CN113157105A - Polylactic acid flexible keyboard - Google Patents
Polylactic acid flexible keyboard Download PDFInfo
- Publication number
- CN113157105A CN113157105A CN202110504676.4A CN202110504676A CN113157105A CN 113157105 A CN113157105 A CN 113157105A CN 202110504676 A CN202110504676 A CN 202110504676A CN 113157105 A CN113157105 A CN 113157105A
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- China
- Prior art keywords
- polylactic acid
- keyboard
- flexible
- touch pad
- paper
- 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.)
- Pending
Links
- 229920000747 poly(lactic acid) Polymers 0.000 title claims abstract description 90
- 239000004626 polylactic acid Substances 0.000 title claims abstract description 90
- 238000007639 printing Methods 0.000 claims abstract description 45
- 239000010410 layer Substances 0.000 claims abstract description 44
- 238000003825 pressing Methods 0.000 claims abstract description 31
- 239000011241 protective layer Substances 0.000 claims abstract description 13
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 36
- 239000000123 paper Substances 0.000 claims description 34
- 239000003990 capacitor Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 10
- 239000011088 parchment paper Substances 0.000 claims description 10
- 229920003023 plastic Polymers 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 10
- 238000007731 hot pressing Methods 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000000748 compression moulding Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000002648 laminated material Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000010041 electrostatic spinning Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 239000012620 biological material Substances 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000001739 rebound effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 206010070245 Foreign body Diseases 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001523 electrospinning Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000013003 hot bending Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
- G06F3/0221—Arrangements for reducing keyboard size for transport or storage, e.g. foldable keyboards, keyboards with collapsible keys
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
The invention discloses a polylactic acid flexible keyboard, which comprises an ink printing touch pad, wherein a matched flexible fabric layer is fixedly arranged at the bottom of the ink printing touch pad, a matched integrated finger pressing keyboard is fixedly arranged at the top of the ink printing touch pad, a circuit control chip is embedded between the ink printing touch pad and the integrated finger pressing keyboard, the ink printing touch pad is connected with the circuit control chip, and a matched polylactic acid composite key position film is fixedly arranged at the top of the integrated finger pressing keyboard. The invention has simple structure and light and thin shape, adopts novel biological material polylactic acid as the top surface and bottom surface protective layers, is effective waterproof, dirt-resistant and degradable, can be bent at will and is convenient to carry.
Description
Technical Field
The invention belongs to the technical field of keyboard equipment, and particularly relates to a polylactic acid flexible keyboard.
Background
A keyboard is a command and data input device used to operate a computer device and also refers to a set of function keys (e.g., typewriter, computer keyboard) arranged to operate a machine or device through the system.
However, the keyboard on the market is usually made of plastic and metal as main materials, so that the keyboard cannot be bent, is large in size and is inconvenient to carry; secondly, most of the keyboard materials on the market are non-degradable materials, and a large amount of electronic garbage is generated after the keyboard materials are used and discarded, so that the environment is seriously harmed; moreover, when people working in computer office for a long time use the traditional rigid keyboard, the problems of joint fatigue, finger pain and the like are easy to generate; finally, most keyboards do not have the function of preventing water and foreign matters, and information on letter keys is easy to wear and tear, and key caps need to be replaced regularly, and the like.
Disclosure of Invention
The invention aims to provide a polylactic acid flexible keyboard to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a polylactic acid flexible keyboard, includes ink printing touch pad, and ink printing touch pad bottom is fixed to be provided with matched with flexible fabric layer, and ink printing touch pad top is fixed to be provided with matched with integral type and indicates to press the keyboard, and ink printing touch pad and integral type indicate to press to inlay between the keyboard and be equipped with a circuit control chip, ink printing touch pad with circuit control chip connects, and the integral type indicates to press the fixed compound key position membrane that is provided with matched with polylactic acid in keyboard top.
Preferably, the polylactic acid composite key position film is formed by compression molding of a polylactic acid protective layer and a parchment paper key position film layer, and the polylactic acid protective layer is fixedly arranged on the top of the parchment paper key position film layer.
Preferably, the flexible fabric layer is a polylactic acid fiber layer.
Preferably, the integrated finger-pressing keyboard comprises a plurality of flexible keycaps, all the flexible keycaps are connected together through a connecting layer, a first contact is fixedly arranged at the central point of any one of the flexible keycaps, and all the first contacts are matched with the ink printing touch pad.
Preferably, the ink printing touch pad comprises a positive capacitor sheet and a negative capacitor sheet, wherein conductive ink layers are printed on the positive capacitor sheet and the negative capacitor sheet, and a second contact is arranged on any key position of the two conductive ink layers corresponding to the integrated finger-pressing keyboard; an insulating plastic separation sheet is arranged between the positive capacitor sheet and the negative capacitor sheet in a matching way.
Preferably, the polylactic acid composite key position film, the integrated finger pressing keyboard, the ink printing touch pad and the flexible fabric layer are fixedly connected by a hot-press sealing method; the positive capacitor plate, the negative capacitor plate and the insulating plastic spacer are all synthesized by taking polylactic acid as a raw material through an electrostatic spinning technology.
Preferably, the integrated finger-pressing keyboard further comprises a handle fixedly arranged on the side portion of the polylactic acid flexible keyboard, and two ends of the handle are fixedly arranged between the integrated finger-pressing keyboard and the ink printing touch panel.
Preferably, the polylactic acid protective layer is a polylactic acid laminated material, and the manufacturing method of the polylactic acid laminated material comprises the following steps:
(1) pretreating the demoulding paper;
(2) after the polylactic acid material is hot-melted by a water bath method, the polylactic acid material is molded into an elliptical shape;
(3) placing an elliptical polylactic acid material between metal pressing plates through demoulding paper, and positioning the center;
(4) placing the elliptical polylactic acid material in the center of a hot press, and demolding after compression molding;
(5) and (5) repeating the steps (2) to (4) to carry out secondary demoulding to obtain the polylactic acid pressing sheet material.
Preferably, the release paper is transparent PET abrasive paper, and the pretreatment of the release paper comprises the steps of polishing the release paper by using the abrasive paper and then washing by using clear water.
Preferably, the placing the elliptical polylactic acid material between the metal pressing plates through the release paper comprises coating the release agent on the release paper, placing the elliptical polylactic acid material between two layers of release paper, and placing the two layers of release paper between two metal plates.
Preferably, the temperature of the hot press for one time is 180 ℃, the pressure is 16kPa, and the hot press is carried out for 5 minutes; and hot pressing for 5 minutes at the hot pressing temperature of 150 ℃ and the pressure of 16 kPa.
Compared with the prior art, the invention has the beneficial effects that:
the invention has simple structure and light and thin shape, adopts novel biological material polylactic acid as the top surface and bottom surface protective layers, is effective waterproof, dirt-resistant and degradable, can be bent at will and is convenient to carry.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a perspective view of the present invention.
Fig. 3 is a schematic structural diagram of the key in fig. 1.
Fig. 4 is a top view of fig. 1 at 9.
FIG. 5 is a key diagram of the present invention.
Fig. 6 is a schematic view of the bending operation of the present invention.
The labels in the figure are: the multifunctional paper cutting machine comprises a polylactic acid protective layer 1, a parchment paper key position film layer 2, handles 3 and 4, a positive capacitor sheet 5, an insulating plastic barrier sheet 6, a negative capacitor sheet 7, a flexible fabric layer 8, an integrated finger-pressing key 9 and a circuit control chip 10.
Detailed Description
The technical solution of the present invention will be further explained with reference to the following detailed description and the accompanying drawings, and the scope of protection of the present invention is not limited thereto.
The utility model provides a polylactic acid flexible keyboard, includes printing ink printing touch pad, and printing ink printing touch pad bottom is fixed to be provided with matched with flexible fabric layer, and printing ink printing touch pad top is fixed to be provided with matched with integral type and indicates to press the keyboard, and printing ink printing touch pad and integral type indicate to press to inlay between the keyboard and be equipped with a circuit control chip, circuit control chip with printing ink printing touch pad is connected, and integral type indicates to press the fixed compound key position membrane that is provided with matched with polylactic acid in keyboard top.
In the invention, the ink printing touch panel is a circuit printing plate, the circuit control chip is used for converting the electric signal of the circuit printing plate into a digital signal, and how the ink printing touch panel and the circuit control chip are arranged in a matching way to realize the conversion of the electric signal and the digital signal into the common knowledge in the field, and the technical personnel in the field can set the circuit printing touch panel according to the actual situation.
The flexible fabric layer is a polylactic acid fiber layer. The polylactic acid fiber layer is made of flexible polylactic acid fiber materials, has the characteristics of low density, soft texture and large gaps for ventilation, and still has a very good rebound effect in the long-time pressing process.
The polylactic acid composite key position film is formed by compression molding of a polylactic acid protective layer and a parchment paper key position film layer, and the polylactic acid protective layer is fixedly arranged on the top of the parchment paper key position film layer.
In the invention, the key position film layer of the parchment paper is obtained by transferring key position information to the parchment paper through a thermal transfer technology; then, the bond film layer of the parchment paper and the polylactic acid protective layer are integrated through a high-temperature high-pressure mould pressing technology, the good associativity is achieved, meanwhile, the bond information is enabled to be located inside the polylactic acid composite bond film, and the color fading and abrasion of the bond information caused by long-time use can be avoided. As shown in FIG. 5, 104 key bits of information are set. The polylactic acid protective layer is a polylactic acid pressing sheet material made of matte frosting materials, and is smooth and fine in hand feeling, waterproof and dirt-resistant.
The biodegradable plastic polylactic acid can be degraded by 100 percent after being used and discarded.
The manufacturing method of the polylactic acid laminating material comprises the following steps:
(1) the method comprises the steps of pretreating the release paper, wherein the release paper is transparent PET abrasive paper, the surface of the release paper is provided with a frosted texture, the pretreatment of the release paper comprises the steps of sanding and polishing the release paper by 500-mesh abrasive paper, washing by clean water at normal temperature to remove impurities after polishing, drying the release paper by a hot air gun/blower, and blowing until the temperature is not higher than 80 ℃ or the release paper is subjected to hot bending deformation until no moisture exists on the surface, and naturally cooling to the normal temperature.
(2) The polylactic acid material is heated to 60-80 ℃ by a water bath method to be in a hot-melting state, in the state, the polylactic acid material is molded to be in an oval shape by a wood appliance, and appliances such as metal and plastic cannot be used, otherwise, the polylactic acid material is fused with the polylactic acid material in the hot-melting state.
(3) Placing an elliptical polylactic acid material between metal pressing plates through demoulding paper, and positioning the center, wherein the method specifically comprises the following steps: coating a release agent on each piece of release paper, placing 20 g of elliptical polylactic acid material between two layers of release paper, placing the two layers of release paper between two metal pressing plates of 30cm x 30cm, positioning the elliptical polylactic acid material by using a positioning pressing block, and how to position the elliptical polylactic acid material by using the positioning pressing block is common knowledge in the field, and the person skilled in the art can set the release agent according to the actual situation.
(4) Placing the center of the elliptical polylactic acid material at the center of a hot press, performing compression molding, naturally cooling, and demolding; according to the invention, the elliptical polylactic acid material is placed in the center of the hot press, so that the stress is uniform.
(5) Repeating the steps (2) to (4) to carry out secondary demoulding to obtain a polylactic acid pressing sheet material; it is noted here that a second pass of the release agent is required to be brushed on the release paper.
The temperature of the hot press is 180 ℃ and the pressure is 16kPa during the first hot pressing, and the hot press is used for 5 minutes; and hot pressing at the second hot pressing for 5 minutes at the hot pressing temperature of 150 ℃ and the pressure of 16 kPa.
In the invention, the secondary tabletting technology ensures the full extension of the polylactic acid material, so that the polylactic acid material has thinner characteristic. Compared with the traditional demolding process, the obtained polylactic acid tabletting material has the characteristics of quick demolding effect, clear surface texture effect, uniform tabletting thickness and the like through the tabletting process.
The integrated finger-pressing keyboard comprises a plurality of flexible keycaps, all the flexible keycaps are connected together through a connecting layer, a first contact is fixedly arranged at the central point of any flexible keycap, and all the first contacts are matched with the ink printing touch pad.
According to the invention, the whole keycap is of a circular truncated cone-shaped composite structure, the bottom of the keycap is provided with an opening, the first contact is arranged on the lower surface of the top of the keycap, as shown in fig. 3, the flexible keycap and the connecting layer are both made of silica gel materials, the rebound effect is good, and the function of the traditional spring keycap can be replaced.
The ink printing touch pad comprises a positive capacitor piece and a negative capacitor piece, wherein conductive ink layers are printed on the positive capacitor piece and the negative capacitor piece, and a second contact is arranged on any key position of the two conductive ink layers corresponding to the integrated finger pressing keyboard; an insulating plastic separation sheet is arranged between the positive capacitor sheet and the negative capacitor sheet in a matching way.
In the invention, the conductive ink layer of the positive capacitor plate and the conductive ink layer of the negative capacitor plate are correspondingly arranged, the second contacts on the two conductive ink layers are also correspondingly arranged, and the second contacts on the two conductive ink layers are both connected with the circuit control chip; the insulating plastic barrier sheet is provided with a matched through hole at each second contact; under normal conditions, positive and negative capacitance sheets can be separated, and the first contact of the integrated finger pressing key can connect the second contact of the positive and negative circuits to form a closed-loop path so as to realize instruction sending.
The positive capacitor plate, the negative capacitor plate and the insulating plastic barrier plate are all synthesized by taking polylactic acid as a raw material through an electrostatic spinning technology.
Electrospinning is a special fiber manufacturing process, where polymer solutions or melts are jet spun in a strong electric field. Under the action of an electric field, liquid drops at the needle head change from a spherical shape to a conical shape, and fiber filaments are obtained by extending from the tip of the conical shape, so that polymer filaments with nanometer-scale diameters can be produced, and the obtained positive capacitor plate, negative capacitor plate and insulating material barrier plate are thin and degradable. And the positive and negative capacitance sheets are printed by adopting conductive ink, wherein the conductive ink is adopted for circuit printing as a raw material, the conductive ink is added into a circuit printer, circuit vector diagram information is introduced into a computer and is subjected to positioning analysis on the computer, after the correction is finished, the circuit printing is started, about 12 hours are needed to wait, and the conductive ink can be completely dried and taken out.
The polylactic acid flexible keyboard further comprises a lifting handle fixedly arranged on the side portion of the polylactic acid flexible keyboard, and two ends of the lifting handle are fixedly arranged between the integrated finger pressing keyboard and the ink printing touch plate. In the invention, the lifting handle is arranged, so that the carrying is convenient.
The polylactic acid composite key position film, the integrated finger pressing keyboard, the ink printing touch pad and the flexible fabric layer are fixedly connected through a hot-pressing sealing method.
The invention integrally adopts the hot edge sealing technology, so that the keyboard is integrated, can be bent and curled at will, is convenient to carry, and is waterproof and foreign-body-proof.
According to the polylactic acid flexible keyboard, the circuit control chip is provided with the USB interface, when the polylactic acid flexible keyboard is used, a user is required to connect the keyboard to input equipment through an external USB data line, key position information is determined through the polylactic acid composite key position film, a finger presses a corresponding position, so that the integrated finger-pressing key is recessed, a corresponding first contact can accurately correspond to a second contact on positive and negative capacitance sheets, a closed-loop path is realized, and instruction transmission is completed; after the keyboard is used, the keyboard can be bent at any angle, and the carrying is convenient.
Claims (10)
1. The utility model provides a polylactic acid flexible keyboard, its characterized in that, includes printing ink printing touch pad, and printing ink printing touch pad bottom is fixed to be provided with matched with flexible fabric layer, and printing ink printing touch pad top is fixed to be provided with matched with integral type and indicates to press the keyboard, and printing ink printing touch pad and integral type indicate to press to inlay between the keyboard and be equipped with a circuit control chip, printing ink printing touch pad with circuit control chip connects, and integral type indicates to press the fixed compound key position membrane of matched with polylactic acid that is provided with in keyboard top.
2. The polylactic acid flexible keyboard according to claim 1, wherein the polylactic acid composite key film is formed by compression molding of a polylactic acid protective layer and a parchment paper key film layer, and the polylactic acid protective layer is fixedly arranged on the top of the parchment paper key film layer.
3. The polylactic acid flexible keyboard according to claim 1, wherein said flexible fabric layer is a polylactic acid fiber layer.
4. The polylactic acid flexible keyboard according to claim 1, wherein the integrated finger-pressing keyboard comprises a plurality of flexible key caps, all the flexible key caps are connected together through a connecting layer, a first contact is fixedly arranged at the central point of any one of the flexible key caps, and all the first contacts are matched with the ink-printed touch pad.
5. The polylactic acid flexible keyboard according to claim 1, wherein the ink printed touch panel comprises a positive capacitor plate and a negative capacitor plate, wherein the positive capacitor plate and the negative capacitor plate are printed with conductive ink layers, and a second contact is arranged on each conductive ink layer corresponding to any key position of the integrated finger-pressing keyboard; an insulating plastic separation sheet is arranged between the positive capacitor sheet and the negative capacitor sheet in a matching way.
6. The polylactic acid flexible keyboard according to claim 5, wherein the polylactic acid composite key position film, the integrated finger-pressure keyboard, the ink printed touch pad and the flexible fabric layer are fixedly connected by a hot-press sealing method; the positive capacitor plate, the negative capacitor plate and the insulating plastic spacer are all synthesized by taking polylactic acid as a raw material through an electrostatic spinning technology.
7. The polylactic acid flexible keyboard according to claim 2, wherein the polylactic acid protective layer is a polylactic acid laminated material, and the manufacturing method of the polylactic acid laminated material comprises:
(1) pretreating the demoulding paper;
(2) after the polylactic acid material is hot-melted by a water bath method, the polylactic acid material is molded into an elliptical shape;
(3) placing an elliptical polylactic acid material between metal pressing plates through demoulding paper, and positioning the center;
(4) placing the elliptical polylactic acid material in the center of a hot press, and demolding after compression molding;
(5) and (5) repeating the steps (2) to (4) to carry out secondary demoulding to obtain the polylactic acid pressing sheet material.
8. The polylactic acid flexible keyboard according to claim 7, wherein said release paper is a transparent PET abrasive paper, and the pretreatment of the release paper comprises a rinsing with clean water after the release paper is ground by the abrasive paper.
9. The polylactic acid flexible keyboard according to claim 7, wherein the placing of the oval polylactic acid material between the metal pressing plates through the release paper comprises applying a release agent on the release paper, placing the oval polylactic acid material between a double layer of release paper, and placing the double layer of release paper between the metal plates.
10. The polylactic acid flexible keyboard according to claim 7, wherein the hot press is used for 5 minutes at a temperature of 180 ℃ and a pressure of 16 kPa; and hot pressing for 5 minutes at the hot pressing temperature of 150 ℃ and the pressure of 16 kPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110504676.4A CN113157105A (en) | 2021-05-10 | 2021-05-10 | Polylactic acid flexible keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110504676.4A CN113157105A (en) | 2021-05-10 | 2021-05-10 | Polylactic acid flexible keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113157105A true CN113157105A (en) | 2021-07-23 |
Family
ID=76874036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110504676.4A Pending CN113157105A (en) | 2021-05-10 | 2021-05-10 | Polylactic acid flexible keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113157105A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103711A (en) * | 1986-05-20 | 1987-12-02 | 联合无线电(澳大利西亚)有限公司 | Membrane keyboard |
| CN200941353Y (en) * | 2006-05-15 | 2007-08-29 | 李钊由 | Soft touching computer keyboard |
| CN102612490A (en) * | 2009-04-03 | 2012-07-25 | 沃尔贝克材料有限公司 | Polymer compositions containing graphene sheets and graphite |
| CN203338244U (en) * | 2013-05-21 | 2013-12-11 | 天津铂创国茂电子科技发展有限公司 | Portable foldable touch keyboard |
| CN206076125U (en) * | 2016-10-19 | 2017-04-05 | 江海波 | A kind of flexible glue keyboard that hard piece is switched with convex |
| CN112583396A (en) * | 2019-09-27 | 2021-03-30 | 苹果公司 | Strain sensing key membrane |
-
2021
- 2021-05-10 CN CN202110504676.4A patent/CN113157105A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103711A (en) * | 1986-05-20 | 1987-12-02 | 联合无线电(澳大利西亚)有限公司 | Membrane keyboard |
| CN200941353Y (en) * | 2006-05-15 | 2007-08-29 | 李钊由 | Soft touching computer keyboard |
| CN102612490A (en) * | 2009-04-03 | 2012-07-25 | 沃尔贝克材料有限公司 | Polymer compositions containing graphene sheets and graphite |
| CN203338244U (en) * | 2013-05-21 | 2013-12-11 | 天津铂创国茂电子科技发展有限公司 | Portable foldable touch keyboard |
| CN206076125U (en) * | 2016-10-19 | 2017-04-05 | 江海波 | A kind of flexible glue keyboard that hard piece is switched with convex |
| CN112583396A (en) * | 2019-09-27 | 2021-03-30 | 苹果公司 | Strain sensing key membrane |
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