| 摘要 |
A bicycle steering assembly is disclosed. The assembly has a threadless steerer tube passing through a head tube. Bearing assemblies are mounted at either end of the steerer tube. A stem assembly is fastened to the upper end of the steerer tube with an expansion bolt, which is preferably a wedge clamp, inside the bore of the steerer tube. The stem has an integral sleeve which extends over the upper end of the exterior surface of the steerer tube. The sleeve reinforces the steerer tube. The lower end of the sleeve is threaded to accept a threaded locking collar. Pre-load on the bearings can be adjusted by turning the locking collar. The stem assembly has few parts, fastens securely to the steerer tube, is robust and does not have projecting bolts which could harm a rider.
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