Exemplary embodiments of the invention relate to a household appliance, in particular a refrigerator or a freezer, comprising a body having an opening that can be closed by means of a front panel. Further, the household appliance comprises a storage container which is movable out of the body through the opening and is liftable.
In addition to compartments, household appliances such as refrigerators or freezers often have containers that can be moved out of the body, e.g., stored on guide rails, in order to put away or remove products to be stored. If the containers are arranged in a lower area of a household appliance that extends to the floor, this can be cumbersome for users.
EP 1 630 506 B1 describes a refrigerator in which a basket is displaceably arranged in a drawer, wherein the basket is assigned a lifting device which, after the drawer has been moved out, can lift the basket, driven by a drive unit, so that products can be stored or removed more easily. The lifting device comprises a frame mounted for linear movement on vertically aligned guide rails, on which the basket is positioned as a storage container. For raising and lowering the lifting frame, an electromotively driven pivot arm is provided, which rotatably supports a roller at its free end, which rolls on an underside of the lifting frame. The guides for the lifting frame and also the drive unit with the pivot arm are mounted on the inside of a front panel which, mounted on the aforementioned pull-out guides, can be moved out of the body.
A disadvantage of this arrangement is that the drawer is extended manually, which in turn requires the user to bend down to the drawer. In addition, the mounting of the lifting frame on the extendable front panel means that when the drawer is extended, the entire weight of the storage container rests on the pull-out guides via the front panel, which are accordingly subjected to a high torque when fully extended.
Exemplary embodiments of the present invention are directed to a household appliance of the type mentioned above, in which a storage container can be moved and lifted out of a body without the need for manual intervention. This can be achieved using a drive unit coupled to the storage container in a mechanically simple and as robust as possible manner and which is supported within the body and relieves the front panel.
A household appliance according to the invention is characterized in that at least one pivot arm is arranged on the body and that at least one slotted guide is connected to the front panel or is formed thereon, wherein the storage container is coupled to a free end of the pivot arm on the one hand and is guided in the slotted guide on the other hand.
Via the pivot arm, the storage container can be moved out of the body and lifted by a single movement—the pivoting of the pivot arm. The slotted guide couples the storage container to the front panel, which moves with it and does not have to be driven separately. The slotted guide also performs a guide function for the storage container, which can thus be suitably aligned. In particular, at least part of the guide can be used so that the storage container faces upwards with its loading and unloading opening.
In the context of the application, the term “storage container” refers to any arrangement that enables objects to be stored to be accommodated. In particular, the storage container can also be of multi-part design and comprise a frame-like receptacle, for example, which is coupled to the pivot arm or the slotted guide as indicated and which accommodates at least one removable container.
In a preferred design of the household appliance, the pivot arm is mounted on the storage container in a sliding and pivoting guide. The sliding guide enables the storage container to be moved horizontally, at least in sections, during the pivoting movement of the pivot arm, for example while the storage container is still in the body and is moved over an intermediate bottom of the body.
In a further preferred design, the sliding and pivoting guide is arranged in a rear and lower area of the storage container. In this way, the storage container can be lifted particularly far out of the body and particularly high above its position within the body for a given pivot arm length.
In a further preferred design, a pivoting range of the sliding and pivoting guide is restricted in at least one pivoting direction. This can be carried out, for example, by stopping a stop surface of the pivot arm against a stop. An alignment of the storage container can also be influenced in this way. The guidance via the slotted guide can take place over the entire stroke of the storage container, but does not necessarily have to do so. It is also possible to guide the storage container through the slotted guide only in a lower section of its movement and to determine the alignment of the storage container in an upper section by means of said stop.
In another preferred design of the household appliance, the slotted guide comprises a groove-like guide track that accommodates at least one guide means of the storage container. The at least one guide means may be, for example, a roller or a sliding block. Preferably, two guide means of the storage container are associated with the slotted guide at a distance from each other, so that parallel guidance of the storage container takes place when both guide means are located in the guide track. In a further development, the guide track of the slotted guide is open at the top and widens towards the upper end in the shape of a funnel. In this way, only a sectional coupling of the storage container and the front panel is achieved. In this way, the slotted guide is sufficient to co-move the front panel, but does not restrict further upward movement of the storage container. The widened opening of the guide track ensures that the coupling is resumed when the storage container is retracted.
In order to achieve good and robust guidance of the storage container, there are preferably two pivot arms, each engaging on one side of the storage container. Similarly, there can also be two slotted guides, one on each side of the storage container.
It can also be provided to guide the storage container only centrally with at least one pivot arm and to achieve stability via a connection on both sides of the front panel, e.g., also in combination with synchronizing means.
The front panel can be guided in a linearly displaceable manner on the body by at least one pull-out guide. In the extended position, it can be prevented from moving back by a retraction lock, e.g., with a latching means or a pawl, which is arranged inside or on the pull-out guide. This retraction lock can act non-positively and/or positively and be actuated or released either by the pivot arm or the storage container, so that a locking effect is already activated by lifting the storage container. To ensure the locking function, the retraction lock can optionally be supported by a force accumulator.
Alternatively, it is also conceivable to design the front panel as a flap that can be hinged or pivoted on the body.
In a further preferred design, the household appliance comprises a drive arrangement acting on the at least one pivot arm to pivot the at least one pivot arm between at least two pivot positions. The drive arrangement may comprise, for example, a drive unit with a drive motor and a gearbox. Preferably, the gearbox is self-locking, for example as a worm gear. The storage container then remains in the raised position without further action. Alternatively, blocking or braking devices can be provided to prevent the storage container from sinking.
The drive unit can, for example, act via a belt on a pivot axis on which the at least one pivot arm is arranged in a rotationally fixed manner. Other transmissions, e.g., via levers or directly via intermeshing gears or linear drives, are also possible.
In a further preferred design, the household appliance has a protective covering which is attached to the storage container and extends downward toward the front panel on at least one side of the storage container. The protective covering may be of telescopic design, for example, and may be raised or extended with the storage container. The protective covering prevents objects or body parts from entering a gap between the storage container and the front panel or between other components of the arrangement, at least one of which is moved. The protective covering reduces a risk of entrapment by the moving components.
Particularly advantageously, the described arrangement with the liftable storage container can be implemented in a refrigerator and/or freezer as a household appliance.
The invention is shown below by means of exemplary embodiments with the aid of figures, wherein:
In all figures, identical reference signs indicate identical or similarly acting elements. For reasons of clarity, not every element in all figures is given a reference sign.
In the description, terms such as “above”, “below”, “left”, “right” initially refer to the exemplary representation selected in the respective figures. With regard to the terms “above” and “below”, the representation in the figures coincides with the orientation usually adopted in space. The terms “front” and “rear” are to be understood with respect to the household appliance, wherein at the front of the household appliance there is a front side which faces the user and on which there are doors, flaps, or similar elements of the household appliance.
Before details of the technical realization are explained in the following, an overview of the movement sequence is given. The partial images with the same suffix (a, b, c, etc.) in each case of the three figure sequences of
The household appliance 1 has a body 2 with side walls 21 and two or more floors 22. A rear wall is not shown for reasons of clarity. The household appliance 1 may be, for example, a refrigerator or freezer. As such, it usually has a multi-shell insulating body and technical cooling devices. For reasons of clarity, these are not shown in the illustrations of this application. The representation of the body 2 is to be regarded in that sense as a purely schematic representation.
The body 2 has forward-facing openings, one of which is closed by a front panel 31 (
When a release device is actuated, the movement sequence starts with the extension of this thrust element, as can be seen in
With the front panel 31, the storage container 41 initially moves out of the body 2 essentially towards the front. In further stages of the movement sequence (cf.
It is understood that the opening sequence shown in
With particular reference to
As already mentioned, the entire movement is driven by the drive arrangement 5 and the drive unit 51, which is arranged in a rear area in the body 2. The drive unit 51 provides a rotary motion which, in the example shown, is transmitted via an output gear 52 and a belt 53, in particular a toothed belt, to a drive gear 54 which is connected in a rotationally fixed manner to a pivot axis 45.
The pivot axis 45 extends transversely across the entire width of the body 2 and is rotatably mounted thereon in pivot bearings 46. By way of example, the pivot bearings 46 are mounted on the outside of the shown body 2, which is a possibility, in particular, if the shown body 2 has an outer covering not shown here. In other cases, the pivot bearing 46 may also be arranged in a wall of the body 2 or on the inside thereof.
Two pivot arms 44 are coupled in a rotationally fixed manner to the pivot axis 45, each of which is hinged to the outside of the storage container 41 in its lower area. In the example shown, the drive gear 54 is positioned approximately centrally on the pivot axis 45. This can be implemented differently in alternative designs of a pivot arrangement 4, to which the storage container 41, the pivot axis 45, the pivot bearings 46, and the pivot arms 44 can be assigned. Likewise, the coupling of the drive arrangement 5 to the pivot axis 45 can be implemented alternatively. Instead of a drive unit 5, which converts a rotary motion of the output gear 52 into the pivoting motion of the pivot arms 44 by means of the belt 53, a transmission can also take place with a push rod to the pivot arms 44 directly or a further pivot lever arranged on the pivot axis 45. Instead of a drive unit 5 that provides a rotary motion, a drive unit that provides a linear motion at its output member can also be used.
The pivot axis 45 is positioned in a front and upper region of the body 2 relative to the region in which the storage container 41 is positioned within the body 2. On the storage container 41, the free end of the pivot arm 44 is supported in a combined sliding and pivoting guide 42. Due to this bearing arrangement, a pivoting movement of the pivot arms 44 is transferred into a combined pivoting and lifting movement of the storage container 41, wherein initially there is a certain degree of freedom for the composition of these movements at the storage container 41. In order to achieve a defined movement of the storage container 41, at least one further guide of the storage container 41 relative to the body 2 is provided.
A first of these further guides is provided by a coupling between the storage container 41 and the front panel arrangement 3. In the first exemplary embodiment, a slotted guide 34 is formed for the purpose as part of the front panel arrangement 3, in which guide means 43 of the storage container 41 move in a guided manner. The slotted guide 34 is clearly shown in
Starting from a beginning of the movement sequence, e.g., in
As of the state shown in
Also in the second exemplary embodiment, a front panel 31 is provided that exposes an opening in the body 2 through which the storage container 41 is moved out. In contrast to the first exemplary embodiment, however, the front panel 31 is not guided linearly by a pull-out guide (cf. pull-out guide 32 in the first exemplary embodiment), but is designed as a flap which can be swung open downwards and is pivotably secured to the body 2 by a hinge or pivot arrangement not shown here.
As in the first exemplary embodiment, a slotted guide 34 is formed on the front panel 31 or a common support on each of the sides of the storage container 41, in which the storage container 41 is guided by guide means 43 in sections of the movement sequence. With suitable dimensioning, in particular length and optionally shaping of the guide track of the slotted guide 34, guidance of the storage container 41 can also take place during a pivoting movement of the front panel 31 in such a way that it is moved out of the body 2 by a pivoting movement of the pivot arms 44, thereby opening the front panel 31. Upon further movement, the storage container 41 leaves the guide along the front panel 31 and is guided in a pivoting movement to a convenient removal position substantially corresponding to that shown in
When the pivot arms 44 are pivoted back in, the storage container 41 is first lowered while maintaining its relative pivot position with respect to the pivot arms 44, with the guide means 43 entering the insertion opening 35 of the slotted guide 34. Further pivoting moves the storage container 41 into the body 2 and closes the front panel 31.
As an alternative to the shown straight design of the guide track of the slotted guide 34, a curved design of the guide track can be provided in this exemplary embodiment, as in the first exemplary embodiment, in order to achieve a particularly smooth and harmonious movement sequence of both the storage container 41 and the front panel 31.
In this exemplary embodiment, a protective covering 47 is provided around at least three sides of the storage container 41, specifically the front surface facing the user and the two sides, which is telescopically configured and is raised and extended with the storage container 41. The protective covering 47 prevents objects or body parts from entering a gap between the storage container 41 or other components of the pivot arrangement 4 and the front panel 31 or the frame elements 33 or other components of the front panel arrangement 3. In this way, a risk of entrapment between moving components is reduced.
In this case, the protective covering 47 can be lifted along in the form of an apron and can be provided in addition to a linear guide that is present between the front panel arrangement 3 and the storage container 41. In this case, the linear guide can extend over only part of the vertical movement of the storage container 41, as shown in the first example, or it can be formed over the entire vertical range of movement of the storage container 41 relative to the front panel arrangement 3. In this case, the protective covering 47 can be connected to the storage container 41 or front panel arrangement 3 by means of bolts or elastic elements, such as ropes. Alternatively, the protective covering 47 may have spring elements that push it upwards as soon as the storage container 41 is raised. When the storage container 41 is lowered, it presses down the protective covering 47 against the spring force.
In a further development, the protective device 47 may itself be configured as a linear guide that guides vertical movement of the storage container 41 relative to the front panel arrangement 3.
Also in this exemplary embodiment, a storage container 41 is guided so that it can be extended from a body 2 and lifted, with a front panel arrangement 3 being extended as well. In this exemplary embodiment (as in the first example), the pull-out guide 32 is formed as a full extension pull-out guide comprising a body rail 321 mounted on the body 2, a center rail 322 slidably mounted with respect thereto, and a running rail 323 slidably mounted with respect thereto.
In the exemplary embodiment shown here in
The locking lever 324, together with the actuator 411, forms a retraction lock that ensures that the front panel arrangement 3 cannot be retracted when the storage container 41 is raised, which could otherwise cause the storage container 41 to collide with the front panel arrangement 3 when it is lowered again.
Although the invention has been illustrated and described in detail by way of preferred embodiments, the invention is not limited by the examples disclosed, and other variations can be derived from these by the person skilled in the art without leaving the scope of the invention. It is therefore clear that there is a plurality of possible variations. It is also clear that embodiments stated by way of example are only really examples that are not to be seen as limiting the scope, application possibilities or configuration of the invention in any way. In fact, the preceding description and the description of the figures enable the person skilled in the art to implement the exemplary embodiments in concrete manner, wherein, with the knowledge of the disclosed inventive concept, the person skilled in the art is able to undertake various changes, for example, with regard to the functioning or arrangement of individual elements stated in an exemplary embodiment without leaving the scope of the invention, which is defined by the claims and their legal equivalents, such as further explanations in the description.
Number | Date | Country | Kind |
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10 2020 130 185.5 | Nov 2020 | DE | national |
Filing Document | Filing Date | Country | Kind |
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PCT/EP2021/081112 | 11/9/2021 | WO |