Protective wire cable

Abstract

The utility model belongs to the technical field of cable manufacturing, and particularly relates to a protective wire cable. The cable comprises a plurality of electric conductors, a filling layer wrapping the electric conductors, an inner sheath wrapping the filling layer, an outer sheath wrapping the inner sheath, and an armored structure arranged between the inner sheath and the outer sheath. Wherein a flame-retardant layer is arranged outside the electric conductor; and an anti-impact cavity structure is arranged between two adjacent electric conductors in the circumferential direction. According to the cable, the flame-retardant layer is added, so that the cable can be effectively prevented from being burnt in a high-temperature environment, and large-area damage of the cable caused by internal combustion can be avoided, and the electricity utilization safety is guaranteed.

Description

Technical Field

[0001] The present application belongs to the technical field of cable manufacturing, and in particular, relates to a protective wire and cable. Background Art

[0002] In modern society, cables, as an important medium for power transmission, are widely used in power transmission and other fields. Especially with the popularization of new energy vehicles, the demand for cables is also increasing due to the increasing number of vehicles that need to be charged. Cables are often affected by the external environment during the use of laying, such as impact, extrusion, etc. These factors may cause damage to the cables and affect their normal operation. In order to ensure that the cables are not damaged by impact during transportation, installation and operation, and to ensure their stable operation in harsh environments, it is an urgent problem to be solved in the design and manufacture of cables. Utility Model Content

[0003] One advantage of the present application is that it provides a protective wire and cable with an added flame retardant layer, which can effectively prevent internal combustion from causing large-scale damage to the cable in a high-temperature cable environment, thereby ensuring the safety of electricity use.

[0004] Another advantage of the present application is that it provides a protective wire and cable designed with a cavity structure, which ensures that the cable deforms when impacted and reduces damage to the conductor. At the same time, the cavity structure reduces the weight of the wire and cable, facilitating the transportation of top-line cables.

[0005] Another advantage of the present application is that it provides a protective wire and cable, and the cavity structure design facilitates the bending of the wire and cable, thereby facilitating winding and transportation.

[0006] In order to achieve at least one of the above advantages or other advantages and purposes, according to one aspect of the present application, a protective wire and cable is provided, which includes multiple conductors, a filling layer wrapped around the outside of the conductors, an inner sheath wrapped around the filling layer, an outer sheath wrapped around the inner sheath, and an armor structure arranged between the inner sheath and the outer sheath; wherein a flame retardant layer is arranged outside the conductors; and an impact-resistant cavity structure is arranged between two adjacent conductors in the circumferential direction.

[0007] In the protective wire and cable described in the present application, the flame retardant layer is made of polyurethane foam or asbestos.

[0008] In the protective electric wire and cable described in the present application, the cross-sectional shape of the cavity structure is a triangle.

[0009] In the protective electric wire and cable described in the present application, the middle area of ​​the filling layer is filled with a plurality of nylon ropes.

[0010] In the protective wire and cable described in the present application, the armor structure includes at least an armor layer, wherein the armor layer has a first bend and a second bend in the opposite direction of the first bend, and the first bend and the second bend are arranged at equal intervals.

[0011] In the protective electric wire and cable according to the present application, an inner sheath protrusion filled in the second curved portion is provided on the outer wall of the inner sheath.

[0012] In the protective electric wire and cable according to the present application, an outer sheath convex portion filled in the first curved portion is provided on the inner wall of the outer sheath.

[0013] In the protective electric wire and cable described in the present application, there are multiple armor layers along the length direction of the electric wire and cable, and there is a complete spacing between the armor layers.

[0014] In the protective wire and cable according to the present application, in the width direction of the wire and cable, the armor layer includes a first armor member and a second armor member connected to the first armor member, and there is a gap between the first armor member and the second armor member.

[0015] Further objectives and advantages of the present application will be fully reflected through understanding of the following description and drawings.

[0016] These and other objects, features and advantages of the present application are fully reflected in the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the protective wire and cable of this application.

[0018] Figure 2 for Figure 1 Front view of medium protection type wire and cable.

[0019] Figure 3 for Figure 2 AA cross-sectional view of medium-protected wire and cable.

[0020] Figure 4 for Figure 1 Exploded view of medium protection type wire and cable. DETAILED DESCRIPTION

[0021] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the applicant to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustration purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0022] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0023] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the present application. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0024] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to include plural forms, unless the context clearly indicates an exception. It will also be understood that the terms "comprising" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements, or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

[0025] Reference Manual Attached Figure 1 To Attachment Figure 4 , a protective wire and cable according to one embodiment of the present application is illustrated; wherein, the protective wire and cable comprises a plurality of conductors 10, a filling layer 20, an inner sheath 40, an armor structure and an outer sheath 70, the conductors 10 are copper conductors, and the conductors 10 are the power transmission core of the entire cable, and the electric charge is transmitted from one end to the electrical equipment through the conductors 10 for use; the number of conductors 10 described in the present application is four, of course, in other embodiments, the number of conductors 10 can be adjusted according to demand, for example, the number of conductors 10 is three or five, and the specific number is not specifically limited in the present application.

[0026] An insulating layer 11 is sheathed around each electric conductor 10. The insulating layer 11 is made of polyvinyl chloride or cross-linked polyvinyl chloride. The insulating layer 11 protects the outflow of electric charges from the cable and reduces the electric loss during power transmission. An additional layer of polyethylene is sheathed outside the insulating layer 11 to form a first layer of protective layer 12 for the electric conductor 10, which protects the electric conductor 10 from being damaged. A ground wire protective layer 13 made of copper metal is sheathed outside the protective layer 12. The ground wire protective layer 13 is used to protect the cable and is used as the ground wire of the cable. A flame retardant layer 14 is sheathed outside the ground wire protective layer 13. The flame retardant layer 14 is made of polyurethane foam or asbestos.

[0027] The ground wire protection layer 12, the ground wire protection layer 13, the flame retardant layer 14 and the protected conductor 10 are all surrounded by a filling layer 20, and the filling layer 20 is glass fiber. A plurality of nylon ropes 21 are filled in the central area of ​​the filling layer 20, and the design of the nylon ropes 21 can enhance the overall toughness of the cable and facilitate the bending of the cable. A plurality of cavity structures 22 are provided on the filling layer 20, wherein the cavity structure 22 is located between the two conductors 10 in the circumferential direction, and the cavity structure 22 reduces the cost of the entire wire and cable, reduces the weight and facilitates the winding of the wire and cable.

[0028] Specifically, in order to cope with complex working environments, the protective cable of the present application is designed with an armor structure compared to traditional cables. Specifically, the armor structure includes an armor layer 50 on one side of the conductor 10. Figure 3 As shown, the cross-sectional view formed after the armor layer 50 is cut along the length direction of the cable is wavy, that is, the thickness of the armor layer 50 in each cross section along the length direction of the cable is the same. The armor layer 50 is partially concave to form a first bend 51, and the side adjacent to the first bend 51 is arched in the direction of the electric conductor 10 of the cable to form a second bend 52; the first bend 51 and the second bend 52 in the armor layer 50 are arranged equidistantly along the length direction of the cable. There are multiple armor layers along the length direction of the wire and cable, and there is a complete spacing between the armor layers. In the width direction of the wire and cable, the armor layer includes a first armor member and a second armor member connected to the first armor member, and there is a spacing between the first armor member and the second armor member.

[0029] In addition, the inner sheath 40 is used to protect the cable to prevent the armor layer 50 from causing damage to the inside of the cable. The inner sheath 40 is made of cross-linked polyvinyl chloride. The outer wall of the inner sheath 40 is convex at the position corresponding to each second bend 52 to form an inner sheath convex portion 41. The outer sheath 70 is sleeved on the outside of the armor layer 50. The outer sheath 70 is also made of cross-linked polyvinyl chloride. The inner wall of the outer sheath 70 is convex corresponding to each first bend 51 to form an outer sheath convex portion 71. The inner sheath convex portion 41 is staggered with the outer sheath convex portion 71. The inner sheath convex portion 41 and the outer sheath convex portion 71 act on each other elastically to offset the impact force and protect the cable from damage. At the same time, this structural method also improves the scratch resistance and wear resistance of the cable, further improves the strength of the cable, and enhances the working range of the cable.

[0030] The protective wire and cable of the present application can effectively improve the impact resistance of the cable through unique structural design and material selection, ensure its stable operation in harsh environments, meet the market demand for high-performance cables, and have a wider range of application scenarios. In addition, the protective wire and cable of the present application, while improving the impact resistance, does not sacrifice other properties of the cable, such as flexibility and bendability, and has a higher use value.

[0031] It should be noted that in the apparatus and method of the present application, the components or steps in different embodiments can be decomposed and / or recombined without departing from the principles of the present application. Such decomposition and / or recombination should be considered to be included in the application concept of the present application.

[0032] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

Claims

1. A protective wire and cable, comprising a plurality of conductors, a filling layer wrapped around the conductors, an inner sheath wrapped around the filling layer, an outer sheath wrapped around the inner sheath, and an armor structure arranged between the inner sheath and the outer sheath; wherein a flame retardant layer is arranged outside the conductors; and an impact-resistant cavity structure is arranged between two adjacent conductors in the circumferential direction.

2. A protective wire and cable according to claim 1, wherein: The flame retardant layer is made of polyurethane foam or asbestos.

3. A protective wire and cable according to claim 1, wherein: The cross-sectional shape of the cavity structure is a triangle.

4. A protective wire and cable according to claim 1, wherein: The middle area of ​​the filling layer is filled with a plurality of nylon ropes.

5. A protective wire and cable according to claim 1, wherein: The armor structure at least comprises an armor layer, wherein the armor layer has a first curved portion and a second curved portion with a curved direction opposite to that of the first curved portion, and the first curved portion and the second curved portion are arranged at equal intervals.

6. A protective wire and cable according to claim 5, wherein: An inner sheath convex portion filled in the second curved portion is provided on the outer wall of the inner sheath.

7. A protective wire and cable according to claim 6, wherein: An outer sheath convex portion filled in the first curved portion is provided on the inner wall of the outer sheath.

8. A protective wire and cable according to claim 6, wherein: There are multiple armor layers along the length direction of the electric wire and cable, and there is a complete spacing between the armor layers that is sufficient for the power supply line and cable.

9. A protective wire and cable according to claim 6, wherein: In the width direction of the wire and cable, the armor layer includes a first armor member and a second armor member connected to the first armor member, and there is a gap between the first armor member and the second armor member.

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