EP0076711B1 - Automatically closing lock - Google Patents

Automatically closing lock Download PDF

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Publication number
EP0076711B1
EP0076711B1 EP82401566A EP82401566A EP0076711B1 EP 0076711 B1 EP0076711 B1 EP 0076711B1 EP 82401566 A EP82401566 A EP 82401566A EP 82401566 A EP82401566 A EP 82401566A EP 0076711 B1 EP0076711 B1 EP 0076711B1
Authority
EP
European Patent Office
Prior art keywords
flange
ramp
door
bolt
operating member
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
Application number
EP82401566A
Other languages
German (de)
French (fr)
Other versions
EP0076711A1 (en
Inventor
Jean Lafosse
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.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Priority to AT82401566T priority Critical patent/ATE18277T1/en
Publication of EP0076711A1 publication Critical patent/EP0076711A1/en
Application granted granted Critical
Publication of EP0076711B1 publication Critical patent/EP0076711B1/en
Expired legal-status Critical Current

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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
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/12—Fastening devices with bolts moving pivotally or rotatively with latching action
    • E05C3/14—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member rigid with the latch
    • E05C3/145—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member rigid with the latch pivoting about an axis perpendicular to the wing
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B17/00—Accessories in connection with locks
    • E05B17/0075—Insulating, e.g. for limiting heat transfer; Increasing fire-resistance of locks
    • 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
    • Y10T292/0863—Sliding and rotary
    • Y10T292/0867—Spring projected
    • 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
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5097—Cabinet
    • Y10T70/5102—Projecting lug type
    • 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
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5097—Cabinet
    • Y10T70/5111—Projectable bolt
    • 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
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5155—Door
    • Y10T70/5199—Swinging door
    • Y10T70/5246—Dead bolts
    • Y10T70/5296—Single
    • Y10T70/5345—Swinging
    • Y10T70/5363—Key operable only
    • 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
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5155—Door
    • Y10T70/5199—Swinging door
    • Y10T70/5372—Locking latch bolts, biased
    • Y10T70/5385—Spring projected
    • Y10T70/5389—Manually operable

Definitions

  • the invention relates to a lock, placed on a cabinet or cabinet door in the vicinity of a framing rim of an opening of this freight cof, comprising on the one hand a rotary operating member accessible from the exterior and rotating in a body integral with the door about an axis perpendicular to the plane thereof, and on the other hand an interior movable lock which is associated with the operating member and with a return spring which communicates a rest position, this lock first performs a backward movement by compressing the spring when the door is subjected to a force exerted in the direction of its closing and then performs a movement in the opposite direction which engages it under said edge.
  • a lock is described in US.A. 1863536.
  • Such locks can be placed on the doors of boxes or cupboards intended in particular to receive electrical equipment; in the latter case, these locks have the advantage of making it possible for the maintenance personnel to close the box without the security personnel, who alone have the means such as special keys usually used to operate the opening, to be present at that time.
  • the invention therefore proposes to provide a lock having the constitution and authorizing the use mentioned above which is simpler than the locks currently known and which is robust enough to withstand the shocks it undergoes when it is slammed the cabinet door.
  • the frame 6 of the opening has, in a manner known per se, a first flat portion 7 inclined with respect to the plane PP 'and directed towards the external volume 11 of the box, a second flat portion 8 inclined with respect to the same plane and directed towards the internal volume 10 and a rim or edge 9 which represents the more or less rounded intersection of these flat portions and which is in the plane PP '.
  • a lock 12 which is placed on a region 13 of the door, opposite the hinge 5, cooperates with the flange 14 opposite the flange 9 and with the first and second portions 15, 16 which are comparable and opposite to the preceding 7, 8 .
  • An elastically deformable seal 17 is placed between the rear surface 18 'of the wall 18 of the door 4 and ridges such as 19 which limit the first portion 15, 7 of the frame to the outside.
  • the rim 14 is actually a small cylindrical surface, resulting from the folding of the sheet metal of the housing, which is substantially placed in the plane PP 'and whose generatrices are parallel to this plane.
  • the lock 12 comprises a body 20 with an external flange 21 which passes through an opening 22 in the wall 18 and which is fixed thereon for example by means of a threaded nut 23 which is placed inside the door.
  • This body has a cylindrical housing of revolution or bearing 24, of axis YY 'substantially perpendicular to the plane of the wall 18, which opens outwards and inwards.
  • a cylindrical plug 25 constituting the operating member is placed in this housing and has on the one hand at its outer end 28 a head 26 provided with operating means 27, which allow it to rotate, and on the other hand, at its inner end 29 a portion 30 outside the housing; the means 27 are for example a transverse slot able to receive the end of a screwdriver not shown or a coin.
  • This portion 30 receives a lock 31 which is angularly associated with it, and which is axially held with it for example by a nut 32 cooperating with a threaded extension 33 of the portion 30.
  • the lock 31 mainly comprises a flange 34 which has an opening 35 , cooperating with the portion 30, and a rib lateral 36.
  • This rib has a first ramp 37 inclined with respect to the axis YY 'and directed towards the inside of the box, a second ramp 38 which is inclined towards the outside and a top 39 which is common to the two ramps.
  • the first ramp 37 has a contact point 40, located at the end of this ramp furthest from the wall 18 and one end which merges with the top 39 and is located closer to the wall 18 than the contact point 40.
  • the second ramp 38 is located between the top 39 and the wall 18 and extends to a transverse surface 38 'of the flange directed towards the wall.
  • An angular return spring 41 preferably helical placed coaxially to YY 'outside the body 20 and used as a torsion spring, communicates with the latch 31 a return coupling which tends to give it a rest position for defined closure further, visible in Figures 1, 2 and 5, thanks to the fact that its opposite ends 42 and 43 are hooked on the body and respectively on the latch.
  • FIG. 10 shows on the one hand that the distance' b "separating the contact point 40 from the axis YY 'is less than the distance 'd' separating the vertex 39 from this same axis, and which indicates that a straight line joining these two points 39 and 40, is inclined at an angle relative to this axis YY '; the straight line A therefore does not pass through the axis YY '.
  • the ramp 37 can follow a substantially rectilinear direction or on the contrary form a portion of conical helix.
  • the ramp 37 may also have a rounded shape, as shown by the local section through a plane RR 'visible in Figure 6, in order to facilitate its sliding against the rim 14 .
  • the friction which appears between the rim 14 and the ramp 37 can be further significantly reduced if the latch is made of an appropriate plastic.
  • the latch 31 When the door is open, the latch 31 is oriented in a rest position which is similar to that of FIG. 1.
  • a closing movement directed in direction F and communicated by a force exerted on the wall first brings the contact point 40 against the flange 14; due to the distance 'a "existing between this point 40 and the plane QQ' passing through YY 'perpendicular to XX', see Figures 3 and 4 and the existence of a tangential component T of the friction force between the point 40 and the rim 14, see FIG. 10, a rotation coupling C is communicated to the latch 31 which pivots around YY ′, this rotation of direction a which arms the spring 41, brings successive points of the ramp 37 against the rim 14 and allows the closing movement of the door to continue until the top 39 crosses this rim.
  • FIG. 7 An operation identical to that which has just been described can be obtained in an alternative embodiment using a different form of frame visible in FIG. 7 where it can be seen that the first frame portion 45 is of small width, while the second frame portion 46, placed in the extension of the rounded edge 47 towards the inside of the box, is located in a plane RR 'parallel to and close to PP'; in this case the shape of the bolt is slightly modified and the second ramp 38 of the previous bolt here consists of a surface 48 which can be plane perpendicular to YY 'or rounded with generatrices perpendicular to YY'.
  • This variant can be used with a seal 50 placed on the external surface of the second portion 46.
  • the rest position of the lock for which the apex 39 is substantially in the plane QQ 'visible in FIG. 3, can be determined by the cooperation between a bearing surface 50 placed in the bore of the body 20 and a stop 51 integral with the plug 25, see FIG. 2.
  • a second bearing surface 52 can also be used to limit the reverse movement of the lock.
  • the lock When the lock which has just been described is used with a plug 25 whose actuation is operated using the slot 27, the lock is angularly associated therewith for example using a pin 53 passing through the flange 34 and the end 30, or again by giving the end 30 a prismatic shape corresponding to that of the opening 35 of the eye 34.
  • the slot 27 of Figures 1 and 5 can be replaced by a housing of triangular, square or hexagonal section cooperating with the male part of a tool of the same shape, or even more advantageously by a tenon of triangular, square section or hexagonal, projecting from the bottom of a blind hole as shown in Figure 5bis.
  • the height g of the post being less than the depth h of the blind hole of diameter h, will advantageously be such that g to avoid actuation by a tool other than the key.
  • a lock cylinder 64 is used requiring the placing of a key 54 in the accessible part 53 so that the opening and closing operations can only be carried out by qualified personnel , see Figure 8, it is necessary that the latch 31 can rotate in the direction of opening, either independently of the state of the cylinder during an automatic closing operation by pressing on the cover. either with this cylinder, when the operation is carried out using the key.
  • FIG. 9 Such a coupling system is shown by way of example in FIG. 9 where the end 57 of the cylinder has a rod 59 of prismatic shape with a square section, while the eye 58 has an opening 60 having four grooves such that 61 in which the four edges 62 of the rod 59 can move by approximately 45 °.
  • the faces 69 of these grooves consist of cylindrical sections of a cylinder of diameter equal to the dimension of the diagonal of the square of the section of the rod 59.
  • the rod 59 abuts against the shoulders 65 in the rest position, while in the working position, the rotation is limited by the shoulders 68. It is obvious that any other device making it possible to obtain a angular freedom 0, can replace the above embodiment.
  • FIG. 11 is an alternative embodiment in which the helical ramp 37 has the same dimension d at its top as at its base and cooperates with a tongue 141 which projects from the rim 14. This tongue was obtained by not folding down part of the frame.
  • the seal 50 can be continuous, as shown in dotted lines in FIG. 11.
  • the tongue 141 has a round 142 on the working side. This rounding is obtained by punching the sheet so as to harden it to have the metal surface cooperating with the ramp during closing and to prevent wear on the ramp.
  • Figures 12 and 13 show an improvement of the closure device of Figure 7 where a lock 31 is used whose second ramp is formed by a flat surface 48 perpendicular to YY '.
  • the surface 48 When this part 67 is used with the lock 31 of FIG. 13, the surface 48, by engaging under one of the plates 670, will prevent the reopening of the cabinet, even if the force exerted on the door n is not enough to close the box tightly. When the force exerted on the door is sufficient to compress the seal, the surface 48 slides along the ramp 671 and is housed under the flat 672.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Lock And Its Accessories (AREA)
  • Refrigerator Housings (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Prostheses (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Vehicle Body Suspensions (AREA)
  • Soil Working Implements (AREA)
  • Casings For Electric Apparatus (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Toilet Supplies (AREA)
  • Connection Of Plates (AREA)

Abstract

A self-locking lock assembly for a cabinet or locker door includes a rotary operating member (25) having a head (26) adapted to be operated from the exterior of the door, and an inner bolt (31) provided with a rib (36) inclined with respect to the axis of said operating member so that its cooperation with a flange (14) of a door opening (3) causes it to rotate while compressing a return spring (41) whenever the door is manually pushed. The lock assembly can advantageously be used in cabinets or lockers the doors of which must be opened only by safety personnel, but may be closed by maintenance personnel.

Description

L'invention se rapporte à une serrure, placée sur une porte de coffret ou d'armoire au voisinage d'un rebord d'encadrement d'une ouverture de ce cof fret, comprenant d'une part un organe de manoeuvre rotatif accessible depuis l'extérieur et tournant dans un corps solidaire de la porte autour d'un axe perpendiculaire au plan de celle-ci, et d'autre part un verrou mobile intérieur qui est associé à l'organe de manoeuvre et à un ressort de rappel qui lui communique une position de repos, ce verrou effectue d'abord un mouvement de recul en comprimant le ressort lorsque la porte est soumise à un effort exercé en direction de sa fermeture et effectue ensuite un mouvement en sens inverse qui l'engage sous ledit rebord. Une telle serrure est décrite dans US.A. 1863536.The invention relates to a lock, placed on a cabinet or cabinet door in the vicinity of a framing rim of an opening of this freight cof, comprising on the one hand a rotary operating member accessible from the exterior and rotating in a body integral with the door about an axis perpendicular to the plane thereof, and on the other hand an interior movable lock which is associated with the operating member and with a return spring which communicates a rest position, this lock first performs a backward movement by compressing the spring when the door is subjected to a force exerted in the direction of its closing and then performs a movement in the opposite direction which engages it under said edge. Such a lock is described in US.A. 1863536.

De telles serrures peuvent être disposées sur les portes de coffrets ou d'armoires destinés à recevoir en particulier du matériel électrique; dans ce dernier cas, ces serrures présentent l'avantage de rendre possible la fermeture du coffret par le personnel de maintenance sans que le personnel de sécurité, qui dispose seul des moyens tels que des clés spéciales habituellement utilisées pour en opérer l'ouverture doive être présent à ce moment là.Such locks can be placed on the doors of boxes or cupboards intended in particular to receive electrical equipment; in the latter case, these locks have the advantage of making it possible for the maintenance personnel to close the box without the security personnel, who alone have the means such as special keys usually used to operate the opening, to be present at that time.

L'invention se propose par suite de fournir une serrure présentant la constitution et autorisant l'utilisation mentionnées ci-dessus qui soit plus simple que les serrures actuellement connues et qui soit suffisamment robuste pour résister aux chocs qu'elle subit lorsque l'on claque la porte du coffret.The invention therefore proposes to provide a lock having the constitution and authorizing the use mentioned above which is simpler than the locks currently known and which is robust enough to withstand the shocks it undergoes when it is slammed the cabinet door.

Selon l'invention, ce résultat est obtenu grâce à une serrure selon la revendication 1.According to the invention, this result is obtained by means of a lock according to claim 1.

Les dispositions qui viennent d'etre mentionnées ainsi que d'autres particularités et d'autres mesures prévues pour améliorer le fonctionnement de cette serrure et lui conférer une grande simplicité, seront mieux comprises à l'aide de la description ci-apres.The provisions which have just been mentioned as well as other particularities and other measures provided for improving the operation of this lock and giving it great simplicity, will be better understood with the aid of the description below.

Au dessin annexe:

  • La figure 1 représente, vu en coupe longitudinale QQ', un coffret équipé d'une serrure pouvant s'ouvrir à l'aide d'un outil et se fermer sans l'aide de cet outil;
  • La figure 2 montre une vue en coupe longitudinale de la serrure seule;
  • La figure 3 represente une vue de droite extérieure de la serrure selon les figures 1 et 2;
  • La figure 4 illustre une vue extérieure de dessous de la serrure;
  • La figure 5 représente une vue de dessus extérieure de la serrure;
  • La figure 5bis représente une vue en coupe des moyens d'actionnement de la serrure;
  • La figure 6 montre un détail du verrou;
  • La figure 7 représente un second mode de réalisation de la serrure;
  • La figure 8 représente en coupe longitudinale une serrure pouvant s'ouvrir à l'aide d'une clé;
  • La figure 9 montre une vue de dessous du verrou de la serrure selon la figure 8;
  • La figure 10 représente de façon schématique la position d'une rampe du verrou par rapport à l'axe de rotation YY'.
  • La figure 11 représente un troisième mode de réalisation de la serrure;
  • La figure 12 représente en perspective une pièce que l'on soude sur le rebord interne de l'encadrement: et
  • La figure 13 représente un quatrième mode de réalisation de la serrure utilisant la pièce de la figure 12.
In the accompanying drawing:
  • Figure 1 shows, seen in longitudinal section QQ ', a box equipped with a lock which can be opened with the aid of a tool and closed without the aid of this tool;
  • Figure 2 shows a longitudinal sectional view of the lock alone;
  • Figure 3 shows an exterior right view of the lock according to Figures 1 and 2;
  • Figure 4 illustrates an exterior view from below of the lock;
  • Figure 5 shows an exterior top view of the lock;
  • FIG. 5bis represents a sectional view of the means for actuating the lock;
  • Figure 6 shows a detail of the lock;
  • Figure 7 shows a second embodiment of the lock;
  • Figure 8 shows in longitudinal section a lock that can be opened with a key;
  • Figure 9 shows a bottom view of the lock of the lock according to Figure 8;
  • FIG. 10 schematically represents the position of a ramp of the latch relative to the axis of rotation YY '.
  • Figure 11 shows a third embodiment of the lock;
  • FIG. 12 represents in perspective a part which is welded on the internal edge of the frame: and
  • FIG. 13 represents a fourth embodiment of the lock using the part of FIG. 12.

Un coffret 1 représenté à la figure 1, à titre d'exemple d'application de l'invention non limitatif, comprend principalement un boîtier 2 ayant une ouverture 3 une porte 4 et une charnière 5 pivotant autour d'un axe XX', qui est sensiblement parallèle au plan PP' de l'ouvertureA box 1 shown in FIG. 1, by way of example of nonlimiting application of the invention, mainly comprises a box 2 having an opening 3 a door 4 and a hinge 5 pivoting about an axis XX ', which is substantially parallel to the plane PP 'of the opening

L'encadrement 6 de l'ouverture présente de façon connue en soi une première portion plane 7 inclinée par rapport au plan PP' et dirigée vers le volume extérieur 11 du coffret, une seconde portion plane 8 inclinée par rapport au meme plan et dirigée vers le volume intérieur 10 et un rebord ou arête 9 qui représente l'intersection plus ou moins arrondie de ces portions planes et qui se trouve dans le plan PP'.The frame 6 of the opening has, in a manner known per se, a first flat portion 7 inclined with respect to the plane PP 'and directed towards the external volume 11 of the box, a second flat portion 8 inclined with respect to the same plane and directed towards the internal volume 10 and a rim or edge 9 which represents the more or less rounded intersection of these flat portions and which is in the plane PP '.

Une serrure 12 qui se trouve placée sur une région 13 de la porte, opposée à la charnière 5, coopère avec le rebord 14 opposé au rebord 9 et avec les première et seconde portions 15, 16 qui sont comparables et opposées aux précédentes 7, 8.A lock 12 which is placed on a region 13 of the door, opposite the hinge 5, cooperates with the flange 14 opposite the flange 9 and with the first and second portions 15, 16 which are comparable and opposite to the preceding 7, 8 .

Un joint d' étanchéité 17 élastiquement déformable est place entre la surface arrière 18' de la paroi 18 de la porte 4 et des aretes telles que 19 qui limitent la première portion 15, 7 de l'encadrement vers l'extérieur.An elastically deformable seal 17 is placed between the rear surface 18 'of the wall 18 of the door 4 and ridges such as 19 which limit the first portion 15, 7 of the frame to the outside.

Le rebord 14 est en réalité une petite surface cylindrique, résultant du pliage de la tôle du boîtier, qui est sensiblement placée dans le plan PP' et dont les génératrices sont parallèles à ce plan.The rim 14 is actually a small cylindrical surface, resulting from the folding of the sheet metal of the housing, which is substantially placed in the plane PP 'and whose generatrices are parallel to this plane.

La serrure 12 comprend un corps 20 à collerette extérieure 21, qui traverse une ouverture 22 de la paroi 18 et qui est fixé sur celle-ci par exemple à l'aide d'un écrou fileté 23 qui est placé à l'interieur de la porte. Ce corps présente un logement cylindrique de revolution ou palier 24, d'axe YY' sensiblement perpendiculaire au plan de la paroi 18, qui debouche vers l'extérieur et vers l'intérieur.The lock 12 comprises a body 20 with an external flange 21 which passes through an opening 22 in the wall 18 and which is fixed thereon for example by means of a threaded nut 23 which is placed inside the door. This body has a cylindrical housing of revolution or bearing 24, of axis YY 'substantially perpendicular to the plane of the wall 18, which opens outwards and inwards.

Un boisseau cylindrique 25 constituant l'organe de manoeuvre, est placé dans ce logement et presente d'une part à son extrémité exterieure 28 une tete 26 pourvue de moyens de manoeuvre 27, qui permettent de le faire tourner, et d'autre part, à son extrémité intérieure 29 une portion 30 extérieure au logement; les moyens 27 sont par exemple une fente transversale apte à recevoir l'extrémité d'un tournevis non représenté ou une pièce de monnaie.A cylindrical plug 25 constituting the operating member, is placed in this housing and has on the one hand at its outer end 28 a head 26 provided with operating means 27, which allow it to rotate, and on the other hand, at its inner end 29 a portion 30 outside the housing; the means 27 are for example a transverse slot able to receive the end of a screwdriver not shown or a coin.

Cette portion 30 reçoit un verrou 31 qui lui est angulairement associé, et qui est axialement maintenu avec elle par exemple par un écrou 32 coopérant avec un prolongement fileté 33 de la portion 30. Le verrou 31 comprend principalement une collerette 34 qui présente une ouverture 35, coopérant avec la portion 30, et une nervure latérale 36.This portion 30 receives a lock 31 which is angularly associated with it, and which is axially held with it for example by a nut 32 cooperating with a threaded extension 33 of the portion 30. The lock 31 mainly comprises a flange 34 which has an opening 35 , cooperating with the portion 30, and a rib lateral 36.

Cette nervure présente une première rampe 37 inclinée par rapport à l'axe YY' et dirigée vers l'intérieur du coffret, une seconde rampe 38 qui est inclinée vers l'extérieur et un sommet 39 qui est commun aux deux rampes.This rib has a first ramp 37 inclined with respect to the axis YY 'and directed towards the inside of the box, a second ramp 38 which is inclined towards the outside and a top 39 which is common to the two ramps.

Comme on le voit mieux aux figures 2 et 3, la première rampe 37 présente un point de contact 40, situé à l'extrémité de cette rampe la plus éloignée de la paroi 18 et une extrémité qui se confond avec le sommet 39 et se trouve plus près de la paroi 18 que le point de contact 40.As best seen in Figures 2 and 3, the first ramp 37 has a contact point 40, located at the end of this ramp furthest from the wall 18 and one end which merges with the top 39 and is located closer to the wall 18 than the contact point 40.

La seconde rampe 38 se trouve entre le sommet 39 et la paroi 18 et se prolonge jusqu'à une surface transversale 38' de la collerette dirigée vers la paroi.The second ramp 38 is located between the top 39 and the wall 18 and extends to a transverse surface 38 'of the flange directed towards the wall.

Un ressort de rappel angulaire 41, de préférence hélicoidal placé coaxialement à YY' à l'extérieur du corps 20 et utilisé en ressort de torsion, communique au verrou 31 un couplé de rappel qui tend à lui donner une position de repos pour la fermeture définie plus loin, visible aux figures 1, 2 et 5, grâce au fait que ses extrémités opposées 42 et 43 sont accrochées sur le corps et respectivement sur le verrou.An angular return spring 41, preferably helical placed coaxially to YY 'outside the body 20 and used as a torsion spring, communicates with the latch 31 a return coupling which tends to give it a rest position for defined closure further, visible in Figures 1, 2 and 5, thanks to the fact that its opposite ends 42 and 43 are hooked on the body and respectively on the latch.

La position dans l'espace de la première rampe par rapport à l'axe YY' est mieux visible à la figure 10 qui montre d'une part que la distance 'b" séparant le point de contact 40 de l'axe YY' est inférieure à la distance 'd" séparant le sommet 39 de ce même axe, et qui indique qu'une droite joignant ces deux points 39 et 40, est inclinée d'un angle par rapport à cet axe YY'; la droite A ne passe donc pas par l'axe YY'. Entre les points 39 et 40 la rampe 37 peut suivre une direction sensiblement rectiligne ou au contraire former une portion d'hélice conique.The position in space of the first ramp with respect to the axis YY 'is better visible in FIG. 10 which shows on the one hand that the distance' b "separating the contact point 40 from the axis YY 'is less than the distance 'd' separating the vertex 39 from this same axis, and which indicates that a straight line joining these two points 39 and 40, is inclined at an angle relative to this axis YY '; the straight line A therefore does not pass through the axis YY '. Between the points 39 and 40 the ramp 37 can follow a substantially rectilinear direction or on the contrary form a portion of conical helix.

On voit également sur les figures 3 et 5 qu'au moins une partie de surface 44 de la seconde rampe 38 placée au voisinage du sommet 39 est au contraire placée sensiblement dans un plan QQ' qui passe par ce sommet et par l'axe YY'.It can also be seen in FIGS. 3 and 5 that at least part of the surface 44 of the second ramp 38 placed in the vicinity of the vertex 39 is on the contrary placed substantially in a plane QQ 'which passes through this vertex and through the axis YY '.

Entre le point de contact 40 et le sommet 39, la rampe 37 peut par ailleurs avoir une forme arrondie, ainsi que le montre la coupe locale par un plan RR' visible à la figure 6, af in de faciliter son glissement contre le rebord 14.Between the contact point 40 and the apex 39, the ramp 37 may also have a rounded shape, as shown by the local section through a plane RR 'visible in Figure 6, in order to facilitate its sliding against the rim 14 .

Le frottement qui apparait entre le rebord 14 et la rampe 37 peut être encore sensiblement réduit si l'on réalise le verrou en une matière plastique appropriée.The friction which appears between the rim 14 and the ramp 37 can be further significantly reduced if the latch is made of an appropriate plastic.

Lorsque la porte est ouverte, le verrou 31 se trouve orienté dans une position de repos qui est analogue à celle de la figure 1.When the door is open, the latch 31 is oriented in a rest position which is similar to that of FIG. 1.

Un mouvement de fermeture dirigé en sens F et communiqué par une force exercée sur la paroi amene d'abord le point de contact 40 contre le rebord 14; en raison de la distance 'a" existant entre ce point 40 et le plan QQ' passant par YY' perpendiculairement à XX', voir figures 3 et 4 et de l'existence d'une composante tangentielle T de la force de frottement entre le point 40 et le rebord 14, voir figure 10, un couplé de rotation C est communiqué au verrou 31 qui pivote autour de YY', cette rotation de sens a qui arme le ressort 41, amène des points successifs de la rampe 37 contre le rebord 14 et permet la poursuite du mouvement de fermeture de la porte jusqu' au moment où le sommet 39 franchit ce rebord. Le franchissement du rebord par le sommet du verrou permet un mouvement du verrou en sens inverse de a sous l'effet du ressort de rappel et la serrure se retrouve dans la position de repos illustrée à la figure 1, dans laquelle la seconde rampe 38 est appuyée contre la seconde portion 16 de l'encadrement. Cet appui qui est maintenu grâce à la compression du joint d'étanchéité 17 ne peut pas provoquer de mouvement angulaire du verrou par rapport au corps 20 en raison du fait que la surface 44 de la rampe 38 est alors sensiblement contenue dans le plan QQ'.A closing movement directed in direction F and communicated by a force exerted on the wall first brings the contact point 40 against the flange 14; due to the distance 'a "existing between this point 40 and the plane QQ' passing through YY 'perpendicular to XX', see Figures 3 and 4 and the existence of a tangential component T of the friction force between the point 40 and the rim 14, see FIG. 10, a rotation coupling C is communicated to the latch 31 which pivots around YY ′, this rotation of direction a which arms the spring 41, brings successive points of the ramp 37 against the rim 14 and allows the closing movement of the door to continue until the top 39 crosses this rim. The crossing of the rim by the top of the bolt allows the bolt to move in opposite direction from a under the effect of the spring of return and the lock is found in the rest position illustrated in FIG. 1, in which the second ramp 38 is pressed against the second portion 16 of the frame, this support which is maintained thanks to the compression of the seal 17 cannot cause angular movement of the glass u relative to the body 20 due to the fact that the surface 44 of the ramp 38 is then substantially contained in the plane QQ '.

Un fonctionnement identique à celui qui vient d'être décrit peut être obtenu dans une variante de réalisation faisant appel à une forme d'encadrement dif férente et visible à la figure 7 où l'on constate que la première portion d'encadrement 45 est de faibie largeur, tandis que la seconde portion d'encadrement 46, placée dans le prolongement du rebord arrondi 47 vers l'intérieur du coffret, est située dans un plan RR' parallèle à et voisin de PP'; dans ce cas la forme du verrou est légèrement modifiée et la seconde rampe 38 du-verrou précédent est constituée ici par une surface 48 qui peut être plane perpendiculairement à YY' ou arrondie avec des génératrices perpendiculaires à YY'. Cette variante peut être utilisée avec un joint d' étanchéité 50 placé sur la surface externe de la seconde portion 46.An operation identical to that which has just been described can be obtained in an alternative embodiment using a different form of frame visible in FIG. 7 where it can be seen that the first frame portion 45 is of small width, while the second frame portion 46, placed in the extension of the rounded edge 47 towards the inside of the box, is located in a plane RR 'parallel to and close to PP'; in this case the shape of the bolt is slightly modified and the second ramp 38 of the previous bolt here consists of a surface 48 which can be plane perpendicular to YY 'or rounded with generatrices perpendicular to YY'. This variant can be used with a seal 50 placed on the external surface of the second portion 46.

La position de repos du verrou pour laquelle le sommet 39 se trouve sensiblement dans le plan QQ' visible à la figure 3, peut être déterminée par la coopération entre une surface d'appui 50 placée dans l'alésage du corps 20 et une butée 51 solidaire du boisseau 25, voir figure 2. Une seconde surface d'appui 52 peut être également utilisée pour limiter le mouvement inverse du verrou.The rest position of the lock for which the apex 39 is substantially in the plane QQ 'visible in FIG. 3, can be determined by the cooperation between a bearing surface 50 placed in the bore of the body 20 and a stop 51 integral with the plug 25, see FIG. 2. A second bearing surface 52 can also be used to limit the reverse movement of the lock.

Lorsque la serrure qui vient d'être décrite est utilisée avec un boisseau 25 dont l'actionnement est opéré à l'aide de la fente 27, le verrou est associé angulairement à celuici par exemple à l'aide d'une goupille 53 traversant la collerette 34 et l'extrémité 30, ou encore en donnant à l'extrémité 30 une forme prismatique correspondant à celle de l'ouverture 35 de l'oeil 34.When the lock which has just been described is used with a plug 25 whose actuation is operated using the slot 27, the lock is angularly associated therewith for example using a pin 53 passing through the flange 34 and the end 30, or again by giving the end 30 a prismatic shape corresponding to that of the opening 35 of the eye 34.

Les mouvements du verrou seront alors solidaires de ceux du boisseau, soit que celui-ci est actionné depuis l'extérieur pour ouvrir la porte, soit au contraire que le verrou entraîne le boisseau au cours d'une fermeture de la porte opérée par une pression sur la paroi du couvercle.The movements of the lock will then be integral with those of the plug, either that it is actuated from the outside to open the door, or on the contrary that the lock drives the plug during a closing of the door operated by a pressure on the wall of the cover.

La fente 27 des figures 1 et 5 peut être remplacée par un logement de section triangulaire, carré ou hexagonal coopérant avec la partie mâle d'un outil de même forme, ou encore de façon, plus avantageuse, par un tenon de section triangulaire, carré ou hexagonal, placé en saillie au fond d'un trou borgne comme représenté à la figure 5bis. La hauteur g du tenon étant inférieure à la profondeur h du trou borgne de diamètre h, sera avantageusement telle que g

Figure imgb0001
pour éviter l'actionnement par un outil autre que la clé.The slot 27 of Figures 1 and 5 can be replaced by a housing of triangular, square or hexagonal section cooperating with the male part of a tool of the same shape, or even more advantageously by a tenon of triangular, square section or hexagonal, projecting from the bottom of a blind hole as shown in Figure 5bis. The height g of the post being less than the depth h of the blind hole of diameter h, will advantageously be such that g
Figure imgb0001
 to avoid actuation by a tool other than the key.

Lorsqu'à la placé du boisseau 25, on utilise un cylindre de serrure 64 nécessitant la mise en placé d'une clé 54 dans la partie accessible 53 pour que les manoeuvres d'ouverture et de fermeture ne puissent être opérées que par le personnel qualifié, voir figure 8, il est nécessaire que le verrou 31 puisse tourner dans le sens de l'ouverture, soit indépendamment de l'état du cylindre lors d'une manoeuvre de fermeture automatique par pression sur le couvercle. soit avec ce cylindre, lorsque la manoeuvre est effectuée à l'aide de la clé.When at the position of the plug 25, a lock cylinder 64 is used requiring the placing of a key 54 in the accessible part 53 so that the opening and closing operations can only be carried out by qualified personnel , see Figure 8, it is necessary that the latch 31 can rotate in the direction of opening, either independently of the state of the cylinder during an automatic closing operation by pressing on the cover. either with this cylinder, when the operation is carried out using the key.

La nécessite de cette indépendance est justifiée par le fait que lorsque la clé a été retirée du boisseau 53, celui- ci se trouve immobilisé par rapport au corps 63, voir figure 8, par exemple en raison de la coopération d'un ou de plusieurs verrous éclipsables 55 avec une encoche ou rainure interne 56 du palier du corps 63; un mouvement de fermeture de la porte par pression sur la paroi et une rotation correspondante a du verrou ne peuvent donc se produire que si un accouplément donnant au verrou une certaine liberté d'angle ¢ dans une direction a est disposé entre l'extremite 57 du cylindre 53 et l'oeil 58 du verrou.The need for this independence is justified by the fact that when the key has been removed from the plug 53, the latter is immobilized relative to the body 63, see FIG. 8, for example due to the cooperation of one or more eclipsable locks 55 with an internal groove or notch 56 in the bearing of the body 63; a closing movement of the door by pressing on the wall and a corresponding rotation a of the bolt can therefore only occur if a coupling giving the bolt a certain freedom of angle ¢ in a direction a is disposed between the end 57 of the cylinder 53 and eye 58 of the lock.

Un tel système d'accouplément est représenté à titre d'exemple à la figure 9 où l'extremite 57 du cylindre présente une tige 59 de forme prismatique à section carrée, tandis que l'oeil 58 comporte une ouverture 60 présentant quatre cannelures telles que 61 dans lesquelles peuvent se déplacer d'environ 45° les quatre arêtes 62 de la tige 59. Les faces 69 de ces cannelures sont constituées par des sections cylindriques d'un cylindre de diamètre égal à la dimension de la diagonale du carré de la section de la tige 59. La tige 59 venant en butée contre les épaulements 65 dàns la position repos, alors qu'en position de travail, la rotation est limitée par les épaulements 68. Il est bien évident que tout autre dispositif permettant d'obtenir une liberté angulaire 0, peut remplacer le mode de réalisation ci-dessus. Ainsi on pourrait prévoir une saillie se déplaçant dans une gorge entre deux positions délimitées par deux butées comme représenté en 66 à la figure 11.Such a coupling system is shown by way of example in FIG. 9 where the end 57 of the cylinder has a rod 59 of prismatic shape with a square section, while the eye 58 has an opening 60 having four grooves such that 61 in which the four edges 62 of the rod 59 can move by approximately 45 °. The faces 69 of these grooves consist of cylindrical sections of a cylinder of diameter equal to the dimension of the diagonal of the square of the section of the rod 59. The rod 59 abuts against the shoulders 65 in the rest position, while in the working position, the rotation is limited by the shoulders 68. It is obvious that any other device making it possible to obtain a angular freedom 0, can replace the above embodiment. Thus one could provide a projection moving in a groove between two positions delimited by two stops as shown at 66 in FIG. 11.

La figure 11 est une variante d'exécution dans laquelle la rampe hélicoidale 37 a la même dimension d à son sommet qu'à sa base et coopere avec une languette 141 qui est en saillie par rapport au rebord 14. Cette languette a été obtenue en ne rabattant pas une partie de l'encadrement. Dans une variante le joint d' étanchéité 50 peut être continu, comme représenté en pointillé à la figure 11. La languette 141 comporte un arrondi 142 sur le côté qui travaille. Cet arrondi est obtenu en poinçonnant la tôle de façon à 1' écrouir pour avoir la surface métallique coopérant avec la rampe lors de la fermeture et éviter les usures de la rampe.FIG. 11 is an alternative embodiment in which the helical ramp 37 has the same dimension d at its top as at its base and cooperates with a tongue 141 which projects from the rim 14. This tongue was obtained by not folding down part of the frame. In a variant, the seal 50 can be continuous, as shown in dotted lines in FIG. 11. The tongue 141 has a round 142 on the working side. This rounding is obtained by punching the sheet so as to harden it to have the metal surface cooperating with the ramp during closing and to prevent wear on the ramp.

Les figures 12 et 13 représentent une amélioration du dispositif de fermeture de la f igure 7 où l'on utilise un verrou 31 dont la seconde rampe est constituée par une surface plane 48 perpendiculairement à YY'.Figures 12 and 13 show an improvement of the closure device of Figure 7 where a lock 31 is used whose second ramp is formed by a flat surface 48 perpendicular to YY '.

Sur la première portion inclinée 15 de l'encadrement, on vient souder une pièce 67 représentée à la figure 12 et comportant entre deux portions planes 670 deux rampes 671 qui débouchent sur un plateau 672.On the first inclined portion 15 of the frame, one comes to weld a part 67 shown in FIG. 12 and comprising between two flat portions 670 two ramps 671 which open onto a plate 672.

Lorsqu'on utilise cette pièce 67 avec le verrou 31 de la f igure 13, la surface 48, en s'engageant sous un des plats 670, va empêcher la réouverture de l'armoire, même si l'effort exercé sur la porte n'est pas suffisant pour fermer hermétiquement le coffret. Lorsque l'effort exercé sur la porte est suffisant pour comprimer le joint d'étanchéité, la surface 48 glisse le long de la rampe 671 et vient se loger sous le plat 672.When this part 67 is used with the lock 31 of FIG. 13, the surface 48, by engaging under one of the plates 670, will prevent the reopening of the cabinet, even if the force exerted on the door n is not enough to close the box tightly. When the force exerted on the door is sufficient to compress the seal, the surface 48 slides along the ramp 671 and is housed under the flat 672.

Claims (8)

1. A lock assembly disposed on a cabinet or locker door (18) adjacent to a flange of a frame surrounding an opening in said cabinet, including, on the one hand, a rotary operating member (25) accessible from the exterior and rotatable within a body integral with the door (18) about an axis extending in a direction orthogonal to the plane of the door and, on the other hand, an inner movable bolt (31) which is associated to said operating member (25) and to a return spring (41) biasing it towards an inoperative position, characterized in that said bolt (31) is provided with at least one inclined ramp (37) adapted to cooperate with said flange so that said bolt first rotates while compressing the spring (41) whenever a force is applied to the door (18) in a direction tending to close it, and then rotates in the opposite direction and thus engages itself under a wall (16, respectively 46, 670) of frame (12) extending said flange (14) towards the inner space (10) of the cabinet or under an extension (141) of said flange (14), any opening of the lock being possible only by inserting either a key or a tool in said operating member, said bolt (31) including a flange (34) angularly associated to a lower end (30) of said operating member (25), said ramp (37) being inclined with respect to axis (YY') of said operating member, not extending through said axis, initially contacting the rounded edge (14, 142) upon closure of the door (18) and having an end (39) which subsequently engages under the wall (16, 46, 670 respectively) of said frame (12) extending from said flange (14) towards the inner space (10) of the cabinet, or under the extension (141) of said flange (14).
2. A lock assembly according to claim 1, characterized in that said end (39) of said ramp (37) forms a crest common with a second ramp (38) this latter being inclined in the opposite direction with respect to the first ramp and which substantially extends towards axis YY" so as to engage itself under an inclined portion(16) of the frame wall when the door is in its closed position.
3. A lock assembly according to claim 1 or 2, characterized in that said ramp has, on the one hand, a first contact point (40) spaced from said axis γγ' by a first distance (b) and contacting said rounded flange (14) when the door (18) is being closed; and, on the other hand, said end (39) which is spaced from said axis YY' by a second distance (d) greater than said first distance (b).
4. A lock assembly according to claim 1 or 3, characterized in that said end (39) of said ramp (37) forms a crest common with a planar portion (48) orthogonal to the bolt rotation axis and cooperating either with a planar surface (46) of the inner flange of said frame, or with planar surfaces (670, 672) of a member (67) added to said flange.
5. A lock assembly according to claim 4, characterized in that said member (67) has parallel planar surfaces (670, 672) interconnected by at least one ramp.
6. A lock assembly according to any one of claims 1 to 5, characterized in that said bolt (31) is coupled with a first end (43) of a helical spring (41) acting as a torsion spring, a second end (42) of said spring being coupled with a cylindrical body (20) about which said spring is disposed, said body being provided with a bearing (24) in which said operating member. (25) is coaxially pivoted.
7. A lock assembly according to any one of claims 1 to 6, characterized in that said operating member (25) is provided with an outer head (26) having shaped surfaces (27) adapted to cooperate with a tool and has an inner end (30) integral with said flange of said bolt (31) which is disposed thereon.
8. A lock assembly according to any one of claims 1 to 7, characterized in that the operating member (64) comprises, on the one hand, a barrel portion (53) accessible from the exterior which is adapted to cooperate with a key (54) so that it can be angularly secured to or released from body (63) and, on the other hand, an inner end (57) which is associated to said flange (58) of said bolt with an angular clearance (Φ) such that said bolt can move when the key is withdrawn from said barrel portion, thus securing said barrel portion to said body (63).
EP82401566A 1981-10-06 1982-08-24 Automatically closing lock Expired EP0076711B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401566T ATE18277T1 (en) 1981-10-06 1982-08-24 AUTOMATICALLY CLOSING LOCK.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8119125A FR2514060A1 (en) 1981-10-06 1981-10-06 AUTOMATIC CLOSING LOCK WITH SWIVEL CLUTCH
FR8119125 1981-10-06

Publications (2)

Publication Number Publication Date
EP0076711A1 EP0076711A1 (en) 1983-04-13
EP0076711B1 true EP0076711B1 (en) 1986-02-26

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ID=9262935

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EP82401566A Expired EP0076711B1 (en) 1981-10-06 1982-08-24 Automatically closing lock

Country Status (8)

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US (1) US4494781A (en)
EP (1) EP0076711B1 (en)
JP (1) JPS58127875A (en)
AT (1) ATE18277T1 (en)
DE (1) DE3269395D1 (en)
DK (1) DK158212C (en)
ES (1) ES516234A0 (en)
FR (1) FR2514060A1 (en)

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DK163593B (en) * 1989-04-04 1992-03-16 Joergen Loegstrup CLOSING ORGANIZATION FOR BEARINGS, DOORS, FLOORS, DRAWERS AND SIMILAR AND USE THEREOF
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JP6169756B1 (en) * 2016-05-30 2017-07-26 株式会社ベスト Locking and unlocking mechanism of the hinged door
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Also Published As

Publication number Publication date
ES8307036A1 (en) 1983-06-16
DK158212B (en) 1990-04-09
ES516234A0 (en) 1983-06-16
FR2514060A1 (en) 1983-04-08
DK443882A (en) 1983-04-07
ATE18277T1 (en) 1986-03-15
DK158212C (en) 1990-09-03
JPH0258431B2 (en) 1990-12-07
DE3269395D1 (en) 1986-04-03
JPS58127875A (en) 1983-07-30
FR2514060B1 (en) 1984-01-13
EP0076711A1 (en) 1983-04-13
US4494781A (en) 1985-01-22

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