Filter unit and cleaner

Abstract

A filter unit includes a filter portion and a dust blocking portion that blocks dust fed to the filter portion. In a side view of the filter portion, the filter portion and at least a part of the dust blocking portion overlap with each other.

What is claimed is: 
     
         1 . A filter unit comprising:
 a filter portion; and   a dust blocking portion that blocks dust fed to the filter portion, wherein   in a side view of the filter portion, the filter portion and at least a part of the dust blocking portion overlap with each other.   
     
     
         2 . The filter unit according to  claim 1 , wherein
 the filter portion has a cylindrical shape, and   at least a part of the dust blocking portion is disposed inside the filter portion.   
     
     
         3 . The filter unit according to  claim 2 , wherein
 the dust blocking portion blocks dust fed from a front of the filter portion to the filter portion, and   the dust blocking portion protrudes from a front end portion of the filter portion to an inside of the filter portion.   
     
     
         4 . The filter unit according to  claim 3 , wherein
 the dust blocking portion has an outer diameter that decreases rearward from a front end portion of the dust blocking portion.   
     
     
         5 . The filter unit according to  claim 4 , wherein
 the dust blocking portion has a conical shape, and   the filter portion has a central axis that passes through an apex of the dust blocking portion.   
     
     
         6 . The filter unit according to  claim 5 , wherein
 the dust blocking portion has a dimension that is larger than a half value of a dimension of the filter portion and is equal to or smaller than the dimension of the filter portion in a direction parallel to the central axis of the filter portion.   
     
     
         7 . The filter unit according to  claim 1 , wherein
 the filter portion is a mesh filter, and   the dust blocking portion is a mesh filter having a finer mesh than the filter portion.   
     
     
         8 . The filter unit according to  claim 1 , wherein
 the filter portion is a mesh filter, and   the dust blocking portion does not allow air to pass therethrough.   
     
     
         9 . A cleaner comprising:
 the filter unit according to  claim 1 ; and   a fan motor that generates a suction force in the filter portion.   
     
     
         10 . A filter unit comprising:
 a filter portion having a cylindrical shape; and   a dust blocking portion that blocks dust fed to the filter portion, at least a part of the dust blocking portion being disposed inside the filter portion.