EP4309556A1 - Ensemble de buse d'aspirateur - Google Patents

Ensemble de buse d'aspirateur Download PDF

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Publication number
EP4309556A1
EP4309556A1 EP23186713.6A EP23186713A EP4309556A1 EP 4309556 A1 EP4309556 A1 EP 4309556A1 EP 23186713 A EP23186713 A EP 23186713A EP 4309556 A1 EP4309556 A1 EP 4309556A1
Authority
EP
European Patent Office
Prior art keywords
suction
base body
vacuum cleaner
nozzle
nozzle arrangement
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.)
Pending
Application number
EP23186713.6A
Other languages
German (de)
English (en)
Inventor
Viktor Hooge
Martin Zydek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wessel Werk GmbH
Original Assignee
Wessel Werk GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102022126121.2A external-priority patent/DE102022126121A1/de
Application filed by Wessel Werk GmbH filed Critical Wessel Werk GmbH
Publication of EP4309556A1 publication Critical patent/EP4309556A1/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • 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
    • A47L9/0673—Nozzles with fixed, e.g. adjustably fixed brushes or the like with removable brushes, combs, lips or pads
    • 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
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • A47L9/248—Parts, details or accessories of hoses or pipes

Definitions

  • the invention relates to a vacuum cleaner nozzle arrangement
  • a vacuum cleaner nozzle arrangement comprising a basic nozzle which extends in a working direction and a transverse direction perpendicular thereto to form a first suction configuration.
  • the basic nozzle is designed with a base body comprising a suction channel and a suction mouth arranged on the underside of the base body and adjoining the suction channel, which is delimited by a front suction mouth edge and a rear suction mouth edge.
  • the basic nozzle also has a suction connection piece that is fluidly connected to the suction channel.
  • the vacuum cleaner nozzle arrangement comprises an extension nozzle for forming a second suction configuration in connection with the base nozzle, the extension nozzle having a second suction mouth formed on the underside and a receptacle for the base body which is fluidly connected to the second suction mouth.
  • the base body can be reversibly locked on the holder.
  • a locking means that the base body is held immovably on the expansion nozzle. Both the relative position and the relative orientation are fixed.
  • a reversible lock means that it can be released or released by an operator without tools - in particular by force and/or actuation of a control element.
  • the basic nozzle can be connected to the suction line of a suction cleaning device via the suction connection piece.
  • the extension nozzle can be indirectly connected to the suction line through the basic nozzle.
  • Such a suction cleaning device has at least one fan for generating a suction air stream and a dirt separation device for separating dirt particles carried in the suction air stream.
  • the connection between the suction cleaning device and the vacuum cleaner nozzle arrangement according to the invention is provided via a suction line, which can in particular comprise rigid and flexible pipe sections.
  • the suction cleaning device is designed as a household vacuum cleaner, which has a flexible suction hose as the suction line, possibly in combination with a rigid handle and/or a suction tube, which can also be telescopically adjustable in length.
  • the vacuum cleaner nozzle arrangement according to the invention can also be used advantageously in combination with hand-held vacuum cleaners or so-called “stick cleaners”.
  • a designation “front” or “back” refers to the direction of work.
  • “left” and “right” refer to the transverse direction and “top” and “bottom” refer to a vertical direction that is perpendicular to the working direction and the transverse direction.
  • the basic nozzle can be used independently. It is intended to place the underside of the suction mouth against a surface to be cleaned.
  • the basic nozzle is designed as an upholstery nozzle, so that in the first suction configuration, in particular, cleaning of upholstery or other textile materials is made possible.
  • the invention is not limited to such an embodiment.
  • the first suction configuration can also be intended for other applications - including cleaning smooth floors, cleaning jointed surfaces, wet cleaning, etc.
  • the basic nozzle is positioned on the holder of the extension nozzle and locked there.
  • the suction mouth of the basic nozzle is fluidly connected to the receptacle and connected to the second suction mouth of the extension nozzle. While the connection to a suction cleaning device is still provided via the suction connection piece of the basic nozzle, the cleaning properties are now determined by the design of the extension nozzle.
  • a basic nozzle that is specialized for carpet floor operation can be converted to smooth floor operation with an extension nozzle - and vice versa.
  • the basic nozzle and extension nozzle can also be provided for the same purpose, with the extension nozzle covering a different geometry - in particular a larger working width in the transverse direction.
  • Such a system is, for example EP 3 491 988 A1 known.
  • the system disclosed there with a basic nozzle and two extension nozzles that can be used alternatively with the basic nozzle can already cover a wide variety of possible applications. However, the adaptation still needs improvement for some special applications.
  • the invention is based on the object of further adapting the application scenarios of the first suction configuration and the second suction configuration to the corresponding areas of application.
  • the suction connection piece is connected to the base body in a pivotable manner about a tilting axis running in the transverse direction.
  • This mobility allows the vacuum cleaner nozzle arrangement - in the first suction configuration and/or the second suction configuration - to be guided better along the surface to be cleaned. Due to the relative tilting movement between the suction connection piece (which is guided by a user) and the base body, the vacuum cleaner nozzle arrangement can align itself along the surface to be cleaned and thereby better concentrate the suction air flow entering at the suction mouth or the second suction mouth for cleaning purposes.
  • the base nozzle preferably has a coupling pipe piece which is held on the base body so that it can pivot about the tilt axis and is connected to the suction channel on the one hand and to the suction connection piece on the other hand.
  • the connection to the suction channel is preferably designed to be variable in length - ie in particular by a corrugated hose or a telescoping pipe connection.
  • the connection to the suction connection piece is in particular designed such that a tilting movement of the coupling pipe piece is transmitted to the suction connection piece.
  • the suction connection piece is preferably rotatably connected to the coupling pipe piece about an axis of rotation running perpendicular to the transverse direction. This provides a connection of the suction connection piece to the base body and, if necessary, the extension nozzle that can be pivoted in two degrees of freedom. This allows greater freedom in the relative movement or adjustment of the vacuum cleaner nozzle arrangement.
  • the suction connection piece can be angled.
  • the suction connection piece has an inlet section connected to the coupling pipe piece and formed around a first direction, in particular the axis of rotation, and an outlet section for connection to a suction line.
  • the outlet section extends along a second direction, which is angled relative to the first direction by an angle - in particular at least 30° and less than 90°, preferably between 45° and 85°.
  • the inlet section is cylindrical tube-shaped about the first direction, which represents a first axis.
  • the suction connection piece is connected to the base body so that it can rotate about the first axis.
  • the suction connection piece can preferably be connected to it so that it can rotate directly about the first axis.
  • the outlet section is tubular about the second direction, which represents a second axis.
  • the outlet section can be tapered.
  • a locking device is provided - in particular on the base nozzle - which is set up for this purpose to selectively lock or release the tilting movement of the suction connection piece - in particular via the coupling pipe piece - relative to the base body. If the locking device is effective, a pivoting movement of the suction connection piece about the tilt axis running in the transverse direction is restricted or completely prevented. This allows the vacuum cleaner nozzle arrangement according to the invention to be adapted to application scenarios in which either the tilting mobility of the suction connection piece is an advantage or a disadvantage.
  • the locking device is set up to lock the tilting movement in the first suction configuration and to release it in the second suction configuration.
  • the locking device is preferably set up in such a way that in the second suction configuration with the basic nozzle reversibly fixed to the receptacle it is automatically converted into an unlocked state without additional user intervention and is automatically converted into a locked state after the basic nozzle has been separated from the extension nozzle.
  • the locking device has a locking slide which can be displaced radially to the tilting axis and which, in the locked state, engages in an associated recess, in particular a groove.
  • the locking slide can engage in the receptacle radially inwards as well as outwards.
  • the recess is preferably formed on a surface that is rotationally symmetrical about the tilt axis.
  • the locking slide can be guided displaceably on the base body, while the recess is formed on a pivot partner - for example the suction connection piece or the coupling pipe piece - which can be pivoted to the base body about the tilting axis.
  • the locking slide can also be guided on the pivot partner and engage in a receptacle formed on the base body.
  • the locking slide is preferably subjected to force, in particular spring-loaded. This ensures that the locking disk can move automatically in the direction of the receptacle - corresponding to the locked state - or in the opposite direction - corresponding to the unlocked state. The opposite movement must then be caused either by user action or by additional guidance means.
  • the locking slide is subjected to force in the direction of the locked state.
  • the locking slide is moved into the unlocked state in the second suction configuration by guide means arranged on the expansion nozzle, for example release pins arranged in the receptacle.
  • the suction connection piece can be pivoted about the tilt axis between an upper stop and a lower stop.
  • the locking device is in particular set up in such a way that it is effective in a locking position or a locking area, which is influenced by both the upper stop and the lower stop is spaced apart. This makes it possible to set an optimal position or an optimal position range for the first suction configuration or the second suction configuration in the locked state.
  • a sliding sole is preferably formed on the underside of the base body. This sliding surface is formed in front of and/or behind the suction mouth and serves as a contact surface for a textile material.
  • the sliding sole is designed in particular without angular transitions and projections, which could create increased sliding resistance and possibly a risk of damage to textile surfaces.
  • the sliding sole has a front cylinder jacket section formed in front of the front suction mouth edge and a rear cylinder jacket section formed behind the rear suction mouth edge.
  • the front cylinder jacket section is arranged in a first radius around a first axis of symmetry running parallel to the transverse direction and the rear cylinder jacket section is arranged in a second radius around a second axis of symmetry running parallel to the transverse direction.
  • Such sliding surfaces - circular arc-shaped in longitudinal section - can adapt particularly well to a tilting movement of the vacuum cleaner nozzle about an axis running in the transverse direction.
  • the basic nozzle can be tilted either forward onto the front cylinder jacket section or backwards onto the rear cylinder jacket section.
  • the vacuum cleaner nozzle is either tilted about the first axis of symmetry or the second axis of symmetry, whereby the rear suction mouth edge or the front suction mouth edge is correspondingly raised.
  • Such a basic nozzle is particularly good Suitable for cleaning carpets.
  • the suction mouth of the basic nozzle is in maximum sealing contact with the (particularly textile) floor material.
  • This enables particularly intensive deep cleaning.
  • a floor-level suction air flow from the front or rear into the suction mouth can be made possible, which is also suitable for removing coarse dirt particles.
  • This function can be used particularly well when the suction connection piece cannot be moved about the tilting axis running in the transverse direction or can only be moved to a limited extent to a few degrees of angle.
  • This allows control impulses to be transmitted directly to the housing of the basic nozzle by moving the suction connection piece or the suction line connected to it.
  • a combination in which such a tilting movement is restricted or blocked in the first suction configuration is therefore particularly preferred.
  • the first radius is preferably smaller, in particular smaller than half of the second radius, in a first alternative. This results in an asymmetrical tilting behavior in which the front edge of the suction mouth can be raised in fine doses by rolling onto the slightly curved rear cylinder surface.
  • the first radius and the second radius have a size ratio between 2:3 and 3:2, in particular 1:1. It can also preferably be provided that the first axis of symmetry and the second axis of symmetry coincide. The pivoting movement on the front cylinder surface and the rear Cylinder surface can therefore be particularly even and uniform.
  • the front cylinder surface and/or the rear cylinder surface connect tangentially to a support plane in which the front suction mouth edge and the rear suction mouth edge run. Compared to the basic position, rolling forwards or backwards is particularly easy and seamless.
  • the first axis of symmetry or the second axis of symmetry is arranged above the front edge of the suction mouth or the rear edge of the suction mouth in a vertical direction perpendicular to the support plane.
  • At least one overhang is formed on a first side of the receptacle - in particular at the front in the working direction - which the basic nozzle engages behind in the second suction configuration.
  • the positive connection formed by the locking element is designed to be reversible.
  • the locking element is designed to be at least partially deformable and/or displaceable.
  • the locking element can be arranged in particular on the base nozzle and/or the extension nozzle.
  • the locking element particularly preferably engages behind a projection of the other connection partner.
  • a projection is formed on one - preferably rear - side of the base body, which can be engaged behind by a locking element positioned on the expansion nozzle.
  • the latching element has at least one latching hook that is displaceable in a horizontal direction - in particular the transverse direction.
  • the locking hook can be moved between a release position and a locking position by horizontal displacement. In the locking position, the basic nozzle is held positively and/or non-positively within the receptacle. In contrast, the basic nozzle can be removed from the holder in the release position.
  • the locking hook is expediently subjected to force in the direction of the locking position.
  • a return spring can be provided. Without any external influence, the locking hook automatically moves back into the locking position.
  • insertion bevels can be formed on the locking hook or the connecting partner (such as a projection of the basic nozzle or the extension nozzle). This means that when the basic nozzle is inserted into the receptacle, the locking hook is automatically moved into a release position. After the basic nozzle has reached its final position within the holder, the locking hook moves into the locking position.
  • the locking hook can be moved from the locking position to the release position by means of an actuating element.
  • This can in particular be a foot switch on the extension nozzle.
  • the latching element has a plurality of latching hooks, which can be unlocked by a common push rod - in particular actuated by an actuating element.
  • the invention also relates to the previously described basic nozzle viewed on its own. This is preferably intended for use in a vacuum cleaner nozzle arrangement according to the invention.
  • FIGS. 1A and 1B show a perspective view of a vacuum cleaner nozzle arrangement 1 according to the invention, which has a basic nozzle 2 and an extension nozzle 3.
  • the basic nozzle 1 can be as in the Fig. 1B shown in a first suction configuration I can be operated separately from the expansion nozzle 3.
  • a second suction configuration II of the vacuum cleaner nozzle arrangement 1 the basic nozzle 2 and the extension nozzle 3 are connected to form a functional unit - Fig. 1A .
  • the basic nozzle 2 and the extension nozzle 3 of the vacuum cleaner nozzle arrangement 1 each extend in a working direction x and in a transverse direction y perpendicular thereto.
  • the vacuum cleaner nozzle arrangement 1 is intended to be moved back and forth along the working direction x in both the first suction configuration I and the second suction configuration II.
  • the basic nozzle 2 - which determines the dimensions of the vacuum cleaner nozzle arrangement of the first suction configuration I - has a first width b 1 which is at least twice as large as its first length l 1 .
  • the extension nozzle 3 - which determines the dimensions of the vacuum cleaner nozzle arrangement 1 in the second suction configuration II - has a second width b 2 , which is also at least twice as large as its second length l 2 measured in the working direction x.
  • the base nozzle 2 comprises a base body 4 and a suction mouth 5 formed on the underside of the base body 4 - with respect to a vertical direction z perpendicular to the working direction x and the transverse direction y.
  • the suction mouth 5 is formed by a front suction mouth edge 5a in the working direction x and an in the working direction x rear suction mouth edge 5b limited.
  • the two suction mouth edges 5a, 5b are arranged linearly, parallel to the transverse direction y and at the same height with respect to the vertical direction z.
  • the suction mouth 5 connects to a suction channel 6, which is arranged inside the base body 4 and is fluidly connected to a suction connection piece 7.
  • a suction cleaning device By connecting a suction cleaning device to the suction connection piece 7, a negative pressure can be generated in the suction channel 6. This causes a suction air flow which enters through the suction mouth 5 into the suction channel 6 and thus into the interior of the base body 4. From there it is connected to the suction connection piece 7 Handed over to the suction cleaning device and removed.
  • the expansion nozzle 3 has a second suction mouth 8 on the underside. This is surrounded all around by bristle strips 9, which are partially broken through suction openings 9a with shorter bristle lengths.
  • a receptacle 10 is formed on the top side of the expansion nozzle 3, which is fluidly connected to the second suction mouth 8.
  • the receptacle 10 is designed to integrate the base body 4 of the base nozzle 2 and to reversibly lock it therein. By locking the base body 4 in the receptacle 10, the second sow configuration II can be produced.
  • the suction connection piece 7 is connected to the base nozzle 4 so that it can pivot about a tilting axis k running in the transverse direction. This movement is in the 3A to 3C shown. This shows Fig. 3A the pivot position at an upper stop and the Fig. 3B the position at a lower stop.
  • the suction connection piece 7 is angled.
  • the suction connection piece has an inlet region 7a, which is designed concentrically around a first axis s 1 .
  • the inlet section 7a is adjoined by an outlet section 7b, which is designed concentrically about a second axis s 2 .
  • the first axis s 1 and the second axis s 2 are angled relative to one another at an angle ⁇ of approximately 85°.
  • the tilting mobility of the suction connection piece 7 about the tilting axis k is controlled by a coupling pipe piece 11 provided, which is held on the base body 4 so as to be pivotable about the tilt axis k.
  • the coupling pipe section 11 telescopes into a dome 4a of the base body, which also connects the coupling pipe section 11 to the suction channel 6.
  • connection between the suction connection piece 7 and the coupling pipe piece 11 is designed such that the suction connection piece 7 is rotatable about the first axis s 1 .
  • This allows the suction connection piece 7 to be pivoted about one or two axes relative to the base body 4 - depending on the operating state.
  • the vacuum cleaner nozzle arrangement 1 can be maneuvered particularly easily on a floor surface.
  • a groove 11a is formed on the outside of the coupling pipe piece 11.
  • a locking slide 12 is formed on the dome 4a of the base body 4, which is displaceable on the base body 4 in the vertical direction z and radially to the tilting axis k and is subjected to downward force by tension springs 13 arranged on both sides of the coupling pipe piece 11.
  • the shape of the locking slide 12, which spans the coupling pipe piece 11 in an arc, and the groove 11a are adapted to one another in such a way that they are in one Fig. 3C locking position shown interlock.
  • the tilting movement of the coupling pipe piece 11 - and thus indirectly of the suction connection piece 7 - is thereby prevented or blocked.
  • the suction connection piece 7 between an upper stop ( Fig. 3A ) and a lower stop ( Fig. 3B ) pivotable.
  • the second axis s 2 of the outlet section 7b (with an outlet section 7b rotated maximally upwards about the axis of rotation s 1 ) closes a maximum tilt angle ⁇ of approx . 80°.
  • the tilt angle ⁇ is approx. 35°.
  • the groove 11a and the locking slide 12 are arranged such that the locking takes place at a tilt angle ⁇ of approximately 60° to 65°.
  • the locking device with the locking slide 12 in cooperation with the tension springs 13 and the groove 11a is designed such that it automatically locks in the first suction configuration I and releases it in the second suction configuration II.
  • release pins 14 aligned in the vertical direction z are formed in the receptacle 10 of the expansion nozzle 3. These correspond to assigned pin receptacles 15 on the underside of the base body 4, as in particular in the Fig. 2 is recognizable.
  • the extension nozzle 3 is equipped with a receptacle 10, which - corresponding to the outline of the basic body 4 of the basic nozzle 2 - has a substantially rectangular basic shape.
  • a receptacle 10 On the front of the receptacle 10, two projections 10a are formed, which protrude backwards into the receptacle 10.
  • the base body 4 engages behind the projections 10a.
  • two front-side receptacles 4a are formed on the base body 4.
  • the top sides of the base body 4 and the extension nozzle 3 are flush with one another.
  • the base body 4 has two locking projections 4b at its rear end. These are designed to be slanted on their underside.
  • two locking hooks 16 which are displaceable in the transverse direction y and which are beveled on their upper side are formed on the expansion nozzle 3. Both locking hooks 16 are mechanically coupled to a foot switch 18 via a common push rod 17.
  • the foot switch 18 is actuated. As a result, the locking hooks 16 are displaced by the push rod 17 against the return spring 19. This eliminates the form fit and the basic nozzle 2 is released. Since the locking slide 12 rests spring-loaded on the pins 15, the basic nozzle 2 is automatically raised from the locking position.
  • a sliding sole 20 is formed on the underside of the base body 4. This is set up so that the base body 4 of the base nozzle 2 can rest on a textile carpet material.
  • the sliding sole 20 has a first cylinder jacket section 20a in front of the front suction mouth edge 5a, which is arranged in a first radius r 1 around a first axis of symmetry a 1 running in the transverse direction y.
  • a rear cylinder jacket section 20b is arranged in a second radius r 2 about a second axis of symmetry a 2 .
  • the front cylinder jacket section 20a and the rear cylinder jacket section 20b each connect tangentially to the horizontal plane H, within which the front suction mouth edge 5a and the rear suction mouth edge 5b run.
  • the base body 4 can be tilted seamlessly forwards and backwards. In the context of the illustrated embodiment, this is simplified in that the tilting movement in the first suction configuration I - which is intended for direct ground contact of the base nozzle 2 - is blocked.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
EP23186713.6A 2022-07-22 2023-07-20 Ensemble de buse d'aspirateur Pending EP4309556A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022118415 2022-07-22
DE102022126121.2A DE102022126121A1 (de) 2022-07-22 2022-10-10 Staubsaugerdüsenanordnung

Publications (1)

Publication Number Publication Date
EP4309556A1 true EP4309556A1 (fr) 2024-01-24

Family

ID=87429734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23186713.6A Pending EP4309556A1 (fr) 2022-07-22 2023-07-20 Ensemble de buse d'aspirateur

Country Status (1)

Country Link
EP (1) EP4309556A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57202860U (fr) * 1981-06-19 1982-12-24
US7131164B2 (en) * 2002-05-22 2006-11-07 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner and suction nozzle employed therein
JP2008188375A (ja) * 2007-02-08 2008-08-21 Matsushita Electric Ind Co Ltd 電気掃除機用吸込具、及びこれを用いた電気掃除機
DE102010030731A1 (de) * 2010-06-30 2012-01-05 BSH Bosch und Siemens Hausgeräte GmbH Staubsaugerdüse
EP3491988A1 (fr) 2017-11-30 2019-06-05 Wessel-Werk GmbH Buse clic
DE102018107424A1 (de) * 2018-03-28 2019-10-02 Wessel-Werk Gmbh Staubsaugerbodendüsenaufsatz, Staubsaugerbodendüsenanordnung und Haushaltsstaubsaugeranordnung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57202860U (fr) * 1981-06-19 1982-12-24
US7131164B2 (en) * 2002-05-22 2006-11-07 Matsushita Electric Industrial Co., Ltd. Vacuum cleaner and suction nozzle employed therein
JP2008188375A (ja) * 2007-02-08 2008-08-21 Matsushita Electric Ind Co Ltd 電気掃除機用吸込具、及びこれを用いた電気掃除機
DE102010030731A1 (de) * 2010-06-30 2012-01-05 BSH Bosch und Siemens Hausgeräte GmbH Staubsaugerdüse
EP3491988A1 (fr) 2017-11-30 2019-06-05 Wessel-Werk GmbH Buse clic
DE102018107424A1 (de) * 2018-03-28 2019-10-02 Wessel-Werk Gmbh Staubsaugerbodendüsenaufsatz, Staubsaugerbodendüsenanordnung und Haushaltsstaubsaugeranordnung

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