WO2021075001A1 - Bubble retainer for waterborne vehicle - Google Patents
Bubble retainer for waterborne vehicle Download PDFInfo
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- WO2021075001A1 WO2021075001A1 PCT/JP2019/040687 JP2019040687W WO2021075001A1 WO 2021075001 A1 WO2021075001 A1 WO 2021075001A1 JP 2019040687 W JP2019040687 W JP 2019040687W WO 2021075001 A1 WO2021075001 A1 WO 2021075001A1
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- bubble
- water vehicle
- surfboard
- holes
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- 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
- B63B32/50—Boards characterised by their constructional features
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- 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
- B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
- B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
- B63B1/36—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using mechanical means
Definitions
- the present invention relates to a bubble holder for water vehicles, particularly a bubble holder disposed on the bottom surface of a surfboard.
- Surfing is a sport in which a surfer stands on a surfboard and glides on the slopes of the water formed by the waves. In order to ride the waves, you need to have some speed, and if you don't have the speed, you can't connect to the turn or the next action. In order to gain speed, it depends largely on the experience of the surfer and the skill of the paddle, but how to choose a surfboard as a tool is also important, and in general, surfers ride a "surfboard that helps speed”. Is said to be the best choice.
- air bubbles are generated by ejecting air from a plurality of air ejection holes formed on the bottom of the ship, and the air bubbles cover the space between the bottom of the ship and the outboard water (water outside the hull).
- a technique for reducing frictional resistance during navigation of a hull by forming a film is known.
- Patent Document 1 the above-mentioned hull friction resistance reducing device is used between a blower that takes in air, an air chamber in which a large number of air ejection holes communicating with the outside of the hull are formed on the bottom of the ship, and between the blower and the air chamber. It is described that the air supply pipe for connecting the air supply pipe and the check valve provided in the middle of the air supply pipe are provided. Further, in Patent Document 1, the air taken into the blower is compressed to generate compressed air, and the compressed air is sent to the air chamber through the air supply pipe and a large amount of the compressed air is sent out of the ship from a large number of air ejection holes.
- Patent Document 2 includes a sea chest provided on the bottom of a ship, a seawater pump that takes in seawater through the sea chest, and an air separator that separates air from the taken in seawater, and a sea chest. Is described as being partitioned into a plurality of chambers by a partition wall.
- the present invention is arranged on the bottom surface of a bubble holder for water vehicles, particularly a surfboard, in order to realize an appropriate buoyancy and to provide a "surfboard that helps speed". It is an object of the present invention to provide a bubble holder to be used.
- the bubble holder for a water vehicle is provided by providing an aggregate forming a plurality of small holes on the surface of the bottom of the water vehicle and holding the bubbles in the holes. It is characterized by reducing frictional resistance during navigation of a surface vehicle.
- the aggregate forming the holes may be any of a polygonal cylinder, a cylinder, and an elliptical cylinder, but a honeycomb structure is preferable.
- the aggregate forming the holes may be in the form of a sheet and may be arranged by adhering to the bottom of the water vehicle, or a recess may be provided in a part or substantially the entire surface of the bottom of the water vehicle and arranged in the recess. It may be.
- the bubble holder for water vehicles according to the present invention may be applied to small vessels such as yachts, canoes and kayaks in addition to surfboards.
- bubble holder for water vehicles according to the present invention
- bubble holder appropriate buoyancy is realized, and not only surfing experts but also beginners “help speed”. You can provide a "surfboard that will give you”.
- the manufacturing cost is low, and there is an effect that it can be widely used by applying it to small vessels such as yachts, canoes, and kayaks other than surfboards.
- FIG. 1 It is a figure which shows the state which the bubble holder which concerns on this invention are arranged on the bottom surface of a surfboard. It is an enlarged view of the symbol X shown in FIG. It is a figure which shows typically the "aggregate which forms a hole" which made into a honeycomb structure. It is a figure which shows the state which the bubble holder which concerns on this invention hold a bubble.
- the bubble holder according to the present invention is in the form of a sheet, and is a diagram schematically showing how it is attached to the bottom surface of a surfboard. It is a figure which shows an example which manufactured a part of the bottom surface of a surfboard as a bubble holder which concerns on this invention.
- FIG. It is a figure which shows the state which the bubble holder 2 which concerns on this invention are arranged on the bottom surface 1 of the surfboard 100.
- a surfboard has an elliptical plate-shaped board body in plan view and one or more fins attached to the rear portion of the bottom surface of the board body.
- three fins F are arranged at the rear part of the bottom surface 1 of the board body, and the bubble holder 2 is arranged on substantially the entire surface of the bottom surface 1.
- FIG. 2 is an enlarged view of reference numeral X shown in FIG.
- FIG. 3 is a diagram exemplifying that the bubble holder 2 is a “aggregate forming holes” having a honeycomb structure.
- the bubble holder 2 is an aggregate that forms a plurality of small holes, and the opening shape of the holes is hexagonal, and shows a honeycomb structure as shown in FIG.
- the opening shape of the hole is hexagonal, that is, an aggregate of hexagonal cylinders, but other polygonal cylinders, cylinders, and elliptical cylinders may be formed.
- FIG. FIG. 4 is a diagram showing a state in which the hole 20 of the bubble holder 2 according to the present invention holds the bubble A.
- the frictional resistance during navigation of the water vehicle is reduced. That is, not only the buoyancy of the surfboard 100 is increased by the holes 20 of the bubble holder 2 formed in the bottom 1 of the surfboard 100 holding the bubbles A, but also the frictional resistance between the water and the bottom 1 when sliding on the water surface. To reduce. This allows the surfer to increase the speed of the surfboard 100.
- Test location 1505 Kusakabe, Dojo-cho, Kita-ku, Kobe Test date: October 2-4, 1st year of Reiwa Test content: 16 types of "400 holes with different diameters and depths" , A sheet-shaped honeycomb-structured bubble holder ”was prepared, rolled in a water tank for 10 minutes, and the number of remaining bubbles in the water tank was visually counted to calculate the residual rate.
- Bubble holder A honeycomb structure made of EVA was attached to an aluminum plate (80 mm ⁇ 100 mm, thinness 1 mm). Table 1 is a table showing the residual rate of bubbles.
- the size of the opening is preferably 3 to 4 mm in diameter and 2 to 3 mm in depth. Further, when the same test as in Table 1 was performed on the "aggregate forming the hole" in which the diameter of the hole was 3 mm and the shape of the opening was formed into a circle, a triangle, a square, or a pentagon, the result of Table 2 was obtained. It was. In this way, it is preferable that the aggregate 2 forming the holes has a honeycomb structure, but the shape of the opening is constant even if it is a "aggregate forming a hole" formed into a circle, a triangle, a square, or a pentagon.
- the hole shape that is preferable for construction is to reduce frictional resistance, so the standard for the diameter and depth of the hole is that the surface area that becomes the wall is small, but maintenance (used to prevent salt from sticking because it is used in seawater)
- a honeycomb structure is preferable in consideration of factors such as ease of post-brushing (depth) and structural strength.
- FIG. 5 is a diagram schematically showing how the bubble holder 2 according to the present invention has a sheet shape and is attached to the bottom surface 1 of the surfboard 100.
- FIG. 6 is a diagram showing an example in which a part of the bottom surface of the surfboard 100 is manufactured as the bubble holder 2 according to the present invention.
- the bubble holder 2 may be formed into a sheet and attached to a ready-made surfboard with an adhesive or the like, or a recess may be formed on the bottom surface of the surfboard to form an opening surface of the hole 20 of the bubble holder 2. May be manufactured as a special product such as being embedded in the recess in accordance with the bottom surface of the board.
- the bubble holder for water vehicles of the present invention can be widely used by being applied to small vessels such as yachts and kayaks other than surfboards.
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Abstract
[Problem] An object of the present invention is to provide a bubble retainer for a waterborne vehicle, and particularly a bubble retainer disposed on a bottom surface of a surfboard, in order to realize proper buoyancy and to provide a "surfboard that helps provide speed". [Solution] To achieve the stated object, the bubble retainer for a waterborne vehicle according to the present invention is provided with an assembly forming a plurality of small holes on a surface of a bottom of the waterborne vehicle, and by holding bubbles in the holes, reduces frictional resistance when the waterborne vehicle travels.
Description
本発明は、水上乗り物用の気泡保持具、特にサーフボードの底面に配設される気泡保持具に関する。
The present invention relates to a bubble holder for water vehicles, particularly a bubble holder disposed on the bottom surface of a surfboard.
サーフィンは、サーファーがサーフボードの上に立ち、波が形成する水の斜面を滑走するスポーツである。波に乗るためには、ある程度のスピードをつける必要があり、スピードが出なければ、ターンや次のアクションにつなげていくことはできない。スピードを得るためには、サーファーの経験やパドルの技術に依存するところは大きいが、道具としてのサーフボードの選び方も重要で、一般的に、サーファーは「スピードを手助けしてくれるサーフボード」に乗ることが最善の選択といわれる。
Surfing is a sport in which a surfer stands on a surfboard and glides on the slopes of the water formed by the waves. In order to ride the waves, you need to have some speed, and if you don't have the speed, you can't connect to the turn or the next action. In order to gain speed, it depends largely on the experience of the surfer and the skill of the paddle, but how to choose a surfboard as a tool is also important, and in general, surfers ride a "surfboard that helps speed". Is said to be the best choice.
この「スピードを手助けしてくれるサーフボード」については、サーファーの身長に合致した寸法のボードの大きさ、形状、素材、構造などボードに進化が見られるが、特には「浮力が適正」であることは重要な要素といわれている。
本願出願人は、この「浮力」に注目するうちに、航行する船舶について、水の粘性による摩擦抵抗（水流摩擦抵抗）が航行の速度に影響し、この摩擦抵抗を低減する方法として、気泡が有効であることを知った。
気泡を利用する技術として、船底に形成された複数の空気噴出孔から空気を噴出させることで気泡を発生させ、該気泡により船底と船外水（船体の外部の水）との間を覆う気泡膜を形成することで、船体の航行時における摩擦抵抗を低減させる技術が知られている。 Regarding this "surfboard that helps speed", the size, shape, material, structure, etc. of the board with dimensions that match the height of the surfer have evolved, but in particular, "buoyancy is appropriate". Is said to be an important factor.
While paying attention to this "buoyancy", the applicant of the present application considers that the frictional resistance due to the viscosity of water (water flow frictional resistance) affects the speed of navigation in a sailing ship, and as a method of reducing this frictional resistance, bubbles are generated. I found it to be valid.
As a technology that utilizes air bubbles, air bubbles are generated by ejecting air from a plurality of air ejection holes formed on the bottom of the ship, and the air bubbles cover the space between the bottom of the ship and the outboard water (water outside the hull). A technique for reducing frictional resistance during navigation of a hull by forming a film is known.
本願出願人は、この「浮力」に注目するうちに、航行する船舶について、水の粘性による摩擦抵抗（水流摩擦抵抗）が航行の速度に影響し、この摩擦抵抗を低減する方法として、気泡が有効であることを知った。
気泡を利用する技術として、船底に形成された複数の空気噴出孔から空気を噴出させることで気泡を発生させ、該気泡により船底と船外水（船体の外部の水）との間を覆う気泡膜を形成することで、船体の航行時における摩擦抵抗を低減させる技術が知られている。 Regarding this "surfboard that helps speed", the size, shape, material, structure, etc. of the board with dimensions that match the height of the surfer have evolved, but in particular, "buoyancy is appropriate". Is said to be an important factor.
While paying attention to this "buoyancy", the applicant of the present application considers that the frictional resistance due to the viscosity of water (water flow frictional resistance) affects the speed of navigation in a sailing ship, and as a method of reducing this frictional resistance, bubbles are generated. I found it to be valid.
As a technology that utilizes air bubbles, air bubbles are generated by ejecting air from a plurality of air ejection holes formed on the bottom of the ship, and the air bubbles cover the space between the bottom of the ship and the outboard water (water outside the hull). A technique for reducing frictional resistance during navigation of a hull by forming a film is known.
この船体摩擦抵抗低減技術については、種々の発明が提案されている。
特許文献１には、上述した船体摩擦抵抗低減装置が、空気を取り込むブロアと、船体の外部に連通する多数の空気噴出孔が船底に形成されているエアーチャンバと、ブロアとエアーチャンバとの間を接続する空気供給管と、空気供給管の途中に設けられる逆止弁と、を備えることが記載されている。また、特許文献１には、ブロアに取り込まれた空気が圧縮されて圧縮空気が生成され、該圧縮空気が空気供給管を通りエアーチャンバに送られて多数の空気噴出孔から船外に大量の気泡が噴出されること、及び、逆止弁は空気噴出孔を通りエアーチャンバの内部に侵入した水が空気供給管を逆流することを阻止することが記載されている。
特許文献２には、上述した船体摩擦抵抗低減装置が、空気吸い込む口から吸い込んだ空気を加圧して空気吹き出し部に供給する空気供給装置と、加圧空気を水中に噴出させる空気吹き出し部と、を備えることが記載されている。また、特許文献２には、船底に設けられるシーチェストと、該シーチェストを介して海水を取り込む海水ポンプと、取り込んだ海水から空気を分離する空気分離器と、を備えること、及び、シーチェストは隔壁により複数のチャンバに区画されることが記載されている。 Various inventions have been proposed for this hull friction resistance reduction technique.
InPatent Document 1, the above-mentioned hull friction resistance reducing device is used between a blower that takes in air, an air chamber in which a large number of air ejection holes communicating with the outside of the hull are formed on the bottom of the ship, and between the blower and the air chamber. It is described that the air supply pipe for connecting the air supply pipe and the check valve provided in the middle of the air supply pipe are provided. Further, in Patent Document 1, the air taken into the blower is compressed to generate compressed air, and the compressed air is sent to the air chamber through the air supply pipe and a large amount of the compressed air is sent out of the ship from a large number of air ejection holes. It is described that air bubbles are ejected and that the check valve prevents water that has entered the inside of the air chamber through the air ejection hole from flowing back through the air supply pipe.
InPatent Document 2, the above-mentioned hull friction resistance reducing device pressurizes the air sucked from the air suction port and supplies it to the air blowing portion, and the air blowing portion for ejecting the pressurized air into the water. It is stated that Further, Patent Document 2 includes a sea chest provided on the bottom of a ship, a seawater pump that takes in seawater through the sea chest, and an air separator that separates air from the taken in seawater, and a sea chest. Is described as being partitioned into a plurality of chambers by a partition wall.
特許文献１には、上述した船体摩擦抵抗低減装置が、空気を取り込むブロアと、船体の外部に連通する多数の空気噴出孔が船底に形成されているエアーチャンバと、ブロアとエアーチャンバとの間を接続する空気供給管と、空気供給管の途中に設けられる逆止弁と、を備えることが記載されている。また、特許文献１には、ブロアに取り込まれた空気が圧縮されて圧縮空気が生成され、該圧縮空気が空気供給管を通りエアーチャンバに送られて多数の空気噴出孔から船外に大量の気泡が噴出されること、及び、逆止弁は空気噴出孔を通りエアーチャンバの内部に侵入した水が空気供給管を逆流することを阻止することが記載されている。
特許文献２には、上述した船体摩擦抵抗低減装置が、空気吸い込む口から吸い込んだ空気を加圧して空気吹き出し部に供給する空気供給装置と、加圧空気を水中に噴出させる空気吹き出し部と、を備えることが記載されている。また、特許文献２には、船底に設けられるシーチェストと、該シーチェストを介して海水を取り込む海水ポンプと、取り込んだ海水から空気を分離する空気分離器と、を備えること、及び、シーチェストは隔壁により複数のチャンバに区画されることが記載されている。 Various inventions have been proposed for this hull friction resistance reduction technique.
In
In
しかしながら、特許文献１や２の技術は大がかりにすぎ、サーフボードのような小型の水上乗り物に適用することは困難である。そこで、本発明は、上記の事情に鑑み、適正な浮力を実現するとともに、「スピードを手助けしてくれるサーフボード」を提供するために、水上乗り物用の気泡保持具、特にサーフボードの底面に配設される気泡保持具を提供することを目的とする。
However, the techniques of Patent Documents 1 and 2 are too large and difficult to apply to small water vehicles such as surfboards. Therefore, in view of the above circumstances, the present invention is arranged on the bottom surface of a bubble holder for water vehicles, particularly a surfboard, in order to realize an appropriate buoyancy and to provide a "surfboard that helps speed". It is an object of the present invention to provide a bubble holder to be used.
上記目的を達成するため、本発明に係る水上乗り物用の気泡保持具は、水上乗り物において、船底の表面に複数の小さな孔を形成する集合体を設け、該孔に気泡を保持することにより、水上乗り物の航行時における摩擦抵抗を低減させるものであることを特徴とする。なお、孔を形成する集合体は、多角筒体、円筒体、楕円筒体のいずれかの集合体であればよいが、ハニカム構造にすると好適である。
In order to achieve the above object, the bubble holder for a water vehicle according to the present invention is provided by providing an aggregate forming a plurality of small holes on the surface of the bottom of the water vehicle and holding the bubbles in the holes. It is characterized by reducing frictional resistance during navigation of a surface vehicle. The aggregate forming the holes may be any of a polygonal cylinder, a cylinder, and an elliptical cylinder, but a honeycomb structure is preferable.
また、孔を形成する集合体はシート状とし、水上乗り物の船底に接着して配置してもよいし、水上乗り物の船底の一部又は略全面に凹部を設け、この凹部に配設するようにしてもよい。さらに、本発明に係る水上乗り物用の気泡保持具は、サーフボードの他、ヨットやカヌー、カヤック等小型の船舶に適用されてもよい。
Further, the aggregate forming the holes may be in the form of a sheet and may be arranged by adhering to the bottom of the water vehicle, or a recess may be provided in a part or substantially the entire surface of the bottom of the water vehicle and arranged in the recess. It may be. Further, the bubble holder for water vehicles according to the present invention may be applied to small vessels such as yachts, canoes and kayaks in addition to surfboards.
本発明に係る水上乗り物用の気泡保持具（以下、単に「気泡保持具」という。）によれば、適正な浮力を実現するとともに、サーフィン熟練者のみならず初心者にも「スピードを手助けしてくれるサーフボード」を提供することができる。また、簡易に取付け可能なことから、製造コストが小さく、サーフボード以外のヨットやカヌー、カヤック等小型の船舶に適用して広く利用できるという効果がある。
According to the bubble holder for water vehicles according to the present invention (hereinafter, simply referred to as "bubble holder"), appropriate buoyancy is realized, and not only surfing experts but also beginners "help speed". You can provide a "surfboard that will give you". In addition, since it can be easily installed, the manufacturing cost is low, and there is an effect that it can be widely used by applying it to small vessels such as yachts, canoes, and kayaks other than surfboards.
以下、本発明の実施の形態を図面に基づき詳細に説明する。各図において、同一部分には同一番号を付し、重複する説明は省略する。また、図面は、本発明を理解するために誇張して表現している場合もあり、必ずしも縮尺どおり精緻に表したものではないことに留意されたい。なお、本発明は下記に示される実施の形態に限定されるものではない。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each figure, the same parts are assigned the same number, and duplicate description is omitted. In addition, it should be noted that the drawings may be exaggerated in order to understand the present invention, and are not necessarily expressed precisely according to the scale. The present invention is not limited to the embodiments shown below.
実施例１を図面を参照して詳細に説明する。
Example 1 will be described in detail with reference to the drawings.
図１を参照する。本願発明に係る気泡保持具２が、サーフボード１００の底面１に配設された状態を示す図である。概して、サーフボードは、平面視において楕円形の板状のボード本体と、そのボード本体の底面の後部に一又は複数のフィンが取り付けられている。図１においては、サーフボード１００は、ボード本体の底面１の後部に３つのフィンＦが配設されており、底面１の略全面に気泡保持具２が配設されている。
Refer to FIG. It is a figure which shows the state which the bubble holder 2 which concerns on this invention are arranged on the bottom surface 1 of the surfboard 100. In general, a surfboard has an elliptical plate-shaped board body in plan view and one or more fins attached to the rear portion of the bottom surface of the board body. In FIG. 1, in the surfboard 100, three fins F are arranged at the rear part of the bottom surface 1 of the board body, and the bubble holder 2 is arranged on substantially the entire surface of the bottom surface 1.
図２と３を参照する。図２は、図１に示す符号Ｘの拡大図である。図３は、気泡保持具２がハニカム構造にした「孔を形成する集合体」であることを例示的に示す図である。図２に示すように、気泡保持具２は、複数の小さな孔を形成する集合体であって孔の開口形状は六角形であり、図３に示すようなハニカム構造を示している。なお、ハニカム構造とした場合は、孔の開口形状は六角形、すなわち、六角筒体の集合体となるが、それ以外の多角筒体、円筒体、楕円筒体で形成されてもよいし、シート板に複数の孔を穿設して「孔を形成する集合体」としても。さらに、ドリルやレーザー刻印機などでフラットなサーフボードの底面に直接孔を穿設して「孔を形成する集合体」としてもよい。
Refer to FIGS. 2 and 3. FIG. 2 is an enlarged view of reference numeral X shown in FIG. FIG. 3 is a diagram exemplifying that the bubble holder 2 is a “aggregate forming holes” having a honeycomb structure. As shown in FIG. 2, the bubble holder 2 is an aggregate that forms a plurality of small holes, and the opening shape of the holes is hexagonal, and shows a honeycomb structure as shown in FIG. In the case of a honeycomb structure, the opening shape of the hole is hexagonal, that is, an aggregate of hexagonal cylinders, but other polygonal cylinders, cylinders, and elliptical cylinders may be formed. Also as an "aggregate that forms holes" by drilling multiple holes in the sheet plate. Further, a hole may be directly drilled in the bottom surface of a flat surfboard with a drill, a laser engraving machine, or the like to form an “aggregate forming a hole”.
図４を参照する。図４は、本願発明に係る気泡保持具２の孔２０が気泡Ａを保持した状態を示す図である。このように、孔２０に気泡Ａを保持することで、水上乗り物の航行時における摩擦抵抗を低減させるものである。すなわち、サーフボード１００の船底１に形成された気泡保持具２の孔２０が気泡Ａを保持することでサーフボード１００の浮力を増加するのみならず、水面を滑走するにおいて水と船底１との摩擦抵抗を低減させる。これにより、サーファーは、サーフボード１００のスピードを上げることができる。
なお、上述したとおり、サーフィンは、サーファーがサーフボードの上に立ち、波が形成する水の斜面を滑走するスポーツであることから、ボード本体が水中で斜めになったり、水面から離れたりすることもある。したがって、気泡保持具２が気泡Ａを保持し続けるためには、ボード本体が水中で転動しても孔２０が気泡Ａを離さない開口の寸法と深さの設定が問題となる。そこで、本願の出願人は、種々の試験を行った。
試験場所：神戸市北区道場町日下部1505 株式会社トライアンドイー内
試験日：令和元年１０月２日～４日
試験内容：径及び深さの異なる１６種類の「４００の孔を備えた、シート状のハニカム構造の気泡保持具」を準備し、水槽の中で１０分転動させて、水槽内で気泡の残存数を目視で数え、残存率を計算した。
気泡保持具：アルミ板（８０ｍｍ×１００ｍｍ、薄さ１ｍｍ）にEVA製のハニカム構造体を貼り付けた。
表１は、気泡の残存率を示す表である。
上記の試験結果から、孔を形成する集合体２をハニカム構造とした場合、開口の寸法は、径を３～４ｍｍ、深さを２～３ｍｍとすると好適であることを確認した。
また、孔の径が３ｍｍで、開口の形状を円形、三角形、正方形、五角形に形成された「孔を形成する集合体」について、表１と同様の試験をしたところ、表２の結果となった。このように、孔を形成する集合体２をハニカム構造とした場合が好適であるが、開口の形状を円形、三角形、正方形、五角形に形成した「孔を形成する集合体」であっても一定の気泡保持は可能と考えられる。
上記の試験結果から、施工に好ましい孔形状は摩擦抵抗を減らすため穴の径深さの基準は壁になる表面面積が小さいものの、メンテナンス（海水で使用するため塩が固着するのを防ぐため使用後ブラッシングがし易い深さ）のし易さ、構造の強度などの要素を勘案すると、ハニカム構造が好適である。 See FIG. FIG. 4 is a diagram showing a state in which thehole 20 of the bubble holder 2 according to the present invention holds the bubble A. By holding the air bubbles A in the holes 20 in this way, the frictional resistance during navigation of the water vehicle is reduced. That is, not only the buoyancy of the surfboard 100 is increased by the holes 20 of the bubble holder 2 formed in the bottom 1 of the surfboard 100 holding the bubbles A, but also the frictional resistance between the water and the bottom 1 when sliding on the water surface. To reduce. This allows the surfer to increase the speed of the surfboard 100.
As mentioned above, surfing is a sport in which a surfer stands on a surfboard and slides on the slope of the water formed by the waves, so the board itself may be slanted in the water or separated from the water surface. is there. Therefore, in order for thebubble holder 2 to continue to hold the bubble A, there is a problem in setting the size and depth of the opening in which the hole 20 does not release the bubble A even if the board body rolls in water. Therefore, the applicant of the present application has conducted various tests.
Test location: 1505 Kusakabe, Dojo-cho, Kita-ku, Kobe Test date: October 2-4, 1st year of Reiwa Test content: 16 types of "400 holes with different diameters and depths" , A sheet-shaped honeycomb-structured bubble holder ”was prepared, rolled in a water tank for 10 minutes, and the number of remaining bubbles in the water tank was visually counted to calculate the residual rate.
Bubble holder: A honeycomb structure made of EVA was attached to an aluminum plate (80 mm × 100 mm,thinness 1 mm).
Table 1 is a table showing the residual rate of bubbles.
From the above test results, it was confirmed that when the aggregate 2 forming the holes has a honeycomb structure, the size of the opening is preferably 3 to 4 mm in diameter and 2 to 3 mm in depth.
Further, when the same test as in Table 1 was performed on the "aggregate forming the hole" in which the diameter of the hole was 3 mm and the shape of the opening was formed into a circle, a triangle, a square, or a pentagon, the result of Table 2 was obtained. It was. In this way, it is preferable that the aggregate 2 forming the holes has a honeycomb structure, but the shape of the opening is constant even if it is a "aggregate forming a hole" formed into a circle, a triangle, a square, or a pentagon. It is considered possible to retain the air bubbles.
From the above test results, the hole shape that is preferable for construction is to reduce frictional resistance, so the standard for the diameter and depth of the hole is that the surface area that becomes the wall is small, but maintenance (used to prevent salt from sticking because it is used in seawater) A honeycomb structure is preferable in consideration of factors such as ease of post-brushing (depth) and structural strength.
なお、上述したとおり、サーフィンは、サーファーがサーフボードの上に立ち、波が形成する水の斜面を滑走するスポーツであることから、ボード本体が水中で斜めになったり、水面から離れたりすることもある。したがって、気泡保持具２が気泡Ａを保持し続けるためには、ボード本体が水中で転動しても孔２０が気泡Ａを離さない開口の寸法と深さの設定が問題となる。そこで、本願の出願人は、種々の試験を行った。
試験場所：神戸市北区道場町日下部1505 株式会社トライアンドイー内
試験日：令和元年１０月２日～４日
試験内容：径及び深さの異なる１６種類の「４００の孔を備えた、シート状のハニカム構造の気泡保持具」を準備し、水槽の中で１０分転動させて、水槽内で気泡の残存数を目視で数え、残存率を計算した。
気泡保持具：アルミ板（８０ｍｍ×１００ｍｍ、薄さ１ｍｍ）にEVA製のハニカム構造体を貼り付けた。
表１は、気泡の残存率を示す表である。
上記の試験結果から、施工に好ましい孔形状は摩擦抵抗を減らすため穴の径深さの基準は壁になる表面面積が小さいものの、メンテナンス（海水で使用するため塩が固着するのを防ぐため使用後ブラッシングがし易い深さ）のし易さ、構造の強度などの要素を勘案すると、ハニカム構造が好適である。 See FIG. FIG. 4 is a diagram showing a state in which the
As mentioned above, surfing is a sport in which a surfer stands on a surfboard and slides on the slope of the water formed by the waves, so the board itself may be slanted in the water or separated from the water surface. is there. Therefore, in order for the
Test location: 1505 Kusakabe, Dojo-cho, Kita-ku, Kobe Test date: October 2-4, 1st year of Reiwa Test content: 16 types of "400 holes with different diameters and depths" , A sheet-shaped honeycomb-structured bubble holder ”was prepared, rolled in a water tank for 10 minutes, and the number of remaining bubbles in the water tank was visually counted to calculate the residual rate.
Bubble holder: A honeycomb structure made of EVA was attached to an aluminum plate (80 mm × 100 mm,
Table 1 is a table showing the residual rate of bubbles.
From the above test results, the hole shape that is preferable for construction is to reduce frictional resistance, so the standard for the diameter and depth of the hole is that the surface area that becomes the wall is small, but maintenance (used to prevent salt from sticking because it is used in seawater) A honeycomb structure is preferable in consideration of factors such as ease of post-brushing (depth) and structural strength.
図５と６を参照する。図５は、本願発明に係る気泡保持具２はシート状であって、サーフボード１００の底面１に貼り付ける様子を模式的に示す図である。図６は、サーフボード１００の底面の一部を本願発明に係る気泡保持具２として製作した一例を示す図である。図５のように、気泡保持具２はシート状として、既製のサーフボードに接着剤等で取り付けるようにしてもよいし、サーフボードの底面に凹部を形成し、気泡保持具２の孔２０の開口面をボードの底面に合わせて該凹部に埋設する等した専用品として製作してもよい。
Refer to FIGS. 5 and 6. FIG. 5 is a diagram schematically showing how the bubble holder 2 according to the present invention has a sheet shape and is attached to the bottom surface 1 of the surfboard 100. FIG. 6 is a diagram showing an example in which a part of the bottom surface of the surfboard 100 is manufactured as the bubble holder 2 according to the present invention. As shown in FIG. 5, the bubble holder 2 may be formed into a sheet and attached to a ready-made surfboard with an adhesive or the like, or a recess may be formed on the bottom surface of the surfboard to form an opening surface of the hole 20 of the bubble holder 2. May be manufactured as a special product such as being embedded in the recess in accordance with the bottom surface of the board.
以上、本発明の水上乗り物用の気泡保持具２における好ましい実施形態を図示して説明してきたが、本発明の技術的範囲を逸脱することなく種々の変更が可能であることは理解されるであろう。
Although the preferred embodiment of the bubble holder 2 for a water vehicle of the present invention has been illustrated and described above, it is understood that various changes can be made without departing from the technical scope of the present invention. There will be.
本発明の水上乗り物用の気泡保持具は、サーフボード以外のヨットやカヤック等小型の船舶に適用して広く利用することができる。
The bubble holder for water vehicles of the present invention can be widely used by being applied to small vessels such as yachts and kayaks other than surfboards.
１００ サーフボード
１ サーフボードの底面
２ 気泡保持具
２０ 孔
Ａ 気泡
Ｆ フィン 100surfboard 1 bottom of surfboard 2 bubble holder 20 holes A bubble F fin
１ サーフボードの底面
２ 気泡保持具
２０ 孔
Ａ 気泡
Ｆ フィン 100
Claims (7)
- 水上乗り物において、船底の表面に複数の小さな孔を形成する集合体を設け、該孔に気泡を保持することにより、前記水上乗り物の航行時における摩擦抵抗を低減させる水上乗り物用の気泡保持具。 In a water vehicle, a bubble holder for a water vehicle that reduces frictional resistance during navigation of the water vehicle by providing an aggregate that forms a plurality of small holes on the surface of the bottom of the ship and holding air bubbles in the holes.
- 前記孔を形成する集合体は、多角筒体、円筒体、楕円筒体のいずれかの集合体であることを特徴とする請求項１に記載の水上乗り物用の気泡保持具。 The bubble holder for a water vehicle according to claim 1, wherein the aggregate forming the hole is an aggregate of any of a polygonal cylinder, a cylinder, and an elliptical cylinder.
- 前記孔を形成する集合体は、ハニカム構造を形成したものであることを特徴とする請求項１に記載の水上乗り物用の気泡保持具。 The bubble holder for a water vehicle according to claim 1, wherein the aggregate forming the holes has a honeycomb structure.
- 前記孔を形成する集合体はシート体であり、前記水上乗り物の船底に接着して配設されることを特徴とする請求項１ないし３のいずれかに記載の水上乗り物用の気泡保持具。 The bubble holder for a water vehicle according to any one of claims 1 to 3, wherein the aggregate forming the hole is a sheet body and is arranged so as to be adhered to the bottom of the water vehicle.
- 前記水上乗り物の船底の一部に凹部を設け、前記孔を形成する集合体は該凹部に配設されることを特徴とする請求項１ないし３のいずれかに記載の水上乗り物用の気泡保持具。 The bubble retention for a water vehicle according to any one of claims 1 to 3, wherein a recess is provided in a part of the bottom of the water vehicle, and the aggregate forming the hole is arranged in the recess. Ingredients.
- 前記水上乗り物は、サーフボードであることを特徴とする請求項１ないし５のいずれかに記載の水上乗り物用の気泡保持具。 The bubble holder for a water vehicle according to any one of claims 1 to 5, wherein the water vehicle is a surfboard.
- 前記水上乗り物は、小型の船舶であることを特徴とする請求項１ないし５のいずれかに記載の水上乗り物用の気泡保持具。 The bubble holder for a water vehicle according to any one of claims 1 to 5, wherein the water vehicle is a small ship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/040687 WO2021075001A1 (en) | 2019-10-16 | 2019-10-16 | Bubble retainer for waterborne vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/040687 WO2021075001A1 (en) | 2019-10-16 | 2019-10-16 | Bubble retainer for waterborne vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021075001A1 true WO2021075001A1 (en) | 2021-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/040687 WO2021075001A1 (en) | 2019-10-16 | 2019-10-16 | Bubble retainer for waterborne vehicle |
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| Country | Link |
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| WO (1) | WO2021075001A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238434A (en) * | 1991-03-15 | 1993-08-24 | Kransco | Textured bottom skin for bodyboards and method |
| JP2009255621A (en) * | 2008-04-11 | 2009-11-05 | Ihi Corp | Hull frictional resistance reducing device |
| CN101618761A (en) * | 2008-07-04 | 2010-01-06 | 杨金玉 | River transport system of dense waterway net region |
| JP2011240918A (en) * | 2010-05-18 | 2011-12-01 | Daewoo Shipbuilding & Marine Engineering Co Ltd | Air cavity vessel |
| JP2015199489A (en) * | 2014-03-31 | 2015-11-12 | 公立大学法人大阪府立大学 | Ship having ship bottom air circulation tank |
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2019
- 2019-10-16 WO PCT/JP2019/040687 patent/WO2021075001A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238434A (en) * | 1991-03-15 | 1993-08-24 | Kransco | Textured bottom skin for bodyboards and method |
| JP2009255621A (en) * | 2008-04-11 | 2009-11-05 | Ihi Corp | Hull frictional resistance reducing device |
| CN101618761A (en) * | 2008-07-04 | 2010-01-06 | 杨金玉 | River transport system of dense waterway net region |
| JP2011240918A (en) * | 2010-05-18 | 2011-12-01 | Daewoo Shipbuilding & Marine Engineering Co Ltd | Air cavity vessel |
| JP2015199489A (en) * | 2014-03-31 | 2015-11-12 | 公立大学法人大阪府立大学 | Ship having ship bottom air circulation tank |
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