KR100235678B1 - A material for absorbing noise in a car - Google Patents

A material for absorbing noise in a car Download PDF

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Publication number
KR100235678B1
KR100235678B1 KR1019960053868A KR19960053868A KR100235678B1 KR 100235678 B1 KR100235678 B1 KR 100235678B1 KR 1019960053868 A KR1019960053868 A KR 1019960053868A KR 19960053868 A KR19960053868 A KR 19960053868A KR 100235678 B1 KR100235678 B1 KR 100235678B1
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South Korea
Prior art keywords
sound absorbing
insulating material
vehicle
sheet
layer
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KR1019960053868A
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Korean (ko)
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KR970065332A (en
Inventor
권회현
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권회현
대한화학공업주식회사
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Priority to KR1019960053868A priority Critical patent/KR100235678B1/en
Publication of KR970065332A publication Critical patent/KR970065332A/en
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Publication of KR100235678B1 publication Critical patent/KR100235678B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/20—Making multilayered or multicoloured articles
    • B29C43/203—Making multilayered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0838—Insulating elements, e.g. for sound insulation for engine compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/105—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles for motor cars
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B29C2043/022—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having locally depressed lines, e.g. hinges
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B29C2043/023—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
    • B29C2043/3613—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons applying pressure locally
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3041—Trim panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Multimedia (AREA)
  • Textile Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Laminated Bodies (AREA)

Abstract

본 발명은 자동차의 외부 및 내부소음을 저감할 수 있는 새로운 구조의 흡차음재시트에 관한 것이다.The present invention relates to a sound absorbing and insulating material sheet of a novel structure that can reduce external and internal noise of a vehicle.

본 발명에 따르면, 자동차의 흡차음재 시트에 있어서, 내부에는 레진펠트층(11)과 발포수지층(12)이 적층 구비되고, 외부에는 부직포층(10)으로 피복된 적층시트로 구성되며, 시트의 가장자리를 포함한 부위를 상대적으로 강하게 압착하여 이루어지는 고밀도부(5)와, 상기 고밀도부(5) 이외의 부위에 형성되며 상대적으로 약하게 압착하여 이루어지는 저밀도부(6)로 구획된 것을 특징으로 하는 자동차의 흡차음재가 제공된다.According to the present invention, in the sound absorbing and insulating material sheet of an automobile, a resin felt layer 11 and a foamed resin layer 12 are laminated therein, and an outer layer is formed of a laminated sheet coated with a nonwoven fabric layer 10. An automobile characterized in that it is divided into a high density part 5 formed by relatively strongly compressing a portion including an edge of a low density part 6 formed in a portion other than the high density part 5 and relatively weakly compressed. Sound absorbing and insulating material is provided.

Description

자동차의 흡차음재시트Sound absorbing and insulating material sheet of car

본 발명은 자동차의 흡차음재시트에 관한 것으로서, 좀 더 상세히는 자동차의 외부 및 내부소음을 저감할 수 있는 새로운 구조의 흡차음재시트에 관한 것이다.The present invention relates to a sound absorbing and insulating material sheet of a vehicle, and more particularly to a sound absorbing and insulating material sheet of a new structure that can reduce the external and internal noise of the vehicle.

자동차 차체의 각 부위에는 흡차음재가 부착된다. 이러한 흡차음재는 N.V.H로 불리우는 각종 소음이나 진동을 차단, 흡수함으로써 차실내의 정숙을 유지하여 쾌적한 주행환경을 달성하기 위한 것이다. 그런데, 종래의 이러한 흡차음재는 주로 엔진이나 동력전달계통에서 발생한 소음이나 진동이 차체패널을 통해 차실내로 전달 또는 침투하는 것을 방지하는데 주안점을 두어, 플로워패널이나 도어패널, 엔진룸과 차실 사이 또는 차실과 트렁크룸 사이 등, 차체의 각 부위와 차실 사이에 주로 배치되었다. 그러나, 이와 같이, 차실소음방지 위주의 흡차음설계만으로는 높아지는 소음규제기준이나 소비자들의 정숙한 차량에 대한 요구수준을 만족시킬 수 없다. 특히 엔진룸에서 차체 외부로 전달되는 소음은 직접적으로는 자동차가 주행하는 도로변의 소음치를 높이고 간접적으로는 이러한 소음이 다시 차실내로 전달되어 차실의 소음치를 높이게 됨에도 불구하고 이러한 엔진룸에서 차체외부로 전달되는 소음을 방지하기 위한 별다른 대책이 강구되고 있지 은 실정이다.Sound absorbing and insulating material is attached to each part of the vehicle body. The sound absorbing and insulating material is to achieve a pleasant driving environment by maintaining quietness in the vehicle interior by blocking and absorbing various noises and vibrations called N.V.H. However, the conventional sound absorbing and insulating material mainly focuses on preventing noise or vibration generated from the engine or the power transmission system from being transmitted or penetrated through the body panel, between the floor panel, the door panel, the engine room and the cabin. It is mainly placed between each part of the body and the cabin, such as between the cabin and the trunk room. However, as such, the sound absorbing and soundproofing design focusing on vehicle interior noise prevention cannot satisfy the high noise regulation standard or the demand level of the quiet vehicle of consumers. In particular, the noise transmitted from the engine room to the outside of the vehicle body directly increases the noise level on the roadside where the vehicle runs, and indirectly, the noise is transmitted back to the interior of the vehicle to increase the noise level of the vehicle body. No measures have been taken to prevent the transmission of noise.

한편, 종래에 사용되는 흡차음재는 대체로 단일층의 재료 또는 적층재료를 균일하게 압착시켜서 소정의 형태로 성형한 시트를 사용하였는데, 이와 같이, 균일하게 압착시킨 흡차음재는 흡음성과 아울러 형태유지성 또는 작업성을 동시에 만족시킬 수 없다는 문제점이 있었다.On the other hand, conventionally used sound absorbing and insulating material is a sheet formed by molding a predetermined shape by uniformly compressing a single layer of material or laminated material, as described above, the sound-absorbing sound insulating material uniformly crimped is sound-absorbing as well as form-maintainability or work There was a problem that can not be satisfied at the same time.

본 발명은 전술한 바와 같은 종래의 자동차의 소음방지대책의 문제점과 흡차음재의 문제점을 착안하여 제안된 것으로서, 자동차의 엔진룸에서 발생되는 엔진소음이 차체 외부로 전달되는 것을 효과적으로 차단 흡수할 수 있는 새로운 구조의 자동차의 흡차음재시트를 제공하고자 하는 것이다.The present invention has been proposed in view of the problems of the noise prevention measures of the conventional vehicle and the problem of the sound absorbing and insulating material as described above, which can effectively block and absorb the transmission of engine noise generated in the engine room of the vehicle to the outside of the vehicle body. It is to provide a sound absorbing and insulating material sheet of a new vehicle structure.

또한, 본 발명은 엔진룸 이외의 부위에도 적용가능하며 흡음성능과 함께 형태유지성이나 설치시의 작업성을 높일 수 있는 새로운 구조의 자동차의 흡차음재시트를 제공하고자 하는 것이다.In addition, the present invention is applicable to a portion other than the engine room, and to provide a sound absorbing and insulating material sheet of a vehicle of a new structure that can improve the formability and workability at the time of installation with sound absorption performance.

제1도는 본 발명의 일 실시예의 설치상태 예시도.1 is an illustration of an installation state of an embodiment of the present invention.

제2도는 상기 실시예의 사시도.2 is a perspective view of the above embodiment.

제3도는 상기 실시예의 A-A선 단면도.3 is a cross-sectional view taken along the line A-A of the embodiment.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 차체 2 : 엔진룸1: body 2: engine room

3 : 엔진후드 4 : 흡차음재시트3: engine hood 4: sound absorbing and insulating material sheet

5 : 입착부(고밀도부) 6 : 부분압착부(저밀도부)5: adhesion part (high density part) 6: partial compression part (low density part)

7 : 체결비스 8 : 체결공7: fastening screw 8: fastening hole

10 : 부직포층 11 : 레진펠트층10 nonwoven fabric layer 11 resin felt layer

12 : 발포시트층12: foam sheet layer

본 발명에 따르면, 자동차의 흡차음재 시트에 있어서, 내부에는 레진펠트층(11)과 발포지수층(12)이 적층 구비되고, 외부에는 부직포층(10)으로 피복된 적층시트로 구성되며, 시트의 가장자리를 포함한 부위를 상대적으로 강하게 압착하여 이루어지는 고밀도부(5)와, 상기 고밀도부(5) 이외의 부위에 형성되며 상대적으로 약하게 압착하여 이루어지는 저밀도부(6)로 구획된 것을 특징으로 하는 자동차의 흡차음재가 제공된다.According to the present invention, in the sound absorbing and insulating material sheet of a vehicle, the resin felt layer 11 and the foam index layer 12 is provided with a lamination, the outer is composed of a laminated sheet coated with a nonwoven fabric layer 10, the sheet An automobile characterized in that it is divided into a high density part 5 formed by relatively strongly compressing a portion including an edge of a low density part 6 formed in a portion other than the high density part 5 and relatively weakly compressed. Sound absorbing and insulating material is provided.

이하에서 도면을 참조하여 본 발명의 바람직한 실시예를 설명한다. 제1도는 본 발명의 흡차음재를 엔진후드에 부착한 상태를 보여주며, 제2도와 제3도는 상기 흡차음재의 사시도와 단면도이다.Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. 1 shows a state in which the sound absorbing and insulating material of the present invention is attached to an engine hood, and FIG. 2 and FIG. 3 are a perspective view and a sectional view of the sound absorbing and insulating material.

도시된 바와 같이, 본 발명에 따르면, 자동차 차체(10)의 엔진룸(2)을 덮도록 된 엔진후드(3)의 내면에는 본 발명에 따른 흡차음재시트(4)가 부착, 피복된다. 이 흡차음재시트(4)는 체결비스(7)로 엔진후드(3)의 내면에 부착되지만, 비스 대신 접착제로 부착될 수도 있을 것이다.As shown, according to the present invention, the sound absorbing and insulating material sheet 4 according to the present invention is attached and coated on the inner surface of the engine hood 3 to cover the engine room 2 of the vehicle body 10. The sound absorbing and insulating material sheet 4 is attached to the inner surface of the engine hood 3 with the fastening bees 7, but may be attached with an adhesive instead of the bees.

이러한 흡차음재시트(4)는 자동차의 엔진소음특성을 고려하여 흡음성이 우수한 펠트나 부직포 및 발포수지와 같은 연질 다공성재료를 적층한 시트로 제작한다.The sound absorbing and insulating material sheet 4 is manufactured by laminating soft porous materials such as felt, nonwoven fabric, and foamed resin having excellent sound absorbing properties in consideration of the engine noise characteristics of automobiles.

제3도에 도시된 실시예에서는, 중앙에는 스폰지나 폴리우레탄폼과 같은 발포수지층(12)이 배치되고, 그 외측면에는 수지가 함침된 잡직물로 된 레진펠트층(11)이 배치되며, 외부면에는 부직포층(10)으로 피복처리한다. 흡차음재시트(4)의 표면을 이루는 부직포층(10)는 엔진에서 발생되는 오일이나 수분을 차단하는 기능을 하며, 필요에 따라 발수처리 등이 가해질 수 있다. 특히, 펠트에 수지를 함침시킨 레진펠트는 고주파영역에서의 흡음률이 높기 때문에, 중주파영역에서 흡음률이 우수한 폴리우레탄 폼과 적층하여 사용하면, 자동차소음 중, 중고주파의 전체영역에 대한 소음을 감소시킬 수 있다.In the embodiment shown in FIG. 3, a foamed resin layer 12, such as a sponge or polyurethane foam, is disposed at the center, and a resin felt layer 11 made of a woven fabric impregnated with resin is disposed at an outer side thereof. The outer surface is coated with a nonwoven fabric layer 10. The nonwoven fabric layer 10 forming the surface of the sound absorbing and insulating material sheet 4 functions to block oil or moisture generated from an engine, and a water repellent treatment may be applied as necessary. In particular, resin felt impregnated with resin has a high sound absorption in the high frequency region, and when used in combination with a polyurethane foam having excellent sound absorption in the medium frequency region, it is possible to reduce noise in the entire area of the high and medium frequencies during automobile noise. Can be.

이러한 흡차음재시트는 적용되는 차종의 형태나 설치부위의 차체의 윤곽형태 또는 부품의 배치상태 등을 고려하여 이에 부합되는 윤곽형상과 요철부를 갖도록 성형제작된다. 그러나, 연질 다공성재료로 적층된 적층시트는 상대적으로 형태유지성이나 작업성이 떨어지므로, 제2도 및 제3도에 도시된 바와 같이, 흡차음재시트(4)의 가장자리나 중간부위 또는 차체와의 체결부위 등에는 이러한 적층시트를 프레스로 강하게 압착시켜서 두께가 얇고 딱딱한 고밀도부(5)로 형성하고, 나머지부분은 상대적으로 약하게 압착시켜서 두께가 두껍고 연질의 쿠션성을 지닌 저밀도부(6)로 성형함으로써 흡차음재로서의 흡음성능과 아울러 형태유지성과 작업성을 동시에 양호하게 유지할 수 있다. 체결비스(7)는 고밀도부(5)에서 차체와 결합함으로써 흡차음재시트가 차체에 견고하게 부착되도록 한다.The sound absorbing and insulating material sheet is molded and manufactured to have a contour shape and an uneven portion corresponding thereto in consideration of the shape of the vehicle model to be applied, the contour shape of the vehicle body at the installation site, or the arrangement state of parts. However, since the laminated sheet laminated with the soft porous material is relatively inferior in formability and workability, as shown in FIGS. 2 and 3, the sound absorbing and insulating material sheet 4 has an edge, an intermediate portion, or a vehicle body. In the fastening part, such a laminated sheet is pressed firmly into a press to form a thin and hard high density part 5, and the remaining part is relatively weakly pressed to be molded into a low density part 6 having a thick thickness and soft cushioning properties. In addition to the sound absorbing performance as the sound absorbing and insulating material, it is possible to maintain good shape retention and workability simultaneously. The fastening bis 7 is coupled to the vehicle body in the high-density portion 5 to securely attach the sound absorbing and insulating material sheet to the vehicle body.

이상에서 설명한 본 발명에 따르면, 또한, 엔진룸이나 기타 차체의 소정부위에 부착되는 흡차음재를 고주파영역에서의 흡음특성이 우수한 레진펠트와 폴리우레탄폼과 같은 발포수지층의 적층시트로 구성하고, 넓은 주파수대역에서의 흡차음특성이 우수한 새로운 구조의 자동차의 흡차음재가 제공될 것이다.According to the present invention described above, the sound absorbing and insulating material attached to a predetermined portion of the engine room or other vehicle body is composed of a laminated sheet of resin felt and polyurethane foam having excellent sound absorption characteristics in the high frequency region, A new sound absorbing and insulating material for a vehicle having excellent sound absorbing and insulating characteristics in a wide frequency band will be provided.

Claims (1)

자동차의 흡차음재 시트에 있어서, 내부에는 레진펠트층(11)과 발포수지층(12)이 적층 구비되고, 외부에는 부직포층(10)으로 피복된 적층시트로 구성되며, 시트의 가장자리를 포함한 부위를 상대적으로 강하게 압착하여 이루어지는 고밀도부(5)와, 상기 고밀도부(5) 이외의 부위에 형성되며 상대적으로 약하게 압착하여 이루어지는 저밀도부(6)로 구획된 것을 특징으로 하는 자동차의 흡차음재.In the sound absorbing and insulating material sheet of a vehicle, a resin felt layer 11 and a foamed resin layer 12 are laminated on the inside, and the outer sheet is composed of a laminated sheet coated with a nonwoven fabric layer 10, and includes an edge of the sheet. A sound absorbing and insulating material for a vehicle, characterized by being divided into a high density portion (5) formed by relatively strong compression and a low density portion (6) formed on a portion other than the high density portion (5).
KR1019960053868A 1996-06-21 1996-11-14 A material for absorbing noise in a car KR100235678B1 (en)

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