CN217768773U

CN217768773U - NFC communication antenna stack structure and POS machine

Info

Publication number: CN217768773U
Application number: CN202221953795.4U
Authority: CN
Inventors: 刘杰; 周暖; 郭志辉; 秦星; 汤冬勇
Original assignee: Shenzhen Hezongfu Technology Co ltd
Current assignee: Shenzhen Hezongfu Technology Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2022-11-08
Anticipated expiration: 2032-07-27

Abstract

The utility model provides a NFC communication antenna stacked structure and POS machine, include: the screen assembly comprises a display screen and a medium sheet capable of penetrating electromagnetic waves, wherein the medium sheet capable of penetrating electromagnetic waves is attached to one side of the display screen; the antenna body is positioned on one side of the screen component and is arranged close to the dielectric sheet capable of penetrating the electromagnetic waves, the antenna body comprises a plurality of connected frame edges, and each frame edge is arranged on one side perpendicular to the projection direction of the screen component; the PCB is positioned on the lower side of the antenna body, the PCB is connected with the connecting contact on the antenna body, and the screen assembly is electrically connected with the PCB. The utility model is used for solve the electromagnetic field decay problem that the screen metal sheet leads to among the prior art, reduce the product volume.

Description

NFC communication antenna stack structure and POS machine

Technical Field

The utility model relates to a NFC communication technology field, concretely relates to NFC communication antenna stacked structure and POS machine.

Background

The NFC non-contact communication belongs to the near field communication technology, and is realized by the inductive coupling effect of two coils, the NFC non-contact output electromagnetic field intensity and the waveform of which are within the range of 0 cm-4 cm both meet the technical specification requirements of the EMV standard. Because when the product is designed, parts such as a PCB (printed circuit board), a display screen and a metal block exist at the periphery of the NFC non-contact antenna, the parts can influence the NFC non-contact communication electromagnetic field intensity, and can attenuate the electromagnetic field intensity to a certain extent, so that a 'clearance' needs to be reserved for the antenna.

Because a metal sheet can be installed to the display screen back and play the effect of support and heat dissipation, if be located the metal sheet rear with each limit of antenna completely, the electromagnetic field of its transmission can receive the shielding, consequently current NFC communication antenna structure piles up the design and all exists (setting in the display screen outside) as an independent individual with the antenna, or wholly encircles the display screen. When the antenna is in an independent individual existence, the requirement on the structural design of the product is greatly improved due to the fact that the clearance around the antenna environment is needed, the design difficulty of the product is increased, and the product volume is large. When the antenna is arranged around the screen, the coil is relatively large, so that the communication signal is difficult to meet the technical specification requirement of the EMV standard, and the metal plate behind the screen can attenuate the output electromagnetic field of the antenna.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a NFC communication antenna stacked structure and POS machine can solve the electromagnetic field decay problem that the screen metal sheet leads to among the prior art, reduces the product volume.

The technical scheme of the utility model is realized like this:

an NFC communications antenna stack comprising: the screen assembly comprises a display screen and a medium sheet capable of penetrating electromagnetic waves, wherein the medium sheet capable of penetrating electromagnetic waves is attached to one side of the display screen; the antenna body is positioned on one side of the screen component and is arranged close to the dielectric sheet capable of penetrating the electromagnetic waves, the antenna body comprises a plurality of connected frame edges, and each frame edge is positioned in the projection direction of the screen component; the PCB is positioned on the lower side of the antenna body, the PCB is connected with the connecting contact on the antenna body, and the screen assembly is electrically connected with the PCB.

Preferably, still include the display screen support, the display screen support sets up between antenna body and the PCB board, so that the interval sets up between screen pack and the PCB board, the antenna body is fixed to be set up display screen support one side, be equipped with a plurality of through-holes on the display screen support.

Preferably, the screen assembly is provided with a flat cable, and the flat cable penetrates through the through hole to be connected with the screen assembly and the PCB.

Preferably, the antenna body further comprises an integrally formed connecting sheet, the connecting sheet is arranged on one side of the antenna body in parallel and arranged on the other side of the display screen support departing from the antenna body, and the connecting sheet is provided with the connecting contact.

Preferably, the distance between the connecting sheet and the antenna body is 0.1 cm-0.5 cm.

Preferably, the display screen support perpendicular to the projection direction of the antenna body is provided with a receiving groove to receive the antenna body.

Preferably, a radio frequency chip is embedded on the PCB.

Preferably, the antenna body is configured as one of an FPC board, a PCB board, and a copper wire.

Preferably, the thickness of the medium piece capable of penetrating the electromagnetic waves is between 1mm and 5 mm.

The utility model also provides a POS machine, including above-mentioned arbitrary item NFC communication antenna stacked structure.

Compared with the prior art, the utility model has the advantages of it is following.

The utility model discloses a metal sheet replacement with screen pack is the medium piece of penetrable electromagnetic wave for each frame limit of antenna body can both set up at the screen pack downside, and the electromagnetic of output can not be because the influence of metal sheet, thereby produce and seriously weaken, the utility model discloses reduce the whole volume of product, make antenna structure more frivolous.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a perspective view of a stacked structure of an NFC communication antenna according to the present invention;

fig. 2 is an exploded view of the stacked structure of the NFC communication antenna of the present invention;

FIG. 3 is an elevation view of the screen assembly of the present invention removed;

FIG. 4 is a rear view of the screen assembly of the present invention removed;

fig. 5 is a left side view of the screen assembly of the present invention;

the attached drawings are as follows: 10. a display screen; 11. a dielectric sheet capable of penetrating electromagnetic waves; 12. arranging wires; 20. an antenna body; 21. a frame edge; 22. connecting sheets; 221. connecting the contacts; 40. a display screen support; 41. a through hole; 42. accommodating grooves;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the conventional antenna installation method, each frame 21 of the antenna body 20 does not coincide with the projection direction of the screen assembly.

Referring to fig. 1 to 5, an embodiment of the present invention discloses an NFC communication antenna stack structure, including: the screen assembly comprises a display screen 10 and a dielectric sheet 11 capable of penetrating electromagnetic waves and used for supporting the display screen 10, wherein the dielectric sheet 11 capable of penetrating electromagnetic waves is attached to one side of the display screen 10; the antenna comprises a frame-shaped antenna body 20, wherein the antenna body 20 is positioned on one side of a screen component and is arranged close to a dielectric sheet 11 capable of penetrating electromagnetic waves, the antenna body 20 comprises a plurality of connected frame edges 21, and each frame edge 21 is arranged on one side perpendicular to the projection direction of the screen component; the PCB (not shown) is located at the lower side of the antenna body 20, the PCB is connected with the connecting contact 221 on the antenna body 20, and the screen assembly is electrically connected with the PCB. In the present embodiment, the material of the dielectric sheet 11 capable of penetrating electromagnetic waves is plastic, so that the output electromagnetic waves of the antenna body 20 can penetrate through the screen assembly. The frame shape of the antenna body 20 is not limited to the square shape, and any triangular shape or circular shape that can provide the same electromagnetic wave radiation effect is within the scope of the present embodiment.

As the above preferred embodiment, the antenna body 20 may also be electrically connected to a screen assembly by way of contacts or wires, and the screen assembly is connected to the PCB, so as to control the antenna body 20 by the PCB.

Still include display screen support 40, display screen support 40 sets up between antenna body 20 and PCB board to make the interval set up between screen pack and the PCB board, antenna body 20 is fixed to be set up in display screen support 40 one side, is equipped with a plurality of through-holes 41 on the display screen support 40. The screen assembly, the antenna body 20 and the PCB can be fixed on two sides of the display screen support 40 in a screw fixing, pasting and other modes, so that the positions of all the parts are kept fixed, and the reliability of the structure is ensured.

A flat cable 12 is further provided, and the flat cable 12 passes through the through hole 41 to connect the screen assembly and the PCB. In another embodiment, the screen assembly and the PCB board may be directly connected by wires, electrical contacts or metal members.

In a preferred embodiment, as shown in fig. 4, the antenna body 20 further includes an integrally formed connecting sheet 22, the connecting sheet 22 is disposed in parallel on one side of the antenna body 20 and on the other side of the display screen bracket 40 away from the antenna body 20, and the connecting sheet 22 is provided with a connecting contact 221.

In a preferred embodiment, the distance between the connecting piece 22 and the antenna body 20 is 0.1cm to 0.5cm. So that the connection piece 22 can be connected to the PCB board at the other end through the display bracket 40.

The display screen bracket 40 perpendicular to the projection direction of the antenna body 20 is provided with a receiving groove 42 for receiving the antenna body 20. The depth of the accommodating groove 21 is between 0.1cm and 0.3cm, and the size of the accommodating groove 21 is slightly larger than that of the antenna body 20, the position of the antenna body 20 is limited by the accommodating groove 21, so that the antenna body 20 can be stably fixed on the display screen support 40, the depth of the accommodating groove 21 reserves clearance for the antenna body 20, and the antenna body 20 is ensured to meet the EMV standard.

In a preferred embodiment, a radio frequency chip is embedded on the PCB.

In a preferred embodiment, the antenna body 20 is configured as one of an FPC board, a PCB board, and a copper wire. Further, when the antenna body 20 is configured as a copper wire, the copper wire is disposed in a protective film to ensure that the antenna body 20 does not generate loss and deformation during the assembling process.

The beneficial effect of above-mentioned NFC communication antenna stack structure lies in: the utility model discloses a metal sheet replacement with traditional screen subassembly is the medium piece of penetrable electromagnetic wave for each frame limit of antenna body can set up in screen subassembly's projection scope, and the electromagnetic wave of output can not produce seriously weak, and the radio frequency chip on the collocation PCB board just can realize stronger electromagnetic wave penetrating effect, makes antenna body 20's effective distance meet the standard, has reduced the whole volume of product, makes antenna structure more frivolous.

In a preferred embodiment, the thickness of the electromagnetic wave transparent dielectric sheet 11 is between 1mm and 5 mm. So that the dielectric sheet 11 capable of penetrating electromagnetic waves still can play a better supporting role.

This embodiment also provides a POS machine including the NFC communication antenna stack structure in the above embodiment. Therefore, the POS machine should have all the advantages that the NFC communication antenna stacking structure can bring, and details are not described herein.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An NFC communications antenna stack, comprising:

the screen assembly comprises a display screen (10) and a dielectric sheet (11) capable of penetrating electromagnetic waves, wherein the dielectric sheet (11) capable of penetrating electromagnetic waves is attached to one side of the display screen (10);

the antenna comprises a frame-shaped antenna body (20), wherein the antenna body (20) is positioned on one side of the screen component and is arranged close to the dielectric sheet (11) capable of penetrating the electromagnetic waves, the antenna body (20) comprises a plurality of connected frame edges (21), and each frame edge (21) is positioned in the projection direction of the screen component;

the PCB is positioned on the lower side of the antenna body (20), the PCB is connected with a connecting contact (221) on the antenna body (20), and the screen assembly is electrically connected with the PCB.

2. The NFC communication antenna stack structure of claim 1, further comprising a display screen support (40), wherein the display screen support (40) is disposed between the antenna body (20) and the PCB so that the screen assembly and the PCB are spaced apart from each other, the antenna body (20) is fixedly disposed on one side of the display screen support (40), and a plurality of through holes (41) are disposed on the display screen support (40).

3. The NFC communication antenna stack structure of claim 2, further comprising a flex cable (12), wherein the flex cable (12) passes through the through hole (41) to connect the screen assembly and the PCB.

4. The NFC communication antenna stack structure of claim 1, wherein the antenna body (20) further comprises an integrally formed connection sheet (22), the connection sheet (22) is disposed in parallel on one side of the antenna body (20) and on the other side of the display screen bracket (40) facing away from the antenna body (20), and the connection contact (221) is disposed on the connection sheet (22).

5. The NFC communication antenna stack of claim 4, wherein the connection pad (22) is spaced from the antenna body (20) by 0.1cm to 0.5cm.

6. NFC communication antenna stack according to claim 1, characterized in that a receiving groove (42) is provided on the display screen holder (40) perpendicular to the projection direction of the antenna body (20) to receive the antenna body (20).

7. The NFC communications antenna stack of claim 1, wherein the PCB board has a radio frequency chip embedded thereon.

8. The NFC communication antenna stack of claim 1, wherein the antenna body (20) is configured as one of a FPC board, a PCB board, a copper wire.

9. The NFC communication antenna stack of claim 1, wherein the thickness of the electromagnetic wave transparent dielectric sheet (11) is between 1mm and 5 mm.

10. A POS machine comprising the NFC communications antenna stack of any of claims 1-7.