Shielding type multi-strand extra-flexible cable

Abstract

The utility model relates to the technical field of cables, in particular to a shielding type multi-strand extra-flexible cable, which comprises a filling rope and an outer sleeve layer, a plurality of cable units are wound on the outer surface of the filling rope, each cable unit comprises a cable core and an insulating layer, the outer surface of each cable unit is coated with an inner lining layer, and the outer sleeve layer is coated with an outer lining layer. A shielding component is arranged between the lining layer and the outer sleeve layer and comprises a supporting layer. Compared with the prior art, the cable has the advantages that the shielding structure of a traditional metal woven mesh is replaced through the arrangement of the shielding component, the outer surface of the supporting layer is coated with a layer of conductive coating, the conductive coating can form a thin film on the outer surface of the supporting layer, electromagnetic shielding is provided, the influence on the flexibility of the cable is small, and the inner wall of the supporting layer is bonded with a layer of aluminum foil, so that the service life of the cable is prolonged. According to the utility model, a good shielding effect can be provided, the thickness of the aluminum foil is small, the influence on the flexibility of the cable is small, and the design of the two-layer shielding structure can greatly improve the shielding effect.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a shielded multi-strand extra-soft cable. Background Art

[0002] Cable is a device for transmitting electric energy or signals. It is usually composed of several or several groups of wires. Each wire is insulated from each other and twisted around the center. The entire outer surface is covered with a highly insulating covering. It has the characteristics of internal power conduction and external insulation. It is mainly used for power transmission, communication, control signal transmission, and connecting various circuits and electrical equipment.

[0003] For example, the shielded extra-soft bus cable with publication number CN215577891U comprises a plurality of conductor wires, an outer sheath and a copper wire shielding layer, wherein the plurality of conductor wires are arranged in the outer sheath and are evenly spaced around the axis of the outer sheath, a cotton rope is provided at the axis of the outer sheath between the plurality of conductor wires, and the copper wire shielding layer is located between the outer sheath and the conductor wires. In the present technical solution, the shielded extra-soft bus cable has a good shielding type and a strong anti-interference ability due to the copper wire shielding layer provided inside, which greatly enhances the anti-interference performance of the cable, makes signal transmission more stable, and transmits clearer images.

[0004] The above-mentioned shielded extra-soft cable still has the following shortcomings in actual use: the above-mentioned cable is provided with a braided copper mesh as a shielding layer. Although the braided copper mesh can provide excellent shielding effect, due to its structural characteristics, the cable may be subject to certain restrictions when bent or twisted, thereby affecting the flexibility of the cable. Therefore, a shielded multi-strand extra-soft cable is needed to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0006] Therefore, one purpose of the utility model is to provide a shielded multi-strand extra-soft cable to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0007] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides a shielded multi-strand extra-soft cable, including a filling rope and an outer jacket layer, the outer surface of the filling rope is wrapped with a plurality of cable units, the cable units include a wire core and an insulating layer, the outer surfaces of the plurality of cable units are covered with an inner lining layer, a shielding component is arranged between the inner lining layer and the outer jacket layer, the shielding component includes a supporting layer, the outer surface of the supporting layer is coated with a first shielding layer, the outer surface of the first shielding layer is in contact with the inner wall of the outer jacket layer, the inner wall of the supporting layer is bonded with a second shielding layer, and the inner wall of the second shielding layer is in contact with the outer surface of the inner lining layer.

[0008] Preferably, any of the above solutions is that the outer jacket layer, the insulating layer and the supporting layer are all made of polyurethane.

[0009] Preferably, in any of the above schemes, the filling rope is made of polytetrafluoroethylene.

[0010] Preferably, in any of the above schemes, the material of the lining layer is natural fiber.

[0011] Preferably, any of the above solutions is that the material of the first shielding layer is a conductive coating, and the material of the second shielding layer is aluminum foil.

[0012] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0013] 1. Through the setting of shielding components, the shielding structure of the traditional metal braided mesh is replaced. A layer of conductive coating is applied on the outer surface of the supporting layer. The conductive coating can form a thin film on the outer surface of the supporting layer to provide electromagnetic shielding. This material is usually thin and has little effect on the flexibility of the cable. A layer of aluminum foil is bonded to the inner wall of the supporting layer, which can provide a good shielding effect. At the same time, the thickness of the aluminum foil is small, which has little effect on the flexibility of the cable. In addition, the design of the two-layer shielding structure can greatly improve the shielding effect.

[0014] 2. Through the setting of filling rope and inner lining layer. The material of the filling rope is polytetrafluoroethylene, which has an extremely low friction coefficient and can reduce the internal friction of the cable when it is bent or stretched, thereby improving the flexibility and service life of the cable. The material of the inner lining layer is natural fiber, which is light and soft, and has certain flame retardant properties. It can improve the flame retardant properties of the cable without affecting the overall flexibility of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the cable of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of point A of the utility model.

[0017] In the figure: 1-filling rope, 2-jacket layer, 3-cable unit, 301-core, 302-insulating layer, 4-lining layer, 5-shielding member, 501-support layer, 502-first shielding layer, 503-second shielding layer. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following.

[0019] like Figure 1 to Figure 2As shown, a shielded multi-strand extra-soft cable comprises a filling rope 1 and an outer jacket layer 2, a plurality of cable units 3 are wound around the outer surface of the filling rope 1, the cable units comprise a wire core 301 and an insulating layer 302, the outer surfaces of the plurality of cable units 3 are covered with an inner lining layer 4, a shielding member 5 is arranged between the inner lining layer 4 and the outer jacket layer 2, the shielding member 5 comprises a supporting layer 501, a first shielding layer 502 is applied to the outer surface of the supporting layer 501, the outer surface of the first shielding layer 502 is in contact with the inner wall of the outer jacket layer 2, a second shielding layer 503 is bonded to the inner wall of the supporting layer 501, and the inner wall of the second shielding layer 503 is in contact with the outer surface of the inner lining layer 4.

[0020] As an optional technical solution of the present invention, the outer jacket layer 2, the insulating layer 302 and the supporting layer 501 are all made of polyurethane, which is an elastomeric material. They not only have good insulation properties, but also have excellent flexibility and wear resistance, and can significantly improve the bending performance and softness of the cable.

[0021] As an optional technical solution of the present invention, the filling rope 1 is made of polytetrafluoroethylene, which has an extremely low friction coefficient and can reduce the internal friction of the cable when it is bent or stretched, thereby improving the flexibility and service life of the cable.

[0022] As an optional technical solution of the present invention, the material of the inner lining layer 4 is natural fiber. The inner lining layer 4 made of natural fiber is light and soft, and has certain flame retardant properties. It can improve the flame retardant properties of the cable without affecting the overall flexibility of the cable.

[0023] As an optional technical solution of the present invention, the material of the first shielding layer 502 is a conductive coating, and the material of the second shielding layer 503 is aluminum foil. The conductive coating can form a thin film on the outer surface of the supporting layer 501 to provide electromagnetic shielding. This material is usually thin and has little effect on the flexibility of the cable. A layer of aluminum foil is bonded to the inner wall of the supporting layer 501, which can provide a good shielding effect. At the same time, the thickness of the aluminum foil is small, which has little effect on the flexibility of the cable, and the design of the two-layer shielding structure can greatly improve the shielding effect.

[0024] In summary, the shielded multi-strand extra-soft cable replaces the shielding structure of the traditional metal braided mesh by setting the shielding member 5, and a layer of conductive coating is applied on the outer surface of the support layer 501. The conductive coating can form a thin film on the outer surface of the support layer 501 to provide electromagnetic shielding. This material is usually thin and has little effect on the flexibility of the cable. A layer of aluminum foil is bonded to the inner wall of the support layer 501, which can provide a good shielding effect. At the same time, the thickness of the aluminum foil is small, which has little effect on the flexibility of the cable. Moreover, the design of the two-layer shielding structure can greatly improve the shielding effect, through the setting of the filling rope 1 and the inner lining layer 4. The material of the filling rope 1 is polytetrafluoroethylene, which has an extremely low friction coefficient and can reduce the internal friction of the cable when it is bent or stretched, thereby improving the flexibility and service life of the cable. The material of the inner lining layer 4 is natural fiber, which is light and soft, and has certain flame retardant properties. Under the premise of not affecting the overall flexibility of the cable, the flame retardant properties of the cable can be improved.

Claims

1. A shielded multi-strand extra-soft cable, characterized in that: The invention comprises a filling rope (1) and an outer jacket layer (2), wherein a plurality of cable units (3) are wound around the outer surface of the filling rope (1), wherein the cable units comprise a wire core (301) and an insulating layer (302), and the outer surfaces of the plurality of cable units (3) are coated with an inner lining layer (4), wherein a shielding component (5) is arranged between the inner lining layer (4) and the outer jacket layer (2), and wherein the shielding component (5) comprises a supporting layer (501), wherein a first shielding layer (502) is applied to the outer surface of the supporting layer (501), wherein the outer surface of the first shielding layer (502) is in contact with the inner wall of the outer jacket layer (2), wherein a second shielding layer (503) is bonded to the inner wall of the supporting layer (501), and wherein the inner wall of the second shielding layer (503) is in contact with the outer surface of the inner lining layer (4).

2. A shielded multi-strand extra-soft cable according to claim 1, characterized in that: The outer jacket layer (2), the insulating layer (302) and the supporting layer (501) are all made of polyurethane.

3. A shielded multi-strand extra-soft cable according to claim 2, characterized in that: The material of the filling rope (1) is polytetrafluoroethylene.

4. A shielded multi-strand extra-soft cable according to claim 3, characterized in that: The material of the inner lining layer (4) is natural fiber.

5. A shielded multi-strand extra-soft cable according to claim 4, characterized in that: The material of the first shielding layer (502) is a conductive coating, and the material of the second shielding layer (503) is aluminum foil.

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