Suction nozzle for a hard surface cleaning apparatus and hard surface cleaning apparatus having such a suction nozzle

Abstract

A suction nozzle for a portable hard surface cleaning apparatus includes a suction nozzle housing having a first and a second housing half-shell which between them form a suction duct which extends from a suction opening to a suction duct end section to which a source of vacuum can be connected for creating a suction flow. Arranged at the suction opening is a replaceable squeegee lip, and the two housing half-shells each have at least one holding element adjacent to the suction opening, and a holding section of the replaceable squeegee lip is arranged between the holding elements of the two housing half-shells. In order to improve the suction nozzle in such a manner that it is reliably held at the suction opening, the holding elements in each case form an engagement with the holding section.

1 . A suction nozzle for a portable hard surface cleaning apparatus for drawing off and suctioning off liquid from a hard surface, in particular from a window pane, comprising a suction nozzle housing having a first and a second housing half-shell which between them form a suction duct, wherein the suction duct extends from a suction opening at which a replaceable squeegee lip is held in place, to a suction duct end section to which a source of vacuum is connectable for creating a suction flow and wherein the two housing half-shells each have at least one holding element adjacent to the suction opening and a holding section of the replaceable squeegee lip is arranged between the holding elements of the two housing half-shells, wherein the holding elements of the housing half-shells in each case form an engagement with the holding section of the replaceable squeegee lip. 
     
     
         2 . The suction nozzle in accordance with  claim 1 , wherein the holding section of the replaceable squeegee lip is positionable between the at least one holding element of the first housing half-shell and the at least one holding element of the second housing half-shell both in a first position of use of the replaceable squeegee lip and in a second position of use of the squeegee lip turned through 180° about the center axis thereof, wherein the center axis is oriented parallel to a longitudinal axis of the suction duct. 
     
     
         3 . The suction nozzle in accordance with  claim 1 , wherein the replaceable squeegee lip has a symmetrical configuration with respect to the center plane thereof, wherein the center plane is oriented parallel to the longitudinal axis of the suction duct. 
     
     
         4 . The suction nozzle in accordance with  claim 1 , wherein the holding section of the replaceable squeegee lip is configured as an enlargement and the holding elements each have a depression. 
     
     
         5 . The suction nozzle in accordance with  claim 4 , wherein the enlargement is configured in the form of a straight-line bead and the holding elements each have a depression into which the bead extends. 
     
     
         6 . The suction nozzle in accordance with  claim 1 , wherein at least one holding element of the first housing half-shell is arranged in the area of the suction duct and forms a flow guide element. 
     
     
         7 . The suction nozzle in accordance with  claim 6 , wherein the at least one holding element arranged in the area of the suction duct forms a flow guide rib. 
     
     
         8 . The suction nozzle in accordance with  claim 7 , wherein a plurality of flow guide ribs in spaced-apart relation to one another are arranged in the area of the suction duct. 
     
     
         9 . The suction nozzle in accordance with  claim 8 , wherein the flow guide ribs are arranged in a fan-like manner. 
     
     
         10 . The suction nozzle in accordance with  claim 8 , wherein the flow guide ribs are arranged at the same height relative to the longitudinal axis of the suction duct. 
     
     
         11 . The suction nozzle in accordance with  claim 8 , wherein the flow guide ribs taper against the direction of flow of the suction flow. 
     
     
         12 . The suction nozzle in accordance with  claim 8 , wherein the flow guide ribs in each case have, at their upper edge facing away from the first housing half-shell, a depression into which the holding section of the replaceable squeegee lip extends. 
     
     
         13 . The suction nozzle in accordance with  claim 12 , wherein the depressions at the upper edges of the flow guide ribs are arranged in a rear end region of the flow guide ribs relative to the direction of flow of the suction flow and wherein, in a section upstream of the depressions, the upper edges form a planar contact face for the replaceable squeegee lip. 
     
     
         14 . The suction nozzle in accordance with  claim 8 , wherein the flow guide ribs are of wedge-shaped configuration in cross-section. 
     
     
         15 . The suction nozzle in accordance with  claim 8 , wherein the replaceable squeegee lip makes contact with the flow guide ribs over at least one half of its extension, relative to the direction of flow of the suction flow. 
     
     
         16 . The suction nozzle in accordance with  claim 6 , wherein the first housing half-shell has at least one further holding element that is arranged outside of the suction duct. 
     
     
         17 . The suction nozzle in accordance with  claim 16 , wherein the first housing half-shell has at least two further holding elements which are arranged outside of the suction duct in symmetrical relation with each other, relative to the longitudinal axis of the suction duct. 
     
     
         18 . The suction nozzle in accordance with  claim 1 , wherein the suction nozzle has a non-replaceable squeegee lip which is integrally formed on the first housing half-shell. 
     
     
         19 . The suction nozzle in accordance with  claim 18 , wherein the non-replaceable squeegee lip together with the first housing half-shell forms an injection-molded part comprising a hard component and an elastomer component. 
     
     
         20 . The suction nozzle in accordance with  claim 19 , wherein at least one holding element of the first housing half-shell is arranged in the area of the suction duct and forms a flow guide element and wherein the elastomer component at least partially surrounds, in a circumferential direction, the at least one holding element arranged in the area of the suction duct. 
     
     
         21 . The suction nozzle in accordance with  claim 1 , wherein one of the two housing half-shells has a latch element in the area of the suction duct end section, which latch element forms an elastically deformable wall section of the suction duct and is overmolded by an elastomer component. 
     
     
         22 . The suction nozzle in accordance with  claim 21 , wherein the latch element forms a latch hook which has a spring tongue forming an elastically deformable wall section of the suction duct and a latch projection projecting outwards from the spring tongue, wherein the spring tongue is overmolded by the elastomer component. 
     
     
         23 . A portable hard surface cleaning apparatus for drawing off and suctioning off liquid from a hard surface, in particular from a window pane, the portable hard surface cleaning apparatus having a suction unit, a dirty-liquid tank and a separating device for separating liquid from a suctioned liquid/air mixture, and having a suction nozzle in accordance with  claim 1 . 
     
     
         24 . The portable hard surface cleaning apparatus in accordance with  claim 23 , wherein the portable hard surface cleaning apparatus has a suction duct receiving socket which is pluggably connectable to the suction duct end section, and has a latch receptacle for receiving a latch projection of the suction nozzle.