CN207398362U - NFC device based on wearable device - Google Patents
NFC device based on wearable device Download PDFInfo
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- CN207398362U CN207398362U CN201721261487.4U CN201721261487U CN207398362U CN 207398362 U CN207398362 U CN 207398362U CN 201721261487 U CN201721261487 U CN 201721261487U CN 207398362 U CN207398362 U CN 207398362U
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Abstract
The utility model provides a kind of NFC device based on wearable device, including wearable device rear shell, FPC, ferrite, NFC chip and antenna matching network, wherein：The FPC and ferrite are bonded inside the wearable device rear shell；The FPC includes two feed points, and described two feed points connect one end of the antenna matching network, and the NFC chip connects the other end of the antenna matching network.The utility model is simple in structure, it is convenient for production, occupy little space；NFC device is arranged at the rear shell of wearable device by the utility model, realizes that wearable device positive and negative is respectively provided with NFC performances.
Description
Technical field
The utility model is related to NFC technique fields, and in particular, to a kind of NFC device based on wearable device.
Background technology
With the development of economy with the popularization of wireless payment technology, pass through the wearable device brush public transport with NFC function
Card or shopping have changed into the main way of Future Consumption, have the wearable device of NFC function because its is easy to wear, payment
The reasons such as convenience, form of payment novelty are also increasingly welcome be subject to consumer, in the epoch of e-payment rapid proliferation, NFC
The wearable device of function already plays extremely important role in life.Wearable device generally include wrist-watch, bracelet,
Such equipment such as media player.
Wrist-watch major part wrist-watch NFC antenna designing scheme is all located in below screen at present, and there are no a antennas to set
Meter is that NFC antenna is placed on wrist-watch bottom case, it is therefore necessary to propose a kind of NFC device based on wearable device rear shell,
It can realize that wrist-watch positive and negative all possesses NFC performances, when people, which take wrist-watch, carries out subway or public transport payment, the display of wrist-watch
Face can withhold, and can also withhold below the watchband of wrist-watch, can meet the use habit of different user.
Utility model content
For in the prior art the defects of, the purpose of this utility model be to provide it is a kind of based on wearable device NFC dress
It puts.
According to a kind of NFC device based on wearable device provided by the utility model, including wearable device rear shell,
FPC, ferrite, NFC chip and antenna matching network, wherein：The FPC and ferrite are bonded the wearable device rear shell
It is internal；The FPC includes two feed points, and described two feed points connect one end of the antenna matching network, and the NFC chip connects
Connect the other end of the antenna matching network.
Preferably, the FPC includes FPC surfaces with glue and FPC materials face；The ferrite includes ferrite tape glue surface and iron
Oxysome appearance；The FPC surfaces with glue are affixed on inside the wearable device rear shell；The FPC materials face paste closes the iron oxygen
Body surface with glue.
Preferably, the FPC materials face includes ink material, PET materials or PI materials.
Preferably, the material of the wearable device rear shell is insulating materials.
Preferably, the antenna matching network include inductance L1, inductance L2, capacitance C1, capacitance C2, capacitance C3, capacitance C4,
Capacitance C5 and capacitance C6, wherein：
Inductance L1 is identical with inductance L2；Capacitance C1 and capacitance C2；Capacitance C3 is identical with capacitance C4；Capacitance C5 and capacitance C6
It is identical；
Capacitance C1, capacitance C2, capacitance C4, capacitance C6, capacitance C5 and capacitance C3 series connection forming circuits；
Capacitance C1 and capacitance C2 junctions and capacitance C5 and capacitance C6 junctions ground connection；
Capacitance C3 and capacitance C5 junctions and capacitance C4 and capacitance C6 junctions connect the feed point respectively；
Inductance L1 one end connects capacitance C1 and capacitance C3 junctions；Inductance L2 one end connection capacitance C2 is connected with capacitance C4
Place；Inductance L1 connects the NFC chip with the inductance L2 other ends.
Preferably, the antenna matching network includes inductance L3, inductance L4, capacitance C5, capacitance C6, capacitance C7, capacitance C8
And balun device, wherein：
Inductance L3 is identical with inductance L4；Capacitance C5 is identical with capacitance C6；
Inductance L3, inductance L4, capacitance C5 and capacitance C6 are sequentially connected in series；
Inductance L3 and capacitance C5 junctions and inductance L4 and capacitance C6 junctions connect the two of balun device one end respectively
A interface；
One interfacing ground of the balun device other end, another interface connection capacitance C7 one end, capacitance C7 are another
End connection capacitance C8 one end, capacitance C8 other ends ground connection；
Capacitance C7 connects one feed with capacitance C8 junctions, another feed ground.
Preferably, the wearable device includes smartwatch or Intelligent bracelet.
Compared with prior art, the utility model has following advantageous effect：
1st, the utility model it is simple in structure, it is convenient for production, occupy little space；
2nd, NFC device is arranged at the rear shell of wearable device by the utility model, realizes that wearable device positive and negative has
There are NFC performances.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon：
Fig. 1 is the structure diagram of wearable wrist-watch；
Fig. 2 is the structure diagram of NFC antenna；
Fig. 3 is the first preference of NFC chip and antenna matching network circuit diagram；
Fig. 4 is the second preference of NFC chip and antenna matching network circuit diagram.
It is shown in figure：
Specific embodiment
The utility model is described in detail with reference to specific embodiment.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, several changes and improvements can also be made.
These belong to the scope of protection of the utility model.
In the description of the utility model, it is to be understood that term " on ", " under ", "front", "rear", "left", "right",
The orientation or position relationship of the instructions such as " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on orientation shown in the drawings or
Position relationship is for only for ease of description the utility model and simplifies description rather than instruction or imply signified device or member
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention/utility model
Limitation.
As shown in Figure 1, the utility model is used as embodiment by smartwatch, the smartwatch include wrist-watch screen 1,
Watch cell 2, wrist-watch mainboard 3, NFC antenna 4, wrist-watch connect band 5, wrist-watch rear shell 6, wireless matching network 7 and NFC chip 8,
NFC antenna 4 is affixed on 6 inner surface of wrist-watch rear shell, and the material of wrist-watch rear shell 6 is insulating materials, such as plastic material or FR4 materials
Matter.Wrist-watch connect band 5 is detachably connected 6 both sides of wrist-watch rear shell, and wrist-watch screen 1, watch cell 2 and wrist-watch mainboard 3 are respectively provided with
Above NFC antenna 4.
Specifically, NFC antenna 4 includes FPC401 and ferrite 402, and FPC401 is set around the periphery of ferrite 402,
FPC401 includes two feed points, and described two feed points connect one end of the antenna matching network 7, and the NFC chip 8 connects institute
State the other end of antenna matching network 7.
In more detail, the FPC401 includes FPC surfaces with glue and FPC materials face；The ferrite 402 includes ferrite
Surface with glue and ferrite appearance；The FPC surfaces with glue are affixed on inside the wrist-watch rear shell；Described in the FPC materials face paste is closed
Ferrite tape glue surface.FPC materials face can be ink material, PET materials or PI materials.
Fig. 3 is the first preference of the circuit diagram of NFC chip 8 and antenna matching network 7, as shown in figure 3, antenna match net
Network 7 includes inductance L1, inductance L2, capacitance C1, capacitance C2, capacitance C3, capacitance C4, capacitance C5 and capacitance C6, wherein：Inductance L1
It is identical with inductance L2；Capacitance C1 and capacitance C2；Capacitance C3 is identical with capacitance C4；Capacitance C5 and capacitance C6 are identical；Capacitance C1, electricity
Hold C2, capacitance C4, capacitance C6, capacitance C5 and capacitance C3 series connection forming circuits；Capacitance C1 and capacitance C2 junctions and capacitance
C5 and capacitance C6 junctions ground connection；Capacitance C3 and capacitance C5 junctions and capacitance C4 and capacitance C6 junctions connect described respectively
Feed point；Inductance L1 one end connects capacitance C1 and capacitance C3 junctions；Inductance L2 one end connects capacitance C2 and capacitance C4 junctions；Electricity
Sense L1 connects the NFC chip with the inductance L2 other ends.
Fig. 4 is the second preference of the circuit diagram of NFC chip 8 and antenna matching network 7, as shown in figure 4, the antenna
Distribution network includes inductance L3, inductance L4, capacitance C5, capacitance C6, capacitance C7, capacitance C8 and balun device 9, wherein：Inductance L3
It is identical with inductance L4；Capacitance C5 is identical with capacitance C6；Inductance L3, inductance L4, capacitance C5 and capacitance C6 are sequentially connected in series；Inductance L3
Connect two interfaces of 9 one end of balun device respectively with capacitance C5 junctions and inductance L4 and capacitance C6 junctions；Described bar
One interfacing ground of 9 other end of human relations device, another interface connection capacitance C7 one end, capacitance C7 other ends connection capacitance C8 mono-
End, capacitance C8 other ends ground connection；Capacitance C7 connects one feed with capacitance C8 junctions, another feed ground.
It further illustrates, wearable device can also be Intelligent bracelet or media player.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims,
This has no effect on the substantive content of the utility model.In the case where there is no conflict, the spy in embodiments herein and embodiment
Sign can be arbitrarily mutually combined.
Claims (7)
1. a kind of NFC device based on wearable device, which is characterized in that including wearable device rear shell, FPC, ferrite,
NFC chip and antenna matching network, wherein：The FPC and ferrite are bonded inside the wearable device rear shell；It is described
FPC includes two feed points, and described two feed points connect one end of the antenna matching network, and the NFC chip connects the day
The other end of lines matching network.
2. the NFC device according to claim 1 based on wearable device, which is characterized in that the FPC includes FPC bands
Glue surface and FPC materials face；The ferrite includes ferrite tape glue surface and ferrite appearance；The FPC surfaces with glue are affixed on institute
It states inside wearable device rear shell；The FPC materials face paste closes the ferrite tape glue surface.
3. the NFC device according to claim 2 based on wearable device, which is characterized in that the FPC materials face includes
Ink material, PET materials or PI materials.
4. the NFC device according to claim 1 based on wearable device, which is characterized in that after the wearable device
The material of shell is insulating materials.
5. the NFC device according to claim 1 based on wearable device, which is characterized in that
The antenna matching network include inductance L1, inductance L2, capacitance C1, capacitance C2, capacitance C3, capacitance C4, capacitance C5 and
Capacitance C6, wherein：
Inductance L1 is identical with inductance L2；Capacitance C1 and capacitance C2；Capacitance C3 is identical with capacitance C4；Capacitance C5 and capacitance C6 phases
Together；
Capacitance C1, capacitance C2, capacitance C4, capacitance C6, capacitance C5 and capacitance C3 series connection forming circuits；
Capacitance C1 and capacitance C2 junctions and capacitance C5 and capacitance C6 junctions ground connection；
Capacitance C3 and capacitance C5 junctions and capacitance C4 and capacitance C6 junctions connect the feed point respectively；
Inductance L1 one end connects capacitance C1 and capacitance C3 junctions；Inductance L2 one end connects capacitance C2 and capacitance C4 junctions；Electricity
Sense L1 connects the NFC chip with the inductance L2 other ends.
6. the NFC device according to claim 1 based on wearable device, which is characterized in that
The antenna matching network includes inductance L3, inductance L4, capacitance C5, capacitance C6, capacitance C7, capacitance C8 and barron device
Part, wherein：
Inductance L3 is identical with inductance L4；Capacitance C5 is identical with capacitance C6；
Inductance L3, inductance L4, capacitance C5 and capacitance C6 are sequentially connected in series；
Inductance L3 and capacitance C5 junctions and inductance L4 and capacitance C6 junctions connect balun device one end respectively two connect
Mouthful；
One interfacing ground of the balun device other end, another interface connection capacitance C7 one end, the capacitance C7 other ends connect
Connect capacitance C8 one end, capacitance C8 other ends ground connection；
Capacitance C7 connects one feed point with capacitance C8 junctions, another feed point ground connection.
7. the NFC device according to claim 1 based on wearable device, which is characterized in that the wearable device bag
Include smartwatch or Intelligent bracelet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721261487.4U CN207398362U (en) | 2017-09-28 | 2017-09-28 | NFC device based on wearable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721261487.4U CN207398362U (en) | 2017-09-28 | 2017-09-28 | NFC device based on wearable device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207398362U true CN207398362U (en) | 2018-05-22 |
Family
ID=62330421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721261487.4U Active CN207398362U (en) | 2017-09-28 | 2017-09-28 | NFC device based on wearable device |
Country Status (1)
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| CN (1) | CN207398362U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638434A (en) * | 2018-11-23 | 2019-04-16 | 深圳市天威讯无线技术有限公司 | A kind of NFC antenna and Intelligent bracelet of Intelligent bracelet |
| CN112611920A (en) * | 2020-12-03 | 2021-04-06 | 深圳市卓睿通信技术有限公司 | Ferrite consistency detection jig and detection method |
-
2017
- 2017-09-28 CN CN201721261487.4U patent/CN207398362U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638434A (en) * | 2018-11-23 | 2019-04-16 | 深圳市天威讯无线技术有限公司 | A kind of NFC antenna and Intelligent bracelet of Intelligent bracelet |
| CN112611920A (en) * | 2020-12-03 | 2021-04-06 | 深圳市卓睿通信技术有限公司 | Ferrite consistency detection jig and detection method |
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