| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent generation of a car body lateral turning accident at the time of steering operation, by providing an auxiliary arm toward rearward from a support arm of a front wheel, and providing an auxiliary wheel turnably in the same direction to that of the front wheel and in a position floated from the ground surface, in an intermediate position between the front/rear wheels in a tip end of this auxiliary arm. SOLUTION: One front wheel 2 and two rear wheels 4 are mounted in a car body frame 3, a handle lever 9 and a handle 6 are provided toward upward from the front wheel 2. The front wheel 2 is journalled to a support arm 7, the handle 6 is operated by a rider, so as to turn a car body. Here, an auxiliary arm 8 is secured to the support arm 7, an auxiliary wheel 1 is pivotally mounted in an end part of this auxiliary arm 8. This auxiliary wheel 1 is made movable in also right/left horizontal directions with steering of the front wheel 2, the wheel 1 is grounded when a car body is tilted in a direction laterally turning, so as to prevent the car body from laterally turning. The auxiliary wheel 1 is provided, so as to improve performance riding across a step difference of the rear wheel 4 at straight advancing running time.</p> |
