| 摘要 |
The invention relates to a rim (5) for a bicycle wheel comprising a body (20) with a substantially annular extension having a radially outer portion (22) shaped for coupling with a tyre. Such a radially outer portion (22) comprises a hole (39) for an inflation valve. The radially outer portion (22) further comprises, at the hole (39) and/or in an area proximal to the hole (39), at least one cross section having a different shape to that at an area distal from said hole, so as to form at least one second surface discontinuity (35) along the annular extension of said radially outer portion (22). Such a second discontinuity (35) makes it easier to assemble to wheel and allows an optimal coupling to be made between rim (5), inflation valve and tyre, in the case of a tubeless wheel, and between rim (5), air chamber and tyre, in the case of a wheel with an air chamber. |
