EP0173820A1 - Rotatable and retractable knob - Google Patents

Rotatable and retractable knob Download PDF

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Publication number
EP0173820A1
EP0173820A1 EP85108403A EP85108403A EP0173820A1 EP 0173820 A1 EP0173820 A1 EP 0173820A1 EP 85108403 A EP85108403 A EP 85108403A EP 85108403 A EP85108403 A EP 85108403A EP 0173820 A1 EP0173820 A1 EP 0173820A1
Authority
EP
European Patent Office
Prior art keywords
rotary knob
holder
rotary
spring element
knob
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.)
Granted
Application number
EP85108403A
Other languages
German (de)
French (fr)
Other versions
EP0173820B1 (en
Inventor
Werner Scheuering
Helmut Straninger
Joachim Weinhold
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0173820A1 publication Critical patent/EP0173820A1/en
Application granted granted Critical
Publication of EP0173820B1 publication Critical patent/EP0173820B1/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels
    • G05G1/087—Controlling members for hand actuation by rotary movement, e.g. hand wheels retractable; Flush control knobs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/56—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force
    • H01H13/562—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force making use of a heart shaped cam
    • 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 invention relates to a retractable rotary knob according to the preamble of claim 1.
  • the object of the invention is to constructively improve a retractable rotary toggle of the type described at the outset in such a way that mechanical wear on the groove track is avoided and the countersinking process can be carried out easily and thus in a manner which saves energy.
  • the proposed measures create a retractable rotary toggle, which is largely immune to mechanical wear due to its sliding pin and thus has a long service life with a high degree of functional reliability in every rotary range or respective rotary position of the rotary knob.
  • the rotary toggle unit shown in the drawing consists essentially of the corrugated rotary toggle 1, on which a square-shaped guide sleeve 2 is formed, and a toggle shaft 3, which is designed to fit into the guide sleeve and has a central plug insert 4.
  • the plug insert is used to produce a plug connection for setting a switching or regulating device, not shown, as is used in household appliances (cookers, washing machines, dishwashers, tumble dryers, etc.).
  • the invisible torsion spring is accommodated in the interior of the rotary lever 1 and is supported against the end face of the toggle shaft 3 ending in the guide sleeve 2. In one jacket side 5 of the toggle shaft 3, a closed groove 6 is introduced.
  • a detent point 7 is formed at one end of the groove track 6, while the other end of the groove track merges into a stop point 8.
  • the groove track 6 is used for guidance a sliding pin 9, which is part of a movable holder 10.
  • the holder 10 has a bearing pin 11 on the upper side, which is movably guided in a hollow rivet 12 inserted in the jacket of the rotary knob 1.
  • Arranged parallel to the top of the holder 10 is an approximately U-shaped leaf spring element 13, which is supported against the inner wall of the guide sleeve 2 and thus runs between the latter and the holder 10.
  • a guide groove 14 is expediently formed in the wall of the guide sleeve 2 for the leaf spring element 13.
  • the leaf spring element 13 is attached with the end opposite the resilient part to the bearing journal 11 of the holder 10, so that both parts (holder 10 and leaf spring element 13) are part of the rotary toggle 1 and are articulated or movably coupled thereto.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
  • Mechanical Control Devices (AREA)

Abstract

1. 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 (1), a compression spring acting in the axial direction on the rotary knob (1), a sleeve-like sliding member (2) formed on the rotary knob (1), a guide sleeve (3) fitted into the sliding member (2) and having a central socket insert (4), and a closed channel (6) proved at one wall side (5) of the guide sleeve and having a detent position (7) for a sliding pin (9), characterised by the following features : the sliding pin (9) is part of a movably mounted separate holder (10), the holder (10) is provided with a pivot pin (11), the pivot pin (11) is guided for pivoting in a bearing (12) provided in the rotary knob (1), associated with the top of the holder (10) is a spring element (13) which is supported against the inner wall of the sliding member (2) and holds the sliding pin (9) in engagement with the channel (6), the spring element (13) is coupled to the pivot pin (11) of the holder (10).

Description

Die Erfindung betrifft einen versenkbaren Drehknebel nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a retractable rotary knob according to the preamble of claim 1.

Aus der DE-C-22 50 621 ist ein versenkbarer Drehknebel dieser Art bekannt. Bei diesem versenkbaren Drehknebel ist der die geschlossene Nutbahn durchfahrende Gleitstift (Zapfen) fester Bestandteil des Drehknebels. Dies hat zur Folge, daß beim Versenkungsvorgang des Drehknebels ein großer Kraftaufwand erforderlich ist, der sich daraus ergibt, daß beim Durchfahren der geschlossenen Nutbahn mit dem starren Gleitstift (Zapfen) große Reibungskräfte zu überwinden sind. Es hat sich nun gezeigt, daß sich an der geschlossenen Nutbahn durch die große Beanspruchung beim Durchfahren mit dem starren Gleitstift (Zapfen) schon bald mechanische Abnützungserscheinungen bemerkbar machen. Diese führen dann dazu, daß eine sichere Funktion nicht mehr gewährleistet ist und oftmals der Drehknebel beim Ausführen des Versenkungsvorgangs nicht sicher verrastet und nach Loslassen nicht in die versenkte Ruhestellung sondern wider in die ausgefahrene Betriebsstellung zurückspringt.From DE-C-22 50 621 a retractable rotary knob of this type is known. With this retractable rotary toggle, the sliding pin (pin) passing through the closed groove is an integral part of the rotary toggle. The consequence of this is that a great effort is required during the lowering process of the rotary toggle, which results from the fact that large frictional forces have to be overcome when driving through the closed groove with the rigid sliding pin (pin). It has now been shown that mechanical signs of wear will soon be noticeable on the closed groove track due to the high stress when driving through with the rigid sliding pin (pin). This then leads to the fact that a safe function is no longer guaranteed and often the rotary knob is not securely locked when the lowering process is carried out and does not spring back into the retracted rest position but instead into the extended operating position after being released.

Aufgabe der Erfindung ist es, einen versenkbaren Drehknebel der eingangs beschriebenen Art konstuktiv mit einfachen Mitteln so zu verbessern, daß mechanische Abnützungen an der Nutbahn vermieden werden und der Versenkungsvorgang leicht und damit kraftsparend ausgeführt werden kann.The object of the invention is to constructively improve a retractable rotary toggle of the type described at the outset in such a way that mechanical wear on the groove track is avoided and the countersinking process can be carried out easily and thus in a manner which saves energy.

Die Lösung dieser Aufgabe gemäß der Erfindung ist dem kennzeichnenden Teil des Patentanspruchs 1 zu entnehmen.The solution to this problem according to the invention can be found in the characterizing part of patent claim 1.

Zweckmäßige weitere Ausgestaltungen des Gegenstandes der Erfindung sind in den Unteransprüchen angegeben.Advantageous further developments of the subject matter of the invention are specified in the subclaims.

Durch die vorgeschlagenen Maßnahmen wird ein versenkbarer Drehknbel geschaffen, der wegen seine Gleitstiftes gegenüber mechanischen Abnützungen weitgehend immun ist und damit eine lange Lebensdauer bei hoher Funktionssicherheit in jedem Drehbereich bzw. jeweiliger Drehstellung des Drehknebels aufweist.The proposed measures create a retractable rotary toggle, which is largely immune to mechanical wear due to its sliding pin and thus has a long service life with a high degree of functional reliability in every rotary range or respective rotary position of the rotary knob.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird an Hand dieser nachfolgend näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below with reference to this.

Es zeigen:

  • Fig. 1 eine versenkbare Drehknebeleinheit mit ausgefahrenem (Betriebsstellung) Drehknebel teilweise aufgeschnitten,
  • Fig. 2 diese Drehknebeleinheit im senkrechten Mittelschnitt
Show it:
  • 1 a retractable rotary toggle unit with the (operating position) rotary toggle partially cut away,
  • Fig. 2 this rotary toggle unit in the vertical central section

Die in der Zeichnung dargestellte Drehknebeleinheit besteht im wesentlichen aus dem geriffelten Drehknebel 1, an dem eine quadratisch ausgebildete Führungshülse 2 angeformt ist, und eine in die Führungshülse passende ebenso ausgebildete Knebelwelle 3, welche einen zentrischen Steckeinsatz 4 aufweist. Der Steckeinsatz dient zur Herstellung einer Steckverbindung zum Einstellen einer nicht dargestellten Schalt- oder Regeleinrichtung, wie sie in Haushalts, geräten (Herde, Waschmaschinen, Geschirrspülmaschinen, Wäschetrockner usw.) Verwendung findet. Im Innern des Drehhebels 1 ist die nicht sichtbare Drehfeder untergebracht, die sich gegen die in der Führungshülse 2 endende Stirnseite der Knebelwelle 3 abstützt. In der einen Mantelseite 5 der Knebelwelle 3 ist eine geschlossene Nutbahn 6 eingebracht. An dem einen Ende der Nutbahn 6 ist eine Raststelle 7 gebildet, während das andere Ende der Nutbahn in eine Anschlagstelle 8 übergeht. Die Nutbahn 6 dient zur Führung eines Gleitstiftes 9, der Bestandteil eines beweglichen Halters 10 ist. Der Halter 10 besitzt oberseitig einen Lagerzapfen 11, der in einem im Mantel des Drehknebels 1 eingebrachten Hohlniet 12 beweglich geführt ist. Parallel zur Oberseite des Halters 10 ist ein etwa U-förmig gebogenes Blattfederelement 13 angeordnet, das sich gegen die innere Wandung der Führungshülse 2 abstützt und damit zwischen dieser und dem Halter 10 verläuft. Für das Blattfederelement 13 ist in der Wandung der Führungshülse 2 zweckmäßig eine Führungsnut 14 ausgeformt. Das Blattfederelement 13 ist mit dem den federnden Teil entgegengesetztem Ende am Lagerzapfen 11 des Halters 10 angebracht, so daß damit beide Teile (Halter 10 und Blattfederelement 13) Bestandteil des Drehknebels 1 und gelenkig bzw. beweglich mit diesem gekoppelt sind.The rotary toggle unit shown in the drawing consists essentially of the corrugated rotary toggle 1, on which a square-shaped guide sleeve 2 is formed, and a toggle shaft 3, which is designed to fit into the guide sleeve and has a central plug insert 4. The plug insert is used to produce a plug connection for setting a switching or regulating device, not shown, as is used in household appliances (cookers, washing machines, dishwashers, tumble dryers, etc.). The invisible torsion spring is accommodated in the interior of the rotary lever 1 and is supported against the end face of the toggle shaft 3 ending in the guide sleeve 2. In one jacket side 5 of the toggle shaft 3, a closed groove 6 is introduced. A detent point 7 is formed at one end of the groove track 6, while the other end of the groove track merges into a stop point 8. The groove track 6 is used for guidance a sliding pin 9, which is part of a movable holder 10. The holder 10 has a bearing pin 11 on the upper side, which is movably guided in a hollow rivet 12 inserted in the jacket of the rotary knob 1. Arranged parallel to the top of the holder 10 is an approximately U-shaped leaf spring element 13, which is supported against the inner wall of the guide sleeve 2 and thus runs between the latter and the holder 10. A guide groove 14 is expediently formed in the wall of the guide sleeve 2 for the leaf spring element 13. The leaf spring element 13 is attached with the end opposite the resilient part to the bearing journal 11 of the holder 10, so that both parts (holder 10 and leaf spring element 13) are part of the rotary toggle 1 and are articulated or movably coupled thereto.

Die Funktion der vorbeschriebenen Drehknebeleinheit ist folgende:

  • Der Drehknebel 1 befindet sich beim dargestellten Ausführungsbeispiel im ausgefahrenen Zustand, welcher die Betriebsstellung des Drehknebels ist und zum Einstellen der an der Einstellwelle 3, 4 ankoppelbaren Schalt- und Regeleinrichtung des elektrischen Haushaltsgerätes dient.
  • Der Gleitstift 9 befindet sich dabei im Bereich der Anschlagstelle 8 am Ende der Nutbahn 6, wodurch die Betriebsstellung des Drehknebels fixiert bzw. festgelegt ist. Soll der Drehknebel 1 in seine Ruhestellung (Versenkstellung) gebracht werden, so wird dieser gegen die Kraft der erwähnten Druckfeder im Innern des Drehknebels axial gegenüber der Knebelwelle 3 verschoben. Der bewegliche Gleitstift 8, der mittels dem auf dem Gleitstift-Halter 10 einwirkenden Blattfederelement 13 in die Nutbahn 6 gedrückt wird, fährt in der Nutbahn 6 entlang, bis er in die Raststelle 7 kippt. Mit Loslassen des Drehknebels 1 ist dessen Ruhestellung (Versenkstellung) gesichert. Durch ein kurzzeitiges Antippen des Drehknebels 1 kann die Raststellung wieder aufgehoben werden.
  • Der Drehknebel 1 wird dann durch Entspannen der Druckfeder im Innern des Drehknebels automatisch in seine Betriebsstellung gebracht.
The function of the rotary knob unit described above is as follows:
  • The rotary knob 1 is in the illustrated embodiment in the extended state, which is the operating position of the rotary knob and is used to adjust the switching and control device of the electrical household appliance that can be coupled to the setting shaft 3, 4.
  • The sliding pin 9 is located in the area of the stop 8 at the end of the groove 6, whereby the operating position of the rotary knob is fixed or fixed. If the rotary toggle 1 is to be brought into its rest position (retracted position), it is axially displaced in relation to the toggle shaft 3 against the force of the compression spring mentioned inside the rotary toggle. The movable slide pin 8, which is pressed into the groove track 6 by means of the leaf spring element 13 acting on the slide pin holder 10, travels along the groove track 6 until it tilts into the latching point 7. When the rotary knob 1 is released, its rest position (retracted position) is secured. The latching position can be canceled again by briefly tapping the rotary knob 1.
  • The rotary toggle 1 is then automatically brought into its operating position by relaxing the compression spring inside the rotary toggle.

Claims (5)

1. Versenkbarer Drehknebel zum Einstellen für die hinter einer Schalterblende angeordneten Schalt- oder Regeleinrichtungen in Haushaltsgeräten, wie Herde, Waschmaschinen oder dgl., der unter der Einwirkung einer in Achsrichtung wirkenden Druckfeder gehalten ist, und der Drehknebel bei gespannter Druckfeder mittels eines in der Raststelle in einer geschlossenen Nutbahn eingerasteten Gleitstiftes in Versenkstellung fixiert ist und die Versenkstellung des Drehknebels durch Antippen des Drehknebels auslösbar ist und dieser durch Entspannen der Druckfeder in seine Betriebsstellung in der Schalterblende bringbar ist, daudrch gekennzeichnet, daß der Gleitstift (9) beweglich gehaltert und mittels eines Federelementes (13) in Eingriff mit der Nutbahn (6) gebracht ist.1. Retractable rotary knob for setting the switching or control devices in household appliances such as stoves, washing machines or the like arranged behind a switch panel, which is held under the action of a compression spring acting in the axial direction, and the rotary knob when the compression spring is tensioned by means of a in the locking point is locked in a closed groove track in the retracted position and the retracted position of the rotary knob can be triggered by tapping the rotary knob and this can be brought into its operating position in the switch panel by releasing the compression spring, characterized in that the slide pin (9) is movably supported and by means of a Spring element (13) is brought into engagement with the groove track (6). 2. Drehknebel nach Anspruch 1, dadurch gekennzeichnet, daß der Gleitstift (9) Bestandteil eines beweglichen Halters (10) ist und das Federelement (13) mit dem Halter in Wirkverbindung gehalten ist.2. Rotary knob according to claim 1, characterized in that the sliding pin (9) is part of a movable holder (10) and the spring element (13) is held in operative connection with the holder. 3. Drehknebel nach Anspruch 2, dadurch gekennzeichnet, daß das Federelement (13) als gebogene Blattfeder ausgebildet und parallel zum Halter (10) verlaufend angeordnet ist.3. Turning knob according to claim 2, characterized in that the spring element (13) is designed as a curved leaf spring and is arranged parallel to the holder (10). 4. Drehknebel nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Halter (10) zusammen mit dem Federelement (13) Bestandteile des Drehhebels (1) sind und beide Teile (10,13) gelenkig bzw. beweglich mit dem Drehknopf (1) gekoppelt sind.4. Rotary knob according to claim 2 or 3, characterized in that the holder (10) together with the spring element (13) are components of the rotary lever (1) and both parts (10, 13) articulated or movable with the rotary knob (1) are coupled. 5. Drehknebel nach Anspruch 1 oder einem der folgenden, dadurch gekennzeichnet, daß in der Wandung des Drehknebels (1) eine Führungsnut (14) für das Federelement (13) gebildet ist.5. Turning knob according to claim 1 or one of the following, characterized in that a guide groove (14) for the spring element (13) is formed in the wall of the rotary knob (1).
EP85108403A 1984-07-25 1985-07-06 Rotatable and retractable knob Expired EP0173820B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3427378 1984-07-25
DE19843427378 DE3427378A1 (en) 1984-07-25 1984-07-25 Retractable rotary knob

Publications (2)

Publication Number Publication Date
EP0173820A1 true EP0173820A1 (en) 1986-03-12
EP0173820B1 EP0173820B1 (en) 1989-09-20

Family

ID=6241504

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108403A Expired EP0173820B1 (en) 1984-07-25 1985-07-06 Rotatable and retractable knob

Country Status (2)

Country Link
EP (1) EP0173820B1 (en)
DE (2) DE3427378A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236380A (en) * 1989-09-25 1991-04-03 Toshiba Kk Retractable operating knobs for washing machines
FR2698459A1 (en) * 1992-11-20 1994-05-27 Renault Retractable knob operating rotating shaft control - uses spring-loaded knob sliding axially on control shaft and has locking arm parallel to shaft that is displaced by guides in knob.
EP0671681A1 (en) * 1994-03-09 1995-09-13 Whirlpool Europe B.V. Retractable turning knob
EP1061429A1 (en) * 1999-06-19 2000-12-20 Mannesmann VDO Aktiengesellschaft Retractable rotary knob
EP2469551A3 (en) * 2010-12-22 2017-06-07 BSH Hausgeräte GmbH Cooking appliance having pop-out type control knob assembly

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4343977C2 (en) * 1993-12-22 1997-07-03 Bosch Siemens Hausgeraete Actuating device for a door lock of a door of a household appliance lockable with this door lock
DE4343976C2 (en) * 1993-12-22 1998-02-12 Bosch Siemens Hausgeraete Retractable door handle
DE19545994A1 (en) * 1995-12-09 1997-06-12 Aeg Hausgeraete Gmbh Retractable rotary toggle unit
DE19801300C2 (en) * 1998-01-16 1999-11-11 Aeg Hausgeraete Gmbh Retractable rotary toggle unit
DE19904070A1 (en) * 1999-02-02 2000-08-03 Volkswagen Ag Retractable switching element with pop-out button
TR201002246A2 (en) * 2010-03-24 2011-10-21 Bora Bükülmez Mehmet A push pull mechanism.
EP3051550B1 (en) * 2013-09-24 2018-11-14 Siemens Aktiengesellschaft Heart-shaped self-locking button
TR201704416A2 (en) * 2017-03-24 2018-03-21 Imren Plastik Sanayi Ve Ticaret Ltd Sirketi A MOTION CONTROL MECHANISM

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187602A (en) * 1960-07-06 1965-06-08 Telephone Mfg Co Ltd Push button device
DE1213194B (en) * 1962-06-16 1966-03-24 L Isostat Fa Locking device for a slide
US3557637A (en) * 1969-07-28 1971-01-26 Gen Motors Corp Control knob
DE2250621A1 (en) * 1972-10-16 1974-04-18 Standard Elektrik Lorenz Ag ROTARY KNOB FOR AN ADJUSTMENT SHAFT
FR2447060A1 (en) * 1979-01-19 1980-08-14 Thomson Brandt Countersunk rotary control knob for domestic electric appliance etc. - has heart shaped race for retaining ball in outer peripheral surface of inner element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187602A (en) * 1960-07-06 1965-06-08 Telephone Mfg Co Ltd Push button device
DE1213194B (en) * 1962-06-16 1966-03-24 L Isostat Fa Locking device for a slide
US3557637A (en) * 1969-07-28 1971-01-26 Gen Motors Corp Control knob
DE2250621A1 (en) * 1972-10-16 1974-04-18 Standard Elektrik Lorenz Ag ROTARY KNOB FOR AN ADJUSTMENT SHAFT
FR2447060A1 (en) * 1979-01-19 1980-08-14 Thomson Brandt Countersunk rotary control knob for domestic electric appliance etc. - has heart shaped race for retaining ball in outer peripheral surface of inner element

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236380A (en) * 1989-09-25 1991-04-03 Toshiba Kk Retractable operating knobs for washing machines
GB2236380B (en) * 1989-09-25 1994-01-12 Toshiba Kk Clothes washing machine
FR2698459A1 (en) * 1992-11-20 1994-05-27 Renault Retractable knob operating rotating shaft control - uses spring-loaded knob sliding axially on control shaft and has locking arm parallel to shaft that is displaced by guides in knob.
EP0671681A1 (en) * 1994-03-09 1995-09-13 Whirlpool Europe B.V. Retractable turning knob
EP1061429A1 (en) * 1999-06-19 2000-12-20 Mannesmann VDO Aktiengesellschaft Retractable rotary knob
US6410871B1 (en) 1999-06-19 2002-06-25 Mannesmann Vdo Ag Retractable rotary knob for switch including latch mechanism
EP2469551A3 (en) * 2010-12-22 2017-06-07 BSH Hausgeräte GmbH Cooking appliance having pop-out type control knob assembly

Also Published As

Publication number Publication date
DE3573181D1 (en) 1989-10-26
DE3427378A1 (en) 1986-01-30
EP0173820B1 (en) 1989-09-20

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