A multi-core cable

Abstract

The utility model discloses a multicore cable, including the body, the body includes core layer (1), be equipped with a plurality of core wires (2) in the core layer (1), a plurality of core wire (2) is twisted into the shape, and is equipped with the filling strip (3) between the two core wires (2) of adjacent, the filling strip (3) is located the outer layer of core layer (1), the filling strip (3) is hollow and the inside of filling strip (3) is located the support rib (3.1) for preventing the deviation when the core wire (2) is twisted into the bundle. The utility model provides a kind of multicore cable, and filling strip is hollow design, and also can play the kind of core wire torsion deviation prevention.

Description

Technical Field

[0001] This utility model relates to the field of cables, specifically a multi-core cable. Background Technology

[0002] In the forming process of a multi-core cable, multiple core wires in the cable are twisted together to form a bundle, ensuring the high strength and stability of the formed cable. If the diameter of the core wire is large, gaps need to be filled between the core wires to ensure the overall bundle uniformity of the core wire layer and to prevent collapse caused by gaps when forming the outer layer structure of the core wire layer.

[0003] Traditional filler strips mainly use multi-strand bundled filler strips or fan-shaped filler strips that fit the core wire. Bundled filler strips and some fan-shaped filler strips are solid structures, resulting in a fuller filler layer, which significantly increases cable quality and production costs. Some fan-shaped filler strips use a hollow structure, but during stranding, the hollow structure only has simple reinforcing ribs, offering less torsional constraint on the core wire, leading to core wire misalignment and negatively impacting cable forming quality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a multi-core cable with a hollow filler strip that can prevent the core wires from twisting and shifting.

[0005] The technical solution adopted by this utility model to solve the above problems is as follows: a multi-core cable, including a body, the body including a core wire layer, the core wire layer having multiple core wires, the multiple core wires being twisted together, a filler strip being provided between two adjacent core wires, the filler strip being located on the outer layer of the core wire layer, the filler strip being hollow and having a support rib inside for preventing displacement when the core wires are twisted into a bundle.

[0006] Compared with the prior art, the advantages of this utility model are: the design of adding support ribs to the hollow filler strip to prevent the core wire stranding deviation, thereby avoiding the deviation problem during the core wire stranding process. At the same time, because the filler strip is hollow, the weight of the filler strip and the production cost can be reduced.

[0007] As an improvement of this utility model, the filler strip has an outer arc surface on the side away from the center of the body. The radius of the outer arc surface is equal to the radius of the multiple core wires twisted into a bundle. The filler strip has two inner arc surfaces on the side closer to the center of the body. The two inner arc surfaces respectively fit and abut against the surfaces of two adjacent core wires. Through this improvement, the filler strip fits into the two adjacent core wires, ensuring the connection stability between the filler strip and the core wires, and ensuring the roundness of the core wire layers twisted into a bundle, thus ensuring the forming quality of the cable.

[0008] As an improvement of this utility model, there are three supporting ribs, namely a first supporting rib, a second supporting rib, and a third supporting rib. The first supporting rib is arranged radially along an adjacent core wire, the second supporting rib is arranged radially along another adjacent core wire, and the third supporting rib is arranged radially along the body. Through this improvement, the supporting effect of each supporting rib is optimized, and the force direction of the supporting rib is the same as the setting direction of the supporting rib, thereby ensuring that the supporting rib is not prone to tilting during the force process.

[0009] As an improvement of this utility model, the first support rib, the second support rib, and the third support rib intersect at a connection point. Through this improvement, the force on the filler strip and the two core wires connected to the filler strip is concentrated. If one core wire tends to deviate during the twisting process, its force will be shared through the connection point and the other two support ribs, and then the tendency will be transferred to the entire core wire layer. The overall deviation of the core wire layer is equivalent to no deviation, thereby eliminating the tendency of a single core wire to deviate.

[0010] As an improvement of this utility model, the connection point is located on the symmetry line of two adjacent core wires to ensure that the connection point is equidistant from the two segments between the two inner arc surfaces. Through this improvement, the consistency of force transmission between the core wires is ensured, and the structural symmetry of the filler strip is also guaranteed.

[0011] As an improvement of this utility model, the distance between the connecting point and the outer arc surface is equal to the distance between the connecting point and the inner arc surface. Through this improvement, the connecting point is set at the center of the filler strip, ensuring the effectiveness of the filler strip in preventing twisting and shifting. If the connecting point is close to the center of the body, the force transmission effect of the connecting point is similar to the force transmission effect of the two core wires abutting, and it cannot achieve a good anti-shifting effect. If the connecting point is far from the center of the body, that is, close to the outer arc surface, the effect of core wire shifting will be concentrated in the direction of the filler layer, and the anti-shifting effect of the other core wire is low, so it cannot achieve the overall shifting effect, and thus cannot eliminate the trend of single core wire shifting, that is, it tends to the traditional hollow filler strip design.

[0012] As an improvement of this utility model, a reinforcing ring is provided around the connection point. Through this improvement, the structural strength of the three supporting ribs is enhanced, and deformation of the three supporting ribs near the connection point is avoided.

[0013] As an improvement of this utility model, a reinforcing rib is provided on each side of the connection point, and the reinforcing rib is also arranged radially along the connected core wire. Through this improvement, the structural strength of the filler strip is guaranteed, and the structural collapse of the filler strip caused by the hollow design is avoided. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0015] Fig. 2 This is a schematic diagram of the cross-sectional structure of the filler strip of this utility model.

[0016] The diagram shows: 1. Core wire layer, 2. Core wire, 3. Filler strip, 3.1. Support rib, 3.1.1. First support rib, 3.1.2. Second support rib, 3.1.3. Third support rib, 3.1.4. Connection point, 3.2. Outer arc surface, 3.3. Inner arc surface, 3.4. Reinforcing ring, 3.5. Reinforcing rib. Detailed Implementation

[0017] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0018] like Figs. 1-2 As shown, a multi-core cable includes a body, which includes a core layer 1. The core layer 1 contains three core wires 2, which are twisted together. A filler strip 3 is provided between two adjacent core wires 2. The filler strip 3 is located on the outer layer of the core layer 1. The filler strip 3 has an outer arc surface 3.2 on the side away from the center of the body. The radius of the outer arc surface 3.2 is equal to the radius of the multiple core wires 2 twisted together. The filler strip 3 has two inner arc surfaces 3.3 on the side closer to the center of the body. The two inner arc surfaces 3.3 respectively fit and abut against the surfaces of two adjacent core wires 2. The filler strip 3 is hollow and has a support rib 3.1 inside to prevent displacement when the core wires 2 are twisted together.

[0019] After the core wire layer 1 is stranded into a bundle, a wrapping tape is wrapped around the outside of the core wire layer 1 to shape it, and then the outer sheath structure of the cable is added. The core wire 2 structure and the outer sheath structure are both conventional structural designs.

[0020] There are three support ribs 3.1: the first support rib 3.1.1, the second support rib 3.1.2, and the third support rib 3.1.3. The first support rib 3.1.1 is arranged radially along an adjacent core wire 2, the second support rib 3.1.2 is arranged radially along another adjacent core wire 2, and the third support rib 3.1.3 is arranged radially along the body. The first support rib 3.1.1, the second support rib 3.1.2, and the third support rib 3.1.3 intersect at a connection point 3.1.4. The connection point 3.1.4 is located on the line of symmetry between two adjacent core wires 2, so as to ensure that the two distances between the connection point 3.1.4 and the two inner arc surfaces 3.3 are equal, and the distance between the connection point 3.1.4 and the outer arc surface 3.2 is equal to the distance between the connection point 3.1.4 and the inner arc surface 3.3. A reinforcing ring 3.4 is provided around the connection point 3.1.4.

[0021] A reinforcing rib 3.5 is provided on each side of the connection point 3.1.4. The reinforcing rib 3.5 is also arranged radially along the connected core line 2 to ensure the structural strength of the filler strip 3 and avoid structural collapse of the filler strip 3 caused by the hollow design.

[0022] The design of the three supporting ribs 3.1 in the filler strip 3 not only satisfies the structural strength of the filler strip 3 and prevents the collapse of the area of ​​the three supporting ribs 3.1 in the filler strip 3 due to the hollow design of the filler strip 3 during the cable forming process, but also eliminates the offset trend of the core wire 2 during the stranding process, so that the offset trend of a single core wire 2 during the stranding process is transferred to the entire core wire layer 1, thereby eliminating the offset trend.

[0023] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the claims. This utility model is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A multi-core cable comprising a body, characterised in that: The body includes a core wire layer (1), in which multiple core wires (2) are provided. The multiple core wires (2) are twisted together. A filler strip (3) is provided between two adjacent core wires (2). The filler strip (3) is located on the outer layer of the core wire layer (1). The filler strip (3) is hollow and the interior of the filler strip (3) is provided with a support rib (3.1) to prevent displacement when the core wires (2) are twisted together.

2. The multi-core cable according to claim 1, characterized in that: The filler strip (3) has an outer arc surface (3.2) on the side away from the center of the body. The radius of the outer arc surface (3.2) is equal to the radius of the bundle of multiple core wires (2). The filler strip (3) has two inner arc surfaces (3.3) on the side close to the center of the body. The two inner arc surfaces (3.3) respectively fit and abut against the surfaces of two adjacent core wires (2).

3. The multi-conductor cable of claim 2, wherein: There are three supporting ribs (3.1), namely the first supporting rib (3.1.1), the second supporting rib (3.1.2), and the third supporting rib (3.1.3). 3.1.1) The second support rib (3.1.2) is arranged radially along one adjacent core wire (2), the third support rib (3.1.3) is arranged radially along the body.

4. The multi-conductor cable of claim 3, wherein: The first support rib (3.1.1), the second support rib (3.1.2), and the third support rib (3.1.3) intersect at a connection point (3.1.4).

5. A multi-core cable according to claim 4, characterized in that: The connection point (3.1.4) is located on the symmetrical line of two adjacent core wires (2) to ensure that the connection point (3.1.4) is equidistant from the two segments between the two inner arc surfaces (3.3).

6. The multi-conductor cable of claim 5, wherein: The distance between the connecting point (3.1.4) and the outer arc surface (3.2) is equal to the distance between the connecting point (3.1.4) and the inner arc surface (3.3).

7. A multi-core cable according to claim 6, characterized in that: A reinforcing ring (3.4) is provided around the connection point (3.1.4).

8. A multi-core cable according to claim 4, characterized in that: A reinforcing rib (3.5) is provided on each side of the connection point (3.1.4), and the reinforcing rib (3.5) is also arranged radially along the connected core line (2).

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