Flexible cable with bending resistance

Abstract

The utility model relates to the technical field of cables, and discloses a flexible cable with bending resistance, which comprises four cable copper conductors and a plurality of bending contraction strips, the outer surfaces of the four cable copper conductors are coated with conductor insulating skins for protecting the cable copper conductors, and the bending contraction strips are arranged on the cable copper conductors. The outer surfaces of the four conductor insulation skins are fixedly connected with a conductor fixing layer used for fixing four cable copper conductors, and four triangular elastic strips used for improving the strength of the cable are fixedly connected in the conductor fixing layer. When the cable is bent, the bending contraction strips located on the inner side of the bending extrude each other, so that the contraction gap and the bending seam area of the inner side of the bending can contract and become smaller, the stress is offset, the inner side of the cable cannot be compressed and cracked when the cable is bent, the bending stability of the cable is improved, and the service life of the cable is prevented from being shortened due to excessive bending of the cable.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a flexible cable with bending resistance. Background Art

[0002] Cable is a wire product used to transmit electrical energy and information and realize electromagnetic energy conversion. It is made of one or more mutually insulated conductors wrapped with insulation and protective layers to transmit electricity or information from one place to another. Cable is usually a rope-like cable made of several or several groups of wires twisted together. Each group of wires is insulated from each other and often twisted around a center. The entire outside is covered with a highly insulating covering. The cable has an inner sheath and sometimes an outer sheath with high mechanical strength. The structure is relatively complex.

[0003] When the cable material is bent too many times or excessively, stress concentration will cause a certain degree of cracking or damage, resulting in a reduction in its service life, weakened insulation performance, and may even cause equipment failure and fire, which will greatly affect the normal use of the cable. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the utility model provides a flexible cable with bending resistance, which has the advantages of bending resistance, wear resistance, not easy to break, effective flame retardancy, and insect resistance. It solves the problem that when the cable is bent too many times or excessively, it will produce a certain degree of cracking or damage due to stress concentration, resulting in a reduction in its service life.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purposes of bending resistance, wear resistance, not easy to break, effective flame retardancy and insect resistance, the utility model provides the following technical solutions: a flexible cable with bending resistance, comprising four cable copper conductors and a plurality of bending shrinkage strips, the outer surfaces of the four cable copper conductors are all covered with conductor insulation skins for protecting the cable copper conductors, and the outer surfaces of the four conductor insulation skins are fixedly connected with a conductor fixing layer for fixing the four cable copper conductors;

[0008] Among them, four triangular elastic strips for improving the strength of the cable are fixedly connected in the conductor fixing layer, and the triangular elastic strips are all located between two adjacent conductor insulation skins.

[0009] Preferably, the outer surface of the conductor fixing layer is fixedly connected with an anti-corrosion rubber layer, the material of the anti-corrosion rubber layer is hydrogenated nitrile butadiene, the outer surface of the anti-corrosion rubber layer is fixedly connected with a hexagonal insect-proof layer, and insect-proof herbs are arranged in the hexagonal insect-proof layer.

[0010] Preferably, the outer surface fixing sleeve of the hexagonal insect-proof layer is provided with a woven layer, the material of the woven layer is ceramic fiber woven, and a plurality of reinforcing ribs for improving the tensile strength are arranged in the gap between the woven layer and the hexagonal insect-proof layer, and the material of the reinforcing ribs is metal wire and nylon fiber.

[0011] Preferably, the multiple bending and shrinkage strips are all wrapped and fixed on the outer surface of the woven layer, the gaps between the multiple bending and shrinkage strips are shrinkage gaps, the outer surface of the bending and shrinkage strips is provided with multiple bending seams, the multiple bending seams are evenly distributed at equal distances, and the outer surface of the bending and shrinkage strip is fixed with a flame retardant layer.

[0012] Preferably, the flame retardant layer is made of ceramic silicone rubber, and the outer surface of the flame retardant layer is fixedly sleeved with an outer wear-resistant layer, and the material of the outer wear-resistant layer is polytetrafluoroethylene.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a flexible cable with bending resistance, which has the following beneficial effects:

[0015] 1. The flexible cable with bending resistance is provided with a plurality of bending and shrinking strips. When the cable is bent, the bending and shrinking strips located on the inner side of the bend squeeze each other, so that the shrinkage gap and the bending seam area on the inner side of the bend shrink and become smaller, thereby offsetting the stress, so that the inner side of the cable will not be compressed and cracked when bent, thereby improving the bending stability of the cable and avoiding the reduction of the service life of the cable due to excessive bending.

[0016] 2. The flexible cable with bending resistance has a flame retardant layer made of ceramic silicone rubber, which has excellent flame retardancy. When a short circuit occurs in the cable and a fire occurs, the fire will not continue to burn along the direction of the cable, thus avoiding the fire from continuing to spread after a short circuit occurs in the cable and causing a secondary accident, thereby improving the safety of the cable when in use.

[0017] 3. The flexible cable with bending resistance has an insect-proof layer and an anti-corrosion rubber layer as insect-proof herbs. When the insect-proof layer and the anti-corrosion rubber layer are subjected to the heat emitted by the cable, they will emit a smell that inhibits insects from approaching, thereby avoiding the cable from being gnawed by insects and causing a short circuit, further improving the safety and ensuring the normal transmission of the cable.

[0018] 4. The flexible cable with bending resistance has an anti-corrosion rubber layer made of hydrogenated nitrile, which has excellent corrosion resistance, tear resistance and compression deformation resistance, good ozone resistance, sunlight resistance and weather resistance, and is more wear-resistant than nitrile rubber. It can effectively prevent corrosion of the cable and avoid cable exposure caused by corrosion from external factors.

[0019] 5. The flexible cable with bending resistance has an outer wear-resistant layer made of polytetrafluoroethylene, which is resistant to acids, alkalis and various organic solvents. It also has good wear resistance and can effectively prevent damage caused by external wear during cable use, thereby improving the stability of cable data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the cable of the utility model;

[0022] Figure 3 For this utility model Figure 1 Enlarged schematic diagram at point A in the middle.

[0023] In the figure: 1. Cable copper conductor; 2. Conductor insulation skin; 3. Conductor fixing layer; 4. Triangular elastic strip; 5. Anti-corrosion rubber layer; 6. Hexagonal insect-proof layer; 7. Reinforced ribs; 8. Braided layer; 9. Bending shrinkage strip; 10. Shrinkage gap; 11. Flame retardant layer; 12. Outer wear-resistant layer; 13. Bending seam. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-3 The utility model provides a new technical solution: a flexible cable with bending resistance, comprising four cable copper conductors 1 and a plurality of bending shrinkage strips 9, the outer surfaces of the four cable copper conductors 1 are covered with conductor insulation skins 2 for protecting the cable copper conductors 1, and the outer surfaces of the four conductor insulation skins 2 are fixedly connected with conductor fixing layers 3 for fixing the four cable copper conductors 1;

[0026] Among them, four triangular elastic strips 4 for improving the strength of the cable are fixedly connected in the conductor fixing layer 3 , and the triangular elastic strips 4 are all located between two adjacent conductor insulation skins 2 .

[0027] Furthermore, the outer surface of the conductor fixing layer 3 is fixedly connected with an anti-corrosion rubber layer 5, and the material of the anti-corrosion rubber layer 5 is hydrogenated nitrile, which has excellent corrosion resistance, tear resistance and compression deformation resistance, and has good ozone resistance, sunlight resistance, and weather resistance. It has better wear resistance than nitrile rubber, and can effectively play an anti-corrosion role on the cable, avoiding the exposure of the cable caused by corrosion from external factors. The outer surface of the anti-corrosion rubber layer 5 is fixedly connected with a hexagonal insect-proof layer 6, and the hexagonal insect-proof layer 6 is provided with insect-proof herbs. The insect-proof layer anti-corrosion rubber layer 5 is an insect-proof herb, which can make the insect-proof layer anti-corrosion rubber layer 5 emit an odor that inhibits insects from approaching when it is subjected to the heat emitted by the cable, thereby avoiding the occurrence of short circuits caused by the cable being gnawed by insects, further improving the safety and ensuring the normal transmission of the cable.

[0028] Furthermore, a braided layer 8 is fixedly sleeved on the outer surface of the hexagonal insect-proof layer 6. The braided layer 8 is made of ceramic fiber braid. A plurality of reinforcing ribs 7 for improving the tensile strength are arranged in the gap between the braided layer 8 and the hexagonal insect-proof layer 6.

[0029] Furthermore, the reinforcing ribs 7 are made of metal wires and nylon fibers, which can strengthen the flexibility and strength of the cable layer, so that it can provide better protection function. Multiple bending and shrinkage strips 9 are all wound and fixed on the outer surface of the braided layer 8. The gaps between the multiple bending and shrinkage strips 9 are shrinkage gaps 10. The outer surface of the bending and shrinkage strips 9 is provided with multiple bending seams 13, and the multiple bending seams 13 are evenly distributed at equal intervals. When the cable is bent, the bending and shrinkage strips 9 located on the inner side of the bend squeeze each other, so that the shrinkage gap 10 and the bending seam 13 on the inner side of the bend will shrink and become smaller, thereby offsetting the stress, so that the inner side of the cable will not be compressed and cracked when bent, thereby improving the bending stability of the cable and avoiding the reduction in the service life of the cable due to excessive bending. The outer surface of the bending and shrinkage strips 9 is fixedly sleeved with a flame retardant layer 11.

[0030] Furthermore, the flame retardant layer 11 is made of ceramic silicone rubber, which has excellent flame retardancy. When a short circuit occurs in the cable and a fire occurs, the fire will not continue to burn along the direction of the cable, thereby avoiding the fire from continuing to spread after a short circuit occurs in the cable and causing a secondary accident, thereby improving the safety of the cable when in use. The outer surface of the flame retardant layer 11 is fixedly sleeved with an outer wear-resistant layer 12, and the material of the outer wear-resistant layer 12 is polytetrafluoroethylene, which is resistant to acids and alkalis and various organic solvents, and also has good wear resistance, which can effectively prevent damage caused by external wear when the cable is in use, thereby improving the stability of cable data transmission.

[0031] Working principle: by setting up multiple bending and shrinkage strips, when the cable is bent, the bending and shrinkage strips 9 located on the inner side of the bend squeeze each other, so that the shrinkage gap 10 and the bending seam 13 on the inner side of the bend will shrink and become smaller, thereby offsetting the stress, so that the inner side of the cable will not be compressed and cracked when bent, thereby improving the bending stability of the cable and avoiding the reduction in the life of the cable due to excessive bending.

[0032] The flame retardant layer 11 is made of ceramic silicone rubber, which has excellent flame retardancy. When a short circuit occurs in the cable and a fire occurs, the fire will not continue to burn along the direction of the cable, thereby avoiding the fire from continuing to spread after a short circuit occurs in the cable and causing a secondary accident, thereby improving the safety of the cable when in use.

[0033] The insect-proof and anti-corrosion rubber layer 5 is an insect-proof herb. When the insect-proof and anti-corrosion rubber layer 5 is subjected to the heat emitted by the cable, it will emit a smell that inhibits insects from approaching, thereby avoiding the cable from being gnawed by insects and causing a short circuit, further improving safety and ensuring the normal transmission of the cable.

[0034] The anti-corrosion rubber layer 5 is made of hydrogenated nitrile butadiene rubber, which has excellent corrosion resistance, tear resistance and compression deformation resistance, good ozone resistance, sunlight resistance and weather resistance, and is more wear-resistant than nitrile butadiene rubber. It can effectively prevent corrosion of cables and avoid cable exposure caused by corrosion from external factors.

[0035] The material of the outer wear-resistant layer 12 is polytetrafluoroethylene, which is resistant to acids, alkalis and various organic solvents and also has good wear resistance. It can effectively prevent damage caused by external wear during cable use and improve the stability of cable data transmission.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible cable with bending resistance, comprising four cable copper conductors (1) and a plurality of bending and shrinking strips (9), characterized in that: The outer surfaces of the four cable copper conductors (1) are all covered with conductor insulation (2) for protecting the cable copper conductors (1), and the outer surfaces of the four conductor insulation (2) are fixedly connected with a conductor fixing layer (3) for fixing the four cable copper conductors (1); Four triangular elastic strips (4) for improving the strength of the cable are fixedly connected inside the conductor fixing layer (3), and the triangular elastic strips (4) are all located between two adjacent conductor insulation skins (2).

2. A flexible cable with bending resistance according to claim 1, characterized in that: The outer surface of the conductor fixing layer (3) is fixedly connected with an anti-corrosion rubber layer (5), the material of the anti-corrosion rubber layer (5) is hydrogenated nitrile butadiene rubber, and the outer surface of the anti-corrosion rubber layer (5) is fixedly connected with a hexagonal insect-proof layer (6), and insect-proof herbs are arranged in the hexagonal insect-proof layer (6).

3. A flexible cable with bending resistance according to claim 2, characterized in that: The outer surface of the hexagonal insect-proof layer (6) is fixedly sleeved with a braided layer (8), the braided layer (8) is made of ceramic fiber braiding, and a plurality of reinforcing ribs (7) for improving the tensile strength are arranged in the gap between the braided layer (8) and the hexagonal insect-proof layer (6), the reinforcing ribs (7) are made of metal wires and nylon fibers.

4. A flexible cable with bending resistance according to claim 3, characterized in that: The plurality of bending and shrinking strips (9) are all wound and fixed on the outer surface of the braided layer (8); the gaps between the plurality of bending and shrinking strips (9) are shrinkage gaps (10); the outer surface of the bending and shrinking strip (9) is provided with a plurality of bending slits (13); the plurality of bending slits (13) are evenly distributed at equal intervals; and the outer surface of the bending and shrinking strip (9) is fixedly sleeved with a flame retardant layer (11).

5. A flexible cable with bending resistance according to claim 4, characterized in that: The flame retardant layer (11) is made of ceramic silicone rubber, and the outer surface of the flame retardant layer (11) is fixedly sleeved with an outer wear-resistant layer (12), and the outer wear-resistant layer (12) is made of polytetrafluoroethylene.

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