EP1338235B1 - Plurality of floor care discs for a floor care apparatus - Google Patents

Description

The invention relates to a plurality of care discs for a floor care appliance according to the features of the preamble of claim 1.

Floor care appliances in which such a plurality of care slices are used are known, for example, in the form of a rinsing appliance from DE-OS 43 40 367. In this embodiment, individual carrier discs are each assigned a care insert in the form of a pelvis by means of a clip connection, which clip connection is formed reversible. There are also known care pads, which are fastened via Velcro fasteners on carrier discs. In this case, the replacement of care pads proves to be very time-consuming and unhygienic, since when removing the pads, the user comes into contact with the soiled surfaces.

The state of the art should also be referred to EP 0361505 A2. From this document, a care disc is known, which is supported on a care disc holder by means of a Velcro connection.

GB-A-1115659 discloses a plurality of care discs supported on a floor care device

Starting from the initially mentioned prior art, the invention is concerned with the task of specifying a plurality of care discs, which is easy and advantageous to replace.

This object is achieved in the subject matter of claim 1.

So far, for a change of care wipes, for example, to change the task or wear of the care pads a decrease of all care discs individually by hand necessary. This is associated with a high set-up effort. For care equipment with several bristled care discs increased the device receiving power drastically when after a replacement of the maintenance slices these rotate by confusion against their preferred direction ie against the line of the bristles, which adjusts itself by permanent deformation during operation, causing a risk of overloading. According to the invention, these disadvantages are counteracted by the formation of an exchange set. The care slices are recorded preconfigured in a holder, so that the user can replace all care discs in a single operation or, in a recording of both sides occupied nursing discs can perform a change of the lining sides. In particular, in the latter case, therefore, not different types of covering can be used. There are a plurality of maintenance slices operatively not included in the holder. The holder with the recorded care discs is provided preconfigured to the user.

Frequently used pad types of a care disc, for example for cleaning and polishing or cleaning and soft cleaning, can be integrated in only one care disc. By simply turning the care disc by 180 °, the corresponding pad type is used. Next, in a design of a care disc with the same care cover on both sides, a doubling of the service life of the care disc given. For use on both sides, the holder has a device for attachment to the floor care device, which is also usable on both sides. Thus, as mentioned in the prior art, a clip connection may be provided, wherein device-side Klipszungen engage in a, based on the thickness of the care fabric, central receptacle for driving the care disc. Here, the nursing disk driving or supporting axis is selected to be larger in length than half the nursing mat thickness including care. In a preferred embodiment of the subject invention, it is provided that the care disc on both sides of a substantially centrally formed Has Stützausformung for support in the floor care device, said Stützausformung is sunk against a care surface. For example, in the case of floor care appliances with several care discs, three care discs, it is possible for each individual care disc to be driven via a drive shaft. However, it is provided that only a care disc is driven by a drive shaft and this, for example. Via friction by means of a, as known from the prior art ring rubber surface directly or indirectly drives the other care discs. The Stützausformung invention of the care disc serves both to support the care disc on a drive shaft and on a centering shaft for the not directly driven care discs. Thus, even with an embodiment of a floor care appliance with several care slices, it is possible to exchange them with one another on account of their identical design. This has the further advantage that the user does not have to pay attention to a specific assignment of the care discs to the individual waves when equipping the device with the care discs. The arrangement of the care discs on the floor care device is not contrary to the known prior art by means of locking or the like, but here it is rather so that the care discs on both sides, for example, have a hemispherical, axially arranged Stützausformung, in which the respective, correspondingly frontally shaped shaft entry. The floor care device is based on the care discs, whereby alone the latter are securely supported at least in their radial direction. As a result, that no fasteners or the like, for example, must be opened, a slight change of care plates or turning the same is given. The centrally formed Stützausformung can also be used in nursing discs with one-sided care pad, the Stützausformung on the nursing pad opposite side of the care disc is formed. The drive of the care disc or when using multiple care discs of a care disc is achieved in that are assigned to the Stützausformung opposite abutment for a drive shaft of the floor care device. These abutments, which preferably point radially outward from the support formation, are acted upon by corresponding drive fingers of the drive shaft for entrainment of the care disc. In order to achieve an easy locating of the drive and centering when inserting the care disc in the ground care device, it is provided that in the axial direction of the device side upstream of the Stützausformung a centering or insertion is formed. Thus, in the area of the care hub, which has the Stützausformung and the opposite abutment, a spherical or conical contour to form the centering or insertion recesses provided, so that even with a large axial offset of drive shaft or centering shaft and care hub a self-discovery or Self-centering is guaranteed. This also occurs with non-parallel axes. In a further development of the subject invention it is provided that the abutment is formed freestanding in the circumferential direction. Here, for example, a training may be selected in which the abutment is web-like formed radially outwardly from the Stützausformung on the hub. In order to ensure a hygienic improved care plate change, it is provided that are formed between the abutments substantially in the circumferential direction extending through openings. It is thus formed an easy-to-grip and recognizable handling area, which ensures easy and hygienic handling of the care discs in a change or a turn. It proves to be advantageous that a care disc has a peripheral toothing. For this purpose, it is further proposed that a driven care disc via a toothing the drives further care discs. This training can be dispensed with on the drive side to an additional transfer case. In this case, a direct drive of the further care discs by the driven care disc is preferred. However, it is also conceivable to drive one or more care discs indirectly with the interposition of an immediately driven care disc. In an advantageous development of the subject invention is provided that coaxially to the Stützausformung on the care disc a circumferential pivot bearing is formed for rotatably receiving the care disc in a possibly separate from the floor care device holder. This circumferential pivot bearing can, for example, in the form of a Stützausformung and possibly the abutment encompassing, circular in cross-section hollow cylinder may be formed with endseitigem radial collar. In an advantageous embodiment of the subject invention, it is provided that the holder is formed star-shaped. For this purpose, an open support structure is selected in which a carrier connects the care discs in the region of their hubs with each other, without enclosing the care discs. It proves to be advantageous in this case that on the holder in each case assigned to a central region of a care disc, a circumferential rotary holder is formed. For this purpose, it is further proposed that the circumferential rotary holder is form-fitting connected to a circumferential pivot bearing of the maintenance disc. Each care provided with a circumferential pivot bearing plate is preferably end of each support arm of the star-shaped support rotatably formschlussgehaltert in the peripheral rotational support formed there and not operationally solvable. Holder and care discs form a unit, wherein the configuration of the star-shaped holder is preferably selected so that its circumferential rotation brackets are positioned according to the arrangement of drive and centering. In a holder of end provided with care pads care discs this case an asymmetry be given, which further specifies the assignment of a specially molded drive-maintenance disc. Due to the uniformity of the user can not confuse the driven maintenance disc with a non-drivable care disc. It proves to be advantageous that the circumferential rotary support is annular in cross-section, with a passage opening, in which the circumferential pivot bearing of a care disc is added. For this purpose, for example, the circumferential rotary holder inside wall having an annular groove, in which a correspondingly shaped annular bead of the circumferential pivot bearing of the maintenance disc occurs. It is further proposed that the holder has a central positive connection for attachment in the floor care appliance. This positive connection can be formed, for example, in the form of a plug connection. Thus, the user by simply plugging the care plates carrying holder allows easy placement of the care slices. By appropriate bottom cutouts of the device, the user can be given an insertion or insertion aid for correct alignment of the holder. Furthermore, by such a design, a self-finding of the form-locking connection for fastening the holder in the floor care appliance can also be provided. In an alternative embodiment of the subject invention, it is provided that the holder is designed as a removable cassette in which several care discs are supported randumgriffen. It is provided that a care disc is supported in the removable cassette with a vertical gap. This game is in a preferred embodiment about 0.25 to 0.5 times the thickness of the carrier plate, ie the thickness of the maintenance disc minus the Pflegebelagsdicke. It is further proposed that the care disc is supported in the removable cassette with horizontal play. The extent of this horizontal play here is, for example, about 0.5 to 1 times the amount of carrier sheet thickness. According to the invention It is envisaged that in the removable cassette each care disc is bordered by edges. This has the advantage in each care disc with a peripheral toothing of the type already mentioned that this peripheral toothing is held in a hidden position. Further, each care disc is securely received in the holder by this configuration, without being fixed by separate holding means. Regarding the attachment of the removable cassette is proposed that this formschlussgehaltert is on the floor care device. Here, for example, a simple clip holder can be used. When using care disks for use on both sides, in particular as described above, it is advantageously provided that the interchangeable cassette can be held on both sides in the floor care device to form two, substantially identically shaped outsides. It is thus formed a turn-change, in which the care discs are arranged captive and prepositioned. The turning of the exchangeable cassette preferably takes place about an axis of symmetry which, for example, is determined by the position of force transmission points by tooth engagement or friction surface. Again, the reversible cassette surrounds only the edge regions of the care discs. The area of the nursing care remains free to ensure bilateral use. When using one-sided occupied care discs, the removable cassette is preferably closed on the opposite sides of the care sheets except for the hub area of the individual care discs for coupling the same formed on the device. For all variants of the holder is that the holder is coupled by positive engagement with the floor care device, the connection to the drive unit is made. As a result, the, the care discs receiving holder, in particular the removable cassette from the device weight remains unaffected. The weight of the device is supported by the hubs of the care discs. Wide is provided that the holder has design or constructive features that a clear insertion of the To facilitate mounting and to exclude incorrect operation. A solution for this purpose may be corresponding color markings or form-locking elements on the floor care appliance and holder, which must be brought into conformity in a corresponding counter marking. Furthermore, the use of care discs with a substantially centrally formed support formation for support in the floor care appliance of the type already described proves to be advantageous. In this way, the care slices are prepositioned by the holder, for example by the interchangeable cassette, so that they are displaceable by a defined clearance, however are not interchangeable with each other, wherein further the hubs by one of the Stützausformung device side upstream centering or insertion automatically find the associated drive or centering shaft. There are further advantages. So the care discs are captively connected to each other and at the same time changeable or reversible. Next, the clearance in the device housing is significantly larger than the outer diameter of the work surface in particular bristled care discs, the disc edge areas are still largely covered. It results in handling advantages by simultaneously turning the care discs. Furthermore, the storage of the care discs is secured, since no care discs can be lost. In addition, there is the possibility of wall suspension, etc. As particularly advantageous is the protection against incorrect operation, ie unauthorized disc combination, for example, two buffing wheels combined with a polishing pad given. Furthermore, the direction of rotation of the care discs is always the same. Due to creep effects, the bristles exhibit a permanent deformation after long operation - tangential skew. If the care disc inserted incorrectly and operated against the bristle, resulting in higher moments. The mounting solution, for example, in the form of a reversible cassette avoids incorrect insertion of the discs Next is a combination of different writing sizes possible. It is also conceivable that the different functions can be visualized by printing and / or color design of the holder. If bristled care discs are inserted against the so-called stroke of the bristles in the device, then a clearing is required, which is significantly larger than the outer bristle rim, to avoid collision, as soon as the customer makes a disc change. Therefore, the edge portion of the maintenance slices can not be covered by the device part that contains the franking. Nevertheless, the cassette solution allows the greatest possible coverage of the nursing edge area, since a one-time assembly in the production of bristled care discs with smaller clearance in the cassette is possible. The cassette closes the larger device-side franking. In particular, with externally toothed care discs so a higher operator protection is connected. At the same time the teeth are protected from spin-on stones, etc., so they can not be wedged in the toothing. Using toothed care discs they are always arranged in the holder in a fixed orientation about the rotation axis to each other. This allows the use of asymmetric care pads, eg Egyptian pad forms, whereby a reduction of the unprocessed edge strip can be achieved.

Fig. 1

eine Unteransicht eines erfindungsgemäßen Bodenpflegegerätes in Form eines Bohnergerätes;

Fig. 2

einen Querschnitt durch eine, mit auf beiden Seiten mit einem Pflegebelag versehene Pflegescheibe;

Fig. 3

die Pflegescheibe in einer perspektivischen Darstellung;

Fig. 4

die Unteransicht des Bodenpflegegerätes in einer weiteren Ausführungsform, in welcher Pflegescheiben in einer Wechselkassette angeordnet sind;

Fig. 5

den Schnitt gemäss der Linie V-V in Fig. 4;

Fig. 6

eine der Fig. 5 entsprechende Schnittdarstellung, jedoch bei Verwendung von nur einseitig mit einem Pflegebelag versehenen Pflegescheiben;

Fig. 7

eine perspektivische Explosionsdarstellung von Wechselkassette und Pflegescheiben, wobei eine Pflegescheibe in einer Schnittdarstellung wiedergegeben ist;

Fig. 8

eine Unteransicht gemäss der Fig. 4, jedoch eine weitere Ausführungsform betreffend;

Fig. 9

den Schnitt gemäss der Linie IX-IX in Fig. 8;

Fig. 10

eine perspektivische Explosionsdarstellung einer Halterung und der dieser zugeordneten Pflegescheiben;

Fig. 11

eine perspektivische, partiell geschnittene Einzeldarstellung einer Antriebskupplung des Bodenpflegegerätes;

Fig. 12

eine perspektivische Darstellung eines Mitnehmertellers und eines Stützfingers der Antriebskupplung aus Fig. 11;

Fig. 13

eine schematische Darstellung des Steckverbindungsbereiches zwischen Stützfinger und Nabe einer Pflegescheibe;

Fig. 14

eine weitere perspektivische Darstellung, eine alternative Ausgestaltung der Stütz- und Mitnehmerausbildung;

Fig. 15

eine Seitenansicht des Bodenpflegegerätes in einer weiteren Ausgestaltung, mit einer abklappbaren, die Pflegescheiben aufnehmenden Bodenplatte, welch letztere geschnitten dargestellt ist, in einer Betriebsstellung;

Fig. 16

eine der Fig. 15 entsprechende Darstellung, jedoch im Zuge eines Anhebens des Bodenpflegegerätes;

Fig. 17

eine der Fig. 15 entsprechende Darstellung, jedoch im Zuge einer Entriegelung der Bodenplatte;

Fig. 18

eine Folgedarstellung der Fig. 17 bei abgeschwenktem Gehäuseoberteil zur Bodenplatte, zur Freilegung der in dieser einliegenden Pflegescheiben;

The invention with reference to the accompanying drawings, which, however, only illustrates several embodiments, explained in more detail. It shows:

Fig. 1

a bottom view of a floor care device according to the invention in the form of a Rainer;

Fig. 2

a cross section through a, provided on both sides with a care pad care disk;

Fig. 3

the care disc in a perspective view;

Fig. 4

the bottom view of the floor care device in a further embodiment, in which care discs are arranged in a removable cassette;

Fig. 5

the section along the line VV in Fig. 4;

Fig. 6

one of Figure 5 corresponding sectional view, however, when using only one side provided with a care pad care discs.

Fig. 7

an exploded perspective view of removable cassette and care discs, wherein a care disc is shown in a sectional view;

Fig. 8

a bottom view according to FIG. 4, but concerning a further embodiment;

Fig. 9

the section along the line IX-IX in Fig. 8;

Fig. 10

an exploded perspective view of a holder and the associated care discs;

Fig. 11

a perspective, partially sectioned detail of a drive coupling of the floor care device;

Fig. 12

a perspective view of a driver plate and a Support finger of the drive clutch of FIG. 11;

Fig. 13

a schematic representation of the connector region between the support finger and hub of a care disc;

Fig. 14

a further perspective view, an alternative embodiment of the support and driver training;

Fig. 15

a side view of the floor care device in a further embodiment, with a hinged, the care discs receiving base plate, which latter is shown cut, in an operating position;

Fig. 16

a representation corresponding to FIG. 15, but in the course of a lifting of the floor care appliance;

Fig. 17

a view corresponding to FIG 15, however, in the course of unlocking the bottom plate.

Fig. 18

a following view of Figure 17 with swung-upper housing part to the bottom plate, to expose the care slices in this;

With reference to FIG. 1, a floor care appliance 1 in the form of a floor appliance, which has three care plates 3 which essentially pass through a shelf 2, is shown and described. For this purpose, the device base 2 has a cutout 4 whose contour is predetermined by the arrangement of the care discs 3.

The floor care device 1 is provided on the bottom side with a peripheral end strip 5. Not shown in the exemplary embodiment, but also conceivable in this embodiment, a peripheral suction device may be provided for receiving coarse and fine dust.

FIGS. 2 and 3 show a care disc 3 according to the invention. This care disc 3 is provided for bilateral use on both sides 6 and 7 with a care condition, with the same care pads can be arranged on both sides. In the embodiment shown, however, a preferred arrangement is selected with two opposite, different care frames 8 and 9.

The care disc 3 has a circular in plan, plate-like base support 10 at the peripheral edge of a circumferential toothing 11 is formed. In the middle, the base support 10 is provided with a hub 12.

This hub 12 extends on both sides of the base support 10 in the axial direction to the same mass, wherein in the hub 12 each have a side 6 or 7 of the care disc 3 associated with a centrally formed Stützausformung 13 is formed. This is arranged sunk against a hub end face 14, wherein further the hub end face 14 is arranged axially set back relative to the respective care pad surface, with an offset dimension, which corresponds to about half the basic substrate thickness.

In the hub 12, with respect to the hub end surface 14 upstream of each Stützausformung a centering or insertion recess 15 coaxially upstream. Both the Stützausformung 13 and the centering or insertion recess 15 are formed approximately hemispherical, wherein the centering or insertion recess 15 has a relation to the radius of the Stützausformung 13 enlarged diameter. In the exemplary embodiment shown here, a ratio of centering or insertion radius to support radius of about 2: 1 is selected.

Next, the care disc 3 on both sides abutment 16 for a drive shaft of the floor care device 1. These are formed on both sides of the base support 10 in the form of radial wings. This, the abutment 16 forming wings are externally formed on the hub 12, wherein, as shown, it is preferred to form two diametrically opposite abutment 16 per side 6 or 7 of the care disc 3.

Each abutment 16 extends in the axial direction from the base carrier 10, which is formed thinner in the hub area than in the outer, the lining-bearing area, to the plane of the hub face 14th

On the rear surface facing away from the loading side, each abutment 16 is provided with support ribs 17 (cf., for this purpose, FIG. 3).

Due to the selected arrangement and design of the abutment 16, these are formed freestanding in the circumferential direction.

Further, extending between the abutments 16 in the circumferential direction through openings 18 are formed by window-like openings of the hub portion of the base support 10th

2 and 3 each care discs 3 are shown, which are provided with opposite, different care frames 8 and 9.

However, the selected configuration of the care slices can also be applied to the same coverings on both sides.

An essential feature of the care disc 3 according to the invention is that it is formed mirror-symmetrical, ignoring the possibly different care deposits around a perpendicular to the axis of rotation and center to the base support 10 axis x. As a result of this embodiment, the care disc 3 can be used on both sides, with only one turn of the care disc 3 having to be performed by 180 ° for changing the type of padding or the pad surface.

In the embodiment shown, a care disc 3 is provided on the outer edge side with a circumferential toothing 11. However, such a reversible care disc is also conceivable in embodiments in which the edge surface of the base support 10 is formed, for example, with a rubber tread or the like.

The mentioned peripheral toothing 11 serves to drive the further care discs 3. The care disc provided with the reference numeral 3 in FIG. 1 is driven via a drive shaft of the floor care device 1. The two other care discs 3 'are directly driven via the with the peripheral teeth 11 of the main drive pulley 3. However, a solution is also conceivable in which a care disc 3 'is actively driven, the care disc 3 is directly driven via this and the further care disc 3' indirectly via the care disc 3.

Next is conceivable, the individual care discs 3 circumferentially form without driving elements and drive each one directly.

Due to the inventive design, a change-care disc 3 is specified. Thus commonly used pad types, e.g. to be integrated into the sole and polishing or cleaning and soft cleaning in only one care disc 3. By simply turning the disc 180 ° about the axis x, the corresponding pad type is used. Symmetrical to the disc plane x in the care disc 3, a bilateral coupling system is integrated with the care disc 3 can be coupled to a drive shaft, which, as described in more detail below, that device weight is initiated as a disc normal force.

Through the provided through-openings 18 is a light and hygienic handling of the care discs 3 given a turn or change the same. The care disc 3 has easily recognizable gripping areas. In one embodiment of a care disc 3 with the same coating on both sides is given a longer, eg. Doubled service life of the care discs 3.

4 to 7, the arrangement of the care discs 3 and 3 'in a holder 19 for forming a replacement set is shown in a further embodiment.

For this purpose, one, the holder 19 forming removable cartridge 20 is provided, in which the care discs 3 are supported randumgriffen. The interchangeable cassette 20 is substantially formed as a hollow profile body, with lining through openings 21, which are formed both on the cassette top side 22 and on the opposite side 23.

The interchangeable cassette 20 has a contour which is substantially adapted to the outer contour of the care discs and has a plan view of three interlocking, circular areas. In particular, the edges of the respective care disc 3 encompassing areas are formed in a cross-section C-shaped, which are covered by the Randumgriff here provided on the care discs 3 circumferential teeth 11.

Next top and bottom 22, 23 of the removable cassette 20 are the same.

The care discs 3 are supported in the removable cassette 20 with a vertical clearance, which clearance corresponds to about half the thickness of the base support 10 care disc 3. Next, the care discs 3 are supported in the removable cassette 20 with horizontal play. Thus, the diameters of the lining passage openings 21 are chosen to be somewhat larger than the lining diameters of the individual care disks 3.

The removable cassette 20 is formschlussgehaltert on the floor care device 1, for example. By means of a clip holder or the like. In this case, a lower side of the cassette - in the figures shown, the side 23 - is aligned with the plane of the device base 2 (see FIG. 5).

In the embodiment shown care discs 3 are used, as they have already been described with reference to Figures 1 to 3. By inserting the exchangeable cassette 20 into the floor care appliance 1, supporting fingers 24 and 25, described in greater detail later on, engage in the hubs 12 of the care slices 3. Here, the support fingers 25 serve only as centering axes. The support finger 24 is connected to the drive shaft of the floor care device 1 and has drive fingers 26 which occur against the abutment 16 of the care disc 3 for driving the same.

The care discs 3 are arranged captive and prepositioned in the removable cassette 20 by the selected configuration.

Due to the location of the power transmission points - tooth engagement of the circumferential teeth 11 of the care discs 3 - an axis of symmetry y is given. The interchangeable cassette 20 has a plan view of this symmetry axis y mirror-inverted. For the passage of the removable cassette 20 formed in the bottom plate 2 recess 27 of the removable cassette 20 is formed grundrissentsprechend.

To the specified axis of symmetry y, the removable cassette 20 is reversible together with the nursing discs 3 held therein, as far as reversible care discs 3 of the manner described with respect to Figures 1 to 3 are used.

In Fig. 6, an exchangeable cartridge 28 is shown for use of only one side with a pad 9 provided care discs 29. Here is the one, the pad 9 opposite cartridge top - in Fig. 6, the side 22 - formed closed to the hub area.

In FIGS. 8 to 10, the holder 19 is shown in a further embodiment. Here, the holder 19 is designed as a star-shaped support frame 30, which has a central positive connection point 31, from which three support arms 32 extend radially outward. End side, the support arms 32 in plan view annular peripheral rotary brackets 33rd

The nursing discs 34 held by the support frame 30 are provided on one side with a care cover 9 and have on the side opposite the care cover 9 a side, which with respect to FIGS. 1 to 3 already described configuration of the care discs, same configuration with respect to the Stützausformung 13 and the centering or insertion 15 on. Next abutment 16 are also provided here. Coaxially with its support formation 13, a circumferential rotary bearing 35 is formed on each care disc 34 for rotatably receiving the care disc 34 in the circumferential rotational support 33 of the support frame 30.

The arrangement is chosen so that the circumferential pivot bearing 35 forms an annular shoulder 36 in the region of its free end. The peripheral rotary support 33 of the support frame 30 has a central passage opening 37, in which - viewed in the insertion - end, one, the passage opening diameter enlarging and the annular shoulder 36 of the peripheral rotary bearing 35 adapted annular groove 37 is formed.

The care discs 34 are, for example, already preassembled at the factory on the support frame 30, wherein the orientation of the support arms 32 of the support frame 30 are aligned according to the positioning of the care discs 34 in the floor care device 1.

The support frame 30 inserted into the floor care appliance 1 is held in a form-fitting manner via the interlocking connection point 31.

For the entry of, formed by the support frame 30 and the recorded care discs 34 exchange sets, the housing bottom has an approximately the common outer contour of the three care discs 34 corresponding contour. In the exemplary embodiments shown, this corresponds approximately to the contour of the recess 4 shown in FIG. 1. Thus, this embodiment of the holder 19 is also used in a floor care appliance 1, as shown in FIG. 1, with care slices 3 originally to be mounted individually used.

In all variations of the holder 19 of the respective disk carrier is coupled by positive engagement with the ground device 1, wherein the connection is made to the drive unit. Here, the holder 19 is unencumbered by the weight of the device. The support of the device weight via the hubs 12 of the respective care discs 3, 29 and 34th

The holder 19 has design or constructive features that facilitate a clear insertion of the removable cassette 20 or 28 or the support frame 30 and rule out incorrect operation. For this purpose, for example, corresponding color markings, as they are, for example, in Fig. 4 are shown (reference numeral 38) are used. This can also be achieved by positive locking elements on the floor care appliances 1 or the appliance floor 2 and the respective holder 19. Such corresponding interlocking elements, which are arranged mirror-symmetrically or on the axis of symmetry y in accordance with the overall design, are provided, for example, with reference numeral 39 in FIG. 4. In FIG. 8, a web 40 extending on the axis of symmetry y in the direction of the center is provided for the positionally correct arrangement of the support frame 30, which web 40 is acted upon by the saw blade regions when the support frame 30 is oriented incorrectly to prevent insertion.

The care discs are pre-positioned by the holder 19 so that they are displaceable by a defined game, but not mutually interchangeable. The care discs are still connected captive and simultaneously manipulated in the form of a change or turning the same. The lining passage openings 21 in the interchangeable cassettes 20 and 28 are selected to be larger than the outer diameter of the working surface, in particular at ö Care discs, the disc edge areas are largely covered.

This results in handling advantages, in particular by the simultaneous turning of all care discs. Next, a safe storage of care discs is given, so no care discs can be lost. In addition, there is the possibility, for example, to a wall suspension of the bracket 19. Next proves to be advantageous that the direction of rotation of the care discs is always the same. In addition, a combination of different wheel sizes is possible. It is also conceivable to visualize the different functions by printing and / or color design of the cassette. In particular, with externally toothed care discs, as they are used in the embodiments shown, increased operator protection is given, since these are covered in particular across the edge when using a removable cassette 20 or 28. At the same time thereby the teeth are protected from spin-on stones or the like, which could become wedged in the toothing.

Using toothed care discs they are always arranged in the holder 19 in a fixed orientation about the rotation axis to each other. This allows the use of asymmetric disc coverings, such as e.g. elliptical plaque forms, whereby a reduction of the unprocessed edge strip can be achieved.

FIGS. 11 to 13 show, in an exemplary embodiment, a coupling system for the care discs 3, 29 or also 34. In these figures, only the function and the coupling of a reversible care disc 3 will be described. However, the versions are also transferable to the care disc 29 and 34.

In Figure 11, a drive shaft 41 is shown with an end rotatably connected thereto support finger 42. The support finger 42 is hemispherical formed at the end, via this support finger 42, the vertical force from the soil care device 1 via the Stützausformung 13 of the hub 12 introduced into the care disc 3 becomes.

The support finger 42 shown in a detail in FIG. 12 has four radially projecting driving cams 43 arranged at the same angle to each other. In the region of its lower edge, an annular shoulder 44 is formed in each case between the driving cams 43 with a supporting finger outer wall.

The support finger 42 thus formed serves at the same time in the not directly driven care discs 3 for centering the same, these support fingers 42 are arranged on non-driven centering.

To form a drive unit as shown in FIG. 11, a driver plate 45 is further provided, which has a central opening 46 for the passage of the support finger 42, from which opening 46 four aligned at the same angle, radially outwardly facing slots 47 go out, which after Joining support fingers 42 and driver plate 45 by entering the driving cam 43 form a positive connection between these parts. Here, the follower plate 45 is supported on the underside of the annular shoulder 44 of the support finger 42.

On the underside, the carrier plate 45 has two diametrically opposite drive fingers 48, for forming the positive engagement of the care plate 3 in the region of its abutment 16.

The follower plate 45 is supported via a coil spring 49 on the drive shaft 41.

By this configuration, the driver plate 45 is positively in the circumferential direction, but fixed vertically movable on the support fingers 42.

The follower plate 45 is axially displaceable relative to the support finger 42 and pivotable about the axes perpendicular to the drive axis z. The positive locking elements of the support finger 42 and driver plate 45 are in permanent engagement. The Mitnehmerteller 45 has additional positive locking elements, which serve to transmit a circumferential force.

In Fig. 14, an alternative embodiment is shown. Here, a support finger 24 and its associated drive finger 26 are integrally formed, wherein between the drive fingers 26 and the support finger 24 each have a spring arm 50 is formed. Here are therefore compared to the embodiment described above, in which separate components (support fingers 42, Mitnehmerteller 45 and coil spring 49) are provided, these components now integrated, eg. As a plastic injection molded part.

Regardless of the embodiment, the following mode of action results. Support fingers 24 and 42, drive fingers 26 and 48 and the axially acting spring element (coil spring 49 or spring arm 50) are torsionally rigidly connected to each other. As a variant, support fingers and drive fingers can be braced in opposite directions to the drive torque by means of the spring element resiliently in the circumferential direction. At startup of the system, a sudden increase in torque is thus avoided in the clutch by the spring element is deformed until support fingers and drive fingers in turn form a torsionally rigid connection.

Collide at a joining of drive and driven side serving for transmitting the circumferential force form-fitting elements (drive fingers 26 and 48 and abutment 16), so soft the drive fingers 26 and 48 against the spring force axially. Upon start-up of the drive side, the orientation of the drive finger 26 or 48 and hub with respect to the drive axis changes, whereby the drive finger due to the spring force axially assumes its initial position relative to the support finger again. As a result, after a dead angle again a positive connection between the input and output side is made.

During the torque transmission or rotational movement, a large angular error between drive and driven side is allowed by the drive finger pivoted against the spring force relative to the support finger or by a relative movement to the interlocking elements of abutment and drive finger.

Furthermore, a torque overload protection can be integrated by beveled angle surfaces on the form-locking elements of the drive finger and driver.

As already mentioned, the hub 12 of the care disc 3 has positive locking elements which serve to transmit a peripheral force to the drive finger 26. A pan-type thrust bearing (Stützausformung 13) forms the mating contour to the drive-side support fingers. By continuing the Stützausformung 13 in a spherical or conical contour (centering or insertion 15) a self-finding or centering is guaranteed even with large axial offset of the support finger and hub 12. This is also done with non-parallel axes (see FIG. 13).

FIGS. 15 to 18 show a further embodiment of the floor care appliance 1, in which a housing top 51 of the appliance 1 is associated with a bottom plate 52 so that it can be pivoted away.

The bottom plate 52 is hingedly attached to the upper housing part 51 and locked or unlocked with a locking mechanism 53. In the bottom plate 52, the care slices 29 are positioned, including the bottom plate 52 covering passage openings 21, the dimensions are selected so that the maintenance slices 29 are at least partially bordered in the bottom plate 52 secured against falling out.

Care discs of the type illustrated in FIGS. 1 to 3 and described for this purpose are preferably used here. However, as shown in the exemplary embodiments described above, the result is that the floor care appliance 1 or the housing upper part 51 accommodating the drive unit unit is disposed on the care discs 29, with the drive shaft and / or centering shaft connected support fingers 24, 25 is supported. The weight of the device is thus introduced into the care discs 29. The substantially box-shaped bottom plate 52 forms the bottom of the device 2 ', which is not touched by the care discs 3 in operation. Rather, here arises between a bottom 7 of the care discs 29 and the bottom of the device 2 'a gap s a.

The support fingers 24 and 25 secure the care slices 29 in operation both in the vertical and in the radial direction. The device bottom 2 'of the bottom plate 52 is used during operation of the floor care device 1 only to cover the device interior.

In the drawings, an embodiment is shown, in which one side provided with a care sheet 9 care discs 29 are used. However, it is also possible here to use care disc 3 with care frames 8, 9 provided on both sides.

If the floor care appliance 1 is lifted off the floor 54 to be maintained, the care slats 29 rest on the floor 2 'of the floor slab 52, thereby preventing the care slabs 29 from falling out of the floor care appliance. Thus, it is possible to dispense with axial fixations, such as snaps or screw connections between the care disc 29 and the bearing on the device side - in this case supporting fingers 24, 25 - (compare FIG. 16).

By actuation of the locking mechanism 53, the bottom plate 52 is unlocked, after which the upper housing part 51 can be folded up by a hinge 80, while the bottom plate 52 remains on the floor to be maintained 54 (see Fig. 17 and 18).

An application variant consists in the possibility of first setting up the entire floor care appliance 1 and then unlocking the floor slab 52. The latter should then be folded down.

As can be seen from Fig. 18, hereafter the care slices 29 are free in the bottom plate 52 and can be changed or turned in the simplest way. The lining passage openings 21 of the bottom plate 52 serve in this case for the pre-positioning of the changed or turned care disks 29 and 3, respectively.

In a further embodiment it can be provided that the bottom plate 52 and the upper housing part 51 completely after unlocking are detachable from each other. This example, to clean the interior or to replace the bottom plate 52. Here, for example, a snap connection or an effective at several points locking mechanism which unlocks the bottom plate 52 completely releases are used.

After changing or turning the care discs or a cleaning or replacement of the bottom plate 52, the upper housing part 51 is pivoted back until it is again supported on the care discs 29. Finally, the locking takes place again with the bottom plate 52.

Claims (20)

1. Plurality of treating discs (3, 29, 34) for a floor-treating appliance (1), in particular polisher, if appropriate having a peripheral suction-extraction device, characterized by being formed as an exchangeable set by means of the treating discs (3, 29, 34) being accommodated in a common mount (19), forming a changeable cassette (20, 28).
2. Plurality of treating discs according to Claim 1, characterized in that, for use on both sides, a treating disc (3) is provided with a treating covering (8, 9) on both sides (6, 7).
3. Plurality of treating discs according to one of the claims 1 or 2, characterized in that several treating discs (3,29,34) are secured in the changeable cassette (20,28) by being enclosed at the edge.
4. Plurality of treating discs according to one of the Claims 1 to 3, characterized in that the treating discs (3, 29, 34) can be secured in the floor-treating appliance (1) on both sides by means of the changeable cassette (20, 28).
5. Plurality of treating discs according to one of the preceding claims, characterized in that at least one treating disc (3, 29, 34) is driveable in rotation.
6. Plurality of treating discs according to one of the preceding claims, characterized in that a treating disc (3, 29, 34) has a supporting and driving formation.
7. Plurality of treating discs according to Claim 6, characterized in that a circumferential rotary bearing (35) is formed coaxially in relation to the supporting formation (13) on the treating disc (34), for the purpose of accommodating the treating disc (34) in a rotatable manner in a mount, which may be separate from the floor-treating appliance (1).
8. Plurality of treating discs according to one of the preceding claims, characterized in that different treating coverings (8, 9) are applied on opposite sides on a treating disc (3).
9. Plurality of treating discs according to one of the preceding claims, characterized in that a treating disc (3) has a circumferential toothing arrangement (11) .
10. Plurality of treating discs according to Claim 9, characterized in that a driven treating disc (3) drives the rest of the treating discs (3') via its circumferential toothing arrangement (11).
11. Plurality of treating discs according to one of the preceding claims, characterized in that the mount (19) is of star-like formation.
12. Plurality of treating discs according to one of the preceding claims, characterized in that a circumferential rotary mount (33) is formed on the mount (19), associated in each case with a central region of a treating disc (34).
13. Plurality of treating discs according to Claim 12, characterized in that the circumferential rotary mount (33) is connected in a positive-locking manner to a circumferential rotary bearing (35) of the treating disc (34).
14. Plurality of treating discs according to either of Claims 12 and 13, characterized in that the cross section of the circumferential rotary mount (33) is of annular formation, with a through-passage opening in which the circumferential rotary bearing (35) of a treating disc (34) is accommodated.
15. Plurality of treating discs according to one of the preceding claims, characterized in that the mount (19) has a central positive-locking connecting location (31) for securing in the floor-treating appliance (1).
16. Plurality of treating discs according to one of the preceding claims, characterized in that a treating disc (3, 29) is secured with vertical play in the changeable cassette (20, 28).
17. Plurality of treating discs according to one of the preceding claims, characterized in that a treating disc (3, 29) is secured with horizontal play in the changeable cassette (20, 28).
18. Plurality of treating discs according to one of the claims 3 to 17, characterized in that each treating disc (3, 29, 34) is secured in the changeable cassette (20, 28) by being enclosed at the edge.
19. Plurality of treating discs according to one of the preceding claims, characterized in that the changeable cassette (20, 28) can be secured in a positive-locking manner on the floor-treating appliance (1).
20. Plurality of treating discs according to one of the claims 4 to 19, characterized in that both sides of the changeable cassette (20) can be mounted in the floor-treating appliance (1), with two substantially identical outer sides (22, 23) being defined in the process.

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