Bendable suction brush for vacuum cleaner

Abstract

A suction brush assembly, which is connected with a body of a vacuum cleaner via an air passage, draws in air and dust from a surface to be cleaned. A bendable suction brush is provided that includes a brush body connected with the air passage, and a plurality of movable frames each with a suction passage to draw in the air and dust. The frames are formed on the brush body in a movable manner so as to rotate via an external force to a predetermined angle with respect to the brush body. At least one front frame overlaps portions of the plurality of movable frames to cover an open end of the brush body.

1 . A bendable suction brush of a suction brush assembly, which is connected with a body of a vacuum cleaner via an air passage, drawing in ambient air and entrained dust from a surface to be cleaned, the bendable suction brush comprising: 
 a brush body connected with the air passage;    a plurality of movable frames including a suction passage to draw in the air and dust, and each of the frames being formed on the brush body in a movable manner so as to rotate with respect to the brush body about a rotational axis, the frames being rotated by and external force; and    at least one front frame overlapping portions of the plurality of movable frames to cover an open end of the brush body.    
   
   
       2 . The bendable suction brush of  claim 1 , wherein the brush body includes: 
 a base with a rotational axis about which the movable frames are disposed;    a base cover connected with the base to guide the rotation of the movable frames; and    a connecting pipe rotatably disposed between the base and the base cover.    
   
   
       3 . The bendable suction brush of  claim 1 , wherein each of the plurality of movable frames each includes: 
 a brush frame disposed about the rotational axis;    an extension brush guide formed at an end of the brush frame; and    an extension brush movably disposed to slid along the length of the brush frame.    
   
   
       4 . The bendable suction brush of  claim 3 , wherein the plurality of movable frames are formed in a pair formed on opposite sides of the brush body in a symmetrical manner.  
   
   
       5 . The bendable suction brush of  claim 3 , wherein the suction passage includes: 
 a first duct formed in the brush frame;    a second duct formed in the extension guide frame; and    a third duct formed in the extension brush.    
   
   
       6 . The bendable suction brush of  claim 5 , wherein the first duct includes: 
 a connecting duct connected with the second and third ducts, and defining the suction passage therebetween; and    a circle duct forming an arc around a hinge portion which is secured about the rotational axis, the circle duct being connected to the base.    
   
   
       7 . The bendable suction brush of  claim 3 , wherein the extension brush includes: 
 spaced locking holes formed in the extension brush at predetermined intervals; and    a locking protrusion formed on the brush frame to be received in the spaced locking holes.    
   
   
       8 . The bendable suction brush of  claim 1 , wherein the plurality of movable frames are disposed on the brush body with an elastic member biasing the frames to an original configuration against the external force is removed.  
   
   
       9 . The bendable suction brush of  claim 8 , wherein the elastic member is a torsion spring connected to the plurality of movable frames.  
   
   
       10 . The bendable suction brush of  claim 1 , wherein the plurality of movable frames rotate between approximately 40 degree and 50 degree.  
   
   
       11 . The bendable suction brush of  claim 2 , wherein the connecting pipe includes: 
 a sphere joint; and    a guide ring disposed on an outer circumference of the sphere joint and seated in a guide groove formed in the brush body.    
   
   
       12 . The bendable suction brush of  claim 1 , wherein the front frame includes: 
 a front frame body with a secondary passage; and    a front frame cover disposed on an upper side of the front frame.    
   
   
       13 . A bendable suction brush of a suction brush assembly, which is connected with a body of a vacuum cleaner in fluid communication via an air passage, drawing in air and dust from a surface to be cleaned, the bendable suction brush comprising: 
 a brush body connected with the air passage;    a plurality of longitudinally extendable moving frames each having a suction passage drawing in the air and dust, the longitudinally extendable moving frames being provided in a pair at opposite sides of the brush body and rotated by an external force with respect to the brush body about a rotational axis; and    at least one front frame overlapping portions of the plurality of movable frames to cover an open end of the brush body.    
   
   
       14 . The bendable suction brush of  claim 13 , wherein the plurality of longitudinally extendable moving frames are disposed on the brush body with an elastic member that biases the frames to an original configuration against the external force.  
   
   
       15 . The bendable suction brush of  claim 13 , wherein the elastic member is a torsion spring connected to the plurality of longitudinally extendable moving frames.