EP3510910A1 - Ventouse à pression supplémentaire - Google Patents

Ventouse à pression supplémentaire Download PDF

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Publication number
EP3510910A1
EP3510910A1 EP18151292.2A EP18151292A EP3510910A1 EP 3510910 A1 EP3510910 A1 EP 3510910A1 EP 18151292 A EP18151292 A EP 18151292A EP 3510910 A1 EP3510910 A1 EP 3510910A1
Authority
EP
European Patent Office
Prior art keywords
coupling end
squeegee
floor cleaning
cleaning machine
cleaned
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
EP18151292.2A
Other languages
German (de)
English (en)
Other versions
EP3510910A8 (fr
Inventor
Philip Jürß
Christian Tabeling
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.)
Hako GmbH
Original Assignee
Hako 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
Application filed by Hako GmbH filed Critical Hako GmbH
Priority to EP18151292.2A priority Critical patent/EP3510910A1/fr
Publication of EP3510910A1 publication Critical patent/EP3510910A1/fr
Publication of EP3510910A8 publication Critical patent/EP3510910A8/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
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/10—Floor surfacing or polishing machines motor-driven
    • A47L11/14—Floor surfacing or polishing machines motor-driven with rotating tools
    • A47L11/16—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes
    • A47L11/162—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes having only a single disc brush
    • A47L11/1625—Floor surfacing or polishing machines motor-driven with rotating tools the tools being disc brushes having only a single disc brush with supply of cleaning agents
    • 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
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/20—Floor surfacing or polishing machines combined with vacuum cleaning devices
    • A47L11/201—Floor surfacing or polishing machines combined with vacuum cleaning devices with supply of cleaning agents
    • 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
    • A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
    • A47L11/4055—Movement of the tools or the like perpendicular to the cleaning surface for lifting the tools to a non-working position

Definitions

  • the present invention relates to a floor cleaning machine with a machine frame, on which a chassis is mounted to move the floor cleaning machine on a floor surface to be cleaned, with a squeegee, on which an open to the floor surface to be cleaned suction chamber is formed with a vacuum source of the Floor cleaning machine is connected to a holding arm assembly which is pivotally mounted about a horizontal pivot axis on the machine frame, wherein the squeegee is spaced from the pivot axis attached to the support arm assembly, so that the vertical position of the squeegee relative to the surface to be cleaned between a raised position, in the squeegee is spaced from the bottom surface to be cleaned, and a lowered position is adjustable, in the squeegee abuts the bottom surface to be cleaned.
  • Conventional floor cleaning machines and especially scrubber-driers have on the machine frame a chassis for moving the floor cleaning machine on a floor surface to be cleaned, and on the machine frame, a cleaning device is provided which can engage with the floor surface to be cleaned while applying cleaning liquid on the bottom surface.
  • such floor cleaning machines have a so-called suction, which is arranged behind the cleaning device seen in the direction of travel and which is configured to receive the applied cleaning liquid again from the bottom surface.
  • the squeegee preferably has two extending from a Saugfußbasis substantially parallel to each other sealing lips whose remote from the Saugfußbasis edges in a common support plane, so that when the Saugfußes on the bottom surface of a suction space is limited by the sealing lips.
  • the suction chamber is acted upon by means of a provided on the floor cleaning machine vacuum source such as a suction turbine with negative pressure, so that cleaning liquid can be sucked out of the suction chamber and thus from the bottom surface.
  • the squeegee is in the lowered position and thus in contact with the floor surface to be cleaned.
  • the squeegee is previously transferred from the lowered position to the excavated position where it is spaced from the floor surface to prevent wear on the squeegee.
  • the floor cleaning machine has a machine frame to which a landing gear is mounted to move the floor cleaning machine over a floor surface to be cleaned, and a squeegee on which a suction chamber open to the floor surface to be cleaned is formed which is connected to a vacuum source of the floor cleaning machine ,
  • a holding arm assembly is provided which is pivotally supported about a horizontal pivot axis on the machine frame, wherein the squeegee is mounted spaced from the pivot axis of the support arm assembly, so that the vertical position of the squeegee relative to the surface to be cleaned between a raised position, in which Squeegee is spaced from the bottom surface to be cleaned, and a lowered position is adjustable, in the squeegee abuts the bottom surface to be cleaned.
  • a linear actuator which has a first coupling end and a second coupling end, wherein the distance of the first coupling end relative to the second coupling end along an adjustment axis is adjustable and wherein the first coupling end is connected to the Haltearman extract.
  • the second coupling end is held displaceably in one direction on the machine frame, which extends at an angle of less than 90 °, preferably parallel, to the adjustment axis.
  • a biasing member is provided which is coupled to the second coupling end such that it biases the linear actuator in the direction along the adjustment axis, in which the first coupling end is moved to lower the squeegee on the floor surface to be cleaned.
  • the second coupling end of the linear actuator with the aid of the suction is moved from the lowered position to the excavated position, then applied with a biasing force when the second coupling end is moved in the process of the linear actuator relative to the machine frame.
  • the direction either parallel to the adjustment axis or at least at an angle less than 90 ° thereto, for example, a spring can be compressed, which then exerts the bias on the second coupling end and thus the linear actuator. Since the linear actuator is firmly connected to the Gararmanowski, is pressed by the bias of the squeegee against the bottom surface to be cleaned.
  • the biasing element thus generates a force which acts in addition to the weight of the suction cup, so that the squeegee is pressed against the ground surface with an increased force relative to the weight force. This ensures that the squeegee abuts in a sealing manner on the floor surface to be cleaned and a sufficiently large suction in the suction chamber is achieved to again suck the cleaning fluid from the floor surface to be cleaned.
  • the squeegee must have a large weight in order to achieve the required Bacandruckkraft.
  • the linear actuator does not have to be controlled in a complicated manner in order, for example, to apply the required pressing force via a control loop. Rather, the linear actuator is moved only between the required for the lowered and the excavated position positions.
  • the additional pressing force generated by the biasing member only acts when the squeegee is in the lowered position. The extra force does not work when the squeegee is raised. This has the further advantage that when the squeegee is to be pivoted in the raised position, not an additional weight must be pivoted with what would be undesirable.
  • the suction chamber is delimited by at least one elastic sealing lip extending toward the bottom surface to be cleaned.
  • a sealing lip ensures that the suction chamber is reliably sealed against the bottom surface and can only flow into the suction space at the points where this, for example, by openings, also desired.
  • such sealing lips require a sufficient pressure force in order to achieve the sealing effect, so that the use according to the invention of the biasing element is advantageous in a structure with sealing lips.
  • the second coupling end of the linear actuator is guided in a guide rail on the machine frame. This is a simple structure to realize the movable mounting of the second coupling end of the linear actuator on the machine frame.
  • the biasing member has a flexible cable portion and extends between first and second ends.
  • the second coupling end of the linear actuator is in this embodiment connected to a guide element along which the cable section is guided so that it is movable relative to the second coupling end and is displaced relative to the guide element, when the linear actuator for moving the suction cup from the excavated position in the lowered position is moved.
  • the first end of the biasing member is connected to the first coupling end, and the second end of the biasing member is fixedly connected to the machine frame.
  • the biasing member may comprise a spring portion, in particular in the form of a helical spring, which is tensioned when the linear actuator is moved to the position corresponding to the lowered position.
  • the spring portion is provided at the second end of the biasing member which is fixedly connected to the machine frame.
  • the biasing element of the cable section and the spring section extends in a plane in which the adjustment axis extends or to which the adjustment axis is parallel ,
  • a spring element can be provided, against which the second coupling end of the linear actuator is supported when the linear actuator has moved into the position corresponding to the lowered position. Then, the spring element exerts a force on the second coupling end, which in turn ensures that a pressing force is exerted on the squeegee. More preferably, the second coupling end may be in the raised position spaced from the free end of the spring element. The latter prevents that in a further lifting by hand, the effect of the spring must be overcome with.
  • a spring element may be provided, via which the second coupling end of the linear actuator is connected to the machine frame. Also in this embodiment it is achieved that in the lowered position, an additional force is exerted on the second coupling end of the linear actuator, which in turn causes an increased pressure force for the squeegee.
  • the connection of the first end of the spring element to the second coupling end and / or the connection between the second end of the spring element and the machine frame can be provided with play. This in turn makes it possible to further excavate the squeegee from the raised position without having to work against the spring force.
  • the linear actuator can be designed as a hydraulic cylinder, a linear motor or a pneumatic cylinder.
  • FIG. 1 shows a side view of a first embodiment of a floor cleaning machine 1 according to the invention, which has a machine frame 3, on which a formed of a front wheel 5 and two rear wheels 7 chassis is provided, wherein the front wheel 5 is steerable and is equipped with a drive.
  • the chassis of the wheels 5, 7, the floor cleaning machine 1 can be moved over a floor surface 9 to be cleaned.
  • the floor cleaning machine 1 has a cleaning unit 11, which can be lowered and thus brought into engagement with the bottom surface 9 to be cleaned.
  • the comesaggregrat 11 is disposed between the front wheel 5 and the rear wheels 7.
  • Such cleaning units 11 are well known from the prior art, so it requires no further explanation for this purpose.
  • the cleaning unit 11 is designed so that cleaning liquid can be applied to the floor surface 9 to be cleaned, wherein moreover brushes are provided which can engage with the bottom surface 9 when the cleaning unit 11 is lowered. Instead of brushes can also be provided pads or other engagement elements on the cleaning unit.
  • the floor cleaning machine 1 is configured as a ride-on machine, in which a user sits on a mounted on the machine frame 3 seat 13 and controls the machine.
  • the present invention is not limited to such ride-on machines, but can also be used in hand-held floor cleaning machines.
  • the Saugfußan extract 15 has the actual Sussuß 17, which includes a Saugfußbasis 19, from which a rear sealing lip 21 extends downwardly away.
  • a front sealing lip is provided, which runs substantially parallel to the rear sealing lip 21, so that when the downwardly facing ends of the sealing lips 21 rest on the bottom surface 9 to be cleaned, a suction space is formed between them. Which is open to the floor surface 9 to be cleaned.
  • the suction chamber is connected via a provided on the Saugfußbasis 19 connection 23 and a hose 25 with a provided in the floor cleaning machine 1 and not shown in detail negative pressure source.
  • the squeegee 17 between an in FIG. 1 illustrated lowered position in which the sealing lips 21 rest on the bottom surface 9 to be cleaned, and a raised position about a horizontal axis 27 are pivoted, wherein in the excavated position, the sealing lips 21 are spaced from the bottom surface 9 to be cleaned.
  • the Saugfußan Mr 15 has for this purpose a Gararman Ich, on the one hand between the horizontal axis 27 and the Saugfuß 17 extending support arms 29 comprises, whose one ends are connected about the horizontal axis 27 pivotally connected to the machine frame 3, while the other ends on the suction 17th are firmly articulated.
  • the holder arm assembly includes an actuating arm 31 which is fixedly connected to the support arms 29 and extending away from the horizontal axis 27 upwards.
  • the end of the actuator arm 31 remote from the horizontal axis 27 is connected to a first coupling end 33 of a linear actuator 35, which further has a second coupling end 37 slidably received in the machine frame 3 in a linear guide rail 39.
  • the linear actuator 35 is such configured such that the distance between the first coupling end 33 and the second coupling end 37 can be adjusted along an adjustment axis 41 running between them.
  • the guide rail 39 extends parallel to the adjustment axis 41.
  • the adjustment axis and the guide rail form an angle smaller than 90 °.
  • a biasing element which in this preferred embodiment comprises a cable section 45 and a spring section 47 in the form of a helical spring.
  • a first end 49 of the biasing member of the cable portion 45 and the spring portion 47 is connected to the first coupling portion 33, and a second end 51 of the biasing member formed on the spring portion 47 is fixedly connected to the machine frame 3 (see FIG. 4 ).
  • the cable section 45 is guided around the deflection rollers 43, so that when the distance between the first and second coupling ends 33, 37 of the linear actuator 35 is changed, the biasing element moves relative to the second coupling end 37.
  • the spring portion 47 of the biasing member is stretched, so that in this structure due to the tension of the spring portion 47, a force is applied to the linear actuator 35, the along the adjustment axis 41 and is directed towards the second coupling end 33.
  • the bias is thus directed in the direction in which the first coupling end 33 is moved to move the Saugfußes 17 in the lowered position.
  • FIGS. 6 and 7 a second embodiment of a floor cleaning machine according to the invention is shown, which differs from the first embodiment only in that the biasing member with which the linear actuator 35 and the second coupling end 37 is biased along the adjustment axis 41, from that of the first embodiment.
  • a spring element 53 is arranged opposite the second coupling end 37 of the linear actuator 35 on the guide rail 39.
  • the entire linear actuator 35 is biased along the adjustment axis 41 in the direction of the first coupling end 33, so that due to the compression of the spring element 53, an additional force or torque is exerted on the actuating arm 31.
  • This additional force causes an additional pressure force for the suction cup 17, with which this is pressed against the bottom surface 9 to be cleaned.
  • This embodiment also ensures in this embodiment that the squeegee 17 is acted upon by an additional force, resulting in an improved seal between the sealing lips and the floor surface to be cleaned, without the need for an additional weight on the suction cup 17.
  • This embodiment is further constructed such that the second coupling end 37 in the raised position (FIG. Fig. 7 ) spaced from the free end of the spring element 53 is. This prevents that in a further lifting by hand from the excavated position, the effect of the spring element 53 must be overcome by the user with.
  • FIGS. 8 and 9 illustrated third embodiment of a floor cleaning machine according to the invention differs from the second embodiment in that in this case the linear actuator 35 must be moved together, ie, the distance between the first and second coupling end 33, 37 is reduced to the squeegee 17 from the excavated position ( FIG. 9 ) in the lowered position ( FIG. 8 ) lower.
  • FIGS. 8 and 9 It can be seen that at the linear actuator 35 facing the end of the guide rail again a spring element 53 is provided, that then comes to rest with the second coupling element 37 when the linear actuator 35 is moved together to the squeegee 17 from the excavated position ( FIG. 9 ) in the lowered position ( FIG. 8 ), in which the sealing lips come to rest with the bottom surface 9 to be cleaned. Again, the retainer arm 29 pivots clockwise about the horizontal axis 27.
  • the spring element 53 When the squeegee 17 is in the lowered position, the spring element 53 is compressed and exerts an additional force on the second coupling end 37 extending along the adjustment axis 41 and into the Direction is directed, in which also the first coupling end 33 is moved when the squeegee 17 is moved to the lowered position.
  • This force causes a force to be exerted on the entire linear actuator 35 in the same direction as the first coupling element 33 is moved when the squeegee 17 is lowered.
  • This also causes an additional pressure force on the suction cup 17 towards the bottom surface 9 to be cleaned, without it also here an additional weight on the squeegee 17 is required. Again, this additional pressure force causes a better seal between the sealing lips on the one hand and bottom surface 9 on the other.
  • this embodiment is constructed so that the second coupling end 37 in the raised position ( Fig. 9 ) spaced from the free end of the spring element 53 is arranged. As a result, it is also prevented in this case that the user has to work against the action of the spring element 53 during a further lifting by hand from the excavated position.
  • FIGS. 10 and 11 is a fourth embodiment of a floor cleaning machine according to the invention or the structure for raising and lowering the suction cup 17 thereof shown.
  • This embodiment differs from those described above in that a spring member 53 having a first end 55 fixedly connected to the second coupling end 37 of the linear actuator 35, while the second end 57 of the spring member 53 is fixedly connected to the machine frame 3.
  • the fixed connection between the spring element 53 and the second coupling end 37 of the linear actuator 35 is designed with a little play.
  • the connection of the spring element 53 may be provided with the machine frame 3 with play. In both cases, there is the advantage that upon pivoting of the suction cup 17, when this is in the raised position, the spring does not have to be stretched in the light lifting associated with the pivoting. This would otherwise be associated with an additional burden on the operator.
  • the embodiments have in common that the biasing elements used 47, 51, 53 cause an additional bias on the linear actuator 35, which is directed in the same direction as the first coupling element 33 is moved when the squeegee 17 is lowered ,
  • This bias in turn causes an additional pressure force on the suction cup 17.
  • This is associated with the advantage that, although a pressing force is exerted on the suction cup 17, but this is not connected to an additional weight in the suction cup 17. This can still be operated in a simple manner.

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  • Nozzles For Electric Vacuum Cleaners (AREA)
EP18151292.2A 2018-01-11 2018-01-11 Ventouse à pression supplémentaire Pending EP3510910A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18151292.2A EP3510910A1 (fr) 2018-01-11 2018-01-11 Ventouse à pression supplémentaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18151292.2A EP3510910A1 (fr) 2018-01-11 2018-01-11 Ventouse à pression supplémentaire

Publications (2)

Publication Number Publication Date
EP3510910A1 true EP3510910A1 (fr) 2019-07-17
EP3510910A8 EP3510910A8 (fr) 2019-09-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18151292.2A Pending EP3510910A1 (fr) 2018-01-11 2018-01-11 Ventouse à pression supplémentaire

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114947644A (zh) * 2022-07-01 2022-08-30 广东嘉得力清洁科技股份有限公司 一种吸水扒结构及应用的清洁车

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130212814A1 (en) * 2012-02-16 2013-08-22 Tennant Company Surface maintenance vehicle with compact side brush assembly
US20140068885A1 (en) * 2012-09-10 2014-03-13 Karcher North America, Inc. Cable-actuated lift system
WO2015010723A1 (fr) * 2013-07-23 2015-01-29 Alfred Kärcher Gmbh & Co. Kg Machine de nettoyage des sols et procédé de réglage de la position d'une brosse rotative sur une machine de nettoyage des sols
EP2954817A1 (fr) * 2014-06-11 2015-12-16 Hako GmbH Machine de nettoyage du sol
WO2017100577A1 (fr) * 2015-12-09 2017-06-15 Tennant Company Machine d'entretien de surface

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130212814A1 (en) * 2012-02-16 2013-08-22 Tennant Company Surface maintenance vehicle with compact side brush assembly
US20140068885A1 (en) * 2012-09-10 2014-03-13 Karcher North America, Inc. Cable-actuated lift system
WO2015010723A1 (fr) * 2013-07-23 2015-01-29 Alfred Kärcher Gmbh & Co. Kg Machine de nettoyage des sols et procédé de réglage de la position d'une brosse rotative sur une machine de nettoyage des sols
EP2954817A1 (fr) * 2014-06-11 2015-12-16 Hako GmbH Machine de nettoyage du sol
WO2017100577A1 (fr) * 2015-12-09 2017-06-15 Tennant Company Machine d'entretien de surface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114947644A (zh) * 2022-07-01 2022-08-30 广东嘉得力清洁科技股份有限公司 一种吸水扒结构及应用的清洁车

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Publication number Publication date
EP3510910A8 (fr) 2019-09-04

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