Abstract: A four-wheel drive unit for a toy vehicle, comprising a windup spring drive mechanism including a first axle, a gear mechanism having a second axle and a link shaft which rotatably connects the first axle to the second axle via link gears so that the gear mechanism may pivot around the axis of the link shaft with reference to the drive mechanism, and the first and the second axles may be rotated in the same direction.
Abstract: A toy vehicle having a chassis and interchangeable wheel drive units detachably mounted in container portions of the chassis. The wheel drive units has a unit body and a pair of wheels rotatably mounted to the unit body via a rotary shaft.
Abstract: A toy automobile having selective drive wheels comprising a body, a chassis and pairs of front and rear wheels, in which either a front wheel windup spring drive unit or a freewheel holder along with a front axle is detachably arranged in a front space of the chassis, and in which either a rear wheel windup spring drive unit or a freewheel holder along with a rear axle is detachably arranged in a rear space of the chassis, whereby a selection between front wheel drive, rear wheel drive, four-wheel drive or four-freewheel is made possible.
Abstract: A reconfigurable toy assembly is disclosed which is adapted to be reversibly transformed to provide two kinds of configurations entirely different from each other between a first position and a second position by only swinging operation. Typically, the reconfigurable toy assembly is constructed in such a manner to provide a vehicle form by folding the toy assembly and a robotic humanoid form by unfolding.