| 摘要 |
A collapsible bicycle frame includes a main frame having a front frame and a rear frame. A rear end of the front frame and a front end of the rear frame are pivotally connected. The rear end of the front frame includes a first engaging mechanism while the front end of the rear frame includes a second engaging mechanism for securely engaging with the first engaging mechanism when the front frame and the rear frame are in an extended status, and the first engaging mechanism and the second engaging mechanism disengages from each other when collapsing the bicycle.
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