CN206619416U - Multi-core shielded wire - Google Patents

Abstract

The utility model discloses a multi-core shielded wire, which comprises a core wire formed by twisting seven strands of wires, and a tinned copper isolation layer and a PVC insulation layer which are sequentially coated on the core wire, wherein the wires comprise a conductor formed by twisting a plurality of copper wires and a PVC insulation layer coated on the conductor, and the outer surface of each copper wire is provided with a tinned layer; the utility model has the advantages of ingenious and reasonable structural design, the tin-coated copper isolation layer with good shielding effect is formed by sequentially winding the core wire on the outer surface along the circumferential direction, so that the shielding effect is better than that of a common aluminum foil layer, the radiation resistance and the anti-interference capability are effectively improved, the external interference is reduced, and the quality of audio and video signal transmission is effectively ensured; meanwhile, the outer surface of the copper wire in the conductor is provided with a tin coating, so that a double shielding effect is formed, and the shielding effect is good; meanwhile, the PVC insulating layer can effectively protect the core wire, is not easy to harden, is not easy to be damaged and abraded by external force, and has higher wear resistance, ageing resistance and long service life.

Description

Multi-core shielded wire

technical field

The utility model relates to the technical field of electric wires and cables, in particular to a multi-core shielded electric wire.

Background technique

Although the wire and cable industry is only a supporting industry, it accounts for 1/4 of the output value of China's electrical industry. It has a wide variety of products and a wide range of applications, involving industries such as electric power, construction, communications, and manufacturing, and is closely related to various sectors of the national economy. Wires and cables are also known as the "arteries" and "nerves" of the national economy. They are indispensable basic equipment for transmitting electric energy, transmitting information, manufacturing various motors, instruments, and meters, and realizing electromagnetic energy conversion. necessary basic products in a modernized society.

Existing commonly used audio and video system connecting wires usually consist of a conductive copper core and an insulating layer. As we all know, wires with this structure will generate electromagnetic wave radiation when they are energized, and at the same time, they will be interfered by electromagnetic waves from other electronic components, so that the normal operation of electrical appliances is often affected by electromagnetic interference during use. That is, its anti-interference is poor, it is easily affected by the outside world, and it is difficult to guarantee the quality requirements of audio and video signal transmission.

Utility model content

In view of the above deficiencies, the purpose of this utility model is to provide a multi-core shielded wire with ingenious and reasonable structural design, shielding effect, improved anti-interference ability, and effectively guarantee the quality of audio and video signal transmission.

In order to achieve the above purpose, the technical solution provided by the utility model is: a multi-core shielded wire, which includes a core wire twisted by seven wires and a tinned copper isolation layer coated on the core wire in turn and the PVC insulation layer, the tinned copper isolation layer is formed by winding the tinned copper wire on the outer surface of the core wire along the circumferential direction of the core wire; the thickness of the tinned copper isolation layer is 0.10-0.14mm; the wire It includes a plurality of copper wires twisted to form a conductor and a PVC insulation layer coated on the conductor. The outer surface of the copper wire is provided with a tin-plated layer, and a tin-plated copper insulation layer is provided between the PVC insulation layer. Ground wire.

As an improvement of the utility model, the thickness of the PVC insulating layer is 3.9-4.1 mm.

As an improvement of the utility model, the wire diameter of the grounding steel wire is 0.2-0.5 mm.

The beneficial effects of the utility model are: the utility model has an ingenious and reasonable structural design, and the tinned copper isolation layer with good shielding effect is formed by sequentially winding the outer surface of the core wire along its circumferential direction, which is more effective than the ordinary aluminum foil layer. It has a shielding effect, effectively improves the anti-radiation and anti-interference ability, reduces external interference, and effectively guarantees the quality of audio and video signal transmission; at the same time, the outer surface of the copper wire in the conductor is provided with a tin-plated layer to form a double shielding effect, and the shielding effect is good ;At the same time, the core wire can be effectively protected by the PVC insulation layer, which is not easy to harden, is not easy to be damaged and worn by external forces, has high wear resistance and aging resistance, and has a long service life. While shielding effect and enhanced tensile strength, it is also convenient to quickly tear off the PVC insulation layer without tools to expose the core wire, which is convenient for wiring and brings convenience to use.

Below in conjunction with accompanying drawing and embodiment, the utility model is further described.

Description of drawings

Fig. 1 is a structural representation of the utility model.

detailed description

Referring to Fig. 1, a multi-core shielded electric wire provided by this embodiment includes a core wire formed by twisting seven strands of wires 3 and a tinned copper isolation layer 1 and a PVC insulation layer coated on the core wire in sequence 2. The tinned copper isolation layer 1 is formed by winding the tinned copper wire on the outer surface of the core wire in sequence along the circumferential direction of the core wire; the thickness of the tinned copper isolation layer 1 is 0.10-0.14mm; the wire 3 It includes a plurality of copper wires twisted to form a conductor and a PVC insulating layer 2 coated on the conductor. The outer surface of the copper wire is provided with a tin-plated layer. The tinned copper insulating layer 1 and the PVC insulating layer 2 A grounding steel wire 4 is provided between them. While strengthening the tensile strength, it is also convenient to quickly tear off the PVC insulation layer 2 without tools to expose the core wires, which is convenient for wiring and brings convenience to use. When wiring, the shielding effect can be further improved by grounding. Preferably, a plurality of ring-shaped protrusions are also provided on the outer surface of the PVC insulating layer 2 to effectively enhance friction, reduce shaking, and better ensure the quality of audio and video signal transmission; at the same time, the thickness is increased to improve wear resistance. Effect.

Preferably, the thickness of the PVC insulating layer 2 is 3.9-4.1mm, preferably 4mm. The wire diameter of the grounding steel wire 4 is 0.2-0.5 mm, preferably 0.35 mm. During use, the grounding steel wire 4 is grounded.

When in use, since the outer surface of the core wire is sequentially wound along its circumferential direction to form a tinned copper isolation layer 1 with good shielding effect, it has a better shielding effect than the ordinary aluminum foil layer, and effectively improves the anti-radiation and anti-interference capabilities. Reduce external interference, thereby effectively ensuring the quality of audio and video signal transmission; at the same time, the outer surface of the copper wire in the conductor is provided with a tin-plated layer to form a double shielding effect, and the shielding effect is good; at the same time, the core wire can be effectively protected by the PVC insulation layer 2, It is not easy to be hardened, not easy to be damaged and worn by external force, has high wear resistance and aging resistance, and has a long service life. In addition, there is a grounding steel wire 4, which not only further improves the shielding effect and strengthens the tensile strength through grounding, but also It is convenient to quickly tear off the PVC insulation layer 2 without tools to expose the core wire, which is convenient for wiring and brings convenience to use.

According to the disclosure and teaching of the above specification, those skilled in the art to which the present utility model belongs can also change and modify the above embodiment. Therefore, the utility model is not limited to the specific implementation manners disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present utility model. As described in the above embodiments of the utility model, wires and cables of other structures obtained by adopting the same or similar structure are all within the protection scope of the utility model.

Claims (3)

1. a kind of multicore shielding electric wire, it is characterised in that it include by seven strands of wire strandings cored wire and be coated on successively Tin-coated copper separation layer and PVC insulating barriers on the cored wire, circumferential direction of the tin-coated copper separation layer by tinned wird along cored wire is successively The outer surface for being wrapped in cored wire is formed；0.10~0.14mm of thickness of the tin-coated copper separation layer；The wire includes many copper The stranded PVC insulating barriers into conductor and cladding on the conductor of line, the outer surface of the copper cash is provided with tin coating, described tin plating Provided with ground connection steel wire between copper separation layer and PVC insulating barriers.

2. multicore shielding electric wire according to claim 1, it is characterised in that：The thickness of the PVC insulating barriers be 3.9~ 4.1mm。

3. multicore shielding electric wire according to claim 1 or 2, it is characterised in that：The line footpath of the ground connection steel wire for 0.2~ 0.5mm。