EP2470055B1 - Handheld floor treatment device - Google Patents

Description

Technical field

The invention relates to a hand-held tillage implement according to the preamble of patent claim 1.

State of the art

From the EP 0 978 249 a device for treating surfaces is known, in particular for cleaning and polishing, which provides a joint which can be moved in at least two directions between a holding device and the base part. This joint enables the user to adjust the handle height to the personal size of the user by tilting the holding device and to move the device back and forth in the machining direction, as well as to carry out lateral movements with the device.

However, since the joint is arranged laterally on the base part and the base part has protruding parts, the lateral mobility is restricted.

From the DE 203 02 630 U1 is known a steam scrubbing machine with a handle part movable in the machining direction with respect to the base part, which has a water tank, a water pump, a heater and a steam distributor on the base part. As an advantageous further development, a vacuum cleaner unit, which is also attached to the base part and comprises an intake space, an intake pump, a suction channel and an intake opening, is disclosed for dry cleaning.

Furthermore, back vacuum cleaners with a back unit and a carrying frame are known, in which the back unit comprises at least one suction pump and one suction space. To increase the mobility, an energy store for supplying energy to the pump can also be provided in the back unit.

The DE 196 22 856 A1 discloses a hand-held surface scrubbing device which has at least one, preferably two plate brushes and at least one roller brush and which is moved supported on wheels. Furthermore, a suction bar is provided, which is preferably attached to the rear end of the cleaning device and which is connected to a hose Receptacle for dirty water is connected. A container for cleaning fluid is also attached to the surface scrubber.

However, this surface scrubbing device has the disadvantage that its weight is increased by the liquid containers attached to the device itself, and that the wheels allow easy movement in the linear direction, but do not allow any real mobility in the lateral direction.

From the EP 0 560 523 A2 a lip for a wiper is known which has on one side surface protrusions along its length with non-protruding spaces between the protrusions extending upwards from the lower edge, the other side surface being smooth. If this lip is moved with its smooth side over a floor, it forms a seal with the floor that does not let water through. If the lip with the side surface having projections is moved over the floor, water can flow through the spaces mentioned. This enables a suction unit consisting of two corresponding lips to absorb water in two directions, back and forth.

From the WO 2009/057934 A2 Another tillage device is known.

The invention has for its object to provide a soil tillage implement of the type mentioned which, in addition to polishing or grinding, also enables wet cleaning and is easy to move and operate by hand.

Presentation of the invention

This object is achieved by the features of patent claim 1. The inventive hand-held soil cultivation device has a base part with at least one tool for soil cultivation and a motor for driving the at least one tool, as well as a guide part with a handle part, the guide part having an articulated axis transverse to the working direction via a first joint which is adjustable in the working direction Bottom part is connected. The bottom part has a liquid supply and a liquid intake. Furthermore, a structurally separate suction unit is provided, which comprises at least one suction turbine for the absorption of liquid.

The shaping of the suction unit as a separate, structurally separate unit makes it possible to keep the weight of the base part low and thus to ensure that the base part can be moved as easily and without resistance by means of the guide part. According to the invention, the structurally separate suction unit comprises at least the suction turbine.

According to the invention, a container for the absorbed liquid is arranged on the guide part and connected to the structurally separate suction unit via a hose.

The structural separation of the container for the absorbed liquid from the suction turbine makes it easy to ensure that the suction turbine does not come into contact with liquid.

The container for the absorbed liquid is advantageously elongated along the guide part. As a result, the liquid in the container for the received liquid always remains as close as possible to the guide part, even when the guide part is inclined, as a result of which the weight of the liquid does not unnecessarily complicate the movement of the base part by means of the guide part.

The base part is advantageously supported exclusively on the tool for tillage.

This has the advantage that the mobility of the base part is not restricted by an extra support device with rollers. An additional support device can be dispensed with due to the low weight of the base part and the guide part.

The tillage device advantageously has at least one energy store and / or a power cable to an external energy supply for supplying the at least one tool for tillage and / or the suction turbine.

An external power supply of the soil cultivation device connected by means of a power cable has the advantage that the soil cultivation device can be operated without an energy store attached to the base part or the guide part, which makes it possible to keep the weight of the base part and the guide part very low, as a result of which the base part is very agile and easy to move by means of the guide part. In addition, connecting to an external power supply allows the tillage device to run indefinitely.

An energy store enables the soil tillage implement to be operated without being connected to an external energy supply, thereby increasing the range of motion of the soil tillage implement. This enables, for example, the cleaning of staircases by means of the soil cultivation device according to the invention.

It is possible to supply both the at least one tool attached to the base part and the suction turbine of the suction unit by means of the same energy supply. For this purpose, an energy store can be provided on the tillage implement or a power cable for connecting to an external energy supply.

Advantageously, at least one energy storage device is removably attached.

The weight of the tillage implement can thereby be reduced if the tillage implement is connected, for example, to an external energy supply. Furthermore, this enables the energy store to be changed, so that the operating time of the tillage device driven by the energy store which is removably attached to the device can be extended.

At least one energy store is advantageously attached to the base part and / or to the guide part.

Depending on the shape of the base part and the guide part, it may be advantageous to mount the energy store on the base part and / or on the guide part in order to ensure that the base part can be moved as easily as possible by means of the guide part.

According to the invention, a liquid tank is provided for the liquid supply.

The advantage is that no external water supply has to be connected, whereby a suitable hose would restrict the range of motion of the soil tillage implement.

According to the invention, the liquid tank is attached to the guide part.

This enables an advantageous compact form of the soil tillage implement. If, in addition to the liquid tank, the container for the absorbed liquid is also arranged on the guide part and / or on the base part, the total weight of the base part and guide part remains largely constant, as a result of which a constant pressure on the tools carrying the base part can be ensured. This enables a constant quality of cleaning through the tools for tillage.

According to the invention, the liquid tank attached to the guide part is elongated along the guide part.

This has the advantage that the liquid in the liquid tank is always as close as possible to the guide part, so that the weight of the liquid places as little stress as possible on the guide part even when the guide part is inclined, which makes it easier to handle.

If, in addition to the liquid tank, the container for the absorbed liquid is also attached elongated along the guide part, it may be possible to design these two liquid containers in the same way, which enables more cost-effective production.

The tool for soil cultivation advantageously consists of at least two counter-rotating and essentially horizontally rotating drive plates with processing attachments or at least two counter-rotating rollers with bristles.

The counter rotation of two drive plates, which are symmetrically arranged around the center of the soil tillage implement, results in a force-neutral state of the base part with an even number of drive plates and enables the base part to be guided easily and without resistance by means of the guide part over the floor. The same applies to rollers.

The processing attachments can advantageously be brushes, plates for pads or grinding wheels.

This has the advantage that the user only needs one tillage implement to carry out a wide variety of tasks, namely scrubbing, polishing and grinding, the attachment of the attachment attachments should be possible by hand without additional tools.

Brief description of the drawing

An embodiment not covered by claim 1 is shown in the drawing.

• Fig. 1 ein handgeführtes Bodenbearbeitungsgerät mit einer als am Körper zu befestigende Ein heit ausgebildeten Saugeinheit, die
• Fig. 2 eine Detailansicht eines Bodenteils und einer am Körper zu befestigende Einheit des Bodenbearbeitungsgeräts aus Fig. 1, die
• Fig. 3 einen Querschnitt des Bodenteils mit Führungs- teil und Griffteil des Bodenbearbeitungsgeräts aus Fig. 1, die
• Fig. 4 verschiedene Ausführungsvarianten eines Werkzeugs für die Bodenbearbeitung des Bodenbearbeitungsgeräts aus Fig. 1, die
• Fig. 5 A,B eine Veransahaulichung der Beweglichkeit des Bodenteils des Bodenbearbeitungsgeräts aus Fig. 4, die
• Fig. 6 ein handgeführtes Bodenbearbeitungsgerät mit einer als weitere Bodeneinheit ausgebildeten Saugeinheit.

It shows the

• Fig. 1 a hand-held tillage device with a unit designed to be attached to the body as a suction unit, the
• Fig. 2 a detailed view of a bottom part and a unit to be attached to the body of the tillage device Fig. 1 , the
• Fig. 3 a cross section of the bottom part with the guide part and the grip part of the tillage implement Fig. 1 , the
• Fig. 4 different variants of a tool for tillage of the tillage device Fig. 1 , the
• Fig. 5 A, B a Veransahaulichung the mobility of the bottom part of the soil tillage implement Fig. 4 , the
• Fig. 6 a hand-held tillage device with a suction unit designed as a further floor unit.

Embodiment

In the Fig. 1 a soil tillage implement is shown. A base part 1 can be guided by a user P via a guide part 2 and a handle part 3, the guide part 2 being connected to the base part 1 via two joints which together form a universal joint. A first joint 4 consists of a bracket 5 and an in Fig 3 shown, attached to the bottom part 1 axis 30, wherein a hinge axis GI, which in Fig. 3 is shown, runs along the axis 30 parallel to a machining surface B and transversely to the machining direction 6 and the bracket 5 can be moved about the axis GI in accordance with the direction indicated by the arrow 7. A second joint 8 connects the guide part 2 to the bracket 5, a joint axis G2 extending transversely to the joint axis GI and the guide part being able to be moved about the axis G2 in accordance with the direction indicated by the arrow 9. This enables the user P to rotate the base part 1 parallel to the machining surface B about its vertical axis AI even when the guide part 2 is inclined. The user P can thus rotate the machining direction 6 parallel to the machining surface B. For example, the user P can first move the bottom part away from him and then after rotating the bottom part to move by 180 °, the processing direction 6 correspondingly first moving away from it and then towards it.

The soil cultivation device has a liquid tank 10 for the liquid supply, which can be attached to the guide part 2, for example above the second joint 8, and is connected to the base part 1 via a liquid supply 11.

In the illustrated embodiment, it is advantageous to design the liquid tank 10 so that it extends at least partially around the guide part 2 and its dimensions in the direction transverse to the guide part 2 are as small as possible, while the dimensions along the guide part 2 can be larger. As a result, the movement of the guide part 2 is hampered as little as possible by the liquid also moving in the liquid tank 30 10.

The soil tillage implement has a splash guard 12 which is arranged on the outside on the base part 1 and extends as far as possible around the base part 1. The splash guard 12 has bristles or lips toward the processing surface B and is arranged such that its height above the processing surface B can be moved relative to the base part 1, so that it always rests on the processing surface B with its bristles or lips.

Furthermore, the bottom part 1 has on its underside a liquid receptacle 13 which extends transversely to the machining direction 6 as far as possible across the width of the bottom part 1 and is arranged in the direction of movement 6 behind the bottom part 1 and fastened to the splash guard 12 without the freedom of movement in terms of height to limit the splash guard 12 with respect to the bottom part 1.

In the exemplary embodiment shown, the structurally separate suction unit is designed as a unit 15 to be attached to the body by a user P. This unit 15 to be attached to the body is also designed as a back unit and is connected to the liquid receptacle 13 via a hose 14. The back unit 15 has a container 16 for the liquid absorbed by the bottom surface B and a suction turbine 17, which can be driven by a motor 18, which is also arranged in the back unit 15. For power supply, the motor 18 is powered and optionally also connected directly to the base part 1 via a control cable 19, it being possible for a connection to be provided on the back part 15 or on the base part 1, so that this connection between the back part 15 and the base part 1 can be released.

In a further embodiment variant, the power and control cable 19 can also be routed via the handle part 3 and / or the guide part to the base part 1, or a connection can be provided on the handle part 3 or on the guide part 2 to which the power and control cable 19 can be connected.

It can also be advantageous to arrange the container 16 for the liquid absorbed by the bottom surface B on the guide part 2, for example, and to connect it to the liquid receptacle 13 and the suction turbine 17 by means of a hose, since a very short suction path is possible, which improves the effective suction power of the suction turbine 17. Here, it is advantageous to shape the container 16 for the absorbed liquid elongated along the guide part 2, so that the absorbed liquid is always as close as possible to the guide part 2 and the mobility of the guide part 2 is not unnecessarily burdened by the weight of the absorbed liquid.

As a result of the fact that both the liquid tank for the liquid supply and the container 16 for the absorbed liquid are arranged on the guide part 2 and / or on the base part 1, the total weight of the base unit comprising the base part 1 and the guide part 2 remains essentially constant during the tillage. This makes it possible to keep the pressure on the at least one tool 31 for tillage constant and thus to guarantee a constant and reliable mode of operation.

Furthermore, it is possible to shape the container for the absorbed liquid and the liquid tank for the liquid supply in the same way, that is, to choose only one form for both containers, as a result of which the production costs of the tillage implement can be reduced.

Furthermore, the provision of the container 16 for the absorbed liquid on the base part 1 and / or on the guide part 2 has the advantage that when the hose which connects the container 16 for the absorbed liquid to the suction turbine 17 is released, no residual liquid remaining in the hose can leak, since the liquid remains in the lower-lying container 16 for the absorbed liquid.

The back unit 15 has a carrying frame 20, whereby the user P can comfortably carry it on the back.

For other embodiments of the unit 15 to be attached to the body, support frames adapted to the type of wearing can be provided accordingly and the shape of the unit to be attached to the body must also be adapted to the type of wearing. A back unit can, for example, be of elongated flat design and can be provided with a backpack-like carrying frame. If the unit to be attached to the body is to be worn around the waist, it must be made correspondingly smaller and equipped with a hip belt. For example, a unit to be fastened in front of the stomach cannot be made as long as is possible with a back unit.

In the Fig. 2 the back unit is off Fig. 1 shown in cross section. The container 16 for the absorbed liquid has an outlet opening 21 in the bottom region, to which an outlet hose 22 or also an outlet connector with a closure 23 is attached. The outlet hose 22 and the closure 23 are arranged in such a way that the shut-off valve 23 is operated by the user P and the liquid taken up can be drained from the container 16 for the liquid taken up via the drain hose 22, while the user P carries the back unit 15 on his back In order to increase the freedom of movement of the user P when draining the absorbed liquid, a connection with a coupling can be provided for the hose 14, so that this connection of the back unit 15 to the base part 1 can be released. Alternatively, a nozzle can also be provided on the base part 1. The hose or socket on the base part can also be designed as a siphon, which prevents residual water from escaping.

In this embodiment variant, the back unit 15 has an energy supply 24 for the motor 18 and a switch 25 for switching the suction turbine 17 on and off.

Furthermore, in the Fig. 2 the bottom part 1 of the soil tillage implement is shown from below without a processing attachment. Two drive plates 27 are driven in opposite directions and essentially horizontally by a motor 26. On the splash guard 12, which in this embodiment extends in a ring around the entire base part 1, the liquid receptacle 13 is attached in such a way that the free movement of the splash guard 12 in its height above the processing surface with respect to the base part 1 is not impaired. The liquid receptacle 13 has a suction rail 49 with two sealing lips 28, 29 spaced apart from one another in the machining direction 6, the front lip 28 in the machining direction 6 being corrugated as far as possible or having openings through which the rivers to be recorded when the base part 1 is moved in the machining direction 6 liquid can get into the area x between the two sealing lips 28, 29. This area x of the suction bar 49 between the sealing lips 28, 29 is over the Hose 14 connected to the suction unit designed as a back unit 15, so that liquid can be sucked up.

The Fig. 3 shows a cross section of the bottom part 1 with the guide part 2 and the grip part 3 of the tillage implement Fig. 1 . The joint 4 is shown again, which consists of the bracket 5 and the axis 30 which is fastened to the base part 1, the joint 4 being able to be moved about the joint axis GI in accordance with the direction indicated by the arrow 7.

Furthermore, the bottom part 1 has a tool 31 for tillage, which comprises the drive plate 27 and machining attachments 32, such as the brushes shown, the bottom part 1 being supported exclusively on the tool 31. The machining attachments 32 arranged on the drive plates 27 are driven by the motor 26, which is supplied by an energy store 33. This energy store 33 is attached to the base part 1 as detachably as possible and can be charged, for example, via a power cable. The motor 26 likewise preferably has a power cable 35, which makes it possible to dispense with the energy store 33 and to connect the motor 26 to an external energy supply.

The liquid supply 11 of the liquid from the liquid tank 10 takes place centrally through the drive plate 27.

The splash guard 12 can be loosely connected to the base part 1 with at least one bracket 36 reaching over the base part 1, so that it can move freely in height, that is to say in the direction of the arrow 37, during machining, but when the base part 1 is raised remains connected to the base part 1 via the at least one bracket 36. As a result, the user P can simultaneously lift and move the base part 1 and the splash guard 12 and does not have to move the splash guard 12 additionally.

The energy store for supplying the motor driving the suction turbine can also be arranged on the guide part, the energy store advantageously being attached below the tank 19 but above the joint 8.

In Fig. 4 execution variants of the tool 31 for soil cultivation are also shown. The Figure 4A shows a drive plate 27 with a processing attachment 32 in the form of a plate 48 for pads 38 and in Figure 4B a drive plate 27 is shown with a grinding wheel 39 as a machining attachment. The Figure 4C shows a bottom part 1 of a soil tillage implement, which has on its underside rollers 40 with bristles 41 as a tool 32 for tillage.

In Fig. 5 A, B is shown how the bottom part 1 of the tillage device can be rotated with the inclined guide part 2 by means of the joints 4 and 8 about the vertical axis AI of the bottom part 1, which is essentially perpendicular to the working surface B. By rotating the handle part 3 by 90 ° about a longitudinal axis A2 of the guide part 2, the base part is also rotated by 90 ° about the vertical axis AI, the bracket 5 thereby moving from an initial position inclined to the first machining direction 6 about the axis GI into one position is brought parallel to the axis AI and the guide part 2 is moved about the further joint axis G2 from an initial orientation parallel to a longitudinal axis A3 of the bracket 5 into an orientation oblique to the longitudinal axis A3 of the bracket 5. From this in Fig. 5B From the position shown, the base part 1 can also be rotated by a further 90 ° by rotating the handle part 3, so that the processing direction 6, which originally points in the direction away from the user P, is now directed towards the user P. is in the direction indicated by arrow 6 '.

Fig. 6 shows a tillage implement as in Fig. 1 is shown, with the difference that the structurally separate suction unit is designed as a further base unit 42. The base unit 42 has a container 43 for the liquid absorbed by the base surface B and a suction turbine 44 which can be driven by a motor 45 which is also arranged in the base unit 42. For power supply, the motor 42 is connected directly to the base part 1 via a power cable and possibly also via a control cable 46, it being possible for a connection to be made to the base unit 42, to the base part 1, to the guide part 2 or to the handle part 3 that this connection between the floor unit 42 and the floor part 1 can be released.

In a further embodiment variant, the power and / or control cable 46 can also be routed via the handle part 3 and / or the guide part to the base part 1 or a connection can be provided on the handle part 3 or on the guide part 2 to which the power and / or control cable20 46 can be connected.

Alternatively, the base unit 42 can also have a power cable that makes it possible to connect the motor 45 to an external power supply. As a further alternative, the base unit 42 can also have its own energy store 25 47 for the energy supply to the motor 45.

Claims (4)

1. Hand-guided floor treatment device, having a bottom part (1) with at least one tool (31) for treatment of a floor and a motor (26) for driving the at least one tool (31) and having a guide part (2) with a handle part (3), wherein the guide part (2) is connected to the bottom part (1) via a first articulation (4) adjustable in a treatment direction (6) with an articulation axis (G1) transversely to the treatment direction (6), wherein the bottom part (1) has a liquid feed (11) and a liquid receptacle (13), and wherein a suction unit structurally separate from the bottom part is provided, which contains at least one suction turbine (17) for taking up liquid, wherein the liquid receptacle (13) has a squeegee (49) with two sealing lips (28, 29) spaced from each other in the treatment direction (6), wherein the sealing lip (28) located in front in the treatment direction (6) has openings, through which openings, during movement of the bottom part (1) in the treatment direction (6), the liquid to be taken up may enter a region (x) between the two sealing lips (28, 29), wherein a container (16) for the taken up liquid is disposed on the guide part (2) and connected to the structurally separate suction unit via a hose, the container (16) for the taken up liquid is formed elongated along the guide part (2), a liquid tank (10) for the liquid feed (11) is provided, the liquid tank (10) is mounted on the guide part (2), and the liquid tank (10) mounted on the guide part (2) is formed elongated along the guide part (2).
2. Floor treatment device according to claim 1, characterized in that the bottom part (1) is exclusively supported on the tool (31) for the treatment of a floor.
3. Floor treatment device according to claim 1 or 2, characterized in that the floor treatment device has at least one energy storage device (24, 33) and/or a power cable (35) to an external power supply to supply the at least one tool (31) for the treatment of a floor and/or the suction turbine (17).
4. Floor treatment device according to claim 3, characterized in that at least one energy storage device (33) is mounted on the bottom part (1) and/or on the guide part (2).

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