WO2015161876A1

WO2015161876A1 - Suction nozzle and hard-surface-cleaning appliance

Info

Publication number: WO2015161876A1
Application number: PCT/EP2014/058274
Authority: WO
Inventors: Bernd Gruber; Christoph FROHMADER; Daniel KROHM; Christian Stewen; Michael Scharmacher; Sandra Bartel; Martin Schmidgall
Original assignee: Alfred Kärcher Gmbh & Co. Kg
Priority date: 2014-04-23
Filing date: 2014-04-23
Publication date: 2015-10-29
Also published as: EP3133972B1; CN106231969B; CN106231969A; EP3133972A1

Abstract

In order for a suction nozzle (30; 30'; 30''), in particular one intended for a hard-surface-cleaning appliance (10) comprising a suction-extraction device (18), which suction nozzle (30; 30'; 30'') has a suction opening (40; 40'; 40''), which is followed by a suction channel (36), which can be connected to the suction-extraction device (18) by way of its end (38) directed away from the suction opening (40; 40'; 40''), wherein the suction nozzle (30; 30'; 30'') has at least one flexible squeegeeing lip (42; 44; 42'; 44'; 42''; 44''), which extends along the suction opening (40; 40'; 40'') and has a squeegeeing edge (56), which is oriented away from the suction opening (40; 40'; 40'') and extends in the direction (66; 66'; 66'') of the same, and two side edges (60; 62; 60'; 62'; 60''; 62''), which are oriented away from one another and run transversely to the squeegeeing edge (56), to be improved such that it is easier to handle, it is proposed that the suction nozzle should comprise a spacing device having at least one spacing element which, in a spacing position, projects laterally beyond at least one of the two side edges (60; 62; 60'; 62'; 60''; 62''). The invention also proposes an improved hard-surface-cleaning appliance (10).

Description

Suction nozzle and hard surface cleaning device

The present invention relates to a suction nozzle, in particular for a suction device comprising a hard surface cleaning device, which suction nozzle has a suction opening, which is followed by a suction channel, which is connected to the suction opening facing away from the end with the suction device, wherein the suction nozzle has at least one flexible wiper lip, which extends along the suction opening and has a side facing away from the suction opening and extending in the same direction scraper edge and two facing away from each other, extending transversely to the scraping edge side edges.

Furthermore, the present invention relates to a hard surface cleaning device, in particular a hard surface cleaning hand device, with a suction device and a suction nozzle cooperating with the suction device, which has a suction opening, which is followed by a suction channel connected to the suction opening facing away from the end connected to the suction device or connected wherein the suction nozzle has at least one flexible wiper lip which extends along the suction opening and has a wiping edge pointing away from the suction opening and extending in the direction thereof and two side edges pointing away from each other and extending transversely to the wiping edge.

A suction nozzle and a hard surface cleaning device in the form of a portable hard surface cleaning handset of the type described above are known for example from WO 2009/086893 A2. The suction nozzle of the hard surface cleaning device described therein has two cooperating wiper lips extending along the suction opening and held in corresponding recesses. The two wiper lips extend over the entire width of the suction nozzle. When using the known hard surface cleaning device, in particular when cleaning windows, then occurs when the surface to be cleaned, such as the write, is laterally surrounded by a seal or the like, the problem that in the edge region of a window frame, the wiper lip laterally with a Side edge over the seal or a silicone joint can strip. In this case, the wiper lip deforms at the edge, so that, for example, the cleaning liquid to be removed with the hard surface cleaning device, for example water, can not be completely removed. Rather, remains on the surface to be cleaned, such as the disc, in addition to the seal or silicone joint, a residual amount of cleaning fluid, so that overall no optimal cleaning result can be achieved. To avoid this problem, a user must very carefully move the hard surface cleaning device with the suction nozzle along the edge region of the window frame in order to avoid unwanted deformation of the at least one wiper lip in its edge region and the concomitant retention of cleaning liquid on the surface to be cleaned.

It is therefore an object of the present invention to improve a suction nozzle and a hard surface cleaning device of the type described above so that their handling is simplified.

This object is achieved in a suction nozzle of the type described above according to the invention in that the suction nozzle comprises a Abstandshaiteeinrichtung with at least one spacer element which projects laterally in a distance holding position on at least one of the two side edges.

With such a suction nozzle, it is possible, for example on a window frame in which the glazing is separated by a silicone joint or other sealing element from the frame to apply the suction nozzle of the hard surface cleaning device to the frame and adjacent to the frame to pull parallel to this over the window surface. By the spacer element ensures that the side edge of the wiper lip can not be deformed in the region of the sealing element. Thus it can be avoided that a residual amount of water remains in the region of the sealing element, whereby the cleaning result would be impaired. By providing the spacer means the handling of the suction nozzle and the hard surface cleaning device is improved in a simple manner, since the suction nozzle with the wiper lip does not have to be guided exactly as previously manually by hand on the sealing element, but simply guided the at least one spacer element along the frame of the window along can be without the undesirable effect of deforming or bending of the wiper lip in the region of the side edge can occur. The suction opening of the suction nozzle may in particular be elongated. Furthermore, in the holding position, the spacer element may protrude laterally beyond at least one of the two side edges of the wiper lip, in particular in a direction defined by the wiping edge.

The object stated in the introduction is achieved according to the invention in a hard surface cleaning device of the type described above in that the hard surface cleaning device comprises a spacer device with at least one spacer element which projects laterally over at least one of the two side edges in a spacer position.

The spacer device therefore does not necessarily have to be arranged or formed on the suction nozzle, but can also be arranged or formed in a varied and suitable manner on the hard surface cleaning device itself, for example a housing thereof. By means of the spacer device, as described above in connection with the improved suction nozzle, the user of the hard surface cleaning device can easily maintain a distance, for example between a window frame and the area to be cleaned separated therefrom by a sealing element, for example a silicone joint. A deformation of the side edges of the at least one wiper lip in the corner region between the wiper edge and the side edge can thus be avoided in a simple manner. The hard surface chenreinigungsgerät may be formed in particular in the form of a portable and / or network-independent handheld device

It is advantageous if the hard surface cleaning device comprises a housing in which the suction device is arranged or formed, wherein the suction nozzle is coupled in a working position with the housing and is separated in a cleaning position from the housing. In particular, further devices of the hard surface cleaning device can be accommodated protected in the housing, for example a collecting container for the items to be cleaned or a battery, in particular a rechargeable battery.

According to a further preferred embodiment of the invention can be provided that the Abstandshaiteeinrichtung is arranged or formed on the suction nozzle and / or on a housing of the hard surface cleaning device. This embodiment makes it possible, in particular, to combine hard surface cleaning devices with a spacer device with suction nozzles which do not comprise such a spacer device. Furthermore, optional suction nozzles of a hard surface cleaning device without Abstandshaiteeinrichtung can be replaced by suction nozzles with spacer means.

Of course, it is alternatively also conceivable to arrange or form a spacer stringing device both on the suction nozzle and on the suction device. Thus, two spacer devices, one at the suction nozzle and one at the housing of the hard surface cleaning device, can optionally also be provided in order to achieve optimal lateral guidance, in particular in the case of very large objects to be cleaned.

In particular, each of the two side edges can be assigned a spacer element. The at least one spacer element may for example be arranged immovably on the suction nozzle or on the housing of the hard surface cleaning device and protrude laterally beyond the side edge in a defined, unchangeable manner. It is favorable if the at least one spacer element has a side face pointing away from the wiper lip, which has a spacing in the spacer holding position from the at least one of the two side edges in the direction defined by the wiper edge. Thus, a defined distance between the side edge and the side surface can be easily adjusted. Optionally, the side surface may be made of or coated with a low friction material such as polyoxymethylene (POM). Alternatively, it may also be made of or coated with such a soft and scratch-resistant material, such as a thermoplastic elastomer (TPE). The side surface may for example also form part of a roller, a wheel or a ball or the at least one spacer element may be in the form of a roller, a wheel or a ball. In particular, these can also be produced from or coated with the materials mentioned in order to be able to use the suction nozzle and the hard surface cleaning device without causing damage, for example to a window frame.

It is advantageous if, in a basic position, the at least one spacer element reaches a maximum of at least one of the two side edges. This makes it possible to clean even hard surfaces, such as glass, which are not surrounded by a sealing joint or a sealing element, so that in particular can be cleaned up to a frame zoom.

Particularly good cleaning results can be achieved if the suction opening is at least partially rectilinear or curved.

The cleaning effect of the suction nozzle and the hard surface cleaning device can be further improved if the suction nozzle comprises two flexible wiper lips, each having a wiper edge and two side edges, wherein the two wiper lips define the suction opening therebetween. In particular, the two wiper lips may be arranged such that, in a basic position in which the device is not provided with a surface to be cleaned in Contact is, with the scraping edges substantially abut each other or release only a narrow suction gap between them.

Conveniently, the two side edges of the at least one wiper lip each define a side edge plane. Thus, the suction nozzle can optimally along flat edges or surfaces, such as a window frame, along.

The handling and orientation of the suction nozzle and the hard surface cleaning device can be further improved if the two side edge planes run parallel or substantially parallel to one another.

Advantageously, the side surface of the at least one spacer element defines a side surface plane. For example, the suction nozzle can be guided flatly along a frame.

The guidance of the suction nozzle, for example along a frame, can be improved in a simple manner in particular in that the side surface plane runs parallel or substantially parallel to at least one side edge plane.

According to a further preferred embodiment of the invention it can be provided that the at least one spacer element is movably and / or removably arranged or formed. In particular, if it is designed removable, it can be replaced with other spacer elements, in particular define a different distance to the side edge of the wiper lip or made of a different material or coated with a different material. Thus, a distance to the side edge of the wiper lip can be adjusted in a desired manner by replacing the at least one spacer element. As mentioned, the at least one spacer element can also be arranged or designed to be movable. For example, it can be attached to the suction nozzle or to the housing of the hard surface cleaning device by a linear movement, a folding movement. tion, a pivoting movement, an eccentric movement are adjusted relative to the suction nozzle and / or the housing in order to adjust a distance between the side edge and a projecting over this projecting portion of the at least one spacer element. Alternatively, it can also be provided to form the spacer element permanently for a fixed edge distance. This can be achieved, for example, by projecting the suction nozzle housing or the housing of the hard surface cleaning device laterally in the desired manner over the side edge of the wiper lip. If, for example, the geometry of the seals on all windows and doors is identical in a house, a spacer element formed integrally with the suction nozzle or the housing of the hard surface cleaning device can for example be cut once so as to set the desired spacing.

It is advantageous if the spacer device comprises an adjusting device for arranging the at least one spacer element in a first spacer position and in at least one second spacer position. With the adjusting device can thus be easily adjusted, for example, to a window frame, a distance of the side edge and changed if necessary. The adjusting device may in particular be designed to linearly move, fold, pivot or eccentrically move the at least one spacer element.

It is favorable if the first spacer position defines the basic position or if, in the first spacer position, the at least one spacer element projects beyond at least one of the two lateral edges in a direction defined by the wiper edge. Depending on the configuration of the suction nozzle, the at least one spacer element can thus be positioned, for example, such that it defines a side surface or the like which is arranged at the same height as at least one side edge of the wiper lip or else protrudes beyond the latter. It is advantageous if, in the second spacer position, the at least one spacer element projects in a direction defined by the stripper edge over at least one of the two side edges. This configuration makes it possible, in particular, to set a distance, for example between a window frame and the side edge of the wiper lip, at least in the second spacer position.

Conveniently, two spacer elements are provided and associated with each spacer element own adjusting device. For example, the two spacer elements can each be assigned to one of the two side edges of the wiper lip, so that a distance, for example, to a window frame, can be adjusted by means of the two spacer elements, virtually to the right and left of the wiper lip. In order to set different distances, it is advantageous if each spacer element is assigned its own adjusting device.

Preferably, the adjusting device is designed for arranging the at least one spacer element in defined spacing positions. For example, such an adjustment device optionally also makes it possible to remove the at least one spacer element from the suction nozzle or the housing of the hard surface cleaning device and to exchange it for another spacer element. Optionally, the at least one spacer element can also be brought into defined spacing positions via the adjusting device, for example by being connected in different positions with the suction nozzle or the housing of the hard surface cleaning device.

Preferably, distances between two adjacent defined spacing positions are different or identical. This means in particular that the at least one spacer element can be brought from a first into an adjacent second spacer position and from there into an adjacent further one, wherein the distances from outer edges of the at least a spacer element in the different positions may be identical or different.

In a particularly simple manner, the at least one spacer element can be brought into defined spacing positions, if the adjusting device comprises a Rastverstellmechanismus with first and second locking elements, which are in a detent position engaged and disengaged in an adjustment position, and if the first and second Locking elements are assigned on the one hand to the at least one spacer element and on the other hand, the suction nozzle or the housing. A change in a position of the at least one spacer element relative to the suction nozzle or to the housing can then be achieved, for example, by bringing the first and second locking elements of the locking position in the adjustment position and then the at least one spacer element is moved relative to the suction nozzle or the housing and then the first and second locking elements are brought back into engagement by transferring the Rastverstellmechanismus of the adjustment position in the detent position.

In a particularly simple way, the latching adjustment mechanism can be formed when the first and second latching elements are designed in the form of at least one latching tooth comprising rows of teeth. Such a configuration allows in particular a particularly stable design of the Rastverstellmechanismus because several teeth can mutually engage each other at the same time. The latching elements, in particular the rows of teeth with their latching teeth, may be designed such that, for example, the individual latching elements, in particular the latching teeth, have inclined sliding surfaces in order to facilitate the engagement of the latching elements when the latching adjustment mechanism is transferred from the adjustment position into the latching position.

According to a further preferred embodiment of the invention, provision can be made for the adjusting device to comprise at least one biasing element which holds the first and second latching elements in a basic manner. Position of the adjusting device holds in the locked position. In this way it can be ensured, in particular, that the at least one spacer element can not move in an undesired manner relative to the suction nozzle or to the housing of the hard surface cleaning device, without a user expressly requesting this.

It is advantageous if the first and second latching elements can be moved against the action of the prestressing element from the latching position into the adjustment position. In particular, such an adjustment can be adjusted by appropriate selection of the biasing element. In order to move the at least one spacer element, a force for transferring the adjusting device from the locking position into the adjustment position must thus be selectively exerted.

The adjusting device can be designed in a particularly simple and compact manner if the biasing element is arranged on or formed in one piece with the at least one spacer element.

It is advantageous if the biasing element is designed in the form of a spring. For example, the spring may be in the form of a screw or leaf spring. In particular, it may be structurally designed as a tension spring or compression spring.

In order to make the operation of the Rastverstellmechanismus particularly simple, it is advantageous if the Rastverstellmechanismus comprises at least one actuating portion, which is arranged or formed on at least one spacer element. For example, can be transferred from the detent position to the adjustment position or vice versa by exerting a compressive force on the actuating portion or a tensile force on this the Rastverstellmechanismus.

According to a further preferred embodiment of the invention, it may further be provided that the adjusting device is designed to be stepped loose movement of the at least one spacer element. Thus, it is in particular possible to move and position the at least one spacer element relative to the suction nozzle or to the housing of the hard surface cleaning device such that a distance between the side edge of the wiper lip and, for example, a window frame can be optimally adjusted.

It is advantageous if the adjusting device comprises at least one drive device for moving the at least one spacer element from a first spacer holding position into at least one second spacer holding position and / or vice versa. In this way it is in particular possible to move the at least one spacer element relative to the suction nozzle or to the housing of the hard surface cleaning device without having to touch it directly. It is thus possible, for example, to initiate an actuating force by means of the drive device at an easily accessible point of the suction nozzle or the housing in order to move the at least one spacer element, for example and even then, when it rests against a lateral frame of the surface to be cleaned.

The drive device can be produced in a particularly simple manner if it is designed in the form of a linear drive. Alternatively, the drive device may also be designed in the form of a swivel, eccentric or folding drive.

The handling of the suction nozzle and the hard surface cleaning device can be improved in particular by the fact that the at least one drive device comprises at least one actuating element. Thus, for example, via the actuating element, an actuating force can be introduced onto the drive device in order to move the at least one spacer element in the desired manner in order to predetermine a distance, for example, from a side edge of the wiper lip to a frame of the surface to be cleaned and to adjust it as required. It is advantageous if the at least one actuating element is designed in the form of a rotatably mounted dial. Thus, by turning the dial a distance of the side edge of the wiper lip, for example, to a frame on a change in the position of the spacer element relative to the suction nozzle or the housing of the hard surface cleaning device can be changed.

Conveniently, the at least one drive device comprises at least one drive element which is in operative connection with the at least one actuating element and / or with the at least one spacer element. Thus, in particular, an actuating force can be introduced via the at least one actuating element and transmitted via the at least one drive element to the at least one spacer element in order to move and position this in the desired manner.

The drive device can be formed in a particularly simple manner if the at least one drive element is designed in the form of a drive shaft. This can in particular be rotatably mounted on the suction nozzle or on the housing of the hard surface cleaning device.

It is also favorable if the drive shaft has at least one external thread section which is designed to correspond to an internally threaded section arranged or formed on the at least one spacer element. This embodiment makes it possible in particular to realize a spindle drive in a simple manner in order to move the at least one spacer element. For example, a common drive shaft may be provided with two opposing threaded portions to simultaneously move by rotation of the drive shaft with two cooperating spacer elements, for example, simultaneously to each other or simultaneously away from each other. Thus, at the same time distances between the two spacer elements and the side edges of the wiper lip can be adjusted by a single operation. For the most individual possible adjustment of distances to the two side edges of the at least one wiper lip, it is favorable if each spacer element is assigned its own drive device with an actuating element.

According to a further preferred embodiment of the invention, two spacer elements may be provided, to which a common drive device is associated with a single actuator. As already described, the two spacer elements can thus be moved and positioned in particular simultaneously relative to the suction nozzle or to the housing of the hard surface cleaning device.

It is advantageous if the suction nozzle comprises a suction nozzle housing and if the at least one actuating element at least partially protrudes from the suction nozzle housing or the housing of the hard surface cleaning device or is arranged in the region of an opening of the suction nozzle housing or the housing of the hard surface cleaning device. Thus, a user can operate the actuator easily and safely. Incidentally, the drive device can be arranged protected within the suction nozzle housing or the housing, in particular in order to avoid undesirable contamination.

Furthermore, it is advantageous if a linear guide is provided with at least one first and at least one second guide element, if the at least one first and second guide elements on the one hand on the suction nozzle or on the housing and on the other hand on the at least one spacer holding element arranged or formed and cooperate in such a way in that the at least one spacer element is displaceable relative to the suction nozzle or to the housing in the direction defined by the at least one wiper lip. Such a linear guide allows a defined and stable relative movement between the at least one spacer element and the suction nozzle or the housing of the hard surface cleaning device. The linear guide can be embodied in a particularly simple and compact manner if the at least one first and second guide elements are designed in the form of at least one guide projection and at least one guide recess corresponding to this.

Furthermore, it may be favorable if the suction nozzle or the hard surface cleaning device comprises at least one stop device for setting a maximum deflected and / or minimally deflected spacing position. The stop device may in particular be arranged or formed in part on the at least one spacer element or alternatively on the suction nozzle or the housing of the hard surface cleaning device. For example, the stop device may comprise cooperating projections or comprise, for example, a guided in a slot pin-shaped element which strike at both ends of a slot and so can define a maximum deflected and a minimally deflected spacer position.

The following description of preferred embodiments of the invention is taken in conjunction with the drawings for further explanation. Show it :

FIG. 1 is a perspective view of a hard surface cleaning device;

FIG. 2 is a perspective view of a first embodiment of a suction nozzle;

FIG. 3: a partially exploded view of the suction nozzle from FIG. 2;

Figure 4: a plan view of a lower part of the suction nozzle of Figure 3 without

Cover; a view similar to Figure 4 with partially extended wall spacer elements when cleaning a window; a fragmentary enlarged view of the arrangement of Figure 4; a perspective view of a second embodiment of a suction nozzle; a partial exploded view of the suction nozzle of Figure 7; a view similar to Figure 5 of the second embodiment with an extended wall spacer element; a fragmentary enlarged and partially sectioned view of the suction nozzle in a plan view similar to Figure 9; a perspective view of a third embodiment of a suction nozzle; a partial exploded view of the suction nozzle of Figure 11; a plan view of a lower part of the suction nozzle of Figure 12 without cover; a partially enlarged perspective view of the area A of Figure 13; an enlarged view of the area A in Figure 13 in plan view; and a plan view of the area A similar to Figure 15, but with partially extended wall spacer. FIG. 1 schematically shows a portable hard surface cleaning device 10, specifically in the form of a hard surface suction device 12 designed as a portable handset that can be operated independently of the mains, with which liquid can be extracted from a hard surface, for example water from a window pane. The hard surface cleaning device 10 can be held by a user with one hand on a handle 14 thereof and guided in the manner of a conventional, having a rubber lip puller on the hard surface along.

The hard surface cleaning apparatus 10 includes a housing 16, which also forms the handle 14 and receives a suction device 18 with a suction turbine 20 and an electric motor 22 for driving the same.

In the housing 16 is also at least one rechargeable battery, in particular a lithium-ion battery, arranged to supply power to the electric motor 22nd

The housing 16 further defines a standing surface 26, which allows the hard surface cleaning device 10 in an upright position, as shown schematically in Figure 1, to be able to set up on a footprint, for example a table surface.

On the housing 16, a recess is formed, in which a removable dirty liquid tank 28 is arranged. It serves to accommodate

Dirty liquid that has been transported with the suction device 18.

On the upper side, ie facing away from the standing surface 26, the housing 16 of the hard surface cleaning device 10 can be detachably connected to a suction nozzle 30. In particular, for cleaning purposes, the suction nozzle 30 can be removed from the housing 16. The construction of the suction nozzle 30 will be explained in more detail below in connection with FIGS. 2 to 6.

The suction nozzle 30 comprises a suction nozzle housing, designated overall by the reference numeral 32, which is formed in several parts. In a Saugdü- sengehäuseunterteil 34, a suction channel 36 is arranged, the rear end 38 is coupled to the housing 16. In this way, the end 38 of the suction channel 36 is coupled to the suction device 18.

The suction channel 36 defines with its end facing away from the end 38 a straight, optionally curved, extending suction opening 40 which is formed between two cooperating wiper lips 42 and 44. The wiper lips 42 and 44 are formed of a flexible material, the wiper lip 44 carries a plurality of mutually parallel ribs 46 which define in a basic position of the wiper lips 42 and 44 when they rest unloaded, openings 48 between them, which with the Suction port 40 are in fluid communication.

The hard surface cleaning device 10 further comprises a spacer string device 50, which is arranged or formed on the suction nozzle 30 in the exemplary embodiment schematically illustrated in FIGS. 1 to 6. Alternatively, the spacer string device 50 may also be arranged or formed in a similar manner on the housing 16 of the hard surface cleaning device 10.

The Abstandshaiteeinrichtung 50 includes two spacer elements 52 which are movably held on the suction nozzle 30. The suction nozzle 30 is formed as a whole in mirror symmetry with respect to a plane of symmetry 54.

The wiper lips 42 and 44 each define a straight wiper edge 56 and 58, respectively, facing away from the suction port 40. Furthermore, each wiper lip 42 and 44 transversely, in particular perpendicular, to the scraping edges 56 and 58 extending side edges 60 and 62, respectively. The spacer elements 52 have laterally facing away from the wiper lips 42 and 44 side surfaces 64. The spacer elements 52 may be moved parallel to a direction defined by the scraping edges 56 and 58 such that the side surfaces 64 protrude laterally beyond the side edges 60 and 62 in a spaced apart position, such as shown in FIG. 5, and in the direction thereof 66 have a distance 68. In a basic position of the spacer elements 52, the spacer element 52 with the side surface 64 reaches up to the side edges 60 and 62 and defines a side surface plane 70 that runs parallel to a side edge plane 72 defined by the side edges 60 and 62.

The spacer device 50 further comprises an adjusting device 74 for positioning the spacer elements 52 in at least one first spacer position and in at least one second spacer position. The first spacer position is defined in particular by the basic position, as shown schematically in FIG. 6, for example. In the second spacing position, as illustrated by way of example in FIG. 5, the spacer elements 52 project laterally beyond the side edges 60 and 62 in the direction 66 defined by the scraping edges 56 and 58.

It comprises a drive device 76 with a linear drive 78 for displacing the spacer elements 52 parallel to the direction 66. The spacer elements 52 have a base body 80 in which a slot 82 is trained. This is penetrated by a guide pin 84. The slot 82 in conjunction with the guide pin 84 forms part of a linear guide 86. So they form first and second guide elements 88 and 90th

From the main body 80, a guide arm 92 extends in the direction of the plane of symmetry 54 parallel to the direction 66. The guide arm 92 carries a with an internal thread 94 provided guide sleeve 96. The guide sleeves 96 of the two guide arms 92 of the spacer elements 52 are provided with opposing internal threads 94. They each serve to receive a externally threaded portion 98 provided with external thread portion 100 of a common drive shaft 102 which is rotatably mounted on the Saugdüsengehäuseunterteil 34 in pivot bearings 104 about a defined by it longitudinal axis 106 which is parallel to the direction 66.

The drive shaft 102 also carries an actuator 108, in the form of an elongated cylindrical dial 110, which is provided for ease of handling with a plurality of parallel to the longitudinal axis 106 extending grooves 112. The drive shaft 102 is mounted mirror-symmetrically to the plane of symmetry 54 on Saugdüsengehäuseunterteil 34 and formed for this.

The drive shaft 102 forms a drive element 114, which is on the one hand with the actuating element 108 and on the other hand with the two Abstandshalte- elements 52 in operative connection. The suction nozzle 30 thus comprises a common drive device 76 with a common actuating element 108, which makes it possible to move the two spacer elements 52 at the same time.

The guide sleeves 96, which are penetrated by the male threaded portions 100, further form a further part of the linear guide 86. The slot 82 thus forms as the guide sleeve 96 a guide recess 116, the guide pin 84 as well as the male threaded portion 100 cooperating with the guide recess 116 guide projection 118th

On a cover 120 of the suction nozzle housing 32, with which the Saugdüsengehäuseunterteil 34 can be closed, an opening 122 is formed. The actuator 108 is as exemplified in Figure 2 shown, partially from the suction nozzle housing 32 before or is arranged in the region of the opening 122 of the suction nozzle housing 32.

The suction nozzle 30 further comprises a stop device 124 for specifying a maximum deflected and / or a minimally deflected distance holding position. The stopper 124 includes cooperating stop members, such as the slot 82 and the guide pin 84. Face-to-face inner edges 126 and 128 of the slot 82 provide end stops for movement of the spacer member 52 relative to the nozzle body 34. The inner edge 126 extending from the plane of symmetry 54 away, forms a stop for a maximum deflected position of the spacer element 52, the inner edge 128 which points to the plane of symmetry 54 defines a minimally deflected position, namely the basic position shown for example in Figure 6, in which the side surface plane 70 and Side edge plane 72 coincide.

In order to move the spacer elements 52 from the basic position shown in FIG. 2 into a deflected position, the rotary wheel must be rotated in such a way that it is rotated in the direction of the housing 16. In order to transfer the spacer elements 52 back to the basic position, must be rotated in the opposite direction from the opening 122 projecting dial 110.

The spacer device 50 makes it possible, in particular, to adjust the spacer elements 52 or their side surface 64 relative to the side edges 60 and 62 of the wiper lips 42 and 44 such that the distance 68 corresponds, for example, to a width 130 to a sealing element, in particular a sealing joint 132 made of silicone, which is used in particular when blowing a disc 138 into a frame 136 of a window 134. The side surface 64 can now slide along an inner edge 140 of the frame 136, particularly particularly well, if it is made of a suitably suitable plastic, for example POM or TPE or provided with a coating of these materials. By the adjusted distance 68 between the side surface 64 and the side edges 60 and 62 is particularly ensured that the wiper lips 42 and 44 can not cover the sealing joint 132, wherein they would be deformed so that on the disc 138 still remained a residual amount of dirty liquid, which the cleaning result would be worsened.

The spacer device 50 with its special drive device 76 makes it possible in the manner described to adjust the distance 68 continuously and thus the spacer elements 52 just as relative to the Saugsüsengehäuseunterteil 34 to position that the side edges 60 and 62, the sealing joint 132 just not touch. An adaptation to differently wide sealing joints 132, in particular different windows, is possible with the drive means 76 in a simple manner.

In the figures 7 to 10, another exemplary, designated by the reference numeral 30 'embodiment of a suction nozzle is shown by way of example. The suction nozzle 30 'is identical in its basic structure with the suction nozzle 30, so that identical or similar components and assemblies with the same reference numerals, but with the addition of a single coat, are designated.

The suction nozzle 30 'differs from the suction nozzle 30 essentially by the configuration and arrangement of the spacer 50'. Although this also comprises two spacer elements 52 ', each spacer element 52' is assigned its own drive device 76 '. This makes it possible to independently move and position the spacer elements 52 '.

The spacer device 50 'thus comprises an adjusting device 74' with two linear drives 78 '. The spacer elements 52 'each comprise a base body 80', which is mounted displaceably parallel to the direction 66 'on the suction nozzle housing lower part 34'. A linear guide 86 'for guiding a movement of the spacer element 52' comprises a guide projection 118 'protruding parallel to the direction 66' from the suction nozzle housing lower part 34 'in the direction of the cover 120', which engages in a corresponding guide recess on the main body 80 '. The guide recess is laterally closed towards the side surface 64 'and thus forms a stop for the spacer holding element 52' in a minimally deflected position, as shown for example in FIG. 9 on the suction nozzle 30 'on the right and in FIG. 9 on the suction nozzle 30'. is shown on the left.

Furthermore, the spacer element 52 'comprises a guide sleeve 96' formed on the base body 80 'and provided with an internal thread 94'. Two pivot bearings 104 'projecting from the suction nozzle housing lower part 34' in the direction of the cover 120 'serve to support a drive shaft 102' which, starting from an end 142 'pointing in the direction of the side surface 64', has an external thread 98 'corresponding to the internal thread 94'. is provided. Between the two pivot bearings 104 ', the drive shaft 102' carries a dial 110 'which is provided with a plurality of grooves 112' which extend parallel to a longitudinal axis 106 'defined by the drive shaft 102'.

Corresponding recesses are formed both on the suction nozzle housing lower part 34 'and on the cover 120' and together form an opening 122 'of the suction nozzle housing 32'. The dial 110 'projects slightly from the suction nozzle housing 32' or is arranged in the region of the opening 122 ', so that a user with closed suction nozzle housing 32' can only partially see and operate the setting wheel 110 'of the drive device 76'.

Each spacer element 52 'can be adjusted individually by the respective associated dial 110' is rotated about its longitudinal axis 106 '. Thus, each spacer element 52 'can be moved from a minimally deflected position in which the side surface 64' has a side edge plane 72 '. coincident side surface plane defined 70 ', move in a relation to the minimum deflected position deflected distance holding position. A distance 68 'between the side edge plane 72' and the side surface plane 70 'in the deflected distance holding position can be adjusted so easily in a simple manner.

As schematically illustrated in FIG. 9, the distance 68 'can be set to correspond to the width 130 of the sealing joint 132 of the window 134. The hard surface cleaning device 10, which is equipped with the suction nozzle 30 'can now be pulled parallel to the frame 136 with the side surface 64' on the inner edge 140 of the frame 136 adjacent parallel to the sealing joint 132 on the disc 138, wherein on the disc 138 located cleaning liquid is sucked, without remaining in the region of the sealing joint 132 residues of cleaning fluid.

A further exemplary embodiment of a suction nozzle designated as a whole by the reference numeral 30 "is shown by way of example in Figures 11 to 16. The suction nozzle 30" substantially corresponds in its basic structure to the suction nozzle 30 '. Identical parts and assemblies of the suction nozzle 30 "are therefore designated by the same reference numerals, but with the addition of a double coat.

The suction nozzle 30 "also has two spacer elements 52", which are movable substantially parallel to the direction 66 ". The spacer device 50" comprises two adjusting devices 74 ", which are each assigned to a spacer element 52". The two spacer elements 52 "can thus be moved and positioned independently of each other.

Unlike the spacer devices 50 and 50 ', with the spacer device 50 ", a spacer element 52" can only be positioned in defined spacing positions. Each adjusting device 74 "comprises a Rastverstellmechanismus 144" with first and second locking elements 146 "and 148", which are in a detent position, as shown schematically in Figure 15, in engagement and are disengaged in an adjustment position. The first latching elements 146 "are associated with the spacer element 52", the second latching elements 148 "are assigned to the suction nozzle housing 32", namely the suction nozzle housing lower part 34 ".

The first and second detents 146 "and 148" are in the form of rows of teeth 150 "and 152", each comprising a plurality of teeth 154 "and 156". The rows of teeth 150 ", 152" are designed such that their teeth 154 ", 156" can each engage in corresponding recesses between the respective other row of teeth 150 ", 152" assigned teeth 154 ", 156".

The row of teeth 152 "is formed on the suction nozzle housing lower part 34" on a projection 158 "and points in the direction of the wiping lips 42" and 44 "The row of teeth 150" is arranged or formed on a support element 160 "extending parallel to the direction 66". The carrier element 160 "protrudes from the main body 80" of the spacer element 52 "in the direction of the plane of symmetry 54".

A linear guide 86 "comprises a guide pin 84" protruding from the cover 120 "in the direction of the suction nozzle housing lower part 34" which corresponds to and passes through a slot 82 "on the base body 80" when the cover 120 "closes the suction nozzle housing lower part 34" ,

The adjusting device 74 "further comprises a prestressing element 162" in the form of a convexly curved leaf spring 164 "facing away from the carrier element 160" in the direction of the wiping lips 42 "and 44". On the suction nozzle housing lower part 34 "three parallel and equidistantly arranged stop ribs 166" are arranged which define planes which are parallel to the side surface planes 70 "and the side edge planes 72". The leaf spring 164 "rests with its in the direction of the wiper lips 42" and 44 "facing out side 168" on at least one of the three end edges 170 "of the stop ribs 166", which point in the direction of the support member 160 "out.

An outer side of the main body 80 "facing away from the suction port 40" and carrying three ribs 174 "forms an actuating portion 172". When a user presses on the actuating portion 172 "in the direction of the arrow 176", ie substantially perpendicular to the actuating portion 172 ", then the spacer element 52" pivots slightly about a pivot axis 178 defined by the guide pin 84 ". As a result of the pivoting movement, the carrier element 160 "is also pivoted in the direction of the stop ribs 176", so that the rows of teeth 150 "and 152" are disengaged. be moved substantially parallel to the direction 66 ".

When no force is exerted on the actuating portion 172 ", the leaf spring 164" against which the rows of teeth 150 "and 152" have been disengaged forces the support member 160 "back towards the projection 158" so that the teeth 154 "and 156" mesh again.

The equidistantly arranged teeth 154 "and 156" of the rows of teeth 150 "and 152" can be used to set defined spacing positions of the spacer element 52 "The distances defined between adjacent spacer positions correspond to the distances between two teeth 154" and 156 "of the two rows of teeth 150 "and 152". An abutment device 124 "comprises the oblong hole 82" and the guide pin 84 ". In a minimally deflected position of the spacer element 52", the guide pin 84 "bears against the inner edge 128" of the oblong hole 82 "pointing in the direction of the plane of symmetry 54" , In a maximally deflected position, the guide pin 84 "bears against the inner edge 126" of the oblong hole 82 "pointing away from the plane of symmetry 54".

As with the suction nozzles 30 and 30 ', a distance between the side surface planes 70 "and the side edge planes 72" can be desirably adjusted, preferably such that the distance 68 "corresponds to the width 130 of the sealing joint 132.

The handling of the suction nozzle 30 ", which can be coupled with the hard surface cleaning device 10 instead of the suction nozzle 30 or the suction nozzle 30 ', corresponds to the procedure described above in connection with the suction nozzles 30 and 30', as described in particular with reference to the figures 5 and 9 is a schematic representation of the suction of a disc 138 of a window 134 is shown by way of example in FIG.

The spacer element 52 "is preferably formed integrally with the carrier element 160" and the biasing element 162 ".

The spacer elements 52, 52 'and 52 "are preferably made of a material that is hard and has a low coefficient of friction, such as polyoxymethylene (POM). Optionally, the side surfaces 64, 64' and 64" may also be provided with a coating of POM , Alternatively, the spacer elements 52, 52 'and 52 "may be wholly or partially made of a soft and scratch-resistant material, such as a thermoplastic elastomer (TPE).

The spacer elements 52, 52 'and 52 "may be provided with rollers, wheels or balls instead of a flat side surface 64, 64' and 64" projecting slightly laterally beyond the side surfaces 64, 64 'and 64 ". NEN also the spacer elements themselves be in the form of rollers, wheels or balls.

Instead of a linear movement of the spacer elements 52, 52 'and 52 ", these can optionally also be folded, swiveled or moved eccentrically by means of a hinged, swivel or eccentric bearing for changing the distance 68 or 68' or 68". Provision of appropriate bearings is within the scope of expert action.

Furthermore, it is optionally also possible to provide a chamfer on the wiper lips in the transition region between the wiping edges and the side edges corresponding to the contour of the sealing joint 132 so that it can no longer deform when the wiper lips 44 are pulled over it.

The drive shafts 102 and 102 'may be made of plastic or wholly or partly of a metal, in order to achieve a connection stiff as possible arrangement of the drive means 76' and 76 '.

Even if the suction nozzles 30, 30 'and 30 "each have two spacer elements 52, 52' or 52", a single spacer element can optionally also be provided on a suction nozzle on only one side. This can be adjusted in particular with one of the three adjusting devices 74, 74 'or 74 "described.

A fixation of the spacer elements in a desired spacer position can be achieved in particular by the friction between the intermeshing threads of the drive devices 76 and 76 '. Optionally or alternatively, a separate locking can be provided, for example by interlocking locking elements, similar to the adjusting device 74 ". The described spacing devices 50, 50 'and 50 "can alternatively or additionally, for example, also be arranged or formed on the housing 16 of the hard surface cleaning device 10.

Hard surface cleaning device

Hartflächenabsauggerät

Handle

casing

suction

suction turbine

electric motor

battery

footprint

Dirty liquid tank

suction nozzle

Saugdüsengehäuseunterteil

suction

The End

suction opening

wiping lip

rib

opening

Spacer means

Spacer element

plane of symmetry

stripping

side edge

side surface

direction

distance

Side surface plane 72 side edge plane

74 adjusting device

76 drive device

78 linear drive

80 basic body

82 slot

84 guide pins

86 linear guide

88 guide element

90 guide element

92 guide arm

94 internal thread

96 guide sleeve

98 external thread

100 male thread section

102 drive shaft

104 pivot bearings

106 longitudinal axis

108 actuator

110 dial

112 groove

114 drive element

116 guide recess

118 Leadership lead

120 cover

122 opening

124 stop device

126 inner edge

128 inner edge

130 width

132 sealing joint

134 windows

136 frame 138 disc

140 inner edge of the frame

142 end

144 locking mechanism

146 locking elements

148 locking element

150 rows of teeth

152 rows of teeth

154 tooth

156 tooth

158 ahead

160 carrier element

162 biasing element

164 leaf spring

166 stop rib

168 outside

170 front edge

172 operating section

174 rib

176 arrow

178 pivot axis

Claims

Patent claims

Suction nozzle (30; 30'; 30"), in particular for a hard surface cleaning device (10) comprising a suction device (18), which suction nozzle (30; 30'; 30") has a suction opening (40; 40'; 40") which is followed by a suction channel (36) which can be connected to the suction device (18) with its end (38) facing away from the suction opening (40; 40'; 40"), the suction nozzle (30; 30'; 30") being at least a flexible wiper lip (42, 44; 42', 44'; 42", 44") which extends along the suction opening (40; 40'; 40") and one from the suction opening (40; 40'; 40") ) wiping edge (56) pointing away and extending in the direction (66; 66'; 66") of the same and two side edges (60, 62; 60', 62'; 60") pointing away from each other and running transversely to the wiping edge (56). 62"), characterized in that the suction nozzle (30; 30'; 30") comprises a spacer device (50; 50'; 50") with at least one spacer element (52; 52'; 52"), which is at a distance - holding position laterally over at least one of the two side edges (60, 62; 60', 62'; 60", 62") protrudes.

Hard surface cleaning device with a suction device (18) and a suction nozzle (30; 30';30") which interacts with the suction device (18) and which has a suction opening (40; 40';40"), to which a suction channel (36) is connected which can be connected or connected to the suction device (18) with its end (38) facing away from the suction opening (40; 40';40"), the suction nozzle (30; 30';30") having at least one flexible scraper lip (42, 44; 42', 44';42",44"), which extends along the suction opening (40; 40';40") and which points away from the suction opening (40; 40';40") and is in has a stripping edge (56) extending in the direction (66; 66';66") of the same and two side edges (60, 62; 60', 62';60",62") pointing away from one another and running transversely to the stripping edge (56), thereby characterized in that the hard surface cleaning device (10) comprises a spacer device (50; 50';50") with at least one spacer element (52; 52';52"), which, in a spacing position, projects laterally over at least one of the two side edges (60, 62; 60', 62';60",62").

3. Hard surface cleaning device according to claim 2, characterized by a housing (16) in which the suction device (18) is arranged or formed, the suction nozzle (30; 30 '; 30") being coupled to the housing (16) in a working position and is separated from the housing (16) in a cleaning position.

4. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized in that the spacer device (50; 50'; 50") on the suction nozzle (30; 30'; 30") and / or on a housing (16) of the Hard surface cleaning device (10) is arranged or designed.

5. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized in that the at least one spacer element (52; 52'; 52") is one of the wiper lip (42, 44; 42', 44'; 42", 44") ) has a side surface (64; 64'; 64") pointing away laterally, which in the spacing position is from the at least one of the two side edges (60, 62; 60', 62'; 60", 62") in which from the scraper edge ( 56) defined direction (66; 66'; 66") has a distance (68; 68'; 68").

6. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized in that the at least one spacer element (52; 52'; 52") in a basic position maximum up to the at least one of the two side edges (60, 62; 60', 62'; 60", 62").

7. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized in that the suction opening (40; 40 '; 40") is at least partially straight or curved.

8. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized by two flexible wiping lips (42, 44; 42', 44'; 42", 44"), each with a wiping edge (56) and two side edges (60, 62; 60' , 62'; 60", 62"), with the two wiper lips (42, 44; 42', 44'; 42", 44") defining the suction opening (40; 40'; 40") between them.

9. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized in that the two side edges (60, 62; 60', 62'; 60", 62") of the at least one scraper lip (42, 44; 42', 44'; 42", 44") each define a side edge plane (72; 72'; 72").

10. Suction nozzle or hard surface cleaning device according to claim 9, characterized in that the two side edge planes (72; 72'; 72") run parallel or substantially parallel to one another.

11. Suction nozzle or hard surface cleaning device according to one of claims 5 to 10, characterized in that the side surface (64; 64'; 64") of the at least one spacer element (52; 52'; 52") has a side surface plane (70; 70'; 70 ") Are defined.

12. Suction nozzle or hard surface cleaning device according to claim 11, characterized in that the side surface plane (70; 70'; 70") runs parallel or substantially parallel to at least one side edge plane (72; 72'; 72").

13. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized in that the at least one outlet Standing element (52; 52';52") is arranged or designed to be movable and/or removable.

14. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized in that the spacer device (50; 50'; 50") comprises an adjusting device (74; 74'; 74") for arranging the at least one spacer element (52; 52 '; 52") in a first spacing position and in at least a second spacing position.

15. Suction nozzle or hard surface cleaning device according to claim 14, characterized in that the first spacing position defines the basic position or that in the first spacing position the at least one spacing element (52; 52'; 52") in a direction (66) defined by the scraper edge (56). ; 66'; 66") protrudes beyond at least one of the two side edges (60, 62; 60', 62'; 60", 62").

16. Suction nozzle or hard surface cleaning device according to claim 14 or 15, characterized in that in the second spacing position the at least one spacing element (52; 52'; 52") in a direction (66; 66'; 66") defined by the scraper edge (56). ) protrudes beyond at least one of the two side edges (60, 62; 60', 62'; 60", 62").

17. Suction nozzle or hard surface cleaning device according to one of claims 14 to 16, characterized in that two spacer elements (52'; 52") are provided and that each spacer element (52'; 52") is assigned its own adjusting device (74'; 74") is.

18. Suction nozzle or hard surface cleaning device according to one of claims 14 to 17, characterized in that the adjusting device (74; 74';74") is designed to arrange the at least one spacing element (52; 52';52") in defined spacing positions.

19. Suction nozzle or hard surface cleaning device according to claim 18, characterized in that distances between two adjacent defined spacing positions are different or identical.

20. Suction nozzle or hard surface cleaning device according to one of claims 14 to 19, characterized in that the adjusting device (74") comprises a latching adjustment mechanism (144") with first and second latching elements (146", 148"), which are engaged in a latching position and are disengaged in an adjustment position, and that the first and second locking elements (146", 148") are assigned to the at least one spacer element (52") on the one hand and to the suction nozzle (30") or the housing (16) on the other hand.

Suction nozzle or hard surface cleaning device according to claim 20, characterized in that the first and second locking elements (146", 148") are designed in the form of rows of teeth (150", 152") comprising at least one locking tooth (154", 156").

22. Suction nozzle or hard surface cleaning device according to claim 20 or 21, characterized in that the adjusting device (74") comprises at least one prestressing element (162"), which holds the first and second locking elements (146", 148") in a basic position of the adjusting device ( 74") in the locking position.

23. Suction nozzle or hard surface cleaning device according to claim 22, characterized in that the first and second locking elements (146", 148") can be moved from the locking position to the adjustment position against the effect of the prestressing element (162").

24. Suction nozzle or hard surface cleaning device according to claim 22 or 23, characterized in that the biasing element (162") is arranged on at least one spacer element (52") or is formed in one piece with it.

25. Suction nozzle or hard surface cleaning device according to one of claims 22 to 24, characterized in that the prestressing element (162") is designed in the form of a spring, in particular in the form of a leaf spring (164").

26. Suction nozzle or hard surface cleaning device according to one of claims 20 to 25, characterized in that the latching adjustment mechanism (144") comprises at least one actuating section (172") which is arranged or formed on at least one spacer element (52").

27. Suction nozzle or hard surface cleaning device according to one of claims 14 to 17, characterized in that the adjusting device (74; 74 ') is designed for continuously moving the at least one spacer element (52; 52').

28. Suction nozzle or hard surface cleaning device according to claim 27, characterized in that the adjusting device (74; 74 ') comprises at least one drive device (76; 76') for moving the at least one spacer element (52; 52') from a first spacer position in at least one second spacing position and/or vice versa.

29. Suction nozzle or hard surface cleaning device according to claim 28, characterized in that the at least one drive device (76; 76') is designed in the form of a linear drive (78; 78').

30. Suction nozzle or hard surface cleaning device according to claim 28 or 29, characterized in that the at least one drive device (76; 76 ') comprises at least one actuating element (108; 108').

31. Suction nozzle or hard surface cleaning device according to claim 30, characterized in that the at least one actuating element (108; 108') is designed in the form of a rotatably mounted adjusting wheel (110; 110').

32. Suction nozzle or hard surface cleaning device according to one of claims 28 to 31, characterized in that the at least one drive device (76; 76 ') comprises at least one drive element (114; 114'), which is connected to the at least one actuating element and / or with the at least a spacer element (52; 52') is operatively connected.

33. Suction nozzle or hard surface cleaning device according to claim 32, characterized in that the at least one drive element (114; 114 ') is designed in the form of a drive shaft (102; 102').

34. Suction nozzle or hard surface cleaning device according to claim 33, characterized in that the drive shaft (102; 102 ') has at least one external thread section (98; 98'), which corresponds to an internal thread section arranged or formed on at least one spacer element (52; 52'). (94; 94 ') is formed.

35. Suction nozzle or hard surface cleaning device according to one of claims 28 to 34, characterized in that each spacer element (52 ') is assigned its own drive device (76') with an actuating element (108').

36. Suction nozzle or hard surface cleaning device according to one of claims 28 to 35, characterized in that two spacer elements (52) are provided, to which a common drive device (76) with a single actuating element (108) is assigned.

37. Suction nozzle or hard surface cleaning device according to one of claims 28 to 36, characterized in that the suction nozzle (30; 30'; 30") comprises a suction nozzle housing (32; 32'; 32") and that the at least one actuating element is at least partially made of the Suction nozzle housing (32; 32'; 32") or the housing (16) protrudes or is arranged in the area of an opening (122; 122'; 122") in the suction nozzle housing (32; 32'; 32") or the housing (16). .

38. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized by a linear guide (86; 86'; 86") with at least one first and at least one second guide element (88, 90; 88', 90'; 88", 90") that the at least one first and second guide elements (88, 90; 88', 90'; 88", 90") on the one hand on the suction nozzle (30; 30'; 30") or on the housing (16) and on the other hand on at least one Spacer elements (52; 52'; 52") are arranged or designed and cooperate in such a way that the at least one spacer element (52; 52'; 52") is relative to the suction nozzle (30; 30'; 30") or to the housing (16) guided in the direction (66; 66'; 66") defined by the at least one wiper lip (42, 44; 42', 44'; 42", 44").

39. Suction nozzle or hard surface cleaning device according to claim 37, characterized in that the at least one first and second guide elements (88, 90; 88 ', 90'; 88", 90") in the form of at least one guide projection (118; 118'; 118") ) and at least one guide recess (116; 116'; 116") designed to correspond to this.

40. Suction nozzle or hard surface cleaning device according to one of the preceding claims, characterized by a stop device (124; 124'; 124") for proceeding to a maximally deflected and/or a minimally deflected spacing position.