| 摘要 |
PROBLEM TO BE SOLVED: To improve work efficiency of fixation to a frame of a hub for a bicycle with connecting structure allowing easy connection. SOLUTION: A fixing mechanism 43 of an internal transmission hub 30 is provided with a nut member 57, a whirl stop member 58, and a connection part 59. The nut member 57 has a first abutting surface 57a, and can be screwed with a hub shaft 42 of the internal transmission hub 30. The whirl stop member 58 includes a cylindrical main body part 58b having a second abutting surface 58a that can abut on the first abutting surface 57a, a first regulation part 58c for regulating relative rotation to the frame 12 of the bicycle, and a second regulation part 58d for regulating relative rotation to the hub shaft 42, and is attachable to the hub shaft 42. The connection part 59 includes a locking member 68 attached to the nut member 57 to rotatably connect the nut member 57 and the whirl stop member 58. COPYRIGHT: (C)2007,JPO&INPIT
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