Composite insulated wire cable for aerospace

Abstract

The utility model belongs to the technical field of wires and cables, and particularly relates to a composite insulated wire and cable for aerospace, which comprises a cable core, a reinforcing rib arranged outside the cable core, a filling layer arranged between the cable core and the reinforcing rib, an inner insulating layer arranged outside the filling layer, an armor strip arranged outside the inner insulating layer, and an outer insulating layer arranged outside the armor strip. The armor strips are spirally wound outside the filling layer, and the number of the armor strips is at least two; firstly, the spliced armoring strips can reduce the occupied space when not assembled and are easy to store, large unwinding and guiding devices are not needed during assembly, only a guiding device for a single armoring sheet needs to be arranged on an assembly line, gaps formed between the armoring strips are embedded with the embedding sheets, and the assembling efficiency is greatly improved. The structure strength of the armoring strips in the cable is increased, the cable is not easy to break away from the fracture after being cut off, the outermost wear-resistant layer plays a role in protecting the outer insulating layer, and the insulating property of the cable core is ensured at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of wires and cables, and particularly relates to a composite insulated wire and cable for aerospace. Background Art

[0002] Wires and cables are wire products used to transmit electrical (magnetic) energy, information and realize electromagnetic energy conversion. Wires and cables in a broad sense are also referred to as cables. Cables in a narrow sense refer to insulated cables, which can be defined as: a collection of the following parts; one or more insulated cores, and their respective coatings, total protective layers and outer sheaths. Cables may also have additional uninsulated conductors;

[0003] Composite insulated cables for aerospace use are cables designed specifically for aerospace environments. They feature composite insulation materials to meet high reliability and high performance requirements under extreme conditions.

[0004] The armor layer inside the composite cable is generally formed by winding a single armor strip. When the cable is cut and needs to be connected, there is no axial limit on the armor sheet, so the armor sheet is easy to detach from the cable after axial pulling. In addition, traditional cables have inner and outer insulation layers outside the cable core and outside the cable, but the outer insulation layer will be greatly worn during use depending on the environment, which will affect the insulation effect.

[0005] In order to solve the above problems, the present application proposes a composite insulated wire and cable for aerospace use. Utility Model Content

[0006] The purpose of the utility model is to provide a composite insulated wire and cable for aerospace, which solves the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a composite insulated wire and cable for aerospace, comprising a cable core, wherein reinforcing ribs are arranged on the outside of the cable core, a filling layer is arranged between the cable core and the reinforcing ribs, an inner insulating layer is arranged on the outside of the filling layer, an armor strip is arranged on the outside of the inner insulating layer, the armor strip is spirally wound on the outside of the filling layer, and there are at least two armor strips, an outer insulating layer is arranged on the outside of the armor strip, and a wear-resistant layer is arranged on the outside of the outer insulating layer.

[0009] Furthermore, the armor strip comprises armor sheets, the armor sheets are spiral-shaped, and the armor strip is formed by connecting a plurality of armor sheets.

[0010] Furthermore, a splicing buckle is formed at one end of the armor sheet, and a splicing port is formed at the other end of the armor sheet, and two adjacent armor sheets are connected by plugging the splicing buckle and the splicing port.

[0011] Furthermore, the front end of the splicing buckle is larger than the connection end with the armor sheet, and the inner side of the splicing interface is larger than the outer side of the end of the armor sheet.

[0012] Furthermore, a fitting piece is formed on the inner side of the outer insulating layer, the inner side of the outer insulating layer is attached to the outer side of the armor strip, and the inner side of the fitting piece is attached to the outer side of the inner insulating layer.

[0013] Furthermore, the armor strips are provided in two pieces, and the engaging piece is located at the gap between the two armor strips.

[0014] Furthermore, the outer insulating layer is a plurality of strips distributed circumferentially, and end surfaces of the plurality of outer insulating layers are closely fitted.

[0015] The utility model has the following beneficial effects:

[0016] The utility model provides a spliced ​​armor strip, and the single armor sheet can reduce the occupied space compared with the coil material, and is easy to store. The spliced ​​structure can also better adapt to the assembly environment, and no large unwinding and guiding device is required. The gaps formed between the armor strips cooperate with the interlocking sheet. Even if the cable is cut, the internal single armor sheet will not spread out or detach from the cross-section position, thereby ensuring the overall structural reliability.

[0017] The utility model arranges the outer insulating layer inside the wear-resistant layer, so that the outer insulating layer will not be worn with the outside, thereby ensuring a good insulation effect, and the circumferentially spliced ​​outer insulating layer can also ensure the sealing of the contact surface under the action of the wear-resistant layer.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure from a bird's-eye view;

[0022] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above;

[0023] Figure 4 It is a schematic diagram of the structure of the connection between the armor strip and the outer insulation layer in the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 1. cable core; 2. reinforcing ribs; 3. filling layer; 4. inner insulation layer; 5. armor strip; 51. armor sheet; 511. splicing buckle; 512. splicing interface; 6. outer insulation layer; 61. mosaic sheet; 7. wear-resistant layer. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] See also Figure 1-4 As shown, the utility model is a composite insulated wire and cable for aerospace use, comprising a cable core 1, a reinforcing rib 2 is arranged on the outside of the cable core 1, a filling layer 3 is arranged between the cable core 1 and the reinforcing rib 2, an inner insulating layer 4 is arranged on the outside of the filling layer 3, an armor strip 5 is arranged on the outside of the inner insulating layer 4, the armor strip 5 is spirally wound on the outside of the filling layer 3, and there are at least two armor strips 5, an outer insulating layer 6 is arranged on the outside of the armor strip 5, and a wear-resistant layer 7 is arranged on the outside of the outer insulating layer 6.

[0029] Among them, the armor strip 5 includes an armor sheet 51, which is spiral. The armor strip 5 is formed by connecting multiple armor sheets 51. In this embodiment, the single armor sheet 51 can reduce the occupied space compared to the coil material and is easy to store. The spliced ​​structure can also better adapt to the assembly environment without the need for large-scale unwinding and guiding settings.

[0030] Among them, a splicing buckle 511 is formed at one end of the armor sheet 51, and a splicing port 512 is formed at the other end of the armor sheet 51. The two adjacent armor sheets 51 are connected by plugging the splicing buckle 511 and the splicing port 512. The front end of the splicing buckle 511 is larger than the connection end with the armor sheet 51, and the inner side of the splicing port 512 is larger than the outer side of the end of the armor sheet 51. The front end of the splicing buckle 511 is larger than the connection end with the armor sheet 51, and the inner side of the splicing port 512 is larger than the outer side of the end of the armor sheet 51. In this embodiment, the large and small heads are arranged to avoid axial separation of the two armor sheets 51. When splicing, they are butt-jointed by radial force. The outer insulating layer 6 and the wear-resistant layer 7 can lock the radially spliced ​​armor sheets 51, so as to facilitate butt joint and ensure structural strength.

[0031] Among them, a fitting piece 61 is formed on the inner side of the outer insulating layer 6, the inner side of the outer insulating layer 6 is attached to the outside of the armor strip 5, and the inner side of the fitting piece 61 is attached to the outside of the inner insulating layer 4. In this embodiment, the outer insulating layer 6 and the armor strip 5 are attached to ensure the structural integrity and compactness, and the fitting of the fitting piece 61 and the inner insulating layer 4 supports the outer insulating layer 6 and ensures its stability in the cable.

[0032] Among them, there are two armor strips 5, and the interlocking piece 61 is located in the gap between the two armor strips 5. In this embodiment, the gap formed between the interlocking piece 61 and the armor strip 5 can effectively increase the axial stability of the armor strip 5 inside the cable, avoid the armor strip 51 from falling off after the cable is cut, thereby ensuring the structural strength.

[0033] The outer insulating layer 6 is a plurality of strips distributed circumferentially, and the end faces of the plurality of outer insulating layers 6 are tightly fitted. In this embodiment, to improve the connection reliability, glue may be applied at the connection of the outer insulating layer 6, or the outer insulating layer 6 may be fused by heat treatment.

[0034] It can be understood that, firstly, the spliced ​​armor strips 5 can reduce the occupied space when not assembled and are easy to store. Moreover, there is no need to rely on large unwinding and guiding devices during assembly. It is only necessary to set a guiding device for the single armor sheet 51 on the assembly line. The gaps formed between the armor strips 5 are engaged with the interlocking sheets 61, which increases the structural strength of the armor strips 5 inside the cable and will not easily detach from the fracture after the cable is cut. Secondly, the outermost wear-resistant layer 7 protects the outer insulating layer 6 and ensures the insulation performance of the cable core 1.

[0035] A specific application of this embodiment is: the cable core 1 and the reinforcing ribs 2 are post-formed with the filling layer 3, and then the inner insulating layer 4 is formed outside the filling layer 3, the armor strips 5 are spirally arranged and there are two of them, and the armor strips 5 are formed by connecting multiple armor sheets 51. The splicing buckles 511 and the splicing interfaces 512 are mutually engaged during connection, and then the outer insulating layer 6 is pasted on the outside to limit the position. After the outer insulating layer 6 is pasted, the engaging piece 61 is embedded between the two spiral armor strips 5, and finally the cable is formed as a whole through the external wear-resistant layer 7.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A composite insulated wire and cable for aerospace use, comprising a cable core (1), a reinforcing rib (2) being provided on the outside of the cable core (1), a filling layer (3) being provided between the cable core (1) and the reinforcing rib (2), an inner insulating layer (4) being provided on the outside of the filling layer (3), characterized in that: An armor strip (5) is provided outside the inner insulating layer (4), the armor strip (5) is spirally wound outside the filling layer (3), and there are at least two armor strips (5). An outer insulating layer (6) is provided outside the armor strip (5), and a wear-resistant layer (7) is provided outside the outer insulating layer (6).

2. The composite insulated wire and cable for aerospace use according to claim 1, characterized in that: The armor strip (5) comprises an armor sheet (51), the armor sheet (51) is spiral-shaped, and the armor strip (5) is formed by connecting a plurality of armor sheets (51).

3. The composite insulated wire and cable for aerospace use according to claim 2, characterized in that: A splicing buckle (511) is formed at one end of the armor sheet (51), and a splicing interface (512) is formed at the other end of the armor sheet (51), and two adjacent armor sheets (51) are connected by plugging the splicing buckle (511) and the splicing interface (512).

4. The composite insulated wire and cable for aerospace use according to claim 3, characterized in that: The front end of the splicing buckle (511) is larger than the connection end with the armor sheet (51), and the inner side of the splicing interface (512) is larger than the outer side of the end of the armor sheet (51).

5. The composite insulated wire and cable for aerospace use according to claim 1, characterized in that: An interlocking piece (61) is formed on the inner side of the outer insulating layer (6), the inner side of the outer insulating layer (6) is attached to the outside of the armor strip (5), and the inner side of the interlocking piece (61) is attached to the outside of the inner insulating layer (4).

6. The composite insulated wire and cable for aerospace use according to claim 5, characterized in that: The armor strips (5) are provided in two pieces, and the engaging piece (61) is located at the gap between the two armor strips (5).

7. The composite insulated wire and cable for aerospace use according to claim 1, characterized in that: The outer insulating layer (6) is a plurality of strips distributed around a circumference, and the end surfaces of the plurality of outer insulating layers (6) are tightly fitted.

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