JP2006260897A - Unshielded twisted pair cable with special-section member interposed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an atypically placed UTP cable which can lower an interference among an entire wiring (including connectors, etc) by lowering an interference between cables. <P>SOLUTION: The first step: An interposed structure inside a cable is composed of a longitudinal structure of a V-shaped branch ends, a U-shaped branch ends and a channel shaped branch ends. A special-section member being interposed of a different length is used so that a clearance between a pair 2 and a pair 3 becomes longer than the clearance between a pair 1 and a pair 4. A UTP cable with interposed special-section member structure in which an interference (a crosstalk) between the pair 2 and pair 3 is lowered as compared with an interference between the pair 1 and the pair 4, and its exterior is coated. The second step: When a plurality of the above cables are stranded, an average clearance between the cables becomes bigger, and as a result, the interference between pairs of cables is lowered. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is an irregularly shielded UTP (Unshielded Twist Pair) unshielded cable mainly applied to communication cables, and is particularly suitable for LAN cables that perform high-speed transmission, with a transmission frequency of 100 MHz to several GHz. The present invention relates to an irregularly shaped UTP cable that is optimal for high-speed and broadband transmission cables up to.

  When communication is performed at a transmission speed of 10 Gbps in a conventional communication cable transmission line using a metal conductor, not only interference between pairs in the cable but also noise due to interference between cables performing a plurality of 10 Gbps transmissions. It was difficult to achieve a transmission rate of 10 Gbps. As shown in FIG. 1 (d), a conventional LAN cable uses a cross 6 'to increase the distance between pairs in the cable and reduce interference (crosstalk, crosstalk) in the cable. It was.

Japanese Patent Laid-Open No. 9-50715

  The problem to be solved is that the conventional interposition structure such as a cross interposition can reduce the interference between the pairs in the cable, but the interference between the pairs between the cables is the average between the pairs. The separation distance D ′ cannot be increased, sufficient characteristics cannot be obtained, and it cannot be applied to ultrahigh-speed transmission. Alternatively, a shielded twisted pair cable structure that reduces interference by combining multiple twisted wires together with a metal shield is common, but the shield must be removed during connector processing, and the shield must be grounded There was a problem that there was a problem in workability and it was difficult to handle.

 As a result of intensive studies to solve these problems, the present invention firstly has a vertically long structure in which the intervening structure in the cable is a double-ended V-branch type, a double-ended U-shaped branch type, and a double-ended U-shaped branch type. In order to make the separation distance between the pair 2 and the pair 3 longer than the separation distance between the pair 1 and the pair 4, the use of the heterogeneous intervention with different lengths, and the interference between the pair 2 and the pair 3 (crosstalk, crosstalk) ) Is a reduced structure compared to the interference between pair 1 and pair 4, and is a deformed interstitial UTP cable with a jacket on the outside, and secondly, a plurality of twisted first cables are bundled In this case, since the average separation distance between a plurality of cable pairs increases, the interfering UTP cable is reduced in the interference between the cable pairs.

As described above, according to the deformed interposition UTP cable 1 of the present invention,
1. Not only can the interference between pairs in the cable be reduced, but the entire wiring (connector) can be reduced by reducing the interference between cables by enlarging the separation distance of the pair that needs the most interference reduction. Etc.) can be reduced.
2. By twisting the entire cable, the apparent outer diameter is increased, the separation distance between adjacent cable pairs can be increased, and interference from adjacent cables can be reduced.
Therefore, its industrial value is great.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a modified interposer type UTP cable 1 according to the present invention will be described below in detail with reference to the accompanying drawings.

  Although Embodiment 1 of the present invention is not shown in the figure, it uses a vertically-shaped deformed interposition to make the separation distance between the pair 2 and the pair 3 longer than the separation distance between the pair 1 and the pair 4, This is a deformed interposer type UTP cable having a structure in which the interference (crosstalk, crosstalk) between the pair 2 and the pair 3 is reduced as compared with the interference between the pair 1 and the pair 4, and a jacket is provided on the outside thereof.

  In Example 2 of the present invention, as shown in FIG. 1 (d), when a plurality of twisted cables of the present invention are bundled, the average separation distance between a plurality of cable pairs increases. This is a deformed interposer UTP cable in which interference between pairs of cables is reduced. In other words, since the average separation distance D between the pair of cables generated by twisting is larger than that of the conventional cable, this is a deformed intervening UTP cable that reduces interference between the pairs of cables.

  As shown in FIG. 1 (a), the third embodiment of the present invention is an embodiment using the both-end V-branch type interposition 6 of the present invention. 6A. By using the both-end V-branch type interposition 6, the distance between the conductors of the pair 2 and the pair 3 can be kept farthest to minimize the interference between the pairs in the cable. The cable structure is provided with a cover 7.

  Embodiment 4 of the present invention is an embodiment using both-end U-branch type interposition 6 of the present invention as shown in FIG. The same applies to the jacket.

  The fifth embodiment of the present invention is an embodiment using a bifurcated interposer 6 of the present invention as shown in FIG. The same applies to the jacket.

  So far, the modified interposer UTP cable of the present invention has been described by taking V-branch type at both ends, U-branch type at both ends, and U-shaped bifurcated type at both ends, but the important point is that the separation distance between pair 2 and pair 3 is Since the separation distance between the pair 1 and the pair 4 can be increased, the shape is not limited. In this way, there may be some modifications, and it goes without saying that it can be applied to a wide range of uses.

(A) is a cross-sectional view of a deformed intervening UTP cable 1A of a third embodiment using both-ends V-branch interposition of the present invention. (B) is a cross-sectional view of a modified interposer type UTP cable 1B of the fourth embodiment using both-end U-branch interpositions of the present invention. (C) is a cross-sectional view of a deformed interstitial UTP cable 1C of a fifth embodiment using a U-shaped V-branch interposition of both ends of the present invention. (D) is comparative explanatory drawing about the average separation distance between the pair at the time of using 5th Example of this invention and the conventional cross intervention. It is explanatory drawing about interference when the cable terminal 17 of the deformed interposition type UTP cable 1 of the present invention is connected to the connector housing 14.

Explanation of symbols

1A, 1B, 1C
Deformed interposition type UTP cable of the present invention 2 Conductor 3 Insulator 4 Insulated core 5 Pair of twisted wires 6 Both ends V-branch type interposition, both ends U-branch type interposition, both ends U-shaped branch type interposition 6a Central connection 6b Central connection 6c Center connection 6A Both ends V-branch 6B Both ends U-branch 6C Both ends U-shaped branch 7 Outer jacket
14 Connector housing
17 Cable terminal of the present invention
21 Separation hole
22 Separation groove
23 Bifurcated groove A Guide wall provided in the center B Guide wall provided at both ends C Locking part D Average separation distance between the pair F Parallel alignment part 1 'Conventional cross-shaped UTP cable 6' Cross interstitial D 'pair Mean distance between

Claims (5)

In a UTP cable in which four twisted wires are partitioned by deformed interpositions, in order to make the separating distance between the pair 2 and the pair 3 longer than the separating distance between the pair 1 and the pair 4, the deformed intervening having different lengths is provided. Use of a deformed type interposition characterized by having a structure in which interference between two and three pairs (crosstalk, crosstalk) is reduced compared to that of pairing one and four and having a jacket on the outside Type UTP cable. When a plurality of twisted cables of claim 1 are bundled, an average separation distance between a plurality of cable pairs is increased, so that the interference between the cable pairs is reduced. Interventional UTP cable. The deformed interposition type UTP cable according to claim 1, wherein the deformed interposition is a V-branched interposition at both ends. The deformed interposition type UTP cable according to claim 1, wherein the odd shape interposition comprises a both-end U branch type interposition. The deformed interposition type UTP cable according to claim 1, wherein the deformed interposition of claim 1 is a U-shaped branching interposition at both ends.

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