EP1571963A2

EP1571963A2 - Mop

Info

Publication number: EP1571963A2
Application number: EP03767726A
Authority: EP
Inventors: Joachim Damrath; Markus Spielmannleitner; Gerhard Wetzl
Original assignee: BSH Bosch und Siemens Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2002-12-02
Filing date: 2003-12-02
Publication date: 2005-09-14
Anticipated expiration: 2023-12-02
Also published as: AU2003292170A1; WO2004049894A2; WO2004049894A3; AU2003292170A8; AU2003292171A8; US7178194B2; US20060016038A1; ATE552765T1; WO2004049884A3; EP1571964A2; AU2003292171A1; US7178195B2; WO2004049884A2; EP1571963B1; US20060016041A1

Abstract

The invention relates to a mop (101) comprising a holder (102) for attaching a mop covering (103). The holder (102) is composed of an at least essentially rigid core (119) and of a flexible edge lining (120) that is placed along at least one portion of the edge of the flat core (119) or the mop covering (103) projects beyond the holder (102) on at least one portion of the periphery of said holder (102). The core (119) is preferably encapsulated with the material of the edge lining (120) by injection molding in order to achieve an improved joining and the provision of a small gap between the core (119) and the edge lining (120).

Description

mop

The present invention relates to a damp mop with a holder for fastening a mop cover, in particular for use with a device for pressing out the mop cover.

DE10065369 discloses a device for moistening and dehumidifying a damp mop with an absorbent mop cover, the device having a nozzle for moistening the mop cover and two rollers, one of which can be driven in the direction of rotation. The rollers are arranged in such a way that the mop cover can be passed between them and pressed or dehumidified. The mop cover is attached to a rigid flat holder of the damp mop at the bottom, with the mop cover and the holder having the same outline. The disadvantage of this is that the damp mop also strikes the rigid holder when hitting obstacles and may damage the obstacle.

The present invention has for its object to provide a damp mop of the type mentioned, which can be dehumidified in a device for pressing out the mop cover and in which the risk of damage to objects is reduced.

According to the invention, this is achieved by a device with the features of claim 1. The subclaims each define preferred and advantageous embodiments of the present invention.

According to the invention, the holder to which the mop cover is attached has a rigid core and an edge trim. The rigid core makes it possible to exert pressure on the entire surface of the mop cover and thus dehumidify the mop cover evenly over its surface. Due to the rigid core, the pressure on the holder does not necessarily have to be applied uniformly over the surface, but the pressure can also be applied only at the edges of the holder. This advantageously makes it possible to design the squeezing device for the mop cover in a more variable manner. Furthermore, this also enables a holder with a handle attached to it use, as it is very difficult to apply pressure to the holder at the necessary connection point between the handle and the holder.

The object according to the invention is also achieved by a flat holder on which a soft flat mop cover is fastened, which projects beyond the holder on at least part of the circumference of the holder. Since the mop cover is soft, it can provide protection against damage to other objects by the holder, which is usually hard to achieve sufficient stability for use in a device for squeezing out the mop cover. The mop cover preferably projects beyond the holder at those points where the holder strikes an obstacle with an increased probability.

A mop cover protruding over the holder can also be used together with a holder that has a hard core with a flexible edge cladding.

The edge trim in turn ensures that when the holder hits an obstacle, such as in particular a piece of furniture, the obstacle is not damaged by the core. The combination of the rigid core with an edge covering as edge protection can on the one hand create the necessary stability for the holder for use in a pressing device and on the other hand reduce the risk of damage to obstacles.

The core can, for example, be made of metal or a stable, in particular fiber-reinforced plastic. Furthermore, the core itself is preferably flat, so that it can advantageously be used together with a flat mop cover.

The resilient edge trim is preferably elastic and can in particular be made of a plastic material, such as an elastomer. Furthermore, the edge trim can be provided along the entire circumference of the core edge. Likewise, the edge cladding can only be provided at a few points on the core edge, in particular points that are exposed for the arrangement of an edge cladding being exposed and which are more likely to encounter obstacles when using the damp mop. The edge trim can be connected to the core by friction, for example, by clamping the edge trim around the core onto the edge. Furthermore, a groove or a depression can also be provided in the edge, in which an extension of the edge cladding is pressed. Alternatively or additionally, the edge cladding can also be fastened to the core by positive locking. For example, the edge cladding can be designed in such a way that it surrounds the core by running around the entire circumference of the core edge and protruding slightly above and below the core. Furthermore, the edge cladding can also encompass corresponding sections of the core edge, the thickness of which increases towards the outside.

In a particularly advantageous embodiment, the core is overmolded with the edge cladding, so that there is a particularly close connection between the core and the edge cladding, which leaves no gap or only a very small gap, so that no contaminants can collect between the core and the edge cladding. Furthermore, the edge cladding can be attached to the core at low cost by injection molding.

The edge trim can also completely enclose the core or be part of a shell for the core. This has the advantage that the core is no longer exposed to the environment and therefore no corrosion. In this case, an inexpensive material can be used to produce the core, which has the required mechanical properties, but can easily corrode under certain circumstances. This applies to numerous metals. Since the damp mop necessarily comes into contact with liquid and in particular with water, a completely inexpensive construction can be achieved by completely enclosing the core by using an inexpensive but corrosion-prone metal for the core, which is completely used to prevent corrosion is surrounded with a more durable material such as plastic, which also fulfills the function of edge protection.

If the core is made of a plastic, an edge covering made of plastic can also be molded on in such a way that the two plastics partially fuse with one another at the joint. This allows a part with a smooth transition between the Plastic materials and thus the material properties are created in the holder, whereby a very intimate connection between the core and the edge cladding is achieved.

The dampening mop according to the invention is particularly designed for use in a device for dehumidifying or pressing out the mop cover, the device being able to compress the holder and thus the mop cover between pressure elements and on the pressure elements acting opposite the mop cover the pressure not over the entire surface Apply the holder, but do not generate pressure at least in a region of the holder surface. This arises in the frequent cases in which the holder is connected to a handle that is not removed before dehumidification.

In particular for use with an extrusion device, the holder is preferably set up in such a way that its thickness remains constant over the surface. For this purpose, the core and its edge cladding must be coordinated with one another in such a way that the common height remains constant in the area in which the core and the edge cladding overlap. This makes it easier that in the device for dehumidifying the distance between interacting pressure elements can remain constant over the width or area and the pressure elements can be designed with a simpler shape. In order to achieve a constant thickness, the core can be made thinner in the region in which the edge cladding extends above or below it.

Different embodiments of the invention are shown purely schematically in the drawings and are described in more detail below. In it show:

Figure 1 is a schematic diagram of a flywheel drive according to the invention.

Fig. 2 is a schematic diagram of a variant of Fig. 1;

3 shows a wiper device according to the invention with an alternative flywheel drive;

FIG. 4 shows the wiper device from FIG. 3 in a different state of movement; 5 shows an alternative to the wiper device from FIGS. 3 and 4;

FIG. 6 shows an individual representation of FIGS. 3, 4 and 5;

7 shows a schematic illustration of a further alternative flywheel mass drive;

8 shows yet another schematic illustration of an alternative flywheel drive;

9 shows an example of a wheel drive;

10 is an elevation view of a wiper device;

11 shows a schematic diagram of a base station according to the invention;

12 shows a more detailed illustration of a base station according to the invention in a side view;

FIG. 13 shows an individual representation of FIG. 12;

14 shows a schematic representation of a further detail of a base station according to the invention;

15 shows a schematic representation of a further detail of a base station according to the invention;

16 shows a schematic side view of a device according to the invention for moistening a damp mop together with a damp mop according to the invention;

17 shows an enlarged partial front view of the device according to FIG. 16 together with the damp mop; 18 shows a side view of the device according to FIG. 16 during operation of the device for moistening and dehumidifying the damp mop;

Fig. 19-21 five embodiments of the wet mop according to the invention with a resilient edge trim in section;

22 shows an embodiment of the damp mop according to the invention with a mop cover protruding over the holder;

Fig. 23 -24 two further embodiments of the wet mop according to the invention.

Fig. 1 shows a schematic diagram for a flywheel drive according to the invention. In Fig. 1, 1 denotes a wiping device for wet wiping and thus cleaning floors in the household or in other interiors. It is shown in FIG. 1 as a simple cuboid. The wiper device 1 rests on a floor 2 and faces it with a wiping surface 3.

In the wiper device 1, a flywheel 4, which is only symbolically shown here, is provided, which is horizontally movably supported in a manner not shown. In the present case, it is driven by a drive motor 6 via a lever linkage 5, which is also only symbolic, against the force of a spring 7. The drive motor 6 thus tensions the spring 7 to a certain point, whereupon a triggering mechanism releases the flywheel 4 from decouples the power of the drive motor or unlocks the drive motor 6. The spring 7 can then accelerate the flywheel 4 relatively quickly, specifically to the left in FIG. 1. During this acceleration phase, there is a reaction force on the base, i.e. the remaining wiper device 1, which accelerates the wiper device 1 to the right against the static friction between the wiping surface 3 and the floor 2 in the sense of FIG. 1.

Due to the sliding friction between the wiping surface 3 and the floor 2, this movement is slowed down again after a certain sliding distance. Furthermore, the spring 7 has pressed the flywheel 4 away from itself, so that the drive motor 6 can move the flywheel 4 again via the lever linkage 5 to the right in order to tension the spring 7. However, this leads to such small accelerations of the momentum 4 to the right that the tensioning of the spring 7 does not lead to a complementary jerky movement of the wiper device 1 to the left. Through iterative repetition of the described process, the wiper device 1 thus slides piece by piece to the right, overcoming the static friction between the wiping surface 3 and the floor 2. The basic principle of the flywheel drive is explained using a model example, in particular with regard to a linear movement of the flywheel mass 4.

Alternatively, the movement of the flywheel 4 by the drive motor 6 could be used as a flywheel movement for the movement phase; the wiper device 1 then moves gradually to the left. The spring 7 is used here only as an energy store in order to bring the flywheel 4 back into the starting position for a new acceleration by the drive motor 6. The spring 7 represents energy storage devices of any type, which can also be electrical (capacitors), for example. It should be clarified that the energy for the return of the movement does not necessarily have to come from the drive motor 6.

FIG. 2 shows a very similar model case, in which the same reference numerals as in FIG. 1 are used. The difference between the mechanics shown in FIG. 2 and that from FIG. 1 is the tilting of the movement path of the flywheel 4 against the horizontal by the angle α. As a result, when the flywheel 4 is accelerated by the spring 7, a reaction force or recoil force acts on the wiper device 1, which is also tilted by the angle α with respect to the horizontal. So it has a component directed against the force of gravity. The center of gravity of the wiping device 1 thus acts not only on a horizontal power surge directed to the right but also a power surge directed vertically upwards. Clearly speaking, the wiper device 1 becomes lighter in this movement phase, i.e. the resulting force for the friction between the wiping surface 3 and the floor 2 becomes smaller. This is intended to make it clear that the design of the flywheel drive can influence when the static friction is overcome and when not, not only by occasionally larger and smaller decelerations and accelerations, but also by their direction.

A further alternative to the functions shown in FIGS. 1 and 2 is to have the flywheel 4 and the spring 7 as a non-linear oscillator perform a natural oscillation by the drive motor 6, preferably in a a near resonance state. In the variant from FIG. 2 inclined by the angle α, the desired adhesion phases and sliding movement phases already result due to the different influence of the static friction in the two reversal points of this vibration. In the variant from FIG. 1, the flywheel 4 could, for example, be braked relatively hard at one of the two reversal points, for example by an elastic wall (not shown) or another comparatively harder spring. There would then be correspondingly large retarding forces with which the static friction can be overcome.

Fig. 3 illustrates another embodiment of a flywheel drive. Here two flywheels 4a and 4b are provided, which are mounted eccentrically and rotatably. The axes of rotation of this rotary movement are designated by 8a and 8b. The two flywheels 4a and 4b rotate synchronously and in opposite directions. It can be seen that the planes of rotation and the axes of rotation 8a and 8b are inclined. The synchronous rotary movements of the flywheels 4a and 4b are simultaneously at the top (shown in FIG. 3) and bottom apex. At the highest vertex, the centrifugal forces add up with a gravitationally reducing vertical component and a horizontal component. The horizontal components are labeled Fi and the vertical components are labeled F ₂ . The inclined centrifugal force, however, with F _z . The centrifugal forces can thus move the wiper device, designated 9 here, to the right by a certain sliding distance. The centrifugal forces also add up at the lowest apex of the rotational paths of the inertial masses 4a and 4b, but here they increase the force resulting from the gravitational force of the wiping device 9 and the vertical component of the centrifugal forces, which is essential with regard to static friction. Due to the opposite rotation of the two centrifugal masses 4a and 4b, the inertial forces in the remaining area of the respective tracks at least partially compensate, so that the static friction is not exceeded there either. Rather, the sliding phase only affects a certain temporal environment of the state from FIG. 3. With a suitable design, ie coordination between the friction coefficients, the masses, radii and speeds as well as the path tilting angles of the flywheels 4a and 4b, the wiping device 9 can be achieved in these lowest vertices just remain due to static friction. In this embodiment, the iterative sliding phases can thus be achieved by a continuous circular movement of the flywheels. Fig. 4 shows the standstill phase. Here, the centrifugal masses are at the lowest apex of the respective circular movement.

FIG. 5 shows a further wiper device 10 with a flywheel drive, which is shown only symbolically here, and which corresponds to the explanations for FIGS. 3 and 4. An electronic control 11 with a microprocessor for program control of the wiping device, a memory, an evaluation device for position and acceleration sensors or for collision sensors, which are arranged on the side edges of the wiping device 10 but not shown, and an electronic system for monitoring, are shown symbolically the power electronics designated 12, which controls the charging and discharging processes of electric accumulators and the motor drives of the flywheels 4a and 4b. The electrotechnical details of such a control are readily clear to the person skilled in the art.

The wiping device 10 from FIG. 5 also shows not only a wiping textile 13 on its underside, the underside of which forms the wiping surface currently being used, but also a further wiping textile 14 on the top that is not used in the state shown. The wiping device 10 can thus either be used by the user by hand or by a base station, which will be explained later, in order to be able to continue wiping with the second wiping textile 14 if the other wiping textile is dirty or used up. The wiper device shown here has a numerical ratio of the edges in the projection onto the floor of approximately over 3: 1. This makes it easy to clean tight spaces and, on the other hand, to achieve effective web widths on large areas.

FIG. 6 shows a top view of a gimbal mounting of the flywheels 4a and 4b from FIGS. 3 to 5. With 9 and 10 the "fixed" base of the corresponding wiper device is indicated. The line of sight is from above to the floor level. A first axis of rotation 15 holds a first gimbal ring 16, to which a second axis of rotation 17 is attached, which is rotated by 90 ° to the first axis of rotation 15. The second axis of rotation 17 holds a second cardiac ring 18, on which the flywheel 4a or 4b is rotatably mounted about the axis of rotation 8a to 8b. The flywheel 4a or 4b is preferably driven by motor in the cardan bearings provided electric motors or also by flexible shafts, which are brought from motors fixed to the base 9, 10, but are not shown in the drawing. The gimbal bearing with the axes 15 and 17 can be adjusted by servomotors, also not shown, via lever linkages with levers attached to the rings 16, 18 on the axes of rotation 15 and 17, respectively.

Together with the explanations for the previous FIGS. 3 to 5, it follows that the wiping device 9, 10 can be adjusted to different friction conditions between the respective wiping textiles or other wiping surfaces and different floors by adjusting the rotational speeds and the rotational planes, even if these are direction-dependent , In particular, the electronic control 11 can detect when the wiper device 9, 10 is moving and, for example, by increasing the tilting of the rotation planes, strive for a state in which the static friction is overcome in phases and still exists in phases. Furthermore, the wiper devices 9 and 10 can move in any horizontal direction as a result of the gimbal mounting. It can also be easily imagined that by separately controlling the rotation planes and / or the rotation phases of the two flywheels 4a and 4b, the wiping device 9, 10 can also be rotated about a vertical axis by, for example, reducing the centrifugal forces of the flywheels at maximum gravity-reducing Vertical component are opposite or the overlays with the gravitation are different on both be. Of course, any overlays from rotary and translatory movements can also be achieved.

For an angular momentum drive one would have to protrude in Fig. 3 and the following figures instead of the eccentrically suspended centrifugal masses gyroscope with a concentric center of gravity. Their angular momentum could, for example, be essentially horizontal and, due to jerky changes compared to the original position, could act as an angular momentum acting on the base with a vertical direction. This vertical angular momentum could rotate part of the wiper. If at the same time an angular momentum component with a horizontal direction provides weight to one end, this could serve as an axis of rotation for a pivoting movement of the wiper device. Subsequently, with the opposite direction of rotation and at the corresponding other end of the Weighting device made a further step can be done so that there is an iterative means of transportation.

The drives described are all arranged inside and above the wiping surface.

7 shows a further rotary movement of a flywheel 19. The flywheel 19 is mounted eccentrically in a planet gear 20, the center of gravity being designated by 21. The planet gear 20 runs on a fixed sun gear 22, the center point of the planet gear describing a circular path, but the center of gravity 21 a dashed elliptical path 23. In the present case it can be imagined that the axis of rotation of the planet gear is driven by a belt drive designated by 24 is. 7 only serves to illustrate the fact that centrifugal forces of different magnitudes can already be achieved at different times with the trajectory of the center of gravity of the centrifugal mass. In addition, the flywheel mass can of course also be accelerated or decelerated in its path motion. In addition, the possibilities already mentioned of mutual compensation of inertial forces of two or more flywheels come into consideration.

As a result of an alignment of the longitudinal axis of the elliptical path in FIG. 7, an inertia drive would be achieved with this drive even without inclined position of the path and with only one flywheel 19.

8 shows a further example of a basic possibility of a flywheel drive. A wiper device is symbolically indicated at 25 in plan view. A bearing 26 is provided therein, in which an eccentric crescent-shaped flywheel 27 is rotatably guided. A movement of the flywheel 27 can be achieved via a lever linkage (double crank with joint) 28 via a motor connected to point 29. This movement is uneven at a uniform engine speed and accordingly likewise leads to an inertial drive of the wiper device 25 with sliding phases and sticking phases. Fig. 9 shows an alternative drive, so no embodiment for a flywheel drive. Here, a wheel drive is provided within a wiper device 30 and is arranged within the wiper surface (corresponding to the wiper device 30 in the plan view from FIG. 9), in which two wheels 31 and 32 can be driven independently of one another and rotated relative to the wiper device 30. The wheels are shown in two different positions, but there are two wheels in total. As a result, the wiping device 30 can be transported with its wiping surface over the floor, any direction of movement and also rotations of the wiping device 30 being caused by speed differences between the wheels 31 and 32 and by motorized adjustment of the angle of the axes of rotation of the wheels 31 and 32 relative to the wiping device 30 around their own axis. It must be ensured that the frictional connection between the wheels 31 and 32 and the floor is sufficiently high in relation to the sliding friction on the wiping surface thereon.

FIG. 9 illustrates in particular that an arrangement within the wiping surface is also possible with this drive, and any traces on the floor which may be caused by the wheels 31 and 32 can be wiped away regardless of the direction of movement. The wiping area is namely a closed area around the drive.

In particular in connection with the wheel drive, provision can be made for the wiping surface to rotate in relation to the drive or to vibrate in another way in order to increase the mechanical cleaning effect. A flywheel can also be used for this. In addition, the flywheel drives can of course be supplemented accordingly in the various examples.

10 shows a front view of a wiping device 33 which has a wiping textile 34 which projects beyond the lateral edge of the actual wiping device 33. This wiping textile 34 serves as edge protection and furthermore limits the dimensions of the wiping device 33 in the projection onto the floor. This allows particularly efficient wiping along wall edges without the risk of damage due to the wiping device 33 bumping. The wiping devices can, of course, also have appropriate bump protection edges, which also take on senor tasks, regardless of wiping textiles to inform the already mentioned electronic control 11 about a collision with an obstacle.

11 shows, as a basic diagram, a cross-sectional view through a base station 35 for regenerating the wiping device 33 in the viewing direction of FIG. 10. The wiping device 33 with the wiping textile 34 is guided between squeezing rollers 36, 37, 38. The distance between squeezing rollers 36 and 37 or between squeezing rollers 38 and 37 is adjustable so that the force with which the wiping textile 34 is squeezed out can be determined in a suitable manner. The squeezing rollers 38 press on the wiper device 33 itself and the squeezing rollers 36 on the protruding edges of the wiping cloth 34, the squeezing rollers 37 forming a counter bearing. The expressed cleaning liquid flows downwards in the manner indicated.

FIG. 12 shows a somewhat more specific training example for the base station, which is designated 39 here. The wiper device 33 from FIG. 10 or, for example, also the wiper device 10 from FIG. 5 or the wiper device 9 from FIG. 3 can be moved into the position shown on the left in FIG. 12 with the aid of its own drive. There they are gripped by two levers 40, which can be tilted by a motor in the manner shown. In the following, resiliently mounted pins, which are explained in more detail below, are engaged behind undercuts in the grooves 41 which can be seen in FIG. 12 on the respective front regions of the longitudinal sides of the wiper device 33. In this way, the levers 40 can grip the wiper device 33 and lift it in a tilting manner, as a result of which the front end of the wiper device 33 is guided between squeezing rollers 42 and 43. The squeezing rollers 42 and 43 pull the wiper device 33 further upward at an angle, the insertion pins disengaging from the catches and instead continuing to run in the grooves 41 as a guide. The wiper device 33 is transported in this way to an inclined plane 44, the squeezing rollers 42 and 43 expressing residual moisture in the wiper textile 34.

The cleaning liquid running off flows through a continuous filter 45 into a dirty water tank 46, from which the cleaning liquid correspondingly cleaned by the filter 45 is fed with the aid of a pump 47 to a nozzle 48, which cleans the cleaning liquid before cleaning and / or during the cleaning Moving the wiper device 33 back onto the wiping textile 34. The transport of the wiper device 33 is supported by a further transport roller 49. Furthermore, a fresh water tank 50 is provided, which contains clear fresh water for rinsing, for example for a final wiping cleaning, and can accordingly be connected to the nozzle 48 in a manner not shown. Furthermore, the cleaning system can perform a multiple, initially wet and then drier wiping in the manner already described.

The oblique movement of the wiper device 33 on the level 44 enables the wiper device 33 to be easily transported into the base station 39 with the aid of the motor-driven levers 40. The underside and thus the wiper textile 34 of the wiper device 33 are thus accessible and space for the components described created under level 44. The hydraulic unit on the flow filter 45, dirty water tank 46 and nozzle 48 and fresh water tank 50 can also be completely removed as a module.

The distances between the rollers 42 and 49 with respect to the rollers 43 can also be adjusted in order to ensure optimum pressing and a sufficient frictional connection for the transport. The rest of the moisture in the cleaning textile 34 can also be adjusted. The setting can be made, for example, by eccentrics in the axis of rotation bearings.

13 illustrates the latching mechanism already mentioned for gripping the wiper device 33 by the levers 40. On the lower left one of the two levers 40 can be seen, which carries at its end a pin 52 which is spring-mounted by a spring 51. It should be noted that FIG. 13 is reversed in relation to FIG. 12. It can be seen that the groove 41 already mentioned has an undercut 53 in its initial region, that is to say in the vicinity of its right end in FIG. 12 and the left end in FIG. 13, into which the pin 52 can snap. The engagement is facilitated by a bevel 54 at the beginning of the groove 41. The disengagement from the undercut can take place either by means of a similar incline with the aid of the forces exerted by the squeezing rollers 42 and 43 or with the aid of a further mechanical disengagement, which is indicated here by the motor-driven fork 55. This can grip the pin 52 and outwards out of the Pull out section 53. The pin 52 then slides along the groove 41 as a guide.

Of course, there are also other options for transporting the wiper device 33, driven by a motor, into a base station, for example through portals, cranes, elevators, chain drives, cable pulls and the like. In particular, a base station can also be designed to provide a wiper device with two wiping textiles (cf. 5) to rotate through 180 °.

FIG. 14 shows schematically that the base station 39 can also be used to replace the wiping text 34 in a second department, if necessary. FIG. 14 shows how the wiping textile 34 is pulled off two rollers 56 and 57 by Velcro fasteners (not shown in more detail) on the lower surface of the wiping device 33 and placed in a container 58. 15, conversely, shows how the or a fresh wiping textile 34 can be removed from a container 60 by a pressure roller 59 and applied to the adhesive closure. In both processes, the wiping device 33 is transported in an oblique direction, comparable to the explanations for FIG. 12. A lever mechanism corresponding to the explanations for FIG. 12 can also be used.

The various motor-operated movement steps in the base station 39 can be controlled by light barriers or similar sensors. As soon as the wiper device 33 is gripped, the typical current profiles of the electric motors involved can also be used in order to draw conclusions about the respective movement phases.

Furthermore, as already mentioned earlier, optical evaluations of the degree of soiling of the floor, the wiping cloth, the cleaning liquid in the wiping textile or also in the container 46, the degree of soiling of the filter 45 and the like can be used.

Furthermore, the base station 39 can be programmable in order to enter certain residual moisture levels, cleaning cycles, wiping textile data and the like. Wiping textiles can also contain transponders that are read in the base station. The electronic control 11 of the wiping device, which can possibly also be reprogrammed by an electronic control of the base station, can control the wiping device (in whatever specific design), taking into account known data relating to room dimensions and floor characteristics, or data determined during previous trips. The user can also specify the rooms to be cleaned and thus call up known data records or enter essential characteristics of such rooms. In addition, the wiper device can carry out an automatic position determination, for example by known odometric methods, by determining the movement distances and directions and thus determining the current positions. A position can of course also be determined in a different way, for example using laser measuring systems.

The wiping runs are preferably S-shaped with preferably the same leading longitudinal edge. This means that large areas can be cleaned with just a few trips and little overlap of the web widths recorded. The movement already described, with the front edge always remaining the same, also prevents dirt strips from being deposited in curves or corners.

A system has a base station with a motor-driven transport device, which is designed to transport the mobile device for regeneration into the base station and to transport it out of the base station.

In particular, a method for wiping floors is also presented. In the following description, however, no distinction is made between the device aspect and the method aspect of the invention, so that the entire disclosure is to be understood in terms of both categories.

The principle is to equip the base station with a motorized device for transporting the mobile device in and out, although the mobile device itself is motor-driven. In contrast to conventional systems, in which the mobile device moves to the base station with the aid of its drive and, for example, "parks" at or under corresponding connections for regeneration, the base station is provided with its own motor mechanism, the transport device. The mobile device can thus be brought into a specific position without affecting the structural design of the base station and the structural one Design of the mobile device and its drive itself should be taken into account that the mobile device must be able to get into the appropriate position with the help of its own drive. For example, the transport device of the base station can also lift the mobile device, for which the drive will not be able in many cases. Incidentally, the transport device in the base station can, if desired or required, apply relatively large forces which the motor drive of the mobile device, which is supplied, for example, by an electric battery or the like, does not, or only with a generous design which is otherwise not necessary this drive, can muster.

The mobile device preferably has a wiping textile with which it wipes the floor for cleaning or for other reasons. The regeneration then preferably includes cleaning the wiping cloth or exchanging the wiping cloth for a cleaned or a new wiping cloth. The term "wiping textile" is to be understood very generally here and can include all possible fiber-based flat products with which a floor can be wiped. So it can be nonwovens, rags, fur-like or paper-like textiles and others.

The base station preferably contains an inclined plane on which the regeneration of the mobile device takes place and to which the mobile device is therefore brought by the transport device. The inclined plane can ensure better accessibility to the underside of the mobile device and thus make it easier to clean or replace a wiping cloth or to regenerate it in some other way.

The motor-driven transport device of the base station contains at least one, preferably two levers, which are designed to grip the mobile device. The gripped mobile device is then pulled or lifted into the base station by the levers.

The one or two levers are preferably provided with a mechanism which latches on appropriately designed receptacles of the mobile device when it is gripped. The locking should preferably be released again in the further course of the transport of the mobile device into the base station, with the levers can also serve to guide the transport process in the base station after releasing the catch.

For example, the locking mechanism can be a spring-mounted pin coupling. The coupling pins can reach behind a corresponding receptacle and lock onto an undercut. The coupling pins are preferably provided on the levers and the receptacle with the undercut on the mobile device. The spring-mounted coupling pins can be released from the latching by a further mechanical device in the base station or also by an inclined plane on the device of the base station with the undercut, over which inclined plane the pins can run when appropriately directed forces are exerted , The pins can then run in a groove, for example, without a further undercut, in order to serve as a guide.

The base station preferably cleans the mobile device by passing it over a squeezing roller, through which the cleaning liquid still contained in a wiping textile or previously applied for cleaning the wiping textile is pressed out of the wiping textile, so that the associated dirt is also removed. This also applies to the squeezing out of treatment liquids that are not used for cleaning. The squeezing roller is pressed onto the mobile device with a preferably adjustable pressure. For example, the squeezing roller can be mounted eccentrically or the guide devices for the mobile device can be adjustable relative to the squeezing roller.

It is further preferred to rewet the wiping textile with a cleaning liquid or other liquid after pressing. In a special embodiment, cleaning fluid is used which is recycled in the base station, that is to say has already been squeezed out at a previous point in time. The base station can have a filter, in particular a continuous filter, for the cleaning liquid.

The new moistening can serve, on the one hand, to repeat and improve cleaning by pressing out again. Secondly, it may be desirable to moisten the wiping textile a little or to actually wet it before wiping the floor again. In particular, it is preferred that the cleaning system also has a two- or can carry out a multi-stage wiping process in that the mobile device first wipes relatively wet and then absorbs the liquid still on the floor by wiping it dry.

Furthermore, the base station can be provided with an additional device which enables a wiping text to be replaced by pulling it off an adhesive fastener (so-called Velcro fastener or the like) on the mobile device. Thereupon work continues with a new or cleaned wiping textile which is reapplied to the adhesive fastener. In this embodiment, this is done automatically by the base station.

In the system, the degree of soiling of the floor to be cleaned, the wiping cloth used, the cleaning liquid in the base station and / or the filter for the cleaning liquid can be measured and monitored, which is preferably done optically or optoelectronically.

The invention is also directed to the mobile device for wiping flat surfaces, in which the drive, when the device is moved by the drive, lies within a path width covered by the wiping surface.

In the embodiment, the drive is thus arranged within a path width that is covered by the wiping. This means in particular that the drive does not interfere outside the web width detected during wiping, for example if wiping is to be carried out just along a bottom edge. The invention enables the wiping surface to come into a relatively small distance from this edge or to wipe without such a distance, because the drive, for example a wheel running as a drive part between the track width detected by the wiping and the bottom edge, within the detected Web width is arranged.

To a large extent, the drive will lie above the surface to be wiped. In particular, the drive is preferably arranged above the wiping surface, but in principle it can also be arranged in front of or behind the wiping surface in the direction of movement, as long as it remains in the web width. This also offers the possibility of providing a relatively wide wiping area in relation to the size of the device, which is also essentially determined by the drive.

The wiper device preferably has narrow and long external dimensions in the sense of a projection onto the surface to be wiped, that is to say a significantly larger extension in one direction than in a second direction perpendicular thereto. The numerical ratio of the dimensions of the longest and the narrowest side is preferably at least 2: 1, more preferably at least 2.5: 1 and in the best case at least 3: 1. A preferred basic form of the device in the projection onto the surface to be wiped is a narrow one long rectangle. On the one hand, narrow, long external dimensions allow a relatively large web width, on the other hand, the overall device is not too large. In particular, the device can be used very flexibly when driving through narrow passages or when wiping narrow corners.

It is further preferred that the named external dimensions of the device are caused by the wiping surface, that is to say the wiping surface forms the edges of the device in the plane of the surface to be wiped or at least essentially corresponds to these. It can optionally be provided that the wiping surface, that is to say an exchangeable wiping cover, protrudes on one or more sides over other parts of the device and thus on the one hand enables particularly good wiping along bottom edges and on the other hand forms a protective abutting edge. Of course, other abutting edges can also be provided, which are not formed by the wiping surface itself. In particular, abutting edges equipped with sensory properties can also be provided in order to indicate an automatic control of the wiping device to an impact on an obstacle and thus to trigger corresponding control reactions.

In operation, the wiper device preferably moves forward in such a way that one and the same long side points forward during a wiping run. It is then wiped with the maximum possible web width and, on the other hand, the dirt pushed together during cleaning is pushed in front of it. This preferably also applies during and after cornering, so that the wiper device leaves no wiping strips in corners or curves. In particular, the wiping device can, for example, in a right-angled corner of a floor initially with the long side mentioned until it stops at the Drive the opposite edge, then drive back, turn 90 ° in the direction of the future direction of travel (so that the long side described now points forward in the future direction of travel), in this rotated position, drive along the edge again to the corner and then continue driving from the corner in the new direction of travel. A journey with the front long side in the corner would be converted into a drive with the same front long side out of the corner in the new direction of movement.

Furthermore, it can be provided that the wiping surface moves in an oscillating manner with respect to the rest of the device, for example oscillates or circles in one or two (horizontal or vertical) directions with respect to a base of the device. This means that the mechanical impact on the ground can be increased without having to run over the same track several times.

Another embodiment provides for the wiping device to be equipped with a wiping surface not only on one side but on two opposite sides. The device can then be turned by the intervention of a user or automatically in order to be able to continue with the second wiping surface.

In addition, it is preferred that the wiping surface is continuous, that is, forms a coherent surface in the mathematical sense. In addition, it is preferably closed in the sense of the direction of movement behind the parts of the drive that come into contact with the ground, so that no traces are created by wheels, drive belts and the like. Such wheels or belts are therefore preferably provided within the wiping surface or in the sense of the direction of movement in front of it or a part of it.

Furthermore, an improved drive for moving the device over a surface is provided, which has a flywheel that is movable and motor-driven relative to a base of the device and is designed to drive the device by moving the flywheel relative to the base, by at Part of these movements overcomes a static friction holding the device on the surface due to inertia of the flywheel and not with another part of these movements, the movements of the flywheel being iterative overall relative to the base. Inertia mass drive utilizes inertia forces that arise from relative movements between an inertia mass and a base that forms a fixed part of the device. In certain phases, these inertial forces result in a static friction holding the device on the surface on which it is supposed to move to be overcome. In other phases, however, the inertia forces should not overcome static friction. In the following, we shall speak in simplified terms of movement phases and phases of detention. Depending on the reference system, inertial forces are transferred to the base by the movements of the flywheel, which partly move it and partly let it adhere to the surface. In other words, the movements of the flywheel lead to a reaction of the base because the overall system tries to correspond to the conservation of momentum. However, the conservation of momentum is disturbed by the friction between the device and the surface. The base remains on the surface in the sticking phases, while it moves on the surface in the movement phases. This is preferably a sliding or sliding movement, but with corresponding static friction in the grip phases in wheel bearings or between wheel surfaces and the surface, it could also be a rolling movement during the movement phases.

Since the movements of the flywheel are ultimately iterative with respect to the base, i.e. repetitive and thus enable continued movement, an overall drive concept is created that does not require a direct positive or non-positive connection between the drive parts and the surface on which the device is to move.

It can be achieved in particular that the wiper device only touches the surface to be wiped with the wiping surface because no wheels, drive belts or the like have to be used.

For clarification, it should also be pointed out that the flywheel is part of the device and should not be used up by the drive concept. Although an energy coupling will be necessary to generate the movement, the flywheel mass should be preserved as such in contrast to recoil drives such as rocket drives or jet drives. This provides smooth or rolling locomotion without coupling between the drive and the transport surface. This can be of interest, for example, if it is difficult to establish a positive or non-positive connection with the transport surface, for example on very smooth surfaces, or if contact between the drive and the surface is not desired in the cleaning device.

There are several basic options for the type of movement between the flywheel and the base. On the one hand, linear movements are conceivable in which the flywheel is moved iteratively back and forth. By means of correspondingly strong accelerations or decelerations, inertial forces can be generated which are above a threshold determined by the static friction. With smaller accelerations and decelerations, the device remains within the static friction limits, so that the flywheel mass can be returned in favor of a new movement phase of the device.

In this context, it may be of particular interest to provide an energy store, in particular a mechanical spring, in addition to the actual motor drive of the flywheel, which spring is loaded and unloaded with energy during the linear movements of the flywheel. On the one hand, this allows at least parts of the energy expended by the motor drive to be recovered. Secondly, the acceleration phase provided for overcoming the static friction can be facilitated by the energy store with correspondingly large forces, and the motor drive itself can only be used for feedback. Thus, the drive could press the flywheel against the spring force and thereby tension the spring, whereupon the drive is switched off and the spring is allowed to accelerate the flywheel relatively violently.

Furthermore, rotary movements between the flywheel and the base are also possible. Circular movements are preferred. Two cases are conceivable in the case of the rotary and in particular the circular movements, which in principle could also occur in a mixed manner. On the one hand, the actual conservation of momentum in the sense of the linear momentum, i.e. in the sense of the centrifugal forces, can be exploited. Secondly, the conservation of angular momentum can also be used, in which the Base experiences an angular momentum when the angular momentum of the flywheel is changed. If the case of linear momentum conservation is in the foreground, the flywheel will be arranged eccentrically with respect to the rotational movement. If the conservation of angular momentum is in the foreground, the flywheel mass will be concentric with respect to the rotational rotation. In this case, the flywheel is meant in the sense of the center of gravity and not necessarily in its physical form. In the former case, for example, an increased acceleration of the flywheel could be used in certain areas of the track, for example in the case of non-circular tracks such as sun or planetary tracks, in the second case, however, the angular momentum acting on the base, for example when the direction of a concentric rotation of the flywheel changed. In both cases, a "jerk" of the base can be created, which overcomes the static friction for a certain movement phase.

It is not absolutely necessary, although preferred, that the movement phases, that is to say the “jerk movements of the base” generated by the inertial masses, are always essentially the same direction (including the same direction in the sense of rotary movements). In principle, cases are also conceivable in which the static friction is also overcome in the context of "regressions", which, however, lead to a less backward movement than the desired forward movement. For example, the flywheel drive could briefly overcome the static friction limit even with inertial forces that are basically acting in the wrong direction. In principle, if the limit of static friction in the desired direction is overcome for a longer time or at a higher speed, this does not stand in the way of locomotion.

It is particularly preferred in particular to use components of the inertial forces used to exploit the static friction between the device and the surface on which it is to move. By appropriately interpreting the movements, in particular their inclination, the device can become heavier or lighter at times and possibly also in places, that is to say it can be pressed onto the surface by appropriate inertial forces or can be relieved of gravity. As a result, in addition or as an alternative to the already mentioned use of particularly large inertial forces in certain movement phases, it is possible to distinguish between movement phases and holding phases. For example, Inertial forces which remain constant in terms of inertia in the movement phases lead to components sliding against the gravitational force, and to stick in the holding phases due to components acting parallel to the gravitational force.

The use of at least two flywheels in the above sense is particularly preferred. In addition to the aspects mentioned, this allows a clever combination of the respective inertial forces and phased addition or compensation. For example, two circularly moving centrifugal masses with an eccentric center of gravity can move in opposite directions and synchronously, so that their inertial forces compensate twice per full rotation and add up twice per full rotation. By additionally tilting the planes of rotation, inertia force components that are parallel to gravity in one case and gravitationally anti-parallel in the other case can be generated in the phases of the addition, so that the device moves only jerkily or at least more strongly in the latter case.

In the case of rotary components, the flywheels are preferably gimbally suspended from the base. This can serve to tilt the planes of rotation in the sense just described. Furthermore, in contrast to a fixed, unchangeable tilting, a corresponding adjustment of the cardanic suspensions can also be used to adjust the size of the static friction between the device and the surface and also to compensate for any directional dependencies of this static friction, for example in the case of aligned wiping textiles. The gimbal suspension is preferably set by means of a motor and in particular can also be done automatically in that the device tests the start of the movement phase to a certain extent and adjusts itself automatically to optimum propulsion for given rotational movements by adapting the tilt.

In the case of a flywheel drive by utilizing the linear conservation of momentum, that is to say also the centrifugal forces, it is preferred that the device moves step by step above the surface with translatory individual steps, with the aim of a straight movement of the device. In contrast to this, when utilizing the angular momentum conservation, it is provided to utilize an angular momentum component acting on the base in that one end of the device serves as the axis of rotation, and this is because it is "weighted down" by an angular momentum component acting parallel to the surface. In the next step, an opposite end of the device can serve as an axis of rotation and an oppositely directed and acting on the base angular momentum, ie a component perpendicular to the surface, can be used for a corresponding second step. In this case, the device would, for example, move alternately step-by-step with a right and a left side and thereby rotate about the other side. The angular momentum components can be generated either by tilting rotating gyroscopes or - less preferably - by accelerating or braking such gyroscopes.

Incidentally, the device does not necessarily have to be free of other drive or steering influences. For example, in the case of the preferred use as a cleaning device, it may also be desirable to provide an operator with an influence on the movement, for example by applying a style for steering or also for supporting the movement. A motorized mop with style would make it easier for a cleaning person to slide the mop over the surface to be cleaned on the one hand, on the other hand the mop could also be much heavier and therefore more effective in terms of cleaning effect than a conventional manually operated mop. However, an autonomous and automatically moving cleaning device with the flywheel drive described is preferred.

A device 104 for moistening a damp mop 101 is shown schematically in FIG. The damp mop 101 has a holder 102 fastened to a handle 118 for holding a mop cover 103. The mop cover 103 is flexible and absorbent, so that it can be moistened with a cleaning liquid, in particular for cleaning floors.

For moistening, the dampening wiper 101 is guided in the direction of the arrow by the device 104 through a guide 113 which has individual guide elements in the form of horizontally arranged metal sheets. The guide 113 guides the holder 102 horizontally along a horizontal movement path over a nozzle 112. The nozzle 112 is connected via a liquid line 111 to a pump 108 which is arranged at the bottom at the bottom of a container 105 which forms the base of the device 104. By doing Container 105 contains a cleaning liquid 106 which can be sucked in by pump 108 via an inlet filter 107 and pumped through line 111 to nozzle 112. The liquid 106 can be sprayed from below against the mop cover 103 of the damp mop 101 through the nozzle 112.

A sensor 114 is provided in the guide 113, for example in the form of a switch, which detects the presence of the holder 102 in the guide 113. As soon as the holder 102 is inserted into the guide 113 and this has been detected by the sensor 114, a control (not shown) controls the pump 108 so that the liquid 106 is sprayed upward through the nozzle 112. At the same time, a motor-driven drive roller 110 is actuated, which is arranged below the movement path. On the side of the movement path opposite the drive roller 110, two counter rollers 109 are arranged, which are arranged coaxially to one another and are rotatable about an axis of rotation which is parallel to the axis of rotation of the drive roller 110. The holder 102 can thus be pulled together with the mop cover 103 between the drive roller 110 and the counter rollers 109.

The distance between the drive roller 110 and the counter rollers 109 is dimensioned such that the holder 102 with the mop cover 103 is in frictional engagement with the rollers 109, 110, so that it can be gripped and driven in a drive direction.

In FIG. 17, the part of the device 104 for pressing out the mop cover 103 is shown enlarged from the front. The drive roller 110 extends across the entire width of the mop cover 103 perpendicular to the drive direction, so that it bears against the mop cover 103 over the entire width at the bottom. The two counter rollers 109 are arranged such that they are arranged over the edges of the holder 102 in the width dimension of the holder 102 and leave a space between them. The space between the rollers 109 serves to pass the handle 18 of the damp mop.

As shown in FIG. 18, the pressure of the drive roller 110 partially dehumidifies the wiping cover 103, or liquid is pressed out of the wiping cover 103. The pressed-out liquid 106 runs onto an intermediate floor 117 and from there through a dirt filter 115 back into the container 105. When the wet mop 101 is passed through the guide 113, as shown in FIG thus the mop cover 103 is sprayed with the cleaning liquid 106 from below, so that the mop cover 103 can be moistened and the dirt therein can be rinsed out, and then partially dehumidified again so that it emerges on the right side of the device 104 with a defined moisture content. This means that the mop cover 103 does not drip when cleaning. The controller also detects when the holder 102 releases the sensor 114 or when the rear end of the holder 102 has passed the sensor 114 and then controls the pump 108 and the drive roller 110 for a certain period of time until the holder 102 is complete has been pulled through the rollers 109, 110. The activation of the pump 108 can also be ended before the activation of the rollers 109, 110.

FIGS. 19 to 22 show different embodiments of the wet mop 101 according to the invention, the holder 102 of which has a flat core 119, on the edge of which an edge covering 120 is arranged. Edge trim 120 may extend around the entire circumference of core 119 in all embodiments.

In all of the described embodiments, the core 119 can be formed by a metal plate. The thickness and the material properties depend on the forces acting on the holder 102 when the mop cover 103 is pressed out, which in turn depend on the design of the device 104, among other things. The core material is also selected so that it is resistant to the liquids or cleaning agents used in cleaning. This applies at least to the sections of the core 119 which come into contact with the cleaning agents in question. The core 119 can also be provided with a protective layer.

FIG. 19 shows the holder of a damp mop according to one embodiment in section. In this case, the edge trim 120 has a U-profile and is plugged with the open side onto the edge of the core 119. The U-profile of the edge trim 120 is set up in such a way that it clamps on the edge of the core 119 by none or only one to leave a very small gap between the core 119 and the edge trim. The edge covering 120 completely surrounds the edge of the core 119, so that the edge covering 120 extends over the entire circumference of the edge of the core 119. The edge trim 120 can be attached as a profile, but a joint in the edge trim 120 is generally unavoidable. In an advantageous embodiment, however, the edge trim 120 can be formed directly on the edge of the core 119. This results in a better connection and a narrower gap between the core 119 and the edge covering 120 and a seamless edge covering 120 can be achieved in this way. The core can do this

1 19 are in particular overmolded with the edge trim 120 if the material of the edge trim 120 permits. Furthermore, the edge cladding 120 can also be applied by immersing the edge of the core 119 in the corresponding liquid material which later hardens or solidifies.

The aforementioned options for the manufacture or attachment of the edge trim

120 can also be used in the following embodiments in FIGS. 20 to 22.

In the embodiment according to FIG. 19, the edge covering 120 also projects downward at the edge of the core 119 and thus prevents a flat underside of the holder 102. The mop cover 103 is thus pressed downward more strongly at the edges of the holder 102. This can be prevented by making the mop cover 103 thinner and / or more compressible at the corresponding points.

A further embodiment is shown in FIG. 20, in which the edge trim 120 basically has the same configuration as in the embodiment according to FIG. 19. In this embodiment, the edge of the core 119 is made thinner in the region in which the core 119 is covered by the edge covering 120. The edge is made thinner by the thickness of the material of the edge trim 120. The holder 102, which is composed of the core 119 and the edge covering 120, thus has a constant thickness over its entire surface. This has the effect that a flat surface acts on the wiping cover 103 from above and exerts a constant surface pressure when wiping. Furthermore, when the mop cover 103 is pressed out, a constant surface pressure can be exerted on the mop cover 103 with less effort if the holder 102 has a constant thickness over the surface.

Furthermore, a further embodiment is shown in FIG. 21, in which the edge cladding 120 only covers the core 119 on the sides. The edge trim 120 protrudes not above or below the top or bottom of the core 119, so that the core 119 can be made with the same material thickness over its entire surface and nevertheless the holder 102 has a constant thickness over its surface if the height of the edge trim 120 is high of the core 119 is adjusted. For fastening, in the illustrated further embodiment, a notch is formed in the end faces of the core 119 along the entire circumference, into which a projection extends horizontally, which is formed on the side of the edge trim 120 facing the core 119. The projection in turn can have flexible clamping projections in order to be able to be clamped in the notch for fastening. In addition, this protrusion for clamping in the notch can also be hollow and compressible.

A further embodiment is shown in FIG. 22, in which the edge of the core 119 has, on the top and the bottom, in particular circumferential depressions into which the edge cladding 120 extends with projections directed downwards or upwards. The edge trim 120 encompasses the edge of the core 119 as in the embodiment according to FIG. 19. In addition, the edge of the core 119 is set back from the top and bottom of the edge trim 120, so that the thickness of the core 119 together with that of the core 119 edge covering 120 overlapping in the edge region remains constant. This results in the advantage that the height of the holder 102 remains constant and that the edge trim 120 is additionally better fastened to the core 110.

A further embodiment is shown in FIG. 23, in which the edge cladding 120 completely surrounds the core 119 and thus also extends over the underside and the top thereof. This causes the core 119 to be completely enclosed and not to be exposed to corrosive environmental influences. The core 129 can also be made of materials which are attacked by the substances acting on the damp mop 101 during operation. In this embodiment, the material of the core 119 need only have the required strength. The core 119 is preferably extrusion-coated by the edge covering 120 or its material, so that there is a seamless covering. The core 119 can consist of a metal and the edge cladding 120 of a plastic that is suitable for injection molding. FIG. 24 shows a further embodiment of the present invention, in which the edge protection is achieved by a protruding mop cover 103, which forms a damper for the core 119 as soon as the holder 102 hits an obstacle, since the holder first hits the obstacle with the protruding edge of the mop cover 103 touches. In addition, the edge of the mop cover 103 bulges upward when it hits an obstacle and thus gets between the obstacle and the core 119, so that there is additional damping of the impact.

Claims

claims

1. Damp mop (101) with a holder (102) for attaching a mop cover

(3), characterized in that the holder (102) has a flat and rigid core (119) and a resilient edge covering (120) which is arranged along at least part of the edge of the flat core (119), and / or in that the mop cover (103) projects beyond the holder (102) on at least part of the circumference of the holder (102).

2. Wet wiper (101) according to claim 1, characterized in that the core

(119) is made of metal.

3. Damp wiper (101) according to claim 1, characterized in that the core (119) consists of plastic.

4. Damp wiper (101) according to claim 3, characterized in that the core (119) consists of fiber-reinforced plastic.

5. damp mop (101) according to claim 3 or 4, characterized in that the edge trim (120) is made of plastic and with the plastic material of the core

(119) is fused.

6. Wet wiper (101) according to one of the preceding claims, characterized in that the edge trim (120) extends over the entire circumference of the edge of the core (119).

7. damp mop (101) according to any one of the preceding claims, characterized in that the edge covering (120) completely encloses the core (119).

8. damp mop (101) according to any one of the preceding claims, characterized in that the core (119) with an edge trim (120) is molded from plastic.

9. damp mop (101) according to any one of the preceding claims, characterized in that the holder (102) is flat and its thickness is constant over its area.

10. Damp wiper (101) according to one of the preceding claims for use with a device for pressing out the mop cover of the damp mop, the device having a squeezing device with two pressure elements, one of which on the side of the holder (102) opposite the mop cover (103) on the edges of the holder (102).

11. Wet wiper according to one of claims 1 to 10, characterized in that the wet wiper is designed as a mobile wiper device (33) with its own drive and that the wet wiper starts a device (4) for regenerating the wet wiper automatically and can be regenerated automatically.