EP2484264B1 - Dishwasher, in particular household dishwasher - Google Patents

Description

The invention relates to a dishwasher, in particular a domestic dishwasher, with a carrier module and with a bottom part of a washing container, in the first connection areas, in particular on the front of the device, by means of fixed bearings and in the depth direction of the dishwasher spaced second connection areas, in particular on the back of the device , To compensate for component tolerances of the support module and / or the bottom part of the washing, are connected to each other by means of tolerance compensation elements.

For dishwashers, a stable component connection between the washing container and a carrier module arranged thereunder is important in order to achieve a favorable distribution of forces within the dishwasher when a force is introduced from outside.

Many dishwashers have a carrier module, on which a rinsing container in a first connection region, in particular on the front of the device, is fastened in a fixed bearing on the carrier module. For example, the document discloses DE 10 2009 000174 A1 a dishwasher with a carrier module and with a bottom part of a washing container, which are connected to each other in first connection areas by means of fixed bearings and in spaced in the depth direction of the dishwasher second connection areas. When mounting the dishwasher, the washing container is first aligned aligned in the front of the device, the first connection area to the carrier module. Subsequently, the washing compartment is attached to the rear of the appliance in the second connection area. The attachment in the rear connection area, however, can be problematic because, due to component tolerances, the respectively cooperating connection points on the rinsing container and on the carrier module can be displaced relative to one another. To compensate for component tolerances, for example, slots can be provided to engage in the screws. The slots act as tolerance compensation elements. However, such screw connections are associated with high material and assembly costs.

The object of the invention is to provide a dishwasher, in particular domestic dishwasher, in which a simple and cost-effective installation is made possible regardless of component tolerances.

The object is achieved by a dishwasher with the features of claim 1. Preferred developments of the invention are laid down in the subclaims.

It is provided according to the invention that tolerance compensation elements are provided in the second connecting regions, which are fastened to the carrier module or to a bottom part of the washing container and which each have at least one first rack contour, each with at least one corresponding second, arranged on the bottom part or on the carrier module Rack contour is engaged and causes a force acting in the depth direction positive connection to transmit forces acting in or against the depth direction. With the help of the rack contours, the tolerance compensation elements can compensate for tolerance-related displacements between the carrier module and the bottom part of the washing compartment and, independently of this, always allow a perfect fastening of the washing compartment on the carrier module and force transmissions. Thus, the provision of slots and the associated assembly of screw can be omitted.

So that the bottom part of the washing container can be pre-positioned in the correct position on the carrier module in a simple manner, it is advantageous if a joining movement of the bottom part of the washing container in the direction of the carrier module is supported by a guide. For this purpose, the rack contours themselves can form such a guide for a joining movement for mounting the bottom part of the washing container on the carrier module. The joining movement can be carried out along a height direction of the dishwasher, which is perpendicular to the depth direction. In this case, the tooth gaps existing between the teeth of the rack contours can each form guide channels which extend in the direction of the intended joining movement. The rack contours can thus act as a (multiple) guide during the assembly of rinsing container and carrier module by a joining movement in the vertical direction perpendicular to the depth direction.

The tolerance compensation elements can be designed such that they can compensate for component tolerances in the depth direction by elastic deformation. For this purpose, in each case a portion of a tolerance compensation element may be formed elastically, e.g. as a spring element. In this case, the elastic deformation in particular compensate for component tolerances that are smaller than the tooth width between the teeth of the rack contours. Due to the elastic deformability of the tolerance compensation elements, a tolerance compensation is made possible if, during assembly, the teeth of the first rack contour and the teeth of the corresponding second rack contour coincide in each case with their vertices, ie tooth on tooth.

In addition, the tolerance compensation elements can be designed to be elastically deformable such that a compensation of component tolerances in a width direction of the dishwasher is additionally made possible, the width direction being perpendicular to the above-mentioned depth direction.

For this purpose, a further, second portion of the tolerance compensation elements may be elastic, e.g. as a second spring element, or both spring effects are combined in a spring element.

In one embodiment, the first and the corresponding second rack contours may each form a serration.

The teeth of the serrations may preferably extend with a tooth height in a range of 0.3 mm from the root of the tooth. A tooth gap of the serrations formed between the teeth may be in a range of about 0.7 mm.

The rack contours can have, for example, a number of latching projections or a corrugated profile. The respective mutually corresponding rack contours can be arranged preformed on the carrier module or the bottom part of the washing compartment. Alternatively, one of the first or second rack contour can also come into self-tapping engagement with the carrier module or the bottom part, without a corresponding rack contour having to be preformed on the bottom part or on the carrier module. The respective corresponding rack contour is thus generated and formed only during the assembly.

Preferably, the bottom part of the washing container can be fixed at its device front side corner regions via the first connection points on the carrier module. In contrast, the two can be arranged in the context of the invention, second attachment points on the rear side corner areas of the bottom part.

During assembly, the washing container or its bottom part in the vertical direction, ie vertical direction can be placed on the carrier module. When placing the washing container on the mounting base whose rack contour can be automatically brought into tolerance compensation with the corresponding rack contour of the carrier module in engagement. The rack contours can determine the washing container in the horizontal plane of the depth direction and / or in the width direction.

As mentioned above, independent of component tolerances, play-free mounting of the washing container on the carrier module is important in order to transmit as high forces or moments between these device components can. For this purpose, the rack contour of the tolerance compensation elements may extend, in particular in the depth direction, over a predetermined compensation length, which may be on the order of 0.5 to 5 cm. Accordingly, the cooperating second rack contours may also extend.

In technical embodiment, the tolerance compensation elements may be formed as projecting from the bottom part of the washing container boom, which may be formed in particular elastically yielding transversely to a tolerance compensation direction, ie in the width direction. For this purpose, the tolerance compensation elements may each have two elastically resilient locking legs, on each of which a first rack contour is arranged, which can be brought into latching engagement with a corresponding second rack contour on the carrier module.

For a simple assembly, the bottom part of the washing container in the first and / or second connecting regions may have latching elements which secure the washing container in the vertical direction on the carrier module. Each of the second, in particular device-rear connection areas can thus each a tolerance compensation element according to the invention and have a separate latching element, which prevents lifting of the washing container from the carrier module.

At the bottom part of the washing container, supporting portions, e.g. in the form of support plates, be formed, with which the washing container can be supported on the top of mounting slots of the support module. On the undersides of the washing container support plates can each be formed both a tolerance compensation element and an above-mentioned locking element. After assembly, both the tolerance compensation element and the locking element can each protrude into the mounting shaft.

To simplify the assembly, the bottom part of the washing container can have at least one centering element with the aid of which a positionally correct arrangement of the washing container on the carrier module is supported. Thus, a centering element can be formed on the bottom part, which can be brought into engagement with the carrier module. After the assembly has taken place, the centering element can, for example, overlap a mounting wall of the carrier module between the two appliance-rear second connection regions. The centering element can be provided approximately in the middle between the device-rear connection areas or between the container corners of the washing compartment. In addition to its centering function during assembly, the centering element can also prevent buckling of the washing between its two corners in the event of an external force.

The rinsing container can be arranged at its two device front side connection areas between mounting plates of the carrier module substantially free of play. The mounting plates can, for example, in a conventional manner lateral, plate-shaped hinge support - often referred to as hinge plates - be. These can be made of sheet metal material. Swiveling hinge levers of a door can be hinged to the hinge plates. In this way, the washing compartment is fixed in the width direction. In addition, the washing container as a further functional part may have lateral supporting flanks or sections, via which it can be supported directly on the mounting plates of the carrier module. To secure in the height direction additional locking elements may be formed, which can engage under the corresponding locking tabs of the mounting plates.

For fixing in the depth direction, the bottom part of the washing container can have lateral movement stops which are arranged essentially free of play between two vertical guide walls of the respective associated mounting plate. As a further functional element, the bottom part of the washing container can have lateral centering elements, each with a centering gap, which can be used during assembly for pre-centering of the washing container between the two mounting plates of the mounting base. In the assembled state, the mounting plates protrude with play in the centering of the lateral centering of the washing.

In a preferred embodiment, the washing container may have a bottom part formed as a separate component. The bottom part can then be inexpensively manufactured as a plastic component, while the side, rear and / or top walls of the washing can be made as sheet metal parts. All the above-mentioned functional elements, such as tolerance compensation elements, locking elements and centering can be integrally formed on the bottom wall of the washing. Of course, the bottom part can also be designed in one piece with the side, rear and top walls of the washing.

It is preferably provided that the rinsing container has a closable opening and a rear wall arranged in the depth direction with respect to the opening, wherein the first connection region is arranged in the region of the opening and the second connection region in the region of the rear wall. Thus, the first connection area in the depth direction is arranged closer to the appliance door than the second connection area. Conversely, the second bonding area is arranged closer to the rear wall in the depth direction than to the opening.

Finally, it is preferably provided that hinge plates are provided for fastening a door to close the opening in the first connection area. In this case, the hinge plates are connected to a first portion with the bottom part of the washing container and with a second portion with a base support of the carrier module, thus establishing a fixing connection between the washing container and base support forth. Thus, a pivotable about a substantially horizontal axis door can be arranged on the hinge plates, with the opening of the washing open and can be closed to introduce to be cleaned dishes in the washing or to remove cleaned items from the washing.

Further features and advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the accompanying figures.

Fig. 1

eine schematische Perspektivdarstellung einer Bodengruppe einer erfindungsgemäßen Geschirrspülmaschine mit angedeuteter Außenkontur der Geschirrspülmaschine;

Fig. 2

eine schematische Perspektivdarstellung der Bodengruppe gemäß Figur 1 in einem Vormontagezustand.

Fig. 3

eine schematische Perspektivdarstellung eines gerätefrontseitigen ersten Anbindungsbereichs eines Bodenteils eines Spülbehälters an einem Trägermodul;

Fig. 4

eine Detailansicht des ersten Anbindungsbereichs aus Fig. 3;

Fig. 5

eine schematische Perspektivdarstellung eines geräterückseitigen zweiten Anbindungsbereichs des Bodenteils des Spülbehälters an dem Trägermodul in einem Vormontagezustand;

Fig. 6

eine schematische Detailansicht eines Montageschachtes eines Trägermoduls;

Fig. 7

eine schematische Detailansicht des zweiten Anbindungsbereiches mit einem Toleranzausgleichselement gemäß einer ersten Ausführungsform;

Fig. 8

eine schematische Detailansicht des zweiten Anbindungsbereiches mit einem Toleranzausgleichselement gemäß einer zweiten Ausführungsform; und

Fig. 9

eine schematische Schnittdarstellung im Bereich eines geräterückseitigen Zentrierelements.

Show it:

Fig. 1

a schematic perspective view of a bottom group of a dishwasher according to the invention with an indicated outer contour of the dishwasher;

Fig. 2

a schematic perspective view of the floor assembly according to FIG. 1 in a pre-assembly state.

Fig. 3

a schematic perspective view of a device front side first connection region of a bottom part of a washing container on a support module;

Fig. 4

a detailed view of the first connection area Fig. 3 ;

Fig. 5

a schematic perspective view of a device rear side second attachment region of the bottom part of the washing container on the carrier module in a pre-assembly state;

Fig. 6

a schematic detail view of an assembly shaft of a carrier module;

Fig. 7

a schematic detail view of the second connection region with a tolerance compensation element according to a first embodiment;

Fig. 8

a schematic detail view of the second connection region with a tolerance compensation element according to a second embodiment; and

Fig. 9

a schematic sectional view in the region of a device rear centering.

In Fig. 1 is in a perspective view roughly a dishwasher indicated, the bottom group 1 is highlighted. The outer contour line of the dishwasher housing is indicated by a dashed line. Like from the Fig. 1 Furthermore, a device door 5 of the dishwasher in a known manner on lateral plate-shaped hinge supports 7 - hereinafter referred to as hinge plates - hinged. The lateral hinge plates 7 are angularly formed sheet metal parts, which are laterally supported with their vertical legs in a base-side base support 8 of the dishwasher. For the sake of clarity is in the FIGS. 1 and 2 only one hinge plate is shown. The base support 8 is made of plastic in the present embodiment. The base carrier forms, together with the hinge plates 7, a carrier module 9 of the dishwasher.

The in the Fig. 1 floor group 1 shown in addition to the support module 9, so the base support 8 and the content held therein hinge plates 7 from a bottom part 11 of a washing container not shown further of the dishwasher. The bottom part 11 may be formed as a separate from the washing plastic component, which is supported on the front side mounting areas I on the hinge plates 7 and on the rear second access areas II on rear mounting slots 13 of the base support 8. The washing container can also be made in one piece with the bottom wall 11 made of plastic.

The bottom part 11 is formed substantially trough-shaped with a rectangular base and side walls 15 raised at the edge. The above-mentioned attachment areas I, II are provided between the respective vertically superimposed corner regions of the bottom part 11 and the hinge plates 7 and the base support 8, respectively. All functional elements that are used for mounting, centering or for holding the bottom part 11 on the support module 9 are, according to the in the Fig. 1 and 2 illustrated embodiment integrally formed on the bottom part 11.

In Fig. 3 one of the two device front-side connection areas I is shown in detail. In this case, the bottom part 11 with its raised side walls 15 in one Width direction x of the dishwasher each set between the two hinge plates 7. The bottom part 11 also has front side in the width direction x projecting side edges 17. The side flanks 17 essentially follow the front edge profile of the hinge plates 7. The bottom part 11 is supported on the hinge plates 7 via the side flanks 17.

In addition, on the side walls 15 of the bottom part 11 elastically yielding locking elements 19 are formed, which prevent a detachment of the bottom part 11 upwards. The two locking elements 19 engage under, as in the Fig. 3 and 4 illustrated, locking tabs 21 which are bent out of a window-like cutout 23 of the respective hinge plate 7 at right angles. Above the two locking elements 19, a movement stop 25 is integrally formed on the side wall 15 of the bottom part 11. The movement stop 25 is arranged substantially free of play between the two locking tabs 21, whereby the bottom part 11 is fixed in a depth direction y of the dishwasher. In addition, 11 centering elements 27 are integrally formed on the side walls 15 of the bottom part, each having a bottom side and device front side open centering 26, in each of which a portion of a hinge plate 7 protrudes.

In Fig. 4 is shown in a side view, the latching between the locking elements 19 of the bottom part 11 and the locking tabs 21 of a hinge plate 7 is shown enlarged. As a result, the two latching elements 19 converge in an approximately V-shaped manner. The two locking elements 19 are integrally formed on their V-shaped transition to the side wall 15, whereas the beyond extended free portions of the locking elements 19 in the depth direction y are resiliently movable.

The two opposing locking tabs 21 of the cutout 23 each form vertical guide walls, between which a, in the illustrated embodiment approximately Z-shaped movement stop 25 is vertically inserted from above. In this way, the bottom part 11 is held without play in the device front-side connection areas I in the form of fixed bearings in the width direction x, in the depth direction y and also in a height direction z.

In the Fig. 5 to 7 in each case a device-rear second connection region II of the bottom part 11 and the carrier module 9 is shown. At the rear corners of the bottom part 11 horizontally projecting support plates 29 are formed, which are reinforced towards the top of the bottom part 11 by means of stiffening ribs. At the base support 8 facing lower sides of the support plates 29, a latching element 31 is formed in each case, with which the bottom part 11 is secured in the height direction z upwards. In addition, a tolerance compensation element 33 is integrally formed on the undersides of the support plates 29, which is also engageable with the base support 9 in latching engagement.

The tolerance compensation elements 33 of the bottom part 11 have first rack contours 41, which form a serration together with corresponding toothed rack contours 43, which are formed on the base support 8. As a result, component tolerances between the bottom part 11 and the carrier module 9, that is to say the base carrier 8 and the hinge plates 7, can be compensated in the depth direction y, as described later.

The latching element 31 extends vertically via a latching web from the support plate 29 downwards and has at its free end a latching projection which can engage behind a corresponding recess 35 in the associated mounting shaft 13. The integrally formed on the support plate 29 tolerance compensation element 33 is approximately Y-shaped, with a molded directly on the support plate 29 base leg 37, protrude from the two locking legs 39 in the depth direction y of the dishwasher. The two locking legs 39 are provided on the outside, each with a first rack contour 41. In addition, the two locking legs 39 of the Toleranzausgleichselemen 33 are not fixed to the support plate 29 in connection, but relative to the support plate 29 freely movable. The two locking legs 39 are thus elastically yielding in the width direction x.

The first rack contours 41 of the two locking legs 39 cooperate with the corresponding second rack contours 43, which are arranged within the mounting shaft 13, together (see. FIG. 7 ). In this case, each of the rack contours 41, 43 each latching projections which are aligned vertically. Both rack contours 41, 43 extend approximately at a compensation length Δl in the range of 0.5 to 3 cm. In this way, tolerances between the bottom part 11 of the washing container and the carrier module 9 can be balanced on the one hand in the depth direction y and on the other hand a play-free mounting in the depth direction y can be achieved. This is independent of tolerances in the depth direction y ensures proper power transmission between the bottom part 11 and the carrier module 9.

In Fig. 8 an alternative embodiment of a tolerance compensation element 33 'is shown. In this case, the first rack contours 41 'of the rack element 33' in the depth direction y are not rectilinear, but rather are bulged in the width direction x. The in the Fig. 8 shown rack contours 41 'are thus on a circular line with a radius R, the center lies on an axis of symmetry of the tolerance compensation element 33'. Detent leg 39 'and a base leg 37' in this case form a T-shape, wherein the two locking legs 39 'are reinforced by means of a stiffening wall 40'.

The latching recess 35 in the mounting shaft 13 is dimensioned in the depth direction y such that a successful tolerance compensation within the compensation length .DELTA.l is not affected. The latching recess 35 engaging behind latching element 31 can thus absorb no forces in the depth direction y.

How out Fig. 6 further shows, rib-like run-off slopes 45 are formed above the latching recess 35 and within the mounting shaft 13, which rise flat down to the upper edge of the latching recess 35. During assembly, the run-on slopes 45 come into contact with the latching projection of the latching element 31, so that the latching element 31 elastically bends. Once the chamfers 45 are overcome, the locking element 31 is elastically back to its original position. In its initial position, the latching element 31 then engages behind the latching recess 35 of the mounting shaft 13.

As already mentioned above, each centering elements 27 are provided on the two side walls 15 of the bottom part 11, in the centering column 26 of which the hinge plates 7 can protrude. In addition, a further centering element 47 is provided on the rear side wall 15 of the bottom part 11, which in the assembled state projects beyond a mounting wall 49 of the base support 8 downwards. In the assembled state, the centering element 47 engages behind the upper edge of the device rear side mounting wall 49 of the base support 8. For centering a pocket-shaped recess 51 is formed in the mounting wall 49, in which the centering element 47 can retract from above. In this way, on the one hand during the assembly process, a centering of the Rear area of the bottom part 11 reaches. On the other hand, with a force application from the outside, the centering element 47 at the same time act as a stiffening element which prevents buckling of the rear side wall 15 of the bottom part 11.

When mounting the dishwasher, the bottom part 11 is first placed vertically from above on the support module 9, so that the bottom part 11 is supported on its front side edges 17 and on their rear support plates 29 on the hinge plates 7 and the mounting shafts 13. In this case, the bottom part 11 automatically comes into latching engagement with the two hinge plates 7 and in the rear connection regions II in latching engagement with the base support 8 by means of the two device front side lateral centering elements 27 and the rear centering 47 while a pre-centering takes place in the front connection areas. <B> LIST OF REFERENCES </ b> 1 underbody x width direction 3 casing y depth direction 5 door z height direction 7 hinge plate 8th base support 9 carrier module 11 the bottom part 13 Mounting shaft 15 Side wall 17 side flank 19 locking element 21 snap tab 23 neckline 25 travel stop 26 Zentrierspalt 27 centering 29 support plate 31 locking element 33 Tolerance compensation element 35 recess 37, 37 ' base leg 39, 39 ' latching leg 40 ' stiffening wall 41, 41 ', 43 Rack contour 45 starting slope 47 centering 49 mounting wall 51 deepening I, II connecting regions .DELTA.I balancing length

Claims (14)

1. Dishwasher, in particular domestic dishwasher, with a support module (9) and with a base part (11) of a dishwasher cavity, which can be interconnected in first connection regions (I), in particular on the front side of the appliance, with the aid of fixed bearings and in second connection regions (II) spaced apart therefrom in the depth direction (y) of the dishwasher, in particular on the rear side of the appliance, characterised in that the support module (9) and the base part (11) of the dishwasher cavity are interconnected in the second connection regions (II) to compensate for component tolerances of the support module (9) and/or the base part (11) of the dishwasher cavity with the aid of tolerance compensation elements (33), wherein the tolerance compensation elements (33)

   - are fastened to the support module (9) or to the base part (11) and

   - in each case have at least one first toothed bar contour (41), which in each case is in engagement with at least one second toothed bar contour which corresponds thereto and is arranged on the base part (11) or on the support module (9), and brings about a form-fit connection acting in the depth direction (y), in order to transmit forces acting in or against the depth direction (y).
2. Dishwasher according to claim 1, characterised in that the toothed bar contour (41, 43) forms a guide for a joining motion for mounting the base part (11) of the dishwasher cavity and the support module (9), wherein the joining motion can be performed along a height direction (z) of the dishwasher, which is perpendicular to the depth direction (y).
3. Dishwasher according to claim 1 or 2, characterised in that the tolerance compensation elements (33) are embodied so as to be resiliently deformable in the depth direction (y), wherein component tolerances of the support module (9) and/or the base part (11) of the dishwasher cavity can be compensated by the resilient deformation in the depth direction (y), which component tolerances are smaller than a tooth width of the toothed bar contours (41, 43).
4. Dishwasher according to claim 1, 2 or 3, characterised in that the tolerance compensation elements (33) are embodied so as to be resiliently deformable in a width direction (x) of the dishwasher, wherein the width direction (x) is perpendicular to the depth direction (y).
5. Dishwasher according to one of claims 1 to 4, characterised in that the first toothed bar contours (41) and the second toothed bar contours (43) corresponding thereto form a spline in each case.
6. Dishwasher according to one of the preceding claims, characterised in that the toothed bar contours (41, 43) extend over a predefinable compensation length (Δl) of from 0.5 cm to 3 cm.
7. Dishwasher according to one of the preceding claims, characterised in that the tolerance compensation elements (33) are embodied as cantilevers protruding from the base part (11) of the dishwasher cavity, which are resiliently flexible in the width direction (x) in particular.
8. Dishwasher according to one of the preceding claims, characterised in that the tolerance compensation elements (33) have two, in particular resiliently flexible latching legs (39) in each case, on which a first toothed bar contour (41) is arranged in each case, which is in engagement with a corresponding second toothed bar contour (43).
9. Dishwasher according to one of the preceding claims, characterised in that the base part (11) of the dishwasher cavity has a latching element (31) in each case, at least in the second connection regions (II), which secures the base part (11) of the dishwasher cavity on the support module (9) in the height direction (z).
10. Dishwasher according to one of the preceding claims, characterised in that the support module (9) has a mounting shaft (13) in each case, at least in the second connection regions (II), on the top side of which mounting shaft (13) the base part (11) of the dishwasher cavity can be braced and/or into which the tolerance compensation element (33) and/or the latching element (31) protrudes.
11. Dishwasher according to one of the preceding claims, characterised in that at least one centring element (47) is embodied on the base part (11) of the dishwasher cavity for centring in the width direction (x), which centring element (47) is in engagement with the support module (9).
12. Dishwasher according to one of the preceding claims, characterised in that the support module (9) comprises mounting plates (7), in particular hinge plates, and the base part (11) of the dishwasher cavity is arranged essentially between the mounting plates (7) in the first connection region (I) and/or is braced against the mounting plates (7) via brace sections (17).
13. Dishwasher according to claim 12, characterised in that each of the mounting plates (7) has two vertical guide walls (21) for setting the base part (11) of the dishwasher cavity, in particular in the depth direction (y), between which a motion stop (25) of the base part (11) is arranged with essentially zero play.
14. Dishwasher according to one of claims 12 or 13, characterised in that the base part (11) of the dishwasher cavity has lateral centring elements (27), each having a centring gap (16), into which the mounting plates (7) of the support module (9) protrude.

Images