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1. (WO2018043092) AUTOMATIC TRANSMISSION

Pub. No.:    WO/2018/043092    International Application No.:    PCT/JP2017/029109
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Fri Aug 11 01:59:59 CEST 2017
IPC: F16D 25/12
F16D 25/0638
Applicants: AISIN AW CO.,LTD.
アイシン・エィ・ダブリュ株式会社
Inventors: TERADA,Keisuke
寺田 圭佑
KATSUYA,Masaru
勝谷 賢
FUKUI,Takao
福井 孝夫
Title: AUTOMATIC TRANSMISSION
Abstract:
This automatic transmission is provided with: a hydraulic control device; a plurality of friction engagement elements; a plurality of hydraulic servos (20); a rotating shaft (7B) capable of transmitting power; a hole (40) which is formed within the rotating shaft (7B) so as to extend axially from the rear end of the rotating shaft (7B) and into which lubricating oil is supplied at the rear end from the hydraulic control device; a first through-hole (41) extending between the hole (40) and the outside radially of the rotating shaft (7B) and supplying lubricating oil to a first cancellation oil chamber (27) of a hydraulic servo (20); and a stepped section (43) formed in the hole (40) on the opposite side of the first through-hole (41) from the rear end and having a smaller diameter than the rear end.