Anti-extrusion communication cable sheath

Abstract

The utility model relates to the technical field of cables, in particular to an anti-extrusion communication cable sheath, which is characterized in that the periphery of a plurality of groups of signal lines is coated with a braid layer, the periphery of the braid layer is coated with an inner sheath, and the periphery of the inner sheath is coated with an outer sheath. Uniformly distributed cavities are formed between the inner sheath and the surface of the braid layer and between the inner sheath and the surface of the outer sheath, and the inner side and the outer side surface of the inner sheath elastically abut against the braid layer and the outer sheath, so that the inner sheath can generate elastic deformation. When the cable is extruded by external force, the inner sheath elastically deforms, so that external impact energy is absorbed, the cable core structure in the inner sheath is protected to be stable, and internal signal transmission is not affected; and when the external extrusion force is removed, the inner sheath elastically recovers to the original state, so that the cable has the anti-extrusion performance.

Description

Technical Field

[0001] The present application relates to the field of cable technology, and in particular to an anti-extrusion communication cable sheath. Background Art

[0002] In order to achieve a compact structure for current communication cables, the existing cable sheaths are all solid structures and are tightly stacked with the semi-finished inner sheaths without any buffer between the two. Cables laid over long distances are particularly susceptible to collision and extrusion during service. Once subjected to collision and extrusion, the internal structure of the cable will be permanently deformed, resulting in a sudden impedance change and affecting the quality of signal transmission. Utility Model Content

[0003] In order to solve the above technical problems, the present application provides an anti-extrusion communication cable sheath, comprising several groups of signal lines, a braided layer covered on the signal lines, an inner sheath covered on the braided layer, and an outer sheath covered on the inner sheath, a cavity being formed between the inner sheath and the braided layer, and between the inner sheath and the outer sheath, and the inner sheath elastically abuts against the braided layer and the outer sheath.

[0004] Preferably, the cross section of the inner sheath is in the shape of a plum blossom.

[0005] Preferably, the inner sheath is in the shape of a corrugated tube.

[0006] Preferably, the inner sheath is made of a highly elastic resin material.

[0007] Preferably, the signal line is cabled using one or more communication lines.

[0008] Preferably, each group of signal lines is one of a coaxial line, a high-speed line, and an optoelectronic composite line.

[0009] As can be seen from the above, the following beneficial effects can be achieved by applying the present application: by coating the outer periphery of several groups of signal wires with a braided layer, coating the outer periphery of the braided layer with an inner sheath, and coating the outer periphery of the inner sheath with an outer sheath, uniformly distributed cavities are formed between the inner sheath and the surface of the braided layer, and between the inner sheath and the surface of the outer sheath, and the inner and outer sides of the inner sheath elastically abut against the braided layer and the outer sheath, so that the inner sheath can undergo elastic deformation. When the cable is squeezed by external force, the inner sheath undergoes elastic deformation, thereby absorbing external impact energy, protecting the wire core structure inside the inner sheath from being affected, and the internal signal transmission is not affected; when the external squeezing force is removed, the inner sheath elastically returns to its original state, so that the cable has anti-extrusion performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] To more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for describing the embodiments of the present application or the prior art. Obviously, the drawings described below are only part of the embodiments of the present application. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0011] Figure 1 This is a cross-sectional view of an anti-crushing communication cable sheath according to one embodiment of the present application;

[0012] Figure 2 This is a schematic diagram of an anti-crushing communication cable sheath according to one embodiment of the present application. DETAILED DESCRIPTION

[0013] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0014] Example

[0015] In order to solve the above technical problems, this embodiment provides an anti-extrusion communication cable sheath, such as Figure 1 As shown, the cable comprises several groups of signal wires 10, each of which is covered with a braided layer 20, which is then covered with an inner sheath 30, which is then covered with an outer sheath 40. Uniformly distributed cavities are formed between the inner sheath 30 and the surface of the braided layer 20, and between the inner sheath 30 and the surface of the outer sheath 40. The inner and outer sides of the inner sheath 30 elastically abut against the braided layer 20 and the outer sheath 40, allowing the inner sheath 30 to elastically deform. When the cable is squeezed by an external force, the inner sheath 30 elastically deforms, absorbing the external impact energy and protecting the internal core structure of the inner sheath 30. When the external squeezing force is removed, the inner sheath 30 elastically returns to its original shape, making the cable resistant to extrusion.

[0016] Specifically, in one embodiment, the cross section of the inner sheath 30 is in the shape of a plum blossom, the inner sheath 30 is covered on the braided layer 20, the outer sheath 40 is covered on the inner sheath 30, and the inner and outer sides of the inner sheath 30 form a concave-convex structure, so that the inner sheath 30 forms a uniformly distributed cavity between the surface of the braided layer 20 and the surface of the outer sheath 40, so that the inner sheath 30 can undergo elastic deformation when subjected to force. In other embodiments, such as Figure 2As shown, the inner sheath 30 may also be in the shape of a bellows.

[0017] Furthermore, the inner jacket 30 is made of a resin with high elastic recovery, including but not limited to polyurethane, nylon, silicone, TPE, etc. Both the inner jacket 30 and the outer jacket 40 are extruded using a tube-type extrusion process. Cooling and molding processes for the inner jacket include air cooling, water cooling, and compression molding. For example, after exiting the extrusion die, the inner jacket 30 is immediately cooled in a cooling water tank to stabilize its shape, maintaining elastic properties.

[0018] Furthermore, the signal lines 10 are cabled using one or more communication lines. Each group of signal lines 10 includes, but is not limited to, coaxial lines, high-speed lines, and optoelectronic composite lines. For example, in one embodiment, when parallel high-speed lines are used, the high-speed lines can include two twisted core wires and a wrapping layer covering the core wires. The wrapping layer can be formed by wrapping a shielding material to provide a shielding effect and ensure stable signal transmission of the internal signal lines 10. The core wire includes a conductor and an insulating layer covering the conductor.

[0019] In summary, the present application solution comprises a braided layer wrapped around the periphery of several groups of signal wires, an inner sheath wrapped around the periphery of the braided layer, and an outer sheath wrapped around the periphery of the inner sheath. Uniformly distributed cavities are formed between the inner sheath and the surface of the braided layer, and between the inner sheath and the surface of the outer sheath. The inner and outer sides of the inner sheath elastically abut against the braided layer and the outer sheath, allowing the inner sheath to undergo elastic deformation. When the cable is squeezed by an external force, the inner sheath undergoes elastic deformation, thereby absorbing the external impact energy, protecting the wire core structure inside the inner sheath, and ensuring that the internal signal transmission is not affected. When the external squeezing force is removed, the inner sheath elastically returns to its original state, making the cable resistant to extrusion.

[0020] The above-described embodiments do not constitute a limitation on the scope of protection of this technical solution. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the above-described embodiments shall be included in the scope of protection of this technical solution.

Claims

1. An anti-extrusion communication cable sheath, characterized by: The invention comprises a plurality of signal lines (10), a braided layer (20) covering the signal lines (10), an inner sheath (30) covering the braided layer (20), and an outer sheath (40) covering the inner sheath (30), wherein a cavity is formed between the inner sheath (30) and the braided layer (20), and between the inner sheath (30) and the outer sheath (40), and the inner sheath (30) elastically abuts against the braided layer (20) and the outer sheath (40).

2. The anti-extrusion communication cable sheath according to claim 1, characterized in that: The cross section of the inner sheath (30) is in the shape of a plum blossom.

3. The anti-extrusion communication cable sheath according to claim 1, characterized in that: The inner sheath (30) is in the shape of a corrugated tube.

4. The anti-extrusion communication cable sheath according to claim 2 or 3, characterized in that: The inner sheath (30) is made of a high-elasticity resin material.

5. The anti-extrusion communication cable sheath according to claim 1, characterized in that: The signal line (10) is cabled using one or more communication lines.

6. The anti-extrusion communication cable sheath according to claim 1, characterized in that: The signal line (10) is one of a coaxial line, a high-speed line, and an optoelectronic composite line.

Images