Electromagnetic shielding vehicle-mounted wire harness

Abstract

The utility model relates to the technical field of vehicle-mounted wire harnesses, in particular to an electromagnetic shielding vehicle-mounted wire harness, which comprises a wire main body, the wire main body comprises a battery cell, the outer wall of the battery cell is wrapped with a first insulating sheath, the outer wall of the first insulating sheath is wrapped with a single woven shielding layer, and the outer wall of the single woven shielding layer is wrapped with a second insulating sheath. The outer wall of the single braided shielding layer is wrapped with a second insulating sheath, and the single braided shielding layer is used for shielding low-frequency interference of the battery cell; the contact piece terminals are electrically connected to the two ends of the electric wire main body respectively; and the shielding sheath wraps the outer part of the electric wire main body, and the shielding sheath is used for high-frequency interference shielding of the electric wire main body. According to the utility model, the single braided shielding layer and the rubber sheath are wrapped outside the traditional wire, so that the low-frequency anti-interference performance of the wire can be improved, and meanwhile, the shielding sheath is jointly wrapped outside the plurality of wires, so that the high-frequency anti-interference protection of the wire is further realized.

Description

Technical Field

[0001] This utility model relates to the field of vehicle wiring harness technology, specifically to an electromagnetically shielded vehicle wiring harness. Background Technology

[0002] Vehicle wiring harnesses are the main network of automotive circuits. Without wiring harnesses, there would be no automotive circuits. A wiring harness is a component that connects circuits by crimping copper contact terminals with wires and cables, and then molding an insulator or adding an outer metal shell.

[0003] Existing vehicle wiring harnesses have several wires distributed between the contact terminals, and the wires are only covered with insulating rubber, resulting in poor electromagnetic shielding. In addition, although the external use of telescopic sleeves can accommodate multiple wires, it makes the contact between the wires relatively tight, which further leads to electromagnetic interference between adjacent wires. Consequently, the signal is prone to errors during use due to electromagnetic signal interference. Utility Model Content

[0004] The purpose of this invention is to provide an electromagnetically shielded vehicle wiring harness to solve the problem of poor electromagnetic interference shielding performance between adjacent wires mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electromagnetically shielded vehicle wiring harness, comprising:

[0006] The wire body includes a battery core, the outer wall of the battery core is wrapped with a first insulating sheath, the outer wall of the first insulating sheath is wrapped with a single braided shielding layer, the outer wall of the single braided shielding layer is wrapped with a second insulating sheath, and the single braided shielding layer is used for low-frequency interference shielding of the battery core.

[0007] Contact terminals, which are electrically connected to both ends of the wire body respectively;

[0008] A shielding sleeve is wrapped around the outside of the wire body and is used to shield the wire body from high-frequency interference.

[0009] Preferably, the single braided shielding layer is a tin-plated copper wire braided mesh structure, and the coverage of the single braided shielding layer is not less than 5%.

[0010] Preferably, the first insulating sleeve and the second insulating sleeve are made of the same material, and the first insulating sleeve and the second insulating sleeve are made of either polyvinyl chloride or neoprene rubber.

[0011] Preferably, the shielding sleeve includes a first protective layer and a second protective layer, and the first and second protective layers are integrally wrapped around the outside of the shielding aluminum foil.

[0012] Preferably, the second protective layer has a hook-shaped rough surface fixedly bonded to the side away from the shielding aluminum foil, and the first protective layer has a ring-shaped fiber surface fixedly bonded to the side away from the shielding aluminum foil.

[0013] Preferably, the first protective layer and the annular fiber surface are connected by Velcro, the edge of the hook-shaped surface has a continuous concave-convex structure, and the width of the hook-shaped surface is one-quarter of the width of the first protective layer.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By covering the outside of a traditional wire with a single braided shielding layer and a rubber sheath, this utility model can improve the low-frequency anti-interference performance of the wire. At the same time, by wrapping multiple wires together with a shielding sheath, it can further protect the wires from high-frequency anti-interference, thereby effectively improving the electromagnetic interference shielding performance of the wire. Moreover, the overall cost of use is low. In addition, the shielding sheath adopts a Velcro-type fixing and adhesive structure, which can further tighten multiple wires and achieve the effect of neat and beautiful wire harness. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the contact terminal distribution structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the stepped distribution structure of the wire cross-section of this utility model.

[0018] Figure 4 This is a schematic diagram of the explosion structure of the shielding sleeve of this utility model.

[0019] In the diagram: 1. Main body of the wire; 11. Battery core; 12. First insulating sheath; 13. Single braided shielding layer; 14. Second insulating sheath; 2. Contact terminal; 3. Shielding sheath; 31. First protective layer; 32. Shielding aluminum foil; 33. Second protective layer; 34. Hook-shaped rough surface; 35. Annular fiber surface. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4This utility model provides an embodiment of an electromagnetically shielded vehicle-mounted wiring harness, comprising a wire body 1 and contact terminals 2 respectively disposed at both ends of the wire body 1 and electrically connected to the wire body 1. The wire body 1 includes a battery core 11, the outer wall of which is wrapped with a first insulating sheath 12. The outer wall of the first insulating sheath 12 is wrapped with a single braided shielding layer 13, and the outer wall of the single braided shielding layer 13 is wrapped with a second insulating sheath 14. The single braided shielding layer 13 is used for low-frequency interference shielding of the battery core 11. The main feature of the single braided shielding layer 13 is its simple structure, consisting of a single layer of braided mesh, and it is typically used for external shielding of cables to prevent external electromagnetic interference from affecting the internal signals of the cable.

[0022] Specifically, the single braided shielding layer 13 is a tin-plated copper wire braided mesh structure, and the coverage of the single braided shielding layer 13 is not less than 85%. Its tight coverage ensures its shielding performance. The single braided shielding layer 13 further simplifies the wire harness production process, reduces wire costs, and reduces equipment investment. The first insulating sheath 12 and the second insulating sheath 14 are made of the same material. The first insulating sheath 12 and the second insulating sheath 14 are made of either polyvinyl chloride or neoprene rubber. Polyvinyl chloride has good electrical insulation, mechanical properties, and thermoplasticity, long service life, and low price. Neoprene rubber has excellent heat resistance, oil resistance, acid and alkali resistance, and also has a good barrier effect against oxygen, gas, and water vapor.

[0023] A shielding sleeve 3 is wrapped around the outside of the main body 1 of the wire. The shielding sleeve 3 is used for high-frequency interference shielding of the main body 1 of the wire. Specifically, the shielding sleeve 3 includes a first protective layer 31 and a second protective layer 33. The first protective layer 31 and the second protective layer 33 are integrated and wrapped around the outside of the shielding aluminum foil 32. The shielding aluminum foil 32 uses aluminum foil with good conductivity to construct a "metal isolation layer" to separate the electromagnetic field between the shielding medium and the wiring, preventing it from interfering with or leaking to the surrounding area of ​​the wiring. The aluminum foil has a dense metal structure and good barrier properties, which can effectively reflect external electromagnetic interference and provide a relatively comprehensive shielding coverage. The shielding effect on high-frequency electromagnetic interference is particularly significant. The first protective layer 31 and the second protective layer 33 are made of polyester film, which is a high-strength, high-transparency, and durable plastic film. While protecting the shielding aluminum foil 32, it also improves its service life.

[0024] Furthermore, a hook-shaped textured surface 34 is fixedly bonded to the side of the second protective layer 33 away from the shielding aluminum foil 32, and an annular fiber surface 35 is fixedly bonded to the side of the first protective layer 31 away from the shielding aluminum foil 32. The first protective layer 31 and the annular fiber surface 35 are connected to each other in a Velcro-like manner. The edge of the hook-shaped textured surface 34 has a continuous concave-convex structure, and the width of the hook-shaped textured surface 34 is one-quarter of the width of the first protective layer 31. In use, it is wrapped around the outside of the wire body 1. The hook-shaped textured surface 34 and the annular fiber surface 35 are further bonded together to make it tightly wrapped, thereby tightening and storing the wire body 1 while further improving its external electromagnetic interference resistance. The concave-convex structure of the hook-shaped textured surface 34 means that there is no adhesive function between its recessed part and the annular fiber surface 35, which facilitates the pulling and separation of the two, while ensuring the adhesive effect of its edge and avoiding the loosening and falling off of the adhesive due to edge protrusion and external adhesion.

[0025] Working Principle: The wire body 1 and contact terminal 2 used in this application are both commercially available products. Their principles and connection methods are existing technologies well known to those skilled in the art, and therefore will not be elaborated here. When using this utility model, the shielding sleeve 3 is first wrapped around the outside of the wire body 1, and the wrapping is made tight. Then, the hook-shaped rough surface 34 and the annular fiber surface 35 are fixed and bonded to each other, which can bind and fix the wire body 1. At the same time, by wrapping a single braided shielding layer and a rubber sheath around the outside of the traditional wire, the low-frequency anti-interference performance of the wire can be improved. At the same time, wrapping the shielding sleeve around the outside of multiple wires together further provides high-frequency anti-interference protection for the wire, thereby effectively improving the electromagnetic interference shielding performance of the wire, and the overall cost of use is low.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An electromagnetically shielded vehicle wiring harness, characterized in that, include: The wire body (1) includes a battery core (11), the outer wall of the battery core (11) is wrapped with a first insulating sheath (12), the outer wall of the first insulating sheath (12) is wrapped with a single braided shielding layer (13), the outer wall of the single braided shielding layer (13) is wrapped with a second insulating sheath (14), and the single braided shielding layer (13) is used for low-frequency interference shielding of the battery core (11); Contact terminals (2), which are electrically connected to both ends of the wire body (1); The shielding sleeve (3) is wrapped around the outside of the wire body (1). The shielding sleeve (3) includes a first protective layer (31) and a second protective layer (33). The first protective layer (31) and the second protective layer (33) are integrated and wrapped around the outside of the shielding aluminum foil (32). The material of the first protective layer (31) and the second protective layer (33) is polyester film. The shielding sleeve (3) is used for high-frequency interference shielding of the wire body (1).

2. The electromagnetic shielded vehicle wiring harness according to claim 1, characterized in that: The single braided shielding layer (13) is a tin-plated copper wire braided mesh structure, and the coverage of the single braided shielding layer (13) is not less than 85%.

3. The electromagnetic shielded vehicle wiring harness according to claim 1, characterized in that: The first insulating sleeve (12) and the second insulating sleeve (14) are made of the same material, and the first insulating sleeve (12) and the second insulating sleeve (14) are made of either polyvinyl chloride or chloroprene rubber.

4. The electromagnetic shielded vehicle wiring harness according to claim 1, characterized in that: The second protective layer (33) has a hook-shaped textured surface (34) fixedly bonded to the side away from the shielding aluminum foil (32), and the first protective layer (31) has an annular fiber surface (35) fixedly bonded to the side away from the shielding aluminum foil (32).

5. The electromagnetic shielded vehicle wiring harness according to claim 4, characterized in that: The first protective layer (31) and the annular fiber surface (35) are connected by Velcro, and the edge of the hook-shaped surface (34) has a continuous concave-convex structure, and the width of the hook-shaped surface (34) is one-quarter of the width of the first protective layer (31).

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