Anti-interference automobile high-voltage wire harness

Abstract

The utility model discloses an anti -interference car high -voltage wiring harness, including insulating inner layer, the inner end surface equidistance of insulating inner layer is provided with the wiring harness conductor, and the weaving shield layer is fixedly arranged on the outer end surface of insulating inner layer, and the outer end surface of weaving shield layer is provided with aluminium foil shield layer. The utility model discloses a protection pressure -resisting device is set up, when carrying out pressure -resisting operation to wiring harness, and multiple groups of pressure -resisting snap rings can cooperate with the reinforcing rib cover and form double pressure -resisting structure, and the pressure -resisting snap ring has good elasticity, can improve the deformation recovery performance of wiring harness outside while bearing pressure, and then improve the protection performance to wiring harness, and multiple groups of reinforcing rib cover can reduce the contact area with ground when dragging wiring harness, thereby reduce the abrasion degree of wiring harness main body, improve the service life of wiring harness.

Description

Technical Field

[0001] This utility model relates to the field of automotive wiring harness equipment technology, specifically to an anti-interference automotive high-voltage wiring harness. Background Technology

[0002] High-voltage wiring harnesses are core components of the electrical systems of new energy vehicles. They are responsible for transmitting high-voltage, high-current electrical energy, connecting key components such as batteries, motors, and charging equipment, and ensuring the efficiency, safety, and reliability of vehicle power output and signal transmission.

[0003] For example, the utility model patent disclosed in publication number CN214956062U discloses a high-voltage wiring harness for new energy vehicles, which includes a high-voltage wiring harness body. A conductor is provided at the center of the high-voltage wiring harness body. An insulation layer is provided around the conductor. A polyester tape layer is provided around the insulation layer. A tinned copper wire braided layer is provided around the polyester tape layer. A high-voltage wiring harness shielding layer is provided around the tinned copper wire braided layer. A heat dissipation support structure is provided around the high-voltage wiring harness shielding layer. A waterproof and flame-retardant sheath is provided around the heat dissipation support structure. The overall structure is simple, lightweight, heat-resistant, has a strong load capacity, does not melt, is resistant to chemical corrosion, has high mechanical strength, is resistant to bending and deformation, and provides protection and anti-interference shielding. It is stable and practical, and has certain promotional value.

[0004] Although the aforementioned automotive wiring harness has a certain shielding performance, the heat dissipation support structure uses a polyester tape layer, which has low compressive strength. Furthermore, its shielding effectiveness will significantly decrease after repeated bending, failing to meet the reliability requirements under high-frequency vibration environments. In addition, when the wiring harness is dragged, its exterior is easily damaged, thereby reducing the service life of the wiring harness. Therefore, there is an urgent need for an anti-interference automotive high-voltage wiring harness to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide an anti-interference automotive high-voltage wiring harness to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-interference automotive high-voltage wiring harness, comprising an insulating inner layer, wherein wiring harness conductors are equidistantly arranged on the inner end face of the insulating inner layer.

[0007] A braided shielding layer is fixedly disposed on the outer end face of the insulating inner layer, and an aluminum foil shielding layer is disposed on the outer end face of the braided shielding layer.

[0008] An insulating outer layer is fixedly disposed on the outer end face of the aluminum foil shielding layer;

[0009] A protective pressure-resistant device is fixedly installed on the outer end face of the insulating outer layer.

[0010] Preferably, the protective pressure-resistant device includes a corrugated sleeve, the outer end face of which is provided with reinforcing ribs at equal intervals, and a pressure-resistant retaining ring is fixedly provided on the inner end face of the reinforcing ribs, and tensile fiber strips are provided at equal intervals on the inner end face of the corrugated sleeve.

[0011] Preferably, the pressure-resistant retaining ring is made of TPU and is evenly distributed along the axial direction of the corrugated sheath. The pressure-resistant retaining ring has good pressure resistance and elasticity, which facilitates the rapid pressure resistance and reset of the subsequent wire harness under external pressure, thereby improving the protection performance of the wire harness.

[0012] Preferably, the reinforcing rib and the corrugated sheath are made of PVC, which can effectively improve the external protection and insulation performance of the wire harness.

[0013] Preferably, the tensile fiber strip is made of PE and is spirally distributed radially, which can effectively improve the tensile performance of the wire harness.

[0014] Preferably, the insulating outer layer is made of cross-linked polyethylene, and the braided shielding layer is made of tin-plated copper. The insulating outer layer can improve the insulation performance of the wire harness and also improve the high temperature resistance of the wire harness exterior. The braided shielding layer can effectively improve the shielding performance of the wire harness exterior.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model, by setting up a protective pressure-resistant device, allows multiple sets of pressure-resistant clasps to work with reinforcing ribs to form a double pressure-resistant structure when the wire harness is subjected to pressure. The pressure-resistant clasps have good elasticity, which can improve the deformation recovery performance of the wire harness while bearing pressure, thereby improving the protection performance of the wire harness. In addition, the multiple sets of reinforcing ribs can reduce the contact area with the ground when the wire harness is dragged, thereby reducing the wear of the wire harness body and improving the service life of the wire harness. Attached Figure Description

[0017] Figure 1 This is an exploded view of the main body of this utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the present utility model;

[0019] Figure 3 This is an exploded view of the protective and pressure-resistant device of this utility model;

[0020] Figure 4 This is a schematic diagram of the protective and pressure-resistant device of this utility model.

[0021] In the diagram: 1-Protective pressure-resistant device, 2-Insulating outer layer, 3-Aluminum foil shielding layer, 4-Woven shielding layer, 5-Insulating inner layer, 6-Wire harness conductor, 11-Pressure-resistant retaining ring, 12-Reinforcing rib sleeve, 13-Corrugated sheath, 14-Tension fiber strip. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 This utility model provides an embodiment of an anti-interference automotive high-voltage wiring harness, comprising an inner insulating layer 5, which is cross-linked polyethylene with a thickness of 1.2 mm. Wiring harness conductors 6 are equidistantly arranged on the inner end face of the inner insulating layer 5. The wiring harness conductors 6 are multi-strand tin-plated copper wires twisted together, with a cross-sectional area of ​​35 mm². 2 ;

[0024] A braided shielding layer 4 is fixedly disposed on the outer end face of the insulating inner layer 5, and an aluminum foil shielding layer 3 is disposed on the outer end face of the braided shielding layer 4. The aluminum foil shielding layer 3 is a single-sided aluminum-plated polyester film with a thickness of 0.02mm.

[0025] Insulating outer layer 2 is fixedly disposed on the outer end face of aluminum foil shielding layer 3. Aluminum foil shielding layer 3 is manufactured using a cold rolling process, and the aluminum layer density is ≥2.7g / cm³. 3 It works in conjunction with the fabrication of shielding layer 4;

[0026] Protective pressure-resistant device 1 is fixedly installed on the outer end face of the insulating outer layer 2.

[0027] The protective pressure-resistant device 1 includes a corrugated sleeve 13, with reinforcing ribs 12 equidistantly arranged on the outer end face of the corrugated sleeve 13, and a pressure-resistant retaining ring 11 fixedly arranged on the inner end face of the reinforcing ribs 12. Tensile fiber strips 14 are equidistantly arranged on the inner end face of the corrugated sleeve 13.

[0028] The compression retaining ring 11 is made of TPU and is evenly distributed along the axial direction of the corrugated sheath 13.

[0029] The compression retaining ring 11 is made of Shore A 70° TPU with a thickness of 1mm. Dynamic mechanical analysis (DMA) verified that its elastic recovery rate is >95% in the temperature range of -40℃ to 120℃.

[0030] The aforementioned compression retainer 11 has good compression resistance and elasticity, which facilitates rapid compression resistance and reset of the subsequent wire harness under external pressure, thereby improving the external protection performance of the wire harness.

[0031] The reinforcing rib sleeve 12 and the corrugated sheath 13 are made of PVC, which can effectively improve the external protection and insulation performance of the wire harness.

[0032] The tensile fiber strip 14 is made of PE and is spirally distributed radially, which can effectively improve the tensile strength of the wire harness. The PE fibers are spirally distributed radially along the sheath, with a pitch of 1 / 3 of the sheath circumference, and can withstand 250N of tensile force without deformation.

[0033] The outer insulating layer 2 is made of cross-linked polyethylene with a thickness of 0.6 mm, and the braided shielding layer 4 is made of tin-plated copper. The outer insulating layer 2 can improve the insulation performance of the wire harness and also improve the high temperature resistance of the wire harness exterior. The braided shielding layer 4 can effectively improve the shielding performance of the wire harness exterior.

[0034] Working principle: When the wire harness is subjected to pressure resistance, multiple sets of pressure-resistant retaining rings 11 can work with reinforcing rib sleeves 12 to form a double pressure-resistant structure. The pressure-resistant retaining rings 11 have good elasticity, which can improve the deformation recovery performance of the wire harness while bearing pressure, thereby improving the protection performance of the wire harness. In addition, multiple sets of reinforcing rib sleeves 12 can reduce the contact area with the ground when the wire harness is dragged, thereby reducing the wear of the wire harness body and improving the service life of the wire harness.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-interference automotive high-voltage wiring harness, comprising an insulating inner layer (5), wherein wiring harness conductors (6) are equidistantly arranged on the inner end face of the insulating inner layer (5), characterized in that: A braided shielding layer (4) is fixedly disposed on the outer end face of the insulating inner layer (5), and an aluminum foil shielding layer (3) is disposed on the outer end face of the braided shielding layer (4). An insulating outer layer (2) is fixedly disposed on the outer end face of the aluminum foil shielding layer (3); A protective pressure-resistant device (1) is fixedly installed on the outer end face of the insulating outer layer (2); The protective pressure-resistant device (1) includes a corrugated sleeve (13), with reinforcing ribs (12) equidistantly arranged on the outer end face of the corrugated sleeve (13), and a pressure-resistant retaining ring (11) fixedly arranged on the inner end face of the reinforcing ribs (12), and tensile fiber strips (14) equidistantly arranged on the inner end face of the corrugated sleeve (13).

2. The anti-interference automotive high-voltage wiring harness according to claim 1, characterized in that: The pressure-resistant retaining ring (11) is made of TPU, and the pressure-resistant retaining ring (11) is evenly distributed along the axial direction of the corrugated sheath (13).

3. The anti-interference automotive high-voltage wiring harness according to claim 2, characterized in that: The reinforcing rib sleeve (12) and the corrugated sheath (13) are made of PVC.

4. The anti-interference automotive high-voltage wiring harness according to claim 3, characterized in that: The tensile fiber strip (14) is made of PE and is spirally distributed radially.

5. The anti-interference automotive high-voltage wiring harness according to claim 4, characterized in that: The insulating outer layer (2) is made of cross-linked polyethylene, and the braided shielding layer (4) is made of tin-plated copper.

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