EP2469551B1 - Kochvorrichtung mit einem versenkbaren Drehknebel - Google Patents

Kochvorrichtung mit einem versenkbaren Drehknebel Download PDF

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Publication number
EP2469551B1
EP2469551B1 EP11194038.3A EP11194038A EP2469551B1 EP 2469551 B1 EP2469551 B1 EP 2469551B1 EP 11194038 A EP11194038 A EP 11194038A EP 2469551 B1 EP2469551 B1 EP 2469551B1
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EP
European Patent Office
Prior art keywords
knob
guiding element
cooking appliance
notch
guiding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11194038.3A
Other languages
English (en)
French (fr)
Other versions
EP2469551A2 (de
EP2469551A3 (de
Inventor
Metin Erbay
Gurkan Gundogdu
Emrah Torun
Ramazan Uygun
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
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2469551A2 publication Critical patent/EP2469551A2/de
Publication of EP2469551A3 publication Critical patent/EP2469551A3/de
Application granted granted Critical
Publication of EP2469551B1 publication Critical patent/EP2469551B1/de
Active legal-status Critical Current
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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
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F24C3/126—Arrangement or mounting of control or safety devices on ranges
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/08—Turn knobs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/08—Turn knobs
    • H01H2003/085—Retractable turn knobs, e.g. flush mounted

Definitions

  • the present invention relates to a cooking appliance comprising at least one pop-out control knob assembly, and particularly relates to a gas cooking appliance having at least one push-push pop-out type knob assembly permitting two-step operation of a gas valve mechanism of the cooking appliance.
  • Pop-out knobs operated by way of activation and deactivation steps are well known with their unique structure that enables an operation mode when extended, and provides hidden view with passive mode when retracted. Said extension and retraction of the knob is conducted by way of a simple finger tip depression applied onto the external flat surface of the knob.
  • These classical assemblies find application areas in wide variety of household appliances and electronic devices.
  • the control knobs of this type, in extended position are generally not suitable for operation of the conventional gas valves of the cooking appliances.
  • a control knob needs to be operated by way of sequential bidirectional movement, namely; pushing in a first direction perpendicular to the knob in order to start up the flame, and then rotating said knob axially in order to adjust the gas flow rate through burners.
  • the classical pop-out knobs as disclosed for instance in DE-19801300-A1 , comprise a spring inbetween a knob housing and a heart shaped guiding body having corresponding channels thereon, wherein a guiding element may move along said channels for selectively locking the knob assembly in a certain position. This position ensures the knob assembly to stay in the retracted position against the spring forces. This effect is achieved by snagging of a guiding element in a detent of the heart shaped guiding body.
  • this configuration provides one step locking, namely only for keeping the knob retracted in passive mode.
  • a control knob assembly for a cooking appliance comprising a number of guiding bodies each having two opposite detents in order to ensure two-step locking
  • the guiding elements i.e. guide followers
  • the assembly as disclosed comprises plurality of tracks (e.g. four tracks around the periphery of the cylindrical track body; see col. 4 - lines 13-16) to provide robust knob engagement.
  • the arrangement further needs bosses and serrated edges (see col. 5 - lines 9-12) for prohibiting disengagement of guide followers from the detents.
  • a control knob assembly includes a control knob and a track body disposed in the control knob.
  • a cam arm mounted at one end thereof to the control knob contains on the other end a cam follower which rides in a track disposed within a top surface of the track body.
  • the control knob is slidable over the track body, and is alternatively locatable in extended and retracted positions. When the control knob is located in a retracted position, the cam follower is releasably secured in a notch contained in the track.
  • a pushbutton stop located in the control knob is springloaded to move to a radially extended position when the control knob is extended, thereby aligning the pushbutton stop with an extended portion of the track body, permitting actuation by the user of a two-step gas valve by sequentially depressing and rotating the control knob.
  • a retractable rotary-knob unit for adjusting the switching or control devices disposed behind a switch panel in domestic appliances such as cookers, washing machines or the like, which comprises a rotary knob , a compression spring acting in the axial direction on the rotary knob, a sleeve-like sliding member formed on the rotary knob, a guide sleeve fitted into the sliding member and having a central socket insert, and a closed channel proved at one wall side of the guide sleeve and having a detent position for a sliding pin, characterised by the following features : the sliding pin is part of a movably mounted separate holder, the holder is provided with a pivot pin, the pivot pin is guided for pivoting in a bearing provided in the rotary knob, associated with the top of the holder is a spring element which is supported against the inner wall of the sliding member and holds the sliding pin in engagement with the channel, the spring element is coupled to the pivot pin of the holder.
  • a further object of the present invention is to provide a gas cooking appliance comprising a specially designed frontal notch having a purposive protrusion that eliminates unintentional disengagement of a guiding element by way of a perpendicular obstruction during rotation of the knob assembly.
  • a cooking appliance comprising at least one gas valve and a pop-out type control knob assembly coupled to said gas valve is disclosed.
  • the knob assembly as referred in the present invention comprises a guiding body residing in a knob, a guiding element adapted to travel on a surface of said guiding body, and a spring (not shown) located in between the guiding body and the knob.
  • Said guiding body comprises a number of track grooves forming a loop for travel of the guiding element, and a central ridge having at least two notches located oppositely to each other.
  • control knob assembly is adapted to stay in a first locking position by retraction of the knob and engagement of the guiding element into a backward notch, and to stay in a second locking position by extension of the knob and engagement of the guiding element into a frontal notch.
  • the pop-out control knob is suitable for operation of the cooking appliances having conventional gas valves.
  • the frontal notch of the ridge advantageously comprises a recession adapted to engage with the guiding element, and further comprises a protrusion bordering side of which is protruding preferably parallel to the longitudinal axis of the guiding body.
  • the groove having said protrusion on one side includes, at its other side, at least one confronting point opposite to the frontal notch.
  • One of the missions of said confronting point is preventing unintentional evasion of the guiding element through the previous recession.
  • the cooking appliance of the present invention involves a passive mode when the pop-out type control knob is not used, and an activation mode when said knob is operated.
  • the guiding element is permitted to engage into the rear notch so that the entire knob is kept in retracted position in passive mode.
  • the activation mode the guiding element is freed from the rear notch and and forced through the first recession under spring forces so that the knob may moves outside of the cooking appliance, and thereafter said guiding element which is moved through the control knob assembly track grooves into the first recession is enforced for abutting to the second recession at the utmost opened position outside front panel of the appliance.
  • a continuous pushing in the horizontal axis is applied onto the knob and said guiding element is permitted to engage with the frontal notch such that it may be shifted to activate the gas valve during start up of the flame.
  • the knob in utmost extended position is pushed so that it may return to a mode where flame is interrupted but gas flow is active, and the guiding element is allowed to lean against a third recession under spring forces after hitting the confronting point opposite to the frontal notch of the guiding body. Allowing the gas flow in the position of this recession is ensured by way of pushing the knob again and allowing the guiding element to move through the second track groove into a fourth recession, and subsequently, in the utmost retracted position through rearward side of the front panel, the guiding element is enabled to engage into the rear notch by way of spring forces after removing depression on the knob to provide the retracted position.
  • the present invention provides a cooking appliance (not shown) having one or plurality of pop-out type knob assemblies dedicated to solve the aforementioned problems of the prior art.
  • the general structure of the knob assembly (1) in accordance with the present invention is represented in Figures 1, 2a, 2b and 3 .
  • a knob assembly (1) comprising a knob (10), an inner body (20) and a guiding body (30) which are sequentially nested in each other.
  • the knob (10) which is preferably of cylindrical nature, comprises a backward flush surface (11) upon which the users may readily apply a perpendicular thrust in order to activate and deactivate the entire knob assembly (1).
  • the knob assembly of the invention is designed to be activated by the first push of the user and then starting up the flame with a second push, and further to be deactivated with a third push of the user. During this loop, the knob carries out two locking steps at locking positions of deactivation (retraction) and gas start up. With the term “deactivation” it is to be construed that the knob (10) is kept in retracted position such that it is projection from the front panel of the appliance (not shown) is reduced.
  • the knob (10) as referred above preferably comprises a number of longitudinal grooves (12) along which the corresponding projections (25) of the inner body (20) slidably engage such that said inner body (20) is fixed inside said knob (10).
  • said projections (25) may be formed on a ring shaped ratchet (21) attached to said inner body (20).
  • the inner body (20) as shown in detail with Figure 3 comprises a central opening (22) having longitudinal channels (23) adapted to receive corresponding projections (44) of the guiding body (30).
  • the assembly (1) of the invention further comprises a guiding element (24), preferably in the form of a pin, adapted to move through the corresponding track grooves on the guiding body (30).
  • the guiding body (30) as referred supra comprises an opening (31) so as to receive corresponding shaft of a gas valve (not shown) assembled to the cooking appliance.
  • the upper surface of said guiding body (30) comprises a number of track grooves (32, 33) forming a loop, and a central ridge (41) having two notches (37, 42) located oppositely to each other.
  • the backward notch (42) located in the furthest end of the ridge (41) is adapted to provide a first locking position, and when guiding element (24) resides in this notch (42), entire knob (10) is kept in the retracted position (passive mode).
  • the user When the user wants the knob (10) to be extended (activated) outside the front panel of the cooking appliance, he/she may simply push the depressible surface (11) of the knob (10) so that the guiding element (24) would be freed from the notch (42) and move through the first recess (43) and first track groove (32) until abutting to the second recess (34) with the help of the spring forces. Thereby, a first move for "activation" of the knob assembly (1) becomes completed. The guiding element (24) continues to remain in said recess (34) until the user makes another push through the knob (10).
  • a second notch (37) is provided in the front end of the ridge (41) so that, when the user applies a thrust for a second time, the guiding element (24) may move from the recent recess (34) through the second notch (37).
  • This frontal notch (37) of the ridge (41) advantageously comprises a recess for engaging with the guiding element (24), and also a protrusion (38) one side of which is preferably protruding parallel to the longitudinal axis of the guiding body (30). Said protrusion (38) provides hindrance when the guiding element (24) abuts to its bordering side.
  • said protrusion may have the angles intercepting the longitudinal axis of the guiding body with various angles for hindering unintentional movement of the guiding element (24).
  • the protrusion (38) is preferably provided at a frontal end of the track groove (32, 33) on the guiding body (30), whereas there exists a confronting point (391) opposite to the frontal notch (37) at the other side of the groove (32, 33) for preventing said guiding element (24) unintentionally to retreat to the previous recession (34).
  • a distance (a) having a predetermined length between the end point (381) of the protrusion (38) and perpendicular projection of the confronting point (391) to the lateral axis (y k ) of the control knob assembly.
  • Said distance is, at maximum, equal to the width of the groove (32, 33) in lateral axis (y k ), and preferably is less than width of the groove (32, 33) at lateral axis (y k ).
  • This special arrangement of the said notch (37) preferably provides a perpendicular detention when guiding element (24) leans against the end point (381) of the protrusion (38). Thus, unintentional detachment of the guiding element (24) is prevented by way of the control knob assembly (1) as defined above.
  • the guiding element (24) is snagged in the notch (37) causing the guiding body (30) to be pushed along the longitudinal horizontal axis (x h ) which enables activation of the gas valve in starting up the flame.
  • the knob (10) may also be moved in the radial direction in order to adjust the gas flame as very well known in gas cooking appliances.
  • notch (37) it is one of the objects of the present invention to improve this notch (37) and adapting it for prevention of unintentional disengagement of the guiding element (24).
  • This objective is achieved through providing one edge of the frontal notch (37) with a protrusion (38) parallel to the longitudinal axis (x h ) such that, when guiding element (24) abuts to the bordering side of the protrusion (38), said bordering side responses with a perpendicular force against the guiding element (24), thereby its unintentional disengagement is prevented.
  • the notch (37) may further comprise an inclination part (35) opposite to said protrusion (38) in order to facilitate sliding of the guiding element (24) through the notch (37).
  • the frontal notch (37) designed to prevent unintentional disengagement of the guiding element (24) is configured with an angled "U" shaped recess wherein one bordering side of the recess is formed by said protrusion (38) as shown in Figures 6, 7a and 7b .
  • said notch (37) is configured with an angled "V" shaped recess wherein one bordering side of the recess merges with the perpendicular protrusion (38) as shown in Figures 4, 5a and 5b .
  • the guiding element (24) moves to a third recess (39) with effect of the spring forces until the user decides to deactivate the gas valve and applies a further push to retract the knob assembly (1) into the original position (passive mode).
  • the guiding body (30) comprises a second track groove (33) by way of which the guiding element (24) moves through a fourth recess (40). Then the user may leave the knob (10) permitting the guiding element (24) to sit on the backward notch (42), thereby return to its first locking position (retraction).
  • Said backward notch (42) may be of a classical parabolic nature widely applied in the technical field of the invention. Although not essential for the present invention, its shape may be optimized depending on the shape and position of the details (e.g. ridge, track grooves, recesses etc.) of the guiding body (30).
  • the frontal notch (37) which constitutes essence of the present invention may have a shape other than the angled "U” and “V” recesses such as a semi-circular or semi-parabolic recession as long as the protrusion (38) is arranged in parallel to the longitudinal axis (x h ) and perpendicularly confronted with the guiding element (24) so that unintentional disengagement of said guiding element (24) may completely be eliminated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Cookers (AREA)
  • Mechanical Control Devices (AREA)

Claims (9)

  1. Kochvorrichtung, die wenigstens ein Gasventil und einen mit dem Gastventil gekoppelten versenkbaren Drehknebel (1) umfasst, wobei der Drehknebel (1) einen in einem Knebel (10) sitzenden Führungskörper (30), ein Führungselement (24), das ausgebildet ist, um sich über eine Oberfläche des Führungskörpers (30) zu bewegen, und eine zwischen dem Führungskörper (30) und dem Knebel (10) angeordnete Feder umfasst, wobei der Führungskörper (30) eine Anzahl von Spurrillen (32, 33), die eine Schleife für die Bewegung des Führungselements (24) bilden, und einen zentralen Steg (41), der wenigstens zwei einander gegenüber angeordnete Kerben (37, 42) hat, umfasst, wobei der Drehknebel (1) ausgebildet ist, um durch Einfahren des Knebels (10) und Eingreifen des Führungselements (24) in eine Rückwärtskerbe (42) in einer ersten Verriegelungsstellung zu bleiben und durch Ausfahren des Knebels (10) und Eingreifen des Führungselements (24) in eine Vorwärtskerbe (37) in einer zweiten Verriegelungsstellung zu bleiben,
    dadurch gekennzeichnet, dass
    die Vorwärtskerbe (37) eine Aussparung aufweist, die zum Eingreifen in das Führungselement (24) ausgebildet ist, und ferner einen Vorsprung (38) aufweist, der zur Verriegelung des Führungselements (24) ausgebildet ist, und wobei der Vorsprung (38) parallel zu einer Längsachse (xh) des Führungskörpers (30) hervorsteht, um eine senkrechte Verriegelung anzuwenden, wenn das Führungselement (24) an die Grenzseite des Vorsprungs (38) angrenzt.
  2. Kochvorrichtung nach Anspruch 1, wobei der Drehknebel (1) wenigstens einen gegenüberstehenden Punkt (391) zwischen einer zweiten Aussparung (34), die an der anderen Seite der Rille (32, 33), die den Vorsprung (38) an einer Seite hat, angeordnet ist, und einer dritten Aussparung (39) gegenüber dem Punkt (391) umfasst.
  3. Kochvorrichtung nach Anspruch 1, wobei der Drehknebel (1) einen dazwischenliegenden Abstand (a) mit einer vorgegebenen Länge zwischen dem Endpunkt (381) des Vorsprungs (38) und der senkrechten Projektion des gegenüberstehenden Punktes (391) zu der Längsachse des Knebels (10) umfasst.
  4. Kochvorrichtung nach Anspruch 1, wobei der Drehknebel (1) ferner einen Innenkörper (20) umfasst, der eine Öffnung (22) zum Aufnehmen und Einnisten des Führungskörpers (30) hat.
  5. Kochvorrichtung nach Anspruch 1, wobei das Führungselement (24) als ein Zapfen ausgebildet ist.
  6. Kochvorrichtung nach Anspruch 1, wobei der Knebel (10) mit einem zylindrischen Körper, der eine eindrückbare Oberfläche (11) hat, ausgebildet ist.
  7. Kochvorrichtung nach Anspruch 1, wobei die Aussparung der Vorwärtskerbe (37) in einer abgewinkelten "U"-Form ausgebildet ist.
  8. Kochvorrichtung nach Anspruch 1, wobei die Aussparung der Vorwärtskerbe (37) in einer abgewinkelten "V"-Form ausgebildet ist.
  9. Verfahren zum Betrieb eines versenkbaren Drehknebels (1) mit einem passiven Modus, wenn eine Gaskochvorrichtung nicht betrieben wird, und einem Aktivierungsmodus, wenn die Vorrichtung betrieben wird, wobei das Verfahren die folgenden Schritte umfasst:
    - Ermöglichen des Anbringen eines Führungselement (24) an einer Rückwärtskerbe (42), um einen gesamten Knebel in einer Einfahrstellung zu halten,
    - Lösen des Führungselements (24) von der Rückwärtskerbe (42) und Bewegen desselben in eine erste Vertiefung (43) unter Federkräften, um den Knebel (10) im Aktivierungsmodus außerhalb der Frontplatte der Kochvorrichtung zu bewegen,
    - Bringen des Führungselements (24), dem gestattet ist, in eine Nut (32) des Drehknebels (1) zu gelangen, indem es in die erste Vertiefung (43) gedrückt wird, in eine zweite Vertiefung (34), wodurch dasselbe in eine äußerste Ausfahrstellung gebracht wird,
    - weiteres Drücken auf den Knebel (10) entlang einer Längsachse (xh), sodass das Führungselement (24) sich von der zweiten Vertiefung (34) durch die Vorwärtskerbe (37) in eine Stellung bewegen kann, in der die radiale Drehung des Knebels nicht behindert wird,
    - Bringen des Führungselements (24) zum Eingreifen in die Vorwärtskerbe (37) durch Bewegen und Aktivieren des Gasventils beim Starten der Flamme,
    - erneutes Bringen des Führungselements (24) in die äußerste Ausfahrstellung außerhalb der Frontplatte, um den Gasstrom zu ermöglichen, indem es an den gegenüberliegenden Punkt (391) gegenüber der Vorwärtskerbe (37) des Führungskörpers (30) unter Einfluss der Feder angeschlagen wird, und Gestatten, dass es gegen eine dritte Vertiefung (39) lehnt, durch Ausüben eines Stoßes auf den Knebel (10), um die Flamme nach dem Entflammen zu unterbrechen,
    - Bringen des Führungselements (24) in eine vierte Vertiefung (43) durch Bewegung in der zweiten Nut (33) durch Drehen des Knebels (10), um in den passiven Modus zurückzukehren,
    - Lösen des Niederdrückens des Knebels und Eingreifen des Führungselements (24) in die Rückwärtskerbe (42), um die Einfahrstellung zur Rückseite der Frontplatte in der äußersten eingefahrenen Form bereitzustellen.
EP11194038.3A 2010-12-22 2011-12-16 Kochvorrichtung mit einem versenkbaren Drehknebel Active EP2469551B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR2010/10712A TR201010712A1 (tr) 2010-12-22 2010-12-22 Basmalı tip ayar düğme düzeneğine sahip pişirme aleti

Publications (3)

Publication Number Publication Date
EP2469551A2 EP2469551A2 (de) 2012-06-27
EP2469551A3 EP2469551A3 (de) 2017-06-07
EP2469551B1 true EP2469551B1 (de) 2019-02-20

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Application Number Title Priority Date Filing Date
EP11194038.3A Active EP2469551B1 (de) 2010-12-22 2011-12-16 Kochvorrichtung mit einem versenkbaren Drehknebel

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EP (1) EP2469551B1 (de)
TR (1) TR201010712A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016001358U1 (de) 2016-03-02 2016-03-24 I.T.R. Industria Trasformazione Resine S.R.L. Einschiebbarer Knopf für Öfen oder andere Haushaltsgeräte
KR102683539B1 (ko) * 2020-01-17 2024-07-11 삼성전자주식회사 노브 어셈블리 및 이를 갖는 조리기기

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3427378A1 (de) * 1984-07-25 1986-01-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Versenkbarer drehknebel
JPH03111100A (ja) * 1989-09-25 1991-05-10 Toshiba Corp 洗濯機
CA2112761A1 (en) * 1993-01-05 1994-07-06 Keith Ray Control knob assembly for a cooking appliance
US5384442A (en) 1993-01-05 1995-01-24 Whirlpool Corporation Control knob assembly for a cooking appliance
DE19801300C2 (de) 1998-01-16 1999-11-11 Aeg Hausgeraete Gmbh Versenkbare Drehknebeleinheit
PL2345053T3 (pl) * 2008-10-30 2016-07-29 Arcelik As Chowany obrotowy przycisk urządzenia przełączającego w szczególności urządzenia gospodarstwa domowego

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
EP2469551A2 (de) 2012-06-27
TR201010712A1 (tr) 2012-07-23
EP2469551A3 (de) 2017-06-07

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