Cleaner

A cleaner comprising:

• a housing including a suction port;
• a brush holder in a lower portion of the housing, and configured to elastically deform;
• a side brush on the brush holder, and configured to rotate to guide foreign substances from a surface to be cleaned to the suction port;
• a rotatable frame coupled to the side brush and configured to rotate relative to the housing so as to rotate the side brush;
• a driving device inside the housing and configured to rotate the rotatable frame;
• and
• a movable frame couplable to the rotatable frame, wherein the brush holder, the side brush, the rotatable frame, the driving device, and the movable frame are configured such that,
• with the movable frame coupled to the rotatable frame and the rotatable frame rotated by the driving device,
• the movable frame is movable in a vertical direction of the housing to press and thereby elastically deform the brush holder to lift the side brush so as to space the side brush away from the surface to be cleaned.