EP0211717B1 - Buckle, especially for a safety belt - Google Patents

Buckle, especially for a safety belt Download PDF

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Publication number
EP0211717B1
EP0211717B1 EP86401461A EP86401461A EP0211717B1 EP 0211717 B1 EP0211717 B1 EP 0211717B1 EP 86401461 A EP86401461 A EP 86401461A EP 86401461 A EP86401461 A EP 86401461A EP 0211717 B1 EP0211717 B1 EP 0211717B1
Authority
EP
European Patent Office
Prior art keywords
bolt
locking member
buckle according
buckle
locking
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
EP86401461A
Other languages
German (de)
French (fr)
Other versions
EP0211717A1 (en
Inventor
Gérard Escaravage
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.)
ECIA Equipements et Composants pour lIndustrie Automobile SA
Original Assignee
ECIA Equipements et Composants pour lIndustrie Automobile 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 ECIA Equipements et Composants pour lIndustrie Automobile SA filed Critical ECIA Equipements et Composants pour lIndustrie Automobile SA
Publication of EP0211717A1 publication Critical patent/EP0211717A1/en
Application granted granted Critical
Publication of EP0211717B1 publication Critical patent/EP0211717B1/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B11/00—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts
    • A44B11/25—Buckles; Similar fasteners for interconnecting straps or the like, e.g. for safety belts with two or more separable parts
    • A44B11/2503—Safety buckles
    • A44B11/2507—Safety buckles actuated by a push-button
    • A44B11/2511—Safety buckles actuated by a push-button acting perpendicularly to the main plane of the buckle, e.g. placed on the front face of the buckle
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602—Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45623—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602—Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45623—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor
    • Y10T24/45639—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor including pivotally connected element on receiving member
    • Y10T24/45644—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor including pivotally connected element on receiving member for shifting pivotally connected interlocking component
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45602—Receiving member includes either movable connection between interlocking components or variable configuration cavity
    • Y10T24/45623—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor
    • Y10T24/4566—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor including slidably connected and guided element on receiving member
    • Y10T24/45665—Receiving member includes either movable connection between interlocking components or variable configuration cavity and operator therefor including slidably connected and guided element on receiving member for shifting pivotally connected interlocking component

Definitions

  • the present invention relates to devices intended to retain a passenger in a motor vehicle in his seat in the event of sudden deceleration thereof, for example during emergency braking or a collision.
  • the invention relates to a loop which, in a device of the type indicated, is intended to removably fix a strand of a safety strap to a fixed point on the vehicle body, for example by means of '' a tab forming a bolt bolt.
  • loops comprising a housing in which is placed a bracket in the form of a stirrup which is intended to be fixed to a retaining means fixed relative to the body of the vehicle and which defines between its wings , a guide corridor for the bolt opening at one end of this stirrup.
  • These loops further comprise a locking member mounted oscillating in the stirrup around an axis which is perpendicular to the wings of this stirrup as well as a stop member mounted sliding in these wings and erasable by means of a button. control, against the action of an elastic return device.
  • the bolt is retained in the loop by a projecting part of the locking member which prevents the withdrawal of the bolt from the locking passage, for example by entering an opening in the bolt.
  • this projecting part cooperates with a stop edge formed in the bottom of the support stirrup, possibly by elastic deformation of the axis of oscillation of the locking member in the stirrup, which makes it possible to obtain high efficiency of the buckle and considerable retaining force of the bolt.
  • Document FR-2 482 430 also discloses a seat belt buckle comprising a support intended to be fixed to a retaining means and defining a rectilinear passage into which the bolt can be introduced and which defines a sliding point for this one.
  • the bolt locking member is articulated on the support around an axis which extends parallel to the plane of the passage.
  • This locking member may have a first abutment surface retaining the bolt and extending perpendicular to the plane of the passage, being transverse with respect thereto, in the locked position of the loop while the locking member may also have at least a second abutment surface which is intended, in the locked position of the loop, to come into contact with a stop member mounted movable in translation on the support in a direction perpendicular to the axis of articulation of the locking member. The movement of this stop member releases the locking member and therefore the pin when opening the loop which is controlled by an operating button mounted on the support so as to be able to move in the same direction as the stop device.
  • the stop member is formed by a one-piece body having means for guiding and holding the springs extending on either side of this body in opposite directions perpendicular to the axis of articulation of the member. lock.
  • the object of the invention is therefore to provide a seat belt buckle whose construction is simple and easy assembly, by reducing the number of members involved in the constitution of such a buckle.
  • Another object of the invention is to provide a seat belt buckle which is smaller and lighter than the buckles of the prior art and the manufacture of which can be undertaken without respecting tight tolerances.
  • the subject of the invention is a buckle, in particular a safety belt for a motor vehicle, intended to removably fix a strand thereof to a fixed point on the vehicle body comprising a keeper assembly and a bolt secured to the strand to be fixed,
  • the strike assembly comprising, housed in a housing, a body intended to be fixed to a retaining means secured to the vehicle and which delimits a passage and a sliding plane for said bolt, a locking the bolt comprising an active part which engages in a recess of the bolt, in the locking position of the latter and articulated on the body so as to be able to tilt about an axis approximately parallel to the sliding plane and perpendicular to the direction of movement of the bolt, between a locking position and an unlocking position of said bolt, a slide mounted in said body so as to be able to move in the direction of movement of the bolt and which cooperates re on the one hand with a front face of the bolt and on the other hand with elastic means for ejecting the bolt, means
  • a seat belt buckle As shown in FIG. 1 a seat belt buckle according to the invention comprises a strike assembly disposed in a housing 1 constituted in a manner known per se, of an upper element 2 and of a lower element 3. Inside this housing 1 a body 4 of general U-shaped section is disposed. A locking member 5 constituted by a metal blade and which will be described in more detail below, is housed inside this body 4. On the other hand, an unlocking control member 6 having a bearing surface 7 is mounted, articulated around an axis 8 secured to the upper element of the housing 1.
  • the housing 1 and more particularly the upper element 2 thereof has a light 9 in which protrudes the unlocking control member 6 so that the user of the belt buckle have access to this body.
  • the housing 1 also includes a first opening 10 whose walls are inclined, opening inside of it.
  • this opening 10 and the body 4 define a passage and a sliding plane for, for example, a tab forming a bolt bolt, secured to a strand to be fixed to the seat belt.
  • the housing 1 also includes a second opening 11 formed in the end of the housing 1 opposite the end in which the opening 10 is made.
  • This opening 11 is formed opposite one end of the body 4. In the mode of embodiment shown, this opening 11 is intended to allow the passage of a retaining means (not shown), one end of which is fixed to the vehicle and the other end of which is fixed to the body 4, so as to make the body integral , of the vehicle.
  • said end of the body 4 can protrude outside the housing 1, through said opening 11 so as to allow the fixing of the loop, when it is assembled, on different devices for connection to the body . This allows for greater versatility of the loop.
  • the loop also comprises a slide 12 mounted movable, as will be seen later, sliding, between a front position and a rear position, in said body 4, in the direction of movement of the bolt.
  • This slide comprises a centering stud 13 for one end of a spring 14, the other end of which is centered on a stud 15 formed in one end of the locking member 5 folded back in a U shape.
  • this stud is formed in the upper branch of the U constituting this end of the locking member 5, this branch extending below the bearing surface 7 of the unlocking control member 6.
  • the locking member 5 also comprises two projecting parts forming a hinge pin 16 and extending on either side of the other branch of the U formed at one of the ends of the locking member, these projecting parts engaging in notches, for example trapezoidal, 17, formed in wings, for example 18, coming integrally with the body 4.
  • These projecting parts form the articulation axis 16 around which can oscillate the locking member, this hinge axis being approximately parallel to the plane of sliding of the bolt and perpendicular to its direction of movement.
  • the locking member 5 also includes an active part 19 extending in a lumen 20 of the body 4.
  • the seat belt buckle is shown in the open position, that is to say that a first bearing surface of the locking member bears on the slide 12.
  • This first bearing surface is constituted by said active part of the latter, which comes to bear on the slide, under the effect of the spring 14 which tends to spread the slide 12 and the part of the locking member in which the stud 15 is formed.
  • This spring pushes the slide 12 towards the opening 10 of the housing and causes the locking member 5 to tilt about the articulation axis 16, so that the active part of the locking member bears against the slide in the unlocking position of the loop.
  • the locking member 5, the slide 12 and the spring 14 form an assembly which is mounted with a certain clearance in the body 4. More particularly, this clearance is delimited by the bottom of the notches 17 of the wings 18 of the body 4 in a certain direction and by a stop edge constituted by a flange of the lumen 20 of the body, disposed opposite the active part 19 of the locking member, in the other direction.
  • FIG. 2 it can be seen that when a bolt 21 comprising a recess 22 is introduced through the opening 10 in the loop, the front face of the latter comes to bear against a bearing face 12a of the slide 12, above from which extend protruding parts 12b constituting means for guiding the bolt during its introduction or its ejection from the loop.
  • the slider then moves in the body 4, which causes compression of the spring 14.
  • This spring rotates the locking member 5 around the hinge pin 16 to cause the active part 19 to be introduced into the recess 22 of bolt 21.
  • the active part 19 of the locking member 5 cooperates with a flange of the recess 22 of the bolt 21 and with a stop edge of the body constituted by a flange of the lumen 20, to hold said bolt in the locked position, when a force is exerted on the bolt which tends to make it come out of the loop.
  • the active part of the locking member 5 is constituted by a part folded substantially at 180 ° from the metal blade constituting the locking member, this part being connected by a shoulder 5a to the rest of this member.
  • the spring 14 therefore constitutes both the elastic means for ejecting the bolt and the means urging the locking member towards its locking position.
  • the locking member 5 which may advantageously be made of steel, comprises an active part 19 constituted by a part folded substantially at 180 ° from the material constituting this member, this part being connected to the rest of the member by the shoulder 5a .
  • the first and second bearing surfaces are therefore delimited by this shoulder 5a.
  • this locking member has a U-shaped folded part whose upper branch defines, as we have seen, the bearing surface cooperating with the unlocking control member 6.
  • this upper branch is also formed the centering pin 15 intended to receive the end of the spring 14 for ejecting the bolt and urging this locking member towards its locking position.
  • This locking member also comprises two projecting parts 16a and 16b extending on either side of the lower branch of the U and engaging in the notches of the wings of the body 4 of the seat belt buckle, so to allow tilting of the locking member between the unlocking position of the bolt and the locking position inside the buckle.
  • a body 4 which is in section in the general form of a U, has a passage for the end of the bolt, this passage being delimited by flanges 23a and 23b formed in the two branches of the U constituting said body.
  • This body 4 has in its central part the lumen 20 having two guide edges 24a and 24b intended to cooperate with the slide to facilitate its sliding in the body.
  • the body 4 also comprises two wings 18a and 18b formed on either side of said lumen 20 and in which are formed trapezoidal notches 17a and 17b intended to receive the projecting parts 16a and 16b of the locking member.
  • a recess 25 allows, as we have seen, to fix this body 4 to a retaining means secured to the vehicle for fixing the seat belt buckle to the vehicle.
  • the slider 12 comprises a centering pin 13 intended to receive one end of the spring 14.
  • This slider also comprises two guide grooves 26a and 26b cooperating with the guide flanges 24a and 24b of the body so as to allow its sliding in said body.
  • the guidance of the slide is also facilitated by the presence of lateral guide shoes 27a and 27b arranged on either side of the slide and coming to bear on the flanges 24a and 24b of the light 20.
  • the slide 12 also includes the face d 'support 12a intended to cooperate with the front face of the bolt during its introduction or its ejection from the loop. Projecting parts 12b extend above this support face of the slide to guide the end of the bolt during its introduction or its ejection from the loop.

Landscapes

  • Automotive Seat Belt Assembly (AREA)
  • Buckles (AREA)

Description

La présente invention est relative aux dispositifs destinés à retenir sur son siège un passager d'un véhicule automobile en cas de décélération brusque de celui-ci, par exemple lors d'un freinage d'urgence ou d'une collision.The present invention relates to devices intended to retain a passenger in a motor vehicle in his seat in the event of sudden deceleration thereof, for example during emergency braking or a collision.

Plus particulièrement, l'invention concerne une boucle qui, dans un dispositif du genre indiqué, est destinée à fixer de façon amovible un brin d'une sangle de sécurité à un point fixe de la carrosserie du véhicule, par l'intermédiaire par exemple d'une languette formant pène de verrou.More particularly, the invention relates to a loop which, in a device of the type indicated, is intended to removably fix a strand of a safety strap to a fixed point on the vehicle body, for example by means of '' a tab forming a bolt bolt.

On connaît dans l'état de la technique des boucles comportant un boîtier dans lequel est placé un support en forme d'étrier qui est destiné à être fixé à un moyen de retenue fixe par rapport à la carrosserie du véhicule et qui définit entre ses ailes, un couloir de guidage pour le pène débouchant à une extrémité de cet étrier. Ces boucles comportent en outre un organe de verrouillage monté oscillant dans l'étrier autour d'un axe qui est perpendiculaire aux ailes de cet étrier ainsi qu'un organe d'arrêt monté coulissant dans ces ailes et effaçable au moyen d'un bouton de commande, à l'encontre de l'action d'un dispositif élastique de rappel.Known in the prior art loops comprising a housing in which is placed a bracket in the form of a stirrup which is intended to be fixed to a retaining means fixed relative to the body of the vehicle and which defines between its wings , a guide corridor for the bolt opening at one end of this stirrup. These loops further comprise a locking member mounted oscillating in the stirrup around an axis which is perpendicular to the wings of this stirrup as well as a stop member mounted sliding in these wings and erasable by means of a button. control, against the action of an elastic return device.

Dans ce type de boucles, le pène est retenu dans la boucle par une partie en saillie de l'organe de verrouillage qui vient empêcher le retrait du pène du couloir de verrouillage, par exemple en s'introduisant dans une ouverture ménagée dans le pène. Lors d'une forte traction sur la sangle, tendant à retirer le pène de la boucle cette partie en saillie vient coopérer avec un bord d'arrêt ménagé dans le fond de l'étrier support, éventuellement par déformation élastique de l'axe d'oscillation de l'organe de verrouillage dans l'étrier, ce qui permet d'obtenir une grande efficacité de la boucle et une force de retenue considérable du pène.In this type of loop, the bolt is retained in the loop by a projecting part of the locking member which prevents the withdrawal of the bolt from the locking passage, for example by entering an opening in the bolt. During a strong traction on the strap, tending to withdraw the bolt from the buckle, this projecting part cooperates with a stop edge formed in the bottom of the support stirrup, possibly by elastic deformation of the axis of oscillation of the locking member in the stirrup, which makes it possible to obtain high efficiency of the buckle and considerable retaining force of the bolt.

On connaît également d'après le document FR-2 482 430 une boucle pour ceinture de sécurité comprenant un support destiné à être fixé à un moyen de retenue et définissant un passage rectiligne dans lequel le pène peut être introduit et qui définit un point de coulissement pour celui-ci. L'organe de verrouillage du pêne est articulé sur le support autour d'un axe qui s'étend parallèlement au plan du passage. Cet organe de verrouillage peut présenter une première surface de butée retenant le pène et s'étendant perpendiculairement au plan du passage, en étant transversal par rapport à celui-ci, en position verrouillée de la boucle tandis que l'organe de verrouillage peut présenter également au moins une seconde surface de butée qui est destinée, dans la position verrouillée de la boucle, à venir en contact avec un organe d'arrêt monté mobile en translation sur le support dans une direction perpendiculaire à l'axe d'articulation de l'organe de verrouillage. Le déplacement de cet organe d'arrêt libère l'organe de verrouillage et donc le pène lors de l'ouverture de la boucle qui est commandée par un bouton de manoeuvre monté sur le support de manière à pouvoir se déplacer dans la même direction que l'organe d'arrêt.Document FR-2 482 430 also discloses a seat belt buckle comprising a support intended to be fixed to a retaining means and defining a rectilinear passage into which the bolt can be introduced and which defines a sliding point for this one. The bolt locking member is articulated on the support around an axis which extends parallel to the plane of the passage. This locking member may have a first abutment surface retaining the bolt and extending perpendicular to the plane of the passage, being transverse with respect thereto, in the locked position of the loop while the locking member may also have at least a second abutment surface which is intended, in the locked position of the loop, to come into contact with a stop member mounted movable in translation on the support in a direction perpendicular to the axis of articulation of the locking member. The movement of this stop member releases the locking member and therefore the pin when opening the loop which is controlled by an operating button mounted on the support so as to be able to move in the same direction as the stop device.

Des ressorts de rappel sont prévus pour agir sur l'organe de verrouillage, l'organe d'arrêt et le bouton de manoeuvre. L'organe d'arrêt est formé par un corps monobloc présentant des organes de guidage et de maintien des ressorts s'étendant de part et d'autre de ce corps dans des sens opposés perpendiculairement à l'axe d'articulation de l'organe de verrouillage.Return springs are provided to act on the locking member, the stop member and the operating button. The stop member is formed by a one-piece body having means for guiding and holding the springs extending on either side of this body in opposite directions perpendicular to the axis of articulation of the member. lock.

La construction de tels dispositifs présente un certain nombre d'inconvénients notamment au niveau du respect de tolérances assez serrées au cours de la fabrication, ce qui augmente les prix de revient de tels dispositifs. Par ailleurs, dans la technique automobile moderne, on souhaite réduire autant que possible le poids et l'encombrement des équipements et ce à tous les niveaux et en particulier dans le domaine des équipements de sécurité sans, bien entendu, pour autant sacrifier l'efficacité de ces équipements.The construction of such devices has a certain number of drawbacks, in particular as regards compliance with fairly tight tolerances during manufacture, which increases the cost prices of such devices. Furthermore, in modern automotive technology, it is desired to reduce as much as possible the weight and size of the equipment and this at all levels and in particular in the field of safety equipment without, of course, sacrificing efficiency of this equipment.

Le but de l'invention est donc de fournir une boucle de ceinture de sécurité dont la construction soit simple et la montage aisé, en réduisant la nombre des organes entrant dans la constitution d'une telle boucle.The object of the invention is therefore to provide a seat belt buckle whose construction is simple and easy assembly, by reducing the number of members involved in the constitution of such a buckle.

Un autre but de l'invention est de fournir une boucle de ceinture de sécurité qui soit plus petite et plus légère que les boucles de la technique antérieure et dont la fabrication puisse être entreprise sans le respect de tolérances serrées.Another object of the invention is to provide a seat belt buckle which is smaller and lighter than the buckles of the prior art and the manufacture of which can be undertaken without respecting tight tolerances.

A cet effet, l'invention a pour objet une boucle, notamment de ceinture de sécurité pour véhicule automobile, destinée à fixer de façon amovible un brin de celle-ci à un point fixe de la carrosserie du véhicule comprenant un ensemble de gâche et un pène solidaire du brin à fixer, l'ensemble de gâche comportant, logés dans un boîtier, un corps destiné à être fixé à un moyen de retenue solidaire du véhicule et qui délimite un passage et un plan de coulissement pour ledit pène, un organe de verrouillage du pène comportant une partie active qui s'engage dans un évidement du pène, en position de verrouillage de celui-ci et articulé sur le corps de façon à pouvoir basculer autour d'un axe à peu près parallèle au plan de coulissement et perpendiculaire à la direction de déplacement du pène, entre une position de verrouillage et une position de déverrouillage dudit pène, un coulisseau monté dans ledit corps de façon à pouvoir se déplacer suivant la direction de déplacement du pène et qui coopère d'une part avec une face frontale du pène et d'autre part avec des moyens élastiques d'éjection du pène, des moyens sollicitant l'organe de verrouillage vers sa position de verrouillage du pène et des moyens de commande de déverrouillage pour déplacer l'organe de verrouillage vers sa position de déverrouillage du pène, caractérisée en ce que les moyens d'éjection du pène et les moyens sollicitant l'organe de verrouillage vers sa position de verrouillage du pène, sont constitués par un ressort interposé entre le coulisseau et l'organe de verrouillage.To this end, the subject of the invention is a buckle, in particular a safety belt for a motor vehicle, intended to removably fix a strand thereof to a fixed point on the vehicle body comprising a keeper assembly and a bolt secured to the strand to be fixed, the strike assembly comprising, housed in a housing, a body intended to be fixed to a retaining means secured to the vehicle and which delimits a passage and a sliding plane for said bolt, a locking the bolt comprising an active part which engages in a recess of the bolt, in the locking position of the latter and articulated on the body so as to be able to tilt about an axis approximately parallel to the sliding plane and perpendicular to the direction of movement of the bolt, between a locking position and an unlocking position of said bolt, a slide mounted in said body so as to be able to move in the direction of movement of the bolt and which cooperates re on the one hand with a front face of the bolt and on the other hand with elastic means for ejecting the bolt, means urging the locking member towards its bolt locking position and unlocking control means for moving the locking member towards its bolt unlocking position, characterized in that the means for ejecting the bolt and the means urging the locking member towards its bolt locking position, are made up by a spring interposed between the slide and the locking member.

L'invention sera mieux comprise à l'aide de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés sur lesquels:

  • - les Fig. 1 à 4 illustrent le fonctionnement d'une boucle de ceinture de sécurité selon l'invention;
  • - la Fig. 5 représente un mode de réalisation d'un organe de verrouillage entrant dans la constitution d'une boucle de ceinture de sécurité selon l'invention;
  • - la Fig. 6 représente un mode de réalisation d'un corps entrant dans la constitution d'une boucle de ceinture de sécurité selon l'invention; et
  • - la Fig. 7 représente un mode de réalisation d'un coulisseau entrant dans la constitution d'une boucle de ceinture de sécurité selon l'invention.
The invention will be better understood with the aid of the description which follows, given solely by way of example and made with reference to the appended drawings in which:
  • - Figs. 1 to 4 illustrate the operation of a seat belt buckle according to the invention;
  • - Fig. 5 shows an embodiment of a locking member forming part of a seat belt buckle according to the invention;
  • - Fig. 6 shows an embodiment of a body forming part of a seat belt buckle according to the invention; and
  • - Fig. 7 shows an embodiment of a slider forming part of a seat belt buckle according to the invention.

Ainsi qu'il est représenté sur la Fig. 1 une boucle de ceinture de sécurité selon l'invention comporte un ensemble de gâche disposé dans un boîtier 1 constitué de manière connue en soi, d'un élément supérieur 2 et d'un élément inférieur 3. A l'intérieur de ce boîtier 1 est disposé un corps 4 de section générale en forme de U. Un organe de verrouillage 5 constitué par une lame métallique et qui sera décrit plus en détail par la suite, est logé à l'intérieur de ce corps 4. D'autre part, un organe de commande de déverrouillage 6 présentant une surface d'appui 7 est monté, articulé autour d'un axe 8 solidaire de l'élément supérieur du boîtier 1.As shown in FIG. 1 a seat belt buckle according to the invention comprises a strike assembly disposed in a housing 1 constituted in a manner known per se, of an upper element 2 and of a lower element 3. Inside this housing 1 a body 4 of general U-shaped section is disposed. A locking member 5 constituted by a metal blade and which will be described in more detail below, is housed inside this body 4. On the other hand, an unlocking control member 6 having a bearing surface 7 is mounted, articulated around an axis 8 secured to the upper element of the housing 1.

Ainsi qu'on peut le constater, le boîtier 1 et plus particulièrement l'élément supérieur 2 de celui-ci comporte une lumière 9 dans laquelle fait saillie l'organe de commande de déverrouillage 6 de façon que l'utilisateur de la boucle de ceinture de sécurité ait accès à cet organe.As can be seen, the housing 1 and more particularly the upper element 2 thereof has a light 9 in which protrudes the unlocking control member 6 so that the user of the belt buckle have access to this body.

Le boîtier 1 comporte également une première ouverture 10 dont les parois sont inclinées, débouchant à l'intérieur de celui-ci.The housing 1 also includes a first opening 10 whose walls are inclined, opening inside of it.

Comme nous le verrons par la suite, cette ouverture 10 et le corps 4 définissent un passage et un plan de coulissement pour par exemple une languette formant pène de verrou, solidaire d'un brin à fixer de la ceinture de sécurité.As we will see later, this opening 10 and the body 4 define a passage and a sliding plane for, for example, a tab forming a bolt bolt, secured to a strand to be fixed to the seat belt.

Le boîtier 1 comporte également une seconde ouverture 11 ménagée dans l'extrémité du boîtier 1 opposée à l'extrémité dans laquelle est pratiquée l'ouverture 10. Cette ouverture 11 est ménagée en regard d'une extrémité du corps 4. Dans le mode de réalisation représenté, cette ouverture 11 est destinée à permettre le passage d'un moyen de retenue (non représenté) dont une extrémité est fixée sur le vehicule et dont l'autre extrémité est fixée sur le corps 4, de façon à rendre solidaire le corps, du véhicule.The housing 1 also includes a second opening 11 formed in the end of the housing 1 opposite the end in which the opening 10 is made. This opening 11 is formed opposite one end of the body 4. In the mode of embodiment shown, this opening 11 is intended to allow the passage of a retaining means (not shown), one end of which is fixed to the vehicle and the other end of which is fixed to the body 4, so as to make the body integral , of the vehicle.

Selon un autre mode de réalisation, ladite extrémité du corps 4 peut faire saillie au dehors du boîtier 1, à travers ladite ouverture 11 de façon à permettre la fixation de la boucle, lorsqu'elle est assemblée, sur différents dispositifs de liaison à la carrosserie. Ceci permet d'obtenir une plus grande polyvalence de la boucle.According to another embodiment, said end of the body 4 can protrude outside the housing 1, through said opening 11 so as to allow the fixing of the loop, when it is assembled, on different devices for connection to the body . This allows for greater versatility of the loop.

La boucle comporte également un coulisseau 12 monté déplaçable, comme on le verra par la suite, à coulissement, entre une position avant et une position arrière, dans ledit corps 4, suivant la direction de déplacement du pène. Ce coulisseau comporte un téton de centrage 13 pour une extrémité d'un ressort 14 dont l'autre extrémité est centrée sur un téton 15 formé dans une extrémité de l'organe de verrouillage 5 repliée en forme de U. Comme on peut le voir, ce téton est formé dans la branche supérieure du U constituant cette extrémité de l'organe de verrouillage 5, cette branche se prolongeant au-dessous de la surface d'appui 7 de l'organe de commande de déverrouillage 6.The loop also comprises a slide 12 mounted movable, as will be seen later, sliding, between a front position and a rear position, in said body 4, in the direction of movement of the bolt. This slide comprises a centering stud 13 for one end of a spring 14, the other end of which is centered on a stud 15 formed in one end of the locking member 5 folded back in a U shape. As can be seen, this stud is formed in the upper branch of the U constituting this end of the locking member 5, this branch extending below the bearing surface 7 of the unlocking control member 6.

L'organe de verrouillage 5 comporte également deux parties en saillie formant un axe d'articulation 16 et s'étendant de part et d'autre de l'autre branche du U formé à l'une des extrémités de l'organe de verrouillage, ces parties en saillie s'engageant dans des encoches, par exemple trapézoïdales, 17, ménagées dans des ailes, par exemple 18, venant de matière avec le corps 4. Ces parties en saillie forment l'axe d'articulation 16 autour duquel peut osciller l'organe de verrouillage, cet axe d'articulation étant à peu près parallèle au plan de coulissement du pène et perpendiculaire à sa direction de déplacement.The locking member 5 also comprises two projecting parts forming a hinge pin 16 and extending on either side of the other branch of the U formed at one of the ends of the locking member, these projecting parts engaging in notches, for example trapezoidal, 17, formed in wings, for example 18, coming integrally with the body 4. These projecting parts form the articulation axis 16 around which can oscillate the locking member, this hinge axis being approximately parallel to the plane of sliding of the bolt and perpendicular to its direction of movement.

L'organe de verrouillage 5 comporte également une partie active 19 s'étendant dans une lumière 20 du corps 4. Sur cette Fig. 1, la boucle de ceinture de sécurité est représentée en position ouverte, c'est à dire qu'une première surface de portée de l'organe de verrouillage prend appui sur le coulisseau 12. Cette première surface de portée est constituée par ladite partie active de celui-ci, qui vient en appui sur le coulisseau, sous l'effet du ressort 14 qui tend à écarter le coulisseau 12 et la partie de l'organe de verrouillage dans laquelle est ménagé le téton 15. Ce ressort pousse le coulisseau 12 vers l'ouverture 10 du boîtier et fait basculer l'organe de verrouillage 5 autour de l'axe d'articulation 16, de sorte que la partie active de l'organe de verrouillage vient en appui contre le coulisseau en position de déverrouillage de la boucle.The locking member 5 also includes an active part 19 extending in a lumen 20 of the body 4. In this FIG. 1, the seat belt buckle is shown in the open position, that is to say that a first bearing surface of the locking member bears on the slide 12. This first bearing surface is constituted by said active part of the latter, which comes to bear on the slide, under the effect of the spring 14 which tends to spread the slide 12 and the part of the locking member in which the stud 15 is formed. This spring pushes the slide 12 towards the opening 10 of the housing and causes the locking member 5 to tilt about the articulation axis 16, so that the active part of the locking member bears against the slide in the unlocking position of the loop.

Il est à noter que dans cette position, l'organe de verrouillage 5, le coulisseau 12 et le ressort 14 forment un ensemble qui est monté avec un certain jeu dans le corps 4. Plus particulièrement, ce jeu est délimité par le fond des encoches 17 des ailes 18 du corps 4 dans une certaine direction et par un bord d'arrêt constitué par un rebord de la lumière 20 du corps, disposé en regard de la partie active 19 de l'organe de verrouillage, dans l'autre direction.It should be noted that in this position, the locking member 5, the slide 12 and the spring 14 form an assembly which is mounted with a certain clearance in the body 4. More particularly, this clearance is delimited by the bottom of the notches 17 of the wings 18 of the body 4 in a certain direction and by a stop edge constituted by a flange of the lumen 20 of the body, disposed opposite the active part 19 of the locking member, in the other direction.

Si l'on se reporte maintenant à la Fig. 2, on voit que lorsqu'un pène 21 comportant un évidement 22 est introduit par l'ouverture 10 dans la boucle, la face frontale de celui-ci vient en appui contre une face d'appui 12a du coulisseau 12, au-dessus de laquelle s'étendent des parties en saillie 12b constituant des moyens de guidage du pène lors de son introduction ou de son éjection de la boucle. Le coulisseau se déplace alors dans le corps 4, ce qui entraîne une compression du ressort 14. Ce ressort fait pivoter l'organe de verrouillage 5 autour de l'axe d'articulation 16 pour amener la partie active 19 à s'introduire dans l'évidement 22 du pène 21.If we now refer to FIG. 2, it can be seen that when a bolt 21 comprising a recess 22 is introduced through the opening 10 in the loop, the front face of the latter comes to bear against a bearing face 12a of the slide 12, above from which extend protruding parts 12b constituting means for guiding the bolt during its introduction or its ejection from the loop. The slider then moves in the body 4, which causes compression of the spring 14. This spring rotates the locking member 5 around the hinge pin 16 to cause the active part 19 to be introduced into the recess 22 of bolt 21.

Dans cette position verrouillée, la partie active 19 de l'organe de verrouillage 5 coopère avec un rebord de l'évidement 22 du pène 21 et avec un bord d'arrêt du corps constitué par un rebord de la lumière 20, pour maintenir ledit pène en position verrouillée, lorsqu'on exerce un effort sur le pène qui tend à le faire sortir de la boucle.In this locked position, the active part 19 of the locking member 5 cooperates with a flange of the recess 22 of the bolt 21 and with a stop edge of the body constituted by a flange of the lumen 20, to hold said bolt in the locked position, when a force is exerted on the bolt which tends to make it come out of the loop.

Il est à noter que la partie active de l'organe de verrouillage 5 est constituée par une partie repliée sensiblement à 180° de la lame métallique constituant l'organe de verrouillage, cette partie étant reliée par un épaulement 5a au reste de cet organe. Une portion 19ade la lame métallique constituant l'organe de verrouillage disposée entre cette première surface de portée et les parties en saillie constituant l'axe d'articulation, forme une seconde surface de portée qui, comme on le voit sur cette Fig. 2 est en appui contre le coulisseau 12 dans la position verrouillée de la boucle de manière à limiter le basculement de l'organe de verrouillage.It should be noted that the active part of the locking member 5 is constituted by a part folded substantially at 180 ° from the metal blade constituting the locking member, this part being connected by a shoulder 5a to the rest of this member. A 19ade portion the metal blade constituting the locking member disposed between this first bearing surface and the projecting parts constituting the axis of articulation, forms a second bearing surface which, as seen in this FIG. 2 is in abutment against the slide 12 in the locked position of the loop so as to limit the tilting of the locking member.

Lors du déverrouillage (Fig. 3) une action D exercée par exemple par l'utilisateur, sur l'organe de commande de déverrouillage 6 amène la surface d'appui 7 de celui-ci à venir en contact avec la branche supérieure du U formé à cette extrémité de l'organe de verrouillage 5. Cette branche s'étendant comme on l'a vu, au-delà du téton de centrage 15 sur lequel est disposée une extrémité du ressort 14, cette action amène l'organe de déverrouillage 5 à basculer autour de l'axe d'articulation 16 de façon que la partie active de celui-ci se dégage de l'ouverture 22 du pène 21.When unlocking (Fig. 3) an action D exerted for example by the user, on the unlocking control member 6 causes the bearing surface 7 thereof to come into contact with the upper branch of the U formed at this end of the locking member 5. This branch extending as we have seen, beyond the centering pin 15 on which is disposed one end of the spring 14, this action brings about the unlocking member 5 to tilt around the articulation axis 16 so that the active part of the latter emerges from the opening 22 of the bolt 21.

La partie active de l'organe de verrouillage ayant libéré cette ouverture 22 du pène 21, le coulisseau 12 sous l'action du ressort 14, est ramené vers sa position de déverrouillage (Fig. 4) en éjectant le pène 21.The active part of the locking member having released this opening 22 from the bolt 21, the slide 12 under the action of the spring 14, is brought back to its unlocking position (FIG. 4) by ejecting the bolt 21.

Le ressort 14 constitue donc à la fois les moyens élastiques d'éjection du pène et les moyens sollicitant l'organe de verrouillage vers sa position de verrouillage.The spring 14 therefore constitutes both the elastic means for ejecting the bolt and the means urging the locking member towards its locking position.

Ainsi qu'il est représenté sur la Fig. 5, l'organe de verrouillage 5 qui peut être avantageusement en acier, comporte une partie active 19 constituée par une partie repliée sensiblement à 180° du matériau constituant cet organe, cette partie étant reliée au reste de l'organe par l'épaulement 5a. La portion 19a de la lame métallique, disposée entre la partie active et les parties en saillie, définit comme on l'a vu, la seconde surface de portée de l'organe de verrouillage. Les première et seconde surfaces de portée sont donc délimitées par cet épaulement 5a. A son autre extrémité, cet organe de verrouillage présente une partie repliée en forme de U dont la branche supérieure définit, comme on l'a vu, la surface d'appui coopérant avec l'organe de commande de déverrouillage 6. Dans cette branche supérieure est également formé le téton de centrage 15 destiné à recevoir l'extrémité du ressort 14 d'éjection du pène et sollicitant cet organe de verrouillage vers sa position de verrouillage. Cet organe de verrouillage comporte également deux parties en saillie 16a et 16b s'étendant de part et d'autre de la branche inférieure du U et s'engageant dans les encoches des ailes du corps 4 de la boucle de ceinture de sécurité, de manière à permettre un basculement de l'organe de verrouillage entre la position de déverrouillage du pène et la position de verrouillage à l'intérieur de la boucle.As shown in FIG. 5, the locking member 5 which may advantageously be made of steel, comprises an active part 19 constituted by a part folded substantially at 180 ° from the material constituting this member, this part being connected to the rest of the member by the shoulder 5a . The portion 19a of the metal blade, arranged between the active part and the projecting parts, defines, as we have seen, the second bearing surface of the locking member. The first and second bearing surfaces are therefore delimited by this shoulder 5a. At its other end, this locking member has a U-shaped folded part whose upper branch defines, as we have seen, the bearing surface cooperating with the unlocking control member 6. In this upper branch is also formed the centering pin 15 intended to receive the end of the spring 14 for ejecting the bolt and urging this locking member towards its locking position. This locking member also comprises two projecting parts 16a and 16b extending on either side of the lower branch of the U and engaging in the notches of the wings of the body 4 of the seat belt buckle, so to allow tilting of the locking member between the unlocking position of the bolt and the locking position inside the buckle.

Comme il est représenté sur la Fig. 6, un corps 4 qui se présente en section sous la forme générale d'un U, comporte un passage pour l'extrémité du pène, ce passage étant délimité par des rebords 23a et 23b formés dans les deux branches du U constituant ledit corps.As shown in FIG. 6, a body 4 which is in section in the general form of a U, has a passage for the end of the bolt, this passage being delimited by flanges 23a and 23b formed in the two branches of the U constituting said body.

Ce corps 4 comporte dans sa partie centrale la lumière 20 présentant deux rebords de guidage 24a et 24b destinés à coopérer avec le coulisseau pour faciliter son coulissement dans le corps.This body 4 has in its central part the lumen 20 having two guide edges 24a and 24b intended to cooperate with the slide to facilitate its sliding in the body.

Le corps 4 comporte également deux ailes 18a et 18b formées de part et d'autre de ladite lumière 20 et dans lesquelles sont ménagées des encoches trapézoïdales 17a et 17b destinées à recevoir les parties en saillie 16a et 16b de l'organe de verrouillage. Un évidement 25 permet comme on l'a vu de fixer ce corps 4 à un moyen de retenue solidaire du véhicule pour la fixation de la boucle de ceinture de sécurité sur le véhicule.The body 4 also comprises two wings 18a and 18b formed on either side of said lumen 20 and in which are formed trapezoidal notches 17a and 17b intended to receive the projecting parts 16a and 16b of the locking member. A recess 25 allows, as we have seen, to fix this body 4 to a retaining means secured to the vehicle for fixing the seat belt buckle to the vehicle.

Ainsi qu'il est représenté sur la Fig. 7, le coulisseau 12 comprend un téton de centrage 13 destiné à recevoir une extrémité du ressort 14. Ce coulisseau comporte également deux rainures de guidage 26a et 26b coopérant avec les rebords de guidage 24a et 24b du corps de façon à permettre son coulissement dans ledit corps. Le guidage du coulisseau est également facilité par la présence de patins latéraux de guidage 27a et 27b disposés de part et d'autre du coulisseau et venant prendre appui sur les rebords 24a et 24b de la lumière 20. Le coulisseau 12 comporte également la face d'appui 12a destinée à coopérer avec la face frontale du pène lors de son introduction ou de son éjection de la boucle. Des parties en saillie 12b s'étendent au-dessus de cette face d'appui du coulisseau pour guider l'extrémité du pène lors de son introduction ou de son éjection de la boucle.As shown in FIG. 7, the slider 12 comprises a centering pin 13 intended to receive one end of the spring 14. This slider also comprises two guide grooves 26a and 26b cooperating with the guide flanges 24a and 24b of the body so as to allow its sliding in said body. The guidance of the slide is also facilitated by the presence of lateral guide shoes 27a and 27b arranged on either side of the slide and coming to bear on the flanges 24a and 24b of the light 20. The slide 12 also includes the face d 'support 12a intended to cooperate with the front face of the bolt during its introduction or its ejection from the loop. Projecting parts 12b extend above this support face of the slide to guide the end of the bolt during its introduction or its ejection from the loop.

Claims (16)

1. A buckle, more particularly for a motor vehicle safety belt, which is adapted to attach in a removable manner a length of the belt to a fixed point of the vehicle body, comprising a catch assembly and a bolt (21) unitary with the length to be attached, the catch assembly comprising, housed in a casing (1), a body (4) adapted to be attached to a means of restraint forming an integral part of the vehicle and bounding a passage and a sliding plane for the bolt, a member (5) for locking the bolt, comprising an operating portion (19) which engages in a recess (22) in the bolt (21) in the position in which the latter is locked, and which is articulated to the body (4) so that it can swing around a pivot (16) which is substantially parallel with the sliding plane and perpendicular to the direction of travel of the bolt, between a bolt locking position and a bolt unlocking position, a sliding block (12) mounted in said body (4) so as to be able to travel in the direction of travel of the bolt (21) and which cooperates on the one hand with a front face of the bolt and on the other with resilient means for ejecting the bolt, means urging the locking member towards its bolt locking position and unlocking control means (6) for moving the locking member (5) into its bolt unlocking position, characterized in that the resilient means for ejecting the bolt and the means urging the locking member into its bolt locking position are formed by a spring (14) interposed between the sliding block (12) and the locking member (5).
2. A buckle according to claim 1, characterized in that the slide (12) is mounted to be displaced in the body (4) between a forward position, in which a first bearing surface of the locking member bears against the sliding block (12), corresponding to the position in which the bolt is unlocked, and a rear position in which the locking member has oscillated in relation to said body, so that a second bearing surface of the locking member bears against the sliding block, corresponding to the position in which the bolt is locked.
3. A buckle according to claims 1 or 2, characterized in that in the locking position, the operative portion (19) of the locking member (5) cooperates with a side of the recess (22) in the bolt (21) and with a stop edge of the body to retain the bolt in the locked position in the buckle.
4. A buckle according to claim 3, characterized in that said stop edge of the body is formed by a side of a slot (20) in the body (4).
5. A buckle according to any of the preceding claims, characterized in that the locking member is formed by a metal blade having said operating portion (19) at one of its ends and a U-shaped folded portion at its other end.
6. A buckle according to claim 5, characterized in that the articulation pivot is formed by two projecting parts (16a, 16b) extending on either side of one of the arms of the U formed at one of the ends of the locking member (5), such projecting parts engaging in notches (17a, 17b) provided in wings (18a, 18b) extending substantially at right angles below said body (4).
7. A buckle according to claim 6, characterized in that said wings (18a, 18b) are made in one piece with the body (4).
8. A buckle according to claims 6 or 7, characterised in that the other arm of the U bounds a bearing surface adapted to cooperate with the unlocking control member (6) to move the locking member (5) into its unlocking position.
9. A buckle according to claim 8, characterized in that this arm also comprises a stud (15) for receiving one end of said spring (14).
10. A buckle according to any of claims 2 to 8, characterized in that said first bearing surface is formed by said operating portion (19) of the locking member (5) and the second bearing surface is formed by a portion (19a) of the metal blade forming the locking member disposed between said operating portion thereof and the projecting parts forming the articulation pivot.
11. A buckle according to any of the preceding claims, characterized in that the operating portion of the locking member is formed by a portion folded at substantially 180° to the metal blade.
12. A buckle according to claim 11, characterized in that the first and second bearing surfaces are bounded by a shoulder (5a) connecting said operating portion (19) of the locking member (5) to the remainder thereof.
13. A buckle according to any of the preceding claims, characterized in that the sliding block (12) is formed with grooves (26a, 26b) and skids (27a, 27b) adapted to cooperate with the guide surfaces of the body (4).
14. A buckle according to claim 13, characterized in that the guide surfaces are formed by sides (24a, 24b) of the slot (20) with which said body is formed.
15. A buckle according to any of the preceding claims, characterized in that the sliding block (12) comprises means for guiding the bolt when it is introduced into or ejected from the buckle.
16. A buckle according to claim 15, characterized in that the guide means are formed by projecting parts (12b) extending above one bearing face (12a) of the sliding block which is adapted to cooperate with the front face of the bolt when it is introduced into or ejected from the buckle.
EP86401461A 1985-07-17 1986-07-01 Buckle, especially for a safety belt Expired EP0211717B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8510965A FR2584901B1 (en) 1985-07-17 1985-07-17 IMPROVED BUCKLE, ESPECIALLY FOR A SEAT BELT
FR8510965 1985-07-17

Publications (2)

Publication Number Publication Date
EP0211717A1 EP0211717A1 (en) 1987-02-25
EP0211717B1 true EP0211717B1 (en) 1989-03-08

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Family Applications (1)

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EP86401461A Expired EP0211717B1 (en) 1985-07-17 1986-07-01 Buckle, especially for a safety belt

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US (1) US4677715A (en)
EP (1) EP0211717B1 (en)
JP (1) JPS6219102A (en)
DE (1) DE3662228D1 (en)
ES (1) ES295536Y (en)
FR (1) FR2584901B1 (en)

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Publication number Publication date
FR2584901A1 (en) 1987-01-23
ES295536Y (en) 1987-11-01
DE3662228D1 (en) 1989-04-13
FR2584901B1 (en) 1987-11-27
JPS6219102A (en) 1987-01-27
EP0211717A1 (en) 1987-02-25
ES295536U (en) 1987-03-16
US4677715A (en) 1987-07-07

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