CN214753009U

CN214753009U - Data transmission line for power over Ethernet

Info

Publication number: CN214753009U
Application number: CN202120760118.XU
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: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-11-16
Anticipated expiration: 2031-04-14

Abstract

A data transmission line for power over Ethernet is characterized by comprising a sheath, a braid and four groups of core wire groups, wherein the braid is coated outside the four groups of core wire groups, and the sheath is coated outside the braid; the core wire group is formed by twisting two single wires, and an aluminum foil shielding layer is coated outside the twisted single wires; the single wire consists of a conductor and an insulating layer, the insulating layer is coated outside the conductor, and the insulating layer comprises an inner solid bonding layer, a middle foaming layer and a protective layer of a sheath; compared with the prior art, through promoting the foaming degree and increasing the technique that the crust layer thickness combined together, both reduced the single line diameter and provided good compressive capacity again, prevented that the structural deformation that follow-up processing caused from damaging. The traditional longitudinal wrapping process is optimized, so that the transmission performance required by the standard is achieved, the expectation that the outer diameter of the whole cable is reduced by more than 5% is achieved, the method can be applied to the construction occasions of high-density miniaturized products which are increasingly concerned by the market, and the product cost is reduced by more than 5%.

Description

Data transmission line for power over Ethernet

Technical Field

The utility model belongs to the technical field of the cable, especially, a data transmission line for ethernet power supply.

Background

Ethernet is a computer local area network technology. The IEEE 802.3 standard of the IEEE organization sets forth a technical standard for ethernet, which specifies the contents of the wiring, electrical signals, and medium access layer protocols, including the physical layer. Ethernet is currently the most commonly used local area network technology, replacing other local area network technologies such as token ring, FDDI, and ARCNET.

In the prior art, a shielding type super six-class and seven-class data cable is usually adopted as an Ethernet electrified data transmission line, single wires of the two cables adopt a series connection wire sheath and foam insulation extrusion technology, the foaming degree is less than or equal to 50%, and the sheath thickness is less than or equal to 0.07 mm. In order to prevent the extrusion deformation of the core wire in the processing process, the common method is to control the foaming degree to increase the insulation diameter, then to-twist, cable-forming, shielding and sheath are carried out, and the nominal outer diameter of the cable is mostly between 7.4 mm and 7.8mm according to different shielding layer numbers; the product with the design has high transportation cost, is not beneficial to the high-density miniaturization trend of the existing installation and wiring and the ventilation and heat dissipation problems of the emerging Ethernet power supply lower pipeline, and has certain potential safety hazards when the transmission performance of the cable is influenced along with the rise of the temperature of the Ethernet power supply lower cable.

The main reason why the diameter of the cable cannot be controlled to be smaller in the traditional process is that the data transmission performance reaches more than 500MHz bandwidth, and the requirement of pure PE insulation as a medium cannot be met. The foaming process reduces the dielectric constant of insulation, and solves the problems of attenuation, transmission speed and the like. However, the structural compression resistance of the insulating layer is obviously reduced when the foaming degree reaches a certain critical point, and the twisted-pair data cable can ensure effective data transmission only after being twisted-pair and stranded due to the structural characteristics of the twisted-pair data cable. The balance point between cable diameter and process stability is very difficult to control.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the defect among the above-mentioned prior art, provide a compressive capacity is good, compact structure, low cost's a data transmission line for the ethernet power supply.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a data transmission line for power over Ethernet is characterized by comprising a sheath, a braid and four groups of core wire groups, wherein the braid is coated outside the four groups of core wire groups, and the sheath is coated outside the braid; the core wire group is formed by twisting two single wires, and an aluminum foil shielding layer is coated outside the twisted single wires; the single wire consists of a conductor and an insulating layer, the insulating layer is coated outside the conductor, and the insulating layer comprises a solid bonding layer of an inner layer, a foaming layer in the middle and a protective layer of an outer skin.

As a preferred scheme of the utility model, the foaming degree of the foaming layer is 46-60%, the thickness of the outer skin protective layer is 0.095-0.10 mm, and the diameter of the insulating layer is 1.25-1.45 mm.

As a preferred scheme of the utility model, the transposition pitch between the single line is 15mm-40 mm.

As an optimized scheme of the utility model, the weaving layer is woven by the wire and is formed.

As a preferred scheme of the utility model, the weaving layer is woven by adopting an equal-division 40-50-degree angle process.

As a preferred scheme of the utility model, four group heart yearn group twists, and the transposition pitch between four group heart yearn group is 70mm-120 mm.

As an optimized proposal of the utility model, the sheath is made of PE, LSZH, PVC, TPE or PUR.

As a preferred scheme of the utility model, the thickness of the sheath is 0.50mm-0.60 mm.

As a preferred embodiment of the present invention, the insulating layer is made of polyethylene, polypropylene, or a fluorine-containing material.

The beneficial effects of the utility model are that, compare with prior art: through promoting the foaming degree and increasing the technique that the crust layer thickness combined together, both reduced the single line diameter and provided good compressive capacity again, prevented the structural deformation damage that subsequent processing caused. The traditional longitudinal wrapping process is optimized, so that the transmission performance required by the standard is achieved, the expectation that the outer diameter of the whole cable is reduced by more than 5% is also achieved, the cable can be applied to the construction occasions of high-density miniaturized products which are increasingly concerned by the market, the product cost is reduced by more than 5%, meanwhile, the ventilation effect is increased in the limited space, and the temperature rise of the cable in the Ethernet power supply state is favorably reduced.

Drawings

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

reference numbers in the figures: sheath 1, aluminium foil shielding layer 2, conductor 3, insulating layer 4, weaving layer 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 data transmission line for power over ethernet includes a sheath 1, a braid 5 and four sets of core wires, the braid 5 is wrapped outside the four sets of core wires, and the sheath 1 is wrapped outside the braid 5; the core wire group is formed by twisting two single wires, and an aluminum foil shielding layer 2 is coated outside the twisted single wires; the single wire consists of a conductor 3 and an insulating layer 4, the insulating layer 4 is coated outside the conductor 3, and the insulating layer 4 comprises a solid bonding layer of an inner layer, a foaming layer in the middle and a protective layer of an outer skin.

Conductor 3 is the copper line material, through utilize the plastic extruder to adopt the three-layer mode of crowded package insulating layer 4 of crowded package altogether on the copper conductor, insulating layer 4 contains polyolefin solid insulating material and polyolefin foaming insulating material, and polyolefin solid insulating material constitutes the solid layer of insulating layer 4, and polyolefin foaming insulating material constitutes the foaming layer of insulating layer 4, and solid layer cladding conductor 3 sets up, and the foaming layer contacts with aluminium foil shielding layer 2.

The foaming degree of the foaming layer is 46-60%, the thickness of the outer skin protective layer is 0.095-0.10 mm, the diameter of the insulating layer 4 is 1.25-1.45 mm, the foaming degree of the polyolefin foaming insulating material outside the existing conductor 3 is 45%, the thickness of the foaming layer is 0.06mm, the diameter of the insulating layer 4 is 1.35mm, by increasing the foaming degree of the polyolefin foaming insulating material to more than 56% and increasing the thickness of the polyolefin foaming insulating material to more than 0.095mm, as the foaming degree of the polyolefin foaming insulating material is increased, the density of the polyolefin foaming insulating material is reduced, and in case of increasing the thickness of the polyolefin foaming insulating material, after the aluminum foil shielding layer 2 is coated, the size of the insulating layer 4 is reduced to about 1.30mm due to the deformation of the polyolefin foaming insulating material, and as the thickness of the polyolefin foaming insulating material is increased, the insulating layer 4 has a better pressure resistance, preventing structural deformation damage of subsequent processing.

The twisting pitch between the single wires is 15mm-40mm, and the single wires are twisted to form a twisted wire pair.

The braided layer 5 is formed by braiding metal wires through an equal-division 40-50-degree angle process, preferably, the braided layer 5 is formed by braiding an equal-division 45-degree angle process, the performance of the cable is optimized, the technical defects of crosstalk, loss, delay, error codes and the like of ultrahigh frequency signals in transmission are overcome, and the inner layer of the braided layer 5 is provided with a total composite metal foil.

Four groups of core wire groups are twisted, the twisting pitch among the four groups of core wire groups is 70mm-120mm, the four groups of core wire groups are twisted to form hinge lines, and the four-head longitudinal wrapping forming die holder is used for wrapping the total composite metal foil on the four groups of core wire groups.

The sheath 1 is made of PE, LSZH, PVC, TPE or PUR, and the thickness of the sheath 1 is 0.50mm-0.60 mm.

Under the action of the sheath 1, the braid 5 and the four groups of core wire groups, the diameter of the cable with 4 pairs of 8-core structures can be controlled within 7.3 mm.

The insulating layer 4 is made of polyethylene, polypropylene or fluorine-containing material.

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 invention; 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, aluminium foil shield 2, conductor 3, insulating layer 4, braid 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 in a manner that is inconsistent with the spirit of the invention.

Claims

1. A data transmission line for power over Ethernet is characterized by comprising a sheath (1), a braid (5) and four groups of core wire groups, wherein the braid (5) is coated outside the four groups of core wire groups, and the sheath (1) is coated outside the braid (5); the core wire group is formed by twisting two single wires, and an aluminum foil shielding layer (2) is coated outside the twisted single wires; the single wire is composed of a conductor (3) and an insulating layer (4), the insulating layer (4) is coated outside the conductor (3), and the insulating layer (4) comprises an inner solid bonding layer, a middle foaming layer and a protective layer of an outer skin.

2. A power over ethernet data transmission line according to claim 1, wherein said foam layer has a degree of foaming of 46-60%, a skin protective layer thickness of 0.095-0.10 mm, and an insulation layer (4) diameter of 1.25-1.45 mm.

3. A power over ethernet data transmission line according to claim 1, wherein the twist pitch between said single wires is 15mm to 40 mm.

4. A power over ethernet data transmission line according to claim 1, characterized in that said braid (5) is braided from metal wires.

5. A data transmission line for power over Ethernet according to claim 4, characterized in that said braid (5) is braided using an angle process of 40 ° -50 ° in equal parts.

6. A power over ethernet data transmission line in accordance with claim 1, wherein said four sets of core wires are twisted, and the twist pitch between the four sets of core wires is in the range of 70mm to 120 mm.

7. A power over ethernet data transmission line according to claim 1, characterized in that said sheath (1) is of PE or LSZH or PVC or TPE or PUR.

8. A power over Ethernet data transmission line according to claim 7, characterized in that the sheath (1) has a thickness of 0.50mm-0.60 mm.

9. A power over ethernet data transmission line according to claim 1, characterized in that said insulating layer (4) is of polyethylene or polypropylene or a fluorine-containing material.