EP0702906B1 - Pair of synchronized hinges for securing a retractable visor on a helmet - Google Patents

Pair of synchronized hinges for securing a retractable visor on a helmet Download PDF

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Publication number
EP0702906B1
EP0702906B1 EP95402088A EP95402088A EP0702906B1 EP 0702906 B1 EP0702906 B1 EP 0702906B1 EP 95402088 A EP95402088 A EP 95402088A EP 95402088 A EP95402088 A EP 95402088A EP 0702906 B1 EP0702906 B1 EP 0702906B1
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EP
European Patent Office
Prior art keywords
helmet
visor
hinges
pair
pin
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Expired - Lifetime
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EP95402088A
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German (de)
French (fr)
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EP0702906A1 (en
Inventor
Eric Petit
Vincent Vitte
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Thales Avionics SAS
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Thales Avionics SAS
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Publication of EP0702906A1 publication Critical patent/EP0702906A1/en
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    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/18—Face protection devices
    • A42B3/22—Visors

Definitions

  • the present invention relates to an articulated fixing for a visor helmet that can be operated with one hand while allowing tilting of the visor relative to the helmet from a position folded over the face to a raised position revealing the face and inversely according to a complex movement starting with a translation moving the visor away from the helmet in order to release it from a possible seal or ledge and continuing to the raised position with a rotation retracting the visor above the face.
  • Visor helmets are used to protect the head of a pilot in the event of an impact.
  • the helmet protects the skull while the visor protects the face and is used for visual comfort in an aggressive atmosphere: wind, dust, light, fog ... and possibly protection of the environment aggressive chemical.
  • sealing must be ensured between the helmet shell and the visor in the folded position. This requires the presence of a peripheral seal and imposes a frontal docking on the visor causing the latter a tilting movement that does not not limited to a simple rotation and which can no longer be obtained by a direct manipulation of the visor because such manipulation would require the controls a complex movement requiring both hands.
  • helmets are equipped with a helmet sight which is an optical image projection system using a semi-reflecting area visor in the folded position to display in front of the eyes of the driver's driving aid symbols. This requires very precise and excellent reproducibility of the visor position by compared to the other optical elements worn by the helmet.
  • a device comprising the characteristics of the preamble of the claim 1 is known from WO-A-87/04323.
  • the object of the present invention is an articulated fixing of a visor on a helmet which gives the visor a movement of complex tilting based on translation and rotation, and which is can be operated directly by the helmet wearer, with one hand, by simple rotation of a joystick, without requiring motor assistance electric.
  • mechanical means of synchronization include: a cable which slides in a sheath connecting the two joints following the outline of the helmet shell and which is equipped with its two ends of a rack, and two toothed pinions integral with the pivot pins and crank pins of the joints that mesh with the racks so that a rotational movement of a crankpin causes the cable to slide in its sheath and a movement of identical rotation of the other crankpin.
  • the pinions and racks are then mounted in gear boxes housed at the base of each joint.
  • the handles have the shape of a shell having on its outer face depressions facilitating their gripping.
  • the helmet has a protective shell 1 enveloping the skull with the exception of the face.
  • This shell 1 is closed at the front by a fairing 2 in its lower part and by a visor 3 in its upper part.
  • the visor 3 is articulated laterally to the shell 1 of the helmet so that it can be lowered or raised, the visor being operated by means of a lever 4 covering each joint.
  • the shell 1 of the helmet contains, as shown in FIG. 2, a hoop-shaped plate 5 which supports an image-generating tube 6 associated with an optical image projection system 7 on a semi-reflecting area of the visor and the hinges 8 for fixing the visor 3.
  • the image generator tube 6 and the associated optical system 7 are mount on the plate 5 by means of lugs 10, 11 fitting onto tabs placed one 12 at the top of the plate 5, the other 13 on the back of the articulation support 8.
  • the joints 8 for attaching the visor 3 to the helmet are mounted at the ends of the arch of the plate 5, at the temples wearing a helmet and joined together by a sheathed cable 9 of motion synchronization.
  • This facilitates adjustments the respective positions of the elements of the optical system of image projection, avoids the problems posed by the lack of rigidity of the helmet shell 1 on the stability of the adjustment of the relative positions of the visor and other elements of the optical image projection system and simplifies maintenance of the helmet visor.
  • Each end of the arch of the plate 5 ends substantially vertically by an ear 20 pierced with a median hole 21 for a horizontal pivot axis 22 having a flattened circular head 23 extended by a rod 24.
  • the pivot axis 22 is threaded into the hole 21 of the ear 20 from the inside. Its circular head 23 is pressed against the rear wall of the ear 20 while its rod 24 protrudes horizontally from the front wall of the ear in a gearbox.
  • a cover 28 of the box gear is threaded on the pivot axis 22 to close the box gear and secure the pinion 25 and the rack 26.
  • This cover 28 has an extension on the outside tubular 29 serving as a hinge axis surrounded by an annular plate 30 serving as a bearing for the joint.
  • the first and second washers 31, 33 serve as shims thick. They are peelable. By adjusting their individual thicknesses while keeping them a constant overall thickness, we can vary the lateral position of the lug 32 of the visor relative to the plate 5 for fine transverse adjustment of the visor position by compared to the helmet which is useful for adjusting the system elements image projection optics.
  • the lateral attachment tab 32 of the visor is threaded on the tubular extension 29 of the cover 28 of the gearbox surrounding the rod of the pivot axis 22 through a hole 40 in the form of buttonhole whose width determines the amplitude of the travel in translation of the visor relative to the helmet. It has a cam-shaped notch 41 in which a guide finger slides 42 fixed to the outer wall of the gearbox and integral with the wall side of the helmet to define the components in translation and rotation of the tilting movement of the visor relative to the helmet.
  • This notch 41 has a part in an arc 41a defining the rotational movement to bring the visor from its position retracted to its folded position, extended by a straight portion 41b almost radial towards the outside of the part in an arc 41a, of same width and orientation as the buttonhole, defining the translational movement to bring the visor closer to the helmet to ensure its docking when it is folded down.
  • the lateral attachment tab 32 of the visor also has a ovalized hole 43 for its mechanical drive by the crankpin 34 and a flange 44 for its attachment to the visor 3. As can be seen in FIG. 2, the flange 44 is screwed to an intermediate piece 45 riveted to the visor.
  • the crankpin 34 is screwed onto the end of the rod 24 of the axis of pivot thanks to a screw 46 so as to be integral in rotation with the latter like the toothed pinion 25. It has a main arm 47 which ends by a lug 48 for training which is turned towards the lateral attachment tab 32 and which struggles in the ovalized hole 42 and two auxiliary arms arranged star, one 49 for fixing a shell-shaped handle 4 allowing the crankpin 34 to be operated by hand, the other 50 for fixing a spring recalling the crankpin 34 in its extreme positrons of travel corresponding to the folded and retracted positions of the visor 3.
  • the tension spring recalling the crankpin 34 in its positions extremes is visible in Figures 4 to 6. It is a tension spring 51 bearing between a lug 52 of the auxiliary arm 50 of the crankpin 34 turned inward of lever 4 and a fixed pin 53 attached to the outer wall of the gearbox.
  • the handle 4 has a shell shape adapted to the shape of the palm with depressions 54 for the fingertips which makes it easy to manipulate blind.
  • Figure 4 shows, front views, the respective positions of the crankpin 34, side lug 32 of visor and spring traction 51 when the visor 3 is in the folded position.
  • the guide finger 42 is located at the straight end of the notch 41, the actuating lug 48 crankpin at the top of the ovalized hole 43 of the side lug 32 and the pivot axis 22 at the far left of the buttonhole hole 40, on the side of notch 41.
  • Figure 5 shows, still viewed from the front, the positions respective of the crankpin 34, the lateral attachment tab 32 and the spring of traction 51 when the visor is in an intermediate folded position but already moved away from the rim of the helmet.
  • the guide finger 42 is located at the junction of the rectilinear and circular parts of the notch 41, the lug of maneuver 48 of the crankpin at the base of the ovalized hole 43 of the lug lateral 32 and the pivot axis 22 at the extreme right of the buttonhole hole 40 on the side opposite notch 41.
  • Figure 6 shows, still viewed from the front, the respective positions crankpin 34, side lug 32 and tension spring 51 when the visor is in the retracted position above the face.
  • Finger guide 42 is at the end of the circular part of the notch 41, the lug 48 of the crank pin remaining at the base of the ovalized hole 43 and pivot axis 22 to the far right of the buttonhole hole 40 on the opposite side at notch 41.
  • crank pin 34 When a rotational movement is imposed manually on the lever 4, it drives the crank pin 34 and the toothed pinion 25 in rotation.
  • the crankpin 34 causes the lateral attachment tab 32 to tilt and therefore of the visor 3 according to a complex movement of rotation and translation determined by guiding the finger 42 in the notch 41 while that the toothed pinion 25 moves the rack 26 driving the cable in translation in its sheath 27.
  • the cable moves the rack on the other joint which then rotates the toothed pinion and the crankpin on the other joint which is then actuated in synchronism without the need to use his controller.

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  • Helmets And Other Head Coverings (AREA)
  • Pivots And Pivotal Connections (AREA)

Description

La présente invention concerne une fixation articulée pour visière de casque manoeuvrable d'une seule main tout en permettant un basculement de la visière par rapport au casque depuis une position rabattue sur le visage jusqu'à une position relevée découvrant le visage et inversement selon un mouvement complexe débutant par une translation éloignant la visière du casque afin de la dégager d'un éventuel joint ou rebord et se poursuivant jusqu'en position relevée par une rotation escamotant la visière au-dessus du visage.The present invention relates to an articulated fixing for a visor helmet that can be operated with one hand while allowing tilting of the visor relative to the helmet from a position folded over the face to a raised position revealing the face and inversely according to a complex movement starting with a translation moving the visor away from the helmet in order to release it from a possible seal or ledge and continuing to the raised position with a rotation retracting the visor above the face.

Les casques à visière servent à la protection de la tête d'un pilote en cas de choc. Le casque protège le crâne tandis que la visière protège le visage et sert au confort visuel en ambiance agressive : vent, poussière, lumière, brouillard... et, éventuellement à la protection én ambiance chimique agressive. Dans ce dernier cas, I'étanchéité doit être assurée entre la coque du casque et la visière en position rabattue. Cela nécessite la présence d'un joint périphérique et impose à la visière un accostage frontal entraínant pour cette dernière un mouvement de basculement qui ne se limite pas à une simple rotation et qui ne peut plus être obtenu par une manipulation directe de la visière car une telle manipulation imposerait au pilote un mouvement complexe nécessitant les deux mains.Visor helmets are used to protect the head of a pilot in the event of an impact. The helmet protects the skull while the visor protects the face and is used for visual comfort in an aggressive atmosphere: wind, dust, light, fog ... and possibly protection of the environment aggressive chemical. In the latter case, sealing must be ensured between the helmet shell and the visor in the folded position. This requires the presence of a peripheral seal and imposes a frontal docking on the visor causing the latter a tilting movement that does not not limited to a simple rotation and which can no longer be obtained by a direct manipulation of the visor because such manipulation would require the controls a complex movement requiring both hands.

De plus certains casques sont équipés d'un viseur de casque qui est un système optique de projection d'image utilisant une zone semi-réfléchissante de la visière en position rabattue pour afficher devant les yeux du pilote des symboles d'aide à la conduite. Cela nécessite un réglage très précis et une excellente reproductibilité de la position de la visière par rapport aux autres éléments optiques portés par le casque.In addition, some helmets are equipped with a helmet sight which is an optical image projection system using a semi-reflecting area visor in the folded position to display in front of the eyes of the driver's driving aid symbols. This requires very precise and excellent reproducibility of the visor position by compared to the other optical elements worn by the helmet.

Il est connu, notamment par la demande de brevet européen EP-A 88344, de réaliser des articulations donnant à la visière d'un casque un mouvement de basculement complexe débutant, en position rabattue, par une translation éloignant la visière du casque afin de la dégager d'un rebord et se poursuivant jusqu'en position relevée par une rotation escamotant la visière au-dessus du visage. Mais ces articulations nécessitent d'être actionnées par des moteurs électriques individuels. Cela les rend encombrantes et oblige à équiper le casque d'une batterie ce qui l'alourdit et complique sa maintenance.It is known, in particular by the European patent application EP-A 88344, to produce articulations giving to the visor of a helmet a complex tilting movement starting, in the folded position, by a translation moving the visor away from the helmet in order to release it from a rim and continuing to the raised position by a rotation retracting the visor above the face. But these joints need to be powered by individual electric motors. That makes them bulky and requires to equip the helmet with a battery which weighs it down and complicates its maintenance.

Un dispositif comprenant les caractéristiques du préambule de la revendication 1 est connu du WO-A-87/04323. A device comprising the characteristics of the preamble of the claim 1 is known from WO-A-87/04323.

La présente invention a pour but une fixation articulée d'une visière sur un casque qui imprime à la visière un mouvement de basculement complexe à base de translation et de rotation, et qui soit manoeuvrable directement par le porteur du casque, d'une seule main, par simple rotation d'une manette, sans nécessiter l'assistance de moteurs électriques.The object of the present invention is an articulated fixing of a visor on a helmet which gives the visor a movement of complex tilting based on translation and rotation, and which is can be operated directly by the helmet wearer, with one hand, by simple rotation of a joystick, without requiring motor assistance electric.

Elle a également pour but une fixation articulée d'une visière sur un casque qui soit à la fois simple, fiable, et peu coûteuse.It also aims at an articulated fixing of a visor on a helmet that is simple, reliable, and inexpensive.

Elle a pour objet une paire d'articulations à manoeuvres synchronisées pour la fixation d'une visière escamotable sur un casque qui comportent chacune :

  • un axe de pivot pivotant autour d'un axe solidaire de la paroi latérale du casque ;
  • une patte d'attache latérale de la visière enfilée sur l'axe de pivot grâce à un trou en forme de boutonnière dont la largeur autorise, en sus d'un mouvement de rotation, un débattement de la visière en translation par rapport au casque et pourvue d'une encoche en forme de came dans laquelle coulisse un doigt solidaire de la paroi latérale du casque pour guider en translation et en rotation la visière au cours de son basculement par rapport au casque ;
  • un maneton rotatif fixé à l'axe de pivot venant en prise dans un trou ovalisé de la patte d'attache de manière à entraíner, par son mouvement de rotation avec l'axe de pivot, le basculement de ladite patte d'attache ;
  • une manette fixée audit maneton sur l'extérieur de l'articulation pour permettre sa rotation à la main ; et
  • des moyens de rappel élastique rappelant le maneton dans les positions extrêmes de sa plage de débattement en rotation ;
et qui sont couplées par des moyens mécaniques de synchronisation synchronisant les mouvements de leurs manetons.It relates to a pair of articulations with synchronized maneuvers for the fixing of a retractable visor on a helmet which each include:
  • a pivot axis pivoting about an axis integral with the side wall of the helmet;
  • a side fastening tab for the visor threaded onto the pivot axis through a hole in the form of a buttonhole whose width allows, in addition to a rotational movement, a movement of the visor in translation relative to the helmet and provided with a cam-shaped notch in which slides a finger integral with the side wall of the helmet to guide the visor in translation and in rotation during its tilting relative to the helmet;
  • a rotary crankpin fixed to the pivot axis engaging in an ovalized hole in the fastening tab so as to cause, by its rotary movement with the pivot axis, the tilting of said fastening tab;
  • a handle fixed to said pin on the outside of the joint to allow its rotation by hand; and
  • elastic return means recalling the crankpin in the extreme positions of its range of rotation travel;
and which are coupled by mechanical synchronization means synchronizing the movements of their crankpins.

Avantageusement; les moyens mécaniques de synchronisation comportent : un câble qui coulisse dans une gaine reliant les deux articulations en suivant le contour de la coque du casque et qui est équipé à ses deux extrémités d'une crémaillère, et deux pignons dentés solidaires des axes de pivot et des manetons des articulations qui s'engrènent avec les crémaillères de manière qu'un mouvement de rotation d'un maneton entraíne un coulissement du câble dans sa gaine et un mouvement de rotation identique de l'autre maneton. Les pignons et les crémaillères sont alors montés dans des boítes d'engrenage logées à la base de chaque articulation.Advantageously; mechanical means of synchronization include: a cable which slides in a sheath connecting the two joints following the outline of the helmet shell and which is equipped with its two ends of a rack, and two toothed pinions integral with the pivot pins and crank pins of the joints that mesh with the racks so that a rotational movement of a crankpin causes the cable to slide in its sheath and a movement of identical rotation of the other crankpin. The pinions and racks are then mounted in gear boxes housed at the base of each joint.

Avantageusement, les manettes ont la forme d'une coquille présentant sur sa face extérieure des dépressions facilitant leur préhension.Advantageously, the handles have the shape of a shell having on its outer face depressions facilitating their gripping.

D'autres caractéristiques et avantages de l'invention ressortiront de la description d'un mode de réalisation donné à titre d'exemple. Cette description sera faite ci-après en regard du dessin dans lequel :

  • une figure 1 représente un casque de pilote équipé d'une paire d'articulations conformes à l'invention ;
  • une figure 2 représente, en perspective démontée, une platine support de viseur de casque qui est destinée à être attachée à l'intérieur de la coque du casque, les articulations de fixation de la visière et un viseur de casque qui viennent se monter sur la platine ;
  • une figure 3 représente, en perspective démontée, une articulation de fixation de la visière au casque conforme à l'invention ; et
  • des figures 4, 5 et 6 représentent, vues de face, les positions respectives des pièces principales d'une articulation au cours des différentes phases du mouvement de basculement de la visière.
Other characteristics and advantages of the invention will emerge from the description of an embodiment given by way of example. This description will be made below with reference to the drawing in which:
  • FIG. 1 represents a pilot helmet equipped with a pair of articulations in accordance with the invention;
  • 2 shows, in disassembled perspective, a helmet visor support plate which is intended to be attached to the inside of the helmet shell, the visor fixing joints and a helmet visor which are mounted on the platinum;
  • FIG. 3 represents, in disassembled perspective, an articulation for fixing the visor to the helmet according to the invention; and
  • Figures 4, 5 and 6 show, front views, the respective positions of the main parts of a joint during the different phases of the tilting movement of the visor.

Comme on peut le voir sur la figure 1 le casque présente une coque 1 de protection enveloppant le crâne à l'exception du visage. Cette coque 1 est fermée à l'avant par un carénage 2 dans sa partie inférieure et par une visière 3 dans sa partie supérieure. La visière 3 est articulée latéralement à la coque 1 du casque de manière à pouvoir être abaissée ou relevée, la manoeuvre de la visière s'effectuant par l'intermédiaire d'une manette 4 coiffant chaque articulation.As can be seen in Figure 1 the helmet has a protective shell 1 enveloping the skull with the exception of the face. This shell 1 is closed at the front by a fairing 2 in its lower part and by a visor 3 in its upper part. The visor 3 is articulated laterally to the shell 1 of the helmet so that it can be lowered or raised, the visor being operated by means of a lever 4 covering each joint.

La coque 1 du casque renferme, comme le montre la figure 2, une platine 5 en forme d'arceau qui supporte un tube générateur d'image 6 associé à un système optique de projection d'image 7 sur une zone semi-réfléchissante de la visière et les articulations 8 de fixation de la visière 3.The shell 1 of the helmet contains, as shown in FIG. 2, a hoop-shaped plate 5 which supports an image-generating tube 6 associated with an optical image projection system 7 on a semi-reflecting area of the visor and the hinges 8 for fixing the visor 3.

Le tube générateur d'image 6 et le système optique associé 7 se montent sur la platine 5 grâce à des pattes 10, 11 s'emboítant sur des languettes placées l'une 12 au sommet de la platine 5, l'autre 13 au dos du support d'une articulation 8.The image generator tube 6 and the associated optical system 7 are mount on the plate 5 by means of lugs 10, 11 fitting onto tabs placed one 12 at the top of the plate 5, the other 13 on the back of the articulation support 8.

Les articulations 8 de fixation de la visière 3 au casque sont montées aux extrémités de l'arceau de la platine 5, à hauteur des tempes du porteur du casque et réunies entre elles par un câble gainé 9 de synchronisation de mouvement.The joints 8 for attaching the visor 3 to the helmet are mounted at the ends of the arch of the plate 5, at the temples wearing a helmet and joined together by a sheathed cable 9 of motion synchronization.

La fixation de la visière 3 à la coque 1 du casque par l'intermédiaire de la platine 5 et non directement permet de réunir en un ensemble à part les différents éléments du module de visualisation dont fait partie la zone semi-réfléchissante de la visière 3. Cela facilite les réglages des positionnements respectifs des éléments du système optique de projection d'image, évite les problèmes posés par le manque dé rigidité de la coque 1 du casque sur la stabilité du réglage des positions relatives de la visière et des autres éléments du système optique de projection d'image et simplifie la maintenance du viseur de casque.Attaching the visor 3 to the shell 1 of the helmet by via plate 5 and not directly allows to unite in a together apart from the different elements of the viewing module which actually part of the semi-reflective area of the visor 3. This facilitates adjustments the respective positions of the elements of the optical system of image projection, avoids the problems posed by the lack of rigidity of the helmet shell 1 on the stability of the adjustment of the relative positions of the visor and other elements of the optical image projection system and simplifies maintenance of the helmet visor.

Chaque extrémité de l'arceau de la platine 5 se termine sensiblement à la verticale par une oreille 20 percée d'un trou médian 21 pour un axe de pivot horizontal 22 présentant une tête circulaire aplatie 23 prolongée par une tige 24. L'axe de pivot 22 est enfilé dans le trou 21 de l'oreille 20 par l'intérieur. Sa tête circulaire 23 vient se plaquer contre la paroi arrière de l'oreille 20 tandis que sa tige 24 dépasse à l'horizontale de la paroi avant de l'oreille dans une boíte d'engrenage.Each end of the arch of the plate 5 ends substantially vertically by an ear 20 pierced with a median hole 21 for a horizontal pivot axis 22 having a flattened circular head 23 extended by a rod 24. The pivot axis 22 is threaded into the hole 21 of the ear 20 from the inside. Its circular head 23 is pressed against the rear wall of the ear 20 while its rod 24 protrudes horizontally from the front wall of the ear in a gearbox.

Sur la tige 23 de l'axe de pivot vient s'enfiler un pignon denté 25 visible sur la figure 3 . Ce pignon denté 25 est solidaire en rotation de l'axe de pivot 22 grâce à des cannelures de profils complémentaires pratiquées à la surface de la tige 23 de l'axe de pivot et à l'intérieure de son alésage .Il se loge dans la boíte à engrenage en compagnie d'une crémaillère 26 sur laquelle il s'engrène. La crémaillère 26, qui est animée d'un mouvement de va et vient, est attachée à la crémaillère de l'autre articulation au moyen d'un câble coulissant dans une gaine 9 reliant les boítes d'engrenage des deux articulations.On the rod 23 of the pivot axis comes a threaded pinion 25 visible in figure 3. This toothed pinion 25 is integral in rotation with the axis pivot 22 by means of grooves of complementary profiles made at the surface of the rod 23 of the pivot axis and inside its bore. lodged in the gearbox with a rack 26 on which it meshes with. The rack 26, which is animated by a movement of back and forth, is attached to the rack of the other joint by means of a cable sliding in a sheath 9 connecting the gear boxes of the two joints.

Pour obtenir des mouvements de même sens des pignons dentés des deux articulations, l'une des crémaillères celle 26 montrée dans la figure 3, s'engrène à la base du pignon denté 25 tandis que l'autre crémaillère, celle non représentée, s'engrène au sommet du pignon denté. To obtain movements in the same direction of the toothed pinions of the two joints, one of the racks that 26 shown in the figure 3, meshes with the base of the toothed pinion 25 while the other rack, that not shown, meshes with the top of the toothed pinion.

Par-dessus le pignon denté 25 un couvercle 28 de boíte à engrenage vient s'enfiler sur l'axe de pivot 22 pour refermer la boíte à engrenage et assurer les maintiens en place du pignon 25 et de la crémaillère 26. Ce couvercle 28 présente extérieurement un prolongement tubulaire 29 servant d'axe d'articulation entouré d'un plateau annulaire 30 servant de portée à l'articulation.Above the toothed pinion 25 a cover 28 of the box gear is threaded on the pivot axis 22 to close the box gear and secure the pinion 25 and the rack 26. This cover 28 has an extension on the outside tubular 29 serving as a hinge axis surrounded by an annular plate 30 serving as a bearing for the joint.

Sur la partie tubulaire 29 du couvercle 28 de la boíte d'engrenage il vient tout d'abord une première rondelle 31, puis la deuxième pièce pivotante et coulissante de l'articulation qui sert de patte d'attache latérale 32 à la visière 3, une deuxième rondelle 33 et enfin un maneton 34 recouvert d'une manette 4.On the tubular part 29 of the cover 28 of the gearbox first comes a first washer 31, then the second piece swivel and slide of the joint that serves as a side attachment tab 32 at the visor 3, a second washer 33 and finally a crankpin 34 covered with a handle 4.

Les première et deuxième rondelles 31, 33 servent de cales d'épaisseur. Elles sont pelables. En ajustant leurs épaisseurs individuelles tout en leur conservant une épaisseur globale constante, on peut faire varier la position latérale de la patte d'attache 32 de la visière par rapport à la platine 5 pour un réglage transversal fin de la position de la visière par rapport au casque ce qui est utile pour le réglage des éléments du système optique de projection d'image.The first and second washers 31, 33 serve as shims thick. They are peelable. By adjusting their individual thicknesses while keeping them a constant overall thickness, we can vary the lateral position of the lug 32 of the visor relative to the plate 5 for fine transverse adjustment of the visor position by compared to the helmet which is useful for adjusting the system elements image projection optics.

La patte d'attache latérale 32 de la visière est enfilée sur le prolongement tubulaire 29 du couvercle 28 de la boíte d'engrenage entourant la tige de l'axe de pivot 22 grâce à un trou 40 en forme de boutonnière dont la largeur détermine l'amplitude du débattement en translation de la visière par rapport au casque. Elle est pourvue d'une encoche 41 en forme de came dans laquelle coulisse un doigt de guidage 42 fixé à la paroi extérieure de la boíte d'engrenage et solidaire de la paroi latérale du casque pour définir les composantes en translation et rotation du mouvement de basculement de la visière par rapport au casque. Cette encoche 41 présente une partie en arc de cercle 41a définissant le mouvement de rotation permettant d'amener la visière de sa position escamotée à sa position rabattue, prolongée par une partie rectiligne 41b presque radiale tournée vers l'extérieur de la partie en arc de cercle 41a, de même largeur et de même orientation que la boutonnière, définissant le mouvement de translation permettant de rapprocher la visière du casque pour assurer son accostage lorsqu'elle est rabattue. The lateral attachment tab 32 of the visor is threaded on the tubular extension 29 of the cover 28 of the gearbox surrounding the rod of the pivot axis 22 through a hole 40 in the form of buttonhole whose width determines the amplitude of the travel in translation of the visor relative to the helmet. It has a cam-shaped notch 41 in which a guide finger slides 42 fixed to the outer wall of the gearbox and integral with the wall side of the helmet to define the components in translation and rotation of the tilting movement of the visor relative to the helmet. This notch 41 has a part in an arc 41a defining the rotational movement to bring the visor from its position retracted to its folded position, extended by a straight portion 41b almost radial towards the outside of the part in an arc 41a, of same width and orientation as the buttonhole, defining the translational movement to bring the visor closer to the helmet to ensure its docking when it is folded down.

La patte d'attache latérale 32 de la visière présente en outre un trou ovalisé 43 pour son entraínement mécanique par le maneton 34 et une bride 44 pour sa fixation à la visière 3. Comme on peut le voir sur la figure 2, la bride 44 est vissée à une pièce intercalaire 45 rivetée à la visière.The lateral attachment tab 32 of the visor also has a ovalized hole 43 for its mechanical drive by the crankpin 34 and a flange 44 for its attachment to the visor 3. As can be seen in FIG. 2, the flange 44 is screwed to an intermediate piece 45 riveted to the visor.

Le maneton 34 est vissé sur l'extrémité de la tige 24 de l'axe de pivot grâce à une vis 46 de manière à être solidaire en rotation de ce dernier comme le pignon denté 25. Il possède un bras principal 47 qui se termine par un ergot 48 d'entraínement qui est tourné vers la patte d'attache latérale 32 et qui se débat dans le trou ovalisé 42 et deux bras auxiliaires disposés en étoile, l'un 49 pour la fixation d'une manette 4 en forme de coquille permettant la manoeuvre du maneton 34 à la main, l'autre 50 pour la fixation d'un ressort rappelant le maneton 34 dans ses positons extrêmes de débattement correspondant aux positions rabattue et escamotée de la visière 3.The crankpin 34 is screwed onto the end of the rod 24 of the axis of pivot thanks to a screw 46 so as to be integral in rotation with the latter like the toothed pinion 25. It has a main arm 47 which ends by a lug 48 for training which is turned towards the lateral attachment tab 32 and which struggles in the ovalized hole 42 and two auxiliary arms arranged star, one 49 for fixing a shell-shaped handle 4 allowing the crankpin 34 to be operated by hand, the other 50 for fixing a spring recalling the crankpin 34 in its extreme positrons of travel corresponding to the folded and retracted positions of the visor 3.

Le ressort de traction rappelant le maneton 34 dans ses positions extrêmes est visible sur les figures 4 à 6. C'est un ressort de traction 51 prenant appui entre un ergot 52 du bras auxiliaire 50 du maneton 34 tourné vers l'intérieur de la manette 4 et un pion fixe 53 attaché à la paroi extérieure de la boíte d'engrenage.The tension spring recalling the crankpin 34 in its positions extremes is visible in Figures 4 to 6. It is a tension spring 51 bearing between a lug 52 of the auxiliary arm 50 of the crankpin 34 turned inward of lever 4 and a fixed pin 53 attached to the outer wall of the gearbox.

La manette 4 a une forme de coquille adaptée à la forme de la paume de la main avec des dépressions 54 pour la pointe des doigts ce qui rend sa manipulation en aveugle aisée.The handle 4 has a shell shape adapted to the shape of the palm with depressions 54 for the fingertips which makes it easy to manipulate blind.

La figure 4 montre, vues de face, les positions respectives du maneton 34, de la patte d'attache latérale 32 de la visière et du ressort de traction 51 lorsque la visière 3 est en position rabattue. Le doigt de guidage 42 se trouve à l'extrémité rectiligne de l'encoche 41, l'ergot de manoeuvre 48 du maneton au sommet du trou ovalisé 43 de la patte d'attache latérale 32 et l'axe de pivot 22 à l'extrême gauche du trou en boutonnière 40, du coté de l'encoche 41.Figure 4 shows, front views, the respective positions of the crankpin 34, side lug 32 of visor and spring traction 51 when the visor 3 is in the folded position. The guide finger 42 is located at the straight end of the notch 41, the actuating lug 48 crankpin at the top of the ovalized hole 43 of the side lug 32 and the pivot axis 22 at the far left of the buttonhole hole 40, on the side of notch 41.

La figure 5 montre, toujours vues de face, les positions respectives du maneton 34, de la patte d'attache latérale 32 et du ressort de traction 51 lorsque la visière est dans une position intermédiaire rabattue mais déjà écartée du rebord du casque. Le doigt de guidage 42 se trouve à la jonction des parties rectiligne et circulaire de l'encoche 41, l'ergot de manoeuvre 48 du maneton à la base du trou ovalisé 43 de la patte d'attache latérale 32 et l'axe de pivot 22 à l'extrême droite du trou en boutonnière 40 du coté opposé à l'encoche 41.Figure 5 shows, still viewed from the front, the positions respective of the crankpin 34, the lateral attachment tab 32 and the spring of traction 51 when the visor is in an intermediate folded position but already moved away from the rim of the helmet. The guide finger 42 is located at the junction of the rectilinear and circular parts of the notch 41, the lug of maneuver 48 of the crankpin at the base of the ovalized hole 43 of the lug lateral 32 and the pivot axis 22 at the extreme right of the buttonhole hole 40 on the side opposite notch 41.

La figure 6 montre, encore vues de face, les positions respectives du maneton 34, de la patte d'attache latérale 32 et du ressort de traction 51 lorsque la visière est en position escamotée au-dessus du visage. Le doigt de guidage 42 se trouve à l'extrémité de la partie circulaire de l'encoche 41, l'ergot de manoeuvre 48 du maneton restant à la base du trou ovalisé 43 et l'axe de pivot 22 à l'extrême droite du trou en boutonnière 40 du coté opposé à l'encoche 41.Figure 6 shows, still viewed from the front, the respective positions crankpin 34, side lug 32 and tension spring 51 when the visor is in the retracted position above the face. Finger guide 42 is at the end of the circular part of the notch 41, the lug 48 of the crank pin remaining at the base of the ovalized hole 43 and pivot axis 22 to the far right of the buttonhole hole 40 on the opposite side at notch 41.

Lorsqu'un mouvement de rotation est imposé manuellement à la manette 4 , elle entraíne le maneton 34 et le pignon denté 25 en rotation. Le maneton 34 provoque le basculement de la patte d'attache latérale 32 et donc de la visière 3 selon un mouvement complexe de rotation et de translation déterminé par le guidage du doigt 42 dans l'encoche 41 tandis que le pignon denté 25 déplace la crémaillère 26 entraínant le câble en translation dans sa gaine 27. Le câble déplace la crémaillère de l'autre articulation qui fait alors tourner le pignon denté et le maneton de l'autre articulation qui est alors actionnée en synchronisme sans avoir besoin d'utiliser sa manette.When a rotational movement is imposed manually on the lever 4, it drives the crank pin 34 and the toothed pinion 25 in rotation. The crankpin 34 causes the lateral attachment tab 32 to tilt and therefore of the visor 3 according to a complex movement of rotation and translation determined by guiding the finger 42 in the notch 41 while that the toothed pinion 25 moves the rack 26 driving the cable in translation in its sheath 27. The cable moves the rack on the other joint which then rotates the toothed pinion and the crankpin on the other joint which is then actuated in synchronism without the need to use his controller.

Grâce à ce système d'articulations synchronisées actionnable d'une seule main, on obtient un mouvement complexe pour la visière permettant un accostage frontal de cette dernière sur le rebord du casque lorsqu'elle est rabattue sans que ces articulations présentent un encombrement notoirement plus important ou une difficulté de manoeuvre supérieure aux articulations traditionnelles n'autorisant qu'un mouvement de basculement par rotation.Thanks to this system of synchronized articulations which can be actuated with one hand, we obtain a complex movement for the visor allowing frontal docking of the latter on the rim of the helmet when it is folded down without these joints having a noticeably larger footprint or difficulty in maneuvering superior to traditional joints allowing only a movement of tilting by rotation.

Claims (5)

  1. Pair of synchronized hinges for securing a retractable visor (3) to a helmet, comprising:
    a pivot pin (22) pivoting about a pin secured to the side wall of the helmet, characterized in that each hinge comprises:
    a lateral tab (32) for attaching the visor (3) slipped over the pivot pin (22) thanks to a hole (40) in the shape of a buttonhole slot, the width of which, in addition to allowing a rotational movement, allows the visor (3) a translational travel with respect to the helmet (1) and which is provided with a cam-shaped notch (41) in which there slides a finger (42) secured to the side wall of the helmet to guide the translational and rotational movement of the visor (3) as it is pivoted with respect to the helmet;
    a rotary crank pin (34) fixed to the pivot pin (22) and engaging in an ovalsized hole (43) in the attachment tab (32) so that as it is rotated with the pivot pin (22) it causes the said attachment tab (32) to pivot;
    a knob (4) fixed to the said crank pin (34) on the outside of the hinge to allow it to be turned by hand; and
    elastic return means (51) returning the crank pin (34) to the limiting positions of its range of rotational travel;
    and in that the hinges are coupled by mechanical synchronizing means (25, 26, 27) that synchronize the movements of their crank pins (34).
  2. Pair of hinges according to Claim 1, characterized in that the mechanical synchronizing means comprise: a cable which slides in a sheath (9) connecting the two hinges following around the contour of the shell (1) of the helmet and which is equipped at its ends with a rack (26) and two pinions (25) secured to the pivot pins (22) and the crank pins (34) of the hinges which mesh with the racks (26) in such a way that a rotational movement of one crank pin (34) causes the cable to slide in its sheath (27) and causes an identical rotational movement of the other crank pin.
  3. Pair of hinges according to Claim 1, characterized in that the said pinions (25) and racks (26) are mounted in a gearbox housed at the base of each hinge.
  4. Pair of hinges according to Claim 1, characterized in that the said knob (4) is in the shape of a shell which on its outer face has indentations for the fingertips, making it easier to grip.
  5. Pair of hinges according to Claim 1, characterized in that the said elastic return means returning the crank pin (34) to the limiting positions in its range of rotational travel comprise a tension spring (51) attached between a stud (54) of an auxiliary arm of the crank pin (34) and a stationary peg (53) secured to the side wall of the helmet.
EP95402088A 1994-09-20 1995-09-15 Pair of synchronized hinges for securing a retractable visor on a helmet Expired - Lifetime EP0702906B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9411176 1994-09-20
FR9411176A FR2724541B1 (en) 1994-09-20 1994-09-20 PAIR OF SYNCHRONIZED MANEUVER JOINTS FOR FIXING A RETRACTABLE VISOR ON A HELMET

Publications (2)

Publication Number Publication Date
EP0702906A1 EP0702906A1 (en) 1996-03-27
EP0702906B1 true EP0702906B1 (en) 1998-11-18

Family

ID=9467078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95402088A Expired - Lifetime EP0702906B1 (en) 1994-09-20 1995-09-15 Pair of synchronized hinges for securing a retractable visor on a helmet

Country Status (7)

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US (1) US5604930A (en)
EP (1) EP0702906B1 (en)
JP (1) JPH08170212A (en)
CA (1) CA2158620A1 (en)
DE (1) DE69506067T2 (en)
FR (1) FR2724541B1 (en)
IL (1) IL115326A (en)

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FI982681A0 (en) * 1998-12-11 1998-12-11 Arimo Ristola Mounting arrangement for attaching guards to the helmet
FR2817713B1 (en) * 2000-12-12 2003-11-28 Thomson Csf FAST-DAY / NIGHT FOLDABLE VISOR HELMETS
JP3875650B2 (en) * 2002-07-30 2007-01-31 株式会社アライヘルメット Support structure of mouse shutter in full face helmet
US7895678B2 (en) * 2007-08-06 2011-03-01 Bell Sports, Inc. Helmet with improved shield mount and precision shield control
US8214920B1 (en) * 2008-02-18 2012-07-10 Sperian Eye & Face Protection, Inc. Hard hat adapter for a welding helmet
US8291513B2 (en) * 2009-04-18 2012-10-23 Stephen John Prinkey Counter balanced, hands free, self positioning, protective shield
DE102010027015A1 (en) * 2010-07-13 2012-01-19 Anton Pfanner Face shield for attachment to a protective helmet, in particular for forestry workers
WO2012037681A1 (en) 2010-09-20 2012-03-29 Revision Military S.A.R.L. Helmet attachment mechanism for visor
US8813270B2 (en) * 2011-07-26 2014-08-26 Vladimiro Pizzi Helmet with flush aligned shield when closed
ITVR20120022A1 (en) * 2012-02-20 2013-08-21 Agv Spa HANDLING DEVICE FOR A HELMET TO MOVE A FIRST ELEMENT OF THE HELMET COMPARED TO A SECOND HELMET ELEMENT.
US8701212B2 (en) 2012-09-26 2014-04-22 3M Innovative Properties Company Elongated guide, and visor removably mountable thereto
US9775397B2 (en) 2013-03-15 2017-10-03 3M Innovative Properties Company Elongated guide, and visor removably mountable thereto
US11134741B2 (en) * 2017-05-25 2021-10-05 E.D. Bullard Company Protective helmet with a retractable and removable visor
US10786032B2 (en) * 2019-01-18 2020-09-29 Cookie Composites Group Pty Ltd. Skydiving helmet and visor mounting system
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Also Published As

Publication number Publication date
JPH08170212A (en) 1996-07-02
DE69506067D1 (en) 1998-12-24
DE69506067T2 (en) 1999-06-10
FR2724541A1 (en) 1996-03-22
CA2158620A1 (en) 1996-03-21
IL115326A (en) 1998-06-15
EP0702906A1 (en) 1996-03-27
IL115326A0 (en) 1995-12-31
US5604930A (en) 1997-02-25
FR2724541B1 (en) 1996-12-06

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