FR2834686A1 - Shock absorption device for boat keel allowing controlled rearward displacement of keel along boat hull axis comprises movable connections with axial shock absorbers for keel web - Google Patents
Shock absorption device for boat keel allowing controlled rearward displacement of keel along boat hull axis comprises movable connections with axial shock absorbers for keel web Download PDFInfo
- Publication number
- FR2834686A1 FR2834686A1 FR0200405A FR0200405A FR2834686A1 FR 2834686 A1 FR2834686 A1 FR 2834686A1 FR 0200405 A FR0200405 A FR 0200405A FR 0200405 A FR0200405 A FR 0200405A FR 2834686 A1 FR2834686 A1 FR 2834686A1
- Authority
- FR
- France
- Prior art keywords
- keel
- boat
- absorption device
- shock absorption
- shock
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
- B63B43/18—Improving safety of vessels, e.g. damage control, not otherwise provided for preventing collision or grounding; reducing collision damage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
Abstract
Description
<Desc/Clms Page number 1> <Desc / Clms Page number 1>
DISPOSITIF D'ABSORPTION DE CHOCS POUR QUILLE DE BATEAU
Tous les voiliers sont équipés de dérive ou de dérive lestée communément appelée quille. Celle-ci permet de réduire la dérive du bateau, et par sa masse, d'augmenter la force de rappel, évitant au voilier de chavirer sous la force du vent latéral. SHOCK ABSORBING DEVICE FOR BOAT Keel
All sailboats are equipped with a fin or a weighted fin commonly known as a keel. This makes it possible to reduce the drift of the boat, and by its mass, to increase the restoring force, preventing the sailboat from capsizing under the force of the side wind.
Les principaux types connues de quilles sont : fixes, relevables, pendulaires, pendulaires relevables, bi-quille fixe, bi-quille pendulaire... The main known types of keels are: fixed, lifting, pendular, lifting pendular, fixed twin keel, pendular twin keel ...
Les plus performantes sont pendulaires ou pendulaires relevables car elles permettent d'adapter la force de rappel aux conditions du vent en conservant la meilleure position propulsive à la voilure et moins de gîte au bateau ; ce sont aussi les plus exposées aux risques de collision avec un corps flottant immergé ou un haut fond. The most efficient are tilting or tilting tilting because they allow the return force to be adapted to wind conditions while retaining the best propulsive position for the sails and less heeling for the boat; they are also the most exposed to the risk of collision with a submerged floating body or a shallow bottom.
De telles collisions entraînent souvent des avaries pouvant aller jusqu'à la perte du bateau, et de blesser, par leur projection au moment de l'impact, les personnes à bord. Such collisions often lead to damage that can go as far as the loss of the boat, and to injure, by their projection at the time of impact, the people on board.
Le but de la présente invention est de réduire en l'absorbant au mieux, l'impact subi par le bateau, et ses occupants. The object of the present invention is to reduce the impact on the boat and its occupants by absorbing it as well as possible.
Pour expliquer la présente invention nous décrirons son application à une quille pendulaire, puisque la plus exposée au risque de chocs. To explain the present invention, we will describe its application to a pendulum keel, since it is the most exposed to the risk of impact.
Les matériaux utilisés dans la construction d'une quille à amortissement doivent être hydrophobes et insensibles aux attaques chimiques, électrolytiques, biologiques du milieu marin (exemple : Inox, titane, composites...) pour les parties rigides, (Polyuréthane, silicone, viton...) pour les élastomères absorbeurs de choc. The materials used in the construction of a damping keel must be hydrophobic and insensitive to chemical, electrolytic, biological attacks from the marine environment (example: stainless steel, titanium, composites ...) for rigid parts, (polyurethane, silicone, viton ...) for shock absorbing elastomers.
De plus le système devra être construit de façon à interdire au mieux, dans les parties en frottement, tout dépôt biologique et pénétration de corps étrangers. In addition, the system must be constructed in such a way as to best prevent, in the friction parts, any biological deposit and penetration of foreign bodies.
Ci-après est décrit un exemple de réalisation préféré de l'invention adaptée aux quilles pendulaires et incluant l'ensemble des principes. Below is described a preferred embodiment of the invention adapted to pendulum keels and including all of the principles.
La description de cet exemple s'appuie sur les dessins annexés qui représentent : - à la Figure 1, une vue en coupe axiale de la quille d'un bateau, - à la Figure 2, une vue en coupe transversale de cette même quille. The description of this example is based on the appended drawings which represent: - in Figure 1, an axial section view of the keel of a boat, - in Figure 2, a cross-sectional view of this same keel.
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Le dispositif d'absorption de chocs sur quille de bateau comporte des moyens d'amortissement (1,..., 18) permettant un déplacement contrôlé de la quille vers l'arrière suivant sensiblement l'axe longitudinal de la coque du bateau (19). The shock absorption device on the keel of a boat comprises damping means (1, ..., 18) allowing controlled movement of the keel towards the rear along substantially the longitudinal axis of the hull of the boat (19 ).
Sur l'élément support axial 1, associé au bateau, sont fixés les sabots 2 et 3. The shoes 2 and 3 are fixed on the axial support element 1, associated with the boat.
Dans ceux-ci se logent les extrémités de l'axe longitudinal 4, entre 2 et 4, est positionné l'amortisseur 18, il peut en être de même pour 3 et 4. In these the ends of the longitudinal axis 4 are housed, between 2 and 4, the damper 18 is positioned, it can be the same for 3 and 4.
Autour de l'axe 4, rainuré partiellement dans sa partie inférieure, pour recevoir une clavette 6, solidaire du coulisseau 5, sont assemblées deux flasques latérales 9, enserrant le voile de quille 16, et intégrant l'axe de basculement 10, et l'absorbeur de choc 12. Around the axis 4, partially grooved in its lower part, to receive a key 6, integral with the slide 5, two side flanges 9 are assembled, enclosing the keel veil 16, and integrating the tilting axis 10, and l shock absorber 12.
A l'arrière du coulisseau 5, entre celui-ci et l'avant du sabot arrière 3, est disposé un absorbeur de choc, constitué de rondelles élastomères 7, séparées par des rondelles rigides de répartition de l'énergie à absorber 8, lorsque le coulisseau recule à l'impact et ce quelle que soit la position angulaire latérale du voile de quille (9/16). At the rear of the slide 5, between the latter and the front of the rear shoe 3, is disposed a shock absorber, consisting of elastomer washers 7, separated by rigid washers for distributing the energy to be absorbed 8, when the slide moves back on impact, regardless of the lateral angular position of the keel sail (9/16).
L'amortisseur 12, est intégré dans l'épaisseur constituée par les deux flaques latérales 9 et le voile de quille 16. The damper 12 is integrated into the thickness formed by the two lateral puddles 9 and the keel veil 16.
Il occupe un secteur angulaire situé au-dessus de l'axe de basculement vers l'arrière 10. It occupies an angular sector situated above the rear tilting axis 10.
Au choc sur le voile de quille 16, et après avoir cisaillé la butée élastomère étalonnée 11, le voile de quille 16, bascule vers l'arrière, autour de l'axe 10. La partie 13 du voile de quille 16, prise entre les flasques 9 vient alors comprimer les plaques élastomères 14, et les plaques de répartition d'effort 15, absorbant une partie de l'énergie due à l'impact sur le voile de quille 16. On impact on the keel veil 16, and after having sheared the calibrated elastomeric stop 11, the keel veil 16 swings backwards around the axis 10. The part 13 of the keel veil 16, taken between the flanges 9 then compress the elastomeric plates 14, and the force distribution plates 15, absorbing part of the energy due to the impact on the keel sail 16.
La collision passée, l'énergie accumulée par les élastomères 7,14 et 18, ramènent les éléments à leur position d'origine. Seule la butée 11, cisaillée devra être remplacée au plutôt. The past collision, the energy accumulated by the elastomers 7, 14 and 18, bring the elements back to their original position. Only the stop 11, sheared should be replaced instead.
L'amortisseur 18, évite en dissipant l'énergie résultante d'un impact, le matri- çage entre les sabots 2 et 3, et l'axe 4. The damper 18, by dissipating the energy resulting from an impact, prevents the matrixing between the shoes 2 and 3 and the axis 4.
Par ces moyens la durée de l'impact et considérablement allongée, diluant celui-ci, et réduisant l'énergie instantanée. By these means the duration of the impact is considerably lengthened, diluting it, and reducing the instantaneous energy.
Cet allongement du temps de dissipation de l'énergie d'impact permet au bateau dans le même temps de modifier par rétroaction l'angle de choc réduisant encore les conséquences du choc initial. This extension of the dissipation time of the impact energy allows the boat at the same time to modify the impact angle by feedback, further reducing the consequences of the initial impact.
<Desc/Clms Page number 3> <Desc / Clms Page number 3>
NOMENCLATURE 1-Plaque support axial d'association à la coque du bateau, 2-Sabot de fixation avant du support axial, 3-Sabot de fixation arrière du support axial, 4-Axe longitudinal associé aux sabots de fixation, 5-Coulisseau associé au voile de quille, 6-Clavette de guidage solidaire au coulisseau, 7-Élément élastomère de l'absorbeur de choc longitudinal, 8-Plaques de répartition d'effort sur l'élément élastomère longitudinal, 9 - Flasques latérales supérieures enserrant le voile de quille, constituant le sup- port axial, 10-Axe de basculement, 11-Moyen de butée cisaillable étalonné, 12 - Secteur radial servant de logement à un absorbeur de choc, 13-Partie du voile de quille comprimant l'absorbeur du secteur axial, 14-Élément élastomère de l'absorbeur de choc du secteur axial, 15-Plaques de répartitions d'effort sur l'élément élastomère du secteur axial, 16-Voile de quille, 17-Lest, 18-Absorbeur de choc d'extrémité d'axe, 19-Coque du bateau. NOMENCLATURE 1-Axial support plate for association with the boat hull, 2-Front fixing shoe for the axial support, 3-Rear fixing shoe for the axial support, 4-Longitudinal axis associated with the fixing shoes, 5-Slide associated with the keel veil, 6-Guide key secured to the slide, 7-Elastomer element of the longitudinal shock absorber, 8-Plates of force distribution on the longitudinal elastomer element, 9 - Upper lateral flanges enclosing the keel veil , constituting the axial support, 10-Tilting axis, 11-Calibrated shearable abutment means, 12 - Radial sector serving as a shock absorber, 13-Part of the keel veil compressing the absorber of the axial sector, 14-Elastomer element of the axial sector shock absorber, 15-Plates of force distribution on the elastomer element of the axial sector, 16-Keel sail, 17-Ballast, 18-End shock absorber d 'axis, 19-Hull of the boat.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0200405A FR2834686A1 (en) | 2002-01-15 | 2002-01-15 | Shock absorption device for boat keel allowing controlled rearward displacement of keel along boat hull axis comprises movable connections with axial shock absorbers for keel web |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0200405A FR2834686A1 (en) | 2002-01-15 | 2002-01-15 | Shock absorption device for boat keel allowing controlled rearward displacement of keel along boat hull axis comprises movable connections with axial shock absorbers for keel web |
Publications (1)
Publication Number | Publication Date |
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FR2834686A1 true FR2834686A1 (en) | 2003-07-18 |
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Family Applications (1)
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FR0200405A Pending FR2834686A1 (en) | 2002-01-15 | 2002-01-15 | Shock absorption device for boat keel allowing controlled rearward displacement of keel along boat hull axis comprises movable connections with axial shock absorbers for keel web |
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FR (1) | FR2834686A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1614619A1 (en) * | 2004-07-09 | 2006-01-11 | Modus Marine Safety BV i.o. | Impact absorbing part of a ship |
WO2006005556A1 (en) * | 2004-07-09 | 2006-01-19 | Modus Marine Safety B.V.I.O. | Impact absorbing part of a ship |
WO2007084061A1 (en) * | 2006-01-23 | 2007-07-26 | Svea Teknik Ab | Apparatus for attachment of a keel, and also an arrangement and a sailing boat comprising the apparatus |
EP2000402A1 (en) * | 2007-06-04 | 2008-12-10 | Schneeberger, Jürg | Keel device for a water vehicle |
WO2012140379A1 (en) * | 2011-04-14 | 2012-10-18 | Becel Philippe | Retractable boat keel |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR936478A (en) * | 1946-12-05 | 1948-02-16 | ||
US3572279A (en) * | 1969-03-11 | 1971-03-23 | Ernest Clyde Smoot Jr | Shock-and-dig-relieving daggerboard |
US3951090A (en) * | 1973-12-03 | 1976-04-20 | Potter Instrument Company, Inc. | Hydraulic system for raising and lowering keel |
GB2239842A (en) * | 1989-12-20 | 1991-07-17 | John Graham Walker | Device to reduce turbulence in marine craft |
US5410977A (en) * | 1994-04-08 | 1995-05-02 | Webb; William B. | Rudderless sailboat |
-
2002
- 2002-01-15 FR FR0200405A patent/FR2834686A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR936478A (en) * | 1946-12-05 | 1948-02-16 | ||
US3572279A (en) * | 1969-03-11 | 1971-03-23 | Ernest Clyde Smoot Jr | Shock-and-dig-relieving daggerboard |
US3951090A (en) * | 1973-12-03 | 1976-04-20 | Potter Instrument Company, Inc. | Hydraulic system for raising and lowering keel |
GB2239842A (en) * | 1989-12-20 | 1991-07-17 | John Graham Walker | Device to reduce turbulence in marine craft |
US5410977A (en) * | 1994-04-08 | 1995-05-02 | Webb; William B. | Rudderless sailboat |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1614619A1 (en) * | 2004-07-09 | 2006-01-11 | Modus Marine Safety BV i.o. | Impact absorbing part of a ship |
WO2006005556A1 (en) * | 2004-07-09 | 2006-01-19 | Modus Marine Safety B.V.I.O. | Impact absorbing part of a ship |
WO2007084061A1 (en) * | 2006-01-23 | 2007-07-26 | Svea Teknik Ab | Apparatus for attachment of a keel, and also an arrangement and a sailing boat comprising the apparatus |
EP2000402A1 (en) * | 2007-06-04 | 2008-12-10 | Schneeberger, Jürg | Keel device for a water vehicle |
WO2012140379A1 (en) * | 2011-04-14 | 2012-10-18 | Becel Philippe | Retractable boat keel |
FR2974058A1 (en) * | 2011-04-14 | 2012-10-19 | Philippe Becel | RETRACTABLE BOAT |
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