EP0893964B1 - Vacuum cleaner with a chamber for holding the dust bag - Google Patents

Abstract

The invention relates to a vacuum cleaner with a chamber (7) for holding a dust bag (20), said chamber (7) being closed by a swinging cover (T). An actuation projection (B) is arranged on the lower side of the swinging cover (T), is pivotably connected to the swinging cover (T) and also has a register projection (81) thereon (B) which moves into a register opening (83) of the chamber (7) after pivoting of the actuation projection (B). To produce a vacuum cleaner of said type which can be handled and operated more easily, in particular with respect to a facility allowing to know whether a dust bay is inserted, it is proposed that the register projection (81) is constructed at that end of the actuation projection (B) which is connected to the swinging cover (T), and extends substantially at right angles to a plane extension of the actuation projection (B).

Description

The invention relates to a vacuum cleaner with a Chamber for receiving a dust filter bag, the Chamber can be closed with a drag lid and on an operating projection on the underside of the drag cover is arranged, the actuating projection pivotally connected to the drag cover and is further on the actuating projection Registration tab is formed, which after the successful Pivoting of the actuating projection in enters a chamber registration opening.

A vacuum cleaner designed in this way is, for example WO-A-9 515 108. Here is a vacuum cleaner specified, the chamber for receiving a dust filter bag can be closed by a drag cover, whereby in the course of the closing process a drag cover side Actuation projection a closure element of the Dust filter bag shifted so that the suction opening a holding plate on the dust filter bag side becomes. Opening the filter bag chamber using of the drag cover causes via the actuation projection a relocation of the closure element in a closed position of the suction opening of the holding plate. There are also registration projections on the actuating projection trained which after swiveling the actuating projection in a registration opening enter the chamber. This is done via the Actuation projection a mechanical query whether a Dust filter bag is inserted in the chamber. Is if this is the case, the actuation projection and hence the registration projections arranged on it relocated in such a way that it Can open registration openings of the chamber. Just in this position, the Chamber possible. However, is not a dust filter bag inserted, the actuating projection does not find any Abutment for pivoting, with which the registration protrusions remain in a locked position. In this Locked position they support themselves in the course of the closing movement of the drag cover, for example on an outer edge of the Chamber, with a subsequent closing of the vacuum cleaner is counteracted. The order the registration tabs are made so that this approximately in the middle of a longitudinal extension of the actuating projection arranged at the longitudinal edges are, the registration openings between a Longitudinal edge of the dust filter bag or its holding plate and a housing wall of the chamber are.

In view of the state of the art described above becomes the object of the invention therein seen a vacuum cleaner of the type in question to specify which handling and functional, especially with regard to a query an inserted filter bag is improved.

This task is with Subject of claim 1 solved, with reference to it is that the registration advantage with the the drag cover connected end of the actuating projection is trained and approximately at right angles to Plane extension of the actuation projection extends.

As with the previously described The state of the art is also here Operating projection swiveling on the drag cover arranged, the pivot axis on that of Pivot axis of the drag cover opposite End of the drag cover is formed. According to the invention is the registration advantage in the area of the Pivot axis associated end of the actuating projection educated. This is the registration advantage in the area of the drag cover or the actuating projection arranged, which in the course of a closure the chamber is finally immersed in the chamber. In the closed position of the chamber, with inserted Filter bag, the actuating projection pivots in a position that is preferably parallel to the drag cover, the drag cover substantially parallel to The plane of the chamber opening is aligned. This means that according to the invention the registration tab approximately at right angles to the plane extension of the actuating projection extends that in a closed position the registration tab also at right angles to the plane extension the chamber opening is aligned. In in this position, the registration lead comes into a appropriately trained registration opening of the chamber on. If, however, no filter bag is inserted, in the course of the closing process, in which the drag cover is moved in the direction of the chamber opening, the Operating advantage due to the missing abutment not in the form of a holding plate on the filter bag side shifted, with which the registration advantage does not move to one perpendicular to the plane of the chamber opening directed position is moved. The registration advantage does not find the registration opening, but for example, against a chamber wall, with which a complete Close the chamber with the closing cover is counteracted. This can also cause the Dust filter chamber not sealing on the vacuum cleaner can be connected because the registration tab is preferred in the locking plane when not in place Reaches into the dust filter bag. The vacuum cleaner is in this position does not work.

In an inventive Further education of the subject of the invention it is provided that the registration projection has a longitudinal edge is assigned to the actuating projection. This in a preferred embodiment means that the Registration lead in a corner area between one Long edge and one can be swiveled with the drag cover connected narrow edge side of the actuating projection is arranged. An embodiment is preferred in which the registration opening between a narrow-sided Edge of the dust filter bag and one Housing wall of the chamber is formed. opposite the described prior art, in which the Registration opening between a longitudinal edge Edge of the dust filter bag and the housing wall the chamber is formed, the area becomes conscious here chosen to arrange the registration opening, in which the actuating projection arranged on the drag cover finally immersed. With a vacuum cleaner of the type in question, being in the chamber a dust filter bag with one, one essentially rectangular holding plate arranged is provided according to the invention that the holding plate one open to the narrow edge, has slot-like entry opening for receiving the Registration tab. According to the invention this design is not just the presence of one Dust filter bag, but also the correct position of the dust filter bag in the chamber. If the dust filter bag is inserted in the correct position, so the registration tab enters the side of the holding plate Entry opening. However, is the dust filter bag not inserted correctly in the chamber, see above the registration lead occurs in the course of the closing process against the surface of the holding plate, after which a Functional closing of the chamber is not possible is. Drag cover, actuation protrusion and registration protrusion remain in a locked position. It is also proposed that the registration lead has an entry sword for interaction with the entry opening of the dust filter bag. By this configuration is a double query for existence a dust filter bag and more appropriate Allows arrangement of the same in the chamber. The Registration tab as such appears correctly inserted dust filter bag into the one assigned to it Registration opening of the chamber, the entry sword of the registration lead takes place in the Entry opening of the dust filter bag or its holding plate. Because when closing, relatively high forces can occur, the registration lead must be stable be designed. According to the invention, this is a stiffening provided, which for functional reasons only in Direction can be aligned with the holding plate. An embodiment in which the registration projection has a T-shaped layout, whereby the T-stick is formed from the entry sword is. The T-stem is used to interact with the Entry opening of the dust filter bag. The T-cross leg serves as a registration advantage for interaction with the registration opening of the chamber. Conditionally through the T-shaped outline of the registration tab there is also a centering of the dust filter bag. In a preferred embodiment of the subject matter of the invention it is contemplated that two registration tabs are trained. One is preferred here Design in which the registration tabs in Corner areas between which can be swung out with the drag cover connected narrow edge and this Edge associated longitudinal edge edges are formed. As beneficial it turns out that in the chamber assigned to the Holding plate a vertical overflow Locking cam is formed, which when inserted Holding plate overlaps this on the top. Due this configuration makes the dust filter bag snap held in the chamber. In the course of inserting the Dust filter in the chamber causes the preferred a holding plate made of cardboard / paper material an evasive shift of the locking cam, after which successful insertion of the dust filter bag of the latching cam reaches behind the holding plate. The dust filter bag is then only willful against the effect the preferably resilient locking cam from the chamber removable. An embodiment is preferred for which with a substantially rectangular plan Chamber assigned to three corner areas formed locking cams are. It is also proposed that the Chamber has inner walls, inwardly projecting webs which the holding plate is supported. These bridges According to the invention extend at right angles to the chamber wall. The inserted dust filter bag is accordingly between the inner walls of the chamber and the Locking cams overlapping the retaining plate. Furthermore, it proves advantageous that the Drag cover protruding transversely to its longitudinal extent Spacer cams are formed, which with the inner wall the chamber cooperate. When inserted Dust filter bag and the correct arrangement of the same pivots, as already described, the drag cover preferably in a parallel to the plane extension of the Position aligned with the chamber opening. In this position act on the transverse to the longitudinal extent of the drag cover protruding distance cams the inner wall of the Chamber. This is particularly advantageous if the chamber made of a relatively unstable plastic material is made. With such unstable material properties can an increased vacuum during suction lead to a deformation of the chamber wall what a leak in the area of the closure level Vacuum cleaner would result. This is according to the invention counteracted by the distance cams which the Chamber wall always in its predetermined position hold regardless of the level of negative pressure. For this it is further proposed that the distance cams with downward facing locking projections for entering Indentations of the holding plate are formed. As it proves particularly advantageous that two pairs formed by two opposite distance cams are. This is due to this configuration an even support of the inner chamber wall reached by the distance cams. Furthermore, suggested that on the actuating projection Mount foot is formed, which is bent to the direction of extension of the actuating projection runs. This foot serves in the course of a Closing the chamber on a first touchdown the holding plate of the dust filter bag. Will continue The greatest share of power via this foot, which acts on the actuating projection, directly into the Holding plate directed. Without this measure, the total force on that through the actuation projection act on the closure element of the holding plate, which leads to functional impairments of the holding plate closing process would lead. This is according to the invention counteracted. On the closure element only the force necessary for the displacement acts, whereas the excess share of power directly over the foot in stable, non-sliding areas the holding plate. Is preferred here an embodiment in which the foot with a direction of extension of the actuating projection encloses an obtuse angle. E.g. can here an angle of approximately 120 ° should be selected. Will continue suggested that the foot be rigid to the Actuating projection holding plate is formed. This is particularly conceivable for training, at which the actuating projection is resilient is. Such a resilient actuation projection is on one pivotally arranged on the drag cover Plate attached. This swivel plate has the stiff foot.

The invention further relates to a dust filter bag with a holding plate for a vacuum cleaner the previously described Art, wherein the holding plate is a substantially rectangular Floor plan and has a suction opening, wherein further the suction opening a narrow-sided first End area of the holding plate is assigned.

Such one Dust filter bag with holding plate is in the unpublished German patent application of Applicant DE-A-196 02 547 described. To the generic dust filter bag to make handling and function safer, it is suggested that the first end area a slit-like, substantially perpendicular to one Edge edge of the first end area running entry opening for receiving a registration tab.

This entry opening is used according to the invention for taking up a registration tab one closing the dust filter bag chamber Drag cover or one connected to the latter Actuation projection. The entry opening serves as Orientation guide for an appropriate insertion of the Dust filter bag in the filter chamber. Can continue with this entry opening in cooperation with a A tab centering the holding plate respectively. An embodiment is preferred in which the entry opening parallel to a long side of the holding plate plan is aligned, the Entry opening in the area of the suction opening Narrow side is formed open to the edge. Will continue proposed that the entry opening in the depth direction the holding plate only partially penetrates it. An embodiment is preferred here which is the entry opening towards an exposed one Top of the holding plate is open, whereas towards the filter bag the entry opening a bottom formed by the holding plate having. E.g. the design can be chosen in this way be that with a holding plate, which consists of several There are layers of cardboard / paper material, the drive-in opening only part of the layers penetrated. Prefers becomes a holding plate, which consists of four layers of cardboard / paper material. Here, according to the invention suggested that the entry opening only three layers interspersed. The fourth layer forms one Bottom of the opening and is the dust filter bag bottom layer facing. Through this configuration it is possible, despite training a Drive-in opening, the filter bag along the edge of the holding plate to stick, d. H. in a projection also in Area of the entry opening. In an advantageous Further development of the subject matter of the invention is proposed that the entry opening is assigned to a corner area of the holding plate floor plan is formed and that on the long edge of the mounting plate floor plan assigned a second entry opening to the same corner area is trained. One is preferred here Design in which this corner area of the Suction opening assigned to the narrow side. An embodiment in which in both corner areas of the suction opening Narrow side of the holding plate at least one slit-like, essentially perpendicular to the narrow edge extending entry opening is provided. Has proven particularly advantageous in terms of handling it is assigned to that on a longitudinal edge one corner area each for a pass-through opening for a location protrusion is formed while opposite the holding plate on the other longitudinal edge is closed to the extent. E.g. can here projections on the filter chamber side into the access openings immerse the holding plate, however only if the mounting plate or the Dust filter bag in the chamber. Will the holding plate or the dust filter bag is inserted incorrectly, kick the projections on the underside against the closed ones Areas of the longitudinal edge of the holding plate. The Dust filter bags are therefore not functional insertable. E.g. the training can be chosen that a pass-through opening on both sides of retaining plate projections is limited, the width of the Opening approximately 0.25 to three times the width of the corresponding protrusions, measured in Direction of the longitudinal edge of the holding plate. According to the invention it is intended that the opposite Retaining plate projection assigned to the narrow side A sloping flank towards the opposite narrow side has while towards the other Narrow side of the retaining plate projection is essentially one at right angles to the longitudinal edge Straight edge. The slope is therefore the the narrow side facing the suction opening Assigned narrow side and serves in a preferred Design as an alternative flank for a housing side Locking projection, which the holding plate in Installation position reaches behind the non-detachable position. The Straight edge of the retaining plate projection is that Narrow side of the holding plate assigned to the suction opening facing and corresponds in the installation position with the already mentioned location advantage. It is also proposed that opposite one along the longitudinal edge Another projection is arranged with a by the measure the opening width increased width. This lead is the closed counterpart to the access opening for the head start. As already mentioned, is the access opening through two retaining plate projections limited. The opposite lead is preferred on the outside edge accordingly the holding plate projection assigned to the opposite narrow side trained, but points in the middle no access opening. To be particularly advantageous it turns out that on a longitudinal edge the Projections assigned to corner regions symmetrically arranged a longitudinal center axis of the holding plate are. It proves to be further advantageous that over the length of the holding plate is essentially two each opposite indentations are formed. These indentations serve, for example, in the installed state of the Dust filter bag in a filter chamber of the better Removability of the dust filter bag. So are in Area of the indentations between the holding plate and the chamber inner wall shaped gripping openings, whereby the dust filter bag in the area of the holding plate long sides can be taken. Can continue the open areas thus formed between the holding plate and inner chamber wall as registration openings for a drag cover closing the filter chamber Registration tabs are used. According to the invention it is provided that the indentations are the central area assigned to the longitudinal edge of the holding plate are limited by protrusions which are between them form smaller indentations. Also in the area these smaller indentations, the holding plate in easiest way to remove the dust filter bag be recorded. Next are in the area of these indentations thus between the holding plate and the chamber inner wall open areas in which registration tabs can immerse. The holding plate side, projections delimiting the indentations also serve to support the holding plate in the dust filter bag chamber. An embodiment is preferred in which two on one longitudinal edge smaller indentations are formed, opposite one another to a small indentation of the other longitudinal edge. Accordingly, the one longitudinal edge has three Projections assigned to the center area on, opposite two projections on the other longitudinal edge. Finally it is intended that the two smaller indentations one longitudinal edge opposite each other the one that protrudes a small indentation are trained.

Fig. 1

einen erfindungsgemäßen Staubsauger mit einer Kammer zur Aufnahme eines Staubfilterbeutels in einer perspektivischen Darstellung;

Fig. 2

die Kammer zur Aufnahme des Staubfilterbeutels in einer um 180° zu einem Staubsaugergehäuse abgeschwenkten Stellung, mit strichpunktiert dargestellter 90°-Zwischenstellung;

Fig. 3

einen Längsschnitt durch die Kammer im Bereich der Kammeröffnung, bei eingelegtem Staubfilterbeutel und einen verschwenkbar an der Kammer angeordneten Schleppdeckel mit einem Betätigungsvorsprung;

Fig. 4

eine Herausvergrößerung aus Fig. 3, den Kupplungsbereich von Betätigungsvorsprung und einer Schlitzaufnahme eines halteplattenseitigen Verschlußelementes des Staubfilterbeutels zeigend;

Fig. 5

eine schematische Darstellung eines Registriervorsprunges des Betätigungsvorsprunges im Zuge eines Schließens der Filterbeutelkammer mittels des Schleppdeckels;

Fig. 6

eine der Fig. 5 entsprechende Darstellung, jedoch die Schließstellung betreffend;

Fig. 7

eine der Fig. 3 entsprechende Darstellung, jedoch ebenfalls die Schließstellung der Filterbeutelkammer betreffend;

Fig. 8

eine Draufsicht auf die Filterbeutelkammer bei eingelegtem Staubfilterbeutel und in Schließstellung verschwenktem Schleppdeckel;

Fig. 9

eine Ausschnittsvergrößerung gemäß dem Bereich IX-IX in Fig. 8;

Fig. 10

den Schnitt gemäß der Linie X-X in Fig. 8;

Fig. 11

eine Seitenansicht der Filterbeutelkammer in Schließstellung, partiell aufgebrochen;

Fig. 12

eine weitere Seitenansicht der Filterbeutelkammer, jedoch bei einem Versuch des Schließens durch den Schleppdeckel bei nicht eingelegtem Staubfilterbeutel;

Fig. 13

eine Detaildarstellung in einer Draufsicht auf die Staubfilterbeutelkammer, die Kollision zwischen einem Registriervorsprung und einer Kammerwandung darstellend;

Fig. 14

eine der Fig. 5 entsprechende Darstellung, jedoch die Kollisionsstellung gemäß Fig. 13 betreffend;

Fig. 15

eine Draufsicht auf den an einer Platte angeordneten Betätigungsvorsprung, in einer Einzeldarstellung;

Fig. 16

die Seitenansicht der den Betätigungsvorsprung aufweisenden Platte;

Fig. 17

den Staubfilterbeutel in einer Einzeldarstellung, in Draufsicht;

Fig. 18

den Längsschnitt gemäß der Linie XVIII-XVIII in Fig. 17;

Fig. 19

den Schnitt gemäß der Linie XIX-XIX in Fig. 17;

Fig. 20

eine Ausschnittsvergrößerung gemäß dem Bereich XX-XX in Fig. 18.

The invention is explained below with reference to the accompanying drawing, which, however, only represents an exemplary embodiment. Here shows:

Fig. 1

a vacuum cleaner according to the invention with a chamber for receiving a dust filter bag in a perspective view;

Fig. 2

the chamber for receiving the dust filter bag in a position pivoted through 180 ° to a vacuum cleaner housing, with a 90 ° intermediate position shown in broken lines;

Fig. 3

a longitudinal section through the chamber in the region of the chamber opening, with a dust filter bag inserted and a pivoting lid arranged on the chamber with an actuating projection;

Fig. 4

an enlargement of Figure 3, showing the coupling area of the actuating projection and a slot receptacle of a closure element of the dust filter bag on the holding plate side;

Fig. 5

a schematic representation of a registration projection of the actuating projection in the course of closing the filter bag chamber by means of the drag cover;

Fig. 6

a representation corresponding to FIG. 5, but relating to the closed position;

Fig. 7

a representation corresponding to FIG. 3, but also relating to the closed position of the filter bag chamber;

Fig. 8

a plan view of the filter bag chamber with the dust filter bag inserted and in the closed position pivoted drag cover;

Fig. 9

an enlarged detail according to the area IX-IX in Fig. 8;

Fig. 10

the section along the line XX in Fig. 8;

Fig. 11

a side view of the filter bag chamber in the closed position, partially broken away;

Fig. 12

a further side view of the filter bag chamber, but in an attempt to close by the drag cover with the dust filter bag not inserted;

Fig. 13

a detailed view in a plan view of the dust filter bag chamber, showing the collision between a registration projection and a chamber wall;

Fig. 14

a representation corresponding to FIG. 5, but relating to the collision position according to FIG. 13;

Fig. 15

a plan view of the actuating projection arranged on a plate, in a single representation;

Fig. 16

the side view of the plate having the actuating projection;

Fig. 17

the dust filter bag in a single view, in plan view;

Fig. 18

the longitudinal section along the line XVIII-XVIII in Fig. 17;

Fig. 19

the section along the line XIX-XIX in Fig. 17;

Fig. 20

an enlarged detail according to the area XX-XX in Fig. 18.

Is shown and described initially with reference to Fig. 1 is a handheld vacuum cleaner 1, which is essentially from a housing 2, in a boom 3 of the Housing 2 insertable device handle 4 with an end Handle 5 and one in the area of the handle 5 opening connecting line 6 is composed. To the Housing 2 is connected to a filter bag receiving chamber 7.

2 is a side view of the housing 2 and Filter chamber 7 a position pivoted by 180 ° Filter chamber shown to expose the same. It can be seen that the filter chamber 7 via a folding axis 8 pivotally attached to the vacuum cleaner housing 2 is.

The one shown in particular in FIG. 8 in a top view Filter chamber 7 has one essentially rectangular opening cross-section, the long sides 9 and 10 slightly convex and the narrow sides 11 and 12 are more convexly curved. Next is the long side 9 in a central area, the convex lines interrupting, slightly concave. This The area is provided with the reference number 13.

In the area of a narrow side 11 is on the filter chamber 7 on the outside of the housing an axle bracket 14 with on the front molded knuckles 15 arranged. Latter are corresponding to pivoting the filter chamber 7 in aligned knuckle receptacles of the housing 2 led. These stub axles are in two assigned to the end faces of the axle bracket 14 Pickup arms 16 arranged to form the folding axis 8th.

The housing 2 has one in the closed state of the Vacuum cleaner corresponding to the chamber opening Housing opening cross-section, which is the cross-section corresponds essentially to the chamber opening. In the closed 1 is the filter chamber 7 sealingly connected to the housing 2, one Rest protection is given, which by one, one Latch 17 having handle 18 and by a housing-side locking receptacle 19 is formed. Handle 18 and locking receptacle 19 are each in the area The narrow side of the filter chamber facing away from the folding axis 8 7 or housing 2 arranged (see. Fig. 2).

The filter chamber accommodating a dust filter bag 20 7 is in the form of a cassette-like, for example, in the spraying process manufactured, funnel-like plastic part formed, with a chamber opening 21 which substantially is limited by the chamber wall 22.

The dust filter bag 20 is in the filter chamber 7 insertable, with removal and insertion of the dust filter bag 20 takes place through the chamber opening 21. A dust filter bag 20 is preferably used here, which in the unpublished German Patent application DE-A-196 02 547 is described.

The dust filter bag 20 is essentially exposed one preferably made of a cardboard / paper material existing holding plate 23 and one at the bottom this holding plate 23, for example. Adhesive bonded, preferably dust bag 24 made of paper together.

The holding plate 23 is made up of four layers Layers of cardboard / paper material together. These layers 25 to 28 are glued together.

The outline shape of the one in FIGS. 17 to 20 in individual representations holding plate 23 shown is essentially long rectangular, one narrow-sided first end region 29 of the holding plate 23 and the holding plate 23, penetrating all four layers 25 to 28, in Floor plan circular suction opening 30 is formed.

On the underside of the lowest layer 28 is the dust bag 24 glued to the holding plate 23.

Between the lowest layer 28 and the one above it Layer 27 of the holding plate 23 is a rubber seal 31 composed. The latter is particularly in the area of Suction opening 30 is arranged and has a concentric here arranged to the suction opening 30 circular Opening 31 'to form a in the area of the suction opening 30 shaped, ring-shaped lip seal.

All four layers 25 to 28 are at least based on the outer contour is the same. Only that between the top layer 25 and the third layer 27 layer 26 is arranged as a spacing layer for the Layer 25 forming the ceiling and is used for formation of a space that is closed on all sides, in which one also preferably made of a cardboard / paper material manufactured closure element V slidably is inserted. The latter serves to close the Suction opening 30 before removing the dust filter bag 20 from the filter chamber 7.

The closure element V is essentially exposed a closure plate to close the suction opening 30 32 and one in the longitudinal extent of the holding plate 23 aligned slide handle 33 together. The latter is at the narrow end first region 29 opposite side of the closure plate 32 on this arranged.

Furthermore, the holding plate 23 has in its uppermost position 25 has a separate opening 34, which is in plan is elongated rectangular. How from 17, this separate opening 34 can be seen arranged in the middle of the layer 25 and gives the underlying Closure element V, in particular the area of Slider handle 33, partially free, which with a Form-fit recess 35 provided in the form of a slot is. This form-fitting recess 35 is a through opening formed, which in turn through this recess 35 the third layer 27 is visible.

Both the open and the closed position of the Closure element V is stop-limited.

As can be seen further, in particular from FIG. 17 the holding plate 23 in the first narrow end region 29 two slit-like, substantially vertical extending to the edge 36 of this first end region 29 Entry openings 37 on. These entry openings 37 only partially penetrate the holding plate 23 such that these are only the top three layers 25 to 27 enforce (see Fig. 19). So it is bottom layer 28 not cut free, which also in Area of the entry openings 37 on the underside of the layer 28 the dust bag 24 is glued can.

The two entry openings 37 are symmetrical a longitudinal axis of symmetry x of the holding plate 23, each assigned to a corner area 38 of the holding plate layout. The training is like that hit that an imaginary extension of the entry openings 37 - in the longitudinal extent of the holding plate 23 viewed - runs on both sides of the suction opening 30 or the edge of the opening affects. The in the longitudinal direction the holding plate 23 measured length of each, for Edge 36 towards the edge of the opening 37, is so dimensioned that one the front edges of the entry openings 37 connecting line, which is perpendicular to the axis of symmetry x of the holding plate 23 is aligned, based on the first narrow end region 29, in front of the suction opening 30 lies.

On a longitudinal edge 39 of the holding plate 23 is assigned a further entry opening 40 in the corner region 38 molded. The latter is in the form of an edge open, the holding plate 23 through all four layers 25 to 28 penetrating through opening 41 is formed. This Pass-through opening 41 is on both sides of holding plate projections 42 and 43 limited, the latter essentially perpendicular from the longitudinal edge 39 cantilever for the longitudinal extension of the holding plate 23.

The training is made so that the breadth of the Pass-through opening 41 approximately 0.25 to three times the Width of the adjacent projections 42 and 43 corresponds. In the embodiment shown the reach-through opening 41 is a longitudinal extension of the Holding plate 23 measured width a of about 7 mm opposite a width b of the adjacent protrusions of approx. 11 mm. The transverse to the longitudinal extension of the holding plate 23 measured depth of reach-through opening 41 corresponds to the cantilevered depth of the projections 42 and 43. In the embodiment shown here a dimension c of approx. 5 mm is selected.

Folding symmetry to the axis x-x is on the opposite Along the longitudinal edge 44 a further projection 45 is arranged, which, like the projections 42 and 43, is free protrudes from the longitudinal edge area. This lead 45 has a substantially the contour of the Projection 43 of the opposite longitudinal edge 39 corresponding contour, the width of the projection 45 - measured in the longitudinal extent of the holding plate 23 - by the dimension a of the opening 41 opposite the projection 43 is enlarged. This means that the protrusion 45 has a width which is the addition the width a of the access opening 41 and the Width b of the projection 43 corresponds. The latitude of the projection 45 is marked with d. Out of this results in that the through opening 41 is symmetrical opposite area of the holding plate 23 is closed.

17 that the opposite one Narrow side 46 associated holding plate projection 43 has a sloping edge 47, while in Direction towards the narrow edge 36 of this retaining plate projection 43 a substantially at right angles to Longitudinal edge 39 has straight edge 48. The one opposite this projection 43 symmetrically Projection 45 of the longitudinal edge 44 is also with a sloping flank 49 facing the narrow side 46 and one facing the narrow side 36, likewise essentially at a right angle to the longitudinal edge 44 provided straight edge 50.

In the corner areas 51 and 52 of the opposite Narrow side 46 are on the longitudinal edges 39 and 44 more Projections 53 and 54 arranged. Here it is provided that a longitudinal edge 39 and 44 in the Projections assigned to corner regions symmetrically a longitudinal center axis y-y of the holding plate 23 are. Thus, the protrusion 54 corresponds to that before described projection 45 and that of the longitudinal edge 39 assigned projection 53 to that also described above Projection 42. The projection 53 limits one side symmetrical to the access opening 41, related to the longitudinal center axis y-y, formed second Pass-through opening 55, the latter only on one side is limited by the projection 53. The Andes Longitudinal edge edges 39 arranged, the corner regions 38 and 51 associated projections 42 and 53 are similar the projection 43 one the narrow edge edges 36 and 46 assigned inclined flank 56 and one of the opposite Narrow side facing, essentially rectangular to the longitudinal extent of the holding plate 23 extending straight edge 57.

Furthermore, the holding plate 23 has its length in each case two substantially opposite indentations 58 on. The latter are limited by the middle area associated with the retaining plate longitudinal edge edges 39 and 44 Projections 59 and 59 ', each essentially one have a trapezoidal layout. The hereby Indentations 58 formed are used in the Condition of the dust filter bag 20 in the filter chamber 7 as gripping openings for improved removal. Further these indentations 58 can also be used as registration openings can be used for registration tabs like this For example, from that addressed in the prior art WO-A-9 515 108 is known.

In the exemplary embodiment shown are on the longitudinal edge 44 three equally spaced Projections arranged symmetrically to the longitudinal center axis y-y 59 provided, whereas on the opposite Longitudinal edge 39 two, also symmetrical to Projections 59 'arranged along the longitudinal center axis y-y are. Accordingly, the three protrusions 59 form the longitudinal edge 44 between two smaller indentations 60 out. The projections 59 'of the longitudinal edge 39 also form smaller indentations between them 61, with the symmetrical design - a reference to the longitudinal center axis y-y- the smaller indentations 60 to the Indentation 61 limiting projections 59 'is given.

The dust filter bag 20 is thus in the filter chamber 7 inserted that the holding plate 23 of the chamber opening level is oriented facing, the holding plate 23 level to the opening cross-sectional level set back towards the chamber interior is positioned (see Fig. 3).

The dust filter bag 20 is supported with its trapezoidal shape Projections 59 and 59 'on the inner wall of the chamber integrally formed, inwardly projecting webs 62, which Crosspieces 62 are essentially perpendicular to the chamber wall 22 extend.

Through this design, the holding plate 23 in the Unfolded position of the device according to FIG. 2 not in the Slip in filter chamber 7.

Furthermore, the dust filter bag 20 is in the area of it Holding plate 23 clamped. For this purpose, the filter chamber 7 latching cams that can be overrun in the vertical direction 63, which when the holding plate 23 is inserted Reach over on the top, in the area of the inclined flanks 47 of the holding plate projections 43 and 45 (see Fig. 8).

To overflow the locking cams 63 are both below and Provided on the top with inclined surfaces 64 to avoid evasion the locking cams during insertion or one Take out the dust filter bag 20 through the holding plate 23 to achieve. The locking cams 63 can Dodge springy overflow. For this are the locking cams 63 via a spring element 65 with the Chamber wall 22 connected.

For correctly inserting the dust filter bag 20 are in the filter chamber 7 perpendicular to the chamber opening plane extension aligned projections 66 provided which when the dust filter bag is installed in the correct position 20 in the access openings described above 41 and 55 kick. If the dust filter bag 20 in tries to use a position rotated by 180 °, so the projections 66 meet the closed Regions of the projections 45 and 54 of the holding plate 23, with which the dust filter bag 20 does not function properly can be used.

The projections provide the user with an orientation aid given the dust filter bag 20 in the correct position to use.

The filter chamber 7 is essentially a T-lid can be closed, which is pivotable a boom projecting into the chamber opening 21 67 is attached. The pivot axis is with the Reference numeral 68 and is in the range of chamber-side handle 18 opposite narrow side 11 arranged.

The drag cover T is designed so that that this in a closed position of the filter chamber 7 according to FIG. 7 essentially completely in the Immerses chamber opening 21. This also means that in a coaxial position of the housing 2 and the filter chamber 7 of FIG. 1 of the drag cover T completely View is withdrawn.

In the free end area facing away from the pivot axis 68 the drag cover T has a suction port 69 which, in the pivoted position, the suction opening 30 passes through the holding plate 23 and in the dust filter bag 20 protrudes.

The suction nozzle 69 tapers to its free end out so that its insertion into the suction opening 30 practical centering effect.

Next is the suction port 69 with a valve flap 70 provided at its free end that a falling back of suction material, due to the falling position of the dust filter bag 20 in the operating position according to FIG. 1, prevented. It is a through Rib reinforced membrane, which on a mandrel 71 is simply riveted.

The edge of the free end area is on the Chamber 7 facing away from the top of the drag lid T a handle 90 is formed, which for opening the Chamber 7 is taken, after which a pivoting of the Drag cover T is done in the simplest way.

Next is that facing away from the pivot axis 68 a free end region on the drag cover T a plate 72 arranged pivotably via a hinge 73. On the A spreading spring 74 is arranged on the axis of the hinge 73, which is looped over one end on the Bottom of the drag cover T, being circular adapted to the suction nozzle 69, and at the other end on the drag cover T facing top of the plate 72 supports. By the force of the spreading spring 74 are when open Drag cover T this and the plate 72 slightly V-shaped held, the spread is limited by a between plate 72 and the underside of the drag cover T tensioned, flexible connection element in the form of a preferably made of plastic Strappy 75, see FIG. 3 Plate a recess 90 on the passage of the suction port 69.

The swiveling at the bottom of the drag cover T. attached plate 72 carries one against the force an injection molded part of a circular section in plan trained spring 76 slidably mounted Operating projection B. The displaceability of the operating projection B is given by a rail-like Guidance, with the molded spring 76 the actuation projection B always in one towards the Free end of the plate 72 facing direction.

At its free end, the actuation projection B carries one, approximately perpendicular to the direction of extension of the actuating projection B aligned, protruding operating nose 77, which in the course of closing the Filter chamber 7 by means of the drag cover T, the closure element V of the holding plate 23 described Dust filter bag 20 takes.

The plate 72 extends viewed from the direction of the actuating projection B- over the range of Hinge 73 by approximately the same as the plate thickness Dimension beyond and forms on the trained here Narrow edge 78, associated with the longitudinal edges 79 and 80 Registration tabs 81 off. The latter are therefore in the corner areas of the overhanging hinge 73 Area of the plate 72 arranged, the Registration tabs 81 are approximately perpendicular to one Plane extension of the actuation projection B or the Extend plate 72.

The registration protrusions 81 have a T-shaped Floor plan, with the T-arm an entry sword 82 forms.

These registration projections 81 act in the course of a Closing the filter chamber 7 by means of the drag cover T with between the suction opening 30 facing narrow edge 36 of the holding plate 23 and the Chamber wall 22 formed in the region of the narrow side 12 Registration openings 83 together, but only this when the dust filter bag 20 is inserted, this also must be used in the correct position.

In the course of the closing process of the filter chamber 7 by means of of the drag cover T is the actuation projection B with its actuating nose 77, the form-fitting recess 35 of the locking plate-side closure element V. Im In the course of the further closing movement of the drag lid T pivots the plate 72 against the hinge 73 the spring force of the spreading spring 74 in the direction of the Bottom of the drag cover T, which is a Relocation of the closure element V for release the suction opening 30 and, on the other hand, a concomitant one Swiveling the registration protrusions 81 into one ultimately essentially perpendicular to the drag cover T aligned position. The closed position is in 6 and 7 shown. Here you can see that the registration protrusions 81 are so aligned are that these inside the chamber wall 22 in the Immerse registration openings 83.

In this closed position are both the drag cover T as well as the actuation projection B or its plate 72 in a substantially parallel position to the chamber opening plane panned.

The run-in swords 82 of the registration protrusions 81 dip into the entry openings 37 of the holding plate 23, which entry openings 37 also serve as registration openings. They further effect Entry swords 82 in cooperation with the entry openings 37 a centering of the holding plate 23.

If, on the other hand, no dust filter bag 20 is inserted, then finds the actuation projection B or its Actuating nose 77 no abutment, so that none Swiveling the plate 72 against the spring force of the Spreading spring 74 takes place. Drag cover T and plate 72 are in their V-shaped basic position in the filter chamber 7 pivoted in, with the result that the Registration protrusions 81 locking on the chamber wall Support 22 (see. Fig. 12 to 14). Functional closing of the entire vacuum cleaner by swiveling the filter chamber 7 onto it Housing 2 is not possible because of the registration protrusions 81 protrude into the closure plane. The user this gives an optical indication that no Dust filter bag is inserted. Next is the vacuum cleaner not operational due to this locked position.

Furthermore, the actuation projection B is an attachment foot 84 assigned which is rigidly attached to the actuating projection B holding plate 72 is formed. This The base 84 is essentially in its layout U-shaped and runs at an angle of approx. 120 ° to the direction of extension of the actuating projection B or to plate 72 (see angle Alpha). The arrangement is such that the attachment foot 84 on the facing away from the actuation projection B. Underside of the plate 72 is integrally formed.

The attachment foot 84 causes in the course of the closing movement of the drag cover T on a support of the plate 72 the holding plate 23, in the stiffened edge areas the long sides 39 and 44, d. H. outside to the side of the free space for moving the locking element V. Thus, a large part of the placement force through the plate 72 over the attachment foot 84 in the stable Edge areas of the holding plate 23 initiated. This has the main advantage that the placement force not or only to a small extent via the actuation projection B on the closure element to be moved V is transmitted. Too large on the closure element V forces could affect the function of the Locking element V affect, for example increased friction.

Due to the U-shaped configuration of the plate 72 in the area of the attachment foot 84 this dips into the Swing-in position to the side of the drag cover T in the top area of the same through.

The registration functions are also when using a Dust filter bag with a holding plate without closure element feasible. Here, the plate 72 would the actuation projection B in the course of the closing process shifted through the closed top of the holding plate, resulting in a desired pivoting of the registration tabs 81 - as described - in the with the Lead registration openings 83 corresponding position would.

In the illustrated embodiment of the vacuum cleaner 1 the suction air enters through the suction nozzle 69 in the Dust filter bag 20 and will, the dust bag 24th penetrating from the chamber 7 between the chamber wall 22 and the edge edges of the holding plate 23 in the area the indentations 58, 60 and 61 sucked. At such a suction system, it can be used relatively unstable materials of the filter chamber 7 to one Deformation of the same come what leaks in the Area of the closure level between filter chamber 7 and Housing 2 can lead.

To counteract this, the drag cover T has protruding distance nokks transverse to its longitudinal extent 85, which in the closed state according to FIG. 8 with the Interact with the inner wall of the filter chamber 7. It a total of four distance cams 85 are provided two pairs of two opposite each other Distance cams 85, the two pairs being symmetrical are arranged to the longitudinal center axis of the filter chamber 7.

These distance cams 85 support the chamber wall 22, so that due to the negative pressure prevailing in this area no deformation of the wall 22 can occur.

Furthermore, the distance cams 85 are down, d. H. pointing towards the chamber interior Locking projections 86 for entering the indentations 58 of the holding plate 23 is formed. These are preferred lengthwise chosen so that this is in a Locked position over the underside of the holding plate 23 extend.

Claims (30)

1. Vacuum cleaner (1) with a chamber (7) for holding a dust filter bag (20), wherein the chamber (7) is closable with a trailing cover (T) and on the lower side of the trailing cover (T) is arranged an operating projection (B), wherein the operating projection (B) is pivotably connected to the trailing cover (T) and wherein furthermore on the operating projection (B) is formed a register projection (81) which after pivoting of the operating projection (B) enters a register opening (83) of the chamber (7), characterised in that the register projection (81) is formed at the end of the operating projection (B) connected to the trailing cover (T) and extends approximately at right angles to the planar extent of the operating projection (B).
2. Vacuum cleaner according to claim 1, characterised in that the register projection (81) is associated with a longitudinal edge (79, 80) of the operating projection (B).
3. Vacuum cleaner according to one or more of the preceding claims, characterised in that the register opening (83) is formed between an edge (36) of the dust filter bag (20) on the narrow side, and a housing wall (22) of the chamber (7).
4. Vacuum cleaner according to one or more of the preceding claims, wherein in the chamber (7) is arranged a dust filter bag (20) with a holding plate (23) having an essentially rectangular contour, characterised in that the holding plate (23) comprises a slot-like entry opening (37) which opens towards the edge (36) on the narrow side for receiving the register projection (81).
5. Vacuum cleaner according to one or more of the preceding claims, characterised in that the register projection (81) comprises an entry tongue (82) for cooperation with the entry opening (37) of the dust filter bag (20).
6. Vacuum cleaner according to claim 5, characterised in that the register projection (81) has a T-shaped contour, the stem of the T being formed from the entry tongue (82).
7. Vacuum cleaner according to one or more of the preceding claims, characterised in that two register projections (81) are formed.
8. Vacuum cleaner according to one or more of the preceding claims, characterised in that in the chamber (7) associated with the holding plate (23) is formed a latch protuberance (63) which can be overrun in a vertical direction and which, when the holding plate (23) is inserted, engages over the latter on the upper side.
9. Vacuum cleaner according to one or more of the preceding claims, characterised in that, with an essentially rectangular contour of the chamber (7), associated with three corner regions are formed latch protuberances (63).
10. Vacuum cleaner according to one or more of the preceding claims, characterised in that the chamber (7) comprises on the inner wall inwardly projecting webs (62) on which the holding plate (23) is supported.
11. Vacuum cleaner according to one or more of the preceding claims, characterised in that on the trailing cover (T) are formed distance protuberances (85) which project transversely to its longitudinal extent and which cooperate with the inner wall of the chamber (7).
12. Vacuum cleaner according to claim 11, characterised in that the distance protuberances (85) are formed with downwardly pointing latch projections (86) for entry into indentations (58) of the holding plate (23).
13. Vacuum cleaner according to one or more of the preceding claims 11 and 12, characterised in that two pairs each of two opposed distance protuberances (85) are formed.
14. Vacuum cleaner according to one or more of the preceding claims, characterised in that on the operating projection (B) is formed a mounting foot (84) which runs at an angle to the direction of extent of the operating projection (B).
15. Vacuum cleaner according to claim 14, characterised in that the mounting foot (84) forms an obtuse angle (alpha) with a direction of extent of the operating projection (B).
16. Vacuum cleaner according to one or more of the preceding claims 14 and 15, characterised in that the mounting foot (84) is integrally formed rigidly on a plate (72) supporting the operating projection (B).
17. Dust filter bag (20) with a holding plate (23) for a vacuum cleaner (1) according to one or more of the preceding claims 1 to 16, wherein the holding plate (23) has an essentially rectangular contour and a suction opening (30), wherein furthermore the suction opening (30) is associated with a first end region (29) of the holding plate (23) on the narrow side, characterised in that the first end region (29) comprises a slot-like entry opening (37) running essentially perpendicularly to an edge (36) of the first end region (29) for receiving a register projection.
18. Dust filter bag according to claim 17, characterised in that the entry opening (37) in the depth direction of the holding plate (23) only partially penetrates the latter.
19. Dust filter bag according to one or more of claims 17 to 18, wherein the holding plate (23) consists of several layers of cardboard/paper material, characterised in that the entry opening (37) penetrates only a portion of these layers.
20. Dust filter bag according to one or more of claims 17 to 19, wherein the holding plate (23) consists of four layers (25 to 28) of cardboard/paper material, characterised in that the entry opening (37) penetrates only three layers (25 to 27).
21. Dust filter bag according to one or more of claims 17 to 20, characterised in that the entry opening (37) is associated with a corner region (38) of the holding plate contour and in that on the longitudinal edge (39) of the holding plate contour associated with the same corner region (38) is a second entry opening (40).
22. Dust filter bag according to one or more of claims 17 to 21, characterised in that on a longitudinal edge (39) each associated with one corner region (38, 51) is an opening (41, 55) for passage of a positioning projection (66), while opposite on the other longitudinal edge (44) the holding plate (23) is in this respect closed.
23. Dust filter bag according to claim 22, characterised in that one opening (41) is defined on both sides by holding plate projections (42, 43), wherein the width (a) of the opening approximately corresponds to 0.25 to three times the width (b) of the adjacent projections (42, 43).
24. Dust filter bag according to claim 23, characterised in that the holding plate projection (43) associated with the opposite narrow side (46) has a sloping flank (47) in the direction of the opposite narrow side (46), while in a direction towards the other narrow side (36) the holding plate projection (43) has a straight edge (48) running essentially at right angles to the longitudinal edge (39).
25. Dust filter bag according to claim 24, characterised in that on the side of the longitudinal edge opposite is arranged a further projection (45) with a width (d) enlarged by the amount of the opening width (a).
26. Dust filter bag according to one or more of claims 23 to 25, characterised in that on a longitudinal edge (39, 44) the projections (42, 43 and 45, 54) associated with the corner regions (38 and 51, 52) are arranged symmetrically to a longitudinal centre axis (y-y) of the holding plate (23).
27. Dust filter bag according to one or more of claims 17 to 26, characterised in that over the length of the holding plate (23) are formed in each case two essentially opposed indentations (58).
28. Dust filter bag according to claim 27, characterised in that the indentations (58), associated with the centre region of the holding plate longitudinal edges (39, 44), are defined by projections (59, 59') which between them form smaller indentations (60, 61).
29. Dust filter bag according to claim 28, characterised in that on a longitudinal edge (44) are formed two smaller indentations (60), opposite a small indentation (61) of the other longitudinal edge (39).
30. Dust filter bag according to claim 29, characterised in that the two smaller indentations (60) of one longitudinal edge (44) are in each case formed opposite the projections (59') defining a small indentation (61).

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