| 摘要 |
A journal includes a lower cap engaged on a head tube, a bearing engaged on the lower cap, a ring engaged on the bearing and having a tapered surface formed in an inner peripheral portion, a upper cap having an annular groove formed in the lower portion, a tapered surface formed in the annular groove of the upper cap and engaged with the tapered surface of the ring. The upper cap applies a downward and radially outward force against the ring when the upper cap moves toward the lower cap such that lower cap, the bearing, the ring and the upper cap can be stably retained in place.
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