JP2017198332A - 接合用スチールがインサート成形された複合素材 - Google Patents

接合用スチールがインサート成形された複合素材 Download PDF

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Publication number
JP2017198332A
JP2017198332A JP2016165967A JP2016165967A JP2017198332A JP 2017198332 A JP2017198332 A JP 2017198332A JP 2016165967 A JP2016165967 A JP 2016165967A JP 2016165967 A JP2016165967 A JP 2016165967A JP 2017198332 A JP2017198332 A JP 2017198332A
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Japan
Prior art keywords
composite material
joining steel
insert
steel
joining
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Pending
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JP2016165967A
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English (en)
Inventor
ソン、ウォン−ギ
Won Ki Song
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Hyundai Motor Co
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Hyundai Motor Co
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Application filed by Hyundai Motor Co filed Critical Hyundai Motor Co
Publication of JP2017198332A publication Critical patent/JP2017198332A/ja
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
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    • B29C65/002—Joining methods not otherwise provided for
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Abstract

【課題】接合用スチールがインサート成形された複合素材を開示する。【解決手段】発明の実施形態による接合用スチールがインサート成形された複合素材は、接合用スチールがインサート成形された複合素材において、前記接合用スチール上に一方向にフランジを有する複数のバーリング穴が形成されて繊維糸の間にインサートされた状態で、前記繊維糸の間で前記バーリング穴の内部とフランジの外側に樹脂が充填される。【選択図】図１

Description

本発明は接合用スチールがインサート成形された複合素材に関し、より詳しくは複合素材と接合用スチールとの間にせん断強度を補強する接合用スチールがインサート成形された複合素材に関する。
一般に車両は高強度化且つ軽量化の傾向に合わせて開発されているのが実情であり、これによって、スチール材質ではない軽量ながらも剛性に優れ、デザインおよび設計自由度の高いアルミニウムや複合材料などの素材を車体に適用している。
このように、車体にアルミニウムや複合材料などの新素材を使用することにより、異種材料の接合が新たな問題として台頭しており、前記異種材料の接合に関する研究開発が盛んに行われている。
このような異種材料の接合は溶接性または腐食性などに不利であるため、機械的接合が主に行われ、所望する程度の剛性が出ない場合が多い。
特に、前記複合素材とスチール素材を相互連結する構造では、前記複合素材に貫通ホールを加工した後、前記貫通ホールを介してスチール素材と前記複合素材とがボルトで締結され、これによって、組み立ての速度が落ち、大量生産に適合ではないという短所がある。
上記のような複合素材とスチール素材の連結剛性を補強するために連結部材を前記複合素材の間に挿入する場合があるが、むしろ連結部材が複合素材にうまく接着されず、クラックが発生する原因になるという問題がある。
この背景技術に記載された内容は発明の背景についての理解を深めるために作成されたものであって、この技術が属する分野における通常の知識を有する者にすでに知られている従来技術でない事項を含み得る。
本発明が解決しようとする課題は、一方向にフランジを有する接合用スチールを繊維糸の間にインサート成形して樹脂を充填することによって、複合素材と接合用スチールとの間のせん断強度を向上させる、接合用スチールがインサート成形された複合素材を提供することにある。
発明を解決するための手段
本発明を達成するため、本発明の一つまたは多数の実施形態では、接合用スチールがインサート成形された複合素材において、前記接合用スチール上に一方向にフランジを有する複数のバーリング穴が形成されて繊維糸の間にインサートされた状態で、前記繊維糸の間で前記バーリング穴の内部とフランジの外側に樹脂が充填され、複合素材と接合用スチールとの間のせん断強度を補強するせん断補強部を形成する接合用スチールがインサート成形された複合素材を提供し得る。
また、前記せん断補強部は、前記複合素材の厚さに比べて前記フランジの高さよりさらに厚く形成され得る。
また、前記フランジは、前記バーリング穴の周囲に沿って一方向に形成され、前記接合用スチールの断面に対して直角方向に形成され得る。
また、前記接合用スチールは、前記複合素材にインサート成形されていない外側の先端に沿って溶接端が形成され得る。
また、前記バーリング穴は、円形穴に形成され得る。
本発明の実施形態によれば、一方向にフランジを有する接合用スチールを繊維糸の間にインサート成形した状態で、前記繊維糸の間に樹脂を充填させてせん断補強部を形成して前記繊維糸の厚さを厚くすることによって、前記複合素材と接合用スチールとの間のせん断強度が向上される。
この他に本発明の実施形態により得られる効果や予測される効果については本発明の実施形態に対する詳細な説明において直接的または暗示的に開示する。すなわち、本発明の実施形態により予測される多様な効果については後述される詳細な説明内に開示される。
本発明の実施形態による接合用スチールがインサート成形された複合素材の適用断面図である。 本発明の実施形態による接合用スチールがインサート成形された複合素材の断面図である。
以下、添付した図面を参照して本発明の実施形態について説明する。ただし、以下に示す図面と後述する詳細な説明は、本発明の特徴を効果的に説明するための多様な実施形態のうち好ましい一つの実施形態に関するものである。
図１は本発明の実施形態による接合用スチールがインサート成形された複合素材の適用断面図であり、図２は本発明の実施形態による接合用スチールがインサート成形された複合素材の断面図である。
図１および図２を参照すると、本発明の実施形態による接合用スチールがインサート成形された複合素材（以下、単に複合素材という）は、インサート成形された接合用スチール１０を介して車体部品１と堅固に接合するために適用される。
前記複合素材は前記接合用スチール１０上に一方向にフランジ１１を有する複数のバーリング穴１３が形成される。
この際、前記フランジ１１はバーリング穴１３の周囲に沿って一方向に形成され、接合用スチール１０の断面に対して直角方向に形成される。
本発明の実施形態によるフランジ１１は、接合用スチール１０の断面に対して直角方向に形成される場合を例に挙げて説明したが、必ずしもこれに限定されず、必要に応じてその方向と角度は変更することができる。
また、前記バーリング穴１３は円形穴に形成され得る。
このような接合用スチール１０は、繊維糸２０の間にインサート成形された状態で、前記繊維糸２０の内部に樹脂３０が充填される。
この際、本発明の実施形態による繊維糸２０は、便宜上二重に重なる場合を例に挙げて示しているが、必ずしもこれに限定されず、多重に重ねてなることもできる。
また、前記樹脂３０はバーリング穴１３の内部とフランジ１１の外側に充填された状態で、前記繊維糸２０の間にせん断補強部４０が形成される。
前記せん断補強部４０は、繊維糸２０と接合用スチール１０との間のせん断強度を向上させる。
また、前記せん断補強部４０の少なくとも一部は複合素材の厚さに比べて前記フランジ１１の高さよりさらに厚く形成される。
すなわち、前記複合素材の厚さ（ｔ）は、せん断補強部４０の厚さに応じて変わり得、前記せん断補強部４０の厚さはバーリング穴１３の高さに応じて変わり得る。
前記のように構成される複合素材は、繊維強化プラスチック（ＦＲＰ：ＦｉｂｅｒＲｅｉｎｆｏｒｃｅｄＰｌａｓｔｉｃ）からなる。
前記繊維強化プラスチックはガラス繊維を強化材とし、樹脂を含浸させた後、強化させた複合材料をいう。
また、前記繊維強化プラスチックは成形性が良くかつ軽量であり、炭素繊維、アラミド繊維、補強繊維などの新素材を強化材とし、より高強度、高弾性の軽量素材として適用される。
一方、前記接合用スチール１０は繊維糸２０の間にインサート成形されない外側の先端に沿って溶接端１５が形成される。
前記溶接端１５は車体部品１と複合素材を連結するためのものであり、一側先端部が折曲成形されて形成され得る。
図１には車体部品１に複合素材を連結するため、二つの接合用スチール１０がインサート成形され、二つの溶接端１５が形成された場合を例示した。すなわち、一つの溶接端１５は、接合用スチール１０が車体部品１に向かって延長された部分に形成され、他の一つの溶接端１５は、接合用スチール１０が延長された後、折り曲げられた部分に形成されている。このような接合用スチール１０の個数と溶接端１５の個数は、複合素材を連結しようとする車体部品１の形状によって当業者が決めることができる。
すなわち、前記接合用スチール１０は、外側先端の溶接端１５に沿って車体部品１と溶接（Ｗ）接合されて接合強度を向上させる。
したがって、本発明の実施形態による接合用スチール１０がインサート成形された複合素材は、一方向にフランジ１１を有する複数のバーリング穴１３が形成された接合用スチール１０を繊維糸２０の間にインサート成形した状態で、樹脂３０を充填して前記接合用スチール１０と複合素材の間のせん断強度を向上させることができる。
また、前記接合用スチール１０がインサート成形された複合素材は、前記バーリング穴１３によって形成されるせん断補強部４０により前記接合用スチール１０の厚さを増やさなくても接合強度を向上させることができる。
また、前記接合用スチール１０は外側先端の溶接端１５を介して車体部品１と溶接（Ｗ）されることによって接合強度を向上させることもできる。
上記では本発明の好ましい実施形態を参照して説明したが、当該技術分野における通常の知識を有する者であれば、以下の特許請求の範囲に記載された本発明の思想および領域から外れない範囲で本発明を多様に修正および変更できることを理解できるであろう。
１ 車体部品
１０ 接合用スチール
１１ フランジ
１３ バーリング穴
１５ 溶接端
２０ 繊維糸
３０ 樹脂
４０ せん断補強部

Claims (5)

  1. 接合用スチールがインサート成形された複合素材において、
    前記接合用スチール上に一方向にフランジを有する複数のバーリング穴が形成されて繊維糸の間にインサートされた状態で、前記繊維糸の間で前記バーリング穴の内部とフランジの外側に樹脂が充填され、複合素材と接合用スチールとの間のせん断強度を補強するせん断補強部を形成する接合用スチールがインサート成形された複合素材。
  2. 前記せん断補強部の少なくとも一部は、
    前記複合素材の厚さに比べて前記フランジの高さよりさらに厚く形成される請求項１に記載の接合用スチールがインサート成形された複合素材。
  3. 前記フランジは、
    前記バーリング穴の周囲に沿って一方向に形成され、前記接合用スチールの断面に対して直角方向に形成される請求項１に記載の接合用スチールがインサート成形された複合素材。
  4. 前記接合用スチールは、
    前記複合素材にインサート成形されていない外側の先端に沿って溶接端が形成される請求項１に記載の接合用スチールがインサート成形された複合素材。
  5. 前記バーリング穴は円形穴に形成される請求項１に記載の接合用スチールがインサート成形された複合素材。
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