Suction head with improved adherence to the surface to be vacuumed

Abstract

A suction head for a vacuum cleaner or the like is described, said suction head comprising: a base plate with a base plate channel open towards a surface to be vacuumed, a suction channel in fluid communication with the base plate channel, main wheels for moving said suction head on the surface to be vacuumed, and a bracket for connecting said main wheels to said base plate, wherein said bracket is connected to said base plate in a rotatable manner so that said base plate is tiltable with respect to the main wheels.

1 . A suction head for a vacuum cleaner or the like comprising:
 a base plate with a base plate channel open towards a surface to be vacuumed,   a suction channel in fluid communication with the base plate channel,   main wheels for moving said suction head on the surface to be vacuumed, and   a bracket for connecting said main wheels to said base plate,   wherein said bracket is connected to said base plate in a rotatable manner so that said base plate is tiltable with respect to the main wheels,   wherein said suction channel comprises an inner tube and an outer tube telescopically coupled together,   wherein said suction channel ( 4 ) is rotatably supported by said bracket ( 7 ).   
     
     
         2 . The suction head of  claim 1 , wherein the projection onto the ground of said main wheels is situated, relative to the advancing direction, at the rear of the footprint of the base plate. 
     
     
         3 . The suction head of  claim 1 , wherein said suction channel ( 4 ) comprises a spherical inlet head and a spherical outlet head, wherein said spherical inlet head is configured to cooperate with a cowling of the base plate and wherein said spherical outlet head is configured to cooperate with a spherical cavity of a suction tube so as to form a first ball joint and a second ball joint. 
     
     
         4 . The suction head of  claim 1 , wherein said bracket comprises a central cradle and two arms, wherein each arm comprises means for rotatably attaching the main wheels and means for rotatably attaching said spherical cavity. 
     
     
         5 . The suction head of  claim 1 , wherein said base plate further comprises wheels whose projection onto the ground lies within the footprint of the base plate. 
     
     
         6 . The suction head of  claim 1 , wherein the axis of rotation of said base plate and said bracket is a horizontal axis substantially parallel to the front edge or rear edge of the base plate and defined by a straight line passing through the center of the exit section of an elbow and terminating at the height of the gripping handle relative to the floor. 
     
     
         7 . The suction head of  claim 1 , wherein an axis of rotation of the main wheels is lower than an axis of rotation of said bracket and said suction tube. 
     
     
         8 . The suction head of  claim 7 , wherein the axis of rotation of the main wheels is in front of the axis of rotation of said bracket and said suction tube.