| 摘要 |
PROBLEM TO BE SOLVED: To provide a tricycle having a pair of right and left front wheels and a rear wheel by which turning performance is improved by a simple and compact structure.SOLUTION: A tricycle includes: an upper arm extending right and left from a steering shaft 4 and fitted to be rotatable around the steering shaft 4; a lower arm extending right and left from the steering shaft 4 below the upper arm and fitted to be rotatable around the steering shaft 4; and a right wheel holding body 13R and a left wheel holding body respectively fitted to a right end and a left end of the upper arm and the lower arm in a rotatable manner. The upper arm and the lower arm constitute a link mechanism in cooperation with the right wheel holding body 13R and the left wheel holding body. The lower arm includes a right member 12R and a left member which are separated from each other and are arranged respectively on the right and left sides of the steering shaft 4. The length from a joint between the lower arm and the right wheel holding body 13R to a joint between the lower arm and the left wheel holding body is shorter than the corresponding length of the upper arm. |
