公开(公告)号：US20210031880A1

公开(公告)日：2021-02-04

申请号：US16529219

申请日：2019-08-01

Applicant: WEN-KUEI LIU ,  CHAO-HSUAN LIU ,  YU-CHUN LIU ,  YI-SHAN LIU

Inventor： WEN-KUEI LIU ,  CHAO-HSUAN LIU ,  YU-CHUN LIU ,  YI-SHAN LIU

IPC: B62M11/06 ,  B62M9/124

Abstract: A transmission device for a bicycle includes a housing, a mandrel, an assembling member, a transmission assembly, a derailleur assembly and a clutch assembly. The mandrel is rotatably disposed on the housing and extends along an axial direction. The assembling member has a driving gear. The transmission assembly is rotatably disposed on the housing and engaged with the driving gear. The derailleur assembly includes a first derailleur gear and a second derailleur gear. The transmission assembly is engaged with the first derailleur gear and the second derailleur gear. The clutch assembly includes a clutch member.