WO2018016050A1 - Cfrp member and lattice structure - Google Patents

Cfrp member and lattice structure Download PDF

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Publication number
WO2018016050A1
WO2018016050A1 PCT/JP2016/071404 JP2016071404W WO2018016050A1 WO 2018016050 A1 WO2018016050 A1 WO 2018016050A1 JP 2016071404 W JP2016071404 W JP 2016071404W WO 2018016050 A1 WO2018016050 A1 WO 2018016050A1
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Prior art keywords
carbon fiber
cfrp
cfrp member
lattice structure
members
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PCT/JP2016/071404
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French (fr)
Japanese (ja)
Inventor
鈴木　茂雄
雅人 石井
隆平 青木
智弘 横関
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株式会社ジャムコ
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Priority to PCT/JP2016/071404 priority Critical patent/WO2018016050A1/en
Priority to JP2016567096A priority patent/JP6298901B1/en
Publication of WO2018016050A1 publication Critical patent/WO2018016050A1/en

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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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • 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
    • B29C70/06—Fibrous reinforcements only
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material

Definitions

  • the present invention relates to a CFRP member in which a carbon fiber is impregnated with a resin, and more particularly to a CFRP member capable of forming an arbitrary curved or curved shape.
  • a tube impregnated with resin in a state in which carbon fibers are wound is cut in the longitudinal direction and divided into a plurality of annular bodies, and the plurality of annular bodies are joined to an outer plate.
  • a grid panel structure is known (see, for example, Patent Document 1).
  • the grid panel structure disclosed in Patent Document 1 has a structure in which a plurality of annular bodies cut from one tube are joined, each of the plurality of annular bodies is configured in the same shape. Therefore, the grid panel structure described in Patent Document 1 is suitable for manufacturing a two-dimensional planar structure with a small variation in the height direction, and is a structure configured by a three-dimensional curved surface. It is difficult to form the film even in consideration of the original problem of providing high rigidity.
  • an object of the present invention is to provide a CFRP member capable of forming a three-dimensional structure composed of an arbitrary curve or curved surface while ensuring high rigidity as a CFRP structure, and a manufacturing method thereof.
  • a CFRP member comprises a carbon fiber body in which a plurality of carbon fiber bundles extending in a predetermined extending direction are laminated in a resin material, The length of the carbon fiber bundle located in the lowermost layer of the fiber body is different from the length of the carbon fiber bundle located in the uppermost layer. At this time, each of the plurality of carbon fiber bundles may be formed in a ring shape.
  • the CFRP member according to the present invention can constitute a lattice structure by joining at least a part of side surfaces of a plurality of CFRP members to each other.
  • a CFRP member capable of forming a three-dimensional structure composed of an arbitrary curve or curved surface and a manufacturing method thereof while ensuring high rigidity as a CFRP structure.
  • FIG. 5 is a perspective view showing an outline of a lattice structure that is a typical use example of a CFRP member according to Embodiment 2 of the present invention, and is a partially enlarged view showing an arrangement of a plurality of CFRP members. It is a perspective view showing the outline of the lattice structure which is a typical use example of the CFRP member by Example 2 of the present invention, and shows the lattice structure formed by joining a plurality of CFRP members. It is a perspective view which shows the structure of the CFRP member by Example 3 of this invention. It is a schematic diagram which shows the structure of the CFRP member by Example 3 of this invention, Comprising: It is a perspective view which shows arrangement
  • FIG. 7 is a perspective view showing an outline of a lattice structure that is a typical use example of a CFRP member according to Embodiment 3 of the present invention, and is a partially enlarged view showing an arrangement of a plurality of CFRP members. It is a perspective view showing the outline of the lattice structure which is a typical use example of the CFRP member by Example 3 of the present invention, and showing the lattice structure formed by joining a plurality of CFRP members.
  • FIG. 9 is a perspective view showing an outline of a lattice structure that is a typical use example of a CFRP member according to Example 4 of the present invention, and is a partially enlarged view showing an arrangement of a plurality of CFRP members. It is a perspective view showing the outline of the lattice structure which is the typical use example of the CFRP member by Example 4 of the present invention, and shows the lattice structure formed by joining a plurality of CFRP members.
  • FIG. 1 is a schematic view showing a configuration of a CFRP member according to Embodiment 1 of the present invention
  • FIG. 1A is a perspective view thereof
  • FIG. 1B shows an arrangement of carbon fiber bodies included in the CFRP member
  • 1C is a partially transparent side view of the CFRP member as viewed from the direction of arrow A in FIG. 1A.
  • the CFRP member 10 according to the first embodiment of the present invention has a carbon fiber body 12 in which a plurality of carbon fiber bundles 13, 14, 15 extending in the same extending direction are stacked. It has a structure embedded (embedded) inside.
  • the CFRP member 10 according to the first embodiment has a shape including two side surface portions 10a and a connection portion 10b that connects them while bending them.
  • the “carbon fiber bundle” in the present specification means a bundle-like (strip-shaped) member that continuously contains carbon fibers in the extending direction.
  • a single carbon fiber a plurality of carbon fibers, In which carbon fibers are bundled or short carbon fibers are continuously arranged in the extending direction.
  • a plurality of carbon fibers are bundled or short carbon fibers are continuously arranged in the extending direction, they may be formed in a band shape through a binder such as a resin material.
  • the carbon fiber body 12 includes a first carbon fiber bundle 13 located in the lowermost layer, a second carbon fiber bundle 14 located in the intermediate layer, and a third carbon located in the uppermost layer. And a fiber bundle 15.
  • the carbon fiber bundles 13, 14, and 15 are obtained by arranging one or a plurality of carbon fibers along the predetermined extending direction, and correspond to the positions of the side surface portion 10 a and the connection portion 10 b of the CFRP member.
  • the side portions 13a, 14a and 15a and the connecting portions 13b, 14b and 15b are included.
  • the carbon fiber bundles 13, 14, 15 are set such that the total length L 15 in the extending direction of the carbon fiber bundle 15 is longer than the total length L 13 in the extending direction of the carbon fiber bundle 13. .
  • the total length of the carbon fiber bundle 14 located in the intermediate layer is intermediate between the two.
  • the lengths of the upper surface 10c and the lower surface 10d of the CFRP member 10 are made different by making the total length in the extending direction of the carbon fiber bundle 13 located in the lowermost layer and the carbon fiber bundle 15 located in the uppermost layer different.
  • the width (width in FIG. 1C) is also different, and the CFRP member 10 forms arbitrary curves or curved surfaces on the upper and lower surfaces.
  • the resin material 11 is configured to cover the outer surface in a state in which the carbon fiber body 12 is included therein, and can be formed by a technique such as injection molding in a mold.
  • a technique such as injection molding in a mold.
  • the resin material 11 for example, a general thermoplastic resin or the like can be exemplified, and the CFRP member 10 having a predetermined final shape can be manufactured in a mold by hot injection molding. it can.
  • FIG. 2 shows an outline of a lattice structure which is a typical use example of the CFRP member according to the first embodiment of the present invention.
  • FIG. 2A is a perspective view showing a partially enlarged arrangement of a plurality of CFRP members.
  • FIG. 2B is a perspective view showing a lattice structure formed by joining a plurality of CFRP members.
  • a lattice structure (lattice structure) is formed by combining a plurality of CFRP members 10 according to the first embodiment illustrated in FIG.
  • the side surface portion 10a of another CFRP member 10 is joined to the side surface portion 10a of one CFRP member 10, and the CFRP member different from the other CFRP member 10 is further connected to the connection portion 10b of the one CFRP member 10. Ten connecting portions 10b are joined.
  • a lattice structure 100 including a plurality of openings 100a surrounded by a plurality of CFRP members 10 and having an arbitrary curved surface shape is formed.
  • the intersection (intersection) C1 of the lattice structure 100 has a structure in which the connection portions 10b of the two CFRP members 10 are joined, and therefore, two carbon fiber bodies exist in parallel to each other at the intersection C1.
  • higher rigidity can be obtained.
  • the CFRP member according to the first embodiment of the present invention includes a carbon fiber body laminated in a state in which an arbitrary curve or curved surface is configured. Therefore, while ensuring high rigidity, A member having a three-dimensional shape can be obtained. Further, by joining a plurality of CFRP members according to Example 1 of the present invention to form a lattice structure, the carbon fiber body does not intersect at the intersecting portion, and higher rigidity can be obtained as compared with a single CFRP member. It becomes possible.
  • FIG. 3 is a perspective view schematically showing a CFRP member according to Embodiment 2 of the present invention.
  • the CFRP member according to the second embodiment of the present invention has two CFRP members in addition to the first CFRP member 10 in which the two side surface portions 10 a shown in FIG.
  • the second CFRP member 20 in which the two side surface portions 20a are connected by the connection portion 20b in an acute angle arrangement is used.
  • the second CFRP member 20 is the same as that of the first embodiment except for the angular arrangement, and thus the description thereof is omitted.
  • FIG. 4 shows an outline of a lattice structure that is a typical use example of the CFRP member according to the second embodiment of the present invention.
  • FIG. 4A is a perspective view showing a partially enlarged arrangement of a plurality of CFRP members.
  • FIG. 4B is a perspective view showing a lattice structure formed by joining a plurality of CFRP members.
  • a lattice structure (lattice structure) is formed by combining a plurality of CFRP members 10 and CFRP members 20 illustrated in FIG.
  • the side surface portion 20a of the CFRP member 20 is joined to one surface of the side surface portion 10a of the CFRP member 10, and the connection portion 10b of another CFRP member 10 is joined to the other surface.
  • a lattice structure 200 including a plurality of openings 200 a surrounded by a plurality of CFRP members 10 and a plurality of CFRP members 20 and having an arbitrary curved surface shape. Is formed.
  • the intersection (intersection portion) C2 of the lattice structure 200 is arranged such that the connection portion 10b of the pair of CFRP members 10 and the connection portion 20b of the pair of CFRP members 20 face each other, and more than the single CFRP member. High rigidity can be obtained, and the tolerance to deformation can be ensured because they are not joined to each other.
  • FIGS. 5A and 5B are schematic views showing a configuration of a CFRP member according to Embodiment 3 of the present invention
  • FIG. 5A is a perspective view thereof
  • FIG. 5B shows an arrangement of carbon fiber bodies included in the CFRP member.
  • FIG. 5C is a partially transparent side view of the CFRP member as seen from the direction of arrow B in FIG. 5A.
  • the CFRP member 30 according to the third embodiment of the present invention has a structure in which a resin material 31 is impregnated with a carbon fiber body 32 (see FIG. 5B) formed in a substantially diamond-shaped annular shape. Yes.
  • the CFRP member 30 has a shape including two sets of opposing side surface portions 30a and two sets of connection portions 30b and 30c which are connected while being bent.
  • the connecting portion 30b is formed so as to connect two adjacent side surface portions 30a at an obtuse angle, and the connecting portion 30b is formed so as to connect two adjacent side surface portions 30a at an acute angle.
  • the carbon fiber body 32 includes a first annular carbon fiber bundle 33 located in the lowermost layer, a second annular carbon fiber bundle 34 located in the intermediate layer, and a third annular carbon fiber bundle located in the uppermost layer.
  • the annular carbon fiber bundle 35 are formed by forming one or a plurality of carbon fibers as a substantially diamond-shaped annular member, and correspond to the positions of the side surface portion 30a and the connection portions 30b and 30c of the CFRP member.
  • the side portions 33a, 34a and 35a and the connecting portions 33b, 33c, 34b, 34c, 35b and 35c are included.
  • the annular carbon fiber bundles 33, 34, and 35 have a longer width D35 of the annular carbon fiber bundle 35 than a width D33 of the annular carbon fiber bundle 33 in the major axis direction. Is set. At this time, it is preferable that the width
  • the circumferential length of the upper surface 30d of the CFRP member 30 is made different by setting the total length in the major axis direction of the annular carbon fiber bundle 33 located in the lowermost layer and the annular carbon fiber bundle 35 located in the uppermost layer to be different. The circumferential length of the lower surface 30e is different, and the CFRP member 30 forms an arbitrary curve or curved surface on the upper and lower surfaces.
  • the resin material 31 is configured to cover the outer surface with the carbon fiber body 32 encapsulated therein, and is formed by a technique such as injection molding in a mold, for example. can do.
  • a technique such as injection molding in a mold, for example. can do.
  • the resin material 31 for example, a general thermoplastic resin or the like can be exemplified, and a CFRP member 30 having a predetermined final shape can be manufactured in a mold by hot injection molding. it can.
  • FIG. 6 shows an outline of a lattice structure that is a typical use example of a CFRP member according to Embodiment 3 of the present invention.
  • FIG. 6A is a perspective view showing a partially enlarged arrangement of a plurality of CFRP members.
  • FIG. 6B is a perspective view showing a lattice structure formed by joining a plurality of CFRP members.
  • FIG. 6A when a lattice structure (lattice structure) is formed by combining a plurality of CFRP members 30 according to the third embodiment illustrated in FIG. 5, another CFRP member is formed on the side surface 30a of one CFRP member 30. 30 side surfaces 30a are joined, and the side surface 30a of another CFRP member 30 different from the other CFRP members 30 is joined to the side surface 30a adjacent to the one CFRP member 10 with the connecting portion 30b interposed therebetween. .
  • a plurality of annular CFRP members 30 including the opening 300a are joined to each other at the side surface portion 30a, and a lattice structure 300 having an arbitrary curved surface shape is obtained. It is formed.
  • the intersection (intersection portion) C3 of the lattice structure 300 is arranged such that the connection portions 30b and 30c of the annular CFRP member 30 are opposed to each other in a pair, and higher rigidity is obtained compared to a single CFRP member. Since they are not joined to each other, a tolerance for deformation can be secured.
  • FIG. 7 is a perspective view schematically showing a CFRP member according to Embodiment 4 of the present invention.
  • the CFRP member 40 according to the fourth embodiment of the present invention has a corrugated shape in which a plurality of side surface portions 40a and a plurality of connection portions 40b that are connected while being bent are alternately and continuously formed ( Corrugated shape).
  • the CFRP member 40 impregnates the inside of the resin material with a carbon fiber body in which a plurality of carbon fiber bundles extending in the same extending direction are laminated. It has the structure.
  • the relationship between the carbon fiber body and the resin material is configured as a continuous connection of the one shown in FIG. 1 of the first embodiment, and a description thereof is omitted, but the CFRP member of the first embodiment is omitted.
  • the CFRP member 40 forms an arbitrary curve or curved surface on the upper and lower surfaces.
  • FIG. 8 shows the outline
  • FIG. 8B is a perspective view showing a lattice structure formed by joining a plurality of CFRP members.
  • a lattice structure laminate structure
  • FIG. 8A when a lattice structure (lattice structure) is formed by combining a plurality of CFRP members 30 according to the third embodiment illustrated in FIG. 7, a connection continuously formed on one CFRP member 40.
  • the joint portion 40b and the connection portion 40b continuously formed on the other CFRP member 40 are joined, and the joint portions (see the intersection C4 in FIG. 8B) between these connection portions 40b are staggered in the longitudinal direction of the CFRP member 40. To place.
  • a lattice structure 400 having a plurality of openings 400a surrounded by a plurality of CFRP members 40 and having an arbitrary curved surface shape is formed.
  • the intersection (intersection portion) C4 of the lattice structure 400 is disposed so that the connection portions 40b of the annular CFRP member 40 are opposed to each other in a pair, and higher rigidity is obtained as compared with a single CFRP member. Since the range of the joint portion can be minimized as compared with the embodiment, the manufacturing process of the lattice structure is facilitated.
  • CFRP member according to the present invention is not limited to the above specific example, and various modifications can be made. Can be applied.
  • examples 1 to 4 a case where a plurality of carbon fiber bundles are individually laminated to form a carbon fiber body is illustrated, but one carbon fiber or one band-like carbon fiber is exemplified. It is good also as a structure laminated
  • the annular carbon fiber body shown in Example 3 is configured, carbon fiber bundles can be formed in a substantially spiral shape and stacked.
  • the CFRP member is illustrated in the case where a predetermined curved surface shape is obtained by performing hot injection molding in a state where the carbon fiber bundle is disposed in the mold. After setting the molding temperature to a temperature lower than the temperature at which the resin material is completely cured, after making an intermediate product of the CFRP member, it is finally adjusted to a predetermined shape and then heated to the complete curing temperature again. You may comprise so that the final shape of a member may be obtained. Further, in Examples 1 to 4 described above, the case of the carbon fiber body having three layers is exemplified, but it is natural that the number of layers may be two or four or more as long as the number is plural.
  • the CFRP member is manufactured by exemplifying the case where the resin material is injection-molded with the carbon fiber body disposed in the mold.
  • autoclave molding or press molding using a prepreg is exemplified.
  • RTM Resin Transfer Molding

Abstract

Provided are: a CFRP member which provides a high degree of rigidity as a CFRP structure and which allows formation of a three-dimensional structure composed of any curved line or curved surface; and a method for manufacturing the CFRP member. The CFRP member is a carbon fiber body impregnated in a resin material, the carbon fiber body having a plurality of stacked carbon fiber bundles that extend in a predetermined direction of extension. The length of the carbon fiber bundle positioned in the lowermost layer in the carbon fiber body is different from the length of the carbon fiber bundle positioned in the uppermost layer.

Description

ＣＦＲＰ部材及びラティス構造体CFRP member and lattice structure
　本発明は、炭素繊維を樹脂に含浸したＣＦＲＰ部材に関し、特に、任意の曲線あるいは曲面形状を形成できるＣＦＲＰ部材に関する。 The present invention relates to a CFRP member in which a carbon fiber is impregnated with a resin, and more particularly to a CFRP member capable of forming an arbitrary curved or curved shape.
　航空機やロケット等の航空宇宙用のボディ外板等に適用される構造物は、軽量であることに加えて、例えば座屈等を生じない高い剛性が必要となる。
　このような構造物として、炭素繊維を巻回した状態で樹脂に含浸させた管を長手方向に切断して複数の環状体に分割し、これら複数の環状体を外板に接合して形成したグリッドパネル構造体が知られている（例えば特許文献１参照）。 In addition to being lightweight, structures applied to aerospace body skins such as aircraft and rockets require high rigidity that does not cause buckling, for example.
As such a structure, a tube impregnated with resin in a state in which carbon fibers are wound is cut in the longitudinal direction and divided into a plurality of annular bodies, and the plurality of annular bodies are joined to an outer plate. A grid panel structure is known (see, for example, Patent Document 1).
特願２０１５－１２７１２１号公報Japanese Patent Application No. 2015-127121
　特許文献１で開示されたグリッドパネル構造体は、１つの管から切断された複数の環状体を接合した構造のため、複数の環状体はそれぞれ同一の形状で構成される。
　したがって、特許文献１に記載されたグリッドパネル構造体は、高さ方向の変動が小さい、すなわち２次元の平面構造を製造するのに適したものであり、３次元の曲面で構成される構造体を形成することは、高い剛性を備えるという元々の課題を考慮しても困難である。 Since the grid panel structure disclosed in Patent Document 1 has a structure in which a plurality of annular bodies cut from one tube are joined, each of the plurality of annular bodies is configured in the same shape.
Therefore, the grid panel structure described in Patent Document 1 is suitable for manufacturing a two-dimensional planar structure with a small variation in the height direction, and is a structure configured by a three-dimensional curved surface. It is difficult to form the film even in consideration of the original problem of providing high rigidity.
　そこで、本発明の目的は、ＣＦＲＰ構造としての高い剛性を確保しつつ、任意の曲線あるいは曲面で構成される３次元構造を形成可能としたＣＦＲＰ部材及びその製造方法を提供することにある。 Therefore, an object of the present invention is to provide a CFRP member capable of forming a three-dimensional structure composed of an arbitrary curve or curved surface while ensuring high rigidity as a CFRP structure, and a manufacturing method thereof.
　上記の目的を達成するために、本発明によるＣＦＲＰ部材は、所定の延在方向に延在する複数の炭素繊維束を積層した炭素繊維体が樹脂材料に内包されたものであって、前記炭素繊維体の最下層に位置する炭素繊維束の長さと最上層に位置する炭素繊維束の長さとが異なることを特徴とする。
　このとき、前記複数の炭素繊維束は、それぞれ環状に形成されてもよい。 In order to achieve the above object, a CFRP member according to the present invention comprises a carbon fiber body in which a plurality of carbon fiber bundles extending in a predetermined extending direction are laminated in a resin material, The length of the carbon fiber bundle located in the lowermost layer of the fiber body is different from the length of the carbon fiber bundle located in the uppermost layer.
At this time, each of the plurality of carbon fiber bundles may be formed in a ring shape.
　また、本発明によるＣＦＲＰ部材は、複数個のＣＦＲＰ部材における側面部の少なくとも一部を互いに接合することにより、ラティス構造体を構成することができる。 Further, the CFRP member according to the present invention can constitute a lattice structure by joining at least a part of side surfaces of a plurality of CFRP members to each other.
　本発明によれば、ＣＦＲＰ構造としての高い剛性を確保しつつ、任意の曲線あるいは曲面で構成される３次元構造を形成可能としたＣＦＲＰ部材及びその製造方法を提供できる。 According to the present invention, it is possible to provide a CFRP member capable of forming a three-dimensional structure composed of an arbitrary curve or curved surface and a manufacturing method thereof while ensuring high rigidity as a CFRP structure.
本発明の実施例１によるＣＦＲＰ部材の構成を示す斜視図である。It is a perspective view which shows the structure of the CFRP member by Example 1 of this invention. 本発明の実施例１によるＣＦＲＰ部材の構成を示す概要図であって、ＣＦＲＰ部材に内包される炭素繊維体の配置を示す斜視図である。It is a schematic diagram which shows the structure of the CFRP member by Example 1 of this invention, Comprising: It is a perspective view which shows arrangement | positioning of the carbon fiber body included in a CFRP member. 本発明の実施例１によるＣＦＲＰ部材の構成を示す概要図であって、図１Ａの矢印Ａ方向からみたＣＦＲＰ部材の部分透過側面図である。It is a schematic diagram which shows the structure of the CFRP member by Example 1 of this invention, Comprising: It is a partial permeation | transmission side view of the CFRP member seen from the arrow A direction of FIG. 1A. 本発明の実施例１によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、複数のＣＦＲＰ部材による配置を部分拡大して示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the outline | summary of the lattice structure which is a typical usage example of the CFRP member by Example 1 of this invention, Comprising: The arrangement | positioning by several CFRP member is expanded partially. 本発明の実施例１によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、複数のＣＦＲＰ部材を接合して形成されたラティス構造を示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the outline | summary of the lattice structure which is a typical usage example of the CFRP member by Example 1 of this invention, Comprising: The lattice structure formed by joining several CFRP members. 本発明の実施例２によるＣＦＲＰ部材の概略を示す斜視図である。It is a perspective view which shows the outline of the CFRP member by Example 2 of this invention. 本発明の実施例２によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、複数のＣＦＲＰ部材による配置を部分拡大して示す斜視図である。FIG. 5 is a perspective view showing an outline of a lattice structure that is a typical use example of a CFRP member according to Embodiment 2 of the present invention, and is a partially enlarged view showing an arrangement of a plurality of CFRP members. 本発明の実施例２によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、複数のＣＦＲＰ部材を接合して形成されたラティス構造を示す斜視図である。It is a perspective view showing the outline of the lattice structure which is a typical use example of the CFRP member by Example 2 of the present invention, and shows the lattice structure formed by joining a plurality of CFRP members. 本発明の実施例３によるＣＦＲＰ部材の構成を示す斜視図である。It is a perspective view which shows the structure of the CFRP member by Example 3 of this invention. 本発明の実施例３によるＣＦＲＰ部材の構成を示す概要図であって、ＣＦＲＰ部材に内包される炭素繊維体の配置を示す斜視図である。It is a schematic diagram which shows the structure of the CFRP member by Example 3 of this invention, Comprising: It is a perspective view which shows arrangement | positioning of the carbon fiber body included in a CFRP member. 本発明の実施例３によるＣＦＲＰ部材の構成を示す概要図であって、図５Ａの矢印Ｂ方向からみたＣＦＲＰ部材の部分透過側面図である。It is a schematic diagram which shows the structure of the CFRP member by Example 3 of this invention, Comprising: It is the partial permeation | transmission side view of the CFRP member seen from the arrow B direction of FIG. 5A. 本発明の実施例３によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、複数のＣＦＲＰ部材による配置を部分拡大して示す斜視図である。FIG. 7 is a perspective view showing an outline of a lattice structure that is a typical use example of a CFRP member according to Embodiment 3 of the present invention, and is a partially enlarged view showing an arrangement of a plurality of CFRP members. 本発明の実施例３によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、複数のＣＦＲＰ部材を接合して形成されたラティス構造を示す斜視図である。It is a perspective view showing the outline of the lattice structure which is a typical use example of the CFRP member by Example 3 of the present invention, and showing the lattice structure formed by joining a plurality of CFRP members. 本発明の実施例４によるＣＦＲＰ部材の概略を示す斜視図である。It is a perspective view which shows the outline of the CFRP member by Example 4 of this invention. 本発明の実施例４によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、複数のＣＦＲＰ部材による配置を部分拡大して示す斜視図である。FIG. 9 is a perspective view showing an outline of a lattice structure that is a typical use example of a CFRP member according to Example 4 of the present invention, and is a partially enlarged view showing an arrangement of a plurality of CFRP members. 本発明の実施例４によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、複数のＣＦＲＰ部材を接合して形成されたラティス構造を示す斜視図である。It is a perspective view showing the outline of the lattice structure which is the typical use example of the CFRP member by Example 4 of the present invention, and shows the lattice structure formed by joining a plurality of CFRP members.
＜実施例１＞
　図１は、本発明の実施例１によるＣＦＲＰ部材の構成を示す概要図であって、図１Ａは、その斜視図であり、図１Ｂは、ＣＦＲＰ部材に内包される炭素繊維体の配置を示す斜視図であり、図１Ｃは、図１Ａの矢印Ａ方向からみたＣＦＲＰ部材の部分透過側面図である。
　図１Ａに示すように、本発明の実施例１によるＣＦＲＰ部材１０は、同一の延在方向に延在する複数の炭素繊維束１３、１４、１５を積層した炭素繊維体１２が樹脂材料１１の内部に包み込まれた（埋め込まれた）構造を有している。　また、実施例１によるＣＦＲＰ部材１０は、２つの側面部１０ａとこれらを屈曲しつつ接続する接続部１０ｂとを含む形状をなしている。 <Example 1>
FIG. 1 is a schematic view showing a configuration of a CFRP member according to Embodiment 1 of the present invention, FIG. 1A is a perspective view thereof, and FIG. 1B shows an arrangement of carbon fiber bodies included in the CFRP member. 1C is a partially transparent side view of the CFRP member as viewed from the direction of arrow A in FIG. 1A.
As shown in FIG. 1A, the CFRP member 10 according to the first embodiment of the present invention has a carbon fiber body 12 in which a plurality of carbon fiber bundles 13, 14, 15 extending in the same extending direction are stacked. It has a structure embedded (embedded) inside. In addition, the CFRP member 10 according to the first embodiment has a shape including two side surface portions 10a and a connection portion 10b that connects them while bending them.
　ここで、本明細書における「炭素繊維束」とは、上記延在方向に連続的に炭素繊維を含む束状（帯状）の部材を意味するものであり、例えば、単一の炭素繊維、複数の炭素繊維を束状としたもの、あるいは短尺の炭素繊維を延在方向に連続的に並べて配置したもの等を含む。
　また、複数の炭素繊維を束状にする、あるいは短尺の炭素繊維を延在方向に連続的に並べて配置するにあたり、樹脂材料等のバインダを介して帯状となるように形成してもよい。 Here, the “carbon fiber bundle” in the present specification means a bundle-like (strip-shaped) member that continuously contains carbon fibers in the extending direction. For example, a single carbon fiber, a plurality of carbon fibers, In which carbon fibers are bundled or short carbon fibers are continuously arranged in the extending direction.
Further, when a plurality of carbon fibers are bundled or short carbon fibers are continuously arranged in the extending direction, they may be formed in a band shape through a binder such as a resin material.
　図１Ｂに示すように、炭素繊維体１２は、最下層に位置する第１の炭素繊維束１３と、中間層に位置する第２の炭素繊維束１４と、最上層に位置する第３の炭素繊維束１５と、により構成されている。
　炭素繊維束１３、１４、１５は、１本あるいは複数本の炭素繊維を上記所定の延在方向に沿って配置したものであり、ＣＦＲＰ部材の側面部１０ａ及び接続部１０ｂの位置と対応して、側面部１３ａ、１４ａ、１５ａと、接続部１３ｂ、１４ｂ、１５ｂと、をそれぞれ含む形状をなしている。 As shown in FIG. 1B, the carbon fiber body 12 includes a first carbon fiber bundle 13 located in the lowermost layer, a second carbon fiber bundle 14 located in the intermediate layer, and a third carbon located in the uppermost layer. And a fiber bundle 15.
The carbon fiber bundles 13, 14, and 15 are obtained by arranging one or a plurality of carbon fibers along the predetermined extending direction, and correspond to the positions of the side surface portion 10 a and the connection portion 10 b of the CFRP member. The side portions 13a, 14a and 15a and the connecting portions 13b, 14b and 15b are included.
　炭素繊維束１３、１４、１５は、図１Ｃに示すように、炭素繊維束１３の延在方向の全長Ｌ１３よりも炭素繊維束１５の延在方向の全長Ｌ１５が長くなるように設定されている。このとき、中間層に位置する炭素繊維束１４の全長は両者の中間となることが好ましい。
　このように、最下層に位置する炭素繊維束１３と最上層に位置する炭素繊維束１５との延在方向の全長を異なる長さとすることにより、ＣＦＲＰ部材１０の上面１０ｃと下面１０ｄとの長さ（図１Ｃにおける幅）も異なるものとなり、ＣＦＲＰ部材１０は、上下面に任意の曲線あるいは曲面を形成する。 As shown in FIG. 1C, the carbon fiber bundles 13, 14, 15 are set such that the total length L 15 in the extending direction of the carbon fiber bundle 15 is longer than the total length L 13 in the extending direction of the carbon fiber bundle 13. . At this time, it is preferable that the total length of the carbon fiber bundle 14 located in the intermediate layer is intermediate between the two.
In this way, the lengths of the upper surface 10c and the lower surface 10d of the CFRP member 10 are made different by making the total length in the extending direction of the carbon fiber bundle 13 located in the lowermost layer and the carbon fiber bundle 15 located in the uppermost layer different. The width (width in FIG. 1C) is also different, and the CFRP member 10 forms arbitrary curves or curved surfaces on the upper and lower surfaces.
　樹脂材料１１は、内部に炭素繊維体１２を内包した状態でその外面を被覆するように構成されており、例えば金型内での射出成形等の手法により形成することができる。
　ここで、樹脂材料１１としては、例えば一般的な熱可塑性樹脂等を例示することができ、熱間で射出成形することにより、金型内で所定の最終形状のＣＦＲＰ部材１０を製造することができる。 The resin material 11 is configured to cover the outer surface in a state in which the carbon fiber body 12 is included therein, and can be formed by a technique such as injection molding in a mold.
Here, as the resin material 11, for example, a general thermoplastic resin or the like can be exemplified, and the CFRP member 10 having a predetermined final shape can be manufactured in a mold by hot injection molding. it can.
　図２は、本発明の実施例１によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、図２Ａは、複数のＣＦＲＰ部材による配置を部分拡大して示す斜視図であり、図２Ｂは、複数のＣＦＲＰ部材を接合して形成されたラティス構造を示す斜視図である。
　図２Ａに示すように、図１で例示した実施例１によるＣＦＲＰ部材１０を複数個組み合わせてラティス構造（格子構造）を形成する。このとき、１つのＣＦＲＰ部材１０の側面部１０ａに他のＣＦＲＰ部材１０の側面部１０ａを接合し、さらに上記１つのＣＦＲＰ部材１０の接続部１０ｂに上記他のＣＦＲＰ部材１０とは別のＣＦＲＰ部材１０の接続部１０ｂを接合する。 FIG. 2 shows an outline of a lattice structure which is a typical use example of the CFRP member according to the first embodiment of the present invention. FIG. 2A is a perspective view showing a partially enlarged arrangement of a plurality of CFRP members. FIG. 2B is a perspective view showing a lattice structure formed by joining a plurality of CFRP members.
As shown in FIG. 2A, a lattice structure (lattice structure) is formed by combining a plurality of CFRP members 10 according to the first embodiment illustrated in FIG. At this time, the side surface portion 10a of another CFRP member 10 is joined to the side surface portion 10a of one CFRP member 10, and the CFRP member different from the other CFRP member 10 is further connected to the connection portion 10b of the one CFRP member 10. Ten connecting portions 10b are joined.
　このような接合部分を複数設けることにより、図２Ｂに示すように、複数のＣＦＲＰ部材１０に囲繞された複数の開口部１００ａを含み、任意の曲面形状を有するラティス構造１００が形成される。
　このとき、ラティス構造１００の交差点（交差部分）Ｃ１は、２つのＣＦＲＰ部材１０の接続部１０ｂが接合された構造となるため、当該交差点Ｃ１では２つの炭素繊維体が互いに平行に存在することとなり、単体のＣＦＲＰ部材１０に比べてより高い剛性を得ることができる。 By providing a plurality of such joint portions, as shown in FIG. 2B, a lattice structure 100 including a plurality of openings 100a surrounded by a plurality of CFRP members 10 and having an arbitrary curved surface shape is formed.
At this time, the intersection (intersection) C1 of the lattice structure 100 has a structure in which the connection portions 10b of the two CFRP members 10 are joined, and therefore, two carbon fiber bodies exist in parallel to each other at the intersection C1. As compared with the single CFRP member 10, higher rigidity can be obtained.
　上記のような構成を備えることにより、本発明の実施例１によるＣＦＲＰ部材は、任意の曲線あるいは曲面を構成した状態で積層した炭素繊維体を内包するため、高い剛性を確保しつつ、任意の３次元形状を備えた部材とすることが可能となる。
　また、本発明の実施例１によるＣＦＲＰ部材を複数接合してラティス構造とすることにより、交差部で炭素繊維体が交差することがなく、単体のＣＦＲＰ部材に比べてより高い剛性を得ることが可能となる。 By providing the configuration as described above, the CFRP member according to the first embodiment of the present invention includes a carbon fiber body laminated in a state in which an arbitrary curve or curved surface is configured. Therefore, while ensuring high rigidity, A member having a three-dimensional shape can be obtained.
Further, by joining a plurality of CFRP members according to Example 1 of the present invention to form a lattice structure, the carbon fiber body does not intersect at the intersecting portion, and higher rigidity can be obtained as compared with a single CFRP member. It becomes possible.
＜実施例２＞
　図３は、本発明の実施例２によるＣＦＲＰ部材の概略を示す斜視図である。
　図３に示すように、本発明の実施例２によるＣＦＲＰ部材は、図１に示した２つの側面部１０ａを鈍角の配置で接続部１０ｂで接続した第１のＣＦＲＰ部材１０に加えて、２つの側面部２０ａを鋭角の配置で接続部２０ｂで接続した第２のＣＦＲＰ部材２０を用いる。
　なお、第２のＣＦＲＰ部材２０は、実施例１の場合に対して角度配置の点以外は共通するため、再度の説明は省略する。 <Example 2>
FIG. 3 is a perspective view schematically showing a CFRP member according to Embodiment 2 of the present invention.
As shown in FIG. 3, the CFRP member according to the second embodiment of the present invention has two CFRP members in addition to the first CFRP member 10 in which the two side surface portions 10 a shown in FIG. The second CFRP member 20 in which the two side surface portions 20a are connected by the connection portion 20b in an acute angle arrangement is used.
Note that the second CFRP member 20 is the same as that of the first embodiment except for the angular arrangement, and thus the description thereof is omitted.
　図４は、本発明の実施例２によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、図４Ａは、複数のＣＦＲＰ部材による配置を部分拡大して示す斜視図であり、図４Ｂは、複数のＣＦＲＰ部材を接合して形成されたラティス構造を示す斜視図である。
　図４Ａに示すように、図３で例示したＣＦＲＰ部材１０とＣＦＲＰ部材２０とを複数個組み合わせてラティス構造（格子構造）を形成する。このとき、ＣＦＲＰ部材１０の側面部１０ａの一方の面にＣＦＲＰ部材２０の側面部２０ａを接合し、他方の面には別のＣＦＲＰ部材１０の接続部１０ｂを接合する。 FIG. 4 shows an outline of a lattice structure that is a typical use example of the CFRP member according to the second embodiment of the present invention. FIG. 4A is a perspective view showing a partially enlarged arrangement of a plurality of CFRP members. FIG. 4B is a perspective view showing a lattice structure formed by joining a plurality of CFRP members.
As shown in FIG. 4A, a lattice structure (lattice structure) is formed by combining a plurality of CFRP members 10 and CFRP members 20 illustrated in FIG. At this time, the side surface portion 20a of the CFRP member 20 is joined to one surface of the side surface portion 10a of the CFRP member 10, and the connection portion 10b of another CFRP member 10 is joined to the other surface.
　このような接合部分を複数設けることにより、図４Ｂに示すように、複数のＣＦＲＰ部材１０及び複数のＣＦＲＰ部材２０に囲繞された複数の開口部２００ａを含み、任意の曲面形状を有するラティス構造２００が形成される。
　このとき、ラティス構造２００の交差点（交差部分）Ｃ２は、一対のＣＦＲＰ部材１０の接続部１０ｂと一対のＣＦＲＰ部材２０の接続部２０ｂとが互いに対向する配置となり、単体のＣＦＲＰ部材に比べてより高い剛性が得られるとともに、互いが接合されていないため、変形に対する裕度を確保できる。 By providing a plurality of such joint portions, as shown in FIG. 4B, a lattice structure 200 including a plurality of openings 200 a surrounded by a plurality of CFRP members 10 and a plurality of CFRP members 20 and having an arbitrary curved surface shape. Is formed.
At this time, the intersection (intersection portion) C2 of the lattice structure 200 is arranged such that the connection portion 10b of the pair of CFRP members 10 and the connection portion 20b of the pair of CFRP members 20 face each other, and more than the single CFRP member. High rigidity can be obtained, and the tolerance to deformation can be ensured because they are not joined to each other.
＜実施例３＞
　図５は、本発明の実施例３によるＣＦＲＰ部材の構成を示す概要図であって、図５Ａは、その斜視図であり、図５Ｂは、ＣＦＲＰ部材に内包される炭素繊維体の配置を示す斜視図であり、図５Ｃは、図５Ａの矢印Ｂ方向からみたＣＦＲＰ部材の部分透過側面図である。
　図５Ａに示すように、本発明の実施例３によるＣＦＲＰ部材３０は、略ひし形の環状に形成された炭素繊維体３２（図５Ｂ参照）を樹脂材料３１の内部に含浸した構造を有している。 <Example 3>
FIGS. 5A and 5B are schematic views showing a configuration of a CFRP member according to Embodiment 3 of the present invention, FIG. 5A is a perspective view thereof, and FIG. 5B shows an arrangement of carbon fiber bodies included in the CFRP member. FIG. 5C is a partially transparent side view of the CFRP member as seen from the direction of arrow B in FIG. 5A.
5A, the CFRP member 30 according to the third embodiment of the present invention has a structure in which a resin material 31 is impregnated with a carbon fiber body 32 (see FIG. 5B) formed in a substantially diamond-shaped annular shape. Yes.
　実施例３によるＣＦＲＰ部材３０は、対向する２組の側面部３０ａとこれらを屈曲しつつ接続する２組の接続部３０ｂ及び３０ｃとを含む形状をなしている。
　接続部３０ｂは、隣り合う２つの側面部３０ａを鈍角で接続するように形成され、接続部３０ｂは、隣り合う２つの側面部３０ａを鋭角で接続するように形成される。 The CFRP member 30 according to the third embodiment has a shape including two sets of opposing side surface portions 30a and two sets of connection portions 30b and 30c which are connected while being bent.
The connecting portion 30b is formed so as to connect two adjacent side surface portions 30a at an obtuse angle, and the connecting portion 30b is formed so as to connect two adjacent side surface portions 30a at an acute angle.
　図５Ｂに示すように、炭素繊維体３２は、最下層に位置する第１の環状炭素繊維束３３と、中間層に位置する第２の環状炭素繊維束３４と、最上層に位置する第３の環状炭素繊維束３５と、により構成されている。
　環状炭素繊維束３３、３４、３５は、１本あるいは複数本の炭素繊維を略ひし形の環状部材として形成したものであり、ＣＦＲＰ部材の側面部３０ａ並びに接続部３０ｂ及び３０ｃの位置と対応して、側面部３３ａ、３４ａ、３５ａと、接続部３３ｂ、３３ｃ、３４ｂ、３４ｃ、３５ｂ、３５ｃと、をそれぞれ含む形状をなしている。 As shown in FIG. 5B, the carbon fiber body 32 includes a first annular carbon fiber bundle 33 located in the lowermost layer, a second annular carbon fiber bundle 34 located in the intermediate layer, and a third annular carbon fiber bundle located in the uppermost layer. Of the annular carbon fiber bundle 35.
The annular carbon fiber bundles 33, 34, and 35 are formed by forming one or a plurality of carbon fibers as a substantially diamond-shaped annular member, and correspond to the positions of the side surface portion 30a and the connection portions 30b and 30c of the CFRP member. The side portions 33a, 34a and 35a and the connecting portions 33b, 33c, 34b, 34c, 35b and 35c are included.
　環状炭素繊維束３３、３４、３５は、図５Ｃに示すように、例えば環状炭素繊維束３３の長軸方向の幅Ｄ３３よりも環状炭素繊維束３５の長軸方向の幅Ｄ３５が長くなるように設定されている。このとき、中間層に位置する環状炭素繊維束３４の長軸方向の幅は両者の中間となることが好ましい。
　このように、最下層に位置する環状炭素繊維束３３と最上層に位置する環状炭素繊維束３５との長軸方向の全長を異なる長さとすることにより、ＣＦＲＰ部材３０の上面３０ｄにおける周長と下面３０ｅにおける周長とが異なるものとなり、ＣＦＲＰ部材３０は、上下面に任意の曲線あるいは曲面を形成する。 As shown in FIG. 5C, for example, the annular carbon fiber bundles 33, 34, and 35 have a longer width D35 of the annular carbon fiber bundle 35 than a width D33 of the annular carbon fiber bundle 33 in the major axis direction. Is set. At this time, it is preferable that the width | variety of the major axis direction of the cyclic | annular carbon fiber bundle 34 located in an intermediate | middle layer becomes the middle of both.
As described above, the circumferential length of the upper surface 30d of the CFRP member 30 is made different by setting the total length in the major axis direction of the annular carbon fiber bundle 33 located in the lowermost layer and the annular carbon fiber bundle 35 located in the uppermost layer to be different. The circumferential length of the lower surface 30e is different, and the CFRP member 30 forms an arbitrary curve or curved surface on the upper and lower surfaces.
　樹脂材料３１は、実施例１の場合と同様に、内部に炭素繊維体３２を内包した状態でその外面を被覆するように構成されており、例えば金型内での射出成形等の手法により形成することができる。
　ここで、樹脂材料３１としては、例えば一般的な熱可塑性樹脂等を例示することができ、熱間で射出成形することにより、金型内で所定の最終形状のＣＦＲＰ部材３０を製造することができる。 As in the case of Example 1, the resin material 31 is configured to cover the outer surface with the carbon fiber body 32 encapsulated therein, and is formed by a technique such as injection molding in a mold, for example. can do.
Here, as the resin material 31, for example, a general thermoplastic resin or the like can be exemplified, and a CFRP member 30 having a predetermined final shape can be manufactured in a mold by hot injection molding. it can.
　図６は、本発明の実施例３によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、図６Ａは、複数のＣＦＲＰ部材による配置を部分拡大して示す斜視図であり、図６Ｂは、複数のＣＦＲＰ部材を接合して形成されたラティス構造を示す斜視図である。
　図６Ａに示すように、図５で例示した実施例３によるＣＦＲＰ部材３０を複数個組み合わせてラティス構造（格子構造）を形成する際に、１つのＣＦＲＰ部材３０の側面部３０ａに他のＣＦＲＰ部材３０の側面部３０ａを接合し、さらに上記１つのＣＦＲＰ部材１０において接続部３０ｂを挟んで隣り合う側面部３０ａに、上記他のＣＦＲＰ部材３０とは別のＣＦＲＰ部材３０の側面部３０ａを接合する。 FIG. 6 shows an outline of a lattice structure that is a typical use example of a CFRP member according to Embodiment 3 of the present invention. FIG. 6A is a perspective view showing a partially enlarged arrangement of a plurality of CFRP members. FIG. 6B is a perspective view showing a lattice structure formed by joining a plurality of CFRP members.
As shown in FIG. 6A, when a lattice structure (lattice structure) is formed by combining a plurality of CFRP members 30 according to the third embodiment illustrated in FIG. 5, another CFRP member is formed on the side surface 30a of one CFRP member 30. 30 side surfaces 30a are joined, and the side surface 30a of another CFRP member 30 different from the other CFRP members 30 is joined to the side surface 30a adjacent to the one CFRP member 10 with the connecting portion 30b interposed therebetween. .
　このような接合部分を複数設けることにより、図６Ｂに示すように、開口部３００ａを含む複数の環状のＣＦＲＰ部材３０がその側面部３０ａで互いに接合され、任意の曲面形状を有するラティス構造３００が形成される。
　このとき、ラティス構造３００の交差点（交差部分）Ｃ３は、環状のＣＦＲＰ部材３０の接続部３０ｂ及び３０ｃがそれぞれ一対で対向する配置となり、単体のＣＦＲＰ部材に比べてより高い剛性が得られるとともに、互いが接合されていないため、変形に対する裕度を確保できる。 By providing a plurality of such joint portions, as shown in FIG. 6B, a plurality of annular CFRP members 30 including the opening 300a are joined to each other at the side surface portion 30a, and a lattice structure 300 having an arbitrary curved surface shape is obtained. It is formed.
At this time, the intersection (intersection portion) C3 of the lattice structure 300 is arranged such that the connection portions 30b and 30c of the annular CFRP member 30 are opposed to each other in a pair, and higher rigidity is obtained compared to a single CFRP member. Since they are not joined to each other, a tolerance for deformation can be secured.
＜実施例４＞
　図７は、本発明の実施例４によるＣＦＲＰ部材の概略を示す斜視図である。
　図７に示すように、本発明の実施例４によるＣＦＲＰ部材４０は、複数の側面部４０ａとこれらを屈曲しつつ接続する複数の接続部４０ｂとが交互かつ連続的に形成された波打ち形状（コルゲート形状）をなしている。 <Example 4>
FIG. 7 is a perspective view schematically showing a CFRP member according to Embodiment 4 of the present invention.
As shown in FIG. 7, the CFRP member 40 according to the fourth embodiment of the present invention has a corrugated shape in which a plurality of side surface portions 40a and a plurality of connection portions 40b that are connected while being bent are alternately and continuously formed ( Corrugated shape).
　また、実施例４によるＣＦＲＰ部材４０は、実施例１の場合と同様に、その内部に同一の延在方向に延在する複数の炭素繊維束を積層した炭素繊維体を樹脂材料の内部に含浸した構造を有している。
　これらの炭素繊維体と樹脂材料との関係については、実施例１の図１において示したものを連続的に接続したものとして構成されるため改めての説明は省略するが、実施例１のＣＦＲＰ部材１０と同様に、ＣＦＲＰ部材４０は、上下面に任意の曲線あるいは曲面を形成する。 Further, as in the case of the first embodiment, the CFRP member 40 according to the fourth embodiment impregnates the inside of the resin material with a carbon fiber body in which a plurality of carbon fiber bundles extending in the same extending direction are laminated. It has the structure.
The relationship between the carbon fiber body and the resin material is configured as a continuous connection of the one shown in FIG. 1 of the first embodiment, and a description thereof is omitted, but the CFRP member of the first embodiment is omitted. Similarly to 10, the CFRP member 40 forms an arbitrary curve or curved surface on the upper and lower surfaces.
　図８は、本発明の実施例４によるＣＦＲＰ部材の代表的な使用例であるラティス構造の概要を示すものであって、図８Ａは、複数のＣＦＲＰ部材による配置を部分拡大して示す斜視図であり、図８Ｂは、複数のＣＦＲＰ部材を接合して形成されたラティス構造を示す斜視図である。
　図８Ａに示すように、図７で例示した実施例３によるＣＦＲＰ部材３０を複数個組み合わせてラティス構造（格子構造）を形成する際に、１つのＣＦＲＰ部材４０に連続的に形成されている接続部４０ｂと他のＣＦＲＰ部材４０に連続的に形成されている接続部４０ｂとを接合し、これら接続部４０ｂどうしの接合部（図８Ｂの交差点Ｃ４参照）をＣＦＲＰ部材４０の長手方向に千鳥状に配置する。 FIG. 8: shows the outline | summary of the lattice structure which is a typical usage example of the CFRP member by Example 4 of this invention, Comprising: FIG. 8A is a perspective view which expands partially and shows arrangement | positioning by several CFRP members. FIG. 8B is a perspective view showing a lattice structure formed by joining a plurality of CFRP members.
As shown in FIG. 8A, when a lattice structure (lattice structure) is formed by combining a plurality of CFRP members 30 according to the third embodiment illustrated in FIG. 7, a connection continuously formed on one CFRP member 40. The joint portion 40b and the connection portion 40b continuously formed on the other CFRP member 40 are joined, and the joint portions (see the intersection C4 in FIG. 8B) between these connection portions 40b are staggered in the longitudinal direction of the CFRP member 40. To place.
　このような接合部分を複数設けることにより、図８Ｂに示すように、複数のＣＦＲＰ部材４０に囲繞された複数の開口部４００ａを含み、任意の曲面形状を有するラティス構造４００が形成される。
　このとき、ラティス構造４００の交差点（交差部分）Ｃ４は、環状のＣＦＲＰ部材４０の接続部４０ｂがそれぞれ一対で対向する配置となり、単体のＣＦＲＰ部材に比べてより高い剛性が得られるとともに、他の実施例に比べて接合部の範囲を極小化できるため、ラティス構造の製造工程が容易となる。 By providing a plurality of such joint portions, as shown in FIG. 8B, a lattice structure 400 having a plurality of openings 400a surrounded by a plurality of CFRP members 40 and having an arbitrary curved surface shape is formed.
At this time, the intersection (intersection portion) C4 of the lattice structure 400 is disposed so that the connection portions 40b of the annular CFRP member 40 are opposed to each other in a pair, and higher rigidity is obtained as compared with a single CFRP member. Since the range of the joint portion can be minimized as compared with the embodiment, the manufacturing process of the lattice structure is facilitated.
　以上、本発明の実施例１～４によるＣＦＲＰ部材及びこれを用いたラティス構造体の構成を説明したが、本発明によるＣＦＲＰ部材は上記の具体例に限定されるものではなく、種々の改変を施すことができる。
　例えば、上記実施例１～４では、炭素繊維体を形成するにあたり、複数の炭素繊維束を個別に積層することによって構成した場合を例示したが、１本の炭素繊維あるいは１つの帯状の炭素繊維束を連続的に折り曲げて長さを調整しつつ積層する構造としてもよい。
　特に、実施例３で示した環状炭素繊維体を構成する際に、略螺旋状に炭素繊維束を形成して積層することも可能である。 The configuration of the CFRP member and the lattice structure using the CFRP member according to the first to fourth embodiments of the present invention has been described above. However, the CFRP member according to the present invention is not limited to the above specific example, and various modifications can be made. Can be applied.
For example, in the above Examples 1 to 4, a case where a plurality of carbon fiber bundles are individually laminated to form a carbon fiber body is illustrated, but one carbon fiber or one band-like carbon fiber is exemplified. It is good also as a structure laminated | stacked, bending a bundle | flux continuously and adjusting length.
In particular, when the annular carbon fiber body shown in Example 3 is configured, carbon fiber bundles can be formed in a substantially spiral shape and stacked.
　また、上記実施例１～４具体例では、ＣＦＲＰ部材を金型内に炭素繊維束を配置した状態で、熱間の射出成形を行うことにより所定の曲面形状を得る場合を例示したが、射出成形時の温度を樹脂材料が完全に硬化する温度よりも低い温度に設定し、ＣＦＲＰ部材の中間品を作成した後、所定の形状に最終調整し、改めて完全硬化温度まで加熱することにより、ＣＦＲＰ部材の最終形状を得るように構成してもよい。
　さらに、上記実施例１～４では、３層による炭素繊維体の場合を例示したが、その層数は複数であれば２層あるいは４層以上としてもよいことは当然である。 Further, in the specific examples 1 to 4 described above, the CFRP member is illustrated in the case where a predetermined curved surface shape is obtained by performing hot injection molding in a state where the carbon fiber bundle is disposed in the mold. After setting the molding temperature to a temperature lower than the temperature at which the resin material is completely cured, after making an intermediate product of the CFRP member, it is finally adjusted to a predetermined shape and then heated to the complete curing temperature again. You may comprise so that the final shape of a member may be obtained.
Further, in Examples 1 to 4 described above, the case of the carbon fiber body having three layers is exemplified, but it is natural that the number of layers may be two or four or more as long as the number is plural.
　なお、上記実施例１～４では、ＣＦＲＰ部材を製造するにあたり、炭素繊維体を金型内に配置した状態で樹脂材料を射出成形する場合を例示したが、プリプレグを用いたオートクレーブ成形やプレス成形、ＲＴＭ（Ｒｅｓｉｎ　Ｔｒａｎｓｆｅｒ　Ｍｏｌｄｉｎｇ）成形、インフュージョン成形、真空バッグ成形、テーププレースメント、あるいは３Ｄプリンティング等の公知の成形方法により、所定の形状となるように製造することも可能である。
　その他にも、本発明の要旨を逸脱しない範囲で上記実施例に種々の改変を施すことも可能である。 In Examples 1 to 4, the CFRP member is manufactured by exemplifying the case where the resin material is injection-molded with the carbon fiber body disposed in the mold. However, autoclave molding or press molding using a prepreg is exemplified. It is also possible to produce a predetermined shape by a known molding method such as RTM (Resin Transfer Molding) molding, infusion molding, vacuum bag molding, tape placement, or 3D printing.
In addition, various modifications can be made to the above-described embodiment without departing from the gist of the present invention.
１０、２０、３０、４０　ＣＦＲＰ部材
１０ａ、２０ａ、３０ａ、４０ａ　側面部
１０ｂ、２０ｂ、３０ｂ、３０ｃ、４０ｂ　接続部
１１、２１、３１、４１　樹脂材料
１２、３２　炭素繊維体
１３　第１の炭素繊維束
１４　第２の炭素繊維束
１５　第３の炭素繊維束
３３　第１の環状炭素繊維束
３４　第２の環状炭素繊維束
３５　第３の環状炭素繊維束
１００、２００、３００、４００　ラティス構造
１００ａ、２００ａ、３００ａ、４００ａ　開口部 10, 20, 30, 40 CFRP members 10a, 20a, 30a, 40a Side surface portions 10b, 20b, 30b, 30c, 40b Connection portions 11, 21, 31, 41 Resin material 12, 32 Carbon fiber body 13 First carbon fiber Bundle 14 Second carbon fiber bundle 15 Third carbon fiber bundle 33 First annular carbon fiber bundle 34 Second annular carbon fiber bundle 35 Third annular carbon fiber bundle 100, 200, 300, 400 Lattice structure 100a, 200a, 300a, 400a opening

Claims (3)

  1. 　所定の延在方向に延在する複数の炭素繊維束を積層した炭素繊維体が樹脂材料に内包されたＣＦＲＰ部材であって、
    　前記炭素繊維体の最下層に位置する炭素繊維束の長さと最上層に位置する炭素繊維束の長さとが異なる
    ことを特徴とするＣＦＲＰ部材。     A CFRP member in which a carbon fiber body in which a plurality of carbon fiber bundles extending in a predetermined extending direction are laminated is encapsulated in a resin material,
    A CFRP member, wherein a length of a carbon fiber bundle located in the lowermost layer of the carbon fiber body is different from a length of a carbon fiber bundle located in the uppermost layer.
  2. 　前記複数の炭素繊維束は、それぞれ環状に形成されている
    ことを特徴とする請求項１に記載のＣＦＲＰ部材。     The CFRP member according to claim 1, wherein each of the plurality of carbon fiber bundles is formed in an annular shape.
  3. 　請求項１又は２に記載されたＣＦＲＰ部材を複数個有し、前記ＣＦＲＰ部材の側面部の少なくとも一部が互いに接合されたラティス構造体。 A lattice structure comprising a plurality of the CFRP members according to claim 1 or 2, wherein at least a part of side surfaces of the CFRP members are joined to each other.
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