EP1173085B1 - Vacuum cleaner nozzle with scraper blade - Google Patents

Vacuum cleaner nozzle with scraper blade Download PDF

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Publication number
EP1173085B1
EP1173085B1 EP00920833A EP00920833A EP1173085B1 EP 1173085 B1 EP1173085 B1 EP 1173085B1 EP 00920833 A EP00920833 A EP 00920833A EP 00920833 A EP00920833 A EP 00920833A EP 1173085 B1 EP1173085 B1 EP 1173085B1
Authority
EP
European Patent Office
Prior art keywords
channel
vacuum cleaner
nozzle
plate
nozzle according
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.)
Expired - Lifetime
Application number
EP00920833A
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German (de)
French (fr)
Other versions
EP1173085A1 (en
Inventor
Jérôme Fabron
Fabien David
Jérôme CARDOT
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SEB SA
Original Assignee
SEB SA
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Filing date
Publication date
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Publication of EP1173085A1 publication Critical patent/EP1173085A1/en
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    • 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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • 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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • 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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0606—Nozzles with fixed, e.g. adjustably fixed brushes or the like rigidly anchored brushes, combs, lips or pads
    • A47L9/0626—Rigidly anchored lips, e.g. nozzles adapted for picking up liquids
    • 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
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0666—Nozzles with fixed, e.g. adjustably fixed brushes or the like with tilting, floating or similarly arranged brushes, combs, lips or pads

Definitions

  • the present invention relates to a vacuum cleaner nozzle, and more particularly an improvement in dust removal performance carpet-like surfaces.
  • a vacuum cleaner nozzle is generally in the form of a housing usually made of plastic, in particular comprising a base plate which, associated or not with a cover, delimits a suction channel.
  • the base plate has at least one flow channel open towards the surface to be cleaned and ventilation communication with the suction channel.
  • Such a nozzle 100 includes a scraper rule made of rubber material, having two lips 139 and 140 articulated around a fastener 121. On either side of this rule are arranged openings connecting the flow channel 141 with the suction channel 120.
  • the lip 139 closes the opening 260. The air is then sucked under the front edge 132 of the nozzle.
  • the rule allows, not only to collect and scrape the dust on the surface to be cleaned, but also to close the half-channel located at the back of the ruler relative to the direction of travel.
  • a vacuum cleaner nozzle comprising a scraper rule arranged in a fixed manner in the median plane of the squeegee flow channel and allowing the carpet hairs to be spread in order to reach the encrusted dust. If such a nozzle is more suitable for carpet type surfaces, due to the rigidity of the rule used, it is not very effective because part of the suction flow does not use the effect of the rule to increase the dust release power. In addition, the effect of the rule is not entirely satisfactory.
  • the object of the present invention is to remedy the drawbacks of the prior art by offering a nozzle with improved performance, while remaining reliable at long term and reasonable cost.
  • the scraper blade capable of being in contact with the ground lying upstream, in other words in front of the channel with respect to the direction of movement, the hairs of the carpet is then spread by the passage of the blade, which allows the dust to end up in the flow channel just open to the channel suction.
  • the function of the blade is therefore no longer to collect dust under the flow channel whose effectiveness is questionable, but to solicit the soil fibers to dislodge dust, immediately taken in a air flow.
  • the squeegee is moved in the wrong direction, it is best to close this specific channel to defer power suction on other more suitable flow channels of the squeegee.
  • the sealing means could be based on a cylinder driven in rotation by the squeegee wheels, this cylinder being fitted with weights, the point of rotation would be located on the periphery and forming projections that in a direction of rotation, these projections acting on an interlocking mechanism, or release, a channel shutter. Such a mechanism could be quite complicated.
  • the blade is movable under the effect of friction against the surface to clean in one direction, respectively in another direction, depending on the direction of displacement of the squeegee, and is connected to sealing means, respectively opening, of the adjacent canal.
  • the blade may be integral with the end of a plate movable in translation in grooves arranged in the lower plane of the squeegee perpendicular to the flow channel, this plate having, next to the blade, an opening corresponding to the mouth of the flow channel followed by a closing flap.
  • This plate is then arranged so that the friction of the ground, when the nozzle is advanced, pushes the blade towards the channel so that the opening of the plate comes in correspondence, and that, when the nozzle is pulled back, the soil friction moves the blade away from the channel bringing the closing flap into position.
  • the blade can be pivotally mounted around its upper edge on an axis parallel to the surface to be cleaned, this axis carrying a pinion meshing with a toothed wheel, or with a gear, animating at the outlet a shutter of obturation at the intersection of the flow channel and the suction channel.
  • a plate is mounted movable in rotation around an axis parallel to the channel, this axis separating this plate into a blade lower scraping and an upper channel shutter, this axis being arranged on one side of the mouth of the flow channel, the flap part shutter being capable of coming to bear against two stops arranged respectively at the front and rear of the canal.
  • a reverse scraping-opening device has thus been produced very simply.
  • This mechanical action which does not fail to occur as soon as the squeegee is displaced, can be reinforced by the presence of a foam, a joint, or a felt at the upper end of the shutter or at the internal walls of the squeegee duct in relation to the flap, so that during of the blade pivoting, the foam, the seal or the felt are slightly tablets and ensure a good seal and therefore a good sealing of this part of the canal.
  • the axis of the plate is located between one tenth and one third of the plate height, leaving most of the plate in operation shutter.
  • the scraper blade protrudes from a height between a and five millimeters when the shutter is in abutment against a stop. Thanks to this scraper blade, we can better define the ground clearance of the squeegee at the level of the flow channel, therefore the air flow.
  • the axis of the plate is arranged in the plane center of the channel which it splits into two channels, the shutter part being capable of coming into abutment against two stops arranged respectively at the front and back of the canal.
  • two channels open side by side, and the axis of the plate being arranged between the two adjacent channels, the part of shutter being capable of coming to bear against two stops arranged respectively at the front of the front channel and at the rear of the rear channel.
  • the surfaces of the two parts of the flow channel and / or of the part of the suction channel immediately adjacent to the surface to be cleaned, located on either side of the blade are significantly different. A surface greater then induces a vertical force to keep the squeegee on the ground more important.
  • This structure then makes it possible to differentiate the passage of the nozzle in one direction or in the opposite direction, the squeegee undergoing a force of attraction towards the ground stronger when the squeegee is moved in one direction rather than in the direction opposite.
  • This difference in area can also be achieved by a position asymmetric of the plate or by the profile of the flow channel, or by patches on the plate.
  • the level of penetration of the blade into the carpet can be different depending on the direction of movement of the squeegee, in order to cause a displacement force of the squeegee by the user different according to the direction of displacement.
  • This level, or ground clearance can be obtained by an angle of different blade rotation depending on the direction of movement, or by an axis of rotation of the off-center plate relative to said plate.
  • the nozzle has a mechanism for adjusting the height of the blade in the flow duct.
  • this device adjust the blade height in the factory according to the type of carpet frequently encountered in various countries, and on the other hand, it allows the user to adapt his nozzle to the different types of carpet he may have in his possession, in order to get the most out of his device.
  • the latter comprises at least one sealing flap located at the front and / or rear of the canals.
  • FIGS 1a and 1b schematically illustrate the general principle of the invention.
  • Two walls 1a and 1b of a nozzle define a suction channel 2 opening into a flow channel 4 open towards the surface to be cleaned.
  • the direction of movement F1 can be considered as a usual movement of the squeegee forward, direction F2 as a displacement of the squeegee backwards.
  • the surface to be cleaned is of the carpet type and includes inlaid bristles. dust 12.
  • a generally vertical plate 6 and of length similar to that of channel 4 is rotatably mounted around an axis horizontal 8 close to the front internal face.
  • This plate 6 forms a blade lower scraping 9b below the axis 8 and a shutter 9a at above this same axis.
  • the lower edge of the scraper blade in contact with carpet pile can be bevelled if you want a whip effect important on the hairs, or rounded to protect the floor to be cleaned as much as possible.
  • the upper edge of flap 9a can be completed with a flexible linear joint sealing.
  • the height of the blade can be adjusted to such height according to the networks commercial and / or when using a vacuum cleaner fitted with such a nozzle, in such a way that the blade arrives at the top of the hairs (touch) or more depth, for example at mid-height of the hairs, choice also depending on the type of carpet.
  • the flap 9a is plate against the front internal face of channel 4 when the nozzle is pushed towards the front according to arrow F1.
  • the carpet pile is then agitated by the blade scraping which favors the extraction of dust behind this blade scraping.
  • This dust is immediately collected by suction. Yes now the squeegee is pulled back, distorting the relationship between the blade scraping and the flow channel, then the tilting of the plate 6 brings the shutter 9a in the closed position and the scraper blade is found slightly raised.
  • Figures 2a, 2b and 3 show, very schematically, the general principle of the invention in the case of a large flow channel.
  • Two internal walls 1a and 1b of a squeegee 20 define a suction channel 2 opening into a channel 4a, 4b, open towards the surface to be cleaned and extending preferably in a direction perpendicular to the plane of the figure.
  • channel 4a is called “front” channel
  • channel 4b channel "rear”, taking into account the orientation of the nozzle according to FIG. 3.
  • the squeegee 20, as shown in Figure 3, can be provided with another channel suction 18.
  • it can have one or more wheels 14 in order to facilitate its movement.
  • a plate 6 is disposed in the nozzle and extends at least partially in the flow channel along its largest dimension, but can also extend into the suction channel. This plate is mounted on an axis 8 oriented parallel to the general direction of the plate.
  • the axis 8 On either side of the axis 8 extend two arms 9a and 9b defining respectively the shutter and the scraper blade, and the ends of which define the edges of the plate 6.
  • the end of the flap 9a allows block the part of the suction channel located above the front channel 4a or of the rear channel 4b according to the orientation of the plate 6.
  • the arm 9a may have a complex shape in the form multiple arms, giving the blade a Y or T shape, for example.
  • the plate 6 can be thick or thin depending on the type of stress desired, and have a wider shape at its end capable of being in contact with the ground than at its axis of rotation.
  • the other arm 9b is generally shorter than the arm 9a and is largely located in the flow channel. This arm, in normal position of the squeegee, leaves the squeegee, so that the edge of the blade, defined by this arm, can be in contact with carpet-like surfaces, even when the blade is pivoted around the 'axis 8.
  • the plate 6 pivots around the axis 8, by friction on the pile 10 of the carpet. from then, the arm 9a can bear against one of the walls 1a or 1b, or against a stopper attached to one of the walls.
  • the plate 6 can therefore only pivot at an angle limited on either side of its vertical position, achieving a obturation of the adjoining canal.
  • this arm 9a can be bevelled and / or covered with a foam, a seal or felt to reinforce this filling. It is also possible to overmold a soft plastic part at the end of this arm or these arms when the arm 9a is made up of two parts.
  • the arm 9b does not touch the floor in order to find a more classic aspiration, without specific activity of the nozzle.
  • the rotation of the plate around its pivot point can be symmetrical or asymmetrical in order to differentiate two directions of movement of the squeegee.
  • This asymmetry can be achieved by a judicious positioning or sizing of the stops and / or a off-center of the plate in the suction and / or flow channel.
  • a first improvement consists in increasing the tightness and disadvantaging the passage of air under the opposite edge of the squeegee, either by increasing the surface contact, either by placing sealing flaps 16a, 16b, on the side and on the other side of the plate, as shown in Figure 3, and, in a more general, at the front and / or rear of the suction or flow channel when it exists.
  • FIGS 4a and 4b show a first alternative embodiment.
  • two plates 22a and 22b are used, each plate containing individually the previously mentioned functions and effects. So the plate 22a is located in a channel 23a, and the plate 22b in a channel 23b.
  • Each plate is pivotally mounted around an axis 28a, 28b. Under the effect of a displacement of the squeegee, the blades, in contact with the bristles 10, pivot in closing the front or rear of the channel, depending on the direction F1 or F2 of movement of the nozzle, via the guide pieces 26a and 26b, of the separation 27 and the longitudinal walls 25a, 25b of the nozzle.
  • Stops can be arranged at several guide pieces 25a, 25b, 26a, 26b, 27 in order to limit the rotation of the plates.
  • stops 29a and 29b have been provided by an appropriate shape of the parts 25a and 25b.
  • flaps 30a and 30b can be placed at the level of the front and rear edges of the squeegee.
  • FIGS. 5a and 5b According to a second alternative embodiment, presented in FIGS. 5a and 5b, two plates are used but only one suction channel is activated. So the channel front 33a is constantly closed, as is the rear channel 33b. Thus, when the squeegee moves along F1 (forwards), the channel 33b is inactive and channel 33a active, the situation being reversed when the squeegee is moved along F2 (backwards).
  • the guide parts are simplified. Indeed, the plates 32a, 32b, pivotally mounted around their axis 38a, 38b, are guided in major part by the internal part of the edges of the squeegee, advantageously having a profile adapted to the shape of the blade, so as to leave only a slight guide clearance during rotation of the plate.
  • the plate has a base at the shutter, the profile of which is in an arc of circle.
  • the guide surfaces of the edges 35a and 35b and of the workpiece separation 37 separating the two blades are also in an arc.
  • a first improvement can be brought by values appreciably different from the contact surfaces with the surface to be cleaned of the two parts of the flow and / or suction channel, located on either side of the blade scraping.
  • This structure makes it possible to have a suction force on the channel 33a different from that on channel 33b.
  • a second improvement consists in modifying the height between the end of the blade and the ground, which we could call ground clearance, by analogy with the automotive field. By creating a more or less significant air leak at the level of the air space, the suction force is also modified.
  • FIGS. 5a and 5b One of the means enabling this difference in ground clearance between the two scraper blades, and presented in FIGS. 5a and 5b consists in rendering asymmetrical the stops of the shutters of the two plates, and this for each plate, this asymmetry being reversed from one plate to another.
  • FIG. 5a during the displacement of the nozzle according to F2, the "active" blade of scraping of the plate 32b pivots by an angle ⁇ , while the blade of the plate 32a pivots by an angle ⁇ 'when the squeegee moves along F1.
  • ⁇ ' more important than ⁇ or vice versa, depending on the configuration of the nozzle, so to obtain this asymmetry of force according to the direction of movement of the nozzle.
  • the angle of rotation ⁇ of the "inactive" blade for scraping the plate 32a when the squeegee is moved in the direction F2, can be more important that ⁇ , causing a vertical rise of the end of the blade of the plate 32a more important than the vertical ascent of the end of the blade of plate 32b.
  • the ground clearance of the plate 32a blade is therefore more important.
  • the blade of the plate 32a only touches the hairs 10, so it doesn't cause extra force to deploy to move the squeegee.
  • the dust 12 is sucked into the channel 33a or into the channel 33b.
  • a main plate 46 rotatably mounted about a pivot axis 48 has air injection channels 47a, 47b. These channels are open to the surface to be treated.
  • channels 47a and 47b are determined, on the one hand by an internal structure 40 of the nozzle, and on the other hand using secondary blades 42a and 42b associated with the main plate 46. These secondary blades are arranged on either side of the main plate in each providing an injection pipe on either side of the plate main.
  • these channels are connected to the outside of the nozzle.
  • the squeegee has air inlet holes allowing air to be injected taken outside the squeegee in channels 47a and 47b, then in the surface to clean.
  • the injection pipe is connected to a container containing treatment products, either in their own right or in association with a outside air intake, as previously described.
  • the treatment products used can be in liquid, powdered form, or in the form aerosols, ... It is then possible to combine a mechanical supply action of air and a physicochemical action by the product treating the carpet.
  • the profile of the secondary blades is studied, in association or not with additional parts, so that the obturation of one of the front channels or rear, due to the rotation of the plate 46, causes, at the same time, closing the air inlet channel opposite the closed suction channel.
  • the blade rotation angle can be identical depending on the direction of movement of the squeegee, or else present a different value, as shown in the figures 6a and 6b, where the angle ⁇ is of absolute value different from the angle ⁇ , leading to a ground clearance of the blade different depending on the direction of movement of the nozzle.
  • the effectiveness of the nozzle having such an embodiment can be increased by the presence of sealing flaps 44a and 44b.
  • blower means which may include a specific heating circuit. It is interesting in this case of collecting air at the engine outlet. This air allows, for example, to dry a carpet.
  • the shape of the duct can be adapted so that the air leaves in the form of an air gap, as described in application FR 98 10227.
  • the internal structure 40 as well as the internal shape of the edges 45a and 45b of the squeegee allow the guiding of the plate 46 and of the blades 42a, 42b, and also constitute stops. These stops can be arranged so asymmetrical with respect to the axis of rotation, thus constituting another means to vary the ground clearance of the scraper blade, as already mentioned in this application.
  • FIGs 7a and 7b A variant of this device is presented in Figures 7a and 7b. This variant takes up the essential elements of Figures 6a and 6b.
  • the plate 56 is not arranged symmetrically relative to to the axis of rotation 58. This asymmetry causes a rotation different from the plate and blades according to the movement given to the nozzle. For example, the plate scraper blade 56 sinks deeper into the carpet when the squeegee is moved in the direction F1 only when the squeegee is moved in direction F2.
  • This embodiment also has one of the abutment possibilities associated with the plate 56, constituted by an arm 57 from the internal structure 50 for guiding the nozzle.
  • Schematic figure 8 shows another alternative embodiment of the asymmetry of suction according to the direction of movement of the nozzle.
  • a nozzle 80 having a discharge channel 84 flared in direction of the surface to be treated comprises a plate 86 pivotally mounted around an axis 88, and separating the suction channel into two channels 83a and 83b.
  • the wall 81 a further comprises at least one opening 92 connecting the channel 83a to outside. This feature allows, when moving the nozzle according to F1, inject air at the squeegee through these openings 92.
  • the wall 81b does not not having these openings, we therefore create a dissymmetry of suction depending on the direction of movement of the squeegee.
  • this effect is obtained when at least one of the walls of the squeegee, delimiting, with the plate, one of the front or rear channels, comprises at least one conduit connecting said channel to the outside of the nozzle or to wind tunnel means.
  • a sealing bead 90 coordinated with the plate, can be arranged towards the lower end of the wall 81a.
  • FIG. 9 shows an alternative embodiment, arranged, by way of example, on a nozzle 60 of triangular shape, having a front suction mouth 70, extended by two lateral flow channels 71 and 72.
  • a channel located at the rear of the nozzle is composed of a front channel 63a and a rear channel 63b, separated by a plate 66, pivotally mounted around an axis 68, incorporating one of the variant embodiments of the present invention.
  • the first variant, presented in FIGS. 2a, 2b and 3 has been repeated, where the references 65a and 65b represent the internal walls of the squeegee enabling the channels 63a, 63b, to be closed. identical to walls 1a and 1b of FIGS. 2a, 2b and 3.
  • a mechanical support 67 of the plate 66 is arranged in the rear channel so to guide and strengthen the plate 66 in its rotation.
  • an air or product injection circuit processing is brought inside the plate 66, for example by obviously partial of the plate, and opens out, in the form of slots or holes 62 evenly distributed at the end of the scraper blade part likely to be in contact with the surface to be cleaned.
  • This feature allows a jet effect where the air passing through the plate is between two walls, either through the holes 62, takes a directed speed parallel to the axis of the holes. The air thus penetrates deeper into the heart carpet and can reach the bottom of the carpet which is a place difficult to access therefore difficult to clean.
  • the air flow is oriented in a direction established by the position of the blade which allows to direct the air intake in a less restrictive way and up to vertical.
  • the plate 66 is pierced with holes 61 of substantially axis perpendicular to said plate, said holes preferably being located in the lower part of the plate 66, at the level of the scraper blade, in order to create lateral dust extraction to recover air and dust possibly propelled on the side of the blade where the suction channel is closed.
  • the end of the scraper blade has a non-planar profile, either by making a bevel, either by cutting slots, or by adding bristles or tips. So the air enters through the spaces between the slots, directly at the level of the area to be cleaned, while providing a combing the carpet.
  • the presence of slots also allows the blade to sink more easily into the carpet.
  • the present device can be associated with a "big waste” type suction, such as the opening 70 presented in FIG. 9, or the opening 11 in FIG. 3, which allows the waste which are not between the pile of the carpet, but rather on the top of the carpet and would not pass easily under the scraper blade.
  • a "big waste” type suction such as the opening 70 presented in FIG. 9, or the opening 11 in FIG. 3, which allows the waste which are not between the pile of the carpet, but rather on the top of the carpet and would not pass easily under the scraper blade.
  • the squeegee then has, in addition to the device presented, an opening suction open to the surface to be cleaned and connected aeraulically to a suction channel, said suction opening being free of blade scraping.
  • the nozzle vacuum cleaner has a mechanism to adjust the height of the blade in the drain. This possibility allows you to specify the blade different types of carpet encountered, even in the factory, to specify the squeegees depending on the destination country. Furthermore, this convenience allows also to compensate for the wear of the blade as well as to be able to mount plates of different length keeping the same nozzle.
  • the plate is mounted fixed, the means shutter are made by moving parts in translation, such as flaps, the movement of these parts being controlled mechanically or electrically depending on whether the squeegee moves forward or backward.
  • a such control can be used in an autonomous robot type vacuum cleaner where such information and such control of the robot advance forward or backwards is available.
  • the plate can include a specific circuit air inlet as previously mentioned.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

The invention concerns a vacuum cleaner nozzle comprising at least a flow channel (4a, 4b) substantially transverse to the forward moving direction of the nozzle (24), open towards the surface to be cleaned, and in ventilating connection with a suction channel (2). The invention is characterised in that at least a scraper blade (9b) in contact with the floor to be cleaned is arranged parallel to the channel (4A, 4B) and adjacent thereto. Furthermore, closure means (9a) of the channel (4A, 4B) produce an opening of the channel when the nozzle is moved in a direction wherein the scraper blade is upstream of the channel and a closure of the channel when the nozzle is moved in the opposite direction.

Description

La présente invention concerne un suceur d'aspirateur à poussières, et plus particulièrement une amélioration des performances de dépoussiérage de surfaces de type moquette.The present invention relates to a vacuum cleaner nozzle, and more particularly an improvement in dust removal performance carpet-like surfaces.

Un suceur d'aspirateur se présente généralement sous la forme d'un boítier usuellement en plastique comportant notamment une plaque de base qui, associée ou non à un capot, délimite un canal d'aspiration. La plaque de base comporte au moins un canal d'écoulement ouvert vers la surface à nettoyer et en communication aéraulique avec le canal d'aspiration.A vacuum cleaner nozzle is generally in the form of a housing usually made of plastic, in particular comprising a base plate which, associated or not with a cover, delimits a suction channel. The base plate has at least one flow channel open towards the surface to be cleaned and ventilation communication with the suction channel.

Dans le but d'augmenter l'efficacité aéraulique du suceur, il est connu, par le document GB 855,613, un suceur tel que présenté figure 10. Un tel suceur 100 comporte une règle de raclage en matériau de type caoutchouc, présentant deux lèvres 139 et 140 articulées autour d'une attache 121. De part et d'autre de cette règle sont disposées des ouvertures mettant en liaison le canal d'écoulement 141 avec le canal d'aspiration 120. Lors du déplacement du suceur 100 selon la direction F1, sous l'effet du frottement avec la surface à nettoyer, la lèvre 139 vient obturer l'ouverture 260. L'air est alors aspiré sous le bord avant 132 du suceur.In order to increase the ventilation efficiency of the nozzle, it is known, by document GB 855,613, a nozzle as shown in FIG. 10. Such a nozzle 100 includes a scraper rule made of rubber material, having two lips 139 and 140 articulated around a fastener 121. On either side of this rule are arranged openings connecting the flow channel 141 with the suction channel 120. When the squeegee 100 moves according to the direction F1, under the effect of friction with the surface to be cleaned, the lip 139 closes the opening 260. The air is then sucked under the front edge 132 of the nozzle.

De la sorte, la règle permet, non seulement de rassembler et de racler les poussières sur la surface à nettoyer, mais aussi d'obturer le demi-canal situé à l'arrière de la règle par rapport au sens de déplacement.In this way, the rule allows, not only to collect and scrape the dust on the surface to be cleaned, but also to close the half-channel located at the back of the ruler relative to the direction of travel.

Cependant, si un tel suceur est relativement efficace sur des sols lisses, de type parquet ou carrelage, il est plutôt inefficace pour le nettoyage de sols de type moquette ou tapis. Dans la suite de ce document, on désignera par moquette, tout type de surface composée de fibres et/ou de poils, ces surfaces pouvant être des tapis, revêtements muraux, serviettes, moquettes.., However, if such a nozzle is relatively effective on smooth, parquet or tile, it is rather ineffective for cleaning type floors carpet or rug. In the rest of this document, we will designate by carpet, any type of surface composed of fibers and / or bristles, these surfaces can be carpets, wall coverings, towels, carpets ..,

En effet, pour de telles surfaces, la majeure partie de la poussière est localisée entre les poils de la moquette, ou en liaison physique avec la moquette, de sorte qu'il est difficile, avec un simple flux d'air d'aspiration, de déloger cette poussière.Indeed, for such surfaces, most of the dust is localized between the pile of the carpet, or in physical connection with the carpet, so that it is difficult, with a simple flow of suction air, to dislodge this dust.

Il est par ailleurs connu, par le document US 5,539,953, un suceur d'aspirateur comprenant une règle de raclage agencée de manière fixe dans le plan médian du canal d'écoulement du suceur et permettant d'écarter les poils de moquette afin d'atteindre la poussière incrustée. Si un tel suceur est plus adapté aux surfaces de type moquette, de par la rigidité de la règle utilisée, il n'est pas très efficace car une partie du flux d'aspiration n'utilise pas l'effet de la règle pour augmenter le pouvoir de décollement de la poussière. De plus, l'effet de la règle n'est pas entièrement satisfaisant.It is also known, from document US 5,539,953, a vacuum cleaner nozzle comprising a scraper rule arranged in a fixed manner in the median plane of the squeegee flow channel and allowing the carpet hairs to be spread in order to reach the encrusted dust. If such a nozzle is more suitable for carpet type surfaces, due to the rigidity of the rule used, it is not very effective because part of the suction flow does not use the effect of the rule to increase the dust release power. In addition, the effect of the rule is not entirely satisfactory.

La présente invention a pour but de remédier aux inconvénients de l'art antérieur en proposant un suceur aux performances améliorées, tout en restant fiable à long terme et d'un coût raisonnable.The object of the present invention is to remedy the drawbacks of the prior art by offering a nozzle with improved performance, while remaining reliable at long term and reasonable cost.

Ces buts sont atteints grâce à un suceur d'aspirateur selon la revendication 1.These objects are achieved by means of a vacuum cleaner nozzle according to claim 1.

La lame de raclage susceptible d'être en contact avec le sol se situant en amont, autrement dit en avant du canal par rapport au sens de déplacement, les poils de la moquette sont alors écartés par le passage de la lame, ce qui permet à la poussière de se retrouver dans le canal d'écoulement justement ouvert au canal d'aspiration. La fonction de la lame n'est donc plus de récolter les poussières sous le canal d'écoulement dont l'efficacité est discutable, mais de solliciter les fibres du sol pour en déloger les poussières, immédiatement prises dans un courant aéraulique. Par contre, si le suceur est déplacé dans le mauvais sens, il s'avère préférable de fermer ce canal spécifique pour reporter la puissance d'aspiration sur d'autres canaux d'écoulement plus appropriés du suceur.The scraper blade capable of being in contact with the ground lying upstream, in other words in front of the channel with respect to the direction of movement, the hairs of the carpet is then spread by the passage of the blade, which allows the dust to end up in the flow channel just open to the channel suction. The function of the blade is therefore no longer to collect dust under the flow channel whose effectiveness is questionable, but to solicit the soil fibers to dislodge dust, immediately taken in a air flow. On the other hand, if the squeegee is moved in the wrong direction, it is best to close this specific channel to defer power suction on other more suitable flow channels of the squeegee.

Les moyens d'obturation pourraient être basés sur un cylindre entraíné en rotation par les roues du suceur, ce cylindre étant garni de masselottes dont le point de rotation serait situé sur la périphérie et formant des ressauts que dans un sens de rotation, ces ressauts agissant sur un mécanisme d'enclenchement, ou de désenclenchement, d'un volet d'obturation de canal. Un tel mécanisme pourrait s'avérer assez compliqué.The sealing means could be based on a cylinder driven in rotation by the squeegee wheels, this cylinder being fitted with weights, the point of rotation would be located on the periphery and forming projections that in a direction of rotation, these projections acting on an interlocking mechanism, or release, a channel shutter. Such a mechanism could be quite complicated.

De préférence, la lame est mobile sous l'effet du frottement contre la surface à nettoyer dans un sens, respectivement dans un autre sens, selon le sens de déplacement du suceur, et est reliée à des moyens d'obturation, respectivement d'ouverture, du canal adjacent.Preferably, the blade is movable under the effect of friction against the surface to clean in one direction, respectively in another direction, depending on the direction of displacement of the squeegee, and is connected to sealing means, respectively opening, of the adjacent canal.

On met ainsi simplement en oeuvre le frottement entre la lame de raclage et le sol à nettoyer pour induire des mouvements mis à profit pour animer les moyens d'obturation.The friction between the scraper blade and the soil to be cleaned to induce movements used to animate the means shutter.

Par exemple, la lame peut être solidaire de l'extrémité d'une plaque mobile en translation dans des rainures agencées dans le plan inférieur du suceur perpendiculairement au canal d'écoulement, cette plaque présentant à côté de la lame une ouverture correspondante à l'embouchure du canal d'écoulement suivi d'un volet de fermeture. Cette plaque est alors agencée de telle sorte que le frottement du sol, lorsque le suceur est avancé, pousse la lame vers le canal afin que l'ouverture de la plaque vienne en correspondance, et que, lorsque le suceur est tiré en arrière, le frottement du sol éloigne la lame du canal amenant le volet de fermeture en position.
Selon un autre exemple, la lame peut être montée en pivotement autour de son bord supérieur sur un axe parallèle à la surface à nettoyer, cet axe portant un pignon engrenant avec une roue dentée, ou avec un engrenage, animant en sortie un volet d'obturation à l'intersection du canal d'écoulement et du canal d'aspiration.For example, the blade may be integral with the end of a plate movable in translation in grooves arranged in the lower plane of the squeegee perpendicular to the flow channel, this plate having, next to the blade, an opening corresponding to the mouth of the flow channel followed by a closing flap. This plate is then arranged so that the friction of the ground, when the nozzle is advanced, pushes the blade towards the channel so that the opening of the plate comes in correspondence, and that, when the nozzle is pulled back, the soil friction moves the blade away from the channel bringing the closing flap into position.
According to another example, the blade can be pivotally mounted around its upper edge on an axis parallel to the surface to be cleaned, this axis carrying a pinion meshing with a toothed wheel, or with a gear, animating at the outlet a shutter of obturation at the intersection of the flow channel and the suction channel.

Selon un mode de réalisation préféré, une plaque est montée mobile en rotation autour d'un axe parallèle au canal, cet axe séparant cette plaque en une lame inférieure de raclage et un volet supérieur d'obturation de canal, cet axe étant agencé sur un côté de l'embouchure du canal d'écoulement, la partie de volet d'obturation étant susceptible de venir en appui contre deux butées agencées respectivement à l'avant et à l'arrière du canal.According to a preferred embodiment, a plate is mounted movable in rotation around an axis parallel to the channel, this axis separating this plate into a blade lower scraping and an upper channel shutter, this axis being arranged on one side of the mouth of the flow channel, the flap part shutter being capable of coming to bear against two stops arranged respectively at the front and rear of the canal.

Alors, en prenant comme exemple un suceur ayant un sens normal de déplacement vers l'avant (arbitrairement mentionné F1) et dont le canal d'écoulement transversal est équipé en sa face interne avant d'une plaque pivotante, l'effet du frottement sur la partie inférieure de lame de raclage induit une rotation dans le sens horaire à la plaque amenant la partie supérieure de volet d'obturation contre la face interne avant, libérant le passage entre le canal d'écoulement et le canal d'aspiration. Si ce suceur est ensuite tiré en arrière, le frottement du sol sur la partie inférieure de lame de raclage induit une rotation en sens anti-horaire amenant la partie supérieure de volet d'obturation de l'autre côté en butée contre la face interne arrière obturant alors le canal.So, taking as an example a squeegee with a normal sense of moving forward (arbitrarily mentioned F1) and whose channel of transverse flow is equipped on its internal front face with a plate pivoting, the effect of friction on the lower part of the scraper blade induced a clockwise rotation to the plate bringing the upper part of shutter against the front internal face, freeing the passage between the channel and the suction channel. If this squeegee is then pulled back, the soil friction on the lower part of the scraper blade induces rotation in counterclockwise bringing the upper part of the shutter to the other side in abutment against the rear internal face then closing the channel.

On a ainsi réalisé très simplement un dispositif de raclage-ouverture inversé.A reverse scraping-opening device has thus been produced very simply.

Cette action mécanique, qui ne manque pas de se produire dès que le suceur est déplacé, peut être renforcée par la présence d'une mousse, d'un joint, ou d'un feutre au niveau de l'extrémité supérieur du volet d'obturation ou au niveau des parois internes du conduit du suceur en relation avec le volet, de sorte que lors du pivotement de la lame, la mousse, le joint ou le feutre sont légèrement comprimés et assurent une bonne étanchéité et donc une bonne obturation de cette partie du canal. This mechanical action, which does not fail to occur as soon as the squeegee is displaced, can be reinforced by the presence of a foam, a joint, or a felt at the upper end of the shutter or at the internal walls of the squeegee duct in relation to the flap, so that during of the blade pivoting, the foam, the seal or the felt are slightly tablets and ensure a good seal and therefore a good sealing of this part of the canal.

De préférence, l'axe de la plaque est situé entre un dixième et un tiers de la hauteur de la plaque, laissant la majeure partie de la plaque en fonctionnement de volet d'obturation.Preferably, the axis of the plate is located between one tenth and one third of the plate height, leaving most of the plate in operation shutter.

Utilement, la lame de raclage est protubérante d'une hauteur comprise entre un et cinq millimètres lorsque le volet d'obturation est en appui contre une butée. Grâce a cette lame de raclage, on peut mieux définir la garde au sol du suceur au niveau du canal d'écoulement, donc les flux aérauliques.Usefully, the scraper blade protrudes from a height between a and five millimeters when the shutter is in abutment against a stop. Thanks to this scraper blade, we can better define the ground clearance of the squeegee at the level of the flow channel, therefore the air flow.

Selon un autre mode de réalisation, l'axe de la plaque est agencé dans le plan médian du canal qu'elle dédouble en deux canaux, la partie de volet d'obturation étant susceptible de venir en appui contre deux butées agencées respectivement à l'avant et à l'arrière du canal.According to another embodiment, the axis of the plate is arranged in the plane center of the channel which it splits into two channels, the shutter part being capable of coming into abutment against two stops arranged respectively at the front and back of the canal.

Ainsi, on réalise très simplement une obturation sur le canal avant lorsque le suceur est déplacé vers l'avant, laissant le canal arrière, en aval par rapport à la lame de raclage, actif ; et on réalise une obturation sur le canal arrière lorsque le suceur est déplacé vers l'arrière, laissant le canal avant, maintenant en aval par rapport à la lame de raclage tel que vu par rapport à ce nouveau sens de déplacement, actif. Ainsi, en déplaçant le suceur vers l'avant ou vers l'arrière, l'effet technique précédemment décrit se produit, procurant, dans les deux sens de déplacement, une augmentation de l'efficacité de nettoyage.Thus, we very simply perform a filling on the front channel when the crevice is moved forward, leaving the rear channel, downstream from the scraper blade, active; and a obturation is made on the rear channel when the crevice is moved backwards, leaving the front channel, now downstream by compared to the scraper blade as seen in relation to this new sense of moving, active. So, by moving the squeegee forwards or backwards, the previously described technical effect occurs, providing in both directions displacement, increased cleaning efficiency.

Selon un autre mode de réalisation, deux canaux débouchent côte-à-côte, et l'axe de la plaque étant agencé entre les deux canaux adjacents, la partie de volet d'obturation étant susceptible de venir en appui contre deux butées agencées respectivement à l'avant du canal avant et à l'arrière du canal arrière.According to another embodiment, two channels open side by side, and the axis of the plate being arranged between the two adjacent channels, the part of shutter being capable of coming to bear against two stops arranged respectively at the front of the front channel and at the rear of the rear channel.

Avantageusement, les surfaces des deux parties du canal d'écoulement et/ou de la partie du canal d'aspiration immédiatement adjacent à la surface à nettoyer, situées de part et d'autre de la lame sont sensiblement différentes. Une surface plus importante induit alors une force verticale de maintien du suceur au sol plus importante. Advantageously, the surfaces of the two parts of the flow channel and / or of the part of the suction channel immediately adjacent to the surface to be cleaned, located on either side of the blade are significantly different. A surface greater then induces a vertical force to keep the squeegee on the ground more important.

Cette structure permet alors de différencier le passage du suceur dans un sens ou dans le sens opposé, le suceur subissant une force d'attraction vers le sol plus forte lorsque le suceur est déplacé dans un sens plutôt que dans le sens opposé.This structure then makes it possible to differentiate the passage of the nozzle in one direction or in the opposite direction, the squeegee undergoing a force of attraction towards the ground stronger when the squeegee is moved in one direction rather than in the direction opposite.

En augmentant par exemple la surface de la zone d'aspiration lorsque l'utilisateur tire le suceur vers lui, on permet au suceur de s'enfoncer davantage dans la moquette par une surface aspirée plus importante, ce qui permet de compenser la traction naturelle vers le haut, souvent exercée par l'utilisateur lorsqu'il ramène le suceur à lui.For example by increasing the surface of the suction area when the user pull the squeegee towards him, allow the squeegee to sink further into the carpet with a larger suction area, which compensates natural upward pull, often exerted by the user when bringing back the sucker to him.

Cette différence de surface peut également être réalisée par une position asymétrique de la plaque ou par le profil du canal d'écoulement, ou bien par des pièces rapportées sur la plaque.This difference in area can also be achieved by a position asymmetric of the plate or by the profile of the flow channel, or by patches on the plate.

Avantageusement, le niveau d'enfoncement de la lame dans la moquette peut être différent selon le sens de déplacement du suceur, dans le but de provoquer une force de déplacement du suceur par l'utilisateur différente selon le sens de déplacement. Ce niveau, ou garde au sol, peut être obtenu par un angle de rotation de la lame différent selon le sens de déplacement, ou par un axe de rotation de la plaque décentré par rapport à ladite plaque.Advantageously, the level of penetration of the blade into the carpet can be different depending on the direction of movement of the squeegee, in order to cause a displacement force of the squeegee by the user different according to the direction of displacement. This level, or ground clearance, can be obtained by an angle of different blade rotation depending on the direction of movement, or by an axis of rotation of the off-center plate relative to said plate.

Avantageusement, le suceur dispose d'un mécanisme permettant d'ajuster la hauteur de la lame dans le conduit d'écoulement. Ce dispositif permet d'une part de régler en usine la hauteur de la lame selon les types de moquette fréquemment rencontrés dans les divers pays, et d'autre part, il permet à l'utilisateur d'adapter son suceur aux différents types de moquette qu'il peut avoir en sa possession, afin de tirer le meilleur parti de son appareil.Advantageously, the nozzle has a mechanism for adjusting the height of the blade in the flow duct. On the one hand, this device adjust the blade height in the factory according to the type of carpet frequently encountered in various countries, and on the other hand, it allows the user to adapt his nozzle to the different types of carpet he may have in his possession, in order to get the most out of his device.

Avantageusement, afin d'augmenter l'efficacité du suceur, ce dernier comporte au moins une bavette d'étanchéité située à l'avant et/ou à l'arrière du ou des canaux. Advantageously, in order to increase the efficiency of the nozzle, the latter comprises at least one sealing flap located at the front and / or rear of the canals.

La présente invention sera mieux comprise à l'aide de la description qui va suivre, en référence aux figures annexées, parmi lesquelles :

  • la figure 10 est une vue schématique en coupe latérale d'un suceur de l'art antérieur,
  • les figures 1a et 1b représentent le principe de fonctionnement de la présente invention appliqué à un seul canal, dans une vue schématique selon une coupe latérale,
  • les figures 2a et 2b représentent le principe de fonctionnement de la présente invention appliqué à un double canal, dans une vue schématique selon une coupe latérale,
  • la figure 3 est une vue schématique d'un suceur d'aspirateur conforme à la présente invention,
  • les figures 4a et 4b présente une première variante de réalisation de la présente invention selon une coupe schématique latérale,
  • les figures 5a et 5b présentent une deuxième variante de réalisation de la présente invention selon une coupe schématique latérale,
  • les figures 6a et 6b présentent une troisième variante de réalisation de la présente invention selon une coupe schématique latérale,
  • les figures 7a et 7b présentent une quatrième variante de réalisation de la présente invention selon une coupe schématique latérale,
  • la figure 8 présente une cinquième variante de réalisation de la présente invention
  • la figure 9 présente une sixième variante de réalisation de la présente invention.
The present invention will be better understood with the aid of the description which follows, with reference to the appended figures, among which:
  • FIG. 10 is a schematic side section view of a nozzle of the prior art,
  • FIGS. 1a and 1b represent the operating principle of the present invention applied to a single channel, in a schematic view in a side section,
  • FIGS. 2a and 2b represent the operating principle of the present invention applied to a double channel, in a schematic view in a side section,
  • FIG. 3 is a schematic view of a vacuum cleaner nozzle according to the present invention,
  • FIGS. 4a and 4b show a first alternative embodiment of the present invention in a lateral schematic section,
  • FIGS. 5a and 5b show a second variant embodiment of the present invention in a lateral schematic section,
  • FIGS. 6a and 6b show a third alternative embodiment of the present invention in a lateral schematic section,
  • FIGS. 7a and 7b show a fourth variant embodiment of the present invention in a lateral schematic section,
  • Figure 8 shows a fifth alternative embodiment of the present invention
  • Figure 9 shows a sixth alternative embodiment of the present invention.

Les figures 1a et 1b illustrent de façon schématique le principe général de l'invention. Deux parois 1a et 1b d'un suceur définissent un canal d'aspiration 2 débouchant en un canal d'écoulement 4 ouvert vers la surface à nettoyer. Le sens de déplacement F1 peut être considéré comme un déplacement usuel du suceur vers l'avant, le sens F2 comme un déplacement du suceur vers l'arrière.Figures 1a and 1b schematically illustrate the general principle of the invention. Two walls 1a and 1b of a nozzle define a suction channel 2 opening into a flow channel 4 open towards the surface to be cleaned. The direction of movement F1 can be considered as a usual movement of the squeegee forward, direction F2 as a displacement of the squeegee backwards.

La surface à nettoyer est de type moquette et comprend des poils 10 incrustés de poussière 12. The surface to be cleaned is of the carpet type and includes inlaid bristles. dust 12.

Plus particulièrement selon l'invention, une plaque 6 généralement verticale et de longueur similaire à celle du canal 4 est montée en rotation autour d'un axe horizontal 8 proche de la face interne avant. Cette plaque 6 forme une lame inférieure de raclage 9b en dessous de l'axe 8 et un volet d'obturation 9a au dessus de ce même axe. Le bord inférieure de lame de raclage en contact avec les poils de la moquette peut être biseauté si on souhaite un effet de fouet important sur les poils, ou arrondi pour protéger au maximum le sol à nettoyer. Le bord supérieur du volet 9a peut être complété d'un joint linéaire souple d'étanchéité.More particularly according to the invention, a generally vertical plate 6 and of length similar to that of channel 4 is rotatably mounted around an axis horizontal 8 close to the front internal face. This plate 6 forms a blade lower scraping 9b below the axis 8 and a shutter 9a at above this same axis. The lower edge of the scraper blade in contact with carpet pile can be bevelled if you want a whip effect important on the hairs, or rounded to protect the floor to be cleaned as much as possible. The upper edge of flap 9a can be completed with a flexible linear joint sealing.

La hauteur de la lame peut être ajustée à telle hauteur selon les réseaux commerciaux et/ou lors de l'utilisation d'un aspirateur muni d'un tel suceur, de telle façon que la lame arrive en haut des poils (effleurement) ou plus en profondeur, par exemple à mi-hauteur des poils, choix dépendant également du type de moquette.The height of the blade can be adjusted to such height according to the networks commercial and / or when using a vacuum cleaner fitted with such a nozzle, in such a way that the blade arrives at the top of the hairs (touch) or more depth, for example at mid-height of the hairs, choice also depending on the type of carpet.

Comme on peut le constater en comparant les figures 1a et 1b, le volet 9a se plaque contre la face interne avant du canal 4 lorsque l'on pousse le suceur vers l'avant selon la flèche F1. Les poils de la moquette sont alors agités par la lame de raclage ce qui favorise l'extraction des poussières derrière cette lame de raclage. Ces poussières sont immédiatement récupérés par l'aspiration. Si maintenant le suceur est tiré en arrière, faussant la relation entre la lame de raclage et le canal d'écoulement, alors le basculement de la plaque 6 amène le volet d'obturation 9a en position de fermeture et la lame de raclage se retrouve légèrement relevée.As can be seen by comparing Figures 1a and 1b, the flap 9a is plate against the front internal face of channel 4 when the nozzle is pushed towards the front according to arrow F1. The carpet pile is then agitated by the blade scraping which favors the extraction of dust behind this blade scraping. This dust is immediately collected by suction. Yes now the squeegee is pulled back, distorting the relationship between the blade scraping and the flow channel, then the tilting of the plate 6 brings the shutter 9a in the closed position and the scraper blade is found slightly raised.

Les figures 2a, 2b et 3 présentent, de façon très schématique, le principe général de l'invention dans le cas d'un large canal d'écoulement. Deux parois internes 1a et 1b d'un suceur 20 définissent un canal d'aspiration 2 débouchant en un canal d'écoulement 4a, 4b, ouvert vers la surface à nettoyer et s'étendant préférentiellement selon une direction perpendiculaire au plan de la figure. Sur ce principe général, le canal 4a est dénommé canal " avant ", et le canal 4b, canal " arrière ", compte tenu de l'orientation du suceur selon la figure 3. Figures 2a, 2b and 3 show, very schematically, the general principle of the invention in the case of a large flow channel. Two internal walls 1a and 1b of a squeegee 20 define a suction channel 2 opening into a channel 4a, 4b, open towards the surface to be cleaned and extending preferably in a direction perpendicular to the plane of the figure. So general principle, channel 4a is called "front" channel, and channel 4b, channel "rear", taking into account the orientation of the nozzle according to FIG. 3.

Le suceur 20, tel que présenté figure 3, peut être muni d'un autre canal d'aspiration 18 . En outre, il peut posséder une ou plusieurs roues 14 afin de faciliter son déplacement.The squeegee 20, as shown in Figure 3, can be provided with another channel suction 18. In addition, it can have one or more wheels 14 in order to facilitate its movement.

Une plaque 6 est disposée dans le suceur et s'étend au moins en partie dans le canal d'écoulement selon sa plus grande dimension, mais peut également s'étendre dans le canal d'aspiration. Cette plaque est montée sur un axe 8 orienté parallèlement à la direction générale de la plaque.A plate 6 is disposed in the nozzle and extends at least partially in the flow channel along its largest dimension, but can also extend into the suction channel. This plate is mounted on an axis 8 oriented parallel to the general direction of the plate.

De part et d'autre de l'axe 8 s'étendent deux bras 9a et 9b définissant respectivement le volet d'obturation et la lame de raclage, et dont les extrémités définissent les bords de la plaque 6. L'extrémité du volet 9a permet de condamner la partie du canal d'aspiration situé au dessus du canal avant 4a ou du canal arrière 4b selon l'orientation de la plaque 6.On either side of the axis 8 extend two arms 9a and 9b defining respectively the shutter and the scraper blade, and the ends of which define the edges of the plate 6. The end of the flap 9a allows block the part of the suction channel located above the front channel 4a or of the rear channel 4b according to the orientation of the plate 6.

A titre de variante, le bras 9a peut présenter une forme complexe sous la forme de bras multiples, conférant à la lame une forme en Y ou en T, par exemple.Alternatively, the arm 9a may have a complex shape in the form multiple arms, giving the blade a Y or T shape, for example.

La plaque 6 peut être épaisse ou fine selon le type de sollicitation souhaité, et présenter une forme plus large à son extrémité susceptible d'être en contact avec le sol qu'au niveau de son axe de rotation.
L'autre bras 9b est généralement plus court que le bras 9a et est en grande partie localisé dans le canal d'écoulement. Ce bras, en position normale du suceur, sort du suceur, de manière à ce que le bord de la lame, défini par ce bras, puisse être en contact avec les surfaces de type moquette, même lors du pivotement de la lame autour de l'axe 8.The plate 6 can be thick or thin depending on the type of stress desired, and have a wider shape at its end capable of being in contact with the ground than at its axis of rotation.
The other arm 9b is generally shorter than the arm 9a and is largely located in the flow channel. This arm, in normal position of the squeegee, leaves the squeegee, so that the edge of the blade, defined by this arm, can be in contact with carpet-like surfaces, even when the blade is pivoted around the 'axis 8.

En fonctionnement, lorsque le suceur est déplacé selon la direction F1, la plaque 6 pivote autour de l'axe 8, par frottement sur les poils 10 de la moquette. Dès lors, le bras 9a peut prendre appui contre l'une des parois 1a ou 1b, ou contre une butée rapportée à l'une des parois. La plaque 6 ne peut donc pivoter que d'un angle limité de part et d'autre de sa position verticale, réalisant une obturation du canal attenant. In operation, when the squeegee is moved in the direction F1, the plate 6 pivots around the axis 8, by friction on the pile 10 of the carpet. from then, the arm 9a can bear against one of the walls 1a or 1b, or against a stopper attached to one of the walls. The plate 6 can therefore only pivot at an angle limited on either side of its vertical position, achieving a obturation of the adjoining canal.

Ainsi, lorsque le suceur est déplacé vers l'avant, le canal avant 4a est obturé. De la même manière, lorsque le suceur est déplacé vers l'arrière, le canal arrière 4b est obturé.Thus, when the nozzle is moved forward, the front channel 4a is closed. Of the same way, when the squeegee is moved backwards, the rear channel 4b is closed.

L'extrémité de ce bras 9a peut être biseautée et/ou recouvert d'une mousse, d'un joint ou d'un feutre afin de renforcer cette obturation. Il est également possible de surmouler une partie plastique molle à l'extrémité de ce bras ou de ces bras lorsque le bras 9a est constitué de deux parties.The end of this arm 9a can be bevelled and / or covered with a foam, a seal or felt to reinforce this filling. It is also possible to overmold a soft plastic part at the end of this arm or these arms when the arm 9a is made up of two parts.

Cet effet est particulièrement recherché sur moquette et ce bras doit donc s'enfoncer dans la moquette afin de solliciter les poils la constituant.This effect is particularly sought after on carpet and this arm must therefore sink into the carpet to stress the hairs constituting it.

Avantageusement, sur sol lisse, il est préférable que le bras 9b ne touche pas le sol afin de retrouver une aspiration plus classique, sans activité spécifique du suceur.Advantageously, on smooth ground, it is preferable that the arm 9b does not touch the floor in order to find a more classic aspiration, without specific activity of the nozzle.

Selon une caractéristique commune à toutes les réalisations de la présente invention comportant une plaque mobile, la rotation de la plaque autour de son point de pivotement peut être symétrique ou dissymétrique afin de différencier deux sens de déplacement du suceur. Cette dissymétrie peut être réalisée par un positionnement ou un dimensionnement judicieux des butées et/ou un décentrage de la plaque dans le canal d'aspiration et/ou d'écoulement.According to a characteristic common to all the embodiments of the present invention comprising a movable plate, the rotation of the plate around its pivot point can be symmetrical or asymmetrical in order to differentiate two directions of movement of the squeegee. This asymmetry can be achieved by a judicious positioning or sizing of the stops and / or a off-center of the plate in the suction and / or flow channel.

Une première amélioration consiste à augmenter l'étanchéité et défavoriser le passage de l'air sous le bord opposé du suceur, soit en augmentant la surface de contact, soit en plaçant des bavettes d'étanchéité 16a, 16b, de part et d'autre de la plaque, comme représenté figure 3, et, d'une manière plus générale, à l'avant et/ou à l'arrière du canal d'aspiration, ou d'écoulement lorsqu'il existe.A first improvement consists in increasing the tightness and disadvantaging the passage of air under the opposite edge of the squeegee, either by increasing the surface contact, either by placing sealing flaps 16a, 16b, on the side and on the other side of the plate, as shown in Figure 3, and, in a more general, at the front and / or rear of the suction or flow channel when it exists.

Les figures 4a et 4b présentent une première variante de réalisation. Selon ce schéma, deux plaques 22a et 22b sont utilisées, chaque plaque reprenant individuellement les fonctions et effets précédemment mentionnés. Ainsi, la plaque 22a est située dans un canal 23a, et la plaque 22b dans un canal 23b. Chaque plaque est montée pivotante autour d'un axe 28a, 28b. Sous l'effet d'un déplacement du suceur, les lames, en contact avec les poils 10, pivotent en obturant l'avant ou l'arrière du canal, selon le sens F1 ou F2 de déplacement du suceur, par l'intermédiaire des pièces de guidage 26a et 26b, de la pièce de séparation 27 et des parois longitudinales 25a, 25b du suceur.Figures 4a and 4b show a first alternative embodiment. According to what diagram, two plates 22a and 22b are used, each plate containing individually the previously mentioned functions and effects. So the plate 22a is located in a channel 23a, and the plate 22b in a channel 23b. Each plate is pivotally mounted around an axis 28a, 28b. Under the effect of a displacement of the squeegee, the blades, in contact with the bristles 10, pivot in closing the front or rear of the channel, depending on the direction F1 or F2 of movement of the nozzle, via the guide pieces 26a and 26b, of the separation 27 and the longitudinal walls 25a, 25b of the nozzle.

Des butées peuvent être disposées au niveau de plusieurs pièces de guidage 25a, 25b, 26a, 26b, 27 afin de limiter la rotation des plaques. A titre d'illustration, des butées 29a et 29b ont été ménagées par une forme appropriée des pièces 25a et 25b.Stops can be arranged at several guide pieces 25a, 25b, 26a, 26b, 27 in order to limit the rotation of the plates. For illustration, stops 29a and 29b have been provided by an appropriate shape of the parts 25a and 25b.

Les canaux ainsi mis en contact avec le conduit d'évacuation 24 permettent d'entraíner la poussière 12.The channels thus brought into contact with the discharge duct 24 allow dust 12.

Afin d'assurer l'étanchéité, des bavettes 30a et 30b peuvent être disposées au niveau des bords avant et arrière du suceur.In order to ensure sealing, flaps 30a and 30b can be placed at the level of the front and rear edges of the squeegee.

Selon une deuxième variante de réalisation, présentée aux figures 5a et 5b, deux plaques sont utilisées mais un seul canal d'aspiration est activé. Ainsi, le canal avant 33a est constamment obturé, tout comme le canal arrière 33b. Ainsi, lors d'un déplacement du suceur selon F1 (vers l'avant), le canal 33b est inactif et le canal 33a actif, la situation étant inversé lorsque le suceur est déplacé selon F2 (vers l'arrière).According to a second alternative embodiment, presented in FIGS. 5a and 5b, two plates are used but only one suction channel is activated. So the channel front 33a is constantly closed, as is the rear channel 33b. Thus, when the squeegee moves along F1 (forwards), the channel 33b is inactive and channel 33a active, the situation being reversed when the squeegee is moved along F2 (backwards).

Par ailleurs, les pièces de guidage sont simplifiées. En effet, les plaques 32a, 32b, montées pivotantes autour de leur axe 38a, 38b, sont guidées en majeure partie par la partie interne des rebords du suceur, présentant avantageusement un profil adapté à la forme de la lame, de telle manière à ne laisser qu'un faible jeu de guidage lors de la rotation de la plaque. Avantageusement, la plaque présente une embase au niveau du volet d'obturation, dont le profil est en arc de cercle. Ainsi, les surfaces de guidage des bords 35a et 35b et de la pièce de séparation 37 séparant les deux lames, sont également en arc de cercle. Furthermore, the guide parts are simplified. Indeed, the plates 32a, 32b, pivotally mounted around their axis 38a, 38b, are guided in major part by the internal part of the edges of the squeegee, advantageously having a profile adapted to the shape of the blade, so as to leave only a slight guide clearance during rotation of the plate. Advantageously, the plate has a base at the shutter, the profile of which is in an arc of circle. Thus, the guide surfaces of the edges 35a and 35b and of the workpiece separation 37 separating the two blades, are also in an arc.

Entre la pièce 37 et les rebords 35a et 35b est ménagé un espace définissant respectivement les canaux 33a et 33b d'aspiration. Ces canaux débouchent dans un canal d'évacuation 34.Between the part 37 and the edges 35a and 35b is provided a space defining respectively the suction channels 33a and 33b. These channels lead into an evacuation channel 34.

Sur ces figures sont présentées d'autres formes possibles pour les butées des volets d'obturation des plaques, consistant, dans ce cas, en des pièces 39a, 39b rapportées sur les rebords 35a et 35b du suceur, ainsi que des pièces 37a, 37b rapportées sur la pièce 37.In these figures are presented other possible forms for the stops of the plate shutters, consisting, in this case, of parts 39a, 39b reported on the edges 35a and 35b of the squeegee, as well as parts 37a, 37b reported on Exhibit 37.

En n'utilisant qu'un seul canal d'aspiration, on augmente l'efficacité du suceur, par rapport à la variante précédente. De plus, en utilisant un canal d'aspiration 33b, 33a de caractéristiques différentes selon le sens de déplacement F1 ou F2 du suceur, il est alors possible de tenir compte du fait que l'utilisateur pousse sur le suceur ou bien le tire vers lui.By using only one suction channel, the efficiency of the nozzle is increased, compared to the previous variant. In addition, using a suction channel 33b, 33a with different characteristics depending on the direction of travel F1 or F2 of the squeegee, it is then possible to take into account the fact that the user pushes on the sucker or else pulls it towards him.

En effet, ces deux actions ne sont pas identiques. Lorsque l'utilisateur tire le suceur vers lui, il exerce dans le même temps une action verticale de bas en haut, ce qui diminue l'efficacité du suceur.These two actions are not identical. When the user pulls the sucking towards him, he exerts at the same time a vertical action from bottom to high, which decreases the effectiveness of the nozzle.

Une première amélioration peut être apportée par des valeurs sensiblement différentes des surfaces de contact avec la surface à nettoyer des deux parties du canal d'écoulement et/ou d'aspiration, situées de part et d'autre de la lame de raclage. Cette structure permet d'avoir une force d'aspiration sur le canal 33a différente de celle sur le canal 33b.A first improvement can be brought by values appreciably different from the contact surfaces with the surface to be cleaned of the two parts of the flow and / or suction channel, located on either side of the blade scraping. This structure makes it possible to have a suction force on the channel 33a different from that on channel 33b.

Une deuxième amélioration consiste à modifier la hauteur entre l'extrémité de la lame et le sol, que l'on pourrait appeler garde au sol, par analogie avec le domaine automobile. En créant une fuite d'air plus ou moins importante au niveau de la lame d'air, on modifie également la force d'aspiration.A second improvement consists in modifying the height between the end of the blade and the ground, which we could call ground clearance, by analogy with the automotive field. By creating a more or less significant air leak at the level of the air space, the suction force is also modified.

Un des moyens permettant d'aboutir à cette différence de garde au sol entre les deux lames de raclage, et présenté figures 5a et 5b consiste à rendre dissymétrique les butées des volets d'obturation des deux plaques, et ceci pour chaque plaque, cette dissymétrie étant inversée d'une plaque à l'autre.One of the means enabling this difference in ground clearance between the two scraper blades, and presented in FIGS. 5a and 5b consists in rendering asymmetrical the stops of the shutters of the two plates, and this for each plate, this asymmetry being reversed from one plate to another.

Ainsi, figure 5a, lors du déplacement du suceur selon F2, la lame "active " de raclage de la plaque 32b pivote d'un angle α, alors que la lame de la plaque 32a pivote d'un angle α' lors d'un déplacement du suceur selon F1. On peut donc choisir α' plus important que α ou l'inverse, selon la configuration du suceur, afin d'obtenir cette dissymétrie de force selon le sens de déplacement du suceur.Thus, FIG. 5a, during the displacement of the nozzle according to F2, the "active" blade of scraping of the plate 32b pivots by an angle α, while the blade of the plate 32a pivots by an angle α 'when the squeegee moves along F1. So we can choose α 'more important than α or vice versa, depending on the configuration of the nozzle, so to obtain this asymmetry of force according to the direction of movement of the nozzle.

Avantageusement, l'angle de rotation β de la lame " inactive " de raclage de la plaque 32a, lorsque le suceur est déplacé selon la direction F2, peut être plus important que α, provoquant une remontée verticale de l'extrémité de la lame de la plaque 32a plus importante que la remontée verticale de l'extrémité de la lame de la plaque 32b. La garde au sol de la lame de la plaque 32a est donc plus importante. A la limite, la lame de la plaque 32a ne fait qu'effleurer les poils 10, de sorte qu'elle n'entraíne pas de force supplémentaire à déployer pour déplacer le suceur.Advantageously, the angle of rotation β of the "inactive" blade for scraping the plate 32a, when the squeegee is moved in the direction F2, can be more important that α, causing a vertical rise of the end of the blade of the plate 32a more important than the vertical ascent of the end of the blade of plate 32b. The ground clearance of the plate 32a blade is therefore more important. At the limit, the blade of the plate 32a only touches the hairs 10, so it doesn't cause extra force to deploy to move the squeegee.

De même, inversement (figure 5b), lors d'un déplacement du suceur selon F1, la lame de la plaque 32b pivote d'un angle β' supérieur à α', angles qui peuvent être différents respectivement de α et de β, pour les raisons déjà évoquées, afin de créer une dissymétrie entre les deux sens de déplacement du suceur.Similarly, conversely (FIG. 5b), during a displacement of the nozzle according to F1, the plate blade 32b pivots by an angle β 'greater than α', angles which can be different from α and β respectively, for the reasons already mentioned, in order to create an asymmetry between the two directions of movement of the squeegee.

La poussière 12 est aspirée dans le canal 33a ou dans le canal 33b.The dust 12 is sucked into the channel 33a or into the channel 33b.

Selon une troisième variante de réalisation présentée aux figures 6a et 6b, une plaque principale 46 montée mobile en rotation autour d'un axe de pivotement 48 comporte des canaux 47a, 47b d'injection d'air. Ces canaux sont ouverts vers la surface à traiter.According to a third alternative embodiment presented in FIGS. 6a and 6b, a main plate 46 rotatably mounted about a pivot axis 48 has air injection channels 47a, 47b. These channels are open to the surface to be treated.

Ces canaux peuvent être réalisés dans l'épaisseur de la plaque, par évidemment partiel, ou bien à l'aide de lames secondaires distinctes de la plaque principale. Ainsi, comme représenté aux figures 6a et 6b, les canaux 47a et 47b sont déterminés, d'une part par une structure interne 40 du suceur, et d'autre part à l'aide de lames secondaires 42a et 42b associées à la plaque principale 46. Ces lames secondaires sont disposées de part et d'autre de la plaque principale en ménageant chacune un conduit d'injection de part et d'autre de la plaque principale.These channels can be made in the thickness of the plate, obviously partial, or using secondary blades separate from the main plate. Thus, as shown in FIGS. 6a and 6b, the channels 47a and 47b are determined, on the one hand by an internal structure 40 of the nozzle, and on the other hand using secondary blades 42a and 42b associated with the main plate 46. These secondary blades are arranged on either side of the main plate in each providing an injection pipe on either side of the plate main.

Selon une première réalisation, ces canaux sont reliés à l'extérieur du suceur. Ainsi, le suceur possède des orifices d'entrée d'air permettant d'injecter de l'air pris à l'extérieur du suceur dans les canaux 47a et 47b, puis dans la surface à nettoyer.According to a first embodiment, these channels are connected to the outside of the nozzle. Thus, the squeegee has air inlet holes allowing air to be injected taken outside the squeegee in channels 47a and 47b, then in the surface to clean.

Selon une deuxième réalisation, le conduit d'injection est relié à un récipient contenant des produits traitants, soit à part entière soit en association avec une entrée d'air extérieur, comme précédemment décrit. Les produits traitants utilisés peuvent être sous forme liquide, pulvérulente, ou bien sous la forme d'aérosols,... Il est alors possible de combiner une action mécanique d'amenée d'air et une action physico-chimique par le produit traitant de la moquette.According to a second embodiment, the injection pipe is connected to a container containing treatment products, either in their own right or in association with a outside air intake, as previously described. The treatment products used can be in liquid, powdered form, or in the form aerosols, ... It is then possible to combine a mechanical supply action of air and a physicochemical action by the product treating the carpet.

Par ailleurs, le profil des lames secondaires est étudié, en association ou non avec des pièces complémentaires, pour que l'obturation de l'un des canaux avant ou arrière, dû à la rotation de la plaque 46, entraíne, dans le même temps, l'obturation du canal d'entrée d'air opposé au canal d'aspiration obturé.In addition, the profile of the secondary blades is studied, in association or not with additional parts, so that the obturation of one of the front channels or rear, due to the rotation of the plate 46, causes, at the same time, closing the air inlet channel opposite the closed suction channel.

Ainsi, selon la figure 6a, lorsque le suceur est déplacé selon la direction F1, la rotation de la plaque principale 46 et des lames secondaires 42a et 42b provoque une obturation, à la fois du canal avant 43a, mais également du canal d'entrée d'air 47b. Une injection d'air et/ou de produit traitant est alors réalisée par le canal 47a, participant ainsi à l'augmentation de l'efficacité de nettoyage de la moquette. Selon cette figure, la poussière, et éventuellement le produit traitant, est collectée par le canal arrière 43b.Thus, according to FIG. 6a, when the squeegee is moved in the direction F1, the rotation of the main plate 46 and the secondary blades 42a and 42b causes a closure, both of the front channel 43a, but also of the inlet channel air 47b. An injection of air and / or of treating product is then carried out by the channel 47a, thereby participating in increasing the cleaning efficiency of the carpet. According to this figure, the dust, and possibly the treating product, is collected by the rear channel 43b.

De même, lors d'un déplacement du suceur selon la direction F2, présenté figure 6b, la plaque 46 et les lames 42a et 42b pivotent autour de 48, conduisant à l'obturation du canal arrière 43b ainsi que du canal d'entrée d'air 47a. Une entrée d'air est alors réalisée par le canal 47b. La poussière est collectée par le canal avant 43a.Likewise, when the squeegee moves in the direction F2, shown in the figure 6b, the plate 46 and the blades 42a and 42b pivot around 48, leading to closing the rear channel 43b as well as the air inlet channel 47a. An entrance air is then produced by channel 47b. Dust is collected by the channel before 43a.

L'angle de rotation de la lame peut être identique selon le sens de déplacement du suceur, ou bien présenter une valeur différente, comme présenté aux figures 6a et 6b, où l'angle α est de valeur absolue différente de l'angle β, conduisant à une garde au sol de la lame différente selon le sens de déplacement du suceur.The blade rotation angle can be identical depending on the direction of movement of the squeegee, or else present a different value, as shown in the figures 6a and 6b, where the angle α is of absolute value different from the angle β, leading to a ground clearance of the blade different depending on the direction of movement of the nozzle.

L'efficacité du suceur présentant une telle réalisation peut être augmentée par la présence de bavettes d'étanchéité 44a et 44b.The effectiveness of the nozzle having such an embodiment can be increased by the presence of sealing flaps 44a and 44b.

Cette disposition peut être réalisée, dans le cadre des variantes des figures 4a, 4b, 5a et 5b, sur chaque lame présente.This arrangement can be made, within the framework of the variants of FIGS. 4a, 4b, 5a and 5b, on each blade present.

Il est tout à fait envisageable, sans sortir du cadre de la présente invention, d'amener de l'air chaud par ces conduits, air pouvant être généré par des moyens de soufflerie pouvant comporter un circuit spécifique de chauffage. Il est intéressant dans ce cas de figure de collecter l'air à la sortie moteur. Cet air permet, par exemple, de sécher une moquette.It is entirely possible, without departing from the scope of the present invention, to bring hot air through these conduits, air which can be generated by blower means which may include a specific heating circuit. It is interesting in this case of collecting air at the engine outlet. This air allows, for example, to dry a carpet.

De plus, la forme du conduit peut être adaptée pour que l'air sorte sous la forme d'une lame d'air, tel que décrit dans la demande FR 98 10227.In addition, the shape of the duct can be adapted so that the air leaves in the form of an air gap, as described in application FR 98 10227.

La structure interne 40 ainsi que la forme intérieure des bords 45a et 45b du suceur permettent le guidage de la plaque 46 et des lames 42a, 42b, et constituent également des butées. Ces butées peuvent être disposées de façon dissymétrique par rapport à l'axe de rotation, constituant ainsi un autre moyen pour faire varier la garde au sol de la lame de raclage, comme déjà mentionné dans la présente demande.The internal structure 40 as well as the internal shape of the edges 45a and 45b of the squeegee allow the guiding of the plate 46 and of the blades 42a, 42b, and also constitute stops. These stops can be arranged so asymmetrical with respect to the axis of rotation, thus constituting another means to vary the ground clearance of the scraper blade, as already mentioned in this application.

Une variante de ce dispositif est présentée aux figures 7a et 7b. Cette variante reprend les éléments essentiels des figures 6a et 6b. A variant of this device is presented in Figures 7a and 7b. This variant takes up the essential elements of Figures 6a and 6b.

Selon cette variante, la plaque 56 n'est pas disposée symétriquement par rapport à l'axe de rotation 58. Cette dissymétrie entraíne une rotation différente de la plaque et des lames selon le mouvement donné au suceur. A titre d'exemple, la lame de raclage de la plaque 56 s'enfonce davantage dans la moquette lorsque le suceur est déplacé selon la direction F1 que lorsque le suceur est déplacé selon la direction F2.According to this variant, the plate 56 is not arranged symmetrically relative to to the axis of rotation 58. This asymmetry causes a rotation different from the plate and blades according to the movement given to the nozzle. For example, the plate scraper blade 56 sinks deeper into the carpet when the squeegee is moved in the direction F1 only when the squeegee is moved in direction F2.

Cette réalisation présente également l'une des possibilités de butée associée à la plaque 56, constituée par un bras 57 issu de la structure interne 50 de guidage du suceur.
La figure schématique 8 présente une autre variante de réalisation de la dissymétrie d'aspiration selon le sens de déplacement du suceur.This embodiment also has one of the abutment possibilities associated with the plate 56, constituted by an arm 57 from the internal structure 50 for guiding the nozzle.
Schematic figure 8 shows another alternative embodiment of the asymmetry of suction according to the direction of movement of the nozzle.

La configuration générale reprend celle des figures 2a, 2b et 3, avec modification de la paroi 1a, référencée sur cette figure 81 a. En effet, cette paroi est de forme générale incurvée vers l'extérieur du suceur, contrairement à la paroi 81b, d'allure plus rectiligne.The general configuration is that of Figures 2a, 2b and 3, with modifications of the wall 1a, referenced in this figure 81 a. Indeed, this wall is shaped generally curved towards the outside of the squeegee, unlike the wall 81b, more rectilinear.

Selon cette variante, un suceur 80 présentant un canal d'évacuation 84 évasé en direction de la surface à traiter, comporte une plaque 86 montée en pivotement autour d'un axe 88, et séparant le canal d'aspiration en deux canaux 83a et 83b.According to this variant, a nozzle 80 having a discharge channel 84 flared in direction of the surface to be treated, comprises a plate 86 pivotally mounted around an axis 88, and separating the suction channel into two channels 83a and 83b.

La paroi 81 a comporte en outre au moins une ouverture 92 reliant le canal 83a à l'extérieur. Cette particularité permet, lors du déplacement du suceur selon F1, d'injecter de l'air au niveau du suceur par ces ouvertures 92. La paroi 81b ne comportant pas ces ouvertures, on crée bien alors une dissymétrie d'aspiration selon le sens de déplacement du suceur.The wall 81 a further comprises at least one opening 92 connecting the channel 83a to outside. This feature allows, when moving the nozzle according to F1, inject air at the squeegee through these openings 92. The wall 81b does not not having these openings, we therefore create a dissymmetry of suction depending on the direction of movement of the squeegee.

D'une manière plus générale, cet effet est obtenu lorsque au moins l'une des parois du suceur, délimitant, avec la plaque, l'un des canaux avant ou arrière, comporte au moins un conduit reliant ledit canal à l'extérieur du suceur ou à des moyens de soufflerie. More generally, this effect is obtained when at least one of the walls of the squeegee, delimiting, with the plate, one of the front or rear channels, comprises at least one conduit connecting said channel to the outside of the nozzle or to wind tunnel means.

Selon une variante de réalisation, un bourrelet d'étanchéité 90, coordonné à la plaque, peut être disposé vers l'extrémité inférieure de la paroi 81a.According to an alternative embodiment, a sealing bead 90, coordinated with the plate, can be arranged towards the lower end of the wall 81a.

La figure 9 présente une variante de réalisation, agencée, à titre d'exemple, sur un suceur 60 de forme triangulaire, présentant une embouchure d'aspiration avant 70, prolongé par deux canaux latéraux d'écoulement 71 et 72. Un canal situé à l'arrière du suceur est composé d'un canal avant 63a et d'un canal arrière 63b, séparés par une plaque 66, montée en pivotement autour d'un axe 68, reprenant l'une des variantes de réalisation de la présente invention.
A titre d'exemple et pour simplifier les explications, la première variante, présentée aux figures 2a, 2b et 3 a été reprise, où les références 65a et 65b représentent les parois internes du suceur permettant l'obturation des canaux 63a, 63b, de manière identique aux parois 1a et 1b des figures 2a, 2b et 3.FIG. 9 shows an alternative embodiment, arranged, by way of example, on a nozzle 60 of triangular shape, having a front suction mouth 70, extended by two lateral flow channels 71 and 72. A channel located at the rear of the nozzle is composed of a front channel 63a and a rear channel 63b, separated by a plate 66, pivotally mounted around an axis 68, incorporating one of the variant embodiments of the present invention.
By way of example and to simplify the explanations, the first variant, presented in FIGS. 2a, 2b and 3 has been repeated, where the references 65a and 65b represent the internal walls of the squeegee enabling the channels 63a, 63b, to be closed. identical to walls 1a and 1b of FIGS. 2a, 2b and 3.

Un support mécanique 67 de la plaque 66 est disposé dans le canal arrière afin de guider et de renforcer la plaque 66 dans sa rotation.A mechanical support 67 of the plate 66 is arranged in the rear channel so to guide and strengthen the plate 66 in its rotation.

Selon cette variante de réalisation, un circuit d'injection d'air ou de produit traitant est amené à l'intérieur de la plaque 66, par exemple par évidemment partiel de la plaque, et débouche, sous la forme de fentes ou de trous 62 régulièrement répartis, à l'extrémité de la partie de la lame de raclage susceptible d'être en contact avec la surface à nettoyer.According to this alternative embodiment, an air or product injection circuit processing is brought inside the plate 66, for example by obviously partial of the plate, and opens out, in the form of slots or holes 62 evenly distributed at the end of the scraper blade part likely to be in contact with the surface to be cleaned.

Cette particularité permet un effet de jet où l'air, passant dans la plaque, soit entre deux parois, soit à travers les trous 62, prend une vitesse dirigée parallèlement à l'axe des trous. L'air pénètre ainsi plus profondément au coeur de la moquette et peut atteindre le fond de la moquette, qui est un endroit difficile d'accès donc difficile à nettoyer.This feature allows a jet effect where the air passing through the plate is between two walls, either through the holes 62, takes a directed speed parallel to the axis of the holes. The air thus penetrates deeper into the heart carpet and can reach the bottom of the carpet which is a place difficult to access therefore difficult to clean.

De plus, le flux d'air se trouve orienté dans une direction établie par la position de la lame ce qui permet de diriger l'entrée d'air de façon moins restrictive et pouvant aller jusqu'à la verticale. In addition, the air flow is oriented in a direction established by the position of the blade which allows to direct the air intake in a less restrictive way and up to vertical.

Le choix de la forme (entrée d'air unique ou multiple, plusieurs trous...) et de la section de passage de cette entrée d'air permettent de canaliser une énergie aéraulique agissant directement à l'extrémité de la plaque, au niveau de la lame de raclage, mais pouvant agir également dans le fond de la moquette pour y décoller les poussières.The choice of shape (single or multiple air inlet, several holes ...) and the passage section of this air inlet allow energy to be channeled ventilation acting directly at the end of the plate, at the level of the blade scraping, but can also act in the bottom of the carpet to take off the dust.

Avantageusement la plaque 66 est percée de trous 61 d'axe sensiblement perpendiculaire à ladite plaque, lesdits trous étant situés de préférence dans la partie inférieure de la plaque 66, au niveau de la lame de raclage, afin de créer une aspiration latérale de poussières permettant de récupérer l'air et les poussières éventuellement propulsé du coté de la lame où le canal d'aspiration est obturé.Advantageously, the plate 66 is pierced with holes 61 of substantially axis perpendicular to said plate, said holes preferably being located in the lower part of the plate 66, at the level of the scraper blade, in order to create lateral dust extraction to recover air and dust possibly propelled on the side of the blade where the suction channel is closed.

Avantageusement, selon l'une quelconque des variantes de réalisation de l'invention, l'extrémité de la lame de raclage possède un profil non plan, soit par la réalisation d'un biseau, soit par la découpe de créneaux, soit par l'ajout de poils ou de pointes. Ainsi, l'air pénètre par les espaces entre les créneaux, directement au niveau de la zone à nettoyer, tout en apportant un effet de peignage de la moquette. La présence de créneaux permet également à la lame de s'enfoncer plus facilement dans la moquette.Advantageously, according to any one of the variant embodiments of the invention, the end of the scraper blade has a non-planar profile, either by making a bevel, either by cutting slots, or by adding bristles or tips. So the air enters through the spaces between the slots, directly at the level of the area to be cleaned, while providing a combing the carpet. The presence of slots also allows the blade to sink more easily into the carpet.

Il est important de noter que le présent dispositif peut être associé à une aspiration de type " gros déchets ", comme par exemple l'ouverture 70 présentée à la figure 9, ou l'ouverture 11 de la figure 3, qui permet d'aspirer les déchets qui ne sont pas entre les poils de la moquette, mais plutôt sur le dessus de la moquette et qui ne passeraient pas facilement sous la lame de raclage.It is important to note that the present device can be associated with a "big waste" type suction, such as the opening 70 presented in FIG. 9, or the opening 11 in FIG. 3, which allows the waste which are not between the pile of the carpet, but rather on the top of the carpet and would not pass easily under the scraper blade.

Le suceur dispose alors, en plus du dispositif présenté, d'une ouverture d'aspiration ouverte vers la surface à nettoyer et reliée de manière aéraulique à un canal d'aspiration, ladite ouverture d'aspiration étant exempte de lame de raclage. The squeegee then has, in addition to the device presented, an opening suction open to the surface to be cleaned and connected aeraulically to a suction channel, said suction opening being free of blade scraping.

Cette association permet de créer une synergie entre une aspiration de surface, capable de débarrasser la surface de la moquette des déchets les plus encombrants et les plus accessibles, tout en permettant une action en profondeur par le dispositif présenté.This association makes it possible to create a synergy between a surface aspiration, able to rid the surface of the carpet of the most waste bulky and the most accessible, while allowing action in depth by the device presented.

Selon l'une des formes quelconques de réalisation de l'invention, le suceur d'aspirateur dispose d'un mécanisme permettant d'ajuster la hauteur de la lame dans le conduit d'écoulement. Cette possibilité permet de spécifier la lame aux différents types de moquette rencontrés, voire en usine, de spécifier les suceurs en fonction des pays destinataires. Par ailleurs, cette commodité permet également de rattraper l'usure de la lame ainsi que de pouvoir monter des plaques de longueur différentes en conservant le même suceur.According to any of the embodiments of the invention, the nozzle vacuum cleaner has a mechanism to adjust the height of the blade in the drain. This possibility allows you to specify the blade different types of carpet encountered, even in the factory, to specify the squeegees depending on the destination country. Furthermore, this convenience allows also to compensate for the wear of the blade as well as to be able to mount plates of different length keeping the same nozzle.

Selon une dernière variante de réalisation, la plaque est montée fixe, les moyens d'obturation sont réalisés par des pièces mobiles en translation, telles des volets, la commande du déplacement de ces pièces étant assurée mécaniquement ou électriquement selon que le suceur se déplace vers l'avant ou vers l'arrière. Une telle commande peut être utilisée dans un aspirateur autonome de type robot où un tel renseignement et une telle commande de l'avance du robot vers l'avant ou vers l'arrière est disponible.According to a final variant, the plate is mounted fixed, the means shutter are made by moving parts in translation, such as flaps, the movement of these parts being controlled mechanically or electrically depending on whether the squeegee moves forward or backward. A such control can be used in an autonomous robot type vacuum cleaner where such information and such control of the robot advance forward or backwards is available.

Selon toutes ces réalisations, la plaque peut comporter un circuit spécifique d'entrée d'air comme précédemment mentionné.According to all these embodiments, the plate can include a specific circuit air inlet as previously mentioned.

Claims (30)

  1. A suction nozzle comprising at least one flow channel (4, 4a, 4b) extending substantially transversely to the travel direction of the nozzle (20, 60, 80, 100), being open towards the surface to be cleaned and being connected in air-flow manner to a suction channel (2, 23a, 23b, 33a, 33b, 43a, 43b, 63a, 63b, 83a, 83b); at least one blade (9b) suitable for coming into contact with the floor to be cleaned arranged in the flow channel, parallel thereto, and shutter means for shutting off at least a portion of the flow channel and/or the suction channel, the shutter means enabling a portion of the flow channel and/or the suction channel to be open when the nozzle is moved in one displacement direction in which the blade extends transversely to said displacement direction, and closing said same portion of the channel when the nozzle is displaced in the opposite direction, the nozzle being characterized in that the blade is disposed in front of the open portion of the flow channel in the travel direction.
  2. A vacuum cleaner nozzle according to claim 1, characterized in that the blade (9b) is movable under the effect of friction against the surface to be cleaned, respectively in one direction or in another direction, depending on the displacement direction (F1, F2) of the nozzle (20, 60, 80, 100), and is connected to means for respectively shutting and opening a portion of the flow channel and/or of the suction channel.
  3. A vacuum cleaner nozzle according to claim 2, characterized in that a plate (6, 22a, 22b, 32a, 46, 56, 66, 86) is mounted to pivot about a shaft (8, 28a, 28b, 38a, 38b, 48, 58, 68, 88) parallel to the flow channel, said shaft subdividing the plate into a scraper blade (9b) at the bottom and a channel shutter flap (9a) at the top, said shaft being arranged on one side of the mouth of the flow channel, the shutter flap portion being suitable for coming to press against two abutments (1a, 1b, 29a, 29b, 39a, 39b, 57) arranged respectively at the front and at the rear of the flow channel and/or the suction channel depending on the displacement direction of the nozzle.
  4. A vacuum cleaner nozzle according to claim 3, characterized in that the shaft (8, 28a, 28b, 38a, 38b, 48, 58, 68, 88) of the plate (6, 22a, 22b, 32a, 32b, 46, 56, 66, 86) is situated at a height lying in the range one-tenth to one-third the height of said plate.
  5. A vacuum cleaner nozzle according to any one of claims 2 to 4, characterized in that the scraper blade (9b) projects over a height lying in the range 1 mm to 5 mm when the shutter flap bears against an abutment (1a, 1b, 29a, 29b, 39a, 39b, 57).
  6. A vacuum cleaner nozzle according to any one of claims 3 to 5, characterized in that the shaft (8, 28a, 28b, 38a, 38b, 48, 58, 88, 68) of the plate (6, 22a, 22b, 32a, 32b, 46, 56, 66, 86) is arranged in the midplane of the flow channel which it splits into two, the shutter flap portion being suitable for coming to bear against two abutments arranged respectively in front of and behind the flow channel and/or the suction channel, depending on the displacement direction of the nozzle.
  7. A vacuum cleaner nozzle according to any one of claims 3 to 5, characterized in that the two flow channels open out side by side, and in that the shaft (28a, 28b, 38a, 38b) of the plate (22a, 22b, 32a, 32b) is arranged between the two adjacent flow channels, the shutter flap portion being suitable for coming to bear against two abutments arranged respectively at the front of the front flow channel and at the rear of the rear flow channel depending on the displacement direction of the nozzle.
  8. A vacuum cleaner nozzle according to the preceding claim, characterized in that it has means for modifying the small clearance of the nozzle, depending on the displacement direction (F1, F2) of said nozzle (20, 60, 80, 100).
  9. A vacuum cleaner nozzle according to the preceding claim, characterized in that the means for modifying floor clearance consist in the blade sloping asymmetrically towards the front flow channel and towards the rear flow channel depending on the displacement direction of the nozzle.
  10. A vacuum cleaner nozzle according to claim 8, characterized in that the means for modifying the floor clearance are implemented by the plate (56) being off-center relative to the pivot shaft (58) of said plate.
  11. A vacuum cleaner nozzle according to any preceding claim, characterized in that the plate (46, 56, 66) has at least one injection channel (47a, 47b) open towards the surface to be cleaned.
  12. A vacuum cleaner nozzle according to claim 11, characterized in that at least one injection channel (47a, 47b) is made in the thickness of the plate.
  13. A vacuum cleaner nozzle according to claim 11, characterized in that secondary blades (42a, 42b) are associated with a central plate (46, 56), said blades (42a, 42b) being disposed on either side of the plate (46, 56) and each defining a respective injection duct (47a, 47b) on the corresponding side of said plate (46, 56).
  14. A vacuum cleaner nozzle according to the preceding claim, characterized in that the profile of the secondary blades (42a, 42b) is designed, optionally in co-operation with additional pieces, so that shutting of one of the front or rear suction channels by pivoting the plate (46, 56) leads simultaneously to the air inlet channel remote from the shut-off suction channel also being shut off.
  15. A vacuum cleaner nozzle according to any one of claims 11 to 14, characterized in that the injection channel (47a, 47b) is connected to the outside of the nozzle or to blower means, causing air to enter into the surface for cleaning when the vacuum cleaner is put into operation.
  16. A vacuum cleaner nozzle according to any one of claims 11 to 15, characterized in that the injection channel (47a, 47b) is connected to a receptacle containing cleaning substances.
  17. A vacuum cleaner nozzle according to any one of claims 11 to 16, characterized in that the injection channel (47a, 47b) opens out in the form of regularly spaced-apart slots or holes (62) at the end of that portion of the scraper blade that is likely to be in contact with the surface to be cleaned.
  18. A vacuum cleaner nozzle according to any preceding claim, characterized in that the abutments (37a, 37b, 39a, 39b, 57) are situated in the front and/or rear flow channels and/or suction channels and/or injection channels depending on the displacement direction of the nozzle in association with at least one inside edge (1a, 1b, 27a, 27b, 29a, 29b, 45a, 45b, 81a, 81b) of the plate (6, 22a, 22b, 32a, 32b, 46, 56, 66, 86) in order to limit pivoting of said plate.
  19. A vacuum cleaner nozzle according to any one of claims 1 to 10, characterized in that at least one of the walls of the nozzle co-operating with the plate (86) define one of the front or rear flow channels depending on the displacement direction of the nozzle includes at least one duct connecting said channel to outside the nozzle (80) or to blower means.
  20. A vacuum cleaner nozzle according to any preceding claim, characterized in that the plate (66) is pierced by holes (61) of axis substantially perpendicular to said plate (66), said holes (61) being situated in the bottom portion of the plate (66), in the scraper blade.
  21. A vacuum cleaner nozzle according to any preceding claim, characterized in that it has a mechanism enabling the height of the blade in the flow duct and/or the suction duct to be adjusted.
  22. A vacuum cleaner nozzle according to any preceding claim, characterized in that the front and rear flow channels depending on the displacement direction of the nozzle, situated on either side of the blade, present significantly different areas of contact with the surface to be cleaned.
  23. A vacuum cleaner nozzle according to any preceding claim, characterized in that the end of the scraper blade that is likely to come into contact with the surface to be cleaned, is chamfered.
  24. A vacuum cleaner nozzle according to any preceding claim, characterized in that the end of the scraper blade, that is likely to come into contact with the surface to be cleaned, is crenellated.
  25. A vacuum cleaner nozzle according to any preceding claim, characterized in that the end of the scraper blade, that is likely to come into contact with the surface to be cleaned, is provided with bristles.
  26. A vacuum cleaner nozzle according to any preceding claim, characterized in that it includes at least one sealing bib (16a, 16b, 30a, 30b, 44a, 44b) situated at the front and/or rear of the nozzle (20, 60, 80, 100), and/or situated at the front and/or the rear of the suction or flow channel(s), depending on the displacement direction of the nozzle.
  27. A nozzle according to claim 1 or claim 2, characterized in that the shutter means are controlled mechanically by the skids or wheels (14) on which the nozzle (20, 60, 80, 100) is displaced.
  28. A nozzle according to claim 1 or claim 2, characterized in that the shutter means are controlled electrically and consist in flaps that are movable in translation and/or in rotation.
  29. A nozzle according to any preceding claim, characterized in that it further presents a suction opening (11, 70) open towards the surface to be cleaned and connected in air-flow manner to a suction channel, said suction opening having no scraper blade.
  30. A vacuum cleaner comprising in particular a motor unit suitable for generating a suction flow of air in ducts terminated by a nozzle (20, 60, 80, 100) that is open towards a surface to be cleaned, the vacuum cleaner being characterized in that said nozzle is in accordance with any one of claims 1 to 29.
EP00920833A 1999-04-29 2000-04-18 Vacuum cleaner nozzle with scraper blade Expired - Lifetime EP1173085B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9905618 1999-04-29
FR9905618A FR2792817B1 (en) 1999-04-29 1999-04-29 VACUUM CLEANER WITH RECLAMATION BLADE
PCT/FR2000/001009 WO2000065979A1 (en) 1999-04-29 2000-04-18 Vacuum cleaner nozzle with scraper blade

Publications (2)

Publication Number Publication Date
EP1173085A1 EP1173085A1 (en) 2002-01-23
EP1173085B1 true EP1173085B1 (en) 2003-03-26

Family

ID=9545168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00920833A Expired - Lifetime EP1173085B1 (en) 1999-04-29 2000-04-18 Vacuum cleaner nozzle with scraper blade

Country Status (10)

Country Link
EP (1) EP1173085B1 (en)
KR (1) KR20020021092A (en)
CN (1) CN1351477A (en)
AT (1) ATE235182T1 (en)
AU (1) AU4125900A (en)
DE (1) DE60001818T2 (en)
FR (1) FR2792817B1 (en)
HK (1) HK1045448A1 (en)
TR (1) TR200103089T2 (en)
WO (1) WO2000065979A1 (en)

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Also Published As

Publication number Publication date
FR2792817A1 (en) 2000-11-03
DE60001818T2 (en) 2003-12-11
AU4125900A (en) 2000-11-17
WO2000065979A1 (en) 2000-11-09
DE60001818D1 (en) 2003-04-30
TR200103089T2 (en) 2002-05-21
EP1173085A1 (en) 2002-01-23
FR2792817B1 (en) 2001-06-29
ATE235182T1 (en) 2003-04-15
CN1351477A (en) 2002-05-29
HK1045448A1 (en) 2002-11-29
KR20020021092A (en) 2002-03-18

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