DE102018116395B4 - Cleaning device with a suction nozzle and a mechanical cleaning element - Google Patents

Abstract

Cleaning device (1) with a housing (2), a suction nozzle (3) and a cleaning element (5) which acts mechanically on a surface (4) to be cleaned during a cleaning operation of the cleaning device (1), the suction nozzle (3) being relative to the Cleaning element (5) can be moved from a first position to a second position and vice versa, the suction nozzle (3) being in the first position relative to a vertical projection of the cleaning device (1) onto the surface (4) to be cleaned in a usual operating position Position protrudes beyond an outline of the housing (2) and/or the cleaning element (5) and is encompassed by the outline in the second position, the cleaning device (1) having a motor-driven oscillating plate (14) for holding the cleaning element (5) in a rotationally fixed manner. , in particular for releasably holding a carrier plate receiving the cleaning element (5), characterized in that the suction nozzle (3) can be moved from the first position to the second position upon contact with an obstacle (10), the cleaning device (1 ) has an electromotive eccentric drive for circular oscillation of the oscillating plate (14), the suction nozzle (3) being displaceable relative to the cleaning element (5) at least to such an extent that the suction nozzle (3), based on a direction of movement of the cleaning device (1), can be displaced behind a movement path section of the oscillating cleaning element (5) that leads in the direction of travel.

Description

field of technology

The invention relates to a cleaning device with a housing, a suction nozzle and a cleaning element which acts mechanically on a surface to be cleaned during a cleaning operation of the cleaning device, the suction nozzle being displaceable relative to the cleaning element from a first position to a second position and vice versa, wherein the suction nozzle, based on a vertical projection of the cleaning device in a usual operating position onto the surface to be cleaned, projects beyond an outline of the housing and/or the cleaning element in the first position and is encompassed by the outline in the second position, the cleaning device being a motor-driven one Oscillating plate for the rotation-proof holding of the cleaning element, in particular for the releasable holding of a carrier plate receiving the cleaning element.

State of the art

Cleaning devices of the aforementioned type are known in the prior art in a variety of different designs. The cleaning devices can be, for example, vacuum cleaners or wet cleaning devices with a suction nozzle. The cleaning devices can be designed as independent cleaning devices or as attachments that are connected to a base device of a cleaning device. The cleaning devices can also be either hand-operated cleaning devices by a user or self-moving cleaning devices, for example in the form of autonomous cleaning robots.

The publication US 2008/0 141485 A1 For example, discloses a cleaning robot with a cleaning brush arranged on the underside and a movable suction arm, which can be moved beyond an outline of the housing of the cleaning robot in order to be able to clean corners of the room better.

Cleaning devices according to the aforementioned type are also known from WO 2004/062457 A2 and the US 2009/0094780 A1 .

Furthermore, the state of the art is discussed CN 102860794 A and US 2013/0125336 A1 pointed out.

Summary of the invention

Based on the aforementioned prior art, it is the object of the invention to develop a cleaning device in such a way that it offers added value for a user and, in particular, can optimally clean in front of walls and/or obstacles.

To solve this problem, it is proposed that the suction nozzle be displaceable from the first position to the second position when it comes into contact with an obstacle, the cleaning device having an electromotive eccentric drive for circular oscillation of the oscillating plate, the suction nozzle being at least so far relative to the cleaning element It is displaceable that the suction nozzle can be displaced, based on a direction of travel of the cleaning device, behind a movement path section of the oscillatingly moved cleaning element that leads in the direction of travel.

The cleaning device has a motor-driven oscillating plate for holding the cleaning element in a rotationally fixed manner. The oscillating plate can in particular be designed to releasably hold a carrier plate that accommodates the cleaning element. According to this embodiment, the cleaning device has a oscillating plate which is driven to oscillate, on which either the cleaning element directly or particularly preferably a carrier plate accommodating the cleaning element can be detachably arranged. The cleaning element is moved in an oscillating manner using the oscillating plate. If the cleaning element is attached to a carrier plate, which in turn is arranged on the oscillating plate, the cleaning element carries out the oscillating movement of the oscillating plate. The oscillating plate can be swung in a circle, for example, by an electromotive eccentric drive. It is particularly recommended that the suction nozzle is displaceable relative to the cleaning element at least to such an extent that the suction nozzle - in relation to a direction of travel - can be displaced behind a movement path section of the oscillatingly moved cleaning element that leads in the direction of travel. This ensures that the cleaning element can clean directly in front of an obstacle, such as a wall, without hindrance from the suction nozzle, provided that the arrangement of the cleaning element relative to the housing allows this.

The cleaning device is optimized in such a way that an area in front of floor-wall transitions, in room corners and/or in front of obstacles that could not usually be reached with the cleaning element can also be optimally cleaned. By moving the suction nozzle from the first to the second position, the distance between the cleaning element and the respective obstacle, the wall or other objects rising from the surface to be cleaned is reduced, so that the cleaning device as a whole can move closer and thus cleaning can also be carried out there can be carried out using the cleaning element. The suction nozzle can be held on the cleaning device in such a way that it is shifted from the first to the second position upon contact with or detection of an object rising from the surface to be cleaned. For example, it can be provided that a distance measuring device of the cleaning device detects a distance to an object and a displacement of the suction nozzle is initiated depending on a defined reference distance between the cleaning device and the object. Furthermore, the displacement of the suction nozzle can also be caused, for example, by the signal from a contact sensor which is arranged on the housing of the cleaning device or on the suction nozzle. Furthermore, it is also possible for the suction nozzle to be moved from the first to the second position due to contact with the object. If the cleaning element is arranged below the housing in relation to an orientation of the cleaning device during a usual operating position and preferably projects up to an edge region of the housing, it is possible to move the cleaning element directly to the housing by moving the suction nozzle located between the object and the housing Bring the object closer so that the surface in front of the object can be completely cleaned with the cleaning element in contact with the object. The cleaning element of the cleaning device can be, for example, a cleaning cloth which is arranged on a flat support plate and is guided over the surface to be cleaned. Furthermore, the cleaning element can also be a brush with bristle elements arranged on a flat base body or a cylindrical bristle roller, which rotates about a substantially horizontal axis or vertical axis. The cleaning elements can be designed for dry cleaning and/or wet cleaning of the surface to be cleaned.

In particular, it is proposed that the first position of the suction nozzle is a suction position that is closer to the surface to be cleaned and that the second position of the suction nozzle is a retraction position that is distant from the surface to be cleaned compared to the first position. In the first position, the suction nozzle is brought closer to the surface to be cleaned, in particular in such a way that a suction mouth of the suction nozzle applies negative pressure to the surface to be cleaned. The housing of the suction nozzle can either be placed directly on the surface to be cleaned or can be spaced from the surface to be cleaned, in particular with the help of sealing elements, such as sealing lips or bristle strips. In the second position, the suction nozzle is removed from the surface to be cleaned, in particular lifted, and is moved back into or under the housing or behind an outward-facing edge region of the cleaning element so that the suction nozzle does not pass over the housing of the cleaning device and / or the cleaning element protrudes. In the second position, the suction nozzle can, for example, be pivoted into the housing of the cleaning device, or be displaced over the housing in relation to the orientation of the cleaning device during the usual operating position, or be displaced behind the housing in relation to a current direction of movement of the cleaning device. In particular, the suction nozzle can be displaced in the retracted position in such a way that it is not visible to a user from the outside and/or is integrated into the housing in a shape that corresponds, for example in a recess in the housing that corresponds to the shape of the suction nozzle and is designed to accommodate the suction nozzle is.

Furthermore, it is proposed that the suction nozzle is arranged in front of the cleaning element in the first position in relation to a direction of travel of the cleaning device that is usual during a cleaning operation. If the cleaning device is a cleaning device hand-held by a user, it is usually moved for cleaning a surface in successive back and forth movements perpendicular to a longitudinal extension of a suction mouth of the suction nozzle, with the user following parallel paths of movement over the surface to be cleaned . In the case of an automatically moving cleaning device, the cleaning device usually moves in accordance with a rolling direction of drive wheels arranged on the cleaning device. The rolling direction is usually oriented perpendicular to a longitudinal extent of a suction mouth of the suction nozzle. In the direction of movement, the suction nozzle precedes the cleaning element in the first position, so that suction cleaning can first be carried out on the surface to be cleaned, before the surface is then mechanically processed with the cleaning element in the second position. This is advantageous because dirt on the surface, in particular for example small stones or the like, can otherwise be pressed onto the surface by the cleaning element that mechanically acts on the surface and cause scratches or the like there. The suction nozzle is therefore on the Cleaning device arranged so that it first reaches a portion of the surface to be cleaned before the mechanically acting cleaning element reaches this portion.

Furthermore, it is proposed that the suction nozzle is arranged on the cleaning device by means of at least one spring element. According to this embodiment, the suction nozzle is held on the cleaning device with the aid of one or more spring elements. The spring element can be, for example, a coil spring, a leaf spring or the like. The spring element supports the displacement of the suction nozzle relative to the housing or the cleaning element and determines a preferred position of the suction nozzle by the direction in which a restoring force of the spring element acts. A guide can be assigned to the spring element or spring elements, which directs the displacement movement of the suction nozzle in a specific direction, so that the suction nozzle can be displaced from a defined first position to a defined second position.

It is proposed that the suction nozzle can be moved into the first position following a restoring force of the spring element, and that the suction nozzle can be moved into the second position while overcoming the restoring force. If the first position is a suction position of the suction nozzle that is close to the surface to be cleaned, the suction nozzle is brought up to the surface to be cleaned in a preferred position or is placed on the surface to be cleaned. In order to reach the second position, i.e. preferably the position of the suction nozzle that is distant or raised from the surface to be cleaned, the restoring force of the spring element must be overcome. This can be done, for example, by the cleaning device moving further towards the obstacle with the suction nozzle in contact with an obstacle and thus tensioning the spring element against its restoring force. As soon as the force opposing the restoring force is eliminated, the spring element relaxes again in the direction of the first position of the suction nozzle, so that the preferred position is restored.

In particular, it is proposed that the suction nozzle is arranged on the cleaning device by means of a pivoting mechanism. The swivel mechanism can have a swivel arm that can be moved about a swivel axis and which carries the suction nozzle. The pivoting mechanism is designed to move the suction nozzle from the first to the second position and vice versa. A servomotor can be assigned to the lever mechanism, which is suitable for displacing the pivoting mechanism between different positions of the suction nozzle relative to the housing or the cleaning element of the cleaning device. On the other hand, however, the pivoting mechanism can also be operated manually by a user of the cleaning device or by moving the cleaning device with the suction nozzle against an object, which in turn activates the pivoting mechanism.

According to the invention, the suction nozzle can be moved from the first position to the second position when it comes into contact with an obstacle, in particular by a driving force of an electromotive drive of the cleaning device when the cleaning device moves in the direction of the obstacle with the suction nozzle coming into contact with the obstacle. The suction nozzle is thus held on the cleaning device in such a way that it can be moved from the first to the second position in the event of contact with an obstacle. By moving the cleaning device against the obstacle, while maintaining contact between the suction nozzle and the obstacle, for example, the restoring force of a spring element is overcome by the driving force of the cleaning device, so that the second position can be reached. This mode of operation for relocating the suction nozzle can be used both in cleaning devices that are manually operated by a user and in cleaning devices that move automatically. Furthermore, this version is also suitable for relocating the suction nozzle using a lever mechanism. A lever that can be pivoted about a pivot axis can be pivoted by contacting the object, possibly also against the restoring force of a spring element. The lever mechanism allows the suction nozzle to pivot into the second position. For this purpose, a lever carrying the suction nozzle is supported against an object and pivoted about the pivot axis as the cleaning device moves towards the object. The suction nozzle avoids a contact surface, for example on an obstacle or a wall, when the cleaning device is moved towards the obstacle or the wall.

In particular, it is proposed that the suction nozzle has at least one roller and/or a sliding element for contacting and/or rolling against an obstacle. The obstacle can be an object rising from the surface to be cleaned, such as a piece of furniture or a wall. Using the roller, the suction nozzle can roll off the obstacle without damaging the obstacle. By means of the sliding element, the suction nozzle can slide along the obstacle with low frictional resistance. The resistance force that occurs when the suction nozzle is displaced relative to the obstacle is significantly reduced. The at least one roller or the at least one slide element can guide the movement of the suction nozzle on the obstacle, so that the suction nozzle follows a defined trajectory from the first to the second position, or vice versa. The version with a roller or sliding element arranged on the suction nozzle is suitable both for a cleaning device with a pivoting mechanism and for a cleaning device with spring elements holding the suction nozzle on the cleaning device.

It can be provided that the cleaning device is a wet cleaning device or an attachment for a wet cleaning device. In this case, the cleaning element is preferably a wet cleaning element, in particular a wipe, onto which liquid can be applied. The wiping cloth can be arranged on a cleaning roller, which rotates about a horizontal or vertical axis of rotation, or on a carrier plate, which rests essentially parallel on the surface to be cleaned during the cleaning operation of the cleaning device and performs circular movements.

Brief description of the drawings

• 1 eine Reinigungseinrichtung gemäß einer ersten Ausführungsform,
• 2 einen Teilbereich der Reinigungseinrichtung mit einer ersten Stellung einer Saugdüse,
• 3 den Teilbereich gemäß 2 mit einer zweiten Stellung der Saugdüse,
• 4 eine weitere Ausführungsform der Reinigungseinrichtung mit einer durch eine Schwenkmechanik verlagerten Saugdüse in einer ersten Stellung,
• 5 den Teilbereich der Reinigungseinrichtung gemäß 4 in einer zweiten Stellung der Saugdüse,
• 6 eine Reinigungseinrichtung gemäß einer weiteren Ausführungsform,
• 7 die Reinigungseinrichtung gemäß 6 mit einer Saugdüse in einer ersten Stellung,
• 8 die Reinigungseinrichtung gemäß 6 beziehungsweise 7 mit der Saugdüse in einer zweiten Stellung,
• 9 eine weitere Ausführungsform einer Reinigungseinrichtung mit einer an einer Schwenkmechanik angeordneten Saugdüse in einer ersten Stellung,
• 10 die Reinigungseinrichtung gemäß 9 mit der Saugdüse in einer zweiten Stellung.

The invention is explained in more detail below using exemplary embodiments. Show it:

• 1 a cleaning device according to a first embodiment,
• 2 a portion of the cleaning device with a first position of a suction nozzle,
• 3 the sub-area accordingly 2 with a second position of the suction nozzle,
• 4 a further embodiment of the cleaning device with a suction nozzle displaced by a pivoting mechanism in a first position,
• 5 the sub-area of the cleaning device 4 in a second position of the suction nozzle,
• 6 a cleaning device according to a further embodiment,
• 7 the cleaning device according to 6 with a suction nozzle in a first position,
• 8th the cleaning device according to 6 respectively 7 with the suction nozzle in a second position,
• 9 a further embodiment of a cleaning device with a suction nozzle arranged on a swivel mechanism in a first position,
• 10 the cleaning device according to 9 with the suction nozzle in a second position.

Description of the embodiments

1 shows a cleaning device 1, which is designed here as a hand-held wet cleaning device with a base device 13 and an attachment 12 that is separably mounted on the base device 13. The attachment 12 here alone also represents a cleaning device 1 according to the invention. However, in the following, the entire system consisting of the attachment 12 and base device 13 is referred to as the cleaning device 1. The base device 13 has a handle 16, which here is designed to be telescopic, for example, so that a user of the cleaning device 1 can adapt the length of the handle 16 to his body size. Furthermore, a handle 17 is arranged on the handle 16, on which the user can guide the cleaning device 1 during a normal cleaning operation, ie push it over a surface 4 to be cleaned. During the cleaning operation, the user usually guides the cleaning device 1 in opposite directions of movement 7 over the surface 4 to be cleaned. In doing so, he alternately pushes the cleaning device 1 away from himself or pulls it towards him. A switch 18 is arranged on the handle 17 and is used, for example, to switch a motor of the cleaning device 1 on and off. A suction nozzle 3 is held on a housing 2 of the attachment 12 with the aid of spring elements 8. The spring elements 8 are designed here, for example, as coil springs. The spring elements 8 can be assigned a guide device, not shown, which directs the spring travel of the spring elements 8 so that a tensioned or relaxed position of the spring element 8 is achieved along a defined movement path. Between the suction nozzle 3 and the housing 2 of the cleaning device 1 there is also a suction channel 15 arranged, which connects a suction mouth of the suction nozzle 3 to a motor-blower unit of the cleaning device 1, so that the suction mouth of the suction nozzle 3 can be subjected to negative pressure. The motor-blower unit is here preferably arranged in the base device 13 of the cleaning device 1. In the illustration, the suction nozzle 3 is in a preferred position, which corresponds to a relaxed position of the spring elements 8. In this position, the suction mouth of the suction nozzle 3 is brought close to the surface 4 to be cleaned, so that suction material located on the surface 4 can be sucked into the cleaning device 1. On the underside of the housing 2 there is a cleaning element 5, which mechanically acts on the surface 4 to be cleaned. The cleaning element 5 here is a wiping cloth which is attached to a vibrating plate 14 of the cleaning device 1. The oscillating plate can be driven using an eccentric drive. The oscillating plate performs during cleaning 14, for example, a recurring oscillating movement with an oscillation frequency of, for example, 1,000 rpm up to 2,000 rpm per minute. This oscillating movement of the oscillating plate 14 relative to the housing 2 of the cleaning device 1 is superimposed on a displacement of the cleaning device 1 over the surface 4 to be cleaned by a user during a cleaning operation of the cleaning device 1. Both movements, ie both the manual displacement movement in a direction of travel 7 and the oscillating movement of the oscillating plate 14, take place in the same plane, namely parallel to the surface 4. The cleaning element 5 is, for example, an elastic cleaning cloth, in particular a microfiber cloth. This can be arranged on the oscillating plate 14 with the help of fastening means, for example Velcro fasteners. Alternatively, the cleaning element 5 can also be carried by a carrier plate, which in turn can be connected to the oscillating plate 14 in a rotationally fixed manner. In the figure, the oscillating plate 14 is located relative to the housing 2 flush with an edge region 6 of the housing 2, so that the oscillating plate 14 does not protrude from under the housing 2. It is provided here, for example, that the oscillating plate 14 cannot pivot beyond this edge region 6 from under the housing 2, so that the suction nozzle 3 in the position shown forms an outermost part of the cleaning device 1 that projects outwards from the housing 2. Starting from this suction position, the suction nozzle 3 can be moved against the restoring force of the spring elements 8 into a retracted position, in which the suction nozzle 3 is moved into a recess 22 provided for this purpose in the housing 2 and therefore no longer exceeds the outline of the housing 2 and therefore not protrudes beyond an outline of the cleaning element 5.

The 2 and 3 show a longitudinal section of the attachment 2, where in 2 the outwardly displaced suction position of the suction nozzle 3 is shown, and in 3 the retracted position of the suction nozzle 3 shifted into the housing 2 is shown. In 2 the cleaning device 1 is located in front of an obstacle 10, which here is, for example, a wall of a room. During the cleaning operation shown, the user first leads the cleaning device 1 frontally towards the obstacle 10 in order to carry out suction cleaning of the surface 4 using the suction nozzle 3. As soon as the suction nozzle 3 comes into contact with the obstacle 10, the pushing force exerted by the user on the cleaning device 1 counteracts the restoring force of the spring elements 8 holding the suction nozzle 3. As a result, the suction nozzle 3 is moved against the restoring force of the spring elements 8 in a preferably guided movement by the in 2 shown suction position in the in 3 shown retreat position shifted. Thus, the cleaning element 5 arranged under the housing 2 can clean the surface 4 up to the obstacle 10, which is shown in FIG 2 The suction position of the suction nozzle 3 shown was not possible. As soon as the user removes the cleaning device 1 from the obstacle 10 again, the spring elements 8 can relax again, so that the suction nozzle 3 follows the direction of the restoring force of the spring elements 8 back into the in 2 shown suction position is shifted. In this position, in addition to cleaning using the cleaning element 5, suction cleaning via the suction nozzle 3 is also possible.

The 4 and 5 show a second embodiment of a cleaning device 1 that is hand-held by a user. In this embodiment, the suction nozzle 3 is arranged on the housing 2 of the cleaning device 1 via a pivoting mechanism 9 having a joint 19. According to the embodiment shown, the suction nozzle 3 has a roller 11, by means of which the suction nozzle 3 can roll when it comes into contact with the obstacle 10. This, on the one hand, prevents damage to the obstacle 10 and, on the other hand, eliminates or at least significantly reduces a frictional force between the suction nozzle 3 and the obstacle 10. The transition from the in 4 shown suction position of the suction nozzle 3 in the in 5 The retracted position of the suction nozzle 3 shown takes place as before in relation to the 1 until 3 explained in more detail by the user's pushing force exerted on the cleaning device 1. As an alternative to the roller 11, the suction nozzle 3 could also have a sliding element.

Although this is not shown in the figures, it is of course also possible for a contact sensor of the cleaning device 1 to cause the suction nozzle 3 to shift between the two positions shown depending on a detected distance to the obstacle 10. In principle, a manual displacement of the suction nozzle 3 is also possible, even if this requires manual intervention by the user and is therefore less convenient than the other embodiments.

The 6 until 10 each show a cleaning device 1, which is designed as an automatically moving cleaning device. This is a combined suction-wiping cleaning device 1 with a suction nozzle 3 and a cleaning element 5, namely a cleaning cloth for wet wiping, which is held on a oscillating plate 14. The cleaning device 1 has motor-driven wheels 20 for automatic movement. Furthermore, the cleaning device 1 has a Navigation and self-localization device, by means of which the cleaning device 1 can orient itself within an environment and move in such a way that an unwanted collision with obstacles 10 is avoided. Furthermore, the cleaning device 1 has a distance measuring device 21, which measures distances to obstacles 10. Based on the detected distance values, a computing device can create a map of the environment for the cleaning device 1, which the navigation and self-localization device accesses in order to orientate itself and move around within the environment.

The displacement of the suction nozzle 3 from the suction position to the retracted position also takes place in the 6 until 10 shown cleaning device 1 as previously described in relation to the hand-held cleaning device 1 by a user.

The 6 until 8th relate to an embodiment in which the suction nozzle 3 is held on the housing 2 of the cleaning device 1 with the aid of spring elements 8.

The 9 and 10 show an embodiment in which the suction nozzle 3 is held pivotably on the housing 2 of the cleaning device 1 by means of a pivoting mechanism 9. The pivoting mechanism 9 can also be assigned a spring element 8, not shown in detail. The pivoting mechanism 9 has a joint 19 about which the suction nozzle 3 can be pivoted from the suction position into the retracted position. According to this embodiment, a roller 11 is again arranged on the suction nozzle 3 facing outwards, which can roll on the obstacle 10 when it comes into contact with an obstacle 10 in order to achieve a displacement of the suction nozzle 3 along a path on the obstacle 10 with little resistance. The displacement of the suction nozzle 3 continues until the suction nozzle 3, as in 10 shown, is pivoted into a recess 22 of the housing 2 of the cleaning device 1. In this position, the cleaning element 5, which is displaced flush with the edge region 6 of the housing 2, can also carry out cleaning directly in front of or on the obstacle 10, without the suction nozzle 3 spacing the cleaning device 1 from the obstacle 10.

List of reference symbols

1

Cleaning facility

2

Housing

3

suction nozzle

4

Area

5

Cleaning element

6

Edge area

7

Direction of movement

8th

Spring element

9

Swivel mechanism

10

obstacle

11

role

12

Attachment

13

Basic device

14

swing plate

15

suction channel

16

stalk

17

Handle

18

Switch

19

joint

20

wheel

21

Distance measuring device

22

recess

Claims (9)

Cleaning device (1) with a housing (2), a suction nozzle (3) and a cleaning element (5) which acts mechanically on a surface (4) to be cleaned during a cleaning operation of the cleaning device (1), the suction nozzle (3) being relative to the Cleaning element (5) can be moved from a first position to a second position and vice versa, the suction nozzle (3) being in the first position relative to a vertical projection of the cleaning device (1) onto the surface (4) to be cleaned in a usual operating position Position protrudes beyond an outline of the housing (2) and/or the cleaning element (5) and is encompassed by the outline in the second position, the cleaning device (1) having a motor-driven oscillating plate (14) for holding the cleaning element (5) in a rotationally fixed manner. , in particular for releasably holding a carrier plate receiving the cleaning element (5), characterized in that the suction nozzle (3) can be moved from the first position to the second position upon contact with an obstacle (10), the cleaning device (1 ) has an electromotive eccentric drive for circular oscillation of the oscillating plate (14), the suction nozzle (3) being displaceable relative to the cleaning element (5) at least to such an extent that the suction nozzle (3), based on a direction of movement of the cleaning device (1), behind someone who is ahead in the direction of travel Movement path section of the oscillating cleaning element (5) can be moved. Cleaning device (1). Claim 1 , characterized in that the first position of the suction nozzle (3) is a suction position that is closer to the surface to be cleaned (4) and that the second position of the suction nozzle (3) is a distance away from the surface to be cleaned (4) compared to the first position retreat position is. Cleaning device (1). Claim 1 or 2 , characterized in that the suction nozzle (3) is arranged in the first position in front of the cleaning element (5) in relation to a direction of movement (7) of the cleaning device (1) that is usual during a cleaning operation. Cleaning device (1) according to one of the preceding claims, characterized in that the suction nozzle (3) is arranged on the cleaning device (1) by means of at least one spring element (8). Cleaning device (1). Claim 4 , characterized in that the suction nozzle (3) can be moved into the first position following a restoring force of the spring element (8), and in that the suction nozzle (3) can be moved into the second position while overcoming the restoring force. Cleaning device (1) according to one of the preceding claims, characterized in that the suction nozzle (3) is arranged on the cleaning device (1) by means of a pivoting mechanism (9). Cleaning device (1) according to one of the preceding claims, characterized in that the suction nozzle (3) is driven by a driving force of an electromotive drive of the cleaning device (1) when the cleaning device (1) moves in the direction of the obstacle (10) with contact of the suction nozzle (1) 3) can be moved with the obstacle. Cleaning device (1) according to one of the preceding claims, characterized in that the suction nozzle (3) has at least one roller (11) and/or a sliding element for contacting and/or rolling against an obstacle (10). Cleaning device (1) according to one of the preceding claims, characterized in that the cleaning device (1) is a wet cleaning device or an attachment (12) for a wet cleaning device.

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