Suction head for vacuum cleaner

Abstract

The present invention discloses a suction head for a vacuum cleaner, including a casing having a suction port for sucking alien substances from the floor, an agitator rotatably installed inside the suction port, a plurality of brushes being arranged on the agitator in the length direction, and an agitator driving unit for driving the agitator to perform reciprocating rotation in a predetermined angle range. The suction head for the vacuum cleaner improves cleaning performance of the vacuum cleaner.

1 . A suction head for a vacuum cleaner, comprising: 
 a casing having a suction port for sucking alien substances from the floor;    an agitator rotatably installed inside the suction port, a plurality of brushes being arranged on the agitator in the length direction; and    an agitator driving unit for driving the agitator to perform reciprocating rotation in a predetermined angle range.    
   
   
       2 . The suction head of  claim 1 , wherein the agitator driving unit comprises: 
 a driving motor for generating a rotational force; and    a driving force transmitting unit for transforming rotation of the driving motor into rotation of the agitator, so that the agitator can perform reciprocating rotation in the forward/backward direction in the predetermined angle range.    
   
   
       3 . The suction head of  claim 2 , wherein the driving force transmitting unit comprises: 
 a rotary link fixed to a motor shaft of the driving motor and rotated coaxially to the motor shaft;    a hinge bracket fixed to one side of the outer circumference of the agitator; and    a connecting rod of which an end is hingedly connected to a position of the rotary link eccentric from the rotation center of the rotary link, and another end is hingedly connected to the hinge bracket.    
   
   
       4 . The suction head of  claim 3 , wherein a first hinge hole is formed in the position of the rotary link eccentric from the rotation center of the rotary link; 
 a second hinge hole is formed on the hinge bracket; and    a first hinge shaft inserted into the first hinge hole of the rotary link is protruded from an end of the connecting rod, and a second hinge shaft inserted into the second hinge hole of the hinge bracket is protruded from another end of the connecting rod.    
   
   
       5 . The suction head of  claim 3 , wherein a first hinge shaft is protruded from the position of the rotary link eccentric from the rotation center of the rotary link; 
 a second hinge shaft is protruded from the hinge bracket; and    a first hinge hole into which the first hinge shaft of the rotary link is inserted is formed in one end of the connecting rod, and a second hinge hole into which the second hinge shaft of the hinge bracket is inserted is formed in another end of the connecting rod.    
   
   
       6 . The suction head of  claim 1 , wherein the brushes are evenly arranged at regular intervals in the length direction of the agitator.  
   
   
       7 . The suction head of  claim 1 , wherein the brushes are arranged in rows in the length direction of the agitator.  
   
   
       8 . The suction head of  claim 1 , further comprising a suction nozzle installed inside the casing, for collecting the alien substances sucked from the suction port, a volume of which being reduced from the suction port to the opposite side.