公开(公告)号：US20140221151A1

公开(公告)日：2014-08-07

申请号：US13761516

申请日：2013-02-07

Applicant: SHIMANO INC.

Inventor： Tetsuya HINO ,  Akihiko SHOGE ,  Minoru ITO

IPC: B60W20/00

CPC classification number: B60W20/40 ,  B62M6/55

Abstract: A bicycle drive unit includes a motor, a crank axle, a torque combining mechanism, and a clutch mechanism. The crank axle is rotatable about a first rotational axis. The torque combining mechanism is operatively coupled to the motor and the crank axle. The torque combining mechanism has a sprocket mounting portion that is configured to be operatively attached to a sprocket such that the sprocket rotates about a second rotational axis of the sprocket in a first direction as the crank axle rotates about the first rotational axis in the first direction. The clutch mechanism is operatively disposed between the crank axle and the sprocket. The clutch mechanism is configured to rotate the sprocket about the second rotational axis in a second direction as the crank axle rotates about the first rotational axis in the second direction. The second direction is opposite the first direction.

Abstract translation: 自行车驱动单元包括马达，曲柄轴，扭矩组合机构和离合器机构。 曲柄轴可绕第一旋转轴线旋转。 扭矩组合机构可操作地联接到电动机和曲柄轴。 扭矩组合机构具有链轮安装部分，其构造成可操作地附接到链轮，使得当曲柄轴沿第一方向围绕第一旋转轴线旋转时，链轮沿第一方向围绕链轮的第二旋转轴线旋转 。 离合器机构可操作地设置在曲柄轴和链轮之间。 离合器机构构造成当曲柄轴沿第二方向围绕第一旋转轴线旋转时沿第二方向围绕第二旋转轴线旋转链轮。 第二个方向与第一个方向相反。