EP3206549B1 - Surface cleaning machine having a damping device - Google Patents

Surface cleaning machine having a damping device Download PDF

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Publication number
EP3206549B1
EP3206549B1 EP15775242.9A EP15775242A EP3206549B1 EP 3206549 B1 EP3206549 B1 EP 3206549B1 EP 15775242 A EP15775242 A EP 15775242A EP 3206549 B1 EP3206549 B1 EP 3206549B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
pressure
cleaning roller
cleaning machine
controlled switch
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
EP15775242.9A
Other languages
German (de)
French (fr)
Other versions
EP3206549A1 (en
Inventor
Fabian MOSER
Manuel SCHULZE
Christoph RUFENACH
Johanna BUCHMANN
Andreas MÜLLER
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
Priority to PL15775242T priority Critical patent/PL3206549T3/en
Publication of EP3206549A1 publication Critical patent/EP3206549A1/en
Application granted granted Critical
Publication of EP3206549B1 publication Critical patent/EP3206549B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00Structural features of suction cleaners
    • A47L5/12Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/28Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle
    • A47L5/30Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle with driven dust-loosening tools, e.g. rotating brushes
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A47L11/302Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02Floor surfacing or polishing machines
    • A47L11/20Floor surfacing or polishing machines combined with vacuum cleaning devices
    • A47L11/202Floor surfacing or polishing machines combined with vacuum cleaning devices having separate drive for the cleaning brushes
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4002Installations of electric equipment
    • A47L11/4008Arrangements of switches, indicators or the like
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4013Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4027Filtering or separating contaminants or debris
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4036Parts or details of the surface treating tools
    • A47L11/4041Roll shaped surface treating tools
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4036Parts or details of the surface treating tools
    • A47L11/4044Vacuuming or pick-up tools; Squeegees
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/4063Driving means; Transmission means therefor
    • A47L11/4069Driving or transmission means for the cleaning tools
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/408Means for supplying cleaning or surface treating agents
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/408Means for supplying cleaning or surface treating agents
    • A47L11/4083Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00Details 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
    • A47L9/02Nozzles
    • A47L9/04Nozzles with driven brushes or agitators
    • A47L9/0461Dust-loosening tools, e.g. agitators, brushes
    • A47L9/0466Rotating tools
    • A47L9/0477Rolls
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts 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
    • A47L11/408Means for supplying cleaning or surface treating agents
    • A47L11/4088Supply pumps; Spraying devices; Supply conduits

Definitions

  • the invention relates to a surface cleaning machine, such as in the GB2411823 described, comprising at least one cleaning roller, a drive device for rotationally driving the at least one cleaning roller, a moistening device for applying cleaning fluid to the at least one cleaning roller, and a suction unit device for generating a suction flow, which has at least one suction channel and at least one suction port that of the at least one Cleaning roller is assigned, is in fluid communication.
  • a cleaning device for cleaning a surface which comprises a rotatable brush.
  • a rubber wiper element is also provided, which is spaced apart from the brush and is fastened to an underside of a nozzle housing.
  • a cleaning device with a rotatable brush and a single rubber wiper element is also known.
  • a device for distributing fluid on a brush is known.
  • a device for cleaning and / or caring for textile floor coverings such as carpets with the application of liquid cleaning or care agents is known, with a treatment head that can be moved back and forth over the surface to be treated.
  • Means for applying and possibly distributing the liquid as well as any mechanically acting cleaning organs are arranged in the treatment head in the area of influence of a suction air flow which sucks the applied liquid from the material to be treated again after the cleaning function has ended.
  • the invention is based on the object of providing a surface cleaning machine of the type mentioned at the beginning, which has optimized operating properties.
  • the moistening device comprises at least one pressure-controlled switch which, in an open position, releases a fluid path for cleaning fluid to the at least one cleaning roller and in a closed position blocks the fluid path, and in that the at least one pressure-controlled switch is coupled to the at least one suction channel in a pressure-effective manner, with the at least one pressure-controlled switch moving into the open position and / or holding the open position when a vacuum is applied to the at least one suction channel by a suction flow.
  • the application of fluid to the at least one cleaning roller is coupled to a suction operation. Whether or not the at least one cleaning roller can be acted upon with cleaning fluid depends on a suction operation of the suction unit device.
  • the surface cleaning machine is usually operated in a cleaning operation in such a way that suction takes place. This then means that, in principle, in this operating mode it is possible to apply cleaning fluid to the at least one cleaning roller.
  • one or more pressure-controlled switches can be provided.
  • At least one collecting space for cleaning fluid is provided, the fluid path controllable with respect to opening and closing by the at least one pressure-controlled switch being located between the at least one collecting space and the at least one cleaning roller.
  • Cleaning liquid can be coupled into the collecting space, in particular from a tank device for cleaning liquid. It can thereby be achieved that cleaning fluid is constantly present in the collecting space and can be fed to the at least one cleaning roller when the pressure-controlled switch is opened.
  • the collecting space can be formed, for example, by the interior of a (cleaning liquid) line which leads to the pressure-controlled switch, or it can be formed by a chamber on which the switch is arranged (and into which a line leads).
  • a tank device for cleaning liquid which is in fluid connection with the fluid path and in particular is in fluid connection with the at least one collecting space for cleaning liquid.
  • a (main) shut-off valve can be provided, through which the constant queuing can be switched. In this way, for example, a cleaning operation can be set without the application of cleaning fluid.
  • the tank device is in a normal operating mode of the surface cleaning machine based on the Direction of gravity positioned above the at least one cleaning roller. Cleaning liquid can then be conveyed from the tank device to the at least one cleaning roller in a pump-free manner, driven by gravity.
  • the normal operating mode is a mode in which the surface cleaning machine stands up over the at least one cleaning roller on the surface to be cleaned and an operator also stands up on the surface to be cleaned and refers to an upper end of the surface cleaning machine, which is facing away from the cleaning head is positioned in the direction of gravity above the cleaning head.
  • the at least one pressure-controlled switch has a first surface, which is in pressure-effective connection with the at least one suction channel, and a second surface, which is in pressure-effective connection with the outside space, with a pressure difference between the first surface and the second surface determines the position of the at least one pressure controlled switch. It can thereby be controlled solely via the pressure on the first surface whether the at least one pressure-controlled switch is open or closed.
  • a corresponding pressure-controlled switch can be designed in a simple manner.
  • the application of negative pressure to the at least one suction channel causes a pressure difference between the first surface and the second surface, which brings the at least one pressure-controlled switch into the open position and / or holds it in the open position.
  • the at least one pressure-controlled switch advantageously has a reset device which, when the pressure difference falls below a minimum threshold, effects a reset to the closed position and / or maintains the closed position. In this way, if the application of negative pressure to the first surface is omitted, a return with blocking of the fluid path can be achieved in an automated manner.
  • the resetting device can be formed by an elastic device which, for example, includes additional springs or the like.
  • the resetting device is formed by an inherent elasticity of the at least one pressure-controlled switch.
  • the at least one pressure-controlled switch has a movable membrane. Depending on the pressure difference acting, the membrane can move and cause a transition from the open to the closed position or vice versa.
  • the at least one pressure-controlled switch has at least one movable blocking element for the fluid path, which is arranged in particular on a movable membrane. Blocking or opening can thereby be achieved in a simple manner. Furthermore, by providing a membrane with inherent elasticity, a restoring device can be implemented in a structurally simple manner.
  • the at least one pressure-controlled switch is followed by a distributor for cleaning fluid to the at least one cleaning roller, which distributor is fluidly connected to the fluid path.
  • a uniform application of cleaning fluid to the at least one cleaning roller, in particular over an entire length of the cleaning roller, can be achieved via the distributor.
  • the distributor is formed by a channel or comprises at least one channel.
  • a channel is designed in the shape of a half-shell. Depending on the position of the at least one channel relative to an outlet opening device in relation to the direction of gravity, an operator-controlled and gravity-controlled application of cleaning fluid to the at least one cleaning roller can be achieved or not.
  • the at least one channel extends at least approximately parallel to a longitudinal axis of the at least one cleaning roller and / or extends at least approximately parallel to an axis of rotation of the at least one cleaning roller. In this way, a uniform application of liquid can be achieved in a simple manner.
  • the at least one channel with an outlet opening device extends over at least 80% of a length of the at least one cleaning roller and in particular over an entire length of the at least one cleaning roller. As a result, a good cleaning effect is achieved over the entire length of the at least one cleaning roller.
  • the at least one channel is designed, for example, in the shape of a half-shell. In this way, an intermediate buffer for cleaning liquid can be achieved in a simple manner. Depending on the gravitational potential of the at least one channel to an outlet opening device, the at least one cleaning roller may or may not be exposed to liquid in an operator-controlled manner.
  • the distributor has an outlet opening device which is arranged and designed in such a way that, depending on an angular position of the distributor in relation to the direction of gravity, cleaning fluid flows from the distributor to the at least one cleaning roller or not. In this way, the liquid admission can be adjusted under the control of gravity.
  • the angular position of the distributor in relation to the direction of gravity is determined by an angular position of a longitudinal axis of the surface cleaning machine (and thus of the entire machine) in relation to a surface to be cleaned.
  • This angular position can easily be changed by an operator by raising or lowering a handle.
  • moistening of the at least one cleaning roller is then controlled by gravity via the distributor.
  • the surface cleaning machine is designed to be pump-free with regard to the moistening of the at least one cleaning roller by the moistening device. This results in a structurally simple and space-saving structure. Furthermore, no additional energy consumer such as a pump is necessary.
  • the fluid path has at least one gap channel, which is designed in particular in such a way that a capillary effect occurs for the flow of cleaning fluid.
  • the gap channel is connected downstream of a distributor. A uniform application of liquid to the at least one cleaning roller over its length can thereby be achieved.
  • the at least one gap channel is preferably dimensioned in such a way that a capillary effect also occurs when cleaning agent is contained in the cleaning liquid.
  • a set of the at least one cleaning roller is in contact with or almost in contact with an outlet opening device of the at least one gap channel.
  • Textile fibers of the trim of the at least one cleaning roller can temporarily cover one or more openings on the outlet opening device and thereby generate a negative pressure. This improves the distribution.
  • a distributor for cleaning fluid is connected upstream of the at least one gap channel with respect to a direction of flow for cleaning fluid.
  • the surface cleaning machine is supported on the surface to be cleaned via a cleaning roller which is driven in rotation.
  • the operator stands on the to be cleaned Surface.
  • An embodiment of a surface cleaning machine according to the invention which in the Figures 1 to 4 is shown (and in the Figures 5 to 10 in partial representation) and is designated there by 10, is designed as a floor cleaning machine for hard floors.
  • the surface cleaning machine 10 comprises a device body 12 and a cleaning head 14.
  • the cleaning head 14 is arranged on the device body 12.
  • the surface cleaning machine 10 is supported on the surface 16 to be cleaned via a cleaning roller 18.
  • the device body 12 has a longitudinal axis 20 ( Figures 2 , 3 ).
  • the surface cleaning machine 10 is held in place.
  • a rod 22 is seated on the device body 12. This rod 22 extends in the longitudinal axis 20.
  • a handle and in particular a bow-type handle 24 is arranged on an upper region of the rod 22. An operator can hold the surface cleaning machine 10 with one hand on this handle 24.
  • One or more operating elements are arranged on the handle 24.
  • a switch 26 is arranged on the handle 24.
  • the surface cleaning machine 10 can be switched on or off for a cleaning operation via the switch 26.
  • control of the surface cleaning machine 10 is such that, by actuating the switch 26, all necessary for the functioning Components (generation of a suction flow by a suction unit device, rotation of the cleaning roller 18, moistening of the cleaning roller 18) are actuated and, accordingly, switching off the switch 26 causes the actuation of these components to be switched off synchronously.
  • the rod 22 can be vertically displaceable (along the longitudinal axis 20) or fixed on the device body 12.
  • the device body 12 comprises a housing 28 in which components of the surface cleaning machine 10 are arranged in a protected manner.
  • a hook device 30 is arranged on the rod 12 between the housing 28 and the handle 24, to which a power cord can be fixed by being wrapped around the rod 22.
  • the surface cleaning machine 10 comprises a suction unit device designated as a whole by 32.
  • This suction unit device 32 is used to generate a suction flow in order to be able to perform suction on the cleaning roller 18.
  • the suction unit device 32 comprises a suction fan 34 which is arranged in the housing 28.
  • the suction fan 34 in turn has a motor and in particular an electric motor 36, which is also arranged in the housing 28.
  • a separator device 38 is assigned to the suction unit device 32. This separates solid from liquid components in a suction stream.
  • the separator device 38 is also arranged in the housing 28.
  • the separator device 38 is assigned a tank device 40 for dirty liquid. This sits removably on the housing 28.
  • a tank device 42 for cleaning fluid is also removably seated on the housing 28.
  • the cleaning liquid is in particular water or a mixture of water and cleaning agent.
  • the suction unit device 32 is in fluid communication with (at least) one suction channel 44, which is guided by the suction fan 34 on the device body 12 through the housing 28 to the cleaning head 14.
  • the suction channel 44 has a first region 46 which is positioned in the housing 28.
  • a junction 48 is located in the housing 28 on the first area 46, which branches off to a second area 50 and a third area 52 of the suction channel 44.
  • the first area 46 is thereby divided into two sub-channels.
  • the second area 50 and the third area 52 each lead to the cleaning head 14.
  • a suction port 54 which is positioned on the cleaning head 14, is assigned to the second area 50 and the third area 52.
  • a trim 56 is arranged on the cleaning roller 18 (cf. Figure 9 ).
  • This trim is, for example, a nonwoven material.
  • the suction mouth has a first mouth wall 58 and a second, spaced apart mouth wall 60 ( Figure 5 ).
  • the respective suction opening 54 is formed between the first opening wall 58 and the second opening wall 60.
  • the first mouth wall 58 lies above the second mouth wall 60 when the cleaning roller 18 is placed on the surface 16 to be cleaned.
  • the first opening wall 58 and / or the second opening wall 60 lie against the facing 56 of the cleaning roller 18 or protrude into the facing 56.
  • a corresponding mouth formation is in the not previously published international application PCT / EP2013 / 076445 of December 12, 2013 by the same applicant. Reference is made expressly and in full to this document.
  • a separate suction opening 54 can be assigned to the second area 50 and the third area 52, or a common suction opening can be provided for the second area 50 and the third area 52 of the suction channel 44. This one suction opening 54 then has two suction points over the second area 50 and the third area 52.
  • the suction unit device 32 can also be designed without branches and comprise several (in particular two) suction channels (two first regions 46) which are arranged in the housing 28. These then continue into the second area 50 or the third area 52.
  • the cleaning head 14 is held on the device body 12 via a joint 62 so as to be pivotable about a pivot axis 64 ( Figure 2 , Figure 4 ).
  • the pivot axis 64 lies transversely to the longitudinal axis 20 of the device body 12. It lies in particular at an acute angle 66 ( Figure 2 ) to the longitudinal axis 20.
  • the acute angle 66 is in particular in the range between 15 ° and 35 °. In one embodiment, the acute angle 66 is approximately 25 °.
  • the pivot axis 64 lies transversely and in particular perpendicular to an axis of rotation 68 of the cleaning roller 18.
  • the cleaning roller 18 has a longitudinal axis 70.
  • the longitudinal axis 70 is in particular coaxial with the axis of rotation 68.
  • the swivel joint comprises an inner sleeve 72 (see. For example Figure 4 ), which is arranged on the device body 12 at the acute angle 66 to the longitudinal axis 20 in accordance with the orientation of the pivot axis 64.
  • the cleaning head 14 has an outer sleeve 74 which sits on the inner sleeve 72.
  • a corresponding locking device ensures that the outer sleeve 74 cannot be displaced with respect to the inner sleeve 72 in the direction of the pivot axis 64.
  • the inner sleeve 72 has a cylindrical outer contour.
  • the outer sleeve 74 has a cylindrical inner contour.
  • the joint 62 is designed as a sliding joint via the rotatable mounting of the outer sleeve 74 on the inner sleeve 72.
  • pivotability through a full 360 ° angle can be provided.
  • the pivotability is limited, for example, to a range of ⁇ 45 ° or ⁇ 90 °.
  • a line for the areas 50, 52 between the device body 12 and the cleaning head 14 is designed to be correspondingly elastic in order to enable the cleaning head 14 to pivot (in particular in a limited pivoting range) at the joint 62.
  • a drive device 76 is provided for the rotating drive of the cleaning roller 18.
  • the drive device 76 comprises a drive motor 78.
  • This drive motor 78 is in particular an electric motor.
  • the drive motor 78 is positioned in the inner sleeve 72 of the joint 62.
  • the drive motor 78 has a motor shaft 80.
  • the motor shaft 80 has a drive axis 82.
  • the drive axis 82 is parallel and in particular coaxial with the pivot axis 64.
  • the drive motor 78 is firmly seated in the inner sleeve 72 on the device body 12. It is positioned at the transition from the device body 12 to the cleaning head 14, namely on the joint 62. It is housed in a space-saving manner and is located in the vicinity of the cleaning head 14 in relation to a focus of the surface cleaning machine 10.
  • the drive motor 78 is supplied with electrical energy, for example via mains current.
  • the drive axis 82 of the drive motor 78 and the axis of rotation 68 of the cleaning roller 18 are oriented transversely to one another and in particular oriented perpendicular to one another.
  • a transmission device 84 is provided for the transmission of torque from the drive device 76 to the cleaning roller 18.
  • the transmission device 84 comprises a speed reducer 86.
  • the speed reducer 86 is used to reduce a speed compared to the speed of the motor shaft 80.
  • the drive motor 78 is in particular a standard electric motor, which, for example, has a speed in the order of magnitude of Has 7000 revolutions per minute.
  • the speed reducer 86 ensures that the speed is reduced to approximately 400 revolutions per minute, for example.
  • the speed reducer 86 is in particular arranged directly on the drive motor 78, i. H. arranged next to it. It can still be arranged in the inner sleeve 72 or already on the cleaning head 14.
  • the speed reducer 86 is designed as a planetary gear.
  • the gear mechanism 84 also has an angular gear 88.
  • This angular gear 88 ensures a torque deflection in order to bring about a drive of the cleaning roller 18 with the axis of rotation 68 transverse to the drive axis 82 of the drive motor 78.
  • the angular gear 88 is in particular connected downstream of the speed reducer 86.
  • the angular gear 88 has one or more gearwheels which are non-rotatably coupled to a corresponding shaft of the speed reducer 86. These act on a bevel gear for angular conversion.
  • the cleaning head 14 has a first end face 90 and an opposite second end face 92 (see for example Figure 10 ). Between the first end 90 and the second end 92 a housing 94 of a cleaning roller holder 96 extends. This housing 94 partially surrounds a cleaning roller 18 held on it in the form of a half-shell, the encompassing being such that the cleaning roller 18 with a significant proportion for a cleaning process protrudes.
  • a sweeping element 98 is rotatably mounted on the housing 94 of the cleaning roller holder 96, this sweeping element 98 serving to sweep in coarse dirt to be carried along by the cleaning roller 18.
  • a cleaning head 14 with a corresponding sweeping element 98 is in the German patent application No. 10 2014 114 776.6 of October 13, 2014 by the same applicant. Reference is made expressly and in full to this document.
  • a drive element 102 is arranged in a central region 100 of the cleaning roller holder 96 between the first end face 90 and the second end face 92. This drive element 102 is connected to the drive device 76 in a torque-effective manner.
  • the drive element 102 is coupled to the angular gear 88 in a torque-effective manner via a belt 104.
  • the drive element 102 is spaced apart from the angular gear 88.
  • the belt 104 bridges this distance and causes the drive element to be driven with rotation about the axis of rotation 68.
  • a first pin 106 is arranged on the drive element 102 in a rotationally fixed manner towards the first end face 90.
  • a second pin 108 is arranged non-rotatably towards the second end face 92.
  • the cleaning roller 18 (for example Figure 9 ) is designed in two parts with a first part 110, which is non-rotatably seated on the first pin 106, and a second part 112 which is seated in a rotationally fixed manner on the second pin 108.
  • the first part 110 points to the first end face 90.
  • the second part 112 points towards the second end face 92.
  • a gap 114 is formed between the first part 110 and the second part 112. This gap 114 is relatively narrow and has a very much smaller width than a length of the cleaning roller 18 in the longitudinal axis 20.
  • the belt 104 is guided in the gap 114.
  • the belt 104 is set back with respect to an outside of the cleaning roller 18 also with respect to a position in which the facing 56 is compressed.
  • the surface cleaning machine 10 comprises a moistening device 116 for the cleaning roller 18 (in particular Figures 6 to 8 ).
  • the humidifying device comprises (at least) one pressure-controlled switch 118.
  • This pressure-controlled switch 118 is movable. (In the Figures 7 and 8th this is indicated by the double arrow 120.)
  • the pressure-controlled switch 118 comprises a movable membrane 122 on which, for example, a blocking element 124 is seated in one piece.
  • the blocking element 124 is also movable via the mobility of the membrane 122.
  • the membrane 122 has a first surface 126.
  • This first area 126 is in pressure-effective connection with the suction channel 44 and thereby with the second area 50 or the third area 52.
  • the pressure prevailing in the second area 50 (or the third area 52) is applied to the first area 126. In a cleaning operation of the surface cleaning machine 10, this pressure is a negative pressure with respect to the outer space 128 outside the surface cleaning machine 10 due to the suction flow.
  • the membrane 122 Opposite the first surface 126, the membrane 122 has a second surface 130.
  • the membrane 122 is in fluid communication with a collecting space 132.
  • the collecting space 132 can receive cleaning fluid.
  • the collecting space 132 is in fluid communication with the tank device 42 for cleaning liquid via a line 134.
  • the line 134 is led from the tank device 42 through the device body 12 to the cleaning head 14. It is designed so flexibly that it does not hinder pivotability (in particular within a finite pivoting range) of the cleaning head 14 on the device body 12 about the joint 62.
  • FIG. 9 A plurality of pressure-controlled switches 118 are arranged on the cleaning head 14.
  • the cleaning head 14 comprises two pressure-controlled switches 118.
  • One pressure-controlled switch 18 is connected to the second area 50 in a pressure-effective manner and a further pressure-controlled switch 118 is connected to the third area 52 in a pressure-effective manner.
  • the line 134 leads at a connection 136 (which is in particular a T-piece) into a distribution line 138.
  • the distribution line 138 in turn opens at a first connection point 140 and at a second connection point 142 into the housing 94
  • An associated pressure-controlled switch 118 is arranged in each case on the second connection point 142.
  • the distribution line 138 forms the collecting space 132.
  • a shut-off valve 139 is arranged on the line 134 between the distributor line 138 and the tank device 42. This can in particular be operated manually. A fluid-active connection between the tank device 42 and a fluid inlet of a pressure-controlled switch 118 can be blocked by the blocking valve 139.
  • more than two pressure-controlled switches 118 with corresponding connection points and collecting spaces can also be provided, wherein a collecting space can also be assigned to several switches 118, or only a single pressure-controlled switch 118 with only one collecting space 132 can be provided.
  • the collecting space 132 is designed in cooperation with the pressure-controlled switch 118 in such a way that cleaning fluid is constantly present in the collecting space 132 (if the shut-off valve 139 is open).
  • the second surface 130 points into a space 144 which is in pressure-effective connection with the outer space 128.
  • An openable and closable fluid path 146 is formed between the collecting space 132 and the space 144. Depending on the position of the pressure-controlled switch 118, liquid can flow from the collecting space 132 into the space 144. Depending on the position of the blocking element 124, this fluid path 146 is blocked or opened.
  • a wall 148 is arranged opposite the blocking element 124 and has a contact surface 150 for the blocking element 124.
  • the blocking element 124 rests against the contact surface 150 and the fluid path 146 is blocked; the corresponding collecting space 132 and the space 144 are fluidically separated.
  • a corresponding negative pressure is applied to the first surface 126, which causes the blocking element 124 to lift off causes the contact surface 150 and holds the locking element 124 in this raised position.
  • the lifted position is an open position of the pressure-controlled switch 118.
  • the pressure-controlled switch 118 When the blocking element 124 rests against the contact surface 150, the pressure-controlled switch 118 is in a closed position with the fluid path 146 blocked.
  • the pressure-controlled switch 118 has a reset device which, when the pressure difference between the first surface 126 and the second surface 130 is below the threshold value, causes the locking element 124 to be reset to the closed position with the locking element 124 in contact with the contact surface 150.
  • the resetting device is formed by means of the inherent elasticity of the membrane 122.
  • the transition from the open position to the closed position or vice versa of the pressure-controlled switch 118 is directly linked to the operation of the suction fan 34; the negative pressure required to move and hold the membrane 122 in the open position is brought about by the suction flow generated by the suction unit device 32.
  • a distributor 152 is assigned to the pressure-controlled switch 118 and in particular to a plurality of pressure-controlled switches 118.
  • the distributor 152 serves to distribute cleaning fluid to the cleaning roller 18 and in particular to apply fluid to it over the length of the cleaning roller 18.
  • the distributor 152 is designed as a channel 154.
  • the channel 154 receives cleaning liquid up to a certain level. It can collect cleaning fluid.
  • the channel 154 extends parallel to the longitudinal axis 70 of the cleaning roller 18 and thus parallel to the axis of rotation 68.
  • the channel 154 is assigned an outlet opening device 156, which extends in particular over the entire length of the cleaning roller 18.
  • the channel 154 is designed in the shape of a half-shell. As a result, it has a discharge opening 158 for cleaning fluid over its entire length.
  • the manifold 152 with the channel 154 can collect cleaning liquid. This creates an intermediate buffer for cleaning fluid. Cleaning liquid does not necessarily flow directly to the cleaning roller 18 on the fluid path 146, but is correspondingly collected in the channel 154.
  • FIG Figure 1 An angular position of the surface cleaning machine 10 in relation to the surface 16 to be cleaned is shown in FIG Figure 1 indicated by reference numeral 160.
  • This angular position 160 can vary.
  • the surface cleaning machine 10 is supported with the cleaning roller 18 on the surface 16 to be cleaned.
  • a support area 162 of the cleaning roller 18 on the surface 16 to be cleaned forms a pivot axis for a variation of the angular position 160.
  • the channel 154 is arranged in such a way that, when a certain pivoting angle of the angular position 160 is reached, cleaning liquid can flow from the channel 154 directly to the cleaning roller 18 ( Figure 8 ).
  • FIG. 7 a position of the distributor 152 in relation to the direction of gravity g is shown, in which the outlet opening device 156 is at a higher gravitational potential than the channel 154.
  • cleaning liquid can flow directly from the channel 154 of the cleaning roller 18 and apply cleaning liquid to it.
  • the application of liquid to the cleaning roller 18 is controlled by gravity via the angular position 160.
  • the angular position 160 is in turn set by manual operation of the operator.
  • cleaning agent is applied to the cleaning roller 18 or not. This is determined by the height distance in the direction of gravity between the outlet opening device 156 and the channel 154.
  • one or more gap channels 162 are arranged between the space or spaces 144 and the outlet opening device 156. In order to be able to reach the cleaning roller 18, cleaning fluid from the channel 154 must pass through a corresponding gap channel 162.
  • a gap channel 162 is designed in particular with dimensions such that a capillary effect occurs for the flow of cleaning liquid. Such a capillary effect supports a uniform distribution of cleaning liquid over the entire length of the cleaning roller 18. In particular, the gap channel 162 extends essentially over the entire length of the cleaning roller 18.
  • a facing 56 of the cleaning roller 18 lies or lies almost with individual fibers at the outlet opening device 156 of the gap channel 162 Rotation of the cleaning roller 18 on. As a result, a (slight) negative pressure is generated at the distributor 152, which entrains cleaning fluid. Furthermore, cleaning fluid is drawn from the gap channel 162 by the capillary action of fibers of the filling. This ensures a uniform application of cleaning fluid to the cleaning roller 18.
  • the supply of cleaning fluid to the cleaning roller 18 is designed to be pump-free.
  • the pressure-controlled switch 118 is directly coupled to a suction flow effect of the suction fan 34.
  • no additional control, and in particular electronic control, is necessary for moistening the cleaning roller 18.
  • no solenoid valves or the like are provided.
  • the surface cleaning machine 10 functions as follows: For a cleaning operation, the surface cleaning machine 10 is supported via the cleaning roller 18 on the surface 16 to be cleaned. An operator stands on the surface 16 to be cleaned behind the surface cleaning machine 10 and holds it on the handle 24, for example with one hand.
  • the operator can perform a forward thrust in the forward direction 164.
  • the suction fan 34 During a cleaning operation, the suction fan 34 generates a suction flow, which in the suction channel 44 and thus in the areas 46, 50 and 52 creates a negative pressure with respect to the outer space 128.
  • the drive motor 78 generates a torque which is transmitted to the cleaning roller 18 via the gear mechanism 84. This is driven to rotate. In particular, it is clockwise (in Figure 1 indicated by the reference numeral 166) driven in rotation.
  • the cleaning roller 18 has a peripheral speed in the range between 0.9 m / s and 1.2 m / s and in particular with a peripheral speed greater than 0.92 m / s and in particular less than 1.15 m / s is driven.
  • It is driven, for example, with a peripheral speed in the range between 0.95 m / s and 1.05 m / s. For example, it is driven at a peripheral speed of approx. 1 m / s.
  • the circumferential speed can be adjusted by an operator.
  • the drive device 76 defines the peripheral speed.
  • the cleaning roller 18 has a facing 56 which is compressible.
  • the trim 56 is made in particular from a textile material.
  • the circumferential speed does not relate to a maximum diameter of the cleaning roller 18, but to a diameter when the facing 56 is compressed, for example by the weight of the surface cleaning machine 10.
  • Too low a circumferential speed causes the surface cleaning machine to simply roll over the surface 16 to be cleaned without an adequate cleaning effect. If the circumferential speed is too high, cleaning liquid will splash.
  • the circumferential speeds mentioned are designed in particular for a working speed (forward speed) of the operator of approx. 0.9 m / s.
  • the cleaning roller 18 is moistened with cleaning agent from the tank device 42 by the moistening device 116.
  • This application of liquid is free of pumps and, in particular, free of solenoid valves.
  • cleaning liquid flows out of the tank device 42 to the collecting chamber or chambers 132.
  • the tank device In an embodiment in which the tank device is located on the cleaning head, the tank device itself can form a collecting chamber.
  • the pressure-effective connection to the pressure-controlled switch (s) 118 opens the fluid path (s) 146. Cleaning fluid can then collect in the distributor 152 and act on the cleaning roller 18 from there . A uniform application over essentially the entire length of the cleaning roller 18 along the longitudinal axis 70 is ensured.
  • the uniform distribution can be supported by capillary action by means of one or more gap channels 162.
  • an operator can set whether or not cleaning fluid flows from the distributor 152 to the cleaning roller 18.
  • This setting is controlled by gravity, depending on whether the outlet opening device 156 is positioned above or below the channel 154 in relation to the direction of gravity, capillary forces possibly being present via the gap channel 162 and a negative pressure effect due to fibers of the facing 56 on the outlet opening device 156.
  • Dirt on the surface 16 to be cleaned is softened by cleaning fluid and can then be taken along via the cleaning roller 18.
  • a suction by means of the suction flow produced takes place via the suction opening 54 or corresponding suction openings.
  • the separator device 38 there is a separation into solid dirt particles and liquid. Dirty liquid is collected in the tank device 40.
  • the joint 62 can also be used, for example, for machine corner cleaning or edge cleaning.
  • the device body 12 is pivotable relative to the cleaning head 14 about the pivot axis 64 in the pivoting range.
  • the relatively heavy drive motor 78 is arranged far down in the vicinity of the cleaning head 14 in relation to a normal operating mode and is at least partially positioned on the joint 62 in a space-saving manner. It can be positioned at least partially outside the cleaning head 14 (at a distance from the cleaning roller 18).
  • the sweeping element 98 can be used to sweep coarse dirt, which can then be carried along by the cleaning roller 18.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Description

Die Erfindung betrifft eine Flächen-Reinigungsmaschine, wie z.B. in der GB2411823 beschrieben, umfassend mindestens eine Reinigungswalze, eine Antriebseinrichtung zum rotatorischen Antrieb der mindestens einen Reinigungswalze, eine Befeuchtungseinrichtung zur Beaufschlagung der mindestens einen Reinigungswalze mit Reinigungsflüssigkeit, und eine Saugaggregateinrichtung zur Erzeugung eines Saugstroms, welche mit mindestens einem Saugkanal und mindestens einer Saugmündung, die der mindestens einen Reinigungswalze zugeordnet ist, in fluidwirksamer Verbindung steht.The invention relates to a surface cleaning machine, such as in the GB2411823 described, comprising at least one cleaning roller, a drive device for rotationally driving the at least one cleaning roller, a moistening device for applying cleaning fluid to the at least one cleaning roller, and a suction unit device for generating a suction flow, which has at least one suction channel and at least one suction port that of the at least one Cleaning roller is assigned, is in fluid communication.

Durch eine solche Flächen-Reinigungsmaschine lassen sich gute Reinigungsergebnisse erzielen. Durch eine Befeuchtung der mindestens einen Reinigungswalze kann Schmutz an der zu reinigenden Fläche angefeuchtet werden und so besser gelöst werden. Gelöster Schmutz lässt sich mit der rotierenden Reinigungswalze mitführen und absaugen.Good cleaning results can be achieved with such a surface cleaning machine. By moistening the at least one cleaning roller, dirt on the surface to be cleaned can be moistened and thus better loosened. Loosened dirt can be carried along with the rotating cleaning roller and vacuumed off.

Aus der WO 2013/027140 A1 ist eine Reinigungsvorrichtung zum Reinigen einer Oberfläche bekannt, welche eine rotierbare Bürste umfasst. Es ist ferner ein Gummiwischerelement vorgesehen, welches beabstandet zu der Bürste ist und an einer Unterseite eines Düsengehäuses befestigt ist.From the WO 2013/027140 A1 a cleaning device for cleaning a surface is known which comprises a rotatable brush. A rubber wiper element is also provided, which is spaced apart from the brush and is fastened to an underside of a nozzle housing.

Aus der WO 2013/027164 A1 ist ebenfalls eine Reinigungsvorrichtung mit einer rotierbaren Bürste und einem einzigen Gummiwischerelement bekannt. Aus der EP 2 177 128 A1 ist eine Vorrichtung zur Fluidverteilung an einer Bürste bekannt.From the WO 2013/027164 A1 a cleaning device with a rotatable brush and a single rubber wiper element is also known. From the EP 2 177 128 A1 a device for distributing fluid on a brush is known.

Aus der DE 41 17 157 A1 ist ein Verfahren zum Säubern bzw. Reinigen einer vorzugsweise glatten Fläche bekannt, bei dem die zu reinigende Fläche mit einem im Wesentlichen lappenartigen Wischelement unter Aufnahme des Schmutzes durch das Wischelement abgewischt wird und dann das verschmutzte Wischelement angefeuchtet wird und danach der Schmutz von dem Wischelement abgesaugt wird.From the DE 41 17 157 A1 a method for cleaning a preferably smooth surface is known in which the surface to be cleaned is wiped with a substantially flap-like wiping element while the mopping element absorbs the dirt and then the dirty mopping element is moistened and the dirt is then sucked off the mopping element will.

Aus der WO 2010/140967 A1 ist ein Verfahren zum Reinigen einer verschmutzten Oberfläche bekannt.From the WO 2010/140967 A1 a method for cleaning a soiled surface is known.

Aus der CH 607 578 ist eine an eine Wasserleitung anschließbare Bürstenvorrichtung bekannt.From the CH 607 578 a brush device that can be connected to a water pipe is known.

Aus der EP 0 186 005 A1 ist ein mit Laufrädern versehenes Bürstensaugmundstück bekannt.From the EP 0 186 005 A1 a brush suction nozzle provided with running wheels is known.

Aus der FR 2 797 895 ist eine Bürste bekannt.From the FR 2 797 895 a brush is known.

Aus der US 2002/0194692 A1 ist ein Verfahren zur mechanischen Schmutzentfernung von einer Oberfläche bekannt.From the US 2002/0194692 A1 a method for mechanically removing dirt from a surface is known.

Aus der DE 1 503 858 ist eine Vorrichtung zur Reinigung und/oder zur Pflege von textilem Bodenbelag wie Teppichen unter Auftragen flüssiger Reinigungs-oder Pflegemittel bekannt, mit einem über die zu behandelnde Fläche hin- und herbewegbaren Behandlungskopf. Es sind Mittel zur Auftragung und allenfalls Verteilung der Flüssigkeit sowie allfällige mechanisch wirkende Reinigungsorgane im Behandlungskopf im Einflussbereich eines die aufgetragene Flüssigkeit nach Beendigung der Reinigungsfunktion vom Behandlungsgut wieder absaugenden Saugluftstroms angeordnet.From the DE 1 503 858 a device for cleaning and / or caring for textile floor coverings such as carpets with the application of liquid cleaning or care agents is known, with a treatment head that can be moved back and forth over the surface to be treated. Means for applying and possibly distributing the liquid as well as any mechanically acting cleaning organs are arranged in the treatment head in the area of influence of a suction air flow which sucks the applied liquid from the material to be treated again after the cleaning function has ended.

Der Erfindung liegt die Aufgabe zugrunde, eine Flächen-Reinigungsmaschine der eingangs genannten Art bereitzustellen, welche optimierte Betriebseigenschaften aufweist.The invention is based on the object of providing a surface cleaning machine of the type mentioned at the beginning, which has optimized operating properties.

Diese Aufgabe wird bei der eingangs genannten Flächen-Reinigungsmaschine erfindungsgemäß dadurch gelöst, dass die Befeuchtungseinrichtung mindestens einen druckgesteuerten Schalter umfasst, welcher in einer geöffneten Stellung einen Fluidweg für Reinigungsflüssigkeit zu der mindestens einen Reinigungswalze freigibt und in einer geschlossenen Stellung den Fluidweg sperrt, und dass der mindestens eine druckgesteuerte Schalter an den mindestens einen Saugkanal druckwirksam gekoppelt ist, wobei bei einer durch einen Saugstrom in dem mindestens einen Saugkanal bewirkten Unterdruckbeaufschlagung der mindestens eine druckgesteuerte Schalter in die geöffnete Stellung geht und/oder die geöffnete Stellung hält.This object is achieved according to the invention in the surface cleaning machine mentioned at the outset in that the moistening device comprises at least one pressure-controlled switch which, in an open position, releases a fluid path for cleaning fluid to the at least one cleaning roller and in a closed position blocks the fluid path, and in that the at least one pressure-controlled switch is coupled to the at least one suction channel in a pressure-effective manner, with the at least one pressure-controlled switch moving into the open position and / or holding the open position when a vacuum is applied to the at least one suction channel by a suction flow.

Bei der erfindungsgemäßen Lösung ist eine Fluidbeaufschlagung der mindestens einen Reinigungswalze an einen Saugbetrieb gekoppelt. Ob überhaupt eine Beaufschlagung der mindestens einen Reinigungswalze mit Reinigungsflüssigkeit erfolgen kann oder nicht, hängt von einem Saugbetrieb der Saugaggregateinrichtung ab.In the solution according to the invention, the application of fluid to the at least one cleaning roller is coupled to a suction operation. Whether or not the at least one cleaning roller can be acted upon with cleaning fluid depends on a suction operation of the suction unit device.

Üblicherweise wird die Flächen-Reinigungsmaschine in einem Reinigungsbetrieb so betrieben, dass eine Absaugung erfolgt. Dies bedeutet dann, dass grundsätzlich in diesem Betriebsmodus eine Beaufschlagung der mindestens einen Reinigungswalze mit Reinigungsflüssigkeit möglich ist.The surface cleaning machine is usually operated in a cleaning operation in such a way that suction takes place. This then means that, in principle, in this operating mode it is possible to apply cleaning fluid to the at least one cleaning roller.

Zu dieser Beaufschlagung mit Reinigungsflüssigkeit ist keine zusätzliche übergeordnete Steuerung notwendig. Ferner lässt sich die Beaufschlagung pumpenfrei durchführen. Es sind keine Magnetventile oder dergleichen notwendig. Die Flächen-Reinigungsmaschine lässt sich dadurch auf konstruktiv einfache Weise ausbilden. Es entsteht kein Energieverbrauch für Pumpen, Magnetventile usw.No additional superordinate control is necessary for this application of cleaning fluid. Furthermore, the application can be carried out without a pump. No solenoid valves or the like are necessary. The surface cleaning machine can thus be designed in a structurally simple manner. There is no energy consumption for pumps, solenoid valves, etc.

Es können grundsätzlich in Abhängigkeit von der vorgesehenen Anwendung ein oder mehrere druckgesteuerte Schalter vorgesehen sein.In principle, depending on the intended application, one or more pressure-controlled switches can be provided.

Günstig ist es, wenn mindestens ein Sammelraum für Reinigungsflüssigkeit vorgesehen ist, wobei der durch den mindestens einen druckgesteuerten Schalter bezüglich Öffnen und Schließen steuerbare Fluidweg zwischen dem mindestens einen Sammelraum und der mindestens einen Reinigungswalze liegt. In den Sammelraum lässt sich Reinigungsflüssigkeit insbesondere aus einer Tankeinrichtung für Reinigungsflüssigkeit einkoppeln. Es lässt sich dadurch erreichen, dass ständig Reinigungsflüssigkeit in dem Sammelraum ansteht und bei Öffnen des druckgesteuerten Schalters der mindestens einen Reinigungswalze zugeführt werden kann. Der Sammelraum kann beispielsweise durch den Innenraum einer (Reinigungsflüssigkeits-)Leitung gebildet sein, die zu dem druckgesteuerten Schalter führt, oder durch eine Kammer gebildet sein, an welcher der Schalter angeordnet ist (und in welche eine Leitung führt).It is favorable if at least one collecting space for cleaning fluid is provided, the fluid path controllable with respect to opening and closing by the at least one pressure-controlled switch being located between the at least one collecting space and the at least one cleaning roller. Cleaning liquid can be coupled into the collecting space, in particular from a tank device for cleaning liquid. It can thereby be achieved that cleaning fluid is constantly present in the collecting space and can be fed to the at least one cleaning roller when the pressure-controlled switch is opened. The collecting space can be formed, for example, by the interior of a (cleaning liquid) line which leads to the pressure-controlled switch, or it can be formed by a chamber on which the switch is arranged (and into which a line leads).

Ganz besonders vorteilhaft ist es, wenn eine Tankeinrichtung für Reinigungsflüssigkeit vorgesehen ist, welche in fluidwirksamer Verbindung mit dem Fluidweg steht und insbesondere in fluidwirksamer Verbindung mit dem mindestens einen Sammelraum für Reinigungsflüssigkeit steht. Dadurch lässt sich, solange noch Reinigungsflüssigkeit sich in der Tankeinrichtung befindet, ein Nachschub an Reinigungsflüssigkeit gewährleisten.It is particularly advantageous if a tank device for cleaning liquid is provided which is in fluid connection with the fluid path and in particular is in fluid connection with the at least one collecting space for cleaning liquid. As a result, as long as there is still cleaning liquid in the tank device, a replenishment of cleaning liquid can be ensured.

Aus den oben erwähnten Gründen ist es vorteilhaft, wenn Reinigungsflüssigkeit aus der Tankeinrichtung ständig an dem mindestens einen Sammelraum ansteht. Es kann dabei ein (Haupt-)Sperrventil vorgesehen sein, durch welches das ständige Anstehen schaltbar ist. Dadurch kann beispielsweise ein Reinigungsbetrieb ohne Reinigungsflüssigkeitsbeaufschlagung eingestellt werden.For the reasons mentioned above, it is advantageous if cleaning liquid from the tank device is constantly present in the at least one collecting space. A (main) shut-off valve can be provided, through which the constant queuing can be switched. In this way, for example, a cleaning operation can be set without the application of cleaning fluid.

Bei einer konstruktiv einfachen Ausführungsform ist die Tankeinrichtung in einem Normalbetriebsmodus der Flächen-Reinigungsmaschine bezogen auf die Schwerkraftrichtung oberhalb der mindestens einen Reinigungswalze positioniert. Es kann dann Reinigungsflüssigkeit pumpenfrei schwerkraftgetrieben von der Tankeinrichtung zu der mindestens einen Reinigungswalze gefördert werden. Der Normalbetriebsmodus ist ein Modus, bei dem die Flächen-Reinigungsmaschine über die mindestens eine Reinigungswalze an der zu reinigenden Fläche aufsteht und ein Bediener ebenfalls auf der zu reinigenden Fläche aufsteht und dabei ein oberes Ende der Flächen-Reinigungsmaschine, welche dem Reinigungskopf abgewandt ist, bezogen auf die Schwerkraftrichtung oberhalb des Reinigungskopfes positioniert ist.In a structurally simple embodiment, the tank device is in a normal operating mode of the surface cleaning machine based on the Direction of gravity positioned above the at least one cleaning roller. Cleaning liquid can then be conveyed from the tank device to the at least one cleaning roller in a pump-free manner, driven by gravity. The normal operating mode is a mode in which the surface cleaning machine stands up over the at least one cleaning roller on the surface to be cleaned and an operator also stands up on the surface to be cleaned and refers to an upper end of the surface cleaning machine, which is facing away from the cleaning head is positioned in the direction of gravity above the cleaning head.

Ganz besonders vorteilhaft ist es, wenn der mindestens eine druckgesteuerte Schalter eine erste Fläche aufweist, welche in druckwirksamer Verbindung mit dem mindestens einen Saugkanal steht, und eine zweite Fläche aufweist, welche in druckwirksamer Verbindung mit dem Außenraum steht, wobei eine Druckdifferenz zwischen der ersten Fläche und der zweiten Fläche die Stellung des mindestens einen druckgesteuerten Schalters bestimmt. Es lässt sich dadurch allein über den Druck an der ersten Fläche steuern, ob der mindestens eine druckgesteuerte Schalter offen oder geschlossen ist. Ein entsprechender druckgesteuerter Schalter lässt sich auf einfache Weise ausbilden.It is particularly advantageous if the at least one pressure-controlled switch has a first surface, which is in pressure-effective connection with the at least one suction channel, and a second surface, which is in pressure-effective connection with the outside space, with a pressure difference between the first surface and the second surface determines the position of the at least one pressure controlled switch. It can thereby be controlled solely via the pressure on the first surface whether the at least one pressure-controlled switch is open or closed. A corresponding pressure-controlled switch can be designed in a simple manner.

Insbesondere bewirkt eine Unterdruckbeaufschlagung des mindestens einen Saugkanals eine Druckdifferenz zwischen der ersten Fläche und der zweiten Fläche, welche den mindestens einen druckgesteuerten Schalter in die geöffnete Stellung bringt und/oder in der geöffneten Stellung hält. Dadurch ist eine direkte Verknüpfung einer Beaufschlagung der mindestens einen Reinigungswalze mit Reinigungsflüssigkeit an einen Saugbetrieb realisiert.In particular, the application of negative pressure to the at least one suction channel causes a pressure difference between the first surface and the second surface, which brings the at least one pressure-controlled switch into the open position and / or holds it in the open position. This results in a direct link between the application of cleaning fluid to the at least one cleaning roller and a suction operation.

Günstigerweise weist der mindestens eine druckgesteuerte Schalter eine Rückstelleinrichtung auf, welche bei Unterschreiten einer Mindestschwelle der Druckdifferenz eine Rückstellung in die geschlossene Stellung bewirkt und/oder die geschlossene Stellung hält. Dadurch lässt sich auf automatisierte Weise, wenn eine Unterdruckbeaufschlagung an der ersten Fläche wegfällt, eine Rückstellung mit Sperrung des Fluidwegs erreichen.The at least one pressure-controlled switch advantageously has a reset device which, when the pressure difference falls below a minimum threshold, effects a reset to the closed position and / or maintains the closed position. In this way, if the application of negative pressure to the first surface is omitted, a return with blocking of the fluid path can be achieved in an automated manner.

Grundsätzlich kann die Rückstelleinrichtung über eine elastische Einrichtung gebildet werden, welche beispielsweise zusätzliche Federn oder dergleichen umfasst. Bei einer konstruktiv einfachen Ausführungsform ist die Rückstelleinrichtung durch eine Eigenelastizität des mindestens einen druckgesteuerten Schalters gebildet.In principle, the resetting device can be formed by an elastic device which, for example, includes additional springs or the like. In a structurally simple embodiment, the resetting device is formed by an inherent elasticity of the at least one pressure-controlled switch.

Bei einer vorteilhaften Ausführungsform weist der mindestens eine druckgesteuerte Schalter eine bewegliche Membran auf. Je nach der wirkenden Druckdifferenz kann sich die Membran bewegen und einen Übergang von der geöffneten in die geschlossene Stellung oder umgekehrt bewirken.In an advantageous embodiment, the at least one pressure-controlled switch has a movable membrane. Depending on the pressure difference acting, the membrane can move and cause a transition from the open to the closed position or vice versa.

Ferner ist es konstruktiv günstig, wenn der mindestens eine druckgesteuerte Schalter mindestens ein bewegliches Sperrelement für den Fluidweg aufweist, welches insbesondere an einer beweglichen Membran angeordnet ist. Es lässt sich dadurch auf einfache Weise eine Sperrung bzw. Öffnung erreichen. Ferner lässt sich durch das Vorsehen einer Membran mit einer Eigenelastizität auf konstruktiv einfache Weise eine Rückstelleinrichtung realisieren.Furthermore, it is structurally favorable if the at least one pressure-controlled switch has at least one movable blocking element for the fluid path, which is arranged in particular on a movable membrane. Blocking or opening can thereby be achieved in a simple manner. Furthermore, by providing a membrane with inherent elasticity, a restoring device can be implemented in a structurally simple manner.

Ganz besonders vorteilhaft ist es, wenn dem mindestens einen druckgesteuerten Schalter ein Verteiler für Reinigungsflüssigkeit an die mindestens eine Reinigungswalze nachgeordnet ist, welcher fluidwirksam mit dem Fluidweg verbunden ist. Über den Verteiler lässt sich eine gleichmäßige Beaufschlagung der mindestens einen Reinigungswalze mit Reinigungsflüssigkeit insbesondere über eine gesamte Länge der Reinigungswalze erreichen.It is particularly advantageous if the at least one pressure-controlled switch is followed by a distributor for cleaning fluid to the at least one cleaning roller, which distributor is fluidly connected to the fluid path. A uniform application of cleaning fluid to the at least one cleaning roller, in particular over an entire length of the cleaning roller, can be achieved via the distributor.

Bei einem Ausführungsbeispiel ist der Verteiler durch eine Rinne gebildet oder umfasst mindestens eine Rinne. Eine Rinne ist halbschalenförmig ausgebildet. Je nach Stellung der mindestens einen Rinne zu einer Auslassöffnungseinrichtung bezogen auf die Schwerkraftrichtung lässt sich bedienergesteuert und dabei schwerkraftgesteuert eine Reinigungsflüssigkeitsbeaufschlagung der mindestens einen Reinigungswalze erreichen oder nicht.In one embodiment, the distributor is formed by a channel or comprises at least one channel. A channel is designed in the shape of a half-shell. Depending on the position of the at least one channel relative to an outlet opening device in relation to the direction of gravity, an operator-controlled and gravity-controlled application of cleaning fluid to the at least one cleaning roller can be achieved or not.

Insbesondere erstreckt sich die mindestens eine Rinne mindestens näherungsweise parallel zu einer Längsachse der mindestens einen Reinigungswalze und/oder erstreckt sich mindestens näherungsweise parallel zu einer Rotationsachse der mindestens einen Reinigungswalze. Dadurch lässt sich auf einfache Weise eine gleichmäßige Flüssigkeitsbeaufschlagung erreichen.In particular, the at least one channel extends at least approximately parallel to a longitudinal axis of the at least one cleaning roller and / or extends at least approximately parallel to an axis of rotation of the at least one cleaning roller. In this way, a uniform application of liquid can be achieved in a simple manner.

Es ist ferner günstig, wenn die mindestens eine Rinne mit einer Auslassöffnungseinrichtung sich über mindestens 80 % einer Länge der mindestens einen Reinigungswalze und insbesondere über eine ganze Länge der mindestens einen Reinigungswalze erstreckt. Dadurch wird über die gesamte Länge der mindestens einen Reinigungswalze ein guter Reinigungseffekt erzielt.It is also favorable if the at least one channel with an outlet opening device extends over at least 80% of a length of the at least one cleaning roller and in particular over an entire length of the at least one cleaning roller. As a result, a good cleaning effect is achieved over the entire length of the at least one cleaning roller.

Die mindestens eine Rinne ist beispielsweise halbschalenförmig ausgebildet. Dadurch lässt sich auf einfache Weise ein Zwischenpuffer für Reinigungsflüssigkeit erreichen. Je nach Gravitationspotential der mindestens einen Rinne zu einer Auslassöffnungseinrichtung lässt sich bedienergesteuert eine Flüssigkeitsbeaufschlagung der mindestens einen Reinigungswalze erreichen oder nicht.The at least one channel is designed, for example, in the shape of a half-shell. In this way, an intermediate buffer for cleaning liquid can be achieved in a simple manner. Depending on the gravitational potential of the at least one channel to an outlet opening device, the at least one cleaning roller may or may not be exposed to liquid in an operator-controlled manner.

Günstig ist es, wenn der Verteiler eine Auslassöffnungseinrichtung aufweist, welche so angeordnet und ausgebildet ist, dass in Abhängigkeit einer Winkelposition des Verteilers zu der Schwerkraftrichtung Reinigungsflüssigkeit aus dem Verteiler zu der mindestens einen Reinigungswalze strömt oder nicht. Dadurch lässt sich schwerkraftgesteuert die Flüssigkeitsbeaufschlagung einstellen.It is favorable if the distributor has an outlet opening device which is arranged and designed in such a way that, depending on an angular position of the distributor in relation to the direction of gravity, cleaning fluid flows from the distributor to the at least one cleaning roller or not. In this way, the liquid admission can be adjusted under the control of gravity.

Insbesondere ist die Winkelposition des Verteilers zu der Schwerkraftrichtung durch eine Winkelposition einer Längsachse der Flächen-Reinigungsmaschine (und damit der gesamten Maschine) zu einer zu reinigenden Fläche bestimmt. Diese Winkelposition kann durch einen Bediener auf einfache Weise durch Heben oder Senken an einem Griff geändert werden.In particular, the angular position of the distributor in relation to the direction of gravity is determined by an angular position of a longitudinal axis of the surface cleaning machine (and thus of the entire machine) in relation to a surface to be cleaned. This angular position can easily be changed by an operator by raising or lowering a handle.

Insbesondere ist dann eine Befeuchtung der mindestens einen Reinigungswalze über den Verteiler schwerkraftgesteuert.In particular, moistening of the at least one cleaning roller is then controlled by gravity via the distributor.

Ganz besonders vorteilhaft ist es, wenn die Flächen-Reinigungsmaschine bezüglich einer Befeuchtung der mindestens einen Reinigungswalze durch die Befeuchtungseinrichtung pumpenfrei ausgebildet ist. Dadurch ergibt sich ein konstruktiv einfacher und platzsparender Aufbau. Es ist ferner kein zusätzlicher Energieverbraucher wie eine Pumpe notwendig.It is particularly advantageous if the surface cleaning machine is designed to be pump-free with regard to the moistening of the at least one cleaning roller by the moistening device. This results in a structurally simple and space-saving structure. Furthermore, no additional energy consumer such as a pump is necessary.

Bei einer Ausführungsform weist der Fluidweg mindestens einen Spaltkanal auf, welcher insbesondere so ausgebildet ist, dass ein Kapillareffekt für die Strömung von Reinigungsflüssigkeit auftritt. Insbesondere ist der Spaltkanal einem Verteiler nachgeschaltet. Es lässt sich dadurch eine gleichmäßige Flüssigkeitsbeaufschlagung der mindestens einen Reinigungswalze über ihre Länge erreichen. Der mindestens eine Spaltkanal ist vorzugsweise so dimensioniert, dass ein Kapillareffekt auch dann auftritt, wenn Reinigungsmittel in der Reinigungsflüssigkeit enthalten ist.In one embodiment, the fluid path has at least one gap channel, which is designed in particular in such a way that a capillary effect occurs for the flow of cleaning fluid. In particular, the gap channel is connected downstream of a distributor. A uniform application of liquid to the at least one cleaning roller over its length can thereby be achieved. The at least one gap channel is preferably dimensioned in such a way that a capillary effect also occurs when cleaning agent is contained in the cleaning liquid.

Aus dem gleichen Grund ist es günstig, wenn ein Besatz der mindestens einen Reinigungswalze an einer Austrittsöffnungseinrichtung des mindestens einen Spaltkanals anliegt oder nahezu anliegt. Textile Fasern des Besatzes der mindestens einen Reinigungswalze können temporär eine oder mehrere Öffnungen an der Austrittsöffnungseinrichtung abdecken und dabei einen Unterdruck erzeugen. Dies verbessert die Verteilung.For the same reason, it is advantageous if a set of the at least one cleaning roller is in contact with or almost in contact with an outlet opening device of the at least one gap channel. Textile fibers of the trim of the at least one cleaning roller can temporarily cover one or more openings on the outlet opening device and thereby generate a negative pressure. This improves the distribution.

Insbesondere ist ein Verteiler für Reinigungsflüssigkeit dem mindestens einen Spaltkanal bezogen auf eine Strömungsrichtung für Reinigungsflüssigkeit vorgeschaltet. Es lässt sich dadurch eine gleichmäßige Flüssigkeitsbeaufschlagung der mindestens einen Reinigungswalze über ihre Länge erreichen.In particular, a distributor for cleaning fluid is connected upstream of the at least one gap channel with respect to a direction of flow for cleaning fluid. A uniform application of liquid to the at least one cleaning roller over its length can thereby be achieved.

Insbesondere stützt sich in einem Reinigungsbetrieb die Flächen-Reinigungsmaschine über eine Reinigungswalze, welche rotatorisch angetrieben ist, auf der zu reinigenden Fläche ab. Der Bediener steht auf der zu reinigenden Fläche. Es ergibt sich dadurch ein optimierter Reinigungseffekt, wobei die entsprechende Flächen-Reinigungsmaschine mit relativ geringen Abmessungen platzsparend ausbildbar ist und auf konstruktiv einfache Weise realisiert werden kann.In particular, in a cleaning operation, the surface cleaning machine is supported on the surface to be cleaned via a cleaning roller which is driven in rotation. The operator stands on the to be cleaned Surface. This results in an optimized cleaning effect, with the corresponding surface cleaning machine being able to be designed in a space-saving manner with relatively small dimensions and being able to be implemented in a structurally simple manner.

Die nachfolgende Beschreibung bevorzugter Ausführungsformen dient im Zusammenhang mit den Zeichnungen der näheren Erläuterung der Erfindung. Es zeigen:

Figur 1
eine perspektivische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Flächen-Reinigungsmaschine;
Figur 2
eine Seitenansicht der Flächen-Reinigungsmaschine gemäß Figur 1;
Figur 3
eine Vorderansicht der Flächen-Reinigungsmaschine gemäß Figur 1;
Figur 4
eine Schnittansicht längs der Linie 4-4 gemäß Figur 3;
Figur 5
eine Schnittansicht längs den Linien 5-5 gemäß Figur 3;
Figur 6
eine vergrößerte Darstellung eines vorderen Bereichs eine Reinigungskopfes der Flächen-Reinigungsmaschine gemäß Figur 1 in einer seitlichen Schnittansicht längs der Linie 6-6 gemäß Figur 3;
Figur 7
eine vergrößerte Darstellung des Bereichs A gemäß Figur 6 in einer ersten Stellung;
Figur 8
eine ähnliche Darstellung wie Figur 7 in einer anderen Stellung bezogen auf die Gravitationsrichtung;
Figur 9
eine perspektivische Teilansicht eines Reinigungskopfes der Flächen-Reinigungsmaschine gemäß Figur 1; und
Figur 10
eine weitere Ansicht des Reinigungskopfes ohne Reinigungswalze.
The following description of preferred embodiments serves to explain the invention in greater detail in conjunction with the drawings. Show it:
Figure 1
a perspective view of an embodiment of a surface cleaning machine according to the invention;
Figure 2
a side view of the surface cleaning machine according to Figure 1 ;
Figure 3
a front view of the surface cleaning machine according to FIG Figure 1 ;
Figure 4
FIG. 4 is a sectional view taken along line 4-4 of FIG Figure 3 ;
Figure 5
FIG. 5 is a sectional view taken along lines 5-5 of FIG Figure 3 ;
Figure 6
an enlarged illustration of a front area of a cleaning head of the surface cleaning machine according to FIG Figure 1 in a side sectional view along the line 6-6 according to FIG Figure 3 ;
Figure 7
an enlarged illustration of the area A according to Figure 6 in a first position;
Figure 8
a representation similar to Figure 7 in a different position in relation to the direction of gravity;
Figure 9
a perspective partial view of a cleaning head of the surface cleaning machine according to FIG Figure 1 ; and
Figure 10
another view of the cleaning head without the cleaning roller.

Ein Ausführungsbeispiel einer erfindungsgemäßen Flächen-Reinigungsmaschine, welches in den Figuren 1 bis 4 gezeigt ist (und in den Figuren 5 bis 10 in Teildarstellung) und dort mit 10 bezeichnet ist, ist als Boden-Reinigungsmaschine für Hartböden ausgebildet.An embodiment of a surface cleaning machine according to the invention, which in the Figures 1 to 4 is shown (and in the Figures 5 to 10 in partial representation) and is designated there by 10, is designed as a floor cleaning machine for hard floors.

Die Flächen-Reinigungsmaschine 10 umfasst einen Gerätekörper 12 und einen Reinigungskopf 14. Der Reinigungskopf 14 ist an dem Gerätekörper 12 angeordnet.The surface cleaning machine 10 comprises a device body 12 and a cleaning head 14. The cleaning head 14 is arranged on the device body 12.

Bei einem Reinigungsvorgang an einer zu reinigenden Fläche 16 stützt sich die Flächen-Reinigungsmaschine 10 über eine Reinigungswalze 18 an der zu reinigenden Fläche 16 ab.During a cleaning process on a surface 16 to be cleaned, the surface cleaning machine 10 is supported on the surface 16 to be cleaned via a cleaning roller 18.

Der Gerätekörper 12 weist eine Längsachse 20 auf (Figuren 2, 3). Die Flächen-Reinigungsmaschine 10 ist stiehlgehalten. Dazu sitzt an dem Gerätekörper 12 ein Stab 22. Dieser Stab 22 erstreckt sich in der Längsachse 20. An einem oberen Bereich des Stabs 22 ist ein Griff und insbesondere Bügelgriff 24 angeordnet. Ein Bediener kann an diesem Griff 24 einhändig die Flächen-Reinigungsmaschine 10 halten.The device body 12 has a longitudinal axis 20 ( Figures 2 , 3 ). The surface cleaning machine 10 is held in place. For this purpose, a rod 22 is seated on the device body 12. This rod 22 extends in the longitudinal axis 20. A handle and in particular a bow-type handle 24 is arranged on an upper region of the rod 22. An operator can hold the surface cleaning machine 10 with one hand on this handle 24.

An dem Griff 24 sind ein oder mehrere Bedienungselemente angeordnet. Insbesondere ist an dem Griff 24 ein Schalter 26 angeordnet. Über den Schalter 26 ist die Flächen-Reinigungsmaschine 10 für einen Reinigungsbetrieb einschaltbar bzw. ausschaltbar.One or more operating elements are arranged on the handle 24. In particular, a switch 26 is arranged on the handle 24. The surface cleaning machine 10 can be switched on or off for a cleaning operation via the switch 26.

Insbesondere ist die Steuerung der Flächen-Reinigungsmaschine 10 derart, dass durch Betätigung des Schalters 26 alle für die Funktionsweise notwendigen Komponenten (Erzeugung eines Saugstroms durch eine Saugaggregateinrichtung, Rotation der Reinigungswalze 18, Befeuchtung der Reinigungswalze 18) betätigt werden und entsprechend ein Ausschalten an dem Schalter 26 ein synchrones Ausschalten der Betätigung dieser Komponenten bewirkt.In particular, the control of the surface cleaning machine 10 is such that, by actuating the switch 26, all necessary for the functioning Components (generation of a suction flow by a suction unit device, rotation of the cleaning roller 18, moistening of the cleaning roller 18) are actuated and, accordingly, switching off the switch 26 causes the actuation of these components to be switched off synchronously.

Der Stab 22 kann höhenverschieblich (längs der Längsachse 20) oder fest an dem Gerätekörper 12 angeordnet sein.The rod 22 can be vertically displaceable (along the longitudinal axis 20) or fixed on the device body 12.

Der Gerätekörper 12 umfasst ein Gehäuse 28, in welchem Komponenten der Flächen-Reinigungsmaschine 10 geschützt angeordnet sind.The device body 12 comprises a housing 28 in which components of the surface cleaning machine 10 are arranged in a protected manner.

Bei einem Ausführungsbeispiel ist an dem Stab 12 zwischen dem Gehäuse 28 und dem Griff 24 eine Hakeneinrichtung 30 angeordnet, an welcher ein Netzkabel durch Umwicklung an dem Stab 22 fixierbar ist.In one embodiment, a hook device 30 is arranged on the rod 12 between the housing 28 and the handle 24, to which a power cord can be fixed by being wrapped around the rod 22.

Die Flächen-Reinigungsmaschine 10 umfasst eine als Ganzes mit 32 bezeichnete Saugaggregateinrichtung. Diese Saugaggregateinrichtung 32 dient zur Erzeugung eines Saugstroms, um an der Reinigungswalze 18 eine Absaugung durchführen zu können.The surface cleaning machine 10 comprises a suction unit device designated as a whole by 32. This suction unit device 32 is used to generate a suction flow in order to be able to perform suction on the cleaning roller 18.

Die Saugaggregateinrichtung 32 umfasst ein Sauggebläse 34, welches in dem Gehäuse 28 angeordnet ist. Das Sauggebläse 34 wiederum weist einen Motor und insbesondere Elektromotor 36 auf, welche ebenfalls in dem Gehäuse 28 angeordnet ist.The suction unit device 32 comprises a suction fan 34 which is arranged in the housing 28. The suction fan 34 in turn has a motor and in particular an electric motor 36, which is also arranged in the housing 28.

Der Saugaggregateinrichtung 32 ist eine Abscheidereinrichtung 38 zugeordnet. Diese scheidet feste von flüssigen Bestandteilen in einem Saugstrom ab.A separator device 38 is assigned to the suction unit device 32. This separates solid from liquid components in a suction stream.

Die Abscheidereinrichtung 38 ist ebenfalls in dem Gehäuse 28 angeordnet.The separator device 38 is also arranged in the housing 28.

Der Abscheidereinrichtung 38 ist eine Tankeinrichtung 40 für Schmutzflüssigkeit zugeordnet. Diese sitzt abnehmbar an dem Gehäuse 28.The separator device 38 is assigned a tank device 40 for dirty liquid. This sits removably on the housing 28.

An dem Gehäuse 28 sitzt ferner abnehmbar eine Tankeinrichtung 42 für Reinigungsflüssigkeit. Die Reinigungsflüssigkeit ist insbesondere Wasser oder ein Gemisch aus Wasser und Reinigungsmittel.A tank device 42 for cleaning fluid is also removably seated on the housing 28. The cleaning liquid is in particular water or a mixture of water and cleaning agent.

Die Saugaggregateinrichtung 32 steht in fluidwirksamer Verbindung mit (mindestens) einem Saugkanal 44, welcher von dem Sauggebläse 34 an dem Gerätekörper 12 durch das Gehäuse 28 hindurch zu dem Reinigungskopf 14 geführt ist. Der Saugkanal 44 weist einen ersten Bereich 46 auf, welcher in dem Gehäuse 28 positioniert ist. Bei einem Ausführungsbeispiel sitzt in dem Gehäuse 28 an dem ersten Bereich 46 eine Abzweigung 48, welche auf einen zweiten Bereich 50 und einen dritten Bereich 52 des Saugkanals 44 abzweigt. Der erste Bereich 46 wird dadurch in zwei Unterkanäle aufgeteilt. Der zweite Bereich 50 und der dritte Bereich 52 sind jeweils zu dem Reinigungskopf 14 geführt.The suction unit device 32 is in fluid communication with (at least) one suction channel 44, which is guided by the suction fan 34 on the device body 12 through the housing 28 to the cleaning head 14. The suction channel 44 has a first region 46 which is positioned in the housing 28. In one embodiment, a junction 48 is located in the housing 28 on the first area 46, which branches off to a second area 50 and a third area 52 of the suction channel 44. The first area 46 is thereby divided into two sub-channels. The second area 50 and the third area 52 each lead to the cleaning head 14.

Dem zweiten Bereich 50 und dem dritten Bereich 52 ist jeweils eine Saugmündung 54 zugeordnet, welche an dem Reinigungskopf 14 positioniert ist.A suction port 54, which is positioned on the cleaning head 14, is assigned to the second area 50 and the third area 52.

An der Reinigungswalze 18 ist ein Besatz 56 angeordnet (vgl. Figur 9). Dieser Besatz ist beispielsweise ein Vlieswerkstoff.A trim 56 is arranged on the cleaning roller 18 (cf. Figure 9 ). This trim is, for example, a nonwoven material.

Bei einem Ausführungsbeispiel weist die Saugmündung eine erste Mündungswandung 58 und eine zweite beabstandete Mündungswandung 60 auf (Figur 5). Zwischen der ersten Mündungswandung 58 und der zweiten Mündungswandung 60 ist die jeweilige Saugmündung 54 gebildet. Die erste Mündungswandung 58 liegt oberhalb der zweiten Mündungswandung 60, wenn die Reinigungswalze 18 auf der zu reinigenden Fläche 16 aufgesetzt ist. Die erste Mündungswandung 58 und/oder die zweite Mündungswandung 60 liegen an dem Besatz 56 der Reinigungswalze 18 an oder ragen in den Besatz 56 hinein. Eine entsprechende Mündungsausbildung ist in der nicht vorveröffentlichten internationalen Anmeldung PCT/EP2013/076445 vom 12. Dezember 2013 des gleichen Anmelders beschrieben. Auf dieses Dokument wird ausdrücklich und vollinhaltlich Bezug genommen.In one embodiment, the suction mouth has a first mouth wall 58 and a second, spaced apart mouth wall 60 ( Figure 5 ). The respective suction opening 54 is formed between the first opening wall 58 and the second opening wall 60. The first mouth wall 58 lies above the second mouth wall 60 when the cleaning roller 18 is placed on the surface 16 to be cleaned. The first opening wall 58 and / or the second opening wall 60 lie against the facing 56 of the cleaning roller 18 or protrude into the facing 56. A corresponding mouth formation is in the not previously published international application PCT / EP2013 / 076445 of December 12, 2013 by the same applicant. Reference is made expressly and in full to this document.

Grundsätzlich kann dabei dem zweiten Bereich 50 und dem dritten Bereich 52 eine eigene Saugmündung 54 zugeordnet sein, oder es kann eine gemeinsame Saugmündung für den zweiten Bereich 50 und den dritten Bereich 52 des Saugkanals 44 vorgesehen sein. Diese eine Saugmündung 54 weist dann zwei Absaugstellen über den zweiten Bereich 50 und den dritten Bereich 52 auf.In principle, a separate suction opening 54 can be assigned to the second area 50 and the third area 52, or a common suction opening can be provided for the second area 50 and the third area 52 of the suction channel 44. This one suction opening 54 then has two suction points over the second area 50 and the third area 52.

Grundsätzlich kann die Saugaggregateinrichtung 32 auch abzweigungsfrei ausgebildet sein und mehrere (insbesondere zwei) Saugkanäle (zwei erste Bereiche 46) umfassen, welche in dem Gehäuse 28 angeordnet sind. Diese setzen sich dann in den zweiten Bereich 50 bzw. den dritten Bereich 52 fort.In principle, the suction unit device 32 can also be designed without branches and comprise several (in particular two) suction channels (two first regions 46) which are arranged in the housing 28. These then continue into the second area 50 or the third area 52.

Der Reinigungskopf 14 ist an dem Gerätekörper 12 über ein Gelenk 62 schwenkbar um eine Schwenkachse 64 gehalten (Figur 2, Figur 4). Die Schwenkachse 64 liegt quer zu der Längsachse 20 des Gerätekörpers 12. Sie liegt insbesondere in einem spitzen Winkel 66 (Figur 2) zu der Längsachse 20. Der spitze Winkel 66 liegt insbesondere im Bereich zwischen 15° und 35°. Bei einem Ausführungsbeispiel liegt der spitze Winkel 66 bei ca. 25°.The cleaning head 14 is held on the device body 12 via a joint 62 so as to be pivotable about a pivot axis 64 ( Figure 2 , Figure 4 ). The pivot axis 64 lies transversely to the longitudinal axis 20 of the device body 12. It lies in particular at an acute angle 66 ( Figure 2 ) to the longitudinal axis 20. The acute angle 66 is in particular in the range between 15 ° and 35 °. In one embodiment, the acute angle 66 is approximately 25 °.

Die Schwenkachse 64 liegt quer und insbesondere senkrecht zu einer Rotationsachse 68 der Reinigungswalze 18.The pivot axis 64 lies transversely and in particular perpendicular to an axis of rotation 68 of the cleaning roller 18.

Die Reinigungswalze 18 weist eine Längsachse 70 auf. Die Längsachse 70 ist insbesondere koaxial zur Rotationsachse 68.The cleaning roller 18 has a longitudinal axis 70. The longitudinal axis 70 is in particular coaxial with the axis of rotation 68.

Das Schwenkgelenk umfasst eine Innenhülse 72 (vgl. beispielsweise Figur 4), welche entsprechend der Orientierung der Schwenkachse 64 in dem spitzen Winkel 66 zu der Längsachse 20 an dem Gerätekörper 12 angeordnet ist.The swivel joint comprises an inner sleeve 72 (see. For example Figure 4 ), which is arranged on the device body 12 at the acute angle 66 to the longitudinal axis 20 in accordance with the orientation of the pivot axis 64.

Der Reinigungskopf 14 weist eine Außenhülse 74 auf, welche auf der Innenhülse 72 sitzt. Eine entsprechende Sperreinrichtung sorgt dafür, dass die Außenhülse 74 bezüglich der Innenhülse 72 in Richtung der Schwenkachse 64 unverschieblich ist.The cleaning head 14 has an outer sleeve 74 which sits on the inner sleeve 72. A corresponding locking device ensures that the outer sleeve 74 cannot be displaced with respect to the inner sleeve 72 in the direction of the pivot axis 64.

Die Innenhülse 72 weist eine zylindrische Außenkontur auf. Die Außenhülse 74 weist eine zylindrische Innenkontur auf. Das Gelenk 62 ist als Gleitgelenk über die drehbare Lagerung der Außenhülse 74 auf der Innenhülse 72 ausgebildet.The inner sleeve 72 has a cylindrical outer contour. The outer sleeve 74 has a cylindrical inner contour. The joint 62 is designed as a sliding joint via the rotatable mounting of the outer sleeve 74 on the inner sleeve 72.

Grundsätzlich kann eine Schwenkbarkeit um einen vollen 360°-Winkel vorgesehen sein. Bei einem Ausführungsbeispiel ist die Schwenkbarkeit beispielsweise auf einen Bereich um ± 45° oder ± 90° begrenzt.In principle, pivotability through a full 360 ° angle can be provided. In one embodiment, the pivotability is limited, for example, to a range of ± 45 ° or ± 90 °.

Eine Leitung für die Bereiche 50, 52 zwischen dem Gerätekörper 12 und dem Reinigungskopf 14 ist entsprechend elastisch ausgebildet, um eine Schwenkung des Reinigungskopfes 14 (insbesondere in einem begrenzten Schwenkbereich) an dem Gelenk 62 zu ermöglichen.A line for the areas 50, 52 between the device body 12 and the cleaning head 14 is designed to be correspondingly elastic in order to enable the cleaning head 14 to pivot (in particular in a limited pivoting range) at the joint 62.

Zum rotierenden Antrieb der Reinigungswalze 18 ist eine Antriebseinrichtung 76 vorgesehen. Die Antriebseinrichtung 76 umfasst einen Antriebsmotor 78. Dieser Antriebsmotor 78 ist insbesondere ein Elektromotor. Der Antriebsmotor 78 ist in der Innenhülse 72 des Gelenks 62 positioniert.A drive device 76 is provided for the rotating drive of the cleaning roller 18. The drive device 76 comprises a drive motor 78. This drive motor 78 is in particular an electric motor. The drive motor 78 is positioned in the inner sleeve 72 of the joint 62.

Der Antriebsmotor 78 weist eine Motorwelle 80 auf. Die Motorwelle 80 hat eine Antriebsachse 82. Die Antriebsachse 82 ist parallel und insbesondere koaxial zu der Schwenkachse 64.The drive motor 78 has a motor shaft 80. The motor shaft 80 has a drive axis 82. The drive axis 82 is parallel and in particular coaxial with the pivot axis 64.

Der Antriebsmotor 78 sitzt fest in der Innenhülse 72 an dem Gerätekörper 12. Er ist dabei an dem Übergang von dem Gerätekörper 12 zu dem Reinigungskopf 14, nämlich an dem Gelenk 62 positioniert. Er ist dabei platzsparend untergebracht und liegt bezogen auf einen Schwerpunkt der Flächen-Reinigungsmaschine 10 in der Nähe des Reinigungskopfes 14.The drive motor 78 is firmly seated in the inner sleeve 72 on the device body 12. It is positioned at the transition from the device body 12 to the cleaning head 14, namely on the joint 62. It is housed in a space-saving manner and is located in the vicinity of the cleaning head 14 in relation to a focus of the surface cleaning machine 10.

Der Antriebsmotor 78 wird beispielsweise über Netzstrom mit elektrischer Energie versorgt.The drive motor 78 is supplied with electrical energy, for example via mains current.

Die Antriebsachse 82 des Antriebsmotors 78 und die Rotationsachse 68 der Reinigungswalze 18 sind quer zueinander orientiert und insbesondere senkrecht zueinander orientiert. Zur Drehmomentenübertragung von der Antriebseinrichtung 76 zu der Reinigungswalze 18 ist eine Getriebeeinrichtung 84 vorgesehen. Bei einem Ausführungsbeispiel umfasst die Getriebeeinrichtung 84 einen Drehzahluntersetzer 86. Der Drehzahluntersetzer 86 dient zu einer Herabsetzung einer Drehzahl im Vergleich zur Drehzahl der Motorwelle 80. Bei dem Antriebsmotor 78 handelt es sich insbesondere um einen Standard-Elektromotor, welcher beispielsweise eine Drehzahl in der Größenordnung von 7000 Umdrehungen pro Minute aufweist. Der Drehzahluntersetzer 86 sorgt für eine Heruntersetzung der Drehzahl auf beispielsweise ca. 400 Umdrehungen pro Minute.The drive axis 82 of the drive motor 78 and the axis of rotation 68 of the cleaning roller 18 are oriented transversely to one another and in particular oriented perpendicular to one another. A transmission device 84 is provided for the transmission of torque from the drive device 76 to the cleaning roller 18. In one embodiment, the transmission device 84 comprises a speed reducer 86. The speed reducer 86 is used to reduce a speed compared to the speed of the motor shaft 80. The drive motor 78 is in particular a standard electric motor, which, for example, has a speed in the order of magnitude of Has 7000 revolutions per minute. The speed reducer 86 ensures that the speed is reduced to approximately 400 revolutions per minute, for example.

Der Drehzahluntersetzer 86 ist insbesondere direkt an dem Antriebsmotor 78 angeordnet, d. h. diesem nächstbenachbart angeordnet. Er kann dabei noch in der Innenhülse 72 oder bereits an dem Reinigungskopf 14 angeordnet sein.The speed reducer 86 is in particular arranged directly on the drive motor 78, i. H. arranged next to it. It can still be arranged in the inner sleeve 72 or already on the cleaning head 14.

Bei einem Ausführungsbeispiel ist der Drehzahluntersetzer 86 als Planetenradgetriebe ausgebildet.In one embodiment, the speed reducer 86 is designed as a planetary gear.

Die Getriebeeinrichtung 84 weist ferner ein Winkelgetriebe 88 auf. Dieses Winkelgetriebe 88 sorgt für eine Drehmomentenumlenkung, um einen Antrieb der Reinigungswalze 18 mit der Rotationsachse 68 quer zur Antriebsachse 82 des Antriebsmotors 78 zu bewirken. Das Winkelgetriebe 88 ist insbesondere dem Drehzahluntersetzer 86 nachgeschaltet.The gear mechanism 84 also has an angular gear 88. This angular gear 88 ensures a torque deflection in order to bring about a drive of the cleaning roller 18 with the axis of rotation 68 transverse to the drive axis 82 of the drive motor 78. The angular gear 88 is in particular connected downstream of the speed reducer 86.

Bei einem Ausführungsbeispiel weist das Winkelgetriebe 88 ein oder mehrere Zahnräder auf, welche drehfest an eine entsprechende Welle des Drehzahluntersetzers 86 gekoppelt sind. Diese wirken auf ein Kegelzahnrad zur Winkelumsetzung.In one embodiment, the angular gear 88 has one or more gearwheels which are non-rotatably coupled to a corresponding shaft of the speed reducer 86. These act on a bevel gear for angular conversion.

Der Reinigungskopf 14 weist eine erste Stirnseite 90 und eine gegenüberliegende zweite Stirnseite 92 auf (siehe beispielsweise Figur 10). Zwischen der ersten Stirnseite 90 und der zweiten Stirnseite 92 erstreckt sich ein Gehäuse 94 eines Reinigungswalzen-Halters 96. Dieses Gehäuse 94 umgreift teilweise eine an ihm gehaltene Reinigungswalze 18 in Form einer Halbschale, wobei die Umgreifung derart ist, dass die Reinigungswalze 18 mit einem signifikanten Anteil für einen Reinigungsvorgang herausragt.The cleaning head 14 has a first end face 90 and an opposite second end face 92 (see for example Figure 10 ). Between the first end 90 and the second end 92 a housing 94 of a cleaning roller holder 96 extends. This housing 94 partially surrounds a cleaning roller 18 held on it in the form of a half-shell, the encompassing being such that the cleaning roller 18 with a significant proportion for a cleaning process protrudes.

Bei einem Ausführungsbeispiel ist an dem Gehäuse 94 des Reinigungswalzen-Halters 96 ein Kehrelement 98 drehbar gelagert, wobei dieses Kehrelement 98 zum Einkehren von Grobschmutz zur Mitnahme durch die Reinigungswalze 18 dient.In one embodiment, a sweeping element 98 is rotatably mounted on the housing 94 of the cleaning roller holder 96, this sweeping element 98 serving to sweep in coarse dirt to be carried along by the cleaning roller 18.

Ein Reinigungskopf 14 mit einem entsprechenden Kehrelement 98 ist in der deutschen Patentanmeldung Nr. 10 2014 114 776.6 vom 13. Oktober 2014 des gleichen Anmelders beschrieben. Auf dieses Dokument wird ausdrücklich und vollinhaltlich Bezug genommen.A cleaning head 14 with a corresponding sweeping element 98 is in the German patent application No. 10 2014 114 776.6 of October 13, 2014 by the same applicant. Reference is made expressly and in full to this document.

In einem mittleren Bereich 100 des Reinigungswalzen-Halters 96 zwischen der ersten Stirnseite 90 und der zweiten Stirnseite 92 ist ein Antriebselement 102 angeordnet. Dieses Antriebselement 102 ist drehmomentwirksam mit der Antriebseinrichtung 76 verbunden.A drive element 102 is arranged in a central region 100 of the cleaning roller holder 96 between the first end face 90 and the second end face 92. This drive element 102 is connected to the drive device 76 in a torque-effective manner.

Bei einem Ausführungsbeispiel ist das Antriebselement 102 über einen Riemen 104 drehmomentwirksam an das Winkelgetriebe 88 gekoppelt. Das Antriebselement 102 ist beabstandet zu dem Winkelgetriebe 88. Der Riemen 104 überbrückt diesen Abstand und bewirkt einen Antrieb des Antriebselements mit Rotation um die Rotationsachse 68.In one embodiment, the drive element 102 is coupled to the angular gear 88 in a torque-effective manner via a belt 104. The drive element 102 is spaced apart from the angular gear 88. The belt 104 bridges this distance and causes the drive element to be driven with rotation about the axis of rotation 68.

An dem Antriebselement 102 ist zu der ersten Stirnseite 90 hin ein erster Stift 106 drehfest angeordnet. Zu der zweiten Stirnseite 92 hin ist ein zweiter Stift 108 drehfest angeordnet.A first pin 106 is arranged on the drive element 102 in a rotationally fixed manner towards the first end face 90. A second pin 108 is arranged non-rotatably towards the second end face 92.

Die Reinigungswalze 18 (beispielsweise Figur 9) ist zweiteilig ausgebildet mit einem ersten Teil 110, welcher drehfest an dem ersten Stift 106 sitzt, und einem zweiten Teil 112, welcher drehfest an dem zweiten Stift 108 sitzt. Der erste Teil 110 weist zu der ersten Stirnseite 90 hin. Der zweite Teil 112 weist zu der zweiten Stirnseite 92 hin.The cleaning roller 18 (for example Figure 9 ) is designed in two parts with a first part 110, which is non-rotatably seated on the first pin 106, and a second part 112 which is seated in a rotationally fixed manner on the second pin 108. The first part 110 points to the first end face 90. The second part 112 points towards the second end face 92.

Zwischen dem ersten Teil 110 und dem zweiten Teil 112 ist ein Spalt 114 gebildet. Dieser Spalt 114 ist relativ schmal ausgebildet und weist eine sehr viel kleinere Breite auf als eine Länge der Reinigungswalze 18 in der Längsachse 20. In dem Spalt 114 ist der Riemen 104 geführt. Der Riemen 104 ist dabei zurückgesetzt gegenüber einer Außenseite der Reinigungswalze 18 auch gegenüber einer Stellung, in welcher der Besatz 56 zusammengedrückt ist.A gap 114 is formed between the first part 110 and the second part 112. This gap 114 is relatively narrow and has a very much smaller width than a length of the cleaning roller 18 in the longitudinal axis 20. The belt 104 is guided in the gap 114. The belt 104 is set back with respect to an outside of the cleaning roller 18 also with respect to a position in which the facing 56 is compressed.

Die Flächen-Reinigungsmaschine 10 umfasst eine Befeuchtungseinrichtung 116 für die Reinigungswalze 18 (insbesondere Figuren 6 bis 8).The surface cleaning machine 10 comprises a moistening device 116 for the cleaning roller 18 (in particular Figures 6 to 8 ).

Die Befeuchtungseinrichtung umfasst (mindestens) einen druckgesteuerten Schalter 118. Dieser druckgesteuerte Schalter 118 ist beweglich. (In den Figuren 7 und 8 ist dies mit dem Doppelpfeil 120 angedeutet.) Der druckgesteuerte Schalter 118 umfasst eine bewegliche Membran 122, an welcher beispielsweise einstückig ein Sperrelement 124 sitzt. Über die Beweglichkeit der Membran 122 ist auch das Sperrelement 124 beweglich. Die Membran 122 weist eine erste Fläche 126 auf. Diese erste Fläche 126 steht in druckwirksamer Verbindung mit dem Saugkanal 44 und dabei mit dem zweiten Bereich 50 bzw. dem dritten Bereich 52. Der in dem zweiten Bereich 50 (bzw. dem dritten Bereich 52) herrschende Druck steht an der ersten Fläche 126 an. In einem Reinigungsbetrieb der Flächen-Reinigungsmaschine 10 ist aufgrund des Saugstroms dieser Druck ein Unterdruck gegenüber dem Außenraum 128 außerhalb der Flächen-Reinigungsmaschine 10.The humidifying device comprises (at least) one pressure-controlled switch 118. This pressure-controlled switch 118 is movable. (In the Figures 7 and 8th this is indicated by the double arrow 120.) The pressure-controlled switch 118 comprises a movable membrane 122 on which, for example, a blocking element 124 is seated in one piece. The blocking element 124 is also movable via the mobility of the membrane 122. The membrane 122 has a first surface 126. This first area 126 is in pressure-effective connection with the suction channel 44 and thereby with the second area 50 or the third area 52. The pressure prevailing in the second area 50 (or the third area 52) is applied to the first area 126. In a cleaning operation of the surface cleaning machine 10, this pressure is a negative pressure with respect to the outer space 128 outside the surface cleaning machine 10 due to the suction flow.

Der ersten Fläche 126 gegenüberliegend weist die Membran 122 eine zweite Fläche 130 auf.Opposite the first surface 126, the membrane 122 has a second surface 130.

Die Membran 122 steht in fluidwirksamer Verbindung mit einem Sammelraum 132. Der Sammelraum 132 kann Reinigungsflüssigkeit aufnehmen.The membrane 122 is in fluid communication with a collecting space 132. The collecting space 132 can receive cleaning fluid.

Der Sammelraum 132 steht über eine Leitung 134 in fluidwirksamer Verbindung mit der Tankeinrichtung 42 für Reinigungsflüssigkeit.The collecting space 132 is in fluid communication with the tank device 42 for cleaning liquid via a line 134.

Die Leitung 134 ist von der Tankeinrichtung 42 durch den Gerätekörper 12 zu dem Reinigungskopf 14 geführt. Sie ist so flexibel ausgestaltet, dass sie eine Schwenkbarkeit (insbesondere innerhalb eines endlichen Schwenkbereichs) des Reinigungskopfes 14 an dem Gerätekörper 12 um das Gelenk 62 nicht behindert.The line 134 is led from the tank device 42 through the device body 12 to the cleaning head 14. It is designed so flexibly that it does not hinder pivotability (in particular within a finite pivoting range) of the cleaning head 14 on the device body 12 about the joint 62.

Bei einem Ausführungsbeispiel (Figur 9) ist an dem Reinigungskopf 14 eine Mehrzahl von druckgesteuerten Schaltern 118 angeordnet.In one embodiment ( Figure 9 A plurality of pressure-controlled switches 118 are arranged on the cleaning head 14.

Bei dem gezeigten Ausführungsbeispiel umfasst der Reinigungskopf 14 zwei druckgesteuerte Schalter 118. Es ist jeweils ein druckgesteuerter Schalter 18 druckwirksam mit dem zweiten Bereich 50 verbunden und es ist ein weiterer druckgesteuerter Schalter 118 druckwirksam mit dem dritten Bereich 52 verbunden.In the exemplary embodiment shown, the cleaning head 14 comprises two pressure-controlled switches 118. One pressure-controlled switch 18 is connected to the second area 50 in a pressure-effective manner and a further pressure-controlled switch 118 is connected to the third area 52 in a pressure-effective manner.

Die Leitung 134 führt an einem Anschluss 136 (welcher insbesondere ein T-Stück ist) in eine Verteilerleitung 138. Die Verteilerleitung 138 wiederum mündet an einer ersten Anschlussstelle 140 und an einer zweiten Anschlussstelle 142 in das Gehäuse 94. Hinter der ersten Anschlussstelle 140 und der zweiten Anschlussstelle 142 ist jeweils ein zugeordneter druckgesteuerter Schalter 118 angeordnet. Die Verteilerleitung 138 bildet den Sammelraum 132.The line 134 leads at a connection 136 (which is in particular a T-piece) into a distribution line 138. The distribution line 138 in turn opens at a first connection point 140 and at a second connection point 142 into the housing 94 An associated pressure-controlled switch 118 is arranged in each case on the second connection point 142. The distribution line 138 forms the collecting space 132.

Zwischen der Verteilerleitung 138 und der Tankeinrichtung 42 ist an der Leitung 134 ein Sperrventil 139 angeordnet. Dieses ist insbesondere manuell betätigbar. Durch das Sperrventil 139 ist eine fluidwirksame Verbindung zwischen der Tankeinrichtung 42 und einem Fluideingang eines druckgesteuerten Schalters 118 sperrbar.A shut-off valve 139 is arranged on the line 134 between the distributor line 138 and the tank device 42. This can in particular be operated manually. A fluid-active connection between the tank device 42 and a fluid inlet of a pressure-controlled switch 118 can be blocked by the blocking valve 139.

Grundsätzlich können auch mehr als zwei druckgesteuerte Schalter 118 mit entsprechenden Anschlussstellen und Sammelräumen vorgesehen sein, wobei ein Sammelraum auch mehreren Schaltern 118 zugeordnet sein kann, oder es kann nur ein einziger druckgesteuerter Schalter 118 mit nur einem Sammelraum 132 vorgesehen sein.In principle, more than two pressure-controlled switches 118 with corresponding connection points and collecting spaces can also be provided, wherein a collecting space can also be assigned to several switches 118, or only a single pressure-controlled switch 118 with only one collecting space 132 can be provided.

Bezogen auf einen Normalbetriebsmodus, bei dem die Reinigungswalze 18 sich auf der zu reinigenden Fläche 16 abstützt, ein Bediener der Flächen-Reinigungsmaschine 10 auf der zu reinigenden Fläche 16 steht und dabei die Flächen-Reinigungsmaschine an dem Griff 24 hält, wobei der Griff 24 bezogen auf die Schwerkraftrichtung g oberhalb der zu reinigenden Fläche 16 positioniert ist, ist die Tankeinrichtung 42 für Reinigungsflüssigkeit oberhalb des Reinigungskopfes 14 positioniert. Dadurch kann Reinigungsflüssigkeit aus der Tankeinrichtung 42 pumpenfrei zu dem Reinigungskopf 14 gefördert werden, nämlich getrieben durch die Schwerkraft (sofern das Sperrventil 139 geöffnet ist).In relation to a normal operating mode, in which the cleaning roller 18 is supported on the surface 16 to be cleaned, an operator of the surface cleaning machine 10 stands on the surface 16 to be cleaned and holds the surface cleaning machine by the handle 24, the handle 24 being related is positioned in the direction of gravity g above the surface 16 to be cleaned, the tank device 42 for cleaning liquid is positioned above the cleaning head 14. As a result, cleaning liquid can be conveyed from the tank device 42 to the cleaning head 14 without pumps, namely driven by gravity (provided that the shut-off valve 139 is open).

Insbesondere ist der Sammelraum 132 in Zusammenwirkung mit dem druckgesteuerten Schalter 118 so ausgebildet, dass in dem Sammelraum 132 ständig Reinigungsflüssigkeit ansteht (sofern das Sperrventil 139 geöffnet ist).In particular, the collecting space 132 is designed in cooperation with the pressure-controlled switch 118 in such a way that cleaning fluid is constantly present in the collecting space 132 (if the shut-off valve 139 is open).

Die zweite Fläche 130 weist in einen Raum 144, welcher in druckwirksamer Verbindung mit dem Außenraum 128 steht.The second surface 130 points into a space 144 which is in pressure-effective connection with the outer space 128.

Zwischen dem Sammelraum 132 und dem Raum 144 ist ein öffenbarer und schließbarer Fluidweg 146 gebildet. In Abhängigkeit von der Stellung des druckgesteuerten Schalters 118 kann Flüssigkeit aus dem Sammelraum 132 in den Raum 144 strömen. Je nach Stellung des Sperrelements 124 ist dieser Fluidweg 146 gesperrt oder geöffnet.An openable and closable fluid path 146 is formed between the collecting space 132 and the space 144. Depending on the position of the pressure-controlled switch 118, liquid can flow from the collecting space 132 into the space 144. Depending on the position of the blocking element 124, this fluid path 146 is blocked or opened.

In Abhängigkeit von dem an der ersten Fläche 126 anliegenden Druck liegt eine Druckdifferenz zwischen der zweiten Fläche 130 und der ersten Fläche 126 vor oder liegt nicht vor.Depending on the pressure applied to the first surface 126, there is or is not a pressure difference between the second surface 130 and the first surface 126.

Bei einem Betrieb der Flächen-Reinigungsmaschine, bei welchem das Sauggebläse 34 betrieben ist, liegt gegenüber dem Außenraum 128 ein Unterdruck oberhalb eines Schwellenwerts an der ersten Fläche 126. Damit liegt eine signifikante Druckdifferenz zwischen der zweiten Fläche 130 und der ersten Fläche 126.During operation of the surface cleaning machine in which the suction fan 34 is operated, there is a negative pressure above a threshold value on the first surface 126 with respect to the outer space 128. This means that there is a significant pressure difference between the second surface 130 and the first surface 126.

Dem Sperrelement 124 gegenüberliegend ist eine Wandung 148 angeordnet, welche eine Anlagefläche 150 für das Sperrelement 124 aufweist.A wall 148 is arranged opposite the blocking element 124 and has a contact surface 150 for the blocking element 124.

Wenn keine Druckdifferenz zwischen der zweiten Fläche 130 und der ersten Fläche 126 besteht bzw. die Druckdifferenzschwelle nicht überschritten wird, dann liegt das Sperrelement 124 an der Anlagefläche 150 an und der Fluidweg 146 ist gesperrt; der entsprechende Sammelraum 132 und der Raum 144 sind fluidwirksam getrennt.If there is no pressure difference between the second surface 130 and the first surface 126 or if the pressure difference threshold is not exceeded, then the blocking element 124 rests against the contact surface 150 and the fluid path 146 is blocked; the corresponding collecting space 132 and the space 144 are fluidically separated.

Wenn eine ausreichende Druckdifferenz zwischen der zweiten Fläche 130 und der ersten Fläche 126 anliegt, dann hebt das Sperrelement 124 von der Anlagefläche 150 ab und der Fluidweg 146 ist freigegeben. Aus dem Sammelraum 132 und damit aus der Tankeinrichtung 42 kann Reinigungsflüssigkeit in den Raum 144 strömen.When a sufficient pressure difference is present between the second surface 130 and the first surface 126, the blocking element 124 lifts off the contact surface 150 and the fluid path 146 is released. Cleaning fluid can flow into the space 144 from the collecting space 132 and thus from the tank device 42.

Bei einem Reinigungsbetrieb der Flächen-Reinigungsmaschine 10, bei dem in dem Saugkanal 44 und damit auch in dem zweiten Bereich 50 bzw. dritten Bereich 52 ein Saugstrom vorliegt, liegt eine entsprechende Unterdruckbeaufschlagung an der ersten Fläche 126 vor, welche ein Abheben des Sperrelements 124 von der Anlagefläche 150 bewirkt und das Sperrelement 124 in dieser abgehobenen Stellung hält. Die abgehobene Stellung ist eine geöffnete Stellung des druckgesteuerten Schalters 118.During a cleaning operation of the surface cleaning machine 10 in which there is a suction flow in the suction channel 44 and thus also in the second area 50 or third area 52, a corresponding negative pressure is applied to the first surface 126, which causes the blocking element 124 to lift off causes the contact surface 150 and holds the locking element 124 in this raised position. The lifted position is an open position of the pressure-controlled switch 118.

Wenn das Sperrelement 124 an der Anlagefläche 150 anliegt, dann liegt eine geschlossene Stellung des druckgesteuerten Schalters 118 mit Sperrung des Fluidwegs 146 vor.When the blocking element 124 rests against the contact surface 150, the pressure-controlled switch 118 is in a closed position with the fluid path 146 blocked.

Der druckgesteuerte Schalter 118 weist eine Rückstelleinrichtung auf, welche, wenn die Druckdifferenz zwischen der ersten Fläche 126 und der zweiten Fläche 130 unterhalb des Schwellenwerts liegt, eine Rückstellung des Sperrelements 124 in die geschlossene Stellung mit Anlage des Sperrelements 124 an der Anlagefläche 150 bewirkt.The pressure-controlled switch 118 has a reset device which, when the pressure difference between the first surface 126 and the second surface 130 is below the threshold value, causes the locking element 124 to be reset to the closed position with the locking element 124 in contact with the contact surface 150.

Bei einem Ausführungsbeispiel ist die Rückstelleinrichtung mittels der Eigenelastizität der Membran 122 ausgebildet.In one embodiment, the resetting device is formed by means of the inherent elasticity of the membrane 122.

Der Übergang von der geöffneten Stellung in die geschlossene Stellung bzw. umgekehrt des druckgesteuerten Schalters 118 ist direkt verknüpft mit dem Betrieb des Sauggebläses 34; der notwendige Unterdruck zum Bewegen und Halten der Membran 122 in der geöffneten Stellung ist durch den durch die Saugaggregateinrichtung 32 erzeugten Saugstrom bewirkt.The transition from the open position to the closed position or vice versa of the pressure-controlled switch 118 is directly linked to the operation of the suction fan 34; the negative pressure required to move and hold the membrane 122 in the open position is brought about by the suction flow generated by the suction unit device 32.

Dem druckgesteuerten Schalter 118 und insbesondere einer Mehrzahl von druckgesteuerten Schaltern 118 ist ein Verteiler 152 zugeordnet. Der Verteiler 152 dient zur Verteilung von Reinigungsflüssigkeit auf die Reinigungswalze 18 und insbesondere zu deren Flüssigkeitsbeaufschlagung über die Länge der Reinigungswalze 18.A distributor 152 is assigned to the pressure-controlled switch 118 and in particular to a plurality of pressure-controlled switches 118. The distributor 152 serves to distribute cleaning fluid to the cleaning roller 18 and in particular to apply fluid to it over the length of the cleaning roller 18.

Bei einem Ausführungsbeispiel ist der Verteiler 152 als Rinne 154 ausgebildet. Die Rinne 154 nimmt Reinigungsflüssigkeit bis zu einem gewissen Niveau auf. Sie kann Reinigungsflüssigkeit sammeln.In one embodiment, the distributor 152 is designed as a channel 154. The channel 154 receives cleaning liquid up to a certain level. It can collect cleaning fluid.

Die Rinne 154 erstreckt sich parallel zur Längsachse 70 der Reinigungswalze 18 und damit parallel zur Rotationsachse 68.The channel 154 extends parallel to the longitudinal axis 70 of the cleaning roller 18 and thus parallel to the axis of rotation 68.

Sie ist insbesondere in dem Raum 144 angeordnet.It is arranged in particular in the space 144.

Sie erstreckt sich insbesondere in einer Länge, welche der Länge der Reinigungswalze 18 in der Längsachse 70 entspricht, so dass diese über ihre gesamte Länge mit Reinigungsflüssigkeit beaufschlagbar ist.In particular, it extends over a length which corresponds to the length of the cleaning roller 18 in the longitudinal axis 70, so that cleaning fluid can be applied to it over its entire length.

Der Rinne 154 ist eine Auslassöffnungseinrichtung 156 zugeordnet, welche sich insbesondere über die gesamte Länge der Reinigungswalze 18 erstreckt.The channel 154 is assigned an outlet opening device 156, which extends in particular over the entire length of the cleaning roller 18.

Die Rinne 154 ist halbschalenförmig ausgebildet. Sie weist dadurch über ihre gesamte Länge eine Abgabeöffnung 158 für Reinigungsflüssigkeit auf.The channel 154 is designed in the shape of a half-shell. As a result, it has a discharge opening 158 for cleaning fluid over its entire length.

Der Verteiler 152 mit der Rinne 154 kann Reinigungsflüssigkeit sammeln. Es ist dadurch ein Zwischenpuffer für Reinigungsflüssigkeit gebildet. Reinigungsflüssigkeit strömt nicht unbedingt direkt auf dem Fluidweg 146 der Reinigungswalze 18 zu, sondern wird entsprechend in der Rinne 154 gesammelt.The manifold 152 with the channel 154 can collect cleaning liquid. This creates an intermediate buffer for cleaning fluid. Cleaning liquid does not necessarily flow directly to the cleaning roller 18 on the fluid path 146, but is correspondingly collected in the channel 154.

Je nach Position des Verteilers 152 zu der Schwerkraftrichtung g und damit je nach Position und Winkelstellung der Längsachse 20 der Flächen-Reinigungsmaschine 10 zu der zu reinigenden Fläche 16 kann Reinigungsflüssigkeit aus dem Verteiler 152 ausströmen oder nicht. Eine Winkelstellung der Flächen-Reinigungsmaschine 10 zu der zu reinigenden Fläche 16 ist in Figur 1 mit dem Bezugszeichen 160 angedeutet. Diese Winkelstellung 160 kann variieren. Die Flächen-Reinigungsmaschine 10 stützt sich mit der Reinigungswalze 18 auf der zu reinigenden Fläche 16 ab. Ein Auflagebereich 162 der Reinigungswalze 18 an der zu reinigenden Fläche 16 bildet eine Schwenkachse für eine Variation der Winkelstellung 160 aus.Depending on the position of the distributor 152 in relation to the direction of gravity g and thus depending on the position and angular position of the longitudinal axis 20 of the surface cleaning machine 10 in relation to the surface 16 to be cleaned, cleaning fluid may or may not flow out of the distributor 152. An angular position of the surface cleaning machine 10 in relation to the surface 16 to be cleaned is shown in FIG Figure 1 indicated by reference numeral 160. This angular position 160 can vary. The surface cleaning machine 10 is supported with the cleaning roller 18 on the surface 16 to be cleaned. A support area 162 of the cleaning roller 18 on the surface 16 to be cleaned forms a pivot axis for a variation of the angular position 160.

Die Rinne 154 ist so angeordnet, dass, wenn ein bestimmter Schwenkwinkel der Winkelstellung 160 erreicht wird, Reinigungsflüssigkeit aus der Rinne 154 direkt der Reinigungswalze 18 zuströmen kann (Figur 8).The channel 154 is arranged in such a way that, when a certain pivoting angle of the angular position 160 is reached, cleaning liquid can flow from the channel 154 directly to the cleaning roller 18 ( Figure 8 ).

In Figur 7 ist eine Position des Verteilers 152 zu der Schwerkraftrichtung g gezeigt, bei welchem die Auslassöffnungseinrichtung 156 auf einem höheren Gravitationspotential liegt als die Rinne 154.In Figure 7 a position of the distributor 152 in relation to the direction of gravity g is shown, in which the outlet opening device 156 is at a higher gravitational potential than the channel 154.

In Figur 8 ist eine Stellung gezeigt, bei der die Auslassöffnungseinrichtung 156 auf einem geringeren Gravitationspotential liegt als die Rinne 154.In Figure 8 a position is shown in which the outlet opening device 156 is at a lower gravitational potential than the channel 154.

Im letzteren Falle kann Reinigungsflüssigkeit direkt aus der Rinne 154 der Reinigungswalze 18 zuströmen und diese mit Reinigungsflüssigkeit beaufschlagen.In the latter case, cleaning liquid can flow directly from the channel 154 of the cleaning roller 18 and apply cleaning liquid to it.

Bei dieser Ausbildung ist die Flüssigkeitsbeaufschlagung der Reinigungswalze 18 gravitationsgesteuert über die Winkelstellung 160. Die Winkelstellung 160 wird wiederum über Handbedienung des Bedieners eingestellt.In this embodiment, the application of liquid to the cleaning roller 18 is controlled by gravity via the angular position 160. The angular position 160 is in turn set by manual operation of the operator.

Je nachdem, ob ein bestimmter minimaler Schwenkwinkel für die Winkelstellung 160 erreicht ist, erfolgt eine Reinigungsmittelbeaufschlagung der Reinigungswalze 18 oder nicht. Dies ist bestimmt durch den Höhenabstand in der Schwerkraftrichtung zwischen der Auslassöffnungseinrichtung 156 und der Rinne 154.Depending on whether a certain minimum pivot angle has been reached for the angular position 160, cleaning agent is applied to the cleaning roller 18 or not. This is determined by the height distance in the direction of gravity between the outlet opening device 156 and the channel 154.

Bei einem vorteilhaften Ausführungsbeispiel sind zwischen dem oder den Räumen 144 und der Auslassöffnungseinrichtung 156 ein oder mehrere Spaltkanäle 162 angeordnet. Reinigungsflüssigkeit aus der Rinne 154 muss, um auf die Reinigungswalze 18 gelangen zu können, einen entsprechenden Spaltkanal 162 durchlaufen.In an advantageous embodiment, one or more gap channels 162 are arranged between the space or spaces 144 and the outlet opening device 156. In order to be able to reach the cleaning roller 18, cleaning fluid from the channel 154 must pass through a corresponding gap channel 162.

Ein Spaltkanal 162 ist insbesondere mit solchen Abmessungen ausgebildet, dass ein Kapillareffekt für die Strömung an Reinigungsflüssigkeit auftritt. Ein solcher Kapillareffekt unterstützt eine gleichmäßige Verteilung von Reinigungsflüssigkeit auf die gesamte Länge der Reinigungswalze 18. Insbesondere erstreckt sich der Spaltkanal 162 im Wesentlichen über die gesamte Länge der Reinigungswalze 18.A gap channel 162 is designed in particular with dimensions such that a capillary effect occurs for the flow of cleaning liquid. Such a capillary effect supports a uniform distribution of cleaning liquid over the entire length of the cleaning roller 18. In particular, the gap channel 162 extends essentially over the entire length of the cleaning roller 18.

Ein Besatz 56 der Reinigungswalze 18 liegt oder liegt nahezu mit einzelnen Fasern an der Auslassöffnungseinrichtung 156 des Spaltkanals 162 bei der Rotation der Reinigungswalze 18 an. Dadurch wird ein (geringer) Unterdruck an dem Verteiler 152 erzeugt, welcher Reinigungsflüssigkeit mitreißt. Weiterhin wird durch die Kapillarwirkung von Fasern des Besatzes Reinigungsflüssigkeit aus dem Spaltkanal 162 gezogen. Dies sorgt für eine gleichmäßige Beaufschlagung der Reinigungswalze 18 mit Reinigungsflüssigkeit.A facing 56 of the cleaning roller 18 lies or lies almost with individual fibers at the outlet opening device 156 of the gap channel 162 Rotation of the cleaning roller 18 on. As a result, a (slight) negative pressure is generated at the distributor 152, which entrains cleaning fluid. Furthermore, cleaning fluid is drawn from the gap channel 162 by the capillary action of fibers of the filling. This ensures a uniform application of cleaning fluid to the cleaning roller 18.

Die Zuführung von Reinigungsflüssigkeit zu der Reinigungswalze 18 ist pumpenfrei ausgebildet. Der druckgesteuerte Schalter 118 ist direkt an eine Saugstromwirkung des Sauggebläses 34 gekoppelt. Es ist dadurch keine zusätzliche Steuerung und insbesondere elektronische Steuerung für eine Befeuchtung der Reinigungswalze 18 notwendig. Insbesondere sind keine Magnetventile oder dergleichen vorgesehen.The supply of cleaning fluid to the cleaning roller 18 is designed to be pump-free. The pressure-controlled switch 118 is directly coupled to a suction flow effect of the suction fan 34. As a result, no additional control, and in particular electronic control, is necessary for moistening the cleaning roller 18. In particular, no solenoid valves or the like are provided.

Die erfindungsgemäße Flächen-Reinigungsmaschine 10 funktioniert wie folgt:
Für einen Reinigungsbetrieb ist die Flächen-Reinigungsmaschine 10 über die Reinigungswalze 18 auf der zu reinigenden Fläche 16 aufgestützt. Ein Bediener steht auf der zu reinigenden Fläche 16 hinter der Flächen-Reinigungsmaschine 10 und hält diese beispielsweise einhändig an dem Griff 24.
The surface cleaning machine 10 according to the invention functions as follows:
For a cleaning operation, the surface cleaning machine 10 is supported via the cleaning roller 18 on the surface 16 to be cleaned. An operator stands on the surface 16 to be cleaned behind the surface cleaning machine 10 and holds it on the handle 24, for example with one hand.

Der Bediener kann einen Vorwärtsschub in der Vorwärtsrichtung 164 durchführen.The operator can perform a forward thrust in the forward direction 164.

Bei einem Reinigungsbetrieb erzeugt das Sauggebläse 34 einen Saugstrom, welcher in dem Saugkanal 44 und damit in den Bereichen 46, 50 und 52 einen Unterdruck gegenüber dem Außenraum 128 bewirkt.During a cleaning operation, the suction fan 34 generates a suction flow, which in the suction channel 44 and thus in the areas 46, 50 and 52 creates a negative pressure with respect to the outer space 128.

Der Antriebsmotor 78 erzeugt ein Drehmoment, welches über die Getriebeeinrichtung 84 auf die Reinigungswalze 18 übertragen wird. Diese wird rotierend angetrieben. Sie wird insbesondere im Gegenuhrzeigersinn (in Figur 1 angedeutet durch das Bezugszeichen 166) rotierend angetrieben.The drive motor 78 generates a torque which is transmitted to the cleaning roller 18 via the gear mechanism 84. This is driven to rotate. In particular, it is clockwise (in Figure 1 indicated by the reference numeral 166) driven in rotation.

Es ist insbesondere vorgesehen, dass die Reinigungswalze 18 mit einer Umfangsgeschwindigkeit im Bereich zwischen 0,9 m/s und 1,2 m/s und insbesondere mit einer Umfangsgeschwindigkeit größer 0,92 m/s und insbesondere kleiner als 1,15 m/s angetrieben wird.It is provided in particular that the cleaning roller 18 has a peripheral speed in the range between 0.9 m / s and 1.2 m / s and in particular with a peripheral speed greater than 0.92 m / s and in particular less than 1.15 m / s is driven.

Sie wird beispielsweise mit einer Umfangsgeschwindigkeit im Bereich zwischen 0,95 m/s und 1,05 m/s angetrieben. Beispielsweise wird sie mit einer Umfangsgeschwindigkeit von ca. 1 m/s angetrieben.It is driven, for example, with a peripheral speed in the range between 0.95 m / s and 1.05 m / s. For example, it is driven at a peripheral speed of approx. 1 m / s.

Grundsätzlich kann es vorgesehen sein, dass die Umfangsgeschwindigkeit durch einen Bediener einstellbar ist. Bei einer konstruktiv einfachen Ausführungsform legt die Antriebseinrichtung 76 die Umfangsgeschwindigkeit fest.In principle, it can be provided that the circumferential speed can be adjusted by an operator. In a structurally simple embodiment, the drive device 76 defines the peripheral speed.

Die Reinigungswalze 18 weist einen Besatz 56 auf, welcher zusammendrückbar ist. Der Besatz 56 ist insbesondere aus einem textilen Material hergestellt.The cleaning roller 18 has a facing 56 which is compressible. The trim 56 is made in particular from a textile material.

Die Umfangsgeschwindigkeit wie oben erwähnt bezieht sich dann nicht auf einen maximalen Durchmesser der Reinigungswalze 18, sondern auf einen Durchmesser, wenn der Besatz 56 beispielsweise über die Gewichtskraft der Flächen-Reinigungsmaschine 10 zusammengedrückt ist.The circumferential speed, as mentioned above, then does not relate to a maximum diameter of the cleaning roller 18, but to a diameter when the facing 56 is compressed, for example by the weight of the surface cleaning machine 10.

Eine zu niedrige Umfangsgeschwindigkeit bewirkt ein reines Abrollen der Flächen-Reinigungsmaschine auf der zu reinigenden Fläche 16 ohne ausreichenden Reinigungseffekt. Eine zu große Umfangsgeschwindigkeit bewirkt ein Spritzen von Reinigungsflüssigkeit.Too low a circumferential speed causes the surface cleaning machine to simply roll over the surface 16 to be cleaned without an adequate cleaning effect. If the circumferential speed is too high, cleaning liquid will splash.

Die genannten Umfangsgeschwindigkeiten sind insbesondere ausgelegt auf eine Arbeitsgeschwindigkeit (Vorwärtsgeschwindigkeit) des Bedieners von ca. 0,9 m/s.The circumferential speeds mentioned are designed in particular for a working speed (forward speed) of the operator of approx. 0.9 m / s.

Durch die Befeuchtungseinrichtung 116 wird die Reinigungswalze 18 mit Reinigungsmittel aus der Tankeinrichtung 42 befeuchtet. Diese Flüssigkeitsbeaufschlagung ist dabei pumpenfrei und insbesondere magnetventilfrei.The cleaning roller 18 is moistened with cleaning agent from the tank device 42 by the moistening device 116. This application of liquid is free of pumps and, in particular, free of solenoid valves.

Durch Schwerkraftwirkung strömt Reinigungsflüssigkeit aus der Tankeinrichtung 42 zu dem oder den Sammelräumen 132. (Bei einer Ausführungsform, bei der die Tankeinrichtung am Reinigungskopf sitzt, kann die Tankeinrichtung selber einen Sammelraum bilden.)By the action of gravity, cleaning liquid flows out of the tank device 42 to the collecting chamber or chambers 132. (In an embodiment in which the tank device is located on the cleaning head, the tank device itself can form a collecting chamber.)

Bei einer Unterdruckbeaufschlagung an dem Saugkanal 44 mit den Bereichen 50, 52 sorgt die druckwirksame Verbindung zu dem oder den druckgesteuerten Schaltern 118 für eine Öffnung des oder der Fluidwege 146. Es kann sich dann Reinigungsflüssigkeit in dem Verteiler 152 ansammeln und von dort die Reinigungswalze 18 beaufschlagen. Es ist dabei für eine gleichmäßige Beaufschlagung über im Wesentlichen die gesamte Länge der Reinigungswalze 18 längs der Längsachse 70 gesorgt.When the suction channel 44 with the areas 50, 52 is subjected to negative pressure, the pressure-effective connection to the pressure-controlled switch (s) 118 opens the fluid path (s) 146. Cleaning fluid can then collect in the distributor 152 and act on the cleaning roller 18 from there . A uniform application over essentially the entire length of the cleaning roller 18 along the longitudinal axis 70 is ensured.

Durch Kapillarwirkung mittels einem oder mehreren Spaltkanälen 162 kann die gleichmäßige Verteilung unterstützt werden.The uniform distribution can be supported by capillary action by means of one or more gap channels 162.

Durch (manuelle) Sperrung des Sperrventils 139 ist ein Reinigungsbetrieb ohne Flüssigkeitsbeaufschlagung ("Saugbetrieb") möglich.By (manual) blocking of the shut-off valve 139, a cleaning operation without the application of liquid ("suction operation") is possible.

Ein Bediener kann durch Vorgabe der Winkelstellung 160 einstellen, ob aus dem Verteiler 152 Reinigungsflüssigkeit zu der Reinigungswalze 18 strömt oder nicht. Diese Einstellung ist schwerkraftgesteuert, je nach dem, ob die Auslassöffnungseinrichtung 156 bezogen auf die Schwerkraftrichtung oberhalb oder unterhalb der Rinne 154 positioniert ist, wobei gegebenenfalls Kapillarkräfte über den Spaltkanal 162 und ein Unterdruckeffekt durch Anliegen von Fasern des Besatzes 56 an der Auslassöffnungseinrichtung 156 vorliegen.By specifying the angular position 160, an operator can set whether or not cleaning fluid flows from the distributor 152 to the cleaning roller 18. This setting is controlled by gravity, depending on whether the outlet opening device 156 is positioned above or below the channel 154 in relation to the direction of gravity, capillary forces possibly being present via the gap channel 162 and a negative pressure effect due to fibers of the facing 56 on the outlet opening device 156.

Durch Reinigungsflüssigkeit wird Schmutz an der zu reinigenden Fläche 16 aufgeweicht und kann dann über die Reinigungswalze 18 mitgenommen werden.Dirt on the surface 16 to be cleaned is softened by cleaning fluid and can then be taken along via the cleaning roller 18.

Über die Saugmündung 54 oder entsprechende Saugmündungen erfolgt eine Absaugung mittels des hergestellten Saugstroms. An der Abscheidereinrichtung 38 erfolgt eine Trennung in feste Schmutzpartikel und Flüssigkeit. Schmutzflüssigkeit wird in der Tankeinrichtung 40 gesammelt.A suction by means of the suction flow produced takes place via the suction opening 54 or corresponding suction openings. At the separator device 38 there is a separation into solid dirt particles and liquid. Dirty liquid is collected in the tank device 40.

Durch das Gelenk 62 lässt sich beispielsweise auch eine maschinelle Eckenreinigung oder Randreinigung durchführen. Der Gerätekörper 12 ist relativ zu dem Reinigungskopf 14 um die Schwenkachse 64 in dem Schwenkbereich schwenkbar.The joint 62 can also be used, for example, for machine corner cleaning or edge cleaning. The device body 12 is pivotable relative to the cleaning head 14 about the pivot axis 64 in the pivoting range.

Der relativ schwere Antriebsmotor 78 ist bezogen auf einen Normalbetriebsmodus weit unten in der Nähe zu dem Reinigungskopf 14 angeordnet und platzsparend mindestens teilweise an dem Gelenk 62 positioniert. Er lässt sich dabei mindestens teilweise außerhalb des Reinigungskopfes 14 (beabstandet zu der Reinigungswalze 18) positionieren.The relatively heavy drive motor 78 is arranged far down in the vicinity of the cleaning head 14 in relation to a normal operating mode and is at least partially positioned on the joint 62 in a space-saving manner. It can be positioned at least partially outside the cleaning head 14 (at a distance from the cleaning roller 18).

Über das Kehrelement 98 ist Grobschmutz kehrbar, welcher dann durch die Reinigungswalze 18 mitnehmbar ist.The sweeping element 98 can be used to sweep coarse dirt, which can then be carried along by the cleaning roller 18.

BezugszeichenlisteList of reference symbols

1010
Flächen-ReinigungsmaschineArea cleaning machine
1212th
GerätekörperDevice body
1414th
ReinigungskopfCleaning head
1616
zu reinigende Flächesurface to be cleaned
1818th
ReinigungswalzeCleaning roller
2020th
LängsachseLongitudinal axis
2222nd
StabRod
2424
GriffHandle
2626th
Schaltercounter
2828
Gehäusecasing
3030th
HakeneinrichtungHook device
3232
SaugaggregateinrichtungSuction unit device
3434
SauggebläseSuction fan
3636
Motorengine
3838
AbscheidereinrichtungSeparator device
4040
Tankeinrichtung für SchmutzflüssigkeitTank facility for dirty liquid
4242
Tankeinrichtung für ReinigungsflüssigkeitTank facility for cleaning fluid
4444
SaugkanalSuction channel
4646
erster Bereichfirst area
4848
AbzweigungJunction
5050
zweiter Bereichsecond area
5252
dritter Bereichthird area
5454
SaugmündungSuction port
5656
BesatzTrimming
5858
erste Mündungswandungfirst mouth wall
6060
zweite Mündungswandungsecond mouth wall
6262
Gelenkjoint
6464
SchwenkachseSwivel axis
6666
spitzer Winkelacute angle
6868
RotationsachseAxis of rotation
7070
LängsachseLongitudinal axis
7272
InnenhülseInner sleeve
7474
AußenhülseOuter sleeve
7676
AntriebseinrichtungDrive device
7878
AntriebsmotorDrive motor
8080
MotorwelleMotor shaft
8282
AntriebsachseDrive axle
8484
GetriebeeinrichtungTransmission device
8686
DrehzahluntersetzerSpeed reducer
8888
WinkelgetriebeAngular gear
9090
erste Stirnseitefirst face
9292
zweite Stirnseitesecond face
9494
Gehäusecasing
9696
Reinigungswalzen-HalterCleaning roller holder
9898
KehrelementSweeping element
100100
mittlerer Bereichmiddle area
102102
AntriebselementDrive element
104104
Riemenbelt
106106
erster Stiftfirst pen
108108
zweiter Stiftsecond pen
110110
erster Teilfirst part
112112
zweiter Teilsecond part
114114
Spaltgap
116116
BefeuchtungseinrichtungHumidifier
118118
druckgesteuerter Schalterpressure controlled switch
120120
DoppelpfeilDouble arrow
122122
Membranmembrane
124124
SperrelementLocking element
126126
erste Flächefirst surface
128128
AußenraumOutside space
130130
zweite Flächesecond face
132132
SammelraumCollection room
134134
Leitungmanagement
136136
Anschlussconnection
138138
VerteilerleitungDistribution line
139139
SperrventilCheck valve
140140
erste Anschlussstellefirst junction
142142
zweite Anschlussstellesecond junction
144144
Raumroom
146146
FluidwegFluid path
148148
WandungWall
150150
AnlageflächeContact surface
152152
VerteilerDistributor
154154
RinneGutter
156156
AuslassöffnungseinrichtungOutlet opening device
158158
AbgabeöffnungDispensing opening
160160
WinkelstellungAngular position
162162
SpaltkanalGap canal
164164
VorwärtsrichtungForward direction
166166
GegenuhrzeigersinnCounter clockwise

Claims (15)

  1. Surface cleaning machine, comprising at least one cleaning roller (18), a drive device (76) for driving the at least one cleaning roller (18) in rotation, a wetting device (116) for applying cleaning liquid to the at least one cleaning roller (18), and a suction unit device (32) for generating a suction flow, which suction unit device (32) is operatively connected for fluid communication with at least one suction channel (44) and at least one suction mouth (54) which is associated with the at least one cleaning roller (18), characterized in that the wetting device (116) comprises at least one pressure-controlled switch (118) which, in an open position, opens a fluid path (146) for cleaning liquid to the at least one cleaning roller (18) and, in a closed position, blocks the fluid path (146), and in that the at least one pressure-controlled switch (118) is operatively coupled to the at least one suction channel (44) for pressure communication therewith, wherein, when a negative pressure is applied by a suction flow in the at least one suction channel (44), the at least one pressure-controlled switch (118) goes to the open position and/or maintains the open position.
  2. Surface cleaning machine in accordance with claim 1, characterized by at least one collecting space (132) for cleaning liquid, wherein the fluid path (146) that is controllable with respect to opening and closing by the at least one pressure-controlled switch (118) is located between the at least one collecting space (132) and the at least one cleaning roller (18).
  3. Surface cleaning machine in accordance with claim 1 or 2, characterized by a tank device (42) for cleaning liquid which is operatively connected for fluid communication with the fluid path (146) and is, in particular, operatively connected for fluid communication with at least one collecting space (132) for cleaning liquid, and in particular in that cleaning liquid from the tank device (42) is always present at the least one collecting space (132), and in particular in that, in a normal mode of operation of the surface cleaning machine, the tank device (42) is positioned above the at least one cleaning roller (18) relative to the direction of gravity (g).
  4. Surface cleaning machine in accordance with any one of the preceding claims, characterized in that the at least one pressure-controlled switch (118) has a first surface (126) which is operatively connected to the at least one suction channel (44) for pressure communication therewith, and has a second surface (130) which is operatively connected to the outside space (128) for pressure communication therewith, wherein a pressure difference between the first surface (126) and the second surface (130) determines the position of the at least one pressure-controlled switch (118), and in particular in that negative pressure application to the at least one suction channel (44) causes a pressure difference between the first surface (126) and the second surface (130), which pressure difference moves the at least one pressure-controlled switch (118) into the open position and/or maintains the pressure-controlled switch (118) in the open position, and in particular in that the at least one pressure-controlled switch (118) comprises a return device which, when the pressure difference falls below a minimum threshold, effects a return action to the closed position and/or maintains the closed position, and in particular in that the return device is formed by an inherent elasticity of the at least one pressure-controlled switch (118).
  5. Surface cleaning machine in accordance with any one of the preceding claims, characterized in that the at least one pressure-controlled switch (118) comprises a movable membrane (122).
  6. Surface cleaning machine in accordance with any one of the preceding claims, characterized in that the at least one pressure-controlled switch (118) comprises at least one movable blocking element (124) for the fluid path (146) which is arranged at a movable membrane (122) in particular.
  7. Surface cleaning machine in accordance with any one of the preceding claims, characterized in that arranged downstream of the at least one pressure-controlled switch (118) is a distributor (152) for distributing cleaning liquid to the at least one cleaning roller (18), which distributor (152) is operatively connected for fluid communication with the fluid path (146), and in particular in that the distributor (152) comprises at least one channel (154) or is formed by at least one channel (154).
  8. Surface cleaning machine in accordance with claim 7, characterized in that the at least one channel (154) extends at least approximately parallel to a longitudinal axis (70) of the at least one cleaning roller (18) and/or extends at least approximately parallel to an axis of rotation (68) of the at least one cleaning roller (18).
  9. Surface cleaning machine in accordance with claim 7 or 8, characterized in that the at least one channel (154) extends with an outlet opening device (156) over at least 80 % of a length of the at least one cleaning roller (18) and in particular over an entire length of the at least one cleaning roller (18).
  10. Surface cleaning machine in accordance with any one of claims 7 to 9, characterized in that the at least one channel (154) is configured in the form of a half-shell.
  11. Surface cleaning machine in accordance with any one of claims 7 to 10, characterized in that the distributor (152) comprises an outlet opening device (156) which is arranged and configured such that, depending on an angular position of the distributor (152) in relation to the direction of gravity (g), cleaning liquid flows or does not flow out of the distributor (152) to the at least one cleaning roller (18), and in particular in that the angular position of the distributor (152) in relation to the direction of gravity (g) is determined by an angular position (160) of a longitudinal axis (20) of the surface cleaning machine relative to a surface (16) that is to be cleaned.
  12. Surface cleaning machine in accordance with any one of claims 7 to 11, characterized in that wetting of the at least one cleaning roller (18) via the distributor (152) is gravity-controlled.
  13. Surface cleaning machine in accordance with any one of the preceding claims, characterized in that in regard to wetting the at least one cleaning roller (18) by the wetting device (116), the surface cleaning machine is configured to be pumpless.
  14. Surface cleaning machine in accordance with any one of the preceding claims, characterized in that the fluid path (146) comprises at least one slot channel (162) which is, in particular, configured such that a capillary effect occurs for the flow of cleaning liquid, and in particular in that a cleaning substrate (56) of the at least one cleaning roller (18) is in contact, or almost in contact, against an outlet opening device (156) of the at least one slot channel (162), and in particular in that a distributor (152) for cleaning liquid is located upstream of the at least one slot channel (162), relative to a direction of flow for cleaning liquid.
  15. Surface cleaning machine in accordance with any one of the preceding claims, characterized in that in a cleaning operation, the surface cleaning machine is solely supported on the surface (16) that is to be cleaned via a cleaning roller (18) which is driven in rotation.
EP15775242.9A 2014-10-13 2015-10-08 Surface cleaning machine having a damping device Active EP3206549B1 (en)

Priority Applications (1)

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DE102014114809.6A DE102014114809A1 (en) 2014-10-13 2014-10-13 Surface cleaning machine with moistening device
PCT/EP2015/073275 WO2016058901A1 (en) 2014-10-13 2015-10-08 Surface cleaning machine having a damping device

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EP3206549A1 EP3206549A1 (en) 2017-08-23
EP3206549B1 true EP3206549B1 (en) 2021-07-21

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US (1) US10130230B2 (en)
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CN (1) CN106998975B (en)
DE (1) DE102014114809A1 (en)
PL (1) PL3206549T3 (en)
RU (1) RU2653677C1 (en)
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US20170215676A1 (en) 2017-08-03
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CN106998975B (en) 2019-11-08
CN106998975A (en) 2017-08-01
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US10130230B2 (en) 2018-11-20
EP3206549A1 (en) 2017-08-23

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