Patent ID: 7828110

Claim:
A steering device adapted to use in a four-wheeled vehicle, comprising a steering wheel, a steering column, a lower column, and a steering gear box, the lower column having opposite ends that are respectively coupled via universal joints to the steering column and the steering gear box, the steering gear box comprising a housing in which a rack and a screw rod are accommodated, the rack having an end coupled via a spherical joint to a tie rod, which is jointed to a front wheel of the vehicle, the spherical joint comprising an anti-loosening washer, wherein the steering device comprises a constraint mechanism comprising a step formed on an inside surface of the housing and a sleeve fit over the step, the sleeve being engageable with the anti-loosening washer of the spherical joint to form a constraint to an inward travel of the spherical joint of the tie rod into the housing so as to set a constraint to steering angle of the front wheel, and wherein the sleeve comprises and end rim positioned against the step inside the housing and engageable with the anti-loosening washer and the sleeve is releasably fit over the step so that the sleeve is replaced by a replacement sleeve having an end rim of different thickness.