WO2023149280A1 - Ailette - Google Patents

Ailette Download PDF

Info

Publication number
WO2023149280A1
WO2023149280A1 PCT/JP2023/002078 JP2023002078W WO2023149280A1 WO 2023149280 A1 WO2023149280 A1 WO 2023149280A1 JP 2023002078 W JP2023002078 W JP 2023002078W WO 2023149280 A1 WO2023149280 A1 WO 2023149280A1
Authority
WO
WIPO (PCT)
Prior art keywords
fin
core
core material
fins
base
Prior art date
Application number
PCT/JP2023/002078
Other languages
English (en)
Japanese (ja)
Inventor
勝慶 熊野
隆仁 小池
Original Assignee
勝慶 熊野
有限会社Ｇファクトリー
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 勝慶 熊野, 有限会社Ｇファクトリー filed Critical 勝慶 熊野
Publication of WO2023149280A1 publication Critical patent/WO2023149280A1/fr

Links

Images

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 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
    • B63B32/62—Board appendages, e.g. fins, hydrofoils or centre boards characterised by the material, e.g. laminated materials; characterised by their manufacturing process

Definitions

  • the present invention relates to fins attached to surfboards and the like.
  • a fin that acts as a rudder is attached to the back of the surfboard, etc., to stabilize the straightness and steering of the surfboard.
  • the overall shape of the fins and the ease of bending of the fins affect the straightness and steering performance of the surfboard.
  • the bendability of the fins depends greatly on the hardness of the material that makes up the fins. Fins that are hard and hard to bend make it difficult to hold water and improve straightness, while soft and bendable fins hold water. It is known that steerability is improved by making it easier to move.
  • the fin of Patent Document 1 is made by laminating a thick core mat or the like having substantially the same shape as the fin between a pair of molds corresponding to the shape of the fin, applying polyester resin, and further glass fiber on the outside. It is obtained by laminating woven glass cloth or the like, applying a polyester resin, and curing it while applying pressure.
  • a fin such as that disclosed in Patent Document 1 has a thick core mat or the like laminated inside the fin, so that the manufacturing process can be simplified as compared with a conventional fin manufactured by laminating 20 to 30 layers of glass cloth. Instead, the weight of the fin can be reduced while maintaining substantially the same thickness as the conventional fin.
  • a core mat or the like having substantially the same shape as the fin extends to the tip of the fin called a tip, and these are covered with glass cloth from the outside. Because the fins are hardened with polyester resin, they are excellent in straight running, but the fins as a whole are stiff and difficult to bend, making it difficult to hold water, resulting in poor steering performance.
  • the present invention has been made with a focus on such problems, and an object thereof is to provide a fin that is excellent not only in the straightness of the board but also in the steering performance.
  • the fin of the present invention is A fin attached to the back side of the board,
  • the fin is characterized in that a core material having high strength is arranged biased toward the board.
  • the board side of the fin is less likely to bend due to fluid resistance when changing the direction of travel of the board, and the tip of the fin is easier to bend, so in addition to the straightness of the board, it has excellent steering performance.
  • the core material is characterized in that it is arranged along the outline of the fin. According to this feature, it is possible to create an intensity distribution that does not impede the original function of the fin.
  • the core material is characterized in that it extends to the legs of the fins attached to the back side of the board. According to this feature, the legs can be reinforced by the core material.
  • the tip of the core material is positioned closer to the board than the vertex of the rear edge portion of the fin. According to this feature, the tip side of the fin can be easily bent, and the steering performance of the board is improved.
  • the rear end of the core member is located forward of the base point of the rear edge portion of the fin. According to this feature, the rear end side of the fin can be easily bent, and the steering performance of the board is improved.
  • the core material is characterized by being a wire material. According to this feature, the weight of the fin can be reduced.
  • the core material is characterized in that it is adhered to the base material. According to this feature, the strength of the base material and the core material that constitute the fin can be enhanced.
  • FIG. 4 is a side view of a fin in Example 1.
  • FIG. FIG. 4 is a cross-sectional view taken along the line AA of FIG. 3; (a) is a front view showing bending characteristics of a fin in Example 1, and (b) is a front view showing bending characteristics of a conventional fin.
  • FIG. 11 is a side view of a fin in Example 2; FIG. 7 is a cross-sectional view taken along the line BB of FIG. 6; FIG. 11 is a side view of a fin in Example 3; FIG. 11 is a side view of a fin in Example 4;
  • FIG. 10 is a diagram showing a method of manufacturing a fin in Example 5;
  • FIG. 1 is the front side (front side) of the board
  • the right side of FIG. 1 showing the back side of the board is the left side of the board
  • the left side of FIG. 1 is the right side of the board.
  • the front end side of the board is sometimes called the nose side
  • the rear end side is sometimes called the tail side.
  • the fins of the present invention are attached to the back side of the board.
  • the fins attached to the surfboard 2 as a board will be described, but the fins may be attached to other boards such as a bodyboard and a wakeboard.
  • center fin 1C positioned in the center in the left-right direction and positioned so as to sandwich the center fin 1C from left to right.
  • a pair of side fins 1L and 1R are provided.
  • the center fin 1C is arranged in the left-right center of the surfboard 2 so as to be substantially orthogonal to the back surface 2a.
  • the side fins 1L and 1R are arranged to be shifted forward from the center fin 1C. Specifically, the side fins 1L and 1R are inclined in the left-right direction away from each other toward the lower end, and are inclined in the left-right direction away from each other from the front end to the rear end.
  • the surfboard 2 of the present embodiment has been described as having three fins 1L, 1C, and 1R, the present invention is not limited to this, and the number and arrangement of fins may be freely changed.
  • the side fins 1L and 1R are formed in a so-called flat foil in which the surface facing inward in the left-right direction is a flat surface and the surface facing outward in the left-right direction is a convex curved surface (see FIG. 2). , and the center fin 1C, the description thereof will be omitted.
  • the center fin 1C (hereinafter also referred to as fin) of the first embodiment includes a base material 10 forming the outer shape of the fin and a base material 10 inside the base material 10 on the side of the surfboard 2, that is, above. and a core material 11 arranged to be biased to the side.
  • the fins in this embodiment are thick on the front side and on the upper side, and the thickness gradually decreases toward the rear side and the lower side, so that the cross-sectional shape is streamlined (see FIG. 4). .
  • the base material 10 is mainly made of polycarbonate, and has elasticity by adding an appropriate amount of glass powder. Moreover, the base material 10 is translucent and lightweight by using polycarbonate as a main material.
  • the base material 10 of the present embodiment has an overall shape that gradually extends rearward from the base end side of the upper part toward the tip end side of the lower part.
  • the rear edge portion 10a forming the rear outer edge of the base material 10 has an external shape extending rearward while gradually curving from the base point P1 of the upper end toward the apex P2 (the rearmost point) of the tip.
  • the base material has the elasticity required for the fins
  • other synthetic resins such as polyester resins and silicon resins, rubber, etc. may be used as main materials other than polycarbonate, and fillers and various additives may be added. may be added.
  • the base member 10 is integrally formed with two front and rear leg portions 12, 12 protruding upward from a substantially horizontally extending base 10b constituting the upper end portion of the fin.
  • the fins of this embodiment are attached to the back surface 2a of the surfboard 2 by inserting the legs 12, 12 into a fin box 3 provided on the back surface 2a of the surfboard 2 and fixing them with bolts 4 (see FIG. 1). ).
  • the shape of the leg portion is not limited to this embodiment, and for example, one leg portion extending in the front-rear direction of the base may be integrally formed.
  • the core material 11 is a single wire rod made of stainless steel and having a circular cross section (see FIG. 4). It is bent and formed. Note that the core material 11 is a wire rod having the same diameter over the entire length.
  • the core material 11 is a different material from the base material 10 and has higher strength than the base material 10 .
  • the core material 11 is a member having a Young's modulus larger than that of the base material 10 , in other words, the core material 11 is a member that is harder than the base material 10 and bends less easily.
  • the core material may be made of other metal such as aluminum or titanium, synthetic resin, wood, bamboo, etc., other than stainless steel, as long as it has a higher strength than the base material.
  • the core material may be made of the same material as the base material. For example, by adding a filler such as glass fiber or carbon fiber to the same material as the base material, the strength is increased compared to the base material. There may be.
  • the wire rod used as the core material is not limited to one having a circular cross-sectional shape.
  • the cross-sectional shape of the wire used as the fin may be a flat plate shape that is short in the thickness direction of the fin.
  • the cross-sectional shape, cross-sectional area, and the like of the wire rod used as the core material may be partially changed according to the desired bending characteristics of the fin. For example, as described above, by adopting a flat plate-shaped cross-sectional leaf spring material that is short in the thickness direction of the fin as the core material, the elastic restoring force of the fin is improved and the bending characteristics of the fin are improved. can be greatly increased.
  • the wire rod used as the core material may have a hollow structure.
  • the core material 11 is arranged inside the base material 10 along the outer shape of the fins. Specifically, the core member 11 is bent along the outer shape of the fin, and the rear end 11a is located forward of the base point P1 of the rear edge portion 10a of the fin. That is, the core member 11 is bent so as to be positioned forward of the imaginary line ⁇ passing through the base point P1 and extending orthogonally to the base 10b of the fin.
  • the rear end 11a of the core material 11 is a portion located at the rearmost end in the entire core material 11. As shown in FIG.
  • the tip 11b (lower end) of the core material 11 is located above the vertex P2 of the rear edge portion 10a of the fin. That is, the core member 11 is bent so that its tip 11b is positioned above the imaginary line ⁇ passing through the vertex P2 and extending parallel to the base 10b of the fin. Note that the tip 11b of the core material 11 is a portion located at the forefront (lowest end) in the entire core material 11 .
  • the core member 11 has both upper ends 11c and 11d extending to the interior of the two front and rear legs 12 and 12.
  • the upper end portion 11 c on the front side has its end surface exposed to the upper surface 12 a of the leg portion 12 .
  • the exposed portion of the core material 11 may be covered with the material of the base material 10, a caulking material, or the like.
  • the core material 11 is arranged substantially in the center of the fin in the thickness direction (horizontal direction). Further, the base material 10 is welded to the core material 11 . That is, the core material 11 is embedded in a state in which its outer surface is integrally adhered to the base material 10 .
  • the center fin 1C is a base that is heated and melted in the mold while the core material 11 is previously fixed and arranged substantially in the center in the thickness direction (horizontal direction) of the mold corresponding to the shape of the fin. It is manufactured by so-called insert molding in which the material of the material 10 is poured, cooled and solidified. Thereby, the base material 10 is welded to the core material 11 .
  • the core material 11 having a high strength is arranged in the fin so as to be biased toward the surfboard 2 side (upper side).
  • the bending characteristics of the fins of this embodiment are similar to the bending characteristics of the fins composed only of the base material in this embodiment (see FIG. 5(b)).
  • the upper side of the fin is less likely to bend, and the tip portion of the fin called the tip is more likely to bend.
  • the fins of the present embodiment can easily accelerate the surfboard 2 because the upper side of the fins is less likely to bend due to fluid resistance when the direction of travel of the surfboard 2 is changed.
  • the tip part of the fin can easily return from a bent state to a straight state, and the fin can easily release the water. .
  • the thickness of the fin can be suppressed.
  • the core material 11 is arranged along the outer shape of the fin, it is possible to create a strength distribution that does not hinder the original function of the fin.
  • the leg parts 12, 12 can be reinforced by the core material 11.
  • the rear end 11a of the core member 11 is located forward of the base point P1 of the rear edge portion 10a of the fin, the rear end side of the fin can be easily bent, and the steerability of the surfboard 2 is improved.
  • the tip 11b of the core member 11 is located above the vertex P2 of the rear edge portion 10a of the fin, the tip side of the fin tends to bend and the steerability of the surfboard 2 is improved.
  • the fin can be lightened while exhibiting high strength.
  • the core material 11 is adhered by welding the base material 10 to the outer surface thereof, the strength of the base material 10 and the core material 11 constituting the fin can be enhanced. Further, since the core material 11 is less likely to come into direct contact with water, corrosion of the core material 11 can be prevented. In addition, since no gap is formed between the core material 11 and the base material 10, it is possible to suppress the ingress of water into the fins or an increase in the weight of the fins due to the absorption of water by the base material 10 and the core material 11.
  • the substrate preferably has translucency.
  • the fins of the first embodiment are manufactured by insert molding, the manufacturing process can be simplified.
  • the bending characteristics of the fins in Example 1 can be adjusted by changing the bent shape of the wire material that constitutes the core material.
  • the rear end of the core material in order to exhibit the bending characteristics of the fin that can achieve both the straightness and steering performance of the surfboard 2 as described above, the rear end of the core material must be located forward of the base point P1 of the rear edge portion 10a of the fin, and It is preferable that the tip (lower end) of the core material is bent so as to be positioned above the vertex P2 of the rear edge portion 10a of the fin.
  • the fin increases the elasticity of the core material on the base end side of the fin and increases the elasticity of the fin on the tip side of the fin.
  • the base material is not limited to being composed of a single layer, and may be composed of, for example, a plurality of laminated layers of different materials.
  • both upper ends of the core material do not have to extend into the inside of the legs 12 , 12 .
  • the upper end portion of the core member extends to the vicinity of the base 10b from the viewpoint of exhibiting the bending characteristics of the fins that can achieve both the strength of the fins and the straightness and steering performance.
  • the core material may be composed of a plurality of wire rods divided in the extending direction thereof, or may be composed of a plurality of wire rods arranged side by side in the width direction.
  • FIG. 1L the side fins 1L formed on the flat foil will be described as an example, and the description of the configuration that is the same as that of the above-described embodiment will be omitted.
  • the side fins 1L of the second embodiment are composed of a base material 10 forming the outer shape of the fin, a surfboard 2 side inside the base material 10, That is, it is composed of core members 211A and 211B that are arranged biased toward the upper side.
  • the core members 211A and 211B are two wire rods made of stainless steel and having a circular cross section (see FIG. 7).
  • the core members 211A and 211B are wire rods having the same diameter, and the core member 211A arranged on the front side is longer than the core member 211B arranged on the rear side.
  • the core members 211A and 211B may be composed of wire rods that differ not only in length but also in thickness, material, and the like.
  • the elastic restoring force of the fin is improved and the bending characteristics of the fin are improved. can be greatly increased.
  • the core members 211A and 211B are arranged inside the base material 10 along the outer shape of the fins. Specifically, the core material 211A is curved along the shape of the fin on the front side, and the core material 211B is curved along the shape of the fin on the rear side.
  • the rear end 211Ba of the core member 211B extending to the rear side is located forward of the base point P1 of the rear edge portion 10a of the fin. That is, the core members 211A and 211B extend to a position on the front side of the imaginary line ⁇ passing through the base point P1 and extending orthogonally to the base 10b of the fin. Note that the rear end 211Ba of the core material 211B is a portion located at the rear end in the entire core material 211B.
  • the tip 211Ab (lower end) of the core member 211A extending to the tip side (lower side) is located above the vertex P2 of the rear edge portion 10a of the fin. That is, the core members 211A and 211B extend to a position above the imaginary line ⁇ passing through the vertex P2 and extending parallel to the base 10b of the fin. Note that the tip 211Ab of the core material 211A is a portion located at the forefront (lowest end) in the entire core material 211A.
  • the core members 211A and 211B extend downward so as to gradually approach each other.
  • the core members 211A and 211B are not limited to having the same diameter over the entire length.
  • the leading end 211Ab of the core member 211A or the rear end 211Ba of the core member 211B may be formed with a large diameter. or may be tapered.
  • the upper ends 211Ac and 211Bc of the core members 211A and 211B extend into the two front and rear legs 12 and 12, respectively. Ends 211Ac and 211Bc of the core members 211A and 211B are exposed to the upper surface 12a of the leg 12 at their end surfaces.
  • the exposed portions of the core materials 211A and 211B may be covered with the material of the base material 10, caulking material, or the like.
  • the core members 211A and 211B are arranged substantially in the center of the fin in the thickness direction (horizontal direction). Further, the outer surfaces of the core members 211A and 211B are adhered to the base material 10 with an adhesive 210. As shown in FIG. That is, the core members 211A and 211B are integrally formed with the substrate 10 with the adhesive 210 interposed therebetween. In FIG. 7, for convenience of explanation, only the adhesion state of the core material 211A to the base material 10 by the adhesive 210 is illustrated in an enlarged part, but the core material 211B to the base material 10 by the adhesive 210 is shown in an enlarged portion. is the same as that of the core material 211A.
  • the side fins 1L are formed by first pouring the material of the base material 10 heated and melted into a mold corresponding to the shape of the fin, cooling and solidifying it, and then forming the legs 12, 12 of the base material 10. It is manufactured by inserting the core members 211A and 211B from the upper surface 12a of each.
  • the mold is configured so that insertion holes 10c for inserting the core members 211A and 211B are formed in advance in the upper surfaces 12a of the legs 12 and 12 when the base material 10 is solidified in the mold,
  • the core members 211A and 211B are inserted in a state in which an appropriate amount of the adhesive 210 is filled in the insertion hole 10c.
  • the outer surfaces of the core members 211A and 211B are adhered to the substrate 10 with the adhesive 210 over the entire length in the insertion hole 10c.
  • the fins of the second embodiment may be manufactured by insert molding in the same manner as the fins of the first embodiment.
  • the substrate 10 is welded to the outer surfaces of the core members 211A and 211B.
  • the rear end 211Ba of the core member 211B extending to the rear side is located forward of the base point P1 of the rear edge portion 10a of the fin, so that the rear end side of the fin bends. and the steering performance of the surfboard 2 is improved.
  • the tip 211Ab (lower end) of the core member 211A extending to the tip side (lower side) is located above the vertex P2 of the rear edge portion 10a of the fin. It becomes easy to bend near the tip side, and the steerability of the surfboard 2 is improved.
  • the outer surfaces of the core members 211A and 211B are adhered to the base material 10 with the adhesive 210, the strength of the base member 10 and the core members 211A and 211B constituting the fins can be enhanced. Further, since the core members 211A and 211B are less likely to come into direct contact with water, corrosion of the core members 211A and 211B can be prevented. In addition, since no gap is formed between the core members 211A and 211B and the insertion holes 10c in the base material 10, the fins lose weight due to the ingress of water into the fins or the absorption of water by the base material 10 and the core materials 211A and 211B. increase can be suppressed.
  • the fins of Example 2 are manufactured by inserting the core members 211A and 211B into the base material 10 molded by the mold later, so that the manufacturing process can be simplified.
  • the insertion hole 10c is not limited to being molded by a mold, and may be formed by drilling the molded base material 10 using a drill or the like.
  • the gap between the core members 211A and 211B and the insertion hole 10c may not be filled with adhesive, but in this case the gap should be small enough to prevent the core members 211A and 211B from moving relative to the substrate 10. is preferred.
  • the fins in the second embodiment can be changed not only by changing the length, thickness, material, etc. of the wire rods forming the core members 211A and 211B, but also by changing the curvature and arrangement of the core members 211A and 211B. Needless to say, the characteristics can be adjusted.
  • the core material may be composed of one wire or three or more wire rods.
  • the fin of Example 3 includes a base material 10 forming the outer shape of the fin, a core material 311 disposed inside the base material 10 so as to be biased toward the surfboard 2 side, i.e., the upper side, consists of
  • the core material 311 is a plate material made of stainless steel. Note that the core material 311 is a flat plate material having a substantially uniform overall thickness.
  • the core material may be made of other metal such as aluminum or titanium, synthetic resin, wood, bamboo, etc., other than stainless steel, as long as it has a higher strength than the base material.
  • the core material may be made of the same material as the base material. For example, by adding a filler such as glass fiber or carbon fiber to the same material as the base material, the strength is increased compared to the base material. There may be.
  • the plate material used as the core material is not limited to having a substantially uniform thickness as a whole, and may be thin and easily bendable, for example, by pressing the front end side (lower end side). Further, the plate material used as the core material may be provided with grooves, through-holes, or the like so that the tip side thereof can be easily bent.
  • the core material 311 is arranged inside the base material 10 along the outer shape of the fins.
  • the core member 311 has an outer shape similar to that of the fin, and the rear end 311a is located on the rear side of the base point P1 of the rear edge portion 10a of the fin. That is, the core member 311 extends to a position on the rear side of the imaginary line ⁇ passing through the base point P1 and extending orthogonally to the base 10b of the fin. By doing so, the high rigidity of the core material 311 can be exhibited to the rear end side of the fin.
  • the rear end 311a of the core material 311 is a portion located at the rearmost end in the entire core material 311 .
  • the tip 311b (lower end) of the core material 311 is located above the vertex P2 of the rear edge portion 10a of the fin. That is, the core material 311 extends to a position above the imaginary line ⁇ passing through the vertex P2 and extending parallel to the base 10b of the fin. Note that the tip 311b of the core material 311 is a portion located at the most extreme end (lowest end) in the entire core material 311 .
  • the core material 311 is made of a plate material, strength can be ensured even if the core material 311 is thin, and the thickness of the entire fin can be reduced.
  • the core material 311 can have an outer shape close to the outer shape of the fin, it is possible to create a strength distribution that does not hinder the original function of the fin.
  • the fins of Example 3 can be produced by either a manufacturing method by insert molding as in Example 1 or a manufacturing method in which a core material is inserted after molding of the base material 10 as in Example 2. can also be manufactured.
  • the core material 311 may have a convex portion extending inside the leg portions 12 , 12 .
  • the core material 311 may be divided into a plurality of parts, and for example, the plate material forming the core material may be divided into a front side and a rear side.
  • the fin of the fourth embodiment includes a base material 10 that forms the outer shape of the fin, and core members 411A and 411B that are biased toward the surfboard 2 side, that is, the upper side of the base material 10 inside the base material 10. and consists of
  • the core material 411A is a single wire made of stainless steel, and the core material 411B is a plate material made of stainless steel. Further, the core material 411A is bent along a portion of the outer periphery of the core material 411B and arranged so as to be in contact with the core material 411B. Note that the core members 411A and 411B may be separate or integrated.
  • the rear end 411Aa of the core material 411A is located forward of the base point P1 of the rear edge portion 10a of the fin. That is, the core member 411A is bent so as to be positioned forward of the imaginary line ⁇ passing through the base point P1 and extending orthogonally to the base 10b of the fin. Note that the rear end 411Aa of the core 411A is the rearmost portion of the entire core 411A.
  • the tip 411Ab (lower end) of the core material 411A is located above the vertex P2 of the rear edge portion 10a of the fin. That is, the core members 411A and 411B are bent so as to be positioned above the imaginary line ⁇ passing through the vertex P2 and extending parallel to the base 10b of the fin. Note that the tip 411Ab of the core material 411A is a portion located at the forefront (lowest end) in the entire core material 411A.
  • the core material 411A has both upper ends 411Ac and 411Ad extending to the interior of the two front and rear legs 12 and 12 .
  • the core members 411A and 411B can be mutually reinforced by combining the core member 411A made of the wire material and the core member 411B made of the plate material.
  • the fins of the fifth embodiment are composed of glass fibers on both sides of the core material 511, which is a plate material made of stainless steel, and which is placed in the center of the fin in the thickness direction. It is configured by laminating four glass cloths 513 each and hardening them with a polyester resin.
  • the fins in Example 5 are shaped by removing and polishing unnecessary portions of the base material solidified in the pair of molds.
  • the core material 511 in this embodiment has two front and rear legs, and is arranged inside the base material so as to be biased toward the surfboard 2 side, ie, the upper side.
  • members other than the glass cloth 513 may be laminated on both sides of the core material 511 in the base material in the fifth embodiment.
  • the core material in Example 5 is not limited to a plate material, and may be, for example, a wire material as in Examples 1 and 2, or a combination of a wire material and a plate material as in Example 4. .
  • the core material is not limited to this. It may be processed into a shape.
  • the entire leg of the fin may be configured as part of the core material.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne une ailette qui est supérieure à la fois en matière de performance de direction et de rectilinéarité d'une planche.　Une ailette 1C doit être fixée à un côté de surface arrière 2a d'une planche 2. Dans l'ailette 1C, un élément central 11 ayant une résistance élevée est agencé de façon à être décalé vers le côté planche 2.
PCT/JP2023/002078 2022-02-03 2023-01-24 Ailette WO2023149280A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022015421 2022-02-03
JP2022-015421 2022-02-03

Publications (1)

Publication Number Publication Date
WO2023149280A1 true WO2023149280A1 (fr) 2023-08-10

Family

ID=87552221

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/002078 WO2023149280A1 (fr) 2022-02-03 2023-01-24 Ailette

Country Status (1)

Country Link
WO (1) WO2023149280A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079113A1 (fr) * 1981-05-27 1983-05-18 John Robert Davies Aileron pour un support flottant
JPH06255575A (ja) * 1992-03-09 1994-09-13 Ami Jiro サーフフィンの取付構造
US20200298937A1 (en) * 2016-04-01 2020-09-24 Flying Fin Systems Pty Ltd Resiliently Flexible Fin

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0079113A1 (fr) * 1981-05-27 1983-05-18 John Robert Davies Aileron pour un support flottant
JPH06255575A (ja) * 1992-03-09 1994-09-13 Ami Jiro サーフフィンの取付構造
US20200298937A1 (en) * 2016-04-01 2020-09-24 Flying Fin Systems Pty Ltd Resiliently Flexible Fin

Similar Documents

Publication Publication Date Title
JP6018643B2 (ja) 中空断面を有する繊維複合補強材が内蔵されているバンパーバックビーム及びこれを有するバンパーの製造方法
FI119726B (fi) Ilma-aluksen kaarielementti, siipi, ohjainpinta sekä vakaaja
JP2018144708A (ja) 車体構造
JP6659555B2 (ja) 水上スポーツ用ボード、水上スポーツ用ボードのフィン、および水上スポーツ用ボードとともに使用されるように構成されているフィンを形成する方法
US20060178061A1 (en) Flex and resonance controlled watercraft
US20130244514A1 (en) Fin for surf craft
US5944570A (en) Surf riding craft
US20090280704A1 (en) Stringer of water sports board with enhanced flexibility and water sports board containing thereof
US7347754B1 (en) Flexible encapsulated spring stringer for bodyboard
EP0079113A1 (fr) Aileron pour un support flottant
US6293563B1 (en) Chassis for a gliding sport element, such as a skate, and a gliding element including such chassis
WO2023149280A1 (fr) Ailette
JP5460417B2 (ja) 釣糸ガイド及びその製造方法
JPS6345119B2 (fr)
US7435150B2 (en) Internal rib and spine reinforcement system for a hollow surfboard
US20180148141A1 (en) Sportsboard Stiffening System
US4135732A (en) Skis
US6718897B1 (en) Rideable wave propelled watersport board
JP5442870B2 (ja) 隣接するビンディング取付け領域に変更された曲げ特性を有する滑走ボード
US20090165697A1 (en) Flex controlled subassembly and watercraft
GB2605361A (en) Blank for a buoyant sports board
JP5910293B2 (ja) 樹脂成形品の強化構造
US10814940B2 (en) Board, watercraft or other vehicle body
US20090178327A1 (en) Fishing Rod Having A Multiple Tube Structure
US4681060A (en) Kayak frame section and method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23749596

Country of ref document: EP

Kind code of ref document: A1