Suction structure of robot vacuum cleaner

Abstract

A suction structure of a robot vacuum cleaner according to the present invention is disclosed. The suction structure of a robot vacuum cleaner according to the present invention includes a suction module which is located on a bottom surface of a main body of the robot vacuum cleaner to suck foreign matters in accordance with the rotation of the brush while being lifted up or down in accordance with a surface condition of the floor and the suction module includes a flow path connecting unit which is formed at one side thereof to be inserted into a flow path unit formed in the main body.

What is claimed is: 
     
         1 . A suction structure of a robot vacuum cleaner which sucks foreign matters while traveling an area to be cleaned, the suction structure comprising:
 a suction module which is located on a bottom surface of a main body of the robot vacuum cleaner and sucks foreign matters while rotating in accordance with a surface condition of the area to be cleaned; and   a holding member which fixes one side of the suction module to be rotatable within a predetermined distance.   
     
     
         2 . The suction structure according to  claim 1 , wherein the suction module includes:
 a main brush which sucks the foreign matters while rotating in accordance with the surface condition of the area to be cleaned;   a housing unit in which the main brush is disposed; and   a support unit which is formed at one side of the housing unit to be mounted in the main body and supports the main brush to rotate in accordance with the surface condition of the area to be cleaned.   
     
     
         3 . The suction structure according to  claim 2 , wherein the main brush includes:
 a blade which rotates to guide the foreign substances into the main body; and   a rotating shaft which is coupled to the blade to rotate the blade.   
     
     
         4 . The suction structure according to  claim 3 , wherein one end of the rotating shaft is open to be coupled to a motor which supplies power to rotate the blade. 
     
     
         5 . The suction structure according to  claim 3 , wherein the housing unit includes:
 a deviation preventing unit which prevents the main brush from deviating while the blade rotates.   
     
     
         6 . The suction structure according to  claim 2 , wherein the holding member fixes the support unit to one side of the main body so that the main brush rotates within a predetermined distance and forms a space where the support unit is lifted up or down. 
     
     
         7 . The suction structure according to  claim 6 , wherein the holding member includes:
 a holder which covers the end of the support unit to be fixed to one side of the main body so that the main brush rotates within a predetermined distance.   
     
     
         8 . The suction structure according to  claim 7 , further comprising:
 an elastic member which is located in a space formed between the support unit and the holding member to enhance the contact between the main brush and the area to be cleaned.   
     
     
         9 . The suction structure according to  claim 2 , wherein the support unit includes:
 a first support unit and a second support unit which are formed at one side of the housing unit to be mounted in the main body and are disposed in parallel to be spaced apart from each other.   
     
     
         10 . The suction structure according to  claim 9 , wherein the holding member includes:
 a first holder which covers an end of the first support unit;   
       a second holder which covers an end of the second support unit; and
 a connecting unit which connects the first holder and the second holder, and 
 the first holder and the second holder fix the first support unit and the second support unit to one side of the main body, respectively, so that the main brush rotates within a predetermined distance. 
 
     
     
         11 . The suction structure according to  claim 9 , wherein ends of the first support unit and the second support unit are formed in a cylindrical shape to allow the main brush to be lifted up or down. 
     
     
         12 . The suction structure according to  claim 2 , wherein the suction module further includes:
 a flow path connecting unit which is formed at one side of the housing unit to be inserted into a flow path unit formed in the main body.   
     
     
         13 . The suction structure according to  claim 12 , wherein the flow path connecting unit has a pipe shape having a rectangular cross section to form a flow path. 
     
     
         14 . The suction structure according to  claim 12 , wherein the flow path connecting unit is inserted into the flow path unit formed in the main body to maintain a predetermined interval from an inside of the flow path into which the outside thereof is inserted. 
     
     
         15 . The suction structure according to  claim 12 , wherein the flow path connecting unit is lifted up or down in the flow path unit formed in the main body as the suction module rotates in accordance with the surface condition of the floor.