公开(公告)号：US20140144285A1

公开(公告)日：2014-05-29

申请号：US14167105

申请日：2014-01-29

Applicant: Shimano Inc.

Inventor： Masahiro YAMANAKA ,  Yusuke NISHIMOTO ,  Shingo SHIRAISHI ,  Akinobu SUGIMOTO

IPC: B62M3/00

CPC classification number: B62M3/003 ,  B62M3/00 ,  Y10T74/2164

Abstract: A bicycle crank axle assembly has first and second crank arms that are attached to opposite ends of a crank axle. The ends of the crank axle are non-rotatably disposed in axle mounting openings of the first and second crank arms. A first end of the crank axle has at least one axially extending first spline that protrudes radially outward from an outer peripheral surface of its middle body portion. The at least one axially extending first spline non-rotatably couples the crank axle to the first crank arm and prevents outward axial movement of the first crank arm away from the second crank arm. The second end portion of the crank axle has at least one recess that extend radially inward with respect to the outer peripheral surface of the middle body portion to form at least one axially extending second spline.

Abstract translation: 自行车曲柄轴组件具有附接到曲轴的相对端的第一和第二曲柄臂。 曲柄轴的端部不可旋转地设置在第一和第二曲柄臂的轴安装开口中。 曲柄轴的第一端具有从其中间主体部分的外周表面径向向外突出的至少一个轴向延伸的第一花键。 所述至少一个轴向延伸的第一花键不可旋转地将曲柄轴联接到第一曲柄臂，并且防止第一曲柄臂向外轴向移动远离第二曲柄臂。 曲柄轴的第二端部具有至少一个相对于中间主体部分的外周表面径向向内延伸的凹部，以形成至少一个轴向延伸的第二花键。