EP1561885A1 - Protection device for a tumbler of a door lock - Google Patents

Protection device for a tumbler of a door lock Download PDF

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Publication number
EP1561885A1
EP1561885A1 EP05002343A EP05002343A EP1561885A1 EP 1561885 A1 EP1561885 A1 EP 1561885A1 EP 05002343 A EP05002343 A EP 05002343A EP 05002343 A EP05002343 A EP 05002343A EP 1561885 A1 EP1561885 A1 EP 1561885A1
Authority
EP
European Patent Office
Prior art keywords
groove
bolt
protective device
protection plate
tail
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
EP05002343A
Other languages
German (de)
French (fr)
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EP1561885B1 (en
Inventor
Alain Lartisien
Thierry Farcy
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.)
Bricard SAS
Original Assignee
Bricard SAS
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Filing date
Publication date
Application filed by Bricard SAS filed Critical Bricard SAS
Publication of EP1561885A1 publication Critical patent/EP1561885A1/en
Application granted granted Critical
Publication of EP1561885B1 publication Critical patent/EP1561885B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/20—Means independent of the locking mechanism for preventing unauthorised opening, e.g. for securing the bolt in the fastening position
    • E05B17/2084—Means to prevent forced opening by attack, tampering or jimmying
    • E05B17/2092—Means responsive to tampering or attack providing additional locking
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/0017—Locks with sliding bolt without provision for latching

Definitions

  • the present invention relates, on the one hand, to a device for protection of a groove of a door lock, and secondly, to a lock of door equipped with such a protective device.
  • a burglar wishing to penetrate inside a local begins by fracturing the barrel to extract it from the lock box of door. Once this task has been completed, the burglar has access to internal organs of the lock and can therefore easily proceed to unlocking the bolt previously housed in the striker fixed in the door jamb to protect. For this, the burglar raises the throat whose teeth cooperate with the teeth presented by the tail of the bolt. The The bolt is no longer locked in translation and the burglar can place it in his rest position.
  • the present invention aims to solve the problem mentioned previously, and for this purpose consists of a device for protecting a throat a door lock, said groove being provided to be arranged on one side of a tail of a locking bolt and being fit, under the action of a first elastic return means, to come into engagement with presented teeth by the tail of the locking bolt, characterized in that it comprises a protective plate intended to be positioned on the other side of the tail of the bolt and designed to have at least one suitable protuberance, under the effect of at least one second elastic return means, to come to bear against an associated stop element in the groove, this second elastic return means being suitable, if the protuberance is disengaged from its associated abutment element, to force said protective plate to rotate around an axis in order to position said protuberance on the trajectory of the tail of the bolt.
  • a protection device according to the invention is therefore active since it is suitable for effectively counteract such an attempted break-in.
  • the second means of elastic return is achieved using a torsion spring.
  • the latter has a branch designed to come to bear against the protection plate.
  • a groove is formed along the edge top of the protection plate in order to receive the spring branch of torsion. It should be understood that a side compression spring could be used in place of such a torsion spring.
  • the associated abutment element has a substantially flat contact surface.
  • a shoulder is advantageously arranged in the throat.
  • the protrusion of the protective plate includes a tooth extended by a lug adapted to be inserted between the shoulder and the stop element arranged in the throat.
  • the protection plate can not rotate in one direction or another.
  • the protection plate comprises a substantially oblong light traversed by the axis about which said plate protection can rotate.
  • a clearance is preferably provided at the rear of the end of the locking bolt to allow the pivoting of the plate protection.
  • the present invention also relates to a lock of door comprising a trunk crossed by a barrel provided with a bit rotational mobile housed in the trunk, characterized in that it comprises a protection device according to the invention.
  • a door lock 1 as shown in FIG. FIG. 1, comprises a box 2 made with the aid of two flanges 3 assembled to one another.
  • This chest 2 is attached to a headrest 4, and contains the parts well known to those skilled in the art usually used to ensure the locking and unlocking a locking bolt 5 extended by a tail 9 provided with teeth 17.
  • each flange 3 comprises, in the lower part, a central opening 6 adapted to the section of a barrel 7, the latter presenting a first portion 8 and a second portion (not shown) separated one on the other by a medial bit 10 rotating in rotation.
  • the bit 10 is housed in said trunk 2, and the first part 8 and the second part of the barrel 7 protrude respectively on one side and the other of said box 2.
  • the bit 10 is intended to cooperate with a 11 when it is rotated by means of a key 40 introduced into the barrel 7.
  • this groove 11 is constituted by a plate having an inner face 12 arranged on one side of the tail 9 of the bolt 5.
  • This groove 11 has an oblong light 13 crossed by a transverse axis 14 integral with the trunk 2.
  • the groove 11 comprises, on the one hand, a protruding shoulder 15 in which is dug a recess 16 in order to constitute a housing adapted to cooperate with the teeth 17 of the tail 9 of the bolt 5, and secondly, a stop element 18, separated from the shoulder 15, and having a substantially planar contact surface 19.
  • This shoulder 15 is surmounted by a stud 20 on which is centered a first end of a compression spring 21, the latter also having a second end bearing against a fixed element of the door lock 1.
  • a protection plate 22 provided with an inner face 24 is attached facing the groove 11, on the other side of the tail 9 of the bolt 5.
  • This plate of protection 22 has an oblong slot through which the axis 14 passes. transversal solidaire 2.
  • the protection plate 22 has a protuberance 26 comprising a tooth 27 extended by a lug 28.
  • a groove 29 parallel to the tail 9 of the bolt 5 is dug at the top of the protrusion 26 and constitutes a housing apt to accommodate a first branch 30 of a torsion spring 31 placed around a fixed element 32 integral with the door lock 1.
  • the second branch 33 of this torsion spring 31 is provided for abut against the return 34 of one of the two flanges 3.
  • This element fixed 32 overhangs the groove 11 and the protective plate 22, and is offset from them.
  • the groove 11 and the protection plate 22 are returned, respectively by the compression spring 21 and the torsion spring 31, towards the tail 9 of the bolt 5.
  • one of the teeth 17 of the 9 of the bolt 5 is housed in the recess 16 presented by the shoulder 15 of the groove 11 so as to lock the bolt 5 in translation
  • the tooth 27 of the protrusion 26 rests on the tail 9 of the bolt 5
  • the lug 28 of the protrusion 26 is inserted between the shoulder 15 and the abutment member 18 arranged in the groove 11. More precisely, the lug 28 is intended to come resting against the substantially flat contact surface 19 of the element of stop 18.
  • the teeth 17 of the tail 9 of the bolt 5 are disengaged from the groove 11, and the locking bolt 5 can then be driven in translation by said bit 10 during the second half of his race.
  • the groove 11 and the protection plate 22 are then driven by a movement of translation downwards under the effect of the compression spring 21 and the spring torsion 31 which gradually relax.
  • the bit 10 has reached the lowest point, one of the teeth 17 of the tail 9 of the bolt 5 is housed in the recess 16 of the groove 11, and it follows that the bolt 5 is blocked in translation.
  • the groove 11 and the protective plate 22 remain stationary one relative to the other, and consequently the lug 28 remains in support against the contact surface 19 of the abutment element 18.

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  • Lock And Its Accessories (AREA)

Abstract

The device has a guard plate (22) on one side of a tailing (9) of a bolt (5). The plate has a protrusion (26) supporting against an associated stop unit (18) of a gorge using a torsion spring (31). The spring forces the guard plate to pivot around an axle (14) if the protrusion is disengaged from the stop unit, to position the protrusion on the tailing path. An INDEPENDENT CALIM is also included for a door lock.

Description

La présente invention se rapporte, d'une part, à un dispositif de protection d'une gorge d'une serrure de porte, et d'autre part, à une serrure de porte équipée d'un tel dispositif de protection.The present invention relates, on the one hand, to a device for protection of a groove of a door lock, and secondly, to a lock of door equipped with such a protective device.

Bien souvent, un cambrioleur désirant pénétrer à l'intérieur d'un local commence par fracturer le barillet afin de l'extraire du coffre de la serrure de porte. Une fois que cette tâche a été accomplie, le cambrioleur a accès aux organes internes de la serrure et peut donc facilement procéder au déverrouillage du pêne jusqu'alors logé dans la gâche fixée dans le chambranle de la porte à protéger. Pour cela, le cambrioleur soulève la gorge dont les dents coopèrent avec les dents présentées par la queue du pêne. Le pêne n'est donc plus bloqué en translation et le cambrioleur peut le placer dans sa position de repos.Very often, a burglar wishing to penetrate inside a local begins by fracturing the barrel to extract it from the lock box of door. Once this task has been completed, the burglar has access to internal organs of the lock and can therefore easily proceed to unlocking the bolt previously housed in the striker fixed in the door jamb to protect. For this, the burglar raises the throat whose teeth cooperate with the teeth presented by the tail of the bolt. The The bolt is no longer locked in translation and the burglar can place it in his rest position.

Pour lutter contre de telles effractions, il est déjà connu de positionner la queue du pêne entre deux moitiés distinctes constitutives d'une gorge mobile en translation verticale- Par conséquent, le cambrioleur sera gêné dans sa tentative d'effraction puisqu'il devra nécessairement soulever les deux moitiés simultanément s'il veut libérer le pêne. Néanmoins, si un tel dispositif permet effectivement de retarder l'ouverture de la porte, il ne constitue aucunement un dispositif de protection actif apte à stopper une effraction en cours.To fight against such break-ins, it is already known to position the tail of the bolt between two separate halves constituting a movable throat in vertical translation- Therefore, the burglar will be embarrassed in his attempted break-in since he will necessarily have to lift both halves simultaneously if he wants to release the bolt. Nevertheless, if such a device actually allows to delay the opening of the door, it does not constitute In any case, an active protection device capable of stopping a break in Classes.

La présente invention a pour but de résoudre le problème évoqué précédemment, et consiste pour cela en un dispositif de protection d'une gorge d'une serrure de porte, ladite gorge étant prévue pour être disposée d'un côté d'une queue d'un pêne de condamnation et étant apte, sous l'action d'un premier moyen de rappel élastique, à venir en prise avec des dents présentées par la queue du pêne de condamnation, caractérisé en ce qu'il comprend une plaque de protection prévue pour être positionnée de l'autre côté de la queue du pêne et conçue de façon à présenter au moins une protubérance apte, sous l'effet d'au moins un deuxième moyen de rappel élastique, à venir en appui contre un élément de butée associé ménagé dans la gorge, ce deuxième moyen de rappel élastique étant apte, si la protubérance est désengagée de son élément de butée associé, à forcer ladite de plaque de protection à pivoter autour d'un axe afin de positionner ladite protubérance sur la trajectoire de la queue du pêne.The present invention aims to solve the problem mentioned previously, and for this purpose consists of a device for protecting a throat a door lock, said groove being provided to be arranged on one side of a tail of a locking bolt and being fit, under the action of a first elastic return means, to come into engagement with presented teeth by the tail of the locking bolt, characterized in that it comprises a protective plate intended to be positioned on the other side of the tail of the bolt and designed to have at least one suitable protuberance, under the effect of at least one second elastic return means, to come to bear against an associated stop element in the groove, this second elastic return means being suitable, if the protuberance is disengaged from its associated abutment element, to force said protective plate to rotate around an axis in order to position said protuberance on the trajectory of the tail of the bolt.

Ainsi, au cours d'une tentative d'effraction, si le cambrioleur désaccouple la protubérance de son élément de butée associé, la plaque de protection sera amenée à pivoter autour d'un axe de façon à ce que la protubérance interdise tout retour en arrière du pêne de condamnation. Un dispositif de protection selon l'invention est donc actif puisqu'il est apte à contrer efficacement une telle tentative d'effraction.So, during an attempted break-in, if the burglar uncouples the protrusion of its associated abutment element, the plate of protection will be rotated around an axis so that the protuberance prohibits any return back of the locking bolt. A protection device according to the invention is therefore active since it is suitable for effectively counteract such an attempted break-in.

Selon un mode de réalisation préférée, le deuxième moyen de rappel élastique est réalisé à l'aide d'un ressort de torsion.According to a preferred embodiment, the second means of elastic return is achieved using a torsion spring.

Avantageusement, ce dernier présente une branche conçue pour venir en appui contre la plaque de protection.Advantageously, the latter has a branch designed to come to bear against the protection plate.

Avantageusement encore, une rainure est ménagée en bordure supérieure de la plaque de protection afin de recevoir la branche du ressort de torsion. Il doit être bien compris qu'un ressort de compression latéral pourrait être employé à la place d'un tel ressort de torsion.Advantageously, a groove is formed along the edge top of the protection plate in order to receive the spring branch of torsion. It should be understood that a side compression spring could be used in place of such a torsion spring.

Préférentiellement, l'élément de butée associé présente une surface de contact sensiblement plane. De plus, un épaulement est avantageusement ménagé dans la gorge.Preferably, the associated abutment element has a substantially flat contact surface. In addition, a shoulder is advantageously arranged in the throat.

Selon une variante de réalisation préférée de l'invention, la protubérance de la plaque de protection comprend une dent prolongée par un ergot prévu pour être inséré entre l'épaulement et l'élément de butée ménagés dans la gorge. Ainsi, en fonctionnement normal, la plaque de protection ne peut pivoter ni dans un sens ni dans un autre.According to a preferred embodiment of the invention, the protrusion of the protective plate includes a tooth extended by a lug adapted to be inserted between the shoulder and the stop element arranged in the throat. Thus, in normal operation, the protection plate can not rotate in one direction or another.

Préférentiellement encore, la plaque de protection comporte une lumière sensiblement oblongue traversée par l'axe autour duquel ladite plaque de protection peut pivoter.Preferably again, the protection plate comprises a substantially oblong light traversed by the axis about which said plate protection can rotate.

De plus, un dégagement est de préférence ménagé à l'arrière de la queue du pêne de condamnation pour permettre le pivotement de la plaque de protection.In addition, a clearance is preferably provided at the rear of the end of the locking bolt to allow the pivoting of the plate protection.

La présente invention se rapporte également à une serrure de porte comprenant un coffre traversé par un barillet pourvu d'un panneton mobile en rotation logé dans le coffre, caractérisé en ce qu'elle comprend un dispositif de protection selon l'invention.The present invention also relates to a lock of door comprising a trunk crossed by a barrel provided with a bit rotational mobile housed in the trunk, characterized in that it comprises a protection device according to the invention.

L'invention sera mieux comprise à l'aide de la description détaillée qui est exposée ci-dessous en regard du dessin annexé dans lequel :

  • La figure 1 est une vue en perspective tronquée d'une serrure de porte équipée d'un dispositif de protection selon l'invention.
  • La figure 2 est une vue à échelle agrandie de la face interne de la plaque de protection de la serrure de porte représentée à la figure 1.
  • La figure 3 est une vue à échelle agrandie de la face interne de la gorge de la serrure de porte représentée à la figure 1.
  • Les figures 4 et 5 sont des vues avant et arrière d'un ensemble comprenant le pêne de condamnation sur lequel sont rapportées la gorge et la plaque de protection.
  • La figure 6 est une vue en perspective de l'ensemble représenté aux figures 4 et 5, lorsque seule la plaque de protection est soulevée.
  • La figure 7 est une vue en perspective de l'ensemble représenté aux figures 4 et 5, lorsque seule la gorge est soulevée.
  • La figure 8 est une vue en perspective de l'ensemble représenté aux figures 4 et 5, au cours du pivotement de la plaque de protection.
  • La figure 9 est une vue en perspective de l'ensemble représenté aux figures 4 et 5, après que la plaque de protection a totalement pivoté.
    • The invention will be better understood with the aid of the detailed description which is set out below with reference to the appended drawing in which:
  • Figure 1 is a truncated perspective view of a door lock equipped with a protection device according to the invention.
  • FIG. 2 is a view on an enlarged scale of the internal face of the protective plate of the door lock shown in FIG.
  • FIG. 3 is an enlarged view of the internal face of the groove of the door lock shown in FIG.
  • Figures 4 and 5 are front and rear views of an assembly comprising the locking bolt on which are reported the groove and the protective plate.
  • Figure 6 is a perspective view of the assembly shown in Figures 4 and 5, when only the protection plate is raised.
  • Figure 7 is a perspective view of the assembly shown in Figures 4 and 5, when only the groove is raised.
  • Figure 8 is a perspective view of the assembly shown in Figures 4 and 5 during the pivoting of the protective plate.
  • Figure 9 is a perspective view of the assembly shown in Figures 4 and 5, after the guard plate is fully rotated.

    • Une serrure de porte 1 selon l'invention, telle que représentée à la figure 1, comporte un coffre 2 réalisé à l'aide de deux flasques 3 assemblés l'un à l'autre. Ce coffre 2 est rattaché à une têtière 4, et renferme les pièces bien connues de l'homme du métier habituellement utilisées pour assurer le verrouillage et le déverrouillage d'un pêne 5 de condamnation prolongé par une queue 9 pourvue de dents 17.A door lock 1 according to the invention, as shown in FIG. FIG. 1, comprises a box 2 made with the aid of two flanges 3 assembled to one another. This chest 2 is attached to a headrest 4, and contains the parts well known to those skilled in the art usually used to ensure the locking and unlocking a locking bolt 5 extended by a tail 9 provided with teeth 17.

    Plus précisément, chaque flasque 3 comporte, en partie basse, une ouverture centrale 6 adaptée à la section d'un barillet 7, ce dernier présentant une première partie 8 et une seconde partie (non représentée) séparées l'une de l'autre par un panneton 10 médian mobile en rotation.More specifically, each flange 3 comprises, in the lower part, a central opening 6 adapted to the section of a barrel 7, the latter presenting a first portion 8 and a second portion (not shown) separated one on the other by a medial bit 10 rotating in rotation.

    Une fois que le barillet 7 est correctement engagé dans le coffre 2, le panneton 10 est logé dans ledit coffre 2, et la première partie 8 et la seconde partie du barillet 7 font saillie respectivement d'un côté et de l'autre dudit coffre 2. De façon classique, le panneton 10 est destiné à coopérer avec une gorge 11 lorsqu'il est entraíné en rotation à l'aide d'une clé 40 introduite dans le barillet 7.Once the barrel 7 is correctly engaged in the trunk 2, the bit 10 is housed in said trunk 2, and the first part 8 and the second part of the barrel 7 protrude respectively on one side and the other of said box 2. In a conventional manner, the bit 10 is intended to cooperate with a 11 when it is rotated by means of a key 40 introduced into the barrel 7.

    Comme représenté aux figures 1 et 3 à 5, cette gorge 11 est constituée par une plaque possédant une face interne 12 disposée d'un côté de la queue 9 du pêne 5. Cette gorge 11 présente une lumière 13 oblongue traversée par un axe 14 transversal solidaire du coffre 2. De plus, en partie haute de sa face interne 12, la gorge 11 comprend, d'une part, un épaulement 15 faisant saillie dans lequel est creusé un évidement 16 afin de constituer un logement apte à coopérer avec les dents 17 de la queue 9 du pêne 5, et d'autre part, un élément de butée 18, séparé de l'épaulement 15, et présentant une surface de contact 19 sensiblement plane. Cet épaulement 15 est surmonté par un téton 20 sur lequel est centrée une première extrémité d'un ressort de compression 21, ce dernier possédant également une seconde extrémité en appui contre un élément fixe de la serrure de porte 1.As shown in FIGS. 1 and 3 to 5, this groove 11 is constituted by a plate having an inner face 12 arranged on one side of the tail 9 of the bolt 5. This groove 11 has an oblong light 13 crossed by a transverse axis 14 integral with the trunk 2. In addition, partly high of its inner face 12, the groove 11 comprises, on the one hand, a protruding shoulder 15 in which is dug a recess 16 in order to constitute a housing adapted to cooperate with the teeth 17 of the tail 9 of the bolt 5, and secondly, a stop element 18, separated from the shoulder 15, and having a substantially planar contact surface 19. This shoulder 15 is surmounted by a stud 20 on which is centered a first end of a compression spring 21, the latter also having a second end bearing against a fixed element of the door lock 1.

    Comme représenté plus particulièrement aux figures 1, 2, 4 et 5, une plaque de protection 22 pourvue d'une face interne 24 est rapportée face à la gorge 11, de l'autre côté de la queue 9 du pêne 5. Cette plaque de protection 22 présente une lumière 25 oblongue traversée par l'axe 14 transversal solidaire du coffre 2. Par ailleurs, en partie haute de sa face interne 24, la plaque de protection 22 présente une protubérance 26 comprenant une dent 27 prolongée par un ergot 28.As shown more particularly in FIGS. 1, 2, 4 and 5, a protection plate 22 provided with an inner face 24 is attached facing the groove 11, on the other side of the tail 9 of the bolt 5. This plate of protection 22 has an oblong slot through which the axis 14 passes. transversal solidaire 2. Also, in the upper part of his face internal 24, the protection plate 22 has a protuberance 26 comprising a tooth 27 extended by a lug 28.

    De plus, une rainure 29 parallèle à la queue 9 du pêne 5 est creusée au sommet de la protubérance 26 et constitue un logement apte à accueillir une première branche 30 d'un ressort de torsion 31 placé autour d'un élément fixe 32 solidaire de la serrure de porte 1. Comme représenté à la figure 1, la seconde branche 33 de ce ressort de torsion 31 est prévue pour venir en butée contre le retour 34 de l'un des deux flasques 3. Cet élément fixe 32 surplombe la gorge 11 ainsi que la plaque de protection 22, et est décalé par rapport à ces dernières.In addition, a groove 29 parallel to the tail 9 of the bolt 5 is dug at the top of the protrusion 26 and constitutes a housing apt to accommodate a first branch 30 of a torsion spring 31 placed around a fixed element 32 integral with the door lock 1. As shown in FIG. 1, the second branch 33 of this torsion spring 31 is provided for abut against the return 34 of one of the two flanges 3. This element fixed 32 overhangs the groove 11 and the protective plate 22, and is offset from them.

    Comme représenté aux figures 1, 4 et 5, en fonctionnement normal, la gorge 11 et la plaque de protection 22 sont renvoyées, respectivement par le ressort de compression 21 et le ressort de torsion 31, vers la queue 9 du pêne 5. Dans cette position, l'une des dents 17 de la queue 9 du pêne 5 est logée dans l'évidement 16 présenté par l'épaulement 15 de la gorge 11 de façon à bloquer le pêne 5 en translation, la dent 27 de la protubérance 26 repose sur la queue 9 du pêne 5, et l'ergot 28 de la protubérance 26 est inséré entre l'épaulement 15 et l'élément de butée 18 ménagés dans la gorge 11. Plus précisément, l'ergot 28 est prévu pour venir en appui contre la surface de contact 19 sensiblement plane de l'élément de butée 18.As shown in FIGS. 1, 4 and 5, in operation normal, the groove 11 and the protection plate 22 are returned, respectively by the compression spring 21 and the torsion spring 31, towards the tail 9 of the bolt 5. In this position, one of the teeth 17 of the 9 of the bolt 5 is housed in the recess 16 presented by the shoulder 15 of the groove 11 so as to lock the bolt 5 in translation, the tooth 27 of the protrusion 26 rests on the tail 9 of the bolt 5, and the lug 28 of the protrusion 26 is inserted between the shoulder 15 and the abutment member 18 arranged in the groove 11. More precisely, the lug 28 is intended to come resting against the substantially flat contact surface 19 of the element of stop 18.

    Comme on peut le déduire de la figure 1, lorsqu'une personne introduit la clé 40 dans le barillet 7 afin de verrouiller ou déverrouiller le pêne 5, le panneton 10 logé dans le coffre 2 est entraíné en rotation, ou bien dans le sens des aiguilles d'une montre, ou bien dans le sens trigonométrique, et vient simultanément au contact de la gorge 11 et de la plaque de protection 22. Durant la première moitié de sa course, le panneton 10 exerce des contraintes en partie basse de la gorge 11 et de la plaque de protection 22, et provoque le déplacement en translation vers te haut de ces dernières à l'encontre respectivement du ressort de compression 21 et du ressort de torsion 31. Au cours de cette translation vers le haut, la gorge 11 et la plaque de protection 22 restent immobiles l'une par rapport à l'autre, et il en découle que l'ergot 28 demeure en appui contre la surface de contact 19 de l'élément de butée 18. Lorsque le panneton 10 atteint le point le plus haut les dents 17 de la queue 9 du pêne 5 sont désengagées de la gorge 11, et le pêne de condamnation 5 peut alors être entraíné en translation par ledit panneton 10 au cours de la seconde moitié de sa course. Durant cette seconde moitié de course, la gorge 11 et la plaque de protection 22 sont alors animées d'un mouvement de translation vers le bas sous l'effet du ressort de compression 21 et du ressort de torsion 31 qui se détendent progressivement. Lorsque le panneton 10 a atteint le point le plus bas, l'une des dents 17 de la queue 9 du pêne 5 est logée dans l'évidement 16 de la gorge 11, et il en découle que le pêne 5 est bloqué en translation. De même que précédemment, durant cette translation vers le bas, la gorge 11 et la plaque de protection 22 restent immobiles l'une par rapport à l'autre, et par conséquent l'ergot 28 demeure en appui contre la surface de contact 19 de l'élément de butée 18.As can be seen from Figure 1, when a person introduced the key 40 into the barrel 7 in order to lock or unlock the bolt 5, the bit 10 housed in the trunk 2 is rotated, or in the clockwise, or counterclockwise, and comes simultaneously in contact with the groove 11 and the protection plate 22. During the first half of its race, the bit 10 exerts constraints in the lower part of the groove 11 and the protection plate 22, and causes the displacement in translation towards the top of the latter against respectively of the compression spring 21 and the torsion spring 31. Au during this upward translation, the groove 11 and the protection plate 22 remain motionless relative to each other, and it follows that the spigot 28 remains in abutment against the contact surface 19 of the abutment element 18. When the blade 10 reaches the highest point, the teeth 17 of the tail 9 of the bolt 5 are disengaged from the groove 11, and the locking bolt 5 can then be driven in translation by said bit 10 during the second half of his race. During this second half of the race, the the groove 11 and the protection plate 22 are then driven by a movement of translation downwards under the effect of the compression spring 21 and the spring torsion 31 which gradually relax. When the bit 10 has reached the lowest point, one of the teeth 17 of the tail 9 of the bolt 5 is housed in the recess 16 of the groove 11, and it follows that the bolt 5 is blocked in translation. As before, during this translation down, the groove 11 and the protective plate 22 remain stationary one relative to the other, and consequently the lug 28 remains in support against the contact surface 19 of the abutment element 18.

    En revanche, au cours d'une tentative d'effraction, le risque que le cambrioleur réussisse à déplacer simultanément la gorge 11 et la plaque de protection 22 est très faible. En effet, compte tenu des faibles dimensions de la surface de contact 19 de l'élément de butée 18, le moindre déplacement relatif de la plaque de protection 22 par rapport à la gorge 11, comme représenté à la figure 6, ou bien de la gorge 11 par rapport à la plaque de protection 22, comme représenté à la figure 7, provoque le désengagement de l'ergot 28 de l'élément de butée 18. La plaque de protection 22 est alors entraínée en rotation par la première branche 30 du ressort de torsion 31 qui cherche à se détendre. Comme représenté à la figure 8, pour permettre le libre pivotement de la plaque de protection 22 autour de l'axe 14, un dégagement 34 est avantageusement ménagé à l'arrière de la queue 9 du pêne 5. Enfin, comme représenté à la figure 9, lorsque la plaque de protection 22 a totalement pivoté autour de l'axe 14, la dent 27 se retrouve sur la trajectoire de la queue 9 du pêne 5 et interdit donc tout retour en arrière de ce dernier. Un tel dispositif de protection de la gorge 11 de la serrure de porte 1 permet donc bien de lutter efficacement contre les tentatives d'effraction.On the other hand, during an attempted break-in, the risk that the burglar manages to simultaneously move the throat 11 and the plate of protection 22 is very weak. In fact, given the small size of the contact surface 19 of the stop element 18, the least relative displacement of the protection plate 22 with respect to the groove 11, as shown in FIG. FIG. 6, or of the groove 11 with respect to the protection plate 22, as shown in Figure 7, causes the disengagement of the pin 28 of the stop element 18. The protection plate 22 is then driven in rotation by the first branch 30 of the torsion spring 31 which seeks to loosen. As shown in Figure 8, to allow free rotation of the protection plate 22 about the axis 14, a clearance 34 is advantageously arranged at the rear of the tail 9 of the bolt 5. Finally, as shown in Figure 9, when the protection plate 22 has completely rotated around the axis 14, the tooth 27 is found on the trajectory of the tail 9 of the bolt 5 and therefore forbid any return back of the latter. Such a device protection of the throat 11 of the door lock 1 thus makes it possible to fight effectively against attempted break-ins.

    Bien que l'invention ait été décrite en liaison avec des exemples particuliers de réalisation, il est bien évident qu'elle n'y est nullement limitée et qu'elle comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci entrent dans le cadre de l'invention.Although the invention has been described in connection with examples particular achievements, it is quite obvious that it is by no means that it includes all the technical equivalents of the means described as well as their combinations if they fall within the scope of the invention.

    Claims (10)

    Dispositif de protection d'une gorge (11) d'une serrure de porte (1), ladite gorge étant prévue pour être disposée d'un côté d'une queue (9) d'un pêne (5) de condamnation et étant apte, sous faction d'un premier moyen de rappel élastique (21), à venir en prise avec des dents (17) présentées par la queue du pêne, caractérisé en ce qu'il comprend une plaque de protection (22) prévue pour être positionnée de l'autre côté de la queue du pêne et conçue de façon à présenter au moins une protubérance (26) apte, sous l'effet d'au moins un deuxième moyen de rappel élastique (31), à venir en appui contre un élément de butée (18) associé ménagé dans la gorge, ce deuxième moyen de rappel élastique étant apte, si la protubérance est désengagée de son élément de butée associé, à forcer ladite de plaque de protection à pivoter autour d'un axe (14) afin de positionner ladite protubérance sur la trajectoire de la queue du pêne.Device for protecting a groove (11) of a door lock (1), said groove being designed to be disposed on one side of a shank (9) of a locking bolt (5) and being suitable , under the action of a first elastic return means (21), to come into engagement with teeth (17) presented by the tail of the bolt, characterized in that it comprises a protection plate (22) intended to be positioned on the other side of the tail of the bolt and designed so as to have at least one protuberance (26) adapted, under the effect of at least one second elastic return means (31), to bear against an element of the abutment (18) associated in the groove, this second resilient return means being adapted, if the protrusion is disengaged from its associated abutment element, to force said protective plate to pivot about an axis (14) in order to positioning said protuberance on the trajectory of the tail of the bolt. Dispositif de protection selon la revendication 1, caractérisé en ce que le deuxième moyen de rappel élastique est réalisé à l'aide d'un ressort de torsion (31).Protective device according to Claim 1, characterized in that the second elastic return means is produced by means of a torsion spring (31). Dispositif de protection selon la revendication 2, caractérisé en ce que le ressort de torsion (31) présente une branche (30) conçue pour venir en appui contre la plaque de protection (22).Protective device according to claim 2, characterized in that the torsion spring (31) has a branch (30) designed to bear against the protection plate (22). Dispositif de protection selon la revendication 3, caractérisé en ce qu'une rainure (29) est ménagée en bordure supérieure de la plaque de protection (22) afin de recevoir la branche (30) du ressort de torsion (31).Protective device according to claim 3, characterized in that a groove (29) is provided at the upper edge of the protection plate (22) for receiving the branch (30) of the torsion spring (31). Dispositif de protection selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'élément de butée (18) associé présente une surface de contact (19) sensiblement plane.Protective device according to one of Claims 1 to 4, characterized in that the associated abutment element (18) has a substantially planar contact surface (19). Dispositif de protection selon la revendication 5, caractérisé en ce qu'un épaulement (15) est ménagé dans la gorge (11).Protective device according to claim 5, characterized in that a shoulder (15) is provided in the groove (11). Dispositif de protection selon la revendication 6, caractérisé en ce que la protubérance (26) de la plaque de protection (22) comprend une dent (27) prolongée par un ergot (28) prévu pour être inséré entre l'épaulement (15) et l'élément de butée (18) ménagés dans la gorge (11). Protective device according to claim 6, characterized in that the protrusion (26) of the protection plate (22) comprises a tooth (27) extended by a lug (28) intended to be inserted between the shoulder (15) and the stop element (18) formed in the groove (11). Dispositif de protection selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la plaque de protection (22) comporte une lumière (25) sensiblement oblongue traversée par l'axe (14) autour duquel ladite plaque de protection peut pivoter.Protective device according to any one of claims 1 to 7, characterized in that the protection plate (22) comprises a substantially oblong slot (25) through which the axis (14) extends around which said protection plate can pivot. Dispositif de protection selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'un dégagement (33) est ménagé à l'arrière de la queue (9) du pêne (5) pour permettre le pivotement de la plaque de protection (22).Protective device according to one of Claims 1 to 8, characterized in that a recess (33) is provided at the rear of the tail (9) of the bolt (5) to allow the pivoting of the protective plate (22). Serrure de porte (1) comprenant un coffre (2) traversé par un barillet (7) pourvu d'un panneton (10) mobile en rotation logé dans le coffre, caractérisé en ce qu'elle comprend un dispositif de protection selon l'une quelconque des revendications 1 à 9.Door lock (1) comprising a trunk (2) through which a barrel (7) with a rotating bit (10) is housed in the trunk, characterized in that it comprises a protection device according to one any of claims 1 to 9.
    EP20050002343 2004-02-05 2005-02-02 Protection device for a tumbler of a door lock Active EP1561885B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR0401116 2004-02-05
    FR0401116A FR2866049B1 (en) 2004-02-05 2004-02-05 DEVICE FOR PROTECTING A GRIP FROM A DOOR LOCK

    Publications (2)

    Publication Number Publication Date
    EP1561885A1 true EP1561885A1 (en) 2005-08-10
    EP1561885B1 EP1561885B1 (en) 2008-10-15

    Family

    ID=34673900

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP20050002343 Active EP1561885B1 (en) 2004-02-05 2005-02-02 Protection device for a tumbler of a door lock

    Country Status (3)

    Country Link
    EP (1) EP1561885B1 (en)
    DE (1) DE602005010314D1 (en)
    FR (1) FR2866049B1 (en)

    Cited By (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2438491A (en) * 2006-05-15 2007-11-28 Michael Joyce Door entry prevention device with biased lock concealing device
    WO2008094472A2 (en) * 2007-01-26 2008-08-07 Stanley Chung A type of main lock structure and a door lock comprising such a main lock structure
    ITRM20090258A1 (en) * 2009-05-20 2010-11-21 Gruben Italia Security S P A SAFETY LOCK.
    FR2963634A1 (en) * 2010-08-06 2012-02-10 Bricard Door lock, has movable locking member placed laterally to locking groove and adapted to engage with protection plate, where locking member is designed to block groove in translation when plate pivots around pivoting axle

    Citations (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2564884A1 (en) * 1984-05-23 1985-11-29 Chauvat Sofranq Safety device for a lock of the surface-mounted type
    DE8814086U1 (en) * 1988-11-10 1989-01-05 Mohr, Hans-Dietrich, 5830 Schwelm Lock
    DE3800298A1 (en) * 1988-01-08 1989-07-20 Karrenberg Fa Wilhelm Mortise lock
    EP0651116A1 (en) * 1993-10-29 1995-05-03 Vachette Door lock equipped with a protection device
    FR2770247A1 (en) * 1997-10-28 1999-04-30 Fichet Serrurerie Batiment Fsb Locking device for door lock bolt in event of attempted house breaking
    EP1199427A1 (en) * 2000-10-20 2002-04-24 Stremler Lock with a sliding bolt and improved security

    Patent Citations (6)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2564884A1 (en) * 1984-05-23 1985-11-29 Chauvat Sofranq Safety device for a lock of the surface-mounted type
    DE3800298A1 (en) * 1988-01-08 1989-07-20 Karrenberg Fa Wilhelm Mortise lock
    DE8814086U1 (en) * 1988-11-10 1989-01-05 Mohr, Hans-Dietrich, 5830 Schwelm Lock
    EP0651116A1 (en) * 1993-10-29 1995-05-03 Vachette Door lock equipped with a protection device
    FR2770247A1 (en) * 1997-10-28 1999-04-30 Fichet Serrurerie Batiment Fsb Locking device for door lock bolt in event of attempted house breaking
    EP1199427A1 (en) * 2000-10-20 2002-04-24 Stremler Lock with a sliding bolt and improved security

    Cited By (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    GB2438491A (en) * 2006-05-15 2007-11-28 Michael Joyce Door entry prevention device with biased lock concealing device
    GB2438491B (en) * 2006-05-15 2011-06-01 Michael Joyce Door entry prevention device
    WO2008094472A2 (en) * 2007-01-26 2008-08-07 Stanley Chung A type of main lock structure and a door lock comprising such a main lock structure
    WO2008094472A3 (en) * 2007-01-26 2008-11-20 Stanley Chung A type of main lock structure and a door lock comprising such a main lock structure
    CN101008297B (en) * 2007-01-26 2010-10-13 庄子平 Combination door lock
    ITRM20090258A1 (en) * 2009-05-20 2010-11-21 Gruben Italia Security S P A SAFETY LOCK.
    FR2963634A1 (en) * 2010-08-06 2012-02-10 Bricard Door lock, has movable locking member placed laterally to locking groove and adapted to engage with protection plate, where locking member is designed to block groove in translation when plate pivots around pivoting axle

    Also Published As

    Publication number Publication date
    DE602005010314D1 (en) 2008-11-27
    FR2866049A1 (en) 2005-08-12
    EP1561885B1 (en) 2008-10-15
    FR2866049B1 (en) 2006-06-09

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