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

Abstract

The invention relates to a nozzle attachment for a handpiece of a cleaning device, in particular for a handpiece of a steam extraction device or a steam vacuum 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 at least one fluid outlet for dispensing a cleaning fluid on a distal side, wherein the nozzle suction channel comprises a suction channel inlet for receiving a dirt flow on a distal side, and wherein the nozzle attachment comprises at least one cleaning element arranged or configured on a carrier element, wherein the at least one fluid outlet is arranged or configured on the carrier element. Furthermore, a suction nozzle, a cleaning device hose and a cleaning device are proposed.

Description

Technical Field

[0001] This invention relates to a nozzle attachment for a handheld part of a cleaning device, particularly a nozzle attachment for a handheld part of a vacuum cleaner or steam cleaner, wherein the nozzle attachment includes a nozzle suction channel and a nozzle fluid channel that is fluidly separated from the nozzle suction channel, wherein the nozzle fluid channel includes at least one fluid outlet for dispensing cleaning fluid at its distal end, wherein the nozzle suction channel includes a suction channel inlet for receiving waste fluid at its distal end, and wherein the nozzle attachment includes at least one cleaning element disposed or constructed on a carrier element.

[0002] Furthermore, the present invention also relates to a suction nozzle for cleaning equipment, particularly for a spray suction device or a steam vacuum cleaner, the suction nozzle comprising a handpiece and a nozzle accessory.

[0003] In addition, the present invention also relates to a cleaning equipment hose for cleaning equipment, particularly a cleaning equipment hose for a spray suction device or a steam vacuum cleaner, wherein the cleaning equipment hose includes a hose suction channel having first and second hose suction channel ends and a hose fluid channel having first and second hose fluid channel ends, wherein the first hose suction channel end and the first hose fluid channel end are connected to or can be connected to a handheld part of a suction nozzle.

[0004] Furthermore, the present invention also relates to a cleaning device, particularly a cleaning device in the form of a spray suction device or a steam vacuum cleaner, the cleaning device comprising a suction device, a conveying device, a suction interface and a cleaning fluid interface, wherein the suction device and the suction interface are fluidly connected, and wherein the conveying device and the cleaning fluid interface are fluidly connected, and wherein the cleaning device further comprises a cleaning device hose that is connected or can be connected to both the suction interface and the cleaning fluid interface. Background Technology

[0005] Nozzle attachments, suction nozzles, cleaning hoses, and cleaning devices of the type described at the beginning are known, for example, from unpublished German patent application 10 2023 114 139.2. The nozzle attachments described therein can be used, in particular, to clean small items made of textile materials, such as shoes.

[0006] However, the known nozzle accessories are relatively expensive to manufacture. In particular, assembling nozzle accessories requires assemblers to have corresponding manual skills. Summary of the Invention

[0007] Therefore, the object of the present invention is to improve the nozzle attachments, suction nozzles, cleaning hoses and cleaning devices of the type described at the beginning, so that they can be manufactured in a particularly simple manner.

[0008] In nozzle attachments of the type described at the beginning, this task is solved according to the invention by having at least one fluid outlet arranged or constructed on a supporting element.

[0009] This design particularly enables the simple assembly of nozzle attachments, especially when mounted on a handheld device. The nozzle attachment includes a carrier element, on which not only is at least one cleaning element arranged or constructed, but also at least one fluid outlet. In this manner, the nozzle attachment can be assembled quickly and without special manual skills, because assembly is significantly simplified by the fact that the carrier element includes not only at least one cleaning element but also at least one fluid outlet. Specifically, the nozzle portion is constructed as an assembly unit that can be connected to optional additional components of the nozzle attachment to form the nozzle attachment. In particular, all described components, especially the carrier element, at least one cleaning element, and at least one fluid outlet, can be integrally, especially monolithically, constructed. This monolithic or one-piece construction can be achieved simply and with high precision by injection molding, especially two-component injection molding.

[0010] Preferably, at least one fluid outlet is integrally formed with the carrier element. In particular, they can be integrally formed. This design eliminates the need to assemble at least one fluid outlet, for example in the form of a nozzle, onto other components of the carrier element or nozzle accessory.

[0011] Depending on the application, nozzle accessories may include one, two, three, or more fluid outlets. Depending on their design and quantity, this allows for optimal wetting of the surface to be cleaned with the cleaning fluid.

[0012] Advantageously, the nozzle suction channel defines the longitudinal axis of the nozzle suction channel, and the nozzle attachment is configured to be mirror-symmetrical or substantially mirror-symmetrical about at least one mirror plane containing the longitudinal axis of the nozzle suction channel. This design simplifies the design structure of the nozzle attachment. In particular, the nozzle attachment can be configured to be mirror-symmetrical about two mutually perpendicular mirror planes.

[0013] When at least one fluid outlet is configured as a nozzle, the cleaning fluid can be applied in a targeted manner. In particular, at least one fluid outlet can be configured as a point jet nozzle to generate a point jet, or as a cone jet nozzle to generate a cone jet.

[0014] Furthermore, it is advantageous to configure the nozzle in the form of a fan-shaped nozzle to generate a fan-shaped jet. For example, this allows for precise loading of cleaning fluid into a cleaning element configured in the form of a bristle array.

[0015] Advantageously, the nozzle is held on the carrier element by force-locking and / or form-locking and / or material-locking. This method particularly enables the nozzle attachment to be constructed such that the nozzle, by design, will not detach from the nozzle attachment. In this case, the nozzle can only be removed by breaking the nozzle attachment.

[0016] Advantageously, the nozzle is constructed as a separate component and can be configured to be detachably connected to the distal end of the nozzle fluid channel. In particular, the nozzle can be configured to be screwed or latched to the distal end of the nozzle fluid channel. This nozzle can be replaced if necessary. For example, if the nozzle is connected to the distal end of the nozzle fluid channel by latching, the nozzle can be connected to that distal end particularly securely. The distal end of the nozzle fluid channel can be defined, in particular, on a carrier element.

[0017] According to another preferred embodiment, at least one fluid outlet may be positioned at least partially, and in particular completely, directed towards at least one cleaning element for wetting the cleaning element with the cleaning fluid. This design has a particular advantage in that the cleaning fluid can not only be applied directly to the surface to be cleaned, but the surface to be cleaned can also be wetted by at least one cleaning element. Therefore, dirt on the surface to be cleaned can be removed particularly well and gently.

[0018] Advantageously, at least one cleaning element defines a longitudinal axis or plane of the cleaning element, and at least one fluid outlet is configured to generate a cleaning fluid jet that defines a jet axis or plane, with one jet axis or plane forming an angle with the longitudinal axis or plane of the cleaning element on the other side. This design particularly enables the wetting of at least one cleaning element with cleaning fluid exiting from at least one fluid outlet. However, depending on the orientation of the angle of inclination, the cleaning fluid jet may also be directed away from at least one cleaning element.

[0019] Preferably, the tilt angle has a value in the range of about 0° to about 30°. Depending on the length of at least one cleaning element, the cleaning fluid jet can therefore be directed toward or away from the cleaning element.

[0020] To prevent the unrestricted application of cleaning fluid to the surface to be cleaned, it is advantageous that the nozzle accessory includes a sealing element that projects distally and defines the suction channel inlet. If at least one fluid outlet is arranged or constructed within the area surrounded by the sealing element, i.e., within the area of ​​the suction channel inlet, then the undesirable lateral application of cleaning fluid to the surface to be cleaned outside the sealing element can be effectively prevented. When the sealing element is placed on the surface to be cleaned, the cleaning fluid can only be applied to the surface within the area surrounded by the sealing element. If the sealing element defines the suction channel inlet as described, the distributed cleaning fluid can also be drawn away directly through the suction channel inlet and thus within the area defined by the sealing element.

[0021] Advantageously, at least one cleaning element protrudes distally and in a distal direction beyond the sealing element. This particularly enables the cleaning element to contact the surface to be cleaned before the sealing element does. The proposed design is advantageous, especially for cleaning recesses on surfaces, such as seams or textured patterns on shoes, because it reduces wear on the sealing element.

[0022] To achieve optimal matching between the sealing element and the arched surface, it is advantageous that the sealing element be configured to be deformable. In particular, the sealing element can be configured to be flexible and / or elastically deformable.

[0023] A good seal between the nozzle attachment and the surface to be cleaned can be achieved, for example, by the sealing element being constructed in the form of a sealing lip. The sealing lip is typically thin enough that it can be easily deformed to match the contours of the surface to be cleaned. This is especially true for arched surfaces, such as those found on shoes, thus achieving optimal cleaning results without soiling the surrounding environment or loading the cleaning fluid onto the object being cleaned.

[0024] Advantageously, the sealing element is constructed in the form of a sleeve and extends parallel to or substantially parallel to the longitudinal axis of the nozzle suction channel of the nozzle attachment. In particular, the sealing element can extend concentrically with the longitudinal axis of the nozzle suction channel. This sealing element is particularly effective in sealing the enclosed area when the nozzle attachment is held against the surface to be cleaned with the sealing element in place.

[0025] For manipulating the nozzle attachment, it is advantageous to arrange or construct the sealing element on a sealing element carrier. For example, this sealing element carrier can be configured to be permanently or temporarily detachably connected to the handpiece. Therefore, the sealing element can be replaced, for example, depending on the cleaning task. If it is desired to handle a large area, a sealing element carrier with a sealing element surrounding the large area can be used. In the case of small, delicate surfaces, a corresponding sealing element surrounding only the small area can be used.

[0026] Preferably, the sealing element carrier is constructed in a sleeve shape. This particularly enables the sealing element carrier to also serve as part of the nozzle suction channel. In other words, the sealing element carrier can therefore at least segmentally limit the nozzle suction channel.

[0027] Advantageously, the sealing element is arranged or configured to protrude beyond the distal end of the sealing element carrier on its distal side. This, in particular, enables the sealing element carrier to be configured with a stable shape, so that the sealing element can be reliably manipulated. For example, this allows the sealing element carrier to be configured to be detachably connected to either an adapter element, which will be described in more detail below, or to a carrier element.

[0028] Preferably, the sealing element is connected to the sealing element carrier by force-locking and / or form-locking and / or material-locking. Therefore, the sealing element can be connected to the sealing element carrier particularly permanently and preferably irretrievably. In particular, the sealing element can be configured such that it can only be removed from the sealing element carrier by destruction.

[0029] When the sealing element is injection molded onto the sealing element carrier, the nozzle accessory can be formed in a simple way.

[0030] For manipulating the nozzle attachment, it is advantageous that the sealing element carrier is configured with a stable or substantially stable shape.

[0031] To prevent the cleaning fluid from laterally escaping from the area of ​​the surface to be cleaned, it is advantageous for the sealing element to form a closed boundary of the suction channel inlet. Therefore, the area on the surface to be cleaned corresponding to the cross-section of the suction channel inlet can be optimally sealed by the sealing element.

[0032] Advantageously, 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. As described above, it is therefore particularly possible to make at least one cleaning element contact the surface to be cleaned before the sealing element edge, especially the entire sealing element edge, can come into contact with the surface to be cleaned. The user can therefore deform at least one cleaning element to perform cleaning, especially to apply cleaning force, for example, in the case of a brush or bristle-type cleaning element, while simultaneously sealing the surface to be cleaned with the sealing element.

[0033] Advantageously, the edge of the sealing element defines the edge plane. This design is particularly effective in enabling the cleaning of flat surfaces with nozzle attachments.

[0034] Advantageously, the edge plane extends transversely to the longitudinal axis of the nozzle suction channel. In particular, the edge plane can form an angle with the longitudinal axis of the nozzle suction channel ranging from 0° to approximately 90°. Therefore, the edge plane can also extend perpendicularly to the longitudinal axis of the nozzle suction channel. In a particularly advantageous design of the nozzle accessory, for example when at least one cleaning element is configured as a scraper, the edge plane extends transversely to the longitudinal axis of the nozzle suction channel at an angle, particularly ranging from 30° to 60°.

[0035] Advantageously, the shape of the sealing element remains constant along the sealing element segment, originating from its edge and moving towards the sealing element carrier. In this way, a region can be formed whose shape corresponds to the suction channel inlet and extends along the length of the sealing element segment. In particular, the shape of the sealing element can also be matched to the shape of at least one cleaning element.

[0036] Advantageously, the sealing element has a constant cross-section extending from the sealing element carrier. In this way, the entire cross-section provided by the sealing element carrier can also be used to form the suction channel inlet.

[0037] Advantageously, the sealing element has a gradually decreasing cross-section extending from the sealing element carrier. This design is particularly advantageous when at least one cleaning element is constructed to be very small compared to the cross-section of the sealing element carrier. In this case, it can be advantageous that the suction channel inlet enclosed by the sealing element is also correspondingly small. This can be achieved by the gradual decrease in the cross-section of the sealing element from the sealing element carrier towards the edge of the sealing element.

[0038] Preferably, the cross-section defined by the sealing element carrier gradually decreases towards the edge of the sealing element. This design particularly enables the nozzle attachment to be constructed with a stable shape even in regions of the sealing element carrier where the sealing element carrier has a gradually decreasing cross-section. For example, starting from the distal end of the sealing element carrier, the sealing element can thus have a constant cross-section and a correspondingly unchanging shape up to the edge of the sealing element.

[0039] Advantageously, the distal end of the sealing element carrier defines an end profile that corresponds to or substantially corresponds to the shape of the sealing element edge. This design particularly enables the formation of a sealing element section with a constant cross-section extending from the distal end of the sealing element carrier towards the sealing element edge. In the case of a shape-stable sealing element carrier, the sealing element can thus only deform within the region from the distal end of the sealing element carrier to the sealing element edge. This improves the maneuverability of the nozzle attachment.

[0040] Preferably, the cross-sectional shape of the sealing element changes from the sealing element carrier toward the edge of the sealing element. This design is particularly advantageous when it is necessary to clean very small surface areas.

[0041] Advantageously, the sealing element carrier has a circular cross-section at the end abutting the sealing element. This sealing element carrier can thus be coupled to a handheld device or cleaning equipment hose in various orientations. This can be achieved, for example, via a bayonet coupling device having multiple circumferentially distributed bayonet coupling elements. Therefore, a simple and reliable connection can be established between the sealing element carrier and the handheld device, or between the sealing element carrier and an adapter that can also be coupled to the handheld device.

[0042] Advantageously, the sealing element has a free sealing element length parallel to the longitudinal axis of the nozzle suction channel, extending from the distal end of the sealing element carrier, and at least one cleaning element has a free cleaning element length parallel to the longitudinal axis of the nozzle suction channel, extending from the distal end of the carrier element, with the cleaning element length being greater than the sealing element length. This design particularly enables at least one cleaning element to protrude beyond the sealing element on the distal side, especially beyond the edge of the sealing element. As already explained, therefore, at least one cleaning element can contact the surface to be cleaned before the sealing element touches it.

[0043] According to another preferred embodiment, the nozzle accessory can be configured in multiple parts, including an adapter portion for connection with a handheld device, a nozzle portion, and a sealing portion, and the nozzle portion, sealing portion, and adapter portion are configured to be detachably connected to each other. This nozzle accessory is particularly capable of connecting to different handheld devices. For this purpose, for example, the sealing portion and nozzle portion can be retained. Only a matching adapter portion is needed for other handheld devices. Furthermore, this design also allows for the configuration of a complete set of nozzle accessories, in which multiple adapter portions, multiple nozzle portions, and multiple sealing portions can be provided, which can then be connected to each other in a manner that is arbitrary and freely selectable. Therefore, optimal nozzle accessories for various cleaning purposes can be constructed by combining the aforementioned parts.

[0044] Advantageously, the nozzle portion defines a nozzle fluid passage that is fluidly connected to at least one fluid outlet, and the sealing portion defines a sealing suction passage that is fluidly connected to a suction channel inlet. This design particularly enables the guidance of cleaning fluid through the nozzle fluid passage to at least one fluid outlet, and the delivery of waste fluid through the suction channel inlet and the sealing suction channel to the handheld device, and from the handheld device, for example, via a cleaning equipment hose, to the cleaning equipment.

[0045] Preferably, the nozzle portion and the sealing portion are configured to be detachably connected to each other. They can then be selectively connected to each other and combined in different designs to form nozzle attachments. They can then be manipulated together, for example, for connection with a handheld component or an adapter.

[0046] Advantageously, the nozzle portion and the adapter portion are configured to be detachably connected to each other. This particularly enables the nozzle portion to be detached from the adapter portion and replaced with another nozzle portion. It is also possible, for example, to couple the same nozzle portion with different adapter portions when the nozzle portion is to be used in conjunction with different cleaning devices.

[0047] When the nozzle portion includes a carrier element, the nozzle attachment can be constructed to be particularly compact.

[0048] Preferably, the sealing portion includes a sealing element. In particular, the sealing portion may therefore also include a sealing element carrier and a sealing element. This allows for a compact structure for the nozzle accessory.

[0049] Advantageously, the nozzle accessory includes a first coupling device for detachably connecting the nozzle portion and the adapter portion to each other. This first coupling device allows the nozzle portion and the adapter portion to be connected to each other and also to be detached from each other again.

[0050] If the first coupling device includes first and second coupling elements arranged or constructed on the nozzle portion on one side and on the adapter portion on the other side, and if the first and second coupling elements are engaged in a force-locked and / or form-locked manner in the coupling position and disengaged in the disengaged position, then the nozzle portion and the adapter portion can be easily connected to each other and separated from each other again.

[0051] When the first coupling device is configured as a first bayonet connection device, the nozzle attachment can be operated in a simple manner. For example, the nozzle portion can be fitted onto the adapter portion in a direction parallel to the longitudinal axis of the nozzle suction channel, and then connected to the adapter portion in a known manner by rotational movement about the longitudinal axis of the nozzle suction channel. Especially in the end position, clamping of the nozzle portion and the adapter portion relative to each other can be achieved.

[0052] Advantageously, the sealing part and the adapter part are configured to connect to each other in a detachable manner. Therefore, it is particularly possible to detach the sealing part from the adapter part and replace it with another sealing part, depending on the cleaning task.

[0053] If the nozzle accessory includes a second coupling device for detachably connecting the sealing portion and the adapter portion to each other, the sealing portion and the adapter portion can be detachably connected to each other in a simple manner.

[0054] If the second coupling device includes third and fourth coupling elements arranged or constructed on the nozzle portion on one hand and on the adapter portion on the other hand, and if the third and fourth coupling elements are engaged in a force-locking and / or form-locking manner in the coupling position and disengaged in the disengaged position, then the nozzle accessory can be constructed in a simple manner.

[0055] Advantageous for manipulating the nozzle attachment is that the second coupling device is configured as a second bayonet connection. This second bayonet connection allows for simple mutual coupling of the sealing and fitting parts, much like the first bayonet connection, specifically by moving them closer together in a direction parallel to the longitudinal axis of the nozzle suction channel, and subsequently twisting them relative to each other by movement about the longitudinal axis of the nozzle suction channel. A particular advantage of bayonet connections is that they can be used for optimal locking in a direction parallel to the longitudinal axis defined by them. The mutual coupling elements of the bayonet connection can only be separated when the mutually engaged coupling elements first undergo relative torsional movement about the longitudinal axis of the bayonet connection.

[0056] Advantageously, the adapter portion includes a first adapter portion end and a second adapter portion end, wherein the first adapter portion end is detachably connected to the handheld component, and the second adapter portion end is configured to detachably connect to the nozzle portion and / or the sealing portion. By providing corresponding adapter portions, it is particularly possible to couple the nozzle portion and the sealing portion to different handheld components. For this purpose, only different adapter portions need to be provided.

[0057] Advantageously, the end of the first adapter portion defines a longitudinal axis of the first adapter portion, the end of the second adapter portion defines a longitudinal axis of the second adapter portion, and the longitudinal axes of the first and second adapter portions form an adapter portion angle having a value in the range of approximately 180° to 90°. In particular, the adapter portion angle can have a value of approximately 135°. A 180° adapter portion angle corresponds to a straight-extending adapter portion. An approximately 135° adapter portion angle corresponds to a bend with a corresponding inner angle between the ends of the two adapter portions.

[0058] Advantageously, the adapter portion defines an adapter portion suction channel and an adapter portion fluid channel, which are fluidly separated from each other. In a first coupling position, the adapter portion fluid channel is fluidly connected to the nozzle portion fluid channel, and in a second coupling position, the adapter portion suction channel is fluidly connected to the sealing portion suction channel. This design particularly enables the delivery of cleaning fluid through the adapter portion in a manner fluidly separated from the suction flow received through the suction channel inlet, to at least one fluid outlet.

[0059] Depending on the cleaning task to be addressed, it is advantageous that the edge of the sealing element defines the suction channel inlet and is elliptical, circular, polygonal, and especially triangular, quadrilateral, or pentagonal in shape. The profile or shape of the sealing element edge can, in particular, match the shape or profile of at least one cleaning element. For example, the distance between the sealing element edge and at least one cleaning element can be the same on all sides, i.e., in a plane perpendicular to the longitudinal axis of the nozzle channel. Therefore, the profile of the sealing element edge can be predetermined, which is geometrically similar to at least one cleaning element.

[0060] In order to achieve sufficient stability of the nozzle attachment, it is advantageous that the bearing element is configured to be stable in shape or substantially stable in shape.

[0061] According to another preferred embodiment, the profile of the suction channel inlet can be geometrically similar to the profile of the cleaning element defined by at least one cleaning element. As already described, this can therefore specifically form a suction region that is defined on one hand by a sealing element and on the other hand by at least one cleaning element, and has a constant spacing between the at least one cleaning element and the sealing element.

[0062] Preferably, at least one cleaning element is configured to be fluid-permeable. This particularly enables the thorough wetting of at least one cleaning element by the cleaning fluid. Therefore, surface cleaning can be improved because at least one cleaning element can move wetly on the surface to loosen dirt and remove it through mechanical processing.

[0063] Advantageously, at least one cleaning element is self-closed and annularly configured to surround the fluid outlet. Therefore, it is particularly possible to limit the fluid outlet region with at least one cleaning element. For example, at least one cleaning element can also separate the suction region of the nozzle accessory from the fluid outlet region in this way.

[0064] For example, in order to clean smooth and rough surfaces, it is advantageous that at least one cleaning element is brush-shaped and includes multiple bristles and / or bristle bundles.

[0065] Preferably, at least one cleaning element is configured as a ring brush, having at least one self-closing annular bristle loop. The ring brush may also include two, three, or more bristle loops. This allows for the mechanical treatment of large areas.

[0066] Advantageously, at least one cleaning element is configured as a seam brush having a bristle array comprising multiple bristles. This bristle array is particularly useful for cleaning seams that extend in a straight line.

[0067] For cleaning especially smooth surfaces, it is advantageous that at least one cleaning element is configured as a scraping element with a scraping edge pointing towards the distal end. For example, a nozzle attachment configured in this way can be used to clean glass surfaces, such as glass surfaces also in the form of glass-ceramic cooktops, especially for removing burnt food residue from glass-ceramic cooktops. The scraping element can particularly be configured as a scraper with a sharp edge or blade.

[0068] Preferably, the carrier element is configured in a sleeve shape and includes a carrier element fluid channel that is fluidly connected to at least one fluid outlet. Therefore, cleaning fluid can be guided through the carrier element to at least one fluid outlet.

[0069] For optimal cleaning results, it is advantageous 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, particularly in the range of about 1 / 100 to about 1 / 50.

[0070] Advantageously, at least one cleaning element has a cleaning element end face on its distal side, and this cleaning element end face defines an end face plane that extends transversely to, and in particular perpendicularly to, the longitudinal axis of the nozzle suction channel of the nozzle attachment. Therefore, the nozzle attachment can be positioned on a flat surface to be cleaned with at least one cleaning element face.

[0071] Preferably, the end faces of the cleaning element are defined by distally pointing end faces of the free ends of a plurality of bristles. These end faces can be specifically configured and define a plane. Therefore, flat surfaces can be cleaned well.

[0072] Advantageously, the edge plane and the end face plane extend parallel to each other, with the end face plane extending distally from the edge plane. Therefore, it is particularly possible to have at least one cleaning element protrude distally beyond the free end of the sealing element.

[0073] Advantageously, the edge plane and the end face plane are spaced apart from each other, and this spacing has a value in the range of about 0.5 mm to about 3 mm. In particular, this spacing can have a value of about 1 mm. Therefore, it can be particularly ensured that the distal end of at least one cleaning element has sufficient protrusion beyond the edge plane.

[0074] When the nozzle accessory, especially at least one cleaning element and / or at least one fluid outlet and / or load-bearing element and / or sealing element, is made of plastic, the nozzle accessory can be constructed simply and cost-effectively. In particular, all parts of the nozzle accessory can be manufactured by injection molding.

[0075] Furthermore, the task proposed at the beginning is also solved according to the present invention in suction nozzles of the type described at the beginning by means that the nozzle attachment is configured in the form of one of the aforementioned nozzle attachments.

[0076] The suction nozzle equipped with this nozzle attachment thus has particularly the advantages described above in conjunction with the preferred embodiments of the nozzle attachment.

[0077] Advantageously, the handpiece and nozzle attachment are configured to be detachably connected to each other. This particularly allows the handpiece to be coupled to different nozzle attachments depending on the cleaning task to be addressed.

[0078] Furthermore, it is advantageous that the handpiece and the adapter are configured to be detachably connected to each other. As already mentioned, the nozzle portion and / or sealing portion can therefore be coupled to different handpieces via different adapter portions.

[0079] The task presented at the beginning is also solved according to the invention in the type of cleaning equipment hose described at the beginning by the suction nozzle being configured in one of the aforementioned advantageous suction nozzles.

[0080] The cleaning equipment hose thus equipped also has the advantages described above in the preferred embodiment combined with the suction nozzle.

[0081] Advantageously, the end of the second hose suction channel is fluidly connected or can be connected to the suction port of the cleaning equipment, and the end of the second hose fluid channel is fluidly connected or can be connected to the fluid port of the cleaning equipment. In particular, this allows for the transport of cleaning fluid from the cleaning equipment to the nozzle attachment via the cleaning equipment hose, and also allows for the suction of waste fluid by the nozzle attachment and its guidance through the cleaning equipment hose to the cleaning equipment.

[0082] The task proposed at the beginning is also solved according to the present invention in cleaning equipment of the type described at the beginning, namely, the cleaning equipment hose is configured in the form of one of the aforementioned cleaning equipment hoses.

[0083] The cleaning device thus has the advantages described above in conjunction with the preferred embodiment of the cleaning device hose.

[0084] Advantageously, the cleaning equipment includes a control device for controlling the delivery device to enable and disable fluid delivery. One design particularly enables the delivery of cleaning fluid to the surface to be cleaned only through at least one fluid outlet when truly desired. Attached Figure Description

[0085] The following description of preferred embodiments of the present invention is intended to be explained in more detail in conjunction with the accompanying drawings. Wherein: Figure 1 : A schematic perspective, partially revealed overall view of one embodiment of the cleaning equipment; Figure 2 : A schematic diagram illustrating one embodiment of the cleaning equipment is shown; Figure 3 This diagram illustrates a portion of the cleaning equipment hose along with the suction nozzle during shoe cleaning. Figure 4 It shows Figure 3 A perspective view of the handheld component and the removed nozzle attachment; Figure 5 It shows the path along the Figure 4Sectional view of line 5-5 in the middle; Figure 6 It shows Figure 5 A magnified partial view of the component; Figure 7 An enlarged perspective view of one embodiment of the nozzle attachment is shown; Figure 8 It shows Figure 7 Another perspective of the component; Figure 9 It shows Figure 7 An exploded view of the components; Figure 10 It shows Figure 9 A partial exploded view of the component on the right; Figure 11 It shows Figure 7 A longitudinal sectional view of the component; Figure 12 : Shows perpendicular to Figure 11 A sectional view of a sectional view; Figure 13 It shows that in Figure 10 An enlarged view of the load-bearing element shown on the left; Figure 14 It shows the path along the Figure 13 Sectional view of line 14-14 in the middle; Figure 15 It shows Figure 7 A longitudinal sectional view of the component; Figure 16 It shows the path along the Figure 11 Sectional view of line 16-16 in the middle; Figure 17 It shows the path along the Figure 11 Sectional view of line 17-17 in the middle; Figure 18 : A schematic perspective view showing another embodiment of the nozzle attachment; Figure 19 It shows Figure 18 Another perspective of the component; Figure 20 It shows Figure 18 A longitudinal sectional view of the component; Figure 21 It shows Figure 18 The components are perpendicular to Figure 20 A sectional view in the plane of a sectional view; Figure 22 It shows Figure 18 A perspective view of the supporting elements of the component; Figure 23 It shows the path along the Figure 22Sectional view of line 23-23 in the middle; Figure 24 : A schematic perspective view showing another embodiment of the nozzle attachment; Figure 25 It shows Figure 24 Another perspective of the component; Figure 26 It shows Figure 24 A longitudinal sectional view of the component; Figure 27 It shows Figure 24 A perspective view of the supporting elements of the component from the front; Figure 28 It shows the path along the Figure 27 Sectional view of line 28-28 in the middle; Figure 29 : A schematic perspective view showing another embodiment of the nozzle attachment; Figure 30 It shows Figure 29 Another perspective of the component; Figure 31 It shows Figure 29 A longitudinal sectional view of the component; Figure 32 It shows Figure 29 A perspective view of the supporting elements of the component from the front; Figure 33 It shows the path along the Figure 32 Sectional view of line 33-33 in the middle; Figure 34 It shows the path along the Figure 32 Sectional view of line 34-34 in the middle; Figure 35 : A schematic perspective view showing another embodiment of the nozzle attachment; Figure 36 It shows Figure 35 Another perspective of the component; Figure 37 It shows Figure 35 A longitudinal sectional view of the component; Figure 38 It shows Figure 35 The view of the supporting elements of the component from the front; Figure 39 It shows the path along the Figure 38 Sectional view of line 39-39 in the middle; Figure 40 : A schematic perspective view showing another embodiment of the nozzle attachment; Figure 41 It shows Figure 40 Another perspective of the component; Figure 42 It shows Figure 40 A longitudinal sectional view of the component; Figure 43 It shows Figure 40 A perspective view of the supporting elements of the component from the front; Figure 44 It shows the path along the Figure 43 Sectional view of line 44-44 in the middle; Figure 45 It shows the relationship with Figure 3 The view of the components is a schematic perspective view of an embodiment of a cleaning hose, along with an alternative handpiece; Figure 46 It shows the path along the Figure 45 Sectional view of line 46-46 in the middle; Figure 47 It shows Figure 45 A perspective view of the nozzle attachment of the component; Figure 48 It shows Figure 47 A longitudinal sectional view of the component; Figure 49 : A perspective view showing another embodiment of the nozzle attachment; Figure 50 It shows Figure 49 A longitudinal sectional view of the component; Figure 51 : A perspective view showing another embodiment of the nozzle attachment; Figure 52 It shows Figure 51 A longitudinal sectional view of the component; Figure 53 : A perspective view showing another embodiment of the nozzle attachment; Figure 54 It shows Figure 53 A longitudinal sectional view of the component; Figure 55 : A perspective view showing another embodiment of the nozzle attachment; Figure 56 It shows Figure 55 A longitudinal sectional view of the component; Figure 57 A perspective view showing another embodiment of the nozzle attachment is illustrated; and Figure 58 It shows Figure 57 A longitudinal section view of the component. Detailed Implementation

[0086] exist Figure 1An embodiment of a cleaning device, generally labeled 10, is schematically shown in the figure. The cleaning device is configured in the form of a spray extraction device 12.

[0087] Figure 1 The structure of the cleaning equipment 10 is in Figure 27 It is shown schematically in the middle.

[0088] A suction device 16 and a conveying device 18 are arranged in the housing 14 of the cleaning device 10. The suction device 16 is fluidly connected to a suction port 20 on the housing 14. The conveying device 18 is fluidly connected to a cleaning fluid port 22 on the housing 14. A cleaning fluid container 24 is arranged in the housing 14, which is configured to hold a cleaning fluid, such as water. The cleaning fluid container 24 is fluidly connected to the conveying device 18 in a manner not shown, so that the cleaning fluid can be conveyed from the cleaning fluid container 24 to the cleaning fluid port 22 by means of the conveying device 18.

[0089] The housing 14 also houses a waste flow container 26, which is fluidly connected to the suction device 16. The suction device 16 is configured to transport waste flow from the suction port 20 into the waste flow container 26.

[0090] The cleaning device 10 also includes a cleaning device hose 28, which is configured to connect or be able to connect to both the suction port 20 and the cleaning fluid port 22.

[0091] The cleaning equipment hose 28 includes a hose suction channel 30 having a first hose suction channel end 32 and a second hose suction channel end 34. The cleaning equipment hose 28 also includes a hose fluid channel 36 having a first hose fluid channel end 38 and a second hose fluid channel end 40.

[0092] The cleaning equipment hose 28 includes an external suction hose 42 that surrounds or defines the hose suction passage 30. A hose fluid passage 36 is defined by a fluid hose 44 that is guided through the suction hose 42 and thus through the hose suction passage 30.

[0093] The cleaning device 10 also includes a suction nozzle 46 having a handheld part 48 and a nozzle attachment 50.

[0094] A valve device 52 for opening or closing a handpiece fluid passage 54 extending through the handpiece 48 is arranged on the handpiece 48. Furthermore, a handpiece suction passage 56 extends through the handpiece 48. The proximal end of the handpiece fluid passage 54 is fluidly connected to or can be connected to the end 38 of the first hose fluid passage. The proximal end of the handpiece suction passage 56 is connected to or can be connected to the end 32 of the first hose suction passage.

[0095] The handpiece 48 and the nozzle attachment 50 are selectively configured to be permanently and fixedly connected to each other or alternatively to be detachably connected.

[0096] In an embodiment, the nozzle attachment 50 is arranged or configured on the handpiece 48 to be either rotatable or non-rotatable.

[0097] The cleaning equipment hose 28 is configured such that the second hose suction channel end 34 is fluidly connected or can be connected to the suction port 20 of the cleaning equipment, and the second hose fluid channel end 40 is fluidly connected or can be connected to the cleaning fluid port 22 of the cleaning equipment 10.

[0098] Figure 1 The cleaning equipment 10 shown schematically can operate without relying on the power grid. For this purpose, a rechargeable battery 58 is provided. This rechargeable battery supplies power to all electrical components of the cleaning equipment 10. Alternatively or additionally, a power grid connection device may be provided.

[0099] Figure 3 It shows in Figure 1 The handheld component 48 of the cleaning device 10, along with the fitted nozzle attachment 50, is schematically shown when cleaning a shoe 60. Figures 3 to 6 In the diagram and in all other drawings, combinations are used to label identical and functionally similar components. Figure 1 and Figure 2 The reference numerals used in the accompanying drawings.

[0100] The nozzle accessory 50 includes an adapter portion 62 for connection with the handheld component 48, a sealing portion 64, and a nozzle portion 66. Therefore, the nozzle accessory 50 is configured as a multi-piece assembly. In the described embodiment, both the nozzle portion 66 and the sealing portion 64 are configured to be directly and detachably connected to the adapter portion 62.

[0101] The handheld device 48 includes an operating device 68 for activating or deactivating the delivery device 18 to deliver cleaning fluid to the handheld device 48 via the fluid hose 44. The adapter portion 62 is fluidly coupled to the distal end of the handheld device 48 via the connecting device 70. The adapter portion 62 includes an adapter portion suction channel 72 and an adapter portion fluid channel 74, the adapter portion suction channel being connected to the handheld device suction channel 56 and the adapter portion fluid channel being connected to the handheld device fluid channel 54 in a manner similar to... Figure 3 , Figure 5 and Figure 6 The connection points shown schematically are connected in terms of fluid action. The suction channel 72 and the fluid channel 74 of the adapter portion are separated from each other in terms of fluid action.

[0102] The adapter portion 62 has a first adapter portion end 76 and a second adapter portion end 78. The first adapter portion end 76 can be detachably connected to the handheld member 48. The second adapter portion end 78 is configured to be detachably connected to the nozzle portion 66 and the sealing portion 64.

[0103] The first adapter portion end 76 defines a first adapter portion longitudinal axis 80. The second adapter portion end 78 defines a second adapter portion longitudinal axis 82. The first adapter portion longitudinal axis 80 and the second adapter portion longitudinal axis 82 form an adapter portion angle 84. This adapter portion angle has a value in the range of approximately 180° to 90°. Figure 5 and Figure 6 In the embodiment shown, the value of angle 84 of the adapter portion is 180°. Therefore, the longitudinal axes 80 and 82 of the adapter portion coincide.

[0104] The structure of nozzle attachment 50 is described below. Figures 7 to 17 To elaborate further.

[0105] Figure 9 An adapter portion 62 coupled to the nozzle portion 66 is shown as an example.

[0106] Sealing part 64 in Figure 9 The figure is shown in exploded view. The sealing portion includes a sealing element carrier 86 on which a sealing element 88 is disposed or constructed. The sealing element 88 is made of a soft plastic material and is connected to the sealing element carrier 86 by force-locking and / or form-locking and / or material-locking. In the embodiment shown in the figure, the sealing element 88 is injection-molded onto the sealing element carrier 86.

[0107] The sealing element carrier 86 is stably shaped.

[0108] In addition, the sealing element carrier 86 is constructed in the form of a sleeve.

[0109] The nozzle accessory 50 includes a nozzle suction channel 90 and a nozzle fluid channel 92 that is fluid-dependent from the nozzle suction channel. The nozzle fluid channel 92 is fluid-dependently connected to the adapter fluid channel 74. The nozzle suction channel 90 is fluid-dependently connected to the adapter suction channel 72.

[0110] The nozzle fluid passage 92 is fluidically connected to two fluid outlets 94 on its distal side. The nozzle fluid passage is used to apply cleaning fluid. The nozzle suction passage 90 defines a suction passage inlet 96 on its distal side for receiving waste fluid.

[0111] A cleaning element 98 is also arranged or constructed on the nozzle attachment 50, or more precisely, it is arranged or constructed on the support element 100. In addition, two fluid outlets 94 are also arranged or constructed on the support element 100.

[0112] The distal end of the fluid passage 74 is sealed relative to the carrier element 100 and therefore also relative to the nozzle 118 via a sealing element in the form of an annular seal 208.

[0113] The two fluid outlets 94 and the load-bearing element 100 are integrated, that is, integrally formed.

[0114] The cleaning element 98 is configured as a brush and includes a plurality of bristles 102, which are received as bristle bundles 104 in a recess 106 provided for this purpose in the carrier element 100.

[0115] exist Figures 7 to 17 In one embodiment, the cleaning element 98 is configured as a seam brush 108 and includes a plurality of bristle bundles 104 arranged in the form of bristle rows 110.

[0116] The nozzle suction channel 90 defines the longitudinal axis 112 of the nozzle suction channel. For example, especially in Figure 13 As can be clearly seen, the nozzle attachment 50 is configured to be mirror-symmetrical or substantially mirror-symmetrical with respect to two mutually perpendicular mirror planes 114 and 116 that contain the longitudinal axis 112 of the nozzle suction channel. The mirror plane 116 is oriented such that the bristle row 110 extends in the mirror plane 116. The mirror plane 114 extends perpendicular to the mirror plane.

[0117] Two fluid outlets 94 are configured in the form of nozzles 118. In this embodiment, nozzles 118 are configured in the form of fan-shaped nozzles 120. Fan-shaped jets can be generated using these fan-shaped nozzles.

[0118] In the illustrated embodiment, the two fluid outlets 94 are partially directed toward the cleaning element 98 so that the cleaning element can thus be wetted by the cleaning fluid.

[0119] In this embodiment, the cleaning element 98 defines a cleaning element plane 122. The fluid outlet 94 is configured to generate a cleaning fluid jet 124, as exemplarily and schematically shown in… Figure 11 As illustrated in the diagram. The cleaning fluid jet defines a jet plane 126, which is angled at an angle 128 to the cleaning element plane 122. The angle 128 has a value in the range of about 0° to about 30°.

[0120] As already described, the sealing element 88 extends distally from the sealing element carrier 86 and defines the suction channel inlet 96. The cleaning element 98 protrudes slightly beyond the sealing element 88 on the distal side and in a distal direction.

[0121] The sealing element 88 is configured to be deformable, that is, configured to be flexible or elastic. The sealing element is formed in the form of a sealing lip 130.

[0122] like Figure 9 As can be clearly seen, the sealing element 88 is sleeve-shaped and extends parallel to the longitudinal axis 112 of the nozzle suction channel of the nozzle accessory 50.

[0123] like Figure 11 As can be clearly seen, the sealing element 88 is arranged or configured to protrude beyond the distal end 134 of the sealing element carrier 86 on the distal side.

[0124] The sealing element 88 defines the self-closing boundary of the suction channel inlet 96.

[0125] Sealing element 88 defines a sealing element edge 136 on the distal side. Cleaning element 98 defines a cleaning element end 138 on the distal side. (Especially in...) Figure 12 As can be clearly seen, the cleaning element end 138 protrudes beyond the sealing element edge 136 on the distal side.

[0126] In the embodiment shown in the figure, the sealing element edge 136 defines an edge plane 140. The edge plane 140 extends laterally, i.e., perpendicularly to the longitudinal axis 112 of the nozzle suction channel.

[0127] The sealing element 88 has a constant cross-section extending from the distal end 134 of the sealing element carrier 86. The shape of the sealing element 88 is chosen such that it remains constant along the sealing element segment 142 in the direction from the sealing element edge 136 toward the sealing element carrier 86. The distal end 134 of the sealing element carrier 86 defines an end profile that corresponds to or substantially corresponds to the shape of the sealing element edge 136.

[0128] The sealing element 88 initially has a constant cross-section from its proximal end 144 toward its distal end, but then its cross-section gradually decreases toward its distal end 134 of the sealing element carrier 86. Therefore, it also has a cross-section that gradually decreases from the sealing element carrier 86.

[0129] The sealing element carrier 86 has a maximum diameter at its proximal end 146, which then remains constant for approximately 3 / 4 of the length of the sealing element carrier 86 parallel to the longitudinal axis 112 of the nozzle suction channel, and then gradually decreases in the cross-section toward the sealing element edge 136, more specifically up to the distal end 134.

[0130] Furthermore, the cross-sectional shape of the sealing element 88 changes from the sealing element carrier 86 toward the sealing element edge 136. In the proximal end region 144, the cross-sectional shape of the sealing element 88 is circular. In the region of the sealing element edge 136, the cross-sectional shape of the sealing element 88 is an elongated rectangle with rounded corners.

[0131] The sealing element carrier 86 has a circular cross-section at its proximal end 146. The inner diameter of the sealing element carrier 86 in the proximal end 146 region corresponds to the outer diameter of the distal end region 148 of the adapter portion 62, thereby causing the sealing portion 64, as particularly in Figure 11 As shown, it can be pushed onto the adapter portion 62 in a direction parallel to the longitudinal axis 112 of the nozzle suction channel until it abuts against the annular surface 150 pointing toward the distal end on the adapter portion, the annular surface being connected to the distal end region 148 on the proximal side.

[0132] The sealing element 88 extends from the distal end 134 of the sealing element carrier 86 and has a free sealing element length 152 parallel to the longitudinal axis 112 of the nozzle suction channel. The cleaning element 98 extends from the distal end 154 of the carrier element 100 and has a free cleaning element length 156 parallel to the longitudinal axis 112 of the nozzle suction channel. In the illustrated embodiment, the cleaning element length 156 is greater than the sealing element length 152.

[0133] The nozzle portion 66 defines a nozzle portion fluid passage 158, which is fluidly connected to the fluid outlet 94.

[0134] The sealing portion 64 defines a sealing portion suction channel 160, which is fluidly connected to the suction channel inlet 96.

[0135] The nozzle portion 66 and the adapter portion 62 are configured to be connected to each other in a detachable manner.

[0136] The nozzle portion 55 includes a carrier element 100.

[0137] The sealing portion 64 includes a sealing element 88.

[0138] The nozzle accessory 50 includes a first coupling device 162 for detachably connecting the nozzle portion 66 and the adapter portion 62 to each other. Figure 17 A cross-sectional view through the first coupling device 162 is shown.

[0139] The first coupling device 162 includes first and second coupling elements 164 and 166, which are disposed or constructed on the nozzle portion 66 on one hand and on the adapter portion 62 on the other hand. The first and second coupling elements 164 and 166 are arranged in a manner such as... Figure 15 The coupling positions shown in the example are in a state of mutual interlocking. Figure 10 In the schematically shown separation position, they are disengaged.

[0140] The first coupling device 162 is configured as a first bayonet connection device 168. The first coupling element 164 is configured as an L-shaped recess on the inner wall of the sleeve-shaped support element 100, extending from the proximal end of the support element. They have a first section that opens proximally parallel to the longitudinal axis 112 of the nozzle suction channel and a second section that extends circumferentially relative to the longitudinal axis 112 of the nozzle suction channel.

[0141] The second coupling element 166 is configured as a protrusion extending radially onto the adapter portion 62. Figure 17 The diagram shows the fitting position of the nozzle portion 66 onto the adapter portion 62. For locking, i.e., for coupling in the coupling position, it is necessary to... Figure 17 As exemplarily shown, the adapter portion 62 is twisted relative to the nozzle portion 66 in the direction of arrow 170 so as to introduce the second coupling element into the first coupling element 164 in the circumferential direction.

[0142] The sealing portion 64 and the adapter portion 62 are also configured to be detachably connected to each other. For this purpose, the nozzle accessory 50 includes a second coupling device 172 for detachably connecting them to each other.

[0143] The second coupling device 172 includes third and fourth coupling elements 174 and 176, which are arranged or constructed on the nozzle portion 66 on one hand and on the adapter portion 62 on the other. The third and fourth coupling elements 174 and 176 are also... Figure 16 The coupling positions shown in the schematic diagram are engaged by force locking and form locking.

[0144] exist Figure 9 In the schematically shown separation position, the third and fourth coupling elements 174 and 176 are disengaged.

[0145] The second coupling device 172 is configured as a second bayonet connection device 178. A fourth coupling element extends from the distal end region 148 in a radial direction relative to the longitudinal axis 112 of the nozzle suction channel from the adapter portion 62. A third coupling element 174, similar to the first coupling element 164, is constructed as an L-shaped recess within the inner wall of the circular end section of the sealing element carrier 86. A first section of the third coupling element 174 extends parallel to the longitudinal axis 112 of the nozzle suction channel, originating from the proximal end 146. Following the first section is a short section extending in a circumferential direction relative to the longitudinal axis 112 of the nozzle suction channel. (The text repeats itself here.) Figure 16 As schematically shown, two fourth coupling elements 176, which are protrusions extending radially from the adapter portion 62, are embedded in the circumferentially extending section of the third coupling element 174.

[0146] In the illustrated embodiment, a total of four third coupling elements 174 are provided, which are uniformly constructed on the circumference of the sealing element carrier 86 relative to the longitudinal axis 112 of the nozzle suction channel. Four first coupling elements 164 are constructed on the nozzle portion 66, i.e., on the carrier element 100.

[0147] As already described, the sealing element edge 136 has a generally quadrilateral, i.e. rectangular shape, of the limiting suction channel inlet 96.

[0148] The carrier element 100 is formed in a shape that is stable or substantially stable, similar to the sealing element carrier 86. The carrier element is injection molded from plastic and integrally formed.

[0149] like Figure 8 As can be clearly seen, the profile of the suction channel inlet 96 is geometrically similar to the profile of the cleaning element defined by the cleaning element 98.

[0150] The cleaning element 98 is configured to be fluid-permeable. The cleaning fluid can penetrate the bristles 102, or enter the gaps between the bristles 102 or the bristle bundles 104.

[0151] like Figure 16 As can be clearly seen, the carrier element 100 is constructed in a sleeve shape and defines a carrier element fluid channel 180, which is connected to the fluid outlet 94 in fluid action.

[0152] Fluid outlet 94 defines a free fluid outlet cross-section. Suction channel inlet 96 defines a free suction channel inlet cross-section. 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, the ratio of the cross-sectional areas can be in the range of about 1 / 100 to about 1 / 50.

[0153] The cleaning element 98 has a cleaning element end face 182 on the distal side. The cleaning element end face 182 defines an end face plane 184 that extends transversely to, i.e. perpendicularly to, the longitudinal axis 112 of the nozzle suction channel.

[0154] In the illustrated embodiment, the cleaning element end face 182 is defined by the distal end face of the free ends of a plurality of bristles 102.

[0155] Edge plane 140 and end plane 184, as Figure 5 As exemplarily shown, they extend parallel to each other. The end face plane 184 extends on the distal side of the edge plane 140.

[0156] The edge plane 140 and the end face plane 184 are spaced 186 apart from each other, the spacing having a value in the range of about 0.5 mm to about 3 mm. In particular, the spacing 186 is about 1 mm.

[0157] The nozzle accessories are made entirely of plastic. The cleaning element 98, the fluid outlet 94, or the nozzle 118 that forms them, the carrier element 100, and the sealing element 88 are all made of plastic. As described, some of these components are shape-stable, while others are flexible.

[0158] To control the delivery device 18 to enable and disable fluid delivery, the cleaning equipment 10 includes a control device 188, such as... Figure 2 As illustrated in the diagram.

[0159] exist Figures 18 to 44 Further embodiments of the nozzle attachment are schematically illustrated and labeled with reference numeral 50. These further embodiments of the nozzle attachment 50 are combined with the above description. Figures 7 to 17 The differences in the described embodiments lie in the design of the cleaning element 98 and the shape or contour of the sealing element 88, or rather, the sealing element edge 136. To indicate the same or similar, or functionally similar, components and parts of the nozzle attachment 50, the same references are used in all the additionally described embodiments. Figures 7 to 17 The same reference numerals are used in the embodiments.

[0160] In other embodiments of the nozzle attachment 50, the cleaning element 98 is configured in the form of a round brush 194 having one or two bristle rings, or in the form of a scraper 190 having a sharp blade 192.

[0161] exist Figures 18 to 23 Another embodiment of the nozzle attachment 50 is illustrated by way of example. It is related to... Figures 7 to 17 The difference in the embodiments lies particularly in the design of the sealing element 88, which is sleeve-shaped and defines an annular sealing element edge 136. Two fluid outlets 94 are arranged or constructed at the center of the nozzle portion 66 and surrounded by a plurality of annularly arranged bristles 102, which thus form a distally protruding bristle ring for constituting a circular brush 194. The sealing element 88 surrounds the bristle ring or bristle loop and is concentrically configured with respect to the longitudinal axis 112 of the nozzle suction channel.

[0162] The bristles 102 are housed in recesses 106 on the support element 100. These recesses are configured as blind holes that open toward the ground in a distal direction.

[0163] Another embodiment of the nozzle attachment 50 is exemplarily described in Figures 24 to 28 As shown in the figure. This embodiment is configured to be similar to... Figures 18 to 23 The embodiments are almost identical, so the description above can be used as a reference in its entirety.

[0164] According to Figures 24 to 28 In an embodiment of the nozzle attachment 50, the two fluid outlets 94 are spaced slightly apart from each other and configured to be slightly wider. This allows for the application of more cleaning fluid with a wider jet, and in particular, better wetting of the bristles 102.

[0165] exist Figures 7 to 28 In one embodiment, the fluid outlet 94 is integrally constructed on the carrier element 100.

[0166] Another embodiment of the nozzle attachment 50 is in Figures 29 to 34 As shown in the figure, it is related to Figures 24 to 28 The implementation is very similar. However, it is similar to... Figures 24 to 28 The difference in this embodiment is that the nozzle 118 and the carrier element 100 are constructed independently of each other. This allows the nozzle 118 to be made of a different material than the carrier element 100. For example, the nozzle 118 can therefore be made of a metal material, and the carrier element 100 can be made of plastic.

[0167] A distally oriented contact surface 210 is formed on the nozzle 118, and a proximally oriented contact surface 212 is formed on the support element 100, which is in contact with the contact surface 210. The contact surfaces 210 and 212 are formed in the form of annular surfaces and extend in a plane transverse to the longitudinal axis 112 of the nozzle suction channel. The support element 100 and nozzle 118 may optionally be connected to each other in a material-locking manner using an adhesive introduced between the contact surfaces 210 and 212, and thus also seal each other relative to each other in fluid action.

[0168] According to Figures 29 to 34 The nozzle 118 in the nozzle attachment 50 of the embodiment includes a single fluid outlet 94 that forms a fan-shaped nozzle 120. To avoid repetition, the remaining structure of the embodiment of the nozzle attachment 50 is described above.

[0169] exist Figures 35 to 39 Another embodiment of the nozzle attachment 50 is illustrated by way of example. It is very similar in structure to... Figures 29 to 34 An embodiment of the invention. In particular, it includes, in a similar manner, a nozzle 118 configured independently of the carrier element 100.

[0170] Figures 35 to 39 Implementation examples and Figures 29 to 34 The difference in the embodiments lies particularly in the size of the support element 100. This support element has a slightly larger diameter to accommodate two rings formed by a plurality of bristles 102. Here, the longitudinal axis of the bristles 102 also extends distally from the support element 100, parallel to the longitudinal axis 112 of the nozzle suction channel. In this way, a circular brush 194 with bristles 102 can be constructed, having two self-closing, annular rows of bristles 110.

[0171] In this embodiment, the fluid outlet 94 is also configured as a fan-shaped nozzle 120.

[0172] To accommodate the larger carrier element 100, and still form a suction channel inlet 96 that annularly surrounds the carrier element 100 with a sufficiently large free cross-section, the sealing element carrier 86 is slightly enlarged in inner diameter toward the distal end, more precisely in the region of the carrier element 100. The suction channel inlet 96 is constructed between the carrier element 100 and the sealing element carrier 86.

[0173] In addition, regarding the basis Figures 35 to 39 The design structure of the embodiment of the nozzle attachment 50 can be referred to the description above.

[0174] exist Figures 40 to 44 The accompanying drawing illustrates, by way of example, another embodiment of the nozzle attachment labeled 50. In terms of its structure, it is similar to... Figures 7 to 17 The embodiments are similar. However, the difference lies in the design of the cleaning element 98.

[0175] In this embodiment, the cleaning element 98 is configured as a scraper 190 having a blade 192 pointing distally. The scraper 190 is integrally formed with the carrier element 100 and protrudes distally. The cleaning element 98 defines a cleaning element plane 122 that extends parallel to the longitudinal axis 112 of the nozzle suction channel. Alternatively, the longitudinal axis 112 of the nozzle suction channel may also be located within the cleaning element plane 122.

[0176] In this embodiment, the nozzle 118 is also integrally formed with the carrier element 100, i.e., as a single unit. It includes a single fluid outlet 94, which is formed in the form of a fan-shaped nozzle 120. The fluid outlet 94 is laterally offset relative to the plane 122 of the cleaning element, so that the cleaning fluid can wet the side surface 214 of the cleaning element 98.

[0177] The inner diameter of the sealing element carrier 86 tapers at the distal end of the carrier element 100, forming a suction channel inlet that is substantially rectangular in cross-section. The distal end 134 of the sealing element carrier 86 defines a plane inclined relative to the longitudinal axis 112 of the nozzle suction channel, extending parallel to the edge plane 140 of the sealing lip 130 formed by the sealing element 88 pointing distally. The edge plane 140 is inclined at an angle ranging from 35° to 45° relative to the longitudinal axis 112 of the nozzle suction channel.

[0178] The straight-line scraping edge of the blade 192 protrudes slightly beyond the edge plane 140, so that when the nozzle attachment 50 is placed on the surface to be cleaned, the blade 192 can first make contact with the surface to be cleaned.

[0179] In all the embodiments of the nozzle attachment 50 described above, a locking device 196 is used to couple the adapter portion 60 to the handheld member 48. This locking device includes a locking element 198 supported on the outside of the adapter portion 62 in a manner pivotable about a swing axis 200 extending transversely to the longitudinal axis 112 of the nozzle suction channel. The locking element is held in a basic position by means of a compression spring 202, in which a locking hook 204 protruding from the locking element 198 engages with a corresponding locking recess 206 on the handheld member 48 when the handheld member 48 is pushed into the first adapter portion end 76 of the adapter portion 62 at its distal end. By means of the design of the locking device 196 or the connecting device 70 described and especially shown in the figure, the adapter 62 is not only locked in the handpiece 48 in the axial direction, i.e., preventing the adapter from being pulled off the handpiece 48 in the direction parallel to the longitudinal axis 112 of the nozzle suction channel, but also preventing it from twisting relative to the handpiece 48 around the longitudinal axis 112 of the nozzle suction channel.

[0180] Figure 45 and Figure 46 An alternative embodiment of the handheld component 48 is shown. In this embodiment, the adapter portion 62, as... Figure 47 and Figure 48 As can be clearly seen in the image, the fitting part bends at an angle of approximately 135° (84 degrees). For example, in... Figure 48 As schematically shown, the longitudinal axis 80 of the first adapter portion and the longitudinal axis 82 of the second adapter portion are tilted relative to each other at an adapter portion angle 84.

[0181] The adapter portion 62 can be coupled to the handpiece 48 at its first adapter portion end 76, more specifically, via a conventional, not described in detail, locking connection. The sealing portion 64 is fitted onto and coupled to the second adapter portion end 78 at its proximal end 146. A bayonet connection device 178 is provided for this purpose.

[0182] The proximal end of the fluid channel 74 of the adapter portion is connected to the adapter portion 62 in a locking manner on the sealing portion 64. For this purpose, locking lugs 216 are used, which, in the connection position, are radially outwardly engaged from the rear with an annular locking surface on the adapter portion 62 pointing towards the proximal end.

[0183] The distal end of the nozzle attachment 50 is similar to Figures 7 to 17 The embodiment is configured such that a nozzle 118 having two fluid outlets 94 is integrally formed on the carrier element 100, the nozzle pointing toward a cleaning element 98 which is in the form of a bristle row 110 comprising a plurality of bristles 102 to form a seam brush. Here, the flexible, deformable end region of the sealing element 88 also surrounds the cleaning element 98.

[0184] The cleaning element end face 182 of the bristles 102 protrudes slightly beyond the sealing lip 130 on the distal side, especially in Figure 46 As can be clearly seen, when the nozzle attachment 50 comes into contact with the surface to be cleaned, the bristles 102 first touch the surface. By pressing the nozzle attachment 50 against the surface to be cleaned, the sealing lip 130 can also come into contact with the surface to be cleaned, and seal the cleaning area defined by the sealing element edge 136 relative to the surrounding environment.

[0185] According to Figures 45 to 48 The handheld device in the embodiment is also equipped with an operating device 68 for activating or deactivating the valve device 52, so as to enable or deactivate the application of cleaning fluid from the fluid outlet 94 to the surface to be cleaned. The basic structure of the operating device 68 and the valve device 52 is similar to that of the embodiment. Figures 1 to 6 The structure of the embodiments is consistent with that of the embodiments, and thus reference can be made to the description above in this regard.

[0186] Figures 49 to 58 Further embodiments of the nozzle attachment 50 are shown, which are related to those in... Figure 45 and Figure 46 The handheld component 48 is schematically shown in the diagram. The nozzle portion 66 and sealing portion 64 of these embodiments correspond to or substantially correspond to the engagement. Figures 7 to 44 The described embodiment of the nozzle portion 66 and the sealing portion 64.

[0187] Figure 49 and Figure 50 An embodiment of the nozzle attachment 50 is shown, the design of which on the distal side is consistent with that according to... Figures 18 to 23 The design of the nozzle attachment 50 on the distal side is consistent, and therefore can be referred to the description above. The proximal end of the nozzle attachment 50, if combined... Figures 45 to 48 As described, it can be compared with... Figures 45 to 48 The adapter portion 62 of the embodiment is coupled. This also applies accordingly to the embodiments described in more detail below. Figures 51 to 58 An embodiment of the nozzle attachment 50.

[0188] Figure 51 and Figure 51 Further embodiments of the nozzle attachment 50 are shown, wherein the distal end region of the sealing portion 64 of these nozzle attachments is consistent with that according to Figures 24 to 28 The distal end region of the sealing portion 64 has the same construction, and thus can be referred to the description above.

[0189] The adapter portion 62 is coupled with its first adapter portion end 76. Figures 45 to 48As described, it can be pushed into the distal end of the handpiece 48 and connected to that distal end in a locking manner. For this purpose, a locking element 220, which is integrally formed with the adapter portion 62 and points towards the proximal end, is used. This locking element is elastically configured. When pushed into the handpiece 48, the locking element can deflect in the direction of the longitudinal axis 80 of the first adapter portion, and when embedded in the corresponding recess on the handpiece 48, it can swing away from the longitudinal axis 80 of the first adapter portion again due to the elastic design, so as to thus connect the adapter portion 62 and the handpiece 48 to each other in a locking manner.

[0190] Figure 53 and Figure 54 Another embodiment of the nozzle attachment 50 is shown. Here, the distal end region of the sealing portion 64 is... Figures 29 to 35 The embodiments are the same, and reference can be made to the description above in this regard. It is specifically noted that in this embodiment, the carrier element 100 is constructed independently of the mouth 118, which enables the two components to be made of different materials.

[0191] exist Figure 55 and Figure 56 Another embodiment of the nozzle attachment 50 is illustrated exemplarily, which can be coupled with Figures 45 to 48 The described handheld component 48 is coupled. In this embodiment, the distal end region of the sealing portion 64 is coupled with... Figures 35 to 39 The embodiments are constructed identically, and thus reference can be made in this respect to the description above. In this embodiment, the adapter portion 62 is also in conjunction with the description above and below. Figures 45 to 54 as well as Figure 57 and Figure 58 The adapter portion 62 described in the embodiments is configured identically.

[0192] Another embodiment of the nozzle attachment 50 is illustrated in Figure 57 and Figure 58 As shown in the diagram. Here, the distal end region of the sealing portion 64 is... Figures 40 to 44 The embodiment is constructed identically. Therefore, here, a scraper 190 with a blade 192 is provided on the carrier element 100 as a cleaning element 98. In this embodiment, the nozzle 118 includes a single fluid outlet 94 that points toward one of the two sides 214 of the cleaning element 98.

[0193] Using the described embodiment of the nozzle attachment 50, flat and arched surfaces can be cleaned efficiently and gently.

[0194] List of reference numerals

[0195] 10 Cleaning equipment

[0196] 12. Spraying and extraction equipment

[0197] 14. Shell

[0198] 16. Suction device

[0199] 18. Transport equipment

[0200] 20 suction ports

[0201] 22 Clean fluid interface

[0202] 24 Clean fluid containers

[0203] 26 Wastewater Containers

[0204] 28 Cleaning equipment hose

[0205] 30. Hose suction channel

[0206] 32 First hose suction channel end

[0207] 34 End of the second flexible tube suction channel

[0208] 36. Hose fluid channel

[0209] 38 First hose fluid channel end

[0210] 40 Second hose fluid channel end

[0211] 42 Suction tubing

[0212] 44 Fluid hose

[0213] 46 Suction Nozzle

[0214] 48 Handheld items

[0215] 50 Nozzle accessories

[0216] 52 Valve Device

[0217] 54 Handheld component fluid channel

[0218] 56 Handheld suction channel

[0219] 58 batteries

[0220] 60 shoes

[0221] 62 Adaptation Part

[0222] 64 Sealing section

[0223] 66. Nozzle section

[0224] 68. Control device

[0225] 70 Connecting device

[0226] 72. Fits partial suction channels

[0227] 74. Adapted to some fluid channels

[0228] 76 First adapter end

[0229] 78 Second adapter end

[0230] 80 First adapter part longitudinal axis

[0231] 82 Second adapter part longitudinal axis

[0232] 84 Adapted partial angles

[0233] 86 Sealing element carrier

[0234] 88 Sealing elements

[0235] 90mm nozzle suction channel

[0236] 92 Nozzle fluid channel

[0237] 94 Fluid outlet

[0238] 96 Suction Channel Inlet

[0239] 98 Cleaning Components

[0240] 100 load-bearing elements

[0241] 102 bristles

[0242] 104 bristle bundles

[0243] 106 recess

[0244] 108 Seam Brush

[0245] 110 bristle pack

[0246] 112 Longitudinal axis of the nozzle suction channel

[0247] 114 Mirror Plane

[0248] 116 Mirror plane

[0249] 118 nozzle

[0250] 120 fan nozzle

[0251] 122 Cleaning component plane

[0252] 124 Clean Fluid Jet

[0253] 126 Jet Plane

[0254] 128 tilt angle

[0255] 130 Sealing Lip

[0256] 134 The distal end

[0257] 136 Sealing element edge

[0258] 138 Cleaning component ends

[0259] 140 edge plane

[0260] 142 Sealing element section

[0261] 144 Proximal end

[0262] 146 Proximal end

[0263] 148. Distal end region

[0264] 150 toroidal surface

[0265] 152 Free sealing element length

[0266] 154. The distal end

[0267] 156 Free cleaning element length

[0268] 158 Nozzle section fluid channel

[0269] 160 Sealed suction channel

[0270] 162 First Coupling Device

[0271] 164 First coupling element

[0272] 166 Second Coupling Element

[0273] 168 First bayonet connection device

[0274] 170 arrow

[0275] 172 Second Coupling Device

[0276] 174 Third Coupling Element

[0277] 176 Fourth coupling element

[0278] 178 Second bayonet connection device

[0279] 180 Fluid Channel for Supporting Components

[0280] 182 Clean the end face of the component

[0281] 184 End face plane

[0282] 186 spacing

[0283] 188 Control Device

[0284] 190 scraper

[0285] 192 Blade

[0286] 194 round brush

[0287] 196 Locking device

[0288] 198 Locking element

[0289] 200 oscillation axis

[0290] 202 Compression Spring

[0291] 204 Locking Hook

[0292] 206 Locking recess

[0293] 208 Annular sealing part

[0294] 210 Surface against

[0295] 212 Surface against

[0296] 214 Side View

[0297] 216 Locking nose

[0298] 218 Card Lock Face

[0299] 220 Locking Component

Claims

1. A nozzle attachment (50) for a handheld device (48) of a cleaning device (10), the nozzle attachment being particularly a nozzle attachment for a handheld device (48) of a vacuum cleaner (12) or a steam cleaner, wherein, The nozzle accessory (50) includes a nozzle suction channel (90) and a nozzle fluid channel (92) that is fluidly separated from the nozzle suction channel, wherein the nozzle fluid channel (92) includes at least one fluid outlet (94) for dispensing cleaning fluid at its distal end, wherein the nozzle suction channel (90) includes a suction channel inlet (94) for receiving waste fluid at its distal end, and wherein the nozzle accessory (50) includes at least one cleaning element (98) arranged or constructed on a support element (100), characterized in that the at least one fluid outlet (94) is arranged or constructed on the support element (100).

2. The nozzle accessory according to claim 1, characterized in that, The at least one fluid outlet (94) and the carrier element (100) are constructed as a single piece, especially as an integral unit.

3. The nozzle accessory according to any one of the preceding claims, characterized in that, The nozzle accessory (50) includes one fluid outlet, two, three or more fluid outlets.

4. The nozzle accessory according to any one of the preceding claims, characterized in that, The nozzle suction channel (90) defines a longitudinal axis (112) of the nozzle suction channel, and the nozzle attachment (50) is configured to be mirror-symmetric or substantially mirror-symmetric about at least one mirror plane containing the longitudinal axis (112) of the nozzle suction channel.

5. The nozzle accessory according to any one of the preceding claims, characterized in that, The at least one fluid outlet (94) is configured in the form of a nozzle (118), particularly in the form of a point jet nozzle to generate a point jet, or in the form of a cone jet nozzle to generate a cone jet. In particular, the nozzle (118) a) To generate a fan-shaped jet by constructing it in the form of a fan-shaped nozzle (120), and / or b) held on the load-bearing element (100) by means of force-locking and / or form-locking and / or material-locking. and / or c) It is constructed as a separate component and is configured to be detachably connected to the distal end of the nozzle fluid passage (92), in particular by screwing or locking.

6. The nozzle accessory according to any one of the preceding claims, characterized in that, The at least one fluid outlet (94) is at least partially, and in particular completely, directed toward the at least one cleaning element (98) for wetting the at least one cleaning element (98) with cleaning fluid.

7. The nozzle accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (98) defines a longitudinal axis or plane (122) of the cleaning element, and the at least one fluid outlet (94) is configured to generate a cleaning fluid jet (124) that defines a jet axis or plane (126), and one of the jet axes or the jet plane (126) forms an angle (128) with the longitudinal axis or the plane (122) of the cleaning element on the other side. In particular, the tilt angle (128) has a value in the range of about 0° to about 30°.

8. The nozzle accessory according to any one of the preceding claims, characterized in that, The nozzle attachment (50) includes a sealing element (88) that projects distally and defines the suction channel inlet (96).

9. The suction nozzle according to claim 8, characterized in that, The at least one cleaning element (98) protrudes distally beyond the sealing element (88) on the distal side and in a distal direction. In particular, the sealing element (88) a) Constructed to be deformable, especially constructed to be flexible and / or elastic. and / or b) Constructed in the form of a sealing lip (130), and / or c) Constructed in a sleeve shape, extending parallel to or substantially parallel to the longitudinal axis (112) of the nozzle suction channel of the nozzle accessory (50), and particularly extending concentrically. and / or d) Arranged or constructed on the sealing element carrier (86), In particular, - The sealing element carrier (86) is configured in a sleeve shape. and / or - The sealing element (88) is arranged or configured such that its distal end (134) protrudes beyond the distal end of the sealing element carrier (86) on the distal side. and / or - The sealing element (88) is connected to the sealing element carrier (86) by force-locking and / or shape-locking and / or material-locking, wherein, in particular, the sealing element (88) is injection-molded onto the sealing element carrier (86). and / or - The sealing element carrier (86) is configured to be shape-stable or substantially shape-stable.

10. The nozzle accessory according to claim 8 or 9, characterized in that, The sealing element (88) a) Forms the self-closing boundary of the suction channel inlet (96), and / or b) A sealing element edge (136) is defined on the distal side, and the at least one cleaning element (98) defines a cleaning element end (138) on the distal side, and the cleaning element end (138) protrudes beyond the sealing element edge (136) on the distal side. In particular, - The edge (136) of the sealing element defines an edge plane (140), wherein, more particularly, the edge plane (140) extends transversely to, and in particular perpendicularly to, the longitudinal axis (112) of the nozzle suction channel. and / or - The shape of the sealing element (88) is constant in the sealing element section (142) from the edge (136) of the sealing element toward the sealing element carrier (86).

11. The nozzle accessory according to claim 9 or 10, characterized in that, The sealing element (88) a) has a constant cross-section originating from the sealing element carrier (86), and / or b) It has a gradually decreasing cross section starting from the sealing element carrier (86).

12. The nozzle accessory according to any one of claims 9 to 11, characterized in that, a) The cross-section defined by the sealing element carrier (86) gradually decreases in the direction toward the edge (136) of the sealing element. and / or b) The distal end (134) of the sealing element carrier (86) defines an end profile, and the end profile corresponds to or substantially corresponds to the shape of the sealing element edge (136). and / or c) The cross-sectional shape of the sealing element (88) changes from the sealing element carrier (86) toward the edge (136) of the sealing element. and / or d) The sealing element carrier (86) has a circular cross-section at the end (146) of the sealing element (88). and / or e) The sealing element (88) has a free sealing element length (152) parallel to the longitudinal axis (112) of the nozzle suction channel, extending from the distal end (134) of the sealing element carrier (86), and the at least one cleaning element (98) has a free cleaning element length (156) parallel to the longitudinal axis (112) of the nozzle suction channel, extending from the distal end (154) of the carrier element (100), and the cleaning element length (156) is greater than the sealing element length (152).

13. The nozzle accessory according to any one of the preceding claims, characterized in that, The nozzle accessory (50) is composed of multiple parts and includes an adapter (62) for connection with the handheld part (48), a nozzle portion (66), and a sealing portion (64), wherein the nozzle portion (66), the sealing portion (64), and the adapter portion (62) are configured to be detachably connected to each other. In particular, the nozzle portion (66) defines a nozzle portion fluid passage (158) which is fluidly connected to the at least one fluid outlet (94), and the sealing portion (64) defines a sealing portion suction passage (160) which is fluidly connected to the suction passage inlet (96).

14. The nozzle accessory according to claim 13, characterized in that, The nozzle portion (66) a) and the sealing portion (64) are configured to be detachably connected to each other. and / or b) and the adapter portion (62) are configured to be detachably connected to each other. and / or c) Includes the carrier element (100).

15. The nozzle accessory according to claim 13 or 14, characterized in that, The sealing portion (64) includes the sealing element (88).

16. The nozzle accessory according to any one of claims 13 to 15, characterized in that, The nozzle accessory (50) includes a first coupling device (162) for detachably connecting the nozzle portion (66) and the adapter portion (62) to each other. In particular, the first coupling device (162) a) Includes first and second coupling elements (164, 166), which are arranged or constructed on the nozzle portion (66) on one side and on the adapter portion (62) on the other side, and the first and second coupling elements (164, 166) are engaged in a force-locked and / or form-locked manner in the coupled position, and disengaged in the disengaged position. and / or b) It is configured in the form of a first bayonet connection device (168).

17. The nozzle accessory according to any one of claims 13 to 16, characterized in that, The sealing portion (64) and the adapter portion (62) are configured to be connected to each other in a detachable manner.

18. The nozzle accessory according to any one of claims 13 to 17, characterized in that, The nozzle accessory (50) includes a second coupling device (172) for releasably connecting the sealing portion (64) and the adapter portion (62) to each other. In particular, a) The second coupling device (172) includes third and fourth coupling elements (174, 176), which are arranged or constructed on the nozzle portion (66) on one hand and on the adapter portion (62) on the other hand, and the third and fourth coupling elements (174, 176) are engaged in a force-locked and / or form-locked manner in the coupling position, and disengaged in the disengaged position. and / or b) The second coupling device (172) is configured in the form of a second bayonet connection device (178). and / or c) The adapter portion (62) includes a first adapter portion end (76) and a second adapter portion end (78), the first adapter portion end (76) being detachably connected to the handheld component (48), and the second adapter portion end (78) being configured to detachably connect to the nozzle portion (66) and / or the sealing portion (64). and / or d) The first adapter end (76) defines the first adapter longitudinal axis (80), the second adapter end (78) defines the second adapter longitudinal axis (82), and the first adapter longitudinal axis (80) and the second adapter longitudinal axis (82) form an adapter angle (84) having a value in the range of 180° to about 90°, and in particular a value of about 135°.

19. The nozzle accessory according to any one of claims 13 to 18, characterized in that, The adapter portion (62) defines an adapter portion suction channel (72) and an adapter portion fluid channel (74), which are fluidly separated from each other, and the adapter portion fluid channel (74) is fluidly connected to the nozzle portion fluid channel (158) in a first coupling position, and the adapter portion suction channel (72) is fluidly connected to the sealing portion suction channel (160) in a second coupling position.

20. The nozzle accessory according to any one of claims 10 to 19, characterized in that, The edge (136) of the sealing element defines the suction channel inlet (96) and is elliptical, circular, polygonal, especially triangular, quadrilateral or pentagonal.

21. The nozzle accessory according to any one of the preceding claims, characterized in that, The carrier element (100) is configured to be shape-stable or substantially shape-stable.

22. The nozzle accessory according to any one of the preceding claims, characterized in that, The suction channel inlet profile of the suction channel inlet (96) is geometrically similar to the profile of the cleaning element defined by at least one cleaning element (98).

23. The nozzle accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (98) is configured to be fluid-permeable.

24. The nozzle accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (98) is self-closed in an annular configuration and surrounds the fluid outlet (94).

25. The nozzle accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (98) a) It is brush-shaped and includes multiple bristles (102) and / or bristle bundles (104). and / or b) Constructed in the form of a ring brush (194), said ring brush having at least one self-closing annular bristle loop, and / or c) It is configured in the form of a seam brush (108) having a bristle row (110) comprising a plurality of bristles (102). and / or d) It is configured as a scraping element (190) having a scraping edge (192) pointing toward the distal end.

26. The nozzle accessory according to any one of the preceding claims, characterized in that, The carrier element (100) is configured in a sleeve shape and includes a carrier element fluid channel (180) that is fluidly connected to the at least one fluid outlet (94).

27. The nozzle accessory according to any one of the preceding claims, characterized in that, The fluid outlet (94) defines a free fluid outlet cross-section, the suction channel inlet (96) 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, especially in the range of about 1 / 100 to about 1 / 50.

28. The nozzle accessory according to any one of the preceding claims, characterized in that, The at least one cleaning element (98) has a cleaning element end face (182) on the distal side, and the cleaning element end face (182) defines an end face plane (184) that extends transversely to, and in particular perpendicularly to, the longitudinal axis (112) of the nozzle suction channel of the nozzle attachment (50). In particular, a) The end face (182) of the cleaning element is defined by the distal end faces of the free ends of a plurality of bristles (102). and / or b) The edge plane (140) and the end face plane (184) extend parallel to each other, and the end face plane (184) extends on the distal side of the edge plane (140). and / or c) The edge plane (140) and the end face plane (184) are spaced (186) apart from each other, and the spaced (186) has a value in the range of about 0.5 mm to about 3 mm, especially about 1 mm.

29. The nozzle accessory according to any one of the preceding claims, characterized in that, The nozzle attachment (50), especially the at least one cleaning element (98) and / or the at least one fluid outlet (94) and / or the carrier element (100) and / or the sealing element (88), is made of plastic.

30. A suction nozzle (46) for cleaning equipment (10), particularly for a vacuum cleaner (12) or a steam cleaner, the suction nozzle (46) comprising a handpiece (48) and a nozzle attachment (50), characterized in that, The nozzle attachment (50) is configured in the form of a nozzle attachment (50) according to any one of the preceding claims.

31. The suction nozzle according to claim 30, characterized in that, The handheld device (48) a) and the nozzle attachment (50) are configured to be detachably connected to each other. and / or b) and the adapter (62) are configured to be interconnected in a detachable manner.

32. A cleaning equipment hose (28) for cleaning equipment (10), said cleaning equipment hose being particularly for a spray suction device (12) or a steam cleaner, wherein, The cleaning equipment 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 handpiece (48) of the suction nozzle (46), characterized in that the suction nozzle (46) is configured in the form of a suction nozzle (46) according to claim 30 or 31.

33. The cleaning equipment hose according to claim 70, characterized in that, The second hose suction channel end (34) is fluidly connected or can be connected to the suction port (20) of the cleaning device (10), and the second hose fluid channel end (40) is fluidly connected or can be connected to the fluid port (22) of the cleaning device (10).

34. A cleaning device (10), particularly a cleaning device in the form of a spray suction device (12) or a steam cleaner, the cleaning device comprising a suction device (16), a conveying device (18), a suction port (20), and a cleaning fluid port (22), 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 device hose (28) that is connected to or can be connected to both the suction port (20) and the cleaning fluid port (22), characterized in that the cleaning device hose (28) is configured in the form of a cleaning device hose (28) according to any one of claims 32 or 33.

35. The cleaning equipment according to claim 34, characterized in that, The cleaning equipment (10) includes a control device (188) for controlling the delivery device (18) to enable and disable fluid delivery.

Images