Low-smoke halogen-free flat flexible cable

Abstract

The utility model relates to the technical field of electric wires and cables, in particular to a low-smoke halogen-free flat flexible cable, which comprises an outer sheath, an inner sheath and an outer sheath, the outer sides of the wires are sleeved with insulating layers to form wire cores, and the wire cores are located in the containing cavity; the plurality of insulating separation sheets are distributed along the arrangement direction of the wires, the insulating separation sheets are positioned in the accommodating cavity, and the insulating separation sheets extend into gaps between two adjacent wires; according to the invention, the transmission of electric energy can be realized through the wires, the wrapping of the wires can be realized through the insulating layers, the short circuit phenomenon between the adjacent wires can be further avoided, and the two adjacent wires can be further separated through the insulating separation sheets on the basis of the insulating layers. And therefore, the possibility of short circuit caused by the damage of the surface insulating layer between the wires can be further reduced.

Description

Technical Field

[0001] This application relates to the field of wire and cable technology, and in particular to a low-smoke halogen-free flat flexible cable. Background Technology

[0002] Cables are mainly used to transmit electrical energy. Traditional PVC (polyvinyl chloride) cables are prone to decomposition when heated during a fire, releasing large amounts of highly toxic and corrosive HCl (hydrogen chloride) gas and producing large amounts of highly toxic smoke, causing significant loss of life and property and greatly hindering rescue efforts.

[0003] The prior art discloses a halogen-free, low-smoke, flame-retardant elevator integrated flat cable, which includes: a straight flat structure, with power cores, control cores, and signal transmission lines inside; the signal transmission cores include video lines and Cat5e network cables; the video lines and Cat5e network cables are covered with a composite braided layer; the two ends of the integrated flat cable are equipped with load-bearing and tensile-strength reinforcing cores; the distribution of the power cores, control cores, video lines, and Cat5e network cables inside the integrated flat cable is as follows: 3 power cores are located in the middle of the flat cable, 2 control cores are located on both sides of the power cores, and the video lines and Cat5e network cables are located on both sides of the control cores; the video lines and Cat5e network cables are covered with load-bearing and tensile-strength reinforcing cores on the outside.

[0004] Regarding the aforementioned technologies, during cable installation or use, the insulation layer on the power conductor may wear due to relative slippage between two adjacent power conductors, leading to short circuits between the power conductors and posing a significant risk of failure. Utility Model Content

[0005] To reduce the possibility of short circuits between conductors due to damage to the surface insulation layer, this application provides a low-smoke halogen-free flat flexible cable.

[0006] The low-smoke halogen-free flat flexible cable provided in this application adopts the following technical solution:

[0007] A low-smoke halogen-free flat flexible cable includes:

[0008] An outer sheath, wherein the outer sheath is hollow to form a receiving cavity;

[0009] Multiple conductors, wherein an insulating layer is sleeved on the outside of the conductors to form a conductor core, and the conductor core is located within a receiving cavity;

[0010] Multiple insulating separators are distributed along the direction of the conductors, the insulating separators are located within the receiving cavity, and the insulating separators extend into the gap between two adjacent conductors.

[0011] By adopting the above technical solutions, the designed low-smoke halogen-free flat flexible cable can transmit electrical energy through conductors, and can wrap the conductors through insulation layers, thereby avoiding short circuits between adjacent conductors. Insulating separators can further separate two adjacent conductors on the basis of insulation layers, thereby further reducing the possibility of short circuits between conductors due to damage to the surface insulation layer.

[0012] In one specific implementation, the insulating separator is bent to form multiple clamping cavities, and the wire passes through the clamping cavity and abuts against the insulating separator to clamp and fix it.

[0013] By adopting the above technical solution, the designed insulating separator with multiple clamping cavities can first achieve insulation separation between adjacent conductors, and secondly, it can achieve preliminary position limitation of the conductors, thereby facilitating the processing of the outer sheath.

[0014] In one specific implementation, the insulating spacer is formed with a plurality of material-receiving holes, and the material-receiving holes are located between the outer sheath and the insulating layer.

[0015] By adopting the above technical solution, the designed insulating separator with a material receiving hole can allow part of the outer sheath to be embedded into the material receiving hole when the outer sheath is fitted, thereby fixing the relative position between the insulating separator and the outer sheath.

[0016] In one specific implementation, the diameter of the material-containing orifice gradually increases from the side closer to the outer sheath to the side closer to the insulating layer.

[0017] By adopting the above technical solution, the material-accommodating holes with gradually increasing diameters from the side closer to the outer sheath to the side closer to the insulation layer can improve the connection stability between the outer sheath and the insulating separator.

[0018] In one specific implementation scheme, the outer sheath includes a wear-resistant layer, a flame-retardant layer, and a shielding layer arranged sequentially from the outside to the inside.

[0019] By adopting the above technical solution, the designed outer sheath, through layering, can improve abrasion resistance and shielding performance while protecting the wire core.

[0020] In one specific implementation, a tensile reinforcing rope is connected between two adjacent insulating separators, and the tensile reinforcing rope is located within the receiving cavity.

[0021] By adopting the above technical solution, the designed tensile reinforcement rope can improve the overall tensile strength of the cable.

[0022] In one specific implementation, the cavity is filled with a flame-retardant filler.

[0023] By adopting the above technical solutions, the designed flame-retardant filler can improve the flame-retardant performance of cables.

[0024] In one specific implementation, the conductor is made of a bundle of Category 5 soft copper conductors.

[0025] By adopting the above technical solution, the designed bundled wire can achieve conductivity while also having a certain degree of bending capability.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The designed low-smoke halogen-free flat flexible cable can transmit electrical energy through conductors, and the insulation layer can wrap the conductors to avoid short circuits between adjacent conductors. The insulation separator can further separate the two adjacent conductors on the basis of the insulation layer, thereby further reducing the possibility of short circuits between conductors due to damage to the surface insulation layer.

[0028] 2. The designed low-smoke halogen-free flat flexible cable, by forming multiple clamping cavities with insulating separators, can first achieve insulation separation between adjacent conductors, and secondly, can achieve preliminary position determination of the conductors, thereby facilitating the installation and processing of the outer sheath.

[0029] 3. The designed low-smoke halogen-free flat flexible cable, through the insulating separator with a material-receiving hole, allows part of the outer sheath to be embedded into the material-receiving hole when the outer sheath is fitted, thereby fixing the relative position between the insulating separator and the outer sheath. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the low-smoke halogen-free flat flexible cable according to an embodiment of this application.

[0031] Figure 2 Is Figure 1 The diagram shows the structure after the insulating separator is made into multiple clamping cavities.

[0032] Figure 3 yes Figure 2 A schematic diagram of the structure of the insulating separator.

[0033] Figure 4 Is Figure 3 A schematic diagram of the structure after opening material-containing holes on the insulating separator.

[0034] Figure 5 Is Figure 2 A schematic diagram of the structure after adding tensile reinforcing ropes and flame-retardant fillers to the basic structure.

[0035] Explanation of reference numerals in the attached drawings: 1. Outer sheath; 11. Wear-resistant layer; 12. Flame-retardant layer; 13. Shielding layer; 2. Receiving cavity; 3. Wire; 4. Insulation layer; 5. Insulation separator; 51. Clamping cavity; 52. Material receiving hole; 6. Tensile reinforcing rope; 7. Flame-retardant filler. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] This application discloses a low-smoke halogen-free flat flexible cable.

[0038] Reference Figure 1 A low-smoke halogen-free flat flexible cable includes an outer sheath 1 and multiple conductors 3. The outer sheath 1 is hollow, and a flat receiving cavity 2 is formed inside the outer sheath 1. The multiple conductors 3 are arranged in parallel and located inside the receiving cavity 2. The conductors 3 are made of Class 5 soft copper conductor bundles, and the conductor bundles are required to be uniform, tight, and have a smooth surface, free from defects such as oil stains, burrs, sharp edges, scratches, and protrusions. In order to achieve insulation between adjacent conductors 3, the outer side of the conductors 3 is covered with an insulation layer 4 to form a wire core. The insulation layer 4 is made of cross-linked polyethylene insulation material extruded and molded, with an insulation eccentricity of no more than 10%, and the thinnest point of the insulation layer 4 is no less than 90% of the nominal value. The surface is required to be smooth and free from defects such as old glue and scratches. In addition, for easy identification, the insulation layer 4 covering the conductors 3 can be marked with different colors, such as red, yellow, and blue. In this application, the number of wire cores in the receiving cavity 2 can be two, three, or four, as long as the functional requirements of the cable can be met. In this embodiment, the number of wire cores in the receiving cavity 2 is three.

[0039] Reference Figure 1 and Figure 2 Furthermore, during cable installation or use, the insulation layer 4 on the power conductor may wear due to relative sliding between two adjacent power conductors, leading to a short circuit between the power conductors and posing a significant risk. To reduce the possibility of short circuits between conductors 3, multiple insulating separators 5 are included. These separators 5 are distributed along the direction of the conductors 3 and are located within the receiving cavity 2. The insulating separators 5 extend into the gap between two adjacent conductors 3 to assist the insulation layer 4 in providing further insulation isolation.

[0040] Reference Figure 2 and Figure 3 Specifically, after the insulating separator 5 is bent, it forms multiple clamping cavities 51. The outline of the clamping cavity 51 matches the outline of the wire core. After the wire core passes through the clamping cavity 51, it abuts against and is clamped and fixed with the insulating separator 5.

[0041] Reference Figure 3 and Figure 4 The insulating separator 5 has multiple material receiving holes 52 formed on it. The material receiving holes 52 are located between the protective sleeve and the insulating layer 4. In this application, the material receiving holes 52 can be through holes or blind holes. By using the insulating separator 5 with material receiving holes 52, when the outer sheath 1 is fitted, part of the body of the outer sheath 1 can be embedded into the material receiving holes 52, thereby fixing the relative position between the insulating separator 5 and the outer sheath 1.

[0042] Reference Figure 4 Furthermore, the diameter of the material receiving hole 52 gradually increases from the side closer to the outer sheath 1 to the side closer to the insulating layer 4; the connection stability between the outer sheath 1 and the insulating separator 5 can be improved by the material receiving hole 52 with the diameter gradually increasing from the side closer to the outer sheath 1 to the side closer to the insulating layer 4.

[0043] Reference Figure 5 To improve the overall tensile strength of the cable, at least one tensile reinforcing rope 6 is fixedly connected between two adjacent insulating separators 5, and the tensile reinforcing rope 6 is located inside the receiving cavity 2. Specifically, the outer sheath 1 includes a wear-resistant layer 11, a flame-retardant layer 12, and a shielding layer 13 arranged sequentially from the outside to the inside, and the receiving cavity 2 is filled with flame-retardant filler 7 to further improve the flame-retardant performance of the cable. In this application, the number of tensile reinforcing ropes 6 between two adjacent insulating separators 5 can be one, two, or three, as long as it can improve the tensile strength of the cable. In this embodiment, the number of tensile reinforcing ropes 6 between two adjacent insulating separators 5 is three.

[0044] The implementation principle of a low-smoke halogen-free flat flexible cable according to an embodiment of this application is as follows: First, a Class 5 soft copper conductor bundle is made into a conductor 3. Then, an insulation layer 4 is extruded and coated on the outside of the conductor 3 to obtain the wire core. At this time, the already bent insulation separator 5 is connected to the wire core, so that the wire core passes through the clamping cavity 51 formed on the insulation separator 5. At this time, multiple wire cores are arranged in parallel to form the inner core. Then, two adjacent insulation separators 5 are connected by tensile reinforcing ropes 6. Then, an outer sheath 1 is wrapped on the outside, and flame-retardant filler 7 is filled in the receiving cavity 2. Electrical energy can be transmitted through the conductor 3, and the insulation layer 4 can wrap the conductor 3, thereby avoiding short circuits between adjacent conductors 3. The insulation separator 5 can further separate two adjacent conductors 3 on the basis of the insulation layer 4, thereby further reducing the possibility of short circuits between conductors 3 due to damage to the surface insulation layer 4.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A low-smoke halogen-free flat flexible cable, characterized in that: include: Outer sheath (1), the outer sheath (1) is hollow to form a receiving cavity (2); Multiple conductors (3), the outer side of which is covered with an insulating layer (4) to form a core, and the core is located in the receiving cavity (2); Multiple insulating separators (5) are distributed along the setting direction of the conductors (3). The insulating separators (5) are located in the receiving cavity (2) and extend into the gap between two adjacent conductors (3).

2. The low-smoke halogen-free flat flexible cable according to claim 1, characterized in that: After the insulating separator (5) is bent, it forms multiple clamping cavities (51), and the wire (3) passes through the clamping cavity (51) and abuts against the insulating separator (5) to clamp and fix it.

3. The low-smoke halogen-free flat flexible cable according to claim 2, characterized in that: The insulating separator (5) has a plurality of material receiving holes (52), and the material receiving holes (52) are located between the outer sheath (1) and the insulating layer (4).

4. The low-smoke halogen-free flat flexible cable according to claim 3, characterized in that: The diameter of the material receiving hole (52) gradually increases from the side closer to the outer sheath (1) to the side closer to the insulating layer (4).

5. The low-smoke halogen-free flat flexible cable according to claim 1, characterized in that: The outer sheath (1) includes a wear-resistant layer (11), a flame-retardant layer (12), and a shielding layer (13) arranged sequentially from the outside to the inside.

6. The low-smoke halogen-free flat flexible cable according to claim 1, characterized in that: A tensile reinforcing rope (6) is connected between two adjacent insulating separators (5), and the tensile reinforcing rope (6) is located inside the receiving cavity (2).

7. The low-smoke halogen-free flat flexible cable according to claim 1, characterized in that: The cavity (2) is filled with flame-retardant filler (7).

8. The low-smoke halogen-free flat flexible cable according to claim 1, characterized in that: The conductor (3) is made of a bundle of Class 5 soft copper conductors.

Images