Combined flat wire harness applied to automobile field

Abstract

The utility model relates to the technical field of wire harnesses, and discloses a combined flat wire harness applied to the field of automobiles, which comprises an FPC (flexible printed circuit) module and flat wire harnesses connected to two ends of the FPC module. The FPC module comprises two protective layers and a conductor layer located between the two protective layers, the shape of the conductor layer is matched with the shape of the flat wire harness, and the two sides of the conductor layer are connected with the two protective layers through adhesive layers respectively. Aiming at the problems existing in the prior art, the flat layered conductor structure is designed, the flat layered conductor structure is small in size in use and can be directly arranged on a flat wire loop for use, and the problems of large size, heavy weight and high cost of a copper wire hanging point in the prior art are solved, so that the wiring space of a vehicle body is saved; meanwhile, the conductor layer and the protection layer are connected through the adhesive layer, the manufacturing is simple, the requirement of the hanging section for the rigidity of the loop line diameter section is met, and the design as required can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wiring harness, especially to a combined flat wiring harness applied to the field of automobiles. BACKGROUND

[0002] Traditional automobile wiring harness products generally adopt various specifications of copper conductors + corresponding connector systems, and are formed through principle development, 3D design and various processing processes.

[0003] Part of emerging automobile wiring harness products adopts FFC products + corresponding connector systems: but can only realize one-to-one connection of electrical devices at both ends, cannot realize series-parallel connection and cross transmission between intermediate circuits, thereby leading to single application scene and being difficult to realize scale benefits;

[0004] In addition, the conventional technology adopts copper conductors: large volume, heavy weight and high cost;

[0005] The conventional technology adopts FFC products: can only realize one-to-one connection of electrical devices at both ends, cannot realize series-parallel connection and cross transmission between intermediate circuits

[0006] The conventional technology FPC product can realize series-parallel connection and cross transmission between intermediate circuits, and if only FPC products are used, the cost is relatively high. INVENTION CONTENTS

[0007] The utility model discloses a combined flat wiring harness applied to the field of automobiles, which is proposed to solve the problems in the prior art.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0009] A combined flat wiring harness applied to the field of automobiles, comprising an FPC module and a flat wiring harness connected to both ends of the FPC module.

[0010] The FPC module comprises two protective layers and a conductor layer between the two protective layers, the shape of the conductor layer is adapted to the shape of the flat wiring harness, the conductor layer is connected to the two protective layers through the adhesive layer on both sides respectively, the two sides of the conductor layer are used for conducting electricity, and the two sides of the conductor layer extend to the area outside the two protective layers and form electrical connection with the corresponding flat wiring harness.

[0011] Preferably, the conductor layer is provided with a plurality of conductive ends on both sides, and the plurality of conductive ends on each side of the conductor layer are provided with an insulating layer between each other, the insulating layer is connected to the conductive end through the adhesive layer, and the positions of the plurality of conductive ends are staggered.

[0012] Preferably, the conductor layer is made of copper, aluminum or silver.

[0013] Preferably, the isolation layer is made of one of polyimide, PET, and flame-retardant polyester insulation material.

[0014] Preferably, the protective layer is made of one of polyimide, PET, and flame-retardant polyester insulation material.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The utility model discloses a conductor structure of flat layer design is applied to the flat wire harness in view of the prior art's problem, and when using, the volume is small, can be directly set to the flat wire harness and use, sets up the problem of copper wire hanging point volume, weight, cost of high -power of prior art, thereby saves the space problem of vehicle body wiring, utilizes the respective advantage of traditional wire harness, FFC and FPC, not only can reach the purpose of reducing product cost, but also can realize the goal of miniaturization and light weight, for new energy automobile, the light weight of automobile also promotes the endurance mileage of automobile to a certain extent, simultaneously, the conductor layer is connected with the protective layer through the adhesive layer, and the manufacture is simple, solves the hard requirement of the hanging section to the loop line diameter section, can be designed as needed, under the guarantee electrical property's requirement condition, carries out the lean design, avoids the quality surplus, in addition, can design the conductor structure of this product in advance according to different loop, truly realizes the modular design, and the change cost is low, and after product configuration changes, it is convenient to reform. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Embodiment 1 of the combined flat wire harness applied to the automobile field of the utility model shows a schematic diagram;

[0018] Figure 2 Embodiment 1 of the combined flat wire harness applied to the automobile field of the utility model shows a schematic diagram of FPC module layer structure.

[0019] Figure 3 Embodiment 2 of the combined flat wire harness applied to the automobile field of the utility model shows a schematic diagram;

[0020] Figure 4 Embodiment 2 of the combined flat wire harness applied to the automobile field of the utility model shows a schematic diagram of FPC module layer structure.

[0021] In the drawing: 1, protective layer, 2, conductor layer, 3, adhesive layer, 4, conductive end, 5, flat wire harness, 6, access end, 7, isolation layer. DETAILED DESCRIPTION

[0022] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0023] Embodiment 1

[0024] With reference to Figure 1 And Figure 2 A combined flat wire harness 5 applied to the field of automobiles, comprising an FPC module and a flat wire harness 5 connected to both ends of the FPC module;

[0025] The FPC module comprises two protective layers 1 and a conductor layer 2 located between the two protective layers 1, the shape of the conductor layer 2 is adapted to the shape of the flat wire harness 5, the conductor layer 2 is connected to the two protective layers 1 through the adhesive layer 3 on both sides respectively, the two sides of the conductor layer 2 are used for conducting electricity, and the two sides of the conductor layer 2 are extended to the area outside the two protective layers 1, and form electrical connection with the corresponding flat wire harness 5.

[0026] In this embodiment, one conductive end 4 is arranged on each side of the conductor layer 2, and this embodiment is for a loop in which each input signal corresponds to a unique output signal, and the two conductive ends 4 are connected to the loop for use, and the connection mode can adopt the tin soldering mode.

[0027] In this embodiment, the material of the conductor layer 2 is copper.

[0028] In other embodiments, it can also be aluminum.

[0029] In this embodiment, the material of the protective layer 1 is polyimide.

[0030] In other embodiments, it can also be PET or flame-retardant polyester insulation material.

[0031] It should be noted that the polyester film (PET) has good electrical insulation performance, mechanical properties and weather resistance. Its cost is relatively low, and it has good processing performance, easy to shape and cut, and can meet the insulation needs of most conventional electronic equipment. Moreover, the flexibility of PET material is good, which can meet the bending and folding requirements of FFC in different scenes.

[0032] It can be widely used in various electronic products, such as the connecting wires inside mobile phones, computers, tablets and other equipment, and some electronic equipment with strict cost control.

[0033] If polyimide film (PI) is used, it is a high-performance insulating material with excellent high-temperature resistance, chemical stability and mechanical strength. It can work stably in high-temperature environment for a long time, and can resist the corrosion of various chemicals. In addition, the insulation resistance of polyimide is very high, which can provide reliable insulation protection.

[0034] It can be used in electronic devices with high working temperature requirements and harsh environments, such as aerospace equipment, high-end industrial equipment, automotive electronics, etc. In these fields, FFC needs to maintain stable performance under harsh conditions such as high temperature, high vibration and strong corrosion. The FFC with polyimide insulating material can meet these requirements.

[0035] If a flame-retardant polyester insulating material is used, in addition to some properties of ordinary polyester materials, it also has good flame-retardant performance, which can prevent the spread of fire to a certain extent and improve the safety of electronic equipment. In some places with high fire prevention requirements, such as household appliances and office equipment, FFC using flame-retardant polyester insulating material can reduce the risk of fire.

[0036] It is suitable for various electronic devices that may have fire hazards, which can improve the safety level of the equipment while ensuring the electrical connection performance.

[0037] Example 2

[0038] Reference Figure 2 and Figure 3 A combined flat cable 5 applied in the field of automobile, comprising a FPC module and a flat cable 5 connected to both ends of the FPC module;

[0039] The FPC module comprises two protective layers 1 and a conductor layer 2 between the two protective layers 1, the shape of the conductor layer 2 is adapted to the shape of the flat cable 5, the conductor layer 2 is connected to the two protective layers 1 through the adhesive layer 3 on both sides respectively, the two sides of the conductor layer 2 are used for conduction, and the two sides of the conductor layer 2 extend to the area between the two protective layers 1, and form electrical connection with the corresponding flat cable 5.

[0040] In this embodiment, three conductive terminals 4 are arranged on one side of the conductor layer 2, and four conductive terminals 4 are arranged on the other side, and the conductive terminals 4 are connected by the isolation layer 7 between each other, the isolation layer 7 is connected with the conductive terminals 4 by adhesive. This embodiment is for a loop with multiple input signals corresponding to multiple output signals, and multiple conductive terminals 4 are connected to the loop for use. The connection mode can adopt the tin soldering mode, and the flat cable 5 has multiple access terminals 6 of the conductive terminals 4. It should be noted that the connection mode of the conductive terminals 4 is as shown in Figure 2 Figure 3 ​The conductive end 4 and the conductor layer 2 are only shown in a structural state, and the outermost ends of all the conductive ends 4 tend to be in the same plane, for the connection of the flat wire harness 5.

[0041] In other embodiments, one conductive end 4 can be arranged on one side of the conductor layer 2, and multiple conductive ends 4 can be arranged on the other side, for a loop corresponding to multiple output signals for one input signal.

[0042] In the embodiment, the conductor layer 2 is made of copper.

[0043] In the embodiment, the isolation layer 7 is made of polyimide.

[0044] In other embodiments, the isolation layer 7 can also be made of PET or flame-retardant polyester insulation material.

[0045] In the embodiment, the protective layer 1 is made of polyimide.

[0046] In summary, the conductor structure of the flat layer design is designed according to the problems of the prior art, the FFC+FPC combined flat wire product replaces the traditional copper wire harness product, the FFC undertakes the main part of the wire harness due to the cost advantage, the FPC only undertakes the part of the loop switching due to the high price, the FFC and the FPC are connected by crimping, welding or 3D printing technology, in use, the volume is small, and the flat wire loop can be directly set for use, the existing technology copper conductor hanging point volume, weight, cost problem is solved, thereby the space problem of the vehicle body wiring is saved, meanwhile, the conductor layer 2 and the protective layer 1 are connected through the adhesive layer 3, the manufacturing is simple, the hard requirement of the loop line diameter section to the hanging section is solved, the on-demand design can be achieved, the lean design is carried out under the condition of guaranteeing the electrical performance requirement, the quality surplus is avoided, in addition, the conductor structure of the product can be designed according to different loops in advance, the modular design is truly realized, the change cost is low, and the product configuration is changed and then the product is easily modified.

[0047] Of course, in actual use, the product can also integrate the traditional copper wire harness connection output input interface to form a composite wire harness structure, as shown in Figure 3 .

[0048] The above only describes the preferred embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model carries out equivalent replacement or change, all should be covered in the protection scope of the utility model.

Claims

1. A combined flat wiring harness for use in the automotive industry, characterized in that: Includes the FPC module and the flat wire harnesses connected to both ends of the FPC module; The FPC module includes two protective layers and a conductor layer located between the two protective layers. The shape of the conductor layer is adapted to the shape of the flat wire harness. Both sides of the conductor layer are connected to the two protective layers respectively through adhesive layers. Both sides of the conductor layer are used for conduction, and both sides of the conductor layer extend beyond the area between the two protective layers and form an electrical connection with the corresponding flat wire harness.

2. The combined flat wiring harness for use in the automotive field according to claim 1, characterized in that: The conductor layer has several conductive ends on both sides, and each pair of conductive ends on each side of the conductor layer is provided with an isolation layer. The isolation layer is connected to the conductive ends by an adhesive layer, and the positions of the conductive ends are staggered.

3. The combined flat wiring harness for use in the automotive field according to claim 1, characterized in that: The conductor layer is made of copper, aluminum, or silver.

4. A combined flat wiring harness for use in the automotive field according to claim 2, characterized in that: The insulating layer is made of one of the following materials: polyimide, PET, or flame-retardant polyester insulation material.

5. A combined flat wiring harness for use in the automotive field according to claim 1, characterized in that: The protective layer is made of one of the following materials: polyimide, PET, or flame-retardant polyester insulation material.

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