EP1976748B1 - Vorrichtung zur befestigung eines kiels und anordnung und segelboot mit der vorrichtung - Google Patents

Vorrichtung zur befestigung eines kiels und anordnung und segelboot mit der vorrichtung Download PDF

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Publication number
EP1976748B1
EP1976748B1 EP07701133A EP07701133A EP1976748B1 EP 1976748 B1 EP1976748 B1 EP 1976748B1 EP 07701133 A EP07701133 A EP 07701133A EP 07701133 A EP07701133 A EP 07701133A EP 1976748 B1 EP1976748 B1 EP 1976748B1
Authority
EP
European Patent Office
Prior art keywords
sheet
shaped element
keel
attachments
attachment
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.)
Not-in-force
Application number
EP07701133A
Other languages
English (en)
French (fr)
Other versions
EP1976748A1 (de
EP1976748A4 (de
Inventor
Rune Lindberg
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.)
Svea Teknik AB
Original Assignee
Svea Teknik AB
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 Svea Teknik AB filed Critical Svea Teknik AB
Publication of EP1976748A1 publication Critical patent/EP1976748A1/de
Publication of EP1976748A4 publication Critical patent/EP1976748A4/de
Application granted granted Critical
Publication of EP1976748B1 publication Critical patent/EP1976748B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/14—Hull parts
    • B63B3/38—Keels
    • 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
    • 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

Definitions

  • the present invention relates to an attachment apparatus for attachment of a keel to a hull base of a boat, and also an arrangement and a sailing boat comprising the attachment apparatus.
  • One object with the present invention is to provide a keel attachment that at least in part eliminates those drawbacks that are associated with apparatuses according to the state of the art.
  • One object is further to achieve an apparatus that minimises the damages that may arise on the keel and the hull of the boat in the shape of stresses/impacts at grounding or other pressure on the keel.
  • an attachment apparatus for a keel to a hull base of a boat which comprises an elongated sheet-shaped element, extending in one propagation plane, on which the keel is intended to be attached on an attachment position between the short ends of the elongated element.
  • the sheet-shaped element is arranged to be attached to the hull base of the boat by means of front attachments situated in front and at distance from the attachment position of the keel and by means of rear attachments situated behind and at distance from the attachment position of the keel, seen in the longitudinal direction of the boat.
  • the sheet-shaped element is designed to elastically deflect from said propagation plane when the element is subjected to a torque around the attachment position of the keel in a plane perpendicular against said propagation plane.
  • the sheet-shaped element below the hull contributes to distribution of the surface pressure between the hull and keel of the boat to a larger area.
  • the sheet-shaped element is designed to be able to elastically deflect in a plane perpendicular against said propagation plane, flexibility of the keel relatively the hull base can be provided for, seen in the longitudinal direction of the boat, during grounding or other pressure on the keel.
  • the attachment apparatus suitably comprises that, between the front attachments and the rear attachments, respectively, and the attachment of the keel, the sheet-shaped element is provided with thin-walled elastic portions, that admits said elastic deflection of the sheet-shaped element from said propagation plane.
  • These thin-walled elastic portions can be compared to zones of the sheet-shaped element, between the front attachments and the rear attachments, respectively, and the attachment of the keel, that forms "membrane-like" portions, which admits said elasticity of the sheet-shaped element.
  • the sheet-shaped element may suitably be produced of sheet metal, glass fibre, composite material, carbon fibres, and/or the similar, or combinations thereof. At least the zones with the "membrane-like" portions of the sheet-shaped element may have material properties and/or a shape or dimensions such that said elasticity can be achieved.
  • the elongated sheet-shaped element may preferably comprise a front tongue-shaped portion having a front end and a rear tongue-shaped portion having a rear end, whereby the front and rear attachments are arranged in the respective tongue-shaped portions.
  • the front end of the front tongue-shaped portion and the rear end of the rear tongue-shaped portion may in that respect be divided in two, such that two points of tongues are formed in the respective end, whereby the attachments are arranged in each point of tongue.
  • the sheet-shaped element can be fixedly arranged to the hull base of the boat my means of side attachments situated on each side of the attachment position of the keel, seen transversely the longitudinal direction of the sheet-shaped element. Between the side attachments and the one respectively the other short end of the sheet-shaped element, the sheet-shaped element may be provided with a tapering waist portion.
  • the present invention also relates to an arrangement comprising the attachment apparatus described above, which arrangement is characterised in that a keel is attached on the attachment position of the sheet-shaped element.
  • the arrangement can be characterised by hull base for a sailing boat, which hull base comprises a beam system, to which the sheet-shaped element is attached.
  • the side attachments of the sheet-shaped element may on each sides of the keel, be attached to a transverse beam, that extends across and centrally over the elongated sheet-shaped element.
  • the attachments of the sheet-shaped element on distance in front and behind the keel, can be attached to a front transverse beam, that is arranged in front and parallel to the central transverse beam, respectively a rear transverse beam, that is arranged behind and parallel to the central transverse beam.
  • the present invention also relates to a sailboat comprising the attachment apparatus or the arrangement described above.
  • an attachment apparatus 2 intended for a keel 4, that may comprise a bulbous of lead 5, to a hull base 6 of a boat and an arrangement 8 comprising the attachment apparatus 2.
  • the attachment apparatus 2 comprises a sheet-shaped element 10, extending longitudinally and elongated L of the boat in a propagation plane P. Consequently, the longitudinal extension L is in a direction between the fore of the boat in one direction 12 and the aft of the boat in the opposite other direction 13.
  • the sheet-shaped element 10 may suitably be of a small thickness T and can be completely or partly formed of suitable materials such as sheet metal, glass fibre, composite material, carbon fibres, and/or the similar, or a combination of materials.
  • a keel 4 to a boat is intended to be attached on an attachment position 14 on the sheet-shaped element 10, between the short ends 16, 18 of the elongated element.
  • the sheet-shaped element 10 is arranged to be fixed to the hull base 6 of the boat by means of front attachments 20, such as fasteners, for instance screw joint reinforcement, situated in front (in direction 12 towards the fore of the boat) and on distance from the attachment position 14 of the keel, and by means of rear attachments 22, such as fasteners, for instance screw joint reinforcement, situated behind (in direction 13 towards the aft of the boat) and on distance from the attachment position 14 of the keel, seen in the longitudinal extension L of the boat.
  • front attachments 20 such as fasteners, for instance screw joint reinforcement, situated in front (in direction 12 towards the fore of the boat) and on distance from the attachment position 14 of the keel
  • rear attachments 22 such as fasteners, for instance screw joint reinforcement
  • the sheet-shaped element 10 When grounding or other pressure F on the keel, the sheet-shaped element 10 is arranged such that it can be elastic in a plane perpendicular V against said propagation plane P. As a consequence of this, owing to that, the keel 4 is allowed to be elastic relatively the hull base 6 seen in the longitudinal extension L of the boat.
  • the sheet-shaped element 10 is designed such that, with respect to material properties and/or configuration/dimensions, that it elastically deflects from said propagation plane P when the element 10 is subjected to a torque around the attachment position 14 of the keel in a plane perpendicular V against said propagation plane P.
  • the sheet-shaped element 10 is provided with thin-walled elastic portions 24, 26, that admits said elastic deflection of the sheet-shaped element 10 from said propagation plane P.
  • the thin-walled elastic portions 24, 26 can be compared to shaping of defined zones of the sheet-shaped element between the front attachments and the rear attachments 22, 24, respectively, and the attachment position 14 of the keel, that forms "membrane-like" portions 24, 26, which admits said elasticity of the sheet-shaped element 10.
  • the broken line 10' in fig. 1A shows a condition when the sheet is elastic as a consequence of a stress F.
  • Such mentioned and defined, or partial, zones of the sheet-shaped element 10 may for example be achieved by plastical treatment of a sheet metal and/or by the shaping itself of the sheet-shaped element, such as for instance with tongue-shaped portions and a waist (described below).
  • the elongated sheet-shaped element 10 may comprise a front tongue-shaped portion 28 having a front end 30 and a rear tongue-shaped portion 32 having a rear end 34, whereby the front and rear attachments 20, 22 are arranged in the respective tongue-shaped portions 28, 32.
  • the front end 30 of the front tongue-shaped portion 28 and the rear end 34 of the rear tongue-shaped portion 32 may in that respect be divided in two, such that two points of tongues 36, 38 are formed in the respective end 30, 34, whereby the attachments 20, 22 are arranged in each point of tongue 36, 38.
  • This configuration in two-piece points of tongues 36, 38, formed in the respective ends of the sheet-shaped element 10 contributes to the forming of the "membrane-like" portions 24, 26 and to create a desired elasticity.
  • the sheet-shaped element 10 may preferably be arranged to be fixed to the hull base 6 by means of side attachments 40 (only evident on one side in fig. 2 ), such as fasteners, for example screw joint reinforcement, situated on each side of the keel, seen in the transverse direction of the keel, across the longitudinal extension L of the boat and the sheet-shaped element, but suitably in close vicinity to the attachment position 14 of the keel.
  • side attachments 40 and the short ends 16, 18 of the sheet-shaped element, or the preferred tongue-shaped portions 28, 32, alternatively points of tongues 36, 38 the sheet-shaped element 10 may be provided with a tapering waist portion 41.
  • the present invention also relates to an arrangement 8 comprising the attachment apparatus 2 described above, which arrangement is characterised in that a keel 4 is attached on the attachment position 14 of the sheet-shaped element 10, as evident from figs. 1-3 .
  • the present invention also relates to a sailboat comprising the attachment apparatus 2 described above.
  • the sheet-shaped element 10 is attached to the beam construction/system 42 of the hull base 6 of the sailboat, as evident from fig. 3 .
  • the side attachments 40 of the sheet-shaped element on each side of the keel 4 are suitably attached to a central transverse beam 44 arranged across at the position over the keel 4 in the longitudinal extension L of the boat and the sheet-shaped element.
  • the attachments 20, 22 of the sheet-shaped element, on distance in front and behind the keel 4, are suitably attached to a front transverse beam 46, that is arranged in front and parallel to the central transverse beam 44, respectively a rear transverse beam 48, that is arranged behind and parallel to the central transverse beam 44.
  • the attachments 20, 22, to the front respectively the rear transverse beam 46, 48 are arranged in the preferred front and rear points of tongues 36, 38, respectively, that are formed in the respective end of said tongue-shaped portions 28, 32.
  • the beam system 42 contributes in distribution of the arising forces F, e.g. impacts at grounding or other influence on the keel, to the hull 6.
  • the principle is that the keel 4 is intended to be arranged such that it may rotate around a theoretic point of rotation R at the attachment 14 of the keel to the sheet-shaped element 10 under pressure on the keel through impacts F, such as at grounding or other influence.
  • the defined, partial zones that are designed as the "membranes" 24, 26, formed by the design of the tongue-shaped portions 28, 32, or alternatively by material properties of the sheet-shaped element in these zones, are arranged to curve and be elastic substantially in a plane perpendicular V against the propagation plane P of the sheet-shaped element.
  • a rotation of the keel at a stress F does not have to make a rotation in a certain point of rotation, but may also imply another movement of the keel 4 at the attachment position 14 along a curve/line.
  • the sheet-shaped element 10 By providing areas/zones in front and astern of the point of rotation R of the keel (or alternatively a pivot) for rotation, which areas/zones may work as an energy absorbing membrane 24, 26, stress concentrations in the hull 6 of the boat can, to a large extent, be avoided. If the sheet-shaped element 10 is designed in accordance to the present invention, it may resist the surface pressure between the blade of the keel 4 and the hull 6, and fatigue damages at the long sides 50 of the keel can be prevented.
  • the beam construction 42 is attached within the hull, in the base of the hull, in such a way that said surfaces of the membrane 24, 26, of the sheet-shaped element 10 are admitted to be elastic without immediately displacing the attachment positions.
  • the beam system 42 is placed within the hull 6 and attached in the hull at areas essentially outside the working ranges of the membranes 24, 26. This results in that the beam system 42 does not instantaneously will be "torn" away at a grounding F. Any other forces that origin from the pressure of the mast, shroud attachments, etc., are carried through bulkheads and reinforcements down to the beam system. The flexibility of the construction substantially increases the durability against grounding. By the mentioned solution, according to the present invention, the action of the forces is restructured in a way that is permitted to be easier calculated/dimensioned.
  • the present invention is related to a sheet-shaped element 10, arranged in a hull base 6 of a boat, that distributes the surface pressure between the hull and the keel of the boat, to a larger area simultaneously as the sheet-shaped element 10 comprises membrane-like portions 24, 26 that contributes to the receiving, absorbing or alternatively the propagation in the structure of the impacts F that arises at grounding.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Toys (AREA)
  • Tents Or Canopies (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Support Of Aerials (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Catching Or Destruction (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Adornments (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)

Claims (11)

  1. Befestigungsvorrichtung (2) zum Befestigen eines Kiels (4) am Rumpfboden (6) eines Bootes, dadurch gekennzeichnet, dass die Befestigungsvorrichtung (2) ein längliches plattenförmiges Element (10) umfasst, welches sich über eine Ausbreitungsebene (P) erstreckt, auf welchem der Kiel (4) auf einer Befestigungsposition (14) zwischen den kurzen Enden (14, 16) des länglichen Elements befestigt werden soll, dass das plattenförmige Element (10) dafür geeignet ist, mittels vorderer Befestigungen (20), die in Längsrichtung (L) des Bootes gesehen vorne und in einer Entfernung von der Befestigungsposition (14) des Kiels angeordnet sind, und mittels hinterer Befestigungen (22), die in Längsrichtung (L) des Bootes gesehen hinten und in einer Entfernung von der Befestigungsposition (14) des Kiels angeordnet sind, am Rumpfboden (6) des Bootes befestigt zu werden, und dass das plattenförmige Element (10) so ausgestaltet ist, elastisch aus der Ausbreitungsebene (P) ausgelenkt zu werden, wenn das Element (10) einem Drehmoment um die Befestigungsposition (14) des Kiels in einer Ebene (V) ausgesetzt wird, die senkrecht auf der Ausbreitungsebene (P) steht.
  2. Befestigungsvorrichtung (2) nach Anspruch 1, dadurch gekennzeichnet, dass zwischen den vorderen Befestigungen (20) bzw. den hinteren Befestigungen (22) und der Befestigungsposition (14) des Kiels das plattenförmige Element (10) mit dünnwändigen elastischen Abschnitten (24, 26) versehen ist, welche die elastische Auslenkung des plattenförmigen Elements (10) aus der Ausbreitungsebene (P) ermöglichen.
  3. Befestigungsvorrichtung (2) nach Anspruch 1, dadurch gekennzeichnet, dass das längliche plattenförmige Element (10) einen vorderen zungenförmigen Abschnitt (28), welcher ein vorderes Ende (30) aufweist, und einen hinteren zungenförmigen Abschnitt (32) umfasst, welcher ein hinteres Ende (34) aufweist, wobei die vorderen und hinteren Befestigungen (20, 22) in den entsprechenden zungenförmigen Abschnitten (28, 32) angeordnet sind.
  4. Befestigungsvorrichtung (2) nach Anspruch 3, dadurch gekennzeichnet, dass das vordere Ende (30) des vorderen zungenförmigen Abschnitts (28) und das hintere Ende (34) des hinteren zungenförmigen Abschnitts (32) zweigeteilt ist, derart, dass an dem entsprechenden Ende (30, 34) zwei Zungenpunkte (36, 38) gebildet werden, wobei die Befestigungen (20, 22) in jedem Zungenpunkt (36, 38) angeordnet sind.
  5. Befestigungsvorrichtung (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das plattenförmige Element (10) dafür geeignet ist, mittels seitlicher Befestigungen (40) am Rumpfboden befestigt zu werden, die an jeder Seite der Befestigungsposition (14) des Kiels angeordnet sind, gesehen in der Längsausdehnung (L) des plattenförmigen Elements.
  6. Befestigungsvorrichtung (2) nach Anspruch 5, dadurch gekennzeichnet, dass zwischen den seitlichen Befestigungen (40) und einem der kurzen Enden (18) bzw. dem anderen der kurzen Enden (18) des plattenförmigen Elements (10) das plattenförmige Element (10) mit einem sich verjüngenden Abschnitt (41) einer beidseitigen Einkehlung versehen ist.
  7. Befestigungsvorrichtung (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das plattenförmige Element (10) vollständig oder teilweise aus einer Metallplatte, Glasfasern, einem zusammengesetzten Material, Kohlefasern und/oder Ähnlichem oder einer Kombination derselben ausgebildet ist.
  8. Anordnung (8), welche eine Befestigungsvorrichtung (2) nach einem der vorhergehenden Ansprüche umfasst, dadurch gekennzeichnet, dass auf der Befestigungsposition (14) des plattenförmigen Elements (10) ein Kiel (4) befestigt ist.
  9. Anordnung (8) nach Anspruch 8, gekennzeichnet durch einen Rumpfboden (6) für ein Segelboot, wobei der Rumpfboden (6) ein Trägersystem (42) umfasst, an welchem das plattenförmige Element (10) befestigt ist.
  10. Anordnung (8) nach Anspruch 9, dadurch gekennzeichnet, dass die seitlichen Befestigungen (40) des plattenförmigen Elements (10) auf jeder Seite des Kiels (4) an einem Querträger (44) befestigt sind, welcher sich quergerichtet und zentral über dem länglichen plattenförmigen Element erstreckt, und dass die Befestigungen (20, 22) des plattenförmigen Elements (10) mit Abstand vor und hinter dem Kiel (4) an einem vorderen Querträger (46), der vor und parallel zu dem zentralen Querträger (44) angeordnet ist, bzw. an einem hinteren Querträger (48) befestigt sind, der hinter und parallel zu dem zentralen Querträger (44) angeordnet ist.
  11. Segelboot, welches eine Befestigungsvorrichtung (2) nach einem der Ansprüche 1 bis 7 oder eine Anordnung (8) nach einem der Ansprüche 8 bis 10 umfasst.
EP07701133A 2006-01-23 2007-01-22 Vorrichtung zur befestigung eines kiels und anordnung und segelboot mit der vorrichtung Not-in-force EP1976748B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0600139 2006-01-23
SE0600425A SE533899C2 (sv) 2006-01-23 2006-02-24 Anordning för infästning av en köl
PCT/SE2007/000052 WO2007084061A1 (en) 2006-01-23 2007-01-22 Apparatus for attachment of a keel, and also an arrangement and a sailing boat comprising the apparatus

Publications (3)

Publication Number Publication Date
EP1976748A1 EP1976748A1 (de) 2008-10-08
EP1976748A4 EP1976748A4 (de) 2010-06-02
EP1976748B1 true EP1976748B1 (de) 2011-01-12

Family

ID=38287911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07701133A Not-in-force EP1976748B1 (de) 2006-01-23 2007-01-22 Vorrichtung zur befestigung eines kiels und anordnung und segelboot mit der vorrichtung

Country Status (6)

Country Link
EP (1) EP1976748B1 (de)
AT (1) ATE495091T1 (de)
DE (1) DE602007011892D1 (de)
DK (1) DK1976748T3 (de)
SE (1) SE533899C2 (de)
WO (1) WO2007084061A1 (de)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572279A (en) * 1969-03-11 1971-03-23 Ernest Clyde Smoot Jr Shock-and-dig-relieving daggerboard
DE3515090A1 (de) * 1985-01-22 1986-07-24 Fritz Dipl.-Kaufm. 7750 Konstanz Marggraff Boot mit absenkbarem und aufholbarem kiel
NL1002124C2 (nl) * 1996-01-19 1997-07-22 Lumiflex Precision Engineering Kiel voor een zeilvaartuig.
DE19604966C2 (de) * 1996-02-02 1998-01-29 Marco Misbach Kiel für Segelfahrzeuge mit Dämpfungseinheit
FR2771993B1 (fr) * 1997-12-04 2000-01-14 Dufour And Sparks Sa Quille pour embarcation
NO309641B1 (no) * 1999-05-26 2001-03-05 Per Kristian Larsen Stötabsorberende kjöl
FR2817229B1 (fr) * 2000-11-28 2003-02-21 Hobie Cat Europ Base renflee d'une quille de bateau
FR2822797B1 (fr) * 2001-03-28 2003-10-03 Philippe Baron D Protection des quilles de voiliers contre les chocs
FR2834686A1 (fr) * 2002-01-15 2003-07-18 Pierre Vironneau Dispositif d'absortion de chocs pour quille de bateau
US6948444B2 (en) * 2003-05-16 2005-09-27 Stratos Boats, Inc. Hull reinforcing system

Also Published As

Publication number Publication date
DK1976748T3 (da) 2011-04-26
WO2007084061A1 (en) 2007-07-26
DE602007011892D1 (de) 2011-02-24
SE533899C2 (sv) 2011-02-22
EP1976748A1 (de) 2008-10-08
EP1976748A4 (de) 2010-06-02
SE0600425L (sv) 2007-07-24
ATE495091T1 (de) 2011-01-15

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