Cleaning roller for a cleaning machine, cleaning machine and method for cleaning a surface

Abstract

The invention presents a cleaning roller (60) which is intended for a cleaning machine (10) and, when the cleaning machine (10) is in operation, is driven in rotation about an axis of rotation (74), the cleaning roller comprising a roller body (138), a treatment device (184), which is arranged on the roller body (138) and, when the cleaning machine (10) is in operation, acts on a surface (46) to be cleaned, a first coupling device (146), which is arranged at a first end (142) of the roller body (138), and a second coupling device (148), which is arranged at a second end (144) of the roller body (138), wherein the at least one cleaning roller (60) is held on the cleaning machine (10) by way of the first coupling device (146) and the second coupling device (148), at least one of the following being provided: - a first cone portion (154), which is positioned on the first coupling device (146), is adjacent to the treatment device (184) and tapers in the direction of the treatment device (184); - a second cone portion (170), which is positioned on the second coupling device (148), is adjacent to the treatment device (184) and tapers in the direction of the treatment device (184).

Description

[0001] Cleaning roller for a cleaning machine, cleaning machine and method for cleaning a surface

[0002] The invention relates to a cleaning roller for a cleaning machine, which rotates about a rotational axis during operation of the cleaning machine, comprising a roller body, an acting device which is arranged on the roller body and acts on a surface to be cleaned during operation of the cleaning machine, a first coupling device which is arranged at a first end of the roller body, and a second coupling device which is arranged at a second end of the roller body, wherein the at least one cleaning roller is held on the cleaning machine via the first coupling device and the second coupling device.

[0003] The invention further relates to a cleaning machine comprising a cleaning head, at least one cleaning roller which is rotatable about a rotation axis and which is seated on the cleaning head, and a drive motor for a rotation drive of the at least one cleaning roller.

[0004] Furthermore, the invention relates to a method for cleaning a surface by means of a cleaning roller.

[0005] JP S58-125564 U discloses a rotating brush body.

[0006] JP H02-104322 A discloses a suction connection body for vacuum cleaners.

[0007] US 2015 / 0265117 Al discloses a cleaning head.

[0008] US 2015 / 0265119 A1 discloses a cleaning brush for a vacuum cleaner. WO 2011 / 125580 A1 discloses a suction device for an electric cleaner.

[0009] JP 2014-226221 A discloses a cleaning roller.

[0010] US 2011 / 0252594 A1 discloses a rotating cleaning element.

[0011] CN 217592707 U discloses a cleaning roller.

[0012] US 2014 / 0259522 Al also discloses a cleaning roller.

[0013] EP 2 770 892 A1 discloses a nozzle for a vacuum cleaner having a rotatable element arranged around a longitudinal axis for collecting particles from a surface to be cleaned. A cleaning arrangement is provided, which comprises at least one support surface provided on a radially projecting element of the rotatable element. Furthermore, a movable cleaning element is provided. In the cleaning position, the cleaning element cooperates with at least one segment of the support surface during rotation of the rotatable element to remove any objects entangled therein from the rotatable element.

[0014] Hair is a fundamental problem when it comes to rotating cleaning rollers, as it can become tangled in the cleaning roller.

[0015] The invention is based on the object of providing a cleaning roller of the type mentioned above which treats hair in an effective manner.

[0016] This object is achieved according to the invention in the cleaning roller mentioned at the outset in that at least one of the following is provided: a first conical section, which is positioned on the first coupling device, which borders the active device and which tapers towards the active device; a second conical section, which is positioned on the second coupling device, which borders the active device and which tapers towards the active device.

[0017] The first cone section and the second cone section are truncated cones with a corresponding conical outer surface. The first cone section and / or the second cone section ensure that fibrous structures, and in particular hair, are guided away from the respective coupling end of the cleaning roller into a central area. An outer surface of the respective cone section forms a guide surface, particularly for hair. This minimizes the number of hairs that can reach a coupling end of the cleaning roller (and become entangled there).

[0018] In particular, an outer surface of the cleaning roller lies on a lateral surface of a conical section.

[0019] Generally, a gap is required between a corresponding holder of the cleaning machine and a coupling end of the cleaning roller if the cleaning roller is to be prevented from rubbing against the holder. Hair and the like can get caught and entangled in such a gap. This can affect rotation or torque transmission.

[0020] The first cone section and second cone section according to the invention guide fibrous structures, and in particular hair, away from the respective cone end. The solution according to the invention particularly counteracts hair entanglement at the coupling ends.

[0021] By aligning the respective cone section with the active device, the active device is minimally influenced, resulting in a correspondingly large active length for the cleaning roller. The respective cone section can be arranged directly adjacent to the active device, or there can be a small gap. In principle, it is also possible for an active element, such as a bristle, to protrude toward the respective cone section in a small area, or for a small overlap to occur.

[0022] In principle, it is intended that the respective cone section has a smooth outer surface for its guiding function.

[0023] The solution according to the invention can be implemented in a structurally simple manner. In particular, the conical section can be designed as a type of housing for the respective coupling device (first conical section for the first coupling device, second conical section for the second coupling device).

[0024] According to the invention, the first conical section and / or the second conical section are designed as guide elements for hair (and other fibrous structures), which guide hair toward the knitting device and thereby away from the coupling ends. This effectively counteracts the entanglement of hair at the coupling ends.

[0025] It is advantageous if a cone angle of the first cone section and / or the second cone section is at least one of the following: greater than 5° and in particular greater than 7° and in particular 9° or 12°; less than 30° and in particular less than 20° and in particular less than 15°.

[0026] If a cone angle is too large, its guiding function for hair and other fibrous structures is severely impaired. If a cone angle is too small, the corresponding cone section takes up too much space compared to the active device. The above specifications result in a corresponding optimization in terms of hair treatment and cleaning effect.

[0027] For the same reason, it is advantageous if a length of the first cone section and / or the second cone section in a direction parallel to the rotation axis is at least one of the following: greater than 5 mm and in particular greater than 7 mm and in particular greater than 9 mm and in particular 11 mm or 15.2 mm; less than 20 mm and in particular less than 17 mm; at least 2% and in particular at least 3% and in particular

[0028] 4% or 6% of the total length of the cleaning roller; a maximum of 8% and in particular a maximum of 7% of the total length of the cleaning roller.

[0029] It is particularly advantageous if at least one of the following is provided: the first conical section and / or the second conical section is free of active elements of the active device; the active device extends between the first conical section and the second conical section. If the corresponding conical sections (and in particular their outer surfaces) are free of active elements such as bristles, an effective guiding function is achieved. In particular, a conical section can be formed with a smooth surface, so that catching or entangling of hair is minimized and an optimized guiding function is achieved.

[0030] A simpler design is achieved if a first end of the cleaning roller is located at the base of the first conical section and / or a second end of the cleaning roller is located at the base of the second conical section. This also minimizes gaps or areas where hair can become trapped in the area of ​​a coupling end.

[0031] In one embodiment, the first coupling device comprises a pivot bearing, in particular a ball bearing. This allows for easy coupling to a cleaning machine. No pivot bearing is required on the cleaning machine. The first coupling device is thus, to a certain extent, the passive side with regard to the coupling to the cleaning machine.

[0032] In one embodiment, the second coupling device comprises a receptacle and / or an immersion element for coupling to a drive element of the cleaning machine. The drive element of the cleaning machine is the element with which a torque is coupled into the cleaning roller for rotation about the rotation axis. With respect to a drive train on a cleaning head of the cleaning machine, the drive element is an output element of the drive train.

[0033] It is particularly advantageous if a cone axis of the first cone section and / or a cone axis of the second cone section coincides with the rotation axis. This results in a structurally simple design. It provides an optimized guiding function for fibrous structures. It is advantageous if the first cone section is at least partially positioned over the first coupling device and / or the second cone section is at least partially positioned over the second coupling device. This allows a type of housing to be formed for the respective coupling device.

[0034] In one embodiment, the cleaning roller is a brush roller in which the active device comprises bristles. However, it is also fundamentally possible for the cleaning roller to comprise, for example, a textile trim such as a microfiber material, or for a mixture of bristles and textile trim to be provided.

[0035] In a structurally advantageous embodiment, at least one web is provided and in particular a plurality of webs are provided, on which bristles are seated, in particular in the form of bristle bundles, wherein a web extends between the first conical section and the second conical section and is in particular connected to the first conical section and / or the second conical section and in particular is connected at the end to the first conical section and / or the second conical section. This results in a brush roller with high mechanical rigidity. Furthermore, gaps between a web and a conical section can be effectively kept small or prevented. Hair could, in turn, get caught in such a gap.

[0036] In one embodiment, the first cone section has a first base with a first envelope plane oriented perpendicular to the axis of rotation, and / or the second cone section has a second base with a second envelope plane oriented perpendicular to the axis of rotation. This allows the respective cone section to be arranged at one end of the cleaning roller with the base. Facing a holder of the cleaning machine, a minimized gap is created. In particular, a first element of the first coupling device for connection to the cleaning machine is positioned on a first base of the first cone element and / or a second element of the second coupling device for connection to the cleaning machine is positioned on a second base of the second cone element. This results in a structurally simple design.

[0037] The invention is further based on the object of providing a cleaning machine of the type mentioned above with optimized hair treatment.

[0038] This object is achieved according to the invention in the cleaning machine mentioned at the outset by using at least one cleaning roller according to the invention.

[0039] Advantages of the corresponding cleaning machine have already been explained in connection with the cleaning roller according to the invention.

[0040] In particular, a blower device is provided, which generates a suction flow, which in particular acts on a surface to be cleaned and / or the at least one cleaning roller. This results in an optimized cleaning result. For example, the cleaning machine is designed as a brush vacuum (and in particular as a carpet brush vacuum). It can also be implemented, for example, as a cleaning robot with a sweeping function (and possibly a wiping function).

[0041] The object mentioned above is further achieved according to the invention in that a lifting device is arranged on the cleaning head, by means of which the at least one cleaning roller can be lifted relative to a mounting plane of the cleaning head on a surface to be cleaned, in that an actuating device is provided for actuating the lifting device, and in that a stripping device is arranged on the cleaning head, against which the at least one cleaning roller can be pressed via the lifting device in a self-cleaning mode. In principle, hair or other fibrous structures, as well as additional dirt, can become caught on an active device of the cleaning machine (such as brushes).

[0042] In the solution according to the invention, the at least one cleaning roller can be moved by the lifting device against a stripping device, actuated via the actuating device. The stripping device then acts on the active device of the cleaning roller in the corresponding self-cleaning mode, and hair and the like can be removed.

[0043] The interruption of operation related to cleaning operations for a surface to be cleaned can be minimized in terms of time for self-cleaning operations. In particular, self-cleaning operations occur while at least one cleaning roller continues to rotate.

[0044] It is advantageous if, in the self-cleaning mode of the cleaning machine, the at least one cleaning roller is pressed against the stripping device during rotation of the at least one cleaning roller about the rotation axis. This ensures that an active device of the cleaning roller is automatically guided past the stripping device in order to remove hair and the like.

[0045] In principle, it is possible for the actuating device to be designed such that the force required to lift the at least one cleaning roller by means of the lifting device is provided by an operator. This results in a structurally simple design.

[0046] In particular, the actuating device then comprises an operating element for force application. This operating element is, for example, a foot switch. When the operator presses the appropriate button (with force), the actuating device then causes the lifting action. Alternatively, the actuating device may comprise a drive for lifting the lifting device, which may be electric, hydraulic, or pneumatic. The force for the lifting action is then provided by the drive.

[0047] In particular, the actuating device then comprises an operating element for controlling the drive and, in particular, for initiating a lifting action. When the operating element is operated, a corresponding control signal, preferably an electrical signal, is sent to the drive to initiate the lifting action.

[0048] In a structurally simple embodiment, the lifting device comprises a rocker arm, which is mounted on the cleaning head so that it can pivot about a pivot axis and which holds the at least one cleaning roller. The rocker arm then carries a holder for the cleaning roller. By pivoting the rocker arm accordingly, the at least one cleaning roller can be easily lifted from a surface to be cleaned and brought against the stripping device to strip off hair and the like.

[0049] In a structurally advantageous embodiment, the pivot axis is oriented parallel to the rotation axis of the at least one cleaning roller. This results in a space-saving design.

[0050] It is advantageous if a spring device is assigned to the rocker, wherein a spring force of the spring device presses the rocker in the direction of a mounting plane of the cleaning head on a surface to be cleaned. The spring device allows the cleaning operation to be optimized. The spring force of the spring device presses the at least one cleaning roller against the surface to be cleaned and improves the mechanical effect on the surface to be cleaned. This also makes it possible to achieve a type of floating bearing for the at least one cleaning roller. It is advantageous if a drive element, which is coupled to the at least one cleaning roller for the rotational drive of the at least one cleaning roller, is located on the rocker, and the drive motor for the at least one cleaning roller is positioned outside the rocker. In relation to the drive train with the drive motor, the drive element is an output element.The drive element (output element) essentially follows the same movement as the rocker. This results in optimized power transmission (torque introduction) to the cleaning roller for its rotational movement. Even when the cleaning roller is raised, it can rotate to optimize the self-cleaning effect of the scraper device.

[0051] In a structurally simple embodiment, a drive element (in relation to a drive train, output element), to which the at least one cleaning roller is coupled, is connected to the drive motor in a torque-effective manner via a traction mechanism with a traction means, and the traction means is then guided on at least one deflection pulley. This makes it easy to transmit torque from a motor shaft to the spaced-apart drive element. Furthermore, the traction means allows the drive element to be movable relative to the drive motor in a structurally simple manner. For example, the traction mechanism is a chain drive or belt drive. The deflection pulley ensures optimized guidance of the traction means, regardless of whether the cleaning roller acts on the surface to be cleaned or on the scraper device.

[0052] It is advantageous if the actuating device is coupled to the rocker arm, and the rocker arm pivots under the influence of the actuating device. The actuating device essentially provides the force or torque for pivoting the rocker arm. In particular, it is intended that the scraper device be fixed and, in particular, immovably mounted on the cleaning head. This results in a structurally simple design.

[0053] In particular, the stripping device is positioned above the at least one cleaning roller relative to a mounting plane of the cleaning head on a surface to be cleaned, with the at least one cleaning roller being positioned between the stripping device and the mounting plane. This results in optimized space utilization with a structurally simple design.

[0054] In one embodiment, the stripping device comprises (at least) one stripping bar, and in particular, precisely one stripping bar. This allows for effective detachment, in particular of fibrous structures, from the at least one cleaning roller with a structurally simple design.

[0055] It is advantageous if at least one of the following is provided: the scraper bar has an edge; an edge of the scraper bar is oriented parallel to the rotation axis; the scraper bar has an extension parallel to the rotation axis.

[0056] This results in a simple design, resulting in an effective stripping action of the stripping device.

[0057] The cleaning machine is designed, for example, as a hand-held cleaning machine (such as a brush vacuum) or as a self-propelled and self-steering cleaning machine (such as a cleaning robot). In one embodiment, a design as a carpet brush vacuum is provided, in which case the cleaning roller is a brush roller.

[0058] According to the invention, a method for cleaning a surface by means of a cleaning roller according to the invention is provided, in which the cleaning roller rotates for a cleaning process and picked-up hair is guided away from bearing ends (coupling ends) of the cleaning roller by the first cone section and / or the second cone section.

[0059] The method according to the invention has the advantages already explained in connection with the cleaning roller according to the invention.

[0060] The following description of preferred embodiments, taken in conjunction with the drawings, serves to further explain the invention. They show:

[0061] Figure 1 shows a first embodiment of an inventive

[0062] Cleaning machine in the form of a brush vacuum cleaner;

[0063] Figure 2 is a bottom view of a cleaning head of the cleaning machine according to Figure 1 in the direction A according to Figure 1;

[0064] Figure 3 is a sectional view taken along line 3-3 of the cleaning head shown in Figure 2;

[0065] Figure 4 is a side sectional view of the cleaning head according to Figure

[0066] 2 along the line 4-4 according to Figure 2;

[0067] Figure 5 is a partial view of elements of the cleaning head according to Figure 2;

[0068] Figure 6 is a view similar to Figure 5, with elements removed compared to Figure 5; Figure 7 is a plan view of an embodiment of a cleaning roller according to the invention (in Figure 2, this cleaning roller is shown positioned on the cleaning head);

[0069] Figure 8 is a perspective view of the cleaning roller according to

[0070] Figure 7;

[0071] Figure 9 is a further perspective view of the cleaning roller according to Figure 7;

[0072] Figure 10 is a sectional view of the cleaning head of Figure 3 taken along line 10-10;

[0073] Figure 11 is a sectional view of the cleaning head according to Figure 3 along the line 11-11;

[0074] Figure 12 is a view similar to Figure 10, wherein the cleaning roller is raised relative to a support plane and pressed against a scraper device;

[0075] Figure 13 is a view similar to Figure 11, with the cleaning roller lifted from the installation plane in accordance with Figure 12;

[0076] Figure 14 is a schematic representation of another embodiment of a cleaning machine in the form of a cleaning robot, wherein a cleaning roller is positioned on a mounting plane; and

[0077] Figure 15 shows the same view as Figure 14, with the cleaning roller raised against the support plane and pressed against a stripping device. One embodiment of a cleaning machine according to the invention is a (carpet) brush vacuum cleaner (Figure 1). The cleaning machine 10 comprises a cleaning head 12. A housing 14 is located on the cleaning head 12. A holding rod device 16 is arranged on the housing 14. A handle 18 and an operating device 20 are located at a proximal end of the holding rod device 16.

[0078] The operating device 20 comprises, for example, an on-off switch and further operating elements for controlling, in particular, the operation of the cleaning machine 10.

[0079] The housing 14 is pivotally connected to the cleaning head 12 via a pivot joint. A pivot axis is oriented in particular transversely and preferably perpendicularly to an extension direction of the holding rod device 16.

[0080] It is fundamentally possible for the holding rod device 16 to be pivotably connected to the cleaning head 12 and for the holding rod device 16 to hold the housing 14, or for the housing 14 to be pivotably connected to the cleaning head 12 and for the housing 14 to hold the holding rod device 16.

[0081] A blower device 22 is arranged in the housing 14. The blower device 22 comprises a blower motor and a blower and serves to generate a suction flow.

[0082] In the embodiment of the cleaning machine 10, a suction hose 24 leads from a top side of the housing 14 to a suction nozzle 26.

[0083] The housing 14 has a connection 28 at which the suction nozzle 26 can be positioned. A fluid path leads from the connection 28 to the cleaning head 12 and there to a suction port 30 (see Figure 2).

[0084] If the suction nozzle 26 is correctly positioned on the connection 28, then a suction path is led from the blower device 22 via the suction hose 24 to the suction opening 30 of the cleaning head 12 and the suction opening 30 can be supplied with the suction flow accordingly.

[0085] If the suction nozzle 26 is removed from the connection 28, the corresponding fluid path is only guided up to the suction nozzle 26 and a (local) suction can be carried out with the suction nozzle; in this case, no negative pressure flow is present at the suction orifice 30.

[0086] The cleaning head 12 (Figures 2 to 6, 10 to 13) has a housing 32.

[0087] The cleaning head 12 has a front end 34 and a rear end 36 opposite the front end. It has a bottom 38 and a top 40.

[0088] The cleaning machine 10 has a forward direction of travel 42 on a floor to be cleaned (see Figure 1). The forward direction of travel 42 is parallel to a direction from the rear end 36 to the front end 34.

[0089] It is transverse and in particular perpendicular to a height difference between the bottom side 38 and the top side 40.

[0090] A support device 44 is arranged on the cleaning head 12, which serves to mobilely support the cleaning machine 10 on a surface 46 to be cleaned (see Figure 4). In one embodiment (Figure 2), the support device 44 comprises a first roller 48 and a second roller 50. The first roller 48 and the second roller 50 are arranged in the region of the rear end 36 on the cleaning head 12. They are spaced apart from one another in a transverse direction 52 with a free space between them. The transverse direction 52 is perpendicular to the spacing direction between the rear end 36 and the front end 34.

[0091] The support device 44 further comprises a third roller 54 and a spaced-apart fourth roller 56, wherein the fourth roller 56 is spaced from the third roller 54 in the transverse direction 52. The third roller 54 and the fourth roller 56 are arranged in the region of the front end 34 on the cleaning head 12.

[0092] A rotational axis of the first roller 48 and the second roller 50 are coaxial with each other. A rotational axis of the third roller 54 and the fourth roller 56 is also coaxial. The rotational axes of the first roller 48 and the second roller 50 are parallel to the rotational axes of the third roller 54 and the fourth roller 56.

[0093] The axes of rotation are parallel to the transverse direction 52.

[0094] In one embodiment, the third roller 54 and the fourth roller 56 are formed with a smaller diameter than the first roller 48 and the second roller 50. In particular, the third roller 54 and the fourth roller 56 are positioned on an underside of the cleaning head 12.

[0095] The first roller 48 and the second roller 50 are positioned on a rear side of the cleaning head 12 at the rear end 36.

[0096] The support device 44 defines a support plane 45. If the surface 46 to be cleaned is a hard floor, the support plane 45 coincides with an enveloping plane (provided the surface to be cleaned is flat). If the surface 46 to be cleaned is adjacent to a carpet, the cleaning head 12 generally sinks slightly. A receiving space 58 for a cleaning roller 60 is formed on the cleaning head 12 (Figure 2). The receiving space 58 is open to the underside 38 of the cleaning head 12 (to the support plane 45).

[0097] The suction opening 30 leads into the receiving chamber 58.

[0098] The suction mouth 30 is an opening in a wall 62 of the receiving space 58. This opening in the wall 62 extends in particular substantially over the entire length of the receiving space 58 parallel to the transverse direction 52.

[0099] A fluid line device 64 leads from the suction opening 30 to a connection 66 on the cleaning head 12. This connection 66, in turn, is in fluid communication with the connection 28.

[0100] The receiving space 58 is located closer to the front end 34 than to the rear end 36. In particular, it is located between the roller combination of the third roller 54, 56 and the roller combination of the first roller 48 and the second roller 50.

[0101] A drive motor 68 (Figure 5) is arranged on the cleaning head 12 for the rotational drive of the cleaning roller 60. The drive motor 68 is located, in particular, between the rear end 36 and the receiving space 58.

[0102] The drive motor 68 is in particular an electric motor.

[0103] In one embodiment, the drive motor 68 has a motor shaft 70 (see Figure 11) which has a rotation axis 72. The rotation axis 72 is parallel to the transverse direction 52.

[0104] In Figure 11, the rotation axis 72 is perpendicular to the plane of the drawing. The cleaning roller 60 has a rotation axis 74 (see, for example, Figure 5) which is parallel to the rotation axis 72 and parallel to the transverse direction 52 and perpendicular to the forward direction 42.

[0105] On the cleaning head 12 there is a holder 76 for the cleaning roller 60, by means of which the cleaning roller 60 is held in the receiving space 58.

[0106] In the exemplary embodiment of the cleaning machine 10, the holder 76 (see Figure 6) comprises a rocker arm 78 with a rod 80. The rod 80 extends in a direction parallel to the transverse direction 52. It is pivotally mounted on the cleaning head 12 via a pivot bearing 82. A pivot axis 84 of the pivot bearing 82 is parallel to the rotation axis 74 of the cleaning roller 60.

[0107] The rod 80 is positioned between the receiving space 58 and the rear end 36.

[0108] In one embodiment, the drive motor 68 is positioned between the rod 80 and the rear end 36.

[0109] The rod 80 is connected in the region of a first end of the rod 80 to a first holding element 86. At an opposite second end, it is connected to a second holding element 88. The first holding element 86 and the second holding element 88 are each connected to the rod 80 via a slotted hole connection and can thus be pivoted about the pivot axis 84 via the rod 80. Up to a certain pivoting position, the rod 80 entrains the holding elements 86, 88 in its rotation. Once this position is reached and the rod 80 rotates further, the holding elements 86, 88 no longer rotate due to the respective slotted hole connection.

[0110] The first holding element 86 and the second holding element 88 are spaced apart from one another in the transverse direction 52. In particular, the receiving space 58 is positioned between the first holding element 86 and the second holding element 88.

[0111] A spring device 90 is assigned to the rod 80 (see Figure 5), which exerts a spring force on the holding elements 86, 88 and then on the cleaning roller 60 and strives to press the cleaning roller in the direction of the installation plane 45.

[0112] In one embodiment, the spring device 90 comprises a first coil spring device 90a, which is arranged on the rod 80 and is accordingly supported on the first holding element 86. A second coil spring device 90b is supported on the second holding element 88.

[0113] In one embodiment, the first holding element 86 is designed as a passive device with respect to the rotation of the cleaning roller 60 about the rotation axis 74. In particular, a corresponding pivot bearing (pivot bearing 150; see below) is then integrated into the cleaning roller 60.

[0114] The second holding element 88 is designed as an active device via which a torque provided by the drive motor 68 is transmitted to the cleaning roller 60 for its rotation about the rotation axis 74.

[0115] A drive element 92 (see in particular Figure 6) is located on the second holding element 88, which is driven by the drive motor 68 about the rotation axis 74.

[0116] With respect to the drive train with the drive motor 68, the drive element 92 is an output element via which the torque provided by the motor shaft 70 is transmitted to the cleaning roller 60. The drive element 92 is spaced apart from the motor shaft 70 in a longitudinal direction 94. The longitudinal direction 94 is oriented perpendicular to the transverse direction 52 and extends from the rear end 36 to the front end 34. The forward travel direction 42 is parallel to the longitudinal direction 94.

[0117] A gear 96 is provided to transmit the torque from the motor shaft 70 to the drive element (output element) 92.

[0118] In one embodiment, the transmission 96 is designed so that no speed change occurs.

[0119] The motor shaft 70 is fixedly mounted on the cleaning head 12 via the drive motor 68, allowing it to pivot about the pivot axis 84. The drive element 92 (via the second holding element 88) is pivotable about the pivot axis 84 relative to the cleaning head 12 via the rocker arm 78. The gear 96 is designed to enable the corresponding movement kinematics.

[0120] The rotation axis 74 is in particular parallel to the installation plane 45.

[0121] The pivot axis 84 is in particular parallel to the installation plane 45.

[0122] In one embodiment, the transmission 96 is designed as a traction mechanism, which includes a traction mechanism 98. The traction mechanism 98 can be a chain or, as in the embodiment shown, a toothed belt 100 (see Figure 11). The traction mechanism 98 (the toothed belt 100) is guided between the motor shaft 70 and the drive element 92 and, in doing so, on corresponding profiled wheels, which are each rotationally fixedly connected to the motor shaft 70 and the drive element 92, respectively.

[0123] A deflection pulley 102 (see Figure 11) is located on the cleaning head 12, on which the traction means 98 is guided. The deflection pulley 102 can be movable or stationary. In one embodiment of a toothed belt 100, the non-profiled side of the toothed belt 100 is guided on the deflection pulley 102.

[0124] The toothed belt 100 has a bottom side 104 facing the bottom side 38 of the cleaning head 12. It has a top side 106 facing the top side 40. A circumferential toothed belt 100 is formed by the bottom side 104 and the top side 106 of the toothed belt 100.

[0125] In one embodiment, the idler pulley 102 contacts the top surface 106 of the timing belt 100.

[0126] The deflection roller 102 is positioned between the receiving space 58 and the drive motor 68 relative to the longitudinal direction 94. Relative to a height direction between the underside 38 and the top side 40 of the cleaning head 12, the deflection roller 102 is positioned above the rotation axis 74.

[0127] In particular, it is also provided that the deflection roller 102 is positioned above the rotation axis 72 of the motor shaft 70 with respect to this height axis.

[0128] In one embodiment, the drive element 92 is provided with a coupling 108 (see Figure 6), which is part of the drive element 92 or is connected in a rotationally fixed manner to the drive element 92. The coupling 108 is designed to engage in a corresponding receptacle 110 (see Figure 8) of the cleaning roller 60. The coupling 108 and the receptacle 110 are adapted to one another in such a way that a rotationally fixed coupling of the cleaning roller 60 to the second holding element 88 is present with respect to the rotation axis 74.

[0129] The drive element 92 or the coupling 108 extends laterally into the receiving space 58. The cleaning head 12 has a vertical axis 112 (see Figure 4), which is oriented perpendicular to the installation plane 45 and runs from the bottom side 38 to the top side 40. The vertical axis 112 is perpendicular to the transverse direction 52 and perpendicular to the longitudinal direction 94.

[0130] A stripping device 114 is fixedly arranged on the cleaning head 12 and is associated with the cleaning roller 60.

[0131] The stripping device 114 is positioned above the cleaning roller 60 or above the holder 76 with respect to the vertical axis 112.

[0132] In a cleaning operating mode of the cleaning machine 10 for cleaning the surface 46 to be cleaned, the wiping device 114 is spaced apart from the cleaning roller 60 or at most makes light contact with it. In principle, the wiping device 114 has no function when cleaning the surface 46 to be cleaned.

[0133] The stripping device 114 comprises a stripping bar 116. The stripping bar 116 has an edge 118. The stripping bar 116 with the edge 118 extends parallel to the transverse direction 52 and in particular parallel to the rotation axis 72. It extends transversely and in particular perpendicularly to the height axis 112.

[0134] In one embodiment, the edge 118 is linear. In principle, it can also be curved, for example, and in particular, concavely curved.

[0135] In one embodiment (Figures 2, 4, 5), the edge 118 is offset from an axis parallel to the vertical axis 112, which intersects the rotation axis 74. With respect to this offset, the edge 118 is located away from the front end 34 toward the drive motor 68. In particular, the edge 118 is not located at a vertex of the cleaning roller 60 in the receiving space 58.

[0136] In one embodiment, the scraper strip 116 is formed by a strip oriented at an acute angle 120 (Figure 4) to the vertical axis 112. This acute angle 120 is in the range of 45° in a specific embodiment.

[0137] The scraper bar 116 is made of a metallic material, for example.

[0138] The rocker 78 forms a lifting device 122, by means of which the cleaning roller 60 with its active device (see below) can be pressed against the stripping device 114 (against the stripping bar 116) during a self-cleaning operation of the cleaning machine 10, in order in particular to detach hair from the cleaning roller 60.

[0139] By pivoting about the pivot axis 84, the lifting device 122 causes a lifting in the vertical axis 112 away from the installation plane 45 in order to provide a corresponding mechanical contact between the wiper bar 116 and the cleaning roller 60.

[0140] An actuating device 124 is provided for actuating the lifting device 122. The actuating device 124 provides the necessary force or torque to lift the cleaning roller 60 via the lifting device 122.

[0141] During cleaning operation of the cleaning machine 10 for the surface 46 to be cleaned, the actuating device 124 is inactive. The spring device 90 presses the rocker arm 78, and thus the cleaning roller 60, against the surface 46 to be cleaned. The force provided by the actuating device 124 can generally be provided and initiated by an operator, or the actuating device 124 can comprise a drive, such as an electric motor, hydraulic, or pneumatic drive. In this case, an operator initiates control signals, and the "power generation" then occurs at the drive.

[0142] In one embodiment (Figures 1 to 6), the actuating device 124 comprises a foot switch 126, which is located on the cleaning head 12. The foot switch 126 is located, in particular, laterally on the cleaning head 12 in the region of the rear end 36.

[0143] The foot switch 126 is movably mounted on the cleaning head 12. It is mounted so that it can be moved or pivoted. It has an active surface 128 through which an operator can actuate the foot switch 126.

[0144] In one embodiment, the foot switch 126 is rotatably mounted on the cleaning head 12 with a rotation axis parallel to the rotation axis 74.

[0145] A spring device 130 (Figure 5) is assigned to the foot switch 126. The spring device 130 comprises, for example, one or more coil springs.

[0146] The foot switch 126 is supported downward by the spring device 130. A spring force of the spring device 130 brings the foot switch into a starting position 132, in which it does not cause the rocker arm 78 to rotate, i.e., does not actuate the lifting device 122. This is the cleaning position of the rocker arm 78 for the surface 46 to be cleaned, in which the cleaning roller 60 is spaced apart from the stripping device 114.

[0147] By pressing the active surface 128 on the foot switch 126 towards the underside 38 of the cleaning head 12, overcoming the spring force of the spring device 130 (and the spring device 90), the foot switch 126 moves.

[0148] A web 134 is arranged on the foot switch 126, which engages the rocker 78 and is in particular connected in a rotationally fixed manner to the rod 80 of the rocker 78.

[0149] The movement of the foot switch 126 toward the underside 38 of the cleaning head 12 causes the rocker 78 to pivot about the pivot axis 84 and thereby raises the cleaning roller 60 to the scraper device 114. The cleaning roller 60 is pressed against the scraper bar 116 and a self-cleaning operation of the cleaning machine 10 can be carried out.

[0150] The movement of the foot switch 126 translates into a rotation of the rod 80. This, in turn, drives the holding elements 86, 88 and thus the cleaning roller 60. When the rod 80 has reached a certain rotational position, further rotation of the holding elements 86, 88 and thus of the cleaning roller 60 is blocked due to the slotted connection of the holding elements 86, 88 to the rod 80. The rod 80 can continue to rotate (when the foot switch 126 is actuated), but the cleaning roller 60 no longer rotates. This establishes a maximum "pressure position" of the cleaning roller 60 against the stripping device 114.

[0151] This limits the force on the cleaning roller 60 when the foot switch 126 is pressed to press the cleaning roller 60 against the stripping device 114.

[0152] As soon as the operator no longer exerts force on the foot switch 126, the spring device 130 pushes the foot switch 126 into the starting position 132. The rocker 78 returns to its starting position and brings the cleaning roller 60 into its cleaning position for the surface 46 to be cleaned.

[0153] This will be explained in more detail below. A strip 136 is assigned to the receiving space 58, with the strip 136 located between the receiving space 58 and the rear end 36 (relative to the longitudinal direction 94).

[0154] The bar 136 is positioned on the underside 38 of the cleaning head 12.

[0155] In particular, it extends at least over the entire width of the receiving space 58 relative to the transverse direction 52.

[0156] The strip 136 acts on the surface 46 to be cleaned and causes a kind of closure of the receiving space 58 on the surface 46 to be cleaned towards the rear end 36.

[0157] The strip 136 is in particular designed to be elastic by means of a corresponding elastic mounting and / or by means of an elastic material.

[0158] The strip 136 closes off or defines a suction area on the surface 46 to be cleaned.

[0159] In particular, it is provided that the cleaning roller 60 is removable from the holder 76.

[0160] An embodiment of a cleaning roller 60 according to the invention (Figures 7 to 9) comprises a roller body 138. The roller body 138 extends in a longitudinal axis 140, which is coaxial with the rotation axis 72 when the cleaning roller 60 is positioned on the cleaning head 12.

[0161] The roller body 138 has a first end 142 and an opposite second end 144. A first coupling device 146 is located at the first end 142 and a second coupling device 148 is located at the second end 144. The first coupling device 146 is provided for connection to the first holding element 86 of the cleaning head 12, and the second coupling device 148 is provided for connection to the second holding element 88 of the cleaning head 12.

[0162] The first coupling device 146 and the second coupling device 148 are spaced apart from each other in the longitudinal axis 140.

[0163] The first coupling device 146 comprises a pivot bearing 150 (see Figure 3). The pivot bearing 150 is designed, in particular, as a ball bearing. A rotation axis of the pivot bearing coincides with the rotation axis 74.

[0164] The first coupling device 146 with the pivot bearing 150 is designed such that the cleaning roller 60 can be connected to the first holding element 86 in a rotationally fixed manner at the first coupling device 146. For this purpose, a connecting element 152, for example in the form of a connecting pin, is located on the front side of the first coupling device 146.

[0165] In particular, this has a shape that deviates from rotational symmetry in order to enable a rotationally fixed connection.

[0166] For example, the first holding element 86 comprises a receptacle into which the connecting element 152 can be inserted in a rotationally fixed manner.

[0167] The rotary bearing 150 then allows the roller body 138 to rotate about the rotation axis 74 against the connecting element 152.

[0168] A first conical section 154 is arranged on the first coupling device 146 relative to an outer side. The first conical section is a conical segment and accordingly has a conical section shell (conical segment shell).

[0169] An axis of symmetry of the first cone section 154 (cone axis) lies on the longitudinal axis 140 and is coaxial with the rotation axis 74. An imaginary cone tip 156 of the first cone section 154 lies on the rotation axis 74 and thereby on the roller body 138 between the first coupling device 146 and the second coupling device 148.

[0170] The first cone section 154 has a base 158. At the base 158, the first cone section 154 has its largest diameter.

[0171] The first conical section 154 tapers from the base 158 toward the second coupling device 148, i.e. tapers toward a center of the roller body 138.

[0172] In one embodiment, a base plate 160 is located in the area of ​​the base 158. The base plate 160 is shaped like a circular disk. The base plate 160 is mounted on the pivot bearing 150. The connecting element 152 is, in turn, positioned on the base plate 160 in a rotationally fixed manner.

[0173] The first cone section 154 (and the roller body 138) is rotatable relative to the base plate 160 about the rotation axis 74.

[0174] A first cone angle 162 (see Figure 7) and a first length 164 parallel to the longitudinal axis 140 of the first cone section 154 are selected to effectively transport hair away from a coupling end 166 of the cleaning roller 60 into a central region of the cleaning roller 60.

[0175] The first cone angle 162 is in particular greater than 5° and preferably greater than 7°. Furthermore, it is preferably less than 30° and in particular less than 20° and in particular less than 15°.

[0176] In a specific embodiment, the first cone angle 162 is 9°. The first length 164 along the longitudinal axis 140 preferably occupies at least 2% and in particular at least 3% of a total length of the cleaning roller 60 along the longitudinal axis 140. Preferably, the first length 164 amounts to at most 8% and in particular approximately 6% of this total length.

[0177] In a specific embodiment, the first length 164 is 6% of the total length of the cleaning roller 60.

[0178] In particular, the first length 164 is greater than 5 mm, in particular greater than 7 mm, and in particular greater than 9 mm. Preferably, the first length 164 is less than 20 mm, and in particular less than 17 mm.

[0179] In a specific embodiment, the first length 164 is 15.2 mm. In particular, the cleaning roller 60 has a total length of 25 cm.

[0180] The first cone section 154 has a smooth surface on the shell side to counteract the adhesion of hair and to fulfill a guiding function of hair away from the coupling end 166.

[0181] The first cone section 154 also forms a kind of cover or housing for the pivot bearing 150 (see Figure 3).

[0182] In particular, the first length 164 is greater than a corresponding length of the pivot bearing 150 in the longitudinal axis 140 (see Figure 3).

[0183] The second coupling device 148 serves to introduce the torque of the drive element 92 into the cleaning roller 60.

[0184] The second coupling device 148 has a receptacle 168, which serves to receive the drive element 92 or the coupling 108. A spring 170 is arranged on the receptacle 168. The spring force of the spring 170 acts parallel to the longitudinal axis 140.

[0185] The receptacle 168 is designed such that the drive element 92 or the coupling 108 can be connected in a rotationally fixed manner to the second coupling device 148 in order to introduce a corresponding torque.

[0186] A second conical section 172 is arranged on the second coupling device 148. The second conical section 172 is a truncated cone with respect to a lateral surface.

[0187] An imaginary conical tip 174 lies between the first coupling device 16 and the second coupling device 148 on the rotation axis 74. The second conical section 172 tapers from a coupling end 176 (which is opposite the coupling end 166) toward a central region of the cleaning roller 60.

[0188] The second conical section 172 has a circular base 178. The receptacle 168 is formed at the base.

[0189] A cone axis of the second cone section 172 lies on the rotation axis 74 and coincides with the cone axis of the first cone section 154.

[0190] It is again the task of the second cone section 172 to guide hair away from the coupling end 176 into a central region of the cleaning roller 60.

[0191] A second cone angle 180 is opposite in sign to the first cone angle 162. It generally has the same size range as the first cone angle 162 as explained above, since the second cone section 172 has the same function as the first cone section 154. The second cone angle 180 can be identical to the first cone angle 162 or it can be different.

[0192] The second cone section 172 has a second length 182 extending from the base 178. This is generally in the same range as the first length 164 of the first cone section 154, whereby the first length 164 and the second length 182 may be the same or different.

[0193] The second cone angle 180 is in particular greater than 5° and preferably greater than 7° and, for example, greater than 9°. Furthermore, it is preferably less than 30° and, in particular, less than 20° and, in particular, less than 15°.

[0194] In a specific embodiment, the second cone angle 180 is 12°.

[0195] The second length 182 in the longitudinal axis 140 preferably occupies at least 2% and in particular at least 3% of a total length of the cleaning roller 60 in the longitudinal axis 140. Preferably, the second length 182 amounts to at most 8% and in particular to at most 6% and in particular to at most 5% of this total length.

[0196] In a specific embodiment, the second length 182 is 4% of the total length of the cleaning roller 60.

[0197] In particular, the second length 182 is greater than 5 mm, in particular greater than 7 mm, and in particular greater than 9 mm. Preferably, the second length 182 is less than 20 mm, and in particular less than 17 mm.

[0198] In a specific embodiment, the second length is 182

[0199] 11 mm (for a cleaning roller 60 with a total length of 25 cm). The second conical section 172 forms, in particular, a type of casing or housing on the second coupling device 148.

[0200] In particular, the second cone portion 172 has a smooth surface to fulfill its guiding function for hair and to prevent hair from accumulating on the second cone portion 172.

[0201] The roller body 138 carries an action device 184 with which the cleaning roller acts mechanically on the surface 46 to be cleaned during cleaning operation.

[0202] In one embodiment, the active device 184 comprises bristles 186, which are fixed to the roller body 138, in particular in the form of bristle bundles 188.

[0203] The cleaning roller 60 is then a bristle roller. In the cleaning machine 10 as a brush vacuum, the cleaning roller 60 is a bristle roller.

[0204] In one embodiment, webs 190 are formed on the roller body 138. In particular, a plurality of webs is provided.

[0205] The webs 190 extend between end faces of the first cone section 154 and the second cone section 172 and are connected in particular to these end faces (in particular to increase mechanical stability).

[0206] The webs 190 are in particular designed such that they wind around the longitudinal axis 140 (rotation axis 74).

[0207] In one embodiment, the webs 190 are integrally connected to the roller body 138.

[0208] The bristle bundles 188 are fixed to the webs 190. The shape of the webs 190 relative to the longitudinal axis 140 defines the brush arrangement for an effective cleaning result.

[0209] In particular, it is provided that the webs 190 carry a plurality of bristle bundles 188 in relation to the direction parallel to the longitudinal axis 140, and only one bristle bundle transversely thereto.

[0210] Adjacent webs can be connected to transverse webs 192, which in particular do not carry bristle bundles, wherein such transverse webs 192 are also connected to the roller body 138. This serves to increase mechanical stability.

[0211] The first cone section 154 and the second cone section 172 border the active device 184.

[0212] The first cone section 154 and the second cone section 172 are in particular free of bristles 186.

[0213] In principle, there may be a small distance between the first conical section 154 or between the second conical section 172 and the active device 184, or they may be directly adjacent. In principle, one or more bristles 186 may also protrude slightly into the respective conical section 154 or 172 in the region of a web 190, in particular due to a bend in such a bristle 186.

[0214] It is possible for the active device 184 to additionally or alternatively comprise other impingement media than bristles 186. For example, a microfiber trim may be provided, or a combination of, for example, bristles and microfiber trim may be provided.

[0215] In one embodiment (Figure 7), the bristles 186 (relative to a jacket envelope) protrude further in a direction perpendicular to the rotation axis 74 than the conical sections 154, 172, i.e., a largest diameter of the cleaning roller 60 relative to a jacket envelope is predetermined by the action device 184. This allows for effective action on the surface 46 to be cleaned.

[0216] The cleaning roller 60 and the cleaning machine 10 function as follows:

[0217] During cleaning operation for the surface 46 to be cleaned, the foot switch 126 is in its initial position 132, i.e., inactive. The spring device 90 presses the rocker 78 and thus the cleaning roller 60 against the surface 46 to be cleaned.

[0218] The drive motor 68 causes the cleaning roller 60 to rotate about the rotation axis 74. The action device 184 acts mechanically on the surface 46 to be cleaned and loosens dirt and, if necessary, also takes dirt with it.

[0219] The receiving space 58 is subjected to negative pressure by the blower device 22, and dirt is removed accordingly; a dirt fluid flows, which may be dry (particularly in the example of a carpet brush vacuum cleaner) or may also contain liquid.

[0220] Hair is a fundamental problem with rotating cleaning rollers. Hair on the surface 46 to be cleaned, which is picked up by the cleaning roller 60, can wrap around it and then can no longer be removed.

[0221] According to the invention, the conical sections 154, 172 are provided, which are truncated cones. These have a lateral surface in the form of an inclined plane, through which hair is guided from the coupling ends 176, 166 toward the center of the cleaning roller 60. The coupling ends 166, 176, which are coupled to the holder 76 of the cleaning machine 10, are particularly sensitive elements with regard to hair, since winding in any gaps present there can also affect the rotation or the torque transmission.

[0222] The cone sections 154, 172 ensure that the amount of hair that reaches them is minimized.

[0223] In particular, it is provided that the corresponding bases 158, 178 are arranged perpendicular to the rotation axis 74 and then the cone sections 154, 172 are located as close as possible to the respective holding element 86 or 88.

[0224] The conical sections 154, 172, with their truncated cone surface, ensure targeted guidance of hair from the coupling ends 166, 176.

[0225] The cleaning machine 10 also has a self-cleaning function for hair "caught" (wound up) on the cleaning roller 60.

[0226] This is explained using Figures 10 to 13.

[0227] Figures 10 and 11 show the cleaning head 12 in the cleaning mode for the surface 46 to be cleaned. The cleaning roller 60 is lowered to a certain extent and presses against the surface 46 to be cleaned.

[0228] When an operator presses the foot switch 126 downward with appropriate force, this causes the rod 80 of the rocker arm 78 to rotate, and the cleaning roller 60 is lifted away from the surface 46 to be cleaned and from the support plane 45 (Figures 12, 13). In doing so, the operator must overcome the force of the spring device 130 and the force of the spring device 90.

[0229] In particular, a stop is provided for maximum lifting. The cleaning roller 60 is then raised at a distance 194 from the support plane 45, and in particular, the active device 184 no longer touches the surface 46 to be cleaned, on which the cleaning head 12 rests.

[0230] The active device 184 and in particular the bristles 186 are pressed against the wiping strip 116.

[0231] The lifting of the cleaning roller 60 by the lifting device 122 and actuated by the foot switch 126 takes place during rotation of the cleaning roller 60 about the rotation axis 74.

[0232] The cleaning roller 60 is lifted against the wiper bar 116 in such a way that the wiper bar rests against a portion of the bristles 186 and these are then bent accordingly until they are free again.

[0233] This allows hair (and possibly other remaining dirt) to be stripped off the cleaning roller 60 by the stripping device 114; hair (and possibly other dirt) can be removed from the cleaning roller 60 and, ideally, vacuumed away.

[0234] An operator can then interrupt the cleaning operation for the surface 46 to be cleaned as needed by actuating the foot switch 126 in order to perform a self-cleaning operation (of limited duration) of the cleaning roller 60.

[0235] The duration is determined by how long the operator presses the foot switch 126.

[0236] In principle, a sensor system can be provided that indicates to an operator, for example, when such a self-cleaning operation is necessary. The sensor system monitors, for example, the presence of hair on the cleaning roller 60, for example using optical means. In principle, the self-cleaning function can also be performed automatically as needed, in which case the actuating device 124, in particular, comprises a drive.

[0237] The cleaning roller according to the invention was described using the cleaning machine 10 designed as a brush vacuum cleaner.

[0238] The cleaning machine 10 is hand-held and is designed for a standing operator who stands on the surface 46 to be cleaned.

[0239] Figures 14 and 15 schematically show a further embodiment of a cleaning machine 196 in the form of a self-steering and self-propelled cleaning machine (cleaning robot).

[0240] This has a cleaning roller 198, which is mounted on a rocker arm 200. The basic structure is as described above. A lifting device 202 is formed by means of the rocker arm 200.

[0241] An electric motor 204 is provided as the actuating device.

[0242] A stripping device 208 is arranged on a receptacle 206 for the cleaning roller 198. During cleaning operation for a surface 46 to be cleaned, the rocker 200 is pressed against the surface 46 to be cleaned, in particular by a spring device similar to that described above. The electric motor 204 is not active (see Figure 14). The cleaning roller 198 is spaced apart from the stripping device 208. When self-cleaning of the cleaning machine 196 is performed, the electric motor 204 lifts the rocker 200 such that the cleaning roller 198 is lifted from the surface 46 to be cleaned and pressed against the stripping device 208 (Figure 15). Hair (and possibly other dirt) can then be removed from the cleaning roller 198 by the stripping device 208.The self-cleaning operation of the cleaning machine 196 can, for example, take place during the cleaning operation for the surface 46 to be cleaned by pressing the cleaning roller 198 against the scraper device 208 for a certain period of time.

[0243] This can be done, for example, in a time-controlled manner, or the degree of roller contamination can be checked by a sensor system, and then the stripping device 208 with the cleaning roller 198 can be activated as needed. It is also possible, for example, additionally or alternatively, for the corresponding self-cleaning operation to be performed at a cleaning station (not shown) after the cleaning machine 196 has approached this cleaning station, for example, to recharge a battery. In the exemplary embodiment of the cleaning machine 196, the cleaning machine itself is, in particular, the cleaning head.

[0244] List of reference symbols

[0245] Cleaning machine cleaning head housing holding rod handle

[0246] Operating device Blower device Suction hose Suction nozzle Connection Suction outlet Housing

[0247] Front end Rear end Bottom Top

[0248] Forward direction Support device Installation level Area to be cleaned First roller Second roller Cross direction Third roller Fourth roller Accommodating space Cleaning roller Wall Fluid line device Drive motor connection

[0249] Motor shaft

[0250] axis of rotation

[0251] axis of rotation

[0252] holder

[0253] swingarm

[0254] rod

[0255] swivel bearing

[0256] Swivel axis

[0257] First holding element

[0258] Second holding element

[0259] Spring device a First spiral spring device b Second spiral spring device

[0260] drive element

[0261] Longitudinal direction

[0262] Gearbox

[0263] Traction device 0 Toothed belt 2 Deflection pulley 4 Underside 6 Top side 8 Coupling 0 Receptacle 2 Height axis 4 Scraper device 6 Scraper bar 8 Edge 0 Acute angle 2 Lifting device 4 Actuating device 6 Foot switch 8 Effective surface of spring device

[0264] Starting position

[0265] web

[0266] bar

[0267] Roller body

[0268] Longitudinal axis

[0269] First end

[0270] Second ending

[0271] First coupling area

[0272] Second coupling area

[0273] Pivot bearing

[0274] connecting element

[0275] First cone section

[0276] cone tip

[0277] base

[0278] Base plate

[0279] First cone angle

[0280] First length

[0281] Coupling end

[0282] Recording

[0283] Feather

[0284] Second cone section

[0285] cone tip

[0286] Coupling end

[0287] base

[0288] Second cone angle

[0289] Second length

[0290] active device

[0291] bristles

[0292] bundle of bristles

[0293] Footbridges

[0294] Crossbar Distance Cleaning machine Cleaning roller Swing arm Lifting device Electric motor Mounting stripping area

Claims

Patent claims 1. Cleaning roller (60; 198) for a cleaning machine (10; 196), which rotates in a driven manner about a rotation axis (74) during operation of the cleaning machine (10; 196), comprising a roller body (138), an acting device (184) which is arranged on the roller body (138) and acts on a surface (46) to be cleaned during operation of the cleaning machine (10; 196), a first coupling device (146) which is arranged at a first end (142) of the roller body (138), and a second coupling device (148) which is arranged at a second end (144) of the roller body (138), wherein the at least one cleaning roller (60; 198) is connected to the cleaning machine (10; 196) via the first coupling device (146) and the second coupling device (148).196), characterized by at least one of the following: a first conical portion (154) positioned on the first coupling device (146), adjacent to the active device (184), and tapering toward the active device (184); a second conical portion (172) positioned on the second coupling device (148), adjacent to the active device (184), and tapering toward the active device (184); 2. Cleaning roller (60; 198) according to claim 1, characterized in that the first conical section (154) and / or the second conical section (172) are designed as guide elements for hair, which guide hair towards the active device (184).

3. Cleaning roller (60; 198) according to claim 1 or 2, characterized in that a cone angle (162; 180) of the first cone section (154) and / or the second cone section (172) is at least one of the following: greater than 5° and in particular greater than 7° and in particular 9° or 12°; less than 30° and in particular less than 20° and in particular less than 15°.

4. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that a length (164; 182) of the first conical section (154) and / or of the second conical section (172) in a direction parallel to the axis of rotation (74) is at least one of the following: greater than 5 mm and in particular greater than 7 mm and in particular greater than 9 mm and in particular 11 mm or 15.2 mm; less than 20 mm and in particular less than 17 mm; at least 2% and in particular at least 3% and in particular 4% or 6% of a total length of the cleaning roller 60; at most 8% and in particular at most 7% of a total length of the cleaning roller 60.

5. Cleaning roller (60; 198) according to one of the preceding claims, characterized by at least one of the following: the first conical section (154) and / or the second conical section (172) is free of active elements of the active device (184); the active device (184) extends between the first conical section (154) and the second conical section (172).

6. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that a first end of the cleaning roller (60) lies on a base (158) of the first conical section (154).

7. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that a second end of the cleaning roller (60) lies on a base (178) of the second conical section (172).

8. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that the first coupling device (146) comprises a rotary bearing (150) and in particular a ball bearing.

9. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that the second coupling device (148) comprises a receptacle (168) and / or an immersion element for coupling to a drive element (92) of the cleaning machine (10; 196).

10. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that a cone axis of the first cone section (154) and / or a cone axis of the second cone section (172) coincides with the rotation axis (74).

11. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that the first conical section (154) is positioned above the first coupling device (146) and / or the second conical section (172) is positioned above the second coupling device (148).

12. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that the active device (184) comprises bristles (186) and in particular the at least one cleaning roller (60; 198) is designed as a brush roller.

13. Cleaning roller (60; 198) according to claim 12, characterized by at least one web (190) and in particular a plurality of webs (190) on which bristles (186) are seated, wherein a web (190) extends between the first conical section (154) and the second conical section (172) and is in particular connected to the first conical section (154) and / or the second conical section (172) and in particular is connected at the end to the first conical section (154) and / or the second conical section (172).

14. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that the first conical section (154) has a first base (158) with a first envelope plane which is oriented perpendicular to the axis of rotation (74), and / or the second conical section (172) has a second base (178) with a second envelope plane which is oriented perpendicular to the axis of rotation (74).

15. Cleaning roller (60; 198) according to one of the preceding claims, characterized in that a first element (152) of the first coupling device (146) for connection to the cleaning machine (10; 196) is positioned on a first base (158) of the first conical element (154) and / or that a second element (168) of the second coupling device (148) for connection to the cleaning machine (10; 196) is positioned on a second base (178) of the second conical element (148).

16. Cleaning machine (10; 196), comprising a cleaning head (12; 196), at least one cleaning roller (60; 198) which is rotatable about a rotation axis (74) and which is seated on the cleaning head (12; 196), and a drive motor (68) for a rotational drive of the at least one cleaning roller (60; 198), characterized in that the at least one cleaning roller (60; 198) is a cleaning roller (60; 198) according to one of the preceding claims.

17. Cleaning machine (10; 196) according to claim 16, characterized by a blower device (22) which generates a suction flow which in particular acts on a surface to be cleaned (46) and / or the at least one cleaning roller (60; 198).

18. Cleaning machine (10; 196) according to the preamble of claim 16 or according to claim 16 or 17, characterized in that a lifting device (22) is arranged on the cleaning head (12; 196), by means of which the at least one cleaning roller (60; 198) can be lifted relative to a mounting plane (45) of the cleaning head (12; 196) on a surface (46) to be cleaned, that an actuating device (124) is provided for actuating the lifting device (122), and that a stripping device (114; 208) is arranged on the cleaning head (12; 196), against which the at least one cleaning roller (60; 198) can be pressed via the lifting device (122) in a self-cleaning operation.

19. Cleaning machine (10; 196) according to claim 18, characterized in that in the self-cleaning mode of the cleaning machine (10; 196) a pressing of the at least one cleaning roller (60; 198) against the stripping device (114; 208) is provided during a rotation of the at least one cleaning roller (60; 198) about the rotation axis (74).

20. Cleaning machine (10) according to claim 18 or 19, characterized in that the actuating device (124) is designed such that the force required to lift the at least one cleaning roller (60) by means of the lifting device (122) is provided by an operator.

21. Cleaning machine (10) according to claim 20, characterized in that the actuating device (124) comprises an operating element (126) for force introduction.

22. Cleaning machine (196) according to claim 18 or 19, characterized in that the actuating device (124) comprises a drive (204) for lifting the lifting device (122), which is in particular electric motor, hydraulic or pneumatic.

23. Cleaning machine (196) according to claim 22, characterized in that the actuating device (122) comprises an operating element for controlling the drive.

24. Cleaning machine (10; 196) according to one of claims 18 to 23, characterized in that the lifting device (122) comprises a rocker (78) which is arranged on the cleaning head (10; 196) so as to be pivotable about a pivot axis (84) and which holds the at least one cleaning roller (60; 198).

25. Cleaning machine (10; 196) according to claim 24, characterized in that the pivot axis (84) is oriented parallel to the rotation axis (74) of the at least one cleaning roller (60; 198).

26. Cleaning machine (10; 196) according to claim 24 or 25, characterized in that the rocker (78) is assigned a spring device (90), wherein a spring force of the spring device (90) presses the rocker (78) in the direction of a mounting plane (45) of the cleaning head (10; 196) on a surface (46) to be cleaned.

27. Cleaning machine (10; 196) according to one of claims 24 to 26, characterized in that a drive element (92) which is coupled to the at least one cleaning roller (60; 198) for the rotational drive of the at least one cleaning roller (60; 198) is located on the rocker (78), and the drive motor (68) for the at least one cleaning roller (60; 198) is positioned outside the rocker (78).

28. Cleaning machine (10; 196) according to one of claims 24 to 27, characterized in that a drive element (92), to which the at least one cleaning roller (60; 198) is coupled, is connected in a torque-effective manner to the drive motor (68) via a traction mechanism (96) with a traction means (98), and in that the traction means (98) is guided on at least one deflection roller (102).

29. Cleaning machine (10) according to one of claims 24 to 28, characterized in that the actuating device (124) is coupled to the rocker (78) and that pivoting of the rocker (78) takes place by the action of the actuating device (124).

30. Cleaning machine (10; 196) according to one of claims 18 to 29, characterized in that the stripping device (114; 208) is fixedly and in particular immovably positioned on the cleaning head (12; 196).

31. Cleaning machine (10; 196) according to one of claims 18 to 30, characterized in that the stripping device (114; 208) is positioned above the at least one cleaning roller (60; 198) on a surface to be cleaned (46) relative to a mounting plane (46) of the cleaning head (12; 196), wherein in particular the at least one cleaning roller (60; 198) is positioned between the stripping device (114; 208) and the mounting plane (46).

32. Cleaning machine (10; 196) according to one of claims 18 to 31, characterized in that the scraping device (114; 208) comprises a scraping strip (116) and in particular exactly one scraping strip (116).

33. Cleaning machine (10; 196) according to claim 32, characterized by at least one of the following: the wiping strip (116) has an edge (118); an edge (118) of the wiping strip (116) is oriented parallel to the rotation axis (74); the wiping strip (116) has an extension parallel to the rotation axis (74).

34. Cleaning machine (10; 196) according to one of claims 16 to 33, characterized by a design as a hand-guided cleaning machine (10) or by a design as a self-propelled and self-steering cleaning machine (196).

35. Cleaning machine (10) according to claim 34, characterized by a design as a carpet brush vacuum cleaner.

36. Method for cleaning a surface by means of a cleaning roller (60; 198) according to one of claims 1 to 16, wherein the cleaning roller (69; 198) rotates and picked-up hair is guided away from bearing ends of the cleaning roller (60; 198) by the first conical section (154) and / or the second conical section (172).

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