| 摘要 |
PROBLEM TO BE SOLVED: To improve safety in traveling by improving durability, and to improve operability in assembling. SOLUTION: In a foldaway bicycle capable of folding a frame, a connecting end part of a standing tube 16 formed with a link part of an auxiliary bar 19 is extended in a length direction, and a groove for opening to an extended free end is formed. In addition, the standing tube is provided with an engaging part capable of moving in the length direction of the standing tube and engaging with the groove of the free end of the auxiliary bar. Thereby, locking is performed completely and the frame does not bend unexpectedly in traveling.
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