| 摘要 |
<p>A vehicle wheel comprises an outer circular part or rim (2) adapted to support a tire (P) and has at least one circumferential inner cavity (8), a central hub (3) which is coaxial to the circular part, and members (4) of the wire-spoke or solid-spoke type for mutually connecting the outer part and the hub. The circumferential inner cavity (8) is uniformly filled with a structural material (9) which has a relatively high compression and shearing elasticity modulus and a relatively low density and is suitable to adhere completely to the inner surface of the circumferential cavity (8). Filling (9) can be performed with a foaming injectable or reinforced polymeric material. The outer circular part (2) can be made of a metallic or reinforced polymeric material. The composite structure allows to increase specific resistance to radial loads, to reduce the number and tension of the connecting members, the weight of the wheel and its aerodynamic drag.</p> |
