| 摘要 |
An adjustable bicycle handlebar stem which is based on a C-clamp enlarged adequately to accommodate a pair of half-cylindrical upper and lower adjusting members. The adjusting members are made as a hollow structure to decrease the weight of the bicycle. The upper and lower adjusting members are interlocked through the meshing of a keyway and slot. Since both adjusting members contain two symmetric eccentric curved notches to accommodate the bicycle handlebar, the position of the handlebar can be changed using the eccentric changes of the center of the adjusting members. The fore-and-aft distance and upper-and-lower angle of the handlebar can then be adjusted.
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