CN215868780U

CN215868780U - Ultra-fine and ultra-six-type shielding data flexible electric wire

Info

Publication number: CN215868780U
Application number: CN202120816418.5U
Authority: CN
Inventors: 张坤; 姚云翔; 倪冬华; 沈健彬
Original assignee: Zhejiang Zhaolong Interconnect Technology Co ltd
Current assignee: Zhejiang Zhaolong Interconnect Technology Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2022-02-18
Anticipated expiration: 2031-04-21

Abstract

A superfine and ultra-six-type data shielding flexible electric wire comprises a sheath, a metal braid and a plurality of groups of core wires which are arranged from outside to inside; the core wires comprise two single wires formed by twisting and aluminum foils coated outside the two single wires, and a plurality of groups of core wires are twisted and molded; the single wire comprises a conductor and an insulating layer, the conductor is coated by the insulating layer, and the insulating layer is of a solid core structure; the metal braided layer is coated outside the twisted and formed multiple groups of core wires, and the sheath is coated outside the metal braided layer; compared with the prior art, the diameter of the cable is reduced by adopting 30AWG single or multi-strand stranded copper conductors, the structural stability and the shielding performance of the cable are improved by adopting flexible self-adhesive aluminum foil composite strip line pairs for shielding and copper wire weaving shielding, the flexibility of the cable is improved by adopting flexible PVC, TPE and PUR protective layers, the minimum wire diameter can be controlled to be about 4.5mm, the wire diameter is reduced by 25% on a same scale, the cable can be bent at will without damage, the wiring standard of an IEC61156-6 working area and the TIA568.2-D jumper mode test can be met, and the maximum service length reaches 10 m.

Description

Ultra-fine and ultra-six-type shielding data flexible electric wire

Technical Field

The utility model belongs to the technical field of electric wires, and particularly relates to a superfine and super-six-class shielding data flexible electric wire.

Background

The traditional shielded super six-category and seven-category data cables generally adopt solid or twisted conductors with the number of 26AWG or more, aluminum foil wire pair shielding, copper wire braided shielding and sheath structures. The diameter of the cable of the product with the design is more than 6.0mm, the flexibility is insufficient, and the aluminum foil shielding closing direction is not fixed longitudinally, so that the wire pairs are easy to interfere with each other due to signal leakage. With the continuous development of 5G networks, jumper wires for data centers and wiring for data transmission in industrial cabinets put forward new demands on the industry, and the trend of high-density miniaturization is irreversible.

In the traditional process, in order to avoid signal leakage phase interference between wire pairs caused by overturning of aluminum foil shielding in the wire stranding process, the aluminum foil with higher thickness and hardness is generally adopted as shielding, and at present, a structure with the insulation diameter of more than 26AWG (arrayed waveguide grating) conductors of more than 1.0mm is adopted, so that the existing shielding type ultra-six or seven types of data cables are generally large in wire diameter and insufficient in flexibility. The dense and rough arrangement of the wires after the wiring in the data center cabinet is finished increases the great cost for the future maintenance, is not beneficial to the heat dissipation of the equipment and causes meaningless power consumption. In addition, the data transmission line in the industrial equipment has limited space and fixed size of a connector socket, and the traditional cable cannot be matched with the connector well.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides the ultra-fine and ultra-super six types of shielded data flexible electric wires with smaller diameter, convenient manufacture and good bending effect.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows: a superfine and ultra-six-type data shielding flexible electric wire comprises a sheath, a metal braid and a plurality of groups of core wires which are arranged from outside to inside; the core wires comprise two single wires which are twisted and an aluminum foil coated outside the two single wires, the aluminum foil is thermally attached to the surfaces of the single wires, and a plurality of groups of core wires are twisted and molded; the single wire comprises a conductor and an insulating layer, the conductor is coated by the insulating layer, and the insulating layer is of a solid core structure; the metal braided layer is coated outside the twisted and formed multiple groups of core wires, and the sheath is coated outside the metal braided layer.

As a preferable scheme of the present invention, 4 groups of core wires are arranged in the metal braid, and the conductor is formed by twisting 7 conducting wires.

In a preferred embodiment of the present invention, the conductor has a size of 30AWG and the insulating layer has a diameter of 0.65mm to 0.7 mm.

As a preferable scheme of the utility model, the single wires are twisted into twisted wires through pre-back twisting.

As a preferable scheme of the utility model, the thickness of the aluminum foil is 0.03mm-0.04 mm.

As a preferable scheme of the present invention, the aluminum foil is a flexible self-adhesive material.

As a preferable scheme of the utility model, the sheath is made of PVC, TPE and PUR materials.

In a preferred embodiment of the present invention, the thickness of the sheath is 0.55mm to 0.75 mm.

Compared with the prior art, the utility model has the beneficial effects that: adopt single or stranded copper conductor of 30AWG to reduce the cable diameter, adopt flexible self-adhesion aluminium foil composite tape pair shielding and copper wire to weave shielding and promote cable structural stability and shielding performance, and adopt flexible PVC, TPE, PUR protective layer promotion cable compliance, make the line diameter can be controlled at about 4.5mm minimum, the unity is 25% decline, compliance still can greatly promote simultaneously, can accomplish to buckle at will and do not constitute the damage to the cable, make things convenient for the installation maintenance of various space environment, can satisfy IEC61156-6 workspace wiring standard and TIA568.2-D jumper mode test, maximum service length reaches 10 m.

Drawings

FIG. 1 is a schematic structural view of the present invention;

reference numbers in the figures: sheath 1, metal braid 2, aluminium foil 3, insulating layer 4, conductor 5.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 1, a super-fine and super-six-type data-shielding flexible electric wire comprises a sheath 1, a metal braid 2 and a plurality of groups of core wires arranged from outside to inside; the core wires comprise two single wires which are formed by twisting and an aluminum foil 3 which is coated outside the two single wires, the aluminum foil is thermally attached to the surfaces of the single wires, and a plurality of groups of core wires are twisted and molded; the single wire comprises a conductor 5 and an insulating layer 4, the insulating layer 4 is arranged by coating the conductor 5, and the insulating layer 4 is of a solid core structure; the metal braid 2 is coated outside the twisted multi-group core wires, and the sheath 1 is coated outside the metal braid 2.

4 groups of core wires are arranged in the metal braid layer 2, the conductor 5 is formed by twisting 7 conducting wires,

the size of the conductor 5 is 30AWG, the diameter of the insulating layer 4 is 0.65mm-0.7mm, the traditional conductor 5 is 26AWG, the traditional insulating layer 4 is a foamed insulating layer with the diameter of 1mm, the conductor 5 with the size of 30AWG and the solid PE with the diameter of 0.68mm are adopted, compared with the traditional structure, the diameter of the single wire is adjusted by 25%, and the process difficulty of the single wire in the manufacturing process is reduced by adopting the solid PE.

The single wires are twisted into twisted pairs through 100% of pre-back twist, the twisting pitch between the single wires is set according to actual requirements, and the wire winding and unwinding tension of the twisted wires is adjusted according to the diameter of the single wires, so that the impedance consistency and stability of 4 pairs of twisted wires are ensured.

The thickness of the aluminum foil 3 is 0.03mm-0.04mm, and the aluminum foil 3 is wrapped on 4 twisted single lines through a four-head longitudinal wrapping forming die.

Sheath 1 and insulating layer 4 are PVC, TPE, PUR material, and the compliance can very big promotion, can accomplish to buckle at will not constitute the damage to the cable, make things convenient for the installation maintenance of various space environment, and 1 thickness of sheath is 0.55mm-0.75mm, and the mode formation that the stranding sinle silk was woven through the wire forms the braided shield.

Aluminium foil 3 is polyimide film or PET mylar material, adopt the flexible self-adhesion aluminium foil 3 shielding material of 0.035mm thickness during the stranding, indulge the package moulded die through four-head and cover aluminium foil 3 on 4 twisted wire pairs to the twisted wire pair that will wrap aluminium foil 3, through the heating apparatus after the shaping, aluminium foil 3 can automatic shrink bond formation confined ring and the stable contact of insulating layer 4 after experiencing high temperature, make aluminium foil 3 firm with the automatic bonding of insulating layer 4, guarantee stable cable structure and good shielding effect.

The first embodiment is as follows: the highest transmission frequency of the product can reach 600MHz, the product is 4 pairs of 8-core structures, the wire pair is composed of two insulated core wires, the core wire is formed by twisting two single wires, the single wires are twisted into a twisted wire pair through 100% pre-back twist, the single wires are composed of solid insulating layers and conductors, the size of the core wire can be greatly reduced under the design of the solid core, the wire pair is wrapped with a layer of flexible self-adhesive aluminum foil 3 for longitudinal wrapping shielding during cabling, the outer layer adopts a copper wire weaving total shielding mode, and finally, a layer of plastic clad layer is extruded out of the outermost layer through an extruder, and the clad layer is made of environment-friendly high polymer materials such as PVC, TPE and PUR.

The technical difficulty of ultra-fine shielding data wires below 26AWG is broken through, the ultra-six types of wire pair shielding technology is extended to 30AWG from the limit technology of 26AWG, the diameter of the cable is reduced to 4.5mm from 6.0mm, the reduction amplitude reaches 20%, the flexibility is also greatly broken through, and the bending radius is optimized to be randomly bent from the original 6 times of the diameter of the cable.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more here: sheath 1, metal braid 2, aluminum foil 3, insulating layer 4, conductor 5, etc., without excluding the possibility of using other terms; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A superfine and ultra-six-type data shielding flexible electric wire is characterized by comprising a sheath (1), a metal braid (2) and a plurality of groups of core wires, wherein the sheath (1), the metal braid (2) and the core wires are arranged from outside to inside; the core wires comprise two single wires which are formed by twisting and an aluminum foil (3) which is coated outside the two single wires, the aluminum foil (3) is thermally bonded on the surfaces of the single wires, and a plurality of groups of core wires are twisted and molded; the single wire comprises a conductor (5) and an insulating layer (4), the insulating layer (4) covers the conductor (5), and the insulating layer (4) is of a solid structure; the metal braided layer (2) is coated outside the twisted multi-group core wires, and the sheath (1) is coated outside the metal braided layer (2).

2. The extra-fine extra-six types of data-shielding flexible electric wire as claimed in claim 1, wherein 4 sets of core wires are arranged in the metal braid (2), and the conductor (5) is formed by twisting 7 conducting wires.

3. A very fine and ultra-six type data-shielded flexible electric wire as claimed in claim 1, wherein the conductor (5) has a size of 30AWG and the insulating layer (4) has a diameter of 0.65mm to 0.7 mm.

4. The extra-fine extra-six type data-shielding flexible electric wire as claimed in claim 1, wherein the single wires are twisted into twisted pairs by pre-untwisting.

5. The extra-fine extra-six type data-shielding flexible electric wire as claimed in claim 1, wherein the thickness of the aluminum foil (3) is 0.03mm-0.04 mm.

6. The extra-fine extra-six types of data-shielding flexible electric wire as claimed in claim 5, wherein the aluminum foil (3) is a flexible self-adhesive material.

7. The extra-fine extra-six types of data-shielding flexible electric wire as claimed in claim 1, wherein the thickness of the sheath (1) is 0.55mm-0.75 mm.