| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a bicycle gear crank capable of easily and adequately changing the fitting position of a gear plate to a crank arm in the circumferential direction. <P>SOLUTION: The bicycle gear crank A includes a crank arm 1 having a boss part 11a for fitting a crank shaft thereto at a base end thereof, an annular intermediate member 2 to be fitted to an outer circumference of the boss part 11a in a relatively non-rotatable manner, a fitting member 3 to be supported by the intermediate member 2 in a relatively non-rotatable manner on an outer side of the intermediate member 2, gear plates 4, 5 to be fixed to an outer side of the fitting member 3, and a position adjusting means consisting of a spline fitting (an outer circumferential spline 23a and an inner circumferential spline 31a) capable of changing the relative position between the intermediate member 2 and the fitting member 3 in the circumferential direction. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
