EP1479336A2 - Cleaning roller - Google Patents

Abstract

A rotary cleaner (10) for a floor-cleaning machine comprises a cylindrical rotary body (16) in the machine which has a surrounding covering cleaning element of tube-shaped textile (14) which is removably attached to the body.

Description

The invention relates to a cleaning roller for a floor cleaning machine, with a cylindrical roller body, which is rotatable about an axis of rotation on the Floor cleaning machine is storable, and with a the roller body jacket-like surrounding cleaning element.

Such cleaning rollers come in particular for scrubbing, scouring and Polishing machines are used to clean a floor surface and are known for example from DE 196 35 146 C1. It suggests the roller body and the cleaning element in one piece from a dimensionally stabilized Form a tangle of fibers on a bearing shaft of the floor cleaning machine can be put on and preferably from a variety is constructed from disc-shaped individual elements. The individual elements can are placed on each other in the axial direction, and for axial fixing of the individual elements, snap rings can be used. Such one The design of the cleaning roller enables good cleaning results in many cases. The exchange of the individual elements in the event of contamination or wear of the tangle of fibers is not, however, by inexperienced people in all cases can be easily accomplished.

Floor cleaning machines are also known in which the cleaning of the Floor surface is done with the help of a rotating disc, the cleaning element held on a drive plate of the disc by means of a Velcro fastener is. However, such floor cleaning devices do not allow in optimal floor cleaning in all cases.

The object of the present invention is a cleaning roller of the beginning mentioned type in such a way that they have an improved cleaning result enables, the cleaning element exchanged in a simple manner can be.

This object is achieved according to the invention in a cleaning roller of the generic type solved in that the cleaning element as a tubular Textile material is designed, which is removably held on the roller body.

Such a configuration of the cleaning roller enables optimal Cleaning of floor surfaces with the help of the textile material on the roller body is held. The textile material is in the form of a tube and can therefore be easily replaced. For this it is only required, the textile material in the axial direction on the roller body wind up or subtract from this. For cleaning different floor surfaces different textile materials can be used are each designed for optimal cleaning of the respective floor area are. In addition, the textile material itself when soiled can be easily cleaned by removing it from the roller body and, for example is washed in a washing machine.

For the axial fixing of the tubular textile material can be provided be that the textile material at least at one end region has a fastener for axially fixing the textile material on the roller body.

The fastening means can be designed, for example, in the form of a drawstring be with which the textile material is contracted at the ends can. Here it is to achieve a particularly simple handling of Advantage if the drawstring is rubber-elastic.

The fastening means is preferably in an axial direction in the roller body Arranged in the direction of the end region of the textile material. At a such a configuration, the tubular textile material is at least at one end over the roller body so that the roller body face is at least partially covered by the textile material.

In a particularly preferred embodiment it is provided that the Fastener cooperates with a fastener that one end region of the roller body is arranged adjacent. So can for example, be provided that the fastener and the fastener designed as interacting hooks and eyes are.

It is advantageous if the fastening element on an end face of the cleaning roller is arranged. The fastener can be, for example Form the hook, which is inserted into an eyelet riveted into the textile material can be.

Particularly good cleaning results can be achieved in that the Textile material is made using a microfiber material. Such a thing Microfiber material is particularly suitable for cleaning a wide variety of items Hard surfaces, especially for cleaning tiles, especially of Stoneware tiles.

It is favorable if the textile material comprises a plush fabric. The web-like Design of the textile material gives it a high stability, whereby it is practically inextensible in the radial direction, so that the one Centrifugal forces occurring rotation of the cleaning roller does not affect the textile material deform noticeably.

To the tubular textile material on the roller body in a particularly simple manner to be determined without the risk of it slipping or Forms folds, it is favorable if the roller body for tensioning the textile material is expandable in the radial direction. The diameter of the roller body can be changed. During the floor cleaning can Tensioning the textile material a relatively large diameter is used come while replacing the textile material of the roller body may have a smaller diameter, so that the tubular Textile material in a simple manner in the axial direction on the roller body wind up and pull off from this.

In a particularly preferred embodiment it is provided that the Roller body by applying a torque in the radial direction is expandable. Such a torque can be achieved in a simple manner generated that one of a rotary drive of the floor cleaning machine rotating cleaning roller on the to be cleaned The floor area touches down, because it is between the cleaning roller and the Bottom surface frictional forces on the outside, which on the roller body exert a torque. The application of this torque has an expansion of the roller body in this preferred embodiment result, so that the tubular textile material is stretched and thereby being connected to the roller body in a rotationally fixed manner.

The roller body preferably has a roller core which is connected to a drive shaft the floor cleaning machine is releasably connectable, as well as several rotatable relative to the roll core about the axis of rotation of the roll body, can be pressed apart by the rotary movement relative to the roller core Clamping elements. A positive guidance is preferably provided here with a relative movement between the roller core and clamping elements Clamping elements leads radially outwards, so that the diameter of the Rolled body enlarged and consequently the tubular textile material stretched becomes.

It is favorable if the tensioning elements counteract the effect of an elastic one Restoring force can be pressed apart. This can be constructive simple way to ensure that the clamping elements are in their original, take an approximate position as soon as the external exposure of the roller body with a torque is eliminated. For example, it can be provided that the clamping elements of a ring or tubular elastic return element, for example from a Rubber hose, are surrounded.

It is particularly advantageous if the clamping elements with the restoring element are positively connected. This can cause a relative movement of the restoring element in relation to the clamping elements can be prevented. It can be provided, for example, that each clamping element on the outside first form-locking element, for example, has a longitudinal groove with a second positive locking element arranged on the inside of the restoring element, for example, a holding rib interacts.

The clamping elements can thus be separated from one another in a structurally simple manner be pressed so that they slide on a guide surface which is not round in cross section of the roller core. Is the roll core by means of Rotary drive of the floor cleaning machine set in rotation, one leads Relative movement of the clamping elements based on the roller core to that the clamping elements due to the non-circular guide surface of the roll core in radial direction apart.

At least two, preferably in the form of a circular arc, preferably come Clamping elements are used that extend the roller body in the circumferential direction surrounded, where they preferably fit positively on the roller body, when they take their approximate position. The roller body can be designed, for example, in the form of a profile rod.

It is of advantage if the roll core is square in cross section is with rounded corner areas and if each has a Lateral surface of the roller body extends a clamping element, the clamping elements by turning through 45 ° in relation to the roller body in a radial direction Direction between an inner, approximated position and a outer, spaced apart position can be moved back and forth.

In a preferred embodiment it is provided that the diameter of the roller body by pushing apart the clamping elements by at least about 5 mm, preferably about 8 mm can be enlarged.

To ensure that the cleaning roller runs evenly in a structurally simple manner in contact with the floor surface to be cleaned it is advantageous if the clamping elements facing side edges have at least one aligned obliquely to the axis of rotation of the roller body Include edge section. By means of the obliquely aligned Edge sections can be ensured in a structurally simple manner, that at no time a side edge of the clamping elements over the entire Roller length rests on the floor surface to be cleaned. Rather, it can ensure that the side edges on the floor surface to be cleaned roll.

It is expedient if each side edge is aligned with one another in a V-shape Has edge sections.

It is particularly advantageous if the tensioning elements are in each other approximate position, i.e. in the relaxed state of the restoring element, spread in pairs. The mechanical stability of the cleaning roller can thereby be increased.

To ensure that the clamping elements in the absence of torque assume a defined position relative to the roller core is at a particularly preferred embodiment of the invention provided that the clamping elements have a guide element on the end face, which with a cooperates non-rotatably connected to the roller core guide part. through Such a configuration can be prevented in a structurally simple manner be that the tensioning elements already move apart, if only with a centrifugal force due to the rotation of the roller body be charged. Such a one, acting only in the radial direction Force application occurs especially when the cleaning roller is arranged at a distance from the floor surface and by means of the rotary drive Floor cleaning machine is rotated. Be in that state by means of the interacting guide elements and guide parts Reliably avoid unbalance.

It is expedient if the guide element is arranged on the clamping element Guide pin and the guide part is designed as a guide receptacle, in that the guide pin dips into. The contour of the guide holder can correspond to the contour of the guide surface of the roller core, so that the Clamping element when exposed to a torque unhindered relative can be rotated to the roll core, a movement of the clamping element without applying torque, however, is reliably prevented.

In an advantageous embodiment it is provided that the roller core has an end cap on the face that is connected to the roller core so that it cannot rotate and the guide part, preferably the guide receptacle.

Figur 1:

eine Längsschnittansicht einer ersten Ausführungsform einer erfindungsgemäßen Reinigungswalze;

Figur 2:

eine teilweise aufgetrennte perspektivische Darstellung der ersten Ausführungsform der Reinigungswalze mit einem abgenommenen Spannelement;

Figur 3:

eine perspektivische Darstellung einer Endkappe der ersten Ausführungsform der Reinigungswalze;

Figur 4:

eine Schnittansicht der ersten Ausführungsform der Reinigungswalze in entspanntem Zustand;

Figur 5:

eine Schnittansicht der ersten Ausführungsform der Reinigungswalze in einem Zwischenzustand;

Figur 6:

eine Schnittansicht der ersten Ausführungsform der Reinigungswalze in gespanntem Zustand;

Figur 7:

eine teilweise aufgetrennte perspektivische Darstellung einer zweiten Ausführungsform einer erfindungsgemäßen Reinigungswalze und

Figur 8:

eine Schnittansicht der zweiten Ausführungsform der Reinigungswalze in entspanntem Zustand.

The following description of a preferred embodiment of the invention serves in conjunction with the drawing for a more detailed explanation. Show it:

Figure 1:

a longitudinal sectional view of a first embodiment of a cleaning roller according to the invention;

Figure 2:

a partially broken perspective view of the first embodiment of the cleaning roller with a removed clamping element;

Figure 3:

a perspective view of an end cap of the first embodiment of the cleaning roller;

Figure 4:

a sectional view of the first embodiment of the cleaning roller in the relaxed state;

Figure 5:

a sectional view of the first embodiment of the cleaning roller in an intermediate state;

Figure 6:

a sectional view of the first embodiment of the cleaning roller in the tensioned state;

Figure 7:

a partially broken perspective view of a second embodiment of a cleaning roller according to the invention and

Figure 8:

a sectional view of the second embodiment of the cleaning roller in the relaxed state.

FIGS. 1 to 6 show a reference number 10 as a whole shown first embodiment of a cleaning roller according to the invention, which in the usual way on a drive shaft, not shown in the drawing a mobile floor cleaning machine can be stored and around an axis of rotation 12 is rotatable. The rotary drive of the cleaning roller 10 takes place in the usual way by means of a known drive element of the floor cleaning machine, for example by means of an electric motor. The rotating one Cleaning roller 10 can be moved along a floor surface to be cleaned become. For cleaning the floor surface, the cleaning roller 10 a cleaning element in the form of a tubular textile material 14, the surrounds a cylindrical roller body 16 in the form of a jacket. The textile material 14 is made of a microfiber material in the form of a plush fabric and sewn from a piece goods into an endless tube, which then was cut to length in accordance with the length of the roller body 16. The Textile material 14 overlaps the end of the roller body 16, this is to achieve a better overview not shown in the drawing. In his overlapping end regions, the textile material is designed as eyelets Fastening means (not shown) on the front hook 18 of the Cleaning roller 10 cooperate so that the tubular textile material 14 by means of the hook 18 and the eyelets in a structurally simple manner can be set.

The roller body 16 comprises a central roller core 20 in the form of a Extruded profile, which has a central through opening 22 with hexagonal Cross-section, so that the roller body 16 on a corresponding, also hexagonal drive shaft of the floor cleaning machine can be put on. From Figures 4, 5 and 6 it is clear that the roller core 20 has a substantially square Has cross section, the corners are each rounded. The roll core 20 is surrounded by four clamping elements 24, 25, 26 and 27, which are relative are rotatable about the axis of rotation 12 to the roller core 20. To this end, the Outside 29 of the roller core 20 has a guide surface on which the clamping elements 24 to 27 with a corresponding, arch-shaped Sliding surface 30 in the relaxed state of the roller body 16 in a form-fitting manner issue. This is clear from Figure 4.

The roller body 16 also includes a rubber tube 32 which the Clamping elements 24 to 27 surrounds in the circumferential direction and these are resilient with a radially inward restoring force. The outside 33 of the rubber hose 32 serves as a non-slip contact surface for the tubular textile material 14.

The end of the roller core 20 is in each case by an end cap 35 or 36 overlapped, which are connected in a rotationally fixed manner to the roller core 20 by means of fixing pins 38 are. The end caps 35 and 36 each have an end face Roller core 20 abutting cover 40, on the one in the axial direction Connects sleeve 41, which has an end face region of the roller core 20 in Surrounds circumferential direction. In the free end face 42 of the sleeves 41 is in each case a guide receptacle 43 is formed, into which a face on each clamping element 24 to 27 arranged guide pin 44 dips. The contour of the Guide receptacle 43 corresponds to the outer contour of the roll core 20.

If the roller core 20 is rotated relative to the clamping elements 24 to 27, so this has the consequence that the clamping elements 24 to 27 from the roller core 20 apart can be pressed and the tube body 16 surrounding the tubular body Textile material 14 is tensioned. This is particularly evident from the figures 4, 5 and 6 clearly. The relative movement between the clamping elements 24 to 27 and the roller core 20 is caused as soon as the order Rotation axis 12 rotating cleaning roller 10 on a floor surface to be cleaned is placed, since here the textile material 14 with one of the rotary movement the roll core is subjected to a frictional force, which are transmitted via the rubber hose 33 to the tensioning elements 24 to 27 becomes. The frictional force acts in the circumferential direction of the cleaning roller 10, so that the roller body 16 with respect to the axis of rotation 12 with a torque is applied. Because of this torque, the clamping elements 24 to 27 rotated relative to the roller core 20 and here radially apart pressed against the elastic exerted by the rubber hose 33 Restoring force. The rotating cleaning roller 12 is done after If floor cleaning is lifted off the floor surface to be cleaned, this is not necessary Applying a torque to the roller body 16. this in turn has the consequence that the clamping elements 24 to 27 due to the rubber hose 32 restoring force exerted their original relaxed Take position in which the diameter of the roller body 16 by approx. Is 8 mm less than in the tensioned state with maximum expansion of the Tensioning elements 24 to 27. The textile material 14 can be in the relaxed state subtracted in a simple manner from the roller body 16 in the axial direction and then be washed.

As already explained, the textile material 14 is fastened by means of the Hooks 18. These are essentially L-shaped and stand outside of the lid 40 of the end caps 35 and 36, so that they in the the drawing not shown eyelets can be inserted in the End regions of the textile material 14 riveted over the roller body 16 are. The textile material can thus be fixed in the axial direction by means of the hooks and eyes in a structurally simple manner, and by rotating the clamping elements 24 to 27 relative to the roller core 20 stretch the textile material 14 in the radial direction.

In FIGS. 7 and 8 there is a reference number 50 which is assigned in total shown second embodiment of a cleaning roller according to the invention, which is constructed similarly to that above with reference to FIG Figures 1 to 6 explained cleaning roller 10. For identical components therefore in FIGS. 7 and 8 the same reference numerals are used as in FIG Figures 1 to 6 and to avoid repetition is in this regard full reference to the above explanations.

In contrast to the cleaning roller 10, the cleaning roller 50 arrives Roll body 16 for use, one in cross section in the form of a five-pointed Star-oriented roller core 52 and is surrounded by five clamping elements 54 to 58, which are relative to the roller core 52 about the axis of rotation 12 are rotatable. For this purpose, the outside of the roller core 52 forms a guide surface 60 on which the clamping elements 54 to 58 with a corresponding, arcuate sliding surface 62 in the relaxed state of the Roller body 16 of the cleaning roller 50 rest in a form-fitting manner. This will be out Figure 8 clearly.

The clamping elements 54 to 58 face each other side edges 64 on with two V-shaped mutually aligned edge sections 65 and 66, which are each aligned obliquely to the longitudinal axis 12. This will make a particularly uniform concentricity of the cleaning roller 50 is reached when this contacted a floor surface to be cleaned, because of the oblique to the axis of rotation 12 aligned edge portions 65 and 66 ensures that too at no time a side edge 64 of the clamping elements 54 to 58 over the entire length of the cleaning roller 50 on the floor surface to be cleaned rests.

In the cleaning roller 50, the clamping elements 54 to 58 overlap in pairs in the region of their V-shaped edge sections 65 and 66. This improves the mechanical strength of the cleaning roller 50.

The tensioning elements 54 to 58 are surrounded by a rubber hose 68, that of the above explained with reference to Figures 1 to 6 Rubber hose 32 differs in that it is on the inside evenly distributed in the circumferential direction five radially inward guide ribs 70, each in a corresponding longitudinal groove 71 immerse, which are molded on the outside in each clamping element 54 to 58. By means of the guide ribs 70 and the longitudinal grooves 71 is a positive Connection between the rubber hose 68 and the tensioning elements 54 to 58 made so that the rubber hose 68 relative to the clamping elements 54 to 58 cannot slip.

Corresponding to the cleaning roller 10, the cleaning roller 50 can also by a rotational movement of the clamping elements 54 to 58 based on the Roller core 52 can be ensured that the roller body 16 to Tensioning the textile material 14 expands in the radial direction. The relative movement between the tensioning elements 54 and 58 and the roller core 52 is caused as soon as the cleaning roller rotating about the axis of rotation 12 50 is placed on the floor surface to be cleaned, so that then Roller body 16 automatically assumes its expanded position. Will the rotating cleaning roller 50 lifted off the floor surface to be cleaned, so take the tensioning elements 54 to 58 due to the rubber hose 68 restoring force exerted on them automatically their approximated Position in which the diameter of the roller body 16 is smaller than in the state with maximum expansion, so that the textile material 14 can be easily removed.

Claims (22)

Cleaning roller for a floor cleaning machine, with a cylindrical roller body which can be mounted on the floor cleaning machine so that it can be rotated about an axis of rotation, and with a cleaning element which surrounds the roller body in a jacket-shaped manner, characterized in that the cleaning element is designed as a tubular textile material (14) which can be removed from the roller body ( 16) is held. Cleaning roller according to claim 1, characterized in that the textile material (14) has at least one fastening means on at least one end-side region for axially fixing the textile material (14) on the roller body. Cleaning roller according to claim 2, characterized in that the fastening means is designed as a drawstring. Cleaning roller according to Claim 2 or 3, characterized in that the fastening means is arranged in an end region of the textile material (14) which overlaps the roller body (16) in the axial direction. Cleaning roller according to claim 2, 3 or 4, characterized in that the fastening means cooperates with a fastening element (18) which is arranged adjacent to an end region of the roller body (16). Cleaning roller according to claim 5, characterized in that the fastening means and the fastening element are designed as cooperating hooks (18) and eyelets. Cleaning roller according to claim 5 or 6, characterized in that the fastening element (18) is arranged on an end face of the cleaning roller (10; 50). Cleaning roller according to one of the preceding claims, characterized in that the textile material (14) is produced using a microfiber material. Cleaning roller according to one of the preceding claims, characterized in that the textile material (14) comprises a plush fabric. Cleaning roller according to one of the preceding claims, characterized in that the roller body (16) for tensioning the textile material (14) can be expanded in the radial direction. Cleaning roller according to claim 10, characterized in that the roller body (16) can be expanded in the radial direction by the application of a torque. Cleaning roller according to claim 10 or 11, characterized in that the roller body (16) has a roller core (20; 52) which can be detachably connected to a drive shaft of the floor cleaning machine, and several relative to the roller core (20; 52) about the axis of rotation (12 ) of the roller body (16) rotatable, by the rotational movement relative to the roller core (20; 52) can be pressed apart clamping elements (24, 25, 26, 27; 54, 55, 56, 57, 58). Cleaning roller according to claim 12, characterized in that the tensioning elements (24, 25, 26, 27; 54, 55, 56, 57, 58) can be pressed apart against the action of an elastic restoring force. Cleaning roller according to claim 12 or 13, characterized in that the tensioning elements (24, 25, 26, 27; 54, 55, 56, 57, 58) are surrounded by an annular or tubular elastic restoring element (32; 68). Cleaning roller according to claim 14, characterized in that the tensioning elements (54, 55, 56, 57, 58) are positively connected to the restoring element (68). Cleaning roller according to one of claims 12 to 15, characterized in that the tensioning elements (24, 25, 26, 27; 54, 55, 56, 57, 58) slide on a guide surface (29; 62) of the roller core (20 ) issue. Cleaning roller according to one of claims 12 to 16, characterized in that the tensioning elements (54, 55, 56, 57, 58) have mutually facing side edges (64) which have at least one edge section which is oriented obliquely to the axis of rotation (12) of the roller body (16) (65, 66). Cleaning roller according to claim 17, characterized in that each side edge (64) has two edge sections (65, 66) aligned in a V-shape with respect to one another. Cleaning roller according to one of claims 12 to 18, characterized in that the clamping elements (54, 55, 56, 57, 58) overlap in pairs in their approximated position. Cleaning roller according to one of claims 12 to 19, characterized in that the tensioning elements (24, 25, 26, 27; 54, 55, 56, 57, 58) have a guide element (44) on the end face, which is connected to the roller core with a rotationally fixed 20; 52) connected guide part (43) cooperates. Cleaning roller according to 20, characterized in that the guide element is designed as a guide pin (44) arranged on the tensioning element (24, 25, 26, 27; 54, 55, 56, 57, 58) and the guide part is designed as a guide receptacle (43) into which the guide pin (44) is immersed. Cleaning roller according to Claim 20 or 21, characterized in that the end of the roller core (20; 52) carries an end cap (35, 36) which is non-rotatably connected to the roller core (20; 52) and has the guide part (43).

Images