US 12,131,847 B2
Multicore cable
Takumi Ooshima, Tochigi (JP); Masayuki Ishikawa, Tochigi (JP); and Jo Yagisawa, Tochigi (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/756,435
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Dec. 6, 2019, PCT No. PCT/JP2019/047948
§ 371(c)(1), (2) Date May 25, 2022,
PCT Pub. No. WO2021/111634, PCT Pub. Date Jun. 10, 2021.
Prior Publication US 2022/0415539 A1, Dec. 29, 2022
Int. Cl. H01B 9/00 (2006.01); H01B 7/04 (2006.01); H01B 11/02 (2006.01)
CPC H01B 9/003 (2013.01) [H01B 7/04 (2013.01); H01B 11/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A multicore cable comprising:
a plurality of power lines; and
an outer jacket covering the plurality of power lines, wherein
the power lines include one first conductor disposed at a center, and a plurality of second conductors disposed on an outer periphery of the first conductor, that are twisted together,
the first conductor includes 10 or more and 100 or less twisted first element wires,
the second conductor includes 10 or more and 100 or less twisted second element wires,
a direction of lay of the first element wires of the first conductor, a direction of lay of the second element wires of the second conductor, and a direction of lay of the first conductor and the second conductors of the power line are the same,
a length of lay of the first element wires and a length of lay of the second element wires are greater than or equal to 8 mm and less than or equal to 22 mm, and
the length of lay of the second element wires is greater than or equal to 1.1 times the length of lay of the first element wires, and less than or equal to 1.4 times the length of lay of the first element wires.
 
7. A multicore cable comprising:
a plurality of power lines; and
an outer jacket covering the plurality of power lines, wherein
the power lines include one first conductor disposed at a center, and a plurality of second conductors disposed on an outer periphery of and in contact with the first conductor, that are twisted together,
the first conductor includes 10 or more and 100 or less twisted first element wires,
the second conductor includes 10 or more and 100 or less twisted second element wires,
a direction of lay of the first element wires of the first conductor, a direction of lay of the second element wires of the second conductor, and a direction of lay of the first conductor and the second conductors of the power line are the same,
a length of lay of the first element wires and a length of lay of the second element wires are greater than or equal to 8 mm and less than or equal to 22 mm, and
the length of lay of the first element wires is shorter than the length of lay of the second element wires.