JP5206599B2 - 樹脂成形体である被締結部材に形成された締結用の貫通孔に配置される繊維強化複合材である補強部材及び貫通孔に補強部材が配置された被締結部材の締結構造 - Google Patents
樹脂成形体である被締結部材に形成された締結用の貫通孔に配置される繊維強化複合材である補強部材及び貫通孔に補強部材が配置された被締結部材の締結構造 Download PDFInfo
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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
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/22—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure
- B29C70/222—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least two directions forming a two dimensional structure the structure being shaped to form a three dimensional configuration
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
- B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
- B29C65/7823—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint
- B29C65/7826—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint said distance pieces being non-integral with the parts to be joined, e.g. particles
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
- B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
- B29C66/7214—Fibre-reinforced materials characterised by the length of the fibres
- B29C66/72141—Fibres of continuous length
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
- B29C66/73941—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset characterised by the materials of both parts being thermosets
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/737—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
- B29C66/7375—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
- B29C66/73751—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized
- B29C66/73752—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized the to-be-joined areas of both parts to be joined being uncured
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/10—Thermosetting resins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2305/00—Use of metals, their alloys or their compounds, as reinforcement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2307/00—Use of elements other than metals as reinforcement
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Description
また、前記補強部材が配置される被締結部材は強化繊維を含有するため、被締結部材においてクリープの原因である樹脂の量が減少する。そのため、被締結部材が強化繊維を含有しない場合と比べて被締結部材のクリープ抑制効果を高めることができる。
さらに、強化繊維を円筒形状に継ぎ目なく形成できるため、補強部材を貫通孔の内部に密着させられる。
加えて、フランジ部により締結部材の応力を分散させることができ、貫通孔の内部に配置された補強部材と被締結部材の間に生じる割れや亀裂が防止される。
請求項3に記載の本発明は、前記被締結部材の三次元繊維組織に前記補強部材の組紐状組織が組み合された後に樹脂を含浸することで前記補強部材と前記被締結部材を一体形成することを特徴とする。そのため、フランジ部が設けられた補強部材を被締結部材の貫通孔に固定することができ、さらに、補強部材を被締結部材の貫通孔に圧入する必要がないため、被締結部材に形成される貫通孔の加工精度や補強部材の圧入精度を高めなくてもよく加工が容易になる。
第1の実施形態を図1〜図3に基づいて説明する。なお、図示の都合上、一部の寸法を誇張して分かり易くしてある。このことは、他の実施形態でも同じである。
図3に示すように、被締結部材10は熱硬化性樹脂である樹脂をマトリックスとして束状の強化繊維である炭素繊維束11を含有し、板状に形成されている。被締結部材10において炭素繊維束11は、互いに直交するX,Y,Z軸方向に配向された三次元構造の三次元繊維組織に形成されている。
被締結部材10には締結部材であるボルト8が挿入される貫通孔4が形成されている。貫通孔4の断面はボルト8が挿入可能な径である円形に形成されている。被締結部材10の貫通孔4の内周面(貫通孔4の内部の周面)には補強部材1の円筒部5が隙間なく固定されている。被締結部材10における貫通孔4の上端及び下端には、円筒部5が配置されている。また、補強部材1の円筒部5の上端部から円形孔9の半径方向(貫通孔4の半径方向)外方に形成された第1フランジ部6が、被締結部材10の上面と当接して配置されている。補強部材1の円筒部5の下端部から円形孔9の半径方向(貫通孔4の半径方向)外方に形成された第2フランジ部が、被締結部材10の底面と当接して配置されている。
被締結部材10は次のように他の部材である金属材12と締結されている。金属材12は締結用の貫通孔13を有している。被締結部材10の下面と金属材12の上面とは対向して配置されており、被締結部材10に形成された締結用の貫通孔4の軸4aと、金属材12に形成された締結用の貫通孔13の軸13aとが一致している。締結部材であるボルト8は被締結部材10に形成された貫通孔4に挿入され、ボルト8の頭部8aにおける座面は第1フランジ部6からはみ出さずに配置されている。貫通孔4の内周面において、ボルト8と接触する領域に補強部材1の円筒部5が配置されており、貫通孔4の内周面は補強部材1の円筒部5が隙間なく固定されている。
束状の炭素繊維である炭素繊維束11を準備する。平板状の支持体において、支持体の所定の位置にボルト8の軸が挿入可能な径であるパイプを支持体のなす平面に対し垂直な方向(Z軸方向)に立てて配置する。支持体内に所定のピッチでピンを支持体のなす平面に対し垂直な方向(Z軸方向)に立てて配置する。パイプの設けられた領域を除いて、ピンに直交するX,Y軸方向に炭素繊維束11を折り返し状に配列し、炭素繊維束11が層状に形成された強化繊維層を形成する。
次に成形型を図示しない加熱手段によって三次元繊維組織及び組紐状組織を樹脂の熱硬化温度以上に加熱し、含浸した樹脂を硬化する。成形型の温度が低下した後に成形型を開き、樹脂が硬化した成形体を下型から取り出す。なお、成形体は三次元繊維組織及び組紐状組織並びにマトリックスとしての樹脂からなる繊維強化複合材であり、被締結部材10及び補強部材1が一体に形成されたものである。
被締結部材10における貫通孔4の内周面に補強部材1が固定されており、補強部材1において芯糸2が貫通孔4の軸4a方向(被締結部材10の板厚方向)を向いてかつ少なくとも貫通孔4の一方の開口部から他方の開口部に亘って連続して配向されており、芯糸2はボルト8の頭部8a及び金属材12と当接している。芯糸2の配向方向は被締結部材10に応力がかかる方向である。すなわち繊維軸と応力軸のなす角度は0°である。被締結部材10の貫通孔4にボルト8が挿入されて、被締結部材10が金属材12と締結された場合、ボルト8の締結による軸力は貫通孔4の内周面において、貫通孔4の軸4a方向を向いて配向された炭素繊維である芯糸2に分担される。被締結部材10のマトリックスである熱硬化性樹脂の圧縮弾性率に比べ、補強部材1において、芯糸2が貫通孔4の軸4a方向に配向された場合(繊維軸と応力軸のなす角度が0°である場合)の圧縮弾性率は40倍程度大きい。そのため、ボルト8の締結力による被締結部材10のマトリックスである樹脂のクリープが抑制され、被締結部材10の変形を防ぐことができる。
さらに、補強部材1を被締結部材10の貫通孔4に圧入する必要がないため、被締結部材10に形成される貫通孔4の加工精度や補強部材1の圧入精度を高めなくてもよく加工が容易になる。
また、補強部材1が固定された被締結部材10においては、被締結部材10を廃棄する際に被締結部材10とインサートされた金属製の別部材とを分離する必要がないため、リサイクル時にかかるコストを低減できる。
(1)ボルト8が挿入される貫通孔4を有し被締結部材10のマトリックスとしての熱硬化性樹脂よりも圧縮弾性率が大きい補強部材1は被締結部材10の貫通孔4の内周面に固定され、貫通孔4の内周面において芯糸2は貫通孔4の軸4a方向を向きかつ少なくとも貫通孔4の一方の開口部から他方の開口部に亘って連続して配向されている。貫通孔4の軸4a方向を向いて芯糸2が配向された場合における補強部材1の弾性率は熱硬化性樹脂よりも大きいため、貫通孔4にボルト8が挿入されて被締結部材10が金属材12と締結された場合において、ボルト8の応力による被締結部材10のクリープ変形を抑制することができる。
図4及び図5に示す第2の実施形態は、第1の実施形態における補強部材1の形状及び補強部材1における芯糸2の配向方向を変更したもので、第1の実施形態と同一の構成については同一の符号を付し、詳細な説明を省略する。
4 貫通孔
4a 軸
6 第1フランジ部
7 第2フランジ部
8 ボルト
10 被締結部材
12 金属材
14 ナット
15 補強部材
18 被締結部材
20 貫通孔
20a 軸
21 金属材
23 ボルト
24 ナット
Claims (3)
- 締結部材が挿入可能な繊維強化複合材である被締結部材の貫通孔の内部に配置される補強部材であり、
樹脂をマトリックスとして強化繊維を含有する繊維強化複合材である補強部材において、
前記強化繊維は組紐状組織に形成されており、
前記補強部材の少なくとも一部の強化繊維は前記貫通孔の軸方向を向きかつ少なくとも前記貫通孔の一方の開口部から他方の開口部に亘って配向され、
前記補強部材は前記貫通孔の少なくとも一方の開口部から前記貫通孔の半径方向外方に
突出して設けられかつ前記被締結部材と当接するフランジ部を有することを特徴とする補強部材。 - 締結部材と、
前記締結部材が挿入可能な貫通孔を有する繊維強化複合材である被締結部材と、
樹脂をマトリックスとして強化繊維を含有する繊維強化複合材である補強部材と、
前記被締結部材と締結される他の部材とからなり、
前記締結部材により前記被締結部材が前記他の部材に締結される被締結部材の締結構造において、
前記補強部材は前記貫通孔の内部に配置され、
前記強化繊維は組紐状組織に形成されており、
前記補強部材の少なくとも一部の前記強化繊維は前記貫通孔の軸方向を向きかつ少なくとも前記貫通孔の一方の開口部から他方の開口部に亘って配向され、
前記補強部材は前記貫通孔の少なくとも一方の開口部から前記貫通孔の半径方向外方に
突出して設けられかつ前記被締結部材と当接するフランジ部を有することを特徴とする被締結部材の締結構造。 - 前記被締結部材の三次元繊維組織に前記補強部材の組紐状組織が組み合された後に樹脂を含浸することで前記補強部材と前記被締結部材を一体形成する請求項2に記載の被締結部材の締結構造。
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PCT/JP2010/060116 WO2010150682A1 (ja) | 2009-06-22 | 2010-06-15 | 補強部材及びその補強部材を用いた締結構造 |
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