| 摘要 |
PROBLEM TO BE SOLVED: To provide a propeller shaft having improved collision safety performance and high bending strength. SOLUTION: The propeller shaft 1 comprises a cylindrical member 30 having a cylindrical internal space 31 and a yoke member 20 having first and second serration parts 21, 22 as a plurality of pressed-in parts in contact with the cylindrical member 30 pressed in the internal space 31. The first and second pressed-in parts 21, 22 are isolated from each other along the pressed-in direction shown by an arrowmark 23. A total (a) of the lengths of the first and second serration parts 21, 22 is 1/2 or less of an outer diameter D of each of the first and second serration parts 21, 22. COPYRIGHT: (C)2005,JPO&NCIPI
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