EP4311463A1 - Saugdüse und staubsauger mit einer saugdüse - Google Patents

Saugdüse und staubsauger mit einer saugdüse Download PDF

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Publication number
EP4311463A1
EP4311463A1 EP22186933.2A EP22186933A EP4311463A1 EP 4311463 A1 EP4311463 A1 EP 4311463A1 EP 22186933 A EP22186933 A EP 22186933A EP 4311463 A1 EP4311463 A1 EP 4311463A1
Authority
EP
European Patent Office
Prior art keywords
suction nozzle
slope
protrusions
distance
virtual surface
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
EP22186933.2A
Other languages
English (en)
French (fr)
Inventor
Junjun ZHU
Yifan Wu
Zhiqing Zhu
An TANG
Lianchao SHANG
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.)
Nilfisk AS
Original Assignee
Nilfisk AS
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
Application filed by Nilfisk AS filed Critical Nilfisk AS
Priority to EP22186933.2A priority Critical patent/EP4311463A1/de
Priority to CN202321901173.1U priority patent/CN220800893U/zh
Publication of EP4311463A1 publication Critical patent/EP4311463A1/de
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
    • 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
    • A47L9/0072—Mechanical means for controlling the suction or for effecting pulsating action
    • 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
    • A47L9/04—Nozzles with driven brushes or agitators
    • A47L9/0494—Height adjustment of dust-loosening tools

Definitions

  • the present invention relates to the technical field of cleaning, more specifically to a suction nozzle and a vacuum cleaner comprising a suction nozzle.
  • the suction nozzle of a vacuum cleaner could slide on a surface to be cleaned, for example on a floor, and to suck dirt (e.g. dust and debris).
  • an improved suction nozzle and a vacuum cleaner having such an improved suction nozzle would be advantageous, and in particular a more energy efficient and/or easily operated nozzle would be advantageous.
  • the invention provides a suction nozzle, the suction nozzle comprising a bottom part and a distance adjustment device, the bottom part being configured to face a surface to be cleaned, the bottom part comprising a suction mouth, a first bottom face and a second bottom face, the first bottom and the second bottom face being configured at two sides of the suction mouth relatively, the distance adjustment device being connected to the bottom part, and the position of the distance adjustment device relative to the bottom part being adjustable so that the distance from the suction mouth and the surface to be cleaned being adjustable, wherein:
  • the invention is particularly, but not exclusively, advantageous for obtaining a good cleaning effect, as well as reducing the operation force of a user and saving energy. Also, the structure of protrusion, as well as its matching with the first slope and the second slope could easily guide dirt into suction mouth.
  • the distance from the part of the protrusions furthest away from the first slope to the first slope is between 0 and 2 mm
  • the distance from the part of the protrusions furthest away from the second slope to the second slope is between 0 and 2 mm
  • the distance from the part of the protrusions furthest away from the first slope to the first slope is between 0.5 and 1 mm
  • the distance from the part of the protrusions furthest away from the second slope to the second slope is between 0.5 and 1 mm.
  • the distance between the protrusions and the virtual surface is between 0.5 mm and 4 mm.
  • the distance adjustment device in a case when the suction nozzle is used to clean a hard surface, the distance adjustment device being at a first position, the distance between the protrusions and the virtual surface is between 0.5 mm and 3 mm, or more optimally, the distance between the protrusions and the virtual surface is between 1.5 mm and 2 mm, and wherein in a case when the suction nozzle is used to clean carpet, the distance adjustment device being at a second position, the distance between the protrusions and the virtual surface is between 1.5 mm and 4 mm, or more optimally, the distance between the protrusions and the virtual surface is between 2 mm and 3.5 mm.
  • the surface of the protrusions facing the virtual surface is parallel to the virtual surface.
  • the first bottom face further comprises a flat area adjacent to the first slope, the flat area being farther away from the suction mouth than the first slope, the flat area being configured with no said protrusions.
  • the distance between the flat area and the virtual surface is between 3 mm and 20 mm, or more optimally, the distance between the flat area and the virtual surface is between 5 mm and 15 mm.
  • the width of the guide channel is no less than 5mm, or more optimally, wherein at the position of the suction mouth, the width of the guide channel is between 5 mm and 20 mm.
  • the distance adjustment device is configured with at least one extension, the bottom part forming an opening, the extension partly passing through the opening and being used for getting contact with the virtual surface.
  • the extension especially the extension with the shape of wheel, which is used for contacting the surface to be contacted, defines a gap between the surface to be cleaned and the first bottom face/the second bottom face. Thereby it is obtained that dirt will not easily get stuck with the suction nozzle.
  • the bottom part at one side of the extension facing away from the suction mouth forms a second protrusion protruding the first bottom face or the second bottom face, the second protrusion being formed with one or more guide surfaces configured to lead objects away from the extension.
  • part of the second protrusion extends to a side of the extension closer to the suction mouth, at the side of the extension closer to the suction mouth being formed with a concave part partly surrounded by the second protrusion, the concave part being interconnected with the suction mouth.
  • the concave part is flared, or in other words, the concave part is larger at one end than the other, the closer the position to the suction mouth, the smaller the width of the concave part is getting.
  • first slope and the virtual surface forms a first angle
  • second slope and the virtual surface forms a second angle
  • the first slope being at the forward direction of the suction nozzle
  • the second slope being at the backward direction of the suction nozzle
  • the first angle being larger than or equal to the second angle
  • the first angle is between 15° and 45°, or more optimally, the first angle is between 15° and 30°, and the second angle is between 5° and 45°, or more optimally, the second angle is between 5° and 30°.
  • the invention provides a vacuum cleaner which comprises the suction nozzle according to the first aspect of the invention.
  • the term "virtual surface” is meant to denote an ideal flat surface in relation to which distances of the parts of the suction nozzle are described.
  • a surface to be cleaned for example a floor surface
  • Such uneven surface may not be precise as a base plane when measuring the distances of the parts of the suction nozzle.
  • the virtual surface and the ideal flat floor surface would coincide.
  • FIGS. 1 to 6 An exemplary embodiment of a suction nozzle 100 according to the invention, which is shown in FIGS. 1 to 6 .
  • the suction nozzle 100 in this embodiment could be connected to a main body of a vacuum machine, to suck dirt into the vacuum machine.
  • the suction nozzle 100 comprises a bottom part B and a distance adjustment device D.
  • the bottom part B has a bottom face which is configured to face a surface to be cleaned (e.g. a floor). In approximately the middle of the bottom face forms a suction mouth 10. Dirt on the surface to be cleaned, or in other words dirt to be cleaned, for example dust or debris, could be sucked through suction mouth 10.
  • the distance adjustment device D is movably connected to the bottom part B. So that according to various surfaces to be cleaned with different properties, the distance L1 between bottom part B and the surface to be cleaned could be adjusted.
  • the bottom part B has a box shape.
  • the distance adjustment device D is partly contained inside the bottom part B. And in a direction facing the surface to be cleaned, the distance adjustment device D partly extends out of the bottom part B, and forms an extension W.
  • the extension W is a group of wheels.
  • the wheels are rotatable to the main body of the distance adjustment device D, helping the suction nozzle 100 easily move on the surface to be cleaned.
  • the extension W could also be one or more balls, or bristles, or a combination of the above features.
  • the extension W is used to directly contact the surface to be cleaned, which could space out the bottom part B and the surface to be cleaned.
  • a spring is set between the distance adjustment device D and the bottom part B, which is not shown in the figures.
  • the distance adjustment device D touches a button T on its upper part. And the button T has two working positions.
  • the distance L1 that the extension W extending out of the bottom part B is relatively small.
  • the distance L1 is 0.5 mm to 3 mm, or preferably 1.5 mm to 2 mm.
  • the distance adjustment device D is in its first position. This situation is particularly used for a hard surface to be cleaned, for example a floor.
  • the distance L1 that the extension W extending out of the bottom part B is relatively large.
  • the distance L1 is 1.5 mm to 4 mm, or preferably 2 mm to 3.5 mm.
  • the distance adjustment device D is in its second position. This situation is particularly used for a soft surface to be cleaned, for example a carpet.
  • first bottom face 11 At both sides (front side F and rear side R) of the bottom part B on the bottom part B forms a first bottom face 11 and a second bottom face 12.
  • Part of the first bottom face 11 forms a first slope 111
  • part of the second bottom face 12 forms a second slope 121.
  • Both the first slope 111 and the second slope 121 is inclined to a flat surface to be cleaned; or a following definition is made: the contacting points between the suction nozzle 100 and the surface to be cleaned, in other words the contact points of the multi extensions W and the surface to be cleaned, altogether define a virtual surface VS, so the first slope 111 and the second slope 121 are both inclined to the virtual surface VS.
  • the inclined directions of the first slope 111 and the second slope 121 are opposite. Along the front and rear direction in the figures, the closer to the suction mouth 10, the first slope 111 or the second slope 121 is closer to the virtual surface VS.
  • a first angle ⁇ is formed between the first slope 111 and the virtual surface VS.
  • a second angle ⁇ is formed between the second slope 121 and the virtual surface VS. More preferably, the first angle ⁇ is larger or equals to the second angle ⁇ . Since in a regular operation mode, the first slope 111 is at the forward direction of the suction nozzle 100, and the second slope 121 is at the backward direction of the suction nozzle 100. When a user moves the suction nozzle 100 in a forward direction, the user push the suction nozzle 100; and when a user moves the suction nozzle 100 in a backward direction, the user pull the suction nozzle 100. In a pull operation, the suction nozzle 100 tends to get close to the surface to be cleaned; while in a push operation, the suction nozzle 100 tends to be lifted and get far away from the surface to be cleaned.
  • the first angle ⁇ is between 15° to 45° , or more preferably, the first angle ⁇ is between 15° to 30° .
  • the second angle ⁇ is between 5° to 45° , or more preferably, the second angle ⁇ is between 5° to 30° .
  • the first slope 111 and the second slope 121 both partly protrude toward the virtual surface VS to form a plurality of protrusions 21 and protrusions 22 respectively. Between two adjacent protrusions 21 (or between two adjacent protrusions 22) forms a guide channel.
  • protrusions 21 (22) reduce the distance between the bottom part B and the surface to be cleaned, leading a larger vacuum pressure in the relevant areas; on the other hand, guide channels 30 could avoid the vacuum pressure going too large, leading a smoother movement of the suction nozzle 100 on the surface to be cleaned.
  • guide channels 30 could also guide dirt into the suction mouth 10 during the suction process.
  • the protrusion 21 (22) has a proximately triangle shape, and the guide channel 30 has a flared shape.
  • the width for the guide channel 30 is no less than 5 mm, or in other words, the distance between two adjacent protrusions 21 (or the distance between two adjacent protrusions 22) is no less than 5 mm.
  • the guide channel 30 has a smallest width d1, which is 5 mm-20 mm.
  • the protrusions 21 (22) extend to the edge of the suction mouth 10, or in other words, the protrusions 21 (22) connect with the edge of the suction mouth 10.
  • the protrusions 21 are higher than the first slope 111
  • the protrusions 22 are higher than the second slope 121.
  • the distance L21 (or the distance L22) of the higher part is 0-2 mm, or preferably, the distance L21 (or the distance L22) is 0.5 mm-1 mm.
  • the distance L21 from the part of the protrusions 21 furthest away from the first slope 111 to the first slope 111 is between 0.5 and 1 mm
  • the distance L22 from the part of the protrusions 22 furthest away from the second slope 121 to the second slope 121 is between 0.5 and 1 mm.
  • the existence of distance L21 and distance L22 means that the guide channels 30 at the position of suction mouth 10 have a clear structure, which is good for guiding dirt into suction mouth 10.
  • the first bottom face 11 also comprises a flat area 112.
  • the protrusions 21 do not extend to the flat area 112, or in other words, in the flat area, no protrusions 21 are formed.
  • the flat area 112 is adjacent to the first slope 111, and the flat area 112 locates at the edge of the bottom part B, or in other words, the flat area 112 is further away from the suction mouth 10 than the first slope 111.
  • the flat area 112 is parallel to the virtual surface VS.
  • the flat area 112 has a bigger distance to the surface to be cleaned when compared to the first slope 111, which allows dirt, especially dirt of big size, to easily go underneath the bottom part B, leading to a better cleaning performance.
  • the distance L3 between the flat area 112 and the virtual surface VS is 3 mm-20 mm, or more preferably, the distance L3 is 5 mm-15 mm.
  • the bottom part B is configured with one or more openings P, which allow the extension W to go through.
  • the bottom part B comprises four openings P, located at four corners of the bottom part B separately.
  • the bottom part B is configured to form a second protrusion 40.
  • the height of the second protrusion 40 is the same as the height of the protrusion 21 (22).
  • Each second protrusion 40 comprises an outer protrusion 41 and an inner protrusion 42.
  • the outer protrusion 41 locates at the side of the opening P back to the suction mouth 10.
  • the outer protrusion 41 is configured with a guiding face which could guide dirt away from the opening P.
  • viewing along the direction perpendicular to the virtual surface VS, the outer protrusion 41 has an approximately triangle shape. The two surfaces where the two sides of the triangle locate form two guiding faces, leading to a difficult way for dirt getting close to the extension W extending the opening P. So, extensions W are not easily wrapped with hair, or not easily blocked with dust.
  • the rest of the second protrusion 40 is configured as the inner protrusion 42, which is connected with the outer protrusion 41 and extends to the suction mouth 10.
  • the inner protrusion 42 partly surround the opening P, to protect the extension W inside the opening P.
  • the bottom part B is configured to form a concave part 50.
  • the surface of the concave part 50 locates at approximately the same surface as the first slope 111 or the second slope 121 outside of the inner protrusion 42.
  • the concave part 50 is interconnected with the suction mouth 10, allowing the dirt that temporary sticked on the extension W to go into the suction mouth 10 via the concave part 50.
  • the concave part 50 has a flared shape.
  • the closer to the suction mouth 10 the smaller width the concave part 50 is, which enhancing the guiding dirt function of the concave part 50.
  • the present invention also provide a vacuum cleaner comprising the suction nozzle 100 described above.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
EP22186933.2A 2022-07-26 2022-07-26 Saugdüse und staubsauger mit einer saugdüse Pending EP4311463A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22186933.2A EP4311463A1 (de) 2022-07-26 2022-07-26 Saugdüse und staubsauger mit einer saugdüse
CN202321901173.1U CN220800893U (zh) 2022-07-26 2023-07-19 吸嘴和具有该吸嘴的吸尘器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22186933.2A EP4311463A1 (de) 2022-07-26 2022-07-26 Saugdüse und staubsauger mit einer saugdüse

Publications (1)

Publication Number Publication Date
EP4311463A1 true EP4311463A1 (de) 2024-01-31

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ID=82742595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22186933.2A Pending EP4311463A1 (de) 2022-07-26 2022-07-26 Saugdüse und staubsauger mit einer saugdüse

Country Status (2)

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EP (1) EP4311463A1 (de)
CN (1) CN220800893U (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885715A (en) * 1955-06-30 1959-05-12 Electrolux Corp Adjustable area restricting members for suction nozzles
WO1996037142A1 (en) * 1995-05-21 1996-11-28 Edlund Goeran Cleaning tool of a vacuum cleaner
JP2006346279A (ja) * 2005-06-17 2006-12-28 Toshiba Tec Corp 電気掃除機およびその吸込口体
EP2687139A2 (de) * 2012-07-19 2014-01-22 Wessel-Werk GmbH Staubsauger-Bodendüse
WO2018036603A1 (de) * 2016-08-22 2018-03-01 Alfred Kärcher Gmbh & Co. Kg Bodendüse für einen staubsauger, verfahren zum absaugen von textilflächen und staubsauger
WO2018224127A1 (de) * 2017-06-06 2018-12-13 Alfred Kärcher SE & Co. KG Bodendüsenvorrichtung, reinigungswalze für eine textilflächen-reinigung und saugmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2885715A (en) * 1955-06-30 1959-05-12 Electrolux Corp Adjustable area restricting members for suction nozzles
WO1996037142A1 (en) * 1995-05-21 1996-11-28 Edlund Goeran Cleaning tool of a vacuum cleaner
JP2006346279A (ja) * 2005-06-17 2006-12-28 Toshiba Tec Corp 電気掃除機およびその吸込口体
EP2687139A2 (de) * 2012-07-19 2014-01-22 Wessel-Werk GmbH Staubsauger-Bodendüse
WO2018036603A1 (de) * 2016-08-22 2018-03-01 Alfred Kärcher Gmbh & Co. Kg Bodendüse für einen staubsauger, verfahren zum absaugen von textilflächen und staubsauger
WO2018224127A1 (de) * 2017-06-06 2018-12-13 Alfred Kärcher SE & Co. KG Bodendüsenvorrichtung, reinigungswalze für eine textilflächen-reinigung und saugmaschine

Also Published As

Publication number Publication date
CN220800893U (zh) 2024-04-19

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