公开(公告)号：US09475545B2

公开(公告)日：2016-10-25

申请号：US13728294

申请日：2012-12-27

申请人： Shimano Inc.

发明人： Masahiro Yamanaka ,  Yusuke Nishimoto ,  Tetsu Nonoshita ,  Yuki Watanabe

IPC分类号： B62M3/00

CPC分类号： B62M3/00 ,  Y10T74/2164

摘要： A bicycle crank arm includes a first member and a second member. The first member has a crank axle interacting portion and a first recessed part around the crank axle interacting portion. The second member is attached to the first member. The first member has a first side facing the second member and a second side opposite to the first side. The first recessed part is recessed from the second side toward the first side such that the first recessed part includes an attachment area attached to the second member on the first side.

摘要翻译： 自行车曲柄臂包括第一构件和第二构件。 第一构件具有曲柄轴相互作用部分和围绕曲柄轴相互作用部分的第一凹部。 第二个成员连接到第一个成员。 第一构件具有面向第二构件的第一侧和与第一侧相对的第二侧。 第一凹部从第二侧朝向第一侧凹入，使得第一凹部包括附接到第一侧上的第二构件的附接区域。