NFC antenna

Abstract

The utility model relates to an NFC antenna, which comprises a framework, an antenna coil and a pin assembly, the pin assembly is arranged on the framework, a first pin and a second pin of the pin assembly are arranged at a first end of the framework at intervals, and the antenna coil is wound in a first winding groove on the framework. The two ends of the antenna coil are connected with the first pin and the second pin respectively, the framework can play a supporting role, a framework three-dimensional structure is adopted to replace a planar coil type structure, the NFC antenna can be conveniently assembled on a circuit board, and the assembly efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless communications, and in particular to an NFC antenna. Background Art

[0002] NFC (Near Field Communication) is a short-range, high-frequency radio technology that operates at a frequency of 13.56 MHz within a distance of 20 cm. With the continuous iteration and update of technology, NFC is being used more and more widely in various industries.

[0003] The NFC antenna is one of the key components for achieving NFC communication. Its main function is to transmit NFC signals from the transmitter to the receiver. Existing NFC antennas use a planar coil structure. Due to the strict requirements on the shape and layout of the coil, it requires high precision and meticulous craftsmanship when assembled on the circuit board. Deviations are prone to occur during the assembly process, affecting the performance of the NFC antenna. Utility Model Content

[0004] Based on this, it is necessary to provide an NFC antenna.

[0005] The present invention solves the above-mentioned technical problems with the following technical solutions: an NFC antenna comprising:

[0006] A frame, wherein a first winding groove is formed on an outer surface of the frame;

[0007] an antenna coil, wherein the antenna coil is wound in the first winding slot;

[0008] The pin assembly includes: a first pin and a second pin, the first pin and the second pin are arranged at intervals on the first end of the skeleton, the first pin is connected to the first end of the antenna coil, and the second pin is connected to the second end of the antenna coil.

[0009] In one embodiment, a second winding groove is provided on the outer surface of the skeleton, and the second winding groove is spaced apart from the first winding groove. The antenna coil includes: a first coil segment and a second coil segment, the first coil segment is wound in the first winding groove, and the second coil segment is wound in the second winding groove, the first end of the first coil segment is connected to the first pin, the second end of the first coil segment is connected to the first end of the second coil segment, and the second end of the second coil segment is connected to the second pin.

[0010] In one embodiment, a first limiting groove is formed on the first end of the skeleton, the first limiting groove is connected to the first winding groove, and the first end of the first coil segment passes through the first limiting groove and is connected to the first pin.

[0011] In one embodiment, a first guide groove is provided on the skeleton, the first end of the first guide groove is connected to the first winding groove, the second end of the first guide groove is connected to the second winding groove, and the second end of the first coil segment passes through the first guide groove and is connected to the first end of the second coil segment.

[0012] In one embodiment, a winding column is provided on the second end of the skeleton, and the second end of the second coil segment is connected to the second pin after winding around the winding column.

[0013] In one embodiment, a second guide groove is provided on the skeleton, and the second guide groove is spaced apart from the first guide groove. The second end of the second coil segment is wound around the winding column and passes through the second guide groove and the first guide groove in sequence before being connected to the second pin.

[0014] In one embodiment, a second limiting groove is formed at the bottom of the first limiting groove, and the first end of the first coil segment passes through the second limiting groove and is connected to the first pin.

[0015] In one embodiment, a first positioning groove is spirally formed at the bottom of the first winding groove, and the first coil segment is wound in the first positioning groove.

[0016] In one embodiment, a second positioning groove is spirally opened at the bottom of the second winding groove, and the second coil segment is wound in the second positioning groove.

[0017] In one embodiment, a support column is provided on the second end of the frame.

[0018] The beneficial effects of the present utility model are as follows: an NFC antenna provided by the present utility model is provided with a pin assembly on a skeleton, a first pin and a second pin of the pin assembly are spaced apart and arranged on a first end of the skeleton, an antenna coil is wound in a first winding groove on the skeleton, and two ends of the antenna coil are respectively connected to the first pin and the second pin, the skeleton can play a supporting role, and a three-dimensional skeleton structure is adopted to replace a planar coil structure, so that the NFC antenna is easily assembled on a circuit board, and the assembly efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1This is a schematic structural diagram of an NFC antenna according to an embodiment;

[0021] Figure 2 A schematic diagram of the structure of an NFC antenna according to an embodiment;

[0022] Figure 3 This is a schematic structural diagram of an NFC antenna according to an embodiment;

[0023] Figure 4 This is a schematic structural diagram of an NFC antenna according to an embodiment;

[0024] Figure 5 This is a schematic structural diagram of the skeleton, winding columns and support columns of an embodiment.

[0025] In the accompanying drawings, 10, NFC antenna; 100, skeleton; 110, first winding groove; 120, second winding groove; 130, first limiting groove; 140, first guide groove; 150, second guide groove; 160, second limiting groove; 200, antenna coil; 210, first coil segment; 220, second coil segment; 300, pin assembly; 310, first pin; 320, second pin; 400, winding column; 500, support column. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The following will further describe the technical solution of the present invention in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0027] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc. indicating an orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] In one embodiment, Figure 1As shown, an NFC antenna 10 includes: a skeleton 100, an antenna coil 200, and a pin assembly 300. A first winding groove 110 is defined on the outer surface of the skeleton 100, and the antenna coil 200 is wound in the first winding groove 110. The pin assembly 300 includes: a first pin 310 and a second pin 320. The first pin 310 and the second pin 320 are spaced apart and arranged on the first end of the skeleton 100. The first pin 310 is connected to the first end of the antenna coil 200, and the second pin 320 is connected to the second end of the antenna coil 200.

[0029] In this embodiment, the skeleton 100 is a hollow cylindrical structure, and a pin assembly 300 is provided on the skeleton 100. The first pin 310 and the second pin 320 of the pin assembly 300 are arranged at intervals on the first end of the skeleton 100. The antenna coil 200 is an enameled wire. The antenna coil 200 is wound in the first winding groove 110 on the skeleton 100, and the two ends of the antenna coil 200 are respectively connected to the first pin 310 and the second pin 320. The skeleton 100 can play a supporting role. The three-dimensional structure of the skeleton is used to replace the planar coil structure, which facilitates the assembly of the NFC antenna 10 on the circuit board and has high assembly efficiency.

[0030] In one embodiment, Figure 2 、 Figure 3 and Figure 5 As shown, a second winding groove 120 is provided on the outer surface of the skeleton 100, and the second winding groove 120 is spaced apart from the first winding groove 110. The antenna coil 200 includes: a first coil segment 210 and a second coil segment 220. The first coil segment 210 is wound in the first winding groove 110, and the second coil segment 220 is wound in the second winding groove 120. The first end of the first coil segment 210 is connected to the first pin 310, the second end of the first coil segment 210 is connected to the first end of the second coil segment 220, and the second end of the second coil segment 220 is connected to the second pin 320. Specifically, the second winding groove 120 is spaced apart from the first winding groove 110 in the upper and lower directions. The second winding groove 120 is located above the first winding groove 110. After the first end of the antenna coil 200 is connected to the first pin 310, the antenna coil 200 is sequentially wound in the first winding groove 110 and the second winding groove 120. Finally, the second end of the antenna coil 200 is connected to the second pin 320. That is, the antenna coil 200 is divided into a two-section structure, and the first coil segment 210 and the second coil segment 220 are respectively wound in the first winding groove 110 and the second winding groove 120, which can increase the operating frequency of the NFC antenna 10.

[0031] In one embodiment, Figure 4 and Figure 5As shown, a first limiting groove 130 is defined on the first end of the skeleton 100. The first limiting groove 130 is in communication with the first winding groove 110. The first end of the first coil segment 210 passes through the first limiting groove 130 and is connected to the first pin 310. Specifically, by defining the first limiting groove 130 on the skeleton 100, the position of the first end of the first coil segment 210 on the skeleton 100 can be restricted, thereby ensuring a more stable connection between the first coil segment 210 and the first pin 310.

[0032] In one embodiment, Figure 4 and Figure 5 As shown, the frame 100 is provided with a first guide slot 140. The first end of the first guide slot 140 communicates with the first winding slot 110, and the second end of the first guide slot 140 communicates with the second winding slot 120. The second end of the first coil segment 210 passes through the first guide slot 140 and is connected to the first end of the second coil segment 220. Specifically, the first winding slot 110 communicates with the second winding slot 120 through the first guide slot 140. After being wound in the first winding slot 110, the antenna coil 200 can pass through the first guide slot 140 and enter the second winding slot 120 for winding. The first guide slot 140 limits the position of the second end of the first coil segment 210 on the frame 100, which not only facilitates the winding of the second coil segment 220 of the antenna coil 200 in the second winding slot 120, but also ensures that the first coil segment 210 of the antenna coil 200 is tightly wound in the first winding slot 110, thereby preventing it from loosening.

[0033] In one embodiment, Figure 2 and Figure 4 As shown, a winding post 400 is provided on the second end of the bobbin 100. The second end of the second coil segment 220 is wound around the winding post 400 and then connected to the second pin 320. Specifically, the antenna coil 200 is wound around the second winding groove 120 and then around the winding post 400. This allows the second coil segment 220 of the antenna coil 200 to be tightly wound within the second winding groove 120, thereby preventing it from loosening.

[0034] In one embodiment, Figure 2 and Figure 4As shown, the frame 100 is provided with a second guide slot 150, spaced apart from the first guide slot 140. The second end of the second coil segment 220 is wound around the winding post 400 and sequentially passes through the second guide slot 150 and the first guide slot 140 before being connected to the second pin 320. Specifically, the second winding slot 120 communicates with the first winding slot 110 via the second guide slot 150. After the antenna coil 200 is wound around the winding post 400, it is sequentially positioned within the second guide slot 150 and the first guide slot 140. This restricts the position of the second end of the second coil segment 220 on the frame 100, ensuring a stable connection with the second pin 320.

[0035] In one embodiment, Figure 2 and Figure 4 As shown, a second limiting groove 160 is defined at the bottom of the first limiting groove 130, and the first end of the first coil segment 210 passes through the second limiting groove 160 and is connected to the first pin 310. Specifically, by defining the second limiting groove 160 at the bottom of the first limiting groove 130, and the width of the second limiting groove 160 being smaller than the width of the first limiting groove 130, the first end of the first coil segment 210 is positioned within the second limiting groove 160, and the second end of the second coil segment 220 is positioned within the first limiting groove 130. This allows the first end of the first coil segment 210 and the second end of the second coil segment 220 to be spaced apart from each other, allowing the antenna coil 200 to be wound around the frame 100 in an orderly manner.

[0036] In one embodiment, a first positioning groove is spirally formed at the bottom of the first winding groove 110, and the first coil segment 210 is wound within the first positioning groove. Specifically, the first positioning groove is spirally formed at the bottom of the first winding groove 110, and the first coil segment 210 is located within the first positioning groove, which can limit the position of the first coil segment 210 within the first winding groove 110 and play a positioning role, allowing the first coil segment 210 to be wound in the first winding groove 110 in an orderly and stable manner.

[0037] In one embodiment, a second positioning groove is spirally formed at the bottom of the second winding groove 120, and the second coil segment 220 is wound within the second positioning groove. Specifically, the second positioning groove is spirally formed at the bottom of the second winding groove 120, and the second coil segment 220 is located within the second positioning groove, which can limit the position of the second coil segment 220 within the second winding groove 120 and serve as a positioning function, allowing the second coil segment 220 to be wound in the second winding groove 120 in an orderly and stable manner.

[0038] In one embodiment, Figure 4 and Figure 5As shown, a support column 500 is provided on the second end of the frame 100. Specifically, the number of support columns 500 is set to two or more, and each support column 500, the first pin 310, and the second pin 320 are evenly distributed on the second end of the frame 100, which can make the frame 100 more stably assembled on the circuit board, and thus the NFC antenna 10 can be more stably assembled on the circuit board.

[0039] Compared with the prior art, the present invention has at least the following advantages:

[0040] The utility model provides an NFC antenna, in which a pin assembly is provided on a skeleton, a first pin and a second pin of the pin assembly are spaced apart and arranged on a first end of the skeleton, an antenna coil is wound in a first winding groove on the skeleton, and two ends of the antenna coil are respectively connected to the first pin and the second pin. The skeleton can play a supporting role, and a three-dimensional skeleton structure is adopted to replace a planar coil structure, so that the NFC antenna is easily assembled on a circuit board, and the assembly efficiency is high.

[0041] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An NFC antenna, characterized in that: include: A frame, wherein a first winding groove is formed on an outer surface of the frame; an antenna coil, wherein the antenna coil is wound in the first winding groove; A pin assembly, the pin assembly comprising: a first pin and a second pin, the first pin and the second pin are arranged at an interval on the first end of the skeleton, the first pin is connected to the first end of the antenna coil, and the second pin is connected to the second end of the antenna coil.

2. The NFC antenna according to claim 1, characterized in that: A second winding groove is provided on the outer surface of the skeleton, and the second winding groove is spaced apart from the first winding groove. The antenna coil comprises: a first coil segment and a second coil segment, the first coil segment is wound in the first winding groove, the second coil segment is wound in the second winding groove, the first end of the first coil segment is connected to the first pin, the second end of the first coil segment is connected to the first end of the second coil segment, and the second end of the second coil segment is connected to the second pin.

3. The NFC antenna according to claim 2, characterized in that: A first limiting groove is formed on the first end of the frame, the first limiting groove is connected to the first winding groove, and the first end of the first coil segment passes through the first limiting groove and is connected to the first pin.

4. The NFC antenna according to claim 3, characterized in that: The frame is provided with a first guide groove, a first end of the first guide groove is connected to the first winding groove, a second end of the first guide groove is connected to the second winding groove, and a second end of the first coil segment passes through the first guide groove and is connected to the first end of the second coil segment.

5. The NFC antenna according to claim 4, characterized in that: A winding column is arranged on the second end of the frame, and the second end of the second coil segment is connected to the second pin after winding around the winding column.

6. The NFC antenna according to claim 5, characterized in that: The frame is provided with a second guide groove, which is spaced apart from the first guide groove. The second end of the second coil segment is connected to the second pin after winding around the winding column and passing through the second guide groove and the first guide groove in sequence.

7. The NFC antenna according to claim 6, characterized in that: A second limiting groove is formed at the bottom of the first limiting groove, and the first end of the first coil segment passes through the second limiting groove and is connected to the first pin.

8. The NFC antenna according to claim 2, characterized in that: A first positioning groove is spirally formed at the bottom of the first winding groove, and the first coil segment is wound in the first positioning groove.

9. The NFC antenna according to claim 8, characterized in that: A second positioning groove is spirally formed at the bottom of the second winding groove, and the second coil segment is wound in the second positioning groove.

10. The NFC antenna according to any one of claims 1 to 9, characterized in that: A support column is arranged on the second end of the frame.

Images