WO2018157636A1

WO2018157636A1 - Category 6a unshielded data cable

Info

Publication number: WO2018157636A1
Application number: PCT/CN2017/113435
Authority: WO
Inventors: 杨政国; 贾健佳; 邹海鸥; 齐刚; 张丽红; 庞凯; 邱绍坤
Original assignee: 张家港特恩驰电缆有限公司
Priority date: 2017-02-28
Filing date: 2017-11-29
Publication date: 2018-09-07
Also published as: CN106653196A

Abstract

A category 6A unshielded data cable, mainly for use in resolving the problems of severe crosstalk between category 6A unshielded data cables and between internal twisted pair cables, and large electromagnetic wave loss. According to the solution, the category 6A unshielded data cable comprises a catching frame (1), twisted pairs (2), and a jacket (3); the catching frame (1) is provided with catching cavities (11) for firmly catching the twisted pairs (2); and protrusions (31) produced by support of the catching frame (1) are formed on the jacket (3). The technical solution resolves the problem well and can be used for transmission of network information.

Description

A Category 6A unshielded data cable

Technical field

The present invention relates to the field of wire and cable technology, and in particular to a Category 6A unshielded data cable.

Background technique

With the continuous development of information networks, information communication is becoming more and more frequent, and the information exchange capacity is also increasing. Data cable has become an important transmission medium for network information, and will play an important role in cloud computing, data center, three-dimensional technology, national defense, finance, and meteorology.

The development of 10 Gigabit Ethernet has become the direction and trend of network construction in the future. The transmission characteristics of 10 Gigabit Ethernet high-speed data transmission cable will greatly provide the market demand for 10 Gigabit Ethernet, and it will greatly stimulate 10 Gigabit. The staff and application of the data cable.

The data transmission frequency of the 10G data cable reaches 500MHz. When the transmission frequency of the cable is up to 500MHz, the crosstalk between different pairs inside the cable will be large. This problem will increase with the transmission frequency, signal level, and laying. The increase in length is more prominent. The cable external crosstalk ANEXT problem is more serious. ANEXT has been recognized as the biggest limiting factor in increasing channel capacity.

Therefore, it is especially important to reduce the external crosstalk of the cable by the advanced cable structure design.

For example, the Chinese patent document CN101719398A discloses a super six-type unshielded data cable. The present invention relates to a data cable in the field of electronic information technology, and more particularly to a high-speed transmission data cable for data signals such as audio, video, and images. A super six types of unshielded data cable, the data cable is composed of an outer insulating sheath, a cross-isolated skeleton and four sets of unshielded wire pairs, and the inner ring of the insulating outer protective sleeve is provided with a serrated groove, and the cross-isolation skeleton is adopted. Foamed cross-isolation skeleton, the cross-isolation skeleton separates the inner cavity of the insulating outer protective sleeve into four cavities, four sets of unshielded wire pairs are respectively disposed in four cavities, and a tear line is arranged in one cavity, The non-shielded wire pair is composed of two wires, and the wire is composed of a copper conductor and an insulating layer wrapped around the copper conductor. The above invention cannot reduce sufficient electromagnetic wave loss, and the crosstalk resistance performance between cables is insufficient, and the crosstalk performance between pairs is also insufficient.

Summary of the invention

The technical problem to be solved by the present invention is to solve the problem that the crosstalk between the 6A type unshielded data cables and the internal twisted pairs is serious and the electromagnetic wave loss is large, and a new type 6A unshielded data cable is proposed. The cable has the characteristics of strong anti-crosstalk anti-interference performance between cables, strong anti-interference ability inside and outside the twisted pair, and small electromagnetic wave loss.

In order to solve the above technical problem, the technical solution adopted by the present invention is as follows: a Category 6A unshielded data cable includes a card frame, a twisted pair and a sheath, and the card frame is provided with a pair of strands firmly stuck a latching cavity on which a protrusion formed by the latching of the latching frame is formed.

In the above technical solution, preferably, the card frame is formed to accommodate the twisted pair by setting a "cross type" Card slot.

More preferably, the card slots are at least four, and each of the card slots can accommodate at least one pair of the twisted pairs.

Preferably, a cavity is provided between the pair of strands and the sheath.

Preferably, each end portion of the card frame is provided with a support block for forming a protrusion of the sheath, and an outwardly extending side wing is respectively disposed at two sides of the bottom of the support block.

Preferably, the card skeleton is composed of one or more low dielectric constant high density pure PE materials.

Preferably, four pairs of said twisted pairs are "spiral" together with said card frame.

Preferably, the projections are "spiral" on the sheath.

In the present invention, the card frame made of a low-density high-density pure PE material is formed into a "cross type" to form at least four card slots and each card cavity can accommodate at least one pair of twisted pairs. The flank on each end of the card frame can prevent the pair of twisted wires from being removed, and the flank has a certain elasticity. Under normal circumstances, the elastic pair acts on the twisted pair to fix the twisted pair. The role of the twisted pair under the appropriate external force to open the flank into the card cavity, and then through the cooperation of the flank and the card cavity, the twisted pair can be firmly and stably in the card cavity without any occurrence The movement makes the distance between the four pairs of twisted pairs more uniform and stable, greatly improving the crosstalk defense between the twisted pairs, and improving the anti-interference ability of the twisted pair inside and outside;

In the present invention, the card frame is supported by the "elliptical" support blocks at the four ends to form a cavity for accommodating the air between the sheath and the twisted pair, so that the twisted pair and the sheath are not Contact is generated, and the electromagnetic wave loss inside the cable is greatly reduced due to the low dielectric constant of the air;

In the present invention, the card skeleton forms four protrusions by the sheath struts through the four end portions of the "elliptical" support block, and since the four pairs of the twisted pairs are "spiral" with the card frame "Card together, the four protrusions are also "spiral" on the sheath, which makes the original circular sheath change the spiral shape. In daily use, in order to make the wiring beautiful, often multiple data cables are bundled together. When the spiral data cable is bundled, a certain space is generated between them, thereby greatly improving the anti-crosstalk anti-jamming performance between the cables.

In the present invention, the main technical indicators that can be achieved by using the product of the present invention are as follows:

(1) Attenuation (ATT): ≤45dB/100m (500MHz);

(2) Near-end crosstalk (NEXT): ≥35.8dB/100m (500MHz);

(3) Near-end crosstalk power and (PSNEXT): ≥ 31.8dB/100m (500MHz);

(4) Return loss (RL): ≥18.3dB/100m (500MHz);

(5) Near-end crosstalk attenuation crosstalk power and (PSANEXT): ≥64.0dB/100m (500MHz);

(6) Far-end crosstalk attenuation crosstalk power ratio (PSAACR-F): ≥ 30.00 m (500 MHz).

By looking at the data, it can be found that a Category 6A unshielded data cable of the present invention can be used in various technical indicators, especially There is a very significant optimization effect on the near-end crosstalk attenuation crosstalk power and far-end crosstalk attenuation crosstalk power and both.

DRAWINGS

Figure 1 is a cross-sectional view of a Category 6A unshielded data cable of the present invention;

2 is a front elevational view of a sheath of a Category 6A unshielded data cable of the present invention;

3 is a schematic structural view of a card frame and a twisted pair of a Category 6A unshielded data cable according to the present invention.

In the figure:

1, card frame 11, card cavity 12, cavity

13, support block 14, side wing 2, twisted pair

3, sheath 31, bulge

detailed description

In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail below with reference to the embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiment 1:

As shown in FIG. 1 , a 6A type unshielded data cable includes a card frame 1 , a twisted pair 2 and a sheath 3 , and the card frame 1 is provided with a card for firmly holding the twisted pair 2 The cavity 11 is formed with a protrusion 31 formed by the struts of the card frame 1 , and the card frame 1 is formed to be a "cross type" to form the pair 2 a latching cavity 11 , at least four of the latching cavities 11 , each of the latching cavities 11 can accommodate at least one pair of the twisted pairs 2 , and the pair of twisted pairs 2 and the sheath 3 are disposed There is a cavity 12, and each end of the card frame 1 is provided with a support block 13 for supporting the sheath 3 to form a protrusion 31, and two sides of the bottom of the support block 13 are respectively provided with an outwardly extending side wing 14 .

As shown in FIG. 2, the projection 31 is "spiral" on the sheath 3.

As shown in FIG. 3, four pairs of the twisted pairs 2 are "spiral" together with the card frame 1.

In the present invention, the card skeleton 1 is composed of 70% of LDPE material, 20% of HDPE material, and 10% of POE material.

In the present invention, the card frame 1 made of a high-density high-density pure PE material is formed into a "cross type" to form at least four card-chambers 11 and each of the card-chambers 11 can accommodate at least one pair. The twisted pair 2, the side flaps 14 on each end of the card frame 1 can serve to prevent the twisted pair 2 from being removed, and the side flaps 14 have a certain elasticity, which is normally adhered to the twisted pair due to the elastic action. 2 plays the role of fixing the twisted pair 2, the twisted pair 2 opens the side flap 14 under the appropriate external force into the latching cavity 11, and then the pair of the wing 14 and the latching cavity 11 make the twisted pair 2 It can be firmly and stably located in the card cavity 11 without any movement, so that the distance between the four pairs of twisted pairs 2 is more uniform and stable, and the crosstalk between the twisted pair 2 is greatly improved, and the degree is improved. Anti-interference ability inside and outside the twisted pair 2;

In the present invention, the card frame 1 is supported by the four end portions of the "elliptical" support block 13 so that the air gap 12 is formed between the sheath 3 and the twisted pair 2, so that the winding The wire pair 2 does not make contact with the sheath 3, and the electromagnetic wave loss inside the cable is greatly reduced due to the low dielectric constant of the air;

In the present invention, the card frame 1 is supported by the four-end "elliptical" support block 13 to form four protrusions 31, and because of the four pairs of the pair 2 and the card position The skeleton 1 is "spiral" stuck together, and the four protrusions 31 are also "spiral" on the sheath 3, so that the original circular sheath 3 is changed in a spiral shape, and in daily use, in order to make the wiring beautiful. It is often the case that multiple data cables are bundled together. When the spiral data cable is bundled, a certain space is generated between them, thereby greatly improving the anti-crosstalk anti-jamming performance between the cables.

(1) Attenuation (ATT): ≤45dB/100m (500MHz);

(2) Near-end crosstalk (NEXT): ≥35.8dB/100m (500MHz);

(3) Near-end crosstalk power and (PSNEXT): ≥33.8dB/100m (500MHz);

(4) Return loss (RL): ≥18.3dB/100m (500MHz);

By looking at the data, it can be found that a class 6A unshielded data cable of the present invention can be very significant in various technical indicators, especially in near-end crosstalk attenuating crosstalk power and far-end crosstalk attenuating crosstalk power. Improved results.

[Comparative Example 1]:

A super six-type unshielded data cable is disclosed in the Chinese patent document CN101719398A. The main technical indicators of the product of the invention are as follows:

(1) Attenuation (ATT): ≤ 45.3 dB / 100 m (500 MHz);

(2) Near-end crosstalk (NEXT): ≥33.8dB/100m (500MHz);

(3) Near-end crosstalk power and (PSNEXT): ≥ 31.8dB/100m (500MHz);

(4) Return loss (RL): ≥15.2dB/100m (500MHz);

(5) Near-end crosstalk power and (PSANEXT): ≥52.0dB/100m (500MHz).

The technical indicators show that the performance of the invention product is still very insufficient, and the anti-crosstalk interference performance between the cables and the crosstalk performance between the pairs are not improved.

Other than the above-described embodiments, the present invention may have other embodiments. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.

Claims

A Category 6A unshielded data cable comprising a card frame (1), a twisted pair (2) and a sheath (3), characterized in that: the card frame (1) is provided with a twisted pair ( 2) A clamping cavity (11) that is firmly clamped, and a protrusion (31) formed by the gusset of the latching frame (1) is formed on the sheath (3).
A Category 6A unshielded data cable according to claim 1, wherein said card frame (1) is formed into a "cross type" to form a card slot for accommodating said twisted pair (2) ( 11).
A Category 6A unshielded data cable according to claim 2, wherein said card slot (11) is at least four, and each of said card slots (11) can accommodate at least one pair of said strands Yes (2).
A Category 6A unshielded data cable according to claim 1, characterized in that a cavity (12) is provided between the twisted pair (2) and the sheath (3).
A Category 6A unshielded data cable according to claim 1, characterized in that each end of the card frame (1) is provided with a support block for supporting the sheath (3) to form a protrusion (31). (13), on the two sides of the bottom of the support block (13), there are respectively provided side flaps (14).
A Category 6A unshielded data cable according to claim 1, wherein said card frame (1) is composed of one or more low dielectric constant high density pure PE materials.
A Category 6A unshielded data cable according to claim 1, wherein four pairs of said twisted pairs (2) are "spiral" with said card frame (1).
A Category 6A unshielded data cable according to claim 1, wherein said projections (31) are "spiral" on said sheath (3).