CN115077183A

CN115077183A - Rear part for a domestic refrigeration device component, assembly comprising a domestic refrigeration device component and a rear part, and method for assembling

Info

Publication number: CN115077183A
Application number: CN202210223735.5A
Authority: CN
Inventors: A·费尔德迈尔
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2021-03-11
Filing date: 2022-03-09
Publication date: 2022-09-20
Also published as: EP4056935A1; DE102021202364A1

Abstract

One aspect of the invention relates to a rear part (7) for a domestic refrigeration device component (1), comprising a base wall (18) and side walls (19, 20, 21, 22) which end at the base wall (18) such that a basin with a volume space (23) delimited by the walls (18 to 22) is formed by the base wall (18) and the side walls (19, 20, 21, 22), and comprising at least one holding part (28) which is provided to be coupled with a corresponding holding part (30) of the domestic refrigeration device component (1) if the rear part (7) is mounted in a retaining manner on the domestic refrigeration device component (1), characterized in that the holding part (28) is provided in the volume space (23). Further aspects also relate to an assembly (17) and a method.

Description

Rear part for a component of a domestic refrigeration device, assembly comprising a component of a domestic refrigeration device and a rear part, and method for assembling

Technical Field

One aspect of the invention relates to a back piece for a component of a domestic refrigeration appliance. The back piece has a base wall. The rear part also has a side wall which ends at the base wall, so that a basin with a volume limited by the wall is formed by the base wall and the side wall. Furthermore, the rear part has at least one holder, on which a corresponding holder of the domestic refrigeration appliance component snaps if the rear part is mounted in a retaining manner on the domestic refrigeration appliance component. Another aspect of the invention relates to an assembly having such a back piece and a component of a domestic refrigeration appliance. Another aspect of the invention relates to a method for assembling such a rear part on a component of a domestic refrigeration appliance.

Background

It is known in domestic refrigeration appliance components that they are thermally insulated. For example, in the case of a door of a domestic refrigerator, a front wall and a rear wall are present, between which an intermediate space is formed. A thermal insulating material is introduced in the intermediate space. The further domestic refrigeration device component can be, for example, a housing of the domestic refrigeration device. Furthermore, in the case of this domestic refrigeration appliance component there is an outer housing and an inner container arranged therein. The inner container limits a receiving space for the food item. The receiving space may be a cold storage compartment or a freezer compartment, for example. An intermediate space is likewise formed between the outer housing and the inner container, which intermediate space is filled with a thermally insulating material.

It is also known in domestic refrigeration appliance components to mount additional components thereon. This may be an electronic module, for example. However, other additional components may be provided.

In the case of domestic refrigeration appliance components, it is therefore necessary to provide a corresponding free space for this purpose, in order to be able to install such additional components subsequently. Since such add-on components are usually installed after the introduction of the thermal insulation material into the intermediate space, measures can be taken such that after the introduction of the thermal insulation material there is also structural space for the add-on or the add-on components. For this purpose, a rear part is usually used, which is arranged in the intermediate space. If the rear part is assembled, then usually a thermal insulation material is subsequently introduced into the intermediate space. It is thus possible to achieve with this rear part that the thermal insulation material, which may be in particular a thermal insulation foam, cannot unintentionally come out of the defined recesses and the like. Furthermore, the following are avoided: such foam will fill the structural space required for such an add-on.

A rear part known from the prior art is shown, for example, in a perspective view in fig. 2. The rear piece 100 has a base wall 101. The

side walls

102, 103, 104 and 105 end on the base wall 101. The design of the rear part 100 with walls provided in this connection is of the pot type. The side walls 102 to 105 end at a specific angle on the base wall 101. Fig. 2 shows the rear part 1 in the assembled state on the wall 106 of the component of the domestic refrigeration appliance. In this assembled state, the recesses in the arms 106, which are not visible in fig. 2, are covered by the rear part 100. In order to fasten the rear part 100 to the wall 106, a web 107 is provided, which is formed integrally on the wall 106. Tab 107 snaps over the outside 108 of sidewall 103. For this purpose, the

catches

109 and 110 are formed on this outer side 108. These catches are formed integrally with the side wall 103.

Fig. 3 shows the design according to fig. 2 in a perspective sectional view. In this embodiment, therefore, fastening with the web 107 outside the rear part 100 is provided.

In the sectional view according to fig. 3, a minimum gap 112 is formed between the edge flange 111 of the rear part 100 and the side wall 103. The plate-shaped tab 107 must pass through this small gap during assembly. The gap 112 has a width b in the conventional design, which is, for example, 1 mm. It is therefore very laborious and error-prone to manufacture separately already for this reason. In the case of a penetration in this connection, the tab 107 can bend and such penetration can be prevented up to the end position of the catch. Furthermore, the gap 112 cannot be produced with the same width b in principle due to manufacturing tolerances. Furthermore, problems can arise in this way when the tab 107 is passed through.

Another disadvantage may be that the web 107 cannot be bent exactly 90 ° in relation to the remaining surface of the wall 106 in terms of manufacturing technology. The web 107 is therefore always inclined by a few degrees in the direction of the recess 113 formed in the wall 106. This additionally makes the penetration of the tab 107 into the gap 112 difficult.

Furthermore, the design of the holder or

catch

109 and 110 is designed in such a way that, for a secure locking, an orientation is provided which is inclined toward the outer side 108 of the side wall 103. In principle, a certain elasticity of the

latching elements

109 and 110 should be achieved in this case when the web 107 is threaded. In the production of the rear part, the

clips

109 and 110 are pulled inward by internal stresses, in particular temperature stresses, during cooling after injection molding, so that they narrow or reduce the width of the gap 112. This effect is to be expected, so that a certain lateral pressing of the

catches

109 and 110 will thereby occur upon penetration of the web 107 and then in the final position again catch the

deflected catches

109 and 110 to the web 107. However, this is not large enough in practical facts and manufacturing possibilities to close the gap 112 to a sufficient extent and reliably achieve the snap-in solution described above. In this case, disadvantages occur in the snap-in, i.e. there is an insufficient snap-in. It is desirable here for the width of the gap 112 to be approximately 0.3 mm in configuration in the region of the upper ends of the

catches

109, 110. This is very difficult to achieve in injection molding tools, however, since a relatively thin wall thickness of the tool is required in this region. The tab 107 is typically 0.5 mm thick. Thus, with this desired configuration, only a maximum overlap of 0.2 mm occurs between the tab 107 and the

snaps

109, 110. Furthermore, the manufacturing-related radii on the respective edges further reduce the holding force. In reality, therefore, no form-fitting snap-fit between the snap-in

elements

109, 110 and the web 107 frequently occurs. This requires: the rear piece 100 must additionally be fastened to the wall 106 with a separate adhesive tape. There are therefore still certain possibilities: i.e. thermal insulation foam, will be present at the interface to the rear piece 100 in the region of this gap 113. Furthermore, the gap 112, which is open outside the rear part 100, must additionally be sealed with adhesive tape.

As can be seen, these

clips

109, 110 are arranged on the edge flange 111 and are therefore also positioned at a distance from the outer side 108 of the side wall 103.

Disclosure of Invention

The object of the invention is to provide a rear part which is improved with respect to assembly possibilities and sealing function. It is also an object to provide a component, which is improved in this respect. The object of the invention is, furthermore, to provide an assembly method in which the assembly of the rear part on the component of the domestic refrigeration appliance is improved.

The object is achieved by the inventive back piece, assembly and method.

One aspect of the invention relates to a back piece for a component of a domestic refrigeration appliance. The back piece has a base wall. The rear part furthermore has a side wall which differs from the base wall. The side wall terminates at a base wall. In particular, the side walls end with edges angled on the edges of the base wall. A basin is formed by the base wall and the side walls. The volume of the rear part is formed or limited by the base wall and the side walls. In particular, the volume is completely bounded by the side walls and the base wall, which means that the volume has no holes or penetrations in the region of the walls. In particular, both the side walls and the base wall are therefore designed without through-openings or holes.

Furthermore, the rear part has at least one holding part. The holder is expediently designed to be coupled, in particular snap-fit, to a corresponding holder of a component of the domestic refrigeration appliance. This is the case if the rear part is mounted in a retaining manner on the component of the domestic refrigeration appliance. The holder is disposed in the volume. A particularly advantageous rear part is provided by such a design. Since with this design it is no longer necessary to have any similar through-openings in the side walls or base wall on the rear part for guiding the corresponding holding part through. The following can thus be achieved: i.e. the volume space has no interface to the exterior of the rear piece in the region of the side wall and the base wall. The volume space is therefore open only on the side opposite the base wall. In other aspects, the volume is completely bounded and closed by the side walls and the base wall. Thus, by arranging and positioning the holder inside the volume, a simpler assembly solution is also achieved. The counter holder no longer has to be guided through a very thin gap or clearance, as is explained with regard to fig. 2 and 3. The counter-holder can be introduced into the volume space through an open side of the volume space opposite the base wall. This is a significant simplification in terms of assembly. Furthermore, the mechanical coupling connection between the holder and the corresponding holder is thereby completely arranged within the volume space. Thus, if the thermal insulation material is outside the rear part and therefore directly bears against the outer side of the base wall and the outer side of the side wall, the mechanical coupling connection can be said to be arranged completely encapsulated with respect to the thermal insulation material. In this embodiment, therefore, there is no interface in the region of the base wall and the side wall, through which interface the thermal insulation foam can enter the volume from outside the rear part. In this connection, therefore, both the side walls and the base wall are of non-porous or, in particular, seamless design. Thus, if the rear part is provided on a component of the domestic refrigeration appliance, the counter holder is also provided without contact with the thermal insulation material.

The mechanical coupling connection between the holder and the counter-holder can also be applied by applying a mechanical coupling connection, which can also be accessed after the introduction of the thermal insulation material and possibly be reworked. This also means in particular: access to the holder and the corresponding holder through the recess in the domestic refrigeration appliance component is also possible after introduction of the thermal insulation material into the intermediate space of the domestic refrigeration appliance component. This recess is completely covered by the rear part toward the foam side.

In one embodiment, a carrier wall is provided in the volume space in addition to the side wall and the base wall, into which carrier wall the holder is integrated. The carrier wall is a wall separate from the side wall and the base wall. It is thereby also possible to achieve: the holder is arranged on a component which is stable in relation to this. Thereby improving the mechanical coupling with the corresponding holder. Unintentional deformations can thereby be avoided.

In one embodiment, provision is made for an introduction groove to be formed in the volume. The holder extends into the introduction groove. Furthermore, the insertion groove is expediently designed for insertion of the counter holder. The corresponding holding element is thereby snapped into the holding element in the insertion groove, which is formed completely in the volume of the rear element. In this way, a partial volume region is formed in the volume space, in which partial volume region the mechanical coupling between the holding element and the counter-holding element is also provided in a protected manner. In particular in the case of an after-assembly of the attachment part in the volume space of the rear part, damage to the coupling connection can thus be avoided. Furthermore, this also avoids: the attachment piece, for example an electronic module, is not inadvertently damaged by the corresponding holder or the holder during assembly.

In one embodiment, the lead-in slot is directly bounded by a carrier wall.

Furthermore, in one embodiment, the lead-in groove is directly bounded by the side wall.

In one embodiment, the introduction groove is configured with a clear width of between 5 mm and 8 mm, in particular between 6 mm and 7 mm, in particular 6.5 mm. The clear width is in particular the distance between the support wall and the opposite side wall, which each directly delimits the insertion groove or the volume of the insertion groove. A relatively wide introduction groove is provided by such a design. The insertion of the counter-holder can thereby be achieved particularly simply and with a clear aim. This prevents unintentional deformation or bending of the associated holder during assembly, in particular during insertion into the insertion groove.

In one embodiment, the lead-in slot is configured as a side attachment structure or side extension on the sidewall. For this purpose, the side wall that restricts the introduction groove is configured to have a protrusion. This is a further very advantageous embodiment, since the actual volume space, which can be provided by the rear part for the attachment to be assembled, is not reduced thereby. On the other hand, the size of the volume space of the rear part is increased laterally by the introduction groove. The projection can be configured in a cassette. The side walls can be formed in an angled manner in a multiple bending in their non-linear and non-planar design.

In one embodiment, the protrusion extends over part of the length of the side wall. In particular the portion length is between 30% and 70%, in particular between 40% and 50%, of the total length of the side wall measured along the longitudinal axis of the side wall. This results in a correspondingly dimensioned body which enables a reliable mechanical introduction of the counter holder and provides a mechanically stable coupling and fixing of the holder with the counter holder in the introduction groove.

In one embodiment, a free space is formed between an edge section of the edge of the carrier wall facing the base wall and the base wall. This is an advantageous embodiment in this respect in order to achieve a reliable snap-fit of the counter holder. That is, in the final state of assembly, the counter-holder fits in the free space between the base wall and the edge section of the edge of the carrier wall. A space-saving solution is thereby also achieved for this mechanical coupling.

In one embodiment, the retaining element is arranged on an edge section of the carrier wall and extends from the carrier wall in a projecting manner into the volume of the introduction groove. This provides an orientation of the holder, wherein the orientation is oriented perpendicular to the insertion direction of the corresponding holder into the insertion groove. The following is thus automatically achieved: i.e. the counter holder slides along the holder when it is introduced into the introduction slot, it is possible in particular also for a relative movement to occur between the two parts in connection with this and for a subsequent snap-in of the holder past the counter holder to take place when the counter holder is subsequently introduced into the introduction slot in the introduction direction. In this rear snap-in state, the counter holder moves into this above-mentioned free space.

In one embodiment, a guide is provided on the inner side of the side wall that restricts the introduction groove. The guide member is used to automatically guide the corresponding holder member toward the holder member when the holder member is introduced into the introduction groove. The guide is in particular arranged in a stationary manner. This allows the corresponding holder to be moved in a particularly defined and targeted manner in the introduction groove in a direction which is particularly advantageous for the snap-in engagement with the holder. In particular, the guide is formed in one piece with the side wall.

In one embodiment, the guide is configured to guide the wedge. This makes it possible to achieve a particularly continuous and uniform guidance of the respective holder in the introduction groove in the direction of the holder. The guide wedge has a guide surface inclined toward the holder. The guide surface is provided for sliding the counter holder along (endlandgleiteen) when the counter holder is introduced into the introduction groove. In addition or alternatively thereto, provision can be made for the guide surface to be designed for retaining the latching position of the counter holder on the holder. In such a design, the guide wedge has a multiplicity of functions. In this way, it is particularly advantageous to achieve a movement guidance for achieving the snap-in state, but also to maintain the snap-in state particularly reliably. This makes it possible to prevent unintentional release of the snap-in state particularly reliably.

In one embodiment, it is provided that the side wall of the rear part has an edge which faces away from the base wall. In one embodiment, a circumferential sealing flange is molded over the rim. The sealing flange is closed around and is designed without interruption. In particular, the sealing flange is first bent outward and toward the base wall at the interface to the edge of the side wall. Furthermore, the sealing flange then has a profile which is bent in the other direction and thus away from the base wall. A particularly advantageous sealing solution is achieved by this arrangement and design of the sealing flange. A particularly effective sealing of the connection is then achieved by this embodiment if the rear part is mounted and abuts against a wall of the domestic refrigeration device component. Therefore, also in this region: the thermal insulating foam can come out between the rear part and the wall of the domestic refrigeration appliance component.

In one embodiment, the at least one retaining member is configured as a wedge. On the one hand, this geometry enables a very continuous and uniform sliding of the respective holder along the holder during insertion into the insertion groove. Unintentional wedging or jamming can thereby be avoided. In addition, a secure snap-in connection with the counter holder can also be achieved by this design.

In one embodiment, it is provided that the at least one holding element is arranged in a stationary manner. The holder is designed in particular to be non-elastic. This means that such a holder is a rigid part with which the counter-holder comes into contact and is guided along when it is introduced into the introduction groove. Due to the rigid positioning of the holding element, the counter holding element is elastically bendable in this embodiment. In order to achieve a reliable snap-fit, in this embodiment the counter holder, which is elastically bent during insertion, is designed in such a way that it snaps back against the rigid holder from behind.

In particular, it is provided that, in the state of the snap-fit between the holder and the counter holder, the counter holder is arranged with its entire width overlapping the bearing surface or the snap-fit surface of the holder. A particularly reliable snap-in is thereby also achieved. In particular, the counter holder is a plate-like component, in particular a web made of sheet metal. The sheet thickness is provided entirely on the bearing or snap-on face of the holder. Form-fitting snap-on hooks.

In one embodiment, the rear piece is constructed in one piece. The rear part is made of plastic in particular. In particular, the rear part is designed as an injection molding part.

A further aspect of the invention relates to an assembly comprising a rear part according to the above-mentioned aspect or an advantageous design thereof and a component of a domestic refrigeration appliance which is independent of the rear part. The domestic refrigeration appliance component has a wall. Through-going openings are formed in the wall. The rear part is arranged directly on the wall and covers the recess. In particular, the rear part is held on the wall only by a mechanical coupling of the at least one holding part with the at least one counter-holding part.

A further aspect of the invention relates to a method for assembling a rear part, which is designed in particular according to the above-mentioned aspect or its advantageous embodiments. The rear part is mounted on a component of the domestic refrigeration appliance. The following steps are carried out for this purpose:

-providing a domestic refrigeration device component, wherein a through-going opening is formed in a wall of the domestic refrigeration device component;

-providing a back-up;

guiding the rear piece and the wall close to each other in the region of the gap (Aneinenderafufluen), wherein the rear piece is oriented such that the volume space of the rear piece which is open only on the side opposite the base wall of the rear piece faces the wall;

-introducing at least one corresponding holder of the wall from the open side of the volume into an introduction groove in the volume, in particular in the volume of the rear part, wherein the introduction takes place during said mutually approaching guidance;

the corresponding holder and the holder of the rear part are snapped into place in the volume space, so that the rear part rests in a retaining manner against the wall and the recess is completely covered by the rear part.

The advantages achievable with this assembly method have already been explained above for the rear part and for the assembly. These advantages apply here accordingly.

The insertion groove is open on the side facing away from the base wall. The opening is in particular a partial region of the opening which forms the volume of the rear part. In this assembly method, the counter holder is pressed in the direction of the holder in a targeted manner by a guide in the introduction groove, which is separate and distinct from the holder, when the counter holder is introduced into the introduction groove. The introduction direction associated therewith is oriented perpendicularly to the plane of the base wall. In the case of a linear movement of the rear part onto the wall, the corresponding holder is slightly deflected or bent towards the holder by means of the guide. During the further insertion process, the plate-like counter holder slides past the at least one holder and snaps on the latter from behind.

The counter-holder is in particular a plate. The counter-holder is in particular a sheet metal strip (or sheet metal strip). The domestic refrigeration device component is in particular designed as a sheet metal (or metal plate). In particular, the wall is formed in one piece. The corresponding holder is oriented in the respective orientation after bending. This orientation is curved out of the plane in which the openings in the wall are formed. The corresponding holder preferably has a snap tab. The snap tabs are formed by recesses (Freischnitte) in the corresponding holder. In particular, a catch is formed which projects over time and which catches the holder from behind. The free space, into which the holding element, in particular in its wedge-shaped form, can protrude, is realized by a recess in the corresponding holding element.

The terms "upper", "lower", "front", "rear", "horizontal", "vertical", "depth direction", "width direction", "height direction" describe the position and orientation of the rear part or the household appliance component in the intended use and in the intended arrangement.

Further features of the invention emerge from the claims, the figures and the description of the figures. The features and feature combinations described above in the description and in the following description of the figures and/or shown in the figures individually are usable not only in the respectively stated combination but also in other combinations or individually without departing from the scope of the present invention. The embodiments of the invention which are not explicitly shown in the drawings and which are not, however, known and illustrated by means of a combination of features which are separate from the illustrated embodiments, are therefore also to be regarded as included and disclosed. Also the embodiments and feature combinations which do not have all the features of the originally written independent claims are to be regarded as disclosed.

Drawings

Embodiments of the invention are further elucidated below on the basis of schematic drawings. The figures show:

FIG. 1 a: a perspective view of one embodiment of a domestic refrigeration appliance component;

FIG. 1 b: a simplified schematic view of an embodiment of a domestic refrigeration appliance component disposed on an embodiment of a domestic refrigeration appliance;

FIG. 2: a perspective view of an assembly of a wall with a rear part and a domestic refrigeration device component, known from the prior art;

FIG. 3: a cross-sectional view of the assembly according to fig. 2;

FIG. 4: according to the invention, a perspective view of an embodiment of an assembly with an embodiment of a rear part according to the invention, which is fitted to a wall of a component of a domestic refrigeration appliance;

FIG. 5: a perspective cross-sectional view of an assembly according to the invention;

FIG. 6: another perspective cross-sectional view of the assembly according to fig. 4; and

FIG. 7: the view according to fig. 6 is shown in a perspective view different from fig. 6.

In the figures, identical or functionally identical components are provided with the same reference numerals.

Detailed Description

Fig. 1 shows a domestic refrigeration device component 1. In the exemplary embodiment, the domestic refrigeration device component is in particular a door 2 for a domestic refrigeration device. The door 2 has a wall 3, which here is an outer wall. Furthermore, the door 2 has a further wall 4, which is an inner wall. An intermediate space is formed between the

walls

3 and 4. This intermediate space is filled with a thermal insulating material, in particular insulating foam, in the finished state of the door 2.

In the embodiment, the wall 3 has a through-going opening 5. The intermediate space between the

walls

3 and 4 is freely accessible through this gap 5. The recess 5 is provided for a separate attachment piece 6 (as shown in fig. 1 b) that can be arranged. The add-on part can be in particular an electronic module. The electronic module may be, for example, an operating and/or display unit.

In order to prevent the insulating foam from exiting from this intermediate space through the recess 5 during the production of the door 2 and thus to prevent the free space in the recess 5 from remaining, a separate rear part 7 is provided, as is schematically illustrated in fig. 1 b. The rear part 7 is arranged in the intermediate space 8, as can be seen in fig. 1 b. The rear part 7 is arranged on the inner side or rear side 3a of the wall 3 facing the intermediate space 8.

As can be seen in fig. 1, a mounting space 9 for the attachment piece 6 is formed in the region of the recess 5 by means of the rear piece 7. The fitting space 9 is provided in particular by a volume space 10 of the rear part 7. The direct arrangement of the rear part 7 on the rear side 3a of the wall 3 can be seen in fig. 1 b.

Fig. 1b shows an exemplary embodiment of a domestic refrigeration device 11. The domestic refrigerator can be, for example, a refrigerator or freezer or a refrigerator-freezer. The domestic refrigerator 11 is designed for storing and preserving food products. In addition to the door 2, the domestic refrigerator 11 also has a housing 12. The housing has an outer shell 13 and an inner container 14. A thermal insulation material is introduced into the intermediate space 15 between the outer shell 13 and the inner container 14. A receiving space 16 for the food product is limited by the inner container 14. The door 2 is movably disposed on the housing 12.

Fig. 4 shows a perspective view of a partial region of the door 2. Here, an assembly 17 is shown. The assembly 17 has a rear piece 7 and a wall 3. The view in fig. 4 shows the viewing direction towards the rear side 3a of the wall 3. The rear part 7 is shown in the final state fitted on the wall 3.

The rear part 7 is in particular formed in one piece. The back piece 7 is in particular an injection molded part. The rear part is made of plastic in particular. The rear piece 7 has a base wall 18. The base wall 18 is a back wall in the embodiment shown. Furthermore, the rear part 7 has

side walls

19, 20, 21 and 22. These side walls 19 to 22 are arranged at an angle to the base wall 18. The side walls 19 to 22 open at the rear edge to the side edges of the base wall 18. A basin with a volume space 23 (fig. 5) formed by these walls 18 to 22 is formed by the base wall 18 and the side walls 19 to 22. These walls 18 to 22 are free of holes or gaps, so that the volume space 23 is completely closed by these walls 18 to 22. The volume space 23 has an opening 24 only on the side opposite the base wall 18 (fig. 5). Fig. 5 shows a perspective sectional view of the assembly 17 according to fig. 4 in the region of the section line V-V.

As can also be seen in fig. 4, the side wall 20 does not have a straight or planar design. The side wall 20 has a projection 25. Thereby expanding the volume 23 sideways. The projection 25 is here of angular or box-shaped design. The projections 25 are configured to be disposed medially along the length of the sidewall 20. Accordingly, in one embodiment, a tab 26 is also formed on the opposing sidewall 22.

These

projections

25, 26 each form a lateral attachment structure. The insertion groove 27 as shown in fig. 5 can be realized by this lateral attachment structure.

The holder 28 of the rear piece 7 is arranged completely in the volume space 23.

In one embodiment, it is provided that the rear part 7 has a support wall 29. The carrier wall 29 is a wall independent from the side walls 19 to 22 and the base wall 18. The carrier wall 29 is arranged completely within the volume space 23. The holding element 28 is formed on this carrier wall 29. The holding element is in particular formed in one piece with the carrier wall. The holding element 28 is designed in the form of a wedge. The retainer 28 is a snap-fit. The holder is configured for mechanical coupling, in particular snap-in, with a corresponding holder 30. The counter holder 30 is not an integral part of the rear part 7. The counter holder 30 is a component of a domestic refrigeration device, here a door 2, in particular a wall 3. The counter holder is formed by bending of the sheet material of the wall 3. In particular, the counter holder 30 is a plate-shaped tab. The plate-shaped tab preferably has a corresponding catch 31. Furthermore, the counter holder 30 also has a recess 32 in its plate-like design. The holder 28 can project into this recess 32 if a coupling state, in particular a snap-in state, is achieved between the holder 28 and the counter-holder 30. In the mounting end position shown in fig. 5, the counter catch 31 acts from behind on or catches behind the holder 28.

As can be seen, the retaining element 28 protrudes from the carrier wall 29, i.e. projects into the introduction groove 27. The insertion groove 27 is delimited in the exemplary embodiment shown on the one hand directly by the support wall 29 and on the other hand by the side wall 20, in particular by a subregion of the delimiting projection 25 of the side wall 20. The width b1 of the introduction slot 27 is preferably between 6 mm and 7 mm. The insertion groove 27 is expediently designed for insertion of the corresponding holder 30. The introduction groove 27 has an opening 33 through which the corresponding holder 30 can be introduced. The opening 33 faces away from the base wall 18. The opening 33 is a sub-region of the opening 24 of the volume 23. As can be seen, this insertion groove 27 is also formed as a lateral attachment structure by the projection 25. The introduction groove 27 is completely closed outward except for the opening 33. The projection 25 extends over part of the length of the side wall 20. The partial length is in particular between 30% and 70%, in particular between 40% and 50%, of the total length of the side wall 20.

As can also be seen in fig. 5, a free space 35 is formed between the inner side 18a of the base wall 18 and an edge section 34a of the edge 34 (fig. 6) of the carrier wall 29. The corresponding catch 31 can project into the (preferably existing) free space 35. In particular, the holder 28 is configured with the abutment or snap surface 36 flush with the edge section 34 a. As can be seen in fig. 5, the holder 28 is configured as a wedge. The bevel 28a is oriented such that the corresponding holder 30, when introduced into the introduction groove 27, faces this bevel 28 a.

In fig. 5, it can also be seen that the side wall 20 has an edge 20a facing away from the base wall 18. A sealing flange 37 of the rear part 7 is integrally molded on this edge 20 a. The sealing flange 37 extends here first with a first partial region 37a substantially perpendicularly to the side surface. Next to this first partial region, a second partial region 37b is formed, which is oriented toward the base wall 18. This second subregion 37b then merges into a further subregion 37c, which is curved and is oriented away from the base wall 18. The sealing flange 37 then bears against the inner side 3 a. The sealing flange 37 is formed completely around.

In fig. 6, a further perspective sectional view of the assembly 17 is shown. Here, two holding elements 28 are shown, which are preferably present. These retaining elements are formed on the carrier wall 29. Moreover, here is shown two corresponding catches 31, preferably present, which project laterally in different directions and catch with the holder 28. Also visible in fig. 6 is that the rear part 7 has a guide 38. The guide 38 is entirely formed in the introduction groove 27. Which is moulded in one piece on the side wall 20, in particular on the inner side 20b of the projection 25. In addition, the guide 38 is also molded onto the inner side 18a of the base wall 18. The guide 38 is in particular wedge-shaped. The guide has a guide surface 38 a. When the counterpart holder 30 is introduced into the introduction groove 27 along arrow P, the front space of the counterpart holder 30 comes into contact with the guide surface 38a and is pressed toward the holder 28 by the slope when further guided. In particular, the guide 38 and the holder 28 are arranged such that the snap-in state is also supported thereby and then correspondingly also in the final, snap-in, assembled state shown in fig. 6. This also prevents the guide 38 from unintentionally releasing the snapped-on state.

Fig. 7 shows the design according to fig. 6, however in a different perspective view from fig. 6. The guide surface 38a, here linear, can be seen.

If the back piece 7 is fitted on the wall 3, the back piece 7 and the wall 3 are first provided. The rear part 7 is then guided from the rear side 3a onto the wall 3. In this case, the counter holder 30, which is a curved web, is then lowered into the insertion groove 27 along the insertion direction P through the opening 33. Then, in the case of further introduction movement in the introduction direction P, the front edge of the corresponding holder 30 contacts the guide surface 38a of the guide 38. This then moves the counter holder 30 towards the holder 28 with a further introduction movement in the introduction direction P.

Then, during this introduction, the holder 28 passes through the recess 32, and then the catch 31 also acts or catches behind the holder 28 with the corresponding holder 30 introduced correspondingly deeper into the introduction groove 27.

In the region of the introduction groove 26, a corresponding process is also carried out with the further corresponding holder 30 there. The configuration and the explanations relating to the assembly correspond to the configuration and explanations explained above for the configuration of the respective holder 30 and the introduction groove 27.

List of reference numerals:

1 rear part/domestic refrigeration appliance component

2 door

3 wall

3a back side

4 wall

5 vacancy

6 attachment

7 rear part

8 intermediate space

9 assembly space

10 volume space

11 domestic refrigeration appliance

12 casing

13 outer case

14 inner container

15 intermediate space

16 accommodation space

17 Assembly

18 base wall

18a inside

19 side wall

20 side wall

20a side wall

20b inside

21 side wall

22 side wall

Space of 23 volume

24 opening

25 projection

26 projection

27 introduction groove

28 holder

29 load-bearing wall

30 corresponding to the holding member

31 to the fastener

32 grooves

33 opening

34 edge of the

34a edge section

35 free space

37 snap surface

37 sealing flange

37a sub-region

37b sub-region

37c subregion

38 guide piece

38a guide surface

100 rear part

101 base wall

102 side wall

103 side wall

104 side wall

105 side wall

106 wall

107 contact piece

108 outer side

109 fastener

110 fastener

111 edge flange

112 gap

113 a space

Width B

b1 width

The P arrow.

Claims

1. A back piece (7) for a household cold appliance component (1), having a base wall (18) and side walls (19, 20, 21, 22) which end on the base wall (18) so that a basin with a volume space (23) bounded by these walls (18 to 22) is formed by the base wall (18) and the side walls (19 to 22), and having at least one holder (28) which is arranged to be coupled with a corresponding holder (30) of the household cold appliance component (1) when the back piece (7) is retentively fitted on the household cold appliance component (1), characterized in that the holder (28) is arranged in the volume space (23).

2. The rear piece (7) as claimed in claim 1, characterized in that a carrier wall (29) is provided in the volume (23), on which carrier wall the holder (28) is integrated.

3. The rear part (7) according to claim 1 or 2, characterized in that an introduction slot (27) is formed in the volume (23), into which the holder (28) projects and which is configured in a defined manner for the introduction of the counter-holder (30) for the snap-in engagement with the holder (28).

4. The rear piece (7) according to claim 2 or 3, characterized in that the introduction slot (27) is directly delimited by the carrier wall (29).

5. The rear part (7) according to claim 3 or 4, characterized in that the introduction groove (27) is directly delimited by a side wall (19 to 22).

6. The rear part (7) as claimed in one of claims 3 to 5, characterized in that the introduction groove (27) is constructed as a lateral attachment structure, for which purpose the side walls (19 to 22) bounding the introduction groove (27) are formed with projections (25).

7. The back-piece (7) according to claim 6, characterized in that the projection (25) extends over a partial length of the side walls (19 to 22), in particular over a partial length which is between 30% and 70%, in particular between 40% and 50%, of the total length of the side walls (19 to 22).

8. The back-piece (7) according to one of the preceding claims, characterized in that a free space (35) is formed between an edge section (34a) of the edge (34) of the carrier wall (29) facing the base wall (18) and the base wall (18).

9. The back-piece (7) according to claim 8, characterized in that the holder (28) is arranged on an edge section (34a) of the carrier wall (29) and is arranged flush with the edge section (34a) with an abutment surface (36).

10. The rear part (7) as claimed in one of the preceding claims, characterized in that a guide (38) is provided on the inner side (20b) of the side walls (19 to 22) delimiting the introduction groove (27), with which guide the counter holder (30) can be automatically guided towards the holder (28) during introduction.

11. The rear piece (7) according to claim 10, characterized in that the guide (38) is a guide wedge with a guide surface (38a) sloping towards the holder (28), wherein the guide surface (38a) is arranged for sliding the counter holder (30) along when the counter holder (30) is introduced into the introduction groove (27) and/or the guide surface (38a) is configured for retaining a snap-fit position of the counter holder (30) on the holder (28).

12. Rear piece (7) according to one of the preceding claims, characterized in that the side walls (19 to 22) have an edge (20a) facing away from the base wall (18), wherein a circumferential sealing flange (37) is molded on the edge (20 a).

13. Back-piece (7) according to one of the preceding claims, characterized in that the at least one retaining piece (28) is configured as a wedge.

14. Assembly (17) having a rear part (7) according to one of the preceding claims and having a domestic refrigeration appliance component (1) having a wall (3, 4) in which a through-opening (5) is formed, wherein the rear part (7) is arranged on the wall (3, 4) and covers the opening (5).

15. Method for assembling a rear part (7) according to one of claims 1 to 13 on a domestic refrigeration appliance component (1), in which method the following steps are carried out:

-providing a domestic refrigeration appliance component (1), wherein a through-opening (5) is formed in a wall (3, 4) of the domestic refrigeration appliance component (1);

-providing a back-piece (7);

-guiding the rear part (7) and the wall (3, 4) close to each other in the region of the recess (5), for which purpose the rear part (7) is oriented such that a volume space (23) of the rear part (7) which is open only on the side opposite the base wall (18) of the rear part (7) faces the wall (3, 4);

-introducing at least one corresponding holder (30) of the walls (3, 4) from the open side of the volume (23) into a volume (23) of the rear part (7), in particular an introduction groove (27) in the volume (23), wherein the introduction takes place during the mutually approaching guidance;

-snapping the counter-holder (30) with the holder (28) of the rear part (7) in the volume (23), so that the rear part (7) is thereby held against the wall (3, 4) and the recess (5) is completely covered by the rear part (7).