Vacuum cleaner

Abstract

A vacuum cleaner includes a suction head including a cover and a bottom plate provided with a suction hole through which air is sucked from a surface to be cleaned and rotatably combined with the cover. The bottom plate is rotated in one direction relative to the cover when the suction head moves forward, and is rotated in the other direction relative to the cover when the suction head moves backward. Further, the vacuum cleaner includes a brush base including brushes and movable upward and backward between the cover and the bottom plate. The brush base includes indicating parts exposed to the outside of the cover and forming at least a portion of the external appearance of the suction head.

What is claimed is: 
     
         1 . A vacuum cleaner comprising:
 a main body;   a fan motor provided within the main body and generating suction force;   a dust collector provided within the main body and collecting dust;   an extension pipe extended from the main body; and   a suction head comprising a cover combined with the extension pipe, a bottom plate provided with a suction hole through which air is sucked from a surface to be cleaned and combined with the cover, and a brush base comprising brushes and movable upward and downward between the cover and the bottom plate,   wherein the brush base comprises indicating parts exposed to the outside of the cover and forming at least a portion of the external appearance of the suction head.   
     
     
         2 . The vacuum cleaner according to  claim 1 , wherein the indicating parts are formed at corners of the brush base. 
     
     
         3 . The vacuum cleaner according to  claim 1 , wherein the cover comprises slots in which the indicating parts are accommodated. 
     
     
         4 . The vacuum cleaner according to  claim 3 , wherein the indicating parts are movable upward and downward in the slots. 
     
     
         5 . The vacuum cleaner according to  claim 1 , wherein the suction head is switched to one of a first mode in which the brush base moves upward toward the cover so that the bottom plate is closely adhered to the surface to be cleaned, and a second mode in which the brush base moves downward toward the bottom plate so that the brushes are closely adhered to the surface to be cleaned. 
     
     
         6 . The vacuum cleaner according to  claim 5 , wherein a height difference between the indicating parts and the cover is not generated in the first mode, and a height difference between the indicating parts and the cover is generated in the second mode. 
     
     
         7 . The vacuum cleaner according to  claim 1 , further comprising a lever member rotatably provided to move the brush base upward and downward, the lever member comprising pressing protrusions pressing the brush base and an operating member to rotate the lever member. 
     
     
         8 . The vacuum cleaner according to  claim 1 , further comprising elastic members elastically supporting the brush base. 
     
     
         9 . A vacuum cleaner comprising:
 a main body;   a fan motor provided within the main body and generating suction force;   a dust collector provided within the main body and collecting dust;   an extension pipe extended from the main body; and   a suction head comprising a cover combined with the extension pipe, a bottom plate provided with a suction hole through which air is sucked from a surface to be cleaned and rotatably combined with the cover, and a brush base comprising brushes and indicating parts exposed to the outside of the cover and forming at least a portion of the external appearance of the suction head and movable upward and downward between the cover and the bottom plate,   wherein the suction head is switched to one of a first mode in which the brush base moves maximally upward closest to the cover so that the bottom plate is closely adhered to the surface to be cleaned, and a second mode in which the brush base moves maximally downward closest to the bottom plate so that the brushes are closely adhered to the surface to be cleaned, and   wherein the bottom plate is rotated in a first direction relative to the cover when the suction head moves forward, and is rotated in a second direction opposite the first direction relative to the cover when the suction head moves backward, in the first mode.