Tensile spring connecting wire for portable charging gun of new energy automobile

Abstract

The utility model relates to the technical field of new energy automobile charging gun connecting lines, in particular to a tensile spring connecting line for a new energy automobile portable charging gun, which comprises a cable body, a sheath layer is arranged outside the cable body, a tensile layer is arranged in the sheath layer, an isolating layer is filled in the tensile layer, and a cable core is arranged in the cable body. A plurality of conductors are arranged in the isolating layer, and insulating layers are arranged outside the conductors. According to the improved connecting line, the insulating layer made of the ethylene propylene rubber material and made of the extrusion technology is arranged, and the isolating layer and the sheath layer made of the TPU material are matched, so that the cable is not prone to deformation, it is guaranteed that the cable can bear the severe external environment, and long-term use of the new energy automobile charging gun connecting line is facilitated; and meanwhile, a tensile layer is arranged to be matched with a spiral winding iron rod to bake and shape the cable into a spring structure, so that the cable has extremely high flexibility and can bear more tensile force and bending, and the use effect of the new energy automobile charging gun connecting wire is further improved.

Description

Technical Field

[0001] This utility model relates to the technical field of charging gun connection lines for new energy vehicles, specifically a tensile spring connection line for portable charging guns for new energy vehicles. Background Technology

[0002] In recent years, China's new energy vehicle industry has entered a stage of steady development. In order to better promote the healthy development of the new energy vehicle market, the country has repeatedly proposed to build a high-quality charging infrastructure system. As a key connection device between the vehicle and the charging pile in the charging process, the new energy charging gun cable plays an indispensable role in charging the battery pack and providing range power for the vehicle. With the development opportunities of the domestic new energy market, the market share of charging gun cables has continued to expand.

[0003] In this highly competitive market, charging gun cable manufacturers often resort to continuously lowering product prices to attract end customers and expand market share. However, this price war inevitably leads some suppliers to sacrifice product quality, using low-cost materials and manufacturing processes to produce charging gun cables. Even if some products meet production inspection requirements, their safety and reliability during actual charging cannot be guaranteed, and their lifespan is also shorter.

[0004] In the process of realizing this utility model, the following problems were found in the existing technology: 1. The filling material of the cable of the traditional structure is PP rope structure. The core wire is easily deformed by frequent bending during use. At the same time, most of the connecting wires are exposed outdoors. The outer sheath will leak oil and crack under extreme weather conditions, which is not conducive to the long-term use of the new energy vehicle charging gun connection cable; 2. The cable of the traditional structure often does not have a tensile strength structure. Frequent bending during use will cause the cable to crack, resulting in insufficient flexibility and poor appearance of the cable, which in turn affects the performance of the new energy vehicle charging gun connection cable. Utility Model Content

[0005] The purpose of this utility model is to provide a tensile spring connecting cable for portable charging guns of new energy vehicles, to solve the problems mentioned in the background art, such as the core wire being easily deformed by frequent bending during use, and the outer sheath cracking due to oil leakage under extreme weather conditions. Furthermore, traditional cables lack a tensile strength structure, and frequent bending during use causes cable cracking, thus affecting the performance of the charging gun connecting cable for new energy vehicles. To achieve the above objective, this utility model provides the following technical solution: a tensile spring connecting cable for portable charging guns of new energy vehicles, comprising a cable body, an outer sheath layer, an inner tensile layer, an inner insulating layer, a plurality of conductors, and an outer insulating layer.

[0006] More preferably, the cable body has extension areas at both ends and a crimping and shaping area at the center, with the crimping and shaping area threaded around the outside of the shaping iron rod.

[0007] More preferably, the sheath layer is made of TPU material, and the outer diameter of the sheath layer is between 15.2 and 16 mm, and the thickness of the sheath layer is between 0.8 and 1 mm.

[0008] More preferably, the tensile layer is made of tensile fiber, and the tensile layer is constructed by weaving filaments together, with the outer diameter of the filaments being 0.21 millimeters.

[0009] More preferably, the isolation layer is made of TPU material, and the outer diameter of the isolation layer is between 12.8 and 13.2 mm, and the thickness of the isolation layer is between 0.6 and 0.8 mm.

[0010] More preferably, the conductor is composed of annealed bare copper monofilaments twisted together, and the number of copper wires in the conductor is between seven and three hundred, and the diameter of the monofilaments is between 0.12 and 0.5 millimeters.

[0011] More preferably, the insulating layer is made of hard ethylene propylene rubber and is entirely wrapped around the outside of the conductor using an extrusion process.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this invention, an extrusion process combined with hard ethylene propylene rubber material as the insulation layer ensures excellent insulation performance of the wire core while improving the temperature resistance of the cable, making the cable less prone to deformation. At the same time, a TPU material isolation layer and sheath layer are set to ensure the stability of the internal wire core, increase the overall cable memory strength, and also withstand harsh external environments, ensuring the long-term use of the charging gun connection cable for new energy vehicles.

[0014] In this invention, a tensile layer is set inside the cable to ensure structural stability and increase the tensile strength of the cable. At the same time, the middle section of the cable is formed by winding an iron rod and baking it in an oven to create a spring structure, which gives the cable extremely high flexibility and the ability to withstand more tension and bending, thereby improving the performance of the charging gun connection cable for new energy vehicles. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the cable of this utility model;

[0016] Figure 2 This is a front view structural diagram of the cable of this utility model during its design process;

[0017] Figure 3 This is an enlarged cross-sectional view of the cable of this utility model;

[0018] Figure 4 This is a partial enlarged front view of the cross-section of the conductor of this utility model.

[0019] In the diagram: 1. Cable body; 101. Extension area; 102. Curling and shaping area; 103. Shaping iron rod; 2. Sheath layer; 3. Tensile layer; 4. Insulation layer; 5. Conductor; 6. Insulation layer. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 4 This utility model provides a technical solution: a tensile spring connecting wire for a portable charging gun for new energy vehicles, including a cable body 1, a sheath layer 2 on the outside of the cable body 1, a tensile layer 3 inside the sheath layer 2, an isolation layer 4 inside the tensile layer 3, a plurality of conductors 5 inside the isolation layer 4, and an insulation layer 6 outside the conductors 5.

[0022] In this embodiment, as Figure 1 and Figure 2 As shown, the cable body 1 has extension areas 101 at both ends and a curling and shaping area 102 at the center. The curling and shaping area 102 is threaded around the outside of the shaping iron rod 103. The center of the cable is shaped by winding the iron rod and baking it in an oven, so that the center section of the cable forms a spring structure. In actual use, the cable has extremely high flexibility, making it easy to stretch and bend, thus improving the performance of the cable.

[0023] In this embodiment, as Figure 3 As shown, the sheath layer 2 is made of TPU material, and the outer diameter of the sheath layer 2 is between 15.2 and 16 mm, and the thickness of the sheath layer 2 is between 0.8 and 1 mm. The sheath layer 2, which is made of TPU material through extrusion process, not only ensures the excellent mechanical properties of the cable, but also improves the cable's anti-friction performance, and can effectively withstand harsh external environments, avoiding the problem of cracking in winter, and facilitating the long-term use of the cable.

[0024] In this embodiment, as Figure 3As shown, the tensile layer 3 is made of tensile fiber, and the tensile layer 3 is constructed by weaving braided filaments together, with the outer diameter of the braided filaments being 0.21 mm. The tensile layer 3, constructed by weaving braided filaments, increases the tensile performance of the cable while ensuring structural stability, thereby improving the tensile performance of the cable in actual use and increasing the service life of the cable.

[0025] In this embodiment, as Figure 3 As shown, the insulating layer 4 is made of TPU material, and the outer diameter of the insulating layer 4 is between 12.8 and 13.2 mm, and the thickness of the insulating layer 4 is between 0.6 and 0.8 mm. The insulating layer 4 is filled into the gap of the wire core in the cable by extrusion. While ensuring the flexibility of the cable, it can effectively ensure the stability of the cable. In the long-term repeated bending and use, it can prevent the wire core from bulging and further improve the memory strength of the cable.

[0026] In this embodiment, as Figure 3 and Figure 4 As shown, conductor 5 is composed of annealed bare copper single wires twisted together, and the number of copper wires in conductor 5 is between seven and three hundred, with the diameter of each single wire between 0.12 and 0.5 mm. Conductor 5 is made of oxygen-free metallic copper material, generally bare copper, which can effectively ensure the resistivity of conductor 5. Combined with the twisted connection of multiple copper wires, it can effectively improve the overall performance of the cable and meet the charging needs of new energy vehicle charging guns.

[0027] In this embodiment, as Figure 3 As shown, the insulation layer 6 is made of hard ethylene propylene rubber and is entirely wrapped around the conductor 5 using an extrusion process. The hard ethylene propylene rubber used in the insulation layer 6 is a thermosetting material, which avoids the insulation deformation that occurs in thermoplastic materials under high temperature or high current conditions, ensuring the temperature resistance of the cable and improving the performance of the cable.

[0028] The usage method and advantages of this utility model: The anti-tensile spring connecting wire of this portable charging gun for new energy vehicles operates as follows:

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, during cable processing, the cable is first spirally wound around the outside of the shaping iron rod 103, with a certain length extension 101 at both ends for connection with the charging pile and charging gun. Then, the wound cable is placed in an oven and baked for a specific time. After the cable is shaped, it is removed, and the overall cable processing is completed. Next, the two ends of the cable are connected to the charging pile and charging gun respectively. When the cable is in use, it is stretched, and the spring structure in the middle section can effectively buffer the tension and bending. Finally, when not in use, the outer sheath layer 2 of the cable can effectively prevent the cable from cracking in extreme weather, increasing the service life of the cable.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tensile spring connecting wire for a portable charging gun for new energy vehicles, comprising a cable body (1), characterized in that: The cable body (1) is provided with a sheath layer (2) on the outside, a tensile layer (3) is provided inside the sheath layer (2), an isolation layer (4) is filled inside the tensile layer (3), a plurality of conductors (5) are provided inside the isolation layer (4), and an insulation layer (6) is provided outside the conductors (5).

2. The tensile spring connecting wire for a portable charging gun for new energy vehicles according to claim 1, characterized in that: The cable body (1) has extension areas (101) at both ends, and a curling and shaping area (102) is provided in the center of the cable body (1), and the curling and shaping area (102) is threaded around the outside of the shaping iron rod (103).

3. The tensile spring connecting wire for a portable charging gun for new energy vehicles according to claim 1, characterized in that: The sheath layer (2) is made of TPU material, and the outer diameter of the sheath layer (2) is between 15.2 and 16 mm, and the thickness of the sheath layer (2) is between 0.8 and 1 mm.

4. The tensile spring connecting wire for a portable charging gun for new energy vehicles according to claim 1, characterized in that: The tensile layer (3) is made of tensile fiber, and the tensile layer (3) is constructed by weaving filaments together, with the outer diameter of the filaments being 0.21 mm.

5. The tensile spring connecting wire for a portable charging gun for new energy vehicles according to claim 1, characterized in that: The isolation layer (4) is made of TPU material, and the outer diameter of the isolation layer (4) is between 12.8 and 13.2 mm, and the thickness of the isolation layer (4) is between 0.6 and 0.8 mm.

6. The tensile spring connecting wire for a portable charging gun for new energy vehicles according to claim 1, characterized in that: The conductor (5) is composed of annealed bare copper monofilaments twisted together, and the number of copper wires in the conductor (5) is between seven and three hundred, and the diameter of the monofilament is between 0.12 and 0.5 mm.

7. The tensile spring connecting wire for a portable charging gun for new energy vehicles according to claim 1, characterized in that: The insulating layer (6) is made of hard ethylene propylene rubber and is wrapped around the conductor (5) by an extrusion process.

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