| 摘要 |
A bicycle is disclosed. A direction control device thereof comprises a handlebar, a steering stem, two adjusting stems, and a quick switch device. The steering stem is connected to the main frame and comprises a longitudinal rod and a horizontal rod. Each adjusting stem comprises an adjusting main body, a first clamping portion, and a second clamping portion. Both ends of the horizontal rod are clamped by each first clamping portion; the handlebar is clamped by each second clamping portion. There are two clamping states of the first and second clamping portions: a fastening state and a non-fastening state. The quick switch device is coupled to each adjusting stem and controls the clamping state of each first clamping portion and each second clamping portion.
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