Right-handed stranded shielding type composite cable

Abstract

The utility model discloses a right-handed stranded shielding type composite cable, which relates to the technical field of composite cables and comprises a cable body and a shielding layer, a wear-resistant layer is arranged on the outer surface of the cable body, wrapping tapes are mounted on two sides of the inner wall of the wear-resistant layer, the shielding layer is arranged on one side, far away from the wear-resistant layer, of each wrapping tape, and the wear-resistant layer is arranged on the outer surface of the cable body. A shielding layer is arranged in the wrapping tape, an extrusion sheath is arranged on one side, far away from the wrapping tape, of the shielding layer, a first wire tube is arranged on one side, far away from the shielding layer, of the extrusion sheath, four groups of conductors are filled in the first wire tube, and an anti-interference wire tube is placed in the center of the four groups of conductors. Through a metal foil layer and a metal net layer in the composite shielding layer, shielding of the cable is achieved, the shielding effect can be guaranteed, the size of the cable is reduced, and meanwhile the wear-resistant layer arranged on the outer surface of the cable body and the reinforcing wires placed in the centers of the outer layer and the inner layer are arranged on the outer surface of the cable body. The bending angle of the cable body during bending at ordinary times is limited through the reinforcing wires.

Description

Technical Field

[0001] The utility model relates to the technical field of composite cables, in particular to a right-handed twisted shielded composite cable. Background Art

[0002] In particular, optoelectronic composite cable is a new type of cable technology that combines the functions of optical fiber and copper wire and is used as a transmission line in broadband access network systems. The structure of this cable usually includes two parts: the cable core and the sheath, where the sheath includes the sheath and the outer sheath, the latter of which may or may not be required. The structural design of the composite cable is intended to better realize and meet its functions, but when in use, due to the inherent characteristics of the cable, the cable itself will break when bent for a long time. Therefore, a right-handed twisted shielded composite cable is required.

[0003] The application number retrieved is: CN202021615959.3, a composite shielded cable, in which the outer wall of the branch line is connected to the shielding layer and the jacket through glass fiber. It has good insulation, strong heat resistance, good corrosion resistance, high mechanical strength, further prevents leakage, and has good insulation effect.

[0004] However, the existing composite cables still have certain defects in actual use: when the cable is bent, due to the material problem of the cable itself, in order to meet basic needs, the area of ​​the cable body will be too large. At the same time, the cable is prone to damage when bent for a long time. For this reason, we propose a right-handed twisted shielded composite cable. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a right-hand twisted shielded composite cable, which aims to improve the problem that when the cable is bent, due to the material problem of the cable itself, in order to meet basic needs, the area of ​​the cable body will be too large, and the cable is prone to damage when bent for a long time.

[0006] The utility model realizes a right-hand twisted shielded composite cable through the following technical scheme, including a cable body and a shielding layer, the outer surface of the cable body is provided with a wear-resistant layer, and tapes are installed on both sides of the inner wall of the wear-resistant layer, the shielding layer is arranged on the side of the tape away from the wear-resistant layer, and an extruded sheath is arranged on the side of the shielding layer away from the tape, a first wire tube is arranged on the side of the extruded sheath away from the shielding layer, and the first wire tube is filled with four groups of conductors, and an anti-interference wire tube is placed at the center of the four groups of conductors.

[0007] Furthermore, the shielding layer includes a metal foil layer and a metal mesh layer, and a metal mesh layer is provided on the side of the metal foil layer away from the wrapping tape, the metal foil layer is wound clockwise along the outer surface of the metal mesh layer, and the metal foil layer and the metal mesh layer are tightly fitted.

[0008] Furthermore, the conductor includes a wire sleeve and a wire, and multiple groups of wires are placed on both sides of the inner wall of the wire sleeve, and the multiple groups of wires are wound in a right-handed clockwise direction.

[0009] Furthermore, the centers of the first wire tube and the conductor are filled with polymer fillers, and an anti-interference wire tube is provided on a side of the conductor away from the polymer filler.

[0010] Furthermore, the anti-interference wire tube includes a second wire tube and silk wires, and both sides of the inner wall of the second wire tube are filled with silk wires.

[0011] Furthermore, the wear-resistant layer includes an outer layer, a reinforcing wire and an inner layer, and the reinforcing wire is arranged on the right side of the outer layer, and the inner layer is arranged on the side of the reinforcing wire away from the outer layer.

[0012] The utility model provides a right-hand twisted shielded composite cable, which has the following beneficial effects:

[0013] The outer surface of the first wire tube in the cable body is wrapped with a shielding layer, wherein the shielding layer is divided into a metal foil layer and a metal mesh layer. The composite shielding structure is used to reduce the volume of the cable. At the same time, the gap between the first wire tube and the conductor is filled with a polymer filler, which can help the wire maintain its shape when it is bent. While maintaining the shape, it reduces the fatigue caused by bending when the wire is bent. At the same time, with the reinforcement wire of the wear-resistant layer, the angle of the cable body in the natural bending process is limited to protect the internal conductor. The specific contents are as follows:

[0014] The outer surface of the cable body is provided with a wear-resistant layer, and tapes are installed on both sides of the inner wall of the wear-resistant layer, the shielding layer is provided on the side of the tape away from the wear-resistant layer, and an extruded sheath is provided on the side of the shielding layer away from the tape, a first wire tube is provided on the side of the extruded sheath away from the shielding layer, and the first wire tube is filled with four groups of conductors, and an anti-interference wire tube is placed at the center of the four groups of conductors, the shielding layer includes a metal foil layer and a metal mesh layer, and a metal mesh layer is provided on the side of the metal foil layer away from the tape, the metal foil layer is wound clockwise along the outer surface of the metal mesh layer, and the metal foil The layer and the metal mesh layer are tightly fitted, the conductor includes a wire sleeve and a wire, and multiple groups of wires are placed on both sides of the inner wall of the wire sleeve, the multiple groups of wires are wound in a clockwise direction, the center of the first wire tube and the conductor is filled with a polymer filler, and an anti-interference wire tube is arranged on the side of the conductor away from the polymer filler, the anti-interference wire tube includes a second wire tube and silk wire, and both sides of the inner wall of the second wire tube are filled with silk wire; the wear-resistant layer includes an outer layer, a reinforcing wire and an inner layer, and the reinforcing wire is arranged on the right side of the outer layer, and the inner layer is arranged on the side of the reinforcing wire away from the outer layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a right-hand twisted shielded composite cable of the utility model;

[0016] Figure 2 The utility model is a right-hand twisted shielded composite cable Figure 1 The structural diagram at A in the middle;

[0017] Figure 3 It is a schematic structural diagram of a front cross section of a first conductor tube of a right-handed twisted shielded composite cable of the utility model;

[0018] Figure 4 It is a schematic structural diagram of a front cross-section of a wear-resistant layer of a right-handed twisted shielded composite cable of the utility model.

[0019] In the figure: 1. Cable body; 2. Wear-resistant layer; 201. Outer layer; 202. Reinforcement wire; 203. Inner layer; 3. Tape; 4. Metal foil layer; 5. Metal mesh layer; 6. Extruded sheath; 7. First wire tube; 8. Conductor; 801. Wire sheath; 802. Wire; 9. Polymer filler; 10. Anti-interference wire tube; 1001. Second wire tube; 1002. Silk wire; 11. Shielding layer. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figure 1-Figure 4As shown, a right-handed twisted shielded composite cable includes a cable body 1 and a shielding layer 11, the outer surface of the cable body 1 is provided with a wear-resistant layer 2, wherein the wear-resistant layer 2 cooperates with a wrapping tape 3, so that the cable body 1 has wear resistance and corrosion resistance at the same time, so that the cable body 1 itself will not lose its use value when suddenly affected by the external environment, and wrapping tapes 3 are installed on both sides of the inner wall of the wear-resistant layer 2, wherein the wrapping tape 3 is a PTFE tape with a special fibrous microporous structure and excellent temperature resistance. When wrapping the cable, in order to improve the performance and reliability of the cable body 1, the shielding layer 11 is arranged on the side of the wrapping tape 3 away from the wear-resistant layer 2, and the side of the shielding layer 11 away from the wrapping tape 3 is provided with an extruded sheath 6, and the conductor 802 is wrapped by the extruded sheath 6. When the extruded sheath 6 is broken, because the extruded sheath 6 is squeezed by the shielding layer 11, the remaining extruded sheath 6 will still play a role in the cable.

[0022] A first wire tube 7 is provided on the side of the extruded sheath 6 away from the shielding layer 11. The first wire tube 7 is used to place the conductor 8, wherein the four groups of conductors 8 are rotated clockwise inside the first wire tube 7 to form a spiral shape, thereby reducing the space used by the wire 802 inside the first wire tube 7, thereby reducing the volume of the cable body 1, and the first wire tube 7 is filled with four groups of conductors 8, and an anti-interference wire tube 10 is placed at the center of the four groups of conductors 8, and the anti-interference wire is used to reduce or eliminate various interferences to the wire 802 during the transmission process, thereby improving the signal transmission quality and the stability of the system.

[0023] The shielding layer 11 includes a metal foil layer 4 and a metal mesh layer 5, and the metal mesh layer 5 is arranged on the side of the metal foil layer 4 away from the wrapping tape 3, the metal foil layer 4 is wound clockwise along the outer surface of the metal mesh layer 5, and the metal foil layer 4 and the metal mesh layer 5 are tightly fitted, wherein the shielding layer 11 is divided into two parts, namely the metal foil layer 4 and the metal mesh layer 5. The metal foil layer 4 and the metal mesh layer 5 are combined to form a composite shielding layer 11, so that the volume of the cable body 1 is reduced without reducing the shielding performance.

[0024] The conductor 8 includes a wire sleeve 801 and a wire 802, and multiple groups of wires 802 are placed on both sides of the inner wall of the wire sleeve 801. The multiple groups of wires 802 are wound in a right-handed clockwise direction, and the conductor 8 is divided into the wire sleeve 801 and the wire 802. When the wire 802 is placed between the wire sleeves 801, the wire 802 is right-handed in the clockwise direction, so that the wires 802 and the wires 802 are tightly fitted, so that the gap between the wires 802 and the wires 802 is reduced. Therefore, when the wire 802 is placed inside the wire sleeve 801, the area of ​​the conductor 8 can be reduced. The conductor 8 in the cable body 1 can improve the bending performance and flexibility of the cable through the design of multi-strand twisting, thereby reducing the volume of the cable.

[0025] The center of the first wire tube 7 and the conductor 8 is filled with a polymer filler 9. Adding fillers inside the cable can help the cable maintain its shape when bending, reduce internal damage, and improve the overall flexibility of the cable. Therefore, when bending, there is the assistance of the filler, and an anti-interference wire tube 10 is provided on the side of the conductor 8 away from the polymer filler 9.

[0026] The anti-interference wire tube 10 includes a second wire tube 1001 and a wire 1002 , and the wire 1002 is filled on both sides of the inner wall of the second wire tube 1001 , wherein the wire 1002 is placed inside the second wire tube 1001 , and the anti-interference wire tube 10 is surrounded by the conductor 8 .

[0027] The wear-resistant layer 2 includes an outer layer 201, a reinforcing wire 202 and an inner layer 203, and the reinforcing wire 202 is arranged on the right side of the outer layer 201, and the inner layer 203 is arranged on the side of the reinforcing wire 202 away from the outer layer 201, wherein the wear-resistant layer 2 is divided into an outer layer 201 and an inner layer 203, and reinforcing wires 202 are installed in the outer layer 201 and the inner layer 203, which are used to improve the wear resistance of the wear-resistant layer 2. At the same time, the reinforcing wires 202 are used to limit the extrusion of the bending node when the wear-resistant layer 2 is bent. When a greater force is not applied to the wear-resistant layer 2, the bending angle of the wear-resistant layer 2 will be limited.

[0028] In summary, the utility model rotates the wire 802 clockwise through the cable body 1 and the shielding layer 11 so that the gap between the wires 802 is reduced, and the wire 802 that has completed the right-hand rotation is placed in the wire sleeve 801, and then the anti-interference wire tube 10 is placed at the center of the four groups of conductors 8, so that the conductor 8 rotates clockwise along the anti-interference wire tube 10 to complete the right-hand rotation, and the right-handed conductor 8 and the anti-interference wire tube 10 are placed in the first wire tube 7, and the polymer filler 9 is filled in the gap between the conductor 8 and the first wire tube 7, so that when bending, it can help the cable maintain its shape when bending and reduce internal damage. After the placement of the polymer filler 9 is completed, on the outside of the first wire tube 7 An extruded sheath 6 is placed on the surface to protect the internal structure of the first wire tube 7. At the same time, a seal is formed in the first wire tube 7 while the extruded sheath 6 is wound. After the extruded sheath 6 is wound, the metal mesh layer 5 in the shielding layer 11 is wound in the extruded sheath 6, and then the metal foil layer 4 is attached to the outer surface of the metal mesh layer 5. After the shielding layer 11 is wound, a tape 3 is placed on the outer surface of the shielding layer 11, and a wear-resistant layer 2 is placed on the outer surface of the tape 3, wherein the wear-resistant layer 2 is divided into an outer layer 201, an inner layer 203 and a reinforcing wire 202. Therefore, when the cable body 1 is bent, the reinforcing wire 202 can limit the bending angle of the cable body 1 during natural bending to protect the cable body 1.

Claims

1. A right-hand twisted shielded composite cable, comprising a cable body (1) and a shielding layer (11), characterized in that: The outer surface of the cable body (1) is provided with a wear-resistant layer (2), and tapes (3) are installed on both sides of the inner wall of the wear-resistant layer (2), the shielding layer (11) is provided on a side of the tape (3) away from the wear-resistant layer (2), and an extruded sheath (6) is provided on a side of the shielding layer (11) away from the tape (3), and a first wire tube (7) is provided on a side of the extruded sheath (6) away from the shielding layer (11), and the first wire tube (7) is filled with four groups of conductors (8), and an anti-interference wire tube (10) is placed at the center of the four groups of conductors (8).

2. A right-hand twisted shielded composite cable according to claim 1, characterized in that: The shielding layer (11) comprises a metal foil layer (4) and a metal mesh layer (5), and a metal mesh layer (5) is provided on a side of the metal foil layer (4) away from the wrapping tape (3), the metal foil layer (4) is wound clockwise along the outer surface of the metal mesh layer (5), and the metal foil layer (4) and the metal mesh layer (5) are tightly fitted.

3. The right-hand twisted shielded composite cable according to claim 1, characterized in that: The conductor (8) comprises a wire sleeve (801) and a wire (802), and a plurality of groups of wires (802) are placed on both sides of the inner wall of the wire sleeve (801), and the plurality of groups of wires (802) are wound in a right-handed manner in a clockwise direction.

4. The right-hand twisted shielded composite cable according to claim 1, characterized in that: The centers of the first wire tube (7) and the conductor (8) are filled with a polymer filler (9), and an anti-interference wire tube (10) is provided on a side of the conductor (8) away from the polymer filler (9).

5. The right-hand twisted shielded composite cable according to claim 4, characterized in that: The anti-interference wire tube (10) comprises a second wire tube (1001) and a silk thread (1002), and both sides of the inner wall of the second wire tube (1001) are filled with the silk thread (1002).

6. The right-hand twisted shielded composite cable according to claim 1, characterized in that: The wear-resistant layer (2) comprises an outer layer (201), a reinforcing wire (202) and an inner layer (203), wherein the reinforcing wire (202) is arranged on the right side of the outer layer (201), and the inner layer (203) is arranged on the side of the reinforcing wire (202) away from the outer layer (201).

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