A bend-resistant, flame-retardant cable

Abstract

The utility model discloses a kind of flame-retardant cables of bending resistance, belong to cable technical field.The utility model includes including bending-resistant sleeve and cable body, the outside of cable body is equipped with reinforcing rib, the outside of reinforcing rib is equipped with elastic sleeve, the outside of elastic sleeve is equipped with bending-resistant sleeve, the outside of bending-resistant sleeve is evenly provided with bending groove, bending groove is V-shaped groove structure, cable body includes conductor, conductor is equipped with four, the outside of four conductors is separately equipped with insulating layer, the outside of four insulating layers is equipped with filling layer, the outside of filling layer is equipped with flame-retardant layer, the outside of flame-retardant layer is equipped with shielding layer.The utility model is through the equidistance V-shaped bending groove outside bending-resistant sleeve and can direct dispersion bending stress, avoid the sheath cracking caused by local stress concentration, while maintaining cable overall flexibility, while the elastic sleeve of spring structure evenly covers cable body, provide elastic deformation space when bending, reduce the mechanical damage risk of internal conductor and insulating layer.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a bend-resistant flame-retardant cable. Background Technology

[0002] Cables are wire products used to transmit electrical energy, information, and realize the conversion of electromagnetic energy, and are widely used in power systems, information transmission systems, and other fields. In practical use, cables often need to be bent during laying or subjected to bending forces, which places high demands on their bending resistance. At the same time, for safety reasons, especially in construction and industrial settings, the flame-retardant properties of cables are also crucial.

[0003] While existing cables possess certain flame-retardant properties, their bending resistance is poor, and they are prone to cracking and damage after repeated bending, affecting their service life. Therefore, a bending-resistant flame-retardant cable is proposed to overcome these problems. Utility Model Content

[0004] The purpose of this invention is to provide a bend-resistant flame-retardant cable. The equidistant V-shaped bending grooves on the outside of the bend-resistant sleeve can directionally disperse bending stress, avoiding sheath cracking caused by local stress concentration, while maintaining the overall flexibility of the cable. At the same time, the elastic sleeve of the spring structure evenly covers the cable body, providing elastic deformation space during bending, reducing the risk of mechanical damage to the internal conductor and insulation layer. This solves the problem of poor bend resistance, which easily leads to cracking and damage after repeated bending, affecting the service life.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model relates to a bend-resistant flame-retardant cable, comprising a bend-resistant sleeve and a cable body. The cable body is provided with reinforcing ribs on the outside, and an elastic sleeve is provided on the outside of the reinforcing ribs. The bend-resistant sleeve is provided on the outside of the elastic sleeve. Bending grooves are uniformly formed on the outside of the bend-resistant sleeve. The bending grooves are V-shaped groove structures. The cable body includes conductors, and there are four conductors. Each of the four conductors is provided with an insulation layer on the outside. Each of the four insulation layers is provided with a filling layer on the outside. A flame-retardant layer is provided on the outside of the filling layer. A shielding layer is provided on the outside of the flame-retardant layer.

[0007] Furthermore, the reinforcing ribs are placed on the outside of the shielding layer.

[0008] Furthermore, the conductor is made of multiple strands of soft copper wire twisted together.

[0009] Furthermore, the elastic sleeve is a spring-structured sleeve that evenly covers the cable body.

[0010] Furthermore, the bending grooves are arranged at equal intervals on the outer surface of the bending-resistant sleeve.

[0011] This utility model has the following beneficial effects:

[0012] 1. This utility model can directionally disperse bending stress through the equidistant V-shaped bending grooves on the outside of the bending-resistant sleeve, avoiding sheath cracking caused by local stress concentration, while maintaining the overall flexibility of the cable. At the same time, the elastic sleeve of the spring structure evenly covers the cable body, providing elastic deformation space during bending and reducing the risk of mechanical damage to the internal conductor and insulation layer.

[0013] 2. This utility model improves tensile strength and avoids electromagnetic interference caused by direct contact with the conductor by placing the reinforcing ribs outside the shielding layer.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the cable structure;

[0016] Figure 2 This is a schematic diagram of the cable explosion structure;

[0017] Figure 3 This is a schematic diagram of a bending-resistant sleeve structure.

[0018] In the diagram: 1. Bending sleeve; 101. Bending groove; 2. Elastic sleeve; 3. Reinforcing rib; 4. Cable body; 401. Conductor; 402. Insulation layer; 403. Filler layer; 404. Flame retardant layer; 405. Shielding layer. 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] Please see Figure 1-3This utility model provides a technical solution: a bend-resistant flame-retardant cable, comprising a bend-resistant sheath 1 and a cable body 4. The cable body 4 is externally provided with reinforcing ribs 3, which are made of aramid fiber such as Kevlar or glass fiber braided layers, making them lightweight and high-strength. The reinforcing ribs 3 enhance the tensile strength of the cable, prevent axial stress from causing tensile deformation of the conductor 401, and fix the relative position of the cable body 4 and the outer sheath to prevent interlayer slippage. An elastic sleeve 2 is externally provided to the reinforcing ribs 3. The elastic sleeve 2 is a spring-structured sleeve that evenly covers the cable body 4. The elastic sleeve 2 acts as a dynamic buffer layer, absorbing the stress caused by bending, vibration, or stretching. Mechanical stress is protected to safeguard the internal structure and uniformly cover the cable body 4, preventing local deformation that could damage the conductor 401. The elastic sleeve 2 is surrounded by a bending-resistant sleeve 1, which is made of highly elastic engineering plastic (such as TPU, polyurethane, or modified PVC), combining flexibility and abrasion resistance. As the outermost layer of protection, the bending-resistant sleeve 1 provides mechanical impact resistance, abrasion resistance, and environmental corrosion resistance. Bending grooves 101 are uniformly formed on the outside of the bending-resistant sleeve 1. The bending grooves 101 are V-shaped grooves, and they are arranged at equal intervals on the outer surface of the bending-resistant sleeve 1. The bending grooves 101 guide bending deformation in a directional manner, preventing stress concentration that could cause the sheath to crack.

[0021] The equidistant V-shaped bending grooves 101 on the outside of the bend-resistant sleeve 1 can directionally disperse bending stress, avoid sheath cracking caused by local stress concentration, and maintain the overall flexibility of the cable. At the same time, the elastic sleeve 2 of the spring structure evenly covers the cable body 4, providing elastic deformation space during bending and reducing the risk of mechanical damage to the internal conductor 401 and insulation layer 402.

[0022] The cable body 4 includes four conductors 401, each made of stranded soft copper wire. These conductors transmit electrical energy or signals and require low resistance and high flexibility. Each of the four conductors 401 has an insulation layer 402, made of cross-linked polyethylene (XLPE) or ethylene propylene rubber (EPR), with some nano-clay added to enhance flame retardancy. This insulation layer serves to insulate the conductors 401 and prevent short circuits, while also balancing flexibility and temperature resistance. A filler layer 403 is located outside the four insulation layers 402. This filler layer 403 is made of flame-retardant polypropylene rope or fiberglass yarn, with some using... Thermally conductive silicone is used to improve heat dissipation, fix the position of conductor 401, buffer internal mechanical stress, and assist in heat dissipation. A flame-retardant layer 404 is provided outside the filling layer 403. The flame-retardant layer 404 is made of ceramicized silicone rubber and halogen-free polyolefin filled with magnesium hydroxide / aluminum hydroxide. It is used to prevent flame spread and suppress the release of smoke and toxic gases. A shielding layer 405 is provided outside the flame-retardant layer 404. The shielding layer 405 is made of aluminum foil Mylar tape + tinned copper wire braided mesh or conductive polymer composite layer. It is used to suppress electromagnetic interference (EMI) and also serves as a flame-retardant barrier. The reinforcing rib 3 is set outside the shielding layer 405.

[0023] By placing the reinforcing rib 3 outside the shielding layer 405, the tensile strength is improved, and electromagnetic interference is avoided by direct contact with the conductor 401.

[0024] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A bend-resistant flame-retardant cable, comprising a bend-resistant sleeve (1) and a cable body (4), characterized in that: The cable body (4) is provided with a reinforcing rib (3) on the outside, an elastic sleeve (2) is provided on the outside of the reinforcing rib (3), and a bending resistant sleeve (1) is provided on the outside of the elastic sleeve (2). The bending sleeve (1) has bending grooves (101) evenly distributed on its exterior, and the bending grooves (101) are V-shaped groove structures. The cable body (4) includes a conductor (401), and there are four conductors (401). Each of the four conductors (401) is provided with an insulation layer (402), a filling layer (403) is provided on the outside of the four insulation layers (402), a flame-retardant layer (404) is provided on the outside of the filling layer (403), and a shielding layer (405) is provided on the outside of the flame-retardant layer (404).

2. The bend-resistant flame-retardant cable according to claim 1, characterized in that, The reinforcing rib (3) is disposed on the outside of the shielding layer (405).

3. The bend-resistant flame-retardant cable according to claim 1, characterized in that, The conductor (401) is made of multiple strands of soft copper wire twisted together.

4. The bend-resistant flame-retardant cable according to claim 1, characterized in that, The elastic sleeve (2) is a sleeve with a spring structure, and the elastic sleeve (2) evenly covers the cable body (4).

5. A bend-resistant flame-retardant cable according to claim 1, characterized in that, The bending grooves (101) are arranged at equal intervals on the outer surface of the bending sleeve (1).

Images