WO2017036779A1

WO2017036779A1 - Household appliance door and household appliance having a household appliance door

Info

Publication number: WO2017036779A1
Application number: PCT/EP2016/069377
Authority: WO
Inventors: Andreas Lindel; Christian Schmid; Hans Peter Werner; Günter PRESCHL
Original assignee: BSH Hausgeräte GmbH
Priority date: 2015-09-03
Filing date: 2016-08-16
Publication date: 2017-03-09
Also published as: DE102015216922A1; CN208862303U

Abstract

A household appliance door, in particular a household refrigeration appliance door (1), having a cavity (2) which is filled with insulating material at least in regions and at least portions of which are limited by a first wall (3) on which a rib (5) is formed, and having a backing part (14) which is provided on the insulation side and at least portions of which are situated within the rib (5). According to the invention, the first wall (3) has a first cutout (11) through which a first portion (13) of the backing part (14) which is situated outside of the rib (5) is exposed.

Description

Home appliance door and home appliance with one

Household appliance door

The present invention relates to a household appliance door with a cavity, which is at least partially filled with insulating material and which is at least partially bounded by a first wall on which a rib is formed, and with an isolation side arranged Hinterlegteil, which is at least partially disposed within the rib , Such household appliance doors are used in particular as household refrigeration appliance doors. In this case, the first wall typically forms a so-called inner wall of the door, so when the door is mounted on a domestic refrigeration appliance, it faces a storage space.

It is known to provide domestic refrigeration appliance doors with insulation-side arranged metallic backing parts. This allows the mounting of attachments that direct large (weight) forces into the first wall (e.g., door racks). An assembly of such attachments exclusively on the first wall usually separates, since this wall is made only of a thin-walled plastic board.

Thus, from DE 10 2005 021 537 A1 a door for a refrigeration device is known, with an outer wall and an inner wall, which surround a gap, and projecting from the inner wall vertical bars. The spars are at least partially formed by a vertical profile part. A backing part extends vertically over the entire length of the vertical profile part, which is anchored by screws with the backing part of sheet metal.

The present invention has as its object to provide a household appliance door mentioned above, which allows a precise connection of an attachment, in particular an electronic assembly, to the first wall. This object is achieved according to the invention by providing, in the case of a household appliance mentioned at the outset, that the wall has a first cutout through which a first section of the backing part arranged outside the rib is uncovered. The present invention allows by means of the first cutout a direct connection of an attachment, such as a camera module or a light emission unit, to the backing part. Compared to a connection to the first wall, this allows improved positioning accuracy. In particular, can be done by an appropriate choice of the material of the backing part and its geometry, especially the first section, a very stable and high reproducibility with respect to the position binding, which also allows a good seal the connection point to the entry of moisture prevent.

The arrangement of the backing part at least in sections within the rib allows a further improvement of the connection of an attachment, in particular its position accuracy. In this way, namely, the backing part itself is already arranged with a good repeatability precise and yet easy in the cavity.

By disposing the first cutout such that a first portion of the backing piece disposed outside the rib is exposed, positioning of an attachment such as a camera unit becomes free from the actual shape and position of the rib. In this case, the invention makes use of the fact that only the backing part is to be arranged at least in sections within the rib in order to increase the positional accuracy. The actual attachment, in particular joints thereof (e.g., mechanical connections or conduit connections such as electrical leads) can be placed at a position of the first wall independent of the rib: namely, only by the choice of the position of the first cutout.

By the first portion of the backing part is exposed, this is visible, for example, for a mechanic and freely accessible - at least as long as no attachment is attached to this or concealed.

The backing part is arranged on the insulation side, that is, the backing part is located substantially completely within the cavity, which is at least partially filled with insulation material. By "substantially" is meant here that a predominantly portion of the volume of Hinterlegteiles is disposed within the cavity, for example, more than 75 percent, preferably more than 90 percent.

Preferred embodiments are given in the subclaims and the embodiments described below.

In order to facilitate the assembly, in particular in order to avoid leakage of the insulating material, the first cutout preferably exposes exclusively the first portion of the backing piece. In particular, the first section does not expose the insulation material, so this is not visible. Preferably, an edge of the first cutout completely contacts the backing piece, so that there is a connection sealing with respect to the insulation material.

According to one embodiment, it is provided that the backing part is in one piece. It is thus inexpensive to manufacture. In contrast to multi-part backing parts, the dimensional accuracy is also increased. Ultimately, therefore, the position accuracy of Hinterlegteiles within the household appliance door can be further increased.

According to one embodiment it is provided that the backing part consists of plastic. For the inventive increase in the positional accuracy of the position of the backing within the finished manufactured household appliance door and thus ensuring an exact location of an attachment showed that a completely made of plastic, such as. Polypropylene (PP), produced backing part is sufficient. In addition, a plastic backing part has a lower thermal conductivity than a metal backing part, so that the insulation effect is better in the case of a household refrigerator door.

According to one embodiment, it is provided that the backing part is positively connected and / or non-positively connected to the first wall or can be connected. In particular, it can be provided that the backing part is connected to the first wall in a form-fitting and / or non-positively connected manner independent of the insulating material or can be connected. By "independent", it is to be understood that this connection is also guaranteed before the introduction of the insulation material, It is also possible that the backing part, irrespective of the insulation material, on the first wall is secured captive or can be fastened. These embodiments lead to a simplification of the assembly: the backing part is typically arranged in the cavity before it is at least partially introduced with insulating material. An unintentional displacement of the backing part before the introduction of the insulating material is thus prevented; the error rate is reduced or lower requirements are placed on the manufacturing process. The positive and / or non-positive connection can be designed for a tool-free assembly. The backing part can thus be inserted during assembly by hand and optionally aligned.

It is also possible that the backing part is attached to the first wall exclusively or additionally by a separate holding means, which is located entirely within the cavity. In particular, an adhesive tape is suitable as such holding means.

The backing part and / or the first wall may have cooperating positioning means. The positioning means may in particular represent a positive connection. The positioning help in this case that an exact position of the backing part is achieved when attached to the wall and that this position is maintained during further assembly, for example, the introduction of the insulation material. Thus, according to one embodiment, it is provided that the backing part has a positioning projection, which engages in the first cutout. Preferably, the positioning projection projects only into the first cutout. In order to avoid disturbing contours of the backing part during assembly of an attachment part, the positioning projection preferably does not protrude out of the first cutout. In order to enable a simple mounting of the backing part, it can be provided that the positioning projection does not engage behind an edge of the first cutout. It is possible that the positioning projection additionally enters into a frictional connection with an edge of the first cutout. In particular, a Untermaßpassung between the two elements can be selected. Alternatively, a clearance fit can be selected between the positioning projection and the rim. Although this can also cause the desired position of Hinterlegteiles within the first wall with appropriate dimensioning. The assembly can be simplified by the clearance fit, however. According to one embodiment it is provided that the positioning projection is formed by a closed frame. With a view perpendicular to the first section, an edge of the first section completely encloses the frame. The frame may be formed by a rib which projects from a support plate of the backing part. The height of the rib is preferably smaller than the wall thickness of the first wall in the region of the first cutout.

An additional improvement of the positioning accuracy of the backing part can be done by additional connections to the first wall. So is according to a

Embodiment provided that the backing part has at least one spring element which contacts a side wall of the rib. In the assembled position of the

Hinterlegteiles the spring element is braced, in particular elastically deformed.

In particular, it is possible that the backing element is clamped between two facing sides of the rib by the spring element. The spring element allows captive retention of the backing part during assembly before the

Insulation material is introduced into the cavity.

It is possible that the at least one spring element is formed by a spring tab. In particular, if the backing part is made of plastic, this can be a simple yet effective deadlock can be achieved. Preferably, the spring tab lies flat against a side wall of the rib. It is possible that a free end portion of the spring tab is angled, and abuts a portion of the first wall adjacent to the side wall of the rib. This end portion represents a stop, which defines an end position of the backing part when inserted into the rib. Preferably, the backing part does not contact a bottom of the rib. As a result, an exact position of the backing part can always be ensured, even if the wall thickness of the first wall varies due to production; Thus, the respective present situation of the bottom of the rib for the depth position of Hinterlegteiles irrelevant.

According to one embodiment, it is provided that the backing part has at least one holding means for a line, which line is exposed at least in sections through the cutout. By Hinterlegteil can thus, for example, a electrical line are guided in an attachment. The holding means may be designed to hold a plug, preferably with a positive fit. If the backing part has a frame as a positioning projection, the retaining means is preferably arranged completely within the frame.

The first cutout can thus be used, in conjunction with the first section, for the mechanical connection of the backing piece to the first wall. On the other hand, the first cutout and the first section may serve to guide all of the leads required for an attachment into the attachment. The location of the first cutout outside of the spar is advantageous because, on the one hand, it is easy to feed the cables from the cavity to the first cutout and, on the other hand, connecting the leads to the attachment is easy to accomplish.

However, the first section can continue to be used to allow a mechanical connection of an attachment to the backing part. In order to ensure an exact position of the attachment part, however, further sections of the backing part are preferably exposed. Thus, according to one embodiment, it is provided that the wall has at least one further cutout, through which a further section of the backing part arranged within the rib is exposed. This additional section can be used for an additional positive and / or non-positive connection between the attachment and backing part. The location of the further section within the rib has the following advantages: On the one hand, the greatest possible distance between different connection points can be made possible, which leads to a stable connection. In addition, the attachment can be attached to two different wall portions of the first wall; in particular on wall sections that are at an angle to each other, so that the attachment between these wall sections can be stably maintained.

Preferably, the first cutout and the further cutout are not connected to each other. The further cutout is preferably located completely in a side wall of the rib. The further section preferably preferably exposes the further section of the backing part and in particular not parts of the insulation material. In order to enable a simple joining of the backing part to the first wall, it can be provided that the further section does not protrude into the further cutout.

According to one embodiment, it is provided that the at least one further detail exposes a fastening means of the backing part, in particular an opening of a blind hole of the backing part, for fastening an attachment part.

According to one embodiment, it is provided that an attachment, in particular an electronic assembly, is attached directly to the backing part on a side facing away from the cavity of the wall. The attachment may be a camera module and / or a light emission unit. By the attachment is attached directly to the backing part, the desired position is ensured. Finally, the backing piece can be made much more precise than would be possible with the first wall.

According to one embodiment, it is provided that the attachment has a locking projection which engages in a receptacle of the backing part on the first portion in order to ensure a positive connection between the attachment and the backing part. It can be a press fit. The locking projection may have a rectangular outer shape. The locking projection may be formed by a closed frame having a circumferential stop to define an end position when inserted into the receptacle. The locking projection may have a passage through which passage a line is guided.

According to one embodiment, it is provided that the attachment is fastened by means of a screw to the further section and that the attachment has a pin with a screw passage, which pin engages in an opening of a blind hole surrounding paragraph of Hinterlegteiles.

According to one embodiment, it is provided that the rib extends vertically and the backing part extends along a longitudinal extent of the rib only between end portions of the rib. To attach a fixture such as a camera module, enough relatively small backing part, which for example has a vertical extent of less than 20 cm, preferably already less than 10 cm. An inventive household appliance, in particular domestic refrigeration appliance, is equipped with a household appliance door according to at least one of the preceding embodiments for closing a storage space formed by a body, the wall of the household appliance door is facing the storage room with the door closed.

An embodiment of the present invention will be described below with reference to the accompanying drawings. Showing:

1 shows a household appliance door according to the invention,

Fig. 2 is a section through the plane II-II of Fig. 1, Fig. 3, the backing part of the household appliance door of Fig. 1, Fig. 4, the household appliance door of Fig. 1 with an additional attachment and Fig. 5 is a section through the Plane VV in FIG. 4.

1 and 2 show a household appliance door according to the invention in the form of a domestic refrigerator door 1. This has a cavity 2, which is filled with - not shown - insulation material, namely polyurethane foam. The cavity 2 is partially bounded by a first wall 3, so that this wall 3 constitutes a boundary for the insulating material. The cavity 2 is bounded by further walls 4. The first wall 3 represents an interior wall of the household appliance door. This wall 3 is thus a storage space of the household appliance, e.g. facing a refrigerator or freezer.

On the first wall 3, a rib 5 is integrally formed. The rib 5 protrudes from a substantially planar main surface 6 of the first wall 3 and extends vertically over a large part of the vertical extent of the first wall 3. At the rib 5 holding projections 7 are integrally formed, which serve to keep not shown door racks for storage of refrigerated / frozen goods. For this purpose, the first wall 3 a further - not shown - rib, which also extends vertically, so that the door racks can be arranged between the ribs. The cavity 2 also extends into the rib 5, ie insulation material is also arranged in the rib 5. The rib 5 has two side walls 8, 9 and a bottom 10.

The first wall 3 has a first cutout 11 on its main surface 6. The cutout 1 1 is closed at the edge and lies completely in the flat main surface 6, so that an edge 12 of the cutout 1 1 lies in a flat surface. The cutout 1 1 has a substantially rectangular shape.

Through the first cutout 1 1, a first portion 13 of a Hinterlegteiles 14 is exposed. Since the first cutout 1 1 is already arranged outside the rib 5, the first section 13 of the backing part 14 is also arranged outside the rib 5, although the backing part 14 itself is arranged at least in sections within the rib 5. The integrally made of plastic backing 14 is arranged on the insulation side, so is substantially completely in the cavity 2 and is in particular with its facing in the direction of the cavity 2 surfaces in contact with the insulating material. Due to the foamed polyurethane, the backing part 14 is thus fixed in its position.

The backing part 14, shown in greater detail in FIG. 3, is positively and non-positively connected to the first wall 3.

For this purpose, the backing part 14, on the one hand, has a positioning projection 15, which engages in the first cutout 1 1. The positioning projection 15 is formed by a closed frame. The frame projects from a carrier plate 16 and has a height measured from the carrier plate 16 that is less than the wall thickness of the first wall 3 in the region of the first cutout 1. The backing part thus does not stand above the first cutout 11 out. However, by the frame having a rectangular shape whose outer dimensions are slightly smaller than corresponding inner dimensions of the edge 12, a positive connection allows. This positive connection arises even during the assembly of the backing part 14 even before the insulation material is introduced into the cavity 3.

The backing part 14, on the other hand, has two spring elements 17, whereby it is braced within the rib 5. Each spring element 17 is formed by a spring tab 18 and abuts against an inner surface 19 of one of the side walls 9 substantially flat. The spring tabs 17 are formed by sections of the support plate 16. On the opposite side wall 8, the backing part 14 is also flat by means of the support plate 16. In the assembled position of the backing piece 14 shown in FIGS. 1 and 2, the spring tabs 18 are elastically braced. Each spring tab 18 has an angled free end portion 19. The end portion 19 abuts against an inner surface portion 20 of the first wall 3. As a result, an end stop is achieved upon insertion of the backing part 14 into the rib 5. In particular, a clearance 22 is formed between the bottom 10 of the rib 5 and an end face 21 of the portion of the backing piece 14 located inside the rib 5. This clearance 22 enables exact positioning of the backing part 14, even with production-related fluctuations in the wall thickness of the first wall 3.

By the spring element 17 an independent support of the backing part 14 is achieved on the first wall 3. In particular, before the insulation material is introduced into the cavity 2, a captive retention of the backing part 14 has already been achieved.

The backing member 14 has two holding means 22, 23 for a conduit, such as e.g. the electrical line 24. The holding means 22, 23 have holders for a positive connection of a plug, so that an electrical connection of an attachment can be done easily and safely.

The first wall 3 has two further cutouts 24, 25 which each expose a further section 26, 27 of the backing part. All cutouts 1 1, 24, 25 are separated from each other, so have independent and closed edges. The further sections 26, 27 are arranged completely within the rib 5 and accordingly the further cutouts 24, 25 are arranged in one of the side walls 8 of the rib 5. The further sections 26, 27 each have openings 28, 29 of blind holes, which form fastening means in order to be able to fasten an attachment to the backing part. It is possible, as shown in the further section 25, that the cutouts have an elongated shape, so that an example cylindrical pin of an attachment can be tilted obliquely when attaching to the Hinterlegteil 14.

In Figs. 4 and 5, an attachment 30 is attached to the household appliance door shown in the previous figures. The attachment 30 is formed by an electronic module, namely a camera module.

The, in particular captive, attachment takes place directly on the backing part.

For this purpose, the attachment 30 has, on the one hand, a locking projection 32 on a housing element 31. This engages in a receptacle 33 of the backing part 14 a form-fitting. The locking projection 32 is formed by a closed frame, which surrounds a passage 34, so that an - not shown - electrical line from the cavity 2 can be performed in the attachment 30. On the other hand, the attachment 30 is attached by means of two screws 35 to the other sections 26, 27. In order to enable an exact positioning of the backing part 14, the housing element 31 of the add-on part 30 has cylindrical pins 36 which engage in shoulders 37 and allow an alignment of the attachment part 30 by positive locking. The paragraphs 37 surround the openings 28, 29th

LIST OF REFERENCE NUMBERS

1 household refrigerator door

2 cavity

3 first wall

4 more wall

5 rib

6 main surface

7 retaining projection

8 side wall

9 side wall

10 floor

1 1 first excerpt

12 edge

13 first section

14 backing piece

15 positioning projection

16 carrier plate

17 spring element

18 spring tab

19 end section

20 surface section

21 end surface

22 holding means

23 holding means

24 section

25 section

26 section

27 section

28 opening

29 opening

30 attachment

31 housing element Locking projection receiving passage screws pin

paragraph

Claims

Domestic appliance door, in particular household refrigerator door (1), with a cavity (2) which is at least partially filled with insulating material and which is at least partially limited by a first wall (3) on which a rib (5) is formed, and with an insulation side arranged backing part (14) which is at least partially disposed within the rib (5), characterized in that the first wall (3) has a first cutout (1 1) through which a outside of the rib (5) arranged first portion ( 13) of the backing part (14) is exposed.

Domestic appliance door according to claim 1, characterized in that the

Backing part (14) positively and / or non-positively connected to the first wall (4) is connected or.

Domestic appliance door according to claim 2, characterized in that the backing part (14) has a positioning projection (15), which engages in the first cutout (1 1).

Domestic appliance door according to claim 3, characterized in that the

Positioning projection (15) is formed by a closed frame.

Domestic appliance door according to at least one of claims 2 to 4, characterized in that the backing part (14) has at least one spring element (17) which contacts a side wall (9) of the rib (5).

Domestic appliance door according to claim 5, characterized in that the at least one spring element (17) by a spring tab (18) is formed.

Domestic appliance door according to at least one of the preceding claims, characterized in that the backing part (14) at least one holding means (22,23) for a line (24), which line (24) at least partially exposed by the cutout (1 1).

8. Household appliance door according to at least one of the preceding claims, characterized in that the wall (2) has at least one further cutout, through which a disposed within the rib further portion of the backing part is exposed.

9. Household appliance door according to claim 8, characterized in that the at least one further detail exposes a fastening means of the backing part, in particular an opening of a blind hole of the backing part, for fastening an attachment part.

10. Household appliance door according to at least one of the preceding claims, characterized in that an attachment, in particular an electronic assembly, is attached directly to the backing part on a side facing away from the cavity of the wall.

1 1. Domestic appliance door according to claim 10, characterized in that the attachment has a locking projection which engages in a receptacle of the backing part on the first portion to ensure a positive connection between the attachment and the backing part.

12. Household appliance door according to claim 1 1, characterized in that the

Locking projection has a passage through which passage a line is guided. 13. Household appliance door according to one of claims 10 to 12, characterized in that the attachment is fastened by means of a screw to the further section and that the attachment has a pin with a screw passage, which pin engages in an opening of a blind hole surrounding paragraph of Hinterlegteiles ,

14. Household appliance door according to at least one of the preceding claims, characterized in that the rib extends vertically and the backing part extends along a longitudinal extent of the rib only between end portions of the rib.

15. Household appliance, in particular domestic refrigeration appliance, with a household appliance door according to at least one of the preceding claims for closing a storage space formed by a carcass whose wall of the household appliance door is facing the storage room with the door closed.