NFC antenna structure

Abstract

The utility model discloses an NFC antenna structure comprising a PVC layer and an enamelled wire structure connected with the PVC layer, the enamelled wire structure is an annular structure, two ends of the enamelled wire structure extend out of one side of the annular structure, the NFC antenna structure also comprises ferrite and a double-sided adhesive layer, the PVC layer is bonded with one side of the double-sided adhesive layer, the enamelled wire structure is located between the PVC layer and the double-sided adhesive layer, and the two ends of the enamelled wire structure extend out of one side of the annular structure. The ferrite is located on the side, away from the double-faced adhesive tape layer, of the PVC layer, connecting contacts are arranged on the FPC single-layer board, the extending ends of the two ends of the enameled wire structure are connected with the connecting contacts, so that the enameled wire structure forms a loop, compared with an enameled wire winding technology, the antenna structure is more stable in shape and not prone to deformation, and the service life of the antenna structure is prolonged. Meanwhile, the flexible characteristic of the FPC can be achieved, and compared with a connection mode of a mainboard, tinning welding is more stable, firmer and more convenient.

Description

Technical Field

[0001] The utility model relates to the field of NFC antenna structures, in particular to an NFC antenna structure. Background Art

[0002] There are generally two ways to use inductive antennas in the prior art. One is to use enameled wire for winding, but the enameled wire is prone to structural deformation due to lack of support, and the client assembly is cumbersome and the labor cost is high. The other is to use FPC copper foil circuits to form circuit patterns by corroding the copper foil, which will waste a lot of copper foil, is too expensive, has a complicated process, and pollutes the environment. Based on this idea, the enameled wire was ultrasonically implanted into PVC and then combined with FPC. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a stable and non-deformable NFC antenna structure.

[0004] The utility model solves the technical problem by adopting the following technical solution: an NFC antenna structure, comprising a PVC layer and an enameled wire structure connected to the PVC layer, the enameled wire structure being an annular structure, the two ends of the enameled wire structure extending out of one side of the annular structure, further comprising a ferrite and a double-sided adhesive layer, the PVC layer being bonded to one side of the double-sided adhesive layer, the enameled wire structure being located between the PVC layer and the double-sided adhesive layer, the ferrite being located on the side of the PVC layer away from the double-sided adhesive layer, further comprising an FPC single-layer board, the FPC single-layer board being provided with connection contacts, the two ends of the enameled wire structure extending outward are connected to the connection contacts, so that the enameled wire structure forms a loop.

[0005] Furthermore, the enameled wire structure is embedded in the PVC layer by ultrasonic implantation.

[0006] Furthermore, the double-sided adhesive layer is provided with perforations at both ends of the enameled wire structure, and both ends of the enameled wire structure pass through the perforations to be connected to contacts on the FPC single-layer board.

[0007] Furthermore, the ferrite and the PVC layer are connected by adhesive.

[0008] Furthermore, a plurality of mounting holes are correspondingly arranged on the PVC layer, the ferrite and the double-sided adhesive layer;

[0009] The PVC layer, the ferrite and the double-sided adhesive layer are provided with avoidance grooves correspondingly.

[0010] The beneficial effects of the utility model are:

[0011] 1. Compared with the pure FPC process, this antenna structure has the advantages of cost saving, simple process and environmental protection;

[0012] 2. Compared with the enameled wire winding process, this antenna structure is more stable and not easy to deform. At the same time, it can have the soft characteristics of FPC, and compared with the connection method of the mainboard, tinning welding is more stable, reliable and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of an NFC antenna structure according to an embodiment of the present application.

[0014] Markings in the figure are: PVC layer 1, enameled wire structure 2, ferrite 3, double-sided adhesive layer 4, FPC single-layer board 5, connecting contact 6, through hole 7, mounting hole 8, avoidance groove 9. DETAILED DESCRIPTION

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0016] like Figure 1 As shown, an embodiment of the present application discloses an NFC antenna structure, including a PVC layer 1 and an enameled wire structure 2 connected to the PVC layer 1, wherein the enameled wire structure 2 is an annular structure, and both ends of the enameled wire structure 2 extend out of one side of the annular structure, and further include a ferrite 3 and a double-sided adhesive layer 4, wherein the PVC layer 1 is bonded to one side of the double-sided adhesive layer 4, and the enameled wire structure 2 is located between the PVC layer 1 and the double-sided adhesive layer 4, and the ferrite 3 is located on the side of the PVC layer 1 away from the double-sided adhesive layer 4, and further include an FPC single-layer board 5, wherein the FPC single-layer board 5 is provided with connection contacts 6, and the protruding ends of the two ends of the enameled wire structure 2 are connected to the connection contacts 6, so that the enameled wire structure 2 forms a loop.

[0017] Specifically, in this structure, through the design of the PVC layer 1, the enameled wire structure 2 and the FPC single-layer board 5, this structure can be used to protect the processor, IC, and related electronic components of the mobile payment device to prevent bank card theft, etc. At the same time, the PVC layer 1 has the advantages of short processing cycle and low processing cost. At the same time, the structure is also equipped with a ferrite 3 to shield interference and enhance the card swiping function.

[0018] In this embodiment, the enameled wire structure 2 is embedded in the PVC layer 1 by ultrasonic implantation.

[0019] It should be explained that the ultrasonic implantation process is an existing process and the applicant has not improved the process. Therefore, the specific steps of the process will not be repeated here.

[0020] In this structure, the enameled wire structure 2 is embedded in the PVC layer 1 by ultrasonic implantation, so that the enameled wire structure 2 can be firmly connected to the PVC layer 1, thereby ensuring the stability of the enameled wire.

[0021] In this embodiment, the double-sided adhesive layer 4 is provided with through holes 7 at both ends of the enameled wire structure 2 , and both ends of the enameled wire structure 2 pass through the through holes 7 to connect with the contacts on the FPC single-layer board 5 .

[0022] Specifically, it needs to be explained that the FPC single-layer board 5 is located on the side of the double-sided adhesive layer 4 away from the enameled wire structure 2, and the FPC single-layer board 5 is bonded to the side of the double-sided adhesive layer 4 away from the enameled wire structure 2. The setting of the perforation 7 can realize the smooth connection between the enameled wire and the FPC single-layer board 5. At the same time, there is no need to bend the end of the enameled wire, etc., thereby reducing the damage to the end of the enameled wire caused by bending.

[0023] In this embodiment, the ferrite 3 and the PVC layer 1 are connected by adhesive.

[0024] The connection method of the structure is simple to operate and practical, and can not only ensure the stability of the connection between the ferrite 3 and the PVC layer 1, but also play an environmental protection role.

[0025] In this embodiment, a plurality of mounting holes 8 are correspondingly provided on the PVC layer 1, the ferrite 3 and the double-sided adhesive layer 4;

[0026] The PVC layer 1 , the ferrite 3 and the double-sided adhesive layer 4 are provided with avoidance grooves 9 correspondingly.

[0027] Specifically, the setting of the mounting hole 8 in the present structure allows the NFC antenna structure to be fixedly connected to an external IC device such as a POS machine through external fasteners such as bolts, thereby ensuring its connection stability. At the same time, the setting of the avoidance groove 9 allows the NFC antenna structure to avoid other structures in an external IC device such as a POS machine, thereby eliminating the need for bending and other operations during installation.

[0028] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An NFC antenna structure, characterized in that: The invention comprises a PVC layer (1) and an enameled wire structure (2) connected to the PVC layer (1), wherein the enameled wire structure (2) is an annular structure, and the two ends of the enameled wire structure (2) extend out of one side of the annular structure. The invention also comprises a ferrite (3) and a double-sided adhesive layer (4), wherein the PVC layer (1) is bonded to one side of the double-sided adhesive layer (4), the enameled wire structure (2) is located between the PVC layer (1) and the double-sided adhesive layer (4), and the ferrite (3) is located on the side of the PVC layer (1) away from the double-sided adhesive layer (4). The invention also comprises an FPC single-layer board (5), wherein a connection contact (6) is provided on the FPC single-layer board (5), and the two ends of the enameled wire structure (2) extend out of the structure and are connected to the connection contact (6), so that the enameled wire structure (2) forms a loop.

2. The NFC antenna structure according to claim 1, characterized in that: The enameled wire structure (2) is embedded in the PVC layer (1) by ultrasonic implantation.

3. The NFC antenna structure according to claim 1, characterized in that: The double-sided adhesive layer (4) is provided with perforations (7) at both end portions of the enameled wire structure (2), and both end portions of the enameled wire structure (2) pass through the perforations (7) to be connected to contacts on the FPC single-layer board (5).

4. The NFC antenna structure according to claim 1, characterized in that: The ferrite (3) and the PVC layer (1) are connected by adhesive.

5. The NFC antenna structure according to claim 1, characterized in that: A plurality of mounting holes (8) are correspondingly arranged on the PVC layer (1), the ferrite (3) and the double-sided adhesive layer (4); Avoidance grooves (9) are correspondingly arranged on the PVC layer (1), the ferrite (3) and the double-sided adhesive layer (4).

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