[특허]Composite material structure and method of manufacturing composite material structure

SUBARU CORPORATION

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Composite material structure and method of manufacturing composite material structure

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-005/02 B29C-070/34 B29C-070/00 B29C-065/00
출원번호	US-0259109 (2016-09-08)
등록번호	US-9931809 (2018-04-03)
우선권정보	JP-2015-178021 (2015-09-09)
발명자 / 주소	Kosugi, Yoshikazu Abe, Masakatsu Yasunaga, Yuichiro
출원인 / 주소	SUBARU CORPORATION
대리인 / 주소	McGinn IP Law Group, PLLC
인용정보	피인용 횟수 : 0 인용 특허 : 2

초록

According to one implementation, a composite material structure includes a first member and a second member. The first member has at least one first bonded surface. The second member has at least one second bonded surface to be bonded to the at least one first bonded surface. The second member is made of a composite material. At least one surface formed by fibers forming the composite material is used as the at least one second bonded surface by disposing end portions of the fibers, in the first member side, inside the composite material.

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1. A composite material structure comprising: a first member having at least one first bonded surface including a surface of a projecting convex portion, a section of the convex portion being a wedge shape; anda second member having at least one second bonded surface to be bonded to the at least one first bonded surface, the second member being made of a composite material,wherein end portions of sheet-like fibers forming the composite material are disposed inside the composite material by spreading a part of the sheet-like fibers in a V-shape corresponding to the convex portion and laminating the spread part of the sheet-like fibers on the at least one second bonded surface in directions perpendicular to the at least one second bonded surface, the end portions of the sheet-like fibers being formed on a side of the first member. 2. The composite material structure according to claim 1, wherein lengths of the sheet-like fibers forming the composite material are changed, and a lamination direction of a part of the sheet-like fibers forming the composite material is perpendicular to the at least one second bonded surface while a lamination direction of another part of the sheet-like fibers forming the composite material is a thickness direction of the second member, and the part of the sheet-like fibers being formed on a side of the first member and on the at least one second bonded surface, and the another part of the sheet-like fibers being formed on a side of the first member and separated from the at least one second bonded surface, the first member and the second member being platy. 3. A composite material structure comprising: a first member having at least one first bonded surface, the first member being made of a metal; anda second member having at least one second bonded surface to be bonded to the at least one first bonded surface, the second member being made of a composite material,wherein end portions of sheet-like fibers forming the composite material are disposed inside the composite material by laminating a part of the sheet-like fibers on the at least one second bonded surface in a direction perpendicular to the at least one second bonded surface, the end portions of the sheet-like fibers being formed on a side of the first member. 4. The composite material structure according to claim 3, wherein the first member is jointed to the second member by a scarf joint. 5. The composite material structure according to claim 4, wherein the at least one first bonded surface includes a surface of a projecting convex portion, a section of the convex portion being a wedge shape; andthe second member includes two sheets of sheet-like fibers, the two sheets being spread in a V-shape corresponding to the convex portion. 6. The composite material structure according to claim 3, wherein the at least one first bonded surface includes a surface of a projecting convex portion, a section of the convex portion being a wedge shape; andthe second member includes two sheets of sheet-like fibers, the two sheets being spread in a V-shape corresponding to the convex portion. 7. The composite material structure according to claim 3, wherein lengths of the sheet-like fibers forming the composite material are changed, and a lamination direction of a part of the sheet-like fibers forming the composite material is perpendicular to the at least one second bonded surface while a lamination direction of another part of the sheet-like fibers forming the composite material is a thickness direction of the second member, the part of the sheet-like fibers being formed on a side of the first member and on the at least one second bonded surface, and the another part of the sheet-like fibers being formed on a side of the first member and separated from the at least one second bonded surface, the first member and the second member being platy. 8. A method of manufacturing a composite material structure comprising: producing a platy laminated body of first prepregs, of which lengths are not same, by laminating the first prepregs to make at least one ends of the first prepregs become inside, the laminated body of the first prepregs having a surface to be bonded formed by a surface of one of the first prepregs, the surface to be bonded formed by the surface of the one of the first prepregs inclining to a thickness direction of the laminated body of the first prepregs;producing a platy laminated body of second prepregs, of which lengths are not same, by laminating the second prepregs to make at least one ends of the second prepregs become inside, the laminated body of the second prepregs having a surface to be bonded formed by a surface of one of the second prepregs, the surface to be bonded formed by the surface of the one of the second prepregs inclining to a thickness direction of the laminated body of the second prepregs; andheating and curing an object part to be bonded having two surfaces to be bonded, the laminated body of the first prepregs, and the laminated body of the second prepregs, which have been combined in a state where the thickness direction of the laminated body of the first prepregs is same as the thickness direction of the laminated body of the second prepregs, the surface to be bonded formed on the laminated body of the first prepregs is matched to one of the two surfaces of the object part and the surface to be bonded formed on the laminated body of the second prepregs is matched to another of the two surfaces of the object part, the two surfaces of the object part being surfaces of a projecting convex portion of which section is a wedge shape,wherein the object to be bonded constitutes a first member;wherein the platy laminated body of first prepregs and the platy laminated body of second prepregs constitute a second member being made of a composite material, andwherein the first and second prepregs comprise sheet-like fibers, and end portions of the sheet-like fibers form the composite material and are disposed inside the composite material by spreading a part of the sheet-like fibers in a V-shape corresponding to the convex portion and laminating the spread part of the sheet-like fibers on the two surfaces to be bonded in directions perpendicular to the two surfaces to be bonded, the end portions of the sheet-like fibers being formed on a side of the first member. 9. A method of manufacturing a composite material structure comprising: producing a platy laminated body of first prepregs, of which lengths are not same, by laminating the first prepregs to make at least one ends of the first prepregs become inside, the laminated body of the first prepregs having a surface to be bonded formed by a surface of one of the first prepregs, the surface to be bonded formed by the surface of the one of the first prepregs inclining to a thickness direction of the laminated body of the first prepregs;producing a platy laminated body of second prepregs, of which lengths are not same, by laminating the second prepregs to make at least one ends of the second prepregs become inside, the laminated body of the second prepregs having a surface to be bonded formed by a surface of one of the second prepregs, the surface to be bonded formed by the surface of the one of the second prepregs inclining to a thickness direction of the laminated body of the second prepregs;producing a platy first composite component and a platy second composite component by heating and curing the laminated body of the first prepregs and the laminated body of the second prepregs simultaneously or individually, the first composite component having a first surface to be bonded, the second composite component having a second surface to be bonded; andbonding an object part to be bonded having two surfaces to be bonded, the first composite component, and the second composite component, with an adhesive, in a state where a thickness direction of the first composite component is same as a thickness direction of the second composite component, the first surface of the first composite component is matched to one of the two surfaces of the object part and the second surface of the second composite component is matched to another of the two surfaces of the object part, the two surfaces of the object part being surfaces of a projecting convex portion of which section is a wedge shape,wherein the object part to be bonded constitutes a first member;wherein the platy first composite component and the platy second composite component constitute a second member being made of a composite material, andwherein the first and second prepregs comprise sheet-like fibers, and end portions of the sheet-like fibers form the composite material and are disposed inside the composite material by spreading a part of the sheet-like fibers in a V-shape corresponding to the convex portion and laminating the spread part of the sheet-like fibers on the two surfaces to be bonded in directions perpendicular to the two surfaces to be bonded, the end portions of the sheet-like fibers being formed on a side of the first member. 10. A composite material structure comprising: a platy first member having at least one first bonded surface; anda platy second member having at least one second bonded surface to be bonded to the at least one first bonded surface, the second member being made of a composite material,wherein end portions of sheet-like fibers forming the composite material are disposed inside the composite material by laminating a part of the sheet-like fibers on the at least one second bonded surface in a direction perpendicular to the at least one second bonded surface, the end portions of the sheet-like fibers being formed on a side of the first member;lengths of the sheet-like fibers forming the composite material are changed, and a lamination direction of the part of the sheet-like fibers forming the composite material is perpendicular to the at least one second bonded surface while a lamination direction of another part of the sheet-like fibers forming the composite material is a thickness direction of the second member, the part of the sheet-like fibers being formed on a side of the first member and on the at least one second bonded surface, and the another part of the sheet-like fibers being formed on a side of the first member and separated from the at least one second bonded surface; andend portions of the another part of the sheet-like fibers laminated in the thickness direction of the second member and end portions of the part of the sheet-like fibers laminated in the direction perpendicular to the at least one second bonded surface are disposed on a plane inclining to the thickness direction of the second member. 11. The composite material structure according to claim 10, wherein the first member is jointed to the second member by a scarf joint. 12. The composite material structure according to claim 11, wherein the at least one first bonded surface includes a surface of a projecting convex portion, a section of the convex portion being a wedge shape; andthe second member includes two sheets of sheet-like fibers, the two sheets being spread in a V-shape corresponding to the convex portion. 13. The composite material structure according to claim 10, wherein the at least one first bonded surface includes a surface of a projecting convex portion, a section of the convex portion being a wedge shape; andthe second member includes two sheets of sheet-like fibers, the two sheets being spread in a V-shape corresponding to the convex portion.

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