| 摘要 |
A scooter includes a footboard, a steering column having an upper end connected to a handlebar and a lower end connected to a front fork, a head-tube frame assembly having a head tube coupled to the steering column and a frame assembly coupled to the footboard, a front ball bearing wheel rotatably mounted to the front fork, and a rear ball bearing wheel rotatably mounted to a rear fork the footboard. The scooter further includes a folding mechanism in the head-tube frame assembly for folding up the scooter.
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