CN206775829U - A kind of accurate pcb board composing structure for carrying out resistance test - Google Patents

Abstract

The utility model discloses a kind of accurate pcb board composing structure for carrying out resistance test, including pcb board, motherboard and daughter board, jack is provided with the pcb board, the periphery of the motherboard is provided with pin, the motherboard is fixedly connected by pin with jack, jack two is provided with the motherboard, the periphery of the daughter board is provided with pin two, the daughter board is fixedly connected by pin two with motherboard, resistance detection module is provided with the pcb board, the input of the resistance detection module between connecting line and jack and pin by connecting.The accurate pcb board composing structure for carrying out resistance test, easy for installation, resistance numerical value detection accuracy is high.

Description

A PCB layout structure for precise impedance testing

technical field

The utility model relates to the technical field of PCB board production, in particular to a PCB board typesetting structure for accurately performing impedance testing.

Background technique

When the PCB board is produced, it is necessary to test the impedance value of the circuit inside the PCB board. In the traditional PCB board layout, when the number of blind slots is large, the production efficiency is reduced. When the thickness of the PCB blind slot board is small, it is difficult to control the quality requirements of the PCB blind slot board, and it is difficult to detect the impedance value of the PCB board.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose a PCB layout structure for accurate impedance testing.

In order to achieve the above object, the utility model adopts the following technical solutions:

A PCB board typesetting structure for accurate impedance testing, including a PCB board, a mother board and a daughter board, the PCB board is provided with jacks, and the periphery of the mother board is provided with pins. The holes are fixedly connected, the motherboard is provided with jack 2, the periphery of the daughter board is provided with pin 2, the daughter board is fixedly connected with the mother board through pin 2, and the PCB board is provided with a resistance detection module, The input end of the resistance detection module is connected to the jack and the pins through the connecting wire.

Preferably, a jack three is provided on the side of the PCB corresponding to the sub-board, and the other side of the sub-board is fixedly connected to the jack three on the PCB. The second pin of the sub-board is fixed to the PCB board through the third pin, so as to improve the stability of the sub-board installed on the motherboard and the PCB board, and facilitate the installation of the sub-board.

Preferably, a gap is provided between the socket and the pin, and the pin is fixed and electrically connected to the inner wall of the socket. While facilitating the installation of pins and jacks, it is convenient to insert the input end of the impedance detection module into the connection between pins and jacks through the gap, so as to accurately detect its running impedance value.

Preferably, the end of the connecting wire is provided with a pressing elastic piece, and the pressing elastic piece is arranged in contact with the pin and the socket. The connecting wire goes deep into the gap between the pin and the jack through the spring pressing piece, and the overlap between the pin and the jack is convenient for the impedance value test of the electrified operation between the pin and the jack, and the obtained data is guaranteed to be accurate.

Preferably, an impedance detection module is provided at the back of the PCB corresponding to the motherboard, and the input end of the impedance detection module is electrically connected to the pins. Through the impedance detection module, the impedance group data connected between the motherboard and the PCB board are individually detected one by one to improve the accuracy of the detection data.

In the utility model, the motherboard is inserted into the socket through the pins, the sub-board is inserted into the socket two and the socket three on the PCB board through the two pins, and the connection line is inserted into the gap between the pins and the socket through the elastic pressing piece. For the overlapping connection between the pin and the jack, the resistance value between the jack and the pin is detected through the resistance detection module, and the impedance detection module detects the impedance group data connected between the motherboard and the PCB board one by one, Ensure the accuracy of the test data. The layout structure of the PCB board for accurate impedance testing is convenient for installation and the detection accuracy of the impedance value is high.

Description of drawings

Fig. 1 is the structural representation of a kind of PCB layout structure that accurately carries out impedance test that the utility model proposes;

Fig. 2 is a schematic diagram of the enlarged structure of part A of a PCB layout structure that is accurately tested by the utility model;

Fig. 3 is a top view of a layout structure of a PCB board for accurate impedance testing proposed by the utility model.

In the figure: 1 PCB board; 11 jack; 12 jack three; 2 mother board; 21 pin; 22 jack two; 23 gap; 3 sub-board; 31 pin two; 4 resistance detection module; Shrapnel; 43 impedance detection modules.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-3, a PCB board layout structure for accurate impedance testing includes a PCB board 1, a motherboard 2 and a daughter board 3, the PCB board 1 is provided with a jack 11, and the periphery of the motherboard 2 Pins 21 are provided, and the motherboard 2 is fixedly connected to the jack 11 through the pins 21. The motherboard 2 is provided with a jack 22, and the periphery of the sub-board 3 is provided with a pin 2 31. The sub-board 3 is fixedly connected to the mother board 2 through the pin 2 31, the side of the PCB 1 corresponding to the sub-board 3 is provided with a jack 3 12, and the other side of the sub-board 3 is connected to the jack 3 on the PCB 1 12 fixed connections. Fix the pin two 31 of the sub-board 3 and the PCB board 1 through the pin three 13, improve the stability of the sub-board 3 installed on the motherboard 2 and the PCB board 1, and facilitate the installation of the sub-board 3 . A gap 23 is provided between the socket 11 and the pin 21 , and the pin 21 is fixed and electrically connected to the inner wall of the socket 11 . While facilitating the installation of the pin 21 and the jack 11 , it is convenient to insert the input end of the impedance detection module 4 into the connection between the pin 21 and the jack 11 through the gap 23 , so as to accurately detect its running impedance value. The PCB 1 is provided with a resistance detection module 4 , and the input end of the resistance detection module 4 is connected to the socket 11 and the pin 21 through a connection line 41 . The end of the connecting wire 41 is provided with a pressing elastic piece 42 , and the pressing elastic piece 42 is arranged in contact with the pin 21 and the socket 11 . The connection wire 41 goes deep into the gap 23 between the pin 21 and the jack 11 through the spring pressing piece 42, and overlaps between the pin 21 and the jack 11, so as to facilitate the resistance value test of the electrified operation between the pin 21 and the jack 11 , to ensure the accuracy of the data obtained. An impedance detection module 43 is provided on the back of the PCB 1 corresponding to the motherboard 2 , and the input end of the impedance detection module 43 is electrically connected to the pin 21 . The resistance group data connected between the motherboard 2 and the PCB board 1 are individually detected one by one through the impedance detection module 43 to improve the accuracy of the detection data.

In the utility model, the motherboard 2 is inserted into the jack 11 through the pin 21, the sub-board 3 is inserted into the jack 2 22 and the jack 3 12 on the PCB board 1 through the pin 2 31, and the connecting wire 41 goes deep through the spring pressing piece 42. In the gap 23 between the pin 21 and the jack 11, the pin 21 and the jack 11 are overlapped, and the resistance value detection between the jack 11 and the pin 21 after the resistance detection module 4 is energized is detected, and the resistance is detected. The module 43 individually detects the anti-group data connected between the motherboard 2 and the PCB 1 one by one to ensure the accuracy of the detection data.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (5)

1. a kind of accurate pcb board composing structure for carrying out resistance test, including pcb board (1), motherboard (2) and daughter board (3), it is special Sign is, jack (11) is provided with the pcb board (1), and the periphery of the motherboard (2) is provided with pin (21), the motherboard (2) it is fixedly connected by pin (21) with jack (11), jack two (22) is provided with the motherboard (2), the daughter board (3) Periphery is provided with pin two (31), and the daughter board (3) is fixedly connected by pin two (31) with motherboard (2), the pcb board (1) On be provided with resistance detection module (4), the input of the resistance detection module (4) by connecting line (41) and jack (11) and Pin connects between (21).

2. a kind of accurate pcb board composing structure for carrying out resistance test according to claim 1, it is characterised in that described The side that daughter board (3) is corresponded on pcb board (1) is provided with jack three (12), the opposite side of the daughter board (3) with pcb board (1) Jack three (12) is fixedly connected.

3. a kind of accurate pcb board composing structure for carrying out resistance test according to claim 1, it is characterised in that described Gap (23) is provided between jack (11) and pin (21), the pin (21) is fixed with jack (11) inwall and is electrically connected with.

4. a kind of accurate pcb board composing structure for carrying out resistance test according to claim 1, it is characterised in that described The end of connecting line (41) is provided with pressure shell fragment (42), and the pressure shell fragment (42) contacts setting with pin (21) and jack (11).

5. a kind of accurate pcb board composing structure for carrying out resistance test according to claim 1, it is characterised in that described Pcb board (1) back side corresponds to motherboard (2) place and is provided with resistance detection module (43), the input of the resistance detection module (43) It is electrically connected with pin (21).