EP0102332B2 - Dispositif de contrôle rotatif avec bouton rétractable, en particulier pour appareils ménagers - Google Patents

Dispositif de contrôle rotatif avec bouton rétractable, en particulier pour appareils ménagers Download PDF

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Publication number
EP0102332B2
EP0102332B2 EP19830830171 EP83830171A EP0102332B2 EP 0102332 B2 EP0102332 B2 EP 0102332B2 EP 19830830171 EP19830830171 EP 19830830171 EP 83830171 A EP83830171 A EP 83830171A EP 0102332 B2 EP0102332 B2 EP 0102332B2
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EP
European Patent Office
Prior art keywords
knob
control
shaft
piston
restraint device
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.)
Expired - Lifetime
Application number
EP19830830171
Other languages
German (de)
English (en)
Other versions
EP0102332A3 (en
EP0102332A2 (fr
EP0102332B1 (fr
Inventor
Roberto Bertazzoni
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.)
Smeg SpA
Original Assignee
Smeg SpA
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Publication date
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Application filed by Smeg SpA filed Critical Smeg SpA
Publication of EP0102332A2 publication Critical patent/EP0102332A2/fr
Publication of EP0102332A3 publication Critical patent/EP0102332A3/en
Application granted granted Critical
Publication of EP0102332B1 publication Critical patent/EP0102332B1/fr
Publication of EP0102332B2 publication Critical patent/EP0102332B2/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operation after the programme is completed
    • 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
    • H01H25/00—Switches with compound movement of handle or other operating part
    • H01H25/06—Operating part movable both angularly and rectilinearly, the rectilinear movement being along the axis of angular movement
    • 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 deals with a rotatory control device having a control handle or knob movable from a work position in which it projects from a surrounding surface to a rest position, being retracted with respect to said surface.
  • Such control devices are sometimes used in household appliances,such as for controlling cocks or switches of gas cookers or electric cookers, respectively, ovens and the like. Their purpose is that of providing an easy handling and working of the knob when this is in the projecting position, and its subsequent travel to the rest position, in which it does not project from the surrounding surface of the household apparatus, generally formed of a control panel, thus being protected from shocks and undesired strokes, and in addition the apparatus aspect is aesthetically improved.
  • the known devices could not be used with the timer knob of a dishwashing machine, when it is mounted on the machine door and all the associated linkages, as well as the seat for the back stroke of the knob, must be contained in the restricted thickness available between the door and the inner screen-door of the machine.
  • GB-A-2 088 639 intends to solve this problem by obtaining a push-push device of smooth and reliable operation without play, wherein said device is not housed in the knob, but in a box-shaped frame positioned at the rear of the component (a sound volume control mechanism).
  • This solution however requires additional space behind the component, which often is not available.
  • US-A-3 557 637 discloses a rotary control device according to the pre-characterizing part of claim 1.
  • the aim of the present invention is to provide a rotary control device with a retractable knob, said device being of smaller dimensions than present known control devices.
  • These types of control devices are sometimes used in household appliances and mounted in the frontwall thereof, where the available depth for such a control device is limited and therefore should be of small dimensions.
  • the invention provides a control device where the restraint device operable in two steps to control the longitudinal movement of the control shaft is housed within a hollow central portion of the component to be controlled. With this construction the presence of the restraint device does not add to the depth size of the control device assembly, which is normally the case in known control devices, and the present invention consequently may have a particularly compact construction.
  • shaft integral to the knob can be guided within the component to be controlled, or in relationship to parts integral therewith, much more efficiently than the way a slidable knob can be guided along its shaft, thus resulting in an improved stability of the knob in the "work" positions.
  • control shaft to the front end of which the control knob is fixedly mounted, is made integral in its back end portion to a piston-shaped member being axially slidable in the hollow central part of the rotating portion of the component to be controlled to which it is coupled for rotation movement by means of a key-type coupling, the piston--shaped member cooperating with a return spring biasing it to the position corresponding to the forward projecting knob and being formed with a shaped portion which is a part of the two-steps operated restraint device.
  • these configurations of the piston member, forming a part of the restraint device comprise a recessed and shaped track co-operating with a coupling clip which is inserted in the rotating portion of the component to be cotrolled.
  • control device of the invention is the actuation means for operating the programme timer of a household appliance such as a dishwasher, washing machine, cooker, oven or the like.
  • numeral 1 represents a programme timer of a generally known type, but having a hollow central portion 2 which is integral to the rotating part of the component and formed of a multiplicity of cams, not shown.
  • This hollow central portion 2 is provided with a key 3 extending longitudinally within its cavity.
  • the hollow portion 2 houses a coupling clip 4 with a bent free end 5.
  • a piston-shaped member 6 is placed within the hollow portion 2 of the timer and shows a groove corresponding to the key 3 and co-operating therewith, so that the piston 6 can slide axially in the hollow portion 2 while rotates with the latter without relative motion.
  • the piston 6 On the side opposite to the key 3 the piston 6 has a plane face with a shaped grooved track 7 adapted to co-operate with the bent free end 5 of the coupling clip 4 to form therewith a restraint device operable in two steps, which is well known per se.
  • a control shaft 9 projecting from the timer hollow portion 2 is fixed to the piston-shaped member 6 and a knob 10 is fixedly mounted at its outer end.
  • the knob is placed in correspondence with a recess 12 formed in a surface 11, in this case a dishwasher door.
  • the position of the knob 10 in relationship with the surface 11 is such that when the piston 6 is in its position far from the bottom of the hollow portion 2 (Fig. 1), the knob 10 protrudes from surface 11, whereas when the piston 6 is near the bottom of the hollow portion 2 (Fig. 2) the knob is within (in this case completely) the recess 12 which is the seat for its housing.
  • the operation of the device is as follows. Supposing initially the rest position (Fig. 2), upon exerting a pressure on the knob 10 which is retracted in the seat 12, the restraint device to be operated in two steps is actuated to the effect that spring 8 is allowed to move piston 6 away from the bottom of the hollow portion 2: the knob 10 assumes the protruding position of Fig. 1. Then it can be grasped and caused to rotate in or- derto set the timer on the wished programme. The rotation of the knob 10 is rigidly transmitted to shaft 9 and piston 6 and from this to the rotating portion of the timer through the key 3.
  • knob 10 Upon setting, a further pressure on the knob 10 causes this to move back into the seat 12 while the restraint device operable in two steps holds the piston 6 in the vicinity of the hollow portion bottom. In this position the knob 10 does not protrude from the machine door surface 11, is protected from any accidental shock and cannot be inadvertently rotated such as by children. Furthermore in this not protruding condition it cooperates to a better aspect of the machine. However the knob 10 is still perfectly visible and its observation provides an indication of the progress of the pre-set working programme.
  • the fitting between piston 6 and hollow portion 2 may be precise enough and the control shaft 9 in turn may be efficiently supported in that point where it projects from the hollow portion 2, so that any oscillation of the knob 10 in the "work" forward position can be efficiently prevented.
  • control device has been described as applied to a dishwasher programme timer, it is obvious that such a device can be applied to timers for any different type of household apparatus, as well as to whichever else component to be rotatively controlled, and the knob of which can be advantageously retracted into a seat, provided that such a component allows for a hollow portion at the central zone of its rotating member or can be crossed throughout by an axially movable control shaft.
  • the surface 11 may belong, instead of a door, to a control panel and the seat 12, which is entirely free in the represented embodiment, may be partially occupied by protruding elements adapted to be contained in the rear-side cavity 13 of the knob 10, between its mounting hub on the shaft 9 and its outer skirt, which in some cases may provide a further reduction of the dimensions required for the whole device in the depth direction.
  • the shape of the parts forming the device may be modified to conform to the various application requirements and the various components, especially the restraint device operable in two steps, may be replaced with their technical equivalents.

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

Claims (5)

1. Dispositif de commande rotatif du type comportant un bouton de commande qui peut se déplacer entre une position de travail, dans laquelle il dépasse de la surface environnante, et une position de repos, en retrait par rapport à ladite surface, dans lequel le bouton de commande (10) est fixé à une tige de commande (9) montée de manière à pouvoir se déplacer dans le sens axial, mais à ne pas pouvoir tourner par rapport à la partie rotative d'un élément de machine (1) qui doit être commandé, ladite tige de commande (9) étant reliée en un point situé derrière le bouton de commande (10) à un dispositif de limitation (4, 7) fonctionnant en deux temps qui, lorsqu'une première pression est exercée sur ladite tige (9) par l'intermédiaire du bouton (10), provoque son déplacement vers une position où le bouton (10) se place en retrait de la surface environnante (11) et qui, lorsqu'une seconde pression est exercée, libère un ressort de rappel (8) qui pousse la tige vers une position où le bouton se trouve dans la position saillante de travail, caractérisé en ce que le dispositif de limitation (4, 7) fonctionnant en deux temps pour la commande de la tige (9) est logé dans une partie centrale creuse (2) de la partie rotative de l'élément de machine (1) qui doit être commandé.
2. Dispositif selon la revendication 1, dans lequel la tige de commande (9), à l'extrémité extérieure de laquelle est fixé ledit bouton de commande (10), est reliée, à son extrémité intérieure arrière, à un élément (6) en forme de piston qui peut glisser dans le sens axial dans ladite partie centrale creuse (2) et qui lui est accouplé pour la rotation, au moyen d'un accouplement (3) du type à clavette, ledit élément (6) en forme de piston coopérant avec ledit ressort de rappel (8) pour pousser ledit élément dans une position correspondant à la position saillante du bouton (10), et comportant une partie (7) qui appartient audit dispositif de limitation.
3. Dispositif selon la revendication 2, dans lequel lesdites parties (7) de l'élément (6) en forme de piston qui font partie dudit dispositif de limitation fonctionnant en deux temps comprennent un trajet en retrait coopérant avec une pièce d'accouplement (4) insérée dans la partie rotative (2) de l'élément de machine (1) qui doit être commandé.
4. Dispositif selon la revendication 2, dans lequel ledit ressort de rappel (8) est partiellement logé dans une cavité de l'élément (6) en forme de piston.
5. Dispositif selon la revendication 1, constituant le dispositif de mise en action d'une minuterie programmée (1) d'un appareil ménager tel qu'un lave-vaisselle, un lave-linge, une cuisinière, un four ou appareil équivalent.
EP19830830171 1982-08-26 1983-08-26 Dispositif de contrôle rotatif avec bouton rétractable, en particulier pour appareils ménagers Expired - Lifetime EP0102332B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT5363282 1982-08-26
IT5363182 1982-08-26
IT5363182 1982-08-26
IT5363282 1982-08-26

Publications (4)

Publication Number Publication Date
EP0102332A2 EP0102332A2 (fr) 1984-03-07
EP0102332A3 EP0102332A3 (en) 1985-08-14
EP0102332B1 EP0102332B1 (fr) 1989-03-15
EP0102332B2 true EP0102332B2 (fr) 1993-09-01

Family

ID=26329578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830830171 Expired - Lifetime EP0102332B2 (fr) 1982-08-26 1983-08-26 Dispositif de contrôle rotatif avec bouton rétractable, en particulier pour appareils ménagers

Country Status (3)

Country Link
EP (1) EP0102332B2 (fr)
AU (1) AU1734483A (fr)
DE (1) DE3379435D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2217312A4 (fr) * 2007-11-05 2017-12-06 ResMed Ltd. Système de ventilation et commande de celui-ci

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03111100A (ja) * 1989-09-25 1991-05-10 Toshiba Corp 洗濯機
JP3093256B2 (ja) * 1990-07-06 2000-10-03 旭光学工業株式会社 双眼鏡の調整機構
EP0626705A3 (fr) * 1993-05-28 1995-01-18 Eaton Corp Commutateur combiné rotatif et à bouton-poussoir.
US5438172A (en) * 1993-08-16 1995-08-01 Ford Motor Company Zero backlash position encoder
EP0671681B1 (fr) * 1994-03-09 1998-07-08 Whirlpool Europe B.V. Bouton rotatif et escamotable
DE19545994A1 (de) * 1995-12-09 1997-06-12 Aeg Hausgeraete Gmbh Versenkbare Drehknebeleinheit
DE19548659C1 (de) * 1995-12-18 1997-05-28 Brose Fahrzeugteile Schaltvorrichtung und Verfahren zum Steuern eines fremdkraftbetätigten Verstellantriebs eines Kraftfahrzeugs
DE19610921C2 (de) * 1996-03-20 1999-10-07 Schott Glas Kochgerät
DE29702936U1 (de) * 1997-02-20 1997-04-30 Grässlin KG, 78112 St Georgen Manuelle Schaltvorrichtung für Zeitschaltuhren
DE10008015A1 (de) * 2000-02-22 2001-08-23 Bsh Bosch Siemens Hausgeraete Haushaltsgerät mit einer Zeitschaltereinrichtung
DE102006039196B3 (de) * 2006-08-22 2007-10-11 Miele & Cie. Kg Versenkbarer Bedienknebel für ein Haushaltsgerät mit einer Welle zur Ankoppelung an einen Energiesteller, Wahlschalter oder dergleichen
US8944057B2 (en) 2008-09-17 2015-02-03 Resmed Limited Method and apparatus for controlling a CPAP device
US10739011B2 (en) 2018-09-19 2020-08-11 Midea Group Co., Ltd. Retracting and extending control selectors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100404A (en) * 1961-07-13 1963-08-13 Whirlpool Co Retractable knob device
FR1419775A (fr) * 1964-10-19 1965-12-03 Procedes Sauter Manette de commande rotative pour appareil ménager
US3557637A (en) 1969-07-28 1971-01-26 Gen Motors Corp Control knob
DE2250621C3 (de) * 1972-10-16 1979-09-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Drehknopf für eine EinstellweUe
JPS5930988Y2 (ja) * 1980-11-19 1984-09-03 アルプス電気株式会社 押釦操作軸のプッシュ・プッシュ機構

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2217312A4 (fr) * 2007-11-05 2017-12-06 ResMed Ltd. Système de ventilation et commande de celui-ci

Also Published As

Publication number Publication date
AU1734483A (en) 1984-03-01
DE3379435D1 (en) 1989-04-20
EP0102332A3 (en) 1985-08-14
EP0102332A2 (fr) 1984-03-07
EP0102332B1 (fr) 1989-03-15

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