EP0540429B1 - Retention device for the key of a lock - Google Patents

Retention device for the key of a lock Download PDF

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Publication number
EP0540429B1
EP0540429B1 EP92420304A EP92420304A EP0540429B1 EP 0540429 B1 EP0540429 B1 EP 0540429B1 EP 92420304 A EP92420304 A EP 92420304A EP 92420304 A EP92420304 A EP 92420304A EP 0540429 B1 EP0540429 B1 EP 0540429B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
cylinder
key
keylock
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92420304A
Other languages
German (de)
French (fr)
Other versions
EP0540429A1 (en
Inventor
Josep Salvador
Luis Xaus
Michel Charbonneau
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.)
Schneider Electric SE
Original Assignee
Schneider Electric SE
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Filing date
Publication date
Application filed by Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0540429A1 publication Critical patent/EP0540429A1/en
Application granted granted Critical
Publication of EP0540429B1 publication Critical patent/EP0540429B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/008—Locks for use with special keys or a plurality of keys ; keys therefor for simple tool-like keys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1099—Screw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/7486—Single key
    • Y10T70/7497—Tumblerless warded
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7441—Key
    • Y10T70/7486—Single key
    • Y10T70/7508—Tumbler type
    • Y10T70/7559—Cylinder type
    • Y10T70/7655—Cylinder attaching or mounting means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/80—Parts, attachments, accessories and adjuncts
    • Y10T70/8432—For key-operated mechanism
    • Y10T70/8459—Housings
    • Y10T70/8541—Mounting arrangements

Definitions

  • the invention relates to a lock with a removable rotary key, in particular for the door of an electrical appliance cabinet or cabinet, comprising a rosette for fixing to the wall of the door, said rosette having a cylindrical housing, a cylinder rotatably mounted in said housing and having an internal end projecting from said rosette on the side of the wall and cooperating with a locking member and an external drive end, and a key of shape combined with that of said external end to cooperate by interlocking with the latter and to rotate it from a closed position of the lock to the open position and vice versa; the lock further comprising a collar defining a restricted entry section, adapted to that of the key, said collar comprising a notch providing a passage for a retaining lug projecting from the external periphery of the key, said notch being positioned relative to to said cylinder in such a way that in the open position of the lock, the lug is trapped behind the collar and prevents the key from being removed, while in the closed position the lug is opposite the notch
  • a lock of the kind mentioned is described in document EP-A-175,211.
  • This type of lock requires a key to open and close the box, while not being a security lock, significantly more complicated.
  • These locks hereinafter called square drive locks, allow the locking system to be controlled, which can be a simple cam or a gearbox, or any other operating locking system.
  • the object of the present invention is the production of an improved lock, the key of which controls opening and closing by a simple rotation and makes it possible to exert on the door a tensile force to open the latter.
  • the lock according to the invention is characterized in that the external end of the cylinder is constituted by a prismatic end-piece, that the lock comprises a retaining sleeve threaded on the cylinder and having projections which cooperate with conjugated parts of the cylinder to position axially the sleeve relative to the cylinder, while allowing rotation of the latter, the sleeve being immobilized in rotation relative to the housing, and that said sleeve has at its end the collar, which is folded inwards from the sleeve.
  • the key In the closed position of the door and the lock, the key can be removed and no protruding part of the door remains.
  • the opening is carried out in the usual way, by insertion and rotation of the key, and the latter, retained in the lock, allows the door to pivot by exerting a tensile force on the key.
  • the lock advantageously uses standard elements, to which has been added a retaining sleeve threaded onto the cylinder and held axially on the latter.
  • This holding is achieved by fingers which extend along the generatrix of the sleeve, and have at their end a spout engaged in a circular groove of the cylinder.
  • the sleeve is fixed to the cylinder by snap-fitting, while after inserting the cylinder / sleeve assembly in the rosette housing, the retaining fingers are immobilized by the internal periphery of the housing, preventing any disengaging.
  • the sleeve also carries immobilizing fingers similar to the snap-on fingers, but of greater length, which during the positioning of the cylinder / sleeve assembly in the housing, engage in grooves made in this housing to immobilize the sleeve in rotation.
  • the rosette or base is generally fixed to the external part of the door, while the cylinder passes through an orifice made in the door, and carries on the internal part the locking system, for example a simple cam, fixed by a screw. which at the same time maintains the cylinder in the rosette housing.
  • the locking system can of course be of a different type, in particular with a cremone bolt housing.
  • the key advantageously carries two diametrically opposite lugs, and the gripping end is arranged as a handle, facilitating traction on the key to open the door.
  • Figure 1 is an exploded schematic view of a lock according to the invention.
  • FIG. 2 is a plan view of the rose according to FIG. 1.
  • Figure 3 is a section along line III-III of Figure 2.
  • FIG. 4 is an elevation view of the socket according to FIG. 1.
  • Figure 5 is an elevational view of the cylinder according to Figure 1, the socket fitted on the cylinder being shown in broken lines.
  • Figure 6 is a view similar to that of Figure 3, showing the cylinder / socket assembly fitted on the rosette.
  • Figure 7 is a section along line VII-VII of Figure 6.
  • a rosette or base 4 has on one of its faces 4a, threaded blind holes 4b receiving fixing screws on the external face of the door of an electrical switchgear cabinet (not shown).
  • Perpendicular to the face 4a extends a cylindrical housing 4c with three stepped sections 4d, 4e and 4f, the smallest section 4f being on the side of the face 4a, pressed against the wall of the door.
  • a cylinder 3 of shape combined with that of the housing 4c is fitted into the latter, projecting by its end 3c from the face 4a of the rosette 4.
  • the opposite end 3d internal to the section 4d of the housing 4c is arranged as a nozzle prismatic, in this case in triangular tip or as shown in Figure 1, as an alternative, with square tip 3d.
  • a grooved collar 3a At the base of the 3d nozzle is provided a grooved collar 3a, the cross section of which is smaller than that of the part 4d of the housing 4c to provide an annular space for a retaining sleeve 2.
  • the sleeve 2 of generally cylindrical shape has at one of its ends a collar 2d folded inwards and confining a cylindrical orifice 2e. Two diametrically opposite rectangular notches 2c are formed in the internal edge of the collar 2d.
  • the sleeve 2 opposite the collar 2d extend along the generatrices, several holding fingers 2a distributed along the circumference, and the free end of which is shaped as a snap-on spout 2f.
  • the length of the holding fingers 2a corresponds to the height of the large section 4d of the housing 4c, while two fingers are of greater length to constitute immobilizing fingers 2b.
  • the sleeve 2 can be fitted onto the cylinder 3, the snap-fit spouts 2f snapping into the groove 3a.
  • the diameter of the sleeve 2 corresponds to that of the large section 4d, and the cylinder 3, sleeve 2 assembly can be inserted into the housing 4c.
  • Immobilizer fingers 2b engage in two grooves 4g, formed in the intermediate section 4e of the housing 4c.
  • a threaded hole 3e capable of receiving a screw 6 for fixing a locking member, for example of a cremone bolt case 5, generally disposed inside the box being applied against the wall Door.
  • the cremone bolt housing 5 is secured for example by the screws screwing into the orifices 4b at the rosette 4, and it can be seen that the fixing screw 6 maintains the cylinder 3 in the housing 4c.
  • a key 1 has on one side a handle in the shape of a handle 1b, and on the opposite side a cylindrical section 1a of diameter corresponding to the orifice 2e confined by the collar 2d.
  • the key 1 has two diametrically opposite lugs 1c, and of shape combined with the notches 2c.
  • the cylindrical section 1a is hollowed out in its center to form a housing of shape conjugated to the end piece 3d, in which the latter is housed when the key 1 is inserted into the socket 2.
  • the lugs 1c must be aligned with the notches 2c and the 3d tip must be in a position allowing the key 1 to fit onto this 3d tip.
  • this position corresponds to the closed position of the locking system 5.
  • the key 1 can be fitted onto the 3d nozzle, and the pins 1c come at the rear of the collar 2d, allowing a rotation of the key 1 to open the lock.
  • the lugs 1c are retained by the collar 2d and the key is maintained and cannot be removed.
  • the key is trapped, which is hardly annoying.
  • the closure is effected by a reverse closing operation of the door and a rotation of the key 1 again bringing the lugs 1c opposite the notches 2c.
  • the key can be removed, the projection of the lock then being extremely small.
  • the sleeve 2 is immobilized in rotation by the fingers 2b, in order to maintain the position of the lugs 2c, but this immobilization does not hamper the rotational movement of the cylinder 3, thanks to the groove 3a, in which slide the snap-fit nozzles 2f. Any risk of disengaging the socket 2 under the tensile force exerted by the key 1 is excluded, by the hooping of the immobilizing fingers 2a, by the internal wall of the housing 4c.
  • the retaining sleeve 2 is an extremely simple part, capable of being associated with other types of locks.
  • the invention is of course in no way limited to the mode of implementation more particularly described, but it extends to all variants remaining within the framework of equivalences, in particular to that in which the retaining fingers would be snapped into a groove made in the housing 4c, or that in which the sleeve 2 is secured to the rosette 4 by any suitable means.

Description

L'invention est relative à une serrure à clé rotative amovible, notamment pour la porte d'un coffret ou d'une armoire d'appareillage électrique, comprenant une rosace de fixation sur la paroi de la porte, ladite rosace présentant un logement cylindrique, un cylindre monté à rotation dans ledit logement et ayant une extrémité interne faisant saillie de ladite rosace du côté de la paroi et coopérant avec un organe de verrouillage et une extrémité externe d'entraînement, et une clé de forme conjuguée à celle de ladite extrémité externe pour coopérer par emboîtement avec ce dernier et l'entraîner en rotation d'une position de fermeture de la serrure vers la position d'ouverture et inversement; la serrure comprenant de plus un collet définissant une section d'entrée restreinte, adaptée à celle de la clé, ledit collet comportant une encoche offrant un passage à un ergot de retenue faisant saillie du pourtour externe de la clé, ladite encoche étant positionnée par rapport audit cylindre de telle manière qu'en position d'ouverture de la serrure, l'ergot est emprisonné derrière le collet et empêche le retrait de la clé, tandis qu'en position de fermeture l'ergot est en regard de l'encoche pour permettre la mise en place et l'enlèvement de la clé.The invention relates to a lock with a removable rotary key, in particular for the door of an electrical appliance cabinet or cabinet, comprising a rosette for fixing to the wall of the door, said rosette having a cylindrical housing, a cylinder rotatably mounted in said housing and having an internal end projecting from said rosette on the side of the wall and cooperating with a locking member and an external drive end, and a key of shape combined with that of said external end to cooperate by interlocking with the latter and to rotate it from a closed position of the lock to the open position and vice versa; the lock further comprising a collar defining a restricted entry section, adapted to that of the key, said collar comprising a notch providing a passage for a retaining lug projecting from the external periphery of the key, said notch being positioned relative to to said cylinder in such a way that in the open position of the lock, the lug is trapped behind the collar and prevents the key from being removed, while in the closed position the lug is opposite the notch for allow the installation and removal of the key.

Une serrure du genre mentionné est décrite dans le document EP-A-175.211. Ce type de serrure nécessite une clé pour l'ouverture et la fermeture du coffret, tout en n'étant pas une serrure de sûreté, notablement plus compliquée. Ces serrures, appelées par la suite serrure à carré d'entraînement, permettent la commande du système de verrouillage qui peut être une simple came ou un boîtier de crémone, ou tout autre système de verrouillage opérant.A lock of the kind mentioned is described in document EP-A-175,211. This type of lock requires a key to open and close the box, while not being a security lock, significantly more complicated. These locks, hereinafter called square drive locks, allow the locking system to be controlled, which can be a simple cam or a gearbox, or any other operating locking system.

Le but de la présente invention est la réalisation d'une serrure améliorée, dont la clé commande l'ouverture et la fermeture par une simple rotation et permet d'exercer sur la porte un effort de traction pour ouvrir cette dernière.The object of the present invention is the production of an improved lock, the key of which controls opening and closing by a simple rotation and makes it possible to exert on the door a tensile force to open the latter.

La serrure selon l'invention est caractérisée en ce que l'extrémité externe du cylindre est constituée par un embout prismatique , que la serrure comporte une douille de retenue enfilée sur le cylindre et ayant des saillies qui coopèrent avec des parties conjuguées du cylindre pour positionner axialement la douille par rapport au cylindre, tout en autorisant une rotation de ce dernier, la douille étant immobilisée en rotation par rapport au logement, et que ladite douille présente à son extrémité le collet, lequel est rabattu vers l'intérieur de la douille.The lock according to the invention is characterized in that the external end of the cylinder is constituted by a prismatic end-piece, that the lock comprises a retaining sleeve threaded on the cylinder and having projections which cooperate with conjugated parts of the cylinder to position axially the sleeve relative to the cylinder, while allowing rotation of the latter, the sleeve being immobilized in rotation relative to the housing, and that said sleeve has at its end the collar, which is folded inwards from the sleeve.

En position fermée de la porte et de la serrure, la clé peut être enlevée et il ne subsiste aucune partie en saillie de la porte. L'ouverture est réalisée de la manière usuelle, par insertion et rotation de la clé, et cette dernière, retenue dans la serrure, permet de faire pivoter la porte en exerçant un effort de traction sur la clé.In the closed position of the door and the lock, the key can be removed and no protruding part of the door remains. The opening is carried out in the usual way, by insertion and rotation of the key, and the latter, retained in the lock, allows the door to pivot by exerting a tensile force on the key.

La serrure utilise avantageusement des éléments standards, auxquels a été adjoint une douille de retenue enfilée sur le cylindre et maintenue axialement sur ce dernier. Ce maintien est réalisé par des doigts qui s'étendent le long de génératrice de la douille, et présentent à leur extrémité un bec engagé dans une rainure circulaire du cylindre. La fixation de la douille sur le cylindre s'effectue par encliquetage, tandis qu'après insertion de l'ensemble cylindre/ douille dans le logement de la rosace, les doigts de maintien sont immobilisés par le pourtour interne du logement, empêchant tout désencliquetage. La douille porte également des doigts d'immobilisation analogues aux doigts d'encliquetage, mais de plus grande longueur, qui lors de la mise en place de l'ensemble cylindre/douille dans le logement, s'engagent dans des rainures ménagées dans ce logement pour immobiliser en rotation la douille. La rosace ou l'embase est généralement fixée à la partie externe de la porte, tandis que le cylindre traverse un orifice ménagé dans la porte, et porte sur la partie intérieure le système de verrouillage, par exemple une simple came, fixée par une vis qui assure en même temps le maintien du cylindre dans le logement de la rosace. Le système de verrouillage peut bien entendu être d'un type différent, notamment à boîtier de crémone. Lors du montage de la serrure, il suffit de prendre soin d'amener les ergots de la clé en regard des encoches de la douille, lorsque la came de verrouillage et le cylindre sont en position de fermeture. Des détrompeurs peuvent faciliter le montage. La clé porte avantageusement deux ergots diamétralement opposés, et l'extrémité de préhension est agencée en poignée, facilitant la traction sur la clé pour ouvrir la porte.The lock advantageously uses standard elements, to which has been added a retaining sleeve threaded onto the cylinder and held axially on the latter. This holding is achieved by fingers which extend along the generatrix of the sleeve, and have at their end a spout engaged in a circular groove of the cylinder. The sleeve is fixed to the cylinder by snap-fitting, while after inserting the cylinder / sleeve assembly in the rosette housing, the retaining fingers are immobilized by the internal periphery of the housing, preventing any disengaging. The sleeve also carries immobilizing fingers similar to the snap-on fingers, but of greater length, which during the positioning of the cylinder / sleeve assembly in the housing, engage in grooves made in this housing to immobilize the sleeve in rotation. The rosette or base is generally fixed to the external part of the door, while the cylinder passes through an orifice made in the door, and carries on the internal part the locking system, for example a simple cam, fixed by a screw. which at the same time maintains the cylinder in the rosette housing. The locking system can of course be of a different type, in particular with a cremone bolt housing. When mounting the lock, it is sufficient to take care to bring the lugs of the key opposite the notches of the socket, when the locking cam and the cylinder are in the closed position. Keying devices can facilitate assembly. The key advantageously carries two diametrically opposite lugs, and the gripping end is arranged as a handle, facilitating traction on the key to open the door.

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre, d'un mode de mise en oeuvre de l'invention, donné à titre d'exemple non limitatif et représenté aux dessins annexés dans lesquels:Other advantages and characteristics will emerge more clearly from the description which follows, of an embodiment of the invention, given by way of nonlimiting example and represented in the appended drawings in which:

La figure 1 est une vue schématique éclatée d'une serrure selon l'invention.Figure 1 is an exploded schematic view of a lock according to the invention.

La figure 2 est une vue en plan de la rosace selon la figure 1.FIG. 2 is a plan view of the rose according to FIG. 1.

La figure 3 est une coupe suivant la ligne III-III de la figure 2.Figure 3 is a section along line III-III of Figure 2.

La figure 4 est une vue en élévation de la douille selon la figure 1.FIG. 4 is an elevation view of the socket according to FIG. 1.

La figure 5 est une vue en élévation du cylindre selon la figure 1, la douille emboîtée sur le cylindre étant représentée en traits discontinus.Figure 5 is an elevational view of the cylinder according to Figure 1, the socket fitted on the cylinder being shown in broken lines.

La figure 6 est une vue analogue à celle de la figure 3, montrant l'ensemble cylindre/douille emboîté sur la rosace.Figure 6 is a view similar to that of Figure 3, showing the cylinder / socket assembly fitted on the rosette.

La figure 7 est une coupe suivant la ligne VII-VII de la figure 6.Figure 7 is a section along line VII-VII of Figure 6.

Sur les figures, une rosace ou embase 4 présente sur l'une de ses faces 4a, des orifices borgnes filetés 4b recevant des vis de fixation sur la face externe de la porte d'un coffret d'appareillage électrique (non représenté). Perpendiculairement à la face 4a s'étend un logement cylindrique 4c à trois sections étagées 4d,4e et 4f, la plus petite section 4f étant du côté de la face 4a, plaquée sur la paroi de la porte. Un cylindre 3 de forme conjuguée à celle du logement 4c est emboîté dans ce dernier, en faisant saillie par son extrémité 3c de la face 4a de la rosace 4. L'extrémité opposée 3d interne à la section 4d du logement 4c est agencée en embout prismatique, en l'occurrence en embout triangulaire ou de la manière représentée sur la figure 1, à titre d'alternative, à embout carré 3d. A la base de l'embout 3d est prévue une collerette à rainure 3a, dont la section est inférieure à celle de la partie 4d du logement 4c pour ménager un espace annulaire pour une douille de retenue 2. La douille 2 de forme générale cylindrique présente à l'une de ses extrémités un collet 2d rabattu vers l'intérieur et confinant un orifice cylindrique 2e. Deux encoches rectangulaires 2c diamétralement opposées sont ménagées dans le bord interne du collet 2d. Dans la partie de la douille 2 opposée au collet 2d s'étendent suivant les génératrices, plusieurs doigts de maintien 2a répartis le long de la circonférence, et dont l'extrémité libre est conformée en bec 2f d'encliquetage. La longueur des doigts de maintien 2a correspond à la hauteur de la grande section 4d du logement 4c, tandis que deux doigts sont d'une longueur supérieure pour constituer des doigts d'immobilisation 2b.In the figures, a rosette or base 4 has on one of its faces 4a, threaded blind holes 4b receiving fixing screws on the external face of the door of an electrical switchgear cabinet (not shown). Perpendicular to the face 4a extends a cylindrical housing 4c with three stepped sections 4d, 4e and 4f, the smallest section 4f being on the side of the face 4a, pressed against the wall of the door. A cylinder 3 of shape combined with that of the housing 4c is fitted into the latter, projecting by its end 3c from the face 4a of the rosette 4. The opposite end 3d internal to the section 4d of the housing 4c is arranged as a nozzle prismatic, in this case in triangular tip or as shown in Figure 1, as an alternative, with square tip 3d. At the base of the 3d nozzle is provided a grooved collar 3a, the cross section of which is smaller than that of the part 4d of the housing 4c to provide an annular space for a retaining sleeve 2. The sleeve 2 of generally cylindrical shape has at one of its ends a collar 2d folded inwards and confining a cylindrical orifice 2e. Two diametrically opposite rectangular notches 2c are formed in the internal edge of the collar 2d. In the part of the sleeve 2 opposite the collar 2d extend along the generatrices, several holding fingers 2a distributed along the circumference, and the free end of which is shaped as a snap-on spout 2f. The length of the holding fingers 2a corresponds to the height of the large section 4d of the housing 4c, while two fingers are of greater length to constitute immobilizing fingers 2b.

De la manière représentée aux figures 4 et 5, la douille 2 peut être emboîtée sur le cylindre 3, les becs d'encliquetage 2f s'encliquetant dans la rainure 3a. En position encliquetée sur le cylindre 3, le diamètre de la douille 2 correspond à celui de la grande section 4d, et l'ensemble cylindre 3, douille 2 peut être inséré dans le logement 4c. Les doigts d'immobilisation 2b s'engagent dans deux rainures 4g, ménagées dans la section intermédiaire 4e du logement 4c. Sur la face 3c, est prévu un trou fileté 3e susceptible de recevoir une vis 6 de fixation d'un organe de verrouillage, par exemple d'un boîtier de crémone 5, généralement disposé à l'intérieur du coffret en étant appliqué contre la paroi de la porte. Le boîtier de crémone 5 est solidarisé par exemple par les vis se vissant dans les orifices 4b à la rosace 4, et on voit que la vis de fixation 6 maintient le cylindre 3 dans le logement 4c. Une clé 1 comporte d'un côté une poignée en forme d'anse 1b, et du côté opposé un tronçon cylindrique 1a de diamètre correspondant à l'orifice 2e confiné par le collet 2d. La clé 1 présente deux ergots 1c diamétralement opposés, et de forme conjuguée aux encoches 2c. Le tronçon cylindrique 1a est évidé en son centre pour former un logement de forme conjuguée à l'embout 3d, dans lequel ce dernier vient se loger lors de l'insertion de la clé 1 dans la douille 2. Pour l'introduction de la clé 1, il faut que les ergots 1c soient alignés avec les encoches 2c et que l'embout 3d soit dans une position permettant l'emboîtement de la clé 1 sur cet embout 3d. Selon l'invention, cette position correspond à la position de fermeture du système de verrouillage 5. Dans la position de fermeture de la serrure,la clé 1 peut être emboîtée sur l'embout 3d, et les ergots 1c viennent à l'arrière du collet 2d, autorisant une rotation de la clé 1 pour ouvrir la serrure. Dans cette position d'ouverture, les ergots 1c sont retenus par le collet 2d et la clé est maintenue et ne peut être enlevée. Par contre, il est possible d'exercer une traction sur la clé 1 qui est transmise à la porte pour provoquer son ouverture. En position ouverte de la serrure, la clé est emprisonnée, ce qui n'est guère gênant. La fermeture s'effectue par une manoeuvre inverse de fermeture de la porte et d'une rotation de la clé 1 amenant à nouveau les ergots 1c en regard des encoches 2c. Dans cette position de fermeture de la serrure, la clé peut être retirée, la saillie de la serrure étant alors extrêment faible. La douille 2 est immobilisée en rotation par les doigts 2b, afin de maintenir la position des ergots 2c, mais cette immobilisation n'entrave pas le mouvement de rotation du cylindre 3, gràce à la rainure 3a, dans laquelle coulissent les becs d'encliquetage 2f. Tout risque de désencliquetage de la douille 2 sous l'effort de la traction exercée par la clé 1 est exclu, par le frettage des doigts d'immobilisation 2a, par la paroi interne du logement 4c.As shown in Figures 4 and 5, the sleeve 2 can be fitted onto the cylinder 3, the snap-fit spouts 2f snapping into the groove 3a. In the latched position on the cylinder 3, the diameter of the sleeve 2 corresponds to that of the large section 4d, and the cylinder 3, sleeve 2 assembly can be inserted into the housing 4c. Immobilizer fingers 2b engage in two grooves 4g, formed in the intermediate section 4e of the housing 4c. On the face 3c, there is provided a threaded hole 3e capable of receiving a screw 6 for fixing a locking member, for example of a cremone bolt case 5, generally disposed inside the box being applied against the wall Door. The cremone bolt housing 5 is secured for example by the screws screwing into the orifices 4b at the rosette 4, and it can be seen that the fixing screw 6 maintains the cylinder 3 in the housing 4c. A key 1 has on one side a handle in the shape of a handle 1b, and on the opposite side a cylindrical section 1a of diameter corresponding to the orifice 2e confined by the collar 2d. The key 1 has two diametrically opposite lugs 1c, and of shape combined with the notches 2c. The cylindrical section 1a is hollowed out in its center to form a housing of shape conjugated to the end piece 3d, in which the latter is housed when the key 1 is inserted into the socket 2. For the introduction of the key 1, the lugs 1c must be aligned with the notches 2c and the 3d tip must be in a position allowing the key 1 to fit onto this 3d tip. According to the invention, this position corresponds to the closed position of the locking system 5. In the closed position of the lock, the key 1 can be fitted onto the 3d nozzle, and the pins 1c come at the rear of the collar 2d, allowing a rotation of the key 1 to open the lock. In this open position, the lugs 1c are retained by the collar 2d and the key is maintained and cannot be removed. By cons, it is possible to exert traction on the key 1 which is transmitted to the door to cause it to open. In the open position of the lock, the key is trapped, which is hardly annoying. The closure is effected by a reverse closing operation of the door and a rotation of the key 1 again bringing the lugs 1c opposite the notches 2c. In this closed position of the lock, the key can be removed, the projection of the lock then being extremely small. The sleeve 2 is immobilized in rotation by the fingers 2b, in order to maintain the position of the lugs 2c, but this immobilization does not hamper the rotational movement of the cylinder 3, thanks to the groove 3a, in which slide the snap-fit nozzles 2f. Any risk of disengaging the socket 2 under the tensile force exerted by the key 1 is excluded, by the hooping of the immobilizing fingers 2a, by the internal wall of the housing 4c.

La douille de retenue 2 est une pièce extrêmement simple, susceptible d'être associée à d'autres types de serrures. L'invention est bien entendu nullement limitée au mode de mise en oeuvre plus particulièrement décrit, mais elle s'étend à toutes variantes restant dans le cadre des équivalences, notamment à celle dans laquelle les doigts de maintien seraient encliquetés dans une rainure ménagée dans le logement 4c, ou celle encore dans laquelle la douille 2 est solidarisée à la rosace 4 par tout moyen approprié.The retaining sleeve 2 is an extremely simple part, capable of being associated with other types of locks. The invention is of course in no way limited to the mode of implementation more particularly described, but it extends to all variants remaining within the framework of equivalences, in particular to that in which the retaining fingers would be snapped into a groove made in the housing 4c, or that in which the sleeve 2 is secured to the rosette 4 by any suitable means.

Claims (7)

  1. A keylock with a removable rotating key (1), notably for the door of an electrical switchgear enclosure or cabinet, comprising a base-plate (4) for fixing onto the enclosure wall, said base-plate (4) presenting a cylindrical housing (4c), a cylinder (3) mounted with rotation in said housing (4c) and having an internal end (3c) protruding out from said base-plate (4) on the wall side (4a) and cooperating with a locking component (5) and an external driving end, and a key (1) of conjugate shape to that of said external end to cooperate by fitting onto the latter and driving it in rotation from a closed position of the keylock to the open position and vice-versa; the keylock in addition comprising a flange (2d) defining a reduced input section (2e), matching that (la) of the key (1), said flange (2d) comprising a slot (2c) providing a passage for a retaining stub (lc) protruding out from the external circumference of the key (1), said slot (2d) being positioned in relation to said cylinder (3) in such a way that in the open position of the keylock, the stub is held captive behind the flange (2d) and prevents the key (1) from being removed, whereas in the closed position the stub (lc) is in alignment with the slot (2c) to enable the key to be inserted and removed,
    characterized in that the external end of the cylinder (3) is formed by a prismatic end piece (3d), that the keylock comprises a retaining sleeve (2) threaded onto the cylinder (3) and having protrusions (2f) which cooperate with conjugate parts (3a) of the cylinder to axially position the sleeve (2) with respect to the cylinder (3), while allowing rotation of the latter, the sleeve (2) being immobilised in rotation with respect to the housing (4c), and that said sleeve (2) presents at its end the flange (2d), which is folded in towards the inside of the sleeve (2).
  2. The keylock according to claim 1, characterized in that the cylindrical housing (4c) of the base-plate (4) presents staggered sections (4d, e, f), the widened section (4d) of these sections on the side where the key (1) fits corresponding to the external section of the sleeve (2) which is inserted therein, that the sleeve (2) presents retaining fingers (2a) which cooperate with the cylinder (3) to retain the sleeve (2) on the cylinder (3), that these fingers are secured in the retaining position when the sleeve (2) is inserted in said housing (4c), and that the sleeve (2) comprises a finger (2b) for rotationwise immobilisation which is engaged in a groove (4g) arranged in said housing (4c), when the sleeve (2) is inserted in the housing.
  3. The keylock according to claim 1, characterized in that the key (1) comprises a gripping handle (1b) to exert rotation and traction forces.
  4. The keylock according to claim 2, characterized in that said retaining fingers (2a) extend along generating lines of the sleeve (2) and present at their end opposite from the flange, a nose (2f) clipping into a circular groove (3a) of said conjugate parts (3a) of the cylinder.
  5. The keylock according to claim 2, characterized in that said immobilising fingers (2b) are fitted between the retaining fingers (2a) and are of greater length to engage in a groove (4g) made in the reduced section (4e) of said housing (4c).
  6. The keylock according to any one of the foregoing claims, characterized in that the key (1) comprises at its cylindrical end (la) two diametrically opposed external stubs (lc) and an axial blind cavity of prismatic section conjugate to that of the end (3d).
  7. The keylock according to any one of the foregoing claims, characterized in that said cylinder (3) comprises on its face opposite from said end a threaded orifice (3e), receiving a screw (6) for fixing the locking component (5) and for maintaining the cylinder (3) in the housing (4c).
EP92420304A 1991-10-04 1992-09-10 Retention device for the key of a lock Expired - Lifetime EP0540429B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9112343A FR2682147B1 (en) 1991-10-04 1991-10-04 DEVICE FOR RETAINING A LOCK KEY.
FR9112343 1991-10-04

Publications (2)

Publication Number Publication Date
EP0540429A1 EP0540429A1 (en) 1993-05-05
EP0540429B1 true EP0540429B1 (en) 1996-03-06

Family

ID=9417681

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Application Number Title Priority Date Filing Date
EP92420304A Expired - Lifetime EP0540429B1 (en) 1991-10-04 1992-09-10 Retention device for the key of a lock

Country Status (8)

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US (1) US5237843A (en)
EP (1) EP0540429B1 (en)
BR (1) BR9203853A (en)
CA (1) CA2078964A1 (en)
DE (1) DE69208814T2 (en)
ES (1) ES2086705T3 (en)
FR (1) FR2682147B1 (en)
MX (1) MX9205667A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06257331A (en) * 1993-03-04 1994-09-13 Takigen Seizo Kk Detachable type lock handle device
JP3839932B2 (en) 1996-09-26 2006-11-01 キヤノン株式会社 Process cartridge, electrophotographic image forming apparatus, electrophotographic photosensitive drum and coupling
EP0905340A1 (en) * 1997-09-24 1999-03-31 Dzus Fastener Europe Limited Double action pawl latch
US7051563B2 (en) * 2003-01-21 2006-05-30 Key Systems, Inc. Door key retention security system
DE20303200U1 (en) * 2003-02-26 2003-05-08 Emka Beschlagteile cam lock
FR2885631B1 (en) * 2005-05-10 2008-09-05 Valeo Securite Habitacle Sas LOCK WITH ROTOR FASTENING ELEMENT
MX2017005407A (en) * 2014-10-31 2017-10-04 CommScope Connectivity Belgium BVBA Guaranteed closed safety lock.
US20160333919A1 (en) * 2016-07-25 2016-11-17 Caterpillar Inc. Method and system for installing keylock insert

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US1568434A (en) * 1923-03-29 1926-01-05 Patrick H Winterson Window lock
US1580611A (en) * 1923-11-20 1926-04-13 Ernest C Kirkpatrick Window lock
US1639661A (en) * 1926-03-15 1927-08-23 North Land Cedar Chest Company Fastening device for sealed containers
US2745275A (en) * 1954-10-07 1956-05-15 Briggs & Stratton Corp Means for securing an instrument to an instrument panel
US3251205A (en) * 1964-01-09 1966-05-17 Chicago Lock Co Quick-change axial pin-tumbler lock assembly
CA1002995A (en) * 1973-04-27 1977-01-04 Richard L. Moore Security lock
IT1092792B (en) * 1977-02-23 1985-07-12 Wilmot Breeden Ltd REFINEMENTS IN OR RELATED TO THE LOCKS
CH620263A5 (en) * 1977-06-07 1980-11-14 Feller Ag Safety lock
DE8427541U1 (en) * 1984-09-19 1985-01-03 Ramsauer, Dieter, 5620 Velbert SOCKET-ACTUABLE, LOCKABLE TAMERLOCK
US4878367A (en) * 1985-03-22 1989-11-07 Southco, Inc. Binary coded key and latch-actuator

Also Published As

Publication number Publication date
EP0540429A1 (en) 1993-05-05
CA2078964A1 (en) 1993-04-05
FR2682147B1 (en) 1993-11-26
US5237843A (en) 1993-08-24
DE69208814T2 (en) 1996-09-26
MX9205667A (en) 1993-04-01
ES2086705T3 (en) 1996-07-01
FR2682147A1 (en) 1993-04-09
DE69208814D1 (en) 1996-04-11
BR9203853A (en) 1993-04-27

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