EP2609385B1 - Refrigerator comprising a pull-out container for refrigeration articles - Google Patents

Description

The invention relates to a refrigeration device, in particular a household refrigeration device, comprising an inner container with an opening at the front, which can be closed by a door leaf, for removing and / or inserting refrigerated goods, and an extendable refrigerated goods container, and storage means for extending the refrigerated goods container in the inner container. The DE 92 06 166 U1 describes a drawer guide, preferably for built-in or freezer units, with guide rails attached to the side parts of the cabinet, in which two castors are mounted on both sides of the drawer and are mounted on the drawer at the front end of the drawer , in the outer insert-side end region of the guide rails on the side walls of the body part, two rollers are supported coaxially, which are supported on the lateral edge regions of the bottom of the drawer.

The JP 09280727 A describes a pull-out container that has two rollers at its rear end. Two further rollers are arranged on a front of a base of a refrigeration device. The two rollers of the rear end of the pull-out container, together with the two other rollers on the front of the base of the refrigerator, form the storage means for pulling out the pull-out container.

The US 1,888,041 describes a refrigerator with a pull-out refrigerated goods container, on the bottom of which there are two laterally opposite rollers arranged on a rear area of the refrigerated goods container, which roll along a counter surface on the bottom of the inner container in the pull-out direction.

The object of the invention is to provide a refrigeration device in which a refrigerated goods container can be easily pulled out or pushed in from an inner container by an inexpensive storage means.

A refrigeration device is understood in particular to mean a household refrigeration device, that is to say a refrigeration device that is used for household management in households or possibly also in the catering sector is used, and in particular serves to store food and / or beverages in household quantities at certain temperatures, such as a refrigerator, a freezer or a fridge-freezer.

The object is achieved according to the invention by a refrigeration device, in particular a household refrigeration device, comprising an inner container with a front opening that can be closed by a door leaf for removing and / or inserting refrigerated goods, and an extendable refrigerated goods container, as well as storage means for extending the refrigerated goods container in the inner container which the bearing means has at least one slide bearing point arranged on a front region of a bottom of the inner container, on which a counter sliding bearing surface of a bottom of the refrigerated goods container is supported, and has at least one roller arranged on a rear region of the bottom of the refrigerated goods container that runs along a counter running surface on the bottom Inner container rolls in the pull-out direction.

The refrigerated goods container can be stored, for example, in a cold room in which food is stored at temperatures between approximately zero degrees Celsius and, for example, plus eight degrees Celsius. Alternatively, the refrigerated goods container can be stored in a freezer compartment, in which food is frozen or deep-frozen at temperatures between approximately minus five degrees Celsius and, for example, minus eighteen degrees Celsius. In particular, two or more refrigerated goods containers with storage means according to the invention can also be arranged in the respective cold room or freezer room.

With extendable or insertable storage, it is understood in particular that the refrigerated goods container is slidably mounted within a horizontally oriented plane, in particular can be pulled forward like a drawer via an opening at the front with the door panel of the refrigeration device open, and can be completely pushed back into the refrigerator or freezer compartment, so that the door leaf can close the opening of the refrigerator again.

According to the invention, the at least one refrigerated goods container instead of by means of telescopically extendable, permanently installed metal rails or instead of a mere sliding adjustment, in which a bottom of the refrigerated goods container slides directly on a bottom of the inner container, by means of a simultaneously occurring or interacting sliding friction and rolling friction by the storage means according to the invention extendable or retractable.

The storage means has at least one roller rotatably mounted on the refrigerated goods container. In one configuration, only a single roller, for example in a central region of a rear section, can be mounted on the bottom of the refrigerated goods container. The single roller can be combined with, for example, two counter slide bearing locations on the front, which are arranged at a clear distance from one another, in particular at two front corner regions of the bottom of the refrigerated goods container. This results in a three-point support for the refrigerated goods container on the bottom of the inner container.

If the bottom of the inner container is referred to in the context of the invention, this may not only be understood to mean one or the only bottom inner wall of the inner container, but also one or more intermediate shelves that are separately inserted, inserted or otherwise fastened into the inner container .

Typically, a four-point support can be realized by having a roller, i.e., a roller, on two rear corner areas of the bottom of the refrigerated goods container. A total of two rollers are provided per refrigerated goods container, each with a counter slide bearing on the two front corner areas of the bottom of the refrigerated goods container, i.e. interact with a total of two counter slide bearing points per refrigerated goods container.

In this respect, in one embodiment according to the invention, two rollers can be rotatably mounted on the rear region of the bottom of the refrigerated goods container on opposite lateral sides of the refrigerated goods container. On opposite lateral sides can mean that the two rollers are arranged on the bottom of the refrigerated goods container at a distance from one another that is only slightly smaller than the width of the refrigerated goods container. This means that the rollers with their treads protrude from the bottom of the refrigerated goods container downwards towards the bottom of the inner container, but the rollers are arranged near the lateral side walls of the refrigerated goods container.

The same can apply to the counter-running surfaces which, in an embodiment according to the invention, can be attached to the front area of the bottom of the refrigerated goods container on opposite lateral sides of the refrigerated goods container. On opposite lateral sides can also mean that the two mating surfaces on the bottom of the refrigerated goods container are arranged at a distance from one another which is only slightly smaller than the width of the refrigerated goods container. This means that the mating surfaces can protrude from the bottom of the refrigerated goods container downwards in the direction of the bottom of the inner container, but the mating surfaces are arranged near the lateral side walls of the refrigerated goods container.

The refrigerated goods container can generally have an adjusting device on which the at least one roller, in particular the two rollers, are mounted such that they can be displaced in the pull-out direction. The roller can for example be arranged between two vertically aligned side wall sections of the bottom of the refrigerated goods container. The two vertically aligned side wall sections can have a number of aligned bores. The bores can be arranged at intervals from one another, in particular at regular intervals from one another, and the series of bores can extend in the direction of extension. The roller can then be rotatably mounted in different positions in the pull-out direction on the refrigerated goods container in that an axle pin is inserted through two aligned bores of the two vertically aligned side wall sections, the axle pin also penetrating a hub of the roller. To this extent, the roller can be rotatably supported by means of the axle pin. For example, the axle pin can be inserted non-rotatably in the bores and the hub of the roller can have a slightly larger diameter than the diameter of the axle pin, so that the roller is rotatably mounted on the fixed axle pin. Alternatively, the hub or the roller can be fixed, for example in the form of a slight press fit, to the axle pin and the roller can be rotatably mounted on the refrigerated goods container such that the axle pins can rotate in the bores.

The rollers can have a tread made of a thermoplastic, in particular with a sliding friction coefficient between 0.3 and 0.5 μ, in particular between 0.38 and 0.42 μ, in particular made of polyoxymethylene (POM). Such a selection of the sliding friction coefficient for the running surface of the rollers can, according to the invention, cause the refrigerated goods container to be pulled out of the inner container with little effort even with blocked rollers and / or stiff rollers or can be pushed in. According to the invention, a stuck roller can form another slide bearing.

In all the embodiments according to the invention, two, in particular separate slide bearing points can be arranged on opposite sides of the inner container on the front area of the bottom of the inner container. The slide bearing points can interact with the counter slide bearing points of the refrigerated goods container. The plain bearing points can thus be attached to the bottom of the inner container on the same track width as the counter-plain bearing locations.

The sliding bearing points can have a sliding surface made of a thermoplastic, in particular with a sliding friction coefficient between 0.3 and 0.5 μ, in particular between 0.38 and 0.42 μ, in particular made of polyoxymethylene (POM). The plain bearing points can generally have the same sliding friction coefficient as the counter-sliding bearing points and / or the running surfaces of the rollers.

In all of the embodiments according to the invention, the at least one, in particular two, slide bearing points can be locked, screwed, glued, foamed or integrally formed with the inner container, in particular with a bottom of the inner container, as separate components. When the sliding bearing points are mounted in a latching manner on the bottom of the inner container, the sliding bearing points can be formed on, for example, strip-like inserts which have latching means which interact with corresponding counter-latching means on the bottom of the inner container. The plain bearing points can engage with the inner container by pressing the plain bearing points onto the floor. Alternatively, the slide bearing points, which can be formed, for example, on strip-like inserts, have bores, by means of which the slide bearing points can be screwed directly onto the bottom of the inner container by means of screws. In another embodiment, the slide bearing points, which can be formed, for example, on strip-like inserts, can have an adhesive surface with which the slide bearing points can be glued to the bottom of the inner container. However, the plain bearing points can also be formed as separate components and foamed into insulating material that is connected to the inner container. Alternatively, the plain bearing points can also be molded directly into a wall of the inner container, ie tightened.

In addition to the storage means according to the invention, as described, the refrigerated goods containers according to the invention can have guides which can prevent or reduce tilting and / or tilting of the refrigerated goods container during pulling out and / or pushing in. In this respect, the at least one, in particular two, slide bearing points can form a side guide rail in cooperation with side walls or ribs of the refrigerated goods container. The side guide rail guides the refrigerated goods container in the direction of extension or insertion.

In the version with a side guide rail, the at least one, in particular two, slide bearing points can each have a groove in which a spring rib of the refrigerated goods container engages. The spring rib can protrude downward from the bottom of the refrigerated goods container and thus engage in the groove. The groove can be attached to the bottom of the inner container or be formed on the bottom of the inner container. For example, the groove can be molded into the wall of the inner container, i.e. be tightened on the inner container.

In an alternative embodiment with a side guide rail, the side walls or ribs of the refrigerated goods container can each have a groove in which the at least one, in particular two, slide bearing points or a spring rib of the slide bearing points engage.

The side guide rail can also have a stop that determines a maximum insertion depth of the refrigerated goods container. Alternatively, a separate stop can be provided, for example on a rear wall of the inner container. The stop can serve to keep the inserted refrigerated goods container at a defined distance from the rear wall of the inner container. As an alternative or in addition, the stop can serve to brake the speed of a refrigerated goods container running in, so that no undesirable noises occur and / or refrigerated goods stored in the refrigerated goods container, in particular shock-sensitive goods, are not damaged by jerky impact of the refrigerated goods container on the rear wall of the inner container.

Alternatively or in addition, the inner container, in particular on its inner side walls, can have at least one retaining rib which has a maximum extension width of the refrigerated goods container determined. The retaining rib can act analogously to the stop, where this effect does not act when the refrigerated goods container is pushed in, but when the refrigerated goods container is pulled out. The retaining rib can thus serve to protect the pulled-out refrigerated goods container from falling out completely. As an alternative or in addition, the retaining rib can serve to brake the speed of an outflowing refrigerated goods container, so that no undesirable noises occur and / or refrigerated goods stored in the refrigerated goods container, in particular shock-sensitive goods, are not damaged by jerky impact of the refrigerated goods container on the retaining rib of the inner container.

In other words, the invention can relate to a household refrigerator with a shell body, i.e. a refrigerated goods container that can be easily removed from a container provided for this purpose, such as a freezer or refrigerator compartment of the household refrigeration device. The position means according to the invention can be used, for example, as additional elements attached to conventional shell bodies, i.e. Refrigerated goods container attached and / or attached to an inner container of the household refrigerator. Attachment or fastening can be carried out, for example, by means of snap connections, clamp connections and / or screw connections.

Guide surfaces can also be provided, in particular molded, on the refrigerated goods container. The refrigerated goods container can be made of plastic, for example polystyrene (PS) or polypropylene (PP).

By means of the storage means according to the invention, a pull-out system for refrigerated goods containers can be implemented which allows the refrigerated goods container to be guided and operated very easily in the domestic refrigeration device. According to the invention, the refrigerated goods container can be pulled out and pushed in by means of the storage means using a combination of rolling friction and sliding friction.

On the shell body, ie the refrigerated goods container, a wheel can be attached laterally in the rear part, for example. The wheels can be rotatably mounted on the shell body, ie the refrigerated goods container, by means of a snap, clamp or screw connection. The wheels can be made of plastic. The wheels can in particular be made of a plastic that has high sliding properties. So the wheels can be made of polyoxymethylene (POM) or other material with similar properties.

In addition to the wheels on the side of the refrigerated goods container, sliding elements, i.e. Plain bearing points are provided or attached. The sliding elements, i.e. Like the wheels, plain bearings can be made of polyoxymethylene (POM) or another material with similar, good sliding properties. The sliding elements, i.e. Plain bearing points can be snapped, screwed or foamed into the inner container. In their main function, the sliding elements serve as sliding bearing points for the shell body, i.e. for the refrigerated goods container. It can also be used as a guide element for the shell body, i.e. for the refrigerated goods container and, if necessary, even as a stop, i.e. Stopper, for example to prevent the shell body or the refrigerated goods container from hitting an inner rear side of the inner container in a fully inserted position. Tilting in the extended state can be prevented above the shell body, i.e. of the refrigerated goods container, a rib can be provided in the inner container, which engages over the edge of the shell body or the refrigerated goods container from above. In addition, the rib can be used to store a refrigerated goods shelf, such as a glass plate.

The combination of rolling friction and sliding friction has proven itself very well as a pull-out support for trays or containers in household refrigeration devices. The positioning of the wheel and the elements in the inner container can also be changed, so that the rollers and the sliding elements can be coordinated very well. The sliding elements attached in the inner container ensure optimal power transmission from the shell to the inner container and the additionally attached wheels ensure good extensibility.

It can be advantageous that, in addition to the simpler rolling friction, sliding properties are also present, which can be realized from the material of the inner container and the shell material. Compared to today's pull-out technology, this variant is a relatively cheap solution.

An exemplary embodiment of the invention is based on the Figures 1 to 3b described. Further general features and advantages of the present invention also result from the detailed description of this specific exemplary embodiment.

Fig. 1

eine perspektivische Schnittansicht aus einem Haushaltskältegeräts mit einem erfindungsgemäßen Kühlgutbehälter;

Fig. 2

eine perspektivische Schnittansicht aus dem Kühlgutbehälter gemäß Fig. 1 im Bereich einer erfindungsgemäßen Laufrolle;

Fig. 3a

eine schematische Darstellung des erfindungsgemäßen Kühlgutbehälters in einer eingeschobenen Stellung;

Fig. 3b

eine schematische Darstellung des erfindungsgemäßen Kühlgutbehälters in einer ausgezogenen Stellung.

Show it:

Fig. 1

a perspective sectional view of a household refrigerator with a refrigerated goods container according to the invention;

Fig. 2

a perspective sectional view of the refrigerated goods container according to Fig. 1 in the area of a roller according to the invention;

Fig. 3a

a schematic representation of the refrigerated goods container according to the invention in an inserted position;

Fig. 3b

is a schematic representation of the refrigerated goods container according to the invention in an extended position.

An in Fig. 1 Section of a refrigeration device 1, shown as an example, shows a cut-away view of a lower section of an inner container 2, in which a refrigerated goods container 3 is arranged, which can be pulled out in the inner container 2. The inner container 2 has a closable opening 4 on the front for removing and / or inserting refrigerated goods. The refrigerated goods container 3 is extendable and stored in the inner container 2. Storage means 5 are provided for this. In the exemplary embodiment shown, the bearing means 5 have slide bearing points 6a and 6b arranged on a front area of the inner container 2, on which a counter-sliding bearing surface 7a and 7b of the refrigerated goods container 3 is supported. In the exemplary embodiment shown, the bearing means 5 further have rollers 8a and 8b arranged on a rear region of the refrigerated goods container 3, which roll along a counter-running surface 9a and 9b on the inner container 2 in the pull-out direction. In the exemplary embodiment shown, two rollers 8a and 8b are rotatably mounted on the rear region of the refrigerated goods container 3 on opposite sides of the refrigerated goods container 3. Against a tilting of the refrigerated goods container 3 in the extended position, in the exemplary embodiment a rib 13 is attached or molded or tightened to one or both side walls 2a of the inner container 2. The rib 13 serves to guide the refrigerated goods container 3 from above on the lateral edges of the refrigerated goods container 3. A storage surface or glass plate, not shown, can be placed on an upper side of the rib 13.

The refrigerated goods container 3 has in the illustrated embodiment of the Fig. 2 an adjusting device 10 on which the at least one roller 8a, 8b, in particular the two rollers 8a and 8b, are mounted so as to be displaceable in the pull-out direction. For this purpose, the adjusting device 10 can have a multiplicity of bores 11. In the exemplary embodiment shown, the bores 11 are arranged evenly spaced apart from one another and extend along a pull-out direction of the refrigerated goods container 3. An axle pin 12 can optionally be inserted into one of the bores 11. The axle pin 12 penetrates a hub of the roller 8a, 8b and thus rotatably supports the roller 8a, 8b on the refrigerated goods container 3. To move the position of the roller 8a, 8b, the axle pin 12 can be pulled out. The roller 8a, 8b is then brought into alignment with another bore 11 in a desired other position and the axle pin 12 is reinserted there, the axle pin again penetrating the hub of the roller 8a, 8b and thus the roller 8a, 8b being rotatable is stored on the refrigerated goods container 3. In the exemplary embodiment shown, a side guide rail 14 is also attached to the bottom of the refrigerated goods container 3 in the vicinity of the roller 8a, 8b. The side guide rail 14 can cooperate with a not shown groove on a bottom of the inner container 2.

As in 3a and 3b 2, sliding bearing points 15 can be arranged on a front area of the inner container. Two slide bearing points 15 can be provided on opposite sides of the inner container 2. The slide bearing points 15 can be latched, screwed, glued, foamed or integrally molded onto the bottom of the inner container 2 as separate components. The two slide bearing points 15 can also interact with the side walls 3a of the refrigerated goods container 3 ( Fig. 2 ) form a side guide rail 14a. In the exemplary embodiment, a handle 17 is arranged on a drawer front 16 of the refrigerated goods container 3.

Claims (12)

1. Refrigeration appliance, in particular household refrigeration appliance, having an inner container (2) with a front opening (4) which can be closed off by a door leaf for the removal and/or depositing of refrigerated goods, and a pull-out refrigerated goods container (3), as well as mounting means (5) for mounting the refrigerated goods container (3) in the inner container (2) in a pull-out manner, wherein the mounting means (5) has at least one roller (8a, 8b) arranged on a rear region of the base of the refrigerated goods container (3), which roller rolls along a counter rolling area (9a, 9b) on the base of the inner container (2) in the pull-out direction, characterised in that the mounting means (5) has at least one slide bearing point (6a, 6b) arranged on a front region of a base of the inner container (2), against which a counter-slide bearing area (7a, 7b) of a base of the refrigerated goods container (3) is supported.
2. Refrigeration appliance according to claim 1, characterised in that two rollers (8a, 8b) are mounted in a rotatable manner on opposite sides of the refrigerated goods container (3) on the rear region of the base of the refrigerated goods container (3).
3. Refrigeration appliance according to claim 1 or 2, characterised in that the refrigerated goods container (3) has an adjusting device (10), on which the at least one roller (8a, 8b), in particular the two rollers (8a, 8b), are mounted such that they can be displaced in the pull-out direction.
4. Refrigeration appliance according to one of claims 1 to 3, characterised in that the rollers (8a, 8b) have a roller area made of a thermoplastic, in particular with a sliding friction coefficient between 0.3 and 0.5 µ, in particular between 0.38 and 0.42 µ, in particular made of polyoxymethylene (POM).
5. Refrigeration appliance according to one of claims 1 to 4, characterised in that two, in particular separate slide bearing points (6a, 6b) are arranged on opposite sides of the base of the inner container (2) on the front region of the base of the inner container (2).
6. Refrigeration appliance according to claim 5, characterised in that the slide bearing points (6a, 6b) have a slide area made of a thermoplastic, in particular with a sliding friction coefficient between 0.3 and 0.5 µ, in particular between 0.38 and 0.42 µ, in particular made of polyoxymethylene (POM).
7. Refrigeration appliance according to one of claims 1 to 6, characterised in that the at least one, in particular two slide bearing points (6a, 6b) are latched to, screwed to, adhesively bonded to, foamed into or integrally shaped onto the inner container (2), in particular to a base of the inner container (2), as separate components.
8. Refrigeration appliance according to one of claims 1 to 7, characterised in that the at least one, in particular two slide bearing points (6a, 6b) form(s) a side guide rail in conjunction with side walls or ribs of the refrigerated goods container (3).
9. Refrigeration appliance according to claim 8, characterised in that the at least one, in particular two slide bearing points (6a, 6b) each have a groove, into which a spring rib of the refrigerated goods container (3) engages.
10. Refrigeration appliance according to claim 8, characterised in that the side walls or ribs of the refrigerated goods container (3) each have a groove, into which the at least one, in particular two slide bearing points (6a, 6b) or one spring rib of the slide bearing points (6a, 6b) in each case engages.
11. Refrigeration appliance according to one of claims 8 to 10, characterised in that the side guide rail has an end stop, which determines a maximum insertion depth of the refrigerated goods container (3).
12. Refrigeration appliance according to one of claims 1 to 11, characterised in that the inner container (2), in particular on its inner side walls, has at least one retaining rib, which determines a maximum pull-out distance of the refrigerated goods container (3).

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