EP1961518A1 - Handheld clearing/grinding machine - Google Patents

Abstract

The machine (10) has a holding device (12) for holding the machine. A tool head is provided for multiple cleaning tools and/or polishing tools, which includes a tool drive shaft driven by a drive motor. A transmission device transmits torque from the drive motor to the tool drive shaft. A coupling (152) is arranged at the holding device for connecting a fluid line. Another fluid line leads to the tool head from the coupling.

Description

The invention relates to a hand-held cleaning / grinding machine, comprising a holding device for holding the cleaning / grinding machine, a drive motor, a tool head for one or more cleaning tools and / or grinding tools, which has a driven via the drive motor tool drive shaft, and a transmission device for transmitting torque from the drive motor to the tool drive shaft.

Such cleaning / grinding machines are used for surface treatment.

From the EP 0 727 281 B1 For example, a motorized sander is known which comprises a drive motor mounted on a distal end of a tubular rod and a flexible drive shaft operatively coupled to the drive motor and extending along the length of the tubular rod. A sanding pad is operatively coupled to the flexible drive shaft, which shaft provides for effective coupling at different positions of the head with respect to the tubular rod.

From the US 5,239,783 A a grinding machine is known in which a drive motor is coupled to a flexible shaft, which is guided in a flexible sheath.

From the US 4,782,632 A a hand-held grinding machine is known in which the motor is coupled to a shaft and a tool is coupled to a shaft, wherein the two shafts are coupled via a flexible spring drive.

From the DE 81 00 197.5 U1 For example, there is known a floor sanding machine having an abrasive motor driven sandpaper coated abrasive wheel. On the motor housing of the electric motor suitable for handling the grinding machine by a standing operator guide rod is arranged.

From the DE 100 01 091 A1 an electric hand tool is known, in which a tool holder is coupled via a spindle with a drive shaft in a transmission housing, wherein the transmission housing is formed in two parts and the two parts of the transmission housing in an oblique to the drive shaft and the spindle Verdrehebene are rotated relative to each other and in the each desired Verdrehlage can be locked.

Other hand-held grinders are from the US 4,685,252 A , of the US 4,974,371 A and the US 1,134,116 known.

From the EP 1 066 122 B1 For example, a cleaning apparatus for cleaning the outer skin of aircraft and land vehicles or of hulls is known, which has a cleaning head, which is arranged at the free end of an elongated, tubular shaft. The cleaning head comprises a means of an electric motor rotatory or oscillatory drivable cleaning tool. The electric motor is arranged within a remote from the cleaning head handle portion with handles for guiding the cleaning device and drive coupled via a flexible shaft with the cleaning tool. The cleaning head is pivotable about a transverse to the central longitudinal axis of the cleaning device and this intersecting axis, wherein a locking device is provided by means of which the cleaning head in defined orientations with respect to a central axis of the shaft and the axis containing longitudinal center plane of the shaft is releasably detectable. There is provided a spray device with which a cleaning liquid can be sprayed into a work area. The liquid supply to spray nozzles via a fixed along the shaft supply pipe, which is connected in a handle portion to a flexible supply line leading to a reservoir.

From the WO 99/05955 A1 For example, a cleaning machine is known in which a liquid reservoir with a pump is arranged on a shaft. Processing tools liquid is provided via a liquid line from the liquid reservoir.

The invention has for its object to provide a hand-held cleaning / grinding machine of the type mentioned, which is universally applicable.

This object is achieved in the above-mentioned hand-held cleaning / grinding machine according to the invention that at least one coupling for connecting at least one first liquid line is arranged on the holding device and that at least one second liquid line leads from the at least one coupling to the tool head.

The inventive solution, it is possible to connect an external fluid source such as a faucet, for example via a hose as a first fluid line to the cleaning / grinding machine according to the invention and / or, for example, connect an "internal" fluid source such as a arranged on the cleaning / grinding liquid container. As a result, an operator can, for example, resort to a water supply network when the water consumption is high and the water supply network is available. If the water line network is not available then liquid can be provided from the internal liquid source.

The liquid may be, for example, cleaning fluid or grinding fluid.

The hand-held cleaning / grinding machine can be used, for example, only as a cleaning machine, if a corresponding cleaning tool such as an oscillating or rotating rotary brush is used. It is also possible to use only as a grinding machine when a grinding wheel is used as the grinding tool (or polishing tool).

It can also be provided that the cleaning / grinding machine contains the cleaning processing and the grinding machining as adjustable options, for example via adjustment of the rotational speed of the drive motor.

According to the invention, a cleaning / grinding machine is provided, which is easily adaptable to the processing to be performed.

The drive motor is for example an electric motor, which is operated by mains power or operated by a battery. But it is also possible in principle that the drive motor, for example, is an internal combustion engine.

It is advantageous if (at least) a liquid container is arranged on the holding device. This can provide an internal source of fluid such as cleaning fluid or grinding fluid. This can provide fluid to the tool, even if no access to an external source is possible.

Conveniently, a liquid line is connected to the liquid container, which is connectable to the at least one coupling. This liquid line forms in particular the first liquid line. An operator may decide to connect this liquid line connected to the liquid container to the coupling or, for example, to an external source. It is also possible that a tool of the cleaning / grinding machine both fluid is supplied from the liquid container as an internal source and from an external source. For example, water is supplied from the external source and a liquid detergent is supplied from the liquid container.

It is particularly advantageous if, by means of the at least one coupling, optionally an external hose and / or the liquid line connected to the liquid container can be fluid-effectively connected to the second liquid line. This allows an operator to choose where the liquid should come from for the cleaning or grinding process.

In particular, the liquid container is designed as a pressure vessel. As a result, the fluid delivery from the liquid container to the tool head can be performed in a simple manner.

In particular, a pump is arranged on the liquid container in order to pressurize the liquid in the liquid container and thereby to allow the conveyance of the liquid to the tool head at each position of the cleaning / grinding machine.

It is basically possible that the pump is, for example, an electric pump. In a structurally simple embodiment, the pump is a hand pump. An operator can fill up the liquid container and then generate pressure via the hand pump.

It is particularly advantageous if the liquid container or a part of the liquid container is detachably fixed to the holding device. As a result, filling is possible in a simple manner. The liquid container can be removed and filled up and then fixed again to the holding device.

Conveniently, a suction line is arranged in the liquid container, which is fluidly connected to the liquid line connected to the liquid container. Liquid can be sucked out of the liquid container via the suction line and fed to the tool head.

It is particularly advantageous if the suction line is designed to be flexible. It can then take with the liquid container, depending on the position of the liquid container relative to the direction of gravity, a position which is at or in the vicinity of a relation to the direction of gravity lower portion of the liquid volume. Due to the flexible design, this suction line can automatically take the appropriate position. This ensures that liquid from the liquid container can be conveyed at any position of the cleaning / grinding machine. For example, this also a liquid delivery is possible when working upside down.

It is advantageous if a weight element is arranged on or in the vicinity of an inlet of the suction line. The weight element ensures the corresponding gravity alignment of the suction line.

It is particularly advantageous if a handle is arranged on the holding device between an end adjacent to the tool head and an end facing away from the tool head. The holding device has a handle portion on which this handle is arranged. This can hold and guide the hand-held cleaning / grinding machine.

Advantageously, the handle is designed as a bow handle. As a result, a secure grip is possible and it can also exert sliding forces and tensile forces on the tool head.

It is particularly advantageous if a position of the handle on the holding device is variably adjustable. As a result, an operator can adjust the holding position to his height and / or the special processing operation. For example, an adaptation is possible if a soil treatment, a wall processing or a ceiling treatment is to be performed.

In particular, the handle is arranged on a fixing device.

It is advantageous if the fixing device is detectably slidably positionable on the holding device. For example, the fixing device is designed as a clamp holder. By clamping the clamping holder on the holding device, the position of the handle is fixed.

Advantageously, a distance of the handle to the at least one clutch is adjustable to allow a variable adjustment.

For the same reason, it is favorable if a distance of the handle to a fixing device of the tool head on the holding device is adjustable. As a result, in particular the distance of the holding position of the operator to the tool head is adjustable.

In particular, a liquid container is arranged on the fixing device of the handle. By the fixing device for the handle is a device is provided, on which the liquid container can be easily arranged. The hand-held cleaning / grinding machine can be trained in a simple manner.

The liquid container is preferably fixable with the fixing device of the handle slidably positioned on the holding device. This results in a simple structural design of the hand-held cleaning / grinding machine according to the invention. In particular, it is ensured that the adjustability of the position of the handle is not hindered by the liquid container.

Due to the displaceability of the fixing device on the holding device and a distance of the liquid container to the at least one coupling is variable. Accordingly, it is favorable if a liquid line, which leads from the liquid container to the at least one coupling for connection to the latter, is designed so flexibly that it allows the variation in distance.

In a manufacturing technology simple embodiment, the fixing device of the holding device comprises a clamping holder for fixing to the holding device.

In particular, the handle is positioned between the drive motor and the at least one clutch, ie positioned in a central grip portion of the cleaning / grinding machine.

It is also advantageous if a handle is provided which is arranged at or in the vicinity of one end of the holding device, which is adjacent to the tool head. It is thereby formed another grip portion on which an operator can hold the hand-held cleaning / grinding machine. This allows a further adaptation to the special processing conditions and also to the height of an operator.

In particular, the handle is designed as a bow-shaped grip or ball grip in order to enable secure holding and, for example, to be able to exert tensile forces or pushing forces.

It is advantageous if a distance of the handle to the at least one clutch is adjustable. This results in universal applications. Furthermore, the processing is facilitated if a corresponding adjustability is possible.

Conveniently, a distance of the handle relative to a fixing device of the tool head on the holding device is adjustable.

It is envisaged that the at least one coupling between the handle and a further handle, which is arranged on the holding device, is positioned. The further handle forms a first handle portion and the other handle a second handle portion. In one embodiment, the handle is held on a second element of the holding device, which is at least partially immersed in a receiving space of a first element of the holding device. This makes it easy to adjust the position of this handle on the holding device.

In a manufacturing technology simple embodiment, the second element is a rod.

It is also advantageous if the first element is a tube. The corresponding holding device can be produced in a simple manner.

It may further be provided that the at least one clutch is arranged on the first element and is fixed there.

Furthermore, it is favorable if a handle is provided which is arranged on or in the vicinity of an end of the cleaning / grinding machine facing away from the tool head. This allows an operator to hold the hand-held cleaning / grinding machine at or near the top. For example, the cleaning / grinding machine in this area can be held in the manner of a tool handle (such as broomstick or shovel handle).

In one embodiment, this handle has a palm. This makes it possible to achieve a secure grip.

It is advantageous if the handle is designed as a cylindrical handle.

It is also possible that the handle protrudes beyond the drive motor. As a result, the holding in this area is not hindered by the drive motor.

In an alternative embodiment, the handle is formed on a motor housing of the drive motor, d. H. This motor housing itself acts as a handle.

It may be provided that the handle, which is arranged on or in the vicinity of the tool facing away from the end of the cleaning / grinding machine, is removable. As a result, for example, the length dimensions of the cleaning / grinding machine for transport and storage can be reduced.

It is particularly advantageous if the drive motor is arranged on the holding device and is arranged in particular in an upper end region of the holding device. As a result, the transmission device for torque transmission from the drive motor to the tool head can be formed in a simple manner. Furthermore, a counterweight to the tool head can be provided via the drive motor in order to facilitate the operability. Furthermore, the cleaning / grinding machine can be compact.

It is in principle possible that the drive motor is removable and is designed in particular in connection with a corresponding motor housing so that a machining tool such as a grinding wheel can be positioned on the motor housing. This provides a universally applicable machine.

In particular, the drive motor is arranged at or in the vicinity of an end facing away from the tool head on the holding device. As a result, the operability is facilitated because, for example, in the wall processing of the drive motor must be lifted by a lower height.

It is particularly advantageous if the drive motor has an adjustable rotational speed in order to enable an optimized adaptation to a machining process and a universal application.

It is particularly advantageous if the drive motor has at least one first speed gear for cleaning operations and a second speed gear for grinding operations. Usually, a higher speed is required for grinding operations than for cleaning operations, or cleaning operations should not be performed at too high a speed to prevent damage to the surface to be cleaned.

For example, a tool speed is provided for the first speed gear, which is below 2000 revolutions per minute. The speed of the drive motor may differ from the tool speed, since, for example, the torque transmission device comprises a speed reduction.

It can also be provided that a tool speed for the second speed gear is at a speed above 2000 revolutions per minute. For example, a tool speed for the first speed gear is about 1000 revolutions per minute and for the second speed gear at about 3000 revolutions per minute.

Advantageously, the tool head is arranged with a fixing direction pivotable about at least one pivot axis on the holding device. As a result, for example, a simple wall workability or soil workability can be realized, since the angle between the holding device and the processing surface is adjustable.

In an advantageous embodiment, the at least one pivot axis is oriented transversely to a longitudinal direction of the holding device. Thereby, the angular position of a working surface of the machining tool can be adjusted relative to the longitudinal axis of the holding device.

In a structurally simple embodiment, the fixing device for the tool head comprises a holding fork. About a support fork can be easily realized a pivot bearing for the pivotal mounting of the tool head on the holding device.

It is favorable if the fixing device for the tool head comprises an arc element which is positioned on the holding device. The tool head can be positioned at a distance from the holding device via the sheet element, so that a pivoting movement of the tool head is not hindered by the holding device.

Advantageously, the second liquid line is at least partially guided in the arch element. As a result, at least a portion of the second fluid line can be protected; The arch element forms a housing for this. Furthermore, the liquid line can be easily guided to the tool head.

In one embodiment, the tool drive shaft is connected to a flexible drive shaft which is driven by the drive motor. By a flexible shaft can be easily transferred from the holding device to a pivotable tool head, the torque of the drive motor.

It can be provided that one or more connection elements for a holding strap device are held on the holding device. About the tether device, the cleaning / grinding machine can be supported on the body of the operator, so that the force required to hold the cleaning / grinding machine is reduced. For the provision of one or more connection elements, the tether device can be fixed in a simple manner to the holding device.

It is favorable if a minimum length of the holding device is in the range between 0.50 m and 2.5 m. The corresponding cleaning / grinding machine is then designed as a long-necked machine. It can be realized a lance device in which the distance between the operator and the processing surface, for example, greater than 0.50 m can be maintained.

In one embodiment, a receptacle is arranged on the holding device, for example in the form of a receiving box with a receiving space for the second liquid line (and optionally a clutch, which is arranged on the second liquid line), if it is not connected to the coupling to the holding device. It is then, if the second liquid line is not needed, this possibly with the store corresponding coupling in the receiving space of the recording and thereby protect or it is prevented that the second liquid line hangs loose and interferes with a machining operation.

It is advantageous if a liquid container is arranged on the receptacle. As a result, the hand-held cleaning / grinding machine according to the invention can be produced in a simple manner and results in an optimal use of space for the components of the machine.

In one embodiment, a liquid container is provided, which is portable by an operator and can be connected to the coupling of the holding device fluidly effective. Such a liquid container is for example carried by the operator like a backpack. It can thereby provide a larger volume of liquid. For example, in principle it is also possible that both a liquid container which is held on the holding device and the liquid container carried by the operator are coupled via a double clutch to the coupling of the holding device.

It can also be provided that a fixing device for a holding strap or tether is arranged on the holding device. The fixing device has, for example, a holding eye for the holding strap or tether. It is thus possible in a simple manner to fix the tether or tether on the holding device. Under certain circumstances, the operability for an operator is facilitated if he can hold the machine, for example, a shoulder strap as a tether.

Figur 1

eine perspektivische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Reinigungs-/Schleifmaschine;

Figur 2

eine Schnittansicht der Reinigungs-/Schleifmaschine gemäß Figur 1 und eine Variante davon;

Figur 3

eine vergrößerte Darstellung des Bereichs A gemäß Figur 1;

Figur 4

eine perspektivische Darstellung eines Werkzeugkopfs der Reinigungs-/Schleifmaschine gemäß Figur 1 (Bereich A); und

Figur 5

eine perspektivische Darstellung eines weiteren Ausführungs-beispiels einer erfindungsgemäßen Reinigungs-/Schleifmaschine.

The following description of preferred embodiments is used in conjunction with the drawings for a more detailed explanation of the invention. Show it:

FIG. 1

a perspective view of an embodiment of a cleaning / grinding machine according to the invention;

FIG. 2

a sectional view of the cleaning / grinding machine according to FIG. 1 and a variant thereof;

FIG. 3

an enlarged view of the area A according to FIG. 1 ;

FIG. 4

a perspective view of a tool head of the cleaning / grinding machine according to FIG. 1 (Area A); and

FIG. 5

a perspective view of another embodiment of a cleaning / grinding machine according to the invention.

The device according to the invention is a cleaning / grinding machine. The device can be designed as a pure cleaning machine or as a pure grinding machine. It is also possible that the device according to the invention can be used both as a cleaning machine and as a grinding machine.

An embodiment of a cleaning / grinding machine according to the invention, which in the FIGS. 1 to 3 shown and designated there with 10 is, being in FIG. 2 also a variant is shown, comprises a holding device 12 for the cleaning / grinding machine. About the holding device, an operator can hold the cleaning / grinding machine 10 and perform a machining operation such as a cleaning process or grinding process. On the holding device 12, a tool head 16 is held via a fixing device 14. A tool such as a cleaning tool (for example, a cleaning brush) or a grinding tool such as a grinding wheel or polishing pad can be fixed to the tool head 16.

The cleaning / grinding machine 10 according to the invention is designed in particular as a long-necked machine. For this purpose, the holding device 12 has a minimum length between a first end 18 and a second end 20 (FIG. FIG. 1 ) or 20 '( FIG. 2 ), which is in the range between 0.50 m and 2.5 m. An operator of the cleaning / grinding machine 10 can thereby set up at a corresponding distance from the processing surface. As a result, for example, a convenient cleaning process of a floor surface is possible. Furthermore, this makes it possible to reach even higher areas on walls.

The holding device 12 comprises a first element 22. This element 22 extends in a longitudinal direction 24. It is rod-shaped. It has a typical length greater than or equal to 0.5 m. An outer surface of the first element 22 is preferably formed edge-free. For example, the first element 22 is formed in the outer cross-section oval-shaped.

The first element 22 has a first receiving space 26 in which a rod 28 is longitudinally displaceable in a direction 30 parallel to the longitudinal direction 24 is displaceable. The first receiving space 26 is in particular (hollow) cylindrical and the rod 28 has a cylindrical outer surface adapted thereto. The rod 28 forms a second element, which is guided on the first element 22.

The rod 28 can be fixed in a shift position, in particular steplessly on the first element 22, for example via a clamping device 32.

At one end of the rod 28 sits a handle 34. This handle 34 is formed as a bow handle with an example cylindrical holding member 36 which is fixed on spaced bars 38a, 38b on the rod 28. The holding element 36 is oriented transversely and in particular perpendicular to the direction 30. An operator comprises the holding element 36 with one hand, wherein the hand is oriented at least approximately parallel to the longitudinal direction 24.

The rod 28 or the handle 34 define the first end 18 of the holding device 12. The position of the rod 28 with respect to the first element 22, the total length of the holding device 12 is variably adjustable. An operator can adjust the length of the retainer 12 via the rod 28 with the handle 34 to the particular machining operation.

The first element 22 has a further receiving space 40 (FIG. FIG. 2 ), in which a part of a transmission device for transmitting the torque of a drive motor 42 is guided to the tool head 16 and arranged protected. The second accommodating space 40 is separated from the first accommodating space 26.

It is basically possible that the second receiving space 40 is arranged in a separate element from the first element 22, in which case this element is then fixed to the first element 22. In the embodiment shown, the first receiving space 26 and the second receiving space 40 are arranged in the same element, namely the first element 22.

On the first element 22 of the holding device 12, the drive motor 42 is fixed. The drive motor 42 is arranged in a motor housing 44. The drive motor 42 has a motor shaft 46, which is connected to a designated as a whole by 48 transmission device. In particular, the transmission device 48 comprises a shaft 49. The motor shaft 46 and / or part of the transmission device 48 (in particular the shaft 49) are arranged in the second receiving space 40. As a result, the torque of the drive motor 42 can be transmitted through the holding device 12 to the tool head 16. In particular, a shaft is rotatably mounted in the second receiving space 40, through which the torque of the drive motor 42 through the second receiving space 40 is transferable.

The drive motor 42 is fixed via its motor housing 44 with a fixing device 50 on the holding device 12 and in particular the first element 22 of the holding device 12. The fixing device 50 comprises, for example, a clamping holder 52, which is fixed in a clamping manner on the first element 22. The clamping holder in turn holds the motor housing 44 with the drive motor 42. The clamping holder 52 is arranged and formed so that the drive motor 42 is seated below an extension of the first element 22 in the longitudinal direction 24.

The drive motor 42 is in particular an electric motor which can be supplied with electrical energy by mains current. (In FIG. 2 a cable connection is indicated by the reference numeral 54). On the motor housing 44, a switch 56 for adjusting the rotational speed of the drive motor 42 is arranged. This switch 56 is arranged in particular laterally. The drive motor 42 has, for example, two different speeds (gears on).

On an underside of the motor housing 44 on / off switch 57 is arranged, via which the operation of the drive motor 42 can be switched on or off.

It is also possible in principle that the drive motor is a battery-powered electric motor. Furthermore, it is also possible in principle that the drive motor is, for example, an internal combustion engine or a pneumatic or hydraulic drive motor.

In one embodiment, it is provided that the drive motor 42 has a variable speed, so that depending on the application, the appropriate speed is adjustable. For example, it is provided that the drive motor 42 has a first speed gear for a cleaning processing and a second speed gear for a grinding operation. The required speed for grinding operations is usually higher than for cleaning operations. For example, the drive motor 42 is designed so that a grinding tool with speeds greater than 2000 revolutions per minute and a cleaning tool with speeds less than 2000 revolutions per minute is operable. In a specific embodiment, the drive motor 42 is designed so that a grinding tool with a speed in the order of 3000 revolutions per minute is operable and a cleaning tool with a speed of the order of 1000 revolutions per minute is operable.

The speed of the motor shaft 46 does not have to match the speed of a drive shaft 58 of the tool head 16. By the transmission device 48 from the drive motor 42 to the tool drive shaft 58, in particular, a speed reduction can take place.

At the in FIG. 1 In the embodiment shown, the second end 20 of the holding device 12 is determined by one end of the motor housing 44. The motor housing 44 forms a handle 60 over which an operator can hold the cleaning / grinding machine 10. An operator can grasp the motor housing 40 with one hand. The hand is oriented with the fingers across the longitudinal direction 24. In this example, the first element terminates at the clamp holder 52.

In a further embodiment, which in FIG. 2 is shown, a rod 62 is disposed on the first element 22 in the region of the clamping holder 52, on which a further handle 64 is seated. The rod 62 is located above the motor housing 44 substantially parallel to this and protrudes beyond the motor housing 44. The handle 64 thereby also protrudes beyond the motor housing 44. The handle 64 in this case has a palm 66 and a holding element 68. The holding element 68 is cylindrical, for example, so that the handle 64 is a cylindrical handle. An operator may include the handle 64 with one hand, wherein when grasped the fingers are substantially transverse to the longitudinal direction 24.

It can be provided that the rod 62 with the handle 64 is removable from the first element 22. It is also possible that the rod 62 is fixedly arranged on the first element 22. Further, it is possible that the rod 62 is fixed and in particular integrally connected to the first element 22.

Furthermore, it is possible that the rod 62 is arranged displaceably on the first element 22 and in particular partially immersed in the first receiving space 26.

The length of the holding device between its first end 18 and its second end 20 or 20 'is determined by the position of the handle 34 relative to the first element 22. If the position of the handle 64 relative to the first member 22 is variable, then the length of the retainer 12 in the longitudinal direction 24 is also determined by how the handle 64 is positioned relative to the first member 22.

It is also possible in principle that the drive motor 42 is not seated on the holding device 12, but is held separately, for example, by an operator. For example, an operator holds the drive motor with a tether. Accordingly, then the transmission device must be formed by the drive motor.

At or near the end of the rod 28, which is adjacent to the tool head 16, an arch member 70 is disposed on the retainer 12. This arch member has a first portion 72a in which it is transverse and substantially perpendicular to the longitudinal direction 24 of the first element 22 extends away. It has a second region 72b in which it extends substantially parallel to the longitudinal direction 24 of the first element. Between the first region 72a and the second region 72b, a transition region 72c is arranged. With the second region 72b, the arch member 70 projects beyond the end of the rod 28.

The arch element 70 is fixedly arranged on the holding device 12.

The tool head 16 is pivotally mounted on at least one axis of the sheet member 70 and is thus pivotable about this at least one axis relative to the holding device 12. A fixing device 74 for a pivotable mounting of the tool head 16 on the holding device 12 is formed over the curved element 70.

The fixing device 74 comprises a holding fork 76 with a first web element 78a and a second web element 78b. The two web elements 78a and 78b are spaced from one another with a gap 80 between them.

The tool head 16 has a holding region 82, which is cylindrical, for example. Arranged on this holding region 82 is a shaft 84, which projects beyond the holding region 82 on both sides. The shaft 84, which can be realized via one or two pin elements, is in particular fixedly arranged on the holding region 82. The web elements 78a and 78b have corresponding, adapted to the shaft 84 openings 86a, 86b, in which the shaft 84 is immersed. About corresponding, seated on the shaft 84 securing elements 88, the movement of the web elements 78a, 78b after Locked outside of the holding area 82 out. (The movement inwards towards the holding region 82 is blocked by the holding region 82 itself.) As a result, via the shaft 84 and the web elements 78a, 78b with their openings 86a, 86b a pivot bearing 90 is formed, which has a pivot axis 92. The pivot axis 92 is oriented transversely and in particular perpendicular to the longitudinal direction 24 and the displacement direction 30.

Due to the pivoting of the tool head 16 about the pivot axis 92, its position with respect to the holding device 12 can be adjusted. For example, in the case of tillage, the angle of the holding device 12 can be adapted to the ground. When editing a wall, the angle to the wall and thus the distance of an operator to the wall can be adjusted.

The tool head 16 comprises a bearing device 94 for the tool drive shaft 58, in which it is rotatably mounted about a rotation axis 96. In the bearing device 94, which is formed housing-shaped, the tool drive shaft 58 is arranged protected. The holding region 82 is seated on the bearing device 94.

A tool 98 (such as a cleaning tool or polishing tool) is rotatably connected to the tool drive shaft 58 connectable. The tool head 16 has, for example, a bayonet lock 99 in order to be able to fix a corresponding tool 98.

On the bearing device 54 sits a protective cover 100, which covers the tool 98 partially upwards and to the side. The protective hood 100 extends in an angular range (with respect to the axis of rotation 96), which is smaller than 360 °. In the embodiment shown, the protective cover 100 extends in an angular range of approximately 180 °. As a result, the tool 98 comes out of the protective hood in, for example, a front region 102. As a result, for example, a processing on corners or edges is possible.

The protective hood 100 can be rotatably fixed to the tool head 16 via a corresponding bearing device 101. In particular, a rotational position or pivoting position of the protective hood 100 relative to the holding region 82 can be set. A corresponding axis of rotation / pivot axis is at least approximately parallel to the axis of rotation 96 of the tool 98. A corresponding rotation or pivoting of the guard 100 is in FIG. 4 indicated by the double arrow with the reference numeral 103. By the rotation or pivoting of the protective hood 100 is adjustable, as the front portion 102 is located to the holding device 12.

The protective hood 100 has an upper area 104a and a side area 104b. The upper region 104a is oriented with a surface normal substantially parallel to the rotation axis 96. The side region 104b is oriented with a side wall substantially parallel to the axis of rotation 96 or with a normal transverse and in particular perpendicular to this.

It can be provided that on the side portion 104b, a lip 106, for example, of a rubber material or in the form of a brush ring is arranged, which is placed on a processing surface and provides a fluid seal between the processing surface and the guard 100.

Between the tool 98 and the side portion 104b, a clearance 108 is formed.

The arch element 70 is arranged facing down on the holding device 12. It points to the same side as the drive motor 42.

Between the first element 22 and in particular between the second receiving space 40 of the first element 22 and the tool head 16, a curved protective housing 112 is arranged, in which a flexible drive shaft 114 is guided. The drive shaft 114 is rotatably connected to the tool drive shaft 58. It is also part of the transmission device 48. It is rotatably connected directly or via one or more intermediate shafts to the drive motor 42. The protective housing 112 and the drive shaft 114 are designed so that in each permitted pivot position of the tool head 16 relative to the holding device 12, a torque transmission to the tool drive shaft 58 (and thus to the tool 98) is ensured.

The protective housing 112 is connected to the first element 22, in particular in the region of the arch element 70. The connection is arranged below the first receiving space 26, so that the displaceability of the rod 28 is not hindered.

On the first element 22, a fixing device 116 is arranged, which is lockable displaceable on the first element 22. The fixing device 116 comprises, for example, a clamping holder 118, which is displaceable in one direction 120. The direction 120 is parallel to the longitudinal direction 24 and to the direction 30. By clamping the clamping holder 118, the fixing device 116 can be fixed in translation-resistant manner to the first element 22.

The fixing device 116 carries another handle 122, which is designed as a bracket. The handle 122 protrudes beyond the first member 22 on an upper surface. The upper side is facing away from the side on which the tool head 16 is arranged.

The handle 122, which is bow-shaped, is arranged on a holding element 124 of the fixing device 116. It is annular or rectangular in shape with a first region 126a, a spaced opposite second region 126b and a third region 126c, which connects the first region 126a and the second region 126b spaced from the holding element 124. The first region 126a is arranged transversely and in particular perpendicular to the third region 126c. The second region 126b is arranged substantially parallel to the first region 126b. Between the areas, a free space 128 is formed toward the holding element 124. An operator may selectively grip the handle 122 at the first region 126a, the second region 126b, or the third region 126c.

For example, it is also possible for an operator with one hand to hold the handle 122 at the first area 126a and the other at the second area 126b.

The third region 126 c is oriented transversely and in particular perpendicular to the longitudinal direction 24. When an operator holds the handle 122 at the third area 126 c, his hand is oriented substantially parallel to the longitudinal direction 24.

At the fixing device 116 and in particular the holding element 124 (at least) a liquid container 130 is disposed in the free space 128. The liquid container 130 may receive a liquid such as water or a cleaning liquid. The liquid container 130 is detachable from the fixing device 116.

At the fixing device 116 to a liquid container holder 132 is fixed. The liquid container holder 132 is in particular fixedly arranged on the holding element 124. The liquid container holder 132 includes an internal thread 134, in which the liquid container 130 is screwed with a corresponding external thread 136.

On the liquid container holder 132, a hand pump 138 with a pump handle 140 is arranged. The hand pump 138 can be used to manually increase the pressure below which liquid is in the liquid container 130.

In the liquid container 130, a suction line 142 is arranged, via which liquid from the liquid container 130 can be sucked. To the Liquid container 130 is further connected to a liquid line 144 which is in fluid communication with the suction line 142. Through the liquid line 144 can liquid from the liquid container 130, which is sucked in via the suction line 142, dissipate.

The suction pipe 142 is made of a flexible material. At its lower end, a weight element 146 is arranged, for example, made of metal. The flexible design of the suction line 142 and the weight element 146 ensures that an inlet 148 of the suction line 142 is located in a lower region of the liquid container 130 relative to the direction of gravity. Thereby, a suction of liquid from the liquid container 130 for all positions of the cleaning / grinding machine 10 with respect to the direction of gravity is possible. In particular, overhead wet processing is possible.

In FIG. 2 schematically a liquid level 150 is shown when the holding device 12 is oriented with its longitudinal direction 24 obliquely to the direction of gravity g. The flexible design of the suction line 142 ensures that the inlet 148 is below the liquid level 150 for each angular position. (In FIG. 2 the suction line 142 is drawn straight for illustrative reasons; this position is taken when the longitudinal direction 24 is parallel to the direction of gravity g and thus the liquid level 150 is perpendicular to the direction of gravity g. At the in FIG. 2 shown position of the cleaning / grinding machine 10 to the direction of gravity g, the suction line 142 is moved with its weight element 146 in comparison to the position shown down.)

At least one coupling 152 is arranged on the holding device 12 on the first element 22 in the vicinity of a lower end of the first element 22. At one end of the liquid line 144, a coupling 154 is also arranged ( FIG. 1 ). The clutches 152 and 154 are in particular standard clutches. Via the coupling 154, the liquid line 144 can be connected to the coupling 152 in a fluid-effective manner. As a result, liquid can be conducted from the liquid container 130 to the coupling 152.

The liquid line 144 is designed in particular as a spiral line. The distance between the coupling 152 and the fixing device 116 is dependent on the position of the fixing device 116 (from the position of the clamping holder 118) on the first element 22. As a result, the distance of the liquid container 130 to the coupling 152 is variable. The design as a spiral line, a connection of the liquid line 144 to the clutch 152 at each position of the liquid container 130 is possible.

The liquid line 144 is a first liquid line which can be connected to the coupling 152.

Optionally, an external fluid line 156 can also be connected to the coupling 152 as the first fluid line ( FIG. 2 ). In particular, the external fluid line 156 is a fluid tube connected to a fluid tank 158 or connected to another source of water, such as a faucet. Accordingly, the external fluid line 156 has a coupling 160, which is connectable to the coupling 152.

The liquid line 144 is guided above the holding device 12 (above the first element 22). In particular, the liquid line 144 is exposed, d. H. it is only connected to the liquid container 130 and not otherwise fixed to the holding device 12.

From the coupling 152, a second liquid line 162 passes through the holding device 12 on the first element 22 (and thereby past the first receiving space 26) through an interior of the arch element 70 and through the gap 80 on the holding fork 76 to the liquid line 110. The tool As a result, liquid can optionally be made available via the fluid tube 158 or via the fluid container 130. About the provided liquid, which may be water or other cleaning fluid (possibly with a cleaning additive), the cleaning effect or grinding effect can be improved. The lip 106 serves to increase the "residence time" of the liquid on the tool 98 by reducing backflow of liquid.

It is also possible in principle for a plurality of clutches 152 and in particular a first and a second clutch to be arranged instead of a single clutch 152 (not shown in the drawing). Via a coupling, the external fluid line 156 can be connected to provide, for example, water. Via the other coupling, the liquid line 144 can be coupled to provide liquid and in particular cleaning liquid from the liquid container 130. It can then be a mixture of water and cleaning fluid in the clutches, and the tool 98 may be supplied in this embodiment, a cleaning liquid-water mixture.

The fluid conduit 162 provides fluid to nozzles 166a, 166b. The nozzles 166a, 166b are arranged on the front side on the side region 104b on the protective hood 100. In the embodiment shown, two opposing nozzles 166a, 166b are provided. There may also be more than two nozzles.

A branch 168, from which a first liquid line 170a leads to the nozzle 166a, and from which a second liquid line 170b leads to the nozzle 166b, sits on the liquid line 162. The liquid conduits 170a and 170b are fixed to the upper portion 104a of the protective hood 100. The liquid line 162, the branch 168, and optionally the liquid lines 170a, 170b are arranged and configured such that, when rotation of the protective hood 100 is provided on the bearing device 101 (for example, by an angle of ± 35 °), the liquid supply to the nozzles 166a, 166b is ensured in each permitted rotational position. In particular, the second liquid line 162 and optionally the first liquid line 170a and the second liquid line 170b are flexible.

The nozzles 166a, 166b each have a nozzle opening 172 which is directed downwards (away from the upper area 104a of the protective hood 100).

The nozzle openings 172 are in particular designed such that a corresponding liquid jet 174, which emerges from them, a relatively small Has width and, for example, triangular. In particular, it is ensured that the liquid jet 174 does not directly spray the tool 98, but directly reaches the working surface on which the tool 98 is placed.

The cleaning / grinding machine according to the invention works as follows:

The handle 122 forms a first handle. The handle 34 forms a second handle. The handle 60 or 64 forms a third handle. It is in principle possible that, for example, the second handle 34 is not present.

An operator may manipulate the cleaning / grinding machine 10 with these handles. Depending on the machining process, he can choose the optimized grip position. It may further adjust the handle 34 relative to the first member 22 and the handle 122 on the first member 22 adapted to the particular machining operation. By this adjustability via a shift in the direction 30 and the direction 122, the relative position of the handles 34 and 120 can be adjusted to the tool head 16.

Optionally, the operator may supply liquid to the tool 98 from the liquid container 130 or the external liquid line 156 by connecting the external liquid line 156 or the liquid line 144 to the coupling 152. Depending on the machining process and the local conditions, the liquid supply to the tool 98 can be selected.

By adjusting the speed of the drive motor 42, the operator can set the necessary speed for the rotation of the tool 98 about the rotation axis 96. For example, in a cleaning operation, a low speed of the order of 1000 rpm and for a grinding operation a higher speed of the order of 3000 rpm are selected.

For a surface treatment (cleaning or grinding), the tool 98 is placed on the processing surface. Depending on whether the processing surface is a bottom surface, wall surface or ceiling surface, the operator positions himself. Due to the pivotable mounting of the tool head 16 a simplified machining is possible.

Liquid is sprayed onto the processing surface via nozzles 166a, 166b.

By means of the flexible suction line 142 and the liquid container 130 it is ensured that, when liquid is supplied from the liquid container 130, suction of liquid in any position of the cleaning / grinding machine is possible.

By providing the hand pump 138 can be made possible in a simple manner suction. An operator removes the liquid container 130, fills it with liquid (especially water) and fixes it again to the liquid container holder 132. About the manual pump 138, a corresponding pressure is generated, which is sufficient to promote the Liquid to the tool 98 is. Before processing, a switch or valve is then opened, which allows the liquid flow to the liquid line 144.

It can be provided that one or more connection elements 164 for a tether are arranged on the holding device. For example, such a connection element is arranged on the rod 62. A tether can be suspended from the connecting element 164. Thereby, the cleaning / grinding machine 10 can be supported in the region of this connection element 164 in order to facilitate the processing of a processing surface for the operator.

It can be provided 164 also at other locations of the holding device 12 connecting elements.

The second handle 34 is optional. The designation of the handle 122 as the first handle, the handle 60 or 64 as a second handle and the handle 34 as a third handle does not mean that three handles must be present. For example, it is possible to have only one handgrip or two handles.

It can be provided that the motor housing 44 is detachably arranged on the holding device 12. In principle, it may be provided that a machining tool can be fixed directly on the removed motor housing 44. As a result, the drive motor 42 can be used directly for machining operations. For example, this allows grinding at corners or edges.

Another embodiment of a hand-held cleaning / grinding machine according to the invention, which in FIG. 5 is shown and designated 176, is basically the same design as the cleaning / grinding machine 10. For the same elements like reference numerals are used. On the holding device 12 of the cleaning / grinding machine 176, a drive motor 178 is held, which is operable on battery power. For this purpose, a battery 180 can be coupled to the drive motor 178.

On the first element 22 of the holding device 12, a receptacle 182 in the form of a receiving box in the region of the handle 122 is arranged. The receptacle 182 has an internal receiving space 184, which is bounded by opposing walls 186a, 186b and an end wall 186c. Towards an upper side, the receiving space 184 is delimited by a liquid container 188, which corresponds to the liquid container 130. The end wall 186c has a seating area 190 for the liquid container 188.

From the liquid container 188, a second liquid line 192 leads to the coupling 152 on the holding device 12.

In the embodiment shown, a double clutch 194 with three connection points, namely a connection point for the coupling 152, a further connection point for the second fluid line 192 and a connection point 196 for an "external" fluid container 198, which is a user by means of a tether, is seated on the coupling 152 200 can carry on the back. A fluid line 202 is fluidly effective with the Liquid container 198 connected and connected at the junction 196 to the dual clutch 194.

The second fluid line 192 may be displaced into the receiving space 184 when it is not connected to the clutch 152. For this purpose, an opening 204 is arranged on the end wall 186c, through which the second liquid line 192 is performed. This can be moved via the opening 204 in the receiving space 184. Optionally, a coupling arranged on the second liquid line 192 can also be displaced into the receiving space 184. In the receiving space 184, the second liquid line 192 can preferably be stowed completely and optionally a coupling which is on the second liquid line 192.

On the holding device 12 between the drive motor 178 and the handle 122, a fixing device 206 for a tether for holding the cleaning / grinding machine 176 is arranged. This fixing device 206 comprises in particular a holding lug 208 for latching the tether.

At a lower end of the first element 22, a handle 210 is arranged, which is designed as a ball handle and at least approximately has a spherical shape. It can be grasped by hand from almost all directions, so that a simple operation of the cleaning / grinding machine 176 is possible.

Otherwise, the cleaning / grinding machine 176 functions as described above.

Claims (57)

A hand-held cleaning / grinding machine comprising a holding device (12) for holding the cleaning / grinding machine, a drive motor (42), a tool head (16) for one or more cleaning tools and / or grinding tools, which one via the drive motor (42) driven Tool drive shaft (58), and a transmission device (48) for transmitting torque from the drive motor (42) to the tool drive shaft (58),
characterized in that at least one coupling (152) for connecting at least one first liquid line (144, 156) is arranged on the holding device (12) and in that at least one second liquid line (162) from the at least one coupling (152) to the tool head (15). 16) leads. Hand-held cleaning / grinding machine according to claim 1, characterized in that on the holding device (12) a liquid container (130) is arranged. Hand-held cleaning / grinding machine according to claim 2, characterized in that to the liquid container (130) a liquid line (144) is connected, which is connectable to the at least one coupling (152). Hand-held cleaning / grinding machine according to claim 3, characterized in that through the at least one coupling (152) optionally an external hose (156) and / or the liquid line (144) connected to the liquid container (130) is connected to the second liquid line (162). fluideffective connectable. Hand-held cleaning / grinding machine according to one of claims 2 to 4, characterized in that the liquid container (130) is designed as a pressure vessel. Hand-held cleaning / grinding machine according to one of claims 2 to 5, characterized in that on the liquid container (130) a pump (138) is arranged. Hand-held cleaning / grinding machine according to claim 6, characterized in that the pump is a hand pump (138). Hand-held cleaning / grinding machine according to one of claims 2 to 7, characterized in that the liquid container (130) or a part of the liquid container (130) is removably fixed to the holding device (12). Hand-held cleaning / grinding machine according to one of claims 2 to 8, characterized in that in the liquid container (130) a suction line (142) is arranged, which is fluidly connected to the fluid to the liquid container (130) connected to the liquid line (144). Hand-held cleaning / grinding machine according to claim 9, characterized in that the suction line (142) is flexible. Hand-held cleaning / grinding machine according to claim 9 or 10,
characterized in that a weight element (146) is arranged on or in the vicinity of an inlet (148) of the suction line (142). Hand-held cleaning / grinding machine according to one of the preceding claims, characterized in that a handle (122) is arranged on the holding device (12) between an end adjacent to the tool head (16) and an end facing away from the tool head (16). Hand-held cleaning / grinding machine according to claim 12, characterized in that the handle (122) is designed as a bow-shaped handle. Hand-held cleaning / grinding machine according to claim 12 or 13,
characterized in that a position of the handle (122) on the holding device (12) is variably adjustable. Hand-held cleaning / grinding machine according to one of claims 12 to 14, characterized in that the handle (122) is arranged on a fixing device (116). Hand-held cleaning / grinding machine according to claim 15, characterized in that the fixing device (116) is fixable slidably positionable on the holding device (12). Hand-held cleaning / grinding machine according to claim 16, characterized in that a distance of the handle (122) to the at least one clutch (152) is adjustable. Hand-held cleaning / grinding machine according to claim 16 or 17,
characterized in that a distance of the handle (122) to a fixing device (74) of the tool head (16) on the holding device (12) is adjustable. Hand-held cleaning / grinding machine according to one of claims 16 to 18, characterized in that a liquid container (130) on the fixing means (116) of the handle (122) is arranged. Hand-held cleaning / grinding machine according to claim 19, characterized in that the liquid container (130) with the fixing device (116) of the handle (122) is detectably slidably positioned on the holding device (12). Hand-held cleaning / grinding machine according to claim 19 or 20,
characterized in that a distance of the liquid container (130) to the at least one coupling (152) is variable. Hand-held cleaning / grinding machine according to one of claims 15 to 21, characterized in that the fixing device (116) of the handle (122) comprises a clamping holder (118) for fixing to the holding device (12). Hand-held cleaning / grinding machine according to one of claims 12 to 22, characterized in that the handle (122) between the drive motor (42) and the at least one clutch (152) is positioned. A handheld cleaning / grinding machine according to any one of the preceding claims, characterized by a handle (34) disposed at or near one end (18) of the holding means (12) adjacent the tool head (16). Hand-held cleaning / grinding machine according to claim 24, characterized in that the handle as a bow-shaped handle (34) or ball handle (210) is formed. Hand-held cleaning / grinding machine according to claim 24 or 25,
characterized in that a distance of the handle (34) to at least one clutch (152) is adjustable. Hand-held cleaning / grinding machine according to one of claims 24 to 26, characterized in that a distance of the handle (34) relative to a fixing device (74) of the tool head (16) on the holding device (12) is adjustable. Hand-held cleaning / grinding machine according to one of claims 24 to 27, characterized in that the at least one coupling (152) between the handle (34) and another handle (122) which is arranged on the holding device (12) is positioned , Hand-held cleaning / grinding machine according to one of claims 24 to 28, characterized in that the handle (34) on a second element (28) of the holding device (12) is held, which in a receiving space (26) of a first element (22). the holding device (12) is at least partially immersed. Hand-held cleaning / grinding machine according to claim 29, characterized in that the second element is a rod (28). Hand-held cleaning / grinding machine according to claim 29 or 30,
characterized in that the first element (22) is a tube. Hand-held cleaning / grinding machine according to one of claims 29 to 31, characterized in that the at least one coupling (152) on the first element (22) is arranged. Hand-held cleaning / grinding machine according to one of the preceding claims, characterized by a handle (60; 64) which is arranged on or in the vicinity of an end of the cleaning / grinding machine facing away from the tool head (16). Hand-held cleaning / grinding machine according to claim 33, characterized in that the handle (64) has a palm (66). Hand-held cleaning / grinding machine according to claim 33 or 34,
characterized in that the handle (64) is designed as a cylindrical handle. Hand-held cleaning / grinding machine according to one of claims 33 to 35, characterized in that the handle (64) projects beyond the drive motor (42). Hand-held cleaning / grinding machine according to claim 33, characterized in that the handle (60) on a motor housing (44) of the drive motor (42) is formed. Hand-held cleaning / grinding machine according to one of claims 33 to 37, characterized in that the handle (64) is removable. Hand-held cleaning / grinding machine according to one of the preceding claims, characterized in that the drive motor (42) on the holding device (12) is arranged. Hand-held cleaning / grinding machine according to claim 39, characterized in that the drive motor (42) is removable. Hand-held cleaning / grinding machine according to claim 39 or 40,
characterized in that the drive motor (42) on or in the vicinity of the tool head (16) facing away from the end of the holding device (12) is arranged. Hand-held cleaning / grinding machine according to one of the preceding claims, characterized in that the drive motor (42) has an adjustable speed. Hand-held cleaning / grinding machine according to claim 42, characterized in that the drive motor (42) has at least a first speed gear for cleaning operations and a second speed gear for grinding operations. Hand-held cleaning / grinding machine according to claim 43, characterized in that a tool speed for the first speed gear is below 2000 U / min. Hand-held cleaning / grinding machine according to claim 43, characterized in that a tool speed for the second speed gear is above 2000 U / min. Hand-held cleaning / grinding machine according to one of the preceding claims, characterized in that the tool head (16) with a fixing device (50) about at least one pivot axis (92) is pivotally mounted on the holding device (12). Hand-held cleaning / grinding machine according to claim 46, characterized in that the at least one pivot axis (92) is oriented transversely to a longitudinal direction (24) of the holding device (12). Hand-held cleaning / grinding machine according to claim 46 or 47,
characterized in that the fixing device (50) for the tool head (16) comprises a holding fork (76). Hand-held cleaning / grinding machine according to one of claims 46 to 48, characterized in that the fixing device (50) for the tool head (16) comprises a sheet element (70) which is positioned on the holding device (12). Hand-held cleaning / grinding machine according to claim 49, characterized in that the second liquid line (162) is at least partially guided in the sheet member (70). Hand-held cleaning / grinding machine according to one of the preceding claims, characterized in that the tool drive shaft (58) with a flexible drive shaft (114) is connected, which is driven by the drive motor (42). Hand-held cleaning / grinding machine according to one of the preceding claims, characterized in that on the holding device (12) one or more connection elements (164) are arranged for a tether device. Hand-held cleaning / grinding machine according to one of the preceding claims, characterized in that a minimum length of the holding device (12) is in the range between 0.50 m and 2.5 m. Hand-held cleaning / grinding machine according to one of the preceding claims, characterized in that on the holding device (12) has a receptacle (182) with a receiving space (184) for the second liquid line (162), if not connected to the coupling (152) is, is arranged. Hand-held cleaning / grinding machine according to claim 54, characterized in that a liquid container (188) on the receptacle (182) is arranged. Hand-held cleaning / grinding machine according to one of the preceding claims, characterized by a liquid container (198), which is portable by an operator and to the coupling (152) fluideffekts connectable. Hand-held cleaning / grinding machine according to one of the preceding claims, characterized in that a fixing device (206) for a holding belt or tether is arranged on the holding device (12).

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