EP2865949A1 - Operating device for a domestic appliance with a lower overhang on a control element base which is magnetically mounted - Google Patents

Abstract

The invention relates to an operating device (8) for a domestic appliance (1), having an operating element receptacle (9), and an operating element (10) which has an operating element base (12) and an operating element attachment (13) which can be detached non-destructively on the control element base (13). 12) is attachable and in the mounted state relative to the control element base (12) by a user and rotatable for setting operating conditions of the household appliance (1), and the control element base (12) non-destructively releasably attachable to the control element receptacle (9), wherein the Operating element base (12) on a bottom side (15) has a downwardly projecting projection (14) which is arranged in the operating element receptacle (9) arranged state in the vertical direction overlapping with a front edge (20) of the control element receptacle (9) in the control element base (12) a holding magnet (29) is arranged, which in the assembled state of the B The operating element receptacle (12) is magnetically interacting with a control element external magnetically interacting element (30) and thereby the operating element base (12) is magnetically held on the operating element receptacle (9), wherein the holding magnet (29) in the assembled state of Operating element attachment (13) with the operating element base (12) in magnetic interaction with interaction elements (32) in the operating element attachment (13) such that depending on the rotational position of the operating element attachment (13) to the operating element base (12) at least one specific rotational position is formed as a detent position ,

Description

The invention relates to an operating device for a household appliance, with a control element receptacle, and a control element, which has a control element base and an operating element attachment. The control element attachment is non-destructively releasably attachable to the control element base and rotatable in the mounted state relative to the control element base for setting operating conditions of the household appliance. The control element base is non-destructively releasably attachable to the control element receptacle, wherein the control element base has a downwardly projecting overhang on an underside. The supernatant is arranged in the arranged in the control element receiving state in the vertical direction overlapping with a front edge of the control element holder. In the control element base, a holding magnet is arranged, which is in the assembled state of the control element socket with the control element holder in magnetic interaction with a control element external magnet and thereby the control element base is magnetically held on the control element holder.

Such an embodiment of an operating device is known from the DE 10 2006 026 187 A1 known.

There, the control element attachment is designed as a ring. In one of the embodiments, this ring can also be removed non-destructively detachable from the base, wherein it is deducted in the vertical direction to the top. In this embodiment known from the prior art, the holder of the rotary ring is thus achieved almost solely by the weight on the base. A relatively slight and thus possibly undesirable changing the position of the rotary ring in the vertical direction or even a complete separation of the rotary ring from the base can therefore occur. This affects the user-friendliness in the operation and can even lead to unwanted misadjustments of operating conditions.

In addition, from the DE 10 2011 086 649 A1 an operating device for a household appliance, in which a control element is arranged on a control element receptacle, wherein the control element receptacle is located on a hob plate of the hob and rests with a projection on the front edge of the hob plate.

It is an object of the present invention to provide an operating device for a household appliance and a household appliance, in which or in which the cleaning of the operating device is improved and yet the separate parts of the operating device are kept sufficiently stable in the assembled state.

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

An operating device according to the invention for a household appliance comprises an operating element receptacle and at least one operating element. The operating element has a control element base and an operating element attachment. The control element attachment is non-destructively releasably attachable to the control element base and graspable by a user and then rotatable in the mounted state relative to the control element base for setting operating conditions of the household appliance. The control element base is non-destructively releasably attachable to the control element receptacle, wherein the control element base has a downwardly projecting overhang on an underside. The supernatant is arranged in the arranged in the control element receiving state of the control element base in the vertical direction overlapping with a front edge of the control element receptacle. In the operating element base, a holding magnet is arranged, which is in the assembled state of the operating element base with the operating element receptacle in magnetic interaction with a control element-external magnetically interacting element and thereby the operating element base is magnetically held on the operating element holder.

An essential idea of the invention is to be seen in that the holding magnet in the assembled state of the operating element attachment with the operating element base in magnetic interaction with magnetic interaction elements in the control element attachment is such that depending on the rotational position of the control element attachment to the control element base at least one specific rotational position is formed as a detent positions or a rotational position is locked by the magnetic interaction.

By such a configuration is thus achieved that the holding magnet is used multifunctional. On the one hand it ensures the non-destructively detachable mounting of the control element socket on the control element holder, on the other hand, it allows the rotatable control element attachment has at least a discrete rotational position, which then also locked by the magnetic interaction of this holding magnet with the position magnets and thus perceived haptically by a user can be. By such a configuration, it is thus possible that a very reduced component, in particular with regard to the number of magnets, a diverse separation of the operating device is simply made possible in their individual parts. As a result, the cleanability of the individual, sometimes more complex shaped components is improved, so that the permanently reliable functionality is maintained and also the wear is reduced.

An interaction element may be a position magnet or a ferromagnetic part.

In addition, it is also achieved by such a configuration that the control can be disassembled in itself easily and quickly, and on the other hand, the control can be easily and quickly removed from the control element recording. Especially in the assembled state is achieved by the magnetic interaction and a reliable mechanical support, which prevents undesired position tolerances or shifts of the individual components to each other at least so far that no undesirable operating settings occur or user-friendly handling would be present.

Just by the locking positions, which is given by the multi-functional design of the holding magnet, also a very safe and precise adjustment of Rotary positions and thus also a very precise adjustment of operating conditions of the household appliance done.

It is preferably provided that the operating element receptacle is a plate. As a result, it is very shallow and building a large-scale essay for the control element base is reached.

In particular, the plate may be a hob plate of a hob.

It is preferably provided that at least in regions an intermediate part is arranged on the underside of the control element base, which is formed from a different material to the bottom. Also, this intermediate part may preferably be formed as a plate or plate-shaped, whereby the overall height is kept relatively low. By means of such an intermediate part, a direct contact of the material of the operating element base with a particular upper side of the operating element receptacle can be avoided. This has in many ways advantages that can be explained in terms of material incompatibility between the two components, including with regard to mechanical properties.

It is preferably provided that the intermediate part is a sliding aid element. Such a configuration improves the positioning of the operating element base on the operating element receptacle or the decrease thereof. This is due to the fact that due to the magnetic interaction of the magnets also an optionally very fast by the force of attraction positioning of the two elements to each other and in this respect at least a certain minimum displacement then occurs in the desired end position, but the two components already mechanically contacted to each other issue. By such a sliding aid element, this shipment is then favored in the positional end position.

In addition, the intermediate part may additionally or instead also be designed as a scratch protection element. Just when the two components are mechanically connected to each other and also an optionally very small relative movement takes place to each other, scratching or other damage prevented by at least one of the two components. As a result, the low wear and tear and high quality impression persist.

In particular, it is provided that the intermediate part is made of plastic. For such an embodiment, it can be provided on the one hand very minimal weight, on the other hand, the non-metallic character does not affect the interaction between the magnets.

It is preferably provided that an intermediate part is at least partially disposed on a projection underside of the control element base, which is formed from a different material to the bottom. Also in this embodiment, the above-mentioned advantages are achieved if there is a configuration in which this projection on the control element base with its supernatant underside rests on another object or contacted them. Again, this further intermediate part may be formed on the supernatant base as a sliding and / or scratch protection element and preferably be formed of plastic. Preferably, the intermediate parts are formed on the supernatant base and on the underside of the control element base made of a same material and / or with the same thickness.

It is preferably provided that the supernatant rests against the operating element base with a side edge directly on the front edge. As a result, a stop is virtually formed, so that undesired slippage in at least one corresponding spatial direction is prevented.

In an alternative embodiment, it is provided that, in the assembled state of the operating element base with the operating element receptacle, the projection bears against a side edge on the operating element base on a front side of a front strip arranged on the operating element receptacle. By such an additional front panel, the control element receiving the front side is virtually protected, so that it is protected against direct mechanical effects and thus unwanted damage or the like. In addition, the mechanically stable positioning of the control element base is also improved by such an additional front panel. Especially through the above-mentioned specific concern the side edge of the supernatant on the front of the front panel a corresponding holder is achieved here.

Preferably, it is provided that the underside of the control element receptacle adjacent to the projection has a recess into which the front strip engages in the assembled state, in particular extends therethrough. This is a particularly advantageous embodiment, as this quasi a groove is formed on the bottom, in which the front bar engages with their top engaging quasi in a certain sense, so that here too the positional security of the control element base is favored again. Due to the complete passage of the front strip through this depression, an anti-rotation of the operating element base around a vertical axis, which is directed perpendicular to the orientation of the front strip, is additionally prevented. The front panel thus serves as a sort of barrier bar and anti-rotation device for the control element base.

In an advantageous embodiment, it is provided that the interaction elements are formed in the control element attachment at least at the ends of a cushion.

The control element attachment is preferably designed as a flat cylinder or diskusförmig. In particular, it is provided that the control element base has on its upper side a survey, which is designed in particular cylindrical. This survey engages in a complementarily formed depression on a lower side of the operating element attachment, whereby here too a mechanical coupling is provided, in which the operating element attachment is provided in a horizontal plane in addition to the magnetic support provided between the operating element attachment and the operating element base by corresponding magnets. is held.

Furthermore, the invention also relates to a household appliance, in particular a hob, with an operating device according to the invention or an advantageous embodiment thereof.

In particular, the control element is designed so that latchable rotational positions each represent a cooking level. In particular, the design is such that regardless of a relative position of the operating element attachment to a control element socket each associated with the beginning of a rotation of the control element attachment a first cooking level and with a further rotation of each rotational position which is locked represents an increase or decrease of the cooking level. It is therefore recognized in this embodiment, the relative position of the control element attachment to the control element socket.

Preferably, the operating device has as many individual operating elements as cooking zones are formed, so that each cooking zone is assigned its own operating element for setting.

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 feature combinations 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 alone, without the frame to leave the invention. Thus, embodiments of the invention are to be regarded as encompassed and disclosed, which are not explicitly shown and explained in the figures, however, emerge and can be produced by separated combinations of features from the embodiments explained.

Fig. 1

eine perspektivische Darstellung eines Ausführungsbeispiels eines erfindungsgemäßen Haushaltsgeräts;

Fig. 2

eine vergrößerte Darstellung eines Teilausschnitts eines Ausführungsbeispiels einer erfindungsgemäßen Bedienvorrichtung, wie sie im Haushaltsgerät gemäß Fig. 1 verbaut ist;

Fig. 3

eine Explosionsdarstellung der Bedienvorrichtung gemäß Fig. 2;

Fig. 4

eine perspektivische Ansicht von unten auf einen Bedienelementsockel, wie er in der Bedienvorrichtung gemäß Fig. 2 und Fig. 3 ausgebildet ist;

Fig. 5

eine Explosionsdarstellung des Bedienelementsockels gemäß Fig. 4;

Fig. 6

eine weitere Ansicht von unten auf den Bedienelementsockel gemäß Fig. 4 und Fig. 5;

Fig. 7

eine Schnittdarstellung durch die Ausgestaltung gemäß Fig. 2;

Fig. 8

eine Explosionsdarstellung eines Ausführungsbeispiels eines Bedienelementaufsatzes, wie er in der Bedienvorrichtung gemäß Fig. 2, 3 und 7 ausgebildet ist;

Fig. 9

eine perspektivische Darstellung eines weiteren Ausführungsbeispiels einer erfindungsgemäßen Bedienvorrichtung;

Fig. 10

eine Schnittdarstellung der Ausgestaltung in Fig. 9;

Fig. 11

eine vergrößerte Darstellung eines Teilausschnitts der Ausführung in Fig. 10; und

Fig. 12

eine perspektivische Ansicht von unten auf einen Bedienelementsockel, wie er in der Ausführung gemäß Fig. 9 bis Fig. 11 angeordnet ist.

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 household appliance according to the invention;

Fig. 2

an enlarged view of a partial section of an embodiment of an operating device according to the invention, as in the household appliance according to Fig. 1 is installed;

Fig. 3

an exploded view of the operating device according to Fig. 2 ;

Fig. 4

a perspective view from below of a control element base, as in the operating device according to Fig. 2 and Fig. 3 is trained;

Fig. 5

an exploded view of the control element socket according to Fig. 4 ;

Fig. 6

another view from below on the control panel according to 4 and FIG. 5 ;

Fig. 7

a sectional view through the embodiment according to Fig. 2 ;

Fig. 8

an exploded view of an embodiment of an operating element attachment, as in the operating device according to Fig. 2, 3rd and 7 is trained;

Fig. 9

a perspective view of another embodiment of an operating device according to the invention;

Fig. 10

a sectional view of the embodiment in Fig. 9 ;

Fig. 11

an enlarged view of a partial section of the embodiment in Fig. 10 ; and

Fig. 12

a bottom perspective view of a control element base, as in the embodiment according to Fig. 9 to Fig. 11 is arranged.

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

In Fig. 1 is shown in a schematic and perspective view of an embodiment of a household appliance, which is designed as a hob 1. The hob 1 comprises a hob plate 2, which may be formed for example of glass or glass ceramic. On an upper side 3 of the cooktop panel 2 cooking zones 4, 5, 6 and 7 are formed in position and number only by way of example, on which preparation vessels for preparing food can be placed.

The hob 1 further comprises an operating device 8, which has a control element receptacle 9 and an operating element 10. The operating element 10 is formed in the embodiment of several separate components, wherein by operating the operating element 10 by a user operating conditions of the hob 1 can be adjusted. In this context, for example, a selection of a cooking zone 4 to 7 and a setting of a cooking level of a then selected cooking zone 4 to 7 can be done.

In this context, this specific selection and setting is then detected by a control unit, not shown, and then controlled and operated according to a cooking zone 4 to 7 under the hob plate 2 locally associated heater.

It is preferably provided that the operating device 8 has as many separate operating elements 10 as separate cooking zones 4 to 7 are formed. With each control element 10, the associated cooking zone 4 to 7 is then set in the cooking stage by turning the control element attachment. In particular, by relative position detection of the control element attachment to the control element base, the cooking level is then set. This means that, regardless of the starting position of the control element attachment to the control element base at the beginning of the rotation is always the beginning of Kochstufenzählung done.

In Fig. 2 is an embodiment of partial components of the operating device 8 is shown in a perspective view. In this embodiment, the control element holder 9 is integrated into the hob plate 2, or in particular the hob plate 2 and the control element holder 9 is. For this purpose, the cooktop panel 2 comprises a support area 11, on which the control element 10 is seated.

The operating element 10 comprises an operating element base 12 and an operating element attachment 13. The operating element base 12 and the operating element attachment 13 are non-destructively detachable and thus reversibly separable and then formed together again. The control element attachment 13 is designed as a flat cylinder in the context. The control element attachment 13 is connected to the operating element base 12 via magnetic holding forces, on the other hand also the Operating element base 12 is held by magnetic holding forces on the hob plate 2.

The control element base 12 further comprises a projection 14, which extends in the vertical direction and thus in the y-direction over a bottom 15 of the control element base 12 down and represents a circular arc segment.

In Fig. 3 an exploded view of the operating element 10 is shown. It can be seen that on a top 16 of the control element base 12, a cylindrical elevation 17 is formed.

On a lower side 18 of the control element attachment 13, a recess designed to be complementary thereto is formed, into which then the elevation 17 in the assembled state as shown in FIG Fig. 2 extends into it.

The control element attachment 13 is rotatable relative to the control element base 12 and thus also to the cooktop plate 2 about an axis A which extends in the y-direction, wherein an associated operating condition adjustment takes place depending on specific rotational positions.

As in the illustrations according to Fig. 2 and Fig. 3 can be seen, the supernatant 14 with a side edge 19 at a front edge 20 of the control element holder 9 and in the embodiment according to Fig. 2 and Fig. 3 on the corresponding front edge of the hob plate 2 fitting.

In Fig. 4 a perspective view of the control element base 12 is shown. The arc segment-shaped configuration of the supernatant 14 can be seen.

In that portion of the control element base 12, in which the projection 14 is not formed, two through holes 21 and 22 are formed, which are optically transparent. It can also be provided that the holes 21 and 22 are filled with a light-transmitting material, in which case in particular the light transmission for infrared light and / or light is provided in visible to the human spectral range.

For operating condition adjustment of the hob 1, as already mentioned, the control element attachment 13 is rotated about the axis A. In order to be able to recognize the specific rotational position of this operating element attachment 13, the operating device 8 also comprises an evaluation unit. This can be designed, for example, working on an optical basis. For this purpose, corresponding light is then transmitted and received and passes through these openings or holes 21 and 22, so that it can be detected accordingly.

In addition to an embodiment on an optical basis, the rotational position detection can also be realized via magnetic, inductive or capacitive sensors.

In the illustration according to Fig. 4 It can also be seen that on the underside 15, an intermediate part 23 is formed, which is designed as a sliding and / or scratch protection element. It is formed in particular from a different to the control element base 12 material, preferably made of plastic.

In addition, as shown in Fig. 5 showing an exploded view of the control element base 12 according to FIG Fig. 4 indicates that corresponding inserts 24 and 25, which, as already mentioned above, are translucent, are provided. Thereby, the entry of dirt or liquids in the openings 21 and 22 and thus also in the area below the control element base 12 can be prevented.

In addition, as shown in Fig. 5 further openings 26 and 27 are provided, which are provided for the attachment of magnets. In the centrally central hole 27, through which also the axis A extends, a holding element internal frame holding magnet is arranged, by means of which a magnetic interaction of this operating element internal retainer holding magnet 28 (FIGS. Fig. 7 ) and a magnetically interacting element in the control element attachment 13 is achieved. As a result, then the control element attachment 13 is magnetically held on the control element base 12.

In the opening 26 is a holding magnet 29 ( Fig. 7 ) arranged. This eccentrically arranged holding magnet 29 magnetically interacts with a control element-external magnetically interacting element, in particular a counter-magnet 30 (FIG. Fig. 7 ), so that the control element base 12 is magnetically held on the control element holder 9. The control element-external, magnetically interacting element can also be a ferromagnetic part.

In Fig. 6 For this purpose, again a view from below of the control element base 12 is shown.

In Fig. 7 is also a sectional view of the execution in Fig. 2 shown along the section line VII-VII. As can be seen, a padding 31 is arranged in the operating element attachment 13, as it is then closer in the exploded view according to FIG Fig. 8 , which shows an exploded view of the control element attachment 13, is formed.

The cushion 31 comprises at least at its ends respective interaction elements 32 for magnetic interaction, of which only a few, for clarity, are provided with the corresponding reference numerals. These interaction elements 32 come into magnetic interaction with the holding magnet 29, so that specific rotational positions of the operating element attachment 13 are latched and thereby corresponding latching positions are formed. For example, in particular set cooking stages can be perceived by the haptic perceptible locking positions when rotating the control element attachment 13 about the axis A and precisely adjusted.

The control element attachment 13 comprises a cap 33 and a bottom 34.

In Fig. 9 a further embodiment of an operating device 8 is shown in a perspective partial view.

In contrast to the embodiment according to Fig. 2 to 7 is provided here that an additional, designed as a separate component front strip 35 is provided. This is arranged adjacent to the front edge 20 of the hob plate 2. The front panel 35 is according to the sectional view in Fig. 10 formed higher in the vertical direction and thus in the y-direction, as the top 3 of the hob plate 2 is at its height level.

For this purpose, a depression 36 is then configured on the underside 15 of the operating element base 12, into which the front strip 35 extends. The front panel 35 is shown in FIG Fig. 10 Also designed so that it engages under the hob plate 2 and thus is also partially formed below the hob plate 2 and extends accordingly.

As can also be seen, the front strip 35 bears against a side edge 37 on the front edge 20 of the hob plate 2. In contrast, then the supernatant 14 with its side edge 19 on one of the hob plate 2 facing away from the side edge of the front panel 35 at.

In Fig. 11 is an enlarged view of Fig. 10 shown in a partial section with the front panel 35.

As can be seen, the intermediate part 23 extends to the recess 36.

In addition, a further intermediate part 38 is arranged on a protrusion lower side 39 of the supernatant 14, but moreover extends at least in places on the side wall 19 of the supernatant 14.

LIST OF REFERENCE NUMBERS

1

hob

2

Hotplate

3

top

4

cooking zone

5

cooking zone

6

cooking zone

7

cooking zone

8th

operating device

9

Operating element receptacle

10

operating element

11

support area

12

Operating element base

13

Operating element essay

14

Got over

15

bottom

16

top

17

survey

18

bottom

19

margin

20

front edge

21

hole

22

hole

23

intermediate part

24

commitment

25

commitment

26

opening

27

opening

28

holding magnet

29

holding magnet

30

counter magnet

31

upholster

32

Interaction element

33

cap

34

ground

35

front bar

36

deepening

37

margin

38

intermediate part

39

Supernatant bottom

A

axis

Claims (11)

Control device (8) for a household appliance (1), with a control element receptacle (9), and an operating element (10) which has a control element base (12) and an operating element attachment (13) which can be attached to the control element base (12) so as to be non-destructively detachable and in the mounted state relative to the operating element base (12) by a user graspable and for setting operating conditions of the household appliance (1) is rotatable, and the operating element base (12) non-destructively releasably attachable to the control element receptacle (9), wherein the control element base (12) on a lower side (15) has a downwardly projecting projection (14) which is arranged in the operating element receptacle (9) state in the vertical direction overlapping with a front edge (20) of the control element receptacle (9), wherein in the control element base (12 ) A holding magnet (29) is arranged, which in the assembled state of the operating element base (12) with the control element receptacle (9) is magnetically interacting with a control element-externally magnetically interacting element (30) and thereby the control element socket (12) is magnetically held on the control element receptacle (9), characterized in that the holding magnet (29) in the assembled state of the control element attachment (29) 13) with the control element base (12) in magnetic interaction with interaction elements (32) in the control element attachment (13) is such that depending on the rotational position of the control element attachment (13) to the control element base (12) at least one rotational position is formed as a detent position. Operating device (8) according to claim 1, characterized in that the operating element receptacle (12) is a plate. Operating device (8) according to claim 1 or 2, characterized indicates that at least partially an intermediate part (23) is arranged on the underside (15) of the control element base (12), which is formed from a different material to the bottom (15). Operating device (8) according to claim 3, characterized in that the intermediate part (23) is a sliding and / or scratch protection element. Operating device (8) according to claim 3 or 4, characterized in that the intermediate part is formed from plastic. Operating device (8) according to any one of the preceding claims, characterized in that on an overhang underside (39) of the control element base (12) at least partially an intermediate part (38) is arranged, which is formed from a supernatant to the underside (39) different material. Operating device (8) according to one of the preceding claims, characterized in that the projection (14) with a side edge (19) directly against the front edge (20). Operating device (8) according to one of the preceding claims 1 to 6, characterized in that in the assembled state of the operating element base (12) with the operating element receptacle (9), the projection (14) with a side edge (19) on a front side of the operating element receiving ( 9) arranged front strip (35) is present. Operating device (8) according to claim 8, characterized in that the underside (15) of the control element receptacle (9) adjacent to the projection (14) has a recess (36) into which the front strip (35) engages in the assembled state, in particular extends. Operating device (8) according to one of the preceding claims, characterized in that the interaction elements (32) at the ends of a cushion (31) are formed. Domestic appliance, in particular hob (1), with an operating device (8) according to one of the preceding claims.

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