Nozzle attachment, suction nozzle, cleaning hose, and cleaning device

Abstract

The invention relates to a mouthpiece for a handle of a cleaning device, in particular for a handle of an extraction device or a vapour vacuum cleaner, the mouthpiece comprising a mouthpiece suction channel and a mouthpiece fluid channel fluidically separated from the mouthpiece suction channel, the mouth fluid channel comprises a fluid outlet on the distal end side for spraying a cleaning fluid, and wherein the mouth suction channel comprises a suction channel inlet on the distal end side for absorbing dirty fluid, characterized in that the mouth attachment comprises at least one cleaning element, the fluid outlet and the suction channel inlet are spatially separated from each other by at least one cleaning element for forming a fluid outlet region and a suction channel inlet region separated from the fluid outlet region. In addition, the invention also provides an improved suction nozzle, an improved cleaning hose and an improved cleaning device.

Description

TECHNICAL FIELD

[0001] The invention relates to a nozzle attachment for a handle of a cleaning device, in particular for a handle of a spray-suction device or a steam cleaner, wherein the nozzle attachment comprises a nozzle suction channel and a nozzle fluid channel which is fluidically separated from the nozzle suction channel, wherein the nozzle fluid channel comprises a fluid outlet for spraying cleaning fluid on a distal side, and wherein the nozzle suction channel comprises a suction channel inlet for sucking up dirty liquid on the distal side.

[0002] Furthermore, the invention also relates to a suction nozzle for a cleaning device, in particular for a spray-suction device or a steam cleaner, comprising a handle and a nozzle attachment.

[0003] Furthermore, the invention also relates to a cleaning hose for a cleaning device, in particular for a spray-suction device or a steam cleaner, wherein the cleaning hose comprises a hose suction channel with first and second hose suction channel ends and a hose fluid channel with first and second hose fluid channel ends, wherein the first hose suction channel end and the first hose fluid channel end are connected or connectable to the handle of the suction nozzle.

[0004] Furthermore, the invention also relates to a cleaning device, in particular in the form of a spray-suction device or a steam cleaner, comprising a suction device, a transport device, a suction interface and a cleaning fluid interface, wherein the suction device is fluidically connected to the suction interface, wherein the transport device is fluidically connected to the cleaning fluid interface, wherein the cleaning device further comprises a cleaning hose which is connected or connectable to both the suction interface and the cleaning fluid interface. BACKGROUND

[0005] A nozzle attachment, a suction nozzle, a cleaning hose and a cleaning device of the type mentioned at the outset are known, for example, from the not previously published German patent application 10 2022 111 008.7. With the nozzle attachment described therein, in particular larger surfaces, such as carpets and large-area soft cushions of furniture or the like, can be cleaned well.

[0006] A floor care machine is known from DE 16 28 859 A. AT 388 863 B discloses a device for cleaning a surface. Cleaning devices and cleaning apparatuses are described in EP 3 205 252 A1.

[0007] However, these known nozzle attachments are not suitable for cleaning, in particular smaller objects made of textile material, such as shoes. SUMMARY

[0008] It is therefore the task of the present application to improve a mouthpiece, a suction nozzle, a cleaning hose and a cleaning device of the type mentioned at the outset, such that small objects, for example shoes, can also be cleaned easily and well, in particular.

[0009] According to the application, this task is solved in a mouthpiece of the type mentioned at the outset by the fact that the mouthpiece comprises at least one cleaning element, and the fluid outlet and the suction channel inlet are spatially separated from one another by the at least one cleaning element for forming a fluid outlet region and a suction channel inlet region which is separated from the fluid outlet region.

[0010] The mouthpiece improved as proposed enables, in particular, an easy and clean cleaning of shoes, textiles or hard surfaces, more precisely in particular small objects and / or curved and / or vertical surfaces. In particular car seats, upholstered furniture, prams, clothing and carpets can be optimally cleaned with this mouthpiece. With the mouthpiece it is possible to spray cleaning fluid in the fluid outlet region. By moving the mouthpiece with the cleaning element over the surface loaded with cleaning fluid, it is possible to achieve a mechanical treatment of the object to be cleaned in addition to the dissolution of stains with the cleaning fluid. If the mouthpiece continues to move over the surface region loaded with cleaning fluid, the sprayed cleaning fluid and the absorbed dirt, the so-called dirty liquid, can be sucked into the suction channel inlet through the suction channel inlet region. Thus, with the mouthpiece it is possible to apply cleaning fluid to the object to be cleaned and to suck it away immediately after the stains have been dissolved and the surface to be cleaned has been mechanically treated with the at least one cleaning element. Thus, in the case of a corresponding geometric design of the region of the end of the distal end of the mouthpiece, i.e. in dependence on the shaping of the fluid outlet region and the suction channel inlet region, it is possible to clean the object without the cleaning liquid being distributed in an undesirable manner to the surroundings of the object to be cleaned. For example, in the case of a corresponding adaptation of the dimensions of the region of the end of the distal end of the mouthpiece, it is possible to clean small objects such as shoes without cleaning liquid dripping from the shoes. For optimal cleaning, the at least one cleaning element is resiliently and / or flexibly configured so that it can be adapted to the surface to be cleaned. In comparison with a mouthpiece in which the distal end is configured by injection molding from a hard plastic material, this makes it possible for stains on the object to be cleaned to be loosened not only by the cleaning fluid but also mechanically with the at least one cleaning element, so that the loosened dirt as a component of the dirty liquid can be sucked away from the object to be cleaned with the mouthpiece. The mouthpiece can be configured, in particular, for guiding it with one hand. To this end, the mouthpiece can be designed ergonomically so as to allow comfortable and joint-sparing work for the user, so that the user can clean the object with the mouthpiece for a longer period of time. Preferably, the value of the cross-sectional area defined by the fluid outlet region is between about 0.5 cm 2Approximately 5 cm 2 Within this range. In particular, the cross-sectional area can be between approximately 1 cm. 2 approximately 2 cm 2 Within the specified range. As described, the fluid outlet surface area can be surrounded by at least one cleaning element to separate the fluid outlet surface area from the suction channel outlet area. The given area size of the fluid outlet area is particularly suitable for cleaning objects with relatively small and uneven surfaces, such as shoes. Therefore, the cleaning fluid can be selectively applied only to the fluid outlet surface area. As the cleaning fluid, cleaning liquids such as water with or without chemical cleaning additives, cleaning vapors such as water vapor with or without chemical cleaning additives, or liquid-vapor mixtures with or without chemical cleaning additives can be used.

[0011] Advantageously, the suction channel inlet and fluid outlet are arranged adjacent to each other, and at least one cleaning element only partially or segmentally delimits the fluid outlet region and the suction channel inlet region. This arrangement can be achieved, for example, by separating the fluid outlet region and the suction channel inlet region from each other by a linearly or straight-lined cleaning element. The cleaning element can selectively extend in a straight line or in an arched manner. However, it is only configured to ensure that the fluid outlet region and the suction channel inlet region, each limited by its own closed edge, are only partially (i.e., segmentally) delimited by at least one cleaning element. For example, two semi-circular surface regions can be separated from each other by a straight-lined cleaning element. Alternatively, two adjacent rectangular surface regions can also be separated from each other by a straight-lined cleaning element. The nozzle attachment designed as described above enables unidirectional operation. In this design, the nozzle attachment should ideally move on the object to be cleaned such that, immediately after the cleaning fluid is sprayed, the surface to be cleaned immediately comes into contact with at least one cleaning element, and then, by continuing to move the nozzle attachment, the sprayed cleaning fluid and the dissolved dirt absorbed in the cleaning fluid are drawn as dirty liquid into the suction channel through the suction channel inlet area. Conversely, this nozzle attachment is unsatisfactory because the sprayed cleaning fluid remains on the object when it is being cleaned. In this undesirable approach, suction is performed first, cleaning is done with the cleaning element, and then cleaning fluid is sprayed, but the cleaning fluid cannot be drawn away.

[0012] According to a further preferred embodiment of the application, the suction channel inlet can be configured as a ring which is closed in itself and surrounds the fluid outlet. In particular, the suction channel inlet can concentrically surround the fluid outlet. This design has the advantage, inter alia, that the use of such a mouth attachment makes it possible to clean an object to be cleaned in any direction. If the cleaning fluid is applied from the cleaning fluid outlet to the object to be cleaned in the region of the fluid outlet, this fluid outlet region of the mouth attachment, for example the central region, is separated from the suction channel inlet region by the at least one cleaning element. The at least one cleaning element thus surrounds, more precisely in particular completely surrounds, the fluid outlet region. If the cleaning fluid is sprayed using such a mouth attachment, the mouth attachment can be moved in every arbitrary direction over the object to be cleaned, wherein, after a region of the object to be cleaned which has been sprayed with cleaning fluid has been swept over, the at least one cleaning element is always moved first over this wetted region of the object to be cleaned and then immediately the suction channel inlet region configured as a ring which is closed in itself is swept over the face of the object to be cleaned treated by the at least one cleaning element. The user can thus hold the mouth attachment arbitrarily. The user does not have to consider in which direction he moves the mouth attachment over the object to be cleaned. The cleaning of the object always follows the same principle, namely: application of cleaning fluid to the object to be cleaned, mechanical loosening of dirt using the at least one cleaning element by movement of the mouth attachment over the wetted face and then immediate suction of the dirt liquid in the suction channel inlet region and its removal through the suction channel inlet.

[0013] Advantageously, the inner and / or outer boundary of the ring-shaped suction channel inlet is configured as an ellipse, a circle, a polygon, in particular a triangle, a quadrangle or a pentagon. The inner and outer boundary can be similar in terms of geometry, for example both are circular, or can also be dissimilar in terms of geometry, for example the inner boundary is circular and the outer boundary is triangular or rectangular. The mouth attachment can thus be optimized for different uses.

[0014] Advantageously, the at least one cleaning element is configured to be fluid-permeable. In particular, the at least one cleaning element can be configured to be gas- and / or liquid-permeable. This enables reliable and in particular complete removal of cleaning fluid applied to the object to be cleaned, inter alia. Fluid permeability can be achieved in particular when the at least one cleaning element is configured from or comprises bristles or a sponge-like element.

[0015] Advantageously, the at least one cleaning element is configured as a ring which is closed in itself and surrounds the fluid outlet. This design enables the at least one cleaning element to completely delimit the fluid outlet region, inter alia. Cleaning fluid can be applied from the fluid outlet to the object to be cleaned only within the fluid outlet region delimited by the at least one cleaning element.

[0016] When the at least one cleaning element is configured in the form of a brush and comprises a plurality of bristles and / or bristle bundles, the mouth attachment can be configured simply and inexpensively. The plurality of bristles can be composed of any material. In particular, depending on the use of the mouth attachment, the bristles can be configured to be hard or soft, flexible or less flexible, elastic or substantially inelastic.

[0017] Advantageously, the at least one cleaning element is configured in the form of a ring brush having a ring-shaped bristle circle that is closed on itself. Such a ring brush can in particular be configured separately from the mouth attachment and then be replaced depending on the use of the mouth attachment or in the event of wear. Such a bristle circle can in particular separate the fluid outlet region from the suction channel inlet region in an optimally ring-shaped manner.

[0018] Advantageously, the bristles define a bristle longitudinal direction, the fluid outlet defines a fluid outlet longitudinal axis, and the bristle longitudinal direction and the fluid outlet longitudinal axis are oriented parallel or substantially parallel to one another. Such an arrangement can in particular enable the application of cleaning fluid from the fluid outlet to the object to be cleaned in the fluid outlet region while the bristles are loaded with cleaning fluid as little as possible. The efficiency of the cleaning action of the mouth attachment can thus be improved in particular.

[0019] Advantageously, the at least one cleaning element comprises a carrier, and the plurality of bristles is arranged or configured on the carrier. Such a design can in particular enable the carrier to be replaced with the plurality of bristles, if necessary, when the bristles are worn out or when other bristles, for example softer or harder bristles, should be used for a specific cleaning purpose.

[0020] When the carrier is configured in the form of a ring or sleeve and surrounds the fluid outlet, the mouth attachment can be configured in a simple manner. Thus, the central region of the mouth attachment in the fluid outlet region can in particular be configured rotationally symmetrical or substantially rotationally symmetrical. Furthermore, the carrier on which the bristles are arranged can be easily and reliably handled, for example in order to replace it with a carrier having other bristles.

[0021] In order to enable the targeted application of cleaning fluid to the surface to be cleaned, it is advantageous if the fluid outlet protrudes on the distal side beyond the boundary edge of the distal side of the carrier.

[0022] Advantageously, the fluid outlet comprises a mouth. The mouth can in particular be configured for applying a cleaning fluid mist or a cleaning fluid spray to the surface to be cleaned. Preferably, the mouth is configured for spraying cleaning fluid in a distribution of fine droplets, so that a particularly good cleaning result can thus be achieved. In particular, the formation of cleaning fluid stains on the object to be cleaned can thus be avoided or substantially avoided.

[0023] When the mouth is integrally, in particular monolithically, formed with the mouth attachment, the mouth attachment can be formed compactly. For example, the mouth attachment can thus be formed by injection molding. The mouth can then be formed in one work step, so that subsequent connections and thus additional work steps in the production of the mouth attachment can be avoided.

[0024] Alternatively, it is advantageous if the mouth is formed as a separate component and is configured to be connected to the end of the distal side of the mouth fluid channel in a detachable manner. In particular, the mouth can be configured to be screwed or latched to the end of the distal side of the mouth fluid channel. This design in particular enables the mouth to be formed of a different material than the mouth fluid channel or the mouth attachment. For example, the mouth can be formed of a metal material.

[0025] According to a further preferred embodiment of the application, it can be provided that the fluid outlet defines a free fluid outlet cross section, the suction channel inlet defines a free suction channel inlet cross section, and the ratio of the cross-sectional areas defined by the fluid outlet cross section and the suction channel inlet cross section is in the range of about 1 / 100 to about 1 / 20, in particular in the range of 1 / 100 to about 1 / 50. A cross-sectional area ratio in the given range in particular enables the cleaning of the object to be carried out without the cleaned fluid becoming excessively wet. In particular, it can thus be ensured that the cleaning fluid applied to the object to be cleaned can be completely sucked away through the suction channel inlet.

[0026] It is furthermore advantageous if a sealing element is arranged or formed on the distal side of the mouth attachment, which projects in the distal direction and surrounds the fluid outlet region and the suction channel inlet region. This sealing element in particular has the advantage that an optimal adaptation of the mouth attachment to the contour of the object to be cleaned can be achieved. Furthermore, it is thus also possible to minimize the ingress of excess air in the end region of the distal end of the mouth attachment. For example, the sealing element can be directly adjacent to the fluid outlet region and the suction channel inlet region. In alternative embodiments, the sealing element can be adjacent only to the suction channel inlet region, while the suction channel inlet region is separated from the fluid outlet region only by the at least one cleaning element.

[0027] In order to achieve the best possible cleaning result with the mouthpiece attachment, it is advantageous if the at least one cleaning element protrudes beyond the sealing element on the distal side and in the distal direction. In particular, this is advantageous in the working position in which the sealing element is deformed, for example slightly deformed or retracted in the proximal direction, or in the basic position in which the sealing element is not deformed. Thus, in any case, direct contact of the cleaning element with the surface to be cleaned can be achieved before the sealing element comes into contact with the surface to be cleaned. If the at least one cleaning element can be deformed accordingly, the best possible mechanical cleaning result with the at least one cleaning element can be achieved. Ideally, the cleaning element protrudes beyond the sealing element on the distal side by at least 0.5 mm. It is advantageous if it does not protrude more than 3 mm beyond the sealing element. Thus, on the one hand, sealing with the sealing element can be achieved, and on the other hand, reliable mechanical cleaning of the object to be cleaned with the at least one cleaning element can be achieved.

[0028] Preferably, the sealing element is adjacent to the suction channel inlet region only. This design is particularly desirable when the suction channel inlet region is formed by a suction channel inlet which is configured to be closed in itself, the suction channel inlet surrounding the fluid outlet in a ring. The suction channel inlet region is then delimited on the inside, i.e. centrally, by the at least one cleaning element and on the outside by the sealing element.

[0029] In order to be able to achieve a particularly good fit of the mouthpiece attachment to the surface to be cleaned, it is advantageous if the sealing element is configured to be deformable. In particular, the sealing element can be configured to be flexible and / or resilient. To this end, the sealing element can be composed, for example, of a correspondingly suitable material, for example of rubber or of an elastically deformable plastic.

[0030] Preferably, the sealing element is configured in the form of a sealing lip. The sealing element can thus be configured in the form of a sleeve with a correspondingly thin wall thickness which enables flexible and / or resilient deformation of the sealing element, i.e. of the sealing lip.

[0031] In order to be able to seal the suction channel inlet region optimally, the sealing element is preferably configured in the form of a sleeve and extends parallel or substantially parallel to the longitudinal axis of the fluid outlet. In particular, the sealing element can be arranged or configured concentrically to the longitudinal axis of the fluid outlet. The sealing element can in particular be incorporated at the suction channel inlet in a force- and / or form-locking manner. Alternatively, a material-locked connection can also be provided by means of adhesive or welding.

[0032] Advantageously, the sealing element is configured to be connected to the mouthpiece attachment in a detachable manner. Here, in particular a force- and / or form-locked connection can be provided. Thus, the sealing element can be replaced if necessary, for example when the sealing element is damaged, worn out or when, for example, a different flexibility of the sealing element is desired in cooperation with other cleaning elements.

[0033] Furthermore, it is advantageous for the sealing element and at least one cleaning element to each form a self-closing boundary of the suction channel inlet region constructed therebetween. In particular, the closed boundary formed by at least one cleaning element can be at least partially permeable to fluid in such a way that, for example, at least one cleaning element is composed of a plurality of bristles or bristle bundles.

[0034] Furthermore, it is advantageous that the sealing element defines a sealing element edge on the distal side, and at least one cleaning element defines a cleaning element end on the distal side, with the cleaning element end protruding beyond the sealing element edge on the distal side. Therefore, it is possible for the cleaning element end to contact the surface to be cleaned before the sealing element edge touches it. Thus, it is possible to ensure, for example, mechanical cleaning of the surface to be cleaned by a corresponding deformation of at least one cleaning element until the sealing element edge contacts the surface to be cleaned, and thereby achieve a seal between the nozzle attachment and the surface to be cleaned.

[0035] To best clean the flat surface, especially, the sealing element edge defines an edge plane. Depending on the application of the nozzle attachment, this edge plane may extend laterally, particularly vertically, relative to the longitudinal axis of the fluid outlet, or it may extend obliquely relative to the longitudinal axis of the fluid outlet.

[0036] Preferably, the edge plane extends laterally, and especially vertically, relative to the longitudinal axis of the fluid outlet. For example, when the edge plane extends obliquely relative to the longitudinal axis of the fluid outlet, a particularly ergonomic operation of the mouthpiece can be achieved, depending on the design of the mouthpiece.

[0037] Furthermore, it is advantageous that the sealing element has a length parallel to the longitudinal axis of the fluid outlet, and at least one cleaning element has a length parallel to the longitudinal axis of the fluid outlet, with the cleaning element length being greater than the sealing element length. Therefore, it can be particularly ensured that the distal end of the cleaning element protrudes beyond the distal side of the sealing element, especially beyond the edge of the sealing element.

[0038] According to another preferred embodiment of the invention, at least one cleaning element may have a cleaning element end face on its distal side, and the cleaning element end face defines an end face plane that extends laterally, and in particular vertically, relative to the longitudinal axis of the fluid outlet. As already explained, optimal cleaning effect can thus be achieved on the surface to be cleaned by means of at least one cleaning element.

[0039] Preferably, the end face of the cleaning element is defined by the end face of the free ends of the plurality of bristles pointing in the distal direction. This enables an optimum cleaning effect on the textile fabric, more precisely in particular when the bristles have a correspondingly small diameter, so that these can penetrate as deeply as possible into the fabric.

[0040] Advantageously, the edge plane and the end face plane extend parallel to one another, and the end face plane extends on the distal side of the edge plane. This design enables in particular that the mouth attachment is placed with the at least one cleaning element and the sealing element parallel to the face to be cleaned, and that the mouth attachment is moved correspondingly parallel to itself relative to the face to be cleaned.

[0041] For optimum cleaning results, it is advantageous if the edge plane and the end face plane have a spacing from one another, and this spacing has a value in the range from about 0.5 mm to about 3 mm. In particular, this spacing can have a value of about 1 mm. The given dimensioning of the spacing has the advantage in particular that not only a good cleaning effect can be achieved with the at least one cleaning element, but also the best possible sealing can be achieved with the sealing element.

[0042] Preferably, the at least one cleaning element is configured to be detachably connected to the mouth attachment. Thus, it can be replaced when necessary, more precisely for example when it is worn out or when a different type of cleaning element is preferably used to achieve a specific cleaning purpose.

[0043] The cleaning effect of the mouth attachment can also be improved in particular by the at least one cleaning element being arranged or configured on the mouth attachment in a movable manner, in particular with the aid of a drive. Thus, the user does not have to move the mouth attachment over the face to be cleaned by hand, but rather the relative movement between the at least one cleaning element and the surface to be cleaned is achieved by means of the drive.

[0044] Advantageously, the mouth attachment comprises a drive for moving the mouth attachment or parts thereof, in particular for moving the at least one cleaning element. The drive can be configured as a vibration drive, a rotary drive or an oscillation drive. For example, the drive can comprise an electric motor coupled to the at least one cleaning element in order to move the at least one cleaning element relative to the mouth attachment. Alternatively, the drive is arranged and configured for moving the mouth attachment relative to a handle coupled to the mouth attachment. Thus, the user does not have to move the mouth attachment over the face to be cleaned when performing mechanical cleaning, but rather only has to hold it relative to the face to be cleaned.

[0045] According to a further preferred embodiment of the application, it can be provided that the mouth attachment is configured in a bent manner and comprises a distal and a proximal mouth attachment section, the fluid outlet and the suction channel inlet being arranged or configured on the distal mouth attachment section, the proximal mouth attachment section being connected or connectable with the handle, and the distal and the proximal mouth attachment section being bent relative to each other. This bent mouth attachment design enables, inter alia, an ergonomic working with the mouth attachment. For example, the mouth attachment can be grasped in the region of the proximal mouth attachment section with one hand. Then, the distal mouth attachment section, which is inclined relative to the proximal mouth attachment section, is moved close to the surface to be cleaned without the user having to work with an excessive bending of the wrist.

[0046] Advantageously, the proximal mouth attachment section defines a proximal mouth attachment section longitudinal axis, and the distal mouth attachment section defines a distal mouth attachment section longitudinal axis, the proximal mouth attachment section longitudinal axis and the distal mouth attachment section longitudinal axis being bent at a bend angle, and the bend angle has a value in the range of about 90° to about 180°. In particular, the bend angle can be in the range of about 125° to about 155°. Depending on the use or application purpose of the mouth attachment, an optimum ergonomic handling for the user can be achieved with a bend angle in the given range.

[0047] When the mouth attachment is composed of plastic, the mouth attachment can be particularly simple and inexpensive to construct. In particular, at least one cleaning element can be composed of plastic. For example, the housing of the mouth attachment can be defined by a mouth attachment suction channel, which forms an outer sheath of the mouth attachment.

[0048] Furthermore, according to the application, the task of the initially mentioned type is solved in a suction nozzle of the initially mentioned type by configuring the suction nozzle with one of the above-mentioned mouth attachments.

[0049] The suction nozzle, which is configured or equipped with one of the above-mentioned mouth attachments, has the advantages already described above in connection with the preferred embodiments of the mouth attachment.

[0050] According to one embodiment, the mouth attachment can be connected with the handle in a non-detachable manner. In particular, the mouth attachment can be constructed in one piece with the handle. Advantageously, the handle and the mouth attachment are configured to be connectable with each other in a detachable manner. Thus, the most suitable mouth attachment can be coupled with the handle, regardless of the cleaning task to be solved. For example, the handle can be configured for controlling the delivery of the cleaning fluid. To this end, in particular, a valve device can be arranged or configured on the handle, which valve device cooperates, for example in a control-acting manner, with a delivery device of the cleaning apparatus.

[0051] In order to improve the operability of the suction nozzle, it is advantageous if the mouth attachment is arranged or configured to be twisted on the handle. In particular when the mouth attachment is configured in a bent manner, the end of the distal end of the mouth attachment, i.e. the suction channel inlet or the fluid channel outlet, can thus be turned in the desired direction without the hand position being changed.

[0052] Furthermore, according to the application, the task of the initially mentioned type is solved in a cleaning hose of a cleaning device of the initially mentioned type by the cleaning hose being configured in the form of one of the above-mentioned suction nozzles.

[0053] The cleaning hose thus configured then has the advantages already described above in connection with the preferred embodiments of the suction nozzle.

[0054] It is advantageous if the second hose suction channel end is fluidically connected or connectable to a suction interface of the cleaning device and the second hose fluid channel end is fluidically connected or connectable to a fluid interface of the cleaning device. This design enables, inter alia, the cleaning fluid, which is contained in a container on the cleaning device, if appropriate, in a container provided for this purpose, to be conveyed by means of the conveying device through the hose fluid channel to the fluid outlet of the mouth attachment and the dirty liquid to be sucked through the hose suction channel and then through the suction channel interface of the cleaning device into a dirty liquid container of the cleaning device.

[0055] Furthermore, according to the application, the task of the initially mentioned type is solved in a cleaning device of the initially mentioned type by the cleaning hose being configured in the form of one of the above-mentioned cleaning hoses.

[0056] The cleaning device then has the advantages already described above in connection with the preferred embodiments of the cleaning hose.

[0057] It is advantageous if the cleaning device comprises a control device for controlling the conveying device to activate and deactivate the fluid delivery. Thus, the user can purposefully load the surface to be cleaned with cleaning fluid. For example, a valve device or a control element can be arranged or configured on the handle of the suction nozzle in order to activate or deactivate the conveying device and thus to deliver cleaning fluid through the fluid outlet onto the surface to be cleaned, if appropriate, or to prevent the fluid delivery.

[0058] It is advantageous if the mouth attachment comprises a sensor, in particular a touch sensor and / or a pressure sensor, and the control device is connected in a sensor-controlled manner for automatically starting the fluid delivery when the sensor is actuated. This improvement simplifies the operation of the cleaning device, in particular, since the user does not have to actively control or activate the fluid delivery. In the proposed improvement, the fluid delivery is automatically started by appropriately operating the mouth attachment, for example, when a lower negative pressure limit value in the mouth suction channel is undershot, or when the mouth attachment touches the surface to be cleaned. This can be detected with a pressure sensor or a touch sensor. Attached Figure Description

[0059] The following description of preferred embodiments of the present invention is intended for a more detailed explanation in conjunction with the accompanying drawings. Wherein:

[0060] Figure 1 : A schematic perspective view showing partial exposure of a cleaning device in the form of a spray extraction device;

[0061] Figure 2 : A schematic perspective view showing a suction nozzle coupled to a cleaning hose when cleaning shoes;

[0062] Figure 3 : A schematic perspective view showing another embodiment of a suction nozzle coupled to a cleaning hose when cleaning a seat;

[0063] Figure 4 : An example is shown in Figure 3 A schematic perspective view of a first embodiment of the mouth accessory shown;

[0064] Figure 5 It shows Figure 4 The layout view along the direction of arrow A;

[0065] Figure 6 : shows along Figure 5 A schematic cross-sectional view along line 6-6;

[0066] Figure 7 A schematic perspective view showing a partial exposure of a second embodiment of the mouth accessory is shown;

[0067] Figure 8 It shows Figure 7 The layout view along the direction of arrow B;

[0068] Figure 9 : shows along Figure 8 A schematic cross-sectional view along line 9-9;

[0069] Figure 10 Examples are shown below. Figure 2 A perspective view showing a portion of the mouth accessory of a third embodiment shown;

[0070] Figure 11 It shows Figure 10 The layout view along the direction of arrow C;

[0071] Figure 12 : shows along Figure 11 Sectional view of line 12-12 in the middle;

[0072] Figure 13 A perspective view showing a portion of the exposed portion of a fourth embodiment of the mouth accessory is shown.

[0073] Figure 14 Fig. 1 shows a perspective view of a cleaning device according to a first embodiment of the application; Figure 13 Fig. 2 shows an exploded view of the cleaning device of Fig. 1 in the direction of arrow A;

[0074] Figure 15 Fig. 3 shows a cross-sectional view along line 3-3 in Fig. 2; Figure 14

[0075] Figure 16 Fig. 4 shows a partially exposed perspective view of a mouth attachment according to a first embodiment of the application;

[0076] Figure 17 Fig. 5 shows an exploded view of the mouth attachment of Fig. 4 in the direction of arrow B; Figure 16 Fig. 6 shows a cross-sectional view along line 6-6 in Fig. 5;

[0077] Figure 18 Fig. 7 shows a partially exposed perspective view of a mouth attachment according to a second embodiment of the application; Figure 17 Fig. 8 shows an exploded view of the mouth attachment of Fig. 7 in the direction of arrow C;

[0078] Figure 19 Fig. 9 shows a partially exposed perspective view of a mouth attachment according to a third embodiment of the application;

[0079] Figure 20 Fig. 10 shows an exploded view of the mouth attachment of Fig. 9 in the direction of arrow D; Figure 19 Fig. 11 shows a cross-sectional view along line 11-11 in Fig. 10;

[0080] Figure 21 Fig. 12 shows a partially exposed perspective view of a mouth attachment according to a fourth embodiment of the application; Figure 20 Fig. 13 shows an exploded view of the mouth attachment of Fig. 12 in the direction of arrow E;

[0081] Figure 22 Fig. 14 shows a partially exposed perspective view of a mouth attachment according to a fifth embodiment of the application; Fig. 15 shows an exploded view of the mouth attachment of Fig. 14 in the direction of arrow F;

[0082] Fig. 16 shows a cross-sectional view along line 16-16 in Fig. 15; Figure 23 Fig. 17 shows a partially exposed perspective view of a mouth attachment according to a sixth embodiment of the application; Figure 22 Fig. 18 shows an exploded view of the mouth attachment of Fig. 17 in the direction of arrow G; Fig. 19 shows a cross-sectional view along line 19-19 in Fig. 18;

[0083] Fig. 20 shows a partially exposed perspective view of a mouth attachment according to a seventh embodiment of the application; Figure 24 Fig. 21 shows an exploded view of the mouth attachment of Fig. 20 in the direction of arrow H; Figure 23 Fig. 22 shows a cross-sectional view along line 22-22 in Fig. 21; Fig. 23 shows a partially exposed perspective view of a mouth attachment according to an eighth embodiment of the application;

[0084] Fig. 24 shows an exploded view of the mouth attachment of Fig. 23 in the direction of arrow I; Figure 25 Fig. 25 shows a cross-sectional view along line 25-25 in Fig. 24; Figure 23 Fig. 26 shows a partially exposed perspective view of a mouth attachment according to a ninth embodiment of the application; Fig. 27 shows an exploded view of the mouth attachment of Fig. 26 in the direction of arrow J;

[0085] Fig. 28 shows a cross-sectional view along line 28-28 in Fig. 27; Figure 26 Fig. 29 shows a schematic view of a further embodiment of a cleaning device; and Fig. 30 shows a schematic view of a further embodiment of a cleaning device.

[0086] DETAILED DESCRIPTION Figure 27

[0087] Figure 1An embodiment of a cleaning apparatus, generally designated 10, is schematically shown in Fig. 1. It is constituted in the form of a spray extractor apparatus 12.

[0088] Figure 1 The construction of the cleaning apparatus 10 is schematically shown in Figure 27 Fig. 2.

[0089] In the housing 14 of the cleaning apparatus 10, a suction device 16 and a delivery device 18 are arranged. The suction device 16 is fluidly connected in action with a suction port 20 on the housing 14. The delivery device 18 is fluidly connected in action with a cleaning fluid port 22 on the housing 14. In the housing 14, a cleaning fluid reservoir 24 is arranged, which is constituted for containing a cleaning fluid, such as water. The cleaning fluid reservoir 24 is fluidly connected in action with the delivery device 18 in a manner not shown, so that cleaning fluid can be delivered from the cleaning fluid reservoir 24 to the cleaning fluid port 22 by means of the delivery device 18.

[0090] Further, in the housing 14, a dirty liquid reservoir 26 is accommodated, which is fluidly connected in action with the suction device 16. The suction device 16 is constituted for delivering dirty liquid from the suction port 20 into the dirty liquid reservoir 26.

[0091] The cleaning apparatus 10 further comprises a cleaning hose 28, which is constituted for being connected or connectable with both the suction port 20 and the cleaning fluid port 22.

[0092] The cleaning hose 28 comprises a hose suction channel 30 with a first hose suction channel end 32 and a second hose suction channel end 34. The cleaning hose 28 further comprises a hose fluid channel 36 with a first hose fluid channel end 38 and a second hose fluid channel end 40.

[0093] The cleaning hose 28 comprises an outer suction hose 42, which encloses or defines the hose suction channel 30. The hose fluid channel 36 is defined by a fluid hose 44, which is guided through the suction hose 42, and thus through the hose suction channel 30.

[0094] The cleaning apparatus 10 further comprises a suction nozzle 46 with a handle 48 and a mouth attachment 50.

[0095] On the handle 48, a valve device 52 is arranged for opening or closing a handle fluid channel 54, which extends through the handle 48. Further, a handle suction channel 56 extends through the handle 48. A proximal end of the handle fluid channel 54 is fluidly connected or connectable in action with the first hose fluid channel end 38. A proximal end of the handle suction channel 56 is connected or connectable in action with the first hose suction channel end 32.

[0096] The handle 48 and the mouth attachment 50 can be configured to be selectively permanently fixedly connected to each other or alternatively detachably connected.

[0097] In an embodiment, the mouth attachment 50 is arranged or configured on the handle 48 to be either twistable or non-twistable.

[0098] The cleaning hose 28 is configured for fluidically connecting or connectable the second hose suction channel end 34 with the suction interface 20 of the cleaning device and the second hose fluid channel end 40 with the cleaning fluid interface 22 of the cleaning device 10.

[0099] Figure 1 The cleaning device 10 schematically shown in Fig. 1 is operable independently from the power grid. For this purpose a rechargeable battery 58 is provided. The rechargeable battery is used for supplying electrical energy to all electrical components of the cleaning device 10. Alternatively or additionally, a power grid coupling device can also be provided.

[0100] A first embodiment of the mouth attachment 50 will be explained in detail below in connection with Figures 3 to 6 Fig. 2.

[0101] The proximal end 60 of the mouth attachment 50 is configured to be detachably connected with a distal end 62 of the handle 48. For this purpose coupling means 44, which are not shown and described in detail, are provided.

[0102] The mouth attachment 50 comprises a mouth suction channel 66 and a mouth fluid channel 68 fluidically separated from the mouth suction channel.

[0103] A proximal end 70 of the mouth suction channel 66 is fluidically connected with a distal end of the handle suction channel 56 in a coupled position of the handle 48 and the mouth attachment 50. This coupled position is schematically shown in Figure 3 Fig. 2. A proximal end 72 of the mouth fluid channel 68 is fluidically connected with a distal end of the handle fluid channel 54.

[0104] The mouth fluid channel 68 comprises a fluid outlet 74 for spraying cleaning fluid on the distal side. The mouth suction channel 66 comprises a suction channel inlet 76 for sucking up dirty liquid on the distal side.

[0105] The mouth attachment 50 further comprises a cleaning element 78. The cleaning element 78 spatially separates the fluid outlet 74 and the suction channel inlet 76 from each other, thereby defining a fluid outlet area 80 and a suction channel inlet area 82 separated from the fluid outlet area.

[0106] The mouth attachment 50 comprises a hollow-cylindrical tube section 84 which encloses or defines the mouth suction channel 66. At an end 86 on the distal side, a sealing element 88 is arranged or configured on the tube section 84 which projects in distal direction and encloses the suction channel inlet region 82 and the fluid outlet region 80. In Figures 3 to 6 In a first embodiment, the sealing element 88 is adjacent to the suction channel inlet region 82 only.

[0107] The sealing element 88 is configured to be deformable, more precisely flexible and / or elastic. It is realized in the form of a sealing lip.

[0108] The sealing element 88 is configured to be sleeve-shaped. It extends parallel to a fluid outlet longitudinal axis 92 which is defined by the fluid outlet 74. In this embodiment, the sealing element 88 concentrically encloses the fluid outlet longitudinal axis 92.

[0109] The sealing element 88 is configured to be either connected to the mouth attachment 50 in a non-detachable manner or to be connected to the mouth attachment 50 in a detachable manner.

[0110] The sealing element 88 defines a sealing element edge 94 on the distal side. The sealing element edge 94 in turn defines an edge plane 96. The edge plane 96 extends transversely, in the first embodiment shown in the figures perpendicularly to the fluid outlet longitudinal axis 92.

[0111] The sealing element 88 has a sealing element length 98 which is parallel to the fluid outlet longitudinal axis 92.

[0112] In a first embodiment, the sealing element 88 is adjacent to the suction channel inlet region 82 only. Figures 3 to 6 In a first embodiment, the fluid outlet 74 is centrally positioned in the center of the mouth attachment 50, seen distally, i.e. in the direction of the arrow A in Figure 4 In a first embodiment, the fluid outlet 74 is centrally positioned in the center of the mouth attachment 50, seen distally, i.e. in the direction of the arrow A in

[0113] The mouth fluid channel 68 is delimited or defined by a fluid tube 100 which concentrically extends inside the tube section 94 from the proximal end 72 in distal direction. A distal end 102 of the fluid tube 100 is slightly retracted in proximal direction relative to the distal end 96 of the tube section 84.

[0114] On the fluid tube 100, a short internally threaded section 104 is configured starting from the distal end 102. An externally threaded section 106 of a mouthpiece 108 is screwed into this internally threaded section. The mouthpiece 108 has a mouth channel 110 whose proximal end 112 is coupled to the mouth fluid channel 68 distally.

[0115] The internal diameter defined by the mouth channel 110 is significantly smaller than the internal diameter of the mouth fluid channel 68. In the first embodiment shown, the internal diameter of the mouth fluid channel 68 is more than 10 times larger than the internal diameter of the mouth channel 110.

[0116] The end 114 of the distal end of the mouth 108 is slightly retracted in proximal direction relative to the end 86 of the distal end of the tube section 84.

[0117] Outside the fluid tube 100, approximately in the region of the outer thread section 106, an annular carrier 116 is arranged. This carrier has a plurality of blind holes 118 which open in distal direction. In each of the blind holes 118 a bristle bundle 120 with a plurality of bristles 122 is accommodated. The bristles 122 are thus accommodated in the blind holes 118 with a proximal end section. The bristles 122 have a total length 124. They protrude from the blind holes 116 by a length 126. They thus protrude by a length 126 in distal direction from the carrier 116.

[0118] The cleaning element 78 comprises the carrier 116 and a plurality of bristles 112 arranged or configured on the carrier 116. As described, the annular or sleeve-shaped carrier 116 surrounds the fluid outlet 74. The end 114 of the distal end of the mouth 108 and the fluid outlet 74 protrude slightly beyond a distal side boundary edge 128 of the carrier 116 in distal direction.

[0119] The fluid outlet 74 comprises the mouth 108.

[0120] The cleaning element 78 is configured in the form of an annular brush 130. The annular brush 130 comprises a bristle ring 132 which is closed in itself. As described, the annular configured cleaning element 78 is configured to be closed in itself and annularly surrounds the fluid outlet 74.

[0121] The bristles 122 define a bristle longitudinal direction 134 which is oriented parallel or substantially parallel to the fluid outlet longitudinal axis 92.

[0122] The mouth 108 is configured as a separate component, for example composed of metal, and is configured to be detachably connected, i.e. to be screwed or to be latched, with the distal end of the mouth fluid channel 68. In alternative embodiments, the mouth 108 can additionally or alternatively be connected with the mouth fluid channel 68 material-lockingly, for example by gluing, welding or soldering.

[0123] Due to the particular arrangement of the fluid tube 100 in the tube section 84, the suction channel inlet 76 is configured to be annularly closed in itself and to surround, more precisely concentrically, the fluid outlet 74. The suction channel inlet 76 and the fluid outlet 74 are thus also arranged adjacent to each other.

[0124] The cleaning element 78 delimits the fluid outlet region 80, more precisely around it. In addition, the cleaning element 78 also delimits the suction channel inlet region 82 in radial direction to the fluid outlet longitudinal axis 92.

[0125] As described and schematically shown in the figures, the sealing element 88 and the cleaning element 78 form a closed boundary of the suction channel inlet region 82 constructed between them. Figures 3 to 6 In the first embodiment, both the inner and outer boundaries of the annular suction channel inlet 76 are constructed to be circular. Thus, an annular suction channel inlet 76 and an annular suction channel inlet region 82 bounded by the sealing element 88 and the cleaning element 78 are obtained.

[0126] The cleaning element 78 is designed to be fluid-permeable due to its bristle 122 design.

[0127] The cleaning element 78 defines a cleaning element end 136 on the distal side, which protrudes beyond the sealing element edge 94 on the distal side.

[0128] The cleaning element 78 forms a cleaning element end face 138 with a cleaning element end 136, which defines an end face plane 140. Figures 3 to 6 In the first embodiment shown, the end face plane 140 extends laterally, i.e., vertically, relative to the longitudinal axis 92 of the fluid outlet. The cleaning element end face 138 is also defined by the distally pointing end faces 142 of the free ends of the plurality of bristles 122.

[0129] exist Figures 3 to 6 In the first embodiment shown, the edge plane 96 and the end face plane 140 extend parallel to each other. However, the end face plane 140 extends on the distal side of the edge plane 96. Especially in Figure 6 As can be clearly seen, the edge plane 96 and the end face plane 140 are spaced apart from each other and define a distance 144 between them. The value of this distance 144 is in the range of about 0.5 mm to about 3 mm. Preferably, the distance 144 is about 1 mm.

[0130] In addition, Figure 6 It can also be clearly seen that length 126 defines a free cleaning element length 146 of cleaning element 78 parallel to the longitudinal axis 92 of the fluid outlet. This free cleaning element length 146 corresponds to the distance between the carrier 116 and the end face 142 of the bristles 122. The cleaning element length 146 is slightly larger than the sealing element length 98. In the first embodiment, the cleaning element length 146 differs from the sealing element length 98 by a distance 144.

[0131] In the first embodiment, the cleaning element 78 is configured to be detachably connected to the mouth accessory 50. To replace the cleaning element 78, the carrier 116 can be pulled distally from the fluid tube 100.

[0132] To achieve the desired mouth effect using the mouthpiece 108, the fluid outlet 74 (i.e., mouth passage 110) has a fluid outlet cross-section that is significantly smaller than the free suction channel inlet cross-section defined by the suction channel inlet 76. In the first embodiment shown in the figures, the ratio of the cross-sectional area of ​​the fluid outlet cross-section to the cross-sectional area of ​​the suction channel inlet cross-section is between about 1 / 100 and about 1 / 20. In other embodiments, this ratio may be between about 1 / 100 and about 1 / 50.

[0133] In alternative embodiments, the mouth 108 and the mouth accessory 50 are integrally formed, especially as a whole.

[0134] The fluid tube 100 is connected to the tube section 84 by means of two support rods 148. The support rods 148 extend obliquely from the fluid tube 100 toward the tube section 84 in the radial direction and the proximal direction.

[0135] The nozzle attachment 50 can be made entirely of plastic. In particular, the bristles 122 can be formed of plastic. The tubing section 84 can be formed together with the fluid tubing by injection molding. The sealing element 88 can be injection molded onto the tubing section 84 by means of two-component injection molding.

[0136] exist Figures 7 to 9 The second embodiment of the mouth accessory 50 is schematically shown. It is consistent with... Figures 3 to 6 The difference in the structure of the mouth attachment 50 in the first embodiment is that the mouth attachment 50 is constructed to be bent. Due to the high similarity between the mouth attachments 50 of the first and second embodiments, identical or functionally similar or equivalent parts are labeled with the same reference numerals.

[0137] like Figures 7 to 9 As schematically shown, the mouthpiece 50 includes a distal mouthpiece section 150 and a proximal mouthpiece section 152. A fluid outlet 74 and a suction channel inlet 76 are arranged or configured at the distal mouthpiece section 150. The proximal mouthpiece section 152 is configured to be either permanently connected to the handle 48 or detachably connected to the handle 48. The distal mouthpiece section 150 and the proximal mouthpiece section 152 are bent relative to each other.

[0138] The distal mouth accessory segment 150 defines a longitudinal axis 154 of the distal mouth accessory segment. The proximal mouth accessory segment 152 defines a longitudinal axis 156 of the proximal mouth accessory segment. The longitudinal axis 156 of the proximal mouth accessory segment and the longitudinal axis 154 of the distal mouth accessory segment form a bending angle 158, which has a value in the range of about 90° to 180°. In particular, this bending angle is in the range of about 125° to 155°. Figures 7 to 9In this embodiment, the bending angle 158 is approximately 145°. The fluid tube 100 and the tube section 84 are also bent at a bending angle 158, and define sections that extend coaxially with the longitudinal axes 154 and 156 of the distal and proximal nozzle accessory sections, respectively.

[0139] The distal end segment or end region of the distal mouth accessory segment 150 and according to Figures 3 to 6 The distal end region of the mouth attachment 50 in the first embodiment has the same structure, and therefore reference can be made to the above description in this regard.

[0140] Figures 10 to 12 The third embodiment of the mouth accessory 50 is schematically shown. This embodiment is also very similar to the first embodiment, and thus, as with all embodiments described below, the same and functionally similar components are indicated by the same reference numerals.

[0141] The third embodiment differs from the first embodiment only in the design of the distal end region 160 of the nozzle attachment 50. The tube section 84 is configured to transition from a circular cross-section to a substantially triangular cross-section towards the end 86. As in... Figure 11 As shown, along Figure 10 The tip of the nozzle attachment 50 is shown from above in the direction of the center arrow C, depicting a triangular end 86 with rounded corners. As in the first embodiment, a sealing element 88 is formed onto the end 86 and thus has a similar profile to the end 86.

[0142] The design of the end region 160 creates an annular, i.e. circular, boundary for the suction channel inlet region 82 via the cleaning element 78 in the direction of the longitudinal axis 92 of the fluid outlet. The outer boundary of the suction channel inlet region 82 (i.e., the boundary away from the longitudinal axis 92 of the fluid outlet) is constructed as a polygon, i.e., a triangle. Therefore, the inner and outer boundaries of the annular suction channel inlet 76 can be different from each other. Thus, they do not need to be geometrically similar as in the first and second embodiments of the mouth accessory 50.

[0143] Figures 13 to 15 A fourth embodiment of the mouth accessory 50 is illustrated exemplarily. The fourth embodiment differs from the third embodiment in the design of the carrier 116 and the design of the cleaning element 78. In the fourth embodiment, the carrier 116 is configured as a triangle and is therefore geometrically similar to the distal end 86 of the triangle of the end region 160 of the tube segment 84.

[0144] On the carrier 116, a plurality of bristle bundles 120, each containing multiple bristles 122, are arranged along the outer boundary, thus forming a triangular boundary or partition of the fluid outlet region 80 toward the suction channel inlet region 82.

[0145] Figures 16 to 18 The diagram schematically illustrates a fifth embodiment of the nozzle attachment 50. It differs from the first embodiment in the design of the end region 160. A circular tube section 84 extending proximally expands at the end region 160, defining a rectangular circumferential end 86 on which a rectangular sealing element 88 is arranged circumferentially in a corresponding manner. As in the first embodiment, the cleaning element 78 is arranged annularly around the fluid outlet 74, defining a circular fluid outlet region 80.

[0146] The boundary of the suction channel inlet region 82, achieved by the cleaning element 78, is annular. The sealing element 88 forms the quadrilateral boundary of the suction channel inlet region 82.

[0147] Figures 19 to 21 The sixth embodiment of the mouth accessory 50 is schematically shown. The difference between this embodiment and the fifth embodiment lies only in the design of the cleaning element 78, especially the design of the carrier 116 and the arrangement of the bristle bundles 120 or bristles 122.

[0148] The carrier 116 is substantially quadrilateral, i.e., square. Multiple bristle bundles 120, comprising multiple bristles 122, are arranged at the outer edge region of the carrier 116, more specifically, as in other embodiments, having a bristle longitudinal direction 134 oriented parallel or substantially parallel to the longitudinal axis 92 of the fluid outlet. Thus, the bristle bundles 120 form a boundary, or partition, or partition element, which, viewed from the front of the nozzle attachment 50 (i.e., facing...) Figure 19 The direction of arrow F in the diagram (indicated by the shape of a square) is shown. Therefore, the fluid outlet region 80 is essentially quadrilateral in shape. The suction channel inlet region 82 is rectangularly shaped on the outside and is bounded by a surrounding sealing element 88, which is positioned at the distal end of the end region 160 at a rectangular end 86.

[0149] In these six embodiments of the mouth accessory 50, the suction channel inlet region 82 is configured to annularly surround the fluid outlet region 80. This is achieved by having the cleaning element 78 annularly surround the fluid outlet region 80, regardless of the shape of the ring, such as being circular in the first embodiment, triangular in the fourth embodiment, or quadrilateral in the sixth embodiment.

[0150] In such Figures 22 to 25 In the seventh embodiment of the mouth attachment 50, as schematically shown, the end region 160 is shaped similarly to the fifth and sixth embodiments, such that the distal end 86 forms a rectangle. A sealing element 88 is arranged at the end 86 and, like in the fifth and sixth embodiments, is also formed to surround and close itself.

[0151] Unlike the embodiments so far, the cleaning element 78 is not arranged annularly around the fluid outlet 74, but it divides the rectangular area defined by the end region 160 into two rectangular areas which are separate from one another, namely the fluid outlet area 80, into which the fluid outlet 74 is arranged, and the suction channel inlet area 82, which opens into the suction channel inlet 76.

[0152] The carrier 116 is configured as a rectangular plate which has a central opening 162 into which the mouth 108 is inserted. The fluid outlet area 80 is thus delimited in this way on one side by the cleaning element 88 and on three sides by the sealing element 88.

[0153] The suction channel inlet area 82 is delimited on one side by the cleaning element 78 and on three sides likewise by the sealing element 88. In this embodiment, the suction channel inlet 76 and the fluid outlet 74 are thus arranged next to one another, wherein the cleaning element 78 only partially delimits the fluid outlet area 80 and the suction channel inlet area 82, respectively. Partial here means in sections. The circumferential boundary of the fluid outlet area 80 and of the suction channel inlet area 82 is defined by the cleaning element 78 on a common section, while it is defined by the sealing element 88 on the remaining sections, respectively.

[0154] The design of the seventh embodiment requires a further type of treatment of the surface to be cleaned. The seventh embodiment of the mouth attachment 50 can only implement a unidirectional treatment. If the mouth attachment 50 is placed with the sealing element edge 94 on the surface to be cleaned and cleaning fluid is applied to the surface to be cleaned from the fluid outlet 74, the mouth attachment 50 should only move as symbolically represented by the arrows 164 in Figure 24 The cleaning element 78 should move on the surface to be cleaned after it has been wetted, so that the suction channel inlet area 82 moves over the area of the surface to be cleaned after the mechanical treatment of the surface to be cleaned using the cleaning element 78, in order to then suck the dirty liquid containing the cleaning fluid and the dirt dissolved therein away from the surface to be cleaned, more precisely into the mouth suction channel 66. Only the described approach, i.e. the unidirectional treatment of the surface to be cleaned, ensures that the sprayed cleaning fluid is also sucked away again.

[0155] In contrast to the seventh embodiment, the embodiments one to six can implement that the direction of treatment is arbitrary when using these mouth attachments 50. Since the suction channel inlet area 82 annularly surrounds the fluid outlet area 80, it does not matter in which direction the mouth attachment 50 is moved on the surface to be cleaned.

[0156] Figure 6 Two arrows 166 and 168 are drawn exemplarily in Fig. 7, which should symbolically represent opposite directions of movement. In Figure 6In this embodiment, if cleaning fluid is applied to the surface to be cleaned, the cleaning fluid is applied to the surface in the fluid outlet region 80 (i.e., in the fluid outlet region 80 surrounded by the cleaning element 78). If the nozzle attachment 50 is subsequently moved in the direction of arrow 166, the cleaning element 78 will sweep across the surface to be cleaned, causing mechanical cleaning. During or after sweeping across the surface loaded with cleaning fluid, the suction channel inlet region 82 is positioned above the surface to be cleaned, which has been loaded with cleaning fluid. Figure 6 This is the area in the lower part between the cleaning element 78 and the sealing element 88.

[0157] If the nozzle attachment 50 moves in the opposite direction, i.e., in the direction of arrow 160, the surface area wetted by the cleaning fluid (which is then swept by the cleaning element 78 after being wetted) is positioned at... Figure 6 The middle structure is located above the cleaning element 78 and below the suction channel inlet area 82, which is defined by the sealing element 88.

[0158] The embodiment of the mouth attachment 50 may also have other boundaries of the annular, self-closing suction channel inlet 76 in alternative embodiments. In particular, the inner and outer boundaries may be similar or dissimilar in geometry. For the inner and / or outer boundaries, all conceivable shapes are possible, such as ellipses and circles in the first embodiment, quadrilaterals, especially triangles, in the fourth embodiment, and quadrilaterals, pentagons, or hexagons in the sixth embodiment.

[0159] For the desired cleaning result, in all the described embodiments of the mouth accessory 50, the cleaning element 78 is positioned such that it slightly protrudes beyond the sealing element 88 (i.e., the sealing element wheel 94) on the distal side and in a distal direction. Therefore, when the mouth accessory 50 is placed on the surface to be cleaned, a rough seal is initially achieved around the fluid outlet region 80 by the cleaning element 78. The deformable cleaning element 78 enables the mouth accessory 50 to be brought further closer to the surface to be cleaned until the sealing element edge 94 seals the surface, i.e., until the suction channel inlet region 82 surrounding or at least spatially separated from the fluid outlet region 80 is sealed.

[0160] Especially embodiments one to six of the mouth attachment 50 are excellently suitable for cleaning shoes 170 and seats 172 or their upholstery 174. Cleaning fluid, especially water or a cleaning agent dissolved in water, can thus be applied to the surface to be cleaned. By means of the seal provided by the sealing element 80 of the mouth attachment 50, the cleaning fluid is prevented from running off the object to be cleaned and, after application and mechanical treatment using the cleaning element 78, is sucked into the mouth suction channel 66 via the suction channel inlet area 82. Especially textile materials can thus be cleaned easily, gently and cleanly without soiling the surroundings.

[0161] The sealing element 88 can almost optimally seal against any curved surface, especially when it is constructed to be sufficiently flexible or elastic.

[0162] Using the mouth attachment 50 described, surfaces can be cleaned wet. Using the cleaning fluid, dirt can be dissolved and using the cleaning element 78, surfaces can be mechanically treated. The resulting dirt solution, i.e. the dirt dissolved in the cleaning fluid, can then be sucked off and collected in the dirt solution container 26 of the cleaning device 10.

[0163] In an embodiment of the mouth attachment 50 not shown, the cleaning element 78 is constructed to be movable. For this purpose, a drive 176 can be arranged on the handle 48, as is schematically shown in the embodiment of the mouth attachment 50 in Figure 26 Fig. 6. The drive 176 can be constructed to be selectively activated or deactivated depending on the cleaning task.

[0164] The drive 176 can be constructed, for example, in the form of a vibration drive, a rotary drive or an oscillation drive.

[0165] As described, the fluid delivery can be activated or deactivated manually by means of the valve device 52.

[0166] In an embodiment of the cleaning device 10 according to Figure 26 Fig. 1, a control device 178 is schematically shown in order to activate or deactivate the delivery device 18 for delivering cleaning fluid from the cleaning fluid container 24 to the fluid outlet 74. The control device 178 can be connected to the actuating element on the handle 48, for example, in a control-acting manner.

[0167] Alternatively, as Figure 26As is schematically shown, a sensor 180 in the form of a touch sensor or a pressure sensor can be arranged or configured on the mouth attachment 50, which is connected in a control-acting manner with the control device 178 for automatically starting the fluid delivery when the sensor 180 is actuated. Using such a mouth attachment 50, the cleaning fluid can thus be automatically delivered onto the surface to be cleaned when the mouth attachment 50 is placed on the surface to be cleaned. The sensor 180 can be, in particular, an inductive or capacitive proximity sensor or also a mechanical touch element. The control-acting connection to the control device 178 can be constituted either via a control line or also in a cable-free manner via a radio connection.

[0168] By correspondingly designing the end 60 of the proximal end of the mouth attachment 50, it is possible for the mouth attachment 50 to be provided as an accessory for commonly available cleaning devices 10 on the market. The mouth attachment 50 can be used depending on the cleaning task to be solved. In particular, the shape and size of the mouth attachment 50 can be chosen accordingly here. The described embodiments provide the person skilled in the art with sufficient inspiration to shape the distal end 86 and the sealing element 88 arranged therearound accordingly.

[0169] The fluid outlet region 80 of the described embodiments preferably has a cross-sectional area of about 1 cm 2 to about 2 cm 2 . A relatively small area can thus be defined for the wetting with cleaning fluid. An excessive application of cleaning fluid can thus be prevented.

[0170] List of reference signs

[0171] 10 cleaning device

[0172] 12 suction device

[0173] 14 housing

[0174] 16 suction means

[0175] 18 transport means

[0176] 20 suction interface

[0177] 22 cleaning fluid interface

[0178] 24 cleaning fluid container

[0179] 26 dirty fluid container

[0180] 28 cleaning hose

[0181] 30 hose suction channel

[0182] 32 first hose suction channel end

[0183] 34 second hose suction channel end

[0184] 36 Hose Fluid Channel

[0185] 38 First hose fluid channel end

[0186] 40 Second hose fluid channel end

[0187] 42 suction tubing

[0188] 44 fluid hose

[0189] 46 suction nozzle

[0190] 48 handles

[0191] 50 mouth attachments

[0192] 52 valve device

[0193] 54 Handle Fluid Channel

[0194] 56-handle suction channel

[0195] 58 batteries

[0196] 60 proximal end

[0197] 62 distal end

[0198] 64 coupling devices

[0199] 66-mouth suction channel

[0200] 68-nozzle fluid channel

[0201] 70 proximal end

[0202] 72 Proximal end

[0203] 74 fluid outlet

[0204] 76 suction channel entrance

[0205] 78 Cleaning Components

[0206] 80 fluid outlet area

[0207] 82 suction channel entrance area

[0208] Section 84

[0209] 86 end

[0210] 88 sealing elements

[0211] 90 sealing lip

[0212] 92 longitudinal axis of fluid outlet

[0213] 94 sealing element edge

[0214] 96 edge plane

[0215] 98 sealing element length

[0216] 100 fluid duct

[0217] 102 distal end

[0218] 104 internally threaded section

[0219] 106 externally threaded section

[0220] 108 mouth

[0221] 110 mouth passage

[0222] 112 end

[0223] 114 distal end

[0224] 116 carrier

[0225] 118 blind hole

[0226] 120 bristle bundle

[0227] 122 bristle

[0228] 124 total length

[0229] 126 length

[0230] 128 boundary edge

[0231] 130 annular brush

[0232] 132 bristle circle

[0233] 134 bristle longitudinal direction

[0234] 136 cleaning element

[0235] 138 cleaning element end face

[0236] 140 end face plane

[0237] 142 end face

[0238] 144 spacing

[0239] 146 cleaning element length

[0240] 148 support rod

[0241] 150 distal mouth attachment section

[0242] 152 proximal mouth attachment section

[0243] 154 distal mouth attachment section longitudinal axis

[0244] 156 proximal mouth attachment section longitudinal axis

[0245] 158 bend angle

[0246] 160 end region

[0247] 162 opening

[0248] 164 arrow

[0249] 166 arrow

[0250] 168 arrow

[0251] 170 shoe

[0252] 172 seat

[0253] 174 cushion

[0254] 176 driver

[0255] 178 control device

[0256] 180 sensor

Claims

1. A nozzle attachment (50) for the handle (48) of a cleaning device (10), particularly a nozzle attachment for the handle (48) of a spray vacuum device (12) or a steam vacuum cleaner, wherein, The mouth accessory (50) includes a mouth suction channel (66) and a mouth fluid channel (68) fluidly separated from the mouth suction channel, wherein the mouth fluid channel (68) includes a fluid outlet (74) for spraying cleaning fluid at its distal end, and wherein the mouth suction channel (66) includes a suction channel inlet (76) for absorbing dirty liquid at its distal end. The mouth accessory (50) is characterized in that it includes at least one cleaning element (78), and the fluid outlet (74) and the suction channel inlet (76) are spatially separated from each other by the at least one cleaning element (78) to form a fluid outlet region (80) and a suction channel inlet region (82) separated from the fluid outlet region.

2. The mouth accessory according to claim 1, characterized in that, The suction channel inlet (76) and the fluid outlet (74) are arranged adjacent to each other, and the at least one cleaning element (78) partially or segmentally delimits the fluid outlet region (80) and the suction channel inlet region (82), respectively.

3. The mouth accessory according to claim 1 or 2, characterized in that, The suction channel inlet (76) is configured as a self-closed annulus and surrounds, in particular concentrically surrounds, the fluid outlet (74). In particular, the inner and / or outer boundaries of the annular suction channel inlet (76) are constructed as ellipses, circles, polygons, especially triangles, quadrilaterals or pentagons.

4. The mouth accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (78) a) Constructed to be permeable to fluids and / or b) is constructed as a self-closed annulus and surrounds the fluid outlet (74).

5. The mouth accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (78) a) is configured as a brush and includes multiple bristles (122) and / or bristle bundles (120). and / or b) It is constructed in the form of a ring brush (130) and has a self-closing ring of bristles (132).

6. The mouth accessory according to claim 5, characterized in that, a) The bristles (122) define a longitudinal direction (134), the fluid outlet (74) defines a longitudinal axis (92) of the fluid outlet, and the longitudinal direction (134) of the bristles and the longitudinal axis (92) of the fluid outlet are oriented parallel or substantially parallel to each other. and / or b) The at least one cleaning element (78) includes a carrier (116), and the plurality of bristles (122) are arranged or constructed on the carrier (116). In particular, - The carrier (116) is configured as an annular or sleeve shape and surrounds the fluid outlet (74). and / or - The fluid outlet (74) extends beyond the boundary edge (128) of the carrier (116) on the distal side.

7. The mouth accessory according to any one of the preceding claims, characterized in that, The fluid outlet (74) includes a nozzle (108). In particular, the mouth (108) a) It is integrally formed with the mouth accessory (50), especially as a whole. or b) is constructed as a separate component and is configured to be detachably connected to the distal end of the mouth fluid channel (68), in particular to be screwed or to be locked.

8. The mouth accessory according to any one of the preceding claims, characterized in that, The fluid outlet (74) defines a free fluid outlet cross-section, the suction channel inlet (76) defines a free suction channel inlet cross-section, and the ratio of the cross-sectional area defined by the fluid outlet cross-section and the suction channel inlet cross-section is in the range of about 1 / 100 to about 1 / 20, especially in the range of about 1 / 100 to about 1 / 50.

9. The mouth accessory according to any one of the preceding claims, characterized in that, A sealing element (88) is arranged or constructed on the distal side of the mouth accessory (50) and protrudes distally and surrounds the fluid outlet region (80) and the suction channel inlet region (82).

10. The suction nozzle according to claim 9, characterized in that, The at least one cleaning element (78) protrudes distally beyond the sealing element (88) on the distal side and in a distal direction.

11. The mouth accessory according to claim 9 or 10, characterized in that, The sealing element (88) a) Only adjacent to the suction channel inlet area (82), and / or b) Constructed to be deformable, especially flexible and / or elastic, and / or c) It is constructed in the form of a sealing lip (90), and / or d) is constructed in a sleeve shape and extends parallel or substantially parallel, especially concentrically, to the longitudinal axis (92) of the fluid outlet.

12. The mouth accessory according to any one of claims 9 to 11, characterized in that, The sealing element (88) is configured to be detachably connected to the mouth accessory (50).

13. The mouth accessory according to any one of claims 9 to 12, characterized in that, The sealing element (88) and the at least one cleaning element (78) respectively form the self-closing boundary of the suction channel inlet region (82) constructed between them.

14. The mouth accessory according to any one of claims 9 to 13, characterized in that, The sealing element (88) defines a sealing element edge (94) on the distal side, and the at least one cleaning element (78) defines a cleaning element end (136) on the distal side, and the cleaning element end (136) protrudes beyond the sealing element edge (94) on the distal side. In particular, the edge (94) of the sealing element defines an edge plane (96). In particular, the edge plane (96) extends laterally and especially vertically relative to the longitudinal axis (92) of the fluid outlet.

15. The mouth accessory according to any one of claims 9 to 14, characterized in that, The sealing element (88) has a sealing element length (98) parallel to the longitudinal axis (92) of the fluid outlet, and the at least one cleaning element (78) has a cleaning element length (146) parallel to the longitudinal axis (92) of the fluid outlet, and the cleaning element length (146) is greater than the sealing element length (98).

16. The mouth accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (78) has a cleaning element end face (138) on its distal side, and the cleaning element end face (138) defines an end face plane (140) that extends laterally and, in particular, vertically relative to the longitudinal axis (92) of the fluid outlet (74). In particular, a) The end face (138) of the cleaning element is defined by the distal end face (142) of the free ends of a plurality of bristles (122). and / or b) The edge plane (96) and the end face plane (140) extend parallel to each other, and the end face plane (140) extends on the distal side of the edge plane (96). and / or c) The edge plane (96) and the end face plane (140) are spaced (144) apart from each other, and the spaced (144) has a value in the range of about 0.5 mm to about 3 mm, especially about 1 mm.

17. The mouth accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (78) is configured to be detachably connected to the mouth accessory (50).

18. The mouth accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (78) is arranged or constructed on the mouth accessory (50) in a movable manner, particularly in a manner movable by means of an actuator (176). In particular, the mouth accessory (50) includes a driver (176) for moving the mouth accessory or a portion thereof, especially for moving the at least one cleaning element (78), the driver being in particular a driver in the form of a vibration driver, a rotary driver or an oscillating driver.

19. The mouth accessory according to any one of the preceding claims, characterized in that, The mouthpiece (50) is bent and includes distal and proximal mouthpiece sections (150, 152), the fluid outlet (74) and the suction channel inlet (76) are arranged or constructed on the distal mouthpiece section (150), the proximal mouthpiece section (152) is connected to or can be connected to the handle (48), and the distal and proximal mouthpiece sections (150, 152) are bent relative to each other. Specifically, the proximal mouth accessory segment (152) defines a longitudinal axis (156) of the proximal mouth accessory segment, and the distal mouth accessory segment (150) defines a longitudinal axis (154) of the distal mouth accessory segment. The longitudinal axis (156) of the proximal mouth accessory segment and the longitudinal axis (154) of the distal mouth accessory segment form a bending angle (158), and the bending angle (158) has a value in the range of about 90° to 180°, particularly in the range of about 125° to about 155°.

20. The mouth accessory according to any one of the preceding claims, characterized in that, The mouth accessory (50), and in particular the at least one cleaning element (78), is made of plastic.

21. A nozzle (46) for cleaning equipment (10), particularly for a spray suction device (12) or a steam vacuum cleaner, said nozzle (46) comprising a handle (48) and a mouthpiece attachment (50), characterized in that, The mouth accessory (50) is configured in the form of any one of the preceding claims. In particular, a) The handle (48) and the mouth accessory (50) are configured to be detachably connected to each other. and / or b) The mouth attachment (50) is arranged or constructed on the handle (48) in a rotatable manner.

22. A cleaning hose (28) for cleaning equipment (10), particularly a cleaning hose for a spray suction device (12) or a steam cleaner, wherein, The cleaning hose (28) includes a hose suction channel (30) having first and second hose suction channel ends (32, 34) and a hose fluid channel (36) having first and second hose fluid channel ends (38, 40), wherein the first hose suction channel end (32) and the first hose fluid channel end (38) are connected to or can be connected to the handle (48) of the nozzle (46), characterized in that the nozzle (46) is configured in the form of the nozzle (46) according to claim 21. Specifically, the end (34) of the second hose suction channel is fluidly connected to or can be connected to the suction port (20) of the cleaning device (10), and the end (40) of the second hose fluid channel is fluidly connected to or can be connected to the fluid port (22) of the cleaning device (10).

23. A cleaning device (10), particularly a cleaning device in the form of a spray suction device (12) or a steam vacuum cleaner, said cleaning device comprising a suction device (16), a conveying device (18), a suction port (20), and a cleaning fluid port, wherein, The suction device (16) is fluidly connected to the suction port (20), and the delivery device (18) is fluidly connected to the cleaning fluid port (22), wherein the cleaning device (10) further includes a cleaning hose (28) connected to or capable of being connected to the suction port (20) and the cleaning fluid port (22), characterized in that the cleaning hose (28) is configured in the form of the cleaning hose (28) according to claim 22.

24. The cleaning equipment according to claim 23, characterized in that, The cleaning equipment (10) includes a control device (178) for controlling the conveying device (18) to enable and disable fluid delivery. In particular, the mouth accessory (50) includes a sensor (180), especially a touch sensor (180) and / or a pressure sensor, and the control device (178) is controllably connected to the sensor (180) for automatically initiating fluid delivery when the sensor (180) is manipulated.

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