Cleaner

Abstract

A cleaner according to the present invention includes a cleaner main body, and a suction unit connected to the cleaner main body to suck air containing dust, and provided with a brush assembly brought into contact with a floor, wherein the brush assembly includes a rotating rod rotatable in one direction, a brush portion protruding from an outer circumferential surface of the rotating rod to rotate together with the rotating rod, and a blade erected at the rear of the brush portion in the one direction to be adjacent to the brush portion, and brought into contact with the brush portion during the rotation in the one direction, to prevent foreign substances from getting tangled in the brush portion. This configuration may prevent foreign substances such as hair and the like from being tangled in the brush portion during an operation of the cleaner.

What is claimed is: 
     
         1 . A cleaner, comprising
 a cleaner main body; and   a suction unit connected to the cleaner main body to suck air containing dust, and provided with a brush assembly brought into contact with a floor,   wherein the brush assembly comprises:   a rotating rod rotatable in one direction;   a brush portion protruding from an outer circumferential surface of the rotating rod to rotate together with the rotating rod; and   a blade erected at the rear of the brush portion in the one direction to be adjacent to the brush portion, and brought into contact with the brush portion during the rotation in the one direction, so as to prevent foreign substances from getting tangled in the brush portion.   
     
     
         2 . The cleaner of  claim 1 , wherein the brush portion comprises a plurality of bristles each disposed in a radial direction of the rotating rod along a preset path from one end to another end of the rotating rod, and
 wherein the blade protrudes in the radial direction from the outer circumferential surface of the rotating rod and extends along the preset path.   
     
     
         3 . The cleaner of  claim 1 , wherein the blade is made of a material having a smaller elastic modulus than the brush portion. 
     
     
         4 . The cleaner of  claim 1 , wherein the brush portion and the blade are formed to have the same height from the outer circumferential surface of the rotating rod. 
     
     
         5 . The cleaner of  claim 1 , wherein the brush assembly further comprises a support member erected at the rear of the blade in one direction to be adjacent to the blade, so as to support the blade during the rotation in the one direction. 
     
     
         6 . The cleaner of  claim 5 , wherein the support member is made of a material having a higher elastic modulus than the blade. 
     
     
         7 . The cleaner of  claim 5 , wherein the support member is provided with a plurality of bristles each disposed in the radial direction of the rotating rod. 
     
     
         8 . A cleaner, comprising:
 a cleaner main body; and   a suction unit connected to the cleaner main body to suck air containing dust, and provided with a brush assembly brought into contact with a floor,   wherein the brush assembly comprises:   a rotating rod rotatable in one direction;   a plurality of covers mounted on an outer circumferential surface of the rotating rod and spaced apart from one another in a circumferential direction of the rotating rod to form brush slits; and   brush units insertable into the respective brush slits from an end portion of the rotating rod so as to be rotated together with the rotating rod.   
     
     
         9 . The cleaner of  claim 8 , wherein each of the brush units comprises:
 a base portion extending along the brush slit and formed to be inserted between an inner circumferential surface of the cover and an outer circumferential surface of the rotating rod; and   a brush portion mounted on the base portion, and provided with a plurality of bristles arranged in the radial direction of the rotating rod along the brush slit.   
     
     
         10 . The cleaner of  claim 9 , wherein the brush unit further comprises a blade erected at the rear of the brush portion in the one direction to be adjacent to the brush portion, so as to be brought into contact with the brush portion during the rotation in the one direction. 
     
     
         11 . The cleaner of  claim 8 , wherein the cover is provided with a hook portion protruding toward the rotating rod, and
 wherein the rotating rod is provided with a hook receiving portion formed on an outer circumferential surface of the rotating rod so that the hook portion is received therein.   
     
     
         12 . The cleaner of  claim 8 , wherein the brush assembly further comprises an end cover coupled to an end portion of the rotating rod to support the brush units in the axial direction of the rotating rod. 
     
     
         13 . The cleaner of  claim 12 , wherein the end cover is provided with a through hole formed through the rotating rod in an axial direction of the rotating rod, and
 wherein the brush assembly further comprises a connection pin elastically supported inside the rotating rod and protruding to be inserted through the through hole.   
     
     
         14 . The cleaner of  claim 8 , wherein the brush slit extends from one end to another end of the rotating rod into a shape of being bent at least once, and
 wherein the brush unit is made of an elastic material so as to be inserted into the brush slit in a bent manner.