EP2018894A1 - Self-locking abseiling device with disengageable handle - Google Patents

Self-locking abseiling device with disengageable handle Download PDF

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Publication number
EP2018894A1
EP2018894A1 EP08354039A EP08354039A EP2018894A1 EP 2018894 A1 EP2018894 A1 EP 2018894A1 EP 08354039 A EP08354039 A EP 08354039A EP 08354039 A EP08354039 A EP 08354039A EP 2018894 A1 EP2018894 A1 EP 2018894A1
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EP
European Patent Office
Prior art keywords
handle
pulley
self
locking
selector
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
EP08354039A
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German (de)
French (fr)
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EP2018894B1 (en
Inventor
Paul Petzl
Alain Maurice
Pierre Olivier Chabod
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Zedel SAS
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Zedel SAS
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Publication of EP2018894A1 publication Critical patent/EP2018894A1/en
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Publication of EP2018894B1 publication Critical patent/EP2018894B1/en
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    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3936—Pivoted part
    • Y10T24/394—Cam lever

Definitions

  • the declutch threshold depends on the angular position of the handle, and the effort to be provided depending on the load applied to the device.
  • the object of the invention consists in producing a self-locking descender with controlled release of the mechanical connection between the pulley and the handle.
  • the descender according to the invention is characterized in that the mechanism comprises a selector coupled to an operating member intended to occupy an active position or an inactive position, respectively to inhibit or allow disengagement of the pulley.
  • the selector operating member abuts in the active position with a fixed boss to prevent further movement of the handle beyond the intermediate position.
  • the mechanical connection of the mechanism comprises a toggle allowing the coming of the operating member against the boss before exceeding the dead center of the toggle.
  • the latter is composed of a drive pin integral with the pulley, and a transmission rod pivotally mounted within a base integral with the handle.
  • the operating member preferably comprises a circular ramp connected by a rod to a push button associated with the handle.
  • the operating member can also be bistable, moving from the active position to the inactive position, and vice versa, intervening at each control pulse on the selector.
  • a safety descender 10 comprises a pulley 11 shaped as a cam 12, and equipped in addition to a groove 13 for winding the rope.
  • the pulley 11 is mounted limited rotation about a first axis 14, and cooperates with a braking surface 15 of a fixed pad 16 to lock or unlock the rope 17.
  • the shaft 14 and the pad 16 are carried by a first flange 18 fixed, which extends parallel to a second movable flange (not shown) of similar shape, and mounted to tilt to allow the introduction of the rope 17.
  • Each flange comprises at its base an orifice 19 for attaching a carabiner for attaching the chute to the harness of the user.
  • a return spring (not shown) of the torsion type is threaded on the axis 14, and urges the pulley 11 to the unlocking position when the tension on the rope 17 is below a predetermined threshold. The distance d1 between the cam 12 and the braking surface 16 of the pad is then maximum.
  • the pulley 11 is coupled to a drive finger 20 cooperating with a mechanism 21, which is controlled by an actuating handle 22 to ensure the manual release of the rope 17.
  • the mechanism 21 is provided with a transmission rod 23 pivotally mounted on a second axis 24 inside a circular base 25 in the form of a drum integral with the handle 22.
  • the drive finger 20 is formed by a curvilinear lever articulated on a third axis 28 integral with the movable pulley 11, and passing through an oblong slot of the first flange 18.
  • the finger 20 is also equipped with a redan 26, and the end of the transmission rod 23 is provided with a stop 27 intended to engage the step 26 to ensure the rotational drive of the pulley 11 during the actuation of the handle 22.
  • the drive finger 20 and the transmission link 23 form a dead-center toggle joint, which corresponds to the alignment of the axes 28, 24 with the zone of contact of the abutment 27 on the step 26.
  • the mechanical connection between the handle 22 and the pulley 11 is established when the stop 27 of the transmission rod 23 is housed in the step 26 of the drive finger 20.
  • the toggle remains stable to an intermediate position of the handle 22.
  • the cam 12 is removed from the pad 15, and allows the descent movement of the user following the unlocking of the rope 17.
  • a continued lowering of the handle 22 beyond the intermediate position causes the tilting of the toggle joint, and the breaking of the mechanical connection between the drive finger 20 and the transmission rod 23. This results in a disengaging effect of the pulley 11 of the descender 10, and the automatic return of the cam 12 to a locking position under the action of the tension of the rope 17.
  • the mechanism 21 of the descender 10 further comprises a control selector 29 for enabling or inhibiting the disengagement of the mechanical connection between the drive finger 20 and the transmission link 23.
  • the selector 29 comprises a push button 30 located at the end of the handle 22, and connected by a rod 31 to a moving actuator 32 retaining the declutching function in the inactive position, or condemning said function in the active position.
  • the operating member 32 may be bistable, or monostable if it cooperates with a return spring. It is formed as an example by a ramp 33 of circular shape housed in the base 25, and having a face 34 inclined opposite the rod 31.
  • the third axis 28 of the drive finger 20 carries a boss 35 serving as limit stop for the ramp 33.
  • Guiding pins 36 are secured to the base 25, and are housed in oblong slots 37 of the sector 33 to guide the latter in a circular motion during the depression of the pushbutton 30.
  • control mechanism 21 of the descender 10 is as follows:
  • the pushbutton 30 of the selector 29 is not activated, and remains protruding so as to allow the anti-panic function.
  • the handle 22 is in the raised position, and the cam 12 blocks the rope 17 against the pad 16 following the tension F1 exerted on the upper strand of the rope.
  • the rotation of the handle 22 in the direction of the arrow F2 initiates the descent movement of the user following the unlocking of the cam 12 authorized by the mechanical linkage of the toggle formed by the drive finger 20 and the transmission rod 23.
  • the handle 22 is moved to the intermediate position corresponding to the maximum opening of the cam 12.
  • the toggle becomes unstable following the alignment (see dotted lines) of the axes 28 and 24 with the contact zone of the stop 27 with the redan 26.
  • the Figure 2C shows the tilting of the toggle during the continued movement of the handle 22 (arrow F3) beyond the intermediate position.
  • the ramp 33 cooperates with the drive finger 20 to pivot the transmission link 23 on its axis 24.
  • the 2D figure illustrates the disengagement phase, the mechanical connection of the toggle being broken following the exhaust of the transmission rod 23.
  • the handle 22 is no longer linked to that of the pulley 11, causing the return of the cam 12 to the blocking position.
  • the pushbutton 30 of the selector 29 is held down to inhibit the anti-panic function.
  • the handle 22 is in the raised position, and the pressure exerted on the push-button 30 makes it possible to advance the ramp 33 in rotation along the periphery of the base 25.
  • the cam 12 remains in the locking position as in the Figure 2A .
  • the progressive lowering of the handle 22 (arrow F2) towards the intermediate position ( figure 3B ) causes the release of the rope 17 by spacing the cam 12, and the abutment of the inclined face 34 of the ramp 33 against the boss 35 of the finger 20 before exceeding the dead center of the toggle.
  • the release of the pushbutton 30 moves the ramp 33 away from the boss 35, and allows the automatic restarting of the anti-panic release function.

Abstract

The device (10) has an actuating handle (22) actuating a movable pulley (11) for assuring manual unlocking of a rope in an intermediate position. A mechanical connection mechanism (21) interrupts connection between the pulley and the handle after crossing the position to cause disengagement of the pulley and automatic return of a rotary cam (12) towards a locking position. The mechanism has a selector (29) that is connected to a monostable or bistable operating unit (32) attaining active or inactive position, for preventing or permitting the disengagement of the pulley, respectively.

Description

Domaine technique de l'inventionTechnical field of the invention

L'invention est relative à un descendeur autobloquant pour la descente le long d'une corde, comprenant :

  • une poulie conformée en came rotative entre une position de blocage de la corde contre un patin, et une position de déblocage,
  • une poignée d'actionnement de la poulie pour assurer dans une position intermédiaire le déblocage manuel de la corde,
  • et un mécanisme à liaison mécanique interruptible entre la poulie et la poignée après dépassement de ladite position intermédiaire provoquant le débrayage de la poulie et le retour automatique de la came vers la position de blocage.
The invention relates to a self-locking descender for the descent along a rope, comprising:
  • a pulley shaped as a rotary cam between a locking position of the rope against a pad, and an unlocking position,
  • a handle for actuating the pulley to ensure in an intermediate position the manual release of the rope,
  • and a mechanical link mechanism interruptible between the pulley and the handle after passing said intermediate position causing the disengagement of the pulley and the automatic return of the cam to the locking position.

État de la techniqueState of the art

Le document EP 688581 de la demanderesse décrit un descendeur du genre mentionné, dans lequel la poignée d'actionnement manuel est connectée à la poulie par une liaison mécanique à genouillère. Le mouvement de descente de l'utilisateur est autorisé lors du passage de la poignée vers une position intermédiaire permettant le déblocage de la came. Un double blocage de la corde est possible dans l'état de charge pour deux positions distinctes de la poignée :

  • soit une position relevée après relâchement de la poignée,
  • soit après débrayage de la liaison mécanique lors de l'abaissement de la poignée au-delà de la position intermédiaire.
The document EP 688581 of the Applicant discloses a descender of the kind mentioned, wherein the manual operating handle is connected to the pulley by a mechanical linkage toggle. The descent movement of the user is allowed when the handle is moved to an intermediate position allowing the release of the cam. Double locking of the rope is possible in the state of charge for two different positions of the handle:
  • a raised position after loosening the handle,
  • or after disengagement of the mechanical link when lowering the handle beyond the intermediate position.

Après débrayage, il est nécessaire de réarmer le mécanisme pour rétablir la liaison mécanique. Le seuil de débrayage dépend de la position angulaire de la poignée, et de l'effort à fournir en fonction de la charge appliquée à l'appareil.After disengagement, it is necessary to reset the mechanism to restore the mechanical connection. The declutch threshold depends on the angular position of the handle, and the effort to be provided depending on the load applied to the device.

Objet de l'inventionObject of the invention

L'objet de l'invention consiste à réaliser un descendeur autobloquant à débrayage contrôlé de la liaison mécanique entre la poulie et la poignée.The object of the invention consists in producing a self-locking descender with controlled release of the mechanical connection between the pulley and the handle.

Le descendeur selon l'invention est caractérisé en ce que le mécanisme comporte un sélecteur accouplé à un organe de manoeuvre destiné à occuper une position active ou une position inactive, respectivement pour inhiber ou autoriser le débrayage de la poulie.The descender according to the invention is characterized in that the mechanism comprises a selector coupled to an operating member intended to occupy an active position or an inactive position, respectively to inhibit or allow disengagement of the pulley.

L'organe de manoeuvre du sélecteur vient en butée en position active avec un bossage fixe pour empêcher tout déplacement poursuivi de la poignée au-delà de la position intermédiaire.The selector operating member abuts in the active position with a fixed boss to prevent further movement of the handle beyond the intermediate position.

Selon un mode de réalisation préférentiel, la liaison mécanique du mécanisme comporte une genouillère autorisant la venue de l'organe de manoeuvre contre le bossage avant le dépassement de point mort de la genouillère. Cette dernière est composée d'un doigt d'entraînement solidaire de la poulie, et d'une biellette de transmission montée à pivotement à l'intérieur d'une embase solidaire de la poignée. L'organe de manoeuvre comprend de préférence une rampe circulaire reliée par une tringle à un bouton-poussoir associé à la poignée.According to a preferred embodiment, the mechanical connection of the mechanism comprises a toggle allowing the coming of the operating member against the boss before exceeding the dead center of the toggle. The latter is composed of a drive pin integral with the pulley, and a transmission rod pivotally mounted within a base integral with the handle. The operating member preferably comprises a circular ramp connected by a rod to a push button associated with the handle.

Dans le cas d'un organe de manoeuvre monostable soumis à l'action de rappel d'un ressort, le relâchement du sélecteur assure la remise en service automatique de la fonction débrayage.In the case of a monostable actuator subject to the return action of a spring, the release of the selector ensures the automatic restart of the disengage function.

L'organe de manoeuvre peut également être bistable, le passage de la position active vers la position inactive, et vice-versa, intervenant à chaque impulsion de commande sur le sélecteur.The operating member can also be bistable, moving from the active position to the inactive position, and vice versa, intervening at each control pulse on the selector.

Description sommaire des dessinsBrief description of the drawings

D'autres avantages et caractéristiques ressortiront plus clairement de la description qui va suivre d'un mode de réalisation de l'invention, donné à titre d'exemple non limitatif et représenté aux dessins annexés, dans lesquels :

  • la figure 1 est une vue schématique du descendeur équipé du sélecteur selon l'invention, la poignée étant représentée en position relevée, et le sélecteur en position inactive ;
  • la figure 1B montre une vue en coupe selon la ligne 2-2 de la figure 1A ;
  • les figures 2A-2D illustrent différentes phases de fonctionnement du descendeur lorsque le sélecteur est en position inactive autorisant le débrayage ;
  • les figures 3A et 3B montrent le fonctionnement du descendeur lorsque le sélecteur est en position active neutralisant le débrayage en stoppant le déplacement de la poignée au-delà de la position intermédiaire, et avant le dépassement du point mort de la genouillère.
Other advantages and features will emerge more clearly from the following description of an embodiment of the invention, given by way of non-limiting example and shown in the accompanying drawings, in which:
  • the figure 1 is a schematic view of the descender equipped with the selector according to the invention, the handle being shown in the raised position, and the selector in the inactive position;
  • the Figure 1B shows a sectional view along line 2-2 of the Figure 1A ;
  • the Figures 2A-2D illustrate different phases of operation of the chute when the selector is in the inactive position allowing disengagement;
  • the Figures 3A and 3B show the operation of the descender when the selector is in the active position neutralizing the disengagement by stopping the movement of the handle beyond the intermediate position, and before exceeding the neutral position of the toggle.

Description détaillée de l'inventionDetailed description of the invention

En référence aux figures, un descendeur 10 de sécurité comporte une poulie 11 conformée en came 12, et équipée en plus d'une gorge 13 d'enroulement de la corde. La poulie 11 est montée à rotation limitée autour d'un premier axe 14, et coopère avec une surface de freinage 15 d'un patin 16 fixe pour bloquer ou débloquer la corde 17. L'axe 14 et le patin 16 sont portés par un premier flasque 18 fixe, lequel s'étend parallèlement par rapport à un deuxième flasque mobile (non représenté) de forme similaire, et monté à basculement pour autoriser la mise en place de la corde 17.Referring to the figures, a safety descender 10 comprises a pulley 11 shaped as a cam 12, and equipped in addition to a groove 13 for winding the rope. The pulley 11 is mounted limited rotation about a first axis 14, and cooperates with a braking surface 15 of a fixed pad 16 to lock or unlock the rope 17. The shaft 14 and the pad 16 are carried by a first flange 18 fixed, which extends parallel to a second movable flange (not shown) of similar shape, and mounted to tilt to allow the introduction of the rope 17.

Chaque flasque comporte à sa base un orifice 19 destiné à l'accrochage d'un mousqueton pour l'attache du descendeur au harnais de l'utilisateur. Un ressort de rappel (non représenté) du type à torsion, est enfilé sur l'axe 14, et sollicite la poulie 11 vers la position de déblocage lorsque la tension sur la corde 17 est inférieure à un seuil prédéterminé. L'écartement d1 entre la came 12 et la surface de freinage 16 du patin est alors maximum.Each flange comprises at its base an orifice 19 for attaching a carabiner for attaching the chute to the harness of the user. A return spring (not shown) of the torsion type, is threaded on the axis 14, and urges the pulley 11 to the unlocking position when the tension on the rope 17 is below a predetermined threshold. The distance d1 between the cam 12 and the braking surface 16 of the pad is then maximum.

La poulie 11 est accouplée à un doigt d'entraînement 20 coopérant avec un mécanisme 21, lequel est piloté par une poignée 22 d'actionnement pour assurer le déblocage manuel de la corde 17. Le mécanisme 21 est doté d'une biellette de transmission 23 montée à pivotement sur un deuxième axe 24 à l'intérieur d'une embase 25 circulaire en forme de tambour solidaire de la poignée 22.The pulley 11 is coupled to a drive finger 20 cooperating with a mechanism 21, which is controlled by an actuating handle 22 to ensure the manual release of the rope 17. The mechanism 21 is provided with a transmission rod 23 pivotally mounted on a second axis 24 inside a circular base 25 in the form of a drum integral with the handle 22.

Le doigt d'entraînement 20 est formé par un levier curviligne articulé sur un troisième axe 28 solidaire de la poulie 11 mobile, et traversant une lumière oblongue du premier flasque 18. Le doigt 20 est équipé en plus d'un redan 26, et l'extrémité de la biellette de transmission 23 est pourvue d'une butée 27 destinée à venir en engagement contre le redan 26 pour assurer l'entraînement en rotation de la poulie 11 lors de l'actionnement de la poignée 22.The drive finger 20 is formed by a curvilinear lever articulated on a third axis 28 integral with the movable pulley 11, and passing through an oblong slot of the first flange 18. The finger 20 is also equipped with a redan 26, and the end of the transmission rod 23 is provided with a stop 27 intended to engage the step 26 to ensure the rotational drive of the pulley 11 during the actuation of the handle 22.

Le doigt d'entraînement 20 et la biellette de transmission 23 forment une genouillère à passage de point mort, lequel correspond à l'alignement des axes 28, 24 avec la zone de contact de la butée 27 sur le redan 26. La liaison mécanique entre la poignée 22 et la poulie 11 est établie lorsque la butée 27 de la biellette de transmission 23 est logée dans le redan 26 du doigt d'entraînement 20. La genouillère reste stable jusqu'à une position intermédiaire de la poignée 22. La came 12 est écartée du patin 15, et permet le mouvement de descente de l'utilisateur suite au déblocage de la corde 17.The drive finger 20 and the transmission link 23 form a dead-center toggle joint, which corresponds to the alignment of the axes 28, 24 with the zone of contact of the abutment 27 on the step 26. The mechanical connection between the handle 22 and the pulley 11 is established when the stop 27 of the transmission rod 23 is housed in the step 26 of the drive finger 20. The toggle remains stable to an intermediate position of the handle 22. The cam 12 is removed from the pad 15, and allows the descent movement of the user following the unlocking of the rope 17.

Un abaissement poursuivi de la poignée 22 au-delà de la position intermédiaire provoque le basculement de la genouillère, et la brisure de la liaison mécanique entre le doigt d'entraînement 20 et la biellette de transmission 23. Il en résulte un effet de débrayage de la poulie 11 du descendeur 10, et le retour automatique de la came 12 vers une position de blocage sous l'action de la tension de la corde 17. Pour réarmer le mécanisme 21, il suffit d'inverser le sens de manoeuvre de la poignée 22 depuis la position débrayée jusqu'à la position intermédiaire ou la position relevée, de manière à rétablir la liaison mécanique entre le doigt d'entraînement 20 et la biellette de transmission 23.A continued lowering of the handle 22 beyond the intermediate position causes the tilting of the toggle joint, and the breaking of the mechanical connection between the drive finger 20 and the transmission rod 23. This results in a disengaging effect of the pulley 11 of the descender 10, and the automatic return of the cam 12 to a locking position under the action of the tension of the rope 17. To reset the mechanism 21, simply reverse the direction of operation of the handle 22 from the disengaged position to the intermediate position or the raised position, so as to restore the mechanical connection between the drive finger 20 and the transmission rod 23.

La fonction anti-panique d'un tel descendeur autobloquant est connue et décrite en détail dans le document EP 688581 de la demanderesse. Dans l'état de charge du descendeur 10, la présence de la liaison mécanique interruptible entre la poignée 22 et la poulie 11 permet de conserver le blocage de la corde 17 après débrayage de la poulie 11, sans maintenir un effort sur la poignée 22. L'utilisateur qui relâche ou qui s'agrippe à la poignée 22 (en situation de panique), se trouve ainsi en sécurité totale grâce au mécanisme à double blocage de la corde, respectivement en position relevée et en position abaissée et débrayée de la poignée 22.The anti-panic function of such a self-locking descender is known and described in detail in the document EP 688581 of the plaintiff. In the state of charge of the descender 10, the presence of the interruptible mechanical connection between the handle 22 and the pulley 11 makes it possible to preserve the locking of the rope 17 after disengagement of the pulley 11, without maintaining a force on the handle 22. The user who releases or who clings to the handle 22 (in a panic situation), is thus completely safe thanks to the double locking mechanism of the rope, respectively in the raised position and in the lowered and disengaged position of the handle 22.

Selon l'invention, le mécanisme 21 du descendeur 10 comporte de plus un sélecteur 29 de commande destiné à autoriser ou à inhiber le débrayage de la liaison mécanique entre le doigt d'entraînement 20 et la biellette de transmission 23. Le sélecteur 29 comprend un bouton poussoir 30 situé en bout de la poignée 22, et relié par une tringle 31 à un organe de manoeuvre 32 mobile conservant la fonction débrayage en position inactive, ou condamnant ladite fonction en position active.According to the invention, the mechanism 21 of the descender 10 further comprises a control selector 29 for enabling or inhibiting the disengagement of the mechanical connection between the drive finger 20 and the transmission link 23. The selector 29 comprises a push button 30 located at the end of the handle 22, and connected by a rod 31 to a moving actuator 32 retaining the declutching function in the inactive position, or condemning said function in the active position.

L'organe de manoeuvre 32 peut être bistable, ou monostable s'il coopère avec un ressort de rappel. Il est formé à titre d'exemple par une rampe 33 de forme circulaire logée dans l'embase 25, et ayant une face 34 inclinée à l'opposé de la tringle 31. Le troisième axe 28 du doigt d'entraînement 20 porte un bossage 35 servant de butée de fin de course pour la rampe 33 .The operating member 32 may be bistable, or monostable if it cooperates with a return spring. It is formed as an example by a ramp 33 of circular shape housed in the base 25, and having a face 34 inclined opposite the rod 31. The third axis 28 of the drive finger 20 carries a boss 35 serving as limit stop for the ramp 33.

Des pions de guidage 36 sont solidarisés à l'embase 25, et sont logés dans des lumières 37 oblongues du secteur 33 pour guider ce dernier selon un mouvement circulaire lors de l'enfoncement du bouton-poussoir 30.Guiding pins 36 are secured to the base 25, and are housed in oblong slots 37 of the sector 33 to guide the latter in a circular motion during the depression of the pushbutton 30.

Le fonctionnement du mécanisme 21 de commande du descendeur 10 est le suivant :The operation of the control mechanism 21 of the descender 10 is as follows:

Sélecteur 29 dans l'état inactif (figures 2A-2D)Selector 29 in the inactive state (FIGS. 2A-2D)

Le bouton-poussoir 30 du sélecteur 29 n'est pas activé, et reste en saillie de manière à autoriser la fonction anti-panique.The pushbutton 30 of the selector 29 is not activated, and remains protruding so as to allow the anti-panic function.

Sur la figure 2A, la poignée 22 se trouve en position relevée, et la came 12 bloque la corde 17 contre le patin 16 suite à la tension F1 exercée sur le brin supérieur de la corde. La rotation de la poignée 22 dans le sens de la flèche F2 amorce le mouvement de descente de l'utilisateur suite au déblocage de la came 12 autorisé par la liaison mécanique de la genouillère formée par le doigt d'entraînement 20 et la biellette de transmission 23.On the Figure 2A , the handle 22 is in the raised position, and the cam 12 blocks the rope 17 against the pad 16 following the tension F1 exerted on the upper strand of the rope. The rotation of the handle 22 in the direction of the arrow F2 initiates the descent movement of the user following the unlocking of the cam 12 authorized by the mechanical linkage of the toggle formed by the drive finger 20 and the transmission rod 23.

Sur la figure 2B, la poignée 22 est déplacée dans la position intermédiaire correspondant à l'ouverture maximum de la came 12. La genouillère devient instable suite à l'alignement (voir traits en pointillés) des axes 28 et 24 avec la zone de contact de la butée 27 avec le redan 26.On the Figure 2B , the handle 22 is moved to the intermediate position corresponding to the maximum opening of the cam 12. The toggle becomes unstable following the alignment (see dotted lines) of the axes 28 and 24 with the contact zone of the stop 27 with the redan 26.

La figure 2C montre le basculement de la genouillère lors du déplacement poursuivi de la poignée 22 (flèche F3) au-delà de la position intermédiaire.The Figure 2C shows the tilting of the toggle during the continued movement of the handle 22 (arrow F3) beyond the intermediate position.

La rampe 33 coopère avec le doigt d'entraînement 20 pour faire pivoter la biellette de transmission 23 sur son axe 24.The ramp 33 cooperates with the drive finger 20 to pivot the transmission link 23 on its axis 24.

La figure 2D illustre la phase de débrayage, la liaison mécanique de la genouillère étant brisée suite à l'échappement de la biellette de transmission 23. La poignée 22 n'est plus liée à celui de la poulie 11, provoquant le retour de la came 12 vers la position de blocage.The 2D figure illustrates the disengagement phase, the mechanical connection of the toggle being broken following the exhaust of the transmission rod 23. The handle 22 is no longer linked to that of the pulley 11, causing the return of the cam 12 to the blocking position.

Sélecteur 29 dans l'état actif (figures 3A-3B)Selector 29 in the active state (FIGS. 3A-3B)

Le bouton-poussoir 30 du sélecteur 29 est maintenu enfoncé pour inhiber la fonction anti-panique.The pushbutton 30 of the selector 29 is held down to inhibit the anti-panic function.

Sur la figure 3A, la poignée 22 se trouve en position relevée, et la pression exercée sur le bouton-poussoir 30 permet d'avancer en rotation la rampe 33 le long de la périphérie de l'embase 25. La came 12 reste en position de blocage comme dans la figure 2A. L'abaissement progressif de la poignée 22 ( flèche F2) vers la position intermédiaire (figure 3B), provoque le déblocage de la corde 17 par écartement de la came 12, et la venue en butée de la face 34 inclinée de la rampe 33 contre le bossage 35 du doigt 20 avant le dépassement du point mort de la genouillère.On the figure 3A , the handle 22 is in the raised position, and the pressure exerted on the push-button 30 makes it possible to advance the ramp 33 in rotation along the periphery of the base 25. The cam 12 remains in the locking position as in the Figure 2A . The progressive lowering of the handle 22 (arrow F2) towards the intermediate position ( figure 3B ), causes the release of the rope 17 by spacing the cam 12, and the abutment of the inclined face 34 of the ramp 33 against the boss 35 of the finger 20 before exceeding the dead center of the toggle.

Tout mouvement de rotation forcée de la poignée 22 est alors impossible et inhibe le débrayage de la liaison mécanique tant que le bouton-poussoir 30 du sélecteur 29 est maintenu enfoncé. La came 12 reste en position de déblocage, et autorise le mouvement de descente de l'utilisateur.Any forced rotation movement of the handle 22 is then impossible and inhibits the disengagement of the mechanical link as the pushbutton 30 of the selector 29 is held down. The cam 12 remains in the unlocking position, and authorizes the downward movement of the user.

Le relâchement du bouton-poussoir 30 écarte la rampe 33 du bossage 35, et permet la remise en service automatique de la fonction de débrayage anti-panique.The release of the pushbutton 30 moves the ramp 33 away from the boss 35, and allows the automatic restarting of the anti-panic release function.

Tout déplacement forcé de la poignée 22 au-delà de la position intermédiaire entraîne une réaction de la face 34 inclinée de la rampe 33 sur le bossage 35 qui tend à ramener la rampe 33 en sens inverse. Ce mouvement de rotation inverse de la rampe 33 entraîne la translation du bouton-poussoir 30, et crée un effort tendant à s'opposer à celui du pousse de l'utilisateur pour maintenir le bouton-poussoir 30 enfoncé.Any forced displacement of the handle 22 beyond the intermediate position causes a reaction of the inclined face 34 of the ramp 33 on the boss 35 which tends to bring the ramp 33 in the opposite direction. This reverse rotation of the ramp 33 causes the translation of the push button 30, and creates a force tending to oppose the push of the user to maintain the push button 30 depressed.

Claims (8)

Descendeur autobloquant pour la descente le long d'une corde, comprenant: - une poulie (11) conformée en came (12) rotative entre une position de blocage de la corde (17) contre un patin (15), et une position de déblocage, - une poignée (22) d'actionnement de la poulie (11) pour assurer dans une position intermédiaire le déblocage manuel de la corde (17), - et un mécanisme (21) à liaison mécanique interruptible entre la poulie (11) et la poignée (22) après dépassement de ladite position intermédiaire provoquant le débrayage de la poulie (11) et le retour automatique de la came (12) vers la position de blocage, caractérisé en ce que le mécanisme (21) comporte de plus un sélecteur (29) accouplé à un organe de manoeuvre (32) destiné à occuper une position active ou une position inactive, respectivement pour inhiber ou autoriser ledit débrayage de la poulie (11).Self-locking descender for descent along a rope, comprising: - a pulley (11) shaped as a cam (12) rotatable between a locking position of the rope (17) against a pad (15), and a release position, - a handle (22) for actuating the pulley (11) to ensure in an intermediate position the manual release of the rope (17), - And a mechanism (21) interruptible mechanical connection between the pulley (11) and the handle (22) after exceeding said intermediate position causing the disengagement of the pulley (11) and the automatic return of the cam (12) to the blocking position, characterized in that the mechanism (21) further comprises a selector (29) coupled to an operating member (32) for occupying an active position or an inactive position, respectively to inhibit or allow said disengagement of the pulley (11) . Descendeur autobloquant selon la revendication 1, caractérisé en ce que l'organe de manoeuvre (32) du sélecteur (29) vient en butée en position active avec un bossage (35) fixe pour empêcher tout déplacement poursuivi de la poignée (22) au-delà de la position intermédiaire.Self-locking descender according to claim 1, characterized in that the operating member (32) of the selector (29) abuts in operative position with a boss (35) fixed to prevent any continued movement of the handle (22) to- beyond the intermediate position. Descendeur autobloquant selon la revendication 2, caractérisé en ce que la liaison mécanique du mécanisme (21) comporte une genouillère (20, 23) autorisant la venue de l'organe de manoeuvre (32) contre le bossage (35) avant le dépassement de point mort de ladite genouillère.Self-locking descender according to claim 2, characterized in that the mechanical connection of the mechanism (21) comprises a toggle joint (20, 23) allowing the actuating member (32) to come against the boss (35) before the stitch protrusion death of said toggle. Descendeur autobloquant selon la revendication 3, caractérisé en ce que la genouillère du mécanisme (21) est composée d'un doigt d'entraînement (20) solidaire de la poulie (11), et d'une biellette de transmission (23) montée à pivotement à l'intérieur d'une embase (25) solidaire de la poignée (22).Self-locking descender according to claim 3, characterized in that the toggle joint of the mechanism (21) is composed of a drive finger (20) secured to the pulley (11), and a transmission rod (23) pivotally mounted within a base (25) integral with the handle (22). Descendeur autobloquant selon l'une des revendications précédentes, caractérisé en ce que l'organe de manoeuvre (32) est monostable pour inhiber ledit débrayage lorsque le sélecteur (29) est maintenu dans la position active, et que le relâchement du sélecteur (29) assure la remise en service de la fonction débrayage.Self-locking descender according to one of the preceding claims, characterized in that the actuator (32) is monostable to inhibit said disengagement when the selector (29) is held in the active position, and that the release of the selector (29) ensures the return to service of the disengaging function. Descendeur autobloquant selon l'une des revendications 1 à 4, caractérisée en ce que l'organe de manoeuvre (32) est bistable à chaque impulsion de commande sur le sélecteur (29).Self-locking descender according to one of claims 1 to 4, characterized in that the operating member (32) is bistable at each control pulse on the selector (29). Descendeur autobloquant selon l'une des revendications 1 à 4, caractérisé en ce que l'organe de manoeuvre (32) comprend une rampe (33) circulaire reliée par une tringle (31) à un bouton-poussoir (30) associé à la poignée (22).Self-locking descender according to one of claims 1 to 4, characterized in that the operating member (32) comprises a circular ramp (33) connected by a rod (31) to a push button (30) associated with the handle (22). Descendeur autobloquant selon la revendication 7, caractérisé en ce que le bouton-poussoir (30) est intégré au bout de la poignée (22).Self-locking descender according to claim 7, characterized in that the push-button (30) is integrated at the end of the handle (22).
EP08354039.3A 2007-07-26 2008-06-13 Self-locking abseiling device with disengageable handle Not-in-force EP2018894B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0705481A FR2919196B1 (en) 2007-07-26 2007-07-26 AUTOBLOATING DESCENDER WITH DEBRAYABLE HANDLE.

Publications (2)

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EP2018894A1 true EP2018894A1 (en) 2009-01-28
EP2018894B1 EP2018894B1 (en) 2014-11-26

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Family Applications (1)

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EP08354039.3A Not-in-force EP2018894B1 (en) 2007-07-26 2008-06-13 Self-locking abseiling device with disengageable handle

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US (1) US8100231B2 (en)
EP (1) EP2018894B1 (en)
CN (1) CN101352600B (en)
FR (1) FR2919196B1 (en)

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GB2522179A (en) * 2013-11-14 2015-07-22 Internat Safety Components Ltd Improvements in and relating to rope descenders
FR3032354A1 (en) * 2015-02-11 2016-08-12 Zedel DESCENDOR INSURER DEVICE ON DEMULTIPLICATION ROPE AND ANTI-PANIC BLOCKAGE
CN106185676A (en) * 2016-08-30 2016-12-07 福建省东山县辉永泰体育用品实业有限公司 A kind of assembly pulley of band stop protection
WO2018111676A1 (en) * 2016-12-16 2018-06-21 3M Innovative Properties Company Fall-protection apparatus with braking system
WO2019034369A1 (en) 2017-08-16 2019-02-21 Arcelik Anonim Sirketi A range hood comprising a motor
IT201700111007A1 (en) * 2017-10-04 2019-04-04 Camp Spa DESCENDER
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US8701840B2 (en) * 2011-12-27 2014-04-22 Samantha ALLEN Self-belay device for climbers
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GB2522179A (en) * 2013-11-14 2015-07-22 Internat Safety Components Ltd Improvements in and relating to rope descenders
GB2522179B (en) * 2013-11-14 2019-02-13 Int Safety Components Ltd Improvements in and relating to rope descenders
US10716960B2 (en) 2015-02-11 2020-07-21 Zedel Belay descender device on a rope with gearing-down and anti-panic blocking
FR3032354A1 (en) * 2015-02-11 2016-08-12 Zedel DESCENDOR INSURER DEVICE ON DEMULTIPLICATION ROPE AND ANTI-PANIC BLOCKAGE
EP3056248A1 (en) 2015-02-11 2016-08-17 Zedel Descender device on rope with gear reduction and panic lock
CN106185676A (en) * 2016-08-30 2016-12-07 福建省东山县辉永泰体育用品实业有限公司 A kind of assembly pulley of band stop protection
WO2018111676A1 (en) * 2016-12-16 2018-06-21 3M Innovative Properties Company Fall-protection apparatus with braking system
US11065477B2 (en) 2016-12-16 2021-07-20 3M Innovative Properties Company Fall-protection apparatus with braking system
AU2017376676B2 (en) * 2016-12-16 2019-07-11 3M Innovative Properties Company Fall-protection apparatus with braking system
WO2019034369A1 (en) 2017-08-16 2019-02-21 Arcelik Anonim Sirketi A range hood comprising a motor
IT201700111007A1 (en) * 2017-10-04 2019-04-04 Camp Spa DESCENDER
US10987526B2 (en) 2017-10-04 2021-04-27 Camp S.P.A. Descender
EP3466492A1 (en) * 2017-10-04 2019-04-10 Camp S.p.A. Descender
FR3080045A1 (en) * 2018-04-11 2019-10-18 Zedel AUTOBLOATING DESCENDER WITH DEBRAYABLE HANDLE
EP3552668A1 (en) 2018-04-11 2019-10-16 Zedel Self-locking abseiling device with releasable handle
US11071879B2 (en) 2018-04-11 2021-07-27 Zedel Self-locking descender with disengageable handle

Also Published As

Publication number Publication date
FR2919196B1 (en) 2009-10-09
US8100231B2 (en) 2012-01-24
FR2919196A1 (en) 2009-01-30
US20090026023A1 (en) 2009-01-29
EP2018894B1 (en) 2014-11-26
CN101352600A (en) 2009-01-28
CN101352600B (en) 2011-05-04

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