Bending-resistant wire harness structure

Abstract

The utility model relates to the technical field of automobile wire harnesses, and particularly discloses an anti-bending wire harness structure, which comprises a wear-resistant layer and a plurality of conductive wire cores arranged in the wear-resistant layer, and an insulating layer is arranged on the outer side of each conductive wire core; an anti-bending layer is arranged between the wear-resistant layer and the plurality of groups of insulating layers, the anti-bending layer comprises a first reinforcing net layer and a second reinforcing net layer, and a plurality of groups of wire core reinforcing parts are arranged between the first reinforcing net layer and the second reinforcing net layer; the cable further comprises a reinforcing wire core installed in the center of the wear-resistant layer, and a reinforcing unit is arranged between the reinforcing wire core and the anti-bending layer. According to the wire harness, the anti-bending layers can be more stable, so that the stability of the internal structure of the wire harness can be improved, the situation that the anti-bending layers in the wire harness are misplaced under the condition of long-time use is reduced, the abrasion of wires and connectors in the wire harness is reduced, the reliability is improved, the failure rate is reduced, and the service life of the wire harness can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile wiring harness, concretely is a kind of wiring harness structure of bending resistance. BACKGROUND

[0002] With the rapid development of automobile industry, the complexity and integration of automobile electronic system are continuously improved, and wiring harness, as the core component of automobile electrical system, undertakes the key task of transmitting electric energy and signal. Automobile wiring harness is usually composed of wires, insulation layer, connector, protective sleeve and other parts. Wire is responsible for transmitting electric energy and signal, insulation layer is used to prevent short circuit and electrical interference, and protective sleeve is used to resist external mechanical damage and chemical corrosion.

[0003] In order to prevent automobile wiring harness from being damaged by exposure to the outside world, a layer of wiring harness sleeve is usually installed on the outer surface of the wire to protect the wire. Most of the current wiring harness sleeves are a layer of plastic tube. When the wiring harness sleeve is subjected to external extrusion or excessive bending, the surface of the wiring harness sleeve will be damaged, reducing the protection of the internal wire. In order to solve the above technical problems, the prior art proposes related patents, such as the Chinese patent with the name of "Automobile wiring harness sleeve with bending resistance" and the authorization announcement number of CN218005780U. The above patent discloses an automobile wiring harness sleeve with bending resistance, which comprises an inner tube, a connecting ring is fixedly installed on the outer surface of the inner tube, an outer tube is fixedly installed on the outer side of the connecting ring, an outer ring is fixedly installed on the outer surface of the outer tube; a rubber layer is fixedly installed on the inner wall of the connecting ring, a through hole is formed in the inside of the rubber layer, a reinforcing rib is inserted into the through hole, and a limiting ring is fixedly installed on the outer surface of the reinforcing rib.

[0004] The automobile wiring harness sleeve in the above patent passes the wire through the inner tube, thereby preventing the entire sleeve from being extruded and deformed. In the prior art such as the above patent, by adding a reinforcing rib, the wear resistance of the wiring harness can be increased to a certain extent. However, after long-term use, the reinforcing rib may be misaligned, which will affect the bending resistance of the wiring harness, and there is a certain deficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a wiring harness structure with bending resistance to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: A kind of harness structure of bending resistance, including wear layer and multiple conductive wire core being installed in wear layer interior, each conductive wire core outside is provided with insulating layer;Wear layer and multiple insulating layers between are provided with bending resistance layer, the bending resistance layer includes first reinforcing net layer and second reinforcing net layer, and multiple wire core reinforcing parts are provided between first reinforcing net layer and second reinforcing net layer;It further includes reinforcing wire core being installed in the center position of wear layer, reinforcing unit is provided between reinforcing wire core and bending resistance layer.

[0007] Further, the reinforcing unit includes sleeve provided on the outside of the reinforcing wire core, multiple support plates are provided between the sleeve and the second reinforcing net layer, and a reinforcing plate is further provided between each support plate and the insulating layer.

[0008] Further, a support ring is installed on the outside of the sleeve, and the support ring is arranged between the multiple support plates.

[0009] Further, a solid material is provided between the support ring and the sleeve.

[0010] Further, the wire core reinforcing part includes a main wire, and multiple steel wires are wound around the main wire.

[0011] Further, a filling layer is further provided between the first reinforcing net layer and the second reinforcing net layer.

[0012] Further, a constraint layer is filled between the support ring and the multiple insulating layers.

[0013] Further, a flame-retardant layer is filled between the second reinforcing net layer and the reinforcing plate.

[0014] Further, a constant temperature layer is provided between the wear layer and the first reinforcing net layer.

[0015] Further, a corrosion-resistant layer is provided between the constant temperature layer and the wear layer.

[0016] Compared with the prior art, the utility model has the beneficial effects that: the harness structure of bending resistance, through the cooperation between wear layer, insulating layer, bending resistance layer, first reinforcing layer, second reinforcing layer, reinforcing wire core and the like, through the arrangement of reinforcing unit, can make the bending resistance layer more stable, so as to improve the stability of the internal structure of the harness, reduce the dislocation of the bending resistance layer in the harness under the condition of long time use, reduce the wear of the internal wire and connector of the harness, improve reliability, reduce failure rate, so as to improve the service life of the harness. BRIEF DESCRIPTION OF DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Fig. 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Fig. 2 A partial structural schematic diagram provided for an embodiment of this utility model;

[0020] Fig. 3 This is a schematic cross-sectional view of the overall structure of an embodiment of the present utility model.

[0021] Explanation of reference numerals in the attached diagram: 1. Wear-resistant layer; 2. Corrosion-resistant layer; 3. Temperature-regulating layer; 4. First reinforcing mesh layer; 5. Filling layer; 6. Core reinforcement section; 61. Main conductor; 62. Steel wire; 7. Second reinforcing mesh layer; 8. Insulation layer; 9. Conductive core; 10. Flame-retardant layer; 11. Reinforcing core; 12. Sleeve; 13. Solid material; 14. Support ring; 15. Constraint layer; 16. Support plate; 17. Reinforcing plate. 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 Figs. 1-3 This utility model provides a technical solution: a bending-resistant wire harness structure, including a wear-resistant layer 1 and multiple conductive cores 9 installed inside the wear-resistant layer 1. Specifically, the wear-resistant layer 1 is made of polyamide. The presence of the wear-resistant layer 1 improves the wear resistance of the wire harness, prevents the wire harness from being worn by the surrounding environment during use, and increases the service life of this utility model. Preferably, the conductive cores 9 are made of copper, which has excellent electrical and thermal conductivity, good flexibility, and is easy to process. Each conductive core 9 has an insulation layer 8 on its outer side, wherein the insulation layer 8 is made of polypropylene reinforced fiber material. Polypropylene reinforced fiber is used in the production of clothing and decoration and some industrial filament products. Polypropylene reinforced fiber has good luster, soft feel, good drape, low density, and good insulation properties.

[0024] The anti-bending layer is arranged between the wear-resistant layer 1 and the plurality of insulation layers 8, and the anti-bending layer comprises the first reinforcing net layer 4 and the second reinforcing net layer 7, and a plurality of wire core reinforcing parts 6 are arranged between the first reinforcing net layer 4 and the second reinforcing net layer 7. Specifically, by arranging the first reinforcing net layer 4 and the second reinforcing net layer 7, the mechanical strength can be enhanced, the wire harness can be prevented from being damaged due to stretching, extrusion or vibration during installation and use, the wire harness can be helped to maintain a specific shape, installation and wiring are facilitated, and the risk of wear and breakage of the wire harness due to vibration during vehicle driving is reduced. The reinforcing wire core 11 is arranged at the center position of the wear-resistant layer 1, and a reinforcing unit is arranged between the reinforcing wire core 11 and the anti-bending layer. By arranging the reinforcing unit, the anti-bending layer can be more stable, so that the stability of the internal structure of the wire harness can be improved, the dislocation of the anti-bending layer in the wire harness can be reduced in the case of long-time use, the wear of the internal wires and connectors of the wire harness is reduced, the reliability is improved, the failure rate is reduced, and the service life of the wire harness is improved.

[0025] In the embodiments of the utility model, the reinforcing unit comprises a sleeve 12 arranged on the outside of the reinforcing wire core 11, a plurality of support plates 16 are arranged between the sleeve 12 and the second reinforcing net layer 7, and a reinforcing plate 17 is further arranged between each support plate 16 and the insulation layer 8, so that the stability of the internal structure of the wire harness can be further improved.

[0026] In the embodiments of the utility model, a support ring 14 is arranged on the outside of the sleeve 12, and the support ring 14 is arranged between the plurality of support plates 16, wherein the support ring 14 can be made of polyester, polyamide or the like, so that the hardness of the wire harness is further improved, and the anti-bending effect is achieved.

[0027] In the embodiments of the utility model, a solid material 13 is arranged between the support ring 14 and the sleeve 12, and the solid material 13 is made of fluororubber, so that the characteristics of the material can be maintained in a large temperature difference range, and the tensile strength can be effectively improved.

[0028] In the embodiments of the utility model, the wire core reinforcing part 6 comprises a main wire 61, and a plurality of steel wires 62 are wound on the main wire 61, so that the steel wires 62 have high tensile strength and can withstand large tension, the wire harness can be prevented from being pulled off during installation or use, and the anti-bending effect is achieved. Meanwhile, the steel wires 62 can help the wire harness to maintain a specific shape and structure, and prevent the wire harness from being deformed when being bent or twisted.

[0029] In the embodiments of the utility model, a filling layer 5 is further arranged between the first reinforcing net layer 4 and the second reinforcing net layer 7, and the filling layer 5 can be made of polyester fiber material, so that the filling layer 5 has the characteristics of light weight, softness, low cost, good filling and buffering effect.

[0030] In the embodiment of the utility model, the constraint layer 15 is filled between the support ring 14 and the multiple groups of insulation layers 8, the constraint layer 15 is made of SEBS thermoplastic elastomer material, preferably the constraint layer 15 is made of low melting point material such as polyester, which can prevent the cable from loosening or shifting and ensure the neatness and order of the wire harness.

[0031] In the embodiment of the utility model, the fire -retardant layer 10 is filled between the second reinforcing net layer 7 and the reinforcing plate 17, the fire -retardant layer 10 can be polyvinyl chloride material, adds flame retardant, has good flame retardance and insulating property.

[0032] In the embodiment of the utility model, the constant temperature layer 3 is arranged between the wear -resisting layer 1 and the first reinforcing net layer 4, wherein the constant temperature layer 3 can be silica gel, which is resistant to high and low temperature and has good flexibility.

[0033] In the embodiment of the utility model, the corrosion -resistant layer 2 is arranged between the constant temperature layer 3 and the wear -resisting layer 1, the corrosion -resistant layer 2 can be polyvinyl chloride material, protects the cable from the corrosion of chemical substances, moisture, salt fog etc., reduces the damage of corrosion to the cable and prolongs the service life.

[0034] In the description of the utility model, it is necessary to explain that unless another explicit provision and limitation, the terms "installation", "arranged with", "connection" etc. should be broad sense understanding, for example "connection", can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0035] Although the embodiments of the utility model have been shown and described, for ordinary skilled in the art, it can be understood that multiple changes, modifications, replacements and variations can be carried out to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and its equivalents.

Claims

1. A bending-resistant wire harness structure, comprising a wear-resistant layer (1) and a plurality of conductive wire cores (9) installed inside the wear-resistant layer (1), characterized in that: An insulating layer (8) is provided on the outer side of each of the conductive wire cores (9), and an anti-bending layer is provided between the wear-resistant layer (1) and the multiple sets of insulating layers (8); The bending-resistant layer includes a first reinforcing mesh layer (4) and a second reinforcing mesh layer (7), and multiple sets of wire core reinforcing parts (6) are provided between the first reinforcing mesh layer (4) and the second reinforcing mesh layer (7). It also includes a reinforcing core (11) installed at the center of the wear-resistant layer (1), and a reinforcement unit is provided between the reinforcing core (11) and the bending-resistant layer.

2. The bending-resistant wire harness structure according to claim 1, characterized in that: The reinforcement unit includes a sleeve (12) on the outside of the early reinforcing core (11), and multiple sets of support plates (16) are provided between the sleeve (12) and the second reinforcing mesh layer (7). Each support plate (16) is also provided with a reinforcement plate (17) between it and the insulation layer (8).

3. The bending-resistant wire harness structure according to claim 2, characterized in that: A support ring (14) is installed on the outer side of the sleeve (12), and the support ring (14) is arranged between multiple sets of support plates (16).

4. The bending-resistant wire harness structure according to claim 3, characterized in that: A solid material (13) is provided between the support ring (14) and the sleeve (12).

5. The bending-resistant wire harness structure according to claim 1, characterized in that: The core reinforcement (6) includes a main wire (61) on which multiple steel wires (62) are wound.

6. The bending-resistant wire harness structure according to claim 5, characterized in that: A filling layer (5) is also provided between the first reinforcing mesh layer (4) and the second reinforcing mesh layer (7).

7. The bending-resistant wire harness structure according to claim 3, characterized in that: A constraint layer (15) is filled between the support ring (14) and the multiple sets of insulating layers (8).

8. The bending-resistant wire harness structure according to claim 2, characterized in that: A flame-retardant layer (10) is filled between the second reinforcing mesh layer (7) and the reinforcing plate (17).

9. The bending-resistant wire harness structure according to claim 1, characterized in that: A constant temperature layer (3) is provided between the wear-resistant layer (1) and the first reinforcing mesh layer (4).

10. A bending-resistant wire harness structure according to claim 9, characterized in that: An anti-corrosion layer (2) is provided between the constant temperature layer (3) and the wear-resistant layer (1).

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