| 摘要 |
A headset for use in the frame body of a bicycle or tricycle is constructed to include a ball bearing, an annular cap covered on the ball bearing, and an annular tightening member mounted in between the cap and the ball bearing. The tightening member has a top coupling flange forced into engagement with an inside mounting groove of the cap and a bottom hooked retaining portion hooked on a bottom edge of the ball bearing, keeping the ball bearing and the cap and the tightening member secured together for easy installation.
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