Patent ID: 7810591
Filing Date: 2010-10-12
Classification: B60L,B62D,Y02T

Abstract:
1. A traveling device, comprising: a plurality of wheels disposed in parallel; a vehicle main body provided between the plurality of wheels and installed with a mechanism for driving the plurality of wheels; a handle that is mounted on the vehicle main body; a first support portion located on a lower rear side of the vehicle main body; a second support portion connected to the first support portion via a first rotary shaft; a caster connected to the second support portion via a second rotary shaft; an elastic member to elastically restrain the second support portion within a predetermined range; and a stop mechanism to limit movement of the second support portion toward the plurality of wheels, wherein a perpendicular is defined as a line extending from the first rotary shaft to a ground surface, wherein, when the vehicle main body is tilted to a horizontal position: wherein, when the vehicle main body is tilted to a predetermined angle such that the position of the second rotary shaft is located on the same side of the perpendicular as the plurality of wheels: wherein, when the vehicle main body is tilted beyond the predetermined angle: wherein, when the caster comes into contact with the ground surface while the vehicle is traveling with a driver riding thereon, the second support portion is displaced from the predetermined position according to a reactive force exerted by the ground surface on the caster, such that the second rotary shaft is displaced away from the plurality of wheels.