| 摘要 |
<p>PROBLEM TO BE SOLVED: To make the wall thickness of a rim thinner and achieve desired light weight by optimally distributing tension in fastening spokes to a rim regardless of a symmetrical rim or an asymmetrical rim.SOLUTION: A rim 10 for bicycle comprises: a radial direction outer portion 12 constituted so as to be connected to a tire for a bicycle; and a radial direction inner portion 14 having a plurality of installing holes 16 for each spoke. The radial direction inner portion 14 includes sidewalls 14a, 14b on both sides and a bottom wall 14c on which the plurality of holes 16 are formed. The radial direction inner portion 14 has first curvature discontinuous portions 14d, 14e which divide at least one sidewall 14a, 14b from the bottom wall 14c. The bottom wall 14c is configured so as to house each insert 18 with a hole, which holds a spoke head, at least in a part of the holes 16.</p> |
