Patent ID: 7357418

Claim:
A steering shaft support structure for a vehicle for uneven ground operation in which front wheels and rear wheels are suspended from a body frame via a suspension and the front wheels can be steered with a handle via a steering shaft mounted rotatably on said body frame, said steering shaft support structure comprising: left and right pipes composing said body frame, each being formed in an L-shape, and each being provided with an arcuate portion at an upper-most portion thereof, a cross beam being placed in spanning relation between the upper-most portions of the left and right pipes, the cross beam having a first arcuate portion formed on a center portion thereof; a front holder having a second arcuate portion formed on a center portion thereof; and said first and second arcuate portions interlockingly support the steering shaft on the body frame in a rotatable manner, the cross beam including: an arc forming portion formed with the first arcuate portion at the center portion thereof and flat portions at both ends thereof with a protruding wall formed to protrude rearwardly from the upper edge of the first arcuate portion, left and right front mount portions formed, respectively, at lower portions of the flat portions for mounting the cross beam on the respective left and right pipes composing the body frame, and side mount portions bent rearwardly from outer lateral edges of the flat portions and mounted on the body frame.