Military anti-electromagnetic wire cable

Abstract

The utility model discloses a military anti-electromagnetic wire and cable, which belongs to the technical field of wires and cables and comprises a cable core, a second shielding layer and a sheath layer which are sequentially arranged from inside to outside. The cable core comprises two aligned outer conductor wire harnesses and two aligned inner conductor wire harnesses, the outer sides of the two inner conductor wire harnesses are jointly coated with a first shielding layer, the two outer conductor wire harnesses are arranged on the two sides of the middle of the first shielding layer respectively, the two layers of the middle of the first shielding layer are arc-shaped sections attached to the outer conductor wire harnesses on the corresponding sides respectively, and the two layers of the middle of the first shielding layer are arc-shaped sections attached to the outer conductor wire harnesses on the corresponding sides respectively. The two arc-shaped sections in the middle of the first shielding layer are attached to each other; and the second shielding layer is tightly wrapped on the outer sides of the outer conductor wire harness and the first shielding layer. According to the utility model, through the special arrangement of the first shielding layer, the electromagnetic shielding effect between different conductor wire harnesses in the cable is realized, and the electromagnetic shielding performance of the cable can be improved; moreover, the shielding layer can be deformed in the assembly process, thereby improving the comprehensiveness of the electromagnetic shielding of the cable, and promoting the gathering and forming of the cable core.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of wires and cables, in particular to a military anti-electromagnetic wire and cable. Background Art

[0002] Modern military vehicles are powerful and equipped with many mobile instruments and meters. In order to supply power to various mobile electrical equipment and facilitate installation, a flexible cable with a small bending radius, tensile resistance, and frequent retraction is required; at the same time, the power soft cable must be shielded to meet the anti-interference ability. For example, in the patent with the authorization announcement number CN 207663810 U, a military elastomer soft cable is disclosed, which adopts a multi-strand fine copper wire bundle twisted conductor and a tinned copper wire braided layer structure to ensure the product's conductivity and anti-electromagnetic interference ability; the polyether polyurethane thermoplastic polymer material sheath layer adopted can ensure the low temperature resistance and tear resistance of the cable, solve the previous problems of similar cables such as wear resistance and tear resistance, cracking at low temperature, etc., so that the cable has excellent tensile strength, tear resistance, wear resistance, and low temperature cracking resistance; coupled with the cable's softness and the surface's thermally sensitive color-changing layer, etc., it further ensures the normal use of the cable under harsh military environment conditions. However, the cable has the following disadvantages: the cable only relies on a shielding layer made of tinned copper wire to achieve electromagnetic shielding effect, and the anti-electromagnetic interference performance is weak, and the electromagnetic shielding effect cannot be achieved between the conductor bundles of the cable core, resulting in the possibility that different conductor bundles may be affected by electromagnetic interference. In addition, the electromagnetic shielding layer is set in a tightly wrapped manner, and the cable cannot achieve other functions during the process of wrapping the electromagnetic shielding layer. Utility Model Content

[0003] The technical solution of the utility model is aimed at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. It mainly provides a military anti-electromagnetic wire and cable to solve the technical problems proposed in the above background technology that the electromagnetic shielding effect cannot be achieved between the various conductor bundles and the cable cannot achieve other functions in the process of wrapping the electromagnetic shielding layer.

[0004] The technical solution adopted by the utility model to solve the above technical problems is:

[0005] A military anti-electromagnetic wire and cable comprises a cable core, a second shielding layer and a sheath layer which are arranged in sequence from the inside to the outside; the cable core comprises two aligned outer conductor harnesses and two aligned inner conductor harnesses, and the line between the two outer conductor harnesses is perpendicular to the line between the two inner conductor harnesses, and the two outer conductor harnesses are arranged between the two inner conductor harnesses; the outer sides of the two inner conductor harnesses are jointly covered with a first shielding layer, and the two outer conductor harnesses are respectively arranged on both sides of the middle of the first shielding layer, and the two layers in the middle of the first shielding layer are arc segments respectively fitted with the outer conductor harnesses on the corresponding sides, and the two arc segments in the middle of the first shielding layer are fitted with each other; the second shielding layer is tightly wrapped around the outer conductor harnesses and the outer sides of the first shielding layer.

[0006] Furthermore, the spacing between the two inner conductor bundles is greater than the spacing between the two outer conductor bundles, and the cross-section of the second shielding layer is rhombus-shaped.

[0007] Furthermore, a self-lubricating layer is wrapped around the outer side of the second shielding layer.

[0008] Furthermore, a third shielding layer is provided on the outside of the outer conductor harness and is arc-shaped and fits the outer conductor harness, and both sides of the third shielding layer are in contact with the first shielding layer, and the second shielding layer is wrapped around the outside of the third shielding layer and the first shielding layer.

[0009] Furthermore, a reinforcement body is provided in a gap between both sides of the outer conductor harness and the first shielding layer, and the reinforcement body is in contact with the second shielding layer.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model arranges two outer conductor harnesses and two inner conductor harnesses in the cable core, and the outer sides of the two inner conductor harnesses are covered with a first shielding layer, so as to achieve the electromagnetic shielding effect between the inner conductor harnesses and the outer conductor harnesses; at the same time, the two outer conductor harnesses are arranged on both sides of the first shielding layer, so as to achieve the electromagnetic shielding effect between the two outer conductor harnesses; and the two outer conductor harnesses squeeze the middle part of the first shielding layer, so that the two arc segments in the middle part of the first shielding layer fit each other, so as to achieve the electromagnetic shielding effect between the two inner conductor harnesses. The three shielding effects are combined to achieve the electromagnetic shielding effect between different conductor harnesses in the cable, so as to improve the electromagnetic shielding performance of the cable.

[0012] The first shielding layer in the utility model is not simply tightly wrapped around the outside of the conductor harness. Compared with the method of wrapping the shielding layer separately around the outside of the two inner conductor harnesses, the utility model wraps the first shielding layer together around the outside of the two inner conductor harnesses, and then under the extrusion of the two outer conductor harnesses, the two layers in the middle of the first shielding layer fit each other, thereby realizing the electromagnetic shielding between the two inner conductor harnesses, that is, the wrapping operation of the shielding layer can be reduced, and the electromagnetic shielding effect between different conductor harnesses can also be effectively realized. In addition, the second shielding layer is tightly wrapped around the outer conductor harness and the outside of the first shielding layer. During the wrapping process, the outer conductor harness and the inner conductor harness will be squeezed to gather inward. At the same time, the process of the two outer conductor harnesses approaching each other will push the two layers in the middle of the first shielding layer to fit each other. The first shielding layer is in a tight state, which will drive the two inner conductor harnesses to approach each other, until the outer conductor harness, the first shielding layer, and the inner conductor harness are pressed together. In the process of wrapping the electromagnetic shielding layer, the cable of the utility model can not only realize the assembly of the shielding layer, but also realize the extrusion deformation of the first shielding layer to improve the comprehensiveness of the electromagnetic shielding of the cable, and can promote the gathering and molding of the cable core.

[0013] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the cable cross section in the first embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of a cable cross section in the second embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the cable cross section in the third embodiment of the present utility model;

[0017] Reference numerals:

[0018] 1. Outer conductor harness; 2. Inner conductor harness; 3. First shielding layer; 4. Second shielding layer; 5. Self-lubricating layer; 6. Sheath layer; 7. Third shielding layer; 8. Reinforcement body. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field of the present invention. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] Example 1: Please refer to the attached Figure 1 A military anti-electromagnetic wire and cable comprises a cable core, a second shielding layer 4, a self-lubricating layer 5 and a sheath layer 6 which are arranged in sequence from the inside to the outside.

[0023] The cable core includes two aligned outer conductor bundles 1 and two aligned inner conductor bundles 2, and the line between the two outer conductor bundles 1 is perpendicular to the line between the two inner conductor bundles 2, the two outer conductor bundles 1 are arranged between the two inner conductor bundles 2, and the spacing between the two inner conductor bundles 2 is greater than the spacing between the two outer conductor bundles 1; the outer conductor bundles 1 and the inner conductor bundles 2 both include a conductor formed by twisting multiple strands of nickel-plated copper wires and an insulating layer wrapped around the outside of the conductor, and the insulating layer is made of ethylene propylene rubber elastic material.

[0024] The outer sides of the two inner conductor harnesses 2 are covered with a first shielding layer 3, and the two outer conductor harnesses 1 are respectively arranged on both sides of the middle of the first shielding layer 3. The two layers in the middle of the first shielding layer 3 are arc segments that fit with the outer conductor harnesses 1 on the corresponding side, and the two arc segments in the middle of the first shielding layer 3 fit each other; the second shielding layer 4 is tightly wrapped around the outer conductor harness 1 and the first shielding layer 3, and the cross section of the second shielding layer 4 is rhombus-shaped. The first shielding layer 3 and the second shielding layer 4 are both wrapped with metal braids.

[0025] The self-lubricating layer 5 is formed by wrapping a nylon tape, which can better isolate the second shielding layer 4 and the sheath layer 6, and can improve the cable's wear resistance, impact resistance, aging resistance, etc. The sheath layer 6 is formed by extruding a polyether polyurethane thermoplastic polymer material, so that the cable has excellent tensile strength, tear resistance, wear resistance, and low-temperature cracking resistance.

[0026] The production steps of the cable in this embodiment are: first prefabricate the outer conductor harness 1 and the inner conductor harness 2, then feed and adjust the spacing between the two inner conductor harnesses 2 (this spacing is larger than the spacing between the two inner conductor harnesses 2 after the cable is formed), and wrap the first shielding layer 3; then feed the outer conductor harness 1 and place the two outer conductor harnesses 1 on both sides of the first shielding layer 3 respectively; then wrap the second shielding layer 4, and release the position restriction of the two inner conductor harnesses 2. In the process of tightly wrapping the second shielding layer 4, the outer conductor harness 1 and the inner conductor harness 2 will be squeezed to gather inward. At the same time, the process of the two outer conductor harnesses 1 approaching each other will push the two middle layers of the first shielding layer 3 to fit each other. The first shielding layer 3 is in a taut state, which will drive the two inner conductor harnesses 2 to approach each other, until the outer conductor harness 1, the first shielding layer 3, and the inner conductor harness 2 are pressed together. Figure 1 As shown; then wrap the self-lubricating layer 5 around the outside of the second shielding layer 4; finally, extrude the sheath layer 6 on the outside of the self-lubricating layer 5.

[0027] Embodiment 2: This embodiment differs from Embodiment 1 in that:

[0028] In this embodiment, please refer to the attached Figure 2 The outer side of the outer conductor harness 1 is provided with a third shielding layer 7 which is arc-shaped and fits the outer conductor harness 1, and the two sides of the third shielding layer 7 are in contact with the first shielding layer 3, and the second shielding layer 4 is wrapped around the third shielding layer 7 and the outer side of the first shielding layer 3. The third shielding layer 7 is a metal braided mesh structure, which has a certain plastic effect. During the production process, while feeding the outer conductor harness 1, the third shielding layer 7 is directly attached and covered on the outer conductor harness 1. Since the outer side of the inner conductor harness 2 has two shielding layers, the first shielding layer 3 and the second shielding layer 4, and the outer side of the outer conductor harness 1 has only one shielding layer, the second shielding layer 4, the shielding effect of the outer side of the outer conductor harness 1 can be improved by setting the third shielding layer 7, which is conducive to achieving a uniform electromagnetic shielding effect around the cable.

[0029] The rest is the same as the first embodiment.

[0030] Embodiment 3: This embodiment differs from Embodiment 2 in that:

[0031] In this embodiment, please refer to the attached Figure 3 A reinforcing body 8 is provided in the gap between the two sides of the outer conductor harness 1 and the first shielding layer 3, and the reinforcing body 8 is in contact with the second shielding layer 4; the reinforcing body 8 is a steel wire rope, which can enhance the strength, toughness and tensile resistance of the cable. During the manufacturing process, the reinforcing body 8 is loaded while the outer conductor harness 1 is loaded, and the position of the reinforcing body 8 is adjusted.

[0032] The rest is the same as the second embodiment.

[0033] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A military anti-electromagnetic wire and cable, comprising a cable core, a second shielding layer (4) and a sheath layer (6) arranged in sequence from the inside to the outside; characterized in that: The cable core comprises two aligned outer conductor bundles (1) and two aligned inner conductor bundles (2), wherein the line between the two outer conductor bundles (1) is perpendicular to the line between the two inner conductor bundles (2), and the two outer conductor bundles (1) are arranged between the two inner conductor bundles (2); the outer sides of the two inner conductor bundles (2) are jointly coated with a first shielding layer (3), the two outer conductor bundles (1) are respectively arranged on both sides of the middle of the first shielding layer (3), the two layers in the middle of the first shielding layer (3) are respectively arc segments that are in contact with the outer conductor bundles (1) on the corresponding sides, and the two arc segments in the middle of the first shielding layer (3) are in contact with each other; the second shielding layer (4) is tightly wrapped around the outer sides of the outer conductor bundles (1) and the first shielding layer (3).

2. The military anti-electromagnetic wire and cable according to claim 1, characterized in that: The spacing between the two inner conductor bundles (2) is greater than the spacing between the two outer conductor bundles (1), and the cross-section of the second shielding layer (4) is rhombus-shaped.

3. The military anti-electromagnetic wire and cable according to claim 1, characterized in that: A self-lubricating layer (5) is wrapped around the outer side of the second shielding layer (4).

4. The military anti-electromagnetic wire and cable according to claim 1, characterized in that: A third shielding layer (7) which is arc-shaped and fits the outer conductor harness (1) is provided on the outer side of the outer conductor harness (1), and two sides of the third shielding layer (7) are in contact with the first shielding layer (3), and the second shielding layer (4) is wrapped around the outer side of the third shielding layer (7) and the first shielding layer (3).

5. A military anti-electromagnetic wire and cable according to any one of claims 1 to 4, characterized in that: A reinforcement body (8) is provided in the gap between the two sides of the outer conductor harness (1) and the first shielding layer (3), and the reinforcement body (8) is in contact with the second shielding layer (4).

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