TW201537601A - Keyswitch structure - Google Patents

Abstract

A keyswitch structure includes a base plate, a key cap disposed over the base plate, and a link member connected between the key cap and the base plate for supporting the key cap to move vertically with respect to the base plate. The link member includes a plastic inner leg and a metal outer leg pivotally connected to each other. The plastic inner leg provides the assembly flexibility and the metal outer leg enhances the rigidity of the link member. The projection of the metal outer leg on the plane where the base plate lies substantially covers the projection of the plastic inner leg on the plane where the base plate.

Description

Button structure

The present invention generally relates to a key structure, and more particularly to a key structure having a lifting unit.

Conventional button structures typically utilize a recovery unit such as an elastomer to provide the power to rise and return after the keycap is pressed, and to support the stability of the keycap lift by the scissor support as a lifting mechanism. However, the conventional scissor support member is formed by the inner bracket and the outer bracket, and the inner bracket and the outer bracket must have a plurality of corresponding connecting mechanisms. Therefore, the inner bracket and the outer bracket of the conventional scissor support are usually manufactured by injection molding from a plastic material to improve the manufacturability and assembly flexibility of the component. However, as the requirements for thinning and thinning are becoming higher and higher, the structural strength of the scissor-type support member made of a plastic material gradually fails to match the user's pressing habits, and the user's requirements for press stability cannot be satisfied.

Therefore, how to improve the manufacturability and assembly flexibility of the components and the stability of the pressing operation while increasing the overall structural strength of the lifting support member has become the focus of the development of the button structure.

An object of the present invention is to provide a button structure which is made of an inner bracket and an outer bracket of a scissor-type support structure by different materials, which can not only strengthen the structural strength but also retain the assembled projectile. Sex, and thus improve the overall driving force of the button.

Another object of the present invention is to provide a button structure that forms a pivot fulcrum by linearly contacting the lifting unit bracket with the bottom plate to enhance the stability of the key cap for lifting movement relative to the bottom plate.

Another object of the present invention is to provide a button structure that is in contact with a key cap by an arcuate curved surface formed by an S-shaped extension of a lifting unit bracket to enhance the sliding guidance of the relative movement of the bracket and the keycap. The pressing movement is smoother.

Another object of the present invention is to provide a button structure that is in contact with the key cap by the bent surface and the arc end surface of the lifting unit bracket to enhance the sliding movement of the relative movement of the bracket and the key cap to make the pressing motion smoother. And improve the assembly of the bracket and the keycap.

Still another object of the present invention is to provide a button structure which is formed as a positioning guide surface by a guiding surface formed on a side edge of a lifting unit bracket to improve assembly convenience of the bracket and the keycap.

Another object of the present invention is to provide a button structure which increases the rigidity of the scissor lift unit by the added joint bracket and improves the structural strength of the entire button structure.

Another object of the present invention is to provide a button structure that integrates the triggering portion of the trigger switch layer on the lifting unit to make the design of the pressing hand source more elastic to enhance the pressing feel.

In one embodiment, the present invention provides a button structure including a bottom plate, a key cap, and a lifting unit, wherein the key cap is disposed above the bottom plate, and the lifting unit is coupled between the key cap and the bottom plate to support the key cap relative to the bottom plate Lifting movement, and the lifting unit comprises an inner plastic bracket and an outer metal bracket, and the outer metal bracket is pivotally connected with the inner plastic bracket, wherein the inner plastic The bracket provides the assembly flexibility of the lifting unit and the outer metal bracket increases the overall rigidity of the lifting unit; the outer metal bracket is larger than the inner plastic bracket, so that the projection range of the outer metal bracket on the plane of the bottom plate substantially covers the plane of the inner plastic bracket on the bottom plate. Projection range.

In one embodiment, the outer metal bracket is a first closed frame and the inner plastic bracket is a second closed frame. The first closure frame substantially surrounds the second closure frame when the keycap is moved to the lowest position relative to the bottom plate.

In an embodiment, the outer metal bracket has a shaft hole, and the inner plastic bracket has a pivot coupling shaft hole, so that the outer metal bracket and the inner plastic bracket are rotatably pivoted, and the pivot has a substantially rectangular shape to increase the pivot. Strength. In one embodiment, the pivoting has a leading end, wherein the leading end includes a guiding ramp to guide the pivot into the shaft bore.

In one embodiment, the bottom plate has a coupling member protruding from the upper surface of the bottom plate, and the outer metal bracket has a side flap, wherein the side flap includes a first flap portion and a second flap portion, the first flap portion and the second wing portion The sheets are respectively adjacent to two adjacent sides of the coupling member, and the lower surface of the first flap portion is coupled to the lower surface of the second flap portion to constitute a flat lower surface. In another embodiment, the bottom plate has a coupling member protruding from the upper surface of the bottom plate, and the outer metal bracket has a side flap, wherein the side flap includes a first flap portion and a third flap portion, the first flap portion and the third flap portion There is an opening between the fin portions, and the coupling member extends through the opening, and the first fin portion and the third fin portion are respectively adjacent to opposite sides of the coupling member.

In one embodiment, the bottom plate has a bottom edge at the adjacent coupling member, and the lower surface of the side flap is in linear contact with the bottom edge of the bottom plate to form a rotating shaft for supporting the lifting and lowering movement of the keycap relative to the bottom plate, so that the outer metal bracket is opposite to the bottom edge of the bottom plate Turn. In another embodiment, the coupling member has a hook top, wherein the top of the hook has a curved lower surface to contact the upper surface of the first flap portion of the side panel as an arcuate contact surface.

In one embodiment, the key cap has a sliding groove formed on the lower surface of the keycap, wherein the sliding slot has an upper sliding surface and a lower sliding surface; the outer metal bracket is bent from the end edge of the keycap end to form an S-shaped extension, S The extension portion has an upper bending surface and a lower bending surface, and the lifting unit is in contact with the upper sliding surface and the lower sliding surface by the upper bending surface and the lower bending surface respectively as a sliding guiding surface, and the upper bending portion The center of curvature of the face and the lower bend face is disposed along the direction in which the chute extends so as to reduce the thickness of the S-shaped extension in the direction in which the vertical chute extends.

In one embodiment, the key cap has a sliding groove formed on the lower surface of the keycap, wherein the sliding slot has an upper sliding surface and a lower sliding surface; the outer metal bracket is bent downward from the end edge of the keycap end to form a curved surface and The side edge of the keycap end is bent downward to form a bent portion, the bent portion has a circular arc end surface, the curved surface serves as a sliding upper guiding surface, and the arc end surface serves as a sliding lower guiding surface, and the upper guiding The surface slides on the upper sliding surface, and the lower guiding surface slides on the lower sliding surface.

In one embodiment, the outer metal bracket is further bent downward from the side edge of the keycap end to form a guiding surface as a positioning guiding surface when the lifting unit and the keycap are assembled.

In one embodiment, the button structure further includes a switch layer, and the outer metal bracket further has a trigger portion, wherein the trigger portion protrudes downward from an edge of the bottom end of the outer metal bracket to trigger the switch layer in response to the lifting movement of the key cap.

In another embodiment, the present invention provides a button structure including a bottom plate, a key cap, and a lifting unit, wherein the key cap is disposed above the bottom plate, the key cap has a sliding groove formed on the lower surface of the key cap; and the lifting unit is connected to the key Between the cap and the bottom plate, the support key cap is lifted and moved relative to the bottom plate, and the lifting unit comprises a first bracket, the first bracket has an S-shaped extension portion, and the S-shaped extension portion is from the end edge of the keycap end of the first bracket The outer extension, the S-shaped extension has two bending faces respectively contacting the lower surface of the keycap and the sliding groove as a sliding guiding surface, and the center of curvature of the two bending surfaces It is arranged along the sliding direction of the first bracket.

In another embodiment, the present invention provides a button structure including a bottom plate, a key cap, and a lifting unit, wherein the key cap is disposed above the bottom plate, the key cap has a sliding groove formed on the lower surface of the key cap, and the lifting unit is coupled to the key cap And the bottom plate, the support key cap is lifted and moved relative to the bottom plate, the lifting unit comprises a first bracket, the first bracket has a bending surface, and the bending surface extends downward from the end edge of the key end of the first bracket, The first bracket has a bent portion, and the bent portion is disposed on one side edge of the end edge of the key cap end, the bent portion has a circular arc end surface, and the bent surface and the arc end surface serve as guides for sliding and assembly surface.

In one embodiment, the first bracket further has a guiding surface, wherein the guiding surface extends downward from the side edge of the keycap end to serve as a positioning guiding surface when the lifting unit is assembled with the keycap.

In one embodiment, the lifting unit further includes a second bracket and a third bracket, wherein the second bracket and the third bracket are rotatably pivotally connected by the shaft hole and the pivot, and the pivot has a substantially rectangular shape to increase the pivot. strength. In another embodiment, the pivoting has a leading end, wherein the leading end includes a guiding ramp to guide the pivot into the shaft bore.

In one embodiment, the lifting unit further includes a second bracket, wherein the second bracket and the first bracket are rotatably pivotally connected by the shaft hole and the pivot to form a scissors structure, and the pivot has a substantially rectangular shape to increase the pivot. Strength.

In another embodiment, the lifting unit further includes a second bracket, wherein the second bracket is movably coupled to the first bracket to form a V-shaped structure, and the first bracket is caused when the keycap moves up and down relative to the bottom plate It slides relative to the edge of the bottom plate.

In one embodiment, the present invention provides a button structure including a bottom plate, a first coupling member, a key cap, and a lifting unit, wherein the bottom plate has a first bottom plate edge, and the first coupling member protrudes The first coupling member has a first hook top and a first hook upright portion, the first coupling member is adjacent to the first bottom plate edge; the key cap is disposed above the bottom plate; and the lifting unit is connected to the key Between the cap and the bottom plate, and the lifting unit comprises a first bracket, the first bracket has a first side flap, the first side flap has a first opening, wherein the first hook upright portion is located in the first opening, and the first side flap The lower surface is in linear contact with the edge of the first bottom panel to form a first pivot that supports the lifting and lowering movement of the keycap relative to the bottom plate such that the first bracket is rotatable relative to at least the edge of the first bottom panel.

In one embodiment, the first side panel includes a first wing portion and a second wing portion, wherein the first wing portion and the second wing portion are respectively adjacent to two adjacent sides of the first hook upright portion, first The lower surface of the flap portion joins the lower surface of the second flap portion to form a first flat lower surface as a lower surface of the side flap in linear contact with the edge of the first bottom panel.

In another embodiment, the first side panel further includes a third wing portion, wherein the first opening is located between the first wing portion and the third wing portion, and the first wing portion and the third wing portion are respectively adjacent to each other The first hook hooks on opposite sides of the upright portion. In one embodiment, the first opening is a first closed opening such that the first side flap surrounds the first coupling.

In one embodiment, the lifting unit further includes a second bracket and a third bracket, wherein the second bracket and the third bracket are rotatably pivoted, and the first bracket is larger in size than the second bracket and the third bracket, so that the first The projection range of the bracket on the plane of the bottom plate substantially covers the projection range of the second bracket and the third bracket on the plane of the bottom plate.

In one embodiment, the lifting unit further includes a second bracket, wherein the middle portion of the second bracket and the middle portion of the first bracket are rotatably pivotally connected by the shaft hole and the pivot to form a scissor structure. In one embodiment, the pivoting system has a leading end, wherein the leading end includes a guiding ramp to guide the pivot into the shaft bore.

In another embodiment, the lifting unit further includes a second bracket, wherein the bottom end of the second bracket is movably coupled to the bottom end of the first bracket to form a V-shaped structure. In one embodiment, the first bracket bottom end has a first left bottom end and a first right bottom end, and the second bracket bottom end has a second left bottom end and a second right bottom end, wherein the first left bottom end is coupled Connected to the lower left bottom end, the first right bottom end is coupled above the second right bottom end.

In an embodiment, the button structure of the present invention further has a second coupling member protrudingly disposed on the upper surface of the bottom plate, wherein the second coupling member has a second hook top and a second hook upright portion, and the second hook The top and the top of the first hook face each other.

In one embodiment, the bottom plate further has a second bottom plate edge, the second coupling member is adjacent to the second bottom plate edge, the second bracket has a second side panel, and the second side panel has a second opening, wherein the second hook is located at an upright portion a second opening, and a lower surface of the second side panel is in linear contact with the edge of the second bottom plate to form a second rotating shaft supporting the lifting and lowering movement of the keycap relative to the bottom plate, so that the second bracket can be rotated relative to the edge of the second bottom plate And slide.

In one embodiment, the second side panel includes a fourth wing portion and a fifth wing portion, wherein the fourth wing portion and the fifth wing portion are respectively adjacent to two adjacent sides of the second hook upright portion, and The lower surface of the four-blade portion joins the lower surface of the fifth fin portion to form a second smooth lower surface as a lower surface of the side flap in linear contact with the edge of the second bottom panel.

In an embodiment, the second side panel further includes a sixth wing portion, wherein the second opening is located between the fourth wing portion and the sixth wing portion, and the fourth wing portion and the sixth wing portion are respectively adjacent to the first wing portion Two opposite sides of the two hooks of the upright portion. In one embodiment, the second opening is a closed opening such that the second side panel surrounds the second coupling member.

In an embodiment, when the key cap moves up and down relative to the bottom plate, the first bracket Rotating and sliding relative to the edge of the first bottom panel such that the linear region of the surface of the first side panel that makes linear contact with the edge of the first bottom panel changes.

In an embodiment, the button structure of the present invention further includes a switch layer, and the first bracket further has a trigger portion, wherein the trigger portion protrudes downward from the end edge of the bottom end of the first bracket to trigger the switch according to the lifting motion of the key cap Floor.

In another embodiment, the present invention provides a button structure including a bottom plate, a first coupling member, a key cap, and a lifting unit, wherein the bottom plate has a first bottom plate edge; and the first coupling member protrudes from the upper surface of the bottom plate. The first coupling member has a first hook top, the first coupling member is adjacent to the first bottom plate edge; the key cap is disposed above the bottom plate; the lifting unit is connected between the key cap and the bottom plate, and the lifting unit comprises the first bracket, the first bracket A bracket has a first frame body and a first wing portion, the first wing portion is formed from a side surface of the first frame body, the first frame body has a first frame lower surface, and the first wing portion has a first wing piece a lower surface, the lower surface of the first wing portion is connected to the lower surface of the first frame to form a first flat lower surface, and the first wing portion is located below the top of the first hook; the first flat lower surface is in linear contact with the edge of the first bottom plate The first bracket is configured to rotate at least relative to the edge of the first bottom plate to form a first rotating shaft supporting the lifting and lowering movement of the keycap relative to the bottom plate.

In one embodiment, the first fin portion has a side cross section, wherein the side cross section has an upper right end point, a lower right end point, an upper left end point, and a lower left end point, and among the four end points, the first rotating shaft is closest to the lower right end Point, the distance between the top of the first hook and the bottom plate is greater than the distance between the upper right end point and the lower right end point; when the key cap moves up and down relative to the bottom plate, the upper right end point and the lower right end point remain above the first rotating shaft.

In one embodiment, the first fin portion has a first fin portion plane, the first bracket has a first bracket long axis, and the first fin portion plane is substantially parallel to the first bracket long axis.

In one embodiment, the first bracket further includes a second wing portion, the second wing portion is formed on a side surface of the first bracket, and the first wing portion has a lateral dimension larger than a lateral dimension of the second wing portion, and the second wing portion The lower surface connects the lower surface of the first fin portion such that the first flat lower surface includes the first fin portion lower surface and the second fin portion lower surface.

10, 20, 30, 40‧‧‧ button structure

100‧‧‧floor

102a, 102b‧‧‧ openings

110, 120‧‧‧ couplings

122‧‧‧ hook top

122a‧‧‧Shaped lower surface

122b‧‧‧lower surface

123‧‧‧ hook hook upright

123a‧‧‧ Storage groove

150‧‧‧floor

150a‧‧‧Bottom edge

152‧‧‧ card hook

154‧‧‧ card hook

156‧‧‧ coupling

156a‧‧‧ hook top

156b‧‧‧ hook hook upright

170‧‧‧floor

175a‧‧‧ hook top

180‧‧‧floor

180a‧‧‧first floor edge

180b‧‧‧second bottom edge

182‧‧‧first coupling

182a‧‧‧Top of the first hook

182b‧‧‧ first hook hook upright

184‧‧‧Second coupling

184a‧‧‧The top of the second hook

184b‧‧‧Second card hook upright

190‧‧‧floor

190a‧‧‧Bottom edge

192‧‧‧ couplings

192a‧‧‧ hook top

192b‧‧‧ hook hook upright

200‧‧‧Key Cap

210‧‧‧spindle

220‧‧ ‧ chute

221‧‧‧Linked institutions

222‧‧‧Upper sliding surface

224‧‧‧ lower sliding surface

250‧‧‧Key Cap

252‧‧‧ card slot

254‧‧ ‧ chute

280‧‧‧Key Cap

300, 300’‧‧‧ lifting unit

310‧‧‧second bracket

312‧‧‧ pivot

314‧‧‧ Guided end

314a‧‧‧ Guided slope

316‧‧‧ card slot

318‧‧‧ shaft part

320, 320’‧‧‧second bracket

320a‧‧‧ bottom plate end

320b‧‧‧Keycap end

321‧‧‧ guiding surface

322‧‧‧Axis hole

324, 324’‧‧‧ side flaps

324a‧‧‧ openings

324a’‧‧‧ openings

324a1, 324a2‧‧‧ side edge

324b, 324b'‧‧‧ lower surface

324c, 324c'‧‧‧ upper surface

324d‧‧‧top right corner

325‧‧‧ side wall

325a‧‧‧Bend surface

326‧‧‧S-shaped extension

326a‧‧‧Upper bend

326b‧‧‧Bottom bend

328‧‧‧Bending

328a‧‧‧ arc end face

329‧‧‧Trigger

400‧‧‧Switch layer

410‧‧‧through hole

500‧‧‧Response unit

600‧‧‧lifting unit

610‧‧‧First bracket

614‧‧‧Fringe

614a‧‧‧ openings

614b‧‧‧ lower surface

616‧‧‧S-shaped extension

616a, 616b‧‧‧ bend face

620‧‧‧second bracket

622‧‧‧ pivot

624‧‧‧ card slot

626‧‧‧Rotary shaft

630‧‧‧ Third bracket

632‧‧‧Axis hole

634‧‧‧Shaft Department

700‧‧‧ Lifting unit

710‧‧‧First bracket

710a‧‧‧ openings

712‧‧‧First side flap

712a‧‧‧first opening

713a‧‧‧First Fragment

713b‧‧‧Second wing

713c‧‧‧ Third Wing

714‧‧‧first left bottom

714a‧‧‧ stop surface

716‧‧‧ first right bottom

718‧‧‧S-shaped extension

718a, 718b‧‧‧ bend face

720‧‧‧second bracket

720a‧‧‧ openings

722‧‧‧Second side flap

722a‧‧‧ second opening

723a‧‧‧Fourth Fragment

723b‧‧‧ Fifth Flap

723c‧‧‧6th wing

724‧‧‧second left bottom

726‧‧‧second right bottom

726a‧‧‧stop surface

728‧‧‧S-shaped extension

728a, 728b‧‧‧ bend face

810‧‧‧ bracket

810a‧‧‧ openings

812‧‧‧ ‧ frame

812b‧‧‧ Lower surface of the frame

814‧‧‧Face Department

814a‧‧‧ upper surface

814b‧‧‧Face surface

910‧‧‧ wing section

912‧‧‧ upper right endpoint

913‧‧‧ bottom right endpoint

914‧‧‧ upper left endpoint

915‧‧‧Lower lower endpoint

D1‧‧‧ spacing

D2‧‧‧ spacing

L, L’‧‧‧ contact line

1 is an exploded view of a button structure in accordance with an embodiment of the present invention.

2A and 2B are schematic views of the lifting unit of FIG. 1 before and after assembly, respectively.

2C is a partially enlarged cross-sectional view of the shaft member of the first bracket of the lifting unit of FIG. 2A along the Y-axis direction.

3A is a schematic view of the assembly of the lifting unit and the bottom plate of FIG. 1.

3B and 3C are respectively a side elevational and bottom perspective view of a portion of FIG. 3A.

Figure 3D is a partial enlarged side elevational view of the modified embodiment of Figure 3A.

4A and 4B are schematic views of the key cap and the lifting unit of FIG. 1 before and after assembly.

4C and 4D are cross-sectional views showing the relative positions of the key cap and the second bracket when they are actuated along the line A-A of FIG. 4B, respectively.

Figure 5 is an exploded view of a button structure in accordance with another embodiment of the present invention.

6A and 6B are schematic views of the lifting unit of FIG. 5 before and after assembly, respectively.

7A is a schematic view showing the assembly of the lifting unit and the bottom plate of FIG. 5.

Figure 7B is a partially enlarged bottom plan view of Figure 7A.

8A and 8B are schematic views of the key cap and the lifting unit of FIG. 5 before and after assembly.

8C and 8D are cross-sectional views showing the relative positions of the key cap and the second bracket when they are actuated along the line B-B of FIG. 8B, respectively.

9 is a schematic view of a second bracket according to an embodiment of the present invention.

Figure 10 is an exploded view of a button structure in accordance with another embodiment of the present invention.

11A and 11B are respectively a schematic view and a partial enlarged view of the lifting unit of FIG. 10 assembled to the bottom plate.

Figure 12 is an exploded view of a button structure in accordance with another embodiment of the present invention.

13A and 13B are schematic views of the lifting unit and the bottom plate of FIG. 12 before and after assembly.

Figure 13C is a partially enlarged bottom plan view of Figure 13B.

Figure 14 is a side elevational view of the lifting unit of Figure 12 coupled to the keycap.

Figure 15 is a schematic view showing the assembly of a bracket and a bottom plate according to another embodiment of the present invention.

Figure 16 is a cross-sectional view showing the assembly of the bracket flap portion and the bottom plate according to an embodiment of the present invention.

The present invention provides a button structure that can be applied to any push-type input device, such as a keyboard, but is not limited thereto. The button structure of the present invention is designed by the bracket of the lifting unit to increase the structural strength, improve the pressing stability and smoothness, improve the assembly convenience, and increase the design flexibility of the pressing hand source to meet the user's needs. The structure and operation of the components of the key structure of the embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, the key structure 10 of the present invention includes a bottom plate 100, a keycap 200, and a lifting unit 300. The keycap 200 is disposed above the bottom plate 100, and the lifting unit 300 is coupled between the keycap 200 and the bottom plate 100 to support the lifting and lowering movement of the keycap 200 relative to the bottom plate 100. Specifically, the button structure 10 is the bottom plate 100, the lifting unit 300, and the keycap 200 are sequentially stacked from bottom to top, and the bottom plate 100 and the keycap 200 respectively have a coupling mechanism to connect the lifting unit 300 (as will be described in detail later). The button structure 10 also includes a switch layer 400, and the switch layer 400 can be selectively placed above or below the backplane 100 depending on actual design requirements. For example, when the switch layer 400 is disposed above the bottom plate 100, the switch layer 400 may have a through hole 410, so that the connection mechanism of the bottom plate 100 (for example, the coupling members 110, 120) can be connected to the lift unit 300 through the through hole 410. (As shown in Figure 1). In other embodiments, when the switch layer 400 is disposed under the bottom plate 100, the bottom plate 100 may have a corresponding change design (eg, a hole) to allow the switch layer 400 to be triggered when the key cap 200 is moved downward. In addition, the button structure 10 can include a reply unit 500, wherein the reply unit 500 provides a restoring force that the keycap 200 has been pressed but has risen after the user's finger has been released. In this embodiment, the recovery unit 500 is implemented as an elastic body that provides an elastic restoring force, but is not limited thereto. In other embodiments, the reply unit 500 can be implemented as a magnetic element that provides a magnetic force. It should be noted that in the embodiment, although only a single button structure 10 is used for description, when a plurality of button structures 10 are combined into a keyboard, some components of each button structure 10 (for example, the bottom plate 100 and the switch layer 400) can be integrated into A single component to achieve the benefits of reduced manufacturing and assembly costs.

As shown in FIG. 1 , the lifting unit 300 includes a first bracket 320 and a second bracket 310 , wherein the first bracket 320 and the second bracket 310 are rotatably pivoted to form a scissor lift having an X-like shape on the side. structure. Specifically, the second bracket 310 is preferably an inner plastic bracket made of a plastic material (for example, a closed plastic frame), so that the second bracket 310 can be manufactured by using injection molding technology to have a finer connecting mechanism, and at the same time Can be improved by the elastic properties of plastic materials The amount of deformation required to assemble the first bracket 320 and the second bracket 310. The first bracket 320 is preferably an outer metal bracket (for example, a closed metal frame) made of a relatively rigid metal material to increase the first bracket 320 and the second bracket 310. The two brackets 310 are combined to form the overall rigidity of the lifting unit 300, thereby improving the overall driving force of the button structure. The first bracket 320 can be stamped and manufactured by using a metal piece (for example, an iron piece, a steel sheet, or the like) to achieve high manufacturability precision. Moreover, the first bracket 320 has a bottom end 320a and a key end 320b, wherein the bottom end 320a is adjacent to the bottom plate 100, and the key end 320b is adjacent to the keycap 200. In this embodiment, the connection direction of the bottom end 320a and the key end 320b is defined as the X-axis direction, and the extending direction of the long axis of the bottom end 320a or the extending direction of the long axis of the key end 320b is defined as the Y-axis direction. The direction in which the first bracket 320 supports the keycap 200 for lifting and lowering is defined as the Z-axis direction. That is, the X-axis, the Y-axis, and the Z-axis direction are preferably defined in a state in which the first holders 320 are stacked in parallel on the bottom plate 100. It should be noted that, in this embodiment, the second bracket 310 and the first bracket 320 are illustrated as a closed frame, but are not limited thereto. In other embodiments, the second bracket 310 and the first bracket 320 can be designed as an open frame according to actual needs.

As shown in FIGS. 2A and 2B , the first bracket 320 is larger than the second bracket 310 such that the second bracket 310 is pivotally connected to the inner side of the first bracket 320 . Specifically, the size of the first bracket 320 as the outer metal bracket is larger than the second bracket 310 as the inner plastic bracket, so that the projection range of the first bracket 320 on the plane of the bottom plate 100 substantially covers the second bracket 310 at the bottom plate. The projection range of the plane. In other words, when the keycap 200 is moved to the lowest position relative to the bottom plate 100 (ie, when the keycap 200 is pressed to the bottom), the first bracket 320 substantially surrounds the second bracket 310. In this embodiment, the first bracket 320 preferably has a shaft hole 322, and the second bracket 310 correspondingly has a pivot 312. The shaft hole 322 is formed on the side of the first bracket 320 and is bent downward and vertically extending. Wear on hole. That is, the shaft hole 322 is a perforation formed on the side wall of the first bracket 320 extending along the X-axis plane of the X-axis, and the central axis of the shaft hole 322 is parallel to the Y-axis direction. The pivot 312 is a protrusion formed to protrude outward on both sides of the frame of the second bracket 310. That is, the pivot 312 is a post extending from the two sides of the frame of the second bracket 310 in the Y-axis direction. The first bracket 320 and the second bracket 310 are rotatably pivoted by inserting the pivot 312 into the shaft hole 322. It should be noted that in this embodiment, the pivot 312 and the shaft hole 322 are formed approximately in the middle of the length of the first bracket 320 and the second bracket 310 in the X-axis direction, so that the lifting unit 300 has a scissors whose side is similar to the X shape. Support structure, but not limited to this. In other embodiments, the pivotal connection of the first bracket 320 and the second bracket 310 can be designed to be close to the bottom end 320a, and the side surface has a V-shaped lifting structure (as shown in FIG. 12).

In one embodiment, the pivot 312 preferably has a substantially rectangular cross section to increase the strength of the pivot 312. Specifically, the length of the pivot 312 in the X-axis direction is greater than the length in the Z-axis direction so as to increase the strength of the pivot 312 without increasing the overall thickness of the second bracket 310 (ie, the height in the Z-axis direction), thereby reducing the The possibility that the pivot 312 breaks when the bracket 320 is assembled or disassembled with the second bracket 310. Moreover, in an embodiment, the pivot 312 preferably has a guiding end 314, and the guiding end 314 includes a guiding bevel 314a for guiding the pivot 312 into the shaft hole 322. As shown in FIGS. 2A and 2C, the end of the pivot 312 is designed to have an arcuately shaped leading end 314 to facilitate pivoting of the pivot 312 in the shaft bore 322. Furthermore, the end of the guiding end 314 has a guiding bevel 314a that is inclined from the outer edge of the pivot toward the pivot axis. In other words, the guiding ramp 314a causes the end of the leading end 314 of the pivot 312 to have a tapered radial distance in the axial direction (ie, the Y-axis direction). As shown in FIG. 2A, when the first bracket 320 and the second bracket 310 are to be assembled, the second bracket 310 is preferably disposed below the first bracket 320, and then the assembly machine directly applies a force to press the first bracket. The stacking structure formed by the 320 and the second bracket 310 is (1) guided by the guiding slope 314a and matched with the plastic elasticity of the second bracket 310 The second bracket 310 is retracted to move the pivot 312 toward the position of the positive shaft hole 322; (2) when the pivot 312 is aligned with the positive shaft hole 322, the second bracket 310 is expanded to restore the original shape. The pivot 312 is inserted into the shaft hole 322 such that assembly of the second bracket 310 with the first bracket 320 is completed (as shown in FIG. 2B). That is, the lifting unit 300 can improve the convenience of assembling the second bracket 310 and the first bracket 320 by the guiding of the guiding slope 314a of the pivot 312.

Furthermore, in an embodiment, as shown in FIG. 1 , the bottom plate 100 has coupling members 110 and 120 , and the coupling member 110 is coupled to the second bracket 310 , and the coupling member 120 is coupled to the first bracket. Bracket 320. The coupling members 110 and 120 protrude from the upper surface of the bottom plate 100 and have a bent hook form. In this embodiment, the bottom plate 100 can be formed by stamping processing of the metal plate member, so that the coupling members 110 and 120 can be self-contained. The surface of the bottom plate 100 is bent upwardly, so that the bottom plate portions of the coupling members 110, 120 are formed to form openings 102a, 102b. Correspondingly, the second bracket 310 has a card slot 316 and is rotatably engaged with the coupling member 110, and the second bracket 310 has a rotating shaft portion 318 disposed at an opposite end of the slot 316 in the X-axis direction to connect the keycap. 200, the two ends of the second bracket 310 are respectively connected to the bottom plate 100 and the keycap 200. Moreover, in this embodiment, the bottom plate 100 has a bottom edge 120a adjacent to the coupling member 120. Specifically, the bottom plate edge 120a extends in the Y-axis direction to connect the edge of the coupling member 120, and the bottom plate edge 120a defines a portion of the edge of the opening 102b.

The first bracket 320 has side flaps 324 for rotatably engaging the coupling member 120 of the bottom plate 100. Specifically, the side panels 324 are sheets that extend outwardly from the side edges of the bottom end 320a of the first bracket 320. As described above, the first bracket 320 is preferably formed by bending a metal sheet by press working. Therefore, the side flap 324 is bent from the upright side wall of the first bracket 320 and the shaft hole 322 is bent by about 90 degrees, and then extends horizontally to the outside. . That is, the side panel 324 has a side panel plane that is substantially parallel to the long axis direction of the first bracket 320 (ie, the X-axis direction), or can be regarded as the normal direction of the side panel plane. It is substantially parallel to the thickness direction of the first bracket 320 (ie, the Z-axis direction). The side panels 324 are disposed proximate to the bottom end 320a to engage the coupling 120 of the backplane 100. In addition, the side panels 324 are formed with openings 324a for receiving the coupling members 120 of the bottom plate 100. The opening 324a is preferably rectangular. In this embodiment, the opening 324a is an open opening and its open end faces the side edge of the side flap 324. Specifically, the opening 324a is recessed from the side flap 324 from the outside to the inside to form an accommodation space. That is, the opening 324a is recessed inward from a portion of the outer edge of the side flap 324 in the X-axis direction such that the extension length of the portion of the side flap 324 surrounding the opening 324a in the Y-axis direction is reduced. From another point of view, as shown in FIG. 2A, the side panel 324 includes a first flap portion 323a, a second flap portion 323b, and a third flap portion 323c, wherein the second flap portion 323b is coupled to the first flap portion 323b. The inside of the flap portion 323a and the third flap portion 323c (that is, on the side closer to the shaft hole 322 in the Y-axis direction), and the length of the second flap portion 323b in the Y-axis direction is smaller than the first flap portion 323a and the third flap The length of the sheet portion 323c in the Y-axis direction is such that the first flap portion 323a, the second flap portion 323b, and the third flap portion 323c are connected to form an open opening 324a.

FIG. 3A is a schematic view showing the first bracket 320 connected to the bottom plate 100, and FIG. 3B and FIG. 3C are respectively a partially enlarged side view and a bottom view of the coupling member 120 of the side panel 324 and the bottom plate 100. As shown in FIGS. 3A-3C, when the first bracket 320 is coupled to the bottom plate 100, the first bracket 320 is disposed on the upper surface of the bottom plate 100, and the coupling member 120 is received in the opening 324a of the side panel 324 and is open from the opening. The 324a extends upwardly such that the lower surface 324b of the side panel 324 is in linear contact with the bottom edge 120a of the vicinity of the coupling member 120 (the two are in contact with each other on a line), so that the support keycap 200 is formed relative to the bottom plate 100. The pivot point of the first bracket 320 during the lifting movement causes the first bracket 320 to rotate relative to the bottom edge 120a. Specifically, (1) the contact area of the bottom plate 100 is the bottom plate edge 120a: a part of the bottom plate edge defining the opening 102b, that is, the bottom plate 100 extends in the Y-axis direction in the opening 102b to connect the bottom edge of the coupling member 120; 2) Side flap 324 contact area contact line L: approximately along the side edge 324a1 of the opening 324a in the Y-axis direction of the lower surface of the side flap 324 (ie, approximately the junction of the first flap portion 323a' and the second flap portion 323b'), And as the keycap 200 moves up and down relative to the bottom plate 100, the contact line L may move slightly on the side flap lower surface 324b, for example, the contact line L'. In other words, the lower surface of the first fin portion 323a and the lower surface of the second fin portion 323b are joined to form a flat lower surface as a contact area between the side flap 324 and the bottom edge 102a.

Furthermore, the coupling member 120 has a hook top portion 122 and a hook upright portion 123, wherein the hook upright portion 123 abuts the bottom plate edge 120a and substantially extends in a normal direction (ie, a Z-axis direction) of the upper surface of the bottom plate 100, The hook top portion 122 extends from the hook upright portion 123 in the X-axis direction. When the first bracket 320 is coupled to the bottom plate 100, the hook upright portion 123 is located in the opening 324a of the side panel 324 such that the first flap portion 323a and the second flap portion 323b are adjacent to the two phases of the hook upright portion 123, respectively. Adjacent sides (i.e., both sides of the Y-axis and the X-axis), the first fin portion 323a and the third fin portion 323c are respectively adjacent to opposite sides of the hook upright portion 123 (i.e., opposite sides of the X-axis). Moreover, in this embodiment, the hook top 122 has a curved lower surface 122a as an arcuate contact surface that contacts the upper surface 324c of the side panel 324 (ie, the upper surface of the first flap portion 323a). Preferably, the end of the lower surface 122a adjacent to the hook upright portion 123 forms a receiving recess 123a. That is, the lower surface of the hook top 122 forms an arcuate lower surface 122a with respect to the X-axis direction. When the lifting unit 300 moves up and down with respect to the bottom plate 100 in response to the keycap 200, the first bracket 320 is rotated by the linear contact of the lower surface 324b of the side flap 324 with the bottom edge 120a; at this time, the curved lower surface of the top portion 122 of the hook 122a is in contact with the upper surface 324c of the side flap 324 (i.e., the upper surface of the first flap portion 323a) such that the side flap 324 is rotated along the curved lower surface 122a by the guiding of the curved lower surface 122a, and the recess is received. 123a can accommodate the upper right corner 324d of the upper surface 324c of the side flap to increase the stability and smoothness of the lifting movement. Furthermore, this embodiment is illustrated The storage hook groove 123a is formed adjacent to the hook top portion 122 and the hook upright portion 123, but is not limited thereto. In other embodiments, as shown in FIG. 3D, the lower surface 122b of the hook top 122 may be a horizontal straight line adjacent to the hook upright portion 123, and the arc angle may be naturally formed when the right side corner 324d of the side flap is formed. There is only a small amount of interference between them, which is enough to rotate smoothly.

In other words, the key structure 10 of the present invention defines the bottom edge 120a of the opening 102b by the opening of the bottom plate 100 to have a high manufacturing precision, and can be achieved by the side panel 324 and the bottom plate near the coupling 120. The linear contact of the edge 120a acts as a pivot point, thereby enhancing the press stability of the button structure 10. Moreover, the coupling member 120 is substantially bent by 90 degrees with respect to the upper surface of the bottom plate 100, so that the bending angle is easily controlled. It should be noted here that in this embodiment, although a part of the edge defining the opening 102b is used as the bottom edge 120a, in other embodiments, the bottom edge 120a may be the edge of other portions of the bottom plate. For example, in other embodiments, a recess having a step can be formed adjacent the coupling 120 with respect to the upper surface of the bottom plate such that the bottom edge abuts the step edge of the recess as the bottom edge 120a described above. That is, the bottom edge 120a is preferably a bottom plate formed at an edge formed by the end of the coupling member 120 in the X-axis direction.

Furthermore, the keycap 200 has a coupling mechanism for connecting the first bracket 320 and the second bracket 310 of the lifting unit. In one embodiment, as shown in FIGS. 4A-4D, the lower surface of the keycap 200 is provided with a rotating shaft 210, and the rotating shaft 210 is rotatably engaged with the rotating shaft portion 318 of the second bracket 310. Further, the keycap 200 further has a chute 220 formed on a lower surface of the keycap 200. The chute 220 is slidably coupled to the first bracket 320, and the chute 220 has an upper sliding surface 222 and a lower sliding surface 224. Specifically, the keycap 200 has a pair of coupling mechanisms 221 protruding downward from the lower surface of the keycap 200 and having opposite L-shaped cross sections to define the chute 220 such that the horizontal portions of the two L-shaped sections are used as slip The lower sliding surface 224 of the groove 220 and the lower surface of the corresponding key cap 200 serve as the upper sliding surface 222 of the chute 220.

Correspondingly, the first bracket 320 has an S-shaped extension 326 for coupling with the sliding slot 220 of the keycap 200. Specifically, the S-shaped extension 326 extends outwardly from the end edge of the keycap end 320b. That is, the S-shaped extension portion 326 is bent outwardly from the end edge of the key end 320b of the first bracket 320 in the X-axis direction such that the S-shaped extension portion 326 has an S-shaped cross section in the X-axis direction. The S-shaped extension 326 has an upper bending surface 326a and a lower bending surface 326b, and the center of curvature of the upper bending surface 326a and the lower bending surface 326b is along the extending direction of the sliding slot 220 (ie, the X-axis direction or the first bracket) 320 sliding direction) setting. That is, the first bracket 320 is formed by stamping and bending a metal sheet, so that the S-shaped extending portion 326 forms a circular arc surface at the two bent portions of the S-shaped extending portion 326 due to the ducting property of the metal bending. The upper curved surface 326a and the lower curved surface 326b are respectively disposed such that the center of curvature of the upper curved surface 326a and the lower curved surface 326b are disposed along the X-axis direction, so as to reduce the S-shaped extending portion 326 in the Z-axis direction. The thickness on the top to facilitate miniaturization of the button structure. As shown in FIG. 4C and FIG. 4D, the lifting unit 300 is in contact with the upper sliding surface 222 and the lower sliding surface 224 by the upper bending surface 326a and the lower bending surface 326b as a sliding guiding surface. That is, when the keycap 200 is moved up and down with respect to the bottom plate 100, the first bracket 320 generates an arc guide by the contact of the upper curved surface 326a and the lower curved surface 326b with the upper sliding surface 222 and the lower sliding surface 224, respectively. The sliding is performed relative to the keycap 200, thereby making the lifting movement smoother.

Furthermore, the first bracket 320 may have a guiding surface 321 as a positioning guide surface when the lifting unit 300 is assembled with the keycap 200. In one embodiment, referring to FIG. 2A and FIG. 4A , the guiding surface 321 of the first bracket 320 is disposed adjacent to the side of the S-shaped extending portion 326 . Specifically, the first bracket 320 is bent downward from the side edge of the keycap end 320b to form a guiding surface 321 . In one embodiment, the guiding surface 321 is a side wall outer surface of the first bracket 320 that is bent downward in the X-axis direction. Similarly, the first bracket 320 is formed by stamping and bending a metal sheet, so that the downwardly bent side wall is bent due to the metal. The ducting characteristic forms a guiding surface 321 having a circular arc angle in the bent portion. When the keycap 200 is assembled with the first bracket 320, the keycap 200 can be guided by the arcuate angle of the guiding surface 321, so that the connecting mechanism 221 is moved downward along the guiding surface 321 to be coupled with the first bracket 320. , thereby improving the convenience of assembly.

FIG. 5 is a schematic diagram of a button structure 20 according to another embodiment of the present invention. The key structure 20 shown in FIG. 5 differs from the key structure 10 of FIG. 1 in the elevation unit 300'. Other components (eg, the bottom plate 100, the keycap 200, the switch layer 400, and the recovery unit 500) have the structure described above. For details of the components of the base plate 100, the keycap 200, the switch layer 400, the reply unit 500, and the like, reference may be made to the related description of FIG. 1 , and details are not described herein again.

As shown in FIG. 5, the lifting unit 300' includes a first bracket 320' and a second bracket 310. The first bracket 320' and the second bracket 310 are rotatably pivoted to form a side having an X-like shape. Scissor lift structure. The second bracket 310 of the present embodiment is substantially the same as that of FIG. 1 , that is, the second bracket 310 is preferably an inner plastic frame made of a plastic material, and the second bracket 310 has a pivot 312, a slot 316, and a shaft portion. The components 318 and the like are rotatably coupled to the shaft hole 322 of the first bracket 320', the coupling member 110 of the bottom plate 100, and the rotating shaft 210 of the keycap 200, respectively. For details on the construction of the second bracket 310, reference may also be made to the related description of FIG. Similarly, the first bracket 320' of the present embodiment is preferably an outer metal frame manufactured by press working from a relatively rigid metal sheet to increase the combination of the first bracket 320' and the second bracket 310 into a lifting unit. The overall rigidity of the 300' further enhances the overall actuation of the button structure. In this embodiment, as shown in FIGS. 6A-6B, the first bracket 320' has a shaft hole 322 to rotatably engage with the pivot 312 of the second bracket 310 to form a lifting unit 300', and the first bracket For details of the pivoting of the second bracket 310 to the second bracket 310 by the shaft hole 322 and the pivot shaft 312, reference may be made to the related description of FIG.

Further, the first bracket 320' has a side flap 324' for rotatably engaging the coupling member 120 of the bottom plate 100. The side panels 324' extend outwardly from the side edges of the bottom end 320a of the first bracket 320. The side panel 324' of the first bracket 320 of Fig. 1 has a design of an open opening 324a. The side panel 324' of the present embodiment has a closed opening 324a' for receiving the coupling member 120 of the bottom plate 100. Specifically, the side flap 324' is a sheet extending horizontally outward from the side edge of the bottom end 320a of the first bracket 320 in the Y-axis direction, and the opening 324a' is opened on the side flap 324 adjacent to the side edge of the second bracket. The upper through hole and the opening 324a' are preferably rectangular. Specifically, the side panel 324' includes a first flap portion 323a', a second flap portion 323b', and a third flap portion 323c', wherein the second flap portion 323b' is coupled to the first flap portion 323a. 'and the outer side of the third fin portion 323c' (ie, away from the shaft hole 322 side in the Y-axis direction), and the length of the second fin portion 323b' in the Y-axis direction is smaller than the first fin portion 323a' and the third wing The length of the piece portion 323c' in the Y-axis direction is such that the first flap portion 323a', the second flap portion 323b', and the third flap portion 323c' are connected to form a closed opening 324a'.

7A is a schematic view showing the first bracket 320' attached to the bottom plate 100, and FIG. 7B is a partially enlarged bottom view of the coupling member 120 of the side panel 324' and the bottom plate 100. As shown in FIGS. 7A-7B, when the first bracket 320' is coupled to the bottom plate 100, the first bracket 320' is placed on the upper surface of the bottom plate 100, and the coupling member 120 extends through the opening 324a' of the side flap 324'. The lower surface 324b' of the side panel 324' is brought into linear contact with the bottom edge 120a of the vicinity of the coupling member 120 to form a pivot fulcrum for supporting the lifting and lowering movement of the keycap 200 relative to the bottom plate 100. In particular, the bottom edge 120a can be considered to define a portion of the bottom edge of the opening 102b. That is, the bottom edge 120a of the bottom plate 100 extends in the Y-axis direction in the opening 102b to connect the bottom edge of the coupling member 120 such that the contact line of the side flap 324' in linear contact with the coupling member 120 is approximately the side of the opening 324a'. The edge 324a2 is an extension line of the lower surface 324b' of the side flap 324' in the Y-axis direction (ie, approximately the first flap portion 323a' and the second flap portion 323b' Junction). In this embodiment, the side panels 324' are in line contact with the bottom edge 120a by a lower surface surrounding the outer portion of the opening 324a', and the side flaps 324 of FIG. 1A are surrounded by the lower surface of the inner portion of the opening 324a. The bottom edge 120a is in line contact, but is not limited thereto. In other embodiments, by changing the position of the opening 324a', for example, in the middle of the side panel, the opening 324a' retains a portion of the side flaps on both sides of the Y-axis direction, so that the side panel can be surrounded by the opening. The lower surface of the inner and outer portions of 324a' is in line contact with the bottom edge 120a.

Moreover, similarly to the above, when the first bracket 320' is coupled to the bottom plate 100, the hook upright portion 123 is located in the opening 324a' of the side flap 324' such that the first flap portion 323a' and the second flap portion 323b' are adjacent to two adjacent sides of the hook upright portion 123 (ie, both sides of the Y-axis and the X-axis), and the first flap portion 323a' and the third flap portion 323c' are respectively adjacent to the opposite sides of the hook upright portion 123. The side (ie, the opposite side of the X-axis), and the first flap portion 323a' is located between the bottom plate 100 and the top 122 of the hook. The curved lower surface 122a of the hook top 122 of the coupling member 120 can also serve as an arcuate contact surface that contacts the upper surface 324c' of the side panel 324' (i.e., the upper surface of the first flap portion 323a'). When the lifting unit 300' is raised and lowered relative to the bottom plate 100, the first bracket 320' is rotated by the linear contact of the lower surface 324b' of the side flap 324' with the bottom edge 120a, and the curved lower surface of the top 122 of the hook 122a contacts the upper surface 324c' of the side flap 324' such that the side flap 324' moves along the curved lower surface 122a by the guiding of the curved lower surface 122a, increasing the stability and smoothness of the lifting movement.

Furthermore, as shown in FIGS. 8A-8D, the first bracket 320' has a bent surface 325a, and the end surface of the curved surface 325a is bent downwardly, and the curved surface 325a is used as a sliding upper surface. Guide surface. Specifically, the first bracket 320' is bent downward from the end edge of the key end 320b to form the side wall 325, and is bent at the connection between the board surface and the side wall 325 of the first bracket 320' because of the extending property of the metal bending. A portion of the arcuate curved surface 325a is formed. The first bracket 320' has a bent portion 328, and the bent portion 328 It is disposed on the side edge of the key end 320b adjacent to the end edge. Specifically, the first bracket 320' is bent downward from the side edge of the keycap end 320a to form a bent portion 328, and the surface of the bent portion 328 is parallel to the X-axis direction. The bent portion 328 has a circular arc end surface 328a, and the circular arc end surface 328a serves as a sliding lower guide surface. That is, the lower end of the bent portion 328 is formed in an arc shape such that the lower end surface of the bent portion 328 becomes the circular arc end surface 328a.

When the first bracket 320' is assembled with the keycap 200, the keycap 200 can be coupled to the first bracket 320' by the guiding of the bending surface 325a to improve the assembly convenience. In addition, as shown in FIG. 8C and FIG. 8D, the lifting unit 300' is in contact with the sliding surface 222 above the keycap 200 by the bending surface 325a, and the circular arc end surface 328a contacts the sliding surface 224 below the keycap 200, so that The bending surface 325a as the upper guiding surface slides on the upper sliding surface 222, and the circular arc end surface 328a as the lower guiding surface slides on the lower sliding surface 224. That is, when the keycap 200 is moved up and down with respect to the bottom plate 100, the first bracket 320' is curved by the contact of the curved surface 325a and the circular arc end surface 328a with the upper sliding surface 222 and the lower sliding surface 224, respectively. The function is to slide relative to the keycap 200, thereby making the lifting movement smoother.

Further, the first bracket 320' may have a similar guiding surface 321 as a positioning guide surface when the lifting unit 300' is assembled with the keycap 200. In one embodiment, referring to FIG. 6A, the guiding surface 321 of the first bracket 320' is disposed adjacent to the bent portion 328. Specifically, the first bracket 320' is bent downward from the side edge of the keycap end 320b to form a guiding surface 321 . In other words, the guiding surface 321 may be a side wall outer surface of the first bracket 320' which is bent downward in the X-axis direction. Similarly, the first bracket 320' is formed by stamping and bending a metal sheet such that the downwardly bent side wall forms a guiding surface 321 having a circular arc angle at the bent portion due to the ducting property of the metal bending. When the keycap 200 is assembled with the first bracket 320', the keycap 200 can be guided by the arcuate angle of the guiding surface 321 and moved downward along the guiding surface 321 to be coupled with the first bracket 320'. This improves the convenience of assembly.

Referring to FIG. 9 , in another embodiment, the first bracket 320 further has a triggering portion 329 protruding downward from an end edge of the bottom end 320 a of the second bracket to trigger the switch layer 400 in response to the lifting motion of the key cap 200 . . Specifically, the trigger portion 329 is a tongue that extends inward from the inner edge of the bottom plate end 320a of the first bracket 320 in the X-axis direction and protrudes downward. When the keycap 200 is pressed downward toward the bottom plate 100, the lifting unit 300 is lowered, so that the trigger portion 329 also moves downward to trigger the switch layer 400. It should be noted that, although the setting of the triggering portion 329 is described by the first bracket 320, the triggering portion 329 may be disposed at the corresponding position of the first bracket 320', and details are not described herein. The integration of the triggering portion 329 to the first brackets 320, 320' can make the design of the reply unit 500 more flexible to enhance the pressing operation. For example, when the triggering portion 329 is integrated into the first brackets 320, 320', the elastic body as the returning unit 500 may not need to provide the protruding column of the triggering switch layer on the lower surface, so that the lifting stroke of the elastic body is increased, thereby improving the use. The feel of the user's pressing operation.

In the above embodiments of FIG. 1 and FIG. 5, the first brackets 320, 320' are used as one of the two pivot brackets of the scissor lifting unit 300, 300', but in other embodiments, The partial structure of the first bracket is changed to serve as an auxiliary bracket outside the two pivot brackets of the scissor lifting unit, so as to further increase the rigidity of the lifting unit in the existing scissor structure and thereby improve the structural strength of the entire button. As shown in FIG. 10, in another embodiment, the present invention provides a button structure 30 including a bottom plate 150, a key cap 250, and a lifting unit 600, wherein the key cap 250 is disposed above the bottom plate 150, and the lifting unit 600 is coupled to Between the keycap 250 and the bottom plate 150, the support key cap 250 is moved up and down relative to the bottom plate 150. It should be noted that, although not shown in FIG. 10, the button structure 30 can also have a switch layer and a reply unit similar to those described above, and details are not described herein again. In this embodiment, the lifting unit 600 includes a first bracket 610, a second bracket 620, and a third bracket 630, wherein the second bracket 620 and the third bracket 630 are rotatably pivoted to form a scissor linkage The first bracket 610 can connect the bottom plate 150 and the keycap 250 in a non-structural manner with the second bracket 620 and the third bracket 630 to strengthen the rigidity of the lifting unit 600. Specifically, the second bracket 620 and the third bracket 630 can be an inner/outer frame made of a plastic material, and pivotally connected to the middle portion of the bracket by, for example, a pivot 622 and a shaft hole 632. The second bracket 620 and the third bracket 630 have connecting portions at both ends thereof to connect the bottom plate 150 and the key cap 250. For example, the second bracket 620 has a card slot 624 rotatably engaged with the hook 152 of the bottom plate 150, and has a pivot portion 626 at a opposite end of the card slot 624 rotatably engaged with the key slot 252 of the key cap. Correspondingly, the third bracket 630 has a rotating shaft portion 634 rotatably engaged with the hook 154 of the bottom plate 150, and has a sliding rail portion 636 at the opposite end of the rotating shaft portion 634 and slidably coupled with the sliding slot 254 of the keycap 250. .

In this embodiment, the first bracket 610 is designed as a hollow rectangular frame bracket, so that when the lifting unit 600 is lowered to the lowest position, the first bracket 610 is substantially located outside the second bracket 620 and the third bracket 630. For example, the first bracket 610 is preferably larger than the second bracket 620 and the third bracket 630, so that the projection range of the first bracket 610 on the plane of the bottom plate 150 substantially covers the second bracket 620 and the third bracket 630 on the bottom plate 150. The projection range of the plane. It should be noted here that the first bracket 610 is illustrated as a rectangular frame, however, in other embodiments, the first bracket 610 may have a different form. For example, in another embodiment, the first bracket 610 can be designed in the form of a rectangular strip bracket, such that two separate rectangular strip brackets form a set of auxiliary brackets and are respectively disposed on the second bracket 620 and the third bracket 630. On the outside, the effect of increasing the rigidity of the lifting unit can also be achieved.

In this embodiment, the first bracket 610 has side flaps 614, wherein the side flaps 614 are designed to be similar to the side flaps 324' of the embodiment of FIG. 5 described above to achieve coupling with the coupling member 156 of the bottom plate 150 and to flank the flaps 156. The lower surface 614b of the sheet 614 is in linear contact with the bottom edge 150a to form a shaft that supports the lifting and lowering movement of the keycap 250 relative to the bottom plate 150. In other words, the side flap 614 is from the first A bottom end edge of a bracket 610 extends in the Y-axis direction and has an opening 614a. Correspondingly, the coupling member 156 is protruded from the upper surface of the bottom plate 150 and has a hook top 156a and a hook upright portion 156b, and the bottom plate 150 has a bottom plate edge 150a adjacent to the coupling member 156. As shown in FIG. 11A and FIG. 11B, when the first bracket 610 is assembled to the bottom plate 150, the hook upright portion 156b is bored in the opening 614a, and the lower surface 614b of the side flap 614 is in linear contact with the bottom plate edge 150a. A shaft that supports the lifting and lowering movement of the keycap 250 relative to the bottom plate 150 is formed such that the first bracket 610 is rotatable relative to at least the bottom edge 150a. Furthermore, the first bracket 610 can also have an S-shaped extension 616 similar to that described above such that the two curved faces 616a, 616b of the S-shaped extension 616 and the upper sliding face 256a of the chute 256 of the keycap 250, respectively. The lower sliding surface 256b is in contact as a sliding guiding surface. For the detail of the side panel 614 and the S-shaped extension 616 of the first bracket 610 and its connection with the bottom plate 150 and the keycap 250, reference may be made to the side flaps 324, 324' and the S-shaped extension in the above embodiment. The relevant description of 326 will not be repeated here.

It should be noted that the first bracket 610 is the outermost bracket of the supporting unit 600. Therefore, the first bracket 610 is connected to the keycap 250 and the bottom plate 150 and the brackets that constitute the scissors structure (ie, the third bracket 630). the same. That is, the coupling member 156 of the bottom plate 150 and the hook 154 are disposed on the same side, and the hook 152 is disposed on the other side of the bottom plate 150. Moreover, this embodiment illustrates that the side flap 614 of the first bracket 610 has a side flap 324' similar to the embodiment of FIG. 5. However, in other embodiments, the first bracket 610 can be designed to have a similar implementation to that of FIG. 1 described above. The side flaps 324 are configured to form a rotational axis in linear contact with the bottom edge 150a of the bottom plate 150. Moreover, this embodiment illustrates that the first bracket 610 has an S-shaped extension 326 similar to the embodiment of FIG. 1 at the keycap end. However, in other embodiments, the first bracket 610 can be designed to have an implementation similar to FIG. 5 described above. The bent surface 325a and the circular arc end surface 328a are used as guide surfaces for sliding and assembly.

As shown in FIG. 12, in another embodiment, the present invention provides a button structure 40 including a bottom plate 180, a key cap 280, and a lifting unit 700, wherein the key cap 280 is disposed above the bottom plate 180, and the lifting unit 700 is coupled to The keycap 280 and the bottom plate 180 support the keycap 280 to move up and down relative to the bottom plate 180. In addition, the button structure 40 can also have a switch layer (not shown) and a reply unit 500 similar to those described above, and details are not described herein again. In this embodiment, the lifting unit 700 includes a first bracket 710 and a second bracket 720, and is coupled by the ends of the first bracket 710 and the second bracket 720 to form a lifting unit having a V-shaped side. Further, in conjunction with the lifting unit 700 of the V-shaped structure, the bottom plate 180 and the key cap 280 have correspondingly connected coupling mechanisms. In this embodiment, the first bracket 710 and the second bracket 720 are both designed to have a side flap structure similar to that described above, so that the first bracket 710 and the second bracket 720 can be linear with the bottom edges 180a and 180b of the bottom plate 180, respectively. Contacting to form a rotating shaft that supports the keycap 280 for lifting movement relative to the bottom plate 180 allows the first bracket 710 and the second bracket 720 to rotate and slide at least relative to the floor edges 180a and 180b.

In this embodiment, the first bracket 710 and the second bracket 720 have similar shapes and corresponding coupling structures. As shown in FIG. 12 and FIG. 13A, the first bracket 710 and the second bracket 710 are in the form of a plate having a half-moon opening 710a, 720a, and the first bracket 710 and the second bracket 710 are opposite to each other by two openings 710a, 720a. The manner is disposed on the bottom plate 180 such that the two openings 710a, 720a together form an accommodation space for accommodating the recovery unit 500 such as an elastic body. It should be noted that when the recovery unit 500 is a magnetic component, the first bracket 710 and the second bracket 710 may have no openings 710a, 720a, and the openings 710a, 720a may also be rectangular or other suitable shapes. limit.

Moreover, the first bracket 710 and the second bracket 710 have corresponding coupling structures at opposite ends, so that the first bracket 710 and the second bracket 720 can relatively move and rotate. As shown in FIG. 12, the bottom end of the first bracket 710 has a first left bottom end 714 and a first right bottom end 716, and the second bracket 720 The bottom end has a second left bottom end 724 and a second right bottom end 726. When the first bracket 710 and the second bracket 720 are docked, as shown in FIG. 13A, the first left bottom end 714 is coupled to the second left bottom end 724, and the first right bottom end 716 is coupled to the second. Above the bottom right end 726. Specifically, the first left bottom end 714 and the first right bottom end 716 can be regarded as the foot of the first bracket 710 extending from both sides of the half moon opening 710a, and the second left bottom end 724 and the second right bottom end 726 The second bracket 720 can be regarded as a foot extending from both sides of the half-moon opening 720a such that the two pairs of feet are coupled in a top-to-bottom manner. In addition, it is preferable to have a stop surface as the lower leg to restrict the sliding of the butt joint. For example, the first left bottom end 714 and the second right bottom end 726, which are lower legs, preferably have stop faces 714a and 726a. Specifically, the first left bottom end 714 and the second right bottom end 726 have a curved surface as the above-mentioned blocking surfaces 714a and 726a at the frame adjacent to the first bracket 710 and the second bracket 720. When the first bracket 710 and the second bracket 720 are lowered to the lowest position, the blocking surfaces 714a and 726a can respectively abut the second left bottom end 724 and the first right bottom end 716 to limit the first bracket 710 and the second bracket. The relative movement of 720.

Again, similar to the embodiment described above, the first bracket 710 has a first side panel 712 and the second bracket 720 has a second side panel 722. As described above, the first side panel 712 and the second side panel 722 are horizontally extending from the side edges of the first bracket 710 and the second bracket 720, respectively, and the first side panel 712 and the second side panel 722 are 722. Each has a first opening 712a and a second opening 722a. Specifically, the first side panel 712 and the second side panel 722 extend horizontally from the sides adjacent to the corresponding bracket bottom ends 714/716 and 724/726, respectively, such that the surfaces of the first side panel 712 and the second side panel 722 Parallel to the surface of the stent plate, that is, parallel to the longitudinal direction of each stent (for example, the X-axis direction). Corresponding to the arrangement of the first side panel 712 and the second side panel 722, the bottom plate 180 has a first bottom plate edge 180a and a second bottom plate edge 180b. The first coupling member 182 and the second coupling member 184 are protruded from the bottom plate 180. The upper table is adjacent to the first bottom plate edge 180a and the second bottom plate edge 180b, respectively. As shown 13A, the first coupling member 182 and the second coupling member 184 are in the form of a hook, wherein the first coupling member 182 includes a first hook top 182a and a first hook upright portion 182b, and the second coupling The connector 184 includes a second hook top 184a and a second hook upright 184b. The first coupling member 182 and the second coupling member 184 are correspondingly disposed on the same side such that the first hook top 182a and the second hook top 184a face each other. In other words, the first coupling member 182 and the second coupling member 184 are oppositely disposed along the X-axis direction, such that the first hook top 182a and the second hook top 184a are respectively from the first hook erect portion 182b and the second card. The hook straight portion 184b extends in the X-axis direction, and the first bottom plate edge 180a and the second bottom plate edge 180b are connected to extend in the Y-axis direction to connect the first hook upright portion 182b and the second hook hook upright portion 184b to define an opening 181. The opposite side edges of the two.

Furthermore, as shown in FIG. 13B, the first side panel 712 includes a first flap portion 713a, a second flap portion 713b, and a third flap portion 713c, and the second side flap 712 includes a fourth flap portion 723a. The fifth fin portion 723b and the sixth fin portion 723c. When the first bracket 710 and the second bracket 720 are coupled to the coupling members 182 and 184 of the bottom plate 180 by the side panels 712 and 722, the first hook upright portion 182b and the second hook hook upright portion 184b are respectively An opening 712a and a second opening 722a extend so that the first flap portion 713a and the second flap portion 713b are respectively adjacent to two adjacent sides of the first hook upright portion 182b, and the first flap portion 713a and the third portion The flap portions 713c are respectively adjacent to opposite sides of the first hook upright portion 182b, and the fourth flap portion 723a and the fifth flap portion 723b are respectively adjacent to two adjacent sides of the second hook upright portion 184b, and The four wing pieces 723a and the sixth wing piece 723c are respectively adjacent to opposite sides of the second hook upright portion 184b. Furthermore, the first fin portion 713a is adjacent to the fourth fin portion 723a. The lower surface of the first fin portion 713a is coupled to the lower surface of the second fin portion 713b to constitute a first flat lower surface as a lower surface of the first side flap 712 in linear contact with the first bottom plate edge 180a, and the fourth flap portion The lower surface of the 723a is connected to the lower surface of the fifth fin portion 723b to constitute a second flat lower surface The lower surface of the second side panel 722 is in linear contact with the second bottom edge 180b.

In this embodiment, as shown in FIG. 12 and FIG. 14, the first brackets 710 and 720 may also have S-shaped extensions 718 and 728 similar to those described above, so that the two curved surfaces of the S-shaped extensions 718 and 728 The 718a/728a and 718b/728b are in contact with the upper sliding faces 282a/284a and the lower sliding faces 282b/284b of the chutes 282/284 of the keycap 280, respectively, as sliding guide faces. For the detailed structure of the side flaps 712, 722, the S-shaped extensions 718, 728 of the first bracket 710 and the second bracket 7200, and the connection and function with the bottom plate 180 and the key cap 280, refer to the relevant side flaps in the above embodiment. The related description of 324, 324' and S-shaped extension 326 will not be repeated here.

Moreover, in this embodiment, the side panel 712 of the first bracket 710 and the side panel 722 of the second bracket 720 have a side flap 324 ′ similar to the embodiment of FIG. 5 . However, in other embodiments, the first bracket 710 and At least one of the second brackets 720 can be designed to have side panels 324 similar to the embodiment of FIG. 1 described above to achieve linear contact with the bottom edges 180a, 180b of the bottom panel 180 to form a rotating shaft. In addition, this embodiment illustrates that the first bracket 710 and the second bracket 720 have an S-shaped extension 326 similar to the embodiment of FIG. 1 at the keycap end. However, in other embodiments, the first bracket 710 and the second bracket 720. At least one of them may be designed to have a curved surface 325a and a circular arc end surface 328a similar to the above-described embodiment of FIG. 5 as a guiding surface for sliding and assembly, and details are not described herein again.

Furthermore, in the above embodiment, the button structure 10, 20, 30, 40 of the present invention forms a linear contact with the bottom edge of the bottom panel by the lower surface of the side panel of the bracket, and further serves as a rotating shaft for supporting the lifting and lowering movement of the keycap relative to the bottom plate. Pivot. However, in other embodiments, the pivot fulcrum may be formed by linear contact between the other portions of the bracket and the edge of the bottom plate. As shown in FIG. 15, in another embodiment, the bracket 810 can be designed to have a frame body 812 and a wing portion 814. The wing portion 814 is formed from a side surface of the frame body 812, and the frame body 812 has a frame lower surface 812b. And the flap portion 814 has The flap lower surface 814b, the flap lower surface 814b connected to the frame lower surface 812b constitutes a flat lower surface 810b. Specifically, the bracket 810 can be designed as a frame body having an opening 810a at its bottom end, and the flap portion 814 extends horizontally from the lower end of the side wall of the opening 810a toward the outside in the Y-axis direction. The bottom plate 190 has a coupling member 192 and a bottom plate edge 190a adjacent to the coupling member 192. The coupling member 192 includes a hook top portion 192a and a hook up portion 192b. When the bracket 810 is coupled to the bottom plate 190, the hook upright portion 192b is located in the opening 810a, and the flap portion 814 is located below the hook top portion 192a such that the lower end of the hook top portion 192a contacts the upper surface 814a of the flap portion 814. The flat lower surfaces (e.g., 812b and 814b) of the bracket 810 are in linear contact with the bottom edge 190a to form a pivot that supports the lifting and lowering movement of the keycap relative to the bottom plate 190 such that the bracket is rotatable relative to at least the bottom edge 190a.

In other embodiments, the brackets 320, 320', 610, 710, and 720 of the above embodiments may be designed to have the frame body and the wing portion structure of the bracket 810, and the bracket may be in linear contact with the edge of the bottom plate to form a pivot fulcrum. The role of to improve the stability of the button operation. That is, the brackets 320, 320', 610, 710, 720 can be designed to have only the flap portions 323a, 323a', 712a, 722a, etc., and are in linear contact with the bottom plate by the frame itself as a pivot fulcrum. In particular, the lifting unit bracket of the present invention has a flap portion that is parallel to the surface of the plate body such that the bracket and the bottom plate can have a support structure that can be accurately manufactured. As shown in the stent cross-sectional view of Fig. 16, the side section of the flap portion 910 has an upper right end point 912, a lower right end point 913, an upper left end point 914, and a lower left end point 915, in the four end points 912, 913, 914, 915. The rotation axis is closest to the lower right end point 913, and the distance D1 between the hook top 175a and the bottom plate 170 is greater than the distance D2 between the upper right end point 912 and the lower right end point 913 (D2 is the thickness of the fin portion 910). When the keycap moves up and down relative to the bottom plate, the upper right end point 912 and the lower right end point 913 are substantially held above the rotating shaft. In other words, the present invention is constructed by a bracket structure in which the plane of the fin portion is substantially parallel to the long axis of the bracket (ie, the X-axis direction) and the coupling member that protrudes upright from the surface of the bottom plate. The bracket can be brought into linear contact with the edge of the bottom plate, which not only improves the stability of the button operation, but also improves the manufacturability and ease of assembly of the bracket.

The present invention has been described by the above embodiments, but the above embodiments are for illustrative purposes only and are not intended to be limiting. It will be apparent to those skilled in the art that the embodiments specifically described herein may have other modifications of the embodiments. Accordingly, the scope of the invention is intended to cover such modifications and are only limited by the scope of the appended claims.

10‧‧‧Key structure

100‧‧‧floor

102a, 102b‧‧‧ openings

110, 120‧‧‧ couplings

120a‧‧‧Bottom edge

200‧‧‧Key Cap

300‧‧‧ Lifting unit

310‧‧‧second bracket

312‧‧‧ pivot

316‧‧‧ card slot

318‧‧‧ shaft part

320‧‧‧First bracket

320a‧‧‧ bottom plate end

320b‧‧‧Keycap end

322‧‧‧Axis hole

324‧‧‧Face

324a‧‧‧ openings

326‧‧‧S-shaped extension

400‧‧‧Switch layer

410‧‧‧through hole

500‧‧‧Response unit

Claims (19)

A button structure includes: a bottom plate; a key cap disposed above the bottom plate; and a lifting unit coupled between the key cap and the bottom plate to support the lifting and lowering movement of the key cap relative to the bottom plate, The lifting unit comprises: an inner plastic bracket; and an outer metal bracket rotatably pivotally connected to the inner plastic bracket, wherein the inner plastic bracket provides the assembly elasticity of the lifting unit and the outer metal bracket increases the lifting unit The overall rigidity of the outer metal bracket is larger than the inner plastic bracket, so that the projection range of the outer metal bracket on the plane of the bottom plate substantially covers the projection range of the inner plastic bracket on the plane of the bottom plate. The button structure of claim 1, wherein the outer metal bracket is a first closed frame, and the inner plastic bracket is a second closed frame, and the keycap moves to a minimum relative to the bottom plate. In position, the first closure frame substantially surrounds the second closure frame. The button structure of claim 1, wherein the outer metal bracket has a shaft hole, and the inner plastic bracket has a pivot coupling to the shaft hole, so that the outer metal bracket and the inner plastic bracket can be rotated. The ground pivotally connects, the pivot has a substantially rectangular shape to increase the strength of the pivot. The button structure of claim 3, wherein the pivoting system has a guiding end portion, the guiding end portion including a guiding slope to guide the pivot shaft into the shaft hole. The button structure of claim 1, wherein the bottom plate has a coupling member protruding from the upper surface of the bottom plate, and the outer metal bracket has a side flap, the side flap including a first a wing portion and a second wing portion, the first wing portion and the second wing portion are respectively adjacent to two adjacent sides of the coupling member, and the lower surface of the first wing portion is connected to the second wing portion The surface is configured to form a flat lower surface. The button structure of claim 1, wherein the bottom plate has a coupling member protruding from the upper surface of the bottom plate, and the outer metal bracket has a side flap, the side flap including a first flap portion and a third wing portion having an opening between the first wing portion and the third wing portion, the coupling member extending through the opening, the first wing portion and the third wing portion respectively Adjacent to the opposite sides of the coupling. The key structure of claim 5, wherein the bottom plate has a bottom plate edge adjacent to the coupling member, the lower surface of the side flap is in linear contact with the bottom plate edge to form a support for the key cap relative to The bottom plate performs one of the lifting movements of the rotating shaft such that the outer metal bracket rotates relative to the edge of the bottom plate. The button structure of claim 7, wherein the coupling member has a hook top having an arcuate lower surface for contacting the upper surface of the first flap portion as an arc. Contact surfaces. The key structure of claim 1, wherein the key cap has a sliding groove formed on a lower surface of the keycap, the sliding slot has an upper sliding surface and a lower sliding surface; the outer metal bracket is from a key The end edge of the cap end is bent to form an S-shaped extension portion, and the S-shaped extension portion has an upper bending surface and a lower bending surface, wherein the lifting unit is respectively separated by the upper bending surface and the lower bending surface And contacting the upper sliding surface and the lower sliding surface as a sliding guiding surface, and the center of curvature of the upper bending surface and the lower bending surface are disposed along the extending direction of the sliding slot, so as to reduce the S shape The thickness of the extension in a direction perpendicular to the direction in which the chute extends. The key structure of claim 1, wherein the key cap has a sliding groove formed on a lower surface of the keycap, the sliding slot has an upper sliding surface and a lower sliding surface; the outer metal bracket is from a key The end edge of the cap end is bent downward to form a bent surface and is bent downward from a side edge of the key end to form a bent portion, the bent portion has a circular arc end surface, and the bent surface serves as a sliding The upper guiding surface is a sliding lower guiding surface, and the upper guiding surface slides on the upper sliding surface, and the lower guiding surface slides on the lower sliding surface. The button structure of claim 9 or 10, wherein the outer metal bracket is further bent downward from a side edge of the keycap end to form a guiding surface for assembling the lifting unit and the keycap. Positioning guide surface. The button structure further includes a switch layer, and the outer metal bracket further has a trigger portion that is downward from an edge of the bottom end of the outer metal bracket. The protrusion triggers the switch layer in response to the lifting movement of the keycap. A button structure comprising: a bottom plate; a key cap disposed above the bottom plate, the key cap having a sliding groove formed on a lower surface of the key cap; and a lifting unit coupled to the key cap and the bottom plate To support the lifting and lowering movement of the keycap relative to the bottom plate, the lifting unit comprises: a first bracket having an S-shaped extension from an end edge of a keycap end of the first bracket Externally extending, the S-shaped extension has two bending faces respectively contacting the lower surface of the keycap and the sliding groove as a sliding guiding surface, and the center of curvature of the two bending surfaces is along the first The sliding direction of a bracket is set. a button structure comprising: a bottom plate; a key cap disposed above the bottom plate, the key cap having a sliding groove formed on a lower surface of the key cap, the sliding slot having two opposite sliding groove inner surfaces; and a lifting unit Connected between the keycap and the bottom plate to support the lifting and lowering movement of the keycap relative to the bottom plate, the lifting unit comprising: a first bracket having a bending surface from the first One end edge of one of the keycap ends of the bracket extends downwardly, and the first bracket has a bent portion disposed at a side edge of the end of the keycap adjacent to the end edge, the bent portion having a circular arc end surface, The curved surface and the circular arc end surface serve as sliding guiding surfaces, and respectively contact the inner surfaces of the two opposite sliding grooves. The button structure of claim 13 or 14, wherein the first bracket further has a guiding surface extending downward from a side edge of the keycap end to serve as the lifting unit Positioning guide surface when assembled with the keycap. The button structure of claim 13 or 14, wherein the lifting unit further comprises a second bracket and a third bracket, wherein the second bracket and the third bracket are supported by a shaft hole and a pivot Rotatingly pivotally, and the pivot has a substantially rectangular shape to increase the strength of the pivot. The button structure of claim 16, wherein the pivoting system has a guiding end portion, the guiding end portion including a guiding slope to guide the pivot shaft into the shaft hole. The button structure of claim 13 or 14, wherein the lifting unit further comprises a second bracket, wherein the second bracket and the first bracket are rotatably pivotally connected by a shaft hole and a pivot A scissor structure is formed and the pivot has a substantially rectangular shape to increase the strength of the pivot. The button structure of claim 13 or 14, wherein the lifting unit further comprises a second bracket movably coupled to the first bracket to form a V-shaped structure, and When the key cap moves up and down relative to the bottom plate, the first bracket is slid relative to the edge of the bottom plate.