EP0283449B1 - Sicherheitseinrichtung zur Vermeidung von unbeabsichtigter Verdrehung von Betätigungsgriffen an Gas- oder Elektroherden - Google Patents

Sicherheitseinrichtung zur Vermeidung von unbeabsichtigter Verdrehung von Betätigungsgriffen an Gas- oder Elektroherden Download PDF

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Publication number
EP0283449B1
EP0283449B1 EP88830109A EP88830109A EP0283449B1 EP 0283449 B1 EP0283449 B1 EP 0283449B1 EP 88830109 A EP88830109 A EP 88830109A EP 88830109 A EP88830109 A EP 88830109A EP 0283449 B1 EP0283449 B1 EP 0283449B1
Authority
EP
European Patent Office
Prior art keywords
cover
knob
latch
pin
knobs
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
EP88830109A
Other languages
English (en)
French (fr)
Other versions
EP0283449A1 (de
Inventor
Giuseppe Orosei
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
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Smeg SpA
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Filing date
Publication date
Application filed by Smeg SpA filed Critical Smeg SpA
Publication of EP0283449A1 publication Critical patent/EP0283449A1/de
Application granted granted Critical
Publication of EP0283449B1 publication Critical patent/EP0283449B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Definitions

  • the present invention is directed to a safety device preventing incidental opening of the gas-taps or switches in the gas operated or respectively electric kitchens, hobs or ovens.
  • a simple mechanical device actuated by lowering of the kitchen or hob cover, prevents any control knob from an incidental rotation, whenever the utilization of gas-burners or electric hot-plates is to be excluded, at the same time being avoided a complete lowering of the cover whenever at least one of the controls is not at an "OFF" or "closed” position.
  • GB-A-2177790 discloses a safety device for moving control knobs (taps or switches) of gas-or electric hobs or cookers to the "OFF" position on movement of the hob lid or cover to its closed position and holding any control knob in this "OFF" position whilst the lid remains in its closed position.
  • a complex linkage means comprising levers and a rack with pinion drive for each knob to be controlled.
  • the object of the present invention to provide a safety device which overcomes the above-mentioned drawbacks while being of simple construction and not very expensive, as well as easy to be used. Furthermore, if cooperating with simple locking means, the device of the invention can provide a complete prevention measure against an incidental opening of the gas-taps or electric switches, so as to involve a necessarily voluntary intervention of the user to operate the control knobs.
  • a device comprising an elongated rigid element, substantially bi-dimensional and suitable to be slidably reciprocated in the direction of its length, parallel to and at the inside of a front control panel to which said knobs to be checked are mounted by means of pivotable pins, in association with each knob said element being formed with a shaped opening, whereby said element is moved away, against the bias of a spring, from a first rest position to which it is urged again by said spring whenever all the knobs are at the "OFF” position, there being also provided a means integral with the appliance cover which is adapted to prevent anyone of said knobs from rotating, as they are kept at said "OFF” position, characterized in that said opening has a protruding tongue along part of its periphery, said tongue being able to engage an eccentric cam fixed to said knob pin whenever the knob is at a different position from the "OFF” position, and said means preventing knob rotation controls, with the cover lowered, a downward movement of a latch means with a return spring able to lock said
  • a position of said elongated element different from said rest position, thereby corresponding to at least one knob rotated from "OFF”, causes an abutment against the bottom of said latch means which cannot move downward, thus obstructing the complete closure of the cover which remains partly upraised.
  • the slidable element or slider in its traverse from the rest position as a consequence of the operation of at least one knob causes, by means of a microswitch contact, a circuit to be made which lights a warning lamp provided on the control panel, thus furnishing as a further safety measure a visual signaling of a situation in which at least one tap or switch is "ON".
  • a total realiabiLity is given by the device according to the invention if it is associated with simple cover locking means to keep it closed down, or means for locking the slider at the rest position, so as to render impossible the knob operation unless through an intervention onto proper release means such as push-buttons, locks, etc.
  • the safety device of the invention provides that the rotation pin 4 of each control knob 3 is formed with a cam 5 being equally shaped for all the knobs and having the same orientation when considering the knobs all at the same position.
  • knob as used in this specification means a rotatory control whichsoever (gas-tap, switch or thermostat) suitable to electric or gas-kitchens (and the associate oven) or cooking hobs, electrically or gas operated as well, of the built-in type.
  • knobs 3 are mounted on the control panel of a gas kitchen 1 which in the following will be generally called "appliance" bearing in mind that, within the objects of the invention, no substantial differences would be appreciated if it were an electric range or an electric or gas hob.
  • the device of the invention further comprises an elongated element or slider 6, substantially bi-dimensional, formed of a plate extending throughout almost the whole width of the appliance and being positioned at the inside thereof, out of sight, parallel to the control panel 2, guided for sliding longitudinally with a reciprocating movement, as shown by the double arrow F.
  • the element 6 that will be called “slider” is formed with an opening 7, preferably shaped as an arc of circle having its centre on the rotation axis of pin 4.
  • Opening 7 is also provided, along a portion of its preiphery, a rectilinear tongue 8 outwardly projecting to close at one side the arc portion of opening 7, and having a distance from the centre of the latter which is less than the cam 5 length.
  • the eccentric shape of the cam is such as to allow the same to be normally housed within opening 7 with the knob being at its "OFF" position, but suitable to engage the tongue 8 as soon as the knob is rotated to the direction of arrow G. This engagement does not cause the knob to stop, but the slider 6 to be traversed in either direction of the double arrow F (to the right hand direction in the angle shown).
  • the slider 6 is driven in operation towards the appliance side where is provided the remaining portion of the safety device comprising a pin 11 fixed to the appliance cover 10 and mounted directed downwardly to the lower side of the cover near to a side edge thereof (on the right-hand side in this case) and in proximity of the front edge.
  • a latch means 14, aligned with said pin 11, can slide vertically being guided at the inside of a side 13 of the appliance, so that at a lowered position reached against a spiral spring 15 reaction, its bottom engages, as it is seen in Fig. 2, the right hand side of slider 6 and in particular a portion 16 thereof inwardly bent to such an extent to cause this engagement.
  • the latch 14 is pushed downward under action of the pin 11 with cover 10 completely lowered, preferably through an intermediate rod 12 which during the usual operation extends from the upper plane 18 of the appliance within a through hole 19 thereof guiding its vertical movement.
  • knobs 3 can be rotated in the arrow G direction when cover 10 is raised, as a consequent movement of slider 6 to the right-hand side does not tamper with the latch 14 (see Fig. 1), upon lowering of cover 10 all the knobs must be positioned on "OFF" and the slider 6 at its rest position on the left-hand side, to which it automatically returns under action of the spring 9, no longer stretched as it is shown in Fig. 1.
  • a further visual safety system can be provided, associated to the device of the invention, according to which the slider 6 in its movement due to the working of a knob, i.e. towards the right-hand side in Fig. 1, causes a microswitch 20 to trigger for closing a feeding circuit of a light source 21 which thereby signals turning on of at least one gas-tap or heating of at least one electric plate.
  • the device according to the invention is substantially comprised of simple metallic parts, which in practice cannot be altered or warped through their work and form a mechanism being out of sight as it is housed in the control panel 2, with only the almost negligible exception of pin 11 and partly of the rod 12, both being of very small size.
  • This device is reliable in operation and, above all, does not need to be connected to the electric network, whereby it can work even if the feeding cable of the kitchen or hob (if at least partially electric or, if totally gas operated, for auxiliary services such as oven lighting, etc.) is not plugged in the socket.
  • the additional light signalling as described above can namely be battery-fed.

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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)

Claims (7)

1. Sicherheitseinrichtung zur Vermeidung unbeabsichtiger Verdrehung aus einer Ruhe-oder"Aus"-Stellung von Betätigungsgriffen von Kochherden (1) mit einer Abdeckung (10) wobei die Einrichtung ein im wesentlichen zweidimensional langes Bauelement aufweist, das vorgesehen ist, mit einer Hin- und Herbewegung in seiner Längsrichtung parallel zu und innerhalb eines vorderen Steuerfeldes (2) zu gleiten, an dem die Griffe, um gesichert zu werden, mittels Drehzapfen (4) befestigt sind, dabei in Verbindung mit jedem Griff (3) das Bauelement (6) mit einer ausgeformten Öffnung (7) versehen ist, wobei das Bauelement (6) gegen die Vorspannung einer Feder (9) aus einer ersten Stellung, in der es durch die Feder (9) gegengedrückt wird, wenn alle Griffe in ihrer "Aus"-Stellung sind, wegbewegt wird, und diese auch mit der Abdeckung (10) integrierte Mittel (11) zur Vermeidung irgendeinen der Griffe zu verdrehen, aufweist, wenn sie in der "Aus"-Stellung blockiert sind, dadurch gekennzeichnet, daß die Öffnung (7) eine hervorstehende Zunge (8) entlang eines Teiles ihres Umfanges aufweist, wobei die Zunge in der Lage ist, einen Exzenternocken (5) zu fassen, der am Griffzapfen (4) befestigt ist, wenn der Griff (3) sich in einer von der "Aus"-Stellung unterschiedlichen Stellung befindet, und daß die Mittel mit denen die Abdeckung abgesenkt wird, eine Abwärtsbewegung eines Klinkenmittels (14) mit einer Rückzugfeder (15) steuern, die in der Lage sind, das Bauelement (6) in der Ruhestellung zu blockieren.
2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß in einer Stellung des Bauelementes (6) unterschiedlich zur Ruhestellung und korrespondierend zu wenigstens einem Griff (3), der sich nicht in der "Aus"-Stellung befindet, ein Ende des Bauelementes (6) an der Seite in der Richtung, zu der sich letzteres aus der Ruhestellung bewegt hat, den unteren Abschnitt der Klinke (14) erfaßt, wobei deren Abwärtsbewegung blockiert und das vollständige Absenken der Abdeckung (10) verhindert wird.
3. Einrichtung nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß jeweils eine der Öffnungen (7) bei Ruhestellung des Bauelementes (6) zusätzlich zu der Zunge (8), die im wesentlichen geradlinig und zur Vorderseite des Herdes (1) gerichtet ist, durch einen Kreisbogen mit seiner Mitte auf der Achse des Zapfens begrenzt wird und geeignet ist, den Nocken (5) zu umgeben, während der zugehörige Griff (3) auf "Aus" gestellt ist, wobei der Abstand der Zunge (8) von der Mitte des Kreisbogens geringer ist als die radiale Länge des Nockens (5).
4. Einrichtung nach wenigstens einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß das als Stift ausgebildete, vertikal nach unten gerichtete Mittel (11) an der unteren Seite der Abdeckung (19) nahe der Herdseite, zu der sich das Bauelement (8) im Falle des Verdrehens wenigstens eines Griffes (3) aus der "Aus"-Stellung bewegt, in einem geringen Abstand von der Vorderseite der Abdeckung (10) angeordnet ist, dabei an einem Ende des Bauelementes (6) an derselben Seite des Stiftes (11) ein Bauteil (16) integriert und mit Bauelement (6) vorgesehen ist, das nach innen in einem solchen Abstand gerichtet ist, um einen Anschlag für die untere Stellung der Klinke (14), die zu dem Stift (11) ausgerichtet ist, zu bilden.
5. Einrichtung nach Anspruch 4, dadurch gekennzeichnet, daß unmittelbar oberhalb der Klinke (14) und innerhalb einer Flankenseite (13) des Herdes (1) umgeben, ein Stab (12), der zur Klinke ausgerichtet und frei vertikal verschiebbar ist, zur Übertragung des Gewichtes der Abdeckung (10) zur Klinke (14) durch den Stift (11) vorgesehen ist, wobei die Klinke (14) gegen die Wirkung der Feder (15) zu einer solchen Stellung gedrückt wird, daß deren Boden sich in einer niedrigeren Ebene befindet, als der Abschnitt (16) des Bauelementes (6).
6. Einrichtung nach zumindest Anspruch 1, gekennzeichnet durch einen Mikroschalter (20) zum Schließen einer Zuführschaltung eines Lichtsignals (21) mittels Kontakten, die durch das Bauelement (6) in seiner Bewegung aus der Ruhestellung bei Verdrehen wenigstens eines Griffes (3) gesteuert wird.
7. Einrichtung nach zumindest Anspruch 1, gekennzeichnet durch Verriegelungsmittel zum geschlossenen Niederhalten der Abdeckung (10) oder des Bauelementes (6) in Ruhestellung.
EP88830109A 1987-03-20 1988-03-18 Sicherheitseinrichtung zur Vermeidung von unbeabsichtigter Verdrehung von Betätigungsgriffen an Gas- oder Elektroherden Expired - Lifetime EP0283449B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1978687 1987-03-20
IT8719786A IT1215391B (it) 1987-03-20 1987-03-20 Dispositivo di sicurezza contro l'apertura accidentale dei rubinetti o dei commutatori dicomando nelle cucine o piani di cottura a gas o elettrici.

Publications (2)

Publication Number Publication Date
EP0283449A1 EP0283449A1 (de) 1988-09-21
EP0283449B1 true EP0283449B1 (de) 1991-08-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP88830109A Expired - Lifetime EP0283449B1 (de) 1987-03-20 1988-03-18 Sicherheitseinrichtung zur Vermeidung von unbeabsichtigter Verdrehung von Betätigungsgriffen an Gas- oder Elektroherden

Country Status (4)

Country Link
EP (1) EP0283449B1 (de)
DE (1) DE3864429D1 (de)
ES (1) ES2025330B3 (de)
IT (1) IT1215391B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101762600B1 (ko) 2016-06-01 2017-07-31 린나이코리아 주식회사 전기레인지 노브 고정장치
US11788730B2 (en) 2022-02-25 2023-10-17 Whirlpool Corporation Knob mechanism for gas cooktop

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE514194C2 (sv) * 1992-09-18 2001-01-22 Electrolux Ab Huvudströmbrytare vid en elektrisk hushållsapparat
ES2587457B1 (es) * 2015-04-22 2017-08-11 Bsh Electrodomésticos España, S.A. Módulo para un aparato doméstico y aparato doméstico

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2116885A (en) * 1936-06-29 1938-05-10 Joseph B Friedman Gas range
US2390234A (en) * 1943-05-31 1945-12-04 Applebaum Milton Safety lockable cover for gas ranges
US2777316A (en) * 1953-06-23 1957-01-15 Mello Albert Safety attachment for a stove
GB8513678D0 (en) * 1985-05-30 1985-07-03 Ti New World Ltd Cookers & hobs
GB2181534B (en) * 1985-06-24 1988-07-27 New World Domestic Appliances Improvements in or relating to cookers and hobs
GB8622529D0 (en) * 1986-09-18 1986-10-22 Thorn Emi Appliances Domestic cooking appliance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101762600B1 (ko) 2016-06-01 2017-07-31 린나이코리아 주식회사 전기레인지 노브 고정장치
US11788730B2 (en) 2022-02-25 2023-10-17 Whirlpool Corporation Knob mechanism for gas cooktop

Also Published As

Publication number Publication date
EP0283449A1 (de) 1988-09-21
IT1215391B (it) 1990-02-08
ES2025330B3 (es) 1992-03-16
DE3864429D1 (de) 1991-10-02
IT8719786A0 (it) 1987-03-20

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