EP4054393A1 - Bodenreinigungsmaschine und verfahren zum betreiben einer bodenreinigungsmaschine - Google Patents
Bodenreinigungsmaschine und verfahren zum betreiben einer bodenreinigungsmaschineInfo
- Publication number
- EP4054393A1 EP4054393A1 EP19801310.4A EP19801310A EP4054393A1 EP 4054393 A1 EP4054393 A1 EP 4054393A1 EP 19801310 A EP19801310 A EP 19801310A EP 4054393 A1 EP4054393 A1 EP 4054393A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holder
- suction bar
- cleaning machine
- suction
- floor cleaning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 171
- 238000000034 method Methods 0.000 title claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 26
- 238000007373 indentation Methods 0.000 claims description 24
- 238000003780 insertion Methods 0.000 claims description 23
- 230000037431 insertion Effects 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 13
- 238000013461 design Methods 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 5
- 230000001154 acute effect Effects 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012549 training Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 206010012289 Dementia Diseases 0.000 description 1
- 241001417527 Pempheridae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
- A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4002—Installations of electric equipment
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4036—Parts or details of the surface treating tools
- A47L11/4044—Vacuuming or pick-up tools; Squeegees
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
- A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
- A47L11/4077—Skirts or splash guards
Definitions
- the invention relates to a floor cleaning machine, comprising a suction unit device, a suction bar which is fluidly connectable or is connected to the suction unit device, a holder which releasably holds the suction bar, a fixing device for releasably fixing the suction bar on the holder, and an overload protection device, which is assigned to the squeegee.
- the invention also relates to a method for operating a floor cleaning machine.
- WO 2011/057232 A2 discloses a release mechanism for a suction bar in a floor cleaning machine.
- Suction bars are disclosed, for example, in EP 2 559 367 A1, WO 2014/191024 A1, WO 2015/086115 A1, JP 05280785 B2, EP 3 178 363 A1.
- DE 20 2014 011 047 Ul discloses a suction nozzle.
- EP 2 814 370 B1 discloses a floor cleaning machine with a release puller.
- DE 196 11 371 A1 discloses a suction device attachment for wet cleaning of surfaces.
- the invention is based on the object of providing a floor cleaning machine of the type mentioned at the outset, which enables an optimized cleaning operation.
- the overload protection device comprises at least one pivot bearing through which the suction bar can be rotated relative to the holder on the holder in an overload situation.
- the suction bar can evade through the at least one pivot bearing by rotating on the holder before it in particular falls off. This prevents damage to the floor cleaning machine and to the object.
- the at least one pivot bearing has no function in a normal cleaning operation. Only in a (certain) overload situation does it allow the suction bar to move away from the holder.
- the at least one pivot bearing does not necessarily have a function in every overload situation. For example, it can happen that the cleaning machine drives through a passage through which the machine body passes, but the suction bar no longer. If the suction bar hits the boundaries of the passage on both sides, the overload protection device is designed in such a way that it falls off without turning (if it hits both sides at the same time).
- the at least one pivot bearing has an axis of rotation with at least one of the following: the axis of rotation is transverse and in particular perpendicular to a support plane of the suction bar on a floor to be cleaned; the axis of rotation is transverse and in particular perpendicular to a wheel axis of the floor cleaning machine; the axis of rotation is spaced from a center plane of the suction bar, which lies between a first front end and a second front end of the suction bar, based on a fixing position of the suction bar on the holder; the axis of rotation is oriented at least approximately parallel to a central plane which lies between a first face end and a second face end of the suction bar, based on a fixing position of the suction bar on the holder.
- the fixation position is a position of the suction bar with respect to the floor cleaning machine, which enables a proper cleaning operation and a cleaning trip.
- the suction bar is placed (with suction lips) on the surface to be cleaned and can suck off excess fluid (which is particularly contaminated with dirt).
- the at least one pivot bearing is spaced apart from a connection for a suction line, which is arranged on the suction bar and / or stood apart from a center plane of the suction bar, which is arranged between a first front end and a second front end of the suction bar is.
- the suction bar can be rotated relative to the holder in the event of an overload situation.
- at least a first pivot bearing and a second pivot bearing are provided, which are spaced apart from one another. In this way, an evasive movement can be achieved in the event of an impact to the left or to the right.
- a first axis of rotation of the first pivot bearing and a second axis of rotation of the second pivot bearing are at least approximately parallel to one another; based on a fixation position of the suction bar on the holder is a center plane of the suction bar, which lies between a first front end and a second front end of the suction bar, between the first pivot bearing and the second pivot bearing; the first pivot bearing and the second pivot bearing are arranged mirror-symmetrically to a center plane which lies between a first end and a second end of the suction bar; In relation to a fixing position of the suction bar on the holder, there is a connection for a suction line on the suction bar between the first pivot bearing and the second pivot bearing.
- the suction bar has a support area for the holder, and the holder has a contact area for the support area of the suction bar, with the suction bar in particular in a fixed position of the suction bar on the holder via the connection location area is clamped on the holder.
- An assembly or disassembly of the suction bar with respect to the holder can then be achieved in a simple manner. This can be fixed to the holder in a simple manner in a force-locking and / or form-locking manner.
- An overload protection device can be designed in a simple manner.
- the at least one pivot bearing can be implemented in a simple manner.
- the suction bar can be rotated relative to the holder in an overload situation in which the contact area rests on the support area and the suction bar is therefore still on the holder.
- the support area has a flat contact surface and, in particular, the contact area has a flat contact surface for the support area.
- the at least one pivot bearing can be implemented in a simple manner.
- the at least one pivot bearing has a wall which is arranged on the support area of the suction bar, the wall defining a receptacle, and the at least one pivot bearing has a counter element which is arranged on the contact area of the holder, wherein in a fixing position of the suction bar on the holder, the counter-element is positioned in the receptacle.
- the at least one pivot bearing can thereby be implemented in a simple manner when the fixing position of the suction bar on the holder is present.
- the at least one pivot bearing does not hinder the assembly of the suction bar on the holder or does not hinder the dismantling of the suction bar from the holder. A minimized number of components is necessary to form the at least one pivot bearing.
- the receptacle is closed to the support area of the suction bar and is in particular limited by the support area; the receptacle is open in a direction away from the support area; the recording is in a direction away from the holder, based on a fixed position of the suction bar on the holder, limited by the Wan training; the receptacle is open towards the holder, based on a fixing position of the suction bar on the holder; the wall is arched; the wall extends in an angular range of at most 180 °; the wall has a height of at most 5 cm and in particular of at most 3 cm and in particular of at most 2 cm.
- the corresponding counter element is received in the receptacle, a pivot bearing is implemented.
- the arcuate design accordingly enables rotatability. Due to the limited dimensions of the wall and / or due to the open receptacle towards the top and towards the rear, the counter-element can also be guided out of the receptacle in a certain overload situation. For example, the suction bar can then be completely detached from the holder. This effectively prevents damage to objects being hit or to the floor cleaning machine and the squeegee.
- the counter-element is arcuate on an end face facing the wall; the counter element is designed as a finger; the counter element is flat on an underside facing the support area of the suction bar; the counter element is flat on an upper side facing away from the underside; a height of the counter element between an upper side and a lower side is at most 2 cm.
- the at least one pivot bearing can thus be implemented in a structurally simple manner. The number of components required is minimized.
- the counter-element delimits an indentation on the holder, with at least one of the following: a fastening element of the suction bar is positioned in the indentation when the suction bar is in a fixed position on the holder; the indentation has an arcuate boundary; the indentation is delimited by a web facing away from the counter-element.
- At least one tab for connection to the holder is arranged on the suction bar. This allows an additional fixation area to be provided. In this way, for example, tilting of the suction bar relative to the holder (rotation of the suction bar relative to the holder) can be prevented in a simple manner.
- the flap can be used to position the suction bar on the holder, with the at least one flap then also automatically if the flap is correctly positioned Pivot bearing is made. A simple assembly and disassembly of the suction bar can thereby be achieved.
- At least one tab is arranged on the suction bar for connection to the holder, and that the at least one tab is designed as a handle for holding the suction bar.
- the tab can then be used on the one hand to connect to the holder, and on the other hand, when the suction bar is detached from the holder, it can be held and carried by an operator via the at least one tab.
- the at least one tab is designed as a bracket. This results in a weight saving. An operator can easily use the tab as a handle.
- the at least one tab is arranged centrally with respect to the outer end faces of the suction bar.
- the suction bar can be held or carried, so to speak, "balanced".
- a tilt protection can thereby be provided centrally in a simple manner.
- the holder expediently has a holder receptacle for the at least one tab, the at least one holder receptacle being designed to support the tab. In this way, it is possible in particular to achieve a support against the rotation of the suction bar relative to the holder.
- the holder receptacle is designed to support the at least one tab downwards towards a floor to be cleaned; the holder receptacle is formed to support the at least one tab upwards in a direction away from a floor to be cleaned; the holder receptacle is open on an insertion side; the holder receptacle is assigned to an insertion bevel on an insertion side.
- one or more support points can be provided with regard to the holding of the suction bar by the holder.
- a tilt protection can be achieved in this way in a simple manner.
- the holder receptacle which is open on the insertion side, allows at least one tab to be pushed into the holder receptacle. This results in a simple assembly and disassembly.
- Insertion is facilitated by the lead-in bevel. This results in an optimized usability for an operator.
- the holder has a contact area and the squeegee has a contact area for the contact area, the contact area being spaced from the holder receptacle for the at least one tab.
- the contact area is spaced apart in height. This results in a further support point for the suction bar on the holder and, in particular, a tilt protection can be achieved in a simple manner.
- a housing box is arranged on the holder, to which a suction line is connected, and if the housing box has a connection for a when the suction bar is in a fixed position on the holder Suction line is positioned on the squeegee.
- the connection for a suction line is part of the suction bar.
- the housing box is part of the holder. This makes it possible for a suction line to remain on the device side. The suction line then does not have to be led up to the suction bar and connected to the suction bar.
- a partial or complete detachment of the suction bar from the holder can be achieved in a simple manner in the event of an overload, without the suction line (in particular in the form of a suction hose) having to be taken along.
- the fluid-effective connection between the suction line and the suction bar takes place via the connection between the housing box and the connection for a suction line on the suction bar.
- the housing box has a support surface for the suction bar; the connection for a suction line on the suction bar has an inclined surface on which a connection opening is positioned; the housing box is spaced apart from the at least one area of attack of the fixing device; a holder receptacle for at least one tab of the suction bar for fixing the suction bar on the holder is arranged in the area of the housing box; the holder receptacle is at a height from the housing box; when the suction bar is in a fixed position on the holder, a fluid-active connection between a suction line and a connection for a suction line on the suction bar is established and, in particular, is established automatically; the holder receptacle is adapted to the at least one tab in such a way that when the suction bar is fixed to the holder with at least one tab received in the holder receptacle, the holder is automatically positioned relative to the suction bar so that the at least one pivot
- a fluid-effective connection between the device and the suction bar can be established and released in a simple manner without, for example, an additional suction line having to be connected to the suction bar or having to be released.
- connection can then be established automatically in a simple manner when the suction bar is brought into the fixing position on the holder, or it can be automatically released in a simple manner.
- the fixing device is designed in such a way that, in a fixing position of the suction bar on the holder, there is a frictional connection between the holder and the suction bar. If, in an overload situation, a certain threshold value of the force load is exceeded, which is then specified by the frictional connection, a relative movement between the suction bar and the holder can be achieved in order to avoid the overload situation and prevent damage to the floor cleaning machine and the object. If necessary, the suction bar can be detached from the holder.
- the fixing device is designed in such a way that in a fixing position of the suction bar on the holder a shape There is a closing connection between the holder and the suction bar and in particular is present in addition to a frictional connection.
- the object mentioned at the beginning is achieved according to the invention, and in the floor cleaning machine mentioned at the beginning, in that the fixing device is designed such that in a fixing position of the suction bar on the holder there is a positive connection between the holder and the suction bar, and in addition there is a frictional connection between the holder and the suction bar.
- the suction bar can be mounted on the holder or removed from it in a simple manner. Furthermore, in the event of an overload, the suction bar can be released from the holder in a simple manner. In particular, the suction bar can easily be rotated relative to the holder in an overload situation.
- the fixing device comprises at least one clamping element which is arranged on the suction bar and via which the holder can be clamped to the suction bar.
- the suction bar can be mounted or dismantled on the holder in a simple manner.
- a frictional connection can be achieved in a simple manner.
- the suction bar has a support area for the holder and the holder has a contact area for the support area of the suction bar
- the at least one clamping element is designed so that the contact area of the holder between the support area and the at least one Clamping element can be clamped.
- a clamping connection (and thus a non-positive connection) can then be achieved by means of the clamping element in a simple manner through the transition from an open position to a closed position, or this can be released by the reverse procedure.
- the at least one clamping element is designed as a clamping lever and in particular a special eccentric lever;
- the at least one clamping element has a pivoting element which has a clamping surface and which is pivotably mounted on a bearing element;
- a bearing element of the at least one clamping element is slidably mounted on the suction bar;
- a direction of displacement of the bearing element is oriented transversely and perpendicularly to a pivot axis of the pivot element;
- the bearing element is supported by a spring device on the suction bar and in particular supported on an inside of a support area of the suction bar;
- a spring force of the spring device exerts a clamping force for the frictional connection of the holder to the suction bar;
- a direction of displacement of the bearing element and / or a direction of force of the spring device is oriented at least approximately parallel to an axis of rotation of the at least one pivot bearing.
- a frictional connection can thereby be achieved in a structurally simple manner.
- a simple assembly or disassembly of the suction bar is possible. It is advantageous if at least a first clamping element and a second clamping element, which is spaced from the first clamping element, are seen in front. A clamping at spaced-apart fixation points can thereby be achieved.
- the first clamping element and the second clamping element are arranged outside a center plane of the suction bar, which lies between a first end and a second end of the suction bar; the first clamping element and the second clamping element are arranged mirror-symmetrically to a center plane of the suction bar, which lies between a first face end and a second face end; a connection for a suction line is positioned between the first clamping element and the second clamping element; the first clamping element and the second clamping element lie between a first pivot bearing and a second pivot bearing.
- a symmetrical arrangement can be achieved in this way, which enables the suction bar to be fixed to the holder in an optimized manner for a cleaning run, with ease of assembly and disassembly for an operator. Furthermore, in an overload situation, a force evasive movement and release of the suction bar from the holder can be achieved in a simple manner.
- the fixing device then comprises at least one first form-locking element, which is arranged on the suction bar, and at least one with the first form-locking element element corresponding second form-locking element which is arranged on the holder. In this way, for example, possible movements can be specified for a rotation of the suction bar on the holder. The result is an improved fixation.
- the at least one first form-fit element and the at least one second form-fit element are arranged and designed so that when the suction bar is in a fixed position on the holder with a frictional connection established between the suction bar and the holder, there is also a form-fit connection with the at least one first form-fit element and the at least one second form-fitting element is produced.
- a form-fit connection also results automatically. This results in an optimized fixation of the suction bar on the holder for a cleaning trip.
- the at least one first form-locking element is arranged on the support area of the suction bar for the holder.
- the at least one first form-locking element and the at least one second form-locking element are designed to be fitted in such a way that, when the suction bar is in a fixed position on the holder, a movement away of the suction bar in a blocking direction is blocked by form-locking, and in particular in a single blocking direction is blocked, with at least one of the following: the blocking direction is at least approximately parallel to one
- the blocking direction is at least approximately parallel to an insertion direction of at least one tab of the suction bar into a holder receptacle of the holder; the blocking direction is transverse and in particular perpendicular to an axis of rotation of the at least one pivot bearing; the blocking direction is at least approximately parallel to a chassis axis of the cleaning machine; the blocking direction is at least approximately parallel to a support area of the suction bar for the holder; the blocking direction is transverse and in particular perpendicular to a wheel axis; the blocking direction is a unidirectional direction away from the holder.
- the at least one second form-fit element can be detached from the at least one first form-fit element.
- the form-fit connection thus results on the one hand in a secure fixation which, on the other hand, can be released in an overload situation.
- the at least one first form-locking element is formed by an elevation on the suction bar and the at least one second form-locking element is a nose on the holder. It is then advantageous if the at least one second form-fit element has a blocking area for the at least one first form-fit element, with which the second form-fit element rests against the first form-fit element in the case of a form-fit connection, and the at least one second form-fit element has an inclined plane for crossing the min at least one first form-locking element. In this way, in a particular overload situation, the second form-fit element can be brought over the first form-fit element in order to cancel the form-fit. The suction bar can then be partially or completely detached from the holder in order to be able to avoid an overload situation.
- the suction bar rotates against the holder (via the at least one pivot bearing) and / or falls off the holder.
- the form of movement depends on the overload situation, and in particular on how a suction bar hits an object or hooks onto the object.
- a test device is provided for a blockage on a suction path. It can thus be seen whether there is a blockage in a suction path. If necessary, it can also be recognized by the testing device whether the suction bar has become detached from the holder.
- the testing device comprises at least one pressure sensor which is arranged on the suction path and in particular is arranged outside the suction bar.
- a special situation can be recorded via the at least one pressure sensor.
- a further pressure sensor can be provided on a blower.
- the corresponding situation can be recorded using a differential measurement.
- the suction bar can be partially or completely detached from the holder in an overload situation. If the pressure sensor is arranged outside of the suction bar, then this can remain on the device and a signal-effective connection with the device is automatically given, even if the squeegee has come loose.
- the pressure sensor is arranged on a pressure line which can be or is connected to the suction bar and, in particular, is connected loosely.
- the pressure on the suction bar and in particular on the suction space of the suction bar can be detected via the pressure line. This can then be evaluated.
- the pressure sensor does not then have to be arranged on the suction bar, but can be positioned outside the suction bar.
- connection for a suction line on the suction bar has a connection for the pressure line. In this way, to a certain extent, the pressure situation of a suction bar can be measured at a distance from the suction bar.
- the pressure line is connected to a suction line. This results in a simple constructive training.
- a floor cleaning machine comprising a chassis, a suction unit device, a suction bar which can be or is fluidly connected to the suction unit device, and a holder which is connected to the chassis and which holds the suction bar.
- the invention is based on the object of providing a floor cleaning machine of the type mentioned, which has advantageous cleaning properties.
- the suction bar (with its suction lips) must be aligned at the correct angle to the surface to be cleaned. Due to manufacturing tolerances, forces during a cleaning operation and different requirements depending on the type of floor, it can be beneficial if a variable specification is possible. For example, the squeegee can suck in during operation and tilt slightly in the direction of travel.
- an adjustable, lockable pivot position of the suction bar can be specified.
- the suction bar can then be set, for example during assembly and / or during maintenance work, and / or directly by an operator so that the optimized cleaning result is obtained.
- the solution according to the invention results in increased variability for the floor cleaning machine in order to achieve an optimized suction result and also to enable adaptation to actual circumstances.
- a pivot axis of the pivot joint is oriented at least approximately parallel to a support plane of the suction bar on a floor to be cleaned; the pivot axis is oriented at least approximately parallel to a wheel axis; the pivot axis is oriented transversely and in particular perpendicular to a forward direction of travel.
- the holder in principle, it is possible for the holder as a whole to be pivotably arranged on the chassis of the floor cleaning machine.
- the swivel joint is then a swivel joint between the chassis and the holder. It is also possible for the swivel joint to be formed between the suction bar and the holder.
- the holder is constructed in several parts and the swivel joint is integrated into the holder.
- the holder can on the one hand be firmly connected to the chassis (whereby a height adjustability of the holder with respect to the chassis can optionally be provided), and furthermore the suction bar can be connected to the holder in particular via a support area.
- This makes it possible, in particular, in a simple manner to fix the suction bar to the holder via a corresponding fixing device, and an overload protection device as described above for the suction bar on the holder can be provided in a simple manner.
- the pivotability for angle adjustment for an optimized cleaning result is then completely integrated into the holder.
- the holder has a first part and a second part, the second part comprising a contact area for the suction bar, the second part being connected to the first part via the pivot joint and the second part being lockable relative to the first part is pivotable.
- An angular position (pivoting position) of the suction bar relative to the chassis and relative to the floor to be cleaned can thus be set in a simple manner.
- the result is a simple structural design for the corresponding pivoting mechanism.
- the fixing device is (in particular directly) connected to the first part and the second part. In this way, a swivel position can be set and also determined in a simple manner.
- the holder has a fastening part which is fixed to the chassis and has an intermediate part which comprises the first part, the intermediate part being oriented at an angle to the fastening part, the intermediate part being spaced from the chassis , and an area of engagement on the detection device for an operator lies above an upper side or above a lower side of the intermediate part.
- "Above” means that there is a distance to the top or bottom and the top or bottom delimits the corresponding space.
- the fixing device can be accessed in a simple manner by an operator in order to set and determine a specific pivot position of the suction bar. Above the upper side or above the underside there is a space via which the locking device can be accessed, in particular with a tool.
- the locking device comprises at least one pin element, which is spaced from a pivot axis of the swivel joint and is connected to the first part and the second part, with a height position of the at least one pin element (on the first part and / or the second Part) defines a pivot position of the second part to the first part (and thus also defines an angular position of the suction bar to the chassis), in particular with at least one of the following: the at least one pin element is designed as an adjusting screw; the at least one pin element is guided on the first part and / or the second part via a thread and / or is provided with a lock nut; a compression spring device sits between the first part and the second part in the region of the at least one pin element and is supported on the first part and the second part.
- the at least one pin element is arranged at a distance from the suction bar and is positioned, for example, between a fastening part and a holding part of the holder. This results in improved access for an operator in order to be able to act on the at least one pin element, for example using a corresponding tool.
- a method for operating a floor cleaning machine in which, in the event of an overload, the suction bar, which is held on a holder, can be rotated against the holder via the at least one pivot bearing.
- the method according to the invention has the advantages already explained in connection with the device according to the invention.
- Figure 1 is a plan view of an embodiment of a fiction, contemporary floor cleaning machine
- FIG. 2 shows a bottom view of the floor cleaning machine according to FIG. I;
- FIG. 3 shows a suction bar of the floor cleaning machine according to FIGS.
- Figures 1, 2 in a fixing position on a holder of Floor cleaning machine in a perspective Dar position;
- FIG. 4 shows a view similar to FIG. 3 in an exploded view (the position of clamping elements on the suction bar corresponds to a position in a fixing position);
- FIG. 5 shows the suction bar according to FIG. 3 with clamping elements in such a position that the suction bar can be fixed to a holder;
- FIG. 6 shows a plan view of the suction bar according to FIG. 3 and the holder without suction line;
- FIG. 7 shows an enlarged illustration of an area A according to FIG. 6;
- FIG. 8 shows a sectional view along the line 8-8 according to FIG. 5 (with the clamping elements "open”);
- FIG. 9 shows a sectional view along the line 9-9 according to FIG. 7;
- FIG. 10 shows a sectional view along the line 10-10 according to FIG. 7;
- FIG. 11 shows a sectional view along the line 11-11 according to FIG. 7, wherein in FIGS. 7 to 11 a fixing position of the suction bar on the holder is shown;
- FIG. 12 is a view similar to FIG. 10 in an intermediate state in which the suction bar is released from the holder;
- FIG. 13 shows an enlarged illustration of a region of a holder receptacle of a holder for receiving a tab of the suction bar
- FIG. 14 shows a partial view of an exemplary embodiment of a suction line with a connected pressure line
- FIG. 15 shows a perspective illustration of a further exemplary embodiment of a holder with a suction bar held
- FIG. 16 shows a sectional view in the sectional plane B according to FIG. 15.
- FIG. 17 shows a sectional view in the sectional plane C according to FIG. 15.
- FIGS. 1 and 2 An exemplary embodiment of a cleaning machine according to the invention, which is shown in FIGS. 1 and 2 and shown in partial representation in FIGS. 3 to 14 and is denoted by 10, is a scrubber-drier.
- the cleaning machine 10 has a chassis 12. On the chassis 12, a rear wheel device 14 is arranged with a device 16 left rear wheel 80 and right rear wheel 20 based on a forward travel direction.
- the cleaning machine 10 is designed as a ride-on cleaning machine.
- a driver's seat 26 is arranged on the chassis 12. A driver sitting in the driver's seat 26 can access the steering wheel 24.
- the cleaning machine 10 is designed to be self-propelled. For this purpose, it has a motor drive such as an internal combustion engine or an electric motor.
- (at least) one cleaning tool 28 is arranged on the chassis 12 (FIG. 2).
- the at least one cleaning tool 28 is a roughing tool.
- the roughing tool is in particular provided with appropriate bristles.
- the cleaning tool 28 rotates about an axis of rotation 30 when the cleaning machine 10 is in operation.
- This axis of rotation 30 of the cleaning tool 28 is in particular oriented transversely to a wheel axis 32 of the rear wheel device 14. It can be oriented perpendicular to this wheel axis 32, or inclined at a small angle, for example in the order of magnitude of 5 ° to 10 °, to this perpendicular to the wheel axis 32.
- the cleaning machine 10 has a motor drive for rotating the cleaning tool 28 about the wheel axle 32.
- the cleaning machine 10 comprises a dispensing device 34 for cleaning liquid onto a floor 36 to be cleaned (see FIG. 8).
- a nozzle device is arranged on the cleaning machine 10, via which the floor 36 to be cleaned can be hit directly with cleaning liquid.
- the cleaning tool 28 is acted upon with cleaning fluid.
- the cleaning liquid is in particular water to which a surfactant cleaning agent, for example, can optionally be added.
- a tank device for cleaning liquid is arranged on the chassis 12.
- a suction bar 40 (squeegee) is held on the chassis 12 via a holder 38 (FIG. 2).
- the cleaning machine 10 has a suction unit device 42 (see FIG. 1) with a fan and a fan motor.
- the fan has (at least) one impeller which is driven in a rotational movement by the fan motor. This creates a suction flow. This acts on the suction bar 40 to suck up liquid from the base 36.
- the suction unit device 42 has (at least) one dirty fluid tank 44 assigned to it, which receives the suctioned fluid. If necessary, a separator is provided.
- the holder 38 is firmly connected to the chassis 12. In particular, it is arranged centrally in relation to a width direction 46 of the chassis 12 (which is parallel to the wheel axis 32).
- the holder 38 is arranged and / or configured in such a way that a height position of the suction bar 40 relative to the floor 36 to be cleaned is adjustable.
- an operating position is then provided in which the suction bar 40 is placed on the floor 36 to be cleaned, and a spaced position of the suction bar 40 to the floor 36 is provided.
- the cleaning machine 10 can drive on a surface without the suction bar 40 touching the surface and being subject to unnecessary wear.
- the suction bar 40 is arranged downstream of the at least one cleaning tool 28 (in particular with respect to the forward direction of travel 16) on the chassis 12.
- cleaning fluid is applied to the floor 36 to be cleaned in the area of the cleaning tool 28.
- excess liquid can be sucked up on a specific floor area over which the cleaning machine 10 runs.
- the suction bar 40 is arranged in the area of a rear end 48 Ren.
- the rear end 48 faces away from a front end 50, with the front wheel 22 in the area of the front end 50 is positioned.
- the suction bar 40 is also arranged after the rear wheel device 14.
- the suction bar 40 is arranged in front of the rear wheel device 14 in relation to the forward direction of travel 16 (and is arranged downstream of the at least one cleaning tool 28).
- the holder 38 (compare, for example, FIGS. 3 and 4) comprises a fastening part 52 with which it is fixed to the chassis. As mentioned above, the fixation can be fixed or variable in height.
- the fastening part 52 is seated on an intermediate part 54.
- the fastening part 52 is oriented at an angle to the intermediate part 54, which is, for example, of the order of magnitude of 150 °.
- a holding part 56 which is used to releasably fix the suction bar 40, is seated on the intermediate part 54.
- the fastening part 52 is firmly connected to the chassis 12, or it sits on a height adjustment device which is connected to the chassis 12, and via which in particular the suction bar 40 can be lowered onto the floor 36 to be rei ning.
- the holding part 56 is oriented transversely to the intermediate part 54.
- a width of the intermediate part 54 in a width direction is smaller than a corresponding width of the holding part 46 in this direction.
- the combination of intermediate part 54 and holding part 56 is T-shaped.
- the holding part 56 comprises a contact area 58 for the suction bar 40.
- the suction bar 40 has a corresponding contact area 60.
- the contact area 58 can be placed on the contact area 60.
- the suction bar 40 jammed with the holder 38 via the contact area 58. This is explained in more detail below.
- the contact area 58 has, for example, a flat contact surface 64 for the contact area 60 of the suction bar 40 (compare, for example, FIG. 9).
- the holding part 56 is flat. A surface of the holding part 56 opposite the contact surface 64 is at least partially planar.
- a housing box 66 is connected in a central area of the holding part 56.
- the housing box 66 is open to the contact surface 64 and is open to a front side 68. It has opposite side walls 70 which are triangular. It is closed on the open side towards the contact surface 64 by a cover 72.
- the cover 72 is oriented at an acute angle 74 (see FIG. 11) to the contact surface 64. This acute angle 64 is, for example, of the order of 25 °.
- a height of an interior space 76 of the housing box 66 increases steadily towards the front side 68.
- a connector 78 is arranged on the cover 72 of the housing box 66.
- a suction line 80 which is fluidly connected to the suction unit device 42, is connected to this connection piece 78. In FIGS. 6, 7, 11, this suction line is not shown for reasons of illustration.
- the suction line 80 is a "machine-side" suction line 80. It is not connected directly to the suction bar 40, but via the housing box 66.
- the housing box 66 with the nozzle 78 and the connected suction line 80 forms a machine-side connection of the suction unit device 42 to the suction bar 40 . If the suction bar 40 is removed from the cleaning machine 10 after the fixing position 62 has been released, or if it is released from the cleaning machine 10 after an overload situation (this will be explained in more detail below), then the suction line 80 remains on the cleaning machine 10 and remains in particular connected to the housing box 66, while a corresponding suction path is separated from the suction bar 40, that is to say there is no longer any fluid-effective connection.
- the suction bar 40 has a connection 82 for the suction line 80. This is explained in more detail below.
- the holder 38 has a holder receptacle 84 on the holding part 56 at a distance from the contact area 58 (FIGS. 11, 13).
- the holder receptacle 84 serves to receive (at least) one tab 86 of the suction bar 40.
- the holder receptacle 84 is open to a front side 88 which, in the fixing position 62, faces the suction bar 40. It is closed on all other pages.
- the holder receptacle 84 has a wall 90 which has a rear wall 92a opposite the front side 88. It also has a bottom wall 92b which is oriented transversely to the rear wall 92a. At a distance from the bottom wall 92b, it has a top wall 92c. This top wall 92c is in particular parallel to the bottom wall 92b.
- the holder receptacle 84 is closed by opposing side walls (not visible in the drawing).
- the holder receptacle 84 is adapted in their dimensions to the bracket 86 is.
- the tab 86 is immersed in a corresponding opening 94 of the holder receptacle 84 (compare in particular FIG. 13).
- the opening 94 is formed between the rear wall 92a, the bottom wall 92b, the top wall 92c and the corresponding side walls.
- the holder receptacle 84 is designed in particular in such a way that it forms a positioning aid for the suction bar 40 on the holder 38. Demented In other words, the play of the tab 86 in the opening 94 is kept low.
- the fixing position 62 can also be established accordingly.
- the holder receptacle 84 is assigned an insertion bevel 96 on the front side 88, which is an insertion side (FIG. 13).
- the tab 86 of the suction bar 40 can be positioned in the opening 94 in an insertion direction 98.
- the insertion bevel 96 has at least one wall 100 which is oriented obliquely to the insertion direction 98 in order to facilitate insertion.
- opposing walls 100 are provided, each of which is oriented at an angle to the direction of insertion 98.
- the insertion bevel 96 forms a type of insertion funnel for the tab 86 on the holder receptacle 84.
- the holder receptacle 84 is in a longitudinal direction 102 (see Figure 10), which is parallel to the insertion direction 98, at a distance from the contact area 58 with its contact surface 64. As a result, a further support area for the suction bar 40 is spaced from the contact surface 64 provided in the fixing position 62 on the holder 38.
- the holder receptacle 84 is spaced apart in a height direction 104 (see FIG. 10) from the contact area 58 and in particular the contact surface 64 (see FIGS. 10 and 13).
- the holder receptacle 84 with its opening 94 to adjoin the contact surface 64 directly and, for example, the contact area 58 to form the cover wall 92c on an inner side on which the contact surface 64 is also located.
- the further support of the suction bar 40 via the tab 86 in the holder receptacle 84 also prevents, in particular, an inclination of the suction bar 40 on the holder 38 in the fixing position 62.
- the holder 38 and in particular the holding part 56 is at least approximately mirror-symmetrical to a central plane 106 (FIG. 4).
- the holding part 56 of the holder 38 has a finger 108 on the outside of the contact area 58.
- the finger 108 delimits the holding part 56 laterally.
- the finger 108 is arcuate on an end face 110 and is convex arcuate.
- An indentation 112 adjoins the finger 108 in the direction of the central housing box 66. This indentation 112 is rounded, arcuate; it has a concave border.
- the indentation 112 is delimited by a web 114 or merges into this web.
- the end face of the finger 110 and a corresponding end face of the web 114 are spaced apart by the indentation 112, a continuous transition being present over the concave delimitation.
- the contact area 58 has an area 116.
- a further indentation 118 is located between this area 116 and the web 114.
- This further indentation 118 is, for example, cuboid with a rounded back.
- the further indentation 118 has, in particular, a smaller width in a width direction 120 of the holding part 56 than the indentation 112.
- the named structure repeats itself with further indentation, web, indentation, finger.
- This geometric design of the holding part 56 is adapted to the suction bar 40 in order to be able to fix it in the fixation position 62, and in order to be able to partially or completely release the suction bar 46 from the fixation position 62 on the holder 38 in an overload situation.
- At least one nose 122 is arranged on the holding part 56 in the contact area 58 and, with reference to the fixing position 62, facing the suction bar 40 (FIGS. 10, 12).
- two lugs 122 are provided in a mirror-symmetrical arrangement with respect to the central plane 106.
- a nose 122 is arranged on the area 116.
- the corresponding nose 122 is used to produce a form-fit connection, in particular in the fixing position 62 of the suction bar 40 on the holder 38.
- the suction bar 40 has corresponding counter-elements, namely a first form-fit element 124 assigned to a nose 122, with the assigned nose 122 then having a second Form-fitting element for a corresponding form-fitting connection. This is explained in more detail below.
- a nose 122 is, for example, wedge-shaped.
- the corresponding nose 122 has a blocking area 126a for the first form-locking element 124, and an inclined plane 126b, which connects to the blocking area 126a.
- the first interlocking element 124 can be passed over the inclined plane 126b. This is explained in more detail below.
- the blocking region 126a is formed on the "steep" flank and the inclined plane 126b is formed on the "flat" flank.
- a height of the nose 122a above the contact surface 64 increases along the inclined plane 126b in a direction 128 up to the blocking area 126a.
- the direction 128 is perpendicular to the width direction 120 and in particular also parallel to the insertion direction 98.
- the suction bar 40 has a bar body 130.
- the beam body 130 extends between a first end 132 and a second end 134 along an axis of extension 136.
- the suction bar 40 is curved so that the axis of extension 136 is correspondingly curved.
- the suction bar 40 has an apex area 138, based on which the suction bar 40, when a cleaning machine 10 is seated in the fixing position 62, is convex in relation to a direction from the front end 50 to the rear end 48 of the cleaning machine 10 , that is to say curves in the direction of the front end 50.
- the suction bar 40 has such a length in the axis of extension 136 that it protrudes beyond the chassis 12 on the left and right (compare FIGS. 1 and 2).
- suction bar 40 does not protrude significantly beyond the rear end 48 of the cleaning machine 10.
- the suction bar 40 with its bar body 130 is designed in particular at least approximately mirror-symmetrically to a center plane 140, this center plane 140 being located centrally between the first end 132 and the second end 134.
- a roller element 142 is arranged in each case on the beam body 130 in a region of the front ends 132, 134, or this roller element 142 forms the front ends 132, 134 in each case.
- the roller element 142 comprises (at least) one roller 144 which, when the cleaning machine 10 is in operation, roll on the floor 36 to be cleaned can. This provides additional support for the suction bar 40.
- the corresponding rollers 144 of the roller elements 142 are arranged in such a way that they are outside of a cleaning liquid liquor. They point outward in a direction from the front end 50 to the rear end 48.
- a roller 146 which is used to roll on a wall, is also arranged in each end region of the roller element 142.
- the rollers 146 form a type of side stop buffer.
- the roller element 142 further comprises a handle and in particular a bow-type handle 148. This is positioned between the rollers 144 and 146.
- Contact elements 150 for the floor 36 to be cleaned are arranged on the beam body 130 of the suction beam 40. When the cleaning machine 10 is in suction mode, these rest on the floor 36 (FIG. 8). They define a support plane 152 for the floor 36.
- first contact element 150a (first suction lip) is provided, which points outwards (in the direction from the front end 50 to the rear end 48).
- a second contact element 150b (second suction lip) is provided, which points to the front end 50 in the direction from the rear end 48 to the front end 50 of the cleaning machine 10 (in the fixing position 62 of the suction bar 40).
- the second contact element 150b faces the cleaning tool 28.
- the contact element 150b can be provided with recesses.
- a suction space 154 is formed between the contact elements 150a and 150b. In a suction operation of the cleaning machine 10, this suction space 154 is acted upon by a suction flow which is provided by the suction unit device 42. As a result, excess liquid can correspondingly be sucked off from the base 36.
- a bar 156 is arranged on the beam body 130.
- the bar 156 is removable from the beam body 130.
- Fasteners 158 are provided for connection.
- the fasteners 158 are screws.
- the bar 156 is firmly connected to the beam body 130 via the fastening elements 158.
- the contact elements 150 can be replaced.
- connection 82 for the suction line 80 is arranged on the central plane 140 of the suction bar 40.
- This connection 82 is adapted to the housing box 66.
- an elevation 160 is arranged on the beam body 130.
- This elevation 160 has an inclined surface 162.
- a connection opening 164 is positioned on the inclined surface 162. The connection opening 164 is in fluid communication with the suction chamber 154.
- the housing box 66 sits above the elevation 160, a fluid-active connection being established between the suction line 80 and the connection opening 164.
- the elevation 160 can be pushed into the housing box 66 to a certain extent (with the tab 86 then also being pushed into the holder receptacle 84 at the same time).
- the connection 82 and the housing box 66 are in particular formed in such a way that when they are pushed into one another in the fixing position 62, a fluid-effective and also fluid-tight connection is automatically achieved.
- a corresponding seal is arranged in particular on the housing box 66 and / or on the connection opening 164, which ensures a fluid-tight connection and, in particular, ensures automatic sealing in the fixing position 62.
- the housing box 66 has a support surface 173 via which it can be supported on the support area 60 of the suction bar 40 in the fixing position 62.
- the tab 86 is arranged symmetrically to the center plane 140 on a side of the beam body 130 facing away from the contact element 150a. It is thus arranged centrally on the suction bar 40.
- the tab 86 is designed as a bracket. It has a longitudinal web 166 which is spaced apart from the beam body 130.
- the bracket 86 is connected to the beam body 130 via spaced transverse webs 168a, 168b, which are spaced apart from one another.
- a free space 170 is located between the longitudinal web 166 and the transverse webs 168a, 168b.
- the tab 86 is designed as a handle, via which an operator can carry the suction bar 40. As mentioned, it is designed in particular as a bow handle.
- the support area 60 of the suction bar which is used to abut the abutment area 58 of the holder 38, is formed on the bar 156 in one embodiment.
- the support area 60 has an essentially flat contact surface 172 for the contact surface 64 of the holding part 56.
- the tab 86 is offset in height relative to the contact surface 172 in a direction towards the support plane 152. In an alternative embodiment, an upper side of the tab 86 lies on the same plane as the contact surface 172.
- the tab 86 protrudes beyond the beam body 130.
- a fixing device 174 is provided for fixing the suction bar 40 on the holder 38 and for securing the fixing position 62.
- the fixing device 174 has a first clamping element 176 and a second clamping element 178 spaced apart from the first clamping element.
- the first clamping element 176 and the second clamping element 178 are in particular arranged mirror-symmetrically to the center plane 140.
- the connection 82 is seated on the suction bar 40 between the first clamping element 176 and the second clamping element 178.
- the first clamping element 176 and the second clamping element 178 are each designed as clamping levers and in particular eccentric levers.
- the first clamping element 176 and the second clamping element 178 each comprise a bearing element 180.
- This bearing element 180 is mounted on the suction bar 40 and in particular on the bar body 130 so as to be displaceable in a displacement direction 182.
- the bearing element 180 has a first area 184 which protrudes upward beyond the support area 60 and thereby protrudes beyond the bar 156.
- a pivot element 194 is pivotably mounted on a pivot bearing 192 in the first region 184.
- a pivot axis 196 is oriented transversely and in particular perpendicular to the direction of displacement 182.
- the pivot element 194 has a clamping surface 198 which is a contact surface for the holding part 56 and is facing away from the contact surface 64 for the contact area 58.
- the clamping surface 198 By means of the clamping surface 198, the holding part 56 of the holder 38, which then rests against the support area 60, can be clamped between the pivot element 194 and the support area 60.
- the clamping surface 198 is spaced apart from the pivot axis 198.
- a ring element 200 is arranged on the third region 190 of the bearing element 180.
- a spring device 202 is supported on the ring element 200.
- the spring device 202 is also supported on an inner side 204, which is opposite the ring element 200, on the beam body 130.
- FIGS. 3, 4, 6, 7, 9, 10 An open position of the clamping elements 176, 178 is shown in FIGS. 3, 4, 6, 7, 9, 10 a fixing position is shown which corresponds to the fixing position 62 of the suction bar 40 on the holder 38.
- the pivot element 94 presses the contact area 58 of the holding part 56 of the holder 38 against the support area 60 of the suction bar 40 via its clamping surface 198 and thereby clamps the suction bar 40 with the holder 38 in a force-locking manner .
- the spring device 202 is arranged and designed in such a way that it strives to press the bearing element 180 away from the inside 204 and thus to press the clamping surface 198 in the direction against the contact surface 172 on the suction bar 40. This in turn becomes the holding part 56 clamped between the clamping surfaces 198 of the clamping elements 176, 178 and the beam body 130.
- the spring device 202 is designed and arranged in such a way that a spring force 206 (see FIG. 9) acts in a direction away from the inside 204 and away from the support plane 152.
- the first form-locking elements 124 on the suction bar 40 are assigned to the lugs 122 as second form-fit elements.
- the corresponding second form-locking elements 124 which are arranged symmetrically to the center plane 140 and are aligned with the lugs 122, are formed as elevations over the contact surface 172.
- a positive connection can be achieved via them.
- the blocking region 126a of a nose 122 rests against the associated first form-fit element 124. A movement of the suction bar 40 in one direction 208 is thereby blocked. This direction 208 is a direction opposite to the direction 128.
- An overload protection device is assigned to the suction bar 40. This ensures that the suction bar 40 can be partially or completely detached from the holder 38 in an overload situation.
- a solution is possible through the frictional connection of the suction bar 40 with the holder 38, that is to say the frictional connection can be canceled when a corresponding acting force exceeds the force of the frictional connection.
- This force of the frictional connection can be adjusted in particular by means of a corresponding design and arrangement of the spring device 202.
- the form-fit connection by means of the form-fit elements 122, 124 achieves an additional connection, with the form-fit connection also being releasable in the event of an overload situation. This is indicated in an intermediate position in FIG.
- the first form-fit element 124 can be passed over by means of the inclined plane 126b of the second form-fit element 122 in order to enable a corresponding solution and thereby cancel the contact in relation to the direction 208.
- the first form-fit element 124 has an elevation height above the contact surface 172, and the second form-fit element 122 is adapted accordingly so that the second form-fit element 122 can drive over the first form-fit element 124 in an expected overload situation.
- the first form-fitting element 124 has a height above the contact surface 172 which is at most 2 cm and in particular at most 1 cm.
- the nose 122 is adapted accordingly.
- the elevation height is approximately 0.9 cm.
- a first wall 210 and a second wall 212 are arranged symmetrically to the center plane 140 on the support area 60 of the suction bar 40 and in particular on the bar 156.
- the first wall 210 and the second wall 212 are each arcuate. You are up and open in one direction 214. In the fixing position 62, this direction 214 points to the holder 38.
- the walls 210, 212 are closed facing away from the upper side and are delimited in particular by the support area 60.
- the walls 210, 212 each define a receptacle 216 for the finger 108 of the holding part 56.
- a fastening element 158 is positioned in the indentation 112.
- a corresponding bearing element 180 of the clamping element 176 or 178 sits in the further indentation 118.
- the respective web 114 is then positioned between the corresponding fastening element 158 and the corresponding bearing element 180.
- a rotary bearing is formed by the finger 108 and the associated wall 210 and 212, respectively.
- a first pivot bearing 218 (with the wall 210) and a second pivot bearing 220 are provided.
- the first pivot bearing 218 and the second pivot bearing 220 are symmetrical to the center plane 140 in relation to the fixing position 62.
- the pivot bearings 218, 220 have no function in normal operation. They take effect in an overload situation.
- the suction bar 40 can rotate on the holder 38 and, while still remaining on the holder, on the first pivot bearing 218 or on the second pivot bearing 220, depending on the overload situation. It can as a result, a force can be avoided in order to achieve overload protection.
- a first axis of rotation 222 is assigned to the first rotary bearing 218.
- a second axis of rotation 224 is assigned to the second rotary bearing 220.
- the first axis of rotation 222 and / or the second axis of rotation 224 are transverse and in particular perpendicular to the contact surface 64 or the contact surface 172.
- the pivot bearings 218, 220 are spaced apart from the connection 82 and from the housing box 66.
- the cleaning machine 10 functions as follows:
- the suction bar 40 is fixed in the fixing position 62 on the holder 38.
- Cleaning liquid is applied to the floor 36 to be cleaned via the corresponding application device 34.
- the cleaning tool (s) 98 perform a mechanical cleaning movement, the cleaning fluid ensuring improved dirt removal from the floor 36 to be cleaned.
- the cleaning machine 10 is designed to be self-propelled and drives over a corresponding cleaning area. Excess liquid is sucked up via the suction bar 40. In the suction mode, the suction unit device 42 generates a suction flow which acts on the suction space 154. Liquid can reach the suction chamber 154 via corresponding recesses 226 in the second contact element 150b and can be sucked off there.
- the system elements rest with their support plane 152 on the floor 36 to be cleaned.
- the suction bar 40 can be detached from the holder 38.
- the clamping elements 176, 178 are open (FIGS. 5, 8).
- the corresponding swivel elements 194 are swiveled in such a way that the respective first area 184 of the bearing elements 180 rests on the support area 60.
- the suction bar 40 is then inserted on the holder 38.
- the tab 86 is brought into the holder receptacle 84. Automatic positioning is then achieved.
- the contact area 58 rests against the contact area 60.
- the corresponding fingers 108 are positioned in the respective receptacle 216.
- the corresponding fastening elements 158 are located in the indentation 112.
- the bearing elements 180 are located in the respective further indentation 118.
- the pivoting elements 194 are then closed by a pivoting movement in a pivoting direction 228 (FIG. 8). As a result, the corresponding bearing elements 180 are moved. The clamping surfaces 198 are pressed against the holder 38. The corresponding spring devices 202 are excited. The contact area 58 is clamped to the suction bar 40 via the clamping elements 176, 178.
- the spring device 202 is tensioned.
- the lugs 122 are thereby placed on the first form-locking elements 124 and a form-locking is sufficient in relation to the direction 208.
- This form fit is created in at least two places symmetrically to the center plane 140.
- the housing box 66 is also brought via the connection 82 and the suction line 80 is thereby connected to the suction bar 40 in a fluid-effective manner, that is to say connected to the suction space 154 in a fluid-effective manner.
- the cleaning machine 10 is now ready for a suction operating mode.
- the suction bar 40 If the suction bar 40 encounters an obstacle in a cleaning operation, the suction bar 40, supported on the floor 36, can be attached to the holder 38 via one of the pivot bearings 218, 220 (depending on Force) and thus avoid the force. A corresponding overload situation can thereby be “compensated” and thus intercepted by the suction bar 40 or the cleaning machine 10. The suction bar 40 can avoid this overload situation. This will prevent damage. The suction bar 40 can then fall off the holder 38. In a corresponding overload situation, it is also possible for the suction bar 40 to become detached from the holder 38 without prior rotation and thus to fall off the cleaning machine 10
- FIG. 12 shows a corresponding intermediate situation.
- a force is exerted on the suction bar 40 and / or the holder 38 that a nose 122 on the holder 38 can move over the first form-fit element 124 on the suction bar 40 and can drive over it.
- the interlocking connection is released and the suction bar 40 can move towards the holder 38 in the direction 208.
- the previously present stop (FIG. 10) is canceled and this enables the suction bar 40 to fall off.
- the walls 210, 212 have such a height H (see FIG. 5) above the contact surface 172 that a corresponding solution is possible. Since the corresponding receptacles 216 are open at the top, a finger 108 can be carried out of the associated receptacle 216 in an upward direction.
- suction bar 40 can be released from the corresponding pivot bearing 218, 220 by moving it forward relative to the holder 38.
- a height H of the corresponding wall 210 or 212 is a maximum of 5 cm, and in particular a maximum of 4 cm, and in particular a maximum of 2 cm. In a specific embodiment, the height is approximately 1.1 cm
- the wall 210 or 212 is at least curved towards the receptacle 216 and is in particular convex. This enables the concave finger 108 in question to roll for rotation.
- a device-side connection of the suction bar 40 to the cleaning machine 10 takes place via the holder 38. This connection is not rigid, but flexible.
- a combination of a force fit connection and a form fit connection is provided. As a result, a defined position of the suction bar 40 (the fixing position 62) can be achieved in a “normal” cleaning operation of the cleaning machine 10. If the load on this connection exceeds a certain threshold value, the suction bar 40 can be partially or completely released.
- the suction bar 40 catches on an object during a cleaning run, a force can be exerted which leads to a rotation of the suction bar 40 on the holder 38 via the pivot bearing 218 or 220. If the suction bar 40 is hooked in on one side, it rotates in a controlled manner about a defined pivot point, which is predetermined by the first pivot bearing 218 or the second pivot bearing 220.
- the suction bar 40 can also detach from the corresponding connection without prior rotation.
- the suction line 80 remains on the device side.
- a detachable connection is provided via the connection 82 and the housing box 66, which allows a partial or complete detachment of the suction bar 40 from the holder 38.
- a sensor device which detects a partial or complete detachment of the suction bar 40 from the holder 38. A corresponding signal is then displayed to an operator so that he can set the fixation position 62 again.
- Tilting (angular adjustment) of the suction bar 40 on the holder 38 is prevented by the tab 86 and the associated holder receptacle 84.
- an operator can easily mount the suction bar 40 on the holder 38 or remove it from it. Only a small amount of hand strength is required for this. In particular, an overload force can be decoupled from a force required for assembly or disassembly.
- Corresponding overload forces for overload situations can be set by adapting the parameters relevant for the frictional connection and form-fitting connection.
- the cleaning machine 10 is designed in particular to be self-propelled. In the embodiment shown, it is designed as a ride-on machine. For example, it can also be designed as a stand-up machine or a follow-up machine.
- the cleaning machine 10 includes a test device 230 for a blockage on a suction path 232. It can thereby be seen whether there is a blockage at any point in the suction path 232, such as in the suction line 80, which requires operator intervention.
- the test device 230 shows an operator via a display that there is or could be a blockage.
- the testing device 230 comprises (at least) one pressure sensor 234.
- a further pressure sensor 236 is provided, which is arranged on the fan of the suction unit device 42.
- a differential pressure measurement is carried out, pressure values being measured via the pressure sensor 234 and the further pressure sensor 236.
- pressure sensor 234 it is also possible for only one pressure sensor such as pressure sensor 234 to be provided and for the necessary data to be taken over from a known family of characteristics.
- a pressure line 238 is provided, which is fluidly connected to the suction chamber 154. This pressure line 238 leads to the pressure sensor 234 outside the suction space 154 and in particular outside the suction bar 40. The pressure in the suction space 154 can be determined at a distance from the suction space 154 via the pressure line 238.
- this pressure line 238 is connected to the suction line 80.
- connection 82 a corresponding connection for the pressure line 238 is then also arranged on the connection 82.
- This connection for the pressure line is indicated in FIG. 5 with the reference number 240.
- this checking device 230 can then also be used to detect an in particular complete detachment of the suction bar 40 from the holder 38.
- the pressure in the suction chamber 154 is then measured at a distance from the suction chamber 154 via the pressure sensor 234. It is done via the Testing device 230 compares, for example, threshold values derived from a fan map, and an error message is displayed to the operator if a threshold value is exceeded or not reached.
- the corresponding pressure values of the fan can be calculated from the fan map for every operating state.
- a differential pressure measurement can be carried out without a second pressure sensor, wherein, as mentioned, a further pressure sensor 236 can also be used.
- contact elements 150a, 150b suction lips
- pressure monitoring can be carried out over the service life of the contact elements 150, with a corresponding evaluation of the pressure increase or the course, for example averaged on the basis of different soils.
- the testing device 230 can also be used to detect a release event of the suction bar 40.
- the pressure line 238 remains on the device side when the suction bar 40 is released.
- FIG. 15 to 17 Another exemplary embodiment (FIGS. 15 to 17) comprises a holder 250.
- the holder 250 comprises a fastening part 252 and an intermediate part 254.
- the fastening part 252 is fixed to the chassis 12 of the corresponding floor cleaning machine. It is fixedly mounted on the chassis 12 or mounted in a height-adjustable manner.
- the intermediate part 254 is oriented obliquely to the fastening part 252.
- the intermediate part 254 has a lower side 256, which faces a floor 36 to be cleaned, and an opposite upper side 258.
- the upper side 258 is spaced apart and, for example, spaced apart at least approximately parallel to the chassis 12.
- a holding part 262 is articulated to the intermediate part 254 via a pivot joint 260.
- the holding part 262 is used to hold a suction bar 264 directly.
- the holding part 262 comprises a contact area 266 for the suction bar 264, corresponding to the contact area 58 in the holder 38 as described above.
- the suction bar 264 can in principle be embodied in the same way as the suction bar 40.
- the holding part 262 is articulated to the intermediate part 254 so as to be pivotable about a pivot axis 268 via the pivot joint 260.
- the intermediate part 254 forms a first part 254 of the holder 250
- the holding part 262 forms a second part 262 of the holder 250, the second part 262 being pivotably articulated to the first part 254 via the pivot joint 260.
- the pivot axis 268 is oriented such that it is oriented at least approximately parallel to a support plane of the suction bar 264 on a floor 36 to be cleaned.
- the pivot axis 268 is oriented at least approximately parallel to the wheel axis 32.
- pivot axis 268 is oriented transversely and in particular perpendicular to the forward travel direction 16.
- the pivot joint 260 is formed on the holder 250.
- the swivel joint 260 comprises a bolt 270 with a collar 272. This bolt 270 is seated in a rotationally fixed manner on opposite receptacles 274a, 274b.
- the receptacles 274a, 274b which are designed like eyelets, are in turn seated on the holding part 262.
- a sleeve 276 is seated on the bolt 270, rotatable about the pivot axis 268.
- This sleeve 276 is connected to the intermediate part 254 in a rotationally fixed manner. As a result, the intermediate part 254 can be rotated relative to the bolt 270 via the sleeve 276.
- the bolt 270 is connected to the intermediate part 254 in a rotationally fixed manner, and accordingly the rotatability is achieved via a corresponding rotatable mounting of the bolt 270 on corresponding receptacles 274a, 274b.
- the receptacles 274a, 274b on the holding part 262 are spaced apart from the contact area 266 for the suction bar 264.
- a fixing device 278 is provided for setting and fixing a defined pivot position of the holding part 262 in relation to the intermediate part 254 (and thereby of the suction bar 264 in relation to the intermediate part 254).
- the fixed position device 278 connects the holding part 262 with the intermediate part 254 at a distance from the pivot joint 260 and thus the second part 262 of the holder 250 with the first part 254 of the holder 250.
- the fixing device 278 comprises a pin element 280, which is designed as an adjusting screw.
- a compression spring device 282 which comprises one or more compression springs, is arranged between the intermediate part 254 and the holding part 262 (see FIG. 16).
- the compression spring device 282 is supported both on the intermediate part 254 and thereby on the underside 256, as well as on the holding part 262.
- the compression spring device 282 strives to rotate the holding part 262 away from the intermediate part 254 in a direction 284 (FIG. 16).
- a lock nut 286 is arranged on the pin element 280 via a thread. This lock nut 286 lies on or above the upper side 258 of the intermediate part 254.
- a counter element 288 which is arranged on the pin element 280 and which acts on the holding part 262 can then prevent a set, defined pivot position on the pivot joint 260 from being released.
- the counter element 288 is assigned one or more spherical disks 290, which can compensate for angle differences that arise by adjusting the pin element 280.
- the pin element 280 has an engagement area 292 for a tool, by means of which a rotation of the pin element 280 for setting a corresponding pivot position and thereby determining the pivot position is possible.
- This area of application 292 lies above the upper side 258 of the intermediate part 254 and is at a distance from the chassis 12.
- an angular position of the holding part 262 on the intermediate part 254 is adjusted. This creates an angular position for the suction bar 264, which is fixed to the holding part 262, is adjusted relative to the intermediate part 254 or to the chassis 12.
- the corresponding angular position can be set, for example, when mounting the holder 250 or during a service process. In principle, it can also be set by an operator.
- the suction bar 264 For an optimal cleaning result, the suction bar 264 must be oriented at the “correct angle” to the surface 36 to be cleaned. Due to manufacturing tolerances, forces during operation and, for example, also due to different requirements depending on the type of soil, a specific angle setting can be advantageous. For example, the suction bar 264 sucks in operation and inclines slightly in the forward travel direction 16. By adjusting the angular position of the suction bar 264 to the chassis 12 by adjusting the pivot position of the holding part 262 to the intermediate part 254, a suitable setting can be made to achieve an optimized cleaning result.
- the pin member 280 (the fixing device 278) is disposed between the fastening part 252 and the squeegee bar 264 when the squeegee bar 264 is disposed on the holder 250.
- the holder 250 and the suction bar 264 are assigned an overload protection device, which is designed as described above, or another overload protection device is provided, or there is no overload protection device.
- the holder 250 and the suction bar 264 are combined with the overload protection device according to the invention.
- the solution according to the invention with regard to the fixing device and overload protection device can be used on an operator-controlled floor cleaning machine (for example, a ride-on machine, Uprising machine or back-up machine). It can also be used on a cleaning robot, which is particularly self-propelled and self-steering. In the same way, the solution with regard to the inclination adjustment of the suction bar can be used via a corresponding swivel joint in an operator-guided floor cleaning machine, or in a cleaning robot.
Landscapes
- Nozzles For Electric Vacuum Cleaners (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2019/080603 WO2021089164A1 (de) | 2019-11-07 | 2019-11-07 | Bodenreinigungsmaschine und verfahren zum betreiben einer bodenreinigungsmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4054393A1 true EP4054393A1 (de) | 2022-09-14 |
Family
ID=68503142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19801310.4A Pending EP4054393A1 (de) | 2019-11-07 | 2019-11-07 | Bodenreinigungsmaschine und verfahren zum betreiben einer bodenreinigungsmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US20220257079A1 (de) |
EP (1) | EP4054393A1 (de) |
CN (1) | CN114650758A (de) |
WO (1) | WO2021089164A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD1000023S1 (en) * | 2020-10-14 | 2023-09-26 | Alfred Kaercher Se & Co. Kg | Machine for cleaning floors |
USD1006356S1 (en) * | 2021-01-21 | 2023-11-28 | Alfred Kaercher Se & Co. Kg | Floor cleaning device |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05280785A (ja) | 1992-03-31 | 1993-10-26 | Matsushita Electric Works Ltd | 空調機監視制御装置 |
DE19611371A1 (de) | 1995-04-21 | 1996-10-24 | Vorwerk Co Interholding | Sauggerätevorsatz zur Feuchtreinigung von Flächen |
DE10305611B4 (de) * | 2003-02-11 | 2005-03-17 | Hako-Werke Gmbh | Bodenreinigungsmaschine |
DE102005054499B4 (de) * | 2005-11-16 | 2007-08-23 | G. Staehle Gmbh U. Co. | Boden-Reinigungsmaschine |
EP2554090B1 (de) | 2005-12-22 | 2014-04-09 | Diversey, Inc. | Abstreiferanordnung für eine Bodenreinigungsmaschine |
CN100581433C (zh) * | 2007-03-29 | 2010-01-20 | 杜爵伟 | 结合具有扫地功能的擦地装置的地面清洁器 |
DE102009029956A1 (de) | 2009-06-19 | 2010-12-23 | Aebi Schmidt Deutschland Gmbh | Selbstfahrende aufnehmende Kehrmaschine |
EP2498662B1 (de) | 2009-11-09 | 2018-11-07 | Tennant Company | Schnellverschluss-rakelarmatur und verwendungsverfahren dafür |
CN101731997A (zh) * | 2009-11-26 | 2010-06-16 | 苏州莱尔特清洁器具有限公司 | 一种多用地板刷 |
CN102113853B (zh) * | 2011-02-28 | 2013-01-02 | 莱克电气股份有限公司 | 一种智能吸尘器清扫方法 |
DE102011055445A1 (de) | 2011-11-17 | 2013-05-23 | Vorwerk & Co. Interholding Gmbh | Reinigungsvorrichtung mit einem Saugkanal |
WO2013123174A1 (en) | 2012-02-16 | 2013-08-22 | Tennant Company | Surface maintenance vehicle with quick release squeegee assembly |
WO2014191024A1 (de) | 2013-05-28 | 2014-12-04 | Alfred Kärcher Gmbh & Co. Kg | Verfahren zur einstellung einer position von sauglippen einer bodenreinigungsmaschine und bodenreinigungsmaschine |
CN105358031B (zh) * | 2013-06-28 | 2018-04-10 | 阿尔弗雷德·凯驰两合公司 | 可行驶的坐式地面清洁机和用于定位可行驶的坐式地面清洁机的抽吸杆的方法 |
DE202013012335U1 (de) | 2013-12-09 | 2016-05-04 | Carl Freudenberg Kg | Saugdüse |
DE202014011047U1 (de) | 2014-08-29 | 2017-07-14 | Alfred Kärcher Gmbh & Co. Kg | Saugdüse und Hartflächenabsauggerät |
WO2016034251A1 (de) * | 2014-09-05 | 2016-03-10 | Alfred Kärcher Gmbh & Co. Kg | Saugbalkenvorrichtung für eine bodenreinigungsmaschine, bodenreinigungsmaschine und verfahren zur reinigung von fliesenböden |
EP3178363A1 (de) | 2015-12-08 | 2017-06-14 | Wetrok AG | Saugbalken für eine bodenreinigungsmaschine |
-
2019
- 2019-11-07 EP EP19801310.4A patent/EP4054393A1/de active Pending
- 2019-11-07 WO PCT/EP2019/080603 patent/WO2021089164A1/de unknown
- 2019-11-07 CN CN201980101865.8A patent/CN114650758A/zh active Pending
-
2022
- 2022-05-06 US US17/738,091 patent/US20220257079A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US20220257079A1 (en) | 2022-08-18 |
WO2021089164A1 (de) | 2021-05-14 |
CN114650758A (zh) | 2022-06-21 |
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