EP3056248A1 - Descender device on rope with gear reduction and panic lock - Google Patents

Descender device on rope with gear reduction and panic lock Download PDF

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Publication number
EP3056248A1
EP3056248A1 EP15200227.5A EP15200227A EP3056248A1 EP 3056248 A1 EP3056248 A1 EP 3056248A1 EP 15200227 A EP15200227 A EP 15200227A EP 3056248 A1 EP3056248 A1 EP 3056248A1
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EP
European Patent Office
Prior art keywords
lever
cam
rope
flange
transmission means
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.)
Granted
Application number
EP15200227.5A
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German (de)
French (fr)
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EP3056248B1 (en
Inventor
Michael Chaumontet
Julien Moine
Christophe Quillard
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Zedel SAS
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Zedel SAS
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Publication of EP3056248A1 publication Critical patent/EP3056248A1/en
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Publication of EP3056248B1 publication Critical patent/EP3056248B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
    • A62B1/10—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys mechanically operated
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00—Devices for lowering persons from buildings or the like
    • A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/14—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brakes sliding on the rope
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B29/00—Apparatus for mountaineering
    • A63B29/02—Mountain guy-ropes or accessories, e.g. avalanche ropes; Means for indicating the location of accidentally buried, e.g. snow-buried, persons

Definitions

  • the figure 1 represents a self-locking rope insurance device described in detail in the document EP 2301631 . It comprises a cam-shaped pulley 10 arranged to cause a locking of the rope when the rope is under tension, and a control lever 11 cooperating with the cam 10 to cause a progressive release of the rope following a manual action on the lever 11 in the direction of the arrow F.
  • the lever 11 acts on the cam 10 respectively with a multiplied effect in an initial part of its release stroke, and with a direct drive effect in a final part of its stroke.
  • the relative displacement of the cam 10 relative to the displacement of the lever 11 is lower in the initial part of the race than in the final part, which allows a precise adjustment of the braking force and the speed of movement of the rope in the initial portion of the stroke of the lever 11.
  • the cam 10 is articulated on an axis 12 of a flange 13 fixed, and the lever 11 control is articulated by an axis 14 on the cam 10.
  • the lever 11 comprises a bearing pin 15 intended to come into contact against a stop 16 of the flange 13, said stop being located between the hinge pins 12, 14 of the respective cam 10 and lever 11 when the latter is turned in the direction of release. From this position, if the user pulls on the lever 11 in the unlocking clockwise direction, the cam 10 is urged clockwise with a reduced effort. By spending little energy, the user can exert a major effort on the cam 10 to overcome the effort required to unlock the rope, and then finely adjust the position of the cam 10 to modulate the tightening of the rope and thus settle finely the speed of scrolling of the
  • the figure 1 represents the chute in a release position, obtained when the user continues to pull the lever 11 clockwise.
  • the lug 15 disengages from the abutment 16 and bears against a wall of the cam 10.
  • the lever 11 is found in a configuration without reduction of the drive, causing a direct and rapid displacement of the cam 14 to the position end of release stroke.
  • the cam 10 no longer blocks the rope as long as the lever 11 is held in this position by the user.
  • the lug 15 of the lever 11 remains in abutment on the cam 10 by establishing a permanent mechanical connection between the cam 10 and the lever 11. If the user is panicked during an uncontrolled descent along the rope, it may cling to the lever 11 by pulling strongly down. The rope is free, and the user can not stop at the expense of his safety.
  • the antipanic function is known per se on conventional self-braking descenders as illustrated in the documents EP 2777772 and EP 2018894 , but not on a descending insurer with gear ratio for unlocking the cam.
  • the object of the invention is to provide a rope descender insurer device, which can be easily unlocked manually to improve the fluidity of the descent along the rope, and benefiting from an automatic reblocking function in case of panic. 'user.
  • control lever comprises transmission means cooperating with a guide ramp of the flange to interrupt the mechanical connection with the cam after passing an intermediate position of the lever, causing the exhausting said ramp out of the reduction zone, and that the end of the flange guide ramp corresponds to the anti-panic position of the transmission means, allowing automatic locking of the cam as soon as the reduction zone is exceeded .
  • the transmission means comprise a drive rod articulated to the lever, and slidable along the guide ramp in said reduction zone for unlocking the cam.
  • the transmission means are provided with a drive shaft integral with the lever, and cooperating with a pawl pivotally mounted on an axis of the flange, said pawl being pushed by the drive shaft against the guide ramp during the reduction zone to initiate the drive of the cam in the unlocking direction.
  • the axis is configured to escape the clique in the intermediate anti-panic position.
  • an over-travel of the lever in the unlocking direction beyond the intermediate position restores the mechanical connection with the cam, and drives it directly without reduction.
  • the anti-panic function is manually reset by moving the control lever in the opposite direction to replace the transmission means in their original position on the side of the guide rail.
  • the flange 13 is provided with a recess 23 allowing the passage of the rod 20 when it moves along the ramp 21 of guiding after actuation of the lever 11 in the unlocking direction.
  • the recess 23 is delimited at its upper part by the guide ramp 21.
  • the cam 10 has a first orifice 24 for the passage of the axis 12 fixed in a hole 26 of the flange 13, and a second orifice 25 for mounting of the axis 14 of articulation of the control lever 11.
  • a second flange 27 is arranged opposite the first flange 13, and cooperates with a spacer 28 to hold the rope in place.
  • the second flange 27 can be fixed or tilting.
  • the cam 10 presses the rope against a braking surface 29, which is provided on a stud 30 inserted and fixed by a screw 31 between the two flanges 13, 27.
  • the two flanges 13, 27 are provided holes 33, 34 for hooking a carabiner attachment (not shown).
  • the figure 3 shows the descender on the side of the cam 10, after the installation of a rope 32.
  • the cam 10 is eccentrically mounted on the axis 12, and is shaped into a pulley around which is wound a loop of the rope 32.
  • FIGS. 4A and 4B represent the control lever 11 equipped with the drive rod 20, which can pivot about its axis 22.
  • the latter is threaded into a blind hole of the lever 11, in the vicinity of the circular hole 35 for the passage of the axis 14 of the lever 11.
  • a torsion spring 36 ( figure 2 ) is threaded coaxially on the axis 14 inside the orifice 35 to bias the cam 10 to the unlocking position.
  • the user unfolds the lever 11 by rotating it clockwise.
  • the link 20 bears on the ramp 21 which defines the reduction zone for driving the cam 10 in the unlocking direction with a reduced effort.
  • the rotation of the lever 11 causes the cam 10 to rotate in a predetermined ratio, for example 1/3.
  • FIGs 9 to 12 represent the various phases of manual reset to reactivate the antipanic function after the escape of the rod 20. It is sufficient to turn the lever 11 counterclockwise indicated by the arrow R ( figure 9 ), causing pivoting of the link 20 about its axis 22 when it bears on the flange 13 ( figure 10 ). On the figure 11 , the link 20 retracts by crossing the nose 38 of the flange 13, and returns to move into the original position inside the ramp 21 of the flange 13 by means of a spiral spring (see figure 12 ).
  • FIGS 13 to 19 show a second embodiment of an insurer descender D2 according to the invention. Most of the parts are identical with the same reference numbers, only the means of implementation of the anti-panic function are different from those of the aforementioned device D1.
  • the link 20 of the device D1 Figures 2-12 is replaced by a drive shaft 50 integral with the lever 11, said axis being intended to cooperate with a pawl 51 pivotally mounted on an axis 52 of the flange 13.
  • the pawl 51 is preferably made of stainless steel, allowing contact with the axis 50 with high endurance.
  • the shaft 50 pushes the pawl 51 bearing against the ramp 21 of the flange 13 to initiate the drive of the cam 10 in the unlocking direction.
  • the axis 50 is advantageously surrounded by a tube, for example stainless steel, to improve the sliding of the axis 50 on the pawl 51.
  • the recovery zone forces between the pawl 51 and the ramp 21 of the flange 13 allows a releasable release of the cam 10 when the descender D2 is under load.
  • the anti-panic function is reset by moving the lever 11 in the opposite direction to return the drive shaft 50 to its original position by virtue of the spring-mounted pawl 51. It suffices to return the lever 11 in the counterclockwise direction of the arrow R. At the beginning of rearming, the reaction of the axis 50 on the curved face of the pawl 51 causes it to be erased ( Figures 17 and 18 ). The drive shaft 50 of the lever 11 can thus return to its original position ( figure 19 ), with the anti-panic reset.

Abstract

Dispositif assureur descendeur pour corde comprenant une came (10) montée rotative sur un flasque (13) fixe, pour assurer un blocage de la corde (32) lorsque ladite corde est sous tension, et un levier (11) articulé sur la came (10) pour assurer un déblocage progressif de la corde avec un effet démultiplié au début de la course de déblocage du levier (11). Le levier (11) de commande comporte des moyens de transmission coopérant avec une rampe de guidage (21) du flasque (13) pour interrompre la liaison mécanique avec la came (10) après dépassement d'une position intermédiaire du levier, entraînant l'échappement de ladite rampe (21) hors de la zone de démultiplication. L'extrémité de la rampe de guidage (21) du flasque (13) correspond à la position anti-panique des moyens de transmission, permettant un blocage automatique de la came (10) dès que la zone de démultiplication est dépassée.Faller insulator device for a rope comprising a cam (10) rotatably mounted on a fixed flange (13), for locking the rope (32) when said rope is under tension, and a lever (11) articulated on the cam (10). ) to ensure a progressive release of the rope with a multiplied effect at the beginning of the lever release stroke (11). The control lever (11) comprises transmission means cooperating with a guide ramp (21) of the flange (13) to interrupt the mechanical connection with the cam (10) after passing an intermediate position of the lever, causing the exhausting said ramp (21) out of the reduction zone. The end of the guide ramp (21) of the flange (13) corresponds to the anti-panic position of the transmission means, allowing automatic locking of the cam (10) as soon as the reduction zone is exceeded.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention concerne un dispositif assureur descendeur pour corde comprenant :

  • une came montée rotative sur un flasque fixe pour assurer un blocage de la corde lorsque ladite corde est sous tension,
  • un levier) ou poignée de commande articulé sur la came pour provoquer un déblocage progressif de la corde avec un effet démultiplié au début de la course de déblocage du levier.
The invention relates to a rope descender device comprising:
  • a cam mounted rotatably on a fixed flange to ensure a locking of the rope when said rope is under tension,
  • a lever) or control handle articulated on the cam to cause a progressive unlocking of the rope with a multiplied effect at the beginning of the release stroke of the lever.

Etat de la techniqueState of the art

La figure 1 représente un dispositif d'assurance autobloquant pour corde décrit en détail dans le document EP 2301631 . Il comprend une poulie en forme de came 10 agencée pour provoquer un blocage de la corde lorsque la corde est sous tension, et un levier 11 de commande coopérant avec la came 10 afin de provoquer un déblocage progressif de la corde suite à une action manuelle sur le levier 11 dans le sens de la flèche F. Le levier 11 agit sur la came 10 respectivement avec un effet démultiplié dans une partie initiale de sa course de déblocage, et avec un effet d'entraînement direct dans une partie finale de sa course. Le déplacement relatif de la came 10 par rapport au déplacement du levier 11 est plus faible dans la partie initiale de la course que dans la partie finale, ce qui permet un réglage précis de l'effort de freinage et de la vitesse de défilement de la corde dans la partie initiale de la course du levier 11. La came 10 est articulée sur un axe 12 d'un flasque 13 fixe, et le levier 11 de commande est articulé par un axe 14 sur la came 10. Le levier 11 comporte un ergot d'appui 15 destiné à venir en contact contre une butée 16 du flasque 13, ladite butée étant située entre les axes d'articulation 12, 14 respectifs de la came 10 et du levier 11 lorsque ce dernier est tourné dans le sens du déblocage. A partir de cette position, si l'utilisateur tire sur le levier 11 dans le sens horaire de déblocage, la came 10 est sollicitée dans le sens horaire avec un effort démultiplié. En dépensant peu d'énergie, l'utilisateur peut exercer un effort important sur la came 10 pour franchir l'effort nécessaire à débloquer la corde, et ensuite ajuster finement la position de la came 10 pour moduler le serrage de la corde et ainsi régler finement la vitesse de défilement de la corde.The figure 1 represents a self-locking rope insurance device described in detail in the document EP 2301631 . It comprises a cam-shaped pulley 10 arranged to cause a locking of the rope when the rope is under tension, and a control lever 11 cooperating with the cam 10 to cause a progressive release of the rope following a manual action on the lever 11 in the direction of the arrow F. The lever 11 acts on the cam 10 respectively with a multiplied effect in an initial part of its release stroke, and with a direct drive effect in a final part of its stroke. The relative displacement of the cam 10 relative to the displacement of the lever 11 is lower in the initial part of the race than in the final part, which allows a precise adjustment of the braking force and the speed of movement of the rope in the initial portion of the stroke of the lever 11. The cam 10 is articulated on an axis 12 of a flange 13 fixed, and the lever 11 control is articulated by an axis 14 on the cam 10. The lever 11 comprises a bearing pin 15 intended to come into contact against a stop 16 of the flange 13, said stop being located between the hinge pins 12, 14 of the respective cam 10 and lever 11 when the latter is turned in the direction of release. From this position, if the user pulls on the lever 11 in the unlocking clockwise direction, the cam 10 is urged clockwise with a reduced effort. By spending little energy, the user can exert a major effort on the cam 10 to overcome the effort required to unlock the rope, and then finely adjust the position of the cam 10 to modulate the tightening of the rope and thus settle finely the speed of scrolling of the rope.

La figure 1 représente le descendeur dans une position de dégagement, obtenue lorsque l'utilisateur continue à tirer sur le levier 11 dans le sens horaire. L'ergot 15 se désengage de la butée 16 et vient en appui sur une paroi de la came 10. Le levier 11 se retrouve dans une configuration sans démultiplication de l'entraînement, provoquant un déplacement direct et rapide de la came 14 vers la position de fin de course de déblocage. La came 10 ne bloque plus la corde aussi longtemps que le levier 11 est maintenu dans cette position par l'utilisateur. On remarque que l'ergot 15 du levier 11 reste en appui sur la came 10 en établissant une liaison mécanique permanente entre la came 10 et le levier 11. Si l'utilisateur est pris de panique lors d'une descente non contrôlée le long de la corde, il risque de s'agripper au levier 11 en le tirant fortement vers le bas. La corde est libre, et l'utilisateur ne pourra pas s'arrêter au détriment de sa sécurité.The figure 1 represents the chute in a release position, obtained when the user continues to pull the lever 11 clockwise. The lug 15 disengages from the abutment 16 and bears against a wall of the cam 10. The lever 11 is found in a configuration without reduction of the drive, causing a direct and rapid displacement of the cam 14 to the position end of release stroke. The cam 10 no longer blocks the rope as long as the lever 11 is held in this position by the user. Note that the lug 15 of the lever 11 remains in abutment on the cam 10 by establishing a permanent mechanical connection between the cam 10 and the lever 11. If the user is panicked during an uncontrolled descent along the rope, it may cling to the lever 11 by pulling strongly down. The rope is free, and the user can not stop at the expense of his safety.

La fonction antipanique est connue en soi sur des descendeurs autofreinants classiques comme illustrés dans les documents EP 2777772 et EP 2018894 , mais pas sur un assureur descendeur avec démultiplication pour le déblocage de la came.The antipanic function is known per se on conventional self-braking descenders as illustrated in the documents EP 2777772 and EP 2018894 , but not on a descending insurer with gear ratio for unlocking the cam.

Objet de l'inventionObject of the invention

L'objet de l'invention consiste à réaliser un dispositif assureur descendeur sur corde, pouvant être facilement débloqué manuellement pour améliorer la fluidité de la descente le long de la corde, et bénéficiant d'une fonction automatique de reblocage en cas de panique de l'utilisateur.The object of the invention is to provide a rope descender insurer device, which can be easily unlocked manually to improve the fluidity of the descent along the rope, and benefiting from an automatic reblocking function in case of panic. 'user.

L'appareil selon l'invention est caractérisé en ce que le levier de commande comporte des moyens de transmission coopérant avec une rampe de guidage du flasque pour interrompre la liaison mécanique avec la came après dépassement d'une position intermédiaire du levier, entraînant l'échappement de ladite rampe hors de la zone de démultiplication, et que l'extrémité de la rampe de guidage du flasque correspond à la position anti-panique des moyens de transmission, permettant un blocage automatique de la came dès que la zone de démultiplication est dépassée.The apparatus according to the invention is characterized in that the control lever comprises transmission means cooperating with a guide ramp of the flange to interrupt the mechanical connection with the cam after passing an intermediate position of the lever, causing the exhausting said ramp out of the reduction zone, and that the end of the flange guide ramp corresponds to the anti-panic position of the transmission means, allowing automatic locking of the cam as soon as the reduction zone is exceeded .

Selon un premier mode de réalisation de l'invention, les moyens de transmission comportent une biellette d'entraînement articulée au levier, et pouvant glisser le long de la rampe de guidage dans ladite zone de démultiplication pour le déblocage de la came.According to a first embodiment of the invention, the transmission means comprise a drive rod articulated to the lever, and slidable along the guide ramp in said reduction zone for unlocking the cam.

Selon un deuxième mode de réalisation, les moyens de transmission sont dotés d'un axe d'entraînement solidaire du levier, et coopérant avec un cliquet monté à pivotement sur un axe du flasque, ledit cliquet étant poussé par l'axe d'entraînement contre la rampe de guidage pendant la zone de démultiplication pour amorcer l'entraînement de la came dans le sens du déblocage. L'axe est configuré pour échapper au clique dans la position intermédiaire anti-panique.According to a second embodiment, the transmission means are provided with a drive shaft integral with the lever, and cooperating with a pawl pivotally mounted on an axis of the flange, said pawl being pushed by the drive shaft against the guide ramp during the reduction zone to initiate the drive of the cam in the unlocking direction. The axis is configured to escape the clique in the intermediate anti-panic position.

Préférentiellement, une sur-course du levier dans le sens du déblocage au-delà de la position intermédiaire, rétablit la liaison mécanique avec la came, et l'entraîne directement sans démultiplication.Preferably, an over-travel of the lever in the unlocking direction beyond the intermediate position, restores the mechanical connection with the cam, and drives it directly without reduction.

Le réarmement de la fonction anti-panique s'effectue manuellement en ramenant le levier de commande dans le sens opposé pour replacer les moyens de transmission dans leur position d'origine du côté de la rampe de guidage.The anti-panic function is manually reset by moving the control lever in the opposite direction to replace the transmission means in their original position on the side of the guide rail.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre de deux modes de réalisation de l'invention donnés à titre d'exemples non limitatifs et représentés aux dessins annexés, dans lesquels :

  • la figure 1 est une vue en élévation d'un appareil assureur descendeur à levier de déblocage selon l'art antérieur ;
  • la figure 2 montre une vue éclatée en perspective d'un premier mode de réalisation de l'assureur descendeur selon l'invention ;
  • la figure 3 est une vue en coupe de l'assureur descendeur du côté de la came, et après l'installation de la corde ;
  • les figures 4A et 4B sont des vues en perspective du levier 11 commande équipé d'une biellette d'entraînement illustrée selon deux positions distinctes ;
  • la figure 4C montre l'appareil en état de blocage par suite de la tension de la corde, le levier occupant une position repliée au voisinage du flasque ;
  • les figures 5 et 6 représentent des vues partielles en coupe du levier lors du déblocage progressif de la came avec un effort démultiplié ;
  • la figure 7 illustre l'échappement de la biellette avec interruption de la liaison mécanique entre le levier et la came, provoquant le reblocage automatique de l'appareil ;
  • la figure 8 représente une sur-course du levier de déblocage pour rétablit la liaison mécanique avec la came permettant à l'utilisateur de pouvoir débloquer manuellement la came sans démultiplication ;
  • les figures 9 à 12 montrent les phases successives de réarmement manuel du levier pour réactiver la fonction antipanique après l'échappement de la biellette ;
  • les figures 13 à 16 montrent des vues en coupe d'un deuxième mode de réalisation de l'invention, lequel est illustré au cours du cycle de déblocage démultiplié jusqu'à la position anti-panique ;
  • les figures 17 à 19 montrent les différentes phases de réarment manuel de la fonction anti-panique du deuxième mode de réalisation.
Other advantages and features will emerge more clearly from the following description of two embodiments of the invention given as non-restrictive examples and represented in the accompanying drawings, in which:
  • the figure 1 is an elevational view of a descending insurer with unlocking lever according to the prior art;
  • the figure 2 shows an exploded perspective view of a first embodiment of the descending insurer according to the invention;
  • the figure 3 is a sectional view of the insurer chute on the side of the cam, and after the installation of the rope;
  • the Figures 4A and 4B are perspective views of the control lever 11 equipped with a drive rod illustrated in two distinct positions;
  • the figure 4C shows the apparatus in blocking state due to the tension of the rope, the lever occupying a folded position in the vicinity of the flange;
  • the Figures 5 and 6 represent partial sectional views of the lever during the progressive release of the cam with a reduced effort;
  • the figure 7 illustrates the escape of the rod with interruption of the mechanical connection between the lever and the cam, causing the automatic re-locking of the device;
  • the figure 8 represents an over-travel of the release lever to restore the mechanical connection with the cam allowing the user to manually unlock the cam without reduction;
  • the Figures 9 to 12 show the successive phases of manual reset of the lever to reactivate the antipanic function after the escape of the rod;
  • the Figures 13 to 16 show cross-sectional views of a second embodiment of the invention, which is illustrated during the release cycle multiplied to the anti-panic position;
  • the Figures 17 to 19 show the different phases of manual reset of the anti-panic function of the second embodiment.

Description détaillée de l'inventionDetailed description of the invention

En référence à la figure 2 illustrant une vue éclatée en perspective d'un premier assureur descendeur D1 selon l'invention, on retrouve le flasque 13 fixe pour le montage de la came 10 rotative, et le levier 11 de commande en forme de poignée articulée sur la came 10 par l'axe 14. La came 10 et le levier 11 de commande sont agencés de part et d'autre du flasque 13. L'ergot d'appui 15 du dispositif de la figure 1 de l'art antérieur, est remplacé par une biellette 20 d'entraînement, et la butée 16 directe est supprimée et remplacée par une rampe de guidage 21 prévue le long du chant du flasque 13. La biellette 20 est articulée au levier 11 au moyen d'un axe 22, et est maintenue en position par un ressort (non représenté). Le flasque 13 est doté d'un évidement 23 autorisant le passage de la biellette 20 lorsqu'elle se déplace le long de la rampe 21 de guidage après actionnement du levier 11 dans le sens du déblocage. L'évidement 23 est délimité à sa partie supérieure par la rampe de guidage 21. La came 10 comporte un premier orifice 24 pour le passage de l'axe 12 fixé dans un trou 26 du flasque 13, et un deuxième orifice 25 pour le montage de l'axe 14 d'articulation du levier 11 de commande. Un deuxième flasque 27 est agencé à l'opposé du premier flasque 13, et coopère avec une entretoise 28 pour maintenir la corde en place. Le deuxième flasque 27 peut être fixe ou basculant. Pour le blocage de la corde, la came 10 presse la corde contre une surface de freinage 29, laquelle est prévue sur un plot 30 inséré et fixé par une vis 31 entre les deux flasques 13, 27. Les deux flasques 13, 27 sont pourvus de trous 33, 34 pour l'accrochage d'un mousqueton d'attache (non représenté).With reference to the figure 2 illustrating an exploded view in perspective of a first undercarrier D1 according to the invention, there is found the flange 13 fixed for mounting the rotary cam 10, and the control lever 11 in the form of handle articulated on the cam 10 by the 14. The cam 10 and the control lever 11 are arranged on either side of the flange 13. The support pin 15 of the device of the figure 1 of the prior art, is replaced by a drive rod 20, and the direct stop 16 is removed and replaced by a guide ramp 21 provided along the edge of the flange 13. The link 20 is articulated to the lever 11 by means of an axis 22, and is held in position by a spring (not shown). The flange 13 is provided with a recess 23 allowing the passage of the rod 20 when it moves along the ramp 21 of guiding after actuation of the lever 11 in the unlocking direction. The recess 23 is delimited at its upper part by the guide ramp 21. The cam 10 has a first orifice 24 for the passage of the axis 12 fixed in a hole 26 of the flange 13, and a second orifice 25 for mounting of the axis 14 of articulation of the control lever 11. A second flange 27 is arranged opposite the first flange 13, and cooperates with a spacer 28 to hold the rope in place. The second flange 27 can be fixed or tilting. For the locking of the rope, the cam 10 presses the rope against a braking surface 29, which is provided on a stud 30 inserted and fixed by a screw 31 between the two flanges 13, 27. The two flanges 13, 27 are provided holes 33, 34 for hooking a carabiner attachment (not shown).

La figure 3 montre le descendeur du côté de la came 10, après l'installation d'une corde 32. La came 10 est montée excentrée sur l'axe 12, et est conformée en poulie autour de laquelle est enroulée une boucle de la corde 32.The figure 3 shows the descender on the side of the cam 10, after the installation of a rope 32. The cam 10 is eccentrically mounted on the axis 12, and is shaped into a pulley around which is wound a loop of the rope 32.

Les figures 4A et 4B représentent le levier 11 de commande équipé de la biellette 20 d'entraînement, laquelle peut pivoter autour de son axe 22. Ce dernier est enfilé dans un trou borgne du levier 11, au voisinage de l'orifice 35 circulaire de passage de l'axe 14 du levier 11. Un ressort de torsion 36 (figure 2) est enfilé coaxialement sur l'axe 14 à l'intérieur de l'orifice 35 pour solliciter la came 10 vers la position de déblocage.The Figures 4A and 4B represent the control lever 11 equipped with the drive rod 20, which can pivot about its axis 22. The latter is threaded into a blind hole of the lever 11, in the vicinity of the circular hole 35 for the passage of the axis 14 of the lever 11. A torsion spring 36 ( figure 2 ) is threaded coaxially on the axis 14 inside the orifice 35 to bias the cam 10 to the unlocking position.

Le fonctionnement du descendeur assureur selon l'invention est illustré en référence aux figures 4C et 5-12 :

  • Lorsque la corde 32 est sous tension, soit par le poids de l'utilisateur lors d'un usage en descendeur, soit lors d'un usage en assureur par l'effet de traction exercée par un premier de cordée à assrer, la came 10 est sollicitée en rotation autour de l'axe 12 vers la position de blocage. La corde 32 est coincée par la came 10 contre la surface de freinage 29, de manière à stopper tout mouvement de descente de l'utilisateur. Le levier 11 de commande se retrouve replié totalement vers la gauche, au voisinage du flasque 13 fixe (voir figure 4C).
The operation of the faller insurer according to the invention is illustrated with reference to the Figures 4C and 5-12 :
  • When the rope 32 is under tension, either by the weight of the user during downhill use, or during use in the insurer by the pulling effect exerted by a roped rope leader, the cam 10 is requested in rotation around the axis 12 to the blocking position. The rope 32 is wedged by the cam 10 against the braking surface 29, so as to stop any downward movement of the user. The control lever 11 is found folded completely to the left, in the vicinity of the flange 13 fixed (see figure 4C ).

Pour libérer cette position de blocage lorsque la corde 32 est sous tension, l'utilisateur déplie le levier 11 en le faisant tourner dans le sens horaire. Sur la figure 5, la biellette 20 vient en appui sur la rampe 21 qui définit la zone de démultiplication pour l'entraînement de la came 10 dans le sens du déblocage avec un effort démultiplié. La rotation du levier 11 entraîne la rotation de la came 10 dans un rapport prédéterminé, par exemple de 1/3.To release this blocking position when the rope 32 is under tension, the user unfolds the lever 11 by rotating it clockwise. On the figure 5 , the link 20 bears on the ramp 21 which defines the reduction zone for driving the cam 10 in the unlocking direction with a reduced effort. The rotation of the lever 11 causes the cam 10 to rotate in a predetermined ratio, for example 1/3.

Sur la figure 6, le déplacement poursuivi du levier 11 dans le sens de la flèche F, entraîne la biellette 20 qui va glisser le long de la rampe 21 de guidage. Aussi lontemps que la biellette 20 reste sur la rampe 21, l'utilisateur pourra régler le degré de conicement de la corde, et contrôler la vitesse de descende dans le mode descendeur.On the figure 6 , the continued movement of the lever 11 in the direction of the arrow F, causes the link 20 which will slide along the guide ramp 21. As long as the rod 20 remains on the ramp 21, the user can adjust the degree of conicement of the rope, and control the speed of descent in the descending mode.

Sur la figure 7, si la biellette 20 atteint et dépasse l'extrémité de la rampe 21, elle est prête à s'échapper du flasque 13, de manière à interrompre la liaison mécanoque de transmission entre le levier 11 et la came 10. Cette dernière étant libérée, va être ramenée automatiquement vers la position de blocage de la corde par l'action de rappel du ressort de torsion 36. Ce cas peut intervenir lorsque l'utilisateur tire trop fort sur le levier 11 dans le sens du déblocage. C'est la fonction anti-panique qui rebloque automatiquement la corde 32, au-delà de la zone de démultiplication après échappement de la biellette 20 de la rampe 21.On the figure 7 , if the link 20 reaches and exceeds the end of the ramp 21, it is ready to escape from the flange 13, so as to interrupt the mechanical connection transmission between the lever 11 and the cam 10. The latter being released, will be automatically returned to the locking position of the rope by the biasing action of the torsion spring 36. This case may occur when the user pulls too hard on the lever 11 in the unlocking direction. It is the anti-panic function that automatically re-locks the rope 32, beyond the reduction zone after exhaust rod 20 of the ramp 21.

Sur la figure 8, après une sur-course du levier 11 dans le sens de la flèche F, la biellette 20 arrive en engagement contre une butée 37 de la came 10, ce qui rétablit la liaison mécanique permettant à l'utilisateur de pouvoir débloquer la came 10, et descendre sans démultiplication, s'il ne sait pas réarmer le mécanisme, et réactiver l'antipanique.On the figure 8 after an over-travel of the lever 11 in the direction of the arrow F, the rod 20 comes into engagement against a stop 37 of the cam 10, which restores the mechanical connection allowing the user to unlock the cam 10, and descend without reduction, if he does not know how to reset the mechanism, and reactivate the panic.

Les figures 9 à 12 représentent les différentes phases de réarmement manuel pour réactiver la fonction antipanique après l'échappement de la biellette 20.
Il suffit de ramener le levier 11 dans le sens anti-horaire indiqué par la flèche R (figure 9), provoquant le pivotement de la biellette 20 autour de son axe 22 lorsqu'elle se trouve en appui sur le flasque 13 (figure 10).
Sur la figure 11, la biellette 20 s'escamote en franchissant le nez 38 du flasque 13, et revient se placer dans la position d'origine à l'intérieur de la rampe 21 du flasque 13 grâce à un ressort spiral (voir figure 12).The Figures 9 to 12 represent the various phases of manual reset to reactivate the antipanic function after the escape of the rod 20.
It is sufficient to turn the lever 11 counterclockwise indicated by the arrow R ( figure 9 ), causing pivoting of the link 20 about its axis 22 when it bears on the flange 13 ( figure 10 ).
On the figure 11 , the link 20 retracts by crossing the nose 38 of the flange 13, and returns to move into the original position inside the ramp 21 of the flange 13 by means of a spiral spring (see figure 12 ).

Les figures 13 à 19 montrent un deuxième mode de réalisation d'un assureur descendeur D2 selon l'invention. Les plupart des pièces sont identiques avec les mêmes numéros de repères, seule les moyens de mise oeuvre de la fonction anti-panique sont différents par rapport à ceux du dispositif D1 précité.The Figures 13 to 19 show a second embodiment of an insurer descender D2 according to the invention. Most of the parts are identical with the same reference numbers, only the means of implementation of the anti-panic function are different from those of the aforementioned device D1.

La biellette 20 du dispositif D1 des figures 2-12 est remplacée par un axe d'entraînement 50 solidaire du levier 11, ledit axe étant destiné à coopérer avec un cliquet 51 monté à pivotement sur un axe 52 du flasque 13. Le cliquet 51 est réalisé de préférence en acier inoxydable, permettant un contact avec l'axe 50 avec une endurance élevée.The link 20 of the device D1 Figures 2-12 is replaced by a drive shaft 50 integral with the lever 11, said axis being intended to cooperate with a pawl 51 pivotally mounted on an axis 52 of the flange 13. The pawl 51 is preferably made of stainless steel, allowing contact with the axis 50 with high endurance.

Au début de la course du levier 11 dans le sens horaire (flèche F, figures 13 et 14), l'axe 50 pousse le cliquet 51 en appui contre la rampe 21 du flasque 13 pour amorcer l'entraînement de la came 10 dans le sens du déblocage. L'axe 50 est avantageusement entouré par un tube, par exemple en acier inoxydable, pour améliorer le glissement de l'axe 50 sur le cliquet 51. La zone de reprise d'efforts entre le cliquet 51 et la rampe 21 du flasque 13 permet un déblocage démultiplié de la came 10 lorsque le descendeur D2 est sous charge.At the beginning of the stroke of lever 11 clockwise (arrow F, Figures 13 and 14 ), the shaft 50 pushes the pawl 51 bearing against the ramp 21 of the flange 13 to initiate the drive of the cam 10 in the unlocking direction. The axis 50 is advantageously surrounded by a tube, for example stainless steel, to improve the sliding of the axis 50 on the pawl 51. The recovery zone forces between the pawl 51 and the ramp 21 of the flange 13 allows a releasable release of the cam 10 when the descender D2 is under load.

Sur la figure 15, le déplacement poursuivi du levier 11 selon la flèche F, positionne l'axe 50 à l'extrémité de droite du cliquet 51, prêt à s'échapper pour interrompre la liaison mécanique entre le levier 11 et la came 10. C'est la position anti-panique dans laquelle la came 10 libérée bloque automatiquement la corde 32 suite à l'échappement de l'axe 50 (figure 16). Si l'utilisateur poursuit la rotation du levier 11 dans le sens F, l'axe 50 vient en butée contre la came 10, et l'entraîne directement sans démultiplication. Cette opération permet de donner du mou lorsqu'on veut descendre l'utilisateur en moulinette, en l'absence de tension dans la corde.On the figure 15 , the continued movement of the lever 11 according to the arrow F, positions the axis 50 at the right end of the pawl 51, ready to escape to interrupt the mechanical connection between the lever 11 and the cam 10. This is the anti-panic position in which the cam 10 released automatically blocks the rope 32 following the escape of the axis 50 ( figure 16 ). If the user continues the rotation of the lever 11 in the direction F, the shaft 50 abuts against the cam 10, and leads directly without reduction. This operation can give slack when you want to descend the user in roping, in the absence of tension in the rope.

Le réarmement de la fonction anti-panique s'effectue en ramenant le levier 11 dans le sens opposé pour replacer l'axe 50 d'entraînement dans sa position d'origine grâce au cliquet 51 monté sur ressort. Il suffit pour cela de ramener le levier 11 dans le sens anti-horaire de la flèche R. Au début du réarmement, la réaction de l'axe 50 sur la face incurvée du cliquet 51 provoque son effacement (figures 17 et 18). L'axe 50 d'entraînement du levier 11 peut ainsi revenir à sa position d'origine (figure 19), avec l'anti-panique réarmé.The anti-panic function is reset by moving the lever 11 in the opposite direction to return the drive shaft 50 to its original position by virtue of the spring-mounted pawl 51. It suffices to return the lever 11 in the counterclockwise direction of the arrow R. At the beginning of rearming, the reaction of the axis 50 on the curved face of the pawl 51 causes it to be erased ( Figures 17 and 18 ). The drive shaft 50 of the lever 11 can thus return to its original position ( figure 19 ), with the anti-panic reset.

Claims (7)

Dispositif assureur descendeur (D1, D2) pour corde comprenant : - une came (10) montée rotative sur un flasque (13) fixe, pour assurer un blocage de la corde (32) lorsque ladite corde est sous tension, - un levier (11) ou poignée de commande articulé sur la came (10) pour provoquer un déblocage progressif de la corde avec un effet démultiplié au début de la course de déblocage du levier (11),
caractérisé en ce que le levier (11) de commande comporte des moyens de transmission coopérant avec une rampe de guidage (21) du flasque (13) fixe pour interrompre la liaison mécanique avec la came (10) après dépassement d'une position intermédiaire du levier, entraînant l'échappement de ladite rampe (21) hors de la zone de démultiplication, et que l'extrémité de la rampe de guidage (21) du flasque (13) correspond à la position anti-panique des moyens de transmission, permettant un blocage automatique de la came (10) dès que la zone de démultiplication est dépassée. Insurer device descender (D1, D2) for rope comprising: a cam (10) rotatably mounted on a fixed flange (13), for locking the rope (32) when said rope is under tension, - a lever (11) or control handle articulated on the cam (10) to cause a progressive release of the rope with a multiplied effect at the beginning of the release stroke of the lever (11),
characterized in that the control lever (11) comprises transmission means cooperating with a guide ramp (21) of the flange (13) fixed to interrupt the mechanical connection with the cam (10) after passing an intermediate position of lever, causing said ramp (21) to escape from the reduction zone, and that the end of the guide ramp (21) of the flange (13) corresponds to the anti-panic position of the transmission means, allowing an automatic locking of the cam (10) as soon as the reduction zone is exceeded. Dispositif assureur descendeur (D1) selon la revendication 1, caractérisé en ce que les moyens de transmission comportent une biellette (20) d'entraînement articulée au levier (11), et pouvant glisser le long de la rampe de guidage dans ladite zone de démultiplication pour le déblocage de la came (10).Descender insulator device (D1) according to claim 1, characterized in that the transmission means comprise a link (20) for driving articulated to the lever (11), and can slide along the guide ramp in said demultiplication zone for unlocking the cam (10). Dispositif assureur descendeur (D2) selon la revendication 1, caractérisé en ce que les moyens de transmission sont dotés d'un axe (50) d'entraînement solidaire du levier (11), et coopérant avec un cliquet (51) monté à pivotement sur un axe (52) du flasque (13), ledit cliquet (51) étant poussé par l'axe (50) d'entraînement contre la rampe de guidage (21) pendant la zone de démultiplication pour amorcer l'entraînement de la came (10) dans le sens du déblocage.Descender device (D2) according to claim 1, characterized in that the transmission means are provided with a drive shaft (50) integral with the lever (11), and cooperating with a pawl (51) pivotally mounted on an axis (52) of the flange (13), said pawl (51) being pushed by the drive shaft (50) against the guide ramp (21) during the reduction zone to initiate the driving of the cam ( 10) in the unlocking direction. Dispositif assureur descendeur (D2) selon la revendication 3, caractérisé en ce que l'axe (50) est configuré pour échapper au cliquet (51) dans la position intermédiaire anti-panique.Descender insulator device (D2) according to claim 3, characterized in that the axis (50) is configured to escape the pawl (51) in the intermediate anti-panic position. Dispositif assureur descendeur selon l'une des revendications précédentes, caractérisé en ce qu'une sur-course du levier (11) dans le sens du déblocage au-delà de la position intermédiaire, rétablit la liaison mécanique et entraîne directement la came (10) sans démultiplication.Faller insulator device according to one of the preceding claims, characterized in that an over-travel of the lever (11) in the unlocking direction beyond the intermediate position restores the mechanical connection and directly drives the cam (10). without reduction. Dispositif assureur descendeur selon la revendication 2, caractérisé en ce que le réarmement de la fonction anti-panique s'effectue en ramenant le levier (11) dans le sens opposé pour replacer la bielette (20) d'entraînement dans sa position d'origine du côté de la rampe de guidage (21).Faller insulator device according to Claim 2, characterized in that the anti-panic function is reset by moving the lever (11) in the opposite direction to return the driving link (20) to its original position. on the side of the guide rail (21). Dispositif assureur descendeur selon la revendication 3 ou 4, caractérisé en ce que le réarmement de la fonction anti-panique s'effectue en ramenant le levier (11) dans le sens opposé pour replacer l'axe (50) d'entraînement dans sa position d'origine grâce au cliquet (51) monté sur ressort.Faller insulator device according to Claim 3 or 4, characterized in that the anti-panic function is reset by moving the lever (11) in the opposite direction to return the drive shaft (50) to its position. original thanks to the ratchet (51) mounted on spring.
EP15200227.5A 2015-02-11 2015-12-15 Descender device on rope with gear reduction and panic lock Active EP3056248B1 (en)

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FR1551093A FR3032354A1 (en) 2015-02-11 2015-02-11 DESCENDOR INSURER DEVICE ON DEMULTIPLICATION ROPE AND ANTI-PANIC BLOCKAGE

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TWI698597B (en) 2020-07-11
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TW201629366A (en) 2016-08-16
CN105854194A (en) 2016-08-17
FR3032354A1 (en) 2016-08-12
EP3056248B1 (en) 2017-03-15
CN105854194B (en) 2021-10-26

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