EP2850374B1 - Refrigerator, freezer or wine storage cabinet - Google Patents

Description

The invention relates to a refrigerator, freezer or wine storage cabinet according to the preamble of claim 1. Such a cabinet is for example from the US Pat. No. 3,506,325 known. An example of a contact arrangement in a refrigerator or freezer, in the interior of which at least one removable shelf is used, which divides the interior of the refrigerator or freezer into different, variable in size subspaces, for example, from the DE 10 2006 057 083 A1 out. In this document, several removable shelves are used in the refrigerator or freezer, each having a lighting unit as a current collector in its rear-side region. For this purpose, each of the shelves has a frame with the illumination unit attached thereto, wherein this lighting unit comprises at least one light band with a plurality of light sources inserted into a housing. As light sources, light-emitting diodes (LEDs) are preferably used because of their low power consumption with very high light output.
The contact arrangement for producing an electrical line connection in this case consists of contact elements in the form of female connectors in the rear wall of the refrigerator or freezer, which are each connected to a corresponding plug on one of the shelves when the shelf is completely inserted into the refrigerator or freezer.
A disadvantage of this solution, for example, that through the increasingly weary in the course of their life socket-plug connections a progressively worse transmission of electrical energy. In addition, the assembly of such a contact arrangement is complicated. Another, very significant disadvantage is that the female connectors are clearly visible in the back wall with the shelf removed and thus reduce the overall impression. Moreover, such a solution is unfavorable for hygienic reasons. The US Pat. No. 3,506,325 discloses a contact arrangement for a refrigerator comprising a mounted on the opposite inner sides of the cooling space busbars, to each of which a resilient pressure contact of the shelf rests. The contact bus bar is housed in a rail for receiving the shelf, which is mounted on the inside of the refrigerator. The power supply is provided by means of indicated conduits extending through the inner wall.

From the DE 10 2010 045 092 A1 a power supply system for furniture is known which comprises pin-shaped contact elements which are inserted through the side wall of the body. The pin protrudes into the interior and includes a plurality of conductive sub-segments to provide a multi-pole power transmission. An inserted shelf contains corresponding pressure contacts to make the electrical connection to a consumer mounted on the shelf. The disadvantage here is that unused pins protrude visibly into the interior and can be dirty or damaged during use of the furniture by improper contact.

The invention thus raises the problem of providing a contact arrangement for producing an electrical line connection in a refrigerator, freezer or wine storage cabinet, which is effective and simple design only with inserted shelf, and allows safe, trouble-free transmission of electrical power. According to the invention this problem is solved by a refrigerator, freezer or wine storage cabinet according to claim 1. Advantageous embodiments and modifications of the invention will become apparent from the respective following dependent claims.
A contact assembly for making an electrical wiring in a refrigerator, freezer or wine storage cabinet with at least one pantograph and a contact socket on a shelf of the cabinet, the contact socket in turn has at least one contact and the contact socket at least one integrated in a side wall of the cabinet, when inserted Shelf is associated with the contact base corresponding contact element has been further developed according to the invention to the effect that the contact element is mounted behind a protected with a spatial distance to the side wall of the cabinet web. A contact arrangement is necessary, for example, if a lighting unit is mounted on the shelf, which must be activated with electrical energy.
The advantages of the invention are to be seen in particular in that the web forms a privacy screen for the attached behind the web contact element. However, the risk of introducing or applying food residues into the region of the contact or of the contact elements can also be reduced by the web, which in particular satisfies the hygienic requirements. Even when cleaning actions by the user, the contact elements mounted in or on the wall are protected against contact as far as possible, so that in this case no bends or other damage occur. The contact base and the contact element are connected to each other in this solution in a simple manner electrically conductive. This is due in particular to the simple structure of the contact arrangement. According to the invention, the contact element is guided from the outside of one of the side walls of the cabinet through an opening provided in the side wall to the inside of the side wall. These easy-to-install solution allows easy insertion of the contact element behind the bridge.

A further, very advantageous reduction of the installation effort can also be achieved if a plurality of contact elements are arranged one above the other components of a contact strip used by the outside of a side wall of the cabinet. Since the shelves are adjustable in height within the cabinet to thereby divide the interior of the cabinet in different sized subspaces, it is advantageous if in the area of each of the existing bearing surfaces for a shelf and corresponding contact elements are present. For this reason, the proposed solution offers to combine several contact elements in a contact strip.

Following the aforementioned idea of facilitating the assembly, it is also proposed that the connection of the contact strip with the side wall of the cabinet is a snap, detent or clamp connection.

To optimize the production of an electrically conductive connection, a further proposal of the invention is that the contact elements are limited elastically entombare, metallic sliding contacts or contact springs. The advantage of using sliding contacts lies in the yielding deformability of these contacts and the adaptability to the corresponding contact socket. In this way, a long life of the entire contact arrangement can be ensured with optimal contact.

A development of the invention consists in several contact elements within the contact strip via contact rails are electrically connected to each other. On the one hand, a certain stability within the contact strip can be achieved by the contact rails and, on the other hand, any contact which can be extended in any length is possible in this way. Advantageously, the contact rails are each formed as Mäanderbans to compensate for tolerances in terms of the longitudinal extent between the contact points.

Considering now the contact socket according to the invention, it must first be stated that this has at least one contact, via which an electrically conductive connection to the corresponding contact element can be produced. Such an embodiment is particularly suitable when using direct current. Of course, a plurality of contacts may be present on a contact socket to thereby supply, for example, different pantographs with electric current and use only one contact socket for this purpose. For example, a lighting unit, thermometer, projector, display or any combination of these come into question as a current collector.
The contact socket is arranged according to an embodiment of the invention only on one of the longitudinal sides of the shelf and extends only over part of the length of this longitudinal side. As long sides of the shelf while the pages are to be considered, which are inserted into suitable guides of the cabinet.

Furthermore, a very advantageous solution is to be seen in that the existing contact base on the shelf at least one elastically deformable, the web at least partially barb-like manner with inserted shelf and thus the contact base releasably fixed to the web leg has. In this way, not only a mechanically fixing connection between the contact socket and the web is created, but it can simultaneously the electrically conductive connection can be improved because the contacts in this case rest firmly against each other in a rest position.

In addition, an embodiment according to the invention consists in that the contact base has two contacts of different polarity, which are viewed in the insertion direction of the shelf side by side or in succession. This variant can be selected if the electrical connection is to be provided on one side of the interior or of the compartment, in which case the opposite side is free of electrical connection elements.

By another embodiment of the invention can also be effectively prevented that upon insertion of the shelf in the space provided for recording an electrical short circuit or a faulty circuit. To solve this problem, it is therefore proposed that the contacts of the contact socket have a height offset from one another. In this way, each contact can be reliably assigned a contact element.

A further development of this proposal is moreover that on or in the contact base of the shelf, viewed from the direction of insertion, a contact with a height offset from one another has a higher contact than a contact lying behind it. If the contact socket is provided with contacts in the manner described above, the contact base can be made very narrow, which saves space and material in an advantageous manner. The cabinet-side contact springs are arranged correspondingly offset in height accordingly.

Overall, all direction and position information refer to the operational installation position of the cabinet, in particular a refrigerator, freezer or wine storage cabinet.

As well as the contact strip described above, which is mounted from the outside of a side wall of the cabinet forth, it constitutes a significant advantage of the invention, even if from the inside of the side wall ago an insert bar is used, which in this case arranged with several vertically stacked Webs and below the webs with each corresponding bearing surfaces for supporting a shelf is equipped. With the above solutions, the cabinet can be assembled in a modular manner, simply and inexpensively. The insert strip and the contact strip can therefore be manufactured in advance. In addition, errors in the electrical wiring can be avoided in this way.

A particularly advantageous solution according to the invention is also seen in the fact that the contact surfaces are part of the shelf or in a frame of the shelf laid electrical conductor tracks. In other words, the conductor tracks and the contact surfaces are prefabricated as a one-piece component and integrated in the manufacture of the shelf directly into the frame or in the shelf. This measure also reduces the possible sources of error when mounting a cabinet with a contact arrangement according to the invention.

In continuation of the above idea, it is also advantageous if the electrical conductors have at their ends facing away from the contact surfaces clamps for electrically conductive and mechanically fixing receiving a current collector, in particular a lighting unit. The printed conductors therefore have not only the clamping legs, but also the contact surfaces and are integrated in the manner described above in the shelf or in the frame of the shelf.

The arranged with a lateral distance to a side wall of the cabinet web is optically hidden by a cover according to a proposal according to the invention, so that each web is arranged below a cover.

The aforementioned features and measures can be implemented in a particularly advantageous manner in a refrigerator or freezer, where it is especially about the fulfillment of hygienic requirements.

The invention will be explained in more detail with reference to the accompanying drawings. The illustrated embodiment is not limited to the illustrated variant, but merely serves to explain a principle of the invention. The same or similar components are designated by the same reference numerals. In order to be able to illustrate the mode of operation according to the invention, only greatly simplified schematic representations are shown in the figures, in which the components which are not essential to the invention have been dispensed with. However, this does not mean that such components are not present in a solution according to the invention.

Figur 1:

einen Schrank am Beispiel eines Kühl- oder Gefrierschrankes mit Blick in den Innenraum des Schrankes, jedoch ohne eine Tür,

Figur 2:

eine Einsatzleiste als Einzelteil und in Explosivdarstellung in einem Schrank,

Figur 3:

eine Abdeckung mit einem darunter angeordneten Steg,

Figur 4:

den Blick hinter einen Steg mit den dort angeordneten Kontaktelementen,

Figur 5:

ausschnittsweise eine Explosivdarstellung der Montage der Kontaktelemente von der Außenseite einer Seitenwand her,

Figur 6:

ausschnittsweise eine Kontaktschiene mit einem daran angeordneten Kontaktelement als Einzelteil,

Figur 7:

eine Kontaktschienenanordnung innerhalb einer Kontaktleiste, von der Rückseite her betrachtet,

Figur 8:

eine Kontaktleiste in Explosivdarstellung der Montage mit einer vorhandenen Abdeckung,

Figur 9:

ausschnittsweise einen Blick in den Innenraum eines Schrankes im Bereich der Kontaktierung zwischen Fachboden und Kontaktelement,

Figur 10:

einen Fachboden von seiner Oberseite her betrachtet und als Einzelteil,

Figur 11:

den Ausschnitt XI aus Figur 10 in vergrößerter Darstellung,

Figur 12:

den Bereich des Kontaktsockels eines Fachbodens von der Unterseite her betrachtet und in vergrößerter Darstellung,

Figur 13:

ein Leiterbahnensystem als isolierte Baueinheit,

Figur 14:

ausschnittsweise und im Schnitt eine Beleuchtungseinheit als Stromabnehmer mit einer Leiterbahn.

It shows:

FIG. 1:

a cabinet with the example of a refrigerator or freezer with a view into the interior of the cabinet, but without a door,

FIG. 2:

an insert strip as a single part and in an explosive display in a cabinet,

FIG. 3:

a cover with a web arranged underneath,

FIG. 4:

the view behind a bridge with the contact elements arranged there,

FIG. 5:

a detail of an exploded view of the mounting of the contact elements from the outside of a side wall,

FIG. 6:

a detail of a contact rail with a contact element arranged thereon as an individual part,

FIG. 7:

a contact rail arrangement within a contact strip, viewed from the rear,

FIG. 8:

a contact strip in an exploded view of the assembly with an existing cover,

FIG. 9:

a partial view of the interior of a cabinet in the area of contact between the shelf and contact element,

FIG. 10:

a shelf viewed from its top and as a single item,

FIG. 11:

the cutout XI FIG. 10 in an enlarged view,

FIG. 12:

the area of the contact base of a shelf viewed from the bottom and in an enlarged view,

FIG. 13:

an interconnect system as an isolated structural unit,

FIG. 14:

in sections and on average, a lighting unit as a current collector with a conductor track.

The FIG. 1 allows a look into the interior of a cabinet 1, which in this case is a refrigerator. The refrigerator 1 has two side walls 7, 8 with outer sides 13 and inner sides 16 and a bottom 30, on which a box 31 is parked, as used in a conventional manner for storing food in a refrigerator 1 use. In the inner sides 16 of the side walls 7, 8 a total of four insert strips 21 are used, each arranged one above the other several covers 28 and below these covers each have webs, said webs in the representation of FIG. 1 are not recognizable. The webs opposite also support surfaces 22 are provided which serve the support of a shelf 4. Consequently, the shelf 4 can be inserted in the insertion direction 20 in the interior of the refrigerator 1. The shelf 4 has on its front side via a frame 23 to which a current collector 2 in the form of a lighting unit is mounted centrally, which illuminates the underlying subspace of the refrigerator 1.

In the FIG. 2 an exploded view of the assembly of an insert strip 21 is shown as it can be provided for example in a refrigerator 1. On the insert strip 21, a plurality of webs 11 and bearing surfaces 22 are formed, wherein in each case a cover 28 for better appearance and partial coverage of the webs 11 provides. The distance between the underside of each web 11 to the next associated bearing surface 22 corresponds to the height of a contact socket 3 of the shelf 4, which can be used in this guide. The peculiarity of in FIG. 2 shown insert strip 21 is that this can be prefabricated as a one-piece device and then only in the direction of the arrow "A" in a provided in the side wall 7 of the cabinet 1 recess 29 is used.

From the illustration in FIG. 3 goes out a side wall 7 of the cabinet 1, which serves a cover 28 for partially covering the arranged below the cover 28 web 11. In this case, the web 11 has a lateral distance to the side wall 7, which allows the introduction of a contact socket 3 in a manner to be described in more detail below. For this reason, 11 openings 14, 15 are present between the side wall 7 and the web, in the case of completely assembled cabinet 1 contact elements 9, 10 are used.

This assembly goes out of the FIG. 4 out. It can be seen how the contact elements 9, 10 are used from the outside of the side wall 7 forth through the openings 14, 15 so as to be available for contacting with the corresponding contact socket 3. The contact elements 9, 10 are through the web eleventh arranged concealed and are as well as the web 11 below the cover 28 and above a suitable for the support of the shelf support surface 22 which is formed at a distance to the underside of the web 11.

The FIG. 5 allows a partial view of the outside of the side wall 7, before it is covered by a panel. Shown is an exploded view of the assembly process of the contact elements 9, 10. The contact elements 9, 10 are each connected to contact rails 18 and 19 respectively. The contact rails 18, 19 are guided with the existing contact elements 9, 10 in the direction of the arrows "B" through the existing in the side wall 7 openings 14, 15 so that they are then arranged in the manner described above behind the web 11 protected are. In the FIG. 5 is only the opening 15 recognizable.

An illustration of a contact element 9 goes as an individual part of the FIG. 6 out. The contact element 9 is in this case designed as a metallic sliding contact, which has a claw-like shape and is elastically deformable. The actual contact element in this case forms part of an angle plate 32, which serves to connect to the contact rail 18.

The FIG. 7 also shows in sections a way of wiring the individual contact elements with each other. For this purpose, contact rails 18, 19 are used in the example, which connect to each other on the outside of the side wall 7 a plurality of superposed contact elements of the same polarity. To fix the contact rails 18, 19 and to maintain the required distance serve webs or projections 33rd

The contact rails 18, 19 are integral components of a contact strip 17, as exemplified in an external view of the illustration in FIG. 8 evident. The FIG. 8 illustrates an exploded view of the assembly of this contact strip 17. The contact strip 17 is here shown with a contact rails 18, 19 covering cover and is used in the direction of arrows "C" in a recess 34 provided for this purpose in the side wall.

The FIG. 9 allows a partial view of the interior of a cabinet 1 in the area of contact between shelf 4 and contact element. The consisting of a glass plate 36 and the glass plate 36 at least partially enclosing frame 23 shelf 4 has on only one side of the frame 23 on a contact socket 3, the structure will be described in more detail below. The shelf 4 is in this case directly on the support surface 22, wherein the contact socket 3 with the web 11 in Engage, so that the contact socket 3 and the existing behind the web 11 contact elements have an electrically conductive connection. Above and below the shelf 4 covers 28 are available.
The distance between the underside of each web 11 to the next, associated support surface 22 corresponds to the height of the shelf 4 in the region of the contact socket 3. A special feature of the shelf 4 is in the recess 35, viewed in the insertion direction 20 of the shelf 4 behind the Contact socket 3 is located. Namely, the covers 28 have a cross-sectional geometry corresponding to the recess 35 of the glass plate 36 inserted in the shelf 4. Thus, it is also understandable how a height adjustment of the shelf 4 can take place. This is pulled out as far as the release of the contact socket 3 until the recess 35 is congruent with the cover 28. In this position, the shelf 4 can be changed in its height due to the existing recess 35, to then achieve by re-insertion in the insertion direction 20 and thus successful fixation of the contact socket 3, a height-changed arrangement.

In the FIG. 10 is a shelf 4 viewed from its top and shown as a single part. This shelf 4 has a glass plate 36 which is bordered on its front side with a frame 23. At the center, on the underside of the frame 23, there is also a lighting device 2, which constitutes a current collector. In the rear area, the shelf 4 also has an aperture 37, which serves in a refrigerator 1 to absorb moisture. In the left picture area the FIG. 10 It can be seen that on the frame 23, a contact base 3 is formed, which serves for producing an electrically conductive connection and thus for supplying electric current to the illumination device 2. When viewed in the insertion direction 20 behind the contact base 3, a recess 35 is present, which is incorporated in the glass plate 36. Such a recess 35 is also located on the right side of the shelf 4 and thus in each case where in the cabinet 1 corresponding covers 28 are arranged.

The FIG. 11 shows the enlarged detail FIG. 10 , which corresponds to the corner region of a shelf 4 from the top with the contact socket 3 attached thereto. Analogously, goes from the FIG. 12 the corner region of the shelf 4 from the bottom with the attached contact socket 3, also in an enlarged view. The contact base 3 is formed on the frame 23 of the glass plate 36, wherein in the present case, the frame 23 and the contact base 3 are integrally made of a plastic. The shelf 4 thus formed is used in a refrigerator 1 as a shelf shelf. It needs no special mention that instead of the Glass plate 36 also a plastic plate or other materials can be used. As from the representations of FIGS. 11 and 12 clearly shows, has the contact socket 3 viewed in the direction of insertion 20 via an insertion opening 39 which is bounded on one side by an elastic leg 12. Between the elastic leg 12 and the opposite part of the body of the contact socket 3, a recess is formed, which serves to receive the corresponding, wall-side web 11 when inserted into the cabinet 1 shelf 4. The tip of the elastic leg 12 is formed by a barb 38, which is adapted to wrap around the contour of the web 11 and thus releasably fix the contact socket 3 on the web 11. The top of the contact socket 3 is formed by two contacts 5 and 6, which establish an electrically conductive connection to the corresponding contact elements 9, 10 in the side wall 7 of the cabinet 1 when the shelf 4 is inserted into the cabinet 1. At this point it should be noted that the contacts 5, 6 have a height difference to one another and are arranged one behind the other in the direction of insertion 20. In this case, the contact 5 has a higher position on the contact base 3 than the contact 6 arranged in front of it. This special arrangement has several advantages. For example, an electrical short circuit during insertion of the shelf 4 can be avoided. In addition, this embodiment of the contact socket 3 allows a very narrow design, saving valuable space. On its underside, the contact socket 3 also has a bearing surface 40. As in particular from the illustration in FIG. 12 As can be seen, this bearing surface 40 of the contact socket 3 is provided with a geometry which is designed to be complementary to the corresponding bearing surface 22 within the cabinet 1.

Of the FIG. 13 is a conductor track system to remove as an isolated unit, as it may be inserted into a shelf 4 and in the frame 23 of the shelf 4. In this case, a complete integration is preferred, which is readily possible in a production of the frame made of plastic. Shown is in FIG. 13 a pair of tracks 24 and 25 having contacts 5, 6 on one side and clamps 26 and 27 on the opposite side. In this case, the contacts 5, 6 part of the previously described contact socket 3. The clamps 26, 27, however, serve to receive a light band 46 in one in connection with the FIG. 14 yet to be described.

Accordingly, the shows FIG. 14 In section and in section, a lighting unit 2 as a current collector with a conductor 24. As can be seen from the illustration, the conductor 24 is completely in the existing plastic frame 23rd of the shelf 4 integrated. The frame 23 also goes in one piece into a housing 41, which is part of the lighting unit 2 and in which the clamps 26, 27 are exposed so that they can receive a light band 46 and hold it by clamping. This is not only an electrically conductive connection between the clamps 26, 27 and the light band 46, but also a mechanical fixation is given. The clamps 26, 27 thus have a dual function. Only hint is in the representation in FIG. 14 a lighting means 43 is shown, which is in the present case a light-emitting diode (LED). The lighting means 43 is located behind a diffuser 42, which serves the optimal distribution of the emitted light. On the diffuser 42, the glass plate 36 of the shelf 4 is also placed. The frame 23 and the edge portion of the glass plate 36 are covered by a cover 45, which is a visually appealing panel. Between the underside of the cover 45 and the top of the glass plate 36 is also a seal 44th

LIST OF REFERENCE NUMBERS:

1

cabinet

2

Pantograph (lighting unit)

3

Contact socket

4

Fold bottom

5

Contact

6

Contact

7

Side wall

8th

Side wall

9

contact element

10

contact element

11

web

12

leg

13

outside

14

opening

15

opening

16

inside

17

contact strip

18

contact bar

19

contact bar

20

insertion direction

21

insertion strip

22

bearing surface

23

frame

24

conductor path

25

conductor path

26

clamp

27

clamp

28

cover

29

recess

30

ground

31

box

32

Winkelblech

33

Footbridge, projection

CONTINUED REFERENCE LIST:

34

recess

35

recess

36

glass plate

37

cover

38

barb

39

insertion

40

storage area

41

casing

42

diffuser

43

Lamp

44

poetry

45

cover

46

trunking

Claims (14)

1. Refrigerator, freezer or wine-storage cabinet (33), inside which at least one shelf (4) for holding products to be cooled is inserted or can be inserted, comprising a contact arrangement for providing an electrical connection to the shelf (4) or an electrical device attached to the shelf, the contact arrangement comprising at least one current collector (2) and a contact base (3) on the shelf (4), the contact base (3), for its part, comprising at least one contact (5, 6) and the contact base (3) being assigned at least one contact element (9, 10) that is integrated in a side wall (7, 8) of the cabinet (1) and that corresponds to the contact base (3) when the shelf (4) is fitted,
   the contact element (9, 10) being housed in a protected manner behind a connecting piece (11) arranged at a spatial distance from the side wall (7, 8) of the cabinet,
   characterised in that
   the contact element (9, 10) is guided from the outer face (13) of one of the side walls (7, 8) of the cabinet (1) through an opening (14, 15) provided in the side wall (7, 8) to the inner face (16) of the side wall (7, 8).
2. Refrigerator, freezer or wine-storage cabinet according to claim 1,
   characterised in that
   a plurality of contact elements (9, 10), arranged one above the other, are components of a contact strip (17) inserted from the outer face (13) of a side wall (7, 8) of the cabinet (1).
3. Refrigerator, freezer or wine-storage cabinet according to claim 2,
   characterised in that
   the connection of the contact strip (17) to the side wall is a snap connection, latching connection or clamp connection.
4. Refrigerator, freezer or wine-storage cabinet according to any of the preceding claims,
   characterised in that
   the contact elements (9, 10) are metal sliding contacts that are elastically deformable to a limited extent.
5. Refrigerator, freezer or wine-storage cabinet according to any of the preceding claims,
   characterised in that
   a plurality of contact elements (9, 10) are interconnected in an electrically conductive manner inside the contact strip (17) via contact bars (18, 19).
6. Refrigerator, freezer or wine-storage cabinet according to any of the preceding claims,
   characterised in that
   the contact base (3) is arranged on only one of the longitudinal sides of the shelf (4) and extends over some of the length of said longitudinal side.
7. Refrigerator, freezer or wine-storage cabinet according to any of the preceding claims,
   characterised in that
   the contact base (3) provided on the shelf (4) comprises at least one elastically deformable connecting piece (12) that engages around the connecting piece (11) at least in part and in the manner of a barb when the shelf (4) is fitted and thus releasably secures the contact base (3) to the connecting piece (11).
8. Refrigerator, freezer or wine-storage cabinet according to any of the preceding claims,
   characterised in that
   the contact base (3) comprises two contacts (5, 6) of differing polarity which are arranged one next to the other or one behind the other when viewed in the push-in direction (20) of the shelf (4).
9. Refrigerator, freezer or wine-storage cabinet according to claim 8,
   characterised in that
   the contacts (5, 6) of the contact base (3) are vertically offset from one another.
10. Refrigerator, freezer or wine-storage cabinet according to claim 9,
    characterised in that
    a front contact (6) of the contacts (5, 6) that are vertically offset from one another when viewed in the push-in direction (20) is arranged higher than a contact (5) located therebehind.
11. Refrigerator, freezer or wine-storage cabinet according to any of the preceding claims,
    characterised in that
    an insert strip (21), which comprises a plurality of connecting pieces (11) arranged vertically one above the other and, below the connecting pieces (11), comprises support surfaces (22) for supporting a shelf (4), each of said support surfaces corresponding to one connecting piece in each case, is inserted from the inner face (16) of the side wall (7, 8).
12. Refrigerator, freezer or wine-storage cabinet according to any of the preceding claims,
    characterised in that
    the contact surfaces (5, 6) are components of electrical strip conductors (24, 25) laid in the shelf (4) or in a frame (23) of the shelf (4).
13. Refrigerator, freezer or wine-storage cabinet according to claim 12,
    characterised in that
    the electrical strip conductors (24, 25) comprise, on the ends thereof remote from the contact surfaces (5, 6), clamping clips (26, 27) for receiving a current collector (2), in particular a lighting unit, thermometer, projector or display, in an electrically conductive and mechanically securing manner.
14. Refrigerator, freezer or wine-storage cabinet according to any of the preceding claims,
    characterised in that
    each connecting piece (11) is arranged below a cover (28).

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