| 摘要 |
<p>A wheel (10) comprises a hub (12), a rim (14) and a plurality of resilient spokes arranged to define pairs of opposed spokes (16a,16b) spaced circumferentially around the wheel (10). The hub (12) defines an axis of rotation (A) of the wheel (10) and each spoke is connected at or towards one end to the hub (12) and at or towards its other end to the rim (14). The spokes of each pair of opposed spokes (16a,16b) are connected to the hub (12) on opposite sides of a circumferential hub line (20) that extends about an outer circumferential surface of the hub (12). Each spoke is connected to the rim (14) on a circumferential rim line (22) that extends about an inner circumferential surface of the rim (14) and is concentrically aligned with the circumferential hub line (20). The spokes of each pair of opposed spokes (16a,16b) are shaped to follow curved profiles extending towards each other as they extend towards the rim (14).</p> |
