EP0979194A2 - Water sport machine - Google Patents

Water sport machine

Info

Publication number
EP0979194A2
EP0979194A2 EP98922902A EP98922902A EP0979194A2 EP 0979194 A2 EP0979194 A2 EP 0979194A2 EP 98922902 A EP98922902 A EP 98922902A EP 98922902 A EP98922902 A EP 98922902A EP 0979194 A2 EP0979194 A2 EP 0979194A2
Authority
EP
European Patent Office
Prior art keywords
craft according
nozzle
water
nautical
nautical leisure
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
EP98922902A
Other languages
German (de)
French (fr)
Other versions
EP0979194B1 (en
Inventor
Marcel Bellens
Franck Mauvigner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OXOON Sarl
Original Assignee
Mauvigner Franck
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 Mauvigner Franck filed Critical Mauvigner Franck
Publication of EP0979194A2 publication Critical patent/EP0979194A2/en
Application granted granted Critical
Publication of EP0979194B1 publication Critical patent/EP0979194B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H25/08—Steering gear
    • B63H25/10—Steering gear with mechanical transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
    • B63B1/041—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull with disk-shaped hull
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B34/00—Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure
    • B63B34/10—Power-driven personal watercraft, e.g. water scooters; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B34/00—Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure
    • B63B34/50—Body-supporting buoyant devices, e.g. bathing boats or water cycles
    • B63B34/52—Inflatable or partly inflatable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B5/00—Hulls characterised by their construction of non-metallic material
    • B63B5/24—Hulls characterised by their construction of non-metallic material made predominantly of plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/02—Fenders integral with waterborne vessels or specially adapted therefor, e.g. fenders forming part of the hull or incorporated in the hull; Rubbing-strakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/02—Fenders integral with waterborne vessels or specially adapted therefor, e.g. fenders forming part of the hull or incorporated in the hull; Rubbing-strakes
    • B63B2059/025—Fenders integral with waterborne vessels or specially adapted therefor, e.g. fenders forming part of the hull or incorporated in the hull; Rubbing-strakes pneumatic, e.g. inflatable
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems

Definitions

  • the present invention relates to a motorized nautical leisure vehicle. More particularly, it relates to beach machines of the "hydrojet" type.
  • the devices known in the prior art are adapted to sports practices, by experienced users accepting relatively high operating costs.
  • the object of the present invention is to remedy these various drawbacks, and to reconcile the various constraints, by proposing a nautical leisure vehicle constituted by a hull provided with a propellant of the low power hydrojet type.
  • the power of the motor is less than 5KW, for example 4KW.
  • the payload allows the boarding of 3 people for navigation in category 6.
  • the shell has a peripheral rim to receive an inflatable envelope of shape annular.
  • the inflatable envelope has an annular shape having at its rear part a cutout for the passage of a rigid segment comprising the directional nozzle.
  • the overall width is greater than 0.8 times the overall length.
  • the rigid segment is extended by a mast supporting a sun visor.
  • the propellant is constituted by a low power motor associated with a water suction propeller placed in a suction box opening into the bottom of the hull, the outlet of the suction box opening in a nozzle having a decreasing section and a helical wall.
  • the propeller has three blades in the form of helical ramps extending a substantially cylindrical hub.
  • the nozzle has a water intake in the area of large section for cooling the engine.
  • FIG. 1 shows a rear view of one machine
  • FIG. 3 shows a perspective view of the inflatable envelope
  • FIG. 5 shows a detailed view of the control handle;
  • Figure 6 shows a sectional view of an alternative embodiment of the shell.
  • FIG. 1 represents a front view of the machine according to an exemplary embodiment of the invention.
  • This machine consists of a chassis made of pressed sheet steel or of molded plastic material having a peripheral rim on which is mounted an annular buoyancy reserve (1).
  • This inflatable buoyancy reserve is divided into several compartments for safety reasons. It has handling straps (2) facilitating the porting of the machine.
  • the chassis is surmounted by a rigid shell (3) of molded plastic. It has a hemispherical front part (4) provided with a hatch (8) for filling the fuel tank. The middle part is lowered and forms the footrest. It also has a raised part (6) forming the seats.
  • the rear part (9) forms a trunk divided into an upper compartment for receiving accessories or bags from the user, and a lower compartment containing the propellant.
  • the machine is surmounted by a sun visor (11). It also comprises a lever (12) for controlling the direction and the operation of the thruster.
  • FIG. 2 shows a rear view of the machine.
  • the rear part (9) of the shell has a hatch (12) allowing access to a storage chest.
  • the sun visor (11) is supported by a mast (13) held by a rigid base (14) fixed to the chassis.
  • the ends of the buoyancy tank (1) are also fixed to this rigid base (14).
  • This base has a cutout for the directional nozzle (15).
  • FIG 3 shows a detailed view of the buoyancy reserve. It consists of an inflatable element of generally annular shape, the rear part has a cutout (16) of complementary shape to the rigid base (14) which fits into this cutout. The two front faces (17, 18) are fixed on the base (14) by bolts or any equivalent means.
  • Carrying straps (2) are attached to the edge of the buoyancy reserve. Valves (20) allow the various compartments to be inflated.
  • Figure 4 shows an exploded view of the powertrain. It comprises, in addition to a heat engine not shown, a nozzle (21) and a water intake element (22).
  • the intake element (22) is formed by a cylindrical piece mounted on the bottom of the chassis by Silentblocks or damping means and capable of reducing noise and the transmission of vibrations.
  • the intake element is composed of an inner tubular part (24) and a base (25) has a disc (26) for fixing on the bottom of the chassis extended by a tubular part ( 27).
  • the connection between the inner tubular part (24) on which the nozzle (21) is secured, and the outer part (25) is effected by an elastic seal (28) ensuring the fixing functions, limiting the transmission of vibrations and sealing.
  • the intake element (22) opens on the bottom of the chassis, in a direction substantially perpendicular to the bottom, by means of a protective grid (23).
  • the other end of the intake element (22) has a collar (29) for fixing to the nozzle (21).
  • a propeller (30) Inside the intake element (22) is placed a propeller (30) whose shape evokes that of a meat grinder. It has three helical blades (31 to 33) welded to a hub (34) of cylindrical shape and preferably conical, diverging upstream. A connecting pin (35) provides the connection with the heat engine. This connecting axis passes through a guide (37) fixed on the nozzle, and is held by bearings (36).
  • the nozzle has a front inlet, oriented downward, and a radial outlet, oriented rearward, perpendicular to the direction of intake. It has a decreasing interior section, and a helical wall causing an acceleration of the water jet.
  • Another outlet (41) disposed on the ejection pipe (42) performs the suction function of the stagnant water possibly at the bottom of the chassis.
  • a directional nozzle (43) articulated on the end of the ejection tube (42) ensures the orientation of the jet in the horizontal plane.
  • This directional nozzle (43) is controlled by the handle (12). The connection is ensured by a single cable.
  • FIG. 5 shows a detailed view of the control handle.
  • the handle consists of a rod
  • the rod (50) provided at its end with a trackball (51).
  • the rod (50) is articulated around two perpendicular axes.
  • the first axis is defined by a hemispherical cup (52) movable relative to a hemispherical base (53)
  • This base has an annular chute (55) for collecting water drops and dust.
  • This chute opens onto the outer surface of the hull through an evacuation slot.
  • the base is extended by a fixing plate (56) for mounting on the shell having for this purpose a circular hole.
  • the second axis is constituted by a pivot
  • the end (60) of a cable is fixed to the lower part (61) of the rod.
  • the cable has a sheath stopped by a stop (59). This cable is connected to the control arm of the engine accelerator.
  • the rod In the perpendicular direction, the rod has a second anchor point (62) of a means for controlling the directional nozzle.
  • Figure 6 shows a sectional view of an alternative embodiment of the shell.
  • the shell is produced in the form of a rigid structure, for example by molding a material such as P.V.C.
  • the shell is made in two parts: a lower part, comprising the entire floating part, and an upper part forming a cover comprising the visible parts.
  • the junction line is provided above the waterline.
  • the hull section is approximately circular.
  • the two parts are connected along a belt line by gluing.
  • the upper part forms a cover comprising housings for organs such as the engine or the batteries.
  • This shell has an annular outer casing (100) on which is glued a honeycomb crown (101) forming a shock absorber.
  • This crown has a section in the shape of an arc of a circle, and has longitudinal channels giving it elasticity.
  • This crown (101) is produced by extruding a material such as P.V.C.

Abstract

The invention concerns a water sport machine consisting of a hull equipped with a pump-jet, the hull is rigid and provided with an inflatable envelope. The pump-jet consists of a light duty engine combined with a water sucking propeller located in a suction box opening into the hull bottom, the outlet of the suction box opening into a nozzle with decreasing cross-section and a helical wall.

Description

ENGIN DE LOISIR NAUTIQUE MOTORISE. MOTORIZED NAUTICAL LEISURE MACHINE.
La présente invention concerne un engin de loisir nautique motorisé. Plus particulièrement, elle concerne les engins de plage de type "hydrojet".The present invention relates to a motorized nautical leisure vehicle. More particularly, it relates to beach machines of the "hydrojet" type.
Les engins connus dans 1 ' état de la technique sont adaptés à des pratiques sportives, par des utilisateurs avertis acceptant des coûts d'utilisation relativement élevés.The devices known in the prior art are adapted to sports practices, by experienced users accepting relatively high operating costs.
Ils ne sont pas adaptés à l'utilisation sous forme d'engins de plage, généralement en location. De tels engins doivent répondre à des contraintes bien particulières. En effet, de tels engins doivent être de construction très robustes pour présenter une fiabilité sans failles. Ils sont utilisés plusieurs heures par jours, par des utilisateurs peu soigneux. L'entretien et la maintenance doivent donc être réduits au minimum. Le coût de fonctionnement doit par ailleurs être faible, et l'autonomie importante. Cette solution pourrait être atteinte par une sous-motorisation. De tels engins seraient alors peu attractifs.They are not suitable for use in the form of beach equipment, generally for hire. Such devices must meet very specific constraints. Indeed, such devices must be very robust construction to have flawless reliability. They are used several hours a day by careless users. Upkeep and maintenance should therefore be kept to a minimum. The operating cost must also be low, and the autonomy important. This solution could be achieved by underpowering. Such devices would then be unattractive.
L'objet de la présente invention est de remédier à ces différents inconvénients, et de concilier les différentes contraintes, en proposant un engin de loisir nautique constitué par une coque munie d'un propulseur de type hydrojet de faible puissance.The object of the present invention is to remedy these various drawbacks, and to reconcile the various constraints, by proposing a nautical leisure vehicle constituted by a hull provided with a propellant of the low power hydrojet type.
Typiquement, pour un engin dont la longueur hors tout est de l'ordre de 2,50 m, et la largeur hors tout de 2,05m, la puissance du moteur est inférieure à 5KW, par exemple 4KW.Typically, for a machine whose overall length is of the order of 2.50 m, and the overall width of 2.05 m, the power of the motor is less than 5KW, for example 4KW.
La charge utile permet l'embarquement de 3 personnes pour une navigation en catégorie 6.The payload allows the boarding of 3 people for navigation in category 6.
Avantageusement, la coque présente une jante périphérique pour recevoir une enveloppe gonflable de forme annulaire. Selon une variante particulière, la enveloppe gonflable présente une forme annulaire présentant à sa partie arrière une découpe pour le passage d'un segment rigide comprenant la tuyère directionnelle. De préférence, la largeur hors tout est supérieure à 0,8 fois la longueur hors tout.Advantageously, the shell has a peripheral rim to receive an inflatable envelope of shape annular. According to a particular variant, the inflatable envelope has an annular shape having at its rear part a cutout for the passage of a rigid segment comprising the directional nozzle. Preferably, the overall width is greater than 0.8 times the overall length.
De préférence, le segment rigide est prolongé par un mât supportant un pare-soleil. Selon une autre variante préférée, le propulseur est constitué par un moteur de faible puissance associé à une hélice d'aspiration d'eau placée dans une boîte d'aspiration débouchant dans le fond de la coque, la sortie de la boîte d'aspiration débouchant dans une tuyère présentant une section décroissante et une paroi hélicoïdale. Avantageusement, l'hélice présente trois pâles en forme de rampes hélicoïdales prolongeant un moyeu sensiblement cylindrique.Preferably, the rigid segment is extended by a mast supporting a sun visor. According to another preferred variant, the propellant is constituted by a low power motor associated with a water suction propeller placed in a suction box opening into the bottom of the hull, the outlet of the suction box opening in a nozzle having a decreasing section and a helical wall. Advantageously, the propeller has three blades in the form of helical ramps extending a substantially cylindrical hub.
Selon un mode de réalisation préféré, la tuyère présente dans la zone de forte section une prise d'eau pour le refroidissement du moteur.According to a preferred embodiment, the nozzle has a water intake in the area of large section for cooling the engine.
L'invention sera mieux comprise à la lecture de la description qui suit, se référant à un exemple de réalisation non limitatif, illustré par les dessins annexés où : - la figure 1 représente une vue de face deThe invention will be better understood on reading the description which follows, referring to a nonlimiting exemplary embodiment, illustrated by the appended drawings in which: - Figure 1 represents a front view of
1 ' engin selon 1 ' invention :1 machine according to the invention:
- la figure 2 représente une vue arrière de 1 ' engin ;- Figure 2 shows a rear view of one machine;
- la figure 3 représente une vue en perspective de l'enveloppe gonflable ;- Figure 3 shows a perspective view of the inflatable envelope;
- la figure 4 représente une vue éclatée du propulseur ;- Figure 4 shows an exploded view of the propellant;
- la figure 5 représente une vue en détail de la manette de commande ; la figure 6 représente une vue en coupe d'une variante de réalisation de la coque.- Figure 5 shows a detailed view of the control handle; Figure 6 shows a sectional view of an alternative embodiment of the shell.
La figure 1 représente une vue de face de l'engin selon un exemple de réalisation de l'invention. Cet engin est constitué par un châssis en tôle d'acier emboutie ou en matière plastique moulée présentant une jante périphérique sur laquelle est montée une réserve de flottabilité annulaire (1) . Cette réserve de flottabilité gonflable est divisée en plusieurs compartiments pour des questions de sécurité. Elle présente des lanières de manutention (2) facilitant le portage de l'engin. Le châssis est surmonté d'une coque rigide (3) en matière plastique moulée. Elle présente une partie avant (4) hémisphérique munie d'une trappe (8) pour le remplissage du réservoir d'essence. La partie médiane est abaissée et forme le repose-pied. Elle présente également une partie (6) surélevée formant les sièges. La partie arrière (9) forme un coffre divisé en un compartiment supérieure pour recevoir des accessoires ou des sacs de l'utilisateur, et un compartiment inférieur renfermant le propulseur. L'engin est surmonté par un pare-soleil (11) . Il comporte par ailleurs une manette (12) pour commander la direction et le fonctionnement du propulseur.FIG. 1 represents a front view of the machine according to an exemplary embodiment of the invention. This machine consists of a chassis made of pressed sheet steel or of molded plastic material having a peripheral rim on which is mounted an annular buoyancy reserve (1). This inflatable buoyancy reserve is divided into several compartments for safety reasons. It has handling straps (2) facilitating the porting of the machine. The chassis is surmounted by a rigid shell (3) of molded plastic. It has a hemispherical front part (4) provided with a hatch (8) for filling the fuel tank. The middle part is lowered and forms the footrest. It also has a raised part (6) forming the seats. The rear part (9) forms a trunk divided into an upper compartment for receiving accessories or bags from the user, and a lower compartment containing the propellant. The machine is surmounted by a sun visor (11). It also comprises a lever (12) for controlling the direction and the operation of the thruster.
La figure 2 représente une vue arrière de l'engin. La partie arrière (9) de la coque présente une trappe (12) permettant l'accès à un coffre de rangement. Dans l'exemple de réalisation décrit, le pare-soleil (11) est supporté par un mât (13) maintenu par une embase rigide (14) fixée sur le châssis. Les extrémités du réservoir de flottabilité (1) sont également fixées sur cette embase rigide (14) . Cette embase présente une découpe pour la tuyère directionnel (15).Figure 2 shows a rear view of the machine. The rear part (9) of the shell has a hatch (12) allowing access to a storage chest. In the embodiment described, the sun visor (11) is supported by a mast (13) held by a rigid base (14) fixed to the chassis. The ends of the buoyancy tank (1) are also fixed to this rigid base (14). This base has a cutout for the directional nozzle (15).
La figure 3 représente une vue en détail de la réserve de flottabilité. Elle est constituée par une élément gonflable de forme général annulaire, dont la partie arrière présente une découpe (16) de forme complémentaire à l'embase rigide (14) qui vient s'adapter dans cette découpe. Les deux faces frontales (17, 18) viennent se fixer sur l'embase (14) par des boulons ou tout moyen équivalent .Figure 3 shows a detailed view of the buoyancy reserve. It consists of an inflatable element of generally annular shape, the rear part has a cutout (16) of complementary shape to the rigid base (14) which fits into this cutout. The two front faces (17, 18) are fixed on the base (14) by bolts or any equivalent means.
Des sangles de portage (2) sont fixés sur la bordure de la réserve de flottabilité. Des valves (20) permettent le gonflage des différents compartiments.Carrying straps (2) are attached to the edge of the buoyancy reserve. Valves (20) allow the various compartments to be inflated.
La figure 4 représente une vue éclatée du groupe propulseur. Il comporte, outre un moteur thermique non représenté, un tuyère (21) et un élément d'admission d'eau (22) .Figure 4 shows an exploded view of the powertrain. It comprises, in addition to a heat engine not shown, a nozzle (21) and a water intake element (22).
L'élément d'admission (22) est formé par une pièce cylindrique montée sur le fond du châssis par des Silentbloc ou des moyens amortisseurs et propres à réduire le bruit et la transmission des vibrations. Dans l'exemple représenté, l'élément d'admission est composé d'une partie tubulaire intérieure (24) et d'une embase (25) présente un disque (26) de fixation sur le fond du châssis prolongé par une partie tubulaire (27) . La liaison entre la partie tubulaire intérieure (24) sur laquelle est solidarisée la tuyère (21), et la partie extérieure (25) s'effectue par un joint élastique (28) assurant les fonctions de fixation, de limitation de la transmission des vibrations et d' étanchéité .The intake element (22) is formed by a cylindrical piece mounted on the bottom of the chassis by Silentblocks or damping means and capable of reducing noise and the transmission of vibrations. In the example shown, the intake element is composed of an inner tubular part (24) and a base (25) has a disc (26) for fixing on the bottom of the chassis extended by a tubular part ( 27). The connection between the inner tubular part (24) on which the nozzle (21) is secured, and the outer part (25) is effected by an elastic seal (28) ensuring the fixing functions, limiting the transmission of vibrations and sealing.
L'élément d'admission (22) s'ouvre sur le fond du châssis, selon une direction sensiblement perpendiculaire au fond, par l'intermédiaire d'une grille de protection (23) . L'autre extrémité de l'élément d'admission (22) présente un collier (29) pour la fixation sur la tuyère (21) .The intake element (22) opens on the bottom of the chassis, in a direction substantially perpendicular to the bottom, by means of a protective grid (23). The other end of the intake element (22) has a collar (29) for fixing to the nozzle (21).
A l'intérieur de l'élément d'admission (22) est placée une hélice (30) dont la forme évoque celle d'un hachoir à viande. Elle présente trois pâles hélicoïdales (31 à 33) soudées sur un moyeu (34) de forme cylindrique et de préférence conique divergent vers l'amont. Un axe de liaison (35) assure la liaison avec le moteur thermique. Cet axe de liaison traverse un guide (37) fixé sur la tuyère, et est maintenu par des roulements (36) . La tuyère présente une entrée frontale, orientée vers le bas, et une sortie radiale, orientée vers l'arrière, perpendiculairement à la direction d'admission. Elle présente une section intérieure décroissante, et une paroi hélicoïdale entraînant une accélération du jet d'eau. Une prise latérale (40) disposée dans la zone de plus forte section, orientée selon une direction approximativement radiale, assure la circulation de l'eau de refroidissement du moteur thermique. Une autre prise (41) disposée sur la tubulure d'éjection (42) assure la fonction d'aspiration des eaux stagnant éventuellement au fond du châssis.Inside the intake element (22) is placed a propeller (30) whose shape evokes that of a meat grinder. It has three helical blades (31 to 33) welded to a hub (34) of cylindrical shape and preferably conical, diverging upstream. A connecting pin (35) provides the connection with the heat engine. This connecting axis passes through a guide (37) fixed on the nozzle, and is held by bearings (36). The nozzle has a front inlet, oriented downward, and a radial outlet, oriented rearward, perpendicular to the direction of intake. It has a decreasing interior section, and a helical wall causing an acceleration of the water jet. A lateral intake (40) arranged in the zone of larger section, oriented in an approximately radial direction, ensures the circulation of the cooling water of the thermal engine. Another outlet (41) disposed on the ejection pipe (42) performs the suction function of the stagnant water possibly at the bottom of the chassis.
Une tuyère directionnelle (43) articulée sur l'extrémité de la tubulure d'éjection (42) assure l'orientation du jet dans le plan horizontal. Cette tuyère directionnelle (43) est commandée par le manche (12) . La liaison est assurée par un câble unique.A directional nozzle (43) articulated on the end of the ejection tube (42) ensures the orientation of the jet in the horizontal plane. This directional nozzle (43) is controlled by the handle (12). The connection is ensured by a single cable.
La figure 5 représente une vue en détail de la manette de commande. La manette est constituée par une tigeFigure 5 shows a detailed view of the control handle. The handle consists of a rod
(50) munie à son extrémité d'une boule de commande (51) . La tige (50) est articulée autour de deux axes perpendiculaires.(50) provided at its end with a trackball (51). The rod (50) is articulated around two perpendicular axes.
Le premier axe est défini par une coupelle hémisphérique (52) mobile par rapport à une embase hémisphérique (53) Cette embase présente une goulotte annulaire (55) pour le recueil des gouttes d'eau et des poussières. Cette goulotte s'ouvre sur la surface extérieure de la coque par une fente d'évacuation. L'embase est prolongée par une plaque de fixation (56) pour le montage sur la coque présentant à cet effet un trou circulaire. Le deuxième axe est constitué par un pivotThe first axis is defined by a hemispherical cup (52) movable relative to a hemispherical base (53) This base has an annular chute (55) for collecting water drops and dust. This chute opens onto the outer surface of the hull through an evacuation slot. The base is extended by a fixing plate (56) for mounting on the shell having for this purpose a circular hole. The second axis is constituted by a pivot
(58) . L'extrémité (60) d'un câble est fixé sur la partie inférieure (61) de la tige. Le câble présente une gaine arrêtée par une butée (59) . Ce câble est reliée au bras de commande de l'accélérateur du moteur thermique.(58). The end (60) of a cable is fixed to the lower part (61) of the rod. The cable has a sheath stopped by a stop (59). This cable is connected to the control arm of the engine accelerator.
Dans la direction perpendiculaire, la tige présente un deuxième point d'ancrage (62) d'un moyen de commande de la tuyère directionnelle.In the perpendicular direction, the rod has a second anchor point (62) of a means for controlling the directional nozzle.
La figure 6 représente une vue en coupe d'une variante de réalisation de la coque.Figure 6 shows a sectional view of an alternative embodiment of the shell.
La coque est selon cette variante réalisée sous forme d'une structure rigide, par exemple par moulage d'un matériau tel que du P.V.C.According to this variant, the shell is produced in the form of a rigid structure, for example by molding a material such as P.V.C.
La coque est réalisée en deux parties : une partie inférieure, comportant toute la partie flottante, et une partie supérieure formant un couvercle comprenant les parties visibles. La ligne de jonction est prévue au-dessus de la ligne de flottaison. La section de la coque est approximativement circulaire. Les deux parties sont raccordées le long d'une ligne de ceinture par collage. La partie supérieure forme un couvercle comportant des logements pour les organes tels le moteur ou les batteries .The shell is made in two parts: a lower part, comprising the entire floating part, and an upper part forming a cover comprising the visible parts. The junction line is provided above the waterline. The hull section is approximately circular. The two parts are connected along a belt line by gluing. The upper part forms a cover comprising housings for organs such as the engine or the batteries.
Cette coque présente un caisson extérieur annulaire (100) sur lequel est collée une couronne (101) alvéolée formant un amortisseur de chocs . Cette couronne présente une section en forme d'arc de cercle, et présente des canaux longitudinaux lui conférant une élasticité. Cette couronne (101) est réalisée par extrusion d'un matériau tel que du P.V.C.This shell has an annular outer casing (100) on which is glued a honeycomb crown (101) forming a shock absorber. This crown has a section in the shape of an arc of a circle, and has longitudinal channels giving it elasticity. This crown (101) is produced by extruding a material such as P.V.C.
L'invention est décrite dans ce qui précède à titre d'exemple non limitatif. Il est entendu que l'Homme du métier sera à même de réaliser différentes variantes sans pour autant sortir du cadre de l'invention. The invention is described in the foregoing by way of nonlimiting example. It is understood that a person skilled in the art will be able to produce different variants without departing from the scope of the invention.

Claims

REVENDICATIONS
1 - Engin de loisir nautique constitué par une coque rigide munie d'un propulseur, caractérisé en ce que le propulseur est un propulseur jde type hydroj.et, constitué par un moteur de faible puissance associé à une hélice d'aspiration d'eau placée dans une boîte d'aspiration débouchant dans le fond de la coque, la sortie de la boîte d'aspiration débouchant dans une tuyère. 2 Engin de loisir nautique selon la revendication 1, caractérisé en ce que la coque présente une jante périphérique pour recevoir une enveloppe gonflable de forme annulaire.1 - Nautical leisure craft constituted by a rigid hull provided with a propellant, characterized in that the propellant is a jde type hydroj.et propellant, constituted by a low power engine associated with a water suction propeller placed in a suction box opening into the bottom of the shell, the outlet of the suction box opening into a nozzle. 2 nautical leisure craft according to claim 1, characterized in that the hull has a peripheral rim to receive an inflatable envelope of annular shape.
3 - Engin de loisir nautique selon la revendication 1 ou 2 caractérisé en ce que la enveloppe gonflable présente une forme annulaire présentant à sa partie arrière une découpe pour le passage d'un segment rigide comprenant la tuyère directionnelle.3 - nautical leisure craft according to claim 1 or 2 characterized in that the inflatable envelope has an annular shape having at its rear part a cutout for the passage of a rigid segment comprising the directional nozzle.
4 - Engin de loisir nautique selon la revendication 1 caractérisé en ce que le segment rigide est prolongé par un mât supportant un pare-soleil.4 - nautical leisure craft according to claim 1 characterized in that the rigid segment is extended by a mast supporting a sun visor.
5 - Engin de loisir nautique selon l'une quelconque des revendications précédentes caractérisé en ce que le propulseur est constitué par un moteur de faible puissance associé à une hélice d'aspiration d'eau placée dans une boîte d'aspiration débouchant dans le fond de la coque, la sortie de la boîte d'aspiration débouchant dans une tuyère présentant une section décroissante et une paroi hélicoïdale . 6 - Engin de loisir nautique selon la revendication 5 caractérisé en ce que l'hélice présente trois pâles en forme de rampes hélicoïdales prolongeant un moyeu sensiblement cylindrique.5 - nautical leisure craft according to any one of the preceding claims, characterized in that the propellant is constituted by a low power engine associated with a water suction propeller placed in a suction box opening into the bottom of the shell, the outlet of the suction box opening into a nozzle having a decreasing section and a helical wall. 6 - nautical leisure craft according to claim 5 characterized in that the propeller has three blades in the form of helical ramps extending a substantially cylindrical hub.
7 - Engin de loisir nautique selon la revendication 6 caractérisé en ce que la tuyère présente dans la zone de forte section une prise d'eau pour le refroidissement du moteur.7 - Recreational water craft according to claim 6 characterized in that the nozzle has in the area of large section a water intake for cooling the engine.
8 - Engin de loisir nautique selon l'une quelconque des revendications précédentes caractérisé en ce que l'élément d'admission (22) est composé d'une partie tubulaire intérieure (24) et d'une embase (25) présente un disque (26) de fixation sur le fond du châssis prolongée par une partie tubulaire (27), la liaison entre la partie tubulaire intérieure (24) sur laquelle est solidarisée la tuyère (21), et la partie extérieure (25) s'effectuant par un joint élastique (28) assurant les fonction de fixation, de limitation de la transmission des vibrations et d' étanchéité .8 - Recreational water craft according to any one of the preceding claims, characterized in that the intake element (22) is composed of an inner tubular part (24) and of a base (25) has a disc ( 26) of attachment to the bottom of the chassis extended by a tubular part (27), the connection between the inner tubular part (24) on which the nozzle (21) is secured, and the outer part (25) being effected by a elastic seal (28) ensuring the fixing, limiting the transmission of vibrations and sealing functions.
9 - Engin de loisir nautique selon l'une quelconque des revendications précédentes caractérisé en ce que la manette de commande (12) est articulée sur une coupelle hémisphérique (52) mobile par rapport à une embase hémisphérique (53) .9 - Recreational water craft according to any one of the preceding claims, characterized in that the control lever (12) is articulated on a hemispherical cup (52) movable relative to a hemispherical base (53).
10 - Engin de loisir nautique selon la revendication 9 caractérisé en ce que cette embase (53) présente une goulotte annulaire (55) pour le recueil des gouttes d'eau et des poussières.10 - nautical leisure craft according to claim 9 characterized in that this base (53) has an annular chute (55) for the collection of water drops and dust.
11 - Engin de loisir nautique selon l'une au moins des revendications précédentes caractérisé en ce que la coque est composée de deux parties de section sensiblement circulaire.11 - A nautical leisure craft according to at least one of the preceding claims, characterized in that the hull is composed of two parts of substantially circular section.
12 - Engin de loisir nautique selon l'une au moins des revendications précédentes caractérisé en ce que la largeur hors tout est supérieure à 0,8 fois la longueur hors tout. 12 - nautical leisure craft according to at least one of the preceding claims, characterized in that the overall width is greater than 0.8 times the overall length.
EP98922902A 1997-04-30 1998-04-29 Water sport machine Expired - Lifetime EP0979194B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9705421 1997-04-30
FR9705421A FR2762823B1 (en) 1997-04-30 1997-04-30 MOTORIZED NAUTICAL LEISURE MACHINE
PCT/FR1998/000869 WO1998049047A2 (en) 1997-04-30 1998-04-29 Water sport machine

Publications (2)

Publication Number Publication Date
EP0979194A2 true EP0979194A2 (en) 2000-02-16
EP0979194B1 EP0979194B1 (en) 2002-02-06

Family

ID=9506516

Family Applications (1)

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EP98922902A Expired - Lifetime EP0979194B1 (en) 1997-04-30 1998-04-29 Water sport machine

Country Status (7)

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US (1) US6375522B1 (en)
EP (1) EP0979194B1 (en)
AT (1) ATE212926T1 (en)
DE (1) DE69803759D1 (en)
ES (1) ES2172892T3 (en)
FR (1) FR2762823B1 (en)
WO (1) WO1998049047A2 (en)

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Also Published As

Publication number Publication date
DE69803759D1 (en) 2002-03-21
FR2762823B1 (en) 1999-07-30
WO1998049047A2 (en) 1998-11-05
US6375522B1 (en) 2002-04-23
ATE212926T1 (en) 2002-02-15
FR2762823A1 (en) 1998-11-06
EP0979194B1 (en) 2002-02-06
ES2172892T3 (en) 2002-10-01
WO1998049047A3 (en) 1999-02-11

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