VACUUM EQUIPPED WITH WHEELS FOR DRIVING FLATLAND AND PASSING DOOR SILLS

摘要

The present invention relates to variable wheels for a vacuum cleaner, which comprises: a circular central shaft; a plurality of spokes having a bent end portion in an arc shape and radially coupled to the central shaft; an elastic unit disposed at the end portion of the spokes; and a wheel bar connected to the elastic unit to extend the end portion of the spokes in the circumferential direction. Therefore, the present invention can drive even on a road surface having obstacles such as door-sills.