Cleaner

A cleaner comprising:

• a body;
• a left spin-mop module located on a left side of the body with respect to a centerline of the body and a right spin-mop module located on a right side of the body with respect to the centerline of the body, wherein the left spin-mop module and the right spin-mop module rotate to perform mopping, and each of the left spin-mop module and the right spin-mop module including:
• a rotating plate provided at a lower side of the body;
• a mop unit coupled to a lower side of the rotating plate so as to be contactable with a floor;
• and
• a spin shaft coupled to an upper side of the rotating plate, the spin shaft defining a first rotational axis extending in a vertical direction of the body;
• a left spin-drive unit disposed on the left side of the body with respect to the centerline of the body, the left spin-drive unit being configured to provide a force to rotate the left spin-mop module,
• a right spin-drive unit disposed on the right side of the body with respect to the centerline of the body, the right spin-drive unit being configured to provide a force to rotate the right spin-mop module;
• a left drive-transmission unit configured to transmit the force of the left spin-drive unit to the left spin-mop module;
• and
• a right drive-transmission unit configured to transmit the force of the right spin-drive unit to the right spin-mop module,
• wherein each of the left spin-drive unit and the right spin-drive unit has a second rotational axis that transmits force to rotate the left spin-mop and the right spin-mop around the first rotational axis, and
• wherein the second rotational axis extends in a direction from a rear end of the body to a front end of the body.