| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a two-wheeled vehicle which can effectively absorb an external force acting on a vehicle body while suppressing the vehicle body from swinging widely when pedalling a bicycle. <P>SOLUTION: In the two-wheeled vehicle, a torsional stiffness of a main tube 11A is increased when a cranking torsional moment acts on the vehicle body, while the torsional stiffness of the main tube 11A is decreased when a disturbance torsional moment acts on the vehicle body, thereby effectively absorbing the external force acting on the vehicle body while suppressing the vehicle body from swinging widely when pedalling the bicycle. <P>COPYRIGHT: (C)2013,JPO&INPIT |
