CN220963798U

CN220963798U - Connection structure of coaxial wire harness and PCB

Info

Publication number: CN220963798U
Application number: CN202322642078.0U
Authority: CN
Inventors: 赵华伟; 刘苏河; 孙力
Original assignee: Fuba Automotive Antenna Suzhou Co ltd
Current assignee: Fuba Automotive Antenna Suzhou Co ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2024-05-14
Anticipated expiration: 2033-09-27

Abstract

The utility model relates to a connecting structure of a coaxial wire harness and a PCB (printed circuit board), which comprises a wire harness and the PCB, wherein the wire harness comprises a central conductor, an insulating layer and a braiding layer which are coaxially arranged, the insulating layer is coated outside the central conductor, the braiding layer is coated outside the insulating layer, the connecting structure also comprises a shielding terminal and a conductor terminal, the shielding terminal is fixed with the braiding layer, and the shielding terminal penetrates from one side of the PCB to the other side and is connected with the shielding terminal; the conductor terminal is connected with the central conductor, and the conductor terminal passes through one side of the PCB board to the other side and then is connected with the PCB board. The connecting structure of the utility model not only ensures the line conductivity of the wire harness and the PCB, but also avoids the phenomena of cable scalding/melting/poor short circuit caused by conventional high-temperature welding, improves the quality stability of products, and simultaneously reduces the economic loss caused by conventional poor welding and scrapping; and the connecting structure has wide applicability and is suitable for connecting coaxial wire harnesses made of various insulating materials with a PCB.

Description

Connection structure of coaxial wire harness and PCB

Technical Field

The utility model relates to the technical field of vehicle-mounted antennas, in particular to a connecting structure of a coaxial wire harness and a PCB.

Background

The braided insulating layer and the central conductor of the coaxial wire harness of the automobile are connected and conducted with the circuit on the PCB, so that the effects of signal conduction and interference shielding are achieved.

At present, the connection mode commonly used in the market is that pencil and PCB board direct contact, uses the flatiron to carry out the soldering connection, because the flatiron welding can produce higher temperature, often has the phenomenon such as the cable of intolerant high temperature is scalded/insulating layer melts outward at the welded in-process, causes the risk such as taking place product short circuit, causes a large amount of products to scrap.

Disclosure of Invention

The utility model aims to provide a connecting structure of a coaxial wire harness and a PCB.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The connecting structure of the coaxial wire harness and the PCB comprises the wire harness and the PCB, wherein the wire harness comprises a central conductor, an insulating layer and a braiding layer which are coaxially arranged, the insulating layer is coated outside the central conductor, the braiding layer is coated outside the insulating layer,

The connecting structure also comprises a shielding terminal and a conductor terminal, wherein the shielding terminal is fixed with the weaving layer and is connected with the PCB after passing through one side of the PCB to the other side; the conductor terminal is connected with the central conductor, and the conductor terminal passes through one side of the PCB to the other side and then is connected with the PCB.

According to the technical scheme, the shielding terminal comprises a shielding connecting part and shielding pins, wherein the shielding connecting part is fixedly connected with the weaving layer, and the shielding pins penetrate through the PCB and are connected with the PCB.

Further preferably, the shielding connection part is provided with a connection part main body and a pressing part, the pressing part is coated outside the braiding layer, and the shielding pin is connected to the connection part main body.

Still more preferably, the press-fitting portion is a portion of the connecting portion main body.

Still further preferably, the shielding pin is perpendicular to the surface of the connecting portion body.

Further preferably, a plurality of shielding pins are provided.

Preferably, the above technical scheme is that the conductor terminal comprises a conductor sleeve and a conductor pin, the conductor sleeve is fixedly sleeved outside the central conductor, and the conductor pin passes through the PCB board and is connected with the PCB board.

Further preferably, the axial direction of the conductor sleeve is perpendicular to the extending direction of the conductor pins.

Further preferably, the conductor sleeve and the conductor pins are connected into a whole or integrally formed,

In the above technical solution, preferably, the shielding terminal and/or the conductor terminal is plated with phosphor bronze.

According to the technical scheme, preferably, the PCB is provided with a shielding hole and a conductor hole, and the shielding hole is used for the shielding terminal to pass through; the conductor hole is used for the conductor terminal to pass through.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

The connecting structure of the utility model not only ensures the line conductivity of the wire harness and the PCB, but also avoids the phenomena of cable scalding/melting/poor short circuit caused by conventional high-temperature welding, improves the quality stability of products, and simultaneously reduces the economic loss caused by conventional poor welding and scrapping; and the connecting structure has wide applicability and is suitable for connecting coaxial wire harnesses made of various insulating materials (high temperature resistant or not high temperature resistant) with the PCB.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of a second embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of the harness connection shield terminal and the conductor terminal of the present utility model;

fig. 4 is a schematic view of the structure of the shield terminal of the present utility model;

FIG. 5 is a schematic view of the structure of the conductor terminal of the present utility model;

fig. 6 is a schematic diagram of a PCB board of the present utility model.

In the above figures:

1. a wire harness; 10. a center conductor; 11. an insulating layer; 12. a braiding layer; 13. a skin;

2. a PCB board; 20. a shielding hole; 21. a conductor hole;

3. A shield terminal; 300. a connecting part main body; 301. a pressing part; 31. shielding pins;

4. A conductor terminal; 40. a conductor sleeve; 41. and a conductor pin.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The connection structure of the coaxial harness and the PCB as shown in figures 1 and 2 comprises a harness 1, the PCB 2, a shielding terminal 3 and a conductor terminal 4.

Taking the wire harness 1 used in the present embodiment as an example, it includes a center conductor 10, an insulating layer 11, a braid 12, and a sheath 13 coaxially provided, and the center conductor 10, the insulating layer 11, the braid 12, and the sheath 13 are provided in this order from the inside to the outside, as shown in fig. 3. The wire harness 1 needs to be electrically connected with a PCB board, in the illustration, a part of the outer skin 13 at one end of the wire harness 10 needs to be removed to expose a section of the braid 12, and then a part of the braid 12 and the insulating layer 11 need to be removed to expose a section of the central conductor 10.

The PCB 2 is provided with a shielding hole 20 and a conductor hole 21, wherein the shielding hole 20 is used for the shielding terminal 3 to pass through; the conductor hole 21 is for the conductor terminal 4 to pass through.

The shielding terminal 3 is fixed with the braid 12 of the wire harness 1, and meanwhile, the shielding terminal 3 passes through one side (front) of the PCB board 3 to the other side (back) and then is connected with the PCB board, and the shielding terminal can be made of phosphor bronze tinned material. In this embodiment: the shield terminal 3 includes a shield connection portion, a shield pin 31, wherein:

The shielding connection part is fixedly connected with the braiding layer 12 of the wire harness 1. In one implementation of the present embodiment: the shield connection part has a connection part main body 300 and a press part 301, and the press part 301 is a part of the connection part main body 300, as shown in fig. 4: the connecting portion main body 300 is sheet-shaped, and the wrapping portion 301 is partially wrapped around the braid 12 of the wire harness 1 from the sheet-shaped connecting portion main body 300 and is fixed by crimping, and the wrapping portion 301 is wrapped from both sides in the drawing.

The shielding pins 31 penetrate through the PCB 2 and are exposed from the other side of the PCB 2, and then the shielding pins 31 are welded from the back of the PCB 2 through soldering iron to connect the two. The shield pin 31 is connected to the connection part body 300 and is perpendicular to the surface of the connection part body 300. The number of shielding pins 31 may be plural, in the illustration, three are taken as an example, and the number of shielding holes 20 formed on the PCB board 2 corresponds to the number of shielding pins 31 one by one, and one shielding pin 31 passes through one shielding hole.

The conductor terminal 4 is connected with the central conductor 10 of the wire harness 1, meanwhile, the conductor terminal 4 passes through one side (front) of the PCB board to the other side (back) and then is connected with the PCB board, so that signal conduction is realized, and the conductor terminal can be made of phosphor bronze tinned materials. In this embodiment: the conductor terminal 4 comprises a conductor sleeve 40 and a conductor pin 41, wherein the conductor sleeve 40 and the conductor pin 41 are connected into a whole or integrally formed, and the conductor sleeve 40 and the conductor pin 41 are formed by the following steps:

the conductor sleeve 40 is sleeved outside the central conductor 10 of the wire harness 1 and is riveted to fix the central conductor and the central conductor. The conductor pins 41 pass through the PCB 2 and are exposed from the other side of the PCB 2, and then the conductor pins 41 are welded from the back of the PCB 2 through soldering iron to connect the two. The axial direction of the conductor sleeve 40 is perpendicular to the extending direction of the conductor pins 41. Only one conductor pin 41 is provided.

In the embodiment, the shielding pins and the conductor pins are welded from the back of the PCB, so that high-temperature direct contact with wires can be avoided, the circuit conductivity of the wire harness and the PCB is ensured, and the phenomena of cable scalding/melting/poor short circuit caused by conventional high-temperature welding are avoided, so that the structural integrity of the cable is protected, and the performance of the product is well guaranteed.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. The connecting structure of the coaxial wire harness and the PCB comprises the wire harness and the PCB, wherein the wire harness comprises a central conductor, an insulating layer and a braiding layer which are coaxially arranged, the insulating layer is coated outside the central conductor, the braiding layer is coated outside the insulating layer,

The method is characterized in that: the connecting structure also comprises a shielding terminal and a conductor terminal, wherein the shielding terminal is fixed with the weaving layer and is connected with the PCB after passing through one side of the PCB to the other side; the conductor terminal is connected with the central conductor, and the conductor terminal passes through one side of the PCB to the other side and then is connected with the PCB.

2. The connection structure of the coaxial harness and the PCB board according to claim 1, wherein: the shielding terminal comprises a shielding connecting part and a shielding pin, the shielding connecting part is fixedly connected with the weaving layer, and the shielding pin penetrates through the PCB and is connected with the PCB;

The shielding pins are provided with a plurality of shielding pins.

3. The connection structure of the coaxial harness and the PCB board according to claim 2, wherein: the shielding connecting part is provided with a connecting part main body and a pressing part, the pressing part is coated outside the braiding layer, and the shielding pin is connected to the connecting part main body.

4. The connection structure of the coaxial harness and the PCB according to claim 3, wherein: the wrapping and pressing part is a part of the connecting part main body.

5. The connection structure of the coaxial harness and the PCB according to claim 3, wherein: the shielding pins are perpendicular to the surface of the connecting part main body.

6. The connection structure of the coaxial harness and the PCB board according to claim 1, wherein: the conductor terminal comprises a conductor sleeve and conductor pins, the conductor sleeve is fixedly sleeved outside the central conductor, and the conductor pins penetrate through the PCB and are connected with the PCB.

7. The connection structure of the coaxial harness and the PCB board according to claim 6, wherein: the axis direction of the conductor sleeve is perpendicular to the extending direction of the conductor pins.

8. The connection structure of the coaxial harness and the PCB board according to claim 6, wherein: the conductor sleeve and the conductor pins are connected into a whole or integrally formed.

9. The connection structure of the coaxial harness and the PCB board according to claim 1, wherein: the shielding terminal and/or the conductor terminal are/is plated with phosphor bronze.

10. The connection structure of the coaxial harness and the PCB board according to claim 1, wherein: the PCB is provided with a shielding hole and a conductor hole, and the shielding hole is used for the shielding terminal to pass through; the conductor hole is used for the conductor terminal to pass through.