Device for operating a built-in kitchen appliance

Abstract

Operating device (3) for operating a hob system (1), comprising an operating element (13) and a fastening device (14, 32, 41, 43, 47, 53, 58, 63) for fastening the operating element (13) to a piece of kitchen furniture, comprising a plurality of pin-shaped elements (24, 34, 44, 48, 55, 60) and a fixing means (26, 35, 50), wherein a plurality of the pin-shaped elements (24, 34, 44, 48, 55, 60) each have a partially threaded section (25, 57), wherein the fixing means (26, 35, 50) has a nut (28) with one or more fixing threaded sections (29) which fit the partially threaded sections (25, 57). are designed such that the nut (28, 36, 56) cooperates with a plurality of the partial thread sections (29).

Description

[0001] The invention relates to an operating device for operating a built-in kitchen appliance. The invention also relates to a built-in kitchen appliance with such an operating device.

[0002] Hobs are typically operated via touch-sensitive controls (so-called touch panels) or control knobs. Corresponding hob systems are known, for example, from DE 10 2009 025 038 A1 and EP 1 944 553 B1, as well as DE 10 2016 217 724 A1. A control knob for operating a hob is known from DE 20 2009 009 727 U1.

[0003] Operating devices are known from DE 10 2005 032 508 A1, DE 10 2006 022 326 A1, DE 10 2016 217 724 A1 and DE 20 2009 009 727 U1.

[0004] One object of the invention is to improve an operating device for operating a built-in kitchen appliance (operating device). One object of the invention is, in particular, to provide an operating device for a built-in kitchen appliance that enables better, in particular simpler and / or more reliable, installation.

[0005] This object is achieved by an operating device according to claim 1.

[0006] According to one aspect, the operating device comprises a fastening device for fastening an operating element to a piece of kitchen furniture, which fastening device comprises a holder with a plurality of pin-shaped elements and a fixing means which cooperates with a plurality of the pin-shaped elements.

[0007] Information on the interaction of the fixing means with a plurality of the pin-shaped elements relates in particular to the intended use of the operating device, in particular its intended arrangement in or on a piece of kitchen furniture.

[0008] It should also be noted that the application encompasses various alternatives of the operating device, which – at least in part – do not utilize all of the features of the subject matter of claim 1. The features of claim 1 are not to be understood as mandatory features with regard to possible subsequent applications and / or divisional applications. They may also be omitted or be designed alternatively, particularly in alternative embodiments of the operating device.

[0009] In general, the operating device has a fastening device, wherein the fastening device has at least one pin-shaped element, relative to which, in particular in the direction of its longitudinal axis, at least one fixing means can be fixed.

[0010] The holder can be used to hold the control element.

[0011] Preferably, the operating device can be designed as an operating knob.

[0012] According to one aspect, the operating device has precisely one fixing means that interacts with a plurality of the pin-shaped elements. In particular, it can have a single fixing means.

[0013] The fixing means may in particular comprise a threaded nut.

[0014] The pin-shaped elements are also called pin-shaped processes.

[0015] Threaded bolts, in particular, serve as pin-shaped elements. The pin-shaped elements can each have one or more partial thread sections, particularly on their outer circumferential side and / or on their inner circumferential side. It is also possible for only a subset of the pin-shaped elements to have thread sections, while another subset of the pin-shaped elements does not have any thread sections.

[0016] The pin-shaped extensions can also be designed as metal rods, in particular as threaded rods, in particular as metal fine-threaded rods.

[0017] This can make it easier to apply the fixative.

[0018] A variant in which all pin-shaped elements have threaded sections with which the fixing means interacts leads to a particularly stable arrangement of the fastening device on the kitchen furniture.

[0019] The operating element can in particular have a circular, annular or polygonal cross-section.

[0020] The operating element can, in particular, be rotatably mounted on the fastening device. It can, in particular, comprise a component that is rotatably mounted relative to the fastening device.

[0021] The rotatably mounted component of the operating element can in particular have a circular cross-section.

[0022] The control element may include operating electronics. In particular, it may include the entire operating electronics for operating one or more functions of the built-in kitchen appliance.

[0023] The operating electronics can be arranged entirely in front of the kitchen unit or outside the kitchen unit. Preferably, the operating electronics are arranged entirely within the control element. The operating electronics can preferably comprise a circuit board. The term "circuit board" is understood below to refer in particular to operating electronics as such, even if it does not necessarily comprise a circuit board.

[0024] The control element can, in particular, comprise a circuit board. The circuit board can, in particular, be circular in shape. It can, in particular, have a width of at most 3 cm, in particular at most 2 cm, in particular at most 1 cm. The width is measured in the radial direction.

[0025] The circuit board can be arranged in particular in a cavity, in particular an encapsulated cavity, in particular in a liquid-tight encapsulated cavity, of the operating element.

[0026] The control element can have one or more magnets. These can serve to support the control element. In particular, they can enable self-aligning positioning of the control element.

[0027] With the help of one or more magnets, haptic feedback is also possible when the control element is rotated.

[0028] The control element can have one or more Hall sensors.

[0029] The operating element can be mounted mechanically or magnetically, in particular on the holder. It can, in particular, have one or more locking elements, in particular with ball-type thrust pieces.

[0030] The control element may comprise a lighting device. The lighting device may comprise at least one lighting means, in particular one or more light-emitting diodes (LEDs).

[0031] The control element may have one or more transparent areas and / or one or more roughened areas and / or one or more polished areas. In this case, an area is understood to mean, in particular, a simply connected surface.

[0032] The operating element can in particular have a hollow axis.

[0033] Further aspects and details of the control element emerge from the description of the embodiments.

[0034] According to one aspect, the fastening device comprises at least two, preferably three or more, pin-shaped elements. A higher number of pin-shaped elements can lead to a more stable arrangement of the fastening device on a furniture front.

[0035] The fastening device preferably has a maximum of 6, in particular a maximum of 4, preferably 3 or 2 pin-shaped elements, or exactly one pin-shaped element. A smaller number of pin-shaped elements leads to simpler, and in particular faster, assembly.

[0036] According to one aspect, the fastening device or parts thereof can be interchangeable. In particular, pin-shaped elements of different lengths can be provided. This allows for easy adaptation of the fastening device to the ceiling of a mounting surface, in particular a front panel of a piece of kitchen furniture.

[0037] The pin-shaped elements can be formed integrally with the bracket. This can result in particularly advantageous stability. This can also facilitate the manufacture of the fastening device. Alternatively, the pin-shaped elements can be screwed into the bracket, inserted through openings in the bracket, inserted into recesses in the bracket, or clipped onto the bracket.

[0038] The pin-shaped elements can also be designed separately from the bracket. In particular, they can be designed to clamp the bracket to a furniture front.

[0039] The side of the fastening device facing the user during the intended use, particularly the arrangement, of the kitchen appliance is referred to as the front side; the opposite side, facing away from the user, is also referred to as the rear side. The front side of the operating device forms, in particular, its visible side.

[0040] According to one variant, the fixing means comprises a plurality of nuts. The fixing means can, in particular, comprise a separate nut for each of the pin-shaped elements for screwing onto the pin-shaped element.

[0041] Cap nuts can be used as a fixing device.

[0042] According to one variant, the pin-shaped elements each have a locking section. This locking section can be locked into the fixing means with a matching mating locking section. The locking connection can be designed to be reversibly detachable or irreversible, in particular non-destructively detachable, in particular in the manner of a reversibly detachable or non-detachable cable tie.

[0043] The fixing means may also include locking elements. These locking elements can be, for example, locking tabs. The locking elements can preferably be reversibly detachable. The locking element can consist of several parts.

[0044] The fixing devices can be equipped with wave springs. This ensures contact pressure.

[0045] According to one aspect, the holder for the operating element can be designed as an annular plate on which the operating element is reversibly removable or fixedly arranged.

[0046] The ring-shaped plate, particularly on its back, can form a contact surface for mounting on a furniture front. This results in a particularly stable, reliable arrangement of the control device on the furniture front.

[0047] The plate can be relatively thin. It can, in particular, have a thickness of no more than 5 mm, especially no more than 3 mm, especially no more than 1 mm. A thicker design can lead to a more stable construction.

[0048] The holder can be made of metal or plastic.

[0049] The holder can, in particular, have a circular, annular, or polygonal cross-section. The cross-section of the holder is preferably adapted to the cross-section of the control element. Preferably, the holder is not visible, at least from the front, when the control element is attached.

[0050] The holder may, in particular, comprise mechanical and / or magnetic holding means for holding the control element. The holding means may, in particular, comprise retaining tabs, openings, screws, permanent magnets, or ferromagnetic elements that interact with permanent magnets. Combinations of such elements are also possible.

[0051] The control element can be arranged on the holder in a removable, in particular reversibly removable, manner.

[0052] The reversible detachability of the control element allows it to be removed when not in use or for cleaning purposes, for example. The detachability of the control element can also serve as a child safety feature.

[0053] The control element can also be fixed on the holder.

[0054] A fixed arrangement of the control element on the holder is understood to mean in particular that the control element cannot be removed from the holder without tools and / or without damage.

[0055] According to one aspect, the partial thread sections can together form sections of a single thread. In particular, they can be configured such that their threaded parts are aligned along a single, continuous thread line.

[0056] In particular, the fixing threaded sections of the nut can form a single, continuous thread. This can facilitate screwing the nut onto the pin-shaped extensions with the partially threaded sections.

[0057] According to one aspect, the partially threaded sections can be designed identically. In particular, the pin-shaped extensions can be designed identically. This can simplify production.

[0058] With identically formed pin-shaped extensions, the partial thread sections do not need to form partial sections of a continuous thread. However, this is possible.

[0059] According to a further aspect, the nut has a number and arrangement of fixing thread sections that matches the number and arrangement of the partial thread sections.

[0060] For example, in the case of three threaded bolts, the nut may have three threaded fixing sections. Generally, the number of threaded fixing sections can be exactly equal to the number of threaded bolts.

[0061] The threaded bolts can be arranged evenly distributed in the circumferential direction on or at the bracket.

[0062] The fixing threaded sections of the nut can each extend over angular ranges that are smaller than the angular distance between adjacent threaded bolts. This allows the nut to be slipped on.

[0063] The fixing thread sections can in particular be designed such that they can each be brought into engagement with exactly one of the partial thread sections.

[0064] The fixation device can also be attached to the pin-shaped projections in a bayonet-type manner. This can allow the fixation device to be attached to the pin-shaped projections with a single movement. For this purpose, it can be placed in an over-dead-center position.

[0065] According to a further aspect, the fastening device has at least one passage for a signal-transmitting element.

[0066] The feedthrough can be a cavity, in particular a cable duct, for passing a signal cable through a furniture front.

[0067] According to one aspect, the passage can be formed in one, two, three, or all of the pin-shaped extensions. In principle, the passage can also be formed by the pin-shaped extension itself. The pin-shaped extension can also delimit the passage in sections, in particular at least on one side.

[0068] The pin-shaped extension can, for example, be groove-shaped, semi-tubular or tubular.

[0069] It is particularly possible to integrate a cable feedthrough into one or more, in particular all, of the pin-shaped extensions.

[0070] The pin-shaped extensions can themselves form signal-transmitting elements. This can lead to savings in cables. Furthermore, it can ensure a particularly reliable signal connection to the control element.

[0071] According to a further aspect, the fixing means comprises a support ring for supporting the pin-shaped projections.

[0072] The fixing means can generally be designed in several parts, in particular in two parts.

[0073] According to a further aspect, the support ring can be designed to be resilient.

[0074] This allows pressure to be exerted on the back of a board, especially a furniture front.

[0075] The support ring can, in particular, be designed in the manner of a disc spring. It can also comprise several spring elements, such as leaf springs, disc springs, or wave springs.

[0076] According to a further aspect, the nut can be locked to the support ring. It can generally be removably fixed to the support ring.

[0077] One or more, in particular three, locking tabs can be provided to lock the nut to the support ring. The locking tabs can have retaining lugs, which can in particular engage around an edge of the support ring. The locking tabs can in particular be spring-mounted. The locking tabs can in particular be arranged on the outside of an elongated hole. In this case, they can be connected to the support ring via thin webs. The webs can in particular have a width of at most 5 mm, in particular at most 3 mm.

[0078] According to a further aspect, the nut is mounted on the support ring so that it can rotate relative to the support ring. This facilitates the application of the nut to the fastening device, in particular the pin-shaped extensions. When screwing the nut onto the pin-shaped extensions, the latter can be supported, in particular by the support ring, against a load transverse to their axis.

[0079] According to a further aspect, the nut can be spring-mounted on the support ring in the screwing direction. This allows a specific contact pressure of the support ring against the back of a furniture front to be achieved.

[0080] According to a further aspect, the fastening device, in particular the fixing means, can comprise plastic components. It is particularly possible to form all components of the fastening device from plastic. This can enable particularly simple production.

[0081] The fastening device can also include metal components, especially stainless steel. This can result in particularly high stability and load-bearing capacity.

[0082] A built-in kitchen appliance can be improved by an operating device according to the invention. The built-in kitchen appliance can be, in particular, a hob, an extractor hood, or a combination appliance with a hob and extractor hood. This list is not intended to be exhaustive.

[0083] According to an independent aspect, which constitutes a separate subject matter of the invention but can optionally be combined with the further features, the operating device can have a central recess, particularly on the front of the operating device. This aspect is particularly advantageous even without the fastening device, particularly without the one or more pin-shaped elements and / or the fixing means.

[0084] The central recess can penetrate the fastening device and / or the operating element. The central recess is preferably designed such that the kitchen furniture, in particular a kitchen wall, in particular a kitchen front, is uncovered by the operating device in a front view. The central recess is preferably round, in particular circular, in a plan view.

[0085] Preferably, the operating element, in particular a rotatably mounted component of the operating element, in particular the toggle cover, and / or a circuit board, in particular a circuit board supporting at least one lighting device, and / or at least a part of the fastening device, are ring-shaped, in particular circular. This allows, in particular, the central recess to be provided. Preferably, the rotatably mounted component of the operating element surrounds the central recess in a ring-shaped, in particular circular, shape.

[0086] According to an independent aspect, which forms a separate subject matter of the invention but can optionally be combined with the further features, the operating device can have at least one illumination means, in particular an LED, in particular a white LED, an RGB LED and / or an RGBW LED. A main light emission direction of the illumination means can be oriented, at least with regard to one directional component, in particular exclusively, toward a rear side and / or a front side and / or a side surface of the operating device. This advantageously ensures that the illumination can be particularly uniform, in particular with a reduction in intensity differences.

[0087] According to an independent aspect, which forms a separate subject matter of the invention but can optionally be combined with the further features, the operating device, in particular the operating element and / or the fastening device, can have at least one reflector for reflecting the light emitted by the at least one illuminating means, in particular in the direction of a front side and / or a side surface of the operating device. The at least one illuminating means can be oriented such that a main radiation direction of the emitted light is oriented in the direction of the front side and / or the rear side and / or a side surface of the operating device. The reflector can be flat or curved, in particular concave and / or convex. With a curved design, the illumination can be made more uniform.In principle, the at least one reflector offers the advantage that a particularly compact design can be achieved and / or a particularly targeted influence on the light distribution is enabled and / or the beam path of the light can be designed in a particularly targeted manner, even in a small space.

[0088] In addition to the reflector, a masking means, in particular a masking ring, can be provided, in particular made of impermeable plastic. The masking means is also referred to as a barrier. The masking means can limit the at least one illumination means outwards and / or inwards and / or to one side and / or prevent the illumination means from radiating in an undesired direction, in particular laterally. The light is preferably radiated, in particular guided, only to the desired area, in particular a light guide. The light should preferably be radiated, in particular guided, forward.

[0089] Preferably, the operating device can be designed such that the light emitted by the at least one illuminating means is emitted forwards and / or inwards and / or outwards, in particular with respect to an annular component of the operating device, in particular on the inner and / or outer surface of a light guide.

[0090] Preferably, the at least one illumination means can emit the light opposite to the direction in which it emits from the operating device, in particular via the light guide body.

[0091] According to a preferred aspect, the central recess can provide a view of the kitchen furniture. Alternatively, a decorative element can be arranged in the central recess, which preferably has and / or corresponds to the surface finish of the kitchen furniture, in particular the furniture wall, in particular the furniture front, in particular the furniture wall to which the operating device is attached. The decorative element is preferably disc-shaped, in particular circular. It can be connected to the operating device in a force-fitting and / or form-fitting and / or material-fitting manner, in particular by adhesive bonding.

[0092] The operating device can have a plurality of lighting means that can be controlled separately from one another, in particular for emitting light of different brightness and / or different colors.

[0093] A lighting control system can be designed, in particular, to output information about the currently output heat output, the fan power of the extractor hood, the cooking zone temperature, and / or the operating state of the hob and / or the extractor hood to the user via the at least one lighting device. For this purpose, the lighting control system can be in signal communication with a control system of the at least one hob and / or the extractor hood and / or can be formed integrally with them.

[0094] The operating device preferably comprises a light-guiding body, which is preferably ring-shaped, in particular circular, and / or functions as a diffuser and / or as a focus element. The light-guiding body is preferably a component of the operating element and / or the fastening device. The light-guiding body can be illuminated by means of the at least one illumination means. The light-guiding body preferably delimits the central recess, in particular completely. As a result, the central recess can be illuminated by means of the at least one illumination means via the light-guiding body. The information output to the user by means of the illumination is thus particularly easy to perceive, in particular in the area in which the user makes a user input via the operating element. The central area is therefore the focus of the user's perception and is therefore particularly suitable for transmitting corresponding information.

[0095] Alternatively or additionally, the light guide body can delimit an outer circumference of the operating element and / or the fastening device at least in sections, in particular completely.

[0096] In particular, the at least one illumination means can be designed such that the light guide body can be illuminated independently of one another on an inner side and an outer side and / or on the inner circumference and on the outer circumference of the operating device.

[0097] The light guide body can be designed in one piece or in several parts.

[0098] The rotating parts of the control element, in particular the knob cover, can be mounted using roller bearings, in particular ball bearings, and / or plain bearings.

[0099] Preferably, a connection of at least one bearing with the rotatable part, in particular with the toggle cover, is formed by a force-locking connection, in particular by a press fit, and / or by means of a pressure piece and / or magnetically.

[0100] The rotational position between the rotatable part of the control element, in particular the knob cover, and a base body, in particular the fastening device, is preferably detected by means of a Hall sensor. Other sensors for detecting a rotational movement are also suitable, for example, a rotary encoder with a coding disk and / or a button and / or the like.

[0101] Preferably, the fastening device, in particular the fixing threaded sections and / or the partial threaded sections, is designed in such a way that tilting of the joining partners, in particular the fixing threaded sections and the partial threaded sections, is reliably prevented. For this purpose, for example, at least one threaded section can be at least partially interrupted, in particular in the circumferential direction, in particular slotted, with longitudinal slots.

[0102] Preferably, the operating device is designed to be mounted blindly, i.e. in such a way that the fastening device can be assembled and / or locked, in particular tightened, without direct visual contact, in particular that the pin-shaped elements and the fixing means can be connected to one another without direct visual contact.

[0103] Another object of the invention is to provide an improved hob system.

[0104] This object is achieved by a hob system with an operating device according to the above description. The hob system can be further developed with at least one of the features described above in connection with the operating device. The advantages of the hob system correspond to the advantages of the operating device. The hob system preferably comprises at least one hob, in particular with at least one, in particular at least two, cooking zones, and / or at least one extractor device, in particular a downdraft extractor.

[0105] The operating device is preferably designed to control the hob system, in particular the at least one hob, in particular the at least one cooking zone, and / or the at least one extractor device. For this purpose, the at least one operating device can be signal-connected to the hob system, in particular the at least one hob and / or the at least one extractor device. The at least one extractor device is preferably designed as a downdraft extractor or as a device for extracting cooking vapors downwards, in particular through a downward cooking vapor inlet opening of the extractor device.

[0106] Another object of the invention is to provide an improved furniture system.

[0107] This object is achieved by a furniture system comprising a piece of kitchen furniture and an operating device attached to the kitchen furniture, in particular to a furniture wall, in particular to the furniture front, as described above. Preferably, the operating element is attached to the kitchen furniture, in particular to the furniture wall, in particular to the furniture front, by means of the fastening device. The advantages of the furniture system correspond to the advantages of the operating device or hob system described above. Preferably, the furniture system is further developed with at least one of the features described above in connection with the operating device and / or the hob system.

[0108] Particularly preferably, the kitchen furniture, in particular the furniture wall, in particular the furniture front, is uncovered in the region of the central recess by the operating device, in particular in a front view.

[0109] A further object of the invention is to improve a method for assembling an operating device for a built-in kitchen appliance.

[0110] This task is solved by a procedure with the following steps: - Providing an operating device, in particular according to the preceding description, with a fastening device with a plurality of pin-shaped extensions, - Drilling holes in a kitchen unit, - whereby the number and arrangement of the holes corresponds to the number and arrangement of the pin-shaped extensions of the fastening device.

[0111] Further advantages and details of the invention will become apparent from the description of exemplary embodiments with reference to the figures. Individual aspects of the exemplary embodiments, taken individually and in conjunction with one another, may represent aspects of the invention or a separate invention. In particular, details of various exemplary embodiments can be combined with one another as desired. They show: Fig. 1 a schematic representation of a hob system with two hobs and an extractor device in the form of a downdraft extractor with several operating devices for operating the hob system, Fig. 2 an exploded view of one of the operating devices in the Fig. 1, Fig. 3A a perspective view of the operating device in the Fig. 3, Fig. 3B a sectional view of the operating device along the section line IIIB-IIIB in the Fig. 3A, Fig. 4 an exploded view of another variant of an operating device, Fig. 5A is a perspective view of a part of the operating device in the Fig. 4, Fig. 5B a sectional view of the operating device along the section line VB-VB in the Fig. 4, Fig. 6 an exploded view of an operating device according to a further embodiment, Fig. 7A a side view of the operating device in the Fig. 6, on a kitchen base unit, especially on a kitchen front, Fig. 7B a sectional view of the operating device along the section line VIIB-VIIB in the Fig. 7A, Fig. 8 an exploded view of an operating device according to a further embodiment, Fig. 9A is a perspective view of a part of the operating device in the Fig. 8, Fig. 9B a sectional view of the operating device along the section line IXB-IXB in the Fig. 8, Fig. 10 an exploded view of an operating device according to another embodiment, Fig. 11A is a perspective view of the operating device in the Fig. 10, Fig. 11B a sectional view of the operating device along the section line XIB-XIB in the Fig. 11A, Fig. 12 an exploded view of an operating device according to another embodiment, Fig. 13A is a side view of the operating device according to the Fig. 12, Fig. 13B is a sectional view of the operating device along the section line XIIIB-XIIIB in the Fig. 13A, Fig. 14 an exploded view of an operating device according to another embodiment, Fig. 15A is a perspective view of the operating device in the Fig. 14, Fig. 15B is a sectional view of the operating device along the section line XVB-XVB in the Fig. 15A, Fig. 16 a perspective view of an operating device according to a further embodiment, Fig. 17A is a perspective view of the operating device in the Fig. 16, Fig. 17B a sectional view of the operating device along the section line XVIIB-XVIIB in the Fig. 17A, Fig. 18 a perspective view of an operating device according to a further embodiment, Fig. 19A a side view of the operating device in the Fig. 18, Fig. 19B is a sectional view of the operating device along the section line XIXB-XIXB in the Fig. 19A, Fig. 20 a perspective view of an operating device according to a further embodiment, or Fig. 21 a sectional view of the operating device along the section line XXI-XXI in the Fig. 20.

[0112] In the following, the general components of a kitchen appliance, in particular in the form of a hob system, in particular a hob extractor system 1, are described. The hob extractor system 1 comprises at least one hob 2. In the Fig. 1 exemplary hob extractor system 1, two hobs 2, preferably with two cooking zones each, are provided.

[0113] The hobs 2 can essentially be any type of hob. They can include, in particular, induction hobs, gas hobs, tepan yaki hobs, wok hobs, electric hobs or hot plates, grills, or other hobs.

[0114] In the Fig. 1, operating devices are provided for operating the hobs 2, in particular control knobs 3. Operation by means of touch-sensitive sensors, which can in particular be integrated into the hobs 2, is likewise possible. Operation via a separate operating module is also conceivable. In this case, the hobs 2 can be designed to be non-autonomous, i.e. without their own control electronics. This can simplify the structure of the hobs 2. It is particularly possible to reduce the overall height of the hobs 2. It can in particular be no more than 10 cm, in particular no more than 6 cm, in particular no more than 5 cm, in particular no more than 4 cm, in particular no more than 3 cm, in particular no more than 2 cm.

[0115] Furthermore, the cooktop extraction system 1 comprises a downdraft extractor 4. The downdraft extractor 4 forms a device for extracting cooking fumes.

[0116] The downdraft extractor 4 is located between the two hobs 2. It can also be located to the side of the hobs 2 or in the area behind the hobs 2.

[0117] The downdraft extractor 4 has a cooking vapor inlet 5. In the illustrated alternative, the cooking vapor inlet 5 is elongated, in particular rectangular. The cooking vapor inlet 5 has, in particular, an aspect ratio of at least 2:1, in particular at least 3:1, in particular at least 5:1, in particular at least 10:1. Typically, the aspect ratio of the cooking vapor inlet 5 is at most 100:1, in particular at most 50:1.

[0118] The cooking fume inlet opening 5 can also be round, in particular circular.

[0119] Multiple cooking vapor inlet openings 5 ​​may also be provided. It is particularly possible to provide two or more cooking vapor inlet openings 5, in particular slot-shaped cooking vapor inlet openings 5. These can, in particular, be aligned parallel to one another.

[0120] The cooking vapor inlet opening 5 can be reversibly closed, in particular, by means of a closure element 6. In the case of multiple cooking vapor inlet openings 5, these can each be reversibly closed separately, i.e., independently of one another, by means of closure elements 6.

[0121] An additional control knob 3 is provided for operating the downdraft extractor 4. Operation using a touch-sensitive sensor is also possible.

[0122] The downdraft extractor 4 is arranged, in particular, in the area of ​​a cooking surface 8. It serves to extract cooking fumes from the area above the cooking surface 8 to an area below the cooking surface 8. It is therefore also referred to as a downdraft system (extraction, in particular, downwards through the cooking fume inlet opening 5).

[0123] The cooking fume inlet opening 5 is preferably arranged stationary relative to the cooking surface level 8.

[0124] According to an alternative not shown in the figures, the area of ​​the downdraft extractor 4 with the cooking fume inlet opening 5 can be displaced in a direction perpendicular to the cooking surface plane 8.

[0125] In principle, the hob extraction system 1 can also include an extractor hood.

[0126] The hob system 1 can be designed as an assembly unit. In this case, one or more hobs 2 are integrated with one or more downdraft extractors 4 into a single system. They are arranged in a common housing. For installation, this housing simply needs to be inserted into a recess in a worktop 9.

[0127] In the area below the hob system 1, compartments, in particular drawers 10 of a kitchen base unit 11, can be used essentially without restriction.

[0128] The cooktop system 1 is modular. In this case, essentially freely selectable cooktops 2 can be flexibly combined with one or more of the downdraft extractors 4. In particular, all of the cooktops 2 can be operated, i.e., controlled, using control knobs 3, which are described in more detail below. The downdraft extractor(s) 4 can also be operated, i.e., controlled, using control knobs 3.

[0129] The control knobs 3 are also modular. They are each connected to one of the hobs 2 and / or the downdraft extractor 4 via an interface 12. In particular, they are signal-connected to one of the several hobs 2 and / or the downdraft extractor 4.

[0130] The control knobs 3 are particularly standardized. This means that the same control knob 3 is suitable for operating different cooktops 2 and / or downdraft extractors 4. The control knobs 3 are self-configuring. This means that when one of the cooktops 2 and / or downdraft extractors 4 is connected, they automatically recognize which built-in kitchen appliance is involved and their functionality is adjusted accordingly.

[0131] Such a uniform, standardized design of the control knobs 3 facilitates their manufacture. Furthermore, it allows for easy interchangeability of the control knobs 3. Finally, it facilitates the assembly of the cooktop extractor system 1.

[0132] In the following, with reference to the Fig. 2 to 21 describe different variants of a control knob 3. The control knob is referenced in all variants with the reference symbol 3. In the different variants, identical components have the same reference numbers and, for reasons of efficiency, are not described multiple times.

[0133] According to the first, based on the Fig. 2 to Fig. 3B, the control knob 3 comprises a control element 13 and a fastening device 14.

[0134] The control element 13 comprises a toggle cover 15. The control element 13 comprises a ball bearing 16. The control element 13 comprises a magnet holder 17. The control element 13 comprises at least one magnet 18. The control element 13 comprises a housing 19. The control element 13 comprises a circuit board 20.

[0135] A cable 21 is connected to the circuit board 20 for transmitting electrical and / or control signals from the control knob 3 to the hob system 1. In particular, the information transmission can take place bidirectionally.

[0136] The circuit board 20 also has electrical components 22 arranged on the circuit board 20. The electrical components 22 include, in particular, components for operating the cooktop system 1 and / or lighting means, in particular LED lighting means. The circuit board 20 is, in particular, circular in shape.

[0137] The circuit board 20 has, in particular, an outer radius R and an inner radius r. For the outer radius, in particular, 1 cm ≤ R ≤ 5 cm, in particular 2 cm ≤ R ≤ 4 cm, in particular 2.5 cm ≤ R ≤ 3.5 cm, and in particular R = 3 cm.

[0138] For the inner radius r, in particular 0.5 cm ≤ r ≤ 4.5 cm, in particular 1.5 cm ≤ r ≤ 3.5 cm, in particular 2 cm ≤ r ≤ 3 cm and in particular r = 2.5 cm applies.

[0139] The toggle cover 15 is circular in shape. In particular, the toggle cover 15 has an opening extending through the axial direction. The opening has a radius whose length is in particular at least 70%, in particular at least 75%, and in particular at least 80% of the length of a radius of the toggle cover 15. The toggle cover 15 is designed to enclose and cover the remaining components of the control element 13. The toggle cover represents, in particular, the outermost part of the control element 13 with which a user directly interacts.

[0140] The knob cover 15 can be made at least partially from a transparent and / or semi-transparent, in particular milky, material, in particular a plastic, which is particularly permeable to light from an LED. In particular, the material of the knob cover 15 can be permeable to red light and / or blue light and / or white light and / or light across the entire light spectrum perceptible to humans. In particular, it is possible for a control knob 3 equipped with red illumination to be used to operate a hob, while a control knob 3 equipped with blue illumination to be used to operate the downdraft extractor 4.

[0141] It is also possible that the toggle cover 15 is made of metal.

[0142] The ball bearing 16 serves in particular to accommodate at least one ball 31 (cf. Fig. 3), over which the toggle cover 15 is rotatably mounted.

[0143] The ball bearing 16 can in particular be designed as a deep groove ball bearing.

[0144] The magnet holder 17 serves to support the at least one magnet 18. It is particularly possible for the magnet bearing 17 to serve to support more than one magnet 18, in particular at least two, in particular at least three, in particular at least five, in particular at least seven, in particular at least ten, in particular at least twelve and in particular at least fifteen magnets 18.

[0145] The magnets 18 can detect the angle of rotation by which a user has turned the control knob 15. Detecting this angle of rotation allows activation and / or deactivation and / or a change in the system parameters of the cooktop 2 and / or the downdraft extractor 4. The changing magnetic signal can be detected by electrical components 22 of the circuit board 20 and transmitted to the cooktop system 1 via the cable 21.

[0146] The remaining components of the control element 13 are arranged or mounted on the housing 19. The housing 19 is at least partially enclosed by the knob cover 15. The circuit board 20 is arranged in particular on the underside of the housing 19, i.e., the side facing the furniture front 12.

[0147] The fastening device 14 comprises a fastening element 23 with a total of three pin-shaped elements 24. It is particularly possible for the fastening element 23 to have a different number of pin-shaped elements 24. For example, it is possible for the fastening element 23 to have at least two, in particular at least four, and in particular at least five pin-shaped elements.

[0148] The fastening element 23 is also circular in shape. The pin-shaped elements 24 extend from the circular fastening element 23 in the direction of the furniture front 12. The pin-shaped elements 24 are distributed evenly over the fastening element 23. In particular, in the Fig. 2 to 5, the pin-shaped elements 24 have a relative phase of 120° to each other. With a uniform distribution, n pin-shaped elements 24 can generally have a relative phase of 360° to each other. It is also possible that the pin-shaped elements 24 are distributed unevenly over the annular fastening element 23.

[0149] The pin-shaped elements 24 each have at least one partial thread section 25. It is also possible for the pin-shaped elements 24 to have at least two and in particular at least three partial thread sections 25. In the present variant, the pin-shaped elements 24 have three partial thread sections 25, which extend on each side of the pin-shaped element 24 along the entire length of the pin-shaped element 24 and are identical to one another.

[0150] The pin-shaped elements 24 are intended to penetrate the furniture front 12 and interact with at least one fixing means 26 on the other side of the furniture front 12 such that the control knob 3 is held and, in particular, fastened to the kitchen front 12. For this purpose, it is particularly possible to create through-holes, for example, pre-drilled ones, in the kitchen front 12 through which the pin-shaped elements 24 can be guided.

[0151] It is particularly possible that at least one of the pin-shaped elements 24 is hollow, in particular in order to guide the cable 21 of the circuit board 20 to the hob system 1.

[0152] The fixing means 26 comprises a support element 27 and a nut 28. The nut 28 can in particular be designed as a union nut.

[0153] The support element 27 has several receptacles in which the pin-shaped elements 24 can be mounted so that they can move in the axial direction. The support element 27 serves, in particular, to immobilize the pin-shaped elements 24 in the radial direction. This prevents the pin-shaped elements 24 from being bent inward, i.e., toward the center of the circular ring of the fastening element 23.

[0154] The nut 28, in particular, has at least one fixing threaded section 29. It is particularly possible for the nut 28 to have more than one fixing threaded section 29. The nut 28, in particular, has as many fixing threaded sections 29 as the pin-shaped elements 24 have partially threaded sections 25. The fixing threaded sections 29 are, in particular, designed such that they interact with the partially threaded sections 25 to securely fasten the control knob 3 to the furniture front 12.

[0155] The fastening device 14 further comprises three screws 30 with which the operating element 13 can be connected to the fastening element 23 in a force-locking manner.

[0156] The operating device 3, in particular the operating element 13 and the fastening device 14, has a central recess 31a. The central recess 31a is formed on the front of the operating device 3 such that the kitchen furniture 11, in particular the furniture front 12, is uncovered by the operating device 3 in a front view.

[0157] The central recess 31a is preferably circumferentially delimited, in particular enclosed, by the operating device 3, in particular the operating element 13 and / or the fastening device 14. For this purpose, the operating device 3, in particular the operating element 13 and / or the fastening device 14, can be designed to be annular, in particular circular, at least in sections.

[0158] Based on the Fig. 4 to 5B show a further variant of the control knob 3. According to this variant, the control knob 3 comprises the control element 13, which is identical to the control element 13 of the control knob 3 of the first variant, and a fastening device 32.

[0159] The fastening device 32 comprises a guide ring 33, at least two pin-shaped elements 34 and a fixing means 35.

[0160] The guide ring 33 is circular in shape and has at least two receptacles into which the pin-shaped elements 34 engage in order to fasten the guide ring 33 in interaction with the fixing means 35 in a form-fitting manner to the furniture front 12.

[0161] It is also possible in this variant to use more than two pin-shaped elements 34. The pin-shaped elements 34 can in particular comprise at least two elements which are not Fig. 6 to 8. In particular, a first partial thread section can be used in conjunction with a thread not shown in the Fig. 6 to 8, cooperate to connect the guide ring 33 in a force-fitting manner to the pin-shaped elements 34.

[0162] The furniture front 12 has through openings, for example as through holes, through which the pin-shaped elements 34 and at least partially the receptacles of the guide ring 33 are guided.

[0163] The second partially threaded section of the pin-shaped elements 34 serves in particular to cooperate with the fixing means 35 in order to fasten the guide ring 33, and thus also the operating element 13 and the operating knob 3, to the furniture front 12 in a force-fitting manner.

[0164] The fixing means 35 comprises in particular a nut 36 and a washer 37. The nut 36 comprises a fixing threaded section 29.

[0165] To attach the guide ring 33 to the furniture front 12, the washer 37 and then the nut 36 can first be attached, in particular screwed, to the end of the pin-shaped element 34 facing away from the operating element 13. The washers 37 serve, in particular, to ensure a particularly uniform force transmission from the nuts 36 to the furniture front 12.

[0166] The guide ring 33 also has a through-opening to guide the cable 22 from the circuit board 20 to the hob system 1.

[0167] Both in the first variant ( Fig. 2 to 3B) as well as in the second variant ( Fig. 4 to 5B), the circuit board 20 rests directly on the guide ring 33, or the fastening element 23. In particular, the circuit board 20 and the guide ring 33, or the fastening element 23, are arranged without any axial spacing from each other. In Fig. 9 shows an alternative design of the guide ring 33 and the plate 20. It should be noted in particular that the following explanations are made with reference to the Fig. 9 not only concern the arrangement of a circuit board 20 and a guide ring 33 to each other, but can also be transferred to the relative positioning of a circuit board 20 and a fastening element 23 to each other.

[0168] The guide ring 33 comprises at least one elevation 39. In particular, the guide ring 33 comprises three elevations 39. It is also possible for the guide ring 33 to have more than three elevations 39.

[0169] The circuit board 20 is arranged on the elevations 39, so that a distance d is established between the guide ring 33 and the circuit board 20. The following can apply in particular to the distance d: 1 mm ≤ d ≤ 10 mm, in particular 2 mm ≤ d ≤ 9 mm, in particular 3 mm ≤ d ≤ 7 mm and in particular d = 5 mm.

[0170] Due to the distance d, light from illumination means 38, which may be arranged on or at the circular circuit board 20, can be reflected, in particular diffusely reflected. In this way, the radiation characteristics of the illumination means 38 and in particular the illumination of the control knob 3 can be improved. For example, the operating device 3, in particular the circuit board 20 and / or the fastening element 23, can have a reflector for light, in particular the light emitted by the illumination means 38.

[0171] The operating element 13 has means 40 for receiving the pin-shaped elements 34, which are preferably part of a housing 42 of the operating element 13. Furthermore, according to this variant, means for detecting the angle of rotation of the toggle cover 15 and means for rotatably supporting the toggle cover 15 are already integrated into the housing 42. Such a housing 42 can also be combined, in particular, with a fastening element 23 according to the above variants.

[0172] In the Fig. Figures 6 to 9B show two further variants of a control knob 3. The control knob 3 comprises a control element 13 and a fastening device 41.

[0173] The fastening device 41 comprises, according to the Fig. 6 to 9B, the pin-shaped elements 34 and fixing means 35, the exact effect of which can already be seen with reference to the Fig. 4 to 5B. According to this variant, the fastening device 41 does not comprise a guide ring, since the means for receiving the pin-shaped elements 34 are already integrated into the housing 42.

[0174] According to another study published in Fig. In the variant of the control knob 3 shown in Figures 10 to 11B, the control knob 3 comprises a fastening device 43. The fastening device 43 comprises at least two pin-shaped elements 44, at least two hollow wall boxes 45 and at least two retaining clips 45'.

[0175] The pin-shaped elements 44 are in particular directly connected to the housing 19 of the operating element 13.

[0176] The fastening device 43 comprises at least two cavity wall boxes 45, which are inserted into prefabricated through-openings in the furniture front 12. The pin-shaped elements 44 are arranged in the cavity wall boxes 45 and are each clamped into the cavity wall boxes 45 by means of the retaining clip 45', thereby securing them in a form-fitting manner. Furthermore, the fastening device 43 comprises a cable duct 46, which can be made of Plexiglas, for example. The cable duct 46 serves to guide the cables 21 from the circuit board 20 to the cooktop system 1.

[0177] According to another study published in Fig. 12 to 13B, the control knob 3 comprises a fastening device 47, at least two pin-shaped elements 48 with a toothing 49 and a fixing means 50.

[0178] The pin-shaped elements 48 are designed as flat strips. The toothing 49 is arranged in particular on the inside of the pin-shaped elements 48, i.e., on the side associated with the center of the annular control knob 3. It is possible for the fastening device 47 to have more than two pin-shaped elements 48.

[0179] In the present case, the fixing means 50 is designed as a strip-shaped, curved counterholder and / or as a spring, in particular a wave spring. Other configurations of the fixing means 50 are also possible. The fixing means 50 can, for example, be formed as a single piece or consist of multiple parts.

[0180] The fixing means 50 comprises at least one receptacle 51 in which a locking element 52 is arranged. The locking element 52 is preferably designed as a spring tongue, in particular in the manner of the spring tongue of a cable tie. It is particularly possible for the fixing means 50 to have as many receptacles 51 with associated locking elements 52 as there are pin-shaped elements 48.

[0181] The locking element serves to cooperate with the toothing 49 of the pin-shaped element 48 and to hold the pin-shaped element 48 in a form-fitting manner in the receptacle. The basic operating principle of the pin-shaped elements 48 and the fixing means 50 corresponds to that of a commercially available cable tie. In particular, it is possible to push the pin-shaped elements as far as desired into the receptacle 51 along the direction running from the control knob 3 to the furniture front 12. Pulling the pin-shaped elements 48 out of the receptacle 51 in the opposite direction is prevented by the locking element 52. In this way, the control knob 3 can be attached to the furniture front 12 securely and, in particular, in a time-efficient manner. In particular, it is possible for the fixing means 50 to be inserted over, not into, the Fig. 13 and Fig. 14, for adjusting the locking element 52 such that the pin-shaped elements 48 can be pulled out of the receptacles 51.

[0182] In this way, the fastening of the control knob 3 to the furniture front 12 can be easily reversible. Such a reversible fastening of the control knob 3 to the furniture front 12 enables, in particular, particularly time-efficient maintenance and / or installation of the cooktop system 1 and, in particular, of the control knob 3.

[0183] According to another study published in Fig. In the variant of the control knob 3 shown in Figures 14 to 15B, the control knob 3 comprises a fastening device 53.

[0184] The fastening device 53 comprises a pin-shaped element 55 and a lock nut 56. In the present variant, the pin-shaped element 55 has a diameter that is essentially in the range of the diameter of the control knob 3. The pin-shaped element is, in particular, directly connected to the housing 19 of the control knob 3.

[0185] To attach the control knob 3, a hole must be made in the furniture front 12, which serves to accommodate the pin-shaped element 55. The hole has a diameter that is essentially in the range of the diameter of the control knob 3. The pin-shaped element then has a partially threaded section 57, which cooperates with a fixing threaded section 57a ​​of the lock nut 56 to attach the control knob 3 to the furniture front 12.

[0186] In the present variant, the cable 21 of the circuit board 20 is routed directly within the one pin-shaped element 55 from the circuit board 20 to the hob system 1. The circuit board 20 is circular in shape.

[0187] According to another study based on the Fig. 16 to 17B, the circuit board 20 is circular in shape. Otherwise, the structure of the control knob 3 essentially corresponds to that of the Fig. 14 to 15B disclosed control knob 3.

[0188] According to another study published in Fig. In the variant of the control knob 3 shown in Figures 18 to 19B, the control knob 3 has a fastening device 58.

[0189] The fastening device 58 comprises a fastening element 59, a pin-shaped element 60, a fastening disc 61 and a fastening toggle 62.

[0190] The fastening element 59 has a receptacle for supporting the pin-shaped element 60. The components of the operating element 13, in particular the housing 19, are directly connected to the fastening element 59. Such a connection can be made, for example, by means of Fig. 17 and Fig. 18 screws shown.

[0191] The pin-shaped element 60 is centrally connected to the fastening element 59. This means that the pin-shaped element is arranged in the region of the center point of the circular control knob 3. The pin-shaped element extends axially through the furniture front 12.

[0192] For this purpose, a through hole must be made in the furniture front 12, which, as already described for the Fig. 15 and Fig. 16, has a diameter which is essentially in the range of the diameter of the control knob 3, since the fastening element 59 is also arranged, at least partially, within this through opening.

[0193] The pin-shaped element 60 penetrates a receptacle of the mounting disc 61 on the side of the furniture front 12 facing away from the control element 13 and is secured by tightening the fastening knob 62. By tightening the fastening knob 62 and the interaction of the fastening disc 61 and the fastening element 59, the control knob 3 is firmly attached to the furniture front 12. The cable 21 of the circuit board 20 is routed directly into the aforementioned through-hole.

[0194] In principle, different variants of bearing and locking concepts for the toggle cover 15 are possible and provided.

[0195] The Fig. The variant shown in Figure 19A essentially corresponds to the variants of the operating device 13 already discussed, with reference to the previous figures.

[0196] For example, the control knob 3 can comprise a control element 13 in which the knob cover 15 is locked and / or supported by means of axial ball thrust pieces. The ball thrust pieces can be used to determine the angle of rotation of the knob cover 15, and thus the operation of the control knob 3, and to transmit this information to the cooktop system 1 via corresponding electronic components 22 on the circuit board 20.

[0197] The locking of a rotation angle when rotating the toggle cover 15 can be achieved alternatively or additionally using magnets 18. The magnets 18 can form a magnetic bearing.

[0198] Radial ball thrust pieces can be used, on the one hand to support the toggle cover 15 and on the other hand to prevent the toggle cover 15 from twisting.

[0199] According to another study based on the Fig. 20 and Fig. In the variant of the operating device 3 described in Figure 21, it has a fastening device 63. This largely corresponds in construction to the fastening device 32, although other configurations, in particular according to the exemplary embodiments described above, are also possible.

[0200] What is special is that the operating device 3 has a light-guiding device 64 for guiding the light between the at least one illumination means 38 and at least one light exit surface 65a, 65b of the operating device 3. The light-guiding device 64 preferably comprises a first light-guiding body 66 and / or a masking means 67 and / or a second light-guiding body 68. The aforementioned components 66, 67, 68 are preferably annular.

[0201] The at least one light guide body 66, 68 can be designed as a light splitter, in particular in a switch-shaped and / or Y-shaped manner and / or as a prism. Preferably, the at least one light guide body 66, 68 comprises a translucent material, in particular a plastic.

[0202] The masking agent 67 comprises an impermeable plastic. The masking agent 67 preferably surrounds the at least one light-guiding body 66, 68 at least in sections, in particular over the majority of its surface.

[0203] Preferably, the light guide device 64 is designed such that the light emitted by the at least one illumination means 38 is emitted inwards and outwards, in particular with respect to an annular component of the operating device 3, in particular at the light exit surfaces 65a, 65b, in particular at the inner and / or outer surfaces of the light guide 68.

[0204] Other fastening concepts for an operating device 3 are also conceivable. According to one variant, the guide ring 33 can be attached directly to the kitchen front 12 by means of screws. The remaining operating element 13, in particular the housing 19, can then be attached to the guide ring 33 using a bayonet lock.

[0205] Alternatively, the guide ring 33 can be glued directly to the furniture front 12 by means of an adhesive layer 68.

[0206] The guide ring 33 and the housing 19 can be designed as a one-piece component, wherein the housing 19 can be attached directly to the furniture front 12 by means of the screws.

[0207] The housing 19 and the guide ring 33 can be designed as a one-piece component which is glued directly to the kitchen front 12 by means of an adhesive layer.

[0208] The control knobs 3 disclosed on the basis of the exemplary embodiments are only one possible alternative of control devices 3. The control device 3 according to the disclosure can alternatively or additionally have a touch-sensitive surface and / or a display element, in particular a screen, in particular a touch-sensitive screen, and / or at least one, in particular several buttons.

Claims

[1] comprising an operating device (3) for operating a hob system (1) 1.1 a control element (13) and 1.2 comprising a fastening device (14, 32, 41, 43, 47, 53, 58, 63) for fastening the control element (13) to a kitchen cabinet (11) 1.2.1 a plurality of pin-shaped elements (24, 34, 44, 48, 55, 60) and 1.2.2 a fixative (26, 35, 50), 1.3 wherein a majority of the pin-shaped elements (24, 34, 44, 48, 55, 60) each have a partial thread section (25, 57), 1.4 wherein the fixing means (26, 35, 50) has a nut (28, 36, 56) with one or more fixing thread sections (29) which interact with the partial thread sections (25, 57). [2] Operating device (3) according to claim 1, characterized by , that the partial thread sections (25, 57) together form sections of a single thread. [3] Operating device (3) according to claim 1, characterized by , that the partial thread sections (25, 57) are identically formed. [4] Operating device (3) according to one of claims 1 or 3, characterized by , that the nut (28, 36, 56) has a number and arrangement of fixing thread sections (29) that is appropriate to the number and arrangement of the partial thread sections (25, 57). [5] Operating device (3) according to any one of the preceding claims, characterized by , that the fastening device (14, 32, 41, 43, 47, 53, 58, 63) has at least one opening for a signal-transmitting element (21). [6] Operating device (3) according to claim 5, characterized by , that the implementation is formed in at least one of the pin-shaped elements (24, 34, 44, 48, 55, 60). [7] Operating device (3) according to one of the preceding claims, characterized by , that the fixing agent (26, 35, 50) has a support element (27) for supporting the pin-shaped elements (24, 34, 44, 48, 55, 60). [8] Operating device (3) according to claim 7, characterized by , that the support element (27) is designed to be resilient. [9] Operating device (3) according to claim 7, characterized by , that the nut (28, 36, 56) can be locked to the support element (27). [10] Operating device (3) according to claim 9, characterized by , that the nut (28, 36, 56) is rotatably mounted on the support element (27) relative to the support element (27). [11] Operating device (3) according to one of claims 9 to 10, characterized by , that the nut (28, 36, 56) is resiliently mounted on the support element (27) in the screwing direction. [12] Operating device (3) according to any one of the preceding claims, characterized by a central recess (31a) on the front of the operating device (3) which is designed such that the kitchen furniture (11) is not obscured by the operating device (3) in a front view. [13] Operating device (3) according to any one of the preceding claims, characterized by , that a rotatably mounted component of the control element (13), in particular the toggle cover (15), and / or a light guide element and / or the fastening device (14, 32, 41, 43, 47, 53, 58, 63) are designed in a ring shape. [14] Operating device (3) according to any one of the preceding claims, characterized by at least one lighting means (38) whose main direction of light emission points towards a rear side of the operating device (3). [15] Operating device (3) according to claim 14, characterized by at least one reflector for reflecting the light emitted by the at least one lighting device (38) towards a front of the operating device (3). [16] Hob system (1) with an operating device (3) according to one of the preceding claims.

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