| 摘要 |
<p>The system (18) includes a handlebar (20) having a pair of opposed end portions (30, 32) and a central incurved portion (34) extending between the end portions (30, 32). A tubular insert (90) extends within the handlebar (20) between the opposing end portions (30, 32), and a curved crossbar (36) spans the incurved portion (34). The curved crossbar (36) flexes to minimize the stress between the crossbar (36) and the handlebar (20) during repeated impacts. This flexing improves the endurance of the handlebar system (18) when it is subjected to repeated stresses. Moreover, the insert (90) reinforces the handlebar (20), which further increases the handlebar system's resistance to failure due to repeated stresses. The handlebar system (18) may also include multi layer handgrips (50) that include an inner layer (52), an intermediate layer (54) and an outer layer (56). The intermediate layer (54) is more rigid than the inner (52) and outer (56) layers so that the outer layer (56) is isolated from the inner layer (52) and subjected to less vibrations. The end portions (30, 32) of the handlebar (20) may have a reduced diameter to facilitate the use of such multi layer handgrips without increasing the outer diameter of the handgrips.</p> |
