EP2923624A2 - Dust filter bag for a vacuum cleaner and assembly of a dust filter bag in a vacuum cleaner - Google Patents

Abstract

The invention relates firstly to a dust filter bag (4) for a vacuum cleaner (1), in particular an electric motor operated vacuum cleaner (1), optionally also a vacuum cleaner (1) in the form of an automatically movable floor cleaning appliance, with a holding plate (11) on which a dust bag (12) is fixed, and which has a preferably closable entry opening (18) for in a substantially perpendicular to an opening surface of the entry opening (18) in an insertion direction flowing, dust-laden air, further upstream against the entry direction of the dust-laden air upstream to a mounting surface (22) of the dust bag (4) on the holding plate (11) is formed a lower engagement portion (24) of the holding plate (11). For further development of the dust filter bag, it is proposed that the sub-gripping section (24) overlap in a projection direction corresponding to the entry direction to a part (23) of the holding plate (11) forming or merging into the attachment surface (22), wherein between the lower gripping section (24 ) and the part (23) of the holding plate (11) an engagement space (25) remains. The invention further relates to the arrangement of a dust filter bag (4) with a holding plate (11) and a dust bag (12) attached to the holding plate (11) in a vacuum cleaner (1).

Description

The invention relates first to a dust filter bag for a vacuum cleaner, in particular an electric motor operated vacuum cleaner, possibly also a vacuum cleaner in the form of an automatically movable floor cleaning device, with a holding plate to which a dust bag is attached, and which is a preferably closable entry opening for in a substantially vertical to an opening surface of the entry opening in an entry direction flowing, dust-laden air, further upstream against the entry direction of the dust-laden air to a mounting surface of the dust bag on the holding plate, a lower engagement portion of the holding plate is formed.

The invention further relates to an arrangement of a dust filter bag with a holding plate and a dust bag attached to the holding plate in a vacuum cleaner, in particular in an electric motor operated vacuum cleaner, possibly also in a vacuum cleaner in the form of an automatically movable floor cleaning device, wherein the holding plate a preferably closable entry opening for in a dust-laden air flowing in a direction of entry substantially perpendicular to an opening surface of the entry opening, wherein furthermore the vacuum cleaner has a filter chamber for receiving the dust filter bag and a suction / blast nozzle to which an inserted dust filter bag is connected, wherein further the filter chamber with a for the removal and insertion of the dust filter bag pivotable closure cap is provided, which has a registration projection, wherein a closure of the closure lid only possible is when the registration tab interacts with an inserted dust filter bag.

The invention deals with various aspects. The insertion of a particular new, unused dust filter bag into a filter chamber of a vacuum cleaner, as more preferably the removal of a particular used dust filter bag from the filter bag chamber should be user-friendly feasible. In addition, the operation of the vacuum cleaner to be ensured with inserted dust filter bag.

With regard to the dust filter bag is this initially provided that the lower engagement portion in one of the entry direction corresponding projection is in coverage to a mounting surface forming or merging into this part of the holding plate, wherein between the lower engagement portion and the part of the holding plate remains an engagement space.

The engaging space formed on the retaining plate provides a favorable area for the user to grasp the dust filter bag when it is inserted into the filter chamber or when it is removed from the filter chamber. The engagement space is formed in a hygienically favorable area of the holding plate. The gripping of the holding plate, for example for transporting the filled dust filter bag, can thus take place correspondingly in a region distanced in the direction of entry.

Further, the engagement space with respect to a, the entry opening preferably centrally passing axis formed radially outwardly open, wherein in a cross section in which the attachment surface shown as a line, the engagement space by a radially outwardly open, U-shaped portion of the support plate is formed.

The U-limb assigned here to an inflow side is formed by the undergrip portion, while the opposite u-limb passes through the surface forming the attachment surface or merging into the attachment surface and is formed with respect to the axis of the entry opening radially outside of the mounting surface subsequent part of the holding plate. These U-legs preferably run parallel to each other. Also, an acute angle between these U-legs of 1 to 30 °, preferably set 1 to 10 °, wherein the engagement space can expand both from radially inward to radially outward and from radially outward to radially inward.

The opening area of the entry opening preferably forms in the sealing area cooperating with a flap or the like in the closed position of the entry opening. Thus, the entry opening is preferably given in the formed in the interaction region of the flap and retaining plate sealing plane.

The entry direction can also be equated with a, a center line of the vacuum cleaner side suction / Blasstutzens continuing, the inflow opening centrally through and extending into the dust bag straights. The shutter is disregarded for this consideration. The actual entry direction, taking into account also the influence of the flow through the closure flap, is approximated thereto, but not rectilinear.

The straight line representing the entry direction extends with respect to a section through the entry opening, in which the straight line - as well as the sealing plane - represent lines substantially perpendicular to the sealing plane, preferably an acute angle between 30 and 90 °, in particular 60 to Including 90 °.

The engagement space of the holding plate is further used in connection with the arrangement of the dust filter bag in the vacuum cleaner, that in the closed position of the closure cap of the registration projection in the im Cross section U-shaped, (also) can retract open in the direction of the registration projection open engagement space.

An registration-dependent positioning of the dust filter bag in the filter chamber is ensured via the registration projection in cooperation with the engagement space. In addition, the interaction ensures that a dust filter bag is inserted in the filter chamber. Preferably, in the absence of a dust filter bag, and thus, when not interacting with an engagement space of a retaining plate, the registration projection abuts against a region of the filter chamber, so that closing of the filter chamber is not possible in a preferred embodiment in this situation.

Also, if necessary, additional retention of the dust filter bag in the filter chamber can be achieved via the registration projection retracted into the engagement space. In addition, in a preferred embodiment, the registration projection acts on the holding plate in such a way that it is pressed in the region of the entry opening sealing against the vacuum cleaner side suction / blowing clip.

Relative to a central axis of the entry opening, which central axis is a central point in a plan view of the entry opening, the underreaching section is in the projecting direction along the entry direction in at least predominant coverage to an at least radially outwardly outside a region of adhesion of the anther on the holding plate. The result is a spacing of the dust bag to the under gripping portion, so that the engagement space remains unaffected by the dust bag, regardless of the degree of filling of the dust bag.

This also makes it possible to utilize the engagement space for the hygienically favorable detection of the dust filter bag, especially when removing it from the filter chamber.

With respect to the central axis of the entry opening radially outside the adhesion of the dust bag to the support plate preferably extends a portion of the holding plate further in the mounting plane, for supporting the dust bag in particular in an overhead arrangement thereof in the filter chamber, in which the dust bag above the Retaining plate extends.

In a preferred embodiment, the distance of the lower gripping section to the mounting surface or to the merging into the mounting surface part of the holding plate changes in the radial direction and / or in the circumferential direction, this in particular according to divergent arrangement of lower gripping portion and merging into the mounting surface part of the holding plate. Thus, the mutually facing surfaces of under gripping section and this spaced part of the holding plate close an acute angle of up to 30 °, more preferably 5 to 15 °.

The mounting surface of the retaining plate extends overall in a plane which, with a plane in which extends the lower engagement portion, in a cross section in which these planes represent as lines, an acute angle of up to 30 °, preferably 5 to 15 ° includes.

The undergrip portion is preferably formed only over part of the circumference. Thus, the lower engagement section preferably extends over one tenth to one fifth of the circumference of the retaining plate in the region of the lower engagement portion receiving level.

Relative to a central axis of the entry opening, two opposing undergripping sections are preferably formed, for the corresponding formation of two engagement spaces. These are detectable by respective registration projections of the vacuum cleaner.

The registration projection is preferably pivotable about a pivot axis, wherein the registration projection is moved in the retracted position about the pivot axis. In the position not influenced by the holding plate or by the engagement space, the registration projection is preferably spring-loaded displaced into a blocking basic position, in which position in the absence of holding plate or missing dust filter bag of the registration projection against a portion of the filter chamber or the vacuum cleaner blocking. Only a retraction of the registration projection in the associated engagement space of an inserted retaining plate causes the pivotal displacement of the registration projection in a, the closing of the filter chamber permitting position.

The registration projection moves in a retraction direction transversely to the extension of the lower gripping portion in the engagement space. In a substantially U-shaped cross-sectional configuration of the engagement space, a retraction of the registration projection into the engagement space preferably takes place transversely to the U-shaped cross section.

In the course of the interaction of the registration projection with the holding plate when closing the closure cap, the registration projection ensures a defined positioning of a holding plate seal against the suction / blowing nozzle or a bottom surface of the filter chamber. The registration projection loads here, as well as preferably in the final closed position of the closure lid, the holding plate such that its Sealing area, for example in the form of a, a sealing lip having annular collar, urged into the sealing seat and held in this position.

Preferably, a barrier formation is provided in the filter chamber. This cooperates with an assignable registration projection when attempting to move the closure lid into the closed position when the dust filter bag is not inserted or not properly inserted. The registration projection is not pivoted in this case by retracting into the engagement space, but meets against the further pivoting of the closure cap hindering blocking formation.

The barrier formation may be a rib or a projection. A barrier pocket into which the registration projection with a partial area dips is preferred.

Preferably, two registration projections are provided. These are preferably each associated with a Sperrausbildung.

The registration projections are preferably supported pivotably independently of each other on the closure lid. The pivotal shift of a registration advantage does not necessarily lead to a relocation of the other registration advantage based solely on its movement.

The holding plate is thus preferably displaceable by means of the one or more registration projections in the sealing seat and / or fixable in its sealing seat.

With regard to the disclosure, the ranges or value ranges or multiple ranges given above and below also include all intermediate values, in particular in 1/10 increments of the respective dimension, if appropriate also dimensionless. For example, the indication 1 to 30 ° also includes the disclosure of 1.1 to 30 °, 1 to 29.9 °, 4.2 to 21.7 °, etc., the disclosure of up to 30 and the disclosure of up to 29.9 °, up to 17.4 °, etc., the disclosure of 30 to 90 °, also the disclosure of 30 to 89.9 °, 30.1 to 90 °, 37.4 to 58.7 °, the disclosure of 1/10 to 1/5, also the disclosure of 10/100 to 19/100, 11/100 to 20/100, 14/100 to 18/100 etc. On the one hand, this disclosure can be used to narrow down a stated range limit from below and / or above, alternatively or additionally, however, to the disclosure of one or more singular values from a respective specified range.

Fig. 1

in perspektivischer Darstellung einen Staubsauger in Form eines handgeführten Elektro-Staubsaugers;

Fig. 2

in teils geschnittener, perspektivischer Darstellung den Bereich einer Filterkammer des Staubsaugers mit einem, Registrierungsvorsprünge aufweisenden Verschlussdeckel, eine Sperrstellung bei fehlendem Staubfilterbeutel betreffend;

Fig. 3

eine weitere teils geschnittene, perspektivische Darstellung der Filterkammer bei geöffnetem Verschlussdeckel und eingesetztem Staubfilterbeutel;

Fig. 4

einen Vertikalschnitt durch die Anordnung gemäß Figur 3;

Fig. 5

in weiterer perspektivischer, teils geschnittener Darstellung den Bereich der Filterkammer, eine Zwischenstellung im Zuge des Schließvorganges des Verschlussdeckels betreffend;

Fig. 6

die Schließstellung des Verschlussdeckels;

Fig. 7

den Schnitt gemäß dem Bereich VII in Figur 6;

Fig. 8

die Halteplatte des Staubfilterbeutels in perspektivischer Darstellung;

Fig. 9

die Halteplatte in Ansicht gemäß Pfeil IX in Figur 8;

Fig. 10

die Ansicht gegen die Halteplatte gemäß dem Pfeil X in Figur 8;

Fig. 11

eine weitere perspektivische Darstellung der Halteplatte mit Sicht auf eine Anschlussseite desselben;

Fig. 12

die Draufsicht auf die Halteplatte;

Fig. 13

die Unteransicht gegen die Halteplatte;

Fig. 14

die Ansicht gemäß Pfeil XIV in Figur 10;

Fig. 15

eine der Figur 3 entsprechende Darstellung, eine alternative Ausführungsform der Halteplatte betreffend;

Fig. 16

eine Ausführungsform des Staubfilterbeutels in Seitenansicht;

Fig. 17

den Staubfilterbeutel gemäß Figur 16 im in die Filterkammer eingesetzten Zustand, die Verschlussstellung des Verschlussdeckels betreffend;

Fig. 18

eine der Figur 17 entsprechende Darstellung, eine Sperrstellung des Verschlussdeckels bei nicht eingelegtem Staubfilterbeutel betreffend.

The invention will be explained with reference to the accompanying drawing, which illustrates only one embodiment. On the drawing shows:

Fig. 1

in perspective view of a vacuum cleaner in the form of a hand-held electric vacuum cleaner;

Fig. 2

in a partially sectioned, perspective view of the area of a filter chamber of the vacuum cleaner with a registration projections having closure cap, a blocking position in the absence of dust filter bag regarding;

Fig. 3

a further partially cut, perspective view of the filter chamber with the lid open and inserted dust filter bag;

Fig. 4

a vertical section through the arrangement according to FIG. 3 ;

Fig. 5

in a further perspective, partially cut representation of the area of the filter chamber, an intermediate position in the course of the closing operation of the closure cover concerning;

Fig. 6

the closed position of the closure cap;

Fig. 7

the section according to the area VII in FIG. 6 ;

Fig. 8

the holding plate of the dust filter bag in perspective view;

Fig. 9

the holding plate in view according to arrow IX in FIG. 8 ;

Fig. 10

the view against the retaining plate according to the arrow X in FIG. 8 ;

Fig. 11

a further perspective view of the holding plate with a view of a connection side thereof;

Fig. 12

the top view of the holding plate;

Fig. 13

the bottom view against the retaining plate;

Fig. 14

the view according to arrow XIV in FIG. 10 ;

Fig. 15

one of the FIG. 3 corresponding representation concerning an alternative embodiment of the holding plate;

Fig. 16

an embodiment of the dust filter bag in side view;

Fig. 17

the dust filter bag according to FIG. 16 in the state inserted into the filter chamber, concerning the closed position of the closure lid;

Fig. 18

one of the FIG. 17 corresponding representation, concerning a blocking position of the closure lid with not inserted dust filter bag.

Shown and described is first with reference to FIG. 1 a vacuum cleaner 1 in the manner of a stalk-guided electric hand-held vacuum cleaner with a, not shown, motor-blower unit-containing base housing 2 to which an openable filter chamber 3 is connected to a dust filter bag 4.

To guide the vacuum cleaner 1, a stem 5 is attached to the base housing 2. This has at the end a handle 6, which is provided with a switch 7 for electrical commissioning and for controlling the vacuum cleaner 1. The electrical supply via an electric cable 8, which enters the handle 6.

In the illustrated embodiment, soil tillage takes place via a floor nozzle 9. The latter is fluidically and optionally also electrically connected via a coupling 10, not shown in detail, to the base housing 2 and the motor-blower unit arranged therein.

In the filter chamber 3, the dust filter bag 4 is held in the operation of the vacuum cleaner 1. The dust filter bag 4 has a dust bag 12 attached to a holding plate 11. The dust bag 12 is preferably made of a nonwoven.

To expose the dust filter bag 4, in particular to allow it to be changed, the filter chamber 3 can be opened. For this purpose, a part of the filter chamber 3 is formed as a flap-like closure lid 13, which is pivotable about a pivot axis x relative to the fixed part of the filter chamber 3.

In FIG. 2 the closure lid 13 is shown in a blocking position in the course of a lid closing movement.

In the filter chamber 3, a suction passage opening 14 is formed, is entered via which sucked in the operating state dirt in the dust filter bag 4 located in the filter chamber 3. Depending on the configuration of the vacuum cleaner 1 in detail, the dust can be blown into the dust filter 4 or sucked.

The filter chamber 3 is preferably one which, when the vacuum cleaner 1 is used, is oriented almost vertically or at an acute angle with regard to its longitudinal extension, which is here addressed in the direction of the visible bottom surface 16 to the overlying, not shown further surface can be arranged running vertically.

On the inside of the closure lid 13 registration projections 15 are arranged. Preferably, two registration projections 15 spaced apart from one another in the direction of extension of the pivot axis x are provided.

Each registration lead 15 can, as well as from FIG. 2 results, be arranged on the inside of the closure cap 13. In this case, each registration projection 15 is furthermore preferably arranged pivotably on the closure lid 13, wherein preferably a pivot axis y of each registration projection 15 extends parallel or at least approximately parallel to the pivot axis x of the closure lid 13.

The registration projections 15 are arranged independently of each other pivotable about the respective pivot axis. The pivoting of a registration lead 15 does not necessarily result in the pivoting of the other registration lead 15.

This can be achieved according to a single education of the registration projections 15. Also, the two registration projections 15 can be improved for Assembling be preformed, so for example, forming a connection between the registration projections, which connection allows the independent pivoting of the registration projections 15.

Each registration tab 15 may further be spring biased into a registration layer. For this purpose, each registration projection 15 is preferably associated with a spring, for example a leg spring, which loads the registration projection 15 into a preferably stop-limited pivot position, in which the registration projection 15 attempts to close the closure lid 13 without locking measures, into the bottom surface 16 the filter chamber 3 formed barrier formation occurs.

The barrier formation may be a shoulder or projection for possible coaction with the assignable registration projection 15. Preferably, the barrier formation is a barrier pocket 17 which extends below the bottom surface 16 and opens in the plane thereof (see also Figure 18).

Each registration projection 15 is assigned a blocking formation, in particular a blocking pocket 17.

In the FIG. 2 Accordingly, the registration position shown causes correspondingly that when the dust filter bag 4 is not inserted, the registration projection 15 cooperates in such a locking manner with the blocking pocket 17 that closure of the closure cover 13 is prevented. The improper closure of the filter chamber 3 can lead to an inhibition of the commissioning of the vacuum cleaner 1 using electrical and / or mechanical means.

In order to be able to displace the closure lid 13 into the closure position of the filter chamber 3, a deflection of the registration projections 15 is a prerequisite such that they are deflected against the spring force acting on them, so that immersion in the barrier pockets 17 is prevented.

This deflecting guidance of the registration projections 15 is given by the region of the holding plate 11 when the dust filter bag 4 is inserted.

In the illustrations, essentially only the holding plate 11 of the dust filter bag 4 is shown in each case. The attached to the support plate 11 dust bag 12 is merely indicated and according to demolition lines, as can be seen, not fully illustrated.

The holding plate 11 is formed lattice-like in the embodiment and preferably in the region of a mounting plane E for the dust bag 12. The holding plate 11 may be formed as a plastic injection molded part.

The holding plate 11 has an entry opening 18 which is surrounded by a projecting into the interior of the dust bag 12 collar 19. The entry opening 18 is closed by means of a flap-like closure part 20, in particular when the vacuum cleaner 1 is switched off, ie when the suction air flow is not applied. The closure part 20 is pivotable about an axis, which preferably extends parallel or at least approximately parallel to the pivot axis x of the closure lid 13, from an entry opening closure position into an open position, in which open position the closure part 20 is displaced in the direction of the interior of the bag (cf. For this FIG. 7 ).

The displacement of the closure member 20 in the open position takes place during operation of the vacuum cleaner 1, preferably alone, according to the suction air flow acting on this. It may also be provided a mechanically acting on the closure member 20 opening aid that supports the opening process.

As indicated by the dot-dash line 21, which is intended to represent an outer connection contour of the dust bag 12 with the holding plate 11, the holding plate 11 projects laterally, here in widthwise extension of the filter chamber 3, beyond the dust bag 12.

Preferably, the holding plate 11 is formed in its projecting beyond the dust bag 12 part 23 - preferably also the rest - lattice-like, so that a bottom support of the current during operation of the vacuum cleaner 1 filling dust bag 12 can be reached, this, the mounting plane E On the top side receiving part 23 of the holding plate 11 according to the lattice-like structuring allows a flow of depending on the operating mode of the vacuum cleaner 1 from the dust bag 12 sucked or blown out of the dust bag 12 air.

Associated with the respective grid-like structured part 23 of the holding plate 11, a lower gripping section 24 is formed on the holding plate 11. Preferably, two lower gripping portions 24 are integrally formed on one, the mounting surface 22 for the dust bag 12 simultaneously offering basic body of the holding plate 11, as well as the lattice-like structured parts 23rd

The sub-gripping sections are in a projection in the direction of an entry direction (see arrow a in FIG FIG. 7 ) of the flowing, dust-laden air in the dust bag 12 in at least partial overlap to the respectively associated, in the mounting surface 22 transition part 23 of the holding plate 11, wherein between the lower gripping portion 24 and the associated holding plate part 23 in the direction of entry a considered distance is provided ,

Each sub-gripping portion 24 extends substantially over one-fifth of the circumference of the holding plate 11, in particular the circumference of the base body of the holding plate 11. Furthermore, each sub-gripping portion 24 extends substantially from one approximately parallel to the hinge axis of the closure member 20 extending retaining plate edge Third to half of the length of the narrow side viewed transversely to the longitudinal extent of the holding plate 11 (compare dimension L in FIG. 10 ).

In a cross section through the portion of the holding plate 11 carrying the lower gripping portion 24, the lower gripping portion 24, the lattice-like structured portion 23 and the facing main body portion of the holding plate 11 form a U-shaped engaging space 25. This is formed on both sides in the longitudinal extent of the lower gripping portion 24, i. in extension of the shorter Halteplattenmaßes L, open, as well as to the side facing away from the holding plate base body, i. with respect to the entry opening 18 passing through the central axis z radially outward.

The mutually facing surfaces of lower gripping portion 24 (level F) and holding plate portion 23 (level E) include in the longitudinal extension of the lower gripping portion 24 an acute angle α of about 5 to 10 °, wherein the distance in the direction of the over Sub-gripping portion 24 also extending portion of the holding plate member 23 evenly reduced.

Accordingly, a directed in the direction of the holding plate portion 23 supporting surface of the lower gripping portion 24 extends in the aforementioned angle to the mounting surface 22 for the dust bag 12th

The oppositely arranged engaging openings 25 can be used in an advantageous manner for removal, in particular for transporting a dust filter bag 4, in particular filled dust filter bag 4, by the user carrying the holding plate 11, for example, with two fingers under engagement in the Eingriffräume 25. In this case, there is no contacting of the dust bag wall which, according to the filter-like structured holding plate part 23, remains at a distance from the engagement spaces 25.

The lower gripping portions 24 are further positioned so that they cover the chamber-side locking pockets 17 in the state of the dust filter bag 4 inserted into the filter chamber 3 (see FIG FIG. 5 ).

The holding plate 11 of the dust filter bag 4 is inserted into the filter chamber 3 such that a lower side, i. facing away from the collar 19, circumferential sealing collar 26 of the holding plate 11 encloses a device-side, projecting into the filter chamber 3 connection collar 27 of a suction / Blasstutzens 32. The suction / blowing nozzle 32 is completely formed at the end of a suction channel 28 guided through the base housing 2.

The sealing collar 26 of the holding plate 11 is further provided with a circumferential sealing lip 29, which preferably protrudes radially inward over a peripheral edge of the sealing collar 26 for cooperation with the connection collar 27.

Preferably, the holding plate 11 is seated after insertion of the dust filter bag 4 by the user first in a pre-assembly (see FIG. 4 ).

With movement of the closure cap 13 in the direction of the closed position of the filter chamber 3, the registration projections 15 enter the holding plate-side engagement spaces 25 under respective support on the support plate portion 23 facing support surface of the lower engagement portion 24. This causes a deflection of the registration projections 15 against the on this acting spring force.

With further pivotal displacement of the closure cap 13 into the closed position, the registration projections 15 slide over these contact surfaces of the undergripping sections 24, with further immersion in the respective engagement space 25.

The pivotal displacement of the registration projections 15 against the spring force is preferably stop limited (stop projection 35), so that with complete displacement of the closure lid 13 in the closed position according to FIG. 6 a force component acting on the under gripping portions 24 via the registration projections 15 for (further) displacement of the holding plate 11 in the sealing seat position according to FIG. 7 , The horizontal orientation of the sealing lip 29 changes in cooperation with the outer surface of the connection collar 27, on which outer surface the sealing lip 29 finally abuts bent.

The holding plate 11 is supported at the same time on the bottom surface 16.

A sealing of the connection collar 27 against the bottom surface 16 of the filter chamber is achieved by a section of the connection collar 27 acting from below against the filter chamber floor, which section, for example, is injection-molded as a 2K soft component or surrounds the connection collar 27 as a separately mounted seal.

For correct insertion of the holding plate 11, web-like orientation projections 30 are provided on the bottom surface 16 and engage in orientation slots 31 formed in the grid-like structured holding plate part 23.

Also, projections may be formed on the holding plate 11, which cooperate with recesses and / or recesses in the receiving space.

FIG. 15 shows an embodiment of the holding plate 11, in which the holding plate part 23 is formed closed flat (but this surface can be broken, for example, to save material), with a holding plate-rear handle portion 33 having a width which is greater than the distance of each other facing edge edges of the orientation projections 30 to each other. The further region of the holding plate part 23 is provided with a width corresponding to this distance or falling below this distance.

This also allows an (intuitive) positionally correct arrangement of the holding plate 11 in the filter chamber 3. A wrongly inserted rotated by 180 ° holding plate 11 can not be positioned because it slips forward due to the inclined bottom surface 16. In the correct insertion position, the holding plate 11 is supported with its rear grip region 33 on the orientation projections 30.

Instead of the bottom surface-side locking pockets 17 may also be provided above the bottom surface 16 protruding barrier ribs against which the registration projections 15 are blocking when not inserted dust filter bag 4. When the dust filter bag 4 is inserted, the barrier ribs are received by pockets or the like formed on the underside of the undergripping sections 24.

Also, the dust bag 12, for example, the production side in folds or compact as a roll be folded (see FIG. 16 ). The compact layer is held by one or more, in particular two banderoleartige strips of material 34 which comprise the dust bag 12 and the holding plate 11 at least partially. The material strip 34 may be a paper strip.

The material strip 34 spans the engagement space 25.

In the course of the closing operation of the closure cap 13, first the tip of the registration projection 15 lays against the surface of the material strip 34. With continued dipping of the registration projection 15 into the engagement space 25, the material strip 34 is overstretched until it finally tears as planned.

By the lid-closing movement, the fixing effect of the or the material strip 34 is released, so that in operation of the vacuum cleaner 1, the dust bag 12 - promoted by the negative pressure effect on the dust bag wall - its unfolded / unrolled final size and location assumes. <B> LIST OF REFERENCES: </ b> 1 vacuum cleaner 25 engaging space 2 Headers 26 sealing collar 3 filter chamber 27 connection collar 4 Vacuum Cleaner Bags 28 suction 5 stalk 29 sealing lip 6 handle 30 Orientation tab 7 switch 31 orientation slot 8th electric cable 32 Suction / blast socket 9 floor nozzle 33 Rear grip area 10 clutch 34 strips of material 11 Retaining plate 35 stop projection 12 anther 13 cap 14 Suction port a entry direction 15 registration advantage y swivel axis 16 floor area x swivel axis 17 locking pocket z central axis 18 entry opening 19 collar 20 closing part e mounting level 21 line F level 22 mounting surface L extension 23 part 24 Under gripping section α angle

Claims (11)

Dust filter bag (4) for a vacuum cleaner (1), in particular an electric motor operated vacuum cleaner (1), optionally also a vacuum cleaner (1) in the form of an automatically movable floor cleaning device, with a holding plate (11) to which a dust bag (12) is attached , and which has a preferably closable entry opening (18) for in a substantially perpendicular to an opening surface of the entry opening (18) in an entry direction (a) flowing, dust-laden air, further upstream against the entry direction (a) of the dust-laden air upstream to a Attachment surface (22) of the dust bag (4) on the holding plate (11) is formed a Untergreifabschnitt (24) of the holding plate (11), characterized in that the lower gripping portion (24) in one of the insertion direction (a) corresponding projection direction is in coverage a the mounting surface (22) forming or merging into this part (23) of the holding plate (11), wherein between the lower engagement portion (24) and the part (23) of the holding plate (11) an engagement space (25) remains. Dust filter bag according to claim 1, characterized in that with respect to a central axis (z) of the entry opening (18) of the sub-gripping portion (24) in the projection direction in overlap is at least radially outwardly outside a range of adhesion of the dust bag (12) on the holding plate (11) given part (23) of the holding plate (11). Dust filter bag according to one of the preceding claims, characterized in that changes in the radial direction and / or in the circumferential direction of the distance in the projection direction. Dust filter bag according to one of the preceding claims, characterized in that the mounting surface (22) of the holding plate (11) extends in total in a plane (E) with a plane (F), in which the lower engagement portion (24) extends in a cross section in which these planes are in a line, an acute angle (α) includes. Dust filter bag according to one of the preceding claims, characterized in that a lower gripping portion (24) is formed only over part of the circumference, and / or, preferably, that with respect to a central axis (z) of the entry opening (18) has two opposite lower gripping portions (24). are formed. Arrangement of a dust filter bag (4) with a holding plate (11) and a dust bag (12) attached to the holding plate (11) in a vacuum cleaner (1), in particular in a motor-driven vacuum cleaner (1), optionally also in a vacuum cleaner (1). in the form of an automatically movable floor cleaning appliance, wherein the holding plate (11) has a preferably closable entry opening (18) for in a substantially perpendicular to an opening surface of the entry opening (18) in a direction of entry (a) flowing, dust-laden air, wherein further the vacuum cleaner (1) has a filter chamber (3) for receiving the dust filter bag (4) and a suction / blowing nozzle (32) to which an inserted dust filter bag (4) is connected, wherein further the filter chamber (4) with a for removing and inserting the dust filter bag (4) pivotable closure lid (13) is provided, which has a registration projection (15), wherein a Closing the closure lid (13) is only possible if the registration projection (15) cooperates with an inserted dust filter bag (4), characterized in that in the closed position of the closure lid (13) of the registration projection (15) is retracted in a cross-sectionally U-shaped, in the direction of the registration projection (15) open engagement space (25) of the holding plate (11). Arrangement of a dust filter bag according to claim 6, characterized in that the registration projection (15) about a pivot axis (y) is pivotable and that the registration projection (15) in the retracted position about the pivot axis (y) is moved. Arrangement of a dust filter bag according to one of claims 6 or 7, characterized in that opposite to the entry direction (a) of the dust-laden air in the dust bag (12) upstream of a mounting surface (22) of the dust bag (12) on the holding plate (11) has a lower engagement section (24) of the holding plate (11) is formed, and / or, preferably, that a sub-gripping portion (24) is formed only over part of the circumference, and / or, preferably, relative to a central axis (z) of the entry opening (18 ) are formed opposite two gripping portions (24). Arrangement of a dust filter bag according to one of Claims 6 to 8, characterized in that the registration projection (15) retracts into the engagement space (25) transversely to the extension of the lower engagement section (24) in a retraction direction, and / or, preferably, that the retaining plate (11 ) is displaceable by means of the registration projection (15) into a sealing seat and / or can be fixed in its sealing seat. Arrangement of a dust filter bag according to any one of claims 6 to 9, characterized in that in the filter chamber (3) is provided a barrier formation, for cooperation with the registration projection (15) with not or not properly inserted dust filter bag (4), and / or, it is preferable that the barrier formation is formed as a lock pocket (17) adapted to receive a portion of the registration projection (15). Arrangement of a dust filter bag according to one of claims 6 to 10, characterized in that two registration projections (15) are provided, and / or, preferably, that the registration projections (15) are pivotable independently of each other, and / or, preferably, that each registration projection ( 15) is associated with a Sperrausbildung.

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