EP0950370A2 - Floor cleaning machine - Google Patents

Abstract

The machine has two cylinder brushes (3,4) driven by toothed belts (23,24). Drive shafts (17,18) from an electronically controlled synchronous motor (6) and gearbox (16) assembly rotate in opposite directions.

Description

The invention relates to a drive system for two counter-rotating cylinder brushes a floor cleaning machine comprising an engine, a transmission and transmissions to transfer the torque from the gearbox to the cylinder brushes.

Floor cleaning machines comprising two counter-rotating cylinder brushes are on known. They have an axis of rotation arranged between the cylinder brushes rotating, also higher than the axes of rotation of the cylinder brushes Drum on.

Water is applied to the floor to be cleaned or to one of the brushes along with the dirt swept up by the brushes towards the Drum surface is thrown. This forms on this drum Water film, which the dirt lifted from the floor on the surface of the drum holds. There are also facilities for lifting this contaminated water film from the Drum and intended for forwarding into a dirty water tank.

The invention is based on the general aim of a new one compared to the previously known Construction methods improved construction method for such Floor cleaning machines to be specified. This goal is achieved by some, explained below Construction details reached.

The first essential detail is the drive system. As already mentioned, this includes an engine, a transmission and transmissions for the transmission of the Torque from the gearbox to the cylinder brushes. According to the current state of the art the gearbox was equipped with only one output shaft. To transfer their The drive movement on the two cylinder brushes was one for each cylinder brush multi-stage gear transmission, i.e. several gears, their axes of rotation parallel to each other run and interlock, used.

A disadvantage of this solution, in particular, the multi-stage Brush drive proved, because this brought a considerable reduction in Drive system efficiency and a not inconsiderable noise level yourself.

It is therefore an object of the invention to avoid these disadvantages and a drive system of the type mentioned at the outset, which has a particularly high efficiency having.

According to the invention this is achieved in that the gearbox for each cylinder brush has separate output shaft.

This means that both cylinder brushes can work directly and independently of one another with the gear unit connected, the failure of one drive connection has no influence on the other Drive connection. The direct connection of each brush to the gearbox leads to this required high efficiency.

According to a particularly preferred development of the invention, it can be provided that the transmissions on the output shafts and on the shafts of the cylinder brushes Toothed pulleys and toothed belts, each comprising an output shaft pulley connect with a cylinder brush lock washer.

Such a toothed belt drive is very effective and thus helps to achieve a high level Efficiency at. In addition, he develops very few noises, so that the total of noise level emitted by the cleaning machine can be kept low.

In a further embodiment of the invention it can be provided that on an output shaft a further toothed pulley is fixed, which with another toothed belt the drive shaft of a drum toothed pulley is connected.

This means that the drum drive is also independent of the brush drives, if any Failures of the brush drives cannot override it. By design the drum drive as a toothed belt drive is again high effectiveness and low Noise development ensured.

Another feature of the drive system according to the invention can be that the transmission a pinion fixed on the motor output shaft and two meshing with this pinion Primary gears and a secondary gear meshing with one of the primary gears has, wherein the first output shaft with one of the primary gears and the second Output shaft is connected to the secondary gear.

This design allows the two required opposite to each other To achieve rotary movements with particularly low component costs. The output shafts of the transmission are only one stage or two stages with the motor pinion connected, which further contributes to the high overall efficiency of the drive system represents.

In this context, a further embodiment of the invention can provide that pinions, primary and secondary gears are formed by steel spur gears.

This ensures a long service life for the gears.

It has proven to be particularly favorable that the pinion, primary and secondary gears are inclined are toothed because gear equipped with such gearwheels is particularly little Generate noise.

Furthermore, it can be provided that the toothed disks of the transmissions made of steel, Aluminum, plastic or the like.

Steel toothed washers have a particularly long service life, which is what The susceptibility to repairs of the cleaning machine according to the invention is effectively reduced. Of the The advantage of plastic and aluminum gears is particularly that of them achievable particularly low noise levels.

In a preferred embodiment of the invention it can be provided that the motor is formed by a synchronous motor.

Motors of this type can be controlled with relatively simple circuits become. Apart from this advantage, there is also the choice of synchronous motors Consideration that a high number of revolutions of the brushes is required to grow floors becomes.

These high speeds can be easily achieved with the help of synchronous motors so that the cleaning machine according to the invention for growing floors, especially of marble floors.

It can be advantageous to have an electronic speed control device for the engine to be provided because the cleaning machine is the one given in practice different dirt conditions can be easily adapted. Besides can smoothly start the engine using a speed control device what has a positive effect on its lifespan.

Another essential detail of the floor cleaning machine according to the invention is the Scraper device with which the dirty water film applied to the drum is lifted off and directed into a dirty water tank.

It is known to use such a scraper device for a floor cleaning machine at least one rotating brush, preferably a cylindrical brush and with a rotating one Drum, on which a film of water is arranged, with that of the brush swept dirt is offset, which scraper dirty it Water film lifts off the drum and directs it into a dirty water tank as one Extending over the entire drum width, lying on the outer jacket of the drum Train ledge.

This bar was made according to the prior art by means of a large number of each other spaced and acting on the bar springs against the Drum surface pressed. This merely punctiform pressing of the bar proved as problematic in that the water film is only properly removed from the section Drum surface lifted, but in the other sections (in time) before Take off (spatially) in front of the bar was stowed. That was the correct one Dirt removal significantly impaired.

It is an object of the invention to provide a stripping device of the type cited in which avoided this disadvantage and a clean lifting of the water film over the entire drum width is ensured.

According to the invention, this is achieved by covering essentially the entire area Strip length extending rigid strip holder, which by means of at least one spring in Is pressed towards the drum surface.

This rigid strip holder guides the spring force evenly over the entire length the bar, so that this with constant pressure over its entire length to the Drum surface is pressed. Local congestion in the water film different contact pressures can thus be reliably avoided.

It has proven to be particularly favorable that the strip holder is pivotably mounted and the spring swings its part carrying the bar towards the drum surface.

This type of storage can be implemented with particularly simple means.

According to a particularly preferred development of the invention, it can be provided that the strip holder is fixed against rotation on a pivot shaft, which the Front sides of the last holder are superbly designed and in side parts of the Floor cleaning machine is mounted and that on at least one, a side part protruding end of the pivot shaft a lever is fixed, on which lever the acts at least one spring.

The spring acting on the last holder can be attached to the side part, whereby the structure of the floor cleaning machine is kept much easier than if the spring would be attached to the drum.

Another feature of the invention can be that the spring is formed by a compression spring is whose first end is supported on the side part and the other end is supported on the lever.

Such springs are common standard components, their use helps the manufacturing costs of keep floor cleaning machine according to the invention low and contributes to the other maintainability.

According to one embodiment of the invention it can be provided that the compression spring in a hollow cylindrical housing that is closed on one side, which Housing is pivotally mounted on the side part parallel to the plane of the side part, whereby the compression spring with its first end at the bottom of this housing and with its second End on a pivotally mounted piston protruding into the housing supports.

The compression spring is thus encapsulated in a dustproof manner and well protected against environmental influences. Another way of designing the spring can be that the spring through a tension spring is formed, the first end on the side part and the second end on the lever is set.

Such springs are also common standard components, so that even when using this type of spring the machine is easy to maintain and the manufacturing costs are low being held.

A previously known scraper device for a floor cleaning machine with at least a rotating brush, preferably a cylinder brush, and a rotating drum, on which a film of water to absorb the dirt swept up by the brush is arranged and the dirty water film lifts from the drum and in leads a dirty water tank has the following further disadvantage:

The dirt, especially long-fiber dirt, accumulates on the bar and piles up is there, is not immediately led into the dirty water tank. Said Piling up often leads to a blockage of the stripping device and thus to one Interruption of the cleaning function.

It is an object of the invention to provide a new design for a stripping device specify where immediate transport of dirt into the Dirty water tank is ensured.

According to the invention, this is due to an essentially the entire drum width extending, rotating and with their free bristle ends on the drum surface adjacent cylinder brush reached.

With this, basically different from the previously known stripping device Dirt is lifted from the drum surface and at the same time into the dirt container hurled. Problems with dirt build-up are thus avoided from the start.

Another essential detail of the floor cleaning machine according to the invention relates a handle attached to it, which is primarily for the manual movement of the Machine serves. A stick for a floor cleaning machine that has a motor, preferably electric motor, for driving cleaning devices, such as Cylinder brushes, as well as at least one switch for switching the motor on and off according to the prior art is used to said switch to operate part of the stem.

Specifically, it is intended to close the switch by pivoting the entire handle press, i.e. is e.g. the handle is normal to the floor, is the switch switched off, the handle is pivoted through a certain angle, the switch is in brought its ON position and the drive of the floor cleaning machine starts.

The disadvantage of this solution is that the machine is started up unintentionally can come when the machine is only to be moved using the handle.

It is an object of the invention to provide a handle of the type mentioned, which can be pivoted as required regardless of the switch actuation.

According to the invention, this is achieved in that the switch is fixedly attached to the handle and that the stem part for actuating the switch by a pivotable on the stem stored lever is formed.

The control of the switch is thus completely independent of the pivoting angle of the Stieles, the discussed disadvantages resulting from this dependency are complete avoided.

According to a particularly preferred embodiment of the invention, that the lever has a pivot shaft mounted on the stem that on the Swivel shaft an actuator is defined per switch and that that Actuator of the switch lying in the swivel path of the actuator on Stem is attached.

This allows the switch to be placed within the stem, making it effective before Environmental influences is protected.

In a further development of this embodiment it can be provided that the actuator is formed by an eccentrically fixed to the pivot shaft cylindrical disc.

With such a configuration of the actuating member there is a soft and therefore for the Switch lifespan favorable depression of the actuating element.

Another feature of the invention can be that the at least one switch by a Microswitch is formed, the actuating element is a lever.

Microswitches are common standard components, their use helps to reduce the cost of production keep floor cleaning machine according to the invention low. Show further Microswitch has a long service life, resulting in high operational reliability Floor cleaning machine leads.

The invention further relates to a handle for a floor cleaning machine, which cleaning devices coming into contact with the floor, in particular Cylinder brushes, as well as a chassis, whose wheels in opposite to the Cleaning devices movable wheel suspensions are stored so that the wheels over the portion of the cleaning devices coming into contact with the ground can be raised or under the section of the Cleaning devices can be lowered, which lifting by means of a part of the handle is feasible.

Specifically, according to the prior art, the wheel suspensions are provided by the To raise or lower the pivoting of the entire handle, i.e. is e.g. the stem Aligned normal to the ground, the wheel suspensions are lowered, the When the arm is pivoted through a certain angle, the wheel suspensions are raised.

The disadvantage of this solution is that it causes the undercarriage to be raised unintentionally can come when the machine is only to be moved using the handle.

It is an object of the invention to provide a handle of the type mentioned, which pivoted as desired regardless of the raising or lowering of the wheel suspensions can be.

According to the invention this is achieved in that the stem part for performing the Lifting is formed by a pivotally mounted lever on the handle, and that Cable hoists are provided, the first ends of which on the wheel suspensions of the chassis and the second ends of which are attached to the lever.

This means that the wheel suspensions are raised completely independently of the swivel angle of the stem that are discussed are disadvantages arising from this dependency completely avoided.

According to a particularly preferred embodiment of the invention, that the lever comprises a pivot shaft mounted on the handle and that the second ends the cables are fixed on the outer surface of the swivel shaft.

So that the cables can be arranged running inside the handle, whereby they are effectively protected against environmental influences.

It has proven to be advantageous that on both sides of the fixing points of the cables on the Swivel shaft discs are attached because this ensures particularly good guidance of the Cables can be reached.

The invention further relates to a floor cleaning machine with at least one rotating brush, preferably cylinder brush and with a rotating drum which is arranged a film of water with the dirt swept up by the brush is offset, and with a nozzle, by means of which the water forming the water film the floor to be cleaned or at least one rotating brush can be applied.

In all previously known floor cleaning machines, the nozzles are for application of the water forming the water film rigidly attached to the machine and either aligned that their jet cone entirely on the floor to be cleaned or entirely hits a brush.

However, the place where the water is to be applied is of the type of the floor to be cleaned dependent: In the case of highly absorbent floors, such as carpets, the water must be on the brush, for non-absorbent floors, such as tiled floors, concrete or Parquet floors, it is cheaper to apply the water to the floor itself.

Thanks to the rigid attachment of the nozzles on the floor cleaning machine that has been practiced up to now the area of application of the respective machine was restricted to a certain type of soil. It is an object of the invention to provide a floor cleaning machine of the type mentioned specify which can be used equally for absorbent and non-absorbent floors.

According to the invention, this is achieved in that the nozzle is approximately normal to it Spray cone axis of symmetry pivotable on the Floor cleaning machine is set.

This allows the user to easily locate the nozzle spray cone change and according to the relevant requirements of the choose cleaning floor.

In a further development of the invention it can be provided that the nozzle has at least one locking lug which is provided on the floor cleaning machine in the region of the nozzle Interlocking recesses interact.

This ensures that the nozzle is not affected by the hydraulic and Recoil forces is pivoted, but always in the position chosen by the user remains.

In addition to a floor cleaning machine, the present invention also has one Transport cart with wheels and a handle for a floor cleaning machine, executed in one of the ways described so far, the subject.

So far there are no specially designed for floor cleaning machines in the prior art Trolleys known. So you had to move floor cleaning machines So far, use the chassis specified on it - if such exists at all was - or you had to have ordinary trolleys comprising one frame, four Insert wheels, a loading surface and a handle. Proved to be problematic the first possibility of moving on the relatively small wheels of the machine's own Undercarriages. They designed to drive over obstacles, e.g. Thresholds or lower levels difficult.

This disadvantage occurs with the transport carts listed as second because of their not much larger wheels. The disadvantage of this type of onward movement is Floor cleaning machine, however, the fact that the machine manually on the and must be lifted off the loading area. This work is time consuming and physical exhausting.

It is an object of the invention, a simply constructed trolley of the type discussed specify with which a floor cleaning machine on particularly simple and ergonomically favorable way can be taken up or put down.

According to the invention this is achieved in that the trolley has a frame with a Includes wheel axle bracket on which the handle, support struts and support rods, which can be brought into engagement with recesses provided in the floor cleaning machine are, are fixed.

This particularly uncomplicated structure leads to simple manufacture of the Transport cart, which can keep their production costs low. Besides Such a trolley has small dimensions and thus requires little space on. Due to the fact that mounting rods attached to the trolley Recesses of the floor cleaning machine can be brought into engagement, this needs Machine neither to be placed on the trolley nor to be removed from the The trolley can be lifted by hand.

In a further development of the invention, it can be provided that holders for Spare parts for the floor cleaning machine, especially for replacement cylinder brushes are arranged.

This ensures that important spare parts are defined and the user of the Floor cleaning machine can be stored in known places so that they can be used at any time are tangible.

Furthermore, at least one connecting device, such as a rope, rigid bracket, can be provided or the like, which one end on the frame and the other end on the trolley recorded floor cleaning machine can be determined.

This means that the floor cleaning machine to be transported can be safely carried on the trolley be determined.

Fig. 1 eine erfindungsgemäße Bodenreinigungsmaschine schematisch in Seitenansicht;

Fig.2 die Bodenreinigungsmaschine nach Fig. 1 schematisch von unten betrachtet;

Fig.3 eine besonders bevorzugte Ausführungsform einer erfindungsgemäßen Bodenreinigungsmaschine im Seitenriß;

Fig.3a die Maschine in der Darstellung gemäß Fig.3, wobei die Feder 67 anderen Typs ist;

Fig.4 den Schnitt entlang der in Fig.3 eingezeichneten Linie A-A;

Fig.5 den Schnitt entlang der in Fig.3 eingezeichneten Linie B-B;

Fig.5a die Darstellung gemäß Fig.5 mit einer anderen Möglichkeit der Befestigung des Motors 6 an den Seitenteilen 1,2;

Fig.6 den Schnitt entlang der in Fig.3 eingezeichneten Linie C-C;

Fig.7 den Motor 6 mit angeschlossenem Getriebe im Aufriß teilweise im Schnitt;

Fig.8 den Seitenriß des Motors 6 in der in Fig.7 mit X bezeichneten Blickrichtung;

Fig.9 den Schnitt entlang der in Fig.8 eingezeichneten Linie C-D;

Fig.10 den Seitenriß des Motors 6 in der in Fig.7 mit Y bezeichneten Blickrichtung;

Fig. 11 die erfindungsgemäße Bodenreinigungsmaschine gemäß Fig. 12 im Seitenriß;

Fig.12 den Schnitt entlang der in Fig. 11 eingezeichneten Linie E-E;

Fig.13 die Trommel 5 mit einer ersten erfindungsgemäßen Ausführungsform einer Abstreifeinrichtung im Detail im Aufriß;

Fig.14 die Stirnseite des Leistenhalters 59 gemäß Fig.12 und 13;

Fig.15 den Schnitt entlang der in Fig.ll eingezeichneten Linie E-E, wobei die durchschnittene Bodenreinigungsmaschine mit einer zweiten erfindungsgemäßen Ausführungsform der Abstreifeinrichtung versehen ist;

Fig.16a-c eine erfindungsgemäße Bodenreinigungsmaschine in Seitenansicht von links, im Aufriß und in Seitenansicht von rechts, wobei sich die Richtungsangaben auf den in Fig.16b dargestellten Aufriß beziehen;

Fig.16d-f einen anders ausgebildeten Stiel 10 in den Darstellungen gemäß Fig.16a-c;

Fig.17 den Stiel 10 gemäß der Darstellung in Fig.16a allein;

Fig.17a die Darstellung gemäß Fig.17 eines Stieles 10 gemäß den Fig.16d-f;

Fig.18 den Stiel 10 gemäß der Darstellung in Fig.16b allein;

Fig.18a die Darstellung gemäß Fig.18 eines Stieles 10 gemäß den Fig.16d-f;

Fig.19 den Teilschnitt entlang der in Fig.18 eingezeichneten Linie F-F;

Fig.19a die Darstellung gemäß Fig.19 eines Stieles 10 gemäß den Fig.16d-f;

Fig.20 den Teilschnitt entlang der in Fig.18 eingezeichneten Linie G-G;

Fig.20a die Darstellung gemäß Fig.20 eines Stieles 10 gemäß den Fig.16d-f;

Fig.21 den Teilschnitt entlang der in Fig.18 eingezeichneten Linie H-H;

Fig.22 und 23 jeweils dieselbe, mit einem erfindungsgemäßen Fahrwerk ausgestattete Bodenreinigungsmaschine im Seitenriß mit ausgefahrenem bzw. eingefahrenem Fahrwerk;

Fig.24 eine erfindungsgemäße Transportkarre für eine Bodenreinigungsmaschine im Schrägriß und

Fig.25 die Transportkarre nach Fig.24 mit an ihr festgelegter Bodenreinigungsmaschine im Seitenriß.

The invention is explained in more detail below with reference to the accompanying drawings. It shows:

Figure 1 shows a floor cleaning machine according to the invention schematically in side view.

2 shows the floor cleaning machine according to FIG. 1 viewed schematically from below;

3 shows a particularly preferred embodiment of a floor cleaning machine according to the invention in side elevation;

3a shows the machine in the representation according to Figure 3, the spring 67 being of a different type;

4 shows the section along the line AA drawn in Figure 3;

5 shows the section along the line BB shown in Figure 3;

5a shows the representation according to FIG. 5 with another possibility of fastening the motor 6 to the side parts 1, 2;

6 shows the section along line CC drawn in FIG. 3;

7 shows the motor 6 with the gearbox connected, partly in section, in elevation;

8 shows the side view of the motor 6 in the viewing direction designated X in FIG. 7;

9 shows the section along the line CD drawn in FIG. 8;

10 shows the side view of the motor 6 in the viewing direction designated by Y in FIG. 7;

FIG. 11 shows the floor cleaning machine according to FIG. 12 in side elevation;

12 shows the section along the line EE shown in FIG. 11;

Figure 13 shows the drum 5 with a first embodiment of a stripping device according to the invention in detail in elevation;

14 the end face of the strip holder 59 according to FIGS. 12 and 13;

15 shows the section along the line EE drawn in FIG. 11, the cut-through floor cleaning machine being provided with a second embodiment of the stripping device according to the invention;

16a-c show a floor cleaning machine according to the invention in a side view from the left, in elevation and in a side view from the right, the directions relating to the elevation shown in FIG. 16b;

16d-f a differently designed handle 10 in the representations according to FIGS. 16a-c;

17 shows the stem 10 as shown in FIG. 16a alone;

17a shows the representation according to FIG. 17 of a stem 10 according to FIGS. 16d-f;

FIG. 18 the stem 10 as shown in FIG. 16b alone;

18a shows the representation according to FIG. 18 of a stem 10 according to FIGS. 16d-f;

19 shows the partial section along the line FF drawn in FIG. 18;

19a shows the representation according to FIG. 19 of a stem 10 according to FIGS. 16d-f;

20 shows the partial section along the line GG shown in FIG. 18;

20a shows the representation according to FIG. 20 of a stem 10 according to FIGS. 16d-f;

21 shows the partial section along the line HH shown in FIG. 18;

22 and 23 each show the same floor cleaning machine equipped with an undercarriage according to the invention in side elevation with the undercarriage extended and retracted;

Fig.24 a trolley according to the invention for a floor cleaning machine in diagonal and

Fig. 25, the trolley according to Fig. 24 with the floor cleaning machine attached to it in side elevation.

1 and 2 schematically show a floor cleaning machine according to the invention shown. It essentially comprises two spaced parallel ones Side parts 1 and 2, at the distance from which two cylinder brushes 3, 4 are arranged. This Cylinder brushes 3, 4 comprise, as usual, a shaft 31, 41, on which bristles with their one ends are fixed and project radially from this shaft 31, 41.

The axes of symmetry 30, 40 of the cylinder brushes 3, 4 run essentially normally the levels of the side parts 1,2. The shafts 31, 41 are the end faces of the cylinder brushes 3.4 outstandingly trained and rotatably mounted in the side parts 1,2.

A drum 5 is arranged between the cylinder busts 3, 4, its axis of symmetry 5 ' likewise runs essentially normal to and in the planes of the side parts 1, 2 is rotatably mounted.

It is preferably provided that the two cylinder brushes 3, 4 run in opposite directions and the Drum 5 are driven in the sense of the rear cylinder brush 4 (see Direction of rotation arrows in Fig. 1). This drive is achieved by means of a motor 6 which is arranged inside the drum 5 - designed as a hollow cylinder - and its stator on the side parts 1,2 is anchored (see Fig. 2). Its output shaft 60 projects beyond the end face the drum 5 and extends into a gear arrangement 7 fixed on the side part 2. This connects the motor output shaft 60 with the drive pinion of the cylinder brushes 3, 4 and the drum 5.

The floor cleaning machine according to the invention is not a self-propelled device, it must rather be moved on by hand. To enable this moving on, is on a handle 10 is fixed to the upper ends of the side parts 1, 2 and ends at about waist height. At the Handle 10 is a fresh water tank 13 is arranged, from which water is directed downwards and in front of the cylinder brush 3 on the floor to be cleaned or on the brush 3 in shape a spray cone is applied.

Specifically, this water is applied to the floor to be cleaned or to the Cylinder brush 3 as follows: From the fresh water tank 13 is 90 through a valve (Ball valve or the like.) And a hose 91 water sucked in by a pump 92 and over a further hose connection 93 of a nozzle 94 or a similar distribution device fed. This sprays the water in a fan shape across the entire width of the brush front cylinder brush 3 on the floor or on the cylinder brush 3. The thereby of the Spray cone 113 designed as a nozzle 94 is shown in FIGS. 2a, b.

The two cylinder brushes 3, 4 fling the dirt on the floor together with the sprayed water towards drum 5, causing on the drum 5, a water film 52 is formed, which the dirt on the surface of the drum 5th holds. In the case of applying the fresh water directly onto the cylinder brush 3, lift the Brush 3.4 from the floor only the dirt located there. That on the brush 3 applied water is also thrown in the direction of drum 5, so that also here the water film 52 holding the dirt on the drum surface can form.

At about the 1 ^h position of the drum 5, a stripping device 14 is provided which bears against the drum 5 and lifts the contaminated water film 52 from the drum surface and directs it into a dirty water tank 15. After passing through the stripping device 14, a new water film 52, with dirt removed from the floor, is applied to the drum 5 in the manner discussed.

The thickness of the water film 52 is dependent on the amount of water used by the user dependent. The amount of water can be kept low to match the corresponding Make the water film thin. In any case, the amount of water is at least as high choose that the water film 52 can hold the dirt on the drum outer jacket.

As can be seen from FIGS. 2b and 2c, d, the invention provides for the nozzle 94 about an axis 115 running approximately normal to its spray cone axis of symmetry 114 pivotable on the floor cleaning machine. She can do two Take pivot positions, of which the first with "grid position A" and the the second is designated "grid position B".

The user swivels from one position to the other directly on the nozzle 94 to make. However, it is also within the scope of the present invention, a mechanical (e.g. cable pull) or electrical actuating device (e.g. magnetic coil with movable anchor) with which the nozzle 94 can be operated remotely (e.g. by means of an actuating element, which is attached to a stem 10 which will be explained in detail below is fixed).

As shown somewhat more clearly in FIGS. 2c, d, the nozzle 94 has at least one Latch III on which in the area of the nozzle 94 on the floor cleaning machine provided recesses 112 cooperates. This ensures that the nozzle 94 remains in the selected position.

In the grid position A (= Fig.2c), the nozzle 94 is aligned so that its spray cone 113 Cylinder brush 3 does not touch, but hits the floor to be cleaned entirely. In contrast, the nozzle 94 is aligned in grid position B (= Fig.2d) so that you Spray cone 113 hits the front cylinder brush 3 completely.

By simply pivoting the nozzle 94, the user of the Floor cleaning machine the water application mode suitable for the floor select (grid position A for hard, non-absorbent floors; grid position B for absorbent floors Floors), whereby a floor cleaning machine according to the invention regardless of Floor type always delivers consistently good cleaning results.

To achieve proper functioning, it is sufficient if the side parts 1, 2 as flat plates are formed. So that the shaft ends and the gear arrangement 7 are not exposed, the side parts 1, 2 are shown in the drawings Embodiment designed as a hollow body, i.e. they include, as in the below more detailed discussion of the structure of the floor cleaning machine according to the invention corresponding covers 11, 12 will still be explained.

A chassis is also attached to the side parts 1, 2. It comprises four wheels 8, which are mounted in movable wheel suspensions 9 relative to the cylinder brushes 3, 4. The Wheel suspensions 9 are designed as levers, the wheels 8 are at the first ends thereof Lever mounted while the second ends of the wheel suspensions 9 are pivotable to the Side parts 1,2 are set.

The lever-shaped measures can be implemented by means of measures which are discussed in more detail below Wheel suspensions 9 are pivoted in the direction of the arrow and back, so that the Cleaning machine the floor optionally with these wheels 8 (in the lowered state) or touched with the cylinder brushes 3.4 (in the raised state of the wheels 8). In the latter Condition is a cleaning of the floor possible, in the former condition the machine can be in easily moved without cleaning activity.

After this overview summary of the basic structure of a Floor cleaning machine according to the invention is the specific below Construction will be explained in detail.

First of all, the drive system according to the invention, its most important Parts in Figure 3, a view of the side part 2 with the cover 12 removed are recognizable. The motor 6 is not visible because it lies behind the side part 2 which a gear 16 is flanged. This gear 16 has two separate ones Output shafts 17, 18, one output shaft 17, 18 for each Cylinder brush 3, 4 is provided.

The transmissions for transmitting the torque from the transmission 16 to the Cylinder brushes 3, 4 are formed by toothed belt drives. These include the Output shafts 17, 18 fixed pulleys 19, 20 and on the shafts 31 41 of Cylinder brushes 3.4 fixed toothed pulleys 21, 22 and toothed belts 23, 24th toothed belt 23 connects the output shaft lock washer 19 with the cylinder brush lock washer 21; Timing belt 24 connects output shaft pulley 20 to the rear Cylinder brush lock washer 22. The material of the lock washers 19, 20, 21, 22 is in principle any, but preferably steel, aluminum, plastic or the like. used.

Another toothed disk runs on the output shaft 18 parallel to the toothed disk 20 25 fixed, which via a further toothed belt 26 with a on the drive shaft 27th the drum 5 fixed pulley 28 is connected.

4 shows the structure and mounting of the cylinder brush 3 in the side parts 1, 2 in detail recognizable. The second cylinder brush 4 is constructed and stored in the same way, so that one separate drawing and discussion of this second cylinder brush 4 is omitted becomes. The cylinder brush 3 has a shaft 31 on which a brush core 29 is applied. This carries bristles that extend radially outwards. For the sake of clarity only the outlines of the brushes 3, 4, but not in all of the drawing figures the individual bristles are shown. The shaft 31 projects beyond the brush core 29 on both sides and designed to penetrate the side parts 1, 2. On her the one on the right in Fig. 4 Side portion 1 projecting section, the shaft 31 has a socket 32, which by means an annular ball bearing 33 is rotatably mounted in the side part 1. At the left end of shaft 31 the toothed disc 21 is fixed, which in turn via ring ball bearings 33 in the side part 2 is stored.

The ring ball bearings 33 mentioned are preferably used because they have particularly low frictional resistances; However, it is entirely possible within the scope of the invention to replace it with other suitable bearing means, such as roller bearings, slide bearings or the like. 5 shows the mounting of the drum 5 and the arrangement and attachment of the motor 6. The two side parts 1, 2 and the cover 12 can again be seen in this illustration. The side parts 1, 2 are connected to one another by means of rods 34, the ends of which are each fixed to the side parts 1, 2 by a cylinder screw 36. Rollers 35 are arranged on these rods 34, the running surfaces of which bear against the inner surface of the drum 5 and thus support it so that it can rotate. As is apparent from Figure 3, in addition to the just explained rods 34 and rollers 35 ^h at 12 - 6 ^h and also position ^h on the 9 - and 3 ^h position similar rods 34 and rollers 35 are provided, so that the drum 5 Total is guided at four angular positions, each offset by 90 °.

Sealing sleeves 37 are fastened to both end faces of the drum 5, which are sealing rest on the side parts 1,2 and thus the penetration of water inside the Prevent drum 5.

The motor 6, together with its two mounting flanges 61, 62, was the better For the sake of clarity, shown with thicker outline lines. The rods 34 pass through holes 63 of these mounting flanges 61, 62, so that there is a rotation-proof connection of the MotorStator with the side parts 1.2 results. Adjacent to the side part 2 is the housing 38 of the Gear 16 arranged, further are the first gear output shaft 17 and on it fixed toothed disc 19 and the motor output shaft 60 to recognize. At the in Fig.5 A fan wheel 46 is arranged on the right-hand side of the motor (see also FIG. 7). In order to this fresh air can suck in, the mounting flange 62 has a corresponding Recess 47, likewise there is a corresponding recess 42 in side part 1 provided for cooling air supply.

In the upper ends of the side parts 1, 2 bores 39 are inserted, which for Attach a stem 10 serve.

As can be seen from FIG. 5 a, the motor 6 can be secured to the non-rotatable Side parts 1,2 instead of the rods 34 and the cap screws 36 also tension screws 36 ', which are somewhat longer than the cheese head screws 36 and are provided in their positions, be used. For this purpose, the mounting flanges 61, 62 Internal thread cut into which the lag screws 36 'engage. The rollers 35 for Storage of the drum 5 are themselves rotatably mounted on the lag screws 36 '.

For a more detailed discussion of the drum drive, reference is made to FIG. 6. The drum drive shaft 27 is arranged approximately at the 1 ^h position of the drum 5 (cf. also FIG. 3). This extends over the entire drum width and the side parts 1, 2 projecting and is rotatably supported in the latter by means of ball bearings 43. The toothed pulley 28 is fixed at its end shown on the left in FIG. 6 and is in drive connection via the toothed belt 26 with the toothed pulley 25 fixed on the second transmission output shaft 18. A drive pinion 44, which engages in an internal toothing 45 embedded in the inner jacket of the drum 5, is fastened to the drive shaft 27, just inside both drum end faces. Since the drum circumference is significantly larger than the circumference of the drive pinions 44, a low rotational speed of the drum 5 is achieved compared to the rotational speeds of the cylinder brushes 3, 4.

The structure of the motor 60 and the gear 16 connected downstream of it should be based on the Fig. 7 to 10 are discussed. In Figure 7, the motor 6 with its mounting flanges 61, 62 and the gear 16 (only the gear housing 38 can be seen) alone, i.e. im not in yet the cleaning machine installed state shown partially in section. Right in Fig. 7 as well as in FIG. 10 is the already mentioned fan wheel fixed on the motor output shaft 60 46 and the recess 47 to see the fresh air supply. The rotor assembly 65 is with the Glued shaft 60, the shaft 60 is supported on both ends by means of ball bearings 64 in the stator.

An electric motor 60 of any type, e.g. a direct current, or Asynchronous motor used, but the use of a has proven to be particularly cheap Synchronous motor proven. According to the invention, one is independent of the selected engine type Electronic speed control device provided for the motor 6. By means of this In addition to selecting a speed control device for the soil just treated optimal brush and drum speed, especially when the machine is switched on the drive can be started smoothly. With the preferred synchronous motor there is also the advantage that high speeds can be achieved, whereby the cleaning machine according to the invention is also suitable for growing floors. especially of marble floors.

Furthermore, the type of fixing the toothed disks 19, 20, 25 to the Output shafts 17, 18 can be seen: Some of them are embedded in the output shafts 17, 18 Springs 48 are provided, the corresponding ones provided in the toothed disks 19 Engage recesses, with which a rotation of the toothed disks 19, 20, 25 relative to Output shafts 17, 18 is prevented. So that the toothed disks 19, 20, 25 are not in Can shift longitudinal direction of the output shafts 17, 18 are on the one hand on the Shell surfaces of the output shafts 17, 18 circlips 49 and on the other hand on the end faces the output shafts 17, 18 discs 50 by means of protruding into the output shafts 17, 18 Screws 51 set.

The second output shaft 18 is longer than the first output shaft 17 because it serves simultaneously to drive the cylinder brush 4 and to drive the drum 5, for which purpose two toothed disks 20 and 25 are mounted side by side on it.

The structure of the transmission 16 can be represented by means of FIGS. 9 and 8: This comprises a on the motor output shaft 60 pinion 53 and two, in this pinion 53rd engaging primary gears 54. The upper primary gear 54 is directly on the second Output shaft 18 set while the second primary gear 54 is on an outside guided shaft 55 is set.

The second output shaft 18 and the shaft 55 are the same as the first one, not in FIG. 9 recognizable output shaft 17 by means of two ball bearings 56 in the housing 38 of the transmission 16 stored.

There is also a secondary gear 57, which is in the lower primary gear 54 intervenes. This secondary gear 57 is not closed due to the cut in Figure 9 seen, but it is fixed to the first output shaft 17. The exact spatial The arrangement of the three gearwheels 54, 57 is shown in particular in FIG. They are in this figure is not visible because covered by the housing 38, for better understanding of the transmission structure, however, were the crests of the housing 38, which the gears 54, 57 cover, provided with the reference numerals of these gears.

Due to this gear configuration, the second output shaft 18 is directly from the pinion 53 driven, while the first abrasion shaft 17 only indirectly via the second primary gear 54 is in drive connection with the pinion 53. By interposing this Primary gear 54 between motor pinion 53 and output shaft gear 57 result opposite directions of rotation, symbolized by the arrows in FIG Output shafts 17, 18.

The material of pinion 53, primary 54 and secondary gears 55 is basically free selectable, but steel spur gears are preferred because they are particularly high Have lifespan. Furthermore, it has proven to be cheap, pinion 53, primary 54 and Execute secondary gears 55 helically toothed.

Next, the stripping device 14 according to the invention will be discussed. Like from the 11 and 12 shows, the stripping device 14 has an over the entire Drum width extending on the outer shell of the drum 5 ledge 58. This Bar 58 is preferably formed by a steel bar and thus only slightly elastic, but it could also be used as an elastic rubber strip (such as a wiper blade) be trained.

Next to it is a rigid one that extends essentially over the entire length of the last Strip holder 59 provided. The strip 58 lifts the dirty water film 52 from the Drum surface, leads it to the last holder 59, from which he in the Dirty water tank 15 arrives.

In principle, the strip holder 59 also has to be merely strip-shaped, but must be suitable to hold the bar 58 continuously over its length.

As can be seen in particular from FIGS. 13 and 14, a preferably used one Last holder 59 has an approximately triangular profile, which is provided with a slot 66, in which the bar 58 can be clamped. At this slot 66 one closes in installed condition horizontally to slightly inclined towards the waste water tank 15 running surface 68 for draining the dirty water film. With this one Area 68 adjoining draining board 69, the bar holder 58 projects beyond the side wall of the dirty water tank 15 and can thus the dirty water in the Insert dirty water tank 15.

So that the water film 52 can be lifted off the drum surface, the Bar 58 are pressed against this surface. According to the invention, this is done by means of at least one spring 67, which the strip holder 59 towards the drum surface presses. This spring 67 could be on one end directly on the strip holder 59 and at the other end arranged on an auxiliary strip running parallel to the strip holder 59 and thus the strip holder 59 translationally towards the drum surface move.

In the preferred embodiment of the invention shown in the drawings but provided the bar holder 59 pivotable, and the spring 67 so to arrange that the part 58 of the strip holder 59 carrying the strip in the direction Drum surface swiveled.

In the simplest case, this pivotable mounting could be achieved in that A stub shaft is arranged on each of its end faces, which Stub shaft are pivotally mounted in the side parts 1,2. The spring 67 could be arranged again so that they have their first end on the strip holder 59 and with its second end on an auxiliary strip running parallel to the strip holder 59 supports.

However, the strip holder 59 is preferably secured against rotation on a pivot shaft 70 fixed. This is done in such a way that the pivot axis 70 the profile of a Has regular hexagons and the last holder 59 with this profile corresponding bore 71 is equipped. The pivot axis 70 is the end faces of the Last holder 59 formed outstanding and pivotally mounted in the side parts 1,2. All known variants of swivel bearings can be used for this, since the Pivot axis 70 performs only very slight movements, it is sufficient, however Side parts 1,2 to be provided with holes and the pivot axis 70 in these holes without introducing separate bearings.

On at least one end of the pivot shaft 70 that projects beyond a side part 1, 2 Lever 72 determines which lever 72 the at least one spring 67 acts on. This The situation is best seen in Fig. 3. The spring-lever arrangement discussed is in double execution, i.e. also provided on the side part 1, not shown in FIG. 3.

The spring 67 is formed by a compression spring, the first end of which is on the side part 1,2 and the other end of which is supported on the lever 72. The compression spring 67 is in one hollow cylindrical housing 73 closed on one side, which housing 73 parallel to the plane of the side part 1, 2 is pivotally mounted on the latter. The compression spring 67 is supported with its first end on the bottom 74 of this housing 73 and with its second End on a pivotally mounted on the lever 72, projecting into the housing 73 Piston 75 off.

The pivotable mounting of the housing 73 on the side part 1, 2 or the piston 75 on Lever 72 takes place in each case by an axis 76 on the side part 1, 2 or on the lever 72 is attached and that the housing 73 or piston 75 each encompasses these axes 76 Have hole. Instead of a hole, the housing 73 and the piston 75 could be exposed a fork abutting the axles 76 may be provided. Such forks should be in Open direction away from the spring 67.

As can be seen in FIG. 3a, the spring 67 can also be designed as a tension spring. The first The end of this tension spring is fixed to the side part 1, 2 by means of a bolt 67 ' second end is attached to lever 72.

15 shows another embodiment of the stripping device 14 according to the invention. Here was the principle of lifting the water film 52 through a squeegee departed and instead a substantially the entire drum width extending, rotating and with their free bristle ends on the drum surface adjacent cylinder brush 77 is provided. This cylinder brush 77 is analogous to the Kehr cylinder brushes 3.4 in the side parts 1.2, preferably rotatable by means of ball bearings stored.

The rotary drive of this cylinder brush 77 becomes similar to the drum drive thereby achieved that on the first transmission output shaft 17 a further toothed disc is attached, which by means of a toothed belt with a on the shaft 78 of the cylinder brush 77 fixed lock washer in drive connection.

The cylinder brush 77 lifts the dirty water film from the rotary motion Drum surface and simultaneously throws it towards the dirt container 15 (cf. Arrow in Fig. 15). For a complete introduction of the resulting water-dirt mist To ensure in the dirt container 15, this is slightly different than in the embodiment of the stripping device 14 shown in FIGS educated. In particular, it has a reference to the actual container and the Cylinder brush 77 on collecting plate 150.

Although the stripping devices 14 according to the invention only in connection with a cleaning machine which has two counter-rotating cylinder brushes 3, 4, described, these can also be used with all other floor cleaning machines at least one rotating brush and with a rotating drum 5 Water film 52 is arranged to receive the dirt swept up by the brush, can be used to remove the dirty water film 52 from the drum 5 lift off and lead into a dirty water tank 15.

In order to enable the floor cleaning machine according to the invention to be moved further, a handle 10 is fixed at the upper ends of the side parts 1, 2. One with one Handle 10 provided floor cleaning machine is shown in Fig.16 α-c at a glance.

For a more detailed discussion of the structure of this stem 10, reference is made to FIGS. 17 and 18 taken. The handle 10 has a central section 79, at its upper end Handle 80 in the form of a loop-like bracket and a fork at the lower end 81 is set. The legs 82 of this fork 81 are with their free ends on the Side parts 1,2 of the floor cleaning machine pivotally mounted. This storage takes place by means of cheese head screws which drill the holes 83 provided in the fork ends and penetrate the holes 39 provided in the side parts 1, 2.

On the handle 80, a pump switch 109 is also fixed, which serves the Pump 92 (see FIG. 1) for applying the fresh water to the floor to be cleaned or on the first cylinder brush 3, on and off.

The central section 79 is designed as a hollow profile, as can be seen in particular from FIG. 21. This allows parts of the electrical devices for operating the motor 6, such as Speed control device, capacitor 84 etc. within the handle 10 and thus invisible and to arrange them protected against environmental influences. But this stem shape is not Essential to the invention, in principle is a central section 79 designed as a simple rod completely adequate.

At least one switch 86 must be provided for switching the motor 6 on and off. In the in In the preferred embodiment shown in the drawings, motor 6 is a single phase AC motor and a switch 86 is installed in each of its two feed lines. These two switches 86 are stationary at the upper end of the middle section 79 of the handle 10 appropriate.

The handle 10 has as a further part a pivotable at the upper end of the Middle section 79 mounted lever 85. According to the invention, the switch is provided 86 to operate by means of this lever 85. In the simplest case, lever 85 could do this be rod-shaped and be pivotally attached to the handle 10 with a first end. The actuating elements 87 of the switches 86 would have to be within the pivoting range the lever 85 may be arranged so that they can come into contact with the lever 85.

In the embodiment shown in the drawings, however, is provided Lever 85 and loop-shaped (approximately corresponding to the shape of the handle 80) to provide it with a pivot shaft 88 mounted on the stem 10. This Pivoting shaft 88, the profile of the central section 79 is designed to be protruding and in Bores, which are embedded in the side walls 79 ', stored. On the Swivel shaft 88, an actuator 89 is fixed per switch 86, the Actuating element 87 of the switch 86 in the pivoting path of the actuating element 89 is attached lying on the stem 10.

These actuators 89 could be formed by cams, for example, they are however, preferably as a cylindrical one fixed eccentrically on the pivot shaft 88 Discs formed, see Fig. 20. The switches 86 are formed by microswitches, the Actuator 87 is a lever.

In Fig. 18 the lever 85 is shown in the "ON" position, i.e. the switches are 86 closed and the motor 6 is thus in operation. To switch off, the lever 85 is as in Fig.17 shown pivoted downwards; in the illustration according to Fig. 18 this movement would result in the lever being pivoted out of the plane of the drawing 85 mean. As indicated by an arrow in Fig. 20, the lever actuation becomes the Swivel axis 88 swiveled clockwise, with which the actuating disks 89 so be pivoted that the switch actuators 87 clockwise and thus in Can pivot towards the "OFF" position.

A somewhat different embodiment of the handle 10 is shown in FIGS. 16d-f. Here In addition to the central part 79, the handle 10 comprises a housing 110 which extends over the central part 79 pushed and firmly connected to the upper portion of the middle part 79 and therefore in the present description and also with regard to the attached claims is to be regarded as part of the stem 10.

This housing 110 is used for all electrical / electronic components and groups, which serve to operate the motor 6, e.g. Motor protection switch 116, capacitor 84, switch 86, the electronic speed control device u. Like., splash-proof to record. Furthermore, the mains connection 117 is in the wall of this housing 110 fixed. In addition, the pivot shaft 88 of the lever 85 in this housing 110 stored, the switches 86 and their actuators 89 in the same manner as in 18-21 are arranged within the housing 110 (see FIGS. 17a-20a). The motor 6 is thus switched on and off in exactly the same way as just described.

Another difference between the stem 10 according to FIGS. 16a-c and that according to 16d-f lies in the arrangement of the pump switch 109: According to the latter In the illustrations, this is arranged within the housing 110 and its actuating lever 109 'at the top of the housing 110, whereas according to the first mentioned drawing figures is attached to the handle 80.

Although the handle 10 according to the invention only in connection with one in the Drawings shown cleaning machine, the two rotating in opposite directions Has cylinder brushes 3.4, has been described, this handle 10 can also be used with all others Floor cleaning machines, which have a motor 6, preferably an electric motor Driving cleaning devices, such as cylinder brushes 3, 4 and at least one Have switches 86 for switching the motor 6 on and off, used to by means a part of the stem 10, namely the lever 85, said switch 86 to operate.

As already explained, is shown on the side parts 1, 2 in the drawings Floor cleaning machine attached to a landing gear. It comprises four wheels 8, which in relative to the cylinder brushes 3.4 movable wheel suspensions 9 are mounted. The Wheel suspensions 9 are designed as levers, the wheels 8 are at the first ends thereof Lever mounted, while the second end of the suspensions 9 pivotable to the Side parts 1,2 of the floor cleaning machine are set.

As can be seen in particular from FIGS. 22 and 23, the wheel suspensions 9 can be divided into two Positions are pivoted: In the first position shown in Fig. 23 the Wheel suspensions 9 are the wheels 8 above which come into contact with the ground Section of the cylinder brushes 3.4 raised so that the cylinder brushes 3.4 the floor touch. It is possible to clean the floor. In the shown in Fig. 22 The position of the wheels 8 is below the section of the section which comes into contact with the ground Cylinder brushes 3.4 lowered, the floor cleaning machine thus rests on these wheels 8, while the cylinder brushes 3, 4 are lifted off the floor.

In this position of the wheel suspensions 9, the floor cannot be cleaned, rather, the floor cleaning machine can now be carried out particularly easily without cleaning activity be moved.

To carry out the discussed pivoting cables 95 are provided with their first ends fixed to the wheel suspensions 9 at a distance from their second ends are. By pulling the cables 95 in the direction of the arrow drawn in FIG the wheel suspension 9 are brought into the position according to FIG. 23.

To lower the chassis, i.e. for pivoting the wheel suspensions 9 from the The position according to FIG. 23 in the position according to FIG. 22 are compression spring devices 97 intended. In the embodiment of the drawings, these are as a variety Disc springs stacked on top of one another, but alternatively they could also conventional compression springs. The first ends of these compression spring devices 97 are spaced from the second ends of the wheel suspensions 9 thereon fixed. The second ends of the compression spring devices 97 are on the Floor cleaning machine, specifically on the side parts 1,2, fixed.

The compression spring devices 97 thus exert a permanent force on the Wheel suspensions 9 from what force they are towards the extended position tried to pivot. To prevent this pivoting, the cables 95 absorb this force, i.e. their second ends must be after reaching the landing gear position be fixed according to Fig. 23. Should pivoting of the wheel suspensions 9 in the position shown in FIG. 22 only needs to be fixed manually Cables 95 to be lifted. The generated by the compression spring devices 97 Forces can now act freely on the wheel suspensions 9 and pivot them.

Basically, a cable 95 and a compression spring device must be used for each wheel suspension 9 97 are provided. To the number of cables 95 and the compression spring devices 97, two wheel suspensions 9 can be used according to the invention with their longitudinal extensions aligned with each other and with the second touching Ends are aligned (see also Fig. 2). These second ends are in one another engaging teeth 96 formed. Because of this construction method are now each two wheel suspensions 9 coupled together, i.e. on a wheel suspension 9 transferred pivoting movement is transferred to the other, both wheel suspensions 9 always pivot synchronously.

Because of this coupling only need one for each two wheel suspensions 9 Cable 95 and a compression spring device 97 are provided. Which of the two coupled wheel suspensions 9, the cable 95 or the compression spring device 97 is set, is indifferent to the proper pivoting function. In the The embodiments shown in the drawings are the first end of the cable 95 at the rear, the first end of the compression spring device 97, however, at the front Suspension set 9.

To carry out the pivoting of the wheel suspensions 9 must on the second ends the cables 95 are acted on. In the simplest case, these second ends can be free be led out of the floor cleaning machine, the action takes place through grips the cable ends immediately.

According to the preferred embodiment of a shown in the drawings Floor cleaning machine according to the invention provides that the second ends of the Cables 95 are fixed to part of the handle 10 so that the lifting of the Wheel suspensions 9 can be carried out by means of a part of the handle 10. Said stem part is formed by a pivotally mounted lever on the handle 10, in so far as this handle 10 also has a lever 85 for actuating the motor switch 86 - by this Motor switch lever 85 can be formed. The one shown in the drawings This embodiment is the use of the motor switch lever 85 already discussed realized, so apply to the design of the cable control lever the above statements.

As can best be seen in FIGS. 18 and 19, the second ends of the cable pulls 95 are on the lateral surface of the pivot shaft 88 of the lever 85 is fixed. In theory it is possible, the second ends of all cables 95 to the outer surface of the Guide pivot shaft 88. Exactly the same function is achieved if the second ends of the cables 95 with each other outside the floor cleaning machine are connected and via a further cable 95 'to the pivot shaft 88 be connected (see also Fig. 16b).

When the lever 85 is pivoted from the position shown in FIG. 22 into the position shown in FIG Fig.23, the pivot shaft 88 is pivoted counterclockwise, the Cable 95 'wound on the pivot shaft 88 and thus the cables 95 in the direction of the arrow in Fig. 22. The wheel suspensions 9 are raised.

When the lever 85 is pivoted in reverse, the cable 95 'of the Swivel shaft 88 and the cables 95 released, which the Wheel suspensions 9 are pressed down by the compression spring devices 97 can.

The discussed fixing of the cables 95 after reaching the chassis position according to FIG. 23 takes place by manually holding the lever 85 in the position shown in FIG. 23. Due to the need to hold the lever 85 by hand and the simultaneous Using the lever 85 to actuate the motor switch 86, the lever 85 unfolds the Effect of a dead man's device: With any - even unintentional - release of this Lever 85, the compression spring devices 97, the wheel suspensions 9 down pivot so that the cables 95, 95 'pull down and subsequently the lever Swivel 85 into the position according to Fig. 22. On the one hand there is the hanging up of the Floor cleaning machine on the rollers 8 and on the other hand switching off the motor 6. so that the floor cleaning machine is completely shut down.

On both sides of the fixing points of the cables 95 or on both sides of the fixing point the cable 95 'on the pivot shaft 88 discs 98 may be attached so that the Cables 95, 95 'are held as in a pulley.

Finally, the structure of an inventive device is shown in FIGS Carriage discussed, which is suitable for a floor cleaning machine in the is constructed so far.

The trolley has a frame 99, which is formed from only four parts: The central component is the wheel axle holder 100, on which the wheels 101 are rotatably mounted are. Furthermore, a handle 102, support struts 103 are on the wheel axle holder 100 and receiving rods 104 set. The wheel axle bracket 100 is in three parts built up, it comprises a tubular middle piece 100 'and in the end faces of this Center piece 100 'usable wheel axle parts 100 ". On these wheel axle parts 100" are Support struts 103 and the receiving rods 104 set while the handle on Center piece 100 'is attached.

The advantage of this three-part construction is that the trolley is very easy for a variety of cleaning machines of different widths can be made suitable can: The basic structure and sizes of all components remain the same, only that The length of the middle piece 100 'is to be varied.

As can best be seen from FIG. 25, the support struts 103 serve to Support the trolley so that its handle 102 is approximately perpendicular to the ground.

They are used to set a floor cleaning machine on the trolley Support rods 104. They are engaged in the floor cleaning machine, specifically in the side parts 1, 2, recesses 105, brought (see Fig. 25). The trolley is then tilted counter-clockwise, causing the Floor cleaning machine is lifted off the floor. At the same time, the Support struts 103 lifted off the floor, so that the trolley and cleaning machine only rest on the wheels 101 of the trolley. So that is an unhindered Transport cart and cleaning machine can be moved.

The cleaning machine is set down in a similarly simple manner: the transport cart is tilted clockwise until the cleaning machine is in contact with the floor (= Position according to Fig. 25). Finally, the cart is turned to the left (as shown in 25) and thus the receiving rods 104 out of the recesses 105 pulled out.

For a particularly secure fixing of the floor cleaning machine on the trolley is to ensure a connecting device 108, for example by a rope, a rigid bracket or the like. Formed is provided. This is one end of frame 99 Transport cart and can be fixed on the floor cleaning machine at the other end.

The level at which this connecting device 108 is fixed is fundamental any. As shown in the drawing, this connecting device 108 can Provided area of the upper end of the handle 102 or in the middle portion thereof be. The connecting device 108 can also be approximately normal to the handle 102 and Handle 10 of the floor cleaning machine run, but alternatively as with dashed lines entered, a flat angle to handle 102 and handle 10 lock in. To ensure that this connection device 108 is not lost, it is preferably firmly connected to the trolley.

On the handle 102 of the trolley are holders 106 for spare parts Floor cleaning machine, especially for replacement cylinder brushes. In addition, 99 panels can be attached to the frame, with which the Appearance of the trolley can be adapted to that of the floor cleaning machine can.

Claims (28)

Drive system for two counter-rotating cylinder brushes (3, 4) of a floor cleaning machine comprising a motor (6), a transmission (16) and transmissions for transmitting the torque from the transmission (16) to the cylinder brushes (3, 4), characterized in that Gear (16) for each cylinder brush (3, 4) has a separate output shaft (17, 18). Drive system according to claim 1, characterized in that the transmissions on the output shafts (17, 18) and on the shafts (31, 41) of the cylinder brushes (3, 4) fixed toothed discs (19, 20, 21, 22) and toothed belts (23 , 24), each of which connects an output shaft toothed disc (18, 19) to a cylinder brush toothed disc (21, 22). Drive system according to Claim 1 or 2, characterized in that a further toothed pulley (25) is fixed to an output shaft (17, 18), which is fixed via a further toothed belt (26) to a drum (5) on the drive shaft (27) Toothed washer (28) is connected. Drive system according to Claim 1, 2 or 3, characterized in that the gear (16) has a pinion (53) fixed on the motor output shaft (60) and two primary gearwheels (54) engaging in this pinion (53) and one in one of the primary gearwheels (54) engaging secondary gearwheel (57), the second output shaft (18) being connected to one of the primary gearwheels (54) and the first output shaft (17) being connected to the secondary gearwheel (57). Drive system according to one of claims 1 to 4, characterized in that pinions (53), primary (54) and secondary gears (57) are formed by steel spur gears. Drive system according to one of claims 1 to 5, characterized in that pinions (53), primary (54) and secondary gears (57) are helically toothed. Drive system according to one of claims 1 to 6, characterized in that the toothed disks (19. 20, 21, 22) of the transmissions consist of steel, aluminum, plastic or the like. Drive system according to one of claims 1 to 7, characterized in that the motor (6) is formed by a synchronous motor. Drive system according to one of claims 1 to 8, characterized by an electronic speed control device for the motor (6). Scraper device (14) for a floor cleaning machine with at least one rotating brush, preferably a cylindrical brush (3, 4) and with a rotating drum (5) on which a water film (52) is arranged, which is mixed with the dirt swept up by the brush, Which stripping device (14) lifts this dirty water film (52) from the drum (5) and directs it into a dirty water tank (15) and which stripping device (14) extends over the entire drum width and lies on the outer casing of the drum (5). 58), characterized by a rigid strip holder (59) which extends essentially over the entire length of the strip and which is pressed towards the drum surface by means of at least one spring (67). Stripping device (14) according to claim 10, characterized in that the strip holder (59) is pivotally mounted and the spring (67) pivots its part carrying the strip (58) in the direction of the drum surface. Scraper device (14) according to claim 11, characterized in that the strip holder (59) is fixed against rotation on a pivoting shaft (70) which is designed to project over the end faces of the strip holder (59) and is mounted in side parts (1, 2) of the floor cleaning machine and that a lever (72) is fixed to at least one end of the pivot shaft (70) projecting from a side part (1, 2), on which lever (72) the at least one spring (67) acts. Scraper device (14) according to claim 12, characterized in that the spring (67) is formed by a compression spring, the first end of which is supported on the side part (1, 2) and the other end of which is supported on the lever (72). Scraper device (14) according to Claim 13, characterized in that the compression spring (67) is accommodated in a hollow cylindrical housing (73) which is closed on one side, which housing (73) is pivotably mounted on the side part (1, 2) parallel to the plane of the latter The compression spring (67) is supported with its first end on the bottom (74) of this housing (73) and with its second end on a piston (75) which is pivotably mounted on the lever (72) and projects into the housing (73). Scraper device (14) according to claim 12, characterized in that the spring (67) is formed by a tension spring, the first end of which is fixed to the side part (1, 2) and the second end of which is fixed to the lever (72). Scraper device (14) for a floor cleaning machine with at least one rotating brush, preferably a cylindrical brush (3, 4), and with a rotating drum (5) on which a water film (52) for receiving the dirt swept up by the brush is arranged and with Contaminated water film (52) lifts off the drum (5) and leads into a dirty water tank (15), characterized by a rotating cylindrical brush (77) which extends over the entire width of the drum, with its free bristle ends resting against the drum surface. Handle (10) for a floor cleaning machine, which has a motor (6), preferably an electric motor, for driving cleaning devices, such as cylinder brushes (3, 4), and at least one switch (86) for switching the motor (6) on and off, which switch (86) can be actuated by means of a part of the stem (10), characterized in that the switch (86) is fixed in place on the stem (10) and that the stem part for actuating the switch (86) can be pivoted by a Handle (10) bearing lever (85) is formed. Handle (10) according to claim 17, characterized in that the lever (85) has a pivot shaft (88) mounted on the handle (10), that an actuating member (89) is fixed on the pivot shaft (88) per switch (86) and that the actuating element (87) of the switch (86) is mounted lying on the handle (10) in the pivoting path of the actuating member (89). Handle (10) according to claim 18, characterized in that the actuating member (89) is formed by a cylindrical disc fixed eccentrically on the pivot shaft (88). Handle (10) according to claim 17, 18 or 19, characterized in that the at least one switch (86) is formed by a microswitch, the actuating element (87) of which is a lever. Handle (10) for a floor cleaning machine which has cleaning devices coming into contact with the floor, in particular cylinder brushes (3, 4), and a chassis, the wheels (8) of which are mounted in wheel suspensions (9) which are movable relative to the cleaning devices, so that the wheels (8) can be raised above the section of the cleaning devices coming into contact with the floor or can be lowered below the section of the cleaning devices coming into contact with the floor, which lifting can be carried out by means of a part of the handle (10), characterized in that the handle Part for carrying out the lifting is formed by a lever (85) which is pivotably mounted on the handle (10), and that cable pulls (95) are provided, the first ends of which are attached to the wheel suspensions (9) of the chassis and the second ends of which are attached to the lever (85 ) are set. Handle (10) according to claim 21, characterized in that the lever (85) comprises a pivot shaft (88) mounted on the handle (10) and in that the second ends of the cable pulls (95) are fixed on the lateral surface of the pivot shaft (88). Handle (10) according to claim 22, characterized in that disks (98) are attached to the pivoting shaft (88) on both sides of the fixing points of the cable pulls (95.95 '). Floor cleaning machine with at least one rotating brush, preferably a cylindrical brush (3, 4) and with a rotating drum (5) on which a water film (52) is arranged, which is mixed with the dirt swept up by the brush, and with a nozzle (94 ), by means of which the water forming the water film (52) can be applied to the floor to be cleaned or to at least one rotating brush, characterized in that the nozzle (94) about an axis running approximately normal to its spray cone axis of symmetry (114) (115) is pivotally attached to the floor cleaning machine. Floor cleaning machine according to claim 24, characterized in that the nozzle (94) has at least one locking lug (111) which interacts with locking recesses (112) provided in the area of the nozzle (94) on the floor cleaning machine. Transport cart for a floor cleaning machine according to one of the preceding claims with wheels (101) and a handle (102), characterized by a frame (99) with a wheel axle holder (100) on which the handle (102), support struts (103) and Receiving rods (104) which can be brought into engagement with recesses (105) provided in the floor cleaning machine are fixed. Transport cart according to Claim 26, characterized in that brackets (106) for spare parts of the floor cleaning machine, in particular for replacement cylinder brushes, are arranged on the handle (102). A trolley according to claim 26 or 27, characterized by at least one connecting device (108), such as a rope, rigid bracket or the like, which can be fixed at one end to the frame (99) and at the other end to a floor cleaning machine accommodated on the trolley.

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