EP2248455B1 - Bodenreinigungsmaschine - Google Patents

Bodenreinigungsmaschine Download PDF

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Publication number
EP2248455B1
EP2248455B1 EP09006278A EP09006278A EP2248455B1 EP 2248455 B1 EP2248455 B1 EP 2248455B1 EP 09006278 A EP09006278 A EP 09006278A EP 09006278 A EP09006278 A EP 09006278A EP 2248455 B1 EP2248455 B1 EP 2248455B1
Authority
EP
European Patent Office
Prior art keywords
cleaning machine
floor cleaning
elongated element
machine according
squeegee
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.)
Not-in-force
Application number
EP09006278A
Other languages
English (en)
French (fr)
Other versions
EP2248455A1 (de
Inventor
Michele Liscio
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.)
Wetrok AG
Original Assignee
Wetrok AG
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 Wetrok AG filed Critical Wetrok AG
Priority to EP09006278A priority Critical patent/EP2248455B1/de
Priority to AT09006278T priority patent/ATE555709T1/de
Priority to DK09006278.7T priority patent/DK2248455T3/da
Publication of EP2248455A1 publication Critical patent/EP2248455A1/de
Application granted granted Critical
Publication of EP2248455B1 publication Critical patent/EP2248455B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • A47L11/305—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools the tools being disc brushes
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4061—Steering means; Means for avoiding obstacles; Details related to the place where the driver is accommodated
    • 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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4063—Driving means; Transmission means therefor
    • A47L11/4069—Driving or transmission means for the cleaning tools

Definitions

  • the present invention relates to a floor cleaning machine, preferably for industrial field.
  • the present floor cleaning machine is of the type comprising a brush that is drivable via a substantially vertical shaft to rotate and a squeegee that is arrange to the rear of such a brush, opposite to the travel direction of the floor cleaning machine.
  • a kind of flooring machine that can be moved by an operator or preferably provided with independent drive, comprises means for rotating the squeegee around the brush as a consequence of directional changes of the machine.
  • the squeegee which is a strip or blade of elastic material such as, rubber or the like, collects the washing liquid and the dirt removed by the action of the brush, being provided with suction means to suction the dirt and the washing liquid in order to leave the floor clear and dry.
  • a typical floor cleaning machine is shown in EP 15 95 487 A1 .
  • the aim of the present invention therefore, is to provide a floor cleaning machine that can be quickly assembled and disassembled.
  • Further object of the present invention is to provide a floor cleaning machine that is provided with rotating means that can be manufactured just in one piece and, at same time, provided with reduced inertial moment.
  • the present floor cleaning machine that comprises at least one brush that is drivable via a substantially vertical shaft to rotate, at least one squeegee that is arranged to the rear of said at least one brush, opposite to the travel direction of said floor cleaning machine, and means for rotating said at least one squeegee, at least in part, around said at least one brush, characterized in that said rotating means comprise an elongated element that is provided with a first portion, rotatably freely coupled to said vertical shaft, and a second portion, coupled directly, or indirectly, to said at least one squeegee.
  • said rotating means comprise an elongated element that is provided with a first portion, rotatably freely coupled to said vertical shaft, and a second portion, coupled directly, or indirectly, to said at least one squeegee.
  • said elongated element is arranged horizontally and is substantially flat; besides said first portion is provided with a hole that is concentric to said vertical shaft so that the elongated element can be manufactured just in one piece. It should be remarked that substantially flat means that the thickness of said elongated element has dimensions negligible with respect to the other two spatial dimensions. Therefore said elongated element is similar to a thin and narrow plate that rotates around an axis perpendicular to the two base surfaces of the plate.
  • said rotating means comprise a connecting element that is provided with a first end rotatably freely coupled around a first horizontal axis to the second portion of said elongated element, and a second end freely rotatably coupled about a second horizontal axis to said at least one squeegee.
  • the squeegee can be moved up and down by the operator or automatically adjusts in case the floor is not perfectly smooth.
  • both first and second embodiment of said floor cleaning machine comprise means for reducing the friction between said horizontal elongated element and said vertical shaft, at least during their relative rotation.
  • Said friction reducing means are arranged into the inner portion of said hole and comprise a bushing or a ball bearing which are preferable formed in one piece with said hole.
  • said friction reducing means comprise a plurality of spherical balls that roll on the external surface of said shaft, along a track for said plurality of balls.
  • Each ball being is radially arranged into the inner portion of said hole and housed in a cavity of said inner portion.
  • the first portion of said horizontal elongated element is substantially circular and the second portion of said horizontal elongated element is substantially rectangular, wherein the ratio of the transversal dimensions of the first portion of said horizontal elongated element to the transversal dimensions of the second portion of said elongated element is comprised between 1 and 5, preferably 4.
  • the floor cleaning machine_ 1 comprises a chassis 100 that supports a brush 2 that is drivable by means of an electrical motor 200 via a substantially vertical shaft 3 to rotate, a squeegee 4 that is arranged to the rear of said brush 2, opposite to the travel direction of said floor cleaning machine 1, and means 5 for rotating said at least one squeegee 4, at least in part, around said a brush 2.
  • the brush 2 is protected by on housing 70 that completely surrounds and in operation is integral with the brush during its rotation.
  • the floor cleaning machine 1 can also comprise more than one brush without falling out from the scope of protection of the present invention.
  • the above mentioned rotating means 5 comprise an elongated element 6 that is provided with a first portion 6a, rotatably freely coupled to said vertical shaft 3, and a second portion 6b, directly coupled to said squeegee.
  • said elongated element 6 is arranged horizontal, i.e. parallel to the floor 300 to be cleaned, and it is substantially flat. Therefore said elongated element 6 is shaped as a plate, i.e. it is provided with a thickness that has dimensions negligible with respect to the other two dimensions, which rotates around an axis perpendicular to the two base surfaces 6e, 6f ( figure 6 ) of the elongated element 6.
  • Such a configuration of the elongated element 6 is particularly advantageous as the inertial momentum is extremely low and the elongated element can be manufactured very quickly. Furthermore such a configuration allows the elongated element to be lightly and elastically bent in case the machine 1 slides on a floor 300 which is not perfectly smooth. In practise, the flattened shape of the elongated element, consequently its capacity of lightly bending, allows the squeegee to adapt to the different surfaces of the floor without any rotational coupling between the squeegee and the elongated element.
  • first portion 6a of said elongated element 6 is provided with a hole 6c that is concentric to said vertical shaft 3. Said hole 6c can be obtained during the same operation for manufacturing the elongated element thus reducing costs and saving money.
  • said elongated element 6 freely rotates around the shaft 3 during the functioning of the machine 1.
  • a rotation of the elongated element 6 occurs when the apparatus changes its direction, due to the friction caused by the sliding of the squeegee 4 on the floor 300, so as to follow the machine in every directional change and avoid some regions of the floor not to be dried by the squeegee 4.
  • figures 4a and 4b show two different angular positions of the squeegee with respect to the brush as consequences of the rotation of the elongated element 6 about the shaft 3.
  • said rotating means 5 comprise a connecting element 9 that is provided with a first end 9a rotatably freely coupled around a first horizontal axis X to the second portion 6b of said elongated element 6, and a second end 9b freely rotatably coupled about a second horizontal axis Y to said at least one squeegee 4.
  • Said connecting element 9 comprises two different rods 60, 61 that pivot about two hinges 30, 31 connected to the end 50 of the second portion 6b of said elongated element 6. In such a case said elongated element 6 is coupled indirectly to said squeegee 4.
  • the second embodiment allows the squeegee 4 to be moved up and down during any working condition of the machine 1 or to automatically adjust in case the floor is not perfectly smooth.
  • said machine 1 comprises means 10 for reducing the friction between said horizontal elongated element 6 and said vertical shaft 3, at least during their relative rotation.
  • Said friction reducing means 10 are arranged into the inner portion 6d of said hole 6c and they can be chosen between a bushing or a ball bearing (both alternatives not shown), which can be separated from the hole 6 or formed in one piece with said hole 6.
  • said friction reducing means 10 comprise a plurality 14 of spherical balls 14a that roll on the external surface 18 of said shaft 3.
  • each ball 14a is radially arranged into the inner portion 6d of said hole 6c and housed in a cavity 16 of said inner portion 6d.
  • said shaft 3 comprises a track 17 for said plurality 14 of balls.
  • said first portion 6a of said elongated element 6 is substantially circular and the second portion 6b of said horizontal elongated element 6 is substantially rectangular.
  • the applicant has advantageously found out that the ratio of the transversal dimensions D of the first portion 6a of said horizontal elongated element 6 to the transversal dimensions L of the second portion 6b of said elongated element has to be comprised between 1 and 5, preferably 4, in order to obtain the most efficient rotation of said rotating means 5 around the shaft 3.

Landscapes

  • Brushes (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Pinball Game Machines (AREA)

Claims (13)

  1. Bodenreinigungsmaschine (1), umfassend wenigstens eine Bürste (2), die über eine im Wesentlichen vertikale Welle (3) angetrieben werden kann, um sich zu drehen, wenigstens einen Wischer (4), der an der Rückseite der wenigstens einen Bürste (2) entgegengesetzt zur Bewegungsrichtung der Bodenreinigungsmaschine (1) angeordnet ist, sowie Mittel (5) zum Drehen des wenigstens einen Wischers (4) zumindest teilweise um die wenigstens eine Bürste (2), dadurch gekennzeichnet, dass die Mittel zum Drehen (5) ein längliches Element (6) umfassen, das mit einem ersten Teil (6a) versehen ist, der frei drehbar mit der vertikalen Welle (3) verbunden ist, und einem zweiten Teil (6b), der direkt oder indirekt mit dem wenigstens einen Wischer (4) verbunden ist.
  2. Bodenreinigungsmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das längliche Elementes (6) horizontal angeordnet und im Wesentlichen flach ist.
  3. Bodenreinigungsmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der erste Teil (6a) des länglichen Elements (6) mit einer Bohrung (6c) versehen ist, die konzentrisch zur vertikalen Welle (3) ist.
  4. Bodenreinigungsmaschine nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel zum Drehen (5) ein Verbindungselement (9) umfassen, das mit einem ersten Ende (9a) versehen ist, das frei drehbar um eine erste horizontale Achse (X) mit dem zweiten Teil (6b) des länglichen Elements (6) verbunden ist, und einem zweiten Ende (9b), das frei drehbar um eine zweite horizontale Achse (Y) mit dem wenigstens einen Wischer (4) verbunden ist.
  5. Bodenreinigungsmaschine nach einem oder mehreren der vorstehenden Ansprüche, dadurch gekennzeichnet, dass sie Mittel (10) zur Verminderung der Reibung zwischen dem horizontalen länglichen Element (6) und der vertikalen Welle (3) zumindest während ihrer relativen Drehung umfasst, wobei die reibungsvermindernden Mittel (10) im inneren Teil (6d) der Bohrung (6c) angeordnet sind.
  6. Bodenreinigungsmaschine nach Anspruch 5, dadurch gekennzeichnet, dass die Mittel (10) zur Verminderung der Reibung eine Buchse umfassen.
  7. Bodenreinigungsmaschine nach Anspruch 5, dadurch gekennzeichnet, dass die Mittel (10) zur Verminderung der Reibung ein Kugellager umfassen.
  8. Bodenreinigungsmaschine nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Mittel (10) zur Verminderung der Reibung einstückig mit der Bohrung (6) ausgeführt sind.
  9. Bodenreinigungsmaschine nach Anspruch 5, dadurch gekennzeichnet, dass die Mittel (10) zur Verminderung der Reibung mehrere (14) Kugeln umfassen, die auf der Außenfläche (18) der Welle (3) laufen, wobei die Kugeln (14) jeweils radial im inneren Teil (6d) der Bohrung (6d) angeordnet und in einem Hohlraum (16) des inneren Teils (6c) untergebracht sind.
  10. Bodenreinigungsmaschine nach Anspruch 9, dadurch gekennzeichnet, dass die Welle (3) eine Laufbahn (17) für die mehreren Kugeln umfasst.
  11. Bodenreinigungsmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass sie einen elektrischen Motor (5) umfasst, um die vertikale Welle (3) in Drehung zu versetzen.
  12. Bodenreinigungsmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der erste Teil (6a) des länglichen Elements (6) im Wesentlichen kreisförmig ist und der zweite Teil (6b) des horizontalen länglichen Elementes (6) im Wesentlichen rechteckig ist.
  13. Bodenreinigungsmaschine nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Verhältnis der Querabmessungen D des ersten Teils (6a) des horizontalen länglichen Elements (6) zu den Querabmessungen des zweiten Teils (6b) L des länglichen Elements zwischen 1 und 5 liegt.
EP09006278A 2009-05-08 2009-05-08 Bodenreinigungsmaschine Not-in-force EP2248455B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09006278A EP2248455B1 (de) 2009-05-08 2009-05-08 Bodenreinigungsmaschine
AT09006278T ATE555709T1 (de) 2009-05-08 2009-05-08 Bodenreinigungsmaschine
DK09006278.7T DK2248455T3 (da) 2009-05-08 2009-05-08 Gulvrengøringsmaskine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09006278A EP2248455B1 (de) 2009-05-08 2009-05-08 Bodenreinigungsmaschine

Publications (2)

Publication Number Publication Date
EP2248455A1 EP2248455A1 (de) 2010-11-10
EP2248455B1 true EP2248455B1 (de) 2012-05-02

Family

ID=41136698

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09006278A Not-in-force EP2248455B1 (de) 2009-05-08 2009-05-08 Bodenreinigungsmaschine

Country Status (3)

Country Link
EP (1) EP2248455B1 (de)
AT (1) ATE555709T1 (de)
DK (1) DK2248455T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10092158B2 (en) 2015-05-22 2018-10-09 Tennant Company Surface maintenance machine with a quick alignment mechanism for a cleaning tool

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1402341B1 (it) * 2010-10-12 2013-08-30 Nilfisk Advance S P A Macchina lava-asciuga pavimenti con tergitore orientabile automaticamente.
CN102835938A (zh) * 2011-06-24 2012-12-26 广东白云清洁科技有限公司 一种洗地车水刮安装结构
EP2773253B1 (de) 2011-11-02 2018-03-21 Alfred Kärcher GmbH & Co. KG Handgeführte bodenreinigungsmaschine
WO2013064182A1 (de) 2011-11-02 2013-05-10 Alfred Kärcher Gmbh & Co. Kg Handgeführte bodenreinigungsmaschine
MX2014009671A (es) 2012-02-16 2014-09-11 Tennant Co Vehiculo de mantenimiento de superficie con ensamblaje de escurridor de liberacion rapida.
EP2914155B1 (de) * 2012-10-30 2016-12-21 Wetrok AG Bodenreinigungsmaschine
ITFI20130152A1 (it) * 2013-06-27 2014-12-28 O Fiorentini S P A Ing Macchina lavapavimenti
ITNO20130007A1 (it) 2013-11-13 2015-05-14 Bianca Montaldi Macchina semovente per lavaggio ed asciugatura di pavimenti
DE102022111607A1 (de) * 2022-05-10 2023-11-16 Hako Gmbh Saugfußanordnung für eine Bodenreinigungsmaschine

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Publication number Priority date Publication date Assignee Title
US4380844A (en) * 1980-09-12 1983-04-26 Wetrok, Inc. Automatic floor cleaning machine
US4805256A (en) * 1987-10-02 1989-02-21 Tennant Company Scrubber squeegee pivoted concentric with brush drive
FR2735005B1 (fr) * 1995-06-07 1997-07-18 France Mat Ind Machine pour le nettoyage des sols
DE19713123C1 (de) * 1997-03-27 1998-10-29 Hefter Georg Maschb Bodenbearbeitungsmaschine
AU2002301415B2 (en) * 2001-10-12 2007-10-04 Karcher North America, Inc. Scrubbing machine passive recycling
US7185397B2 (en) * 2004-04-09 2007-03-06 Alto U.S. Inc. Floor cleaning machine
ITVR20040082A1 (it) * 2004-05-11 2004-08-11 Comac S P A Macchina per la pulitura di pavimenti particolarmente per uso industriale

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10092158B2 (en) 2015-05-22 2018-10-09 Tennant Company Surface maintenance machine with a quick alignment mechanism for a cleaning tool
US10881260B2 (en) 2015-05-22 2021-01-05 Tennant Company Surface maintenance machine with a quick alignment mechanism for a cleaning tool

Also Published As

Publication number Publication date
ATE555709T1 (de) 2012-05-15
EP2248455A1 (de) 2010-11-10
DK2248455T3 (da) 2012-08-13

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