WO2017041837A1

WO2017041837A1 - Floor nozzle

Info

Publication number: WO2017041837A1
Application number: PCT/EP2015/070571
Authority: WO
Inventors: Julia Baumgart; Stephan Siegel; Christoph HÖRSCH; Roger Knee
Original assignee: Alfred Kärcher Gmbh & Co. Kg
Priority date: 2015-09-09
Filing date: 2015-09-09
Publication date: 2017-03-16
Also published as: EP3346894A1; EP3346894B1; CN108024675A; CN108024675B

Abstract

A floor nozzle for a vacuum cleaner is provided, comprising a floor body (68), at least one suction mouth (70) which is arranged on the floor body (60) and can be connected or is connected fluidically to a suction unit (31), and a contact device (74) which can be placed against a surface (72) to be cleaned and which encloses the at least one suction mouth (70), wherein a suction space (78), into which the suction mouth (70) opens, is formed between the surface (72) to be cleaned and the contact device (74) when the contact device (74) is placed against the surface (72) to be cleaned, and wherein the contact device (74) has, on at least one side (80), openings (98) into the suction space (78), wherein the at least one side (80) with the openings (98) is assigned at least one movable strip (104) which has at least two positions (108, 114), wherein a first position (108) is a closed position in which the openings (98) are covered, and a second position (114) is a freeing position in which the openings (98) are freed, and wherein a movement mechanism (116) for the at least one movable strip (104) is provided which couples the position of the at least one movable strip (104) to a stroke of the floor nozzle on the surface (72) to be cleaned.

Description

floor nozzle

The invention relates to a floor nozzle for a vacuum cleaner, comprising a bottom body, at least one suction mouth, which is arranged on the bottom body and fluidly connectable to a suction unit or connected, and a contact device, which can be applied to a surface to be cleaned and which at least one Suction orifice surrounds, wherein at investment of the investment device to the surface to be cleaned between the surface to be cleaned and the investment device, a suction chamber is formed, in which the suction mouth opens, and wherein the investment device has at least one side openings in the suction chamber. From DE 100 03 883 Cl a cleaning head for a floor cleaning device is known, which comprises a suction housing with a suction opening in suction openings and a suction housing holding the supporting part. The suction housing is opposite to the support member against the feed direction displaced and the cleaning head has gear means for implementing the sliding movement of the suction housing in a lifting and lowering movement of wiper lips.

From DE 10 2008 010 897 AI a nozzle for a canister vacuum cleaner is known with a chassis that has a rear chassis section with at least one roller and a projecting in the suction direction front portion to a terminal of a suction head. A suction head is tiltably mounted about a horizontal axis on the front portion of the chassis. From DE 101 05 371 AI or EP 1 228 732 Bl is a suction head for

Household vacuum cleaner known, which has a rigidly or tiltably mounted on an upper housing part sliding zone with a transverse to the direction of the suction opening. From DE 28 46 847 AI a floor nozzle for vacuum cleaner with tilting connection pipe is known as Saugrohraufnahme. In the non-prepublished international patent application

PCT / EP2015 / 054764 dated Mar. 6, 2015 describes a floor nozzle for a vacuum cleaner. This document is expressly incorporated by reference. The invention has for its object to provide a floor nozzle of the type mentioned, which has advanced features.

This object is achieved in the case of the floor nozzle according to the invention in that the at least one side with the openings at least one movable bar is associated, which has at least two positions, wherein a first position is a closed position in which the openings are covered, and a second position is a release position in which the openings are released, and that a movement mechanism for the at least one movable strip is provided, which couples the position of the at least one movable strip to a stroke of the floor nozzle on the surface to be cleaned.

The openings on the abutment device serve to allow dirt particles to pass from an outer space outside the suction space through the openings into the suction space and then be sucked off.

In the release position of the at least one movable strip, the openings are released, just to allow the passage of dirt particles through the contact device into the suction chamber.

In the closed position, the openings are covered. As a result, the suction chamber can be sealed well and a high suction force is provided. As a result, can effectively suck cracks and the like on the surface to be cleaned.

Depending on the stroke of the floor nozzle, the first position or the second position can be adjusted via the movement mechanism. This allows an operator set by a corresponding stroke, if he wants to have an increased suction, in particular for a scoring, or if he wants to release the openings in a normal suction, to allow a high dirt pickup of dirt particles on the surface to be cleaned.

This results in an extended functionality for the floor nozzle according to the invention.

It is particularly advantageous if the movement mechanism is designed such that it couples the position of the at least one movable strip to a stroke direction of the floor nozzle on the surface to be cleaned. In particular, a coupling to a forward stroke direction and to a reverse stroke direction is provided. If the openings are released for a forward stroke, then a "normal" dirt pickup is possible. For example, if the openings are covered for a reverse stroke, then effectively scratches and the like can be sucked out. Depending on the direction in which the operator moves the floor nozzle on the surface to be cleaned, the corresponding function is set automatically. In one embodiment, the abutment means comprises a first longitudinal side, a second longitudinal side spaced from the first longitudinal side, a first transverse side disposed between the first longitudinal side and the second longitudinal side, and a second transverse side spaced from the first transverse side and between the first longitudinal side and the second longitudinal side is arranged, wherein the openings are arranged on the first longitudinal side and / or the second longitudinal side and wherein the at least one movable strip is associated with the first longitudinal side and / or the second longitudinal side. The long sides and the transverse sides are at the corresponding formed the longitudinal elements and cross members. They form a wall for the suction chamber. It can thereby achieve an effective suction result. In a forward stroke of the floor nozzle, in particular, it is moved in a direction parallel to a direction from the second longitudinal side to the first longitudinal side, and in a backward stroke of the floor nozzle, it is moved in a direction parallel to a direction from the first longitudinal side to the second longitudinal side wherein the at least one movable strip is associated with the first longitudinal side and the movement mechanism is configured so that the at least one movable strip is in the release position during the forward stroke and the at least one movable strip is in the closed position during the return stroke. This results in bringing and holding the at least one movable strip in the release position or in the closed position as a function of the forward stroke or backward stroke. This results in an extended functionality, wherein a switching possibility by the stroke direction change is predetermined by an operator in a simple way. In particular, the at least one movable strip is positioned between the first longitudinal side and a front wall of the floor nozzle adjacent to the first longitudinal side and / or positioned between the second longitudinal side and a rear wall of the floor nozzle adjacent to the second longitudinal side. The at least one movable bar is positioned adjacent the longitudinal side with the openings to allow effective coverage.

It can be provided that the abutment device has one or more brush strips and / or one or more lip strips with one or more elastic lip elements.

Accordingly, in particular the at least one movable strip is designed as a lip strip with one or more elastic lip elements or brush strip. In one embodiment, the movement mechanism has a first arm pivotally mounted to the bottom body (and supported, for example, on the bottom body) and on which the at least one movable ledge is disposed, wherein pivotal movement of the first arm constitutes movement of the at least one movable arm Bar causes. The first arm holds the at least one movable bar and allows a change of position or the holding in the first position or the second position.

In one embodiment, it is further contemplated that a second arm is hinged to the first arm, the second arm being coupled to a device of the floor nozzle movable to the floor body, a position of that device being dependent on the floor body Stroke of the floor nozzle on the surface to be cleaned. The stroke of the floor nozzle on the surface to be cleaned and in particular the stroke direction determines the position of the device to the bottom body. This in turn determines the position of the second arm. The position of the second arm in turn determines whether the second position or the first position of the at least one movable strip is present. By means of the device movable to the base body, it is to a certain extent detected which stroke is present and in particular which stroke direction is present. Depending on the stroke direction, the position of the movable device to the bottom body is different. As a result, the relative position of the second arm to the bottom body is different borrowed. The position of the second arm to the bottom body in turn determines the position of the first arm. This in turn determines whether the at least one movable strip is in its second position or in its first position. A change in the stroke direction causes a movement of the device, in which case the movable bar is brought into its new position (the second position starting from the first position or the first position starting from the second position) via the second arm and the first arm , It is provided in particular that the means movable to the bottom body comprises a roller device, and in particular that the second arm is coupled to the movable device in the region of the roller device. The roller device can be used to "detect" which stroke direction is present in a simple manner, and this detection result can then be easily determined by the coupling of the second arm, which is preferably coupled to the movable device in the region of the roller device, to the first Arm and thus transferred to the at least one movable bar.

In particular, the first arm and the second arm are hinged to each other via a guide device, which allows a relative displacement between the first arm and the second arm, wherein the guide device comprises in particular a recess pin guide (link guide). It can thereby implement a relative linear movement or a relative linear component of movement of the floor nozzle during a lifting movement on the second arm in a pivoting of the first arm.

In particular, a recess-pin guide results in a simple structural design.

It is then advantageous if the guide device defines the release position and, in particular, an abutment of a pin of the recess pin guide defines the release position on a boundary of a recess of the recess pin guide. This makes it easy to define the excellent release position as a second position.

In particular, at least one tilting joint is provided, which is a

Tilting axis which is parallel to a pivot axis of the first arm. This makes it possible to achieve a good contact of the floor nozzle with a surface to be cleaned for a good suction result. It is advantageous if, in the closed position of the at least one movable strip, one of the faces to be cleaned facing the at least one movable strip is at least approximately in a plane with a corresponding end face of the contact device. This makes it possible to achieve a suction power optimization, in particular for the extraction of cracks or the like.

In one embodiment, a locking device is provided by which the first position and / or the second position can be fixed. As a result, an automatic change of a predetermined position of the at least one movable strip in dependence on a stroke of the floor nozzle can be blocked. This makes it possible to secure the first position and / or the second position "permanently". By the locking device, the mobility of the at least one bar is locked.

In particular, the locking device comprises a switch. A switch can then set an operator whether he wants automatic operation by depending on the lifting movement of the floor nozzle, the first position or the second position of the at least one movable bar is set, or if he has a fixed position of the movable bar regardless of the Hub of the floor nozzle wishes.

In one embodiment, the locking device comprises at least one movable element, in particular in the form of a pin element, which acts on a recess pin guide, wherein the movement mechanism has a first arm, which is pivotally mounted to the bottom body and on which the arranged at least one movable bar wherein a pivotal movement of the first arm causes movement of the at least one ledge, and wherein a second arm is hinged to the first arm and the first arm and the second arm are hinged together via a recess pin guide which causes relative displacement between the first arm and the second arm. The element can in particular engage in the recess and this relative mobility lock and thus determine a certain position of the first arm and thus turn the at least one movable bar.

Said at least one movable element (in particular pin element) is advantageously coupled to a switch which can be operated by an operator. By a corresponding switch position, the position of the pin member is then determined and thus in turn set whether a determination of at least one movable bar is present, that is, this is made immobile, or whether the mobility is released.

The inventive construction with the at least one movable bar can be integrated into the floor nozzle, which in the

PCT / EP2015 / 054764 dated Mar. 6, 2015. This document is expressly incorporated by reference. The elements described in said international patent application can be integrated into the floor nozzle according to the invention.

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

Figure 1 is a perspective view of an embodiment of a floor nozzle according to the invention in a Parkstell Figure 2 is a front view of a variant of the floor nozzle according to Figure 1 in a release position of a movable bar (in a forward stroke).

Figure 3 is a sectional view taken along line 3-3 of Figure 2;

Figure 4 is a front view as Figure 2 in a closed position of

movable bar; Figure 5 is a sectional view taken along the line 5-5 of Figure 4 (in a backward stroke); and

FIG. 6 shows an overlay view of the sectional views according to FIG. 3

(solid lines) and Figure 5 (broken lines).

An embodiment of a floor nozzle, which is shown in FIGS. 1 to 6 and denoted by 10 there, 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 side wall 20 is 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 underside 24 opposite to a bottom 26 (Figures 3, 5, 6).

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 forwardly by the front wall 14, covered to the rear by the rear wall 16 and up through the housing cover 22.

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

The housing 12 is associated with a port 30 for a suction tube. In this port 30, a suction pipe can be inserted and it is thereby a fluid-effective connection to a suction unit 31 of a vacuum cleaner manufactures- bar. 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. In this case, the connection 30 comprises a connection body 40, in which a recess 42 is formed. The recess 42 is cylindrical. The suction tube can be inserted and fixed in it.

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 47.

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 connector body 40. On the holder 36, a tilting joint 52 is formed. This 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 tilting axis 58 is formed, which coincides with the axis 34.

In one embodiment (FIG. 1), spaced channels 60 which run between the upper side 24 and the lower side 26 are arranged on the front wall 14 of the housing 12. 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.

In FIGS. 2 to 6, the channels are not shown.

When using the floor nozzle 10, a forward stroke direction 64 (sliding direction) is provided (Figures 1, 3, 6), which corresponds to the direction from the rear wall 16 to the front wall 14. There is further provided a reverse stroke direction 66 (draw direction) which is opposite to the forward stroke direction 64. In FIG. 1, the floor nozzle is in a "storage position".

(Parking position) shown, in which the pipe section 44 is oriented with a tube axis perpendicular or approximately perpendicular to the axis 34. In the figures 2 to 6 working positions of the floor nozzle 10 are shown in which the tube axis of the pipe section 44 is at an acute angle to the axis 34 and also to a surface to be cleaned 72.

In the housing interior 28, a bottom body 68 is arranged. The bottom body 68 is in particular plate-shaped. The bottom body 68 is fixedly arranged in the housing interior 28, wherein it may be formed in several parts with mutually movable parts or mutually immobile parts. The mouthpiece 47 is formed on the bottom body 68 or is disposed on the bottom body 68.

At the mouthpiece 47, a suction mouth 70 is formed, via which dirt particles can be sucked from a surface 72 to be cleaned.

The suction orifice 70 is associated with a contact device 74. The contact device 74 surrounds the suction orifice 70 and abuts with an end face 76 on the surface 72 to be cleaned. When the abutment means 74 abuts the surface 72 to be cleaned, a suction space 78 is formed between the surface 72 to be cleaned and the bottom body 68. In this suction chamber 78, the suction port 70 opens.

The abutment device 74 comprises a first longitudinal side 80, which is formed on a first longitudinal element. The first longitudinal side 80 is in particular straight. It also comprises, spaced from the first longitudinal side 80, a second longitudinal side 82. The second longitudinal side 82 is formed on a second longitudinal element and oriented in particular parallel to the first longitudinal side 80. A direction from the first longitudinal side 80 to the second longitudinal side 82 is parallel to the rearward stroke direction 66. A direction from the second longitudinal side 82 to the first longitudinal side 80 is parallel to the forward stroke direction 64. The abutment device 74 further has a first transverse side 84 and a second transverse side 86 (see FIG. 2), which are formed on corresponding transverse elements and, for example, are in each case rectilinear and are spaced parallel to one another. The first transverse side 84 and the second transverse side 86 connect the first longitudinal side 80 and the second longitudinal side 82 in the sense that the abutment device 74 forms a closed circumferential wall around the suction orifice 70, which defines the suction chamber 78. The connection between the first transverse side 84 and the second transverse side 86 is designed so that it is fluid-tight. The first transverse side 84 and the second transverse side 86 may each be fixedly connected to the first longitudinal side 80 and the second longitudinal side 82 or may be loosely joined to one another with the proviso of the fluid-tightness.

The wall of the abutment device 74, which is formed by the longitudinal side 80, the second longitudinal side 82, the first transverse side 84 and the second transverse side 86, has, for example, a rectangular shape or a shape on its end face which bears against the surface 72 to be cleaned approximate rectangular shape.

The abutment means 74 may comprise on its longitudinal sides 80, 82 and on its transverse sides 84, 86 brush strips and / or lip strips with an elastic lip (and in particular rubber lip). In one embodiment, the first longitudinal side 80 is formed on a brush strip 88 and the second longitudinal side 82 is formed on a lip strip 90. The first transverse side 84 and the second transverse side 86 are each formed on a lip strip in one embodiment.

The abutment 74 is used when the surface 72 to be cleaned is a hard surface. For the cleaning of a textile structure and in particular of a carpet, a textile surface cleaning function is provided, in which the installation device 74 does not come into contact with the surface 72 to be cleaned.

The abutment device 74 is arranged on a support 92 for this purpose. The carrier 92 is movable. It is coupled via a mechanism 94 to a switch 96, which is arranged on the housing cover 22. In Figure 1, the switch 96 is shown in a position in which the floor nozzle 10 is in a hard surface cleaning function. The first longitudinal side 80 of the contact device 74 is provided with openings 98 (see FIG. 2). An opening 98 fluidly connects an outer space 100 with the suction chamber 78. Through the openings 98, dust particles can pass from the outer space 100 into the suction chamber 78 and be sucked out.

Accordingly, the openings 98, which are spaced from each other, free spaces with respect to the end face 96, that is, the openings 98 each protrude up to a Einhüllendenlinie 102 (Figure 1) of the first longitudinal side 80 on the end face 76. This is when the investment device 74 at the surface to be cleaned 72, the opening 98 at the surface to be cleaned 72 open to allow the passage of dirt particles from the outer space 100 into the suction chamber 78, in particular when pushing the floor nozzle 10 in the forward stroke direction 64 as mentioned above. The attachment device 74 is assigned at least one movable strip 104 for covering the openings 98. In the embodiment shown, the first longitudinal side 80 of the abutment means 74 is associated with the openings 98, a movable bar 104.

In the exemplary embodiment shown, the movable strip 104 is arranged between the first longitudinal side 80 of the abutment device 74 and the front wall 14. It is arranged in particular between the bottom body 68 and the front wall 14. It is at least partially positioned in the housing interior 28.

The movable strip 104 has one or more cover elements 106 which can cover the openings 98.

In one embodiment, a cover member 106 is formed continuously in the longitudinal direction of the movable strip 104 to provide a closed surface. The cover element 106 may be formed as a brush element or as a lip element with an elastic lip and in particular rubber lip.

In principle, it is also possible for the movable strip 104 to have cover elements only at the locations of the openings 98. For the movable strip 104, a first position 108 is provided (FIGS. 4, 5, 6), which are a covering position or closed position for the openings 98. In the first position 108, the suction chamber 98 is closed when the contact device 74 also at the openings 98 by conditioning the movable bar 104 via an end face 110 on the surface to be cleaned 72.

In this first position 108 (covering position), it is effectively possible to "scrape off" cracks 112 (indicated in FIG. 5) on the surface 72 to be cleaned. The movable bar 104 has a second position 114 (Figures 2, 3, 6), which is a release position. In this release position 114, the movable strip 104 does not cover the openings 98, so that dirt particles can pass from the outer space 100 through the openings 98 into the suction space 78.

The movable bar 104 is movable between the first position 108 and the second position 114 and between the second position 114 and the first position 108, respectively. For this purpose, a movement mechanism 116 is provided. This movement mechanism 116 is in turn designed such that it is coupled with a stroke of the floor nozzle 10 and in particular with a stroke direction of the floor nozzle 10. By a stroke of the floor nozzle 10 in the forward stroke direction 64, the movable bar 104 is brought into the second position 114 (release position) and held there. By a stroke of the floor nozzle 10 in the reverse stroke direction 66, the movable bar 104 is brought into the first position 108 (covering position) and held there.

The movement mechanism 116 comprises a first arm 118 (FIGS. 3, 5, 6) which is pivotable about a pivot axis 120 via a pivot joint 122

is pivotally mounted on the bottom body 68 and is thus arranged pivotably on and relative to the housing 12.

The first arm 118 is formed as an angle element. This angle element of the first arm 118 comprises a first region 124a, which is articulated to the bottom body 68 via the pivot joint 122, and a second region 124b, which is oriented transversely and in particular perpendicular to the first region 124a.

At the second area 124b, for example, the movable bar 104 is fixed to a hook element 126 (FIG. 3). Pivoting movement of the first arm 118 causes movement of the movable bar 104 between the first position 108 and the second position 114 and between the second position 114 and the first position 108, respectively. The moving mechanism 116 further includes a second arm 128 which is secured to the first arm 108 first arm 118 is articulated.

The second arm 128 is coupled to a device 160 which is movable relative to the bottom body 68. The position of the device 160 to the bottom body 68 determines the position of the second arm 128 and thus the position of the first arm 118 and thus in turn the position of the movable bar 104. This coupling of the second arm 128 to the device 160 provides the "control signal" in which position (108 or 114) the movable bar 104 is brought.

The movable device 160 is movable relative to the bottom body 68. The device 160 has a first position 162 in a rearward stroke direction 66 of the floor nozzle 10 (FIGS. 5 and 6). This first position 162 of the device 160 corresponds to the first position 108 of the movable bar 104.

The device 160 also has a second position 164 in a forward stroke direction 64 of the floor nozzle 10 (FIGS. 3 and 6). The second position 164 of the device 160 to the bottom body 68 corresponds to the second position 114 of the movable bar 104th

The first position 162 of the device 160 and the second position 164 of the device 160 differ in a distance 166 of the tilting axis 58 of the tilting joint 52 to the bottom body 68 and to the housing 12 (in Figure 6, the distance 166 is the distance between the axis 34 and the rear wall 16). The device 160, which is movable relative to the bottom body 68, comprises the roller device 32 and the connection body 40. The hose 46 is fixed both to the connection body 40 and to the bottom body 68. Its flexible design allows the relative mobility of the device 160 to the bottom body 68th

The second arm 128 is fixed, for example, to the cylindrical portion 54 and projects from there into the housing interior 28. The housing 12, which is fixedly connected to the bottom body 68, is relative to the cylindrical portion 54, which is connected to the device 160 is, displaceable. Thereby, a relative mobility between the second arm 128 and the housing interior 28 is provided. The mobility includes a linear displacement component. The second arm 128 is hinged to the first portion 124a of the first arm 118 and hinged so that relative movement of the second arm 128 to the housing interior 28 in a movement of the movable bar 104 from the first position 108 to the second position 114 and . From the second position 114 in the first position 108 is effected or then the corresponding position 114 and 108 is held.

The second arm 128 connects the device 160 to the housing 12, the connection being movable (displaceable). For the articulation of the second arm 128 to the first arm 118, a guide device 130 is provided, which is designed such that a linear displacement of the second arm 128 and a linear displacement component of the second arm 128 relative to the housing interior 28 in a pivoting movement of the first arm 118 is feasible.

The guide device 130 is designed in particular as a recess pin guide 132 (link guide). It comprises a recess 134 for this purpose for example, on the first arm 118. This recess 134 is formed as a longitudinal slot.

In this recess 134, a pin 136 is immersed. This is, when the recess 134 is formed on the first arm 118, disposed on the second arm 128.

Basically, the pin 136 is displaceable in the recess 134, wherein a displacement causes a pivoting movement about the pivot axis 120 of the first arm 118.

The recess-pin guide 132 is designed so that upon contact of the pin 136 on a boundary wall 138 of the recess 134 (Figure 3), the release position (second position 114) is reached. Further pivoting away of the first arm 118 from the bottom body 68 is then locked.

The movement mechanism 116 functions as follows (see FIGS. 3, 5 and 6): When the floor nozzle 10 is pushed in the forward stroke direction 64 (FIG. 3), a force 140 is exerted, which is oblique to the surface 72 to be cleaned which is driven the floor nozzle 10 is oriented (with a corresponding oblique orientation of the tube axis of the pipe section 44 to the surface 72). There is a movement of the device 160 to the housing 12 until an end position (second position 164) is reached. This relative displacement is caused by the friction between the bottom body 68 and the surface to be cleaned 72, wherein in a suction operation of the bottom body 68 sucks. A force is transmitted to the first arm 118 via the second arm 128. If the movable bar 104 is not in the second position 114 (release position), this is brought to the second position 114.

If this is already in the second position 114, this second position 114 is held. It can then be sucked to the surface to be cleaned 72 with a forward stroke, with dirt particles can pass through the openings 98 in the suction chamber 78. When the floor nozzle 10 is slid on the surface 72 to be cleaned in the reverse stroke direction 66, a force is applied with a force vector 142 (FIG. 5) oriented approximately in the opposite direction of the force 140 as it moves in the forward stroke direction 64 is. Means 160 with second arm 128 moves away from housing 12 until an end position (first position 162) is reached. This relative displacement is caused by the friction between the bottom body 68 and the surface to be cleaned 72, wherein in a suction operation of the bottom body 68 sucks. The force is transmitted to the first arm 118 via the second arm 128. When the first arm 118 is not in the first position 108 (covering position), pivotal movement of the first arm 118 is initiated on the bottom body 68, which then brings the movable bar 104 into the first position 108 (covering position).

If the movable bar 104 is already in the first position 108, then it is held in this first position 108.

The openings 98 are then covered by the movable bar 104 with its cover member or cover members 106. As a result, an at least approximately fluid-tight wall is formed around the suction chamber 78. As a result, it is possible to effectively scrape cracks 112 or the like on the surface 72 to be cleaned.

Depending on the forward stroke direction 64 or reverse stroke direction 66 can be adjusted via the movable bar 104 and the movement mechanism 116 by an operator of the corresponding vacuum cleaner with the floor nozzle 10 by the stroke direction, whether the openings 98 are to be covered (first position 108 of the movable Bar 104) or to be released (second position 114 of the movable bar 104). In FIG. 6, the first position 162 (in broken lines) and the second position 164 of the device 160 are superimposed. Further, the resulting positions 108 (in broken lines) and 114 of the movable bar 104 are shown, wherein the first position 108 of the movable bar 104 corresponds to the first position 162 of the device 160, and the second position 114 of the movable bar 104 with the second position 164 of the device 160 corresponds. This results in extended application possibilities.

The floor nozzle can be basically the same design as the floor nozzle, which is described in the non-prepublished international application PCT / EP2015 / 054764 dated 6 March 2015 by the same applicant, the floor nozzle 10 then the additional functionality of the movable bar 104 in comparison to having the floor nozzle described in PCT / EP2015 / 054764.

In a cleaning operation of a vacuum cleaner, which is provided with the floor nozzle 10, the floor nozzle 10 is placed on the surface to be cleaned 72. In a hard surface cleaning function, the contact device 74 is brought into its operative position, so that it touches the face 72 to be cleaned with its end face 76. Depending on whether the floor nozzle 10 is moved on the surface to be cleaned in the forward stroke direction 64 ("pushed") or in the reverse stroke direction 66 ("pulled"), the movable bar 104 is in the second position 114 (release position) or in the first position 108 (cover position).

In the release position 114 of the movable bar 104 dirt particles can pass through the openings 98 into the suction chamber 78 and be sucked. In the covering position 108 of the movable strip 104, the openings 98 are covered and a closed suction space 78 is provided. It can thereby effectively be scored cracks 112 and the like.

An operator can thereby adjust over the stroke direction of the floor nozzle 10 on the surface to be cleaned 72, in which position (108 or 114), the movable bar 104 is located. The lifting device automatically adjusts the position of the strip 104. The automatic adjustment is made in accordance with the "natural application", so that an operator can use the

Position adjustment does not have to think, but the correct position, as mentioned, automatically adjusts itself.

It can provide an increased suction force, in particular for a scoop suction and the like, by bringing the movable bar 104 over the backward lifting direction 66 into the covering position 108.

The movement mechanism 116 has been described in the context of the first arm 118 and the second arm 128. It can be provided that a plurality of elements are provided corresponding to the first arm 118, which are spaced from each other. It is also possible that a plurality of elements corresponding to the second arm 128 are provided spaced from each other. The at least one movable bar 104 is then held by these first arms 118. Accordingly, the second arm or arms 128 then couple to the first arms 118.

In one embodiment, a locking device 170 is provided (see FIG. 2), which serves to fix the first position 108 and / or the second position 114, so that the moving bar does not move even if the lifting direction is changed. As a result, it is possible in particular under the control of an operator to determine in which position the strip 104 is held. In one embodiment, the detection Device 170 is formed so that the second position 114 can be fixed. As a result, the bar 104 is set "in a non-operative position".

In an alternative embodiment, it is provided that the first position 108 is determined. Thereby, the movable bar 104 is constantly in an operative position, regardless of whether a forward stroke or backward stroke of the floor nozzle 10 takes place.

In another embodiment, an operator may set both the first position 108 and the second position 114 as alternatives.

By the locking device 170, the automatic adjustment of the position of the movable bar 104 in its first position 108 or in its second position 114, depending on the stroke direction of the floor nozzle 10, so to speak, "off". The movement mechanism 116 is blocked.

It can be provided that the locking device 170 includes a switch 172, which is accessible to an operator. This switch 172 is arranged, for example, on the upper side 24 of the housing 12 or on a lateral side, such as the first side wall 18.

The switch 172 is coupled to an element 174, which acts on the movement mechanism 116 and can effect a corresponding blocking of the mobility of the quiet 104.

In one embodiment, the element 174 is a pin member which is supported in the housing 12 so that it can act on the recess 134 of the recess pin guide 132.

It is stored in particular displaceable. Upon engagement of the element 174 in the recess 134 in the second position 114 of the Leist 104, as shown in Figure 3, the element 174 blocks the pivoting of the first arm 118. This then the second position 114 is fixed.

To block the pivoting element 174 immersed in the recess 134, so that the pin 136 in the recess 134 is no longer displaceable. By a slidable mounting of the element 174, an operator via the switch 172 can set whether the pin member 174 is immersed in the recess 134 and has a blocking action (and thus determines the second position 114), or whether the pin member 174 from the recess 134 dipped is and thus an automatic adjustment of the position of the bar 104 depending on the stroke direction is possible.

In principle, it can also be provided that the pin element 174 is arranged and dimensioned such that it blocks the first position 108 (FIG. 5). In this case, the pin member 174 may also be immersed in the recess 134, wherein the immersibility is controlled via the switch 172. A pivotal movement of the first arm 118 is blocked by the pin member 174 blocking relative movement of the pin 136 to the recess 134. In FIG. 2, a direction of insertion 176 for the pin element 174 is indicated. As mentioned above, the element 174 is correspondingly slidably mounted in the immersion direction 176, in order to allow immersion into the recess 134 or a replaceability. The storage of the element 174 is, depending on the embodiment, such that the second position 114 can be fixed or the first position 108 can be fixed. It is also possible to provide a plurality and in particular two corresponding elements 174, wherein an element serves to fix the second position 114 and an element to fix the first position 108. It may alternatively be provided a single element corresponding to the element 174, which also has a mobility transverse to the immersion direction 176, depending on the position of the switch 172, which is then in particular a rotary switch, a determination of the first position 108 or the second Position 114. (In another switch position, the element 174 is then positioned so that it does not act on the recess pin guide 132.)

Floor nozzle

casing

front wall

rear wall

First sidewall

Second side wall

housing cover

top

bottom

Housing interior

connection

suction unit

roller device

axis

holder

web

connection body

recess

pipe section

tube

mouthpiece

page

tilting joint

Cylindrical area

element

tilt axis

channel

lower edge

Forward-stroke direction

Backward stroke direction sediment

suction mouth

Area to be cleaned

equipment installation

front

suction

First long side

Second long side

First cross page

Second transverse side

brush strip

lip strip

carrier

mechanism

switch

opening

outer space

Einhüllendenlinie

Moveable bar

cover

First position of the movable bar 104 front side

chink

Second position of the movable bar 104 movement mechanism

First arm

swivel axis

pivot

a first area

b Second area

Second arm

guide means

Recess-pin guide 134 recess

136 pen

138 boundary wall

140 power

142 power

160 facility

162 First position of the institution 160

164 Second position of the institution 160

166 distance

170 locking device

172 switches

174 element

176 immersion direction

Claims

claims

Floor nozzle for a vacuum cleaner, comprising a bottom body (68), at least one suction mouth (70) which is arranged on the bottom body (68) and fluidly connectable or connected to a suction unit (31), and an abutment means (74) which on a surface to be cleaned (72) can be applied and which surrounds the at least one suction orifice (70), wherein upon contact of the abutment device (74) against the surface (72) to be cleaned, between the surface (72) to be cleaned and the abutment device (74) a suction chamber (78) is formed, into which the suction orifice (70) opens, and wherein the abutment device (74) has openings (98) in at least one side (80) into the suction space (78), characterized in that the at least one At least one movable strip (104) is associated with the openings (98), which at least two positions (108, 114), wherein a first position (108) is a closed position in which the openings (98) gede a second position (114) is a release position in which the openings (98) are released, and in that a movement mechanism (116) is provided for the at least one movable bar (104) which controls the position of the at least one movable bar Bar (104) coupled to a stroke of the floor nozzle on the surface to be cleaned (72).

Floor nozzle according to claim 1, characterized in that the movement mechanism (116) is formed so that it couples the position of the at least one movable strip (104) to a stroke direction (64, 66) of the floor nozzle on the surface (72) to be cleaned.

3. floor nozzle according to claim 1 or 2, characterized in that the abutment means (74) has a first longitudinal side (80), one to the first longitudinal side (80) spaced second longitudinal side (82), a first transverse side (84) which between the first longitudinal side (80) and the second longitudinal side (82) is arranged, and a second transverse side (86) spaced from the first transverse side (84), which is arranged between the first longitudinal side (80) and the second longitudinal side (82) wherein the openings (98) are arranged on the first longitudinal side (80) and / or the second longitudinal side (82), and wherein the at least one movable strip (104) is the first longitudinal side (80) and / or the second longitudinal side (82). assigned.

4. Floor nozzle according to claim 3, characterized in that, in a forward stroke of the floor nozzle, it is moved in a direction (64) parallel to a direction from the second longitudinal side (82) to the first longitudinal side (80), and in a return stroke of the Floor nozzle is moved in a direction (66) parallel to a direction from the first longitudinal side (80) to the second longitudinal side (82), wherein the at least one movable strip (104) is associated with the first longitudinal side (80) and the movement mechanism (116) is formed so that in the forward stroke, the at least one movable bar (104) in the release position (114) and the rearward stroke is the at least one movable bar (104) in the closed position (108).

5. floor nozzle according to claim 3 or 4, characterized in that the at least one movable bar (104) between the first longitudinal side (80) and one of the first longitudinal side (80) adjacent the front wall (14) of the floor nozzle is positioned and / or between the second longitudinal side (82) and one of the second longitudinal side (82) adjacent rear wall (16) of the floor nozzle is positioned.

6. Floor nozzle according to one of the preceding claims, characterized in that the abutment means (74) one or more brush strips (88) and / or one or more lip strips (90).

7. Floor nozzle according to one of the preceding claims, characterized in that the at least one movable strip (104) is designed as a lip strip or brush strip.

8. floor nozzle according to one of the preceding claims, characterized in that the movement mechanism (116) has a first arm (118) which is pivotally mounted to the bottom body (68) and on which the at least one movable bar (104) is arranged, wherein pivotal movement of the first arm (118) causes movement of the at least one movable ledge (104).

A floor nozzle according to claim 8, characterized in that a second arm (128) is hinged to the first arm (118), the second arm (128) being coupled to a device (160) of the floor nozzle which is relative to the floor body (68) is movable, wherein a position of the device (160) to the bottom body (68) is dependent on the stroke of the floor nozzle on the surface to be cleaned (72).

10. Floor nozzle according to claim 9, characterized in that to the bottom body (68) movable means (160) comprises a roller means (32), and in particular that the second arm (128) to the movable means (160) in the region of the roller means (32) is coupled.

11. Floor nozzle according to claim 9 or 10, characterized in that the first arm (118) and the second arm (128) via a guide means (130) are articulated to each other which a relative displacement between the first arm (118) and the second Arm (128) allows, wherein the guide means (130) in particular a recess pin guide (132).

12. floor nozzle according to claim 11, characterized in that the

Guide means (130) defines the release position (114) and in particular an abutment of a pin (136) of the recess pin guide (132) at a boundary (138) of a recess (134) of the recess pin guide (132) the release position (114).

13. Floor nozzle according to one of claims 8 to 12, characterized by at least one tilting joint (52) having a tilting axis (58) which is parallel to a pivot axis (120) of the first arm (118).

14. Floor nozzle according to one of the preceding claims, characterized in that in the closed position (108) of the at least one movable strip (104) one of the surface to be cleaned (72) facing end face (110) of the at least one movable strip (104) at least approximately in a plane with a corresponding end face (76) of the abutment means (74).

15. floor nozzle according to one of the preceding claims, characterized by a locking device (170) through which the first position (108) and / or the second position (114) can be fixed.

16. floor nozzle according to claim 15, characterized in that the

Locking device (170) comprises a switch (172). Floor nozzle according to claim 15 or 16, characterized in that the locking device (170) comprises at least one movable element (174) which acts on a recess pin guide (132), wherein the movement mechanism (116) comprises a first arm (118). which is pivotally mounted to the bottom body (68) and on which the at least one movable bar (104) is arranged, wherein a pivotal movement of the first arm (118) causes movement of the at least one movable bar (104), and wherein the the first arm (118) and the second arm (128) are hinged together via the recess pin guide (132) which permits relative displacement between the first arm (118) and the second arm (128).