EP3518720B1 - Suction nozzle and hard-surface suction apparatus - Google Patents
Suction nozzle and hard-surface suction apparatus Download PDFInfo
- Publication number
- EP3518720B1 EP3518720B1 EP16777638.4A EP16777638A EP3518720B1 EP 3518720 B1 EP3518720 B1 EP 3518720B1 EP 16777638 A EP16777638 A EP 16777638A EP 3518720 B1 EP3518720 B1 EP 3518720B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lip
- suction nozzle
- accordance
- squeegee
- pull
- 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.)
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Links
- 230000003014 reinforcing effect Effects 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 35
- 239000000203 mixture Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 description 19
- 238000007789 sealing Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000007704 transition Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 206010064482 Lip exfoliation Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
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 extracting and sucking off a liquid from a hard surface, in particular from a window pane, comprising a suction nozzle housing in which a suction channel which can be connected to a vacuum source is arranged and on the housing end face of which an elastically deformable pull-off lip and an elastically deformable one Support lip are arranged, which protrude from the suction nozzle housing and define a suction space between them, to which the suction channel connects, the pull-off lip on its front end region protruding from the suction nozzle housing having a pull-off lip edge that can be applied to the hard surface to be cleaned, and wherein the support lip on its from the suction nozzle housing protruding front end region has a support lip edge which can be applied to the hard surface to be cleaned, the removal lip edge being arranged behind the support lip edge in relation to a removal direction of the suction nozzle, and wherein the support lip has at least one opening,
- the invention relates to a hard surface suction device with such a suction nozzle.
- a suction nozzle and a hard surface suction device for drawing off and sucking off a liquid from a hard surface are from the WO 2009/086893 A2 known. 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 in a pulling direction along the hard surface in the manner of a manual window puller, so that liquid can be extracted from the hard surface.
- the suction nozzle has a suction nozzle housing which surrounds a suction channel.
- An elastically deformable pull-off lip and an elastically deformable support lip, which protrude from the suction nozzle housing, are arranged on a housing end face of the suction nozzle housing.
- the pull-off lip has a pull-off lip edge on its front end region protruding from the suction nozzle housing, which can be applied to the hard surface to be cleaned
- the support lip has a support lip edge on its front end region protruding from the suction nozzle housing, which is also applied to the hard surface to be cleaned can.
- the pull-off lip and the support lip define between them a suction space, which is connected to the suction channel in the direction facing away from the pull-off 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 suctioned off the hard surface to be cleaned.
- the liquid can be sucked into the suction channel from the hard surface via the suction chamber.
- the hard surface suction device has a dirty liquid container that can hold the extracted liquid.
- the 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 pulling direction, for example from top to bottom.
- the lip edge is arranged in front of the lip edge, so that liquid, which is located on the hard surface, builds up on the lip edge when the suction nozzle moves and from there reaches the suction lip via the at least one opening in the lip, from which from it is sucked into the suction channel.
- the pull-off lip edge which is arranged behind the support lip edge in relation to the pull-off direction, slides along the hard surface and has the effect that, if possible, all the liquid is drawn off the hard surface, so that the hard surface is cleaned without streaks.
- the WO 2016/029967 A1 discloses a suction nozzle with the features of the preamble of claim 1.
- the object of the present invention is therefore to develop a suction nozzle and a hard surface suction device of the type described in the introduction in such a way that a better cleaning result can be achieved.
- a pull-off lip which has at least one pull-off lip extension, which forms a pull-off lip edge and is oriented obliquely or perpendicularly to a longitudinal section of the pull-off lip protruding from the housing end face.
- the pull-off lip forms a longitudinal section protruding from the front of the housing, which is followed by the at least one pull-lip extension, which is inclined to the longitudinal section and forms a pull-lip edge at its free end.
- the lip extension protrudes obliquely or perpendicularly from the longitudinal section of the lip and can be pressed with its free end, which forms a lip edge, against the hard surface to be cleaned.
- a pull-off lip extension inclined to the longitudinal section which forms a pull-off lip edge at its free end, has the advantage that the deformable pull-off lip can contact the hard surface to be cleaned practically linearly in a wide variety of orientations of the suction nozzle relative to the hard surface.
- the user does not have to be careful to align the suction nozzle at a certain angle to the hard surface; rather, the provision of a longitudinal section and a protruding lip extension projecting from the longitudinal section in the direction of the hard surface ensure that this is practically independent of the Alignment of the suction nozzle relative to the hard surface, a line contact of the pull lip with the hard surface can be achieved. This in turn means that the cleaning result can be improved, in particular streak-free cleaning can be achieved.
- the at least one pull-lip extension is preferably designed like a hook.
- the pull-off lip has a pull-off lip extension which engages behind the lip edge in relation to the pull-off direction.
- the pull-off lip has a longer and a shorter leg, which are oriented obliquely or perpendicular to one another, the longer leg forming the longitudinal section of the pull-off lip and the shorter leg forming a pull-off lip extension of the pull-off lip.
- the pull lip is L-shaped.
- the pulling lip has a single pulling lip extension, which can be pressed with its pulling lip edge against the hard surface to be cleaned, as was explained above.
- the peeling lip has two peeling lip extensions, each of which forms a peeling lip edge and is based on the Point longitudinal section in different directions.
- the pull-off lip has two pull-off lip extensions, which are designed as a mirror image of a central plane of the longitudinal section of the pull-off lip.
- the pull-off 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, the two arms protruding from an elongated middle part of the peeling lip on opposite sides and the middle part den Longitudinal section of the pull lip.
- the length of the longitudinal section is at least six times the length of the 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 face of the suction nozzle housing, and the length of the pull-off lip extension is the vertical distance of the pull-lip edge arranged at the free end of the pull-off lip extension from a central plane of the longitudinal section.
- the length of the pull-off 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 pull-off lip is designed to be straight in the undeformed basic position of the pull-off lip.
- An undeformed basic position is a position of the pull-off lip in which it does not contact the hard surface to be cleaned and is therefore not subject to any deformation caused by pressing against the hard surface.
- the longitudinal section is advantageously formed in a straight line in this basic position of the pull-off lip.
- the longitudinal section preferably extends parallel or collinear to a central axis of the suction nozzle housing.
- the pull-off lip has a pull-off lip extension which, in the undeformed basic position of the pull-off lip, rests against the front end region of the support lip.
- the distance between the front end region of the support lip and a pull-off lip extension is as small as possible.
- the support lip prefferably has an end face at its front end region, against which a pull-off lip extension rests with a contact surface in the undeformed basic position of the pull-off lip.
- a pull-off lip extension thus touches the support lip with its front end region, in that a contact surface of the pull-off lip extension rests against an end face of the support lip.
- the end face of the support lip forms a wedge surface which extends to the edge of the support lip.
- the contact surface of the pull-off lip extension advantageously forms an inclined surface inclined at an obtuse angle to an underside of the longitudinal section.
- the inclined surface can extend from the edge of the pull-off lip to the underside of the longitudinal section of the pull-off lip facing the support lip.
- the underside can be flat in the undeformed basic position of the pull 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 along the hard surface to be cleaned in the pulling direction.
- the liquid that builds up on the support lip can reach the suction space between the support lip and the pull-off lip via the at least one end-side recess of the support lip. It is advantageous if a plurality of recesses are arranged on the lip edge.
- the support lip has a plurality of depressions on its underside of the support lip facing away from the pull-off lip, each of which opens into a recess arranged on the edge of the support lip. Liquid that builds up on the hard lip to be cleaned when the supporting lip is guided along can pass over the Recesses, which are arranged on the underside of the support lip, reach the recesses arranged on the end face of the support lip and flow through them into the suction space.
- the support lip prefferably has a plurality of elevations on its upper side of the support lip facing the pull-off lip.
- the elevations can form spacers, so that it is ensured that the pull-off lip does not lie flat on the support lip even in the deformed state when the suction nozzle is moved along the hard surface to be cleaned. Rather, the elevations of the support lip ensure that liquid can get into the suction channel via the suction space.
- the elevations which are arranged on the upper side of the supporting lips extend to an end face which has the supporting lip at its front end region.
- a pull-off lip extension is supported with a contact surface on the end face of the support lip when the pull-off lip assumes its undeformed basic position.
- the elevations arranged on the upper side of the supporting lips form rib-like flow guide elements.
- the shape of the flow guide elements can be adapted to the direction of flow of the suction flow, which is formed in the suction space when the suction channel is connected to a vacuum source. Flow losses can be kept low.
- the elevations are arranged in a fan shape.
- the distances between elevations immediately adjacent to one another increase with increasing distance from a central axis of the suction nozzle housing. It can be provided, for example, that in a central position with respect to the central axis In the region of the support lip between two immediately adjacent elevations, only a single end recess is arranged, whereas the distance between the immediately adjacent elevations increases with increasing distance from the central axis, so that a plurality of end recesses are arranged between two immediately adjacent elevations.
- the pull-off 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 be designed, for example, in the manner of ribs which are formed on the pull-off lip and / or on the support lip in the region of the side edges.
- the provision of the side walls reduces the lateral inflow of false air into the suction space between the pull-off lip and the support lip.
- the lateral closing of the suction space thus optimizes the suction flow which forms between the pull-lip edge resting on the hard surface and the support lip edge resting on the hard surface and in this way improves the cleaning result.
- a further improvement of the cleaning result is achieved in an advantageous embodiment of the invention in that the pull-off lip has a first and a second side edge, which limit the width of the pull-off lip, and in that the pull-off lip is regionally reinforced at a distance from the side edges. Due to the area-by-area reinforcement of the pull-off lip, it obtains a non-uniform bending stiffness, namely that the bending stiffness of the pull-off 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 bending stiffness in some areas improves the cleaning result in cases in which an edge region of a hard surface, in particular an edge region of a window pane, is cleaned by means of the suction nozzle, with unevenness occurring in the edge region.
- Such bumps are caused, for example, by sealing strips formed that limit a window pane. If the edge area of the window pane is cleaned by means of the suction nozzle, the case can occur that the pull-off lip sits with its edge area adjacent to a side edge on a sealing strip and thereby stands out from the window pane.
- the pull-off lip gains greater bending rigidity in some areas. This can reduce the risk of the pull-off lip inadvertently lifting off the window pane when it rests on a sealing strip with its outer edge region.
- the pull-off lip has at least one reinforcing rib on its upper side of the pull-off lip 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 pull-off lip.
- a pair of reinforcing ribs is preferably arranged at a distance from each side edge.
- the pull-off lip has at least two pairs of reinforcing ribs on the top of the pull-off lip, a first pair of reinforcing ribs being arranged at a short distance from a first side edge, and a second pair of reinforcing ribs at a short distance from the second side edge the pull-off lip is arranged.
- the two pairs of reinforcing ribs advantageously have the same distance from the nearest side edge of the pull-off lip.
- the distance that the pairs of reinforcing ribs have from the respectively 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 approximately 0.5 mm to approximately 3 mm.
- the at least one reinforcing rib has a support surface which, when the pull-off lip is deformed from the undeformed basic position, bears against the front face of the housing in the direction facing away from the support lip.
- the support surface of the reinforcing ribs can be at a distance from the front face of the housing, but if the pull-off lip is pressed against the hard surface when cleaning a hard surface, the pull-off lip is deformed and the support surface of the reinforcing ribs comes into contact with the front face of the housing.
- the pull-off lip can be supported on the reinforcing ribs on the front face of the housing, and this in turn has the consequence that the pull-off lip has a greater bending stiffness in the region of the reinforcing ribs than in regions which have no reinforcing ribs.
- the length of the area of the pull-off lip protruding from the suction nozzle housing is advantageously at least 18 mm, in particular 20 to 30 mm.
- the length here is understood to mean the distance between the front face of the housing and the front end of the pull-off 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 pull lip are aligned parallel to one another, so that the distance that the two side edges have from one another, that is to say the width of the pull lip, is constant over the entire length of the pull lip.
- the area of the pull-off lip protruding from the suction nozzle housing can be designed in a rectangular shape.
- the side edges of the pull-off lip have an increasing distance from one another with increasing distance from the housing front side of the suction nozzle housing, that is to say that the width of the pull-off lip increases with increasing distance from the housing front side increases.
- the area of the pull-off lip protruding from the suction nozzle housing can be designed trapezoidal in plan view, for example.
- the side edges of the pull-off lip are curved outward 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 can be guided along a window pane in a pull-off direction in the manner of a manual window puller.
- the hard surface suction device has a suction unit as well as a dirty liquid tank and a separating device, wherein liquid can be separated from an absorbed liquid-air mixture by means of the separating device.
- the hard surface suction device has a suction nozzle of the type explained above.
- a suction flow can be generated in the suction space between the pull-off lip and the support lip and in the suction channel adjoining the suction space, under the effect of which a mixture of liquid and air can be sucked into the suction space.
- the sucked-in liquid can be separated from the mixture of liquid and air with the aid of the separating device and transferred to the dirty liquid tank.
- the sucked-in air can be released into the environment via air outlet openings of 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, the overall with the reference number 10 is occupied and which has an advantageous embodiment of a suction nozzle 12 according to the invention.
- liquid can be drawn off and sucked up from a hard surface, in particular from a window pane.
- the hard surface suction device can be moved along the hard surface by the user in the manner of a manual window puller.
- the portable hard surface suction device thus forms a window cleaning device.
- the hard surface suction device 10 comprises a basic 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 basic housing 14.
- the suction unit 18 is in flow connection via a suction line 24 running in the basic housing 14 with a separating device 26 arranged in the basic 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 can be arranged on the side of the basic housing 14 facing away from the handle 16 and can be separated from the basic housing 14 for emptying.
- the suction nozzle 12 adjoins the base housing 14 at the top.
- the suction nozzle 12 has a suction nozzle housing 30 and can be detachably connected to the basic 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. How especially out Figure 7 becomes clear, the suction nozzle housing 30 surrounds a suction channel 38, which extends from a housing end face 40 to a housing rear side 42.
- the housing end face 40 faces away from the basic housing 14, whereas the rear side 42 of the housing faces the basic housing 14.
- An elastically deformable pull-off lip 44 and an elastically deformable support lip 46 are held on the housing end face 40 and protrude forwardly from the suction nozzle housing 30 in the direction facing away from the suction channel 38.
- a silicone material can be used to produce the pull-off lip 44.
- the support lip 46 is advantageously molded onto the lower housing half-shell 34.
- the lower housing half-shell 34 can form a common injection-molded part with two components together with the support lip 46.
- 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 which faces the suction channel 38 and 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 end face 40.
- the longitudinal section 50 is designed in a straight line.
- the longitudinal section 50 is followed by a hook-like pull-off lip extension 52 which is inclined to the longitudinal section 50 and which forms a pull-off lip edge 54 at its free end.
- the pull-off lip edge 54 can be placed against a hard surface to be cleaned, so that the pull-off lip 44 makes linear contact with the hard surface to be cleaned.
- the support lip 46 also protrudes from the housing end face 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 on the pull lip edge 54.
- the support lip 46 has a support lip top 58 facing the pull lip 44 and a support lip bottom 60 facing away from the pull lip 54.
- a wedge-shaped end face 62 extends from the support lip 46 in the direction of the top lip 58, on which the pull-off lip 44 rests flat in the undeformed basic position by means of a contact surface 64 designed complementarily to the end face 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 on the support lip top 58 has a plurality of elevations 70, which are arranged symmetrically to a central axis 72 of the suction nozzle housing 30, the distance between two immediately adjacent elevations 70 increasing 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 upper side 58 of the support lip.
- the support lip 46 On the support lip edge 56, the support lip 46 has a plurality of openings in the form of recesses 76, which are designed in a semicircular shape.
- the support lip 46 On the underside of the support lip 60, the support lip 46 has a multiplicity of depressions 78 which each open into a recess 76.
- the pull-off lip 44 defines, together with the support lip 46, a suction space 80 which is delimited on a first side edge 82 of the pull-off lip 44 by a first side wall 84 and on a second side edge 86 of the pull-off lip 44 by a second side wall 88.
- the two side walls 84, 88 are integrally connected to the pull lip 44.
- the distance between the first side edge 82 and the second side edge 86 defines the width of the pull lip 44.
- the pull-off lip 44 has a pull-off lip top 92 facing away from the support lip 46 and the longitudinal section 50 has the already mentioned bottom 94 facing the support lip 46.
- the underside 94 is flat in the undeformed basic position of the pull-off 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 upper side 92 of the pulling lip, at a short distance from the first side edge 82, and at a short distance from the second side edge 86 of the upper side of the pulling lip 44 has a second pair of reinforcing ribs 100, 102 on the upper side 92 of the pulling lip.
- 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 end face 40, each forming a support surface 104 facing the housing end face 40, which is aligned perpendicular to the longitudinal axis 66 of the longitudinal section 50.
- the distance A1 that the first pair of reinforcing ribs 96, 98 occupies from the first side edge 82 is identical to the distance A2 that the second pair of reinforcing ribs 100, 102 occupies from the second side edge 86.
- the distance is about 4 to 8 mm.
- the distance between the two reinforcing ribs 96, 98 of the first pair of reinforcing ribs is approximately 1 to 3 mm in the exemplary embodiment shown 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 area of the pull-off lip 44 protruding from the suction nozzle housing 30 in the exemplary embodiment shown is at least 18 mm, preferably 20 to 30 mm, and the length L2 of the area 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 this to clean a hard surface.
- Figure 7 The cleaning of a hard surface 106 is illustrated, with only the suction nozzle 12 being shown schematically in a longitudinal section in the region of the central axis 72 in order to achieve a simpler overview.
- the suction nozzle 12 can be moved along the hard surface 106 in a pull-off direction 108, in the exemplary embodiment shown from top to bottom, the pull-off lip edge 54 and the supporting lip edge 56 contacting the hard surface 106.
- the support lip edge 56 is arranged in front of the pull-lip edge 54.
- the support lip edge 56 is at a distance from the removal lip edge 54 due to the deformation of the support lip 46 and the deformation of the pulling lip 44.
- the pull-off lip extension 52 engages behind the support lip 46 in relation to the pull-off direction 108.
- the suction nozzle 12 If the suction nozzle 12 is moved along the hard surface 106 in the pull-off direction 108, liquid which adheres to the hard surface 106 accumulates in front of the support lip 46 and passes through the depressions 78 arranged on the underside 60 of the support lip and the recesses arranged on the edge 56 of the support lip 76 into the suction space 80 between the support lip 46 and the pull-off lip 44.
- the suction nozzle 12 is of course connected to the base housing 14 of the hard surface suction device 10 and a suction flow is generated by the suction unit 18, under the effect of which the liquid in the suction space 80 reaches the separating device 26 via the suction channel 38. The liquid flows from the separating device 26 into the dirty liquid container 28.
- the removal lip 44 contacts the hard surface 106 to be cleaned linearly even when the removal lip 44 is deformed from its basic position, as shown in FIG Figure 7 is illustrated.
- the linear contact ensures that the hard surface 106 can be cleaned without streaks, the cleaning result being practically independent of the force with which the user presses the pull-off 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 to the surface 106 to be cleaned.
- FIGS 8 and 9 illustrate the cleaning of an edge area of a hard surface in the form of a window pane 110, which is delimited by a sealing strip 112. If the suction nozzle 12 is moved along the window pane 110, the case may occur that the pull-off lip 44, like the support lip 46, rests on the sealing strip 112 with its outer edge region. This can result in the support lip 46 and the pull-off lip 44 lifting off from the window pane 110 in the region immediately adjacent to the sealing strip 112. The lifting off of the support lip 46 does not have any major adverse effect on the cleaning result, but the lifting off of the pulling lip 44 could lead to 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 pull-off lip top side 92 at a short distance from the side edges 82, 86.
- the consequence of this is that the pull-off lip 44 has a higher bending stiffness in the region of the reinforcing ribs 96, 98, 100 and 102, since the reinforcing ribs 96, 98, 100 and 102 counteract a deformation of the pull-off lip 44.
- the reinforcing ribs When the pull-off lip 44 is deformed in the direction facing away from the window pane 110, the reinforcing ribs, which are arranged adjacent to the sealing strip 112, are supported with their support surface 104 on the housing end face 40 and therefore counteract a deformation of the pull-off lip 44.
- the provision of the reinforcing ribs 96, 98, 100 and 102 thus leads to an improved cleaning result when cleaning an edge region of a window pane.
- FIG Figure 10 shows an alternative embodiment of a suction nozzle according to the invention, which is denoted overall by 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 end face 40.
- the suction nozzle 120 in FIG Figure 10 schematically shown suction nozzle 120 use a pull-off lip 124, the width of which increases with increasing distance from the housing end face 40.
- the pull-off lip 124 has a first side edge 126 and a second side edge 128, both of which are designed in a straight line and run obliquely outwards, so that the distance that the two side edges 126, 128 have from one another becomes uniform with increasing distance from the housing end face 40 enlarged.
- the area of the pull-off lip 124 protruding from the suction nozzle housing 30 is designed to be trapezoidal.
- the suction nozzle 120 also has a pull-in lip 124 in addition to the pull-off lip Figure 10 Support lip, not shown, is used, the width of the support lip also increasing uniformly with increasing distance from the housing end face 40.
- FIG 11 A further alternative embodiment of a suction nozzle according to the invention is shown schematically, which is denoted overall by reference number 130.
- the suction nozzle is largely identical to that in Figure 10 Suction nozzle 120 shown.
- the suction nozzle 130 has a pull-off lip 134, the first side edge 136 and second side edge 138 of which are curved outward in an arc shape.
- the suction nozzle 130 also has an in addition to the pull-off lip 134 Figure 11 support lip, not shown.
- the support lip can also be curved outward in an arc shape Have side edges, which thus show practically the same course as the side edges 136, 138 of the pull-off lip 134.
- Figure 12 shows a pull-off lip 140 which is configured similarly to the pull-off lip 44 explained in detail above.
- the pull-off lip 140 has a longitudinal section 142, from which, as in the case of the pull-off lip 44, a single pull-off lip extension 144 projects laterally.
- the pull-off lip extension 144 is designed essentially in the manner of a right-angled triangle and has an inclined surface 146 which is oriented at an angle of approximately 135 ° to the underside 148 of the longitudinal section 142.
- the peel lip extension 144 has a front end surface 150 that is oriented at right angles to a central plane 152.
- the pull-off lip 140 is essentially L-shaped.
- Figure 13 schematically shows a peeling lip 160, which also has a single peeling lip extension 164.
- the pull-off 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 projects from the underside 172 of a longitudinal section 173 and is oriented at an angle of approximately 135 ° to the underside 172, and the lower end surface section 168, which together with the inclined surface 170, the pull lip edge 174 of the pull-off lip 160 is oriented perpendicular to the central plane 176 of the pull-off 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 protrudes downward from the underside 186 of a longitudinal section 190 and the second lip extension 184 protrudes upward from the upper side 188 of the longitudinal section 190.
- the pull-off lip extensions 182, 184 form a common front end surface 192 of the pull-off lip 180, which is oriented perpendicular to a central plane 194 of the pull-off lip 180.
- a lower bevel surface 196 of the first peel lip extension 192 extends from the bottom 186 to a first peel lip edge 198, and an upper bevel surface 200 of the second peel lip extension 184 extends from the top 188 to a second peel lip edge 202.
- Figure 15 schematically shows a pull-off lip 210 which is essentially T-shaped, a first pull-off lip extension 212 projecting perpendicularly from an underside 214 of a longitudinal section 215 and a second pull-off lip extension 216 projecting vertically from an upper side 218 of the longitudinal section 215.
- a peel lip 230 is shown schematically, in which a first peel lip extension 232 and a second peel lip extension 234 are oriented obliquely to a central plane 236 and are essentially rectangular.
- the pull-off lip 230 is essentially Y-shaped.
- Figure 17 schematically shows a pull-off lip 240 with a first pull-off lip extension 242, which protrudes from an underside 244 of a longitudinal section 254 and forms a first arcuate transition surface 246, which is concave and adjoins the underside 244.
- the pull-off lip 240 has a second pull-off 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 designed in a concave manner and adjoins the upper side 250.
- the first lip extension 242, together with the longitudinal portion 254 of the lip 240 forms a lower end surface 256 of the lip 240
- the second lip extension forms together with the longitudinal portion 254 an upper end surface 258 of the pull lip 240.
- the two end surfaces 256, 258 are aligned at an obtuse angle to one another and each is designed flat.
- Figure 18 schematically shows a peeling lip 270 with a first peeling lip extension 272, which has a first inclined surface 276 projecting from the underside 274 of a longitudinal section 290, and with a second peeling lip extension 278, which projects from an upper side 280 of the longitudinal section 290 and has a second inclined surface 282 connects to the top 280.
- the first peeling lip extension 272 forms, together with the longitudinal section 290 of the peeling lip 270, a lower end surface 292, and the second peeling lip extension 278 forms together with the longitudinal section 290 an upper end surface 294.
- the two end surfaces 292, 294 are each flat and aligned at an obtuse angle to one another.
- Figure 19 schematically shows a peeling lip 300 which has a first peeling lip extension 302 and a second peeling lip extension 304, the two peeling lip extensions 302, 304 forming an arcuate, concave end surface 308 together with a longitudinal section 306 of the peeling lip 300.
- 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 rectilinear end surface 330 oriented perpendicularly to a central plane 328.
- pull-off lips like the pull-off lip 44, can be spaced in regions from their side edges be reinforced in order to impart a non-uniform bending stiffness to the pull-off lip, as explained in detail above using the example of the pull-off lip 44.
- Peeling lips 140 and 160 shown can have reinforcing ribs on their top lip spacing 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 pull-off lips shown are used, which are each arranged at a distance from a side edge. It can be provided here that reinforcing ribs are arranged both on the upper side of the pulling lip and on the lower side of the pulling lip, whereby these stand out less far from the underside or the upper side of the respective longitudinal section than the edges of the pulling lip extensions, so that it is ensured that the edges of the pulling lip are in contact the hard surface to be cleaned can be pressed without the reinforcing ribs contacting 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)
Description
Die Erfindung betrifft eine Saugdüse für ein tragbares Hartflächenabsauggerät zum Abziehen und Absaugen einer Flüssigkeit von einer Hartfläche, insbesondere von einer Fensterscheibe, umfassend ein Saugdüsengehäuse, in dem ein an eine Unterdruckquelle anschließbarer Saugkanal angeordnet ist und an dessen Gehäusestirnseite eine elastisch verformbare Abziehlippe und eine elastisch verformbare Stützlippe angeordnet sind, die aus dem Saugdüsengehäuse herausragen und zwischen sich einen Saugraum definieren, an den sich der Saugkanal anschließt, wobei die Abziehlippe an ihrem aus dem Saugdüsengehäuse herausragenden vorderen Endbereich eine an die zu reinigende Hartfläche anlegbare Abziehlippenkante aufweist, und wobei die Stützlippe an ihrem aus dem Saugdüsengehäuse herausragenden vorderen Endbereich eine an die zu reinigende Hartfläche anlegbare Stützlippenkante aufweist, wobei die Abziehlippenkante bezogen auf eine Abziehrichtung der Saugdüse hinter der Stützlippenkante angeordnet ist, und wobei die Stützlippe mindestens eine Durchbrechung aufweist, und wobei die Abziehlippe einen von der Gehäusestirnseite in die dem Saugkanal abgewandte Richtung nach vorne abstehenden Längsabschnitt aufweist.The invention relates to a suction nozzle for a portable hard surface suction device for extracting and sucking off a liquid from a hard surface, in particular from a window pane, comprising a suction nozzle housing in which a suction channel which can be connected to a vacuum source is arranged and on the housing end face of which an elastically deformable pull-off lip and an elastically deformable one Support lip are arranged, which protrude from the suction nozzle housing and define a suction space between them, to which the suction channel connects, the pull-off lip on its front end region protruding from the suction nozzle housing having a pull-off lip edge that can be applied to the hard surface to be cleaned, and wherein the support lip on its from the suction nozzle housing protruding front end region has a support lip edge which can be applied to the hard surface to be cleaned, the removal lip edge being arranged behind the support lip edge in relation to a removal direction of the suction nozzle, and wherein the support lip has at least one opening, and wherein the pull-off lip has a longitudinal section projecting forward from the housing end in the direction facing away from the suction channel.
Außerdem betrifft die Erfindung ein Hartflächenabsauggerät mit einer derartigen Saugdüse.In addition, the invention relates to a hard surface suction device with such a suction nozzle.
Eine Saugdüse und ein Hartflächenabsauggerät zum Abziehen und Absaugen einer Flüssigkeit von einer Hartfläche sind aus der
Die Saugdüse weist ein Saugdüsengehäuse auf, das einen Saugkanal umgibt. An einer Gehäusestirnseite des Saugdüsengehäuses sind eine elastisch verformbare Abziehlippe und eine elastisch verformbare Stützlippe angeordnet, die aus dem Saugdüsengehäuse herausragen. Die Abziehlippe weist an ihrem aus dem Saugdüsengehäuse herausragenden vorderen Endbereich eine Abziehlippenkante auf, die an die zu reinigende Hartfläche angelegt werden kann, und die Stützlippe weist an ihrem aus dem Saugdüsengehäuse herausragenden vorderen Endbereich eine Stützlippenkante auf, die ebenfalls an die zu reinigende Hartfläche angelegt werden kann. Die Abziehlippe und die Stützlippe definieren zwischen sich einen Saugraum, an den sich in der der Abziehlippenkante und der Stützlippenkante abgewandten Richtung der Saugkanal anschließt. Der Saugkanal kann an eine Unterdruckquelle, insbesondere an ein Saugaggregat, des Hartflächenabsauggeräts angeschlossen werden, so dass sich eine Saugströmung ausbildet, unter deren Wirkung Flüssigkeit von der zu reinigenden Hartfläche abgesaugt werden kann. Die Flüssigkeit kann von der Hartfläche über den Saugraum in den Saugkanal eingesaugt werden. Das Hartflächenabsauggerät weist einen Schmutzflüssigkeitsbehälter auf, der die abgesaugte Flüssigkeit aufnehmen kann.The suction nozzle has a suction nozzle housing which surrounds a suction channel. An elastically deformable pull-off lip and an elastically deformable support lip, which protrude from the suction nozzle housing, are arranged on a housing end face of the suction nozzle housing. The pull-off lip has a pull-off lip edge on its front end region protruding from the suction nozzle housing, which can be applied to the hard surface to be cleaned, and the support lip has a support lip edge on its front end region protruding from the suction nozzle housing, which is also applied to the hard surface to be cleaned can. The pull-off lip and the support lip define between them a suction space, which is connected to the suction channel in the direction facing away from the pull-off 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 suctioned off the hard surface to be cleaned. The liquid can be sucked into the suction channel from the hard surface via the suction chamber. The hard surface suction device has a dirty liquid container that can hold the extracted liquid.
Zum Absaugen einer Hartfläche werden die Abziehlippenkante und die Stützlippenkante gegen die zu reinigenden Hartfläche gepresst und die Saugdüse wird in einer Abziehrichtung an der Hartfläche entlanggeführt, beispielsweise von oben nach unten. Bezogen auf die Abziehrichtung ist die Stützlippenkante vor der Abziehlippenkante angeordnet, so dass sich Flüssigkeit, die sich an der Hartfläche befindet, bei einer Bewegung der Saugdüse an der Stützlippenkante aufstaut und von dieser über die mindestens eine Durchbrechung der Stützlippe in den Saugraum gelangt, von dem aus sie in den Saugkanal gesaugt wird. Die bezogen auf die Abziehrichtung hinter der Stützlippenkante angeordnete Abziehlippenkante gleitet an der Hartfläche entlang und bewirkt, dass nach Möglichkeit sämtliche Flüssigkeit von der Hartfläche abgezogen wird, so dass die Hartfläche streifenfrei gereinigt wird.To vacuum a hard surface, the 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 pulling direction, for example from top to bottom. Relative to the pull-off direction, the lip edge is arranged in front of the lip edge, so that liquid, which is located on the hard surface, builds up on the lip edge when the suction nozzle moves and from there reaches the suction lip via the at least one opening in the lip, from which from it is sucked into the suction channel. The pull-off lip edge, which is arranged behind the support lip edge in relation to the pull-off direction, slides along the hard surface and has the effect that, if possible, all the liquid is drawn off the hard surface, so that the hard surface is cleaned without streaks.
Die
Bekannte Saugdüsen und Hartflächenabsauggeräte haben häufig das Problem, dass eine streifenfreie Reinigung der Hartfläche nur dann erzielt wird, wenn der Benutzer die Stützlippe und die Abziehlippe in einem bestimmten Winkel zur Hartfläche ausrichtet und das Sauggerät mit einer bestimmten Kraft gegen die Hartfläche drückt. Werden diese Bedingungen nicht eingehalten, so besteht das Risiko, dass Flüssigkeitsreste auf der Hartfläche verbleiben, die das Reinigungsergebnis beeinträchtigen.Known suction nozzles and hard surface suction devices frequently have the problem that streak-free cleaning of the hard surface is only achieved if the user aligns the support lip and the pulling lip at a certain angle to the hard surface and presses the suction device against the hard surface with a certain force. If these conditions are not adhered to, there is a risk that liquid residues remain on the hard surface and impair the cleaning result.
Aufgabe der vorliegenden Erfindung ist es daher, eine Saugdüse und ein Hartflächenabsauggerät der eingangs beschriebenen Art derart weiterzubilden, dass ein besseres Reinigungsergebnis erzielt werden kann.The object of the present invention is therefore to develop a suction nozzle and a hard surface suction device of the type described in the introduction in such a way that a better cleaning result can be achieved.
Diese Aufgabe wird durch eine Saugdüse mit den Merkmalen von Patentanspruch 1 gelöst.This object is achieved by a suction nozzle with the features of claim 1.
Bei der erfindungsgemäßen Saugdüse kommt eine Abziehlippe zum Einsatz, die mindestens einen Abziehlippenfortsatz aufweist, der eine Abziehlippenkante ausbildet und schräg oder senkrecht zu einem von der Gehäusestirnseite abstehenden Längsabschnitt der Abziehlippe ausgerichtet ist. Die Abziehlippe bildet einen von der Gehäusestirnseite nach vorne abstehenden Längsabschnitt aus, an den sich der mindestens eine, zum Längsabschnitt geneigte Abziehlippenfortsatz anschließt, der an seinem freien Ende eine Abziehlippenkante ausbildet. Der Abziehlippenfortsatz steht schräg oder senkrecht vom Längsabschnitt der Abziehlippe ab und kann mit seinem freien Ende, das eine Abziehlippenkante ausbildet, gegen die zu reinigende Hartfläche gepresst werden.In the suction nozzle according to the invention, a pull-off lip is used, which has at least one pull-off lip extension, which forms a pull-off lip edge and is oriented obliquely or perpendicularly to a longitudinal section of the pull-off lip protruding from the housing end face. The pull-off lip forms a longitudinal section protruding from the front of the housing, which is followed by the at least one pull-lip extension, which is inclined to the longitudinal section and forms a pull-lip edge at its free end. The lip extension protrudes obliquely or perpendicularly from the longitudinal section of the lip and can be pressed with its free end, which forms a lip edge, against the hard surface to be cleaned.
Der Einsatz eines zum Längsabschnitt geneigten Abziehlippenfortsatzes, der an seinem freien Ende eine Abziehlippenkante ausbildet, hat den Vorteil, dass die verformbare Abziehlippe die zu reinigende Hartfläche in unterschiedlichsten Ausrichtungen der Saugdüse relativ zur Hartfläche praktisch linienförmig kontaktieren kann. Im Unterschied zu bekannten Saugdüsen muss der Benutzer nicht sorgfältig darauf achten, dass er die Saugdüse in einem bestimmten Winkel zur Hartfläche ausrichtet, vielmehr wird durch die Bereitstellung eines Längsabschnitts und eines vom Längsabschnitt in Richtung auf die Hartfläche abstehenden Abziehlippenfortsatzes sichergestellt, dass praktisch unabhängig von der Ausrichtung der Saugdüse relativ zur Hartfläche ein Linienkontakt der Abziehlippe mit der Hartfläche erzielt werden kann. Dies wiederum hat zur Folge, dass das Reinigungsergebnis verbessert werden kann, insbesondere kann eine streifenfreie Reinigung erzielt werden.The use of a pull-off lip extension inclined to the longitudinal section, which forms a pull-off lip edge at its free end, has the advantage that the deformable pull-off lip can contact the hard surface to be cleaned practically linearly in a wide variety of orientations of the suction nozzle relative to the hard surface. In contrast to known suction nozzles, the user does not have to be careful to align the suction nozzle at a certain angle to the hard surface; rather, the provision of a longitudinal section and a protruding lip extension projecting from the longitudinal section in the direction of the hard surface ensure that this is practically independent of the Alignment of the suction nozzle relative to the hard surface, a line contact of the pull lip with the hard surface can be achieved. This in turn means that the cleaning result can be improved, in particular streak-free cleaning can be achieved.
Bevorzugt ist der mindestens eine Abziehlippenfortsatz hakenartig ausgestaltet.The at least one pull-lip extension is preferably designed like a hook.
Von besonderem Vorteil ist es, wenn die Abziehlippe einen Abziehlippenfortsatz aufweist, der die Stützlippenkante bezogen auf die Abziehrichtung hintergreift.It is particularly advantageous if the pull-off lip has a pull-off lip extension which engages behind the lip edge in relation to the pull-off direction.
Es kann beispielsweise vorgesehen sein, dass die Abziehlippe einen längeren und einen kürzeren Schenkel aufweist, die schräg oder senkrecht zueinander ausgerichtet sind, wobei der längere Schenkel den Längsabschnitt der Abziehlippe ausbildet und der kürzere Schenkel einen Abziehlippenfortsatz der Abziehlippe ausbildet.It can be provided, for example, that the pull-off lip has a longer and a shorter leg, which are oriented obliquely or perpendicular to one another, the longer leg forming the longitudinal section of the pull-off lip and the shorter leg forming a pull-off lip extension of the pull-off lip.
Bei einer vorteilhaften Ausführungsform der Erfindung ist die Abziehlippe L-förmig ausgestaltet.In an advantageous embodiment of the invention, the pull lip is L-shaped.
Es kann vorgesehen sein, dass die Abziehlippe einen einzigen Abziehlippenfortsatz aufweist, der mit seiner Abziehlippenkante gegen die zu reinigende Hartfläche gepresst werden kann, wie dies voranstehend erläutert wurde. Es kann aber auch vorgesehen, dass die Abziehlippe zwei Abziehlippenfortsätze aufweist, die jeweils eine Abziehlippenkante ausbilden und bezogen auf den Längsabschnitt in unterschiedliche Richtungen weisen. Dies gibt beispielsweise die Möglichkeit, die Abziehlippe wahlweise in einer ersten oder einer zweiten Orientierung am Saugdüsengehäuse zu montieren, wobei in einer ersten Orientierung ein erster Abziehlippenfortsatz in Richtung auf die zu reinigende Hartfläche geneigt ist und dessen Abziehlippenkante gegen die Hartfläche gepresst werden kann, und wobei in einer zweiten Orientierung der zweite Abziehlippenfortsatz in Richtung auf die zu reinigende Hartfläche geneigt ist und dessen Abziehlippenkante gegen die Hartfläche gepresst werden kann.It can be provided that the pulling lip has a single pulling lip extension, which can be pressed with its pulling lip edge against the hard surface to be cleaned, as was explained above. However, it can also be provided that the peeling lip has two peeling lip extensions, each of which forms a peeling lip edge and is based on the Point longitudinal section in different directions. This gives, for example, the possibility of mounting the pull-off lip optionally in a first or a second orientation on the suction nozzle housing, wherein in a first orientation a first pull-off lip extension is inclined in the direction of the hard surface to be cleaned and the edge of the pull-off lip can be pressed against the hard surface, and wherein in a second orientation the second lip extension is inclined in the direction of the hard surface to be cleaned and the edge of the pull lip can be pressed against the hard surface.
Beispielsweise kann vorgesehen sein, dass die Abziehlippe zwei Abziehlippenfortsätze aufweist, die spiegelbildlich zu einer Mittelebene des Längsabschnitts der Abziehlippe ausgestaltet sind.For example, it can be provided that the pull-off lip has two pull-off lip extensions, which are designed as a mirror image of a central plane of the longitudinal section of the pull-off lip.
Insbesondere kann die Abziehlippe T-förmig oder Y-förmig ausgestaltet sein. Ein erster Arm der Abziehlippe kann einen ersten Abziehlippenfortsatz mit einer ersten Abziehlippenkante ausbilden, und ein zweiter Arm der Abziehlippe kann einen zweiten Abziehlippenfortsatz mit einer zweiten Abziehlippenkante ausbilden, wobei die beiden Arme auf einander gegenüberliegenden Seiten von einem länglichen Mittelteil der Abziehlippe abstehen und das Mittelteil den Längsabschnitt der Abziehlippe ausbildet.In particular, the pull-off 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, and a second arm of the peeling lip can form a second peeling lip extension with a second peeling lip edge, the two arms protruding from an elongated middle part of the peeling lip on opposite sides and the middle part den Longitudinal section of the pull lip.
Von Vorteil ist es, wenn die Länge des Längsabschnitts mindestens das Sechsfache der Länge des Abziehlippenfortsatzes beträgt. Als Länge des Längsabschnitts wird hierbei der Abstand zwischen dem dem Saugkanal abgewandten vorderen Ende des Längsabschnitts und der Gehäusestirnseite des Saugdüsengehäuses bezeichnet, und als Länge des Abziehlippenfortsatzes wird der senkrechte Abstand der am freien Ende des Abziehlippenfortsatzes angeordneten Abziehlippenkante von einer Mittelebene des Längsabschnitts bezeichnet.It is advantageous if the length of the longitudinal section is at least six times the length of the 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 face of the suction nozzle housing, and the length of the pull-off lip extension is the vertical distance of the pull-lip edge arranged at the free end of the pull-off lip extension from a central plane of the longitudinal section.
Die Länge des Abziehlippenfortsatzes kann beispielsweise 1 bis 6 mm, insbesondere 2 bis 4 mm betragen und die Länge des Längsabschnitts kann beispielsweise 10 bis 30 mm, insbesondere 16 bis 24 mm betragen.The length of the pull-off 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.
Bei einer vorteilhaften Ausführungsform der Erfindung ist der Längsabschnitt der Abziehlippe in der unverformten Grundstellung der Abziehlippe geradlinig ausgestaltet. Als unverformte Grundstellung wird hierbei eine Stellung der Abziehlippe bezeichnet, in der sie die zu reinigende Hartfläche nicht kontaktiert und daher keiner durch Anpressen an die Hartfläche hervorgerufenen Verformung unterliegt. Der Längsabschnitt ist günstigerweise in dieser Grundstellung der Abziehlippe geradlinig ausgebildet.In an advantageous embodiment of the invention, the longitudinal section of the pull-off lip is designed to be straight in the undeformed basic position of the pull-off lip. An undeformed basic position is a position of the pull-off lip in which it does not contact the hard surface to be cleaned and is therefore not subject to any deformation caused by pressing against the hard surface. The longitudinal section is advantageously formed in a straight line in this basic position of the pull-off lip.
Vorzugsweise erstreckt sich der Längsabschnitt in der unverformten Grundstellung der Abziehlippe parallel oder kollinear zu einer Mittelachse des Saugdüsengehäuses.In the undeformed basic position of the pull-off lip, the longitudinal section preferably extends parallel or collinear to a central axis of the suction nozzle housing.
Von Vorteil ist es, wenn die Abziehlippe einen Abziehlippenfortsatz aufweist, der in der unverformten Grundstellung der Abziehlippe am vorderen Endbereich der Stützlippe anliegt. Bei einer derartigen Ausgestaltung ist der Abstand zwischen dem vorderen Endbereich der Stützlippe und einem Abziehlippenfortsatz so gering wie möglich. Beim Anlegen an die zu reinigende Hartfläche verformen sich die Abziehlippe und die Stützlippe, wobei sich der Abstand zwischen dem vorderen Endbereich der Stützlippe und dem in der Grundstellung am vorderen Endbereich der Stützlippe anliegenden Abziehlippenfortsatz vergrößert und Flüssigkeit in den Saugraum zwischen der Abziehlippe und der Stützlippe eindringen kann. Je geringer der Abstand zwischen dem vorderen Ende der Stützlippe und dem Abziehlippenfortsatz ist, desto weniger Luft kann zwischen der Stützlippe und dem Abziehlippenfortsatz in den Saugraum einströmen und desto stärker ist die im Saugraum herrschende Saugströmung, und dies wiederum stellt sicher, dass praktisch keine Flüssigkeitsreste an der Hartfläche verbleiben. Um während des Einsatzes der Saugdüse den Abstand zwischen dem vorderen Endbereich der Stützlippe und dem Abziehlippenfortsatz gering zu halten, ist es daher von Vorteil, wenn der an die Hartfläche anpressbare Abziehlippenfortsatz in der unverformten Grundstellung der Abziehlippe unmittelbar am vorderen Endbereich der Stützlippe anliegt.It is advantageous if the pull-off lip has a pull-off lip extension which, in the undeformed basic position of the pull-off lip, rests against the front end region of the support lip. With such a configuration, the distance between the front end region of the support lip and a pull-off lip extension is as small as possible. When applied to the hard surface to be cleaned, the pull-off lip and the support lip deform, the distance between the front end area of the support lip and the pull-lip extension in the basic position at the front end area of the support lip increases and liquid penetrate into the suction space between the pull-off lip and the support lip can. The smaller the distance between the front end of the support lip and the pull-off lip extension, the less air can flow into the suction space between the support lip and the pull-off lip extension and the stronger the suction flow prevailing in the suction space, and this in turn ensures that practically no liquid residues are present the hard surface remain. In order to keep the distance between the front end region of the support lip and the pull-off lip extension small during use of the suction nozzle, it is therefore advantageous if the pull-off lip extension which can be pressed onto the hard surface is in direct contact with the front end region of the support lip in the undeformed basic position of the pull-off lip.
Günstig ist es, wenn die Stützlippe an ihrem vorderen Endbereich eine Stirnfläche aufweist, an der ein Abziehlippenfortsatz in der unverformten Grundstellung der Abziehlippe mit einer Kontaktfläche anliegt. In der unverformten Grundstellung der Abziehlippe berührt somit ein Abziehlippenfortsatz mit seinem vorderen Endbereich die Stützlippe, indem eine Kontaktfläche des Abziehlippenfortsatzes an einer Stirnfläche der Stützlippe anliegt.It is expedient for the support lip to have an end face at its front end region, against which a pull-off lip extension rests with a contact surface in the undeformed basic position of the pull-off lip. In the undeformed basic position of the pull-off lip, a pull-off lip extension thus touches the support lip with its front end region, in that a contact surface of the pull-off lip extension rests against an end face of the support lip.
Die Stirnfläche der Stützlippe bildet bei einer vorteilhaften Ausführungsform der Erfindung eine Keilfläche aus, die sich bis zur Stützlippenkante erstreckt.In an advantageous embodiment of the invention, the end face of the support lip forms a wedge surface which extends to the edge of the support lip.
Die Kontaktfläche des Abziehlippenfortsatzes bildet in der unverformten Grundstellung der Abziehlippe günstigerweise eine in einem stumpfen Winkel zu einer Unterseite des Längsabschnitts geneigte Schrägfläche aus. Die Schrägfläche kann sich von der Abziehlippenkante bis zu der der Stützlippe zugewandten Unterseite des Längsabschnitts der Abziehlippe erstrecken. Die Unterseite kann in der unverformten Grundstellung der Abziehlippe eben ausgestaltet sein.In the undeformed basic position of the pull-off lip, the contact surface of the pull-off lip extension advantageously forms an inclined surface inclined at an obtuse angle to an underside of the longitudinal section. The inclined surface can extend from the edge of the pull-off lip to the underside of the longitudinal section of the pull-off lip facing the support lip. The underside can be flat in the undeformed basic position of the pull lip.
Bei einer vorteilhaften Ausführungsform der Erfindung ist die mindestens eine Durchbrechung der Stützlippe als an der Stützlippenkante angeordnete Ausnehmung ausgestaltet. Wie bereits erwähnt, staut sich Flüssigkeit an der Stützlippe an, wenn die Saugdüse in Abziehrichtung an der zu reinigenden Hartfläche entlang bewegt wird. Die sich an der Stützlippe aufstauende Flüssigkeit kann über die mindestens eine stirnseitige Ausnehmung der Stützlippe in den Saugraum zwischen der Stützlippe und der Abziehlippe gelangen. Von Vorteil ist es, wenn an der Stützlippenkante eine Vielzahl von Ausnehmungen angeordnet sind.In an advantageous embodiment of the invention, the at least one opening in the support lip is designed as a recess arranged on the edge of the support lip. As already mentioned, liquid builds up on the support lip when the suction nozzle is moved along the hard surface to be cleaned in the pulling direction. The liquid that builds up on the support lip can reach the suction space between the support lip and the pull-off lip via the at least one end-side recess of the support lip. It is advantageous if a plurality of recesses are arranged on the lip edge.
Bei einer bevorzugten Ausgestaltung der Erfindung weist die Stützlippe auf ihrer der Abziehlippe abgewandten Stützlippenunterseite eine Vielzahl von Vertiefungen auf, die jeweils in eine an der Stützlippenkante angeordnete Ausnehmung münden. Flüssigkeit, die sich beim Entlangführen der Stützlippe an der zu reinigenden Hartfläche an der Stützlippe aufstaut, kann über die Vertiefungen, die an der Stützlippenunterseite angeordnet sind, zu den an der Stirnseite der Stützlippe angeordneten Ausnehmungen gelangen und über diese in den Saugraum strömen.In a preferred embodiment of the invention, the support lip has a plurality of depressions on its underside of the support lip facing away from the pull-off lip, each of which opens into a recess arranged on the edge of the support lip. Liquid that builds up on the hard lip to be cleaned when the supporting lip is guided along can pass over the Recesses, which are arranged on the underside of the support lip, reach the recesses arranged on the end face of the support lip and flow through them into the suction space.
Günstig ist es, wenn die Stützlippe auf ihrer der Abziehlippe zugewandten Stützlippenoberseite eine Vielzahl von Erhebungen aufweist. Die Erhebungen können Abstandshalter ausbilden, so dass sichergestellt ist, dass die Abziehlippe auch im verformten Zustand nicht flächig auf der Stützlippe aufliegt, wenn die Saugdüse an der zu reinigenden Hartfläche entlang bewegt wird. Vielmehr wird durch die Erhebungen der Stützlippe gewährleistet, dass über den Saugraum Flüssigkeit in den Saugkanal gelangen kann.It is expedient for the support lip to have a plurality of elevations on its upper side of the support lip facing the pull-off lip. The elevations can form spacers, so that it is ensured that the pull-off lip does not lie flat on the support lip even in the deformed state when the suction nozzle is moved along the hard surface to be cleaned. Rather, the elevations of the support lip ensure that liquid can get into the suction channel via the suction space.
Die Erhebungen, die an der Stützlippenoberseite angeordnet sind, erstrecken sich bei einer vorteilhaften Ausführungsform der Erfindung bis zu einer Stirnfläche, die die Stützlippe an ihrem vorderen Endbereich aufweist. Wie bereits erwähnt, kann vorgesehen sein, dass sich ein Abziehlippenfortsatz mit einer Kontaktfläche an der Stirnfläche der Stützlippe abstützt, wenn die Abziehlippe ihre unverformte Grundstellung einnimmt.In an advantageous embodiment of the invention, the elevations which are arranged on the upper side of the supporting lips extend to an end face which has the supporting lip at its front end region. As already mentioned, it can be provided that a pull-off lip extension is supported with a contact surface on the end face of the support lip when the pull-off lip assumes its undeformed basic position.
Die an der Stützlippenoberseite angeordneten Erhebungen bilden bei einer vorteilhaften Ausführungsform der Erfindung rippenartige Strömungsleitelemente aus. Die Strömungsleitelemente können in ihrer Formgebung an die Strömungsrichtung der Saugströmung angepasst sein, die sich im Saugraum ausbildet, wenn der Saugkanal an eine Unterdruckquelle angeschlossen ist. Strömungsverluste können dadurch gering gehalten werden.In an advantageous embodiment of the invention, the elevations arranged on the upper side of the supporting lips form rib-like flow guide elements. The shape of the flow guide elements can be adapted to the direction of flow of the suction flow, which is formed in the suction space when the suction channel is connected to a vacuum source. Flow losses can be kept low.
Die Erhebungen sind bei einer vorteilhaften Ausgestaltung der Erfindung fächerförmig angeordnet.In an advantageous embodiment of the invention, the elevations are arranged in a fan shape.
Von besonderem Vorteil ist es, wenn sich die Abstände zwischen einander unmittelbar benachbarten Erhebungen mit zunehmendem Abstand von einer Mittelachse des Saugdüsengehäuses zunehmend vergrößern. Es kann beispielsweise vorgesehen sein, dass in einem bezogen auf die Mittelachse zentralen Bereich der Stützlippe zwischen zwei einander unmittelbar benachbarten Erhebungen jeweils nur eine einzige stirnseitige Ausnehmung angeordnet ist, wohingegen mit zunehmendem Abstand zur Mittelachse der Abstand zwischen einander unmittelbar benachbarten Erhebungen zunimmt, so dass zwischen zwei einander unmittelbar benachbarten Erhebungen mehrere stirnseitige Ausnehmungen angeordnet sind.It is particularly advantageous if the distances between elevations immediately adjacent to one another increase with increasing distance from a central axis of the suction nozzle housing. It can be provided, for example, that in a central position with respect to the central axis In the region of the support lip between two immediately adjacent elevations, only a single end recess is arranged, whereas the distance between the immediately adjacent elevations increases with increasing distance from the central axis, so that a plurality of end recesses are arranged between two immediately adjacent elevations.
Um den Saugraum zwischen der Abziehlippe und der Stützlippe seitlich zu verschließen, das heißt im Bereich der Seitenkanten der Abziehlippe und der Stützlippe, bilden die Abziehlippe und/oder die Stützlippe bei einer vorteilhaften Ausführungsform der Erfindung Seitenwände aus. Mittels der Seitenwände kann der Saugraum seitlich zumindest teilweise verschlossen werden. Die Seitenwände können beispielsweise nach Art von Rippen ausgestaltet sein, die im Bereich der Seitenkanten an die Abziehlippe und/oder an die Stützlippe angeformt sind. Die Bereitstellung der Seitenwände reduziert das seitliche Einströmen von Falschluft in den Saugraum zwischen der Abziehlippe und der Stützlippe. Durch das seitliche Verschließen des Saugraums wird somit die sich zwischen der an der Hartfläche anliegenden Abziehlippenkante und der an der Hartfläche anliegenden Stützlippenkante ausbildende Saugströmung optimiert und auf diese Weise das Reinigungsergebnis verbessert.In order to close the suction space between the pull-off lip and the support lip laterally, that is to say in the region of the side edges of the pull-off lip and the support lip, the pull-off 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 be designed, for example, in the manner of ribs which are formed on the pull-off lip and / or on the support lip in the region of the side edges. The provision of the side walls reduces the lateral inflow of false air into the suction space between the pull-off lip and the support lip. The lateral closing of the suction space thus optimizes the suction flow which forms between the pull-lip edge resting on the hard surface and the support lip edge resting on the hard surface and in this way improves the cleaning result.
Eine weitere Verbesserung des Reinigungsergebnisses wird bei einer vorteilhaften Ausgestaltung der Erfindung dadurch erzielt, dass die Abziehlippe eine erste und eine zweite Seitenkante aufweist, die die Breite der Abziehlippe begrenzen, und dass die Abziehlippe im Abstand zu den Seitenkanten bereichsweise verstärkt ist. Durch die bereichsweise Verstärkung der Abziehlippe erhält diese eine ungleichförmige Biegesteifigkeit, und zwar ist die Biegesteifigkeit der Abziehlippe in einzelnen Bereichen, die einen Abstand zu den Seitenkanten einnehmen, höher als im Bereich der Seitenkanten. Die bereichsweise erhöhte Biegesteifigkeit verbessert das Reinigungsergebnis in Fällen, in denen ein Randbereich einer Hartfläche, insbesondere ein Randbereich einer Fensterscheibe, mittels der Saugdüse gereinigt wird, wobei im Randbereich Unebenheiten auftreten. Derartige Unebenheiten werden beispielsweise von Dichtungsstreifen gebildet, die eine Fensterscheibe begrenzen. Wird der Randbereich der Fensterscheibe mittels der Saugdüse gereinigt, so kann der Fall auftreten, dass die Abziehlippe mit ihrem einer Seitenkante benachbarten Randbereich auf einem Dichtungsstreifen aufsitzt und sich dabei von der Fensterscheibe abhebt. Durch die Verstärkung der Abziehlippe in Bereichen, die einen Abstand zu einer Seitenkante einnehmen, erhält die Abziehlippe bereichsweise eine höhere Biegesteifigkeit. Dadurch kann das Risiko verringert werden, dass die Abziehlippe unbeabsichtigt von der Fensterscheibe abhebt, wenn sie mit ihrem äußeren Randbereich auf einem Dichtungsstreifen aufsitzt.A further improvement of the cleaning result is achieved in an advantageous embodiment of the invention in that the pull-off lip has a first and a second side edge, which limit the width of the pull-off lip, and in that the pull-off lip is regionally reinforced at a distance from the side edges. Due to the area-by-area reinforcement of the pull-off lip, it obtains a non-uniform bending stiffness, namely that the bending stiffness of the pull-off 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 bending stiffness in some areas improves the cleaning result in cases in which an edge region of a hard surface, in particular an edge region of a window pane, is cleaned by means of the suction nozzle, with unevenness occurring in the edge region. Such bumps are caused, for example, by sealing strips formed that limit a window pane. If the edge area of the window pane is cleaned by means of the suction nozzle, the case can occur that the pull-off lip sits with its edge area adjacent to a side edge on a sealing strip and thereby stands out from the window pane. By strengthening the pull-off lip in areas that are at a distance from a side edge, the pull-off lip gains greater bending rigidity in some areas. This can reduce the risk of the pull-off lip inadvertently lifting off the window pane when it rests on a sealing strip with its outer edge region.
Es kann beispielsweise vorgesehen sein, dass die Abziehlippe auf ihrer der Stützlippe abgewandten Abziehlippenoberseite im Abstand zu den Seitenkanten jeweils mindestens eine Verstärkungsrippe aufweist. Die Verstärkungsrippe erstreckt sich günstigerweise über die gesamte Länge des Längsabschnitts der Abziehlippe.For example, it can be provided that the pull-off lip has at least one reinforcing rib on its upper side of the pull-off lip 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 pull-off lip.
Bevorzugt ist im Abstand zu jeder Seitenkante jeweils ein Paar von Verstärkungsrippen angeordnet. Bei einer derartigen Ausgestaltung der Erfindung weist die Abziehlippe auf der Abziehlippenoberseite mindestens zwei Paare von Verstärkungsrippen auf, wobei ein erstes Paar von Verstärkungsrippen in einem geringen Abstand zu einer ersten Seitenkante angeordnet ist, und wobei ein zweites Paar von Verstärkungsrippen in einem geringen Abstand zur zweiten Seitenkante der Abziehlippe angeordnet ist. Günstigerweise weisen die beiden Paare von Verstärkungsrippen denselben Abstand zu der jeweils nächstgelegenen Seitenkante der Abziehlippe auf.A pair of reinforcing ribs is preferably arranged at a distance from each side edge. In such an embodiment of the invention, the pull-off lip has at least two pairs of reinforcing ribs on the top of the pull-off lip, a first pair of reinforcing ribs being arranged at a short distance from a first side edge, and a second pair of reinforcing ribs at a short distance from the second side edge the pull-off lip is arranged. The two pairs of reinforcing ribs advantageously have the same distance from the nearest side edge of the pull-off lip.
Der Abstand, den die Paare von Verstärkungsrippen zu der jeweils nächstgelegenen Seitenkante aufweisen, kann beispielsweise 4 mm bis 8 mm betragen.The distance that the pairs of reinforcing ribs have from the respectively nearest side edge can be, for example, 4 mm to 8 mm.
Der Abstand zwischen den beiden Verstärkungsrippen eines Paars von Verstärkungsrippen beträgt bevorzugt etwa 0,5 mm bis etwa 3 mm.The distance between the two reinforcing ribs of a pair of reinforcing ribs is preferably approximately 0.5 mm to approximately 3 mm.
Von besonderem Vorteil ist es, wenn die mindestens eine Verstärkungsrippe eine Stützfläche aufweist, die beim Verformen der Abziehlippe aus der unverformten Grundstellung in die der Stützlippe abgewandte Richtung an der Gehäusestirnseite anliegt. In der unverformten Grundstellung der Abziehlippe kann die Stützfläche der Verstärkungsrippen einen Abstand zur Gehäusestirnseite einnehmen, wird jedoch die Abziehlippe beim Reinigen einer Hartfläche an die Hartfläche gedrückt, so wird die Abziehlippe verformt und die Stützfläche der Verstärkungsrippen kommt an der Gehäusestirnseite zur Anlage. Dadurch kann sich die Abziehlippe über die Verstärkungsrippen an der Gehäusestirnseite abstützen, und dies wiederum hat zur Folge, dass die Abziehlippe im Bereich der Verstärkungsrippen eine höhere Biegesteifigkeit aufweist als in Bereichen, die keine Verstärkungsrippen aufweisen.It is particularly advantageous if the at least one reinforcing rib has a support surface which, when the pull-off lip is deformed from the undeformed basic position, bears against the front face of the housing in the direction facing away from the support lip. In the undeformed basic position of the pull-off lip, the support surface of the reinforcing ribs can be at a distance from the front face of the housing, but if the pull-off lip is pressed against the hard surface when cleaning a hard surface, the pull-off lip is deformed and the support surface of the reinforcing ribs comes into contact with the front face of the housing. As a result, the pull-off lip can be supported on the reinforcing ribs on the front face of the housing, and this in turn has the consequence that the pull-off lip has a greater bending stiffness in the region of the reinforcing ribs than in regions which have no reinforcing ribs.
Die Länge des aus dem Saugdüsengehäuse herausragenden Bereichs der Abziehlippe beträgt günstigerweise mindestens 18 mm, insbesondere 20 bis 30 mm. Als Länge wird hierbei der Abstand zwischen der Gehäusestirnseite und dem vorderen Ende der Abziehlippe verstanden.The length of the area of the pull-off lip protruding from the suction nozzle housing is advantageously at least 18 mm, in particular 20 to 30 mm. The length here is understood to mean the distance between the front face of the housing and the front end of the pull-off lip.
Die Länge des aus dem Saugdüsengehäuse herausragenden Bereichs der Stützlippe beträgt bevorzugt mindestens 16 mm, insbesondere etwa 20 bis 30 mm.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.
Es kann vorgesehen sein, dass die beiden Seitenkanten der Abziehlippe parallel zueinander ausgerichtet sind, so dass der Abstand, den die beiden Seitenkanten zueinander aufweisen, das heißt die Breite der Abziehlippe, über die gesamte Länge der Abziehlippe konstant ist. In der Draufsicht kann der aus dem Saugdüsengehäuse herausragende Bereich der Abziehlippe rechteckförmig ausgestaltet sein.It can be provided that the two side edges of the pull lip are aligned parallel to one another, so that the distance that the two side edges have from one another, that is to say the width of the pull lip, is constant over the entire length of the pull lip. In the top view, the area of the pull-off lip protruding from the suction nozzle housing can be designed in a rectangular shape.
Es kann allerdings auch vorgesehen sein, dass die Seitenkanten der Abziehlippe mit zunehmendem Abstand zur Gehäusestirnseite des Saugdüsengehäuses einen zunehmenden Abstand zueinander aufweisen, das heißt dass die Breite der Abziehlippe mit zunehmendem Abstand zur Gehäusestirnseite zunimmt. Der aus dem Saugdüsengehäuse herausragende Bereich der Abziehlippe kann in der Draufsicht beispielsweise trapezförmig ausgestaltet sein.However, it can also be provided that the side edges of the pull-off lip have an increasing distance from one another with increasing distance from the housing front side of the suction nozzle housing, that is to say that the width of the pull-off lip increases with increasing distance from the housing front side increases. The area of the pull-off lip protruding from the suction nozzle housing can be designed trapezoidal in plan view, for example.
Alternativ kann beispielsweise vorgesehen sein, dass die Seitenkanten der Abziehlippe bogenförmig nach außen gekrümmt sind.Alternatively, it can be provided, for example, that the side edges of the pull-off lip are curved outward in an arc shape.
Wie bereits erwähnt, betrifft die Erfindung nicht nur eine Saugdüse sondern auch ein tragbares Hartflächenabsauggerät mit einer derartigen Saugdüse. Das tragbare Hartflächenabsauggerät kann insbesondere in Form eines Handgeräts ausgebildet sein, das vom Benutzer mit einer Hand getragen und nach Art eines manuellen Fensterabziehers in einer Abziehrichtung an einer Fensterscheibe entlanggeführt werden kann. Das Hartflächenabsauggerät weist ein Saugaggregat auf sowie einen Schmutzflüssigkeitstank und eine Abscheideeinrichtung, wobei mittels der Abscheideeinrichtung Flüssigkeit von einem aufgesaugten Flüssigkeits-Luftgemisch abgeschieden werden kann. Außerdem weist das Hartflächenabsauggerät eine Saugdüse der voranstehend erläuterten Art auf.As already mentioned, 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 can be guided along a window pane in a pull-off direction in the manner of a manual window puller. The hard surface suction device has a suction unit as well as a dirty liquid tank and a separating device, wherein liquid can be separated from an absorbed liquid-air mixture by means of the separating device. In addition, the hard surface suction device has a suction nozzle of the type explained above.
Mit Hilfe des Saugaggregats kann im Saugraum zwischen der Abziehlippe und der Stützlippe und in dem sich an den Saugraum anschließenden Saugkanal eine Saugströmung erzeugt werden, unter deren Wirkung ein Gemisch aus Flüssigkeit und Luft in den Saugraum eingesaugt werden kann. Die eingesaugte Flüssigkeit kann mit Hilfe der Abscheideeinrichtung aus dem Gemisch aus Flüssigkeit und Luft abgeschieden und in den Schmutzflüssigkeitstank überführt werden. Die eingesaugte Luft kann über Luftauslassöffnungen des Hartflächenabsauggeräts an die Umgebung abgegeben werden.With the help of the suction unit, a suction flow can be generated in the suction space between the pull-off lip and the support lip and in the suction channel adjoining the suction space, under the effect of which a mixture of liquid and air can be sucked into the suction space. The sucked-in liquid can be separated from the mixture of liquid and air with the aid of the separating device and transferred to the dirty liquid tank. The sucked-in air can be released into the environment via air outlet openings of the hard surface suction device.
Die nachfolgende Beschreibung vorteilhafter Ausführungsformen der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:
- Figur 1:
- eine perspektivische Darstellung eines Hartflächenabsauggeräts;
- Figur 2:
- eine Draufsicht auf eine Saugdüse des Hartflächenabsauggeräts aus
Figur 1 ; - Figur 3:
- eine Schnittansicht der Saugdüse längs der Linie 3-3 in
Figur 2 ; - Figur 4:
- eine perspektivische, teilweise aufgetrennte Darstellung der Saugdüse aus
Figur 2 ; - Figur 5:
- eine Draufsicht auf die Saugdüse aus
Figur 2 , wobei eine Abziehlippe entfernt wurde; - Figur 6:
- eine Unteransicht auf die Saugdüse aus
Figur 2 ; - Figur 7:
- eine Schnittansicht der Saugdüse aus
Figur 2 entlang einer Mittelachse beim Entlangführen an einer Hartfläche; - Figur 8:
- eine perspektivische Darstellung der Saugdüse aus
Figur 2 beim Entlangführen an einem Randbereich einer Fensterscheibe; - Figur 9:
- eine vergrößerte Darstellung von Detail A aus
Figur 8 ; - Figur 10:
- eine Draufsicht einer alternativen Ausgestaltung einer Saugdüse des Hartflächenabsauggeräts aus
Figur 1 ; - Figur 11:
- eine Draufsicht einer weiteren alternativen Ausgestaltung einer Saugdüse des Hartflächenabsauggeräts aus
Figur 1 ; Figuren 12 bis 20:- Längsschnittansichten alternativer Ausgestaltungen von Abziehlippen der Saugdüsen aus den
Figuren 1 bis 11 .
- Figure 1:
- a perspective view of a hard surface suction device;
- Figure 2:
- a plan view of a suction nozzle of the hard surface suction device
Figure 1 ; - Figure 3:
- a sectional view of the suction nozzle along the line 3-3 in
Figure 2 ; - Figure 4:
- a perspective, partially broken representation of the suction nozzle
Figure 2 ; - Figure 5:
- a top view of the suction nozzle
Figure 2 with a peel lip removed; - Figure 6:
- a bottom view of the suction nozzle
Figure 2 ; - Figure 7:
- a sectional view of the suction nozzle
Figure 2 along a central axis when passing along a hard surface; - Figure 8:
- a perspective view of the suction nozzle
Figure 2 when leading along an edge region of a window pane; - Figure 9:
- an enlarged view of detail A.
Figure 8 ; - Figure 10:
- a plan view of an alternative embodiment of a suction nozzle of the hard surface suction device
Figure 1 ; - Figure 11:
- a plan view of a further alternative embodiment of a suction nozzle of the hard surface suction device
Figure 1 ; - Figures 12 to 20:
- Longitudinal sectional views of alternative configurations of pulling lips of the suction nozzles from the
Figures 1 to 11 .
In den
Mit Hilfe des tragbaren Hartflächenabsauggeräts kann Flüssigkeit von einer Hartfläche, insbesondere von einer Fensterscheibe, abgezogen und aufgesaugt werden. Das Hartflächenabsauggerät kann vom Benutzer nach Art eines manuellen Fensterabziehers an der Hartfläche entlang bewegt werden. Das tragbare Hartflächenabsauggerät bildet somit ein Fensterputzgerät aus.With the help of the portable hard surface suction device, liquid can be drawn off and sucked up from a hard surface, in particular from a window pane. The hard surface suction device can be moved along the hard surface by the user in the manner of a manual window puller. The portable hard surface suction device thus forms a window cleaning device.
Das Hartflächenabsauggerät 10 umfasst ein Grundgehäuse 14, das einen Handgriff 16 ausbildet und ein Saugaggregat 18 umgibt, welches von einem Elektromotor 20 angetrieben wird. Der Elektromotor 20 wird von einer im Grundgehäuse 14 angeordneten wiederaufladbaren Batterie 22 mit elektrischer Energie versorgt.The hard
Das Saugaggregat 18 steht über eine im Grundgehäuse 14 verlaufende Saugleitung 24 mit einer im Grundgehäuse 14 angeordneten Abscheideeinrichtung 26 in Strömungsverbindung, mit deren Hilfe Flüssigkeit aus einem eingesaugten Flüssigkeits-Luftgemisch abgeschieden werden kann. Die abgeschiedene Flüssigkeit kann in einen Schmutzflüssigkeitsbehälter 28 überführt werden, der auf der dem Handgriff 16 abgewandten Seite des Grundgehäuses 14 angeordnet und zum Entleeren vom Grundgehäuse 14 getrennt werden kann.The
Oberseitig schließt sich an das Grundgehäuse 14 die Saugdüse 12 an. Die Saugdüse 12 weist ein Saugdüsengehäuse 30 auf und ist mit dem Grundgehäuse 14 lösbar verbindbar. Das Saugdüsengehäuse 30 umfasst eine obere Gehäusehalbschale 32 und eine untere Gehäusehalbschale 34, die mittels Verbindungsschrauben 36 miteinander verschraubt sind. Wie insbesondere aus
An der Gehäusestirnseite 40 sind eine elastisch verformbare Abziehlippe 44 und eine elastisch verformbare Stützlippe 46 gehalten, die aus dem Saugdüsengehäuse 30 in die dem Saugkanal 38 abgewandte Richtung nach vorne herausragen.An elastically deformable pull-off
Zur Herstellung der Abziehlippe 44 kann beispielsweise ein Silikonmaterial zum Einsatz kommen.For example, a silicone material can be used to produce the pull-off
Die Stützlippe 46 ist vorteilhafterweise an die untere Gehäusehalbschale 34 angeformt. Hierbei kann die untere Gehäusehalbschale 34 zusammen mit der Stützlippe 46 ein gemeinsames Spritzgussteil mit zwei Komponenten ausbilden. Die untere Gehäusehalbschale 34 kann eine Hartkomponente der Spritzgussteils ausbilden und die Stützlippe 46 kann eine Elastomerkomponente des Spritzgussteils ausbilden.The
Die Abziehlippe 44 weist einen dem Saugkanal 38 zugewandten Halteabschnitt 48 auf, der zwischen der oberen Gehäusehalbschale 32 und einem Zwischenteil 37 eingespannt ist. Das Zwischenteil 37 ist zwischen der oberen Gehäusehalbschale 32 und der unteren Gehäusehalbschale 34 eingespannt. In die dem Saugkanal 38 abgewandte Richtung schließt sich an den Halteabschnitt 48 ein aus der Gehäusestirnseite 40 herausragender Längsabschnitt 50 der Abziehlippe 44 an. In der in den
Die Stützlippe 46 ragt ebenfalls aus der Gehäusestirnseite 40 heraus. An ihrem freien Ende bildet die Stützlippe 46 eine Stützlippenkante 56 aus. In der unverformten Grundstellung liegt die Stützlippenkante 56 an der Abziehlippenkante 54 an.The
Die Stützlippe 46 weist eine der Abziehlippe 44 zugewandte Stützlippenoberseite 58 und eine der Abziehlippe 54 abgewandte Stützlippenunterseite 60 auf. Von der Stützlippe 46 erstreckt sich in Richtung auf die Stützlippenoberseite 58 eine keilförmige Stirnfläche 62, an der die Abziehlippe 44 in der unverformten Grundstellung mittels einer komplementär zur Stirnfläche 62 ausgestalteten Kontaktfläche 64 flächig anliegt. Die Kontaktfläche 64 bildet eine in einem stumpfen Winkel zu einer Unterseite 94 des Längsabschnitts 50 geneigte Schrägfläche 68 aus. In der dargestellten Ausführungsform beträgt der Winkel zwischen der Schrägfläche 68 und der Unterseite 94 des Längsabschnitts 50 etwa 135°.The
Wie aus den
An der Stützlippenkante 56 weist die Stützlippe 46 eine Vielzahl von Durchbrechungen in Form von Ausnehmungen 76 auf, die halbkreisförmig ausgestaltet sind.On the
Auf der Stützlippenunterseite 60 weist die Stützlippe 46 eine Vielzahl von Vertiefungen 78 auf, die jeweils in eine Ausnehmung 76 einmünden.On the underside of the
Die Abziehlippe 44 definiert zusammen mit der Stützlippe 46 einen Saugraum 80, der an einer ersten Seitenkante 82 der Abziehlippe 44 von einer ersten Seitenwand 84 und an einer zweiten Seitenkante 86 er Abziehlippe 44 von einer zweiten Seitenwand 88 begrenzt wird. Die beiden Seitenwände 84, 88 sind einstückig mit der Abziehlippe 44 verbunden. Der Abstand zwischen der ersten Seitenkante 82 und der zweiten Seitenkante 86 definiert die Breite der Abziehlippe 44.The pull-off
Die Abziehlippe 44 weist eine der Stützlippe 46 abgewandte Abziehlippenoberseite 92 auf und der Längsabschnitt 50 weist die bereits erwähnte, der Stützlippe 46 zugewandte Unterseite 94 auf. Die Unterseite 94 ist in der unverformten Grundstellung der Abziehlippe 44 eben ausgestaltet und erstreckt sich parallel zur Mittelachse 72 des Saugdüsengehäuses 30.The pull-off
Die Abziehlippe 44 ist bereichsweise verstärkt. Hierzu weist sie auf der Abziehlippenoberseite 92 in geringem Abstand zur ersten Seitenkante 82 ein erstes Paar von Verstärkungsrippen 96, 98 auf, und in geringem Abstand zur zweiten Seitenkante 86 weist die Abziehlippe 44 auf der Abziehlippenoberseite 92 ein zweites Paar von Verstärkungsrippen 100, 102 auf. Die Verstärkungsrippen 96, 98, 100 und 102 sind jeweils identisch ausgebildet, parallel zur Mittelachse 72 ausgerichtet und erstrecken sich mit zunehmender Höhe vom freien Ende 90 der Abziehlippe 44 bis zur Gehäusestirnseite 40, wobei sie jeweils eine der Gehäusestirnseite 40 zugewandte Stützfläche 104 ausbilden, die senkrecht zur Längsachse 66 des Längsabschnitts 50 ausgerichtet ist.The pull-off
Der Abstand A1, den das erste Paar von Verstärkungsrippen 96, 98 zur ersten Seitenkante 82 einnimmt, ist identisch mit dem Abstand A2, den das zweite Paar von Verstärkungsrippen 100, 102 zur zweiten Seitenkante 86 einnimmt. Der Abstand beträgt jeweils etwa 4 bis 8 mm.The distance A1 that the first pair of reinforcing
Der Abstand, den die beiden Verstärkungsrippen 96, 98 des ersten Paars von Verstärkungsrippen zueinander einnehmen, beträgt im dargestellten Ausführungsbeispiel etwa 1 bis 3 mm und ist identisch mit dem Abstand, den die beiden Verstärkungsrippen 100, 102 des zweiten Paars von Verstärkungsrippen zueinander aufweisen.The distance between the two reinforcing
Die Länge L1 des aus dem Saugdüsengehäuse 30 herausragenden Bereichs der Abziehlippe 44 beträgt im dargestellten Ausführungsbeispiel mindestens 18 mm, vorzugsweise 20 bis 30 mm, und die Länge L2 des aus dem Saugdüsengehäuse 30 herausragenden Bereichs der Stützlippe 46 beträgt mindestens 16 mm, vorzugsweise 20 bis 30 mm.The length L1 of the area of the pull-off
Wie bereits erwähnt, kann das Hartflächenabsauggerät 10 zur Reinigung einer Hartfläche an dieser entlang bewegt werden. In
Wird die Saugdüse 12 entlang der Hartfläche 106 in der Abziehrichtung 108 bewegt, so staut sich Flüssigkeit, die an der Hartfläche 106 anhaftet, vor der Stützlippe 46 an und gelangt über die an der Stützlippenunterseite 60 angeordneten Vertiefungen 78 und die an der Stützlippenkante 56 angeordneten Ausnehmungen 76 in den Saugraum 80 zwischen der Stützlippe 46 und der Abziehlippe 44. Zum Reinigen einer Hartfläche 106 ist die Saugdüse 12 selbstverständlich mit dem Grundgehäuse 14 des Hartflächenabsauggeräts 10 verbunden und vom Saugaggregat 18 wird eine Saugströmung erzeugt, unter deren Wirkung die im Saugraum 80 befindliche Flüssigkeit über den Saugkanal 38 zur Abscheideeinrichtung 26 gelangt. Von der Abscheideeinrichtung 26 strömt die Flüssigkeit in den Schmutzflüssigkeitsbehälter 28.If the
Aufgrund des vom Längsabschnitt 50 schräg abstehenden Abziehlippenfortsatzes 52, der der Abziehlippe 44 eine gekröpfte Ausgestaltung verleiht, kontaktiert die Abziehlippe 44 die zu reinigende Hartfläche 106 auch dann linienförmig, wenn die Abziehlippe 44 aus ihrer Grundstellung verformt wird, wie dies in
Die
Auch bei der Saugdüse 120 kommt zusätzlich zur Abziehlippe 124 eine in
In
In den
In den
In
In
In
Die in den
Insbesondere die in den
Verstärkungsrippen können auch bei den in den
Claims (32)
- Suction nozzle for a portable hard surface suction appliance (10) for squeegeeing and suctioning liquid from a hard surface (106), in particular from a window pane (110), comprising a suction nozzle housing (30) in which a suction channel (38) that is connectable to a source of vacuum is arranged and on the housing face side (40) of which an elastically deformable squeegee lip (44) and an elastically deformable support lip (46) are arranged, which protrude out of the suction nozzle housing (30) and between which a suction space (80) is defined, which is adjoined by the suction channel (38), wherein the squeegee lip (44) comprises at its front end region protruding out of the suction nozzle housing (30) a squeegee lip edge (54) which is able to abut against the hard surface (106) to be cleaned, and wherein the support lip (46) comprises at its front end region protruding out of the suction nozzle housing (30) a support lip edge (56) which is able to abut against the hard surface (106) to be cleaned, wherein the squeegee lip edge (54) is arranged behind the support lip edge (56) in relation to a squeegeeing direction (108) of the suction nozzle (12), and the support lip (46) comprises at least one perforation, and wherein the squeegee lip (44) comprises a longitudinal portion (50) projecting forwards from the housing face side (40) in the direction pointing away from the suction channel (38), characterized in that the longitudinal portion (50) of the squeegee lip (44), projecting forwards from the housing face side (40) in the direction pointing away from the suction channel (38), is adjoined by at least one squeegee lip protrusion (52) which in the undeformed basic position of the squeegee lip (44) is inclined relative to the longitudinal portion (50) and which forms a squeegee lip edge (54) at its free end.
- Suction nozzle in accordance with Claim 1, characterized in that the at least one squeegee lip protrusion (52) is of hook-like configuration.
- Suction nozzle in accordance with Claim 1 or 2, characterized in that the squeegee lip (44) comprises a squeegee lip protrusion (52) which engages behind the support lip edge (56) in relation to the squeegee direction (108).
- Suction nozzle in accordance with Claim 1, 2, or 3, characterized in that the squeegee lip (44) comprises a longer and a shorter leg, which are oriented obliquely or perpendicularly to each other, wherein the longer leg forms the longitudinal portion (50) and the shorter leg forms a squeegee lip protrusion (52) of the squeegee lip (44).
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the squeegee lip (44) is of L-shaped configuration.
- Suction nozzle in accordance with any one of Claims 1 to 4, characterized in that the squeegee lip comprises two squeegee lip protrusions (182, 184; 212, 216; 232, 234; 242, 248; 272, 278; 302, 304; 322, 324), which each form a squeegee lip edge and point in different directions in relation to the longitudinal portion.
- Suction nozzle in accordance with Claim 6, characterized in that the squeegee lip comprises two squeegee lip protrusions (182, 184; 212, 216; 232, 234; 242, 248; 272, 278; 302, 304; 322, 324), which are configured in mirror-image fashion in relation to a midplane (194, 236, 328) of the longitudinal portion (190, 215, 254, 290, 306, 326) of the squeegee lip (180, 210, 230, 240, 270, 300, 320).
- Suction nozzle in accordance with Claim 6 or 7, characterized in that the squeegee lip (210, 230) is of T-shaped or Y-shaped configuration.
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the longitudinal portion (50) of the squeegee lip (44) in the undeformed basic position of the squeegee lip (44) is of rectilinear configuration.
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the squeegee lip (44) comprises a squeegee lip protrusion (52) which in the undeformed basic position of the squeegee lip (44) abuts against the front end region of the support lip (46).
- Suction nozzle in accordance with Claim 10, characterized in that the support lip (46) has at its front end region an end face (62) against which the squeegee lip protrusion (52) in the undeformed basic position of the squeegee lip (44) abuts with a contact face (64).
- Suction nozzle in accordance with Claim 11, characterized in that the end face (62) forms a wedge face which extends to the support lip edge (56).
- Suction nozzle in accordance with Claim 11 or 12, characterized in that the contact face (64) forms an inclined face (68) inclined at an obtuse angle to an underside (94) of the longitudinal portion (50).
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the at least one perforation of the support lip (46) is configured as recesses (76) arranged on the support lip edge (56).
- Suction nozzle in accordance with Claim 14, characterized in that the support lip (46) comprises on its support lip underside (60) remote from the squeegee lip (44) a multitude of depressions (78) which each open into a recess (76) arranged on the support lip edge (56).
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the support lip (46) comprises on its support lip upper side (58) facing toward the squeegee lip (44) a multitude of raised portions (70).
- Suction nozzle in accordance with Claim 16, characterized in that the raised portions (70) extend to an end face (62) arranged at the front end region of the support lip (46).
- Suction nozzle in accordance with Claim 16 or 17, characterized in that the raised portions (70) form rib-like flow directing elements (74).
- Suction nozzle in accordance with Claim 16, 17, or 18, characterized in that the raised portions (70) are arranged in a fan-shaped manner.
- Suction nozzle in accordance with any one of Claims 16 to 19, characterized in that the distances between mutually directly adjacent raised portions (70) increase with increasing distance from a central axis (72) of the suction nozzle housing (30).
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the squeegee lip (44) and/or the support lip (46) form side walls (84, 88) which laterally close the suction space (80) at least in part.
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the squeegee lip (44) comprises a first and a second side edge (82, 86), which delimit the width of the squeegee lip (44), and in that the squeegee lip (44) is reinforced in regions at a distance from the side edges (82, 86).
- Suction nozzle in accordance with Claim 22, characterized in that the squeegee lip (44) comprises on its squeegee lip upper side (92) remote from the support lip (46) at least one respective reinforcing rib (96, 98, 100, 102) at a distance from the side edges (82, 86).
- Suction nozzle in accordance with Claim 23, characterized in that a respective pair of reinforcing ribs (96, 98, 100, 102) is arranged at a distance from each side edge (82, 86).
- Suction nozzle in accordance with Claim 24, characterized in that the distance that a respective pair of reinforcing ribs (96, 98, 100, 102) has from the nearest side edge (82, 86) is about 4 mm to about 8 mm.
- Suction nozzle in accordance with Claim 24 or 25, characterized in that the distance between the two reinforcing ribs (96, 98, 100, 102) of a pair of reinforcing ribs is about 0.5 mm to 3 mm.
- Suction nozzle in accordance with any one of Claims 23 to 26, characterized in that the at least one reinforcing rib (96, 98, 100, 102) comprises a supporting face (104) which abuts against the housing face side (40) when the squeegee lip is deformed from the undeformed basic position in the direction pointing away from the support lip (46).
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the length (L1) of the region of the squeegee lip (44) protruding out of the suction nozzle housing (30) is at least 18 mm, in particular about 20 to 30 mm.
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the length (L2) of the region of the support lip (46) protruding out of the suction nozzle housing (30) is at least 16 mm, in particular about 20 to 30 mm.
- Suction nozzle in accordance with any one of the preceding Claims, characterized in that the squeegee lip (124, 134) comprises a first and a second side edge (126, 128; 136, 138), which delimit the width of the squeegee lip (124, 134), wherein the distance that the two side edges (126, 128; 136, 138) have from each other increases with increasing distance from the housing face side (40).
- Suction nozzle in accordance with Claim 30, characterized in that the region of the squeegee lip (124) protruding out of the suction nozzle housing (30) is of trapezoidal configuration in plan view.
- Portable hard surface suction appliance for squeegeeing and suctioning a liquid from a hard surface (106), in particular a window pane (110), having a suction assembly (18), a dirty liquid container (28) and a separating device (26) for separating liquid out of a suctioned up liquid-air mixture, and having a suction nozzle (12) in accordance with any one of the preceding Claims.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16777638T PL3518720T3 (en) | 2016-09-28 | 2016-09-28 | Suction nozzle and hard-surface suction apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2016/073129 WO2018059679A1 (en) | 2016-09-28 | 2016-09-28 | Suction nozzle and a hard-surface suction device |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3518720A1 EP3518720A1 (en) | 2019-08-07 |
EP3518720B1 true EP3518720B1 (en) | 2020-07-01 |
EP3518720B2 EP3518720B2 (en) | 2024-06-05 |
Family
ID=57083285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16777638.4A Active EP3518720B2 (en) | 2016-09-28 | 2016-09-28 | Suction nozzle and hard-surface suction apparatus |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3518720B2 (en) |
CN (1) | CN109640766B (en) |
PL (1) | PL3518720T3 (en) |
WO (1) | WO2018059679A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112442964A (en) * | 2019-09-05 | 2021-03-05 | 庐江县百树园食品有限公司 | Poultry is slaughtered and uses debris cleaning device |
CN112932357B (en) * | 2019-12-10 | 2024-05-24 | 苏州诚河清洁设备有限公司 | Floor nozzle for wet surface cleaning device and wet surface cleaning device |
EP3871578B1 (en) * | 2020-02-27 | 2023-08-23 | Vestel Elektronik Sanayi ve Ticaret A.S. | Nozzle for a cleaning device |
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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 |
WO2012119933A1 (en) | 2011-03-07 | 2012-09-13 | Goettler Karl | Hand-held cleaning device for smooth surfaces |
WO2014198559A1 (en) | 2013-06-14 | 2014-12-18 | Jacques Beij | Attachable receptacle |
EP2837316A2 (en) | 2013-08-13 | 2015-02-18 | Hoover Limited | Handheld suction cleaner |
DE102013021277A1 (en) | 2013-12-17 | 2015-07-02 | Nilfisk-Advance A/S | Portable hard surface suction device |
EP2929819A1 (en) | 2014-02-27 | 2015-10-14 | Stefan Dietz | Window cleaning device with storage container |
DE202016100286U1 (en) | 2016-01-22 | 2016-02-03 | Leifheit Ag | suction nozzle |
WO2016029967A1 (en) | 2014-08-29 | 2016-03-03 | Alfred Kärcher Gmbh & Co. Kg | Suction nozzle and a hard-surface suction device |
Family Cites Families (8)
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GB504083A (en) † | 1938-05-30 | 1939-04-19 | Constant Adolphe Antoine Josep | A new or improved scraper or squeegee |
US5920947A (en) † | 1997-05-16 | 1999-07-13 | Goldtime Products, Llc. | Apparatus for removing standing water from flat and contoured surfaces |
US7185388B2 (en) † | 2002-08-06 | 2007-03-06 | Harper Brush Works, Inc. | Power wave floor squeegee and handle connector |
DE102008004965B3 (en) * | 2008-01-11 | 2009-05-14 | Alfred Kärcher Gmbh & Co. Kg | Portable hard surface suction device |
DE202008018112U1 (en) * | 2008-01-11 | 2011-08-01 | Alfred Kärcher Gmbh & Co. Kg | suction nozzle |
WO2010018312A2 (en) * | 2008-08-11 | 2010-02-18 | Winddrop | Smooth surface scraper |
EP2964065A1 (en) * | 2013-03-04 | 2016-01-13 | Ecodrop | Suction device designed to suck air and liquid from a planar surface, and scraper blade for such a device |
WO2015007324A1 (en) * | 2013-07-18 | 2015-01-22 | Alfred Kärcher Gmbh & Co. Kg | Portable hard-surface cleaning device |
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2016
- 2016-09-28 PL PL16777638T patent/PL3518720T3/en unknown
- 2016-09-28 CN CN201680088630.6A patent/CN109640766B/en active Active
- 2016-09-28 WO PCT/EP2016/073129 patent/WO2018059679A1/en unknown
- 2016-09-28 EP EP16777638.4A patent/EP3518720B2/en active Active
Patent Citations (9)
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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 |
WO2012119933A1 (en) | 2011-03-07 | 2012-09-13 | Goettler Karl | Hand-held cleaning device for smooth surfaces |
WO2014198559A1 (en) | 2013-06-14 | 2014-12-18 | Jacques Beij | Attachable receptacle |
EP2837316A2 (en) | 2013-08-13 | 2015-02-18 | Hoover Limited | Handheld suction cleaner |
DE102013021277A1 (en) | 2013-12-17 | 2015-07-02 | Nilfisk-Advance A/S | Portable hard surface suction device |
EP2929819A1 (en) | 2014-02-27 | 2015-10-14 | Stefan Dietz | Window cleaning device with storage container |
WO2016029967A1 (en) | 2014-08-29 | 2016-03-03 | Alfred Kärcher Gmbh & Co. Kg | Suction nozzle and a hard-surface suction device |
DE202016100286U1 (en) | 2016-01-22 | 2016-02-03 | Leifheit Ag | suction nozzle |
Also Published As
Publication number | Publication date |
---|---|
PL3518720T3 (en) | 2020-11-30 |
EP3518720B2 (en) | 2024-06-05 |
CN109640766B (en) | 2021-05-14 |
CN109640766A (en) | 2019-04-16 |
WO2018059679A1 (en) | 2018-04-05 |
EP3518720A1 (en) | 2019-08-07 |
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