KR101807039B1 - 접합용 스틸이 인서트 성형된 복합소재 - Google Patents

접합용 스틸이 인서트 성형된 복합소재 Download PDF

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Publication number
KR101807039B1
KR101807039B1 KR1020160052105A KR20160052105A KR101807039B1 KR 101807039 B1 KR101807039 B1 KR 101807039B1 KR 1020160052105 A KR1020160052105 A KR 1020160052105A KR 20160052105 A KR20160052105 A KR 20160052105A KR 101807039 B1 KR101807039 B1 KR 101807039B1
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South Korea
Prior art keywords
steel
joining
composite material
insert
flange
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KR1020160052105A
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English (en)
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KR20170123016A (ko
Inventor
송원기
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현대자동차 주식회사
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Priority to KR1020160052105A priority Critical patent/KR101807039B1/ko
Priority to JP2016165967A priority patent/JP2017198332A/ja
Priority to US15/270,130 priority patent/US10406781B2/en
Priority to CN201610938794.5A priority patent/CN107336492B/zh
Publication of KR20170123016A publication Critical patent/KR20170123016A/ko
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Publication of KR101807039B1 publication Critical patent/KR101807039B1/ko

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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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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract

접합용 스틸이 인서트 성형된 복합소재이 개시된다. 본 발명의 실시 예에 따른 접합용 스틸이 인서트 성형된 복합소재는 접합용 스틸이 인서트 성형된 복합소재에 있어서, 상기 접합용 스틸 상에 일방향으로 플랜지를 갖는 복수개의 버링홀이 형성되어 섬유사 사이에 인서트 된 상태로, 상기 섬유사 사이에서 상기 버링홀 내부와 플랜지 외측으로 수지가 충진된다.

Description

접합용 스틸이 인서트 성형된 복합소재{COMPOSITES HAVING INSERT STEEL FOR WELDING}
본 발명은 접합용 스틸이 인서트 성형된 복합소재에 관한 것으로서, 보다 상세하게는 복합소재와 접합용 스틸과의 사이에 전단강도를 보강하는 접합용 스틸이 인서트 성형된 복합소재에 관한 것이다.
일반적으로 차량은 고강도 경량화 추세에 맞추어 개발되고 있는 실정이며, 이에 따라, 스틸 재질이 아닌 가벼우면서도 강성이 우수하며, 디자인 및 설계 자유도가 높은 알루미늄이나 복합재료 등의 소재를 차체에 적용하고 있다.
이와 같이, 차체에 알루미늄이나 복합재료 등의 신소재의 사용에 따라, 이종 재료의 접합이 새로운 이슈로 대두되고 있는 바, 상기 이종 재료의 접합에 대한 연구 개발이 활발히 이루어지고 있다.
이러한 이종 재료의 접합은 용접성 또는 부식성 등이 불리하여 기계적 접합이 주로 이루어지며, 원하는 만큼의 강성이 나오지 않는 경우가 많다.
특히, 상기 복합소재와 스틸소재를 상호 연결하는 구조는 상기 복합소재에 관통홀을 가공한 후, 상기 관통홀을 통해 스틸소재와 볼팅으로 체결되며, 이에 따라, 조립 속도가 떨어져 대량 생산에 부적합하다는 단점이 있다.
상기와 같은 복합소재와 스틸소재의 연결 강성을 보강하기 위하여 연결 부재를 상기 복합소재 사이에 삽입하는 경우가 있는데, 오히려 연결 부재가 복합소재에 접착이 잘되지 않아 크랙이 발생하는 원인이 되는 문제점이 있다.
이 배경기술 부분에 기재된 사항은 발명의 배경에 대한 이해를 증진하기 위하여 작성된 것으로서, 이 기술이 속하는 분야에서 통상의 지식을 가진 자에게 이미 알려진 종래 기술이 아닌 사항을 포함할 수 있다.
본 발명의 실시 예는 일방향으로 플랜지를 갖는 접합용 스틸을 섬유사 사이에 인서트 성형하여 수지를 충진함으로써, 복합소재와 접합용 스틸 사이의 전단강도를 향상시키는 접합용 스틸이 인서트 성형된 복합소재를 제공하고자 한다.
본 발명의 하나 또는 다수의 실시 예에서는 접합용 스틸이 인서트 성형된 복합소재에 있어서, 상기 접합용 스틸 상에 일방향으로 플랜지를 갖는 복수개의 버링홀이 형성되어 섬유사 사이에 인서트 된 상태로, 상기 섬유사 사이에서 상기 버링홀 내부와 플랜지 외측으로 수지가 충진되어 복합소재와 접합용 스틸 사이의 전단강도를 보강하는 전단 보강부를 형성하는 접합용 스틸이 인서트 성형된 복합소재를 제공할 수 있다.
또한, 상기 전단 보강부는 상기 복합소재의 두께에 비하여 상기 플랜지의 높이보다 더 두껍게 형성될 수 있다.
또한, 상기 플랜지는 상기 버링홀의 둘레를 따라 일방향으로 형성되며, 상기 접합용 스틸의 단면에 대하여 직각방향으로 형성될 수 있다.
또한, 상기 접합용 스틸은 상기 복합소재에 인서트 성형되지 않은 외측의 선단을 따라 용접단이 형성될 수 있다.
또한, 상기 버링홀은 원형홀로 형성될 수 있다.
본 발명의 실시 예는 일방향으로 플랜지를 갖는 접합용 스틸을 섬유사 사이에 인서트 성형한 상태로, 상기 섬유사 사이에 수지를 충진시켜 전단 보강부를 형성하여 상기 섬유사의 두께를 두껍게 함으로써, 상기 복합소재와 접합용 스틸 사이의 전단강도를 향상시키는 효과가 있다.
이외에 본 발명의 실시 예로 인해 얻을 수 있거나 예측되는 효과에 대해서는 본 발명의 실시 예에 대한 상세한 설명에서 직접적 또는 암시적으로 개시하도록 한다. 즉, 본 발명의 실시 예에 따라 예측되는 다양한 효과에 대해서는 후술될 상세한 설명 내에서 개시될 것이다.
도 1은 본 발명의 실시 예에 따른 접합용 스틸이 인서트 성형된 복합소재의 적용 단면도이다.
도 2는 본 발명의 실시 예에 따른 접합용 스틸이 인서트 성형된 복합소재의 단면도이다.
이하, 첨부한 도면을 참고로 하여 본 발명의 실시 예를 설명한다. 다만, 하기에 도시되는 도면과 후술되는 상세한 설명은 본 발명의 특징을 효과적으로 설명하기 위한 여러 가지 실시 예들 중에서 바람직한 하나의 실시 예에 관한 것이다.
도 1은 본 발명의 실시 예에 따른 접합용 스틸이 인서트 성형된 복합소재의 적용 단면도이고, 도 2는 본 발명의 실시 예에 따른 접합용 스틸이 인서트 성형된 복합소재의 단면도이다.
도 1 및 도 2를 참조하면, 본 발명의 실시 예에 따른 접합용 스틸이 인서트 성형된 복합소재(이하, 간단히 복합소재라 함)는 인서트 성형된 접합용 스틸(10)을 통해 차체 부품(1)과 견고하게 접합하기 위해 적용된다.
상기 복합소재는 상기 접합용 스틸(10) 상에 일방향으로 플랜지(11)를 갖는 복수개의 버링홀(13)이 형성된다.
이때, 상기 플랜지(11)는 버링홀(13)의 둘레를 따라 일방향으로 형성되며, 접합용 스틸(10)의 단면에 대하여 직각방향으로 형성된다.
본 발명의 실시 예에 따른 플랜지(11)는 접합용 스틸(10)의 단면에 대하여 직각방향으로 형성되는 것을 예로 들어 설명하였지만, 반드시 이에 한정되는 것은 아니며, 필요에 따라 그 방향과 각도는 변경될 수 있다.
또한, 상기 버링홀(13)은 원형홀로 형성될 수 있다.
이러한 접합용 스틸(10)은 섬유사(20) 사이에 인서트 성형된 상태로, 상기 섬유사(20) 내부에 수지(30)가 충진된다.
이때, 본 발명의 실시 예에 따른 섬유사(20)는 편의상 2겹이 겹쳐진 것을 예로 들어 도시하였지만, 반드시 이에 한정되는 것은 아니며, 여러 겹이 겹쳐져 이루어질 수 있다.
또한, 상기 수지(30)는 버링홀(13)의 내부와 플랜지(11) 외측으로 충진된 상태로, 상기 섬유사(20) 사이에 전단 보강부(40)가 형성된다.
상기 전단 보강부(40)는 섬유사(20)와 접합용 스틸(10) 사이의 전단강도를 향상시킨다.
또한, 상기 전단 보강부(40)는 복합소재의 두께에 비하여 상기 플랜지(11)의 높이보다 더 두껍게 형성된다.
즉, 상기 복합소재의 두께(t)는 전단 보강부(40)의 두께에 따라 달라질 수 있으며, 상기 전단 보강부(40)의 두께는 버링홀(13)의 높이에 따라 달라질 수 있다.
상기와 같이 구성되는 복합소재는 섬유 강화 플라스틱(FRP: Fiber Reinforced Plastic)으로 이루어질 수 있다.
상기 섬유 강화 플라스틱은 유리섬유를 강화재로 하여, 수지를 함침시킨 후, 강화시킨 복합재료를 말한다.
또한, 상기 섬유 강화 플라스틱은 성형성이 좋고 경량이며, 탄소섬유, 아라미드 섬유, 보건 섬유 등의 신소재를 강화재로 하여 보다 고강도, 고탄성의 경량소재로 적용될 수 있다.
한편, 상기 접합용 스틸(10)은 섬유사(20) 사이에 인서트 성형되지 않은 외측의 선단을 따라 용접단(15)이 형성된다.
상기 용접단(15)은 차체 부품(1)과 복합소재를 연결하기 위한 것으로, 일측 선단부가 절곡 성형되어 형성된다.
즉, 상기 접합용 스틸(10)은 외측 선단의 용접단(15)을 따라 차체 부품(1)과 용접(W) 접합되어 접합강도를 향상시킨다.
따라서 본 발명의 실시 예에 따른 접합용 스틸이(10) 인서트 성형된 복합소재는 일방향으로 플랜지(11)를 갖는 복수개의 버링홀(13)이 형성된 접합용 스틸(10)을 섬유사(20) 사이에 인서트 성형한 상태로, 수지(30)를 충진하여 상기 접합용 스틸(10)과 복합소재 사이의 전단강도를 향상시킬 수 있다.
또한, 상기 접합용 스틸(10)이 인서트 성형된 복합소재는 상기 버링홀(13)에 의해 형성되는 전단 보강부(40)에 의해서 상기 접합용 스틸(10)의 두께를 늘리지 않아도 접합강도를 향상시킬 수 있다.
또한, 상기 접합용 스틸(10)은 외측 선단의 용접단(15)을 통해 차체 부품(1)과 용접(W)됨에 따라 접합강도를 향상시킬 수도 있다.
상기에서는 본 발명의 바람직한 실시 예를 참조하여 설명하였지만, 해당 기술 분야에서 통상의 지식을 가진 자라면 하기의 특허 청구의 범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.
1 ... 차체 부품
10 ... 접합용 스틸
11 ... 플랜지
13 ... 버링홀
15 ... 용접단
20 ... 섬유사
30 ... 수지
40 ... 전단 보강부

Claims (5)

  1. 접합용 스틸이 인서트 성형된 복합소재에 있어서,
    상기 접합용 스틸 상에 일방향으로 플랜지를 갖는 복수개의 버링홀이 형성되어 섬유사 사이에 인서트 된 상태로, 상기 섬유사 사이에서 상기 버링홀 내부와 플랜지 외측으로 수지가 충진되어 복합소재와 접합용 스틸 사이의 전단강도를 보강하는 전단 보강부를 형성하되,
    상기 전단 보강부는
    상기 복합소재의 두께에 비하여 상기 플랜지의 높이보다 더 두껍게 형성되는 접합용 스틸이 인서트 성형된 복합소재.
  2. 삭제
  3. 제1항에 있어서,
    상기 플랜지는
    상기 버링홀의 둘레를 따라 일방향으로 형성되며, 상기 접합용 스틸의 단면에 대하여 직각방향으로 형성되는 접합용 스틸이 인서트 성형된 복합소재.
  4. 제1항에 있어서,
    상기 접합용 스틸은
    상기 복합소재에 인서트 성형되지 않은 외측의 선단을 따라 용접단이 형성되는 접합용 스틸이 인서트 성형된 복합소재.
  5. 제1항에 있어서,
    상기 버링홀은 원형홀로 형성되는 접합용 스틸이 인서트 성형된 복합소재.
KR1020160052105A 2016-04-28 2016-04-28 접합용 스틸이 인서트 성형된 복합소재 KR101807039B1 (ko)

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JP2016165967A JP2017198332A (ja) 2016-04-28 2016-08-26 接合用スチールがインサート成形された複合素材
US15/270,130 US10406781B2 (en) 2016-04-28 2016-09-20 Composite material with insert-molded attachment steel
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KR20170123016A (ko) 2017-11-07
JP2017198332A (ja) 2017-11-02

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