EP3264961A1

EP3264961A1 - Floor nozzle

Info

Publication number: EP3264961A1
Application number: EP15709148.9A
Authority: EP
Inventors: Julia Baumgart; Stephan Siegel; Christoph HÖRSCH; Roger Knee; Melanie KNÖDLER
Original assignee: Alfred Kaercher SE and Co KG
Current assignee: Alfred Kaercher SE and Co KG
Priority date: 2015-03-06
Filing date: 2015-03-06
Publication date: 2018-01-10
Also published as: CN107427173A; CN107427173B; WO2016141959A1

Abstract

Floor nozzle for a vacuum cleaner, comprising a floor body (66), on which is arranged a suction channel (66) having a suction-channel wall (72), a suction-channel ceiling (70) and a suction-channel chamber (82), wherein the suction-channel wall (72) is seated on the suction-channel ceiling (70), the suction-channel chamber (82) is formed between the suction-channel wall (72) and the suction-channel ceiling (70), the suction channel (68) is open opposite the suction-channel ceiling (70) and at least one suction mouth opening (86), which is provided for fluid-active connection to a suction subassembly, opens out into the suction-channel chamber (82) at the suction-channel ceiling (70), characterized in that the suction-channel ceiling (70) has arranged on it at least one rib (114, 116), which is positioned in the suction-channel chamber (82) and which has a region (117) projecting beyond an envelope plane (92) of an end side (90) of the suction-channel wall (72), said envelope plane being located opposite the suction-channel ceiling (70), or which has an end (118) located on the envelope plane (92).

Description

floor nozzle

The invention relates to a floor nozzle for a vacuum cleaner comprising a bottom body to which a suction channel with a Saugkanalwandung, a Saugkanaldecke and a Saugkanalraum is arranged, the Saugkanalwandung sits on the Saugkanaldecke, the Saugkanalraum formed between the Saugkanalwandung and the Saugkanaldecke, the suction channel the Saugkanaldecke opposite is open and at least one suction port, which is provided for fluidly effective connection with a suction unit, opens at the Saugkanaldecke in the Saugkanalraum.

Floor nozzles for a vacuum cleaner, for example, from the

DE 20 2009 010 089 U1, JP 11-206645, EP 1 145 676 B1, the

DE 10 2007 057 349 B4 and GB 2 471 164 B are known.

The invention has for its object to provide a floor nozzle of the type mentioned, which allows good energy efficiency, a good cleaning result.

This object is achieved in the floor nozzle of the type mentioned in the present invention that at least one rib is disposed on the Saugkanaldecke, which is positioned in the Saugkanalraum and which has a region which extends beyond a Saugkanaldecke opposite Einhüllendenebene an end of the Saugkanalwandung or which with one end at the envelope level.

When cleaning a textile structure and in particular a carpet, the floor nozzle is placed with the bottom body on the surface to be cleaned. The end face of the Saugkanalwandung and thus the Einhüllendenebene is located on the surface to be cleaned. The at least one rib is flush with the end face or protrudes beyond this end face. It can thereby fibers abut and in particular penetrate into fibers of the textile structure; the Saugkanalwandung superior or flush with her lying at least one rib then provides an additional combing through the textile structure. This improves the dust pickup.

The at least one rib can be easily positioned on the suction channel.

It is favorable if the at least one rib is arranged at a distance from a longitudinal wall of the suction channel wall, wherein the longitudinal wall is at least approximately parallel to a front wall of the floor nozzle. As a result, it is possible in a simple manner to provide additional combing through of a textile structure in a textile surface cleaning function of the floor nozzle.

In one embodiment, the at least one rib is connected to at least one transverse wall of the Saugkanalwandung. This results in a stable training. There are dead zones avoided in the suction, in which dust can accumulate.

In one embodiment, the at least one rib is approximately rectilinear. This makes it easy to produce. Furthermore, it can be easily positioned in the suction channel. It does not appreciably reduce an area of the Saugkanalraums and ensures the additional combing a textile structure. The at least one

The rib may also have a non-rectilinear shape such as a meander shape or a wave shape or a zigzag shape.

For the same reason, it is favorable if the at least one rib is aligned parallel or at an acute angle of at most 15 ° to a front wall of the floor nozzle. It is then not hampered the normal function of the Saugkanalraums and thereby provided for an additional combing to improve the cleaning result. In one embodiment, a first rib is disposed between a first transverse wall of the suction passage wall and the at least one suction port, and a second rib is disposed between the at least one suction port and a second transverse wall of the suction passage wall, wherein in particular the first rib and the second rib are aligned with each other are. As a result, a combing of a textile structure can be achieved over a large length region, which essentially corresponds to the corresponding length of the suction channel space minus the length of the suction orifice.

It is provided in particular that the at least one rib projects over the envelope plane at a distance in the range of 0 mm to 4 mm and in particular at a distance in the range between 0 mm and 2 mm.

As a result, an effective combing of a textile structure can be achieved. The distance is the distance between a tip at the end of the at least one rib and the envelope plane. At the distance 0 mm, this end is at the envelope level. It is advantageous if the Saugkanalwandung without interruption surrounds the Saugkanalraum. This makes it possible to achieve effective dust absorption with good suction power.

In one embodiment, the suction channel wall includes a first longitudinal wall, a spaced second longitudinal wall, a first transverse wall and a second transverse wall spaced from the first transverse wall, wherein each of the first longitudinal wall and the second longitudinal wall are connected to the first transverse wall and the second transverse wall. It can thereby form a circumferential Saugkanalwandung with a correspondingly good suction result.

In particular, end faces of the first longitudinal wall, the second longitudinal wall, the first transverse wall and the second transverse wall lie in a plane at least relative to an envelope plane. The front pages themselves can while lying at an angle to the envelope plane. As a result, the suction channel can be applied on all sides to a surface to be cleaned and in particular textile surface. In one embodiment, the suction channel has a rectangular shape at an open side facing the surface to be cleaned. This results in a good suction result.

In one embodiment, the suction channel has an area in the range between 50 cm ² and 200 cm ² at an open side and in particular has an area in the range between 50 cm ² and 100 cm ² . This results in an optimization between dust pickup and suction force or pushing force. It is favorable if a first longitudinal wall and / or a second longitudinal wall of the suction channel wall has an end face oriented at an acute angle with respect to the envelope plane, the acute angle being in the range between 5 ° and 15 °. At a suction edge of the suction channel then there is a finite suction edge angle. A flat suction edge angle allows dirt particles to pass through and a larger contact surface to a textile structure increases the suction force. A steeper angle allows combing fibers of a textile structure, but then the suction and thus the dust absorption is reduced. Dirt particles are pushed away by a steeper angle rather than sucked. With an angular orientation in the range between 5 ° and 15 °, the ratio between suction force and dust absorption can be optimized.

In particular, a distance at the end face of the first longitudinal wall and / or the second longitudinal wall increases away from the suction channel space. This results in an optimization between suction and dust pickup.

It is advantageous if the Saugkanalwandung is relatively sharp on a suction edge. For this purpose, it is provided that the Saugkanalwandung on her forehead side has an edge radius of at most 2 mm and in particular of at most 1 mm and in particular of the highest 0.5 mm. This allows the Saugkanalwandung at its edge easier to penetrate into fibers of a textile structure. It provides for (additional) combing through which the dust absorption is improved.

For an optimized suction, it is also advantageous if a depth of the Saugkanalraums based on an open side varies by appropriate design of the Saugkanaldecke. This can be optimized

Forming flow patterns.

It is particularly favorable if the suction channel space in the region of the at least one suction channel mouth has its greatest depth with respect to the open side and the depth decreases from this region to transverse walls.

It is particularly advantageous if the bottom body at least partially in one or more areas which come into contact with a surface to be cleaned, an average roughness R _z in the range between 35 pm and 55 m at least with respect to a thrust direction of the floor nozzle. The increased surface roughness on a surface of the bottom body and in particular on the Saugkanalwandung provides improved dust absorption values probably due to improved combing a textile structure.

It is favorable if a skid device is provided which has a support surface for a surface to be cleaned, wherein the support surface lies at least approximately on the envelope plane. This allows the suction channel in a "correct position" with respect to a surface to be cleaned drive over the surface to be cleaned. There may be a small defined offset between the support surface and the envelope plane, which is intended to compensate for penetration of the skid device into the surface to be cleaned. It is also advantageous if a distance of the first tilting axis to the envelope plane is at most 15 mm. It is in the operation of the floor nozzle then close to the floor to be cleaned and it is achieved a good circulation.

There is provided a connection for a suction pipe, wherein a flexible hose between the connection and the at least one suction mouth is arranged. The flexible hose makes it easy to reach a fluid seal by being sealed to corresponding fittings. The flexible hose allows mobility within the floor nozzle via one or more tilting joints, without affecting the tightness.

In one embodiment, channels are arranged on a front wall of the floor nozzle between an upper side and a lower side. These

Channels serve, when the front wall abuts against a wall, that air from the top to the bottom can be provided to optimize the suction result. They are formed for example by grooves in the front wall or between ribs of the front wall.

In one exemplary embodiment, a first tilting joint with a first tilting axis and a second tilting joint spaced apart from the first tilting joint are provided with a second tilting axis, the first tilting axis and the second tilting axis being parallel to one another. There is a double tilt joint provided. This results in a favorable driving behavior of the floor nozzle over a surface to be cleaned. Both in forward movements and backward movements of the floor nozzle arise margins, which ensure that the floor nozzle rests as flat as possible on the surface to be cleaned.

It is favorable if the first tilting axis is arranged in the vicinity of the suction channel, wherein the first tilting axis lies at a distance of at most 10 mm from the suction channel, or that the first tilting axis lies against the suction channel Such a bearing ensures that a tilting moment is kept small and tilting during forward movement is prevented and tilting during a backward movement is avoided. The second tilting joint is arranged in particular in the region of a roller device.

It is favorable if the bottom body has a width in the range between 220 mm and 320 mm and in particular the floor nozzle has a width in the range between 220 mm and 320 mm. Basically, the greater the energy efficiency for a floor nozzle, the broader it is, since one hub covers a larger area. The narrower the bottom nozzle is in the width direction, the better the dust pickup because the suction power concentrates on a smaller area. Due to the mentioned width range, an optimum of the ratio between dust absorption and energy efficiency is provided.

In one embodiment, the floor nozzle according to the invention also has a hard surface cleaning function. A switching device is provided, by means of which it is possible to switch between a textile surface cleaning function and a hard surface cleaning function, wherein in the textile surface cleaning function the suction channel wall can be applied with its end face to the surface to be cleaned. The floor nozzle can be optimized with regard to suction result and energy efficiency both for the textile surface cleaning function and for the hard surface cleaning function.

In one embodiment, a detectably movable bottom engaging device such as a rubber lip device or brush device is provided, which projects beyond the Saugkanalwandung in Hartflächenreinigungsfunktion, so that the ground contact device can be applied to the surface to be cleaned and the Saugkanalwandung spaced from the surface to be cleaned. This allows the floor nozzle in the hard surface cleaning function to be optimized separately from the textile surface cleaning function. In particular, the floor installation device includes an area in which the at least one suction channel space is positioned. As a result, optimized energy efficiency values and dust absorption values can be achieved both for the textile surface cleaning function and for the hard surface cleaning function.

It has proved to be advantageous if the enclosed area has an area in the range between 110 cm ² and 250 cm ² .

In particular, the at least one suction orifice is positioned in the enclosed area in order to allow extraction with a structurally simple construction of the floor nozzle. It is particularly advantageous if the floor installation device has at least one recess on one or more transverse sides, which fluidly connects an outer space with the enclosed area. Basically, the rubber lip device should provide a sealed area on the (hard) surface to be cleaned. By means of the at least one recess on a transverse side, a transverse flow can be provided in order to obtain an optimized suction result.

It can further be provided that a front side of the floor installation device comprises continuous recesses for the passage of dirt particles into the enclosed area. This will do that

Cleaning result improved.

It is particularly advantageous if a support device for the floor nozzle is provided in the hard surface cleaning function, which in particular comprises a roller device, wherein a positioning of the support device is coupled to the positioning of the floor installation device. As a result, the floor installation device does not have to assume the full support function in the hard surface cleaning function. This can, for example a softer material may be used for the ground engaging device and, for example, a rubber lip of the ground engaging device is repositionable to allow for good adaptability to a ground surface. This results in a simple operation, since during the "activation" of the hard surface cleaning function, the support device is brought into its activation position.

In one embodiment, the ground engaging device is disposed on a carrier that is movable relative to the bottom body. The switching device acts on the carrier and brings the carrier into a position corresponding to the textile surface cleaning function, in which the floor installation device is not effective, or the hard surface cleaning function, in which the floor installation device can be applied to a floor to be cleaned.

It is advantageous if a seal and / or circumferential wall is arranged on the carrier and a circumferential wall and / or a seal on the bottom body, wherein in the position of the bottom contact device of the hard surface cleaning function, the wall is pressed against the seal. It can thereby achieve a sealing of the bottom body in a housing for the hard surface cleaning function. This seal is made automatically at the transition to the hard surface cleaning function. As a result, leaks are reduced or prevented, which can lead to energy losses.

The following description of preferred embodiments is used in conjunction with the drawings for further explanation of the invention. 1 shows a perspective view of an embodiment of a floor nozzle according to the invention for a vacuum cleaner in a textile surface cleaning function; a bottom perspective view of the floor nozzle according to Figure 1; a plan view from below of the floor nozzle according to Figure 1; a sectional view taken along line 4-4 of Figure 3; a sectional view taken along the line 5-5 of Figure 3; an enlarged partial view in the view of Figure 5; an enlarged view of the area X of Figure 6 (a); a sectional view taken along the line 7-7 of Figure 3; the same view as Figure 1 in a Hartflächenreinigungs- function with extended Bodenanlageeinrichtung; a sectional view taken along line 4-4 of Figure 3 in the hard surface cleaning function; and

Figure 10 is a sectional view taken along line 5-5 of Figure 3 in the

Hard surface cleaning function.

An embodiment of a floor nozzle, which is shown in FIGS. 1 to 10 and designated therein by 10, comprises a housing 12. The housing 12 has a front wall 14, a rear wall 16, which is spaced from the front wall 14, a first side wall 18, and a second side wall 20 spaced from the first side wall 18. The first side wall 18 is connected to the front wall 14 and the rear wall 16. Further, the second one

Side wall 20 connected to the front wall 14 and the rear wall 16. The housing 12 also has a housing cover 22. The housing cover 22 defines an upper side 24 of the housing 12.

The housing 12 has the upper side 24 opposite to a bottom 26 (Figures 2, 3).

Between the front wall 14, the rear wall 16, the first side wall 18, the second side wall 20 and the housing cover 22, a housing interior 28 is formed. This housing interior 28 is laterally covered by the side walls 18, 20, covered by the front wall 14 to the front, back through the rear wall 16 and up through the

Housing cover 22 covered.

In one embodiment, the housing 12 has at least approximately a cuboid shape.

On the housing 12 sits a connection 30 for a suction tube. In this connection 30, a suction tube can be inserted and it is thereby a fluid-effective connection to a suction unit of a vacuum cleaner produced. Via the connection 30, the floor nozzle 10 can also be fixed mechanically to the corresponding suction pipe.

In one exemplary embodiment, a roller device 32 is arranged on the housing 12 in the region of the rear wall 16 outside the housing 12. The roller device 32 comprises one or more rollers, via which the floor nozzle 10 can be supported on a floor surface. The roller or rollers of the roller device 32 are rotatable about an axis 34. The axis 34 is aligned parallel to the front wall 14. On a holder 36 for the role or roles of the roller device 32 sits a web 38, on which in turn the port 30 is seated. The connection 30 comprises a connection body 40, in which a recess 42 is formed. The recess 42 is cylindrical. In them, the suction tube can be inserted and fixed.

The recess 42 is formed for example in a seated on the connecting body 40 pipe section 44.

With the pipe section 44, a flexible hose 46 is connected, which leads from the pipe section 44 into the housing interior 28 to a mouthpiece 88.

In one embodiment, the connecting body 40 has a side 48 which is formed so that a housing of a vacuum cleaner, on which the suction pipe is positioned outside the housing, in a particular position and in particular in a standing position can be applied. The side 48 forms a contact surface for this housing of the vacuum cleaner.

In one embodiment, the holder 36 for the roller device 32 is fixedly connected to the housing 12, wherein it is connected in particular via a web 50 (Figure 2) with the housing 12 at the rear wall 16.

On the holder 36, a tilting joint 52 is formed, which is referred to here as the second tilting joint. This second tilting joint 52 is formed, for example, in that the holder 36 has a cylindrical portion 54 on which an element 56 is pivotally mounted, on which in turn the web 38 is firmly seated. The element 56 is orbitally guided on the cylindrical portion 54.

An axis of the cylindrical portion 54 coincides with the axis 34 of the roller means 32 for rotational movement of the roller or rollers.

Accordingly, a second tilting axis 58 is formed, which coincides with the axis 34.

On the front wall 14 of the housing 12 spaced channels 60 are arranged, which extend between the top 24 and the bottom 26. The Channels 60 form flow channels. They are formed for example by grooves in the front wall 14.

When the floor nozzle 10 is pushed with the front wall 14 against a wall, then air can flow from the top 24 through the channels 60 to the bottom 26. As a result, a sufficient suction flow can be provided in order to obtain a good suction result, even when contacting the floor nozzle 10 with its front wall 14, on a wall (room) even close to the wall.

The channels 60 are oriented in particular perpendicularly with respect to a lower edge 62 of the front wall 14 on the underside 26.

When using the floor nozzle 10, a thrust direction 64 is provided (FIG. 1) which corresponds to the direction from the rear wall 16 to the front wall 14.

The nozzle has a width B between the first side wall 18 and the second side wall 20 which is in the range between 220 mm and 320 mm. In one embodiment, the width B is 260 mm.

Basically, the greater the width B of the floor nozzle, the greater the energy efficiency for vacuuming with a floor nozzle 10, since then a larger area is run over with a stroke. On the other hand, a dust pick-up by a floor nozzle 10 in a suction operation is better, the smaller the width B, because then the suction power can concentrate on a correspondingly smaller area.

The above-mentioned range for the width B results in a good relationship between dust pickup and energy efficiency (both in terms of a cloth surface cleaning function and a hard surface cleaning function). In the housing interior 28, a bottom body 66 is arranged, which is in particular plate-shaped. The bottom body 66 is fixedly arranged in the housing interior 28 (wherein it may be formed in several parts with mutually movable parts).

It is positioned spaced from the front wall 14 and the first side wall 18 and the second side wall 20.

At the bottom body 66, a suction channel 68 is formed. The suction channel 68 has a Saugkanaldecke 70, which is formed in particular by the bottom body 66. The suction channel 68 also has a Saugkanalwandung 72. The Saugkanalwandung is, for example, integrally disposed on the Saugkanaldecke 70 and protrudes beyond this. In one embodiment, the Saugkanalwandung 72 includes a first longitudinal wall 74. The first longitudinal wall 74 is spaced from the front wall 14 of the housing 12 and aligned at least approximately parallel to this front wall 14. Further, the Saugkanalwandung 72 includes a second longitudinal wall 76 which is parallel to the first longitudinal wall 74 and spaced therefrom.

The second longitudinal wall 76 is aligned, for example, parallel to the rear wall 16.

The first longitudinal wall 74 and the second longitudinal wall 76 are transversely and in particular perpendicular to the side walls 18, 20th

The first longitudinal wall 74 and the second longitudinal wall 76 are each connected to a first transverse wall 78 and a second transverse wall 80. The first transverse wall 78 lies adjacent to the second side wall 20 of the

Housing 12, but spaced from this. The second transverse wall 80 is adjacent to the first side wall 18 of the housing 12, but spaced apart to this. In particular, the first transverse wall 78 and the second transverse wall 80 are aligned parallel to the first side wall 18 and second side wall 20, respectively. In one embodiment, the first transverse wall 78 and the second transverse wall 80 are at least approximately perpendicular to the first longitudinal wall 74 and the second longitudinal wall 76. The area enclosed by the suction channel wall 72 then has a rectangular shape. The suction channel 68 has a suction channel space 82 which lies between the suction channel cover 70 and the suction channel wall 72. The Saugkanalwandung 72 surrounds without interruption the Saugkanalraum 82, d. H. includes this laterally. The suction channel space 82 is open at the bottom of the housing 12. It is when the floor nozzle 10 is properly positioned to a surface to be cleaned and the bottom 26 faces the surface to be cleaned, open to the surface to be cleaned through an open side 84. In a central region of the Saugkanalraums 82 a suction port 86 is arranged. The hose 46, which is particularly flexible, is connected to a mouthpiece 88, on which the suction orifice 86 is formed. If the floor nozzle 10 is connected to a vacuum cleaner and the vacuum cleaner via a suction unit generates a corresponding suction flow, then this suction flow is at the suction port 86 at. The suction port 86 is formed so that the mouthpiece 88 does not project into the suction channel space 82. A corresponding end face of the mouthpiece 88 is set back relative to the Saugkanaldecke 70 or at most flush. The Saugkanalwandung 72 has an end face 90. The end face 90 of the suction channel wall 72 (with the first longitudinal wall 74, the second longitudinal wall 76, the first transverse wall 78 and the second transverse wall 80) has an envelope plane 92 (FIGS. 5, 6 (a)).

The suction channel 68 has a larger cross-sectional area at the open side 84 than the suction port 86. The suction channel 68 provides compared to the suction port 86 has an enlarged Absauggebereich on a surface to be cleaned.

The floor nozzle 10 comprises a skid device 94. The skid device 94 is arranged outside the suction channel 68 on the bottom body 66. The skid device 94 has a support surface 96, which is a sliding surface and over which the floor nozzle 10 can be supported on the surface to be cleaned during operation in a textile surface cleaning function.

The support surface 96 lies on the envelope plane 92 or a defined small offset can be provided. The offset serves to compensate for dipping the support surface 96 into textile material.

Furthermore, a support surface 98 of the roller device 32 can lie on the envelope plane 92 due to the second tilting joint 52. The support surface 96 of the skid device 94 lies in particular adjacent to the support surface 98 of the roller device 32.

The end face 90 of the Saugkanalwandung 72 is located at the Einhüllendenebene 92. The end face 90 itself is not formed parallel to the Einhüllendenebene 92 in one embodiment, but is at an angle to this (Figures 6 (a) and 6 (b)). The end face 90a of the first longitudinal wall 74 lies at an acute angle 100 to the envelope plane 92. The end face 90a is present especially trained. The acute angle is in the range between 5 ° and 15 °.

In one embodiment, the acute angle 100 is 9 °.

A distance of the end face 90 from the envelope plane 92 thereby increases away from the suction channel 68 to the front wall 14.

Correspondingly, the second longitudinal wall 76 has an end face 90b, which is oriented at an angle to the envelope plane 92, and in particular is oriented at an acute angle 102. This acute angle 102 is also in the range between 5 ° and 15 ° and in particular at about 9 °. A distance between the end face 90b of the second longitudinal wall 76 and the envelope plane 92 increases from the suction channel 68 towards the rear wall 16.

The acute angles 100, 102 form suction edge angles on the suction channel wall 72. The acute angles 100, 102 are adjusted so that a good relationship between the suction force of the base body 66 with a textile surface cleaning function on the surface to be cleaned and the dust absorption occurs. Basically, a shallow angle 100, 102 dirt particles rather through and through a larger contact surface to the surface to be cleaned increases the suction force. A steeper acute angle 100, 102 allows a combing through of fibers of the textile surface to be cleaned, but reduces the suction force and thus the dust absorption. Dirt particles are pushed away by a steeper angle rather than sucked. It has been shown that an optimized ratio with respect to suction force and dust absorption is set by the mentioned range for the acute angles 100, 102 between 5 ° and 15 °. Edges 104 on the Saugkanalwandung 72 to the Saugkanalraum 82 are formed as sharp as possible. As a result, sealing of the suction channel 68 is achieved in the case of a textile cleaning function in that the suction channel wall 72 can just penetrate into the textile structure. There is a good submersibility in fibers of the textile structure. This helps to comb through the textile structure (such as a carpet) to improve the dust absorption.

As a criterion for the sharp edge of the corresponding edges 104, the radius R of an inscribed circle 106 is used at the edge 104 (FIG. 6 (b)). This radius is in the range between 0 mm and 2 mm. In the case of a radius of 0 mm results in an ideal edge.

In one embodiment, this radius R is 0.3 mm.

A width of the suction channel 68 is slightly smaller than the width B of the floor nozzle 10. It is for example 240 mm.

A transverse width perpendicular thereto is for example 32 mm.

One surface of the suction channel 68 at the open side 84 is in the range between 60 cm ² and 200 cm ² .

In one embodiment, this area is 77 cm ² .

The suction channel space 82 has a varying depth perpendicular to the open side 84 over a width direction 108 (see FIG. This varying depth is provided by appropriate design of Saugkanaldecke 70 (see also Figure 4).

In this direction 110 (depth direction), the depth of the suction channel space 82, starting from the suction orifice 86, decreases toward the first transverse wall 78 and the second transverse wall 80, respectively. In the area of the suction orifice 86, it has in the Depth direction 110 its greatest depth. At the first transverse wall 78 and the second transverse wall 80, it has its smallest depth, but the depth at the first transverse wall 78 and the second transverse wall 80 is finite (ie greater than zero). It is for example in a range between 1 mm and 10 mm.

In the cross section (see Figure 4), which includes the width direction 108 and the depth direction 110, the Saugkanalraum 82 has a trapezoidal shape. The suction channel space 82 becomes laterally flatter. This will be a good one

Dust pickup reached.

At the suction channel 68, a rib structure 112 is arranged. The rib structure 112 serves in a textile surface cleaning function of the floor nozzle 10 for additional combing of the textile structure such as a carpet. In one embodiment, the rib structure 112 includes a first rib 114 and a second rib 116. The first rib 114 and the second rib 116 are each rib-shaped. The first rib 114 and the second rib 116 are spaced apart from the first longitudinal wall 74 and spaced from the second longitudinal wall 76 at the Saugkanaldecke 70.

They extend to the open side 84 through the Saugkanalraum 82 and project beyond the Saugkanalwandung 72 at the open side 84 with a portion 117 with a distance A (Figures 5, 6 (a)). An outer end 118 of the first rib 114 and the second rib 116 is located at the distance A to the envelope plane 92 and thereby outside the Saugkanalraums 82. The area 117 is located between the Einhüllendenebene 92 and the end 118th

When the floor nozzle 10 abuts the surface to be cleaned with the end face 90 of the Saugkanalwandung 72, then penetrate the first rib 114 and the second rib 116 due to the distance A in the surface to be cleaned, to allow combing through. The distance A is up to 4 mm. In one embodiment, the distance A is 1 mm.

The outer end 118 may also be at the envelope level 92. The distance A is then zero; There is then no area 117. Also in this case, an additional combing of a textile structure is achieved.

The first rib 114 and the second rib 116 in one embodiment are closer to the first longitudinal wall 74 than the second longitudinal wall 76 (the first longitudinal wall 74 being closer to the front wall 14 of the housing 12 than the second longitudinal wall 76).

The first rib 114 and the second rib 116 are bar-shaped and, in one exemplary embodiment, are arranged parallel to the first longitudinal wall 74. The first rib 114 and the second rib 116 have a width perpendicular to the width direction 108, which is considerably smaller than their length in the width direction 108, to form the ridge shape.

The first rib 114 extends between the suction port 86 and the first transverse wall 78. It does not protrude into the suction port 86. The second rib 116 extends between the suction port 86, wherein it does not protrude into this, and the second transverse wall 80th

In one embodiment, the first rib 114 is connected to the first transverse wall 78. The second rib 116 is connected to the second transverse wall 80.

In the depth direction 110, the first rib 114 and the second rib 116 have a varying height following the varying height of the suction channel space 82. In one embodiment, the distance A of the end 118 of the first rib 114 and the second rib 116 along the width direction 108 to the envelope plane 92 is constant, and may be zero. It can also be provided that this distance A varies along the first rib 114 and the second rib 116 in the width direction 108.

The rib structure 112 projects beyond the edges 104 of the suction channel wall 72 in order to allow it to penetrate into a textile structure of a surface to be cleaned.

A surface 120 of the material of the bottom body 66, where it can touch a surface to be cleaned, has a defined average roughness R _z which lies in the range between 35 pm and 55 pm with respect to a sliding direction which is parallel or antiparallel to the thrust direction 64 is. In particular, the surface of the Saugkanalwandung 72 has such a mean roughness R _z .

By such an increased roughness R _z , the dust pickup is improved. This is probably due to the fact that a textile fiber structure is finely combed through.

The floor nozzle 10 comprises a further tilting joint 122, which is referred to here as the first tilting joint. The first tilting joint 122 has a first tilting axis 124 (cf., for example, FIGS. 4 and 5). The first

Tilting axis 124 is parallel to the second tilting axis 58.

The first tilting joint 122 is arranged such that the first tilting axis 124 lies against the suction channel 68, ie, the first tilting axis 124, which is oriented parallel to the width direction 108, passes through the suction channel wall 72. In an alternative embodiment, the first tilting joint 122 is arranged so that the first tilting axis 124 is at most a distance of 10 mm or less from the suction channel 68. Furthermore, the first tilting joint 122 is arranged so "deep" that the first

Tilting axis 124 is highest at a distance of 15 mm to the envelope plane 92.

To form the first tilting joint 122, the floor nozzle 10 comprises a first part 126 and a second part 128 (see FIG. The second part 128 is tiltably connected to the first part 126 via the first tilting joint 122. On the second part 128 of the suction channel 68 is seated with the suction port 86. On the first part 126, the roller device 32 and the second tilting joint 58 are arranged. Between the first part 126 and the second part 128, a free space 130 is formed, which allows the tilting of the second part 128 to the first part 126.

The second part 128 is held on the first part 126 via a bracket 129 with a wire bracket 131. The tube 46 connects the first part 126 with the second part 128.

On the ironing device 129, the first tilting joint 122 with the tilting axis 124 is arranged or formed on the second part 128. The flexible hose 46, when firmly connected to the port 30 and mouthpiece 80, allows for tiltability about the tilt axis 124.

Relative to a height direction 132 (see FIG. 6 (a)), which is perpendicular to the width direction 108, the first tilting joint 122 is lower with respect to its first tilting axis 124 than the second tilting joint 52 with respect to its second tilting axis 58. Via the first tilting joint 122 and the second tilting joint 52, the floor nozzle 10 has a double tilting joint. This results in a favorable driving behavior during a cleaning process, in particular on a textile structure. The Doppelkippgelenkausbildung leaves during forward movements of the floor nozzle 10 in the thrust direction 64 and a backward movement in the opposite direction to the thrust 64 no large freedom space through which can be ensured that the Saugkanalwandung 72 rests as flat as possible on the surface to be cleaned. Due to the "low" position of the first tilting joint 122 with respect to the first tilting axis 124, the tilting moment is kept relatively small there and it can be tilted forward in a forward movement in the thrust direction 64 and lifting the floor nozzle 10 in a backward movement against the thrust 64th avoid.

FIG. 6 (a) schematically shows the position of a force vector during a forward movement in the thrust direction 64. This force vector is denoted by 134. As a result of the arrangement of the first tilting joint 122 as described, tilting forward is avoided.

Furthermore, a force vector is shown in FIG. 6 (a) which is present on the first tilting joint 122 in a reverse movement against the direction of thrust 64. This force vector is designated 136. Due to the design and arrangement of the tilting joint 122, a lifting of the floor nozzle 10 is avoided.

The forces described arise when the cleaning process, the floor nozzle 10, which is held on a suction pipe, by pulling on a handle of the corresponding vacuum cleaner or by pulling on the

Suction pipe in the thrust direction 64 or counter to this is moved. As explained above, the floor nozzle 10 has a textile surface cleaning function, by means of which, in particular, carpet surfaces can be cleaned. In the textile surface cleaning function, the floor nozzle 10 sits with the bottom body 66 and thereby the end face 90 of the suction channel wall 72 on the surface to be cleaned. The envelope plane 92 is parallel to the surface to be cleaned and coincides with an upper surface of the surface to be cleaned. The support surface 96 of the skid device 94 is supported on the surface to be cleaned. The rib structure 112 penetrates into the surface to be cleaned. In FIGS. 1 to 6, the floor nozzle 10 is in its textile surface cleaning function 138.

The suction channel 68 abuts with the Saugkanalwandung 72 on all sides of the surface to be cleaned. The Saugkanalwandung 72 surrounds the Saugkanal- space 82 completely without interruption. The Saugkanalwandung 72 includes the suction channel space 82 without interruption. This results in an effective dust pickup.

The suction channel 68 is optimized in its geometric dimensions and in particular in the width in the width direction 108, in such a way that good dust pickup results from a good suction on the surface to be cleaned and corresponding combing of the textile structure with sufficient size of the area for a Good suction and good pushing force to achieve a high dust absorption with good combability of the textile structure.

The rib structure 112 allows immersion in the fabric and additional combing to increase dust pickup. The acute angle 100, 102 on the end face 90 of the Saugkanalwandung 72 allows a good ratio between the suction force of the bottom body 66 to the surface to be cleaned and dust pickup. The relatively sharp-edged design of the Saugkanalwandung 72 in particular on the first longitudinal wall 74 and the second longitudinal wall 76 at the edge 104 cause a kind of fluid seal on the surface to be cleaned and allow easy immersion in fibers of the textile structure of the surface to be cleaned. This helps to comb through and improves dust collection.

The formation of the Saugkanalraums 82 with varying depth in the depth direction 110 allows optimized cross flow to the suction port 86 back.

The rough surface 120 on the bottom body 66 at least on the end face 90 of the Saugkanalwandung 72 improves the dust pickup probably due to a finer combing through the textile structure of the surface to be cleaned.

The Doppelkippgelenkausbildung with the first pivot joint 122 and the second pivot joint 52 ensures that the bottom body 66 rests as flat as possible on the surface to be cleaned. A tilting moment in a forward movement of the floor nozzle 10 in the thrust direction 64 is kept small and the Abhebegefahr when moving in the opposite direction to the thrust direction 64 is avoided.

The skid device 94, with its support surface 96, via which a supportability is made possible on the surface to be cleaned, ensures that tilting is prevented. It is thereby ensured that the floor nozzle 10 and thus also the suction channel 68 are guided in the "correct" position for the dust pickup over the area to be cleaned. The rib structure 112 has been described above with reference to the first rib 114 and the second rib 116. It is possible that the rib structure is formed differently and that, for example, only one rib is provided or more than two ribs are provided. It can also be arranged differently high ribs in the suction channel 68.

The channels 60 on the front wall 14 ensure that air can be supplied to a region on the suction channel 68 from the top side 24 to a

Form suction flow when the front wall 14 abuts against a wall.

The floor nozzle 10 further includes a hard surface cleaning function 140

(Figures 8 to 10).

In the housing 12, a carrier 142 is arranged, which holds a bottom contact device 144 such as a rubber lip device or brush device. The carrier 142 is movable to the bottom body 66. The carrier 142 is connected via a switching device 146 with a switch 148, which is positioned, for example, on the upper side 24 of the housing 12. The switch 148 has two switch positions, namely a switch position in which the floor nozzle is located in the textile surface cleaning function 138 and a further switch position in which the floor nozzle 10 is located in the hard surface cleaning function 140. In the hard surface cleaning function 140, the bottom contact device 144 may contact a surface to be cleaned. In the textile surface cleaning function 138, the bottom contact device 144 is retracted so that it does not act on a surface to be cleaned and the suction channel wall 72 can be applied with its front side 90 on the surface to be cleaned.

By means of the switching device 146, the carrier can be brought into a position in which the ground engaging device 144 is not effective (FIGS. 1 to 7) and brought into another position in which it is effective (FIGS. 8 to 10).

The ground engaging device 144 has a first longitudinal wall 150. This first longitudinal wall 150 is formed in a rubber lip device from a speaking elastic material ("rubber material"). It is positioned between the front wall 14 of the housing 12 and a front side of the bottom body 66, which is closest to the first longitudinal wall 74 of the suction channel 68. It also has a second longitudinal wall 152 which is spaced from the first longitudinal wall 150. The second longitudinal wall 152, which is also made of a rubber material, is aligned parallel to the first longitudinal wall 150 (see, for example, Figure 10). Furthermore, the bottom contact device 144 has a first transverse wall 154 and a second transverse wall 156. The first transverse wall 154 is connected to the first longitudinal wall 150 and the second longitudinal wall 152. The second transverse wall 156, which is spaced from the first transverse wall 154, is also connected to the first longitudinal wall 150 and the second longitudinal wall 152 (see, for example, Figure 3).

The wall of the bottom contact device 144 with the first longitudinal wall 150, the second longitudinal wall 152, the first transverse wall 154 and the second transverse wall 156 includes a region 158 in the hard surface cleaning function 140. This enclosed area surrounds the suction channel 68, d. H. the suction channel space 82 lies in the enclosed area. In the hard surface cleaning function 140, the envelope plane 92 is spaced from a bottom end 160 of that wall of the bottom fixture 144, d. H. the end face 90 of the Saugkanalwandung 72 does not touch the surface to be cleaned.

The first transverse wall 154 is disposed between the bottom body 66 and the first transverse wall 78 of the housing 12. The second transverse wall 156 of the ground engaging device 154 is disposed between the second transverse wall 80 of the housing 12 and the bottom body 66.

The second longitudinal wall 152 is arranged, for example, in the free space 130 between the first part 126 and the second part 128. The area of the enclosed region 158 is designed so that good dust absorption results with good suction force. The enclosed area 158 has an area which is in the range of 110 cm ² and 250 cm ² . In one embodiment, the area enclosed area is 166 cm ² . A length of the first longitudinal wall 150 and the second longitudinal wall 152 is 248 mm and a length of the first transverse wall 154 and the second transverse wall 156 is 67 mm.

In one embodiment, the bottom contact device 144 has on the first transverse wall 154 and the second transverse wall 156 in each case one or more recesses 162 (cf., for example, FIG. 2), which serve for a fluid-effective connection of the outer space to the enclosed region 158.

In the hard surface cleaning function 140 of the floor nozzle 10, a crossflow can arise over such recesses 162, which improve the extraction result.

In one embodiment, the first transverse wall 154 and the second transverse wall 156 each have a single recess having a length of 25 mm (along the transverse wall 154 or 156) and a height of 5 mm.

It may further be provided that the first longitudinal wall 150 has recesses 164 towards its end 160 (see FIG. Basically, the ground engaging device 144, when placed on the surface to be cleaned of a hard floor, provides a seal to achieve a good suction result. The recesses 162 provide for the formation of a cross flow. The recesses 164 allow the passage of dirt particles into the enclosed area 158 for suction.

In FIGS. 8 to 10, the floor nozzle 10 is closed

Shifting from the textile surface cleaning function 138 shown in the hard surface cleaning function 140. Switching takes place through

Movement of the carrier 142 and then detection of its position in the hard surface cleaning function 140 and the textile surface cleaning function 138. The switching operation via the switching device 146 from the textile surface cleaning function 138 in the hard surface cleaning function 140, the ground support device 144 is moved from a retracted position to an operative position the suction channel 68 is ineffective. The end 160 of the ground engaging device 144 may then seat against the surface to be cleaned.

The floor nozzle 10 is provided with support elements 166, which form a support device for supporting the floor nozzle 10 on the surface to be cleaned in the hard surface cleaning function 140. The support members 166 are formed, for example, as rollers.

In one embodiment, corresponding support members 166 are disposed on corners of a triangle whose apex is toward the roller means 32.

The support elements 166 are arranged on the carrier 142. In the textile surface cleaning function 138 they are not effective, i. H. they have no supporting action.

The support elements 166 are coupled to the switching device 146. The bottom body 66 has the support elements 166 associated with a respective recess 168. When switching the support elements 166 with the ground engaging device 144 is moved and further out of the recess 168 to touch the surface to be cleaned can.

Accordingly, during the switchover from the hard surface cleaning function 140 into the textile surface cleaning function 138 with the retraction of the floor installation device 144, the support elements 166 are retracted.

A wall 170 is arranged on the bottom body 66 facing the carrier 142 (cf., for example, FIG. 4 or FIGS. 9, 10). The wall 170 is circumferential and defines an area which faces away from the enclosed area 158 at a rear side of the bottom body 66.

On the carrier 142 facing the wall is associated with a seal 172, which is also circumferential.

In the hard surface cleaning function 140 with the corresponding position of the carrier 142, the wall 170 is pressed against the seal 172. As a result, the bottom body 66 in the hard surface cleaning function 140 is fluidly sealed to the rear in the housing 12 to prevent false air entrapment.

The wall 170 may accordingly also be arranged on the carrier 142 and the seal 172 may be arranged on the bottom body 66. The combination of the wall 170 and the seal 172 reduces or prevents leaks and thus energy losses.

In the hard surface cleaning function 140 of the floor nozzle 10, it functions as follows:

By the switching device 146 is driven into the hard surface cleaning function 140. For this purpose, the ground contact device 144 is extended via the carrier 142 and, in the case of a rubber lip device, as ground contact device. The rubber material of the rubber lip device on the first longitudinal wall 150, the second longitudinal wall 152, the first transverse wall 154 and the second transverse wall 156 are placed on the surface to be cleaned.

The bottom body 66 is then spaced from the surface to be cleaned, i. H. the end face 90 of the Saugkanalwandung 72 does not touch the surface to be cleaned. Thereby an enclosed area 158 is provided which forms a suction space.

The peripheral wall of the bottom contact device 144 ensures a good seal on the hard surface.

The recesses 162 ensure a sufficiently strong cross flow.

The recesses 164 allow dirt particles into the enclosed space 158.

The area of the enclosed area 158 is designed so that there is a good interaction between suction force and dust absorption.

When switching from the fabric cleaning function 138 to the hard surface cleaning function 140, the combination of the wall 170 with the seal 172 provides leakage prevention.

In the hard surface cleaning function 140, the support elements 166 ensure that the floor nozzle 10 does not have to be supported solely by the material of the floor installation device 144. The material of the ground engaging device 144 may then be chosen to be relatively soft, and in particular chosen so that a corresponding lip (formed by the walls 150, 152, 154, 156) can fold over and conform to the surface to be cleaned. In one exemplary embodiment, the floor installation device 144 is dimensioned such that in the hard surface cleaning function 140, when the end 166 is located on the surface to be cleaned, the end face 90 of the suction channel wall 72 has a distance of approximately 5 mm from the floor to be cleaned.

The thickness of a wall 150, 152, 154, 156, d. H. For example, the thickness of the bottom abutment 144 in the form of a rubber lip in the rubber material is in the range of 0.5 mm to 2 mm.

According to the invention, a floor nozzle is provided which has high energy efficiency and optimized dust absorption both during a cleaning process on a carpet surface and on a hard surface.

LIST OF REFERENCE NUMBERS

floor nozzle

casing

front wall

rear wall

first sidewall

second side wall

housing cover

top

bottom

Housing interior

connection

roller device

axis

holder

web

connection body

recess

pipe section

tube

page

web

second tilt joint

cylindrical area

element

second tilt axis

channel

lower edge

thrust direction

sediment suction

Saugkanaldeckel

Suction channel wall ung first longitudinal wall second longitudinal wall first transverse wall second transverse wall

Suction channel space open side

suction mouth

mouthpiece

front

Einhüllendenebene

Gleitkufeneinrichtung

support surface

Support surface acute angle acute angle

edge

circle

width direction

depth direction

Rib structure first rib second rib

Area

The End

surface

first tilting joint first tilting axis first part

second part

Ironing facility 130 free space

131 wire hanger

132 height direction

134 force vector (forward movement)

136 force vector (backward movement)

138 Textile surface cleaning function

140 hard surface cleaning function

142 carriers

144 ground installation device

146 switching device

148 switch

150 first longitudinal wall

152 second longitudinal wall

154 first transverse wall

156 second transverse wall

158 enclosed area

160 the end

162 recess

164 recess

166 support element

168 recess

170 wall

172 seal

Claims

claims

A floor nozzle for a vacuum cleaner, comprising a bottom body (66) on which a suction channel (68) with a Saugkanalwandung (72), a Saugkanaldecke (70) and a Saugkanalraum (82) is arranged, wherein the Saugkanalwandung (72) on the Saugkanaldecke (70) is seated, the Saugkanalraum (82) between the Saugkanalwandung (72) and the Saugkanaldecke (70) is formed, the suction channel (68) of the Saugkanaldecke (70) opposite open and at least one suction mouth (86), which fluidly effective Connection with a

Suction unit is provided at the Saugkanaldecke (70) in the Saugkanalraum (82) opens, characterized in that at the Saugkanaldecke (70) at least one rib (114, 116) is arranged, which in the Saugkanalraum (82) is positioned and which a region (117) which projects beyond an envelope plane (92) of an end face (90) of the suction channel wall (72) opposite the suction channel cover (70) or which lies at one end (118) at the envelope plane (92).

2. Floor nozzle according to claim 1, characterized in that the at least one rib (114, 116) is arranged at a distance from a longitudinal wall (74, 76) of the suction channel wall (72), wherein the longitudinal wall (74, 76) is at least approximately parallel to one Front wall (14) of the floor nozzle is.

3. floor nozzle according to claim 1 or 2, characterized in that the at least one rib (114, 116) with at least one transverse wall (78, 80) of the Saugkanalwandung (72) is connected.

Floor nozzle according to one of the preceding claims, characterized in that the at least one rib (114, 116) is at least approximately rectilinear.

Floor nozzle according to one of the preceding claims, characterized in that the at least one rib (114, 116) is aligned parallel or at an acute angle of at most 15 ° to a front wall (14) of the floor nozzle.

Floor nozzle according to one of the preceding claims, characterized in that a first rib (114) between a first transverse wall (78) of the Saugkanalwandung (72) and the at least one suction mouth (86) is arranged and a second rib (116) between the at least one Suction port (86) and a second transverse wall (80) of the Saugkanalwandung (72) is arranged, in particular, the first rib (114) and the second rib (116) are aligned with each other.

Floor nozzle according to one of the preceding claims, characterized in that the end (118) of the at least one rib (114) over the envelope plane (92) at a distance (A) in the range of 0 mm to 4 mm and in particular at a distance in a range between 0 mm and 2 mm protrudes.

Floor nozzle according to one of the preceding claims, characterized in that the Saugkanalwandung (72) without interruption surrounds the Saugkanalraum (82).

9. Floor nozzle according to one of the preceding claims, characterized in that the Saugkanalwandung (72) a first longitudinal wall (74), a spaced second longitudinal wall (76), a first transverse wall (78) and to the first transverse wall (78) spaced second Transverse wall (80), wherein in each case the first longitudinal wall (74) and the second longitudinal wall (76) with the first transverse wall (78) and the second transverse wall (80) are connected.

10. floor nozzle according to claim 9, characterized in that end faces (90) of the first longitudinal wall (74), the second longitudinal wall (76), the first transverse wall (78) and the second transverse wall (80) in a plane at least relative to an envelope plane (92) lie.

11. Floor nozzle according to one of the preceding claims, characterized in that the suction channel space (82) on an open side has a rectangular shape (84).

12. Floor nozzle according to one of the preceding claims, characterized in that the suction channel (68) on an open side (84) has an area in the range between 50 cm ² and 200 cm ² .

13. Floor nozzle according to one of the preceding claims, characterized in that a first longitudinal wall (74) and / or a second longitudinal wall (76) of the Saugkanalwandung (72) with respect to the envelope plane (92) at an acute angle (100; 102) oriented End face (90a, 90b), wherein the acute angle (100, 102) is in the range between 5 ° and 15 °.

14. Floor nozzle according to claim 13, characterized in that a distance on the end face (90a; 90b) of the first longitudinal wall (74) and / or the second longitudinal wall (76) increases away from the suction channel space (82).

15. Floor nozzle according to one of the preceding claims, characterized in that the Saugkanalwandung (72) at its end face (90) has an edge radius (R) of at most 2 mm and in particular of at most 1 mm and in particular of at most 0.5 mm.

16. Floor nozzle according to one of the preceding claims, characterized in that a depth of the Saugkanalraums (82) relative to an open side (84) by appropriate design of the Saugkanaldecke (70) varies.

17. Floor nozzle according to claim 16, characterized in that the suction channel space (82) in the region of the at least one Saugkanalmündung (86) has its greatest depth with respect to the open side (84) and the depth of this area to transverse walls (78; decreases.

18. Floor nozzle according to one of the preceding claims, characterized in that the bottom body (66) at least partially in one or more areas which come into contact with a surface to be cleaned, an average roughness R _z in the range between 35 pm and 55 m at least based on a thrust direction (64) of the floor nozzle.

19. Floor nozzle according to one of the preceding claims, characterized by a skid device (94), which has a support surface (96) for a surface to be cleaned, wherein the support surface (96) at least approximately on the Einhüllendenebene (92).

20. Floor nozzle according to one of the preceding claims, characterized by a connection (30) for a suction pipe, wherein a flexible hose (46) between the connection (30) and the at least one suction mouth (86) is arranged.

21. Floor nozzle according to one of the preceding claims, characterized in that on a front wall (14) spaced channels (60) are arranged, which extend from an upper side (24) of the floor nozzle to a bottom (26) of the floor nozzle.

22. Floor nozzle according to one of the preceding claims, characterized by a first tilting joint (122) with a first tilting axis (124) and a first tilting joint (122) spaced second tilting joint (52) with a second tilting axis (58), wherein the first Tilting axis (124) and the second tilting axis (58) are parallel to each other.

23. floor nozzle according to claim 22, characterized in that the first tilting axis (124) in the vicinity of the suction channel (68) is arranged, wherein the first tilting axis (124) at a distance of at most 10 mm to the suction channel (68), or that the first tilting axis (124) is located on the suction channel (68).

24. floor nozzle according to claim 22 or 23, characterized in that the first tilting axis (124) at a distance of at most 15 mm to the envelope plane (92).

25. Floor nozzle according to one of claims 22 to 24, characterized in that the second tilting joint (52) in the region of a roller device (32) is arranged.

26. Floor nozzle according to one of the preceding claims, characterized in that the bottom body (66) or the floor nozzle has a width (B) in the range between 220 mm and 320 mm.

27 floor nozzle according to one of the preceding claims, characterized by a switching device (146) through which between a textile surface cleaning function (138) and a hard surface cleaning function (140) is switchable, wherein in the textile surface cleaning function (138) the Saugkanalwandung (72) with its front side (90) can be applied to the surface to be cleaned.

28. Floor nozzle according to claim 27, characterized by a lockable movable bottom contact device (144), which in the Hartflächen- cleaning function (140) projects beyond the Saugkanalwandung (72), so that the bottom contact device (144) can be applied to the surface to be cleaned and the Saugkanalwandung (72) is spaced from the surface to be cleaned.

29. Floor nozzle according to claim 28, characterized in that the floor installation device (144) encloses an area in which the at least one suction channel space (82) is positioned.

30. Floor nozzle according to claim 29, characterized in that the enclosed area (158) has an area in the range between 110 cm ² and 250 cm ² .

31. Floor nozzle according to claim 29 or 30, characterized in that the at least one suction mouth (86) in the enclosed area (158) is positioned.

32. Floor nozzle according to one of claims 29 to 31, characterized in that the bottom contact device (144) at one or more transverse sides at least one recess (162) which connect an outer space with the enclosed region (158) fluidly effective.

33. Floor nozzle according to one of claims 29 to 32, characterized in that a front side of the bottom contact device (144) through recesses (164) for the passage of dirt particles in the enclosed area (158).

34. Floor nozzle according to one of claims 29 to 33, characterized by a support device (166) for the floor nozzle in the hard surface cleaning function (140), which in particular comprises a roller device, wherein a positioning of the support means (166) with a positioning of the floor installation device (166). 144) is coupled.

35. Floor nozzle according to one of claims 28 to 34, characterized in that the bottom contact device (144) on a support (142) is arranged, which is movable relative to the bottom body (66).

36. Floor nozzle according to claim 35, characterized in that on the support (142) a seal (172) and / or circumferential wall and on the bottom body (66) a circumferential wall (170) and / or seal is arranged, wherein in the Position of the ground engaging device (144) in the hard surface cleaning function (140)

Wall (170) to the seal (172) is pressed.