Washing brush

Abstract

The invention relates to a washing brush for cleaning objects, having a rotatably mounted brush head which can be driven, via a gear mechanism, by a drive wheel, which drive wheel can be subjected to the action of pressurized cleaning liquid. In order to develop the washing brush such that a high torque can be imparted to the brush head at low speed, it is proposed according to the invention that the gear mechanism comprise two internally toothed hollow wheels oriented coaxially in relation to one another, one of the hollow wheels being mounted in a rotatable manner and the other hollow wheel being fixed, and at least one externally toothed coupling element, which is in operative connection with the drive wheel and simultaneously meshes with the two hollow wheels, the two hollow wheels having different numbers of teeth.

1 . Washing brush for cleaning objects, having a rotatably mounted brush head which can be driven, via a gear mechanism, by a drive wheel, which drive wheel can be subjected to the action of pressurized cleaning liquid, wherein the gear mechanism comprises two internally toothed hollow wheels oriented coaxially in relation to one another, one of the hollow wheels being mounted in a rotatable manner and the other hollow wheel being fixed, and at least one externally toothed coupling element, which is in operative connection with the drive wheel and meshes with the two hollow wheels simultaneously, the two hollow wheels having different numbers of teeth.  
   
   
       2 . Washing brush according to  claim 1 , wherein the at least one coupling element is configured as a planet wheel which meshes with a sun wheel, driven by the drive wheel, and with the two hollow wheels.  
   
   
       3 . Washing brush according to  claim 1 , wherein the drive wheel is configured as a turbine wheel.  
   
   
       4 . Washing brush according to  claim 3 , wherein the turbine wheel is connected integrally to the sun wheel.  
   
   
       5 . Washing brush according to  claim 2 , wherein the gear mechanism comprises two coupling elements in the form of two diametrically opposite planet wheels.  
   
   
       6 . Washing brush according to  claim 1 , wherein the fixed hollow wheel is retained on a supporting plate and the rotatable hollow wheel is retained on a cover plate, the two hollow wheels and the supporting plate and the cover plate defining a gear space which accommodates the at least one coupling element.  
   
   
       7 . Washing brush according to  claim 6 , wherein the fixed hollow wheel is connected integrally to the supporting plate.  
   
   
       8 . Washing brush according to  claim 6 , wherein the rotatable hollow wheel is connected integrally to the cover plate.  
   
   
       9 . Washing brush according to  claim 4 , wherein the drive wheel is configured as a turbine wheel with a turbine wheel disk which is oriented parallel to the supporting plate and, on its side which is directed away from the supporting plate, carries turbine blades.  
   
   
       10 . Washing brush according to  claim 9 , wherein the turbine wheel disk engages with sliding action against the supporting plate.  
   
   
       11 . Washing brush according to  claim 9 , wherein the turbine wheel disk and the supporting plate have interengaging guide elements.  
   
   
       12 . Washing brush according to  claim 2 , wherein the gear mechanism has an output shaft which is oriented coaxially in relation to the two hollow wheels, engages through the sun wheel and is connected in a rotationally fixed manner to the rotatable hollow wheel and the brush head.  
   
   
       13 . Washing brush according to  claim 11 , wherein the output shaft is carried on a cover plate which is connected fixedly to the rotatable hollow wheel.  
   
   
       14 . Washing brush according to  claim 1 , wherein the washing brush has a housing with a base wall which is disposed parallel to a wall of the gear mechanism and is spaced apart therefrom, the wall and the base wall axially delimiting a drive space which accommodates the drive wheel.  
   
   
       15 . Washing brush according to  claim 14 , wherein the drive wheel is configured as a turbine wheel with turbine blades disposed in the drive space.  
   
   
       16 . Washing brush according to  claim 14 , wherein the output shaft engages through the drive space and a through-passage opening of the base wall and, in its end region which projects beyond the base wall, can be connected in a releasable manner to the brush head.  
   
   
       17 . Washing brush according to  claim 1 , wherein the brush head has a brush disk on which a first and a second set of cleaning bristles are mounted, the cleaning bristles of the first set being oriented parallel to the axis of rotation of the brush head and the cleaning bristles of the second set being oriented obliquely in relation to the axis of rotation.  
   
   
       18 . Washing brush according to  claim 17 , wherein the brush disk engages with sliding action against a base wall of the housing of the washing brush.  
   
   
       19 . Washing brush according to  claim 18 , wherein the brush disk and the base wall of the housing have interengaging guide elements.