JPH11124000A - Vehicle air bag door structure - Google Patents
Vehicle air bag door structureInfo
- Publication number
- JPH11124000A JPH11124000A JP9290584A JP29058497A JPH11124000A JP H11124000 A JPH11124000 A JP H11124000A JP 9290584 A JP9290584 A JP 9290584A JP 29058497 A JP29058497 A JP 29058497A JP H11124000 A JPH11124000 A JP H11124000A
- Authority
- JP
- Japan
- Prior art keywords
- air bag
- airbag
- skin
- opening
- airbag door
- 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
- 239000011162 core material Substances 0.000 claims abstract description 23
- 239000006260 foam Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 9
- 150000001336 alkenes Chemical class 0.000 claims description 7
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 7
- 229920005672 polyolefin resin Polymers 0.000 claims description 6
- 230000000704 physical effect Effects 0.000 claims description 4
- 229920002397 thermoplastic olefin Polymers 0.000 abstract 2
- 238000003776 cleavage reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000007017 scission Effects 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- -1 hydroxyl group compound Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Air Bags (AREA)
- Instrument Panels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、エアバッグ装置
本体の前面に位置するポリオレフィン系熱可塑性エラス
トマーからなるエアバッグドアや表皮が、ウレタン材の
発泡層との接着性や表皮への塗装性が向上するように、
変性させたオレフィン系樹脂をエアバッグドアや表皮に
含有させて成形した車両用エアバッグドア構造に関する
ものである。BACKGROUND OF THE INVENTION The present invention relates to an airbag door and a skin made of a polyolefin-based thermoplastic elastomer located on the front surface of an airbag device main body. To improve
The present invention relates to a vehicle airbag door structure formed by incorporating a modified olefin resin into an airbag door or skin.
【０００２】[0002]
【従来の技術】従来のこの種のものとしては、例えば、
実開昭６３ー１０１２５５号公報に記載の図３に示すよ
うなものがある。2. Description of the Related Art Conventional types of this type include, for example,
There is one shown in FIG. 3 described in Japanese Utility Model Laid-Open No. 63-101255.
【０００３】図３中の１は車両用エアバッグドア構造で
あり、エアバッグ膨出開口２を有する合成樹脂製の芯材
１１と、ウレタン材の発泡層１２と、この発泡層１２の
表面に形成された表皮１３の三層で一体に構成されてい
る。[0003] Reference numeral 1 in FIG. 3 denotes a vehicle airbag door structure, which includes a synthetic resin core material 11 having an airbag bulging opening 2, a urethane foam layer 12, and a surface of the foam layer 12. The three layers of the formed skin 13 are integrally formed.
【０００４】また、エアバッグ膨出開口２は、その開口
開裂溝である三辺の薄肉部１１ａと、ヒンジ溝である他
の一辺の薄肉部１１ｃとにより略長方形に形成されてい
る。[0004] The airbag inflating opening 2 is formed in a substantially rectangular shape by a thin portion 11a on three sides which is an opening cleavage groove and a thin portion 11c on another side which is a hinge groove.
【０００５】またエアバッグ膨出開口２は、薄肉部１１
ａの各辺に沿い、かつ発泡層１２に向かって突出する突
起部１１ｂと、他の一辺の薄肉部１１ｃを覆うように発
泡層１２の中に介装させた織布１４とを備えている。[0005] The airbag bulging opening 2 has a thin portion 11.
a, a protruding portion 11b protruding toward the foam layer 12 along each side, and a woven fabric 14 interposed in the foam layer 12 so as to cover the thin portion 11c on the other side. .
【０００６】一方、エアバッグ膨出開口２に対向するイ
ンストルメントパネル１の背面には、図示省略のエアバ
ッグ装置本体が配設されており、エアバッグ装置本体の
作動に伴って、このエアバッグから受ける膨出圧によ
り、薄肉部１１ａの各辺が開裂され、この薄肉部１１ａ
に設けた突起部１１ｂで発泡層１２と表皮１３とを切り
裂く。そして、他の一辺の薄肉部１１ｃと織布１４とを
ヒンジとして膨出開口２を開成することによりエアバッ
グは車室内へ膨出される。On the other hand, an airbag device main body (not shown) is provided on the back of the instrument panel 1 facing the airbag inflating opening 2, and the airbag device main body is operated in accordance with the operation of the airbag device main body. Each side of the thin portion 11a is cleaved by the swelling pressure received from the thin portion 11a.
The foam layer 12 and the skin 13 are cut off by the protrusions 11b provided on the side. The airbag is swelled into the vehicle interior by opening the swelling opening 2 using the thin portion 11c on the other side and the woven fabric 14 as hinges.
【０００７】なお、材質的にピュアでリサイクル性が高
く使用量が増加しているオレフィン系の表皮１３や芯材
１１は、発泡層１２との接着性が低く、また表皮１３に
塗装する場合の塗装性も低いので、プライマー，プラズ
マ，フレーム等の前処理を行って接着性を向上させ、エ
アバッグ膨出時の衝撃で発泡層１２等が粉砕され飛散さ
れるのを防ぐようにしている。The olefin-based skin 13 and the core material 11, which are pure in material, have high recyclability and are used in a large amount, have low adhesiveness to the foam layer 12 and have a low viscosity. Since the paintability is low, the pretreatment of the primer, the plasma, the frame, and the like is performed to improve the adhesiveness, and the foam layer 12 and the like are prevented from being crushed and scattered by the impact when the airbag is expanded.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、このよ
うな従来のものにあっては、接着性を上げる必要から前
処理を行うので作業工程が増えて高価になるという課題
を有していた。However, such a conventional device has a problem that the number of working steps increases and the cost increases because a pretreatment is performed to improve the adhesiveness.
【０００９】そこで、この発明は、前処理することなく
オレフィン系の表皮やエアバッグドアに接着性を持たせ
て、エアバッグ膨出時に発泡層が粉砕され乗員に危害を
与える虞のない車両用エアバッグドア構造を提供するこ
とにある。Accordingly, the present invention provides an olefin-based skin or an airbag door having an adhesive property without any pretreatment, so that the foamed layer is crushed when the airbag is inflated, and there is no danger to the occupant. An object of the present invention is to provide an airbag door structure.
【００１０】[0010]
【課題を解決するための手段】上記の目的を達成するた
めに、請求項１に記載された発明は、樹脂製芯材の表面
に発泡層と表皮とがこの順に積層一体に形成されるイン
ストルメントパネルの裏面に、エアバッグ装置本体を配
置してなる車両用エアバッグ装置において、前記樹脂製
芯材にエアバッグ膨出用の開口部を設けると共に、該開
口部を閉成するエアバッグドアを設け、前記表皮と前記
エアバッグドアは、それぞれ所定物性のオレフィン系熱
可塑性エラストマーにより形成されると共に、該オレフ
ィン系熱可塑性エラストマーには、ヒドロキシル基含有
化合物で変性させたポリオレフィン樹脂をそれぞれ適量
含有させたことを特徴としている。Means for Solving the Problems In order to achieve the above object, an invention according to claim 1 is an instrument in which a foam layer and a skin are integrally formed on a surface of a resin core material in this order. In a vehicle airbag device having an airbag device main body disposed on a back surface of an instrument panel, an airbag door for providing an opening for airbag inflation in the resin core material and closing the opening. The skin and the airbag door are each formed of an olefin-based thermoplastic elastomer having predetermined physical properties, and the olefin-based thermoplastic elastomer contains an appropriate amount of a polyolefin resin modified with a hydroxyl group-containing compound. It is characterized by having made it.
【００１１】[0011]
【発明の実施の形態】本発明の車両用エアバッグドア構
造の実施の形態を図１に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle airbag door structure of the present invention will be described with reference to FIG.
【００１２】図１（ａ）は、インストルメントパネルの
斜視図で、図１（ｂ）、（ｃ）は、それぞれ図１（ａ）
のＡ−Ａ線、Ｂ−Ｂ線に沿った断面図である。FIG. 1A is a perspective view of an instrument panel, and FIGS. 1B and 1C respectively show FIG. 1A.
FIG. 3 is a cross-sectional view taken along lines AA and BB of FIG.
【００１３】まず、構成を説明すると図１（ａ）、
（ｂ）、（ｃ）において、２１はインストルメントパネ
ル、２２は樹脂製芯材で、２５は芯材２２の表面を覆う
表皮であり、２６は表皮２５と芯材２２との間にウレタ
ン材を注入発泡させて双方を接着し三層一体に接合させ
た発泡層である。First, the structure will be described with reference to FIG.
In (b) and (c), 21 is an instrument panel, 22 is a resin core material, 25 is a skin covering the surface of the core material 22, and 26 is a urethane material between the skin 25 and the core material 22 Is a foamed layer formed by injecting foaming to bond the two together and integrally joining the three layers.
【００１４】また、芯材２２にはこの芯材２２の背面か
ら突状の上下リブ部２２ｃ、２２ｃを設け、この上下リ
ブ部２２ｃ、２２ｃの間にエアバッグ膨出用の開口部２
２ａを設けている。また、この上下リブ部にはエアバッ
グ装置本体３０を装着し、このエアバッグ装置本体３０
の前面に位置して芯材の開口部２２ａを閉成するように
エアバッグドア２３を設けている。The core member 22 is provided with upper and lower rib portions 22c, 22c protruding from the back surface of the core member 22, and an opening 2 for inflating the airbag is provided between the upper and lower rib portions 22c, 22c.
2a is provided. An airbag device main body 30 is attached to the upper and lower ribs, and the airbag device main body 30
An airbag door 23 is provided so as to close the opening 22a of the core member at the front of the airbag.
【００１５】このエアバッグドア２３は別体に形成さ
れ、開口部２２ａの開口端面２２ｂに接合させて開口部
２２ａを閉成させている。The airbag door 23 is formed separately and is joined to the opening end face 22b of the opening 22a to close the opening 22a.
【００１６】また、別体に形成したエアバッグドア２３
をインサート成形で、芯材２２と接合させてもよい。勿
論エアバッグドア２３は別体に形成することなく、開口
部２２ａを設けて成形された芯材２２の開口部２２ａに
向けて、エアバッグドア２３材である熱可塑性エラスト
マーを注入する、いわゆる２色成形で芯材２２とエアバ
ッグドア２３とが融着するように一体成形してもよい。Further, an airbag door 23 formed separately is provided.
May be joined to the core material 22 by insert molding. Of course, the airbag door 23 is not formed separately, but a thermoplastic elastomer, which is a material of the airbag door 23, is injected into the opening 22a of the core material 22 provided with the opening 22a. The core member 22 and the airbag door 23 may be integrally molded by color molding so that the core member 22 and the airbag door 23 are fused.
【００１７】また、エアバッグドア２３には、芯材２２
の開口部２２ａの上側のリブ部２２ｃ側の近傍の接合位
置をヒンジ部２４とし、このヒンジ部２４の両端に繋が
る断面Ｕ字状の開裂溝２３ａを設けてほぼ長方形のエア
バッグ膨出部２７を区画形成させている。The airbag door 23 has a core material 22.
A joint portion near the upper rib portion 22c side of the opening portion 22a is a hinge portion 24, and a substantially rectangular airbag bulging portion 27 having a U-shaped cleavage groove 23a connected to both ends of the hinge portion 24 is provided. Is formed.
【００１８】なお、ここで表皮２５やエアバッグドア２
３の使用される材質としては、耐低温脆化性・耐衝撃性
などの物性に優れたオレフィン系の熱可塑性エラストマ
ーで成形されている。そして、この熱可塑性エラストマ
ーにはヒドロキシル基を有する有機不飽和化合物で変性
させたオレフィン系樹脂を、表皮２５やエアバッグドア
２３の要求物性や感触に見合った量を含有させている。The skin 25 and the airbag door 2 are used here.
The material 3 is formed of an olefin-based thermoplastic elastomer having excellent physical properties such as low-temperature embrittlement resistance and impact resistance. The thermoplastic elastomer contains an olefin resin modified with an organic unsaturated compound having a hydroxyl group in an amount suitable for the required physical properties and feel of the skin 25 and the airbag door 23.
【００１９】このように構成されたエアバッグドア２３
の作動について説明する。The airbag door 23 thus configured
The operation of will be described.
【００２０】芯材２２の背面の所定の位置に配設された
エアバッグ装置本体３０が作動し、エアバッグが膨出し
エアバッグドア２３に膨出圧がかかると、エアバッグド
ア２３のエアバッグ膨出部２７は、開裂溝２３ａから開
裂されヒンジ部２４に沿って回動し開成される。When the airbag device main body 30 disposed at a predetermined position on the back surface of the core member 22 is operated and the airbag is inflated and an inflation pressure is applied to the airbag door 23, the airbag of the airbag door 23 is opened. The bulging portion 27 is cleaved from the cleavage groove 23a and pivots along the hinge portion 24 to be opened.
【００２１】このように回動したエアバッグ膨出部２７
は、発泡層２６を切断し表皮２５に突接し、表皮２５を
も開裂してエアバッグは車室内に膨出される。The airbag bulging portion 27 rotated in this manner.
Cuts the foam layer 26 and makes abutting contact with the skin 25, and also cleaves the skin 25 so that the airbag swells into the vehicle interior.
【００２２】この時、エアバッグドア２３や表皮２５は
ヒドロキシル基化合物で変性させたポリオレフィン樹脂
を含有していることでラジカル化され、ウレタン材であ
る発泡層２６と強く接合しているので発泡層２６が接着
したまま開成し、発泡層２６が粉砕され飛散して乗員に
危害を加える虞がない。At this time, the airbag door 23 and the skin 25 are radicalized by containing a polyolefin resin modified with a hydroxyl group compound and are strongly bonded to the foam layer 26 which is a urethane material. There is no danger that the foamed layer 26 will be crushed and scattered to harm the occupant.
【００２３】[0023]
【変形例】変形例を図２に基づいて説明する。[Modification] A modification will be described with reference to FIG.
【００２４】図２は、図１（ａ）のＢ−Ｂ線に沿った断
面図である。図２において、２２は芯材で、２２ａは芯
材２２に設けたエアバッグ膨出用の開口部で、２３はこ
の開口部を閉成する開裂溝２３ａを有するエアバッグド
アである。FIG. 2 is a sectional view taken along the line BB of FIG. In FIG. 2, reference numeral 22 denotes a core material, 22a denotes an airbag inflating opening provided in the core material 22, and 23 denotes an airbag door having a cleavage groove 23a closing the opening.
【００２５】前述の実施の形態と異なる点は、エアバッ
グドア２３が芯材２２の開口部２２ａの周縁部２２ｃに
重ね接合させていることである。実施の形態の開口部２
２ａの開口端面２２ｂにエアバッグドア２３を接合させ
たものより接合面積が自由に大きくとれる点に特徴があ
る。The difference from the above-described embodiment is that the airbag door 23 is overlapped and joined to the peripheral portion 22c of the opening 22a of the core member 22. Opening 2 of the embodiment
It is characterized in that the joining area can be freely larger than that obtained by joining the airbag door 23 to the opening end face 22b of the opening 2a.
【００２６】その他の構成、作用は実施の形態と同様で
あるので説明を省略する。The other configuration and operation are the same as those of the embodiment, and the description is omitted.
【００２７】[0027]
【発明の効果】以上説明してきたように、請求項１の発
明によれば、ヒドロキシル基化合物で変性されたポリオ
レフィン樹脂の混入によって、表皮やエアバッグドアは
ラジカル性を有する熱可塑性エラストマーとなり、プラ
イマー、フレーム、コロナ放電、プラズマ等の前処理を
行わなくても、ウレタン材である発泡層との接着性が向
上する。As described above, according to the first aspect of the present invention, by mixing the polyolefin resin modified with the hydroxyl group compound, the skin and the airbag door become a thermoplastic elastomer having a radical property, Even if pretreatment such as frame, corona discharge, and plasma is not performed, the adhesiveness with the urethane foam layer is improved.
【００２８】したがって、エアバッグ膨出時にエアバッ
グドアに設けた開裂溝から安定して開裂されると同時
に、発泡層や表皮が粉砕されて飛散することがなく乗員
に危害を与える虞がない。また、前処理が不要となる分
コストの低減も図れる。Therefore, when the airbag is inflated, the airbag is stably cleaved from the cleavage groove provided in the airbag door, and at the same time, the foamed layer and the outer skin are not crushed and scattered, and there is no danger to the occupant. Further, the cost can be reduced because the preprocessing is not required.
【図１】（ａ）は、本発明の実施の形態に係るインスト
ルメントパネルの斜視図である。 （ｂ）は、図１
（ａ）のＡ−Ａ線に沿った断面図である。（ｃ）は、図
１（ａ）のＢ−Ｂ線に沿った断面図である。FIG. 1A is a perspective view of an instrument panel according to an embodiment of the present invention. FIG.
It is sectional drawing along the AA of (a). FIG. 2C is a cross-sectional view taken along line BB of FIG.
【図２】同実施の形態に係る変形例を示す図１（ａ）の
Ｂ−Ｂ線に沿った断面図である。FIG. 2 is a cross-sectional view taken along the line BB of FIG. 1A, showing a modification of the embodiment.
【図３】従来例を示すインストルメントパネルの要部断
面図である。FIG. 3 is a sectional view of a main part of an instrument panel showing a conventional example.
２１…車両用エアバッグドア構造 ２２…芯材 ２２ａ…開口部 ２２ｂ…開口端面 ２３…エアバッグドア ２５…表皮 DESCRIPTION OF SYMBOLS 21 ... Vehicle airbag door structure 22 ... Core material 22a ... Opening 22b ... Opening end face 23 ... Airbag door 25 ... Skin
Claims (1)
の順に積層一体に形成されるインストルメントパネルの
裏面に、エアバッグ装置本体を配置してなる車両用エア
バッグ装置において、 前記樹脂製芯材にエアバッグ膨出用の開口部を設けると
共に、該開口部を閉成するエアバッグドアを設け、前記
表皮と前記エアバッグドアは、それぞれ所定物性のオレ
フィン系熱可塑性エラストマーにより形成されると共
に、 該オレフィン系熱可塑性エラストマーには、ヒドロキシ
ル基含有化合物で変性させたポリオレフィン樹脂をそれ
ぞれ適量含有させたことを特徴とする車両用エアバッグ
ドア構造。1. An airbag device for a vehicle, comprising an airbag device main body disposed on a back surface of an instrument panel in which a foam layer and a skin are integrally formed in this order on a surface of a resin core material. An opening for airbag inflation is provided in the resin core material, and an airbag door for closing the opening is provided. The skin and the airbag door are each formed of an olefin-based thermoplastic elastomer having predetermined physical properties. And a suitable amount of a polyolefin resin modified with a hydroxyl group-containing compound in the olefin-based thermoplastic elastomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9290584A JPH11124000A (en) | 1997-10-23 | 1997-10-23 | Vehicle air bag door structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9290584A JPH11124000A (en) | 1997-10-23 | 1997-10-23 | Vehicle air bag door structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11124000A true JPH11124000A (en) | 1999-05-11 |
Family
ID=17757918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9290584A Pending JPH11124000A (en) | 1997-10-23 | 1997-10-23 | Vehicle air bag door structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11124000A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655667A (en) * | 2018-08-20 | 2020-01-07 | 南通普力马弹性体技术有限公司 | Adhesion method of slush-molded TPE (thermoplastic elastomer) skin and foaming material and preparation method of interior trim panel |
| KR20200059804A (en) * | 2018-11-22 | 2020-05-29 | 한화글로벌에셋 주식회사 | Flame treatment device with PAB door assembly function |
-
1997
- 1997-10-23 JP JP9290584A patent/JPH11124000A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110655667A (en) * | 2018-08-20 | 2020-01-07 | 南通普力马弹性体技术有限公司 | Adhesion method of slush-molded TPE (thermoplastic elastomer) skin and foaming material and preparation method of interior trim panel |
| KR20200059804A (en) * | 2018-11-22 | 2020-05-29 | 한화글로벌에셋 주식회사 | Flame treatment device with PAB door assembly function |
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