Nozzle adapter, nozzle, cleaning device and method

Abstract

The invention relates to a nozzle adapter (11) for arranging on a nozzle (10), in particular a spray extraction nozzle, for a cleaning device, in particular a spray extraction device, for cleaning a surface of a floor, wherein the nozzle adapter comprises a brush strip and a rubber lip, wherein the nozzle adapter comprises an upper part that can be detachably connected to the nozzle and a lower part that is mounted on the upper part so as to be pivotable about a pivot axis, wherein the brush strip and the rubber lip are arranged on the lower part.

Description

[0001] September 1, 2025

[0002] Robert Thomas SI / RTS-Oll-WO

[0003] Metall- und Elektrowerke GmbH & Co. KG Scu / Bmu / saa 57290 Neunkirchen

[0004] Nozzle adapter, nozzle, cleaning device and procedure

[0005] The invention relates to a nozzle adapter for arrangement on a nozzle, in particular a spray extraction nozzle, for a cleaning device, in particular a spray extraction device, for cleaning a floor surface, wherein the nozzle adapter comprises a brush strip and a rubber lip. The invention further relates to a nozzle, in particular a spray extraction nozzle, for a cleaning device, in particular a spray extraction device, for cleaning a floor surface, comprising such a nozzle adapter that can be arranged on the nozzle. The invention further relates to a cleaning device, in particular a spray extraction device, for cleaning a floor surface, comprising such a nozzle.Ultimately, the invention relates to a method for cleaning a surface of a floor with a cleaning device, in particular a spray extraction device, wherein the cleaning device comprises a nozzle, in particular a spray extraction nozzle, with a nozzle adapter that can be arranged on the nozzle, wherein the nozzle adapter comprises a brush strip and a rubber lip.

[0006] A nozzle adapter of the type described above is well known in the prior art and is designed for attachment to a nozzle, in particular a spray extraction nozzle, for a cleaning device, in particular a spray extraction device, for cleaning a floor surface. The nozzle itself, i.e., without the nozzle adapter attached to it, is generally designed for cleaning a carpeted floor. For this purpose, the nozzle's suction opening is typically formed by two rigid lips. If a hard floor surface is to be cleaned, the nozzle adapter designed for cleaning hard floors can be attached to the nozzle, the nozzle adapter typically comprising a brush strip and a rubber lip. The brush strip serves to loosen dirt, especially stubborn dirt.The rubber lip allows dirt and / or liquid applied to the surface for cleaning purposes via a spray nozzle to be pushed together, whereby the dirt and / or liquid can then be picked up via a suction opening of the nozzle adapter and fed through a suction channel of the nozzle adapter and a suction channel of the nozzle and, if necessary, a suction line, in particular a suction pipe, of the cleaning device, in particular a spray extraction device, to a container of the cleaning device, in particular a spray extraction device.

[0007] Such a nozzle adapter is known, for example, from EP 1 880 651 A2. The nozzle adapter can be detachably connected to a nozzle. The nozzle adapter is pivotally connected to the nozzle in order to pivot it from a rest position away from the nozzle's suction opening to a working position in front of the nozzle's suction opening, and vice versa. Thus, the nozzle adapter can be folded forward in front of the nozzle's suction opening for cleaning a hard floor area and folded away from the suction opening or removed from the nozzle for cleaning a carpeted area. In the working position, the nozzle adapter is pivotally fixed to the nozzle. An operator must adjust the nozzle adapter or the nozzle.The suction line, especially the suction tube, connected to the nozzle must therefore always be held at a design-specific working angle to the floor so that the brush strip and / or the rubber lip make contact with the surface for optimal cleaning results. If the design-specific working angle is not maintained, either the rubber lip cannot cleanly remove the liquid from the surface or the brush strip cannot scrub effectively. Depending on the operator's height, this can force them into an uncomfortable working position if the design-specific working angle is unsuitable for their height. Furthermore, cleaning under furniture or similar objects using the nozzle or nozzle adapter is only possible under difficult conditions or not at all, as this regularly requires a different working angle between the nozzle adapter or the nozzle itself.The nozzle adapter must be designed to work in a way that is significantly smaller than the design-dependent working angle required for optimal cleaning results, meaning the brush strip and / or rubber lip make insufficient or no contact with the surface. Furthermore, the nozzle adapter is designed to be moved across the surface exclusively in a reverse direction for cleaning, and not, for example, alternately in a forward and reverse direction as is common with conventional cleaning, scrubbing, and / or mopping. Operating the nozzle adapter is therefore not very intuitive for the user.

[0008] The present invention is therefore based on the objective of proposing a nozzle adapter, a nozzle, a cleaning device and a method which has improved operability and an increased range of applications.

[0009] This task is accomplished by a nozzle adapter with the features of the

[0010] Claim 1, a nozzle having the features of claim 10, a cleaning device having the features of claim 12 and a method having the features of claim 13 solved.

[0011] The nozzle adapter according to the invention for arrangement on a nozzle, in particular a spray extraction nozzle, for a cleaning device, in particular a spray extraction device, for cleaning a surface of a floor, comprises a brush strip and a rubber lip, wherein the nozzle adapter comprises an upper part detachably connectable to the nozzle and a lower part pivotably mounted on the upper part about a pivot axis, wherein the brush strip and the rubber lip are arranged on the lower part.

[0012] The nozzle adapter is designed for attachment to a nozzle, in particular a spray extraction nozzle, for a cleaning device, in particular a spray extraction device, for cleaning a floor surface. The nozzle can be designed to clean a floor surface of a first type, in particular carpet, upholstered flooring, or the like, so that the nozzle, when not attached to the nozzle adapter, can be used to clean a floor surface of a first type, in particular carpet, upholstered flooring, or the like. The nozzle adapter can also be designed to clean a floor surface of a second type, in particular hard flooring, so that the nozzle adapter, or the nozzle itself, when attached to the nozzle adapter, can be used to clean a floor surface of a second type, in particular hard flooring.For cleaning a surface of a floor of a different type, especially hard floors, the nozzle adapter can be attached to the nozzle. The nozzle adapter comprises a brush strip and a rubber lip. The brush strip is used for scrubbing, cleaning, and / or wiping the surface. Stubborn dirt can thus be loosened from the surface and more easily vacuumed up, particularly in conjunction with a cleaning liquid applied to the surface, especially via a spray nozzle. The rubber lip can be used to push dirt and / or a cleaning liquid, especially applied via a spray nozzle, together, allowing the dirt and / or liquid to then be vacuumed up.The nozzle adapter further comprises an upper part that can be detachably connected to the nozzle and a lower part that is pivotably mounted on the upper part about a pivot axis, with the brush strip and the rubber lip arranged on the lower part. Thus, when the nozzle adapter is positioned in front of the nozzle's suction opening, the lower part can pivot relative to the upper part during use of the nozzle adapter or the nozzle. This allows the lower part, with its brush strip and rubber lip, to remain aligned with the surface regardless of the working angle between the nozzle adapter or the nozzle, or a suction line (in particular a suction tube) connected to the nozzle, and the floor, in such a way that the brush strip and / or the rubber lip always make contact with the surface, ensuring optimal cleaning results.This allows operators of all heights to hold the nozzle adapter or nozzle at a comfortable working angle, ensuring a comfortable working position. The nozzle adapter also enables cleaning under furniture and similar obstacles. Therefore, the nozzle adapter offers improved usability and a wider range of applications. Furthermore, the swiveling mounting of the lower part on the upper part allows the nozzle adapter to be moved across the surface with a single, alternating forward and backward motion. This movement is similar to that used in conventional cleaning, scrubbing, and / or wiping, making the nozzle adapter intuitive for the operator. In this respect as well, the nozzle adapter offers improved usability.

[0013] The term "forward direction" refers to a direction from the rear of the nozzle adapter or nozzle to the front of the nozzle adapter or nozzle. The terms "front" and "rear" of the nozzle adapter or nozzle refer to the side facing away from or towards the operator during normal use of the nozzle adapter or nozzle. The term "reverse direction" refers to a direction opposite to the forward direction.

[0014] When using the nozzle adapter or nozzle, the nozzle adapter or nozzle can be moved across the surface in the forward direction and / or in the reverse direction, in particular alternately in the forward direction and / or the reverse direction.

[0015] Advantageously, the pivot axis extends transversely, preferably perpendicularly, to the forward or backward direction.

[0016] Preferably, the upper part is detachably connected to the nozzle in a pivot-fixed manner. The nozzle adapter arranged on the nozzle is then permanently positioned in front of the nozzle's suction opening. In a less preferred alternative embodiment of the nozzle adapter or the nozzle, the upper part can be detachably connected to the nozzle in a pivot-fixed manner about a further pivot axis, such that the nozzle adapter arranged on the nozzle can be pivoted from a rest position away from the nozzle's suction opening to a working position in front of the nozzle's suction opening and vice versa.

[0017] Advantageously, the rubber lip is arranged downstream of the brush strip when viewed in the forward direction. Advantageously, the rubber lip is arranged at a distance from the brush strip when viewed along the forward direction. Advantageously, the rubber lip extends parallel to the brush strip. Advantageously, the brush strip and the rubber lip extend transversely, preferably perpendicularly, to the forward direction or to a direction of movement of the nozzle adapter or nozzle when the nozzle adapter or nozzle is used, or parallel to the pivot axis.

[0018] Advantageously, when considering the lower part, in particular the rubber lip and / or brush strip, which is placed on the surface, the upper part is pivotable relative to the lower part depending on a working angle between the upper part or the nozzle adapter or the nozzle or a suction line connected to the nozzle, in particular a suction tube, and the floor, and / or the lower part is pivotable relative to the upper part depending on a movement of the nozzle adapter across the surface. Upon a first movement of the nozzle adapter across the surface in the forward direction, the lower part can perform a first pivoting movement in a first direction about the pivot axis, and upon a second movement of the nozzle adapter across the surface in the reverse direction, the lower part can perform a second pivoting movement in a second direction about the pivot axis.In a cross-sectional view where the forward direction extends from right to left, the first pivot direction can be counterclockwise and the second pivot direction clockwise.

[0019] Advantageously, the nozzle adapter can have at least one stop to limit a pivoting movement, in particular of the lower part and / or the upper part. The upper part can have a first stop and a second stop, and the lower part can have a first stop and a second stop. In a first end position of the lower part relative to the upper part, the first stop of the lower part can abut the first stop of the upper part, and in a second end position of the lower part relative to the upper part, the second stop of the lower part can abut the second stop of the upper part. Viewed in cross-section, with the lower part placed on the surface, in the first end position the rubber lip and the brush strip can be arranged perpendicular to the surface, and in the second end position the rubber lip and the brush strip can be arranged at an angle to the surface.By moving the nozzle adapter or nozzle forward across the surface, the lower part can move from the first end position to the second end position. By moving the nozzle adapter or nozzle backward across the surface, the lower part can move from the second end position to the first end position.

[0020] Advantageously, the nozzle adapter can have a suction channel, whereby the suction channel can extend, at least partially, between the brush strip and the rubber lip. When viewed from the nozzle adapter's position on the nozzle, the suction channel of the nozzle section can extend as an extension of a suction channel in the nozzle itself.

[0021] Advantageously, the rubber lip can have a profiled surface, preferably with a wave-like pattern, on one side and a smooth surface on the opposite side. The first side can face the front of the nozzle adapter or nozzle, or away from the brush strip. The wave profile of the surface can extend perpendicular to a longitudinal axis of the rubber lip, the surface, or the pivot axis. The second side can face the rear of the nozzle adapter or nozzle, or the brush strip. This design of the rubber lip prevents liquid applied to the surface from being pushed ahead of the rubber lip during forward movement and ensures that the liquid can be cleanly wiped off the surface and extracted via the suction channel of the nozzle adapter or nozzle.

[0022] Advantageously, the nozzle adapter can include an additional brush strip, which is preferably arranged on the upper part, with the rubber lip preferably positioned between the brush strip and the additional brush strip. The additional brush strip can then provide a scrubbing function when the nozzle adapter or nozzle moves forward and can also be used for targeted scrubbing when the additional brush strip is rigidly attached to the upper part. Furthermore, the additional brush strip facilitates forward movement of the nozzle adapter or nozzle and reduces feed forces. Advantageously, when viewed in the forward direction, the additional brush strip can be positioned downstream of the rubber lip. Advantageously, the additional brush strip is positioned at a distance from the rubber lip when viewed along the forward direction.Advantageously, the additional brush strip extends parallel to the brush strip and / or the rubber lip. Advantageously, the additional brush strip extends transversely, preferably perpendicularly, to the forward direction or direction of movement of the nozzle adapter or nozzle when the nozzle adapter or nozzle is used, or parallel to the pivot axis. The first side of the rubber lip may face the additional brush strip.

[0023] Advantageously, the nozzle adapter can include at least one, preferably two, sliding elements for sliding on the floor, with the sliding element preferably being arranged on the lower part. The sliding element can guide the nozzle adapter across the floor when it moves backward and / or automatically maintain the lower part in the orientation necessary for optimal cleaning results when the working angle between the upper part and the floor changes. Furthermore, the sliding element ensures that the rubber lip is pressed firmly enough against the surface so that the liquid can be cleanly wiped off and suctioned away by the suction channel. The sliding element also allows for a freer direction of movement than support or guide rollers, whose direction of travel is essentially predetermined.Furthermore, hair and / or lint cannot become entangled in the sliding element and potentially slow it down or cause it to jam, as would be the case with support or guide rollers. Advantageously, the sliding element is located on the back of the nozzle adapter. The sliding element can be designed as a non-slip pad.

[0024] Advantageously, the brush strip, the additional brush strip, the rubber lip, and / or the sliding element can be detachably connected to the nozzle adapter. This allows the operator to replace any of the aforementioned components, particularly in the event of wear, with a suitable new component or, depending on the floor surface, with a specially designed component. Furthermore, the detachability of the components enables their separate disposal. The lower part can have a first groove to which the rubber lip can be connected, particularly by positive locking and / or frictional locking. The lower part can have a second groove to which the brush strip can be connected, particularly by positive locking and / or frictional locking. The upper part can have a groove to which the additional brush strip can be connected, particularly by positive locking and / or frictional locking.The lower part can, preferably on the back, have at least one tongue with which the sliding element can be connected, in particular by positive locking and / or force locking, especially by attaching and / or snapping.

[0025] Advantageously, the nozzle can be designed to clean an area of ​​a floor of a first type, in particular a carpet, upholstered floor or the like, and the nozzle adapter can be designed to clean an area of ​​a floor of a second type, in particular a hard floor.

[0026] Advantageously, the nozzle adapter can include a cover part that can be attached to the upper part.

[0027] Advantageously, the top part, the bottom part and / or the cover part can be detachably connected to each other.

[0028] The nozzle according to the invention, in particular a spray extraction nozzle, for a cleaning device, in particular a spray extraction device, for cleaning a surface of a floor, has a nozzle adapter that can be arranged or is arranged on the nozzle as described above.

[0029] The nozzle may have a suction channel extending through it. At a distal end, the nozzle may have a suction opening. Furthermore, at a proximal end, the nozzle may have a connection for attaching a suction line, in particular a suction pipe, through which the nozzle can be connected to a container of the cleaning device for collecting the suctioned dirty liquid. The nozzle may also have a spray nozzle, preferably located on its rear side, for dispensing a liquid onto the surface. The spray nozzle may be inserted into a locking jaw of the nozzle. The spray nozzle may be connected to a liquid line of the nozzle. Via the liquid line, the nozzle may be connected to a conveying device of the cleaning device for conveying the liquid to the spray nozzle.The spray nozzle can be oriented downwards between the nozzle's guide elements, preventing the spray jet from splashing laterally beyond these elements. This prevents walls and furniture from being wetted when working near them. The nozzle adapter can be positioned in front of the nozzle's suction opening, allowing a suction channel extending through the adapter to align with the nozzle's suction channel. The nozzle adapter can have a suction opening at its distal end and connect to the nozzle at its proximal end.

[0030] Advantageously, the nozzle can include a locking device by means of which the nozzle adapter can be locked to the nozzle. The locking device can have an axle, preferably formed in two parts, wherein at least one part of the axle can be repositioned. The repositioning of the pivoting axle can be effected by an actuating device of the locking device. When considering the nozzle adapter arranged on the nozzle, the axle can engage at each end in bores formed at the ends of the upper part. The degree of repositioning of the axle can be set such that the axle can be retracted from at least one of the bores. By pressing in the actuating device, the axle can be retracted from at least one of the bores receiving the axle.If the nozzle adapter is to be removed from the nozzle, the actuating device can be pressed in and subsequently the nozzle adapter pulled off the nozzle. Optionally, particularly if the upper part can be detachably connected to the nozzle in a pivotable manner about the further pivot axis, the nozzle or the locking device can include a locking device for detachably locking the nozzle adapter in the working position. The locking device can be moved downwards, preferably against a force from springs of the locking device. The locking device can be designed with hooks that, when the locking device is pushed downwards, can engage with optionally provided counter-hooks of the nozzle adapter. By means of the locking device orThe hooks, engaged with the counter-hooks when the locking device is pushed downwards, allow the nozzle adapter, particularly its upper part, to be held securely in the working position in front of the nozzle's suction opening. Moving the locking device upwards releases the engagement between the hooks and counter-hooks, allowing the nozzle adapter to be pivoted into its rest position away from the nozzle's suction opening or removed from the nozzle altogether.

[0031] Advantageously, the nozzle can have an essentially triangular shape with lateral projections.

[0032] The cleaning device according to the invention, in particular a spray extraction device, for cleaning a surface of a floor, comprises a nozzle as described above.

[0033] The cleaning device can be a vacuum cleaner, in particular a wet / dry vacuum cleaner, a spray extraction machine, or the like. The cleaning device can be designed for dry cleaning and / or wet cleaning of a floor surface.

[0034] The cleaning device can comprise a housing and / or a turbine, preferably arranged within the housing. The nozzle can be connected to the housing via a suction line or be arranged or formed directly on the housing. A suction airflow can be generated in the suction line by means of the turbine. Furthermore, the cleaning device can comprise a conveying device, preferably arranged within the housing, in particular a pump, for conveying a liquid; a liquid line connecting the conveying device to the nozzle for conveying the liquid to the nozzle, in particular a spray nozzle; and / or a container and / or filter, preferably arranged within the housing, for collecting the extracted liquid and / or dirt. The suction line can connect the nozzle to the container.

[0035] In the inventive method for cleaning a surface of a floor with a cleaning device, in particular a spray extraction device, the cleaning device comprises a nozzle, in particular a spray extraction nozzle, with a nozzle adapter that can be arranged or is arranged on the nozzle, wherein the nozzle adapter comprises a brush strip and a rubber lip, wherein the nozzle adapter comprises an upper part detachably connected to the nozzle and a lower part pivotably mounted on the upper part about a pivot axis, wherein the brush strip and the rubber lip are arranged on the lower part.

[0036] For the advantageous effects of the method according to the invention, reference is made to the description of advantages of the nozzle adapter according to the invention.

[0037] Further advantageous embodiments of the method result from the feature descriptions of the dependent claims relating back to device claim 1.

[0038] A preferred embodiment of the invention is explained in more detail below with reference to the accompanying drawings.

[0039] They show:

[0040] Fig. 1 shows a perspective front view of a nozzle with a nozzle adapter attached to the nozzle;

[0041] Fig. 2 is a perspective rear view of the nozzle;

[0042] Fig. 3 shows a side view of the nozzle at a first working angle in partial section;

[0043] Fig. 4 shows a side view of the nozzle at a second working angle in section;

[0044] Fig. 5 shows a perspective front view of the nozzle adapter;

[0045] Fig. 6 shows a perspective rear view of the nozzle adapter;

[0046] Fig. 7 shows a perspective view from below of the nozzle adapter;

[0047] Fig. 8 is an exploded view of the nozzle adapter; Fig. 9 is a side view of the nozzle adapter in a first end position of a lower part of the nozzle adapter in relation to an upper part of the nozzle adapter in section;

[0048] Fig. 10 shows a side view of the nozzle adapter in a second end position of the lower part in relation to the upper part in section.

[0049] A combined view of Figures 1 to 4 shows a nozzle 10 designed as a spray extraction nozzle for a cleaning device (not shown here) designed as a spray extraction unit for cleaning an area of ​​a floor (also not shown here) with a nozzle adapter 11 arranged on the nozzle 10, which is additionally shown in detail in Figures 5 to 10. The nozzle 10 has a suction channel 12 extending through the nozzle 10 and a suction opening (not shown here) at a distal end of the nozzle 10. Furthermore, the nozzle 10 has a connection 13 at a proximal end for connecting a suction line, in particular a suction pipe (not shown here), via which the nozzle 10 can be connected to a container of the cleaning device (not shown here) for collecting the suctioned dirty liquid.Furthermore, the nozzle 10 has a spray nozzle 15 arranged on a rear side 14 of the nozzle 10 for dispensing a liquid onto the surface. The spray nozzle 15, which is inserted into a locking jaw of the nozzle 10, is connected to a liquid line 16 of the nozzle 10. The nozzle 10 can be connected via the liquid line 16 to a conveying device of the cleaning device (not shown here) for conveying the liquid to the spray nozzle 15. The spray nozzle 15 is directed downwards between guide elements 17, 18 of the nozzle 10, so that a spray jet cannot be sprayed laterally beyond the guide elements 17, 18. This prevents walls and furniture from being wetted when working near them with the nozzle 10. The nozzle 10 has a substantially triangular shape with lateral projections 19, 20.The nozzle adapter 11 is positioned in front of the suction opening of the nozzle 10, such that a suction channel 21 extending through the nozzle adapter 11 is an extension of the suction channel 12 of the nozzle 10. The nozzle adapter 11 has a suction opening 22 at a distal end. A proximal end of the nozzle adapter 11 can be connected to the nozzle 10. The nozzle adapter 1 1 comprises an upper part 23 that can be pivotally and detachably connected to the nozzle 10 and a lower part 25 that is pivotally mounted on the upper part 23 about a pivot axis 24. The nozzle adapter 1 1 further comprises a cover part 26 arranged on the upper part 23. The upper part 23 has a bore 29, 30 at each of its ends 27, 28, which serve to fasten the nozzle adapter 1 1 to the nozzle 10. The nozzle 10 comprises a locking device 3 1 by means of which the nozzle adapter 1 1 can be locked to the nozzle 10.The locking device 31 comprises an axle 32 via which the nozzle adapter 11 is connected to the nozzle 10, the axle 32 engaging at its ends in bores 29, 30. By pressing an actuating device 33 of the locking device 31, the axle 32 can be retracted from at least one of the bores 29, 30 that receive the axle 32. If the nozzle adapter 11 is to be removed from the nozzle 10, the actuating device 33 can be pressed in and subsequently the nozzle adapter 11 pulled off the nozzle 10. Furthermore, the upper part has cutouts 34, 35, 36, 60 so that ribs formed on the front and rear of the nozzle 10 (not shown here) do not interfere with the attachment of the nozzle adapter 11 to the nozzle 10. However, the ribs and the notches 34, 35, 36, 60 can also be omitted.

[0050] The nozzle 10 is designed for cleaning a carpeted area. In other words, the nozzle 10, when used with the nozzle adapter 11 (not attached to the nozzle 10), is intended for cleaning a carpeted area. For this purpose, the nozzle 10 has two rigid lips 37, 38, which are formed by a nozzle body 39 of the nozzle 10 and constitute the suction opening of the nozzle 10. The nozzle adapter 11 is designed for cleaning a hard floor. In other words, the nozzle 10, when used with the cleaning adapter 11 attached to the nozzle 10, is intended for cleaning a hard floor. The nozzle adapter 11 comprises a brush strip 40, another brush strip 41, and a rubber lip 42.

[0051] The brush strip 40 and the rubber lip 42 are arranged on the lower part 25, with the further brush strip 41 being arranged on the upper part 23. The rubber lip 42 is arranged between the brush strip 40 and the further brush strip 41. Viewed in a forward direction 43, which is directed from the rear side 14 facing the operator of the nozzle 10 during normal use to a front side 44 of the nozzle 10 facing away from the operator during normal use, the rubber lip 42 is arranged downstream of the brush strip 40 and the further brush strip 41 is arranged downstream of the rubber lip 42. The rubber lip 42 is spaced apart from the brush strip 40 when viewed along the forward direction 43, and the further brush strip 41 is also spaced apart from the rubber lip 42 when viewed along the forward direction 43.The rubber lip 42, the brush strip 40, and the further brush strip 41 each extend parallel to each other and each perpendicular to the forward direction 43 or parallel to the pivot axis 24. The suction channel 21 of the nozzle adapter 1 extends sectionally between the brush strip 40 and the rubber lip 42. The rubber lip 42 has a wave-shaped profiled surface on one side 45 of the rubber lip 42 facing the further brush strip 41, with a wave profile 46 extending perpendicular to a longitudinal axis of the rubber lip 42 (not shown here), or of the surface, or of the pivot axis 24, and a smooth surface on one side 47 of the rubber lip 42 opposite the first side 45 and facing the brush strip 40. The first side 45 is arranged in the forward direction 43, while the second side 47 is arranged in a reverse direction 48 opposite to the forward direction 43.The nozzle adapter 1 1 further comprises two sliding elements 49, 50 arranged on the lower part 25 for sliding on the floor. The brush strip 40, the additional brush strip 41, the rubber lip 42, and the sliding elements 49, 50 are detachably connected to the nozzle adapter 1 1. The rubber lip 42 and the brush strip 40 are each attached to a groove 51, 52 of the lower part 25, with the additional brush strip 41 being attached to a groove 53 of the upper part 23. The lower part 25 has tongues 54, 55 on its rear side, onto which the sliding elements 49, 50 are placed and locked in place.

[0052] When using the nozzle 10 or the nozzle 10 with the nozzle adapter 1 1 attached to the nozzle 10, the nozzle 10 or the nozzle 10 with the nozzle adapter 1 1 attached to the nozzle 10 is moved across the surface in the forward direction 43 and / or the reverse direction 48. The lower part 25 is placed on the surface in such a way that the brush strip 40, the further brush strip 41 and / or the rubber lip 42 contact the surface. Depending on the movement of the nozzle adapter 1 1 across the surface, the lower part 25 is pivotable relative to the upper part 23. A pivoting movement of the lower part 25 is limited by stops 56, 57, 58, 59 of the nozzle adapter 1 1. In a first end position of the lower part 25 with respect to the upper part 23, as shown in Fig. 9, a first stop 58 of the lower part 25 abuts a first stop 59 of the upper part 23. In a second end position of the lower part 25 with respect to the upper part 23, as shown in Fig.As shown in Figure 10, a second stop 56 of the lower part 25 abuts a second stop 57 of the upper part 23. By moving the nozzle 10 with the nozzle adapter 11 arranged on the nozzle 10 across the surface in the forward direction 43, the lower part 25 can be moved from the first end position to the second end position, and the lower part 25 can be moved from the second end position to the first end position by moving the nozzle 10 with the nozzle adapter 11 arranged on the nozzle 10 across the surface in the reverse direction 48. By alternately moving the nozzle 10 with the nozzle adapter 11 arranged on the nozzle 10 across the surface in the forward direction 43 and the reverse direction 48, as is known from conventional scrubbing, cleaning and / or wiping, the lower part 25 is continuously moved back and forth between the first end position and the second end position. The operation is therefore intuitive.

[0053] Furthermore, the upper part 23 can be pivoted relative to the lower part 25 depending on a working angle (not shown here) between the nozzle 10 or the nozzle adapter 11 and the ground. The working angle is understood to be a tilting angle of the nozzle 10 or the nozzle adapter 11 relative to the ground. Fig. 3 shows the nozzle 10 or the nozzle adapter 11 or the upper part 23 at a minimum working angle, while Fig. 4 shows the nozzle 10 or the nozzle adapter 11 or the upper part 23 at a maximum working angle. By tilting the nozzle 10 or the nozzle adapter 11 or the upper part 23, the working angle between the minimum and maximum working angles can be freely selected. The working angle, or pivoting movement, of the upper part 23 is also limited by the stops 56, 57, 58, and 59.The lower part 25 remains aligned with the surface at all times to achieve optimal cleaning results, which is further facilitated by the sliding elements 49 and 50. This allows the operator to select a working angle for the nozzle 10 or nozzle adapter 11, depending on their height, enabling them to assume a comfortable working position. By selecting a relatively small working angle, it is also possible to clean under furniture or similar objects.

Claims

September 1, 2025 Robert Thomas SI / RTS-Oll-WO Metall- und Elektrowerke GmbH & Co. KG Scu / Bmu 57290 Neunkirchen Patent claims 1. Nozzle adapter (11) for arrangement on a nozzle (10), in particular a spray extraction nozzle, for a cleaning device, in particular a spray extraction device, for cleaning a surface of a floor, wherein the nozzle adapter comprises a brush strip (40) and a rubber lip (42), characterized in that the nozzle adapter comprises an upper part (23) detachably connectable to the nozzle and a lower part (25) pivotably mounted on the upper part about a pivot axis (24), wherein the brush strip and the rubber lip are arranged on the lower part.

2. Nozzle adapter according to claim 1, characterized in that, when the lower part (25) is placed on the surface, the upper part (23) is pivotable relative to the lower part depending on a working angle between the upper part and the ground and / or the lower part is pivotable relative to the upper part depending on a movement of the nozzle adapter (11) over the surface.

3. Nozzle adapter according to claim 1 or 2, characterized in that the nozzle adapter (11) has at least one stop (56, 57, 58, 59) for limiting a pivoting movement.

4. Nozzle adapter according to one of the preceding claims, characterized in that the nozzle adapter (11) has a suction channel (21), wherein the suction channel extends at least partially between the brush strip (40) and the rubber lip (42).

5. Nozzle adapter according to one of the preceding claims, characterized in that the rubber lip (42) has a profiled surface, preferably corrugated, on a first side (45) of the rubber lip and a smooth surface on a second side (47) of the rubber lip opposite the first side.

6. Nozzle adapter according to one of the preceding claims, characterized in that the brush adapter (11) comprises a further brush strip (41), wherein the further brush strip is preferably arranged on the upper part (23), wherein the rubber lip (42) is preferably arranged between the brush strip (40) and the further brush strip.

7. Nozzle adapter according to one of the preceding claims, characterized in that the nozzle adapter (11) comprises at least one, preferably two, sliding elements (49, 50) for sliding on the floor, wherein the sliding element is preferably arranged on the lower part (25).

8. Nozzle adapter at least according to claim 1, 6 or 7, characterized in that the brush strip (40), the further brush strip (41), the rubber lip (42) and / or the sliding element (49, 50) is detachably connected to the nozzle adapter (11).

9. Nozzle adapter according to one of the preceding claims, characterized in that the nozzle (10) is designed for cleaning a surface of a floor of a first type, in particular a carpet, and the nozzle adapter (11) is designed for cleaning a surface of a floor of a second type, in particular a hard floor.

10. Nozzle (10), in particular spray extraction nozzle, for a cleaning device, in particular spray extraction device, for cleaning a surface of a floor with a nozzle adapter (11) that can be arranged on the nozzle according to one of the preceding claims.

11. Nozzle according to claim 10, characterized in that the nozzle (10) comprises a locking device (31) by means of which the nozzle adapter (11) can be locked to the nozzle.

12. Cleaning device, in particular spray extraction device, for cleaning a surface of a floor, comprising a nozzle (10) according to one of claims 10 or 11.

13. Method for cleaning a surface of a floor with a cleaning device, in particular a spray extraction device, wherein the cleaning device has a nozzle (10), in particular a spray extraction nozzle, with comprising a nozzle adapter (11) which can be arranged on the nozzle, wherein the nozzle adapter comprises a brush strip (40) and a rubber lip (42), characterized in that the nozzle adapter comprises an upper part (23) which is detachably connected to the nozzle and a lower part (25) which is pivotably mounted on the upper part about a pivot axis (24), wherein the brush strip and the rubber lip are arranged on the lower part.

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