JP5972854B2 - Joining method and joined body of fiber reinforced composite member, and manufacturing method of wind turbine blade - Google Patents

Joining method and joined body of fiber reinforced composite member, and manufacturing method of wind turbine blade Download PDF

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JP5972854B2
JP5972854B2 JP2013259741A JP2013259741A JP5972854B2 JP 5972854 B2 JP5972854 B2 JP 5972854B2 JP 2013259741 A JP2013259741 A JP 2013259741A JP 2013259741 A JP2013259741 A JP 2013259741A JP 5972854 B2 JP5972854 B2 JP 5972854B2
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fiber reinforced
reinforced composite
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JP2015116672A (en
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新藤　健太郎
健太郎 新藤
利和 重冨
利和 重冨
藤田　健
健 藤田
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Mitsubishi Heavy Industries Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/304—In-plane lamination by juxtaposing or interleaving of plies, e.g. scarf joining

Description

本開示は、強化繊維を含む繊維強化複合部材の接合方法及び接合体、並びに風車翼の製造方法に関する。   The present disclosure relates to a joining method and joined body of fiber-reinforced composite members including reinforcing fibers, and a method for manufacturing a wind turbine blade.

従来、樹脂及び強化繊維を含む繊維強化複合部材は、高強度で且つ軽量であることから、風車翼、航空機の主翼、自動車、船舶、鉄道車両等の部材として幅広く用いられている。一般に、繊維強化複合部材は、部材に要求される強度および剛性を有する積層構造となるように、強化繊維を含む積層シートが複数積み重ねられた構成を有することが多い。繊維強化複合部材を構成する積層シートは、通常、一方向に引き揃えられた繊維または織られた繊維からなる薄いシート状部材が複数積層されて一体化された構成を有する。例えば、繊維強化複合部材を製造する手法として、ドライクロスに樹脂を含浸させて該樹脂を硬化させるものや、強化繊維基材に樹脂が含浸された半硬化状態のプリプレグ材を硬化させるものが知られている。   2. Description of the Related Art Conventionally, fiber reinforced composite members including resin and reinforcing fibers are widely used as members for wind turbine blades, aircraft main wings, automobiles, ships, railway vehicles, and the like because of their high strength and light weight. In general, a fiber-reinforced composite member often has a configuration in which a plurality of laminated sheets including reinforcing fibers are stacked so as to have a laminated structure having the strength and rigidity required for the member. The laminated sheet constituting the fiber-reinforced composite member usually has a configuration in which a plurality of thin sheet-like members made of fibers aligned in one direction or woven fibers are laminated and integrated. For example, as a method for manufacturing a fiber reinforced composite member, there are known a method in which a dry cloth is impregnated with a resin to cure the resin, and a method in which a semi-cured prepreg material in which a reinforcing fiber base material is impregnated with a resin is cured. It has been.

このような繊維強化複合部材においては、接合部が存在しない部材は強度が確保されるものの、繊維強化複合部材同士を接合した場合、接合部における強度低下が問題となる。そのため、十分な強度を保持しながら繊維強化複合部材同士を接合可能な技術が求められている。   In such a fiber reinforced composite member, although strength is ensured for a member that does not have a joined portion, when the fiber reinforced composite members are joined together, a decrease in strength at the joined portion becomes a problem. Therefore, a technique capable of joining fiber reinforced composite members while maintaining sufficient strength is required.

そこで、接合強度の向上を図った繊維強化複合部材の接合方法として、繊維強化複合部材の端部同士を重ね合わせたラップ接合や繊維強化複合部材端部の突き合わせ部位をテーパ形状にした接合が知られている。また、例えば特許文献１には、繊維強化複合部材同士の接合部を補強繊維クロスと硬化性樹脂によって補強するとともに、繊維強化複合部材の端部間に架け渡したプレートを繊維強化複合部材に接着した構成が開示されている。さらに、特許文献２及び３にも同様に、繊維強化複合部材の端部間に架け渡した補強材によって繊維強化複合部材同士を接合する方法が記載されている。   Therefore, as a method of joining fiber reinforced composite members with improved joint strength, lap joining where the ends of fiber reinforced composite members are overlapped and joining where the ends of fiber reinforced composite members are tapered are known. It has been. Further, for example, in Patent Document 1, a joint between fiber reinforced composite members is reinforced with a reinforcing fiber cloth and a curable resin, and a plate spanned between ends of the fiber reinforced composite member is bonded to the fiber reinforced composite member. The configuration is disclosed. Further, Patent Documents 2 and 3 similarly describe a method of joining fiber reinforced composite members with a reinforcing material spanned between ends of fiber reinforced composite members.

特公平４−５８７８２号公報Japanese Patent Publication No. 4-58782 特許２５８３２５９号公報Japanese Patent No. 2582259 特許３８２５３４６号公報Japanese Patent No. 3825346

ところで、繊維強化複合部材を接合する際には、一次構造部材では、引っ張り強度よりも圧縮強度が重要となる。通常、繊維強化複合部材の圧縮強度はその引っ張り強度よりも低く、各種構造物の設計時には、この圧縮強度を目安に設計を行うことが多い。しかしながら、強度部材として繊維強化複合部材を用いる際に、接合部における圧縮強度不足により強度信頼性に問題が生じることがあった。
従来の接合方法のうちラップ接合は、繊維強化複合部材同士を単に突き合わせて接合する場合よりも接合強度は向上するものの、やはり十分な接合強度を得ることは難しく、特に構造体やその強度部材として用いる際には強度が不足する場合がある。また、繊維強化複合部材の突き合わせ領域をテーパ状に形成する接合は、突き合わせ領域の加工に手間がかかるという問題があった。さらに、特許文献１乃至３に記載される接合方法では、繊維強化複合部材同士を突き合わせた接合部を挟むように補強材を配置しているため、圧縮応力が加えられた際に生じる面外変形をある程度抑制できるかもしれないが、必要とする圧縮強度を得るためには繊維強化複合部材同士の接合部に十分な厚さ及び面積の補強材を設けなければならない。そのため、繊維強化複合部材の用途によっては、補強材の重量やサイズが問題となり、採用が難しい場合がある。 By the way, when bonding fiber-reinforced composite members, compressive strength is more important than tensile strength for primary structural members. Usually, the compressive strength of the fiber reinforced composite member is lower than its tensile strength, and when designing various structures, the compressive strength is often designed based on this compressive strength. However, when a fiber reinforced composite member is used as the strength member, there may be a problem in strength reliability due to insufficient compressive strength at the joint.
Among conventional bonding methods, lap bonding improves bonding strength compared to simply joining fiber reinforced composite members together, but it is still difficult to obtain sufficient bonding strength, especially as a structure or its strength member When used, the strength may be insufficient. Moreover, the joining which forms the butt | matching area | region of a fiber reinforced composite member in a taper shape has the problem that processing of a butt | matching area | region takes time. Furthermore, in the joining methods described in Patent Documents 1 to 3, since the reinforcing material is disposed so as to sandwich the joined portion where the fiber-reinforced composite members are abutted with each other, the out-of-plane deformation that occurs when compressive stress is applied. However, in order to obtain the required compressive strength, a reinforcing material having a sufficient thickness and area must be provided at the joint between the fiber reinforced composite members. Therefore, depending on the use of the fiber-reinforced composite member, the weight and size of the reinforcing material may be a problem, and it may be difficult to adopt.

本発明の少なくとも一実施形態は、上述の事情に鑑み、接合部における圧縮強度の向上に寄与する接合構造を実現することができる繊維強化複合部材の接合方法及び接合体、並びに風車翼の製造方法を提供することを目的とする。   In view of the above circumstances, at least one embodiment of the present invention is a fiber-reinforced composite member joining method and joined body, and a wind turbine blade manufacturing method capable of realizing a joining structure that contributes to an improvement in compressive strength at the joint. The purpose is to provide.

本発明の少なくとも一実施形態に係る繊維強化複合部材の接合方法は、
樹脂及び繊維束を含む第１繊維強化ロッド部材の集合である第１繊維強化複合部材の端部と、樹脂及び繊維束を含む第２繊維強化ロッド部材の集合である第２繊維強化複合部材の端部とを突き合わせる突合せステップと、
前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部とを接合する接合ステップと、を備え、
少なくとも一本の前記第１繊維強化ロッド部材の端面が周囲の前記第１繊維強化ロッド部材の端面に対して窪み、前記第１繊維強化複合部材の前記端部には前記少なくとも一本の前記第１繊維強化ロッド部材によって第１凹部が形成されており、
少なくとも一本の前記第２繊維強化ロッド部材の端面が周囲の前記第２繊維強化ロッド部材の端面に対して突出し、前記第２繊維強化複合部材の前記端部には前記少なくとも一本の前記第２繊維強化ロッド部材によって第２凸部が形成されており、
前記突合せステップでは、前記第１繊維強化複合部材の前記第１凹部に前記第２繊維強化複合部材の前記第２凸部を嵌め合わせ、
前記接合ステップでは、前記第１繊維強化複合部材と前記第２繊維強化複合部材の端部同士を突き合わせた状態で、前記前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部との間の隙間に樹脂を注入し、該樹脂を硬化させることを特徴とする。 A method for joining fiber-reinforced composite members according to at least one embodiment of the present invention is as follows.
An end portion of a first fiber reinforced composite member that is a set of first fiber reinforced rod members including a resin and a fiber bundle, and a second fiber reinforced composite member that is a set of second fiber reinforced rod members including a resin and a fiber bundle. A butting step of matching the end,
Joining the end of the first fiber reinforced composite member and the end of the second fiber reinforced composite member; and
The end surface of at least one first fiber reinforced rod member is recessed with respect to the end surface of the surrounding first fiber reinforced rod member, and the end portion of the first fiber reinforced composite member has the at least one first fiber reinforced rod member. 1st recessed part is formed of 1 fiber reinforced rod member,
At least one end face of the second fiber reinforced rod member protrudes from an end face of the surrounding second fiber reinforced rod member, and the end portion of the second fiber reinforced composite member has the at least one second end. The 2nd convex part is formed with 2 fiber reinforced rod members,
In the butting step, the second convex portion of the second fiber-reinforced composite member is fitted into the first concave portion of the first fiber-reinforced composite member,
In the joining step, the end portion of the first fiber reinforced composite member and the second fiber reinforced composite member in a state where the end portions of the first fiber reinforced composite member and the second fiber reinforced composite member are abutted with each other. A resin is injected into a gap between the end portions of the resin and the resin is cured.

上記繊維強化複合部材の接合方法によれば、第１繊維強化複合部材の第１凹部に第２繊維強化複合部材の第２凸部を嵌め合わせた後、これらの隙間に注入した樹脂を硬化させて第１繊維強化複合部材と第２繊維強化複合部材を接合するようになっている。これにより接合された接合体は、第１凹部の壁面によって第２凸部の上下面（繊維強化複合部材の厚さ方向における第２凸部の両端面。即ち、繊維強化複合部材の面内方向に沿った第２凸部の外表面。）が押さえられるので、圧縮応力が加わっても面外方向へ座屈しにくい構造とすることができ、接合部における圧縮強度を高く維持できる。よって、補強材の有無にかかわらず、繊維強化複合部材の接合構造自体が高い圧縮強度の実現に寄与し、結果的に繊維強化複合部材の接合による強度信頼性の低下を抑制できる。また、第１繊維強化複合部材又は第２繊維強化複合部材は、それぞれ、樹脂及び繊維束を含む第１繊維強化ロッド部材又は第２繊維強化ロッド部材の集合によって構成されるため、第１凹部又は第２凸部を容易に形成できる。さらに、第１繊維強化ロッド部材又は第２繊維強化ロッド部材の端部長さをそれぞれ調整することで、所望の位置に所望の形状・サイズの第１凹部又は第２凸部を得ることができる。   According to the above-mentioned fiber reinforced composite member joining method, after the second convex portion of the second fiber reinforced composite member is fitted into the first concave portion of the first fiber reinforced composite member, the resin injected into these gaps is cured. The first fiber reinforced composite member and the second fiber reinforced composite member are joined together. The joined body joined in this manner has upper and lower surfaces of the second convex portion (both end surfaces of the second convex portion in the thickness direction of the fiber-reinforced composite member. That is, in-plane direction of the fiber-reinforced composite member) The outer surface of the second convex portion along the surface of the second convex portion is suppressed, so that even when compressive stress is applied, it is possible to make the structure difficult to buckle in the out-of-plane direction, and the compressive strength at the joint portion can be maintained high. Therefore, regardless of the presence or absence of the reinforcing material, the joint structure itself of the fiber reinforced composite member contributes to the realization of a high compressive strength, and as a result, a decrease in strength reliability due to the joining of the fiber reinforced composite member can be suppressed. Further, since the first fiber reinforced composite member or the second fiber reinforced composite member is constituted by a set of the first fiber reinforced rod member or the second fiber reinforced rod member including the resin and the fiber bundle, respectively, A 2nd convex part can be formed easily. Furthermore, the 1st recessed part or 2nd convex part of a desired shape and size can be obtained in a desired position by adjusting the edge part length of a 1st fiber reinforced rod member or a 2nd fiber reinforced rod member, respectively.

一実施形態において、前記第１繊維強化部材の端部には、前記周囲の前記第１繊維強化ロッド部材の端面に対して窪んだ前記少なくとも一本の前記第１繊維強化ロッド部材によって複数の前記第１凹部が形成され、前記第２繊維強化部材の端部には、前記周囲の前記第２繊維強化ロッド部材の端面に対して突出した前記少なくとも一本の前記第２繊維強化ロッド部材によって複数の前記第２凸部が形成され、前記突合せステップでは、複数の前記第１凹部にそれぞれ前記第２凸部を嵌め合わせるようになっている。
このように、第１繊維強化複合部材に複数の第１凹部を設けることにより、第１繊維強化複合部材と第２繊維強化複合部材とが嵌合する箇所が増え、より一層圧縮強度を高くできる。すなわち、第１繊維強化部材の第１凹部と第２繊維強化部材の第２凸部との嵌合箇所の増加に伴って、第１凹部の壁面と第２凸部の上下面との接触部（樹脂を介した接触部も含む。）の面積が増大するので、接合体の面外方向への変形がより一層抑制される。 In one embodiment, the end portion of the first fiber reinforced member includes a plurality of the first fiber reinforced rod members recessed with respect to an end surface of the surrounding first fiber reinforced rod member. A first recess is formed, and a plurality of the second fiber reinforced members are formed at the end portion of the second fiber reinforced member by the at least one second fiber reinforced rod member protruding relative to an end surface of the surrounding second fiber reinforced rod member. The second convex portion is formed, and in the butting step, the second convex portion is fitted into the plurality of first concave portions, respectively.
Thus, by providing a plurality of first recesses in the first fiber reinforced composite member, the number of places where the first fiber reinforced composite member and the second fiber reinforced composite member are fitted increases, and the compressive strength can be further increased. . That is, the contact part of the wall surface of a 1st recessed part and the upper and lower surfaces of a 2nd convex part with the increase in the fitting location of the 1st recessed part of a 1st fiber reinforced member, and the 2nd convex part of a 2nd fiber reinforced member. Since the area of the contact portion (including the contact portion through the resin) is increased, the deformation of the joined body in the out-of-plane direction is further suppressed.

一実施形態では、前記周囲の前記第１繊維強化ロッド部材によって少なくとも一つの第１凸部が形成されており、前記周囲の前記第２繊維強化ロッド部材によって少なくとも一つの第２凹部が形成されており、前記突合せステップでは、前記第１繊維強化複合部材の前記第１凸部を前記第２繊維強化複合部材の前記第２凹部を嵌め合わせるようになっている。
このように、第１繊維強化ロッド部材にも第２繊維強化複合部材側に突出した第１凸部が設けられ、これに対応して第２繊維強化複合部材に第２凹部が設けられていることで、第１繊維強化複合部材と第２繊維強化複合部材とが嵌合する箇所が更に増加し、圧縮強度の更なる向上が図れる。すなわち、第１繊維強化部材の第１凸部と第２繊維強化部材の第２凹部とを追加的に嵌合させることで、第１凹部の壁面と第２凸部の上下面との接触部だけでなく、第２凹部の壁面と第１凸部の上下面との接触部が接合体の面外方向への変形抑制に寄与するようになる。 In one embodiment, at least one first convex portion is formed by the surrounding first fiber reinforced rod member, and at least one second concave portion is formed by the surrounding second fiber reinforced rod member. In the butting step, the first convex portion of the first fiber reinforced composite member is fitted to the second concave portion of the second fiber reinforced composite member.
Thus, the 1st fiber reinforced rod member is also provided with the 1st convex part which projected to the 2nd fiber reinforced composite member side, and the 2nd crevice is provided in the 2nd fiber reinforced composite member corresponding to this. Thereby, the location where the 1st fiber reinforced composite member and the 2nd fiber reinforced composite member fit further increases, and the further improvement in compressive strength can be aimed at. That is, the contact portion between the wall surface of the first concave portion and the upper and lower surfaces of the second convex portion by additionally fitting the first convex portion of the first fiber reinforced member and the second concave portion of the second fiber reinforced member. In addition, the contact portion between the wall surface of the second concave portion and the upper and lower surfaces of the first convex portion contributes to suppression of deformation in the out-of-plane direction of the joined body.

一実施形態において、前記第１繊維強化部材の端部には、前記第１繊維強化部材の厚さ方向に関して前記第１凹部と前記第１凸部とが交互に設けられ、前記第２繊維強化部材の端部には、前記第２繊維強化部材の厚さ方向に関して前記第２凹部と前記第２凸部とが交互に設けられる。
これにより、接合体の厚さ方向に関して、第１凹部の壁面と第２凸部の上下面との接触部と、第２凹部の壁面と第１凸部の上下面との接触部とを多層に形成することができる。よって、接合体の厚さ方向における各接触部の数を増やすことで、第１繊維強化複合部材と第２繊維強化複合部材の接合部の幅方向サイズにかかわらず、接合体の面外方向への変形抑制に寄与しうる前記接触部の面積を任意に増大させることができる。 In one embodiment, an end portion of the first fiber reinforced member is provided with the first concave portion and the first convex portion alternately in the thickness direction of the first fiber reinforced member, and the second fiber reinforced member is provided. The second concave portion and the second convex portion are alternately provided in the end portion of the member in the thickness direction of the second fiber reinforced member.
Thereby, in the thickness direction of the joined body, the contact portion between the wall surface of the first concave portion and the upper and lower surfaces of the second convex portion, and the contact portion between the wall surface of the second concave portion and the upper and lower surfaces of the first convex portion are multilayered. Can be formed. Therefore, by increasing the number of each contact portion in the thickness direction of the joined body, regardless of the size in the width direction of the joined portion of the first fiber reinforced composite member and the second fiber reinforced composite member, in the out-of-plane direction of the joined body. The area of the contact portion that can contribute to the suppression of deformation can be arbitrarily increased.

幾つかの実施形態において、前記第１繊維強化部材を形成する複数の前記第１繊維強化ロッド部材は、前記第１繊維強化複合部材の基部側において互いに結合されており、前記第１繊維強化複合部材の前記端部側において互いに拘束されておらず、前記第２繊維強化部材を形成する複数の前記第２繊維強化ロッド部材は、前記第２繊維強化複合部材の基部側において互いに結合されており、前記第２繊維強化複合部材の前記端部側において互いに拘束されていない。
これにより、互いに嵌合する第１繊維強化複合部材及び第２繊維強化複合部材の端部に可撓性を持たせることができるので、各凸部とこれに対応する凹部との位置とが多少ずれていても、端部同士を容易に嵌合させることが可能となる。 In some embodiments, the plurality of first fiber reinforced rod members forming the first fiber reinforced member are coupled to each other on the base side of the first fiber reinforced composite member, and the first fiber reinforced composite The plurality of second fiber reinforced rod members that are not constrained to each other on the end side of the member and form the second fiber reinforced member are coupled to each other on the base side of the second fiber reinforced composite member. The second fiber reinforced composite member is not constrained to each other on the end side.
Thereby, since the end part of the 1st fiber reinforced composite member and the 2nd fiber reinforced composite member which fit mutually can be given flexibility, the position of each convex part and the concave part corresponding to this is somewhat. Even if they are misaligned, the ends can be easily fitted together.

本発明の少なくとも一実施形態に係る繊維強化複合部材の接合体は、
樹脂及び繊維束を含む第１繊維強化ロッド部材の集合である第１繊維強化複合部材と、
樹脂及び繊維束を含む第２繊維強化ロッド部材の集合であり、前記第１繊維強化複合部材に接合される第２繊維強化複合部材と、を備え、
少なくとも一本の前記第１繊維強化ロッド部材の端面が周囲の前記第１繊維強化ロッド部材の端面に対して窪み、前記第１繊維強化複合部材の前記端部には前記少なくとも一本の前記第１繊維強化ロッド部材によって第１凹部が形成されており、
少なくとも一本の前記第２繊維強化ロッド部材の端面が周囲の前記第２繊維強化ロッド部材の端面に対して突出し、前記第２繊維強化複合部材の前記端部には前記少なくとも一本の前記第２繊維強化ロッド部材によって第２凸部が形成されており、
前記第１繊維強化複合部材の前記第１凹部に前記第２繊維強化複合部材の前記第２凸部が嵌合するように、前記第１繊維強化複合部材と前記第２繊維強化複合部材の端部同士が突き合わされて接合されている。 The joined body of the fiber-reinforced composite member according to at least one embodiment of the present invention,
A first fiber-reinforced composite member that is a set of first fiber-reinforced rod members including a resin and a fiber bundle;
A second fiber reinforced composite member that is a set of second fiber reinforced rod members including a resin and a fiber bundle, and is joined to the first fiber reinforced composite member,
The end surface of at least one first fiber reinforced rod member is recessed with respect to the end surface of the surrounding first fiber reinforced rod member, and the end portion of the first fiber reinforced composite member has the at least one first fiber reinforced rod member. 1st recessed part is formed of 1 fiber reinforced rod member,
At least one end face of the second fiber reinforced rod member protrudes from an end face of the surrounding second fiber reinforced rod member, and the end portion of the second fiber reinforced composite member has the at least one second end. The 2nd convex part is formed with 2 fiber reinforced rod members,
The ends of the first fiber reinforced composite member and the second fiber reinforced composite member so that the second convex portion of the second fiber reinforced composite member is fitted in the first concave portion of the first fiber reinforced composite member. The parts are butted together and joined.

上記繊維強化複合部材の接合体は、第１繊維強化複合部材の第１凹部に第２繊維強化複合部材の第２凸部が嵌合するように、第１繊維強化複合部材と第２繊維強化複合部材の端部同士が突き合わされて接合されているので、圧縮応力が加わっても面外方向へ座屈しにくい構造とすることができ、接合部における圧縮強度を高く維持できる。よって、補強材の有無にかかわらず、繊維強化複合部材の接合構造自体が高い圧縮強度の実現に寄与し、結果的に繊維強化複合部材の接合による強度信頼性の低下を抑制できる。また、第１繊維強化複合部材又は第２繊維強化複合部材は、それぞれ、樹脂及び繊維束を含む第１繊維強化ロッド部材又は第２繊維強化ロッド部材の集合によって構成されるため、第１凹部又は第２凸部を容易に形成できる。さらに、第１繊維強化ロッド部材又は第２繊維強化ロッド部材の端部長さをそれぞれ調整することで、所望の位置に所望の形状・サイズの第１凹部又は第２凸部を得ることができる。   The joined body of the fiber reinforced composite member has the first fiber reinforced composite member and the second fiber reinforced so that the second convex portion of the second fiber reinforced composite member is fitted into the first concave portion of the first fiber reinforced composite member. Since the end portions of the composite member are abutted and joined to each other, it is possible to make the structure difficult to buckle in the out-of-plane direction even when compressive stress is applied, and the compressive strength at the joined portion can be maintained high. Therefore, regardless of the presence or absence of the reinforcing material, the joint structure itself of the fiber reinforced composite member contributes to the realization of a high compressive strength, and as a result, a decrease in strength reliability due to the joining of the fiber reinforced composite member can be suppressed. Further, since the first fiber reinforced composite member or the second fiber reinforced composite member is constituted by a set of the first fiber reinforced rod member or the second fiber reinforced rod member including the resin and the fiber bundle, respectively, A 2nd convex part can be formed easily. Furthermore, the 1st recessed part or 2nd convex part of a desired shape and size can be obtained in a desired position by adjusting the edge part length of a 1st fiber reinforced rod member or a 2nd fiber reinforced rod member, respectively.

本発明の少なくとも一実施形態に係る風車翼の製造方法は、
外皮材と、翼長方向に延在して設けられるスパーキャップとを含む風車翼の製造方法であって、
前記スパーキャップが、樹脂及び繊維束を含む第１繊維強化ロッド部材の集合である第１繊維強化複合部材と、樹脂及び繊維束を含む第２繊維強化ロッド部材の集合である第２繊維強化複合部材と含み、
前記第１繊維強化複合部材の端部と、前記第２繊維強化複合部材の端部とを突き合わせる突合せステップと、
前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部とを接合する接合ステップと、を備え、
少なくとも一本の前記第１繊維強化ロッド部材の端面が周囲の前記第１繊維強化ロッド部材の端面に対して窪み、前記第１繊維強化複合部材の前記端部には前記少なくとも一本の前記第１繊維強化ロッド部材によって第１凹部が形成されており、
少なくとも一本の前記第２繊維強化ロッド部材の端面が周囲の前記第２繊維強化ロッド部材の端面に対して突出し、前記第２繊維強化複合部材の前記端部には前記少なくとも一本の前記第２繊維強化ロッド部材によって第２凸部が形成されており、
前記突合せステップでは、前記第１繊維強化複合部材の前記第１凹部に前記第２繊維強化複合部材の前記第２凸部を嵌め合わせ、
前記接合ステップでは、前記第１繊維強化複合部材と前記第２繊維強化複合部材の端部同士を突き合わせた状態で、前記前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部との間の隙間に樹脂を注入し、該樹脂を硬化させることを特徴とする。 A method for manufacturing a wind turbine blade according to at least one embodiment of the present invention includes:
A method of manufacturing a wind turbine blade including an outer skin material and a spar cap provided to extend in the blade length direction,
The spar cap is a first fiber reinforced composite member that is a set of first fiber reinforced rod members that include a resin and a fiber bundle, and a second fiber reinforced composite that is a set of second fiber reinforced rod members that include a resin and a fiber bundle. Including parts,
A butting step of abutting the end of the first fiber reinforced composite member and the end of the second fiber reinforced composite member;
Joining the end of the first fiber reinforced composite member and the end of the second fiber reinforced composite member; and
The end surface of at least one first fiber reinforced rod member is recessed with respect to the end surface of the surrounding first fiber reinforced rod member, and the end portion of the first fiber reinforced composite member has the at least one first fiber reinforced rod member. 1st recessed part is formed of 1 fiber reinforced rod member,
At least one end face of the second fiber reinforced rod member protrudes from an end face of the surrounding second fiber reinforced rod member, and the end portion of the second fiber reinforced composite member has the at least one second end. The 2nd convex part is formed with 2 fiber reinforced rod members,
In the butting step, the second convex portion of the second fiber-reinforced composite member is fitted into the first concave portion of the first fiber-reinforced composite member,
In the joining step, the end portion of the first fiber reinforced composite member and the second fiber reinforced composite member in a state where the end portions of the first fiber reinforced composite member and the second fiber reinforced composite member are abutted with each other. A resin is injected into a gap between the end portions of the resin and the resin is cured.

一般的な風車翼には、繊維強化複合部材で構成されるスパーキャップを含むものがある。このスパーキャップは翼長方向に長尺であるため、輸送や製造歩留まり向上の観点から分割構造の採用が求められている。しかし、スパーキャップは風車翼の強度部材として機能するため、強度信頼性を高く維持しながら分割部材同士を接合する必要があった。
上記風車翼の製造方法は、スパーキャップの構成部材である第１繊維強化複合部材と第２繊維強化複合部材の端部同士を突き合わせる突合せステップと、突き合わせた端部を接合する接合ステップとを含む。そして、突合わせステップでは、第１繊維強化複合部材の第１凹部に第２繊維強化複合部材の第２凸部を嵌め合わせ、接合ステップにおいて、第１繊維強化複合部材の端部と第２繊維強化複合部材の端部との間の隙間に樹脂を注入し、樹脂を硬化させることによって、第１繊維強化複合部材と第２繊維強化複合部材とを接合するようにしている。これにより、圧縮応力が加わっても面外方向へ座屈しにくい構造とすることができ、接合部における圧縮強度を高く維持できる。よって、補強材の有無にかかわらず、繊維強化複合部材の接合構造自体が高い圧縮強度の実現に寄与し、結果的に繊維強化複合部材の接合による強度信頼性の低下を抑制できる。また、第１繊維強化複合部材又は第２繊維強化複合部材は、それぞれ、樹脂及び繊維束を含む第１繊維強化ロッド部材又は第２繊維強化ロッド部材の集合によって構成されるため、第１凹部又は第２凸部を容易に形成できる。さらに、第１繊維強化ロッド部材又は第２繊維強化ロッド部材の端部長さをそれぞれ調整することで、所望の位置に所望の形状・サイズの第１凹部又は第２凸部を得ることができる。 Some typical wind turbine blades include a spar cap formed of a fiber-reinforced composite member. Since this spar cap is long in the blade length direction, it is required to adopt a split structure from the viewpoint of transportation and production yield improvement. However, since the spar cap functions as a strength member of the wind turbine blade, it is necessary to join the divided members while maintaining high strength reliability.
The wind turbine blade manufacturing method includes a butting step of butting the ends of the first fiber reinforced composite member and the second fiber reinforced composite member, which are constituent members of the spar cap, and a joining step of joining the butted ends. Including. In the butt step, the second convex portion of the second fiber reinforced composite member is fitted into the first concave portion of the first fiber reinforced composite member, and in the joining step, the end portion of the first fiber reinforced composite member and the second fiber The first fiber reinforced composite member and the second fiber reinforced composite member are joined by injecting resin into the gap between the ends of the reinforced composite member and curing the resin. Thereby, it can be set as the structure which is hard to buckle to an out-of-plane direction even if compressive stress is added, and the compressive strength in a junction part can be maintained high. Therefore, regardless of the presence or absence of the reinforcing material, the joint structure itself of the fiber reinforced composite member contributes to the realization of a high compressive strength, and as a result, a decrease in strength reliability due to the joining of the fiber reinforced composite member can be suppressed. Further, since the first fiber reinforced composite member or the second fiber reinforced composite member is constituted by a set of the first fiber reinforced rod member or the second fiber reinforced rod member including the resin and the fiber bundle, respectively, A 2nd convex part can be formed easily. Furthermore, the 1st recessed part or 2nd convex part of a desired shape and size can be obtained in a desired position by adjusting the edge part length of a 1st fiber reinforced rod member or a 2nd fiber reinforced rod member, respectively.

本発明の少なくとも一実施形態によれば、補強材の有無にかかわらず、繊維強化複合部材の接合構造自体が高い圧縮強度の実現に寄与し、結果的に繊維強化複合部材の接合による強度信頼性の低下を抑制できる。   According to at least one embodiment of the present invention, regardless of the presence or absence of a reinforcing material, the bonding structure itself of the fiber reinforced composite member contributes to the realization of high compressive strength, and as a result, the strength reliability due to the bonding of the fiber reinforced composite member Can be suppressed.

一実施形態に係る繊維強化複合部材の接合体を示す斜視図である。It is a perspective view which shows the conjugate | zygote of the fiber reinforced composite member which concerns on one Embodiment. 一実施形態に係る繊維強化複合部材の接合方法における手順を示す図である。It is a figure which shows the procedure in the joining method of the fiber reinforced composite member which concerns on one Embodiment. 一実施形態に係る繊維強化複合部材の構成例を示す斜視図である。It is a perspective view which shows the structural example of the fiber reinforced composite member which concerns on one Embodiment. 第１変形例に係る繊維強化複合部材の接合体を説明するための図である。It is a figure for demonstrating the conjugate | zygote of the fiber reinforced composite member which concerns on a 1st modification. 第２変形例に係る繊維強化複合部材の接合体を説明するための図である。It is a figure for demonstrating the conjugate | zygote of the fiber reinforced composite member which concerns on a 2nd modification. 第３変形例に係る繊維強化複合部材の接合体を説明するための図である。It is a figure for demonstrating the conjugate | zygote of the fiber reinforced composite member which concerns on a 3rd modification. 一実施形態に係る風車の全体構成を示す概略図である。It is the schematic which shows the whole structure of the windmill concerning one Embodiment. 一実施形態に係る風車翼を示す断面図である。It is sectional drawing which shows the windmill blade which concerns on one Embodiment.

以下、添付図面に従って本発明の実施形態について説明する。ただし、実施形態として以下に記載され、あるいは、実施形態として図面で示された構成部品の寸法、材質、形状、その相対的配置等は、本発明の範囲をこれに限定する趣旨ではなく、単なる説明例にすぎない。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described below as the embodiments or shown in the drawings as the embodiments are not intended to limit the scope of the present invention. It is just an example.

図１は一実施形態に係る繊維強化複合部材の接合体を示す斜視図である。図２は一実施形態に係る繊維強化複合部材の接合方法における手順を示す図である。
図１及び図２に示すように、幾つかの実施形態における繊維強化複合部材の接合体１は、第１繊維強化複合部材１０と、第２繊維強化複合部材２０とを含み、これらの繊維強化複合部材１０，２０の端面が互いに接合された構成を有している。 FIG. 1 is a perspective view showing a joined body of fiber-reinforced composite members according to an embodiment. FIG. 2 is a diagram illustrating a procedure in a method for joining fiber-reinforced composite members according to an embodiment.
As shown in FIGS. 1 and 2, a bonded body 1 of fiber reinforced composite members in some embodiments includes a first fiber reinforced composite member 10 and a second fiber reinforced composite member 20, and these fiber reinforced composites. The end faces of the composite members 10 and 20 are joined together.

第１繊維強化複合部材１０は、樹脂及び繊維束を含む第１繊維強化ロッド部材１１の集合である。具体的に、第１繊維強化複合部材１０は、複数の第１繊維強化ロッド部材１１が一方向に配列された構成を有しており、少なくとも２本以上の第１繊維強化ロッド部材１１が幅方向及び厚さ方向にそれぞれ配列されていてもよい。なお、第１繊維強化ロッド部材１１は、第１繊維強化複合部材１０の繊維方向に延在してもよい。また、複数の第１繊維強化ロッド部材１１は、少なくとも一部が樹脂によって互いに結合され、一体化された構成となっている。第１繊維強化複合部材１０は、樹脂が半硬化状態のプリプレグ材であってもよいし、樹脂が完全に硬化した繊維強化複合部材であってもよい。   The first fiber reinforced composite member 10 is a set of first fiber reinforced rod members 11 including a resin and a fiber bundle. Specifically, the first fiber reinforced composite member 10 has a configuration in which a plurality of first fiber reinforced rod members 11 are arranged in one direction, and at least two or more first fiber reinforced rod members 11 have a width. You may arrange in a direction and thickness direction, respectively. The first fiber reinforced rod member 11 may extend in the fiber direction of the first fiber reinforced composite member 10. In addition, the plurality of first fiber reinforced rod members 11 have an integrated configuration in which at least a part thereof is coupled to each other by a resin. The first fiber reinforced composite member 10 may be a prepreg material in which the resin is semi-cured, or may be a fiber reinforced composite member in which the resin is completely cured.

第２繊維強化複合部材２０は、樹脂及び繊維束を含む第２繊維強化ロッド部材２１の集合であり、第１繊維強化複合部材１０に接合されるようになっている。具体的に、第２繊維強化複合部材２０は、複数の第２繊維強化ロッド部材２１が一方向に配列された構成を有しており、少なくとも２本以上の第２繊維強化ロッド部材２１が幅方向及び厚さ方向にそれぞれ配列されていてもよい。なお、第２繊維強化ロッド部材２１は、第２繊維強化複合部材２０の繊維方向に延在してもよい。また、複数の第２繊維強化ロッド部材２１は、少なくとも一部が樹脂によって互いに結合され、一体化された構成となっている。第２繊維強化複合部材２０は、樹脂が半硬化状態のプリプレグ材であってもよいし、樹脂が完全に硬化した繊維強化複合部材であってもよい。   The second fiber reinforced composite member 20 is a set of second fiber reinforced rod members 21 including a resin and a fiber bundle, and is joined to the first fiber reinforced composite member 10. Specifically, the second fiber reinforced composite member 20 has a configuration in which a plurality of second fiber reinforced rod members 21 are arranged in one direction, and at least two or more second fiber reinforced rod members 21 have a width. You may arrange in a direction and thickness direction, respectively. The second fiber reinforced rod member 21 may extend in the fiber direction of the second fiber reinforced composite member 20. In addition, the plurality of second fiber reinforced rod members 21 have an integrated configuration in which at least a part is coupled to each other with resin. The second fiber reinforced composite member 20 may be a prepreg material in which the resin is in a semi-cured state, or may be a fiber reinforced composite member in which the resin is completely cured.

第１繊維強化複合部材１０又は第２繊維強化複合部材２０における強化繊維としては、例えば炭素繊維やガラス繊維が用いられる。
第１繊維強化ロッド部材１１又は第２繊維強化ロッド部材２１は、一方向に引き揃えられた複数の強化繊維が樹脂によって一体化された繊維束を含む。また、第１繊維強化ロッド部材１１又は第２繊維強化ロッド部材２１の断面は、円形又は楕円形であってもよいし、方形（角が直線状に又は曲率を有するように切り欠かれた方形を含む）であってもよい。 As the reinforcing fiber in the first fiber reinforced composite member 10 or the second fiber reinforced composite member 20, for example, carbon fiber or glass fiber is used.
The first fiber reinforced rod member 11 or the second fiber reinforced rod member 21 includes a fiber bundle in which a plurality of reinforcing fibers aligned in one direction are integrated with a resin. In addition, the cross section of the first fiber reinforced rod member 11 or the second fiber reinforced rod member 21 may be circular or elliptical, or square (a square cut out so that the corners are linear or have a curvature). May be included).

一実施形態における各繊維強化複合部材１０，２０は、さらに以下の構成を有する。
第１繊維強化複合部材１０において、少なくとも一本の第１繊維強化ロッド部材１１の端面１６ａが周囲の第１繊維強化ロッド部材１１の端面１５ａに対して窪んでいる。これにより、第１繊維強化複合部材１０の端部には、少なくとも一本の第１繊維強化ロッド部材１１によって、端面１６ａを有する第１凹部１６が形成されている。
同様に、第２繊維強化複合部材２０において、少なくとも一本の第２繊維強化ロッド部材２１の端面２５ａが周囲の第２繊維強化ロッド部材２１の端面２６ａに対して突出している。これにより、第２繊維強化複合部材２０の端部には、少なくとも一本の第２繊維強化ロッド部材２１によって、端面２５ａを有する第２凸部２５が形成されている。
そして、繊維強化複合部材の接合体１は、第１繊維強化複合部材１１の第１凹部１６に第２繊維強化複合部材２１の第２凸部２５が嵌合するように、第１繊維強化複合部材１０と第２繊維強化複合部材２０の端部同士が突き合わされて接合された構成となっている。この接合体１では、第１凹部１６の端面１６ａと第２凸部２５の端面２５ａとは対向して位置している。端面１６ａと端面２５ａとは互いに接触するように位置してもよいし、端面１６ａと端面２５ａとの間に間隙が存在するようにそれぞれが位置してもよい。後者の場合、端面１６ａと端面２５ａとの間の間隙には樹脂が充填される。なお、第１凹部１６又は第２凸部２５は、第１繊維強化ロッド部材１１又は第２繊維強化ロッド部材２１の一本分以上の径を有していてもよい。 Each fiber reinforced composite member 10, 20 in one embodiment further has the following configuration.
In the first fiber reinforced composite member 10, the end surface 16 a of at least one first fiber reinforced rod member 11 is recessed with respect to the end surface 15 a of the surrounding first fiber reinforced rod member 11. Thereby, the 1st recessed part 16 which has the end surface 16a is formed in the edge part of the 1st fiber reinforced composite member 10 by the at least 1 1st fiber reinforced rod member 11. FIG.
Similarly, in the second fiber reinforced composite member 20, at least one end face 25 a of the second fiber reinforced rod member 21 protrudes from the end face 26 a of the surrounding second fiber reinforced rod member 21. As a result, at the end of the second fiber reinforced composite member 20, the second convex portion 25 having the end face 25a is formed by at least one second fiber reinforced rod member 21.
And the joined body 1 of the fiber reinforced composite member includes the first fiber reinforced composite so that the second convex portion 25 of the second fiber reinforced composite member 21 is fitted into the first concave portion 16 of the first fiber reinforced composite member 11. The ends of the member 10 and the second fiber reinforced composite member 20 are abutted and joined. In this joined body 1, the end surface 16 a of the first concave portion 16 and the end surface 25 a of the second convex portion 25 are located facing each other. The end surface 16a and the end surface 25a may be positioned so as to contact each other, or may be positioned such that there is a gap between the end surface 16a and the end surface 25a. In the latter case, the gap is filled with resin between the end surface 16a and the end surface 25a. In addition, the 1st recessed part 16 or the 2nd convex part 25 may have the diameter more than the one of the 1st fiber reinforced rod member 11 or the 2nd fiber reinforced rod member 21. FIG.

一実施形態において、第１繊維強化複合部材１０の端部には複数の第１凹部１６が形成され、第２繊維強化複合部材２０の端部には複数の第２凸部２５が形成されている。そして、接合体１は、複数の第１凹部１６と複数の第２凸部２５とがそれぞれ嵌め合されて接合された構成となっている。
このように、第１繊維強化複合部材１０に複数の第１凹部１６を設けることにより、第１繊維強化複合部材１０と第２繊維強化複合部材２０とが嵌合する箇所が増え、より一層圧縮強度を高くできる。すなわち、第１繊維強化部材１０の第１凹部１６と第２繊維強化部材２０の第２凸部２５との嵌合箇所の増加に伴って、第１凹部１６の壁面と第２凸部２５の上下面との接触部（樹脂を介した接触部も含む。）の面積が増大するので、接合体１の面外方向への変形がより一層抑制される。 In one embodiment, a plurality of first recesses 16 are formed at the end of the first fiber reinforced composite member 10, and a plurality of second protrusions 25 are formed at the end of the second fiber reinforced composite member 20. Yes. The joined body 1 has a configuration in which a plurality of first concave portions 16 and a plurality of second convex portions 25 are fitted and joined.
Thus, by providing the 1st fiber reinforced composite member 10 with the several 1st recessed part 16, the location where the 1st fiber reinforced composite member 10 and the 2nd fiber reinforced composite member 20 fit increases, and it compresses further. Strength can be increased. That is, with the increase of the fitting location of the 1st recessed part 16 of the 1st fiber reinforced member 10, and the 2nd convex part 25 of the 2nd fiber reinforced member 20, the wall surface of the 1st recessed part 16 and the 2nd convex part 25 are increased. Since the area of the contact portion (including the contact portion through the resin) with the upper and lower surfaces is increased, the deformation of the joined body 1 in the out-of-plane direction is further suppressed.

一実施形態において、接合体１は、第１繊維強化複合部材１０の第１凸部１５と第２繊維強化複合部材２０の第２凹部２６とが嵌め合されて接合された構成となっている。
すなわち、第１繊維強化複合部材１０の端部には、第１凹部１６の周囲の少なくとも一本の第１繊維強化ロッド部材１１によって、少なくとも一つの第１凸部１５が形成されている。
同様に、第２繊維強化複合部材２０の端部には、第２凸部２５の周囲の少なくとも一本の第２繊維強化ロッド部材２１によって、少なくとも一つの第２凹部２６が形成されている。
そして、繊維強化複合部材の接合体１は、第１繊維強化複合部材１１の第１凹部１６に第２繊維強化複合部材２１の第２凸部２５が嵌合するとともに、第１繊維強化複合部材１１の第１凸部１５に第２繊維強化複合部材２１の第２凹部２６が嵌合した状態で、樹脂によって結合された構成となっている。この接合体１では、第１凹部１６の端面１６ａと第２凸部２５の端面２５ａ、及び、第１凸部１５の端面１５ａと第２凹部２６の端面２６ａが、それぞれ対向して位置している。端面１６ａと端面２５ａ又は端面１５ａと端面２６ａは互いに接触するように位置してもよいし、端面１６ａと端面２５ａの間又は端面１５ａと端面２６ａの間に間隙が存在するようにそれぞれが位置してもよい。後者の場合、端面１６ａと端面２５ａの間又は端面１５ａと端面２６ａの間の間隙には樹脂が充填される。 In one embodiment, the joined body 1 has a configuration in which the first convex portion 15 of the first fiber-reinforced composite member 10 and the second concave portion 26 of the second fiber-reinforced composite member 20 are fitted and joined. .
That is, at least one first convex portion 15 is formed at the end portion of the first fiber reinforced composite member 10 by at least one first fiber reinforced rod member 11 around the first concave portion 16.
Similarly, at least one second concave portion 26 is formed at the end of the second fiber reinforced composite member 20 by at least one second fiber reinforced rod member 21 around the second convex portion 25.
And the joined body 1 of a fiber reinforced composite member is fitted with the second convex part 25 of the second fiber reinforced composite member 21 in the first concave part 16 of the first fiber reinforced composite member 11, and the first fiber reinforced composite member. In this state, the second concave portion 26 of the second fiber-reinforced composite member 21 is fitted to the first convex portion 15 of the eleventh, and is joined by resin. In this joined body 1, the end surface 16a of the first concave portion 16 and the end surface 25a of the second convex portion 25, and the end surface 15a of the first convex portion 15 and the end surface 26a of the second concave portion 26 are positioned to face each other. Yes. The end surface 16a and the end surface 25a or the end surface 15a and the end surface 26a may be positioned so as to contact each other, or are positioned so that there is a gap between the end surface 16a and the end surface 25a or between the end surface 15a and the end surface 26a. May be. In the latter case, the gap is filled between the end face 16a and the end face 25a or between the end face 15a and the end face 26a.

このように、第１繊維強化ロッド部材１１にも第２繊維強化複合部材２０側に突出した第１凸部１５が設けられ、これに対応して第２繊維強化複合部材２０に第２凹部２６が設けられていることで、第１繊維強化複合部材１０と第２繊維強化複合部材２０とが嵌合する箇所が更に増加し、圧縮強度の更なる向上が図れる。すなわち、第１繊維強化部材１０の第１凸部１５と第２繊維強化部材２０の第２凹部２６とを追加的に嵌合させることで、第１凹部１６の壁面と第２凸部２５の上下面との接触部だけでなく、第２凹部２６の壁面と第１凸部１５の上下面との接触部が接合体の面外方向への変形抑制に寄与するようになる。   Thus, the 1st fiber reinforced rod member 11 is also provided with the 1st convex part 15 projected to the 2nd fiber reinforced composite member 20 side, and the 2nd crevice 26 is provided in the 2nd fiber reinforced composite member 20 corresponding to this. Is provided, the number of places where the first fiber reinforced composite member 10 and the second fiber reinforced composite member 20 are fitted further increases, and the compressive strength can be further improved. That is, by additionally fitting the first convex portion 15 of the first fiber reinforced member 10 and the second concave portion 26 of the second fiber reinforced member 20, the wall surface of the first concave portion 16 and the second convex portion 25. Not only the contact portion with the upper and lower surfaces but also the contact portion between the wall surface of the second concave portion 26 and the upper and lower surfaces of the first convex portion 15 contributes to suppression of deformation in the out-of-plane direction of the joined body.

一実施形態において、第１繊維強化部材１０の端部には、第１繊維強化部材１０の厚さ方向に関して第１凹部１６と第１凸部１５とが交互に設けられ、第２繊維強化部材２０の端部には、第２繊維強化部材２０の厚さ方向に関して第２凹部２６と第２凸部２５とが交互に設けられる。図１及び図２に示す例では、第１繊維強化複合部材１０の幅方向及び厚さ方向に、それぞれ、一本分の第１繊維強化ロッド部材１１に対応した第１凹部１６と第１凸部１５とが交互に配置された構成となっている。同様に、第２繊維強化複合部材２０の幅方向及び厚さ方向に、それぞれ、一本分の第２繊維強化ロッド部材２１に対応した第２凸部２５と第１凹部１６とが交互に配置された構成となっている。   In one embodiment, the first fiber reinforced member 10 is alternately provided with first concave portions 16 and first convex portions 15 in the thickness direction of the first fiber reinforced member 10 at the end portion of the first fiber reinforced member 10. The second concave portions 26 and the second convex portions 25 are alternately provided at the end portion 20 in the thickness direction of the second fiber reinforced member 20. In the example shown in FIG.1 and FIG.2, the 1st recessed part 16 and the 1st convex corresponding to the 1st fiber reinforced rod member 11 for one each in the width direction and thickness direction of the 1st fiber reinforced composite member 10, respectively. The parts 15 are arranged alternately. Similarly, the 2nd convex part 25 and the 1st recessed part 16 corresponding to the 2nd fiber reinforced rod member 21 for one each are alternately arrange | positioned in the width direction and thickness direction of the 2nd fiber reinforced composite member 20, respectively. It has been configured.

上記構成により、接合体１の厚さ方向に関して、第１凹部１６の壁面と第２凸部２５の上下面との接触部と、第２凹部２６の壁面と第１凸部１５の上下面との接触部とを多層に形成することができる。よって、接合体１の厚さ方向における各接触部の数を増やすことで、第１繊維強化複合部材１０と第２繊維強化複合部材２０の接合部の幅方向サイズにかかわらず、接合体１の面外方向への変形抑制に寄与しうる接触部の面積を任意に増大させることができる。   With the above configuration, with respect to the thickness direction of the joined body 1, the contact portion between the wall surface of the first concave portion 16 and the upper and lower surfaces of the second convex portion 25, the wall surface of the second concave portion 26, and the upper and lower surfaces of the first convex portion 15 The contact portion can be formed in multiple layers. Therefore, by increasing the number of each contact part in the thickness direction of the joined body 1, regardless of the width direction size of the joined part of the first fiber reinforced composite member 10 and the second fiber reinforced composite member 20, The area of the contact portion that can contribute to the suppression of deformation in the out-of-plane direction can be arbitrarily increased.

図３は、一実施形態に係る繊維強化複合部材の構成例を示す斜視図である。
図３に示すように、一実施形態において、第１繊維強化部材１０を形成する複数の第１繊維強化ロッド部材１１は、第１繊維強化複合部材１０の基部１０ｂ側において互いに結合されており、第１繊維強化複合部材１０の端部１０ａ側において互いに拘束されていない。具体的には、第１凹部１６の端面１６ａから基部１０ｂ側へ距離ｄだけ離れた位置に、互いに拘束された部位と互いに拘束されていない部位との境界１７が設けられてもよい。この距離ｄは０を含む（すなわち境界１７が端面１６ａと一致する）。例えば、第１繊維強化複合部材１０の製造時に、複数の第１繊維強化ロッド部材１１を並べて配置した後、第１繊維強化複合部材１０の端部１０ａ側に樹脂が侵入しないようにして基部１０ｂ側にのみ樹脂を注入し、硬化又は半硬化させる。これにより、第１繊維強化複合部材１０の端部１０ａは第１繊維強化ロッド部材１１が露出した状態となり、端部１０ａの可撓性は維持される。 FIG. 3 is a perspective view illustrating a configuration example of a fiber-reinforced composite member according to an embodiment.
As shown in FIG. 3, in one embodiment, the plurality of first fiber reinforced rod members 11 forming the first fiber reinforced member 10 are coupled to each other on the base 10 b side of the first fiber reinforced composite member 10. The first fiber reinforced composite member 10 is not restrained on the end 10a side. Specifically, a boundary 17 between a portion constrained to each other and a portion not constrained to each other may be provided at a position separated from the end surface 16a of the first recess 16 by the distance d toward the base portion 10b. This distance d includes 0 (that is, the boundary 17 coincides with the end face 16a). For example, at the time of manufacturing the first fiber reinforced composite member 10, after arranging the plurality of first fiber reinforced rod members 11 side by side, the base 10 b is prevented from entering the end 10 a side of the first fiber reinforced composite member 10. Resin is injected only on the side and cured or semi-cured. Thereby, the edge part 10a of the 1st fiber reinforced composite member 10 will be in the state which the 1st fiber reinforced rod member 11 exposed, and the flexibility of the edge part 10a is maintained.

同様に、図３では図示を省略しているが、第２繊維強化部材２０を形成する複数の第２繊維強化ロッド部材２１は、第２繊維強化複合部材２０の基部側において互いに結合されており、第２繊維強化複合部材２０の端部側において互いに拘束されていない。なお、第２繊維強化複合部材２０においても、上述の第１繊維強化複合部材１０と同様の構成を採用できる。   Similarly, although not shown in FIG. 3, the plurality of second fiber reinforced rod members 21 forming the second fiber reinforced member 20 are coupled to each other on the base side of the second fiber reinforced composite member 20. The second fiber reinforced composite member 20 is not restrained on the end side. Note that the second fiber reinforced composite member 20 can employ the same configuration as that of the first fiber reinforced composite member 10 described above.

このような構成とすることにより、互いに嵌合する第１繊維強化複合部材１０及び第２繊維強化複合部材２０の端部に可撓性を持たせることができるので、各凸部１５，２５とこれに対応する凹部２６，１６との位置とが多少ずれていても、端部同士を容易に嵌合させることが可能となる。   By adopting such a configuration, the end portions of the first fiber reinforced composite member 10 and the second fiber reinforced composite member 20 that are fitted to each other can be made flexible. Even if the positions of the corresponding concave portions 26 and 16 are slightly deviated from each other, the end portions can be easily fitted to each other.

上記実施形態によれば、第１繊維強化複合部材１０の第１凹部１６に第２繊維強化複合部材２０の第２凸部２５が嵌合するように、第１繊維強化複合部材１０と第２繊維強化複合部材２０の端部同士が突き合わされて接合されているので、圧縮応力が加わっても面外方向へ座屈しにくい構造とすることができ、接合部における圧縮強度を高く維持できる。よって、補強材の有無にかかわらず、繊維強化複合部材１０，２０の接合構造自体が高い圧縮強度の実現に寄与し、結果的に繊維強化複合部材１０，２０の接合による強度信頼性の低下を抑制できる。また、第１繊維強化複合部材１０又は第２繊維強化複合部材２０は、それぞれ、樹脂及び繊維束を含む第１繊維強化ロッド部材１１又は第２繊維強化ロッド部材２１の集合によって構成されるため、第１凹部１６又は第２凸部２５を容易に形成できる。さらに、第１繊維強化ロッド部材１１又は第２繊維強化ロッド部材２１の端部長さをそれぞれ調整することで、所望の位置に所望の形状・サイズの第１凹部１６又は第２凸部２５を得ることができる。   According to the above embodiment, the first fiber reinforced composite member 10 and the second fiber reinforced composite member 10 and the second fiber reinforced composite member 10 are fitted in the first concave portion 16 of the first fiber reinforced composite member 10 so that the second convex portion 25 of the second fiber reinforced composite member 20 is fitted. Since the ends of the fiber reinforced composite member 20 are abutted and joined to each other, even if a compressive stress is applied, it is possible to make the structure difficult to buckle in the out-of-plane direction, and the compressive strength at the joint can be maintained high. Therefore, regardless of the presence or absence of a reinforcing material, the joint structure itself of the fiber reinforced composite members 10 and 20 contributes to the realization of a high compressive strength, resulting in a decrease in strength reliability due to the joining of the fiber reinforced composite members 10 and 20. Can be suppressed. In addition, since the first fiber reinforced composite member 10 or the second fiber reinforced composite member 20 is configured by a set of the first fiber reinforced rod member 11 or the second fiber reinforced rod member 21 including a resin and a fiber bundle, respectively. The 1st recessed part 16 or the 2nd convex part 25 can be formed easily. Further, by adjusting the end lengths of the first fiber reinforced rod member 11 or the second fiber reinforced rod member 21, the first concave portion 16 or the second convex portion 25 having a desired shape and size is obtained at a desired position. be able to.

ここで、上述の実施形態の変形例について説明する。
図４Ａ〜図４Ｃは、第１〜第３変形例に係る繊維強化複合部材の接合体を説明するための図である。
図４Ａに示す繊維強化複合部材の接合体１Ａは、第１繊維強化複合部材１０の第１凹部１６及び第１凸部１５が厚さ方向に関して交互に位置し、これに対応して、第２繊維強化複合部材２０の第２凸部２５及び第２凹部２６が厚さ方向に関して交互に位置した構成となっている。この構成では、幅方向には凹凸が存在しない。そして、第１凹部１６と第２凸部２５、及び、第１凸部１５と第２凹部２６が、それぞれ嵌合した状態で、第１繊維強化複合部材１０と第２繊維強化複合部材２０の端部同士が突き合わされて接合されている。これにより、第１繊維強化複合部材１０と第２繊維強化複合部材２０の幅方向における接触面が存在しないため、接合時に第１繊維強化複合部材１０と第２繊維強化複合部材２０の幅方向の位置調整が容易に行える。 Here, a modified example of the above-described embodiment will be described.
4A to 4C are views for explaining a joined body of fiber-reinforced composite members according to first to third modifications.
In the joined body 1A of the fiber-reinforced composite member shown in FIG. 4A, the first concave portions 16 and the first convex portions 15 of the first fiber-reinforced composite member 10 are alternately positioned with respect to the thickness direction. The second convex portion 25 and the second concave portion 26 of the fiber reinforced composite member 20 are alternately arranged in the thickness direction. In this configuration, there is no unevenness in the width direction. And in the state which the 1st recessed part 16 and the 2nd convex part 25, and the 1st convex part 15 and the 2nd recessed part 26 each fitted, of the 1st fiber reinforced composite member 10 and the 2nd fiber reinforced composite member 20 The ends are abutted and joined. Thereby, since the contact surface in the width direction of the 1st fiber reinforced composite member 10 and the 2nd fiber reinforced composite member 20 does not exist, the width direction of the 1st fiber reinforced composite member 10 and the 2nd fiber reinforced composite member 20 is joined at the time of joining. Position adjustment can be performed easily.

図４Ｂに示す繊維強化複合部材の接合体１Ｂは、厚さ方向に関して第１繊維強化複合部材１０の第１凹部１６が設けられており、幅方向には凹凸は存在しない。具体的には、複数の第１繊維強化ロッド部材１１によって段差状に厚さ方向に関する第１凹部１６が形成されている。同様に、厚さ方向に関して第２繊維強化複合部材２０の第２凸部２５が設けられており、幅方向には凹凸は存在しない。具体的には、複数の第２繊維強化ロッド部材２１によって段差状に厚さ方向に関する第２凸部２５が形成されている。このような構成によれば、各繊維強化複合部材１０，２０に段差状に凹凸が形成されているので、繊維強化複合部材１０，２０同士を嵌め合わせる作業が円滑に行える。   4B has the 1st recessed part 16 of the 1st fiber reinforced composite member 10 regarding thickness direction, and the unevenness | corrugation does not exist in the width direction. Specifically, the first recess 16 in the thickness direction is formed in a stepped shape by the plurality of first fiber reinforced rod members 11. Similarly, the 2nd convex part 25 of the 2nd fiber reinforced composite member 20 is provided regarding the thickness direction, and an unevenness | corrugation does not exist in the width direction. Specifically, the 2nd convex part 25 regarding the thickness direction is formed in the level | step difference by the some 2nd fiber reinforced rod member 21. As shown in FIG. According to such a structure, since the unevenness | corrugation is formed in the step shape in each fiber reinforced composite member 10 and 20, the operation | work which fits fiber reinforced composite member 10 and 20 can be performed smoothly.

図４Ｃに示す繊維強化複合部材の接合体１Ｃは、複数の第１繊維強化複合部材１０によって第１凹部１６又は第１凸部１５が形成され、同様に複数の第２繊維強化複合部材２０によって第２凸部２５又は第２凹部２６が形成された構成となっている。なお、図４Ｃでは、厚さ方向及び幅方向に関して、それぞれ、２本の第１繊維強化複合部材１０によって第１凹部１６又は第１凸部１５が形成され、２本の第２繊維強化複合部材２０によって第２凸部２５又は第２凹部２６が形成された場合を例示している。これにより、各繊維強化複合部材１０，２０の製造を容易化できる。   In the fiber-reinforced composite member joined body 1C shown in FIG. 4C, the first concave portions 16 or the first convex portions 15 are formed by the plurality of first fiber-reinforced composite members 10, and the plurality of second fiber-reinforced composite members 20 are similarly formed. The second convex portion 25 or the second concave portion 26 is formed. In FIG. 4C, the first concave portion 16 or the first convex portion 15 is formed by the two first fiber reinforced composite members 10 in the thickness direction and the width direction, respectively, and the two second fiber reinforced composite members. The case where the 2nd convex part 25 or the 2nd recessed part 26 is formed by 20 is illustrated. Thereby, manufacture of each fiber reinforced composite member 10 and 20 can be facilitated.

次に、図２を参照して、一実施形態に係る繊維強化複合部材の接合方法について説明する。
一実施形態に係る繊維強化複合部材の接合方法は、第１繊維強化複合部材１０の端部と第２繊維強化複合部材２０の端部とを突き合わせる突合せステップと、第１繊維強化複合部材１０の端部と第２繊維強化複合部材２０の端部とを接合する接合ステップと、を備える。なお、各繊維強化複合部材１０，２０の構成については、上述した接合体１と同様であるため、その詳細な説明を省略する。 Next, with reference to FIG. 2, the joining method of the fiber reinforced composite member which concerns on one Embodiment is demonstrated.
The fiber-reinforced composite member joining method according to the embodiment includes a butting step of abutting the end portion of the first fiber-reinforced composite member 10 and the end portion of the second fiber-reinforced composite member 20, and the first fiber-reinforced composite member 10. A joining step for joining the end of the second fiber-reinforced composite member 20 and the end of the second fiber-reinforced composite member 20. In addition, about the structure of each fiber reinforced composite member 10 and 20, since it is the same as that of the conjugate | zygote 1 mentioned above, the detailed description is abbreviate | omitted.

突合せステップでは、図２（ａ）及び（ｂ）に示すように、第１繊維強化複
合部材１０の第１凹部１６に第２繊維強化複合部材２０の第２凸部２５を嵌め合わせる。このとき、第１凹部１６及び第２凸部２５がそれぞれ複数存在する場合には、複数の第１凹部１６にそれぞれ第２凸部２５を嵌め合わせる。また、第１繊維強化複合部材１０が第１凹部１６及び第２凸部２５を有し、第２繊維強化複合部材２０が第２凸部２５及び第２凹部２６を有する場合には、第１凹部１６に第２凸部２５を嵌め合わせるとともに、第１凸部１５を第２凹部２６に嵌め合わせる。
接合ステップでは、図２（ｃ）に示すように、第１繊維強化複合部材１０と第２繊維強化複合部材２０の端部同士を突き合わせた状態で、第１繊維強化複合部材１０の端部と第２繊維強化複合部材２０の端部との間の隙間に樹脂を注入し、樹脂を硬化させる。接合ステップにおける具体的な接合手法として、例えばＶａＲＴＭ（減圧注入工法）を用いることができる。すなわち、第１繊維強化複合部材１０と第２繊維強化複合部材２０とを突き合わせた接合部をバキュームバッグフィルムで覆い、このフィルム内部空間を減圧状態とした後、低粘度の熱硬化性樹脂（例えば不飽和ポリエステル樹脂、エポキシ樹脂等）を注入して硬化させる。なお、加熱硬化が必要な樹脂については、温風機やシリコンラバーヒーターで加熱し、樹脂を硬化させてもよい。また、別の手法として、第１繊維強化複合部材１０又は第２繊維強化複合部材２０の端部の少なくとも一方に上記樹脂又は接着剤を予め塗布しておき、第１繊維強化複合部材１０及び第２繊維強化複合部材２０の端部同士を互いに差し込んだ後に、樹脂又は接着剤を硬化させるようにしてもよい。 In the butting step, as shown in FIGS. 2A and 2B, the second convex portion 25 of the second fiber-reinforced composite member 20 is fitted into the first concave portion 16 of the first fiber-reinforced composite member 10. At this time, when there are a plurality of first concave portions 16 and a plurality of second convex portions 25, the second convex portions 25 are fitted into the plurality of first concave portions 16, respectively. Further, when the first fiber reinforced composite member 10 has the first concave portion 16 and the second convex portion 25 and the second fiber reinforced composite member 20 has the second convex portion 25 and the second concave portion 26, the first The second convex portion 25 is fitted into the concave portion 16 and the first convex portion 15 is fitted into the second concave portion 26.
In the joining step, as shown in FIG. 2 (c), the end portions of the first fiber reinforced composite member 10 and the end portions of the first fiber reinforced composite member 10 are brought into contact with each other with the end portions of the first fiber reinforced composite member 10 and the second fiber reinforced composite member 20 in contact Resin is injected into the gap between the end portions of the second fiber-reinforced composite member 20, and the resin is cured. As a specific joining method in the joining step, for example, VaRTM (reduced pressure injection method) can be used. That is, the joint portion where the first fiber reinforced composite member 10 and the second fiber reinforced composite member 20 are abutted is covered with a vacuum bag film, and after the internal space of the film is reduced in pressure, a low-viscosity thermosetting resin (for example, Unsaturated polyester resin, epoxy resin, etc.) are injected and cured. In addition, about resin which needs heat hardening, it may heat with a warm air machine or a silicon rubber heater, and may harden resin. As another method, the resin or adhesive is applied in advance to at least one of the end portions of the first fiber reinforced composite member 10 or the second fiber reinforced composite member 20, and the first fiber reinforced composite member 10 and the first fiber reinforced composite member 10 The resin or adhesive may be cured after the ends of the two-fiber reinforced composite member 20 are inserted into each other.

上述の実施形態によれば、第１繊維強化複合部材１０の第１凹部１６に第２繊維強化複合部材２０の第２凸部２５を嵌め合わせた後、これらの隙間に注入した樹脂を硬化させて第１繊維強化複合部材１０と第２繊維強化複合部材２０を接合するようになっている。これにより接合された接合体１は、第１凹部１６の壁面によって第２凸部２５の上下面が押さえられるので、圧縮応力が加わっても面外方向へ座屈しにくい構造とすることができ、接合部における圧縮強度を高く維持できる。よって、補強材の有無にかかわらず、繊維強化複合部材１０，２０の接合構造自体が高い圧縮強度の実現に寄与し、結果的に繊維強化複合部材１０，２０の接合による強度信頼性の低下を抑制できる。また、第１繊維強化複合部材１０又は第２繊維強化複合部材２０は、それぞれ、樹脂及び繊維束を含む第１繊維強化ロッド部材１１又は第２繊維強化ロッド部材２１の集合によって構成されるため、第１凹部１６又は第２凸部２５を容易に形成できる。さらに、第１繊維強化ロッド部材１１又は第２繊維強化ロッド部材２１の端部長さをそれぞれ調整することで、所望の位置に所望の形状・サイズの第１凹部１６又は第２凸部２６を得ることができる。   According to the above-mentioned embodiment, after fitting the 2nd convex part 25 of the 2nd fiber reinforced composite member 20 in the 1st recessed part 16 of the 1st fiber reinforced composite member 10, the resin inject | poured into these clearance gaps is hardened. Thus, the first fiber reinforced composite member 10 and the second fiber reinforced composite member 20 are joined. Since the joined body 1 joined by this is pressed on the upper and lower surfaces of the second convex portion 25 by the wall surface of the first concave portion 16, it can be structured to hardly buckle out of the plane even when compressive stress is applied, High compressive strength at the joint can be maintained. Therefore, regardless of the presence or absence of a reinforcing material, the joint structure itself of the fiber reinforced composite members 10 and 20 contributes to the realization of a high compressive strength, resulting in a decrease in strength reliability due to the joining of the fiber reinforced composite members 10 and 20. Can be suppressed. In addition, since the first fiber reinforced composite member 10 or the second fiber reinforced composite member 20 is configured by a set of the first fiber reinforced rod member 11 or the second fiber reinforced rod member 21 including a resin and a fiber bundle, respectively. The 1st recessed part 16 or the 2nd convex part 25 can be formed easily. Furthermore, by adjusting the end lengths of the first fiber reinforced rod member 11 or the second fiber reinforced rod member 21, the first concave portion 16 or the second convex portion 26 having a desired shape and size is obtained at a desired position. be able to.

ここで、上述の実施形態を風車翼に適用した例について以下に説明する。
図５は一実施形態に係る風車の全体構成を示す概略図である。図６は一実施形態に係る風車翼を示す断面図である。
図５に示すように、風車３０は、少なくとも一本の風車翼３１及びハブ３２で構成されるロータ３３と、ロータ３３を回転自在に支持するナセル３４と、地上又は水上に立設されてナセル３４が取り付けられるタワー３５と、を含む。風車３０が風力発電装置である場合、ロータ３３の回転が不図示の発電機に入力されて、発電を行うようになっている。 Here, the example which applied the above-mentioned embodiment to a windmill blade is demonstrated below.
FIG. 5 is a schematic diagram showing an overall configuration of a wind turbine according to an embodiment. FIG. 6 is a cross-sectional view showing a wind turbine blade according to an embodiment.
As shown in FIG. 5, the windmill 30 includes a rotor 33 including at least one windmill blade 31 and a hub 32, a nacelle 34 that rotatably supports the rotor 33, and a nacelle that is erected on the ground or water. And a tower 35 to which 34 is attached. When the windmill 30 is a wind power generator, the rotation of the rotor 33 is input to a generator (not shown) to generate power.

図５及び図６に示すように、風車翼３１は、外皮材４１と、翼長方向に延在して設けられるスパーキャップ４２とを含む。なお、翼長方向とは、風車翼３１の翼根部３１ａから先端部３１ｂに向かう方向であって、翼軸線に略平行である。   As shown in FIGS. 5 and 6, the wind turbine blade 31 includes an outer skin material 41 and a spar cap 42 that extends in the blade length direction. The blade length direction is a direction from the blade root 31a of the wind turbine blade 31 toward the tip 31b, and is substantially parallel to the blade axis.

外皮材４１は、その他の部分とともに風車翼３１の翼形を構成するものである。外皮材４１及びその他の部分は、例えば、ガラス繊維プラスチック層やコア材で形成されていてもよい。なお、この構造に限定されるものではなく、スパーキャップ４２以外の部位は、単にガラス繊維プラスチック積層体またはガラス繊維プラスチック発泡体等を配置した構成としてもよい。   The outer skin material 41 constitutes the airfoil of the wind turbine blade 31 together with the other portions. The outer skin material 41 and other portions may be formed of, for example, a glass fiber plastic layer or a core material. Note that the structure is not limited to this structure, and the portion other than the spar cap 42 may be configured such that a glass fiber plastic laminate or a glass fiber plastic foam is simply disposed.

スパーキャップ４２は、主として繊維強化複合部材で形成され、翼長方向に少なくとも一つの分割線４３によって複数に分割された構成とすることができる。その場合、スパーキャップ４２の各分割部位は、上述の接合方法によって接合される。なお、図５及び図６に示す例では、スパーキャップ４２が、風車翼３１の背側及び腹側にそれぞれ各１本ずつ設けられた構成となっている。
風車翼３１の背側のスパーキャップ４２と腹側のスパーキャップ４２との間には、シアウェブ４４が設けられても良い。このシアウェブ４４は、外皮材４１の内部空間に、翼長方向に延在している。 The spar cap 42 is mainly formed of a fiber reinforced composite member, and can be divided into a plurality of parts by at least one dividing line 43 in the blade length direction. In that case, each division | segmentation site | part of the spar cap 42 is joined by the above-mentioned joining method. In the example shown in FIGS. 5 and 6, one spar cap 42 is provided on each of the back side and the abdomen side of the wind turbine blade 31.
A shear web 44 may be provided between the spar cap 42 on the back side of the wind turbine blade 31 and the spar cap 42 on the abdomen side. The shear web 44 extends in the blade length direction in the internal space of the outer skin material 41.

具体的に、スパーキャップ４２は、樹脂及び繊維束を含む第１繊維強化ロッド部材１１の集合である第１繊維強化複合部材１０と、樹脂及び繊維束を含む第２繊維強化ロッド部材２１の集合である第２繊維強化複合部材２０と含んでいる。第１繊維強化複合部材１０は第１凹部１６及び第１凸部１５を有しており、第２繊維強化複合部材２０は第２凸部２５及び第２凹部２６を有している（図１〜図４参照）。   Specifically, the spar cap 42 includes a first fiber reinforced composite member 10 that is a set of first fiber reinforced rod members 11 including a resin and a fiber bundle, and a set of second fiber reinforced rod members 21 that include a resin and a fiber bundle. And the second fiber-reinforced composite member 20. The 1st fiber reinforced composite member 10 has the 1st recessed part 16 and the 1st convex part 15, and the 2nd fiber reinforced composite member 20 has the 2nd convex part 25 and the 2nd recessed part 26 (FIG. 1). To FIG. 4).

一実施形態に係る風車翼の製造方法では、第１繊維強化複合部材１０の端部と、第２繊維強化複合部材２０の端部とを突き合わせる突合せステップと、第１繊維強化複合部材１０の端部と第２繊維強化複合部材２０の端部とを接合する接合ステップと、を備える。
突合せステップでは、第１繊維強化複合部材１０の第１凹部１６に第２繊維強化複合部材２０の第２凸部２５を嵌め合わせる。
接合ステップでは、第１繊維強化複合部材１０と第２繊維強化複合部材２０の端部同士を突き合わせた状態で、第１繊維強化複合部材１０の端部と第２繊維強化複合部材２０の端部との間の隙間に樹脂を注入し、該樹脂を硬化させる。
なお、他の構成については、図１〜図４で説明した実施形態と同様であるため、詳細な説明を省略する。 In the method for manufacturing a wind turbine blade according to an embodiment, a butting step of abutting the end of the first fiber reinforced composite member 10 with the end of the second fiber reinforced composite member 20, A joining step for joining the end portion and the end portion of the second fiber-reinforced composite member 20.
In the butting step, the second convex portion 25 of the second fiber reinforced composite member 20 is fitted into the first concave portion 16 of the first fiber reinforced composite member 10.
In the joining step, the end portions of the first fiber reinforced composite member 10 and the end portions of the second fiber reinforced composite member 20 are in a state where the ends of the first fiber reinforced composite member 10 and the second fiber reinforced composite member 20 are abutted with each other. A resin is injected into the gap between the two and the resin is cured.
Other configurations are the same as those in the embodiment described with reference to FIGS.

以上説明したように、上述の実施形態によれば、第１繊維強化複合部材１０の第１凹部１６に第２繊維強化複合部材２０の第２凸部２５を嵌め合わせた後、これらの隙間に注入した樹脂を硬化させて第１繊維強化複合部材１０と第２繊維強化複合部材２０を接合するようにしたので、接合部における強度信頼性を高く維持することができる。また、第１繊維強化複合部材１０及び第２繊維強化複合部材２０は、第１繊維強化ロッド部材１１又は第２繊維強化複合部材２０の集合によって構成されるため、第１凹部１６又は第２凸部２５の大きさを、第１繊維強化ロッド部材１１又は第２繊維強化複合部材２０の径によって簡単に調整することができる。   As described above, according to the above-described embodiment, after the second convex portion 25 of the second fiber reinforced composite member 20 is fitted into the first concave portion 16 of the first fiber reinforced composite member 10, the gaps are formed between these portions. Since the injected resin is cured and the first fiber reinforced composite member 10 and the second fiber reinforced composite member 20 are joined, the strength reliability at the joint portion can be maintained high. In addition, since the first fiber reinforced composite member 10 and the second fiber reinforced composite member 20 are configured by a set of the first fiber reinforced rod member 11 or the second fiber reinforced composite member 20, the first concave portion 16 or the second convex portion. The size of the portion 25 can be easily adjusted by the diameter of the first fiber reinforced rod member 11 or the second fiber reinforced composite member 20.

以上、本発明の実施形態について詳細に説明したが、本発明はこれに限定されず、本発明の要旨を逸脱しない範囲において、各種の改良や変形を行ってもよいのはいうまでもない。   As mentioned above, although embodiment of this invention was described in detail, it cannot be overemphasized that this invention is not limited to this, In the range which does not deviate from the summary of this invention, various improvement and deformation | transformation may be performed.

例えば、上述の実施形態では、繊維強化複合部材の接合方法及び接合体が風車翼に適用される場合について説明したが、本実施形態に係る技術は風車翼に限定されるものではなく、例えば、航空機の主翼、自動車、船舶、鉄道車両等の他の部材に適用することもできる。   For example, in the above-described embodiment, the fiber reinforced composite member joining method and the case where the joined body is applied to a wind turbine blade have been described, but the technology according to this embodiment is not limited to a wind turbine blade, for example, The present invention can also be applied to other members such as aircraft main wings, automobiles, ships, and railway vehicles.

１ 接合体
１０ 第１繊維強化複合部材
１０ａ 端部
１０ｂ 基部
１１ 第１繊維強化ロッド部材
１５，２５ 凸部
１５ａ，２５ａ 端面（凸部端面）
１６，２６ 凹部
１６ｂ，２６ｂ 端面（凹部端面）
１７ 境界
２０ 第２繊維強化複合部材
２１ 第２繊維強化ロッド部材
３０ 風車
３１ 風車翼
３１ａ 翼根部
３１ｂ 先端部
３２ ハブ
３３ ロータ
３４ ナセル
３５ タワー
４１ 外皮
４２ スパーキャップ
４３ 分割線
４４ シアウェブ
DESCRIPTION OF SYMBOLS 1 Joining body 10 1st fiber reinforced composite member 10a End part 10b Base 11 1st fiber reinforced rod member 15,25 Convex part 15a, 25a End surface (convex part end surface)
16, 26 Recess 16b, 26b End face (recess end face)
17 boundary 20 second fiber reinforced composite member 21 second fiber reinforced rod member 30 wind turbine 31 wind turbine blade 31a blade root 31b tip 32 hub 33 rotor 34 nacelle 35 tower 41 outer skin 42 spur cap 43 dividing line 44 shear web

Claims (7)

樹脂及び繊維束を含む第１繊維強化ロッド部材の集合である第１繊維強化複合部材の端部と、樹脂及び繊維束を含む第２繊維強化ロッド部材の集合である第２繊維強化複合部材の端部とを突き合わせる突合せステップと、
前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部とを接合する接合ステップと、を備え、
少なくとも一本の前記第１繊維強化ロッド部材の端面が周囲の前記第１繊維強化ロッド部材の端面に対して窪み、前記第１繊維強化複合部材の前記端部には前記少なくとも一本の前記第１繊維強化ロッド部材によって第１凹部が形成されており、
少なくとも一本の前記第２繊維強化ロッド部材の端面が周囲の前記第２繊維強化ロッド部材の端面に対して突出し、前記第２繊維強化複合部材の前記端部には前記少なくとも一本の前記第２繊維強化ロッド部材によって第２凸部が形成されており、
前記突合せステップでは、前記第１繊維強化複合部材の前記第１凹部に前記第２繊維強化複合部材の前記第２凸部を嵌め合わせ、
前記接合ステップでは、前記第１繊維強化複合部材と前記第２繊維強化複合部材の端部同士を突き合わせた状態で、前記前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部との間の隙間に樹脂を注入し、該樹脂を硬化させるとともに、
前記第１繊維強化複合部材において、複数本の前記第１繊維強化ロッド部材が幅方向及び厚さ方向にそれぞれ配列されており、
前記第２繊維強化複合部材において、複数本の前記第２繊維強化ロッド部材が幅方向及び厚さ方向にそれぞれ配列されていることを特徴とする繊維強化複合部材の接合方法。 An end portion of a first fiber reinforced composite member that is a set of first fiber reinforced rod members including a resin and a fiber bundle, and a second fiber reinforced composite member that is a set of second fiber reinforced rod members including a resin and a fiber bundle. A butting step of matching the end,
Joining the end of the first fiber reinforced composite member and the end of the second fiber reinforced composite member; and
The end surface of at least one first fiber reinforced rod member is recessed with respect to the end surface of the surrounding first fiber reinforced rod member, and the end portion of the first fiber reinforced composite member has the at least one first fiber reinforced rod member. 1st recessed part is formed of 1 fiber reinforced rod member,
At least one end face of the second fiber reinforced rod member protrudes from an end face of the surrounding second fiber reinforced rod member, and the end portion of the second fiber reinforced composite member has the at least one second end. The 2nd convex part is formed with 2 fiber reinforced rod members,
In the butting step, the second convex portion of the second fiber-reinforced composite member is fitted into the first concave portion of the first fiber-reinforced composite member,
In the joining step, the end portion of the first fiber reinforced composite member and the second fiber reinforced composite member in a state where the end portions of the first fiber reinforced composite member and the second fiber reinforced composite member are abutted with each other. Injecting resin into the gap between the end of the, and curing the resin ,
In the first fiber reinforced composite member, a plurality of the first fiber reinforced rod members are arranged in the width direction and the thickness direction, respectively.
The said 2nd fiber reinforced composite member WHEREIN: The said 2nd fiber reinforced rod member is arranged in the width direction and the thickness direction, respectively , The joining method of the fiber reinforced composite member characterized by the above-mentioned. 前記第１繊維強化複合部材の端部には、前記周囲の前記第１繊維強化ロッド部材の端面に対して窪んだ前記少なくとも一本の前記第１繊維強化ロッド部材によって複数の前記第１凹部が形成され、
前記第２繊維強化複合部材の端部には、前記周囲の前記第２繊維強化ロッド部材の端面に対して突出した前記少なくとも一本の前記第２繊維強化ロッド部材によって複数の前記第２凸部が形成され、
前記突合せステップでは、複数の前記第１凹部にそれぞれ前記第２凸部を嵌め合わせることを特徴とする請求項１に記載の繊維強化複合部材の接合方法。 At the end of the first fiber reinforced composite member, a plurality of the first recesses are formed by the at least one first fiber reinforced rod member recessed with respect to the end surface of the surrounding first fiber reinforced rod member. Formed,
At the end of the second fiber reinforced composite member, a plurality of the second protrusions are formed by the at least one second fiber reinforced rod member protruding relative to the end surface of the surrounding second fiber reinforced rod member. Formed,
2. The fiber-reinforced composite member joining method according to claim 1, wherein, in the abutting step, the second convex portions are fitted into the plurality of first concave portions, respectively. 前記周囲の前記第１繊維強化ロッド部材によって少なくとも一つの第１凸部が形成されており、
前記周囲の前記第２繊維強化ロッド部材によって少なくとも一つの第２凹部が形成されており、
前記突合せステップでは、前記第１繊維強化複合部材の前記第１凸部を前記第２繊維強化複合部材の前記第２凹部を嵌め合わせることを特徴とする請求項２に記載の繊維強化複合部材の接合方法。 At least one first protrusion is formed by the surrounding first fiber-reinforced rod member,
At least one second recess is formed by the surrounding second fiber-reinforced rod member;
3. The fiber-reinforced composite member according to claim 2, wherein in the butting step, the first convex portion of the first fiber-reinforced composite member is fitted into the second concave portion of the second fiber-reinforced composite member. Joining method. 前記第１繊維強化複合部材の端部には、前記第１繊維強化複合部材の厚さ方向に関して前記第１凹部と前記第１凸部とが交互に設けられ、
前記第２繊維強化複合部材の端部には、前記第２繊維強化複合部材の厚さ方向に関して前記第２凹部と前記第２凸部とが交互に設けられることを特徴とする請求項３に記載の繊維強化複合部材の接合方法。 Wherein an end portion of the first fiber-reinforced composite member, said first recess with respect to the thickness direction of the first fiber-reinforced composite member and said first protrusion is provided alternately,
Wherein the end of the second fiber-reinforced composite member, in claim 3, wherein the second recess with respect to the thickness direction of the second fiber-reinforced composite member and the second convex portions are provided alternately The joining method of the fiber reinforced composite member of description. 樹脂及び繊維束を含む第１繊維強化ロッド部材の集合である第１繊維強化複合部材の端部と、樹脂及び繊維束を含む第２繊維強化ロッド部材の集合である第２繊維強化複合部材の端部とを突き合わせる突合せステップと、
前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部とを接合する接合ステップと、を備え、
少なくとも一本の前記第１繊維強化ロッド部材の端面が周囲の前記第１繊維強化ロッド部材の端面に対して窪み、前記第１繊維強化複合部材の前記端部には前記少なくとも一本の前記第１繊維強化ロッド部材によって第１凹部が形成されており、
少なくとも一本の前記第２繊維強化ロッド部材の端面が周囲の前記第２繊維強化ロッド部材の端面に対して突出し、前記第２繊維強化複合部材の前記端部には前記少なくとも一本の前記第２繊維強化ロッド部材によって第２凸部が形成されており、
前記突合せステップでは、前記第１繊維強化複合部材の前記第１凹部に前記第２繊維強化複合部材の前記第２凸部を嵌め合わせ、
前記接合ステップでは、前記第１繊維強化複合部材と前記第２繊維強化複合部材の端部同士を突き合わせた状態で、前記前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部との間の隙間に樹脂を注入し、該樹脂を硬化させるとともに、
前記第１繊維強化複合部材を形成する複数の前記第１繊維強化ロッド部材は、前記第１繊維強化複合部材の基部側において互いに結合されており、前記第１繊維強化複合部材の前記端部側において互いに拘束されておらず、
前記第２繊維強化複合部材を形成する複数の前記第２繊維強化ロッド部材は、前記第２繊維強化複合部材の基部側において互いに結合されており、前記第２繊維強化複合部材の前記端部側において互いに拘束されていないことを特徴とする請求項１乃至４の何れか一項に記載の繊維強化複合部材の接合方法。 An end portion of a first fiber reinforced composite member that is a set of first fiber reinforced rod members including a resin and a fiber bundle, and a second fiber reinforced composite member that is a set of second fiber reinforced rod members including a resin and a fiber bundle. A butting step of matching the end,
Joining the end of the first fiber reinforced composite member and the end of the second fiber reinforced composite member; and
The end surface of at least one first fiber reinforced rod member is recessed with respect to the end surface of the surrounding first fiber reinforced rod member, and the end portion of the first fiber reinforced composite member has the at least one first fiber reinforced rod member. 1st recessed part is formed of 1 fiber reinforced rod member,
At least one end face of the second fiber reinforced rod member protrudes from an end face of the surrounding second fiber reinforced rod member, and the end portion of the second fiber reinforced composite member has the at least one second end. The 2nd convex part is formed with 2 fiber reinforced rod members,
In the butting step, the second convex portion of the second fiber-reinforced composite member is fitted into the first concave portion of the first fiber-reinforced composite member,
In the joining step, the end portion of the first fiber reinforced composite member and the second fiber reinforced composite member in a state where the end portions of the first fiber reinforced composite member and the second fiber reinforced composite member are abutted with each other. Injecting resin into the gap between the end of the, and curing the resin,
A plurality of said first fiber-reinforced rod member forming the first fiber-reinforced composite member, the being coupled to each other at the base side of the first fiber-reinforced composite member, said end portion of said first fiber-reinforced composite member Are not bound to each other,
A plurality of said second fiber-reinforced rod member forming the second fiber-reinforced composite member, the being coupled to each other at the base side of the second fiber-reinforced composite member, said end portion of said second fiber-reinforced composite member The fiber-reinforced composite member joining method according to any one of claims 1 to 4, wherein the fiber-reinforced composite members are not restricted to each other. 樹脂及び繊維束を含む第１繊維強化ロッド部材の集合である第１繊維強化複合部材と、
樹脂及び繊維束を含む第２繊維強化ロッド部材の集合であり、前記第１繊維強化複合部材に接合される第２繊維強化複合部材と、を備え、
前記第１繊維強化複合部材において、複数本の前記第１繊維強化ロッド部材が幅方向及び厚さ方向にそれぞれ配列されており、
前記第２繊維強化複合部材において、複数本の前記第２繊維強化ロッド部材が幅方向及び厚さ方向にそれぞれ配列されており、
少なくとも一本の前記第１繊維強化ロッド部材の端面が周囲の前記第１繊維強化ロッド部材の端面に対して窪み、前記第１繊維強化複合部材の端部には前記少なくとも一本の前記第１繊維強化ロッド部材によって第１凹部が形成されており、
少なくとも一本の前記第２繊維強化ロッド部材の端面が周囲の前記第２繊維強化ロッド部材の端面に対して突出し、前記第２繊維強化複合部材の端部には前記少なくとも一本の前記第２繊維強化ロッド部材によって第２凸部が形成されており、
前記第１繊維強化複合部材の前記第１凹部に前記第２繊維強化複合部材の前記第２凸部が嵌合するように、前記第１繊維強化複合部材と前記第２繊維強化複合部材の端部同士が突き合わされて接合されていることを特徴とする繊維強化複合部材接合体。 A first fiber-reinforced composite member that is a set of first fiber-reinforced rod members including a resin and a fiber bundle;
A second fiber reinforced composite member that is a set of second fiber reinforced rod members including a resin and a fiber bundle, and is joined to the first fiber reinforced composite member,
In the first fiber reinforced composite member, a plurality of the first fiber reinforced rod members are arranged in the width direction and the thickness direction, respectively.
In the second fiber reinforced composite member, a plurality of the second fiber reinforced rod members are arranged in the width direction and the thickness direction, respectively.
The end face of at least one of the first fiber reinforced rod members is recessed with respect to the end face of the surrounding first fiber reinforced rod member, and the end of the first fiber reinforced composite member has the at least one of the first fiber reinforced rod members. The first recess is formed by the fiber reinforced rod member,
The end face of at least one second fiber reinforced rod member protrudes from the end face of the surrounding second fiber reinforced rod member, and the at least one second fiber reinforced composite member is formed at the end of the second fiber reinforced composite member. The second convex part is formed by the fiber reinforced rod member,
The ends of the first fiber reinforced composite member and the second fiber reinforced composite member so that the second convex portion of the second fiber reinforced composite member is fitted in the first concave portion of the first fiber reinforced composite member. A fiber-reinforced composite member joined body characterized in that the parts are butted together and joined. 外皮材と、翼長方向に延在して設けられるスパーキャップとを含む風車翼の製造方法であって、
前記スパーキャップが、樹脂及び繊維束を含む第１繊維強化ロッド部材の集合である第１繊維強化複合部材と、樹脂及び繊維束を含む第２繊維強化ロッド部材の集合である第２繊維強化複合部材と含み、
前記第１繊維強化複合部材の端部と、前記第２繊維強化複合部材の端部とを突き合わせる突合せステップと、
前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部とを接合する接合ステップと、を備え、
少なくとも一本の前記第１繊維強化ロッド部材の端面が周囲の前記第１繊維強化ロッド部材の端面に対して窪み、前記第１繊維強化複合部材の前記端部には前記少なくとも一本の前記第１繊維強化ロッド部材によって第１凹部が形成されており、
少なくとも一本の前記第２繊維強化ロッド部材の端面が周囲の前記第２繊維強化ロッド部材の端面に対して突出し、前記第２繊維強化複合部材の前記端部には前記少なくとも一本の前記第２繊維強化ロッド部材によって第２凸部が形成されており、
前記突合せステップでは、前記第１繊維強化複合部材の前記第１凹部に前記第２繊維強化複合部材の前記第２凸部を嵌め合わせ、
前記接合ステップでは、前記第１繊維強化複合部材と前記第２繊維強化複合部材の端部同士を突き合わせた状態で、前記前記第１繊維強化複合部材の前記端部と前記第２繊維強化複合部材の前記端部との間の隙間に樹脂を注入し、該樹脂を硬化させるとともに、
前記第１繊維強化複合部材において、複数本の前記第１繊維強化ロッド部材が幅方向及び厚さ方向にそれぞれ配列されており、
前記第２繊維強化複合部材において、複数本の前記第２繊維強化ロッド部材が幅方向及び厚さ方向にそれぞれ配列されていることを特徴とする風車翼の製造方法。
A method of manufacturing a wind turbine blade including an outer skin material and a spar cap provided to extend in the blade length direction,
The spar cap is a first fiber reinforced composite member that is a set of first fiber reinforced rod members that include a resin and a fiber bundle, and a second fiber reinforced composite that is a set of second fiber reinforced rod members that include a resin and a fiber bundle. Including parts,
A butting step of abutting the end of the first fiber reinforced composite member and the end of the second fiber reinforced composite member;
Joining the end of the first fiber reinforced composite member and the end of the second fiber reinforced composite member; and
The end surface of at least one first fiber reinforced rod member is recessed with respect to the end surface of the surrounding first fiber reinforced rod member, and the end portion of the first fiber reinforced composite member has the at least one first fiber reinforced rod member. 1st recessed part is formed of 1 fiber reinforced rod member,
At least one end face of the second fiber reinforced rod member protrudes from an end face of the surrounding second fiber reinforced rod member, and the end portion of the second fiber reinforced composite member has the at least one second end. The 2nd convex part is formed with 2 fiber reinforced rod members,
In the butting step, the second convex portion of the second fiber-reinforced composite member is fitted into the first concave portion of the first fiber-reinforced composite member,
In the joining step, the end portion of the first fiber reinforced composite member and the second fiber reinforced composite member in a state where the end portions of the first fiber reinforced composite member and the second fiber reinforced composite member are abutted with each other. Injecting resin into the gap between the end of the, and curing the resin ,
In the first fiber reinforced composite member, a plurality of the first fiber reinforced rod members are arranged in the width direction and the thickness direction, respectively.
In the second fiber reinforced composite member, a plurality of the second fiber reinforced rod members are arranged in the width direction and the thickness direction, respectively .
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