公开(公告)号：US20170137085A1

公开(公告)日：2017-05-18

申请号：US15334406

申请日：2016-10-26

Applicant: Shimano Inc.

Inventor： Takashi YAMAMOTO

IPC: B62M6/55 ,  B62M6/45 ,  F16H37/06 ,  B62M11/18 ,  F16H3/66

CPC classification number: B62M6/55 ,  B62M6/45 ,  B62M11/145 ,  B62M11/18 ,  F16H3/666 ,  F16H37/065 ,  F16H2200/2007 ,  F16H2200/2069

Abstract: A bicycle drive unit basically has a transmission, a motor and a resultant force member. The motor is configured to transmit rotation to the transmission, and a resultant force member to which rotation from the transmission and from the manual drive force is transmitted. The transmission has a first sun gear, a second sun gear, a first ring gear, a second ring gear, a first planetary gear, a second planetary gear and a third planetary gear. The first, second and third planetary gears are separate individual gears. The first planetary gear is engaged with the first sun gear and the first ring gear. The second planetary gear is engaged with the second sun gear and the third planetary gear. The third planetary gear is engaged with the second planetary gear and the second ring gear.