EP3518720B2 - Buse d'aspiration et appareil d'aspiration de surfaces dures - Google Patents

Buse d'aspiration et appareil d'aspiration de surfaces dures Download PDF

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Publication number
EP3518720B2
EP3518720B2 EP16777638.4A EP16777638A EP3518720B2 EP 3518720 B2 EP3518720 B2 EP 3518720B2 EP 16777638 A EP16777638 A EP 16777638A EP 3518720 B2 EP3518720 B2 EP 3518720B2
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EP
European Patent Office
Prior art keywords
lip
suction nozzle
squeegee
accordance
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16777638.4A
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German (de)
English (en)
Other versions
EP3518720A1 (fr
EP3518720B1 (fr
Inventor
Sandra Bartel
Christian Stewen
Christoph FROHMADER
Tony-Dominik DIEGEL
Jürgen ZUGER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Family has litigation
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Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Priority to PL16777638T priority Critical patent/PL3518720T3/pl
Publication of EP3518720A1 publication Critical patent/EP3518720A1/fr
Application granted granted Critical
Publication of EP3518720B1 publication Critical patent/EP3518720B1/fr
Publication of EP3518720B2 publication Critical patent/EP3518720B2/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L1/00—Cleaning windows
    • A47L1/02—Power-driven machines or devices
    • A47L1/05—Hand apparatus with built-in electric motors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L1/00—Cleaning windows
    • A47L1/16—Devices for defrosting window-panes

Definitions

  • the invention relates to a suction nozzle for a portable hard surface suction device for removing and sucking a liquid from a hard surface, in particular from a window pane, comprising a suction nozzle housing in which a suction channel that can be connected to a vacuum source is arranged and on the front side of the housing an elastically deformable removal lip and an elastically deformable support lip are arranged, which protrude from the suction nozzle housing and define a suction space between them, to which the suction channel is connected, wherein the removal lip has a removal lip edge that can be placed on the hard surface to be cleaned at its front end region protruding from the suction nozzle housing, and wherein the support lip has a support lip edge that can be placed on the hard surface to be cleaned at its front end region protruding from the suction nozzle housing, wherein the removal lip edge is arranged behind the support lip edge with respect to a removal direction of the suction nozzle, and wherein the support lip has at least one opening, and wherein the
  • the invention relates to a hard surface suction device with such a suction nozzle.
  • a suction nozzle and a hard surface suction device for removing and sucking a liquid from a hard surface are WO 2009/086893 A2 They are used in particular for cleaning window panes, but also for cleaning other hard surfaces, such as shower cubicle walls, glass doors or tiled walls.
  • the portable hard surface suction device can be moved along the hard surface in a pulling direction like a manual window squeegee, so that liquid can be sucked off the hard surface.
  • the suction nozzle has a suction nozzle housing that surrounds a suction channel.
  • An elastically deformable stripping lip and an elastically deformable support lip that protrude from the suction nozzle housing are arranged on a housing front side of the suction nozzle housing.
  • the stripping lip has a stripping lip edge on its front end region that protrudes from the suction nozzle housing, which can be placed against the hard surface to be cleaned
  • the support lip has a support lip edge on its front end region that protrudes from the suction nozzle housing, which can also be placed against the hard surface to be cleaned.
  • the stripping lip and the support lip define a suction space between them, to which the suction channel is connected in the direction facing away from the stripping lip edge and the support lip edge.
  • the suction channel can be connected to a vacuum source, in particular to a suction unit, of the hard surface suction device, so that a suction flow is formed, under the effect of which liquid can be sucked off the hard surface to be cleaned.
  • the liquid can be sucked from the hard surface into the suction channel via the suction chamber.
  • the hard surface suction device has a dirty liquid container that can hold the sucked-out liquid.
  • the squeegee lip edge and the support lip edge are pressed against the hard surface to be cleaned and the suction nozzle is guided along the hard surface in a squeegee direction, for example from top to bottom.
  • the support lip edge is arranged in front of the squeegee lip edge so that liquid on the hard surface builds up on the support lip edge when the suction nozzle moves and from there passes through at least one opening in the support lip into the suction chamber, from where it is sucked into the suction channel.
  • the squeegee lip edge arranged behind the support lip edge in relation to the squeegee direction slides along the hard surface and ensures that as much liquid as possible is squeegeed from the hard surface so that the hard surface is cleaned without leaving streaks.
  • the WO 2016/029967 A1 discloses a suction nozzle with the features of the preamble of patent claim 1.
  • the object of the present invention is therefore to further develop a suction nozzle and a hard surface suction device of the type described above in such a way that a better cleaning result can be achieved.
  • the suction nozzle according to the invention uses a stripping lip which has at least one stripping lip extension which forms a stripping lip edge and is aligned obliquely or perpendicularly to a longitudinal section of the stripping lip which protrudes from the front side of the housing.
  • the stripping lip forms a longitudinal section which protrudes forwards from the front side of the housing and which is adjoined by the at least one stripping lip extension which is inclined to the longitudinal section and which forms a stripping lip edge at its free end.
  • the stripping lip extension protrudes obliquely or perpendicularly from the longitudinal section of the stripping lip and can be pressed with its free end, which forms a stripping lip edge, against the hard surface to be cleaned.
  • a stripping lip extension inclined to the longitudinal section which forms a stripping lip edge at its free end, has the advantage that the deformable squeegee lip can make practically linear contact with the hard surface to be cleaned in a wide variety of orientations of the suction nozzle relative to the hard surface.
  • the user does not have to pay careful attention to aligning the suction nozzle at a specific angle to the hard surface; rather, the provision of a longitudinal section and a squeegee lip extension protruding from the longitudinal section in the direction of the hard surface ensures that linear contact between the squeegee lip and the hard surface can be achieved practically regardless of the orientation of the suction nozzle relative to the hard surface. This in turn means that the cleaning result can be improved, in particular streak-free cleaning can be achieved.
  • a further improvement in the cleaning result is achieved according to the invention in that the squeegee lip has a first and a second side edge that limit the width of the squeegee lip, and in that the squeegee lip is reinforced in some areas at a distance from the side edges.
  • the reinforcement of the squeegee lip in some areas gives it a non-uniform flexural rigidity, namely the flexural rigidity of the squeegee lip is higher in individual areas that are at a distance from the side edges than in the area of the side edges.
  • the increased flexural rigidity in some areas improves the cleaning result in cases in which an edge area of a hard surface, in particular an edge area of a window pane, is cleaned using the suction nozzle, whereby unevenness occurs in the edge area.
  • unevenness is formed, for example, by sealing strips that border a window pane. If the edge area of the window pane is cleaned using the suction nozzle, it can happen that the squeegee lip sits on a sealing strip with its edge area adjacent to a side edge and thereby lifts off the window pane.
  • the removal lip is given greater flexural rigidity in certain areas. This can reduce the risk of the removal lip accidentally lifting off the window pane when its outer edge area rests on a sealing strip.
  • the peeling lip has at least one reinforcing rib on its upper side facing away from the support lip at a distance from the side edges.
  • the reinforcing rib advantageously extends over the entire length of the longitudinal section of the peeling lip.
  • the at least one peeling lip extension is designed like a hook.
  • the pull-off lip has a pull-off lip extension which engages behind the support lip edge in relation to the pull-off direction.
  • the peeling lip has a longer and a shorter leg, which are aligned obliquely or perpendicular to each other, wherein the longer leg forms the longitudinal section of the peeling lip and the shorter leg forms a peeling lip extension of the peeling lip.
  • the pull-off lip is L-shaped.
  • the stripping lip has a single stripping lip extension, which can be pressed with its stripping lip edge against the hard surface to be cleaned, as explained above. It can also be provided that the stripping lip has two stripping lip extensions, each of which forms a stripping lip edge and points in different directions with respect to the longitudinal section. This makes it possible, for example, to mount the stripping lip optionally in a first or a second orientation on the suction nozzle housing, with a first orientation pointing in the direction of the surface to be cleaned.
  • Hard surface is inclined and the squeegee lip edge can be pressed against the hard surface, and wherein in a second orientation the second squeegee lip extension is inclined in the direction of the hard surface to be cleaned and the squeegee lip edge can be pressed against the hard surface.
  • the peeling lip has two peeling lip extensions which are designed as a mirror image of a central plane of the longitudinal section of the peeling lip.
  • the peeling lip can be T-shaped or Y-shaped.
  • a first arm of the peeling lip can form a first peeling lip extension with a first peeling lip edge
  • a second arm of the peeling lip can form a second peeling lip extension with a second peeling lip edge, wherein the two arms protrude on opposite sides from an elongated central part of the peeling lip and the central part forms the longitudinal section of the peeling lip.
  • the length of the longitudinal section is at least six times the length of the peeling lip extension.
  • the length of the longitudinal section is the distance between the front end of the longitudinal section facing away from the suction channel and the front side of the suction nozzle housing, and the length of the peeling lip extension is the vertical distance of the peeling lip edge arranged at the free end of the peeling lip extension from a center plane of the longitudinal section.
  • the length of the peeling lip extension can be, for example, 1 to 6 mm, in particular 2 to 4 mm, and the length of the longitudinal section can be, for example, 10 to 30 mm, in particular 16 to 24 mm.
  • the longitudinal section of the removal lip is straight in the undeformed basic position of the removal lip
  • the undeformed basic position is a position of the squeegee lip in which it does not come into contact with the hard surface to be cleaned and is therefore not subject to any deformation caused by being pressed against the hard surface.
  • the longitudinal section is advantageously designed to be straight in this basic position of the squeegee lip.
  • the longitudinal section extends parallel or collinear to a central axis of the suction nozzle housing in the undeformed basic position of the pull-off lip.
  • the stripping lip has a stripping lip extension which, in the undeformed basic position of the stripping lip, rests against the front end region of the support lip.
  • the distance between the front end region of the support lip and a stripping lip extension is as small as possible.
  • the stripping lip extension which can be pressed against the hard surface, lies directly against the front end area of the support lip in the undeformed basic position of the stripping lip.
  • the support lip has a front surface at its front end area, against which a removal lip extension rests with a contact surface in the undeformed basic position of the removal lip.
  • a pull-off lip extension thus touches the support lip with its front end region, with a contact surface of the pull-off lip extension resting on a front surface of the support lip.
  • the front surface of the support lip forms a wedge surface which extends to the edge of the support lip.
  • the contact surface of the pulling lip extension advantageously forms an inclined surface inclined at an obtuse angle to a lower side of the longitudinal section.
  • the inclined surface can extend from the pulling lip edge to the lower side of the longitudinal section of the pulling lip facing the support lip.
  • the lower side can be designed to be flat in the undeformed basic position of the pulling lip.
  • the at least one opening in the support lip is designed as a recess arranged on the edge of the support lip.
  • liquid builds up on the support lip when the suction nozzle is moved in the pulling direction along the hard surface to be cleaned.
  • the liquid building up on the support lip can reach the suction space between the support lip and the pulling lip via the at least one front-side recess in the support lip. It is advantageous if a large number of recesses are arranged on the edge of the support lip.
  • the support lip has a plurality of depressions on its underside facing away from the squeegee lip, each of which opens into a recess arranged on the edge of the support lip. Liquid that accumulates on the support lip when the support lip is guided along the hard surface to be cleaned can reach the recesses arranged on the front side of the support lip via the depressions arranged on the underside of the support lip and flow via these into the suction chamber.
  • the support lip has a large number of elevations on the upper side of the support lip facing the squeegee lip.
  • the elevations can form spacers, so that it is ensured that the squeegee lip does not lie flat on the support lip even when deformed when the suction nozzle is moved along the hard surface to be cleaned. Rather, the elevations on the support lip ensure that liquid can reach the suction channel via the suction chamber.
  • the elevations arranged on the upper side of the support lip extend to a front surface which the support lip has at its front end region.
  • a pull-off lip extension is supported with a contact surface on the front surface of the support lip when the pull-off lip assumes its undeformed basic position.
  • the elevations arranged on the upper side of the support lip form rib-like flow guide elements.
  • the shape of the flow guide elements can be adapted to the flow direction of the suction flow that forms in the suction chamber when the suction channel is connected to a vacuum source. Flow losses can thus be kept to a minimum.
  • the elevations are arranged in a fan shape.
  • the distances between immediately adjacent elevations increase with increasing distance from a central axis of the suction nozzle housing.
  • the distances between immediately adjacent elevations increase with increasing distance from a central axis of the suction nozzle housing.
  • the squeegee lip and/or the support lip form side walls in an advantageous embodiment of the invention.
  • the suction space can be at least partially closed laterally by means of the side walls.
  • the side walls can, for example, be designed in the manner of ribs that are molded onto the squeegee lip and/or the support lip in the area of the side edges. The provision of the side walls reduces the lateral inflow of false air into the suction space between the squeegee lip and the support lip.
  • a pair of reinforcing ribs is arranged at a distance from each side edge.
  • the peeling lip has at least two pairs of reinforcing ribs on the upper side of the peeling lip, with a first pair of reinforcing ribs being arranged at a short distance from a first side edge, and a second pair of reinforcing ribs being arranged at a short distance from the second side edge of the peeling lip.
  • the two pairs of reinforcing ribs are advantageously at the same distance from the nearest side edge of the peeling lip.
  • the distance between the pairs of reinforcing ribs and the nearest side edge can be, for example, 4 mm to 8 mm.
  • the distance between the two reinforcing ribs of a pair of reinforcing ribs is preferably about 0.5 mm to about 3 mm.
  • the at least one reinforcing rib has a support surface which rests against the front of the housing when the stripping lip is deformed from the undeformed basic position in the direction facing away from the support lip.
  • the support surface of the reinforcing ribs can be at a distance from the front of the housing, but if the stripping lip is pressed against the hard surface when cleaning a hard surface, the stripping lip is deformed and the support surface of the reinforcing ribs comes to rest against the front of the housing.
  • stripping lip to support itself on the front of the housing via the reinforcing ribs, and this in turn means that the stripping lip has a higher flexural rigidity in the area of the reinforcing ribs than in areas that do not have reinforcing ribs.
  • the length of the area of the squeegee lip protruding from the suction nozzle housing is advantageously at least 18 mm, in particular 20 to 30 mm.
  • the length is understood here as the distance between the front side of the housing and the front end of the squeegee lip.
  • the length of the region of the support lip protruding from the suction nozzle housing is preferably at least 16 mm, in particular approximately 20 to 30 mm.
  • the two side edges of the stripping lip are aligned parallel to each other, so that the distance between the two side edges, i.e. the width of the stripping lip, is constant over the entire length of the stripping lip.
  • the area of the stripping lip protruding from the suction nozzle housing can be rectangular.
  • the side edges of the stripping lip are spaced apart from one another with increasing distance from the front side of the suction nozzle housing, i.e. that the width of the stripping lip increases with increasing distance from the front side of the housing.
  • the area of the stripping lip protruding from the suction nozzle housing can, for example, be designed to be trapezoidal in plan view.
  • the side edges of the peeling lip are curved outwards in an arc shape.
  • the invention relates not only to a suction nozzle but also to a portable hard surface suction device with such a suction nozzle.
  • the portable hard surface suction device can be designed in particular in the form of a hand-held device that can be carried by the user with one hand and guided along a window pane in a pulling direction like a manual window squeegee.
  • the hard surface suction device has a suction unit as well as a dirty liquid tank and a separating device, whereby liquid can be separated from a sucked-up liquid-air mixture by means of the separating device.
  • the hard surface suction device also has a suction nozzle of the type explained above.
  • a suction flow can be generated in the suction chamber between the squeegee lip and the support lip and in the suction channel connected to the suction chamber, under the effect of which a mixture of liquid and air can be sucked into the suction chamber.
  • the sucked-in liquid can be separated from the mixture of liquid and air using the separator device and transferred to the dirty liquid tank.
  • the sucked-in air can be released into the environment via air outlet openings on the hard surface suction device.
  • FIG. 1 to 9 an advantageous embodiment of a portable hard surface suction device according to the invention is shown, which is designated overall by the reference numeral 10 and which has an advantageous embodiment of a suction nozzle 12 according to the invention.
  • liquid can be removed and sucked up from a hard surface, especially from a window pane.
  • the hard surface suction device can be moved along the hard surface by the user like a manual window squeegee.
  • the portable hard surface suction device thus forms a window cleaning device.
  • the hard surface suction device 10 comprises a base housing 14, which forms a handle 16 and surrounds a suction unit 18, which is driven by an electric motor 20.
  • the electric motor 20 is supplied with electrical energy by a rechargeable battery 22 arranged in the base housing 14.
  • the suction unit 18 is in flow connection with a separating device 26 arranged in the base housing 14 via a suction line 24 running in the base housing 14, with the aid of which liquid can be separated from a sucked-in liquid-air mixture.
  • the separated liquid can be transferred to a dirty liquid container 28, which is arranged on the side of the base housing 14 facing away from the handle 16 and can be separated from the base housing 14 for emptying.
  • the suction nozzle 12 is connected to the base housing 14 on the upper side.
  • the suction nozzle 12 has a suction nozzle housing 30 and can be detachably connected to the base housing 14.
  • the suction nozzle housing 30 comprises an upper housing half-shell 32 and a lower housing half-shell 34, which are screwed together by means of connecting screws 36.
  • the suction nozzle housing 30 surrounds a suction channel 38 which extends from a housing front side 40 to a housing rear side 42.
  • the housing front side 40 faces away from the base housing 14, whereas the housing rear side 42 faces the base housing 14.
  • An elastically deformable removal lip 44 and an elastically deformable support lip 46 are held on the housing front side 40 and protrude forward from the suction nozzle housing 30 in the direction away from the suction channel 38.
  • a silicone material can be used to produce the peeling lip 44.
  • the support lip 46 is advantageously molded onto the lower housing half-shell 34.
  • the lower housing half-shell 34 together with the support lip 46 can form a common injection-molded part with two components.
  • the lower housing half-shell 34 can form a hard component of the injection-molded part and the support lip 46 can form an elastomer component of the injection-molded part.
  • the pull-off lip 44 has a holding section 48 facing the suction channel 38, which is clamped between the upper housing half-shell 32 and an intermediate part 37.
  • the intermediate part 37 is clamped between the upper housing half-shell 32 and the lower housing half-shell 34.
  • the holding section 48 is adjoined by a longitudinal section 50 of the pull-off lip 44 protruding from the housing front side 40.
  • the longitudinal section 50 is designed to be straight.
  • the longitudinal section 50 is adjoined by a hook-like stripping lip extension 52 which is inclined to the longitudinal section 50 and which forms a stripping lip edge 54 at its free end.
  • the stripping lip edge 54 can be placed against a hard surface to be cleaned. so that the squeegee lip 44 contacts the hard surface to be cleaned in a linear manner.
  • the support lip 46 also protrudes from the housing front side 40. At its free end, the support lip 46 forms a support lip edge 56. In the undeformed basic position, the support lip edge 56 rests against the removal lip edge 54.
  • the support lip 46 has a support lip upper side 58 facing the pull-off lip 44 and a support lip lower side 60 facing away from the pull-off lip 54.
  • a wedge-shaped front surface 62 extends from the support lip 46 in the direction of the support lip upper side 58, against which the pull-off lip 44 rests flat in the undeformed basic position by means of a contact surface 64 designed to be complementary to the front surface 62.
  • the contact surface 64 forms an inclined surface 68 inclined at an obtuse angle to an underside 94 of the longitudinal section 50. In the embodiment shown, the angle between the inclined surface 68 and the underside 94 of the longitudinal section 50 is approximately 135°.
  • the support lip 46 has a plurality of elevations 70 on the support lip upper side 58, which are arranged symmetrically to a central axis 72 of the suction nozzle housing 30, wherein the distance between two immediately adjacent elevations 70 increases with increasing distance from the central axis 72.
  • the elevations 70 form rib-like flow guide elements 74, which are arranged in a fan shape on the support lip upper side 58.
  • the support lip 46 has a plurality of openings in the form of recesses 76, which are semicircular in shape.
  • the support lip 46 On the support lip underside 60, the support lip 46 has a plurality of depressions 78, each of which opens into a recess 76.
  • the peeling lip 44 together with the support lip 46, defines a suction chamber 80 which is delimited on a first side edge 82 of the peeling lip 44 by a first side wall 84 and on a second side edge 86 of the peeling lip 44 by a second side wall 88.
  • the two side walls 84, 88 are integrally connected to the peeling lip 44.
  • the distance between the first side edge 82 and the second side edge 86 defines the width of the peeling lip 44.
  • the stripping lip 44 has a stripping lip upper side 92 facing away from the support lip 46 and the longitudinal section 50 has the already mentioned underside 94 facing the support lip 46.
  • the underside 94 is flat in the undeformed basic position of the stripping lip 44 and extends parallel to the central axis 72 of the suction nozzle housing 30.
  • the pull-off lip 44 is reinforced in some areas. For this purpose, it has a first pair of reinforcing ribs 96, 98 on the pull-off lip top side 92 at a short distance from the first side edge 82, and the pull-off lip 44 has a second pair of reinforcing ribs 100, 102 on the pull-off lip top side 92 at a short distance from the second side edge 86.
  • the reinforcing ribs 96, 98, 100 and 102 are each identical, aligned parallel to the central axis 72 and extend with increasing height from the free end 90 of the pull-off lip 44 to the housing front side 40, wherein they each form a support surface 104 facing the housing front side 40, which is aligned perpendicular to the longitudinal axis 66 of the longitudinal section 50.
  • the distance A1 between the first pair of reinforcing ribs 96, 98 and the first side edge 82 is identical to the distance A2 between the second pair of reinforcing ribs 100, 102 and the second side edge 86.
  • the distance is approximately 4 to 8 mm in each case.
  • the distance between the two reinforcing ribs 96, 98 of the first pair of reinforcing ribs is approximately 1 to 3 mm in the illustrated embodiment and is identical to the distance between the two reinforcing ribs 100, 102 of the second pair of reinforcing ribs.
  • the length L1 of the region of the pull-off lip 44 protruding from the suction nozzle housing 30 is at least 18 mm, preferably 20 to 30 mm, and the length L2 of the region of the support lip 46 protruding from the suction nozzle housing 30 is at least 16 mm, preferably 20 to 30 mm.
  • the hard surface suction device 10 can be moved along a hard surface to clean it.
  • Figure 7 the cleaning of a hard surface 106 is illustrated, whereby, to achieve a simpler overview, only the suction nozzle 12 is shown schematically in a longitudinal section in the area of the central axis 72.
  • the suction nozzle 12 can be moved along the hard surface 106 in a stripping direction 108, in the illustrated embodiment from top to bottom, whereby the stripping lip edge 54 and the support lip edge 56 contact the hard surface 106.
  • the support lip edge 56 is arranged in front of the stripping lip edge 54.
  • the support lip edge 56 takes up a distance from the stripping lip edge 54 due to the deformation of the support lip 46 and the deformation of the stripping lip 44.
  • the stripping lip extension 52 engages behind the support lip 46 in relation to the stripping direction 108.
  • suction nozzle 12 If the suction nozzle 12 is moved along the hard surface 106 in the stripping direction 108, liquid adhering to the hard surface 106 accumulates in front of the support lip 46 and passes through the depressions 78 arranged on the support lip underside 60 and the recesses 76 arranged on the support lip edge 56 into the suction chamber 80 between the support lip 46 and the stripping lip 44.
  • the suction nozzle 12 is of course suitable for cleaning a hard surface 106. connected to the base housing 14 of the hard surface suction device 10 and the suction unit 18 generates a suction flow, under the effect of which the liquid in the suction chamber 80 passes through the suction channel 38 to the separating device 26. From the separating device 26, the liquid flows into the dirty liquid container 28.
  • the stripping lip 44 contacts the hard surface 106 to be cleaned in a linear manner even when the stripping lip 44 is deformed from its basic position, as shown in Figure 7
  • the linear contact ensures that the hard surface 106 can be cleaned without leaving streaks, the cleaning result being practically independent of the force with which the user presses the squeegee lip 44 against the hard surface 106 and practically also independent of the angle that the central axis 72 of the suction nozzle housing 30 assumes with respect to the surface 106 to be cleaned.
  • FIGS 8 and 9 illustrate the cleaning of an edge region of a hard surface in the form of a window pane 110, which is bordered by a sealing strip 112. If the suction nozzle 12 is moved along the window pane 110, it may happen that the pull-off lip 44 as well as the support lip 46 rest with their outer edge region on the sealing strip 112. This may result in the support lip 46 and the pull-off lip 44 lifting off the window pane 110 in the area immediately adjacent to the sealing strip 112. The lifting of the support lip 46 does not have a major impact on the cleaning result, but the lifting of the pull-off lip 44 could result in liquid residues remaining on the window pane 110 in the area immediately adjacent to the sealing strip 112.
  • the reinforcing ribs 96, 98, 100 and 102 are arranged on the upper side 92 of the removal lip at a short distance from the side edges 82, 86.
  • the reinforcing ribs which are arranged adjacent to the sealing strip 112, are supported with their support surface 104 on the housing front side 40 and therefore counteract a deformation of the removal lip 44.
  • FIG 10 shows an alternative embodiment of a suction nozzle according to the invention, which is designated overall by the reference numeral 120.
  • the suction nozzle 120 is largely identical to the suction nozzle 12 explained above.
  • the suction nozzle 120 has in particular the suction nozzle housing 30 already explained above with a housing front side 40.
  • the suction nozzle shown in Figure 10 A stripping lip 124 is used in the schematically illustrated suction nozzle 120, the width of which increases with increasing distance from the housing front side 40.
  • the stripping lip 124 has a first side edge 126 and a second side edge 128, both of which are designed to be straight and run obliquely outwards, so that the distance between the two side edges 126, 128 increases uniformly with increasing distance from the housing front side 40.
  • the area of the stripping lip 124 protruding from the suction nozzle housing 30 is designed to be trapezoidal.
  • the suction nozzle 120 also has, in addition to the squeegee lip 124, a Figure 10 A support lip (not shown) is used, whereby the width of the support lip also increases uniformly with increasing distance from the housing front side 40.
  • FIG 11 A further alternative embodiment of a suction nozzle according to the invention is shown schematically, which is designated overall by the reference numeral 130.
  • the suction nozzle is designed largely identically to the one in Figure 10
  • the suction nozzle 130 has a removal lip 134, the first side edge 136 and the second side edge 138 of which are curved outwards.
  • the suction nozzle 130 also has a Figure 11 not shown support lip.
  • the support lip can also have side edges that are curved outwards in an arc shape, which thus have practically the same course as the side edges 136, 138 of the removal lip 134.
  • Figure 12 shows a peeling lip 140 which is designed similarly to the peeling lip 44 explained in detail above.
  • the peeling lip 140 has a longitudinal section 142 from which a single peeling lip extension 144 protrudes laterally, similar to the peeling lip 44.
  • the peeling lip extension 144 is essentially designed in the manner of a right-angled triangle and has an inclined surface 146 which is aligned at an angle of approximately 135° to the underside 148 of the longitudinal section 142.
  • the peeling lip extension 144 has a front end surface 150 which is aligned at a right angle to a central plane 152.
  • the peeling lip 140 is essentially L-shaped.
  • Figure 13 shows schematically a peeling lip 160, which also has a single peeling lip extension 164.
  • the peeling lip 160 has a front end surface with an upper end surface section 166 and a lower end surface section 168, which are aligned at an angle to one another.
  • the upper end surface section 166 is aligned parallel to an inclined surface 170, which protrudes from the underside 172 of a longitudinal section 173 and is aligned at an angle of approximately 135° to the underside 172, and the lower end surface section 168, which together with the inclined surface 170 forms the peeling lip edge 174 of the peeling lip 160, is aligned perpendicular to the center plane 176 of the peeling lip 160.
  • Figure 14 shows a peeling lip 180 with a first peeling lip extension 182 and a second peeling lip extension 184.
  • the first peeling lip extension 182 projects downwards from the underside 186 of a longitudinal section 190 and the second peeling lip extension 184 projects upwards from the top side 188 of the longitudinal section 190.
  • the peeling lip extensions 182, 184 form a common front end surface 192 of the peeling lip 180, which is aligned perpendicular to a center plane 194 of the peeling lip 180.
  • a lower inclined surface 196 of the first peeling lip extension 192 extends from the underside 186 to a first peeling lip edge 198, and an upper inclined surface 200 of the second peeling lip extension 184 extends from the top side 188 to a second peeling lip edge 202.
  • Figure 15 schematically shows a peeling lip 210 which is substantially T-shaped, wherein a first peeling lip extension 212 protrudes perpendicularly from a bottom side 214 of a longitudinal section 215 and wherein a second peeling lip extension 216 protrudes perpendicularly from a top side 218 of the longitudinal section 215.
  • a peeling lip 230 is shown schematically, in which a first peeling lip extension 232 and a second peeling lip extension 234 are aligned obliquely to a center plane 236 and are essentially rectangular in shape.
  • the peeling lip 230 is essentially Y-shaped.
  • Figure 17 shows schematically a peeling lip 240 with a first peeling lip extension 242, which protrudes from a bottom side 244 of a longitudinal section 254 and forms a first arcuate transition surface 246, which is concave and adjoins the underside 244.
  • the peeling lip 240 has a second peeling lip extension 248 which protrudes from an upper side 250 of the longitudinal section 254 and forms a second arcuate transition surface 252 which is concave and adjoins the upper side 250.
  • the first peeling lip extension 242 forms, together with the longitudinal section 254 of the peeling lip 240, a lower end surface 256 of the peeling lip 240, and the second peeling lip extension forms, together with the longitudinal section 254, an upper end surface 258 of the peeling lip 240.
  • the two end surfaces 256, 258 are aligned at an obtuse angle to one another and are each flat.
  • Figure 18 shows schematically a peeling lip 270 with a first peeling lip extension 272, which has a first inclined surface 276 protruding from the underside 274 of a longitudinal section 290, and with a second peeling lip extension 278, which protrudes from an upper side 280 of the longitudinal section 290 and has a second inclined surface 282 which adjoins the upper side 280.
  • the first peeling lip extension 272 forms a lower end surface 292 together with the longitudinal section 290 of the peeling lip 270
  • the second peeling lip extension 278 forms an upper end surface 294 together with the longitudinal section 290.
  • the two end surfaces 292, 294 are each flat and aligned at an obtuse angle to one another.
  • a peeling lip 300 is shown schematically, which has a first peeling lip extension 302 and a second peeling lip extension 304, wherein the two peeling lip extensions 302, 304 together with a longitudinal section 306 of the peeling lip 300 form an arcuate, concave end surface 308.
  • a peeling lip 320 is shown schematically, in which a first peeling lip extension 322 together with a second peeling lip extension 324 and a longitudinal section 326 form a straight end surface 330 aligned perpendicular to a center plane 328.
  • the peeling lip 300 which in Figure 19 is shown, as well as in the peeling lip 320, which is shown in Figure 20, the peeling lip extensions of the respective end surface 308 or 330 have opposite, concavely designed transition surfaces 310, 312 or 332, 334.
  • the Figures 12 to 20 The schematically illustrated peeling lips, like the peeling lip 44, can be reinforced in some areas at a distance from their side edges in order to give the peeling lip a non-uniform bending stiffness, as explained in detail above using the example of the peeling lip 44.
  • the peeling lips 140 and 160 shown can have reinforcing ribs on their peeling lip upper side at a distance from the respective side edges, in particular a pair of reinforcing ribs at a distance from each side edge.
  • Reinforcing ribs can also be used in the Figures 14 to 20
  • the stripping lips shown are used, each of which is arranged at a distance from a side edge.
  • reinforcing ribs are arranged on both the upper side of the stripping lip and the lower side of the stripping lip, whereby these protrude less from the underside or the upper side of the respective longitudinal section than the stripping lip edges of the stripping lip extensions, so that it is ensured that the stripping lip edges can be pressed against the hard surface to be cleaned without the reinforcing ribs coming into contact with the hard surface.

Landscapes

  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Ink Jet (AREA)
  • Cleaning In General (AREA)

Claims (30)

  1. Buse d'aspiration pour un appareil d'aspiration de surfaces dures (10) portatif destiné à retirer et à aspirer un liquide d'une surface dure (106), en particulier d'une vitre de fenêtre (110), comprenant un boîtier de buse d'aspiration (30), dans lequel est disposé un canal d'aspiration (38) pouvant être raccordé à une source de vide et sur la face frontale de boîtier (40) duquel sont disposées une raclette (44) élastiquement déformable et une lèvre d'appui (46) élastiquement déformable, qui font saillie du boîtier de buse d'aspiration (30) et définissent entre elles un espace d'aspiration (80) auquel se raccorde le canal d'aspiration (38), dans laquelle la raclette (44) présente, sur sa zone d'extrémité avant faisant saillie du boîtier de buse d'aspiration (30), un bord de raclette (54) pouvant être placé sur la surface dure (106) à nettoyer, et dans laquelle la lèvre d'appui (46) présente, sur sa zone d'extrémité avant faisant saillie du boîtier de buse d'aspiration (30), un bord de lèvre d'appui (56) pouvant être placé sur la surface dure (106) à nettoyer, dans laquelle le bord de raclette (54) est disposé derrière le bord de lèvre d'appui (56) par rapport à une direction de raclage (108) de la buse d'aspiration (12) et la lèvre d'appui (46) présente au moins une ouverture, et dans laquelle la raclette (44) présente une section longitudinale (50) dépassant vers l'avant de la face frontale de boîtier (40) dans la direction opposée au canal d'aspiration (38), caractérisée en ce qu'au moins un appendice de raclette (52) incliné par rapport à la section longitudinale (50) dans la position de base non déformée de la raclette (44) se raccorde à la section longitudinale (50) de la raclette (44) dépassant vers l'avant de la face frontale de boîtier (40) dans la direction opposée au canal d'aspiration (38), qui réalise à son extrémité libre un bord de raclette (54), et en ce que la raclette (44) présente un premier et un deuxième bord latéral (82, 86), qui limitent la largeur de la raclette (44), et en ce que la raclette (44) est renforcée par endroits à distance des bords latéraux (82, 86), dans laquelle la raclette (44) présente sur sa face supérieure de raclette (92) opposée à la lèvre d'appui (46), à distance des bords latéraux (82, 86), respectivement au moins une nervure de renforcement (96, 98, 100, 102).
  2. Buse d'aspiration selon la revendication 1, caractérisée en ce que l'au moins un appendice de raclette (52) est conçu en forme de crochet.
  3. Buse d'aspiration selon la revendication 1 ou 2, caractérisée en ce que la raclette (44) présente un appendice de raclette (52), qui vient se bloquer derrière le bord de lèvre d'appui (56) par rapport à la direction de raclage (108).
  4. Buse d'aspiration selon la revendication 1, 2 ou 3, caractérisée en ce que la raclette (44) présente une branche plus longue et une plus courte, qui sont orientées en biais ou perpendiculairement l'une par rapport à l'autre, dans laquelle la branche plus longue réalise la section longitudinale (50) et la branche plus courte un appendice de raclette (52) de la raclette (44).
  5. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce que la raclette (44) est conçue en forme de L.
  6. Buse d'aspiration selon l'une quelconque des revendications 1 à 4, caractérisée en ce que la raclette présente deux appendices de raclette (182, 184; 212, 216; 232, 234; 242, 248; 272, 278; 302, 304; 322, 324), qui réalisent respectivement un bord de raclette et sont dirigés dans des directions différentes par rapport à la section longitudinale.
  7. Buse d'aspiration selon la revendication 6, caractérisée en ce que la raclette présente deux appendices de raclette (182, 184; 212, 216; 232, 234; 242, 248; 272, 278; 302, 304; 322, 324), qui sont réalisés de manière inversée par rapport à un plan médian (194, 236, 328) de la section longitudinale (190, 215, 254, 290, 306, 326) de la raclette (180, 210, 230, 240, 270, 300, 320).
  8. Buse d'aspiration selon la revendication 6 ou 7, caractérisée en ce que la raclette (210, 230) est conçue en forme de T ou en forme d'Y.
  9. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce que la section longitudinale (50) de la raclette (44) est conçue de façon rectiligne dans la position de base non déformée de la raclette (44).
  10. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce que la raclette (44) présente un appendice de raclette (52), qui s'applique dans la position de base non déformée de la raclette (44) contre la zone d'extrémité avant de la lèvre d'appui (46).
  11. Buse d'aspiration selon la revendication 10, caractérisée en ce que la lèvre d'appui (46) présente sur sa zone d'extrémité avant une surface frontale (62), contre laquelle l'appendice de raclette (52), dans la position de base non déformée de la raclette (44), s'appuie avec une surface de contact (64).
  12. Buse d'aspiration selon la revendication 11, caractérisée en ce que la surface frontale (62) réalise une surface cunéiforme, qui s'étend jusqu'au bord de lèvre d'appui (56).
  13. Buse d'aspiration selon la revendication 11 ou 12, caractérisée en ce que la surface de contact (64) réalise une surface oblique (68) inclinée selon un angle obtus par rapport à une face inférieure (94) de la section longitudinale (50).
  14. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce que l'au moins une ouverture de la lèvre d'appui (46) est conçu sous la forme d'évidements (76) disposés sur le bord de lèvre d'appui (56).
  15. Buse d'aspiration selon la revendication 14, caractérisée en ce que la lèvre d'appui (46) présente sur sa face inférieure de lèvre d'appui (60) opposée à la raclette (44) une pluralité des creux (78), qui débouchent respectivement dans un évidement (76) disposé sur le bord de lèvre d'appui (56) .
  16. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce que la lèvre d'appui (46) présente une pluralité d'élévations (70) sur sa face supérieure de lèvre d'appui (58) tournée vers la raclette (44).
  17. Buse d'aspiration selon la revendication 16, caractérisée en ce que les élévations (70) s'étendent jusqu'à une surface frontale (62) disposée sur la zone d'extrémité avant de la lèvre d'appui (46).
  18. Buse d'aspiration selon la revendication 16 ou 17, caractérisée en ce que les élévations (70) réalisent des éléments de guidage d'écoulement (74) du type nervure.
  19. Buse d'aspiration selon la revendication 16, 17 ou 18, caractérisée en ce que les élévations (70) sont disposées en forme d'éventail.
  20. Buse d'aspiration selon l'une quelconque des revendications 16 à 19, caractérisée en ce que les écarts entre des élévations (70) directement voisines les unes des autres augmentent de plus en plus à mesure qu'augmente l'écart par rapport à un axe médian (72) du boîtier de buse d'aspiration (30).
  21. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce que la raclette (44) et/ou la lèvre d'appui (46) réalisent des parois latérales (84, 88), qui ferment au moins en partie l'espace d'aspiration (80) de manière latérale.
  22. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce qu'une paire de nervures de renforcement (96, 98, 100, 102) est respectivement disposée à distance de chaque bord latéral (82, 86) .
  23. Buse d'aspiration selon la revendication 22, caractérisée en ce que l'écart que présente chaque paire de nervures de renforcement (96, 98, 100, 102) par rapport au bord latéral (82, 86) le plus proche est d'environ 4 mm à environ 8 mm.
  24. Buse d'aspiration selon la revendication 22 ou 23, caractérisée en ce que l'écart entre les deux nervures de renforcement (96, 98, 100, 102) d'une paire de nervures de renforcement est d'environ 0,5 mm à 3 mm.
  25. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce que l'au moins une nervure de renforcement (96, 98, 100, 102) présente une surface d'appui (104) qui, lors de la déformation de la raclette à partir de la position de base non déformée dans la direction opposée à la lèvre d'appui (46), s'applique contre la face frontale de boîtier (40).
  26. Buse d'aspiration selon l'une des revendications précédentes, caractérisée en ce que la longueur (L1) de la zone de la raclette (44) faisant saillie du boîtier de la buse d'aspiration (30) est d'au moins 18 mm, en particulier d'environ 20 à 30 mm.
  27. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce que la longueur (L2) de la zone de la lèvre d'appui (46) faisant saillie du boîtier de buse d'aspiration (30) est d'au moins 16 mm, en particulier d'environ 20 à 30 mm.
  28. Buse d'aspiration selon l'une quelconque des revendications précédentes, caractérisée en ce que la raclette (124, 134) présente un premier et un deuxième bord latéral (126, 128; 136, 138), qui délimitent la largeur de la raclette (124, 134), dans laquelle l'écart que les deux bords latéraux (126, 128; 136, 138) présentent l'un par rapport à l'autre augmente à mesure qu'augmente l'écart par rapport à la face frontale de boîtier (40).
  29. Buse d'aspiration selon la revendication 28, caractérisée en ce que la zone de la raclette (124) faisant saillie du boîtier de buse d'aspiration (30) est conçue en forme de trapézoïdale en vue en élévation.
  30. Appareil d'aspiration de surfaces dures portatif destiné à retirer et à aspirer un liquide d'une surface dure (106), en particulier d'une vitre de fenêtre (110), avec un groupe d'aspiration (18), un réservoir de liquide sale (28) et un dispositif de séparation (26) destiné à séparer le liquide d'un mélange liquide-air aspiré, et avec une buse d'aspiration (12) selon l'une quelconque des revendications précédentes.
EP16777638.4A 2016-09-28 2016-09-28 Buse d'aspiration et appareil d'aspiration de surfaces dures Active EP3518720B2 (fr)

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PCT/EP2016/073129 WO2018059679A1 (fr) 2016-09-28 2016-09-28 Buse d'aspiration et appareil d'aspiration pour surfaces dures

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CN (1) CN109640766B (fr)
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CN112442964A (zh) * 2019-09-05 2021-03-05 庐江县百树园食品有限公司 一种家禽宰杀用杂物清理装置
CN112932357B (zh) * 2019-12-10 2024-05-24 苏州诚河清洁设备有限公司 用于湿式表面清洁装置的地面吸嘴及湿式表面清洁装置
EP3871578B1 (fr) * 2020-02-27 2023-08-23 Vestel Elektronik Sanayi ve Ticaret A.S. Buse pour un dispositif de nettoyage

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GB504083A (en) † 1938-05-30 1939-04-19 Constant Adolphe Antoine Josep A new or improved scraper or squeegee
WO1998051203A1 (fr) † 1997-05-16 1998-11-19 Goldtime Products Procede et appareil permettant d'eliminer l'eau stagnante de surfaces plates ou arrondies
US6112367A (en) † 1995-12-22 2000-09-05 Superba Electrical appliance for steam cleaning smooth surfaces such as windows
US20030028995A1 (en) † 2001-07-05 2003-02-13 Yasushi Ikeda Squeegee blades for removing cleaning solutions from flat surfaces by manual and motorized cleaning equipment
US7185388B2 (en) † 2002-08-06 2007-03-06 Harper Brush Works, Inc. Power wave floor squeegee and handle connector
WO2012119933A1 (fr) † 2011-03-07 2012-09-13 Goettler Karl Dispositif de nettoyage manuel pour surfaces planes
WO2014198559A1 (fr) † 2013-06-14 2014-12-18 Jacques Beij Réservoir amovible
EP2929819A1 (fr) † 2014-02-27 2015-10-14 Stefan Dietz Dispositif de nettoyage de fenêtres et récipient collecteur

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DE102008004966A1 (de) * 2008-01-11 2009-07-23 Alfred Kärcher Gmbh & Co. Kg Saugdüse
DE102008004965B3 (de) * 2008-01-11 2009-05-14 Alfred Kärcher Gmbh & Co. Kg Tragbares Hartflächenabsauggerät
WO2010018312A2 (fr) * 2008-08-11 2010-02-18 Winddrop Raclette pour surface lisse
RU2015141755A (ru) * 2013-03-04 2017-04-06 Экодроп Аспиратор для всасывания воздуха и жидкости с плоской поверхности и лезвие скребка для аспиратора
WO2015007324A1 (fr) * 2013-07-18 2015-01-22 Alfred Kärcher Gmbh & Co. Kg Appareil portable de nettoyage de surfaces dures
CN104367266B (zh) * 2013-08-13 2018-12-25 胡佛有限公司 手持吸尘器
DE102013021277A1 (de) * 2013-12-17 2015-07-02 Nilfisk-Advance A/S Tragbares Hartflächenabsauggerät
PL3185741T3 (pl) * 2014-08-29 2020-04-30 Alfred Kärcher SE & Co. KG Dysza ssąca i urządzenie odsysające do twardych powierzchni
DE202016100286U1 (de) * 2016-01-22 2016-02-03 Leifheit Ag Saugdüse

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB504083A (en) † 1938-05-30 1939-04-19 Constant Adolphe Antoine Josep A new or improved scraper or squeegee
US6112367A (en) † 1995-12-22 2000-09-05 Superba Electrical appliance for steam cleaning smooth surfaces such as windows
WO1998051203A1 (fr) † 1997-05-16 1998-11-19 Goldtime Products Procede et appareil permettant d'eliminer l'eau stagnante de surfaces plates ou arrondies
US20030028995A1 (en) † 2001-07-05 2003-02-13 Yasushi Ikeda Squeegee blades for removing cleaning solutions from flat surfaces by manual and motorized cleaning equipment
US7185388B2 (en) † 2002-08-06 2007-03-06 Harper Brush Works, Inc. Power wave floor squeegee and handle connector
WO2012119933A1 (fr) † 2011-03-07 2012-09-13 Goettler Karl Dispositif de nettoyage manuel pour surfaces planes
WO2014198559A1 (fr) † 2013-06-14 2014-12-18 Jacques Beij Réservoir amovible
EP2929819A1 (fr) † 2014-02-27 2015-10-14 Stefan Dietz Dispositif de nettoyage de fenêtres et récipient collecteur

Also Published As

Publication number Publication date
PL3518720T3 (pl) 2020-11-30
WO2018059679A1 (fr) 2018-04-05
CN109640766A (zh) 2019-04-16
CN109640766B (zh) 2021-05-14
EP3518720A1 (fr) 2019-08-07
EP3518720B1 (fr) 2020-07-01

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