Cable

Patent metadata

Field	Value
Publication number	US-11569005-B2
Application number	US-202117460581-A
Country	US
Kind code	B2
Filing date	Aug 30, 2021
Priority date	Sep 7, 2020
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A cable includes a cable core including a linear filler, and a plurality of core wires for signal transmission, a shield layer covering around the cable core, and a sheath covering around the shield layer. The filler includes a first filler provided at a cable center, and a plurality of second fillers provided around the first filler to form a cross-shape with the first filler in a cross-section perpendicular to a cable longitudinal direction. The cable core is configured in such a manner that the plurality of core wires and the plurality of second fillers are spirally twisted around the first filler to be alternately arranged in a circumferential direction.

First claim

What is claimed is:

1. A cable, comprising:
a cable core comprising a linear filler, and a plurality of core wires for signal transmission;
a shield layer covering around the cable core; and
a sheath covering around the shield layer,
wherein the filler comprises a first filler provided at a cable center, and a plurality of second fillers provided around the first filler to form a cross-shape with the first filler in a cross-section perpendicular to a cable longitudinal direction,
wherein the cable core is configured in such a manner that the plurality of core wires and the plurality of second fillers are spirally twisted around the first filler to be alternately arranged in a circumferential direction,
wherein an outer diameter of the first filler is greater than an outer diameter of a second filler of the plurality of second fillers,
wherein the second fillers are arranged at a position for distancing the core wires, which are adjacent to each other in a circumferential direction, from each other, while the second fillers are brought contact with the adjacent core wires, respectively, and
wherein the core wires and the second fillers are alternately arranged in the circumferential direction so that the first filler and the second fillers are integrated to provide an approximately cross-shaped filler as a whole.

2. The cable according to claim 1 , wherein the plurality of second fillers is provided to be attachable to and detachable from the first filler when the cable core is bent.

3. The cable according to claim 1 , wherein an outer diameter of the second filler of the plurality of second fillers is 0.8 times or more and 1.0 times or less an outer diameter of the core wire.

4. The cable according to claim 1 , wherein a tensile strength of the first filler is higher than a tensile strength of the second filler of the plurality of second fillers.

5. The cable according to claim 1 , wherein the core wire comprise a twisted pair wire.

6. The cable according to claim 1 , wherein a first core wire of the plurality of cores wires is offset 90 degrees from another of the plurality of core wires, and
wherein a first second filler of the plurality of second fillers is offset 90 degrees from another of the plurality of second fillers.

7. The cable according to claim 1 , wherein, with respect to a center of the first filler, a first core wire of the plurality of core wires is offset 45 degrees from a first second filler of the plurality of second fillers.

8. The cable according to claim 1 , wherein an outer diameter of the first filler is 1.5 to 1.7 times an outer diameter of the second filler of the plurality of second fillers.

9. The cable according to claim 1 , an outer diameter of the second filler of the plurality of second fillers is approximately the same as an outer diameter of the core wires.

10. The cable according to claim 1 , wherein a size of the second filler of the plurality of second fillers is set based on suppressing pair-to-pair crosstalk of the core wires.

Assignees

• Hitachi Metals Ltd

Inventors

• Moriyama Masashi
• Huang Detian
• Tsukamoto Yoshinori
• Kobayashi Masanori

Classifications

• H01B7/1895 Primary

  Internal space filling-up means · CPC title

• H01B7/041 Primary

  attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables · CPC title

• H01B11/08

  Screens specially adapted for reducing cross-talk · CPC title

• H01B7/1875

  Multi-layer sheaths · CPC title

• H01B11/06

  with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens · CPC title