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JP4440684B2 - Mounting structure of fiber reinforced plastic energy absorbing member - Google Patents

Mounting structure of fiber reinforced plastic energy absorbing member Download PDF

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Publication number
JP4440684B2
JP4440684B2 JP2004092192A JP2004092192A JP4440684B2 JP 4440684 B2 JP4440684 B2 JP 4440684B2 JP 2004092192 A JP2004092192 A JP 2004092192A JP 2004092192 A JP2004092192 A JP 2004092192A JP 4440684 B2 JP4440684 B2 JP 4440684B2
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energy absorbing
absorbing member
reinforced plastic
fiber reinforced
frp
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JP2005271872A (en
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勉 西田
恭介 八角
彰彦 北野
真明 山崎
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Nissan Motor Co Ltd
Toray Industries Inc
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Nissan Motor Co Ltd
Toray Industries Inc
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Description

本発明は、衝撃時のエネルギー吸収特性を向上させた補強繊維と樹脂とからなる繊維強化プラスチック(以下FRPと略す)製エネルギー吸収部材の取付け構造に関し、特に、車両のフロントサイドメンバに好適なFRP製エネルギー吸収部材の取付け構造に関するものである。   The present invention relates to a structure for mounting an energy absorbing member made of fiber reinforced plastic (hereinafter abbreviated as FRP) made of reinforcing fiber and resin having improved energy absorption characteristics at impact, and particularly FRP suitable for a front side member of a vehicle. The present invention relates to a structure for mounting an energy absorbing member.

従来から衝撃時のエネルギー吸収特性を向上させた補強繊維と樹脂とからなるFRP製エネルギー吸収部材は複数提案されている(特許文献1〜7参照)。   Conventionally, a plurality of FRP energy absorbing members made of a reinforcing fiber and a resin having improved energy absorption characteristics upon impact have been proposed (see Patent Documents 1 to 7).

このようなFRP製エネルギー吸収部材は、軸方向の入力荷重があった時に、部材前端側から逐次圧壊を起こすことで、従来一般に使用されているスチールを材料としたエネルギー吸収部材に対しエネルギー吸収効率が良いことが知られている。そのため、例えば、車両部品では衝突時のエネルギー吸収を司る部位、例えば、前面衝突時の衝撃エネルギー吸収を行うフロントサイドメンバの前端部分などに応用することが可能である。
特開平04−143173号公報 特開平05−332386号公報 特開平06−300070号公報 特開平06−341477号公報 特開平06−346935号公報 特開平07−217688号公報 特開平09−226039号公報
Such an energy absorption member made of FRP has an energy absorption efficiency compared to an energy absorption member made of steel that is generally used in the past by causing successive collapse from the front end side of the member when there is an input load in the axial direction. Is known to be good. Therefore, for example, in vehicle parts, it can be applied to a part that controls energy absorption at the time of a collision, for example, a front end part of a front side member that absorbs impact energy at the time of a frontal collision.
Japanese Patent Laid-Open No. 04-143173 JP 05-332386 A Japanese Patent Laid-Open No. 06-300070 Japanese Patent Laid-Open No. 06-341477 Japanese Patent Laid-Open No. 06-346935 JP 07-217688 A Japanese Patent Application Laid-Open No. 09-226039

ところで、上記FRP製エネルギー吸収部材の部材前端側から逐次圧壊は、筒状をなす肉厚の中央部分を境として、内周側部分は半径方向内側へ、また外周側部分は半径方向外側へ夫々開く状態で圧壊する、いわゆるフラワーリングという圧壊形式で逐次圧壊してゆく。半径方向内側へ圧壊された破片は、エネルギー吸収部材の筒状の空間に溜まる。このため、逐次圧壊が進んで残りの空間容積と空間内に溜まっていく圧壊破片の容積とが略等しくなる段階で、圧壊破片を圧縮する状態となり、エネルギー吸収部材のエネルギー吸収作動が停止される。したがって、エネルギー吸収部材の全長に亘ってエネルギー吸収作動させることができず、必要なエネルギー吸収長さに加えて、半径方向内側への圧壊破片を収容する空間容積分の長さのエネルギー吸収部材を余分に必要とし、車両に適用する場合には、重量や車体長の増加を招くものであった。   By the way, the successive crushing from the front end side of the FRP energy absorbing member is performed such that the inner peripheral side portion is radially inward and the outer peripheral side portion is radially outward with the cylindrical central portion as a boundary. Crushing in the open state, so-called flower ring. The fragments crushed inward in the radial direction accumulate in the cylindrical space of the energy absorbing member. For this reason, when the crushing progresses and the remaining space volume and the volume of the crushing fragments accumulated in the space become substantially equal, the crushing fragments are compressed, and the energy absorbing operation of the energy absorbing member is stopped. . Therefore, the energy absorbing member cannot be operated over the entire length of the energy absorbing member, and in addition to the necessary energy absorbing length, the energy absorbing member having a length corresponding to the space volume that accommodates the crushing fragments radially inward is provided. When it is necessary and is applied to a vehicle, the weight and the length of the vehicle body are increased.

そこで本発明は、上記問題点に鑑みてなされたもので、重量や車体長を増加させることなく車両に適用可能なFRP製エネルギー吸収部材の取付け構造を提供することを目的とする。   Accordingly, the present invention has been made in view of the above problems, and an object thereof is to provide an FRP energy absorbing member mounting structure that can be applied to a vehicle without increasing the weight or the vehicle body length.

本発明は、軸方向からの入力荷重により入力端側から半径方向外側と半径方向内側に開く状態で逐次圧壊を起こすよう補強繊維と樹脂とからなる筒状断面の繊維強化プラスチック製エネルギー吸収部材と、内部に成形用コアを備えて繊維強化プラスチックにより筒状断面に形成され、前記繊維強化プラスチック製エネルギー吸収部材に筒状断面の端部が接合された支持部材と、からなり、前記成型用コアの端部に設けた穴により、前記支持部材の端部に前記エネルギー吸収部材の内部空間に連なる空間を形成するようにした。 The present invention relates to a fiber reinforced plastic energy absorbing member having a cylindrical cross section made of a reinforcing fiber and a resin so as to cause successive crushing in a state where the input load from the axial direction opens radially outward and radially inward from the input end side. , includes a molding core therein is formed in a cylindrical shape cross section by fiber-reinforced plastic, a supporting member end portion of the tubular cross-section to the fiber-reinforced plastic energy-absorbing member is joined, made, the molding core With the hole provided in the end portion, a space that is continuous with the internal space of the energy absorbing member is formed in the end portion of the support member.

したがって、本発明では、軸方向からの入力荷重により入力端側から半径方向外側と半径方向内側に開く状態で逐次圧壊を起こすよう補強繊維と樹脂とからなる筒状断面の繊維強化プラスチック製エネルギー吸収部材と、内部に成形用コアを備えて繊維強化プラスチックにより筒状断面に形成され、前記繊維強化プラスチック製エネルギー吸収部材に筒状断面の端部が接合された支持部材と、からなり、前記成型用コアの端部に設けた穴により、前記支持部材の端部に前記エネルギー吸収部材の内部空間に連なる空間を形成したため、衝撃力がエネルギー吸収部材に入力され、エネルギー吸収部材が肉厚中央を境に順次半径方向外側と半径方向内側とに開く状態で逐次圧壊しながら衝撃エネルギーを吸収する際の半径方向内側への逐次圧壊破片を、エネルギー吸収部材内に溜めることなく、支持部材の端部の空間内に収容でき、意図したエネルギー吸収作動をさせることができる。このため、重量や車体長を増加させることなく車両に適用可能なFRP製エネルギー吸収部材の取付け構造とすることができる。
しかも、前記空間は、前記成形用コアの端部に設けた穴により形成したため、成形時にこの穴を利用してエネルギー吸収部材および成形用コアを位置決めすることができる。
Therefore, in the present invention, energy absorption made of fiber reinforced plastic having a cylindrical cross section made of a reinforcing fiber and a resin so as to cause successive crushing in a state where the input load from the axial direction opens radially outward and radially inward from the input end side. and member, provided with a molding core therein is formed in a cylindrical shape cross section by fiber-reinforced plastic, a supporting member end portion of the tubular section is joined to the fiber-reinforced plastic energy absorbing member made of the molding The space provided in the end portion of the core for the core forms a space continuous with the internal space of the energy absorbing member at the end portion of the supporting member, so that the impact force is input to the energy absorbing member, and the energy absorbing member passes through the center of the wall thickness. Sequential crushing inward in the radial direction when absorbing impact energy while sequentially crushing in a state of opening radially outward and radially inward at the boundary And without accumulating the energy absorbing member, be accommodated in the space of the end of the supporting member, it can be an energy absorbing operation intended. For this reason, it can be set as the attachment structure of the energy absorption member made from FRP applicable to a vehicle, without increasing a weight or a vehicle body length.
In addition, since the space is formed by a hole provided at the end of the molding core, the energy absorbing member and the molding core can be positioned using the hole during molding.

以下、本発明のFRP製エネルギー吸収部材の取付け構造を一実施形態に基づいて説明する。   Hereinafter, the FRP energy absorbing member mounting structure of the present invention will be described based on an embodiment.

図1〜図6は、本発明を適用したFRP製エネルギー吸収部材の取付け構造の第1実施形態を示し、図1はFRP製エネルギー吸収部材の取付け構造を車体の前部フレーム構造に適用した斜視図、図2はFRP製エネルギー吸収部材の取付け構造を含むフロントサイドメンバの側面図、図3はフロントサイドメンバの各部の断面図、図4はFRP製エネルギー吸収部材の取付け構造の断面図、図5はFRP製エネルギー吸収部材の逐次圧壊状態を示す作動図、図6はFRP製エネルギー吸収部材の取付け構造の第2実施例の断面図である。   1 to 6 show a first embodiment of an FRP energy absorbing member mounting structure to which the present invention is applied. FIG. 1 is a perspective view of an FRP energy absorbing member mounting structure applied to a front frame structure of a vehicle body. 2 is a side view of the front side member including the FRP energy absorbing member mounting structure, FIG. 3 is a sectional view of each part of the front side member, and FIG. 4 is a sectional view of the FRP energy absorbing member mounting structure. FIG. 5 is an operation diagram showing a sequential collapse state of the FRP energy absorbing member, and FIG. 6 is a sectional view of a second embodiment of the FRP energy absorbing member mounting structure.

図1において、車体の前部フレーム構造は、車体幅方向の両端部に車両前後方向に平行に配置したフロントサイドメンバSMを備える。このフロントサイドメンバSMの車両前方端部には、図示しない取付けフランジを介してラジエータ取付け枠(ラジエータコアサポート)やバンパーレインフォースが取付けられる。フロントサイドメンバSMの上部にはフードリッジパネルFR、車両後方には車室を構成するダッシュロアクロスメンバやカウルサイドパネルが夫々配設・結合されている。フードリッジパネルFRには、フェンダFが脱着可能に固定される。   In FIG. 1, the front frame structure of the vehicle body includes front side members SM arranged in parallel to the vehicle longitudinal direction at both ends in the vehicle body width direction. A radiator mounting frame (radiator core support) and a bumper reinforcement are attached to a front end portion of the front side member SM via a mounting flange (not shown). A hood ridge panel FR is disposed and coupled to the upper portion of the front side member SM, and a dash lower cross member and a cowl side panel constituting a vehicle compartment are disposed and coupled to the rear of the vehicle. A fender F is detachably fixed to the hood ridge panel FR.

前記フロントサイドメンバSMは、図2および図3に示すように、車両に対する後半部分を繊維強化樹脂により支持部材1として形成し、その前半部分は補強繊維と樹脂とからなるFRP製エネルギー吸収部材2により形成し、両者を接着等により接合して構成する。   As shown in FIGS. 2 and 3, the front side member SM has a rear half of the vehicle as a support member 1 made of fiber reinforced resin, and the front half of the front side member SM is made of FRP energy absorbing member 2 made of reinforcing fibers and resin. And are formed by bonding the two together by adhesion or the like.

前記FRP製エネルギー吸収部材2は、単純な四角形や円形等の筒状に形成され、前端に図示しない取付けフランジを介してラジエータ取付け枠(ラジエータコアサポート)やバンパーレインフォースが取付けられ、前面衝突時に部材前端側から逐次圧壊を起こすことで衝撃エネルギー吸収するエネルギー吸収機能を備える。エネルギー吸収部材2は、円柱体でも、角柱体でも、あるいはテーパ付き柱状体でも良い。FRP製エネルギー吸収部材2は、例えば、フィラメントワインディング、プルワインディング、プルトルージョン、シートワインディング、ブレイディング工法等で製作することができる。FRPの補強繊維としては、炭素繊維あるいはガラス繊維などの高強度繊維が好ましい。   The FRP energy absorbing member 2 is formed in a simple square or circular cylinder shape, and a radiator mounting frame (radiator core support) or a bumper reinforcement is attached to the front end via a mounting flange (not shown). It has an energy absorption function that absorbs impact energy by causing successive crushing from the front end side of the member. The energy absorbing member 2 may be a cylindrical body, a prismatic body, or a tapered columnar body. The FRP energy absorbing member 2 can be manufactured by, for example, filament winding, pull winding, pultrusion, sheet winding, braiding, or the like. As the reinforcing fiber of FRP, high-strength fiber such as carbon fiber or glass fiber is preferable.

前記支持部材1は、エンジンやサスペンションを保持し、前記した各車体部品と接合されており、内部に補強構造や他部品との接合のためのボルト・ナット等を備えた複雑な3次元形状となっている。このため、繊維強化プラスチック(FRP)で製作する場合には、一般的な3次元形状の製作工法である補強繊維の織物を裁断して硬質発泡ウレタン等のコア(型)と前記したFRP製エネルギー吸収部材2の基部2Aをインサートとして、これらに積層し樹脂を含浸させて加熱硬化させるRTM工法(熱硬化性樹脂成形若しくはトランスファ成形、Resin Transfer Molding)を利用する。   The support member 1 holds an engine and a suspension and is joined to each of the vehicle body parts described above, and has a complicated three-dimensional shape including a bolt and a nut for joining a reinforcing structure and other parts inside. It has become. For this reason, when manufacturing with fiber reinforced plastic (FRP), the reinforcing fiber fabric, which is a general three-dimensional manufacturing method, is cut into a core (mold) such as rigid urethane foam and the above-mentioned FRP energy. An RTM method (thermosetting resin molding or transfer molding, Resin Transfer Molding) in which the base portion 2A of the absorbent member 2 is used as an insert, laminated on the base material, impregnated with resin, and cured by heating is used.

成形に使用されたコア材は、成形後に抜取られるが、抜取りが不可能な複雑な中空形状の場合には、発泡コア材等の軽量な材質でコア材を製作し、成形後は製品の中に残しておいてもよい。フロントサイドメンバSMの支持部材1部分をFRPで成形する場合には、内部に強度上必要なリブを配したり、他の構造部品との結合の為の金属部品を埋め込むため、成形後コア材を取出せない中空形状となり、発泡コアを残すようにする。使用する発泡コア3は、軽量化のために、硬質発泡コアを利用する。硬質発泡コアの材質としては、ウレタン、アクリル、ポリイミド等が挙げられる。   The core material used for molding is extracted after molding, but in the case of a complicated hollow shape that cannot be extracted, the core material is manufactured with a lightweight material such as a foamed core material. You may leave it in. When molding the support member 1 part of the front side member SM with FRP, a core material after molding is provided in order to embed ribs necessary for strength and to embed metal parts for coupling with other structural parts. It becomes a hollow shape that cannot be removed, leaving a foam core. The foam core 3 to be used uses a hard foam core for weight reduction. Examples of the material of the hard foam core include urethane, acrylic, and polyimide.

具体的には、図4に示すように、発泡コア3のFRP製エネルギー吸収部材2と接する部分には、エネルギー吸収部材2の内部空間に連なる穴4を形成し、この穴4とエネルギー吸収部材2の内部空間とに嵌合する位置決め部材を挿入して、発泡コア3とエネルギー吸収部材2とを位置決めする。そして、エネルギー吸収部材2の基部2Aおよび発泡コア3の周囲に、補強繊維の織物を複数層に積層し、これら補強繊維に樹脂を含浸させて加熱・硬化させることで、支持部材1の成形段階でエネルギー吸収部材2を一体的に接着・固定する。   Specifically, as shown in FIG. 4, a hole 4 connected to the internal space of the energy absorbing member 2 is formed in a portion of the foam core 3 that contacts the FRP energy absorbing member 2, and the hole 4 and the energy absorbing member are formed. The foaming core 3 and the energy absorbing member 2 are positioned by inserting a positioning member that fits into the internal space 2. Then, around the base portion 2A of the energy absorbing member 2 and the foamed core 3, a reinforcing fiber fabric is laminated in a plurality of layers, and the reinforcing fiber is impregnated with a resin and heated and cured, thereby forming the support member 1 in a molding stage. Then, the energy absorbing member 2 is integrally bonded and fixed.

以上の構成のFRP製エネルギー吸収部材の取付け構造においては、図5(A)に示す初期状態から、ラジエータ取付け枠やバンパーレインフォース等の他の取付け部品からFRP製エネルギー吸収部材2に衝突荷重が軸方向に加わると、図5(B)に示すように、エネルギー吸収部材2は半径方向外側と半径方向内側に開く形で逐次圧壊を起こし、衝撃エネルギーを吸収していく。   In the FRP energy absorbing member mounting structure having the above-described configuration, a collision load is applied to the FRP energy absorbing member 2 from other mounting parts such as a radiator mounting frame and a bumper reinforcement from the initial state shown in FIG. When applied in the axial direction, as shown in FIG. 5 (B), the energy absorbing member 2 sequentially collapses in such a manner as to open radially outward and radially inward, and absorbs impact energy.

半径方向外側への圧壊破片10は周辺に飛散するが、半径方向内側への圧壊破片11はエネルギー吸収部材2の内部空間に入り込み、その先端が前記硬質発泡ウレタンコア3で形成した空間4の底部に当接した段階で破砕されて空間4内に溜まってゆく。   Although the radially crushed pieces 10 are scattered around the periphery, the radially crushed pieces 11 enter the internal space of the energy absorbing member 2, and the tip of the space 4 formed by the rigid foamed urethane core 3 at the tip thereof. It is crushed and collected in the space 4 at the stage where it abuts.

図5(C)に示すように、エネルギー吸収が進んだ状態においても、硬質発泡ウレタンコア3で形成した空間4には圧壊破片で満たされることがなく余裕があり、エネルギー吸収部材2は逐次圧壊によるエネルギー吸収を継続する。したがって、エネルギー吸収部材2の設定したエネルギー吸収長さの全長で逐次圧壊によるエネルギー吸収をさせることができ、意図したエネルギー吸収性能を発揮する。   As shown in FIG. 5 (C), even in a state where energy absorption has progressed, the space 4 formed by the hard foamed urethane core 3 has a margin without being filled with crushing debris, and the energy absorbing member 2 is successively crushed. Continue to absorb energy. Therefore, energy absorption by successive crushing can be performed over the entire length of the energy absorption length set by the energy absorbing member 2, and the intended energy absorption performance is exhibited.

図6に示す第2実施例のエネルギー吸収部材の取付け構造においては、後端が閉じ且つ前端が開口した、例えば、FRPで形成した筒部材5を支持部材1の成形時にエネルギー吸収部材2と共にインサートしておき、支持部材1の成形段階でエネルギー吸収部材2とともに一体的に接着・固定するようにしたものである。この構造においても、筒部材5の内部空間4にエネルギー吸収部材2の半径方向内側への圧壊破片11を収容させることができ、第1実施例と同様に作動させることができる。   In the energy absorbing member mounting structure of the second embodiment shown in FIG. 6, the cylindrical member 5 formed of, for example, FRP with the rear end closed and the front end opened is inserted together with the energy absorbing member 2 when the support member 1 is molded. In addition, the support member 1 is integrally bonded and fixed together with the energy absorbing member 2 at the stage of forming the support member 1. Also in this structure, the crushing debris 11 radially inward of the energy absorbing member 2 can be accommodated in the internal space 4 of the cylindrical member 5, and can be operated in the same manner as in the first embodiment.

本実施形態においては、以下に記載する効果を奏することができる。   In the present embodiment, the following effects can be achieved.

(ア)軸方向からの入力荷重により入力端側から逐次圧壊を起こすよう補強繊維と樹脂とからなる筒状断面のFRP製エネルギー吸収部材2と、前記FRP製エネルギー吸収部材2に筒状断面の端部が接合され、成形用コア3を内部に備えて繊維強化プラスチックで形成された支持部材1とからなり、前記支持部材1の端部に前記エネルギー吸収部材2の内部空間に連なる空間4を形成したため、衝撃力がエネルギー吸収部材2に入力され、エネルギー吸収部材2が肉厚中央を境に順次半径方向外側と半径方向内側とに開く状態で逐次圧壊しながら衝撃エネルギーを吸収する際の半径方向内側への逐次圧壊破片11を、エネルギー吸収部材2内に溜めることなく、支持部材1の端部の空間4内に収容でき、意図したエネルギー吸収作動をさせることができる。このため、重量や車体長を増加させることなく車両に適用可能なFRP製エネルギー吸収部材2の取付け構造とすることができる。   (A) An FRP energy absorbing member 2 having a cylindrical cross section made of a reinforcing fiber and a resin so as to cause successive crushing from the input end side due to an input load from the axial direction, and the FRP energy absorbing member 2 having a cylindrical cross section The support member 1 is formed of a fiber reinforced plastic with an end portion joined and a molding core 3 provided therein, and a space 4 connected to the internal space of the energy absorbing member 2 is formed at the end portion of the support member 1. Since the impact force is input to the energy absorbing member 2, the energy absorbing member 2 absorbs the impact energy while sequentially crushing in a state where the energy absorbing member 2 sequentially opens radially outward and radially inward from the thickness center. The sequential crushing fragments 11 inward in the direction can be accommodated in the space 4 at the end of the support member 1 without accumulating in the energy absorption member 2, and the intended energy absorption operation can be performed. It is possible. For this reason, it can be set as the attachment structure of the energy absorption member 2 made from FRP applicable to a vehicle, without increasing a weight and vehicle body length.

(イ)図4に示す空間4は、前記成形用コア3の端部に設けた穴により形成したため、成形時にこの穴を利用してエネルギー吸収部材2および成形用コア3を位置決めすることができる。   (A) Since the space 4 shown in FIG. 4 is formed by a hole provided at the end of the molding core 3, the energy absorbing member 2 and the molding core 3 can be positioned using the hole during molding. .

(ウ)図6に示す空間4は、前記支持部材1の筒状断面の内面に嵌合させた有底の筒部材5により形成したため、支持部材1の端部の強度およびエネルギー吸収部材2の軸方向支持強度を向上させ、エネルギー吸収部材2のエネルギー吸収作動を確実化できる。   (C) Since the space 4 shown in FIG. 6 is formed by the bottomed cylindrical member 5 fitted to the inner surface of the cylindrical cross section of the supporting member 1, the strength of the end of the supporting member 1 and the energy absorbing member 2 The axial support strength can be improved, and the energy absorbing operation of the energy absorbing member 2 can be ensured.

(エ)空間4は、前記エネルギー吸収部材2の逐次圧壊する体積の半分以上の容積を備えるため、圧壊したエネルギー吸収部材2の破片11がエネルギー吸収部材2内に溜まることなく、その全てを空間4内に収容でき、意図したエネルギー吸収長さでエネルギー吸収部材2を逐次圧壊をさせることができる。   (D) Since the space 4 has a volume that is more than half the volume of the energy absorbing member 2 that is sequentially collapsed, the fragments 11 of the collapsed energy absorbing member 2 do not accumulate in the energy absorbing member 2, and all of the space 4 is space. 4, the energy absorbing member 2 can be sequentially crushed with the intended energy absorption length.

なお、上記実施形態において、FRP製エネルギー吸収部材2の支持部材1への接合形態として、エネルギー吸収部材2を支持部材1の端部内に嵌合させたものについて説明したが、図示はしないが、エネルギー吸収部材2を支持部材1の端部の外周に嵌合させたものであってもよい。   In the above embodiment, the FRP energy absorbing member 2 is joined to the support member 1 in the form of the energy absorbing member 2 fitted into the end portion of the supporting member 1, although not shown in the drawings. The energy absorbing member 2 may be fitted to the outer periphery of the end portion of the support member 1.

本発明の一実施形態を示すFRP製エネルギー吸収部材の取付け構造を車体の前部フレーム構造に適用した斜視図。The perspective view which applied the attachment structure of the energy absorption member made from FRP which shows one Embodiment of this invention to the front frame structure of the vehicle body. 同じくFRP製エネルギー吸収部材の取付け構造を含むフロントサイドメンバの側面図。The side view of the front side member similarly including the attachment structure of the energy absorption member made from FRP. 図2に示すフロントサイドメンバのA−A、B−B、C−C部の各断面を(A)、(B)、(C)で示す断面図。Sectional drawing which shows each cross section of the AA of a front side member shown in FIG. 2, BB, and CC part by (A), (B), (C). FRP製エネルギー吸収部材の取付け構造の断面図。Sectional drawing of the attachment structure of the energy absorption member made from FRP. FRP製エネルギー吸収部材の逐次圧壊状態を(A)〜(C)に分けて示す作動図。The operation | movement figure which divides and shows the sequential crushing state of the energy absorption member made from FRP into (A)-(C). FRP製エネルギー吸収部材の取付け構造の第2実施例を示す断面図。Sectional drawing which shows 2nd Example of the attachment structure of the energy absorption member made from FRP.

符号の説明Explanation of symbols

SM フロントサイドメンバ
1 支持部材
2 FRP製エネルギー吸収部材、エネルギー吸収部材
3 成形用コアとしての発泡コア、コア
4 空間
5 筒部材
10、11 圧壊破片
SM Front Side Member 1 Support Member 2 FRP Energy Absorbing Member, Energy Absorbing Member 3 Foam Core as Core for Molding, Core 4 Space 5 Cylindrical Member 10, 11 Crushing Debris

Claims (3)

軸方向からの入力荷重により入力端側から半径方向外側と半径方向内側に開く状態で逐次圧壊を起こすよう補強繊維と樹脂とからなる筒状断面の繊維強化プラスチック製エネルギー吸収部材と、
内部に成形用コアを備えて繊維強化プラスチックにより筒状断面に形成され、前記繊維強化プラスチック製エネルギー吸収部材に筒状断面の端部が接合された支持部材と、からなり、
前記成型用コアの端部に設けた穴により、前記支持部材の端部に前記エネルギー吸収部材の内部空間に連なる空間を形成したことを特徴とする繊維強化プラスチック製エネルギー吸収部材の取付け構造。
An energy absorbing member made of fiber reinforced plastic having a cylindrical cross section made of a reinforcing fiber and a resin so as to cause successive crushing in a state where the input load from the axial direction opens radially outward and radially inward from the input end side,
A support member in which a molding core is provided inside and formed into a cylindrical cross section with fiber reinforced plastic, and an end of the cylindrical cross section is joined to the fiber reinforced plastic energy absorbing member ;
A structure for attaching an energy absorbing member made of fiber reinforced plastic, wherein a space connected to an internal space of the energy absorbing member is formed at an end portion of the support member by a hole provided in an end portion of the molding core .
軸方向からの入力荷重により入力端側から半径方向外側と半径方向内側に開く状態で逐次圧壊を起こすよう補強繊維と樹脂とからなる筒状断面の繊維強化プラスチック製エネルギー吸収部材と、
内面に嵌合させて配置した有底の筒部材を備えて繊維強化プラスチックにより筒状断面に形成され、前記繊維強化プラスチック製エネルギー吸収部材に筒状断面の端部が接合された支持部材と、からなり、
前記有底の筒部材により、前記支持部材の端部に前記エネルギー吸収部材の内部空間に連なる空間を形成したことを特徴とする繊維強化プラスチック製エネルギー吸収部材の取付け構造。
An energy absorbing member made of fiber reinforced plastic having a cylindrical cross section made of a reinforcing fiber and a resin so as to cause successive crushing in a state where the input load from the axial direction opens radially outward and radially inward from the input end side,
A support member having a bottomed cylindrical member fitted to the inner surface and formed in a cylindrical cross section with fiber reinforced plastic, and an end portion of the cylindrical cross section joined to the fiber reinforced plastic energy absorbing member; Consists of
A structure for attaching an energy absorbing member made of fiber reinforced plastic, characterized in that a space continuous with the internal space of the energy absorbing member is formed at the end of the supporting member by the bottomed cylindrical member .
前記空間は、前記エネルギー吸収部材の逐次圧壊する体積の半分以上の容積を備えることを特徴とする請求項1または請求項2に記載の繊維強化プラスチック製エネルギー吸収部材の取付け構造。 The structure for attaching an energy absorbing member made of fiber reinforced plastic according to claim 1 or 2, wherein the space has a volume that is at least half of a volume of the energy absorbing member that is sequentially collapsed .
JP2004092192A 2004-03-26 2004-03-26 Mounting structure of fiber reinforced plastic energy absorbing member Expired - Fee Related JP4440684B2 (en)

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