| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vehicle that is both stable and agile. <P>SOLUTION: A vehicle frame is provided with an engagement/disengagement operation means which is connected to two rear traveling means sides and by which a distance between two rear traveling means is shortened/widened by drawing/stretching them. Therefore, two rear traveling means are mutually drawn toward a vehicle frame side to form a single wheel shape, thereby providing traveling agility. Also, two rear traveling means are mutually openably separated from the vehicle frame, thereby a vehicle can travel stably at a low speed, and can be optionally parked. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
