EP3807575B1 - Operating device with a portable operating element having a rotation detection part movably arranged on an operating part - Google Patents

Description

The invention relates to an operating device for a cooking appliance with a control element holder and a portable control element. The portable control element is designed for non-destructive placement and removal on a control element holder of the control device. When placed on the control element holder, the control element can be actuated to set the operating conditions of the cooking appliance. The control element has a base unit. The control element also has a control panel that is separate from the base unit and is placed on the base unit when connected to the base unit. The operating part represents an external part of the operating element, which can be rotated about an axis of rotation of the operating element in order to set at least one operating condition. Furthermore, the invention also relates to a cooking appliance with such an operating device.

Disc-shaped or disc-shaped, portable controls, which can be reversibly placed on a control element receptacle of an operating device and removed again, are well known from the prior art. Such operating devices are common, for example, on hobs. In this context, for example, the DE 10 2013 212 814 A1 and the DE 10 2013 217 268 A1 to get expelled. In these embodiments it is provided that wireless communication, in particular, between the control element and other components of the operating device is only possible when this portable control element is in place. In this attached state, operating conditions are set by rotating the control panel relative to the base unit, for example an operating parameter such as a cooking level or a time period or the like is set.

From the EP 3 190 341 A1 A cooking appliance is known which has an operating device with an operating element. The operating element is designed as a removable part. The operating element has a handling part which is an external part. In This handling part of the control element is an integrated sub-element that stands downwards.

The generic one DE 10 2010 040 675 A1 shows an operating device with a control element that can be held and moved relative to the control surface by means of magnetic force. The control element can be rotated and tilted about an axis of rotation. It is the object of the present invention to create a portable control element as well as an operating device and a cooking appliance in which the functionality with regard to the actuation options of the control element on the one hand and user-friendly handling of the control element on the other hand is improved .

This object is achieved by an operating device for a cooking appliance according to claim 1.

One aspect of the invention relates to an operating device for a cooking appliance, with a control element receptacle and a portable control element as described below or an advantageous embodiment thereof. The portable control element can be placed on the control element holder and removed in a non-destructive manner.

A portable control element for an operating device for a cooking appliance is described below. The control element has a base unit and a separate control panel. The operating part represents an external part of the operating element, wherein the operating element can be rotated about an axis of rotation of the operating element for setting at least one operating condition when the operating element is placed on a operating element receptacle of an operating device. The control element is designed to be placed on and removed from this control element receptacle of the operating device in a non-destructively detachable manner. When placed on this control element receptacle, the control element can be actuated to set the operating conditions of the cooking appliance. To set at least one operating condition, the control element can be rotated about an axis of rotation. The control element has a further component that is separate from the control part and the base unit, namely a rotation detection part. With this rotation detection part there is a rotation position of the control element can be detected relative to the control element receptacle when the control element is placed on the control element receptacle, the detection taking place in interaction of the rotation detection part with a detection unit of the operating device. The rotation detection part is designed relative to a detection underside of the operating element in the state of the operating element placed on the operating element receptacle in interaction with a detection unit of the operating device in addition to detecting a tilt position of the operating element, in which the operating element is tilted relative to the operating element receptacle. When viewed in the direction of the axis of rotation, the rotation detection part is arranged to protrude downwards from the control panel. This is particularly the case when the control panel is in an untilted basic position. The rotation detection part is movably mounted on the control part relative to the control part when viewed in the direction of the axis of rotation. Such a design creates a portable control element which is designed to be flexible and comprehensive in terms of the actuation options. The control element, in particular viewed as a whole, can therefore not only be used in different rotational positions in order to select or set operating conditions depending on a rotational position relative to a control element receptacle, but can also select or set a further operating condition by means of a different type of actuation, namely tilting . These improvements can be achieved by constructing the control element with several separate components that are individually connected and coupled to one another. On the one hand, this design of the individual components and their operative connection as well as their position relative to one another also enables simple and user-intuitive actuation, and on the other hand, it enables the individual types of actuation to be carried out very precisely. This in turn results in that these diverse actuation options can also be carried out safely and precisely, so that the resulting associated settings and/or a selection of operating conditions can in turn be recognized very precisely and can be carried out accordingly.

Regardless, the portable control element is still very compact.

The control element is designed in such a way that operating conditions of the cooking appliance are only possible when the control element is placed on the control element receptacle and then actuated.

It is preferably provided that an underside of the rotation detection part is arranged further down than the detection underside of the operating part when viewed in the direction of the rotation axis.

In particular, it is provided that the detection underside is designed for detecting the tilt position in interaction with the detection unit, whereas the rotation detection part is designed for detecting the rotational position of the control element relative to the control element receptacle in the state placed thereon in interaction with the detection unit. By designing the relevant different heights of the detection underside of the operating part on the one hand and the underside of the rotation detection part on the other hand, this can also be done very precisely and respective types of actuation can be precisely differentiated from one another.

Precisely due to the axial mounting of the rotation detection part in the control part or on the control part, which is provided axially relative to the control part, it is now particularly possible to carry out tilting positions of the control part relative to the base unit. These tilt positions, which represent inclinations of the control element relative to the axis of rotation, result in the detection underside of the control element then approaching the base unit in this tilted position caused and, when placed on the control element receptacle, then also approach a detection unit in the control element receptacle. In order not to have the rotation detection part in the way in this context, this tilting movement is made possible by this axially movable mounting of the rotation detection part. During such a tilting movement, the axially resiliently mounted rotation detection part then dips into the control part, which precisely enables the tilting movement of the control part relative to the base unit at the azimuthal position of the rotation detection part. Due to the counterforce then generated, which is generated on the underside of the rotation detection part, which then rests on the control element holder, the control panel can then tilt relative to the rotation detection part and the rotation detection part can dip inversely into the control panel.

It is preferably provided that only the rotational position of the control element relative to the control element receptacle and thus to the detection unit, which is arranged in the control element receptacle, can be detected by the rotation detection part. In this context, the underside of the rotation detection part in particular is a corresponding detection side in order to be able to determine the rotation position in interaction with the detection unit.

Preferably, the rotation detection part is designed to be electrically conductive at least in some areas on its underside. This means that the rotational position can be detected, particularly through capacitive interaction.

It is envisaged that the detection underside of the operating part is designed to be electrically conductive at least in some areas. This allows the capacitive detection underside to be created, so that a tilt position can be detected based on a capacitive detection method.

The rotation detection part is resiliently mounted in the control element, so that a movement path viewed in the direction of the rotation axis can be set between the control part and the rotation detection part. The resilient mounting is designed in such a way that the rotation detection part can be automatically brought into the basic position by a corresponding reset device, which results in the resilient mounting. The basic position in this context is the maximum position of the rotation detection part that is shifted outwards and thus downwards relative to the underside of the operating part, in particular relative to the detection underside of the operating part. Such a resilient storage or resetting device can be implemented in a variety of ways. An explicit mechanical spring element or several such mechanical spring elements can be provided here. However, a resilient mounting based on a reset device can also be provided by magnetic elements. In this context, several magnets can be arranged on the one hand in the control part and on the other hand in the rotation detection part, with their two identical poles facing each other. This allows a magnetically repelling effect to be achieved, which has the effect of virtually automatically moving the rotation detection part to the basic state and thus to the state that is maximally pushed out of the control panel. If the control panel is tilted about the axis of rotation and thus tilted relative to the base unit, a counterforce is brought about against this spring force and thus this spring effect, whether it is generated by a mechanical spring element or by magnets, which presses the rotation detection part into the control panel, with Returning the tilted control panel to the non-tilted position, for example by releasing the control panel, the rotation detection part is automatically pushed downwards out of the control panel due to this spring effect and the control panel is thereby transferred to the non-tilted basic position in the opposite inverse effect.

It is preferably provided that the resilient mounting is formed by at least one mechanical spring element, with which the rotation detection part is automatically pressed into the axial basic position.

In a further alternative, as already mentioned above, the resilient mounting and thus the restoring device can be formed by at least one pair of magnets. These magnets of the pair of magnets face each other with their same poles, with at least one magnet in the rotation detection part and at least one further magnet in the control element being arranged externally to the rotation detection part. Here too, the rotation detection part can then be automatically pressed into the axial basic position by the pair of magnets.

In an advantageous embodiment it is provided that the rotation detection part is designed only as a partial segment in the direction of rotation around the axis of rotation, in particular as a ring segment or ring section. In this context, the rotation detection part is preferably designed as a banana-shaped ring segment when viewed in the direction of rotation and the axis of rotation. With regard to its geometric design, it can be constructed as a cuboid block, which in particular has such a curved, in particular banana-shaped, design in this regard.

Preferably, the rotation detection part is arranged in a receptacle in the control part that is open downwards when viewed in the axial direction of the axis of rotation and is axial movably mounted. In particular, the detection underside of the control panel has this receptacle that is open at the bottom. Viewed in the radial direction and thus perpendicular to the axis of rotation, the rotation detection part is preferably designed and arranged within the radial dimensions of the detection underside.

Preferably, the rotation detection part extends by an azimuthal angle between 20° and 90° in the direction of rotation relative to the axis of rotation. However, deviating azimuthal length dimensions of the rotation detection part can also be designed.

In an alternative embodiment, it can be provided that the rotation detection part has a base ring on which a rotation detection finger protruding in the ring plane is arranged, this rotation detection finger being curved like a claw. This means that the rotation detection finger has a part that extends in the plane of the base ring and has a part that is curved out of the plane in this regard. This rotation detection finger is arranged with the part protruding from this plane projecting downwards relative to the detection underside.

In such a configuration it is preferably provided that the base ring is arranged to be movably mounted between the control part and the base unit. It can preferably be provided that one or more mechanical spring elements or one or more magnets are arranged in this base ring, which then represent the corresponding restoring device and thus the resilient mounting. In an embodiment with magnets, counter magnets can advantageously be arranged in the control panel. Here too, the magnets in the separate components mentioned are arranged so that their same poles face each other and thus repel each other.

It is preferably provided that the rotation detection part is coupled to the control part in a rotationally fixed manner about the axis of rotation of the control element. A relative movement in the azimuthal direction about the axis of rotation between the rotation detection part and the control part is therefore not provided.

In an advantageous embodiment it is provided that the control panel and the base unit are detachably connected to one another in a non-destructive manner. Such a coupling device can preferably be implemented using holding magnets. In this context, a holding magnet can be arranged in the control panel and another holding magnet interacting with it in the base unit.

Furthermore, it is preferably provided that the portable operating element has a further holding magnet. With this yet further holding magnet, the entire operating element, in particular via the base unit, can be arranged on the operating element holder of the operating device in a non-destructive manner. In particular, this yet further holding magnet of the operating element then comes into magnetic interaction with a holding magnet external to the operating element, which is arranged in the operating element holder.

In an advantageous embodiment it is provided that the control panel and the base unit are connected to one another in a rotationally fixed manner in the direction of rotation about the axis of rotation in the connected state. Such a rotary motion coupling can be implemented by a coupling device. The coupling device can be detachable in a non-destructive manner, so that this rotary motion coupling can be reversibly generated and released.

In this context, it can be provided that such a coupling device has at least one coupling element, for example in the form of a coupling pin, which is immersed in a counter-coupling element, which can then in particular be a coupling receptacle, such as a hole, in particular a blind hole. Preferably, at least two such pin-hole pairs are designed as a coupling element-counter-coupling element pairing.

In this context, the pin axis and the hole axis are preferably oriented parallel to the axis of rotation of the operating element.

It is advantageously provided that the base unit has a conical or frusto-conical region. The top side is therefore at least partially conical or truncated. Such a specification enables an uneven design of a top side a better mechanical coupling and thus an improved placement of the control panel on the base unit. On the one hand, this allows the tilting movement of the operating part relative to the base unit to be simple and precise, and on the other hand, a relative movement of the operating part in a plane perpendicular to the axis of rotation relative to the base unit is avoided.

The control panel preferably has a frusto-conical coupling area on an underside facing the base unit. The geometry of this is therefore preferably designed to be complementary to the uneven shape of the top side of the base unit. When connected, the unevenly shaped coupling area dips into the unevenly shaped area of the base unit.

It is preferably provided that the detection underside is the underside of a ring area of the control panel. This ring area is preferably located radially on the outside and is therefore preferably a radial end area of the operating part. In an advantageous embodiment, the detection underside thus represents an annular surface. This annular area is preferably designed in such a way that it surrounds the advantageously present frustoconical coupling area. In an advantageous embodiment, this ring area covers the base unit laterally and axially when the control panel is placed on the base unit. The detection underside is preferably arranged exposed downwards when viewed in the direction of the axis of rotation.

In a further advantageous embodiment it is provided that the portable control element is designed for capacitive detection of the rotational position and for capacitive detection of the tilt position. Preferably, the operating part is made of an electrically conductive material on its outside, at least in some areas, so that the capacitive interaction occurs when a finger touches it.

Preferably, an underside of the rotation detection part and the detection underside of the control part, viewed in the direction perpendicular to the axis of rotation, are arranged to overlap at least in some areas. This means that when viewing the projection in a plane perpendicular to the axis of rotation, the underside and the detection underside "overlap".

In particular, the underside of the rotation detection part facing the control element receptacle is arranged at a distance from the top of the control element receptacle when the control element is arranged in its non-tilted basic position. A small or minimal distance can be provided for this. In particular, this distance when the control element is not tilted is smaller than a distance from the detection underside of the control element to the top of the control element receptacle.

It can also be provided that the underside of the rotation detection part sits directly on the top of the control element receptacle when the control element is in the tilted state. In order to avoid undesirable scratching or scraping during a rotational movement of the control element and thus during a rotational movement of the rotation detection part relative to the control element receptacle, a corresponding protective element can be arranged on the underside. This protective element can be a sliding material that is applied as a coating or other physical component.

Due to the capacitive interaction, when the control element rotates, the rotation detection part that is coupled to it in a rotationally fixed manner also rotates and the rotation position is capacitively detected in interaction with the detection unit in the control element receptacle. If the control panel is tilted, the distance between the detection underside and the control element receptacle changes at the tilt position and thus also the distance to the detection unit in the control element receptacle. In this regard, the distance becomes smaller. This also allows the tilt position and the location of the tilt position to be capacitively detected.

A further aspect of the invention also relates to a cooking appliance with such an operating device according to the above-mentioned aspect or an advantageous embodiment thereof. The cooking appliance can be implemented in a variety of designs. For example, the cooking device can be a hob. In such a configuration, the control element can be placed on the control element receptacle from above and the axis of rotation is preferably vertically oriented. If the cooking appliance is designed differently, for example as an oven or as a steam cooker or as a microwave cooker, the portable control element can be on a front side, which is called Control panel can be designed, can be attached. The axis of rotation can then, for example, be oriented horizontally or be oriented obliquely.

The information "top", "bottom", "front", "rear", "horizontal", "vertical", "depth direction", "width direction", "height direction" etc. are those when the operating device or the operating device is used and arranged as intended Positions and orientations given for the device are given.

Further features of the invention emerge from the claims, the figures and the description of the figures.

Fig. 1

eine perspektivische Darstellung eines Ausführungsbeispiels eines Gargeräts;

Fig. 2

eine perspektivische Darstellung, in welcher das tragbare Bedienelement in einer ungekippten Stellung des Bedienteils der Bedienelementaufnahme aufgesetzt ist;

Fig. 3

eine Darstellung gemäß Fig. 2 in welcher ein gekippter Zustand des Bedienteils gezeigt ist;

Fig. 4

eine perspektivische Darstellung eines Ausführungsbeispiels eines tragbaren Bedienelements;

Fig. 5

eine perspektivische Schnittdarstellung durch das Ausführungsbeispiel gemäß Fig. 4;

Fig. 6

eine weitere perspektivische Darstellung des tragbaren Bedienelements gemäß Fig. 4 und Fig. 5 mit Betrachtung auf eine Unterseite;

Fig. 7

eine Schnittdarstellung durch das Bedienelement gemäß Fig. 4 bis Fig. 6 im ungekippten Zustand des Bedienteils;

Fig. 8

eine Schnittdarstellung gemäß Fig. 7, wobei im Unterschied zu Fig. 7 das Bedienteil in einem gekippten Zustand gezeigt ist;

Fig. 9

eine teilweise Explosionsdarstellung eines weiteren Ausführungsbeispiels eines tragbaren Bedienelements;

Fig. 10

eine vollständige Explosionsdarstellung des Bedienelements gemäß Fig. 9;

Fig. 11

eine Darstellung eines Bedienteils des tragbaren Bedienelements gemäß Fig. 9 und Fig. 10;

Fig. 12

eine Schnittdarstellung durch das tragbare Bedienelement gemäß Fig. 9 bis Fig. 11, in welchem das Bedienteil in einem ungekippten Zustand dargestellt ist; und

Fig. 13

eine Schnittdarstellung des Bedienelements gemäß Fig. 12 mit einem im Unterschied dazu gekippten Bedienteil.

Exemplary embodiments of the invention are explained in more detail below using schematic drawings. Show it:

Fig. 1

a perspective view of an exemplary embodiment of a cooking appliance;

Fig. 2

a perspective view in which the portable control element is placed in an untilted position of the control part of the control element receptacle;

Fig. 3

a representation according to Fig. 2 in which a tilted state of the control panel is shown;

Fig. 4

a perspective view of an exemplary embodiment of a portable control element;

Fig. 5

a perspective sectional view through the exemplary embodiment according to Fig. 4 ;

Fig. 6

another perspective view of the portable control element according to Fig. 4 and Fig. 5 with viewing on a bottom;

Fig. 7

a sectional view through the control element according to Fig. 4 to Fig. 6 when the control panel is not tilted;

Fig. 8

a sectional view according to Fig. 7 , where in contrast to Fig. 7 the control panel is shown in a tilted state;

Fig. 9

a partially exploded view of a further embodiment of a portable control element;

Fig. 10

a complete exploded view of the control element according to Fig. 9 ;

Fig. 11

a representation of a control part of the portable control element according to Fig. 9 and Fig. 10 ;

Fig. 12

a sectional view through the portable control element according to Fig. 9 to Fig. 11 , in which the control panel is shown in an untilted state; and

Fig. 13

a sectional view of the control element according to Fig. 12 with a control panel that is tilted in contrast.

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

In Fig. 1 a simplified representation of a cooking appliance is shown, which here is a hob 1. However, the cooking device can also be an oven or a steamer or a microwave oven. The hob 1 has a hob plate 2, on which the position, number and geometric design are only to be understood as an example Cooking zones 3, 4, 5 and 6 are shown. The hob 1 also has an operating device 7. The operating device 7 has a control element receptacle 8 and a separate portable control element 9. The control element 9 is designed here like a flat cylinder or disc like a disc. It can be detached non-destructively and removed from the control element holder 8 and placed again. When the control element 9 is placed on the control element holder 8, operating conditions of the hob 1 can be set. For example, a cooking zone 3 to 6 can be selected here and/or a heat level of a selected cooking zone 3 to 6 can be set.

The control element 9, which is designed in particular as a flat cylinder, can be rotated about the axis of rotation A in order to set the operating conditions of the cooking appliance 1. It can also be tilted relative to the axis of rotation A in order to set further operating conditions of the cooking appliance 1. For example, one of the cooking zones 3 to 6 can be selected by a tilting movement, and a cooking level of this then selected cooking zone 3 to 6 can be set by a rotational movement about the axis of rotation A.

In Fig. 2 the control element 9 is shown in a perspective view, which is placed on the control element receptacle 8. The control element 9 has a control part 10, which is designed as a cover or hood-like attachment. The control panel 10 is at least partially made of an electrically conductive material. The type of actuation already mentioned above in the form of the rotary movement and in the form of the tilting movement can be detected by a detection unit of the control element receptacle 8, not shown in detail. For this purpose, components in the control element 9 interact accordingly with this detection unit. In particular, it is provided that the operating element 9 is designed for capacitive detection of a rotational movement and for capacitive detection of a tilting movement in interaction with the detection unit.

In this context, the control element 9 can be touched by, for example, a finger 11 on the control part 10 and the actuation can be initiated with it, so that depending on this, the type of actuation is then recognized via capacitive detection. The control element 9 has a rotation detection part 12, which is connected to the control part 10 separate component of the portable control element 9. As in Fig. 2 can be seen, this rotation detection part 12 protrudes downwards from the control part 10 when viewed in the direction of the rotation axis A and extends further downwards than a detection underside 13 of the control part 10 when the control part 10 is arranged in the non-tilted state. As can be seen here, the rotation detection part 12 has an underside 14 which faces the control element receptacle 8 and thus also the detection unit. It is preferably provided that in the non-tilted state of the control element 10, this underside 14 of the rotation detection part 12 is arranged at a short distance from the top of the control element receptacle 8. However, the underside 14 can also sit directly on the top of the control element holder 8. The detection underside 13 of the operating part 10 is exposed downwards and is arranged facing the operating element receptacle 8. In the non-tilted state, a distance between the detection underside 13 and the top of the control element receptacle 8, viewed in the direction of the rotation axis A, is greater than any existing distance between the underside 14 of the rotation detection part 12 and this top side of the control element receptacle 8, measured in this direction of the rotation axis A. The detection underside 13 is therefore the surface over which the tilt position of the control panel 10 is detected through capacitive interaction with the detection unit. Only the rotational position of the control element 9 is detected via the rotation detection part 12 through capacitive interaction with the detection unit.

The rotation detection part 12 is movably mounted in the control element 9. It is mounted in the operating element 9 in particular in the direction of the axis of rotation A so that it can be moved relative to the detection underside 13 and thus also to the operating part 10.

In Fig. 3 is the representation according to Fig. 2 shown, here in contrast to Fig. 2 the control panel 10 is tilted relative to axis A.

As can be seen here, the axial distance between the detection underside 13 and the top of the control element receptacle 8 at the actuation point of the control element 9 has become smaller than in the non-tilted basic position Fig. 2 . To make this possible, the rotation detection part 12 is immersed in the control element 9. In this context, the underside 14 then sits on the top of the Control element receptacle 8 when such pressing on the control part 10 occurs from above in the area of the rotation detection part 12 (viewed in the direction of rotation around the axis of rotation A) in order to initiate the tilting. Even in the fully tilted position, the detection underside 13 preferably does not touch the top of the control element receptacle 8.

In Fig. 4 an embodiment of a portable control element 9 is shown. It can be seen here that the control element 9 has, in addition to the control part 10 and the separate rotation detection part 12, another additional separate component, namely a base unit 15. In the assembled state of the component of the control element 9, the control part 10 sits from above on the base unit 15, which is designed as a flat disk. The base unit 15 sits with a bottom 16 on the top of the control element receptacle 8 when the control element 9 is placed on the top of the control element receptacle 8 in a non-destructively detachable manner. The non-destructively detachable coupling of the entire control element 9 with the control element receptacle 8 is preferably implemented via magnetic holding forces. For this purpose, a holding magnet on the control element side is arranged in particular in the base unit 15, which comes into magnetic interaction with a holding magnet external to the control element, which is arranged in the control element receptacle 8.

In Fig. 5 is the control element 9 according to Fig. 4 shown in a perspective sectional view. It can be seen here that the control panel 10 is placed in a hood-like or bell-like manner on the element arranged underneath in the form of the base unit 15. A holding magnet 17 is arranged in this base unit 15. This holding magnet 17 is designed for magnetic interaction with another holding magnet 18. This further holding magnet 18 is arranged in the control panel 10. The operating part 10 can thus be released without causing damage, in particular via the magnetic holding forces of the holding magnets 17 and 18 on the base unit 15. As can also be seen, an underside 19 of the control panel 10 facing the base unit 15 is uneven. In particular, the underside 19 has a frustoconical region 20. When assembled, as in Fig. 5 is shown, a substantially complementary funnel-shaped region 21, which is formed on an upper side 22 of the base unit 15, dips into this frustoconical region 20. As can also be seen, the extent is of the operating part 10 in a direction perpendicular to the axis A is greater than that of the base unit 15.

The operating part 10 advantageously has an integrated ring area 23, which surrounds the frustoconical area 20 on the circumference. This ring area 23 is also designed to surround the base unit 15 all around. This ring area 23 has the detection underside 13, so that this detection underside 13 is an annular surface in the exemplary embodiment shown. In this exemplary embodiment it is provided that the rotation detection part 12 is arranged in this ring area 23. For this purpose, in an advantageous embodiment, the ring area 23 has a receptacle 24 which is open at the bottom and which represents an opening in the detection underside 13. In the exemplary embodiment shown, the rotation detection part 12 is designed as a curved cuboid block, which is therefore preferably designed like a banana in the direction of rotation around the axis A. It is designed as a ring segment in the circumferential direction around the axis A with an azimuthal length dimension, which can preferably be between 20° and 90°.

As shown in Fig. 5 can be seen, a resilient mounting 25 of the rotation detection part 12 in the control part 10 is created here by a specific magnet arrangement. There are preferably several individual magnets 26 arranged in the control part 10, in particular in the ring area 23. It can be provided that the operating part 10 is formed in one piece and the magnets 26 are embedded in the ring area 23. Alternatively, provision may be made, as in Fig. 5 It is shown that the operating part 10 is designed in several parts and has a base part and a cover 36 which is placed on the base part. Here, the ring area 23 is integrated into the base part, the ring area having an upwardly open receptacle in which a web of the cover 36 which projects downward from a plate-like part of the cover 36 is inserted. In this example, the magnets 26 are arranged in this web. The cover 36 can also be referred to as an insert. Preferably the cover 36 is made of a metallic material. An embodiment of a multi-part control panel can generally also be provided in other exemplary embodiments.

In addition, magnets 27 are arranged in the rotation detection part 12. Preferably, the magnets 26 and the magnets 27 face each other with the same poles, so that the magnets 26 and the magnets 27 repel each other. This creates an axially resilient bearing 25 of the rotation detection part 12 in the control part 10, which works in particular without contact. This resilient bearing 25 also works here as a reset device. This means that the rotation detection part 12 is always pressed into the basic position by the repelling magnetic effect, which is the position that protrudes maximally downwards beyond the control part 10 in the axial direction. If a tipping is now initiated, as in Fig. 3 was shown, the rotation detection part 12 is pressed axially into the ring section 23 against the repelling magnetic effect. When the tilted control part 10 is then released again and due to the repelling magnetic effect, the rotation detection part 12 is then brought back into the maximally protruding basic position and thereby, since the underside 14 is still seated on the control element receptacle 8, the control part 10 is in the non-tilted position automatically pushed back.

In a further embodiment, it can be provided that the holding magnet 17 is the same holding magnet with which the entire control element 9 is held on the control element receptacle 8.

In Fig. 6 the control element 9 is shown in a perspective view from below. The underside 16 of the base unit 15 is preferably flat. The banana-shaped shape of the rotation detection part 12 can be seen here.

The rotation detection part 12 is connected to the control part 10 in a rotationally fixed manner around the axis A.

In Fig. 7 is a sectional view of the control element 9 according to Fig. 4 and Fig. 5 shown. The tilted state of the control panel 10 is shown here. The top 28 of the control element holder 8 is shown here. It can be seen that a distance d1 between the bottom 14 and the top 28 is smaller than a distance d2 between the detection bottom 13 and the top 28. A symbolic representation of a Detection unit 35, which can be arranged in the control element receptacle 8, is shown here.

In Fig. 8 is the control element 9 according to Fig. 7 shown in a sectional view, but here the control panel 10 is tilted.

In Fig. 9 A further exemplary embodiment of a portable control element 9 is shown in a simple exploded view. In this embodiment, the rotation detection part 12 is designed with a base ring 29, which is mounted internally between the control part 10 and the base unit 15. The circumferentially closed base ring 29 is preferably formed in one piece with a rotation detection finger 30 of the rotation detection part 12. The rotation detection finger 30 is designed to protrude from the base ring 29 and is in particular curved like a claw. In this context, it has an axially downward-standing finger part 31, which in turn protrudes downwards in the axial direction through the receptacle 24 in the detection underside 13 of the ring section 23. This claw-like shape of the rotation detection finger 30 also has a bottom 14, which in terms of shape corresponds in particular to the shape of the bottom 14 in the exemplary embodiment of the portable control element 9 Fig. 4 to Fig. 6 is designed.

In Fig. 10 is the control element 9 in a more detailed exploded view Fig. 9 shown. The one-piece rotation detection part 12 here has a plurality of magnets 32 in the base ring 29, which in magnetic interaction with further magnets in the control part 10 represent a corresponding resilient bearing 25, as in the example Fig. 4 to Fig. 6 was explained. Here too, the magnets face each other with their same poles, so that a corresponding repelling effect is created. The functionality of the reset unit is then formed here at the same time and otherwise the functionality is the same as the rotation detection part 12 in the Fig. 4 to Fig. 6 . For clarity purposes are: Fig. 10 only some of the magnets are provided with the reference number 32.

In Fig. 11 is shown in a representation of the control panel 10 with a view of the underside 19 and with the rotation detection part 12 removed. As can be seen here, is also here again the truncated cone-shaped area 20 is realized. The counter magnets 33 in the control panel 10 are shown. In addition, a recess 34 is formed into which the rotation detection finger 30 is immersed. Since this depression 34 is also formed in the ring section 23 in the radial direction, in addition to a particularly relatively precise use of the rotation detection part 12, a rotation-proof connection in the circumferential direction of the axis A is also created.

In Fig. 12 is a sectional view of the exemplary embodiment of the portable control element 9 according to Fig. 9 to 11 shown. The tilted state of the control panel 10 is shown here. Regarding the distances between the bottom 14 and the top 28 and between the detection bottom 13 and the top 8, the comments can again be referred to Fig. 7 to get expelled.

In Fig. 13 is the sectional view of the control element 9 according to Fig. 12 shown, whereby here, in contrast, the control panel 10 is shown in the state tilted towards axis A.

As can be seen in the examples, the mounting of the operating part 10 on the base unit 15 is also such that there is play between the conical area and the frustum-shaped area in order to enable the tilting movement of the operating part 10 relative to the base unit 15.

Reference symbol list

1

hob

2

Hob plate

3

Cooking zone

4

cooking zone

5

cooking zone

6

cooking zone

7

Operating device

8th

Control element holder

9

Control element

10

Control panel

11

finger

12

Rotation detection part

13

Detection bottom

14

bottom

15

Base unit

16

bottom

17

Holding magnet

18

Holding magnet

19

bottom

20

Area

21

Area

22

Top

23

Ring area

24

Recording

25

storage

26

magnet

27

magnet

28

Top

29

Base ring

30

Rotation detection finger

31

finger part

32

magnet

33

Counter magnet

34

depression

35

Acquisition unit

36

cover

A

Axis of rotation

d1

Distance

d2

Distance

Claims (13)

1. Operating device (7) for a cooking appliance (1), with an operating element support (8) and a portable operating element (9), which can be placed on and removed from the operating element support (8) in a non-destructively releasable manner, wherein, in the state in which it is placed on the operating element support, the portable operating element (9) can be actuated for setting operating conditions of the cooking appliance (1), wherein the operating element (9) has a base unit (15), and an operating part (10) separate from the base unit (15), which, in the state in which it is connected to the base unit (15), is placed on the base unit (15) and is an outer part of the operating element (9), wherein the operating element (9) can be rotated about an axis of rotation (A) of the operating element (9) for setting at least one operating condition, wherein the operating element (9) has a rotation detection part (12) which is separate from the operating part (10) and the base unit (15), with which a rotational position at least of the operating part (10) can be detected relative to the operating element support (8) in the state of the operating element (9) in which it is placed on the operating element support (8) and interacts with a detection unit (35) of the operating device (7), wherein the rotation detection part (12) is arranged projecting downwardly in relation to a detection underside (13) of the operating part (10), and the rotation detection part (12) is mounted moveably in the operating element (9) relative to the operating part (10) viewed in the direction of the axis of rotation (A), wherein the detection underside (13) is designed to be electrically conductive at least in regions and is designed to detect a tilted position of the operating element (9) relative to the operating element support (8) in the state of the operating element (9) in which it is placed on the operating element support (8) and interacts with the detection unit (35) of the operating device (7), characterised in that the rotation detection part (12) is mounted in the operating element (9) in an axially sprung manner, such that the rotation detection part (12) can be automatically pushed into the axially normal position.
2. Operating device (7) according to claim 1, characterised in that an underside (14) of the rotation detection part (12) is arranged projecting further downwardly in the direction of the axis of rotation (A) than the detection underside (13) of the operating part (10).
3. Operating device (7) according to one of the preceding claims, characterised in that the spring mounting (25) is formed by at least one mechanical spring element.
4. Operating device (7) according to claim 1 or 2, characterised in that the spring mounting (25) is formed by at least one pair of magnets (26, 27, 32, 33), which face toward one another with their repelling poles, wherein a magnet (27, 32) is arranged in the rotation detection part (12) and a further magnet (26, 33) is arranged in the operating element (9) externally to the rotation detection part (12).
5. Operating device (7) according to one of the preceding claims, characterised in that the rotation detection part (12) is designed as a cuboid, in particular curved block and is mounted in the operating part (10) in an axially moveable manner in a support (24) which is open at the bottom.
6. Operating device (7) according to one of the preceding claims 1 to 4, characterised in that the rotation detection part (12) has a base ring (29) on which a curved rotation detection finger (30) is arranged in a protruding manner, wherein the rotation detection finger (30) is arranged protruding downwardly in relation to the detection underside (13).
7. Operating device (7) according to claim 6, characterised in that the base ring (29) is arranged between the operating part (10) and the base unit (15).
8. Operating device (7) according to one of the preceding claims, characterised in that the rotation detection part (12) is coupled to the operating part (10) in the direction of rotation about the axis of rotation (A) in a rotationally fixed manner.
9. Operating device (7) according to one of the preceding claims, characterised in that the operating part (10) and the base unit (15) are connected to one another in a non-destructively releasable manner, in particular held by magnets (17, 18).
10. Operating device (7) according to one of the preceding claims, characterised in that, in the connected state, the operating part (10) and the base unit (15) are connected to one another in a rotationally fixed manner in the direction of rotation about the axis of rotation (A).
11. Operating device (7) according to one of the preceding claims, characterised in that the base unit (15) has a funnel-shaped region (21) on an upper side (22), into which, in the connected state, a region (20) shaped as a truncated cone immerses on the underside (19) of the operating part (10).
12. Operating device (7) according to one of the preceding claims, characterised in that the detection underside (13) is the underside of a ring region (23) of the operating part (10).
13. Operating device (7) according to one of the preceding claims, characterised in that the operating element (9) is designed to capacitively detect the rotational position and to capacitively detect the tilted position.

Images