KR100998381B1 - 흡음체, 흡음 구조체, 흡음체의 제조 방법 및 흡음 구조체의 제조 방법 - Google Patents
흡음체, 흡음 구조체, 흡음체의 제조 방법 및 흡음 구조체의 제조 방법 Download PDFInfo
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Abstract
Description
발명의 요약
단, 구멍의 단면적의 총계는, 레조네이터(55)의 상면 및 하면의 단면적에 대하여 30%
Claims (29)
- 흡음체에 있어서,2개의 미팽창층과, 이들 미팽창층에 끼워지고 또한 다수의 공극을 갖는 팽창층을 구비하는 성형체를 갖고,상기 성형체는 열가소성 수지에 보강용 섬유를 함유시킨 섬유 함유 열가소성 수지로 형성되며,상기 성형체의 임의의 개소에는, 상기 한쪽의 미팽창층을 관통하고 다른쪽의 미팽창층까지는 도달하지 않고 있는 깊이의 구멍이 복수 형성되고,상기 구멍의 단면적은 0.785 내지 314㎟이고, 그 피치가 1㎜ 이상 200mm 이하인 것을 특징으로 하는흡음체.
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- 흡음체의 제조 방법에 있어서,내부의 캐비티(cavity)에 대하여 진퇴가능한 이동 형(die)을 구비한 금형을 사용하고,길이가 2 내지 100㎜의 범위로 된 보강용 섬유를 포함하는 섬유 함유 열가소성 수지를 용융시켜서 상기 금형의 캐비티 내에 사출한 후에, 상기 이동 형을 후퇴시켜서 상기 캐비티를 확장함으로써, 상기 섬유 함유 열가소성 수지 내에 공극을 형성시켜서, 2개의 미팽창층과, 이들 미팽창층에 끼워지고 다수의 공극을 갖는 팽창층을 구비하는 성형체를 성형하고,상기 성형체의 임의의 개소에, 상기 한쪽의 미팽창층을 관통하고 다른쪽의 미팽창층까지는 도달하지 않고 있는 깊이의 구멍을 복수 형성하고, 상기 구멍의 단면적은 0.785 내지 314㎟이고, 그 피치가 1㎜ 이상 200mm 이하인 것을 특징으로 하는흡음체의 제조 방법.
- 흡음체의 제조 방법에 있어서,내부의 캐비티에 대하여 진퇴가능한 캐비티 형성면을 복수 갖는 이동 형을 구비한 금형을 사용하고,길이가 2 내지 100㎜의 범위로 된 보강용 섬유를 포함하는 섬유 함유 열가소성 수지를 용융시켜서 상기 금형의 캐비티 내에 사출한 후에, 상기 이동 형을 후퇴시켜서 상기 캐비티를 확장함으로써, 상기 섬유 함유 열가소성 수지 내에 공극을 형성시켜서, 2개의 미팽창층과, 이들 미팽창층에 끼워지고 다수의 공극을 갖는 팽창층을 구비하는 성형체를 성형하고, 또한 상기 팽창층의 상기 캐비티 형성면에 대응한 부분에, 상기 부분의 주위와는 팽창률이 다른 영역을 형성하며,상기 성형체의 임의의 개소에, 상기 한쪽의 미팽창층을 관통하고 다른쪽의 미팽창층까지는 도달하지 않고 있는 깊이의 구멍을 복수 형성하고, 상기 구멍의 단면적은 0.785 내지 314㎟이고, 그 피치가 1㎜ 이상 200mm 이하인 것을 특징으로 하는흡음체의 제조 방법.
- 제 9 항 또는 제 10 항에 있어서,상기 성형체를 성형한 후, 상기 구멍을 형성하는 것을 특징으로 하는흡음체의 제조 방법.
- 흡음성이 요구되는 용도에 사용되는 흡음 구조체의 제조 방법에 있어서,제 9 항 또는 제 10 항에 기재된 흡음체의 제조 방법에 의해, 통 형상의 성형체를 분할하고 또한 내면에 상기 성형체를 관통하지 않는 구멍을 갖는 복수의 분할체를 성형하고,상기 복수의 분할체의 대향하는 면끼리를 마주 보게 하여, 상기 복수의 분할체를 일체적으로 접합하는 것을 특징으로 하는흡음 구조체의 제조 방법.
- 제 12 항에 있어서,상기 접합의 방법은 다이 슬라이드 사출(Die Slide Injection) 공법, 다이 회전 사출(Die Rotary Injection) 공법, 진동 용착, 열판 용착, 레이저 용착 중 어느 하나의 방법인 것을 특징으로 하는흡음 구조체의 제조 방법.
- 제 1 항에 있어서,상기 팽창층의 팽창 배율은 1.2배 이상 3.0배 이하인 것을 특징으로 하는흡음체.
- 제 1 항에 있어서,상기 구멍이 원형이고, 그 내경이 1mm 이상 20mm 이하인 것을 특징으로 하는흡음체.
- 제 1 항에 있어서,상기 구멍의 피치는 10mm 이상 200mm 이하인 것을 특징으로 하는흡음체.
- 제 1 항에 있어서,상기 구멍이 원형이고, 그 내경이 1.5mm 이상 5mm 이하이며, 그 피치가 15mm 이상 25mm 이하인 것을 특징으로 하는흡음체.
- 제 1 항에 있어서,주파수 630Hz 이상 1000Hz 이하의 범위에서 흡음률이 최대값을 나타내는 것을 특징으로 하는흡음체.
- 제 1 항 또는 제 14 항 내지 제 18 항 중 어느 한 항에 있어서,상기 열가소성 수지가 불포화 카르복실산 또는 그 유도체에 의해서 변성된 산변성 폴리올레핀계 수지를 함유하는 폴리프로필렌 수지인 것을 특징으로 하는흡음체.
- 제 1 항 또는 제 14 항 내지 제 18 항 중 어느 한 항에 있어서,상기 보강용 섬유가 유리 섬유인 것을 특징으로 하는흡음체.
- 제 19 항에 있어서,상기 보강용 섬유가 유리 섬유인 것을 특징으로 하는흡음체.
- 제 1 항 또는 제 14 항 내지 제 18 항 중 어느 한 항에 있어서,상기 구멍의 단면적 및/또는 피치는 2종류 이상인 것을 특징으로 하는흡음체.
- 제 1 항 또는 제 14 항 내지 제 18 항 중 어느 한 항에 있어서,상기 미팽창층 중 적어도 한쪽의 두께는 0.5 내지 2.0㎜인 것을 특징으로 하는흡음체.
- 제 1 항 또는 제 14 항 내지 제 18 항 중 어느 한 항에 있어서,상기 팽창층은 팽창 배율이 다른 복수의 영역을 갖는 것을 특징으로 하는흡음체.
- 제 24 항에 있어서,상기 복수의 영역은 팽창 배율이 1.2 내지 3.0배의 고 팽창 영역을 포함하는 것을 특징으로 하는흡음체.
- 제 25 항에 있어서,상기 구멍은 상기 고 팽창 영역에 형성되어 있는 것을 특징으로 하는흡음체.
- 흡음성이 요구되는 용도에 사용되는 흡음 구조체에 있어서,제 1 항 또는 제 14 항 내지 제 18 항 중 어느 한 항에 기재된 흡음체를 포함하고,상기 흡음 구조체는 실린더 헤드, 타이밍 벨트 커버, 에어 클리너, 에어 덕트, 엔진 커버, 흡배기용 레조네이터(resonator), 인테이크 매니폴드, 엔진 룸과 실내의 차폐판, 트렁크 룸으로서 사용되는 것을 특징으로 하는흡음 구조체.
- 흡음성이 요구되는 용도에 사용되는 흡음 구조체에 있어서,제 21 항에 기재된 흡음체를 포함하고,상기 흡음 구조체는 실린더 헤드, 타이밍 벨트 커버, 에어 클리너, 에어 덕트, 엔진 커버, 흡배기용 레조네이터, 인테이크 매니폴드, 엔진 룸과 실내의 차폐판, 트렁크 룸으로서 사용되는 것을 특징으로 하는흡음 구조체.
- 제 28 항에 있어서,음파의 진행 방향과 상기 미팽창층의 표면이 이루는 각도 중 작은 쪽이 60 내지 90도로 되어 있는 것을 특징으로 하는흡음 구조체.
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PCT/JP2003/005355 WO2003091987A1 (fr) | 2002-04-26 | 2003-04-25 | Dispositif et element structurel d'absorption des bruits et procede de fabrication associe |
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CN1666251A (zh) | 2005-09-07 |
US7364014B2 (en) | 2008-04-29 |
WO2003091987A1 (fr) | 2003-11-06 |
KR20040111549A (ko) | 2004-12-31 |
AU2003235142A1 (en) | 2003-11-10 |
CN100508023C (zh) | 2009-07-01 |
US20050252714A1 (en) | 2005-11-17 |
EP1503367A1 (en) | 2005-02-02 |
JPWO2003091987A1 (ja) | 2005-09-02 |
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