Patent ID: 8393420
Filing Date: 2013-03-12
Classification: B62B,B62D

Abstract:
1. A driving system for a stair-climbing vehicle that is installed on a wheel frame of the vehicle to allow the vehicle to go over obstacles and ascend stairs, the driving system comprising: a power transmission unit connected to a main shaft of a power generation unit installed on the wheel frame, and includes a sun gear fixed on the main shaft of the power generation unit, a plurality of planet gears engaged with an outer circumference of the sun gear, and a ring gear engaged with the planet gears; a plurality of driven units engaged with the power transmission unit and supporting wheels rotating by rotational force of the power transmission unit; a carrier to which the power transmission unit and each of the driven units are operationally fixed and which goes over the obstacles by rotating when the driven units stop due to the obstacles; and a wheel shift unit which, when the vehicle having the wheels runs on an even road, shifts one of at least two of the wheels contacting the even road away from the even road.