PURPOSE: To extremely reduce directing turning radius, by shaping a drag rod for connecting a steering main arm and a knuckle arm in a front-rise gradient or a front-down gradient.
CONSTITUTION: A turning nose of steering main arm 12 axially supporting a base portion of a steering gear box 11 and an arm portion 6b of a L character-like knuckle arm 6 mounted to an upper portion of a front wheel bearing portion 2 centering around a king pin are connected to the steering gear box 11 by means of a drag rod 13 so that the box 11 turn in the front and rear directions by the turning operation of a steering handle 9. A turning nose of the arm portion 6b of the knuckle arm 6 is located at left and right inner sides or left and right outer sides than the king pin 3, and the turning nose of the arm portion 6b is located at higher or lower positions than the turning nose of the steering main arm 12. Thus, direction turning radius can be reduced because a front wheel at the rotating directing inside is pushed up or a front wheel at the rotating direction outside is pushed down by the vertical component of pushing power P.
MOTOMURA MASASHI
KAKIHASHI TOMIO
