Surface cleaning head for a surface cleaning device

Abstract

The invention relates to a surface cleaning head (100) for a surface cleaning device (G1 to G9) for cleaning a surface (F), having a support structure (110) which extends along a longitudinal axis (X), a transverse axis (Y), and a vertical axis (Z) of the surface cleaning head (100) and having a main tool device (300), said main tool device being mounted on the support structure (110) and having at least one main tool (310) which extends along the transverse axis (Y) over the width (B1) of the main tool and which, during the operation of the surface cleaning device (100), rests, along the vertical axis (Z), on the surface (F) to be cleaned and can be movably driven relative to the support structure (110) by means of a drive device (340) of the surface cleaning device (G1 to G9) in order to act on the surface (F) to be cleaned. The surface cleaning head is characterized in that an additional tool device (1300) is provided which is associated with the support structure (110), said additional tool device (1300) having at least one additional tool (1310) which, during the operation of the surface cleaning head (100), rests, along the vertical axis (Z), on the surface (F) to be cleaned, is offset relative to the at least one main tool (310) along the transverse axis (Y), and extends along the transverse axis (Y) over the width (B2) of the additional tool in order to act on the surface to be cleaned (F) while forming, together with the at least one main tool (310), a widened total tool width (B3) of the surface cleaning head (100) for this purpose.

Description

[0001] Surface cleaning head for a surface cleaning device

[0002] The invention relates to improvements in the field of cleaning surfaces, in particular floor surfaces, for example floor surfaces in buildings.

[0003] In particular, the invention relates to a surface cleaning head for cleaning a surface, a surface cleaning device with such a surface cleaning head, and an additional tool device for such a surface cleaning head.

[0004] From DE 10 2013 215 198 A1, a surface cleaning device is known, comprising a guide element, a surface cleaning head, a tool assembly, a liquid dispensing device, and a liquid collection device. The known surface cleaning device is designed for wet cleaning of floor surfaces and is configured as a scrubber-dryer. During wet cleaning, the user manually guides the surface cleaning head over the area to be cleaned using the guide element. Liquid (fresh water) is dispensed onto the surface by means of the liquid dispensing device, and the moistened surface is then worked by the tool assembly to loosen dirt. The liquid mixed with the loosened dirt (dirty water) is collected by the liquid collection device and disposed of after wet cleaning.In the known surface cleaning device, the tool assembly has two disc tools that extend along a transverse axis of the surface cleaning head over a tool width.

[0005] The object of the invention is to provide a surface cleaning head, a surface cleaning device, and an additional tool assembly that offer advantages over the prior art. In particular, improved adaptability to different cleaning tasks is to be achieved.

[0006] This problem is solved by providing a surface cleaning head with the features of claim 1, a surface cleaning device with the features of claim 34, and an additional tool device with the features of claim 44. Advantageous embodiments are specified in the dependent claims. The wording of the claims is incorporated herein by reference.

[0007] The surface cleaning head according to the invention comprises a support structure, a main tool assembly, and an auxiliary tool assembly. The surface cleaning head is designed for cleaning a surface. The surface can be horizontal, vertical, or oriented in any other way. The surface cleaning head according to the invention offers particular advantages when cleaning floor surfaces, such as floors in buildings, which can be hard floors or carpets. The support structure extends along a longitudinal axis, a transverse axis, and a vertical axis. The main tool assembly is mounted on the support structure and comprises at least one main tool. During operation of the surface cleaning head, the main tool rests on or against the surface to be cleaned, preferably along the vertical axis.The main tool is driven by a drive unit of the surface cleaning device so that it can move relative to the support structure in order to act on the surface to be cleaned. In one embodiment, the drive unit is a component of the surface cleaning head. In another embodiment, the drive unit is not a component of the surface cleaning head. The at least one main tool extends along the transverse axis over a main tool width. The auxiliary tool assembly is associated with the support structure and includes at least one auxiliary tool. During operation of the surface cleaning head, the auxiliary tool rests on or against the surface to be cleaned, preferably along the vertical axis.The at least one additional tool is arranged offset along the transverse axis relative to the at least one main tool and extends along the transverse axis over an additional tool width in order to act on the surface to be cleaned in addition to the at least one main tool, forming a wider overall tool width of the surface cleaning head.

[0008] The invention is based on the understanding that surface cleaning heads known from the prior art are designed to perform a specific cleaning task and, in particular, have a fixed tool width. The tool width influences the maneuverability and the cleaning capacity of the surface cleaning head. Cleaning capacity refers to the area of ​​the surface that can be cleaned per unit of time. A narrow tool width offers better maneuverability but simultaneously lower cleaning capacity. A wide tool width offers better cleaning capacity but simultaneously lower maneuverability. Therefore, various surface cleaning devices with differently sized surface cleaning heads are known from the prior art.The invention eliminates the need for multiple different surface cleaning devices with varying tool widths, thus saving considerable effort. Instead, the surface cleaning head according to the invention is provided with the main tool assembly and the auxiliary tool assembly. The auxiliary tool assembly widens the main tool width of the surface cleaning head to a single overall tool width. This allows the surface cleaning head to be optimally configured with regard to its maneuverability and area coverage, and thus better adapted to the cleaning task at hand, particularly to the size and accessibility of the area to be cleaned.

[0009] The support structure extends along the longitudinal axis, the transverse axis, and the vertical axis. During operation of the surface cleaning head, the vertical axis is preferably oriented vertically and / or perpendicular to the surface to be cleaned. The longitudinal axis and the transverse axis are preferably each oriented horizontally. The surface cleaning head rests at least indirectly on the surface to be cleaned along the vertical axis, namely via the main tool assembly and the auxiliary tool assembly, more precisely: via the at least one main tool and the at least one auxiliary tool. The support structure serves to accommodate further components of the surface cleaning head, in particular the main tool assembly and the auxiliary tool assembly. In one embodiment, the support structure is a housing or a housing assembly. The housing and / or the housing assembly can be open or closed.

[0010] The main tool assembly comprises at least one main tool. The main tool is designed to act on the surface to be cleaned, particularly in an abrasive manner. During operation of the surface cleaning device, the main tool performs a tool movement driven by the drive unit. In one embodiment, the tool movement of the main tool is a rotary movement. In other embodiments, a translational, eccentric, vibrating, and / or oscillating tool movement of the main tool may be provided alternatively or additionally. In one embodiment, the at least one main tool is a disc tool. In other embodiments, the at least one main tool is a roller tool, a vibrating tool, or an eccentric tool. Furthermore, embodiments are conceivable in which the main tool assembly comprises several identical and / or different main tools.

[0011] The auxiliary tool assembly comprises at least one auxiliary tool. In a preferred embodiment, the auxiliary tool performs a tool movement relative to the support structure to act on the surface to be cleaned. In one embodiment, the tool movement of the at least one auxiliary tool is a rotary movement. In another embodiment, a translational, eccentric, vibrating, and / or oscillating tool movement of the at least one auxiliary tool is provided, either alternatively or additionally. In one embodiment, the at least one auxiliary tool is a disc tool. In further embodiments, the at least one auxiliary tool is a roller tool, a vibrating tool, or an eccentric tool. Furthermore, embodiments are conceivable in which the auxiliary tool assembly comprises several identical and / or different auxiliary tools.In one embodiment, the additional tool assembly is at least indirectly attached to the support structure. Preferably, the additional tool assembly is detachably attached to the support structure. In another embodiment, the additional tool assembly is optionally removable and (re)attached. This allows the surface cleaning head to be used optionally in at least a first configuration and in a second configuration. In the first configuration, the additional tool assembly is attached to the surface cleaning head and the...

[0012] The surface cleaning head has the total tool width. In the second configuration, the additional tool assembly is removed from the surface cleaning head and the

[0013] The surface cleaning head has the main tool width. The first configuration can also be referred to as the wide configuration, and the second configuration as the narrow configuration. In a further embodiment, the auxiliary tool assembly is not removable. In other words, this embodiment provides a fixed arrangement of the main and auxiliary tool assemblies, for example, and preferably, with two main tools and two auxiliary tools. This allows for a design that is wide yet also flat and narrow, i.e., with a shallower depth relative to the working area, which further promotes the objectives of the invention.In a preferred embodiment, the at least one main tool and the at least one auxiliary tool are identical, particularly with regard to the type and / or orientation of their tool movement, such that, for example, the at least one main tool and the at least one auxiliary tool are each designed as disc tools. However, an identical design as a roller tool, vibratory tool, or eccentric tool is also conceivable and possible. In one embodiment, preferably in addition to the aforementioned identical design as a disc tool, it is provided that the at least one auxiliary tool has smaller dimensions, specifically a smaller diameter, than the at least one main tool.

[0014] The solution according to the invention is not limited to cleaning surfaces. In principle, it can also be used for surface processing, for example, grinding, polishing, or the like. Accordingly, one can also speak of a surface processing head and a surface processing device. In one embodiment of the invention, the at least one auxiliary tool can be driven relative to the support structure by means of the drive unit. In this embodiment of the invention, the drive unit thus drives both the at least one main tool and the at least one auxiliary tool. In an alternative embodiment, the auxiliary tool assembly has a separate drive unit (auxiliary drive unit, auxiliary drive motor). Preferably, the drive unit has a (single) drive motor that drives both the main and the auxiliary tool. The drive motor is preferably an electric motor.

[0015] In a further embodiment of the invention, the surface cleaning head has a transmission device configured to transmit a tool movement of the at least one main tool to the at least one auxiliary tool. In this embodiment, the drive of the at least one auxiliary tool is therefore at least indirectly mediated via the at least one main tool. The tool movement of the at least one main tool drives the tool movement of the at least one auxiliary tool. The transmission device transmits the tool movement of the main tool to the auxiliary tool. The at least one main tool thus functions as a drive element for the at least one auxiliary tool. The transmission device is therefore configured to transmit a drive movement, a drive force, a drive torque, and / or a drive power.In one embodiment, the transmission device is configured to transform the tool movement of the main tool. Transformation means that one type of movement of the main tool is transferred into a different type of movement of the auxiliary tool. For example, a rotary, translational, eccentric, oscillating, and / or vibrating tool movement of the main tool can be transformed into a different type of tool movement of the auxiliary tool. In another embodiment, the transmission device is configured, either alternatively or additionally, to translate the tool movement of the main tool, whereby the translation can be either faster or slower. The transmission device can therefore also be referred to as a gear unit and / or understood as a forming gear and / or a transmission gear.In a particularly preferred embodiment, the main tool(s) are integrated into the transmission device or form parts thereof.

[0016] In a further embodiment of the invention, the transmission device comprises a drive contour arranged on the main tool and a drive contour arranged on the auxiliary tool, which engages at least indirectly with the drive contour of the main tool. Preferably, the drive contour is formed on the main tool. Preferably, the drive contour is formed on the auxiliary tool. Through the engagement between the drive contour and the drive contour, the tool movement of the main tool is transmitted to the auxiliary tool, whereby a forming and / or translation of the tool movement of the main tool can take place. Preferably, the drive contour and the drive contour are in a force-fit and / or positive-locking engagement with each other.

[0017] In a further embodiment of the invention, the transmission device comprises a gear drive with a drive gear assigned to at least one main tool and an output gear assigned to at least one auxiliary tool, which engages at least indirectly with the drive gear. In one embodiment, the drive gear and the output gear are in direct engagement with each other. In another embodiment, indirect engagement is provided, for example via an intermediate gear that engages with both the drive gear and the output gear. In this embodiment of the invention, the main tool and the auxiliary tool are preferably each configured to perform a rotary tool movement. Preferably, the drive gear is torque-resistant and connected to the main tool, and is particularly preferably formed on the main tool.Preferably, the output gear is connected to the auxiliary tool in a torque-resistant manner, and is particularly preferably formed on the auxiliary tool itself. In one embodiment of the invention, the transmission device alternatively or additionally comprises a traction drive, for example a belt drive or a chain drive, an eccentric drive, or the like.

[0018] In a further embodiment of the invention, the auxiliary tool assembly can be moved between a first position and a second position relative to the support structure. In the first position, the full tool width is present. In the second position, there is no widening or a smaller widening. To move between the first and second positions, the auxiliary tool assembly is, for example, mounted on the support structure in a way that allows it to be moved relative to the support structure by means of hinges, pivots, or other means. In a preferred embodiment, the second position is a non-use position in which the auxiliary tool assembly is removed from the support structure. In this case, the auxiliary tool assembly is detachably attached to the support structure and can thus be selectively removed and (re)attached.

[0019] In a further embodiment of the invention, the auxiliary tool assembly is detachably mounted on the support structure by means of a manually releasable fastening device. This allows the auxiliary tool assembly to be attached and removed particularly easily and quickly. The fastening device is preferably manually switchable between a fastening state and a release state. In the fastening state, the auxiliary tool assembly is detachably attached to the support structure by means of the fastening device. In the release state of the fastening device, the fastening is released and the auxiliary tool assembly can be removed from the support structure. In a preferred embodiment, the fastening device can be released without tools. Tool-free means that a user does not need any tools to switch the fastening device between the aforementioned fastening and release states.The fastening device can, in principle, have any design suitable for the intended purpose. For example, the fastening device is designed to form a screw, plug, clamp, snap-fit, bayonet and / or magnetic connection.

[0020] In a further embodiment of the invention, the fastening device comprises at least one fastening section and at least one complementary fastening section, which can also be referred to as the first fastening section and the second fastening section. The first fastening section is arranged and / or formed on the support structure. The second fastening section is arranged and / or formed on the auxiliary tool assembly. The first fastening section and the second fastening section interact by force-fit and / or positive locking to detachably fasten the auxiliary tool assembly to the support structure. Depending on the design of the fastening device, the first fastening section and the second fastening section can each be designed as a screw, plug-in, clamp, snap-fit, bayonet, and / or magnetic section.

[0021] In a further embodiment of the invention, the auxiliary tool assembly comprises at least one auxiliary support structure. The at least one auxiliary tool is mounted on the auxiliary support structure and is preferably movably driven relative to the auxiliary support structure. Alternatively or additionally, the complementary mounting section is arranged and / or formed on the auxiliary support structure. In one embodiment, the auxiliary support structure is designed as a type of housing or housing arrangement, so that it can also be referred to as an auxiliary housing or an auxiliary housing arrangement.

[0022] In a further embodiment of the invention, the surface cleaning head has a propulsion device configured to generate a propulsion force along a propulsion direction, wherein the propulsion force of the propulsion device assists or causes movement of the surface cleaning head across the surface to be cleaned. The propulsion direction is preferably parallel to a longitudinal axis of the surface cleaning head and / or directed forward. The propulsion device facilitates the movement of the surface cleaning head across the surface to be cleaned. The propulsion force acting along the propulsion direction can reduce or completely eliminate the effort required by a user to move the surface cleaning head in the propulsion direction. The propulsion device can, in principle, have any design suitable for the present purpose.In a preferred embodiment, the propulsion device comprises a movable propulsion element and a propulsion motor for driving the propulsion element. The propulsion element is preferably configured to act on the surface to be cleaned in a rotational movement and with the occurrence of rolling and / or sliding friction, wherein the propulsion motor is configured to drive the movable propulsion element at a constant or variable rotational speed.

[0023] In a further embodiment of the invention, the main tool assembly is configured to generate a propulsive force along a propulsion direction, wherein the propulsive force of the main tool assembly assists or causes movement of the surface cleaning head across the surface to be cleaned. The propulsion generated by the main tool assembly can be present alternatively or additionally to the propulsion of any propulsion device and / or any propulsion of the auxiliary tool assembly. The propulsion generated by the main tool assembly allows a user to guide the surface cleaning device across the surface to be cleaned with reduced effort. The propulsive force preferably acts parallel to the longitudinal axis of the surface cleaning head and / or forwards. In this embodiment, the propulsion is generated by the at least one main tool of the main tool assembly.The propulsive force results from a resultant of the frictional forces in the contact between the at least one main tool and the surface to be cleaned.

[0024] In a further embodiment of the invention, the auxiliary tool assembly is configured to generate a propulsive force along a propulsion direction, wherein the propulsive force of the auxiliary tool assembly assists or causes movement of the surface cleaning head across the surface to be cleaned. The propulsion generated by the auxiliary tool assembly can be present alternatively or additionally to the propulsion of any propulsion device and / or any propulsion of the main tool assembly. The propulsion generated by the auxiliary tool assembly allows a user to guide the surface cleaning device across the surface to be cleaned with reduced effort. The propulsive force preferably acts parallel to the longitudinal axis of the surface cleaning head and / or forwards. In this embodiment, the propulsion is generated by the at least one auxiliary tool of the auxiliary tool assembly.The propulsive force results from a resultant of the frictional forces in the contact between the at least one additional tool and the surface to be cleaned.

[0025] In a further embodiment of the invention, the at least one main tool is a disc-shaped main tool with a vertical axis of rotation extending along the vertical axis. During operation, the at least one disc-shaped main tool rests with one end face along the vertical axis on the surface to be cleaned and rotates about its axis of rotation. In one embodiment, the axis of rotation is parallel to the vertical axis and thus oriented exactly vertically. In another embodiment, the axis of rotation is slightly inclined from the exactly vertical orientation.

[0026] In a further embodiment of the invention, the main tool assembly comprises two disc main tools arranged side by side along the transverse axis and driven in opposite directions about their respective vertically oriented axes of rotation by means of the drive unit. In one embodiment, the main tool assembly comprises exactly two disc main tools. In another embodiment, the main tool assembly comprises at least two disc main tools, so that embodiments with more than two, for example three, four, five or more, disc main tools are also conceivable and possible.

[0027] In a further embodiment of the invention, the main tool assembly comprises exactly two disc main tools. In other words, only the aforementioned two disc main tools are present as main tools. This allows for a particularly simple design. Furthermore, advantages arise in terms of cleaning. Moreover, in embodiments with exactly two disc main tools, a feed can be generated in a simple manner. Preferably, the two disc main tools are driven in opposite directions. Preferably, the disc main tools have identical diameters.

[0028] In a further embodiment of the invention, the disc main tools each have a diameter between 7.5 cm and 25 cm, preferably between 10 cm and 20 cm. This allows advantageous main tool widths between 15 cm and 50 cm, preferably between 20 cm and 40 cm, to be achieved, provided exactly two disc main tools are present. Diameters greater than 25 cm can lead to reduced maneuverability of the surface cleaning head. Diameters of less than 7.5 cm can result in an insufficient area coverage for many cleaning tasks. In embodiments with a propulsion system generated by the main tools, diameters of less than 7.5 cm can lead to insufficient propulsion force. These disadvantages are avoided with a diameter between 7.5 cm and 25 cm, preferably between 10 cm and 20 cm.

[0029] In a further embodiment of the invention, the two disc main tools are configured to generate a thrust. The disc main tools can be configured in different ways to generate the thrust force along the thrust direction, for example, by a slight inclination of the respective axes of rotation and / or by applying a local axial force. In both cases, an uneven distribution of frictional forces about the respective axis of rotation is generated between the respective disc main tool and the surface to be cleaned. This uneven distribution of frictional forces causes the thrust force along the thrust direction. An uneven distribution of frictional forces can also be achieved, in principle, by partially covering the contact area between the respective disc main tool and the surface.Alternatively or additionally, a friction-reducing agent, such as a lubricant, can be locally introduced between the respective disc main tool and the surface. In a preferred embodiment, the axes of rotation of the disc main tools are slightly inclined to generate the penetrating force. Specifically, the axes of rotation of the disc main tools are inclined towards or away from each other, starting from a precise vertical alignment in a common plane. The inclination with respect to the precise vertical alignment of the axes of rotation is preferably between 0.5° and 5°, and particularly preferably between 1° and 3°. Preferably, the disc main tools are driven at identical speeds but in opposite directions of rotation.In a further embodiment, the disc main tools are each subjected to an axial force that is unevenly distributed and / or locally concentrated in the circumferential direction of the respective disc main tool to generate the propulsive force. This uneven and / or locally concentrated axial force causes the aforementioned uneven distribution of frictional force and thus the propulsion. In one embodiment, to generate the respective axial force, each disc main tool is preferably assigned a preloading element or pressure element arranged radially spaced from its respective axis of rotation. This element may, for example, be a wheel pressing on the respective disc main tool, a pressing roller, a sliding spring, or the like.

[0030] In a further embodiment of the invention, the auxiliary tool assembly comprises at least one first auxiliary tool and one second auxiliary tool, which are arranged on opposite outer sides of the support structure along the transverse axis on both sides of the main tool assembly. Specifically, the first auxiliary tool and the second auxiliary tool are arranged along the transverse axis on both sides of the at least one main tool. In this embodiment, the auxiliary tool assembly forms a widening of the main tool assembly on both sides. The first auxiliary tool and the second auxiliary tool are, for example, each designed as a disc, roller, vibratory, or eccentric tool. In principle, different designs are also possible. For example, the first auxiliary tool can be designed as a disc tool and the second auxiliary tool as a roller tool, and so on.If the auxiliary tool assembly is detachably attached to the support structure, the first auxiliary tool and the second auxiliary tool can be detachable and / or attachable either together or separately. For example, the auxiliary tool assembly can have a first auxiliary tool unit and a separate second auxiliary tool unit, with the first auxiliary tool being a component of the first auxiliary tool unit and the second auxiliary tool being a component of the second auxiliary tool unit. Each of the two auxiliary tool units can have a separate mounting device.

[0031] In a further embodiment of the invention, the first auxiliary tool and the second auxiliary tool are each a disc auxiliary tool with a vertical axis of rotation extending along the vertical axis. In one embodiment, the auxiliary tool assembly comprises exactly two disc auxiliary tools. In a further embodiment, the auxiliary tool assembly comprises at least two disc auxiliary tools, so that embodiments with more than two, for example three, four, five or more, disc auxiliary tools are also conceivable and possible.

[0032] In a further embodiment of the invention, the auxiliary tool assembly comprises exactly two additional disc tools. In other words, only the aforementioned two additional disc tools are present. This allows for a particularly simple design. This is especially true in combination with embodiments that have exactly two main disc tools. Preferably, the two additional disc tools are driven in opposite directions. Preferably, the additional disc tools have identical diameters.

[0033] In a further embodiment of the invention, the disc attachments each have a diameter between 4 cm and 10 cm, preferably between 5 cm and 7.5 cm. If exactly two disc attachments are present, advantageous attachment widths between 8 cm and 20 cm, preferably between 10 cm and 15 cm, can be achieved. Diameters greater than 15 cm can lead to limited maneuverability of the surface cleaning head. Diameters of less than 4 cm can result in insufficient effectiveness of the attachments and, in particular, insufficient (additional) area coverage. These disadvantages are avoided with a diameter between 4 cm and 10 cm, preferably between 5 cm and 7.5 cm.

[0034] In a further embodiment of the invention, the additional disc tools each have a diameter that is between 20% and 80% of the respective diameter of the main disc tools. This achieves an advantageous overall tool width with a comparatively shallow depth, particularly in the area of ​​the additional disc tools. The shallow depth offers advantages during cleaning. For example, the maneuverability of the surface cleaning head is improved when cleaning corners, hard-to-reach areas, or under protrusions. In other words, viewed from above, the main disc tools and the additional disc tools form a tool contour that tapers from the center outwards towards the outer edges of the support structure. The tool contour essentially tapers to a point, which is crucial for improved corner cleaning.

[0035] In a further embodiment, exactly two main disc tools and exactly two auxiliary disc tools are provided, wherein the auxiliary disc tools each have a diameter that is between 20% and 80% of the respective diameter of the main disc tools. This is a particularly advantageous embodiment of the invention.

[0036] In a further embodiment of the invention, exactly two main disc tools and exactly two auxiliary disc tools are provided, wherein the main disc tools each have a diameter between 7.5 cm and 25 cm, preferably between 10 and 20 cm, and wherein the auxiliary disc tools each have a diameter between 4 cm and 10 cm, preferably between 5 cm and 7.5 cm. In a preferred embodiment, the diameter of the main disc tools is between 8 cm and 12 cm, preferably 10 cm, and the diameter of the auxiliary disc tools is between 5 cm and 7.5 cm. In a further preferred embodiment, the diameter of the main disc tools is between 13 cm and 17 cm, preferably 15 cm, and the diameter of the auxiliary disc tools is between 5 cm and 7.5 cm.In a further preferred embodiment, the diameter of the main disc tools is between 18 cm and 22 cm, preferably 20 cm, and the diameter of the auxiliary disc tools is between 5 cm and 7.5 cm. In a further embodiment of the invention, the two auxiliary disc tools are configured to generate a propulsion force. The auxiliary disc tools can be configured in different ways to generate the propulsion force along the direction of propulsion, for example, by a slight inclination of the respective axes of rotation and / or by applying a local axial force. In both cases, an uneven distribution of frictional forces about the respective axis of rotation is generated between the respective auxiliary disc tool and the surface to be cleaned. This uneven distribution of frictional forces produces the propulsion force along the direction of propulsion.An uneven distribution of frictional force can, in principle, also be achieved by partially covering the contact area between the respective disc tool and the surface. Alternatively or additionally, a friction-reducing agent, such as a lubricant, can be locally introduced between the respective disc tool and the surface. In a preferred embodiment, the axes of rotation of the disc tools are slightly inclined to generate the driving force. Specifically, the axes of rotation of the disc tools are inclined towards or away from each other, starting from a precise vertical alignment in a common plane. The inclination relative to the precise vertical alignment of the axes of rotation is preferably between 0.5° and 5°, and particularly preferably between 1° and 3°. Preferably, the disc tools are driven at identical speeds but in opposite directions of rotation.In a further embodiment, the disc attachment tools are each subjected to an axial force that is unevenly distributed and / or locally concentrated in the circumferential direction of the respective disc attachment tool to generate the propulsive force. This uneven and / or locally concentrated axial force causes the aforementioned uneven distribution of frictional force and thus the propulsion. In one embodiment, to generate the respective axial force, each disc attachment tool is preferably assigned a preloading element or pressure element arranged radially spaced from its respective axis of rotation. This element may, for example, be a wheel, a pressing roller, a sliding spring, or the like that presses against the respective disc attachment tool.

[0037] In a further embodiment of the invention, the main tool width is between 10 cm and 35 cm or between 35 cm and 70 cm. With the first alternative, a comparatively large auxiliary tool width will regularly be advantageous. This allows the relatively small main tool width of between 10 cm and 35 cm to be widened to a sufficiently large overall tool width to enable a significantly increased area coverage of the surface cleaning head. With the second alternative, a further substantial widening will regularly be advantageous in order not to unduly restrict the maneuverability of the already relatively wide surface cleaning head. In a further embodiment of the invention, the overall tool width is between 110% and 200% of the main tool width. The aforementioned range of values ​​has proven to be particularly advantageous.In particular, with a detachable arrangement of the additional tools, it may be possible to provide additional tools in different dimensions, so that several variants can be fulfilled within the specified range of values.

[0038] In a further embodiment of the invention, the surface cleaning head has a liquid intake device designed to collect liquid from the surface to be cleaned. The liquid intake device preferably has a liquid intake arranged on the support structure. The liquid intake preferably rests on the surface to be cleaned. Preferably, the liquid intake is designed as a suction bar, suction bar arrangement, or the like.

[0039] In a further embodiment of the invention, the liquid intake device comprises a main liquid intake and an auxiliary liquid intake. The main liquid intake is arranged along the longitudinal axis behind the main tool assembly, specifically behind the at least one main tool, and extends longitudinally along the transverse axis across the width of the main tool. Preferably, the main liquid intake extends longitudinally across at least the entire width of the main tool. The auxiliary liquid intake is arranged along the longitudinal axis behind the auxiliary tool assembly, specifically behind the at least one auxiliary tool. Furthermore, the auxiliary liquid intake extends longitudinally along the transverse axis across the width of the auxiliary tool. Preferably, the auxiliary liquid intake extends longitudinally across at least the entire width of the auxiliary tool.In designs with a detachably mounted auxiliary tool assembly attached to the support structure, the auxiliary fluid reservoir is preferably also detachably mounted to the support structure. In a preferred embodiment, the auxiliary fluid reservoir is a component of the auxiliary tool assembly and can therefore be attached to and removed from the support structure together with it.

[0040] In a further embodiment of the invention, the main liquid intake has at least one sealing lip resting on the surface to be cleaned. This at least one sealing lip extends over, preferably the entire, width of the main tool.

[0041] In a further embodiment of the invention, the main liquid intake has two sealing lips arranged at intervals along the longitudinal axis, forming a suction channel, each of which rests on the surface to be cleaned. The sealing lips can also be referred to as the first and second sealing lips. The suction channel is formed between the first and second sealing lips. The liquid to be received can, for example, be drawn from the suction channel by a liquid conveying device of the liquid intake device and conveyed into a liquid container. In one embodiment, the liquid conveying device and / or the liquid container is arranged on the surface cleaning head. In another embodiment, the liquid conveying device and / or the liquid container is a component of a surface cleaning device that includes the surface cleaning head and is arranged away from the surface cleaning head.The first sealing lip can also be referred to as the front sealing lip with respect to the longitudinal axis. The second sealing lip can be referred to as the rear sealing lip. In a preferred embodiment, the front sealing lip has recesses through which the liquid to be collected can enter the suction channel when the surface cleaning head moves forward along its longitudinal axis.

[0042] In a further embodiment of the invention, the additional liquid intake has at least one additional sealing lip, which is associated with the at least one additional tool. During operation of the surface cleaning head, the at least one additional sealing lip rests on the surface to be cleaned. The additional sealing lip extends longitudinally over, preferably the entire, width of the additional tool. Preferably, the at least one additional sealing lip borders directly on the at least one sealing lip of the main liquid intake along its transverse axis. In other words, the end faces of the sealing lip and the additional sealing lip are directly opposite each other. Alternatively, an overlap between the additional sealing lip and the at least one sealing lip can also be provided. Preferably, the additional sealing lip is arranged along its longitudinal axis in front of the at least one sealing lip of the main liquid intake. This ensures the most complete liquid intake possible.If the main liquid intake has two sealing lips with an intermediate suction channel, the additional sealing lip preferably projects between the sealing lips into the suction channel. In particular, the additional sealing lip can also be designed solely to guide liquid and thus supply liquid to the suction channel or to the liquid intake.

[0043] In a further embodiment of the invention, the surface cleaning head has a liquid dispensing device designed to dispense liquid onto the surface to be cleaned. The liquid to be dispensed is, for example, fresh water to which a cleaning agent may be added. The liquid dispensing device has at least one liquid outlet, which can also be referred to as a liquid outlet. In one embodiment, the liquid outlet is arranged such that the liquid is dispensed directly onto the surface. In another embodiment, the liquid outlet is arranged such that the liquid is dispensed indirectly, for example, via the at least one main tool and / or auxiliary tool. In one embodiment, the liquid dispensing device has several liquid outlets, each assigned to one of the main tools and / or auxiliary tools.In a specific embodiment, the liquid dispensing mechanism extends centrally through at least one main tool and / or auxiliary tool. In various embodiments, the liquid dispensing device comprises a liquid conveying device and a liquid reservoir. The liquid conveying device is configured to convey the liquid to be dispensed. The liquid reservoir is configured to store the liquid to be dispensed. In one embodiment, the liquid conveying device and / or the liquid reservoir are arranged on the surface cleaning head. In another embodiment, the liquid conveying device and / or the liquid reservoir are components of a surface cleaning device that includes the surface cleaning head and are arranged away from the surface cleaning head.

[0044] The surface cleaning device according to the invention has a surface cleaning head as described above.

[0045] In a further embodiment of the invention, the surface cleaning device has a guide element that extends longitudinally between a proximal end and a distal end. The distal end is connected to the surface cleaning head, specifically to the support structure of the surface cleaning head. The connection between the guide element and the surface cleaning head can be detachable, permanent, rigid, and / or movable. The guide element is preferably designed for manually guiding the surface cleaning head over the surface to be cleaned. When using the surface cleaning device, the proximal end is typically oriented towards the user, while the distal end is oriented away from the user and points towards the surface cleaning head and thus the surface to be cleaned. Due to the longitudinal design of the guide element, the user can guide the surface cleaning head over floor surfaces while maintaining an upright posture.

[0046] In a further embodiment of the invention, the surface cleaning device includes a liquid container, wherein the liquid container is a component of a liquid intake device and / or a liquid dispensing device. In one embodiment, the liquid container serves to store the liquid taken in by means of the liquid intake. In another embodiment, the liquid container alternatively or additionally serves to store the liquid to be dispensed by means of the liquid dispensing device. Naturally, two or more separate liquid containers can also be provided for the respective purpose. If the liquid container is a component of the liquid intake device, it can also be referred to as a wastewater container, specifically a wastewater tank.If the liquid container is associated with the liquid dispensing device, it can also be referred to as a fresh water container, specifically a fresh water tank. If the liquid container is designed for both receiving and dispensing the liquid, it can also be referred to as a recycling container, particularly a recycling tank. Preferably, the at least one liquid container is detachably attached to the surface cleaning device. In one embodiment, the liquid container is attached to the surface cleaning head. Alternatively or additionally, it can be attached to the guide element and / or a carrying device. The optional carrying device is designed for wearing on the user's body, for example, in the form of a backpack, a hip belt, a shoulder strap, or the like. Furthermore, preferably, the at least one liquid container is elongated along the guide element.

[0047] In a further embodiment of the invention, the surface cleaning device comprises at least one liquid delivery device, wherein the liquid delivery device is a component of the liquid intake device and / or a component of the liquid delivery device. The liquid delivery device of the liquid intake device can, for example, be a suction drive, specifically a suction turbine. The liquid delivery device of the liquid delivery device can, for example, be a pump. In embodiments that provide for gravity-driven liquid delivery, the liquid delivery device can also be designed as a controllable valve. Preferably, the at least one liquid delivery device is detachably mounted. In one embodiment, the at least one liquid delivery device is mounted on the surface cleaning head.In a further embodiment, at least one liquid conveying device is attached alternatively or additionally to the guide part or the aforementioned support device.

[0048] In a further embodiment of the invention, the surface cleaning device comprises at least one energy storage device configured to supply at least the drive unit with operating energy. Preferably, the energy storage device is configured to store electrical energy and / or is designed as a rechargeable battery. Alternatively, an energy storage device in the form of a compressed air reservoir or the like is conceivable and possible. Preferably, the at least one energy storage device is detachably mounted. In one embodiment, the energy storage device is mounted on the surface cleaning head. In another embodiment, the energy storage device is alternatively or additionally mounted on the guide element and / or the aforementioned support device. Several energy storage devices can also be provided and mounted on different components of the surface cleaning device.

[0049] In a further embodiment of the invention, the surface cleaning device has a bearing assembly by means of which the guide part and the surface cleaning head are movably connected relative to each other. Preferably, the distal end of the guide part is connected to the surface cleaning head via the bearing assembly. The bearing assembly allows the position and / or orientation of the guide part relative to the surface cleaning head to be changed and vice versa. This makes it possible to reach even difficult-to-access, narrow, and built-over areas of the surface to be cleaned. In a preferred embodiment, the direction of movement of the surface cleaning head can be controlled by moving the guide part relative to the surface cleaning head. It is also conceivable that the surface cleaning head is movable relative to the guide part, for example, by means of a servo motor.In one embodiment, the surface cleaning head and the guide element are connected to each other by means of the bearing assembly so that they can pivot and / or rotate relative to each other. In this case, the relative movement is a pivoting and / or rotating movement.

[0050] In a further embodiment of the invention, the bearing assembly is designed such that the guide element is movable relative to the surface cleaning head in different inclined positions. In one embodiment, the bearing assembly allows the guide element to pivot relative to the surface cleaning head in at least one pivot plane. In one embodiment, the guide element is pivotable relative to the surface cleaning head by at least 10°, preferably at least 30°, more preferably at least 45°, more preferably at least 60°, more preferably at least 90°, more preferably at least 120°, more preferably at least 150°, and more preferably at least 180° within said pivot plane. In a further embodiment, the bearing assembly allows the guide element to pivot relative to the surface cleaning head in at least two, in particular orthogonal, pivot planes.In one embodiment, the guide element is pivotable relative to the surface cleaning head by at least 10°, preferably at least 30°, more preferably at least 45°, more preferably at least 60°, more preferably at least 90°, more preferably at least 120°, more preferably at least 150°, and more preferably at least 180° within a first pivot plane of said two pivot planes. In another embodiment, the guide element is pivotable relative to the surface cleaning head by at least 10°, preferably at least 30°, more preferably at least 45°, more preferably at least 60°, more preferably at least 90°, more preferably at least 120°, more preferably at least 150°, and more preferably at least 180° within a second pivot plane of said two pivot planes.Preferably, the guide element is pivotally movable at least within the first pivot plane and the second pivot plane, particularly in any combination of angles within these angular ranges. In one embodiment, the guide element is pivotally movable at least in one pivot plane with respect to an imaginary or actual vertical orientation of the guide element, at least in one direction, for example, backward, forward, and / or laterally, by at least 10°, preferably at least 30°, more preferably at least 45°, more preferably at least 60°, and more preferably up to 90°. In a further embodiment, the bearing arrangement allows the guide element to pivot in all directions relative to the surface cleaning head.Preferably, the guide element is pivotable around its circumference and in all directions by at least 10°, preferably by at least 30°, more preferably by at least 45°, more preferably by at least 60°, more preferably by up to 90°, with respect to an imagined or actually attainable vertical orientation of the guide element.

[0051] In a further embodiment of the invention, the bearing assembly is designed such that the surface cleaning head, particularly in the different tilt positions of the guide element, is rotatable about the vertical axis relative to the guide element. In one embodiment, the surface cleaning head is rotatable about the vertical axis relative to the guide element by at least 10°, preferably at least 30°, more preferably at least 45°, more preferably at least 60°, more preferably at least 90°, more preferably at least 120°, more preferably at least 150°, more preferably at least 180°, more preferably at least 210°, more preferably at least 240°, more preferably at least 270°, more preferably at least 300°, more preferably at least 330°, and more preferably at least 360°.

[0052] In a further embodiment of the invention, the bearing assembly forms a gimbal connection between the guide element and the surface cleaning head. This allows the surface cleaning head to be rotated about its vertical axis and in a plane of rotation parallel to the surface by rotating the guide element about its longitudinal axis, thus controlling the direction of movement of the surface cleaning head. The gimbal connection allows this controllability of the surface cleaning head's direction of movement in different orientations of the longitudinal axis of the guide element relative to the vertical axis of the surface cleaning head. In other words, the gimbal connection allows the surface cleaning head to be rotated by turning the guide element while resting on the surface, even if the guide element is inclined.The gimbal connection between the guide element and the surface cleaning head allows for particularly simple and intuitive maneuverability of the surface cleaning head, while simultaneously enabling a simple bearing assembly. The gimbal connection can be designed in various ways. In one embodiment, the bearing assembly features a universal joint with two orthogonal joint axes, which can be formed by structural elements or be axes in the geometric sense. In another embodiment, the gimbal connection is formed by a solid joint, a spring joint, or the like.

[0053] In a further embodiment of the invention, the surface cleaning head is rotatable by means of a rotation of the guide part by at least 10°, preferably by at least 30°, more preferably by at least 45°, more preferably by at least 60°, more preferably by at least 90°, more preferably by at least 120°, more preferably by at least 150°, more preferably by at least 180°, more preferably by at least 210°, more preferably by at least 240°, more preferably by at least 270°, more preferably by at least 300°, more preferably by at least 330°, more preferably by at least 360°.

[0054] The additional tool assembly according to the invention is provided for a surface cleaning head and / or a surface cleaning device as described above. The additional tool assembly according to the invention is designed for attachment to the surface cleaning head. Preferably, the additional tool assembly is designed for detachable attachment. Preferably, the additional tool assembly is designed for attachment to the support structure. The additional tool assembly comprises at least one additional tool which, during operation of the surface cleaning head, rests on the surface to be cleaned, preferably along the vertical axis of the surface cleaning head.In a state attached to the surface cleaning head, the at least one auxiliary tool is arranged offset relative to the at least one main tool along the transverse axis of the surface cleaning head and extends along the transverse axis over an auxiliary tool width in order to act on the surface to be cleaned in addition to the at least one main tool, thereby forming a wider overall tool width of the surface cleaning head. Further features and associated advantages of the auxiliary tool arrangement will become apparent from the preceding disclosure of the surface cleaning head according to the invention, the surface cleaning device according to the invention, and the respective embodiments. What is disclosed therein regarding the auxiliary tool arrangement of the surface cleaning head also applies, mutatis mutandis, to the auxiliary tool arrangement according to the invention and its embodiments. In a further embodiment of the invention, in particular in which the auxiliary tools orSince the auxiliary tool assembly is neither detachable nor switchable between an operating and non-operating position, it is advantageously provided that, in addition to two main tools, preferably two disc tools, two auxiliary tools are provided. This allows for the creation of a surface cleaning head with a (permanently) increased working width. At the same time, such a surface cleaning head is also narrower and allows for a flatter design. This becomes particularly clear when the main tools and the auxiliary tools are disc-shaped: If, for example, a working width of 40 cm is to be achieved by two disc-shaped tools, these must each have a diameter of 20 cm, and thus the depth of the surface cleaning head is also at least 20 cm.If, instead, two main tools with a diameter of 15 cm each and two auxiliary tools with a diameter of 5 cm are used, a working width of 40 cm is also achieved, but the depth is 15 cm in the area of ​​the main tools alone and 5 cm in the area of ​​the auxiliary tools alone. This also means that such a surface cleaning head offers advantages over conventional surface cleaning heads in terms of cleaning performance, for example, in terms of maneuverability and cleaning in corners, in hard-to-reach areas, or under protrusions.

[0055] Such a design opens up various possibilities for the configuration of main and auxiliary tools and their arrangement relative to one another. At the same time, this offers several advantages. In a configuration with equally sized main and auxiliary tools, which, for example, are arranged with their respective axes of rotation on a common reference axis or on a curve open forwards or backwards in the machining direction of the surface cleaning head (which could also be described as U-shaped), a uniform and homogeneous cleaning performance and effect on the surface can be achieved across the entire machining width while maintaining a low depth of penetration.In contrast, if in a further embodiment of an arrangement as described above the additional tools are arranged in the outer area of ​​the surface cleaning head and are designed with a smaller diameter compared to the main tools, an even shallower depth can be achieved in the outer areas of the surface cleaning head, and the cleaning of hard-to-reach areas as well as corners and the like is made easier.

[0056] In a further embodiment of the invention, the direction of rotation of the main tools and auxiliary tools is set and predetermined such that liquid and dirt are transported by the auxiliary tools in the outer regions of the surface cleaning head to the main tools and can then be fed by the main tools into a correspondingly designed receptacle. This means that, for example, starting from the center of the surface cleaning head and with an even number of main and auxiliary tools, for example 4 (2 x 2), the centrally arranged main tools rotate in opposite directions towards the center, while the auxiliary tools, or the main and auxiliary tools located further outwards, rotate in the same direction as the respective adjacent main tool.

[0057] Further advantages and features of the invention will become apparent from the claims and from the following description of preferred embodiments of the invention, which are illustrated with reference to the drawings.

[0058] They show:

[0059] Fig. 1 is a schematic block representation of an embodiment of a

[0060] surface cleaning system comprising an embodiment of a surface cleaning device and an embodiment of at least one functional module which is designed for connection to at least one module interface of the surface cleaning device,

[0061] Fig. 2 is a schematic block representation of an embodiment of a

[0062] Surface cleaning system,

[0063] Fig. 3 shows a schematic block representation of individual components of a

[0064] Tool module, liquid absorption module, particle absorption module and liquid dispensing module of the surface cleaning systems according to Figs. 1 and 2,

[0065] Fig. 4 shows a schematic representation of a specific embodiment of the

[0066] Tool module,

[0067] Fig. 5 shows a schematic representation of another specific embodiment of the

[0068] Tool module,

[0069] Fig. 6 shows a schematic front view of an embodiment of a

[0070] Surface cleaning head with a main tool assembly and a tool module that functions as an additional tool assembly, Fig. 7, 8 in schematic front view (Fig. 7) and side view (Fig. 8) an embodiment of a surface cleaning device with a surface cleaning head and a guide part, which are mounted to be movable relative to each other by means of a bearing assembly,

[0071] Figures 9 to 16 show further schematic views to illustrate the operation of the storage device.

[0072] Fig. 17 shows a schematic block representation of an embodiment of a surface cleaning device with a surface cleaning head and a guide part, which are detachably connected to each other by means of a connecting device.

[0073] Fig. 18 shows a schematic block representation of the surface cleaning device according to Fig. 17 together with an enlarged schematic detail representation to illustrate further features of the connecting device.

[0074] Fig. 19 shows a schematic block diagram of an embodiment of a surface cleaning device together with optional

[0075] Functional devices / modules, namely a tool device, a propulsion device, a liquid intake device, a particle intake device, a liquid discharge device, an electrical functional device, and an autonomous guidance device / robotics module,

[0076] Fig. 20 shows a schematic block representation of an embodiment of a surface cleaning system with several different surface cleaning heads and several different guide parts, each of which can be optionally connected to each other detachably by means of a connecting device.

[0077] Fig. 21 shows a schematic block representation of an embodiment of a surface cleaning device with a surface cleaning head, a guide arrangement and an adapter device, which is used to form a joining connection and a drive train connection between the

[0078] The guide arrangement and the surface cleaning head are set up, Fig. 22 shows a further schematic block representation of the surface cleaning device according to

[0079] Fig. 21 together with an enlarged schematic detail to illustrate further features of the adapter device,

[0080] Fig. 23 shows another schematic block diagram to illustrate features of a specifically designed adapter device,

[0081] Fig. 24 shows a schematic block representation of an embodiment of a surface cleaning device with an adapter device together with other optional functional devices / modules.

[0082] Fig. 25 shows a schematic side view of an embodiment of a surface cleaning device with an adapter device, a storage device, a liquid intake device and a liquid dispensing device.

[0083] Fig. 26 shows a schematic block representation of an embodiment of a

[0084] Surface cleaning system with several different

[0085] surface cleaning heads and several different

[0086] Guide arrangements that can be optionally connected to each other by means of an adapter device,

[0087] Fig. 27 shows a schematic block representation of an embodiment of a surface cleaning device with an embodiment of a surface cleaning head and a guide part, wherein the surface cleaning head has a main tool assembly and an auxiliary tool assembly,

[0088] Figs. 28, 29, 30 are schematically simplified representations of specifically designed main and / or auxiliary tools in the form of a disc tool (Fig. 28), a roller tool (Fig. 29) and an eccentric tool (Fig. 30).

[0089] Fig. 31 shows a schematic front view of an embodiment of a surface cleaning head with an additional tool device, wherein this has a separate additional drive,

[0090] Fig. 32 shows a schematic front view of an embodiment of a surface cleaning head with an additional tool device, wherein the main tool and the additional tool are connected to each other by a transmission device for drive purposes.

[0091] Fig. 33 shows a schematic front view of an embodiment of a surface cleaning head with a specifically designed transmission device,

[0092] Fig. 34 shows a schematic front view of an embodiment of a surface cleaning head with a fastening device for the detachable attachment of an additional tool device.

[0093] Fig. 35 shows a schematic front view of an embodiment of a

[0094] Surface cleaning head with two detachably attached

[0095] Additional tooling equipment

[0096] Fig. 36 shows a schematic top view of the main tools and auxiliary tools, each designed as a disc tool and arranged and driven in a specific configuration.

[0097] Figures 37 to 42 show further examples in a representation corresponding to Figure 36.

[0098] Configurations of main tools and auxiliary tools,

[0099] Fig. 43 shows a schematic block representation of an embodiment of a surface cleaning device with a main and auxiliary tool assembly as well as with optional functional equipment / modules (storage unit, propulsion unit, liquid collection unit,

[0100] Liquid dispensing device, electrical functional device),

[0101] Fig. 44 shows a schematic block representation of main tools and auxiliary tools in a specific configuration together with a fluid intake device and a fluid discharge device.

[0102] Fig. 45 shows a schematic block representation of a further embodiment of a surface cleaning device with an embodiment of a surface cleaning head, the tool assembly of which has a disc tool which has an output gear of a transmission assembly; Fig. 46 shows a schematic top view of the transmission assembly and the disc tool of the surface cleaning head according to Fig. 45.

[0103] Fig. 47 shows a schematic top view of an alternatively designed disc tool / drive wheel.

[0104] Fig. 48 shows a schematic side view of a specific embodiment of a disc tool with a machining attachment in the form of a textile structure.

[0105] Fig. 49 shows a schematic side view of a specifically designed

[0106] Disc tool with a processing attachment in the form of bristles,

[0107] Fig. 50 is a schematic top view of an embodiment with a first

[0108] disc tool and a second disc tool and a gear unit, wherein the first disc tool acts as a drive wheel for the second disc tool,

[0109] Fig. 51 shows a schematic top view of an embodiment with two disc tools and a gear unit, wherein the disc tools are driven by means of a drive wheel,

[0110] Fig. 52 shows a schematic top view of an embodiment with two main disc tools and two auxiliary disc tools, which are operatively connected to each other by means of a gear unit / transmission unit.

[0111] Fig. 53 shows a schematic side view of an embodiment of a surface cleaning device with a transmission device, a

[0112] Storage facility, a liquid collection device and a

[0113] Liquid dispensing device,

[0114] Fig. 54 shows a schematic perspective view of another embodiment of a surface cleaning device with an embodiment of a

[0115] surface cleaning head and an embodiment of a guide part, Fig. 55 the surface cleaning device according to Fig. 54 in a perspective view rotated by about 90°,

[0116] Fig. 56 shows a perspective detail view of the surface cleaning device according to Figs. 54 and 55 in the area of ​​the surface cleaning head.

[0117] Fig. 57 shows another detailed view looking towards the underside of the surface cleaning head tilted into a park position with attached auxiliary tools,

[0118] Fig. 58 shows a further detailed view corresponding to Fig. 57, with the additional tools removed and replaced by additional guide elements.

[0119] Fig. 59 shows a perspective exploded view of the surface cleaning head with various optionally attachable main tools as well as the additional tools and the additional guide elements.

[0120] Fig. 60 shows another perspective exploded view of the configuration according to Fig. 59, looking towards the underside of the surface cleaning head tilted into a park position.

[0121] Fig. 61 shows a perspective detail view of the surface cleaning head according to Figs. 54 to 60, with one of the two additional tool devices shown in an exploded view.

[0122] Fig. 62 shows an enlarged detail view of a connecting device of the surface cleaning device according to Figs. 54 to 61, wherein the connecting device is in a disconnected state.

[0123] Fig. 63 shows a schematic perspective view of another embodiment of a surface cleaning device with a non-removable additional tool attachment.

[0124] Fig. 64 is a perspective exploded view of the surface cleaning device according to Fig. 63, Fig. 65 is a cut-out and partially exploded perspective view of an embodiment of a surface cleaning head with a non-removable auxiliary tool device and a transmission device / gear unit,

[0125] Fig. 66 shows another perspective view of the surface cleaning head according to Fig. 65,

[0126] Fig. 67 shows a cut-out and partially exploded perspective view of another embodiment of a surface cleaning head with a non-removable auxiliary tool device and a motor gearbox that is upstream of the transmission device / gearbox device.

[0127] Fig. 68 shows a schematic perspective view of another embodiment of a surface cleaning device with an embodiment of a surface cleaning head, an embodiment of a guide part and removable additional tool devices, each of which has an additional drive motor.

[0128] Fig. 69 shows a schematic perspective view of the surface cleaning head according to Fig. 68 with the additional tool attachments removed.

[0129] Fig. 70 shows a schematic perspective view of another embodiment of a surface cleaning head with removable auxiliary tool devices without separate auxiliary drive motors.

[0130] Fig. 71 shows a schematic perspective view of an embodiment of a surface cleaning system with several different surface cleaning heads, a guide arrangement and an adapter device for the optional mechanical and drive-related connection of the guide arrangement with the surface cleaning heads.

[0131] Fig. 72 shows a perspective detail view to illustrate further features of the adapter device of the surface cleaning system according to Fig. 71, in which a first surface cleaning head of the surface cleaning heads is shown in detail.

[0132] Figs. 73, 74 are illustrations corresponding to Fig. 72, wherein the second surface cleaning head (Fig. 73) and the third surface cleaning head (Fig. 74) are shown in detail; Fig. 75 is a schematic perspective view of an embodiment of an autonomous surface cleaning robot with an embodiment of a surface cleaning head and an embodiment of an autonomous guide device.

[0133] Fig. 76 shows a schematic perspective view of an embodiment with two disc tools and two additional disc tools, which are connected to each other by means of a gear mechanism, and

[0134] Fig. 77 shows the embodiment according to Fig. 76 in a partially exploded perspective view.

[0135] Figures 1 to 77 show different embodiments of surface cleaning devices G1 to G9 and different embodiments of surface cleaning systems S1 to S4. The function and design of the surface cleaning devices G1 to G9 are largely identical. The same applies, mutatis mutandis, to the surface cleaning systems S1 to S4. Individual features and combinations of features of the surface cleaning devices G1 to G9 and the surface cleaning systems S1 to S4 can be combined to form further combinations of features.

[0136] Known surface cleaning devices are designed to perform specific cleaning tasks and are therefore unsuitable, less suitable, or only suitable with inefficiencies for performing other cleaning tasks or tasks that deviate from the requirements. For example, a known surface cleaning device with a small working width can be very advantageous for cleaning narrow, intricate, or difficult-to-access areas, such as several small offices or rooms. However, this known surface cleaning device is less suitable than one with a large working width for cleaning a large and easily accessible area, such as a wide corridor or hallway connecting all the aforementioned rooms, as might be the case in a hospital.A similar situation arises with other functions that a surface cleaning device can be equipped with, in the sense of a rigid design – the function is either present to a given extent or not. To fulfill various cleaning tasks, it may therefore be necessary, for reasons of efficiency, to use different surface cleaning devices, which means having to keep these devices on hand or accepting efficiency disadvantages. With the surface cleaning devices G1 to G9 and / or the surface cleaning systems S1 to S4, the need to provide several different surface cleaning devices can be eliminated, thus saving the associated effort and avoiding the disadvantages traditionally associated with this approach.

[0137] According to Fig. 1, a surface cleaning system S1 comprises a surface cleaning device G1 and at least one functional module M1 to M1. nThe surface cleaning system S1 is shown schematically in a highly simplified form in Fig. 1.

[0138] The surface cleaning device G1 is designed for cleaning, in particular wet cleaning, a surface F. The surface F to be cleaned is, in this case, a floor surface, for example, a floor surface in a building, such as a hard floor or carpet.

[0139] The surface cleaning device G1 has a surface cleaning head 100 and a guide part 200.

[0140] The surface cleaning head 100 rests on the surface F to be cleaned during operation of the surface cleaning device G1 and is set up to act on the surface F.

[0141] The guide element 200 is designed for guiding the surface cleaning head 100, particularly manually, over the surface F to be cleaned. For this purpose, the guide element 200 is mechanically connected to the surface cleaning head 100. The mechanical connection between the guide element 200 and the surface cleaning head 100 is preferably detachable. Alternatively, the mechanical connection can be permanent.

[0142] The surface cleaning device G1 also has at least one module interface C1, C2, which is assigned to the surface cleaning head 100 and / or the guide part 200 and is used to connect the at least one functional module M1 to M n is set up on the surface cleaning device G1.

[0143] At least one functional module M1 to M n is set up for connection to at least one module interface C1, O2 and for providing at least one function.

[0144] The functions to be provided by at least one function module M1 to M n In particular, this can be a tool function, a propulsion function, a liquid intake function, a particle intake function, a liquid dispensing function, a control function, and / or a robotics function. These functions enable and / or support the cleaning of surface F. In the embodiment shown, the surface cleaning system S1 has several different functional modules M1 to M1. n on. The several functional modules M1 to M n differ in terms of their respective function.

[0145] Due to the modular design of the S1 surface cleaning system, the G1 surface cleaning device can be optionally connected to one or more of the different functional modules M1 to M1. nin an improved way, they can be adapted to each specific cleaning task. This involves the use of several different functional modules, M1 to M1. nEach module, individually or in combination, can be connected to the surface cleaning device via at least one module interface, C1 or C2. It should be emphasized that configurations of the surface cleaning device and the surface cleaning system are also conceivable in which some, most, or even all of the aforementioned functional modules are already integrated as components or features of the surface cleaning device or system and thus do not constitute separate functional modules. In such a configuration, only some, a few, or a single function are designed as modules, while all other functions, or a selection thereof, are an integral part of the surface cleaning device or system.If all functional modules are an integral part or feature of the surface cleaning device or system, a functional module may be designed to complement, improve, or enhance an existing function.

[0146] In the illustrated embodiment, the surface cleaning device has several functional interfaces C1 and C2, which can also be referred to as the first module interface C1 and the second module interface C2. The first module interface C1 is assigned to the surface cleaning head 100. The second module interface C2 is assigned to the guide part 200. It is understood that both the surface cleaning head 100 and the guide part 200 can each have several identical or different module interfaces.

[0147] In the illustrated embodiment, the surface cleaning head 100 has several module interfaces C11, C12, C13, C14, C15, C16. Furthermore, the guide part 200 has several module interfaces C21, C22, C23, C24, C25, C26.

[0148] The module interfaces C11 and C21 are each for the mechanical connection of at least one of the function modules M1 to M1. n They are configured and can also be referred to as mechanical module interfaces C11 and C21. Module interfaces C11 and C21 serve, for example, to detachably attach one or more of the function modules M1 to M21. n The module interfaces C12 and C22 are each used for the drive-related connection of at least one of the function modules M1 to M1. nThese interfaces are configured and can also be referred to as drive module interfaces C12 and C22. Module interfaces C12 and C22 are used, for example, to transmit drive motion, drive force, drive torque, and / or drive power.

[0149] The module interfaces C13 and C23 are each used for the electrical connection of at least one of the function modules M1 to M1. n They are configured and can also be referred to as electrical module interfaces C13 and C23. Module interfaces C13 and C23 are used, for example, for the transmission of electrical energy or electrical signals.

[0150] The module interfaces C14 and C24 are each used for data connection to at least one of the function modules M1 to M1. nThese interfaces are configured and can also be referred to as data module interfaces C14 and C24. Module interfaces C14 and C24 are used, for example, to transmit data representing operating parameters, measured values, or the like, or for controlling and operating the surface cleaning device or system. In this respect, module interface C14 and / or C24 can also be designed for wireless data or signal transmission, for example, via radio, in a WLAN network, or via Bluetooth, and thus also for connecting at least one function module M1 to M24. n Wireless communication is possible, for example via radio, in a WLAN network or via Bluetooth.

[0151] The module interfaces C15 and C25 are each for the fluid-conducting connection of at least one of the functional modules M1 to M1. nThese interfaces are configured and can also be referred to as liquid-conducting module interfaces C15 and C25. Module interfaces C15 and C25 are used, for example, to transfer liquid that is to be dispensed onto the surface (fresh water) and / or absorbed by it (wastewater).

[0152] The module interfaces C16 and C26 are each for the air-conducting connection of at least one of the function modules M1 to M1. n These interfaces are configured and can also be referred to as pneumatic or air-conducting module interfaces C16 and C26. Module interfaces C16 and C26 are used, for example, to transmit an airflow, in particular a suction airflow.

[0153] Furthermore, the surface cleaning head 100 and the guide part 200 can each be considered a type of functional module. For example, the module interfaces C11 to C16 of the surface cleaning head 100 can (also) be used to connect the guide part 200. Similarly, the module interfaces C21 to C26 of the guide part 200 can (also) be used to connect the surface cleaning head 100.

[0154] The several functional modules M1 to M n They can each be set up as an add-on module MS and / or as an exchange module ME.

[0155] An MS add-on module is a functional module designed for supplementary connection to the G1 surface cleaning device, its function complementing an existing function, particularly the cleaning function, of the G1 surface cleaning device. This functional enhancement by means of the MS add-on module can be quantitative, qualitative, and / or complementary.

[0156] An exchange module ME is understood to be a functional module that is intended for interchangeable connection in place of at least one other functional module, wherein its function replaces an existing function, in particular cleaning function, of the other functional module.

[0157] In the embodiment shown in Fig. 2, functional modules M1 to M7 are present, which can also be designated as first functional module M1, second functional module M2, third functional module M3, fourth functional module M4, fifth functional module M5, sixth functional module M6, and seventh functional module M7. It is understood that embodiments with a smaller or even larger number of functional modules are also conceivable and possible. The embodiment shown in Fig. 2 is to be understood as purely exemplary.

[0158] The first functional module M1 is a tool module 300, 1300. The second functional module M2 is a propulsion module 400. The third functional module M3 is a liquid intake module 500. The fourth functional module M4 is a particle intake module 600. The fifth functional module is a liquid discharge module 700. The sixth functional module M6 is a control module 800. The seventh functional module M7 is a robotics module 900.

[0159] Within the scope of the present disclosure, the tool module 300, 1300 can also be referred to as a tool assembly, in particular as the main tool assembly 300 and the auxiliary tool assembly 1300. The other designations can also be used synonymously: propulsion module 400 and propulsion assembly, liquid intake module 500 and liquid intake assembly, particle intake module 600 and particle intake assembly, liquid discharge module 700 and liquid discharge assembly, control module 800 and control assembly, and robotics module 900 and robotics assembly.

[0160] The aforementioned modules / devices 300, 1300, 400, 500, 600, 700, 800, and 900 can each be connected individually or in various combinations to the G1 surface cleaning device. This requires the use of at least one of the module interfaces C11 to C26.

[0161] The tool module 300, 1300 is designed to act on the surface to be cleaned, for example, for scrubbing, grinding, and / or polishing. The tool module 300, 1300 can be configured as the (sole) tool unit 300 and / or as a supplementary additional tool unit 1300. In contrast to a tool, the tool module 300, 1300 comprises at least the tool itself and at least one further component, in particular a tool suspension and / or a fastening device, preferably within a support structure and / or additional support structure and / or structure for fastening to other components.

[0162] In the embodiment shown, the tooling unit 300 comprises at least one tool 310, one drive motor 320, and one drive train 330. If the tooling module 300, 1300 is configured as an additional tooling unit 1300, it can also be referred to as an additional tool 1310, an additional drive motor 1320, and an additional drive train 1330.

[0163] In the connected state of the tool assembly 300, the at least one tool 310 rests on the surface F, preferably along a vertical axis Z of the surface cleaning head 100, and is movable relative to the surface cleaning head 100 by means of the drive motor 320. The tool 310 is operatively connected to the drive motor 320 via the drive train 330, transmitting force and motion. The same applies analogously to the at least one additional tool 1310, the additional drive motor 1320, and the additional drive train 1330.

[0164] The thrusting device 400 is configured to generate a thrust force VK along a thrust direction VR (see Fig. 3). The thrust direction 400 is preferably oriented parallel to a longitudinal axis X of the surface cleaning head 100. The thrust force VK is dimensioned differently depending on the configuration of the thrusting device 400. In one configuration, the thrust force VK assists the movement of the surface cleaning head 100 across the surface F. In another configuration, the thrust force VK causes the movement of the surface cleaning head 100. The thrusting device 400 can be connected to the surface cleaning unit G1 via at least one of the functional interfaces C11 to C26. This connection can be made in place of or in addition to one of the other functional modules M1, M2, M3, M5, M6, or M7.By connecting the propulsion unit 400, the effort required by the user to move the surface cleaning device G1 can be reduced. With a sufficiently high propulsion force VK, the user's effort can be reduced to a minimum, allowing the user to simply guide or steer the propelled movement of the surface cleaning head 100.

[0165] In the embodiment shown, the propulsion device 400 comprises a propulsion element 410 and a propulsion drive 420. The propulsion element 410 is driven by the propulsion drive 420 so that it is movable relative to the surface cleaning head 100 and rests, specifically in a sliding and / or rolling manner, on the surface F to be cleaned.

[0166] The liquid collection device 500 is designed to collect liquid from surface F. Specifically, the liquid to be collected is wastewater generated during the cleaning of surface F. The liquid collection device 500 can be connected to the surface cleaning unit G1 via at least one of the functional interfaces C11 to C26. This connection can be made in place of, or in addition to, one of the other functional modules M1, M2, M4, M5, M6, or M7. The liquid collection device 500 can have any design suitable for this purpose.

[0167] In the illustrated embodiment, the liquid receiving device 500 comprises a liquid receiving area 510, a liquid conveying device 520, and a liquid reservoir 530. The liquid receiving area 510 is configured to receive the liquid from the surface F. The liquid reservoir 530 is configured to store the liquid received by means of the liquid receiving area 510. The liquid conveying device 520 is configured to convey the liquid to be received between the liquid receiving area 510 and the liquid reservoir 530. For example, the liquid conveying device 520 is arranged between or in a fluid path downstream of the liquid receiving area 510 and / or the liquid reservoir 530.

[0168] The particle collection unit 600 is designed to collect particles from surface F. Specifically, the particles to be collected are dirt particles. The particle collection unit 600 can be connected to the surface cleaning device G1 via one or more of the functional interfaces C11 to C26. This connection can be made in place of, or as an addition to, at least one of the other functional modules M1, M2, M3, M5, M6, or M7. The particle collection unit 600 can, in principle, have any design suitable for the intended purpose.

[0169] In the illustrated embodiment, the particle collection device 600 comprises a particle holder 610, a particle conveying device 620, and a particle container 630. The particle holder 610 is configured to collect the particles from the surface F. The particle container 630 is configured to store the particles collected by the particle holder 610. The particle conveying device 620 is configured to convey the particles to be collected between the particle holder 610 and the particle container 630. In one embodiment, the particle collection device 600 is configured to vacuum up the particles. In this case, the particle conveying device 620 is configured to generate a vacuum and / or a suction airflow. In a further embodiment, the particle collection device 600 is configured to sweep up the particles. In this case, the particle holder 610 and / or the particle conveying device 620 are designed as a sweeping tool.

[0170] The liquid dispensing device 700 is designed to dispense liquid onto surface F. The liquid to be dispensed could be, for example, fresh water to which a cleaning solution may be added. Dispensing liquid onto surface F can, in particular, support the cleaning function of the tool units 300 and 1300. During the cleaning of surface F, the liquid dispensed by the liquid dispensing device 700 becomes contaminated with dirt and, if present and connected to the surface cleaning unit G1, can be collected from surface F by the liquid collection device 500. The liquid dispensing device 700 can be connected to the surface cleaning unit G1 via at least one of the functional interfaces C11 to C26. This connection can be made in place of, or as an addition to, at least one of the other functional modules M1, M2, M3, M4, M6, or M7.The liquid dispensing device 700 can have any design suitable for the present purpose.

[0171] In the illustrated embodiment, the liquid dispensing device 700 comprises a liquid dispensing unit 710, a liquid conveying unit 720, and a liquid reservoir 730. The liquid dispensing unit 710 is configured for the direct or indirect dispensing of the liquid onto the surface F and can also be referred to as a liquid outlet. The liquid reservoir 730 is configured for storing the liquid to be dispensed. The liquid conveying unit 720 serves to convey the liquid to be dispensed between the liquid reservoir 730 and the liquid dispensing unit 710. In one embodiment, the liquid conveying unit 720 includes a pumping device for pumping the liquid to be dispensed.In a further embodiment, the liquid conveying device 720 alternatively or additionally has a valve device for controlled opening and closing of a liquid path extending between the liquid container 730 and the liquid outlet 710.

[0172] The control unit 800 is designed to control operating parameters of the surface cleaning device G1. The operating parameters to be controlled are, in particular, operating parameters of at least one of the further function modules M1, M2, M3, M4, M5, or M7. The control unit 800 can be connected to the surface cleaning device G1 via at least one of the module interfaces C11 to C26. The control unit 800 can, in principle, have any design suitable for the present purpose.

[0173] In the illustrated embodiment, the control device 800 comprises a handheld device 810 and a data transmission device 820. The handheld device 810 can be designed, in particular, as a tablet, smartphone, or the like. The data transmission device 820 is preferably configured for wireless data transmission. For example, current actual values ​​of operating parameters can be sent or setpoint values ​​of operating parameters can be received by means of the data transmission device 820.

[0174] The robotic unit 900 is designed for the autonomous movement and control of the surface cleaning device G1. The robotic unit 900 can be connected to the surface cleaning device G1 via at least one of the module interfaces C11 to C26. In one embodiment, the robotic unit 900, when connected, engages the guide element 200. In another embodiment, the robotic unit 900 alternatively or additionally engages the surface cleaning head 100. In a further embodiment, the robotic unit 900 can be connected to the surface cleaning head 100 in place of the guide element 200 (see also Fig. 75).

[0175] The surface cleaning device G1 can be configured in various ways to perform different cleaning tasks by optionally connecting the functional modules / units 300, 1300, 400, 500, 600, 700, 800, and 900 individually or in combination. Figure 3 shows a schematic block diagram of a specific configuration in which the tool unit 300, the liquid intake unit 500, the particle intake unit 600, and the liquid dispensing unit 700 are connected to the surface cleaning device G1 in combination.

[0176] In the specific embodiment according to Fig. 3, the surface cleaning device G1 is specified in the form of a scrubber-dryer with upstream particle collection.

[0177] In the embodiment according to Fig. 3, the tool assembly 300 has two disc tools 311, 312, which can also be referred to as the first disc tool 311 and the second disc tool 312. The disc tools 311, 312 lie along the vertical axis Z on the surface F to be cleaned and are mounted on the surface cleaning head 100 so as to be rotatable about a rotation axis D1, D2, respectively. In this case, the disc tools 311, 312 are driven in opposite directions by means of the drive motor 320. The disc tools 311, 312 are arranged side by side along a transverse axis Y of the surface cleaning head 100.

[0178] Further with reference to Fig. 3, the liquid intake 510 is designed as a suction bar 511. The suction bar 511 is arranged behind the disc tools 311, 312 with respect to the longitudinal axis X and / or a primary direction of movement of the surface cleaning head 100. In this case, the suction bar 511 extends along the transverse axis Y over the entire width of both disc tools 311, 312. The suction bar 511 rests on the surface F along the vertical axis Z. At its longitudinally opposite end faces, the suction bar 511 is curved forward in the circumferential direction of the disc tools 311, 312 along the longitudinal axis X.

[0179] In the illustrated embodiment, the liquid outlet 710 is arranged along the longitudinal axis X in front of and between the two disc tools 311 and 312 with respect to the transverse axis Y. It is understood that multiple liquid outlets may also be present and, for example, distributed along the transverse axis Y. Alternatively or additionally, liquid can also be discharged centrally or in a central area into or through the disc tools 311 and 312. Indirect liquid discharge is also conceivable, for example, by discharge onto a tool that then conveys the liquid further onto the surface to be machined, for example, via a roller. In Fig. 3, the liquid reservoir 530 of the liquid receiving device 500 and the liquid reservoir 730 of the liquid dispensing device 700 are connected or short-circuited by means of a fluid line shown with dashed lines.This short circuit, or bypass, is optional. If present, the short circuit recirculates liquid drawn in via the liquid inlet 510 or the suction bar 511 back to the liquid outlet 710. In this case, one of the liquid reservoirs 530 or 730 can be omitted. Furthermore, only one of the liquid delivery devices 520 or 720 may then be required.

[0180] In the illustrated embodiment, the particle collection device 600, specifically the particle collection unit 610, is arranged in front of the liquid outlet 710 with respect to the longitudinal axis X, and thus also in front of the disc tools 311, 312 and the suction bar 511. In this case, the particle collection unit 610 is a suction bar 611, which is positioned slightly above the surface F along the vertical axis Z. The particle conveying device in this case has a suction device that is configured to generate a suction airflow. The suction bar 611 extends over the entire width of the disc tools 311, 312 with respect to the transverse axis Y.

[0181] During operation of the surface cleaning device G1, the surface cleaning head 100 is preferably moved forward parallel to the longitudinal axis X over the surface F to be cleaned, i.e., upwards with respect to the plane of Fig. 3. The specific design and arrangement of the suction bar 600, the liquid outlet 710, the disc tools 311, 312, and the suction strip 511 shown in Fig. 3 results in the following operating principle:

[0182] During forward movement along the longitudinal axis X, loose dirt on surface F is first vacuumed up by the suction bar 611. This achieves a preliminary or coarse cleaning of surface F. Simultaneously, surface F is scrubbed by the disc tools 311. This scrubbing is carried out with the addition of liquid (fresh water with or without cleaning solution) discharged via the liquid outlet 710. This enhances the scrubbing action of the disc tools 311, 312, and allows adhering dirt to be loosened and removed more effectively. Due to the rotating movement of the disc tools 311, 312 and the forward movement along the longitudinal direction X, dirt-laden liquid, which can also be referred to as dirty water, collects behind the disc tools 311, 312.The dirty water is collected by the suction bar 511 and stored in the liquid container 530 for later disposal. The surface cleaning device G1 can be moved manually by the user at the guide section 200 or alternatively by the optionally connected robotics module 900. To assist the user's movement, a thrust force VK can be generated along a thrust direction VR, for example, by means of the optionally connected thrust module 400. This thrust VK, VR can alternatively or additionally be generated by the tool unit 300, 1300, provided it is connected to the surface cleaning device G1.It is also conceivable that the surface cleaning device or the surface cleaning head itself generates propulsion, for example by means of a propulsion device of the surface cleaning device and / or the surface cleaning head, which may be permanently attached in certain designs.

[0183] In the embodiment shown in Fig. 4, the disc tools 311, 312 are locally subjected to an axial force P from the rear for this purpose. The local force applied to the disc tools 311, 312 causes a surface pressure between the disc tools 311, 312 and the surface F that is unevenly distributed in the circumferential direction around the respective axis of rotation D1, D2. The unevenly distributed surface pressure is accompanied by unevenly distributed frictional forces, which result in the thrust force VK along the thrust direction VR.

[0184] In the embodiment shown in Fig. 5, the feed VK, VR is generated by a slight inclination of the axes of rotation D1, D2. This inclination can be provided as an alternative or in addition to the local force application according to Fig. 4. Specifically, the two axes of rotation D1, D2 are inclined towards each other by a few degrees, starting from a precisely vertical orientation extending parallel to the vertical axis Z. This slight inclination of the two axes of rotation D1, D2 generates a surface pressure of unequal magnitude in the circumferential direction of the disc tools 311, 312 in contact with the surface F. The surface pressure increases radially from the respective axis of rotation D1, D2 towards the center between the two disc tools 311, 312.The respective rotary drive movement of the disc tools 311 , 312 generates unequal frictional forces due to the unequal surface pressure and thus the thrust force VK along the thrust direction VR.

[0185] Figure 6 shows a specific embodiment of a surface cleaning head 100 with a (main) tool assembly 300 and an auxiliary tool assembly 1300. The auxiliary tool assembly 1300 functions as an add-on module MS for the tool assembly 300. The auxiliary tool assembly 1300 has two separate tool module parts 1301 and 1302, which, when connected, are attached to the surface cleaning head 100 along the transverse axis Y on both sides of the tool assembly 300. The connection is made via a mechanical module interface in the form of a fastening device 1600 (see also, for example, Figures 34, 35, and 56). The tool module parts 1301 and 1302 can also be referred to as the first auxiliary tool unit 1301 and the second auxiliary tool unit 1302.

[0186] The tool assembly 300 comprises a first disc tool 311 and a second disc tool 312. The disc tools 311 and 312 are rotatably driven in the manner described with reference to Fig. 3. The drive is provided by the drive motor 320 via the drive train 330.

[0187] In the embodiment shown in Fig. 6, the tool module parts 1301, 1302 do not have a separate auxiliary drive. Instead, the auxiliary disc tools 1311, 1312 are driven by the rotation of the disc tools 311, 312 via a transmission device 1400. The transmission device 1400 functions here as a kind of drive-related module interface.

[0188] As already mentioned, the guide element 200 can be fixedly or detachably, and rigidly or movably, connected to the surface cleaning head 100. In the embodiment shown in Figures 7 and 8, the guide element 200 and the surface cleaning head 100 are movably connected to each other.

[0189] The guide element 200 extends longitudinally between a proximal end 201 and a distal end 202. Due to the longitudinal design of the guide element 200, a user can guide / move the surface cleaning head 100 across the surface F while maintaining an upright posture. The bearing device 1000 is located at the distal end 202 of the guide element 200.

[0190] In the illustrated embodiment, the bearing assembly 1000 allows the guide part 200 to pivot in different tilt positions relative to the surface cleaning head 100. The guide part 200 can be pivoted in both a YZ plane and an XZ plane. The bearing assembly 1000 can, in principle, be designed in any way suitable for the present purpose. In this instance, the bearing assembly 1000 forms a gimbal connection K between the guide part 200 and the surface cleaning head 100. This allows the surface cleaning head 100 to be rotated about a vertical axis H, which coincides with the vertical axis H of the surface cleaning head 100, by rotating the guide part 200 about its longitudinal axis L while resting on the surface F. This rotational mobility of the surface cleaning head 100 is possible in the different tilt positions of the guide part 200.The gimbal connection K allows for particularly easy and intuitive maneuvering of the surface cleaning head 100 across the surface F. This means that the direction of movement of the surface cleaning head 100 can be controlled very easily and intuitively by manually moving the guide element 200 via the gimbal connection K. If the surface cleaning device G1 is equipped with the optional drive unit 400 and / or a corresponding device of the optional tool unit(s) 300, 1300 to generate a drive VK, VR, the drive direction VR will be controlled via the rotational mobility of the surface cleaning head 100. In addition to this gimbal connection, any other connection that transmits such torque from the guide element to the surface cleaning head is conceivable and possible, for example, a solid or spring joint or the like.

[0191] The aforementioned controllability is illustrated by way of example in Figures 9 to 16. The thrust VK, VR generated by means of the drive unit 400 and / or the tool unit(s) 300, 1300 is symbolized in Figures 9 to 16 by a bold arrow.

[0192] In the situation shown in Fig. 9, the thrust VK, VR acts straight upwards with respect to the plane of Figs. 9 to 16. To change the thrust direction VR, the guide element 200 is rotated clockwise about its longitudinal axis L. This causes the surface cleaning head 100 to rotate clockwise about its vertical axis H, resting on the surface F. As the guide element 200 rotates further, the thrust direction VR of the surface cleaning head 100 changes clockwise about its vertical axis H. Fig. 10 shows a situation in which the thrust direction VK is rotated 45° to the right from the situation shown in Fig. 9. By rotating the guide element 100 further about its longitudinal axis L, the surface cleaning head 100 is rotated even further, with the orientations shown in Figs. 11 to 16 being purely illustrative.In different configurations, the surface cleaning head 100 can be rotated around its vertical axis H by varying degrees, for example by at least 10°, 30°, 45°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, 330° or by at least 360°. This rotational mobility of the...

[0193] The surface cleaning head 100 can be adjusted to different tilt positions of the guide part 200 (see Figs. 7, 8). It should be emphasized that the rotational mobility of the surface cleaning head 100 need not necessarily be coupled or operatively connected to the movement or rotation of the guide part 200 about its longitudinal axis; configurations are also conceivable and, depending on the application, even preferred, in which the rotational movement of the surface cleaning head 100 can be brought about independently of the movement of the guide part 200, for example by an actuator.

[0194] In one embodiment, the guide element 200 is pivotably movable relative to the surface cleaning head 100 by at least 10°, preferably at least 30°, more preferably at least 45°, more preferably at least 60°, more preferably at least 90°, more preferably at least 120°, more preferably at least 150°, and more preferably at least 180° within the pivot plane shown in Fig. 7. The same applies analogously with regard to the pivot plane shown in Fig. 8. In preferred embodiments, the guide element 200 is simultaneously pivotally movable within the pivot plane according to Fig. 7 and the pivot plane according to Fig. 8, in particular in any combination of angles within the aforementioned angular ranges.

[0195] In a preferred embodiment, the guide part 200 is pivotable in at least one of the two pivot planes shown in Figs. 7 and 8 with respect to an imaginary or actually attainable vertical orientation of the guide part 200 by at least 10°, preferably by at least 30°, more preferably by at least 45°, more preferably by at least 60°, more preferably by up to 90°.

[0196] In a particularly preferred embodiment, the bearing device 1000 allows the guide part 200 to pivot in all directions. Preferably, the guide part 200 is pivotable around its circumference and in all directions with respect to the imagined or actual vertical orientation of the guide part 200 by at least 10°, preferably by at least 30°, more preferably by at least 45°, more preferably by at least 60°, and more preferably by up to 90°.

[0197] Figure 17 shows another embodiment of a surface cleaning device G2 with a surface cleaning head 100 and a guide part 200. The surface cleaning device G2 is shown schematically in a highly simplified manner.

[0198] The surface cleaning head 100 is designed to act on the surface F to be cleaned and rests on surface F during operation of the surface cleaning device G2. The guide element 200 is designed to guide the surface cleaning head 100 across the surface F to be cleaned and is connected to the surface cleaning head 100 for this purpose via a mechanical connection MV. The mechanical connection MV can also be referred to as a mechanical joining connection.

[0199] The mechanical connection MV is formed by means of a connecting device 1100, which has a first connecting unit 1110 and a second connecting unit 1120.

[0200] The first connecting unit 1110 is assigned to the surface cleaning head 100. The second connecting unit 1120 is assigned to the guide part 200.

[0201] The connecting device 1100 can be switched between a connected state and a disconnected state. The connected state is shown in Fig. 17. The disconnected state is shown in Fig. 18. In the connected state, the first connecting unit 1110 and the second connecting unit 1120 are detachably joined together by forming the mechanical connection MV, either positively or by friction. In the disconnected state, the first connecting unit 1110 and the second connecting unit 1120 are separated from each other by breaking the mechanical connection MV.

[0202] The connecting device 1100 allows for easy separation and joining of the surface cleaning head 100 and guide part 200.

[0203] In the illustrated embodiment, the guide element 200 extends longitudinally between a proximal end 201 and a distal end 202. The second connecting unit 1120 is arranged at the distal end 202. The first connecting unit 1110 is arranged on a top surface 101 of the surface cleaning head 100.

[0204] In a further embodiment, the first connecting unit is arranged on a liquid intake, which can be assigned to the surface cleaning head, connected to it and / or be a component of the surface cleaning head.

[0205] In the embodiment shown, the connecting device 1100 can be moved between the connected state and the disconnected state by a user without the aid of tools (tool-free).

[0206] The connecting device 1100, and thus also the two connecting units 1110 and 1120, can in principle have any design suitable for the present purpose. For example, the first connecting unit 1110 and the second connecting unit 1120 can be configured to form a detachable screw connection MV1, a detachable plug connection MV2, a detachable clamp connection MV3, a detachable snap-fit ​​connection MV4, a detachable bayonet connection MV5, and / or a detachable magnetic connection MV6.

[0207] In the illustrated embodiment, the surface cleaning head 100 also has at least one first functional unit F1. The guide part 200 has at least one second functional unit F2. The first functional unit F1 and the second functional unit F2 are connected by means of at least one detachable functional connection FV1 to FV2. nThe two functional units F1 and F2, which extend between the surface cleaning head 100 and the guide part 200, are connected to each other. It is understood that the two functional units F1 and F2 are shown schematically in a highly simplified manner with regard to their shape, size, and arrangement on the surface cleaning head 100 and the guide part 200. Furthermore, it is understood that the surface cleaning head 100 can have several identical or different functional units. The same applies analogously to the guide part 200.

[0208] The functional units F1 and F2 may in particular be the functional modules M1 to M7 and / or components, parts and / or assemblies of the functional modules M1 to M7, as explained in particular with reference to Figs. 1 and 2.

[0209] At least one functional connection FV1 to FV nIn the embodiment shown, it comprises at least one fluid connection FV1, at least one electrical connection FV2, at least one signal connection FV3 and / or at least one drive train connection FV4.

[0210] The at least one fluid connection FV1 is configured for transferring a fluid. The at least one electrical connection FV2 is configured for transferring electrical energy. The at least one signal connection FV3 is configured for transferring signals, specifically electrical signals, data, or the like. The at least one drive train connection FV4 is configured for transferring mechanical drive energy, specifically in the form of torque and / or mechanical power.

[0211] To form the functional connections FV1 to FV nThe first connection unit 1110 has a first functional interface 1111 and the second connection unit 1120 has a second functional interface 1121 (see Fig. 18). The first functional interface 1111 and the second functional interface 1121 are connected in the connection state of the connection device 1100, forming at least one functional connection FV1 to FV1. n interconnected. In the disconnected state of the connection device 1100, the two functional interfaces 1111 and 1121 are disconnected, with at least one functional connection FV1 to FV1 being suspended. n separate from each other. The first functional interface 1111 and the second functional interface 1121 can therefore be connected and disconnected from each other by switching the connection device 1100 between the disconnect state and the connection state.

[0212] In the enlarged detail area of ​​Fig. 18, the two functional interfaces 1111 , 1121 are shown schematically in a highly simplified manner.

[0213] To form the fluid connection FV1, the first functional interface 1111 has a first fluid connector 1112 and the second functional interface 1121 has a second fluid connector 1122. The two fluid connectors 1112 and 1122 are complementary to each other.

[0214] To form at least one electrical connection FV2, the first functional interface 1111 has a first electrical contact 1113 and the second functional interface 1121 has a second electrical contact 1123. The two electrical contacts 1113 and 1123 are complementary to each other.

[0215] To establish the signal connection FV3, the first functional interface 1111 has a first signal connector 1114 and the second functional interface 1121 has a second signal connector 1124. The two signal connectors 1114 and 1124 are complementary to each other.

[0216] To form the powertrain connection FV4, the first functional interface 1111 has a first powertrain element 1115 and the second functional interface 1121 has a second powertrain element 1125. The two powertrain elements 1115 and 1125 are complementary to each other.

[0217] Depending on the number of functional connections to be formed, several fluid connectors, electrical contacts, signal connectors and / or drive train components may of course be present, each arranged in pairs or groups.

[0218] In the embodiment according to Fig. 19, the surface cleaning device G2 has at least one, and preferably several depending on the cleaning task to be performed, of the devices 300, 1300, 400, 500, 600, 700, 830, 900, which, in an attachable and removable design, can also be considered as functional modules via corresponding functional interfaces (see Fig. 2).

[0219] Furthermore, the surface cleaning device G2 can also have a bearing unit 1000, which is to be understood as optional. By means of the bearing unit 1000, the guide part 200 and the surface cleaning head 100 are movable relative to each other in the manner already explained, particularly with reference to Figures 7 to 16. The bearing unit 100 can also be considered a functional module.

[0220] The aforementioned devices are the tool device 300, 1300, the propulsion device 400, the liquid intake device 500, the particle intake device 600, the liquid discharge device 700, the control device 800 and the robotics device 900, which have already been explained in relation to Fig. 2.

[0221] Regarding the basic structure and components of the devices 300, 1300, 400, 500, 600, 700, 800, and 900, what has already been disclosed applies. Accordingly, the tooling device 300, 1300 comprises at least one tool 310, one drive motor 320, and one drive train 330. If the tooling device 300, 1300 is configured as an auxiliary tooling device 1300, it comprises at least one auxiliary tool 1310. An auxiliary drive motor 1320 and an auxiliary drive train 1330 may be optionally present. The propulsion device 400 comprises a propulsion element 410 and a propulsion motor 420. The fluid intake device 500 comprises a fluid intake 510, a fluid conveying device 520, and a fluid reservoir 530. The particle collection device 600 includes a particle collection unit 610, a particle conveying unit 620 and a particle container 630.The liquid dispensing device 700 comprises a liquid dispensing unit 710, a liquid conveying unit 720, and a liquid reservoir 730. In the present embodiment, the control device 800 can also be configured as an electrical functional unit 830 and comprises at least one electrical load 840 and an electrical power source 850.

[0222] The aforementioned components, parts and / or assemblies of the devices 300, 1300, 400, 500, 600, 700, 800, 900 can each be considered as the first functional unit F1 or second functional unit F2 and connected by means of at least one of the functional connections FV1 to FV nThey are connected to each other. In one embodiment of the surface cleaning device G2, the tool assembly 300, 1300 is present, wherein the at least one tool 310 or at least one additional tool 1310 is arranged on the surface cleaning head 100 in the form of the first functional unit F1. In this case, the drive motor 320 or additional drive motor 1320 can be arranged, in particular, on the guide part 200 in the form of the second functional unit F2. In this case, the drive train 330 or the additional drive train 1330 forms the separable drive train connection FV4.

[0223] Alternatively or additionally, the liquid intake 510 can be arranged on the surface cleaning head 100 in the form of a (further) first functional unit F1, with the liquid reservoir 530 being arranged on the guide part 200 and being considered a (further) second functional unit F2. In this case, the liquid intake 510 and the liquid reservoir 530 are separably connected to each other via the fluid connection FV1.

[0224] In further embodiments, the particle intake 610 and / or the liquid dispensing unit 710 form a (further) first functional unit F1. In this case, the particle container 630 and the liquid reservoir 730 of the liquid dispensing unit 700 can be provided as a (further) second functional unit F2. The particle intake 610 and the particle container 630 can, in this case, be connected to each other via a (further) fluid connection FV1. The same applies analogously to a connection between the liquid dispensing unit 710 and the liquid reservoir 730.

[0225] The electrical functional device 830 is configured to generate at least one function of the surface cleaning device G2 and / or to control at least one function of the surface cleaning device G2. The electrical load 840 is configured to generate the at least one function of the electrical functional device 830 by expending electrical energy, with the energy source 850 being configured to provide the electrical energy. The electrical load 840 and the electrical energy source 850 can each be configured as a (further) first functional unit F1 and / or a (further) second functional unit F2. In this case, the electrical functional connection FV2 serves to connect the electrical load 840 and the electrical energy source.

[0226] The functional interfaces 1111 and 1121 integrated into the connecting device 1100 allow for the particularly simple formation of a modular surface cleaning system, as already explained with reference to Figures 1 and 2. Figure 20 shows a further embodiment of a surface cleaning system S2.

[0227] The S2 surface cleaning system has several different surface cleaning heads 100, 100', 100" each having a first connecting unit 1110.

[0228] Furthermore, the S2 surface cleaning system has several different guide parts 200, 200', 200", each of which has a second connecting unit 1120.

[0229] The different surface cleaning heads 100, 100', 100" can be optionally connected to each of the different guide parts 200, 200', 200" by means of the identical first and second connecting units 1110, 1120 and vice versa.

[0230] In the embodiment shown in Fig. 20, the surface cleaning heads 100, 100', 100" differ, firstly, with regard to their respective first functional unit F1, FT, F1". Secondly, the surface cleaning heads 100, 100', 100" have different dimensions. It is understood that different surface cleaning heads with similar first functional units and only different geometric dimensions can also be provided, or vice versa.

[0231] It is also conceivable and possible to combine different functional units and different configurations of the same or different functions, whereby overlaps in configuration and / or function may also occur, for example, in the type or dimensions of tools and auxiliary tools or the tool width. It is understood that different surface cleaning heads with similar primary functional units and only differing geometric dimensions can also be provided, or vice versa. For example, it may be provided that a first surface cleaning head is equipped with two disc-shaped processing tools and a second, third, or further surface cleaning head (100, 100', 100", 100 n) is equipped with three, four or more disc tools. It is also conceivable to equip a first surface cleaning head with two main processing tools, e.g. disc tools or roller tools, and a second, third or further surface cleaning head (100, 100', 100", 100 n ) with additional tools alongside the main tools of the first surface cleaning head.

[0232] The same applies analogously to the different guide parts 200, 200', 200", which in this case also each have different second functional units F2, F2', F2". Furthermore, the guide parts 200, 200', 200" differ with regard to their geometric design. It is understood that different guide parts with similar second functional units and only different geometric dimensions may also be provided, or vice versa.

[0233] In further embodiments, surface cleaning heads, while functioning identically and preferably using the same or similar tools (e.g., two or more counter-rotating disc tools), nevertheless exhibit different tool widths. Particularly preferred in such a system are surface cleaning heads with two main tools (e.g., disc tools) and, especially preferably, detachable, removable, or switchable auxiliary tools, or with four or more identical or similar tools in a single surface cleaning head. This allows for the easy use of a large number of different and / or similar surface cleaning heads with one or more guide elements within the corresponding surface cleaning system. Various such surface cleaning heads, both identical and differently designed, are shown and described in the exemplary embodiments and figures.Using a surface cleaning system according to the invention, these surface cleaning heads are, for example, interchangeable and usable with one another. To avoid repetition, reference is made here to the aforementioned surface cleaning heads and their features and design, and it should be clarified that a surface cleaning system according to the invention preferably comprises a combination of these and, even more preferably, a selection of them, i.e., for example, a first surface cleaning head is designed according to Fig. 56 and at least one further surface cleaning head according to Fig. 58. Reference can be made accordingly and analogously to Fig. 71 and the description thereto.

[0234] In the embodiment shown, the guide part 200", which can also be referred to as the third guide part 200", is formed by the robotic device 900 (see Fig. 19) itself. In conjunction with one of the surface cleaning heads 100, 100', 100" the third guide part 200", i.e. the robotic device 900, forms an autonomous surface cleaning robot A, as shown, for example, in a specific embodiment in Fig. 75.

[0235] In one embodiment, the surface cleaning system has at least one first surface cleaning head and one second surface cleaning head, wherein the first surface cleaning head has (exactly) two disc tools and the second surface cleaning head has at least four disc tools, wherein the first surface cleaning head has a first tool width and the second surface cleaning head has a different second tool width and / or wherein the first surface cleaning head has a first weight and the second surface cleaning head has a different second weight.

[0236] In one embodiment, the surface cleaning system has at least one first surface cleaning head and one second surface cleaning head, wherein the first surface cleaning head and the second surface cleaning head have an identical number of disc tools, wherein the first surface cleaning head has a first tool width and the second surface cleaning head has a different second tool width and / or wherein the first surface cleaning head has a first weight and the second surface cleaning head has a different second weight.

[0237] In one embodiment, the at least two surface cleaning heads each have (exactly) two disc tools and can each also be referred to as a two-disc head, specifically as the first two-disc head and the second two-disc head.

[0238] In one embodiment, the at least two surface cleaning heads each have (exactly) four disc tools and can each also be referred to as a four-disc head, specifically as the first four-disc head and the second four-disc head.

[0239] In one embodiment, the first tool width is a maximum of 20 cm, preferably from 20 cm to 30 cm, more preferably from 30 cm to 40 cm, more preferably from 40 cm to 50 cm, more preferably from 50 cm to 60 cm, more preferably from 60 cm to 70 cm, more preferably from 70 cm to 80 cm.

[0240] In one embodiment, the second tool width is a maximum of 20 cm, preferably from 20 cm to 30 cm, more preferably from 30 cm to 40 cm, more preferably from 40 cm to 50 cm, more preferably from 50 cm to 60 cm, more preferably from 60 cm to 70 cm, more preferably from 70 cm to 80 cm.

[0241] In one embodiment, the difference between the first tool width and the second tool width is at least 5 cm, preferably from 5 cm to 10 cm, more preferably from 10 cm to 15 cm, more preferably from 15 cm to 20 cm, more preferably from 20 cm to 25 cm, more preferably from 25 cm to 30 cm, more preferably from 30 cm to 35 cm, more preferably from 35 cm to 40 cm, more preferably from 40 cm to 45 cm, more preferably from 45 cm to 50 cm, more preferably from 50 cm to 55 cm, and more preferably from 55 cm to 60 cm. In one embodiment, the surface cleaning system has a size classification for the first tool width and the second tool width, and / or the first tool width and the second tool width are assigned to a size metric, wherein the size classification and / or size metric includes the sizes "extra small", "small", "medium", "large", and / or "extra large".

[0242] In one embodiment, the first weight is at least 250 g, preferably at least 500 g, more preferably from 500 g to 750 g, more preferably from 750 g to 1000 g, more preferably from 1000 g to 1500 g, more preferably from 1500 g to 3000 g, more preferably from 3000 g to 4000 g, more preferably from 4000 g to 6000 g.

[0243] In one embodiment, the second weight is at least 250 g, preferably at least 500 g, more preferably from 500 g to 750 g, more preferably from 750 g to 1000 g, more preferably from 1000 g to 1500 g, more preferably from 1500 g to 3000 g, more preferably from 3000 g to 4000 g, more preferably from 4000 g to 6000 g.

[0244] In one embodiment, the difference between the first weight and the second weight is at least 250 g, preferably at least 500 g, more preferably at least 750 g, more preferably at least 1000 g, more preferably at least 1500 g, more preferably at least 2000 g, more preferably at least 2500 g, more preferably at least 4000 g.

[0245] In one embodiment, the surface cleaning system has a weight classification for the first weight and the second weight and / or the first weight and the second weight are assigned to a weight metric, wherein the weight classification and / or weight metric includes the weights "extra light", "light", "medium", "heavy" and / or "extra heavy".

[0246] Figure 21 shows another embodiment of a surface cleaning device G3 with a surface cleaning head 100, a guide arrangement 250, and an adapter device 1200. The guide arrangement 250 can be a guide part 200 or have a guide part 200. In this case, it is the latter.

[0247] The surface cleaning head 100 has at least one tool 310 which rests on the surface F to be cleaned during operation of the surface cleaning device G3. The tool 310 can be driven by a drive motor 320 to perform a tool movement in order to act on the surface F to be cleaned. In the embodiment shown, the drive motor 320 is associated with the guide arrangement 250.

[0248] The guide arrangement 250 is designed to guide the surface cleaning head 100 over the surface F to be cleaned, specifically for manual guidance by a user. For this purpose, the guide arrangement 250, in the illustrated embodiment, includes the guide element 200. The guide arrangement 250 is operatively connected to the surface cleaning head 100 by means of a mechanical joining connection MV, which can also be referred to as a mechanical functional connection. The drive motor 320 is operatively connected to the at least one tool 310 by means of a mechanical drive train connection AV and / or a drive train 330. The drive train connection AV connects the drive motor 320 to the tool 310 in a force- and / or motion-transmitting manner.

[0249] The adapter device 1200 is used to form the mechanical joining connection MV and the drive train connection AV. Both the mechanical joining connection MV and the drive train connection AV are designed to be detachable.

[0250] The adapter device 1200 enables a simple and quick exchange of the surface cleaning head 100 for another surface cleaning head, which may, for example, have a different configuration (see also Fig. 26). Since the drive motor 320 is located away from the surface cleaning head 100 and is associated with the guide assembly 250, the surface cleaning head 100 can be assembled simply and cost-effectively.

[0251] The surface cleaning head can be designed without its own drive system, such as a drive motor. Besides its cost-effective manufacturing, this also allows the surface cleaning head to be particularly flat and lightweight, especially in its outer areas, for example, with a height along the vertical axis Z of less than 10 cm, preferably less than 8 cm, and most preferably less than 5 cm. This makes it possible to use the surface cleaning head even in very tight and inaccessible spaces, such as under overhangs. At the same time, it simplifies and improves transport and handling for the user.

[0252] The adapter device 1200 has a first adapter unit 1210 and a second adapter unit

[0253] 1220. In the illustrated embodiment, the first adapter unit 1210 is assigned to the guide arrangement 250. The second adapter unit 1220 is assigned to the surface cleaning head 100.

[0254] The adapter device 1200 can be switched between a connected state (Fig. 21) and a disconnected state (Fig. 22). In the connected state, the first adapter unit 1210 and the second adapter unit 1120 are detachably fixed to one another by forming the mechanical joining connection MV and the drive train connection AV. In the disconnected state, the first adapter unit 1210 and the second adapter unit 1220 are separated from each other by breaking the mechanical joining connection MV and the drive train connection AV.

[0255] In the embodiment shown, the adapter device 1200, and thus also the mechanical joining connection MV and the drive train connection AV, can be connected and disconnected by a user without the aid of a tool, i.e., tool-free.

[0256] In the illustrated embodiment, the guide arrangement 250 extends longitudinally between a proximal end 251 and a distal end 252. The first adapter unit 1210 is located at the distal end 252 of the guide arrangement 250 and thus also at, or at least in the region of, the distal end 202 of the guide element. In this case, the first adapter unit 1210 forms the distal end 252 of the guide arrangement.

[0257] The guide element 200 extends longitudinally between its proximal end 201, which in this case coincides with the proximal end 251 of the guide arrangement 250, and its distal end 202. In the illustrated embodiment, the distal end 202 of the guide element 200 is connected to a support plate 253 of the guide arrangement 250. Depending on the specific embodiment, the connection between the guide element 200 and the support plate 253 can be rigid, movable, detachable, or permanent. The optional support plate 253 is not present in all embodiments and in this case serves as a support for the drive motor 320 and the first adapter unit 1210.

[0258] The second adapter unit 1220 is arranged on a top surface 101 of the surface cleaning head 100. The at least one tool 310 is arranged on a bottom surface 102 of the surface cleaning head 100, which is opposite the top surface 101 along the vertical axis Z.

[0259] Figure 22 shows the surface cleaning device G3 in a disconnected state of the adapter device 1200. Figure 22 also shows an enlarged schematic block diagram of the adapter device 1200 to illustrate further features. The mechanical joining connection MV that can be formed using the adapter device 1200 can, in principle, have any design suitable for the present purpose. For example, the mechanical joining connection MV can be designed as a screw connection, plug connection, clamp connection, snap-fit ​​connection, bayonet connection, and / or magnetic connection, each of which can be released. The mechanical joining connection MV preferably corresponds to the mechanical functional connection that can be formed using the connecting device 1100 and is explained in particular with reference to Figure 17.

[0260] To form the mechanical joining connection MV, the adapter device 1200 has a joining section 1211 and a complementary joining section 1221. The two joining sections 1211 and 1221 can also be referred to as the first joining section 1211 and the second joining section 1221. The first joining section 1211 is assigned to the first adapter unit 1210. The second joining section 1221 is assigned to the second adapter unit 1220. The two joining sections 1211 and 1221 are configured to form the detachable joining connection MV and are detachably connected to each other by positive locking and / or force locking in the connected state (Fig. 21). In the disconnected state (Fig. 22), the two joining sections 1211 and 1221 are separated from each other.Depending on the design, the two joining sections 1211, 1221 can each be, for example, a screw section, a plug section, a clamping section, a locking section, a bayonet section and / or a magnetic section.

[0261] To form the drive train connection AV, the adapter assembly comprises a drive section 1212 and a complementary drive section 1222. The two drive sections 1212 and 1222 can also be referred to as the first drive section 1212 and the second drive section 1222. The first adapter unit 1210 has the first drive section 1212, and the second adapter unit 1220 has the second drive section 1222. The first drive section 1212 is operatively connected, at least indirectly, to the drive motor 320 for force and motion transmission. The second drive section 1222 is connected, at least indirectly, to the at least one tool 310 for force and motion transmission. For motion transmission, both drive sections 1212 and 1222 are movably mounted. The first drive section 1212 is movably mounted relative to the first adapter unit 1210.The second drive section 1222 is movably mounted relative to the second adapter unit 1220. Depending on the drive movement of the drive motor 320 and the tool movement of the tool 310, different movements and thus different mountings of the drive sections 1212 and 1222 are possible. For example, translational, rotational, oscillating, and / or eccentric movement of the drive sections 1212 and 1222 is conceivable and possible. In the engaged state (Fig. 21), the first drive section 1212 and the second drive section 1222 are engaged with each other in a form-fit and / or force-fit manner, allowing for detachable connection. In this way, the drive train connection AV is formed. In the disconnected state (Fig. 22), the drive sections 1212 and 1222 are disengaged, and the drive train connection AV is disconnected.

[0262] Fig. 23 shows a schematic block representation of a specifically designed adapter device 1200.

[0263] In the embodiment according to Fig. 23, the drive motor 320 is configured to generate a rotary drive motion AM. The drive motion AM is applied to an output shaft 325, which can also be referred to as the driven shaft. In one embodiment, the output shaft 325 is an output-side motor shaft of the drive motor 320, i.e., directly associated with the drive motor 320. In another embodiment, the output shaft 325 is an output shaft of a motor gearbox connected downstream of the drive motor 320.

[0264] In the embodiment according to Fig. 23, the tool 310 is configured to perform a rotary tool movement WM. The rotary tool movement WM is applied to a drive shaft 315. In one embodiment, the drive shaft 315 is rigidly connected to the tool 310. In another embodiment, the drive shaft 315 is detachably connected to the tool 310. The tool 310 is a disc tool 311.

[0265] In the embodiment shown in Fig. 23, the first drive section 1212 is a rotatably mounted pin element 1214, which is at least indirectly and torque-resistant connected to the output shaft 325 of the drive motor 320. The second drive section 1222 is a rotatably mounted pin receptacle 1224, which is at least indirectly and torque-resistant connected to the drive shaft 315 of the tool 310. The pin element 1214 and the pin receptacle 1224 are axially engaged when the adapter assembly 1200 is connected. The pin element 1214 is positively engaged and torque-transmitting in the pin receptacle 1224. When the adapter assembly 1200 is disconnected, the pin element 1214 and the pin receptacle 1224 are axially disengaged. It is understood that a reverse assignment of pin element 1214 and pin receptacle 1224 to the first adapter unit 1210 and the second adapter unit 1220 may also be provided.The pin element 1214 and the pin receptacle 1224 are shown schematically in Fig. 23 in the form of a hexagon (external hexagon / internal hexagon). Of course, other shapes are also conceivable and possible.

[0266] In the embodiment shown in Fig. 23, the first joining section 1211 is a plug-in element 1213 and the second joining section 1221 is a plug-in receptacle 1223. When the adapter assembly 1200 is connected, the plug-in element 1213 and the plug-in receptacle 1223 are axially plugged together. In the plugged-in state, the plug-in element 1213 is releasably positively engaged in the plug-in receptacle 1223. When the adapter assembly 1200 is disconnected, the plug-in element 1213 and the plug-in receptacle 1223 are axially disengaged. The configuration of the plug-in element 1213 and the plug-in receptacle 1223 shown in Fig. 23 is to be understood as purely exemplary. Furthermore, a reverse arrangement of the plug-in element 1213 and the plug-in receptacle 1223 to the first adapter unit 1210 and the second adapter unit 1220 is also possible.

[0267] In the embodiment shown in Fig. 24, the surface cleaning device G3 has a propulsion device 400, a liquid intake device 500, a liquid discharge device 700, and / or an electrical operating device 830. The aforementioned devices 400, 500, 700, and 830 are to be understood as optional and can be present on the surface cleaning device G3 individually or in any combination. Furthermore, a particle intake device 600, a robotic device 900, and / or an additional tool device 1300 can alternatively or additionally be provided. The aforementioned devices 400, 500, 600, 700, 830, 900, and 1300 can, in turn, be configured individually, several of them, or all of them, as functional modules M1 to M7 and be considered as such (see Fig. 2).Furthermore, regarding the function and design as well as any individual components, parts and / or assemblies of the devices 400, 500, 600, 700, 830, 900, 1300, what has already been disclosed, in particular with reference to Figs. 2 and 19, applies.

[0268] Furthermore, the surface cleaning device G3, in the embodiment shown in Fig. 24, has a bearing device 1000, which is to be understood as optional. By means of the bearing device 1000, the guide arrangement 250 and the surface cleaning head 100 are movable relative to each other in the manner already explained, in particular with reference to Figs. 7 to 16.

[0269] In the embodiment shown in Fig. 24, the bearing assembly 1000, together with the guide arrangement 250, is removable from the surface cleaning head 100 when the adapter assembly 1200 is separated. The first adapter unit 1210 is positioned distally from the bearing assembly 1000 along a longitudinal axis L of the guide arrangement 250, which in this case also forms the longitudinal axis of the guide part 200. In other words, the first adapter unit 1210 lies below the bearing assembly 1000 along the longitudinal axis L.

[0270] Figure 25 shows a specific configuration of the surface cleaning device G3 with the liquid intake device 500 and the liquid dispensing device 700. An electrical power source 850 of the electrical functional device 830 (see Figure 24) is also present.

[0271] The liquid intake device 500 in turn has a liquid intake 510, a liquid delivery device 520 and a liquid container 530.

[0272] In one embodiment, the liquid intake 510 is mounted on the guide assembly 250, and in an alternative embodiment, it is mounted on the surface cleaning head 100. This is illustrated in Fig. 25 by the dashed connecting lines between the liquid intake 510 and the guide assembly 250 and the surface cleaning head 100. In the embodiment shown, the liquid conveying device 520 and the liquid container 530 are mounted on the guide assembly 250, specifically on the guide element 200.

[0273] The liquid receiving device 700 in turn has a liquid dispensing device 710, a liquid conveying device 720 and a liquid container 730.

[0274] In one embodiment, the liquid dispensing unit 710 is a component of the surface cleaning head 100. In another embodiment, the liquid dispensing unit 710 is a component of the guide assembly 250. In this respect, what has been said regarding the allocation / storage of the liquid intake 510 also applies, mutatis mutandis, to the liquid dispensing unit 710. In the embodiment shown, the liquid conveying device 720 and the liquid reservoir 730 of the liquid dispensing device 700 are mounted on the guide assembly 250, specifically on the guide part 200.

[0275] The electrical power source 850, which is specifically a rechargeable battery, is also assigned to the guide assembly 250. In this case, the electrical power source 850 is attached to the carrier plate 253. The electrical power source 850 is detachably attached to the carrier plate 253. It is also possible and conceivable to arrange the power source 850 on the guide element 200 or on the surface cleaning head 100, or to detach it completely from the surface cleaning device by means of a carrying or pulling device for the user, or to design it for carrying by the user, e.g., by carrying it in a conventional bag.

[0276] In this embodiment, the liquid intake 510 is designed as a suction bar 511 and is a component of the surface cleaning head. The suction bar 511 has at least one sealing lip 512, 513 that rests on the surface F to be cleaned. In the illustrated embodiment, a first sealing lip 512 and a second sealing lip 513 are provided, spaced apart from each other along the longitudinal axis X. A suction channel 514 is formed between the two sealing lips 512, 513. The liquid to be received is drawn through the suction channel 514 by means of the conveying device 520. The first sealing lip 512, which is located at the front with respect to the longitudinal axis X, can be provided with recesses through which the liquid to be received can enter the suction channel 514 when the surface cleaning head 100 moves forward along the longitudinal axis X.

[0277] Figure 26 shows a surface cleaning system S3 with a surface cleaning device G3 and at least one additional surface cleaning head 100', 100". Specifically, two additional surface cleaning heads 100', 100" are present. The total number of surface cleaning heads 100, 100', 100" can also be referred to as the first surface cleaning head 100, the second surface cleaning head 100', and the third surface cleaning head 100".

[0278] Each of the surface cleaning heads 100, 100', 100" is equipped with a second adapter unit 1220. Furthermore, the surface cleaning heads 100, 100', 100" are configured differently, for example with regard to the design of their respective tool 300, 310', 310", their dimensions, in particular a working and / or tool width, the presence or absence of a liquid dispensing 710, a liquid intake 510, a particle intake 610, a propulsion device 400, or the like.

[0279] Specifically, the tool 310 of the first surface cleaning head 100 is a disc tool 311, although two disc tools are of course also possible. The tool 310' of the second surface cleaning head 100' has two rotatable roller tools 316 (see also Fig. 29). The tool 310" of the third surface cleaning head 100" is at least one eccentric tool 317 (see also Fig. 30). In the embodiment shown, none of the surface cleaning heads 100, 100', 100" has a drive motor for driving the respective tool 310, 310', 310". Instead, the drive is provided by the drive motor 320 of the guide assembly 250. Since the drive motor 320 is a component of the guide assembly 250, the surface cleaning heads 100, 100', 100" can each be built without a separate drive motor, making them particularly simple and cost-effective.Due to the identical design of the surface cleaning heads 100, 100', 100" with regard to the second adapter unit 1220, these can optionally be connected to the guide arrangement 250 in order to form the respective mechanical joining connection MV and drive train connection AV (see Fig. 21).

[0280] In the embodiment shown, the surface cleaning system S3 also has a further guide arrangement 250'. This is configured differently from the guide arrangement 250. In this case, the further guide arrangement 250' is a robotic unit 900, which is equipped with a first adapter unit 1210 and a drive motor 320'. The robotic unit 900 can be selectively connected to each of the surface cleaning heads 100, 100', 100" by means of the first adapter unit 1210. In this case, the drive of the respective tool 310, 310', 310" is provided by a drive motor 320' of the robotic unit 900.

[0281] Fig. 27 shows another embodiment of a surface cleaning device G4 with a surface cleaning head 100 and a guide part 200.

[0282] The guide element 200 is optional and, in the illustrated embodiment, is designed for manually guiding the surface cleaning head 100 over the surface F to be cleaned. The guide element 200 can be detachably, permanently, rigidly, or movably connected to the surface cleaning head.

[0283] The surface cleaning head 100 comprises a support structure 110, a main tool assembly 300, and an auxiliary tool assembly 1300. The support structure extends along a longitudinal axis X, a transverse axis Y, and a vertical axis Z. The main tool assembly 300 is mounted on the support structure 110 and includes a main tool 310, which, during operation of the surface cleaning head 100, rests on the surface F to be cleaned along the vertical axis Z. The main tool 310 extends along the transverse axis Y over a main tool width B1. Furthermore, the main tool 310 can be driven relative to the support structure 110 by means of a drive unit 340 to act on the surface F to be cleaned.

[0284] In the illustrated embodiment, the drive unit 340 is arranged on the surface cleaning head 100, specifically mounted on the support structure 110. In other embodiments, the drive unit 340 can be arranged on the guide element 200 (or a guide arrangement 250, see, for example, Figures 21 to 23). An arrangement on the liquid intake is also conceivable, for example.

[0285] The drive unit 340 has a drive motor 320 which is connected to the main tool 310 by means of a drive train connection not shown in detail.

[0286] The additional tool device 1300 is assigned to the support structure 110 and has at least one additional tool 1310 which rests on the surface F to be cleaned along the vertical axis Z during operation of the surface cleaning head 100.

[0287] The auxiliary tool 1310 is arranged offset along the transverse axis Y relative to the main tool 310 and extends over an auxiliary tool width B1. This results in a total tool width B3 of the surface cleaning head 100.

[0288] Due to the overall tool width B3, which is increased by the additional tool width B2 compared to the main tool width B1, a larger area F of the surface to be cleaned can be cleaned per unit of time.

[0289] In preferred embodiments, the main tool width B1 is between 10 cm and 35 cm. The auxiliary tooling device 1300 preferably increases the main tool width B1 by 10% to 100%. In other words, the total tool width B3 is preferably between 110% and 200% of the main tool width B1. In a further preferred embodiment, the main tool width is between 35 cm and 70 cm.

[0290] In the illustrated embodiment, the auxiliary tool assembly 1300 is mounted on the support structure 110. The auxiliary tool assembly 1300 can be detachably or permanently attached to the support structure 110. This is illustrated in Fig. 1 by the dashed line. A fastening device 1600 can be provided for the detachable attachment of the auxiliary tool assembly 1300.

[0291] The at least one auxiliary tool 1310 can be stationary relative to the support structure 110 or movable by a drive mechanism to act on the surface F to be cleaned. In one embodiment, the auxiliary tool assembly has a separate drive unit. In another embodiment, the auxiliary tool 1310 is driven by the drive unit 340 and thus together with the main tool 310. The main tool 310 and the auxiliary tool 1310 can each be designed in different ways. Figures 28, 29, and 30 schematically illustrate different embodiments.

[0292] Fig. 28 schematically shows a disc tool 311, 1311 (main disc tool 311, additional disc tool 1311). The disc tool 311, 1311 is rotatable about a pivot axis D1 and rests on the surface to be cleaned with an end face oriented along the vertical axis Z. The pivot axis D1 is oriented along the vertical axis Z and is thus at least predominantly vertically aligned. In particular, the pivot axis D1 is exactly vertically aligned. Especially in embodiments with a feed VK, VR generated by the tool assembly 300, 1300, the pivot axis D1 can be inclined by a few degrees from the vertical (see also Fig. 5). Disc tools are often also referred to as disc tools. In principle, the disc tool 311, 1311 can have any circumferential contour, for example, circular, star-shaped, segmented, recessed, partially segmented, rectangular, square, and the like.It is preferred that all of these devices form a circular treatment area on the surface to be cleaned as a result of a rotational movement applied to the surface. The circular design shown in Fig. 28 is preferred.

[0293] Fig. 29 shows a design as a roller tool 316, 1316 (main roller tool 316, additional roller tool 1316). The roller tool 316, 1316 is rotatable about a rotary axis D3. The rotary axis D3 is arranged in a horizontal plane, for example, parallel to the transverse axis Y. During operation, the roller tool 316, 1316 rests with its cylindrical surface on the surface F to be cleaned along the vertical axis Z.

[0294] Figure 30 shows a configuration as an eccentric tool 317, 1317 (main eccentric tool 317, auxiliary eccentric tool 1317). Similar to the disc tool 311, 1311, the eccentric tool 317, 1317 rests with a lower end face along the vertical axis Z on the surface to be cleaned. In contrast to the disc tool 311, 1311, the eccentric tool 317, 1317 is designed to perform an eccentric movement. In the illustrated embodiment, this movement is oscillating, eccentric, or even rocking along a movement axis D4. The movement axis D4 is arranged in a horizontal plane, for example, parallel to the transverse axis Y or the longitudinal axis X.

[0295] Figures 31 to 35 show different exemplary configurations of surface cleaning heads with auxiliary tool units. In the configuration according to Figure 31, the auxiliary tool unit 1300 is not removable and is mounted on the support structure 110. In other words, the auxiliary tool unit 1300 is an integral part of the surface cleaning head 100. The auxiliary tool unit 1300 has an auxiliary drive motor 1320, which is configured to drive the tool movement of the auxiliary tool 1310. In this configuration, the main tool unit 300 and the auxiliary tool unit 1300 therefore have separate drives, specifically drive motors 320 and 1320.

[0296] In the embodiment shown in Fig. 32, the surface cleaning head 100 has a transmission device 1400, which is configured to transmit the tool movement of the main tool 310 to the auxiliary tool 1310. In other words, the auxiliary tool 1310 is driven or pulled indirectly via the main tool 310. The transmission device 1400 can function as a type of gearbox, by means of which the movement of the main tool 310 is transmitted, translated, and / or transformed. The translation can be to slow down or speed up. Transformation means, for example, that a rotary movement of the main tool 310 can be transformed into a translational and / or eccentric movement of the auxiliary tool 1310. Of course, other types of transformation are also conceivable and possible. In principle, the transmission device 1400 can have any design suitable for the present purpose.

[0297] In the embodiment shown in Fig. 33, the transmission device 1400 has a drive contour 1410 arranged on the main tool 310 and a drive contour 1420 arranged on the auxiliary tool 1310. The drive contour 1410 and the drive contour 1420 are engaged with each other, at least indirectly, to transmit the movement of the main tool 310 to the auxiliary tool 1310. Such engagement, even indirect engagement, can be force-fit and / or form-fit, and in particular also friction-fit. The drive contour 1410 is connected to the main tool 310 in a force- and motion-transmitting manner. In the embodiment shown, the drive contour 1410 is formed on the main tool 310. The drive contour 1420 is connected to the auxiliary tool 1310 in a force- and motion-transmitting manner. In this case, the drive contour is formed directly on the additional tool 1310.

[0298] In the embodiments shown in Figures 33 to 35, the transmission device 1400 is a gear drive 1430. In this case, the drive contour 1410 is a drive tooth 1440 and the drive contour 1420 is an output tooth 1450. The drive tooth 1440 and the output tooth 1450 are in at least indirect mesh. In one embodiment, the drive tooth 1440 is directly meshed with the output tooth 1450. In another embodiment, the meshing occurs indirectly via an intermediate gear that is meshed with both the drive tooth 1440 and the output tooth 1450.

[0299] In the embodiment shown in Fig. 34, the auxiliary tool assembly 1300 is detachably attached to the surface cleaning head 100, specifically, it is releasably fastened to the support structure 110. The aforementioned fastening device 1600 is provided for this purpose. The fastening device 1600 has a fastening section 1610 and a complementary fastening section 1620. The fastening sections 1610 and 1620 can also be referred to as the first fastening section 1610 and the second fastening section 1620. The first fastening section 1610 is permanently connected to the support structure 110, specifically formed on the support structure 110. The second fastening section 1620 is permanently connected to the auxiliary tool assembly 1300, specifically formed on it. The fastening device 1600, and thus also the two fastening sections 1610 and 1620, can in principle have any design suitable for the present purpose.For example, the fastening sections 1610, 1620 can be configured to form a detachable plug, clamp, snap, bayonet and / or magnetic connection.

[0300] In the embodiment according to Fig. 34, the auxiliary tool device 1300 has an additional support structure 1340 on which the at least one auxiliary tool 1310 is movably mounted. The second fastening section 1620 is formed on the additional support structure 1340.

[0301] The fastening device 1600 allows the user to manually, preferably without tools, remove the auxiliary tool device 1300. The fastening device 1600 can be manually switched between a fastening state, as shown in particular in Fig. 34, and a separation state. In the separation state, the fastening between the two fastening sections 1610, 1620 is released, and the auxiliary tool device 1300 can be removed from the surface cleaning head 100.

[0302] In the embodiment shown in Fig. 35, the auxiliary tool assembly 1300 is multi-part, specifically two-part, and comprises a first auxiliary tool unit 1301 and a second auxiliary tool unit 1302. Each auxiliary tool unit 1301, 1302 includes an auxiliary tool, namely a first auxiliary tool 1303 and a second auxiliary tool 1304. The two auxiliary tool units 1301, 1302 are arranged along the transverse axis Y on opposite outer sides of the support structure 110 on both sides of the main tool 310. The multi-part, specifically two-part, design of the auxiliary tool assembly 1300 allows for a widening of the tool width on both sides.

[0303] However, it is also conceivable that in one embodiment the additional tooling device is designed as a single unit and, for example, has two additional tooling units that are connected to each other and can each be arranged on both sides of the outer sides of the support structure by attaching the additional tooling device to the support structure or coupling it to it.

[0304] The two additional tool units 1301 and 1302 are fundamentally identical in function and design and are mirror-symmetrical with respect to a vertical central longitudinal plane of the surface cleaning head 100. Both additional tool units 1301 and 1302 are detachably attached to the support structure 110 by means of a fastening device 1600 and can therefore be removed or attached as required.

[0305] The two auxiliary tools 1303 and 1304 are each driven by the main tool 310. For this purpose, both auxiliary tools 1303 and 1304 each have a drive contour 1420, which is specifically designed as an output tooth 1450.

[0306] Figures 36 to 42 show different exemplary configurations of main and auxiliary tools. The configurations differ in particular with regard to the relative arrangement of the tools, the drive direction of the tools, and / or the type of tools, for example, disc, roller, vibratory, and / or eccentric tools. The auxiliary tool assemblies 1300 of the embodiments shown in Figures 36 to 42 can each be detachable or integrated. Furthermore, at least one auxiliary drive motor can be present in each configuration, or the drive can be provided via the respective main tool assembly 300, for example, by means of a transmission device. It is also understood that the tool assemblies 300, 1300 can each be configured to generate a thrust force VK along a thrust direction VR. In this regard, reference is made to the disclosure relating to Figures 36 to 42.Reference is made to sections 4 and 5 and the principles for generating the thrust explained therein.

[0307] In the configuration shown in Fig. 36, the main tool assembly 300 comprises a first disc main tool 311 and a second disc main tool 312. The two disc main tools 311, 312 are arranged side by side along the transverse axis Y and rotate in opposite directions about a vertically oriented axis of rotation (see Fig. 28). The auxiliary tool assembly 1300 also comprises two disc tools, namely a first disc auxiliary tool 1311 and a second disc auxiliary tool 1312. The two disc auxiliary tools 1311, 1312 are each laterally offset from the disc main tools 311, 312 to achieve a wider overall tool width. The two disc auxiliary tools 1311, 1312 are each driven to rotate in opposite directions about an axis of rotation (see Fig. 28). The respective axis of rotation is vertically oriented and can be inclined to generate a feed. The one in Fig.The directions of rotation shown in Figure 36 are to be understood as examples. Opposite directions of rotation are also conceivable and possible. Furthermore, the main disc tools 311, 312 and the auxiliary disc tools 1311, 1312 can be driven in opposite directions, i.e., the first two disc tools 311, 1311 can have the same direction of rotation, as can the second two disc tools 312, 1312. In the embodiment according to Figure 36, the main disc tools 311, 312 and the auxiliary disc tools 1311, 1312, specifically their respective axes of rotation, are arranged on a common reference axis and / or in a common YZ reference plane, which is shown with dashed lines. In other words, the axes of rotation are arranged at the same height with respect to the longitudinal axis X.

[0308] The embodiments shown in Figs. 37 and 38 are each a variant of the embodiment shown in Fig. 36. These two variants differ from the embodiment shown in Fig. 36 in the arrangement of the additional disc tools in relation to the main disc tools.

[0309] In the embodiment according to Fig. 37, the disc attachment tools 1311', 1312' are arranged offset forward along the longitudinal axis X.

[0310] In the embodiment according to Fig. 38, the two additional disc tools 1311", 1312" are arranged offset to the rear along the longitudinal axis.

[0311] The embodiment according to Fig. 39 is a combination of the embodiments according to Figs. 37 and 38. This has a total of four additional disc tools 1311', 1311", 1312', 1312" which are arranged in pairs offset forwards and backwards along the longitudinal axis X.

[0312] In the configuration shown in Fig. 40, the additional disc tools 1311, 1312 are driven by the main disc tools 311, 312. The drive is provided indirectly via an intermediate gear 1460 of the respective transmission device (see Fig. 35). The intermediate gears 1460 allow the first main disc tool 311 and the first additional disc tool 1311 to rotate in the same direction, as do the second main disc tool 312 and the second additional disc tool 1312.

[0313] In the embodiment according to Fig. 41, the main tool assembly 300 has a roller tool 316. At axially opposite end faces of the roller tool 316, the auxiliary tool assembly 1300 has a disc auxiliary tool 1311, 1312.

[0314] In the embodiment according to Fig. 42, the main tool assembly 300 again comprises a first disc main tool 311 and a second disc main tool 312. The auxiliary tool assembly 1300 comprises two eccentric auxiliary tools 1317, namely a first eccentric auxiliary tool 1318 and a second eccentric auxiliary tool 1319. These are arranged along the transverse axis Y on both sides of the disc main tools 311, 312.

[0315] It is understood that the shapes and dimensions of the main and auxiliary tools shown in Figures 36 to 42 are purely exemplary. This applies in particular to the size ratios between the main and auxiliary tools.

[0316] Fig. 43 shows a specific embodiment of the surface cleaning device G4 with a propulsion unit 400, a liquid intake unit 500, a liquid discharge unit 700, and an electrical operating unit 830. The units 400, 500, 700, and 830 are optional and can be present individually or in various combinations. Furthermore, a particle intake unit 600 and / or a robotic unit 900 can be provided alternatively or additionally. For the respective function and construction of the aforementioned units 400, 500, 600, 700, 830, and 900, reference is made to the previously disclosed information, in particular with reference to Figs. 2 and 19. In addition, the surface cleaning device G4, in the embodiment shown in Fig. 43, has a storage unit 1000 (see Figs. 7 to 16).

[0317] Fig. 44 shows a specific embodiment with a liquid receiving device 500 and a liquid dispensing device 700.

[0318] The liquid receiving device 500 comprises a liquid conveying device 520 for conveying the liquid to be received and a liquid container 530 in which the received liquid is stored. The liquid dispensing device 700 comprises a liquid dispensing outlet 710 for dispensing liquid onto the surface to be cleaned, a liquid conveying device 720 for conveying the liquid to be dispensed, and a liquid container 730 in which the liquid to be dispensed is stored. The liquid containers 530 and 730 can optionally be connected to each other via the return line or bypass shown in the dashed line. To avoid repetition, reference is made to what has already been disclosed, in particular with reference to Fig. 3.

[0319] In the embodiment shown in Fig. 44, a first disc main tool 311 and a second disc main tool 312, as well as two disc auxiliary tools 1311, 1312, are again provided. The configuration of the main and auxiliary tools corresponds to the embodiment according to Fig. 36, although any other configuration shown in Figs. 37 to 42 or even further configurations are also possible.

[0320] In the embodiment shown in Fig. 44, the liquid intake device 500 has a main liquid intake 510 and an additional liquid intake 1510.

[0321] In one embodiment, the additional liquid intake is designed as a liquid conveying element. In this case, the additional liquid intake does not absorb liquid itself, but rather conveys liquid to the liquid intake device, specifically the main liquid intake.

[0322] The main fluid intake 510 is arranged along the longitudinal axis X behind the main tool assembly 300, and thus, in this case, behind the two disc main tools 311, 312. The main fluid intake 510 extends along the transverse axis Y across the main tool width B1.

[0323] In the illustrated embodiment, the additional fluid intake 1510 is designed in two parts, in accordance with the additional tool assembly 1300. Consequently, an additional fluid intake 1510 is arranged behind each of the disc-type additional tools 1311, 1312 and / or each of the additional tool units 1301, 1302. Each of the additional fluid intakes 1510 extends across the tool width of the respective disc-type additional tool 1311, 1312. In one embodiment, the additional fluid intakes 1510 are removable together with the respective additional tool assembly. In other embodiments, the additional fluid intakes 1510 are integrated into the surface cleaning head together with the respective additional tool assembly (not removable). The main fluid intake 510 is designed as a suction bar 511 and has at least one sealing lip 512, 513.The device consists of a first sealing lip 512 and a second sealing lip 513, each resting on the surface F to be cleaned and spaced apart from each other along the longitudinal axis X. A suction channel 514 is formed between the two sealing lips 512, 513, through which the liquid to be collected is conveyed into the liquid container 530 by means of the liquid conveying device 520.

[0324] The additional fluid intakes 1510 each have at least one additional sealing lip 1512. The additional sealing lips 1512 each rest on the surface F to be cleaned and border directly on the end faces of the main fluid intake 510 along the transverse axis Y. In one embodiment, the additional sealing lips 1512 project into the suction channel 514 at their end faces. Alternatively, an overlap with the first sealing lip 512 is conceivable and possible, with the additional sealing lips 1512 being arranged in front of the sealing lip 512 along the longitudinal axis X. The additional sealing lips 1512 each function as a fluid guide element.

[0325] Fig. 45 shows another embodiment of a surface cleaning device G5 with a surface cleaning head 100 and a guide part 200.

[0326] The guide element 200 is optional and is designed to guide the surface cleaning head 100 over the surface F to be cleaned. The guide element 200 can be permanently, detachably, rigidly, or flexibly connected to the surface cleaning head 100.

[0327] The surface cleaning head 100 has a support structure 110, a tool assembly 300, and a gear assembly 1700. The support structure 110 extends along a vertical axis Z, a transverse axis Y, and a longitudinal axis X.

[0328] The tool assembly 300 comprises at least one disc tool 311, which, during operation of the surface cleaning device G5, rests on the surface F to be cleaned along the vertical axis Z. The disc tool 311 is configured to perform a rotary tool movement WM. For this purpose, the disc tool 311 is mounted on the support structure 110 so as to be rotatable about a rotary axis D1. The rotary axis D1 is oriented along the vertical axis Z. In one embodiment, the rotary axis D1 is parallel to the vertical axis Z. In another embodiment, the rotary axis D1 is inclined by a few degrees from a precisely vertical orientation, for example, to generate a feed VK, VR (see also Fig. 5). The gear assembly 1700 is configured to transmit a drive movement from a drive motor 320 to the disc tool 311.

[0329] In the embodiment shown, the drive motor 320 is assigned to the surface cleaning head 100 and attached to the support structure 110. In a further embodiment, the drive motor 320 is assigned to the guide part 200 and / or a guide arrangement 250 (see in particular Fig. 21).

[0330] The transmission device 1700 has a drive wheel 1710 and an output wheel 1720.

[0331] The drive wheel 1710 is at least indirectly operatively connected to the drive motor 320 and can thus be driven by the drive motor 320. In one embodiment, the drive wheel 1710 is a section of a motor shaft of the drive motor 320. The output wheel 1720 is at least indirectly operatively connected to the drive wheel 1710 and can thus be driven via the drive wheel 1710. The output wheel 1720 is formed by a section 3111 of the disc tool 311. The output wheel 1720 is therefore rotatable about the axis of rotation D1 of the disc tool 311 together with the other sections of the disc tool 311.

[0332] The drive wheel 1710 is rotatable about a pivot axis (without reference numeral) which, in the illustrated embodiment, is parallel to the pivot axis D1 of the disc tool 311. In one configuration, the drive wheel 1710 is directly connected to an output shaft of the drive motor. In the illustrated embodiment, a motor gearbox 321 is connected downstream of the drive motor 320. The motor gearbox 321 is shown schematically in a highly simplified form in Fig. 45 and is optional. The motor gearbox 321 serves to reduce the output speed of the drive motor 320. Of course, a speed reduction is also conceivable.

[0333] In the embodiment shown, the disc tool 311, and thus the output gear 1720, is mounted on the support structure 110 in a way that allows for tool-free detachment. For example, a plug-in, snap-fit, clamping, bayonet, and / or magnetic connection can be provided for detachable mounting.

[0334] In the illustrated embodiment, the support structure 110 has a first bearing seat 111 and a second bearing seat 112. The first bearing seat 111 serves for the rotatable mounting of the disc tool 311. The second bearing seat 112 serves for the rotatable mounting of the drive wheel 1710. The bearing seats 111 and 112 are shown schematically in a highly simplified manner in Fig. 45 and can, for example, be designed as rolling, sliding, or other rotary bearings. In particular, the second bearing seat 112 is optional. As an alternative to the second bearing seat 112, a cantilevered mounting of the drive wheel 1710 is possible.

[0335] The transmission device 1700 can, in principle, have any design suitable for the present purpose. For example, the transmission device 1700 can be designed as a belt drive R or as a gear drive Z. A design as a friction wheel drive or traction drive is also possible.

[0336] In the illustrated embodiment, the transmission device 1700 is a gear transmission Z. The drive gear 1710 is a first gear 1730 and the output gear 1720 is a second gear 1740. In one embodiment, the first gear 1730 and the second gear 1740 are directly meshed with each other. In other embodiments, at least one intermediate gear is provided that meshes with both the first and the second gears.

[0337] The first gear 1730 and the second gear 1740 can, in principle, have any gear geometry suitable for the present purpose, in particular spur gearing, helical gearing, and / or herringbone gearing. With appropriate alignment of the axes of rotation of the drive and driven gears, worm gearing is also conceivable and possible. For illustrative reasons, the gear geometry is not shown in detail in the accompanying figures.

[0338] Fig. 46 shows a schematic top view of the gear assembly 1700. The second gear 1740 is a spur gear 1750, which forms an outer circumferential section 3112 of the disc tool 311. In the embodiment shown in Fig. 46, the first gear 1730 is directly meshed with the spur gear 1750.

[0339] Fig. 47 shows an alternative embodiment of the gear assembly 1700, in which the second gear 1740 is designed as a ring gear 1760. The ring gear 1760 forms an inner circumferential section 3113 of the disc tool 311. In this embodiment as well, the first gear 1730 is directly meshed with the second gear 1740.

[0340] The disc tool 311 can be designed as a single or multi-part component. In one embodiment, the section 3111 forming the output gear 1720 is an integral part of the disc tool 311 and is permanently connected to the other sections of the disc tool 311. In other embodiments, the section 3111, and thus the output gear 1720, is fixedly connected, in particular torque-resistant, but detachably connected to the other sections of the disc tool 311 if required.

[0341] Figures 48 and 49 show exemplary embodiments of the disc tool 311. In both embodiments, the disc tool 311 has a machining attachment 3114 and an attachment carrier 3115. The section 3111 forming the output gear 1720 is arranged on the attachment carrier 3115 in both embodiments. The section 3111 can be permanently, and in particular integrally, connected to the attachment carrier 3115. Alternatively, a fixed, and in particular torque-resistant, but if necessary detachable connection between the section 3111 and the attachment carrier 3115 can be provided.

[0342] The processing attachment 3114 is attached to the attachment carrier 3115. The attachment can be detachable, for example by means of hook and loop fasteners, snap fasteners, magnets, clamps, and the like. The processing attachment 3114 is used to actually act on the surface F to be cleaned and is in direct contact with the surface F during operation. The processing attachment 3114 has an abrasive effect, for example for scrubbing, grinding, and / or polishing the surface.

[0343] In the embodiment shown in Fig. 48, the processing attachment 3114 has a textile structure 3116, which can be designed, for example, as a scouring, grinding, and / or polishing pad. In an alternative embodiment, the processing attachment 3114 is made of a non-textile material.

[0344] In the embodiment according to Fig. 49, the processing attachment 3114 has a bristle material 3117, which can be designed, for example, as a scouring, grinding and / or polishing brush.

[0345] In Figs. 46, 47 and 50 to 52, the outer contour of the respective machining attachment 3114 is shown in dashed lines.

[0346] Figures 50, 51, and 52 show different exemplary configurations with several disc tools and differently designed transmission of the drive movement to and between the disc tools.

[0347] In the embodiment shown in Fig. 50, a first disc tool 311 and a second disc tool 312 are provided. The drive motor 320 drives the first disc tool 311. For this purpose, the drive motor 320 is operatively connected to the first disc tool 311 via a drive train 330, which is shown schematically in a highly simplified form. The gear unit 1700 is formed between the first disc tool 311 and the second disc tool 312 and can also be considered a transmission device 1400 (see in particular Figs. 27 to 44). The first disc tool 311 has the drive gear 1710 and the second disc tool 312 has the driven gear 1720. In the embodiment shown in Fig. 50, the two disc tools 311 and 312 rotate in opposite directions.

[0348] In the configuration shown in Fig. 51, the second disc tool 312 is driven indirectly via the drive wheel 1710, which is operatively connected to the drive motor 320. The second disc tool 312, in turn, drives the first disc tool 311. In this context, the second disc tool 312, more precisely its section 3111, functions as the (first) output wheel 1720, and the first disc tool 311, more precisely its section 3111, functions as the second output wheel 1721.

[0349] In the embodiment according to Fig. 52, in addition to the two disc tools 311, 312, which can be considered the main tools in this context, an auxiliary tool assembly with a first additional disc tool 1311 and a second additional disc tool 1312 is provided. The configuration of the tools shown in Fig. 52 corresponds in principle to the configuration shown in Fig. 37, with the addition of intermediate gears 1460, specifically intermediate gears 1770, according to the embodiment according to Fig. 40.

[0350] In the embodiment shown in Fig. 52, the first disc tool 311 is indirectly driven via the drive motor 320. For this purpose, the drive wheel 1710, which is operatively connected to the drive motor 320, acts on the output wheel 1720 of the first disc tool 311. The output wheel 1720 of the first disc tool 311 is engaged, on the one hand, with the second output wheel 1721 of the second disc tool 312, and on the other hand, via one of the intermediate gears 1460, which in this case are each designed as an intermediate gear 1770, with the first additional disc tool 1311, more precisely: with its further output wheel 1722. The further output wheel 1722 can also be referred to as the third output wheel. The second output gear 1721 engages with the second disc attachment tool 1312 via another of the intermediate gears 1460, 1770, more precisely: with its further output gear 1723. The further output gear 1723 can also be referred to as the third output gear.

[0351] Figure 53 shows an exemplary embodiment of the surface cleaning device G5.

[0352] In the embodiment shown in Fig. 53, the surface cleaning device G5 has a liquid intake device 500 with a liquid intake 510, a liquid delivery device 520, and a liquid reservoir 530. It also has a liquid dispensing device 700 with a liquid dispensing outlet 710, a liquid delivery device 720, and a liquid reservoir 730. The guide element 200 extends longitudinally between a proximal end 201 and a distal end 202 and is movably connected to the surface cleaning head 100 via a bearing device 1000.

[0353] Regarding the function and design of the optional liquid intake device 500, liquid dispensing device 700 and storage device 1000, reference is made to what has already been disclosed.

[0354] It is understood that the surface cleaning device G5 may alternatively or additionally be equipped with further functional devices / modules, in particular a propulsion device 400, a particle collection device 600, a control device 800 and / or a robotic device 900.

[0355] In the embodiment according to Fig. 53, the drive motor 320 is arranged on a top surface 113 of the support structure 110. If the support structure 110 is designed as a housing or housing assembly with an open or closed receiving space, the drive motor can alternatively, preferably completely, be arranged in said receiving space.

[0356] The drive motor 320 has an output shaft 325 on which the drive wheel 1710 is mounted in a torque-resistant manner. The output shaft 325 extends to a lower surface 114 of the support structure 110. The lower surface 114 is opposite the upper surface 113 along the vertical axis Z.

[0357] In the embodiment according to Fig. 53, the gear unit 1700 is arranged on the underside 114 of the support structure 110. In other words: The gear unit 1700 is exposed.

[0358] The first bearing seat 111 and the second bearing seat 112 are arranged between the top 113 and the bottom 114 of the support structure 110. The gear unit 1700 is located below the two bearing seats 111 and 112 with respect to the vertical axis Z.

[0359] Figures 54 to 62 show another embodiment of a surface cleaning device G6.

[0360] The surface cleaning device G6 comprises a surface cleaning head 100, a guide part 200, a tool assembly 300, a liquid intake device 500, a liquid dispensing device 700, a control device 800, a storage device 1000, a connecting device 1100, an additional tool assembly 1300, and a transmission device 1400. The transmission device 1400 can also be considered a gearbox 1700 (see Figs. 45 to 53).

[0361] Regarding the basic function and structure of the aforementioned components / devices 100, 200, 300, 500, 700, 800, 1000, 1100, 1300, 1400, 1700 of the surface cleaning device G6, reference is also made to what has already been disclosed.

[0362] The surface cleaning head 100 has a support structure 110 and extends along a longitudinal axis X, a transverse axis Y, and a vertical axis Z. In the illustrated embodiment, the support structure 110 is designed as a housing or housing assembly to which and / or in which further components of the surface cleaning device G6 are arranged and attached.

[0363] The guide element 200 extends longitudinally between a proximal end 201 and a distal end 202 and is designed for manually guiding the surface cleaning head 100 over the surface F to be cleaned. In the illustrated embodiment, the proximal end 201 has handles (without reference numerals) and optionally further operating elements for use by a user. Due to the longitudinal design of the guide element 200, the user can guide the surface cleaning head 100 over the surface F while maintaining an upright posture.

[0364] The surface cleaning head 100 and the guide part 200 are movably connected to each other by means of the bearing assembly 1000. The bearing assembly 1000 is located in the region of the distal end 202 of the guide part 200. The bearing assembly 1000, in turn, forms a gimbal connection K. The bearing assembly 1000, and in particular the gimbal connection K, allows for particularly simple and intuitive maneuverability of the surface cleaning head 100. Reference is also made to what has already been disclosed, especially with reference to Figures 7 to 16.

[0365] In the embodiment shown, the bearing assembly 1000 has two pivot axes T1 and T2 (see Fig. 61). The first pivot axis T1 is oriented parallel to the transverse axis Y. The second pivot axis T2 is oriented orthogonally to the first pivot axis T1 along the longitudinal axis X. The guide element 200 is pivotable relative to the surface cleaning head 100 about both the first pivot axis T1 and the second pivot axis T2. Starting from the configuration shown in Figs. 54 and 55, the guide element 200 can be pivoted forward and backward about the first pivot axis T1 along the longitudinal axis X. Simultaneously, lateral pivoting to the left and right about the second pivot axis T2 is possible. In this way, the two pivot axes T1 and T2 form the aforementioned gimbal connection K.

[0366] The tool assembly 300 comprises a first disc tool 311 and a second disc tool 312. The two disc tools 311 and 312 are each driven by a drive motor 320 to rotate about their respective axes of rotation. In the illustrated embodiment, the two drive motors 320 are housed in the casing-like support structure 110.

[0367] The tool assembly 300 of the surface cleaning device G6 is configured to generate a propulsive force VK along a propulsion direction VR. The propulsion direction VR is oriented parallel to the longitudinal axis X and points forward. To generate the propulsion VK, VR, the two disc tools 311, 312, as shown in Fig. 4, are subjected to a local axial force P to generate unequal rotational friction. Alternatively or additionally, the axes of rotation of the disc tools 311, 312 can be slightly inclined towards each other (see Fig. 5). The propulsion VK, VR generated by the tool assembly 300, in combination with the cardan joint K, allows for particularly simple, intuitive, and efficient maneuverability of the surface cleaning head 1000 (cf. Figs. 9 to 16).

[0368] The surface cleaning head 100 and the guide part 200 are attached to each other by means of the connecting device 1100 in a way that allows for tool-free separation. The connecting device 1100 is shown in detail in Fig. 62. The first connecting unit 1110 is associated with the surface cleaning head 100, and the second connecting unit 1120 is associated with the guide part 200. The first connecting unit 1110 is located in the area of ​​the bearing device 1000. In the embodiment shown, the bearing device 1000 can be separated from the guide part 200 together with the surface cleaning head 100 by releasing the connecting device 1100. The second connecting unit 1120 is located at the distal end 202 of the guide part 200.

[0369] The connecting device 1100 creates a mechanical connection MV (or joining connection) between the guide part 200 and the surface cleaning head 100. In this case, the mechanical joining connection MV is a plug-in and / or snap-fit ​​connection. The two connecting units 1110, 1120 can be plugged together along the longitudinal axis L of the guide part 200 and, if necessary, detachably snapped into place, and then disconnected from each other in the opposite direction. The connecting device 1100 also allows for the creation of several functional connections FV between the guide part 200 and the surface cleaning head 100. In the illustrated embodiment, the functional connections FV consist of a fluid connection and several electrical connections, which are automatically formed / connected when the connecting units 1110, 1120 are plugged together. The same applies in reverse when the connecting units 1110, 1120 are disconnected.

[0370] In the embodiment shown, the two connection units 1110, 1120 each have two complementary fluid connectors and several pairs of electrical contacts, whereby in Fig. 62, for the sake of clarity, only the fluid connector 1112 and a total of three electrical contacts 1113, 1113', 1113" of the first connection unit 1110 are shown. The second connection unit 1120 has one complementary fluid connector and three complementary electrical contacts.

[0371] The fluid connection via the two fluid connectors serves, in this case, to deliver the liquid onto the surface to be cleaned. This aspect will be explained in more detail below with reference to the liquid delivery device 700 of the surface cleaning unit G6. The electrical functional connections via the electrical contacts serve, in particular, to control the drive motors 320 and to supply power to electrical consumers that are assigned to the guide section 200 and are supplied with energy via the electrical energy storage device 850 of the surface cleaning head 100, which will be explained in more detail below.

[0372] In the illustrated embodiment, the surface cleaning device G6 does not have a separate propulsion unit 400. Instead, the propulsion is generated by means of the tool assembly 300. However, it is also conceivable and possible that a propulsion unit 400 in the form of a corresponding functional module (see in particular Figs. 1, 2) is connected to the surface cleaning head 100 and / or the guide element 200 via a suitable module interface.

[0373] The liquid intake device 500 of the surface cleaning device G6 in turn has a liquid intake 510, a liquid delivery device 520 and a liquid container 530. The liquid container 530 can also be referred to as a dirty water tank.

[0374] The fluid intake 510 is designed as a suction strip 511. The suction strip 511 is attached to the support structure 110 and is arranged along the longitudinal axis X – and thus with respect to the direction of advance VR – behind the tool assembly 300, specifically behind the disc tools 311 and 312. In this embodiment, the suction strip 511 also has a first sealing lip 512, a second sealing lip 513, and a suction channel 514 formed between the sealing lips 512 and 513. The suction strip 511 is curved along the transverse axis Y. In this embodiment, the suction strip 511 extends over the entire width of both disc tools 311 and 312.

[0375] The suction channel 514 is fluidly connected to the liquid reservoir 530 via a liquid line 540 (see Fig. 55). In this case, the liquid line 540 is designed as a hose or pipe in sections. Further sections of the liquid line 540 can, for example, extend through a cross-section of the guide element 200 or other cross-sections of the surface cleaning device G6. The liquid line 540 opens into the suction channel 514 at one end and into the liquid reservoir 530 at the other.

[0376] The fluid reservoir 530 is detachably attached to the guide part 200 and is elongated in shape. The fluid reservoir 530 extends lengthwise between the proximal end 201 and the distal end 202 of the guide part 200.

[0377] In the illustrated embodiment, the liquid conveying device 520 is arranged in a housing 203. The housing 203 forms the distal end 202 of the guide part 200. The liquid conveying device 520 is fluidly connected to the liquid reservoir 530 and is configured to generate a vacuum in the liquid reservoir 530. As a result of the vacuum, the liquid to be received is drawn between the sealing lips 512, 513 from the suction channel 514 into the liquid line 540 and from there into the liquid reservoir 530.

[0378] The liquid dispensing device 700 of the surface cleaning device G6 comprises a liquid dispensing unit 710, a liquid conveying unit 720, and a liquid reservoir 730. The liquid reservoir 730 can also be referred to as a fresh water tank. The liquid dispensing unit 710 is not shown in detail in Figures 54 to 62. The liquid dispensing unit 710 can, for example, be arranged in the area of ​​the disc tools 311, 312 on the surface cleaning head 100. However, an arrangement on the guide element 200, for example in the form of a spray nozzle or the like, is also conceivable and possible.

[0379] The liquid dispensing unit 710, arranged on the surface cleaning head 100 and not shown in detail here, is detachably connected to the liquid reservoir 730 via the fluid connection of the connecting device 1100 (see Fig. 62). The liquid reservoir 730 is detachably attached to the guide part 200 and has an elongated shape. The liquid reservoir 730 of the liquid dispensing unit 700 and the liquid reservoir 530 of the liquid receiving unit 500 are attached to opposite sides of the guide part 200. The configuration of the two liquid reservoirs 530, 730 shown in the figures is to be understood as exemplary. Instead of two separate liquid reservoirs 530, 730 for storing fresh water on the one hand (liquid reservoir 730) and wastewater on the other hand (liquid reservoir 530), a common reservoir can also be provided as a type of recycling device.Regarding this aspect, reference is made to what has already been disclosed, in particular with reference to Figures 3 and 44. Furthermore, reference is made to the German patent application with official file number 10 2024 103 715.6 filed by the applicant. This application discloses various embodiments of such a recycling device for a surface cleaning machine. The entire disclosure of the aforementioned German patent application is incorporated herein by express reference as the subject of the present description.

[0380] The liquid conveying device 720 of the liquid dispensing device 700 is also housed in the casing 203 of the guide part 200. In the illustrated embodiment, the liquid conveying device 720 is a solenoid valve with which a gravity-driven dispensing of liquid from the liquid tank 730 can be controlled. Alternatively or additionally, the liquid conveying device 720 can include a pumping unit.

[0381] In the embodiment shown, the control device 800 is also arranged in and / or on the guide part 200. It is also conceivable and possible that the control device 800 is at least partially housed in the casing 203.

[0382] In the embodiment shown, a rechargeable battery is detachably attached to the surface cleaning head 100 as the electrical energy source 850 and is detachably fastened to the support structure 110 for this purpose.

[0383] The power source 850 attached to the surface cleaning head 100 is detachably electrically connected to electrical consumers and / or the control unit 800 via the electrical connection(s) of the connecting device 1100. Electrical consumers in this sense can be, for example, the liquid conveying devices 520, 720. The surface cleaning device G6 does not have an adapter device 1200 in this case (see also Figures 21 to 26). In other embodiments, the surface cleaning device G6 has such an adapter device 1200.

[0384] The auxiliary tool assembly 1300 of the surface cleaning device G6 comprises a first auxiliary tool unit 1301 and a second auxiliary tool unit 1302, each with an auxiliary disc tool 1311, 1312. The disc tools 311, 312 can also be referred to as main disc tools. The configuration of the main disc tools 311, 312 and the surface cleaning device G6 is as follows:

[0385] Disc attachment tools 1311, 1312 correspond approximately to the embodiment shown in Fig. 40. To avoid repetition, reference is made to the relevant disclosure.

[0386] In the embodiment shown, the additional disc tools 1311, 1312 are not driven by a separate drive motor, but instead via the disc tools 311, 312. The transmission device 1400, which can also be considered a gearbox 1700 (see also Figs. 45 to 53), is provided to transmit the tool movement of the disc tools 311, 312 to the additional disc tools 1311, 1312.

[0387] The two disc tools 311, 312 each have a drive tooth 1440. The two drive tooth 1440s are not in mesh with each other. In the illustrated embodiment, the drive tooth 1440s are formed on a section 3111 of the respective disc tool 311, 312. These sections 3111 are the mounting carrier 3115 of the respective disc tool 311, 312. Furthermore, the disc tools 311, 312 each have a machining attachment 3114 with a bristle material 3117.

[0388] In a preferred embodiment, the disc tool is a single piece, whereby the attachment carrier is integral with the drive teeth or at least firmly connected and also firmly connected with the bristle material.

[0389] The drive gears 1440 are each engaged with an intermediate gear 1460. The intermediate gears 1460 are each meshed with one of the disc attachment tools 1311, 1312, more precisely: with their respective output gears 1450.

[0390] The disc attachment tools 1311, 1312 also have a processing attachment in the form of a bristle material (without reference numeral). In this respect, the disc tools 311, 312 and the disc attachment tools 1311, 1312 are designed similarly. Preferably, the disc attachment tools 1311, 1312 are movable along the vertical axis Z relative to the disc tools 311, 312, and in particular, are elastically pre-tensioned against the surface to be cleaned, for example by means of a pre-tensioning element, which can be designed in particular as a spring element. This allows height differences of the surface to be cleaned and / or of the tools to be compensated for and a uniform contact pressure to be achieved.

[0391] The disc tools 311, 312 are each detachably fixed to a tool driver 318, 319 without tools (see especially Fig. 60). The two tool drivers 318, 319 are each driven rotaryally by one of the two drive motors 320. The mounting carrier 3115 of the first disc tool 311 is detachably connected to the first tool driver 318 by means of a bayonet connection. The same applies, mutatis mutandis, to the connection between the second disc tool 312 and the second tool driver 319.

[0392] In the illustrated embodiment, the liquid intake device 500 has, in addition to the liquid intake 510 (main liquid intake), an auxiliary liquid intake 1510. The auxiliary liquid intake 1510 corresponds in principle to the design shown in Fig. 44. To avoid repetition, reference is made to the relevant disclosure. Consequently, each of the two auxiliary tool units 1301, 1302 has an auxiliary sealing lip 1512, which is arranged behind the respective disc auxiliary tool 1311, 1312 with respect to the longitudinal axis X and / or the direction of travel VR and rests on the surface F to be cleaned.

[0393] The auxiliary tool assembly 1300, and thus the two auxiliary tool units 1301 and 1302, are designed to be removable on the surface cleaning device G6. For this purpose, the fastening device 1600 is provided for the detachable attachment of the auxiliary tool assembly 1300 to the support structure 110. For the basic function of the fastening device 1600, reference is made to what has already been disclosed, in particular with reference to Figures 34 and 35.

[0394] Details of the fastening device 1600 and its fastening units 1610, 1620 are shown in particular in Figures 59 and 60. The support structure 110 has two first fastening sections 1610 arranged on its underside 114. The two auxiliary tool units 1301, 1302 each have a complementary second fastening section 1620. The second fastening sections 1620 are formed on the respective auxiliary support structure 1340 of the auxiliary tool units 1301, 1302. The fastening between the respective first and second fastening sections 1610, 1620 is a bayonet-type connection. However, any other suitable type of detachable connection, preferably without tools, is also possible. For example, a screw, plug, snap-fit, clamp, and / or magnetic connection can alternatively be provided.

[0395] In the surface cleaning device G6, the auxiliary tool units 1301, 1302 can each be replaced by an auxiliary guide element 1513. For this purpose, the auxiliary guide elements 1513 also each have a second mounting section 1620. The auxiliary guide elements 1513 act as splash guards and, when attached, are arranged on both sides of the disc tools 311, 312 with respect to the transverse axis Y. Such a configuration of the surface cleaning device G6 is shown in Fig. 58.

[0396] Alternatively or additionally, further auxiliary units are conceivable and possible, which can be attached to the surface cleaning head using the mounting device, instead of the auxiliary tool units and / or the auxiliary guide elements. The auxiliary units can each be part of a functional module, for example, a propulsion, particle collection, liquid dispensing, and / or liquid collection module.

[0397] Figures 57, 58, and 60 show the surface cleaning head 100 in a parked position. In this position, the surface cleaning head 100 is pivoted about the first pivot axis G1, lifted from the surface F, and / or positioned vertically. In the parked position, the surface cleaning head 100 and the guide element 200 are detachably fixed relative to each other. In a further embodiment, the surface cleaning head rests on the surface to be cleaned in the parked position. In the vertically positioned parked position, the disc tools 311 and 312 are freely accessible and / or positioned away from the surface F. The same applies to the additional disc tools 1311 and 1312. In the parked position, the additional tool units 1301 and 1302 can be removed from the surface cleaning head 100 and, if necessary, replaced by the additional guide elements 1513.

[0398] In one embodiment, the connecting device 1100 is designed such that the parking position must be assumed in order to disconnect the connection between the connecting units 1110, 1120.

[0399] If the auxiliary tool assembly 1300 is not attached (Fig. 58), then, in principle, no transmission of the tool movement of the disc tools 311, 312 to other tools is necessary. In this state, the surface cleaning device G6 can also be operated with (conventional) disc tools 31 T, 312' without drive gearing 1440. Further details of the specific construction of the auxiliary tool assembly 1300 are shown in Fig. 61. This refers to the second auxiliary tool unit 1302. The information disclosed for the first auxiliary tool unit 1301 applies, mutatis mutandis.

[0400] In the embodiment shown in Fig. 61, the (second) additional tool unit 1302 has an additional support structure 1340 on which the further components, parts and / or sections of the additional tool unit 1302 are arranged, attached and / or formed.

[0401] Preferably, the disc attachment tools 1311, 1312 are movable along the vertical axis Z relative to the support structure 340 and / or the additional support structure 1340, and in particular are elastically pre-tensioned against the surface to be cleaned, for example by means of a pre-tensioning element, which can be designed in particular as a spring element. This allows height differences of the surface to be cleaned and / or of the tools to be compensated for and a uniform contact pressure to be achieved.

[0402] The additional support structure 1340 comprises a base body 1341 and a cover 1342.

[0403] The base body 1341 features, in particular, the second mounting section 1620. The base body 1341 also has several bearing seats (without reference numerals) for the rotatable mounting of the second disc attachment tool 1312 (not shown in Fig. 61), the output gear 1450, and the intermediate gear 1460. In the illustrated embodiment, the output gear 1450 is designed as a separate gear which, when assembled, is torque-resistant and connected to the second disc attachment tool 1312.

[0404] In one design, liquid dispensing is provided at the additional tool units.

[0405] Furthermore, it is particularly possible to form the toothing of the disc attachment tool integrally or in one piece with it. The mounting section on one or more different base bodies is also particularly advantageous if it is designed in such a way that disc attachment tools of various sizes and dimensions can be arranged on the base body. For example, disc attachment tools with a brush diameter of 5 cm, measured by the area of ​​the brush with which it works the surface during rotation, can be replaced by disc attachment tools with a brush diameter of 10 cm if a further increased working width appears advantageous for the respective machining situation, or conversely, the working width can be reduced again if the situation requires it.It is therefore particularly preferred to provide disc attachment tools in various sizes, for example with diameters of 5 cm, 10 cm and 15 cm, as a disc attachment tool set.

[0406] The base body 1341 also has a receiving section for the additional sealing lip 1512 of the additional fluid intake 1510. The cover 1342 serves as a top cover for the bearing seats formed on the base body 1341.

[0407] Figures 63 and 64 show another embodiment of a surface cleaning device G7. The function and basic design of the surface cleaning device G7 according to Figures 63 and 64 are largely identical to the surface cleaning device G6 according to Figures 54 to 62. To avoid repetition, only the essential differences are described below.

[0408] Unlike the surface cleaning device G6, the auxiliary tool assembly 1300 of the surface cleaning device G7, as shown in Figures 63 and 64, is not removable. Instead, the auxiliary disc tools 1311 and 1312 of the auxiliary tool assembly 1300 are rotatably mounted directly on the support structure 110 of the surface cleaning head 100. Consequently, the surface cleaning head 100 has a fixed width, unlike the embodiment shown in Figures 54 to 62. While the auxiliary disc tools 1311 and 1312 can, in principle, be removed, for example, for repair or replacement, operation without the two auxiliary disc tools 1311 and 1312 is neither intended nor practical.

[0409] In further contrast, the drive motor 1320 is arranged on a top surface 113 of the support structure 110. Specifically, the drive motor 320 is mounted on a carrier plate 115 of the surface cleaning head 100. In the illustrated embodiment, the carrier plate 115 is joined to the support structure 110 in a manner not shown in detail, for example by screws.

[0410] The fluid reservoir 510 extends across the entire width of the four disc tools 311, 312, 1311, and 1312. Furthermore, the fluid reservoir 510 is pivotably mounted on a retaining arm 116. The retaining arm 116 is pivotally mounted on the support plate 115 about the first pivot axis T1. This allows the fluid reservoir 510 to be pivoted upwards about the first pivot axis T1 and lifted off the surface F as needed. Additionally, the pivot point of the guide element on the arm / bridge can be adjusted, depending on its position, to distribute the pressure of the guide element's weight proportionally between the tools and the fluid reservoir.

[0411] Figures 65 and 66 show another embodiment of a surface cleaning head 100 with a fixedly attached auxiliary tool assembly 1300. As with the surface cleaning head 100 of the surface cleaning device G7 according to Figures 63 and 64, the two disc auxiliary tools 1311, 1312 are rotatably mounted directly on the support structure 110, and the surface cleaning head 100 has a fixed width.

[0412] The configuration of the main disc tools 311, 312 and the additional disc tools 1311, 1312 and their drive corresponds approximately to the embodiment shown in Fig. 52. To avoid repetition, reference is made to the relevant disclosure.

[0413] The drive motor 320 is attached to a carrier plate 115, which also carries / has the bearing device 1000 and the first connecting unit 1110 of the connecting device 1100.

[0414] In contrast to the configuration shown in Fig. 52, the drive motor 320 first drives an intermediate gear 1460, which can also be considered an intermediate gear 1770. The intermediate gear 1770 engages with both disc main tools 311, 312, more precisely: with their output teeth 1450, which can each also be considered an output gear 1720. This results in a counter-rotating motion of the two disc main tools 311, 312.

[0415] The additional disc tools 1311 and 1312 each have a (further) output tooth 1450. These engage with a (further) intermediate rim 1460 and an (further) intermediate gear 1770, respectively. The additional disc tools 1311 and 1312 are driven indirectly via the respective intermediate gear 1460 by the adjacent main disc tool 311 and 312.

[0416] In the embodiment according to Figures 65 and 66, the disc main tools 311, 312 each have a multi-part structure. In particular, the respective sections 3111 and thus the output gearing 1450 are designed as separate components of the respective disc main tools 311, 312. The output gears 1720 of the

[0417] Disc main tools 311, 312 are detachably connected to their respective tool carriers 318, 319 via bayonet connections MV5. A further bayonet connection MV5' is provided between the respective output gear 1720 and the respective attachment carrier 3115. Other connection types are also possible instead of bayonet connections. This allows the machining attachment 3114 to be detached from the drive gear 1720 together with the attachment carrier 3115. Alternatively, the drive gear 1720, together with the attached attachment carrier 3115 and machining attachment 3114, can be detached from the respective tool carrier 318, 319.

[0418] In the embodiment shown in Figures 65 and 66, the tool drivers 318, 319 serve as bearing elements for the respective disc tools 311, 312. Unlike the embodiment shown in Figures 54 to 64, no drive is transmitted via the tool drivers 318, 319. In other words, the tool drivers 318, 319 do not transmit any drive forces and / or drive torques to the disc tools 311, 312.

[0419] Figure 67 shows a variant of the surface cleaning head 100 according to Figures 65 and 66. The surface cleaning head according to Figure 67 has a motor drive 321, which is designed as a belt drive R. The motor drive 321 serves to reduce the output speed of the drive motor 320. A belt drive offers particular advantages because it requires little maintenance, is durable, and is especially quiet during operation.

[0420] Specifically, the belt drive R comprises a pulley 3211 and a drive belt 3212. The pulley 3211 is rotatably mounted on the support structure 110 and is torque-resistant to the (first) tool driver 318. In this configuration, the first tool driver 318 drives the first disc main tool 311. Its tool movement can be transmitted via intermediate gears to the second disc main tool 312 on the one hand and to the first disc auxiliary tool 1311 on the other. In the configuration shown in Fig. 67, the second disc auxiliary tool 1312 is driven by the second disc main tool 312 via a further intermediate gear.

[0421] Fig. 68 shows another embodiment of a surface cleaning device G8.

[0422] To avoid repetition, only the essential differences compared to the surface cleaning device G6 are explained according to Figs. 54 to 62.

[0423] In contrast to the surface cleaning device G6, the auxiliary tool units 1301, 1302 of the surface cleaning device G8 each have a separate auxiliary drive motor 1321, 1322. As shown in Fig. 69, the auxiliary drive motors 1321, 1322 are each attached to the auxiliary support structure 1340 of the respective auxiliary tool unit 1301, 1302 and are therefore removable together with the auxiliary tool units 1301, 1302. In the embodiment according to Figs. 68 and 69, a transmission device for transferring the tool movement of the main disc tools 311, 312 to the auxiliary disc tools 1311, 1312 is not required.

[0424] Fig. 70 shows another embodiment of a surface cleaning head 100 with removable auxiliary tool units 1301, 1302. A transmission device 1400 is formed between the main disc tools 311, 312 and the respective adjacent auxiliary disc tool 1311, 1312. This transmission device is not shown in detail in Fig. 70, but can be designed, for example, according to the embodiment shown in Figs. 54 to 62 and / or 65 to 67.

[0425] Fig. 71 shows another embodiment of a surface cleaning system S4 with a surface cleaning device G9 and further surface cleaning heads 100', 100".

[0426] The surface cleaning device G9 comprises a surface cleaning head 100 and a guide assembly 250, wherein the guide assembly 250 and the surface cleaning head 100 are mechanically and drive-wise connected to each other by means of an adapter device 1200. The basic structure and operation of the surface cleaning device G9 correspond in this respect to the embodiment according to Figures 21 to 25. The surface cleaning system S4 according to Figure 71 is essentially designed according to the configuration already explained with reference to Figure 26.

[0427] The guide arrangement 250 comprises a guide element 200 and a support plate 115. The guide element 200 is mechanically connected to the support plate 115 by means of a connecting device 1100, which can be detachably connected without tools. The connecting device 1100 of the guide arrangement 250 can be designed, in particular, according to the embodiment shown in Fig. 62.

[0428] The first connecting unit 1110 and the bearing device 1000 are assigned to the carrier plate 115. The drive motor 320 is attached to the carrier plate 115.

[0429] The connecting device 1100 allows the carrier plate 115, together with its bearing assembly 1000 and the drive motor 320, to be optionally connected to, or already connected to, other guide components, as is the case, for example, in the embodiment shown in Fig. 20. The carrier plate 115, more precisely its underside, functions as the first joining section 1211 of the first adapter unit 1210. An output shaft (with or without output gear) of the drive motor 320, not shown in detail in the figures, functions as the first drive section 1212 of the first adapter unit 1210 (see Figs. 72 to 74).

[0430] The surface cleaning heads 100, 100', 100" can in turn be designated as first surface cleaning head 100, second surface cleaning head 100' and third surface cleaning head 100" respectively. Each of the surface cleaning heads 100, 100', 100" has a second adapter unit 1220. In this way, the different surface cleaning heads 100, 100', 100" can be selectively connected to the guide arrangement 250, specifically to the first adapter unit 1210 arranged on the carrier plate 115.

[0431] The second adapter units 1220 of the surface cleaning heads 100, 100', 100" each have a second joining section 1221 recessed into the top surface 114 of the respective support structure 110. The second joining section 1221 has a contour complementary to the underside of the carrier plate 115 and thus to the first joining section 1221. This ensures that the carrier plate 115 is positively locked to the support structure 110 along the transverse axis Y and the longitudinal axis X when in place.

[0432] The second joining sections 1221 each have two threaded bores 1225 spaced apart along the transverse axis Y, which serve to receive a screw element 1215 mounted on the carrier plate 115. The screw elements 1215 are designed as thumbscrews and can be tightened and loosened by a user without tools. Other types of connection are also possible and conceivable, for example, by clips, magnets, or locking elements, and the like.

[0433] The second joining sections 1221 each have a recess extending from the upper surface 113 to the lower surface 114 of the support structure 110 for the first drive section 1212. Below the recess, the second drive section 1222 is arranged, although this is not shown in detail in the figures. The second drive section 1222 can, for example, be in the form of an intermediate gear, an intermediate toothed gear, or an output toothing formed directly on the main disc tools 311, 312.

[0434] The surface cleaning heads 100, 100', 100" have different properties with regard to their respective tools and different dimensions. Specifically: The first surface cleaning head 100 has two main disc tools 311, 312 and two auxiliary disc tools 1311, 1312 and is essentially identical to the embodiments shown in Figures 63 to 67 with regard to the arrangement of said tools. The auxiliary disc tools 1311, 1312 are mounted directly on the support structure 110. There are no removable auxiliary tool units. Consequently, the surface cleaning head 100 has a fixed width.

[0435] The second surface cleaning head 100' (Fig. 73) again has two disc tools 311 , 312 and no additional tool device.

[0436] The third surface cleaning head 100" (Fig. 74) has two main disc tools 311, 312 and two auxiliary disc tools 1311, 1312. The auxiliary disc tools 1311, 1312 are each components of an auxiliary tool unit 1301, 1302.

[0437] Additional tool units 1301 and 1302 can each be optionally removed and attached, allowing the width of the 100" surface cleaning head to be varied.

[0438] The additional tool units 1301, 1302 each have an additional support structure 1340, which is attached to the support structure 110 in a manner not shown in detail in Fig. 74. The additional support structures 1340 each have a tool driver to which the respective disc main tool 311, 312 is drivenly attached, for example by means of a bayonet connection according to the embodiment shown in Figs. 54 to 62.

[0439] Each of the additional support structures 1340 has an additional fluid intake 1510 with an additional sealing lip 1512 attached. The additional sealing lips 1512 are pivotally movable about a pivot axis (without reference numeral) extending parallel to the vertical axis Z between different positions relative to the additional support structure 1340.

[0440] Fig. 75 shows an autonomous surface cleaning robot A with a robotics unit 900 and a surface cleaning head 100.

[0441] The surface cleaning head 100 can, in principle, have any of the previously described configurations.

[0442] The robotic device 900 and the surface cleaning head 100 are detachably connected to each other by means of a connecting device 1100. The connecting device 1100 can, for example, be designed according to the embodiment shown in Fig. 62. The robotic device 900 includes, among other things, liquid containers 530, 730 of the liquid intake device 500 and the liquid dispensing device 700. In addition, liquid conveying devices 520, 720 are assigned to the robotic device 900, as is a control device 800.

[0443] The robotics device 900 (robotics module M7, see Fig. 2) can, in principle, have any design suitable for the present purpose, for example, those described in the German patent applications with official file numbers 10 2023 136 195.3 and 102023 136 194.5 of the applicant. The respective content of these applications is incorporated herein by reference.

[0444] In the embodiment shown in Fig. 75, the robotic device 900 has a drive unit 901 (not shown in detail) with drive wheels 902, of which only one is visible in Fig. 75. The robotic device 900, together with the surface cleaning head 100, can be moved across the surface to be cleaned by means of the drive unit 901.

[0445] The drive unit 901 and other components, such as the two liquid containers 530, 730, the liquid conveying devices 520, 720 and the control unit 800 are mounted in and / or on a housing 903 of the robotic device 900.

[0446] For autonomous control of the surface cleaning robot A, the robotics device 900 has a processor device 904, which can be assigned to the control device 800.

[0447] A sensor device 905 serves to detect the environment of the surface cleaning robot A. The sensor device 905 is arranged on a front side of the housing 903 and can have one or more sensors suitable for detecting the environment, for example an ultrasonic, radar, lidar or other sensor.

[0448] Furthermore, a data transmission device 906 is present and configured for data transmission. In this case, the transmission is wireless via a dedicated antenna 907.

[0449] In the embodiment shown in Figures 76 and 77, the surface cleaning head 100 has a main tool assembly with a first disc tool 311 and a second disc tool 312. The surface cleaning head 100 also has an auxiliary tool assembly with a first auxiliary disc tool 1311 and a second auxiliary disc tool 1312.

[0450] A gear unit 1700 with a drive wheel 1710 and driven wheels 1720, 1721, 1722 is provided for the transmission of the drive movement to and between the disc tools or disc auxiliary tools.

[0451] In the embodiment shown in Figures 76 and 77, the first disc tool 311 is driven by the drive motor 320. The drive is transmitted from the drive motor 320 via a drive train 330. In Figures 76 and 77, the drive motor 320 and the drive train 320 are concealed under a cover (without reference numerals) of the surface cleaning head 100.

[0452] In the embodiment shown, the drive motor 320 is a brushless electric motor with an external rotor. The drive train 330 comprises a planetary gearbox, by means of which the output speed of the drive motor 320 is reduced. In this case, the gear ratio is 10:1. In other words, 10 revolutions of the drive motor 320 are converted into one revolution of the first disc tool 311.

[0453] In the present case, the first disc tool 311 has the drive wheel 1710. The second disc tool 312, the first disc auxiliary tool 1311 and the second disc auxiliary tool 1312 each have one of the output wheels 1720, 1721, 1722.

[0454] The drive wheel 1710 is directly engaged with the output wheel 1720 of the second disc tool 312. Furthermore, the drive wheel 1710 is indirectly engaged, via an intermediate wheel 1770 of the transmission unit 1700, with the output wheel 1722 of the first additional disc tool 1311. The output wheel 1720 of the second disc tool 312 is engaged, via a further intermediate wheel 1770 of the transmission unit 1700, with the output wheel 1721 of the second additional disc tool 1312.

[0455] In the embodiment according to Figures 76 and 77, the drive motor 320 drives the first disc tool 311 about the (further) axis of rotation D2 and counterclockwise with respect to the plane of Figure 77. Through the described transmission of the drive motion, the second disc tool 312 and the second additional disc tool 1312 are thereby driven clockwise. The first additional disc tool 1311 is driven counterclockwise.

Claims

1. Patent claims 1. Surface cleaning head (100) for a surface cleaning device (G1 to G9) for cleaning a surface (F), comprising a support structure (110) extending along a longitudinal axis (X), a transverse axis (Y), and a vertical axis (Z) of the surface cleaning head (100), a main tool assembly (300) mounted on the support structure (110) and comprising at least one main tool (310) extending along the transverse axis (Y) over a main tool width (B1) and resting on the surface (F) to be cleaned along the vertical axis (Z) during operation of the surface cleaning head (100), and which can be driven movably relative to the support structure (110) by means of a drive unit (340) of the surface cleaning device (G1 to G9) to act on the surface (F) to be cleaned, characterized in that an additional tool assembly (1300) is present and associated with the support structure (110), wherein the additional tool device (1300) has at least one additional tool (1310),which, during operation of the surface cleaning head (100), rests on the surface (F) to be cleaned along the vertical axis (Z), is arranged offset relative to which at least one main tool (310) is arranged along the transverse axis (Y) and extends along the transverse axis (Y) over an additional tool width (B2) in order to act on the surface (F) to be cleaned in addition to the at least one main tool (310), forming a wider overall tool width (B3) of the surface cleaning head (100).

2. Surface cleaning head (100) according to claim 1, wherein the at least one additional tool (1310) can be driven by means of the drive device (340) relative to the support structure (110).

3. Surface cleaning head (100) according to claim 2, further comprising a transmission device (1400) which is configured to transmit a tool movement of the at least one main tool (310) to the at least one auxiliary tool (1310).

4. Surface cleaning head (100) according to claim 3, wherein the transmission device (1400) has a drive contour (1410) arranged on the main tool (310), in particular formed, and a drive contour (1420) arranged on the auxiliary tool (1310), in particular formed, which engages at least indirectly with the drive contour (1410) of the main tool (310).

5. Surface cleaning head (100) according to claim 3 or 4, wherein the transmission device (1400) is a gear drive (1430) with a drive toothing (1440) and an output toothing (1450), wherein the drive toothing (1440) is assigned to the at least one main tool (310), wherein the output toothing (1450) is assigned to the at least one auxiliary tool (1310), and wherein the drive toothing (1440) and the output toothing (1450) are at least indirectly engaged with each other.

6. Surface cleaning head (100) according to one of the preceding claims, wherein the additional tool device (1300) is transferable relative to the support structure (110) between a first position in which the total tool width (B3) is present and a second position in which there is no or a little widening of the surface cleaning head (100), in particular wherein the second position is a non-use position.

7. Surface cleaning head (100) according to one of the preceding claims, wherein the additional tool device (1300) is detachably attached to the support structure (110) by means of a manually releasable fastening device (1600).

8. Surface cleaning head (100) according to claim 7, wherein the fastening device (1600) has at least one fastening section (1610) which is arranged and / or formed on the support structure (110) and at least one complementary fastening section (1620) which is arranged and / or formed on the additional tool device (1300).

9. Surface cleaning head (100) according to claim 8, wherein the additional tool device (1300) has at least one additional support structure (1340), wherein the at least one additional tool (1310) is mounted on the additional support structure (1340) in a manner movably driven, in particular relative to the additional support structure (1340), and / or wherein the complementary fastening section (1620) is arranged and / or formed on the additional support structure (1340).

10. Surface cleaning head (100) according to one of the preceding claims, further comprising a propulsion device (400) which is configured to generate a propulsion force (VK) along a propulsion direction (VR) extending preferably parallel to the longitudinal axis (X), wherein the propulsion force (VK) of the propulsion device (400) assists or causes a movement of the surface cleaning head (100) over the surface (F) to be cleaned.

11. Surface cleaning head (100) according to one of the preceding claims, wherein the main tool device (300) is for generating a propulsive force (VK) along a, preferably extending parallel to the longitudinal axis (X), the direction of travel (VR) is set up, wherein the driving force (VK) of the main tool device (300) supports or causes a movement of the surface cleaning head (100) over the surface (F) to be cleaned.

12. Surface cleaning head (100) according to one of the preceding claims, wherein the auxiliary tool device (1300) is configured to generate a propulsion force (VK) along a propulsion direction (VR) extending preferably parallel to the longitudinal axis (X), wherein the propulsion force (VK) of the auxiliary tool device (1300) assists or causes a movement of the surface cleaning head (100) over the surface (F) to be cleaned.

13. Surface cleaning head (100) according to one of the preceding claims, wherein the at least one main tool (310) is a disc main tool (311) with a vertical axis of rotation (D1) extending along the vertical axis (Z).

14. Surface cleaning head (100) according to claim 13, wherein the main tool assembly (300) has at least two disc main tools (311 , 312) arranged side by side along the transverse axis (Y) and which can be driven in opposite directions about their respective vertically oriented axis of rotation (D1 , D2) by means of the drive assembly (340).

15. Surface cleaning head (100) according to claim 14, wherein the main tool assembly (300) comprises exactly two disc main tools (311 , 312).

16. Surface cleaning head (100) according to claim 14 or 15, wherein the disc main tools (311 , 312) each have a diameter between 7.5 cm and 25 cm, preferably between 10 cm and 20 cm.

17. Surface cleaning head (100) according to one of claims 14 to 16, wherein the at least two disc main tools (311 , 312) are arranged to generate a / the propulsion (VK, VR), in particular by inclining the vertically oriented axes of rotation (D1 , D2) towards each other.

18. Surface cleaning head (100) according to one of the preceding claims, wherein the auxiliary tool device (1300) comprises at least a first auxiliary tool (1303) and a second auxiliary tool (1304) arranged on outer sides of the support structure (110) opposite each other along the transverse axis (Y) on both sides of the main tool device (300).

19. Surface cleaning head (100) according to claim 18, wherein the first auxiliary tool (1303) and the second auxiliary tool (1304) are each a disc auxiliary tool (1311 , 1312) with a vertical axis of rotation extending along the vertical axis (Z).

20. Surface cleaning head (100) according to claim 19, wherein the auxiliary tool device (1300) comprises exactly two disc auxiliary tools (1311 , 1312).

21. Surface cleaning head (100) according to claim 19 or 20, wherein the disc attachment tools (1311 , 1312) each have a diameter between 4 cm and 10 cm, preferably between 5 cm and 7.5 cm.

22. Surface cleaning head (100) according to one of claims 19 to 21 in combination with one of claims 14 to 17, wherein the disc auxiliary tools (1311 , 1312) each have a diameter which is between 20% and 80% of a respective diameter of the disc main tools (311 , 312).

23. Surface cleaning head (100) according to one of claims 15 to 22, wherein exactly two disc main tools (311 , 312) and exactly two disc auxiliary tools (1311 , 1312) are provided, wherein the disc auxiliary tools (1311 , 1312) each have a diameter which is between 20% and 80% of a respective diameter of the disc main tools (311 , 312).

24. Surface cleaning head (100) according to one of claims 15 to 23, wherein exactly two main disc tools (311, 312) and exactly two additional disc tools (1311, 1312) are provided, wherein the main disc tools (311, 312) each have a diameter between 7.5 cm and 25 cm, preferably between 10 and 20 cm, and wherein the additional disc tools (1311, 1312) each have a diameter between 4 cm and 10 cm, preferably between 5 cm and 7.5 cm.

25. Surface cleaning head (100) according to one of claims 19 to 24, wherein the at least two disc attachment tools (1311 , 1312) are arranged to generate a / the thrust (VK, VR), in particular by inclining the vertically oriented axes of rotation towards each other.

26. Surface cleaning head (100) according to one of the preceding claims, wherein the main tool width (B1) is between 10 cm and 35 cm or between 35 cm and 70 cm.

27. Surface cleaning head (100) according to one of the preceding claims, wherein the total tool width (B3) is between 110% and 200% of the main tool width (B1).

28. Surface cleaning head (100) according to one of the preceding claims, further comprising a liquid absorption device (500) which is designed to absorb liquid from the surface (F) to be cleaned.

29. Surface cleaning head (100) according to claim 28, wherein the liquid intake device (500) has a main liquid intake (510) and an additional liquid intake (1510), wherein the main liquid intake (510) is arranged along the longitudinal axis (X) behind the main tool device (310) and extends longitudinally along the transverse axis (Y) over the, preferably entire, main tool width (B1), and wherein the additional liquid intake (1510) is arranged along the longitudinal axis (X) behind the additional tool device (1300) and extends longitudinally along the transverse axis (Y) over the, preferably entire, additional tool width (B2).

30. Surface cleaning head (100) according to claim 29, wherein the main liquid intake (510) has at least one sealing lip (512) lying on top of the surface (F) to be cleaned.

31. Surface cleaning head (100) according to claim 30, wherein the main liquid intake (510) has two sealing lips (512, 513) spaced apart along the longitudinal axis (X) to form a suction channel (514), each of which rests on the surface (F) to be cleaned.

32. Surface cleaning head (100) according to one of claims 29 to 31, wherein the additional liquid intake (1510) has at least one additional sealing lip (1512) which is associated with the at least one additional tool (1310), in particular wherein the at least one additional sealing lip (1512) is directly adjacent to the at least one sealing lip (512, 513) of the main liquid intake (510) along the transverse axis (Y) and / or projects laterally into the suction channel (514) and / or overlaps with at least one sealing lip of the main liquid intake.

33. Surface cleaning head (100) according to one of the preceding claims, further comprising a liquid dispensing device (700) which is configured to dispense liquid onto the surface (F) to be cleaned.

34. Surface cleaning device (G1 to G9) with a surface cleaning head (100) according to one of the preceding claims.

35. Surface cleaning device (G1 to G9) according to claim 34, further comprising a guide part (200) which extends longitudinally between a proximal end (201) and a distal end (202) which is connected to the surface cleaning head (100), wherein the guide part (200) is designed for manually guiding the surface cleaning head (100) over the surface (F) to be cleaned.

36. Surface cleaning device (G1 to G9) according to claim 34 or 35, further comprising at least one liquid container (530, 730), wherein the at least one liquid container (530, 730) is a component of a liquid receiving device (500) and / or a liquid dispensing device (700).

37. Surface cleaning device (G1 to G9) according to one of claims 34 to 36, further comprising a liquid conveying device (520, 720), wherein the at least one liquid conveying device (520, 720) is a component of one or more liquid receiving device (500) and / or one of the liquid dispensing devices (700).

38. Surface cleaning device (G1 to G9) according to one of claims 34 to 37, further comprising an energy storage device (850) which is designed to supply at least the drive device (340) with operating energy.

39. Surface cleaning device (G1 to G9) according to one of claims 34 to 38, further comprising a bearing device (1000) by means of which the guide part (200), in particular a distal end (202) of the guide part (200), and the surface cleaning head (100) are movably connected to each other, in particular wherein a direction of movement of the surface cleaning head (100) can be controlled by means of a movement of the guide part (200) relative to the surface cleaning head (100).

40. Surface cleaning device (G1 to G9) according to claim 39, wherein the bearing device (1000) is designed such that the guide part (200) is movable in different inclined positions relative to the surface cleaning head (100).

41. Surface cleaning device (G1 to G9) according to claim 39 or 40, wherein the storage device (1000) is designed such that the surface cleaning head (100), in particular in the different inclination positions of the guide part (200), is rotatable relative to the guide part (200) about the vertical axis (Z).

42. Surface cleaning device (G1 to G9) according to one of claims 39 to 41, wherein the bearing device (1000) forms a gimbal connection (K) between the guide part (200), in particular the distal end (202) of the guide part (200), and the surface cleaning head (100), whereby by means of a rotation of the guide part (200) about its longitudinal axis (L) the surface cleaning head (100) can be rotated about the vertical axis (Z) and in a plane of rotation parallel to the surface (F) while resting on the surface (F) in order to control the direction of movement of the surface cleaning head (100), wherein the gimbal connection (K) allows said controllability of the direction of movement of the surface cleaning head (100) for different orientations of the longitudinal axis (L) of the guide part (200) with respect to the vertical axis (Z) of the surface cleaning head (100).

43. Surface cleaning device (G1 to G9) according to claim 42, wherein the surface cleaning head (100) can be rotated by at least 10°, preferably at least 30°, more preferably at least 45°, more preferably at least 60°, more preferably at least 90°, more preferably at least 120°, more preferably at least 150°, more preferably at least 180°, more preferably at least 210°, more preferably at least 240°, more preferably at least 270°, more preferably at least 300°, more preferably at least 330°, more preferably at least 360° by means of a rotation of the guide part (200).

44. Auxiliary tool device (1300) for a surface cleaning head (100) according to one of claims 1 to 33 and / or for a surface cleaning device (G1 to G9) according to claims 34 to 43, wherein the auxiliary tool device (1300) is designed for attachment, in particular detachable attachment, to the surface cleaning head (100), in particular its support structure (110), and comprises at least one auxiliary tool (1310) which, in operation of the surface cleaning head (100), rests on the surface (F) to be cleaned along the vertical axis (Z), and, in the attached state, is arranged offset relative to the at least one main tool (310) along the transverse axis (Y) and extends along the transverse axis (Y) over an auxiliary tool width (B2) in order to act on the surface (F) to be cleaned in addition to the at least one main tool (310), forming a wider overall tool width (B3) of the surface cleaning head (100).

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