Automobile wire harness with protection structure

Abstract

The utility model discloses an automobile wire harness with a protection structure, and relates to the technical field of automobile wire harnesses. The wire harness body comprises cables, a wire skin layer and wire terminals, the protection device is divided into an inner-layer protection device and an outer-layer protection device, the inner-layer protection device is arranged between the cables and the wire skin layer, the outer-layer protection device is arranged on the outer surface of the wire skin layer, and the outer surface of each cable is coated with a braid layer or a rubber layer. The inner layer protection device is used for electromagnetic shielding and flame retardance of the cable, the restraint layer is made of a low-melting-point material, the restraint layer can be burnt through quickly when combustion occurs, so that a flame retardant of the flame retardant layer can extinguish fire and resist flame quickly, combustion diffusion is prevented, the safety of the wire harness is improved, and the outer layer protection device improves the anti-pressure capability of the wire harness. And when the wire harness is arranged in a small space environment, through the manufacturing and elasticity of the pressure-resistant ring, the cable in the wire harness is ensured not to be pressed, the cable is prevented from being broken due to pressure, and the use safety and strength of the wire harness are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile wiring harnesses, in particular to an automobile wiring harness with a protection structure. Background Art

[0002] A wiring harness is a connecting wire formed by wrapping multiple strands of cables in a wire sheath. It is widely used in home appliances, automobiles, and control systems. The automotive wiring harness is the network body of the automotive circuit. Without the wiring harness, there would be no automotive circuit. The automotive wiring harness is distributed in various locations inside the car and is used to form the overall line operation of the car.

[0003] With the development of science and technology, many new applications have appeared in automobiles, so the use of wiring harnesses has gradually increased. However, the space inside the car body is limited. When laying the wiring harnesses, it is inevitable that the wiring harnesses will be squeezed and piled up, which can easily cause damage to the wiring harnesses and is not conducive to circuit operation. When a wiring harness fails, it may burn and explode, which is not conducive to the safety of the vehicle and the driver. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an automotive wiring harness with a protective structure, which optimizes the internal flame retardancy and external pressure resistance of the wiring harness by setting an inner layer protective device and an outer layer protective device, thereby improving the safety and strength of the wiring harness.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: an automotive wiring harness with a protective structure, including a wiring harness body, the wiring harness body including a cable, a wire sheath layer coated on the cable, and wire terminals respectively arranged at both ends of the cable, the wiring harness body is also provided with a protective device, the protective devices are an inner layer protective device and an outer layer protective device, the inner layer protective device is arranged between the cable and the wire sheath layer, the outer layer protective device is arranged on the outer surface of the wire sheath layer, the cables include multiple cables, and the outer surface of each cable is coated with a braided layer or a rubber layer.

[0006] The utility model is further configured as follows: the inner layer protection device includes an electromagnetic shielding layer, a flame retardant layer and a constraint layer, the constraint layer is a tube body made of SEBS thermoplastic elastomer material, a plurality of the cables are arranged in parallel in the constraint layer, the flame retardant layer is placed between the electromagnetic shielding layer and the constraint layer, the flame retardant layer has a cavity, the cavity is filled with zinc borate flame retardant, the wire skin layer is arranged on the outside of the electromagnetic shielding layer, and the outer layer protection device is detachably connected to the wire skin layer.

[0007] The present utility model is further configured as follows: The outer protection device includes a sleeve, and a plurality of pressure-resistant rings are provided on the sleeve. The pressure-resistant rings are sleeved on the sleeve, and there is a gap between adjacent two pressure-resistant rings. The distance of this gap is 3 - 15 mm. The sleeve is sleeved on the wire skin layer, and at least a part of the sleeve is inserted into the wire terminal.

[0008] The present utility model is further configured as follows: The wire terminal has a housing, and a sealing groove is opened on the back of the housing. The end of the sleeve is inserted into the sealing groove. At least five pressure-resistant rings are provided, and the pressure-resistant rings are nitrile rubber rings.

[0009] The present utility model is further configured as follows: The wire skin layer is a wear-resistant braided layer, and the wear-resistant braided layer is made of nylon braided wires. Both ends of the wire cable are respectively crimped inside the corresponding wire terminals.

[0010] The present utility model is further configured as follows: The wire harness body is further provided with a wire harness bracket. The wire harness bracket is in a "U" shape. The bottom of the wire harness bracket has a support rod. The surface of the wire harness bracket is coated with an elastic rubber layer. When in use, the wire harness body is embedded in the wire harness bracket.

[0011] In summary, the present utility model has the following beneficial effects: The inner protection device is used for electromagnetic shielding and flame retardancy of the wire cable. The constraint layer is made of a low-melting-point material. When combustion occurs, it can quickly burn through the constraint layer, so that the flame retardant of the flame retardant layer can quickly extinguish the fire and retard the combustion, preventing the spread of combustion, improving the safety of the wire harness. The outer protection device improves the compressive capacity of the wire cable. When the wire harness is laid in a small-space environment, through the formation and elasticity of the pressure-resistant rings, it is ensured that the wire cables inside are not oppressed, preventing the wire cables from breaking due to being oppressed, and improving the use safety and strength of the wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0013] Figure 2 is a schematic cross-sectional structure diagram of the wire harness body of the present utility model.

[0014] In the figure: 1. Wire harness body; 2. Wire cable; 21. Insulating outer skin; 3. Wire skin layer; 4. Wire terminal; 5. Inner protection device; 51. Electromagnetic shielding layer; 52. Flame retardant layer; 53. Constraint layer; 6. Outer protection device; 61. Sleeve; 62. Pressure-resistant ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present utility model will be described in detail below with reference to the drawings and embodiments.

[0016] As Figure 1 、 Figure 2As shown, the utility model is a kind of automobile wiring harness with a protection structure, including a wiring harness body 1, the wiring harness body 1 is composed of a cable 2, a wire sheath 3 and a wire terminal 4, two wire terminals 4 are provided, which are respectively arranged at both ends of the cable 2, and the cable 2 has multiple cables, and the multiple cables 2 are respectively crimped to the corresponding wire terminals 4, so that the cable 2 is connected to the wire terminal 4, and the protection device is provided with two parts, which are an inner layer protection device 5 and an outer layer protection device 6, and the inner layer protection device 5 is arranged between the cable 2 and the wire sheath 3, and the inner layer protection device 5 is used to improve the safety of the cable 2, and the outer layer protection device 6 is arranged on the outside of the wiring harness body 1, and the outer layer protection device 6 is sleeved on the wire sheath 3, and at least a part of it extends into the wire terminal 4, and the outer layer protection device 6 is used to improve the strength and pressure resistance of the wiring harness body 1, and the cable 2 is an electric wire or a data cable, which is used for power transmission or data exchange in the car, and the surface of each cable 2 is covered with an insulating outer sheath 21 made of a braided layer or a rubber layer.

[0017] Specifically, Figure 1 As shown, the inner protective device 5 includes an electromagnetic shielding layer 51, a flame retardant layer 52 and a constraint layer 53. The constraint layer 53 is tubular and is made of SEBS thermoplastic elastomer material. It has an elastic tube body. The cables 2 are arranged side by side in the tube body. When in use, multiple cables 2 are bundled together by insulating strips to form a wiring harness, and then the wiring harness is inserted into the tube body. The constraint layer 53 is made of a low melting point material. When the wiring harness burns, it can quickly burn through the constraint layer 53, so that the flame retardant layer 52 outside the constraint layer 53 can quickly extinguish the fire. The flame retardant layer 52 is arranged between the constraint layer 53 and the electromagnetic shielding layer 51. The flame retardant layer 5 2 is actually a cavity separated by the constraint layer 53 and the electromagnetic shielding layer 51, forming a cavity filled with zinc borate flame retardant. When the constraint layer 53 is burned through, the zinc borate flame retardant in the cavity will enter the constraint layer 53 to extinguish the burning point, ensuring that the wire harness in the constraint layer 53 will not spread when it burns, thereby improving the safety of the wire harness when in use. The electromagnetic shielding layer 51 is used to ensure the communication smoothness of the wire harness and reduce electromagnetic interference; the wire skin layer 3 is woven by nylon braided wire, and the wire skin layer 3 is arranged on the outer surface of the electromagnetic shielding layer 51 to cover the electromagnetic shielding layer 51. The wire skin layer 3 made of nylon wire has excellent wear resistance.

[0018] like Figure 2As shown, the outer layer protection device 6 is arranged outside the wire cortex 3, and the outer layer protection device 6 is composed of a sleeve 61 and a pressure-resistant ring 62 arranged on the sleeve 61. There are multiple pressure-resistant rings 62, which are respectively arranged in parallel on the sleeve 61. The annular pressure-resistant ring 62 is sleeved on the sleeve 61, and the spacing between two adjacent pressure-resistant rings 62 is 3-15mm. When in use, the two ends of the sleeve 61 are respectively inserted into the inside of the two wire terminals 4; specifically, the back side of the wire terminal 4, that is, the side facing the sleeve 61, is provided with a sealing groove, and the sleeve 61 is sleeved on the back of the wire cortex 3. , push the sleeve 61 to one side of the wire terminal 4, insert the end of the sleeve 61 into the sealing groove, and then seal the connection with sealant, and then connect the sealing groove of the other wire terminal 4 to the sleeve 61, and the pressure-resistant ring 62 is a nitrile rubber ring; the outer layer protection device 6 improves the pressure resistance of the wire harness through the pressure-resistant ring 62, even if the wire harness is set in a small space and squeezed with other structures, it can protect the cable 2 inside it from being affected; in some application scenarios, the wire harness body 1 can also use a wire harness bracket to erect the wire harness body 1 through the wire harness bracket.

[0019] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An automotive wiring harness with a protection structure, characterized in that: It includes a wiring harness body (1), and the wiring harness body (1) includes a cable (2), a wire skin layer (3) coated on the cable (2), and wire terminals (4) respectively arranged at both ends of the cable (2). A protection device is also provided on the wiring harness body (1), and the protection devices are respectively an inner protection device (5) and an outer protection device (6). The inner protection device (5) is arranged between the cable (2) and the wire skin layer (3), and the outer protection device (6) is arranged on the outer surface of the wire skin layer (3). The cable (2) includes multiple ones, and the outer surface of each cable (2) is coated with a braided layer or a rubber layer.

2. The automotive wiring harness with a protection structure according to claim 1, characterized in that: The inner protection device (5) includes an electromagnetic shielding layer (51), a flame retardant layer (52), and a restraint layer (53). The restraint layer (53) is a tube body made of SEBS thermoplastic elastomer material. Multiple cables (2) are arranged in parallel in the restraint layer (53). The flame retardant layer (52) is placed between the electromagnetic shielding layer (51) and the restraint layer (53). The flame retardant layer (52) has a cavity, and zinc borate flame retardant is filled in the cavity. The wire skin layer (3) is arranged on the outside of the electromagnetic shielding layer (51), and the outer protection device (6) is detachably connected to the wire skin layer (3).

3. The automotive wiring harness with a protection structure according to claim 2, characterized in that: The outer protection device (6) includes a sleeve (61). Multiple voltage-resistant rings (62) are provided on the sleeve (61). The voltage-resistant rings (62) are sleeved on the sleeve (61). There is a gap between adjacent two voltage-resistant rings (62), and the distance of this gap is 3 - 15 mm. The sleeve (61) is sleeved on the wire skin layer (3), and at least a part of the sleeve (61) is inserted into the wire terminal (4).

4. The automotive wiring harness with a protection structure according to claim 3, characterized in that: The wire terminal (4) has a housing, and a sealing groove is opened on the back of the housing. The end of the sleeve (61) is inserted into this sealing groove. At least five voltage-resistant rings (62) are provided, and the voltage-resistant rings (62) are nitrile rubber rings.

5. The automotive wiring harness with a protection structure according to claim 1, characterized in that: The wire skin layer (3) is a wear-resistant braided layer, and the wear-resistant braided layer is woven by nylon braided wires. Both ends of the cable (2) are respectively crimped into the corresponding wire terminals (4).

6. The automotive wiring harness with a protection structure according to claim 1, characterized in that: The wiring harness body (1) is also provided with a wiring harness bracket. The wiring harness bracket is in a "U" shape. The bottom of the wiring harness bracket has a support rod. The surface of the wiring harness bracket is coated with an elastic rubber layer. When in use, the wiring harness body (1) is embedded into this wiring harness bracket.

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