| 摘要 |
PROBLEM TO BE SOLVED: To enable transportation and movement in a stable state by a non-powered hand-push carriage cart.SOLUTION: Casters 2 are pivotally supported downward at least at four corners of an undersurface of a cart body 1 having a rectangular plane. Auxiliary wheels 4, which are not brought into contact with ground in the ordinary case where all the casters 2 at the four corners are brought into contact with the ground, are provided for fall prevention in intermediate locations between the casters 2, arranged in front and rear positions, among the casters 2 at the four corners and on the outside with respect to a line connecting ground contact points of the front and rear casters. |
