EP0107525A1 - Locking systems for telescopic ball-borne slides - Google Patents

Locking systems for telescopic ball-borne slides Download PDF

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Publication number
EP0107525A1
EP0107525A1 EP83401722A EP83401722A EP0107525A1 EP 0107525 A1 EP0107525 A1 EP 0107525A1 EP 83401722 A EP83401722 A EP 83401722A EP 83401722 A EP83401722 A EP 83401722A EP 0107525 A1 EP0107525 A1 EP 0107525A1
Authority
EP
European Patent Office
Prior art keywords
pawl
ramp
slide
locking
rod
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.)
Withdrawn
Application number
EP83401722A
Other languages
German (de)
French (fr)
Inventor
Alain Couppey
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.)
Conseil-Organisation-Gestion-Etudes -Participations Cogep Dite Ste
Original Assignee
Conseil-Organisation-Gestion-Etudes -Participations Cogep Dite Ste
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.)
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Publication date
Application filed by Conseil-Organisation-Gestion-Etudes -Participations Cogep Dite Ste filed Critical Conseil-Organisation-Gestion-Etudes -Participations Cogep Dite Ste
Publication of EP0107525A1 publication Critical patent/EP0107525A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/50—Safety devices or the like for drawers
    • A47B88/57—Safety devices or the like for drawers preventing complete withdrawal of the drawer
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/49—Sliding drawers; Slides or guides therefor with double extensible guides or parts
    • A47B88/493—Sliding drawers; Slides or guides therefor with double extensible guides or parts with rollers, ball bearings, wheels, or the like
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0002—Guide construction for drawers
    • A47B2210/0029—Guide bearing means
    • A47B2210/0032—Balls
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0002—Guide construction for drawers
    • A47B2210/0051—Guide position
    • A47B2210/0059—Guide located at the side of the drawer

Definitions

  • the present invention relates to an improved safety locking system for telescopic ball bearing slides, of the type used on machines or equipment capable of moving under conditions of precarious stability.
  • the object of the present invention is to provide a safety locking system for telescopic ball bearing slides carrying such drawers, which better meets the needs of practice than the safety systems known in the prior art, in that it absolutely eliminates the disadvantage and the risks mentioned above, in particular in that it ensures an infallible locking of the drawer in the limited open position, even in the event of too rapid operation of the drawer or destabilization of the machine on which the latter is mounted.
  • the present invention relates to a safety locking system for telescopic ball bearing slides carrying a "rack" or drawer, or the like, of the type comprising a locking pawl which cooperates with a recess formed between two locking ramps, to achieve the locking when the rack or the like has reached a determined limited open position,
  • safety locking system is characterized in that said locking pawl has a heel having an appropriate profile and cooperates with a housing intended to receive it and delimited by two locking ramps, one of which is integral with the fixed intermediate piece of the slide and has, at its end near said pawl, an appropriate profile, capable of cooperating with the latter and the other of which is an integral part of an associated rod to the movable slider of the slide, said second ramp being provided at the inner end of said rod and having a prof it suitable able to cooperate with the locking pawl.
  • the end of the first ramp which is adjacent to the locking pawl has the shape of a nose against which the heel of said pawl abuts when said pawl is in its locked position.
  • the above-mentioned rod has at its inner end a heel, the inner profile of which constitutes a cam surface on which the back of said pawl moves to assume its locking position , the upper part of said cam surface being such that it is sen4blezent parallel to the back of the pawl when the latter is in the locking position.
  • said rod comprises in the vicinity of its heel, a notch delimited on the heel side by said cam surface and, on the opposite side, by an inclined wall which is such that it is substantially parallel to the ratchet queue'du which abuts against said wall when the catch is in position to de - locking.
  • the locking system comprises a second locking pawl which cooperates with a second notch formed in the aforementioned rod upstream of the first notch relative to the heel of said rod , which notch constitutes a third ramp which acts on said second pawl to put the latter in the substantially horizontal unlocking position, in opposition to the action of a spring which normally biases said second pawl to maintain it in the locking position.
  • said third ramp is delimited on the upstream side, the closest to the outer end of the rod, by an inclined surface whose inclination is substantially the same angle relative to the horizontal. that the inclined wall which delimits the second ramp mentioned above on the upstream side and is such that it is substantially parallel to the tail of said second pawl when the latter is in the horizontal unlocking position.
  • the upstream end of the first ramp secured to the intermediate piece of the slide is bevelled at an angle substantially equal, relative to the vertical, to the inclination of the nose which forms the inner end of said first ramp, said bevel being substantially parallel to the head of said second pawl when the latter is in the locked position in the slide.
  • a return spring associated with the rod secured to the movable cursor causes, when it is compressed under the effect of a manual action exerted on a stud or analogous control integral with said spring, when said first and second pawls are in the locked position, substantially simultaneous unlocking of the two pawls by displacement of the inclined face of the second ramp provided in the vicinity of the end of the rod and of the inclined face of the third ramp, of a stroke corresponding to the compression stroke of the return spring, which inclined faces grow by moving the tails of said first and second pawls, forcing them to oscillate about their axis and to clear the beveled ends of the first ramp.
  • the compression action exerted on said return spring when the first locking pawl is in the locked position in the slide causes the unlocking of the slide by displacement ae the inclined face of the second ramp, which inclined face pushes, while moving, the tail of said first pawl, forcing it to oscillate around its axis and to disengage from the nose of the first ramp to allow voluntary closing of the slide.
  • the balls intended to facilitate the sliding of the movable cursor in the slide are mounted in movable housings in the grooves facing each other, formed respectively on the longitudinal edges of the movable slider and on the faces of the intermediate piece of the slide which are opposite said edges.
  • the present invention relates more particularly to safety locking systems for telescopic ball bearing slides, in accordance with the above provisions, as well as the means for the manufacture and assembly of such systems, the telescopic slides carrying "racks" or drawers, equipped with said locking systems and the machines on which they are mounted.
  • the slide equipped with a locking system comprises a fixed frame 1 made integral with an intermediate piece in the form of I, 2, by a pawl 3 On its face opposite to that by which it is secured to the frame 1, the intermediate piece 2 carries a movable cursor 4 capable of sliding on said face within the limits assigned to it by the locking system which is the subject of the present invention.
  • This locking system comprises a first ramp 5 fixed on the face 6 of the intermediate piece 2 on which the movable cursor 4 slides.
  • the ramp 5 is produced in the form of a flat bar fixed by any appropriate means, and in particular by riveting , on the face 6 of the intermediate piece 2, which bar extends over a length such that its inner end, which forms a nose 7 having an appropriate angle of inclination relative to the vertical, serves as a stop for a first pawl 8, while its outer end 9, which is bevelled at an angle of inclination substantially parallel to that of the nose 7, is intended to serve as a stop for a second locking pawl 10.
  • the movable cursor 4 carries on its internal face 11 facing the face 6 of the intermediate piece 2, a rod 12 which is secured to said cursor 4 by any appropriate means and in particular by bolting.
  • the notch 14-16-17 constitutes the second ramp for locking the slide.
  • the pawl 8 has at its head end a heel 19 whose general orientation is substantially perpendicular to that of the body of the pawl; the inner wall 20 of this heel, that is to say that which is on the side of the body of the pawl 8, delimits with the wall of said body to which it follows, a recess 35 whose shape and dimensions are such that when the pawl 8 is in the unlocked position in abutment on the nose 7 of the ramp 5, the wall 20 of the heel 19 of the pawl is substantially parallel to the inclined wall which forms the nose 7 of the ramp against which it s' applies in abutment, while the part 34 of the wall of the body of the pawl 8 adjoining the wall 20 of its heel 19, is substantially parallel to the axial direction of the ramp 5 against the lower edge of which it is applied in stop.
  • the pawl 8 In the locked position, the pawl 8 is pinched between on the one hand the nose 7 of the ramp 5, which fits into the corresponding recess 35 which the pawl comprises, and on the other hand the heel 22 of the rod 12 which is delimited respectively by the transverse edge 23 which forms the inner end of the rod 12 and by the cam surface 16a-16b which is part of the notch 13 formed in the rod 12, the part 16b of the surface cam being, when the pawl is in the locked position, substantially parallel to the part of the back 15 of the pawl 8 which is applied to it in this position.
  • the rod 12 has a second notch 23, not / lein its outer end, this second notch 23 to serve as a ramp to the pawl 10.
  • the notch 23, which has a bottom 24, is delimited on the side facing towards the outer end 25 of the rod 12, by an inclined edge 26 whose angle of inclination relative to the vertical, is substantially identical to that of the inclined face 17 of the notch 13.
  • the pawl 10 is associated with a spring 27 which constantly urges it to keep it in the inclined position, which is its locking position in which its head 28 abuts against the front or outer end 9 of the fixed ramp 5 fixed to the intermediate piece 2; its tail 29 then normally rests substantially in the obtuse angle formed between the bottom 24 and the edge 26 of the notch 23.
  • a spring 30 working under compression is made integral with the outer end 25 of the rod 12 by a stud (not shown) or the like, which can move, by manual actuation in a light 33 of substantially oblong shape formed in the slider mobile 4; its movement in said lumen compresses the spring 30 and therefore causes the corresponding displacement of the rod, and, consequently, the stressing of the pawls 8 and 10 by the ramps 17 of the notch 13 and 26 of the notch 23, made in the rod, for unlocking the slide, and the biasing of the pawl 8 by the cam surface 16a and 16b of the notch 13 for locking the slide.
  • the sliding cursor 4 slides in the slide takes place in the path provided for this purpose on the face 6 of the intermediate piece 2, in the vicinity of the two transverse bars 38 of the I-shaped profile which constitutes said intermediate piece.
  • this sliding is facilitated by the provision of a plurality of balls in the interval 36 which separates the longitudinal edges of the movable cursor 4 from the corresponding cross bar of the intermediate piece, which gap 36 constitutes the sliding path, however, these balls move freely in said gap 36 and sometimes prevent secure locking of the slide or cause the movable slider to jam and require the application of a significant pulling force to replace them in the correct position in the sliding paths 36 of the slide.
  • the balls are arranged in suitable housings constituted by ball rods 37, in which the balls are joined together, so that they are always in the correct position in the tracks.
  • bearing 36 and considerably facilitate the sliding of the slide, so that in the locked position of the slide, they contribute to the secure locking of the latter and in the case where the aim is to achieve full opening of the slide with final locking at the end of the opening stroke, the fully open position is obtained without jamming.
  • the transverse bars 38 of the intermediate piece 2 carry stops 39 at their ends, which stops cooperate with the ball rods 37 to limit the sliding opening of the slide when the latter is brought into the fully open position.
  • the pawl 8 In the closed position of the slide, the pawl 8 is in the "high" position, that is to say that the part of the back 15 of the pawl 8 adjoining the heel 19 of the latter is applied against the cam surface 16a of the notch 13 which receives the pawl 8, so that the latter is in position ready for locking; the pawl 10 is in a substantially horizontal position in its housing 23.
  • the servant assigned to the actuation of the drawer or "rack" mounted on the slide when it wishes to open said drawer, causes the sliding of the mobile assembly of the slide , which comprises the movable cursor 4 to which the rod 12 are fixed, the pawl 8 and the pawl 10, as well as the spring 27 with which it is associated, along the face 6 of the intermediate part 2 which remains fixed; this sliding is stopped when the heel 19 of the pawl 8 meets the ramp 5 fixed on the face 6 of the intermediate piece on which it abuts; the pawl 8 is then pinched between the heel 22 of the rod 12 and the nose 7 of the ramp 5, this securing preventing it from rotating around its axis 40.
  • the pawl 10 which is constantly stressed by the spring 27, is then released from the horizontal position in which it was in the closed slide, to turn around its axis 41 and take its "high” position in which its head 28 is in abutment against the beveled end 9 of the ramp 5, opposite to the nose 7.
  • the movable cursor 4 can no longer move either to the right, in the direction of continuing to open the drawer, by virtue of the pawl locking action 8, or to the left in the direction of closing the drawer, thanks to the locking action of the pawl 10.
  • the slide and, consequently, the drawer which it carries is securely locked without any possibility of the pawls 8 and 10 coming out of their respective housings 13 and 23 .
  • the locking system in the case where only locking in the direction of opening of the slide is desired, the locking system is simplified by removing the pawl 10 and the spring 27 associated therewith, as well as the ramp 23 which guides the movement of the pawl 10.
  • the servant wishes to unlock the slide to allow total opening, he exerts a manual push on the nipple or the like to maneuver, thus causing the compression of the spring 30; this pushes the ramp 26 of the notch 23 towards the tail 29 of the pawl 10, forcing the latter to rotate about its axis 41 and to free itself from the beveled end 9 of the ramp 5, to take up a position substantially horizontal in its housing 23; at the same time, the spring pushes the ramp 17 of the notch 13 against the tail 18 of the pawl 8, forcing the latter to rotate about its axis 4g so that its heel 19 leaves its position in abutment between the nose 7 of the ramp 5 and the heel 22 of the rod 12, to come to rest in its housing 13 with its back 15 substantially parallel to the bottom 14 of said housing.
  • the ramp 5 is thus separated from the movable cursor 4 and the elements 8-10-12 which it carries and the movable cursor 4 can then continue its opening stroke until the stops carried by the end of the intermediate piece to that where the operating pin reaches the ball rods 37; the cam surface 16a of the notch 13 in which the pawl 8 is housed then pushes the back of the latter which thereby rises to come back into abutment by its heel 19 against the nose 9 of the ramp 5.
  • the slide is again securely locked, in its new fully open position, without being able to move either in the direction of total release of the drawer, or in the direction of closing.
  • the servant wishes to unlock the slide to close the latter, he exerts a manual push on the operating pin, thus compressing the spring 30 which displaces the ramp 17 of the notch 13, which pushes the tail 18 of the pawl 8 which rotates around its axis 40 to release the ramp 5 and allow the sliding cursor 4 to slide in the direction of total closure.
  • the shapes of the pawls 8 and 10 have been given by way of nonlimiting examples and that the inclinations of the ramps 17 and 26 of the cam surface 16a are calculated as a function of the shape of the pawls 8 and 10 ; their angle of inclination can vary from the vertical between 10 and 80 ° approximately.
  • the angle of the cam surface 16b of the heel 22 of the rod 12 is calculated so that this cam surface is parallel to the corresponding part of the back 15 of the pawl 8 when the latter is in the locked position. .
  • the telescopic ball bearing slides equipped with the infallible safety lock in accordance with the present invention can be mounted on any machine or material capable of moving under conditions of precarious stability, such as ships, in particular warships, vehicles, aircraft, trains, automatic devices requiring safety interlocks; they can carry all kinds of mobile assemblies such as the racks or drawers already mentioned, or surveillance cameras placed high up and whose objectives are facing down, etc.

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  • Drawers Of Furniture (AREA)

Abstract

This locking system is characterised in that a locking catch (8), which interacts with a recess made between two locking ramps, comprises a spur (19) and interacts with a housing (13) intended to receive it. Application to telescopic ball-borne slides of the type used on machinery or equipment which is liable to move under conditions of doubtful stability. <IMAGE>

Description

La présente invention est relative à un système perfectionné de verrouillage de sécurité pour glissières télescopiques à billes, du type de celles utilisées sur des engins ou matériels susceptibles de se déplacer dans des conditions de stabilité précaire.The present invention relates to an improved safety locking system for telescopic ball bearing slides, of the type used on machines or equipment capable of moving under conditions of precarious stability.

Ces glissières portent généralement des ensembles connus sous le nom de "racks" qui sont en fait des tiroirs remplie de composants et d'appareillages électroniques et qui peuvent être manoeuvrés comme le sont habituellement les tiroirs. Il est cependant nécessaire, lorsqu'ils sont utilisés sur des engins ou matériels susceptibles de se déplacer dans des conditions de stabilité précaire, de les pourvoir d'un système de verrouillage de sécurité pour éviter leur ouverture totale accidentelle au cours d'une fausse manoeuvre ou d'une déstabilisation de l'engin sur lequel sont montés ces tiroirs, une telle ouverture ayant pour effet de précipiter hors du tiroir une charge importante susceptible de blesser les servants affectés au fonctionnement des appareillages électroniques concernés et d'endommager ces appareillages.These slides generally carry sets known as "racks" which are actually drawers filled with components and electronic equipment and which can be operated as are usually the drawers. It is however necessary, when they are used on machines or materials likely to move in conditions of precarious stability, to provide them with a safety locking system to avoid their accidental total opening during a false maneuver or of destabilization of the machine on which these drawers are mounted, such an opening having the effect of precipitating out of the drawer a large load capable of injuring the servants assigned to the operation of the electronic equipment concerned and of damaging these equipment.

C'est la raison pour laquelle il est nécessaire de pourvoir les glissières qui portent ces tiroirs, d'un système de verrouillage de sécurité qui ne permet qu'une ouverture limitée du tiroir et bloque celui-ci automatiquement lorsqu'il a atteint sa position d'ouverture limitée, de manière à éliminer le risque d'une ouverture totale accidentelle du tiroir, le déblocage étant effectué manuellement par le servant lorsque celui-ci désire, soit refermer le tiroir, soit l'ouvrir totalement volontairement. De tels systèmes de verrouillage ont été proposés dans l'Art antérieur ; ils comprennent un cliquet qui vient s'insérer dans un évidement ménagé pour le recevoir, entre deux rampes de verrouillage. Toutefois, dans la pratique, un tel système de verrouillage s'est avéré insuffisant pouf assurer un blocage efficace du tiroir sur la glissière qui le porte : en effet, dans le cas où le servant ouvre rapidement le tiroir, il arrive fréquemment que le cliquet dépasse l'évidement destiné à le recevoir, en sorte que le blocage qui devrait résulter de l'insertion du cliquet dans ledit évidement ne se produit pas et que le risque d'ouverture totale accidentelle du tiroir n'est pas éliminé.This is the reason why it is necessary to provide the slides which carry these drawers, with a safety locking system which allows only a limited opening of the drawer and blocks it automatically when it has reached its position. of limited opening, so as to eliminate the risk of an accidental total opening of the drawer, the unlocking being carried out manually by the servant when the latter wishes, either to close the drawer, or to open it completely voluntarily. Such locking systems have been proposed in the prior art; they include a pawl which is inserted into a recess made to receive it, between two locking ramps. However, in practice, such a locking system has proved to be insufficient for ensuring effective locking of the drawer on the slide which carries it: in fact, in the case where the servant opens the drawer quickly, it often happens that the pawl exceeds the recess intended to receive it, so that the blocking which should result from the insertion of the pawl into said recess does not product and the risk of accidental total opening of the drawer is not eliminated.

La présente invention a pour but de pourvoir à un système de verrouillage de sécurité pour les glissières télescopiques à billes portant de tels tiroirs, qui répond mieux aux nécessités de la pratique que les systèmes de sécurité connus dans l'Art antérieur, en ce qu'il élimine de façon absolue l'inconvénient et les risques mentionnés plus haut, notamment en ce qu'il assure un verrouillage infaillible du tiroir en position d'ouverture limitée, même en cas de manoeuvre trop rapide du tiroir ou de déstabilisation de l'engin sur lequel est monté ce dernier.The object of the present invention is to provide a safety locking system for telescopic ball bearing slides carrying such drawers, which better meets the needs of practice than the safety systems known in the prior art, in that it absolutely eliminates the disadvantage and the risks mentioned above, in particular in that it ensures an infallible locking of the drawer in the limited open position, even in the event of too rapid operation of the drawer or destabilization of the machine on which the latter is mounted.

La présente invention a pour objet un système de verrouillage de sécurité pour glissières télescopiques à billes portant un "rack" ou tiroir, ou analogue, du type comportant un cliquet de verrouillage qui coopère avec un évidement ménagé entre deux rampes de verrouillage, pour réaliser le verrouillage lorsque le rack ou analogue a atteint une position d'ouverture limitée déterminée, lequel système de verrouillage de sécurité est caractérisé en ce que ledit cliquet de verrouillage comporte un talon présentant un profil approprié et coopère avec un logement destiné à le recevoir et délimité par deux rampes de verrouillage dont l'une est solidaire de la pièce intermédiaire fixe de la glissière et présente à son extrémité voisine dudit cliquet, un profil approprié, apte à coopérer avec ce dernier et dont l'autre fait partie intégrante d'une tringle associée au curseur mobile de la glissière, ladite deuxième rampe étant prévue à l'extrémité intérieure de ladite tringle et présentant un profil approprié apte à coopérer avec le cliquet de verrouillage.The present invention relates to a safety locking system for telescopic ball bearing slides carrying a "rack" or drawer, or the like, of the type comprising a locking pawl which cooperates with a recess formed between two locking ramps, to achieve the locking when the rack or the like has reached a determined limited open position, which safety locking system is characterized in that said locking pawl has a heel having an appropriate profile and cooperates with a housing intended to receive it and delimited by two locking ramps, one of which is integral with the fixed intermediate piece of the slide and has, at its end near said pawl, an appropriate profile, capable of cooperating with the latter and the other of which is an integral part of an associated rod to the movable slider of the slide, said second ramp being provided at the inner end of said rod and having a prof it suitable able to cooperate with the locking pawl.

Selon un mode de réalisation avantageux du système de verrouillage conforme à la présente invention, l'extrémité de la première rampe qui est voisine du cliquet de verrouillage présente la forme d'un nez contre lequel le talon dudit cliquet vient en butée, lorsque ledit cliquet est dans sa position de verrouillage.According to an advantageous embodiment of the locking system according to the present invention, the end of the first ramp which is adjacent to the locking pawl has the shape of a nose against which the heel of said pawl abuts when said pawl is in its locked position.

Selon un autre mode de réalisation avantageux du système de verrouillage conforme à la présente invention, la tringle susdite comporte à son extrémité intérieure un talon dont le profil intérieur constitue une surface de came sur laquelle le dos dudit cliquet se déplace pour prendre sa position de verrouillage, la partie supérieure de ladite surface de came étant telle qu'elle est sen4blezent parallèle au dos du cliquet lorsque ce dernier est en position de verrouillage.According to another advantageous embodiment of the locking system according to the present invention, the above-mentioned rod has at its inner end a heel, the inner profile of which constitutes a cam surface on which the back of said pawl moves to assume its locking position , the upper part of said cam surface being such that it is sen4blezent parallel to the back of the pawl when the latter is in the locking position.

Selon encore un autre mode de réalisation avantageux du système de verrouillage conforme à la présente invention, ladite tringle comporte au voisinage de son talon, une échancrure délimitée du côté talon par ladite surface de came et, du côté opposé, par une paroi inclinée qui est telle qu'elle est sensiblement parallèle à-la queue'du cliquet qui vient en butée contre cette paroi lorsque le cliquet se trouve en position de dé- verrouillage.According to yet another advantageous embodiment of the locking system according to the present invention, said rod comprises in the vicinity of its heel, a notch delimited on the heel side by said cam surface and, on the opposite side, by an inclined wall which is such that it is substantially parallel to the ratchet queue'du which abuts against said wall when the catch is in position to de - locking.

Selon un autre mode de réalisation avantageux du système de verrouillage conforme à la présente invention, celui-ci comporte un deuxième cliquet de verrouillage qui coopère avec une deuxième échancrure pratiquée dans la tringle susdite en amont de la première échancrure par rapport au talon de ladite tringle, laquelle échancrure constitue une troisième rampe qui agit sur ledit deuxième cliquet pour mettre celui-ci en position sensiblement horizontale de déverrouillage, en antagonisme à l'action d'un ressort qui sollicite normalement ledit deuxième cliquet pour le maintenir en position de verrouillage.According to another advantageous embodiment of the locking system according to the present invention, it comprises a second locking pawl which cooperates with a second notch formed in the aforementioned rod upstream of the first notch relative to the heel of said rod , which notch constitutes a third ramp which acts on said second pawl to put the latter in the substantially horizontal unlocking position, in opposition to the action of a spring which normally biases said second pawl to maintain it in the locking position.

Selon une disposition avantageuse de ce mode de réalisation, ladite troisième rampe est délimitée du côté amont, le plus voisin de l'extrémité extérieure de la tringle, par une surface inclinée dont l'inclinaison est sensiblement de même angle par rapport à l'horizontale que la paroi inclinée qui délimite la deuxième rampe susdite côté amont et est telle qu'elle est sensiblement parallèle à la queue dudit deuxième cliquet lorsque ce dernier est en position horizontale de déverrouillage.According to an advantageous arrangement of this embodiment, said third ramp is delimited on the upstream side, the closest to the outer end of the rod, by an inclined surface whose inclination is substantially the same angle relative to the horizontal. that the inclined wall which delimits the second ramp mentioned above on the upstream side and is such that it is substantially parallel to the tail of said second pawl when the latter is in the horizontal unlocking position.

Selon un mode de réalisation avantageux du système de verrouillage conforme à la présente invention, l'extrémité amont de la première rampe solidaire de la pièce intermédiaire de la glissière, est biseautée suivant un angle sensiblement égal, par rapport à la verticale, à l'inclinaison du nez qui forme l'extrémité intérieure de ladite première rampe, ledit biseau étant sensiblement parallèle à la tête dudit deuxième cliquet lorsque ce dernier est en position de verrouillage dans la glissière.According to an advantageous embodiment of the locking system according to the present invention, the upstream end of the first ramp secured to the intermediate piece of the slide, is bevelled at an angle substantially equal, relative to the vertical, to the inclination of the nose which forms the inner end of said first ramp, said bevel being substantially parallel to the head of said second pawl when the latter is in the locked position in the slide.

Selon un autre mode de réalisation avantageux du système de verrouillage conforme à l'invention, un ressort de rappel associé à la tringle solidaire du curseur mobile provoque, lorsqu'il est comprimé sous l'effet d'une action manuelle exercée sur un téton ou analogue de commande solidaire dudit ressort, lorsque lesdits premier et deuxième cliquets se trouvent en position de verrouillage, le déverrouillage sensiblement simultané des deux cliquets par déplacement de la face inclinée de la deuxième rampe prévue au voisinage de l'extrémité de la tringle et de la face inclinée de la troisième rampe, d'une course correspondant à la course de compression du ressort de rappel, lesquelles faces inclinées poussent en se déplaçant les queues desdits premier et deuxième cliquets, contraignant ceux-ci à osciller autour de leur axe et à se dégager des extrémités biseautées de la première rampe.According to another advantageous embodiment of the locking system according to the invention, a return spring associated with the rod secured to the movable cursor causes, when it is compressed under the effect of a manual action exerted on a stud or analogous control integral with said spring, when said first and second pawls are in the locked position, substantially simultaneous unlocking of the two pawls by displacement of the inclined face of the second ramp provided in the vicinity of the end of the rod and of the inclined face of the third ramp, of a stroke corresponding to the compression stroke of the return spring, which inclined faces grow by moving the tails of said first and second pawls, forcing them to oscillate about their axis and to clear the beveled ends of the first ramp.

Selon encore un autre mode de réalisation avantageux du système de verrouillage conforme à l'invention, l'action de compression exercée sur ledit ressort de rappel lorsque le premier cliquet de verrouillage se trouve en position de blocage dans la glissière, provoque le déverrouillage de la glissière par déplacement ae la face inclinée de la deuxième rampe, laquelle face inclinée pousse, en se déplaçant, la queue dudit premier cliquet, contraignant celui-ci à osciller autour de son axe et à se dégager du nez de la première rampe pour permettre la fermeture volontaire de la glissière.According to yet another advantageous embodiment of the locking system according to the invention, the compression action exerted on said return spring when the first locking pawl is in the locked position in the slide, causes the unlocking of the slide by displacement ae the inclined face of the second ramp, which inclined face pushes, while moving, the tail of said first pawl, forcing it to oscillate around its axis and to disengage from the nose of the first ramp to allow voluntary closing of the slide.

Selon un mode de réalisation avantageux du système de verrouillage conforme à la présente invention, les billes destinées à faciliter le coulissement du curseur mobile dans la glissière sont montées dans des logements mobiles dans les gorges en regard l'une de l'autre, ménagées respectivement sur les tranches longitudinales du curseur mobile et sur les faces de la pièce intermédiaire de la glissière qui sont en regard desdites tranches.According to an advantageous embodiment of the locking system according to the present invention, the balls intended to facilitate the sliding of the movable cursor in the slide are mounted in movable housings in the grooves facing each other, formed respectively on the longitudinal edges of the movable slider and on the faces of the intermediate piece of the slide which are opposite said edges.

La présente invention vise plus particulièrement les systèmes de verrouillage de sécurité pour glissières télescopiques à billes, conformes aux dispositions qui précèdent, ainsi que les moyens pour la fabrication et l'assemblage de tels systèmes, les glissières télescopiques portant des "racks" ou tiroirs, équipées desdits systèmes de verrouillage et les engins sur lesquels elles sont montées.The present invention relates more particularly to safety locking systems for telescopic ball bearing slides, in accordance with the above provisions, as well as the means for the manufacture and assembly of such systems, the telescopic slides carrying "racks" or drawers, equipped with said locking systems and the machines on which they are mounted.

Outre les dispositions qui précèdent, l'invention comprend encore d'autres dispositions qui ressortiront de la description qui va suivre.In addition to the foregoing arrangements, the invention also comprises other arrangements which will emerge from the description which follows.

L'invention sera mieux comprise à l'aide du complément de description qui va suivre, qui se réfère aux dessins annexés dans lesquels :

  • - la figure 1 est une vue de dessus d'une glissière télescopique à billes équipée d'un système de verrouillage de sécurité conforme à l'invention, partiellement ouverte (sur 120mm) et verrouillée dans cette position ;
  • - la figure 2 est une vue latérale de la glissière de la figure 1 ;
  • - la figure 3 est une vue en coupe transversale de la glissière télescopique à billes de la figure 1 ;
  • - la figure 4 est une vue de dessus d'un système de verrouillage conforme à l'invention lorsque la glissière est fermée ;
  • - la figure 5 est une vue de dessus du système de verrouillage de la figure 4 en position de blocage de la glissière en position partiellement ouverte sur 120 mm ;
  • - la figure 6 est une vue de dessus du même système de verrouillage en position de déverrouillage, et
  • - la figure 7 est une vue de dessus du système de verrouillage en position d'ouverture totale.
The invention will be better understood with the aid of the additional description which follows, which refers to the appended drawings in which:
  • - Figure 1 is a top view of a telescopic ball slide equipped with a safety locking system according to the invention, partially open (over 120mm) and locked in this position;
  • - Figure 2 is a side view of the slide of Figure 1;
  • - Figure 3 is a cross-sectional view of the telescopic ball slide of Figure 1;
  • - Figure 4 is a top view of a locking system according to the invention when the slide is closed;
  • - Figure 5 is a top view of the locking system of Figure 4 in the locking position of the slide in the partially open position over 120 mm;
  • FIG. 6 is a top view of the same locking system in the unlocking position, and
  • - Figure 7 is a top view of the locking system in the fully open position.

Il doit être bien entendu, toutefois, que ces dessins et les parties descriptives correspondantes, sont donnés uniquement à titre d'illustration de l'objet de l'invention, dont ils ne constituent en aucune manière une limitation.It should be understood, however, that these drawings and the corresponding descriptive parts, are given solely by way of illustration of the subject of the invention, of which they do not in any way constitute a limitation.

La glissière équipée d'un système de verrouillage conforme à l'invention, représentée à titre d'exemple non limitatif aux dessins, comprend un bâti fixe 1 rendu solidaire d'une pièce intermédiaire en forme d'I, 2, par un cliquet 3. Sur sa face opposée à celle par laquelle elle est solidarisée au bâti 1, la pièce intermédiaire 2 porte un curseur mobile 4 susceptible de coulisser sur ladite face dans les limites qui lui sont assignées par le système de verrouillage qui fait l'objet de la présente invention.The slide equipped with a locking system according to the invention, shown by way of nonlimiting example in the drawings, comprises a fixed frame 1 made integral with an intermediate piece in the form of I, 2, by a pawl 3 On its face opposite to that by which it is secured to the frame 1, the intermediate piece 2 carries a movable cursor 4 capable of sliding on said face within the limits assigned to it by the locking system which is the subject of the present invention.

Ce système de verrouillage comprend une première rampe 5 fixée sur la face 6 de la pièce intermédiaire 2 sur laquelle coulisse le curseur mobile 4, La rampe 5 est réalisée sous la forme d'une barre plate fixée par tous moyens appropriés, et notamment par rivetage, sur la face 6 de la pièce intermédiaire 2, laquelle barre s'étend sur une longueur telle que son extrémité intérieure, qui forme un nez 7 présentant un angle d'inclinaison appropriée par rapport à la verticale, sert de butée à un premier cliquet de verrouillage 8, tandis que son extrémité extérieure 9, qui est biseautée suivant un angle d'inclinaison sensiblement parallèle à celui du nez 7, est destinée à servir de butée à un deuxième cliquet de verrouillage 10.This locking system comprises a first ramp 5 fixed on the face 6 of the intermediate piece 2 on which the movable cursor 4 slides. The ramp 5 is produced in the form of a flat bar fixed by any appropriate means, and in particular by riveting , on the face 6 of the intermediate piece 2, which bar extends over a length such that its inner end, which forms a nose 7 having an appropriate angle of inclination relative to the vertical, serves as a stop for a first pawl 8, while its outer end 9, which is bevelled at an angle of inclination substantially parallel to that of the nose 7, is intended to serve as a stop for a second locking pawl 10.

Le curseur mobile 4 porte sur sa face interne 11 tournée vers la face 6 de la pièce intermédiaire 2,une tringle 12 qui est solidarisée avec ledit curseur 4 par tous moyens appropriés et notamment par boulonnage. Cette tringle 12, qui se déplace avec le curseur 4 du fait de sa solidarisation avec ce dernier, comporte non loin de son extrémité intérieure, une échancrure 13 dont la forme et les dimensions sont calculées de manière à servir de logement et de surface de came au cliquet 8 ; en particulier, le fond 14 de ladite échancrure 13 a une longueur qui correspond sensiblement à la longueur du dos 15 du cliquet 8 et il est limité du côté de l'extrémité intérieure 23 de la tringle 12, par une face 16 présentant deux orientations successives 16a-16b qui forment une surface, de came le long de laquelle se déplace la partie correspon- dante du dos 15 du cliquet 8 lorsque celui-ci est sollicité pour prendre sa position de verrouillage de la glissière ; le fond 14 de l'échancrure 13 est limité du côté opposé, par une face inclinée 17 présentant un angle d'inclinaison par rapport à la verticale, conçu pour servir de surface de came à la queue 18 du cliquet 8 lorsque celui-ci est sollicité pour prendre sa position de déverrouillage de la glissière. L'échancrure 14-16-17 constitue la deuxième rampe de verrouillage de la glissière. Le cliquet 8 comporte à son extrémité de tête un talon 19 dont l'orientation générale est sensiblement perpendiculaire à celle du corps du cliquet ; la paroi intérieure 20 de ce talon, c'est-à-dire celle qui se trouve du côté du corps du cliquet 8, délimite avec la paroi dudit corps à laquelle elle fait suite, un évidement 35 dont la forme et les dimensions sont telles que lorsque le cliquet 8 se trouve en position de déverrrouillage en butée sur le nez 7 de la rampe 5, la paroi 20 du talon 19 du cliquet est sensiblement parallèle à la paroi inclinée qui forme le nez 7 de la rampe contre laquelle elle s'applique en butée , tandis que la partie 34 de la paroi du corps du cliquet 8 attenante à la paroi 20 de son talon 19, est sensiblement parallèle à la direction axiale de la rampe 5 contre l'arête inférieure de laquelle elle vient s'appliquer en butée. En position de verrouillage, le cliquet 8 est pincé entre d'une part le nez 7 de la rampe 5, qui vient s'adapter dans l'évidement 35 correspondant que comporte le cliquet, et d'autre part le talon 22 de la tringle 12 qui est délimité respectivement par l'arête transversale 23 qui forme l'extrémité intérieure de la tringle 12 et par la surface de came 16a-16b qui fait partie de l'échancrure 13 pratiquée dans la tringle 12, la partie 16b de la surface de came étant, lorsque le cliquet se trouve en position de verrouillage, sensiblement parallèle à la partie du dos 15 du cliquet 8 qui s'applique sur elle dans cette position.The movable cursor 4 carries on its internal face 11 facing the face 6 of the intermediate piece 2, a rod 12 which is secured to said cursor 4 by any appropriate means and in particular by bolting. This rod 12, which moves with the cursor 4 due to its connection with the latter, includes not far from its inner end, a notch 13 whose shape and dimensions are calculated so as to serve as housing and cam surface pawl 8; in particular, the bottom 14 of said notch 13 has a length which corresponds substantially to the length of the back 15 of the pawl 8 and it is limited on the side of the inner end 23 of the rod 12, by a face 16 having two successive orientations 16a-16b which form a cam surface along which the part moves corre - dante back 15 of the pawl 8 when the latter is biased to take his of the slide locking position; the bottom 14 of the notch 13 is limited on the opposite side, by an inclined face 17 having an angle of inclination relative to the vertical, designed to serve as a cam surface for the shank 18 of the pawl 8 when it is requested to take up its position for unlocking the slide. The notch 14-16-17 constitutes the second ramp for locking the slide. The pawl 8 has at its head end a heel 19 whose general orientation is substantially perpendicular to that of the body of the pawl; the inner wall 20 of this heel, that is to say that which is on the side of the body of the pawl 8, delimits with the wall of said body to which it follows, a recess 35 whose shape and dimensions are such that when the pawl 8 is in the unlocked position in abutment on the nose 7 of the ramp 5, the wall 20 of the heel 19 of the pawl is substantially parallel to the inclined wall which forms the nose 7 of the ramp against which it s' applies in abutment, while the part 34 of the wall of the body of the pawl 8 adjoining the wall 20 of its heel 19, is substantially parallel to the axial direction of the ramp 5 against the lower edge of which it is applied in stop. In the locked position, the pawl 8 is pinched between on the one hand the nose 7 of the ramp 5, which fits into the corresponding recess 35 which the pawl comprises, and on the other hand the heel 22 of the rod 12 which is delimited respectively by the transverse edge 23 which forms the inner end of the rod 12 and by the cam surface 16a-16b which is part of the notch 13 formed in the rod 12, the part 16b of the surface cam being, when the pawl is in the locked position, substantially parallel to the part of the back 15 of the pawl 8 which is applied to it in this position.

La tringle 12 comporte une deuxième échancrure 23, non /lein de son extrémité extérieure, cette deuxième échancrure 23 devant servir de rampe au cliquet 10. L'échancrure 23, qui comporte un fond 24, est délimité du côté orienté vers l'extrémité extérieure 25 de la tringle 12, par une arête 26 inclinée dont l'angle d'inclinaison par rapport à la verticale, est sensiblement identique à celui de la face inclinée 17 de l'échancrure 13. Le cliquet 10 est associé à un ressort 27 qui le sollicite de manière constante pour le maintenir en position inclinée, qui est sa position de verrouillage dans laquelle sa tête 28 vient en butée contre l'extrémité antérieure, ou extérieure 9 de la rampe fixe 5 fixée à la pièce intermédiaire 2 ; sa queue 29 repose alors normalement en butée sensiblement dans l'angle obtus formé entre le fond 24 et l'arête 26 de l'échancrure 23.The rod 12 has a second notch 23, not / lein its outer end, this second notch 23 to serve as a ramp to the pawl 10. The notch 23, which has a bottom 24, is delimited on the side facing towards the outer end 25 of the rod 12, by an inclined edge 26 whose angle of inclination relative to the vertical, is substantially identical to that of the inclined face 17 of the notch 13. The pawl 10 is associated with a spring 27 which constantly urges it to keep it in the inclined position, which is its locking position in which its head 28 abuts against the front or outer end 9 of the fixed ramp 5 fixed to the intermediate piece 2; its tail 29 then normally rests substantially in the obtuse angle formed between the bottom 24 and the edge 26 of the notch 23.

Un ressort 30 travaillant à la compression est rendu solidaire de l'extrémité extérieure 25 de la tringle 12 par un téton (non représenté) ou analogue, qui peut se déplacer, par actionnment manuel dans une lumière 33 de forme sensiblement oblongue ménagée dans le curseur mobile 4 ; son déplacement dans ladite lumière comprime le ressort 30 et provoque, de ce fait, le déplacement correspondant de la tringle, et, par suite, la sollicitation des cliquets 8 et 10 par les rampes 17 de l'échancrure 13 et 26 de l'échancrure 23, pratiquées dans la tringle, pour le déverrouillage de la glissière, et la sollicitation du cliquet 8 par la surface de came 16a et 16b de l'échancrure 13 pour le verrouillage de la glissière.A spring 30 working under compression is made integral with the outer end 25 of the rod 12 by a stud (not shown) or the like, which can move, by manual actuation in a light 33 of substantially oblong shape formed in the slider mobile 4; its movement in said lumen compresses the spring 30 and therefore causes the corresponding displacement of the rod, and, consequently, the stressing of the pawls 8 and 10 by the ramps 17 of the notch 13 and 26 of the notch 23, made in the rod, for unlocking the slide, and the biasing of the pawl 8 by the cam surface 16a and 16b of the notch 13 for locking the slide.

Le coulissement du curseur mobile 4 dans la glissière a lieu dans la voie ménagée à cet effet sur la face 6 de la pièce intermédiaire 2, au voisinage des deux barres transversales 38 du profilé en forme d'I qui constitue ladite pièce intermédiaire. Conformément à l'Art antérieur, ce coulissement est facilité par la disposition d'une pluralité de billes dans l'intervalle 36 qui sépare les arêtes longitudinales du curseur mobile 4 de la barre transversale correspondante de la pièce intermédiaire, lequel intervalle 36 constitue le chemin de coulissement toutefois, ces billes se déplacent librement dans ledit intervalle 36 et empêchent parfois un verrouillage sûr de la glissière ou provoquent le coincement du curseur mobile et nécessitent l'application d'une force de tractïon importante pour les replacer en position correcte dans les chemins de coulissement 36 de la glissière. De ce fait, conformément à la présente invention, les billes sont disposées dans des logements appropriés constitués par des tringles à billes 37, dans lesquelles les billes sont solidarisées entre elles, en sorte qu'elles se trouvent toujours en position correcte dans les chemins de roulement 36 et facilitent considérablement le coulissement de la glissière, en sorte qu'en position de verrouillage de la glissière, elles contribuent au verrouillage sûr de cette dernière et dans le cas où l'on vise à réaliser l'ouverture totale de la glissière avec verrouillage final en fin de course d'ouverture, la position d'ouverture totale est obtenue sans coincement.The sliding cursor 4 slides in the slide takes place in the path provided for this purpose on the face 6 of the intermediate piece 2, in the vicinity of the two transverse bars 38 of the I-shaped profile which constitutes said intermediate piece. In accordance with the prior art, this sliding is facilitated by the provision of a plurality of balls in the interval 36 which separates the longitudinal edges of the movable cursor 4 from the corresponding cross bar of the intermediate piece, which gap 36 constitutes the sliding path, however, these balls move freely in said gap 36 and sometimes prevent secure locking of the slide or cause the movable slider to jam and require the application of a significant pulling force to replace them in the correct position in the sliding paths 36 of the slide. Therefore, in accordance with the present invention, the balls are arranged in suitable housings constituted by ball rods 37, in which the balls are joined together, so that they are always in the correct position in the tracks. bearing 36 and considerably facilitate the sliding of the slide, so that in the locked position of the slide, they contribute to the secure locking of the latter and in the case where the aim is to achieve full opening of the slide with final locking at the end of the opening stroke, the fully open position is obtained without jamming.

Les barres transversales 38 de la pièce intermédiaire 2 portent des butées 39 à leurs extrémités, lesquelles butées coopèrent avec les tringles à billes 37 pour limiter le coulissement d'ouverture de la glissière lorsque celle-ci est amenée en position d'ouverture totale.The transverse bars 38 of the intermediate piece 2 carry stops 39 at their ends, which stops cooperate with the ball rods 37 to limit the sliding opening of the slide when the latter is brought into the fully open position.

Le fonctionnement du dispositif de verrouillage con- ' forme à l'invention est le suivant :

  • Lors du processus d'ouverture de la glissière, le bâti fixe 1 et la pièce intermédiaire 2 sont solidarisés entre eux par le cliquet 3. La pièce intermédiaire 2 et le curseur mobile 4 ne sont pas verrouillés l'un à l'autre, en sorte que le curseur mobile 4 peut commencer sa course. Toutefois, cette course est arrêtée au bout de quelques centimètres, 12 cm par exemple , par le système de verrouillage conformé à l'invention, ce verrouillage ayant lieu automatiquement dans les conditions suivantes:
The operation of the locking device con- 'shape with the invention is as follows:
  • During the process of opening the slide, the fixed frame 1 and the intermediate piece 2 are joined together by the pawl 3. The intermediate piece 2 and the movable slider 4 are not locked to each other, in so that the moving cursor 4 can start its run. However, this race is stopped after a few centimeters, 12 cm for example, by the locking system according to the invention, this locking taking place automatically under the following conditions:

En position de fermeture de la glissière, le cliquet 8 est en position "haute", c'est-à-dire que la partie du dos 15 du cliquet 8 attenante au talon 19 de ce dernier est appliquée contre la surface de came 16a de l'échancrure 13 qui reçoit le cliquet 8, en sorte que ce dernier est en position prête au verrouillage ; le cliquet 10 est en position sensiblement horizontale dans son logement 23. Le servant affecté à l'actionnement du tiroir ou "rack" monté sur la glissière, lorsqu'il désire ouvrir ledit tiroir, provoque le coulissement de l'ensemble mobile de la glissière, lequel comprend le curseur mobile 4 auquel sont fixés la tringle 12, le cliquet 8 et le cliquet 10, ainsi que le ressort 27 auquel il est associé, le long de la face 6 de la pièce intermédiaire 2 qui demeure fixe ; ce coulissement est stoppé lorsque le talon 19 du cliquet 8 rencontre la rampe 5 fixée sur la face 6 de la pièce intermédiaire sur laquelle il vient buter ; le cliquet 8 est alors pincé entre le talon 22 de la tringle 12 et le nez 7 de la rampe 5, cet assujettissement l'empêchant de tourner autour de son axe 40. Le cliquet 10 qui est constamment sollicité par le ressort 27, est alors libéré de la position horizontale dans laquelle il se trouvait dans la glissière fermée, pour tourner autour de son axe 41 et prendre sa position "haute" dans laquelle sa tête 28 est en butée contre l'extrémité biseautée 9 de la rampe 5, opposée au nez 7.In the closed position of the slide, the pawl 8 is in the "high" position, that is to say that the part of the back 15 of the pawl 8 adjoining the heel 19 of the latter is applied against the cam surface 16a of the notch 13 which receives the pawl 8, so that the latter is in position ready for locking; the pawl 10 is in a substantially horizontal position in its housing 23. The servant assigned to the actuation of the drawer or "rack" mounted on the slide, when it wishes to open said drawer, causes the sliding of the mobile assembly of the slide , which comprises the movable cursor 4 to which the rod 12 are fixed, the pawl 8 and the pawl 10, as well as the spring 27 with which it is associated, along the face 6 of the intermediate part 2 which remains fixed; this sliding is stopped when the heel 19 of the pawl 8 meets the ramp 5 fixed on the face 6 of the intermediate piece on which it abuts; the pawl 8 is then pinched between the heel 22 of the rod 12 and the nose 7 of the ramp 5, this securing preventing it from rotating around its axis 40. The pawl 10 which is constantly stressed by the spring 27, is then released from the horizontal position in which it was in the closed slide, to turn around its axis 41 and take its "high" position in which its head 28 is in abutment against the beveled end 9 of the ramp 5, opposite to the nose 7.

Dans cette position, le curseur mobile 4 ne peut plus se déplacer ni vers la droite, dans le sens de la poursuite de l'ouverture du tiroir, grâce à l'action de verrouillage du cliquet 8, ni vers la gauche dans le sens de la fermeture du tiroir, grâce à l'action de verrouillage du cliquet 10. La glissière et, partant, le tiroir qu'elle porte se trouve solidement verrouillée sans aucune possibilité de sortie des cliquets 8 et 10 hors de leurs logements respectifs 13 et 23.In this position, the movable cursor 4 can no longer move either to the right, in the direction of continuing to open the drawer, by virtue of the pawl locking action 8, or to the left in the direction of closing the drawer, thanks to the locking action of the pawl 10. The slide and, consequently, the drawer which it carries is securely locked without any possibility of the pawls 8 and 10 coming out of their respective housings 13 and 23 .

Selon une variante de réalisation du système de verrouillage conforme à l'invention, dans le cas où seul un verrouillage dans le sens de l'ouverture de la glissière est souhaité, le système de verrouillage est simplifié par la suppression du cliquet 10 et du ressort 27 qui lui est associé, ainsi que de la rampe 23 qui guide le déplacement du cliquet 10.According to an alternative embodiment of the locking system according to the invention, in the case where only locking in the direction of opening of the slide is desired, the locking system is simplified by removing the pawl 10 and the spring 27 associated therewith, as well as the ramp 23 which guides the movement of the pawl 10.

Si le servant désire déverrouiller la glissière pour permettre une ouverture totale, il exerce une poussée manuelle sur le téton ou analogue de manoeuvre, provoquant ainsi la compression du ressort 30 ; celui-ci pousse la rampe 26 de l'échancrure 23 vers la queue 29 du cliquet 10, obligeant ce dernier à tourner autour de son axe 41 et à se libérer de l'extrémité biseautée 9 de la rampe 5, pour prendre une position sensiblement horizontale dans son logement 23 ; en même temps, le ressort pousse la rampe 17 de l'échancrure 13 contre la queue 18 du cliquet 8, obligeant ce dernier à tourner autour de son axe 4g en sorte que son talon 19 quitte sa position en butée entre le nez 7 de la rampe 5 et le talon 22 de la tringle 12, pour venir reposer dans son logement 13 avec son dos 15 sensiblement parallèle au fond 14 dudit logement. La rampe 5 se trouve ainsi désolidarisée du curseur mobile 4 et des éléments 8-10-12 qu'il porte et le curseur mobile 4 peut alors poursuivre sa course d'ouverture jusqu'à ce que les butées portées par l'extrémité de la pièce intermédiaire à celle où se trouve le téton de manoeuvre atteignent les tringles à billes 37 ; la surface de came 16a de l'échancrure 13 dans laquelle est logé le cliquet 8 pousse alors le dos de ce dernier qui remonte de ce fait pour se remettre en butée par son talon 19 contre le nez 9 de la rampe 5. La glissière est à nouveau solidement verrouillée, dans sa nouvelle position d'ouverture totale, sans pouvoir se déplacer ni dans le sens d'un dégagement total du tiroir, ni dans le sens de la fermeture.If the servant wishes to unlock the slide to allow total opening, he exerts a manual push on the nipple or the like to maneuver, thus causing the compression of the spring 30; this pushes the ramp 26 of the notch 23 towards the tail 29 of the pawl 10, forcing the latter to rotate about its axis 41 and to free itself from the beveled end 9 of the ramp 5, to take up a position substantially horizontal in its housing 23; at the same time, the spring pushes the ramp 17 of the notch 13 against the tail 18 of the pawl 8, forcing the latter to rotate about its axis 4g so that its heel 19 leaves its position in abutment between the nose 7 of the ramp 5 and the heel 22 of the rod 12, to come to rest in its housing 13 with its back 15 substantially parallel to the bottom 14 of said housing. The ramp 5 is thus separated from the movable cursor 4 and the elements 8-10-12 which it carries and the movable cursor 4 can then continue its opening stroke until the stops carried by the end of the intermediate piece to that where the operating pin reaches the ball rods 37; the cam surface 16a of the notch 13 in which the pawl 8 is housed then pushes the back of the latter which thereby rises to come back into abutment by its heel 19 against the nose 9 of the ramp 5. The slide is again securely locked, in its new fully open position, without being able to move either in the direction of total release of the drawer, or in the direction of closing.

Si par contre, le servant désire déverrouiller la glissière pour refermer cette dernière, il exerce une poussée manuelle sur le téton de manoeuvre, comprimant ainsi le ressort 30 qui déplace la rampe 17 de l'échancrure 13, qui pousse la queue 18 du cliquet 8 qui tourne autour de son axe 40 pour libérer la rampe 5 et permettre le coulissement du curseur mobile 4 dans le sens de la fermeture totale.If on the other hand, the servant wishes to unlock the slide to close the latter, he exerts a manual push on the operating pin, thus compressing the spring 30 which displaces the ramp 17 of the notch 13, which pushes the tail 18 of the pawl 8 which rotates around its axis 40 to release the ramp 5 and allow the sliding cursor 4 to slide in the direction of total closure.

L'on comprendra aisément que les formes des cliquets 8 et 10 ont été données à titre d'exemples non limitatifs et que les inclinaisons des rampes 17 et 26 de la surface de came 16a sont calculées en fonction de la forme des cliquets 8 et 10 ; leur angle d'inclinaison peut varier par rapport à la verticale entre 10 et 80° environ. De même, l'angle de la surface de came 16b du talon 22 de la tringle 12 est calculé de telle manière que cette surface de came soit parallèle à la partie correspondante du dos 15 du cliquet 8 lorsque ce dernier se trouve en position de verrouillage.It will be easily understood that the shapes of the pawls 8 and 10 have been given by way of nonlimiting examples and that the inclinations of the ramps 17 and 26 of the cam surface 16a are calculated as a function of the shape of the pawls 8 and 10 ; their angle of inclination can vary from the vertical between 10 and 80 ° approximately. Similarly, the angle of the cam surface 16b of the heel 22 of the rod 12 is calculated so that this cam surface is parallel to the corresponding part of the back 15 of the pawl 8 when the latter is in the locked position. .

Les glissières télescopiques à billes équipées du verrouillage de sécurité infaillible conforme à la présente invention, peuvent être montées sur tous engins ou matériels susceptibles de se déplacer dans des conditions de stabilité précaire, tels que navires, en particulier navires de guerre, véhicules, aéronefs, trains, appareillages automatiques nécessitant des verrouillages de sécurité ; elles peuvent porter toutes sortes d'ensembles mobiles tels que les racks ou tiroirs déjà mentionnés, ou encore des caméras de surveillance placées en hauteur et dont les objectifs sont tournés vers le bas, etc.The telescopic ball bearing slides equipped with the infallible safety lock in accordance with the present invention can be mounted on any machine or material capable of moving under conditions of precarious stability, such as ships, in particular warships, vehicles, aircraft, trains, automatic devices requiring safety interlocks; they can carry all kinds of mobile assemblies such as the racks or drawers already mentioned, or surveillance cameras placed high up and whose objectives are facing down, etc.

Claims (10)

1. Système de verrouillage de sécurité pour glissières télescopiques à billes portant un "rack" ou tiroir, ou analogue, du type comportant un cliquet de verrouillage qui coopère avec un évidement ménagé entre deux rampes de verrouillage, pour réaliser le verrouillage lorsque le rack ou analogue a atteint une position d'ouverture limitée déterminée, lequel système de verrouillage de sécurité est caractérisé en ce que ledit cliquet de verrouillage (8) comporte un talon (19) présentant un profil approprié et coopère avec un logement (13) destiné à le recevoir et délimité par deux rampes de verrouillage dont l'une (5) est solidaire de la pièce intermédiaire fixe (2) de la glissière et présente à son extrémité voisine dudit cliquet, un profil approprié, apte à coopérer avec ce dernier et dont l'autre (13) fait partie intégrante d'une tringle (12) associée au curseur mobile (4) de la glissière, ladite deuxième rampe (13) étant prévue à l'extrémité intérieure de ladite tringle (12) et présentant un profil approprié apte à coopérer avec le cliquet de verrouillage (8).1. Safety locking system for telescopic ball bearing slides carrying a "rack" or drawer, or the like, of the type comprising a locking pawl which cooperates with a recess formed between two locking ramps, for locking when the rack or similar has reached a determined limited open position, which safety locking system is characterized in that said locking pawl (8) comprises a heel (19) having an appropriate profile and cooperates with a housing (13) intended for the receive and delimited by two locking ramps, one of which (5) is integral with the fixed intermediate part (2) of the slide and has at its end near said pawl, an appropriate profile, capable of cooperating with the latter and of which the 'other (13) is an integral part of a rod (12) associated with the movable cursor (4) of the slide, said second ramp (13) being provided at the inner end of said rod (12) and present ant an appropriate profile able to cooperate with the locking pawl (8). 2. Système de verrouillage de sécurité selon la revendication 1, caractérisé en ce que l'extrémité de la première rampe (5) qui est voisine du cliquet de verrouillage (8) présente la forme d'un nez (7) contre lequel le talon (19) dudit cliquet (8) vient en butée, lorsque ledit cliquet est dans sa position de verrouillage.2. Safety locking system according to claim 1, characterized in that the end of the first ramp (5) which is close to the locking pawl (8) has the shape of a nose (7) against which the heel (19) of said pawl (8) abuts when said pawl is in its locking position. 3. Système de verrouillage de sécurité selon l'une quelconque des revendications 1 et 2, caractérisé en ce que la tringle susdite (12) comporte à son extrémité intérieure un talon (22) dont le profil intérieur constitue une surface de came (16) sur laquelle le dos (15) dudit cliquet (8) se déplace pour prendre sa position de verrouillage, la partie supérieure (16b) de ladite surface de came étant telle qu'elle est sensiblement parallèle au dos (15) du cliquet (8) lorsque ce dernier est en position de verrouillage.3. Safety locking system according to any one of claims 1 and 2, characterized in that the said rod (12) has at its inner end a heel (22) whose inner profile constitutes a cam surface (16) on which the back (15) of said pawl (8) moves to take its locking position, the upper part (16b) of said cam surface being such that it is substantially parallel to the back (15) of the pawl (8) when the latter is in the locked position. 4. Système de verrouillage de sécurité selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ladite tringle (12) comporte au voisinage de son talon (22) une échancrure (13) délimitée du côté talon par ladite surface de came (16) et du côté opposé par une paroi inclinée (17) qui est telle qu'elle est sensiblement parallèle à la queue (18) du cliquet (8) qui vient en butée contre cette paroi (17) lorsque le cliquet (8) se trouve en position de déverrouillage.4. Safety locking system according to any one of claims 1 to 3, characterized in that said rod (12) comprises in the vicinity of its heel (22) a notch (13) delimited on the heel side by said cam surface (16) and on the opposite side by an inclined wall (17) which is such that it is substantially parallel to the tail (18) of the pawl (8) which comes in abutment against this wall (17) when the pawl (8) is in the unlocked position. 5. Système de verrouillage de sécurité selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comporte un deuxième cliquet de verrouillage (10) qui coopère avec une deuxième échancrure (23) pratiquée dans la tringle (12) susdite en amont de la première échancrure (13) par rapport au talon (22) de ladite tringle (12), laquelle échancrure (23) constitue une troisième rampe qui agit sur ledit deuxième cliquet (10) pour mettre celui-ci en position sensiblement horizontale de déverrouillage, en antagonisme à l'action d'un ressort (27) qui sollicite normalement ledit deuxième cliquet (10) pour le maintenir en position de verrouillage.5. Security locking system according to any one of claims 1 to 4, characterized in that it comprises a second locking pawl (10) which cooperates with a second notch (23) formed in the rod (12) above upstream of the first notch (13) relative to the heel (22) of said rod (12), which notch (23) constitutes a third ramp which acts on said second pawl (10) to put the latter in a substantially horizontal position unlocking, in opposition to the action of a spring (27) which normally biases said second pawl (10) to maintain it in the locked position. 6. Système de verrouillage de sécurité selon la revendication 5, caractérisé en ce que ladite troisième rampe (23) est délimitée du côté amont, le plus voisin de l'extrémité extérieure de la tringle (12) par une surface inclinée (26) dont l'inclinaison est sensiblement de même angle par rapport à l'horizontale que la paroi inclinée (17) qui délimite la deuxième rampe (13) susdite côté amont et est telle qu'elle est sensiblement parallèle à la queue (29) dudit deuxième cliquet (10) lorsque ce dernier est en position horizontale de déverrouillage.6. Safety locking system according to claim 5, characterized in that said third ramp (23) is delimited on the upstream side, the closest to the outer end of the rod (12) by an inclined surface (26) of which the inclination is substantially the same angle relative to the horizontal as the inclined wall (17) which delimits the second ramp (13) aforesaid upstream side and is such that it is substantially parallel to the tail (29) of said second pawl (10) when the latter is in the horizontal unlocking position. 7. Système de verrouillage de sécurité selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'extrémité amont (9) de la première rampe (5) solidaire de la pièce intermédiaire de la glissière est biseautée suivant un angle sensiblement égal, par rapport à la verticale, à l'inclinaison du nez (7) qui forme l'extrémité intérieure de ladite première rampe (5), ledit biseau étant sensiblement parallèle à la tête (28) dudit deuxième cliquet (10) lorsque ce dernier est en position de verrouillage dans la glissière.7. Safety locking system according to any one of claims 1 to 6, characterized in that the upstream end (9) of the first ramp (5) integral with the intermediate piece of the slide is bevelled at a substantially angle equal, with respect to the vertical, to the inclination of the nose (7) which forms the inner end of said first ramp (5), said bevel being substantially parallel to the head (28) of said second pawl (10) when this the latter is in the locked position in the slide. 8. Système de verrouillage de sécurité selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'un ressort de rappel (30) associé à la tringle (12) solidaire du curseur mobile (4) provoque lorsqu'il est comprimé sous l'effet d'une action manuelle exercée sur un téton ou analogue de commande solidaire dudit ressort, lorsque lesdits premier et deuxième cliquets (8,10) se trouvent en position de verrouillage, le déverrouillage sensiblement simultané des deux cliquets par déplacement de la face inclinée (17) de la deuxième rampe (13) prévue au voisinage de l'extrémité de la tringle et de la face inclinée (26) de la troisième rampe (23), d'une course correspondant à la course de compression du ressort de rappel (30), lesquelles faces inclinées poussent en se déplaçant les queues (18,29) desdits premier et deuxième cliquets (8,10), contraignant ceux-ci à osciller autour de leur axe (40,41) et à se dégager des extrémités biseautées (9) de la première rampe (5).8. Safety locking system according to any one of claims 1 to 7, characterized in that a return spring (30) associated with the rod (12) integral with the movable cursor (4) causes when it is compressed under the effect of a manual action exerted on a stud or the like control integral with said spring, when said first and second pawls (8,10) are in the locked position, the substantially simultaneous unlocking of the two pawls by movement of the inclined face (17) of the second ramp (13) provided in the vicinity of the end of the rod and of the inclined face (26) of the third ramp (23), of a stroke corresponding to the compression stroke of the spring return (30), which inclined faces grow by moving the tails (18,29) of said first and second pawls (8,10), forcing them to oscillate around their axis (40,41) and to disengage bevelled ends (9) of the first ramp (5). 9. Système de verrouillage de sécurité selon la revendication 8, caractérisé en ce que l'action de compression exercée sur ledit ressort de rappel (30) lorsque le premier cliquet de verrouillage (8) se trouve en position de blocage dans la glissière, provoque le déverrouillage de la glissière par déplacement de la face inclinée (17) de la deuxième rampe (13), laquelle face inclinée pousse, en se déplaçant, la queue (18) dudit premier cliquet (8), contraignant celui-ci à osciller autour de son axe (40) et à se dégager du nez (7) de la première rampe (5) pour permettre la fermeture volontaire de la glissière.9. Safety locking system according to claim 8, characterized in that the compression action exerted on said return spring (30) when the first locking pawl (8) is in the locked position in the slide, causes unlocking the slide by displacement of the inclined face (17) of the second ramp (13), which inclined face pushes, while moving, the tail (18) of said first pawl (8), forcing it to oscillate around of its axis (40) and to disengage from the nose (7) of the first ramp (5) to allow voluntary closure of the slide. 10. Système de verrouillage de sécurité selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les billes destinées à faciliter le coulissement du curseur mobile (4) dans la glissière sont montées dans des logements (37) mobiles dans les gorges en regard l'une de l'autre ménagées res­ pectivement sur les tranches longitudinales du curseur mobile (4) et sur les faces de la pièce intermédiaire (2) de la glissière qui sont en regard desdites tranches.10. Safety locking system according to any one of claims 1 to 9, characterized in that the balls intended to facilitate the sliding of the movable cursor (4) in the slide are mounted in housings (37) movable in the grooves opposite one another formed respectively on the longitudinal edges of the movable slider (4) and on the faces of the intermediate piece (2) of the slide which are opposite said edges.
EP83401722A 1982-09-02 1983-08-30 Locking systems for telescopic ball-borne slides Withdrawn EP0107525A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8214999A FR2532532A1 (en) 1982-09-02 1982-09-02 IMPROVEMENTS IN SAFETY LATCHING SYSTEMS FOR TELESCOPIC BALL SLIDERS
FR8214999 1982-09-02

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EP0107525A1 true EP0107525A1 (en) 1984-05-02

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EP83401722A Withdrawn EP0107525A1 (en) 1982-09-02 1983-08-30 Locking systems for telescopic ball-borne slides

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EP (1) EP0107525A1 (en)
FR (1) FR2532532A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192990A2 (en) * 1985-02-26 1986-09-03 Rittal-Werk Rudolf Loh GmbH & Co. KG Assembly for the lateral guiding of a support of components movable into a frame or a switch cabinet
US6585335B2 (en) * 2001-09-28 2003-07-01 King Slide Works Co., Ltd. Rear-section bolt lock structure of a slide
GB2401534A (en) * 2003-03-05 2004-11-17 King Slide Works Co Ltd Two-way retainer for a drawer slide track assembly
US6926377B2 (en) * 2002-08-08 2005-08-09 Compx International Inc. Drawer slide latch and release mechanism
US7090319B2 (en) * 2001-08-17 2006-08-15 Accuride International, Inc. Guide tab and slide incorporating the same
GB2434081A (en) * 2006-01-16 2007-07-18 King Slide Works Co Ltd Latching mechanism for a telescopic drawer slide assembly
US7465000B2 (en) * 2006-11-09 2008-12-16 Nan Juen International Co., Ltd. Automatic drawer slide homing apparatus
US7604309B2 (en) * 2006-01-19 2009-10-20 King Slide Works Co., Ltd. Auto release retaining mechanism of a slide
US7794029B2 (en) * 2006-12-01 2010-09-14 Hong-Fu Jin Precision Industry (ShenZhen) Co., Ltd. Ball bearing slide assembly
DE102013103009B4 (en) * 2013-03-25 2017-05-04 Nan Juen International Co., Ltd. Pull-out rail with a releasable release protection
CN106793874A (en) * 2014-10-07 2017-05-31 保罗海蒂诗有限及两合公司 Pull out guiding piece

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
FR2608905B1 (en) * 1986-12-30 1989-12-08 Signaux Entr Electriques TELESCOPIC BALL SLIDE ESPECIALLY FOR DRAWERS
US5344226A (en) * 1993-03-12 1994-09-06 Lee Wen Ting Safety device for drawers
US5484197A (en) * 1993-03-29 1996-01-16 General Devices Co., Inc. Releasable latch for a telescoping slide assembly
US5417490A (en) * 1993-03-29 1995-05-23 General Devices Co., Inc. Telescoping slide assembly
US5385405A (en) * 1993-06-07 1995-01-31 General Devices Co., Inc. Floating roller retainer assembly for slides

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US937531A (en) * 1909-02-23 1909-10-19 Allen W Jones Driving mechanism for roundabouts.
GB856227A (en) * 1958-01-02 1960-12-14 Hallam Sleigh & Cheston Ltd Improvements relating to slide assemblies for use in connection with cabinets or receptacles containing pull-out units

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US3937531A (en) * 1975-03-03 1976-02-10 Hagen Magnus F Telescoping drawer slide section for 2-member telescopic ball bearing slides affording full extension

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Publication number Priority date Publication date Assignee Title
US937531A (en) * 1909-02-23 1909-10-19 Allen W Jones Driving mechanism for roundabouts.
GB856227A (en) * 1958-01-02 1960-12-14 Hallam Sleigh & Cheston Ltd Improvements relating to slide assemblies for use in connection with cabinets or receptacles containing pull-out units

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192990A3 (en) * 1985-02-26 1988-04-13 Rittal-Werk Rudolf Loh Gmbh & Co. Kg Assembly for the lateral guiding of a support of components movable into a frame, a switch cabinet etc.
EP0192990A2 (en) * 1985-02-26 1986-09-03 Rittal-Werk Rudolf Loh GmbH & Co. KG Assembly for the lateral guiding of a support of components movable into a frame or a switch cabinet
US7090319B2 (en) * 2001-08-17 2006-08-15 Accuride International, Inc. Guide tab and slide incorporating the same
US6585335B2 (en) * 2001-09-28 2003-07-01 King Slide Works Co., Ltd. Rear-section bolt lock structure of a slide
US6926377B2 (en) * 2002-08-08 2005-08-09 Compx International Inc. Drawer slide latch and release mechanism
GB2401534A (en) * 2003-03-05 2004-11-17 King Slide Works Co Ltd Two-way retainer for a drawer slide track assembly
GB2401534B (en) * 2003-03-05 2006-01-18 King Slide Works Co Ltd Two-way retainer for a slide track assembly of drawers
GB2434081A (en) * 2006-01-16 2007-07-18 King Slide Works Co Ltd Latching mechanism for a telescopic drawer slide assembly
GB2434081B (en) * 2006-01-16 2008-01-23 King Slide Works Co Ltd Latching mechanism for a telescopic drawer slide assembly
US7604309B2 (en) * 2006-01-19 2009-10-20 King Slide Works Co., Ltd. Auto release retaining mechanism of a slide
US7465000B2 (en) * 2006-11-09 2008-12-16 Nan Juen International Co., Ltd. Automatic drawer slide homing apparatus
US7794029B2 (en) * 2006-12-01 2010-09-14 Hong-Fu Jin Precision Industry (ShenZhen) Co., Ltd. Ball bearing slide assembly
DE102013103009B4 (en) * 2013-03-25 2017-05-04 Nan Juen International Co., Ltd. Pull-out rail with a releasable release protection
CN106793874A (en) * 2014-10-07 2017-05-31 保罗海蒂诗有限及两合公司 Pull out guiding piece

Also Published As

Publication number Publication date
FR2532532B1 (en) 1984-12-28
FR2532532A1 (en) 1984-03-09

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