CN107427173B

CN107427173B - Ground nozzle

Info

Publication number: CN107427173B
Application number: CN201580077390.5A
Authority: CN
Inventors: 朱莉娅·鲍姆加特; 斯特凡·西格尔; 克里斯托夫·赫尔施; 罗格·尼; 梅勒妮·克内德勒
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: 2020-11-13
Anticipated expiration: 2035-03-06
Also published as: WO2016141959A1; EP3264961A1; CN107427173A

Abstract

The invention relates to a floor nozzle for a vacuum cleaner, comprising a base body (66) on which a suction channel (68) with a suction channel wall (72), a suction channel cover (70) and a suction channel chamber (82) is arranged, wherein the suction channel wall (72) rests on the suction channel cover (70), the suction channel chamber (82) is formed between the suction channel wall (72) and the suction channel cover (70), the suction channel (68) is open opposite the suction channel cover (70) and at least one suction opening (86) provided for a fluid connection to a suction device opens into the suction channel chamber (82) on the suction channel cover (70), characterized in that at least one rib (114, 116) is arranged on the suction channel cover (70), which is positioned in the suction channel chamber (82) and has an area (117), the region protrudes from an envelope plane (92) of the end face (90) of the suction channel wall (72) opposite the suction channel cover (70), or the rib lies with an end (118) on the envelope plane (92).

Description

Ground nozzle

Technical Field

The invention relates to a floor nozzle for a vacuum cleaner, comprising a base body, on which a suction channel with a suction channel wall, a suction channel cover and a suction channel chamber is arranged, wherein the suction channel wall is placed on the suction channel cover, the suction channel chamber is formed between the suction channel wall and the suction channel cover, the suction channel is open opposite the suction channel cover, and at least one suction opening provided for a fluid connection to a suction device opens into the suction channel chamber on the suction channel cover.

Background

Several floor nozzles for vacuum cleaners are known, for example, from DE 202009010089U 1, JP 11-2069645, EP 1145676B 1, DE 102007057349B 4 and GB 2471164B.

Disclosure of Invention

The object of the invention is to provide a floor nozzle of the type mentioned at the outset which, with good energy efficiency, enables good cleaning results.

This object is achieved according to the invention in a floor nozzle of the type mentioned at the outset in that at least one rib is arranged on the suction channel cover, which rib is positioned in the suction channel chamber and has a region which protrudes out of the envelope plane of the end side of the suction channel wall which lies opposite the suction channel cover, or which rib rests with an end on the envelope plane.

In the cleaning of textile formations and in particular carpets, floor nozzles are fitted with a base body onto the surface to be cleaned. The end face of the suction channel wall and thus the envelope plane rest on the surface to be cleaned. At least one rib is flush with the end face or protrudes from this end face. The at least one rib can thus rest on the fibers and penetrate into the fibers of the textile form in particular; the at least one rib projecting from the suction channel wall or flush with the suction channel wall then ensures additional combing through of the textile formation. This improves dust absorption.

The at least one rib can be positioned on the suction channel in a simple manner.

Advantageously, 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 the front wall of the floor nozzle. This makes it possible in a simple manner to ensure that the textile fabric is additionally combed through in the fabric-side cleaning function of the floor nozzle.

In an embodiment, the at least one rib is connected with at least one transverse wall of the suction channel wall. A stable construction is thus obtained. Dead zones are avoided in the suction channel where dust can accumulate.

In an embodiment, the at least one rib is configured approximately linearly. It can thus be manufactured in a simple manner. Furthermore, it can be positioned in the suction channel in a simple manner. It does not significantly reduce the area of the suction channel chamber and is responsible for additionally carding through the textile formation. At least one rib may also have a non-linear configuration, such as a chevron shape or a wave or saw-tooth shape.

For the same reason, it is advantageous if the at least one rib is oriented parallel to the front wall of the floor nozzle or at an acute angle of up to 15 ° to the front wall of the floor nozzle. This does not prevent the proper functioning of the suction channel chamber and is responsible here for an additional combing in order to improve the cleaning result.

In an embodiment, the first rib is arranged between the first transverse wall of the suction channel wall and the at least one suction opening and the second rib is arranged between the at least one suction opening and the second transverse wall of the suction channel wall, wherein the first rib and the second rib are oriented in particular aligned with one another. The carding-through of the textile formation can thereby be effected over a large longitudinal area which essentially corresponds to the corresponding length of the suction channel chamber minus the length of the suction opening.

In particular, it is provided that the at least one rib projects beyond the envelope plane at a distance in the range from 0mm to 4mm and in particular at a distance in the range between 0mm and 2 mm. This makes it possible to achieve effective combing of the textile formation. The spacing is the spacing between the tip on the end of at least one rib and the envelope plane. At a spacing of 0mm, this end lies in the envelope plane.

Advantageously, the suction channel wall encloses the suction channel chamber without interruption. Whereby an effective dust absorption can be achieved with a good suction force.

In an embodiment, the suction channel wall comprises a first longitudinal wall, a spaced apart second longitudinal wall, a first transverse wall and a second transverse wall spaced apart from the first transverse wall, wherein the first longitudinal wall and the second longitudinal wall are connected to the first transverse wall and the second transverse wall, respectively. The circumferential suction channel wall can thus be configured with correspondingly good suction results.

The end sides of the first longitudinal wall, the second longitudinal wall, the first transverse wall and the second transverse wall are in particular at least in one plane with respect to the envelope plane. The end face itself may here form an angle with the envelope plane. The suction channel can thus be placed over the entire surface to be cleaned and in particular the fabric surface.

In an embodiment, the suction channel has a rectangular shape on the open side directed towards the face to be cleaned. Good pumping results are thus obtained.

In an embodiment, the suction channel has a width of 50cm on the open side²And 200cm²In the range of between and in particular having an area of 50cm²And 100cm²The area in the range therebetween. This results in an optimization between dust absorption and suction or displacement forces.

Advantageously, the first longitudinal wall and/or the second longitudinal wall of the suction channel wall have end sides oriented at an acute angle with respect to the envelope plane, wherein the acute angle is in a range between 5 ° and 15 °. There are limited suction edge corners on the suction edge of the suction channel. The flat suction edge makes it easier for dirt particles to pass through and increases the suction force by a larger contact surface with the textile fabric. A steeper angle enables the carding through of the fibers of the textile formation, but the suction force and thus the dust absorption are reduced. Dirt particles are more easily removed rather than sucked in due to the steeper angle. An angular orientation in the range between 5 ° and 15 ° may optimize the ratio between suction force and dust absorption.

In particular, the distance on the end side of the first longitudinal wall and/or the second longitudinal wall increases away from the suction channel chamber. An optimization between suction force and dust absorption is thereby obtained.

Advantageously, the suction channel wall is relatively sharp at the suction edge. For this purpose, it is provided that the suction channel wall has an edge radius of at most 2mm, in particular at most 1mm, and in particular at most 0.5mm, on its end face. The suction channel wall can thus penetrate the fibers of the textile formation more easily at its edges. This is responsible for (additional) combing, whereby the dust absorption is improved.

For optimized suction results, it is furthermore advantageous if the depth of the suction channel chamber relative to the open side is varied by a corresponding configuration of the suction channel cover. An optimal flow pattern can thus be constructed.

It is then particularly advantageous if the suction channel chamber has its greatest depth relative to the open side in the region of the at least one suction channel opening and decreases from this region toward the transverse wall.

It is particularly advantageous if the base body has, at least in sections in one or more regions of contact with the surface to be cleaned, an average roughness depth R in the range between 35 μm and 55 μm, at least with respect to the direction of advance of the floor nozzle_Z. The increased roughness depth on the surface of the base body and in particular on the suction channel wall ensures a better dust absorption value which may result from a better combing through of the textile formations.

It is advantageous to provide a slide device with a support surface for the surface to be cleaned, wherein the support surface lies at least approximately in the envelope plane. The suction channel can thus be moved over the surface to be cleaned in the "correct orientation" with respect to the surface to be cleaned. There may be a small, defined offset between the support surface and the envelope plane, which should compensate for the intrusion of the sledge arrangement into the surface to be cleaned.

It is also advantageous if the first tilting axis is spaced apart from the envelope plane by at most 15 mm. The envelope plane is located close to the floor to be cleaned during operation of the floor nozzle and provides good contact.

A connector for a suction tube is provided, wherein a flexible hose is arranged between the connector and the at least one suction opening. The fluid-tight connection can be achieved in a simple manner by means of a flexible tube, which is connected in a sealing manner to a corresponding adapter piece. The flexible hose enables mobility within the floor nozzle via one or more swivel joints without compromising the seal.

In an embodiment, channels are arranged on the front wall of the floor nozzle between the upper side and the lower side. These channels are used to supply air from the upper side to the lower side when the front wall is resting against the wall, in order to optimize the suction result. The channels are formed, for example, by grooves in the front wall or between ribs of the front wall.

In one embodiment, a first tilting joint with a first tilting axis and a second tilting joint with a second tilting axis spaced apart from the first tilting joint are provided, wherein the first tilting axis and the second tilting axis are parallel to each other. A double-turnover joint is arranged. This achieves advantageous movement properties of the floor nozzle over the surface to be cleaned. In both the forward and backward movement of the floor nozzle, clearances are created which ensure that the floor nozzle rests as flat as possible on the surface to be cleaned.

Advantageously, the first tilting axis is arranged in the vicinity of the suction channel, wherein the first tilting axis is at most 10mm from the suction channel, or the first tilting axis is located on the suction channel. This support ensures that the tilting moment is kept low and prevents tilting during forward movements and prevents tilting during backward movements.

The second tilting joint is arranged in particular in the region of the rolling device.

Advantageously, the bottom body has a width in the range between 220mm and 320mm and the floor nozzle has in particular a width in the range between 220mm and 320 mm. In principle, the wider the floor nozzle, the higher the energy efficiency of the floor nozzle, since a larger area is covered with one stroke. The dust absorption is better if the floor nozzle is narrower in the width direction, because the suction power is concentrated on a smaller area. The width range mentioned provides an optimum value for the ratio between dust absorption and energy efficiency.

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

In one embodiment, a stationary movable floor contact device, such as a rubber lip device or a brush device, is provided, which protrudes beyond the suction channel wall in the hard-surface cleaning function, so that the floor contact device can be placed on the surface to be cleaned and the suction channel wall is spaced apart from the surface to be cleaned. The floor nozzle can thus be optimized in the hard-side cleaning function separately from the fabric-side cleaning function.

The ground contact device in particular encloses a region in which at least one suction channel chamber is located. This makes it possible to achieve optimum energy efficiency values and dust absorption values for both the fabric-side cleaning function and the hard-side cleaning function.

It has proven advantageous for the enclosed region to have a depth of 110cm²And 250cm²The area in the range therebetween.

At least one suction opening is positioned in particular in this enclosed region, in order to be able to achieve suction with a simple design of the floor nozzle.

It is particularly advantageous if the ground contact device has at least one recess on one or more lateral surfaces, which at least one recess fluidically connects the exterior space to the enclosed region. In principle, the rubber lip device should provide a sealed area on the (hard) surface to be cleaned. The transverse flow can be provided by at least one recess on the transverse side in order to obtain optimum suction results.

It can also be provided that the front side of the floor contact device comprises through recesses for dirt particles to enter the enclosed area. Thereby improving the cleaning results.

It is particularly advantageous if a support device for the floor nozzle in the hard-surface cleaning function is provided, which support device comprises, in particular, a rolling device, wherein the positioning of the support device is linked to the positioning of the floor contact device. The floor-engaging device therefore does not have to assume the entire supporting function in the hard-surface cleaning function. In this way, for example, softer materials can be used for the ground contact means, and the rubber lip of the ground contact means can then be bent, for example, in order to be able to achieve good adaptability to the ground. A simple manoeuvrability is obtained in that the support means are also brought into their active position when the hard surface cleaning function is "activated".

In an embodiment, the ground engaging means is arranged on a carriage which is movable relative to the base body. The switching device acts on the carrier and brings the carrier into a position corresponding to a fabric surface cleaning function, in which the floor contact device is deactivated, or into a hard surface cleaning function, in which the floor contact device can be placed on the floor surface to be cleaned.

Advantageously, a sealing structure and/or a circumferential wall is arranged on the carrier and a circumferential wall and/or a sealing structure is arranged on the base body, wherein when the floor contact device is positioned in a hard-surface cleaning function. The wall of the vessel presses the sealing structure. The sealing of the bottom body in the housing can thus be achieved for a hard-side cleaning function. This seal is automatically established when the hard-surface cleaning function is switched on. Thereby reducing or preventing leakage that may result in energy loss.

Drawings

The following description of the preferred embodiments is provided to explain the present invention in greater detail in conjunction with the accompanying drawings. In the drawings:

FIG. 1 shows a perspective view of an embodiment of a floor nozzle according to the invention for a vacuum cleaner in a fabric surface cleaning function;

fig. 2 shows a perspective view of the floor nozzle according to fig. 1 from below;

fig. 3 shows a plan view of the floor nozzle according to fig. 1 from below;

FIG. 4 shows a cross-sectional view taken along line 4-4 of FIG. 3;

FIG. 5 shows a cross-sectional view taken along line 5-5 of FIG. 3;

fig. 6(a) shows an enlarged partial view in the view according to fig. 5;

FIG. 6(b) shows an enlarged view of region X according to FIG. 6 (a);

FIG. 7 shows a cross-sectional view taken along line 7-7 of FIG. 3;

FIG. 8 shows the same view as FIG. 1 with the floor engaging means removed in a hard surface cleaning function;

FIG. 9 shows a cross-sectional view along line 4-4 of FIG. 3 in a hard-side cleaning function; and

FIG. 10 shows a cross-sectional view along line 5-5 of FIG. 3 in a hard-side cleaning function.

Detailed Description

The exemplary embodiment of a floor nozzle shown in fig. 1 to 10 and designated therein by reference numeral 10 comprises a housing 12. The housing 12 has a front wall 14, a rear wall 16 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. In addition, a second side wall 20 is connected to the front wall 14 and the rear wall 16. The housing 12 furthermore has a housing cover 22. The housing cover 22 defines an upper side 24 of the housing 12.

The housing 12 has a lower side 26 (fig. 2, 3) opposite the upper side 24.

A housing interior chamber 28 is formed between the front wall 14, the rear wall 16, the first side wall 18, the second side wall 20, and the housing cover 22. This housing interior 28 is covered laterally by the

side walls

18, 20, forwardly by the front wall 14, rearwardly by the rear wall 16 and upwardly by the housing cover 22.

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

A connector 30 for a suction pipe is placed on the housing 12. A suction tube can be inserted into this connection 30 and can thus establish a fluid-operated connection with the suction device of the vacuum cleaner. The floor nozzle 10 can also be mechanically fixed to the corresponding suction pipe by means of the adapter 30.

In the exemplary embodiment, a rolling device 32 is arranged on the housing 12 outside the housing 12 in the region of the rear wall 16. The rolling means 32 comprise one or more rollers by which the floor nozzle 10 can be supported on the floor. The roller or rollers of the rolling device 32 can rotate about an axis 34. Axis 34 is oriented parallel to front wall 14.

On the support 36 for the roller or rollers of the rolling device 32, a web 38 is placed, on which the joint 30 is in turn placed. The joint 30 here comprises a joint body 40 in which a recess 42 is formed. The recess 42 is cylindrical. The suction tube can be inserted and can be fixed in the recess.

The recess 42 is formed, for example, in a tube 44 seated on the fitting body 40.

A flexible tube 46 is connected to the tube 44, which leads from the tube 44 into the housing interior 28 to an opening 88.

In the exemplary embodiment, the connector body 40 has a side 48 which is designed in such a way that the housing of the vacuum cleaner on which the suction tube is positioned outside the housing can be placed in a specific position and in particular in a rest position. The side 48 forms an abutment surface for the housing of the vacuum cleaner.

In the exemplary embodiment, the carrier 36 for the rolling means 32 is fixedly connected to the housing 12, wherein the carrier is connected to the housing 12 on the rear wall 16 thereof, in particular via a web 50 (fig. 2).

Also configured on the support 36 is a roll-over joint 52, which is referred to herein as a second roll-over joint. This second tilting joint 52 is formed, for example, in such a way that the bracket 36 has a cylindrical region 54 on which an element 56 is pivotably mounted, on which the web 38 is in turn fastened. The element 56 is guided in an orbital manner on this cylindrical region 54.

The axis of the cylindrical region 54 coincides with the axis 34 of the rolling device 32 for the rotational movement of the roller or rollers. A second overturning axis 58 is correspondingly formed, coinciding with axis 34.

A plurality of spaced apart channels 60 are disposed in the front wall 14 of the housing 12 and extend between the upper side 24 and the lower side 26. The channel 60 forms a flow channel. They are formed, for example, by grooves in the front wall 14.

When the floor nozzle 10 is moved towards the wall with the front wall 14, then air may flow from the upper side 24 through the channel 60 to the lower side 26. It is thereby possible to provide a sufficient suction flow in order to obtain good suction results near the wall even when the floor nozzle 10 is in contact with its front wall 14 on the (room) wall.

Channel 60 is oriented vertically, in particular, with respect to a lower edge 62 of front wall 14 on lower side 26.

When the floor nozzle 10 is used, a propulsion direction 64 (fig. 1) is provided, 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 in the range between 220mm and 320 mm. In an embodiment, the width B is 260 mm.

In principle, the greater the width B of the floor nozzle, the greater the energy efficiency for pumping with the floor nozzle 10, since a greater area is covered with one stroke. On the other hand, the smaller this width B, the better the dust absorption by the floor nozzle 10 during suction operation, since the suction power can be concentrated on a correspondingly smaller area.

A good ratio between dust absorption and energy efficiency (whether with respect to the fabric-side cleaning function or the hard-side cleaning function) is obtained by the above-mentioned range for the width B.

A base body 66, in particular a plate-like body, is arranged in the housing interior 28. The bottom body 66 is here arranged fixedly in the housing interior 28 (wherein the bottom body can be designed in multiple parts with mutually movable parts).

The base body is positioned spaced from front wall 14 and first and

second side walls

18 and 20.

A suction passage 68 is formed in the bottom body 66. The suction channel 68 has a suction channel cover 70, which is formed in particular by the base body 66. The suction channel 68 furthermore has a suction channel wall 72. The suction channel wall is, for example, arranged in one piece on the suction channel cover 70 and protrudes therefrom.

In an embodiment, the suction channel wall 72 includes a first longitudinal wall 74. The first longitudinal wall 74 is spaced from the front wall 14 of the housing 12 and is oriented at least approximately parallel to this front wall 14.

Furthermore, the suction channel wall 72 comprises a second longitudinal wall 76 which is parallel to the first longitudinal wall 74 and spaced apart from this latter.

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

The first and second

longitudinal walls

74, 76 are transverse and, in particular, perpendicular to the

side walls

18, 20.

The first and second

longitudinal walls

74, 76 are connected to first and second

transverse walls

78, 80, respectively. The first transverse wall 78 is adjacent to the second side wall 20 of the housing 12, but spaced therefrom. The second transverse wall 80 is spaced from the first side wall 18 of the housing 12, but is spaced from this first side wall. The first transverse wall 78 and the second transverse wall 80 are in particular oriented parallel to the first side wall 18 or the second side wall 20.

In an embodiment, the first and second

transverse walls

78, 80 are at least approximately perpendicular to the first and second

longitudinal walls

74, 76. The area enclosed by the suction channel wall 72 then has a rectangular shape.

The suction channel 68 has a suction channel chamber 82 between the suction channel cover 70 and the suction channel wall 72. The suction channel wall 72 surrounds the suction channel chamber 82 without interruption, i.e., laterally encloses this suction channel chamber.

The suction passage chamber 82 is open at the lower side of the housing 12. When the floor nozzle 10 is positioned in a defined manner opposite the surface to be cleaned with the underside 26 facing the surface to be cleaned, the suction channel chamber is open via the open side 84 with respect to the surface to be cleaned.

A suction opening 86 is arranged in the central region of the suction channel chamber 82. In particular, the flexible tube 46 is connected to a port 88, on which the suction opening 86 is formed.

When the floor nozzle 10 is connected to a vacuum cleaner and the vacuum cleaner generates a corresponding suction flow by means of the suction device, then this suction flow is located at the suction opening 86. The suction opening 86 is configured in such a way that the opening piece 88 does not project into the suction channel chamber 82. The respective end face of the opening piece 88 is set back or at most flush with the suction channel cover 70.

The suction channel wall 72 has an end side 90. An 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 (fig. 5, 6 (a)).

The suction channel 68 has a larger cross-sectional area on the open side 84 than the suction opening 86. The suction channel 68 provides a larger suction area on the surface to be cleaned than the suction opening 86.

The floor nozzle 10 includes a sled assembly 94. A slide plate arrangement 94 is arranged on the bottom body 66 outside the suction channel 68. The slide plate device 94 has a support surface 96, which is a sliding surface and by means of which the floor nozzle 10 can be supported on the surface to be cleaned during operation with the fabric surface cleaning function.

The support surface 96 rests on the envelope plane 92 or may be provided with a defined small offset. This offset serves to compensate for the sinking of the support surface 96 into the fabric material.

Furthermore, the support surface 98 of the rolling device 32 may lie on the envelope plane 92 on the basis of the second tilting joint 52.

The bearing surface 96 of the slide plate arrangement 94 is in particular adjacent to the bearing surface 98 of the rolling arrangement 32.

The end face 90 of the suction channel wall 72 lies on the envelope plane 92. The end side 90 itself is in the embodiment configured not to be parallel to the envelope plane 92, but to be at an angle to this envelope plane (fig. 6(a) and 6 (b)). The end side 90a of the first longitudinal wall 74 is at an acute angle 100 to the envelope plane 92. The end face 90a is in particular formed flat here. The acute angle is in the range of 5 ° to 15 °.

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

The distance of the end face 90 from the envelope plane 92 widens here away from the suction channel 68 towards the front wall 14.

The second longitudinal wall 76 accordingly has an end face 90b which is oriented at an angle to the envelope plane 92 and in particular at an acute angle 102. This acute angle 102 is likewise in the range between 5 ° and 15 ° and is in particular approximately 9 °. The distance of the end face 90b of the second longitudinal wall 76 from the envelope plane 92 widens here away from the suction channel 68 towards the rear wall 16.

The

acute angles

100, 102 form suction corners on the suction channel wall 72.

The

acute angles

100, 102 are adjusted in such a way that a good ratio is formed between the suction force of the base body 66 onto the surface to be cleaned and the dust absorption during the fabric-surface cleaning function. In principle, the

straight corners

100, 102 are easier for dirt particles to pass through, and the suction force is increased due to the greater contact surface with the surface to be cleaned. The steeper

acute angles

100, 102 enable a combing through of the fibers of the fabric side to be cleaned, but reduce the suction force and thus the dust absorption. Dirt particles are more easily removed rather than sucked in due to the steeper angle.

It has been shown that the optimum ratio with respect to suction force and dust absorption is set by the

acute angles

100, 102 in the mentioned range between 5 ° and 15 °.

The edge 104 of the suction channel wall 72 opposite the suction channel chamber 82 is designed as sharp as possible. In this way, the suction channel 68 is sealed in the fabric-side cleaning function by the suction channel wall 72 being able to penetrate the textile fabric in a flat manner. Good sinkability into the fibers of the textile formation is achieved. This supports the combing through of textile formations, such as carpets, in order to improve dust absorption.

The radius R of the inscribed circle 106 on the edge 104 serves as a criterion for the sharpness of the respective edge 104 (fig. 6 (b)). This radius is in the range between 0mm and 2 mm. The ideal edge is obtained with a radius of 0 mm.

In an embodiment, this radius R is 0.3 mm.

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

The transverse width perpendicular thereto is for example 32 mm.

The area of the suction channel 68 on the open side 84 is 60cm²And 200cm²Within the range of (a).

In the example, this area is 77cm²。

The suction channel chamber 82 has a varying depth perpendicular to the open side 84 with respect to a width direction 108 (see fig. 2). This varying depth is provided by a corresponding configuration of the suction channel cover 70 (see also fig. 4).

In this direction 110 (depth direction), the width of the suction channel chamber 82 decreases from the suction opening 86 towards the first transverse wall 78 or the second transverse wall 80. In the region of the suction opening 86, the suction channel chamber has its greatest depth in the depth direction 110. On the first transverse wall 78 and the second transverse wall 80, the suction channel chamber has its smallest depth, but wherein the depth on the first transverse wall 78 and the second transverse wall 80 is limited (that is to say greater than zero). The depth is for example in the range between 1mm and 10 mm.

In a cross-section (see fig. 4) that includes a width direction 108 and a depth direction 110, the pumping channel chamber 82 has a trapezoidal profile. The suction passage chamber 82 becomes more flat toward the lateral direction. Good dust absorption is thereby achieved.

A rib structure 112 is arranged on the suction channel 68. The rib structure 112 serves for additionally combing through textile formations, such as carpets, in the textile-side cleaning function of the floor nozzle 10.

In an 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 respectively configured in a tab shape. The first rib 114 and the second rib 116 are arranged on the suction channel cover 70 at a distance from the first longitudinal wall 74 and at a distance from the second longitudinal wall 76.

The first and second ribs extend through the suction channel chamber 82 towards the open side 84 and project over the open side 84 over a distance a from the suction channel wall 72 in a region 117 (fig. 5, 6 (a)). The outer ends 118 of the first ribs 114 and the second ribs 116 are spaced apart from the envelope plane 92 by the distance a and are located outside the suction channel chamber 82. The region 117 is between the envelope plane 92 and the end 118.

When the floor nozzle 10 is placed with the end face 90 of the suction channel wall 72 against the surface to be cleaned, the first rib 114 and the second rib 116 penetrate into the surface to be cleaned on the basis of the distance a, in order to enable combing.

The spacing A is at most 4 mm. In an embodiment, the spacing A is 1 mm.

The outer end 118 may also lie in the envelope plane 92. The spacing A is then zero; thus, there is no region 117. In this case, an additional combing through of the textile formation is also achieved.

The first rib 114 and the second rib 116 are closer to the first longitudinal wall 74 than the second longitudinal wall 76 in embodiments (wherein the first longitudinal wall 74 is 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 configured in the shape of tabs and are arranged parallel to the first longitudinal wall 74 in the embodiment. The first rib 114 and the second rib 116 have a width perpendicular to the width direction 108 that is significantly smaller than their length in the width direction 108, in order to form a tab shape.

The first rib 114 extends between the suction opening 86 and the first transverse wall 78. The first rib does not extend into the suction port 86. A second rib 116 extends between the suction opening 86 and the second transverse wall 80, wherein the second rib does not project into this suction opening.

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

The first rib 114 and the second rib 116 have varying heights in the depth direction 110 that follow the varying heights of the suction channel chamber 82.

In an exemplary embodiment, the distance a of the ends 118 of the first ribs 114 and the second ribs 116 from the envelope plane 92 in the width direction 108 is constant, wherein the distance may also be zero.

It may also be provided that this distance a varies in the width direction 108 along the first rib 114 or the second rib 116.

The rib structure 112 protrudes beyond the edge 104 of the suction channel wall 72 in order to be able to penetrate into the textile formation of the surface to be cleaned.

The surface 120 of the material of the bottom body 66 has a defined adjusted mean roughness depth R where it can contact the surface to be cleaned_ZThe depth of the asperity being relative to parallel or anti-parallel to the thrustThe direction of movement of direction 64 is in the range between 35 μm and 55 μm. The surface of the suction channel wall 72 has in particular such an average roughness depth R_Z。

By such an increased roughness depth R_ZDust absorption is improved. This may be due to a more refined combing through of the textile fibre formation.

The floor nozzle 10 includes another flip joint 122, which is referred to herein as a first flip joint. The first flipping joint 122 has a first flipping axis 124 (see, e.g., fig. 4 and 5). The first flipping axis 124 is parallel to the second flipping axis 58.

The first tilting joint 122 is arranged in such a way that the first tilting axis 124 lies on the suction channel 68, that is to say that the first tilting axis 124, which is oriented parallel to the width direction 108, extends through the suction channel wall 72.

In an alternative embodiment, the first tilting joint 122 is arranged in such a way that the first tilting axis 124 is at most spaced apart from the suction channel 68 by a distance of 10mm or less.

Furthermore, the first tilting joint 122 is arranged "deep" such that the first tilting axis 124 is at most 15mm apart from the envelope plane 92.

To construct the first flip joint 122, the floor nozzle 10 includes a first portion 126 and a second portion 128 (see fig. 7). The second portion 128 is reversibly coupled to the first portion 126 via the first reversible joint 122. On the second portion 128 is placed the suction channel 68 with the suction opening 86. On the first part 126, the rolling device 32 and the second tilting joint 58 are arranged. A free space 130 is formed between the first part 126 and the second part 128, which free space enables the invertability of the second part 128 relative to the first part 126.

The second part 128 is held on the first part 126 by a bow arrangement 129 with a wire bow 131. Hose 46 connects first portion 126 with second portion 128.

On the bow means 129, a first tilting joint 122 with a tilting axis 124 is arranged or formed on the second part 128.

The flexible tube 46, with the connection to the connection 30 and the access piece 80, enables a tilting about the tilting axis 124.

With respect to a height direction 132 (see fig. 6(a)) perpendicular to the width direction 108, the first flip joint 122 is located at a deeper position about its first flip axis 124 than the second flip joint 52 about its second flip axis 58.

The floor nozzle 10 has a double flip joint by the first flip joint 122 and the second flip joint 52. This results in advantageous movement characteristics, in particular during the cleaning process on the textile formation. The double swivel joint configuration does not allow a large free space during the forward movement of the floor nozzle 10 in the advancing direction 64 and during the backward movement in the direction opposite to the advancing direction 64, by which free space it can be ensured that the suction channel wall 72 rests as flat as possible on the surface to be cleaned.

By virtue of the "low" position of the first tilting joint 122 relative to the first tilting axis 124, the tilting moment is kept low there and forward tilting can be avoided in the forward movement in the advancing direction 64 and lifting of the floor nozzle 10 in the backward movement opposite to the advancing direction 64.

The orientation of the force vector in the forward motion in the propulsion direction 64 is schematically depicted in fig. 6 (a). This force vector is designated by reference numeral 134. Forward tipping is avoided by arranging the first tipping joint 122 as described.

Fig. 6(a) also shows the force vector which is present at the first tilting joint 122 in the backward movement against the advancing direction 64. This force vector is designated by reference numeral 136.

The lifting of the floor nozzle 10 is avoided by the construction and arrangement of the tilting joint 122.

The described forces occur when the floor nozzle 10 held on the suction tube is moved in or opposite to the advance direction 64 by pulling at the handle of the respective vacuum cleaner or by pulling at the suction tube during cleaning.

The floor nozzle 10 has, as explained above, a fabric surface cleaning function, by means of which in particular a carpet surface can be cleaned. In the fabric surface cleaning function, the floor nozzle 10 rests with the base body 66 and here with the end face 90 of the suction channel wall 72 on the surface to be cleaned. The envelope plane 92 is parallel to the face to be cleaned and coincides with the upper side of the face to be cleaned. The support surface 96 of the sled means 94 is supported on the surface to be cleaned.

The rib structure 112 intrudes into the face to be cleaned. In fig. 1 to 6, the floor nozzle 10 is in its fabric surface cleaning function 138.

The suction channel 68 rests with the suction channel wall 72 on the entire surface of the surface to be cleaned. The suction channel wall 72 completely surrounds the suction channel chamber 82 without interruption. The suction channel wall 72 surrounds the suction channel chamber 82 without interruption. Whereby an efficient dust absorption is obtained.

The suction channel 68 is optimized in its geometric dimensions and in particular in its width in the width direction 108, namely in such a way that a good dust absorption value is obtained by a good suction on the surface to be cleaned and by a corresponding combing through of the textile formation with a sufficiently large surface for a good suction force and a good displacement force, in order to achieve a high dust absorption with good combability of the textile formation.

The rib structure 112 enables sinking into the textile formation and additional combing in order to increase dust absorption.

The

acute angles

100, 102 on the end face 90 of the suction channel wall 72 enable a good ratio between the suction force and the dust absorption of the base body 66 onto the surface to be cleaned.

The more pointed edge configuration of the suction channel wall 72, in particular on the first longitudinal wall 74 and the second longitudinal wall 76, on the edge 104, facilitates a fluid-tight seal on the surface to be cleaned and enables a convenient penetration into the fibers of the textile formation of the surface to be cleaned. Thereby supporting combing and improving dust absorption.

The configuration of the suction channel chamber 82 with a depth that varies in the depth direction 110 enables an optimized lateral flow towards the suction opening 86.

On the base body 66, the roughened surface 120, at least on the end face 90 of the suction channel wall 72, may improve the dust absorption on account of the finer combing of the textile formation of the surface to be cleaned.

The double-pivot joint configuration 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. The tilting moment during the forward movement of the floor nozzle 10 in the propulsion direction 64 is kept small and the lifting risk during the movement in the opposite direction to the propulsion direction 64 is avoided.

The carriage device 94 is provided with its support surface 96, which is responsible for preventing tilting and by means of which the surface to be cleaned can be supported. This ensures that the floor nozzle 10 and therefore also the suction channel 68 are guided in the "correct" orientation for dust absorption above the surface to be cleaned.

The rib structure 112 is described above with the aid of the first rib 114 and the second rib 116. The rib structure can also be configured differently than this and, for example, only one rib or more than two ribs can be provided. It is also possible to arrange ribs of different heights in the suction channel 68.

The channel 60 on the front wall 14 is responsible for the area in which air can be supplied from the upper side 24 to the suction channel 68 in order to create a suction flow when the front wall 14 is in contact with the wall.

The floor nozzle 10 also has a hard-surface cleaning function 140 (fig. 8 to 10).

Disposed in the housing 12 is a bracket 142 that holds a ground engaging device 144, such as a rubber lip device or a brush device. The bracket 142 is movable relative to the base body 66.

The bracket 142 is connected via a switching device 146 to 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 on the one hand a switch position in which the floor nozzle is in the fabric surface cleaning function 138 and another switch position in which the floor nozzle 10 is in the hard surface cleaning function 140. In the hard-surface cleaning function 140, the floor engaging means 144 can contact the surface to be cleaned. In the fabric surface cleaning function 138, the floor contact device 144 is retracted in such a way that it does not act on the surface to be cleaned and the suction channel wall 72 can be placed with its end face 90 on the surface to be cleaned.

The carriage can be brought by the switching device 146 into a position in which the ground contact device 144 is not active (fig. 1 to 7) and into a further position in which the ground contact device is active (fig. 8 to 10).

The ground engaging device 144 has a first longitudinal wall 150. The first longitudinal wall 150 is made of a corresponding elastic material ("rubber material") in the rubber lip device. It is positioned between the front wall 14 of the casing 12 and the front side of the bottom body 66, which is closest to the first longitudinal wall 74 of the suction channel 68. Furthermore, the ground contact device has a second longitudinal wall 152, which is spaced apart from the first longitudinal wall 150. The second longitudinal wall 152, also made of rubber material, is oriented parallel to the first longitudinal wall 150 (see for example fig. 10).

Furthermore, the ground 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. A second transverse wall 156 spaced from the first transverse wall 154 is also connected to the first and second longitudinal walls 150 and 152 (see, e.g., fig. 3).

The wall of the floor abutment 144 with the first longitudinal wall 150, the second longitudinal wall 152, the first transverse wall 154 and the second transverse wall 156 encloses an area 158 in the hard-surface cleaning function 140. The enclosed region surrounds the suction channel 68, i.e. the suction channel chamber 82 is located in the enclosed region. In the hard-surface cleaning function 140, the envelope plane 92 is spaced apart from the lower end 160 of the wall of the floor contact device 144, i.e. the end face 90 of the suction channel wall 72 does not contact the surface to be cleaned.

The first transverse wall 154 is disposed between the base body 66 and the first transverse wall 78 of the housing 12. The second transverse wall 156 of the ground engaging means 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 portion 126 and the second portion 128.

The surface of the enclosed region 158 is designed in such a way that good dust absorption is achieved with good suction force.

The enclosed region 158 has a depth of 110cm²And 250cm²Area within the range of (1). In an embodiment, the area of the enclosed area is 166cm². The first and second

longitudinal walls

150, 152 are 248mm in length and the first and second

transverse walls

154, 156 are 67mm in length.

In one exemplary embodiment, the ground contact device 144 has one or more recesses 162 (see, for example, fig. 2) on the first transverse wall 154 and the second transverse wall 156, respectively, for the fluid-operated connection of the exterior space to the enclosed region 158.

In the hard side cleaning function 140 of the floor nozzle 10, a cross flow can be generated by these recesses 162, which improves the suction result.

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

It can also be provided that the first longitudinal wall 150 has recesses 164 towards its end 160 (see fig. 8). When the floor contact device is placed on the surface of a hard floor to be cleaned, the floor contact device 144 is basically responsible for sealing in order to achieve good suction results. The recess 162 is responsible for configuring the cross flow.

The recess 164 enables dirt particles to enter the enclosed region 158 for suction.

Fig. 8 to 10 show the floor nozzle 10 after the switching process from the fabric surface cleaning function 138 to the hard surface cleaning function 140 has ended. The conversion is accomplished by movement of the carriage 142 and then fixing the carriage position in either the hard side cleaning function 140 or the fabric side cleaning function 138.

By switching over from the fabric surface cleaning function 138 to the hard surface cleaning function 140 via the switching device 146, the floor contact device 144 is brought from the retracted position into the active position, in which the suction channel 68 is deactivated.

The end 160 of the floor engaging means 144 can then be placed over the surface to be cleaned.

The floor nozzle 10 is provided with a number of support elements 166 which form support means for supporting the floor nozzle 10 on the surface to be cleaned in the hard-surface cleaning function 140. The support element 166 is configured, for example, as a roller.

In an embodiment, the respective support element 166 is arranged at a corner of a triangle, the apex of which is directed towards the rolling means 32.

The support member 166 is disposed on the bracket 142. In the fabric surface cleaning function 138, these support elements are not effective, that is, they do not have a supporting function.

The support element 166 is coupled to the transition device 146. The base bodies 66 each have a recess 168 associated with the support element 166. In the transition, the support element 166 moves with the floor abutment 144 and further projects from the recess 168 to enable contact with the surface to be cleaned.

Correspondingly, retraction of the support element 166 is effected with retraction of the floor abutment 144 when switching from the hard side cleaning function 140 to the fabric side cleaning function 138.

A wall 170 is disposed on the bottom body 66 toward the bracket 142 (see, e.g., fig. 4 or fig. 9, 10). The wall 170 is circumferential and defines an area on the back side of the bottom body 66 facing away from the enclosed area 158.

A likewise circumferential sealing structure 172 is associated with the carrier 142 toward the wall.

In the hard side cleaning function 140 with the corresponding position of the bracket 142, the wall 170 compresses the sealing structure 172. This results in the bottom body 66 being fluid-tight in the housing 12 in the hard-side cleaning function 140, to prevent secondary air from entering.

The walls 170 may also be correspondingly disposed on the bracket 142 and the sealing structure 172 may be disposed on the bottom body 66.

Leakage and thus energy loss is reduced or prevented by the combination of the wall 170 and the sealing structure 172.

In the hard-side cleaning function 140 of the floor nozzle 10, this floor nozzle operates in the following manner:

through the switch 146 and into the hard-facing cleaning function 140. For this purpose, the floor support 144 is moved out by the bracket 142 and, in the example of a rubber lip arrangement as floor support 144, the rubber material of the rubber lip arrangement on the first longitudinal wall 150, the second longitudinal wall 152, the first transverse wall 154 and the second transverse wall 156 is placed on the surface to be cleaned.

The base body 66 is then spaced apart from the surface to be cleaned, i.e. the end face 90 of the suction channel wall 70 does not touch the surface to be cleaned.

Thereby providing an enclosed region 158 that forms a gettering space.

The surrounding wall of the ground contact device 144 ensures a good seal against hard surfaces.

The recess 162 is responsible for a sufficiently strong lateral flow.

The recess 164 allows dirt particles to pass through the enclosed space 158.

The area of the enclosed region 158 is designed in such a way that there is a good coordination between the suction force and the dust absorption.

The combination of the wall 170 and the sealing structure 172 is responsible for preventing leakage during the transition from the fabric cleaning function 138 to the hard side cleaning function 140.

The support element 166 is responsible for the hard-surface cleaning function 140 in that the floor nozzle 10 does not have to be supported solely by the material of the floor abutment 144. The material of the floor contact means 144 can then be selected to be soft and in particular selected in such a way that the respective lip (formed by the

walls

150, 152, 154, 156) can be bent and adapted to the surface to be cleaned.

In the exemplary embodiment, the floor contact device 144 is dimensioned in such a way that, in the hard-surface cleaning function 140, the end face 90 of the suction channel wall 72 has a distance of approximately 5mm from the floor surface to be cleaned when the end 166 is on the surface to be cleaned.

In the case of the rubber lip device being made of rubber material, the thickness of the

walls

150, 152, 154, 156, i.e. of the ground contact device 144, is for example in the range between 0.5mm and 2 mm.

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

List of reference numerals

10 floor nozzle

12 casing

14 front wall

16 rear wall

18 first side wall

20 second side wall

22 casing cover

24 upper side

26 underside

28 housing inner chamber

30 joint

32 rolling device

34 axis of rotation

36 support

38 tab

40 connecting body

42 recess

44 pipe fitting

46 flexible pipe

48 side surface

50 connecting piece

52 second flip joint

54 column-shaped region

56 element

58 second flip axis

60 edge

62 lower edge

64 direction of propulsion

66 bottom body

68 suction channel

70 suction channel cover

72 suction channel wall

74 first longitudinal wall

76 second longitudinal wall

78 first transverse wall

80 second transverse wall

82 suction channel chamber

84 open side

86 suction port

88 lead-in piece

90. 90a, 90b end sides

92 envelope plane

94 slide plate device

96 bearing surface

98 bearing surface

100 acute angle

102 acute angle

104 edge

106 round

108 width direction

110 direction of depth

112 rib structure

114 first rib

116 second rib

117 region

118 end portion

120 surface

122 first flip joint

124 first flip axis

126 first part

128 second part

129 bow device

130 free space

131 wire bow

132 height direction

134 force vector (forward motion)

136 vector (backward movement)

138 cleaning function of fabric surface

140 hard surface cleaning function

142 bracket

144 ground surface abutting 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 end portion

162 recess

164 recess

166 support element

168 recess

170 wall

172 sealing structure

Claims

1. Floor nozzle for a vacuum cleaner, comprising a base body (66) on which a suction channel (68) with a suction channel wall (72), a suction channel cover (70) and a suction channel chamber (82) is arranged, wherein the suction channel wall (72) is located on the suction channel cover (70), wherein the suction channel chamber (82) is formed between the suction channel wall (72) and the suction channel cover (70), wherein the suction channel (68) opens out on the suction channel cover (70) into the suction channel chamber (82) at least one suction opening (86) which is open opposite the suction channel cover (70) and is intended for a fluid-tight connection with a suction device, characterized in that on the suction channel cover (70) at least one rib (114, 116) is arranged which is positioned in the suction channel chamber (82) and has an area (117), said region protruding from an envelope plane (92) of the end face (90) of the suction channel wall (72) opposite the suction channel cover (70), or the rib is located with an end (118) on the envelope plane (92),

the first longitudinal wall (74) and/or the second longitudinal wall (76) of the suction channel wall (72) have end sides (90 a; 90b) oriented at an acute angle (100; 102) with respect to the envelope plane (92), wherein the acute angle (100; 102) lies in a range between 5 DEG and 15 deg.

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 the front wall (14) of the floor nozzle.

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

4. Floor nozzle according to claim 1 or 2, characterized in that the at least one rib (114, 116) is constructed at least approximately linearly.

5. The floor nozzle according to claim 1 or 2, characterized in that the at least one rib (114, 116) is oriented parallel to the front wall (14) of the floor nozzle or at an acute angle of at most 15 ° to the front wall of the floor nozzle.

6. Floor nozzle according to any of claims 1-2, characterized in that the first rib (114) is arranged between the first transverse wall (78) of the suction channel wall (72) and the at least one suction opening (86) and the second rib (116) is arranged between the at least one suction opening (86) and the second transverse wall (80) of the suction channel wall (72).

7. Floor nozzle according to any of claims 1-2, characterized in that the end (118) of the at least one rib (114) protrudes out of the envelope plane (92) with a spacing (a) in the range of 0mm to 4 mm.

8. Floor nozzle according to claim 1 or 2, characterized in that the suction channel wall (72) encloses the suction channel chamber (82) without interruption.

9. Floor nozzle according to claim 1 or 2, characterized in that the suction channel wall (72) has a first longitudinal wall (74), a spaced-apart second longitudinal wall (76), a first transverse wall (78) and a second transverse wall (80) spaced-apart from the first transverse wall (78), wherein the first longitudinal wall (74) and the second longitudinal wall (76) are connected to the first transverse wall (78) and the second transverse wall (80), respectively.

10. Floor nozzle according to claim 9, characterized in that the end sides (90) of the first longitudinal wall (74), of the second longitudinal wall (76), of the first transverse wall (78) and of the second transverse wall (80) are in one plane at least with respect to the envelope plane (92).

11. Floor nozzle according to claim 1 or 2, characterized in that the suction channel chamber (82) has a rectangular shape (84) on the open side.

12. Floor nozzle according to claim 1 or 2, characterized in that the suction channel (68) has a width of 50cm on the open side (84)²And 200cm²The area in the range therebetween.

13. A floor nozzle according to claim 6, characterized in that the first rib (114) and the second rib (116) are oriented in alignment with each other.

14. Floor nozzle according to claim 1, characterized in that the spacing on the end side (90 a; 90b) of the first longitudinal wall (74) and/or the second longitudinal wall (76) increases away from the suction channel chamber (82).

15. Floor nozzle according to any of claims 1-2, characterized in that the suction channel wall (72) has an edge radius (R) of at most 2mm on its end side (90).

16. Floor nozzle according to claim 1 or 2, characterized in that the depth of the suction channel chamber (82) relative to the open side (84) is varied by a corresponding configuration of the suction channel cover (70).

17. Floor nozzle according to claim 16, characterized in that the suction channel chamber (82) has its greatest depth relative to the open side (84) in the region of at least one suction channel opening (86) and from this region the depth decreases towards the transverse wall (78; 80).

18. Floor nozzle according to claim 1 or 2, characterized in that the bottom body (66) has a propulsion direction (64) of 35 at least in relation to the floor nozzle at least partly in one or more areas of contact with the surface to be cleanedAverage roughness depth R in the range between μm and 55 μm_Z。

19. Floor nozzle according to claim 1 or 2, characterized by a slide plate arrangement (94) having a support surface (96) for the surface to be cleaned, wherein the support surface (96) lies at least approximately in the envelope plane (92).

20. Floor nozzle according to claim 1 or 2, characterized by a connector (30) for a suction tube, wherein a flexible hose (46) is arranged between the connector (30) and the at least one suction opening (86).

21. Floor nozzle according to claim 1 or 2, characterized in that spaced channels (60) are arranged on the front wall (14) extending from the upper side (24) of the floor nozzle to the lower side (26) of the floor nozzle.

22. Floor nozzle according to claim 1 or 2, characterized by a first tilting joint (122) with a first tilting axis (124) and a second tilting joint (52) spaced apart from the first tilting joint (122) 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) is arranged in the vicinity of the suction channel (68), wherein the first tilting axis (124) is spaced from the suction channel (68) by at most 10mm, or the first tilting axis (124) is at the suction channel (68).

24. A floor nozzle according to claim 22, wherein the first swivel axis (124) is spaced from the envelope plane (92) by at most 15 mm.

25. Floor nozzle according to claim 22, characterized in that the second tilting joint (52) is arranged in the region of the rolling device (32).

26. Floor nozzle according to claim 1 or 2, characterized in that the bottom body (66) or floor nozzle has a width (B) in the range between 220mm and 320 mm.

27. Floor nozzle according to claim 1 or 2, characterized by a switching device (146), by means of which switching between a fabric surface cleaning function (138) and a hard surface cleaning function (140) is possible, wherein in the fabric surface cleaning function (138) the suction channel wall (72) can be placed with its end side (90) on the surface to be cleaned.

28. A floor nozzle according to claim 27, characterized by a fixedly movable floor abutment (144), which in the hard-surface cleaning function (140) protrudes from the suction channel wall (72), so that the floor abutment (144) can be placed on the surface to be cleaned with the suction channel wall (72) spaced apart from the surface to be cleaned.

29. A floor nozzle according to claim 28, characterized in that the floor abutment means (144) encloses an area in which the at least one suction channel chamber (82) is located.

30. A floor nozzle according to claim 29, characterised in that the enclosed area (158) has a width of 110cm²And 250cm²The area in the range therebetween.

31. A floor nozzle according to claim 29, characterised in that at least one suction opening (86) is positioned in the enclosed area (158).

32. A floor nozzle according to claim 29, characterized in that the floor abutment (144) has at least one recess (162) on one or more lateral sides, which fluidly connects the outer space with the enclosed area (158).

33. A floor nozzle according to claim 29, characterized in that the front side of the floor abutment means (144) comprises a through recess (164) for letting through dirt particles into the enclosed area (158).

34. A floor nozzle according to claim 29, characterized by a support device (166) for the floor nozzle in a hard-surface cleaning function (140), wherein the positioning of the support device (166) is linked to the positioning of the floor abutment (144).

35. Floor nozzle according to claim 28, characterized in that the floor abutment means (144) are arranged on a carriage (142) which is movable relative to the bottom body (66).

36. A floor nozzle according to claim 35, wherein a sealing structure (172) and/or a surrounding wall is arranged on the bracket (142) and a surrounding wall (170) and/or a sealing structure is arranged on the bottom body (66), wherein the wall (170) presses the sealing structure (172) when the floor abutment (144) is positioned in the hard-sided cleaning function (140).

37. A floor nozzle according to any of claims 1-2, characterized in that the end (118) of the at least one rib (114) protrudes out of the envelope plane (92) with a spacing in the range between 0mm and 2 mm.

38. Floor nozzle according to any of claims 1-2, characterized in that the suction channel wall (72) has an edge radius (R) of at most 1mm on its end face (90).

39. Floor nozzle according to any of claims 1-2, characterized in that the suction channel wall (72) has an edge radius (R) of at most 0.5mm on its end side (90).

40. A floor nozzle according to claim 34, wherein said support means comprises rolling means.