公开(公告)号：US20170274962A1

公开(公告)日：2017-09-28

申请号：US15076679

申请日：2016-03-22

Applicant: Shimano Inc.

Inventor： Atsuhiro EMURA ,  Kenkichi INOUE ,  Kazuya KUWAYAMA ,  Kohei OBUCHI ,  Mineho MASUDA ,  Kento MITSUYASU

IPC: B62M9/135

CPC classification number: B62M9/135 ,  B62K25/286

Abstract: A bicycle front derailleur including a chain guide; a linkage assembly; and a mounting bracket configured to mount the chain guide to a bicycle frame such that the chain guide is movable with respect to the mounting bracket. The mounting bracket includes at least one fixed portion adapted to receive a fastener to fix the fixed portion so that an axis of the fastener extends toward a bottom bracket hangar of the bicycle frame when the fixed portion is fixed to the bicycle frame via the fastener. The axis of the fastener is generally vertical.

公开(公告)号：US20180265170A1

公开(公告)日：2018-09-20

申请号：US15897507

申请日：2018-02-15

Applicant: Shimano Inc.

Inventor： Kenkichi INOUE ,  Kohei OBUCHI ,  Mineho MASUDA

IPC: B62M9/135 ,  B62M9/1342 ,  B62M9/136 ,  B62M25/02

CPC classification number: B62M9/135 ,  B62K19/34 ,  B62M9/1342 ,  B62M9/136 ,  B62M25/02

Abstract: A bicycle front derailleur is provided that can be easily coupled to a bicycle frame. The bicycle front derailleur includes a base member, a chain guide and a link mechanism. The base member is configured to be coupled to a bottom bracket hanger of the bicycle frame. The chain guide is configured to guide a chain. The link mechanism connects the chain guide to the base member to move the chain guide between a retracted position and an extended position. The base member includes a recess configured to accommodate a part of the chain guide in a state where the chain guide is located at the retracted position.