| 摘要 |
A stem fastening structure includes a cap, a bolt and a packing member. The cap abuts against a top of a stem and corresponds to a top edge of a middle hole of a front fork. The bolt passes through the cap and penetrates into the middle hole. The packing member has a loop portion for the bolt screwing therethrough. Two sides of the loop portion extend upward and diverge from the other to form two bottom cone portions. Two positioning portions respectively and vertically extend upward from the two positioning portioning. Two top cone portions respectively extend upward from the two positioning portions, and approach the other. A top of each top cone portions abuts against the cap. Thereby, when the bolt drives the loop portion to move toward the cap, the positioning portions abut against the middle hole, so that the stem is fastened to the front fork.
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