| 摘要 |
<p>A bicycle rear derailleur jockey pulley assembly includes a cogwheel (1) supported on a bearing (3). The bearing (3) includes an outer ring (5) supporting the cogwheel (1), an inner ring (4) disposed radially inwardly of the outer ring (5), and a plurality of rolling members (6, 11) disposed between the inner ring (4) and the outer ring (5). The outer ring (5) is capable of movement relative to the inner ring (4) in an axial direction so that the jockey pulley may follow the axial movement of the chain after shifting. <IMAGE></p> |
