A wiring harness PCB wiring harness terminal and wiring harness connecting structure

Abstract

This utility model belongs to the field of electrical connector technology, specifically relating to a wire harness PCB terminal and wire harness connection structure, including a wire harness terminal, a wire harness body, and a PCB board. The wire harness terminal includes a crimping groove and a plurality of conductor pins for connecting to the PCB board. The wire harness body includes a conductor. The PCB board has PCB soldering holes with the same number as the conductor pins. The conductor is crimped into the crimping groove, and the conductor pins are inserted into the PCB soldering holes and fixed to the PCB board by soldering. This utility model directly crimps the wire harness conductor through the crimping groove and fixes it by inserting the conductor pins into the PCB soldering holes, which reduces the installation difficulty and labor cost, while also reducing the overall structural weight. At the same time, this structure is easy to install, has a firm connection, adopts mature and reliable technology, is feasible for large-scale production, and can ensure stable current transmission in equipment.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connector technology, specifically relating to a wire harness PCB wire harness terminal and wire harness connection structure. Background Technology

[0002] With the booming development of the new energy vehicle industry, the application of power supply equipment in the automotive industry is becoming more and more widespread, and the power requirements for vehicle electrical equipment are increasing. Reliable connections are crucial for power supply equipment. Traditional PCB wire harness terminal installation has many limitations and requires a lot of process and structural environment. Using bolts to fix terminals increases mechanical strength, but leads to increased weight and reduced assembly efficiency. Summary of the Invention

[0003] In view of the above-mentioned shortcomings in the prior art, the present invention provides a wire harness PCB wire harness terminal and wire harness connection structure to solve the problems in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a wire harness PCB terminal and wire harness connection structure, comprising a wire harness terminal, a wire harness body and a PCB board, wherein the wire harness terminal includes a crimping groove and a plurality of conductor pins for connecting to the PCB board; the wire harness body includes a conductor; the PCB board has PCB soldering holes with the same number as the conductor pins; the conductor is crimped in the crimping groove, and the conductor pins are inserted into the PCB soldering holes and fixed to the PCB board by soldering.

[0005] Preferably, the wire harness terminal is made of phosphor bronze material and stamped with a tin layer on the surface, the thickness of which is 2.5 micrometers. Using a phosphor bronze substrate with a 2.5-micrometer tin layer on the surface can significantly improve the conductivity, elasticity and corrosion resistance of the terminal, and ensure stable contact resistance during long-term use.

[0006] Preferably, the conductor is a copper wire, and the portion of the conductor crimped into the crimp groove is exposed, while the remaining portion is covered with an insulating layer. This design, where the exposed portion of the conductor is crimped and the remaining portion is covered with an insulating layer, ensures the reliability of the electrical connection and effectively prevents the risk of short circuits.

[0007] Preferably, the conductor has a cross-sectional area of ​​8 square millimeters; the conductor with a cross-sectional area of ​​8 square millimeters can carry high current loads and meet the power supply requirements of high-power equipment in new energy vehicles.

[0008] Preferably, the conductor pins are fixed to the PCB solder holes by wave soldering; wave soldering of the conductor pins results in full and uniform solder joints, which can significantly improve connection strength and conductivity.

[0009] Preferably, the wire harness terminal has a crimping groove and four conductor pins; the crimping groove is 10 mm wide and 7.7 mm high; the conductor pins are 2.6 mm wide and 3.5 mm high; and the wire harness terminal is 1 mm thick.

[0010] Preferably, the PCB soldering hole is an elliptical hole with a major axis of 3.3 mm and a minor axis of 1.4 mm. The elliptical design of the PCB soldering hole provides tolerance space for pin insertion and avoids poor soldering or stress concentration caused by soldering misalignment.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] 1. By directly pressing the wire harness conductor through the wire groove and fixing it by inserting the conductor pin into the PCB soldering hole, the installation difficulty and labor cost are reduced, while the overall structural weight is reduced. At the same time, the structure is easy to install, the connection is firm, the process is mature and reliable, it is feasible for large-scale production, and it can ensure stable current transmission of the equipment.

[0013] 2. The wire harness terminals are made of phosphor bronze and are paired with copper wire conductors to provide excellent conductivity and corrosion resistance. The conductor leads are fixed to the PCB solder holes by wave soldering. Combined with the elliptical hole design, it ensures that the solder fully fills the gaps, enhancing mechanical strength and current carrying capacity. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the PCB board structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the wire harness body of this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the wire harness terminal of this utility model.

[0018] Figure 5 This is a schematic diagram of the connection steps of this utility model.

[0019] The reference numerals in the accompanying drawings include:

[0020] 1. Wire harness terminal; 2. Wire harness body; 3. PCB board; 10. Wire crimping groove; 11. Conductor pin; 20. Conductor; 21. Insulation layer; 30. PCB soldering hole. Detailed Implementation

[0021] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0023] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figures 1 to 5 As shown, a wire harness PCB terminal and wire harness connection structure includes a wire harness terminal 1, a wire harness body 2, and a PCB board 3. The wire harness terminal 1 includes a wire crimping groove 10 and a plurality of conductor pins 11 for connecting to the PCB board 3. The wire harness body 2 includes conductors 20. The PCB board 3 has PCB solder holes 30 with the same number of conductor pins 11. The conductors 20 are crimped in the wire crimping groove 10, and the conductor pins 11 are inserted into the PCB solder holes 30 and fixed to the PCB board 3 by soldering.

[0026] In this embodiment, the wire harness terminal 1 is made of phosphor bronze material and stamped with a tin layer on the surface. The thickness of the tin layer is 2.5 micrometers. The phosphor bronze substrate and the 1 mm thickness provide mechanical strength, and the tin layer can enhance conductivity and solderability.

[0027] In this embodiment, the conductor 20 is a copper wire, and the part of the conductor 20 that is crimped into the crimping groove 10 is exposed, while the remaining part is covered with an insulating layer 21; the insulating layer 21 only covers the non-crimped area of ​​the conductor 20, and the crimped part remains exposed.

[0028] In this embodiment, the cross-sectional area of ​​conductor 20 is 8 square millimeters.

[0029] In this embodiment, the conductor pin 11 is fixed to the PCB soldering hole 30 by wave soldering.

[0030] In this embodiment, the wire harness terminal 1 has a wire crimping groove 10 and four conductor pins 11; the wire crimping groove 10 has a width of 10 mm and a height of 7.7 mm; the conductor pins 11 have a width of 2.6 mm and a height of 3.5 mm; the material thickness of the wire harness terminal 1 is 1 mm.

[0031] In this embodiment, the PCB soldering hole 30 is an elliptical hole with a major axis of 3.3 mm and a minor axis of 1.4 mm. The elliptical hole is designed to fit the size of the conductor pin 11 and also provides space for solder filling during wave soldering.

[0032] The working principle of this embodiment is as follows: (Refer to Appendix) Figure 5 The wire harness body 2 has two conductors 20, and each conductor 20 needs to be crimped and fixed with a wire harness terminal 1.

[0033] Step ①: Place the exposed portion of conductor 20 into the wire groove 10;

[0034] Step 2: Use an external crimping die to crimp the wire. Under the action of the crimping die, the crimping groove 10 bends and deforms, compressing and clamping the exposed part of the front end of the conductor 20 into the crimping groove 10.

[0035] Steps ③ and ④: After crimping, insert the four conductor pins 11 of one end of the wire harness terminal 1 into the corresponding PCB soldering holes 30 on the PCB board 3. Then, use an external soldering carrier to fix and limit the wire harness terminal 1 with conductors 20. Place the soldering carrier into the wave soldering oven for transfer. At the same time, the wire harness terminal 1 and other components are immersed in molten solder for wave soldering. After the soldering is completed and cooled, they are firmly connected. Afterwards, apply conformal coating around the PCB soldering holes 30 and let it dry. The entire PCB is then completed.

[0036] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software or methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A wiring harness PCB wiring harness terminal and wiring harness connecting structure, comprising a wiring harness terminal (1), a wiring harness body (2) and a PCB board (3), characterized in that: The wire harness terminal (1) includes a wire crimping groove (10) and a plurality of conductor pins (11) for connecting to the PCB board (3); the wire harness body (2) includes a conductor (20); the PCB board (3) has PCB solder holes (30) in the same number as the conductor pins (11); the conductor (20) is crimped in the wire crimping groove (10), and the conductor pins (11) are inserted into the PCB solder holes (30) and fixed to the PCB board (3) by soldering.

2. The wiring harness PCB wiring harness terminal and wiring harness connection structure of claim 1, wherein: The wire harness terminal (1) is made of phosphor bronze material and is plated with a tin layer on its surface. The thickness of the tin layer is 2.5 micrometers.

3. The wiring harness PCB wiring harness terminal and wiring harness connection structure of claim 1, wherein: The conductor (20) is a copper wire, and the part of the conductor (20) that is crimped into the crimp groove (10) is exposed, while the rest is covered with an insulating layer (21).

4. The wiring harness PCB wiring harness terminal and wiring harness connection structure of claim 1, wherein: The cross-sectional area of ​​the conductor (20) is 8 square millimeters.

5. The wiring harness PCB wiring harness terminal and wiring harness connection structure of claim 1, wherein: The conductor pin (11) is fixed to the PCB solder hole (30) by wave soldering.

6. The wiring harness PCB wiring harness terminal and wiring harness connection structure of claim 1, wherein: The wire harness terminal (1) has a crimping groove (10) and four conductor pins (11); the crimping groove (10) is 10 mm wide and 7.7 mm high; the conductor pins (11) are 2.6 mm wide and 3.5 mm high; the material thickness of the wire harness terminal (1) is 1 mm.

7. The wiring harness PCB wiring harness terminal and wiring harness connection structure of claim 6, wherein: The PCB soldering hole (30) is an elliptical hole with a major axis of 3.3 mm and a minor axis of 1.4 mm.

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