CN204794959U - Touching device with NFC antenna - Google Patents
Touching device with NFC antenna Download PDFInfo
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- CN204794959U CN204794959U CN201520554520.7U CN201520554520U CN204794959U CN 204794959 U CN204794959 U CN 204794959U CN 201520554520 U CN201520554520 U CN 201520554520U CN 204794959 U CN204794959 U CN 204794959U
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- touch key
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- nfc antenna
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Abstract
The utility model relates to a touching device with NFC antenna, including printed circuit board, set up last NFC antenna and the touch button of printed circuit board, touch button's circumference surface is provided with the recess. Touching device with NFC antenna, NFC antenna and touch button set up on same printed circuit board, touch button's circumference surface is provided with the recess, and the recess that touch button circumference surface set up has cut off touch button circumference current vortex on the surface to the electromagnetic field of avoiding the NFC antenna to produce produces the current vortex and produces induced electromotive force on touch button, reduce the influence to touch button sensitivity.
Description
Technical field
The utility model relates to the short distance wireless communication technology field, particularly relates to a kind of touching device with NFC antenna.
Background technology
Capacitance type touch key is widely used in sound equipment panel, telephone set supervisory keyboard, instrument and meter control panel, washer control panel, intelligent access control system control panel, various small household appliances (electromagnetic oven, disinfection cabinet, microwave oven ...), has covered nearly all application relating to control button operation panel such as household electrical appliance, handheld device, Industry Control, automotive electronics, military use product.NFC (NearFieldCommunication, near field communication (NFC)) is a kind of non contact angle measurement and interconnection technique, can carry out wireless near field communication at mobile device, consumer electronics product, PC and smart control Tool Room.NFC provides a kind of solution of simple, touch, can allow consumer's simple, intuitive ground exchange message, access content and service.Contactless card reader, non-contact card and point-to-point (Peer-to-Peer) Function Integration Mechanism are entered one piece of single-chip by NFC, and the life style for consumer has started countless brand-new opportunity.
But, when adding capacitance type touch key and NFC module in the electronic device simultaneously, often because the electromagnetic signal between two modules interferes with each other, the electromagnetic induction signal of the metal touching key especially on capacitance type touch key is to the shielding action of NFC antenna signal, these two modules are made to have to separated, thus the expensive real estate occupied in equipment, increase the volume of product.
Utility model content
Based on this, be necessary the problem interfered with each other for capacitance type touch key and NFC module, a kind of touching device with NFC antenna is provided.
Have a touching device for NFC antenna, comprise printed circuit board (PCB), arrange NFC antenna on the printed circuit board and touch key-press, the circumferential surface of described touch key-press is provided with groove.
The described touching device with NFC antenna, NFC antenna and touch key-press are arranged on same printed circuit board (PCB), the circumferential surface of described touch key-press is provided with groove, the groove that touch key-press circumferential surface is arranged has cut off the current vortex on touch key-press circumferential surface, thus the electromagnetic field avoiding NFC antenna to produce produces current vortex and produces induced electromotive force on touch key-press, reduce the impact on touch key-press sensitivity.
Wherein in an embodiment, described NFC antenna is arranged on the side of described printed circuit board (PCB), and described touch key-press is arranged on the opposite side of described printed circuit board (PCB).
Wherein in an embodiment, described printed circuit board (PCB) is doubling plate or multi-layer sheet.
NFC antenna and touch key-press are separately positioned on the both sides of printed circuit board (PCB), or printed circuit board (PCB) adopts doubling plate or Multilayer Structure, and NFC antenna and touch key-press locus is not on the printed circuit board interfere with each other.
Wherein in an embodiment, described touch key-press is " E " font.
The circumferential surface of touch key-press the same side is provided with " E " character form structure of two grooves, cut off the current vortex on touch key-press circumferential surface, thus the electromagnetic field avoiding NFC antenna to produce produces current vortex and produces induced electromotive force on touch key-press, reduce the impact on touch key-press sensitivity.
Wherein in an embodiment, also comprise dielectric, cover described touch key-press surface.
Wherein in an embodiment, described dielectric thickness is for being less than or equal to 10 millimeters.
At touch key-press surface coverage dielectric, avoid touch key-press and expose the situation getting rusty easily in atmosphere, be corroded, extend the useful life of touch key-press; And the dielectric being less than or equal to 10 mm of thickness is while reaching above-mentioned effect, ensure that touch key-press receives the effect of touch signal data.
Wherein in an embodiment, the quantity of described touch key-press is at least two, and all touch key-presss are arranged side by side and are arranged on described printed circuit board (PCB) side.
Comprise at least two touch key-presss, all touch key-presss are arranged side by side and are arranged on described printed circuit board (PCB) side, make touch key-press be evenly distributed in touching induction region, avoiding position corresponding to touching induction region does not have touch sensible button to receive the situation of touch sensible data.
Wherein in an embodiment, the distance between two adjacent touch key-presss is 3 millimeters to 8 millimeters.
Wherein in an embodiment, the length of each touch key-press is 5 millimeters to 10 millimeters, and width is 5 millimeters to 10 millimeters.
The spacing distance of adjacent touch key-press 3 millimeters to 8 millimeters, and the length of each touch key-press 5 millimeters to 10 millimeters and the width of 5 millimeters to 10 millimeters, ensure that the signal of NFC antenna is effectively through touching induction region.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model has a touching device embodiment of NFC antenna;
Fig. 2 is the structural representation that the utility model has the touch key-press of a touching device embodiment of NFC antenna.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to the utility model in Fig. 1 to there is the utility model in the structural representation of a touching device embodiment of NFC antenna and Fig. 2 there is the structural representation of the touch key-press of a touching device embodiment of NFC antenna.
Have a touching device for NFC antenna, comprise printed circuit board (PCB) 102, be arranged on the NFC antenna 101 on described printed circuit board (PCB) 102 and touch key-press 103, the circumferential surface of described touch key-press 103 is provided with groove 202.
The described touching device with NFC antenna, NFC antenna 101 and touch key-press 103 are arranged on same printed circuit board (PCB) 102, the circumferential surface of described touch key-press 103 is provided with groove 202, the groove 202 that touch key-press 103 circumferential surface is arranged has cut off the current vortex on touch key-press 103 circumferential surface, thus the electromagnetic field avoiding NFC antenna 101 to produce produces current vortex and produces induced electromotive force on touch key-press 103, reduces the impact on touch key-press 103 sensitivity.
Move in magnetic field, or conductor is static but have time dependent magnetic field, or two kinds of situations occur simultaneously, the relative cutting of the magnetic line of force and conductor can be caused, according to the law of electromagnetic induction, just produce induced electromotive force in the conductor, thus drive current, the electric current caused like this distribution is in the conductor different along with the surface configuration of conductor and the distribution in magnetic field, and its path is often just like the whirlpool in water, therefore be called current vortex, be also called for short eddy current.
Such as, coil outside a conductor, and allow coil pass into alternating current, so coil just produces alternating magnetic field, because the conductor in the middle of coil is equivalence can become the closed circuit of a circle circle in circumferential surface direction, magnetic flux in closed circuit is constantly changing, so induced electromotive force and induced current can be produced in the circumferential surface direction of conductor, sense of current flows along the circumferential surface direction of conductor, just as the whirlpool of a circle circle, so just occur thisly producing faradic vortex phenomenon at monoblock conductor generation electromagnetic induction.The outer perimeter of conductor is longer, and the frequency of alternating magnetic field is higher, and eddy current is larger; The eddy current of conductor also can produce heat, if the resistivity of conductor is little, then eddy current is very strong, and the heat of generation is just very large.
In the present embodiment, the circumferential surface of described touch key-press 103 is provided with groove 202, when NFC antenna 101 is at mobile device, consumer electronics product, when PC and smart control Tool Room carry out wireless near field communication, produce the magnetic field of alternation, the magnetic field of alternation is by causing the relative cutting of the magnetic line of force and metallic conductor during metal touching key 103 on printed circuit board (PCB) 102, thus produce induced electromotive force at the circumferential surface of touch key-press 103, thus drive induced current circumferentially surface direction flowing in touch key-press 103, and the induced current of circumferentially surface direction flowing in touch key-press 103 has been cut off at the groove 202 that the circumferential surface of touch key-press 103 is arranged, thus the electromagnetic field avoiding NFC antenna to produce produces current vortex and produces induced electromotive force on touch key-press, reduce the impact on touch key-press sensitivity.
Wherein in an embodiment, described NFC antenna is arranged on the side of described printed circuit board (PCB), and described touch key-press is arranged on the opposite side of described printed circuit board (PCB).
Wherein in an embodiment, described printed circuit board (PCB) is doubling plate or multi-layer sheet.
NFC antenna and touch key-press are separately positioned on the both sides of printed circuit board (PCB), and NFC antenna and touch key-press locus is not on the printed circuit board interfere with each other; Doubling plate or multiple-plate printed circuit board (PCB), make the wiring of NFC antenna and touch key-press can be more reasonable.
Wherein in an embodiment, described touch key-press is " E " font.
As shown in Figure 2, preferably, described touch key-press 103 is " E " font, and the circumferential surface of touch key-press 103 the same side is provided with two grooves 202.If the circumferential surface of touch key-press 103 only have a groove 202 or not homonymy circumferential surface all only have a groove 202, then when induced current in touch key-press 103, circumferentially turn-take by surface direction, be easy to walk around groove 202 along groove 202 edge, thus the current vortex on touch key-press circumferential surface cannot be cut off to a greater degree; And if there is plural groove 202 the same side of touch key-press 103, although cut off eddy current loop, but can increase position corresponding to touching induction region does not have touch key-press 103 to receive the situation of touch sensible data, cause weakening the effect that touch key-press 103 receives touch signal data.But, the circumferential surface of preferred employing touch key-press 103 the same side is provided with " E " character form structure of two grooves 202, cut off the current vortex on touch key-press 103 circumferential surface, thus the electromagnetic field avoiding NFC antenna 101 to produce produces current vortex and produces induced electromotive force on touch key-press 103, reduces the impact on touch key-press sensitivity.
Wherein in an embodiment, also comprise dielectric, cover described touch key-press surface.
Wherein in an embodiment, described dielectric thickness is for being less than or equal to 10 millimeters.
As shown in Figure 1, cover the dielectric 104 on described touch key-press 103 surface, avoid touch key-press 103 and expose the situation getting rusty easily in atmosphere, be corroded, extend the useful life of touch key-press 103; And described dielectric is less than or equal to the thickness of 10 millimeters, ensure that touch key-press 103 receives the effect of touch signal data.
Wherein in an embodiment, the quantity of described touch key-press is at least two, and all touch key-presss are arranged side by side and are arranged on described printed circuit board (PCB) side.
The quantity of described touch key-press is at least two, all touch key-presss are arranged side by side and are arranged on described printed circuit board (PCB) side, make touch key-press be evenly distributed in touching induction region, avoiding position corresponding to touching induction region does not have touch sensible button to receive the situation of touch sensible data.
Wherein in an embodiment, the distance between two adjacent touch key-presss is 3 millimeters to 8 millimeters.
Wherein in an embodiment, the length of each touch key-press is 5 millimeters to 10 millimeters, and width is 5 millimeters to 10 millimeters.
The size of touch key-press length and width determines the size of touch key-press region area, the sensitivity that each touch key-press length is multiplied by the larger then touch sensible of wide area is better, but general finger touches in use procedure, when the area of each touch key-press is greater than the touch area of finger, the part being greater than finger touch area touches effect without help to improvement, and described touch key-press area too conference reduce the gap that NFC antenna signal passes, affect the performance of NFC antenna module.Therefore, adjacent touch key-press arranges the spacing distance of 3 millimeters to 8 millimeters, and each touch key-press arranges the length of 5 millimeters to 10 millimeters and the width of 5 millimeters to 10 millimeters.And the general touch area length of each finger be 9 millimeters, width is 7 millimeters, therefore, preferably, the length of each touch key-press is 9 millimeters, width is 7 millimeters.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (9)
1. have a touching device for NFC antenna, comprise printed circuit board (PCB), arrange NFC antenna on the printed circuit board and touch key-press, it is characterized in that, the circumferential surface of described touch key-press is provided with groove.
2. touching device according to claim 1, is characterized in that, described NFC antenna is arranged on the side of described printed circuit board (PCB), and described touch key-press is arranged on the opposite side of described printed circuit board (PCB).
3. touching device according to claim 1, is characterized in that, described printed circuit board (PCB) is doubling plate or multi-layer sheet.
4. touching device according to claim 1, is characterized in that, described touch key-press is " E " font.
5. the touching device according to Claims 1-4 any one, is characterized in that, also comprises dielectric, and described dielectric covers described touch key-press surface.
6. touching device according to claim 5, is characterized in that, described dielectric thickness is for being less than or equal to 10 millimeters.
7. the touching device according to Claims 1-4 any one, is characterized in that, the quantity of described touch key-press is at least two, and all touch key-presss are arranged side by side and are arranged on described printed circuit board (PCB) side.
8. touching device according to claim 7, is characterized in that, the distance between two adjacent touch key-presss is 3 millimeters to 8 millimeters.
9. touching device according to claim 7, is characterized in that, the length of each touch key-press is 5 millimeters to 10 millimeters, and width is 5 millimeters to 10 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554520.7U CN204794959U (en) | 2015-07-27 | 2015-07-27 | Touching device with NFC antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520554520.7U CN204794959U (en) | 2015-07-27 | 2015-07-27 | Touching device with NFC antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204794959U true CN204794959U (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520554520.7U Active CN204794959U (en) | 2015-07-27 | 2015-07-27 | Touching device with NFC antenna |
Country Status (1)
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| CN (1) | CN204794959U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109035526A (en) * | 2018-08-08 | 2018-12-18 | 曹汉添 | Door lock card reading and touch key-press information controlling mechanism |
| CN116306725A (en) * | 2023-05-23 | 2023-06-23 | 深圳贝特莱电子科技股份有限公司 | Double-layer touch pad and NFC function control method thereof |
-
2015
- 2015-07-27 CN CN201520554520.7U patent/CN204794959U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109035526A (en) * | 2018-08-08 | 2018-12-18 | 曹汉添 | Door lock card reading and touch key-press information controlling mechanism |
| CN116306725A (en) * | 2023-05-23 | 2023-06-23 | 深圳贝特莱电子科技股份有限公司 | Double-layer touch pad and NFC function control method thereof |
| CN116306725B (en) * | 2023-05-23 | 2023-09-15 | 深圳贝特莱电子科技股份有限公司 | Double-layer touch pad and NFC function control method thereof |
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