WO2022136566A1 - Ensemble foil et équipement pour sports nautiques - Google Patents

Ensemble foil et équipement pour sports nautiques Download PDF

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Publication number
WO2022136566A1
WO2022136566A1 PCT/EP2021/087329 EP2021087329W WO2022136566A1 WO 2022136566 A1 WO2022136566 A1 WO 2022136566A1 EP 2021087329 W EP2021087329 W EP 2021087329W WO 2022136566 A1 WO2022136566 A1 WO 2022136566A1
Authority
WO
WIPO (PCT)
Prior art keywords
mast
arrangement according
foil arrangement
fuselage
shoe
Prior art date
Application number
PCT/EP2021/087329
Other languages
German (de)
English (en)
Inventor
Ulrich Bitterolf
Original Assignee
Boards & More Gmbh
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
Priority claimed from DE102021102124.3A external-priority patent/DE102021102124A1/de
Application filed by Boards & More Gmbh filed Critical Boards & More Gmbh
Priority to EP21843996.6A priority Critical patent/EP4267453A1/fr
Priority to US18/255,578 priority patent/US20240010307A1/en
Publication of WO2022136566A1 publication Critical patent/WO2022136566A1/fr

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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 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
    • B63B1/242—Mounting, suspension of the foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
    • B63B32/66—Arrangements for fixation to the board, e.g. fin boxes or foil boxes

Definitions

  • the invention relates to a foil arrangement according to the preamble of patent claim 1 and a water sport device/watercraft designed with such a foil arrangement.
  • Such foil arrangements designed as hydrofoils are used, for example, in kitesurfing and windsurfing and allow comparatively small kites/sail areas to be driven faster than the wind even with very little wind in the wind range from 2 Bft.
  • SUP boards or boards for surfing have also been designed with foil arrangements of this type, which make it possible to move significantly faster than with conventional boards in the case of small waves or sufficient propulsion.
  • Foil arrangements of this type are usually attached to the board with their mast via a base plate or a box system, such as a tuttle box, future box or the like.
  • Document US 2015/0017850 A1 discloses a foil arrangement for a watercraft, in which the mast is inserted with a multiplicity of projections into corresponding recesses in a baseplate fastened to the watercraft.
  • the fitting elements required for this on the base plate and on the mast or on the mast foot are very complex, so that the foil arrangement can only be implemented with a great deal of technical effort.
  • WO 2011/075808 A1 describes a foil board that is provided with a removable foil arrangement, so that this board can be used both for foiling and for conventional surfing or kite surfing (without foil).
  • the mast of the foil arrangement is designed with an adapter plate which is screwed to a base plate on the board. Detaching or attaching the foil arrangement to the board is relatively complicated, since a large number of screws have to be loosened or tightened.
  • the document DE 10 2018 106 212 A1 which is also from the applicant, proposes that the connection between the board-side base plate and the mast be made by means of a quick-release mechanism, so that it can be released and fastened without a tool .
  • this solution which is very easy to use, requires that the base plate socket and the corresponding mast-side counterpart, which is inserted into the base plate socket, be manufactured with the greatest precision, being careful not to damage this fit during insertion. It is particularly important to ensure that no foreign bodies, such as grains of sand, penetrate into the fitting area.
  • the mast is usually connected to the fuselage in that an end section of the mast dips into a corresponding receptacle in the fuselage and is screwed there.
  • This screwing process requires carrying a tool, for example a screwdriver or an Allen key, so that appropriate storage space must be provided.
  • Using the tool on the beach is also problematic because care must be taken not to allow sand to enter the tool's engagement area.
  • Such a A solution with a screwed fuselage is described, for example, in DE 20 2019 103 496 U1.
  • WO 2020/021138 A1 discloses a foil arrangement in which the mast is designed with an adapter plate which is fastened to a base plate on the board side by means of two safety pins. These protrude from the base plate on both sides, so that the flow in and around this area is impeded and there is also a risk that the safety cotter pins will be accidentally released.
  • This PCT application also discloses a solution in which a fuselage is fastened to the mast of the foil arrangement without the use of tools via a latching mechanism. Such a locking connection is problematic on the one hand with regard to stability and on the other hand also with regard to the precision of the positioning of the fuselage on the mast.
  • German utility model DE 20 2020 102 788 U1 discloses a concept in which the mast of a foil arrangement can be angled into a board-side base plate. The attachment of the fuselage is not addressed in this publication.
  • the invention is based on the object of creating a foil arrangement for water sports equipment/watercraft or water sports equipment designed with such a foil arrangement, in which assembly with precise position fixing is simplified compared to the prior art.
  • the foil arrangement according to the invention is designed in particular for use on a surfboard, SUP board, windsurf board or kiteboard and has a Water sports equipment attachable mast whose end portion remote from the water sports equipment is detachably connected to a fuselage.
  • This is designed in a manner known per se to carry wings (winglets).
  • winglets wings
  • the connection between the mast and the fuselage is designed in such a way that the latter can be fixed to the mast without tools.
  • the mast has a shoe which can be inserted in a force-fitting and/or form-fitting manner into a receptacle on the fuse position side and can be fixed in position there by means of at least one fastening means.
  • the shoe and the receptacle are tapered in the direction of insertion, so that an accurately fitting relative positioning of the two components is ensured.
  • Tool-free assembly is particularly easy if the fastener has a handle that, when the shoe is connected to the mast, dips into a pocket in the fuselage in a fixing position, so that there is practically no protrusion and the handle is hydrodynamically optimally integrated with minimal flow resistance.
  • the fastening means is a tensioning element, preferably a tensioning screw, a tensioning bolt or a tensioning lever. Functional reliability is further improved if the fastening means/tensioning element is secured in the fixing position by means of a fuse.
  • This securing can be, for example, a latch, with latching projections on the one hand and corresponding latching recesses on the other hand being formed, which come into active engagement with one another in the fixing position.
  • the securing device can be a cover that is preferably held pivotably on the fuselage and covers the recess and the tensioning element in the fixing position, so that accidental release is not possible.
  • the fuselage can also be fastened to the mast by means of two fastening means which are spaced apart from one another and both have a similar structure.
  • the shoe is inserted into the receptacle by being angled.
  • a pivot bearing is provided in the receptacle or on the shoe, to which a counterpart on the shoe or on the receptacle is assigned, the receptacle and the pivot bearing being designed in such a way that the pivot bearing and the counterpart are in the fixing position are positively and/or non-positively in operative engagement such that the fuselage is reliably fixed to the mast and withstands all acting forces.
  • the pivot bearing is formed by a pin inserted into the recess, which dips into a recess of the counterpart in the fixing position and is engaged behind by the circumferential wall of the counterpart.
  • the pivot bearing is designed as a pivoting pocket designed according to the pivoting radius, into which the complementarily designed counterpart dips in the fixing position.
  • connection between the fuselage and the mast is particularly stable if the fastening means is formed at a distance from the pivot bearing.
  • the fastening means is a clamping screw, this is preferably designed with a self-locking thread, for example a fine thread.
  • the handle is designed as a rotary lever whose axis of rotation is coaxial with an axis of the fastening means.
  • the rotary lever can be a pivoted lever, for example, which is pivoted into the pocket of the fuselage in the fixing position.
  • the gap dimensions can be further minimized if the outer circumference of the rotary lever is rounded in accordance with the radius of the peripheral wall of the pocket.
  • a tool attachment can be designed on the rotary lever so that an additional fixing force can be generated when using a tool Direction of the fixing position can be transferred to the fastener.
  • the mast and shoe are designed in one piece. Such a solution can be produced from carbon fiber material or the like, for example.
  • the mast is attached to the water sports equipment, for example the kiteboard/windsurf board, via a mast plate.
  • the mast On the fuselage side, the mast is either provided with a mast foot which is connected to the fuselage, or the mast is inserted directly into a pocket in the fuselage.
  • the mast has a hydrodynamically optimized "tear drop" profile, with a somewhat rounded leading edge and a relatively sharply tapered trailing edge.
  • the receiving pocket must be designed according to this complex profile of the mast. Since these receiving pockets are usually formed in an aluminum part, they can only be produced by milling, although this milling process is very expensive due to the very small radii or tapered surface sections in the area of the trailing edge and leading edge. For this reason, before the mast is inserted, the end sections are usually milled off in an extra operation, so that the receiving pocket is designed with a geometry that can be produced comparatively easily. Such a procedure is very expensive.
  • This adapter can be made of plastic, for example, so that the manufacturing effort is minimal.
  • the intermediate piece is only formed in the area of the inflow and/or outflow edge, the areas of the mast lying in between lie precisely in the receiving pocket.
  • a base wall can be formed, which is used as a separate component or is designed in one piece with the intermediate piece. This bottom wall and the intermediate piece then form an approximately cap-shaped structure.
  • the invention also includes water sports equipment/watercraft that is designed with a foil arrangement according to the preceding statements, with the fuselage carrying wings/winglets.
  • FIG. 1 shows a greatly simplified view of water sports equipment designed with a foil arrangement according to the invention
  • FIG. 2 shows a detailed illustration of the foil arrangement according to FIG. 1 in an assembly position in which a fuse layer has not yet been attached to a mast of the foil arrangement;
  • FIG. 3 shows an illustration corresponding to FIG. 2, the mast being pivoted into the fuselage with a shoe
  • FIG. 4 shows a representation corresponding to FIGS. 2 and 3, the mast being connected to the fuselage;
  • FIG. 5 shows detailed representations of a shoe of the mast and a receptacle of the fuselage accommodating the shoe
  • FIG. 6 shows the arrangement according to FIG. 5, with the shoe being inserted into the receptacle
  • FIG. 7 shows a bottom view of the arrangement according to FIG. 6;
  • FIG. 8 shows a further exemplary embodiment of a foil arrangement
  • FIG. 9 shows a third exemplary embodiment of a foil arrangement according to the invention with a shoe partially angled into the fuselage
  • FIG. 10 shows the foil arrangement according to FIG. 9, with the shoe being connected to the fuselage in its fixing position
  • FIG. 11 shows a schematic representation of an end section of a mast of a foil arrangement on the fuselage side, which end section is inserted into a shoe
  • FIG. 12 shows a detailed representation of an outflow-side region of the arrangement according to FIG. 11 and
  • FIG. 13 shows an intermediate piece of the foil arrangement according to FIGS. 11 and 12.
  • FIG. 1 shows a side view of a board 1 intended for surfing, kiting, surfing, stand-up paddling (“SLIPing”) or windsurfing, to which a foil arrangement 2 according to the invention is attached.
  • This has a mast 4 which is detachably attached to the board 1 via a fixing device 6 .
  • a fixing device is shown in the post-published patent application PCT/EP2020/077803.
  • a fuselage 8 is fastened to the end section of the mast 4 remote from the board 1 and carries a front wing 10 at the front and a rear wing 12 at the rear. Both wings 10, 12 are each provided with winglets 14, 16, with the winglets 14 on the front wing 10 extending downwards in this exemplary embodiment and the winglets 16 on the rear wing 12 extending upwards—of course, other designs are also possible.
  • the mast 4 is made from an anodized aluminum alloy or the like.
  • the fuselage 8 and the two wings 10, 12 can also be made of a carbon fiber reinforced plastic; Of course, these components can also be made entirely or in sections from a metallic material.
  • the fuselage 8 is detachably connected to the mast 4 via a connection 18 (quick mount), with assembly/disassembly being able to take place without tools.
  • FIG. 8 A part of the fuse layer 8 and a part of the mast 4 are shown in FIG. As stated above, is on fastened to the front end section of the fuselage 8 of the front wing 10 in the direction of flow, the view according to FIG.
  • a shoe 20 is fastened to the mast 4 , which protrudes laterally beyond the mast profile and is inserted into a receptacle 22 of the fuselage 8 .
  • the shoe 20 in the side view illustrated in FIG. 2 has a recess 24 formed on an inflow-side end section 23, which widens to the left (in the inflow direction) in the illustration according to FIG.
  • a fixing lug 26 is provided on the outflow side, in which a threaded receptacle 28 is integrated. Specifically, in the illustrated embodiment, this is formed by a nut 30 which is inserted into a through hole 32 of the fixing lug 26 .
  • the fixing lug 26 has a lower height h than a base 34, which is designed with the height h.
  • the transition between the fixing lug 26 and the base 34 is concavely rounded.
  • the receptacle 22 has a corresponding structure so that the shoe 20 can be inserted flush into the receptacle 22 .
  • the receptacle 22 has a chamber 36 which is dimensionally matched to the base 34 .
  • the chamber 36 transitions to the right (view according to FIG. 2) into a fixing space 38 which is designed in accordance with the contour of the fixing lug 26, the transition between the fixing space 38 and the chamber 36 also being rounded.
  • the resulting floor contour is designed in such a way that the shoe 20 is flatly supported in the fixing position explained below with reference to FIG.
  • a pin 42 penetrates the chamber 36 perpendicular to the plane of the drawing, the diameter of which is selected so that it can enter the recess 24, with the relative positioning taking place in such a way that in the fixing position the shoe 20 its end face 44 rests against the side wall 40.
  • the receptacle 22 is formed on a central part 46 of the fuselage 8 , a clamping screw 48 being provided in the area of the central piece 46 in which the fixing space 38 of the receptacle 22 is formed, the threaded bolt 50 of which dips into the fixing space 38 .
  • the threaded bolt 50 is designed with a handle 52 designed as a rotary lever, which forms a lever arm so that the clamping screw 48 can be tightened quite easily by hand.
  • the clamping screw 48 is captively accommodated in the center piece 46 . In the illustrated embodiment, this is done via a lock washer 54, which is arranged in a through hole 56 of the center piece 46 and through which the threaded bolt 50 passes.
  • the through bore 56 is widened downwards to a pocket 58 in which the handle 52 is accommodated.
  • This pocket 58 is designed in such a way that the handle 52 can be rotated about the axis of the threaded bolt 50 .
  • the clamping screw 48 is held in the through hole 56 in such a way that it maintains its axial position in which the threaded bolt 50 does not or only slightly protrudes out of the chamber 36 upwards towards the mast 4 .
  • clamping screw 48 could also be guided in the through hole 56 so that it can move in the axial direction, so that it dips into the pocket 58 as the screwing increases, for example.
  • the mast 4 is first angled at an angle a to the longitudinal extent of the fuselage 8, so that the shoe 20 with the recess 24 can be placed on the pin 42 and the rear Fixing lug 26 still protrudes upwards from the receptacle 22.
  • the mast 4 is pivoted in the direction of the arrow, the pivot bearing being formed by the engagement of the recess 24 with the pin 42 and the fixing lug 26 pivoting into the fixing space 38 until the threaded receptacle 28 is aligned in relation to the threaded bolt 50.
  • the threaded bolt 50 is then screwed into the nut 30, so that the mast 4, through the operative engagement with the threaded bolt 50 in the receptacle 22 is angled in until the shoe 20 comes to rest flush in the receptacle 22.
  • This fixing position is shown in FIG.
  • the angle a is then about 90°.
  • the handle 52 of the clamping screw 48 closes flush with the pocket 58 of the fuselage 8 during this position fixing or at least in the fixing position, so that there is no overhang.
  • the nut 30 is then in threaded engagement with the threaded bolt 50, with the recess 24 enclosing the pin 42 in a form-fitting manner, so that the fuselage 8 is fixed to the mast 4 without play.
  • the shoe 20 is shown in an individual representation. Accordingly, it has a mast pocket 60 designed to match the profile of the mast 4, into which the end section of the mast 4 on the fuselage side is inserted and fixed by means of two screws which pass through the screw holes 62 shown.
  • the cross section of the boot 20 is designed so that the mast pocket 60 can be formed with sufficient cross sectional and wall area.
  • the shoe 20 tapers in the area of the inflow-side end section 23, on which the recess 24 (not visible in FIG. 5a) is formed according to the above statements.
  • the fixing lug 26 with the nut 30 which is fixed in the through hole 56 is formed on the end section of the shoe 20 on the right in FIG. 5a.
  • FIG. 5b shows a plan view of the receptacle 22 which is formed in the central part 46 of the fuselage 8.
  • the profile of the receptacle 22 is designed in accordance with the shoe profile, with the pin 42 being arranged in the end section 23 of the chamber 36 that tapers in the inflow direction, which pin 42 passes through the chamber 36 parallel to the side wall 40 in the transverse direction (transverse to the mast axis).
  • the end section of the receptacle 22 remote from the pin 42 is designed as a fixing space 38 which is stepped back in relation to the chamber 36 via the rounding.
  • the threaded bolt 50 protrudes into this fixing space 38 and in turn passes through the through hole 56, the handle 52 not being visible in FIG. 5b.
  • the shoe 20 with its recess 24 on the pin 42 recognized and then angled into the receptacle 22 and fixed in position by tightening the clamping screw 48.
  • the handle 52 likewise dips flush into the pocket 58 of the fuselage 8, at least in this fixing position.
  • Circumferential walls 66a, 66b of pocket 58 are rounded with a corresponding radius R, so that the gap is minimal.
  • the pocket 58 is open to the side (roughly in the vertical direction according to FIG. 7), so that the handle 52 can be rotated freely.
  • the width b of the central part 46 and thus the width of the pocket 58 is significantly less than its longitudinal extent L, so that the handle 52 protrudes laterally from the pocket 58 in sections when rotated and can be gripped better.
  • latching means can be formed in the area of the end faces 64a, 64b and the peripheral walls 66a, 66b, which form a form fit that can be overcome with a certain amount of force.
  • projections can be formed on the end faces 64a, 64b, which engage with a precise fit in corresponding recesses on the peripheral walls 66a, 66b.
  • a kinematic reversal can also be implemented.
  • Reference number 68 in FIG. 7 designates a tool attachment, for example a hexagon socket, on which a tool for tightening the threaded bolt 50 can be attached. Accordingly, the tool approach 68 rotatably connected to the threaded bolt 50 or integrally formed therewith.
  • FIG. 8 shows a variant of the exemplary embodiment described above, in which the shoe 20 is formed in one piece with the mast 4.
  • the shoe 20 can also be connected to the mast 4 in the manner described above.
  • the shoe 20 is inserted with a precise fit into the receptacle 22 of the fuselage 8 and, on its inflow-side end section 23, which is arranged on the left in Figure 8, has a circularly curved counter-piece 70, which can be pivoted into a correspondingly shaped pivoting pocket 72 in the direction of the arrow , wherein the radius of curvature of the counterpart and the pivoting pocket corresponds to the pivoting angle by which the mast 4 is pivoted when it is attached.
  • the shoe 20 sits precisely in the receptacle 22 so that in a further operation the clamping screw 48 can be tightened in order to bring it into threaded engagement with the nut 30 on the shoe 20 .
  • the pivoting takes place from the inflow side of the mast 4, so that the hydrodynamic forces acting during travel act on the mast 4 in this pivoting-in direction, so that the shoe 20, in addition to the clamping force of the clamping screw 48, is also hydrodynamically in Is applied towards its fixing position.
  • FIG. 9 shows a further variant of a foil arrangement 2 according to the invention, the arrangement being rotated by 180° compared to the variants described above, so that the flow occurs from the right.
  • a pin 42 is held in the receptacle 22 of the fuselage 8, to which the shoe 20 is attached with its recess 24 during assembly.
  • the fixing lug 26 is formed, which dips into the fixing space 38 of the receptacle in the fixing position.
  • the threaded receptacle 28 indicated by dot-dash lines is then in turn formed, which can be brought into threaded engagement with the threaded bolt 50 on the fuse position side.
  • the turning of the threaded bolt 50 for fixing or loosening the shoe 20 does not take place by means of a rotary lever rigidly connected to the threaded bolt 50, but by means of a pivoting lever 74, which is mounted in the pocket 58 so that it can pivot about a pivot axis 76.
  • the pivoted lever 74 is pivoted out of the pocket 58 in the manner shown in FIG. The width of the pocket 58 allows for this pivoting lever 74 rotation.
  • the lever arm for applying a torque can be changed.
  • the pivoted lever 74 is pivoted again in such a way that it dips completely into the pocket 58 .
  • FIG. 10 the fixing position shown in FIG. 10 can be maintained, for example, by a latch or the like.
  • a hydrodynamically improved system is shown in FIGS.
  • a cover 78 is held on the fuselage 8 at a distance from the pivoted lever 74 and allows the pivoted lever 74 to rotate in its open position.
  • the cover 78 can be pivoted about a cover axis 80, so that after the pivot lever 74 has been moved into its fixing position within the pocket 58, the cover 78, as shown in Figure 10, can be pivoted in the direction of the pocket 58, with a fitting projection 82 fitting exactly into a Passing recess 84 of the fuselage 8 is immersed.
  • the fitting projection 82 has a fixing recess 86 into which a fitting bolt 88 guided on the fuselage 8 can be inserted in order to secure the cover 78 in the position shown in FIG. In this, an accidental displacement of the pivoting lever 74 from its fixing position is reliably prevented.
  • the cover 78 is inserted into the fuselage 8 with a precise fit, so that the hydrodynamic resistance is minimal.
  • the fixing bolt 88 can be provided with an anti-loss device so that it does not get lost even in the loosened state.
  • the fixing bolt 88 it is also possible to guide the fixing bolt in the fuselage 8 in a spring-loaded manner, whereby it is preloaded in its fixing direction.
  • a further possibility consists in designing the fixing bolt 88 as a threaded bolt, so that it can be adjusted into the fixing position by twisting.
  • a clamping device that is not designed with a thread could also be actuated via the handle 52 or the pivoted lever 74 , which holds the shoe 20 in its clamping position/fixing position in the receptacle 22 with a non-positive fit.
  • a slide or another element guided along a connecting link guide can also be adjusted between a release position and the fixing position. Accordingly, the invention is not limited to the use of a clamping screw.
  • both a leading edge 94 and a trailing edge 96 of the mast 4 are designed continuously in accordance with the hydrodynamically optimal droplet profile.
  • the end section of the mast 4 on the fuselage side is inserted into a shoe 20, which in turn is then connected to the fuselage 8 in the manner described above.
  • the pocket 58 of the shoe 20 is designed with a profile that is easy to produce, similar to the embodiment according to FIG and the outflow edge 96 is made much wider than the mast profile.
  • This distance between the oversized pocket 58 and the mast profile is filled in the illustrated embodiment by means of an inflow-side intermediate piece 98 and an outflow-side intermediate piece 100 so that the mast is fixed in position in the pocket 58 with a precise fit.
  • the areas of the mast lying between the intermediate pieces 98, 100 lie flat against the corresponding peripheral wall of the pocket 58.
  • FIG. 12 shows a detailed illustration of the area in which the intermediate piece 100 on the outflow side is arranged. It can be clearly seen in this illustration that the trailing edge 96 tapers to a point in accordance with the hydrodynamically optimized profile.
  • the pocket 58 of the shoe 20 is oversized in this area, with the resulting space being filled by the correspondingly profiled intermediate piece 100 .
  • This is V-shaped in the broadest sense in profile (see view according to Figure 13) and has a rounded base 102 which encompasses the trailing edge 96 and which is followed by two intermediate piece legs 104, 106 which taper away from the base 102. so that the gap between the mast 4 and the pocket wall also correspondingly narrows away from the trailing edge 96 .
  • a bottom wall 108 is formed in the area of the base 102 of the intermediate piece 100, which is either integrally formed on the intermediate piece 100 or is attached as a separate component. This bottom wall secures the intermediate piece on the mast 96 so that the intermediate piece 100 is prevented from slipping out/loosening.
  • Figure 13 shows an individual representation of the intermediate piece 100 with the rounded base 102 and the relatively pointed intermediate piece legs 104, 106 extending out of this.
  • the radius r in the area of the base 102 between the two legs 104, 106 corresponds to the shape of the trailing edge 96 trained.
  • the outer radius R of the base 102 is selected in such a way that the correspondingly designed pocket 58 can be milled in a simple manner.
  • the bottom wall 108 described above extends downwards (view according to FIG. 13) between the legs 104 , 106 of the intermediate piece and prevents the intermediate piece 100 from becoming detached from the mast 4 .
  • FIG. 13 also clearly shows the tapering ends 110, 112 of the two intermediate piece legs 104, 106. Accordingly, the space between the inner peripheral wall of the pocket 20 and the outer peripheral wall of the mast profile closes away from the base 102 so that the mast 4 is then surrounded by the peripheral walls of the pocket 20 with a precise fit.
  • the intermediate piece 98 is designed accordingly, with the radius r being slightly larger on the inflow side than on the outflow side.
  • the concept described above can be implemented in a corresponding manner in the area of the fixing device 6, which is designed as a mast plate and which is also designed with a receiving pocket for the mast end section, the geometry of which is designed in accordance with the pocket 58 on the fuselage side, with the space/spaces between the leading edge and/or the trailing edge and the pocket are in turn filled with intermediate pieces.
  • these intermediate pieces 104, 106 are produced as plastic molded parts, for example by injection molding or 3D printing or the like.
  • a foil arrangement in which a fuselage is connected to a mast without tools. Also disclosed is a foil arrangement in which end sections of the mast are inserted into receiving pockets of a mast plate, a shoe or a fuselage, with intermediate pieces being able to be provided on the inflow and/or outflow side.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

L'invention concerne un ensemble foil, dans lequel le fuselage est relié sans outil au mât. L'invention concerne en outre un ensemble foil dans lequel des parties d'extrémité du mât sont insérées dans des cavités de réception ménagées dans une plaque de mât, un sabot ou le fuselage, des pièces intermédiaires pouvant être prévues côté bord d'attaque et/ou côté bord de fuite.
PCT/EP2021/087329 2020-12-22 2021-12-22 Ensemble foil et équipement pour sports nautiques WO2022136566A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21843996.6A EP4267453A1 (fr) 2020-12-22 2021-12-22 Ensemble foil et équipement pour sports nautiques
US18/255,578 US20240010307A1 (en) 2020-12-22 2021-12-22 Foil Arrangement and Water Sports Apparatus

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102020134666.2 2020-12-22
DE102020134666 2020-12-22
DE102021102124.3 2021-01-29
DE102021102124.3A DE102021102124A1 (de) 2020-12-22 2021-01-29 Foilanordnung und Wassersportgerät

Publications (1)

Publication Number Publication Date
WO2022136566A1 true WO2022136566A1 (fr) 2022-06-30

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Application Number Title Priority Date Filing Date
PCT/EP2021/087329 WO2022136566A1 (fr) 2020-12-22 2021-12-22 Ensemble foil et équipement pour sports nautiques

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US (1) US20240010307A1 (fr)
EP (1) EP4267453A1 (fr)
WO (1) WO2022136566A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210276669A1 (en) * 2020-03-06 2021-09-09 Bi Thermal Aspen Earth, L.L.C. Composite masts and mast-fuselage connection assemblies for hydrofoil sports boards
WO2024152084A1 (fr) * 2023-01-17 2024-07-25 Fliteboard Pty Ltd Mât d'hydroptère, kit et embarcation

Citations (10)

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