JPH04173446A - Sound-proofing material for automobile - Google Patents
Sound-proofing material for automobileInfo
- Publication number
- JPH04173446A JPH04173446A JP2299764A JP29976490A JPH04173446A JP H04173446 A JPH04173446 A JP H04173446A JP 2299764 A JP2299764 A JP 2299764A JP 29976490 A JP29976490 A JP 29976490A JP H04173446 A JPH04173446 A JP H04173446A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- memory resin
- shape
- resin molded
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 55
- 239000011347 resin Substances 0.000 claims abstract description 34
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 239000011358 absorbing material Substances 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 239000012774 insulation material Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009477 glass transition Effects 0.000 abstract description 3
- 239000004800 polyvinyl chloride Substances 0.000 abstract description 3
- 229920000915 polyvinyl chloride Polymers 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 229920001195 polyisoprene Polymers 0.000 abstract description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 description 7
- 230000035515 penetration Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000006261 foam material Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920000636 poly(norbornene) polymer Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 needle felt Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、エンジンルームからの騒音を防止する自動車
用防音材に関し、特には、ワイヤー、ケーブル、ステア
リングシャフト、ペダルシャフト等の防音材を貫通する
部品のために必要不可欠として設ける防音材の孔部から
エンジンルーム内の騒音が車室内に侵入する事を防止す
る自動車用防音材に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a soundproofing material for automobiles that prevents noise from an engine room, and particularly relates to soundproofing materials that penetrate soundproofing materials such as wires, cables, steering shafts, pedal shafts, etc. This invention relates to a soundproofing material for automobiles that prevents noise from the engine compartment from entering the passenger compartment through the holes in the soundproofing material which are provided as essential parts for the parts used in the vehicle.
（従来の技術）
従来よりエンジンルームで発生する騒音を防止するため
にダッシュ部に遮音材と吸音材からなる防音材が装着さ
れていた。(Prior Art) Conventionally, soundproofing materials made of soundproofing material and sound-absorbing material have been attached to the dash to prevent noise generated in the engine compartment.
しかし、吸音性能、遮音性能の両方の性能を兼ね備える
該防音材も、ステアリングシャフト、ペダルシャフト等
の防音材を貫通する棒状部品や、ワイヤー、ケーブル及
び配線等のために車両構造上やむを得ず設ける防音材孔
部から、車両走行時にエンジンルームで発生した騒音が
透過して車室内へ侵入し、防音性能を十分に発揮するこ
とができないという欠点が存した。However, this soundproofing material, which has both sound absorption and soundproofing performance, is also a soundproofing material that is unavoidably installed due to the structure of the vehicle, such as rod-shaped parts that penetrate the soundproofing material such as steering shafts and pedal shafts, and wires, cables, wiring, etc. The problem is that noise generated in the engine room when the vehicle is running passes through the holes and enters the passenger compartment, making it impossible to achieve sufficient soundproofing performance.
エンジンルームからの騒音侵入を防止するために、ワイ
ヤー等の径より小さい遮音柱孔部にスリットを入れ、配
線後、ワイヤー等に遮音材をフィツトさせようとした技
術（実開昭５９−９８４９９号他）や、遮音柱孔部をテ
ーパ形状とした技術（実開昭５６−７０４８２号他）等
が提案されている。しかしながらこれらの防音材では、
スリットからの騒音の侵入や、ワイヤー、ケーブル類と
、孔部がフィツトしきれず、エンジンルームで発生する
騒音の車室内への侵入を満足に防止する効果は得られな
かった。In order to prevent noise intrusion from the engine room, a technique was created in which a slit was made in the hole of the sound insulation column smaller than the diameter of the wire, etc., and the sound insulation material was fitted to the wire after wiring (Utility Model Application No. 59-98499). etc.), and a technique in which the sound-insulating column hole is tapered (Utility Model Application Publication No. 70482/1982, etc.) has been proposed. However, these soundproofing materials
It was not possible to satisfactorily prevent the noise generated in the engine compartment from entering the passenger compartment due to the intrusion of noise through the slit and the wires and cables being unable to fit into the hole.
（発明が解決しようとする課題）
即ち、従来の提案では、配線後、孔部の形状を変化させ
ることにより、ワイヤー、ケーブル等の配線にフィツト
させようとする試みは全くなされておらず、エンジンル
ーム内で発生する騒音の車室内への侵入を満足に防止す
る防音材の出現が要望されている。(Problem to be Solved by the Invention) In other words, in the conventional proposals, no attempt has been made to fit the wiring of wires, cables, etc. by changing the shape of the hole after wiring. There is a need for a soundproofing material that satisfactorily prevents noise generated inside the vehicle from entering the vehicle interior.
（課題を解決するための手段）
かかる現状に鑑み鋭意研究の結果、本発明者らは、形状
記憶樹脂成形物を防音材の孔部相当部位に設け、温度変
化により形状記憶樹脂成形物が所望の形状に変化するよ
う設計することにより、従来種々試みられたが解決し得
なかった孔部から侵入するエンジンルーム内騒音を満足
に防止する防音材を自動車ダッシュ部に装着することに
より初めて、車室内への騒音侵入の防止を顕現し得るこ
とを見いだし本発明に至ったものであり、而して、本発
明の要旨は、
１、遮音材（１）と吸音材（２）からなる防音材におい
て、形状記憶樹脂成形物（３）を防音材の孔部相当部位
に設け、温度変化により形状記憶樹脂成形物が所望の形
状に変化するよう設計してなることを特徴とする自動車
用防音材。(Means for Solving the Problems) In view of the current situation, as a result of intensive research, the present inventors provided a shape memory resin molded product in a portion corresponding to the hole of the soundproofing material, and determined that the shape memory resin molded product was For the first time, a soundproofing material that satisfactorily prevents noise from entering the engine compartment through holes, which has been attempted in the past but has not been solved, was developed by installing a soundproofing material on the dash of a car that changes its shape. The present invention was developed by discovering that it is possible to prevent noise from entering a room, and the gist of the present invention is as follows: 1. Soundproofing material made of soundproofing material (1) and sound-absorbing material (2) A soundproofing material for an automobile, characterized in that a shape-memory resin molded product (3) is provided in a portion corresponding to the hole of the soundproofing material, and the shape-memory resin molded product is designed to change into a desired shape due to temperature changes. .
２、形状記憶樹脂成形物の温度変化後の記憶状態を配線
するワイヤー（４）、ケーブル等の防音材を貫通する部
品等の径とほぼ同じ径の孔部を形成するように設計して
なることを特徴とする特許請求の範囲第１項記載の自動
車用防音材。2. Wire (4) for wiring the memory state after temperature change of the shape memory resin molding, designed to form a hole with approximately the same diameter as the diameter of the parts, etc. that penetrate the soundproofing material such as cables. A soundproofing material for an automobile according to claim 1, characterized in that:
３、形状記憶樹脂成形物を防音材の遮音材側孔部相当部
位に設けてなることを特徴とする特許請求の範囲第１項
記載の自動車用防音材。3. A sound insulation material for an automobile according to claim 1, characterized in that a shape memory resin molded product is provided in a portion of the sound insulation material corresponding to a side hole of the sound insulation material.
４、形状記憶樹脂成形物を防音材の吸音材側孔部相当部
位に設けてなることを特徴とする特許請求の範囲第１項
記載の自動車用防音材。4. A soundproofing material for an automobile according to claim 1, characterized in that a shape memory resin molded product is provided in a portion of the soundproofing material corresponding to the side hole of the sound absorbing material.
に存する。exists in
防音材を構成する遮音材は、ゴム系、樹脂系、瀝青質系
もしくはこれらを混合した成分をバインダー成分とし、
他の成分として充填材を含有したものを混練し、シート
状に圧延、成形したものである。例えば加熱溶融したゴ
ム等の１種以上と充填材を加熱混線機にて混合し、押出
した後圧延する工程により製造される。The sound insulating material that constitutes the sound insulating material uses a rubber-based, resin-based, bituminous-based or a mixture of these as a binder component,
A material containing a filler as another component is kneaded, then rolled and formed into a sheet. For example, it is manufactured by a process of mixing one or more heat-molten rubbers and fillers in a heating mixer, extruding, and then rolling.
また、吸音材は、動物性、植物性、鉱物性の不連続繊維
材料の１種または２種以上と結合剤とからなる嵩高性不
織布、レジンフェルト、グラスウール、又はニードルフ
ェルト等もしくは、ポリウレタン、ポリスチレン、ポリ
オレフィン系のフオーム材が挙げられる。The sound absorbing material may be a bulky nonwoven fabric made of one or more animal, vegetable, or mineral discontinuous fiber materials and a binder, resin felt, glass wool, needle felt, or polyurethane or polystyrene. and polyolefin foam materials.
防音材は、下金型上の遮音材に吸音材を載置し、そのま
ま上型を下ろし加熱加圧成形したり、予め加熱加圧成形
した遮音材上に吸音材として使用するフオーム材の原液
を金型に注入後、発泡せしめる方法を採用しても良い。The soundproofing material can be made by placing the soundabsorbing material on the soundproofing material on the lower mold, then lowering the upper mold and molding it under heat and pressure, or by placing the undiluted solution of the foam material on the soundproofing material that has been molded under heat and pressure in advance. A method may also be adopted in which the material is injected into a mold and then foamed.
かかる防音材の少なくとも孔部相当位置に設けられる形
状記憶樹脂成形物は、ポリ塩化ビニル、ポリイソプレン
、ポリスチレン−ブタジェン共重合体、ポリメタクリル
酸メチル、ポリカーボネート、ポリノルボルネン、ポリ
ウレタン、ＡＢ樹脂等をガラス転移温度（Ｔｇ点）を超
える温度でワイヤー等にフィツトする花形状に成形し、
その形状を記憶させ、その後ガラス転移温度未満の温度
においてワイヤー等が十分配線できる大きさの孔に変形
したものである。The shape-memory resin molded product provided at least in a position corresponding to the hole of the soundproofing material is made of polyvinyl chloride, polyisoprene, polystyrene-butadiene copolymer, polymethyl methacrylate, polycarbonate, polynorbornene, polyurethane, AB resin, etc. Formed into a flower shape that fits wire etc. at a temperature exceeding the transition temperature (Tg point),
The shape is memorized, and then at a temperature below the glass transition temperature, the hole is transformed into a hole large enough to allow wiring of wires, etc.
形状記憶樹脂には、各種充填材、添加剤を配合した後、
成形することが推奨される。After adding various fillers and additives to the shape memory resin,
Molding is recommended.
形状記憶樹脂成形物に複数の孔部を設け、ワイヤー等を
配線する複数の孔部に対応できるようにすることは好ま
しいことである。It is preferable to provide a plurality of holes in the shape memory resin molded product so that it can accommodate the plurality of holes for wiring wires and the like.
かかる形状記憶樹脂成形物を遮音材の孔部相当位置に設
ける手段としては、ホチキスや接着剤の使用による一体
化でも良く、遮音材の一部として嵌め込んでも良い。The shape memory resin molded product may be provided in a position corresponding to the hole of the sound insulating material by integrating it with a staple or adhesive, or by fitting it as a part of the sound insulating material.
（実施例）
以下に実施例を挙げて本発明のより詳細な理解に供する
。当然のことながら本発明は以下の実施例のみに限定さ
れるものではない。(Example) Examples will be given below to provide a more detailed understanding of the present invention. Naturally, the present invention is not limited to the following examples.
実施例１
ブチルゴム３０重量部、ストレート／ブロン混合アスフ
ァルト５重量部、ＥＶＡ５重量部、炭酸カルシウム５０
重量部及びタルク１０重量部を混練し、１ｍｍ厚に押出
し成形し、遮音材となした。Example 1 30 parts by weight of butyl rubber, 5 parts by weight of straight/brown mixed asphalt, 5 parts by weight of EVA, 50 parts by weight of calcium carbonate
Parts by weight and 10 parts by weight of talc were kneaded and extruded to a thickness of 1 mm to obtain a sound insulating material.
吸音材としては、反毛６０重量部、落綿１０重量部、合
成繊維５重量部、フェノール樹脂粉末２５重量部よりな
るフリースを形成し、１４０℃の加熱炉に導入し、厚さ
１５ｍｍ、面密度６００ｇ／ｍｆの嵩高性不織布を得た
。As a sound absorbing material, a fleece made of 60 parts by weight of recycled wool, 10 parts by weight of fallen cotton, 5 parts by weight of synthetic fibers, and 25 parts by weight of phenolic resin powder was formed, introduced into a heating furnace at 140°C, and heated to a thickness of 15 mm. A bulky nonwoven fabric having a density of 600 g/mf was obtained.
予め加熱した遮音材と吸音材を一体化後、冷金型に載置
し、約１分間加圧成形し、自動車ダッシュ部用防音材と
なした。After integrating the preheated sound insulating material and sound absorbing material, they were placed in a cold mold and press-molded for about 1 minute to form a sound insulating material for an automobile dash.
ポリ塩化ビニルよりなり、Ｔｇ点が６０℃である形状記
憶樹脂を、自動車ダッシュ部の貫通部品及びワイヤーハ
ーネスにすきまなくフィツトする形状に成形した形状記
憶樹脂成形物を、３０℃の状態で、上記貫通部品を通す
作業をする上で効率を良くするために充分な大きさに孔
の径を広げた変形を行ない、上記遮音材と吸音材からな
る自動車ダッシュ部用防音材の遮音付孔部位置に接着剤
により接着した。A shape memory resin molded product made of polyvinyl chloride and having a Tg point of 60°C was molded into a shape that fits seamlessly into the penetration parts of an automobile dash and a wire harness, and the shape memory resin molded product was molded at 30°C. In order to improve the efficiency of passing through parts, the diameter of the hole is expanded to a sufficient size, and the position of the sound-insulating hole in the sound-insulating material for an automobile dash made of the above-mentioned sound-insulating material and sound-absorbing material is determined. It was attached with adhesive.
該自動車ダッシュ部用防音材を自動車組立ラインにて自
動車に取付けた後、各種の貫通部品を取付、自動車が完
成した後、エンジンを運転させた時に発生した熱により
、遮音付孔部に接着した形状記憶樹脂成形物付近は６０
℃以上の温度となり、形状が復元して貫通部品にフィツ
トした。After the sound insulation material for car dash parts was installed on the car on the car assembly line, various penetration parts were installed, and after the car was completed, the sound insulation material was glued to the sound insulation hole by the heat generated when the engine was operated. 60 near the shape memory resin molded product
When the temperature reached ℃ or higher, the shape was restored and it fit into the penetrating part.
実施例２
ポリノルボルネンよりなり、Ｔｇ点が５５℃である形状
記憶樹脂を、自動車ダッシュ部の貫通部品及びワイヤー
ハーネスにすきまなくフィツトする形状に成形した形状
記憶樹脂成形物を、３０℃の状態で、上記貫通部品を通
す作業をする上で効率を良くするために充分な大きさに
孔の径を広げた変形を行ない、実施例１と同様の遮音材
と吸音材からなる自動車ダッシュ部用防音材の遮音付孔
部位置に接着剤により接着した。Example 2 A shape memory resin molded product made of polynorbornene and having a Tg point of 55°C was molded into a shape that fits seamlessly into the penetration parts and wire harnesses of an automobile dash at 30°C. In order to improve the efficiency of the work of passing the penetrating parts through, the diameter of the hole was expanded to a sufficient size, and a soundproofing material for an automobile dash part was made of the same sound-insulating material and sound-absorbing material as in Example 1. It was glued to the sound insulation hole in the material using adhesive.
該自動車ダッシュ部用防音材を自動車組立ラインにて自
動車に取付けた後、各種の貫通部品を取付、自動車が完
成した後、エンジンを運転させた時に発生した熱により
、遮音付孔部に接着した形状記憶樹脂成形物付近は５５
℃以上の温度となり、形状が復元して貫通部品にフィツ
トした。After the sound insulation material for car dash parts was installed on the car on the car assembly line, various penetration parts were installed, and after the car was completed, the sound insulation material was glued to the sound insulation hole by the heat generated when the engine was operated. 55 near the shape memory resin molded product
When the temperature reached ℃ or higher, the shape was restored and it fit into the penetrating part.
実施例３
ポリウレタンよりなり、Ｔｇ点が６０℃である形状記憶
樹脂を、自動車ダッシュ部の貫通部品及びワイヤーハー
ネスにすきまなくフィツトする形状に成形した形状記憶
樹脂成形物を、３０℃の状態で、上記貫通部品を通す作
業をする上で効率を良（するために充分な大きさに孔の
径を広げた変形を行ない、実施例１と同様の遮音材と吸
音材からなる自動車ダッシュ部用防音材の遮音付孔部位
置にホチキスを用いて一体化した。Example 3 A shape memory resin molded product made of polyurethane and having a Tg point of 60°C was molded into a shape that fits seamlessly into the penetration parts and wire harnesses of an automobile dash at 30°C. In order to improve the efficiency of passing the above-mentioned penetrating parts, the hole diameter was expanded to a sufficient size, and the soundproofing material for the automobile dash was made of the same sound insulating material and sound absorbing material as in Example 1. It was integrated using staples at the sound insulation holes in the material.
該自動車ダッシュ部用防音材を自動車組立ラインにて自
動車に取付けた後、各種の貫通部品を取付、自動車が完
成した後、エンジンを運転させた時に発生した熱により
、遮音釘穴部に接着した形状記憶樹脂成形物付近は６０
℃以上の温度となり、形状が復元して貫通部品にフィツ
トした。After the soundproofing material for the car dash was installed on the car on the car assembly line, various penetrating parts were attached, and after the car was completed, the soundproofing material was glued to the soundproof nail hole by the heat generated when the engine was operated. 60 near the shape memory resin molded product
When the temperature reached ℃ or higher, the shape was restored and it fit into the penetrating part.
比較例
実施例１と同様の遮音材と吸音材からなる自動車ダッシ
ュ部用防音材を自動車組立ラインにて自動車に取付けた
後、各種の貫通部品を取付、自動車が完成した。Comparative Example After a soundproofing material for a car dash made of the same soundproofing material and soundabsorbing material as in Example 1 was attached to a car on an automobile assembly line, various penetrating parts were attached and the car was completed.
（発明の効果）
実施例１〜実施例３ともに、自動車がエンジンを回転さ
せてエンジンルームから車室内への騒音を発生させる際
に、騒音の伝達経路であるダッシュインシュレーターの
遮音材の孔部がすきまなく塞がれたため、該孔部の防音
部品は極めて優れた防音効果を有することが判明した。(Effect of the invention) In both Examples 1 to 3, when a car rotates its engine and generates noise from the engine room to the passenger compartment, the holes in the sound insulating material of the dash insulator, which are the noise transmission path, It was found that the soundproofing component in the hole had an extremely excellent soundproofing effect because it was filled without any gaps.
第１図は形状記憶樹脂成形物が接着された防音材孔部に
ワイヤーを通した部分斜視図、第２図は、第１図の形状
記憶樹脂成形物が復元した状態の部分斜視図、第３図は
、従来の防音材孔部にワイヤーを通した部分斜視図。
（１）遮音材、（２）吸音材、（３）形状記憶樹脂成形
物、（３′）復元した状態の形状記憶樹脂成形物、（４
）ワイヤー。
特許出願人 日本特殊塗料株式会社
第１図
第２図
第３図Fig. 1 is a partial perspective view of a wire passed through a soundproofing material hole to which a shape memory resin molded product is adhered, and Fig. 2 is a partial perspective view of the shape memory resin molded product of Fig. 1 in a restored state. Figure 3 is a partial perspective view of a wire passed through a hole in a conventional soundproofing material. (1) Sound insulation material, (2) Sound absorption material, (3) Shape memory resin molded product, (3') Shape memory resin molded product in restored state, (4
)wire. Patent applicant Nippon Tokushu Toyo Co., Ltd. Figure 1 Figure 2 Figure 3
Claims (1)
て、形状記憶樹脂成形物（３）を防音材の孔部相当部位
に設け、温度変化により形状記憶樹脂成形物が所望の形
状に変化するよう設計してなることを特徴とする自動車
用防音材。 ２、形状記憶樹脂成形物の温度変化後の記憶状態を配線
するワイヤー（４）、ケーブル等の防音材を貫通する部
品等の径とほぼ同じ径の孔部を形成するように設計して
なることを特徴とする特許請求の範囲第１項記載の自動
車用防音材。 ３、形状記憶樹脂成形物を防音材の遮音打側孔部相当部
位に設けてなることを特徴とする特許請求の範囲第１項
記載の自動車用防音材。 ４、形状記憶樹脂成形物を防音材の吸音材側孔部相当部
位に設けてなることを特徴とする特許請求の範囲第１項
記載の自動車用防音材。[Claims] 1. In a soundproofing material consisting of a soundproofing material (1) and a soundabsorbing material (2), a shape-memory resin molded product (3) is provided in a portion corresponding to the hole of the soundproofing material, and the shape-memory resin is molded by temperature change. A soundproofing material for automobiles, characterized in that the molded product is designed to change into a desired shape. 2. Wire (4) for wiring the memory state after temperature change of the shape memory resin molding, designed to form a hole with approximately the same diameter as the diameter of the parts, etc. that penetrate the soundproofing material such as cables. A soundproofing material for an automobile according to claim 1, characterized in that: 3. A sound insulation material for an automobile according to claim 1, characterized in that a shape memory resin molded product is provided in a portion of the sound insulation material corresponding to the sound insulation hole. 4. A soundproofing material for an automobile according to claim 1, characterized in that a shape memory resin molded product is provided in a portion of the soundproofing material corresponding to the side hole of the sound absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2299764A JPH04173446A (en) | 1990-11-07 | 1990-11-07 | Sound-proofing material for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2299764A JPH04173446A (en) | 1990-11-07 | 1990-11-07 | Sound-proofing material for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04173446A true JPH04173446A (en) | 1992-06-22 |
Family
ID=17876689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2299764A Pending JPH04173446A (en) | 1990-11-07 | 1990-11-07 | Sound-proofing material for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04173446A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112319396A (en) * | 2020-11-27 | 2021-02-05 | 安徽江淮汽车集团股份有限公司 | Enclose sound insulation pad subassembly and car before in car |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01276518A (en) * | 1988-04-27 | 1989-11-07 | Yazaki Corp | Grommet |
-
1990
- 1990-11-07 JP JP2299764A patent/JPH04173446A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01276518A (en) * | 1988-04-27 | 1989-11-07 | Yazaki Corp | Grommet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112319396A (en) * | 2020-11-27 | 2021-02-05 | 安徽江淮汽车集团股份有限公司 | Enclose sound insulation pad subassembly and car before in car |
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