CN201590361U

CN201590361U - Keyboard button

Info

Publication number: CN201590361U
Application number: CN2009203514105U
Authority: CN
Inventors: 袁建平
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-21
Filing date: 2009-12-28
Publication date: 2010-09-22
Anticipated expiration: 2019-12-28

Abstract

The utility model relates to a keyboard button which includes a substrate, an inductive sheet provided with a colloidal silica body, a scissor and a keycap; the keyboard button also includes a middle board provided with a first surface and a second surface; the middle board is provided with a through hole penetrating the first surface and the second surface; the second surface of the middle board is provided with a groove along the edge of the through hole; a limitation post at the lower part of the scissor is arranged in the groove and a limitation post at the upper part of the scissor penetrates the first surface of the middle board from the through hole and is buckled with the keycap; and the inductive sheet and the substrate are fixedly arranged on the second surface of the middle board. The keyboard button uses the middle board to change the limitation structure of the scissor of the traditional button, which omits the high precision punching and processing on the substrate and greatly reduces the processing difficulty and cost.

Description

A kind of keyboard

Technical field

The utility model relates to the keyboard of notebook computer, more particularly, relates to a kind of keyboard.

Background technology

Notebook computer is subjected to people's popular welcome owing to characteristics such as in light weight, as to be easy to carry are called as laptop computer, becomes a kind of important tool of people's work, study, life, amusement.

Open notebook computer, display screen stands vertically, user oriented; The keyboard of notebook computer then level is installed on the main frame, becomes to be similar to an angle of 90 degrees with display, for use in operation.Keyboard of notebook computer size is close with display usually, but its thickness then has only about 4～6mm, even thinner.This thickness makes structure and production and assembly method that the conventional desktop computor-keyboard is adopted be not useable for keyboard of notebook computer.

Button traditional or existing keyboard of notebook computer adopts the scissors leg structure.As shown in Figure 1, this button comprise keycap 110, scissors pin 120, colloidal silica 130, sensing chip 140 and, aluminium sheet 150.Scissors pin 120 is configured to by mutual intersection and rotating inside and outside two, the end relatively of each support is provided with

limited post

121 and 122, wherein limited post 121 is used for being connected with grab (not shown) in the keycap 110, and limited post 122 is used for being connected with grab 152 on the aluminium sheet 150.The assemble method of this button shown in Figure 1 is as follows:

At first, aluminium sheet 150 is lain in a horizontal plane on the workbench.

Then, the sensing chip 140 that will have a colloidal silica 130 is placed on the aluminium sheet 150.Sensing chip 140 be provided with aluminium sheet 150 on hook 152 corresponding a plurality of through holes 141 hook 152 therefrom passes in the process of sensing chip 140 so that place.

Then, scissors pin 120 is enclosed within on the colloidal silica 130, and the limited post 122 of scissors pin 120 bottoms is buckled among the corresponding grab 152 that passes from the through hole 141 of sensing chip 140.Like this, sensing chip 140 just is sandwiched between scissors pin 120 and the aluminium sheet 150.

Then, the limited post 121 on scissors pin 120 tops is buckled among the grab of keycap 110 inboards, just finish the assembling of button.When pushing keycap 110, two supports of scissors pin 120 are folded mutually, and pressing force makes colloidal silica 130 retractions, and this button is pressed.After unclamping, keycap 110 is risen in colloidal silica 130 bounce-backs, and the rise of keycap 110 is opened scissors pin 120 by limited post 121.

Existing above-mentioned key-press assembling method be a kind of from down and on assemble method, its outstanding feature is that scissors pin 120 is buckled into from the front among the corresponding grab 152 of aluminium sheet 150.In order to realize above-mentioned assemble method, at first need to stamp out the aluminium sheet 150 of high precision.According to the distribution of button on the standard keyboard of notebook computer, need to go out on the aluminium sheet 150 more than 80 punching 151 and and then form positioning hanger 152, and link up with 152 height and angle strict requirement all arranged.Secondly, when assembling scissors pin 120, also detain two supports intersection intussusceptions of scissors pin 120 real earlier, by correct direction the limited post 122 of scissors pin 120 1 ends is buckled on the aluminium sheet 150 in the corresponding hook 152 then, utilize the toughness of the plastics of forming scissors pin 120 then, the limited post 122 of scissors pin 120 other ends is buckled in the hook corresponding on the aluminium sheet 150, again keycap 110 is buckled on the scissors pin 120 at last, such assembling link need spend a large amount of artificial and time, is difficult for forming continuous productive process.

In addition, the cost of high precision aluminium sheet is also very high.In order to reduce the difficulty of processing of aluminium sheet, people utilize plastic injection-moulded method, earlier to the aluminium sheet punching, then with plastic injection-moulded to aluminium sheet, form the hook or the fastener of high precision, this method utilizes the precision of mould of plastics to replace the high accuracy of aluminium sheet, thereby has reduced the requirement of aluminium sheet precision, certainly also reduce the cost of aluminium sheet, but but increased the injection moulding cost.

In the prior art, the press-key structure that also has plate in a kind of being provided with, as the disclosed press-key structure of Chinese patent literature CN2468150Y, this press-key structure comprise base plate, and from bottom to top successively preface be located at plate, crane span structure (people also is referred to as the scissors pin in the industry) and keycap in the conductive film, flexible member, plastic cement of plate top surface.Conductive film is provided with circuit and conductivity contact; Flexible member be placed on the conductive film and place base plate and keycap between.Crane span structure is to be made of middle part hinged first framework and second framework.The width of second framework is slightly larger than the width that second framework is slightly larger than first framework, makes first framework just can be nested in the second framework inboard; The two ends of first framework be respectively arranged with plastic cement in the hinged or connecting axle that slips of plate connecting portion and keycap connecting portion; The plate connecting portion is " Z " font connecting portion twisting in the plastic cement.Second framework is " U " shape, its not the closed side be provided with plastic cement in the crane span structure connecting axle that slips of plate connecting portion, its closed side is provided with the crane span structure connecting axle hinged with the keycap connecting portion.By the Figure of description 2-10 of this patent documentation as can be known, the connecting portion of middle plate is arranged at upper surface, and middle plate has a circular hole, but this circular hole is less than crane span structure, crane span structure can only the mode of buckling be assembled from above, so the required precision of centering plate connecting portion is higher, the cost of manufacture of plate is higher in causing.On the other hand, hung and buckled structure assembling is cumbersome, is difficult for forming continuous productive process, assembly cost height.

The utility model content

Therefore, the technical problems to be solved in the utility model is that difficult at above-mentioned required precision height, cost height, the assembling of prior art, as to be not easy to continuous productive process defective provides a kind of to less demanding, the simple in structure easy-to-assemble keyboard of element precision.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of keyboard, comprise substrate, the sensing chip that has colloidal silica, scissors pin and keycap, it is characterized in that, comprise that also one has the middle plate of first surface and second surface, plate is provided with the through hole that penetrates described first surface and second surface in described, and the second surface of plate is provided with groove in described, the limited post of described scissors underfooting portion be placed in the described groove and the limited post on described scissors pin top from described through hole pass described the first surface and the described keycap snapping of plate, described sensing chip and substrate be fixed in described in the second surface of plate.

Among the embodiment of the present utility model, described through hole is a square hole, and described groove forms respectively for four angles along described square hole.

Among the embodiment of the present utility model, described through hole is a slotted eye, and described groove is four, and four grooves all constitute symmetry along described long axis of ellipse and minor axis.During the employing injection molding, slotted eye is made easily, and its difficult generation stress is concentrated, also has durable characteristics.

Among the embodiment of the present utility model, described through hole is the class square opening that the circular arc of four sections evaginations constitutes, and described groove is four and is arranged at four angles of class square opening respectively.For the middle plate that the material of better mechanical property is made, this structure has very desirable effect for the weight of plate in alleviating.

Among the embodiment of the present utility model, described through hole is that two ends are the slotted hole of circular arc, and two ends of described slotted hole respectively are provided with two grooves.

Among the embodiment of the present utility model, the circular arc of described slotted hole two ends is inwardly prominent circular arc.

Among the embodiment of the present utility model, described scissors pin comprises mutual intersection and rotating inner support and support arm, the limited post on the limited post on described inner support top and described support arm top is symmetrical arranged, and the limited post of the limited post of described inner support bottom and described support arm bottom is symmetrical arranged.

Among the embodiment of the present utility model, two middle side parts of described inner support are provided with two pivots and are articulated in two pivot holes that correspondence is provided with on the described support arm, and two pivot hole the inners of described support arm are respectively equipped with guiding surface.

Among the embodiment of the present utility model, described sensing chip and substrate are anchored on the second surface of described middle plate by screw or sweat soldering.

Among the embodiment of the present utility model, described middle plate is the thick plastic plate of 0.3～0.8mm, and described substrate is the thick flat board of 0.3～0.8mm.

Among the embodiment of the present utility model, the diameter that the degree of depth of described groove is slightly larger than described limited post to be being contained in described limited post fully wherein, the width of described groove greater than the diameter of described limited post so that described limited post on the Width of described groove, slide.

Among the embodiment of the present utility model, described first surface also has projection, and the position of described projection is relative with the groove of described second surface.

Implement keyboard of the present utility model, have following beneficial effect: keyboard of the present utility model has changed the position limiting structure of conventional keys scissors pin, scissors underfooting portion is limited in the corresponding recesses of middle plate bottom surface, need not as traditional assemble method from the front scissors climbers are gone on the substrate the corresponding grab, thereby saved high accuracy punch process to substrate, greatly reduce difficulty of processing and cost.

Description of drawings

Fig. 1 is the blast structural representation of a kind of keyboard of the prior art;

Fig. 2 is the blast structural representation of the keyboard of first embodiment of the utility model;

Fig. 3 is that the limited post of first embodiment of the utility model is placed in the schematic diagram in the groove;

Fig. 4 is the blast structural representation of the keyboard of second embodiment of the utility model;

Fig. 5 is the blast structural representation of the keyboard of the 3rd embodiment of the utility model;

Fig. 6 is the blast structural representation of the keyboard of the 4th embodiment of the utility model.

Embodiment

The keyboard that the utility model proposes is set up plate in, in this plate the bottom of scissors pin is carried out spacing, thereby simplified the structure of keyboard.And the assemble method of keyboard of the present utility model also is simplified.

Specifically as Fig. 2, shown in Figure 3 be the structural representation of the keyboard of first embodiment of the utility model.Keyboard shown in the figure comprises keycap 210, middle plate 260, scissors pin 220, the sensing chip 240 that is fixed with colloidal silica 230 and substrate 250.Keycap 210 is any suitable keycap of the prior art, and the inboard of keycap 210 is provided with for the grab (not shown) of installing.Colloidal silica 230 can adopt any suitable form of the prior art, is fixed on the sensing chip 240.Substrate 250 is an ordinary flat, is used to button to provide support, and can be aluminium sheet.Scissors pin 220 comprises mutual intersection and rotating inner support 222 and support arm 224, and the middle part that inner support 222 and support arm 224 overlap mutually is provided with installing hole 226, and scissors pin 220 is enclosed within on the colloidal silica 230 by this installing hole 226.Two middle side parts of inner support 222 are provided with two pivots, and two middle side part correspondences of support arm 224 are provided with two pivot holes, are used for ccontaining pivot.Therefore, inner support 222 and support arm 224 can be by pivot and mutually combining of pivot hole and form the scissors structure.And the inner guiding surface that forms of the pivot hole of support arm 224 is so that pivot slips in the pivot hole along this guiding surface.Referring to Fig. 2, the opposite end of the inner support 222 of scissors pin 220 is respectively equipped with a pair of limited post 222a and a pair of limited post 222b again, and wherein limited post 222b is used for being connected in the grab of keycap 210, and limited post 222a is used for being connected in plate 260.Similarly, the opposite end of the support arm 224 of scissors pin 220 is respectively equipped with a pair of limited post 224a and a pair of limited post 224b, and wherein limited post 224b is used for being connected in the corresponding grab of keycap 210, and limited post 224a is used for being connected in plate 260.About effect and its operation principle of scissors pin is well-known to those skilled in the art, so no longer do detailed description at this.In plate 260 have first surface towards keycap 210 (i.e. front, end face) 261 and towards the second surface (being the bottom surface) of sensing chip 240, and middle plate 260 is provided with the square hole 262 of ccontaining scissors pin 220, the first surface 261 and the second surface of plate 260 during this square hole 262 runs through.In addition, four angles of the second surface upper edge square hole 262 of middle plate 260 are formed with groove 263 respectively, and this groove 263 is used for corresponding limited post 222a and the 224a on the inside and

outside support

222 and 224 of ccontaining scissors pin 220.Consider that according to keyboard thickness and intensity middle plate 260 can be that thickness is the plastic plate of 0.3～0.8mm or the plate of other suitable material.The second surface 264 of plate 260 was fixing during sensing chip 240 and substrate 250 were close to by the mode of screw or sweat soldering, thereby limited post 222a and 224a are limited in the groove 263 and can did not come off out.As shown in Figure 3, the degree of depth h of each groove 263 is slightly larger than the diameter of limited post 222a and 224a, can fully limited post 222a and 224a be contained in wherein; The width w of each groove 263 is then much larger than the diameter of

limited post

222a and 224a, so that in the process of the inside and outside support 222 of

scissors pin

220 and 224 crisscross motions,

limited post

222a and 224a can be free to slide on the Width of groove 263.

Second embodiment of the present utility model also is a kind of keyboard, with reference to figure 4, this keyboard comprises keycap 410, scissors pin 420, colloidal silica 430, sensing chip 440, substrate 450 and middle plate 460 by part, the difference of present embodiment and first embodiment of the utility model is, through hole in described on the plate 460 is not a square hole, but the irregularly-shaped hole of forming by four sections inside circular arcs of concave surface 461.In the present embodiment, described first surface (end face of plate promptly) also has projection 463, the position of described projection 463 is relative with the groove of described second surface 462, do not influence the degree of depth of groove 462 with the thickness of plate 460 in reducing, do not change the size of scissors pin limited post 421 yet, guarantee the bonding strength of scissors pin and middle plate, in the present embodiment, middle plate 460 adopts highstrenghtpistons, the better mechanical property of material itself, and this structure has very desirable effect for the weight of plate in alleviating.

The 3rd embodiment of the present utility model also is a kind of keyboard, with reference to figure 5, this keyboard comprises keycap 510, scissors pin 520, colloidal silica 530, sensing chip 540, substrate 550 and middle plate 560 by part, described scissors underfooting portion also is provided with limited post 521, the difference of present embodiment and first embodiment of the utility model is, through hole in described on the plate 560 is not a square hole, but slotted eye 561.In the present embodiment, described first surface (end face of plate promptly) also has projection 563, and the position of described projection 563 is relative with the groove of described second surface 562.

The 4th embodiment of the present utility model also is a kind of keyboard, with reference to figure 6, this keyboard comprises keycap 610, scissors pin 620, colloidal silica 630, sensing chip 640, substrate 650 and middle plate 660 by part, described scissors underfooting portion also is provided with limited post 621, the difference of present embodiment and first embodiment of the utility model is, through hole in described on the plate 660 is not a square hole, but two ends are the slotted hole 661 of circular arc, two ends of described slotted hole respectively are provided with two grooves 662, and described slotted hole two end circular arcs are inwardly prominent circular arc.In the present embodiment, described first surface (end face of plate promptly) also has projection 663, and the position of described projection 663 is relative with the groove of described second surface 662.

Claims

1. keyboard, comprise substrate, have sensing chip, scissors pin and the keycap of colloidal silica, it is characterized in that, comprise that also one has the middle plate of first surface and second surface, plate is provided with the through hole that penetrates described first surface and second surface in described, and the second surface of plate is provided with groove in described, the limited post of described scissors underfooting portion be placed in the described groove and the limited post on described scissors pin top from described through hole pass described the first surface and the described keycap snapping of plate, described sensing chip and substrate be fixed in described in the second surface of plate.

2. keyboard according to claim 1 is characterized in that described through hole is a square hole, and described groove forms respectively for four angles along described square hole.

3. keyboard according to claim 1 is characterized in that described through hole is a slotted eye, and described groove is four, and four grooves all constitute symmetry along described long axis of ellipse and minor axis.

4. keyboard according to claim 1 is characterized in that, described through hole is the class square opening that the circular arc of four sections evaginations constitutes, and described groove is four and is arranged at four angles of class square opening respectively.

5. keyboard according to claim 1 is characterized in that, described through hole is that two ends are the slotted hole of circular arc, and two ends of described slotted hole respectively are provided with two grooves.

6. keyboard according to claim 1 is characterized in that, the circular arc of described slotted hole two ends is inwardly prominent circular arc.

7. according to any described keyboard of claim 1 to 6, it is characterized in that, described scissors pin comprises mutual intersection and rotating inner support and support arm, the limited post on the limited post on described inner support top and described support arm top is symmetrical arranged, and the limited post of the limited post of described inner support bottom and described support arm bottom is symmetrical arranged.

8. the keyboard of stating according to claim 7 is characterized in that, two middle side parts of described inner support are provided with two pivots and are articulated in two pivot holes that correspondence is provided with on the described support arm, and two pivot hole the inners of described support arm are respectively equipped with guiding surface.

9. according to any described keyboard of claim 1 to 6, it is characterized in that described sensing chip and substrate are anchored on the second surface of described middle plate by screw or sweat soldering.

10. according to any described keyboard of claim 1 to 6, it is characterized in that described middle plate is the thick plastic plate of 0.3～0.8mm, described substrate is the thick flat board of 0.3～0.8mm.

11. according to any described keyboard of claim 1 to 6, it is characterized in that, the diameter that the degree of depth of described groove is slightly larger than described limited post to be being contained in described limited post fully wherein, the width of described groove greater than the diameter of described limited post so that described limited post on the Width of described groove, slide.

12. according to any described keyboard of claim 1 to 6, it is characterized in that described first surface also has projection, the position of described projection is relative with the groove of described second surface.