CN104579294A - Capacitor-type key unit and keyboard with key unit - Google Patents
Capacitor-type key unit and keyboard with key unit Download PDFInfo
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- CN104579294A CN104579294A CN201510007239.6A CN201510007239A CN104579294A CN 104579294 A CN104579294 A CN 104579294A CN 201510007239 A CN201510007239 A CN 201510007239A CN 104579294 A CN104579294 A CN 104579294A
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- electrode
- elastic conductor
- key unit
- pressing body
- insulator
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- 239000004020 conductor Substances 0.000 claims abstract description 63
- 238000003825 pressing Methods 0.000 claims abstract description 44
- 239000012212 insulator Substances 0.000 claims abstract description 20
- 230000008878 coupling Effects 0.000 claims abstract description 15
- 238000010168 coupling process Methods 0.000 claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims abstract description 12
- 239000011159 matrix material Substances 0.000 claims description 27
- 230000004888 barrier function Effects 0.000 claims description 18
- 238000005516 engineering process Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005234 chemical deposition Methods 0.000 claims description 2
- 238000009713 electroplating Methods 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000008859 change Effects 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- -1 bracing frame Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Abstract
The invention provides a capacitor-type key unit. The capacitor-type key unit comprises a pressing body, an elastic conductor, a supporting frame, a base body, a first electrode, a second electrode, a first insulator and a second insulator. One end of the pressing body elastically abuts against the elastic conductor, the pressing body and the elastic conductor are supported by the supporting frame, the first insulator and the second insulator are arranged on the surfaces of two opposite sides of the base body respectively, the first electrode is clamped between the base body and the first insulator, the second electrode is arranged between the base body and the second insulator, and the elastic conductor is matched with the first electrode and the second electrode to form an adjustable coupling capacitor. The capacitor-type key unit is simple in structure, high in reliability, long in service life and low in cost. Meanwhile, the invention provides a keyboard with the key unit.
Description
Technical field
The present invention relates to electronic input apparatus, particularly relate to a kind of push-button unit and adopt the keyboard of described push-button unit.
Background technology
Along with the development of hyundai electronics science and technology, electronic product gos deep in the life of people gradually, each electronic product, if telephone set, mobile phone, notebook computer, remote controller etc. are with daily life.
Push-button unit is as the input unit of above-mentioned electronic product, and its role is particularly important.The push-button unit of prior art mainly adopts thin film switch as switch element, when pressing keys, in described button folding process, exert pressure to described thin film switch, order about the conducting of described thin film switch self, physical mechanical input signal is converted to electronic input signal, realizes input action.
But still there is following defect in above-mentioned design:
First, need mutually contact repeatedly to realize conducting between the electrode of mechanical switch button, cause mutual frictional dissipation between electrode, reduce button reliability, reduction of service life;
Secondly, in order to improve pressing sensitivity, needing to arrange the good material of the conductivity such as gold, silver at electrode surface, so, causing cost to increase.
Summary of the invention
In order to solve the technical problem that prior art keyboard reliability is low, useful life is short and cost is high, the invention provides that a kind of reliability is high, long service life and the low capacitance key unit of cost and adopt the keyboard of described push-button unit.
A kind of capacitance key unit, comprise pressing body, elastic conductor, bracing frame, matrix, first electrode, second electrode, first insulator and the second insulator, described pressing body one end elasticity compresses described elastic conductor, support frame as described above supports described pressing body and described elastic conductor, two opposite flanks of described matrix are located at respectively by described first insulator and described second insulator, described first electrode holder is located between described matrix and described first insulator, described second electrode is located between described matrix and described second insulator, described elastic conductor other end elasticity abuts described first insulator and arranges, and coordinate described first electrode and the second electrode to form adjustable coupling capacitor.
In a kind of preferred embodiment of capacitance key unit provided by the invention, described pressing body presses the capacitance that described elastic conductor changes described adjustable coupling capacitor.
In a kind of preferred embodiment of capacitance key unit provided by the invention, described elastic conductor changes the coupling capacitance between described first electrode, the second electrode by elastic telescopic deformation.
In a kind of preferred embodiment of capacitance key unit provided by the invention, vertically, described first electrode and described second electrode gap are arranged, and point are located at described matrix two opposite flank.
In a kind of preferred embodiment of capacitance key unit provided by the invention, vertically, the center of described elastic conductor is between the center of described first electrode and the second electrode horizontal direction line.
In a kind of preferred embodiment of capacitance key unit provided by the invention, described elastic conductor is stainless steel spring.
In a kind of preferred embodiment of capacitance key unit provided by the invention, described first electrode and the second electrode adopt chemical deposition or electroplating technology to be formed in described matrix surface.
A kind of keyboard, described keyboard comprises keycap and the supporting bracket of the setting of multiple array, described supporting bracket comprises multiple through hole, described keyboard also comprises multiple pressing body, multiple elastic conductor and circuit board, described multiple pressing body array is arranged, described keycap respectively corresponding lid establishes described pressing body, in the through hole of the described supporting bracket of described elastic conductor correspondence collecting, and described elastic conductor is located between described circuit board and described pressing body, described circuit board comprises matrix, multiple first electrode, multiple second electrode and the first insulating barrier, second insulating barrier, described multiple first electrode and described multiple second electrode divide and are located at described matrix two opposite flank, described first electrode holder is located between described first insulating barrier and described matrix, described second electrode holder is located between described second insulating barrier and described matrix, described first electrode, described second electrode coordinates the coupling of described elastic conductor to form adjustable coupling capacitor.
In a kind of preferred embodiment of keyboard provided by the invention, described keyboard also comprises the row drive wire of multiple array setting and multiple column drive wire, described row drive wire should be electrically connected with described first electrode pair respectively, and described column drive wire should be electrically connected with described second electrode pair respectively.
In a kind of preferred embodiment of keyboard provided by the invention, described keyboard also comprises driving chip, described driving chip is corresponding with described row drive wire and described column drive wire to be respectively electrically connected, described driving chip receives the capacitance variations of adjustable condenser, and feedback control signal controls the operating state of described button.
Compared with prior art, capacitance key unit provided by the invention and adopt the advantage of the keyboard of described push-button unit to be:
One, capacitance key unit provided by the invention adopts the electrode slice substitution film switch of mutually isolated setting, avoids electrode contact to wear and tear, and improves production reliability, increases the service life.
Two, capacitance key unit provided by the invention is because mutually isolated setting between electrode slice, so also do not need to increase in said electrode sheet outside to arrange the good conductors such as extra gold, silver, reduces costs further.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the perspective exploded view of keyboard provided by the invention;
Fig. 2 is the side sectional view of a wherein push-button unit of keyboard shown in Fig. 1;
Fig. 3 is the side schematic surface of circuit board shown in Fig. 1;
Fig. 4 is the opposite side schematic surface of circuit board shown in Fig. 1;
Fig. 5 is the line construction schematic diagram after the superposition of circuit board shown in Fig. 1;
Fig. 6 is the side sectional view of circuit board shown in Fig. 1;
Fig. 7 is the side sectional view of a kind of operating state of push-button unit of the present invention;
Fig. 8 is the side sectional view of the another kind of operating state of push-button unit of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, it is the perspective view of keyboard provided by the invention.Described keyboard 1 comprises multiple keycap 11, multiple pressing body 13, multiple elastic conductor 15, supporting bracket 16, circuit board 17 and driving chip 18.
Described keycap 11 provides pressure to the interface of described keyboard 1 in order to the external world, and it comprises receiving space (not shown).Described multiple keycap 11 is arranged in array, and specifically, for the keyboard of various different model, it arranges corresponding accommodation, as keyboard of notebook computer, common keyboard etc.
Described pressing body 13 and described keycap 11 one_to_one corresponding.Described keycap 11 lid is located at described pressing body 13 end, makes described pressing body 13 correspondence be housed in the receiving space of described keycap 11, and the top of described pressing body 13 abuts described keycap 11 inner surface and arranges.When described keycap 11 moves up and down by External Force Acting, it promotes described pressing body 13 and synchronously vertically moves up and down.Described pressing body 13 comprises protruding 131, and it closes on described keycap 11 one end and arranges.
Again incorporated by reference to consulting Fig. 2, it is the side sectional view of a wherein push-button unit of keyboard shown in Fig. 1.The quantity of described elastic conductor 15 respectively with described pressing body 13 and described keycap 11 one_to_one corresponding.Described elastic conductor 15 is the springs adopting stainless steel metal materials processing.Described elastic conductor 15 one end is sheathed on described pressing body 13.The projection 131 of pressing body 13 described in the end abutment of described elastic conductor 15.When described keycap 11 vertically descending mobile time, it compresses described elastic conductor 15, and simultaneously described elastic conductor 15 produces reaction force acts in described pressing body 13.When cancelling External Force Acting, under described elastic conductor 15 recovers deforming force, described elastic conductor 15 promotes described pressing body 13 and the synchronous vertically up movement of described keycap 11.
Please again consult Fig. 1, described supporting bracket 16 is rectangular frames, it comprises multiple through hole 161, and the same array of described through hole 161 is located in described supporting bracket 16, and the position of described through hole 161 is corresponding with the position of described keycap 11, pressing body 13 and elastic conductor 15.The part of described pressing body 15 and described elastic conductor 15 correspondence are contained in described through hole 161, and described keycap 11 lid is located at described through hole 161 one end open place, and its inner surface abuts one end of described pressing body 13.
Incorporated by reference to consulting Fig. 3, Fig. 4, Fig. 5 and Fig. 6, wherein Fig. 3 is the side schematic surface of circuit board shown in Fig. 1, Fig. 4 is the opposite side schematic surface of circuit board shown in Fig. 1, Fig. 5 is the line construction schematic diagram after the superposition of circuit board line shown in Fig. 1, and Fig. 6 is the side sectional view of circuit board shown in Fig. 1.Described circuit board 17 comprises matrix 171, first electrode 173, second electrode 175, first insulating barrier 176, second insulating barrier 177, row array lines 178 and array alignment 179.
Described matrix 171 is insulating substrates of described first electrode 173, second electrode 175 of a carrying.Described first electrode 173 and described second electrode 175 are separately positioned on two opposite flanks of described matrix 171, and in the vertical direction, the spaced setting of projection of described first electrode 173, second electrode 175, that is, described first electrode slice 173 does not overlap each other with described second electrode 175 in the vertical direction.Described first insulating barrier 176, described second insulating barrier 177 are located at two opposite flanks of described matrix 171 respectively, and described first electrode 173 is located between described first insulating barrier 176 and described matrix 171.Described second electrode 175 is located between described second insulating barrier 177 and described matrix 171.Described first insulating barrier 176, first electrode 173, matrix 171, second electrode 175, second insulating barrier 177 are cascading, and described first insulating barrier 176 closes on the setting of described elastic conductor 15 side.
Setting described circuit board 17 surperficial place plane is horizontal plane, being parallel to direction, described board edge side is X-direction, be Y direction perpendicular to described X-direction, then described row array lines 178 is parallel to X-direction, and multiple row array lines 178 is spaced arrangement arranges.Described row array lines 178 is located at the same side with described first electrode 173, and its one end is arranged with corresponding electrical connection of described first electrode 173 respectively.Described array alignment 179 is located at homonymy with described second electrode 175, and its one end is arranged with corresponding electrical connection of described second electrode 175 respectively.
Described driving chip 18 is located at the surface of described circuit board, and described driving chip 18 is corresponding with the other end of described first electrode 173, second electrode 175 is electrically connected.
When assembling above-mentioned keyboard 1, it comprises the steps:
First, described circuit board 17 and driving chip 18 are provided, described driving chip 18 is located at described circuit board 17, and described driving chip 18 by row array lines 178, array alignment 179 is corresponding with the first electrode 173, second electrode 175 of described circuit board 17 is respectively electrically connected;
Secondly, provide support plate 16, circuit board 17, described supporting bracket 16 and the superimposed setting of described circuit board 17;
Then, pressing body 13 and elastic conductor 15 are provided, described elastic conductor 15 is sheathed on described pressing body 13 one end, its one end abuts the projection 131 of described pressing body 13, the other end abuts first insulating barrier 176 on described circuit board 17 surface, and the other end of described pressing body 13 and described elasticity 15 conductor runs through the through hole 161 of described supporting bracket 16;
Moreover provide keycap 11, described keycap 11 lid is located at described pressing body 13 end, and the opening part of corresponding described through hole 161, so far, complete the assembling of described keyboard 1.
In above-mentioned keyboard 1, get wherein keycap 11, pressing body 13, elastic conductor 15, supporting bracket 16, circuit board 17 and driving chip 18 and form a push-button unit, then described keyboard 1 comprises multiple push-button unit, the corresponding input signal of each push-button unit, the conducting operating different key unit respectively whether, realizes the different input demand to described keyboard 1.
In each push-button unit, described first electrode 173, second electrode 175 that described elastic conductor 15 coordinates coupling to arrange forms the adjustable coupling capacitor of capacitance.Wherein in the vertical direction, the center being centrally located at the horizontal line of described first electrode 173, second electrode 175 of described elastic conductor 15.Described first electrode 173, second electrode 175 intercouples formation capacitor, and described elastic conductor 15 is located at the center of described first electrode 173, second electrode 175 horizontal direction line.According to the computing formula of electric capacity, capacitance represents its ability holding electric charge usually, and setting letter C represents, the then capacitance C=ε S/4 π kd of capacitor, wherein d is the spacing between electrode, and the right opposite that S represents electrode amasss, ε represents dielectric constant, and k is dielectric constant.In push-button unit, between described first electrode 173, second electrode 175, d fixes.Because the existence of described elastic conductor 15, it is between described first electrode 173 and described second electrode 175, then when described elastic conductor 15 is by pressed by external force effect, described elastic conductor 15 acts on described first electrode 173 as medium, electric field between second electrode 175, along with the compressive deformation of described elastic conductor 15, it is to described first electrode 173, electric field action between second electrode 175 constantly changes, that is, its DIELECTRIC CONSTANT ε changes along with the flexible of elastic conductor 15, when in its compressed state, because described elastic conductor 15 fills described first electrode 173, electric field between second electrode 175, when being in elongation state, because described elastic conductor 15 fills the electric field between described first electrode 173, second electrode 175 on a small quantity, therefore elastic conductor 15 compresses and in the process recovered, the corresponding dynamic change of its DIELECTRIC CONSTANT ε.Therefore, when the described keycap 11 of pressing, and then drive the descending movement of described pressing body 13, compress described elastic conductor 15, change the dielectric constant of described elastic conductor 15, result changes the capacitance C be present between described first electrode 173, second electrode 175; When cancelling External Force Acting, change because of the extension of described elastic conductor 15 the capacitance C be present between described first electrode 173, second electrode 175 equally, described elastic conductor 15, first electrode 173, second electrode 175 of described row array lines 178, array alignment 179 correspondence feedback forms coupling capacitor variable quantity to described driving chip 18.Described driving chip 18 is according to the capacitance change received, and the corresponding operating state judging described push-button unit, to feed back drive singal, produces input signal.To those skilled in the art, it can set when capacitance increases to set point, then corresponding generation input signal, realize the input operation of described push-button unit, can also set when capacitance is decreased to set point, corresponding generation input signal, realizes the input operation of described push-button unit, specifically as shown in Figures 7 and 8.And the size of described set point, set flexibly according to the action need of different keyboard, in the present embodiment, the citing that differs repeats.
Compared to prior art, in push-button unit of the present invention, described elastic conductor 15, first electrode 173, second electrode 175 form capacitance with described elastomer 15 compressibility become and the adjustable coupling capacitor of synchronous change, whether the conducting of described push-button unit is defined by the capacitance variations value detecting described adjustable condenser, avoid adopting conductive film, avoid the contact friction loss between electrode completely, improve production reliability, increase the service life.Meanwhile, adopt cheap normal conductor as electrode, reduce good conductors such as using gold, silver, reduce costs further.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a capacitance key unit, it comprises:
Pressing body;
Elastic conductor, described pressing body one end elasticity compresses described elastic conductor; And
Bracing frame, support frame as described above supports described pressing body and described elastic conductor, it is characterized in that: described capacitance key unit also comprises matrix, first electrode, second electrode, first insulator and the second insulator, two opposite flanks of described matrix are located at respectively by described first insulator and described second insulator, described first electrode holder is located between described matrix and described first insulator, described second electrode is located between described matrix and described second insulator, described elastic conductor other end elasticity abuts described first insulator and arranges, and coordinate described first electrode and the second electrode to form adjustable coupling capacitor.
2. capacitance key unit according to claim 1, is characterized in that, described pressing body presses the capacitance that described elastic conductor changes described adjustable coupling capacitor.
3. capacitance key unit according to claim 2, is characterized in that, described elastic conductor changes the coupling capacitance between described first electrode, the second electrode by elastic telescopic deformation.
4. capacitance key unit according to claim 3, is characterized in that, vertically, described first electrode and described second electrode gap are arranged, and point is located at described matrix two opposite flank.
5. capacitance key unit according to claim 4, is characterized in that, vertically, the center of described elastic conductor is between the center of described first electrode and the second electrode horizontal direction line.
6. capacitance key unit according to claim 1, is characterized in that, described elastic conductor is stainless steel spring.
7. capacitance key unit according to claim 1, is characterized in that, described first electrode and the second electrode adopt printing coating, chemical deposition or electroplating technology to be formed in described matrix surface.
8. a keyboard, described keyboard comprises keycap and the supporting bracket of the setting of multiple array, described supporting bracket comprises multiple through hole, it is characterized in that, described keyboard also comprises multiple pressing body, multiple elastic conductor and circuit board, described multiple pressing body array is arranged, described keycap respectively corresponding lid establishes described pressing body, in the through hole of the described supporting bracket of described elastic conductor correspondence collecting, and described elastic conductor is located between described circuit board and described pressing body, described circuit board comprises matrix, multiple first electrode, multiple second electrode and the first insulating barrier, second insulating barrier, described multiple first electrode and described multiple second electrode divide and are located at described matrix two opposite flank, described first electrode holder is located between described first insulating barrier and described matrix, described second electrode holder is located between described second insulating barrier and described matrix, described first electrode, described second electrode coordinates the coupling of described elastic conductor to form adjustable coupling capacitor.
9. keyboard according to claim 8, it is characterized in that, also comprise the row drive wire of multiple array setting and multiple column drive wire, described row drive wire should be electrically connected with described first electrode pair respectively, and described column drive wire should be electrically connected with described second electrode pair respectively.
10. keyboard according to claim 9, it is characterized in that, also comprise driving chip, described driving chip is corresponding with described row drive wire and described column drive wire to be respectively electrically connected, described driving chip receives the capacitance variations of adjustable condenser, and controls the operating state of described push-button unit according to capacitance variations value feedback control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007239.6A CN104579294A (en) | 2015-01-07 | 2015-01-07 | Capacitor-type key unit and keyboard with key unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510007239.6A CN104579294A (en) | 2015-01-07 | 2015-01-07 | Capacitor-type key unit and keyboard with key unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104579294A true CN104579294A (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510007239.6A Pending CN104579294A (en) | 2015-01-07 | 2015-01-07 | Capacitor-type key unit and keyboard with key unit |
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| Country | Link |
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| CN (1) | CN104579294A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106548894A (en) * | 2015-09-17 | 2017-03-29 | 广东美的生活电器制造有限公司 | Button assembly and the soy bean milk making machine with which |
| CN109375784A (en) * | 2016-06-23 | 2019-02-22 | 株式会社音乐派索 | Electronic equipment with multi-functional man-machine interface |
| WO2020135044A1 (en) * | 2018-12-28 | 2020-07-02 | 维沃移动通信有限公司 | Key module and terminal |
| US11586299B2 (en) | 2016-05-01 | 2023-02-21 | Mokibo, Inc. | Electronic device having multi-functional human interface |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5995533U (en) * | 1982-12-17 | 1984-06-28 | 東プレ株式会社 | Capacitive key switch |
| US4482932A (en) * | 1981-07-30 | 1984-11-13 | Topre Corporation | Keyboard switch |
| US4659879A (en) * | 1985-03-11 | 1987-04-21 | Topre Corporation | Key switch |
| JP2004340662A (en) * | 2003-05-14 | 2004-12-02 | Omron Corp | Object detection sensor |
| JP2011243399A (en) * | 2010-05-18 | 2011-12-01 | Shin Etsu Polymer Co Ltd | Switch |
| US20140354577A1 (en) * | 2013-05-28 | 2014-12-04 | Ingar Hanssen | Multi-State Capacitive Button |
-
2015
- 2015-01-07 CN CN201510007239.6A patent/CN104579294A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4482932A (en) * | 1981-07-30 | 1984-11-13 | Topre Corporation | Keyboard switch |
| JPS5995533U (en) * | 1982-12-17 | 1984-06-28 | 東プレ株式会社 | Capacitive key switch |
| US4659879A (en) * | 1985-03-11 | 1987-04-21 | Topre Corporation | Key switch |
| JP2004340662A (en) * | 2003-05-14 | 2004-12-02 | Omron Corp | Object detection sensor |
| JP2011243399A (en) * | 2010-05-18 | 2011-12-01 | Shin Etsu Polymer Co Ltd | Switch |
| US20140354577A1 (en) * | 2013-05-28 | 2014-12-04 | Ingar Hanssen | Multi-State Capacitive Button |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106548894A (en) * | 2015-09-17 | 2017-03-29 | 广东美的生活电器制造有限公司 | Button assembly and the soy bean milk making machine with which |
| US11586299B2 (en) | 2016-05-01 | 2023-02-21 | Mokibo, Inc. | Electronic device having multi-functional human interface |
| US11747916B2 (en) | 2016-05-01 | 2023-09-05 | Mokibo, Inc. | Electronic device having multi-functional human interface |
| CN109375784A (en) * | 2016-06-23 | 2019-02-22 | 株式会社音乐派索 | Electronic equipment with multi-functional man-machine interface |
| CN109375784B (en) * | 2016-06-23 | 2022-03-11 | 株式会社音乐派索 | Electronic equipment with multifunctional man-machine interface |
| US11526213B2 (en) | 2016-06-23 | 2022-12-13 | Mokibo, Inc. | Electronic device having multi-functional human interface |
| WO2020135044A1 (en) * | 2018-12-28 | 2020-07-02 | 维沃移动通信有限公司 | Key module and terminal |
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Effective date of registration: 20180123 Address after: 518000 Guangdong city of Shenzhen province Nanshan District Guangdong streets Science Park Sceneway Ambassy court Plaza Pavilion 31E Applicant after: SHENZHEN LICHI INNOVATION TECHNOLOGY CO.,LTD. Address before: Nanshan District Kexing road Shenzhen City, Guangdong province 518000 No. 11 Shennan garden building A401 room Applicant before: Li Kan Applicant before: Huang Jianan |
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Application publication date: 20150429 |