CN217485112U

CN217485112U - Multilayer signal shielding transmission cable

Info

Publication number: CN217485112U
Application number: CN202220221673.XU
Authority: CN
Inventors: 陈旦
Original assignee: ZHEJIANG ZHONGRUI TECHNOLOGY CO LTD
Current assignee: ZHEJIANG ZHONGRUI TECHNOLOGY CO LTD
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-09-23
Anticipated expiration: 2032-01-27

Abstract

The utility model provides a multilayer signal shielding transmission cable, includes the insulation shielding line, the insulation shielding line includes outer plastic-aluminum composite bed an of conductor, crowded package insulating layer outside the composite bed an of plastic-aluminum and crowded package insulating layer a, two the insulation shielding line pair twist forms insulating twisted pair, and insulating twisted pair is equipped with shielding layer b outward, and shielding layer b is equipped with the plastic-aluminum composite bed b outward, constitutes twisted pair shielded wire, seven the twisted pair shielded wire is middle one, six rows in periphery, is equipped with the obturator between the twisted pair shielded wire, outwards is equipped with around covering a, total shielding layer, around covering b and sheath in proper order. The utility model discloses a cable wholly possesses anti strong electromagnetic interference's ability under the high temperature and high humidity condition, makes a whole set of control scheme have higher environmental suitability and reliable transmission nature grade, has satisfied operation requirement.

Description

Multilayer signal shielding transmission cable

Technical Field

The utility model relates to a transmission cable technical field especially relates to a multilayer signal shielding transmission cable.

Background

The transmission cable can be used as a medium for electrical connection between two electronic devices and can stably perform expected signal transmission operation, so the transmission cable is generally applied to various electronic devices. However, although the existing transmission cables include cables such as a control cable, a shielding power line, a twisted pair shielding cable and a super-six-type network cable, which are various, the upper cable cannot effectively shield signal attenuation in a high-humidity and high-temperature environment, the shielding effect is not strong, the signal shielding effect cannot be achieved, and the signal transmission is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of above-mentioned current device, provide a multilayer signal shielding transmission cable, wholly possess anti strong electromagnetic interference's under the high temperature and high humidity condition ability, make a whole set of control scheme have higher environmental suitability and reliable transmission nature grade, satisfied operation requirement.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a multilayer signal shielding transmission cable, includes the insulation shielding line, the insulation shielding line includes conductor, the outer plastic-aluminum composite bed a of conductor, the outer crowded package insulating layer of aluminium-plastic composite bed a and the outer shielding layer a of crowded package insulating layer. And twisting the two insulated shielded wire pairs to form an insulated twisted pair, wherein a shielding layer b is arranged outside the insulated twisted pair, and an aluminum-plastic composite layer b is arranged outside the shielding layer b to form the twisted shielded wire. Seven twisted-pair shielded wires are arranged in the middle and in six peripheral strips, a filling body is arranged between the twisted-pair shielded wires, and a wrapping layer a, a total shielded layer, a wrapping layer b and a sheath are sequentially arranged outwards.

Preferably, the conductor is formed by twisting 7 silver-plated copper wires with the diameter of 0.12 mm, and has excellent electrical conductivity, thermal conductivity, corrosion resistance and high-temperature oxidation resistance.

Preferably, the material of the extruded insulating layer is cross-linked polyvinyl chloride, and the extruded insulating layer has the advantages of high softening point, dimensional stability at high temperature, solvent resistance, high mechanical strength and the like.

Preferably, the shielding layer a, the shielding layer b and the total shielding layer are braided and shielded by tinned copper wires, so that the shielding effect is good, and the corrosion resistance and the oxidation resistance are higher.

Preferably, the filling body is a hemp rope.

Preferably, the wrapping layer a is made of non-woven fabrics.

Preferably, the wrapping layer b is made of glass fiber, so that the insulation performance is good, the heat resistance is strong, the corrosion resistance is good, and the mechanical strength is high.

Preferably, the material of the sheath is heat pressure resistant polyvinyl chloride.

The beneficial effects of the utility model reside in that: 1. the comprehensive structure design meets the requirements of various core numbers, multilayer structures and signal transmission performance increase;

2. the signal line conductor adopts a silver-plated copper wire, so that the signal line conductor has excellent electrical conductivity and reduces the resistance of the conductor, the surface of the conductor is longitudinally and tightly wrapped with aluminum-plastic composite paper, an insulating layer adopts crosslinked polyethylene and has excellent electrical performance, a lower dielectric constant is the fundamental guarantee of low attenuation and low capacitance, a shielding layer adopts a tin-plated copper wire winding shielding form to effectively prevent interference between each wire group in the cable and the outside on the cable, and a sheath adopts Teflon plastic and has the characteristics of high burning point and environmental resistance such as high temperature resistance, mildew resistance, salt spray resistance and the like;

3. the use of low-resistance silver-plated copper conductors, low-dielectric-constant insulation and sub-shielding and total shielding is combined, so that the whole cable has the capability of resisting strong electromagnetic interference under the high-temperature and high-humidity condition, the whole set of control circuit has higher environmental adaptability and reliable transmission level, and the use requirement is met.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural view of the insulated shielded wire of the present invention;

fig. 3 is a schematic structural diagram of the pair-twisted shielding wire of the present invention.

The main elements in the figures are illustrated with reference numbers: 10. an insulated shield wire; 11. a conductor; 12. an aluminum-plastic composite layer a; 13. extruding an insulating layer; 14. a shielding layer a;

20. twisted-pair shielded wires; 21. a shielding layer b; 22. an aluminum-plastic composite layer b;

30. a filler; 40. a wrapping layer a; 50. a total shielding layer; 60. a lapping layer b; 70. a sheath.

Detailed Description

The present invention will be further described with reference to the following detailed description and the accompanying drawings.

The implementation mode is as follows: as shown in fig. 1 to 3, a multi-layer signal shielding transmission cable comprises an insulating shielding wire 10, wherein the insulating shielding wire 10 comprises a conductor 11 formed by twisting 7 silver-plated copper wires with the diameter of 0.12 mm, a layer of aluminum-plastic composite layer a12 is longitudinally and tightly wrapped outside the conductor 11, and an extruded insulating layer 13 and a shielding layer a14 are sequentially arranged outside the aluminum-plastic composite layer a 12.

The twisted-pair shielded wire 20 is formed by twisting two insulated shielded wires 10 to form an insulated twisted pair, and a shielding layer b21 is braided outside the insulated twisted pair, and an aluminum-plastic composite layer b22 is wrapped outside the shielding layer b 21.

Be middle one, six peripheral arrangements with seven pair twist shielded wires 20, be equipped with the obturator 30 between the pair twist shielded wire 20, outwards be equipped with in proper order around covering a40, total shielding layer 50, around covering b60 and sheath 70, constitute the transmission cable of this embodiment.

In the above embodiment, the extruded insulation layer 13 is made of cross-linked polyvinyl chloride, the shielding layer a14, the shielding layer b21 and the total shielding layer 50 are braided and shielded by tinned copper wires, the filler 30 is hemp rope, the wrapping layer a40 is made of non-woven fabric, the wrapping layer b60 is made of glass fiber, and the sheath 70 is made of thermal pressure resistant polyvinyl chloride.

The above description is only the specific embodiments of the present invention, but the structural features of the present invention are not limited thereto, the present invention can be used in similar products, and any person skilled in the art is in the field of the present invention, and all the changes or modifications made are covered by the claims of the present invention.

Claims

1. A multilayer signal shielding transmission cable comprising an insulated shielded wire (10), characterized in that: the insulation shielding wire (10) comprises a conductor (11), an aluminum-plastic composite layer a (12) outside the conductor (11), an extruded insulation layer (13) outside the aluminum-plastic composite layer a (12) and a shielding layer a (14) outside the extruded insulation layer (13);

the two insulated shielding wires (10) are twisted in pairs to form an insulated twisted pair, a shielding layer b (21) is arranged outside the insulated twisted pair, and an aluminum-plastic composite layer b (22) is arranged outside the shielding layer b (21) to form a twisted pair shielding wire (20);

seven twist pair shielded wire (20) are middle one, six peripheral arrangements, are equipped with obturator (30) between twist pair shielded wire (20), outwards are equipped with around covering a (40), total shielding layer (50), around covering b (60) and sheath (70) in proper order.

2. The multilayer signal shielding transmission cable of claim 1, wherein: the conductor (11) is formed by twisting 7 silver-plated copper wires with the diameter of 0.12 mm.

3. The multilayer signal shielding transmission cable of claim 1, wherein: the material of the extruded insulating layer (13) is cross-linked polyvinyl chloride.

4. The multilayer signal shielding transmission cable of claim 1, wherein: the shielding layer a (14), the shielding layer b (21) and the total shielding layer (50) are braided and shielded by adopting tinned copper wires.

5. The multilayer signal shielding transmission cable of claim 1, wherein: the filling body (30) is a hemp rope.

6. The multilayer signal shielding transmission cable of claim 1, wherein: the material of the wrapping layer a (40) is non-woven fabric.

7. The multilayer signal shielding transmission cable of claim 6, wherein: the wrapping layer b (60) is made of glass fiber.

8. A multilayer signal shielding transmission cable according to any one of claims 1 to 7, wherein: the sheath (70) is made of heat pressure resistant polyvinyl chloride.