Vehicle power supply wire harness assembly with flame-retardant structure

Abstract

The invention discloses a vehicle electric power wire harness assembly with a flame-retardant structure, and relates to the technical field of vehicle electric power wire harness assemblys.The vehicle electric power wire harness assembly comprises a wire inlet connector, a first binding post, a second binding post, a first wire and a power wire core; the wiring mechanism comprises a first binding post, a second binding post and a threaded through hole, the first binding post and the second binding post are used for being connected with various power supply cables, the heat insulation performance of the flame-retardant protective layer is remarkably improved by adding the nano aerogel heat insulation layer, the wiring harness can better keep stable operation in a high-temperature environment, and the service life of the wiring harness is prolonged. The damage speed of flame to the internal structure of the wire harness when a fire occurs is effectively reduced, and more time is won for personnel evacuation and fire suppression.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle electrical power wiring harness assemblies, and in particular to a vehicle electrical power wiring harness assembly with a flame retardant structure. Background Art

[0002] The vehicle power wiring harness assembly is a collection of multiple wires, cables, and related connectors and terminals. Its main function is to transmit the electrical energy generated by the vehicle power supply (such as batteries, generators, etc.) to various electrical devices and electronic components, providing them with power support to ensure that these devices can work normally. However, the existing vehicle power wiring harness assembly has some shortcomings, such as: The power wiring harness assembly and vehicle described in application number: CN202323233644.9 do not have a flame retardant structure. During actual use, once spontaneous combustion occurs due to collision or other reasons, it cannot provide effective flame retardant effect, and it will be difficult to support rescue and extinguish the fire, and property losses cannot be reduced. Summary of the Invention

[0003] The purpose of the present invention is to provide a vehicle electrical power wiring harness assembly with a flame-retardant structure to solve the problem raised in the above background technology that the existing market does not have a flame-retardant structure. During actual use, once spontaneous combustion occurs due to collision or other reasons, it cannot provide effective flame-retardant effect, and it will be difficult to support rescue and extinguish the fire, and property losses cannot be reduced.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a vehicle power wiring harness assembly with a flame-retardant structure, comprising an incoming line connector, a first terminal, a second terminal, a first conductor, and a power line core; The incoming line connector is provided with a wiring mechanism, which includes a first wiring post, a second wiring post and a threaded through hole, and the first wiring post and the second wiring post are used to connect with various power supply cables; A first conductor and a second conductor are provided on the right side of the incoming conductor. A quick-connect mechanism is provided on the right side of the first conductor. The quick-connect mechanism includes an adjusting rod, a first connecting rod, a second connecting rod, a pulling block, a first connector, a second connector, a limit buckle and a spring. The adjusting rod and the pulling block are rotated to quickly pull and fix the first connector and the second connector. The first conductive wire and the second conductive wire both include a plurality of power cores, and the power core bodies are sequentially wrapped with a shielding layer, an outer insulating layer and a flame retardant protective layer.

[0005] As a preferred technical solution of the present invention, the midline position of the side of the second joint in the wiring mechanism is rotatably connected to the limit buckle, the upper part of the midline of the limit buckle is a hook-shaped structure, and the side of the limit buckle is fixedly connected to one end of the spring, the other end of the spring is fixedly connected to the side of the second joint, and a semicircular groove starts on the left side below the midline of the limit buckle; both sides of the second joint are rotatably connected to the first connecting rod, the first connecting rod is rotatably connected to the traction block, a guide groove is provided at the edge of the traction block, the second connecting rod is slidably connected in the guide groove, one end of the second connecting rod is rotatably connected to the first joint, the outer side of the traction block is fixedly connected to the adjusting rod, and the adjusting rod is engaged with the groove below the limit buckle; By adopting the above technical solution, the device inserts the second connecting rod into the guide groove, and can drive the traction block to rotate through the adjusting rod. The structure of the guide groove is used to quickly connect and fix the second joint and the first joint, and the adjusting rod is fixed by the limit buckle and spring to ensure the stability of the connection.

[0006] As a preferred technical solution of the present invention, the shielding layer is made of a metal braided mesh or a metal foil; Using the above technical solution, a new composite shielding material has been developed for the shielding layer. This material is composed of a metal woven mesh and graphene. The metal woven mesh provides basic shielding functions, while the graphene has excellent conductivity and electromagnetic shielding properties. It can effectively enhance the shielding effect against high-frequency electromagnetic interference, compensating for the insufficient shielding performance of traditional shielding materials in the high-frequency band, and ensuring the stable operation of the vehicle electrical system in complex electromagnetic environments.

[0007] As a preferred technical solution of the present invention, the outer insulating layer is made of polyvinyl chloride or cross-linked polyethylene; The above technical solution is adopted to add a buffer layer, which is arranged between the shielding layer and the outer insulating layer. The buffer layer is made of a rubber material with good flexibility and buffering performance, such as EPDM rubber. When the wiring harness is squeezed or stretched by external force, the buffer layer can effectively disperse the stress, protect the internal power cord core, shielding layer and insulation layer from damage, and extend the service life of the wiring harness.

[0008] As a preferred technical solution of the present invention, the flame retardant protective layer is composed of a multi-layer structure, which includes, from the inside to the outside, an inorganic flame retardant fiber layer, a flame retardant coating, and a ceramic silicone rubber layer. The inorganic flame retardant fiber layer is made of glass fiber or basalt fiber. The flame retardant coating is composed of an intumescent flame retardant composed of a carbon source, an acid source, and a gas source. At high temperatures, it can form a foam carbon layer that isolates heat sources and oxygen. The outer surface of the flame retardant protective layer is provided with a warning sign, which contains information related to the flame retardancy of the wiring harness and its use. The inner insulating layer is made of polytetrafluoroethylene or cross-linked polypropylene, and the conductive metal wire of the power cord core is copper wire or aluminum wire. The above technical solution is adopted to improve the formula of the flame retardant coating. Nano-montmorillonite is added on the basis of the original carbon source, acid source and gas source. Nano-montmorillonite has good barrier properties and can be evenly dispersed in the flame retardant coating during the process of forming a foam carbon layer, further improving the density and barrier properties of the foam carbon layer, more effectively isolating heat sources and oxygen, and enhancing the flame retardant effect.

[0009] Compared with the prior art, the present invention has the following beneficial effects: 1. Enhanced physical protection performance: The newly added buffer layer can effectively buffer external forces, reducing damage to the internal structure of the wiring harness caused by external forces such as extrusion and stretching, greatly improving the mechanical performance and stability of the wiring harness, reducing vehicle electrical system failures caused by line damage, and reducing vehicle maintenance costs and safety risks; 2. Improved flame retardant and heat insulation effect: The addition of nano-aerogel insulation layer significantly improves the heat insulation performance of the flame retardant protective layer, enabling the wiring harness to maintain better stable operation in high temperature environments, effectively reducing the speed at which flames damage the internal structure of the wiring harness when a fire occurs, and buying more time for personnel evacuation and fire fighting; 3. Optimizing electromagnetic shielding performance: The application of new composite shielding materials not only ensures effective shielding against low-frequency electromagnetic interference, but also greatly enhances the shielding capability against high-frequency electromagnetic interference, providing a more stable electromagnetic environment for the vehicle's electrical system, ensuring the normal operation of the vehicle's electronic equipment, and improving the vehicle's overall electronic performance and reliability; 4. Improve the durability of flame retardant performance: The improved flame retardant coating formula, due to the addition of nano-montmorillonite, the barrier performance of the foam carbon layer is further enhanced, which can play a more lasting flame retardant role in the event of a fire, effectively extending the flame retardant time of the wiring harness and improving the fire safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a side structural schematic diagram of the present invention; Figure 2 This is a schematic structural diagram of the traction block and the first joint of the present invention; Figure 3 This is a schematic structural diagram of the incoming line connector and the first terminal of the present invention; Figure 4 This is a schematic structural diagram of the second connecting rod and the first joint of the present invention; Figure 5 This is a schematic diagram of the second joint and the limiting buckle structure of the present invention; Figure 6 This is a schematic diagram of the limit buckle and spring structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0011] In the figure: 1. Incoming line connector; 2. First terminal; 3. Second terminal; 4. First conductor; 5. Adjusting rod; 6. First connecting rod; 7. Second connecting rod; 8. Pulling block; 9. First connector; 10. Second connector; 11. Limit buckle; 12. Second conductor; 13. Threaded through hole; 14. Guide groove; 15. Spring; 16. Flame retardant protective layer; 17. Outer insulation layer; 18. Shielding layer; 19. Power cord core. DETAILED DESCRIPTION

[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0013] See also Figure 1 - Figure 7 The technical solution of the present invention is a vehicle power wiring harness assembly with a flame retardant structure, comprising an incoming line connector 1, a first terminal 2, a second terminal 3, a first wire 4, an adjusting rod 5, a first connecting rod 6, a second connecting rod 7, a pulling block 8, a first connector 9, a second connector 10, a limiting buckle 11, a second wire 12, a threaded through hole 13, a guide groove 14, a spring 15, a flame retardant protective layer 16, an outer insulating layer 17, a shielding layer 18 and a power cord core 19.

[0014] During actual connection and use, first connect various types of power supply cables to the first terminal 2 and the second terminal 3 at the incoming connector 1, and tighten them through the threaded through hole 13 to ensure a firm connection and avoid loosening and poor contact. When it is necessary to connect the first connector 9 on the right side of the first wire 4 to a device connected to other device connectors such as the second connector 10, insert the second connecting rod 7 into the guide groove 14 on the edge of the traction block 8, and then rotate the adjusting rod 5. The adjusting rod 5 drives the traction block 8 to rotate. During the rotation of the traction block 8, the first connecting rod 6 moves with the traction block 8. Since one end of the first connecting rod 6 is rotatably connected to the second connector 10 and the other end is rotatably connected to the traction block 8, one end of the second connecting rod 7 is rotatably connected to the first connector 9 and slides in the guide groove 14, so that the first connector 9 and the second connector 10 gradually approach and are quickly connected. When the adjusting rod 5 is rotated to the appropriate position, the adjusting rod 5 will be stuck in the semicircular groove below the limiting buckle 11. At this time, the spring 15 is in a stretched state. The elastic force of the spring 15 is used to make the limiting buckle 11 tightly clamp the adjusting rod 5 to prevent it from loosening, thereby ensuring the stability of the connection between the first joint 9 and the second joint 10.

[0015] During the operation of the vehicle, the power cord core 19 is responsible for transmitting electrical energy. If the conductive metal wire is copper wire, it has good conductivity and low resistance, which can effectively reduce the loss during the power transmission process; if it is aluminum wire, it has the advantage of light weight, which can reduce the overall weight of the wiring harness. The shielding layer 18 uses a metal braided mesh or metal foil. In the improved solution, a new material composed of a metal braided mesh and graphene is used to effectively shield external electromagnetic interference and ensure the stable operation of the vehicle's electrical system, especially in the complex electronic environment of the vehicle, to avoid interference of electromagnetic signals generated by other electronic devices with the wiring harness transmission signal. The outer insulating layer 17 is made of polyvinyl chloride PVC or cross-linked polyethylene XLPE. After the buffer layer is added, the buffer layer is made of ethylene propylene diene monomer rubber EPDM and other materials. On the one hand, it plays an insulating role to prevent current leakage. On the other hand, the buffer layer can disperse stress and protect the internal structure when squeezed or stretched by external force. The flame retardant protective layer 16 is composed of an inorganic flame retardant fiber layer, a flame retardant coating and a ceramic silicone rubber layer from the inside to the outside. The inorganic flame retardant fiber layer is made of glass fiber or basalt fiber and has good flame retardant properties. The flame retardant coating is composed of a carbon source, an acid source, and a gas source. Nano-montmorillonite is added to the improved formula. It can rapidly expand at high temperatures to form a foam carbon layer, isolating the heat source and oxygen. The addition of nano-montmorillonite improves the density and barrier properties of the foam carbon layer. The ceramic silicone rubber layer will transform into a hard ceramic-like substance at high temperatures, further enhancing the strength and thermal insulation performance of the flame retardant protective layer; The warning signs set on the outer surface of the flame retardant protective layer can help maintenance personnel or operators quickly understand the flame retardant properties and usage precautions of the wiring harness.

[0016] Working principle: When using a vehicle power harness assembly with a flame-retardant structure, first complete the connection between the incoming connector 1 and the power supply cable and the quick connection between the first connector 9 and the second connector 10. During the driving process of the vehicle, the power cord core 19 transmits electrical energy, the shielding layer 18 resists electromagnetic interference, the outer insulation layer 17 and the buffer layer protect the internal structure from external damage, and the flame-retardant protective layer 16 plays a flame-retardant and heat-insulating role when encountering high temperatures or fire hazards. When the vehicle is subjected to external electromagnetic interference, the metal braided mesh and graphene in the new composite shielding material work together to effectively shield low-frequency and high-frequency electromagnetic interference, ensuring the stable operation of the vehicle electrical system. If a fire occurs in the vehicle, the inorganic flame-retardant fiber layer in the flame-retardant protective layer first prevents the spread of flames, the flame-retardant coating quickly forms a foam carbon layer, the nano-montmorillonite enhances the barrier performance of the carbon layer, and the ceramic silicone rubber layer is converted into a ceramic-like substance. The multi-layer structure works together to slow down the damage of the flame to the internal structure of the wiring harness, providing protection for vehicle safety.

[0017] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vehicle power supply wiring harness assembly with a flame retardant structure, comprising an incoming line connector (1); a wiring mechanism is provided at the incoming line connector (1), the wiring mechanism comprising a first terminal (2), a second terminal (3) and a threaded through hole (13), and the first terminal (2) and the second terminal (3) are used to connect to various power supply cables; characterized in that: A first conductor (4) and a second conductor (12) are provided on the right side of the incoming conductor (1); a quick-connect mechanism is provided on the right side of the first conductor (4); the quick-connect mechanism comprises an adjusting rod (5), a first connecting rod (6), a second connecting rod (7), a traction block (8), a first connector (9), a second connector (10), a limit buckle (11) and a spring (15); and the adjusting rod (5) and the traction block (8) are rotated to quickly traction-fix the first connector (9) and the second connector (10); The first wire (4) and the second wire (12) both comprise a plurality of power wire cores (19), wherein the main body of the power wire core (19) is sequentially wrapped with an inner insulating layer, a shielding layer (18), an outer insulating layer (17), and a flame retardant protective layer (16).

2. The vehicle power wiring harness assembly with a flame retardant structure according to claim 1, characterized in that: The centerline position of the side of the second connector (10) in the wiring mechanism is rotatably connected to the limit buckle (11), the centerline of the limit buckle (11) is a hook-shaped structure, and the side of the limit buckle (11) is fixedly connected to one end of the spring (15), and the other end of the spring (15) is fixedly connected to the side of the second connector (10), and a semicircular groove starts on the left side below the centerline of the limit buckle (11).

3. The vehicle power wiring harness assembly with a flame retardant structure according to claim 2, characterized in that: Both sides of the second joint (10) are rotatably connected to the first connecting rod (6), the first connecting rod (6) is rotatably connected to the traction block (8), a guide groove (14) is provided at the edge of the traction block (8), the second connecting rod (7) is slidably connected in the guide groove (14), one end of the second connecting rod (7) is rotatably connected to the first joint (9), the outer side of the traction block (8) is fixedly connected to the adjustment rod (5), and the adjustment rod (5) is engaged with the groove below the limit buckle (11).

4. The vehicle power wiring harness assembly with a flame retardant structure according to claim 1, characterized in that: The shielding layer (18) is made of a metal braided mesh or a metal foil.

5. The vehicle power wiring harness assembly with a flame retardant structure according to claim 1, characterized in that: The outer insulating layer (17) is made of polyvinyl chloride (PVC) or cross-linked polyethylene (XLPE).

6. The vehicle power wiring harness assembly with a flame retardant structure according to claim 1, characterized in that: The flame retardant protective layer (16) is composed of a multi-layer structure, which comprises, from the inside to the outside, an inorganic flame retardant fiber layer, a flame retardant coating layer, and a ceramic silicone rubber layer, wherein the inorganic flame retardant fiber layer is made of glass fiber or basalt fiber.

7. The vehicle power wiring harness assembly with a flame retardant structure according to claim 6, characterized in that: The flame retardant coating is composed of an intumescent flame retardant composed of a carbon source, an acid source and a gas source, and can form a foam carbon layer that isolates heat sources and oxygen at high temperatures.

8. The vehicle power wiring harness assembly with a flame retardant structure according to any one of claims 1 to 7, characterized in that: The outer surface of the flame retardant protective layer (16) is provided with a warning sign, which contains information related to the flame retardancy of the wiring harness and its use.

9. The vehicle power wiring harness assembly with a flame retardant structure according to any one of claims 1 to 7, characterized in that: The inner insulating layer is made of polytetrafluoroethylene (PTFE) or cross-linked polypropylene (XLPP).

10. The vehicle power wiring harness assembly with a flame retardant structure according to any one of claims 1 to 7, characterized in that: The power line core (19) is made of copper wire or aluminum wire.

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