US 12,463,483 B2
Coil for motor, method for manufacturing coil for motor, and motor
Takeshi Ikemi, Tokyo (JP); Shinichi Isobe, Tokyo (JP); Norihito Yanagita, Tokyo (JP); Akiko Kasami, Tokyo (JP); Takashi Arai, Tokyo (JP); and Satoshi Nakatsuka, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 18/284,698
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Feb. 15, 2022, PCT No. PCT/JP2022/005859
§ 371(c)(1), (2) Date Nov. 17, 2023,
PCT Pub. No. WO2022/209370, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-063463 (JP), filed on Apr. 2, 2021.
Prior Publication US 2024/0186856 A1, Jun. 6, 2024
Int. Cl. H02K 15/02 (2025.01); H02K 3/24 (2006.01); H02K 9/22 (2006.01); H02K 15/026 (2025.01)
CPC H02K 3/24 (2013.01) [H02K 15/026 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A coil for a motor comprising:
a coil which is formed of a conductor wound around an axis; and
a plurality of cooling portions which are provided to correspond to different winding layers in the conductor, wherein
each of the cooling portions includes a primary portion protruding from the winding layer radially outward and a secondary portion extending from a tip of the primary portion toward a first side in a direction of the axis,
the primary portions are formed so that one primary portion of the primary portions is located closer to a second side in the direction of the axis than another primary portion of the primary portions, wherein a protrusion length of the one primary portion is longer than that of the another primary portion,
the secondary portions are formed so that one secondary portion of the secondary portions is joined to one of the primary portions located closer to the second side in the direction of the axis than the another primary portion, wherein said one secondary portion is positioned further outside in the radial direction with respect to the another secondary portion joined to the another primary portion, and
at least two secondary portions of the plurality of secondary portions are arranged to overlap each other at intervals in a radial direction.