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EP3283366B1 - Propulsion system for a boat - Google Patents

Propulsion system for a boat Download PDF

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Publication number
EP3283366B1
EP3283366B1 EP16717350.9A EP16717350A EP3283366B1 EP 3283366 B1 EP3283366 B1 EP 3283366B1 EP 16717350 A EP16717350 A EP 16717350A EP 3283366 B1 EP3283366 B1 EP 3283366B1
Authority
EP
European Patent Office
Prior art keywords
propeller
propulsion system
belt
assembly
boat
Prior art date
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Application number
EP16717350.9A
Other languages
German (de)
French (fr)
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EP3283366A1 (en
Inventor
Charles Baumberger
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Individual
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Individual
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Publication date
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Publication of EP3283366A1 publication Critical patent/EP3283366A1/en
Application granted granted Critical
Publication of EP3283366B1 publication Critical patent/EP3283366B1/en
Priority to HRP20191377 priority Critical patent/HRP20191377T1/en
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/14—Transmission between propulsion power unit and propulsion element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/125—Arrangements on vessels of propulsion elements directly acting on water of propellers movably mounted with respect to hull, e.g. adjustable in direction, e.g. podded azimuthing thrusters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/32—Housings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/14—Transmission between propulsion power unit and propulsion element
    • B63H2020/145—Transmission between propulsion power unit and propulsion element comprising means for permitting telescoping movement of components of the outboard propulsion unit, e.g. telescoping movement of power leg
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
    • B63H2023/0208—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing by means of endless flexible members
    • B63H2023/0216—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing by means of endless flexible members by means of belts, or the like
    • B63H2023/0233—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing by means of endless flexible members by means of belts, or the like of belts having a toothed contact surface, or regularly spaced bosses, or hollows for slip-less or nearly slip-less meshing with complementary profiled contact surface of a pulley

Definitions

  • the present invention relates to a thruster for a boat, in particular a thruster equipped with a retractable and steerable propeller, and a boat equipped with such a thruster.
  • Many boat thrusters are equipped with a motor with a first axis, a propeller with a second axis, and a transmission element between these two axes.
  • the transmission between the engine and the shaft of the propeller is made by means of a belt.
  • the belt is faired, but this fairing generates a significant drag resulting in a loss of hydrodynamics mainly at high speed.
  • An object of the present invention is to provide a thruster free of limitations of known documents.
  • Another object of the present invention is to provide a more hydrodynamic propellant.
  • Another object of the present invention is to have a simple, original, quiet and inexpensive system.
  • Another object of the present invention is to provide a thruster with a retractable and steerable function, in a small footprint, and employable in all the different configurations commonly used on boats.
  • the connecting arm comprises two sections spaced apart from each other, a single strand passing through each section.
  • the belt may be a closed belt.
  • strand refers to each of the two portions of this belt between a pulley on the axis of the propeller and a pulley on the axis of the engine.
  • the thruster link arm may be unsealed.
  • the water can thus enter the link arm, be driven by the belt, and used for cooling the thruster.
  • the propeller (or each propeller) can be housed in a bulb and each propeller can be mounted on a rotating axis. Each propeller can also be removably mounted on the rotating shaft. This makes it possible to replace the propeller easily, without disassembling the bulb or the arm.
  • the first rotatable assembly is intended to be manually rotated.
  • the thruster comprises a first electric motor for pivoting the first rotary assembly.
  • the thruster may comprise two opposing belts fixed at their ends to the fairing portion and put into traction by the first electric motor to rotate the first rotary assembly to orient the propeller relative to the boat.
  • the second assembly adapted to be translated relative to the first rotary assembly in order to retract the propeller is intended to be manually translated.
  • the thruster comprises a second electric motor for translating the second set.
  • the present invention also relates to a boat comprising a thruster according to the present invention.
  • the propeller shown on the figure 1 comprises in particular a motor 100, a connecting arm 200, a propeller 302 and a belt 2.
  • the motor 100 may be an electric or hydraulic motor. It provides the energy needed to move the boat forward. This energy is transmitted to the propeller 302 by means of the belt 2.
  • the engine can also operate as a generator for charging a battery of the boat in the case of a sailboat advancing under sail.
  • belt designates smooth or notched belts, or equivalent elements for example chains.
  • the belt 2 can be notched or smooth. This belt 2 forms two strands between the engine 100 and the propeller 302.
  • the connecting arm 200 is unsealed and comprises two hollow profiles 202 with a fine outer section favoring its passage in the water, better visible on the figure 2a .
  • a single strand of the belt passes through each profile 202.
  • the belt thus receives energy from a pulley on the axis of the motor 100, passes through a first profile 202, transmits its energy to the pulley, then returns to the axis of the motor by the second section 202.
  • the two profiles 202 have a hydrodynamic profile of drifts. They are kept apart and can be parallel to each other or not. Two covers 203 allow to close the two hollow profiles 202 and fair them once the belt has been introduced. These profiles can be made of a composite material and are fixed at the top on the mobile carriages 501, and down in the bulb 300 of the propeller 302, as will be seen.
  • the assembly can be performed by first conical inserts 204 which allow a blocking quality without play and without risk of loosening regardless of the stability of the geometric dimensions of the material used.
  • the locking by screw of these conical inserts 204 placed in opposition or not is achieved by means of a first spacer 206 adjusted along the length according to the geometry of the mounted elements.
  • the belt is driven by a single pulley 4 and the two sections are connected to a single propeller 302.
  • the distance between the two sections 202 is given by the diameter of the pulley 4 which can be between 40 mm and 800 mm.
  • a large pulley diameter allows the belt to transmit a significant engine torque with a significant service life. They also make it possible to keep the two fins sufficiently spaced to give a great rigidity to the link arm.
  • the belt is driven by two pulleys 4, 4 '.
  • the thruster comprises two propellers 302, 302 ', each propeller being mounted in a bulb.
  • the two bulbs are interconnected by a foil 201 in the shape of an airplane wing.
  • the belt 2 passes through the first profile 202, drives the first helix in the first bulb, passes through the foil 201, drives the second helix in the second bulb, then returns to the engine by the second section 202.
  • the distance between the two profiles is given by the radius of the pulleys plus the gap between the pulleys.
  • the bulb 300 of the propeller 302 comprises a toothed pulley 306 driven by the belt 2 inside the bulb, a rotating shaft 311 and a fixed axis 312.
  • This toothed pulley 306 rotates about the fixed axis 312 by means of ball bearing 308 to take the radial forces and oblique bearings 309 to take the radial and axial forces.
  • Seals 310 protect the bearings.
  • the axis of the pulley can also be mounted with two deep groove ball bearings, roller bearings, needle bearings, thrust ball bearing or needle, tapered bearings or any other type of bearing. allowing to take the radial and axial efforts.
  • the toothed pulley 306 is thus rotated about the fixed axis 312 which is maintained in the nose of the bulb 322 and blocked at the front by a second conical insert 314 and a second spacer 316.
  • the propeller is mounted on the rotating shaft 311 whose rotation is driven by the pulley 306 thus allowing the rotation of the propeller.
  • the flank 304 geometrically connects the outer diameter of the nose of the bulb 322 with the outer diameter of the helix.
  • the shape of the bulb 300 promotes the passage in the water, which allows the boat to gain hydrodynamism.
  • the emptying of the oil in the bulb is done by opening a plug 324 threaded and internal to the bulb.
  • the belt 2 carries with it the water which is compressed at the passage of the pulley 306. This water is recovered for cooling the motor 100.
  • the thruster is connected to the boat by the fairing portion 208 fixed relative to the hull of the boat.
  • a first rotary assembly 400 can turn manually or motorized relative to the first fairing portion 208 around an upwardly facing geometric axis, so as to orient the propeller relative to the boat to rotate it.
  • the fairing portion 208 comprises an open, rigid and advantageously cylindrical envelope with a round, square or any other section.
  • the first rotary assembly 400 comprises a cage formed of an upper flange 402 on which is mounted the motor 100 with the bearing of the pulley 4 and a lower flange 404 connected to the upper flange 402 by rods. 406 rotary and advantageously threaded.
  • the flanges may be metal or polymeric material. The motor 100 therefore rotates with the first set 400.
  • the rods 406 are fixed to the flanges 402, 404 by means of semi-rigid inserts 408 visible on the figure 7 .
  • the inserts 408 are made with two flanged guns 410 mounted in opposition on each flange and locked on a bearing at the ends of the threaded rods 406.
  • each barrel is equipped with a self-lubricating bearing bush 412, locked in position. rotation by a fixed pin 414 attached to the respective flange.
  • the housing of the insert in the flange is sized to allow the mounting of a member 416 flexible polymer or O-rings.
  • the weight of the mechanical assembly is supported by the upper flange 402 and transmitted to the fairing portion 208 by the bearing 6 which allows the rotational assembly 400 to rotate.
  • An elastomeric spacer 8 absorbs the vibrations of the engine thus avoiding to transmit them to the hull of the boat and thus reduce the noise.
  • the upper flange 402 and the lower flange 404 interconnected by the rods 406 absorb the torque created by the thrust of the propeller 302 and the tension force of the toothed belt 2.
  • the first rotary assembly can be rotated relative to the fairing portion.
  • the profiles 202 being integral in rotation of the rods 406, this rotation is transmitted to the profiles and therefore to the bulbs 300 and the propellers 302.
  • the first rotatable assembly 400 may be manually rotated relative to the fairing portion.
  • an electric motor 102 visible in particular on the figure 4a , is provided for this purpose.
  • This motor drives a pulley 104 with vertical axis, which in turn drives via a belt 106 the axis of orientation 108 equipped with a driven pulley 110 and a rolling bearing ball 112.
  • Two flat belts 116 and 118 are attached at one end to the fairing portion 208 and at the other end to a bearing of the orientation axis 108, so that the first flat belt 116 is unwound and the second belt 118 is wound when the engine rotates in a first direction, and vice versa when the engine rotates in the other direction.
  • the traction exerted on the belt 116 or 118 causes rotation of the rotary assembly 400.
  • a support 120 mounted on a bearing makes it possible to ensure the rigidity of the winding axis.
  • the engine 102 can be controlled by a GPS navigator or by assisted driving.
  • first set 400 allowing the orientation of the propeller relative to the boat to rotate it.
  • This first rotational assembly 400 can also be blocked on the fairing portion so that the helix can not be oriented.
  • the thruster comprises a second assembly 500 adapted to be translated relative to the first assembly 400 and the first fairing portion 208 to retract the propeller 302.
  • This system therefore allows the propeller to move between a retracted position inside the boat and a working position deployed outside the boat. Details of this second set are particularly visible on the figure 4b .
  • the second set 500 can be retracted manually, in this case the rods 406 can be smooth and non-rotating.
  • the second assembly 500 can be retracted in a motorized manner by the second motor 130 with transmission.
  • This motor 130 is fixed on a support plate 150 and drives a pulley 132, which leads to turn the belt 134 resulting in four toothed pulleys 138.
  • the four pulleys 138 are each mounted on a drive shaft 136 equipped with a bearing with ball bearings 140. When the motor 130 engages, these four drive axes 136 rotate. by means of a drive ring 144 the four threaded rods 406 which rotate on themselves.
  • each section 202 is mounted on one of the carriages 501, so that these profiles and the bulb attached thereto follows the vertical movements of the carriages.
  • the elements are dimensioned so that the drive belt 2 of the propeller is perfectly stretched when the carriages are at the bottom, each strand winding on itself between the link arm and the fairing portion when the propeller is retracted.
  • the rods drive the carriages 501 without risk of blockage.
  • the idle pulleys 146 make it possible to tension the belt.
  • This second set 500 for retracting the helix.
  • This second set can also be blocked on the first set so as not to retract the propeller.
  • the thruster can be mounted in the ship inboard way as shown in FIG. figure 5a .
  • the thruster can be mounted outboard as shown in FIG. figure 5b .
  • the thruster can be integrated directly into the transom of the boat as illustrated on the figure 5c .
  • FIG. 8 to 15 Another embodiment of the present invention is shown in Figures 8 to 15 .
  • the thruster according to this second embodiment of the present invention does not differ fundamentally from the thruster according to the first example of the present invention, described on the Figures 1 to 7 .
  • this second embodiment of the present invention also includes some new elements with particular advantages.
  • the thruster according to this second embodiment of the present invention 1000 illustrated on the figures 8 and 9 also comprises an engine assembly 1500 within an envelope 1100, a fairing 1200 encompassing the assembly 1600 for performing the functions of retraction and orientation of the propeller, a connecting arm 1300 and a propeller bulb 1400.
  • This set of motorization 1500 (shown in more detail in Figures 14a and 14b where, in particular, the transmission mechanisms relating to the retraction and orientation functions) comprise, contrary to the solution according to the first example of the embodiment of the invention described above, generally several engines, namely a motor or several motors. (three motors in the example) drive the propeller, as well as two other motors used for the retraction function and the propeller orientation function respectively.
  • the engine used to move the boat forward transmits the torque on the large pulley of the transmission shaft with one or more belts.
  • the torque transmission of the motor of the orientation of the propeller is no longer achieved using two belts, but rather with the aid of a single belt which meshes with a toothed wheel which is held by the fixed casing 1100 of the motor assembly 1500.
  • the engagement of the motor causes traction on a strand and the rotation of the assemblies included in the casing 1100.
  • each of the engines in the 1500 engine assembly may be an electric or hydraulic motor.
  • a mechanism makes it possible to maintain the tension of the belt during the retraction of the connecting arm with the propeller, and throughout its movement. Indeed, for this purpose, the belt is rolled up thanks to a first pulley fixed on the arm (at the bottom in the Figures 10a and 10b ) and a second pulley fixed to the flange of the rotary assembly. It is visible that part of the belt is "spread" aside by a corresponding system, having a pivotable arm and another pulley.
  • the link arm 1300 with the bulb of the propeller 1400 is shown in FIG. figure 11 . It comprises two hollow profiles 1310 and 1320 housing the strands of the belt which are fixed at the top on the mobile carriages 1340 and 1350. Visible on the mobile carriages 1340 and 1350 are the nuts 1360 which collaborate with the threaded rods of the rotary assembly to achieve the retraction of the connecting arm 1300 and the propeller. Also visible is the pulley 1330 used in the process of retraction.
  • the figure 12 illustrates the fairing 1200 of the thruster 1000. It comprises a lower bearing 1210 and an upper bearing 1250 and a cylindrical wall 1270.
  • the lower bearing 1210 and the upper bearing 1250 of the fairing 1200 are fixed in opposition to the cylindrical envelope 1270 to the using three threaded rods 1220, 1230, two of which (the rods 1220) are used with the fastener 1260 to attach the fairing 1200 to the boat.
  • the rotary assembly 1600 used in this second embodiment of the present invention is shown in FIG. figure 13 .
  • This rotary assembly 1600 comprises a lower flange 1610 and an upper flange 1650 which are interconnected by the rods 1620.
  • the pivotable arm 1630 with the pulley 1640 allowing the spacing of the drive belt, as shown and mentioned in relation with the Figures 10a and 10b .
  • Visible to the figure 13 is also the transmission mechanism of the rotation to the rods 1620 through pulleys 1670 and 1680 belts.
  • the swiveling guide equipped with four threaded rods 1620 with synchronized rotating nuts with special inserts at these ends makes it possible to transmit big efforts. , also allowing a displacement without risk of jamming.
  • this variant of the invention provides a transmission shaft with a large pulley 1660 to create with the engine pulley a reduction gear ratio of about 1/3. Thanks to this modification, it is possible to obtain a slower propeller rotation with a torque transmitted on the larger propeller, which makes it possible to use a larger propeller and thus to improve the overall efficiency. in a very significant way.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transmission Devices (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Manipulator (AREA)
  • Braking Systems And Boosters (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention concerne un propulseur pour un bateau, en particulier un propulseur muni d'une hélice rétractable et orientable, ainsi qu'un bateau muni d'un tel propulseur.The present invention relates to a thruster for a boat, in particular a thruster equipped with a retractable and steerable propeller, and a boat equipped with such a thruster.

Etat de la techniqueState of the art

De nombreux propulseurs pour bateaux sont équipés d'un moteur avec un premier axe, d'une hélice avec un deuxième axe, et d'un élément de transmission entre ces deux axes.Many boat thrusters are equipped with a motor with a first axis, a propeller with a second axis, and a transmission element between these two axes.

A titre d'exemple dans les documents EP0529564 , WO10063979 , GB1240551 , US5435763 et WO9420362 , la transmission entre le moteur et l'arbre de l'hélice se fait au moyen d'une courroie. La courroie est carénée, mais ce carénage génère une trainée importante ayant pour conséquence une perte en hydrodynamisme principalement à grande vitesse.As an example in the documents EP0529564 , WO10063979 , GB1240551 , US5435763 and WO9420362 , the transmission between the engine and the shaft of the propeller is made by means of a belt. The belt is faired, but this fairing generates a significant drag resulting in a loss of hydrodynamics mainly at high speed.

Par ailleurs plusieurs solutions sont également divulguées dans l'art antérieur proposant des propulseurs munis d'une hélice rétractable et orientable. A titre d'exemple les documents WO13164175 , US5522744 , FR2741854 . Cependant les mécanismes divulgués dans ces documents sont complexes.Moreover, several solutions are also disclosed in the prior art proposing thrusters equipped with a retractable and steerable propeller. For example, documents WO13164175 , US5522744 , FR2741854 . However, the mechanisms disclosed in these documents are complex.

Bref résumé de l'inventionBrief summary of the invention

Un but de la présente invention est de proposer un propulseur exempt des limitations des documents connus.An object of the present invention is to provide a thruster free of limitations of known documents.

Un autre but de la présente invention est de proposer un propulseur plus hydrodynamique.Another object of the present invention is to provide a more hydrodynamic propellant.

Un autre but de la présente invention est d'avoir un système simple, original, silencieux et peu coûteux.Another object of the present invention is to have a simple, original, quiet and inexpensive system.

Finalement, un autre but de la présente invention est d'offrir un propulseur avec une fonction rétractable et orientable, dans un encombrement réduit, et employable dans toutes les différentes configurations utilisées habituellement sur les bateaux.Finally, another object of the present invention is to provide a thruster with a retractable and steerable function, in a small footprint, and employable in all the different configurations commonly used on boats.

Selon l'invention, ces buts sont atteints notamment au moyen d'un propulseur pour un bateau comprenant :

  • un moteur ;
  • un bras de liaison ;
    . une portion de carénage destinée à être montée sur le bateau ;
  • au moins une hélice ; et
  • une courroie pour transmettre le couple dudit moteur à ladite au moins une hélice, ladite courroie formant deux brins entre ledit moteur et ladite hélice ;
et comprenant en outre :
. un premier ensemble rotatif traversé par la courroie et apte à pivoter par rapport à la première portion de carénage autour d'un axe géométrique orienté vers le haut, de manière à orienter ladite au moins une hélice par rapport au bateau pour le faire tourner ; et
  • un deuxième ensemble apte à être translaté par rapport au premier ensemble rotatif afin de rétracter ladite au moins une hélice.
According to the invention, these objects are attained in particular by means of a thruster for a boat comprising:
  • a motor ;
  • a link arm;
    . a portion of fairing intended to be mounted on the boat;
  • at least one helix; and
  • a belt for transmitting the torque of said motor to said at least one propeller, said belt forming two strands between said motor and said propeller;
and further comprising:
. a first rotational assembly traversed by the belt and adapted to pivot relative to the first fairing portion about an upwardly facing geometric axis, so as to orient said at least one helix relative to the boat to rotate it; and
  • a second assembly adapted to be translated relative to the first rotary assembly in order to retract said at least one propeller.

Grâce à un tel propulseur, les limitations mentionnées des solutions existantes peuvent être surmontées et il est notamment possible d'obtenir un propulseur avec une transmission à courroie, possédant en outre une fonction de rétraction et orientation de l'hélice, et ceci dans un encombrement réduit. Ces avantages sont notamment obtenus grâce à l'utilisation d'un carénage fixe, à l'intérieur duquel sont positionnés deux mécanismes motorisés permettant d'escamoter le bras (et l'hélice) et d'entraîner ce dernier en rotation afin d'orienter l'hélice.Thanks to such a thruster, the mentioned limitations of the existing solutions can be overcome and it is possible in particular to obtain a propeller with a belt transmission, further having a function of retraction and orientation of the propeller, and this in a small footprint. These advantages are notably obtained thanks to the use of a fixed fairing, inside which are positioned two motorized mechanisms allowing to retract the arm (and the propeller) and to drive the latter in rotation in order to orient the propeller.

Dans une variante de l'invention, le bras de liaison comporte deux profilés distants l'un de l'autre, un seul brin passant dans chaque profilé. La courroie peut être une courroie fermée. Le terme « brin » désigne chacune des deux portions de cette courroie entre une poulie sur l'axe de l'hélice et une poulie sur l'axe du moteur. En protégeant chaque brin de la courroie par un profilé indépendant, on réduit la surface frontale du bras de liaison et on permet à l'eau de passer entre les deux brins carénés de la courroie. Cette caractéristique permet d'améliorer l'hydrodynamisme.In a variant of the invention, the connecting arm comprises two sections spaced apart from each other, a single strand passing through each section. The belt may be a closed belt. The term "strand" refers to each of the two portions of this belt between a pulley on the axis of the propeller and a pulley on the axis of the engine. By protecting each strand of the belt with an independent profile, the front surface of the connecting arm is reduced and the water is allowed to pass between the two faired strands of the belt. This feature improves hydrodynamics.

Le bras de liaison du propulseur peut être non étanche. L'eau peut ainsi entrer dans le bras de liaison, être entraînée par la courroie, et utilisée pour le refroidissement du propulseur.The thruster link arm may be unsealed. The water can thus enter the link arm, be driven by the belt, and used for cooling the thruster.

L'hélice (ou chaque hélice) peut être logée dans un bulbe et chaque hélice peut être montée sur un axe tournant. Chaque hélice peut également être montée de manière amovible sur l'axe tournant. Ceci permet de remplacer l'hélice aisément, sans démonter le bulbe ou le bras.The propeller (or each propeller) can be housed in a bulb and each propeller can be mounted on a rotating axis. Each propeller can also be removably mounted on the rotating shaft. This makes it possible to replace the propeller easily, without disassembling the bulb or the arm.

Dans un mode de réalisation, le premier ensemble rotatif est destiné à être pivoté manuellement.In one embodiment, the first rotatable assembly is intended to be manually rotated.

Selon une autre variante, le propulseur comporte un premier moteur électrique pour pivoter le premier ensemble rotatif.According to another variant, the thruster comprises a first electric motor for pivoting the first rotary assembly.

Le propulseur peut comporter deux courroies en opposition fixées à leurs extrémités à la portion de carénage et mise en traction par le premier moteur électrique pour tourner le premier ensemble rotatif afin d'orienter l'hélice par rapport au bateau.The thruster may comprise two opposing belts fixed at their ends to the fairing portion and put into traction by the first electric motor to rotate the first rotary assembly to orient the propeller relative to the boat.

Dans une variante, le deuxième ensemble apte à être translaté par rapport au premier ensemble rotatif afin de rétracter l'hélice est destiné à être translaté manuellement.In a variant, the second assembly adapted to be translated relative to the first rotary assembly in order to retract the propeller is intended to be manually translated.

Dans une autre variante, le propulseur comporte un deuxième moteur électrique pour faire translater le deuxième ensemble.In another variant, the thruster comprises a second electric motor for translating the second set.

En outre, la présente invention se rapporte également à un bateau comprenant un propulseur selon la présente invention.In addition, the present invention also relates to a boat comprising a thruster according to the present invention.

Brève description des figuresBrief description of the figures

Des exemples de mise en oeuvre de l'invention sont indiqués dans la description illustrée par les figures annexées dans lesquelles :

  • La figure 1 est une vue d'un propulseur selon un premier exemple de la présente invention en coupe partielle selon un plan vertical.
  • La figure 2a est une représentation partielle en perspective du propulseur de la figure 1 sans portion de carénage.
  • La figure 2b est une représentation partielle en perspective d'un deuxième mode de réalisation du propulseur de la figure 1.
  • La figure 3 est une vue en perspective du premier ensemble rotatif.
  • La figure 4a est une vue en perspective de la partie supérieure du propulseur de la figure 1, illustrant notamment le système d'orientation de l'hélice.
  • La figure 4b est une vue en perspective de la partie supérieure du propulseur de la figure 1, illustrant notamment le système de rétraction de l'hélice.
  • Les figures 5a à 5c illustrent un bateau équipé du propulseur selon trois modes de réalisation différents.
  • La figure 6 est une vue en coupe longitudinale du bulbe de l'hélice.
  • La figure 7 est une vue en coupe des inserts permettant de monter les tiges sur les flasques de l'ensemble rotatif.
  • La figure 8 est une vue en perspective d'un propulseur selon un deuxième exemple de la présente invention, notamment un propulseur Out-bord.
  • La figure 9 est une vue en perspective d'un propulseur de la figure 8, sans le carénage et sans l'enveloppe englobant l'ensemble de motorisation.
  • La figure 10 est une vue de côté d'un propulseur de la figure 8 : la figure 10a représente la position avec l'hélice dans la position d'opération et la figure 10b représente la position avec l'hélice rétractée.
  • La figure 11 est une vue en perspective du bras de liaison d'un propulseur de la figure 8.
  • La figure 12 est une vue en perspective du carénage d'un propulseur de la figure 8.
  • La figure 13 est une vue en perspective de l'ensemble rotatif d'un propulseur de la figure 8.
  • La figure 14a et la figure 14b sont des vues en perspective de deux côtés différents de l'ensemble de motorisation d'un propulseur de la figure 8.
Examples of implementation of the invention are indicated in the description illustrated by the appended figures in which:
  • The figure 1 is a view of a thruster according to a first example of the present invention in partial section along a vertical plane.
  • The figure 2a is a partial perspective representation of the thruster of the figure 1 without fairing portion.
  • The figure 2b is a partial perspective representation of a second embodiment of the propellant of the figure 1 .
  • The figure 3 is a perspective view of the first rotary assembly.
  • The figure 4a is a perspective view of the upper part of the thruster of the figure 1 , illustrating in particular the system of orientation of the propeller.
  • The figure 4b is a perspective view of the upper part of the thruster of the figure 1 , illustrating in particular the system of retraction of the propeller.
  • The Figures 5a to 5c illustrate a boat equipped with the thruster according to three different embodiments.
  • The figure 6 is a longitudinal sectional view of the bulb of the propeller.
  • The figure 7 is a sectional view of the inserts for mounting the rods on the flanges of the rotating assembly.
  • The figure 8 is a perspective view of a thruster according to a second example of the present invention, including an Out-board thruster.
  • The figure 9 is a perspective view of a propeller from the figure 8 , without the fairing and without the envelope encompassing the motor assembly.
  • The figure 10 is a side view of a propeller from the figure 8 : the figure 10a represents the position with the propeller in the operating position and the figure 10b represents the position with the retracted propeller.
  • The figure 11 is a perspective view of the linkage arm of a propeller from the figure 8 .
  • The figure 12 is a perspective view of the fairing of a propeller from the figure 8 .
  • The figure 13 is a perspective view of the rotating assembly of a propeller from the figure 8 .
  • The figure 14a and the figure 14b are perspective views of two different sides of the engine assembly of a propeller of the figure 8 .

Exemples de modes de réalisation de l'inventionExamples of embodiments of the invention

Le propulseur illustré sur la figure 1 comporte notamment un moteur 100, un bras de liaison 200, une hélice 302 et une courroie 2. Le moteur 100 peut être un moteur électrique ou hydraulique. Il fournit l'énergie nécessaire à faire avancer le bateau. Cette énergie est transmise à l'hélice 302 au moyen de la courroie 2. Le moteur peut également fonctionner en génératrice pour charger une batterie du bateau dans le cas d'un voilier avançant sous voile.The propeller shown on the figure 1 comprises in particular a motor 100, a connecting arm 200, a propeller 302 and a belt 2. The motor 100 may be an electric or hydraulic motor. It provides the energy needed to move the boat forward. This energy is transmitted to the propeller 302 by means of the belt 2. The engine can also operate as a generator for charging a battery of the boat in the case of a sailboat advancing under sail.

Dans le présent document l'expression courroie désigne des courroies lisses ou crantées, ou des éléments équivalents par exemple des chaînes.As used herein the term belt designates smooth or notched belts, or equivalent elements for example chains.

La courroie 2 peut être crantée ou lisse. Cette courroie 2 forme deux brins entre le moteur 100 et l'hélice 302.The belt 2 can be notched or smooth. This belt 2 forms two strands between the engine 100 and the propeller 302.

Le bras de liaison 200 est non étanche et comporte deux profilés creux 202 avec une section extérieure fine favorisant son passage dans l'eau, mieux visibles sur la figure 2a. Un seul brin de la courroie passe dans chaque profilé 202. La courroie reçoit donc l'énergie par une poulie sur l'axe du moteur 100, traverse un premier profilé 202, transmet son énergie à la poulie, puis retourne vers l'axe du moteur par le deuxième profilé 202.The connecting arm 200 is unsealed and comprises two hollow profiles 202 with a fine outer section favoring its passage in the water, better visible on the figure 2a . A single strand of the belt passes through each profile 202. The belt thus receives energy from a pulley on the axis of the motor 100, passes through a first profile 202, transmits its energy to the pulley, then returns to the axis of the motor by the second section 202.

Les deux profilés 202 ont un profil hydrodynamique de dérives. Ils sont maintenus écartés et peuvent être parallèles entre eux ou non. Deux couvercles 203 permettent de fermer les deux profilés creux 202 et de les caréner une fois que la courroie a été introduite. Ces profilés peuvent être réalisés dans un matériau composite et sont fixés en haut sur les chariots mobiles 501, et en bas au bulbe 300 de l'hélice 302, comme on le verra. Le montage peut être effectué par des premiers inserts coniques 204 qui permettent une qualité de blocage sans jeux et sans risque de desserrage indépendamment de la stabilité des dimensions géométriques du matériau utilisé. Le blocage par vis de ces inserts coniques 204 placés en opposition ou non est réalisé par l'intermédiaire d'une première entretoise 206 ajustée sur la longueur selon la géométrie des éléments montés.The two profiles 202 have a hydrodynamic profile of drifts. They are kept apart and can be parallel to each other or not. Two covers 203 allow to close the two hollow profiles 202 and fair them once the belt has been introduced. These profiles can be made of a composite material and are fixed at the top on the mobile carriages 501, and down in the bulb 300 of the propeller 302, as will be seen. The assembly can be performed by first conical inserts 204 which allow a blocking quality without play and without risk of loosening regardless of the stability of the geometric dimensions of the material used. The locking by screw of these conical inserts 204 placed in opposition or not is achieved by means of a first spacer 206 adjusted along the length according to the geometry of the mounted elements.

Dans la variante illustrée à la figure 2a, la courroie est entrainée par une seule poulie 4 et les deux profilés sont reliés à une seule hélice 302. Dans ce cas la distance entre les deux profilés 202 est donnée par le diamètre de la poulie 4 qui peut être compris entre 40 mm et 800 mm.In the variant illustrated in figure 2a , the belt is driven by a single pulley 4 and the two sections are connected to a single propeller 302. In this case the distance between the two sections 202 is given by the diameter of the pulley 4 which can be between 40 mm and 800 mm.

Un grand diamètre de poulie permet à la courroie de transmettre un couple moteur important avec une durée de vie significative. Elles permettent en outre de maintenir les deux dérives suffisamment écartées pour donner une grande rigidité au bras de liaison.A large pulley diameter allows the belt to transmit a significant engine torque with a significant service life. They also make it possible to keep the two fins sufficiently spaced to give a great rigidity to the link arm.

Dans une autre variante illustrée à la figure 2b, la courroie est entrainée par deux poulies 4, 4'. Le propulseur comporte deux hélices 302, 302', chaque hélice étant montée dans un bulbe. Les deux bulbes sont reliés entre eux par un foil 201 en forme d'aile d'avion. La courroie 2 traverse le premier profilé 202, entraîne la première hélice dans le premier bulbe, traverse le foil 201, entraîne la deuxième hélice dans le deuxième bulbe, puis retourne vers le moteur par le second profilé 202. Dans cette variante la distance entre les deux profilés est donnée par le rayon des poulies plus l'écart entre les poulies.In another variant illustrated in figure 2b the belt is driven by two pulleys 4, 4 '. The thruster comprises two propellers 302, 302 ', each propeller being mounted in a bulb. The two bulbs are interconnected by a foil 201 in the shape of an airplane wing. The belt 2 passes through the first profile 202, drives the first helix in the first bulb, passes through the foil 201, drives the second helix in the second bulb, then returns to the engine by the second section 202. In this variant the distance between the two profiles is given by the radius of the pulleys plus the gap between the pulleys.

Le bulbe 300 de l'hélice 302 comprend une poulie crantée 306 entrainée par la courroie 2 à l'intérieur du bulbe, un axe tournant 311 et un axe fixe 312. Cette poulie crantée 306 tourne autour de l'axe fixe 312 au moyen de roulement à billes 308 pour reprendre les efforts radiaux et de roulements obliques 309 pour reprendre les efforts radiaux et axiaux. Des joints d'étanchéité 310 protègent les roulements.The bulb 300 of the propeller 302 comprises a toothed pulley 306 driven by the belt 2 inside the bulb, a rotating shaft 311 and a fixed axis 312. This toothed pulley 306 rotates about the fixed axis 312 by means of ball bearing 308 to take the radial forces and oblique bearings 309 to take the radial and axial forces. Seals 310 protect the bearings.

Dans une variante, l'axe de la poulie peut également être monté avec deux roulements à billes à gorge profonde, des roulements à rouleaux, des roulements à aiguilles, une butée à billes ou à aiguilles, des roulements coniques ou tout autre type de roulement permettant de reprendre les efforts radiaux et axiaux.Alternatively, the axis of the pulley can also be mounted with two deep groove ball bearings, roller bearings, needle bearings, thrust ball bearing or needle, tapered bearings or any other type of bearing. allowing to take the radial and axial efforts.

La poulie crantée 306 est donc en rotation autour de l'axe fixe 312 qui est maintenu dans le nez du bulbe 322 et bloqué à l'avant par un deuxième insert conique 314 et une deuxième entretoise 316.The toothed pulley 306 is thus rotated about the fixed axis 312 which is maintained in the nose of the bulb 322 and blocked at the front by a second conical insert 314 and a second spacer 316.

L'hélice est montée sur l'axe tournant 311 dont la rotation est entrainée par la poulie 306 permettant ainsi la rotation de l'hélice.The propeller is mounted on the rotating shaft 311 whose rotation is driven by the pulley 306 thus allowing the rotation of the propeller.

Le flanc 304 relie géométriquement le diamètre extérieur du nez du bulbe 322 avec le diamètre extérieur de l'hélice. La forme du bulbe 300 favorise le passage dans l'eau, ce qui permet au bateau de gagner en hydrodynamisme. La vidange de l'huile dans le bulbe se fait en débouchant un bouchon 324 fileté et interne au bulbe.The flank 304 geometrically connects the outer diameter of the nose of the bulb 322 with the outer diameter of the helix. The shape of the bulb 300 promotes the passage in the water, which allows the boat to gain hydrodynamism. The emptying of the oil in the bulb is done by opening a plug 324 threaded and internal to the bulb.

La courroie 2 entraîne avec elle l'eau qui est comprimée au passage de la poulie 306. Cette eau est récupérée pour le refroidissement du moteur 100.The belt 2 carries with it the water which is compressed at the passage of the pulley 306. This water is recovered for cooling the motor 100.

Nous allons maintenant décrire la partie supérieure du propulseur, et notamment le système permettant de pivoter l'hélice pour orienter le bateau.We will now describe the upper part of the thruster, including the system for pivoting the propeller to steer the boat.

Le propulseur est lié au bateau par la portion de carénage 208 fixe par rapport à la coque du bateau. Un premier ensemble rotatif 400, visible en particulier sur la figure 3, peut tourner manuellement ou de manière motorisée par rapport à la première portion de carénage 208 autour d'un axe géométrique orienté vers le haut, de manière à orienter l'hélice par rapport au bateau pour le faire tourner.The thruster is connected to the boat by the fairing portion 208 fixed relative to the hull of the boat. A first rotary assembly 400, visible in particular on the figure 3 , can turn manually or motorized relative to the first fairing portion 208 around an upwardly facing geometric axis, so as to orient the propeller relative to the boat to rotate it.

La portion de carénage 208 comprend une enveloppe ouverte, rigide et avantageusement cylindrique avec une section ronde, carrée, ou quelconque.The fairing portion 208 comprises an open, rigid and advantageously cylindrical envelope with a round, square or any other section.

Dans l'exemple illustré, le premier ensemble rotatif 400 comporte une cage formée d'un flasque supérieur 402 sur lequel est monté le moteur 100 avec le palier de la poulie 4 et d'un flasque inférieur 404 liés au flasque supérieur 402 par des tiges 406 rotatives et avantageusement filetées. Les flasques peuvent être métalliques ou en matériau polymère. Le moteur 100 tourne donc avec le premier ensemble 400.In the illustrated example, the first rotary assembly 400 comprises a cage formed of an upper flange 402 on which is mounted the motor 100 with the bearing of the pulley 4 and a lower flange 404 connected to the upper flange 402 by rods. 406 rotary and advantageously threaded. The flanges may be metal or polymeric material. The motor 100 therefore rotates with the first set 400.

Les tiges 406 sont fixées aux flasques 402, 404 au moyen d'inserts semi-rigides 408 visibles sur la figure 7. Les inserts 408 sont réalisés avec deux canons à collerettes 410 montés en opposition sur chaque flasque et bloqués sur une portée aux extrémités des tiges filetées 406. Pour permettre la rotation des tiges filetées, chaque canon est équipé d'un coussinet autolubrifiant 412, bloqué en rotation par une goupille fixe 414 fixée au flasque respectif. Le logement de l'insert dans le flasque est dimensionné pour permettre le montage d'un élément 416 en polymère souple ou de joints toriques.The rods 406 are fixed to the flanges 402, 404 by means of semi-rigid inserts 408 visible on the figure 7 . The inserts 408 are made with two flanged guns 410 mounted in opposition on each flange and locked on a bearing at the ends of the threaded rods 406. To enable the rotation of the threaded rods, each barrel is equipped with a self-lubricating bearing bush 412, locked in position. rotation by a fixed pin 414 attached to the respective flange. The housing of the insert in the flange is sized to allow the mounting of a member 416 flexible polymer or O-rings.

Ces inserts 408 permettent aux tiges de pivoter sur elles-mêmes par rapport aux flasques, et de compenser les défauts de parallélisme éventuels des tiges 406.These inserts 408 allow the rods to pivot on themselves relative to the flanges, and compensate for any parallelism defects of the rods 406.

En retournant sur la figure 1, le poids de l'ensemble mécanique est supporté par le flasque supérieur 402 et transmis à la portion de carénage 208 par le palier 6 qui permet à l'ensemble rotatif 400 de tourner. Une entretoise en élastomère 8 absorbe les vibrations du moteur permettant ainsi d'éviter de les transmettre à la coque du bateau et de réduire ainsi le bruit. Le flasque supérieur 402 et le flasque inférieur 404 reliés entre eux par les tiges 406 absorbent le couple crée par la poussée de l'hélice 302 et l'effort de tension de la courroie crantée 2.Returning to the figure 1 , the weight of the mechanical assembly is supported by the upper flange 402 and transmitted to the fairing portion 208 by the bearing 6 which allows the rotational assembly 400 to rotate. An elastomeric spacer 8 absorbs the vibrations of the engine thus avoiding to transmit them to the hull of the boat and thus reduce the noise. The upper flange 402 and the lower flange 404 interconnected by the rods 406 absorb the torque created by the thrust of the propeller 302 and the tension force of the toothed belt 2.

Le premier ensemble rotatif peut être pivoté par rapport à la portion de carénage. Les profilés 202 étant solidaires en rotation des tiges 406, cette rotation est transmise aux profilés et donc aux bulbes 300 et aux hélices 302.The first rotary assembly can be rotated relative to the fairing portion. The profiles 202 being integral in rotation of the rods 406, this rotation is transmitted to the profiles and therefore to the bulbs 300 and the propellers 302.

Dans un mode de réalisation non illustré, le premier ensemble rotatif 400 peut être pivoté manuellement par rapport à la portion de carénage. Dans le mode de réalisation préférentiel illustré, un moteur électrique 102, visible notamment sur la figure 4a, est prévu à cet effet. Ce moteur entraîne une poulie 104 à axe vertical, qui entraine à son tour par l'intermédiaire d'une courroie 106 l'axe d'orientation 108 équipé d'une poulie menée 110 et d'un palier à roulement à billes 112.In a non-illustrated embodiment, the first rotatable assembly 400 may be manually rotated relative to the fairing portion. In the preferred embodiment illustrated, an electric motor 102, visible in particular on the figure 4a , is provided for this purpose. This motor drives a pulley 104 with vertical axis, which in turn drives via a belt 106 the axis of orientation 108 equipped with a driven pulley 110 and a rolling bearing ball 112.

Deux courroies plates 116 et 118 sont fixées à une de leurs extrémités sur la portion de carénage 208 et à l'autre extrémité sur une portée de l'axe d'orientation 108, de manière à ce que la première courroie plate 116 se déroule et la deuxième courroie 118 s'enroule lorsque le moteur tourne dans un premier sens, et vice-versa lorsque le moteur tourne dans l'autre sens. La traction exercée sur la courroie 116, respectivement 118 provoque la rotation de l'ensemble rotatif 400. Un support 120 monté d'un palier permet d'assurer la rigidité de l'axe d'enroulement.Two flat belts 116 and 118 are attached at one end to the fairing portion 208 and at the other end to a bearing of the orientation axis 108, so that the first flat belt 116 is unwound and the second belt 118 is wound when the engine rotates in a first direction, and vice versa when the engine rotates in the other direction. The traction exerted on the belt 116 or 118 causes rotation of the rotary assembly 400. A support 120 mounted on a bearing makes it possible to ensure the rigidity of the winding axis.

Dans une variante, le moteur 102 peut être commandé par un navigateur GPS ou par conduite assistée.In a variant, the engine 102 can be controlled by a GPS navigator or by assisted driving.

Bien que nous venons de décrire le premier ensemble 400 permettant l'orientation de l'hélice par rapport au bateau pour le faire tourner. Ce premier ensemble rotatif 400 peut également être bloqué sur la portion de carénage de manière à ce que l'hélice ne puisse pas s'orienter.Although we have just described the first set 400 allowing the orientation of the propeller relative to the boat to rotate it. This first rotational assembly 400 can also be blocked on the fairing portion so that the helix can not be oriented.

Nous allons maintenant décrire le système permettant de rétracter l'hélice pour la remonter ou la descendre.We will now describe the system for retracting the propeller up or down.

A cet effet, le propulseur comporte un deuxième ensemble 500 apte à être translaté par rapport au premier ensemble 400 et à la première portion de carénage 208 afin de rétracter l'hélice 302. Ce système permet donc de déplacer l'hélice entre une position rétractée à l'intérieur du bateau et une position de travail déployée à l'extérieur du bateau. Des détails de ce deuxième ensemble sont notamment visibles sur la figure 4b.For this purpose, the thruster comprises a second assembly 500 adapted to be translated relative to the first assembly 400 and the first fairing portion 208 to retract the propeller 302. This system therefore allows the propeller to move between a retracted position inside the boat and a working position deployed outside the boat. Details of this second set are particularly visible on the figure 4b .

Le deuxième ensemble 500 peut être rétracté manuellement, dans ce cas les tiges 406 peuvent être lisses et non rotatives. Dans l'exemple préférentiel illustré, le deuxième ensemble 500 peut être rétracté de manière motorisée grâce au deuxième moteur 130 avec transmission. Ce moteur 130 est fixé sur une plaque support 150 et entraîne une poulie 132, qui entraîne à son tour la courroie 134 entrainant quatre poulies crantées 138. Les quatre poulies 138 sont montées chacune sur un axe entraineur 136 équipé d'un palier avec roulements à billes 140. A l'enclenchement du moteur 130, ces quatre axes entraîneurs 136 entraînent en rotation par l'intermédiaire d'une bague d'entraînement 144 les quatre tiges filetées 406 qui tournent sur elles-mêmes. Les deux chariots 501 montés deux à deux sur les tiges 406 au travers d'écrous filetés 148 montent ou descendent ainsi le long de ces tiges, selon le sens de rotation. Comme on l'a vu, chaque profilé 202 est monté sur l'un des chariots 501, en sorte que ces profilés et le bulbe qui leur est lié suit les déplacements verticaux des chariots. Les éléments sont dimensionnés de manière à ce que la courroie 2 d'entraînement de l'hélice soit parfaitement tendue lorsque les chariots sont tout en bas, chaque brin s'enroulant sur lui-même entre le bras de liaison et la portion de carénage lorsque l'hélice est rétractée.The second set 500 can be retracted manually, in this case the rods 406 can be smooth and non-rotating. In the preferred example illustrated, the second assembly 500 can be retracted in a motorized manner by the second motor 130 with transmission. This motor 130 is fixed on a support plate 150 and drives a pulley 132, which leads to turn the belt 134 resulting in four toothed pulleys 138. The four pulleys 138 are each mounted on a drive shaft 136 equipped with a bearing with ball bearings 140. When the motor 130 engages, these four drive axes 136 rotate. by means of a drive ring 144 the four threaded rods 406 which rotate on themselves. The two carriages 501 mounted in pairs on the rods 406 through threaded nuts 148 thus rise or fall along these rods, according to the direction of rotation. As we have seen, each section 202 is mounted on one of the carriages 501, so that these profiles and the bulb attached thereto follows the vertical movements of the carriages. The elements are dimensioned so that the drive belt 2 of the propeller is perfectly stretched when the carriages are at the bottom, each strand winding on itself between the link arm and the fairing portion when the propeller is retracted.

Grâce aux inserts 408 qui maintiennent les tiges 406 de manière semi-rigide, les tiges entraînent les chariots 501 sans risque de blocage. Les poulies folles 146 permettent de tendre la courroie.Thanks to the inserts 408 which hold the rods 406 semi-rigidly, the rods drive the carriages 501 without risk of blockage. The idle pulleys 146 make it possible to tension the belt.

Bien que nous venons de décrire le deuxième ensemble 500 permettant de rétracter l'hélice. Ce deuxième ensemble peut également être bloqué sur le premier ensemble de manière à ne pas rétracter l'hélice.Although we have just described the second set 500 for retracting the helix. This second set can also be blocked on the first set so as not to retract the propeller.

Selon un mode de réalisation, le propulseur peut être monté dans le bateau de façon In-bord comme illustre la figure 5a. Selon un autre mode de réalisation, le propulseur peut être monté de façon Out-bord comme illustré sur la figure 5b. Dans un autre mode de réalisation, le propulseur peut être intégré directement dans le tableau arrière du bateau comme illustré sur la figure 5c.According to one embodiment, the thruster can be mounted in the ship inboard way as shown in FIG. figure 5a . According to another embodiment, the thruster can be mounted outboard as shown in FIG. figure 5b . In another embodiment, the thruster can be integrated directly into the transom of the boat as illustrated on the figure 5c .

Un autre exemple de réalisation de la présente invention est représenté aux figures 8 à 15.Another embodiment of the present invention is shown in Figures 8 to 15 .

Le propulseur selon ce deuxième exemple de réalisation de la présente invention ne diffère pas de manière fondamentale du propulseur selon le premier exemple de la présente invention, décrit sur les figures 1 à 7. Cependant, ce deuxième exemple de réalisation de la présente invention comprend aussi quelques nouveaux éléments avec les avantages particuliers.The thruster according to this second embodiment of the present invention does not differ fundamentally from the thruster according to the first example of the present invention, described on the Figures 1 to 7 . However, this second embodiment of the present invention also includes some new elements with particular advantages.

Le propulseur selon ce deuxième exemple de réalisation de la présente invention 1000 illustré sur les figures 8 et 9 comporte aussi un ensemble de motorisation 1500 à l'intérieur d'une enveloppe 1100, un carénage 1200 englobant l'ensemble 1600 permettant de réaliser les fonctions de rétraction et orientation de l'hélice, un bras de liaison 1300 et un bulbe d'hélice 1400. Cet ensemble de motorisation 1500 (représenté de manière plus détaillée aux figures 14a et 14b où sont notamment visibles les mécanismes de transmission relatifs aux fonctions de rétraction et orientation) comprend, contrairement à la solution selon le premier exemple de la réalisation de l'invention décrit ci-dessus, généralement plusieurs moteurs, à savoir un moteur ou encore plusieurs moteurs (trois moteurs dans l'exemple) d'entraînement de l'hélice, ainsi que deux autres moteurs utilisés pour la fonction de rétraction et la fonction d'orientation d'hélice respectivement. En ce qui concerne le moteur utilisé pour faire avancer le bateau, il transmet le couple sur la grande poulie de l'axe de transmission avec une ou plusieurs courroies. Une autre différence par rapport au premier exemple de l'invention, la transmission de couple du moteur de l'orientation de l'hélice n'est plus réalisée à l'aide de deux courroies, mais plutôt à l'aide d'une seule courroie qui engrène sur une roue dentée qui est maintenue par l'enveloppe fixe 1100 de l'ensemble de motorisation 1500. L'enclenchement du moteur provoque une traction sur un brin et la rotation des ensembles compris dans l'enveloppe 1100.The thruster according to this second embodiment of the present invention 1000 illustrated on the figures 8 and 9 also comprises an engine assembly 1500 within an envelope 1100, a fairing 1200 encompassing the assembly 1600 for performing the functions of retraction and orientation of the propeller, a connecting arm 1300 and a propeller bulb 1400. This set of motorization 1500 (shown in more detail in Figures 14a and 14b where, in particular, the transmission mechanisms relating to the retraction and orientation functions) comprise, contrary to the solution according to the first example of the embodiment of the invention described above, generally several engines, namely a motor or several motors. (three motors in the example) drive the propeller, as well as two other motors used for the retraction function and the propeller orientation function respectively. As for the engine used to move the boat forward, it transmits the torque on the large pulley of the transmission shaft with one or more belts. Another difference with respect to the first example of the invention, the torque transmission of the motor of the orientation of the propeller is no longer achieved using two belts, but rather with the aid of a single belt which meshes with a toothed wheel which is held by the fixed casing 1100 of the motor assembly 1500. The engagement of the motor causes traction on a strand and the rotation of the assemblies included in the casing 1100.

Comme avec le premier exemple, chacun des moteurs dans l'ensemble de motorisation 1500 peut être un moteur électrique ou hydraulique.As with the first example, each of the engines in the 1500 engine assembly may be an electric or hydraulic motor.

Comme visible aux figures 10a et 10b, un mécanisme permet de maintenir la tension de la courroie pendant la rétraction du bras de liaison avec l'hélice, et tout au long de son déplacement. En effet, à cette fin, la courroie est enroulée grâce à une première poulie fixée sur le bras (en bas dans les figures 10a et 10b) et une deuxième poulie fixée sur la flasque de l'ensemble rotatif. Il est visible qu'une partie de la courroie est « écartée » de côté par un système correspondant, comportant un bras pivotable et une autre poulie.As visible to Figures 10a and 10b a mechanism makes it possible to maintain the tension of the belt during the retraction of the connecting arm with the propeller, and throughout its movement. Indeed, for this purpose, the belt is rolled up thanks to a first pulley fixed on the arm (at the bottom in the Figures 10a and 10b ) and a second pulley fixed to the flange of the rotary assembly. It is visible that part of the belt is "spread" aside by a corresponding system, having a pivotable arm and another pulley.

Le bras de liaison 1300 avec le bulbe de l'hélice 1400 est illustré à la figure 11. Il comporte deux profilés creux 1310 et 1320 logeant les brins de la courroie qui sont fixés en haut sur les chariots mobiles 1340 et 1350. Visibles sur les chariots mobiles 1340 et 1350 sont les écrous 1360 qui collaborent avec les tiges filetées de l'ensemble rotatif pour réaliser l'escamotage du bras de liaison 1300 et de l'hélice. Egalement visible est la poulie 1330 utilisée dans le processus d'escamotage.The link arm 1300 with the bulb of the propeller 1400 is shown in FIG. figure 11 . It comprises two hollow profiles 1310 and 1320 housing the strands of the belt which are fixed at the top on the mobile carriages 1340 and 1350. Visible on the mobile carriages 1340 and 1350 are the nuts 1360 which collaborate with the threaded rods of the rotary assembly to achieve the retraction of the connecting arm 1300 and the propeller. Also visible is the pulley 1330 used in the process of retraction.

La figure 12 illustre le carénage 1200 du propulseur 1000. Il comprend un palier inférieur 1210 et un palier supérieur 1250 et une paroi cylindrique 1270. Le palier inférieur 1210 et le palier supérieur 1250 du carénage 1200 sont fixés en opposition sur l'enveloppe cylindrique 1270 à l'aide de trois tiges filetées 1220, 1230, dont deux (les tiges 1220) sont utilisées avec l'élément de fixation 1260 pour fixer le carénage 1200 au bateau.The figure 12 illustrates the fairing 1200 of the thruster 1000. It comprises a lower bearing 1210 and an upper bearing 1250 and a cylindrical wall 1270. The lower bearing 1210 and the upper bearing 1250 of the fairing 1200 are fixed in opposition to the cylindrical envelope 1270 to the using three threaded rods 1220, 1230, two of which (the rods 1220) are used with the fastener 1260 to attach the fairing 1200 to the boat.

L'ensemble rotatif 1600 utilisé dans ce deuxième exemple de réalisation de la présente invention est représenté à la figure 13. Cet ensemble rotatif 1600 comprend un flasque inférieur 1610 et un flasque supérieur 1650 qui sont reliés entre eux par les tiges 1620. Le bras pivotable 1630 avec la poulie 1640 permettant l'écartement de la courroie d'entraînement, tel que représenté et mentionné en relation avec les figures 10a et 10b. Visible à la figure 13 est également le mécanisme de transmission de la rotation vers les tiges 1620 par le biais des poulies 1670 et courroies 1680. Le guidage orientable équipé de quatre tiges filetées 1620 avec écrous en rotation synchronisées avec à ces extrémités des inserts spéciaux permet de transmettre des gros efforts, permettant aussi un déplacement sans risque de coincement.The rotary assembly 1600 used in this second embodiment of the present invention is shown in FIG. figure 13 . This rotary assembly 1600 comprises a lower flange 1610 and an upper flange 1650 which are interconnected by the rods 1620. The pivotable arm 1630 with the pulley 1640 allowing the spacing of the drive belt, as shown and mentioned in relation with the Figures 10a and 10b . Visible to the figure 13 is also the transmission mechanism of the rotation to the rods 1620 through pulleys 1670 and 1680 belts. The swiveling guide equipped with four threaded rods 1620 with synchronized rotating nuts with special inserts at these ends makes it possible to transmit big efforts. , also allowing a displacement without risk of jamming.

Contrairement à l'ensemble rotatif selon le premier exemple de réalisation de l'invention, où seulement le flasque supérieur empêchait l'ensemble de ce déplacer verticalement, dans l'ensemble rotatif selon ce deuxième exemple de réalisation de l'invention ce sont les deux flasques supérieur 1650 et inférieur 1610 qui maintiennent l'ensemble rotatif et de ce fait le bras amovible.Unlike the rotary assembly according to the first embodiment of the invention, where only the upper flange prevented all of this move vertically, in the rotating assembly according to this second embodiment of the invention are the two Upper flanges 1650 and lower 1610 which hold the rotating assembly and thus the removable arm.

En outre, contrairement à l'ensemble rotatif selon le premier exemple de réalisation de l'invention, l'axe de transmission n'est plus directement relié au moteur. Plutôt, à la place du moteur, cette variante de l'invention prévoit un arbre de transmission avec une grande poulie 1660 afin de créer avec la poulie du moteur un rapport de transmission réducteur d'environ 1/3. Grâce à cette modification, on est capable d'obtenir une rotation d'hélice plus lente avec un couple transmis sur l'hélice plus important, ce qui permet d'utiliser une hélice plus grande et d'améliorer ainsi le rendement de l'ensemble d'une manière très significative.In addition, unlike the rotary assembly according to the first embodiment of the invention, the transmission axis is no longer directly connected to the engine. Rather, instead of the engine, this variant of the invention provides a transmission shaft with a large pulley 1660 to create with the engine pulley a reduction gear ratio of about 1/3. Thanks to this modification, it is possible to obtain a slower propeller rotation with a torque transmitted on the larger propeller, which makes it possible to use a larger propeller and thus to improve the overall efficiency. in a very significant way.

Il est aussi important de mentionner qu'une très grande partie du propulseur selon le deuxième exemple de réalisation de la présente invention peut être réalisé dans des matériaux composites.It is also important to mention that a very large part of the thruster according to the second embodiment of the present invention can be made in composite materials.

Claims (15)

  1. A propulsion system (1) for a boat, comprising:
    a motor (100);
    a connecting arm (200);
    a fairing portion (208) intended for being mounted on the boat;
    at least one propeller (302); and
    a belt (2) for transmitting the torque from the said motor (100) to the said at least one propeller (302), the said belt (2) forming two belt sections between the said motor (100) and the said propeller (302),
    characterized in that the propulsion system (1) further comprises:
    a first rotary assembly (400) with the belt (2) passing there-through and capable of pivoting relative to the first fairing portion (208) about a geometrical axis directed towards the top, so as to orient the said at least one propeller (302) relative to the boat in order to turn the latter; and
    a second assembly (500) capable of being translated relative to the first rotary assembly (400) in order to retract the said at least one propeller (302).
  2. Propulsion system according to claim 1, wherein the said connecting arm (200) comprises two sections (202) set apart from each other, a single belt section passing through each said section (202).
  3. Propulsion system according to one of the claims 1 to 2 wherein the said arm (200) is non-impervious.
  4. Propulsion system according to claim 2, or claim 3 when dependent upon claim 2, wherein the said two sections (202) of the said arm (200) form fins.
  5. Propulsion system according to one of the claims 1 to 4 wherein each at least one said propeller (302) is accommodated in a bulbous part (300) and is mounted on a shaft (311).
  6. Propulsion system according to claim 5, wherein the said at least one propeller (302) is mounted in a removable way on the said shaft (311).
  7. Propulsion system according to one of the claims 1 to 6, comprising a first electric motor (102) to make the first rotary assembly (400) pivot.
  8. Propulsion system according to one of the claims 1 to 7, comprising two belts (116) and (118) in opposition, fixed at their ends to the fairing portion (208) and put under traction by the said first electric motor (102).
  9. Propulsion system according to one of the claims 1 to 8, wherein the first rotary assembly (400) is able to be pivoted manually.
  10. Propulsion system according to one of the claims 1 to 9, the first assembly (400) comprising an upper flange (406) <sic. (402)> and a lower flange (408) <sic. (404)> connected to each other by rods (406).
  11. Propulsion system according to claim 10, wherein the said rods (406) are rotary and threaded.
  12. Propulsion system according to claim 11 wherein the said rods are fixed to the flanges by means of semi-rigid inserts (408).
  13. Propulsion system according to one of the claims 1 to 12 wherein the second assembly (500) is able to be translated manually.
  14. Propulsion system according to one of the claims 1 to 13, comprising a second electric motor (130) to make the said second assembly (500) translate.
  15. Boat equipped with a propulsion system according to one of the claims 1 to 14.
EP16717350.9A 2015-04-15 2016-04-15 Propulsion system for a boat Active EP3283366B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20191377 HRP20191377T1 (en) 2015-04-15 2019-07-31 Propulsion system for a boat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00526/15A CH711021A1 (en) 2015-04-15 2015-04-15 Boat propeller.
PCT/EP2016/058423 WO2016166331A1 (en) 2015-04-15 2016-04-15 Propulsion system for a boat

Publications (2)

Publication Number Publication Date
EP3283366A1 EP3283366A1 (en) 2018-02-21
EP3283366B1 true EP3283366B1 (en) 2019-07-10

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EP16717350.9A Active EP3283366B1 (en) 2015-04-15 2016-04-15 Propulsion system for a boat

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US (1) US10065723B2 (en)
EP (1) EP3283366B1 (en)
AU (1) AU2016249946B2 (en)
CA (1) CA2982404A1 (en)
CH (1) CH711021A1 (en)
ES (1) ES2747988T3 (en)
HR (1) HRP20191377T1 (en)
WO (1) WO2016166331A1 (en)

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EP3225533A1 (en) * 2016-03-31 2017-10-04 VOLTA BOATS GmbH Propeller system for a watercraft
IT201700046145A1 (en) * 2017-04-28 2018-10-28 Hytem S R L Outboard propulsion unit for boats and boats equipped with this propulsion unit.
EP3511056A1 (en) * 2018-01-12 2019-07-17 Societe Industrielle Radio Electrique Et Mecanique "Sirem" Counter-current swimming system and pool installation comprising such a system
KR102677950B1 (en) * 2019-03-27 2024-06-24 한화오션 주식회사 Pod-type propulsion apparatus having mutiple strut
KR102678871B1 (en) * 2019-03-27 2024-06-26 한화오션 주식회사 Pod-type propulsion apparatus having mutiple strut installed subsidiary propulsion module and method for propulsion of vessel using the same
US11834144B2 (en) 2020-05-29 2023-12-05 Flux Marine Ltd. Dual strut power transmission housing structure of a marine propulsion system
AT525141B1 (en) 2021-05-14 2022-12-15 Horst Pesendorfer Dipl Ing Fh propulsion system
JP2024538105A (en) * 2021-10-15 2024-10-18 フラックス マリーン リミテッド Modular belt tensioning mechanism and power head structure for marine propulsion system

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Also Published As

Publication number Publication date
US10065723B2 (en) 2018-09-04
WO2016166331A1 (en) 2016-10-20
CA2982404A1 (en) 2016-10-20
US20180079477A1 (en) 2018-03-22
CH711021A1 (en) 2016-10-31
ES2747988T3 (en) 2020-03-12
HRP20191377T1 (en) 2019-11-29
AU2016249946B2 (en) 2020-09-24
EP3283366A1 (en) 2018-02-21
AU2016249946A1 (en) 2017-10-26

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