EP2539655B1 - Refrigerator with extractable container - Google Patents

Description

The present invention relates to a refrigeration appliance, in particular a domestic refrigeration appliance, in which a cooled interior is delimited by a deep-drawn inner container, from which a refrigerated goods container such as a pull-out drawer can be pulled out in order to gain access to refrigerated goods contained therein.

DE 20 2006 016 119 U1 discloses a refrigeration device having an inner container delimiting an inner space and a support frame supported on two sidewalls of the inner container, the mold parts having a protrusion protruding into the inner space of the inner container, the grate being supported on a lower part of the projections and parts of the Grate in an extended stop position an upper part of the projections touch.

Out DE 20 2005 014 381 U1 a refrigeration device according to the preamble of claim 1 is known in which ribs which carry a pull-out container, are formed on side walls of the inner container. On a front end of the ribs in each case a cap is pushed to protect the ribs from fretting by the pushed back on them and containers.

Although the cap can protect the front ends of the ribs, which are thinner-walled than other parts of the inner container, due to the usual production technique of deep-drawing from flat material, from frictional wear; However, especially in an extended stop position, high forces can act on the ribs via the protective caps, which likewise must not lead to any damage. These forces determine the minimum thickness that the flat material used to make the inner container must have. That is, this minimum thickness is still significantly higher than would be required to ensure at other, less stressed points of the inner container sufficient load capacity. However, a high use of material not only causes high costs, but the associated high wall thickness also leads to problems when forming detailed contours, especially in the edge region of the inner container.

The object of the invention is to provide a refrigerator with an inner container and removable from the inner container containers in which the wall thickness of the inner container can be kept low without the risk of damage to the inner container is due to overloading.

The object is achieved by a refrigeration device having the features of claim 1. While in the conventional construction, the force acting on a withdrawn container torque of two pairs of above and below the container arranged caps must be collected, so that the lower cap in addition to the weight of With the construction according to the invention, at least part of this pressure between the counter-pressure surfaces and the upper protrusions is effective so that the compensating counterpressure exerted by the lower protrusion, although the moldings, will be effective in compensating the container and its contents under internal voltage sets, the inner container itself but is relieved of this voltage. Additional pressure is absorbed by the second container, in particular in the extended stop position.

In addition to the container, a plate may rest on the lower protrusions of the paired opposing moldings.

In order to support the plate, the lower projection of a molding does not have to protrude farther than the upper projection from the sidewall, so that the usable width of the inner container below the plate is only slightly impaired.

The support surface of the withdrawable container may be supported by the plate on the lower projections.

If the plate is flat, the container can slide on it, so that no frictional wear surfaces for the pull-out container on the side walls of the inner container are required. This also allows to keep the wall thickness of the inner container low.

In order to fix the plate in the inner container so that it can not follow when pulling out the pull-out container, a rising step is expediently formed at a front end of a horizontal support flank of the lower projection.

To fix the plate without play, the mold parts may each have a biased by the plate finger. Preferably, this finger exerts a force directed downwardly and / or inwardly of the inner container into the plate to urge it against the support flank and / or against a stop near a rear wall of the inner container.

In particular, this finger may extend around the step of the lower projection in the form of a hook, wherein a free end section of the finger faces the horizontal support flank.

The counter-pressure surfaces are preferably formed on laterally projecting ribs of the first container. Thus, the vertical distance between support and counter-pressure surfaces can be kept small, and accordingly compressed the mold parts can be formed.

In order to fix the withdrawn stop position of the pull-out container, at least one of its ribs has at its rear end a rising flank which, in the extended stop position, rests against a rear flank of the upper projection.

Preferably, the flank of the rib and the rear flank of the upper projection rise obliquely to the rear. Thus, the flank of the rib can simultaneously form the above-mentioned counter-pressure surface, which presses in the extended stop position from below against the upper projection. In addition, by tilting the container, the flank of the rib is rotated in the horizontal and the container over the stop position also pulled out and finally removed. Preferably, the slope of the two flanks is less than 45 °.

Conveniently, at least one of the ribs at its front end to a rising edge, in an inserted stop position of the container a front edge of the upper projection rests. This edge defines an inserted stop position of the pull-out container regardless of any dimensional tolerances of the inner container.

In order to withstand the pressure that can act on the upper edge of the second container in the pulled-out state, it is preferably reinforced at least locally, in particular in a rear region, by a rib.

In order to create a highly rigid structure with little use of material, at least one of the ribs expediently has a truss structure with two elongate webs, each forming an upper or lower flank of the rib, and struts interconnecting the webs.

The projections of the shaped body may be hollow inside; In order to improve their resilience, they are suitably stiffened by the inner cavity crossing ribs.

In order to simplify the assembly of the moldings, these expediently each have a base plate from which protrude the projections, and which is received positively in recesses of the side walls.

Fig. 1

eine perspektivische Ansicht eines Kältegeräte-Innenbehälters mit einer Mehrzahl von darin geführten Auszugkästen;

Fig. 2

eine Draufsicht auf eine Seitenwand des Innenbehälters mit zwei Formteilen und einem zwischen den Formteilen gehaltenen Auszugkasten in einer eingeschobenen Anschlagstellung;

Fig. 3

eine Ansicht eines Formteils, gesehen von hinten in Bezug auf die Tiefenrichtung des Innenbehälters der Figuren 1 und 2;

Fig. 4

eine zu Fig. 2 analoge Draufsicht, die den Auszugkasten in einer herausgezogenen Anschlagstellung zeigt; und

Fig .5

eine Draufsicht auf ein Formteil, gesehen von dessen in montiertem Zustand einer Innenwand zugekehrten Seite her.

Further advantages of the invention will become apparent from the following description of exemplary embodiments with reference to the accompanying figures. Show it:

Fig. 1

a perspective view of a refrigeration device inner container with a plurality of extracting boxes guided therein;

Fig. 2

a plan view of a side wall of the inner container with two mold parts and a held between the mold parts drawer in an inserted stop position;

Fig. 3

a view of a molding, seen from the rear with respect to the depth direction of the inner container of the FIGS. 1 and 2 ;

Fig. 4

one too Fig. 2 similar plan view showing the drawer in an extended stop position; and

Fig. 5

a plan view of a molded part, seen from its in the assembled state of an inner wall facing side.

Fig. 1 shows a perspective view of a manner known per se by deep drawing a board made of thermoplastic plastic inner container 1 of a household refrigerator, in particular a freezer. The inner container has an open front side with a frame 2 in which circumferential sharp-edged steps are formed for fastening outer wall elements (not shown) of the refrigeration appliance body. Of the two side walls 3 of the inner container is one in the representation of Fig. 1 omitted in order to show pulled out in the inner container pull-out boxes 4, 5, 6 and the pull-out boxes 4, 5 supporting moldings 7 can. The moldings 7 each have a flat base plate 8, which is received in a form-fitting manner in a shallow depression of the side walls 3, and two protrusions 9, 10 equally projecting from the side walls 3 into the inner container.

Fig. 2 shows the top view of the two moldings 7 of the right side wall 3 of the inner container 1 and, in cross section, the pull-out box 5 guided between them. The adjacent pull-out boxes 4, 6 are not shown for the sake of simplicity, but the following explanations apply to the interaction of the pull-out box 5 with him carrying moldings 7 analogous to the pull-out box. 4

The two in Fig. 2 Shaped body 7 shown are identical. As best seen on the upper mold body 7, the upper projection 9 each has substantially the shape of a rectangle, in which a (relative to the depth direction of the inner container 1) rear lower corner is cut off and replaced by an oblique edge 11. In an analogous manner, the lower projection 10 on its underside front and rear oblique edges 12 and 13, respectively. A horizontal flank 14 at the top of the Projection 10 is completed forward by a rising step 15. An elastic finger 16 is connected to the projection 10 via a root portion extending the flank 12 and extends hook-like around a front flank 17 and the step 15 and terminates in a section 18 tapering downwardly and forwards on the step 15.

Fig. 3 shows a view of the shaped body 7 seen in the Fig. 2 denoted by III, parallel to the side walls 3 direction. It can be seen here in particular that the finger 16 is separated from the base plate by a gap 19, so that it is elastically deflectable in the direction of the arrow III.

Relegated to Fig. 2 is to see the lower mold body 7 of the fingers 16 in an elastically deflected position in which it is held by a plate 20, here a solid plate made of safety glass, whose front portion rests on the horizontal edge 14 of the molding 7. A rear edge region of the plate 20 is supported in any other suitable manner on the inner container 1, for example by means of not shown second moldings or deep in a rear region of the side walls 3 bearing surfaces 21 (see Fig. 1 ). The finger 16, by virtue of its elastic deformability, allows the plate 20 to be fixed without play, at least in the depth direction of the inner container, irrespective of any dimensional tolerances of the inner container 1, for example by pressing it against a step of these contact surfaces 21.

The plate 20 carries the drawer 5, of which in Fig. 2 a portion of its large surface resting on the plate 20 bottom plate 22 and a double-walled front panel 23 can be seen in section. A side wall 24 of the pull-out box 5 is shown transparent in order to be able to show ribs 25, 26 facing the adjacent side wall 3 on its outer side facing away from the cutting plane.

An upper edge 27 of the side wall 24 extends over a large part of its length horizontally close to a lower flank 28 of the upper mold body 7. An obliquely rising portion 29 at the front end of the upper edge 27 abuts against the flank 12 of the upper mold body 7. The rib 25 stiffens a rear portion of the upper edge 27.

The lower rib 26 extends not far from the bottom plate 22 and terminates forward with an upwardly directed projection 30 which bears against a front vertical flank 31 of the projection 9 of the lower mold body 7. This contact and the contact of the section 29 with the flank 12 define an inserted stop position of the pull-out box 5.

Both ribs 25, 26 have a honeycomb or truss-like structure with two parallel, horizontally elongate webs 32 and the webs 32 interconnecting short vertical ribs 33. Of the webs 32 and ribs 33 limited compartments 34 are each open to the adjacent side wall 3 out ,

Fig. 4 shows the drawer 5 in an extended stop position. The two ribs 25, 26 each have an obliquely rising flank 35 and 36 at their rear end. By the flank 25, the flank 13 of the upper mold body 7 and the flank 36, the flank 11 of the lower mold body each surface touches, the stop position of the pull-out box 5 is fixed. In this stop position, the weight of the pull-out box 5 and its contents rests substantially on the front edge of the plate 20. The inclination of the flanks 35, 36 allows despite possible manufacturing tolerances of the pull-out box 5 and the mold parts 7, the pull-out box 7 with resting on the plate 20 Floor 22 is preferable until at least one of the flanks 35, 36 abuts from below against one of the projections 9, 10. In the extended stop position, the focus of the pull-out box 5 is located in front of the front edge of the plate 20. Since the drawer is clamped between the plate 20 and the projections 10, 9 without play, it can not tilt forward when it is released. The refrigerated goods therefore remain quiet in the drawer 5 are, and the user is given the impression despite the simplicity of the guide that the drawer is guided safely and precisely.

In the case of the upper pull-out box 4, which has no shaped body 7 above it, an oblique surface on the ceiling of the inner container 1 replaces its flank 13.

When the drawer 5 is released in the withdrawn stop position, the flanks 25, 26 exert upward pressure, represented by arrows F1, F2, on the projections 9, 10 of the lower or upper shaped body 7. The force acting on the plate 20 along its leading edge, represented by an arrow G, settles Therefore, together from the weight of the box and counter forces to the forces F1 and F2. While F2 and G set a lying between the moldings 7 region of the side wall 3 under tension and the corresponding forces can be introduced only along an upper or lower edge of its two base plates 8 in the side wall 3, which is between the projections 9, 10th of the lower projection of the forces G and F1 generated by a purely internal stress of the molded body 7. The side wall 3 is therefore nowhere selectively exposed to the entire force G. The resulting from the forces F1 and G torque is distributed over the circumference of the base plate 8 introduced into the side wall 3, and by this size is made large enough, a favorable leverage can be achieved, which prevents overloading of the side wall 3, even at low power ,

If the user raises the drawer 5 in the extended stop position on its front panel 23, this can assume a skew in which the flanks 25, 26 can pass under the projections 9, 10, so that the drawer 5 over the stop position and pulled out the inner container 1 can be removed.

The highest loads occur directly on the projections 9, 10, namely on their flanks 14 and 11, respectively. In order to make them highly loadable with little use of material, the projections 9, 10 on the one hand hollow, but on the other hand stiffened in their interior by ribs 37, 38. In the case of the upper projection 9, the rib 37 is γ-shaped with a flank 11 perpendicular to the first leg and two other legs, which distribute the stress in the longitudinal direction of the first leg on two other outer flanks of the projection 9. In the cross-sectionally larger projection 10, the rib 38 forms a central hollow cylindrical section with radial to the flanks 14, 17, 28, 13 projecting spokes.

An embossed mark 39 on the side wall 3 facing surface of the base plate 8 of the molding 7 denotes the side wall 3, right or left, of the inner container 1, on which the molded body 7 is provided for mounting.

Claims (15)

1. Refrigerator, in particular a domestic refrigerator, having an internal compartment (1) surrounding an internal space and a first container (4, 5) which is supported at least in sections on side walls (3) of the internal compartment (1) by means of two moulded parts (7) and is arranged in a withdrawable manner, wherein the moulded parts (7) each have an upper and a lower projection (9, 10) which projects into the internal space of the internal compartment (1), characterised in that at least one supporting surface (22) of the first container (4, 5) is supported on the lower projections (10) of the moulded parts (7), in that counter-pressure surfaces (36) of the first container touch the upper projections (9) at least in a withdrawn stop position of the container (4, 5) and in that a second container (5) can be arranged in a withdrawable manner beneath the first container (4) and has an upper edge (27) which in a withdrawn stop position strikes against a flank (13) of the lower projection (10).
2. Refrigerator according to claim 1, characterised in that a plate (20) rests on the lower projections (10) of the opposing pairs of moulded parts (7).
3. Refrigerator according to claim 2, characterised in that the lower projection (10) of one of the moulded parts (7) does not stick out further than the latter's upper projection (9) from the side wall (3) supporting the moulded part (7).
4. Refrigerator according to claim 2 or 3, characterised in that the first container (4, 5) is supported by way of the plate (20) on the lower projections (10).
5. Refrigerator according to one of the preceding claims, characterised in that a rising step (15) is formed at a front end of a horizontal supporting flank (14) of the lower projection (10).
6. Refrigerator according to one of claims 2 to 5, characterised in that the moulded parts (7) have a finger (16) exerting a force onto the plate (20) which is directed downwards and/or into the interior of the internal compartment (1) and is pre-tensioned by the plate (20).
7. Refrigerator according to claim 6, characterised in that the finger (16) extends in a hook shape around a front flank (17) of the lower projection (10) and faces a free end section (18) of the finger (16) of the horizontal supporting flank (14).
8. Refrigerator according to one of the preceding claims, characterised in that the counter-pressure surfaces (36) are formed at laterally projecting ribs (26) of the first container (4, 5).
9. Refrigerator according to claim 8, characterised in that at least one of the ribs (26) at its rear end has a rising flank (30) which in a withdrawn stop position of the container (4, 5) abuts on a rearward flank (11) of the upper projection (9).
10. Refrigerator according to claim 9, characterised in that the flank (36) of the rib (26) and the rearward flank (11) of the upper projection (9) rise obliquely backwards, preferably at a pitch of less than 45°.
11. Refrigerator according to one of claims 8 to 10, characterised in that at least one of the ribs (26) has at its front end a rising flank (30) which in a retracted stop position of the container (4, 5) abuts a front flank (31) of the upper projection (9).
12. Refrigerator according to one of the preceding claims, characterised in that the upper edge (27) of the second container (5) is reinforced, at least locally, in particular in a rear region, by a rib (25).
13. Refrigerator according to one of claims 8 to 12, characterised in that at least one of the ribs (25, 26) has a lattice structure with in each case two elongated webs (32) forming an upper and lower flank and the webs (32) having interconnecting braces (33).
14. Refrigerator according to one of the preceding claims, characterised in that the projections (9, 10) are internally hollow and are reinforced by cross-ribs (37, 38) in the internal cavity.
15. Refrigerator according to one of the preceding claims, characterised in that the moulded parts (7) each have a base plate (8), from which the projections (9, 10) stick out, and in that the base plates (8) are accommodated in a form-fit manner in depressions in the side walls (3).

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