BALL DRIVING UNIT AND BALL DRIVING MOVEMENT DEVICE INCLUDING SAME

The present invention provides a ball driving unit and a ball driving movement device including the ball driving unit. The ball driving unit comprises: a driving member which has a predetermined volume of balls; a frame which accommodates the driving member therein, is configured to expose the upper portion and the lower portion of the driving member, and includes a ball roller at a portion coming in contact with the driving member such that the driving member keeps a rotatable state; a driving force transfer unit which includes two or more driving rollers including multiple bearings having a rotation direction perpendicular to the rotation direction of the driving rollers at a portion coming in contact with the driving member, wherein the driving rollers are rollers rotating the driving member by rotating while coming in contact with the exposed upper portion of the driving member; and a driving force supply unit which supplies rotation force independently to each driving roller of the ...