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Title:
COOLING DEVICE OF SLIP RING FOR ROTARY ELECTRIC MACHINE
Document Type and Number:
Japanese Patent JP2015159655
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a cooling device of a slip ring which enables liquid cooling of slide parts while preventing a coolant from adhering to the slide parts of conductive rings and conductive brushes.SOLUTION: A rotary shaft 30 of a rotary electric machine is inserted through conductive rings 36A to 36C. In the rotary shaft 30, a first coolant passage 50 extending in an axial direction is formed and branch paths 52 allowing the first coolant passage 50 and an outer peripheral surface to communicate with each other are also formed. Second coolant passages 56 are formed in the conductive rings 36A to 36C. Further, a cooling device 10 includes connection pipes 54, each of which connects the branch path 52 with the second coolant passage 56.

Inventors:
ASAUMI SHU
WATANABE TAKAO
MURAKAMI ARATA
TOMINAGA SATOSHI
KAMITSUJI KIYOSHI
YUMOTO SHUJI
FUJIWARA HIROFUMI
Application Number:
JP2014032935A
Publication Date:
September 03, 2015
Filing Date:
February 24, 2014
Export Citation:
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Assignee:
TOYOTA CENTRAL R&D LABS INC
TOYOTA MOTOR CORP
TOYOTA INDUSTRIES CORP
International Classes:
H02K9/28; H01R39/00; H01R39/34; H02K9/19
Attorney, Agent or Firm:
特許業務法人YKI国際特許事務所