High-elasticity bending-resistant connecting line

Abstract

The invention belongs to the technical field of cables, and particularly discloses a high-elasticity bending-resistant connecting line which comprises an outer protective layer, and the outer protective layer comprises a fixing part, an outer protective layer body, a first connecting part, a first inner protective layer, a second inner protective layer, a fixing clamping groove and a second connecting part. One end of the outer protective layer body is connected with one end of the first connecting part, the other end of the first connecting part is connected with a second inner protective layer, the other end of the outer protective layer body is connected with one end of the second connecting part, and the other end of the outer protective layer body is further connected with one end of the fixing part. A fixing clamping groove is formed between the fixing component and the second connecting component, the second inner protection layer is clamped into the fixing clamping groove, and a plurality of first transmission units are arranged in the space between the outer protection layer body and the first inner protection layer. The invention has the beneficial effects of simple structure, convenience in construction, good mechanical property, convenience in molding and the like.

Description

Technical Field

[0001] This invention belongs to the field of cable technology, and in particular discloses a highly elastic and bend-resistant connecting wire. Background Technology

[0002] With the development of industries such as electric vehicles and industrial robots, there is a greater need for connecting cables that can be used in various complex scenarios such as frequent vibrations.

[0003] In the existing technology, CN117198619A discloses a flame-retardant cable for preventing electrical interference, including a reinforcing core, an outer ring wrapped around the reinforcing core, a cable disposed outside the outer ring, a flame-retardant structure disposed outside the reinforcing core, and a connecting structure disposed on one side outside the reinforcing core. Both the connecting structure and the flame-retardant structure can be used in conjunction with the reinforcing core. The flame-retardant structure includes a connecting plate, fixing screws, a flame-retardant ring, abrasion-resistant sheet, reinforcing block, and protective pad. The reinforcing core is provided with a protective pad on the outside. The material of the protective pad is fire-resistant fiber, and the protective pad is provided with a flame-retardant ring on the outside.

[0004] The aforementioned existing technologies have the following advantages: complex structure and low production efficiency; inconvenient to open the flame-retardant structure to access the internal electrical unit, resulting in low construction efficiency; and relatively poor overall performance in terms of bending and impact resistance. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to disclose a highly elastic and bend-resistant connecting wire, which is achieved through the following technical solution.

[0006] A highly elastic and bend-resistant connecting wire includes an outer sheath, which comprises a fixing component, an outer sheath body, a first connecting component, a first inner sheath, a second inner sheath, a fixing groove, and a second connecting component. Within the same cross-section, the outer edge of the outer sheath body is arc-shaped. One end of the outer sheath body is connected to one end of the first connecting component, and the other end of the first connecting component is connected to a second inner sheath. The width of the first connecting component is smaller than the diameter of the second inner sheath. The other end of the outer sheath body is connected to one end of the second connecting component and also to one end of the fixing component. The second connecting component is located inside the outer sheath body. The first inner sheath and the outer sheath body are coaxial. A fixing groove is formed between the fixing component and the second connecting component. The opening width of the fixing groove is smaller than the diameter of the second inner sheath. The second inner sheath is inserted into the fixing groove, and the second inner sheath is in contact with the inner wall of the fixing groove. The fixing component is attached to the first connecting component. Multiple first transmission units are provided in the space between the outer sheath and the first inner sheath; The first inner sheath contains at least one second transmission unit, and the second inner sheath contains at least one second transmission unit or a reinforcing member. The outer protective layer is integrally molded, and the material of the outer protective layer is a highly elastic material.

[0007] The aforementioned high-elasticity, bend-resistant connecting cable also includes a third inner sheath outside the first transmission unit. The third inner sheath is connected to the outer sheath body via a connecting component. The third inner sheath, the outer sheath body, and the connecting component are made of the same material and are integrally formed.

[0008] The aforementioned highly elastic and bend-resistant connecting cable has a second transmission unit within the first inner sheath that is a tight-buffered optical fiber.

[0009] The aforementioned high-elasticity, bend-resistant connecting cable has a left semi-circular groove formed on the right side wall of the first inner sheath and a right semi-circular groove formed on the left side wall of the second inner sheath. The left and right semi-circular grooves are combined to form a combined cavity, and at least one tight-buffered optical fiber is provided in the combined cavity.

[0010] The aforementioned high-elasticity, bend-resistant connector has a tight-buffered optical fiber consisting of an optical fiber and a tight-buffered layer extruded outside the optical fiber.

[0011] The aforementioned high-elasticity, bend-resistant connecting wire has an outer edge of the outer sheath and an outer edge of the fixing component that merge into a circle.

[0012] The aforementioned high-elasticity, bend-resistant connecting cable, the first transmission unit comprises, from the inside out, a conductor, an insulation layer, and a beveled shielding layer.

[0013] The aforementioned high-elasticity, bend-resistant connecting wire also has cotton yarn filling the gaps within the outer sheath.

[0014] The aforementioned high-elasticity, bend-resistant connecting wire has an insulation layer and a third inner sheath made of thermoplastic polyester elastomer (TPEE) insulation material.

[0015] The aforementioned high-elasticity, bend-resistant connecting wire has a reinforcing member made of multiple stranded steel wires.

[0016] This application has the following beneficial effects: 1. The fixing component and the first connecting component can be quickly separated, allowing for quick access to the conductor inside the second inner sheath. The second inner sheath and the fixing slot can also be quickly detached, enabling the quick removal of the first transmission unit inside. This facilitates construction and also allows for direct opening of the outer sheath body for inspection and maintenance of the first transmission unit.

[0017] 2. During installation, the fixing component can be oriented towards the side that is frequently subjected to force. Since the fixing component and the first connecting component are closely fitted, the combined thickness of the two is large, which can provide stronger impact resistance.

[0018] 3. When the conductor in the second inner sheath is replaced by a reinforcing member, and the fixing member and the reinforcing member can be oriented towards the side that is frequently subjected to force during installation, the impact resistance can be further improved, while the compressive and tensile properties can be enhanced.

[0019] 4. When a tight-buffered optical fiber is installed inside the first inner sheath, since the first inner sheath is located in the middle of the entire cable, the surrounding conductors or reinforcements provide better protection for the fragile internal optical fiber.

[0020] 5. By setting up connecting components and connecting the outer sheath body and the first transmission unit through the connecting components, the first transmission units inside the outer sheath body can be arranged sequentially on the inner wall of the outer sheath body after it is fully unfolded, which is easy to distinguish. At the same time, when taking it out, you only need to tear the corresponding connecting component, take out the first transmission unit, and restore the circular cable structure. The first transmission units inside will not be disordered, and the absence of a certain first transmission unit will not cause the other first transmission units to detach from the outer sheath body.

[0021] 6. A combined cavity is set up, which is formed by the merging of a left semi-circular groove and a right semi-circular groove. When taking out the tightly packed optical fiber inside the combined cavity, it is only necessary to remove the second inner sheath from the fixed slot. It can be restored after taking out, without the need to use blades or other tools to damage the cable structure.

[0022] 7. The positions of the first transmission unit, the first inner sheath, and the second inner sheath are fixed to each other, eliminating the need for binding yarn or strapping materials, thus saving costs and improving production efficiency.

[0023] 8. The outer protective layer is integrally molded, making the structure simpler and molding easier. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of the present invention.

[0025] Figure 2 This is the front view of Embodiment 1 of the present invention.

[0026] Figure 3 This is a three-dimensional structural schematic diagram of Embodiment 2 of the present invention.

[0027] Figure 4 This is the front view of Embodiment 2 of the present invention.

[0028] Figure 5 This is a three-dimensional structural schematic diagram of Embodiment 3 of the present invention.

[0029] Figure 6 This is the front view of Embodiment 3 of the present invention.

[0030] Figure 7 This is a three-dimensional structural schematic diagram of Embodiment 4 of the present invention.

[0031] Figure 8 This is the front view of Embodiment 4 of the present invention.

[0032] In the figure, the corresponding figures are as follows: 1. Outer sheath, 11. Fixing component, 12. Outer sheath body, 13. First connecting component, 14. First inner sheath, 15. Second inner sheath, 16. Fixing slot, 17. Second connecting component, 2. Conductor, 3. Cotton yarn, 4. First transmission unit, 41. Oblique shielding layer, 42. Insulating layer, 43. Third inner sheath, 44. Connecting component, 5. Tight-fitting optical fiber, 6. Combined cavity. Detailed Implementation

[0033] Example 1: As Figure 1 or Figure 2 A highly elastic and bend-resistant connecting wire includes an outer sheath 1. The outer sheath 1 includes a fixing component 11, an outer sheath body 12, a first connecting component 13, a first inner sheath 14, a second inner sheath 15, a fixing slot 16, and a second connecting component 17. Within the same cross-section, the outer edge of the outer sheath body 12 is arc-shaped. One end of the outer sheath body 12 is connected to one end of the first connecting component 13, and the other end of the first connecting component 13 is connected to a second inner sheath 15. The width of the first connecting component 13 is smaller than the diameter of the second inner sheath 15. The other end of the outer sheath body 12 is connected to one end of the second connecting component 17. The outer protective layer body 12 is connected to one end of the fixing component 11. The second connecting component 17 is located inside the outer protective layer body 12. The first inner protective layer 14 and the outer protective layer body 12 are coaxial. A fixing groove 16 is formed between the fixing component 11 and the second connecting component 17. The opening width of the fixing groove 16 is smaller than the diameter of the second inner protective layer 15. The second inner protective layer 15 is inserted into the fixing groove 16 and is attached to the inner wall of the fixing groove 16. The fixing component 11 is attached to the first connecting component 13, and the outer edge of the outer protective layer body 12 and the outer edge of the fixing component 11 are combined to form a circle. Four first transmission units 4 are provided in the space between the outer sheath body 12 and the first inner sheath 14. The first transmission unit 4 includes, from the inside to the outside, a conductor 2, an insulating layer 42 and a slanted shielding layer 41. A conductor 2 is provided in each of the first inner sheath 14 and the second inner sheath 15; The gaps inside the outer sheath 12 are also filled with cotton yarn 3, which helps to alleviate core wire crosstalk and fill the gaps to ensure a round appearance.

[0034] In the aforementioned high-elasticity, bend-resistant connecting cable, the first transmission unit 4 is tangent to both the outer sheath body 12 and the first inner sheath 14.

[0035] Example 2: As Figure 3 or Figure 4A highly elastic, bend-resistant connector includes an outer sheath 1. The outer sheath 1 includes a fixing component 11, an outer sheath body 12, a first connecting component 13, a first inner sheath 14, a second inner sheath 15, and a second connecting component 17. Within the same cross-section, the outer edge of the outer sheath body 12 is arc-shaped. One end of the outer sheath body 12 is connected to one end of the first connecting component 13, and the other end of the first connecting component 13 is connected to a second inner sheath 15. The width of the first connecting component 13 is smaller than the diameter of the second inner sheath 15. The other end of the outer sheath body 12 is connected to one end of the second connecting component 17. The other end of the outer protective layer body 12 is also connected to one end of the fixing component 11. The second connecting component 17 is located inside the outer protective layer body 12. The first inner protective layer 14 and the outer protective layer body 12 are coaxial. A fixing groove 16 is formed between the fixing component 11 and the second connecting component 17. The opening width of the fixing groove 16 is smaller than the diameter of the second inner protective layer 15. The second inner protective layer 15 is inserted into the fixing groove 16 and the second inner protective layer 15 is attached to the inner wall of the fixing groove 16. The fixing component 11 is attached to the first connecting component 13, and the outer edge of the outer protective layer body 12 and the outer edge of the fixing component 11 are combined to form a circle. Four first transmission units 4 are provided in the space between the outer sheath body 12 and the first inner sheath 14. The first transmission unit 4 includes, from the inside to the outside, a conductor 2, an insulating layer 42, a slanted shielding layer 41 and a third inner sheath 43. The third inner sheath 43 and the outer sheath body 12 are connected by a connecting component 44. The third inner sheath 43, the outer sheath body 12 and the connecting component 44 are made of the same material and are integrally formed. A conductor 2 is provided in each of the first inner sheath 14 and the second inner sheath 15; The gaps inside the outer sheath 12 are also filled with cotton yarn 3, which helps to alleviate core wire crosstalk and fill the gaps to ensure a round appearance.

[0036] Example 3: As Figure 5 or Figure 6A highly elastic, bend-resistant connector includes an outer sheath 1. The outer sheath 1 includes a fixing component 11, an outer sheath body 12, a first connecting component 13, a first inner sheath 14, a second inner sheath 15, and a second connecting component 17. Within the same cross-section, the outer edge of the outer sheath body 12 is arc-shaped. One end of the outer sheath body 12 is connected to one end of the first connecting component 13, and the other end of the first connecting component 13 is connected to a second inner sheath 15. The width of the first connecting component 13 is smaller than the diameter of the second inner sheath 15. The other end of the outer sheath body 12 is connected to one end of the second connecting component 17. The other end of the outer protective layer body 12 is also connected to one end of the fixing component 11. The second connecting component 17 is located inside the outer protective layer body 12. The first inner protective layer 14 and the outer protective layer body 12 are coaxial. A fixing groove 16 is formed between the fixing component 11 and the second connecting component 17. The opening width of the fixing groove 16 is smaller than the diameter of the second inner protective layer 15. The second inner protective layer 15 is inserted into the fixing groove 16 and the second inner protective layer 15 is attached to the inner wall of the fixing groove 16. The fixing component 11 is attached to the first connecting component 13, and the outer edge of the outer protective layer body 12 and the outer edge of the fixing component 11 are combined to form a circle. Four first transmission units 4 are provided in the space between the outer sheath body 12 and the first inner sheath 14. The first transmission unit 4 includes, from the inside to the outside, a conductor 2, an insulating layer 42 and a slanted shielding layer 41. The first inner sheath 14 contains at least one tight-fitting optical fiber 5, and the second inner sheath 15 contains a conductor 2. The gaps inside the outer sheath 12 are also filled with cotton yarn 3, which helps to alleviate core wire crosstalk and fill the gaps to ensure a round appearance.

[0037] Example 4: Figure 7 or Figure 8A highly elastic and bend-resistant connecting wire includes an outer sheath 1. The outer sheath 1 includes a fixing component 11, an outer sheath body 12, a first connecting component 13, a first inner sheath 14, a second inner sheath 15, and a second connecting component 17. Within the same cross-section, the outer edge of the outer sheath body 12 is arc-shaped. One end of the outer sheath body 12 is connected to one end of the first connecting component 13, and the other end of the first connecting component 13 is connected to a second inner sheath 15. The width of the first connecting component 13 is smaller than the diameter of the second inner sheath 15. The other end of the outer sheath body 12 is connected to one end of the second connecting component 17. The other end of the outer sheath body 12 is also connected to one end of the fixing component 11. The second connecting component 17 is located inside the outer sheath body 12. The first inner sheath 14 and the outer sheath body 12 are coaxial. A fixing groove 16 is formed between the fixing component 11 and the second connecting component 17. The opening width of the fixing groove 16 is smaller than the diameter of the second inner sheath 15. The second inner sheath 15 is inserted into the fixing groove 16 and the second inner sheath 15 is attached to the inner wall of the fixing groove 16. The fixing component 11 is attached to the first connecting component 13, and the outer edge of the outer sheath body 12 and the outer edge of the fixing component 11 are combined to form a circle. Four first transmission units 4 are provided in the space between the outer sheath body 12 and the first inner sheath 14. The first transmission unit 4 includes, from the inside to the outside, a conductor 2, an insulating layer 42 and a slanted shielding layer 41. Each of the first inner sheath 14 and the second inner sheath 15 is provided with a conductor 2. The right side wall of the first inner sheath 14 forms a left semi-circular groove, and the left side wall of the second inner sheath 15 forms a right semi-circular groove. The left semi-circular groove and the right semi-circular groove are combined to form a combined cavity 6. At least one tight-fitting optical fiber 5 is provided in the combined cavity 6. The gaps inside the outer sheath body 12 are also filled with cotton yarn 3. The cotton yarn plays a role in relieving core wire crosstalk and filling to ensure a round appearance. In addition, the cotton yarn can also be used as a tear rope to improve the efficiency of sheath opening.

[0038] The aforementioned high-elasticity, bend-resistant connecting wire has an outer sheath 1 integrally formed.

[0039] The aforementioned high-elasticity, bend-resistant connecting wire has insulation layer 42 and third inner sheath 43 made of thermoplastic polyester elastomer (TPEE) insulation material.

[0040] Thermoplastic polyester elastomer (TPEE) insulation material has the following properties: In terms of insulation performance: high volume resistivity: ≥10 16 Ω·cm (23℃), far exceeding the requirements of general insulating materials; stable dielectric constant: 3.1-3.5 at 1kHz, excellent stability at high frequencies, suitable for high-frequency applications such as 5G communication; strong arc resistance, can withstand long-term arcing without breakdown.

[0041] ②. Durability: TPEE has high resistance to bending fatigue and can withstand more than 1 million bending cycles without insulation failure, making it suitable for cables and connectors that are frequently bent; it has good impact resistance and can effectively absorb external impacts at low temperatures of -40℃ to avoid insulation layer cracking; it has good creep resistance and can maintain good dimensional stability under long-term stress, with high uniformity of insulation layer thickness, and will not experience a decrease in insulation performance due to creep.

[0042] ③. Chemical resistance: TPEE has strong resistance to acids, alkalis, oils and solvents, and its insulation performance is not affected in a variety of chemical media.

[0043] ④. Environmental and safety characteristics: Halogen-free: Complies with RoHS halogen-free standards and does not produce toxic hydrogen halide gas when burned.

[0044] ⑤. Low smoke and non-toxic: Low smoke production during combustion, with a smoke density rating (SDR) ≤50.

[0045] The aforementioned high-elasticity, bend-resistant connecting wire has an outer sheath 1 made of polyether-type halogen-free flame-retardant TPU sheath material.

[0046] In the aforementioned high-elasticity, bend-resistant connecting wire, the conductor 2 within the second inner sheath 15 can be replaced by a reinforcing member.

[0047] The aforementioned high-elasticity, bend-resistant connecting cable features a reinforcing member made of multiple strands of fine steel wires to enhance its bend resistance.

[0048] The aforementioned high-elasticity, bend-resistant connector has a tight-buffered optical fiber 5 consisting of an optical fiber and a tight-buffered layer extruded outside the optical fiber.

[0049] Conductor 2 is made of copper wire with high twisting roundness, smooth surface, low cost, and high conductivity, plus a copper foil wire and a 200D aramid reinforcement. The copper foil wire has excellent flexibility and is resistant to vibration and tension. It is made by twisting multiple extremely thin copper foil strips, with a bending radius only 1 / 2 that of traditional round copper wire, making it more suitable for repeated bending in confined spaces, and its bending life can reach more than 100,000 cycles. In scenarios with frequent vibration, such as industrial robots and automotive wiring harnesses, the multi-layer structure of the copper foil wire can disperse stress and reduce the risk of breakage. Its tensile strength is 20% higher than that of round copper wire of the same cross-sectional area. Aramid is a high-performance synthetic fiber that also has high strength, lightweight and excellent chemical resistance.

[0050] This application has the following beneficial effects: 1. The fixing component 11 and the first connecting component 13 can be quickly separated, allowing for quick access to the conductor 2 inside the second inner sheath 15. The second inner sheath 15 and the fixing slot 16 can also be quickly detached to remove the first transmission unit 4 inside, making construction convenient. At the same time, it is easy to directly open the outer sheath body 12 to inspect the first transmission unit 4, etc.

[0051] 2. During installation, the fixing component 11 can be oriented towards the side that is frequently subjected to force. Since the fixing component 11 and the first connecting component 13 are in close contact, the combined thickness of the two is large, which can provide stronger impact resistance.

[0052] 3. When the conductor 2 in the second inner sheath 15 is replaced by a reinforcing member, and the fixing member 11 and the reinforcing member can be oriented toward the side that is frequently subjected to force during installation, the impact resistance can be further improved, while the compressive and tensile properties can be enhanced.

[0053] 4. When a tight-buffered optical fiber 5 is installed inside the first inner sheath 14, since the first inner sheath 14 is located in the middle of the entire cable, the surrounding conductors or reinforcements provide better protection for the fragile internal optical fiber.

[0054] 5. A connecting component 44 is provided to connect the outer sheath body 12 and the first transmission unit 4. This allows the first transmission units 4 inside the outer sheath body 12 to be arranged sequentially on the inner wall of the outer sheath body 12 after it is fully unfolded, making them easy to distinguish. At the same time, when taking them out, only the corresponding connecting component 44 needs to be torn off. After taking out the first transmission unit 14, the circular cable structure is restored. The first transmission units 4 inside will not be disordered, and the absence of one first transmission unit 4 will not cause the other first transmission units 4 to detach from the outer sheath body 12.

[0055] 6. A combined cavity 6 is provided, which is formed by the combination of a left semi-circular groove and a right semi-circular groove. When the tight-fitting optical fiber 5 inside the combined cavity 6 is taken out, it is only necessary to remove the second inner sheath 15 from the fixing slot 16. It can be restored after being taken out, without the need to use blades or other tools to damage the cable structure.

[0056] 7. The positions of the first transmission unit 4, the first inner sheath 14, and the second inner sheath 15 are fixed to each other, eliminating the need for binding yarn or strapping materials, thus saving costs and improving production efficiency.

[0057] 8. The outer protective layer is integrally molded, which makes the structure simpler and the molding process easier.

[0058] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A highly elastic, bend-resistant connecting wire, comprising an outer sheath (1), characterized in that, The outer protective layer (1) includes a fixing component (11), an outer protective layer body (12), a first connecting component (13), a first inner protective layer (14), a second inner protective layer (15), a fixing slot (16), and a second connecting component (17). Within the same cross-section, one end of the outer protective layer body (12) is connected to one end of the first connecting component (13), and the other end of the first connecting component (13) is connected to a second inner protective layer (15). The width of the first connecting component (13) is smaller than the diameter of the second inner protective layer (15). The other end of the outer protective layer body (12) is connected to one end of the second connecting component (17). The other end of the outer sheath body (12) is also connected to one end of the fixing component (11). The second connecting component (17) is located inside the outer sheath body (12). The first inner sheath (14) and the outer sheath body (12) are coaxial. A fixing slot (16) is formed between the fixing component (11) and the second connecting component (17). The opening width of the fixing slot (16) is smaller than the diameter of the second inner sheath (15). The second inner sheath (15) is inserted into the fixing slot (16), and the second inner sheath (15) is attached to the inner wall of the fixing slot (16). The fixing component (11) is attached to the first connecting component (13). Multiple first transmission units (4) are provided in the space between the outer sheath body (12) and the first inner sheath (14); The first inner sheath (14) is provided with at least one second transmission unit, and the second inner sheath (15) is provided with at least one second transmission unit or a reinforcing member; The outer protective layer (1) is integrally formed, and the outer protective layer material is a highly elastic material.

2. The high-elasticity, bend-resistant connecting wire according to claim 1, characterized in that, The first transmission unit (4) is also provided with a third inner protective layer (43). The third inner protective layer (43) is connected to the outer protective layer body (12) through a connecting component (44). The third inner protective layer (43), the outer protective layer body (12) and the connecting component (44) are made of the same material and are integrally formed.

3. The high-elasticity, bend-resistant connecting wire according to claim 1, characterized in that, The second transmission unit within the first inner sheath (14) is a tight-buffered optical fiber (5).

4. The high-elasticity, bend-resistant connecting wire according to claim 1, characterized in that, The right side wall of the first inner sheath (14) forms a left semi-circular groove, and the left side wall of the second inner sheath (15) forms a right semi-circular groove. The left and right semi-circular grooves are combined to form a combined cavity (6), and at least one tight-fitting optical fiber (5) is provided in the combined cavity (6).

5. A highly elastic, bend-resistant connecting wire according to claim 4, characterized in that, The tight-buffered optical fiber (5) consists of an optical fiber and a tight-buffered layer extruded outside the optical fiber.

6. A highly elastic, bend-resistant connecting wire according to any one of claims 1 to 5, characterized in that, The outer edge of the outer protective layer body (12) and the outer edge of the fixing component (11) merge into a circle.

7. A highly elastic, bend-resistant connecting wire according to claim 6, characterized in that, The first transmission unit (4) includes, from the inside out, a conductor (2), an insulating layer (42), and a slanted shielding layer (41).

8. A highly elastic, bend-resistant connecting wire according to claim 7, characterized in that, The gaps inside the outer protective layer (12) are also filled with cotton yarn (3).

9. A highly elastic, bend-resistant connecting wire according to claim 8, characterized in that, The insulation layer (42) and the third inner sheath (43) are made of thermoplastic polyester elastomer (TPEE) insulation material.

10. A highly elastic, bend-resistant connecting wire according to claim 9, characterized in that, The reinforcing component is made of multiple stranded steel wires.

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