WO2019206511A1

WO2019206511A1 - Spraying device

Info

Publication number: WO2019206511A1
Application number: PCT/EP2019/056341
Authority: WO
Inventors: Georg SCHLÖSER; Steve BRAUNS; Bernhard Beck; Andreas KACHELRIESS; Andreas Schwarz; Simon Walter
Original assignee: Alfred Kärcher SE & Co. KG
Priority date: 2018-04-25
Filing date: 2019-03-13
Publication date: 2019-10-31
Also published as: WO2019206512A1; EP3784411A1; CN112004608B; CN112004608A; DE102018109980A1; EP3784411B1

Abstract

The invention relates to a spraying device for spraying a liquid, in particular in the low-pressure range, said spraying device (10; 90; 110; 40; 160; 170; 190; 220) being designed to be manually holdable and manually operable and comprising: a spray head (16) and a handle element (14); a fluid line (26; 92; 172) having an inlet (34) for supplying the liquid and an outlet (40) positioned on the spray head for spraying the liquid; an actuating element (30) for acting on a valve element (28) via which the flow of liquid through the fluid line (26; 92; 172) can be optionally released or blocked; a preferably electric drive device (52) having a drive motor (54) which is coupled to the fluid line (26; 92; 172); wherein the fluid line (26; 92; 172) can be moved continuously in a defined manner via the drive device (52) in order to change the position and/or the orientation of the outlet (40).

Description

SPRUH DEVICE

The present invention relates to a spraying device for spraying a liquid, in particular in the low-pressure region, which spraying device is designed to be hand-held and manually operable, comprising a spray head and a gripping element, a fluid line with an inlet for supplying the liquid and an outlet for spraying the liquid, an actuating element for acting on a valve member via which the flow of fluid through the fluid conduit is selectively releasable or lockable.

Such a spraying device, which is operated in particular at a pressure range of the liquid to be sprayed of approximately 0.5 bar to a maximum of 25 bar (in the present case regarded as a low-pressure region, typically approximately 1 bar to 8 bar), can be used in particular Home and garden area are used, wherein the liquid is water. Accordingly, the spray device is particularly hand-held and manually operated and is designed for example as a spray gun. A user can grasp the spray device on the handle element and control the liquid dispensing from the spray head by means of the actuating element. The spraying device can be used, for example, for cleaning purposes, where in particular loose, not too persistent impurities are flushed away with the liquid jet. Also conceivable is the use of the spray device for irrigation purposes.

In DE 201 03 259 Ul a hand nozzle for ejecting liquid is described, which is used for example in the low pressure range. On the output side, the hand nozzle includes a rotor nozzle unit which is intended to rotate on a conical surface when exposed to liquid. However, the hand nozzle proves to be less reliable when used in the low pressure range, since the fluid pressure is too low to start or maintain the movement of the rotor. Thus, in practice, it can be seen that an assurance Permeable cleaning effect with rotor nozzles is only possible in the high pressure range, from approx. 20 bar upwards.

WO 2007/131533 A1 describes a flexible, oscillating nozzle for ejecting a fluid. On the output side, the nozzle has a flexible hose line fixed at one end, whereas the other end can move freely. When exposed to liquid, the free end moves in a random manner. This makes it considerably more difficult to achieve a uniform work result.

The same applies to a spray device described in DE 10 2007 028 244 A1. At the free end of a pendulum suspended flexible hose a deflector is arranged, depending on the position of the liquid jet is discharged in different directions. During the pendulum movement, the deflection element strikes against a working housing, whereby the position of the deflection element and thus the direction of the discharged liquid jet are changed. As with the

WO 2007/131533 Al, however, the direction of the liquid jet is also subject to chance in the spray device of DE 10 2007 028 244 A1.

In US 2015/0273489 Al a spray device is described in which incoming liquid can flow through a rotor with a curved channel. On the output side, the channel opens into a nozzle mounted on a bearing shell and movable along a conical jacket. The spray device is pressure actuatable, whereby the movement of the nozzle is initiated in dependence on the shape of the channel. Apart from a complex construction, the sprayer also proves to be of limited use, because the movement of the nozzle, similar to the

DE 201 03 259 Ul, is set in motion only at a relatively high pressure. WO 00/07734 A2 describes a nozzle for discharging a liquid. The nozzle has a resilient central region, whereby the nozzle can be bent without kinking.

A spray device in the form of a spray gun, with which different spray patterns can be generated, is described in WO 2016/165738 A1. The spraying device comprises a spot jet nozzle, a flat jet nozzle, a mist nozzle and a rain shower, which can optionally be brought into fluid communication with a supply line for the liquid.

A material dispensing device for high-pressure applications, which is suitable for the dispensing of liquids such as adhesives and sealants, is described in DE 102 36 266 A1.

Object of the present invention is to provide a spray device of the type mentioned, which is more versatile.

This object is achieved in accordance with a generic spray device according to the invention in that the spray device comprises a preferably electric drive device with a drive motor which is coupled to the fluid line, wherein the fluid line via the drive means for changing the position and / or the orientation of the outlet continuously defined is movable.

In the spray device according to the invention, there is the advantage that the position of the outlet and / or the orientation of the outlet can be changed in a defined manner. In this case, it is possible, in particular, to change the position of the outlet by lateral movement, which, for example, results in a parallel offset of the discharged liquid jet. Additionally or alternatively, preferably the possibility is given to change the outlet in its orientation so that the direction of the discharged liquid jet is tilted. For changing the position and / or orientation of the outlet, the invention comprises proper spray device, a preferably electric drive device. The drive device comprises a drive motor which is directly or indirectly coupled to the fluid line. This offers the advantage that it is possible to act continuously on the fluid line in order to allow a permanent movement and / or orientation change of the outlet in a defined manner. The resulting movement of the discharged liquid jet is due to the use of the drive means independent of external conditions, such as the pressure of the incoming liquid. In contrast to spray devices, as disclosed in the publications DE 201 03 259 U1 and US 2015/0273489 A1 cited at the outset, the reliable function of the spray device can also be ensured in the low-pressure range, in which a continuous and defined pressure-supported movement the outlet is not possible.

The movement of the liquid jet offers, for example, the advantage that the cleaning performance or the irrigation performance can be increased by increasing the area performance. This goes hand in hand with a more user-friendly handling. Without the user needing to move the spray device, the direction and / or the position of the discharged liquid jet can be changed by means of the drive device. Therefore, the spray device also proves to be user-friendly.

For a user-friendly handling, it is also advantageous that the handle element, the actuating element is arranged, which allows the user to selectively release the fluid line for dispensing liquid with the spray device or lock. The sprayer thus has a higher versatility. The valve element can be arranged on or in the fluid line or on or in a fluid line connected to the fluid line.

Conveniently, the actuating element is arranged on the handle element and in this way easily accessible by the user. It goes without saying that, in an advantageous embodiment, more than just one fluid line can be provided. Accordingly, the spray device according to the invention can have at least one fluid line. In a corresponding manner, at least one inlet and at least one outlet can be provided. Alternatively or additionally, at least one drive device is provided. In an advantageous embodiment, it can be provided that a drive device is coupled to more than one fluid line. Alternatively, each fluid line can be assigned an independent drive device.

In an advantageous embodiment of the spray device according to the invention, the drive device is mechanically coupled to the fluid line. In this way, it is possible to act mechanically continuously on the fluid line via the drive device.

Alternatively or additionally, it may be provided that the drive device is magnetically coupled to the fluid line.

It is favorable if the fluid line at the outlet comprises or forms a nozzle, or if the outlet is formed by a nozzle. By means of the nozzle, a defined liquid jet can be provided, which may in particular be a spot jet.

It can be provided that an exit direction of the liquid through the nozzle runs along an axis of the fluid line, a nozzle axis can accordingly be aligned with an axis of the fluid line, for example an axis at the inlet of the fluid line.

Alternatively it can be provided that an outlet direction of the liquid is aligned through the nozzle obliquely to an axis of the fluid line. A nozzle axis can accordingly enclose an angle with the axis of the fluid line. The angle is preferably about 0.5 ° to 10 °. Preferably, the outlet is designed to emit a spot jet, in particular through the aforementioned nozzle. In the present case, a spot jet is understood as meaning a liquid jet which is spatially cavitated at the outlet, in particular with a substantially circular cross section, and whose expansion over the usual working distance of the spray device in its intended use is relatively low. A spot beam of high beam quality can also be provided in the low pressure range. By changing the position and / or orientation of the outlet, the spot beam can be moved to increase area coverage.

Overall, it can be provided to move the outlet in various ways. For example, the outlet is displaceable in at least one spatial direction, tiltable in at least one spatial direction, pivotable and / or rotatable. The outlet may be rotated and / or displaced, for example, in a tilted state relative to a reference axis, for example an axis of the fluid line.

In an advantageous embodiment of the spray device according to the invention it can be provided that the outlet is movable so that a jet of the spray device describes a conical surface (of a widening cone). In this way, the function of a rotor nozzle in the low pressure region can be modeled using the drive device. In contrast to rotor nozzles used in the high-pressure area, for example, the movement of the outlet is not started and maintained by the fluid pressure, but by means of the drive motor. There is no pressure loss due to the movement of the outlet, so that the beam quality can be permanently maintained even with a moving outlet.

The opening angle of the cone is advantageously, for example, approximately 1 ° to 20 °. In a corresponding manner, in an advantageous embodiment of the spraying device according to the invention, it is favorable if the outlet is movable so that a jet of the spraying device can be dispensed in one plane. This makes it possible to simulate a flat jet with the spray device. In this case, the plane is oriented, for example, horizontally and perpendicular to a direction of gravity, assuming a proper use of the spraying device, in which the gripping element is arranged at the bottom with respect to the gravitational force direction.

It is advantageous if the spraying device comprises a holding element, on which the outlet, in particular the nozzle, rests or is fixed. By means of the holding element, the outlet, in particular the nozzle, can be given a defined and possibly variable position. The holding element may be movable for moving the outlet in particular relative to a housing of the spraying device by means of the drive device. Favorably, a guide is provided for the movement of the retaining element. Alternatively, the retaining element, for example on a housing of the spraying device, can be immovably fixed, wherein the outlet can move on the retaining element, in particular for changing the orientation of the discharged liquid jet.

The holding element can be fixed to the housing, for example, or can be formed integrally therewith.

For example, the holding element comprises or forms a bearing shell on which the outlet rolls. Accordingly, the outlet may be "fixed" to the bearing shell, but due to the possibility of rolling it, it may be directionally variable.

Alternatively, the fluid conduit can be engaged with a movably formed holding element, for example with the outlet and in particular with the nozzle, in order to change its position and / or orientation. In another advantageous embodiment of the spraying device according to the invention, provision can be made for the outlet to be freely movable without fixing by means of a holding element. The outlet at the free end of the fluid conduit may be moved for position and / or orientation change as a result of its movement.

Conveniently, the drive device is coupled to the outlet, in particular the nozzle, and engages at or near the outlet to the fluid line. For example, the drive device engages the outlet to move it relative to a housing of the spray device, and / or to change its orientation. This gives, for example, the possibility of outputting the jet of the spraying device on a conical surface or in a plane, as explained above.

Alternatively or additionally, it can be provided that the drive device is coupled to the fluid line at a distance from the outlet, upstream of the latter in the inflow direction of the liquid to be sprayed. Such a coupling can be provided both in one embodiment of the spraying device, in which the outlet, in particular the nozzle, abuts or is fixed to a holding element, as well as in an embodiment in which the outlet without fixation by means of a Holding element and is free to move.

Conveniently, the fluid line is held stationary at the inlet to the spray device.

At the inlet, a connection element for connecting an external supply line for the liquid can be arranged. The connection element is for example a coupling element of a plug-in coupling, the external supply line a hose line with a corresponding coupling element.

Alternatively, it can be provided that the fluid line with the inlet is tightly connected to the outlet of a further fluid line of the spray device. is closed. The further fluid line, for example, in turn has the above-mentioned connection element.

In a preferred embodiment, it is favorable if the spraying device is free from moving sealing points on the fluid line, in particular at its inlet. Therefore, it is advantageous if the inlet is arranged stationary and immovable on the spray device.

It proves to be favorable if the fluid line is at least partially configured as a flexible hose line. In this way, it is structurally simple to move the fluid line by means of the drive device. The energy required to deform the flexible tubing to move the outlet is relatively low. The spray device thus has a long service life during battery operation. The fluid line can be configured overall as a flexible hose line.

It is favorable if the fluid line is designed to be at least partially rigid. As a result, for example, the pressure resistance of the fluid line can be increased. It may be provided that the fluid line is designed to be completely rigid.

In an advantageous embodiment of the spraying device, the fluid idleitung comprises two preferably rigid fluid line sections, which are connected to each other by means of a hinge member movable and tilted relative to each other, wherein the drive means coupled to one of the Fluidleitungsab- sections. The hinge element makes it easier to move the fluid line sections relative to each other. The hinge element is for example made of an elastically deformable material, which is formed as a bellows or cuff, wherein the fluid line sections engage from opposite sides in the hinge element.

According to the invention, the drive device is preferably an electric drive device and has the drive motor. This allows a structurally simple design of the spraying device at the same time reliable function of the same. The electric drive device also allows a compact design of the spray device.

However, the drive device can also be designed in different ways. The invention is reserved if, instead of the electric drive device, a different kind of drive device with drive motor is used. For example, it is a pneumatic drive device. Also conceivable is a hydraulic drive device. For example, this comprises a hydraulic motor which, for example, has a turbine wheel which can be driven by the liquid to be sprayed and which is coupled to the fluid conduit.

The drive motor may preferably be a low-voltage motor.

Vibrations of the drive motor are advantageously at least attenuated transmitted to a housing of the spray device, for example to a handle element. The user receives in this way a haptic feedback on the operation of the drive device.

The spraying device advantageously comprises at least one preferably rechargeable battery for supplying energy to the drive device. The at least one battery, in particular for the power supply of the low-voltage motor, can be carried in the spray device. The use of a cable for power supply is not required. The handling and the working radius of the sprayer are increased in this way.

It is favorable if the at least one battery can be charged in the spray device, which for this purpose may preferably have electrical connection elements for connecting a charging device. Alternatively or additionally, it may be provided that the at least one battery of the Spray device can be removed, preferably manually and without tools.

The at least one battery is accommodated, for example, in a housing of the spray device. For example, it is provided that the at least one battery is accommodated in the spray head. Advantageously, it is possible to remove the battery from the housing via a removal opening which is arranged at its side opposite the outlet. In this case, the at least one battery is arranged, for example, in a common receiving space with the drive motor, which is sealed relative to a receiving space substantially fluid-tight, in which the fluid line is positioned and optionally components of the drive device.

The at least one battery and the drive motor are advantageously positioned one behind the other in the spray head, based on the longitudinal direction of the spray head. The fluid line is advantageously arranged below the drive motor, based on the intended use of the spray device.

In a preferred embodiment of the spray device, it can be provided that the at least one battery is received in the grip element.

In an advantageous embodiment of the spray device it can be provided that the drive motor is designed for operation with mains voltage (for example 230 V or 110 V) and that the spray device comprises a power cable for connection to a power supply network.

A relatively short design of the spray device is preferably achieved in that the drive motor is received laterally next to the fluid line in a housing of the spray device. In the present case, "side-by-side" also includes, in particular, the case in which the drive motor is arranged in the intended use of the spraying device above the fluid line. For example, the drive motor is arranged offset with a drive shaft to a central longitudinal plane of the spray device, wherein the fluid line extends advantageously in the central longitudinal plane. It turns out in practice that the spray device, in particular the spray head, can be imparted in this way a compact design.

A relatively slender, rather elongated design of the spray device is preferably achieved in that the drive motor is axially upstream of the fluid line, based on the flow direction of the liquid to be sprayed.

It is advantageous if the drive device can be optionally switched on and off by a user and if the spray device comprises a triggering element for activating the drive device. This allows the user to activate and deactivate the drive device when needed. The sprayer thus has a high versatility.

It is advantageous if the abovementioned triggering element can be actuated independently of the actuating element. This increases the versatility of the spray device.

It may be provided for improved handling that the actuating element forms the triggering element. For example, upon actuation of the actuating element, first the fluid line is released for dispensing liquid, for example by the actuating element being pressed or pulled only lightly. Upon further actuation, for example, more pressing or pulling, the actuator acts as a trigger element and the drive means is activated.

Conversely, it can be provided in a similar manner that both the fluid line is released upon actuation of the actuating element and the drive device is activated, for example, during easy operation. at stronger actuation, the fluid line remains released, but the drive device is deactivated.

Accordingly, it can be provided that the actuating element can be actuated in two stages, with the actuating element acting as a triggering element in at least one stage. Upon actuation, the flow of the liquid can first be released and the drive device can be activated upon further actuation. "Two-stage" does not require the user to be able to perceive switching levels haptically on the actuating element.

The drive device, in particular the drive motor, is accommodated, for example, in a spray head of the spray device.

An advantageous embodiment of the spray device according to the invention comprises a spray gun or a spray lance (for example, a Gießsta- bes) or is designed as such.

For example, in the case of a spray gun, an angle between the handle member and the spray head is about 90 ° to 160 °, preferably about 100 ° to 140 °, more preferably about 110 ° to 120 °.

In one advantageous embodiment, the spraying device can be embodied in a straight line, for example in the form of a bar.

It can be provided that the spray head protrudes on both sides beyond the grip element in the longitudinal direction of the spray device. For example, an axis of the handle member passes through the spray head, with the at least one battery and the drive motor positioned on opposite sides of the axle. Alternatively it can be provided that the spray head is arranged in an angular position relative to the handle element and from this in the longitudinal direction of the spray device only in one direction abstands. In an advantageous implementation of the spray device, it is favorable, in particular for the mechanical coupling of the drive device to the fluid line, if the drive device comprises an eccentric body which can be driven in rotation about a rotation axis. The eccentric body defines in particular an axis of rotation or has an axis of rotation about which it can be driven to rotate directly or indirectly by the drive device. Eccentrically to the axis of rotation of the eccentric body can in particular directly or indirectly couple with the fluid line.

A guide is advantageously provided for the rotation of the eccentric body relative to a housing of the spray device. The guide ensures a defined rotation of the eccentric body and thus the defined movement of the outlet.

It can be provided that the eccentric body is designed in one piece. Alternatively, the eccentric body may comprise two or more interconnected and cooperating elements.

It is advantageous if the eccentric body comprises or forms a drive wheel with one or / and a receptacle arranged eccentrically with respect to the axis of rotation. The fluid line can intervene, for example, in the receptacle designed as an engagement opening. Alternatively or additionally, the fluid line can pass through the receptacle formed as a passage opening.

It may be provided that the drive wheel contacts the fluid conduit to continuously and definedly move the outlet according to the invention. Alternatively, it can be provided that the movement of the outlet is effected by a further element of the drive device which is in operative connection with the drive wheel.

It may be provided that the fluid line engages in the receptacle with a side facing away from the outlet, and thereby at an outlet remote from the outlet. turned side is moved. In the latter case, for example, the receptacle can be designed like a blind hole.

It is favorable if the eccentric body comprises or forms a covering element which closes an opening of a housing of the spraying device and has an outlet opening for the liquid jet emitted by the outlet. The liquid jet is discharged through the cover element. A separate cover on the housing can be saved. This simplifies the structural design of the spray device.

Preferably, the cover is rotatably connected to the drive wheel. The cover element can thus be set in rotation about the axis of rotation. For example, the outlet engages in an engagement opening of the cover element.

Conveniently, the cover member forms the abovementioned holding element, or vice versa. In this case, provision is made in particular for the fluid line to rest on the cover element, in particular with the outlet and in particular the nozzle mentioned above. During rotation of the cover element, a movement under position and orientation change can be achieved with the outlet.

It is advantageous if the drive wheel and / or the cover element is designed to be rotatable relative to the fluid line, wherein the fluid line in particular directly or indirectly contacts an edge of a receptacle of the drive wheel or the cover element. A rotation of the drive wheel or of the cover element makes it possible in this way to move the fluid line, whereby it is deflected, but not rotated. This facilitates, for example, the connection of the fluid line at the inlet to a further fluid line without moving sealing points. If the fluid line is designed as a flexible hose line or has a joint element as mentioned above, the fluid line can be moved constructively in a simple and reliable manner. The fluid line may for example lie directly on the edge of the receptacle. Age- The fluid line can, for example, indirectly contact the edge of the receptacle via a surrounding sleeve.

In a preferred embodiment, an intermediate element arranged on the eccentric body between the drive wheel and the cover element is provided, via which the eccentric body is mounted axially and / or radially on a housing of the spraying device. For example, the intermediate element forms a guide or a bearing for the eccentric body on the housing. It can be provided that are arranged on the intermediate element and the housing with each other in engagement ribs and grooves. The intermediate element is, for example, annular.

Elements of the eccentric body are latched together, for example. For example, the drive wheel is connected by latching via latching hooks with the intermediate element and / or the cover. The cover element is connected, for example, latching via latching hooks with the drive wheel and / or the intermediate element.

In a preferred embodiment, the drive wheel is axially slidable on both sides, for example in the manner of a flange, on support elements which are fixed to a housing of the spray device. In this way, the drive wheel is immovably fixed in the housing and can rotate to deflect the fluid line.

The drive wheel is designed, for example, as a toothed wheel, which can be driven to rotate by means of a toothed wheel fixed to a drive shaft of the drive motor.

In another embodiment, the drive wheel may be fixed to a drive shaft of the drive motor.

In an advantageous embodiment of the spraying device, the eccentric body advantageously comprises an eccentrically arranged eccentric to the axis of rotation Center member which is in engagement with a pivotally mounted on the spray device coupling element, in which the fluid line is held directly or indirectly. The eccentric body, designed, for example, as an eccentric wheel, comprises the eccentric member, for example a projection. The eccentric member engages with the pivotally mounted coupling element and engages, for example, in a receptacle. During a rotation of the eccentric body, the coupling element can be oscillated back and forth. The movement can be transmitted indirectly or directly to the fluid line. The coupling element is pivotably mounted, for example, in a housing of the spray device.

Conveniently, the coupling element is connected to a push element displaceably mounted on the spraying device, wherein preferably a guide for the push element is provided in a housing of the spraying device. The pivoting movement of the coupling element can be transferred to the pusher in this way. This makes it possible to shift the fluid line, in particular its outlet, back and forth via the movement of the push element.

The guide may for example be fixed to the housing or formed integrally therewith.

The coupling element and / or the push element preferably comprise an opening, wherein the fluid line engages in the opening or penetrates the opening. For example, the fluid line engages with the outlet in the opening of the push element, so that the outlet can be displaced by means of the push element.

In an advantageous implementation of the spray device can be provided that the drive means comprises or forms a drive element, via which the fluid line is rotatable about its axis. For example, the drive element is driven by a shaft of the drive motor. The drive element can engage directly with the fluid line or indirectly. The drive element is, for example, a drive element, such as a drive belt, which couples with the drive shaft and the fluid line.

An unbalance element for providing an imbalance is preferably arranged on the fluid line, in particular at the outlet. The unbalance element leads to a change in the position and / or orientation of the outlet when the fluid line is rotated.

In an advantageous embodiment of the spray device, it can be provided that the drive device comprises or forms a vibration element which is mechanically connected to the fluid line. The fluid line can be moved as a result of vibration of the vibrating element.

It has already been mentioned at the beginning that the drive device can be magnetically coupled to the fluid line. For example, a magnetic element is fixed to the fluid line, in particular a flexible hose line. The magnetic element can cooperate with a further magnetic element, which can be moved, for example, by the drive device.

In an advantageous embodiment, for example, a drive wheel is provided on which a magnetic element is fixed and which can be rotationally driven by the drive device, for example the aforementioned drive motor. The magnetic element acts on the magnetic element fixed to the fluid line, as a result of which it can be deflected regularly, for example.

It is advantageous if the spray device at the outlet to an adjusting element summarizes that has two or more optionally for escape to the outlet can be brought spray pattern openings to form different spray patterns with the spray device. The sprayer in this way has a higher versatility. Depending on demand, it is possible to generate different spray patterns. For example, in the case of a spray image opening, a spot beam emitted by the fluid line can be left unchanged. For example, in another spray pattern opening, the liquid jet may be broken up to provide a sort of "spray". In the case of a further spray pattern opening, for example, it is possible to narrow the liquid jet and to provide a narrow spot beam with a high beam intensity.

To actuate the adjustment, it is advantageous if this is manually adjustable by a user.

It proves to be advantageous if the drive device can be activated and / or deactivated depending on a position of the adjusting element. For example, it is provided that the continuous defined movement of the fluid line according to the invention in connection with one of the spray pattern openings is desired, whereas this movement is not provided in connection with another spray image opening, is not practical or undesirable. The position of the adjusting element, for example, can be detected mechanically and the drive device can be switched off when the adjusting element assumes a position in which the movement of the fluid line is not provided, not desired or not required. It is also possible that a detection element is provided, depending on the signal of which the drive device can be activated and / or deactivated.

The following description of preferred embodiments of the invention serves in conjunction with the drawings, the detailed explanation of the invention. Show it :

FIG. 1 shows a perspective view of a spraying device according to the invention, designed as a spray gun;

Figure 2 is a simplified partial perspective view of the spray gun of Figure 1 with an open housing; FIG. 3 is a sectional view of a spray head of the spray device of FIG. 1;

Figure 4 is an enlarged view of detail A in Figure 3;

FIG. 5: a representation corresponding to FIG. 3 in a further preferred embodiment of the spray device according to the invention;

FIG. 6 shows a schematic side view of a fluid line of a spraying device according to the invention;

FIG. 7 is a perspective view of another preferred embodiment of a spraying device according to the invention;

FIG. 8 shows a simplified perspective partial representation of the spray device from FIG. 7 with the housing open;

FIG. 9 is a sectional view of a spray head of the spray device of FIG. 7;

Figure 10 is a sectional view taken along line 10-10 in Figure 9;

Figure 11 is a sectional view taken along line 11-11 in Figure 9;

FIG. 12 shows a schematic partial representation of a preferred embodiment of the spray device according to the invention, in which details of a spray head and a drive device are illustrated;

FIG. 13 shows a representation corresponding to FIG. 12 in a further preferred embodiment; FIG. 14 shows a representation corresponding to FIG. 12 in a further preferred embodiment;

FIG. 15 shows a representation corresponding to FIG. 2 in a further preferred embodiment of a spraying device according to the invention, which comprises an adjusting element for providing different spray patterns;

FIG. 16 is a view corresponding to FIG. 15, wherein the adjusting element assumes a different position compared to FIG. 15;

FIG. 17 shows a schematic representation of a fluid line with a drive device of an advantageous embodiment of the spraying device according to the invention;

FIG. 18 is a view in the direction of the arrow "18" in FIG. 17;

FIG. 19 is a perspective view of another preferred embodiment of the spray device according to the invention, designed as a spray gun;

FIG. 20 is a view corresponding to FIG. 19, wherein a housing of FIG

Sprayer is partially open;

FIG. 21 is a partial sectional view of the spray device of FIG. 19;

FIG. 22: an enlarged view of detail A in FIG. 20, partly as

Exploded view; and

FIG. 23 shows an enlarged view of detail A in FIG. 20 in a sectional view. FIG. 1 shows a perspective illustration of an advantageous embodiment of a spraying device according to the invention, which is shown overall by the reference numeral 10. The spray device 10 is designed as a spray gun 12 which is hand-held and manually operated by the user. In the present case, the spraying device 10 comprises a gripping device with a gripping element 14 which can be grasped by the user. The gripping element 12 defines an axis which is oriented at an angle to an axis defined by a spraying head 16, whereby the spraying gun 12 takes on its shape receives.

The angle between the handle member 12 and the spray head 16 is presently about 120 ° (relative to the larger of the two angles at which intersect the axes). The spray head 16 projects from the grip element 14 in only one direction.

The spray device according to the invention can be designed differently, this is not necessarily a spray gun. For example, the spray device according to the invention is designed as a casting rod. The casting rod may include a handle member and a spray head connected together by a pipe or lance.

Overall, the spray device 10 has a housing 18, which is formed by components of the grip element 14 and the spray head 16.

In the present case, the spray device 10 comprises an inlet 20, which is formed by a connection element 22, at one end of the handle element 14. The connecting element 22 is a coupling element of a plug-in coupling or threaded coupling and serves to connect a supply line, for example a hose line.

In the grip element 14, a fluid line 24 connected in flow with the inlet 20 is arranged, which extends as far as the spray head 16. In the transition of the grip element 14 to the spray head 16, the fluid line 24 is angled here, but this is not absolutely necessary. In addition, the spray device 10 in the spray head 16 has a fluid line 26, which is formed separately from the fluid line 24. This is not absolutely necessary in the context of the present invention; in the case of a spraying device according to the invention, a continuous fluid line can be provided.

In the fluid line 24, a valve element 28 is arranged, which can be acted upon by an actuating element 30 on the handle element 14. The actuation element 30 is an actuation lever which is mechanically coupled to the valve element 28. This allows a user to selectively enable or disable the fluid line 24 (and thus the fluid line 26). When the fluid line 24 is released, liquid can be sprayed by the spray device 10, whereas this is not possible with the fluid line 24 blocked.

The actuating element 30 is articulated in the spraying device 10 on a side facing away from the spray head 16 of the handle element 14.

The actuating element 30 is in the present case designed for fingering.

In another advantageous embodiment, it may be provided that a palm operation is provided, wherein the actuating element 30 is arranged on a side of the grip element 14 facing the user. Alternatively or additionally, it is conceivable that the grip element 14 can be rotated relative to the spray head 16 about an axis of the grip element 14 in order to switch between a finger operation on the one hand and a palm operation on the other. Such a spraying device is described, for example, in WO 2016/146157 A1.

The fluid line 24 and the fluid line 26 are connected to one another in a fluid-tight manner. For this purpose, an outlet 32 of the fluid line 24 is connected to an inlet 34 of the fluid line 26. By fixing the fluid line 24 to a holding element, in the present case formed by an intermediate wall 36 in the housing 18, the inlet 34 is held stationary. A moving sealing point between the fluid lines 24 and 26 can be avoided in this way.

The fluid line 26 is largely configured as a flexible hose line 38 and has an outlet 40 on a side opposite the inlet 34. At the outlet 40, the fluid line 26 comprises a nozzle 42. In the present case, the nozzle 42 is designed to form a spot jet, so that a spot beam can be emitted by the spray device 10. An axis defined by the nozzle 42 is aligned with the axis defined by the hose 38 at the outlet 40 (FIG. 4).

For fixing the outlet 40, via the nozzle 42, the fluid line 26 is associated with a holding element 44. The holding element 44 is fixed to the housing 18 and configured, for example, like a strip.

In the present case, the holding element 44 forms a bearing element 46, on which the outlet 40, in particular the nozzle 42, rests. In this case, the nozzle 42 is "stationary" in the sense that it retains its position on the bearing element 46, but can be tilted relative thereto by movement of the fluid line 26 (FIG. 4). In particular, the bearing element 46 forms a bearing shell, on which the nozzle 42 can roll off. In particular, there is the possibility that the axis of the nozzle 42 moves on a conical surface.

The bearing element 46 has a passage opening through which a jet emitted from the fluid line 26 can be dispensed. At the front, the spray head 16 comprises a cover element 48 which closes the housing 18 and which is likewise provided with an opening 50 through which the liquid jet is discharged from the spray device 10.

In the present case, the hose line 38 is dimensioned so that it is arranged with lateral play transversely to the extension direction between the outlet 32 of the fluid idleitung 24 and the bearing element 46. This facilitates the explained below movement of the hose 38 by means of the spray device 10 includes drive means 52nd

The drive device 52 is advantageously designed as an electric drive device in the spray device 10 and has a drive motor 54, which in the present case is designed as a low-voltage motor. The drive motor 54 is accommodated in the housing 18 relative to a central longitudinal plane of the spray device 10 and is positioned laterally next to the fluid line 26.

The housing 18 is advantageously subdivided into two or more receiving spaces, wherein in the present case a receiving space 56 is provided for the drive motor 54 and a receiving space 58 for the hose line 38 and further components of the drive device 52. The receiving spaces 56 and 58 become for example, separated by the intermediate wall 36.

The separation of the receiving spaces 56 and 58 from each other is advantageously fluid-tight, so that liquid which may be located in the receiving space 58 preferably can not penetrate into the receiving space 56.

To supply the drive motor 54 with electrical energy, the spraying device has a preferably rechargeable battery 60. The battery 60 is arranged, for example, in the grip element 14. It can be provided to remove the battery 60 from the housing 18 manually and in particular without tools. Alternatively or additionally, connecting elements, not shown in the drawing, can be provided in order to charge the battery 60 in the housing 18.

The drive device 52 is associated with an electrical device 62, which is coupled to the drive device 52 and the battery 60. In the present case, the electrical device 62 is likewise accommodated in the grip element 14. Further, the electrical device 62 comprises a triggering element 64, designed as a button 66, wherein a different configuration is conceivable. By actuating the button 66, which is presently arranged on a side of the grip element 14 facing the user, the user acts the electrical device 62 a. The drive motor 54 is operated as long as the button 66 is actuated. In the absence of this actuation, the drive motor 54 is de-energized and is not operated.

It can be provided that an on / off function is triggered via the button 66, wherein the drive motor 54 is set on actuation of the button 66 in motion and is turned off when the button 66 is pressed again.

In the case of the spray device 10, provision is made, in particular, for the triggering element 64 to actuate the drive device 52 to be independent of the actuation of the actuating element 30. During operation of the spray device 10, while spraying liquid therefrom with the fluid line 24 released, the user can switch on and off the drive device 52 as needed to continuously move the hose line 38 (as long as the drive device 52 is activated) and to move it around Orientation of the outlet 40 to change.

For mechanical coupling to the hose line 38 in order to move it, the drive device 52 comprises an eccentric body 68. In the present case, the eccentric body 68 is designed as a drive wheel 70, which is driven indirectly by the drive motor 54. A drive shaft 72 drives a drive wheel 74 fixed thereto, which is in engagement with the drive wheel 70. The drive wheels 70, 74 are designed here as gears.

The axis of rotation defined by the drive wheel 70, about which the drive wheel 70 rotates, is identified by the reference numeral 76 in FIG.

For supporting the drive wheel 70, the spray device 10 in the present case comprises two support elements 78. The support elements 78 each comprise a ring section 80 with a through opening and holding sections 82. The support elements 78 are each secured to the housing 18 via the holding sections 82. The ring portions 80 are axially relative to the axis of rotation 76 on opposite sides of the drive wheel 70 at. In this way, the drive wheel 70 is supported, approximately along an outer edge, on the support elements 78 like a flange. In this case, the drive wheel 70 slides along the ring sections 80 while it rotates.

A receptacle in the form of a passage opening 84 is formed in the drive wheel 70 and arranged eccentrically with respect to the axis of rotation 76. In FIG. 3, reference numeral 86 denotes an axis of the passage opening 84.

The hose line 38 extends through the ring sections 80 and through the passage opening 84, so that the hose line 38 passes through the passage opening 84 and thus the drive wheel 70.

Due to the fact that the passage opening 84 is arranged eccentrically with respect to the axis of rotation 76 and the hose line 38 has clearance in the transverse direction, a bend is formed in the hose line 38 in the region of the passage opening 84 (FIG. 3).

The axis of rotation 76 is advantageously aligned with an axis of the fluid line 24, in the region of the inlet 34, the outlet 32, and / or with an axis defined by the bearing element 46 (FIG. 4).

The drive wheel 70 is rotatable with respect to the hose line 38. In particular, the hose line 38 is not rotationally fixedly coupled to the drive wheel 70. For example, the hose line 38 slides directly or indirectly along an edge of the passage opening 84. For this purpose, the hose line 38 is surrounded by a sleeve 88 which slides along the edge of the passage opening 84 when the drive wheel 70 rotates.

When the user actuates the drive device 52 with the pushbutton 66, the drive shaft 72 rotates, causing the drive wheel 70 to rotate about the axis of rotation 76 is driven. The hose line 38 does not rotate, but due to the eccentric arrangement of the passage opening 84 is continuously moved periodically and in a defined manner as long as the drive motor 54 is in operation due to deformation. In this case, the bending of the hose 38 in the region of the passage opening 84 is positionally variable and performs a circular movement.

As a result of the movement of the hose line 38, the nozzle 42 rolls on the bearing element 46 in such a way that the nozzle axis describes a conical surface. The emitted by the spray device 10 spot beam thereby also describes a cone sheath.

In this way, the spray device 10 has a high versatility. With the point beam moved along the cone sheath, a high surface output can be achieved during operation of the spraying device 10. For example, if the spray device 10 is used for cleaning, a high cleaning performance is achieved.

If the movement of the spot beam is not required, the drive device 52 can be deactivated.

Typical speeds of the drive wheel 70 may be, for example, about 100 to 10,000 revolutions per minute.

The angle which the nozzle 42 sweeps over the bearing element 46 during its rolling movement (opening angle of the cone) can be, for example, approximately 1 ° to 20 °.

The spray device 10 is intended for the low-pressure range, for example for an operation of approximately 0.5 bar to a maximum of 25 bar (typically approximately 1 bar to 8 bar). The volume flow of discharged liquid may be, for example, about 50 liters to 3500 liters per hour. For example, a material having a hardness of approximately 15 Shore A to 55 Shore D is proven to be advantageous for the hose line 38.

Typical lengths of the tubing 38 are approximately in the centimeter range, the inner diameter may be, for example, about 0.5 to 30 mm, with a wall thickness of, for example, about 0.05 to 5 mm.

In the following, further advantageous embodiments of the spray device according to the invention will be discussed. In this case, essentially only the largest differences from the spray device 10 are explained. The above statements, made with reference to the spraying device 10, apply correspondingly to the further embodiments. Furthermore, the advantages that can be achieved with the use of the spray device 10 can also be achieved in the case of the following spray devices, so that reference can be made to the above explanations in order to avoid repetition.

For identical or equivalent features and components of the spray device 10 and the spray devices mentioned below, in particular identical reference numerals are used.

FIG. 5 shows, in a manner corresponding to FIG. 3, a partial sectional view of a spraying apparatus designated by the reference numeral 90.

Notwithstanding the spray device 10, no retaining element is provided for the outlet 40 of the fluid line 26. Instead, the spray device 90 is free of a holding element, and the end of the outlet 40, in particular the nozzle 42, is freely movable.

During a movement of the hose line 38 by means of the drive device 52, the axis of the nozzle 42, and thus the emitted point jet, describes a conical surface. The opening angle of the conical shell can, for example be adapted by the extent of the deflection by the drive wheel 70 and / or the length of over the drive wheel 70 projecting portion of the hose line 38, which includes the outlet 40.

FIG. 6 shows a fluid line, designated by the reference numeral 92, of a spraying device according to the invention. The fluid line 92 can be used, for example, in the spray device 90 instead of the fluid line 26 thereof.

The fluid line 92 comprises two fluid line sections 94, 96, of which the fluid line section 94 includes the inlet 34 and the fluid line section 96 the outlet 40, on which the nozzle 42 may be arranged. The fluid conduit sections 94, 96 are rigid.

The fluid line 92 comprises a joint element 98, which connects the fluid line sections 94, 96 to one another in an articulated manner. For this purpose, the articulated element 98 is manufactured, in particular, from an elastically deformable material and connected in the manner of a sleeve or a bellows to end sections of the fluid line sections 94, 96. Via a deformation section 100, for example formed by means of a constriction 102, the fluid line sections 94, 96 can be moved relative to each other.

The drive device 52 engages via the drive wheel 70, preferably at the fluid line section 96, downstream of the joint element 98, with respect to the direction of the flowing liquid, arranged fluid line section. FIG. 6 shows, by means of a dashed marking 104, where, for example, the passage opening 84 of the drive wheel 70 could be arranged.

In a corresponding manner, the joint element 98 is preferably arranged upstream of the drive wheel 70 in the direction of flow of the liquid. FIG. 5 shows by way of example a dashed marking 106 the position of the joint element 98. FIGS. 7 to 11 show an advantageous embodiment of the spraying device according to the invention, designated by the reference numeral 110.

In the spray device 110 is preferably also the flexible

Hose line 38 used as a fluid line 26, but it could also be provided instead of a rigid fluid line. The nozzle 42 is arranged at the outlet 40, wherein in the case of the spraying device 110, to a certain extent, the above-mentioned holding element 44 is designed to be movable in order to displace the nozzle 42. This will be explained below.

The drive device 52 comprises the drive motor 54, on the drive shaft 72 of which the eccentric body 68 is fixed and can be driven to rotate about the rotation axis 76. In the present case, the axis of rotation 76 is an axis of rotation of the drive shaft 72.

Eccentrically with respect to the axis of rotation 76, the eccentric body 68 comprises an eccentric member 112, configured in the present case as a projection (for example, a pin-shaped projection).

The eccentric body 68 is a drive wheel in the spray device 110.

The drive device 52 comprises a coupling element 114. The coupling element 114 is pivotably mounted on the housing 18 in the receiving space 58. A pivot axis 116 preferably runs parallel to the axis of rotation 76 and is arranged at a distance from the eccentric member 112.

The coupling element 114 is in engagement with the eccentric member 112. For this purpose, a receptacle 118 on the coupling element 114 is formed for the eccentric member 112, for example, between two spaced apart limbs 120. Upon rotation of the eccentric body 68, the coupling element 114 due to the movement of the eccentric member 112 in the receptacle 118 about the pivot axis 116th pivoted back and forth. The coupling element 114 comprises a passage opening 122, which is at least partially penetrated by the hose line 38 with the outlet 40 and in particular the nozzle 42. Furthermore, the drive device 52 comprises a push element 124. The push element 124 comprises an engagement opening 126, into which the hose line 38 engages with the outlet 40 and in particular the nozzle 42. It could also be provided that the opening 126 will be penetrated.

The hose line 38 is mechanically coupled to the coupling element 114 and / or the thrust element 124 and abuts, for example, on the edge of at least one of the openings 122 or 126.

The thrust element 124 is assigned a guide 128, which is secured to the housing 18 by means of holding sections 130. The thrust element 124 is displaceable along the guide 128. The direction of displacement is indicated in the drawing by a double arrow 132.

During operation of the drive device 52, the coupling element 114 pivots about the pivot axis 116. In this way, the hose 38 is acted upon by a force. However, since the nozzle 42 is fixed to the pushing element 124, the nozzle 42 does not perform a pivoting movement but rather a sliding movement along the displacement direction 132.

The hose line 38 is moved periodically and defined by the mechanical coupling with the drive device 52 as long as the drive motor 54 is activated. In this case, the position of the outlet 40, in particular the nozzle 42, is changed. The nozzle axis is offset in particular by the displacement movement in parallel. The spot beam emitted by the spray device 110 is thus moved in a plane and simulates a flat jet. In this way, the achievable with the spray device 110 area performance can be significantly increased. FIG. 12 schematically shows a partial representation of a spraying device according to the invention and designated by the reference numeral 140. Shown here is a section of the spray head 16.

In the spray device 140, for example, a flexible or a rigid fluid line 26 is provided.

At the outlet 40, a nozzle 42 is arranged, wherein a nozzle axis 142 is aligned at an angle and in particular obliquely to an axis 144 of the fluid line 26. The angle between the axes 142, 144, for example, about 0.5 ° to 10 °, defines an opening angle of a cone, on the mantle of which a jet, which can be emitted by the spray device 140, and in particular a point jet, runs.

The drive device 52 comprises the drive motor 54, whose drive shaft 72 is mechanically coupled to the fluid line 26 via a drive element 146. The drive element 146 is, for example, a drive element 148, in particular a drive belt. Also conceivable are other types of drive elements 146 for transmitting a tensile force, for example a rope or a chain.

By means of the drive device 52, the fluid line 26 can be rotated about the axis 144. As already mentioned, the spot beam describes a conical surface.

In the spraying device 140, a sealing element 150 is also shown, designed, for example, as a mechanical seal. In addition, FIG. 12 shows a bearing device 152, for example with a ball bearing, in order to support the rotating fluid line 26. It is self-evident that other advantageous embodiments of the spray device according to the invention with rotating fluid line 26 can also in particular also have a sealing element 150 and a bearing device 152. FIG. 13 shows an advantageous embodiment of a spray device according to the invention, indicated by the reference numeral 160, in a manner corresponding to FIG.

In the spray device 160, the fluid line 26 is also driven in rotation. By way of example, the drive device 52 with the drive element 148 is shown on a side facing away from the outlet 40.

An axis of the nozzle 42 is aligned, for example, with the axis 144 of the fluid line.

The outlet 40, in particular the nozzle 42, is in particular freely movable. An imbalance element 162 is provided, which is preferably arranged at the outlet 40. For example, the fluid line 26 has an eccentrically arranged weight on one side for this purpose.

During the rotation of the fluid line 26, the imbalance element 162 leads to a targeted unbalance, whereby in particular the orientation of the outlet 40 is changed so that the emitted beam and in particular spot beam describes a conical surface.

FIG. 14 shows, in a partial representation, an embodiment of the spraying device according to the invention which is indicated by the reference numeral 170, wherein, as in FIGS. 12 and 13, a part of the spraying head is shown.

In the spray device 170, the drive motor 54 is arranged axially behind a fluid line 172, which is used instead of the fluid line 26. The fluid line 172 has a single-branch section 174 with the inlet 34 and an output section 176 connected to the latter. The single-branch section 174 is arranged at an angle to the output section 176. An extension of the output portion 176 beyond the single-branch portion 174 forms a protruding portion 178. The fluid line 172 is designed as a flexible hose line and engages with the protruding portion 178 in the eccentric body 68 a. The eccentric body 68 forms for this purpose an opening 180, which is designed, for example, like a blind hole. An axis of the fluid line 172 is aligned with an axis 182 of the eccentric body 68.

The eccentric body 68 is coupled to the drive motor 54 via the drive shaft 72. The axis of rotation 184 of the drive shaft 72 is at a distance from the axis 182, so that the eccentric body 68 is held eccentrically relative to the axis of rotation 184 on the drive shaft 72.

Alternatively, it can be provided that the eccentric body 68 is aligned coaxially with the drive shaft 72, wherein the opening 180 with the axis 182 is formed eccentrically to the axis of rotation 76 in the eccentric body 68.

In the case of the spraying device 170, the outlet 40, in particular the nozzle 42, is fixed to the housing 18 via the retaining element 44. When the drive device 52 is in operation, the eccentric body 68 rotates. Due to the eccentric alignment of the opening 180 with respect to the rotation axis 84, the fluid line 172 performs a movement with lateral deflection. This results in that the orientation of the outlet 40, in particular the nozzle 42, is changed.

In a variant of the spraying device 170, this is shown by dashed lines in Figure 14, it can be provided that the outlet 40 is free of fixation in the housing 18. The free end of the fluid line 172 is disposed in the opening 50 of the cover member 48 shown schematically.

FIGS. 15 and 16 show an advantageous embodiment of the spraying device according to the invention, designated by the reference numeral 190. The spraying device 190 is based on the spraying device 10 and comprises in comparison to this an adjusting element 192 with which different spray patterns of the liquid jet to be delivered can be produced. It It is understood that such an adjustment element could also be present in all the spray devices disclosed here.

The adjusting element 192 is arranged upstream of the cover element 48 and, for example, held movably on the housing 18, wherein in the present case a pivotable mounting of the adjusting element 192 on the housing 18 is provided. An actuator 194 is provided, with which the adjusting element 192 can be pivoted manually by the user relative to the housing 18.

The adjustment element 192 comprises a plurality of spray image openings 196 which can be brought to the alignment with the opening 50 and the outlet 40 (not shown). However, it can be provided that the covering element 48 with the opening 50 is omitted and the adjusting element 192 is arranged in the receiving space 58.

A first spray pattern opening 196 is provided, for example, to break the spot jet of the outlet 40 and thus generate a spray mist.

Another spray image opening 198 is sized so that the given spot beam is not affected. The spray image opening 198 is preferably adjusted when the spot beam is to be moved in a cone-shaped manner as explained above.

In addition, a further through-hole 200 is provided which generates a narrow, narrow-limited high-intensity spot beam.

The spray pattern openings 196 and 200 are presently not intended for use when the drive means 52 is activated.

It is favorable if the position of the adjusting element 192 can be detected, for example mechanically and / or electrically by means of a detection element. If the adjusting element 192 assumes a position in which one of the Spray image openings 196, 200 flush with the opening 50 or the outlet 40, the drive device 52 can be deactivated. Conversely, the operation of the drive device 52 is maintained or made possible, for example, when the spray image opening 198 is aligned with the opening 50 or the outlet 40.

In the previously presented advantageous embodiments of the inventive spray device, the drive device was mechanically coupled to the fluid line. Alternatively or additionally, a different type of coupling may be provided, for example an electrical, electromagnetic or magnetic coupling. An example of a magnetic coupling is shown schematically in FIGS. 17 and 18.

The drive device 52 includes, for example, the drive motor 54 to drive the drive shaft 72 in rotation about the rotation axis 76. For example, a drive wheel 202 is held on the drive shaft 72.

The drive wheel 202 is assigned a further drive wheel 204 of the drive device 52. In the present case, the drive wheel 204 is aligned coaxially with the fluid line designed in particular as a hose line 38. By rotating the drive shaft 72, the drive wheel 204 is rotated about the hose line 38. The drive wheel 204 is, for example, rotatably mounted in the housing 18 (not shown in the drawing).

The drive wheels 202, 204 are configured for example as gears.

For magnetic coupling of the drive device 52 with the hose line 38, two magnetic elements 206, 208 are provided in the present case. In the present case, the magnetic element 206 is fixed to the drive wheel 204 and, together with the latter, can rotate about the axis of the hose line 38. The magnetic element 208 is fixed to the hose line 38. The magnetic elements 206, 208 may be permanent magnets or electromagnets. The relative arrangement of the magnetic elements 206, 208, for example, such that in their approximate state (Figures 17 and 18) is a mutual attraction. In the approximated state, the magnetic element 208 is pulled in the direction of the magnetic element 206, whereby the hose line 38 is continuously, as long as the drive means 52 is in operation, periodically and deflected in a defined manner. Alternatively it can be provided that the magnetic elements 206, 208 repel each other in their approximated state. This also leads to a deflection of the hose line 38 continuously, periodically and in a defined manner.

It is understood that a plurality of magnetic elements can be arranged on the drive wheel 204 and / or on the fluid line 26.

In the following, reference will be made to an advantageous embodiment of the spraying device according to the invention shown in FIGS. 19 to 23 and designated by the reference numeral 220. In this case as well, the main differences compared to the spray device 10 are considered. The above explanations apply correspondingly to the spray device 220, and the advantages mentioned in connection with the spray device 10 can also be achieved with the spray device 220. Reference is made to the preceding explanations.

The spraying device 220 differs from the spraying device 10 in that the spraying head 16 comprises two sections 222, 224 facing one another with respect to an axis 226 of the gripping element 14 (FIG. 21). The axis 226 is defined here by the fluid line 26. Accordingly, the grip element 14 protrudes from the spray head 16, which projects beyond an imaginary extension of the grip element 14 in two directions.

In the proper use of the spray device 220, the section 222 faces away from the user and the section 224 faces the user. The section 222 accommodates the drive device 52, in particular its drive motor 54 and the eccentric body 68. Furthermore, the section 222 receives the fluid line 26.

The section 224 receives in particular the at least one battery, where in the present case two batteries 60 are provided.

An angle between the handle member 14 and the spray head 16 is approximately 110 °, measured as the greater of the two angles between the axis 226 and an axis 228 of the fluid conduit 26 at the inlet 34. In this case, the axis 228 coincides with the axis of rotation 76 of the eccentric body 68 together (Figure 21). The two axes 226, 228 approximately intersect in the region of the inlet 34, at which the fluid lines 24, 26 are connected to one another in a fluid-tight manner.

It is favorable that the drive device 52 and the batteries 60 are arranged on opposite sides with respect to the axis 226. This proves to be advantageous for handling, since the weight of the spray head 16 is distributed more uniformly with respect to the handle element 14 and the hand weight of the spray device 220 is perceived as relatively low.

On the side facing away from the outlet 40 and the user facing side of the spray head 16, the housing 18 has a cover 230. The cover element 230 can preferably be detached from the housing 18 manually and without tools by the user in order to remove the batteries 60 from the housing 18 and insert them into the latter.

The batteries 60 are arranged in the receiving space 56 together with the drive motor 54. In the case of the spraying device 220 too, the receiving spaces 56, 58 are sealed relative to one another in order to prevent the penetration of liquid into the receiving space 56. The receiving space 58 may be sealed in the region of the inlet 34, for example relative to a receiving space 232. For this purpose, for example, a holding element 234 between the intermediate wall 36 and a bottom wall 236 of the housing to seal. The holding member 234 may be a damper to attenuate vibrations on the housing 18. In the receiving space 232, the fluid line 24 is arranged as well as a part of the electrical device 62 in the form of a switching element 238th

As can be seen in particular from FIGS. 22 and 23, the eccentric body 68 in the spraying device 220 comprises a plurality of elements. In particular, the eccentric body 68 is designed in two parts and has the drive wheel 70 and a cover element 240. Furthermore, an intermediate element 242 is provided. However, two of these elements or all three elements could be formed integrally with each other.

The drive wheel 70 couples with the drive wheel 74 of the drive shaft 72 and is rotatably driven about the rotation axis 76. In the drive wheel 70, a receptacle in the form of the passage opening 84 is formed. The fluid line 26, largely configured as a hose line 38, passes through the passage opening 84.

The cover member 240 forms a relative to the housing 18 movable and in particular rotatable support member 244 for the outlet 40, in particular for the nozzle 42 (Figure 23). For this purpose, a receptacle in the form of an engagement opening 246 is formed on the cover element 240, which has a protruding edge 248. The engagement opening 246, whose axis is designated by the reference numeral 250, is arranged eccentrically with respect to the axis of rotation 76. Here, the axis 250 of the rotation axis 76 at a greater distance than the axis 86 of the passage opening 84. This proves to be advantageous for the alignment of the hose 38 relative to the eccentric body 68th The cover element 240 closes with a cover section 252 an opening 254 of the housing 18. The engagement opening 246 has in the cover section 252 the opening 50, through which the liquid jet can be discharged.

The cover element 240 is non-rotatably connected to the drive wheel 70, present by latching. On the cover 240 locking hooks 256 are arranged, which pass through the drive wheel 70 and lock with this. Support elements 257 extend from the cover section 252 in the direction of the drive wheel 70 and abut against it. The distance of the drive wheel 70 from the cover 240 is thereby clearly defined.

When the drive device 52 is actuated, the drive wheel 70 rotates together with the cover element 240 about the axis of rotation 76. The nozzle 42 abuts the edge 248. As a result of the rotation about the axis of rotation, the fluid line 26 is moved continuously and in a defined manner, so that the discharged liquid jet describes a conical jacket. The fluid line 26 does not rotate itself, as a result of the fixed inlet 34. Only the hose line 38 is deformed.

In relation to the spray device 10, the construction of the spray device 220 proves to be advantageous because the energy required to deform the hose line 38 is lower.

The intermediate element 242 is arranged between the drive wheel 70 and the cover element 240. In the present case, the intermediate element 242 is configured as a ring 258, which is positioned coaxially to the drive wheel 70 and to the cover element 240 with respect to the axis of rotation 76.

The drive wheel 70 is connected to the intermediate element 242, in this case by latching. Latch hooks 260 of the drive wheel 70 pass through an opening 262 of the ring 258 and engage with it. About the intermediate element 242 of the eccentric body 68 is mounted relative to the housing 18 in the radial and axial directions, relative to the axis of rotation 76, and guided over a guide 264. The intermediate element 242 comprises on the ring 258 and on the inside of the housing 18 arranged engagement elements. Presently, the engagement members are configured as ribs 266 which project radially from the ring 258 with two axially spaced groups of ribs 266. Engaging elements in the form of radially projecting ribs 268 of the housing 18 engage in the resulting grooves. A group of the ribs 266 of the ring 258 engage in grooves between axially spaced ribs 268 of the housing 18 (Figure 23). The ring 258 is thereby rotatably held on the housing 18 and axially and radially fi xed.

The guide 264 of the eccentric body 68 clearly defines its rotation when the drive motor 54 is activated. This ensures the clearly defined movement of the nozzle 42 for the output of the spatially variable spot beam.

In the spraying device 220, the actuating element 30 forms the triggering element 64. In the present case, the actuating element 30 is a Betätigungshe- bel on the housing 18 in the transition region from the handle member 14 for

Spray head 16 is hinged (Figures 20 and 21).

The actuating element 30 is designed in two stages. When pulled by the user, first the valve element 28 is displaced via an actuator 270 in order to release the flow of liquid through the fluid line 24 and thus the supply to the fluid line 26.

Upon further pulling, the actuating element 30 continues to pivot relative to the housing 18. As a result, a triggering element 272 actuates the switching element 238. The trigger member 272 projects from the operating portion of the operating member 30 into the receiving space 232 and is pivoted together with the operating portion. If the trigger member 272 contacts the switching element 238, the drive motor 54 is set in motion.

The two-stage operation of the actuator 30 is communicated to the user via a haptic feedback. A haptic element 274, in the present case a hook 276 arranged on the fluid line 24, couples with a corresponding receptacle 278. If the valve element 28 is initially opened, the haptic element 274 tangibly engages the receptacle 278 for the user. Upon further pulling to actuate the switching element 238, the user receives another haptic feedback when the haptic element 274 slides out of the receptacle 278. For the user, it can be detected haptically when the valve element 28 opens and when the drive motor 54 is set in motion.

If the user's force on the actuating element 30 is eliminated, this is pivoted relative to the housing 18 under the action of a restoring device 280. Initially, the actuation of the switching element 238 is omitted, wherein the fluid line 24 is still open. As the force of the user continues to decrease, the valve element 28 closes the fluid line 24, and the actuation element 30 assumes the starting position in which neither liquid is sprayed nor the drive motor 54 is activated.

In the present case, the return device 280 comprises a return spring 282 acting on the actuator 270.

LIST OF REFERENCE NUMBERS

10, 90, 110, 140, 160, 170, 190, 220 spraying device

12 spray gun

14 handle element

16 spray head

18 housing

20 inlet

22 connection element

24 fluid line

26 fluid line

28 valve element

30 actuator

32 outlet

34 inlet

36 intermediate wall

38 hose line

40 outlet

42 nozzle

44 retaining element

46 bearing element

48 cover element

50 opening

52 drive device

54 drive motor

56 recording room

58 recording room

60 battery

62 electrical device

64 triggering element

66 buttons

68 eccentric body

70 drive wheel drive shaft

drive wheel

axis of rotation

support element

ring section

holding section

Through opening

axis

shell

fluid line

Fluid line section

joint element

deforming section

constriction

mark

eccentric

coupling element

swivel axis

admission

leg

Through opening

push element

engagement opening

guide

holding section

displacement direction

nozzle axis

axis

driving element

sealing element Storage facility

deflecting

fluid line

Einzweigabschnitt

Output section protruding section

opening

axis

axis of rotation

adjustment

actuator

Sprühbildöffnung

drive wheel

magnetic element

sprayer

section

axis

cover

accommodation space

retaining element

bottom wall

switching element

cover

intermediate element

retaining element

engagement opening

edge axis

cover

opening

latch hook

support element

ring

latch hook

opening

guide

rib

actuator

trigger member

haptic

hook

admission

Reset device

Return spring

Claims

1. spraying device for spraying a liquid, in particular a low-pressure region,

which spray device (10; 90; 110; 140; 160; 170; 190; 220) is designed to be hand-held and manually operable, comprising

a spray head (16) and a handle element (14),

a fluid conduit (26; 92; 172) having an inlet (34) for supplying the fluid and an outlet (40) for spraying the liquid disposed on the spray head (16);

an actuator (30) for acting on a valve member (28) via which the flow of fluid through the fluid conduit (26; 92; 172) is selectively releasable or lockable,

a preferably electric drive device (52) having a drive motor (54) which is coupled to the fluid line (26; 92; 172), wherein the fluid line (26; 92; 172) via the drive means (52) for changing the position and / or the orientation of the outlet (40) is continuously movable in a defined manner.

2. Spray device according to claim 1, characterized in that the drive device (52) is mechanically and / or magnetically coupled to the fluid line (26; 92; 172).

3. A spraying device according to claim 1 or 2, characterized in that the fluid line (26; 92; 172) at the outlet (40) comprises or forms a nozzle (42) or that the outlet (40) is formed by a nozzle (42) ,

4. Spray device according to one of the preceding claims, characterized in that an outlet direction of the liquid through the nozzle (42) along an axis of the fluid line (26) extends or is aligned obliquely to this axis.

5. Spray device according to one of the preceding claims, characterized in that the outlet (40) is designed to output a spot beam.

6. Spray device according to one of the preceding claims, characterized in that the outlet (40) is movable such that a jet of the spray device (10; 90; 110; 140; 160; 170; 190; 220) describes a cone jacket.

7. Spraying device according to one of the preceding claims, characterized in that the outlet (40) is movable so that a jet of the spray device (10; 90; 110; 140; 160; 170; 190; 220) can be dispensed in a plane.

8. Spray device according to one of the preceding claims, characterized in that the spray device (10; 90; 110; 140; 160;

170; 190; 220) comprises a holding element (44, 244) on which the outlet (40), in particular the nozzle (42), rests and / or is fixed, in particular that the holding element (44) comprises or forms a bearing shell, on which the outlet (40) rolls.

9. Spray device according to claim 8, characterized in that the holding element (244) is movable by means of the drive device (52) on a housing (18) of the spray device (10; 90; 110; 140; 160; 170; 190; 220). is arranged or that the holding element (44) immovably on the housing (18) is arranged.

10. Spray device according to one of the preceding claims, characterized in that the outlet (40) without fixing by means of a holding teelementes (44; 244) and is freely movable.

11. Spray device according to one of the preceding claims, characterized in that the drive device (52) with the outlet (40), in particular the nozzle (42) is coupled and at or near the outlet (40) on the fluid line (26 ; 92; 172) attacks.

12. Spray device according to claim 1, characterized in that the drive device (52) is coupled to the fluid line (26; 92; 172) at a distance from the outlet (40), upstream of the liquid to be sprayed in the inflow direction.

13. Spray device according to one of the preceding claims, characterized in that the fluid line (26; 92; 172) at the inlet (34) is fixedly attached to the spray device (10; 90; 110; 140; 160; 170; 190;

220) is held.

14. Spray device according to one of the preceding claims, characterized in that the fluid line (26; 92; 172) is configured at least in sections as a flexible hose line (38) or comprises a flexible hose line (38).

15. Spray device according to one of the preceding claims, characterized in that the fluid line (26; 92; 172) is designed to be rigid at least in sections.

16. Spray device according to one of the preceding claims, characterized in that the fluid line (92) comprises two preferably rigid Fluids idleitungsabschnitte (94, 96), which are connected by means of a hinge member (98) movable together and tilted relative to each other, wherein the drive means (52) coupled to one of the fluid line sections (94, 96).

17. Spray device according to one of the preceding claims, characterized in that the spray device (10; 90; 110; 140; 160; 170; 190; 220) comprises at least one preferably rechargeable battery (60) for supplying power to the drive device (52).

18. Spray device according to claim 17, characterized in that the at least one battery (60) is received in a housing (18) of the spray device (10; 90; 110; 140; 160; 170; 190; 220) in the spray head (16) or in the grip element (14).

19. Spraying device according to one of the preceding claims, characterized in that the drive motor (54) laterally next to the fluid line (26) in a housing (18) of the spray device (10; 90; 110; 140; 160; 170; 190; 220) is recorded.

20. Spray device according to one of claims 1 to 18, characterized in that the drive motor (54) of the fluid line (26) is axially pre-stored, based on the flow direction of the liquid to be sprayed.

21. Spray device according to one of the preceding claims, characterized in that the drive device (52) is optionally switched on and off by a user and that the spray device (10; 90; 110; 140; 160; 170; 190; 220) is a triggering element (64) for activating the drive device (52).

22. Spray device according to claim 21, characterized in that the actuating element (30) forms the triggering element (64) or that the triggering element (64) can be actuated independently of the actuating element (30).

23. Spray device according to claim 22, characterized in that the actuating element (30) can be actuated in two stages and, when actuated, firstly releases the flow of the fluid, and upon further actuation the drive device (52) is activated.

24. Spray device according to one of the preceding claims, characterized in that the drive device (52), in particular the drive motor (54), is accommodated in the spray head (16).

25. Spray device according to one of the preceding claims, characterized in that the spray device (10; 90; 110; 140; 160;

170; 190; 220) comprises or is configured as such a spray gun (12) or a spray lance.

26. Spray device according to one of the preceding claims, characterized in that the drive device (52) comprises an eccentric body (68) which can be driven in rotation about a rotation axis (76), preferably a guide (264) for the rotation of the eccentric body (26). 68) relative to a housing (18) of the spray device (10; 90; 110; 140; 160; 170; 190; 220).

27. Spray device according to claim 26, characterized in that the eccentric body (68) is designed in one piece or comprises two or more elements which are connected and interacting with one another.

28. Spray device according to claim 26 or 27, characterized in that the eccentric body (68) encloses or forms a drive wheel (70) and a receptacle (84) arranged eccentrically with the axis of rotation (76), wherein the fluid line (26) engages in the receptacle (84) designed as an engagement opening (246) and / or engages through the receptacle formed as a passage opening (84).

29. Spray device according to one of claims 26 to 28, characterized in that the eccentric body (68) encloses or forms a cover element (240) which has an opening (254) of a housing (18) of the spray device (10; 110; 140; 160; 170; 190; 220) and closes an outlet opening for the liquid discharged from the outlet (40). having sigkeitsstrahl, preferably that the cover (240) is connected to the drive wheel (70).

30. Spray device according to claim 28 or 29, characterized in that the drive wheel (70) and / or the cover element (240) is rotatably movable relative to the fluid line (26), wherein the fluid line (26) in particular directly or indirectly an edge of a receptacle of the drive wheel (70) or the cover member (240) contacted.

31. Spray device according to one of claims 28 to 30, characterized in that on the eccentric body (68) between the drive wheel (70) and the cover (240) arranged intermediate element (242) is provided, via which the eccentric body (68) axially and / or radially on a housing (18) of the spray device (10; 90; 110; 140; 160; 170; 190; 220) is mounted, in particular that the intermediate element (242) a guide (264) or a bearing for the eccentric body (68) on the housing (18) is formed.

32. Spray device according to one of claims 28 to 31, characterized in that the drive wheel (70) axially on both sides slidably on support elements (78) rests, on a housing (18) of the Sprühvorrich- device (10; 110, 140, 160, 170, 190, 220).

33. Spray device according to claim 26 or 27, characterized in that the eccentric body (68) comprises an eccentric to the axis of rotation (76) arranged eccentric member (112) with one of the Sprühvor- direction (10; 90; 110; 140 ; 160; 170; 190; 220) pivotally mounted coupling element (114) is engaged, on which the fluid line (26) is held indirectly or directly.

34. Spray device according to claim 33, characterized in that the coupling element is provided with a push element (124) mounted displaceably on the spray device (10; 90; 110; 140; 160; 170; 190; 220). a guide (128) for the thrust element (124) is preferably provided in a housing (18) of the spray device (10; 90; 110; 140; 160; 170; 190; 220).

35. Spray device according to claim 33 or 34, characterized in that the coupling element (114) and / or the thrust element (124) comprise an opening (122, 126), wherein the fluid line (26; 92; 172) into the opening (122 , 126) engages or passes through the opening (122, 126).

36. Spray device according to one of the preceding claims, characterized in that the drive device (52) comprises or forms a drive element (146), via which the fluid line (26; 92; 172) is rotatable about its axis (86).

37. Spray device according to claim 36, characterized in that an imbalance element (162) for providing an imbalance is arranged on the fluid line (26; 92; 172), in particular at the outlet (40).

38. Spray device according to one of the preceding claims, characterized in that the drive device (52) comprises or forms a vibration element which is mechanically connected to the fluid line (26; 92; 172).

39. Spray device according to one of the preceding claims, characterized in that the spray device (10; 90; 110; 140; 160;

170; 190; 220) comprises an adjusting element (192) at the outlet (40) which has two or more spray pattern openings (196, 198, 200) which can optionally be brought into alignment with the outlet (40) for forming different spray patterns with the spray device (10; ; 110; 140; 160; 170; 190; 220).

40. Spray device according to claim 39, characterized in that the adjusting element (192) is manually adjustable.

41. Spray device according to claim 39 or 40, characterized in that the drive device (52) can be activated and / or deactivated depending on a position of the adjusting element (192).