A segmented wire harness connector based on FPC

Abstract

This utility model discloses a segmented wire harness connector based on an FPC (Flexible Printed Circuit) system, including a first connector and a second connector that are interconnected. A first wire harness is disposed on the side of the first connector away from the second connector, and the end of the first wire harness is soldered and fixed to the FPC board. The other end of the FPC board is connected to the surface of the first connector via SMT (Surface Mount Technology). A protective layer is provided on the soldering area between the first wire harness and the FPC board, and on the surface of the FPC board and the first connector. A second wire harness is disposed on the side of the second connector away from the first connector, and the second wire harness is crimped and fixed to the second connector. This utility model segments the wire harness, allowing for automated assembly of the shorter sections, thus improving production efficiency. The connection between the wire and the SMT connector replaces the original connection scheme between the wire harness and the housing terminal, reducing the development of multi-line housing terminals and achieving a smaller footprint than housing terminals.

Description

Technical Field

[0001] This utility model relates to the field of mechanical connector technology, and in particular to a segmented wire harness connector based on FPC. Background Technology

[0002] Electrical and electronic devices are essential components of automobiles, and their performance directly impacts a vehicle's economy, reliability, and safety. In today's era of rapid scientific and technological advancement, higher demands are placed on automotive performance, leading to the extensive use of electronic devices in modern cars. The application of electronic devices has not only improved the performance and level of traditional vehicles but has also expanded the application areas of electronic technology, ushering in the current era of automotive electronics. The degree of electrification in a car has become an important indicator of its technological sophistication.

[0003] Automotive wiring harnesses are important components that connect various electrical and electronic devices in a vehicle, transmitting electrical signals between power supplies, switches, electrical appliances, and electronic devices. Current automotive wiring harnesses are formed by welding FPC boards and multiple wire harnesses together, and then injection molding them into a mold to create an integrated injection-molded wiring harness connector. Existing connectors use a connection scheme between the wire harness and the plug-in terminal, which adds extra development costs to the plug-in terminal. Utility Model Content

[0004] To address the aforementioned technical problems, a segmented wire harness connector based on FPC is provided.

[0005] To achieve the above objectives, this utility model discloses a segmented wire harness connector based on an FPC, including a first connector and a second connector that are interconnected and mated together. A first wire harness is disposed on the side of the first connector away from the second connector. The end of the first wire harness is soldered and fixed to the FPC board. The other end of the FPC board is connected to the surface of the first connector via SMT mounting. A protective layer is disposed on the soldering area between the first wire harness and the FPC board and the surface mount area between the FPC board and the first connector. A second wire harness is disposed on the side of the second connector away from the first connector, and the second wire harness is crimped and fixed to the second connector.

[0006] Furthermore, the first wire harness is welded to the FPC board in a single row, with the center distance between each welding point being 3mm to 4mm and the welding point width being 2mm.

[0007] Furthermore, the first wire harness is welded to the FPC board in a double row, with the center distance between each welding point being 2mm to 2.5mm and the welding point width being 2mm.

[0008] Furthermore, the FPC board has a back reinforcement sheet at the bottom with a thickness of 0.1mm to 0.6mm, and a front reinforcement sheet at the top with a thickness of 0.05mm to 0.3mm.

[0009] Furthermore, the front reinforcing plate has a first opening at equal intervals on one side near the first wire harness to connect to the first wire harness, and a second opening on the other side of the front reinforcing plate to connect to the first connector.

[0010] Furthermore, the protective layer adopts a cured adhesive structure, and the width of the protective layer is 3mm to 6mm.

[0011] Furthermore, an injection-molded encapsulation structure is provided around the first connector, the FPC board, and the end of the first wire harness that is fastened by welding.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a segmented wire harness connector based on FPC, which segments the wire harness and automates the assembly of the shorter part, thereby improving production efficiency. The connection between the wire and the SMT mounting connector replaces the original connection scheme between the wire harness and the plug-in terminal, which reduces the development of multi-line plug-in terminals and also achieves a smaller space than plug-in terminals. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0015] Figure 2 This is a schematic diagram of the front reinforcing sheet and the back reinforcing sheet of this utility model.

[0016] Figure 3 This is a schematic diagram of the welding area in Embodiment 2 of this utility model.

[0017] Figure 4 This is a schematic diagram of the injection-molded encapsulation structure of this utility model.

[0018] In the figure: 1 is the first wire harness; 2 is the first connector; 3 is the second connector; 4 is the second wire harness; 5 is the FPC board; 6 is the protective layer; 7 is the front reinforcing sheet; 71 is the first opening; 72 is the second opening; 8 is the back reinforcing sheet; 9 is the injection molding encapsulation structure. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Embodiment 1 of this utility model, as follows: Figure 1 and Figure 2 As shown, in a preferred embodiment of this invention, the wire harness connector consists of three parts: a short wire harness of the first wire harness, an FPC board and a first connector, and a second connector and a second wire harness, realizing a split structure for the overall wire harness. The first connector is a female connector, and the second connector is a male connector. The first wire harness 1 is located on the side of the first connector 2 away from the second connector 3, wherein the first wire harness is a short wire harness. The circular wire at the end of the first wire harness 1 is fixed to the FPC board 5 by soldering. The other end of the FPC board 5 is connected to the surface of the first connector 2 by SMT mounting, wherein the first connector is an SMT... The device ensures that it can be mounted to the FPC circuit board. The soldering area between the first wire harness 1 and the FPC board 5 and the surface of the mounting area between the FPC board 5 and the first connector 2 are provided with a protective layer 6. The second connector 3 is provided with a second wire harness 4 on the side away from the first connector 2. The second wire harness 4 and the second connector 3 are crimped and fixed. The wire harness is segmented, and the shorter part is automated for assembly, which improves production efficiency. The connection between the wire and the SMT mounting connector replaces the original connection scheme between the wire harness and the shell terminal. This reduces the development of multi-line shell terminals and also achieves a smaller space than the shell terminals.

[0021] The first wire harness 1 and the FPC board 5 are welded in a single row. The center distance between each welding point is 3mm to 4mm and the width of the welding point is 2mm. The single-row welding method makes the welding operation easier and improves production efficiency.

[0022] The bottom of the FPC board 5 is provided with a back reinforcement plate 8, which is attached to the back of the FPC board without any openings. Its thickness is 0.1mm to 0.6mm. In order to ensure more reliable soldering of the circuit board and to give the SMT assembly better flatness and stability, the top of the FPC board 5 is provided with a front reinforcement plate 7, which is 0.05mm to 0.3mm thick. The front reinforcement plate 7 has a first opening 71 with equal spacing on the side near the first wire harness 1 to connect to the first wire harness 1. The other side of the front reinforcement plate 7 has a second opening 72 to connect to the first connector 2. When the product is wrapped in high-temperature injection molding or other methods, the surface circuit is protected.

[0023] The protective layer 6 adopts a curable adhesive structure. The width of the protective layer 6 is 3mm to 6mm. The protective adhesive is used to cover the welding area between the first wire harness and the FPC board and the patch area between the FPC board and the first connector. The adhesive can be cured by UV light or heat baking, and adheres to the solder feet to increase the tensile strength and stability of the components at the welding position. At the same time, it increases the protection of the solder feet and prevents the solder feet from cracking, which could lead to electrical failure of the product.

[0024] The first connector 2, the FPC board 5, and the end of the first wire harness 1, which is fastened by welding, are provided with an injection-molded encapsulation structure to increase the dustproof and waterproof effect.

[0025] Embodiment two of this utility model, such as Figure 3 As shown, the first wire harness 1 and the FPC board 5 are welded in a double row. The center distance between each welding point is 2mm to 2.5mm and the width of the welding point is 2mm. Compared with the single-row welding method in Embodiment 1, the double-row welding reduces the width of the circuit board in the welding area between the first wire harness and the FPC board, thereby reducing production costs.

[0026] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0027] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A segmented wire harness connector based on FPC, comprising a first connector (2) and a second connector (3) interconnected and mating, characterized in that, A first wire harness (1) is provided on the side of the first connector (2) away from the second connector (3). The end of the first wire harness (1) is welded and fixed to the FPC board (5). The other end of the FPC board (5) is connected to the surface of the first connector (2) by SMT mounting. A protective layer (6) is provided on the surface of the welding area between the first wire harness (1) and the FPC board (5) and the surface mount area between the FPC board (5) and the first connector (2). A second wire harness (4) is provided on the side of the second connector (3) away from the first connector (2). The second wire harness (4) is crimped and fixed to the second connector (3).

2. A segmented wire harness connector based on FPC according to claim 1, characterized in that, The first wire harness (1) and the FPC board (5) are welded in a single row, with the center distance of each welding point being 3mm to 4mm and the width of the welding point being 2mm.

3. A segmented wire harness connector based on FPC according to claim 1, characterized in that, The first wire harness (1) and the FPC board (5) are welded in a double row, with the center distance of each welding point being 2mm to 2.5mm and the width of the welding point being 2mm.

4. A segmented wire harness connector based on FPC according to claim 1, characterized in that, The FPC board (5) has a back reinforcement plate (8) at the bottom with a thickness of 0.1mm to 0.6mm, and a front reinforcement plate (7) at the top with a thickness of 0.05mm to 0.3mm.

5. A segmented wire harness connector based on FPC according to claim 4, characterized in that, The front reinforcing plate (7) has a first opening (71) with equal spacing on one side near the first wire harness (1) to connect to the first wire harness (1), and a second opening (72) on the other side of the front reinforcing plate (7) to connect to the first connector (2).

6. A segmented wire harness connector based on FPC according to claim 1, characterized in that, The protective layer (6) adopts a cured adhesive structure, and the width of the protective layer (6) is 3mm to 6mm.

7. A segmented wire harness connector based on FPC according to claim 1, characterized in that, The first connector (2), the FPC board (5), and the end of the first wire harness (1) fastened by welding are provided with an injection-molded encapsulation structure (9).

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