EP2483601B1 - Household appliance - Google Patents

Household appliance Download PDF

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Publication number
EP2483601B1
EP2483601B1 EP10760652.7A EP10760652A EP2483601B1 EP 2483601 B1 EP2483601 B1 EP 2483601B1 EP 10760652 A EP10760652 A EP 10760652A EP 2483601 B1 EP2483601 B1 EP 2483601B1
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EP
European Patent Office
Prior art keywords
domestic appliance
operating
appliance apparatus
operating element
unit
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Application number
EP10760652.7A
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German (de)
French (fr)
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EP2483601A1 (en
Inventor
Johann Huber
Roman Makhtyuk
Andreas Marbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2483601A1 publication Critical patent/EP2483601A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates

Definitions

  • the invention relates to a domestic appliance device according to the preamble of claim 1.
  • a household appliance with an operating device known.
  • the operating device has a trough frame, which forms a diaphragm and in which switch are recessed.
  • the operating device has a rotary knob.
  • the rotary knob is mounted on a cooking surface without axis, shaftless and non-destructively removable and magnetically attached.
  • the publication DE 44 32 399 C2 discloses a switch having a circumferentially rotatable, circular rotor and with a depending on the angular position of the rotor switching commands issuing stator, wherein the rotor and stator are separated by an operating surface of a device, in particular a household appliance, wherein the rotor housing part at least a arranged in the edge region of the permanent magnet includes, which acts on at least one located in the stator, the edge region of the housing part associated with magnetically sensitive switching element.
  • the rotor may be magnetically attached to a metallic control panel.
  • the publication EP 0 797 227 A2 discloses a cooktop apparatus having a control surface for supporting a control element.
  • the operating element has a sheet-metal part and a plurality of permanent magnets which are arranged below the sheet-metal part on the hotplate and under the hotplate and which connect the pane to the sheet-metal part and with a sensor unit.
  • the disc has a coding which senses the sensor unit and thereby detects a rotational position of the operating element.
  • the publication DE 102 29 629 A1 discloses a device for controlling electrical devices, wherein the device comprises a sensor device and a control element which by means of magnetic force at an operating position by means of a holding device in the form of a magnetically active metal star, which is arranged under the operating position of the operating element is held.
  • the object of the invention is in particular to provide a generic device with improved properties in terms of a simple design and improved sensitivity.
  • the object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
  • the invention is based on a domestic appliance device, in particular a hob device, with at least one operating element contact surface on which a functionally coupled operating element rests in at least one operating state. It is proposed that the domestic appliance device has at least one holding plate element which, in the operating state, has a main magnetic fastening force exerts the control.
  • a “functionally coupled state” of a control element should in particular be understood to mean an operating state of the operating element in which an operator can perform an operating operation by actuating the operating element, which is in particular pressing and / or rotating and / or sliding the operating element ,
  • a "control contact surface” is to be understood in particular a surface on which the operating means rests in at least one operating state and relative to which the operating element is preferably mounted movably.
  • a “holding plate element” is to be understood in particular as a sheet metal element having a thickness of less than 10 mm, preferably less than 3 mm and particularly preferably less than 2 mm, which exerts a fastening force on the operating element in at least one operating state.
  • the holding plate element in at least one operating state exerts a magnetic "main fastening force" on the operating element
  • the holding plate element exerts a magnetic force on the operating element in the operating state, which is greater than any other magnetic force acting on the operating element and which is preferably larger than any other force acting on the operating element force, which differs from the weight of the operating element, the force is particularly preferably greater than the weight of the operating element.
  • the retaining plate element has at least one partial area in an unevenness.
  • the fact that the holding plate element has a "unevenness" in at least one subregion should be understood in particular to mean that the holding plate element has a shape which differs from a completely flat shape and which in particular has an elevation and / or a bulge and / or a depression and / or has a recess and / or a passage opening. As a result, a high-quality functionality can be achieved.
  • a small distance between the holding plate element and a magnetic element the operating element can be achieved, whereby it can be achieved that a magnetic field generated and located outside of the holding plate member and the operating means magnetic field has a low strength, so that a sensor element which is provided for registering performed with the control operating movements, only a small Measurements of magnetic interference is disturbed.
  • a haptically comfortable usability of the operating element can be achieved.
  • the unevenness is rotationally symmetric, whereby a comfortable usability can be achieved.
  • the operating element is easy to handle, while the main fastening force acts on the operating element.
  • the holding plate element has at least one recess. As a result, a simple construction can be achieved.
  • the holding plate element is formed by electrical steel.
  • Electrical sheet metal is to be understood in particular sheet metal made of an iron-silicon alloy, which is described in more detail in the standards DIN EN 10106: 2007-11 and DIN EN 10107: 2005-10. This allows a cost-effective design can be achieved.
  • the domestic appliance device has at least one sensor unit which is arranged at least partially between the holding plate element and the operating element contact surface.
  • the sensor unit is arranged "at least partially between" the holding plate element and the operating element contact surface, it should be understood in particular that there is at least one straight line which intersects the holding plate element at a first point, cuts the sensor unit at a second point and engages the operating element contact surface a third point intersects and the second point is arranged on the straight line between the first point and the third point.
  • This allows a precise operation can be achieved.
  • the sensor unit can precisely sense a magnetic field emanating from the operating element.
  • the domestic appliance device has at least one sensor unit and at least one circuit board unit, to which the sensor unit is attached.
  • a "board unit” is to be understood in particular a unit which has a circuit board and directly attached to the board components.
  • cable-shaped electrical line means which are provided for conducting electrical signals from the sensor unit to an evaluation unit, can be saved.
  • the board unit has at least one evaluation unit, which is provided to evaluate a sensor signal generated by the sensor unit.
  • An "evaluation unit which is provided for an evaluation of the sensing signal” should in particular be understood to mean a unit which, in at least one operating operation, obtains from the sensing signal a control signal for controlling an electronic structural unit and in particular a cooking zone. This allows a particularly compact design can be achieved.
  • the holding plate element forms an amplifying unit, which is intended to amplify a magnetic field characteristic to be sensed.
  • An "amplification unit which is provided for amplifying a magnetic field parameter to be sensed” should be understood to mean, in particular, a unit which, in its presence, causes a sensor unit to sense a value of the magnetic field parameter which is greater in magnitude than in the case in which the amplification unit disassembles is.
  • By "intended” is intended to be understood in particular specially designed and / or equipped. This allows a cost-effective design can be achieved. In particular, a cost-effective design of the sensor unit can be achieved.
  • the domestic appliance device has at least one diaphragm unit which forms a receiving region in which the retaining plate element is at least partially arranged in at least one operating state. This can be a space-saving design can be achieved.
  • FIG. 1 shows a cooking appliance designed as a household appliance, which has a domestic appliance device according to the invention, which is designed as a hob device.
  • the domestic appliance device has an operator contact surface 10 (FIG. Figures 2 and 3 ), on which in an operating state a functionally coupled control element 12 of the domestic appliance device is applied.
  • the operating element 12 has a disc shape.
  • a holding plate element 14 of the domestic appliance device exerts a main magnetic fastening force on the operating element 12 in the operating state ( FIGS. 2 to 5 ).
  • the retaining plate member 14 is formed of electrical steel and is attracted in the operating state of a permanent magnet 36 of the control element 12 with a force which is the same size as the main fastening force but this is opposite in their direction of action.
  • the retaining plate element 14 has in a portion 16 on a bump 18, which is an increase and which is arranged in the operating state below the permanent magnet.
  • the unevenness 18 is produced by embossing.
  • the unevenness 18 is rotationally symmetrical with respect to an axis 38 about which the operating element 12 is rotated during an operating procedure.
  • the holding plate element 14 in a region of the unevenness 18 has a recess 20, which is formed as a passage opening.
  • the passage opening is a bore and is circular and rotationally symmetrical with respect to the axis 38. Due to the spatial extent of the recess 20 can be adjusted in a production of the holding plate member 14, how large is the main fastening force.
  • the operating element has a magnetic field guiding element 34 formed in a star-shaped manner from sheet metal, in which a field generated by the permanent magnet 36 is conducted ( FIG. 5 ). Field lines of this field extend from the permanent magnet 36 through an arm 40 of the magnetic field guiding element 34, penetrate a first sensor unit 22 or a second sensor unit 44 of the domestic appliance device and are forwarded by the holding plate element 14 up to the permanent magnet 36. As a result, a slight influence of interference fields on the sensor units 22, 44 and a shielding of the sensor units 22, 44 can be achieved.
  • the retaining plate element 14 acts as an amplification unit, which amplifies the magentic field strength to be sensed by the first sensor unit 22.
  • the holding plate element 14 acts as an amplifying unit, which amplifies the magentic field strength to be sensed by the second sensor unit 44.
  • the sensor units 22, 44 are arranged between the holding plate element 14 and the operating element 12 and provided to determine magnetic field strengths by means of the magnetoresistive effect.
  • a board of a board unit 24 of the home appliance device is a support for the sensor units 22, 44, wherein the sensor units 22, 44 are attached to the board.
  • the board unit 24 has an evaluation unit 26, which evaluates sensor signals generated by the sensor units 22, 44.
  • the sensing signals have, as information, a time profile of the two magnetic field strengths measured by the sensor units 22, 44, by means of which the evaluation unit 26 concludes a movement of the operating element 12 and in particular a rotation of the operating element 12 in a specific direction.
  • the domestic appliance device has a diaphragm unit 28, which forms a receiving region 30, in which the retaining plate element 14 is arranged in the operating state.
  • the diaphragm unit 28 is integrally formed of aluminum and has a side contour 32 which is arranged on a front side of the diaphragm unit 28.
  • the side contour 32 forms, with respect to a depth extension direction 42 of the cooktop apparatus, an end portion of the aperture unit 28, which faces an operator in an operation.
  • the control element contact surface 10 is formed by the aperture unit 28.
  • the operating element 12 protrudes in the operating state in an opposite direction of the depth extension direction 42 beyond the side contour 32.
  • the retaining plate member 14 has tabs 48, which serve for an adjustment of the retaining plate member 14 on the aperture unit during assembly ( FIG. 4 ).
  • the board unit 24 has a sensor 50, which is provided to sense a magnetic field generated by the permanent magnet 36 and thereby determine whether the operating element 12 is placed on the control element contact surface 10 or not.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Switches With Compound Operations (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Cookers (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Description

Die Erfindung geht aus von einer Hausgerätvorrichtung nach dem Oberbegriff des Anspruchs 1.
Aus der Druckschrift DE 10 2006 048 418 A1 ist ein Hausgerät mit einer Bedienvorrichtung bekannt. Die Bedienvorrichtung weist einen Muldenrahmen auf, welcher eine Blende bildet und in welchen Schalter eingelassen sind. Ferner weist die Bedienvorrichtung einen Drehknebel auf. Der Drehknebel ist von einer Kochfläche achsenlos, wellenlos und zerstörungsfrei ablösbar gelagert und magnetisch befestigt.
Die Druckschrift DE 44 32 399 C2 offenbart einen Schalter mit einem in Umfangsrichtung drehbaren, kreisförmigen Rotor und mit einem in Abhängigkeit von der Winkelstellung des Rotors Schaltbefehle abgebenden Stator, bei dem Rotor und Stator durch eine Bedienfläche eines Geräts, insbesondere eines Haushaltgeräts, getrennt sind, wobei der Rotor ein Gehäuseteil mit mindestens einem in dessen Randbereich angeordneten Permanentmagneten beinhaltet, der auf mindestens ein im Stator befindliches, dem Randbereich des Gehäuseteils zugeordnetes magnetempfindliches Schaltelement wirkt. Der Rotor kann magnetisch an einer metallischen Bedienblende befestigt sein.
Die Druckschrift EP 0 797 227 A2 offenbart eine Kochfeldvorrichtung mit einer Bedienelementauflagefläche, an welcher ein Bedienelement angeordnet werden kann. Das Bedienelement weist ein Blechteil und mehrere unterhalb des Blechteils auf der Kochplatte sowie unter der Kochplatte auf einer Scheibe angeordnete Permanentmagnete, die die Scheibe mit dem Blechteil verbinden, sowie mit einer Sensoreinheit auf. Die Scheibe weist eine Kodierung auf, welche die Sensoreinheit sensiert und dadurch eine Drehposition des Bedienelements feststellt.
Die Druckschrift DE 102 29 629 A1 offenbart eine Vorrichtung zur Steuerung von elektrischen Geräten, wobei die Vorrichtung eine Sensoreinrichtung und ein Bedienelement aufweist, welches mittels Magnetkraft an einer Betriebsposition mittels einer Halteeinrichtung in Form eines magnetisch aktiven Metallsterns, welcher unter der Betriebsposition des Bedienelements angeordnet ist, gehalten wird.
Die Aufgabe der Erfindung besteht insbesondere darin, eine gattungsgemäße Vorrichtung mit verbesserten Eigenschaften hinsichtlich einer einfachen Bauweise und einer verbesserten Sensierbarkeit bereitzustellen. Die Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst, während vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung den Unteransprüchen entnommen werden können.
Die Erfindung geht aus von einer Hausgerätvorrichtung, insbesondere Kochfeldvorrichtung, mit wenigstens einer Bedienelementanlagefläche, an welcher in wenigstens einem Betriebszustand ein funktionsmäßig gekoppeltes Bedienelement anliegt.
Es wird vorgeschlagen, dass die Hausgerätvorrichtung wenigstens ein Halteblechelement aufweist, welches in dem Betriebszustand eine magnetische Hauptbefestigungskraft auf das Bedienelement ausübt. Unter einem "funktionsmäßig gekoppelten Zustand" eines Bedienelements soll insbesondere ein Betriebszustand des Bedienelements verstanden werden, in welchem ein Bediener durch ein Betätigen des Bedienelements, welches insbesondere ein Drücken und/oder ein Drehen und/oder ein Schieben des Bedienelements ist, einen Bedienvorgang durchführen kann. Unter einer "Bedienelementanlagefläche" soll insbesondere eine Fläche verstanden werden, an welcher das Bedienmittel in wenigstens einem Betriebszustand anliegt und relativ zu welcher das Bedienelement vorzugsweise beweglich gelagert ist. Unter einem "Halteblechelement" soll insbesondere ein Blechelement mit einer Dicke von weniger als 10 mm, vorzugsweise weniger als 3 mm und besonders bevorzugt weniger als 2 mm verstanden werden, welches in wenigstens einem Betriebszustand eine Befestigungskraft auf das Bedienelement ausübt. Darunter, dass das Halteblechelement in wenigstens einem Betriebszustand eine magnetische "Hauptbefestigungskraft" auf das Bedienelement ausübt, soll insbesondere verstanden werden, dass das Halteblechelement in dem Betriebszustand eine magnetische Kraft auf das Bedienelement ausübt, welche größer ist als jede andere auf das Bedienelement wirkende magnetische Kraft und welche vorzugsweise größer ist als jede andere auf das Bedienelement wirkende Kraft, die sich von der Gewichtskraft des Bedienelements unterscheidet, wobei die Kraft besonders bevorzugt größer ist als die Gewichtskraft des Bedienelements. Mit einer erfindungsgemäßen Ausgestaltung kann eine einfache Bauweise erreicht werden. Insbesondere können Bauteile eingespart werden. Im Besonderen kann erreicht werden, dass auf Spulen und Permanentmagnete zur Erzeugung einer auf das Bedienelement wirkenden Anziehungskraft verzichtet werden kann. Ferner kann insbesondere erreicht werden, dass ein geschlossener Magnetkreis mittels einem Permanentmagneten des Bedienelements und dem Halteblechelement gebildet wird, der Magnetfeldlinien durch eine Sensoreinheit führt.The invention relates to a domestic appliance device according to the preamble of claim 1.
From the publication DE 10 2006 048 418 A1 is a household appliance with an operating device known. The operating device has a trough frame, which forms a diaphragm and in which switch are recessed. Furthermore, the operating device has a rotary knob. The rotary knob is mounted on a cooking surface without axis, shaftless and non-destructively removable and magnetically attached.
The publication DE 44 32 399 C2 discloses a switch having a circumferentially rotatable, circular rotor and with a depending on the angular position of the rotor switching commands issuing stator, wherein the rotor and stator are separated by an operating surface of a device, in particular a household appliance, wherein the rotor housing part at least a arranged in the edge region of the permanent magnet includes, which acts on at least one located in the stator, the edge region of the housing part associated with magnetically sensitive switching element. The rotor may be magnetically attached to a metallic control panel.
The publication EP 0 797 227 A2 discloses a cooktop apparatus having a control surface for supporting a control element. The operating element has a sheet-metal part and a plurality of permanent magnets which are arranged below the sheet-metal part on the hotplate and under the hotplate and which connect the pane to the sheet-metal part and with a sensor unit. The disc has a coding which senses the sensor unit and thereby detects a rotational position of the operating element.
The publication DE 102 29 629 A1 discloses a device for controlling electrical devices, wherein the device comprises a sensor device and a control element which by means of magnetic force at an operating position by means of a holding device in the form of a magnetically active metal star, which is arranged under the operating position of the operating element is held.
The object of the invention is in particular to provide a generic device with improved properties in terms of a simple design and improved sensitivity. The object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
The invention is based on a domestic appliance device, in particular a hob device, with at least one operating element contact surface on which a functionally coupled operating element rests in at least one operating state.
It is proposed that the domestic appliance device has at least one holding plate element which, in the operating state, has a main magnetic fastening force exerts the control. A "functionally coupled state" of a control element should in particular be understood to mean an operating state of the operating element in which an operator can perform an operating operation by actuating the operating element, which is in particular pressing and / or rotating and / or sliding the operating element , A "control contact surface" is to be understood in particular a surface on which the operating means rests in at least one operating state and relative to which the operating element is preferably mounted movably. A "holding plate element" is to be understood in particular as a sheet metal element having a thickness of less than 10 mm, preferably less than 3 mm and particularly preferably less than 2 mm, which exerts a fastening force on the operating element in at least one operating state. By the fact that the holding plate element in at least one operating state exerts a magnetic "main fastening force" on the operating element, it should be understood in particular that the holding plate element exerts a magnetic force on the operating element in the operating state, which is greater than any other magnetic force acting on the operating element and which is preferably larger than any other force acting on the operating element force, which differs from the weight of the operating element, the force is particularly preferably greater than the weight of the operating element. With an embodiment according to the invention, a simple construction can be achieved. In particular, components can be saved. In particular, it can be achieved that it is possible to dispense with coils and permanent magnets for generating an attraction force acting on the operating element. Furthermore, it can be achieved, in particular, that a closed magnetic circuit is formed by means of a permanent magnet of the operating element and the retaining plate element, which guides magnetic field lines through a sensor unit.

Ferner wird vorgeschlagen, dass das Halteblechelement in wenigstens einem Teilbereich eine Unebenheit aufweist. Darunter, dass das Halteblechelement in wenigstens einem Teilbereich eine "Unebenheit" aufweist, soll insbesondere verstanden werden, dass das Halteblechelement eine Form aufweist, welche sich von einer vollständig ebenen Form unterscheidet und welche insbesondere eine Erhöhung und/oder eine Ausbuchtung und/oder eine Vertiefung und/oder eine Ausnehmung und/oder eine Durchgangsöffnung aufweist. Hierdurch kann eine hochwertige Funktionsweise erreicht werden. Insbesondere kann ein geringer Abstand zwischen dem Halteblechelement und einem Magnetelement des Bedienelements erreicht werden, wodurch erreicht werden kann, dass ein von dem Magnetelement erzeugtes und außerhalb des Halteblechelements und des Bedienmittels befindliches Magnetfeld eine geringe Stärke aufweist, so dass ein Sensorelement, welches zur Registrierung von mit dem Bedienelement durchgeführten Bedienbewegungen vorgesehen ist, nur in geringem Maße von magnetischen Störfeldern gestört wird. Insbesondere kann eine haptisch komfortable Benutzbarkeit des Bedienelements erreicht werden.
Vorzugsweise ist die Unebenheit rotationssymmetrisch, wodurch eine komfortable Benutzbarkeit erreicht werden kann. Insbesondere kann erreicht werden, dass das Bedienelement komfortabel handhabbar ist, während die Hauptbefestigungskraft auf das Bedienelement wirkt.
Vorzugsweise weist das Halteblechelement wenigstens eine Ausnehmung auf. Hierdurch kann eine einfache Bauweise erreicht werden.
In einer bevorzugten Ausgestaltung der Erfindung ist das Halteblechelement durch Elektroblech gebildet. Unter "Elektroblech" soll insbesondere Blech aus einer Eisen-Silizium-Legierung verstanden werden, das in den Normen DIN EN 10106: 2007-11 und DIN EN 10107: 2005-10 näher beschrieben ist. Hierdurch kann eine kostengünstige Bauweise erreicht werden.It is also proposed that the retaining plate element has at least one partial area in an unevenness. The fact that the holding plate element has a "unevenness" in at least one subregion should be understood in particular to mean that the holding plate element has a shape which differs from a completely flat shape and which in particular has an elevation and / or a bulge and / or a depression and / or has a recess and / or a passage opening. As a result, a high-quality functionality can be achieved. In particular, a small distance between the holding plate element and a magnetic element the operating element can be achieved, whereby it can be achieved that a magnetic field generated and located outside of the holding plate member and the operating means magnetic field has a low strength, so that a sensor element which is provided for registering performed with the control operating movements, only a small Measurements of magnetic interference is disturbed. In particular, a haptically comfortable usability of the operating element can be achieved.
Preferably, the unevenness is rotationally symmetric, whereby a comfortable usability can be achieved. In particular, it can be achieved that the operating element is easy to handle, while the main fastening force acts on the operating element.
Preferably, the holding plate element has at least one recess. As a result, a simple construction can be achieved.
In a preferred embodiment of the invention, the holding plate element is formed by electrical steel. "Electric sheet metal" is to be understood in particular sheet metal made of an iron-silicon alloy, which is described in more detail in the standards DIN EN 10106: 2007-11 and DIN EN 10107: 2005-10. This allows a cost-effective design can be achieved.

Außerdem wird erfindungsgemäß vorgeschlagen, dass die Hausgerätvorrichtung wenigstens eine Sensoreinheit aufweist, die zumindest teilweise zwischen dem Halteblechelement und der Bedienelementanlagefläche angeordnet ist. Darunter, dass die Sensoreinheit "zumindest teilweise zwischen" dem Halteblechelement und der Bedienelementanlagefläche angeordnet ist, soll insbesondere verstanden werden, dass es wenigstens eine Gerade gibt, welche das Halteblechelement in einem ersten Punkt schneidet, die Sensoreinheit in einem zweiten Punkt schneidet und die Bedienelementanlagefläche in einem dritten Punkt schneidet und der zweite Punkt auf der Gerade zwischen dem ersten Punkt und dem dritten Punkt angeordnet ist. Hierdurch kann eine präzise Funktionsweise erreicht werden. Insbesondere kann erreicht werden, dass die Sensoreinheit ein Magnetfeld, welches von dem Bedienelement ausgeht, präzise sensieren kann.It is also proposed according to the invention that the domestic appliance device has at least one sensor unit which is arranged at least partially between the holding plate element and the operating element contact surface. By the fact that the sensor unit is arranged "at least partially between" the holding plate element and the operating element contact surface, it should be understood in particular that there is at least one straight line which intersects the holding plate element at a first point, cuts the sensor unit at a second point and engages the operating element contact surface a third point intersects and the second point is arranged on the straight line between the first point and the third point. This allows a precise operation can be achieved. In particular, it can be achieved that the sensor unit can precisely sense a magnetic field emanating from the operating element.

Vorzugsweise weist die Hausgerätvorrichtung wenigstens eine Sensoreinheit und zumindest eine Platineneinheit auf, an welcher die Sensoreinheit befestigt ist. Unter einer "Platineneinheit" soll insbesondere eine Einheit verstanden werden, welche eine Platine und an der Platine unmittelbar befestigte Bauelemente aufweist. Hierdurch kann eine kompakte Bauweise erreicht werden. Insbesondere können kabelförmige elektrische Leitungsmittel, welche zu einer Leitung von elektrischen Signalen von der Sensoreinheit zu einer Auswertungseinheit vorgesehen sind, eingespart werden.Preferably, the domestic appliance device has at least one sensor unit and at least one circuit board unit, to which the sensor unit is attached. A "board unit" is to be understood in particular a unit which has a circuit board and directly attached to the board components. As a result, a compact design can be achieved. In particular, cable-shaped electrical line means, which are provided for conducting electrical signals from the sensor unit to an evaluation unit, can be saved.

Weiterhin wird vorgeschlagen, dass die Platineneinheit wenigstens eine Auswerteeinheit aufweist, welche dazu vorgesehen ist, ein von der Sensoreinheit erzeugtes Sensiersignal auszuwerten. Unter einer "Auswerteeinheit, welche zu einer Auswertung des Sensiersignals vorgesehen ist", soll insbesondere eine Einheit verstanden werden, welche bei wenigstens einem Betriebsvorgang aus dem Sensiersignal ein Steuersignal zur Steuerung einer elektronischen Baueinheit und insbesondere einer Kochzone erlangt. Hierdurch kann eine besonders kompakte Bauweise erreicht werden.Furthermore, it is proposed that the board unit has at least one evaluation unit, which is provided to evaluate a sensor signal generated by the sensor unit. An "evaluation unit which is provided for an evaluation of the sensing signal" should in particular be understood to mean a unit which, in at least one operating operation, obtains from the sensing signal a control signal for controlling an electronic structural unit and in particular a cooking zone. This allows a particularly compact design can be achieved.

Vorzugsweise bildet das Halteblechelement eine Verstärkungseinheit, welche dazu vorgesehen ist eine zu sensierende Magnetfeldkenngröße zu verstärken. Unter einer "Verstärkungseinheit, welche zu einem Verstärken einer zu sensierenden Magnetfeldkenngröße vorgesehen ist", soll insbesondere eine Einheit verstanden werden, welche bei Ihrem Vorhandensein bewirkt, dass eine Sensoreinheit einen betragsmäßig größeren Wert der Magnetfeldkenngröße sensiert als in demjenigen Fall, in welchem die Verstärkungseinheit demontiert ist. Unter "vorgesehen" soll insbesondere speziell ausgelegt und/oder ausgestattet verstanden werden. Damit kann eine kostengünstige Bauweise erreicht werden. Insbesondere kann eine kostengünstige Ausbildung der Sensoreinheit erzielt werden.Preferably, the holding plate element forms an amplifying unit, which is intended to amplify a magnetic field characteristic to be sensed. An "amplification unit which is provided for amplifying a magnetic field parameter to be sensed" should be understood to mean, in particular, a unit which, in its presence, causes a sensor unit to sense a value of the magnetic field parameter which is greater in magnitude than in the case in which the amplification unit disassembles is. By "intended" is intended to be understood in particular specially designed and / or equipped. This allows a cost-effective design can be achieved. In particular, a cost-effective design of the sensor unit can be achieved.

Ferner wird vorgeschlagen, dass die Hausgerätvorrichtung wenigstens eine Blendeneinheit aufweist, welche einen Aufnahmebereich bildet, in welchem das Halteblechelement in zumindest einem Betriebszustand wenigstens teilweise angeordnet ist. Hiermit kann eine Platz sparende Bauweise erreicht werden.Furthermore, it is proposed that the domestic appliance device has at least one diaphragm unit which forms a receiving region in which the retaining plate element is at least partially arranged in at least one operating state. This can be a space-saving design can be achieved.

Vorzugsweise weist die Blendeneinheit eine Seitenkontur auf, über welche das Bedienelement in dem Betriebszustand hinausragt. Damit kann eine ergonomisch hochwertige Bauweise erreicht werden. Insbesondere kann erreicht werden, dass ein Bediener das Bedienelement leicht bewegen kann. Die Hausgerätvorrichtung weist das Bedienelement auf, wobei das Bedienelement zumindest ein Magnetfeldleitelement aufweist. Hierdurch kann eine konstruktiv einfache Bauweise erreicht werden. Insbesondere kann bei einer präzisen Sensierbarkeit einer durch das Bedienelement durchgeführten Bedienbewegung eine einfache Bauweise erreicht werden.
Weiterhin wird vorgeschlagen, dass das Bedienelement wenigstens einen Permanentmagneten aufweist. Unter einem "Permanentmagneten" soll insbesondere ein Magnet mit einem statischen Magnetfeld aus einem Stück eines magnetisierbaren Materials verstanden werden, welcher in einer Anordnung, in welcher der Magnet frei von äußeren Einflüssen ist, sein statisches Magnetfeld auch nach wenigstens einer Stunde, vorzugsweise einem Monat und besondere bevorzugt einem Jahr behält. Hierdurch kann bei einer hohen Funktionalität eine kostengünstige Bauweise erreicht werden. Insbesondere kann erreicht werden, dass von dem Bedienelement durchgeführte Bedienbewegungen auf einfache Weise registrierbar sind.
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.
Es zeigen:

Fig. 1
eine Draufsicht auf ein Kochfeld mit einer Kochfeldvorrichtung,
Fig. 2
ein in Figur 1 angedeuteter II-II-Schnitt durch die Kochfeldvorrichtung,
Fig. 3
eine Draufsicht auf die Kochfeldvorrichtung in einem teilweise demontierten Zustand, wobei insbesondere nur ein Teil eines Bedienelements der Kochfeldvorrichtung dargestellt ist und wobei Laschen eines Halteblechelements nicht dargestellt sind,
Fig. 4
eine Ansicht eines Halteblechelements der Kochfeldvorrichtung und
Fig. 5
eine schematische Darstellung eines Verlaufs von Magnetfeldlinien.
Preferably, the diaphragm unit has a side contour, beyond which the operating element protrudes in the operating state. This can be an ergonomically high quality Construction can be achieved. In particular, it can be achieved that an operator can easily move the operating element. The domestic appliance device has the operating element, wherein the operating element has at least one magnetic field guiding element. This allows a structurally simple design can be achieved. In particular, a simple construction can be achieved with a precise sensibility of a control movement performed by the operating element.
Furthermore, it is proposed that the operating element has at least one permanent magnet. A "permanent magnet" is to be understood in particular a magnet with a static magnetic field of a piece of magnetizable material, which in an arrangement in which the magnet is free from external influences, its static magnetic field after at least one hour, preferably one month and special preferred reserves one year. As a result, with a high functionality, a cost-effective design can be achieved. In particular, it can be achieved that operating movements performed by the operating element can be registered in a simple manner.
Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Show it:
Fig. 1
a top view of a hob with a hob device,
Fig. 2
a in FIG. 1 indicated II-II section through the hob device,
Fig. 3
a top view of the hob device in a partially disassembled state, in particular, only a part of an operating element of the cooktop device is shown and wherein tabs of a holding plate element are not shown,
Fig. 4
a view of a retaining plate member of the hob device and
Fig. 5
a schematic representation of a course of magnetic field lines.

Figur 1 zeigt ein als Kochfeld ausgebildetes Hausgerät, welches eine erfindungsgemäße Hausgerätvorrichtung aufweist, die als Kochfeldvorrichtung ausgebildet ist. Die Hausgerätvorrichtung weist eine Bedienelementanlagefläche 10 auf (Figuren 2 und 3), an welcher in einem Betriebszustand ein funktionsmäßig gekoppeltes Bedienelement 12 der Hausgerätvorrichtung anliegt. Das Bedienelement 12 weist Scheibenform auf. Ein Halteblechelement 14 der Hausgerätvorrichtung übt in dem Betriebszustand eine magnetische Hauptbefestigungskraft auf das Bedienelement 12 aus (Figuren 2 bis 5). Das Halteblechelement 14 ist aus Elektroblech gebildet und wird in dem Betriebszustand von einem Permanentmagneten 36 des Bedienelements 12 mit einer Kraft angezogen, welche betragsmäßig gleich groß ist wie die Hauptbefestigungskraft aber dieser in ihrer Wirkrichtung entgegengesetzt ist. FIG. 1 shows a cooking appliance designed as a household appliance, which has a domestic appliance device according to the invention, which is designed as a hob device. The domestic appliance device has an operator contact surface 10 (FIG. Figures 2 and 3 ), on which in an operating state a functionally coupled control element 12 of the domestic appliance device is applied. The operating element 12 has a disc shape. A holding plate element 14 of the domestic appliance device exerts a main magnetic fastening force on the operating element 12 in the operating state ( FIGS. 2 to 5 ). The retaining plate member 14 is formed of electrical steel and is attracted in the operating state of a permanent magnet 36 of the control element 12 with a force which is the same size as the main fastening force but this is opposite in their direction of action.

Das Halteblechelement 14 weist in einem Teilbereich 16 eine Unebenheit 18 auf, welche eine Erhöhung ist und welche in dem Betriebszustand unterhalb des Permanentmagneten angeordnet ist. Die Unebenheit 18 ist durch Prägen hergestellt. Die Unebenheit 18 ist rotationssymmetrisch bezüglich einer Achse 38, um welche das Bedienelement 12 bei einem Bedienvorgang gedreht wird. Des Weiteren weist das Halteblechelement 14 in einem Bereich der Unebenheit 18 eine Ausnehmung 20 auf, die als Durchgangsöffnung ausgebildet ist. Die Durchgangsöffnung ist eine Bohrung und ist kreisförmig und rotationssymmetrisch bezüglich der Achse 38. Durch die räumliche Ausdehnung der Ausnehmung 20 kann bei einer Herstellung des Halteblechelements 14 eingestellt werden, wie groß die Hauptbefestigungskraft ist.The retaining plate element 14 has in a portion 16 on a bump 18, which is an increase and which is arranged in the operating state below the permanent magnet. The unevenness 18 is produced by embossing. The unevenness 18 is rotationally symmetrical with respect to an axis 38 about which the operating element 12 is rotated during an operating procedure. Furthermore, the holding plate element 14 in a region of the unevenness 18 has a recess 20, which is formed as a passage opening. The passage opening is a bore and is circular and rotationally symmetrical with respect to the axis 38. Due to the spatial extent of the recess 20 can be adjusted in a production of the holding plate member 14, how large is the main fastening force.

Ferner weist das Bedienelement ein sternförmig aus Blech gebildetes Magnetfeldleitelement 34 auf, in welchem ein von dem Permanentmagneten 36 erzeugtes Feld geleitet wird (Figur 5). Feldlinien dieses Feldes erstrecken sich von dem Permanentmagneten 36 durch einen Arm 40 des Magnetfeldleitelements 34, durchdringen eine erste Sensoreinheit 22 oder eine zweite Sensoreinheit 44 der Hausgerätvorrichtung und werden durch das Halteblechelement 14 bis zu dem Permanentmagneten 36 weitergeleitet. Dadurch kann ein geringer Einfluss von Störfeldern auf die Sensoreinheiten 22, 44 und eine Abschirmung der Sensoreinheiten 22, 44 erreicht werden. Ferner liegt hierdurch am Ort der ersten Sensoreinheit 22 eine bestimmte magnetische Feldstärke vor, welche betragsmäßig größer ist als eine magentische Feldstärke, welche am Ort der ersten Sensoreinheit 22 vorliegen würde, wenn die Hausgerätvorrichtung frei von dem Halteblechelement 14 wäre. Dadurch wirkt das Halteblechelement 14 als Verstärkungseinheit, welche die von der ersten Sensoreinheit 22 zu sensierende magentische Feldstärke verstärkt. Analog wirkt das Halteblechelement 14 als Verstärkungseinheit, welche die von der zweiten Sensoreinheit 44 zu sensierende magentische Feldstärke verstärkt.Furthermore, the operating element has a magnetic field guiding element 34 formed in a star-shaped manner from sheet metal, in which a field generated by the permanent magnet 36 is conducted ( FIG. 5 ). Field lines of this field extend from the permanent magnet 36 through an arm 40 of the magnetic field guiding element 34, penetrate a first sensor unit 22 or a second sensor unit 44 of the domestic appliance device and are forwarded by the holding plate element 14 up to the permanent magnet 36. As a result, a slight influence of interference fields on the sensor units 22, 44 and a shielding of the sensor units 22, 44 can be achieved. Furthermore, this results in the location of the first sensor unit 22 before a certain magnetic field strength, which in terms of amount is greater than a magentic field strength which would be present at the location of the first sensor unit 22 if the home appliance device were free of the holding plate element 14. As a result, the retaining plate element 14 acts as an amplification unit, which amplifies the magentic field strength to be sensed by the first sensor unit 22. Analogously, the holding plate element 14 acts as an amplifying unit, which amplifies the magentic field strength to be sensed by the second sensor unit 44.

Die Sensoreinheiten 22, 44 sind zwischen dem Halteblechelement 14 und dem Bedienelement 12 angeordnet und dazu vorgesehen, magnetische Feldstärken mittels des magnetoresistiven Effekts zu bestimmen. Eine Platine einer Platineneinheit 24 der Hausgerätvorrichtung ist ein Träger für die Sensoreinheiten 22, 44, wobei die Sensoreinheiten 22, 44 an der Platine befestigt sind. Die Platineneinheit 24 weist eine Auswerteeinheit 26 auf, welche von den Sensoreinheiten 22, 44 erzeugte Sensiersignale auswertet. Die Sensiersignale weisen als Information einen zeitlichen Verlauf der beiden von den Sensoreinheiten 22, 44 gemessenen magnetischen Feldstärken auf, mittels der die Auswerteeinheit 26 auf eine Bewegung des Bedienelements 12 und insbesondere eine Drehung des Bedienelements 12 in eine bestimmte Richtung schließt.The sensor units 22, 44 are arranged between the holding plate element 14 and the operating element 12 and provided to determine magnetic field strengths by means of the magnetoresistive effect. A board of a board unit 24 of the home appliance device is a support for the sensor units 22, 44, wherein the sensor units 22, 44 are attached to the board. The board unit 24 has an evaluation unit 26, which evaluates sensor signals generated by the sensor units 22, 44. The sensing signals have, as information, a time profile of the two magnetic field strengths measured by the sensor units 22, 44, by means of which the evaluation unit 26 concludes a movement of the operating element 12 and in particular a rotation of the operating element 12 in a specific direction.

Des Weiteren weist die Hausgerätvorrichtung eine Blendeneinheit 28 auf, die einen Aufnahmebereich 30 bildet, in dem das Halteblechelement 14 in dem Betriebszustand angeordnet ist. Die Blendeneinheit 28 ist einstückig aus Aluminium gebildet und weist eine Seitenkontur 32 auf, die an einer Vorderseite der Blendeneinheit 28 angeordnet ist. Die Seitenkontur 32 bildet bezüglich einer Tiefenerstreckungsrichtung 42 der Kochfeldvorrichtung einen Endbereich der Blendeneinheit 28, der bei einem Bedienvorgang einem Benutzer zugewandt ist. Die Bedienelementanlagefläche 10 ist durch die Blendeneinheit 28 gebildet. Das Bedienelement 12 ragt in dem Betriebszustand in einer Gegenrichtung der Tiefenerstreckungsrichtung 42 über die Seitenkontur 32 hinaus.Furthermore, the domestic appliance device has a diaphragm unit 28, which forms a receiving region 30, in which the retaining plate element 14 is arranged in the operating state. The diaphragm unit 28 is integrally formed of aluminum and has a side contour 32 which is arranged on a front side of the diaphragm unit 28. The side contour 32 forms, with respect to a depth extension direction 42 of the cooktop apparatus, an end portion of the aperture unit 28, which faces an operator in an operation. The control element contact surface 10 is formed by the aperture unit 28. The operating element 12 protrudes in the operating state in an opposite direction of the depth extension direction 42 beyond the side contour 32.

Ferner weist das Halteblechelement 14 Laschen 48 auf, die zu einer Justierung des Halteblechelements 14 an der Blendeneinheit bei einer Montage dienen (Figur 4).Further, the retaining plate member 14 has tabs 48, which serve for an adjustment of the retaining plate member 14 on the aperture unit during assembly ( FIG. 4 ).

Des Weiteren weist die Platineneinheit 24 einen Sensor 50 auf, der dazu vorgesehen ist, ein von dem Permanentmagneten 36 erzeugtes Magnetfeld zu sensieren und dadurch festzustellen, ob das Bedienelement 12 auf die Bedienelementanlagefläche 10 aufgelegt ist oder nicht.Furthermore, the board unit 24 has a sensor 50, which is provided to sense a magnetic field generated by the permanent magnet 36 and thereby determine whether the operating element 12 is placed on the control element contact surface 10 or not.

Bezugszeichenreference numeral

1010
BedienelementanlageflächeOperating element contact surface
1212
Bedienelementoperating element
1414
HalteblechelementHolding plate element
1616
Teilbereichsubregion
1818
Unebenheitunevenness
2020
Ausnehmungrecess
2222
Sensoreinheitsensor unit
2424
Platineneinheitboard unit
2626
Auswerteeinheitevaluation
2828
Blendeneinheitdiaphragm unit
3030
Aufnahmebereichreception area
3232
Seitenkonturside contour
3434
MagnetfeldleitelementMagnetfeldleitelement
3636
Permanentmagnetpermanent magnet
3838
Achseaxis
4040
Armpoor
4242
TiefenerstreckungsrichtungDeep extension direction
4444
Sensoreinheitsensor unit
4646
Sensorelementsensor element
4848
Lascheflap
5050
Sensorsensor

Claims (11)

  1. Domestic appliance apparatus, in particular hob apparatus, with an operating element (12) and with at least one operating element contact surface (10), on which the operating element (12) coupled from a functional perspective lies in at least one operating state, wherein the domestic appliance apparatus has at least one retaining sheet element (14), which exerts a magnetic main fastening force upon the operating element (12) in the operating state, and with at least one sensor unit (22, 44), which is arranged at least partially between the retaining sheet element (14) and the operating element contact surface (10),
    characterised in that
    the sensor unit (22, 44) can precisely sense a magnetic field, which emanates from the operating element (12), wherein the operating element (12) has at least one permanent magnet (36) and at least one magnetic field conducting element (34) made from sheet metal in a star-shaped manner, in which a field generated by the permanent magnet (36) is conducted, wherein field lines of said field extend from the permanent magnet (36) through an arm (40) of the magnetic field conducting element (34) and penetrate the sensor unit (22, 44) of the domestic appliance apparatus and are conveyed through the retaining sheet element (14) up to the permanent magnet (36).
  2. Domestic appliance apparatus according to claim 1,
    characterised in that
    the retaining sheet element (14) has an unevenness (18) in at least one subregion (16).
  3. Domestic appliance apparatus according to claim 2,
    characterised in that
    the unevenness (18) has rotational symmetry.
  4. Domestic appliance apparatus according to one of the preceding claims,
    characterised in that
    the retaining sheet element (14) has at least one recess (20).
  5. Domestic appliance apparatus according to one of the preceding claims,
    characterised in that
    the retaining sheet element (14) is formed by electrical steel sheet.
  6. Domestic appliance apparatus according to one of the preceding claims,
    characterised by
    at least one circuit board unit (24), on which the sensor unit (22, 44) is fastened.
  7. Domestic appliance apparatus according to claim 6,
    characterised in that
    the circuit board unit (24) has at least one evaluation unit (26), which is provided to evaluate a sensor signal generated by the sensor unit (22, 44).
  8. Domestic appliance apparatus according to one of the preceding claims,
    characterised by
    at least one panel unit (28), which forms a receiving region (30), in which the retaining sheet element (14) is arranged at least partially in at least one operating state.
  9. Domestic appliance apparatus according to claim 8,
    characterised in that
    the panel unit (28) has a side contour (32), beyond which the operating element (12) protrudes in the operating state.
  10. Domestic appliance apparatus according to one of the preceding claims,
    characterised in that
    a closed magnetic circuit is formed by means of the permanent magnet (36) and the retaining sheet element (14), which guides the magnetic field lines through the sensor unit (22, 44).
  11. Domestic appliance with a domestic appliance apparatus according to one of claims 1 to 10.
EP10760652.7A 2009-09-29 2010-09-17 Household appliance Active EP2483601B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910045129 DE102009045129A1 (en) 2009-09-29 2009-09-29 Domestic appliance device
PCT/EP2010/063746 WO2011039064A1 (en) 2009-09-29 2010-09-17 Household appliance

Publications (2)

Publication Number Publication Date
EP2483601A1 EP2483601A1 (en) 2012-08-08
EP2483601B1 true EP2483601B1 (en) 2018-07-25

Family

ID=43385157

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Application Number Title Priority Date Filing Date
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Country Link
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WO (1) WO2011039064A1 (en)

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DE10035592A1 (en) * 2000-07-21 2002-01-31 Ego Elektro Geraetebau Gmbh Arrangement for controlling electrically controlled device, especially electric heater, has control element with magnet(s), sensor with magnetic field conductor(s) and magnetic field sensor(s)
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