Anti-bending double-layer composite cable and protection tube thereof

Abstract

The utility model relates to an anti-bending double-layer composite cable and a protection tube thereof, and the cable comprises a plurality of annularly distributed cable cores, the outer surfaces of the plurality of cable cores are sleeved with a flexible limiting clamp of the same annular structure, the outer side of the flexible limiting clamp is sleeved with an inner protection sleeve, and the outer side of the inner protection sleeve is sleeved with an outer protection sleeve. A plurality of annularly distributed rubber rib plates are fixedly mounted on the inner wall of the inner protective sleeve, and when the whole cable is bent, the rubber rib plates can be driven to be bent synchronously, the rubber rib plates can form resistance under the action of self elasticity after being subjected to bending acting force, and meanwhile, the rubber rib plates can be driven to be bent by the rubber rib plates. The rubber rib plates are bent to extrude the inner walls of the through holes to deform and compress air in the air chambers formed between the adjacent rubber partition plates, the compressed air can also form resistance for hindering bending of the cable, bending acting force borne by the cable is resisted and buffered in cooperation with the rubber rib plates, cable core breakage caused by partial excessive bending of the cable is avoided as much as possible, and the service life of the cable is prolonged. And the use of the cable is influenced.

Description

Technical Field

[0001] This utility model belongs to the field of composite cable technology, specifically relating to a bend-resistant double-layer composite cable and its protective tube. Background Technology

[0002] Cables are typically linear structures resembling ropes, consisting of several or groups of conductors twisted together. Each group of conductors is insulated from the others and often twists around a central core. The entire cable is covered with a highly insulating outer layer. Cables are characterized by internal conductivity and external insulation, and are widely used in daily life and industrial production.

[0003] During the extensive laying of cables, they need to be fixed at multiple points, especially where the cable pulling direction changes. The cable will bend, and if the bending angle is too large during the bending process, it may cause the internal conductive core of the cable to break, affecting the normal use of the cable. Utility Model Content

[0004] The purpose of this utility model is to provide a simple and reasonably designed anti-bending double-layer composite cable and its protective tube in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A bend-resistant double-layer composite cable includes multiple ring-shaped cable cores. A flexible limiting clamp with the same ring structure is fitted onto the outer surface of each cable core. An inner protective sleeve is fitted around the flexible limiting clamp. Multiple ring-shaped rubber ribs are fixedly installed on the inner wall of the inner protective sleeve. One end of each rubber rib, away from the inner wall of the inner protective sleeve, extends into the gap between two adjacent cable cores. A through hole is formed along the length of the cable core at the end of each rubber rib located between two adjacent cable cores. Multiple equidistant rubber partitions are linearly installed within the through hole. An air chamber filled with air is left between two adjacent rubber partitions. An outer protective sleeve is also fitted onto the outer surface of the inner protective sleeve.

[0007] As a further optimization of this utility model, the inner cavity of the flexible limiting clamp is provided with a clamping part for clamping and fixing the cable core, and the outer side of the flexible limiting clamp is provided with a groove for accommodating the end of the rubber rib away from the inner protective sleeve.

[0008] As a further optimization of this utility model, a filling cavity is formed between the periphery of the cable core and the inner wall of the flexible limiting clamp, and the filling cavity is filled with a flexible filling material for protecting the cable core.

[0009] As a further optimization of this utility model, the inner protective sleeve has a cylindrical structure, and multiple metal reinforcing wires are threaded through the side wall of the inner protective sleeve along the length direction of the inner protective sleeve, and the metal reinforcing wires are fixedly connected to the side wall of the inner protective sleeve.

[0010] As a further optimization of this utility model, the rubber partition has a circular plate structure, and the periphery of the rubber partition is fixed to the inner wall of the through hole.

[0011] A protective tube includes a flexible protective tube sleeved outside an outer protective sleeve, the inner diameter of the flexible protective tube being equal to the outer diameter of the outer protective sleeve, and a plurality of rubber tabs being annularly distributed on the outer surface of the flexible protective tube, the rubber tabs being integrally formed with the flexible protective tube.

[0012] The beneficial effects of this utility model are as follows: because the inner wall of the inner protective sleeve is provided with multiple rubber ribs, when the entire cable is bent, it will drive the rubber ribs to bend synchronously. After being subjected to bending force, the rubber ribs will form resistance through their own elasticity. At the same time, the bending of the rubber ribs will squeeze the inner wall of the through hole to deform, compressing the air in the air chamber formed between adjacent rubber partitions. The compressed air can also form resistance to the bending of the cable. In conjunction with the rubber ribs, the bending force on the cable is resisted and buffered, thus avoiding the problem of excessive bending of the cable in some areas leading to cable core breakage and affecting the use of the cable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram of the flexible limiting clamp of this utility model;

[0016] Figure 4 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the installation structure of the flexible protective tube and the rubber tab of this utility model.

[0018] In the diagram: 1. Cable core; 2. Flexible limiting clamp; 3. Clamping part; 4. Groove; 5. Filling cavity; 6. Inner protective sleeve; 7. Metal reinforcing wire; 8. Rubber rib; 9. Through hole; 10. Rubber partition; 11. Air chamber; 12. Outer protective sleeve; 13. Flexible protective tube; 14. Rubber protrusion. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1

[0021] like Figure 1 - Figure 4 As shown, the anti-bending double-layer composite cable includes multiple ring-shaped cable cores 1. The outer surface of the multiple cable cores 1 is fitted with a flexible limiting clamp 2 with the same ring structure. The inner cavity of the flexible limiting clamp 2 is provided with a clamping part 3 for clamping and fixing the cable cores 1. The clamping part 3 is fitted on the cable cores 1 to limit the multiple cable cores 1.

[0022] The flexible limiting clamp 2 is fitted with an inner protective sleeve 6. The inner protective sleeve 6 has a cylindrical structure. Multiple metal reinforcing wires 7 are threaded through the side wall of the inner protective sleeve 6 along its length. The metal reinforcing wires 7 are fixedly connected to the side wall of the inner protective sleeve 6. The metal reinforcing wires 7 are used to increase the strength of the inner protective sleeve 6, thereby greatly improving the protection performance of the cable core 1.

[0023] Multiple ring-shaped rubber ribs 8 are fixedly installed on the inner wall of the inner protective sleeve 6. A groove 4 is provided on the outer side of the flexible limiting clamp 2 to accommodate the end of the rubber rib 8 away from the inner protective sleeve 6. The groove 4 is located in the gap between two adjacent cable cores 1. The end of the rubber rib 8 away from the inner wall of the inner protective sleeve 6 extends into the groove 4.

[0024] A filling cavity 5 is formed between the periphery of the cable core 1 and the inner wall of the flexible limiting clamp 2. The filling cavity 5 is filled with a flexible filling material for protecting the cable core 1. The flexible filling material in the filling cavity 5 is used to protect the periphery of the cable core 1 and at the same time, it can prevent the cable core 1 from falling out of the clamping part 3 as much as possible.

[0025] The rubber rib 8 has a through hole 9 at one end between two adjacent cable cores 1 along the length of the cable core 1. Multiple equally spaced rubber partitions 10 are linearly installed in the through hole 9. The rubber partitions 10 have a circular plate structure and are fixed to the inner wall of the through hole 9 on the periphery, so that an air chamber 11 filled with air is left between two adjacent rubber partitions 10. When the rubber rib 8 bends, the inner wall of the through hole 9 will deform and squeeze the air in the air chamber 11. When the air in the air chamber 11 is compressed, it will generate a reverse force, which together with the rubber rib 8 prevents the cable from being excessively deformed and bent.

[0026] An outer protective sleeve 12 is also fitted on the outer surface of the inner protective sleeve 6, forming a double-layer composite structure with the inner protective sleeve 6, which improves the protection performance of the internal cable core 1.

[0027] It should be noted that in this anti-bending double-layer composite cable and its protective tube, a flexible limiting clamp 2 is fitted on the outside of the cable core 1 to clamp and fix the cable core 1. An inner protective sleeve 6 is fitted on the outside of the flexible limiting clamp 2. Since multiple rubber ribs 8 are distributed in a ring on the inner wall of the inner protective sleeve 6, when the entire cable is bent, it will drive the rubber ribs 8 to bend synchronously. After being subjected to bending force, the rubber ribs 8 will form resistance through their own elasticity. At the same time, the inner wall of the through hole 9 opened in the rubber ribs 8 will be deformed, so that the air in the air chamber 11 formed between adjacent rubber partitions 10 will be compressed. The compressed air can also form resistance to the bending of the cable. Together with the rubber ribs 8, it can resist and buffer the bending force on the cable, achieve the effect of buffering bending, and minimize the problem of the cable core 1 breaking due to excessive bending of the cable in some areas, which would affect the use of the cable.

[0028] Example 2

[0029] Further improvements were made based on Example 1, such as... Figure 5 As shown, a protective tube includes a flexible protective tube 13 sleeved outside an outer protective sleeve 12. The inner diameter of the flexible protective tube 13 is equal to the outer diameter of the outer protective sleeve 12. A plurality of rubber tabs 14 are distributed in a ring on the outer surface of the flexible protective tube 13. The rubber tabs 14 are integrally formed with the flexible protective tube 13.

[0030] A flexible protective tube 13 is fitted around the outer protective sleeve 12 to protect the outer protective sleeve 12. Since the flexible protective tube 13 is made of flexible material, it does not affect the small-angle bending of the cable. Rubber tabs 14 are set around the flexible protective tube 13 to protect the flexible protective tube 13. When the cable is laid along the ground, the rubber tabs 14 can support the flexible protective tube 13 until it is detached from the ground, so as to avoid the problem of the flexible protective tube 13 being damaged due to friction with the ground when the cable is pulled.

[0031] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this 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 these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A kink-resistant double-layer composite cable comprising a plurality of cable cores (1) distributed in a ring, characterized in that: A plurality of cable cores (1) are sleeved with a flexible limiting clip (2) of the same annular structure, an inner protective sleeve (6) is sleeved outside the flexible limiting clip (2), a plurality of rubber rib plates (8) are fixedly installed on the inner wall of the inner protective sleeve (6) in an annular distribution, the end of the rubber rib plate (8) away from the inner wall of the inner protective sleeve (6) extends into the gap between adjacent two cable cores (1), the end of the rubber rib plate (8) between the adjacent two cable cores (1) is provided with a through hole (9) along the length direction of the cable core (1), a plurality of rubber partition plates (10) are linearly installed in the through hole (9) at equal intervals, an air chamber (11) filled with air is left between adjacent two rubber partition plates (10), and an outer protective sleeve (12) is further sleeved outside the outer surface of the inner protective sleeve (6).

2. The kink-resistant dual-layer composite cable of claim 1, wherein: A clamping portion (3) for clamping and fixing the cable core (1) is arranged in the inner cavity of the flexible limiting clip (2), and a groove (4) for accommodating the end of the rubber rib plate (8) away from the inner protective sleeve (6) is arranged on the outer side of the flexible limiting clip (2).

3. The kink-resistant dual-layer composite cable of claim 2, wherein: A filling cavity (5) is formed between the periphery of the cable core (1) and the inner wall of the flexible limiting clip (2), and a flexible filling material for protecting the cable core (1) is filled in the filling cavity (5).

4. The kink-resistant dual-layer composite cable of claim 1, wherein: The inner protective sleeve (6) is in a circular tube structure, a plurality of metal reinforcing wires (7) are arranged through the side wall of the inner protective sleeve (6) along the length direction of the inner protective sleeve (6), and the metal reinforcing wires (7) are fixedly connected with the side wall of the inner protective sleeve (6).

5. The kink-resistant dual-layer composite cable of claim 1, wherein: The rubber partition plate (10) is in a circular plate structure, and the periphery of the rubber partition plate (10) is fixedly connected with the inner wall of the through hole (9).

6. A protection tube for the kink-resistant double-layer composite cable according to any one of claims 1 to 5, characterized in that: A flexible protective tube (13) is sleeved outside the outer protective sleeve (12), the inner diameter of the flexible protective tube (13) is equal to the outer diameter of the outer protective sleeve (12), a plurality of rubber tabs (14) are annularly distributed on the outer surface of the flexible protective tube (13), and the rubber tabs (14) are integrally formed with the flexible protective tube (13).

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