EP0648994A1 - Locking device for oven door - Google Patents

Locking device for oven door Download PDF

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Publication number
EP0648994A1
EP0648994A1 EP94420246A EP94420246A EP0648994A1 EP 0648994 A1 EP0648994 A1 EP 0648994A1 EP 94420246 A EP94420246 A EP 94420246A EP 94420246 A EP94420246 A EP 94420246A EP 0648994 A1 EP0648994 A1 EP 0648994A1
Authority
EP
European Patent Office
Prior art keywords
door
female element
male rod
oven
locking members
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
EP94420246A
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German (de)
French (fr)
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EP0648994B1 (en
Inventor
Raymond Violi
Jean-François Ferbus
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.)
Societe Cooperative de Production Bourgeois SCOP
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Societe Cooperative de Production Bourgeois SCOP
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Publication date
Application filed by Societe Cooperative de Production Bourgeois SCOP filed Critical Societe Cooperative de Production Bourgeois SCOP
Publication of EP0648994A1 publication Critical patent/EP0648994A1/en
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Publication of EP0648994B1 publication Critical patent/EP0648994B1/en
Anticipated expiration legal-status Critical
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/02—Automatic catches, i.e. released by pull or pressure on the wing
    • E05C19/022—Released by pushing in the closing direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/18—Door frames; Doors, lids, removable covers
    • F27D1/1858—Doors

Definitions

  • the present invention relates to devices for hooking and locking an oven door in the closed position, and unlocking it by operating a door handle or a control device.
  • the oven door locks are usually produced by a hook placed either on the door or on the oven muffle and engaging on a fixed element of the other part.
  • Document FR-A-2 639 096 describes such a device.
  • Document FR-A-2 653 212 describes an oven door locking structure in which a male rod projects perpendicularly from the contact face of the door, and a female housing is fitted in the oven muffle.
  • the male rod and the female housing are shaped and arranged so that the male rod enters the female housing when the door is pressed against the opening of the block to close it.
  • the male rod has an annular groove.
  • the female housing has an elastic pin whose branches are arranged in the transverse direction and engage in the male rod groove to lock it in the closed position. Locking or unlocking is done by simply pushing or pulling the door. As a result, such locking is insufficient for use in a steam oven, in which the oven enclosure may contain steam under pressure.
  • the problem proposed by the present invention is to design a new locking device structure, which has both greater reliability, lower production cost, a simple possibility of controlling the internal organs of the oven, and which is compatible with a possibility of transmission of fluids from the inside of the oven muffle to the inside of the door.
  • this new structure must be easy to unlock, and compatible with means ensuring the traction of the oven door to reinforce its closing after its locking.
  • the male rod is fixedly mounted on the oven door
  • the pusher is slidably mounted on the oven door and is actuated by a handle of the oven door.
  • the male rod and the female element are provided with a through axial bore connected to respective pipes to allow a passage of fluid between the muffle and the oven door.
  • the female element comprises auxiliary locking members coming to engage elastically in the groove when the rod is in an intermediate pre-opening position in which the door is slightly ajar and retained by said auxiliary locking members engaged in the throat. The door can then be opened by voluntary traction producing the output of the auxiliary locking members out of the groove.
  • the locking device according to the invention makes it possible to lock an oven door 1 against an oven block 2, the contact face 3 of the door 1 coming to bear on one face of corresponding contact 4 of the muffle 2.
  • the locking device comprises a male rod 5 which projects perpendicularly from the contact face of the first of the two elements constituted by the door 1 and the block 2.
  • the male rod 5 protrudes from the contact face 3 of the door 1 to which it is integral.
  • a female element 6 is fitted on the second of the two elements constituted by the door 1 and the muffle 2.
  • the female element 6 is fitted on the muffle 2.
  • the male rod 5 and the female element 6 are shaped and arranged so that the male rod 5 penetrates into the female element 6 when the door 1 is applied against the opening of the block 2 to close it.
  • the female element 6 has an internal bore 7 in which the male rod 5 can slide.
  • the male rod 5 comprises at least one intermediate annular groove 8 with steep edges, for example of rectangular section.
  • the female element 6 comprises locking members 9 that can be moved radially between a locking position as illustrated in FIGS. 1 and 2 in which they can enter the groove 8 to prevent axial sliding of the male rod 5, and a unlocking position in which they exit from the groove 8 and the internal bore 7 to allow the axial sliding of the male rod 5.
  • the locking members 9 are resiliently biased towards their locking position.
  • the female element 6 comprises an unlocking ring 10, which slides axially on the female element 6 and which is shaped to radially move the locking members 9 between their locking position and their unlocking position during its axial movement.
  • the unlocking ring 10 may be integral with a ramp 11 which comes to bear against a part of the locking members 9 to make them come out of the internal bore 7 during the movement of the ring 10 away from the male rod 5.
  • Elastic means such as a compression spring 12 urge the unlocking ring 10 towards its locking position in which the locking members 9 come into the locking position.
  • a pusher 13 is fitted on the first of the two elements constituted by the door 1 and the block 2: in the embodiments shown, the pusher 13 is adapted on the door 1. It is shaped to move by axial translation, and move the unlocking ring 10 itself in translation on the female element 6 and produce the unlocking.
  • the male rod 5 is fixedly mounted on the oven door 1, and the pusher 13 is slidably mounted on the oven door. It can be actuated directly by a pusher head 14, or indirectly by an oven door handle.
  • the pusher 13 in the embodiment shown, comprises a pusher head 14 connected by a rod 17 to a support plate 18.
  • the support plate 18 is connected to an internal thrust ring 19 by three columns such as the columns 20 and 21 slidably mounted in the oven door 1 and distributed around the male rod 5.
  • the internal thrust ring 19 comes to bear on the unlocking ring 10.
  • a spring 23 urges the pusher 13 apart of the release ring 10.
  • the female element 6 comprises, in its internal bore 7, a core 15 sliding freely in the bore and intended to be pushed back by the male rod 5 against an electrical switching device 16 to close an electrical contact for controlling the internal parts of the oven when the male rod 5 comes into the locking position as shown in FIG. 2.
  • the female element 6 is mounted fixed on the block 2.
  • the device of the embodiment of Figures 3 and 4 includes the same elements as those of the device of Figures 1 and 2, and these elements are identified by the same reference numerals.
  • the female element 6 comprises auxiliary locking members 22 such as balls urged radially in the direction of the axis of the internal bore 7 of the female element 6.
  • the locking members auxiliaries 22 are engaged elastically in the groove 8 when the male rod 5 is in an intermediate pre-opening position shown in FIG. 5, in which the door 1 is slightly ajar and retained by said auxiliary members 22 engaged in the groove 8. The door 1 can then be opened by voluntary traction producing the output of the auxiliary locking members 22 out of the groove 8.
  • the open positions of the Figure 3 and closed in Figure 4 are identical to those of Figures 1 and 2 of the previous embodiment.
  • door 1 The elements carried by door 1 are identical.
  • This embodiment is distinguished by the fact that the female element 6 is slidably mounted on the block 2, and is driven axially by a motor or a jack 24.
  • the female element 6 in the open position as shown in FIG. 6, l the female element 6 is slightly pulled out of the muffle 2.
  • the male rod 5 is engaged in the female element 6, the latter comes to bear against the core 15 which causes the operation of a motor power switch or jack 24, which then moves the female element 6 inwards, pulling at the same time the female element 6, the male rod 5 and the door 1, in order to increase the pressure force of the door 1 against the block 2, as shown in FIG. 7.
  • Manual disengaging means are provided for uncoupling the female element 6 relative to the motor or jack 24.
  • the male rod 5 and the female element 6 can be adapted either to constitute solid elements, or to constitute hollow elements.
  • the male rod 5 and the female element 6 are provided with a through axial bore connected to respective pipes to allow a passage of fluid between the muffle 2 and the oven door 1.
  • the door is locked by simple pushing of the door 1 in the direction of the block 2, to engage the male rod 5 in the bottom of the female element 6 until the members 9 lock into the groove 8.
  • the unlocking is carried out by pushing the pusher 13, whose internal thrust ring 13 bears against the unlocking ring 10 and pushes it towards the muffle 2.
  • the unlocking ring 10 separates the locking members 9 from the internal bore 7 and from the groove 8, so that the door 1 can be removed away from the block 2.
  • the opening is carried out in two stages: after unlocking, the door 1 moves back until the auxiliary locking members 22 enter the groove 8 and retain thus the door in the pre-opening position; a pull on the door 1 then ensures the opening by forcing the auxiliary locking members 22 to come out of the groove 8 and to release the door.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Electric Ovens (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

The device according to the invention comprises a male rod (post) (5) fixed to the door (1) and engaging in a female element (6) fixed to the muffle (2) of the oven. The female element (6) comprises locking members (9) which can move radially to engage in an intermediate groove (8) of the male rod (5) when the door is closed. Unlocking takes place by maneouvering a push-button (13) which pushes back an internal bearing annulus (19) which bears against an unlocking ring (10) which itself urges the locking members (9) away from the internal bore (7) of the female element (6) in order to get them out of the groove (8) of the male rod (5). <IMAGE>

Description

La présente invention concerne les dispositifs permettant l'accrochage et le verrouillage d'une porte de four en position fermée, et son déverrouillage par manoeuvre d'une poignée de porte ou d'un dispositif de commande.The present invention relates to devices for hooking and locking an oven door in the closed position, and unlocking it by operating a door handle or a control device.

Les verrouillages de porte de four sont habituellement réalisés par un crochet disposé soit sur la porte soit sur le moufle du four et venant s'engager sur un élément fixe de l'autre partie.The oven door locks are usually produced by a hook placed either on the door or on the oven muffle and engaging on a fixed element of the other part.

Le document FR-A-2 639 096 décrit un tel dispositif.Document FR-A-2 639 096 describes such a device.

Une telle structure connue, qui donne satisfaction dans les cas habituels, s'avère toutefois relativement onéreuse, notamment lorsqu'il s'agit d'adapter des moyens de commande automatique des organes internes du four, commandés par le verrouillage de la porte. En outre, ces dispositifs ne permettent pas le passage de fluides depuis l'intérieur du moufle de four jusqu'à l'intérieur de la porte.Such a known structure, which is satisfactory in the usual cases, however proves relatively expensive, especially when it comes to adapting means for automatic control of the internal organs of the oven, controlled by the locking of the door. In addition, these devices do not allow the passage of fluids from the interior of the oven muffle to the interior of the door.

Le document FR-A-2 653 212 décrit une structure de verrouillage de porte de four dans laquelle une tige mâle dépasse perpendiculairement de la face de contact de la porte, et un logement femelle est adapté dans le moufle du four. La tige mâle et le logement femelle sont conformés et disposés de façon que la tige mâle pénètre dans le logement femelle lorsque la porte est appliquée contre l'ouverture du moufle pour l'obturer. La tige mâle comporte une gorge annulaire. Le logement femelle comporte une épingle élastique dont les branches sont disposées dans le sens transversal et s'engagent dans la gorge de tige mâle pour la verrouiller en position de fermeture. Le verrouillage ou le déverrouillage s'effectue par simple poussée ou traction de la porte. Il en résulte qu'un tel verrouillage est insuffisant pour une utilisation dans un four à vapeur, dans lequel l'enceinte du four peut contenir de la vapeur sous pression.Document FR-A-2 653 212 describes an oven door locking structure in which a male rod projects perpendicularly from the contact face of the door, and a female housing is fitted in the oven muffle. The male rod and the female housing are shaped and arranged so that the male rod enters the female housing when the door is pressed against the opening of the block to close it. The male rod has an annular groove. The female housing has an elastic pin whose branches are arranged in the transverse direction and engage in the male rod groove to lock it in the closed position. Locking or unlocking is done by simply pushing or pulling the door. As a result, such locking is insufficient for use in a steam oven, in which the oven enclosure may contain steam under pressure.

Le problème proposé par la présente invention est de concevoir une nouvelle structure de dispositif de verrouillage, qui présente à la fois une plus grande fiabilité, un plus faible coût de production, une possibilité simple de commande des organes internes du four, et qui soit compatible avec une possibilité de transmission de fluides depuis l'intérieur de moufle de four jusqu'à l'intérieur de la porte. En outre, cette nouvelle structure doit être facile à déverrouiller, et compatible avec des moyens assurant la traction de la porte de four pour renforcer sa fermeture après son verrouillage.The problem proposed by the present invention is to design a new locking device structure, which has both greater reliability, lower production cost, a simple possibility of controlling the internal organs of the oven, and which is compatible with a possibility of transmission of fluids from the inside of the oven muffle to the inside of the door. In addition, this new structure must be easy to unlock, and compatible with means ensuring the traction of the oven door to reinforce its closing after its locking.

Pour cela, selon l'invention, le dispositif de verrouillage d'une porte de four dont la face de contact vient en appui sur une face de contact correspondante d'un moufle de four est tel que :

  • une tige mâle dépasse perpendiculairement de la face de contact du premier des deux éléments constitués par la porte et le moufle,
  • un élément femelle est adapté sur le second des deux éléments constitués par la porte et le moufle,
  • la tige mâle et l'élément femelle sont conformés et disposés de façon que la tige mâle pénètre dans l'élément femelle lorsque la porte est appliquée contre l'ouverture du moufle pour l'obturer,
  • la tige mâle comporte au moins une gorge annulaire intermédiaire,
  • l'élément femelle comporte des organes de verrouillage déplaçables radialement entre une position de verrouillage dans laquelle ils pénètrent dans l'alésage interne et dans la gorge de tige mâle pour interdire le coulissement axial de la tige mâle, et une position de déverrouillage dans laquelle ils sortent de l'alésage interne et de la gorge pour autoriser le coulissement axial de la tige mâle,
  • l'élément femelle comporte une bague de déverrouillage, coulissant axialement sur l'élément femelle et conformée pour déplacer radialement les organes de verrouillage entre leur position de verrouillage et leur position de déverrouillage lors de son déplacement axial,
  • des moyens élastiques sollicitent la bague de déverrouillage vers sa position de verrouillage dans laquelle les organes de verrouillage viennent en position de verrouillage,
  • un poussoir est adapté sur le premier des deux éléments constitués par la porte et le moufle, et est conformé pour déplacer la bague de déverrouillage en translation sur l'élément femelle et produire le déverrouillage.
For this, according to the invention, the locking device of an oven door whose contact face comes to bear on a corresponding contact face of an oven block is such that:
  • a male rod protrudes perpendicularly from the contact face of the first of the two elements constituted by the door and the block,
  • a female element is fitted on the second of the two elements constituted by the door and the block,
  • the male rod and the female element are shaped and arranged so that the male rod enters the female element when the door is applied against the opening of the block to close it,
  • the male rod has at least one intermediate annular groove,
  • the female element comprises locking members which can be moved radially between a locking position in which they enter the internal bore and in the male rod groove to prevent axial sliding of the male rod, and an unlocking position in which they come out of the internal bore and the groove to allow the male rod to slide axially,
  • the female element comprises an unlocking ring, sliding axially on the female element and shaped to radially move the locking members between their locking position and their unlocking position during its axial displacement,
  • elastic means urge the unlocking ring towards its locking position in which the locking members come into the locking position,
  • a pusher is fitted to the first of the two elements constituted by the door and the block, and is shaped to move the unlocking ring in translation on the female element and produce unlocking.

Selon un mode de réalisation, la tige mâle est montée fixe sur la porte de four, et le poussoir est monté coulissant sur la porte de four et est actionné par une poignée de porte de four.According to one embodiment, the male rod is fixedly mounted on the oven door, and the pusher is slidably mounted on the oven door and is actuated by a handle of the oven door.

Selon une réalisation avantageuse, la tige mâle et l'élément femelle sont pourvus d'un alésage axial traversant raccordé à des canalisations respectives pour permettre un passage de fluide entre le moufle et la porte de four.According to an advantageous embodiment, the male rod and the female element are provided with a through axial bore connected to respective pipes to allow a passage of fluid between the muffle and the oven door.

Selon une réalisation avantageuse, l'élément femelle comprend des organes de blocage auxiliaires venant s'engager élastiquement dans la gorge lorsque la tige est en une position intermédiaire de préouverture dans laquelle la porte est légèrement entrouverte et retenue par lesdits organes de blocage auxiliaires engagés dans la gorge. La porte peut alors être ouverte par traction volontaire produisant la sortie des organes de blocage auxiliaires hors de la gorge.According to an advantageous embodiment, the female element comprises auxiliary locking members coming to engage elastically in the groove when the rod is in an intermediate pre-opening position in which the door is slightly ajar and retained by said auxiliary locking members engaged in the throat. The door can then be opened by voluntary traction producing the output of the auxiliary locking members out of the groove.

D'autres objets, caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation particuliers, faite en relation avec les figures jointes, parmi lesquelles:

  • la figure 1 est une vue de côté en coupe longitudinale d'un dispositif de verrouillage selon un mode de réalisation de l'invention, adapté sur une porte et un moufle de four, en position ouverte ;
  • la figure 2 est une vue de côté en coupe longitudinale du dispositif de la figure 1, en position verrouillée ;
  • la figure 3 est une vue de côté en coupe longitudinale d'un dispositif de verrouillage selon un second mode de réalisation de l'invention, en position ouverte, comportant des organes de blocage auxiliaires ;
  • la figure 4 est une vue de côté en coupe longitudinale du dispositif de verrouillage de la figure 3, en position verrouillée ;
  • la figure 5 est une vue de côté en coupe longitudinale du dispositif de la figure 3, en position de préouverture ;
  • la figure 6 est une vue de côté en coupe longitudinale d'un dispositif de verrouillage selon un autre mode de réalisation de l'invention, en position ouverte ; et
  • la figure 7 est une vue de côté en coupe longitudinale du dispositif de la figure 6, en position verrouillée.
Other objects, characteristics and advantages of the present invention will emerge from the following description of particular embodiments, given in relation to the attached figures, among which:
  • Figure 1 is a side view in longitudinal section of a locking device according to an embodiment of the invention, adapted on a door and an oven block, in the open position;
  • Figure 2 is a side view in longitudinal section of the device of Figure 1, in the locked position;
  • Figure 3 is a side view in longitudinal section of a locking device according to a second embodiment of the invention, in the open position, comprising auxiliary locking members;
  • Figure 4 is a side view in longitudinal section of the locking device of Figure 3, in the locked position;
  • Figure 5 is a side view in longitudinal section of the device of Figure 3, in the pre-opening position;
  • Figure 6 is a side view in longitudinal section of a locking device according to another embodiment of the invention, in the open position; and
  • Figure 7 is a side view in longitudinal section of the device of Figure 6, in the locked position.

Dans tous les modes de réalisation représentés sur les figures, le dispositif de verrouillage selon l'invention permet de verrouiller une porte de four 1 contre un moufle de four 2, la face de contact 3 de la porte 1 venant en appui sur une face de contact correspondante 4 du moufle 2.In all the embodiments shown in the figures, the locking device according to the invention makes it possible to lock an oven door 1 against an oven block 2, the contact face 3 of the door 1 coming to bear on one face of corresponding contact 4 of the muffle 2.

Le dispositif de verrouillage comprend une tige mâle 5 qui dépasse perpendiculairement de la face de contact du premier des deux éléments constitués par la porte 1 et le moufle 2. Dans les modes de réalisation représentés, la tige mâle 5 dépasse de la face de contact 3 de la porte 1 dont elle est solidaire.The locking device comprises a male rod 5 which projects perpendicularly from the contact face of the first of the two elements constituted by the door 1 and the block 2. In the modes of shown embodiment, the male rod 5 protrudes from the contact face 3 of the door 1 to which it is integral.

Un élément femelle 6 est adapté sur le second des deux éléments constitués par la porte 1 et le moufle 2. Ainsi, dans les modes de réalisation représentés, l'élément femelle 6 est adapté sur le moufle 2.A female element 6 is fitted on the second of the two elements constituted by the door 1 and the muffle 2. Thus, in the embodiments shown, the female element 6 is fitted on the muffle 2.

On pourra, sans sortir du cadre de la présente invention, placer la tige mâle 5 sur le moufle 2 et adapter l'élément femelle 6 sur la porte 1.Without departing from the scope of the present invention, it is possible to place the male rod 5 on the muffle 2 and adapt the female element 6 to the door 1.

La tige mâle 5 et l'élément femelle 6 sont conformés et disposés de façon que la tige mâle 5 pénètre dans l'élément femelle 6 lorsque la porte 1 est appliquée contre l'ouverture du moufle 2 pour l'obturer. Pour cela, l'élément femelle 6 comporte un alésage interne 7 dans lequel la tige mâle 5 peut coulisser.The male rod 5 and the female element 6 are shaped and arranged so that the male rod 5 penetrates into the female element 6 when the door 1 is applied against the opening of the block 2 to close it. For this, the female element 6 has an internal bore 7 in which the male rod 5 can slide.

La tige mâle 5 comporte au moins une gorge annulaire intermédiaire 8 à bords abrupts, par exemple à section rectangulaire.The male rod 5 comprises at least one intermediate annular groove 8 with steep edges, for example of rectangular section.

L'élément femelle 6 comporte des organes de verrouillage 9 déplaçables radialement entre une position de verrouillage telle qu'illustrée sur les figures 1 et 2 dans laquelle ils peuvent pénétrer dans la gorge 8 pour interdire le coulissement axial de la tige mâle 5, et une position de déverrouillage dans laquelle ils sortent de la gorge 8 et de l'alésage interne 7 pour autoriser le coulissement axial de la tige mâle 5. Les organes de verrouillage 9 sont sollicités élastiquement en direction de leur position de verrouillage.The female element 6 comprises locking members 9 that can be moved radially between a locking position as illustrated in FIGS. 1 and 2 in which they can enter the groove 8 to prevent axial sliding of the male rod 5, and a unlocking position in which they exit from the groove 8 and the internal bore 7 to allow the axial sliding of the male rod 5. The locking members 9 are resiliently biased towards their locking position.

L'élément femelle 6 comporte une bague de déverrouillage 10, qui coulisse axialement sur l'élément femelle 6 et qui est conformée pour déplacer radialement les organes de verrouillage 9 entre leur position de verrouillage et leur position de déverrouillage lors de son déplacement axial. Par exemple, la bague de déverrouillage 10 peut être solidaire d'une rampe 11 qui vient porter contre une partie des organes de verrouillage 9 pour les faire sortir hors de l'alésage interne 7 lors du déplacement de la bague 10 à l'écart de la tige mâle 5.The female element 6 comprises an unlocking ring 10, which slides axially on the female element 6 and which is shaped to radially move the locking members 9 between their locking position and their unlocking position during its axial movement. For example, the unlocking ring 10 may be integral with a ramp 11 which comes to bear against a part of the locking members 9 to make them come out of the internal bore 7 during the movement of the ring 10 away from the male rod 5.

Des moyens élastiques tels qu'un ressort de compression 12 sollicitent la bague de déverrouillage 10 vers sa position de verrouillage dans laquelle les organes de verrouillage 9 viennent en position de verrouillage.Elastic means such as a compression spring 12 urge the unlocking ring 10 towards its locking position in which the locking members 9 come into the locking position.

Un poussoir 13 est adapté sur le premier des deux éléments constitués par la porte 1 et le moufle 2 : dans les modes de réalisation représentés, le poussoir 13 est adapté sur la porte 1. Il est conformé pour se déplacer par translation axiale, et déplacer la bague de déverrouillage 10 elle-même en translation sur l'élément femelle 6 et produire le déverrouillage.A pusher 13 is fitted on the first of the two elements constituted by the door 1 and the block 2: in the embodiments shown, the pusher 13 is adapted on the door 1. It is shaped to move by axial translation, and move the unlocking ring 10 itself in translation on the female element 6 and produce the unlocking.

Dans les modes de réalisation qui ont été représentés, la tige mâle 5 est montée fixe sur la porte 1 de four, et le poussoir 13 est monté coulissant sur la porte de four. Il peut être actionné directement par une tête de poussée 14, ou indirectement par une poignée de porte de four.In the embodiments which have been shown, the male rod 5 is fixedly mounted on the oven door 1, and the pusher 13 is slidably mounted on the oven door. It can be actuated directly by a pusher head 14, or indirectly by an oven door handle.

Le poussoir 13, dans le mode de réalisation représenté, comprend une tête de poussée 14 reliée par une tige 17 à une platine d'appui 18. La platine d'appui 18 est reliée à une couronne interne de poussée 19 par trois colonnes telles que les colonnes 20 et 21 montées à coulissement dans la porte 1 de four et réparties autour de la tige mâle 5. La couronne interne de poussée 19 vient en appui sur la bague de déverrouillage 10. Un ressort 23 sollicite le poussoir 13 à l'écart de la bague de déverrouillage 10.The pusher 13, in the embodiment shown, comprises a pusher head 14 connected by a rod 17 to a support plate 18. The support plate 18 is connected to an internal thrust ring 19 by three columns such as the columns 20 and 21 slidably mounted in the oven door 1 and distributed around the male rod 5. The internal thrust ring 19 comes to bear on the unlocking ring 10. A spring 23 urges the pusher 13 apart of the release ring 10.

Sur les figures, l'élément femelle 6 comprend, dans son alésage interne 7, un noyau 15 coulissant librement dans l'alésage et destiné à être repoussé par la tige mâle 5 contre un dispositif commutateur électrique 16 pour fermer un contact électrique de commande des organes internes du four lorsque la tige mâle 5 vient en position de verrouillage comme représenté sur la figure 2.In the figures, the female element 6 comprises, in its internal bore 7, a core 15 sliding freely in the bore and intended to be pushed back by the male rod 5 against an electrical switching device 16 to close an electrical contact for controlling the internal parts of the oven when the male rod 5 comes into the locking position as shown in FIG. 2.

Dans le mode de réalisation des figures 1 et 2, l'élément femelle 6 est monté fixe sur le moufle 2.In the embodiment of FIGS. 1 and 2, the female element 6 is mounted fixed on the block 2.

Le dispositif du mode de réalisation des figures 3 et 4 comprend les mêmes éléments que ceux du dispositif des figures 1 et 2, et ces éléments sont repérés par les mêmes références numériques.The device of the embodiment of Figures 3 and 4 includes the same elements as those of the device of Figures 1 and 2, and these elements are identified by the same reference numerals.

En outre, dans ce mode de réalisation, l'élément femelle 6 comprend des organes de blocage auxiliaires 22 tels que des billes sollicitées radialement en direction de l'axe de l'alésage interne 7 de l'élément femelle 6. Les organes de blocage auxiliaires 22 viennent s'engager élastiquement dans la gorge 8 lorsque la tige mâle 5 est en une position intermédiaire de préouverture représentée sur la figure 5, dans laquelle la porte 1 est légèrement entrouverte et retenue par lesdits organes auxiliaires 22 engagés dans la gorge 8. La porte 1 peut alors être ouverte par traction volontaire produisant la sortie des organes de blocage auxiliaires 22 hors de la gorge 8. Les positions ouverte de la figure 3 et fermée de la figure 4 sont identiques à celles des figures 1 et 2 du mode de réalisation précédent.In addition, in this embodiment, the female element 6 comprises auxiliary locking members 22 such as balls urged radially in the direction of the axis of the internal bore 7 of the female element 6. The locking members auxiliaries 22 are engaged elastically in the groove 8 when the male rod 5 is in an intermediate pre-opening position shown in FIG. 5, in which the door 1 is slightly ajar and retained by said auxiliary members 22 engaged in the groove 8. The door 1 can then be opened by voluntary traction producing the output of the auxiliary locking members 22 out of the groove 8. The open positions of the Figure 3 and closed in Figure 4 are identical to those of Figures 1 and 2 of the previous embodiment.

Le dispositif illustré sur les figures 6 et 7 reprend les mêmes éléments que le dispositif des figures 1 et 2, et les éléments correspondants sont repérés par les mêmes références numériques.The device illustrated in Figures 6 and 7 uses the same elements as the device in Figures 1 and 2, and the corresponding elements are identified by the same reference numerals.

Les éléments portés par la porte 1 sont identiques.The elements carried by door 1 are identical.

Ce mode de réalisation se distingue par le fait que l'élément femelle 6 est monté à coulissement sur le moufle 2, et est entraîné axialement par un moteur ou un vérin 24. Ainsi, en position ouverte telle que représentée sur la figure 6, l'élément femelle 6 est légèrement sorti hors du moufle 2. Lorsqu'on engage la tige mâle 5 dans l'élément femelle 6, celle-ci vient porter contre le noyau 15 qui provoque le fonctionnement d'un commutateur d'alimentation du moteur ou vérin 24, qui déplace alors l'élément femelle 6 vers l'intérieur, tirant à la fois l'élément femelle 6, la tige mâle 5 et la porte 1, pour augmenter la force de pression de la porte 1 contre le moufle 2, comme le représente la figure 7. On prévoit des moyens de débrayage manuel pour désaccoupler l'élément femelle 6 par rapport au moteur ou vérin 24.This embodiment is distinguished by the fact that the female element 6 is slidably mounted on the block 2, and is driven axially by a motor or a jack 24. Thus, in the open position as shown in FIG. 6, l the female element 6 is slightly pulled out of the muffle 2. When the male rod 5 is engaged in the female element 6, the latter comes to bear against the core 15 which causes the operation of a motor power switch or jack 24, which then moves the female element 6 inwards, pulling at the same time the female element 6, the male rod 5 and the door 1, in order to increase the pressure force of the door 1 against the block 2, as shown in FIG. 7. Manual disengaging means are provided for uncoupling the female element 6 relative to the motor or jack 24.

Dans tous les modes de réalisation qui ont été représentés, la tige mâle 5 et l'élément femelle 6 peuvent être adaptés soit pour constituer des éléments pleins, soit pour constituer des éléments creux. Dans ce dernier cas, la tige mâle 5 et l'élément femelle 6 sont pourvus d'un alésage axial traversant raccordé à des canalisations respectives pour permettre un passage de fluide entre le moufle 2 et la porte de four 1.In all the embodiments which have been shown, the male rod 5 and the female element 6 can be adapted either to constitute solid elements, or to constitute hollow elements. In the latter case, the male rod 5 and the female element 6 are provided with a through axial bore connected to respective pipes to allow a passage of fluid between the muffle 2 and the oven door 1.

Dans tous les modes de réalisation, le verrouillage de la porte s'effectue par simple poussée de la porte 1 en direction du moufle 2, pour engager la tige mâle 5 dans le fond de l'élément femelle 6 jusqu'à ce que les organes de verrouillage 9 pénètrent dans la gorge 8. Le déverrouillage s'effectue en poussant le poussoir 13, dont la couronne interne de poussée 13 vient en appui contre la bague de déverrouillage 10 et la repousse en direction du moufle 2. Par sa translation, la bague de déverrouillage 10 écarte les organes de verrouillage 9 hors de l'alésage interne 7 et de la gorge 8, de sorte que la porte 1 peut être retirée à l'écart du moufle 2. Dans le mode de réalisation des figures 3 à 5, l'ouverture s'effectue en deux temps : après le déverrouillage, la porte 1 recule jusqu'à ce que les organes de blocage auxiliaires 22 pénètrent dans la gorge 8 et retiennent ainsi la porte en position de préouverture ; une traction sur la porte 1 assure ensuite l'ouverture en forçant les organes de blocage auxiliaires 22 à sortir de la gorge 8 et à libérer la porte.In all embodiments, the door is locked by simple pushing of the door 1 in the direction of the block 2, to engage the male rod 5 in the bottom of the female element 6 until the members 9 lock into the groove 8. The unlocking is carried out by pushing the pusher 13, whose internal thrust ring 13 bears against the unlocking ring 10 and pushes it towards the muffle 2. By its translation, the unlocking ring 10 separates the locking members 9 from the internal bore 7 and from the groove 8, so that the door 1 can be removed away from the block 2. In the embodiment of FIGS. 3 to 5 , the opening is carried out in two stages: after unlocking, the door 1 moves back until the auxiliary locking members 22 enter the groove 8 and retain thus the door in the pre-opening position; a pull on the door 1 then ensures the opening by forcing the auxiliary locking members 22 to come out of the groove 8 and to release the door.

La présente invention n'est pas limitée aux modes de réalisation qui ont été explicitement décrits, mais elle en inclut les diverses variantes et généralisations contenues dans le domaine des revendications ci-après.The present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof contained in the field of claims below.

Claims (9)

1 - Dispositif de verrouillage d'une porte (1) de four dont la face de contact (3) vient en appui sur une face de contact correspondante (4) d'un moufle (2) de four, dans lequel : - une tige mâle (5) dépasse perpendiculairement de la face de contact (3, 4) du premier des deux éléments constitués par la porte (1) et le moufle (2), - un élément femelle (6) est adapté sur le second des deux éléments constitués par la porte (1) et le moufle (2), - la tige mâle (5) et l'élément femelle (6) sont conformés et disposés de façon que la tige mâle (5) pénètre dans l'élément femelle (6) lorsque la porte (1) est appliquée contre l'ouverture du moufle (2) pour l'obturer, - la tige mâle (5) comporte au moins une gorge annulaire intermédiaire (8), - l'élément femelle (6) comporte des organes de verrouillage (9) déplaçables radialement entre une position de verrouillage dans laquelle ils pénètrent dans l'alésage interne (7) et dans la gorge (8) de tige mâle pour interdire le coulissement axial de la tige mâle (5), et une position de déverrouillage dans laquelle ils sortent de l'alésage interne (7) et de la gorge (8) pour autoriser le coulissement axial de la tige mâle (5), caractérisé en ce que : - l'élément femelle (6) comporte une bague de déverrouillage (10), coulissant axialement sur l'élément femelle (6) et conformée pour déplacer radialement les organes de verrouillage (9) entre leur position de verrouillage et leur position de déverrouillage lors de son déplacement axial, - des moyens élastiques (12) sollicitent la bague de déverrouillage (10) vers sa position de verrouillage dans laquelle les organes de verrouillage (9) viennent en position de verrouillage, - un poussoir (13) est adapté sur le premier des deux éléments constitués par la porte (1) et le moufle (2), et est conformé pour déplacer la bague de déverrouillage (10) en translation sur l'élément femelle (6) et produire le déverrouillage. 1 - Device for locking a door (1) of an oven, the contact face (3) of which bears on a corresponding contact face (4) of a muffle (2) of an oven, in which: - a male rod (5) projects perpendicularly from the contact face (3, 4) of the first of the two elements constituted by the door (1) and the block (2), - a female element (6) is fitted on the second of the two elements constituted by the door (1) and the block (2), - the male rod (5) and the female element (6) are shaped and arranged so that the male rod (5) penetrates into the female element (6) when the door (1) is applied against the opening of the block (2) for sealing it, the male rod (5) has at least one intermediate annular groove (8), - the female element (6) comprises locking members (9) movable radially between a locking position in which they penetrate into the internal bore (7) and into the groove (8) of the male rod to prevent axial sliding of the male rod (5), and an unlocking position in which they exit from the internal bore (7) and from the groove (8) to allow the axial sliding of the male rod (5), characterized in that: - the female element (6) comprises an unlocking ring (10), sliding axially on the female element (6) and shaped to radially move the locking members (9) between their locking position and their unlocking position during of its axial displacement, elastic means (12) urge the unlocking ring (10) towards its locking position in which the locking members (9) come into the locking position, - A pusher (13) is fitted on the first of the two elements constituted by the door (1) and the block (2), and is shaped to move the unlocking ring (10) in translation on the female element (6) and produce the unlock. 2 - Dispositif selon la revendication 1, caractérisé en ce que la tige mâle (5) est montée fixe sur la porte de four (1), et le poussoir (13) est monté coulissant sur la porte (1) de four et est actionné par une poignée de porte de four. 2 - Device according to claim 1, characterized in that the male rod (5) is fixedly mounted on the oven door (1), and the pusher (13) is slidably mounted on the door (1) of the oven and is actuated by an oven door handle. 3 - Dispositif selon la revendication 2, caractérisé en ce que l'élément femelle (6) comprend, dans son alésage interne (7), un dispositif commutateur électrique (16) actionné par la tige mâle (5), pour fermer un contact électrique de commande des organes internes du four lorsque la tige mâle (5) vient en position de verrouillage. 3 - Device according to claim 2, characterized in that the female element (6) comprises, in its internal bore (7), an electrical switch device (16) actuated by the male rod (5), to close an electrical contact for controlling the internal organs of the oven when the male rod (5) comes into the locking position. 4 - Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la tige mâle (5) et l'élément femelle (6) sont pourvus d'un alésage axial traversant raccordé à des canalisations respectives pour permettre un passage de fluide entre le moufle (2) et la porte de four (1). 4 - Device according to any one of claims 1 to 3, characterized in that the male rod (5) and the female element (6) are provided with a through axial bore connected to respective pipes to allow passage of fluid between the muffle (2) and the oven door (1). 5 - Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'élément femelle (6) comprend des organes de blocage auxiliaires (22) venant s'engager élastiquement dans la gorge (8) lorsque la tige mâle (5) est en une position intermédiaire de préouverture dans laquelle la porte (1) est légèrement entrouverte et retenue par lesdits organes de blocage auxiliaires (22) engagés dans la gorge (8), la porte (1) pouvant alors être ouverte par traction volontaire produisant la sortie des organes de blocage auxiliaires (22) hors de la gorge (8). 5 - Device according to any one of claims 1 to 4, characterized in that the female element (6) comprises auxiliary locking members (22) coming to engage elastically in the groove (8) when the male rod ( 5) is in an intermediate pre-opening position in which the door (1) is slightly ajar and retained by said auxiliary locking members (22) engaged in the groove (8), the door (1) can then be opened by voluntary traction producing the output of the auxiliary locking members (22) out of the groove (8). 6 - Dispositif selon la revendication 5, caractérisé en ce que les organes de blocage auxiliaires (22) comprennent des billes sollicitées élastiquement en direction de l'axe de l'élément femelle (6). 6 - Device according to claim 5, characterized in that the auxiliary locking members (22) comprise balls resiliently biased towards the axis of the female element (6). 7 - Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'un ressort (23) sollicite le poussoir (13) à l'écart de la bague de déverrouillage (10). 7 - Device according to any one of claims 1 to 6, characterized in that a spring (23) biases the plunger (13) away from the unlocking ring (10). 8 - Dispositif selon la revendication 7, caractérisé en ce que le poussoir (13) comprend une tête de poussée (14) reliée par une tige (17) à une platine d'appui (18) elle-même reliée à une couronne interne de poussée (19) par trois colonnes (20, 21) montées à coulissement dans la porte (1) de four et réparties autour de la tige mâle (5), la couronne interne de poussée (19) venant en appui sur la bague de déverrouillage (10). 8 - Device according to claim 7, characterized in that the pusher (13) comprises a pusher head (14) connected by a rod (17) to a support plate (18) itself connected to an internal crown of thrust (19) by three columns (20, 21) slidably mounted in the oven door (1) and distributed around the male rod (5), the internal thrust ring (19) coming to bear on the unlocking ring (10). 9 - Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'un moteur ou un vérin (24) tire celui de la tige mâle (5) ou de l'élément femelle (6) qui est monté à coulissement sur le moufle de four (2), des moyens de débrayage manuel étant prévus pour désaccoupler l'élément femelle (6) par rapport au moteur ou vérin (24). 9 - Device according to any one of claims 1 to 8, characterized in that a motor or a jack (24) pulls that of the male rod (5) or the female element (6) which is slidably mounted on the oven block (2), manual declutching means being provided for uncoupling the female element (6) relative to the motor or jack (24).
EP19940420246 1993-09-17 1994-09-15 Locking device for oven door Expired - Lifetime EP0648994B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9311247 1993-09-17
FR9311247A FR2710141B1 (en) 1993-09-17 1993-09-17 Oven door locking device.

Publications (2)

Publication Number Publication Date
EP0648994A1 true EP0648994A1 (en) 1995-04-19
EP0648994B1 EP0648994B1 (en) 1998-02-04

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Application Number Title Priority Date Filing Date
EP19940420246 Expired - Lifetime EP0648994B1 (en) 1993-09-17 1994-09-15 Locking device for oven door

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EP (1) EP0648994B1 (en)
CA (1) CA2132025C (en)
DE (1) DE69408393D1 (en)
FR (1) FR2710141B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0833027A2 (en) * 1996-09-27 1998-04-01 ANTONIO MERLONI S.p.A. Device for the opening and closing of doors or the like, especially in electrical domestic appliances or the like
CN110455083A (en) * 2019-09-10 2019-11-15 哈尔滨博实自动化股份有限公司 High-temperature furnace door full-automatic open-close system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112595123A (en) * 2020-12-15 2021-04-02 安徽理工大学 Heating furnace door device with stable and quick opening and closing functions

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL292941A (en) *
FR2025598A1 (en) * 1968-12-07 1970-09-11 Licentia Gmbh
US3576340A (en) * 1969-07-03 1971-04-27 Data Technology Corp Latch for disc pack protective cover
FR2653212A1 (en) * 1989-10-13 1991-04-19 Bonnet Sa Oven and locking device equipping the door of the latter
DE4134201C1 (en) * 1991-10-16 1992-11-12 Bayerische Motoren Werke Ag, 8000 Muenchen, De Covered internal trimming fixture for car bodywork - uses form-fitting snap arrangement allowing release without damage for servicing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL292941A (en) *
FR2025598A1 (en) * 1968-12-07 1970-09-11 Licentia Gmbh
US3576340A (en) * 1969-07-03 1971-04-27 Data Technology Corp Latch for disc pack protective cover
FR2653212A1 (en) * 1989-10-13 1991-04-19 Bonnet Sa Oven and locking device equipping the door of the latter
DE4134201C1 (en) * 1991-10-16 1992-11-12 Bayerische Motoren Werke Ag, 8000 Muenchen, De Covered internal trimming fixture for car bodywork - uses form-fitting snap arrangement allowing release without damage for servicing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0833027A2 (en) * 1996-09-27 1998-04-01 ANTONIO MERLONI S.p.A. Device for the opening and closing of doors or the like, especially in electrical domestic appliances or the like
EP0833027A3 (en) * 1996-09-27 1998-04-15 ANTONIO MERLONI S.p.A. Device for the opening and closing of doors or the like, especially in electrical domestic appliances or the like
CN110455083A (en) * 2019-09-10 2019-11-15 哈尔滨博实自动化股份有限公司 High-temperature furnace door full-automatic open-close system

Also Published As

Publication number Publication date
DE69408393D1 (en) 1998-03-12
FR2710141A1 (en) 1995-03-24
FR2710141B1 (en) 1995-12-01
CA2132025C (en) 1999-03-09
CA2132025A1 (en) 1995-03-18
EP0648994B1 (en) 1998-02-04

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