EP2992799B1 - Portable suction device with replaceable suction nozzle - Google Patents

Description

The invention relates to a portable suction device with replaceable suction nozzle with a housing, a suction container and a suction unit for generating a suction flow. The suction device is able to provide a suction vacuum at the suction nozzle and, in a separation region of the suction material container, has separating means for dividing the suction flow into an exhaust air flow flowing out of the suction device and into suction material separated therefrom in the form of particles or fluid constituents collected in the suction material container. The suction nozzle is detachably and exchangeably insertable with a nozzle connection mouth for forming a plug connection into a connection for receiving the front part of the nozzle connection mouth, which is provided on the housing or an adapter part arranged on the housing.

The suction devices according to the invention are used in different embodiments for absorbing all possible media. In this case, both clean vacuum cleaners and liquid aspirators are used, and combination devices for alternative or combined absorption of liquids and dust or other loose dirt are known. As a generic term for all types of absorbable material below the term suction material is used.

Portable suction devices of this type for absorbing dust are from the US 4,380,845 A known. In this suction device, a replaceable suction nozzle is provided in the front area, fixed via a rotary joint. This essentially has the meaning that the front area of the suction device can be taken apart to be able to insert a vacuum cleaner bag.

From the US 5 099 545 A is a combination of a vacuum cleaner and a liquid sucker known. This has a Abziehlippe on a replaceable front suction nozzle.

The US 5,870,851 again shows a portable suction device with a replaceable front suction nozzle, which has a flea comb at the free end, can be collected and sucked through the vermin.

All three known suction devices have the disadvantage that, despite the fact that the suction nozzle is removably attached to the housing of the suction device, the suction nozzle must be rigidly inserted in a channel-like slot so that it is held there firmly. Especially in connection with universal suction devices, which should also absorb liquids and this have a front Abziehlippe, but a slight mobility of the suction nozzle to regulate the pressure of the suction nozzle on the ground is often desirable.

From the EP 2 701 568 A1 , of the DE10 2008 004 964 B3 and the DE10 2008 004 964 B3 portable suction devices for collecting and absorbing liquids are known. However, with these devices, the suction nozzle is not easily replaced by the user.

From the WO2014 / 0432712 a portable suction device according to the preamble of claim 1 is disclosed. The object of the invention is therefore to provide a portable suction device with replaceable suction nozzle, wherein the suction nozzle is easily replaceable, but still has the best possible function of the suction nozzle.

This object is achieved by a portable suction device according to claim 1, characterized in that the plug connection is designed such that the suction nozzle is rotatably supported about at least one axis of rotation, wherein the plug connection is formed by at least one engaging upon insertion of the suction nozzle in a locking element receiving latching element and the latching element receptacle and the latching element are designed such that the latched latching element is rotatably held in the latching element receptacle and, moreover, there is a clearance between the suction nozzle and the components holding it which is so large that the suction nozzle can pivot back and forth between two stops is.

The inventive design of the suction device, it is now possible, on the one hand to realize a replaceable suction nozzle, on the other hand, however, to allow a mobility of the suction nozzle within the receptacle for the suction nozzle.

This is particularly advantageous in conjunction with a provided on the housing of the suction device adapter part that has the locking element receptacle. Alternatively, of course, the locking element receptacle can also be arranged directly on the housing. The latching element of each latching connection is then provided on the suction nozzle, wherein, of course, an adapter part can also be interposed here. The adapter parts In turn, each fixed or detachable connected to the housing or the suction nozzle, here are all mounting options, in particular adhesive or welded joints, connectors or snap-in connections come into consideration.

Of course, in kinematic reversal the locking element receptacle may also be provided on the suction nozzle, so that the locking element is then arranged on the housing or on the housing-side adapter part. Again, the locking element receptacle can be attached via a nozzle-side adapter part to the suction nozzle. Preferably, several pairs of locking element receiving and locking element will be provided, so that a stable seat of the suction nozzle results, wherein alternatively, a locking element may be circumferentially formed around the suction channel, so that provided with a large locking element in a correspondingly large locking element recording also a stable support can be.

Preferably, however, a latching connection is used which has two opposite pairings of latching element receptacle and latching element. Between these two pairings then the suction channel is arranged.

The latching element receptacle is preferably formed by two elastically deformable, opposing clamping jaws or elements which form a pincer-like snap hook and are correspondingly rounded behind a threading area to form a receptacle for a cylindrical latching pin. These locking pins can then be inserted through the threading under the expansion of the two jaws of a locking element recording in this until the rounded portion is reached and the two jaws create resiliently around the outer surface of the locking pin.

Due to the fact that two latching element receptacles and two latching pins are used opposite, the suction nozzle can be rotated about an axis of rotation which passes through the center axis of the latching pin, wherein the possible pivoting angle is limited by stops within the adapter part or the housing. To produce the mobility required for this purpose, on the one hand, the rotationally symmetrical latching pins are arranged opposite one another and arranged on a common axis of rotation and are held rotatably in the latching element receptacle. On the other hand, the suction nozzle on the device in a locking element recordings containing nozzle holder held so that, with the exception of the holder of the locking pin in the locking element mounts between all other components remains a game that allows the pivoting of the suction nozzle relative to the nozzle holder. The pivot angles made possible by this are rather small in preferred embodiments, for example 1 ° to 10 ° in at least one of the possible directions. Ultimately, however, the pivoting angle depends on the purpose and can be chosen larger if required.

If desired, the nozzle holder or the adapter part can also be rotatably mounted on the housing or have a rotatable area with the locking element receptacles. The suction channel is then formed or connected to the housing, that the nozzle-side part and the housing-side part of the suction channel can be rotated relative to each other and the axes of rotation of the two parts of the suction channel and the rotatable portion of the adapter part with the locking element recording are congruent to each other. This makes it possible that the suction nozzle is not only pivotable, but also rotatably mounted on the housing. At the same time it can continue to be kept interchangeable on the locking element receptacle and the locking elements. Also, the rotational movement of the suction nozzle may preferably be limited by stops, and also locking means may be provided here, which hold the suction nozzle in a central position, so that unintentional rotation of the suction nozzle is avoidable.

Another advantage of the pivotable mounting of the replaceable suction nozzle is that the pivoting movement can be used to control the performance of the suction motor motor or to turn the motor on or off. For this purpose, contacts or at least one circuit breaker are provided. As a result of the pivoting movement, the motor control is then controlled by operating the circuit breaker or closing the contacts. If, for example, the suction nozzle is moved about the pivot axis extending through the locking elements by a defined pivoting angle, either a pressing force is exerted on a button or adjacent contacts are closed by an electrically conductive region of the suction nozzle, so that the motor control detect this pivot angle and this Power control of the engine can use. This is particularly convenient because the generic devices are usually battery-powered or battery-powered, so that the energy capacity is protected can only be achieved if the motor provides full power only when pressure on the suction nozzle indicates that the device is in a ready-to-operate position.

The suction channel extends with the nozzle connection mouth in the direction of the housing, which in turn has a connection possibility for the nozzle connection mouth. This can be formed by a forward protruding pipe socket into or onto which the nozzle connection mouth can be inserted. Of course, the nozzle connection mouth can also be formed so long via a nozzle-side nozzle that it can be inserted directly into a corresponding opening of the housing, without the need for a housing parts nozzle. In this case, the nozzle connection or the nozzle-side nozzle must be sufficiently elastic so as not to lift the mobility of the suction nozzle.

In any case, the suction channel in the region between the suction nozzle and the housing is formed so that on the one hand to replace the suction nozzle a separation can be made, ie a plug connection is present, and on the other hand, the pivoting of the suction nozzle is made possible by the suction channel. If the suction nozzle is also rotatable about the central axis of the suction channel, the connection of the two parts of the suction channel must also make this possible while maintaining a sealing function.

The seal between the nozzle connection mouth and the housing-side part of the suction nozzle is preferably formed so that a centering is included. Further, the connector through which the suction nozzle is attached to the adapter part or the housing, preferably designed so that the two parts of the nozzle also automatically find when joining the suction nozzle to the housing or the adapter part to each other.

The connection of the Düsenanschlussmundes with the housing-side part can be realized, the at least one of the two parts has an end piece that is made of an elastic material, for example rubber or silicone. Thus, for example, the free, nozzle-side end of the intake manifold to form a Einstecktrichters initially extended outward in the direction of its free end and turned over at the free end by 180 ° inwards. In This, with increasing depth of penetration narrowing insert then the nozzle-side part of the suction channel can be inserted. The elastic design allows on the one hand the pivoting of the suction nozzle and on the other hand ensures the seal.

The suction channel may be formed in preferred embodiments in cross section round or oval. A non-round configuration has the advantage that it is simultaneously avoided that the suction nozzle of an unsuitable orientation is attached to the device. Furthermore, a non-circular, in particular oval shape of the insertion of the two parts of the suction channel when inserting into the funnel area cause a centering, since the achievement of the increasingly narrower range of the housing-side inner part of the suction channel with the associated elastic forces automatically aligning the suction with it bring. This is particularly convenient because the locking elements must indeed meet the locking element recordings, so that the locking can be done. For this purpose, the centering effect is preferably achieved even at an insertion depth, which lies before the coincidence of the locking elements with the front part of the locking element receptacle.

So that the suction nozzle can not be mounted in a wrong orientation, bypassing the locking action, locking means can be provided to prevent a partial or complete insertion of the suction nozzle in the adapter part or the housing when the angular position of the suction nozzle to the housing or the adapter part is not suitable is to allow a connection of the locking element receptacles with the locking elements. This can in particular prevent damage to the locking element receptacles by incorrect attachment of the locking elements.

A particular advantage of the interchangeability of the suction nozzle is that with otherwise identical design of the other parts of the suction device, this is even better suited to absorb both liquids and air currents contained therein dirt in the form of larger particles or dust effectively. An optimal suction result or optimal use of the device often failed because of the fact that the suction nozzle is not adapted to the particular use or that during fluid suction a Abziehlippe is needed, which in turn disturbs the vacuuming.

So it is often desirable when vacuuming larger particles, that at times a higher suction power is available to be able to absorb even heavier particles. For this, the suction nozzle would have to have the smallest possible intake channel. However, if the device is to be used for the suction drying of damp window panes, a Abziehlippe is required with which the liquid can be collected and sucked. Here is the widest possible nozzle will be required to achieve a good suction with the suction that a battery-powered device can usually provide. It is advantageous that by replacing the suction nozzle, the device can be optimally adapted to the respective requirements. Even within the same field of application, the interchangeability can be used. Who wants to clean large windows, will prefer a broad Abziehlippe, the owner of an old building with lattice windows, however, a narrower Abziehlippe that fits between his rungs.

In the following description of the drawings, the individual components of the invention with reference to preferred embodiments will be described in detail. Different areas of the suction device are provided with nine optimized functions. This is on the one hand, the connector of the connection of the suction nozzle and adapter part or housing, which provides an interchangeability of the suction nozzle while maintaining a pivoting possibility. In addition, a further aspect relates to the realization of a switch for power control of the engine and a third aspect of the optimal installation of the engine at the rear end of the suction channel. The different aspects can also be used independently in portable suction devices and can be combined to preferred embodiment without the respective other features.

The subclaims relate to advantageous embodiments of the invention.

Fig. 1

ein erfindungsgemäßes Sauggerät,

Fig. 2

das Sauggerät aus Figur 1 in einer Schrägansicht von vorne,

Fig. 3

die Befestigung der Saugdüse über ein Adapterteil,

Fig. 4

das Adapterteil und die daran zu befestigende Saugdüse im Detail,

Fig. 5

die Bauteile aus Figur 4 aus einer anderen Perspektive,

Fig. 6

die Verrastung der Saugdüse am Adapterteil mit Schaltfunktion,

Fig. 7

die mit dem Adapterteil verrastete Saugdüse in einer Seitenansicht,

Fig. 8

die in Figur 6 und 7 dargestellte Schaltfunktion in einer Seitenansicht,

Fig. 9

ein erfindungsgemäßes Sauggerät in einer Seitenansicht im Schnitt,

Fig. 10

die Steckverbindung zum Verbinden des Strömungskanals des Sauggerätes aus den vorangehenden Figuren (Detailansicht "A" aus Figur 5),

Fig. 11

die Steckverbindung nach Figur 10 in einer Seitenansicht,

Fig. 12

eine Frontansicht eines erfindungsgemäßen Sauggerätes zur Darstellung der Schnittebene,

Fig. 13

den Schnitt entlang der Schnittlinie "B-B" in Figur 11,

Fig. 14

das Lüfterrad des Saugaggregates des Sauggerätes nach den vorhergehenden Figuren in einer Detailansicht im Schnitt,

Fig. 15

das Lüfterrad aus Figur 14 in einer dreidimensionalen Darstellung

Fig. 16

das Lüfterrad aus den Figuren 14 und 15 in einer Ansicht von vorne,

Fig. 17

das Lüfterrad aus den Figuren 14, 15 und 16 in einer Seitenansicht,

Fig. 18

den Lufteintritt in das Saugaggregat aus den Figuren 14 bis 17 in einer Detailansicht,

Fig. 19

die Grundkomponenten Tank, Spritzschutz und Düsenhalter des Sauggerätes aus den vorstehenden Figuren in einer Detailansicht,

Fig. 20

eine Staubdüse zum Ansetzen an den Düsenhalter,

Fig. 21

ein erstens Schaltmittel zum Schalten des Saugaggregates über das Schwenken der Saugdüse,

Fig. 22

ein zweites Schaltmittel zum Schalten über das Schwenken der Saugdüse, und in

Fig. 23

ein drittes Schaltmittel zum Schalten des Saugaggregates über das Schwenken der der Saugdüse.

In the drawings shows:

Fig. 1

an inventive suction device,

Fig. 2

the suction device off FIG. 1 in an oblique view from the front,

Fig. 3

the attachment of the suction nozzle via an adapter part,

Fig. 4

the adapter part and the suction nozzle to be attached thereto in detail,

Fig. 5

the components off FIG. 4 from a different perspective,

Fig. 6

the locking of the suction nozzle on the adapter part with switching function,

Fig. 7

the suction nozzle latched to the adapter part in a side view,

Fig. 8

in the FIGS. 6 and 7 illustrated switching function in a side view,

Fig. 9

an inventive suction device in a side view in section,

Fig. 10

the connector for connecting the flow channel of the suction device from the preceding figures (detail view "A" from FIG. 5 )

Fig. 11

the connector after FIG. 10 in a side view,

Fig. 12

a front view of a suction device according to the invention for the representation of the sectional plane,

Fig. 13

the section along the section line "BB" in FIG. 11 .

Fig. 14

the fan of the suction unit of the suction device according to the preceding figures in a detailed view in section,

Fig. 15

the fan off FIG. 14 in a three-dimensional representation

Fig. 16

the fan from the FIGS. 14 and 15 in a view from the front,

Fig. 17

the fan from the FIGS. 14, 15 and 16 in a side view,

Fig. 18

the air inlet into the suction unit from the FIGS. 14 to 17 in a detailed view,

Fig. 19

the basic components tank, splash guard and nozzle holder of the suction device from the preceding figures in a detailed view,

Fig. 20

a dust nozzle for attachment to the nozzle holder,

Fig. 21

a first switching means for switching the suction unit via the pivoting of the suction nozzle,

Fig. 22

a second switching means for switching over the pivoting of the suction nozzle, and in

Fig. 23

a third switching means for switching the suction unit via the pivoting of the suction nozzle.

In FIG. 1 a preferred embodiment of a portable suction device is shown. The suction device is designed here as a device for collecting and absorbing liquids. However, this is only an exemplary use, the suction devices according to the invention are also suitable for all other applications.

The suction device shown has a housing 1, to which a suction container 2 is removably attached in the middle, lower area. The suction material container 2 has a lateral discharge opening 9, via which the collected liquid can then be removed from the suction container 2, if it is not dismantled. Here, the suction material container 2 has a separation area 8 in the front region, in which, as will be explained in detail later, the liquid is separated from the liquid-air mixture sucked in. In the rear area, the suction device has a motor 25 which is not visible here and which sucks the air out of the suction material container 2 and ejects it from the device via lateral outlets.

The housing 1 has at the top a handle 3, on which an on / off switch 18 is provided for the fundamental switching on or off of the motor 25, wherein switching-on can also mean that the motor 25 is switched to a stand-by mode , In the front region, an adapter part 13 (not visible here) is arranged on a nozzle holder 6 and connected to the housing 1. The nozzle holder 6 or the adapter part 13 clamp the suction material container 2 between itself and the rear region of the housing 1 with the motor 25, so that it is held firmly in the housing 1. To remove the suction container 2, the nozzle holder 6 can be separated from the housing 1 via a trigger mechanism, so that the suction container 2 can be pulled out and removed with the suction nozzle 4 to the front. In the rear part of the housing 1, a handle receptacle 7 is provided, via which the suction device can be connected to a handle, so that the user can achieve a greater range.

The suction nozzle 4 of the illustrated device is exemplified as a suction nozzle 4 for withdrawing and absorbing liquids. This suction nozzle 4 has a Abziehlippe 5, which comprises two mutually parallel single lips, one of which provides the actual Abziehfunktion, while the other lip together with the front lip forms a wide slotted nozzle through which the Saugunterdruck on the liquid, the located on the peeled surface before the Abziehlippe acts. In order for the liquid to be able to penetrate into the gap between the two lips and then be sucked up, the rear lip has smaller openings and is also provided with webs which project towards the front lip. The latter prevent the two lips from clinging to one another and thus close the suction nozzle.

One aspect of the suction device is in FIG. 2 shown, which shows the suction material container 2 and the front nozzle holder 6 with the above protruding adapter part 13. In front of the nozzle holder 6, the suction nozzle 4 is shown, not yet connected to the nozzle holder 6 here.

The adapter part 13 has lateral attachment cams, via which the adapter part 13 can be releasably connected to the housing 1 suction device. From the front Abziehlippe 5, the flow path initially extends through the suction nozzle 4 to a Düsenanschlussmund 11. If the suction nozzle 4 is inserted into the nozzle holder 6, connects simultaneously the Düsenanschlussmund 11 with a nozzle 17 for receiving the Düsenanschlussmundes 11. This nozzle 17 for receiving the nozzle connection mouth 11 is arranged either on the nozzle holder 6 or preferably directly on the suction container 2 and forms a projecting in the direction of the suction nozzle 4 pipe socket, which opens into the suction container 2 and directs the flow there in the separation area 8.

The Düsenanschlussmund 11 may be made as well as the nozzle 17 for receiving the Düsenanschlussmundes 11 of an elastic material, the materials are preferably selected so that the mating pieces of suction nozzle 4 and nozzle holder 6 and adapter part 13, the two parts together reliably and sealing , For this purpose, one of the two parts can be made of a rigid material, while the other part is then rather elastic. Thus, for example, formed in the form of a pipe nozzle nozzle connection mouth 11 may be relatively rigid, for example, consist of a little elastic plastic. At this an additional rubber seal can be provided in the front area. The device-side nozzle 17 for receiving the Düsenanschlussmundes 11 may then consist of a soft material, for example made of silicone.

In a preferred embodiment, the device-side nozzle 17 for receiving the Düsenanschlussmundes 11 is formed such that it slightly widens in the direction of its free, the suction nozzle 4 facing the end in diameter. This forms a threading funnel, into which the nozzle-like nozzle connection mouth 11 can be inserted when attaching the suction nozzle 4 to the nozzle holder 6. By shaping it is achieved that the two components can be securely mated together. A further advantageous development of the connecting piece 17 comprises a wall folded inwards by 180 °, so that the connecting piece 17 has the shape of a pipe socket with a rounded front edge.

Thus, the connection of the suction channel, so the connection of Düsenanschlussmund 11 and nozzle 17, is sufficiently tight, the nozzle-like shaped outer side of the Düsenanschlussmundes 11 may be provided with an outwardly projecting sealing flange to which the made of silicone, for example, connecting piece 17 after the Mating the components can seal. Due to the elastic material can be guaranteed at the same time tolerance compensation while maintaining the sealing function.

In order to avoid attaching the suction nozzle in an undesired orientation, the suction channel may be non-circular, for example oval. In this way, a centering is effected simultaneously by the elastic forces during assembly of the nozzle connection mouth 11 and the nozzle 17.

As in FIG. 2 can also be seen, the suction nozzle 4 is connected via a latching connection with the provided in the nozzle holder 6 adapter part 13. This locking connection is in detail in the Figures 3-6 shown.

The latching connection here comprises on the side of the suction nozzle 4 in the direction of the nozzle holder 6 protruding holding elements, which are provided on both sides of the Düsenanschlussmundes 11 and each having a locking element 10. The locking element 10 in turn is at least partially cylindrical and is of a locking element receptacle 14 (see. FIG. 4 ) received and held in the inserted state.

The locking element receptacle is, as best of FIG. 4 can be seen here formed by two claw-like components, which in turn have an upper and a lower jaw. These jaws can be pressed against overcoming an elastic spring force when pushing the locking elements 10 apart until the locking elements 10 reach the area at which a rounded portion adapted in shape to the upper and lower surface of the cylindrically shaped locking elements 10 in these areas is. This rounded area then sets driven by the elastic restoring force of the jaws to the locking elements 10 and thus holds the locking elements 10 in their position.

The use of the at least partially cylindrical locking element 10 in conjunction with the associated locking element receptacle 14 has the advantage that the suction nozzle 4 is pivotable about small angles in the holder. The internally rounded portion of the jaws forms a kind of bearing eye, which engages the locking elements 10 and at the same time rotatably supports.

The possibility of being able to pivot the suction nozzle 4 relative to the nozzle holder 6 or adapter part 13 by a certain angular range has several advantages. On the one hand, this can be achieved by applying a compressive force on the suction nozzle 4, a certain force limitation. In addition, the pivotal movement can be used to regulate the power of the motor 25. The circuit breaker 20 acts together with the on / off switch 18, wherein in the preferred embodiment of the on / off switch 18 basically starts the engine 25, but this initially with low power to save battery or battery capacity in a stand-by Mode is located. By operating the circuit breaker 20, the motor 22 will then start up, so that the full suction power is available.

Preferably, the storage of the suction nozzle 4 is formed so that when no pressure force on the front portion of the suction nozzle 4, this is returned by elastic restoring forces back to the starting position. This can then be used to shut down the engine power or to turn off the engine. The adapter part 13 has contacts 19 (cf. FIG. 3 ), so that the attachment to the housing 1 makes the necessary connections.

In particular, it can be seen in FIG. 4 that, in a preferred embodiment of the invention, the latching elements 10 extend with a rear area deeper into the latching element receptacles 14 beyond the latching elements. This designated here as Kippschutzflansch 12 area can be used to operate the circuit breaker 20. The fact that the suction nozzle 4 can pivot about a pivot axis which extends through the locking elements 10, the Kippschutzflansche 12 also pivoted about this axis. Below the rear end is in FIG. 4 to recognize a small thickening of Kippschutzflansches 12. This thickening acts as a pressure piece and actuates the power switch 20 when pivoting.

A particular advantage of the suction device according to the invention is that the suction nozzle 4 can be replaced and can be adapted to the intended use of the device. In the simplest case, this may consist of using suction nozzles 4 with different widths of the draw-off lips 5. For example, it may be desired in some applications that the Abziehlippe 5 is as large as possible, while in other cases, for example when cleaning Butzenscheiben a larger Abziehlippe 5 is more of a hindrance. Alternatively, also equipped with a Abziehlippe suction nozzle 4 can be replaced by a pure vacuum cleaner nozzle 29, which has a much smaller suction mouth, so that at times a higher suction power is available to suck even heavier suction material can. Ultimately, due to the simple interchangeability, the suction device can be individually adapted to the desired needs.

The adapter part 13 is attached to the housing 1. For this purpose, it has fastening cams 15, furthermore, a release support 16 is provided, via which a downward pressure force of a release button can be transferred to the adapter part 13 so that the attachment cams 15 are pushed out of their receptacle and the suction material container 2 is first pressed down and then can be removed pulled forward.

In FIG. 9 is the suction device according to the invention with the exception of the rear, the motor 25 having part shown in a side view in section. It can be seen here that the Abziehlippe 5 is designed in two parts with a front and rear Abziehlippe, which are held in the suction nozzle 4. The nozzle holder 6 has an extending into the interior of the suction container 2 pipe socket, which serves as intake 21 here. In the rear part of the housing 1 of the motor 25, not shown here is arranged. This motor 25 sucks air from the suction nozzle 22, whereby a negative pressure in the suction container 2 sets. Due to the negative pressure contaminated or mixed with moisture or water air is sucked through the intake 21 into the suction container 2. There it bounces in the separation area 8 on a baffle plate 23 used as Abscheidemittel, which reverses the flow in their direction. Due to the inertia of the heavier particles or fluid constituents, these are directed outwards, while the air is sucked through a labyrinth seal into the suction nozzle 22. In the rear third of the suction container 2 a splash guard wall 24 is provided. This causes that separated from the air suction material, especially in the form of liquids, with rapid movement of the suction device does not spill too much and thus can get into the exhaust pipe 22.

In FIG. 6 and FIG. 8 In each case, the locking connection with the locking element 10 and the locking element receptacle 14 is shown again in an enlarged view. Here it can be seen that the locking element 10 has a bolt-like shaped central region, with which it is held in a corresponding receptacle in the form of a bearing eye in the locking element receptacle 14. From this central region, the locking element 10 extends further in the direction of the housing 1 with the two strip-like Kippschutzflanschen 12. These have the function that they protrude between the two, the locking element receptacle 14 forming snap hooks, thereby limiting on the one hand the pivoting angle. On the other hand, the circuit breaker 20 is provided in the rear region of the locking element receptacle 14. By tilting the suction nozzle 4 up the anti-tilt flanges 12 are pressed with its rear portion down and turned against the circuit breaker 20. As a result, the power switch 20 is actuated.

If the pressure on the front region of the suction nozzle 4 is omitted, it returns to the initial position. As a result, the circuit breaker 20 is relieved from Kippschutzflansch 12, so that this can cause the engine power is reduced again or even switched off completely. In a further advantageous embodiment of this circuit breaker 20, the retrieved power of the motor 25 can be adjusted continuously by the pivot angle and the resulting penetration depth of the switching element in the circuit breaker 20. The deeper the Kippschutzflansch 12 pushes the switching element of the circuit breaker 20 down, the greater the motor power provided and vice versa.

In FIG. 11 is the detail "A" off FIG. 9 reproduced in an enlarged view. It can be seen here that an elastic end region is placed on the intake connection 21, which projects into the suction material container 2 (not shown here). This elastic end portion forms the nozzle 17 for receiving the nozzle connection mouth 11. The pipe section of the intake is extended in the direction of its free end in diameter, so that here results in a richterartiger, narrowing inward area. In this narrowing area, the elastic conversion of the nozzle 17 is first plugged from the outside, in the region of the free end, this wall is then turned inwards by almost 180 °, so that the entire free end of the tube is sheathed.

The nozzle connection mouth 11 of the suction nozzle 4 can then be inserted into the threading funnel of the nozzle 17 thus formed. This is dimensionally stable in the front region, so that it can be easily connected to the elastic material of the nozzle 17.

The FIGS. 12 and 13 show the middle and rear part of a preferred embodiment of the suction device according to the invention, wherein FIG. 12 the cutting plane is defined and FIG. 13 the side view is in section. FIG. 14 shows the detail "B" FIG. 13 ,

In the side view, it can first be seen again in the front region that the intake manifold 21 is part of the wall of the suction material container 2. These components can be easily manufactured by injection molding. Between the suction container 2 and the upper part of the housing 1, the adapter part 13 is arranged. The front cover of the nozzle holder 6 is missing here, the adapter part 13 extends with a front release support 16 to the front and is connected in the rear area via the attachment cams, not shown, with the housing 1. In order to remove the suction material container 2, it is pressed down by a pushbutton arranged in the front region of the cover of the nozzle holder 6. As a result, the attachment cams 15 get out of engagement with the housing 1 and the suction container 2 can be pulled off to the front.

The intake 21 opens into a free pipe socket in the suction container 2. Due to the motor-driven fan 28, the internal pressure in Suction container 2 reduced during operation of the motor 25 relative to the ambient pressure, so that air and thus suction material in the form of dirt, dust or liquids is sucked through the suction nozzle 4 and the intake 21 into the suction container 22. There, the flow meets the arranged in the suction container 2 Abscheidemittel 23, which are formed here initially by a slanted to the flow direction baffle plate. This baffle deflects the flow down. The motor 25 sucks air through a suction nozzle 22 out of the suction container 2 out. The free end of the suction nozzle 22 is provided with a flow labyrinth through which the flow sucked out of the suction material container 2 has to pass. Ultimately, however, the details of the separation of suction material and air are only exemplary, the invention can also be used in connection with all other types of suction devices.

In the FIGS. 15 to 18 Details of the motor 25 and the suction device driven by it are shown. This suction device has, in addition to the motor 25, the fan wheel 28 and an air guide element 27. The suction device is essentially formed by two basic components, namely on the one hand the suction nozzle 22 and on the other hand the motor unit with the associated fan wheel 28th

In principle, the two basic components of the suction device can be designed and preassembled as one unit. In a preferred embodiment, however, both components are formed independently of one another, as is also the case in the exemplary embodiment shown. How out FIG. 9 can be seen, the suction nozzle 22 is provided with a rear sealing portion which extends radially outward in the form of a plurality of disc-like sealing plates (these are best in FIG. 19 to be recognized) inserted into the suction container 2, so that it forms a unit with this. A solid connection, for example by gluing, or a one-piece training would be possible.

The drive device in turn can be fastened either to the housing 1 or to the suction material container 2. In the embodiment shown, it is arranged for easier removal and attachment of the suction container 2 on the housing 1, which extends for this purpose with a lower part behind the suction container 2 down. For mounting the suction container 2, this is in one embodiment first inserted into a front sliding connection and then pushed a little way back until the mounting cams 15 engage the housing 1. At the same time, the basic components of the drive device come together.

A particular advantage is the optimized air flow of the connection between the two basic components of the drive device. How out FIG. 15 can be seen, the fan 28 has an annular nozzle which extends in the direction of the suction nozzle 21 and engages in this suction nozzle 21 after assembly. FIG. 14 shows this assembled state. It can be seen that the moving fan wheel 28 in the region of the annular nozzle has a diameter which is greater than the inner diameter of the suction nozzle 22. In order for the fan wheel 28, which rotates during operation, to be inserted into the suction nozzle 22 and not drag against the inner wall, In the region of the overlap between the fan wheel 28 and the suction nozzle 22, the inner diameter of the suction nozzle 22 is slightly enlarged so that a graduated cross-sectional geometry results in the end region of the suction nozzle 22.

This gradation leads to the fact that, with the exception of a comparatively small gap, the flow channel formed by the suction nozzle 22 and the annular nozzle of the fan wheel 28 has a uniform diameter. As a result, an optimal flow is possible and there is no turbulence on cross-sectional changes. This in turn ensures effective operation of the engine and a protection of the energy reserves of the battery or the battery. The gap in the axial and / or radial direction between the impeller 28 and the annular nozzle is preferably less than 2 mm, more preferably about 1 mm in size.

The drive shaft 31 of the motor 25 protrudes through the partition 30 therethrough. There she is stuck on an inside hollow bell-shaped receptacle, which simultaneously directs the flow radially outward. The fan wheel 28 has conveying blades 26, which are covered by an upper cover, so that there is a radially outwardly directed flow channel, which is surrounded by an annular region, from which in turn emerge through two lateral outlets, the air from the housing 1 can. In this annular region are air guide elements 27 of the Carrier plate 30 is arranged. Also, these air guide elements 27 direct the exhaust air flow in the direction of the outlets and prevent energy-consuming back pressure by a flow backlog.

FIG. 20 shows a further application of the suction device according to the invention. An advantage of the replaceable suction nozzle 4 is that the device can be adapted to different purposes. FIG. 20 shows the use as a vacuum cleaner, here instead of the suction nozzle 4, a Staubsaugdüse 29 is used. This has a smaller housing and can thus selectively provide a higher suction vacuum available. Since the attachment via the locking element 10 and the locking element receptacle 14 is identical to the suction nozzle 4, the two nozzles can be used alternatively to each other.

Optionally, a modification depending on the intended use of the vacuum cleaner can be made in the suction container 2, although usually a multifunctional training will be preferred, which requires no changes in the suction container 2. A possible modification could be that over the suction nozzle 22, a grid is placed in the manner of a vacuum cleaner bag. Also, a cylindrical, dimensionally stable wire mesh with a small mesh size or a similar designed plastic part can be used here. Another conceivable alternative is that the entire suction nozzle 22 is replaced by a cylindrical, closed at the front except for any air inlet holes to form a vacuum cleaner with a rotating filter. This porous and air but not dust-permeable component can even be firmly connected to the fan 28, so that sets a rotation of the component by the drive of the fan wheel. This rotating component can then be used as a filterless retention device for dust and foreign bodies.

In the Figures 21-23 possible configurations of the circuit breaker 22 are shown as an alternative to a uniform switch.

FIG. 21 shows a locking element receptacle 14, which has two power switches 20. These two power switches 20 have the meaning that, with different suction nozzles 4, the anti-tilt flange 12 can have a different length and / or the pressure range for actuating the body at different points Circuit breaker 20 has. Thus, a suction nozzle 4 actuate the front circuit breaker 20, as it is in FIG. 21 is shown. Another, in FIG. 22 illustrated suction nozzle 4 would then depress the rear circuit breaker 20. In this embodiment, the Kippschutzflansch 12 at the position of the front circuit breaker 20 has a recess, so that accidental operation of the front circuit breaker 20 is avoided.

In FIG. 23 is the further use of the two power switches 20 shown. Here, a Kippschutzflansch 12 can actuate both circuit breakers 20 successively in dependence of the pivot angle. As a result, first of all, at a first swivel angle, one of the two power switches 20 comes into contact with the anti-tilt flange 12 and is pressed down by it. An increase in the pivot angle then brings the Kippschutzflansch 12 with the second circuit breaker 20 into contact and thus also actuates this second circuit breaker 20. In this way, the user can turn on the pressure on the suction nozzle 4 in two stages the engine. By appropriate shaping of the contact region of Kippschutzflansches 12 and / or the sensing surface of the circuit breaker 20, the angle can be set at which the respective switch is actuated.

Basically, it is sufficient for actuating the circuit breaker 20, if on one side of the suction nozzle 4, the locking element 10 and the corresponding locking element receptacle 14 with the components of the circuit breaker 20 and the pressure surface are provided for its operation. This fact can be used to provide 4 different switches for different suction nozzles. Thus, for example, the suction nozzle 4 with integrated Abziehlippe 5 actuate a circuit breaker of the right locking element receptacle 14 for collecting and absorbing liquids.

If the suction device also has a circuit breaker 20 on the left-hand side of the latching element receptacle 14 present there, then it can then be actuated, for example, by another suction nozzle, for example the vacuum suction nozzle 29. It can also be provided in particular that the left side is designed so that the power switch 20 is actuated independently of the swivel angle, since it usually does not have direct contact with a pure vacuum cleaner operation between the surface to be sucked and the suction nozzle 4. For this reason, it may be appropriate that the Staubsaugdüse 29 has contact means on a latching element, which are designed so that they actuate the circuit breaker 20 on the corresponding side during insertion of the Staubsaugdüse 29 regardless of the tilt angle. On the opposite side then provided there locking element receptacle 14 may also have a circuit breaker. The suction nozzle 4 then has the above-described, pivoting angle-dependent contact means on this page, so that they then actuate the corresponding power switch 20 after insertion into the nozzle holder 6 only after the pivoting of the suction nozzle 4.

In one embodiment of the invention, the contact means exert a compressive force on a circuit breaker 20 in the form of a pressure switch. Alternatively, the contact means may also be electrical contacts bridging two adjacent contacts of the circuit breaker 20. In this case, then the contact means on the locking element 10 are part of the circuit breaker 20th

From the circuit breaker 20 lines lead to the contacts 19 on the adapter part 13 or on the nozzle holder 6. About these contacts 19, the circuit breaker 20 are then connected to the electronics of the device.

The individual features of preferred embodiments described above relate to the interchangeability of the suction nozzle 4 and the vacuum cleaner nozzle 29. Basically, this feature can be used in conjunction with all portable devices. It does not matter if it is a pure vacuum cleaner or a liquid vacuum cleaner or a combination.

Basically, this contact can be used without interchangeability of the suction nozzle 4 or vacuum nozzle 29, but at fixedly mounted in the nozzle holder 6 suction nozzle 4 and the Staubsaugdüse 29 become.

Another feature complex relates to the storage of the motor 25 and the flow optimization via the drive unit. This concerns in particular the fan These features are basically without an interchangeable suction nozzle 4 or Staubsaugdüse 29 and without the power circuit on the contacting by means of the locking elements used.

In summary, however, results in an optimized suction flow through the improved arrangement of the drive unit in conjunction with a flow-optimized, replaceable mounting of the suction nozzle 4 and Staubsaugdüse 29th

LIST OF REFERENCE NUMBERS

1

casing

2

Sauggutbehälter

3

Handle

4

suction nozzle

5

squeegee

6

Injectors

7

handle seat

8th

separating region

9

emptying opening

10

locking element

11

Nozzle outlet mouth

12

Kippschutzflansch

13

adapter part

14

Rest element receptacle

15

mounting boss

16

solvent support

17

Connecting piece for receiving the nozzle connection mouth 11

18

On / off switch

19

Contact

20

breakers

21

intake

22

suction

23

separating means

24

Splash guard

25

engine

26

conveying blades

27

Air conduit

28

fan

29

Staubsaugdüse

30

support plate

31

drive shaft

Claims (15)

1. A portable vacuum appliance with replaceable suction nozzle (4) and with a housing (1), a suction-product container (2) and a suction unit for generating a suction flow, which provides a vacuum pressure disposed in the suction nozzle (4), and with separating means which are provided in a separating region (8) of the housing and which can subdivide the suction flow drawn through the suction nozzle into a waste-air flow flowing out of the suction appliance and suction product in the form of particles and/or liquid constituents, wherein the separated particles or liquid constituents are collected in the suction-product container (2), and wherein the suction nozzle (4) can be plug-connected in a detachable and replaceable manner with a nozzle-connection mouth (11) to form a plug-in connection into a connector (17) arranged in the housing (1) or in an adapter part (13) arranged in the housing (1) for the retention of the front part of the nozzle-connection mouth (11), characterised in that the plug-in connection is designed in such a manner that the suction nozzle (4) is held in a rotatable manner at least about an axis of rotation, wherein the plug-in connection is formed by at least one latch element (10) engaging in a latch-element recess (14) when the suction nozzle (4) is plugged in, and the latch-element recess (14) and the latch element (10) are constituted in such a manner that the engaged latch element (10) is held in the latch-element recess (14) in a rotatable manner about the axis of rotation.
2. The portable suction appliance with replaceable suction nozzle (4) according to claim 1, characterised in that two latch elements (10) arranged on opposite sides of the flow channel formed by the nozzle connection mouth (11) and the connector (17) are provided, which are held in a rotatable manner in corresponding bearings of the latch-element recess (14).
3. The portable suction appliance with replaceable suction nozzle (4) according to the preceding claim, characterised in that the latch elements (10) are formed from components which are cylindrical at least in portions, wherein the latch-element recess (14) is formed from two clamping jaws contacting one another in a resilient manner, which comprise a threading-in region opening to the outside and a clamping region adjoining the latter with an internally rounded wall region for the at least partial surface contact against the cylindrical components.
4. The portable suction appliance with replaceable suction nozzle (4) according to the preceding claim, characterised in that at least one of the latch elements (10) comprises a tilt-protection flange (12) extending beyond the internally rounded wall region, in each case between an internal portion of the clamping jaws in the form of a rod-like or pin-like extension, wherein the internal portions of the clamping jaws comprise a distance from one another, such that a distance remains between the internal portions and the tilt-protection flange (12), so that the latch elements (10) are rotatable between two stops against which the tilt-protection flange (12) butts respectively against one of the clamping jaws.
5. The portable suction appliance with replaceable suction nozzle (4) according to one of the preceding claims, characterised in that at least one latch element (10) and an associated latch-element recess (14) provide contacts for the formation of a power switch (20), which are constituted in such a manner, that, with a pre-set pivoting angle of the suction nozzle, a switching pulse is generated in order to switch on or to increase the power of the suction unit.
6. The portable suction appliance with replaceable suction nozzle (4) according to claim 4 in conjunction with claim 5, characterised in that, the contacts are provided opposite to one another on at least one of the internal portions of the clamping jaws and at least one tilt-protection flange (12) cooperating with this internal portion.
7. The portable suction appliance with replaceable suction nozzle (4) according to one of the preceding claims, characterised in that the plug-in connection comprises centring means which are constituted in such a manner that the suction nozzle (4) can be inserted into the connector (17) in order to retain the nozzle-connection mouth (11) only in one or two rotational orientations.
8. The portable suction appliance with replaceable suction nozzle (4) according to the preceding claim, characterised in that the nozzle-connection mouth (11) and the connector (17) are constituted with a non-round, especially oval, cross section for the retention of the nozzle-connection mouth (11).
9. The portable suction appliance with replaceable suction nozzle (4) according to one of the preceding claims, characterised in that connectors (17) for the retention of the nozzle-connection mouth (11) and/or the nozzle-connection mouth (11) are made from an elastic material, especially from silicon.
10. The portable suction appliance with replaceable suction nozzle (4) according to one of the preceding claims, characterised in that the latch-element recess (14) is arranged in the adapter part (13), wherein the adapter part (13) is attached to the housing (1) or to the suction-product container (2), and the connector (17) for the retention of the nozzle-connection mouth (11) is arranged in an intake connector (22) leading to the separating region (8) arranged inside the housing (1), especially in the suction-product container (2), which passes through the adapter part (13).
11. The portable suction appliance with replaceable suction nozzle (4) according to one of the preceding claims, characterised in that the suction unit is formed by a motor (25) and a fan wheel (28) driven by the motor (25), wherein the fan wheel (28) comprises conveying paddles (26) for the lateral deflection of the airflow drawn out of the suction-product container (2) via an outlet connector (22).
12. The portable suction appliance with replaceable suction nozzle (4) according to the preceding claim, characterised in that the motor (25) is arranged on an air guide element (27), which is formed by a carrier plate (30), which is arranged between the motor (25) and the outlet connector (22), wherein the fan wheel (28) is arranged, viewed from the suction-product container (2), behind the carrier plate (30), and the motor (25) passes through the carrier plate (30) or a sealed housing portion with a driveshaft (31) in order to drive the fan wheel (28).
13. The portable suction appliance with replaceable suction nozzle (4) according to one of the two preceding claims, characterised in that the suction-product container (2) comprises a rear opening for the plugging in of the suction unit and is connected in a detachable manner to the housing (1), wherein the outlet connector (22) is arranged rigidly in the suction-product container (2), and the fan wheel (28) or the carrier plate (30) comprise a cylindrical shoulder opening and are constituted in such a manner that the suction unit is plugged onto the outlet connector (22) in a sealing manner when plugged into the suction-product container (2).
14. The portable suction appliance with replaceable suction nozzle (4) according to the preceding claim, characterised in that the fan wheel (28) or the carrier plate (30) comprise a peripheral groove, in which the edge of the outlet connector (22) engages after the suction unit is plugged onto the suction-product container (2).
15. The portable suction appliance with replaceable suction nozzle (4) according to the preceding claim, characterised in that two power switches (20) for controlling the power of the motor are provided, wherein the latch elements (10) of each of the suction nozzles (2) are constituted in such a manner that they can each cooperate with one of two contact positions of the latch-element recess (14), and the motor control is constituted in such a manner that a different motor power is set dependent upon which contacts are closed.

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