Reinforced shielding control cable

Abstract

The utility model relates to the technical field of shielding cables, and provides a reinforced shielding control cable, which comprises a plurality of groups of insulating wire cores, and the plurality of insulating wire cores are annularly arranged around the insulating wire cores; the waterproof layer is arranged on the outer side of the insulating wire core layer; the metal foil is spirally wound on the outer side of the waterproof layer; the width of the metal foil is greater than half of the screw pitch of the metal foil; and the protective layer is arranged outside the metal foil. According to the technical scheme, the problem that the metal foil shielding layer is easy to damage due to cable bending in the prior art is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shielded cable, specifically, and relates to a reinforced shielded control cable. BACKGROUND

[0002] In the field of modern communication and power transmission, the performance of cables plays a crucial role in the quality and stability of signal transmission and the reliability of power supply. Shielded cables, as a special type of cable, are designed to address issues such as electromagnetic interference and signal leakage. When traditional cables are used in complex electromagnetic environments, they are often disturbed by external electromagnetic signals, leading to signal transmission distortion, increased error rate, and serious impact on communication quality. At the same time, the signals transmitted inside the cable can also radiate to the outside world, causing information leakage and security risks.

[0003] The shielded cables in the prior art are mainly divided into two categories: one is a cable with a metal mesh shielding layer, and the other is a cable with a metal foil shielding layer. In actual use, the metal mesh shielding layer has good flexibility and can be repeatedly bent, while the metal foil shielding layer has the characteristics of small volume and light weight, but is easily damaged. Although the prior art has combined the two shielding layers together, the metal foil shielding layer inside the cable is still prone to damage due to bending. SUMMARY

[0004] The utility model provides a kind of reinforced shielded control cable, solve the problem that metal foil shielding layer in relevant technology is easily damaged due to cable bending.

[0005] The technical solution of the utility model is as follows:

[0006] A reinforced shielded control cable comprises:

[0007] An intermediate filler;

[0008] A plurality of insulated cores are arranged in a ring around the insulated core layer;

[0009] A water-blocking layer is provided outside the insulated core layer;

[0010] A metal foil is spirally wound outside the water-blocking layer, and the width of the metal foil is greater than half the pitch of the metal foil;

[0011] A protective layer is provided outside the metal foil.

[0012] As a further technical solution, it further comprises:

[0013] A first metal mesh shielding layer is provided between the protective layer and the metal foil.

[0014] As a further technical solution, it further comprises:

[0015] Supporting fillers, having a plurality of, along the intermediate filler circumferential array, the supporting filler is located between two adjacent said insulated wire core;

[0016] Second metal mesh shielding layer, having a plurality of, a plurality of said second metal mesh shielding layer is arranged on the outside of the intermediate filler and the outside of the supporting filler respectively, the second metal mesh shielding layer is used for shielding the electrical signal between the insulated wire core.

[0017] As a further technical solution, a plurality of said insulated wire core is spirally wound on the intermediate filler.

[0018] As a further technical solution, the cross section of the supporting filler is circular, and the gap between the supporting filler and the insulated wire core is filled with a filling layer.

[0019] As a further technical solution, the width of the metal foil is 5cm~10cm.

[0020] As a further technical solution, the water blocking layer is wrapped by an insulating water blocking tape.

[0021] The working principle and beneficial effects of the utility model are as follows:

[0022] In the utility model, the metal foil adopts the spiral winding mode, which can reduce the stretching and extrusion force compared with the mode of directly coating on the water blocking layer when the cable is bent, thereby reducing the probability of damage of the metal foil due to the cable bending. Since the width of the metal foil is greater than half of the pitch, the metal foil can realize the effect of fully coating the water blocking layer. When the cable is bent, the overlapping part between the metal foils can be stretched and extruded, reducing the stretching and deformation of the metal foil, thereby reducing the possibility of damage of the metal foil shielding layer due to bending.

[0023] Through the spiral winding metal foil, the problem of easy damage of the metal foil shielding layer due to cable bending is successfully solved, and the durability and reliability of the cable are significantly improved. Through the full coating of the metal foil, the shielding performance of the cable is greatly enhanced, effectively reducing electromagnetic interference and signal leakage, and effectively ensuring the quality and stability of signal transmission. The service life of the cable is significantly prolonged, and the maintenance cost and replacement frequency are greatly reduced. The stability and safety of the cable working in complex electromagnetic environment are effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above characteristics, technical features, advantages and implementation modes of the utility model will be further described in the following clear and understandable manner combined with the preferred embodiments and the drawings.

[0025] Fig. 1It is a cross section schematic view of the utility model;

[0026] Fig. 2 It is a cross section schematic view of the utility model with supporting elastic strips;

[0027] Fig. 3 It is a structure schematic view of the utility model.

[0028] In the drawing: 100, intermediate filler, 200, insulated wire core, 300, water barrier layer, 400, metal foil, 500, protective layer, 600, first metal mesh shielding layer, 700, supporting filler, 800, second metal mesh shielding layer. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, specific implementation manners of the utility model will be described below with reference to the drawings. Obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, without incurring creative labor, other drawings can also be obtained according to these drawings, and other implementation manners.

[0030] In order to make the drawing simple, only the part related to the utility model is shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the components with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0031] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] REFERENCE Figs. 1-3The utility model provides a kind of reinforced shielding control cable, including insulated wire core 200, insulated wire core 200 has several groups, several insulated wire core 200 is annularly arranged at the periphery of insulated wire core 200;Water-blocking layer 300 is arranged at the outer side of insulated wire core 200 layer;Metal foil 400 is spirally wound in the outer side of water-blocking layer 300, and the width of metal foil 400 is greater than half of the pitch of metal foil 400;Protective layer 500 is arranged in the outer side of metal foil 400.

[0034] In the embodiment, a kind of reinforced shielding control cable is composed of several groups of insulated wire core 200, these insulated wire core 200 is annularly distributed in its periphery. Water-blocking layer 300 is arranged at the outer side of insulated wire core 200 layer, for preventing moisture from entering. Metal foil 400 is spirally wound in the outer side of water-blocking layer 300, and the width of metal foil 400 is greater than half of its pitch. Protective layer 500 is also arranged in the outer side of metal foil 400.

[0035] In actual use, metal foil 400 adopts the mode of spiral winding, which can reduce the tensile and extrusion force compared to the mode of directly coating on water-blocking layer 300 when the cable is bent, thereby reducing the probability of damage of metal foil 400 due to cable bending. Since the width of metal foil 400 is greater than half of the pitch, metal foil 400 can achieve the effect of fully covering water-blocking layer 300. When the cable is bent, the overlapping parts between metal foil 400 can be stretched and extruded, reducing the stretching and deformation of metal foil 400, thereby reducing the possibility of damage of the shielding layer of metal foil 400 due to bending.

[0036] Through the spiral winding of metal foil 400, the problem of easy damage of the shielding layer of metal foil 400 due to cable bending is successfully solved, and the durability and reliability of the cable are significantly improved. Through the full coverage of metal foil 400, the shielding performance of the cable is greatly enhanced, effectively reducing electromagnetic interference and signal leakage, and effectively ensuring the quality and stability of signal transmission. The service life of the cable is significantly prolonged, and the maintenance cost and replacement frequency are greatly reduced. The stability and safety of the cable in complex electromagnetic environment are effectively improved.

[0037] In a specific implementation, a partial supporting elastic strip can be added between the water-blocking layer 300 and the protective layer 500, the surface of the supporting elastic strip is wrapped with a sealing tape, and the protective layer 500 is formed by extrusion on the surface of the sealing tape. The metal foil 400 is between the supporting elastic strip and the water-blocking layer 300, so that the overlapping part of the metal foil 400 can reduce the tensile and extrusion force by sliding. Another is to directly extrude the protective layer 500 on the surface of the metal foil 400, and the side of the overlapping part of the metal foil 400 close to the water-blocking layer 300 can still overcome part of the tensile and extrusion force by sliding. In actual use, after the part of the metal foil 400 adhered to the protective layer 500 is damaged, the metal foil 400 close to the water-blocking layer 300 in the overlapping part can still play a role, thereby providing the service life of the metal foil 400 isolation layer.

[0038] Further, a first metal mesh shielding layer 600 is further included, and the first metal mesh shielding layer 600 is arranged between the protective layer 500 and the metal foil 400.

[0039] In this embodiment, on the basis of the original reinforced shielding control cable, the first metal mesh shielding layer 600 is arranged between the protective layer 500 and the metal foil 400. When manufacturing, a plurality of groups of the insulated wire core 200 are arranged in a ring shape around the periphery to form the insulated wire core 200 layer, then the water-blocking layer 300 is arranged outside the insulated wire core 200 layer, then the metal foil 400 is spirally arranged outside the water-blocking layer 300, and it is necessary to ensure that the width of the metal foil 400 is greater than half of the pitch of the metal foil 400, so that the water-blocking layer 300 is fully covered, then the first metal mesh shielding layer 600 is closely arranged outside the metal foil 400, and finally the protective layer 500 is sleeved. The first metal mesh shielding layer 600 cooperates with the metal foil 400 to form a stronger shielding system, which can more effectively block external electromagnetic interference and better prevent internal signals of the cable from radiating outward, thereby greatly improving the anti-interference ability of the cable in a complex electromagnetic environment and ensuring the stability and reliability of signal transmission.

[0040] The first metal mesh shielding layer 600 supports and protects the metal foil 400, and when the protective layer 500 of the metal foil 400 is damaged, the first metal mesh shielding layer 600 can continue to play a shielding role, thereby prolonging the service life of the whole cable. When the cable needs to be bent at a large angle during use, the metal mesh shielding layer formed by the metal braid net will have a large aperture due to bending, and at this time, the metal foil 400 shielding layer can play a shielding role, thereby further improving the stability of the shielding cable.

[0041] Further, the support filler 700 is arranged between the adjacent two insulated wire cores 200 along the circumference of the intermediate filler 100; and the second metal mesh shielding layer 800 is arranged outside the intermediate filler 100 and the support filler 700, respectively, and is used to shield the electrical signals between the insulated wire cores 200.

[0042] In the reinforced shielding control cable, the support fillers 700 are arranged between the adjacent two insulated wire cores 200 along the circumference of the intermediate filler 100. Meanwhile, the second metal mesh shielding layers 800 are arranged outside the intermediate filler 100 and the support filler 700, respectively. In the cable manufacturing process, the second metal mesh shielding layers 800 are first sleeved on the intermediate filler 100 and the support filler 700, and then the support filler 700 and the insulated wire cores 200 are twisted together by using the cabling machine.

[0043] The second metal mesh shielding layer 800 avoids the electrical signal interference between the insulated wire cores 200, and further improves the stability and reliability of the shielding effect.

[0044] Further, the insulated wire cores 200 are spirally arranged on the intermediate filler 100.

[0045] In the structure of the reinforced shielding control cable, the insulated wire cores 200 are spirally arranged on the intermediate filler 100. The insulated wire cores 200 are spirally arranged on the intermediate filler 100 by using the cabling machine, which increases the flexibility of the cable and makes it less likely to be damaged when bending and stretching. When the twisted insulated wire cores 200 bear the tension, the stress is dispersed between the multiple wires. Each insulated wire core 200 shares a part of the tension, thereby improving the overall tensile strength of the cable.

[0046] In the actual production process, the insulated wire cores 200 and the support fillers 700 can be twisted on the intermediate filler 100 by using the cabling machine synchronously.

[0047] Further, the cross section of the support filler 700 is circular, and the gap between the support filler 700 and the insulated wire core 200 is filled with a filler layer.

[0048] In the embodiment, the support filler 700 with a circular cross-section can evenly disperse stress when the cable is subjected to external pressure. When the cable is pressed, the circular shape can ensure that the pressure is evenly transmitted in all directions to the filler layer and the insulated core 200. For example, during cable laying, if it is pressed by a heavy object or is pressed by other cables in the pipe, the circular support filler 700 can avoid excessive local pressure to damage the insulated core 200. The circle is the geometric shape with the largest area for a given circumference. This shape can occupy the cable internal space to the greatest extent to provide stable support for the insulated core 200. Compared with other shapes, the circular support filler 700 can better fill the space inside the cable, making the cable structure more compact. The filler layer can also improve the waterproof performance of the cable, further improving the service life of the cable.

[0049] In the manufacturing process, the shape and position of the support filler 700 are first determined, and then the filler layer is injected or placed at the gap between the support filler 700 and the insulated core 200. The filler layer can be made of silicone sealant, polyvinyl chloride mastic, butyl rubber, etc.

[0050] Further, the width of the metal foil 400 is 5cm-10cm.

[0051] In the embodiment, the width of the metal foil 400 is controlled to be 5cm-10cm, which can control the cost of the cable within a certain range, and can increase the adaptability of the metal foil 400 by increasing the number of spiral turns of the metal foil 400, thereby improving the service life of the metal foil 400.

[0052] Further, the water-blocking layer 300 is wrapped by an insulating water-blocking tape.

[0053] In the embodiment, in the reinforced shielding control cable, the water-blocking layer 300 is wrapped by an insulating water-blocking tape. The insulating water-blocking tape is used to wrap the water-blocking layer 300, which has a relatively simple process, is easy to implement and has a low cost. The insulating water-blocking tape can effectively prevent water penetration, ensure the dryness of the cable interior, and improve the electrical performance and service life of the cable.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalent, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A reinforced shielded control cable, characterized in that, include: Intermediate filler (100); The insulated wire core (200) has several groups, and the insulated wire cores (200) are arranged in a ring around the insulated wire core (200); A water-blocking layer (300) is disposed on the outside of the insulating core (200) layer; A metal foil (400) is spirally wound around the outside of the water-blocking layer (300), and the width of the metal foil (400) is greater than half of the pitch of the metal foil (400); A protective layer (500) is disposed on the outside of the metal foil (400).

2. The reinforced shielded control cable according to claim 1, characterized in that, Also includes: A first metal mesh shielding layer (600) is disposed between the protective layer (500) and the metal foil (400).

3. The reinforced shielded control cable according to claim 1, characterized in that, Also includes: A plurality of support fillers (700) are arranged in a circumferential array along the intermediate filler (100), the support fillers (700) being located between two adjacent insulated wire cores (200); The second metal mesh shielding layer (800) has a plurality of them. The plurality of second metal mesh shielding layers (800) are respectively disposed on the outside of the intermediate filler (100) and the outside of the support filler (700). The second metal mesh shielding layer (800) is used to shield the electrical signals between the insulated wire cores (200).

4. The reinforced shielded control cable according to claim 1, characterized in that, Several of the insulated wire cores (200) are spirally wound on the intermediate filler (100).

5. A reinforced shielded control cable according to claim 3, characterized in that, The cross-section of the support filler (700) is circular, and the gap between the support filler (700) and the insulated wire core (200) is filled with a filler layer.

6. A reinforced shielded control cable according to claim 1, characterized in that, The width of the metal foil (400) is 5cm to 10cm.

7. The reinforced shielded control cable according to claim 1, characterized in that, The water-blocking layer (300) is formed by wrapping an insulating water-blocking tape.

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