CN204117903U - A kind of keyboard - Google Patents
A kind of keyboard Download PDFInfo
- Publication number
- CN204117903U CN204117903U CN201420630363.9U CN201420630363U CN204117903U CN 204117903 U CN204117903 U CN 204117903U CN 201420630363 U CN201420630363 U CN 201420630363U CN 204117903 U CN204117903 U CN 204117903U
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- CN
- China
- Prior art keywords
- base
- keyboard
- framework
- optocoupler
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of keyboard, comprise base plate, by lower circuit board from being above successively set on base plate, base, scissor mechanism and keycap; It also comprises back-moving spring and optocoupler.Keyboard of the present utility model adopts the scissor mechanism of quadrilateral structure, the basic contact area of keycap and base is increased by the Bounding Box area of base, any one position that user touches keycap both can complete corresponding pressing action, improve the sensitivity of button reaction, extend the useful life of button and keyboard; Have employed optocoupler, optocoupler has that the noise that volume is little, non-contact-point effectively can avoid Mechanical Contact point disturbs, long service life, etc. advantage.
Description
Technical field
The utility model relates to the keyboard structure of electronic product, is specifically related to a kind of keyboard.
Background technology
Keyboard is the input equipment of computer or the electronic product with computer said function, can input character by keyboard, also can control the operation of computer.Along with electronic product fast development and extensively quote, keyboard, as the bridge of man-machine interaction, occupies important position in daily live and work.The structure comparison of super book keyboard product common are three kinds in the market, is thin film switch class keyboard, electric silica gel Switch keyboard, mechanical switch class keyboard respectively.In this three classes keyboard, the scope of application of thin film switch class keyboard is the most general.Thin film switch class keyboard is divided into volcanic structures, scissor leg structure and palace rod structure according to the structure of its button.Volcanic crater structural membrane keyboard is more common in the keyboard of PC and general POS; Scissor leg structure membrane switch keyboard is used in keyboard of notebook computer because of product thickness book, certainly also more universal in the keyboard of middle-end PC; Palace rod structure membrane switch keyboard structure is unique, but does not popularize at present because feel is undesirable.
Scissor leg structure also claims X structure full name to be called SCISSOR, its operation principle is: use two groups of parallel four-bar linkages, allow during four corner of user by touching dish in forced movement mode and can enjoy smooth and easy and consistent feel, the plastic-steel material of lightweight, firm in structure, durability is better than general keyboard.The design of scissor leg structure is most for notebook and ultra-thin PC computor-keyboard.It is the two groups of bar linkage structure bracing frames that have employed similar scissors shape between keycap and base, and key journey is generally about about 2.50mm ~ 3.0mm, and this design can allow the finger of user stressed on keycap equably, and each button all can obtain same feel.There is many defects in existing scissor button structure, button uses silica gel as elastic body on the one hand, and feel is poor; Book membrane switch is easy to be oxidized and causes the being quick on the draw property of button lower on the other hand, and correspondence repeatedly action is wanted in once-through operation, shortens the useful life of product; Moreover existing button is that Mechanical Contact easily produces noise.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of keyboard, improves action sensitivity, extends product useful life, side by side except the interference of switch noise.
For solving the problem, the technical scheme that the utility model adopts is as follows:
A kind of keyboard, comprises base plate, by lower circuit board from being above successively set on base plate, base, scissor mechanism and keycap; It also comprises back-moving spring and optocoupler;
Described optocoupler comprises transmitting terminal and receiving terminal;
Described base is provided with the containing cavity holding shear mechanism, in described containing cavity, is provided with the installation position of installing transmitting terminal and receiving terminal; The bottom of transmitting terminal and receiving terminal is fixing to be electrically connected with circuit board;
Described scissor mechanism comprises the first framework and second framework of quadrilateral structure; It is inner that described first framework is positioned at the second framework, the middle part inside the second framework is connected to by axis of rotation in the middle part of it, the position in four bights of the first framework and the second framework is provided with limited post, the position that base corresponds to limited post arranges the hole slot matched with limited post, and limited post can be installed in hole slot just; Described first framework arranges light barrier, and light barrier is between transmitting terminal and receiving terminal;
Be provided with reference column in the middle part of described base, the lower end of back-moving spring is socketed on base reference column, and upper end and the keycap of back-moving spring support.
The utility model can also be realized by following scheme.
As a kind of execution mode of the present utility model, described keyboard also comprises electric connecting sheet, electric connecting sheet is electrically connected with circuit board, the mounting groove being provided with electric connecting sheet is provided with at base bottom, mounting groove communicates with installation position, and transmitting terminal and the receiving terminal of described optocoupler are fixed on electric connecting sheet by installation position.
As a kind of execution mode of the present utility model, described electric connecting sheet comprises pair of pins, and described pin is electrically connected with circuit board.
In the utility model, circuit board is not defined as the circuit board of a certain structure, and can be any one circuit board that can be suitable for the keyboard of scissor leg structure, as a kind of execution mode of the present utility model, described circuit board be film circuit board or pcb board.
As a kind of execution mode of the present utility model, the transmitting terminal of described optocoupler and receiving terminal are fixed on circuit boards.
As a kind of execution mode of the present utility model, described keycap is fastened on base, scissor mechanism, back-moving spring and optocoupler is enclosed in containing cavity.
Compared to existing technology, the beneficial effects of the utility model are:
1. keyboard described in the utility model adopts the scissor mechanism of quadrilateral structure, the basic contact area of keycap and base is increased by base Bounding Box area, any one position that user touches keycap both can complete corresponding action, use back-moving spring to improve the sensitivity of button reaction as elastomer, extend the useful life of button and keyboard;
2. have employed optocoupler in keyboard described in the utility model, optocoupler has that volume is little, contactless effectively can avoid the advantages such as the noise of Mechanical Contact point disturbs, the life-span is long, switch motion reaction is fast;
3. keyboard press button structure described in the utility model is simple, comfortable feel.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is keyboard internal structure schematic diagram described in the utility model;
Fig. 2 is keyboard disassembled form figure described in the utility model;
Wherein, 1-base plate, 2-electric connecting sheet, 3-base, 31-containing cavity, 4-reference column, 5-scissor mechanism, 51-second framework, 52-first framework, 53-light barrier, 6-keycap, 7-back-moving spring, 8-optocoupler.
Embodiment
As shown in Figure 1 and Figure 2, keyboard described in the utility model, comprises base plate 1, by lower circuit board from being above successively set on base plate, base 3, scissor mechanism 5 and keycap 6; It also comprises back-moving spring 7 and optocoupler 8; Described optocoupler 8 comprises transmitting terminal and receiving terminal; Described base is provided with the containing cavity 31 holding scissor mechanism 7, in described containing cavity 31, is provided with the installing hole installing transmitting terminal and receiving terminal; The bottom of transmitting terminal and receiving terminal is fixing to be electrically connected with circuit board; Described scissor mechanism comprises the first framework 52 and the second framework 51 of quadrilateral structure; It is inner that described first framework 52 is positioned at the second framework 51, the middle part inside the second framework 51 is connected to by axis of rotation in the middle part of it, the position in four bights of the first framework 52 and the second framework 51 is provided with limited post, the position that base corresponds to limited post arranges the hole slot matched with limited post, and limited post can be installed in hole slot just; Described first framework arranges light barrier 53, and light barrier 53 is between transmitting terminal and receiving terminal; In the scissor mechanism of this quadrilateral structure the first framework 52 and the second framework 51 the position in four bights be provided with limited post, increase the contact area between circuit board, effectively can improve the useful life of button; Be provided with reference column 4 in the middle part of described base 3, the lower end of back-moving spring 7 is socketed in reference column 4, and upper end and the keycap 6 of back-moving spring 7 support; Knock keycap under external force, back-moving spring pressure scissor mechanism sinking is simultaneously moved down light barrier 53 to be blocked in the middle of transmitting terminal and receiving terminal, and switch produces an ON signal and inputs, after external force removes, keycap resets under the effect of back-moving spring, completes and once inputs.Due to the effect of back-moving spring, make keycap can Rapid reset, accelerate the speed of input.In the utility model, optocoupler has that volume is little, the life-span is long, contactless, the advantages such as antijamming capability is strong, light barrier is arranged in the first framework of scissor mechanism, in the stressed pressure of keycap and the course of action that rebounds, the transmitting terminal of light barrier 53 pairs of optocouplers and receiving terminal carry out stopping and not stopping the conducting and disconnection that realize the signal of telecommunication.
The utility model can also be realized by following scheme.
As a kind of execution mode of the present utility model, described keyboard also comprises electric connecting sheet 2, electric connecting sheet 2 is electrically connected with circuit board, the mounting groove being provided with electric connecting sheet 2 is provided with bottom base 3, mounting groove is identical with installing hole, and transmitting terminal and the receiving terminal of described optocoupler are fixed on electric connecting sheet by installation position.Preferably, described electric connecting sheet comprises pair of pins, and described pin is electrically connected with circuit board.
In the utility model, circuit board is not defined as the circuit board of a certain structure, and can be any one circuit board that can be suitable for the keyboard of scissor leg structure, as a kind of execution mode of the present utility model, described circuit board be film circuit board or pcb board.
As a kind of execution mode of the present utility model, the transmitting terminal of described optocoupler 8 and receiving terminal are fixed on circuit boards.
As a kind of execution mode of the present utility model, described keycap 6 fastens on the base 3, scissor mechanism 5, back-moving spring 7 and optocoupler 8 is enclosed in containing cavity.
In the utility model, described optocoupler 8 is selected from the one in light-emitting diode and photodiode, phototriode, photo resistance etc.
Above-mentioned execution mode is only preferred implementation of the present utility model; can not limit the scope of the utility model protection with this, change and the replacement of any unsubstantiality that those skilled in the art does on basis of the present utility model all belong to the utility model scope required for protection.
Claims (7)
1. a keyboard, comprises base plate, by lower circuit board from being above successively set on base plate, base, scissor mechanism and keycap; It is characterized in that: it also comprises back-moving spring and optocoupler;
Described optocoupler comprises transmitting terminal and receiving terminal;
Described base is provided with the containing cavity holding scissor mechanism, in described containing cavity, is provided with the installation position of installing transmitting terminal and receiving terminal; The bottom of transmitting terminal and receiving terminal is fixing to be electrically connected with circuit board;
Described scissor mechanism comprises the first framework and second framework of quadrilateral structure; It is inner that described first framework is positioned at the second framework, the middle part inside the second framework is connected to by axis of rotation in the middle part of it, the position in four bights of the first framework and the second framework is provided with limited post, the position that base corresponds to limited post arranges the hole slot matched with limited post, and limited post can be installed in hole slot just; Described first framework arranges light barrier, and light barrier is between transmitting terminal and receiving terminal;
Be provided with reference column in the middle part of described base, the lower end of back-moving spring is socketed on base reference column, and upper end and the keycap of back-moving spring support.
2. keyboard according to claim 1, it is characterized in that: described keyboard also comprises electric connecting sheet, electric connecting sheet is electrically connected with circuit board, the mounting groove being provided with electric connecting sheet is provided with at base bottom, mounting groove communicates with installation position, and transmitting terminal and the receiving terminal of described optocoupler are fixed on electric connecting sheet by installation position.
3. keyboard according to claim 2, is characterized in that: described electric connecting sheet comprises pair of pins, and described pin is electrically connected with circuit board.
4. keyboard according to claim 1, is characterized in that: described circuit board is film circuit board or pcb board.
5. keyboard according to claim 1, is characterized in that: the transmitting terminal of described optocoupler and receiving terminal are fixed on circuit boards.
6. keyboard according to claim 1, is characterized in that: described keycap is fastened on base, scissor mechanism, back-moving spring and optocoupler is enclosed in containing cavity.
7. keyboard according to claim 1, is characterized in that: described optocoupler is the one in light-emitting diode and photodiode, phototriode, photo resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630363.9U CN204117903U (en) | 2014-10-27 | 2014-10-27 | A kind of keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420630363.9U CN204117903U (en) | 2014-10-27 | 2014-10-27 | A kind of keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204117903U true CN204117903U (en) | 2015-01-21 |
Family
ID=52335191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420630363.9U Withdrawn - After Issue CN204117903U (en) | 2014-10-27 | 2014-10-27 | A kind of keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204117903U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299818A (en) * | 2014-10-27 | 2015-01-21 | 东莞市名键电子科技有限公司 | Keyboard key |
| CN107180718A (en) * | 2017-07-11 | 2017-09-19 | 东莞市高特电子有限公司 | A kind of heavy template die group optoelectronic switch and keyboard |
| TWI615874B (en) * | 2015-07-30 | 2018-02-21 | 達方電子股份有限公司 | Keyswitch structure |
-
2014
- 2014-10-27 CN CN201420630363.9U patent/CN204117903U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299818A (en) * | 2014-10-27 | 2015-01-21 | 东莞市名键电子科技有限公司 | Keyboard key |
| TWI615874B (en) * | 2015-07-30 | 2018-02-21 | 達方電子股份有限公司 | Keyswitch structure |
| CN107180718A (en) * | 2017-07-11 | 2017-09-19 | 东莞市高特电子有限公司 | A kind of heavy template die group optoelectronic switch and keyboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20160921 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |