Tablet learning book with wifi antenna

Abstract

The utility model provides a tablet learning book with a wifi antenna, which comprises a metal shell of the tablet learning book, a circuit board and a support, the circuit board and the support are positioned in the metal shell, the circuit board is mounted on the support to form the wifi antenna, and the wifi antenna is fixed on the metal shell through screws to realize grounding of the wifi antenna. The beneficial effects of the utility model are that the wifi antenna is grounded by screwing, the anti-interference performance of the antenna is better, and the sensitivity performance of the actually measured OTA is better.

Description

Technical Field

[0001] The utility model relates to the field of electromechanical technology, and in particular to a tablet learning book with a wifi antenna. Background Art

[0002] Under the existing technology, many tablet learning books on the market are all-metal in appearance, with narrow space and little clearance in the WiFi antenna area, resulting in poor performance of the antenna itself. The main reason is that the antenna itself is not firmly grounded or there are errors in the factory's assembly, which leads to poor performance stability of the antenna itself. Utility Model Content

[0003] In order to solve the technical problem of poor performance or poor stability of WiFi antennas in the prior art, the utility model provides a tablet learning book with a WiFi antenna, including a metal shell of the tablet learning book, and also including a circuit board and a bracket located in the metal shell. The circuit board is installed on the bracket to form a WiFi antenna, and the WiFi antenna is fixed to the metal shell by screws to achieve grounding of the WiFi antenna.

[0004] As a further improvement of the present invention, the wifi antenna also includes a radio frequency line, and one end of the radio frequency line is connected to the circuit board.

[0005] As a further improvement of the present invention, the other end of the radio frequency line is connected to an ipex connector.

[0006] As a further improvement of the utility model, the circuit board is provided with a through hole, the screw is inserted into the through hole, the screw nut of the screw is in contact with the circuit board, and the screw rod of the screw is fixed on the metal shell, thereby realizing the grounding of the wifi antenna.

[0007] As a further improvement of the utility model, there are two through holes and two screws, the two screws are respectively inserted into the two through holes, the screw nuts of the two screws are in contact with the circuit board, and the screw rods of the two screws are fixed on the metal casing, thereby achieving grounding of the wifi antenna.

[0008] As a further improvement of the present invention, the bracket is made of plastic.

[0009] As a further improvement of the present invention, the circuit board is provided with a positioning hole, the bracket is provided with a positioning column, and the positioning column is embedded in the positioning hole.

[0010] As a further improvement of the present invention, there are three positioning holes, there are three positioning posts, and the three positioning posts are respectively embedded in the three positioning holes.

[0011] As a further improvement of the present invention, the circuit board is a flexible circuit board.

[0012] The beneficial effect of the utility model is that the wifi antenna of the utility model is grounded by screwing, the anti-interference performance of the antenna will be better, and the sensitivity performance of the actual measured OTA will also be better. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] like Figure 1 As shown, the utility model discloses a tablet learning book with a wifi antenna, including a metal shell of the tablet learning book, and also including a circuit board 1 and a bracket 2 located in the metal shell. The circuit board 1 is installed on the bracket 2 to form a wifi antenna, and the wifi antenna is fixed to the metal shell by screws to achieve grounding of the wifi antenna. The wifi antenna also includes a radio frequency line 3, one end of the radio frequency line 3 is connected to the circuit board 1, and the other end of the radio frequency line 3 is connected to the ipex connector 4.

[0015] As a preferred embodiment of the utility model, the circuit board 1 is provided with a through hole 5, the screw is inserted into the through hole 5, the screw cap of the screw is in contact with the circuit board 1, the screw rod of the screw is fixed to the metal shell, and the circuit board 1 and the metal shell are connected by the screw, thereby realizing the grounding of the wifi antenna. For example, there are two through holes 5, two screws, two screws are respectively inserted into two through holes 5, the screw caps of the two screws are in contact with the circuit board 1, and the screw rods of the two screws are fixed to the metal shell, thereby realizing the grounding of the wifi antenna. The bracket 2 is made of plastic, and the circuit board 1 is a flexible circuit board (FPC).

[0016] The circuit board 1 is provided with a positioning hole 6, and the bracket 2 is provided with a positioning column 7, and the positioning column 7 is embedded in the positioning hole 6 to facilitate the fitting of the circuit board 1 and the bracket 2. For example, there are three positioning holes 6 and three positioning columns 7, and the three positioning columns 7 are respectively embedded in the three positioning holes 6.

[0017] The wifi antenna of the utility model is grounded by screwing. During debugging, the antenna is more stable, the consistency will be better, and the radiation efficiency of the antenna itself will be higher. Because the wifi antenna is screwed, the antenna itself is DC grounded, and the anti-interference performance of such an antenna will be better, and the actual OTA sensitivity performance will be better. It is better than the conventional FPC conductive cloth grounding method, because after long-term use, the conductive cloth will oxidize inside the casing, and the performance will deteriorate over time, but the screw grounding method can avoid this problem.

[0018] The anti-interference performance and stability of the WiFi antenna after mass production of the utility model will be better than those of conventional WiFi antennas, and the passive performance will also be better. The antenna efficiency can also reach 2.4GHz-2.5GHz: 30% (OTA attenuation 5.2dbm) / 5.15GHz-5.85GHz: 40% (OTA attenuation 4dBm).

[0019] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A tablet learning book with a wifi antenna, comprising a metal shell of the tablet learning book, characterized in that: It also includes a circuit board (1) and a bracket (2) located in the metal shell. The circuit board (1) is installed on the bracket (2) to form a wifi antenna. The wifi antenna is fixed to the metal shell by screws to achieve grounding of the wifi antenna.

2. The tablet learning book according to claim 1, characterized in that: The wifi antenna also includes a radio frequency line (3), one end of which is connected to the circuit board (1).

3. The tablet learning book according to claim 2, characterized in that: The other end of the radio frequency line (3) is connected to an ipex connector (4).

4. The tablet learning book according to claim 1, characterized in that: The circuit board (1) is provided with a through hole (5), the screw is inserted into the through hole (5), the screw nut of the screw is in contact with the circuit board (1), and the screw rod of the screw is fixed on the metal shell, thereby achieving grounding of the wifi antenna.

5. The tablet learning book according to claim 4, characterized in that: There are two through holes (5) and two screws. The two screws are respectively inserted into the two through holes (5). The screw nuts of the two screws are in contact with the circuit board (1). The screw rods of the two screws are fixed on the metal shell, thereby realizing the grounding of the wifi antenna.

6. The tablet learning book according to claim 1, characterized in that: The bracket (2) is made of plastic.

7. The tablet learning book according to claim 1, characterized in that: The circuit board (1) is provided with a positioning hole (6), the bracket (2) is provided with a positioning column (7), and the positioning column (7) is embedded in the positioning hole (6).

8. The tablet learning book according to claim 7, characterized in that: There are three positioning holes (6), and there are three positioning posts (7). The three positioning posts (7) are respectively embedded in the three positioning holes (6).

9. The tablet learning book according to any one of claims 1 to 8, characterized in that: The circuit board (1) is a flexible circuit board.

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