Fireproof double-core power line
By using a modified polyvinyl chloride insulation layer and a movable shell design, the problems of power cord bending damage and inconvenient storage are solved, achieving both safety and convenient storage of the power cord.
Patent Information
- Application Number
- CN202522521546.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-27
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-27
AI Technical Summary
Existing dual-core power cords are prone to damage when bent, and lack a convenient storage structure, affecting both safety and ease of storage.
The insulation layer is made of modified polyvinyl chloride and low-smoke halogen-free high flame-retardant material. Combined with the design of movable shell and support plate, the power cord can be fixed and stored by the cooperation of extrusion shell and magnet.
It effectively reduces excessive bending of the power cord, improves safety and storage convenience, and enhances the applicability of the power cord.
Smart Images
Figure CN224947098U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of dual-core power cords, specifically a fire-resistant dual-core power cord. Background Technology
[0002] A two-core power cord, as the name suggests, is a power cord containing two conductors. This design and application offer unique value and advantages in multiple fields. A two-core power cord consists of two independent conductors, each independent of the other, with no direct connection between them. This design allows for more flexible and diverse applications when transmitting electrical energy.
[0003] Many existing dual-core power cords utilize flame-retardant PVC and flame-retardant rubber to enhance their fire resistance. They also incorporate high-temperature resistant materials such as mica and ceramicized silicone rubber to further improve fire resistance, effectively increasing safety and lifespan during use. A dual-core power cord consists of two conductors for transmitting low-voltage current. Insulation material separates and protects the two conductors, and some insulation materials are halogen-free, offering environmental friendliness and safety. The outer layer of the cord is typically made of polyvinyl chloride (PVC), a thermoplastic with excellent insulation, chemical resistance, and mechanical strength, making it widely used in wire and cable manufacturing.
[0004] Some existing power cords, due to their inherent flexibility, will bend depending on the environment during use. If the bending angle is too large, it will damage the wire core and other materials inside the power cord, which will not only affect the normal use of the power cord, but also affect the safety of the power cord during use. Meanwhile, existing power cords do not have their own storage structure when not in use. They need to be combined with other structures to store them, which is not only cumbersome and inconvenient, but also prone to excessive compression of the power cord during storage. Utility Model Content
[0005] The purpose of this invention is to provide a fire-resistant dual-core power cord to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a fire-resistant dual-core power cord, comprising a dual-core power cord body and an insulation layer disposed on its surface. The sheath of the power cord is made of modified polyvinyl chloride (PVC), a thermoplastic with good insulation properties, oil resistance, weather resistance, chemical corrosion resistance, and mechanical strength, and is therefore widely used in the manufacture of wires and cables. The core insulation layer uses low-smoke halogen-free high flame-retardant materials or low-smoke halogen-free irradiated cross-linked materials to improve the fire resistance and high-temperature resistance of the power cord, effectively enhancing the safety and service life of the power cord during use.
[0007] Also includes: A movable shell is fixed to both sides of a support plate. An extrusion shell is movably connected to the inner cavity of the movable shell. A fixing block is fixedly connected to one side of the extrusion shell. An extrusion block is slidably connected to the surface of the fixing block. A fixing groove is provided on one side of the inner cavity of the movable shell. A connecting groove is formed in the inner cavity of the fixed groove. A pusher is slidably connected to the inner cavity of the connecting groove. A compression spring is fixedly connected to one side of the pusher. Placement grooves are formed at the top and bottom of the movable shell. Magnets are fixedly connected to the inner wall of the placement groove.
[0008] Preferably, a positioning rod is fixedly connected to the surface of the extrusion shell, and a positioning groove is provided in the inner cavity of the movable shell, with the inner wall of the positioning groove slidably connected to the surface of the positioning rod.
[0009] Preferably, a locking rod is fixedly connected to the inner cavity of the connecting groove, and the other end of the locking rod extends through to the other side of the push frame and is slidably connected to the inner wall of the through-hole.
[0010] Preferably, one side of the push frame is fixedly connected with an anti-slip ridge, and the number of the anti-slip ridges is several.
[0011] Preferably, both the fixing block and the extrusion block have an inclined structure on one side, and the fixing block and the extrusion block are used together.
[0012] Preferably, one side of the extrusion shell has an arc-shaped structure design, and the extrusion shell is made of rubber.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention, through the cooperation of the movable shell and the support plate, and the cooperation of the fixing block and the pressing block, facilitates the fixation of the movable shell and the dual-core power cord body by pressing the shell. It can support the dual-core power cord body even when it is bent, thereby reducing excessive bending. Simultaneously, with the cooperation of the magnet, the dual-core power cord body is not only easier to store, but also less likely to be excessively compressed. This effectively improves the applicability of the power cord and solves the problems of excessive bending and inconvenient storage of existing power cords. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial three-dimensional cross-sectional structural diagram of the present invention; Figure 3 This is a partial three-dimensional structural diagram of the present invention; Figure 4 This is a partial three-dimensional cross-sectional structural diagram of the present invention; Figure 5 This is a partial three-dimensional cross-sectional structural diagram of the present invention.
[0015] In the diagram: 1. Dual-core power cord body; 2. Support plate; 3. Movable shell; 4. Extrusion shell; 5. Fixing block; 6. Extrusion block; 7. Fixing groove; 8. Connecting groove; 9. Push frame; 10. Extrusion spring; 11. Placement groove; 12. Magnet; 13. Positioning groove; 14. Positioning rod; 15. Locking rod; 16. Anti-slip ridge. 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 Figures 1-5As shown, a fire-resistant dual-core power cord includes a dual-core power cord body 1. The dual-core power cord body 1 can transmit power through its two internal cores, thus facilitating the supply of power to other devices. Due to its material composition, it can improve the safety of the power cord while effectively reducing its impact on the surrounding environment, exhibiting strong environmental performance. A support plate 2 is provided on the surface of the dual-core power cord body 1. One side of the support plate 2 is movably connected to the surface of the dual-core power cord body 1. The support plate 2 is designed with elastic metal, allowing it to bend along with the dual-core power cord body 1 when bent, and also allowing it to return to its original shape after bending. The shape of the support plate 2 facilitates its repeated use. Movable shells 3 are fixedly connected to both sides of the support plate 2. The inner wall of the movable shell 3 is slidably connected to the surface of the dual-core power cord body 1, allowing the movable shell 3 to move easily on the surface of the dual-core power cord body 1. A compression shell 4 is movably connected to the inner cavity of the movable shell 3. One side of the compression shell 4 has an arc-shaped design, which increases the contact area between the dual-core power cord body 1 and the compression shell 4. The compression shell 4 is made of rubber, which increases the friction between the compression shell 4 and the dual-core power cord body 1 when the compression shell 4 compresses it, thereby improving the fixing effect of the compression shell 4 on the dual-core power cord body 1. A fixing block 5 is fixedly connected to one side, and a pressing block 6 is slidably connected to the surface of the fixing block 5. A fixing groove 7 is opened on one side of the inner cavity of the movable shell 3. The inner wall of the fixing groove 7 is slidably connected to the surface of the pressing block 6. Under this action, the pressing block 6 can be limited, so that the pressing block 6 can be more stable when moving, and avoid the connection effect between the pressing block 6 and the fixing block 5 due to instability during movement. Both the fixing block 5 and the pressing block 6 have an inclined structure design on one side. The fixing block 5 and the pressing block 6 are used together. Under this action, the pressing block 6 can move the fixing block 5 under the shape matching, so that the fixing block 5 can drive the pressing shell 4 to press the surface of the dual-core power cord body 1, so that the support plate 2 can be bent. The extrusion block 6 will not easily return to its original state. The inner cavity of the fixing groove 7 is provided with a connecting groove 8, and a pusher 9 is slidably connected to the inner cavity of the connecting groove 8. One side of the pusher 9 is fixedly connected to the surface of the extrusion block 6. Under this action, the extrusion block 6 can be easily moved by the operator with the cooperation of the pusher 9. Furthermore, the shape of the pusher 9 also facilitates the limiting of the extrusion block 6, thus preventing the extrusion block 6 from easily detaching from the inside of the fixing groove 7. A compression spring 10 is fixedly connected to one side of the pusher 9, and the other end of the compression spring 10 is fixedly connected to the inner wall of the connecting groove 8. Under this action, the extrusion block 6 can be compressed by the pusher 9 through the cooperation of the compression spring 10, thereby preventing the extrusion block 6 from moving arbitrarily and affecting the limiting effect on the fixing block 5.A number of anti-slip ribs 16 are fixedly connected to one side of the push frame 9. These ribs increase friction when the operator pushes the push frame 9, making it easier to move. A locking rod 15 is fixedly connected to the inner cavity of the connecting groove 8. The other end of the locking rod 15 extends through to the other side of the push frame 9 and slides along the inner wall of its penetration point. The locking rod 15 limits the compression of the compression spring 10 during compression or rebound, preventing significant positional shifts that could affect the limiting effect on the compression block 6. A positioning rod 14 is fixedly connected to the surface of the compression shell 4. A positioning groove 13 is provided in the inner cavity of the movable shell 3. The inner wall of the positioning groove 13 is connected to the positioning rod 14. The surface sliding connection of the 4 allows for guidance of the extrusion shell 4 during movement through the cooperation of the positioning groove 13 and the positioning rod 14. This ensures greater stability of the extrusion shell 4 during movement and also limits its movement, preventing it from easily detaching from the interior of the movable shell 3. The top and bottom of the movable shell 3 are each provided with a placement groove 11. Magnets 12 are fixedly connected to the inner wall of the placement groove 11, with the upper and lower magnets working together. This allows for easy storage of the dual-core power cord body 1 through the cooperation of the magnets 12 on the surface of the other movable shell 3, making storage more convenient and preventing the dual-core power cord body 1 from scattering. This effectively improves the applicability of the power cord.
[0018] It is worth noting that the technical features such as the dual-core power cord body 1 and the support plate 2 proposed in this technical solution should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be selected using conventional methods in this field. This technical solution will not elaborate further.
[0019] Working principle: First, when the power cord needs to be bent, the support plate 2 is moved to a suitable position through the cooperation of the movable shell 3. Then, the operator pushes the pusher 9 to drive the extrusion block 6 to extrude the fixed block 5. With the cooperation of the fixed block 5, the positioning groove 13, and the positioning rod 14, the extrusion shell 4 will press against the surface of the dual-core power cord body 1. The material of the extrusion shell 4 and the dual-core power cord body 1 limit the movable shell 3. Then, the operator bends the dual-core power cord body 1. During the bending process, the support plate 2 also bends simultaneously, so that the support plate 2 is located in the inner circle of the bend, thereby supporting the dual-core power cord body 1. Then, the operator uses the same method to fix the other movable shell 3. This is not only convenient, but also reduces the possibility of excessive bending of the dual-core power cord body 1. When it is necessary to mechanically store the dual-core power cord body 1, the operator brings the two movable shells 3 close to each other. With the cooperation of the magnet 12, they will attract each other, thereby storing the dual-core power cord body 1.
[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0021] 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. A fire-resistant dual-core power cord, comprising a dual-core power cord body (1) and a support plate (2) disposed on its surface, characterized in that, Also includes: Movable shells (3) are fixed on both sides of the support plate (2). An extrusion shell (4) is movably connected to the inner cavity of the movable shell (3). A fixing block (5) is fixedly connected to one side of the extrusion shell (4). An extrusion block (6) is slidably connected to the surface of the fixing block (5). A fixing groove (7) is opened on one side of the inner cavity of the movable shell (3). A connecting groove (8) is opened in the inner cavity of the fixed groove (7). A pusher (9) is slidably connected to the inner cavity of the connecting groove (8). A compression spring (10) is fixedly connected to one side of the pusher (9). Placement grooves (11) are opened at the top and bottom of the movable shell (3). A magnet (12) is fixedly connected to the inner wall of the placement groove (11).
2. The fire-resistant dual-core power cord according to claim 1, characterized in that: The surface of the extrusion shell (4) is fixedly connected to a positioning rod (14), and the inner cavity of the movable shell (3) is provided with a positioning groove (13), and the inner wall of the positioning groove (13) is slidably connected to the surface of the positioning rod (14).
3. The fire-resistant dual-core power cord according to claim 1, characterized in that: The inner cavity of the connecting groove (8) is fixedly connected to a locking rod (15), and the other end of the locking rod (15) passes through to the other side of the push frame (9) and is slidably connected to the inner wall of the through point.
4. A fire-resistant dual-core power cord according to claim 1, characterized in that: One side of the push frame (9) is fixedly connected with anti-slip ribs (16), and the number of anti-slip ribs (16) is several.
5. A fire-resistant dual-core power cord according to claim 1, characterized in that: Both the fixing block (5) and the extrusion block (6) have an inclined structure design on one side, and the fixing block (5) and the extrusion block (6) are used together.
6. A fire-resistant dual-core power cord according to claim 1, characterized in that: The extrusion shell (4) has an arc-shaped structure on one side and is made of rubber.