EP2806762B1 - Coupling sytem of a brush disc or a pad driving plate - Google Patents

Description

The invention relates to a coupling system comprising a coupling module and a cleaning disk. The coupling module for is arranged between a drive of a floor cleaning machine and a cleaning disk, in particular a brush disk or a pad drive disk.

From the prior art it is known to provide brush discs with coupling portions which are inserted for coupling the brush disc to a machine-side interface or a flange in an insertion axially into Einführaussparungen and by twisting and / or pressing and locking the brush disc with flange-side holding sections Reaching a fixing position come into the rear grip. The brush disc is thus placed bayonet first in the axial direction and then secured by twisting and / or pressing and snapping.

Such brushes or clutches are for example from the DE 195 05 344 C1 , of the DE 82 24 041 U1 , of the DE 93 02 184 U1 or the US 3,600,735 previously known.

From the DE 44 34 520 A1 a brush disc is known in which mushroom-like pins are provided, which serve for bayonet fixing. For this purpose, the mushroom-like pins are first axially introduced into central, expanded areas of flange-side mold slots and then rotated, so that the pins are brought by connection areas in narrower slot parts. The mushroom hats of the pins forming the coupling sections then engage behind the flange areas laterally next to the narrower slot parts. In addition, the pins are held in their position by spring means.

The FR 2 405 690 A1 discloses a system according to the preamble of claim 1, with an adapter between a brush disc and a hub of a machine shaft. The shaft hub has radially projecting driver pins, which act against the adapter side, adjustable in the radial direction jaws and drive the adapter. The adapter in turn also has driving pins, which cooperate with the brush disk and drive them rotationally. Due to the adjustment of the jaws different shaft hubs can be used.

Further brushes are off US Pat. No. 2,541,526 A1 , of the DE 42 15 802 A1 , of the US 5,645,365 A and the US 4,391,548 A previously known.

It is known that different machine manufacturers provide different machine coupling systems. Depending on the coupling system of the machine manufacturer then different cleaning discs must be obtained from the user. For coupling the disks to the machines, disk-side metallic sections are frequently provided which are required for introducing force into the torque and / or for protecting the coupling geometries in the disk. As a result, the discs are comparatively heavy and also expensive to manufacture. Furthermore, it has been found that recycling the discs is not or only partially possible, since the disc as such is often made of plastic and the coupling portions, which interact with the machine, are made of metal.

The coupling of the disc to the machine is usually done by releasably twisting and / or pressing and snapping the disc to the machine.

The present invention is based on the object to remedy the disadvantages mentioned. The disc should in particular be inexpensive to produce and also be recyclable.

This object is achieved by a coupling system with the features of claim 1. The coupling module thus serves for the arrangement between the drive of the floor cleaning machine and the cleaning disk. The coupling module provides for a machine coupling, for coupling with the machine-side, specified by the manufacturer interface, and a disc clutch, for coupling with the cleaning disk before. The disc clutch as such comprises holding portions and insertion recesses located between the holding portions, in such a way that in an insertion position disc-side coupling portions are inserted axially into the Einführaussparungen and brought into rotation by turning with the holding portions. In this case locking means are provided with which a tool-free releasable locking of the coupling module is made possible on the disc. The twisting force to release the locking of Coupling module and disc is greater than the force and in particular the twisting force to release the machine clutch. This ensures that when removing the cleaning disc from the machine, the coupling module remains on the disc. The cleaning disk together with the coupling module can be replaced in a simple and user-known manner. Only if the user wants to change the disc, for example because it is worn, it can solve the coupling module of the disc tool-free and use in a new, or a different type of detergent / different bristles having disc. If the user operates machines with different interfaces, and especially from different machine manufacturers, he can also use one and the same disk by exchanging the coupling module with different machines. This is because preferably the machine coupling of the coupling module, as already mentioned, is predetermined by the machine manufacturer. On the other hand, the disc clutch of the clutch module can always be identical, so that with a clutch module different discs can be operated. It is also advantageous that when the washer is worn only the disc without the coupling module can be disposed of. The coupling module as such can be used further.

Advantageously, it is conceivable that the machine coupling is formed by a driver ring and the disk clutch by a disk ring arranged on the driver ring. The driving ring may be made of metal, for example, and the disc ring may be made of plastic, for example. The driving ring and the disc ring can be connected to each other in particular by screws, welding, gluing, riveting, encapsulation. It is also conceivable that the driving ring and the disc ring are integrally formed, in particular made of plastic or metal.

As latching means for locking the coupling module to the disc resilient plungers and cooperating locking recesses are provided in particular in the axial or radial direction. In particular, locking lugs can be provided on the module or on the disk be, which then engage in cooperating locking recesses which are provided on the disc or on the module, or interact with these. The latching lugs or locking means may in particular be formed integrally with the coupling module.

In a further advantageous embodiment of the invention, it is provided that at least one holding section has an in the fastening position in the rear handle counter portion which comes so in operative contact during rotation of the brush disc together with a joint portion provided on the coupling portion, so that a play-free alignment of the coupling module with respect Brush disc is done. Consequently, not only the coupling module-side holding portions engage behind the disk-side coupling portions, but in addition, the holding portions on opposite portions, which come into operative contact with the disk-side joining portions, so that a play-free alignment of the coupling module with respect to the cleaning disk can be achieved. The play-free alignment is given in particular in the axial and / or radial direction. In particular, a centering of the coupling module with respect to the brush disc can be ensured. Overall, this leads to a better smoothness of the cleaning disc on the machine during operation of the machine.

Preferably, the at least one mating section and / or the at least one guide section are designed such that they engage with one another in a form-fitting manner at least in sections when the fastening layer is rotated.

The counterpart section can be provided at least on a contact section of the at least one holding section extending along the twisting direction. Direction of rotation is the direction in which the disc or the coupling module is rotated to get into the mounting position.

Advantageously, the holding section has two sections extending along the direction of rotation, on which sections which are substantially mirror-symmetrical to one another are provided. Such a design has the advantage that depending on right or left rotation of the Machine each counter section can come into engagement with the associated guide section.

As such, the counterpart section can be designed in particular as a wedge or as a wedge recess, with the wedge or the wedge recess providing two wedge surfaces enclosing an angle. A wedge recess is a wedge-complementary recess into which a wedge can engage. The median plane of the wedge angle or the wedge recess is in particular arranged so that it extends in the plane of the coupling module or perpendicular thereto. The coupling module level is the plane in which the coupling module is located. The provision of a wedge or a wedge recess has the advantage that during the transfer of the coupling module from the insertion position into the fixing position on the basis of the wedge, or the wedge recess, a centering of the coupling module can take place with respect to the disc.

Furthermore, it is conceivable that the wedge or the wedge recess has an insertion bevel, which encloses an acute angle with the coupling module plane, or a plane extending perpendicularly thereto. By such an insertion be ensured that in addition to a centering and a favorable insertion of the mating sections can be made with regard to the guide sections. In addition, it can be ensured that in the mounting position the coupling module can assume a predetermined position with respect to the disk, in particular in the axial direction.

The insertion bevel can be formed as a flat surface. It is also conceivable that the insertion beveled is spherical.

In a further embodiment of the invention, it is provided that the counterpart portion is formed as a chamfer such that the chamfer includes an acute angle γ 'on the one hand with a radial plane perpendicular to the axis of rotation of the Schelbe and, on the other hand, with an axial plane perpendicular to the radial plane and through the axis of rotation includes an obtuse angle δ '. The chamfering is thus designed such that it is not perpendicular to the radial plane nor perpendicular to the axial plane. The angle γ 'preferably has a value of 35 ° to 55 ° and is preferably in the range of 45 °. The angle δ ', preferably from a chamfering or limiting axial plane measured in the direction of rotation to chamfer, in particular has a value in the range of 95 ° to 130 ° and preferably in the range of 100 ° to 110 °.

The chamfering can be designed as such as a straight plane or slightly curved plane or slightly convex. Preferably, the chamfer has a triangular or trapezoidal contour in plan view of the chamfer, ie along its normal vector.

The provision of such a design has the advantage that, when the guide portion is complementary to the mating portion, the counter portion and the guide portion come into operative contact during rotation of the coupling module, whereby on the one hand a centering in the radial direction and / or on the other a play-free concern in axial direction can be ensured.

In another embodiment, it is conceivable that the counter portion is formed as a web or as a web recess. The web or the web recess can lie on a circular path that runs around the axis of rotation of the coupling module. The web or the web recess can be rectangular or triangular in cross-section or also bent. It is also conceivable that the cross-sectional area of the web and the web recess decreases or increases along its or their longitudinal extent in the twisting direction.

It is also advantageous if the locking means are arranged on the holding portions.

The object mentioned above is also achieved by a cleaning disk and by a coupling module of a coupling system according to the invention.

In this case, locking means for tool-free releasable locking of the disc on the coupling module can be provided on reaching the mounting position in particular on the cleaning disc.

According to the invention, the cleaning-disk-side coupling sections and associated latching means are designed such that the twisting force for releasing the latching of the coupling module and the disk is greater than the twisting force for releasing the machine coupling. This achieves, as already described above, that the cleaning disk together Clutch module can be removed from the cleaning machine without the coupling module of the cleaning disc automatically dissolves.

The cleaning-disk-side guide sections are in particular designed to be complementary to the associated coupling module-side counterpart sections.

Further details and advantageous embodiments of the invention will become apparent from the following description, with reference to which the embodiments illustrated in the figures are described and explained in detail.

• Figur 1 eine perspektivische Ansicht eines Kupplungsmoduls;
• Figur 2 einen Ausschnitt einer perspektivischen Ansicht auf eine Bürstenscheibe;
• Figuren 3 bis 5 verschiedene Ansichten von Ausschnitten der Bürstenscheibe gemäß Figur 2;
• Figuren 6 bis 8 verschiedene Ansichten von Ausschnitten des Kupplungsmoduls gemäß Figur 1;
• Figuren 9 und 10 zwei Ansichten von Teilausschnitten der Bürstenscheibe mit dem Kupplungsmodul kurz vor Erreichen der Befestigungslage;
• Figuren 11 und 12 zwei Ansichten von Teilausschnitten der Bürstenscheibe und des Kupplungsmoduls bei Erreichen der Befestigungslage;
• Figur 13 eine perspektivische Ansicht eines Kupplungsmoduls einer weiteren Ausführungsform;
• Figur 14 eine perspektivische Ansicht einer Bürstenscheibe zur Anordnung an dem Kupplungsmodul gemäß Figur 13;
• Figur 15a ein weiteres erfindungsgemäßes Kupplungsmodul;
• Figur 15b ein weiteres erfindungsgemäßes Kupplungsmodul;
• Figur 15c einen Scheibenring eines Kupplungsmoduls und eine Bürstenscheibe gemäß einer weiteren Ausführungsform;
• Figur 16 eine vergrößerte Darstellung des Scheibenrings gemäß Figur 15c;
• Figur 17 einen Ausschnitt eines Halteabschnitts gemäß Figur 16;
• Figur 18 einen Ausschnitt der Bürstenscheibe gemäß Figur 15c;
• Figur 19 einen Ausschnitt eines Kupplungsabschnitts gemäß Figur 18;
• Figur 20 einen Ausschnitt der Kupplungsscheibe mit dem Scheibenring gem. Figur 15c in der Einführlage;
• Figur 21 die Einführlage gemäß Figur 20 im Teilschnitt;
• Figur 22 den Ausschnitt gemäß Figur 20 in der Befestigungslage;
• Figur 23 den Ausschnitt gemäß Figur 22 mit teils verdeckten Kanten.

Show it:

• FIG. 1 a perspective view of a coupling module;
• FIG. 2 a detail of a perspective view of a brush disc;
• FIGS. 3 to 5 different views of sections of the brush disc according to FIG. 2 ;
• FIGS. 6 to 8 different views of sections of the coupling module according to FIG. 1 ;
• Figures 9 and 10 two views of partial sections of the brush disc with the coupling module shortly before reaching the mounting position;
• FIGS. 11 and 12 two views of partial sections of the brush disc and the coupling module upon reaching the mounting position;
• FIG. 13 a perspective view of a coupling module of another embodiment;
• FIG. 14 a perspective view of a brush disc for placement on the coupling module according to FIG. 13 ;
• FIG. 15a another coupling module according to the invention;
• FIG. 15b another coupling module according to the invention;
• FIG. 15c a disc ring of a clutch module and a brush disc according to another embodiment;
• FIG. 16 an enlarged view of the disc ring according to FIG. 15c ;
• FIG. 17 a section of a holding section according to FIG. 16 ;
• FIG. 18 a section of the brush disc according to FIG. 15c ;
• FIG. 19 a section of a coupling portion according to FIG. 18 ;
• FIG. 20 a section of the clutch disc with the disc ring gem. FIG. 15c in the introductory situation;
• FIG. 21 the insertion position according to FIG. 20 in partial section;
• FIG. 22 the clipping according to FIG. 20 in the attachment position;
• FIG. 23 the clipping according to FIG. 22 with partly hidden edges.

In the FIG. 1 a coupling module 10 of a floor cleaning machine is shown, to which a cleaning disk and in particular a brush disk 12, as shown in FIG FIG. 2 is shown in sections, can be arranged.

The coupling module 10 has on its upper side a machine coupling 11 corresponding to the cleaning machine and on its underside a disk clutch 13 corresponding to the cleaning disk 12. The engine clutch 11 is in the embodiment according to FIG. 1 and also after FIG. 13 formed by three upwardly projecting mushroom-headed pin 15, the Rotary coupling with a machine-side, provided by the machine manufacturer interface are provided. In the FIGS. 15a and 15 b, other coupling modules 48, 50 are shown with other machine couplings 11 for other machine manufacturer specified interfaces.

The disc clutch 13 provides protruding holding portions 14 in the radial direction.

The brush disc 12 provides a central receptacle 16 into which the coupling module 10 can be inserted in the axial direction. On the brush disc 12 radially outwardly projecting coupling portions 18 are provided. When joining the brush disk 12 with the coupling module 10, these coupling portions 18 are brought into insertion recesses 20 located between the holding portions 14. Subsequently, the brush disk 12 is rotated relative to the coupling module 10, so that the coupling portions 18 engage behind the holding portions 14 at least in sections.

As in particular from the FIGS. 3, 4 and 5 becomes clear, the coupling portions 18 guide portions in the form of wedges 22. As in particular from FIG. 5 becomes clear, the wedges 22 on a wedge angle α enclosing wedge surfaces 23 which are perpendicular to the formed of the brush disk 12 brush disk plane 27, the FIG. 4 is indicated, run. The wedges 22 are provided on the transverse to the direction of rotation 24 side of the coupling portions 18.

As in particular from FIG. 4 becomes clear, the wedges 22 an insertion bevel 26, which includes the brush disc plane 27 an acute angle β.

The insertion bevel 26 as such is designed as a straight plane. However, it is also conceivable that the insertion bevel may be spherical.

Complementary to the wedges 21 are provided on the coupling module 10, or at the holding portions 14, counter portions which are formed as wedge recesses 28. The wedges 22 the coupling portions 18 come, as in the FIGS. 11 and 12 shown, in the mounting position in engagement, that is in operative contact with the wedge recesses 28 formed as opposed portions of the coupling module 10th

The wedge recesses 28 also have a wedge-angle enclosing wedge surfaces 30, which in particular in FIG. 8 are clearly visible and extend perpendicular to the coupling module level 38. The wedge recesses 28 also have an attachment bevel 32 running parallel to the insertion bevel 26.

Like from the FIGS. 2 to 5 becomes clear, each coupling portion 18 provides two on the opposite, provided transversely to the direction of rotation sides provided guide portions in the form of the wedges 22 before. In addition, looks - as from the FIGS. 1 . 6 to 8 becomes clear - each coupling module-side holding portion 14 according to two mutually opposite, mirror-symmetrical to each other formed counter sections in the form of the wedge recesses 28 before.

When joining the disc 12 with the coupling module 10, the coupling portions 18 are consequently introduced into the insertion recesses 22, as already described. Depending on the direction in which the disk 12 and the coupling module 10 is rotated, come facing wedges 21 and wedge recesses 28 in operative contact. The holding portions 14 in this case provide substantially rearward engagement surfaces 34 which extend substantially perpendicular to the axis of rotation of the coupling module 10 and which engage with coupling portion side, likewise essentially perpendicular to the axis of rotation of the disk 10, during rotation of the disk 12 or of the coupling module 10 out of the insertion position into the fastening position interact. In FIGS. 9 and 10 this liner is shown.

In the attachment position, the in FIGS. 11 and 12 is shown, the wedges 22 engage in the wedge recesses 28 and the insertion bevels 26 come to the Anlageschrägen 32 for concern.

By engaging the wedges 22 with the wedge recesses 28th For example, the disk 12 can occupy a positionally accurate position with respect to the coupling module 10 and, in particular, centering of the disk 12 on the coupling module 10 can be provided. By the interaction of the chamfers 26 with the Anlageschrägen 32 ensures that no axial play between the brush plate 12 and the clutch module 10 is provided and also can be ensured that the brush disc 12 assumes a predetermined, in particular also play-free position in the axial direction.

In order to ensure that the brush disk 12 remains in the fastening position, locking means interacting with one another are provided on the coupling module 10 or on the brush disk 12. On the coupling module 10 are latching means in the form of downwardly projecting in the axial direction and in particular in the axial direction resilient yielding lugs 41, in particular in the FIGS. 6 and 7 are to be recognized provided. The detents 41 sit on a resilient portion 41 a in the axial direction, which is limited to elastic compliance on the radially inner and radially outer side of slot-like material breakthroughs 41 b. The locking lugs 41 act with provided on the disc 12 locking means in the form of locking recesses 43 a, 43 b, the particular in the Figures 2 and 3 to be recognized, together. In the insertion position, the latching lugs 41 enter the latching recesses 43a; by rotation in the mounting position, the locking lugs 41 slide over in the radial direction extending locking webs 43c in the locking recesses 43b. The twisting force M1 for releasing the locking of the clutch module 10 and the disk 12 is greater than the twisting force M2 for releasing the clutch module 10 from the engine clutch; it therefore applies: M1> M2. This ensures that when removing the cleaning disc from the machine, the coupling module remains on the disc.

The embodiment according to FIGS. 13 and 14 is different from the one in the FIGS. 1 to 12 shown embodiment in that the brush-disc-side guide portions are not formed as wedges are but as grooves 40 and that the coupling module side mating sections are not formed as wedge recesses, but as webs 42. In the FIGS. 13 and 14 are the FIGS. 1 to 12 corresponding components provided with corresponding reference numerals.

That in the FIG. 13 Coupling module 44 shown has at the rear grip surfaces 34 of the holding portions 14, the webs 42, which lie in plan view on a lying about the axis of rotation of the clutch module 44 line. The webs 42 as such extend in the axial direction away from the rear grip surfaces 34. The webs 42 are slightly conical in cross section.

From the FIG. 14 showing the brush disc 46, it is clear that the coupling portions 18 provide in their rear grip surfaces 36 web recesses 40 which are complementary to the webs 42 are formed. When the coupling module 44 or the brush disk 46 is rotated out of the insertion position into the fastening position, the webs 42 come into operative contact with the web recesses 40.

Also in the in the FIGS. 13 and 14 In the embodiment shown, insertion chamfers 26 are provided on the coupling sections 18. At the coupling module 44 associated Anlageschrägen 32 are provided. In the attachment position, the insertion bevels 26 act against the abutment slopes 32.

In the in the FIGS. 15 to 23 In the embodiments shown, the brush-side guide sections and the mating module-side mating sections are designed as inclined chamfers 62, which are described in more detail below. In these embodiments, components already described above are provided with corresponding reference numerals.

In the FIGS. 15a and 15b Two different coupling modules 48 and 50 are shown. The coupling module 48 is integrally formed and is in particular made of plastic. On its upper side, a machine coupling 11 is provided for connection to a machine interface. In the radially outer, lower region of the disc clutch 13 with radially projecting holding portions 14th intended.

The coupling module 50 after FIG. 15b is essentially formed in two parts and has as a machine coupling 11 a driving ring 54 and a disk clutch 13 a secured by means of screws 56 on the driving ring 54 disc ring 56. The driving ring 54 is in particular made of metal; the disc ring 56 in particular made of plastic. In the radially outer, lower portion of the disc ring 56 projecting radially outwardly holding portions 14 are provided which correspond to the in FIG. 15a shown holding portions 14 of the module 48 correspond.

The following does not deal in detail with the geometry and mode of operation of the different machine clutches 11; These are specified by the machine manufacturer.

The FIG. 15c shows the disc ring 56 of the coupling module 50 with associated brush disc 52. The comments made below to the 15c to 23 applies correspondingly for the disc clutch 13 of the in FIG. 15a shown module 48, since the associated holding portions corresponding to the holding portions of the disc ring 56 of the module 50.

On disc ring 56 projecting radially outward holding portions 14 are arranged. In the receptacle 16 of the brush disc 52 radially inwardly projecting coupling portions 18 are provided. When guiding the brush disk 52 with the disk ring 56, these coupling portions 18 are brought into insertion recesses 20 located between the holding portions 14. Then, as already for FIG. 1 explained, the brush disc 52 is rotated relative to the disc ring 56 so that the coupling portions 18 engage behind the holding portions 14 at least in sections.

As in particular from FIG. 16 , and also FIG. 17 , It is clear, guide portions in the form of obliquely extending chamfers 62 are provided on the holding portions. As from the magnification according to FIG. 17 becomes clear, includes the chamfer 62 shown there with a plane perpendicular to the axis of rotation radial plane, in the FIG. 17 indicated by the reference 64, an acute angle γ. Furthermore, the chamfer 62 closes with a perpendicular to the Radial plane 64 standing and the axis of rotation intersecting axial plane 66 an obtuse angle δ a. In the FIG. 17 the direction of rotation facing end face 68 of the holding portion 14 in such an axial plane 66. Advantageously, the angle γ in the range of 45 ° and the angle δ in the range of 100 °.

From the FIGS. 18 and 19 It is clear that the brush disc 52 at its coupling portions 18 to the chamfers 62 complementary trained guide sections, also in the form of chamfers 72, has. As from the magnification according to FIG. 19 becomes clear, close these chamfers 72 with a plane perpendicular to the axis of rotation radial plane an acute angle γ 'and with a perpendicular to the radial plane and the axis of rotation intersecting axial plane an obtuse angle δ' a. In the FIG. 19 the portion of the coupling portion 74 adjoining the chamfer 72 is located in such a radial plane. Furthermore, the section 76 adjoining the coupling section 18 lies in such an axial plane. The angle γ 'is preferably in the range of 45 °. The angle δ 'is preferably in the range of 100 °.

Characterized in that the chamfers 62 and 72 are arranged perpendicular to the intersecting radial planes nor perpendicular to the axial planes intersecting them, and in that the chamfers 62 and 72 are arranged in the attachment position in operative contact substantially parallel to each other adjacent, can when rotating the brush disc in the mounting position for a centering in the radial direction and on the other hand a playless abutment in the axial direction can be achieved.

In FIG. 20 the insertion position is shown. From the partial section according to FIG. 21 It is apparent that the holding portion 14 is disposed between two brush-disc-side coupling portions 18. In FIG. 22 the brush disk 52 is in the mounting position. Out FIG. 23 It is clear that the chamfers 62 and 72 are in this position parallel to each other extending, that are in operative contact with each other.

Like from the FIGS. 15a, 15b . 15c and 16 becomes clear are on the coupling module 48, 50 and the disc ring 56 locking means in the form of radially outwardly projecting and resiliently yielding in the radial direction locking lugs 41 are provided. The locking lugs 41 are seated in the radial direction yielding thin-walled portions 41 a, which are limited to the elastic compliance on the radially inner side of a Materialausssparung 41 b (see Fig. 16 ). The locking lugs 41 act with provided on the disc 12 locking means in the form of locking recesses 43 a, 43 b, the particular in the FIGS. 15c and 18 to be recognized, together. In the insertion position, the latching lugs 41 enter the latching recesses 43a; by rotation in the mounting position, the locking lugs 41 slide over in the axial direction extending locking webs 43c in the locking recesses 43b. The twisting force M1 for releasing the latching of the clutch module 48, 50 or disc ring 56 and disc 12 is greater than the twisting force M2 for releasing the clutch module 50 from the engine clutch; it therefore applies: M1> M2. This ensures that when removing the cleaning disc from the machine, the coupling module remains on the disc.

The coupling modules 10, 44, 48 and / or 50 shown in the figures are coupling modules detachably arranged on the machine. The coupling modules are arranged by means of releasable attachment types, in particular by rotation, on the machine, or at the interface.

The invention is not limited to the guide sections shown in the embodiments and associated counter sections in the form of wedges and associated wedge recesses or webs and associated web recesses or chamfers each other accordingly. Other sections that cause a corresponding function are also detected according to the invention.

In addition, it does not necessarily have to be provided that the mating sections are designed to be complementary to the guide sections. It is crucial that the guide sections with the counterparts come into operative contact.

Claims (11)

1. A coupling system, including a coupling module (10, 44, 48, 50) and a cleaning disk (12, 46, 52), in particular a brush disk or a pad drive plate,
   wherein the coupling module (10, 44, 48, 50) is provided for placement between a drive of a floor cleaning machine and the cleaning disk (12, 46, 52),
   wherein the coupling module (10, 44, 48, 50) has a machine coupling (11) corresponding to the machine and releasable from the machine by rotation and
   has a disk coupling (13), corresponding to the cleaning disk (12, 46, 52) and releasable by rotation, and
   wherein the disk coupling (13) has retaining portions (14) and insertion recesses (20) located between the retaining portions, such that in an insertion position, coupling portions (18) on the side toward the disk can be introduced axially into the insertion recesses (20) and can be brought into engagement from behind with the retaining portions (14) by rotation,
   wherein detent means (41, 43) for releasable latching of the coupling module (10, 44, 48, 50) to the cleaning disk (12, 46, 52) upon rotation and attainment of a fastening position are provided,
   characterized in that the detent means (41, 43) on the coupling module (10, 44, 48, 50) and/or on the cleaning disk (12, 52) are formed as axially or radially resiliently yielding detent lugs (41) and on the cleaning disk (12, 52) and/or on the coupling module (10, 44, 48, 50) are formed as detent recesses (43) cooperating with the lugs, and
   that the detent means (41, 43) are embodied in such a way that when the coupling module (10, 44, 48, 50) is located on the machine and the cleaning disk (12, 46, 52) is located on the coupling module (10, 44, 48, 50), the rotary force (M1) for undoing the latching of the coupling module (10, 44, 48, 50) and the disk (12, 52) is greater than the force for releasing the coupling module (10) from the machine coupling (11), so that upon removal of the cleaning disk (12, 46, 52) from the machine, the coupling module (10, 44, 48, 50) remains on the cleaning disk (12, 46, 52).
2. The coupling system of claim 1, characterized in that the machine coupling (11) is formed by a slaving ring (54), and the disk coupling (13) is formed by a disk ring (56) located on the slaving ring (54).
3. The coupling system of claim 1 or 2 or, characterized in that at least one retaining portion (14) has a counterpart portion (28, 42, 62) that is in engagement from behind in the fastening position and that upon rotation of the cleaning disk (12, 46, 52) comes into operative contact with a joining portion (22, 40, 72), provided on the coupling portion (18), in such a way that a play-free alignment of the coupling module (10, 44, 48, 50) relative to the cleaning disk (12, 46, 52) is effected.
4. The coupling system of claim 3, characterized in that the counterpart portion (28, 42, 62) is provided on at least one coupling portion, extending in the rotary direction (24), of the at least one retaining portion (18).
5. The coupling system of claim 3 or 4, characterized in that the retaining portion (14) has two portions extending in the rotary direction (24), on which portions counterpart portions (28, 42, 62) embodied essentially mirror-symmetrically to one another are provided.
6. The coupling system of claim 3, 4 or 5, characterized in that the counterpart portion is embodied as a wedge or as a wedge recess (28), and the wedge or wedge recess provides two wedge faces that form a wedge angle (α).
7. The coupling system of claim 6, characterized in that the wedge or the wedge recess (28) has an insertion chamfer (26), which forms an acute angle (β) with the coupling module plane (27) or with a plane extending perpendicular thereto.
8. The coupling system of one of claims 3 through 7, characterized in that the counterpart portion is embodied as a chamfer (62) in such a way, wherein the chamfer (62) on the one hand forms an acute angle γ with a radial plane extending perpendicular to the rotary axis of the coupling module, and on the other forms an obtuse angle δ with an axial plane extending perpendicular to the radial plane and through the rotary axis.
9. The coupling system of claim 8, characterized in that the angle γ is in the range from 35° to 55° and preferably in the range from 40° to 50°, and/or that the angle δ is in the range from 95° to 150° and preferably in the range from 100° to 110°.
10. The coupling system of one of claims 3 through 9, characterized in that the counterpart portion is embodied as a fin (28) or as a fin recess.
11. The coupling system of one of claims 1 through 10, characterized in that the detent means (41, 43) are located on the retaining portions (14).

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