JP3417295B2 - Vehicle interior member having an airbag door - Google Patents
Vehicle interior member having an airbag doorInfo
- Publication number
- JP3417295B2 JP3417295B2 JP11958598A JP11958598A JP3417295B2 JP 3417295 B2 JP3417295 B2 JP 3417295B2 JP 11958598 A JP11958598 A JP 11958598A JP 11958598 A JP11958598 A JP 11958598A JP 3417295 B2 JP3417295 B2 JP 3417295B2
- Authority
- JP
- Japan
- Prior art keywords
- hinge
- airbag
- airbag door
- groove
- door portion
- 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.)
- Expired - Fee Related
Links
- 229920005989 resin Polymers 0.000 claims description 36
- 239000011347 resin Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 32
- 238000005452 bending Methods 0.000 claims description 26
- 239000006260 foam Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims 1
- 210000003491 skin Anatomy 0.000 description 26
- 230000000694 effects Effects 0.000 description 15
- 239000010410 layer Substances 0.000 description 12
- 238000000465 moulding Methods 0.000 description 8
- 238000001746 injection moulding Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 229920002725 thermoplastic elastomer Polymers 0.000 description 3
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 235000021189 garnishes Nutrition 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Air Bags (AREA)
- Instrument Panels (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明はエアバッグ装置のド
ア部を車両用内装部材に設けたエアバッグドア部を有す
る車両用内装部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle interior member having an airbag door portion in which a door portion of an airbag device is provided in the vehicle interior member.
【０００２】[0002]
【従来の技術】従来からエアバッグドア部を有するイン
ストルメントパネル、ドアトリム、センタピラーガーニ
ッシュ等の車両用内装部材が知られており、その一例が
特開平８−１９２６６６号公報に示されている。2. Description of the Related Art Conventionally, vehicle interior members such as an instrument panel having an airbag door portion, a door trim, a center pillar garnish, etc. have been known, and an example thereof is disclosed in Japanese Patent Application Laid-Open No. 8-192666.
【０００３】この公報に開示されているエアバッグドア
部を有するインストルメントパネルでは、エアバッグド
ア用の開口部を有するインストルメントパネルの本体部
を熱可塑性樹脂で射出成形した後に、エアバッグドア部
（開口部）を熱可塑性エラストマーで射出成形する、所
謂２色成形（ダブルインジェクション成形）によって、
インストルメントパネルの本体部とエアバッグドア部と
が一体成形されている。また、一般に知られた構造とし
て、別体のエアバッグドア（熱可塑性エラストマーで射
出成形したもの）を後付けしたインストルメントパネル
がある。In the instrument panel having the air bag door portion disclosed in this publication, the air bag door portion is formed by injection molding the main body portion of the instrument panel having an opening for the air bag door with a thermoplastic resin. By injection molding (opening) with a thermoplastic elastomer, so-called two-color molding (double injection molding),
The main body of the instrument panel and the airbag door are integrally formed. Further, as a generally known structure, there is an instrument panel to which a separate airbag door (which is injection-molded with a thermoplastic elastomer) is attached later.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うなエアバッグドア部を有するインストルメントパネル
において、エアバッグドア部の樹脂を本体部の樹脂と変
えることなく、インストルメントパネル全体を同一の硬
質樹脂材料で成形した場合には、本体部の樹脂の特性
上、本体部の樹脂の弾性率が、一般的に使用されるエア
バッグドア部の樹脂（ＴＰＯ）の弾性率に対し６〜７
倍、引張強度で１．５〜２倍と高いため、エアバッグド
ア部に形成される展開用ヒンジ部の曲げ力が、特に極低
温時では高くなり、エアバッグドア部が展開し難くなる
と共に、ヒンジ部が展開時に破損することもある。However, in the instrument panel having such an airbag door portion, the entire instrument panel is made of the same hard resin without changing the resin of the airbag door portion to the resin of the main body portion. When molded with a material, due to the characteristics of the resin of the main body, the elastic modulus of the resin of the main body is 6 to 7 relative to the elastic modulus of the resin (TPO) of the commonly used airbag door.
Since the tensile strength is twice as high as 1.5 to 2 times, the bending force of the deploying hinge formed on the airbag door portion becomes high especially at extremely low temperature, and the airbag door portion becomes difficult to deploy. The hinge part may be damaged during deployment.
【０００５】なお、ヒンジ部の樹脂厚を薄くし過ぎる
と、成形時の欠肉、ベコツキや変形が発生する。また、
このような不具合は、エアバッグドア部とインストルメ
ントパネルの本体部とを別々に成形した後に係止爪やビ
ス等によって一体としたインストルメントパネルのヒン
ジ部においても発生する。If the resin thickness of the hinge portion is made too thin, a wall thickness, sticking or deformation will occur during molding. Also,
Such a problem also occurs in the hinge portion of the instrument panel in which the airbag door portion and the main body portion of the instrument panel are separately molded and then integrated by locking claws and screws.
【０００６】本発明は上記事実を考慮し、車両用内装部
材のエアバッグドア部と本体部とを同一樹脂で成形した
場合に、エアバッグドア部展開時のヒンジ部の破損を防
止できるエアバッグドア部を有する車両用内装部材を得
ることが目的である。In view of the above facts, the present invention is capable of preventing the hinge portion from being damaged when the airbag door portion is deployed when the airbag door portion and the main body portion of the vehicle interior member are molded from the same resin. It is an object to obtain a vehicle interior member having a door portion.
【０００７】[0007]
【課題を解決するための手段】請求項１記載の本発明
は、本体部と同一の硬質樹脂材料で一体成形または別体
とされたエアバッグドア部を有する車両用内装部材であ
って、前記エアバッグドア部に形成され、エアバッグ袋
体展開時に開裂するティア部と、前記エアバッグドア部
のティア部側に形成され、エアバッグ袋体展開時に折れ
曲がる第１ヒンジと、前記エアバッグドア部のエアバッ
グケース取付部側に形成され、エアバッグ袋体展開時に
前記第１ヒンジに続いて折れ曲がる第２ヒンジと、前記
エアバッグドア部における、前記第２ヒンジよりエアバ
ッグケース取付部側に形成され、エアバッグ袋体展開時
に前記第２ヒンジに続いて順次折れ曲がる複数の補助ヒ
ンジと、のうちの少なくとも前記第１ヒンジと第２ヒン
ジとを有し、少なくとも第１ヒンジと第２ヒンジは、所
定の前後幅にわたって所定板厚の薄肉部として形成さ
れ、且つ該薄肉部の前後幅の中間に曲げポイントとなる
溝が設定されており、第１ヒンジの溝部の板厚が第２ヒ
ンジの溝部の板厚より薄いことを特徴とする。According to a first aspect of the present invention, there is provided an interior member for a vehicle having an air bag door portion integrally formed with or separated from the same hard resin material as the main body portion. A tear portion formed on the airbag door portion and cleaving when the airbag bag is deployed, a first hinge formed on the tear portion side of the airbag door portion and bent when the airbag bag is deployed, and the airbag door portion A second hinge that is formed on the side of the airbag case attachment portion and that bends after the first hinge when the airbag body is deployed; and a portion of the airbag door portion that is closer to the airbag case attachment portion than the second hinge. by a plurality of auxiliary hinges sequentially bent following the second hinge, and at least the first hinge and the second hinge of the possess at airbag deployment, fewer The first hinge and a second hinge also is, where
Formed as a thin part with a predetermined plate thickness over a fixed front-back width
And becomes a bending point in the middle of the front-rear width of the thin portion.
The groove is set, and the plate thickness of the groove portion of the first hinge is the second
It is characterized by being thinner than the plate thickness of the groove part of the flange .
【０００８】従って、エアバッグ袋体展開時に、エアバ
ッグドア部が少なくとも第１ヒンジと、第１ヒンジに続
いて折れ曲がる第２ヒンジとで、２段階に折れ曲がりな
がら開く。この結果、エアバッグドアの開き度合を維持
しながら、曲げ部分の局部的な伸びを低減できるため、
エアバッグドアの曲げ開き時に生じ易いヒンジ部の破損
を防止できる。また、エアバッグドア部と本体部とが、
同一の硬質樹脂材料で一体成形または別体とされた車両
用内装部材において、ヒンジ部の樹脂厚を薄くし過ぎる
ことが無いため、外観品質が低下することも無い。ま
た、第１ヒンジの溝部の板厚が第２ヒンジの溝部の板厚
より薄いため、確実に第１ヒンジ、第２ヒンジの順に折
れ曲がる。また、エアバッグドア部の曲げポイントに溝
を形成したので、曲げ部分の表面展開長をかせぎ、実質
伸び率を小さくできるため、エアバッグ袋体展開時の曲
げによるヒンジ部の破損を有効に防止できる。 Therefore, when the airbag body is deployed, the airbag door portion is opened while bending in two steps by at least the first hinge and the second hinge that is bent after the first hinge. As a result, it is possible to reduce the local extension of the bent portion while maintaining the opening degree of the airbag door,
It is possible to prevent the hinge part from being easily damaged when the airbag door is bent and opened. In addition, the airbag door part and the main body part,
In the vehicle interior member integrally formed of the same hard resin material or formed separately, the resin thickness of the hinge portion does not become too thin, and therefore the appearance quality does not deteriorate. Well
Also, the thickness of the groove portion of the first hinge is equal to the thickness of the groove portion of the second hinge.
Since it is thinner, be sure to fold the first hinge and the second hinge in this order.
Turn around. Also, make sure that there is a groove at the bending point of the airbag door.
Since it is formed, the surface development length of the bent part is earned and the
Because the expansion rate can be reduced, the bending of the airbag
It is possible to effectively prevent the hinge portion from being damaged due to a barb.
【０００９】請求項２記載の本発明は、本体部と同一の
硬質樹脂材料で一体成形または別体とされた基材を有
し、基材の表面を、表皮または発泡層と表皮で覆ったエ
アバッグドア部を有する車両用内装部材であって、前記
エアバッグドア部に形成され、エアバッグ袋体展開時に
開裂するティア部と、前記エアバッグドア部のティア部
側に形成され、エアバッグ袋体展開時に折れ曲がる第１
ヒンジと、前記エアバッグドア部のエアバッグケース取
付部側に形成され、エアバッグ袋体展開時に前記第１ヒ
ンジに続いて折れ曲がる第２ヒンジと、前記エアバッグ
ドア部における、前記第２ヒンジよりエアバッグケース
取付部側に形成され、エアバッグ袋体展開時に前記第２
ヒンジに続いて順次折れ曲がる複数の補助ヒンジと、の
うちの少なくとも前記第１ヒンジと第２ヒンジとを有
し、少なくとも第１ヒンジと第２ヒンジは、所定の前後
幅にわたって所定板厚の薄肉部として形成され、且つ該
薄肉部の前後幅の中間に曲げポイントとなる溝が設定さ
れており、第１ヒンジの溝部の板厚が第２ヒンジの溝部
の板厚より薄いことを特徴とする。According to a second aspect of the present invention, there is provided a base material which is integrally molded with or separate from the same hard resin material as the main body, and the surface of the base material is covered with a skin or a foam layer and a skin. An interior member for a vehicle having an air bag door portion, the tear portion being formed on the air bag door portion and cleaving when the air bag body is deployed, and the air bag formed on the tear portion side of the air bag door portion. The first that bends when the bag is unfolded
A hinge, a second hinge formed on the airbag case attachment portion side of the airbag door portion and bent after the first hinge when the airbag body is deployed, and a second hinge in the airbag door portion from the second hinge It is formed on the side of the airbag case mounting portion, and when the airbag bag is deployed, the second
At least the first hinge and the second hinge among a plurality of auxiliary hinges that are bent sequentially after the hinge;
However, at least the first hinge and the second hinge have a predetermined front and rear
Is formed as a thin portion having a predetermined plate thickness over the width, and
A groove that serves as a bending point is set in the middle of the width of the thin wall.
And the thickness of the groove portion of the first hinge is equal to the groove portion of the second hinge.
It is characterized by being thinner than the plate thickness of .
【００１０】従って、エアバッグ袋体展開時に、エアバ
ッグドア部が少なくとも第１ヒンジと、第１ヒンジに続
いて折れ曲がる第２ヒンジとで、２段階に折れ曲がりな
がら開く。この結果、エアバッグドアの開き度合を維持
しながら、曲げ部分の局部的な伸びを低減できるため、
表皮インサート、表皮貼り込み、発泡タイプの車両用内
装部材においても、エアバッグドアの曲げ開き時に生じ
易いドアヒンジ部の破損を防止できる。また、第１ヒン
ジの溝部の板厚が第２ヒンジの溝部の板厚より薄いた
め、確実に第１ヒンジ、第２ヒンジの順に折れ曲がる。
また、エアバッグドア部の曲げポイントに溝を形成した
ので、曲げ部分の表面展開長をかせぎ、実質伸び率を小
さくできるため、エアバッグ袋体展開時の曲げによるヒ
ンジ部の破損を有効に防止できる。 Therefore, when the air bag body is deployed, the air bag door portion is opened while bending in two steps by at least the first hinge and the second hinge that is bent after the first hinge. As a result, it is possible to reduce the local extension of the bent portion while maintaining the opening degree of the airbag door,
Even in the skin insert, the skin stuck, and the foam type vehicle interior member, it is possible to prevent damage to the door hinge portion that tends to occur when the airbag door is bent and opened. Also, the first hin
The thickness of the groove of the groove is thinner than the thickness of the groove of the second hinge.
Therefore, the first hinge and the second hinge are surely bent in this order.
Also, a groove was formed at the bending point of the airbag door.
Therefore, the surface expansion length of the bent part is earned to reduce the actual elongation rate.
Because it can be opened, it is possible to prevent
It is possible to effectively prevent breakage of the hinge part.
【００１１】[0011]
【００１２】[0012]
【００１３】請求項３記載の本発明は、請求項１、２の
何れか１項に記載のエアバッグドア部を有する車両用内
装部材において、第１ヒンジと第２ヒンジは同板厚とさ
れており、第１ヒンジの溝部の全長が第２ヒンジの溝部
の全長より長いことを特徴とする。[0013] According to a third aspect of the invention, according to claim 1, 2
In the vehicle interior member having an airbag door section according to any one of the claims, the first hinge and the second hinge have the same plate thickness, and the total length of the groove portion of the first hinge is the total length of the groove portion of the second hinge. Characterized by being longer.
【００１４】従って、請求項１、２の何れか１項に記載
の内容に加えて、第１ヒンジの溝部の全長が第２ヒンジ
の溝部の全長より長いため、確実に第１ヒンジ、第２ヒ
ンジの順に折れ曲がる。Therefore, in addition to the contents described in any one of claims 1 and 2, since the total length of the groove portion of the first hinge is longer than the total length of the groove portion of the second hinge, the first hinge and the second hinge can be securely connected. Bend in the order of the hinges.
【００１５】請求項４記載の本発明は、請求項１、２の
何れか１項に記載のエアバッグドア部を有する車両用内
装部材において、第１ヒンジの溝部の板厚Ｔ１が第２ヒ
ンジの溝部の板厚Ｔ２より厚く、且つ板厚Ｔ１、板厚Ｔ
２、第１ヒンジの溝部の全長Ｓ１及び第２ヒンジの溝部
の全長Ｓ２の関係を、Ｓ１（Ｔ２）3 ＞Ｓ２（Ｔ１）3
に設定したことを特徴とする。The present invention according to claim 4 is the same as that of claims 1 and 2.
In the vehicle interior member having the airbag door section according to any one of the items, the plate thickness T1 of the groove portion of the first hinge is thicker than the plate thickness T2 of the groove portion of the second hinge, and the plate thickness T1, T
2. The relationship between the total length S1 of the groove portion of the first hinge and the total length S2 of the groove portion of the second hinge is expressed as S1 (T2) 3 > S2 (T1) 3
It is characterized by being set to.
【００１６】従って、請求項１、２の何れか１項に記載
の内容に加えて、第１ヒンジの溝部の板厚Ｔ１が第２ヒ
ンジの溝部の板厚Ｔ２より厚い場合においても、確実に
第１ヒンジ、第２ヒンジの順に折れ曲がる。Therefore, in addition to the contents described in any one of claims 1 and 2, even when the plate thickness T1 of the groove portion of the first hinge is thicker than the plate thickness T2 of the groove portion of the second hinge, it is ensured. The first hinge and the second hinge are bent in this order.
【００１７】[0017]
【００１８】[0018]
【００１９】[0019]
【００２０】[0020]
【００２１】請求項５記載の本発明は、請求項１、２の
何れか１項に記載のエアバッグドア部を有する車両用内
装部材において、少なくとも第１ヒンジと第２ヒンジの
一部に、前記曲げポイントとなる溝を持たない薄肉部を
有することを特徴とする。The present invention according to claim 5 is the same as in claim 1 or 2.
The vehicle interior member having an airbag door portion according to any one of claims 1 to 4, characterized in that at least a part of the first hinge and the second hinge has a thin portion having no groove serving as the bending point. .
【００２２】従って、請求項１、２の何れか１項に記載
の内容に加えて、溝を持たない薄肉部によって、エアバ
ッグ袋体の膨張初期における剪断力による少なくとも第
１ヒンジ及び第２ヒンジの破損を防止できる。また、溝
を持たない薄肉部によって、第１ヒンジ及び第２ヒンジ
の各溝により射出成形時に板厚が絞られることによる樹
脂流動低下を防止できる。Therefore, in addition to the contents described in any one of claims 1 and 2, at least the first hinge and the second hinge due to the shearing force at the initial stage of inflation of the airbag bag due to the thin portion having no groove. Can be prevented from being damaged. Further, the thin portion having no groove can prevent the resin flow from decreasing due to the reduction of the plate thickness at the time of injection molding by the grooves of the first hinge and the second hinge.
【００２３】[0023]
【００２４】[0024]
【００２５】[0025]
【００２６】[0026]
【００２７】[0027]
【００２８】[0028]
【００２９】[0029]
【発明の実施の形態】本発明のエアバッグドア部を有す
る車両用内装部材の第１実施形態を図１〜図４に従って
説明する。BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of a vehicle interior member having an airbag door portion of the present invention will be described with reference to FIGS.
【００３０】なお、図中矢印ＦＲは車両前方方向を、矢
印ＵＰは車両上方方向を示す。In the figure, the arrow FR indicates the vehicle front direction, and the arrow UP indicates the vehicle upward direction.
【００３１】図１に示される如く、車両の車室内に設け
られている車両用内装部材としてのいインストルメント
パネル１０には、助手席側の内方にエアバッグ装置１２
が配設されている。このエアバッグ装置１２のエアバッ
グケース１４は、図示を省略したインストルメントパネ
ル・リインフォースメントに固定されており、エアバッ
グケース１４内には、インフレータ１６及び折り畳んだ
状態でエアバッグ袋体１８が収納されている。As shown in FIG. 1, an instrument panel 10 provided as an interior member for a vehicle, which is provided inside a vehicle compartment, has an airbag device 12 on the inner side of the passenger seat.
Is provided. An airbag case 14 of the airbag device 12 is fixed to an instrument panel / reinforcement (not shown), and an inflator 16 and an airbag bag body 18 in a folded state are stored in the airbag case 14. Has been done.
【００３２】また、インストルメントパネル１０のエア
バッグケース１４と略対向する部位はエアバッグドア部
２０となっており、インストルメントパネル１０のエア
バッグドア部２０以外の部位は本体部２２となってい
る。これらのエアバッグドア部２０と本体部２２は、硬
質樹脂としてのＴＳＯＰ［エラストマー（ゴム）とＰＰ
（ポリプロピレン）をブロイ化（相乗効果が期待できる
高分子多成分系材料を造る技術）し、さらにタルクを加
えて複合強化したもので、耐衝撃性と剛性を有し、流動
性が良く薄肉製品に適した低比重ＰＰ樹脂、例えば、曲
げ弾性率１５００〜３０００ＭPa］やＰＰ系樹脂、ＰＣ
／ＡＢＳ系樹脂、ＰＣ／ＡＥＳ系樹脂、ＰＣ／ＡＳＡ系
樹脂、ＰＣ／ＡＳｉＳ系樹脂、変性ＰＰＯ系樹脂、ＰＣ
／ＰＢＴ系樹脂、ＡＢＳ系樹脂、ＡＥＳ系樹脂、ＡＳＡ
系樹脂、ＡＳｉＳ系樹脂、ＰＣ系樹脂、ＡＳＧ系樹脂、
ＴＰＯ系樹脂、ＴＰＥ系樹脂、ＴＰＵ系樹脂、ＰＣ／変
性ＰＳ系樹脂等で構成されている。The portion of the instrument panel 10 that substantially faces the airbag case 14 is the airbag door portion 20, and the portion of the instrument panel 10 other than the airbag door portion 20 is the main body portion 22. There is. The airbag door portion 20 and the body portion 22 are made of TSOP [elastomer (rubber) and PP] as hard resin.
Brominated (polypropylene) (technology for producing polymeric multi-component materials that can be expected to have a synergistic effect), and further talc added for composite reinforcement, impact resistance and rigidity, good flowability, and thin wall product Low specific gravity PP resin, such as flexural modulus 1500-3000 MPa, PP resin, PC
/ ABS resin, PC / AES resin, PC / ASA resin, PC / ASiS resin, modified PPO resin, PC
/ PBT resin, ABS resin, AES resin, ASA
Resin, ASiS resin, PC resin, ASG resin,
It is composed of TPO resin, TPE resin, TPU resin, PC / modified PS resin, and the like.
【００３３】エアバッグ装置１２は、図示しない機械的
又は電気的な加速度センサ等によって車両の急減速を検
出すると、エアバッグケース１４内のインフレータ１６
が作動して、エアバッグケース１４内に折り畳まれて収
容されているエアバッグ袋体１８をインストルメントパ
ネル１０のエアバッグドア部２０へ向けて膨張させる。
エアバッグ袋体１８は、インストルメントパネル１０の
エアバッグドア部２０を押圧してエアバッグドア部２０
を開裂させ車室内に展開するようになっている。なお、
エアバッグ装置１２としては、従来公知の一般的構成を
適用できるため、本実施形態ではエアバッグ装置１２の
詳細な説明は省略する。When the airbag device 12 detects a sudden deceleration of the vehicle by a mechanical or electrical acceleration sensor (not shown) or the like, the inflator 16 in the airbag case 14 is detected.
Is activated to inflate the airbag bag body 18 folded and accommodated in the airbag case 14 toward the airbag door portion 20 of the instrument panel 10.
The airbag body 18 presses the airbag door portion 20 of the instrument panel 10 to press the airbag door portion 20.
It is designed to be cleaved and deployed in the passenger compartment. In addition,
As the airbag device 12, a conventionally known general configuration can be applied, and thus the detailed description of the airbag device 12 is omitted in the present embodiment.
【００３４】図４に示される如く、エアバッグドア部２
０の前後方向略中央部と左右方向両端部には、薄肉とさ
れたティア部２４が形成されている。このティア部２４
は、横方向ティアラインを構成する中央部２４Ａと、左
右一対の縦方向ティアラインを構成する両側部２４Ｂ、
２４Ｃからなる平面視でＨ形状とされており、エアバッ
グ袋体展開時にエアバッグドア部２０は前後に両開きし
てエアバッグ袋体が車室内に展開する構成となってい
る。As shown in FIG. 4, the airbag door portion 2
A thin tier portion 24 is formed at a substantially central portion in the front-rear direction of 0 and both end portions in the left-right direction. This tear part 24
Is a central portion 24A forming a horizontal tear line and both side portions 24B forming a pair of left and right vertical tear lines,
24C is H-shaped in a plan view, and when the airbag bag is deployed, the airbag door portion 20 is opened back and forth so that the airbag bag body is deployed in the passenger compartment.
【００３５】図２に示される如く、エアバッグドア部２
０のティア部２４の断面はＶ字状となっている。また、
エアバッグドア部２０には、ティア部２４の中央部２４
Ａを挟む車両前後方向両側の部位に突き上げ手段として
の突起２８、３０が下方へ向けて突出されており、これ
らの突起２８、３０は、エアバッグドア部２０と一体成
形されている。このため、エアバッグ袋体展開時には、
展開するエアバッグ袋体が、突起２８、３０の下面２８
Ａ、３０Ａに当接して、突起２８、３０を上方（図２の
矢印Ａ方向）に押圧するようになっている。As shown in FIG. 2, the airbag door portion 2
The section of the tear portion 24 of 0 is V-shaped. Also,
The airbag door portion 20 includes a central portion 24 of the tear portion 24.
Protrusions 28 and 30 as push-up means are projected downward on both sides of the vehicle A in the front-rear direction, and the protrusions 28 and 30 are integrally formed with the airbag door portion 20. Therefore, when deploying the airbag bag,
The airbag bag to be deployed is the lower surface 28 of the protrusions 28 and 30.
The protrusions 28, 30 are pressed upward (in the direction of arrow A in FIG. 2) by abutting against A, 30A.
【００３６】なお、図示を省略したが、突起２８、３０
は車両前後方向に延びる幅狭のリブと車幅方向に延びる
幅狭のリブとで格子状に形成されている。これらのリブ
の幅は、エアバッグドア部２０の肉厚の１／２以下に設
定されており、ヒケを防止するようになっている。突起
２８、３０の幅と長さは、図４に示すエアバッグドア部
２０の前方ドア部２０Ａと後方ドア部２０Ｂの各全幅Ｗ
と全長Ｌの５％〜２０％程度にそれぞれ設定されてい
る。このため、エアバッグドア部２０は、突起２８、３
０により幅方向、及び長さ方向への撓みが、極端に損な
われることがなく、エアバッグ袋体展開時にエアバッグ
ドア部２０が幅方向、及び長さ方向へ撓むことによっ
て、ティア部２４の中央部２４Ａから確実に開裂するよ
うになっている。Although not shown, the protrusions 28, 30
Are formed in a lattice shape with narrow ribs extending in the vehicle front-rear direction and narrow ribs extending in the vehicle width direction. The width of these ribs is set to ½ or less of the wall thickness of the airbag door portion 20 to prevent sink marks. The width and length of the protrusions 28 and 30 are the total width W of each of the front door portion 20A and the rear door portion 20B of the airbag door portion 20 shown in FIG.
And about 5% to 20% of the total length L, respectively. Therefore, the airbag door portion 20 has the protrusions 28, 3
With 0, the bending in the width direction and the length direction is not extremely impaired, and the airbag door portion 20 bends in the width direction and the length direction when the airbag bag is deployed, so that the tear portion 24 The central portion 24A is surely cleaved.
【００３７】図２に示される如く、前方ドア部２０Ａの
ティア部２４側には第１ヒンジ２５が形成されている。
この第１ヒンジ２５は所定の前後幅Ｗ１にわたって所定
板厚の薄肉部として形成され、且つ薄肉部の前後幅の中
間に曲げポイントとなる溝２５Ａが設定されており、溝
２５Ａの板厚Ｔ１は、前方ドア部２０Ａの一般部の板厚
Ｔより薄肉とされている。なお、溝２５Ａの両端はティ
ア部２４の両側部２４Ｂ、２４Ｃ（図４参照）の前端に
接続もしくはその近傍まで達している。As shown in FIG. 2, a first hinge 25 is formed on the front door portion 20A on the side of the tear portion 24.
The first hinge 25 is formed as a thin portion having a predetermined plate thickness over a predetermined front-rear width W1, and a groove 25A serving as a bending point is set in the middle of the front-rear width of the thin part, and the plate thickness T1 of the groove 25A is The thickness is thinner than the plate thickness T of the general portion of the front door portion 20A. Both ends of the groove 25A are connected to or reach the front ends of both side portions 24B and 24C (see FIG. 4) of the tear portion 24.
【００３８】また、前方ドア部２０Ａのエアバッグケー
ス取付部側には第２ヒンジ２６が第１ヒンジ２５と略平
行に形成されている。この第２ヒンジ２６は、所定の前
後幅Ｗ２にわたって所定板厚の薄肉部として形成され、
且つ薄肉部の前後幅の中間に曲げポイントとなる溝２６
Ａが設定されており、第１ヒンジ２５の溝２５Ａが形成
された部位の板厚Ｔ１は、第２ヒンジ２６の溝２６Ａが
形成された部位の板厚Ｔ２より薄肉（Ｔ１＜Ｔ２）とさ
れている。なお、溝２６Ａの両端はティア部２４の両側
部２４Ｂ、２４Ｃ（図４参照）に接続されている。A second hinge 26 is formed substantially parallel to the first hinge 25 on the airbag case mounting portion side of the front door portion 20A. The second hinge 26 is formed as a thin portion having a predetermined plate thickness over a predetermined front-rear width W2,
In addition, a groove 26 serving as a bending point is formed in the middle of the front-rear width of the thin portion.
A is set, and the plate thickness T1 of the portion of the first hinge 25 where the groove 25A is formed is thinner than the plate thickness T2 of the portion of the second hinge 26 where the groove 26A is formed (T1 <T2). ing. Both ends of the groove 26A are connected to both side portions 24B and 24C (see FIG. 4) of the tear portion 24.
【００３９】また、溝２５Ａと溝２６Ａとの間の距離
は、所定の距離Ｌ１−Ｌ２に設定されており、図３に示
される如く、第１ヒンジ２５と第２ヒンジ２６との双方
の開き角θ１、θ２が９０°〜１２０°に開いた状態を
維持できるようになっている。なお、後方ドア部２０Ｂ
にも同様に第１ヒンジ２５及び第２ヒンジ２６が形成さ
れている。Further, the distance between the groove 25A and the groove 26A is set to a predetermined distance L1-L2, and as shown in FIG. 3, both the first hinge 25 and the second hinge 26 are opened. The angles θ1 and θ2 can be kept open at 90 ° to 120 °. The rear door portion 20B
Similarly, a first hinge 25 and a second hinge 26 are also formed.
【００４０】従って、エアバッグドア部２０は、エアバ
ッグ展開時、膨張するエアバッグ袋体１８によって押圧
されると、ティア部２４に沿って開裂し、開裂した前方
ドア部２０Ａと後方ドア部２０Ｂとが、第１ヒンジ２５
及び第２ヒンジ２６を中心に回動して、エアバッグ袋体
１８を車室内へ展開可能とする開口が形成されるように
なっている。この際、第１ヒンジ２５の溝２５Ａが形成
された部位の板厚Ｔ１が、第２ヒンジ２６の溝２６Ａが
形成された部位の板厚Ｔ２より薄肉（Ｔ１＜Ｔ２）とさ
れているため、第１ヒンジ２５に続いて第２ヒンジ２６
が折れ曲がりを開始するようになっている。Therefore, when the airbag door portion 20 is pressed by the inflating airbag bag body 18 when the airbag is deployed, the airbag door portion 20 is split along the tear portion 24, and the split front door portion 20A and the rear door portion 20B are split. Is the first hinge 25
Also, an opening that allows the airbag bag 18 to be deployed into the vehicle compartment is formed by rotating around the second hinge 26. At this time, since the plate thickness T1 of the portion where the groove 25A of the first hinge 25 is formed is thinner than the plate thickness T2 of the portion where the groove 26A of the second hinge 26 is formed (T1 <T2), The second hinge 26 following the first hinge 25
Has begun to bend.
【００４１】次に、本発明の第１実施形態の作用を説明
する。Next, the operation of the first embodiment of the present invention will be described.
【００４２】本実施形態では、エアバッグ袋体展開時
に、展開するエアバッグ袋体１８が、突起２８、３０の
下面２８Ａ、３０Ａに当接して、突起２８、３０を上方
（図２の矢印Ａ方向）押圧する。このため、エアバッグ
袋体１８から瞬間的に衝撃荷重が突起２８、３０に作用
し、ティア部２４の中央部２４Ａからスムーズに開裂す
る。In this embodiment, when the air bag body is inflated, the air bag body 18 to be deployed abuts the lower surfaces 28A and 30A of the projections 28 and 30 to move the projections 28 and 30 upward (arrow A in FIG. 2). Direction) Press. Therefore, an impact load is momentarily applied from the airbag bag 18 to the protrusions 28 and 30, and the tear is smoothly split from the central portion 24A of the tear portion 24.
【００４３】この際、本実施形態では、図３に示される
如く、エアバッグ袋体展開時に、エアバッグドア部２０
の前方のドア部２０Ａと後方のドア部２０Ｂとが、それ
ぞれ第１ヒンジ２５と第２ヒンジ２６にて２段階に折れ
曲がりながら開く。また、本実施形態では、第１ヒンジ
２５と第２ヒンジ２６との曲げポイントに溝２５Ａ、２
６Ａを形成し、第１ヒンジ２５の溝２５Ａが形成された
部位の板厚Ｔ１を、第２ヒンジ２６の溝２６Ａが形成さ
れた部位の板厚Ｔ２より薄肉（Ｔ１＜Ｔ２）としたた
め、第１ヒンジ２５に続いて第２ヒンジ２６が折れ曲が
りを開始する。この結果、エアバッグドア部２０の前方
のドア部２０Ａと後方のドア部２０Ｂとの開き度合を維
持しながら、曲げ部分Ｓ１、Ｓ２の局部的な伸びを低減
できる。At this time, in this embodiment, as shown in FIG. 3, when the airbag bag is deployed, the airbag door portion 20 is opened.
The front door portion 20A and the rear door portion 20B are opened while being bent in two steps by the first hinge 25 and the second hinge 26, respectively. Further, in the present embodiment, the grooves 25A, 2A are formed at the bending points of the first hinge 25 and the second hinge 26.
6A is formed, and the plate thickness T1 of the portion where the groove 25A of the first hinge 25 is formed is thinner than the plate thickness T2 of the portion where the groove 26A of the second hinge 26 is formed (T1 <T2). Following the first hinge 25, the second hinge 26 starts to bend. As a result, the local extension of the bent portions S1 and S2 can be reduced while maintaining the opening degree between the front door portion 20A and the rear door portion 20B of the airbag door portion 20.
【００４４】また、本実施形態では、第１ヒンジ２５と
第２ヒンジ２６との曲げポイントに溝２５Ａ、２６Ａを
形成したため、曲げ部分Ｓ１、Ｓ２の表面展開長をかせ
ぎ、基材の実質伸び率を小さくできる。Further, in this embodiment, since the grooves 25A and 26A are formed at the bending points of the first hinge 25 and the second hinge 26, the surface development length of the bent portions S1 and S2 is reduced, and the substantial elongation of the base material is increased. Can be made smaller.
【００４５】従って、エアバッグドア部２０の前方のド
ア部２０Ａと後方のドア部２０Ｂの曲げ開き時に生じ易
い、曲げ部分Ｓ１、Ｓ２の破損を防止できる。また、ヒ
ンジ部の破損を防止するため、従来使用していた補強部
材が不要となり、コストダウン及び軽量化が可能にな
る。Therefore, it is possible to prevent the bent portions S1 and S2 from being damaged, which is likely to occur when the front door portion 20A and the rear door portion 20B of the airbag door portion 20 are bent and opened. Further, since the hinge portion is prevented from being damaged, the conventionally used reinforcing member is not required, which enables cost reduction and weight reduction.
【００４６】また、本実施形態では、第１ヒンジ２５の
溝２５Ａ及び第２ヒンジ２６の溝２６Ａの各両端部がそ
れぞれティア部２４の両側部２４Ｂ、２４Ｃ（図４参
照）に接続もしくはその近傍まで達しているため、ティ
ア部２４の両側部２４Ｂ、２４Ｃの開裂進行に伴って、
確実に第１ヒンジ２５から先に曲げ開かれる。Further, in this embodiment, both ends of the groove 25A of the first hinge 25 and the groove 26A of the second hinge 26 are connected to the side portions 24B and 24C of the tear portion 24 (see FIG. 4) or in the vicinity thereof. Since it has reached to, as the tearing progresses on both sides 24B and 24C of the tear portion 24,
The first hinge 25 is surely bent and opened first.
【００４７】また、本実施形態では、突起２８、３０に
より、ティア部２４の板厚が厚くても容易に開裂させる
ことができるため、展開性能と外観品質（インビジブル
化）との両立を図ることが可能である。また、エアバッ
グドア部２０を剛性の高い硬質材料で構成できるので、
べこつき感や変形も防止できる。Further, in the present embodiment, the protrusions 28 and 30 can easily tear the tear portion 24 even if the plate thickness of the tear portion 24 is large, so that the expansion performance and the appearance quality (invisible) can be achieved at the same time. Is possible. Further, since the airbag door portion 20 can be made of a hard material having high rigidity,
It can prevent stickiness and deformation.
【００４８】なお、本実施形態では、図４に示される如
く、ティア部２４を平面視でＨ形状に形成したが、ティ
ア部２４の形状はこれに限定されず、例えば、コ字状等
の他の形状でも良い。In this embodiment, as shown in FIG. 4, the tear portion 24 is formed in an H shape in plan view, but the shape of the tear portion 24 is not limited to this, and for example, a U-shape or the like can be used. Other shapes may be used.
【００４９】また、本実施形態では、第１ヒンジ２５の
溝２５Ａ及び第２ヒンジ２６の溝２６Ａの各両端部が、
それぞれティア部２４の両側部２４Ｂ、２４Ｃ（図４参
照）に接続もしくはその近傍まで達しているがこれに代
えて、図５に示される如く、第１ヒンジ２５及び第２ヒ
ンジ２６の一部に曲げポイントとなる溝２５Ａ、２６Ａ
を持たない薄肉部４０を有する構成としても良い。この
構成とした場合には、薄肉部４０によって、エアバッグ
袋体の膨張初期における剪断力による第１ヒンジ２５及
び第２ヒンジ２６の破損を防止できる。また、薄肉部４
０によって、２列となった第１ヒンジ２５の溝２５Ａと
第２ヒンジ２６の溝２６Ａにより射出成形時に板厚が絞
られることによる樹脂流動低下を防止できる。Further, in this embodiment, both ends of the groove 25A of the first hinge 25 and the groove 26A of the second hinge 26 are
They are connected to or reach the sides 24B and 24C (see FIG. 4) of the tear portion 24, respectively, but instead of this, as shown in FIG. 5, a part of the first hinge 25 and the second hinge 26 is provided. Grooves 25A and 26A that serve as bending points
A configuration may be adopted in which the thin-walled portion 40 that does not have the With this configuration, the thin portion 40 can prevent the first hinge 25 and the second hinge 26 from being damaged by the shearing force in the initial stage of inflation of the airbag body. Also, the thin portion 4
With 0, the groove 25A of the first hinge 25 and the groove 26A of the second hinge 26, which are arranged in two rows, can prevent the resin flow from being lowered due to the reduction of the plate thickness during the injection molding.
【００５０】次に、本発明のエアバッグドア部を有する
車両用内装部材の第２実施形態を図６に従って説明す
る。Next, a second embodiment of the vehicle interior member having the airbag door portion of the present invention will be described with reference to FIG.
【００５１】なお、第１実施形態と同一部材については
同一符号を付してその説明を省略する。The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００５２】図６に示される如く、本実施形態では、イ
ンストルメントパネル１０におけるエアバッグドア部２
０の基材と、本体部２２の基材とが同一の硬質樹脂材料
で一体成形されており、この一体成形された基材４２の
表面（意匠面）には、インサート成形または貼り込み成
形より例えば、ＰＶＣ、ＴＰＯ、ファブリック等から成
る表皮４４が配設されている。As shown in FIG. 6, in this embodiment, the airbag door portion 2 of the instrument panel 10 is used.
The base material of No. 0 and the base material of the main body 22 are integrally formed of the same hard resin material, and the surface (design surface) of the integrally formed base material 42 is formed by insert molding or paste molding. For example, a skin 44 made of PVC, TPO, fabric or the like is provided.
【００５３】なお、表皮４４の裏面（基材）側、或いは
表面側には、基材４２のティア部２４に沿って、例え
ば、薄肉加工されたティア部４６が形成されており、表
皮４４は基材４２の表面（意匠面）を覆っている。A thin-walled tear portion 46 is formed along the tear portion 24 of the base material 42 on the back surface (base material) side or front surface side of the skin 44. It covers the surface (design surface) of the base material 42.
【００５４】従って、本実施形態では、エアバッグ袋体
展開時に、第１実施形態と同様に基材４２がティア部２
４に沿って開裂すると共に、表皮４４もティア部４６か
ら開裂し、第１実施形態と同様な効果が得られる。Therefore, in this embodiment, when the air bag body is deployed, the base material 42 is moved to the tear portion 2 as in the first embodiment.
4, the epidermis 44 is also cleaved from the tear portion 46, and the same effect as that of the first embodiment can be obtained.
【００５５】なお、表皮インサート成形の場合、図７
（Ａ）に示される単層の表皮４４以外に、図７（Ｂ）に
示される２層（表皮単層＋発泡層）の表皮４４、図７
（Ｃ）に示される３層（表皮単層＋発泡層＋裏地層）の
表皮４４を使用しても良い。In the case of skin insert molding, FIG.
In addition to the single-layer skin 44 shown in (A), a two-layer (single skin single layer + foamed layer) skin 44 shown in FIG. 7B, FIG.
It is also possible to use the three-layered skin 44 (single skin + foam layer + lining layer) shown in (C).
【００５６】また、貼り込み成形の場合、図８（Ａ）に
示される単層の表皮４４以外に、図８（Ｂ）に示される
フォーム層４８付きの表皮４４を使用しても良い。In addition, in the case of the paste molding, in addition to the single layer skin 44 shown in FIG. 8A, the skin 44 with the foam layer 48 shown in FIG. 8B may be used.
【００５７】次に、本発明のエアバッグドア部を有する
車両用内装部材の第３実施形態を図９に従って説明す
る。Next, a third embodiment of the vehicle interior member having the airbag door portion of the present invention will be described with reference to FIG.
【００５８】なお、第２実施形態と同一部材については
同一符号を付してその説明を省略する。The same members as those in the second embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００５９】図９に示される如く、本第３実施形態で
は、基材４２と表皮４４との間に、例えば、ウレタンフ
ォームから成る発泡層５０が一体発泡されている。As shown in FIG. 9, in the third embodiment, a foam layer 50 made of, for example, urethane foam is integrally foamed between the base material 42 and the skin 44.
【００６０】従って、本実施形態では、エアバッグ袋体
展開時に、第１実施形態と同様に基材４２がティア部２
４の中央部２４Ａから開裂すると共に、発泡層５０と表
皮４４も開裂し、第１実施形態と同様な効果が得られ
る。Therefore, in this embodiment, when the airbag bag is deployed, the base material 42 is moved to the tear portion 2 as in the first embodiment.
4, the foam layer 50 and the skin 44 are also cleaved from the central portion 24A, and the same effect as that of the first embodiment is obtained.
【００６１】なお、前記第１〜第３実施形態では、第１
ヒンジ２５と第２ヒンジ２６との２つのヒンジを形成し
たが、第２ヒンジ２６に続いて順次折れ曲がる第３ヒン
ジ以降の複数のヒンジを設けた構成としても良い。In the first to third embodiments, the first
Although two hinges, that is, the hinge 25 and the second hinge 26, are formed, the second hinge 26 may be provided with a plurality of hinges after the third hinge that are sequentially bent.
【００６２】次に、本発明のエアバッグドア部を有する
車両用内装部材の第４実施形態を図１０〜図１３に従っ
て説明する。Next, a fourth embodiment of the vehicle interior member having the airbag door portion of the present invention will be described with reference to FIGS.
【００６３】なお、第１実施形態と同一部材については
同一符号を付してその説明を省略する。The same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００６４】図１２に示される如く、本実施形態では、
ティア部２４が形成された左右一対の縦方向ティアライ
ンを構成する両側部２４Ｂ、２４Ｃの前後両端部間にそ
れぞれ薄肉とされたヒンジ部５２が形成されており、テ
ィア部２４の両側部２４Ｂ、２４Ｃの前後両端部には、
それぞれ平面視で矩形状の肉厚急変部５４が形成されて
いる。また、ティア部２４の両側部２４Ｂ、２４Ｃの各
ドア部外側には、両側部２４Ｂ、２４Ｃに沿って全周に
リブ５６が配設されている。As shown in FIG. 12, in the present embodiment,
Thinned hinge portions 52 are formed between the front and rear end portions of both side portions 24B and 24C that form a pair of left and right vertical tear lines on which the tear portion 24 is formed, and both side portions 24B of the tear portion 24, At both front and rear ends of 24C,
In each of the plan views, a rectangular wall thickness sudden change portion 54 is formed. Further, ribs 56 are provided on the outer sides of the door portions of the side portions 24B and 24C of the tear portion 24 along the entire sides along the side portions 24B and 24C.
【００６５】図１１に示される如く、リブ５６はエアバ
ッグドア部２０の裏面側に突出しており、本体部２２の
エアバッグドア周辺部を補強することでエアバッグドア
部２０の変形等を防止している。As shown in FIG. 11, the rib 56 projects to the back side of the airbag door portion 20 and prevents the deformation of the airbag door portion 20 by reinforcing the periphery of the airbag door of the main body portion 22. is doing.
【００６６】図１０に示される如く、肉厚急変部５４
は、ティア部２４の側部２４Ｃの板厚Ｎ１と同じ板厚Ｎ
１とされた薄肉部５４Ａと、ティア部２４の側部２４Ｃ
の板厚Ｎ１よりも厚い板厚Ｎ２とされた厚肉部５４Ｂ
と、を縦壁部５４Ｃで連結した構成となっている。な
お、肉厚急変部５４は、ティア部２４の側部２４Ｂにお
いても、同様になっている。As shown in FIG. 10, the sudden change in wall thickness 54
Is the same plate thickness N as the plate thickness N1 of the side portion 24C of the tear portion 24.
The thin portion 54A defined as 1 and the side portion 24C of the tear portion 24
Thick portion 54B having a plate thickness N2 larger than the plate thickness N1 of
And are connected by a vertical wall portion 54C. Note that the sudden change in wall thickness 54 is the same in the side portion 24B of the tear portion 24 as well.
【００６７】従って、本実施形態では、エアバッグドア
部２０が展開する際に、ティア部２４の両側部２４Ｂ、
２４Ｃの前後両端部に形成された肉厚急変部５４の縦壁
部５４Ｃにおいて、ティア部２４の両側部２４Ｂ、２４
Ｃの開裂が停止する。この結果、ティア部２４の両側部
２４Ｂ、２４Ｃの開裂による亀裂の進展がエアバッグド
ア部２０におけるヒンジ部５２等に至るのを効果的に阻
止できるため、ヒンジ部５２の破損を防止できる。Therefore, in this embodiment, when the airbag door portion 20 is deployed, both side portions 24B of the tear portion 24,
In the vertical wall portion 54C of the wall thickness sudden change portion 54 formed at the front and rear end portions of the 24C, both side portions 24B, 24 of the tear portion 24 are formed.
Cleavage stops. As a result, it is possible to effectively prevent the development of cracks due to the splitting of both side portions 24B and 24C of the tear portion 24 from reaching the hinge portion 52 and the like in the airbag door portion 20, so that the hinge portion 52 can be prevented from being damaged.
【００６８】次に、本発明のエアバッグドア部を有する
車両用内装部材の第５実施形態を図１３及び図１４に従
って説明する。Next, a fifth embodiment of a vehicle interior member having an airbag door portion of the present invention will be described with reference to FIGS. 13 and 14.
【００６９】なお、第４実施形態と同一部材については
同一符号を付してその説明を省略する。The same members as those in the fourth embodiment are designated by the same reference numerals and the description thereof will be omitted.
【００７０】図１４に示される如く、本実施形態では、
肉厚急変部５４がティア部２４の側部２４Ｃより深く、
断面矩形状に形成されている。As shown in FIG. 14, in this embodiment,
The thickness sudden change portion 54 is deeper than the side portion 24C of the tear portion 24,
It has a rectangular cross section.
【００７１】図１３に示される如く、肉厚急変部５４
は、ティア部２４の側部２４Ｃの板厚Ｎ１より薄くされ
た板厚Ｎ３の薄肉部５４Ａと、この薄肉部５４Ａとティ
ア部２４の側部２４Ｃとを連結する第１の縦壁部５４Ｂ
と、ティア部２４の側部２４Ｃの板厚Ｎ１より厚くされ
た板厚Ｎ４の厚肉部５４Ｃと、薄肉部５４Ａと厚肉部５
４Ｃと連結する第２の縦壁部５４Ｄとで構成されてい
る。なお、肉厚急変部５４は、ティア部２４の側部２４
Ｂにおいても、同様になっている。As shown in FIG. 13, the sudden change in wall thickness 54
Is a thin wall portion 54A having a plate thickness N3 that is thinner than the plate thickness N1 of the side portion 24C of the tear portion 24, and a first vertical wall portion 54B connecting the thin wall portion 54A and the side portion 24C of the tear portion 24.
And a thick portion 54C having a plate thickness N4 thicker than the plate thickness N1 of the side portion 24C of the tear portion 24, a thin wall portion 54A and a thick wall portion 5
4C and the 2nd vertical wall part 54D connected. The sudden change in wall thickness 54 corresponds to the side portion 24 of the tear portion 24.
The same applies to B.
【００７２】従って、本実施形態では、エアバッグドア
部２０の一般板厚Ｎ５より薄い板厚Ｎ４（Ｎ４＜Ｎ５）
内で、肉厚急変部５４を設定できる。この結果、エアバ
ッグドア部２０の一般板厚Ｎ５を厚くすることなく、テ
ィアライン端部の板厚差を大きく設定できるので、肉厚
急変部５４の縦壁部５４Ｄにおいて、ティア部２４の両
側部２４Ｂ、２４Ｃの開裂が停止する。この結果、ティ
ア部２４の両側部２４Ｂ、２４Ｃの開裂による亀裂の進
展がエアバッグドア部２０におけるヒンジ部５２等に至
るのを効果的に阻止できるため、ヒンジ部５２の破損を
防止できる。Therefore, in this embodiment, the plate thickness N4 (N4 <N5) is thinner than the general plate thickness N5 of the airbag door portion 20.
Inside, the sudden change in wall thickness 54 can be set. As a result, the plate thickness difference at the tear line end can be set large without increasing the general plate thickness N5 of the airbag door portion 20, so that the vertical wall portion 54D of the wall thickness sudden change portion 54 has both sides of the tear portion 24. The cleavage of the parts 24B and 24C stops. As a result, it is possible to effectively prevent the development of cracks due to the splitting of both side portions 24B and 24C of the tear portion 24 from reaching the hinge portion 52 and the like in the airbag door portion 20, so that the hinge portion 52 can be prevented from being damaged.
【００７３】なお、第４及び第５実施形態では、図１２
に示される如く、ティア部２４の両側部２４Ｂ、２４Ｃ
の両端部に肉厚急変部５４を形成したが、これに代え
て、図１５（Ａ）に示される如く、ティア部２４の両側
部２４Ｂ、２４Ｃの前後両端部に互いに接近する方向へ
屈曲した枝部２４Ｄを形成し、これらの枝部２４Ｄの先
端に肉厚急変部５４を形成しても良い。この場合には、
枝部２４Ｄを形成したことで、エアバッグドア部２０の
ヒンジ部における折れ曲がりが容易になり、開き角が大
きくなる。従って、図１５（Ｂ）に示される如く、特
に、乗員側に開く、エアバッグドア部２０の後方のドア
部２０Ｂにおいて、枝部２４Ｄを形成することが好まし
い。Incidentally, in the fourth and fifth embodiments, FIG.
As shown in, both side portions 24B and 24C of the tear portion 24 are
The thickness sudden change portions 54 were formed at both ends of the tear portion 24, but instead of this, as shown in FIG. 15 (A), the two end portions 24B, 24C of the tear portion 24 were bent in the directions approaching each other. The branch portions 24D may be formed, and the sudden change in wall thickness 54 may be formed at the tips of the branch portions 24D. In this case,
By forming the branch portion 24D, bending of the hinge portion of the airbag door portion 20 is facilitated and the opening angle is increased. Therefore, as shown in FIG. 15 (B), it is particularly preferable to form the branch portion 24D in the door portion 20B behind the airbag door portion 20 that opens to the occupant side.
【００７４】また、第４及び第５実施形態では、図４に
示される如く、ティア部２４をＨ形状としたが、これに
代えて、図１５（Ｃ）に示される如く、ティア部２４を
コ字形状とし、両側部２４Ｂ、２４Ｃの端部に肉厚急変
部５４を形成した構成としても良い。また、図１５
（Ｄ）に示される如く、ティア部２４の両側部２４Ｂ、
２４Ｃの前端部に互いに接近する方向へ屈曲した枝部２
４Ｄを形成し、これらの枝部２４Ｄの先端に肉厚急変部
５４を形成しても良い。Further, in the fourth and fifth embodiments, as shown in FIG. 4, the tear portion 24 has an H shape, but instead of this, as shown in FIG. The configuration may be U-shaped and the thickness sudden change portions 54 may be formed at the ends of the both side portions 24B and 24C. In addition, FIG.
As shown in (D), both side portions 24B of the tear portion 24,
Branch 2 that is bent toward the front end of 24C toward each other
4D may be formed, and the sudden change in wall thickness 54 may be formed at the tips of these branch portions 24D.
【００７５】また、第４及び第５実施形態における肉厚
急変部５４は、図６〜図８に示される様な、基材４２の
表面（意匠面）に表皮４４が配設されているインストル
メントパネル、または、図９に示される如く、基材４２
と表皮４４との間に発泡層５０が一体発泡されているイ
ンストルメントパネルにも適用可能である。Further, the thickness sudden change portion 54 in the fourth and fifth embodiments is an instrument in which the skin 44 is arranged on the surface (design surface) of the base material 42 as shown in FIGS. 6 to 8. Or a substrate 42, as shown in FIG.
It is also applicable to the instrument panel in which the foam layer 50 is integrally foamed between the outer skin 44 and the outer skin 44.
【００７６】また、図１６に示される如く、同板厚とさ
れた第１ヒンジ２５と第２ヒンジ２６において、第１ヒ
ンジ２５の溝部２５Ａの全長（Ｓ１＝Ｓ２＋Ｓ３＋Ｓ
４）が第２ヒンジ２６の溝部２６Ａの全長（Ｓ５＝Ｓ６
＋Ｓ７＋Ｓ８）より長く、設定することで、確実に第１
ヒンジ２５、第２ヒンジ２６の順に折れ曲がる構成とし
ても良い。さらに、第１ヒンジ２５の溝部２５Ａの板厚
Ｔ１が、第２ヒンジ２６の溝部２６Ａの板厚Ｔ２より厚
い場合には、板厚Ｔ１、板厚Ｔ２、第１ヒンジ２５の溝
部２５Ａの全長Ｓ１及び第２ヒンジ２６の溝部２６Ａの
全長Ｓ５の関係を、Ｓ１（Ｔ２）3 ＞Ｓ２（Ｔ１）3 に
設定することで、確実に第１ヒンジ２５、第２ヒンジ２
６の順に折れ曲がる構成としても良い。Further, as shown in FIG. 16, in the first hinge 25 and the second hinge 26 having the same plate thickness, the total length of the groove 25A of the first hinge 25 (S1 = S2 + S3 + S).
4) is the total length (S5 = S6) of the groove portion 26A of the second hinge 26.
+ S7 + S8) longer than the setting to ensure the first
The hinge 25 and the second hinge 26 may be bent in this order. Further, when the plate thickness T1 of the groove 25A of the first hinge 25 is thicker than the plate thickness T2 of the groove 26A of the second hinge 26, the plate thickness T1, the plate thickness T2, and the total length S1 of the groove 25A of the first hinge 25. By setting the relationship of the total length S5 of the groove portion 26A of the second hinge 26 to S1 (T2) 3 > S2 (T1) 3 , the first hinge 25 and the second hinge 2 can be reliably
The structure may be bent in the order of 6.
【００７７】以上に於いては、本発明を特定の実施形態
について詳細に説明したが、本発明はかかる実施形態に
限定されるものではなく、本発明の範囲内にて他の種々
の実施形態が可能であることは明らかである。例えば、
エアバッグ袋体展開時に第２ヒンジ２６に続いて順次折
れ曲がる第３ヒンジ、第４ヒンジ等の補助ヒンジを、エ
アバッグドア部２０における第２ヒンジ２６より取付部
側の部位に形成した構成としても良い。また、インスト
ルメントパネル１０のエアバッグドア部２０と本体部２
２とを別部材とした構成としても良い。また、ティア部
２４の断面形状は、Ｖ字形状の他にＵ字状等の他の形状
にしても良い。また、本発明のエアバッグドア部を有す
る車両用内装部材はインストルメントパネルの他にドア
トリム、センタピラーガーニッシュ、ハンドルパッド等
にも適用可能である。In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to such embodiments, and various other embodiments within the scope of the present invention. It is clear that is possible. For example,
It is also possible to form auxiliary hinges such as a third hinge and a fourth hinge, which are sequentially bent after the second hinge 26 when the airbag body is deployed, at a portion of the airbag door portion 20 closer to the attachment portion than the second hinge 26. good. Further, the airbag door portion 20 and the main body portion 2 of the instrument panel 10 are
It is also possible to adopt a configuration in which 2 is a separate member. Further, the cross-sectional shape of the tear portion 24 may be another shape such as a U shape in addition to the V shape. Further, the vehicle interior member having the airbag door portion of the present invention can be applied to a door trim, a center pillar garnish, a handle pad, etc. in addition to the instrument panel.
【００７８】[0078]
【発明の効果】請求項１記載の本発明は、本体部と同一
の硬質樹脂材料で一体成形または別体とされたエアバッ
グドア部を有する車両用内装部材であって、エアバッグ
ドア部に形成され、エアバッグ袋体展開時に開裂するテ
ィア部と、エアバッグドア部のティア部側に形成され、
エアバッグ袋体展開時に折れ曲がる第１ヒンジと、エア
バッグドア部のエアバッグケース取付部側に形成され、
エアバッグ袋体展開時に第１ヒンジに続いて折れ曲がる
第２ヒンジと、エアバッグドア部における、第２ヒンジ
よりエアバッグケース取付部側に形成され、エアバッグ
袋体展開時に第２ヒンジに続いて順次折れ曲がる複数の
補助ヒンジと、のうちの少なくとも前記第１ヒンジと第
２ヒンジとを有し、少なくとも第１ヒンジと第２ヒンジ
は、所定の前後幅にわたって所定板厚の薄肉部として形
成され、且つ該薄肉部の前後幅の中間に曲げポイントと
なる溝が設定されており、第１ヒンジの溝部の板厚が第
２ヒンジの溝部の板厚より薄いため、エアバッグドア部
展開時のヒンジ部の破損を防止できるという優れた効果
を有する。また、確実に第１ヒンジ、第２ヒンジの順に
折れ曲がるという優れた効果を有する。また、エアバッ
グ袋体展開時の曲げによるヒンジ部の破損を有効に防止
できるという優れた効果を有する。 The present invention according to claim 1 is an interior member for a vehicle having an air bag door portion integrally molded or made of the same hard resin material as the main body portion. It is formed and is formed on the tear part side of the airbag door part, and the tear part that splits when the airbag bag is deployed,
A first hinge that bends when the airbag body is deployed and formed on the airbag case attachment portion side of the airbag door portion,
A second hinge that bends following the first hinge when the airbag bag is deployed, and a second hinge that is formed on the airbag case attachment portion side of the airbag door portion that is next to the second hinge when the airbag bag is deployed. possess a plurality of auxiliary hinges sequentially bent, and at least the first hinge and the second hinge of the at least a first hinge and a second hinge
Is a thin-walled part with a specified plate thickness over the specified front-back width.
And a bending point in the middle of the front-back width of the thin portion
Is set, and the plate thickness of the groove part of the first hinge is
Since it is thinner than the plate thickness of the groove portion of the two hinges, it has an excellent effect that the hinge portion can be prevented from being damaged when the airbag door portion is deployed. Also, make sure that the first hinge and the second hinge are in this order.
It has an excellent effect of bending. Also, the air bag
Effectively prevents the hinge from being damaged due to bending when the bag is deployed
It has an excellent effect that it can be done.
【００７９】請求項２記載の本発明は、本体部と同一の
硬質樹脂材料で一体成形または別体とされた基材を有
し、基材の表面を、表皮または発泡層と表皮で覆ったエ
アバッグドア部を有する車両用内装部材であって、エア
バッグドア部に形成され、エアバッグ袋体展開時に開裂
するティア部と、エアバッグドア部のティア部側に形成
され、エアバッグ袋体展開時に折れ曲がる第１ヒンジ
と、エアバッグドア部のエアバッグケース取付部側に形
成され、エアバッグ袋体展開時に第１ヒンジに続いて折
れ曲がる第２ヒンジと、エアバッグドア部における、第
２ヒンジよりエアバッグケース取付部側に形成され、エ
アバッグ袋体展開時に第２ヒンジに続いて順次折れ曲が
る複数の補助ヒンジと、のうちの少なくとも前記第１ヒ
ンジと第２ヒンジとを有し、少なくとも第１ヒンジと第
２ヒンジは、所定の前後幅にわたって所定板厚の薄肉部
として形成され、且つ該薄肉部の前後幅の中間に曲げポ
イントとなる溝が設定されており、第１ヒンジの溝部の
板厚が第２ヒンジの溝部の板厚より薄いため、基材の表
面が、表皮または発泡層と表皮で覆われたエアバッグド
ア部を有する車両用内装部材において、エアバッグドア
部展開時のヒンジ部の破損を防止できるという優れた効
果を有する。また、確実に第１ヒンジ、第２ヒンジの順
に折れ曲がるという優れた効果を有する。また、エアバ
ッグ袋体展開時の曲げによるヒンジ部の破損を有効に防
止できるという優れた効果を有する。 The present invention according to claim 2 has a base material integrally molded or separated from the same hard resin material as the main body, and the surface of the base material is covered with a skin or a foam layer and a skin. An interior member for a vehicle having an airbag door portion, the tear portion being formed on the airbag door portion and cleaving when the airbag bag is deployed, and the airbag bag portion formed on the tear portion side of the airbag door portion. A first hinge that bends when deployed, a second hinge that is formed on the airbag case attachment portion side of the airbag door portion and that bends following the first hinge when the airbag body deploys, and a second hinge in the airbag door portion. At least the first hinge and the second hinge among a plurality of auxiliary hinges that are formed closer to the airbag case attachment portion and that are bent sequentially after the second hinge when the airbag body is deployed. And, at least a first hinge second
2Hinges are thin-walled parts with a specified plate thickness across a specified front-back width.
Formed in the middle of the front and rear width of the thin portion.
The groove to be the int is set, and the groove of the first hinge
Since the thickness of the base material is thinner than the thickness of the groove portion of the second hinge , the base material surface has a skin or a foam layer and an airbag door portion covered with the skin. It has an excellent effect that damage to the hinge portion can be prevented. Also, make sure that the first hinge and the second hinge are in order.
It has an excellent effect of bending. In addition,
Effectively prevents the hinge from being damaged due to bending when the bag body is deployed.
It has an excellent effect that it can be stopped.
【００８０】[0080]
【００８１】請求項３記載の本発明は、請求項１、２の
何れか１項に記載のエアバッグドア部を有する車両用内
装部材において、第１ヒンジと第２ヒンジは同板厚とさ
れており、第１ヒンジの溝部の全長が第２ヒンジの溝部
の全長より長いため、請求項１、２の何れか１項に記載
の効果に加えて、確実に第１ヒンジ、第２ヒンジの順に
折れ曲がるという優れた効果を有する。[0081] According to a third aspect of the invention, according to claim 1, 2
In the vehicle interior member having an airbag door section according to any one of the claims, the first hinge and the second hinge have the same plate thickness, and the total length of the groove portion of the first hinge is the total length of the groove portion of the second hinge. Since it is longer, in addition to the effect described in any one of claims 1 and 2, it has an excellent effect of surely bending in the order of the first hinge and the second hinge.
【００８２】請求項４記載の本発明は、請求項１、２の
何れか１項に記載のエアバッグドア部を有する車両用内
装部材において、第１ヒンジの溝部の板厚Ｔ１が第２ヒ
ンジの溝部の板厚Ｔ２より厚く、且つ板厚Ｔ１、板厚Ｔ
２、第１ヒンジの溝部の全長Ｓ１及び第２ヒンジの溝部
の全長Ｓ２の関係を、Ｓ１（Ｔ２）3 ＞Ｓ２（Ｔ１）3
に設定したため、請求項１、２の何れか１項に記載の効
果に加えて、確実に第１ヒンジ、第２ヒンジの順に折れ
曲がるという優れた効果を有する。The present invention according to claim 4 is based on claim 1 or claim 2.
In the vehicle interior member having the airbag door section according to any one of the items, the plate thickness T1 of the groove portion of the first hinge is thicker than the plate thickness T2 of the groove portion of the second hinge, and the plate thickness T1, T
2. The relationship between the total length S1 of the groove portion of the first hinge and the total length S2 of the groove portion of the second hinge is expressed as S1 (T2) 3 > S2 (T1) 3
Therefore , in addition to the effect according to any one of claims 1 and 2, it has an excellent effect that the first hinge and the second hinge are surely bent in this order.
【００８３】[0083]
【００８４】請求項５記載の本発明は、請求項１、２の
何れか１項に記載のエアバッグドア部を有する車両用内
装部材において、少なくとも第１ヒンジと第２ヒンジの
一部に、前記曲げポイントとなる溝を持たない薄肉部を
有するため、請求項１、２の何れか１項に記載の効果に
加えて、エアバッグ袋体の膨張初期における剪断力によ
るヒンジ破損を防止できるという優れた効果を有する。
また、樹脂流動低下を防止できるという優れた効果を有
する。The present invention according to claim 5 is the same as claim 1 or claim 2.
The vehicle interior member having the airbag door portion according to any one of claims 1 to 3, wherein at least a part of the first hinge and the second hinge has a thin portion having no groove serving as the bending point. In addition to the effect described in any one of 2), it has an excellent effect that the hinge damage due to the shearing force at the initial stage of inflation of the airbag bag can be prevented.
In addition, it has an excellent effect of preventing deterioration of resin flow.
【００８５】[0085]
【００８６】[0086]
【００８７】[0087]
【図面の簡単な説明】[Brief description of drawings]
【図１】図４の１−１線に沿った拡大断面図である。FIG. 1 is an enlarged cross-sectional view taken along line 1-1 of FIG.
【図２】本発明の第１実施形態に係るエアバッグドア部
を有する車両用内装部材の要部を示す拡大側断面図であ
る。FIG. 2 is an enlarged side sectional view showing a main part of a vehicle interior member having an airbag door section according to the first embodiment of the present invention.
【図３】本発明の第１実施形態に係るエアバッグドア部
を有する車両用内装部材の要部のエアバッグドア部展開
状態を示す拡大側断面図である。FIG. 3 is an enlarged side sectional view showing a developed state of an airbag door portion of a main part of a vehicle interior member having an airbag door portion according to the first embodiment of the present invention.
【図４】本発明の第１実施形態に係るエアバッグドア部
を有する車両用内装部材としてのインストルメントパネ
ルを示す車両斜め後方から見た斜視図である。FIG. 4 is a perspective view of an instrument panel as an interior member for a vehicle having an airbag door portion according to the first embodiment of the present invention, as viewed obliquely from the rear of the vehicle.
【図５】本発明の第１実施形態の変形例に係るエアバッ
グドア部を有する車両用内装部材のエアバッグドア部裏
面を示す平面図である。FIG. 5 is a plan view showing the back surface of the airbag door portion of the vehicle interior member having the airbag door portion according to the modified example of the first embodiment of the present invention.
【図６】本発明の第２実施形態に係るエアバッグドア部
を有する車両用内装部材の図１に対応する側断面図であ
る。FIG. 6 is a side sectional view corresponding to FIG. 1 of an interior member for a vehicle having an airbag door portion according to a second embodiment of the present invention.
【図７】（Ａ）〜（Ｃ）は本発明に係るエアバッグドア
部を有する車両用内装部材の表皮インサート成形による
表皮を示す断面図である。7 (A) to 7 (C) are cross-sectional views showing a skin formed by skin insert molding of a vehicle interior member having an airbag door portion according to the present invention.
【図８】（Ａ）及び（Ｂ）は本発明に係るエアバッグド
ア部を有する車両用内装部材の貼り込み成形による表皮
を示す断面図である。8 (A) and 8 (B) are cross-sectional views showing a skin of an interior member for a vehicle having an airbag door portion according to the present invention, which is formed by sticking and molding.
【図９】本発明の第３実施形態に係るエアバッグドア部
を有する車両用内装部材の図１に対応する側断面図であ
る。FIG. 9 is a side sectional view of an interior member for a vehicle having an airbag door portion according to a third embodiment of the present invention, which corresponds to FIG. 1.
【図１０】図１２の１０−１０線に沿った拡大断面図で
ある。10 is an enlarged cross-sectional view taken along line 10-10 of FIG.
【図１１】図１２の１１−１１線に沿った拡大断面図で
ある。11 is an enlarged cross-sectional view taken along line 11-11 of FIG.
【図１２】本発明の第４実施形態に係るエアバッグドア
部を有する車両用内装部材のエアバッグドア部裏面を示
す平面図である。FIG. 12 is a plan view showing a back surface of an airbag door portion of a vehicle interior member having an airbag door portion according to a fourth embodiment of the present invention.
【図１３】本発明の第５実施形態に係るエアバッグドア
部を有する車両用内装部材の図１０に対応する側断面図
である。FIG. 13 is a side sectional view of an interior member for a vehicle having an airbag door portion according to a fifth embodiment of the present invention, which corresponds to FIG. 10.
【図１４】本発明の第５実施形態に係るエアバッグドア
部を有する車両用内装部材の図１１に対応する側断面図
である。FIG. 14 is a side sectional view of an interior member for a vehicle having an airbag door portion according to a fifth embodiment of the present invention, which corresponds to FIG. 11.
【図１５】（Ａ）〜（Ｄ）は本発明の第４実施形態の変
形例に係るエアバッグドア部を有する車両用内装部材の
エアバッグドア部裏面におけるティア部と肉厚急変部の
位置関係を示す概略平面図である。15A to 15D are positions of a tear portion and a sudden thickness change portion on the back surface of an airbag door portion of a vehicle interior member having an airbag door portion according to a modification of the fourth embodiment of the present invention. It is a schematic plan view which shows a relationship.
【図１６】本発明の他の実施形態に係るエアバッグドア
部を有する車両用内装部材のエアバッグドア部裏面を示
す平面図である。FIG. 16 is a plan view showing a back surface of an airbag door portion of a vehicle interior member having an airbag door portion according to another embodiment of the present invention.
１０ インストルメントパネル（車両用内装部材） １２ エアバッグ装置 １６ インフレータ １８ エアバッグ袋体 ２０ インストルメントパネルのエアバッグドア部 ２０Ａ 前方ドア部 ２０Ｂ 後方ドア部 ２２ インストルメントパネルの本体部 ２４ ティア部 ２４Ａ ティア部の中央部（横方向ティアライン） ２４Ｂ ティア部の両側部（縦方向ティアライン） ２４Ｃ ティア部の両側部（縦方向ティアライン） ２５ 第１ヒンジ ２５Ａ 第１ヒンジの溝 ２６ 第２ヒンジ ２６Ａ 第２ヒンジの溝 ２８ 突起（突き上げ手段） ４０ 薄肉部 ４２ 基材 ４４ 表皮 ５０ 発泡層 ５４ 肉厚急変部 10 Instrument panel (vehicle interior material) 12 Airbag device 16 inflator 18 Airbag bag 20 Airbag door of instrument panel 20A front door 20B Rear door part 22 Instrument panel body 24 Tier Division 24A Central part of the tear part (horizontal direction tear line) 24B Both sides of the tear part (vertical direction tear line) 24C Both sides of the tear part (vertical direction tear line) 25 1st hinge 25A First hinge groove 26 Second Hinge 26A Second hinge groove 28 Protrusion (Push-up means) 40 Thin part 42 Base material 44 epidermis 50 foam layer 54 sudden change in wall thickness
フロントページの続き (56)参考文献 特開 平８−310330（ＪＰ，Ａ) 特開 平６−336145（ＪＰ，Ａ) 特開 平７−47900（ＪＰ，Ａ) 特開 平７−32964（ＪＰ，Ａ) 特開 平４−27638（ＪＰ，Ａ) 特開 平４−27637（ＪＰ，Ａ) 特開 平８−192666（ＪＰ，Ａ) 特開 平９−2188（ＪＰ，Ａ) 特開 平９−156448（ＪＰ，Ａ) 特開 平７−96811（ＪＰ，Ａ) 特開 平９−300400（ＪＰ，Ａ) 特開 平８−290749（ＪＰ，Ａ) 特開 平３−109149（ＪＰ，Ａ) 特開 平10−100839（ＪＰ，Ａ) 特開 平10−81186（ＪＰ，Ａ) 特開 平４−50056（ＪＰ，Ａ) 特開 平３−281457（ＪＰ，Ａ) 特開 平４−197849（ＪＰ，Ａ) 実開 平２−60652（ＪＰ，Ｕ) 実開 平１−83652（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B60R 21/20 B60K 37/00 Continuation of the front page (56) Reference JP-A-8-310330 (JP, A) JP-A-6-336145 (JP, A) JP-A-7-47900 (JP, A) JP-A-7-32964 (JP , A) JP 4-27638 (JP, A) JP 4-27637 (JP, A) JP 8-192666 (JP, A) JP 9-2188 (JP, A) JP 9-156448 (JP, A) JP 7-96811 (JP, A) JP 9-300400 (JP, A) JP 8-290749 (JP, A) JP 3-109149 (JP, A) JP 10-100839 (JP, A) JP 10-81186 (JP, A) JP 4-50056 (JP, A) JP 3-281457 (JP, A) JP 4 -197849 (JP, A) Actual Kaihei 2-60652 (JP, U) Actual Kaihei 1-83652 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) B60R 21/20 B60K 37/00
Claims (5)
または別体とされたエアバッグドア部を有する車両用内
装部材であって、 前記エアバッグドア部に形成され、エアバッグ袋体展開
時に開裂するティア部と、 前記エアバッグドア部のティア部側に形成され、エアバ
ッグ袋体展開時に折れ曲がる第１ヒンジと、 前記エアバッグドア部のエアバッグケース取付部側に形
成され、エアバッグ袋体展開時に前記第１ヒンジに続い
て折れ曲がる第２ヒンジと、 前記エアバッグドア部における、前記第２ヒンジよりエ
アバッグケース取付部側に形成され、エアバッグ袋体展
開時に前記第２ヒンジに続いて順次折れ曲がる複数の補
助ヒンジと、 のうちの少なくとも前記第１ヒンジと第２ヒンジとを有
し、少なくとも第１ヒンジと第２ヒンジは、所定の前後
幅にわたって所定板厚の薄肉部として形成され、且つ該
薄肉部の前後幅の中間に曲げポイントとなる溝が設定さ
れており、第１ヒンジの溝部の板厚が第２ヒンジの溝部
の板厚より薄いことを特徴とするエアバッグドア部を有
する車両用内装部材。1. An interior member for a vehicle, which has an airbag door portion integrally molded or made of the same hard resin material as that of the main body portion, the airbag door portion being formed on the airbag door portion. A tear portion that is sometimes cleaved, a first hinge that is formed on the tear portion side of the airbag door portion and that bends when the airbag bag is deployed, and an airbag case attachment portion side of the airbag door portion that is formed A second hinge that is bent after the first hinge when the bag body is deployed; and a second hinge that is formed on the airbag case attachment portion side of the airbag door portion with respect to the second hinge, and is provided to the second hinge when the airbag bag body is deployed. A plurality of auxiliary hinges that are bent in sequence, and at least the first hinge and the second hinge among
However, at least the first hinge and the second hinge have a predetermined front and rear
Is formed as a thin portion having a predetermined plate thickness over the width, and
A groove that serves as a bending point is set in the middle of the width of the thin wall.
And the thickness of the groove portion of the first hinge is equal to the groove portion of the second hinge.
A vehicle interior member having an airbag door portion, which is thinner than the plate thickness .
または別体とされた基材を有し、基材の表面を、表皮ま
たは発泡層と表皮で覆ったエアバッグドア部を有する車
両用内装部材であって、 前記エアバッグドア部に形成され、エアバッグ袋体展開
時に開裂するティア部と、 前記エアバッグドア部のティア部側に形成され、エアバ
ッグ袋体展開時に折れ曲がる第１ヒンジと、 前記エアバッグドア部のエアバッグケース取付部側に形
成され、エアバッグ袋体展開時に前記第１ヒンジに続い
て折れ曲がる第２ヒンジと、 前記エアバッグドア部における、前記第２ヒンジよりエ
アバッグケース取付部側に形成され、エアバッグ袋体展
開時に前記第２ヒンジに続いて順次折れ曲がる複数の補
助ヒンジと、 のうちの少なくとも前記第１ヒンジと第２ヒンジとを有
し、少なくとも第１ヒンジと第２ヒンジは、所定の前後
幅にわたって所定板厚の薄肉部として形成され、且つ該
薄肉部の前後幅の中間に曲げポイントとなる溝が設定さ
れており、第１ヒンジの溝部の板厚が第２ヒンジの溝部
の板厚より薄いことを特徴とするエアバッグドア部を有
する車両用内装部材。2. A vehicle having a base material integrally molded or separated from the same hard resin material as that of the main body, and having an airbag door portion in which the surface of the base material is covered with a skin or a foam layer and a skin. An interior member for a vehicle, the tear portion being formed on the airbag door portion and cleaving when the airbag bag body is deployed, and the tear portion formed on the tear portion side of the airbag door portion and being bent when the airbag bag body is deployed. A hinge; a second hinge that is formed on the airbag case attachment portion side of the airbag door portion and that bends following the first hinge when the airbag bag is deployed; and a second hinge in the airbag door portion that is greater than the second hinge. A plurality of auxiliary hinges which are formed on the side of the airbag case mounting portion and which are sequentially bent following the second hinge when the airbag body is deployed; and at least the first hinge and the second hinge. Have a di
However, at least the first hinge and the second hinge have a predetermined front and rear
Is formed as a thin portion having a predetermined plate thickness over the width, and
A groove that serves as a bending point is set in the middle of the width of the thin wall.
And the thickness of the groove portion of the first hinge is equal to the groove portion of the second hinge.
A vehicle interior member having an airbag door portion, which is thinner than the plate thickness .
ており、第１ヒンジの溝部の全長が第２ヒンジの溝部の
全長より長いことを特徴とする請求項１、２の何れか１
項に記載のエアバッグドア部を有する車両用内装部材。3. The first hinge and the second hinge have the same plate thickness.
The groove length of the first hinge is less than the groove length of the second hinge.
It is longer than the total length, and any one of claims 1 and 2 is characterized.
An interior member for a vehicle having an airbag door section according to item .
ジの溝部の板厚Ｔ２より厚く、且つ板厚Ｔ１、板厚Ｔ
２、第１ヒンジの溝部の全長Ｓ１及び第２ヒンジの溝部
の全長Ｓ２の関係を、Ｓ１（Ｔ２） 3 ＞Ｓ２（Ｔ１） 3
に設定したことを特徴とする請求項１、２の何れか１項
に記載のエアバッグドア部を有する車両用内装部材。4. The plate thickness T1 of the groove portion of the first hinge is the second hinge.
Thicker than the plate thickness T2 of the groove portion of J, plate thickness T1, plate thickness T
2, the total length S1 of the groove portion of the first hinge and the groove portion of the second hinge
Of the total length S2 of S1 (T2) 3 > S2 (T1) 3
3. The method according to claim 1, characterized in that
Vehicle interior member having an air bag door portion according to.
部に、前記曲げポイントとなる溝を持たない薄肉部を有
することを特徴とする請求項１、２の何れか１項に記載
のエアバッグドア部を有する車両用内装部材。5. At least one of the first hinge and the second hinge.
Part has a thin-walled part that does not have the groove that serves as the bending point.
The vehicle interior member having the airbag door section according to any one of claims 1 and 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11958598A JP3417295B2 (en) | 1998-04-28 | 1998-04-28 | Vehicle interior member having an airbag door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11958598A JP3417295B2 (en) | 1998-04-28 | 1998-04-28 | Vehicle interior member having an airbag door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11310100A JPH11310100A (en) | 1999-11-09 |
| JP3417295B2 true JP3417295B2 (en) | 2003-06-16 |
Family
ID=14765017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11958598A Expired - Fee Related JP3417295B2 (en) | 1998-04-28 | 1998-04-28 | Vehicle interior member having an airbag door |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3417295B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7182365B2 (en) | 2000-07-07 | 2007-02-27 | Toyoda Gosei Co., Ltd. | Air bag device for knee protection |
| EP1300300B1 (en) | 2000-07-07 | 2008-01-09 | Toyoda Gosei Co., Ltd. | Air bag device for knee protection |
| JP4838539B2 (en) * | 2005-05-31 | 2011-12-14 | 三光合成株式会社 | Airbag device for vehicle |
| JP2007015675A (en) * | 2005-06-08 | 2007-01-25 | Daicel Chem Ind Ltd | Gas generator for airbag |
| JP4936317B2 (en) * | 2006-09-29 | 2012-05-23 | 株式会社イノアックコーポレーション | Structure of hinge part of synthetic resin molded product |
-
1998
- 1998-04-28 JP JP11958598A patent/JP3417295B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11310100A (en) | 1999-11-09 |
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