Composite shielding type power cable

Abstract

The utility model discloses a composite shielding type power cable, which comprises a wire core, a shielding layer, a recovery assembly and an outer sheath, the shielding layer is arranged outside the wire core, the recovery assembly is arranged on the outer wall of the shielding layer and is used for extruding and rebounding the cable, and the outer sheath is arranged outside the recovery assembly and is used for extruding and rebounding the cable. The outer wall of the wire core is sleeved with an inner sheath, the shielding layer is sleeved outside the inner sheath, and a filling material used for filling a gap in the cable is arranged between the inner sheath and the shielding layer. The design of the shielding layer, the recovery assembly and the outer sheath is utilized, when external force extrudes the outer sheath, the springback rod is extruded, so that the springback rod deforms, generates restoring force and counteracts the external force, extrusion damage to a wire core is slowed down, and meanwhile, in order to keep the restoring force of the springback rod, the limiting partition plate is arranged, so that the service life of the springback rod is prolonged, and the service life of the springback rod is prolonged. And the position of the springback rod is limited, so that the displacement of the springback rod during extrusion deformation is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field, especially in composite shielding type power cable. BACKGROUND

[0002] The shielding type cable is the cable with the shielding layer, prevents the entry and the interference of outside signal, therefore is often used in transmission line, communication circuit etc.

[0003] The shielding type cable usually is composed of copper core, shielding layer and outer sheath etc., in the use process of the electrified circuit, the cable will be partly laid on the ground, therefore in the process of walking of the staff, will step on the cable, thereby makes the cable appear deformation, when long time repeatedly steps on, will lead to the deformation of the copper core inside, influences the transmission of data. UTILITY MODEL CONTENT

[0004] The utility model discloses a composite shielding type power cable to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: composite shielding type power cable, including:

[0006] Wire core;

[0007] Shielding layer, the shielding layer sets up in the outside of wire core;

[0008] Recovery component, the recovery component sets up in the outer wall of shielding layer, and the recovery component is used for the extrusion rebound of cable;

[0009] Outer sheath, the outer sheath sets up in the outside of recovery component.

[0010] Preferably, the outer wall of the wire core is sleeved with an inner sheath, and the shielding layer is sleeved outside the inner sheath.

[0011] Preferably, a filler for filling the internal gap of the cable is arranged between the inner sheath and the shielding layer.

[0012] Preferably, the outer wall of the filler is sleeved with a flame-retardant layer for flame retardation.

[0013] Preferably, the recovery component comprises:

[0014] Outer layer, the outer layer is sleeved in the inside of outer sheath;

[0015] Inner layer, the inner layer is sleeved in the outer wall of flame-retardant layer;

[0016] Rebound piece, the rebound piece is arranged between the outer layer and the inner layer.

[0017] Preferably, the rebound piece comprises:

[0018] A limiting partition plate is arranged between the outer layer and the inner layer.

[0019] A rebounding rod is arranged outside the limiting partition plate.

[0020] Preferably, the limiting partition plate is in a wave shape in cross section, and the rebounding rod is arranged at a concave part of the limiting partition plate.

[0021] The technical effects and advantages of the utility model are as follows:

[0022] The utility model discloses a shielding layer, the design of recovery assembly and outer sheath, when extruding the outer sheath by external force, will extrude the rebounding rod, thereby making the rebounding rod appear deformation, produces the restoring force, and external force is mutually offset, thereby slow down extruding damage to the core, and in order to keep the restoring force of rebounding rod, the setting of limiting partition plate, limit the position of rebounding rod, thereby avoiding the displacement when extruding deformation of rebounding rod. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the cross section structure schematic diagram of the utility model.

[0024] In the drawing: 1, core; 2, inner sheath; 3, shielding layer; 4, filler; 5, flame-retardant layer; 6, recovery assembly; 61, outer layer; 62, inner layer; 63, limiting partition plate; 64, rebounding rod; 7, outer sheath. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0026] The utility model provides a composite shielding type power cable as Figure 1 As shown in the drawing, it comprises:

[0027] Core 1;

[0028] Shielding layer 3 is arranged outside the core 1;

[0029] Recovery assembly 6 is arranged on the outer wall of the shielding layer 3, and the recovery assembly 6 is used for extruding rebound of the cable.

[0030] Outer sheath 7 is arranged outside the recovery assembly 6.

[0031] The outer wall of the core 1 is sleeved with the inner sheath 2, and the shielding layer 3 is sleeved outside the inner sheath 2.

[0032] A filler 4 for the inner space of the cable is arranged between the inner sheath 2 and the shield 3.

[0033] The outer wall of the filler 4 is sheathed with a flame-retardant layer 5 for flame retardation.

[0034] Further, the wire core 1 is an oxygen-free copper core conductor, the wire core 1 is externally sleeved with the inner sheath 2, and the shielding layer 3 is a copper mesh shielding layer. The copper mesh shielding layer has various advantages, mainly in electromagnetic interference (EMI) protection, signal integrity, safety, and the like. The main benefits of the copper mesh shielding layer are as follows: 1. effectively preventing electromagnetic interference (EMI) and shielding electromagnetic waves: the copper mesh can effectively absorb and reflect electromagnetic waves, reducing the influence of external electromagnetic interference on the internal circuit, ensuring that the device is not disturbed by external signals when working; reducing radiation: the copper mesh shielding layer can effectively reduce the electromagnetic radiation of the device itself, avoiding interference with surrounding electronic devices or the environment; 2. improving signal integrity; protecting signal transmission: in electronic devices, the copper mesh shielding layer can protect sensitive signal lines from external interference during signal transmission, thereby improving signal stability and accuracy and reducing crosstalk: in the case of dense wiring of multiple signal lines, the copper mesh shielding layer can reduce the mutual interference (crosstalk) between signals, ensuring independent transmission of each signal; 3. enhancing the anti-interference ability of the device; suitable for complex environments: in places with complex electromagnetic environments (such as industrial equipment, communication equipment, or medical equipment), the copper mesh shielding layer can significantly improve the anti-interference ability of the device, ensuring stable operation of the device; 4. improving the safety of the device; preventing external attacks: the copper mesh shielding layer can prevent external electromagnetic waves from illegally invading or interfering with the device, especially in communication equipment or military equipment, which can enhance the safety of the device and prevent information leakage: in some devices that require data security protection, the copper mesh shielding layer can prevent information leakage caused by electromagnetic wave radiation, ensuring data security; 5. good heat conduction performance and excellent heat dissipation performance: copper is an excellent heat-conducting material, and the copper mesh shielding layer can assist in heat dissipation of the device to prevent damage caused by overheating; 6. simple structure, easy to process; high flexibility: the copper mesh structure is light and flexible, easy to process and install, suitable for devices of various shapes and sizes, and relatively low cost: although the copper material has a high cost, the processing and installation process is relatively simple, and the comprehensive cost is controllable; 7. strong environmental adaptability; corrosion resistant: the copper mesh is usually surface treated (such as tin plating, silver plating, etc.), has certain corrosion resistance, and is suitable for use in different environments; good temperature resistance: the copper mesh can maintain stable performance within a wide temperature range, suitable for various working environments; therefore, the copper mesh shielding layer plays a very important role in electronic devices, can effectively prevent electromagnetic interference, improve signal integrity, enhance device safety and anti-interference ability, and has good heat conduction and environmental adaptability, and is therefore widely used in various electronic devices. The filler 4 is a plastic filler, the flame-retardant layer 5 is made of a flame-retardant material, the inner sheath 2 and the outer sheath 7 are made of the same material, i.e., polyvinyl chloride sheath, and the recovery assembly 6 is arranged between the flame-retardant layer 5 and the outer sheath 7.

[0035] The recovery assembly 6 comprises:

[0036] An outer layer 61 is sleeved on the inside of the outer sheath 7;

[0037] An inner layer 62 is sleeved on the outer wall of the flame-retardant layer 5;

[0038] A resilient member is arranged between the outer layer 61 and the inner layer 62.

[0039] The resilient member includes:

[0040] A limiting partition plate 63 is arranged between the outer layer 61 and the inner layer 62;

[0041] A resilient rod 64 is arranged outside the limiting partition plate 63.

[0042] The limiting partition plate 63 is in a wavy shape, and the resilient rod 64 is arranged in the concave part of the limiting partition plate 63.

[0043] Further, the outer layer 61, the inner layer 62, the limiting partition plate 63 and the resilient rod 64 are all made of silicone rubber, which is a high-molecular elastic material with a main chain of siloxane bonds. Due to its unique chemical structure and properties, it has been widely used in many fields. The following are the main benefits and advantages of silicone rubber: 1. Excellent temperature resistance; high temperature resistance: silicone rubber can be used for a long time at a temperature range of -60℃ to 200℃, and can withstand high temperatures above 300℃ for a short time; low temperature resistance: it can maintain good elasticity at very low temperatures and will not become brittle; 2. Good weather resistance; silicone rubber has strong resistance to environmental factors such as ultraviolet light, ozone and rainwater, and is not prone to aging; 3. Excellent electrical insulation performance; silicone rubber has high resistivity and dielectric strength, and is suitable for electrical insulation materials; 4. Chemical stability; silicone rubber has good resistance to most chemicals (such as acids, bases and salts) and is not easily corroded; 5. Softness and elasticity; silicone rubber has excellent elasticity and softness and can quickly recover to its original state after being stressed; 6. Easy to process; silicone rubber can be processed by molding, extrusion, injection molding and other methods, and is suitable for the manufacture of complex shapes, so it is convenient to process the limiting partition plate 63 into a wavy shape, and the resilient rod 64 is arranged in multiple, with each of the multiple resilient rods 64 arranged in a trough of the limiting partition plate 63. The parts of the limiting partition plate 63 in contact with the outer layer 61 and the inner layer 62 are bonded and fixed. When external force is pressed, the resilient rod 64 and the limiting partition plate 63 will be deformed by the pressing force. After being pressed, the restoring force of the resilient rod 64 interacts with the pressing force, reducing the damage of the pressing force to the wire core 1. At the same time, because the cross section of the resilient rod 64 is circular, it avoids the situation that the resilient rod 64 rolls randomly after being pressed, causing insufficient restoring force. The limiting partition plate 63 limits the position of the resilient rod 64, so as to better resist the extrusion of external force on the cable.

[0044] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A composite shielded power cable, characterized in that Comprise: A wire core (1); A shielding layer (3) arranged outside the wire core (1); A recovery assembly (6) arranged outside the shielding layer (3), the recovery assembly (6) is used for extrusion rebound of the cable; An outer sheath (7) arranged outside the recovery assembly (6).

2. The composite shielded power cable according to claim 1, characterized in that, The outer wall of the wire core (1) is sleeved with an inner sheath (2), and the shielding layer (3) is sleeved outside the inner sheath (2).

3. The composite shielded power cable according to claim 2, characterized in that, The inner sheath (2) and the shielding layer (3) are provided with a filler (4) for filling the internal gap of the cable.

4. The composite shielded power cable according to claim 3, characterized in that, The outer wall of the filler (4) is sleeved with a flame-retardant layer (5) for flame retardation.

5. The composite shielded power cable according to claim 4, characterized in that, The recovery assembly (6) comprises: An outer layer (61) sleeved inside the outer sheath (7); An inner layer (62) sleeved outside the flame-retardant layer (5); A rebounding piece arranged between the outer layer (61) and the inner layer (62).

6. The composite shielded power cable according to claim 5, characterized in that, The rebounding piece comprises: A limiting partition plate (63) arranged between the outer layer (61) and the inner layer (62); A rebounding rod (64) arranged outside the limiting partition plate (63).

7. The composite shielded power cable according to claim 6, characterized in that, The cross section of the limiting partition plate (63) is wave-shaped, and the rebounding rod (64) is arranged at the recessed part of the limiting partition plate (63).

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