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Multi-core cable

A multi-core cable and cable technology, which is applied in the direction of communication cables, cables, cable/conductor manufacturing, etc., can solve the problems of not mentioning the winding direction of insulating tape or metal foil tape, not mentioning multi-core cables, etc., and achieve reduction The effect of small incidence rate, reduced skew, and reduced difference

Inactive Publication Date: 2011-07-06
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent Document 1 mentions neither the direction in which the multi-core cables are twisted together nor the winding direction of the insulating tape or metal foil tape

Method used

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  • Multi-core cable
  • Multi-core cable
  • Multi-core cable

Examples

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Embodiment Construction

[0012] Hereinafter, preferred embodiments of the present invention will be described based on the accompanying drawings. The drawings are provided for the purpose of explaining the embodiments and are not intended to limit the scope of the invention. In the drawings, the same symbols denote the same elements, so that repeated explanations may be omitted. The dimensional ratios in the drawings are not always accurate.

[0013] In the multi-core cable described in Patent Document 1, a twisted-pair cable is used as a core cable, and the cross-sectional shape of a core unit formed of the core cable is close to a circle. Thus, the metal foil tape can be wound with relatively uniform force. However, when two signal conductors arranged in parallel are used as a core cable without being twisted to reduce the incidence of skew, the core unit formed by the core cable will have a profile that changes in the longitudinal direction. In this case, when the insulating tape and the metal f...

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Abstract

The present invention provides a multi-core cable in which skew occurs less and attenuation characteristics of all core cables are uniform, comprising: a core unit; an insulation tape spirally wrapped around the outer circumference of the core unit; and a metal coated resin tape wrapped over the insulation tape, wherein a plurality of core cables each consisting of two insulated wires arranged in parallel are stranded together to form the core unit, and wherein the metal coated resin tape is wrapped in the same direction as the stranding direction of the core cables.

Description

technical field [0001] The invention relates to multi-core cables in which a plurality of twin cables are shielded together by an integral shielding tape. Background technique [0002] Twinax cables consisting of two electrically insulated signal conductors are known as signal lines for the transmission of high-speed digital signals. The method of transmitting signals using a pair of cables is called differential signaling. This method causes the signal to be output twice at the receiving end because signals whose phases are 180 degrees out of phase each are simultaneously input into a pair of signal conductors and transmitted, and the difference of the signals is read at the receiving end. In addition, this transmission exhibits noise canceling characteristics, since a given noise is applied equally to the pair of signal conductors during signal transmission, so that the noises cancel each other out when output as a differential signal at the receiving end . Twinax cable...

Claims

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Application Information

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IPC IPC(8): H01B11/10H01B3/00
CPCH01B11/1025H01B13/02H01B11/002H01P3/02
Inventor 松田基轻部胜美
Owner SUMITOMO ELECTRIC IND LTD