EP2640249B1 - Fahrbare bodenreinigungsmaschine - Google Patents

Fahrbare bodenreinigungsmaschine Download PDF

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Publication number
EP2640249B1
EP2640249B1 EP10781656.3A EP10781656A EP2640249B1 EP 2640249 B1 EP2640249 B1 EP 2640249B1 EP 10781656 A EP10781656 A EP 10781656A EP 2640249 B1 EP2640249 B1 EP 2640249B1
Authority
EP
European Patent Office
Prior art keywords
guide member
cleaning machine
floor cleaning
chassis
connecting element
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.)
Active
Application number
EP10781656.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2640249A1 (de
Inventor
Rainer Schäfer
Frank Nonnenmann
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP2640249A1 publication Critical patent/EP2640249A1/de
Application granted granted Critical
Publication of EP2640249B1 publication Critical patent/EP2640249B1/de
Active 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
    • A47L11/40—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
    • 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
    • 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
    • A47L11/28—Floor-scrubbing machines, motor-driven
    • A47L11/282—Floor-scrubbing machines, motor-driven having rotary tools
    • 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

Definitions

  • the invention relates to a mobile floor cleaning machine with a chassis, are rotatably mounted on the wheels, and with at least one cleaning unit, which has at least one cleaning tool and which is coupled via a guide member to the chassis.
  • Such floor cleaning machines can be moved along a floor surface to be cleaned, wherein the bottom surface can be cleaned by means of the at least one cleaning tool of the cleaning unit.
  • the at least one cleaning tool is usually rotationally driven for this purpose.
  • Such floor cleaning machines are known for example in the form of scrubbing machines, in which the cleaning unit is designed as a brush head on which at least one scrub roller is rotatably mounted, which can be rotated by a motor about its axis of rotation in rotation.
  • the cleaning unit is coupled via guiding and lifting organs to the chassis.
  • the lifting member By means of the lifting member, the cleaning unit between a raised position and a lowered position can be moved back and forth.
  • the at least one cleaning tool of the cleaning assembly occupies a distance from the bottom surface, and in the lowered position, the at least one cleaning tool can machine the bottom surface.
  • the guide member is used to transfer shear forces from the chassis to the cleaning unit in the process of floor cleaning machine. By means of the guide member, the cleaning unit can be guided by the chassis of the floor cleaning machine.
  • Object of the present invention is to develop a mobile floor cleaning machine of the type mentioned in such a way that in the event of a frontal collision of the floor cleaning machine with an obstacle, the risk of damage to the floor cleaning machine or obstacle can be kept low.
  • the guide member forms a kind of crumple zone, which can deform elastically in the event of a frontal collision of the floor cleaning machine with an obstacle and thereby insulate occurring impact forces. The risk of damage to the floor cleaning machine or even the obstacle that hits the floor cleaning machine is thereby reduced.
  • the function of the elastic deformation of the guide member can be achieved in that the guide member of an elastically deformable Material is made.
  • the use of such materials has the disadvantage that they usually have no high mechanical stability and therefore the exact guidance of the cleaning unit during the cleaning operation of the floor cleaning machine is not guaranteed in all cases. It is particularly advantageous, therefore, if the guide member is designed form-elastic.
  • the shape of the guide member in a frontal collision of the floor cleaning machine with an obstacle can change elastically to limit occurring impact forces.
  • the guide member has at least one push bar with two obliquely aligned bracket arms.
  • the free ends of the bail arms may approach each other by elastic deformation.
  • the at least one push bar of the guide member is preferably configured U-shaped or V-shaped or C-shaped.
  • the two yoke arms of the at least one push bar can be integrally connected to each other.
  • the at least one push bar is designed as a one-piece molded part. It can be provided, for example, that the at least one push bar is made as a one-piece plastic molded part or as a die-cast part made of an aluminum alloy.
  • the guide member comprises two push bars, which are rigidly connected to one another via a traverse.
  • the two push handle horizontal executives can be easily transferred from the chassis to the cleaning unit, and the rigid coupling of the two push bar on the traverse ensures that the guide member has a high mechanical strength with respect to laterally acting forces.
  • the two push bars of the guide member are aligned parallel to each other. It can be provided, for example, that the two push brackets each define an ironing plane, which is vertically aligned.
  • traverse connects the cleaning unit facing end portions of the push bar with each other.
  • the guide member comprises at least one front, the cleaning unit associated with connecting element and at least one rear, the chassis associated connecting element, which cooperate for producing mechanical connections with corresponding connecting elements of the cleaning unit or the chassis.
  • the guide member can be connected to the chassis and the cleaning unit.
  • the mechanical connections are releasable.
  • it can be provided that at least the mechanical connection between the chassis and the guide member can be produced and released without tools.
  • the guide member favorably has at least one first stop element, which can be applied flat to an associated stop face of the chassis.
  • first stop element In the event of a frontal collision of the floor cleaning machine collision forces can be transmitted via the at least one first stop element from the guide member to the chassis.
  • the flat contact of the stop element on the stop surface reduces pressure forces occurring thereby and thereby prevents the risk of damage to the guide member and / or the chassis.
  • the collision forces can thus independently of the rear connecting element of the guide member and independently of the rear Connecting member associated connecting element of the chassis are transmitted from the guide member to the chassis. The risk that the fasteners are damaged in a frontal collision of the floor cleaning machine can be kept very low.
  • the at least one connecting element of the chassis has a first receptacle and the first receiving remote from the first stop surface, wherein the rear connecting element of the guide member inserted into the first receptacle and the first stop element of the guide member can be applied to the first stop surface.
  • the at least one connecting element of the chassis can be designed, for example, in the manner of a hook, which projects from a base part and forms a receptacle in combination with the base part, into which a rear connecting element of the guide member can be inserted.
  • An end face of the hook facing the cleaning unit can form a first stop face, against which the first stop element of the guide member arranged at a distance from the rear connecting element can be applied flatly.
  • the first receptacle opens in the direction away from the cleaning unit.
  • the rear connecting element of the guide member can be easily inserted from behind into the receptacle.
  • the receptacle may be configured, for example, U-shaped.
  • the at least one rear connecting element of the guide member is preferably designed as a rear bearing pin which extends between two prongs of a rear bearing fork of the guide member.
  • the two prongs of the rear bearing fork are integrally connected to the rear bearing pin.
  • the rear bearing fork is designed as a one-piece plastic molding.
  • the guide member has two rear connecting elements, which are configured as aligned rear bearing pin aligned.
  • the guide member on two rear storage forks, each with two prongs, between which a rear bearing pin extends.
  • the two rear bearing journals are aligned with each other and each serve the mechanical connection of the guide member with the chassis of the floor cleaning machine.
  • the at least one connecting element of the cleaning unit has, in an advantageous embodiment of the invention, a second receptacle into which a front connecting element of the guide member can be inserted.
  • a securing element immerses in the second receptacle, which engages behind the inserted into the second receptacle front connecting element.
  • the securing element can be designed, for example, in the form of a securing bolt. This makes it possible to insert the front connecting element of the guide member into the second receptacle in a first assembly step; and then in a second assembly step, the securing element can be inserted into the second receptacle, wherein it engages behind the second connecting element and thereby ensures that the front connecting element can not be inadvertently separated from the second receptacle.
  • the second receptacle opens conveniently inclined to the vertical in the direction of a floor surface to be cleaned facing direction. This makes it possible to insert the second connecting element obliquely from below into the second receptacle, to establish a mechanical connection between the guide member and the cleaning unit.
  • the second shot is conveniently designed C-shaped.
  • the at least one front connecting element is configured in an advantageous embodiment of the invention as a front bearing pin which extends between two prongs of a front bearing fork of the guide member. This allows easy installation of the floor cleaning machine, and also ensures a structurally simple way a pivotal mounting of the guide member on the cleaning unit.
  • the guide member has two front connecting elements, which are designed as alignment aligned front bearing pin.
  • the guide member may for this purpose have two front bearing forks, each with two prongs, between which a front bearing pin extends.
  • a particularly high mechanical strength of the guide member is achieved in an advantageous embodiment in that the guide member has two front and two rear connecting elements, which are arranged at the vertices of an imaginary rectangle.
  • a front and a rear connecting element can be aligned with each other in such a configuration in the direction of travel of the floor cleaning machine, and in addition, each of the front connecting elements can be aligned transversely to the direction of travel of the floor cleaning machine aligned with each other and also the rear connecting elements.
  • the guide member has at least one second stop element, which in the case of elastic deformation of the guide member can be applied to a second stop surface of the chassis.
  • the guide member comprises at least a first stop element and in addition thereto at least one second stop element.
  • the at least one second stop element is arranged between a first stop element and a front connecting element of the guide member.
  • the guide member has at least one front bearing fork and at least one rear bearing fork, each with two prongs, between which a journal extends.
  • the storage forks can each have a bearing web, which connects the two prongs to each other, and which forms a stop element which can be applied to a stop surface of the chassis.
  • the at least one second stop surface of the chassis is arranged in a preferred embodiment of a bearing block of the chassis.
  • the bearing block can store, for example, a drive motor of the floor cleaning machine or an axis of the floor cleaning machine.
  • the chassis comprises two bearing blocks, each forming a second stop surface.
  • the guide member has two push bars, which are connected to one another via a crossbar.
  • two bearing blocks of the chassis are arranged between the two push brackets, each forming a second stop surface; and the two push bars wear on their end facing the cleaning unit in each case a bearing fork, which forms with a bearing web a second stop element, which can be applied to a second stop surface.
  • the Traverse which connects the two push bar together, is favorably aligned in alignment with the bearing webs of the two front storage forks.
  • a mobile floor cleaning machine according to the invention is shown schematically using the example of a scrubbing machine 10, which can be moved along a bottom surface 12 in order to clean the bottom surface 12.
  • the scrubbing machine 10 has a chassis 14, which carries a housing 16, and on the wheels 17, 18, 19, 20 are rotatably mounted.
  • the two front wheels 17 and 18 are connected to each other via a common axis 21.
  • the housing 16 takes in the usual way known to a person skilled in the art and therefore not shown in the drawing cleaning liquid tank and a well-known and not shown in the drawing dirty liquid tank.
  • a cleaning liquid preferably water
  • the dirty liquid tank can be acted upon by a likewise known and therefore not shown in the drawing suction unit of the scrubbing machine 10 with negative pressure.
  • the dirty liquid tank is connected to an arranged on the chassis 14 suction bar 24 in flow communication.
  • the suction bar 24 has a suction lip 26, and can between its in FIG. 1 shown raised position and a not shown in the drawing lowered position to be moved back and forth. In the lowered position, the suction lip 26 engages the bottom surface 12.
  • a cleaning unit in the form of a brush head 28 is arranged in front of the chassis 14, which has two cleaning tools in the form of a first scrub roller 30 and a second scrub roller 31.
  • the brush head 28 is connected to the chassis 14 via a lifting member 34 acting on the top side of the brush head 28 and a guide member 36 acting on the back of the brush head 28.
  • the lifting member 34 By means of the lifting member 34, the brush head 28 between a in FIG. 1 illustrated raised position and a in FIG. 2 shown lowered position to be moved back and forth. In the lowered position, the two scrub rollers 30 and 31 engage the bottom surface 12 to clean them. In the raised position, the scrub rollers 30 and 31 are spaced from the bottom surface 12.
  • the brush head 28 can be guided by the chassis 14, so that the brush head 28 follows the movement of the chassis 14.
  • thrust forces can be transmitted from the chassis 14 via the guide member 36 to the brush head 28.
  • the guide member 36 includes a first push bar 38 and a second push bar 40.
  • the two push bars 38, 40 are identical and each have a front bracket arm 42 and 44 and a rear bail arm 46 and 48, respectively.
  • the respective bracket arms 42 and 46 or 44 and 48 are integrally connected to each other and aligned at an angle to each other.
  • the front and rear bracket arms are V-shaped at an angle of about 120 ° to each other.
  • the front bail arm 42 of the first push bar 38 carries at its front end a first front bearing fork 50
  • the front bail arm 44 of the second push bar 40 carries at its front end a second front bearing fork 52.
  • the two front bearing forks 50, 52 are identical. They each include two tines 54, 56 and 58, 60, which are integrally connected to each other via a bearing web 62 and 64, and between which a respective front bearing pin 66 and 68 extends.
  • the two front bearing pins 66, 68 are aligned with each other, and also the front bearing webs 62 and 64 are aligned with each other.
  • a cross member 70 is between the bearing webs 62, 64 extends in alignment with the bearing webs 62, 64, a cross member 70, via which the two push bars 38, 40 are rigidly interconnected.
  • the rear arm 46 of the first push bar 38 carries at its free end a first rear bearing fork 72 with two prongs 74, 76 which are rigidly connected to each other via a first rear bearing web 78, and between which a rear bearing pin 80 extends.
  • a second rear bearing fork 82 is arranged with two tines 84, 86, the over a second rear bearing bar 88 are integrally connected to each other, and between which a second rear bearing pin 90 extends.
  • the rear bearing journals 88, 90 each form a rear connecting element of the guide member 36. They each cooperate with a corresponding connecting element of the chassis 14.
  • the chassis 14 has two connecting hooks 92 and 94, which respectively protrude from a base part 96 or 98 and define first receptacles 100 and 102, respectively.
  • the first receptacles 100, 102 are U-shaped and open horizontally in the direction away from the brush head 28 towards the rear. This is especially true FIG. 3 clear.
  • a rear bearing pin 80 and 90 are used in the first receptacles 100, 102, respectively.
  • the guide member 36 can initially be aligned substantially perpendicular to the chassis 14. After the insertion of the rear bearing journals 80, 90, the guide member 36 can then be pivoted so far forward about the bearing journals 80, 90 that the respective connection hook 92 or 94 with its face surface 104 facing the brush head 28 flatly against a front contact surface 106 or 108 of the first rear bearing web 78 and the second rear bearing web 88 abuts.
  • the end surfaces 104 of the connecting hooks 92, 94 thus each form a first stop surface, and the two rear bearing webs 78 and 88 each define a first stop element, which can be applied flat to the respective first stop surfaces.
  • the front bearing journals 66 and 68 form front connecting elements of the guide member 36, and each cooperate with a second receptacle 112, which are arranged on the brush head 28.
  • the brush head 28 has two identically designed connecting elements 110, 111, each of which defines one of the substantially C-shaped second receptacles 112, into which a front bearing journal 66 or 68 can be inserted obliquely from below.
  • the connecting elements 110, 111 each have a vertically oriented through-passage 114 on, which is penetrated by a securing bolt 116.
  • the securing bolt 116 engages with its downwardly in the direction of the bottom surface 12 from the passageway 114 projecting end portion inserted into the second receptacle 112 front bearing pin 66 and 68, so that it is secured in the second receptacle 112.
  • the chassis 14 has two downwardly projecting bearing blocks 118, 119.
  • the bearing blocks 118, 119 are used to support the axis 21 of the two front wheels 17 and 18.
  • a drive motor for the wheels 17, 18 may be mounted on the bearing blocks 118 in each case.
  • the bearing blocks 118, 119 With their front side facing the brush head 28, the bearing blocks 118, 119 form a second stop surface 120, 121, to each of which a rear contact surface 122 and 124 of the front bearing webs 62 and 64 can be applied flat.
  • the front bearing webs 62, 64 thus form second stop elements of the guide member 36, which can be applied to the second stop surfaces 120, 121 of the bearing blocks 118, 119.
  • the guide member 36 is designed as a one-piece plastic molding. Preferably, it is made of a foamed polypropylene material. About the guide member 36 may during normal operation of the Scrubber 10 executives from the chassis 14 are transferred to the brush head 28.
  • the guide member 36 in this case allows a pivotable mounting of the brush head 28 on the chassis 14, so that the brush head 28 can follow any unevenness of the bottom surface 12.
  • the assembly of the guide member 36 on the chassis 14 and the brush head 28 is very simple.
  • the rear pivot pins 80, 90 can be used without the use of a tool in the first receptacles 100 and 102 of the connecting hooks 92 and 94, and the front bearing pins 66, 68 can after loosening the respective securing bolts 116 obliquely from below in the second receptacles 112 of the connecting elements 110, 111 are used. Unintentional release of the front bearing journals 66, 68 from the second receptacles 112 can be easily prevented by inserting the securing bolts 116.

Landscapes

  • Cleaning In General (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
EP10781656.3A 2010-11-15 2010-11-15 Fahrbare bodenreinigungsmaschine Active EP2640249B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/067492 WO2012065623A1 (de) 2010-11-15 2010-11-15 Fahrbare bodenreinigungsmaschine

Publications (2)

Publication Number Publication Date
EP2640249A1 EP2640249A1 (de) 2013-09-25
EP2640249B1 true EP2640249B1 (de) 2014-09-17

Family

ID=44314938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10781656.3A Active EP2640249B1 (de) 2010-11-15 2010-11-15 Fahrbare bodenreinigungsmaschine

Country Status (6)

Country Link
US (1) US8856998B2 (da)
EP (1) EP2640249B1 (da)
CN (1) CN103220957B (da)
DK (1) DK2640249T3 (da)
RU (1) RU2537161C1 (da)
WO (1) WO2012065623A1 (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3188849B1 (en) 2014-09-05 2022-02-16 Tennant Company Systems and methods for supplying treatment liquids having nanobubbles
USD1041108S1 (en) * 2021-07-15 2024-09-03 Alfred Kaercher Se & Co. Kg Docking station for a floor cleaning machine
USD1016416S1 (en) * 2022-02-14 2024-02-27 Karcher North America, Inc. Floor cleaning machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3942218A (en) * 1972-05-22 1976-03-09 Tennant Company Scrubbing machine
US5016310A (en) * 1989-08-21 1991-05-21 Tennant Company Floor scrubber having laterally variable scrub brush position
US5483718A (en) 1994-10-03 1996-01-16 Tennant Company Floor scrubbing machine having impact energy absorption
US5742966A (en) * 1994-10-05 1998-04-28 Tono; Gianni Floor-cleaning machine provided with movable brushes and dragging disc
US5611105A (en) * 1995-01-13 1997-03-18 Tennant Company Torsionally flexible frame structure
EP0910981A1 (en) 1997-10-22 1999-04-28 Alto U.S. Inc. Brush head positioning system
DE102009041362A1 (de) * 2009-09-11 2011-03-24 Vorwerk & Co. Interholding Gmbh Verfahren zum Betreiben eines Reinigungsroboters

Also Published As

Publication number Publication date
EP2640249A1 (de) 2013-09-25
DK2640249T3 (da) 2014-10-27
CN103220957B (zh) 2015-06-03
RU2013127137A (ru) 2014-12-27
US8856998B2 (en) 2014-10-14
CN103220957A (zh) 2013-07-24
RU2537161C1 (ru) 2014-12-27
WO2012065623A1 (de) 2012-05-24
US20130247313A1 (en) 2013-09-26

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