EP3775727B1 - Household appliance with a wall having a raised coupling element for coupling with an insertion piece provided thereon, as well as a method for mounting the insertion piece on the wall - Google Patents

Description

The invention relates to a household appliance, in particular a household refrigeration appliance, with a receiving space, in particular for food, which is delimited by walls of the household appliance, and with a backing part which is arranged on an outside of one of these walls facing away from the receiving space, the backing part having a coupling element , which in the assembled state of the backing part is coupled on the outside with a counter-coupling element that is arranged on the outside. The invention also relates to a method for assembling a backing part.

An embodiment with a backing part on an inner container is, for example, from WO 2011/080654 A2 known. There, a wall of the inner container is formed with a hole and thus an opening. A pin of the backing part extends into this hole. The backing part lies directly on the outside of the wall. No other element is arranged between the hole and the tenon. An inner container of a household refrigerator is usually made of plastic, so that direct attachment of other components to it is restricted. Functional components, such as a rail pull-out device, on which other components such as shelves or containers for food can be placed, have a corresponding weight, which then also acts on the fastening arrangement. Precisely in this context, it is known in the prior art to use such a rail-shaped backing part made of metal in addition to this side wall in order to be able to securely and reliably attach the separate functional component to it and, in this context, to also provide for corresponding larger weight forces can be included. This backing part then essentially creates a concept in which the side wall is maximally relieved as a supporting structure and the actual main connection of the functional component to this backing part takes place. However, foam material can pass through the hole in the wall, which is introduced as thermal insulation material into a space between the inner container and an outer housing.

JP 2001 012845 A discloses a door of a refrigerator in which flanges of a reinforcing plate and a frame are slidably engaged with a first convex portion of an inner panel.

US 2008/048540 A1 discloses a refrigerator body having an outer case for defining an external appearance and an inner case for defining the interior of a refrigerator, and with a foam insulation material filled in a space between the outer and inner cases.

US 2016/025405 A1 discloses a refrigerator comprising an inner housing having a storage compartment formed therein, an outer housing connected to an outside of the inner housing.

DE 10 2014 203 619 A1 discloses a refrigeration appliance with an inner wall (3) made of plastic and at least partially delimiting an interior space, with at least one one-piece bulge directed outwards with respect to the interior space, in which an insert part is arranged, the bulge having an undercut which is connected to a projection of the Insert part is coupled.

Since the position of the functional component to be attached is important in order to be able to provide the functionality without restrictions, it is also important that the backing part can be positioned with corresponding precision. However, due to manufacturing and assembly tolerances, deviations can occur that can affect the functionality of the entire system.

It is the object of the present invention to create a household appliance, in particular a household refrigeration appliance, and a method in which the positioning of a backing part is improved.

This task is solved by a household appliance, in particular a household refrigerator, and a method according to the independent claims.

One aspect of the invention relates to a household appliance, in particular a household refrigerator, with at least one storage space, in particular for food. This Recording space is limited by walls of the household appliance. The household appliance also has at least one separate backing part, which is arranged on an outside of one of these walls facing away from the receiving space. The backing part has, integrated and thus formed in one piece with it, at least one coupling element which, in the assembled state of the backing part, is coupled on this outside with a counter-coupling element which is formed on the outside of the wall. The counter-coupling element is designed as a hole-free, raised cup. The coupling element is designed as a hole and thus a continuous recess through which the cup extends in the assembled state. The bowl, which can also be referred to as a dome or dome, is therefore also designed as a completely closed elevation. With such a configuration, the wall can be designed to be uninterrupted at least in the area of this counter-coupling element and the counter-coupling element itself. This ensures that this counter-coupling element is designed to be very stable. In addition, it can be avoided that dust or dirt could penetrate through the wall in the area of the coupling between the counter-coupling element and the coupling element. In addition, it is also achieved that any thermal insulation material that may be present in the area of the outside, such as an insulation foam, cannot penetrate through the wall in the area of the coupling between the counter-coupling element and the coupling element.

It can be provided that no further separate element is arranged between the counter-coupling element and the coupling element. The coupling element and the counter-coupling element thus lie directly against one another.

It can be provided that the cup is designed as a deep-drawn cup. It is therefore formed by deep drawing. With such a design, the bowl can be produced during the manufacturing process of the wall, which is produced by deep drawing. This enables simple and quick production. The wall with the bowl can also be made by injection molding.

It can be provided that the cup is designed like a dome. This means in particular that it has a corner-free jacket wall and also a corner-free roof wall that is curved in one direction, in particular convexly. By a Such a configuration makes coupling with the coupling element easy. In addition, manufacturing is also easier because this geometry means there are no unwanted edges and burrs.

It is intended that the receptacle is designed as a hole or breakthrough. Preferably, the hole or opening is closed at the edge, i.e. closed circumferentially. The hole or opening can be punched, especially if the backing part is made of metal. It can also be provided that the receptacle is formed by a pocket or a cup-shaped element or by a blind hole. Here, the pocket or the cup-shaped element or the blind hole can have a receiving opening.

It is envisaged that the receptacle, for example the coupling element designed as a hole, is designed like a funnel. This means that, according to the invention, viewed in the direction of a receiving axis, namely a hole axis, this recording, for example this hole, has a certain depth and tapers at least in some areas in this regard. This is advantageous in that, according to the invention, the width of the receptacle or hole at a funnel entrance (eg receiving opening) is then larger than at one
funnel bottom. In particular, in the case of a hole as a receptacle, the funnel bottom has an opening or a free cut through which the bowl then extends when the fully assembled state is reached. With such a design, the insertion of the bowl into the receptacle and, in the case of a hole, as a receptacle through the free cut in the bottom of the funnel can then be carried out in an improved manner.

This is advantageous in that in the case of a bowl, especially when produced by deep drawing, there is no discrete edge but rather a certain radius at the transition to the wall. In order not to create a disruptive stop on the edge of the receiving opening or, in the case of a hole, of the edge or the cutout of the hole on such an outside radius of the bowl, with a view to mounting the backing part in a precise position on the wall, the above-mentioned shape is the Recording or the hole is particularly advantageous. Because then, viewed in the direction of the receiving axis or the hole axis, the free cut and thus also the funnel bottom are spaced from this radius on the outside of the bowl or at the transition of the bowl to the flat area of the wall. In this way, a disruptive and incomplete contact of the backing part against the wall can be avoided. This also makes it possible to avoid unwanted material removal during assembly, for example by shearing off the edge of the edge that delimits the free cut, at this radius at the transition between the jacket wall of the cup and the further wall area of the wall.

It can be provided that the funnel shape is formed by a step in the wall. This stage is formed in particular by an embossing. As already explained above, in the case of a hole as a receptacle, a free cut is preferably formed on the bottom of the funnel for the bowl to pass through. In particular, it is provided that the wall thickness of the backing part is the same over the entire depth of the hole in those wall areas that then delimit this funnel-shaped hole. Due to the step, which is preferably created by embossing, there is no material thickening at any point. The funnel bottom therefore also has a thickness that corresponds to the thickness of the step and thus also corresponds to the thickness of that wall region of the backing part which delimits the funnel region of the hole.

It can be provided that at least two separate and spaced-apart cups are integrated and thus formed in one piece in the wall on the outside and a corresponding number of receptacles, e.g. holes, are formed in the backing part. Such a multiple coupling option between a bowl and a receptacle improves the attachment of a backing part. This enables the backing part to be fastened in a precise position and, in particular, in a rotation-free manner.

It can be provided that the receptacles, e.g. the holes, have different geometries. In addition or instead of this, it can be provided that the cups have different geometries. In particular, the jacket walls of the cups then have different geometries with an advantageous design in this regard.

On the one hand, such a different geometric configuration makes it possible to create an assembly code in an advantageous embodiment, so that the backing part can also be correctly mounted on the outside of the wall. Additionally or alternatively, such a different geometry also means that position and manufacturing tolerances can be compensated for more easily. This means that it can then be provided that the geometry of a receptacle, e.g. a hole into which a cup is to be immersed, is different from the geometry of this cup. In particular, the geometry of the receptacle, e.g. the hole, is different from a jacket wall of the bowl. Through such a design of different geometries of a receptacle to a cup to be coupled into this receptacle, the positioning and individual positional alignment of the backing part can be improved. This also makes it easy to compensate for assembly and manufacturing tolerances.

It can be provided that, for example, the first receptacle, for example the first hole, in particular in a receiving opening or in the case of a hole in a free cut for passing through a cup, has a circular geometry and the second receptacle, for example the second hole, in particular in a Receiving opening or in the case of a hole in a free cut for passing a bowl through, has a degenerate circular shape. A degenerate circular shape can be, for example, an oval or elliptical or also be other geometry, which is designed without corners, especially in its boundary contour.

It can be provided that the first cup has a circular ring geometry on its jacket wall and the second cup has a degenerate circular ring geometry on its jacket wall. In particular, it can then be provided that the first receptacle, for example the first hole, is designed to receive the first bowl and the second receptacle, for example the second hole, is designed to receive the second bowl.

It can be provided that both the first cup has a circular ring geometry of its jacket wall and the second cup has a circular ring geometry of its jacket wall. In such a configuration, the geometry of the first receptacle, for example the first hole, and the first cup on its jacket wall correspond to one another, whereas the geometry of the second receptacle, for example the second hole, and the geometry of the jacket wall of the second cup differ from one another. The above-mentioned advantages can then be particularly achieved.

However, it is also possible for the first recording and the second recording to have the same, i.e. identical, geometries. For example, the first hole and the second hole can have the same hole geometries, in particular, for example, circular geometries, in particular in their free cut, and a jacket wall of one cup has a circular ring geometry and the jacket wall of the other cup has a degenerate circular ring geometry.

It can be provided that a degenerate circular shape of a hole or a receiving opening is corner-free in its boundary contour, for example oval or elliptical. As a result, an elongated hole is formed by this degenerate circular shape. This elongated hole prevents overdetermination of the positioning and enables tolerance compensation and simplified assembly.

It can be provided that a coupling is formed between a receptacle, for example a hole, and a cup with asymmetrical play. It is precisely through this design that the above-mentioned advantages can be achieved to a particular extent.

It can be provided that the further coupling between the other receptacle, e.g. the other hole, and the other cup is designed with a symmetrical play. As a result, the backing part as a whole can be positioned relative to the wall to a certain extent, so that on the one hand it is arranged as a whole in a precisely positioned position on the wall, and on the other hand it can be arranged over as large an area as possible on the outside of the wall.

It can be provided that a screw receptacle separate from a coupling element is formed in the wall for screwing in a screw. The screw receptacle is designed in particular as a continuous opening. However, it can also be designed as a blind hole, for example. The screw receptacle preferably has an internal thread. A raised centering element, which is integrated into the wall and is therefore formed in one piece, is arranged immersed in this screw receptacle, a screw being able to be rotated through this centering element. This also means that the centering element in the basic design is designed to protrude above the surface area of the wall and is also designed to be hole-free or uninterrupted. In this state, the centering element then dips into this screw receptacle when connecting the backing part to the outside of the wall, so that the precise positioning of the backing part on the outside is further supported. Only by screwing in the screw, which means a subsequent production step, is this centering element virtually pierced and only by the penetration of this screw is a hole created in this centering element. However, since this manufacturing step of penetrating the screw takes place after a foaming process and thus after introducing a thermal insulation foam into an intermediate space between an outer wall and the wall designed as an inner wall, no foam material can penetrate through the wall in the area of this centering element, particularly in this foaming process.

Generally, the backing part is mounted on the foam side of the wall. This means that this outside of the wall on which the backing part is arranged faces this foam material. When foamed, the backing part is also covered by this foam material.

It can be provided that the household appliance has a drawer which can be pushed into the receiving space and pulled out. The drawer has a front wall which, when the drawer is pushed in, closes the receiving space at the front. This front wall has an inner wall which faces the receiving space and which represents the wall on which the rear part is arranged on an outside.

The receiving space is typically limited by additional walls that are part of an inner container. The inner container is a separate component to the drawer mentioned and therefore in particular a separate component to the wall on which the backing part is arranged.

It can be provided that an extension device for linear displacement of the wall is formed on the backing part. The pull-out device can be, for example, a telescopic rail.

The household appliance can in particular be a household refrigeration appliance, a household cooking appliance, a household dishwashing appliance or a household washing appliance.

A further aspect of the invention relates to a method for mounting a backing part on a wall of a household appliance, in particular a household refrigeration appliance, by which a receiving space of the household appliance is delimited. The backing part is arranged on an outside of this wall facing away from the receiving space, the backing part being coupled to a coupling element with a counter-coupling element on the outside. The counter-coupling element is inserted as a hole-free, raised cup into a coupling element designed as a hole.

In an advantageous embodiment of the method, a screw receptacle separate from a coupling element is formed on the wall for screwing in a screw, a raised, hole-free centering element, which is integrated in the wall, being arranged immersed in this screw receptacle, and a screw is subsequently inserted into it Hole-free centering element This hole-free centering element is screwed in and screwed into the screw receptacle.

Further advantageous embodiments of the method are provided by advantageous embodiments of the household appliance, in particular the household refrigeration device, whereby corresponding geometric configurations and interactions of components with one another enable the respective method steps. In particular, reference can be made here to the respective geometries of holes and/or cups, which then enable the backing part to rest in a precisely positioned and maximally flat manner on the outside of the wall.

The backing part is in particular made of metal and in particular is formed in one piece. The wall is in particular made of plastic, in particular by deep drawing.

The information "top", "bottom", "front", "back", "horizontal", "vertical", "depth direction", "width direction", "height direction" indicates the positions given when the device is used and arranged as intended Orientations given.

Further features of the invention emerge from the claims, the figures and the description of the figures.

Fig. 1

eine schematische perspektivische Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Haushaltskältegeräts;

Fig. 2

eine perspektivische Teildarstellung des Haushaltskältegeräts gemäß Fig. 1;

Fig. 3

eine schematische Perspektivansicht einer Frontwand einer Schublade mit schematisch gezeigten Hinterlegteilen, wobei an einem Hinterlegteil eine Auszugsvorrichtung befestigt ist;

Fig. 4

eine Ansicht auf eine Außenseite einer Wand, an welcher einstückig damit ausgebildete Näpfe und Zentrierelemente gezeigt sind;

Fig. 5

eine Ansicht auf eine der Wand zugewandte Innenseite eines Ausführungsbeispiels eines Hinterlegteils;

Fig. 6

der montierte Zustand des Hinterlegteils gemäß Fig. 5 an der Außenseite der Wand gemäß Fig. 4;

Fig. 7

eine Schnittdarstellung durch die Ausgestaltung gemäß Fig. 6; und

Fig. 8

eine Ansicht auf die Frontwand gemäß Fig. 3 in einem größeren Detaillierungsgrad als in Fig. 3.

Exemplary embodiments of the invention are explained in more detail below using schematic drawings. Show it:

Fig. 1

a schematic perspective view of an exemplary embodiment of a household refrigerator according to the invention;

Fig. 2

a partial perspective view of the household refrigeration device Fig. 1 ;

Fig. 3

a schematic perspective view of a front wall of a drawer with rear parts shown schematically, with a pull-out device being attached to a back part;

Fig. 4

a view of an outside of a wall, on which cups and centering elements formed integrally therewith are shown;

Fig. 5

a view of an inside facing the wall of an exemplary embodiment of a backing part;

Fig. 6

the assembled condition of the backing part Fig. 5 on the outside of the wall Fig. 4 ;

Fig. 7

a sectional view through the design according to Fig. 6 ; and

Fig. 8

a view of the front wall Fig. 3 in a greater level of detail than in Fig. 3 .

In the figures, identical or functionally identical elements are given the same reference numerals.

In Fig. 1 a household appliance in the form of a household refrigerator 1 is shown, which is designed for storing and preserving food. In the exemplary embodiment, the household refrigerator 1 is a refrigerator-freezer combination device. The household refrigerator 1 has a housing 2 in which several separate storage spaces for food are formed. In this context, a first receiving space 3 is formed, which in the present exemplary embodiment is designed as a refrigerator compartment. In addition, the household refrigerator 1 includes a fresh-keeping compartment 4 formed underneath in the height direction (y direction), which here represents a partial volume of the receiving space 3 and in which a different air humidity and/or a different temperature can be adjusted to the remaining partial volume of the receiving space 3 above. The fresh food compartment can also be a separate storage room.

In the exemplary embodiment it is provided that the receiving space 3 can be closed by several separate doors arranged on the front. The fresh-keeping compartment 4 can be closed in this context with a door 5, which is a front wall of a drawer that can be moved linearly in the depth direction (z direction). The remaining partial volume of the receiving space 3 can be closed by two further separate doors 6 and 7, which can be pivoted separately and independently of one another about vertical axes and thus axes oriented in the height direction. Through this configuration, on the one hand, the remaining partial volume of the receiving space 3, which is not formed by the fresh-keeping compartment 4, can be opened and closed independently of the fresh-keeping compartment 4, which is done by pivoting the doors 6 and/or 7 accordingly. Regardless of this, the fresh food compartment 4 can then be opened by opening the door 5 and thus pulling out the drawer.

The household refrigerator 1 also has, for example, two further separate receiving spaces 8 and 9, which are freezer compartments. There can also only be one freezer compartment.

The two freezer compartments can also be closed by separate doors 10 and 11, whereby in the exemplary embodiment shown, these doors 10 and 11 are front walls of drawers that can be moved linearly in the depth direction. It is shown by way of example that the lower freezer compartment can be closed by the front wall of a drawer 12 designed as a door 11, this drawer 12 being shown here in the pulled-out state.

The receiving spaces 3, 8 and 9 are delimited by an inner container, which is made in particular of plastic.

As in Fig. 1 can be seen, the drawer 12 has a container 13 next to the front wall, which represents the door 11, which is designed to hold the food.

In Fig. 2 a partial area of the household refrigerator 1 is shown in a perspective sectional view. In particular, the perspective sectional view is shown here in the area of the receiving space, which here is the fresh-keeping compartment 4. However, the further explanation can also be provided, for example, in the receiving space 8 or 9 and the drawers there.

In particular, the receiving space relating to the fresh-keeping compartment 4 is also provided with a drawer, with the door 5 here representing a front wall 14 of the drawer 15.

The front wall 14 formed as a door 5 has, as shown in Fig. 2 can be seen, an outer wall 16 and a separate inner wall 17. The outer wall 16 and the inner wall 17 are arranged at a distance from one another, so that a gap 18 is formed. A thermally insulating material, in particular an insulation foam, is preferably introduced into this intermediate space 18 Fig. 2 is not shown for clarity.

The inner wall 17, viewed in the depth direction, is closer to the volume of the fresh-keeping compartment 4 than the outer wall 16. The inner wall 17, which represents a wall that delimits a receiving space, here the fresh-keeping compartment 4, has an outside 19 and an inside 20. The outside 19 faces away from the volume of the fresh-keeping compartment 4 and faces the outer wall 16. The inside 20 faces the volume of the fresh-keeping compartment 4. The outside 19 is therefore oriented towards the foam side.

Like beyond that in Fig. 2 is indicated, this drawer 15 can be pushed back and forth linearly in the depth direction via a pull-out device 21. When closed, as in Fig. 2 is shown, the front wall 14 represents a visible component or an external part, which closes the volume of the fresh-keeping compartment 4 at the front. This also ensures the functionality of the door 5

The pull-out device 21 is arranged with a partial element, in particular a rail 22, on a side wall 23 of an inner container 24. The inner container 24 also delimits the receiving space 3 with its walls, as already explained above.

In Fig. 3 the front wall 14 is shown in a schematic perspective view. It can be seen that in the exemplary embodiment two separate backing parts 25 and 26 are attached to the inner wall 17, in particular to the outside 19. A rail is attached to each of these backing parts 25 and 26, in particular screwed on. In Fig. 3 For the sake of clarity, only one rail 27 is shown. This rail 27 is a pull-out rail that is part of the pull-out device 21. In the coupled state with the rail 22, a telescopic extension is realized here.

In Fig. 4 a section on the outside 19 of the inner wall 17 is shown. As can be seen here, a first counter-coupling element, which is designed as a first cup 28, is created in this inner wall 17. In addition, a second cup 29 is integrated at a distance from it and thus as a further separate counter-coupling element and is therefore designed in one piece. The two cups 28 and 29, which are also designed as domes or domes, for example, are elevations that rise out of the plane of this outside 19. In the embodiment shown, the cups 28 and 29 are designed to protrude forward from the plane of the figure. The cups 28 and 29 are designed to be hole-free and therefore uninterrupted, so that the outside 19 and thus also the entire inner wall 17 have no continuous opening in this area.

As in Fig. 4 It can also be seen that 19 centering elements, in the exemplary embodiment two centering elements 30 and 31, are integrated on this outside and are therefore formed in one piece. The centering elements 30 and 31, which are smaller than the cups 28 and 29, are also designed without holes and rise out of the plane of the figure. The cups 28 and 29 are created by deep drawing. The same can be provided with the separate centering elements 30 and 31.

In Fig. 5 An exemplary embodiment of a backing part is shown. The backing part 32 is shown here as an example. It is designed like a plate and has curved webs 33 ( Fig. 6 ) and 34 ( Fig. 6 ) on. The backing part 32 has receptacles 35 and 36 as coupling elements in the plate-shaped part. The first receptacle 35 is designed here as a hole and the further receptacle 36 (which forms the further coupling element), which is separate and spaced from it, is also designed as a hole. Like here too can be seen, the first hole is funnel-shaped in a hole axis A oriented perpendicular to the plane of the figure. Likewise, the second hole is funnel-shaped when viewed in a hole axis B perpendicular to the plane of the figure. The funnel shape is given by the fact that a larger clear width is formed at a hole entrance 35a than at a hole exit 35b. The same is formed for a hole entrance 36a in relation to a hole exit 36b at the second hole. As shown in Fig. 5 As can be seen, this funnel shape forms a funnel bottom 38 at the first hole, which has a free cut 39. This free cut 39 has a boundary contour 40, which here represents a degenerate circular shape.

In contrast, in the exemplary embodiment, the second hole 32 has a funnel bottom 41 which has a free cut 42. This free cut 42 is limited by a boundary contour 43, which here has a circular shape.

In addition, in this plate-shaped part of the backing part 32, a screw receptacle 44 is designed as a continuous hole into which the centering element 30 is immersed, as shown in FIG Fig. 6 can be recognized. In addition, in the exemplary embodiment, a further screw receptacle 45 is formed in this backing part 32, which is also designed as a through hole. In the exemplary embodiment, both screw receptacles 44 and 45 have internal threads into which a respective screw, not shown, can be screwed.

When depicted in Fig. 4 It can be seen that the first cup 28 has a jacket wall 28a, which here has a circular ring geometry. A roof 28b of this cup 28 is formed as a convex hood. In the exemplary embodiment it is provided that the second cup 29 also has a jacket wall 29a, which is formed as a circular ring geometry, with a roof 29b also being designed as a convex hood. In this exemplary embodiment, the geometries of the cups 28 and 29 are therefore particularly the same. According to the illustration in Fig. 5 However, the geometries of the holes are different. In particular, it is provided here that the geometry of the first hole is different to the geometry of the first cup 28, which is in the installed state, as is also the case in Fig. 6 is shown, dips into the first hole and is arranged to dip through the free cut 39. In contrast is the geometry of the second hole equal to the geometry of the jacket wall 29a of the second cup 29, which dips into the second hole in the assembled state and is arranged to dip through the free cut 42, as also shown in Fig. 6 can be recognized.

In particular, it is provided that the first cup 28 is arranged with an asymmetrical play in the free cut 39 due to its geometry, in particular its jacket wall 28a. In particular, it is provided that the second cup 29 with its jacket wall 29a is arranged with a symmetrical play in the free cut 42 of the second hole, this also being in Fig. 6 can be recognized.

In the representation already mentioned in Fig. 6 the backing part 32 lies flat against the outside 19. In this context, an inside 32a of the plate-shaped part of the backing part 32 is also glued to the outside 19, in particular.

In particular, the symmetrical, minimal play between the jacket wall 29a and the contour 43 enables precise positioning. The asymmetrical play between the jacket wall 28a and the contour 40 enables precise positioning to the left and to the right, as is also shown in the illustration in Fig. 6 Allows for upward and downward play to compensate for tolerances.

In Fig. 7 is a sectional view through the design in Fig. 6 shown. The funnel-shaped shape of the hole as well as the hole can be seen here. Due to this funnel shape, it is also achieved that the funnel bottom 38, viewed in the direction of the axis A, is designed at a distance from a transition 46 between the jacket wall 28a and the outside 19. Since a radius is formed at this transition 46, in particular due to deep drawing when producing the cups 28 and 29, this spacing and in particular the funnel shape of the hole is advantageous. The same also applies to a transition 37 of the bowl 29. As in Fig. 7 can be seen, the hole and correspondingly the hole is formed by a step and this funnel shape is formed by an individual embossing. The wall thickness of the backing part 32 is the same over the entire depth of the hole, so that the thickness of the funnel bottom 38 is equal to or substantially equal to the material thickness or wall thickness of that wall area of the backing part with which the funnel-shaped area of the Hole is limited, same. The same applies to the hole. As can be seen here, in the exemplary embodiment the centering elements 30 and 31 are conical. In Fig. 7 the state is shown in which the backing part 32 is arranged on the outside 19, but no screws have yet been screwed into the screw receptacles 44 and 45 and thus the centering elements 30 and 31 have not yet been broken through by such screws. These screws are screwed in from the inside 20. This is the side of the inner wall 17 facing away from the screws.

In Fig. 8 the inner wall 17 is more detailed than in Fig. 3 shown, with a view of the outside 19, which is the foam side, being shown here. Two backing parts 32 can be seen here. In addition, an opening 47 is formed in this inner wall 17, which is a cable passage. Here it is formed directly below one of the two backing parts 32 in the inner wall 17.

Reference symbol list

1

Household refrigeration device

2

Housing

3

Recording room

4

Fresh food compartment

5

door

6

door

7

door

8th

Recording room

9

Recording room

10

door

11

door

12

Drawer

13

container

14

Front wall

15

Drawer

16

external wall

17

Interior wall

18

space

19

Outside

20

inside

21

Pull-out device

22

Partial element

23

Side wall

24

inner container

25

backing part

26

backing part

27

rail

28

bowl

28a

mantle wall

28b

Roof

29

bowl

29a

mantle wall

29b

Roof

30

Centering element

31

Centering element

32

backing part

32a

inside

33

web

34

web

35

Recording

35a

hole entrance

35b

hole exit

36

Recording

36a

hole entrance

36b

hole exit

37

crossing

38

funnel bottom

39

Free cut

40

Boundary contour

41

funnel bottom

42

Free cut

43

Boundary contour

44

Screw mount

45

Screw mount

46

crossing

47

Breakthrough

A

hole axis

Claims (13)

1. Household appliance, in particular household refrigeration appliance (1), comprising a receiving space (3, 4, 8, 9), in particular for foodstuffs, which is delimited by walls (17, 23) of the household appliance, and comprising a backing part (32) which is mounted on an outer side (19) of one of said walls (17, 23), said outer side facing away from the receiving space (3, 4, 8, 9), wherein the backing part (32) has a coupling element which, when the backing part (32) is mounted on the outer side (19), is coupled to a counter-coupling element which is on the outer side (19), wherein the counter-coupling element is formed as a raised cup (28, 29) without holes and the coupling element is formed as a receptacle (35, 36) through which the cup (28, 29) extends in the mounted state, characterised in that the receptacle (35, 36) is formed as a funnel-like hole, in which the receptacle (35, 36) viewed in the direction of a receptacle axis, has a depth and tapers at least partially relative thereto, so that a width of the receptacle at a funnel inlet formed by a receptacle opening is designed to be larger than at a funnel base.
2. Household appliance according to claim 1, characterised in that the cup (28, 29) is formed in a cupola-like or dome-like manner.
3. Household appliance according to claim 1 or 2, characterised in that the funnel shape is formed by, in particular, a stamped step in the wall (17, 23) and a cutout (39, 42) is formed on the funnel base (38, 41) for passing through the cup (28, 29).
4. Household appliance according to one of the preceding claims, characterised in that at least two separate cups (28, 29) which are positioned spaced apart from one another are formed in an integrated manner in the wall (17, 23) on the outer side (19) and a corresponding number of holes (35, 36) are formed in the backing part (32).
5. Household appliance according to claim 4, characterised in that the holes (35, 36) have different geometries and/or the cups (28, 29) have different geometries.
6. Household appliance according to claim 5, characterised in that the hole forming the receptacle (35, 36), in particular in a cutout (39, 42) for passing through a cup (28, 29), has a circular geometry and the hole forming a further receptacle (35, 36), in particular in a cutout (39, 42) for passing through a cup (28, 29), has an irregular circular shape.
7. Household appliance according to claim 5 or 6, characterised in that the one cup (28, 29) has an annular geometry of its jacket wall (28a, 29a) and the other cup (28, 29) has an irregular annular geometry or an annular geometry of its jacket wall (28a, 29a).
8. Household appliance according to one of the preceding claims 4 to 7, characterised in that a coupling between a receptacle (35, 36) and a cup (28, 29) is formed with asymmetrical play and, in particular, the further coupling between the other receptacle (35, 36) and the other cup (28, 29) is formed with symmetrical play.
9. Household appliance according to claim 8, characterised in that a screw receptacle (44, 45) which is separate from a coupling element is formed in the wall (17, 23) for screwing in a screw, a raised centring element (30, 31) which is formed in an integrated manner in the wall (17, 23) penetrating in this screw receptacle and the screw being able to be screwed through said centring element.
10. Household appliance according to one of the preceding claims, characterised in that the household appliance has a drawer (12, 15) which is mounted so as to be able to be pushed into and pulled out of the receiving space (3, 4, 8, 9), wherein the drawer (12, 15) has a front wall (11, 14) which in the pushed-in state of the drawer (12, 15) closes the receiving space (3, 4, 8, 9) on the front side, wherein the front wall (11, 14) has an inner wall (17) as a wall which faces toward the receiving space (3, 4, 8, 9), and the backing part (32) is arranged on the outer side (19) of the inner wall (17) facing away from the receiving space (3, 4, 8, 9).
11. Household appliance according to one of the preceding claims, characterised in that a pull-out device (21) of the household refrigeration appliance (1) is fastened to the backing part (32).
12. Method for mounting a backing part (32) on a wall (17, 23) of a household appliance, in particular a household refrigeration appliance (1), a receiving space (3, 4, 8, 9) of the household appliance being delimited thereby, wherein the backing part (32) is arranged on an outer side (19) of this wall (17, 23) facing away from the receiving space (3, 4, 8, 9), wherein the backing part (32) is coupled by a coupling element to a counter-coupling element on the outer side (19), wherein the counter-coupling element is inserted as a raised cup (28, 29) without holes into a coupling element formed as a receptacle (35, 36), characterised in that the receptacle (35, 36) is formed as a funnel-like hole, in which the receptacle (35, 36) viewed in the direction of a receptacle axis, has a depth and tapers at least partially relative thereto, so that a width of the receptacle at a funnel inlet formed by a receptacle opening is designed to be larger than at a funnel base.
13. Method according to claim 12, characterised in that a screw receptacle (44, 45) which is separate from a coupling element is formed on the wall (17, 23) for screwing in a screw, a raised centring element (30, 31) without holes, which is formed in an integrated manner in the wall (17, 23), being arranged so as to penetrate in this screw receptacle and subsequently a screw is screwed into the centring element (30, 31) without holes, penetrating said centring element, and screwed in the screw receptacle (44, 45).

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