Cold-resistant power line

Abstract

The utility model relates to a cold-resistant power line comprising a lead, a plug assembly installed at one end of the lead, and a clamping assembly installed at the other end of the lead. The wire comprises a conductive part, a skin tearing part, an insulating outer layer installed outside the conductive part and the skin tearing part, and an isolating layer arranged in the insulating outer layer and used for isolating the skin tearing part from the conductive part. The conductive member comprises a conductor, an insulating inner layer installed outside the conductive member, and a cold-resistant layer installed outside the insulating inner layer. The cold-resistant layer can effectively resist the damage of low temperature to the power line and ensure the flexibility and integrity of the power line in a low-temperature environment, so that the stability of power transmission is ensured; a common power line may be damaged after several low-temperature periods, and a cold-resistant power line can be subjected to multiple low-temperature tests, so that the cost and the workload caused by frequent replacement of the power line are reduced.

Description

Technical Field

[0001] This utility model relates to the field of power cord technology, and in particular to a cold-resistant power cord. Background Technology

[0002] In cold regions (such as polar regions and high-altitude mountainous areas) or cold-weather applications (such as outdoor low-temperature operations and cold storage), the performance of ordinary power cords deteriorates significantly at low temperatures due to the inherent limitations of their materials. Common plastics and rubber materials experience reduced molecular chain mobility at low temperatures, leading to hardening and brittleness. For example, common PVC insulation materials begin to lose elasticity below a certain temperature (around -15°C), and their physical properties deteriorate further at even lower temperatures, making them prone to cracking. Furthermore, the internal conductive metal, without proper protection, is also susceptible to damage due to its different shrinkage rate compared to the outer material during low-temperature contraction. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a cold-resistant power cord.

[0004] The present invention adopts the following technical solution:

[0005] A cold-resistant power cord includes a conductor, a plug assembly installed at one end of the conductor, and a snap-fit ​​assembly installed at the other end of the conductor; the conductor includes a conductive element, a sheathing element, an insulating outer layer installed outside the conductive element and the sheathing element, and an insulating layer disposed within the insulating outer layer to isolate the sheathing element and the conductive element; the conductive element includes a conductor, an insulating inner layer installed outside the conductive element, and a cold-resistant layer installed outside the insulating inner layer.

[0006] Furthermore, the conductive element also includes a shielding layer disposed between the insulating inner layer and the cold-resistant layer.

[0007] Furthermore, the conductive element also includes an armor layer disposed outside the cold-resistant layer.

[0008] Furthermore, there are two conductive elements, which are respectively disposed on both sides of the peeling element, and the isolation layer is disposed on both sides of the peeling element and isolates the conductive elements.

[0009] Furthermore, the conductor also includes a grounding element disposed within the outer insulating layer; the grounding element is disposed within the insulating layer on the side near the outer insulating layer.

[0010] Furthermore, the grounding element includes a grounding portion and a grounding insulation layer disposed outside the grounding portion.

[0011] Furthermore, the grounding component also includes an anti-corrosion layer disposed outside the grounding insulation layer and an identification layer disposed outside the anti-corrosion layer.

[0012] Furthermore, the conductor also includes a waterproof layer disposed outside the insulating outer layer.

[0013] Furthermore, the plug assembly includes a three-prong plug mounted on one end of the wire, and a first fold-resistant member mounted outside the wire and connected to the three-prong plug.

[0014] Furthermore, the snap-fit ​​assembly includes a snap-fit ​​member installed at one end of the conductor, and a second fold-resistant member installed outside the conductor and connected to the snap-fit ​​member; the snap-fit ​​member includes a limiting platform installed at one end of the conductor, and a snap-fit ​​member disposed on the side of the limiting platform away from the conductor.

[0015] The beneficial effects of this utility model are as follows:

[0016] The cold-resistant power cord involved in this utility model has a cold-resistant layer that can effectively resist the damage of low temperature to the power cord, ensuring the flexibility and integrity of the power cord in low temperature environment, thereby ensuring the stability of power transmission. Ordinary power cords may be damaged after a few low temperature cycles, while cold-resistant power cords can withstand multiple low temperature tests, reducing the cost and workload of frequent power cord replacements. Compared with ordinary power cords, it effectively extends the service life in low temperature environment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a cold-resistant power cord according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A cross-sectional view of the conductor of a cold-resistant power cord. Detailed Implementation

[0019] 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.

[0020] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Please see Figure 1 and Figure 2 The present invention provides a cold-resistant power cord comprising a conductor 10, a plug assembly 20 installed at one end of the conductor 10, and a snap-fit ​​assembly 30 installed at the other end of the conductor 10. The conductor 10 includes a conductive element 11, a sheathing element 12, an insulating outer layer 13 installed outside the conductive element 11 and the sheathing element, and an isolation layer 14 disposed within the insulating outer layer 13 to isolate the sheathing element 12 and the conductive element 11. The conductive element 11 includes a conductor 110, an insulating inner layer 111 installed outside the conductive element 11, and a cold-resistant layer 112 installed outside the insulating inner layer 111.

[0023] The working principle of this cold-resistant power cord is as follows: When the plug assembly 20 is inserted into the power socket and the locking assembly 30 is connected to the electrical equipment, current flows from the power socket through the plug assembly 20 into the conductive part 11 of the wire 10; the insulating inner layer 111 wraps around the conductor 110, and its function is to prevent current leakage; its insulation performance ensures that the current can only be transmitted along the conductor 110 and will not leak from the external environment or other parts; at the same time, it also plays a certain role in protecting the conductor 110, preventing the conductor 110 from being physically damaged or chemically corroded; the cold-resistant layer 112 is installed outside the insulating inner layer 111. In cold environments, ordinary materials may harden and become brittle, which may lead to damage to the power cord; while the cold-resistant layer... 112 has a low glass transition temperature; when the ambient temperature decreases, the cold-resistant material will not lose its elasticity as quickly as ordinary materials; for example, some cold-resistant rubber materials can still maintain a certain degree of flexibility at low temperatures, and can withstand the contraction and expansion caused by low temperatures, preventing the outer insulating layer 13 and the internal conductive parts 11 from cracking or being damaged due to stress caused by temperature changes; the peeling part 12 is a convenient design; when it is necessary to repair the power cord or connect other components, the outer insulating layer 13 can be easily peeled off by the peeling part 12; the isolation layer 14 separates the peeling part 12 from the conductive parts 11, ensuring that the peeling part 12 will not accidentally come into contact with the conductive parts 11 during normal use, avoiding safety hazards such as short circuits.

[0024] Compared to existing technologies, the cold-resistant power cord of this invention features a cold-resistant layer 112 that effectively resists damage from low temperatures, ensuring the cord's flexibility and integrity in low-temperature environments, thereby guaranteeing the stability of power transmission. Ordinary power cords may fail after a few low-temperature cycles, while the cold-resistant power cord can withstand multiple low-temperature tests, reducing the cost and workload associated with frequent power cord replacements. Compared to ordinary power cords, it effectively extends the service life in low-temperature environments. The insulating layer 14 ensures that after the outer insulation layer 13 is peeled off, the peeling element 12 will not accidentally contact the conductive element 11, thus avoiding safety hazards such as short circuits. This allows maintenance personnel to operate more safely and efficiently, reducing risks during maintenance. A stable connection also reduces contact resistance, minimizing heat generation due to poor contact. This not only prevents damage to the power cord and electrical equipment due to overheating but also improves energy efficiency, as low contact resistance reduces energy loss during transmission.

[0025] Please see Figure 1 and Figure 2The conductive component 11 also includes a shielding layer 113 disposed between the insulating inner layer 111 and the cold-resistant layer 112. The shielding layer 113 can effectively block external electromagnetic interference signals from entering the interior of the conductive component 11. For example, around medical equipment in a hospital, many complex electronic devices operate simultaneously, such as MRI machines and various monitoring instruments, which generate a large amount of electromagnetic radiation. When the cold-resistant power cord is used to power these medical devices, the shielding layer 113 can prevent external electromagnetic interference from entering the power cord, avoiding any impact on the signal transmission and accurate measurement of the medical devices, and ensuring the normal operation of the medical devices and the accuracy of diagnostic results.

[0026] The conductive component 11 also includes an armor layer 114 disposed outside the cold-resistant layer 112. When the power cord is subjected to accidental collision or impact, the armor layer 114 can effectively disperse the impact force; for example, in an outdoor environment, the power cord may be hit by falling branches, stones, etc., and the armor layer 114 can reduce the damage of these impacts to the internal structure, prevent the conductive component 11 from breaking or the inner insulation layer from being damaged, thereby reducing power failures and safety hazards caused by physical damage.

[0027] There are two conductive elements 11, each disposed on one side of the outer sheath. An insulating layer 14 is disposed on both sides of the outer sheath and isolates the conductive elements 11. Distributing the two conductive elements 11 on both sides of the outer sheath and isolating them through the insulating layer 14 effectively prevents accidental contact between the two conductive elements 11. During normal use, movement, or when subjected to a certain degree of external force, this arrangement ensures that current is transmitted independently through the two conductive elements 11 along a predetermined path. For example, when the power cord is bent in a confined space or squeezed by other objects, the insulating layer 14 prevents the two conductive elements 11 from touching each other and causing a short circuit, thereby reducing the risk of fire or equipment damage due to short circuits. This structure makes the insulation effect more reliable. The insulating layer 14, together with the outer insulating layer 13, provides double insulation protection for the conductive elements 11. Even if the outer insulating layer 13 is partially damaged in extreme situations (such as being punctured by a sharp object), the insulating layer 14 can still prevent a short circuit between the two conductive elements 11, ensuring the safe use of the power cord.

[0028] The conductor 10 also includes a grounding element 15 disposed within the outer insulating layer 13; the grounding element 15 is disposed within the insulating layer 14 on the side near the outer sheath 12. In the event of a power line fault, such as damage to the inner insulating layer causing leakage of the conductive element 11, the grounding element 15 can provide a safe path for the leakage current, directing the current to the ground. Because the grounding component 15 is located within the insulation layer 14 near the side of the sheathing component 12, if a user accidentally comes into contact with a leaking part while operating the sheathing component 12 for maintenance or other operations, the grounding component 15 can quickly conduct the current away, preventing electric shock and effectively reducing the probability of electric shock. Placing the grounding component 15 within the insulation outer layer 13 near the sheathing component 12 makes grounding connections more convenient. When a user peels off the insulation outer layer 13 to use the sheathing component 12 for maintenance or to connect other lines, the grounding component 15 can be easily located and connected to the grounding system. For example, during the installation of electrical equipment, electricians can directly connect the grounding component 15 to the grounding busbar or grounding terminal after peeling off the power cord sheath, without needing to find an additional grounding path, thus improving the efficiency of grounding operations.

[0029] The grounding component 15 includes a grounding portion 150 and a grounding insulation layer 151 disposed outside the grounding portion 150. The grounding insulation layer 151 serves as a physical protective barrier for the grounding portion 150. During the daily use of the power cord, the grounding portion 150 may be affected by various physical factors, such as compression, friction, and bending; the grounding insulation layer 151 can withstand these external forces, preventing the grounding portion 150 from being damaged. For example, in industrial production environments, the power cord may be squeezed by machinery or dragged on the ground; the grounding insulation layer 151 can ensure that the grounding portion 150 is not damaged and maintain its grounding function. In some special environments, such as chemical workshops and coastal facilities, the power cord may come into contact with various corrosive chemicals; the grounding insulation layer 151 can prevent these chemicals from contacting the grounding portion 150, avoiding corrosion of the grounding portion 150. For example, in electrical equipment near the sea, the salt in the sea breeze is highly corrosive; the grounding insulation layer 151 can effectively protect the grounding portion 150 and extend the service life of the grounding component 15.

[0030] The grounding component 15 also includes an anti-corrosion layer 152 disposed outside the grounding insulation layer 151 and an identification layer 153 disposed outside the anti-corrosion layer 152. The anti-corrosion layer 152 provides an additional protective barrier for the grounding component 15, preventing corrosive substances from contacting the grounding insulation layer 151 and the grounding part 150, greatly extending the service life of the grounding component 15. Even in relatively mild environments, long-term use and environmental factors may lead to slow corrosion of metal components, and the anti-corrosion layer 152 can effectively slow down this process. The identification layer 153 can clearly display relevant information about the grounding component 15, such as grounding symbol, model, specifications, manufacturer, etc. During the installation, maintenance, and repair of electrical equipment, personnel can quickly and accurately identify the grounding component 15 through the identification layer 153 to ensure the correct connection and operation of the grounding system. For example, in the complex wiring of large electrical equipment, the identification layer 153 can be used to easily locate the grounding component 15, avoiding misoperation.

[0031] The conductor 10 also includes a waterproof layer 16 disposed outside the outer insulating layer 13. The waterproof layer 16 completely covers the surface of the outer insulating layer 13 and is tightly adhered to the outer insulating layer 13 during the manufacturing process of the power cord, providing comprehensive waterproof protection in both straight and curved sections.

[0032] The plug assembly 20 includes a three-prong plug 21 installed at one end of the wire 10, and a first flexural member 22 installed outside the wire 10 and connected to the three-prong plug 21. In daily use, the wire 10 near the plug is often subjected to bending forces; the first flexural member 22 can effectively enhance the bending resistance of the wire 10 at the plug connection; it can reduce the possibility of breakage of the internal conductive part 11 or damage to the inner insulation layer of the wire 10 due to repeated bending; for example, in a home or office environment, when people plug and unplug the plug or move electrical appliances, the wire 10 is easily bent near the plug, and the first flexural member 22 acts like a protective sleeve, greatly extending the service life of the power cord in this critical part.

[0033] The snap-fit ​​assembly 30 includes a snap-fit ​​member 31 installed at one end of the conductor 10, and a second fold-resistant member 32 installed outside the conductor 10 and connected to the snap-fit ​​member 311; the snap-fit ​​member 31 includes a limiting platform 310 installed at one end of the conductor 10, and a snap-fit ​​member 311 disposed on the side of the limiting platform 310 away from the conductor 10. The limiting platform 310 is installed at one end of the conductor 10, providing a stable foundation for the connection between the snap-fit ​​assembly 30 and the electrical equipment. When the snap-fit ​​assembly 30 is inserted into the interface of the electrical equipment, the limiting platform 310 ensures that the insertion depth is appropriate, preventing damage to the internal circuitry from excessive insertion or poor contact from insufficient insertion. The snap-fit ​​component 311 is located on the side of the limiting platform 310 away from the conductor 10, and its main function is to mechanically connect with the interface of the electrical equipment, ensuring a firm connection between the power cord and the equipment. Different electrical equipment interfaces have different shapes and snap-fit ​​methods, and the snap-fit ​​component 311 can be adapted according to the design of the equipment interface. Similar to the first fold-resistant component 22 at the plug assembly 20, the second fold-resistant component 32 is installed outside the conductor 10 and connected to the snap-fit ​​component 311. Its main function is to enhance the fold resistance of the conductor 10 near the snap-fit ​​assembly 30. In daily use, when the user plugs or unplugs the snap-fit ​​assembly 30 or moves the equipment, the conductor 10 is easily bent near the snap-fit ​​assembly 30.

[0034] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A cold-resistant power cord, characterized by, The wire includes a conductive part, a peeling part, an insulating outer layer installed outside the conductive part and the peeling part, and an isolation layer arranged in the insulating outer layer for isolating the peeling part and the conductive part.

2. The cold-resistant power cord of claim 1, wherein, The conductive part further includes a shielding layer arranged between the insulating inner layer and the cold-resistant layer.

3. The cold-resistant power cord of claim 1, wherein, The conductive part further includes an armored layer arranged outside the cold-resistant layer.

4. The cold-resistant power cord of claim 1, wherein, The conductive part is two, and the two conductive parts are arranged on both sides of the peeling part, and the isolation layer is arranged on both sides of the peeling part and isolates the conductive parts.

5. The cold-resistant power cord of claim 4, wherein, The wire further includes a grounding part arranged in the isolation layer close to one side of the peeling part.

6. The cold-resistant power cord of claim 5, wherein, The grounding part includes a grounding portion and a grounding insulating layer arranged outside the grounding portion.

7. The cold-resistant power cord of claim 6, wherein, The grounding part further includes a corrosion-resistant layer arranged outside the grounding insulating layer and a marking layer arranged outside the corrosion-resistant layer.

8. The cold-resistant power cord of claim 1, wherein, The wire further includes a waterproof layer arranged outside the insulating outer layer.

9. The cold-resistant power cord of claim 1, wherein, The plug assembly includes a triangular plug installed at one end of the wire and a first fold-resistant part installed outside the wire and connected with the triangular plug.

10. The cold-resistant power cord of claim 1, wherein, The clamping assembly includes a clamping part installed at one end of the wire and a second fold-resistant part installed outside the wire and connected with the clamping part; the clamping part includes a limiting platform installed at one end of the wire and a clamping part arranged on the side of the limiting platform away from the wire.

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