Cleaner

Abstract

A cleaner may include: a housing; and a driving device configured to move the housing, the driving device including: a driving wheel module including a driving wheel that is movable relative to the housing in a first direction toward an inside of the housing and in a second direction toward and outside of the housing; a lifting wheel module including a lifting wheel that is movable relative to the housing in the first and second direction; and a moving module operable to: in a first mode, move the lifting wheel in the first direction toward the inside of the housing, and move the driving wheel in the second direction toward the outside of the housing, and in a second mode, move the lifting wheel in the second direction toward the outside of the housing, and move the driving wheel in the first direction toward the inside of the housing.

Dependencies are inferred from the claim text.