Anti-tangle, stretch-resistant power cord

Abstract

The utility model relates to the technical field of electric wire and cable, concretely is anti -winding tensile power cord, and the connecting line body from inside to outside includes glass fiber reinforced nylon anti -twist center core, multiple strands of oxygen -free copper wire stranded conductor, composite insulating layer, tinned copper wire braided shielding layer and polyurethane elastomer goose neck sheath layer in proper order, and multiple strands of conductor are stranded around the center core, and the flexibility and fatigue resistance are effectively improved, the composite insulating layer gives consideration to high insulating property and wear -resisting oil resistance, the braided shielding layer enhances the anti -electromagnetic interference ability, the goose neck sheath surface is smooth and has elasticity memory, significantly reduces winding and resists tensile deformation, and the connecting line body both ends are respectively equipped with the plug and the connector, and the plug sheath section and the connector insertion groove interference fit, and are locked through the tail end thread, ensure that the connection is firm, waterproof and prevents from falling off. The power cord has excellent torsional resistance, tensile resistance, anti -winding, shielding and reliable connection performance, is suitable for high -frequency movement or complex wiring scene, and significantly improves the use safety and life.

Description

Technical Field

[0001] This utility model relates to the field of wire and cable technology, specifically to an anti-tangle and tensile-resistant power cord. Background Technology

[0002] Power cords, as crucial carriers of power and signal transmission, are widely used in industrial equipment, medical instruments, stage lighting, home appliances, and mobile terminals. In practical applications, especially in scenarios involving frequent movement, bending, or dense wiring, traditional power cords commonly suffer from problems such as easy tangling, easy stretching and deformation, poor torsional resistance, and insufficient shielding. Conventional structures often use a single PVC or rubber sheath to encase stranded copper conductors, lacking central support, leading to conductor fatigue fracture and insulation cracking after repeated bending. Furthermore, their smooth cylindrical shape makes them prone to tangling during storage or stacking, affecting operational efficiency and accelerating sheath wear.

[0003] To improve flexibility, multi-strand fine copper wires are typically used to twist the conductor, but this does not solve the overall torsion resistance problem. When the cable is twisted, the internal stress is uneven, and it is still prone to birdcage-like stranding. In addition, ordinary insulation materials have poor oil resistance and weather resistance, and are prone to aging in high temperature or chemical environments. If the shielding layer uses aluminum foil or ordinary braiding, it has defects such as low shielding effectiveness, easy oxidation, and insufficient mechanical strength. Moreover, existing plug-in structures mostly rely on snaps or simple plugging and unplugging, resulting in poor connection reliability. They are prone to loosening under vibration or tension, causing poor contact or even the risk of electric arc. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides an anti-tangle and tensile-resistant power cord.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: The anti-tangle and anti-stretch power cord of this utility model includes a connecting wire body, which, from the inside out, includes an anti-torsion center core, a multi-strand copper core conductor, a composite insulation layer, a braided shielding layer, and a gooseneck sheath layer; the multi-strand copper core conductor is twisted around the anti-torsion center core, the composite insulation layer covers the outside of the multi-strand copper core conductor, the braided shielding layer wraps around the composite insulation layer, and the gooseneck sheath layer covers the outside of the braided shielding layer.

[0007] Preferably, the anti-torsion core material is glass fiber reinforced nylon, and the multi-strand copper core conductor is formed by twisting together several strands of oxygen-free copper wire.

[0008] More preferably, the composite insulating layer comprises an inner XLPE insulating layer and an outer TPU insulating layer.

[0009] Preferably, the braided shielding layer is made of tin-plated copper wire, and the gooseneck sheath layer is made of polyurethane elastomer.

[0010] Preferably, one end of the connecting wire is provided with a plug, the other end of the connecting wire is provided with a connector, the connector is provided with a slot, the slot is provided with a conductor groove, the bottom end of the plug is provided with a sheath, the plug is adapted to the conductor groove, and the sheath section of the plug is interference-fitted with the slot.

[0011] More preferably, the plug has a cylindrical structure, and the tail end of the sheath is connected to the slot via a threaded structure.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides an anti-tangling and tensile-resistant power cord, which has the following beneficial effects: This technical solution adopts a multi-layer composite structure design. A glass fiber reinforced nylon anti-torsion core is set in the center to effectively suppress the internal stress concentration generated during frequent bending or twisting of the cable and prevent conductor deformation. Multiple strands of oxygen-free copper wire are evenly distributed around the central core, taking into account both high conductivity and flexibility. The composite insulation layer consists of an inner layer of cross-linked polyethylene and an outer layer of thermoplastic polyurethane, which has excellent electrical insulation, oil resistance and wear resistance. The outer tin-plated copper wire braided shielding layer effectively suppresses electromagnetic interference and ensures the stability of signal or power transmission. The outermost gooseneck sheath is made of highly elastic polyurethane material with a smooth surface and memory rebound characteristics, which greatly reduces the risk of cable entanglement and can withstand repeated bending and stretching.

[0014] The connector and plug employ a cylindrical interference fit structure. The plug sheath fits tightly into the slot and is locked in place by threads, ensuring a secure, waterproof, and non-detachable connection, preventing poor contact or arcing risks due to loosening. The overall structure works synergistically to enable the power cord to perform exceptionally well in high-frequency movement or complex wiring scenarios such as industrial equipment, medical instruments, and stage lighting. This structure enhances the tensile strength, bend life, and reduces tangling, while also possessing excellent oil resistance, weather resistance, and flame retardant properties, meeting high-reliability power requirements and offering advantages in safety, durability, and ease of management. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall equipment structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the connector of this utility model; Figure 3 This is a schematic diagram of the internal structure of the connecting wire of this utility model; In the diagram: 1. Connecting cable; 2. Plug; 3. Connector; 4. Sheath; 5. Conductor groove; 6. Slot; 7. Anti-torsion center core; 8. Multi-strand copper core conductor; 9. XLPE insulation layer; 10. Braided shielding layer; 11. Gooseneck sheath layer; 12. TPU insulation layer. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-3 The present invention relates to an anti-tangle and tensile-resistant power cord, comprising a connecting wire body 1, wherein the connecting wire body 1 comprises, from the inside out, an anti-torsion center core 7, a multi-strand copper core conductor 8, a composite insulation layer, a braided shielding layer 10, and a gooseneck sheath 4 layers; the multi-strand copper core conductor 8 is twisted around the anti-torsion center core 7, the composite insulation layer covers the outside of the multi-strand copper core conductor 8, the braided shielding layer 10 wraps around the composite insulation layer, and the gooseneck sheath 4 layers cover the outside of the braided shielding layer 10.

[0018] This technical solution is based on core anti-torsion, multi-layer reinforcement, and tight connection as its core logic. The anti-torsion central core 7 provides axial torsional and tensile resistance, while multiple copper conductors 8 are twisted around the central core to ensure power transmission. A composite insulation layer, a braided shielding layer 10, and a gooseneck sheath 4 layers form a triple guarantee of insulation, protection, and shaping. Combined with the interference fit and threaded fixing structure of the plug 2 and connector 3, it achieves multiple effects of anti-tangling, tensile strength, and stable transmission. Its core advantage lies in solving the pain points of traditional power cords—such as easy tangling, poor tensile strength, and loose connections—through the synergy of material selection and structural design, making it suitable for complex usage scenarios.

[0019] The anti-torsion center core 7 is made of glass fiber reinforced nylon, and the multi-strand copper core conductor 8 is made of several strands of oxygen-free copper wire twisted together and arranged in a spiral around the anti-torsion center core 7.

[0020] Glass fiber reinforced nylon combines high strength and torsion resistance. As the central support of the power cord, it can resist axial tensile force and radial torsion force, preventing the internal conductor from breaking due to pulling or twisting. The multi-strand conductor formed by twisting oxygen-free copper wires is more flexible than a single copper wire, and can disperse external impacts. Combined with the twisted structure around the central core, it further improves the overall tensile strength and ensures the continuity of power transmission. The synergistic effect of the stranded structure and the anti-torsion center core 7 reduces the tendency of the power cord to automatically tangle during use, making the wire less prone to knotting and improving the anti-tangling effect.

[0021] The composite insulation layer consists of an inner cross-linked polyethylene (XLPE) insulation layer and an outer thermoplastic polyurethane (TPU) insulation layer, which are wrapped around the outside of the multi-strand copper core conductor 8.

[0022] The inner XLPE insulation layer 9 has excellent electrical insulation properties, high temperature resistance, long-term operating temperature of -50℃~90℃ and chemical stability, which can effectively isolate the conductor from the external structure and prevent leakage risk; The outer TPU insulation layer 12 is tough, wear-resistant, and bend-resistant, and can resist physical damage such as external friction and extrusion, protecting the inner XLPE insulation layer 9 from damage; The double-layer insulation structure ensures both electrical safety and physical protection, extending service life by more than 2 times compared to a single insulation layer, making it suitable for complex environments such as outdoor and industrial settings.

[0023] The braided shielding layer 10 is made of tin-plated copper wire and wraps the composite insulation layer; the gooseneck sheath 4 is made of polyurethane elastomer material and covers the outside of the braided shielding layer 10.

[0024] The tin-plated copper wire braided shielding layer 10 can effectively shield external electromagnetic interference and prevent the power signal transmitted by the power line from being affected. At the same time, the tin plating layer prevents the copper wire from oxidizing and improves the service life of the shielding layer. The four-layer gooseneck sheath made of polyurethane elastomer has shape-forming and highly elastic properties, allowing it to be bent into specific shapes and held in place as needed, reducing tangling caused by the wires moving around. At the same time, its excellent wear resistance and tear resistance further enhance the overall protection of the power cord and resist external physical impacts.

[0025] The plug 2 has a cylindrical structure with a sheath 4 at the bottom; the connector 3 has a slot 6 inside, and the slot 6 has a conductor groove 5 inside. The plug 2 is adapted to the conductor groove 5, and the sheath 4 is press-fitted to the slot 6. The tail end of the sheath 4 is connected to the slot 6 by a thread.

[0026] The precise fit between plug 2 and conductor groove 5 ensures that the multi-strand copper core conductor 8 is in close contact with the conductive contacts of external equipment, thus ensuring stable power transmission. The interference fit between the sheath 4 sections and the slot 6 forms the first layer of sealing and fixation to prevent the connection from loosening; the threaded connection forms the second layer of fixation to further enhance the connection strength, resist the pulling force, and prevent the power cord from being pulled off by the plug 2 and connector 3. The mating structure of the cylindrical plug 2 and the slot 6 reduces stress concentration at the connection, distributes external forces evenly, improves the tensile strength of the connection, and extends service life.

[0027] Detailed Workflow Step 1: Forming the main body of the power cord Prepare the anti-torsion center core 7 made of glass fiber reinforced nylon material, and determine the diameter according to the power cord specifications; Several strands of oxygen-free copper wire are twisted together to form a multi-strand copper core conductor 8, such as 7 strands of 0.5mm oxygen-free copper wire, which are spirally twisted around the anti-torsion center core 7. The twisting pitch is controlled at 10-20mm to ensure a balance between flexibility and tensile strength. An extrusion molding process is used to coat the conductor with an inner XLPE insulation layer 9, and then coat it with an outer TPU insulation layer 12 to form a composite insulation layer. A braided shielding layer 10 is formed by weaving tin-plated copper wires on the outside of the composite insulation layer, and finally, a gooseneck sheath 4 layers of polyurethane elastomer material are extruded to complete the forming of the connecting wire 1.

[0028] Step 2: Assemble plug 2 and connector 3 Peel off the gooseneck sheath 4 layers, braided shielding layer 10 and composite insulation layer at both ends of the connecting wire 1 in sequence to expose the multi-strand copper core conductor 8; Insert the conductor into the conductive terminal of the plug 2 and crimp it in place. Install the sheath 4 at the bottom of the plug 2 to ensure that the sheath 4 fits tightly against the connecting wire 1. Insert the conductor at the other end of the connecting wire 1 into the conductor groove 5 of the connector 3 and fix it in place to ensure good conductive contact; Insert plug 2 into slot 6 of connector 3, so that the sheath 4 fits the slot 6 with an interference fit. Rotate the thread at the end of the sheath 4 of plug 2 to lock it in place with slot 6, and complete the overall assembly.

[0029] Step 3: Usage and Protection Process In actual use, the four layers of the gooseneck sheath can be bent and shaped as needed to prevent the power cord from getting tangled; the anti-torsion center core 7 works together with the stranded conductor to resist tensile and torsional forces, reducing the risk of conductor breakage. The composite insulation layer prevents leakage, and the braided shielding layer 10 shields against electromagnetic interference, ensuring stable power transmission. After the four sections of the sheath of the plug 2 are inserted into the slot 6 of the connector 3 with an interference fit, the tail end of the four sections of the sheath is fixedly connected to the threaded section of the connector 3 to resist the pulling force and prevent the connection from falling off. During long-term use, the four layers of TPU outer layer and polyurethane sheath resist friction and compression, extending the service life of the power cord.

[0030] Step 4: Maintenance and Inspection Regularly check the connection status of plug 2 and connector 3. If the threads are loose, tighten them in time. Check the power cord for damage or cracks. If the gooseneck sheath or insulation layer is damaged, replace it in time to avoid the risk of leakage. Avoid excessive pulling or twisting of the power cord. When storing it, try to keep it in a naturally stretched state to further reduce tangling and damage.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-tangle, tensile-resistant power cord, characterized in that, The connector includes a connecting wire (1), which, from the inside out, includes an anti-torsion center core (7), a multi-strand copper core conductor (8), a composite insulation layer, a braided shielding layer (10), and a gooseneck sheath (4) layer. The multi-strand copper core conductor (8) is twisted around the anti-torsion center core (7), the composite insulation layer covers the outside of the multi-strand copper core conductor (8), the braided shielding layer (10) wraps around the composite insulation layer, and the gooseneck sheath (4) layer covers the outside of the braided shielding layer (10).

2. The anti-tangle and tensile-resistant power cord according to claim 1, characterized in that, The anti-torsion center core (7) is made of glass fiber reinforced nylon, and the multi-strand copper core conductor (8) is made of several strands of oxygen-free copper wire twisted together.

3. The anti-tangle and tensile-resistant power cord according to claim 1, characterized in that, The composite insulation layer includes an inner XLPE insulation layer (9) and an outer TPU insulation layer (12).

4. The anti-tangle and tensile-resistant power cord according to claim 1, characterized in that, The braided shielding layer (10) is made of tin-plated copper wire, and the gooseneck sheath (4) is made of polyurethane elastomer.

5. The anti-tangle and tensile-resistant power cord according to claim 4, characterized in that, One end of the connecting wire (1) is provided with a plug (2), and the other end of the connecting wire (1) is provided with a connector (3). The connector (3) is provided with a slot (6), and the slot (6) is provided with a conductor groove (5). The bottom end of the plug (2) is provided with a sheath (4). The plug (2) is adapted to the conductor groove (5), and the sheath (4) section of the plug (2) is press-fitted with the slot (6).

6. The anti-tangle and tensile-resistant power cord according to claim 5, characterized in that, The plug (2) has a cylindrical structure, and the tail end of the sheath (4) is connected to the slot (6) through a threaded structure.

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