WO2010121479A1

WO2010121479A1 - Keyboard key and assembly method therefor

Info

Publication number: WO2010121479A1
Application number: PCT/CN2009/076113
Authority: WO
Inventors: 袁建平
Original assignee: Yuan Jianping
Priority date: 2009-04-21
Filing date: 2009-12-28
Publication date: 2010-10-28
Also published as: WO2010121445A1; CN201886913U

Abstract

A keyboard key and an assembly method therefor are provided. The keyboard key includes a base, a sensor pad with colloidal silica, a scissor hinge and a keycap, and also includes a middle plate having a first surface and a second surface. A through-hole penetrating the first surface and the second surface is set in the middle plate, and a groove is formed along the edge of the through-hole on the second surface of the middle plate. Stop-posts at the lower part of the scissor hinge are contained in the groove and stop-posts at the upper part of the scissor hinge extend through the first surface of the middle plate through the through-hole and clip to the keycap. The sensor pad and the base are fixed on the second surface of the middle plate. The present keyboard key uses the middle plate to change the positioning structure of the scissor hinge of conventional keys, thus avoiding a high precision stamping process for the base and reducing processing difficulties and costs. The key assembly method only requires the scissor hinge to be placed on the middle plate, thus simplifying the whole assembly process and its manipulations.

Description

Keyboard key and assembly method thereof

The invention relates to a notebook computer keyboard, a keyboard key and an assembly method thereof. Background technique

Laptops, which are called laptops because of their light weight and portability, are popular among people and become an important tool for people to work, study, live and play. The notebook is turned on and the display is erected vertically to the user; the keyboard of the laptop is mounted horizontally on the main unit at an angle of approximately 90 degrees to the display for operation. The size of a laptop keyboard is usually similar to that of a monitor, but its thickness is only about 4 to 6 mm, or even thinner. This thickness makes the structure and production assembly methods used in conventional desktop keyboards unusable for notebook keyboards.

The keys of a conventional or existing laptop keyboard use a scissor-foot structure. As shown in Fig. 1, the button includes a keycap 110, a scissor foot 120, a silicone body 130, a sensing piece 140, and an aluminum plate 150. The scissor foot 120 is composed of two inner and outer brackets which are mutually intersecting and rotatable. The opposite ends of each bracket are provided with limiting posts 121 and 122, wherein the limiting post 121 is used for hooking with the key cap 110 (in the figure) Not shown) are connected, and the stop post 122 is for connection with the hook 152 on the aluminum plate 150. The assembly method of the button shown in Figure 1 is as follows:

First, the aluminum plate 150 is placed horizontally on the workbench.

Next, the sensing piece 140 with the silicone body 130 is placed on the aluminum plate 150. The sensing piece 140 is provided with a plurality of through holes 141 corresponding to the hooks 152 on the aluminum plate 150 so that the hooks 152 are passed therethrough during the process of placing the sensing sheets 140.

Next, the scissor foot 120 is placed on the silicone body 130, and the limiting post 122 at the lower portion of the scissor foot 120 is snapped into the corresponding hook 152 which is passed through the through hole 141 of the sensing piece 140. In this case, the sensing piece 140 is sandwiched between the scissor foot 120 and the aluminum plate 150.

Next, the limit post 121 on the upper portion of the scissor foot 120 is snapped into the hook on the inner side of the keycap 110 to complete the assembly of the button. When the keycap 110 is pressed, the two brackets of the scissor foot 120 are stacked, and the silicone colloid 130 is retracted by pressing, and the button is pressed. After being loosened, the silicone body 130 rebounds, the keycap 110 is raised, and the rise of the keycap 110 opens the scissor foot 120 through the limit post 121.

The prior art button assembly method described above is a bottom-up assembly method, the most notable feature of which is that the scissor-foot 120 is snapped into the corresponding hook 152 of the aluminum plate 150 from the front. In order to achieve the above assembly method, it is first necessary to punch out a high-precision aluminum plate 150. According to the keys on the standard laptop keyboard Distribution, the aluminum plate 150 needs to punch out more than 80 punches 151 and further form the positioning hook 152, and the height and angle of the hook 152 have strict requirements. Secondly, when assembling the scissor foot 120, the two brackets of the scissor foot 120 are firstly folded and buckled, and then the limiting post 122 of the scissor foot 120-end is buckled into the corresponding hook 152 of the aluminum plate 150 in the correct direction. Then, using the toughness of the plastic constituting the scissor foot 120, the limit post 122 at the other end of the scissor foot 120 is buckled into the corresponding hook on the aluminum plate 150, and finally the key cap 110 is fastened to the scissor foot 120. It takes a lot of labor and time, and it is not easy to form a running operation. In addition, the cost of high-precision aluminum sheets is also high. In order to reduce the difficulty of processing aluminum sheets, people use plastic injection methods to punch aluminum sheets and then inject plastic into aluminum sheets to form high-precision hooks or fasteners. This method uses the precision of plastic molds to replace the high aluminum sheets. Accuracy, which reduces the accuracy of the aluminum plate, of course, also reduces the cost of the aluminum plate, but it increases the cost of injection molding.

In the prior art, there is also a button structure provided with a middle plate, such as the button structure disclosed in the Chinese patent document CN2468150Y, the button structure includes a bottom plate, and a conductive film and an elastic member which are sequentially arranged on the top surface of the bottom plate from bottom to top. , plastic plate, bridge (also known as scissors feet in the industry) and key caps. The conductive film is provided with a line and a conductive contact; the elastic member is placed on the conductive film and placed between the bottom plate and the keycap. The bridge is composed of a first frame and a second frame hinged in the middle. The width of the second frame is slightly larger than the width of the second frame is slightly larger than the width of the first frame, so that the first frame can be nested inside the second frame; the two ends of the first frame are respectively provided with the connection portion and the key cap of the plastic intermediate plate The connecting shaft hinged or slidably connected; the plastic intermediate plate connecting portion is hinged by a "Z" shaped connecting portion. The second frame has a "U" shape, and the unsealed side is provided with a bridge connecting shaft which is slidably connected to the plastic intermediate plate connecting portion, and the closed side thereof is provided with a bridge connecting shaft hinged to the key cap connecting portion. As can be seen from the description of the specification of the patent document 2-12, the connecting portion of the middle plate is disposed on the upper surface, and the middle plate has a circular hole, but the circular hole is smaller than the bridge frame, and the bridge frame can only be assembled from the above, so the centering The accuracy of the board connection is high, resulting in a high production cost of the board. On the other hand, the shackle-type structure is complicated to assemble, and it is difficult to form a running operation, and the assembly cost is high. Invention disclosure

The technical problem to be solved by the present invention is to provide a keyboard button with low accuracy requirements, simple structure and easy assembly, and the above-mentioned defects of high accuracy, high cost, difficult assembly, and low flow-through operation. Its assembly method.

A technical solution adopted by the present invention to solve the technical problem thereof is: a keyboard button comprising a substrate, a sensing piece with a silicone body, a scissor foot and a key cap, characterized in that the method further comprises a first surface and a second surface a middle plate of the surface, the middle plate is provided with a through hole penetrating the first surface and the second surface, and a second surface of the middle plate is provided with a groove, a limiting post of the lower portion of the scissor foot is received in the groove, and a limiting post of the upper portion of the scissor foot passes through the through hole The first surface of the board is fastened to the keycap, and the sensing piece and the substrate are fixed to the second surface of the middle board.

In an embodiment of the invention, the through holes are square holes, and the grooves are respectively formed at four corners of the square holes.

In one embodiment of the invention, the through holes are elliptical holes, and the grooves are four, and the four grooves are symmetric along the long axis and the short axis of the ellipse. When injection molding is used, the elliptical hole is easy to manufacture, and it is less likely to cause stress concentration and is also durable.

In one embodiment of the present invention, the through hole is a square-like hole formed by a circular arc of four segments, and the grooves are four and are respectively disposed at four corners of the square-like hole. For medium plates made of materials with good mechanical properties, this structure has a very good effect on reducing the weight of the middle plate.

In one embodiment of the present invention, the through hole is a long hole having a circular arc at both ends, and two grooves are disposed at two ends of the long hole.

In an embodiment of the invention, the arc of the two ends of the long hole is an arc that is concave inward.

In one embodiment of the present invention, the scissor foot includes an inner bracket and an outer bracket that are mutually orthogonal and rotatable, and a limiting post on an upper portion of the inner bracket is symmetrically disposed with a limiting post on an upper portion of the outer bracket, and the The limiting post at the lower part of the inner bracket is symmetrically arranged with the limiting post at the lower part of the outer bracket.

In one embodiment of the present invention, two central ends of the inner bracket are provided with two pivots pivotally connected to two corresponding pivot holes on the outer bracket, and two pivot holes of the outer bracket The inner ends are respectively provided with guiding slopes.

In one embodiment of the invention, the sensing sheet and the substrate are fastened to the second surface of the intermediate plate by screws or heat fusion welding.

In the embodiment of the present invention, the plate is 0. 3~0. 8mm thick flat plate.

In one embodiment of the present invention, the depth of the groove is slightly larger than the diameter of the limiting post to completely accommodate the limiting post therein, and the width of the groove is larger than the diameter of the limiting post In order to facilitate the sliding of the limiting post in the width direction of the groove.

In one embodiment of the invention, the first surface further has a protrusion, the protrusion being located opposite the groove of the second surface.

Another technical solution of the present invention is a method for assembling a keyboard key scissors foot, which is specifically used for assembly between a middle plate and a scissor foot, and is characterized in that it comprises the following steps: a through hole is provided and the bottom surface has a middle plate of the groove, providing a scissor leg with a limit post; the scissor foot from the middle plate The bottom surface is placed in the through hole, and the limiting post is accommodated in the groove.

In one embodiment of the present invention, the through hole is one of a square hole, a long hole having a circular arc at both ends, an elliptical hole, and a square hole composed of four outer arcs.

A further technical solution of the present invention is a method for assembling a keyboard button, characterized in that the method comprises the following steps: providing a middle plate having a first surface and a second surface, wherein the middle plate is provided with a square hole penetrating the first surface and the second surface, and the second surface of the middle plate is respectively formed with a groove along four corners of the square hole; the scissors foot is from the second surface of the middle plate Loading into the square hole such that a limiting post of the lower portion of the scissor foot is received in the groove and a limiting post of the upper portion of the scissor foot passes through the square hole from the first of the middle plate a surface; fixing the sensor sheet with the silicone body and the substrate to the second surface of the middle plate; and fastening the key cap to the limiting post on the upper portion of the scissor foot.

In one embodiment of the invention, the step of loading the scissor foot into the square hole from the second surface of the middle plate comprises: placing the first surface of the middle plate downward, the second surface facing upward Place.

In an embodiment of the present invention, the step of fastening the key cap to the limiting post of the upper portion of the scissor foot further comprises: flipping the middle plate on which the sensing piece and the substrate are mounted by 180 degrees to make the middle The first surface of the plate faces upward and the second surface faces downward.

In one embodiment of the present invention, the step of fixing the sensing piece with the silicone body and the substrate to the second surface of the intermediate plate comprises: tightening the sensing piece and the substrate by screws or heat fusion Fastened to the second surface of the intermediate plate.

The latter two technical solutions of the present invention each have a specific technical feature that contributes to the prior art by placing the scissor foot from the second surface (ie, the bottom surface) of the middle plate into the through hole of the middle plate, and the position of the limiting post is placed in the groove. Thus, as an application, the latter two technical solutions are also an assembly method for the structure or part of the structure of the first technical solution to contribute to the prior art, and thus are proposed as one application.

The keyboard button and the assembling method thereof of the invention have the following beneficial effects: The keyboard button of the invention changes the limit structure of the traditional button scissors foot, and the lower portion of the scissors foot is limited to the corresponding groove on the bottom surface of the middle plate, without In the assembly method, the scissor legs are buckled into the corresponding hooks on the substrate from the front side, thereby eliminating the high-precision stamping process on the substrate, which greatly reduces the processing difficulty and cost. Moreover, the button assembly method of the present invention only needs to easily place the scissors feet on the middle plate, thereby reducing the assembly action, reducing the assembly difficulty, making the entire assembly process simple and easy to operate, thereby improving the operation speed of the flow production line.

DRAWINGS

1 is a burst of a keyboard button in the prior art 2 is a schematic exploded view of a keyboard button according to a first embodiment of the present invention;

3 is a schematic view showing the assembling process of the keyboard keys of FIG. 2, showing the mounting of the scissor feet; FIG. 4 is a schematic view showing the assembling process of the keyboard keys of FIG. 2, showing the installation of the silicone body and the sensing piece ;

Figure 5 is a schematic view showing the assembly process of the keyboard keys of Figure 2, showing the mounting of the substrate; Figure 6 is a schematic view showing the assembly process of the keyboard keys of Figure 2, showing the mounting of the keycap; Figure 7 is Schematic diagram of the exploded structure of the scissor foot in the first embodiment of the present invention;

Figure 8 is a schematic view showing the entire structure of a middle plate used in a keyboard according to the first embodiment of the present invention; Figure 9 is an enlarged view of a partial structure of Figure 8;

Figure 10 is an enlarged plan view showing the structure of a keyboard button according to a second embodiment of the present invention;

12 is a schematic exploded view of a keyboard button according to a third embodiment of the present invention;

Figure 13 is a schematic exploded view of a keyboard button of a fourth embodiment of the present invention. Embodiment of the invention

The keyboard button provided by the invention adds a middle plate, and the lower part of the scissors foot is limited by the middle plate, thereby simplifying the structure of the keyboard keys. Due to the appearance of the middle plate, the assembly of the scissors feet becomes simple and easy, and thus the assembly method of the keyboard keys of the present invention is also simplified.

Specifically, as shown in FIG. 2, a schematic diagram of an explosion structure of a keyboard button according to the first embodiment of the present invention is shown. The keyboard keys shown in the drawing include a keycap 210, a middle plate 260, a scissor foot 220, a sensing piece 240 to which the silicone body 230 is fixed, and a substrate 250. The keycap 210 is any suitable keycap of the prior art, and the inside of the keycap 210 is provided with a hook for mounting (not shown). The silicone body 230 can be attached to the sensing sheet 240 in any suitable form known in the art. The substrate 250 is a common flat plate for supporting the keys, and may be an aluminum plate. The scissor foot 220 includes an inner bracket 222 and an outer bracket 224 which are mutually orthogonal and rotatable. A middle portion of the inner bracket 222 and the outer bracket 224 overlaps with a mounting hole 226 through which the scissor foot 220 is sleeved on the silicone body 230. Referring to FIG. 7, the two sides of the two sides of the inner bracket 222 are provided with two pivots 229. The two sides of the two sides of the outer bracket 224 are correspondingly provided with two pivot holes 227 for receiving the pivot 229. Therefore, the inner bracket 222 and the outer bracket 224 can form a scissor structure by the mutual combination of the pivot 229 and the pivot hole 227. Moreover, the inner end of the pivot hole 227 of the outer bracket 224 forms a guiding slope 228 so that the pivot 229 slides into the pivot hole 227 along the guiding slope 228. Referring to FIG. 2, the opposite ends of the inner bracket 222 of the scissor foot 220 are respectively provided with a pair of limiting posts 222a and a pair of limiting posts 222b, wherein the limiting post 222b is used for engaging in the hook of the keycap 210. The limiting post 222a is for snapping onto the middle plate 260. Similarly, A pair of limiting posts 224a and a pair of limiting posts 224b are respectively disposed at opposite ends of the outer bracket 224 of the scissor foot 220. The limiting post 224b is used for engaging in a corresponding hook of the key cap 210, and the limiting post 224a It is used for snapping onto the middle plate 260. The role of the scissor foot and its working principle are well known to those skilled in the art and will not be described in detail herein. The middle plate 260 has a first surface (ie, front surface, top surface) 261 facing the keycap 210 and a second surface (ie, bottom surface) 264 facing the sensing sheet 240 (see FIG. 3), and the middle plate 260 is provided with a receiving scissors foot A square hole 262 of 220 extends through the first surface 261 and the second surface 264 of the intermediate plate 260. In addition, the second surface 264 of the middle plate 260 is formed with a groove 263 at each of the four corners of the square hole 262 for receiving the corresponding limit on the inner and outer brackets 222 and 224 of the scissor foot 220. Columns 222a and 224a. The plate 260 may be a plastic plate having a thickness of 0.3 to 0.8 mm or other suitable material. The sensing sheet 240 and the substrate 250 are fixed to the second surface 264 of the intermediate plate 260 by screws or heat fusion welding, thereby defining the limiting posts 222a and 224a in the recess 263 without falling out. Specifically, as shown in FIG. 10, the depth h of each groove 263 is slightly larger than the diameters of the limiting posts 222a and 224a, and the limiting posts 222a and 224a can be completely accommodated therein; the width w of each groove 263 is large. The diameters of the limiting posts 222a and 224a are such that during the cross-movement of the inner and outer brackets 222 and 224 of the scissor foot 220, the limiting posts 222a and 224a are free to slide along the width direction of the recess 263.

The assembly process of the keyboard keys shown in Fig. 2 will be described in detail below with reference to Figs.

First, install the scissor feet 220, as shown in Figure 3.

First, the intermediate plate 260 is placed horizontally on the table with its first surface 261 facing downward (i.e., facing the table) with the second surface 264 facing up. Then, the scissor foot 220 is placed from the second surface 264 of the intermediate plate 260 into the square hole 262 of the middle plate 260 to constitute the inner bracket 222 of the scissor foot 220 and the lower end of the outer bracket 224 (relative to the assembled button). The limiting posts 222a and 224a are respectively placed in the grooves 263 at the four corners of the square hole 262, thereby limiting the lower portions of the inner bracket 222 and the outer bracket 224, and the upper portions of the inner bracket 222 and the outer bracket 224 (including corresponding The stop posts 222b and 224b) extend through the square holes 262 from the first surface 261 of the intermediate plate 260 (see Figure 4).

Specifically, as shown in FIG. 3, the inner bracket 222 of the scissor foot 220 and the lower limiting posts 222a and 224a of the lower outer bracket 224 project outwardly from the side so as to be embedded in the recesses 263 at the four corners of the square hole 262. In addition, the scissor foot 220 adopts a symmetrical limit design, that is, the upper limit post 222b of the inner bracket 222 and the upper limit post 224b of the outer bracket 224 are symmetrically disposed, and the lower limit post 222a and the outer part of the inner bracket 222 The limiting post 224a at the lower portion of the bracket 224 is also symmetrically disposed. The advantage of this design is that the scissor foot 220 can be rotated 180 degrees on the middle plate 260, gp, and the scissors foot 220 in Fig. 3 can be rotated into the square hole 262 after being rotated 180 degrees, thereby eliminating the worker. Identify the direction of the scissors feet during running time.

Secondly, the silicone body 230 and the sensing piece 240 are mounted as shown in FIG.

The sensing piece 240 with the silicone body 230 is placed on the second surface 264 of the intermediate plate 260, and the silicone body 230 extends into the mounting hole 226 in the scissor foot 220.

Third, the mounting substrate 250, as shown in FIG. 5, places the substrate 250 on the sensing sheet 240. Fourthly, the middle plate 260, the sensing piece 240 and the substrate 250 are fastened to clamp the inner bracket 222 of the scissor foot 220 and the lower limiting posts 222a and 224b of the outer bracket 224 on the second surface 264 of the intermediate plate 260. In the groove 263. In a specific embodiment of the present invention, the intermediate plate 260 and the sensing piece 240 and the substrate 250 may be fastened by screws or may be directly fastened by hot melt welding. For example, in the embodiment shown in FIGS. 8 and 9, the second surface 308 of the middle plate 300 is provided with an upwardly extending strut 306 which can be inserted into the corresponding opening of the sensing piece and the substrate to be nested or thermally melted. Solder fixed.

Fifth, install the keycap 210, as shown in Figure 6.

First, the components assembled through the front four turns are turned 180 degrees with the middle plate 260 such that the first surface 261 of the middle plate 260 faces upward. Then, the key cap 210 is fastened to the scissor foot 220, so that the inner bracket 222 of the scissor foot 220 and the upper limiting posts 222b and 224b of the outer bracket 224 are respectively buckled into the corresponding hooks on the inner side of the key cap 210, thereby completing the entire button. Assembly.

When the keycap 210 is pressed during use, the two brackets of the scissor foot 220 are gradually horizontally stacked, and the pressing force causes the silicone body 230 to retract. The lower limiting posts 222a and 224b of the two brackets of the scissor foot 220 are supported by the sensing piece 240, and slide outward on the sensing piece 240 along the width direction of the groove 263 during the process of stacking the two brackets until the The button is pressed to the lowest point, at which time the limit posts 222a and 224a of the two brackets are opened to the maximum distance. After the button is released, the silicone body 230 rebounds, and the key cap 210 is raised, and then the two brackets of the scissor foot 220 are gradually crossed, so that the lower limit posts 222a and 224a of the two brackets are along the groove 263 on the sensing piece 240. The width direction slides inward until it abuts against the inner side of the recess 263, at which time the limit posts 222a and 224a are brought together to a minimum distance, and the key cap 210 is raised to the highest point. In another embodiment of the present invention, the sensing sheet 240 may be provided with a through hole corresponding to the groove 263 of the middle plate 260. During use, the limiting posts 222a and 224a of the lower portions of the two brackets of the scissor foot 220 are used. The substrate 250 is supported by the through holes in the sensing sheet 240, and slides on the substrate 250 as the two brackets intersect and overlap.

The present invention has been described above with reference to a specific embodiment of a keyboard button and an assembly method thereof. It is obvious that the above button structure of the present invention can be applied to each button of the entire keyboard. For the entire keyboard, the structure of the middle plate added in an embodiment of the present invention is as shown in FIG. 8 and FIG. 9. The middle plate 300 having the shape adapted to the keyboard is provided with a plurality of square holes 302 corresponding to a plurality of key positions. The bottom surface 308 of the middle plate 300 is provided with corresponding grooves 304 along the four corners of each square hole 302. When the keyboard is assembled, first turn the middle plate over and place it on the bottom surface. Upward, then the scissors feet corresponding to the respective key positions are placed in the respective square holes 302, and the limit posts on the scissors feet are buckled into the grooves 304, and then the integral sensing piece having a plurality of silicone bodies is placed in the middle On the board, each silicone body is inserted into the corresponding scissors foot, and then the whole substrate is placed and the middle plate, the sensing piece and the substrate are fastened. Then, the middle plate 300 is flipped 180 degrees so that the front side faces upward, so that the respective key caps can be fastened to the corresponding limit posts of the scissors feet to complete the assembly of the entire keyboard.

The second embodiment of the present invention is also a keyboard button. Referring to FIG. 1 , the keyboard member includes a key cap 410, a scissor foot 420, a silicone body 430, a sensing sheet 440, a substrate 450, and a middle plate 460. The difference from the first embodiment of the present invention is that the through hole on the middle plate 460 is not a square hole, but an irregular hole 461 composed of a circular arc of four segments facing inward. In this embodiment, the first surface (ie, the top surface of the middle plate) further has a protrusion 463, and the protrusion 463 is located opposite to the groove 462 of the second surface to reduce the thickness of the middle plate 460. The depth of the groove 462 is not affected, and the size of the scissors foot limiting column 421 is not changed, and the connection strength between the scissors foot and the middle plate is ensured. In this embodiment, the middle plate 460 is made of high-strength plastic, and the material itself has good mechanical properties. This structure has a very good effect on reducing the weight of the middle plate. The assembly method of this embodiment is the same as that of the first embodiment described above.

A third embodiment of the present invention is also a keyboard button. Referring to FIG. 12, the keyboard member includes a keycap 510, a scissor foot 520, a silicone body 530, a sensing sheet 540, a substrate 550, and a middle plate 560. The portion is further provided with a limiting post 521. The difference between this embodiment and the first embodiment of the present invention is that the through hole in the middle plate 560 is not a square hole but an elliptical hole 561. In this embodiment, the first surface (ie, the top surface of the middle plate) further has a protrusion 563, and the position of the protrusion 563 is opposite to the groove 562 of the second surface. The assembly method of the embodiment and the foregoing One embodiment is the same.

A fourth embodiment of the present invention is also a keyboard button. Referring to FIG. 13, the keyboard member includes a keycap 610, a scissor foot 620, a silicone body 630, a sensing sheet 640, a substrate 650, and a middle plate 660. The portion is further provided with a limiting post 621. The difference between this embodiment and the first embodiment of the present invention is that the through hole on the middle plate 660 is not a square hole, but a long hole 661 with a circular arc at both ends. The two ends of the long hole are respectively provided with two grooves 662, and the two ends of the long holes are arcs which are concave inward. In this embodiment, the first surface (ie, the top surface of the middle plate) further has a protrusion 663, and the position of the protrusion 663 is opposite to the groove 662 of the second surface. The assembly method of the embodiment and the foregoing One embodiment is the same. Industrial application

The above embodiments are only preferred embodiments, and variations in the specific connection manner of the limiting post and the groove and the specific hole shape of the through hole are within the scope of the present invention within the scope of the claims of the present invention.

Claims

Claim

A keyboard button comprising a substrate, a sensing piece with a silicone body, a scissor foot and a key cap, further comprising a middle plate having a first surface and a second surface, the middle plate being provided with a through hole penetrating the first surface and the second surface, and a second surface of the middle plate is provided with a groove, and a limiting post of the lower portion of the scissor foot is received in the groove and the scissors foot The upper limiting post passes from the through hole and the first surface of the middle plate is fastened to the key cap, and the sensing piece and the substrate are fixed to the second surface of the middle plate.

2. The keyboard button according to claim 1, wherein the through hole is a square hole, and the grooves are respectively formed along four corners of the square hole.

3. The keyboard button according to claim 1, wherein the through hole is an elliptical hole, and the groove is four, and the four grooves form a symmetry along a long axis and a short axis of the ellipse. .

The keyboard button according to claim 1, wherein the through hole is a square-shaped hole formed by a circular arc of four segments, and the groove is four and is respectively disposed on the square hole. Corner.

The keyboard button according to claim 1, wherein the through hole is a long hole having a circular arc at two ends, and two grooves are disposed at two ends of the long hole.

6. The keyboard button according to claim 1, wherein the arc of the two ends of the long hole is an arc that is concave inward.

The keyboard button according to any one of claims 1 to 6, wherein the scissor foot includes an inner bracket and an outer bracket that are mutually orthogonal and rotatable, and a limiting post on the upper portion of the inner bracket is The limiting pillars on the upper part of the outer bracket are symmetrically arranged, and the limiting pillars in the lower part of the inner bracket are symmetrically arranged with the limiting pillars in the lower part of the outer bracket.

The keyboard button according to claim 7, wherein two sides of the two sides of the inner bracket are pivotally connected to two corresponding pivot holes on the outer bracket, and the The inner ends of the two pivot holes of the outer bracket are respectively provided with guiding slopes.

The keyboard key according to any one of claims 1 to 6, wherein the sensing piece and the substrate are fastened to the second surface of the intermediate plate by screws or heat fusion welding.

The thickness of the substrate is 0. 3~0. 8mm thick. The thickness of the substrate is 0. 3~0. 8mm thick Tablet.

The keyboard button according to any one of claims 1 to 6, wherein the depth of the groove is slightly larger than the diameter of the limiting post to completely accommodate the limiting post therein. The width of the groove is larger than the diameter of the limit post so that the limit post slides in the width direction of the groove.

The keyboard key according to any one of claims 1 to 6, wherein the first surface further has a protrusion, and the protrusion is located opposite to the groove of the second surface.

13. A method for assembling a keyboard button scissor foot, which is specially used for assembling between a middle plate and a scissor foot, and is characterized in that the following steps are included:

Providing a middle plate having a through hole and having a groove on the bottom surface thereof, providing a scissors leg with a limiting post; placing the scissor foot from the bottom surface of the middle plate into the through hole, the limiting post It is placed in the groove.

The method for assembling a keyboard key scissor foot according to claim 13, wherein the through hole is a square hole, a long hole with a circular arc at both ends, an elliptical hole, and is composed of four outer protruding arcs. One of the class square holes.

15. A method of assembling a keyboard button, the method comprising the steps of: providing a middle plate having a first surface and a second surface, the middle plate being provided to penetrate the first surface and a square hole of the second surface, and the second surface of the middle plate is respectively formed with a groove along four corners of the square hole;

Inserting a scissor foot from the second surface of the middle plate into the square hole, such that a limit post of the lower portion of the scissor foot is received in the groove and a limit post of the upper portion of the scissor foot is The square hole passes through the first surface of the middle plate;

Fixing the sensing piece with the silicone body and the substrate to the second surface of the intermediate plate;

The key cap is fastened to the limit post on the upper portion of the scissor foot.

16. The assembly method according to claim 15, wherein the step of loading the scissor foot into the square hole from the second surface of the intermediate plate comprises: placing the first surface of the intermediate plate Place down and the second surface facing up.

The assembling method according to claim 16, wherein the step of fastening the key cap to the upper limit post of the scissor foot further comprises: a middle plate to which the sensing piece and the substrate are to be mounted Flip 180 degrees so that the first surface of the middle plate faces upward and the second surface faces downward.

The assembling method according to claim 15, wherein the step of fixing the sensing piece with the silicone body and the substrate to the second surface of the intermediate plate comprises: The substrate is fastened to the second surface of the intermediate plate by screws or heat fusion welding.