Under-screen NFC antenna mounting structure

Abstract

The utility model provides an under-screen NFC antenna installation structure, and relates to the technical field of NFC antenna installation. Comprising a front shell which is of a frame structure with open front and rear ends; the hardware plate is arranged in the front shell, the hardware plate divides the front shell into a front accommodating cavity and a rear accommodating cavity, and a through hole is formed in the hardware plate; the NFC antenna is arranged on the side wall, facing one side of the front accommodating cavity, of the hardware plate, and one part of the NFC antenna penetrates through the through hole and extends into the rear accommodating cavity; and the main board is arranged in the rear accommodating cavity and is connected with the NFC antenna positioned in the rear accommodating cavity. According to the under-screen NFC antenna mounting structure provided by the utility model, the corresponding mounting position is reserved on the hardware plate, so that the NFC antenna and the hardware plate can be quickly fixed on the hardware plate, and the signal through groove is formed in the backlight plate of the LCD assembly, so that the NFC antenna can realize front induction. The quick assembling device is simple in structure and capable of quickly assembling products.

Description

Technical Field

[0001] The utility model relates to the technical field of NFC antenna installation, and in particular to an under-screen NFC antenna installation structure. Background Art

[0002] NFC (Near Field Communication) is a short-range high-frequency radio technology that allows devices to transmit data wirelessly within a few centimeters. NFC technology is commonly used in mobile phones, smart watches, smart cards and other devices, and can be used in a variety of scenarios such as mobile payments, access control, and data transmission. When NFC technology is used in smaller electronic devices such as handheld terminals, higher requirements are also placed on the integration of electronic devices. Generally speaking, the screen assembly of an electronic device has a greater shielding effect on the NFC antenna, so most electronic devices install the NFC antenna on the inner wall of the back cover. When in use, the magnetic stripe card must be moved to the back of the electronic device to successfully complete the induction. Although there is also a structure that places the NFC antenna under the screen assembly to achieve front sensing, this type of structure currently makes the product structure more complicated, making assembly inconvenient. Utility Model Content

[0003] The utility model provides an under-screen NFC antenna installation structure, which is used to solve the problem in the prior art that the NFC antenna is placed under the screen assembly, which makes the product structure complicated and inconvenient to assemble.

[0004] The utility model provides an under-screen NFC antenna installation structure, comprising:

[0005] The front shell is a frame structure with open front and rear ends;

[0006] A hardware plate is disposed in the front shell, the hardware plate divides the front shell into a front accommodating cavity and a rear accommodating cavity, and a through hole is opened on the hardware plate;

[0007] An NFC antenna is disposed on a side wall of the metal plate facing the front accommodating cavity, and a portion of the NFC antenna passes through the through hole and extends into the rear accommodating cavity;

[0008] The mainboard is disposed in the rear accommodating cavity and connected to the NFC antenna located in the rear accommodating cavity.

[0009] According to an under-screen NFC antenna installation structure provided by the utility model, a mounting groove is recessed on the side wall of the hardware plate facing the front accommodating cavity, the mounting groove is provided with the through hole penetrating the hardware plate, and the NFC antenna is arranged in the mounting groove.

[0010] According to an under-screen NFC antenna installation structure provided by the utility model, it also includes an LCD component, the LCD component is located in the front accommodating cavity, and a penetrating signal through groove is opened on the backlight panel of the LCD component, and the signal through groove corresponds to the installation groove.

[0011] According to an under-screen NFC antenna installation structure provided by the utility model, the size of the signal through groove is larger than the size of the installation groove.

[0012] According to an under-screen NFC antenna installation structure provided by the utility model, it also includes a TP cover plate, and the TP cover plate is arranged on the front end surface of the front shell.

[0013] According to an under-screen NFC antenna installation structure provided by the utility model, the NFC antenna includes an antenna body and a connecting piece, the antenna body is located in the installation groove, the first end of the connecting piece is connected to the antenna body, and the second end of the connecting piece passes through the through hole and is tightly attached to the hardware plate.

[0014] According to an under-screen NFC antenna installation structure provided by the utility model, the mainboard is provided with a contact spring at a position corresponding to the second end of the connecting piece, and the contact spring abuts against the second end of the connecting piece.

[0015] According to an under-screen NFC antenna installation structure provided by the utility model, the FPC of the LCD component is arranged on one side of the signal through groove.

[0016] The under-screen NFC antenna installation structure provided by the utility model can quickly fix the NFC antenna on the hardware board by reserving a corresponding installation position on the hardware board. At the same time, it also facilitates the connection between the mainboard and the hardware board. When the mainboard is installed, the mainboard and the NFC antenna are connected to form a circuit connection state; a signal through slot is provided on the backlight board of the LCD component, so that the NFC antenna can realize front sensing. The utility model has a simple structure and can quickly assemble the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a split schematic diagram of the under-screen NFC antenna installation structure provided by the utility model;

[0019] Figure 2This is an exploded view of the front shell, NFC antenna and motherboard;

[0020] Figure 3 yes Figure 2 A front view of the assembly state;

[0021] Figure 4 yes Figure 2 Schematic diagram of the assembly status on the back;

[0022] Figure 5 yes Figure 4 Schematic diagram after removing the motherboard;

[0023] Figure 6 It is a schematic diagram of the structure of the NFC antenna;

[0024] Figure 7 It is a structural diagram of the motherboard;

[0025] Figure 8 This is a connection diagram between the mainboard and the NFC antenna;

[0026] Fig. 9 This is an enlarged view of the connection location between the motherboard and the NFC antenna.

[0027] Reference numerals:

[0028] 100, front shell; 200, metal plate; 201, through hole; 202, mounting slot;

[0029] 300, NFC antenna; 301, antenna body; 302, connecting piece;

[0030] 400, main board; 401, contact spring;

[0031] 500, LCD assembly; 501, backlight panel; 502, signal channel; 503, FPC;

[0032] 600,TP cover. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Combine the following Figure 1-Figure 9The utility model is described as an under-screen NFC antenna installation structure, which includes a front shell 100, a hardware plate 200, an NFC antenna 300, a main board 400, an LCD component 500 and a TP cover plate 600.

[0035] The front shell 100 is a frame structure with front and rear ends open; the front shell 100 is an integral injection molding structure;

[0036] The hardware plate 200 is arranged in the front shell 100, and the hardware plate 200 divides the front shell 100 into a front accommodating cavity and a rear accommodating cavity. A through hole 201 is opened on the hardware plate 200; the hardware plate 200 is a metal plate, which can be one of a steel plate, an aluminum plate, a copper plate, etc.; the hardware plate 200 is fixed in the front shell 100 by screws, and an installation position is reserved on the hardware plate 200 to play a positioning role for the installation of the NFC antenna 300 and the main board 400.

[0037] The NFC antenna 300 is disposed on the side wall of the metal plate 200 facing the front accommodating cavity, and a portion of the NFC antenna 300 passes through the through hole 201 and extends into the rear accommodating cavity;

[0038] Specifically, a mounting groove 202 is recessed on the side wall of the hardware plate 200 facing the front accommodating cavity, a through hole 201 penetrating the hardware plate 200 is opened in the mounting groove 202 , and the NFC antenna 300 is disposed in the mounting groove 202 .

[0039] The main board 400 is disposed in the rear accommodating cavity, fixed to the hardware plate 200 by screws, and connected to the NFC antenna 300 located in the rear accommodating cavity.

[0040] In terms of specific structure, the NFC antenna 300 includes an antenna body 301 and a connecting piece 302. The antenna body 301 is located in the mounting groove 202. The first end of the connecting piece 302 is connected to the antenna body 301. The second end of the connecting piece 302 passes through the through hole 201 and is tightly attached to the hardware plate 200. Furthermore, the antenna body 301 is an annular sheet structure, and the back side (the side close to the mounting groove 202) is bonded to the mounting groove 202 by adhesive. The connecting piece 302 is an elongated sheet structure, located in the annular structure of the antenna body 301, with its first end connected to the antenna body 301 and the second end extending toward the center point of the antenna body 301. The second end of the connecting piece 302 has a bending portion, so that the end of the second end deviates from the first end toward the side of the hardware plate 200, and the deviation is slightly larger than the thickness of the hardware plate 200. After the second end of the connecting piece 302 passes through the through hole 201, it can be bonded to the back side of the hardware plate 200 using adhesive. During assembly, the connecting piece 302 can be first passed through the through hole 201, and then the entire NFC antenna 300 can be firmly bonded to the hardware plate 200.

[0041] The mainboard 400 is provided with a contact spring 401 at a position corresponding to the second end of the connecting piece 302, and the contact spring 401 abuts against the second end of the connecting piece 302. The second end of the connecting piece 302 is provided with an antenna feed point on the end surface facing the mainboard 400, and the antenna feed point corresponds to the contact spring 401. There are two antenna feed points and two contact springs 401, and the two correspond to each other. When the two are in contact, the NFC antenna 300 enters a circuit-connected state. During assembly, the NFC antenna 300 is first bonded to the hardware plate 200 as described above, and then the hardware plate 200 is fixed in the front shell 100, and then the mainboard 400 is fixed on the hardware plate 200. When the mainboard 400 is fixed, the contact spring 401 squeezes the connecting piece 302 to form a circuit-connected state. Since the hardware plate 200 is a hard plate, it has sufficient hardness to face the squeezing of the contact spring 401, so that the contact spring 401 and the connecting piece 302 form a stable connection state, and no welding is required.

[0042] The LCD component 500 is located in the front accommodating cavity, and a through signal slot 502 is provided on the backlight plate 501 of the LCD component 500, and the signal slot 502 corresponds to the mounting slot 202. Specifically, the size of the signal slot 502 is larger than the size of the mounting slot 202. It can be understood that the center point of the signal slot 502 corresponds to the center point of the mounting slot 202, and the projection of the mounting slot 202 on the backlight plate 501 completely falls into the signal slot 502. The size of the signal slot 502 is about 0.5 mm larger on one side relative to the mounting slot 202, so that the radio frequency signal can pass when sensing from the front (the backlight plate 501 is generally made of metal, which will shield the radio frequency signal, so a slot is required). The FPC503 (FPC, Flexible Printed Circuit) of the LCD component 500 is set on one side of the signal slot 502, and the PFC503 routing is set next to the signal slot 502 to avoid overlapping with the NFC antenna 300 to avoid affecting the radio frequency signal.

[0043] The TP cover plate 600 is disposed on the front face of the front housing 100 to cover the front accommodating cavity and protect the LCD assembly 500. The TP cover plate 600 is a protective cover plate of the touch screen panel (Touch Panel). It is a transparent material covering the touch screen to protect the touch screen from dust, scratches and other possible damages. Figure 1 As shown, the LCD assembly 500 and the TP cover plate 600 are turned over as indicated by the arrows in the figure, so that the LCD assembly 500 enters the front accommodating cavity, and the TP cover plate 600 covers the front accommodating cavity, and then fixed with other fasteners to complete the assembly.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An under-screen NFC antenna installation structure, characterized in that: include: The front shell is a frame structure with open front and rear ends; A hardware plate is disposed in the front shell, the hardware plate divides the front shell into a front accommodating cavity and a rear accommodating cavity, and a through hole is opened on the hardware plate; An NFC antenna is disposed on a side wall of the metal plate facing the front accommodating cavity, and a portion of the NFC antenna passes through the through hole and extends into the rear accommodating cavity; The mainboard is disposed in the rear accommodating cavity and connected to the NFC antenna located in the rear accommodating cavity.

2. The under-screen NFC antenna installation structure according to claim 1, characterized in that: A mounting groove is recessed on the side wall of the hardware plate facing the front accommodating cavity, the mounting groove is provided with the through hole penetrating the hardware plate, and the NFC antenna is arranged in the mounting groove.

3. The under-screen NFC antenna installation structure according to claim 2, characterized in that: It also includes an LCD component, which is located in the front accommodating cavity. A penetrating signal through groove is opened on the backlight plate of the LCD component, and the signal through groove corresponds to the installation groove.

4. The under-screen NFC antenna installation structure according to claim 3, characterized in that: The size of the signal through slot is larger than the size of the mounting slot.

5. The under-screen NFC antenna installation structure according to claim 1, characterized in that: It also includes a TP cover plate, which is arranged on the front end surface of the front shell.

6. The under-screen NFC antenna installation structure according to claim 2, characterized in that: The NFC antenna includes an antenna body and a connecting piece, wherein the antenna body is located in the mounting groove, a first end of the connecting piece is connected to the antenna body, and a second end of the connecting piece passes through the through hole and is tightly attached to the hardware plate.

7. The under-screen NFC antenna installation structure according to claim 6, characterized in that: The mainboard is provided with a contact spring at a position corresponding to the second end of the connecting piece, and the contact spring abuts against the second end of the connecting piece.

8. The under-screen NFC antenna installation structure according to claim 3, characterized in that: The FPC of the LCD assembly is arranged on one side of the signal through slot.

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