High temperature resistant electronic connecting wire
By adopting high-temperature resistant electronic connection wires with silver-plated copper core wires and multi-layer composite structures, the problems of poor material performance and high cost in existing technologies have been solved. Stable operation and fire protection in high-temperature environments have been achieved, while improving flexibility and mechanical strength and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN RUNFA CABLE CO LTD
- Filing Date
- 2025-05-24
- Publication Date
- 2026-06-26
Smart Images
Figure CN224417532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic connection wire technology, and in particular to a high-temperature resistant electronic connection wire. Background Technology
[0002] An electronic connection cable is a cable assembly used to transmit electrical signals or power between electronic devices. It typically consists of conductors, insulation, shielding, and connectors. The conductors are the core of the electronic connection cable, used to transmit current and signals. They are generally made of high-purity copper or aluminum to ensure good conductivity. The insulation layer wraps around the conductors, providing isolation and protection to prevent short circuits or leakage between conductors. Common insulation materials include polyvinyl chloride (PVC) and polyethylene (PE). The shielding layer reduces the impact of external electromagnetic interference on the transmitted signal, improving the stability and reliability of signal transmission. It is often used in applications with high signal quality requirements. The connector is the interface between the electronic connection cable and the electronic device, enabling quick connection and disconnection through plugging and unplugging, facilitating equipment assembly and maintenance. In recent years, with the development of new energy vehicles, aerospace, industrial automation, and other fields, the demand for high-temperature resistant electronic connection cables has increased dramatically.
[0003] Currently, solutions for high-temperature resistant electronic connectors mainly include the following: First, using polytetrafluoroethylene (PTFE) as insulation material, with a temperature resistance range of -200℃ to 260℃, but this is costly and difficult to process; second, using silicone rubber insulation, which has good temperature resistance (approximately -60℃ to 200℃) and good flexibility, but has low mechanical strength and is prone to wear; third, using ceramic fiber to wrap the conductor, which has excellent temperature resistance (exceeding 1000℃), but is heavy and brittle, making it unsuitable for dynamic wiring scenarios. In addition, there are solutions that reduce resistance heating by increasing the conductor cross-sectional area, but this leads to a significant increase in cable size and weight.
[0004] However, most of the materials used in existing electronic connectors are of poor performance or too expensive. PTFE material is too expensive and has a complex processing technology. Silicone rubber insulation layer is prone to permanent deformation under long-term high temperature. Ceramic fiber wrapping solution cannot meet the requirements of flexible wiring. The solution of increasing the conductor cross-sectional area sacrifices the lightweight characteristics of the cable. These defects seriously limit the application of high temperature resistant electronic connectors in cost-sensitive fields or dynamic environments. Therefore, a high temperature resistant electronic connector is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a high-temperature resistant electronic connection wire, which aims to improve the problems of high manufacturing cost and inability to maintain the flexibility and mechanical strength of the cable while ensuring good high-temperature resistance in the existing technology.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-temperature resistant electronic connection wire, comprising a core wire, wherein a high-temperature resistant mechanism is fixedly connected to the outside of the core wire, and a flame-retardant mechanism is fixedly connected to the outside of the high-temperature resistant mechanism;
[0007] The high-temperature resistant mechanism includes a conductive component, the interior of which is fixedly connected to the exterior of the core wire. A double-layer polyimide film strip is fixedly connected to the exterior of the conductive component. An alumina filler layer is fixedly connected to the interior of the double-layer polyimide film strip. A stainless steel wire braided sleeve is fixedly connected to the exterior of the double-layer polyimide film strip. A fluororubber outer layer is fixedly connected to the exterior of the alumina filler layer.
[0008] Through the above technical solution: the core wire serves as the core of current transmission, and is externally connected to a high-temperature resistant mechanism to resist high-temperature environments. The high-temperature resistant mechanism is externally connected to a flame-retardant mechanism to play a fire-retardant role. During current transmission, the core wire transmits current, and the various components in the high-temperature resistant mechanism work together to ensure the stable operation of the electronic connection wire in high-temperature environments. The flame-retardant mechanism plays a protective role when encountering fire hazards.
[0009] As a further description of the above technical solution:
[0010] The conductive component includes a conductive filler layer, the interior of which is fixedly connected to the exterior of the core wire, and a nickel alloy braided layer is fixedly connected to the exterior of the conductive filler layer.
[0011] The above technical solution involves fixing the conductive filler layer outside the core wire to assist the core wire in conducting current, optimizing the current transmission path, and reducing resistance heating. The nickel alloy braided layer is located outside the conductive filler layer, which on the one hand reflects radiant heat and reduces heat transfer to the internal structure, and on the other hand improves the mechanical strength of the cable.
[0012] As a further description of the above technical solution:
[0013] The flame-retardant mechanism includes a fire-resistant mica tape, the inside of which is fixedly connected to the outside of the alumina filling layer, and the outside of the fluororubber outer layer is fixedly connected to a fire-resistant coating.
[0014] Through the above technical solution: when exposed to high temperature and open flame, the mica sheets in the fireproof mica tape expand to form a heat insulation barrier, and the fireproof coating also plays a flame-retardant role. Together, they prevent the flame and heat from being transmitted inward, protect the internal components, and prevent internal failures caused by external fire sources.
[0015] As a further description of the above technical solution:
[0016] The fire-resistant mica tape is externally fixedly connected to the inside of the double-layer polyimide film tape, and the nickel alloy braided layer is externally fixedly connected to the inner wall of the double-layer polyimide film tape.
[0017] Through the above technical solution, the fireproof mica tape can respond quickly in the event of a fire, forming a heat insulation layer to protect the double-layer polyimide film tape and internal structure from flame damage.
[0018] As a further description of the above technical solution:
[0019] The core wires are arranged in a concentric twisted manner, and the double-layer polyimide film tape is spirally wound around the outer surface of the nickel alloy braided layer.
[0020] The above technical solution involves the core wires being arranged in a concentric twisted manner, which increases flexibility and facilitates wiring. The double-layer polyimide film tape is spirally wound on the outer surface of the nickel alloy braided layer, which not only ensures good insulation performance but also further enhances flexibility due to the spiral winding method.
[0021] As a further description of the above technical solution:
[0022] The alumina filler layer is filled into the interlayer gap of the double-layer polyimide film strip by a thermosetting process, and the stainless steel wire braided sleeve is woven at a 54° cross angle on the outer surface of the double-layer polyimide film strip.
[0023] The above technical solution involves filling the gaps between the layers of a double-layer polyimide film with an alumina filler layer through a thermosetting process. The filler layer has a particle size of 5μm and a purity of ≥99.5%, which can effectively enhance thermal conductivity and conduct the heat generated by the core wire away in a timely manner, thus avoiding local overheating.
[0024] As a further description of the above technical solution:
[0025] The fluororubber outer layer is extruded and coated onto the outer surface of the stainless steel wire braided sleeve. The double-layer polyimide film strip has a thickness of 0.05mm ± 0.005mm and a width of 10mm.
[0026] Through the above technical solution, the double-layer polyimide film tape provides stable insulation for the electronic connection wire. During the long-term use of the electronic connection wire, the fluororubber outer layer and the double-layer polyimide film tape work together to extend the service life of the electronic connection wire.
[0027] As a further description of the above technical solution:
[0028] The stainless steel wire braided sleeve has a single wire diameter of 0.12 mm, the fluororubber outer layer has a Shore hardness of 70±5, and the alumina filling layer has a particle size of 5 μm and a purity of ≥99.5%.
[0029] Through the above technical solutions: the stainless steel wire braided sleeve ensures mechanical performance without excessively increasing the weight and volume of the cable; the fluororubber outer layer ensures effective protection of the internal structure in various environments; and the alumina filling layer ensures good thermal conductivity.
[0030] This utility model has the following beneficial effects:
[0031] 1. In this utility model, the silver-plated copper material of the core wire reduces contact resistance and heat generation; the nickel alloy braided layer reflects heat and reinforces the cable; the conductive filler layer assists in conductivity; the double-layer polyimide film tape provides insulation and high-temperature resistance; the alumina filler layer conducts heat to avoid local overheating and improves high-temperature resistance; the stainless steel wire braided sleeve disperses stress and enhances bending and tensile strength; and the fluororubber outer layer isolates corrosion and stabilizes the structure. This allows the product to work continuously and efficiently in high-temperature environments, greatly improving the service life and high-temperature resistance of electronic connection wires. It not only reduces costs but also effectively maintains the flexibility of the cable.
[0032] 2. In this utility model, the fireproof mica tape expands to form a heat insulation barrier when exposed to high temperature and open flame, blocking the spread of flames and heat inward, protecting internal components, and reducing the risk of failure. The fireproof coating on the fluororubber outer layer forms a carbonized layer when exposed to fire to prevent the spread of flames. Together with the fireproof mica tape, they form a dual fireproof system to improve safety in fire environments. Attached Figure Description
[0033] Figure 1 This is a perspective view of a high-temperature resistant electronic connection wire proposed in this utility model;
[0034] Figure 2 This is a schematic diagram of the core wire structure of a high-temperature resistant electronic connecting wire proposed in this utility model;
[0035] Figure 3 for Figure 2 Enlarged view of point A in the middle.
[0036] Legend:
[0037] 1. Core wire; 2. High temperature resistant mechanism; 21. Conductive component; 2101. Conductive filler layer; 2102. Nickel alloy braided layer; 22. Double-layer polyimide film tape; 23. Alumina filler layer; 24. Stainless steel wire braided sheath; 25. Fluororubber outer layer; 3. Flame retardant mechanism; 31. Fireproof mica tape; 32. Fireproof coating. Detailed Implementation
[0038] 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.
[0039] Reference Figures 1 to 3 This utility model provides an embodiment of a high-temperature resistant electronic connection wire, comprising a core wire 1 arranged in a concentric twisted manner. The core wire 1 is composed of multiple strands of silver-plated copper. The silver-plated copper material is used because the silver plating layer can reduce contact resistance and ensure less current loss during transmission. A high-temperature resistant mechanism 2 is fixedly connected to the outside of the core wire 1, and a flame-retardant mechanism 3 is fixedly connected to the outside of the high-temperature resistant mechanism 2. The high-temperature resistant mechanism 2 includes a conductive component 21, which is internally fixedly connected to the outside of the core wire 1. A double layer of polyimide is fixedly connected to the outside of the conductive component 21. The polyimide film tape 22, made of polyimide material, has excellent high-temperature resistance and insulation properties. As a basic insulation structure, it can effectively isolate the current in the core wire 1 from the external environment and prevent leakage. The double-layer polyimide film tape 22 is spirally wound on the outer surface of the nickel alloy braided layer 2102. The thickness of the double-layer polyimide film tape 22 is 0.05mm ± 0.005mm and the width is 10mm. An aluminum oxide filling layer 23 is fixedly connected inside the double-layer polyimide film tape 22. When the electronic connection line is working, the aluminum oxide filling layer 23 can conduct away the heat generated by the core wire 1 in time to avoid local overheating.
[0040] An alumina filler layer 23 is filled into the interlayer gap of the double-layer polyimide film strip 22 by a thermosetting process. The particle size of the alumina filler layer 23 is 5μm and the purity is ≥99.5%. A stainless steel wire braided sleeve 24 is fixedly connected to the outside of the double-layer polyimide film strip 22. The single wire diameter of the stainless steel wire braided sleeve 24 is 0.12mm. The stainless steel wire braided sleeve 24 is woven on the outer surface of the double-layer polyimide film strip 22 at a 54° cross angle. The stainless steel wire braided sleeve 24 has good mechanical properties. It can disperse mechanical stress. When the electronic connection wire is subjected to external forces such as tension, bending, and compression, the stainless steel wire braided sleeve 24 can evenly disperse these stresses and prevent stress concentration from damaging the internal insulation layer and conductor. The alumina filling layer 23 is fixedly connected to the outside of the fluororubber outer layer 25. The fluororubber outer layer 25 is extruded and coated on the outer surface of the stainless steel wire braided sleeve 24. The fluororubber outer layer 25 has a Shore hardness of 70±5. Fluororubber has excellent chemical stability and corrosion resistance, which can isolate external corrosive media, such as humid air and chemical gases, to prevent these media from corroding the internal structure and extend the service life of the electronic connection wire.
[0041] Specifically, the core wire 1 is made of multi-strand silver-plated copper material and is arranged concentrically. The silver plating layer reduces contact resistance and current transmission loss. The conductive filler layer 2101 assists in conduction. The nickel alloy braided layer 2102 reflects radiant heat and enhances mechanical strength. The double-layer polyimide film tape 22 is spirally wound around the nickel alloy braided layer 2102 to provide basic insulation and isolate the current from the outside. The alumina filler layer 23 can conduct the heat generated by the core wire 1 to avoid local overheating. The stainless steel wire braided sleeve 24 can disperse the mechanical stress generated by external forces such as stretching, bending, and extrusion, and protect the internal structure. The fluororubber outer layer 25 is extruded and coated on the stainless steel wire braided sleeve 24 to isolate humid air, chemical gases and other corrosive media, extend service life, and enable the electronic connection wire to stably transmit current and maintain good performance in high temperature, complex external force and corrosive environment.
[0042] Reference Figures 2 to 3 The conductive component 21 includes a conductive filler layer 2101, which is internally fixed to the outside of the core wire 1. The conductive filler layer 2101 is tightly fixed to the outside of the core wire 1. Its main function is to assist in conduction. When current passes through the core wire 1, the conductive filler layer 2101 can assist the silver-plated copper core wire in conducting current, further optimizing the current transmission path, reducing the heat generated by resistance, improving the overall conductivity, and ensuring the stable electrical performance of the electronic connection wire during operation. A nickel alloy braided layer 2102 is fixedly connected to the outside of the conductive filler layer 2101. The nickel alloy braided layer 2102 can reflect radiant heat. In high-temperature environments, the external radiant heat will be reflected away by the nickel alloy braided layer 2102, reducing the heat transfer to the core wire 1 and other internal structures, protecting the insulation layer and conductor inside the cable from the effects of excessively high temperatures. The nickel alloy braided layer 2102 can also significantly improve the mechanical strength of the cable, enhance the tensile and abrasion resistance of the electronic connection wire, and make it more durable in complex usage environments.
[0043] The nickel alloy braided layer 2102 is externally fixedly connected to the inner wall of the double-layer polyimide film strip 22. The flame-retardant mechanism 3 includes a fireproof mica strip 31, which is externally fixedly connected to the inside of the double-layer polyimide film strip 22. The mica strip has excellent high temperature resistance and non-combustible properties. When exposed to high temperature and open flame, the mica sheets in the mica strip will expand rapidly to form a dense heat insulation barrier, which can effectively prevent the flame and heat from being further transferred inward, protecting the internal conductor components and insulation layer components from flame attack, greatly improving the safety of the electronic connection cable in fire hazard environments, and preventing the cable from causing internal short circuits or other faults due to external fire sources. The fireproof mica strip 31 is internally fixedly connected to the outside of the alumina filling layer 23, and the fluororubber outer layer 25 is externally fixedly connected to a fireproof coating 32. When exposed to high temperature or flame, the fireproof coating 32 can further play a flame-retardant role, form a flame-retardant carbonized layer, etc., prevent the spread of flames, and enhance the overall fire resistance of the electronic connection cable.
[0044] Specifically, when the fireproof mica tape 31 encounters a high temperature and open flame, its mica sheets expand to form a heat insulation barrier, blocking flames and heat, and improving the safety of the electronic connection cable in fire hazard environments. The fireproof coating 32 on the outside of the fluororubber outer layer 25 further retards the flame by forming a flame-retardant carbonized layer when it encounters high temperature or flame. Together with the fireproof mica tape 31, it enhances the overall fireproof performance of the electronic connection cable and ensures its safe operation in fire scenarios.
[0045] Working principle: Current is transmitted through the silver-plated copper core wire in core wire 1. The silver plating layer reduces contact resistance. The nickel alloy braided layer 2102 in conductive component 21 reflects radiant heat and improves mechanical strength. The conductive filler layer 2101 assists in conduction. The double-layer polyimide film tape 22 provides basic insulation. The alumina filler layer 23 fills the gaps between its layers and is fixed by a thermosetting process. Its particle size is 5μm and its purity is ≥99.5%, which can enhance thermal conductivity and prevent local overheating. The stainless steel wire braided sleeve 24 is woven at a 54° cross angle onto the double-layer polyimide film tape 2. 2. Externally, it disperses mechanical stress. The fluororubber outer layer 25, with a Shore hardness of 70±5, is extruded and coated on the stainless steel wire braided sheath 24 to isolate external corrosive media. When exposed to high temperature or flame, the fireproof mica tape 31 tightly wraps around the outer surface of the stainless steel wire braided sheath. When exposed to high temperature and open flame, the mica sheet rapidly expands to form a dense heat insulation barrier. The fireproof coating 32 is coated on the fluororubber outer layer 25 to further retard the flame. These structures work together to maintain stable electrical performance of the cable at 250℃, effectively improving safety in fire-prone environments.
[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high temperature resistant electronic connecting wire comprising a core wire (1), characterized in that: The core wire (1) is fixedly connected to a high temperature resistant mechanism (2), and the high temperature resistant mechanism (2) is fixedly connected to a flame retardant mechanism (3). The high-temperature resistant mechanism (2) includes a conductive component (21), which is internally fixedly connected to the outside of the core wire (1). A double-layer polyimide film strip (22) is fixedly connected to the outside of the conductive component (21). An alumina filling layer (23) is fixedly connected to the inside of the double-layer polyimide film strip (22). A stainless steel wire braided sleeve (24) is fixedly connected to the outside of the double-layer polyimide film strip (22). A fluororubber outer layer (25) is fixedly connected to the outside of the alumina filling layer (23).
2. The high temperature resistant electronic connecting wire according to claim 1, wherein: The conductive component (21) includes a conductive filling layer (2101), the interior of which is fixedly connected to the exterior of the core wire (1), and a nickel alloy braided layer (2102) is fixedly connected to the exterior of the conductive filling layer (2101).
3. The high temperature resistant electronic connecting wire according to claim 2, wherein: The flame-retardant mechanism (3) includes a fireproof mica tape (31), the interior of which is fixedly connected to the exterior of the alumina filling layer (23), and the exterior of the fluororubber outer layer (25) is fixedly connected with a fireproof coating (32).
4. The high temperature resistant electronic connecting wire according to claim 3, wherein: The fireproof mica tape (31) is externally fixedly connected to the inside of the double-layer polyimide film tape (22), and the nickel alloy braided layer (2102) is externally fixedly connected to the inner wall of the double-layer polyimide film tape (22).
5. A high-temperature resistant electronic connecting wire according to claim 2, characterized in that: The core wires (1) are arranged in a concentric twisted manner, and the double-layer polyimide film tape (22) is spirally wound around the outer surface of the nickel alloy braided layer (2102).
6. The high-temperature resistant electronic connecting wire according to claim 1, characterized in that: The alumina filler layer (23) is filled into the interlayer gap of the double-layer polyimide film strip (22) by a thermosetting process, and the stainless steel wire braided sleeve (24) is woven at a 54° cross angle on the outer surface of the double-layer polyimide film strip (22).
7. The high-temperature resistant electronic connecting wire according to claim 1, characterized in that: The fluororubber outer layer (25) is extruded and coated on the outer surface of the stainless steel wire braided sleeve (24). The double-layer polyimide film strip (22) has a thickness of 0.05mm ± 0.005mm and a width of 10mm.
8. A high-temperature resistant electronic connecting wire according to claim 1, characterized in that: The stainless steel wire braided sleeve (24) has a single wire diameter of 0.12 mm, the fluororubber outer layer (25) has a Shore hardness of 70±5, and the alumina filling layer (23) has a particle size of 5 μm and a purity of ≥99.5%.