CN1328647C - Folding keyboard - Google Patents
Folding keyboard Download PDFInfo
- Publication number
- CN1328647C CN1328647C CNB2004100350637A CN200410035063A CN1328647C CN 1328647 C CN1328647 C CN 1328647C CN B2004100350637 A CNB2004100350637 A CN B2004100350637A CN 200410035063 A CN200410035063 A CN 200410035063A CN 1328647 C CN1328647 C CN 1328647C
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- button portion
- foldable keyboard
- button
- side plate
- rotating shaft
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- Expired - Fee Related
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Abstract
The present invention relates to a foldable keyboard which comprises a first key part, a second key part and a third key part, wherein the second key part is connected with the first key part in a rotary mode, and the third key part is connected with the second key part in a rotary mode. When the foldable keyboard is in a first containing state, the first key part is positioned between the second key part and the third key part; when the foldable keyboard is in a first operating state, the first key part, the second key part and the third key part are roughly on the same plane.
Description
Technical field
The present invention relates to a kind of Foldable keyboard, particularly relate to and a kind ofly can save the space significantly, and be convenient to user's collection and the Foldable keyboard that carries.
Background technology
Fig. 1 is the synoptic diagram of an existing Foldable keyboard, and as shown in Figure 1, general common Foldable keyboard 10 is a two-part, mainly comprises right button portion of a left button portion 12, one 14, a rotating shaft 16 and a bracing frame 18.Wherein left button portion 12 and right button portion 14 articulate by rotating shaft 16, and when needs were collected, the user was the center with rotating shaft 16, and with left button portion 12 and the 14 relative doublings of right button portion, to reach the purpose of folding storage.
Existing bracing frame 18 is connected in left button portion 12 (also can connect right button portion 14), supporting a portable electron device, as: PDA.Yet, because general two-part keyboard only can reduce the area of half after folding, and bracing frame 18 is not easy to be arranged at the centre after keyboard launches, and bracing frame 18 must be moved to keyboard middle position 18 ' during use with convenient visual operation, therefore the user still is inconvenient to use.
See also Fig. 2 again, this figure is the synoptic diagram of another existing Foldable keyboard.Existing four-folding keyboard 20 mainly comprises one first to fourth section 22a～22d of portion, and can be folding according to mode shown in Figure 2.Yet,, make button 24 be vulnerable to collision and cause damage because the thickness of traditional four-folding keyboard after folding is thicker, and can cause part button 24 outstanding after folding between second section 22b of portion and the 3rd section 22c of portion.Secondly, the space bar of tradition four folding keyboards need be divided into the 22b of second and third section portion, 22c, and its operation sense is relatively poor, a therefore real non-ideal designs.
Summary of the invention
The object of the present invention is to provide a kind of Foldable keyboard, it has thin fold thicknesses, makes things convenient for the user to carry and collects, to improve the shortcoming of existing Foldable keyboard.
Foldable keyboard of the present invention is one or three folding keyboards, and it comprises first, second and third button portion.The second button portion connects the first button portion in rotating mode, and the 3rd button portion also connects this second button portion in rotating mode; Wherein the first button portion is short than the 3rd button portion, and this first button portion is positioned at the left side of this second button portion, and when Foldable keyboard was in a receiving state, the first button portion was positioned between the second button portion and the 3rd button portion; When Foldable keyboard was in a mode of operation, the first button portion, the second button portion and the 3rd button portion were positioned at same plane haply.
In preferred embodiment of the present invention, the first button portion is positioned at second button portion left side.And when Foldable keyboard is in receiving state, be positioned at each first button in the first button portion towards second button that is positioned in the second button portion, and one first trip of the first button portion engages with one first buckling parts of the second button portion, to fix this first button portion.
The first button portion has one first projection and one first recess, and the second button portion has one second projection and one second recess; When Foldable keyboard was in mode of operation, first projection matched with second recess, and second projection matches with first recess, to prevent first and second mutual changing of the relative positions of button portion.
Foldable keyboard of the present invention also comprises a connection piece, articulates the first button portion and the second button portion; Wherein web member has separately one first rotating shaft and one second rotating shaft, and the first button portion is articulated in first rotating shaft, and the second button portion is articulated in second rotating shaft.In addition, web member has one second trip, and the 3rd button portion has one second buckling parts, and when Foldable keyboard was in receiving state, second trip engaged with second buckling parts, to fix the 3rd button portion.
In preferred embodiment of the present invention, Foldable keyboard also comprises a connecting rod, first and second side plate; Wherein connecting rod articulates with the second button portion and the 3rd button portion respectively, and first side plate and the second button portion articulate, and second side plate articulates with the 3rd button portion and first side plate respectively again.
In above-mentioned connecting structure, the second button portion has one the 3rd rotating shaft and one the 4th rotating shaft, and the 3rd button portion has one the 5th rotating shaft and one the 6th rotating shaft; Wherein, one end of connecting rod is articulated in the 3rd rotating shaft, and the other end is articulated in the 5th rotating shaft, and first side plate is articulated in the 4th rotating shaft, and second side plate is articulated in first side plate and the 6th rotating shaft, so second, third button portion, connecting rod, first and second side plate constitute First Five-Year Plan connecting rod interlinked mechanism.
Again, in this embodiment, when Foldable keyboard is in mode of operation, the 3rd rotating shaft and the 4th rotating shaft are positioned on the different level, the 5th rotating shaft and the 6th rotating shaft are positioned on the different level, and first side plate and second side plate roughly are parallel to each other, and second side plate is coated between the 3rd button portion and first side plate.When Foldable keyboard was in receiving state, first side plate and second side plate were roughly vertical mutually.
In a preferred embodiment, the first button portion of Foldable keyboard has the first irregular edge, the second button portion has the second irregular edge, and first edge and second edge are rearranged with staggered complimentary fashion by first button and second button respectively.Again, the second button portion has the 3rd an irregular edge, and the 3rd button portion has irregular the 4th edge, and the 3rd edge and the 4th edge are rearranged in staggered complementary mode by second button and the 3rd button respectively.
The invention provides another Foldable keyboard, it comprises first, second and third button portion.The second button portion connects the first button portion in rotating mode, and the 3rd button portion also connects this second button portion in rotating mode; Wherein the first button portion is short than the 3rd button portion, and this first button portion is positioned at the left side of this second button portion, when Foldable keyboard is in a receiving state, the first button portion is positioned between the second button portion and the 3rd button portion, and is positioned at each first button in the first button portion towards second button that is positioned in the second button portion.
The present invention also discloses a kind of Foldable keyboard, comprising: one second button portion; One the 3rd button portion connects this second button portion in rotating mode; One connecting rod articulates with this second button portion and the 3rd button portion respectively; One first side plate articulates with this second button portion; And one second side plate, articulate with the 3rd button portion and this first side plate respectively; Wherein when this Foldable keyboard is in mode of operation, this first side plate and this second side plate are parallel to each other, and this second side plate is coated between the 3rd button portion and this first side plate, and when this Foldable keyboard was in receiving state, this first side plate and this second side plate were vertical mutually.
Syllogic Foldable keyboard of the present invention, its folding mode is simple than conventional keyboard, and the thickness after folding is thinner than four-folding Foldable keyboard, and shorter than eighty percent discount formula keyboard, makes things convenient for the user to carry and collects; And keyboard two side direction central authorities are folding, can be effectively dustproof, and avoid making button impaired because of collision.
Secondly, the space bar of syllogic Foldable keyboard of the present invention is positioned at the keyboard second button portion, and the first button portion is shorter than the 3rd button portion, so the position of space bar more meets ergonomics than existing design.
Description of drawings
Fig. 1 is the synoptic diagram of an existing Foldable keyboard;
Fig. 2 is the synoptic diagram of another existing Foldable keyboard;
Fig. 3 is the exploded view of Foldable keyboard of the present invention;
Fig. 4 A is the vertical view of Foldable keyboard of the present invention when mode of operation;
Fig. 4 B is the side view of Foldable keyboard of the present invention when mode of operation;
Fig. 4 C is the cut-open view of a-a ' section among Fig. 4 A;
Fig. 5 A is the stereographic map of Foldable keyboard of the present invention when folding;
Fig. 5 B is the vertical view of first and second housing among Fig. 4;
Fig. 5 C is the cut-open view of magnification region b among Fig. 5 A;
Fig. 6 A is Foldable keyboard of the present invention another stereographic map when folding;
Fig. 6 B is the cut-open view of magnification region c among Fig. 6 A;
Fig. 7 is the stereographic map of Foldable keyboard of the present invention when receiving state.
Embodiment
Fig. 3 is the exploded view of Foldable keyboard of the present invention, and Fig. 4 A is the vertical view of Foldable keyboard when mode of operation, and shown in Fig. 3 and Fig. 4 A, Foldable keyboard 100 of the present invention comprises the first button portion 30, the second button portion 40 and the 3rd button portion 50; Wherein, the first button portion 30 is connected in the second button portion, 40 left sides in rotating mode, and the 3rd button portion 50 is connected in this second button portion, 40 right sides in rotating mode, forms a three-bend Foldable keyboard.
The first button portion 30 of Foldable keyboard 100 comprises first housing 32 and a plurality of setting first button 34 thereon, the second button portion 40 comprises that second button, 42, the three button portions 50 that second housing 41 and plural number are provided with thereon comprise the 3rd housing 52 and a plurality of setting the 3rd button 54 thereon; Wherein, first button 34 in keyboard 100 left sides and second button 42 are arranged with staggered complimentary fashion, form the first irregular edge E1 and the second edge E2 respectively, and second button 42 on keyboard 100 right sides and the 3rd button 54 are also arranged with staggered complimentary fashion, form the 3rd irregular edge E3 and the 4th edge E4 respectively.Therefore, when Foldable keyboard 100 was in mode of operation as Fig. 4 A, the key arrangement formula of Foldable keyboard 100 was identical with the known keyboard arrangement mode of common people.
As shown in Figure 3, Foldable keyboard 100 comprises a connection piece 60, one first side plate 70, one second side plate 80 and two connecting rods 90 in addition.Below just the assembling mode of Foldable keyboard 100 of the present invention be described below respectively:
The second button portion 40 has the 3rd rotating shaft 48 and the 4th rotating shaft 49, the 3rd button portion 50 has the 5th rotating shaft 57 and the 6th rotating shaft 58, the through hole 92 of wherein above-mentioned connecting rod 90 1 ends is articulated in the 3rd rotating shaft 48 of the second button portion 40, the through hole 94 of the other end is articulated in the 5th rotating shaft 57 of the 3rd button portion 50, first side plate 70 is articulated in the 4th rotating shaft 49, the two ends of second side plate 80 then are articulated in the 6th rotating shaft 58 of first side plate 70 and the 3rd button portion 50 respectively, so second button portion 40, the 3rd button portion 50, connecting rod 90, first and second side plate 70,80 constitute First Five-Year Plan connecting rod interlinked mechanism, and the 3rd button portion 50 can be rotated with respect to the second button portion 40.
Fig. 4 B is the side view of Fig. 4 A, shown in Fig. 4 B, when Foldable keyboard 100 expansion, when being in operable state, the left and right sides of keyboard 100, web member 60 and first side plate 70 contact with desktop, form four strong points, make the first button portion 30, the second button portion 40 and the 3rd button portion 50 roughly be positioned at same surface level.
Please consult Fig. 4 C again, it is the cut-open view of a-a' section among Fig. 4 A.When Foldable keyboard 100 launched, the 3rd rotating shaft 48 and the 4th rotating shaft 49 of second housing 41 were positioned on the different level, and the 5th rotating shaft 57 and the 6th rotating shaft 58 of the 3rd housing 52 are positioned on the different level.Connecting rod 90 connects the 3rd rotating shaft 48 and the 5th rotating shaft 57 with horizontality, and first side plate 70 and second side plate 80 are parallel to each other, and second side plate 80 is coated between the 3rd button portion 50 and first side plate 70, is positioned at Foldable keyboard 100 bottoms.Secondly, second housing 41 in the 4th rotating shaft 49 places to the right the 3rd housing 52 protrude, form a flange, can make the 3rd button portion 50 can stablize the maintenance horizontality.
Fig. 5 A is the stereographic map of Foldable keyboard when folding, shown in Fig. 4 A and Fig. 5 A, because the right side of existing keyboard has than multifunction key, and keyboard " F " key, " J " position of key and space bar can be partial to the left side of keyboard, the arrangement of space bar need divide and is located on two keypad portion.Therefore, in this example.30 to the three button portions 50 of the first button portion that special arrangements Foldable keyboard 100 is positioned at the left side lack, and make " F " key includes in the second button portion 40.When folding, the first button portion 30 in keyboard 100 left sides is to the second button portion, 40 foldings of central authorities, second button 42 of first button 34 of this moment in the first button portion 30 in the second button portion 40, and one first buckling parts 43 of the second button portion 40 (4A figure) can fasten one first trip 36 of the first button portion 30, to fix this first button portion 30.
Refer again to Fig. 5 B, first housing 32 of the first button portion 30 is provided with the first adjacent projection 38 and first recess 39, second housing 41 of the second button portion 40 is provided with second projection 45 and second recess 46, and first projection 38 matches with second recess 46, second projection 45 matches with first recess 39, and projection 38 is interconnected with projection 45, when preventing that the first button portion 30 from rotating with respect to the second button portion 40, first and second button portion is because of the changing of the relative positions mutually, make the button that protrudes in the first button portion 30 " D " collide with second housing 41, cause button to damage, and make Foldable keyboard when mode of operation, the first button portion and the second button portion can roughly remain on sustained height, to improve stability of structure.
Secondly, Fig. 5 C is the cut-open view of magnification region b among Fig. 5 A, shown in Fig. 5 A and Fig. 5 C, because there is a suitable distance at the edge of the 5th rotating shaft 57 and the 3rd housing 52, therefore, when the 3rd button portion 50 rotates with respect to the second button portion 40, the 3rd housing 52 can be used as a rotating fulcrum with the edge that second housing 41 contacts, cooperate five connecting rod interlinked mechanisms of the present invention again, make the button 42 that protrudes in second and third button portion 40,50,54 in the process of lifting, can not collide, cause button to damage with the second or the 3rd housing 41,52.
Fig. 6 A is Foldable keyboard another stereographic map when folding, shown in Fig. 5 A and Fig. 6 A, after the first button portion 30 is folded in the second button portion 40 relatively, again the 3rd button portion 50 is folded to the first button portion, 30 dorsal parts, second buckling parts 56 (as Fig. 5 A) in the 3rd button portion 50 can fasten with one second trip 66 on the web member 60, to fix the 3rd button portion 50.At this moment, as shown in Figure 7, the first button portion 30 is folded between the second button portion 40 and the 3rd button portion 50, finishes folding action of taking in.
Refer again to Fig. 6 B; it is the cut-open view of magnification region c among Fig. 6 A; the length of connecting rod 90 is rough suitable with thickness Foldable keyboard 100; therefore, when Foldable keyboard 100 was in receiving state, first side plate 70 and second side plate 80 were vertical mutually; and coat the folding gap of keyboard fully; therefore, first side plate 70 and second side plate 80 more can avoid dust to enter the folding gap of keyboard except protecting button.
In addition, the position of first trip 36 of the present invention and first buckling parts 43 and second trip 66 and second buckling parts 56 can be exchanged mutually, also can reach the purpose of fixing the first button portion 30 and the 3rd button portion 50.
Syllogic Foldable keyboard of the present invention, its folding mode is simpler than conventional keyboard, and the thinner thickness after folding makes things convenient for the user to carry and collects; And keyboard two side direction central authorities are folding, can be effectively dustproof, and avoid making button impaired because of collision.
Secondly, shown in Fig. 4 A, 30 to the three button portions 50 of the first button portion of syllogic Foldable keyboard of the present invention are short, make " F " key, " J " key and space bar 47 all be positioned at the second button portion 40 of keyboard central authorities, and " F " key and " J " key roughly has a symmetry to concern with respect to the center of space bar 47.Therefore, when user's operation keyboard, the both hands thumb can symmetry be placed on the space bar 47, and left index finger can be posted by " F " on the key, right hand forefinger can be posted by " J " on the key.So syllogic Foldable keyboard of the present invention more meets the design of ergonomics than existing design, and does not need space bar was located in two button portions in 47 minutes.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to limiting the present invention, anyly is familiar with this operator, without departing from the spirit and scope of the present invention; some change and retouching of Ying Kezuo, so protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (22)
1. Foldable keyboard comprises:
One first button portion;
One second button portion connects this first button portion in rotating mode; And
One the 3rd button portion, connect this second button portion in rotating mode, wherein this first button portion is shorter than the 3rd button portion, and this first button portion is positioned at the left side of this second button portion, when this Foldable keyboard is in a receiving state, this first button portion is positioned between this second button portion and the 3rd button portion, and when this Foldable keyboard was in a mode of operation, this first button portion, this second button portion and the 3rd button portion were positioned at same plane haply.
2. Foldable keyboard as claimed in claim 1, wherein this first button portion has a plurality of first buttons, this second button portion has a plurality of second buttons, and the 3rd button portion have a plurality of the 3rd buttons, and when this Foldable keyboard was in this receiving state, respectively first button and the 3rd button were towards this each second button.
3. Foldable keyboard as claimed in claim 1, wherein this first button portion has one first trip, and this second button portion has one first buckling parts, when this Foldable keyboard is in this receiving state, this first trip engages with this first buckling parts, to fix this first button portion.
4. Foldable keyboard as claimed in claim 1, wherein this first button portion has one first projection and one first recess, this second button portion has one second projection and one second recess, when this Foldable keyboard is in this mode of operation, this first projection matches with this second recess, and this second projection matches with this first recess.
5. Foldable keyboard as claimed in claim 1, also comprise a connection piece, this web member connects this first button portion and this second button portion, wherein this web member has separately one first rotating shaft and one second rotating shaft, and this first button portion is articulated in this first rotating shaft, and this second button portion is articulated in this second rotating shaft.
6. Foldable keyboard as claimed in claim 5, wherein this web member has one second trip, and the 3rd button portion has one second buckling parts, when this Foldable keyboard is in this receiving state, this second trip engages with this second buckling parts, to fix the 3rd button portion.
7. Foldable keyboard as claimed in claim 1 also comprises:
One connecting rod articulates with this second button portion and the 3rd button portion respectively;
One first side plate articulates with this second button portion; And
One second side plate articulates with the 3rd button portion and this first side plate respectively;
When this Foldable keyboard launches, this connecting rod is horizontal, and first side plate and second side plate are parallel to each other, this second side plate is coated between the 3rd button portion and this first side plate, be positioned at the bottom of Foldable keyboard, when this Foldable keyboard was taken in, this connecting rod was vertical configuration, and this first side plate and this second side plate are vertical mutually, and coat the gap between this second button and the 3rd button.
8. Foldable keyboard as claimed in claim 7, wherein this second button portion has one the 3rd rotating shaft and one the 4th rotating shaft, and an end of this connecting rod is articulated in the 3rd rotating shaft, and this first side plate is articulated in the 4th rotating shaft.
9. Foldable keyboard as claimed in claim 8, wherein when this Foldable keyboard was in this mode of operation, the 3rd rotating shaft and the 4th rotating shaft were positioned on the different level.
10. Foldable keyboard as claimed in claim 8, wherein the 3rd button portion has one the 5th rotating shaft and one the 6th rotating shaft, and the other end of this connecting rod is articulated in the 5th rotating shaft, and this second side plate is articulated in the 6th rotating shaft.
11. Foldable keyboard as claimed in claim 10, wherein when this Foldable keyboard was in this mode of operation, the 5th rotating shaft and the 6th rotating shaft were positioned on the different level.
12. Foldable keyboard as claimed in claim 8, wherein when this Foldable keyboard was in this mode of operation, this first side plate and this second side plate were parallel to each other, and this second side plate is coated between the 3rd button portion and this first side plate.
13. Foldable keyboard as claimed in claim 8, wherein when this Foldable keyboard was in this receiving state, this first side plate and this second side plate were vertical mutually haply.
14. Foldable keyboard as claimed in claim 2, wherein this first button portion has one first irregular edge, this second button portion has one second irregular edge, and this first edge and this second edge are rearranged with staggered complimentary fashion by this each first button and these second buttons respectively.
15. Foldable keyboard as claimed in claim 2, wherein this second button portion has the 3rd an irregular edge, the 3rd button portion has irregular the 4th edge, and the 3rd edge and the 4th edge are respectively by this each second button and should rearrange in staggered complementary mode by each the 3rd button.
16. a Foldable keyboard comprises:
One first button portion;
One second button portion connects this first button portion in rotating mode; And
One the 3rd button portion, connect this second button portion in rotating mode, wherein this first button portion is short than the 3rd button portion, and this first button portion is positioned at the left side of this second button portion, when this Foldable keyboard was in a receiving state, this first button portion was positioned between this second button portion and the 3rd button portion.
17. Foldable keyboard as claimed in claim 16, wherein this first button portion has a plurality of first buttons, this second button portion has a plurality of second buttons, and the 3rd button portion have a plurality of the 3rd buttons, when this Foldable keyboard was in this receiving state, respectively first button was towards this each second button.
18. Foldable keyboard as claimed in claim 17, wherein this first button portion has one first irregular edge, this second button portion has one second irregular edge, and this first edge and this second edge are respectively by this each first button and should rearrange with staggered complimentary fashion by each second button.
19. Foldable keyboard as claimed in claim 17, wherein this second button portion has the 3rd an irregular edge, the 3rd button portion has irregular the 4th edge, and the 3rd edge and the 4th edge are respectively by this each second button and should rearrange in staggered complementary mode by each the 3rd button.
20. a Foldable keyboard comprises:
One second button portion;
One the 3rd button portion connects this second button portion in rotating mode;
One connecting rod articulates with this second button portion and the 3rd button portion respectively;
One first side plate articulates with this second button portion; And
One second side plate articulates with the 3rd button portion and this first side plate respectively;
Wherein when this Foldable keyboard is in mode of operation, this first side plate and this second side plate are parallel to each other, and this second side plate is coated between the 3rd button portion and this first side plate, and when this Foldable keyboard was in receiving state, this first side plate and this second side plate were vertical mutually.
21. Foldable keyboard as claimed in claim 20, wherein this second button portion has one the 3rd rotating shaft and one the 4th rotating shaft, and an end of this connecting rod is articulated in the 3rd rotating shaft, and this first side plate is articulated in the 4th rotating shaft.
22. Foldable keyboard as claimed in claim 21, wherein the 3rd button portion has one the 5th rotating shaft and one the 6th rotating shaft, and the other end of this connecting rod is articulated in the 5th rotating shaft, and this second side plate is articulated in the 6th rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100350637A CN1328647C (en) | 2004-04-23 | 2004-04-23 | Folding keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100350637A CN1328647C (en) | 2004-04-23 | 2004-04-23 | Folding keyboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1690929A CN1690929A (en) | 2005-11-02 |
| CN1328647C true CN1328647C (en) | 2007-07-25 |
Family
ID=35346402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100350637A Expired - Fee Related CN1328647C (en) | 2004-04-23 | 2004-04-23 | Folding keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1328647C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009149589A1 (en) * | 2008-10-14 | 2009-12-17 | Cai Guangxian | Three-dimensional keyboard |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102289289A (en) * | 2010-06-18 | 2011-12-21 | 深圳富泰宏精密工业有限公司 | Folding keyboard |
| US8794854B2 (en) * | 2010-11-17 | 2014-08-05 | Shenzhen Doking Electronic Technology Co., Ltd. | Foldable keyboard |
| CN104182054B (en) * | 2013-05-23 | 2017-04-19 | 英业达科技有限公司 | Folding type input device |
| CN104765464A (en) * | 2015-04-03 | 2015-07-08 | 金陵科技学院 | Novel fan type folding keyboard |
| CN107346181A (en) * | 2017-06-19 | 2017-11-14 | 柳州联海科技有限公司 | A kind of portable electronic gamepad |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10293624A (en) * | 1997-04-18 | 1998-11-04 | Hitachi Ltd | Portable electronic equipment |
| CN2403058Y (en) * | 1999-11-11 | 2000-10-25 | 周进文 | Folding keyboard unfolding and supporting device |
| CN1280374A (en) * | 1999-07-12 | 2001-01-17 | 权智技术开发有限公司 | Expandable keyboard |
| CN2446577Y (en) * | 2000-08-24 | 2001-09-05 | 达方电子股份有限公司 | Foldable keyboard |
| US6552281B2 (en) * | 2000-09-21 | 2003-04-22 | Hosiden Corporation | Folding keyboard |
| CN1475893A (en) * | 2002-08-16 | 2004-02-18 | ����˹�ص� | Portable keyboard |
| CN2708386Y (en) * | 2004-04-23 | 2005-07-06 | 达方电子股份有限公司 | Folding keyboard |
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2004
- 2004-04-23 CN CNB2004100350637A patent/CN1328647C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10293624A (en) * | 1997-04-18 | 1998-11-04 | Hitachi Ltd | Portable electronic equipment |
| CN1280374A (en) * | 1999-07-12 | 2001-01-17 | 权智技术开发有限公司 | Expandable keyboard |
| CN2403058Y (en) * | 1999-11-11 | 2000-10-25 | 周进文 | Folding keyboard unfolding and supporting device |
| CN2446577Y (en) * | 2000-08-24 | 2001-09-05 | 达方电子股份有限公司 | Foldable keyboard |
| US6552281B2 (en) * | 2000-09-21 | 2003-04-22 | Hosiden Corporation | Folding keyboard |
| CN1475893A (en) * | 2002-08-16 | 2004-02-18 | ����˹�ص� | Portable keyboard |
| CN2708386Y (en) * | 2004-04-23 | 2005-07-06 | 达方电子股份有限公司 | Folding keyboard |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009149589A1 (en) * | 2008-10-14 | 2009-12-17 | Cai Guangxian | Three-dimensional keyboard |
| CN102187300A (en) * | 2008-10-14 | 2011-09-14 | 蔡光贤 | Three-dimensional keyboard |
| CN102187300B (en) * | 2008-10-14 | 2014-07-02 | 蔡光贤 | Three-dimensional keyboard |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1690929A (en) | 2005-11-02 |
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