CN101271791A - Key switch construction - Google Patents
Key switch construction Download PDFInfo
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- CN101271791A CN101271791A CNA2008100093994A CN200810009399A CN101271791A CN 101271791 A CN101271791 A CN 101271791A CN A2008100093994 A CNA2008100093994 A CN A2008100093994A CN 200810009399 A CN200810009399 A CN 200810009399A CN 101271791 A CN101271791 A CN 101271791A
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- key switch
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Abstract
The invention provides a key switch structure of realizing thin without damaging the key cap. A resin sheet (25) is disposed at the upper part of the membrane (26) with a contact point part. A first supporting part (25a) and a second supporting part (25b) are formed on the resin sheet (25). The first supporting part (25a) has an oblong part (25d), and the flat end (22c) of the first connecting rod part (22) is overlapped and fixed on the oblong part (25d). The second supporting part (25b) has a cutting part (25f), on which the flat end (23c) of the second connecting rod part (23) is mounted in sliding.
Description
Technical field
The present invention relates at information processing apparatus, measure in machine, the medical machine etc., particularly under the situation that does not reduce operability, realized the key switch arrangement of slimming as the key switch arrangement of the employed keyboard of input unit.
Background technology
In the past,, need guarantee its so-called operability for employed keyboard in the portable personal computer etc., which part of the cap that promptly no matter pushes button, button cap does not all have obliquely and descends.Therefore, in key switch arrangement in the past, possesses linkage in the bottom of button cap.Possess the key switch arrangement of linkage as bottom, a kind of structure that is disclosed in the TOHKEMY 2001-229764 communique is for example arranged at button cap.
Figure 13 represents is in the past the disclosed key switch arrangement that possesses linkage of above-mentioned document.In Figure 13, key switch 10 in the past comprises: button cap 11, be configured to the 1st linkage component 12 that button cap relatively 11 slides, be configured to the 2nd linkage component 13, bending when button cap 11 is pressed that button cap 11 relatively slides, make when exerting oneself to be disengaged button cap 11 revert to the origin-location loudspeaker drum (elastomeric element) 14, keep the frame 15 of the 1st, the 2nd linkage component 12,13, the base plate 17 that under loudspeaker drum 14, has the diaphragm 16 of contact portion and have the hole that the molten weldering pin 15a of frame 15 is fixed.The 1st linkage component 12 and the 2nd linkage component 13 constitute linkage.
In above key switch arrangement, even under the situation about being pressed in the end of button cap 11, by the linkage that constitutes by the 1st, the 2nd linkage component 12,13, Yi Bian button cap 11 is kept level, Yi Bian descend.For example, under the situation that the position of the button cap 11 in Figure 13 shown in the arrow is pressed, at first the right part of the 2nd linkage component 13 descends.Move to the left the left part of the 2nd linkage component 13.Thus, the central portion of the 2nd linkage component 13 descends, and the 1st linkage component 12 that is connected with the 2nd linkage component 13 at central portion also descends.The decline of the 1st linkage component 12 also descends the left part of button cap 11.Like this, even the end of the cap 11 that pushes button, button cap 11 also keeps level to descend, and thus, has guaranteed can not feel because of difference depressed position the so-called operability of operation sense difference.
Patent documentation 1: TOHKEMY 2001-229764 communique
But, in above-mentioned key switch arrangement in the past, constituted button cap the 11, the 1st, the 2nd linkage component 12,13 and the overlapping structure of frame 15 stratiforms, and, frame 15 constitutes the complicated structure that need have thickness to a certain degree, portable information terminal) and the problem of using in the small sized personal computer therefore, it has limited slimming, exists to require the PDA of Portability (personal digital assistant:.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind ofly under the situation that does not influence the so-called operability that can not feel operation sense difference because of the difference depressed position of button cap, realized the key switch arrangement of slimming.
In order to solve the above problems, the invention provides a kind of key switch arrangement, possess: button cap, the diaphragm that possesses contact portion, and be provided in linkage between above-mentioned button cap and the above-mentioned diaphragm, this linkage comprises the 1st linkage component and the 2nd linkage component, and can support above-mentioned button cap up and downly, it is characterized in that, top at above-mentioned diaphragm is equipped with sheet component, and on above-mentioned sheet component, be provided with the 1st support and the 2nd support, the 1st support is by overlapping the flat end of forming of above-mentioned the 1st linkage component fixing, support above-mentioned the 1st linkage component, the 2nd support the flat overhang bracket of forming of above-mentioned the 2nd linkage component for can on the face of above-mentioned sheet component, sliding.
According to the present invention, owing on above-mentioned sheet component, be provided with the 1st support and the 2nd support, the 1st support is by overlapping the flat end of forming of above-mentioned the 1st linkage component fixing, support above-mentioned the 1st linkage component, the 2nd support the flat overhang bracket of forming of above-mentioned the 2nd linkage component for can on the face of above-mentioned sheet component, sliding, so do not damage operability, can realize the slimming of key switch arrangement.
Description of drawings
Fig. 1 is the exploded perspective view of key switch arrangement of the embodiment 1 of expression execution mode.
Fig. 2 is the cutaway view of key switch arrangement of the embodiment 1 of expression execution mode.
Fig. 3 is the stereogram of expression the 1st support.
Fig. 4 is the stereogram of expression the 2nd support.
Fig. 5 is the cutaway view that the state of the button cap among the embodiment 1 is supressed in expression.
Fig. 6 is the stereogram of the 1st linkage component of expression embodiment 2.
Fig. 7 is the stereogram of the resin sheet of expression embodiment 2.
Fig. 8 is the stereogram of the 1st support of expression embodiment 2.
Fig. 9 is the stereogram of the 1st linkage component of expression embodiment 3.
Figure 10 is the stereogram of the resin sheet of expression embodiment 3.
Figure 11 is the stereogram of the 1st support of expression embodiment 3.
Figure 12 is the stereogram that expression cuts out the variation of portion.
Figure 13 is a cutaway view of representing key switch arrangement in the past.
Reference numeral: 20-key switch; The 21-button cap; 22,31,41-the 1st linkage component; 23-the 2nd linkage component; 25,32,42-resin sheet; 25a-the 1st support; 25b-the 2nd support; 25d, 32d, 42d-rectangular member.
Embodiment
Below, will describe embodiments of the present invention in conjunction with the accompanying drawings.To the identical symbol of key element mark identical in each accompanying drawing.Fig. 1 is the exploded perspective view of key switch arrangement of the embodiment 1 of expression present embodiment, and Fig. 2 is the cutaway view of key switch arrangement of the embodiment 1 of expression present embodiment.
Embodiment 1:
In Fig. 1, Fig. 2, the key switch 20 of embodiment 1 comprises: button cap 21; Be configured to the 1st linkage component 22 of button cap 21 slips relatively; Be configured to the 2nd linkage component 23 that can rotate relative to button cap 21; Bending when button cap 21 is pressed makes when exerting oneself to be disengaged button cap 21 revert to loudspeaker drum (elastomeric element) 24 of origin-location; The resin sheet 25 that keeps the 1st, the 2nd linkage component 22,23; Under loudspeaker drum 24, have contact portion, and be provided in the diaphragm 26 of the bottom of resin sheet 25; And the base plate 27 that is provided in the bottom of diaphragm 26.
The inside at button cap 21 is provided with: insert the support 21a in the hole 22b on the end 22a who is formed on the 1st linkage component 22; And the support 21b of an end 23a of rotatably mounted the 2nd linkage component 23.As shown in Figure 2, support 21b comprises: rotatably insert the lock part 21ba among the hole 23b on the end 23a who is formed on the 2nd linkage component 23; And the anti-delinking part 21bb that breaks away from from lock part 21ba of an end 23a who is used to prevent the 2nd linkage component 23.
For the 1st linkage component 22, its integral body is made of flat-shaped part, and integral body forms roughly U font.The other end 22c of the 1st linkage component 22 is the part that is fixed on the resin sheet 25 as described later, and this part also forms tabular.By the 1st linkage component 22 is formed tabular, help the slimming of key switch arrangement.Central portion at the 1st linkage component 22 is formed with stage portion 22d, is formed with notch 22e in the outside of this stage portion 22d.The setting of notch 22e is to be used for and being connected of the 2nd linkage component 23.
The 2nd linkage component 23 and the 1st linkage component 22 similarly whole are made of flat-shaped part, and integral body forms roughly U font.The other end 23c of the 2nd linkage component 23, described as described later is chimeric with resin sheet 25 slidably part, this part also forms tabular.Also, help the slimming of key switch arrangement by the 2nd linkage component 23 is formed tabular.Central portion at the 2nd linkage component 23 forms stage portion 23d, forms notch 23e in the inboard of stage portion 23d.Notch 23e meshes by the notch 22e with the 1st linkage component 22, is configured the connection that can rotate mutually.
Loudspeaker drum 24 is that material forms roughly cup shape with rubber etc., at the inner surface central portion, forms contact highlightedly towards the below by bottom 24a (as shown in Figure 2).The 26g of contact portion of diaphragm 26 is pressed in bending when being pressed above loudspeaker drum 24, contact by bottom 24a.Loudspeaker drum 24 is arranged on the inboard of the 1st and the 2nd linkage component 22,23.
Fig. 3 represents the fixing state in the other end of the 1st linkage component 22.Among Fig. 3, become notch 25e at the triangle of rectangular member 25d, rectangular member 25d can be to thickness of slab direction warpage.The other end 22c of rectangular member 25d and the 1st linkage component 22 shown in Fig. 3 (a), is utilized adhesive 28 and overlaps the to each other bonding.After bonding, the other end 22c of the 1st linkage component 22, shown in Fig. 3 (b), can be to the direction of arrow, be the thickness of slab direction warpage of resin sheet 25.
The 2nd support 25b of resin sheet 25 as shown in Figure 4, is formed with the 25f of the portion of having cut (bridge portion).Between the upper surface of having cut 25f of portion and resin sheet 25, shown in Fig. 4 (b), form spatial portion 25g, in this spatial portion 25g, be inserted with the other end 23c of the 2nd linkage component 23.Under the state that inserts, the other end 23c can be along the upper surface slide of resin sheet 25.In addition, contact hole 25c shown in Figure 1 is positioned at the top of the contact portion of diaphragm 26, and forms loudspeaker drum 24 enterable sizes.
As shown in Figure 2, diaphragm 26 comprises: 2 flexible sheets 26a, 26b and be sandwiched in filler piece 26c in the middle of these 2 flexible sheets 26a, 26b, and in this filler piece 26c, corresponding a plurality of buttons and be provided with a plurality of through hole 26f.Through hole 26f forms the space between 2 flexible sheets 26a, 26b, and so that in this space, form the mode of mutual subtend configuration, fixed contact 26d is set on the flexible sheets 26b of base plate 27 sides, travelling contact 26e is set on the flexible sheets 26a of loudspeaker drum 24 sides.Constitute the 26g of contact portion by fixed contact 26d and travelling contact 26e.In addition, base plate 27 is configured in the bottom, to carry each above-mentioned parts.
Below, will describe action.Fig. 2 represents the state that button cap 21 is not pressed.Under this state, between diaphragm 26 and button cap 21, be equipped with resin sheet the 25, the 1st, the 2nd linkage component 22,23 and loudspeaker drum 24, the key element that determines this spatial altitude is the thickness and the 1st of resin sheet 25, the height of the 2nd linkage component 22,23.Because resin sheet 25 is formed by thin resin, and the 1st, the 2nd linkage component 22,23 forms by flat-shaped part, so can reduce the height between diaphragm 26 and the button cap 21, can make key switch 20 slimmings.
Along with the rotation of the 2nd linkage component 23, at the 1st linkage component 22 that central portion is connected with the 2nd linkage component 23, be the center with central portion as connecting portion, the counter clockwise direction rotation in Fig. 2, an end 22a descends.Here, the other end 22c of the 1st linkage component 22, owing to be fixed on the rectangular member 25d with flexible sheets resin sheet 25, so the 1st linkage component 22 rotates smoothly.By the decline of an end 22a, also drawn with the opposition side (left side shown in the figure, opposition side depressed position) of the chimeric button cap 21 of an end 22a of the 1st linkage component 22 and descend by stretching of the 1st linkage component 22.Like this, though the end of the cap 21 that pushes button, on one side button cap 21 also can be kept level, Yi Bian descend.
Along with the decline of button cap 21,24 bendings of loudspeaker drum, the contact of loudspeaker drum 24 as shown in Figure 5, is pressed the 26g of contact portion of pressuring film plate 26 by bottom 24a.Thus, travelling contact 26e contacts with fixed contact 26d and becomes switch closed condition.In addition, Fig. 5 is the cutaway view of the state that is pressed of expression button cap.
As mentioned above, according to embodiment 1, utilize formed the 1st linkage component 22 of flat-shaped part and the 2nd linkage component 23 to constitute linkage, the 1st linkage component 22 is fixed in the rectangular member 25d that is formed on the resin sheet 25, and the 2nd linkage component 23 is utilized the 2nd support 25b supporting of resin sheet 25, so a kind of slimming that can realize key switch 20 can be provided, the good key switch of operability that level descends also can be kept in the end of button cap 21 even be pressed, button cap 21.
Embodiment 2:
Below, embodiment 2 will be described.Fig. 6 is the stereogram of the 1st linkage component of expression embodiment 2.Among Fig. 6, the 1st linkage component 31 of embodiment 2 whole is made of flat-shaped part similarly to Example 1, and integral body forms roughly U font.On an end 31a of the 1st linkage component 31, be formed with the hole 31b that the support 21a that is formed on the button cap 21 is inserted, the other end 31c of the 1st linkage component 31 is the parts that are fixed on the resin sheet 32, this part also forms tabular.By the 1st linkage component 31 is formed tabular, help the slimming of key switch arrangement.
On the other end 31c of the 1st linkage component 31, form porose 31f.In the 31f of hole, embed the 32e of the portion of having cut that resin sheet 32 described later is arranged.Central portion at the 1st linkage component 31 is formed with stage portion 31d, is formed with notch 31e in the outside of this stage portion 31d.The setting of notch 31e is to be used for and being connected of the 2nd linkage component 23.
Fig. 7 is the stereogram of the resin sheet of expression embodiment 2.In Fig. 7, resin sheet 32 is arranged on diaphragm 26 integral upper, according to each key switch, is provided with the 1st support 32a, the 2nd support 32b and contact hole 32c.The 1st support 32a is provided with 2 rectangular member that form by the part that cuts out resin sheet 32 (cutting out portion) 32d, is formed with to the outstanding 32e of the portion of having cut of vertical direction at the leading section of rectangular member 32d.2 the other end 31c of corresponding the 1st linkage component 31 of rectangular member 32d are provided with, and fixing the other end 31c respectively.
Fig. 8 is the stereogram of the 1st support of expression embodiment 2.Among Fig. 8, the triangle of rectangular member 32d becomes notch 32f, and rectangular member 32d can be to thickness of slab direction warpage.The other end 31c of rectangular member 32d and the 1st linkage component 31 is as shown in Figure 8 by being fixed among the hole 31f that has cut the 32e of portion embedding the other end 31c.That is, after embedding, shown in Fig. 8 (b), like that, cut the leading section of the 32e of portion and fixed by complications.After fixing, the other end 31c of the 1st linkage component 31 can be to the direction of arrow, be the thickness of slab direction warpage of resin sheet 32.Other structure is identical with embodiment 1.
The action of the key switch of embodiment 2 is identical with the foregoing description 1.Embodiment 2 also can provide the slimming that can realize key switch 20, even and the end of the button cap 21 that is pressed, button cap 21 also can be kept the good key switch of operability that level descends.
Embodiment 3:
Below, embodiment 3 will be described.Fig. 9 is the stereogram of the 1st linkage component of expression embodiment 3.Among Fig. 9, the 1st linkage component 41 of embodiment 3 whole is made of flat-shaped part similarly to Example 1, and integral body forms roughly U font.On an end 41a of the 1st linkage component 41, be formed with the hole 41b that the support 21a that is formed on the button cap 21 is inserted, the other end 41c of the 1st linkage component 41 is the parts that are fixed on the resin sheet 42, this part also forms tabular.By the 1st linkage component 41 is formed tabular, help the slimming of key switch arrangement.
On the other end 41c of the 1st linkage component 41, be formed with circular hole 41f.In circular hole 41f, embed the 42e of the portion of going out of resin sheet 42 described later.Central portion at the 1st linkage component 41 forms stage portion 41d, is formed with notch 41e in the outside of this stage portion 41d.The setting of notch 41e is to be used for and being connected of the 2nd linkage component 23.
Figure 10 is the stereogram of the resin sheet of expression embodiment 3.In Figure 10, resin sheet 42 is arranged on diaphragm 26 integral upper, according to each key switch, is provided with the 1st support 42a, the 2nd support 42b and contact hole 42c.The 1st support 42a is provided with 2 rectangular member that form by the part that cuts out resin sheet 42 (cutting out portion) 42d, is formed with on the top of rectangular member 42d and goes out the 42e of portion.2 the other end 41c of corresponding the 1st linkage component 41 of rectangular member 42d and being provided with, and the other end 41c is fixed respectively.
Figure 11 is the stereogram of the 1st support of expression embodiment 3.In Figure 11, the triangle of rectangular member 42d becomes notch 42f, and rectangular member 42d can be to thickness of slab direction warpage.The other end 41c of rectangular member 42d and the 1st linkage component 41 is shown in Figure 11 (a), by being fixed going out among the circular hole 41f that the 42e of portion embeds the other end 41c.That is, after embedding, like that, the leading section of going out the 42e of portion is by towards flat and form fixing shown in Figure 11 (b).After fixing, the other end 41c of the 1st linkage component 41 can be to the direction of arrow, be the thickness of slab direction warpage of resin sheet 42.Other structure is identical with embodiment 1.
The action of the key switch of embodiment 3 is identical with the foregoing description 1.Embodiment 3 also can provide the slimming that can realize key switch 20, even and the end of the button cap 21 that is pressed, button cap 21 also can be kept the good key switch of operability that level descends.
The invention is not restricted to above-mentioned each embodiment, can carry out various distortion.For example, as the resin sheet that in above-mentioned each embodiment, illustrates, also can use and have elastomeric material, with the arbitrarily angled rectangular member of having cut, and it is possessed being fixed on the power that the 1st connecting rod on the rectangular member lifts, even button cap reverts to the power of original position from the state that is pressed.And, also can replace resin sheet and use the rubber-like metal.
In addition, in above-mentioned each embodiment,, enumerated the rectangular member of lengthwise, but the shape that cuts out portion is not limited thereto certainly as the shape of the rectangular member of the portion of cutting out.For example, also can be such shown in Figure 12 (a), be the oblong-shaped of growing crosswise, in addition, and even the situation of lengthwise also can form the R shape to the bight shown in Figure 12 (b) like that, and such shown in Figure 12 (c), form the shape of having excised the bight.In addition, Figure 12 is the stereogram that expression cuts out the variation of portion.
Claims (9)
1. key switch arrangement, possess: button cap, possess the diaphragm of contact portion and be provided in above-mentioned button cap and above-mentioned diaphragm between linkage, this linkage comprises the 1st linkage component and the 2nd linkage component, and can support above-mentioned button cap up and downly, it is characterized in that
Top at above-mentioned diaphragm is equipped with sheet component, and
On above-mentioned sheet component, be provided with the 1st support and the 2nd support, the 1st support is by overlapping the flat end of forming of above-mentioned the 1st linkage component fixing, support above-mentioned the 1st linkage component, the 2nd support the flat overhang bracket of forming of above-mentioned the 2nd linkage component for can on the face of above-mentioned sheet component, sliding.
2. key switch arrangement according to claim 1 is characterized in that, above-mentioned the 1st support is the portion that cuts out that the part of above-mentioned sheet component is cut out, and this is fixed in an above-mentioned end of above-mentioned the 1st linkage component cuts out portion.
3. key switch arrangement according to claim 2 is characterized in that, fixes by a bonding above-mentioned end and the above-mentioned portion of cutting out above-mentioned the 1st linkage component.
4. key switch arrangement according to claim 2, it is characterized in that, form the portion of having cut in the portion above-mentioned cutting out, and this portion of having cut inserted in the hole portion on the above-mentioned end that is formed on above-mentioned the 1st linkage component, thus an above-mentioned end and the above-mentioned portion of cutting out of above-mentioned the 1st linkage component are fixed.
5. key switch arrangement according to claim 2, it is characterized in that, form protuberance in the portion above-mentioned cutting out, and this protuberance inserted in the hole portion on the above-mentioned end that is formed on above-mentioned the 1st linkage component, make above-mentioned protuberance distortion again, thus an above-mentioned end and the above-mentioned portion of cutting out of above-mentioned the 1st linkage component are fixed.
6. key switch arrangement according to claim 1 and 2 is characterized in that, above-mentioned the 2nd support is the bridge portion with the slotting opening that leads in an end that can make above-mentioned the 2nd linkage component.
7. key switch arrangement according to claim 6 is characterized in that, above-mentioned bridge portion and above-mentioned sheet component are integrally formed.
8. key switch arrangement according to claim 1, it is characterized in that, above-mentioned sheet component is formed by the high resiliency parts, and above-mentioned the 1st support is the portion of having cut of having cut the part of above-mentioned sheet component with arbitrarily angled, this is fixed in an above-mentioned end of above-mentioned the 1st linkage component has cut portion.
9. key switch arrangement according to claim 1 is characterized in that above-mentioned sheet component is made of the rubber-like metal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007072724A JP5130759B2 (en) | 2007-03-20 | 2007-03-20 | Key switch structure |
| JP2007-072724 | 2007-03-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101271791A true CN101271791A (en) | 2008-09-24 |
| CN101271791B CN101271791B (en) | 2011-11-09 |
Family
ID=39907571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100093994A Expired - Fee Related CN101271791B (en) | 2007-03-20 | 2008-03-03 | Key switch construction |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5130759B2 (en) |
| CN (1) | CN101271791B (en) |
| TW (1) | TW200845069A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015109489A1 (en) * | 2014-01-23 | 2015-07-30 | 刘骏涛 | Ultraviolet ray detector |
| WO2018059600A1 (en) * | 2016-09-30 | 2018-04-05 | 陈�峰 | Key switch device for improving key drawing force |
| TWI640025B (en) * | 2016-09-28 | 2018-11-01 | 富士通電子零件有限公司 | Key switch and keyboard |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091712B (en) * | 2014-06-27 | 2016-03-02 | 苏州达方电子有限公司 | Press-key structure |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190320Y (en) * | 1994-04-13 | 1995-02-22 | 陈宝金 | Bridge type computer botton switch |
| JP3280340B2 (en) * | 1999-03-26 | 2002-05-13 | ブラザー工業株式会社 | Key switch mounting structure and method of manufacturing the same |
| CN1157649C (en) * | 1999-05-31 | 2004-07-14 | 明基电通股份有限公司 | Computer keyboard with accurately positioned rubber column |
| JP2002216577A (en) * | 2001-01-15 | 2002-08-02 | Alps Electric Co Ltd | Keyboard |
| JP2003045271A (en) * | 2001-07-26 | 2003-02-14 | Ekoerugu Kenkyusho:Kk | Push-button switch |
| JP2004235132A (en) * | 2002-12-03 | 2004-08-19 | Alps Electric Co Ltd | Keyboard |
| JP2006277111A (en) * | 2005-03-28 | 2006-10-12 | Fujitsu Component Ltd | Keyboard device |
| CN2788328Y (en) * | 2005-05-16 | 2006-06-14 | 卢双安 | Keystroke structure |
-
2007
- 2007-03-20 JP JP2007072724A patent/JP5130759B2/en not_active Expired - Fee Related
-
2008
- 2008-03-03 TW TW97107315A patent/TW200845069A/en unknown
- 2008-03-03 CN CN2008100093994A patent/CN101271791B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015109489A1 (en) * | 2014-01-23 | 2015-07-30 | 刘骏涛 | Ultraviolet ray detector |
| TWI640025B (en) * | 2016-09-28 | 2018-11-01 | 富士通電子零件有限公司 | Key switch and keyboard |
| WO2018059600A1 (en) * | 2016-09-30 | 2018-04-05 | 陈�峰 | Key switch device for improving key drawing force |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5130759B2 (en) | 2013-01-30 |
| CN101271791B (en) | 2011-11-09 |
| TW200845069A (en) | 2008-11-16 |
| JP2008235000A (en) | 2008-10-02 |
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Granted publication date: 20111109 Termination date: 20150303 |
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