Suction nozzle for a vacuum cleaner

Abstract

A suction nozzle for a vacuum cleaner has a housing, a vacuum mouth disposed on the floor side in the housing, a cleaning roller mounted to rotate in the housing and driven by an electric motor, and a rechargeable battery unit for the energy supply of the electric motor. Via a rear connecting piece, the suction nozzle can be connected to a suction tube or a suction hose of a vacuum cleaner. The electric motor has a rated power of between 50 and watts, and the rechargeable battery unit has an energy density, relative to its total volume, of more than 200 watt-hours per liter (Wh/L).

1 . A suction nozzle for a vacuum cleaner, comprising:
 a housing;   a vacuum mouth disposed on a floor side in the housing;   a cleaning roller mounted to rotate in the housing and driven by an electric motor;   a rechargeable battery unit for supplying energy to the electric motor; and   a rear connecting piece for connecting the housing to a suction tube or a suction hose of the vacuum cleaner,   wherein the electric motor has a rated power of between 50 and 150 W (watts) and the rechargeable battery unit has an energy density, relative to its total volume, of more than 200 Wh/L (watt-hours per liter).   
     
     
         2 . The suction nozzle according to  claim 1 , wherein the rechargeable battery unit contains at least one battery selected from the group consisting of a lithium-ion rechargeable battery, a lithium-polymer rechargeable battery, a lithium/manganese dioxide rechargeable battery, a lithium-nanophosphate rechargeable battery, and a lithium/lithium cobalt oxide rechargeable battery. 
     
     
         3 . The suction nozzle according to  claim 2 , wherein the rechargeable battery unit is provided with at least one rechargeable battery that has a non-tubular outer contour and that is matched to a shape of an installation space present in the housing. 
     
     
         4 . The suction nozzle according to  claim 3 , wherein the rechargeable battery unit has rechargeable batteries which are shaped differently from each other and which are disposed separately at locations spaced apart from one another. 
     
     
         5 . The suction nozzle according to  claim 1 , wherein the energy capacity of the rechargeable battery unit and the rated power of the electric motor are matched to one another, in such a manner that operating time on one rechargeable battery charge is longer than 30 minutes, regardless of the type of floor covering.