Electric vacuum cleaner

Abstract

An electric vacuum cleaner including a cleaner main body having a suction mechanism, a guide hose connected to the suction port of the cleaner main body and has a conductive wire disposed from one end to another end thereof, and a suction pipe which is connected to the guide hose and has an operating switch and suction head; and the guide hose is connected to the cleaner main body in a rotatable manner via a connecting assembly that is formed of an inner tube and an outer tube which is fitted over the inner tube, the inner tube has metal rings on its outer circumferential portion, the outer tube has, on its inner circumferential portion, contacts which are in contact with the metal rings, and the operating switch and the suction mechanism are electrically connected constantly via the connecting assembly.

1 . An electric vacuum cleaner comprising: 
 a cleaner main body that has therein a suction mechanism,    a guide hose which is connected at a first end thereof to a suction port of said cleaner main body and is provided with a conductive wire disposed from one end to another end thereof, and    a suction pipe which is connected at a first end thereof to a second end of said guide hose and is provided with an operating switch that electrically operates said suction mechanism via said conductive wire; wherein    said guide hose is connected to said cleaner main body in a rotatable manner via a connecting assembly that is comprised of an inner tube and an outer tube which is fitted over said inner tube,    said inner tube is provided on an outer circumferential portion thereof with metal rings,    said outer tube is provided on an inner circumferential portion thereof with contacts which are in contact with outer circumferential surfaces of said metal rings, and    said operating switch and said suction mechanism are electrically connected via said connecting assembly.    
     
     
         2 . The electric vacuum cleaner according to  claim 1 , wherein 
 said guide hose is connected to either one of said inner tube and said outer tube,    said suction port is connected to another one of said inner tube and outer tube, and    said guide hose is rotatably connected to said cleaner main body.    
     
     
         3 . An electric vacuum cleaner comprising: 
 a cleaner main body that has therein a suction mechanism,    a guide hose which is connected at a first end thereof to a suction port of said cleaner main body and is provided with a conductive wire disposed from one end to another end thereof, and    a suction pipe which is connected at a first end thereof to a second end of said guide hose and is provided with an operating switch that electrically operates said suction mechanism via said conductive wire; wherein    said guide hose is connected to said suction pipe in a rotatable manner via a connecting assembly that is comprised of an inner tube and an outer tube which is fitted over said inner tube,    said inner tube is provided on an outer circumferential portion thereof with metal rings,    said outer tube is provided on an inner circumferential portion thereof with contacts which are in contact with outer circumferential surfaces of said metal rings, and    said operating switch and said suction mechanism are electrically connected via said connecting assembly.    
     
     
         4 . The electric vacuum cleaner according to  claim 3 , wherein 
 said guide hose is connected to either one of said inner tube and said outer tube,    said suction pipe is connected to another one of said inner tube and said outer tube, and    said guide hose is rotatably connected to said suction pipe.    
     
     
         5 . The electric vacuum cleaner according to  claim 1 , wherein said metal rings are formed by press working.  
     
     
         6 . The electric vacuum cleaner according to  claim 2 , wherein said metal rings are formed by press working.  
     
     
         7 . The electric vacuum cleaner according to  claim 3 , wherein said metal rings are formed by press working.  
     
     
         8 . The electric vacuum cleaner according to  claim 4 , wherein said metal rings are formed by press working.