configured to contact opposing surfaces of the switch panel and the membrane sheet, wherein the elastic wall member is arranged along a contour of the key top.

Abstract: A keypad assembly includes a support member, a key switch, a rotation member and a resilient member. The key switch is fixed on the support member, and includes a triggering portion. The keycap is located opposite to the triggering portion. The rotation member is rotatably connected to the keycap. The resilient member includes resilient latching portions latching with the rotation member. The resilient member fixedly interconnects the rotation member and the support member. The rotation member is rotated relative to the resilient member at an angle when the key switch is not triggered, such that the resilient member provides an elastic torque to the rotation member.

Abstract: A keypad assembly includes a support member, a key switch, a keycap, and a resilient member. The key switch is fixed on the support member and includes a triggering portion. The keycap is located opposite to the triggering portion. The resilient member includes a rotation portion and a resilient support portion connected to the rotation portion. The rotation portion is rotatably connected to the keycap and the support member. The resilient support portion is elastically deformed via resisting the support member when the key switch is not triggered, and provides an elastic restoring force to the rotation portion.

Abstract: A lighted keyboard includes transparent, rectangular keys each comprising a bottom stem; scissors shaped structures disposed under the keys, each scissors shaped structure being aligned with the stem and comprising a first frame and a second frame pivotally secured together; an OLED sheet disposed under the scissors shaped structures and comprising units each including a hole; an optically transmissive rubber plate disposed under the OLED sheet and comprising units each including a resilient dome passing through the hole of the unit of the OLED sheet, the resilient dome having a conductive shaft aligned with the stem; a membrane circuit board disposed under the rubber plate and comprising a plurality of contacts each aligned with the conductive shaft; and a rectangular aluminum plate disposed under the membrane circuit board and comprising units each including snapping grooves and a slide guide groove secured to the scissors shaped structure.

Abstract: A key switch structure can include a key top, a link structure, a back plate, a membrane sheet, an elastic member, an arm bar, and a pushing member. The link structure can guide the key top in the pushing direction while the key top is pushed. The back plate can support the link structure. The membrane sheet can include a contact portion arranged on the membrane sheet and connectable, in response to a predetermined pressure, to an electrical contact to form a closed circuit. The elastic member can push and separate the key top from the back plate, and be elastically deformable. The arm bar can movably support the key top, and the arm bar can be supported movably at the back plate. The pushing member can push the link structure while the key top is pushed.

Abstract: A button assembly for an electronic device includes a housing and a button. The housing defines an opening having two latching blocks. The button is received in the opening. The button includes a button body, two opposite engaging blocks, and two arcuate arms. The engaging blocks are formed on opposite sides of one end of the button body, the arcuate arms are formed on opposite sides of another end of the button body. Each arcuate arm forms an archimedean spiral.

Abstract: An electronic device includes a panel, a button assembly, and a circuit board. The panel defines an opening. The button assembly is mounted to the rear surface of the panel, and includes a button partially received in the opening of the panel, a base plate fixed to the rear side of the button, and a substantially U-shaped balance bar. The button includes a push portion and two protrusions rearwards extending through the base plate. An end of the balance bar is movably connected to the rear side of the base plate, and an opposite end of the balance bar is pivotably connected to the protrusions of the button. The circuit board is fixed behind the button assembly, and includes a switch aligning with the push portion of the button. When the button is pressed, the balance bar restricts the button to just move linearly to the switch.

Abstract: A press key includes: a circuit module; a keycap disposed above the circuit module; and an elastic member disposed between the circuit module and the keycap, and including a bowl portion and a leg portion. The bowl portion has a width larger than that of the leg portion and includes a top open end facing the keycap, a bottom wall opposite to the top open end, a first contact extending upwardly from the bottom wall to contact the keycap when the keycap is pressed, and a second contact extending downwardly from the bottom wall to contact the circuit module when the keycap is pressed. The leg portion extends downwardly from the bottom wall and surrounds the second contact.

Abstract: A press key includes: a keycap made of metal; a base board; a circuit board disposed on the base board; an insulating film disposed on the circuit board; and an elastic member disposed between the insulating film and the keycap, the elastic member being pressed toward the circuit board when the keycap is pressed, and being resilient to return the keycap to an original position when the keycap is released. A keyboard including a plurality of the aforesaid press keys is also disclosed.

Abstract: A large key for a keyboard includes a keyboard base, a circuit board, a keycap, an elastic member, and a linkage assembly. The linkage assembly is disposed between the keyboard base and the keycap, and includes: a first link unit having two first link levers that are spaced apart, each of the first link levers being connected between the keycap and the keyboard base; and a second link unit that has two second link levers that are spaced apart, each of the second link levers intersecting one of the first link levers and being connected between the keycap and the keyboard base. The first link unit has a first connection portion connected between and formed as one piece with the first link levers so that the two first link levers can move simultaneously.

Abstract: A link structure can include an outside link member and an inside link member. Shaft holes can be formed in respective inner lateral sides of the outside link member and face each other across a first opening portion. First stopper members can be arranged on the respective inner lateral sides, and each have a first inclined face and a first stopper surface. The outside link member can be elastically deformable based on a pressure applied to the first inclined surfaces that increases a distance between the shaft holes. The inside link member can include a second opening portion, link rotational shafts that are disposed in the shaft holes, and second stopper members each having a second inclined surface and a second stopper surface. The inside link member can be elastically deformable based on a pressure applied to the second inclined surfaces that decreases a distance between the link rotational shafts.

Abstract: A key switch can generate several signals is provided. The key switch includes a key top, a body, a first electronic circuit, a second electronic circuit, and a switch mechanism. Pressing the key top, the switch key generates a first signal while the first electronic circuit is closed by the switch mechanism; the switch key generates a second signal while the second electronic circuit is closed; and the switch key generates a third signal while both the first electronic circuit and the second electronic circuit is closed.

Abstract: Described herein are techniques related to a leveled touchsurface with planar translational responsiveness to vertical travel. Examples of a touchsurface include a key of a keyboard, touchpad of a laptop, or a touchscreen of a smartphone or tablet computer. With the techniques described herein, the touchsurface is constrained to remain in a level orientation during planar translational movement between depressed and unpressed positions along a diagonal line with respect to a vertical axis. Also, with the techniques described herein, a planar-translation-effecting mechanism imparts a planar translation to the touchsurface while it travels vertically (e.g., downward) as the user presses the touchsurface. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A key switch including a base section, a key top, a pair of link members and a switching mechanism. Each link member is provided, at one end region thereof, with a toothed portion meshable with a toothed portion of another link member in a gearing manner and a pivot axle pivotably joined to the base section, and at another end region, with a slide portion slidably engaged with the key top. The base section includes a support plate and a frame member, the frame member being fixedly attached to the upper surface of the support plate. The frame member is provided with a bearing portion pivotably receiving and supporting the pivot axle of each link member. The first end region of each link member is disposed on a lateral side of the frame member and closely to the upper surface of the support plate.

Abstract: A key structure with a scissors-type connecting member is provided. The scissors-type connecting member includes a first frame and a second frame. The first frame includes a rotating shaft and a pushing bulge. After the first frame is stacked on the second frame, if the second frame may be pushed by the pushing bulge, the second frame is subject to deformation to facilitate combining the first frame and the second frame together.

Abstract: A key assembly comprises a contact-responsive switch and a keycap having a plinth extending from an underside surface thereof. A key mat disposed between the keycap and the contact-responsive switch has a recessed area formed therein. This recessed area is sized and configured to receive the keycap's plinth. If desired, an adhesive can physically adhere the keycap to the key mat. By one approach, the key assembly also comprises a substantially-planar elastic layer disposed between the keycap and the contact-responsive switch. If desired, this elastic layer and the aforementioned key mat are integrally coupled to one another. By one approach this elastic layer has at least one opening disposed therethrough. This opening (or these openings) can be disposed at least in part in common with the aforementioned recessed area of the key mat.

Abstract: An uniformly self-luminous keyboard device comprises a housing and a keyboard unit. The housing includes an upper casing and a lower casing, which can be assembled together. After the upper casing and the lower casing are assembled together, an accommodation space is formed therebetween. The upper casing has an opening interconnecting the accommodation space. The keyboard unit is arranged in the accommodation space and includes a plurality of press members passing through the opening and moved by a force to have a displacement, and a baseplate supporting the press members. A light conduction space is formed between the baseplate and the lower casing. A light emitting unit is arranged inside the light conduction space. The height of the light conduction space decreases with the distance to the light emitting unit, whereby light is uniformly distributed over the bottom of the keyboard unit. Thus is achieved the uniformly self-luminous keyboard device.

Abstract: A keyswitch structure includes a bottom board, a circuit board disposed on the bottom board, a resilient member, a key cap and two supporting members. The bottom board is formed with two first holes spaced apart from each other. The key cap is located over the bottom board, and includes two pivoting portions that are spaced apart from each other. Each supporting member has an end pivoted to a respective one of the pivoting portions of the key cap, and an opposite end pivoted to the bottom board. When the key cap is moved toward the bottom board and presses the resilient member, each of the supporting members engages at least partly a corresponding one of the first holes, and the resilient member triggers the circuit board so as to generate a corresponding signal.

Abstract: A light-emitting keyboard is disclosed, which comprises: a light guide plate, configured with a light entrance surface, a light emitting surface and a via hole; a light source, disposed next to the light entrance surface of the light guide plate; a frame, disposed on the light emitting surface of the light guide plate; an opaque material disposed on the via hole. With the aforesaid structure, light from the light source can be prevented from being emitting out from the via hole and thus can be evenly emitted out of the light guide plate.

Abstract: A push button-type switch device includes a pair of fixed contacts, an operable member to be pushed, an actuating member elastically deformable upon the operable member being pushed, a movable contact which short-circuits the pair of fixed contacts due to elastic deformation of the actuating member, and a limiting part arranged to limit a direction in which the operable member moves and making the operable member move in a fixed orientation. The limiting part includes a pair of link members that engage with each other, one ends of the link members rotatably supported by the base portion, and the other ends thereof slidably supported by the operable member. This produces a good click irrespective of a position where the operable member is operated.

Abstract: A power switch module includes a printed circuit board having a switch, a support plate engaging the printed circuit board, a control to activate the switch, and an elastic member fixed to the support plate and positioned between the printed circuit board and the control. The elastic member has a plurality of resisting portions thereon to elastically resist the control. One of the elastic member and the control has a plurality of hook portions, and the other has a plurality of latching portions engaging with the hook portions.

Abstract: A keyboard can power a computer on or off. A switch arranged on the keyboard receives power on or off operations. A control chip in the keyboard outputs control signals to a microcontroller according to the power on or off operations. The microcontroller actuates a switch circuit to make a control terminal of a motherboard of the computer power on and off the computer.

Abstract: A key structure with a scissors-type connecting member is provided. The scissors-type connecting member includes a first frame and a second frame. The first frame has a bulge. The second frame has a recess. The height of the bulge is smaller than the length of the recess entrance. The length of the recess bottom surface is greater than the length of the recess entrance. After the bulge of the first frame is introduced into the recess of the second frame, since the length of the recess bottom surface is greater than the length of the recess entrance, the possibility of detaching the bulge from the recess during the operation of the scissors-type connecting member will be minimized.

Abstract: A back lighted membrane keyboard includes a key housing, a membrane, a key support plate, a membrane circuit board, an insulative plate, a light guide membrane plate, and a base plate. The key housing, the membrane, the key support plate, the membrane circuit board, the insulative plate, and the light guide membrane plate are aligned by inserting stems thereinto. Eventually, these components are subjected to ultrasonic welding to be bound together.

Abstract: A key switch device including a key top; a pair of link members connected to the key top and interlocked with each other to guide a vertical motion of the key top; a switch mechanism including a membrane sheet switch capable of opening and closing a contact section of an electrical circuit in accordance with the vertical motion of the key top; a flexible thin film sheet attached to the membrane sheet switch; and a housing attached to the thin film sheet, the housing adapted to connect the link members to the thin film sheet.

Abstract: A key structure of a keyboard includes a cap having a cover and a key post protruded under the cover, a key base which has a base board, restraining posts and a guiding post protruded on the base board with being arranged and spaced to surround a receiving space thereamong, and a resilient dome with a recessed passageway mounted between the cover and the base board to receive the key post and the posts in the passageway. The key post includes a base pillar and guiding ribs arranged around the base pillar. A guiding channel is opened in an inside of the guiding post to communicate with the receiving space and passes through a top of the guiding post. The key post is movably inserted in the receiving space with one guiding rib being slidably inserted in the guiding channel and the other guiding ribs being resisted against the respective restraining posts.

Abstract: A key structure of a keyboard, comprising: a backplane and a plurality of key caps. The backplane is concaved a plurality of grooves. A frame is deposed on the groove, and outside of the frame two fixed bases and two positioning columns are correspondingly deposed on the opposite sides. A clamp is deposed on the fixed base. A link bar, consists of a cross bar and two struts. The cross bar and the struts are mutually perpendicular and shown as an upside-down U shape. A key cap, in which a convex column is extended from the inside of the key cap, and two clips are protruded respectively on the opposite sides of the convex column, as well as a slot is deposed on the clip. The clips are adapted to position the cross bar of the link bar to a clamp of a fixed base on the backplane. And two struts are adapted to be held by the positioning column, so that the two struts only can be moved up and down and will not mismatch.