EP3410456A1 - Operating device for a domestic appliance with movable locking magnet in an operating element and household appliance - Google Patents

Abstract

The invention relates to an operating device (7) for a domestic appliance (1), with a control element receptacle (8) and with a control element (9) which can be positioned detachably and placed on the control element receptacle (8), wherein the control element (9) by means of magnetic Holding force on the control element holder (8) is held in the attached state, and the control element (9) to a holding magnet (12), wherein the holding magnet (12) is arranged in a defined movable in the operating element (9). The invention also relates to a household appliance (1).

Description

The invention relates to an operating device for a household appliance. The operating device has a control element receptacle and a control element. The operating element is detachably and positionably positionable on the operating element holder, wherein the operating element is held on the operating element holder in a mounted state by means of a magnetic holding force. For this purpose, the operating element has a holding element-internal holding magnet. Furthermore, the invention also relates to a household appliance with such an operating device.

Control devices in which a separate control element can be placed non-destructively releasably on a control element receptacle and it can be removed again, are well known. For example, such a configuration of the EP 0 797 227 B1 known. In the attached state of the operating element on the operating element recording operating conditions of the household appliance can be adjusted by movements of the operating element. In the local configuration, a holding magnet which interacts with a further holding magnet arranged in the operating element receptacle is fixedly arranged in the operating element in order to generate the magnetic holding force in the mounted state of the operating element on the operating element receptacle. There, it is provided that the holding magnet, which is arranged in the operating element receptacle, is arranged pivotably on a carrier.

In particular, the magnetic field of the holding magnet in the operating element acts permanently and externally to the operating element. Just by the stationary arrangement of the holding magnet adjacent or directly adjacent to an underside of the control element, which rests in the mounted state on the control element recording on this, the magnetic field is generated in particular on this underside of the control element to the outside and in this respect also relatively strong. Especially in the removed state of the control element, thus, this bottom can also come relatively close to a body part of a user, for example, if this control element held in the hand or is placed in a jacket pocket or a shirt pocket.

Since this magnetic field then also acts accordingly strong and with appropriate range on this underside outside of the control element, it can act in the environment and reacting to this magnetic components. As a result, for example, objects can be attracted, which then adhere to the operating element magnetically. This may also be the case, for example, when the operating element is stowed in a drawer in a kitchen in which other metallic objects, in particular magnetically interacting objects, are also present. This can be, for example, pull-out rails on which drawers are slidably mounted. It may then lead in the context to unwanted magnetic brackets of the control element on this rail, which may thereby be optionally blocked or the control then, for example, can not be found. In addition, in this drawer kitchen tools, such as knives or forks, or other scrapers and the like, or even pans and the like, be present, where then the control element can undesirably adhere magnetically. As a result, the operating element can then also be undesirable and can no longer be found for a user. In addition, it can be provided that this magnetic field of the removed control element can act on electronic devices of life aids, such as a pacemaker or a hearing aid, which can lead to impairment of the functioning of these life aids.

It is an object of the present invention to provide an operating device and a household appliance, in which the magnetic field generated by a holding magnet in the operating device is reduced in the unused state of the operating element for the operating device to the outside.

This object is achieved by an operating device and a household appliance according to the independent claims.

One aspect of the invention relates to an operating device for a household appliance. The operating device has a control element receptacle. The operating device furthermore has a control element separate from the operating element receptacle. The operating element can be accommodated on the operating element receptacle and can be positioned in a detachable manner. This means that it can be non-destructively releasably positioned thereon and removed again. The operating element is held by means of magnetic holding force on the operating element holder in the attached state. The control element has for this purpose an internal holding magnet. This holding magnet of the operating element is arranged to be movable in a defined manner in the operating element. This means that it is not permanently permanently installed in it, but that it can be located in different positions therein and can be moved in the context, in particular can be moved to a housing of the operating element. Such a configuration makes it possible for a magnetic field generated by the holding magnet of the operating element to be at least reduced to the outside in specific situations. As a result, it is achieved that the magnetic field of the holding magnet acting beyond the operating element is reduced, especially in situations in which the operating element is not arranged on the operating element holder and is therefore not required or used for the operating device. As a result, the situations mentioned above can at least be mitigated.

In particular, it is provided that the holding magnet of the operating element can be positioned in a use position and in a different stowed position in the operating element. It can thus be taken at least two defined specific positions in the control element itself for the holding magnet. The position of use is the one in which the holding magnet generates the largest possible magnetic field to the outside in order to achieve the highest possible magnetic holding force in the mounted state on the operating element recording. The stowage position is that in which the holding magnet is so positioned inside the operating element itself that its magnetic field is reduced towards the outside and thus beyond the operating element, in particular in relation to the position of use. This means that the range of the magnetic field is reduced from the operating element in the stowed position relative to the position of use and / or the strength of the magnetic field is reduced in this regard.

It is preferably provided that the holding magnet rests in the use position on an underside of a housing of the operating element. This underside is facing in the attached to the control element recording state of the control element of this control element receptacle. In such an embodiment, the holding magnet is arranged to be maximally adjacent relative to this exposed side of the housing in order to keep the range of the magnetic field generated by it in the region outside of this underside of the housing as large as possible.

Preferably, the holding magnet in the stowed position is spaced from this underside of the housing of the operating element and set back in the interior of the housing. As a result, the above-mentioned advantageous reduction of the magnetic field outside of the housing, in particular outside and adjacent to the underside of the housing, is achieved.

In an advantageous embodiment, it is provided that the holding magnet of the operating element is arranged to be linearly movable in the operating element. This allows a very simple movement concept of the holding magnet and unwanted jamming or spreading during movement is avoided. In particular, it is provided that the holding magnet is arranged movably along a longitudinal axis of the operating element in the operating element. As a result, the distance to a lower side of the housing can advantageously be changed individually, and the above-mentioned advantages can be taken into account.

It is preferably provided that the operating element has a positioning device which is coupled to the holding magnet of the operating element. With the positioning of the holding magnet of the operating element in its position in the operating element is changeable. The positioning device is arranged in particular on the inside in a housing of the operating element. As a result, it is arranged protected, whereby the permanent functionality is achieved. Such an additional separate positioning device thus actively completes the movement of the holding magnet so that the desired different positions of the holding magnet in the operating element can be adjusted very precisely and reliably.

It can be provided that a housing of the control element is formed from several parts and these parts are non-destructively releasably connected to each other. By such a configuration can then also be made possible that can be reached in the interior of this housing and, for example, for assembly or replacement purposes, in particular for servicing or replacing the holding magnet and / or the positioning device, access is reached.

It is preferably provided that the holding magnet of the operating element and this positioning device are mechanically connected at a connection point, in particular directly connected to each other. As a result, the action of the positioning device on the holding magnet for its position adjustment in the interior of the operating element can be very direct and immediate. As a result, once again an immediate and rapid and accurate position adjustment of the holding magnet is achieved in the control.

In particular, it is provided that the holding magnet of the operating element has a magnetic field shielding element on the side facing the positioning device. Additionally or instead, it can be provided that the positioning device has a magnetic field shielding element on the side facing the holding magnet. These are further very advantageous embodiments, since a so-called magnetic "adhesive effect" is thereby avoided. The adhesion of the holding magnet to the positioning device and a resulting prevention of the mobility of the holding magnet is thereby avoided.

In particular, the positioning device is designed such that it is variable in length, whereby this change in length, the position adjustment of the holding magnet coupled thereto is set. Especially in such an embodiment, in which the positioning device is variable in length in itself, this above-mentioned advantageous embodiment with the at least one magnetic field shielding advantageous. Because this avoids that the positioning device remains in its maximum length shortened position when the holding magnet by its permanently acting magnetic field at this positioning device adheres in this length-shortened position and lengthen lengthen this positioning prevents.

It is preferably provided that the positioning device comprises a spring, in particular a spring, with which the holding magnet of the operating element is connected. By this spring, the holding magnet is independently positionable in a stowed position in the control. In particular, the spring is therefore designed so that it holds the holding magnet in the stowed position, especially in the relaxed state. This ensures that the holding magnet, if it does not enter into magnetic interaction, in particular with the holding magnet of the operating element holder, is withdrawn by the spring force into the interior of the housing of the operating element and is held there accordingly and lingers. Only when the holding magnet of the operating element interacts with a control element external magnetic field, in particular that of the holding magnet of the control element recording, this magnetic interaction is stronger than the restraining force of the spring, so that by this magnetic interaction then the holding magnet of the control element against the spring force of the stowage is pulled into the use position and thus moved accordingly. In this position of use, the spring is then in a prestressed state, so that then automatically withdrawn after the release of the magnetic interaction of the holding magnet of the operating element in particular with the holding magnet of the operating element recording of the holding magnet of the control element in the stowage position by the spring.

As a result, a highly functional and yet very simple and space-saving concept is realized in order to attach the holding magnet of the control element defined in its different positions inside the control element, in which case an automatism is achieved here at least for the movement of the use position in the stowed position ,

Preferably, it is provided that the holding magnet is movable by interaction with a user-external force in a use position in the control element. In particular, this is achievable by, as described above, in particular by the magnetic interaction with the holding magnet of the operating element holder.

Preferably, it is provided that the operating element on an upper side, which faces away in the attached to the control element receiving state of the control element of the control element receiving a housing of the operating element, in particular separate, magnetic field shielding. This is a further very advantageous embodiment since the magnetic field of the holding magnet of the operating element is thus influenced in a targeted manner by such a separate functional component. In particular, the range of the magnetic field outside of the operating element in the area of this upper side and / or sidewalls of the operating element in the range and / or the strength is thus also reduced. This magnetic field shielding element can be additionally applied to the housing. It may be formed as an outer end part and thus outer shell part. However, it can also be arranged inside the housing of the operating element.

It is preferably provided that this magnetic field shielding element has at least one light exit opening, through which light of a light source of the operating element can exit.

It is preferably provided that the control element receptacle also has a holding magnet, which occurs in the patch on the control element receiving state of the operating element for generating the magnetic holding force in interaction with the control element internal holding magnet. In particular, it is provided that this holding magnet of the operating element receptacle is arranged movably in the operating element receptacle. Advantageously, a mobility of this holding magnet is provided here, in which the distance to a top of the control element holder is defined variable. By such a configuration is also achieved in a further advantageousness that in the removed state of the control element and the holding magnet of the control element recording no undesirable far-reaching magnetic field beyond the top of the control element recording is generated and thus in the relevant environment. Also by the above-mentioned advantages can be supported, especially if with magnetically interactive separate components that are not the operating element in the area the control element recording are stored or a user who optionally has electronic devices as a living aid, moves with these relatively close to the control element recording zoom.

The mobility of the holding magnet of the operating element holder can be made possible by a positioning device. This positioning device may be formed purely mechanically or else electromechanically or electromagnetically or hydraulically or pneumatically.

Furthermore, the invention also relates to a household appliance, in particular for preparing food, which has an operating device according to the above-mentioned aspect or an advantageous embodiment thereof. The household appliance may in particular be a hob.

Furthermore, the invention also relates to a cooking appliance, in particular a hob, with an operating device according to the above-mentioned aspect or an advantageous embodiment thereof.

With information "top", "bottom", "front", "rear", "horizontal", "vertical", "depth direction", "width direction", "height direction" etc. are the intended use and proper arrangement of the operating device or of the cooking appliance and at a given then in front of the operating device or the cooking appliance and in the direction of the operating device or the cooking appliance views given observer positions and orientations.

Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respectively specified combination but also in other combinations or in isolation, without the frame to leave the invention. There are thus also embodiments of the invention as encompassed and disclosed, which are not explicitly shown and explained in the figures, however, emerge by separated combinations of features from the described embodiments and can be generated. Embodiments and combinations of features are also to be regarded as disclosed, which thus do not have all the features of an originally formulated independent claim.

Fig. 1

eine perspektivische Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Gargeräts;

Fig. 2

eine vereinfachte Schnittdarstellung durch ein Ausführungsbeispiel einer erfindungsgemäßen Bedienvorrichtung;

Fig. 3

die Darstellung gemäß Fig. 2 mit zu Fig. 2 unterschiedlicher Betriebssituation;

Fig. 4

eine vereinfachte Schnittdarstellung eines Bedienelements der Bedienvorrichtung mit einem Haltemagneten, der in einer Gebrauchsstellung in dem Bedienelement angeordnet ist;

Fig. 5

eine Darstellung des Bedienelements gemäß Fig. 4 mit dem Haltemagneten, der in einer Verstaustellung in dem Bedienelement angeordnet ist; und

Fig. 6

eine weitere vereinfachte Schnittdarstellung durch ein Ausführungsbeispiel eines Bedienelements der Bedienvorrichtung.

Embodiments of the invention are explained in more detail below with reference to schematic drawings. Show it:

Fig. 1

a perspective view of an embodiment of a cooking appliance according to the invention;

Fig. 2

a simplified sectional view through an embodiment of an operating device according to the invention;

Fig. 3

the representation according to Fig. 2 with to Fig. 2 different operating situation;

Fig. 4

a simplified sectional view of an operating element of the operating device with a holding magnet, which is arranged in a position of use in the operating element;

Fig. 5

a representation of the operating element according to Fig. 4 with the holding magnet, which is arranged in a stowed position in the operating element; and

Fig. 6

a further simplified sectional view through an embodiment of an operating element of the operating device.

In the figures, identical or functionally identical elements are provided with the same reference numerals.

In Fig. 1 is shown in a simplified representation of a household appliance for preparing food, which in particular a cooking appliance, preferably a cooktop 1, may be. The cooktop 1 has a cooktop plate 2, on the only in the number, position and shaping to understand cooking zones 3, 4, 5 and 6 formed are. The hob 1 also has an operating device 7, which is also to be understood in position and size only by way of example. The operating device 7 has a control element receptacle 8, which is formed here by way of example on the hob plate 2. In particular, 2 components of the control element holder 8 are also arranged below the hob plate. The operating device 7 also has an operating element 9, which is formed separately from the operating element holder 8. The control element 9 is formed here discus-shaped or puck-like. The operating element 9 is in Fig. 1 shown in the patch on the control element 8 recording state. The control element 9 is non-destructively removable detachable from the control element holder 8 and put back. In the attached state, the operating element 9 is held by magnetic holding force on the control element holder 8.

In Fig. 2 is a schematic representation of a section through an embodiment of the operating device 7 is shown, in which case the arrangement on the hob plate 2 is shown. The operating element 9 has a housing 10. In an interior 11 of the housing 10, a holding magnet 12 is arranged. The holding magnet 12 is preferably a permanent magnet. It is centrally located here and thus arranged in particular coaxially to the longitudinal axis A of the operating element 9. The longitudinal axis A also defines an axis of rotation about which the operating element 9 is rotatable relative to the mounted on the control element holder 8 state. By such rotations operating conditions of the hob 1 can be adjusted. In particular, this can be used to set a cooking level of a cooking zone 3 to 6.

The housing 10 has an underside 13, with which the operating element 9 is seated on the operating element receptacle 8. If the underside is uneven, in particular convexly curved, or is frustoconical, the operating element 9 can also be tilted in order to set operating conditions, for example, to be able to individually select the cooking zones 3 to 6. The holding magnet 12 is arranged in the interior 11 and there arranged movably defined. This means that the holding magnet 12 can move in a defined manner relative to the housing 10. It is provided here that this mobility is linear, in particular given only in the direction of the longitudinal axis A.

The holding magnet 12 is arranged in a guide 14 which is arranged in the interior 11, movable. This guide 14 preferably extends substantially over the entire distance between the bottom 13 and a top 15 of the housing 10th

The housing 10 may be formed in one piece, but may also be formed of a plurality of separate parts, so that these parts can be separated and non-destructively detachable separated and reassembled. As a result, it is also possible to get into the interior 11 of the housing 10.

The operating element 9 also has a positioning device 16, which is coupled to the holding magnet 12, in particular is mechanically directly connected. The positioning device 16 is arranged in the interior 11 and is designed here in particular as a spring. The positioning device 16 is mechanically connected directly to the holding magnet 12 at a connection point 17. At the opposite end, the spring with the housing 10 is firmly connected. The spring extends with its spring axis parallel, in particular coaxial, to the longitudinal axis A.

In particular, it is provided that the holding magnet 12 has a magnetic field shielding element 18 on the side facing the positioning device 16. As a result, the magnetic field of the holding magnet 12 is weakened in the direction of the positioning device 16 at least in such a way that a so-called magnetic adhesive effect of the holding magnet 12 is prevented at the positioning device 16, in particular when the holding magnet 12 in an in Fig. 3 shown Stowing position is located in the control element 9 and thus in particular the spring is maximally compressed and minimized length. By this avoidance of the magnetic adhesive effect, the mobility of the holding magnet 12 can be maintained in the control element 9 without restriction, in particular the mobility of the stowed out in the in Fig. 2 shown position of use.

In this mentioned position of use of the holding magnet 12, as in Fig. 2 is shown, the holding magnet 12 is directly adjacent to the bottom 13 and thus deflected or positioned maximally down. In this position of use, the magnetic field of the holding magnet 12 is formed maximally outward over the bottom 13 or the range of this magnetic field and thus also the strength of this magnetic field in the surrounding area of the bottom 13 is formed. This can be a particularly advantageous interaction with a holding magnet 19, which is part of the control element holder 8 done. This further holding magnet 19 is arranged below the hob plate 2. In Fig. 2 the state is shown in which the two holding magnets 12 and 19 interact with each other such that the magnetic holding force for holding the operating element 9 is formed on the control element holder 8. In the embodiment in Fig. 2 It is preferably provided that also the further holding magnet 19 is movable in a defined manner and thus here preferably a distance a from the underside of the hob plate 2 is variable. For this purpose, it is provided in the exemplary embodiment that the further holding magnet 19 in a guide 20 is linearly movable. In particular, a further positioning device 21 is provided, with which this further holding magnet 19 is defined in its position relative to the hob plate 2 can be changed. It can be provided that the positioning device 21 is a spring, as in Fig. 2 is shown. It can be provided that the further holding magnet 19 has a magnetic field shielding element 22 which is formed on the side facing the positioning device 21. It can thus be avoided in this further holding magnet 19 of the above-mentioned magnetic adhesive effect on the positioning device 21.

Additionally or instead, it can be provided that the positioning device 21, in particular if it is made of a magnetically interacting material, has such a magnetic field shielding element so that it is present in addition to the magnetic field shielding element 18 or is present instead of this magnetic field shielding element 18. The same can also be provided in the embodiment of the holding magnet 19 and the positioning device 21.

In a further advantageous embodiment it can be provided that the housing 10 also has a magnetic field shielding element 23, which is formed on the top and / or side walls of the housing 10. As a result, the magnetic field of the holding magnet 12 can be clearly shielded beyond the upper side and / or the side wall of the housing 10, both in the state of the operating element 9 placed on the operating element holder 8 and in the state removed therefrom. Thus, at least these housing portions of the operating element 9, which also in attached state of the control element 9 on the control element holder 8 are immaterial to the interaction with the other holding magnet 19 or on which anyway no contribution to this interaction magnetic field must be generated, permanently formed such that the magnetic field of the holding magnet 12 outside these areas anyway permanently reduced significantly is.

In Fig. 3 is in a sectional view corresponding to in Fig. 2 the state shown in which the operating element 9 is removed from the control element holder 8. It can be seen here that the holding magnet 12 is in its stowed position and in this respect to the position of use in Fig. 2 is withdrawn into the interior 11. In particular, he is in this regard clearly objected to the bottom 13 in the interior 11 positioned. The spring is shown here in the maximum compressed state. By the spring in the illustration according to Fig. 3 in the ground state, in particular in the relaxed state, is, the holding magnet 12 automatically from the use position according to Fig. 2 in the staging according to Fig. 3 withdrawn when the magnetic interaction of the holding magnet 12 is terminated with the holding magnet 19. Is based on the representation in Fig. 3 the control element 9 then placed back on the control element holder 8, the magnetic interaction between the holding magnets 12 and 19 is stronger than the restraining force of the spring, so that then automatically pulled by the magnetic interaction of the holding magnet 12 from the stowed position to the use position. The same applies to the advantageous embodiment shown here for the holding magnet 19, which is also of an in Fig. 2 shown use position in a in Fig. 3 shown stowage and vice versa can be moved.

In Fig. 3 a distance b is shown, the holding magnet 12 has from the bottom 13 in the illustrated stowed position. This distance b can be several millimeters, in particular up to one cm. Other distance values are possible.

In Fig. 4 is shown in an enlarged view, the control element 9, in which case the holding magnet 12 is shown in the position of use. It is here the extension and configuration of the magnetic field 24 of the holding magnet 12 beyond the bottom 13 addition shown. Serving for clarity, the magnetic field 24 is shown here only on one side of the longitudinal axis A, of course, this magnetic field 24 is formed outside the bottom 13 on the opposite side.

Opposite is in Fig. 5 the configuration and extent of the magnetic field 24 shown outside the bottom 13 when the holding magnet 12 is arranged in its stowed position. It can be seen that the range and thus the strength of the magnetic field 24 is significantly reduced in this stowed position beyond the bottom 13, as in the illustration according to Fig. 4 ,

In Fig. 6 the operating element 9 is shown in a further embodiment, in which the housing 10, in particular on the upper side 15 light exit openings 25 through which light from light sources 26 can emerge from the control element 9. As a result, information, for example about operating conditions, in particular the operating device 7, can be visually displayed.

The magnetic field shielding element 23 may be arranged in the interior 11, but may also be formed as an outside enveloping element. For this purpose, it can be arranged directly on an upper housing part of the housing 10, for example, be glued.

In a further embodiment, it could also be provided that the positioning device 16 is formed in otherwise interaction with the holding magnet 12 in order to adjust its position in the interior 11. For example, the holding magnet 12 could then be an electromagnet, which is energized by a corresponding positioning device 16 to change its position in this regard. The same could also be provided in the holding magnet 19 and the positioning device 21.

LIST OF REFERENCE NUMBERS

1

hob

2

Hotplate

3

cooking zone

4

cooking zone

5

cooking zone

6

cooking zone

7

operating device

8th

Operating element receptacle

9

operating element

10

casing

11

Inner

12

holding magnet

13

bottom

14

guide

15

top

16

positioning

17

junction

18

magnetic shield

19

holding magnet

20

guide

21

positioning

22

magnetic shield

23

Magnetfeldabschrimelement

24

magnetic field

25

Light exits

26

light sources

A

longitudinal axis

a

distance

b

distance

Claims (15)

Control device (7) for a household appliance (1), with a control element receptacle (8) and with a control element (9), which on the control element receptacle (8) is removably and attachable positionable, wherein the control element (9) by means of magnetic holding force on the control element recording (8) is held in the attached state, and the operating element (9) to a holding magnet (12), characterized in that the holding magnet (12) is arranged in a defined movable in the operating element (9). Operating device (7) according to claim 1, characterized in that the holding magnet (12) is positionable in a position of use and in a different stowed position in the operating element (9). Operating device (7) according to claim 2, characterized in that the holding magnet (12) in the position of use on an underside (13) which faces in the on the operating element receptacle (8) attached state of the operating element (9) of the control element receptacle (8), a housing (10) of the operating element (9) is present. Operating device (7) according to claim 2 or 3, characterized in that the holding magnet (12) in the stowed position spaced from a bottom (13) in the on the operating element receptacle (8) patch state of the operating element (9) of the control element receptacle (8). facing, a housing (10) of the operating element (9) and in the interior (11) of the housing (10) is set back. Operating device (7) according to one of the preceding claims, characterized in that the holding magnet (12) is arranged to be movable linearly, in particular along a longitudinal axis (A) of the operating element (9), in the operating element (9). Operating device (7) according to one of the preceding claims, characterized in that the operating element (9) has a positioning device (16) which is coupled to the holding magnet (12), and with which the holding magnet (12) in its position in the operating element (9) is changeable. Operating device (7) according to claim 6, characterized in that the holding magnet (12) and the positioning device (16) are mechanically connected at a connection point (17). An operating device (7) facing according to claim 6 or 7, characterized in that said holding magnet (12) on the side facing the positioning device (16) side, a Magnetfeldabschirmelement (18) and / or the positioning device (16) at the holding magnet (12) Side has a magnetic field shielding. Operating device (7) according to one of the preceding claims 6 to 8, characterized in that the positioning device (16) has a spring, with which the holding magnet (12) is connected, and with which the holding magnet (12) independently in a stowed position in the operating element (9) is positionable. Operating device (7) according to any one of the preceding claims, characterized in that the holding magnet (12) by interaction with an external control element force in a use position in the control element (9) is movable. Operating device (7) according to claim 10, characterized in that the operator-external force is a magnetic force generated by a control element external holding magnet (12), in particular for holding the operating element (9) on the control element receptacle (8) by magnetic holding force the operating element internal holding magnet (12) interacts. Operating device (7) according to any one of the preceding claims, characterized in that the operating element (9) on an upper side (23) in the mounted on the operating element receptacle (8) state of the operating element (9) Control element receptacle (8) facing away, a housing (10) of the operating element (9) has a magnetic field shielding element (15). Operating device (7) according to claim 12, characterized in that the magnetic field shielding element (15) has at least one light exit opening (25) through which light of a light source (26) of the operating element (9) can emerge. Operating device (7) according to any one of the preceding claims, characterized in that the control element receptacle (8) has a holding magnet (19) in the mounted on the control element receptacle (8) state of the operating element (9) for generating the magnetic holding force in interaction with the inside holding magnet (12) occurs, and which is movably arranged in the control element receptacle (8), in particular with respect to its distance from an upper side of the control element receptacle (8). Domestic appliance (1), in particular for preparing food, which has an operating device (7) according to one of the preceding claims.

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