Wheel gliding control structure

Abstract

The invention herein relates to a kind of structure improving the control of gliding of a wheel which mainly consists in two left-right symmetrical shells and a fixed axle, of which, an internal side of both parts of the shell is a U-shaped hollow, with a groove running lengthways in its center. The fixed axle has the shape of a square rod, on surfaces of which are symmetrical oval cogs, which enables the shell to stick in the central empty space of the wheel after assembling the fixed axle with the two hollows of the shell; when the wheel is moving, the cogs of the fixed axle gliding along the grooves of the shell enables the left/right movements of the wheel thus increasing the flexibility.

1 . A gliding control structure for wheels comprising: 
 two shells, each internal side wherein is a U-shaped hollow, in a center of each hollow there is a groove running lengthways thereof, a middle part surrounding outside of the shells presents a protruding ring;    one fixed axle having a hole, being enclosed in between the two shells, on surfaces of the fixed axle there are symmetrical oval cogs;    by assembling the two shells with the fixed axle and inserting into a central hole of the wheel, to enable the wheel moving, the cogs of the fixed axle whereby moving along the grooves of the shells and further controlling the turns to the right and to the left.