EP3393319A1

EP3393319A1 - Suction nozzle for a hard surface cleaning device and hard surface cleaning device with a suction nozzle of this type

Info

Publication number: EP3393319A1
Application number: EP15816185.1A
Authority: EP
Inventors: Eugenio Venturini; Paolo Reggiani
Original assignee: Alfred Kaercher SE and Co KG
Current assignee: Alfred Kaercher SE and Co KG
Priority date: 2015-12-21
Filing date: 2015-12-21
Publication date: 2018-10-31
Anticipated expiration: 2035-12-21
Also published as: WO2017108089A1; CN108289576B; PL3393319T3; EP3393319B1; CN108289576A

Abstract

A suction nozzle (32) is provided for a portable hard surface cleaning device (10) for removing and suctioning up fluid from a hard surface, in particular from a windowpane, comprising a suction nozzle housing (77) with a first and a second housing half-shell (76, 78), and with a suction opening (82) on which at least one flexible wiper lip (92, 94) is arranged and to which a suction channel (80) connects which extends up to a suction channel end section (30), wherein a vacuum source can be connected to the suction channel end section (30) for establishing a suction flow, and wherein an engaging element (136) is arranged on the suction channel end section (30). To further develop the suction nozzle (32) in such a way that it can be produced more cost-effectively, the first housing half-shell (76) has an elastically deformable wall section (139) which forms the engaging element (136).

Description

SUCTION HOUSE FOR A HARD FLAT CLEANER AND HARDWARE CLEANER WITH SUCH A

suction nozzle

The invention relates to a suction nozzle for a portable Hartflächenreinigungs- device for removing and sucking liquid from a hard surface, in particular a window pane, comprising a suction nozzle housing with a first and a second housing half shell and with a suction opening, is arranged on the at least one flexible Abziehlippe and to which a suction channel adjoins, which extends to a Saugkanalendabschnitt, wherein the Saugkanalendabschnitt a negative pressure source can be connected to form a suction flow and wherein at the Saugkanalendabschnitt a locking element is arranged.

Moreover, the invention relates to a portable hard surface cleaning device with such a suction nozzle.

Such a suction nozzle and a hard surface cleaning device with such a suction nozzle are known from DE 10 2008 004 966 AI. With the aid of such a hard surface cleaning device, a hard surface, in particular a window pane, can be cleaned. The suction nozzle has at least one flexible Abziehlippe, which can be moved along a hard surface to be cleaned. By means of the negative pressure source, a suction flow can be generated under the action of which liquid can be sucked off the hard surface. This makes it possible to clean the hard surface, in particular a window, in the manner of a manual Fensterabziehers. If the Abziehlippe moved along the hard surface to be cleaned, so the liquid collects at he suction port of the suction nozzle and can be absorbed by the suction port via the suction channel. The suction nozzle known from DE 10 2008 004 966 A1 has a first housing half shell and a second housing half shell, which are detachably connected to one another and which see themselves receiving an air duct part. The air guide part defines in combination with one of the two housing half-shells the suction channel. On the outside of one of the two housing half-shells a configured as a separate component locking element is fixed, which is bolted to the housing half-shell. The suction channel has a suction channel end section, which can be inserted into a suction channel receiving shaft of the hard surface cleaning device, and the suction nozzle can be latched by means of the latching element held on the outside of the housing half shell.

Object of the present invention is to develop a suction nozzle of the type mentioned in such a way that it is cheaper to produce.

This object is achieved in a suction nozzle of the generic type according to the invention that the first housing half shell has an elastically deformable wall portion which forms the locking element.

In the suction nozzle according to the invention, the latching element, which serves to latch the suction nozzle to a suction channel receiving shaft of the hard surface cleaning device, is formed by the first housing half shell, which comprises an elastically deformable wall section for this purpose. The use of a separate locking element, which must be fixed to the first housing half shell, can therefore be omitted. The suction nozzle according to the invention is therefore characterized by a more cost-effective production and a more cost-effective installation.

The two housing half-shells preferably form the suction channel between them. An additional air guide part, which is arranged between the housing half-shells for defining the suction channel, can be dispensed with.

A particularly cost-effective production and assembly is achieved in an advantageous embodiment of the invention in that the first housing half shell forms an injection molded part with a hard component and an elastomer component, wherein the elastically deformable wall portion of the hard component is designed in the form of a spring tongue, which is surrounded by a hard component passing through the passage except for a first end portion, wherein the passage slot of the hard component is covered by the integrally formed on the hard component elastomer component. In such an embodiment, the first housing half-shell forms a one-piece injection molded part, which is formed by a hard component and an elastomer component. The elastically deformable wall portion is formed by the hard component in the form of a spring tongue. The spring tongue, with the exception of a first end region, is surrounded by a through slot penetrating the hard component, so that the spring tongue can be elastically deformed relative to the remaining region of the hard component. However, in order to ensure that liquid and suction air can not escape from the suction channel via the passage slot, the passage slot is covered by the elastomer component molded onto the hard component. The elastomer component allows to move the spring tongue and contributes to the resilient restoring force of the spring tongue.

The hard component may for example consist of a polypropylene material or an ABS material (acrylonitrile butadiene styrene), in particular a talcum reinforced polypropylene material.

The elastomer component is preferably made of a thermoplastic elastomer material.

Conveniently, the spring tongue bears at its free end region on the outside a latching projection. The latching projection may, like the spring tongue consist of the hard component, so that the spring tongue and the latching projection are cohesively connected to each other.

The spring tongue in combination with the latching projection preferably forms a latching hook formed from the hard component. The latching hook can when inserting the Saugkanalendabschnitts into a Saugkanalaufnahmeschacht of Immerse the hard surface cleaning device in a snap-in receptacle of the suction channel receiving shaft. This ensures a structurally simple way that the suction nozzle does not accidentally come off the Saugkanalaufnahmeschacht.

In an advantageous embodiment of the invention, the elastomer component in the region of the passage slot is configured U-shaped.

The elastomer component preferably forms a film hinge in the region of the passage slot. This gives the spring tongue a high mobility.

Preferably, a first flexible Abziehlippe of the elastomer component is integrally formed on the first housing half shell. The elastomer component is used in such an embodiment of the invention both for closing the passage of the hard component surrounding the spring tongue, as well as for forming a flexible Abziehlippe. This allows a further reduction of the manufacturing and assembly costs of the suction nozzle.

It is advantageous if the first housing half shell forms side walls of the suction channel, wherein the side walls are coated with the elastomer component. The elastomer component forms in such an embodiment of the invention, a sealing element which extends after installation of the two housing halves in the region of the side walls of the suction channel and ensures that no liquid and no suction air escapes from the suction channel in the region of the side walls.

A particularly effective cleaning effect is achieved in a preferred embodiment of the invention in that a second flexible Abziehlippe is interchangeably held between the first housing half shell and the second housing half shell, wherein the two housing half shells holding elements and a holding portion of the second flexible Abziehlippe is arranged between the retaining elements of the two housing half-shells and forms an engagement with the holding elements, wherein at least one holding element of the first housing half-shell is arranged in the suction channel. By providing the retaining elements, the second flexible Abziehlippe can be reliably set between the two housing halves, the second flexible Abziehlippe is held immovably in the region of the suction channel, since the first housing half shell also in the region of the suction channel has at least one holding element, which with a holding portion the second flexible Abziehlippe is engaged.

To extend the life of the suction nozzle, it is advantageous if the holding portion of the second flexible Abziehlippe both in a first

Use position of the second flexible Abziehlippe and in a rotated by 180 ° about its central axis second position of use of the second flexible Abziehlippe between the holding elements of the two housing half shells positionable. The second flexible Abziehlippe has at its protruding from the suction nozzle housing end face preferably a first peel edge and a second peel edge, wherein it rests when cleaning a hard surface depending on the position of use either with the first peel edge or with the second peel edge on the hard surface. The respective peel edge is subject to wear. Upon reaching a maximum degree of wear, a reliable cleaning effect is not guaranteed in all cases. The user then has the option to remove the replaceable second flexible Abziehlippe the suction nozzle housing to rotate the second Abziehlippe by 180 ° about their aligned parallel to the longitudinal axis of the suction channel center axis and then insert the second Abziehlippe back into the Saugdüsengehäuse. Subsequently, the cleaning of the hard surface can be continued, whereby now the previously unused peeling edge rests against the hard surface. The provision of the retaining elements here ensures that the second flexible Abziehlippe can be reliably fixed in both operating positions between the two housing halves. Preferably, the second flexible Abziehlippe is designed symmetrically to its parallel to a longitudinal axis of the suction channel and parallel to a peel edge of the second flexible Abziehlippe aligned central axis.

To change the position of use, it is advantageous if the second

Abziehlippe pulled transversely to the longitudinal axis of the suction channel of the suction nozzle housing, then rotated 180 ° about its central axis and then again can be drawn into the suction nozzle housing transversely to the longitudinal axis of the suction channel.

It can be provided that the holding portion of the second flexible Abziehlippe is designed as an extension and the holding elements of the two

Housing half shells have recesses into which the extension is immersed. The holding elements and the holding portion thus engage each other, so that the second flexible Abziehlippe is reliably fixed to the suction opening.

The extension of the second flexible Abziehlippe is conveniently designed as a straight bead, which extends along the entire second Abziehlippe.

Preferably, the bead has a circular cross-sectional area.

The at least one retaining element of the first housing half shell, which is arranged in the suction channel, forms in an advantageous embodiment of the invention, a flow guide rib. The Strömungsleitrippe serves for a determination of the second flexible Abziehlippe at the suction opening, in addition, the Strömungsleitrippe allows a guide the suction flow.

It is advantageous if the first housing half shell has a plurality of holding elements arranged in the suction channel in the form of flow guide ribs. The Strömungsleitrippen are conveniently arranged fan-shaped, so that they have an increasing inclination to the longitudinal axis of the suction channel with increasing distance from a centrally disposed longitudinal axis of the suction channel.

It is advantageous if the Strömungsleitrippen are arranged with respect to the longitudinal axis of the suction channel at the same height.

The flow guide ribs are preferably positioned in the region of the suction opening.

In order to keep flow losses of the suction flow low, it is advantageous if the Strömungsleitrippen tapered against the flow direction of the suction flow.

The Strömungsleitrippen may each have a recess on its upper edge remote from the first housing half shell, in which the holding portion designed as an extension of the second flexible Abziehlippe dips.

The recesses are preferably arranged on the upper edge of the flow guide ribs in a rear end region of the flow guide ribs with respect to the flow direction, and in a section located upstream of the depressions, the upper edges of the flow guide ribs advantageously form a planar bearing surface for the second flexible Abziehlippe.

In cross-section, the flow-guiding ribs are expediently wedge-shaped, so that they have a lower height in a front end region, which is anterior with respect to the flow direction of the suction flow, than in a rear end region, relative to the flow direction.

The length of the flow guide ribs is preferably chosen such that the second flexible Abziehlippe over at least half their extent Bezo- gene is seated on the flow direction of the suction flow on the Strömungsleitrippen.

As already mentioned, it is advantageous if the first housing half-shell has at least one retaining element in the suction channel. In an advantageous embodiment of the invention, the first housing half shell also has at least one further retaining element outside the suction channel.

It can be provided, for example, that the first housing half-shell outside the suction channel has at least two holding elements, which are arranged symmetrically to a longitudinal axis of the suction channel.

The outside of the suction channel arranged holding elements of the first housing half shell are favorably designed channel-shaped.

It is advantageous if in each case a channel-shaped holding element of the first housing half-shell is arranged on both sides of the suction channel, which extends from a side wall of the suction channel to an outer wall of the first housing half-shell.

As mentioned above, the invention relates not only to a suction nozzle but also to a portable hard surface cleaning device with a suction nozzle of the above-mentioned type. The portable hard surface cleaning device according to the invention makes it possible to draw and absorb liquid from a hard surface, in particular from a window pane. It can be moved along the type of a manual Fensterabziehers on the hard surface to be cleaned, in particular along a window pane. It includes a suction unit, a dirty liquid tank and a separator for separating liquid from a sucked liquid-air mixture, and a suction nozzle of the type described above. By means of the suction unit, a suction flow can be generated in the region of the suction opening, under the effect of a mixture of liquid and Air is sucked into the suction channel via the suction opening. Liquid can be from the Liquid-air mixture separated and collected in the dirty liquid tank, and the sucked suction air can be discharged from the suction unit to the environment.

The portable hard surface cleaning device advantageously has a suction channel receiving shaft, which is pluggable connectable to the Saugkanalendabschnitt the suction nozzle and having a cooperating with the locking element of the suction nozzle further locking element.

As already mentioned, the further latching element may, for example, form a latching receptacle, and the latching element of the suction nozzle may form a latching hook which dips into the latching receptacle with a latching projection when the suction duct end section is connected to the suction channel receiving shaft.

The portable hard surface cleaning device preferably has a suction chamber in the flow direction upstream deposition chamber in which the separation device is arranged. On their way from the suction channel to the suction unit, the absorbed liquid-air mixture in the deposition chamber strikes the separation device at which the liquid is separated. The separated liquid may flow from the separation chamber into the dirty liquid tank, which is structurally separate from the deposition chamber. The deposition of the liquid thus takes place conveniently outside of the dirty liquid tank.

The portable hard surface cleaning device according to the invention preferably forms a portable window cleaning device.

The following description of a preferred embodiment of the invention serves in conjunction with the drawings for further explanation. Show it :

FIG. 1 is a perspective view of a hard surface cleaning device; FIG. 2 shows a sectional view of the hard surface cleaning device from FIG. 1;

FIG. 3 is a perspective view of a suction nozzle of the hard surface cleaning device;

FIG. 4 shows a perspective view of two housing half-shells of FIG

Suction nozzle of Figure 3 with a first flexible Abziehlippe formed on a first housing half-shell and a replaceable second flexible Abziehlippe;

Figure 5: a perspective view of the first housing half shell

diagonally from above;

Figure 6: a perspective view of the first housing half shell

diagonally from below;

FIG. 7 shows a longitudinal sectional view of the suction nozzle from FIG. 3.

In the drawing, an advantageous embodiment of a portable hard surface cleaning device according to the invention is shown schematically, which is generally occupied by the reference numeral 10. With the aid of the portable hard surface cleaning device 10, liquid can be drawn off and absorbed by a hard surface, in particular by a window pane. Mirror surfaces or tiled walls can also be cleaned by means of the portable hard surface cleaning device 10. The hard surface cleaning device 10 can be moved by the user in the manner of a manual Fensterabziehers on the hard surface. The hard surface cleaning device 10 forms a portable window cleaning device.

The hard surface cleaning device 10 comprises a base part 12, in which a suction unit 14 is arranged. The suction unit 14 comprises an electric motor 16 which rotatably drives a suction turbine 18. From the suction turbine 18 can Air can be drawn in via a turbine inlet line 20 of straight design in the illustrated embodiment. The turbine inlet duct 20 dips into a separation chamber 22. In the separation chamber 22, a separation element in the form of an impact wall is arranged at a distance from the turbine inlet line 20, which covers an inlet opening 26 of the turbine inlet line 20 and is curved substantially convexly in the direction away from the turbine inlet line 20.

On the side of the separation chamber facing away from the turbine inlet line 20, the base part 12 forms a suction channel receiving shaft 28, which receives a suction channel end section 30 of an advantageous embodiment of a suction nozzle 32 according to the invention. The suction nozzle 32 is shown schematically in the drawing and will be explained in more detail below.

The suction turbine 18 is separated from the separation chamber 22 by means of a first dividing wall 34, the turbine inlet line 20 passing through the first dividing wall 34. In the region of the first partition wall 34, the turbine inlet line 20 is surrounded by a sealing ring 36, with the aid of which it is ensured that liquid from the separation chamber 22 can not unintentionally reach the suction turbine 18 along the outside of the turbine inlet line 20.

At a distance from the first partition wall 34 and aligned parallel thereto, the base part 12 has a second partition wall 38. The suction turbine 18 is disposed between the first partition wall 34 and the second partition wall 38, and the electric motor 16 is disposed on the suction turbine 18 side facing away from the second partition 38 in a drive chamber 40 of the base member 12. A motor shaft 42 of the electric motor 16 passes through the second partition wall 38 and is rotatably connected to the suction turbine 18. By means of the motor shaft 42, the suction turbine 18 can be rotated.

In addition to the electric motor 16, a rechargeable battery 44 and a control, switching and charging electronics 46 are positioned in the drive chamber 40. The control, switching and charging electronics 46 acts with a In addition, the control, switching and charging electronics 46 control the speed of the electric motor 16 and the charging of the battery 44. The control, switching and charging electronics 46. and charging electronics 46 and the battery 44 are arranged on a common printed circuit board 49.

The drive chamber 40 is arranged in a handle 50 of the base part 12. The handle 50 can be grasped by the user with one hand.

The handle 50 extends to a bottom wall 52 of the base part 12, with which the portable hard surface cleaning device 10 can be placed on a footprint.

In addition to the base part 12 and the suction nozzle 32, the portable hard surface cleaning device 10 has a dirty liquid tank 54 which on

Base part 12 is held releasably without tools and into which a filling device 56 dips. Via the filling device 56, liquid can pass from the separation chamber 22 into the dirty liquid tank 54. The filling device 56 has a filler pipe 58 and a vent pipe 60, which are integrally connected to one another and immersed in the dirty liquid tank 54.

The dirty liquid tank 54 has an upper tank section 62 facing the separation chamber 22, which can be inserted into an upper recess 64 of the base part 12 via an upper opening 63, and a rear tank section 66, which via a lower opening 67 into a lower recess 68 of the Base part 12 can be used. The upper recess is disposed laterally adjacent to the suction turbine 18 and is in flow communication with the suction turbine 18 so that suction air from the suction turbine 18 via the upper recess 64 and the upper opening 63 can be discharged to the environment. A hopper 70 opens into the upper recess 64 and is integrally connected to the first partition wall 34. Via the filling funnel 70, liquid can pass from the separating chamber 22 into a trough-shaped depression 72 of the filling device 56, to which the filling tube 58

followed. The vent tube 60 extends parallel to the filler pipe 58, wherein it protrudes with its the dirty liquid tank 54 facing away from the upper end via the filler pipe 58 and dips into the hopper 70.

The lower recess 68 is arranged directly above the bottom wall 58, wherein the bottom wall 52 has resiliently deformable bottom wall sections in the region of the lower recess 68 and thereby exerts on the dirty fluid tank 54 a resilient holding force in the direction of a contact wall 74 arranged at a distance from the bottom wall 52 the rear tank section 66 abuts with its upper side. By means of complementarily designed latching elements, the rearward tank section 66 can be latched to the lower recess 68.

The dirty liquid tank 54, together with the handle 50, defines a gripping opening 75 of the portable hard surface cleaning device 10 which the user can grasp with his fingers while holding the portable hard surface cleaning device 10.

The suction nozzle 32 is shown separately in Figures 3 to 7. It has a suction nozzle housing 77 with a first housing half shell 76 and a second housing half shell 78, which are detachably connected to each other. In the illustrated embodiment, the two housing half shells 76, 78 are screwed together.

The two housing half shells 76, 78 define a suction channel 80 between them. With its rear end region facing the deposition chamber 20, the suction channel 80 forms the already mentioned suction channel end section 30, which can be inserted into the suction channel receiving shaft 28. The suction channel 80 extends between the two housing half-shells 76, 78 from a suction opening 82 to the Saugkanalendabschnitt 30th

The first housing half-shell 78 forms a bottom wall 84 of the suction channel 80 and first arcuately curved side walls 86, 88 of the suction channel 80. Similarly, the second housing half shell 76 forms a top wall 90 of the suction channel 80 and second arcuately curved side walls of the suction channel 80, the on the first side walls 86, 88 can be placed in a flow-tight manner.

To remove liquid from a hard surface to be cleaned, the suction nozzle 32 in the region of the suction opening 82, a first flexible Abziehlippe 94 and a second flexible Abziehlippe 92. The first Abziehlippe 94 is formed on the first housing half shell 78 and forms, together with the first housing half shell 78 an injection molded part with two components, namely with a hard component, which forms the first housing half shell 78, and with an elastomer component, which forms the first Abziehlippe 74.

The suction channel 80 has a centrally arranged longitudinal axis 102 and the second flexible Abziehlippe 92 is symmetrical to its parallel to the longitudinal axis 102 aligned center plane 96 configured and has a holding portion 98 which is formed by a substantially circular cross-section bead 100. The bead 100 extends transversely to the longitudinal axis 102 of the suction channel 80 along the entire length of the second Abziehlippe 92 and forms the rear end portion thereof. The front end region of the second Abziehlippe 92 is formed by a first Abziehkante 104 and a second Abziehkante 106, which extend along a bead 100 facing away from the end face 108 of the second Abziehlippe 92.

The first housing half-shell 78 has to define the second Abziehlippe 92 on a plurality of holding elements, wherein a plurality of first holding elements are arranged in the region of the suction channel and each form a Strömungsleitrippe 114. The flow guide ribs 114 are arranged in a fan shape. net, so that they have an increasing inclination to the longitudinal axis 102 with increasing distance from the longitudinal axis 102 of the suction channel 80. Relative to the longitudinal axis 102, all Strömungsleitrippen 114 are arranged at the same height. They are from the bottom wall 84 vertically upwards and have on their bottom wall 84 facing away from the upper edge 116 each have a recess 118 into which the bead 100 dips positive fit. The recesses 118 are arranged in a rear end region of the flow guide ribs 114 in relation to the flow direction, and in a section upstream of the recesses the upper edges 116 form a planar support surface for the second stripping lip 92. In cross section, the flow guide ribs 114 are wedge-shaped. With the help of Strömungsleitrippen 114, the second Abziehlippe 92 is supported in the region of the suction channel 80. The Strömungsleitrippen 114 are aerodynamically optimized in shape, wherein they taper in their first Abziehlippe 94 facing the front end portion. In addition to their support function, the flow guide ribs 114 allow a suction flow to be conducted with very low flow losses, so that a mixture of liquid and suction air can flow between the flow guide ribs 114 with only slight flow losses.

In addition to the flow guide ribs 114, the first housing half shell 78 has two further retaining elements for fixing the second removal lip 92. These further holding elements are configured in the form of a holding channel 120 and a holding channel 122 which extend outside of the suction channel in each case from a first side wall 86 or 88 of the suction channel 80 to an outer wall 124, 126 of the first housing half-shell 78.

The second housing half-shell 78 has a retaining element in the form of a retaining channel 110 for fixing the second leveling lip 92 to the suction opening 82. The retaining channel 110 receives an upper edge region 112 of the bead 100. In a corresponding manner, the two holders 120, 122, which are arranged outside the suction channel 80, and the flow guide ribs 114, which are arranged within the suction channel 80, each take a lower edge portion 128 of the bead 100, so that the second Abziehlippe 92 between the two housing halves 76, 78 is fixed.

To clean a hard surface, the portable hard surface cleaning device 10 can be moved with the second Abziehlippe 92 on a hard surface to be cleaned. The second Abziehlippe 92 may in this case first occupy a first position of use, in which the first Abziehkante 104 of the first Abziehlippe 94 faces, as shown for example in Figure 7. When cleaning the hard surface, the first peeling edge 104 slides in this first position of use along the hard surface to be cleaned. In particular, in cases where the hard surface has roughnesses, the first peeling edge 104 may be subject to wear. Upon reaching a maximum degree of wear, the cleaning effect achievable by means of the first peeling edge 104 can be impaired. The user then has the option of laterally pulling the second squeegee tab 92 out of the squeegee housing 77 via one of the outer walls 124, 126 to rotate 180 degrees relative to its central axis 130 and then retract it into the squeegee housing 77 via one of the outer walls 124, 126 , The second Abziehlippe 92 then occupies a second position of use, in which the second Abziehkante 106 of the first Abziehlipp 94 faces and can slide along the hard surface to be cleaned. The life of the second Abziehlippe 92 can be considerably extended.

As already mentioned, the Saugkanalendabschnitt 30 can be inserted into the Saugkanal- receiving shaft 28 of the base member 12. This becomes clear in particular from FIG. In order to avoid that the suction nozzle 32 unintentionally releases from the base part 12, the suction nozzle 32 can be latched to the base part 12. In the suction channel receiving shaft 28, a latching recess 134 is arranged for this purpose, and the first housing half-shell 78 forms a latching element in the form of a latching hook 136 in the region of the suction channel end section 30. The latching hook 136 has a spring tongue 138, which forms an elastically deformable wall section 139 of the suction channel 80 and is integrally connected to the first housing half shell 76. At his At the free end, the spring tongue 138 bears on the outside of the first housing half-shell 76 an outwardly projecting latching projection 140. This becomes clear in particular from FIG. The spring tongue 138, with the exception of the locking projection 140 facing away from the end, where it is integrally connected to the first housing half shell 76, surrounded by a U-shaped passage slot 142. This allows for insertion of the Saugkanal- end portion 30 in the Saugkanalaufnahmeschacht 28 a resilient movement of the spring tongue 138 until the locking projection 140 occupies a position equal to the catch recess 134 and engages in the latching recess 134. So that no suction air and no liquid can escape from the suction channel 80 via the passage slot 142, the spring tongue 138 on the inside of the suction channel 80 is encapsulated by the same elastomer component, which also forms the first removal lip 94. The elastomer component forms in the region of the passage slot 142 a U-shaped film hinge 143, which makes it possible to move the spring tongue 138 together with the latching projection 140 relative to the first housing half shell 76 forming hard component, but it is ensured that through the passage slot 142nd neither suction nor liquid can escape from the suction channel 80.

The elastomer component extends from the non-replaceable Abziehlippe 94 along the first side walls 86, 88 of the suction channel 80 to the latching hook 136. This is particularly clear from Figure 5.

The first housing half shell 78, in combination with the elastomer component, forms an injection molded part with a hard component and the elastomer component. The hard component preferably consists of a polypropylene or ABS material and the elastomer component is preferably made of thermoplastic elastomer material. The hard component forms the walls of the first housing half shell 78 including the walls of the suction channel 80 and the spring tongue 138, and the elastomer component forms the first Abziehlippe 92 and the film hinge 143th After the suction nozzle 32 is connected by inserting the Saugkanalendabschnitts 30 in the Saugkanalaufnahmeschacht 38 with the base part 12, the portable hard surface cleaner 10 can be moved along the hard surface like a manual Fensterabziehers for cleaning a hard surface, in particular a window or a glass door, by means of the second Abziehlippe 92 and this supporting first Abziehlippe 94 located on the hard surface liquid of the suction port 82 can be supplied. Via the suction channel 80, the liquid can be sucked together with air from the suction opening 82 and the separation chamber 20 are supplied. For this purpose, the deposition chamber 20 can be subjected to negative pressure by the suction unit 14 via the turbine inlet line 20. The mixture of liquid and air flows through the suction channel 80 and meets within the

Separating chamber 22 first on a suction channel at the end 30 held baffle plate 144, at which a part of the entrained liquid separates. Subsequently, the liquid-air mixture impinges on the baffle 24, at which the remaining entrained liquid separates, whereas the sucked air flows around the baffle plate 144 and the baffle 24 and passes through the turbine inlet line 20 to the suction turbine 18. From the suction turbine 18, the sucked air via an annular Luftauslassraum 146, the upper tank portion 62 within the upper recess 64 in

Surrounds circumferential direction, discharged to the outside.

The baffle 144 forms a first separator for separating liquid and the baffle 24 forms a second separator for separating liquid from the aspirated liquid-air mixture. The deposited in the deposition chamber 22 liquid can pass through the hopper 70 and the filler pipe 58 into the dirty liquid tank 54. If necessary, the dirty liquid tank 54 can be emptied. For this purpose, the user can remove the dirty liquid tank 54 together with the filling device 56 held thereon from the base part 12 by pulling the rear tank section 44 out of the lower recess 68 and subsequently removing the upper tank section 62 of the upper recess 64. Then the user can set the filling direction 56 from the dirty liquid tank 54 and empty the dirty liquid tank 54. The user can then insert the filling device 56 back into the dirty liquid tank 54 and insert it with the upper tank section 62 into the upper recess 64 and with the rear tank section 66 into the lower recess and engage with the base part 12.

If, after prolonged use of the portable hard surface cleaning device 10, the first or second peeling edge 104, 106 sliding along the hard surface to be cleaned are worn, the user has the option of turning the second peeling lip 92 180 ° about its central axis 130, as explained above in detail to turn so that then the previously unused Abziehkante 104 or 106 can be used.

The portable hard surface cleaning device 10 according to the invention is characterized by a long service life and can be moved by the user in the usual manner in the manner of a manual Fensterabziehers on the hard surface. The portable hard surface cleaning device 10 is characterized by low manufacturing costs.

Claims

PATENT APPLICATIONS

A suction nozzle for a portable hard surface cleaning device for drawing and sucking liquid from a hard surface, in particular a window pane, comprising a suction nozzle housing (77) having a first and a second housing half shell (76, 78) and having a suction opening (82) on the at least one flexible Abziehlippe (92, 94) is arranged and to which a suction channel (80) adjoins, which extends to a Saugkanalendabschnitt (30), wherein the Saugkanalend- section (30) a negative pressure source can be connected to form a suction flow and wherein at the Saugkanalendabschnitt (30) a latching element (136) is arranged, characterized in that the first housing half-shell (76) has an elastically deformable wall portion

(139), which forms the latching element (136).

2. Suction nozzle according to claim 1, characterized in that the two housing half-shells (76, 78) form between them the suction channel (80).

3. Suction nozzle according to claim 1 or 2, characterized in that the first housing half-shell (76) forms an injection molded part with a hard component and an elastomer component, wherein the elastically deformable wall portion (139) of the hard component in the form of a spring tongue (138) is configured, which is surrounded by a through-slot (142) penetrating the hard component, with the exception of a first end region, wherein the through-slot (142) is covered by the elastomer component molded onto the hard component.

4. Suction nozzle according to claim 3, characterized in that the spring tongue (138) at its free end outside a locking projection

(140) bears.

5. Suction nozzle according to claim 4, characterized in that the spring tongue (138) in combination with the latching projection (140) forms a locking hook formed from the hard component (136).

6. Suction nozzle according to one of claims 3 to 5, characterized in that the elastomer component in the region of the passage slot (142) is designed U-shaped.

7. Suction nozzle according to one of claims 3 to 6, characterized in that the elastomer component in the region of the passage slot (142) forms a film hinge (143).

8. Suction nozzle according to one of claims 3 to 7, characterized in that on the first housing half shell (76) is formed a first flexible Abziehlippe (94) of the elastomer component.

9. Suction nozzle according to one of claims 3 to 8, characterized in that the first housing half shell (76) side walls (86, 88) of the suction channel (80) is formed, wherein the side walls (86, 88) are coated with the elastomer component.

10. Suction nozzle according to one of the preceding claims, characterized in that between the first housing half shell (76) and the second housing half shell (78) a second flexible Abziehlippe (92) is interchangeably held, wherein the two housing half shells (76, 78) holding elements (110 , 114, 120, 122) and a holding portion (98) of the second flexible Abziehlippe (92) between the holding elements (110, 114, 120, 122) of the two housing halves (76, 78) is arranged and with the holding elements (110, 114, 120, 122) in each case forms an engagement, wherein at least one holding element (114) of the first housing half-shell (76) is arranged in the suction channel (80).

11. Suction nozzle according to claim 10, characterized in that the holding portion of the second flexible Abziehlippe (92) both in a first position of use of the second flexible Abziehlippe and in a 180 ° about its central axis (130) rotated second position of use of the second flexible Abziehlippe between the holding elements (110, 114, 120, 122) of the two housing half-shells (76, 78) is positionable.

12. Suction nozzle according to claim 10 or 11, characterized in that the second flexible Abziehlippe (92) is designed symmetrically to its central axis (96).

13. Suction nozzle according to claim 10, 11 or 12, characterized in that the holding portion (98) is designed as an extension and the holding elements (110, 114, 120, 122) of the two housing half-shells (76, 78) recesses (118), into which the extension dives.

14. Suction nozzle according to claim 13, characterized in that the extension is designed as a straight bead (100) which extends along the entire second flexible Abziehlippe (92).

15. Suction nozzle according to one of claims 10 to 14, characterized in that the at least one retaining element of the first housing half-shell (76), which is arranged in the suction channel (80), a Strömungsleitrippe (114) is formed.

16. Suction nozzle according to claim 15, characterized in that the first housing half shell (76) has a plurality of in the suction channel (80) arranged Strömungsleitrippen (114).

17. Suction nozzle according to claim 16, characterized in that the flow guide ribs (114) are arranged in a fan shape.

18. Suction nozzle according to claim 16 or 17, characterized in that the Strömungsleitrippen (114) relative to the longitudinal axis (102) of the suction channel (80) are arranged at the same height.

19. Suction nozzle according to one of claims 16 to 18, characterized in that the Strömungsleitrippen (114) in the region of the suction opening (82) are arranged.

20. Suction nozzle according to one of claims 16 to 18, characterized in that the flow guide ribs (114) taper counter to the flow direction of the suction flow.

21. Suction nozzle according to one of claims 16 to 20, characterized in that the flow guide ribs (114) on their first housing half shell (76) facing away from the upper edge each have a recess (118) into which the holding portion (98) of the second flexible Abziehlippe ( 82).

22. Suction nozzle according to claim 21, characterized in that the recesses (118) at the upper edge of the Strömungsleitrippen (114) in a rear end region relative to the flow direction of the Strömungsleitrippen (114) are arranged, and that the Strömungsleitrippen (114) in a Wells (114) upstream portion form a flat support surface for the second flexible Abziehlippe (92).

23. Suction nozzle according to one of claims 16 to 22, characterized in that the Strömungsleitrippen (114) are configured wedge-shaped in cross section.

24. Suction nozzle according to one of claims 16 to 23, characterized in that the second flexible Abziehlippe (92) relative to the flow direction of the suction flow over at least half of its extension on the Strömungsleitrippen (114) is seated.

25. Suction nozzle according to one of claims 10 to 24, characterized in that the first housing half-shell (76) outside the suction channel (80) has at least one further retaining element.

26. Suction nozzle according to claim 25, characterized in that the first housing half shell (76) outside the suction channel (80) has at least two further holding elements, which are arranged symmetrically to a longitudinal axis (102) of the suction channel (80).

27. Suction nozzle according to claim 25 or 26, characterized in that the at least one holding element, which is arranged outside of the suction channel (80), is configured channel-shaped.

28. Suction nozzle according to claim 27, characterized in that on both sides of the suction channel (80) in each case a groove-shaped holding element (120, 122) of the first housing half-shell (76) is arranged.

29. A portable hard surface cleaning device for removing and absorbing a liquid from a hard surface, in particular a window pane, with a suction unit (14), a dirty liquid tank (54) and a separation device (24, 144) for separating liquid from a sucked liquid-air mixture, and a suction nozzle (32) according to any one of the preceding claims.

30. Portable hard surface cleaning device according to claim 29, characterized

in that the portable hard surface cleaning device (10) has a suction channel receiving shaft (28) which can be plugged into the suction nozzle end section (30) of the suction nozzle (32) and a further latching element cooperating with the latching element (136) of the suction nozzle (32) ( 134). Portable hard surface cleaning device according to claim 29 or 30, characterized in that the portable hard surface cleaning device (10) has a suction unit (14) upstream of the deposition chamber (22) in which the separation device (24, 144) is arranged.