WO1998024687A1 - Device for preventing a multihull boat from capsizing - Google Patents

Device for preventing a multihull boat from capsizing Download PDF

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Publication number
WO1998024687A1
WO1998024687A1 PCT/FR1997/002080 FR9702080W WO9824687A1 WO 1998024687 A1 WO1998024687 A1 WO 1998024687A1 FR 9702080 W FR9702080 W FR 9702080W WO 9824687 A1 WO9824687 A1 WO 9824687A1
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WO
WIPO (PCT)
Prior art keywords
sheet
detector
hook
release mechanism
rope
Prior art date
Application number
PCT/FR1997/002080
Other languages
French (fr)
Inventor
Bernard D'otreppe De Bouvette
Original Assignee
Aeromax S.A.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aeromax S.A.R.L. filed Critical Aeromax S.A.R.L.
Priority to AU52265/98A priority Critical patent/AU5226598A/en
Publication of WO1998024687A1 publication Critical patent/WO1998024687A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H9/00—Marine propulsion provided directly by wind power
    • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/08—Connections of sails to masts, spars, or the like
    • B63H9/10—Running rigging, e.g. reefing equipment

Definitions

  • the present invention relates to a device for preventing the capsizing of a sailing multihull, the listening of which is shocked by means of a release mechanism activated by a detector during the emersion of one of the hulls normally submerged.
  • the catamaran which is a sailboat with 2 parallel hulls and generally without ballast. Its large width gives it a strong initial stability which allows it to carry a lot of canvas, even in relatively strong winds. Furthermore, this stability considerably reduces the heel due to the thrust of the sails and makes it difficult to appreciate the moment when it is necessary to reduce the fabric. Finally, as soon as a hull is entirely taken out of the water, stability decreases rapidly. As a result, the catamaran poses a certain risk of capsizing, because as soon as a hull is out of the water, the crew has only a very short time to shock the sails before the capsizing movement is irreversible .
  • French patent No. 2 716 432 is also known, which relates only to sailboats whose sheet (s) are (are) bordered by means of a hydraulic cylinder, that is to say in general extreme multihulls for ocean racing.
  • These boats have a very large listening rail which allows to vary very little the length of the sheet itself, and this variation corresponds to the length of the hydraulic cylinder located under the boom.
  • the majority of cruising multihulls have shorter listening rails, and therefore require a larger listening stroke, which exceeds the stroke of a hydraulic cylinder.
  • very few cruising multihulls are fitted with hydraulic circuits.
  • the object of the invention is to provide a device for preventing the capsizing of a sailing multihull which is of simple construction and does not require the use of a hydraulic cylinder to border the mainsail. It adapts to boats equipped with traditional winches to border the sails.
  • the device according to the invention is characterized in that its release mechanism comprises a hook, a blocking element which can take a first so-called blocking position in which the hook is blocked and a second so-called release position releasing the hook when the mechanism release is activated by the detector, and a shackle secured to the sheet and retained by the hook when it is blocked so as to prevent the release of the sheet until the release mechanism has not been activated.
  • FIG. 1 shows a cross section of the multihull showing the various elements of the capsizing prevention device according to the invention.
  • FIG. 2 represents the release mechanism placed under the boom, seen in profile,
  • FIG. 3 shows the same mechanism seen from below.
  • FIG. 4 represents a variant of the mechanism of FIG. FIG. 3.
  • FIG. 5 represents a cam blocker provided with a hydraulic release mechanism.
  • FIG. 6 represents the hydraulic circuit associated with the blocker of FIG. 5.
  • the detectors for the emersion of the hulls are liquid level sensors, placed in a lower part of the hull or in an appendage thereof which is normally submerged.
  • each sensor is housed in a cavity (1) placed, by way of example and without limitation, at the bottom of each hull of a catamaran or at the bottom of the central hull of a trimaran.
  • the level sensor is a component of known type such as for example a small float carrying a magnet and actuating a relay controlled by magnetic field, or a pair of electrodes measuring the electrical resistance of water or a sensor based on the principle of internal reflection on a sphere of a light emitting diode and a light detector (when the liquid covers the dome, the reflection changes direction.)
  • This type of sensor is available from the supplier Honeywell, reference LLN865172- 1. These component give an "all or nothing" signal.
  • a central unit (3) receives the signals from the sensors by a control circuit (4) and controls a power relay which supplies the listening release mechanism (5) from a battery (6).
  • the upper pulley of the mainsheet tackle hoist (7) is connected to the boom by a special hoist (8) which includes fixed sheaves.
  • the rope (9) of this special hoist extends under the boom towards the front of it until the release mechanism (5).
  • the sheet release mechanism is a hook (21) rocking around an axis (30) kept closed by a rocking latch (22) linked to a jack ( 23) by means of a link (24).
  • the lock (22) carries a roller (34) which retains the hook (21).
  • the role of this roller is to reduce the force necessary for the release of the hook (21).
  • the axis (30) is integral with the frame (31) consisting of two cheeks fixed to the boom. These cheeks each comprise a lug (32) intended to prevent the fall of the shackle (25) when there is no tension in the listening system.
  • this cylinder can be hydraulic, pneumatic or electric.
  • the jack (23) is an electromagnet.
  • the hook (21) retains a shackle (25) to which the rope (9) of the special hoist (8) is fixed. In normal operation, the electromagnet (23) is not activated and its core is immobilized by a spring (26).
  • the core is immobilized by two magnets in contact with each other, namely a magnet (27) on the front end of the core and the other magnet (28 ) attached to the boom.
  • This system has the advantage of having a very clear locking of the tilting lock in the closed position, and of no longer exerting significant force once the opening of the lock has started. This corresponds well to the characteristics of the electromagnet which develops a very high initial force at the start of its stroke, but less thereafter.
  • the emersion detector controls the opening of the width.
  • the jack (23) then moves back in the direction of the arrow (35), which causes the latch (22) to tilt about its axis (33) and allows the hook (21) to tilt in the direction of the arrow ( 36).
  • It is the tension in the rope (9) which will cause the hook (21) to tip over.
  • the axis (30) is located above the traction plane of the shackle (25), which induces for the hook (21) a moment down around the axis (30).
  • the released rope (9) then shocks the special hoist. This special hoist presents for the rope circulation a certain number of curves capable of generating friction and thus slowing down the said rope.
  • the end of the rope (9) fixed to the shackle (25) has a rubber ball (29) which will act as a stop to prevent the end of the rope (9) from passing completely through the special pulleys (8).
  • the shackle (25) is also connected to a bungee cord (10), the end of which is fixed to a fixed point (11) on the boom, for example between the mechanism ( 5) and the special hoist (8).
  • the length of the bungee cord (10) is such that it begins to tighten after the shackle (25) has traveled a fraction of the width (5) - hoist (8) distance. Its tensioning will have the effect of considerably increasing the friction of the rope (9) in the pulleys of the special hoist (8) during the end of its stroke.
  • the release mechanism consists of any conventional cam blocker of a known type (41), the jaw (48) of which is usually mobile is always manually operable by the crew while the usually fixed jaw (42) is made mobile around the axis (43) and is held in place by the pressure of a piston (44).
  • a pump 50
  • the crew pressurizes the hydraulic circuit (51), above a defined pressure. This pressure feeds the cylinder (45) through the conduit (46) and keeps the piston (44) in abutment.
  • the cam blocker is used to block the rope (9) of the special hoist.
  • the central unit When the central unit controls the release (see Figure 6), it then electrically supplies a solenoid valve (52) which will open and cause the pressure in the hydraulic circuit (51) to drop, allowing the fluid to return to the reservoir (53) by the return circuit (54). The spring (47) and the thrust of the rope (9) will then retract the jaw (42) and cause the release of said rope (9).
  • a solenoid valve (52) which will open and cause the pressure in the hydraulic circuit (51) to drop, allowing the fluid to return to the reservoir (53) by the return circuit (54).
  • the spring (47) and the thrust of the rope (9) will then retract the jaw (42) and cause the release of said rope (9).
  • the detectors (1) and the central unit (3) control the release of one or more blocker (41) with cam located at any place and normally used to maintain the listening to any sail, such as a mainsail, genoa, spinnaker, gennaker or any other sail.
  • This special blocker is therefore normally used by the crew for steering the boat and for automatic release of the sheet in the event of a risk of capsizing.
  • buttons (12) connected to the central unit allow easy manual control of the release of the sheet in the event of any emergency.

Abstract

The invention concerns a device for preventing the capsizing of a multihull sailing boat whereby its sheet is hauled in by means of a jettison gear actuated by a sensor at the emergence of one of its normally immersed hulls. A sensor (1) located at the bottom of at least one hull is actuated at the emergence of this hull. The information from the sensor is delivered to a central unit (3) which actuates a jettison gear (5) releasing the sheet from the boom (15). The rigging (9) which releases this sheet travels along a winding path (8), capable of generating friction for slowing down its movement. The jettison gear consists of a tilting hook released by the action of an actuator. The invention is useful for improving safety aboard multihull sailing boats, in particular those with a small crew.

Description

DISPOSITIF DE PREVENTION DE CHAVIRAGE D'UN MULTICOQUE La présente invention concerne un dispositif de prévention de chavirage d'un multicoque à voile dont l'écoute est choquée au moyen d'un mécanisme de largage activé par un détecteur lors de l'émersion d'une des coques normalement immergée. On connaît le catamaran qui est un voilier à 2 coques parallèles et généralement démuni de lest. Sa grande largeur lui donne une forte stabilité initiale qui lui permet de porter beaucoup de toile, même dans des vents relativement forts. Par ailleurs, cette stabilité réduit considérablement la gîte due à la poussée des voiles et rend difficile à apprécier le moment ou il faut réduire la toile. Enfin, aussitôt qu'une coque est entièrement sortie de l'eau la stabilité diminue rapidement. En conséquence, le catamaran présente un certain risque de chavirage, parce qu'aussitôt qu'une coque est sortie de l'eau, l'équipage ne dispose que de très peu de temps pour choquer les voiles avant que le mouvement de chavirage soit irréversible. The present invention relates to a device for preventing the capsizing of a sailing multihull, the listening of which is shocked by means of a release mechanism activated by a detector during the emersion of one of the hulls normally submerged. We know the catamaran which is a sailboat with 2 parallel hulls and generally without ballast. Its large width gives it a strong initial stability which allows it to carry a lot of canvas, even in relatively strong winds. Furthermore, this stability considerably reduces the heel due to the thrust of the sails and makes it difficult to appreciate the moment when it is necessary to reduce the fabric. Finally, as soon as a hull is entirely taken out of the water, stability decreases rapidly. As a result, the catamaran poses a certain risk of capsizing, because as soon as a hull is out of the water, the crew has only a very short time to shock the sails before the capsizing movement is irreversible .
Le même raisonnement s'applique aux trimarans quand la coque centrale se soulève.The same reasoning applies to trimarans when the central hull lifts.
Divers dispositifs ont été proposés dans le passé pour remédier à ce problème. Ceux qui utilisent la gîte du bateau comme critère d'alarme ne sont pas satisfaisants parce que dans une mer formée le multicoque peut prendre en sécurité une gîte qui serait dangereuse par mer plate. Les dispositifs qui utilisent comme critère d'alarme la tension dans l'écoute ne sont pas suffisants parce que pour une même force inclinante, la tension dans l'écoute peut varier de façon significative selon son réglage (creux et dévers) ; par ailleurs, quand la voilure est réduite, son centre de poussée descend et le moment ou un risque de chavirage apparaît correspond à une tension d'écoute plus élevée.Various devices have been proposed in the past to remedy this problem. Those who use the list of the boat as an alarm criterion are not satisfactory because in a rough sea the multihull can safely take a list that would be dangerous in flat sea. The devices which use the tension in the sheet as an alarm criterion are not sufficient because, for the same tilting force, the tension in the sheet can vary significantly depending on its setting (dip and slope); moreover, when the airfoil is reduced, its center of thrust descends and the moment when a risk of capsizing appears corresponds to a higher listening tension.
On connaît également le brevet français n° 2 716 432 qui ne con- cerne que les voiliers dont la ou les écoutes sont bordées au moyen d'un vérin hydraulique, c'est à dire en général des multicoques extrêmes de courses océaniques. Ces bateaux ont un très grand rail d'écoute qui permet de ne faire varier que très peu la longueur de l'écoute elle-même, et cette variation correspond à la longueur du vérin hydraulique situé sous la bôme. La majorité des multicoques de croisière ont des rails d'écoute plus réduits, et ont donc besoin d'une course d'écoute plus grande, qui dépasse la course d'un vérin hydraulique. Par ailleurs, très peu de multicoques de croisière sont équipés de circuits hydrauliques. Par conséquent le but de l'invention est de fournir un dispositif de prévention du chavirage d'un multicoque à voile qui soit de construction simple et ne nécessite pas l'utilisation d'un vérin hydraulique pour border la grand-voile. Il s'adapte aux bateaux équipés de winchs traditionnels pour border les voiles. Le dispositif selon l'invention se caractérise en ce que son mécanisme de largage comprend un crochet, un élément de blocage pouvant prendre une première position dite de blocage dans laquelle le crochet est bloqué et une seconde position dite de déblocage libérant le crochet lorsque le mécanisme de largage est activé par le détecteur, et une manille solidaire de l'écoute et retenue par le crochet lorsqu'il est bloqué de façon à empêcher le largage de l'écoute tant que le mécanisme de largage n'a pas été activé.French patent No. 2 716 432 is also known, which relates only to sailboats whose sheet (s) are (are) bordered by means of a hydraulic cylinder, that is to say in general extreme multihulls for ocean racing. These boats have a very large listening rail which allows to vary very little the length of the sheet itself, and this variation corresponds to the length of the hydraulic cylinder located under the boom. The majority of cruising multihulls have shorter listening rails, and therefore require a larger listening stroke, which exceeds the stroke of a hydraulic cylinder. In addition, very few cruising multihulls are fitted with hydraulic circuits. Consequently, the object of the invention is to provide a device for preventing the capsizing of a sailing multihull which is of simple construction and does not require the use of a hydraulic cylinder to border the mainsail. It adapts to boats equipped with traditional winches to border the sails. The device according to the invention is characterized in that its release mechanism comprises a hook, a blocking element which can take a first so-called blocking position in which the hook is blocked and a second so-called release position releasing the hook when the mechanism release is activated by the detector, and a shackle secured to the sheet and retained by the hook when it is blocked so as to prevent the release of the sheet until the release mechanism has not been activated.
Les buts, objets et caractéristiques de l'invention apparaîtront mieux à la lecture de la description qui suit faite en référence aux dessins dans lesquels :The aims, objects and characteristics of the invention will appear better on reading the following description made with reference to the drawings in which:
La figure 1 représente une coupe transversale du multicoque montrant les différents éléments du dispositif de prévention du chavirage selon l'invention. La figure 2 représente le mécanisme de largage placé sous la bôme, vu de profil,Figure 1 shows a cross section of the multihull showing the various elements of the capsizing prevention device according to the invention. FIG. 2 represents the release mechanism placed under the boom, seen in profile,
La figure 3 représente le même mécanisme vu de dessous.Figure 3 shows the same mechanism seen from below.
La figure 4 représente une variante du mécanisme de la figure la figure 3. La figure 5 représente un bloqueur à came pourvu d'un mécanisme de largage hydraulique.FIG. 4 represents a variant of the mechanism of FIG. FIG. 3. FIG. 5 represents a cam blocker provided with a hydraulic release mechanism.
La figure 6 représente le circuit hydraulique associé au bloqueur de la figure 5.FIG. 6 represents the hydraulic circuit associated with the blocker of FIG. 5.
Selon un mode particulier de réalisation, les détecteurs de l'émersion des coques sont des capteurs de niveau de liquide, placés dans une partie basse de la coque ou dans un appendice de celle-ci qui est normalement immergé.According to a particular embodiment, the detectors for the emersion of the hulls are liquid level sensors, placed in a lower part of the hull or in an appendage thereof which is normally submerged.
Comme illustré sur la figure 1, chaque capteur est logé dans une cavité ( 1) placée, à titre exemplatif et non limitatif, au fond de chaque coque d'un catamaran ou au fond de la coque centrale d'un trimaran.As illustrated in FIG. 1, each sensor is housed in a cavity (1) placed, by way of example and without limitation, at the bottom of each hull of a catamaran or at the bottom of the central hull of a trimaran.
Cette cavité communique, vers le bas, avec la mer, et vers le haut, avec un tuyau de mise à l'air libre (2) remontant haut dans la coque ou vers l'extérieur. Le capteur de niveau est un composant de type connu comme par exemple un petit flotteur portant un aimant et actionnant un relais commandé par champ magnétique, ou une paire d'électrodes mesurant la résistance électrique de l'eau ou un capteur basé sur le principe de la réflexion interne sur une sphère d'une diode électroluminescente et d'un détecteur de lumière (lorsque le liquide couvre le dôme, la réflexion change de direction.) Ce type de capteur est disponible chez le fournisseur Honeywell, référence LLN865172- 1. Ces composant donnent un signal de type « tout ou rien ».This cavity communicates, downwards, with the sea, and upwards, with a vent pipe (2) rising high in the hull or outwards. The level sensor is a component of known type such as for example a small float carrying a magnet and actuating a relay controlled by magnetic field, or a pair of electrodes measuring the electrical resistance of water or a sensor based on the principle of internal reflection on a sphere of a light emitting diode and a light detector (when the liquid covers the dome, the reflection changes direction.) This type of sensor is available from the supplier Honeywell, reference LLN865172- 1. These component give an "all or nothing" signal.
Une unité centrale (3) reçoit les signaux des capteurs par un circuit de commande (4) et commande un relais de puissance qui alimente le mécanisme de largage de l'écoute (5) à partir d'une batterie (6). Selon un mode particulier de réalisation, la poulie supérieure du palan d'écoute de grand voile (7) est reliée à la bôme par un palan spécial (8) qui comporte des réas fixes. Le cordage (9) de ce palan spécial se prolonge sous la bôme vers l'avant de celle-ci jusqu'au mécanisme de largage (5). Dans un premier mode de réalisation (voir figure 2 et 3), le mécanisme de largage d'écoute est un crochet (21) basculant autour d'un axe (30) maintenu fermé par un verrou basculant (22) lié à un vérin (23) par l'intermédiaire d'une biellette (24). Le verrou (22) porte un galet (34) qui retient le crochet (21). Le rôle de ce galet est de réduire la force nécessaire pour la libération du crochet (21). L'axe (30) est solidaire du bâti (31) constitué de deux joues fixées à la bôme. Ces joues comportent chacune un ergot (32) destiné à empêcher la chute de la manille (25) quand il n'y a pas de tension dans le système d'écoute. A titre exemplatif et non limitatif, ce vérin peut être hydraulique, pneumatique ou électrique. Dans ce mode de réalisation, le vérin (23) est un électroaimant. Le crochet (21) retient une manille (25) à laquelle est fixé le cordage (9) du palan spécial (8). En marche normale, l'électro-aimant (23) n'est pas activé et son noyau est immobilisé par un ressort (26). Selon un autre mode de réalisation (voir figure 4), le noyau est immobilisé par deux aimants en contact l'un avec l'autre, à savoir un aimant (27) sur l'extrémité avant du noyau et l'autre aimant (28) fixé à la bôme. Ce système présente l'avantage d'avoir un verrouillage très net du verrou basculant en position fermé, et de ne plus exercer de force significative une fois l'ouverture du verrou amorcée. Ceci correspond bien aux caractéristiques de l'électro-aimant qui développe une force initiale très élevée au début de sa course, mais moindre ensuite.A central unit (3) receives the signals from the sensors by a control circuit (4) and controls a power relay which supplies the listening release mechanism (5) from a battery (6). According to a particular embodiment, the upper pulley of the mainsheet tackle hoist (7) is connected to the boom by a special hoist (8) which includes fixed sheaves. The rope (9) of this special hoist extends under the boom towards the front of it until the release mechanism (5). In a first embodiment (see FIGS. 2 and 3), the sheet release mechanism is a hook (21) rocking around an axis (30) kept closed by a rocking latch (22) linked to a jack ( 23) by means of a link (24). The lock (22) carries a roller (34) which retains the hook (21). The role of this roller is to reduce the force necessary for the release of the hook (21). The axis (30) is integral with the frame (31) consisting of two cheeks fixed to the boom. These cheeks each comprise a lug (32) intended to prevent the fall of the shackle (25) when there is no tension in the listening system. By way of example and not limitation, this cylinder can be hydraulic, pneumatic or electric. In this embodiment, the jack (23) is an electromagnet. The hook (21) retains a shackle (25) to which the rope (9) of the special hoist (8) is fixed. In normal operation, the electromagnet (23) is not activated and its core is immobilized by a spring (26). According to another embodiment (see FIG. 4), the core is immobilized by two magnets in contact with each other, namely a magnet (27) on the front end of the core and the other magnet (28 ) attached to the boom. This system has the advantage of having a very clear locking of the tilting lock in the closed position, and of no longer exerting significant force once the opening of the lock has started. This corresponds well to the characteristics of the electromagnet which develops a very high initial force at the start of its stroke, but less thereafter.
En cas de soulèvement d'une coque, le détecteur d'émersion commande l'ouverture du largueur. Le vérin (23) recule alors dans le sens de la flèche (35), ce qui entraîne le basculement du verrou (22) autour de son axe (33) et permet le basculement du crochet (21) dans le sens de la flèche (36). C'est la tension dans le cordage (9) qui va provoquer le basculement du crochet (21). En effet, l'axe (30) est situé au dessus du plan de traction de la manille (25), ce qui induit pour le crochet (21) un moment vers le bas autour de l'axe (30). Le cordage (9) libéré choque alors le palan spécial. Ce palan spécial présente pour la circulation du cordage un certain nombre de courbes propres à générer de la friction et à ralentir ainsi le dit cordage. L'extrémité du cordage (9) fixé à la manille (25) comporte une boule de caoutchouc (29) qui servira de butée afin d'empêcher l'extrémité du cordage (9) de passer complètement dans les poulies spéciales (8). Afin de ralentir le mouvement de libération du cordage (9), la manille (25) est également reliée à un sandow ( 10) dont l'extrémité est fixée à un point fixe (11) sur la bôme, par exemple entre le mécanisme (5) et le palan spécial (8). La longueur du sandow ( 10) est telle qu'il commence à se tendre après que la manille (25) ait parcouru une fraction de la distance largueur (5) - palan (8). Sa mise en tension aura pour effet d'augmenter considérablement la friction du cordage (9) dans les poulies du palan spécial (8) durant la fin de sa course.In the event of a hull lifting, the emersion detector controls the opening of the width. The jack (23) then moves back in the direction of the arrow (35), which causes the latch (22) to tilt about its axis (33) and allows the hook (21) to tilt in the direction of the arrow ( 36). It is the tension in the rope (9) which will cause the hook (21) to tip over. Indeed, the axis (30) is located above the traction plane of the shackle (25), which induces for the hook (21) a moment down around the axis (30). The released rope (9) then shocks the special hoist. This special hoist presents for the rope circulation a certain number of curves capable of generating friction and thus slowing down the said rope. The end of the rope (9) fixed to the shackle (25) has a rubber ball (29) which will act as a stop to prevent the end of the rope (9) from passing completely through the special pulleys (8). In order to slow the movement of release of the rope (9), the shackle (25) is also connected to a bungee cord (10), the end of which is fixed to a fixed point (11) on the boom, for example between the mechanism ( 5) and the special hoist (8). The length of the bungee cord (10) is such that it begins to tighten after the shackle (25) has traveled a fraction of the width (5) - hoist (8) distance. Its tensioning will have the effect of considerably increasing the friction of the rope (9) in the pulleys of the special hoist (8) during the end of its stroke.
Dans un autre mode de réalisation (voir figure 5), le mécanisme de largage est constitué d'un bloqueur à came traditionnel quelconque d'un type connu (41), dont la mâchoire (48) habituellement mobile est toujours actionnable manuellement par l'équipage tandis que la mâchoire (42) habituellement fixe est rendue mobile autour de l'axe (43) et est tenue en place par la pression d'un piston (44). Pendant la marche normale (voir figure 6), à l'aide d'une pompe (50), l'équipage met en pression le circuit hydraulique (51), au delà d'une pression définie. Cette pression alimente le cylindre (45) par le conduit (46) et maintient le piston (44) en butée. Dans ce mode de réalisation de l'invention, le bloqueur à came est utilisé pour bloquer le cordage (9) du palan spécial. Quand l'unité centrale commande le largage (voir figure 6), elle alimente alors électriquement une électrovanne (52) qui va s'ouvrir et faire chuter la pression dans le circuit hydraulique (51) en laissant le fluide retourner au réservoir (53) par le circuit de retour (54). Le ressort (47) et la poussée du cordage (9) vont alors rétracter la mâchoire (42) et entraîner la libération dudit cordage (9).In another embodiment (see FIG. 5), the release mechanism consists of any conventional cam blocker of a known type (41), the jaw (48) of which is usually mobile is always manually operable by the crew while the usually fixed jaw (42) is made mobile around the axis (43) and is held in place by the pressure of a piston (44). During normal operation (see Figure 6), using a pump (50), the crew pressurizes the hydraulic circuit (51), above a defined pressure. This pressure feeds the cylinder (45) through the conduit (46) and keeps the piston (44) in abutment. In this embodiment of the invention, the cam blocker is used to block the rope (9) of the special hoist. When the central unit controls the release (see Figure 6), it then electrically supplies a solenoid valve (52) which will open and cause the pressure in the hydraulic circuit (51) to drop, allowing the fluid to return to the reservoir (53) by the return circuit (54). The spring (47) and the thrust of the rope (9) will then retract the jaw (42) and cause the release of said rope (9).
Selon un autre mode de réalisation de l'invention, les détecteurs ( 1) et l'unité centrale (3) commandent la libération d'un ou plusieurs bloqueur (41) à came situé à un endroit quelconque et servant normalement à maintenir l'écoute d'une voile quelconque, comme par exemple, une grand-voile, un génois, un spinnaker, un gennaker ou toute autre voile. Ce bloqueur spécial est donc utilisé normalement par l'équipage pour la conduite du bateau et pour la libération automatique de l'écoute en cas de risque de chavirage.According to another embodiment of the invention, the detectors (1) and the central unit (3) control the release of one or more blocker (41) with cam located at any place and normally used to maintain the listening to any sail, such as a mainsail, genoa, spinnaker, gennaker or any other sail. This special blocker is therefore normally used by the crew for steering the boat and for automatic release of the sheet in the event of a risk of capsizing.
Par ailleurs, un ou plusieurs boutons ( 12) reliés à l'unité centrale permettent facilement de commander manuellement le largage de l'écoute dans le cas d'une urgence quelconque. Furthermore, one or more buttons (12) connected to the central unit allow easy manual control of the release of the sheet in the event of any emergency.

Claims

REVENDICATIONS
1) Dispositif de prévention du chavirage d'un multicoque comportant au moins une voile ( 13) comme système de propulsion, dont1) Device for preventing the capsizing of a multihull comprising at least one sail (13) as propulsion system, of which
'"5 l'écoute ( 16) est choquée au moyen d'un mécanisme de largage (5) activé par au moins un détecteur ( 1) lors de l'émersion d'une des coques normalement immergée ; ledit dispositif étant caractérisé en ce que ledit mécanisme de largage comprend :'"5 the sheet (16) is shocked by means of a release mechanism (5) activated by at least one detector (1) during the emergence of one of the normally submerged hulls; said device being characterized in that that said release mechanism comprises:
- un crochet (21),- a hook (21),
10 - un élément de blocage (22) pouvant prendre une première position dite de blocage dans laquelle ledit crochet est bloqué, et une seconde position dite de déblocage libérant ledit crochet lorsque ledit mécanisme de largage est activé par ledit détecteur, et10 - a blocking element (22) capable of assuming a first so-called blocking position in which said hook is locked, and a second so-called unlocking position releasing said hook when said release mechanism is activated by said detector, and
- une manille (25) solidaire de ladite écoute et retenue par ledit crochet 15 lorsqu'il est bloqué de façon à empêcher le largage de l'écoute tant que ledit mécanisme de largage n'a pas été activé.- A shackle (25) integral with said sheet and retained by said hook 15 when it is blocked so as to prevent the release of the sheet as long as said release mechanism has not been activated.
2) Dispositif selon la revendication 1 , caractérisé en ce que ledit élément de blocage (22) comporte une butée (34) et ledit crochet est 0 mobile autour d'un axe et comporte une encoche pour retenir ladite manille tant que l'écoute n'a pas été larguée.2) Device according to claim 1, characterized in that said blocking element (22) comprises a stop (34) and said hook is 0 movable about an axis and comprises a notch for retaining said shackle as long as the sheet n has not been released.
3) Dispositif selon la revendication 1 ou 2, caractérisé en ce que ledit élément de blocage (22) basculant qui libère ledit crochet (21) 5 comporte un galet circulaire (destiné à réduire les frictions) servant de butée pour bloquer le crochet (21).3) Device according to claim 1 or 2, characterized in that said tilting blocking element (22) which releases said hook (21) 5 comprises a circular roller (intended to reduce friction) serving as a stop for blocking the hook (21 ).
4) Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le ledit détecteur ( 1) est un flotteur portant un aimant et activant un 0 relais commandé par champ magnétique, susceptible de commander un relais actionnant ledit mécanisme de largage (5).4) Device according to one of claims 1 to 3, characterized in that said detector (1) is a float carrying a magnet and activating a 0 relay controlled by magnetic field, capable of controlling a relay actuating said release mechanism ( 5).
5) Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que ledit détecteur ( 1) est constitué d'une paire d'électrodes mesurant la 5 résistance électrique de l'eau et dont le signal traité par l'unité centrale (3) est susceptible de commander un relais actionnant ledit mécanisme de largage (5).5) Device according to one of claims 1 to 3, characterized in that said detector (1) consists of a pair of electrodes measuring the electrical resistance of water and whose signal processed by the central unit (3) is capable of controlling a relay actuating said release mechanism (5).
6) Dispositif selon l'une des revendications 1 à 3, caractérisé en ce 0 que ledit détecteur ( 1) est constitué d'un capteur basé sur le principe de la réflexion interne sur une sphère d'une diode électroluminescente et d'un détecteur de lumière et dont le signal traité par l'unité centrale (3) est susceptible de commander un relais actionnant ledit mécanisme de largage (5).6) Device according to one of claims 1 to 3, characterized in that said detector (1) consists of a sensor based on the principle of internal reflection on a sphere of a light emitting diode and a detector of light and whose signal processed by the central unit (3) is capable of controlling a relay actuating said release mechanism (5).
4545
7), Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que ledit détecteur ( 1) est situé dans une cavité qui communique avec l'eau extérieure par le bas et avec l'atmosphère par le haut au moyen d'un tuyau (2). 8) Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que ledit détecteur est positionné soit en zone inférieure de l'une des deux coques d'un catamaran ou de la coque centrale d'un trimaran, soit7), Device according to one of claims 1 to 6, characterized in that said detector (1) is located in a cavity which communicates with the external water from below and with the atmosphere from above by means of a pipe (2). 8) Device according to one of claims 1 to 7, characterized in that said detector is positioned either in the lower zone of one of the two hulls of a catamaran or of the central hull of a trimaran, or
" 5 encore au niveau inférieur de l'un des appendices d'un multicoque, susceptibles d'être en permanence dans l'eau en fonctionnement normal."5 still at the lower level of one of the appendages of a multihull, likely to be permanently in the water during normal operation.
9) Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que ledit mécanisme de largage de ladite écoute de grand-voile est situé9) Device according to one of claims 1 to 8, characterized in that said release mechanism of said mainsail sheet is located
10 sous la bôme ( 15) de sorte que ledit mécanisme n'interfère pas avec la conduite normale des voiles du bateau.10 under the boom (15) so that said mechanism does not interfere with the normal handling of the sails of the boat.
10) Dispositif selon la des revendication 1, caractérisé en ce que la dite manille est accrochée à l'écoute au moyen d'un cordage (9) qui10) Device according to claim 1, characterized in that said shackle is attached to the sheet by means of a cord (9) which
15 chemine dans un parcours présentant des courbes successives propres à générer de la friction afin de ralentir la course dudit cordage.15 travels in a course having successive curves capable of generating friction in order to slow down the course of said rope.
1 1) Dispositif selon la revendication 10, caractérisé en ce que ledit cordage (9) est retenu par un sandow dont la mise en tension progressive1 1) Device according to claim 10, characterized in that said rope (9) is retained by a bungee cord whose progressive tensioning
20 va augmenter la friction dans les courbes successives du parcours dudit cordage.20 will increase the friction in the successive curves of the course of said rope.
25 25
PCT/FR1997/002080 1996-12-05 1997-11-19 Device for preventing a multihull boat from capsizing WO1998024687A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU52265/98A AU5226598A (en) 1996-12-05 1997-11-19 Device for preventing a multihull boat from capsizing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9615176A FR2756808B1 (en) 1996-12-05 1996-12-05 DEVICE FOR PREVENTING THE CAPPING OF A SAILING MULTIHULL WHICH IS LISTENED BY A SHOCKING MECHANISM ACTIVATED BY A DETECTOR WHEN ONE OF THE NORMALLY UNDERWATER HULLS EMERGENCES
FR96/15176 1996-12-05

Publications (1)

Publication Number Publication Date
WO1998024687A1 true WO1998024687A1 (en) 1998-06-11

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PCT/FR1997/002080 WO1998024687A1 (en) 1996-12-05 1997-11-19 Device for preventing a multihull boat from capsizing

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AU (1) AU5226598A (en)
FR (1) FR2756808B1 (en)
WO (1) WO1998024687A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010111731A1 (en) * 2009-03-31 2010-10-07 Karsten Jarke Sailing vessel control device and system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2904601B1 (en) * 2006-08-07 2008-10-10 Vincent Flouriot AUTOMATIC LISTENING DEVICE FOR LISTENING
EP2014548B1 (en) 2007-07-11 2012-02-22 Harken Italy S.p.A. Device for actuating sheets of sailing boats
FR3109989B1 (en) * 2020-05-07 2022-04-22 Nexter Systems Device for extracting a large-caliber projectile stuck in the tube of an artillery piece

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458454A1 (en) * 1979-06-13 1981-01-02 Tabarly Eric Rigging cleat with manual release - comprises trolley on slide carrying clamp for rigging and hydraulic cylinder to control tension
FR2677602A1 (en) * 1991-06-11 1992-12-18 Lacan Guy System of interdependent jammers (jamming devices) for tackles for mainsail sheet travellers (carriages) and the like
FR2716432A1 (en) 1994-02-24 1995-08-25 Multiplast Anti-Capsize activation device for Trimaran sailing boats

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2458454A1 (en) * 1979-06-13 1981-01-02 Tabarly Eric Rigging cleat with manual release - comprises trolley on slide carrying clamp for rigging and hydraulic cylinder to control tension
FR2677602A1 (en) * 1991-06-11 1992-12-18 Lacan Guy System of interdependent jammers (jamming devices) for tackles for mainsail sheet travellers (carriages) and the like
FR2716432A1 (en) 1994-02-24 1995-08-25 Multiplast Anti-Capsize activation device for Trimaran sailing boats

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010111731A1 (en) * 2009-03-31 2010-10-07 Karsten Jarke Sailing vessel control device and system
US8726824B2 (en) 2009-03-31 2014-05-20 Karsten Jarke Sailing vessel control device and system

Also Published As

Publication number Publication date
AU5226598A (en) 1998-06-29
FR2756808B1 (en) 1999-05-21
FR2756808A1 (en) 1998-06-12

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