CN106993984B

CN106993984B - Suction nozzle for a suction cleaning device

Info

Publication number: CN106993984B
Application number: CN201710043243.7A
Authority: CN
Inventors: M.塞尔奈奇
Original assignee: Vorwerk and Co Interholding GmbH
Current assignee: Vorwerk and Co Interholding GmbH
Priority date: 2016-01-21
Filing date: 2017-01-19
Publication date: 2021-06-01
Anticipated expiration: 2037-01-19
Also published as: TW201729741A; DE102016101051A1; CN106993984A

Abstract

The invention relates to a suction nozzle (1) of a suction cleaning device (2), comprising a housing (3) and a suction channel (4) opening into a suction opening (29) for connecting a fan of the suction cleaning device (2), wherein the suction channel (4) and/or the suction opening (29) can be moved by means of an actuator (5) from a first position into a second position, in particular from a hard floor position into a carpeted floor position, and vice versa. In order to provide a suction nozzle (1), wherein the height of the suction nozzle (1) standing on the surface to be cleaned is kept substantially constant, the suction nozzle (1) has a transmission device (6) operatively connected to an actuator (5), in particular a guide chute (6) movably arranged on the housing (3), and the transmission device has a first displacement device (7) for displacing the suction channel (4) and/or the suction opening (29) relative to the housing (3) and a second displacement device (8) for displacing the sealing element (9), in particular the brush element, relative to the housing (3). The invention also relates to a suction cleaning device (2) having a suction nozzle (1) and to a method for operating a suction nozzle (1).

Description

Suction nozzle for a suction cleaning device

Technical Field

The invention relates to a suction nozzle for a suction cleaning device, having a housing and a suction channel opening into the suction opening for connection to a fan of the suction cleaning device, wherein the suction opening and/or the suction channel can be moved by means of an actuator from a first position into a second position, in particular from a hard floor position into a carpet position, and vice versa from the second position into the first position, in particular from the carpet position into the hard floor position.

The invention further relates to a suction cleaning device with a suction nozzle and to a method for operating a suction nozzle.

Background

Suction nozzles of the above-mentioned type are known. The suction nozzle can either be arranged on the base device of the suction cleaning device in the manner of an accessory device or be an inseparable part of the suction cleaning device. The suction cleaning device can either be a cleaning device designed only for suction or can be a cleaning device designed both for suction and for wiping. Furthermore, the suction cleaning device can also be guided by the user in the hand or can be moved by himself, for example a cleaning robot.

In order to achieve a uniformly good cleaning effect on different types of surfaces to be cleaned, it is known to reversibly adjust the suction nozzle according to the different types of surfaces to be cleaned. For example, the arrangement of the suction nozzle for hard floors differs from that for carpeted floors. The arrangement differs here in particular in that the spacing of the suction opening and/or the sealing element, for example a brush element, connected to the suction channel relative to the surface to be cleaned differs. In hard floor positions, the suction nozzle is usually placed on the surface to be cleaned by means of a sealing element, thereby creating or increasing the spacing between the suction opening and the surface to be cleaned. This avoids scratching on hard floors. In the carpeted floor position, the suction opening is usually guided in a sliding manner against the surface to be cleaned, so that the spacing between the suction opening and the carpeted floor or carpet is reduced compared to the case of a hard floor position.

Document WO 2011/007160 a1 discloses a suction nozzle in which a brush unit arranged on the suction nozzle is moved according to the type of surface to be cleaned, whereby the housing of the suction nozzle is simultaneously also lowered towards or lifted from the surface to be cleaned. The brush unit is connected to an air spring which functions in the case of a hard floor to eject the brush unit from the outer circumference of the housing and functions in the case of a carpeted floor to retract the brush unit into the housing.

The disadvantage here is that the housing of the suction nozzle is likewise moved on account of the movement of the brush unit and has a different spacing in this case with respect to the surface to be cleaned. In particular, the lifting of the housing from the hard floor to be cleaned makes it possible to reach the height of the suction nozzle, which obstructs or at least impedes the cleaning of the place below the cabinet or the like.

Disclosure of Invention

Against this background, the object of the present invention is to provide a suction nozzle in which the height of the suction nozzle placed on the surface to be cleaned remains substantially constant.

In order to solve the above-mentioned problem, the invention provides that the suction nozzle has a gear mechanism operatively connected to the actuator, in particular a guide chute movably arranged on the housing, which guide chute has a first displacement device for displacing the suction channel and/or the suction opening relative to the housing and a second displacement device for displacing the sealing element, in particular the brush element, relative to the housing.

According to the invention, both the sealing element and the suction channel or the suction opening are thereby moved relative to the housing of the suction nozzle, so that a reverse movement of the sealing element can be achieved when the suction channel/suction opening is moved in the direction of the surface to be cleaned, and vice versa. The housing advantageously has one or more end stops and seals for the suction channel and/or the suction opening, so that the hard floor position of the seal moving outward through the housing and the carpeted floor position of the suction channel correspond to the same spacing of the housing of the suction nozzle relative to the surface to be cleaned. The transmission device can be designed in one piece and comprise a first displacement device and a second displacement device. Alternatively, however, the first displacement device may also be embodied in a first transmission sub-device, while the second displacement device is embodied in a second transmission sub-device connected to the first transmission sub-device. It is proposed for the invention that the two transmission sub-arrangements are directed the same and operated on the same circumference when the actuator is operated, so that both the first and the second moving arrangement experience the same movement relative to the housing of the suction nozzle. If the transmission is, for example, a two-part guide link, the two displacement devices advantageously move in the same direction and by the same amount. The movements of the suction channel/suction opening and the seal can be coordinated with one another in time, in particular sequentially in time, so that the housing of the suction nozzle has a constant spacing from the surface to be cleaned during the movement of the suction channel/suction opening from, for example, a hard floor position to a carpeted floor position, and the height of the suction nozzle above the surface to be cleaned is thereby kept substantially constant.

According to a further embodiment, the first displacement device is provided with a first guide surface for the engaging element of the suction channel and/or the suction opening to be raised, in particular in a direction away from the actuator, in order to enable the suction channel and/or the suction opening to be displaced from the surface to be cleaned, in particular in a direction away from the actuator. For this purpose, the suction channel or the suction opening, for example, can be pivoted about a pivot axis on a housing of a movably mounted suction nozzle. It is provided that the spacing between the pivot axis and the suction opening which comes into contact with the surface to be cleaned is as large as possible in terms of dimensioning, so that as little force as possible is exerted to transition the suction nozzle from the carpeted floor position into the hard floor position. The engaging elements of the suction channel or of the suction opening engage in the first displacement device, so that when the transmission is operated, for example when the guide chute is displaced, a displacement of the suction channel and/or of the suction opening results. When the actuator is operated, the guide runner is moved, for example, relative to the housing of the suction nozzle, wherein the engaging element moves along the first guide surface and thereby follows the slope of the first guide surface. The engaging element is thus moved away from the surface to be cleaned during the suction operation as a result of the orientation of the suction nozzle, so that the suction channel or the suction opening is lifted and the suction opening no longer comes into contact with the surface to be cleaned. This describes a hard floor position of the suction nozzle, wherein damage, in particular scratching, should be avoided by the lifting of the suction opening from the surface to be cleaned. The direction of action or the opposite direction of action of the actuator for moving the suction channel/suction opening from the carpeted floor position into the hard floor position is essentially determined by the mechanical operative connection between the actuator and the suction channel/suction opening via the transmission. Accordingly, alternatively, a raised guide surface can also be provided for the opposite direction of action of the actuator, which guide surface causes the suction channel to move away from the surface to be cleaned.

It is furthermore provided that the second displacement device, depending on the direction of action of the actuator, in particular on the direction of action facing away from the actuator, likewise provides a second guide surface for the engaging element of the seal, so that the seal can be displaced toward the surface to be cleaned, depending on the orientation of the suction nozzle during normal suction operation. When the actuator is operated, the engaging element of the seal is thereby moved along the lowered second guide surface, so that the seal is moved towards the surface to be cleaned. The direction of movement of the engaging elements of the suction channel or of the suction opening and of the sealing element is advantageously opposite, so that a displacement of the engaging elements of the suction channel/suction opening along the ascending first guide surface occurs simultaneously with a displacement of the engaging elements of the sealing element along the descending second guide surface. The mutually opposite movements are triggered by a single actuation of the actuator in the action direction, so that no separate actuators need to be used for the movement of the suction channel/suction opening and the movement of the seal. The actuator thus fulfills two displacement tasks, whereby, on the one hand, a time-based coordination of the displacement movements is possible, and, on the other hand, the production of the suction nozzle is particularly simple and cost-effective.

The actuator which causes the guide link to move can be, for example, an air spring, a servomotor, a lifting magnet or the like. If, for example, an air spring is used as actuator, the actuator can be expanded by air loading or contracted by venting, wherein a transmission connected to the air spring is operated. In this case, the linear movement of the actuator is converted, for example, into an oscillating movement of the suction channel/suction opening or of the seal. A valve, in particular a valve in fluid connection with the suction channel, can be assigned to the air spring, which valve can be operated depending on the type of surface to be cleaned. The air spring can be charged or discharged by operating the valve, so that the air spring is expanded or compressed. The air spring can be emptied via the suction channel by means of the valve, which can lead to a contraction of the air spring and thus, for example, to the lowering of the suction opening onto the surface to be cleaned and the lifting of the seal, which corresponds to the position of the carpet floor. When the valve is closed, the air spring is vented by ambient air and expands, lifting the suction opening from the surface to be cleaned, which corresponds to a hard floor position. The valves of the air springs can be operated automatically, for example by means of a control device which operates the valves depending on the type of surface currently to be cleaned, for example in combination with a floor sensor. Whereby the type of surface detected by the ground sensor triggers the operation of an actuator which on the one hand moves the suction channel or suction opening and on the other hand moves the sealing member.

It is proposed that the first displacement device and/or the second displacement device have a plurality of operating regions, which correspond to different positions of the suction channel and/or the suction opening and/or the seal relative to the housing.

In particular, it is proposed that the operating region of the first displacement device has guide surface sections with mutually different inclinations for guiding the engaging elements of the suction channel and/or the suction opening. The first displacement device thus has a substantially non-constant slope and is divided into a plurality of operating regions, the transition points of which can be designed either continuously or discontinuously. The inclination of the first operating region of the first displacement device is designed, for example, to bring about a rapid lowering of the suction opening when moving from the hard floor position into the carpeted floor position. The second operating region may have a smaller slope relative to the first operating region, so that the suction opening descends more slowly in the direction of the surface to be cleaned than during the movement through the first operating region. The third operating region adjoining the second operating region can, for example, be designed parallel to the direction of action of the actuator and advantageously also parallel to the surface to be cleaned, so that the suction opening no longer continues to move on the basis of this operating region. This operating region can be used, for example, to move the sealing element, i.e. to reverse the movement of the sealing element, so that a lifting of the sealing element from the surface to be cleaned is achieved.

It is also correspondingly proposed that the operating region of the second displacement device has guide surface sections with mutually different inclinations for guiding the engagement elements of the sealing element. As described above for the suction channel or the suction opening, the seal can thus also be lowered differently in speed toward the surface to be cleaned or lifted from the surface to be cleaned. Depending on the hard floor position, in which the seal is arranged on the surface to be cleaned, the first guide surface section of the second displacement device thus has a different inclination, for example, than the guide surface sections adjoining in the direction of the carpet floor pattern. Likewise, the third guide surface section may have a greater slope than the second guide surface section, so that the seal is lifted first slowly from the surface to be cleaned and then more rapidly than it. The same applies correspondingly to the opposite direction, i.e. from the carpeted floor location towards the hard floor location. Here, the seal is first moved rapidly in the direction of the surface to be cleaned and then more slowly, so that an impact of the seal on the surface to be cleaned is avoided.

It is also proposed that the guide surface section of the operating region of the first displacement device and the guide surface section of the operating region of the second displacement device are designed parallel to the direction of action of the actuator. The guide surface sections of the individual displacement devices, which are designed parallel to the direction of action of the actuator, act such that no displacement of the suction channel/suction opening or of the seal is caused when the actuator is operated in the direction of action. The operating region can thus be used for movement only by means of a corresponding further movement device. In particular, the guide surface section of the first displacement device, which is designed parallel to the direction of action of the actuator, interacts with the guide surface section of the second displacement device in such a way that the displacement of the sealing element is achieved while maintaining the position of the suction channel/suction opening, or vice versa. By this design, the movement of the suction opening and the sealing element is carried out in time sequence, wherein the lifting of the sealing element, for example, from the surface to be cleaned is only carried out when the suction opening has been placed on the surface to be cleaned.

It is accordingly proposed that the guide surface sections of the first displacement device and the second displacement device are arranged opposite one another such that, when the engaging element of the suction channel and/or the suction opening is displaced parallel to the direction of action of the actuator, a displacement of the engaging element of the seal which is not parallel to the direction of action is simultaneously achieved, and vice versa. This achieves the coordination of the movement of the suction channel/suction opening or seal as described above.

It is further proposed that the first and second displacement devices, in particular the guide surface sections of the first and second displacement devices, are arranged opposite one another and are designed such that, depending on the position of the suction nozzle during normal suction operation, a lowering movement of the seal is also simultaneously effected during the upward movement of the suction channel and/or the suction opening, and vice versa. In this design, the suction channel and the seal move simultaneously. This eliminates the need for an operating region parallel to the direction of action of the actuator. The advantage is also obtained that the sealing element can be lifted off the surface to be cleaned quickly, and the user of the suction nozzle therefore only needs to overcome the increased frictional resistance between the carpet surface and the sealing element for a short time.

In addition to the suction nozzle described above, the invention also relates to a suction cleaning device with a suction nozzle of the type described above. The suction cleaning device can be designed either as a cleaning device for suction only or as a cleaning device for both suction and wiping. Furthermore, the cleaning device can also be a handheld guided cleaning device or a self-propelled cleaning device, for example a cleaning robot.

Finally, the invention relates to a method for operating a suction nozzle, in particular a suction nozzle as described above, wherein the suction opening of the suction nozzle and/or a suction channel leading into the suction opening can be moved by means of an actuator from a first position into a second position, in particular from a hard floor position into a carpeted floor position, and can be moved in the opposite direction, wherein both the suction channel and/or the suction opening and the seal, in particular the brush element, are moved, in particular moved in the opposite direction, relative to the housing of the suction nozzle, so that the housing maintains a constant distance from the surface to be cleaned, depending on the orientation of the suction nozzle during normal suction operation. The embodiments made for the suction nozzle are also correspondingly applicable to the proposed method.

Drawings

The embodiments are explained in more detail below with the aid of the figures. In the drawings:

figure 1 shows a suction cleaning device with a suction nozzle,

figure 2 shows a longitudinal section through the suction mouth in a hard floor position,

figure 3 shows the suction mouth in a first intermediate position,

figure 4 shows the suction mouth in a second intermediate position,

fig. 5 shows the suction nozzle in a carpeted floor position.

Detailed Description

Fig. 1 schematically shows a suction cleaning device 2 with a suction nozzle 1. The suction cleaning device 2 is designed as a hand-held vacuum cleaner. The suction nozzle 1 is designed as a separate accessory device which can be removed from the base device 24 of the suction cleaning device 2. The suction nozzle 1 has a housing 3 with two wheels 30 with which the suction nozzle 1 can be moved over the surface to be cleaned. The shaft 25 is connected to the base device 24, said shaft being arranged telescopically on the base device 24. The lever 25 has a handle 26 with a switch 27. The switch 27 is here an on and off switch. Furthermore, the cable 28 is guided through the shaft 25.

The suction cleaning device 2 has in a conventional manner only a fan (not shown), with which suction can be removed from the surface to be cleaned via the suction nozzle 1. For this purpose, the fan generates a suction air flow which acts on the suction channel 4 of the suction nozzle 1 and on the suction opening 29 connected thereto.

During normal suction operation, the suction cleaning device 2 is moved over the surface to be cleaned by means of the suction nozzle 1. Here, the user will typically move the suction cleaning device 2 back and forth over the surface to be cleaned. Depending on the type of surface to be cleaned, for example a hard floor or a carpeted floor, the suction nozzle 1 is modified for optimum cleaning and for avoiding damage to vulnerable surfaces. In particular the spacing of the suction openings 29 relative to the surface to be cleaned. For cleaning a carpeted floor, the suction opening 29 is usually placed, for example, on the carpeted floor, while the suction opening 29 is lifted from the surface to be cleaned for cleaning a hard floor in order to avoid scratching.

Fig. 2 shows a longitudinal section through the suction nozzle 1. The suction nozzle 1 has a housing 3 in which a suction channel 4 is arranged. The suction channel 4 opens into a suction opening 29 which is fixedly connected to the suction channel 4 and can be moved relative to the housing 3. The suction channel is in particular swingable, so that the suction opening 29 is moved closer to or further away from the surface to be cleaned. The suction channel 4 is movable relative to the housing 3 by means of an actuator 5. The actuator 5 is here an air spring. Alternatively, however, the actuator 5 may also have a servomotor, a lifting magnet or the like.

The actuator 5 is connected to the suction channel 4 via a transmission 6, in this case via a guide chute. The transmission 6 is movably arranged in the housing 3 such that it can be moved in the direction of action x of the actuator 5. The suction nozzle 1 also has a seal 9, which here has a brush element. The seal 9 is pivotably mounted on the support 31, so that the seal 9 can be lifted from the surface to be cleaned and at least partially inserted into the housing 3. For this purpose, the seal 9 is also connected to the actuator 5 via the transmission 6.

The transmission 6 has a first displacement device 7 and a second displacement device 8. The displacement means 7, 8 are designed as long holes in the gear 6. The first displacement means 7 serve to receive the engaging element 12 of the suction channel 4, while the second displacement means 8 serve to receive the engaging element 13 of the seal 9. Each displacement device 78 has guide surfaces 10, 11, i.e. the first displacement device 7 has a first guide surface 10 and the second displacement device 8 has a second guide surface 11. The respective snap-in elements 12, 13 slide along the guide surfaces 10, 11, respectively, while the actuator 5 is operated in the direction of action x, which corresponds here to an expansion or contraction of the air spring. When the air spring is inflated, the gear 6 is displaced to the left in the drawing, so that the engagement elements 12, 13 are displaced to the right within the displacement devices 7, 8, respectively. When the air spring contracts, the transmission 6 is correspondingly pulled to the right, so that the engagement elements 12, 13 are displaced to the left inside the displacement devices 7, 8.

The displacement device 7, 8 has a plurality of operating regions 14 to 18 which define different positions of the suction channel 4 or of the seal 9. For example, the first displacement device 7 has three operating

regions

14, 15, 16 for the suction channel 4, for each of which a

guide surface section

19, 20, 21 is associated. The first operating region 14 is arranged substantially parallel to the direction of action x of the actuator 5, while the second, following operating region 15 has a slope, i.e. an angle greater than 0 ° relative to the direction of action x of the actuator 5, in this case, for example, 10 °. The subsequent third operating region 16 has a greater inclination than the preceding one, i.e. for example an angle of 80 ° with respect to the direction of action x. The second displacement device for the seal 9 has two operating

regions

17, 18, wherein the first operating region 17 is arranged non-parallel to the direction of action x of the actuator 5, i.e. here at an angle of, for example, 80 °, and wherein the subsequent operating region 18 is arranged parallel to the direction of action x.

In the hard-floor position of the suction nozzle 1 shown in fig. 2, the actuator 5 is maximally expanded, i.e. moved to the left in the drawing. The snap-in elements 12, 13 are thus located in the outermost right end region of the displacement devices 7, 8. In particular, the engaging element 12 of the suction channel 4 is located in the operating region 16, whose guide surface section 21 has the greatest inclination. The suction channel 4 is thereby moved upwards, i.e. away from the surface to be cleaned, and the suction opening 29 does not rest against the surface to be cleaned. Accordingly, the engaging element 13 of the seal 9 is moved within the guide surface section 22 on the guide surface section 22 arranged parallel to the direction of action x of the actuator 5, so that the seal 9 is moved as far as possible out of the housing 3 of the suction nozzle 1 and is brought into contact with the surface to be cleaned there. The seal 9 thus serves primarily as a spacer for the housing 3, so that the housing or the suction opening 29 does not cause damage to the surface to be cleaned.

The opposing position of the suction channel 4 and the seal 9 is determined by the shape of the first and second displacement means 7, 8. Since the first displacement means 7 assigned to the suction channel 4 are designed to be raised in a direction corresponding to the retraction of the actuator 5, a lowering of the suction opening 29 towards the surface to be cleaned results upon retraction of the actuator 5. Correspondingly, the second displacement device 8 associated with the seal 9 is designed to be raised in the direction of action x in conjunction with the contraction of the actuator 5, so that the seal 9 is raised when the actuator 5 contracts. Depending on the type of surface to be cleaned, either the suction opening 29 or the seal 9 is thereby always placed against the surface to be cleaned.

The operation of the actuator 5, which causes the position of the suction channel 4 and the seal 9 to change, is controlled according to the type of surface to be cleaned. This is usually done by means of a floor sensor which detects the type of surface currently to be cleaned and then controls the blowing or exhausting of the actuator 5, here an air spring. The detection of the type of surface to be cleaned can be controlled by means of optical measuring methods, contact measuring methods or also as a function of the vacuum prevailing in the suction opening 29. Of course, other types of surface sensors are also conceivable, wherein the type of surface sensor and the type of actuator 5 have no influence on the solution according to the invention.

Subsequent figures 3 and 4 show two intermediate positions starting from the hard floor position of the suction nozzle 1 shown in figure 2 up to the carpeted floor position shown in figure 5.

According to fig. 3, the suction nozzle 1 is in a first intermediate position. In this case, the actuator 5 contracts by a certain partial amount starting from the fully expanded position shown in fig. 2, so that the transmission 6 is moved to the right in the direction of the actuator 5, i.e. in the plane of the drawing. Accordingly, the engaging elements 12, 13 of the suction channel 4 and the seal 9 respectively migrate to the left inside the respective moving device 7, 8. The engaging element 12 of the suction channel 4 moves from the operating area 16 to the operating area 15. By the relatively large inclination of the guide surface section 21 of the operating region 16 compared to the operating region 15, the suction channel 4 or the suction opening 29 is thereby moved relatively rapidly in the direction of the surface to be cleaned. Accordingly, the guide surface section 20 of the operating region 15 has a smaller slope, so that a relatively slow movement of the suction channel 4 towards the surface to be cleaned is achieved with a further contraction of the actuator 5. In this intermediate position, the suction opening 29 is not yet applied to the surface to be cleaned. The seal 9 is accordingly placed as described above and unchanged on the surface to be cleaned, since the engaging element 13 of the seal 9 is only moved along the guide surface section 22 which is designed parallel to the direction of action x of the actuator 5. Whereby the engaging element 13 is not moved in a direction perpendicular to the direction of action x.

In the intermediate position of the suction nozzle 1 shown in fig. 4, the actuator 5 is further retracted, so that the engaging element 12 of the suction channel 4 is moved towards the transition between the operating region 14 and the operating region 15. The engaging element 13 of the seal 9 is no longer located in the operating region 18 of the parallel guide surface section 22, but rather in the raised operating region 17, i.e. on the raised guide surface section 23. As the actuator 5 continues to be compressed, the snap-in element 13 of the seal 9 is thus moved away from the surface to be cleaned, i.e. upwards in the figure, along the slope of the operating region 17. Whereby the seal 9 is lifted from the surface to be cleaned. The engaging element 12 of the suction channel 4 simultaneously reaches the deepest point inside the first displacement device 7, i.e. the deepest point inside the operating region 14 designed parallel to the direction of action x. Thereby, the suction port 29 is placed on the surface to be cleaned. The further movement of the engaging element 12 inside the first displacement device 7 does not bring about a further movement of the suction channel 4 or the suction opening 29, but only moves the engaging element 13 of the seal 9 inside the second displacement device 8, so that the seal 9 is lifted from the surface to be cleaned.

When the actuator 5 is fully retracted, the carpet floor position shown in fig. 5 is finally achieved, in which the two engaging elements 12, 13 reach the end position of the displacing devices 7, 8.

By means of the shape of the guide surface sections 19 to 23 with parallel and rising movement of the first and second movement devices 7, 8, a movement sequence is obtained from the hard floor position of the illustrated suction nozzle 1 to the carpeted floor position, which movement sequence comprises a rapid lowering of the suction channel 4 first towards the surface to be cleaned, during which the sealing element 9 maintains its position, followed by a relatively slow lowering of the suction channel 4, during which the sealing element 9 is not yet moved at all times, and finally the lifting of the sealing element 9 from the surface to be cleaned, during which the suction channel 4 remains in the position lowered onto the surface to be cleaned.

As an alternative to this, a movement sequence of the suction nozzle 1 can also be considered, in which the suction channel 4 and the sealing element 9 are moved simultaneously, i.e. the displacement device 7, 8 has an operating region 14, 18 without

guide surface sections

19, 22, which are formed parallel to the direction of action x of the actuator 5. A further advantage is that the sealing element 9 can be moved away from the surface to be cleaned particularly quickly, and the user of the suction nozzle 1 therefore only has to overcome the high frictional resistance between the surface to be cleaned, for example a carpeted floor, and the sealing element 9 for a short time.

Although the invention has been explained only by means of a movement of the suction nozzle 1 from the hard floor position to the carpeted floor position, it is clear that the direction of movement can also be reversed, so that (starting from the retracted actuator 5) the suction channel 4 and the seal 9 pass from the carpeted floor position to the hard floor position.

List of reference numerals

1 suction nozzle

2 suction cleaning device

3 case

4 suction channel

5 actuator

6 driving device

7 first moving device

8 second moving device

9 sealing element

10 first guide surface

11 second guide surface

12 bite element

13 bite element

14 operating area

15 operating area

16 operating area

17 operating area

18 operating area

19 guide surface section

20 guide surface section

21 guide surface section

22 guide surface section

23 guide surface section

24 basic equipment

25 bar part

26 handle

27 switch

28 electric cable

29 suction port

30 wheel

31 support

Direction of x action

Claims

1. A suction nozzle (1) for a suction cleaning device (2), having a housing (3) and a suction channel (4) opening into a suction opening (29) for connection to a fan of the suction cleaning device (2), wherein the suction channel (4) and/or the suction opening (29) can be moved from a first position to a second position by means of an actuator (5) and can be moved in the opposite direction, characterized in that the suction nozzle (1) has a transmission (6) which is operatively connected to the actuator (5) and is movably arranged on the housing (3) and has a first displacement device (7) for displacing the suction channel (4) and/or the suction opening (29) relative to the housing (3) and a second displacement device (8) for displacing a seal (9) relative to the housing (3), wherein, the first displacement device (7) and/or the second displacement device (8) have a plurality of operating regions (14, 15, 16, 17, 18) which correspond to different positions of the suction channel (4) and/or the suction opening (29) and/or the seal (9) relative to the housing (3).

2. A suction nozzle (1) according to claim 1, characterized in that the first displacement means (7) provide a raised first guide surface (10) for the engaging element (12) of the suction channel (4) and/or of the suction opening (29) on the basis of the direction of action x of the actuator (5), so that the suction channel (4) and/or the suction opening (29) can be displaced from the surface to be cleaned on the basis of the orientation of the suction nozzle (1) during normal suction operation.

3. A suction nozzle (1) according to claim 1, characterized in that the suction channel (4) and/or the suction opening (29) can be moved from a hard floor position to a carpeted floor position and vice versa by means of the actuator (5).

4. A suction nozzle (1) according to claim 1, characterized in that the first moving means (7) provide a raised first guide surface (10) for the biting element (12) of the suction channel (4) and/or of the suction opening (29) on the basis of the direction of action (x) away from the actuator (5).

5. A suction mouth (1) according to claim 1, characterized in that the seal (9) is a brush element.

6. A suction nozzle (1) according to claim 1, characterized in that the second moving means (8) provide a second guide surface (11) for the descent of the engaging element (13) of the seal (9) on the basis of the direction of action (x) of the actuator (5), so that the seal (9) can be moved towards the surface to be cleaned on the basis of the orientation of the suction nozzle (1) during normal suction operation.

7. A suction nozzle (1) according to claim 6, characterized in that the second moving means (8) provide a descending second guide surface (11) for the biting element (13) of the seal (9) on the basis of the direction of action (x) away from the actuator (5).

8. A suction nozzle (1) according to claim 1, characterized in that the operating area (14, 15, 16) of the first movement means (7) has guide surface sections (19, 20, 21) with mutually different inclinations for guiding the engaging element (12) of the suction channel (4) and/or the suction opening (29).

9. A suction nozzle (1) according to claim 1, characterized in that the operating areas (17, 18) of the second movement means (8) have guide surface sections (22, 23) with mutually different inclinations for the engaging elements (13) for guiding the seal (9).

10. A suction nozzle (1) according to claim 8, characterized in that the guide surface section (19) of the operating area (14) of the first moving means (7) and the guide surface section (22) of the operating area (17) of the second moving means (8) are designed parallel to the direction of action (x) of the actuator (5).

11. A suction nozzle (1) according to claim 8, characterized in that the guide surface sections (19, 20, 21) of the first movement means (7) and the guide surface sections (22, 23) of the second movement means (8) are arranged relative to each other such that, when the engaging element (12) of the suction channel (4) and/or the suction opening (29) is moved parallel to the direction of action (x) of the actuator (5), a movement of the engaging element (13) of the seal (9) which is not parallel to the direction of action (x) and vice versa is simultaneously effected.

12. A suction nozzle (1) according to claim 1, characterized in that the first movement means (7) and the second movement means (8) are arranged opposite each other and designed such that, depending on the position of the suction nozzle (1) during normal suction operation, a lowering movement of the sealing member (9) is simultaneously effected upon a lifting movement of the suction channel (4) and/or the suction opening (29) and vice versa.

13. A suction nozzle (1) according to claim 12, characterized in that the guide surface sections (19, 20, 21) of the first movement means (7) and the guide surface sections (22, 23) of the second movement means (8) are arranged opposite each other and designed such that, depending on the position of the suction nozzle (1) during normal suction operation, a lowering movement of the sealing element (9) is simultaneously effected upon a lifting movement of the suction channel (4) and/or the suction opening (29) and vice versa.

14. A suction mouth (1) according to claim 1, characterized in that the transmission means (6) is a guide chute.

15. A suction cleaning device (2) with a suction nozzle (1) according to any one of the preceding claims.

16. A method for operating a suction nozzle (1) according to one of claims 1 to 14, wherein the suction opening (29) of the suction nozzle (1) and/or a suction channel (4) opening into the suction opening (29) can be moved from a first position to a second position by means of an actuator (5) and can be moved in the opposite direction, characterized in that both the suction channel (4) and/or the suction opening (29) and the seal (9) are moved relative to the housing (3) of the suction nozzle (1) in such a way that the housing (3) maintains a constant spacing relative to the surface to be cleaned on the basis of the orientation of the suction nozzle (1) during normal suction operation.

17. Method according to claim 16, characterized in that the suction opening (29) of the suction nozzle (1) and/or the suction channel (4) opening into the suction opening (29) can be moved from the hard floor position to the carpeted floor position by means of the actuator (5) and can be moved in the opposite direction.

18. Method according to claim 16, characterized in that both the suction channel (4) and/or the suction opening (29) and the seal (9) are moved in opposite directions relative to the housing (3) of the suction nozzle (1), so that the housing (3) is kept at a constant distance from the surface to be cleaned, depending on the orientation of the suction nozzle (1) during normal suction operation.