JP4478829B2 - Airbag door - Google Patents

Airbag door Download PDF

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JP4478829B2
JP4478829B2 JP2004244410A JP2004244410A JP4478829B2 JP 4478829 B2 JP4478829 B2 JP 4478829B2 JP 2004244410 A JP2004244410 A JP 2004244410A JP 2004244410 A JP2004244410 A JP 2004244410A JP 4478829 B2 JP4478829 B2 JP 4478829B2
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airbag
cylindrical body
door
door panel
rectangular
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JP2006062420A (en
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大祐 堀
裕明 鈴木
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Inoac Corp
Suzuki Motor Corp
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Suzuki Motor Corp
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Description

本発明は、エアバッグドアに関し、更に詳細には、車両内装部材を構成する基材に配設された実質的に矩形状をなす筒体と、この筒体に開放可能に設けられたドアパネルとからなり、エアバッグ装置の作動によりエアバッグが膨張して前記ドアパネルを外方へ開放させ、前記筒体に開口したエアバッグ通過口を介して前記エアバッグを外方へ展開させるようにしたエアバッグドアに関するものである。   The present invention relates to an airbag door, and more specifically, a substantially rectangular cylinder disposed on a base material constituting a vehicle interior member, and a door panel provided on the cylinder so as to be openable. The airbag is inflated by the operation of the airbag device, the door panel is opened outward, and the airbag is deployed outward through the airbag passage opening opened in the cylindrical body. It relates to bag doors.

近年生産される殆どの乗用車には、対向車との衝突事故の発生時における乗員保護を図る装置の一つとして、運転席用のエアバッグ装置および助手席用のエアバッグ装置が標準的に装備されている。例えば図18および図19に例示するように、助手席用のエアバッグ装置20は、乗員室内の前方に組付けた車両内装部材であるインストルメントパネル10の内側に、乗員席から見えないよう格納した状態で搭載されている。このため、インストルメントパネル10を構成する合成樹脂製の基材12には、エアバッグ装置20のインフレータケース22に対応する位置に、このエアバッグ装置20の作動時に外方へ開放するエアバッグドアAD1が設けられている。   Most passenger cars produced in recent years are equipped with an air bag device for the driver's seat and an air bag device for the passenger's seat as one of the devices for protecting passengers in the event of a collision with an oncoming vehicle. Has been. For example, as illustrated in FIG. 18 and FIG. 19, the airbag device 20 for the passenger seat is stored inside the instrument panel 10 that is a vehicle interior member assembled in front of the passenger compartment so as not to be seen from the passenger seat. It is mounted in the state. For this reason, the synthetic resin base material 12 constituting the instrument panel 10 has an airbag door that is opened outward at the position corresponding to the inflator case 22 of the airbag device 20 when the airbag device 20 is operated. AD1 is provided.

前述したエアバッグドアAD1は、インストルメントパネル10を構成する基材12とエアバッグ装置20との間に配設された実質的に矩形状をなす筒体(以後「矩形状筒体」という)30に対して開放可能に設けられたドアパネル32からなり、例えばオレフィン系の熱可塑性エラストマ(TPO)等の靭性が高く柔軟性を有する樹脂素材から一体的に形成されたものである。このようなエアバッグドアAD1は、図19に例示した基材12、発泡体14および表皮材16からなる3層構造のインストルメントパネル10に配設する場合や、図示しない基材12および表皮材16からなる2層構造のインストルメントパネルに配設する場合は、該基材12に開設した開口設置部18へドアパネル32を臨ませた状態で取付けられ、開放前状態では表皮材16で被覆されてインストルメントパネル10の外部から視認されないようになっている。なお図示省略するが、前述したエアバッグドアAD1を、基材12から構成されて該基材12が露出した単層構造のインストルメントパネルに配設する場合には、該基材12の一部分として設けられている基材ドア部分の裏側にドアパネル32を接合した状態で取付けられ、これら基材ドア部分とドアパネル32とが一体的に外方へ開放するようになっている。   The airbag door AD1 described above is a substantially rectangular cylinder (hereinafter referred to as a "rectangular cylinder") disposed between the base member 12 constituting the instrument panel 10 and the airbag apparatus 20. The door panel 32 is provided so as to be openable to the door 30 and is integrally formed from a resin material having high toughness such as olefin-based thermoplastic elastomer (TPO). Such an air bag door AD1 is disposed in the instrument panel 10 having a three-layer structure including the base material 12, the foam 14 and the skin material 16 illustrated in FIG. 19, or the base material 12 and the skin material (not shown). 16 is installed with the door panel 32 facing the opening installation portion 18 established in the base material 12 and covered with the skin material 16 in the state before opening. Thus, the instrument panel 10 is not visually recognized from the outside. Although not shown in the drawings, when the airbag door AD1 described above is arranged on a single-layered instrument panel that is composed of the base material 12 and the base material 12 is exposed, as a part of the base material 12 The door panel 32 is attached to the back side of the provided base material door portion, and the base door portion and the door panel 32 are integrally opened to the outside.

ここで、図18および図19に例示したエアバッグドアAD1は、両Y字形の破断予定部34を延設することで4枚のドアパネル32(32A,32B,32C,32D)に分割される四方開きタイプであって、エアバッグ装置20の作動により膨張したエアバッグ24の押圧力を受けた各々のドアパネル32(32A,32B,32C,32D)は、応力が集中した破断予定部34が破断することで相互に分割された後、一側端縁に沿設したヒンジ部36を中心として前述した矩形状筒体30に支持された状態で外方へ開放するようになる(図20、図21)。なお前述した矩形状筒体30は、エアバッグ24の膨張方向を基準とした前端側である基材側が基材12に係止されていると共に、後端側であるエアバッグ装置側がエアバッグ装置20のインフレータケース22へ連結支持されており、エアバッグ24の強大な押圧力によるインストルメントパネル10の破損を防止したり、瞬時に開放する各ドアパネル32(32A,32B,32C,32D)を支持するべく機能するようになっている。このようなエアバッグドアに関連する技術は、例えば特許文献1に開示されている。
特開2002−220019号公報
Here, the airbag door AD1 illustrated in FIG. 18 and FIG. 19 is divided into four door panels 32 (32A, 32B, 32C, 32D) by extending both Y-shaped breakable portions 34. Each door panel 32 (32A, 32B, 32C, 32D), which is of the open type and receives the pressing force of the airbag 24 inflated by the operation of the airbag device 20, breaks the planned fracture portion 34 where stress is concentrated. After being separated from each other, the hinge portion 36 extending along the one side edge is opened to the outside while being supported by the rectangular cylinder 30 described above (FIGS. 20 and 21). ). The rectangular cylindrical body 30 described above has the base material side, which is the front end side based on the inflating direction of the air bag 24, locked to the base material 12, and the air bag device side that is the rear end side is the air bag apparatus. 20 inflator cases 22 are connected and supported to prevent damage to the instrument panel 10 due to the strong pressing force of the airbag 24 and to support each door panel 32 (32A, 32B, 32C, 32D) that opens instantaneously. It is supposed to function as much as possible. A technique related to such an airbag door is disclosed in Patent Document 1, for example.
Japanese Patent Laid-Open No. 2002-220019

ところで、前述した従来のエアバッグドアAD1では、矩形状筒体30の内側形状(内部空間形状)が矩形状を呈しているため、図19に例示したように、エアバッグ装置20の作動により上丸状に膨張を開始したエアバッグ24は、この内部空間全体に広がるように膨張し、ドアパネル32の裏側に接触しつつも、隙間がある4つの各内部隅角部38(38A,38B,38C,38D)の方向へ膨張するようになる。このためエアバッグ24は、破断しないヒンジ部36の近傍まで広がって各ドアパネル32の裏側全体を均等に押圧するようになり、破断する必要のある破断予定部34およびその近傍部分に対してエアバッグ24の押圧力が効果的に加わらなくなってしまうため、破断予定部34の破断に際して多くのエネルギーを必要とする。   Incidentally, in the above-described conventional airbag door AD1, since the inner shape (internal space shape) of the rectangular cylindrical body 30 is rectangular, the upper portion is activated by the operation of the airbag device 20 as illustrated in FIG. The airbag 24 that has started to expand in a circular shape is inflated so as to spread over the entire interior space, and is in contact with the back side of the door panel 32, but has four internal corner portions 38 (38A, 38B, 38C) that have gaps. , 38D). For this reason, the airbag 24 spreads to the vicinity of the hinge portion 36 that does not break, and presses the entire back side of each door panel 32 evenly. Since the pressing force of 24 is not applied effectively, a lot of energy is required when the planned fracture portion 34 is broken.

また各ドアパネル32は、エアバッグ24が矩形状筒体30の各内部隅角部38(38A,38B,38C,38D)まで膨張した状態において、破断予定部34の破断により相互に分離して外方へ開放する。このためエアバッグ24は、図20および図21に例示したように、矩形状に開口したエアバッグ通過口40の各隅角部42(42A,42B,42C,42D)まで大きく広がった状態で、このエアバッグ通過口40を介してインストルメントパネル10の外方へ膨張展開するようになる。そして、TPOから形成されたエアバッグドアAD1の場合、一気に開放した各ドアパネル32(32A,32B,32C,32D)がスプリングバックによる反動で閉成方向へ戻り易くなっているため、このスプリングバックにより該ドアパネル32(32A,32B,32C,32D)の開放角度が小さくなると、ドアパネル32(32A,32B,32C,32D)のヒンジ部36に近い部位では、ドア端縁部間の距離がより小さくなると共に、ドア端縁部と矩形筒状体30の開口端縁との距離も小さくなる。従って、隣接するドアパネル32(32A,32B,32C,32D)の端縁部間および/またはドアパネル32(32A,32B,32C,32D)と矩形状筒体30の開口端縁との間に、エアバッグ24が挟まれ易くなっていた。   Further, the door panels 32 are separated from each other by the breakage of the planned breakage portion 34 in a state where the airbag 24 is inflated to the respective internal corner portions 38 (38A, 38B, 38C, 38D) of the rectangular cylindrical body 30. Open to the direction. For this reason, as illustrated in FIGS. 20 and 21, the airbag 24 is in a state where the airbag 24 is greatly expanded to each corner portion 42 (42 </ b> A, 42 </ b> B, 42 </ b> C, 42 </ b> D) of the airbag passing port 40 that is opened in a rectangular shape, Inflating and deploying outward of the instrument panel 10 through the airbag passing port 40 is achieved. In the case of the airbag door AD1 formed from TPO, each door panel 32 (32A, 32B, 32C, 32D) that is opened at once is easy to return in the closing direction due to the reaction by the spring back. When the opening angle of the door panel 32 (32A, 32B, 32C, 32D) becomes small, the distance between the door edge portions becomes smaller at a portion near the hinge portion 36 of the door panel 32 (32A, 32B, 32C, 32D). At the same time, the distance between the door edge and the opening edge of the rectangular tubular body 30 is also reduced. Accordingly, the air between the edge portions of the adjacent door panels 32 (32A, 32B, 32C, 32D) and / or between the door panel 32 (32A, 32B, 32C, 32D) and the opening edge of the rectangular cylindrical body 30 is provided. The bag 24 was easily pinched.

従って本発明は、膨張時におけるエアバッグがエアバッグ通過口の隅角部から離間して展開するよう構成して、ドアパネルの円滑な開放を実現すると共にエアバッグの適切な膨張がなされるようにしたエアバッグドアを提供することを目的とする。   Therefore, the present invention is configured so that the airbag when inflated is deployed away from the corner of the airbag passage so that the door panel can be smoothly opened and the airbag can be appropriately inflated. An object of the present invention is to provide an airbag door.

前記課題を解決し、所期の目的を達成するため本発明は、
車両内装部材を構成する基材に配設されてエアバッグ装置に連結され、4つの内部隅角部を有する矩形状筒体と、この筒体の前記基材側に一体的に設けられ、該筒体の中央に位置する中央破断予定部および該中央破断予定部の両端から該筒体の内部隅角部まで斜めに延在する側方破断予定部の破断により4枚に分割可能なドアパネルとを備え分割した前記各ドアパネルが筒体に沿うヒンジ部を中心として前記基材の外方へ開放することで、前記筒体の内側に前記エアバッグの展開を許容する矩形のエアバッグ通過口を形成するエアバッグドアにおいて、
前記筒体の前記内部隅角部に設けられ、前記エアバッグ装置側から前記エアバッグ通過口に近づくに従い該エアバッグ通過口の中央側へ傾斜する傾斜面を有した規制部を備え、
前記傾斜面における前記エアバッグ通過口側の端部が、エアバッグ通過口の各隅角部より該エアバッグ通過口の中央側に位置することを特徴とする。
In order to solve the above-mentioned problems and achieve the intended purpose, the present invention provides:
Disposed on a substrate constituting a vehicle interior member is coupled to an air bag device, a rectangular cylindrical body having four internal corners, provided integrally with the base material side of the cylindrical body, A door panel that can be divided into four parts by breaking a central fracture planned portion located at the center of the cylindrical body and a lateral fracture planned section extending obliquely from both ends of the central fracture planned portion to an internal corner of the cylindrical body with the door, split the that each door panel is opened to the outside of the base about a hinge portion extending along the cylindrical body, rectangular airbag passage that allows the deployment of the airbag on the inside of the cylindrical body In the airbag door that forms the mouth,
Provided at the inner corner of the cylindrical body , comprising a regulating portion having an inclined surface that inclines toward the center side of the airbag passing port as it approaches the airbag passing port from the airbag device side ,
An end of the inclined surface on the side of the airbag passing port is located on the center side of the airbag passing port from each corner of the airbag passing port .

本発明に係るエアバッグドアによれば、矩形状をなす筒体の内部隅角部に、ドアパネルの裏面に近づくに従ってエアバッグ通過口の中央側へ傾斜する規制部を設けたことにより、破断予定部に対するエアバッグの押圧力を有効に加わるようにし得るため、該破断予定部の破断を早期に完了させてドアパネルを円滑に開放させることができ、エアバッグの適切な膨張展開を実現することが可能となる利点がある。また、エアバッグ通過口を介して膨張するエアバッグが、4枚のドアパネルにおける隣接するドアパネルのヒンジ部に近い端縁部間ドアパネルのヒンジ部に近い端縁部と筒体の開口端縁との間に挟まる現象が発現し難いため、車両内装部材の外方へエアバッグを適切に膨張展開させ得る等の有益な効果を奏する。 According to the air bag door according to the present invention, the inside corner of the tubular body forming the rectangular shape, by providing the restricting portion inclined toward the center of the airbag passage port toward the back surface of the door panel, tearable Since it is possible to effectively apply the pressing force of the airbag to the portion, it is possible to open the door panel smoothly by completing the breaking of the planned breaking portion at an early stage, and to realize an appropriate inflation and deployment of the airbag There are advantages that are possible. The air bag which is inflated via an air bag passage port, the opening edge of the adjacent edge near the hinge portion near the edge portion and between the door panel to the hinge part of the door panel and the cylindrical body in the four door panels Since the phenomenon of being sandwiched between the two is difficult to occur, there is a beneficial effect that the airbag can be appropriately inflated and deployed outward of the vehicle interior member.

次に、本発明に係るエアバッグドアの開放構造につき、好適な実施例を挙げて、添付図面を参照しながら以下説明する。   Next, the opening structure of the airbag door according to the present invention will be described below with reference to the accompanying drawings by giving a preferred embodiment.

本発明に係るエアバッグドアは、複層構造(3層構造、2層構造)および単層構造をなす種々の車両内装部材に設けられ、4枚のドアパネルからなる四方開きタイプ実施可能である。そこで後述する実施例では、車両内装部材として3層構造をなすインストルメントパネルを例示し、このインストルメントパネルに対して4枚のドアパネルからなる四方開きタイプのエアバッグドアを設けた場合につき説明する。従って、図18〜図21を引用して説明した従来技術の項における既出の部材・部位と同一の部材・部位については、同一の符号を付して説明する。 Air bag door according to the present invention is provided in a variety of vehicle interior member having multilayer structure (3-layer structure, a two-layer structure) of and a single-layer structure can be implemented in four open type consisting of four door panels . Therefore, in an embodiment to be described later, an instrument panel having a three-layer structure is illustrated as a vehicle interior member, and a case where a four-way opening type airbag door including four door panels is provided on the instrument panel will be described. . Therefore, the same members / parts as those already described in the section of the prior art described with reference to FIGS.

図1は、好適実施例に係るエアバッグドアを、各ドアパネルの開放により形成されたエアバッグ通過口を介してエアバッグが展開している状態で示した説明斜視図であり、図6は、図1のVI−VI線断面図である。本実施例のエアバッグドアADは、車両内装部材であるインストルメントパネル10を構成する基材12およびエアバッグ装置20の間に配設された実質的に矩形状をなす筒体30と、この筒体30に開放可能に設けられたドアパネル32とからなり、エアバッグ装置20の作動により膨張するエアバッグ24の押圧力を利用して各ドアパネル32(32A,32B,32C,32D)を外方へ開放させ、各ドアパネル32(32A,32B,32C,32D)の開放により筒体30に開口したエアバッグ通過口40を介して該エアバッグ24を外方へ展開させるものである。ここで本願で規定する「筒体」30とは、全体的な形状が実質的に矩形状をなすものであって、その4つの各隅角部がエッジが効いた角状のみならず、適宜半径(10mm程度)の曲面状または面取り状に形成されているものも含んだものである。従って後述する実施例では、実質的に矩形状をなす筒体30を「矩形状筒体30」と称する。   FIG. 1 is an explanatory perspective view showing an airbag door according to a preferred embodiment in a state in which the airbag is deployed through an airbag passage opening formed by opening each door panel. It is the VI-VI sectional view taken on the line of FIG. The airbag door AD of the present embodiment includes a cylindrical body 30 having a substantially rectangular shape disposed between the base material 12 constituting the instrument panel 10 that is a vehicle interior member and the airbag device 20, Each door panel 32 (32A, 32B, 32C, 32D) is opened outward by using the pressing force of the airbag 24 that is inflated by the operation of the airbag device 20. The airbag 24 is deployed outwardly through the airbag passage opening 40 opened in the cylindrical body 30 by opening each door panel 32 (32A, 32B, 32C, 32D). Here, the “cylindrical body” 30 defined in the present application is one in which the overall shape is substantially rectangular, and each of the four corners is not limited to a square shape in which an edge is effective. This includes a curved surface or a chamfered shape having a radius (about 10 mm). Accordingly, in the embodiments described later, the substantially rectangular cylinder 30 is referred to as a “rectangular cylinder 30”.

本実施例のエアバッグドアADは、図2に例示するように、例えばオレフィン系の熱可塑性エラストマ(TPO)等の靭性が高く柔軟性に富んだ樹脂素材からインジェクション成形技術に基づいて成形され、前述した矩形状筒体30およびドアパネル32が一体的に形成されたドア成形部材として形成されている。このようなエアバッグドアADは、基材12の所要位置に形成した開口設置部18に対して取付けることで、各ドアパネル32(32A,32B,32C,32D)が基材12の外面に臨むようになると共に、矩形状筒体30は基材12の裏側へ延出するようになる。そして矩形状筒体30は、エアバッグ24の膨張方向を基準とした前端側である基材側が基材12に係止されていると共に、後端側であるエアバッグ装置側がエアバッグ装置20のインフレータケース22へ連結支持され、各ドアパネル32およびエアバッグ装置20を囲繞した状態となっている。なお矩形状筒体30には、エアバッグ装置20の係止片26が係止される係止口44が穿設されており、各係止片26が対応の係止口44へ係止されることで連結が図られる。   As illustrated in FIG. 2, the airbag door AD of the present embodiment is molded based on an injection molding technique from a tough and flexible resin material such as an olefin-based thermoplastic elastomer (TPO). The rectangular cylindrical body 30 and the door panel 32 described above are formed as a door molding member formed integrally. Such an airbag door AD is attached to the opening installation portion 18 formed at a required position of the base material 12 so that each door panel 32 (32A, 32B, 32C, 32D) faces the outer surface of the base material 12. At the same time, the rectangular cylindrical body 30 extends to the back side of the substrate 12. The rectangular cylindrical body 30 is configured such that the base material side, which is the front end side with respect to the inflating direction of the airbag 24, is locked to the base material 12, and the airbag device side that is the rear end side is the airbag device 20. The door panel 32 and the airbag device 20 are surrounded and supported by the inflator case 22. The rectangular cylindrical body 30 is provided with a locking port 44 for locking the locking piece 26 of the airbag device 20, and each locking piece 26 is locked to the corresponding locking port 44. By doing so, connection is achieved.

エアバッグドアADは、両Y字形に延設した破断予定部34が破断することで分離される4枚のドアパネル32(32A,32B,32C,32D)からなり、インストルメントパネル10の前後方向(乗員席側およびフロントウィンドウ側)へ開放するドアパネル32A,32Bは略台形状を呈し、インストルメントパネル10の左右方向へ開放するドアパネル32C,32Dは略三角形状を呈している。破断予定部34は、各ドアパネル32(32A,32B,32C,32D)の境界ラインに沿って横断面V字状の溝を延設した結果としてドアパネル32の厚みよりも薄く設定された薄肉脆弱部位であって、中央に位置する中央破断予定部34Aおよび該中央破断予定部34Aの両端側に位置する側方破断予定部34Bからなり、エアバッグ装置20の作動によりエアバッグ24の押圧力が各ドアパネル32の裏面に加わった際には、これによる応力が集中的に加わることで破断が惹起される。   The airbag door AD is composed of four door panels 32 (32A, 32B, 32C, 32D) that are separated when the planned breakage portion 34 extending in both Y-shapes breaks. The door panels 32A and 32B that open to the passenger seat side and the front window side have a substantially trapezoidal shape, and the door panels 32C and 32D that open in the left-right direction of the instrument panel 10 have a substantially triangular shape. The planned fracture portion 34 is a thin fragile portion that is set thinner than the thickness of the door panel 32 as a result of extending a V-shaped cross section along the boundary line of each door panel 32 (32A, 32B, 32C, 32D). The central breakage planned portion 34A located in the center and the side breakage planned portions 34B located on both ends of the central breakage scheduled portion 34A. When applied to the back surface of the door panel 32, the stress is applied intensively to cause breakage.

そして各々のドアパネル32(32A,32B,32C,32D)は、その一側端縁、すなわち矩形状筒体30に臨む側端縁に沿ってヒンジ部36が沿設されている。このヒンジ部36は、ドアパネル32の厚みの1/2程度の厚みに設定した所要幅の薄肉帯状部分であって、ドアパネル32の裏面にエアバッグ24の押圧力が加わっても破断しないと共に、膨張するエアバッグ24に押されてドアパネル32が押上げられる際に撓曲的または屈曲的に変形して、矩形状筒体30に支持された状態で当該のドアパネル32が開放変位するのを許容するようになっている。   Each door panel 32 (32 </ b> A, 32 </ b> B, 32 </ b> C, 32 </ b> D) is provided with a hinge portion 36 along one side edge, that is, the side edge facing the rectangular cylindrical body 30. The hinge portion 36 is a thin strip-like portion having a required width set to a thickness of about ½ of the thickness of the door panel 32. The hinge portion 36 does not break even when the pressing force of the airbag 24 is applied to the back surface of the door panel 32, and is inflated When the door panel 32 is pushed up by the airbag 24, the door panel 32 is deformed flexibly or flexibly to allow the door panel 32 to be opened and displaced while being supported by the rectangular cylindrical body 30. It is like that.

そして本実施例のエアバッグドアADでは、図1〜図3等に例示するように、前述した矩形状筒体30の内壁面でかつ開口が予定されるエアバッグ通過口40の隅角部42(42A,42B,42C,42D)に近接して、エアバッグ24の膨張方向を規制する規制部50を設けたことを特徴としている。これにより、エアバッグ装置20の作動により膨張を開始したエアバッグ24が、前述した規制部50に接触しながらその膨張方向がエアバッグ通過口40の中央側へ適宜変向され、このエアバッグ通過口40を通過するに際しては該エアバッグ通過口40の各隅角部42(42A,42B,42C,42D)から離間して展開するよう構成されている。すなわち、破断予定部34の早期の破断完了および各ドアパネル32(32A,32B,32C,32D)の円滑な開放を実現し、エアバッグ24の適切な膨張が行なわれるようになっている。   In the airbag door AD of the present embodiment, as illustrated in FIG. 1 to FIG. 3 and the like, the corner 42 of the airbag passage 40 on the inner wall surface of the rectangular cylindrical body 30 and the opening is planned. In the vicinity of (42A, 42B, 42C, 42D), a restricting portion 50 for restricting the inflating direction of the airbag 24 is provided. As a result, the airbag 24 that has started to be inflated by the operation of the airbag device 20 is appropriately changed in the direction of inflation toward the center of the airbag passage 40 while contacting the regulating portion 50 described above. When passing through the opening 40, the airbag 40 is configured to be deployed away from each corner portion 42 (42A, 42B, 42C, 42D) of the airbag passing opening 40. That is, early breakage of the planned breakage portion 34 and smooth opening of the door panels 32 (32A, 32B, 32C, 32D) are realized, and the airbag 24 is appropriately inflated.

前述した規制部50は、図3(a),(b)に例示するように、例えばポリエチレン(PE)、ポリプロピレン(PP)またはABS等の樹脂素材から、インジェクション成形技術等に基づいて矩形状筒体30とは別体に形成された成形部材であり、リベット70等の適宜の取付手段により該矩形状筒体30の内部隅角部38(38A,38B,38C,38D)に取付固定されるようになっている。具体的には、エアバッグ装置20側(後端側)からエアバッグ通過口40側(先端側)に向け、該エアバッグ通過口40の中央側へ傾斜するようになる傾斜面52と、この傾斜面52の両側に連設されて該傾斜面52を挟んで直角に延出する取付片54,54とから構成されており、傾斜面52の裏側には補強リブ56が形成されている。そして各取付片54,54には、前述したリベット70の軸部74の挿通を許容する挿通孔58と、該リベット70のヘッド部72が整合する陥凹部60が形成されていると共に、該ヘッド部72へエアバッグ24が接触するのを防止するための凸状案内面62が形成されている。なお矩形状筒体30には、前述した挿通孔58に整合してリベット70の軸部74の挿通を許容する取付孔46が追加穿設されている(図2)。   As illustrated in FIGS. 3A and 3B, the restricting portion 50 described above is formed from a resin material such as polyethylene (PE), polypropylene (PP), or ABS based on an injection molding technique or the like. The molded member is formed separately from the body 30 and is fixedly attached to the internal corners 38 (38A, 38B, 38C, 38D) of the rectangular cylindrical body 30 by appropriate mounting means such as a rivet 70. It is like that. Specifically, an inclined surface 52 that inclines from the airbag device 20 side (rear end side) toward the airbag passing port 40 side (front end side) toward the center of the airbag passing port 40, and It is composed of attachment pieces 54, 54 that are provided on both sides of the inclined surface 52 and extend at right angles across the inclined surface 52, and reinforcing ribs 56 are formed on the back side of the inclined surface 52. Each of the mounting pieces 54 and 54 is formed with an insertion hole 58 that allows the shaft portion 74 of the rivet 70 to be inserted, and a recess 60 in which the head portion 72 of the rivet 70 is aligned. A convex guide surface 62 for preventing the airbag 24 from coming into contact with the portion 72 is formed. The rectangular cylindrical body 30 is additionally provided with a mounting hole 46 that allows the shaft portion 74 of the rivet 70 to be inserted in alignment with the aforementioned insertion hole 58 (FIG. 2).

そして本実施例のエアバッグドアADでは、図1,図2および図7に例示するように、前述した形状の規制部50を、矩形状筒体30における4つの各内部隅角部38(38A,38B,38C,38D)の全てに、その傾斜面52の一端がドアパネル32(32A,32B,32C,32D)に近接するように設けてある。これにより矩形状筒体30の内部空間は、エアバッグ装置20に臨む後端側の長矩形状からエアバッグ通過口40に臨む先端側の長八角形状へ連続的に形状変形している。従って、膨張を開始したエアバッグ24は、図4に例示するように、矩形状筒体30の内部空間からエアバッグ通過口40へ到来するに際し、各々の規制部50における傾斜面52に接触した部位が外方へ膨張するのが規制され、エアバッグ通過口40を通過する際には各隅角部42(42A,42B,42C,42D)から離間して展開するようになる。   In the airbag door AD of the present embodiment, as illustrated in FIGS. 1, 2, and 7, the restricting portion 50 having the above-described shape is replaced with each of the four internal corner portions 38 (38 </ b> A) of the rectangular cylindrical body 30. , 38B, 38C, 38D), one end of the inclined surface 52 is provided so as to be close to the door panel 32 (32A, 32B, 32C, 32D). Thereby, the internal space of the rectangular cylindrical body 30 is continuously deformed from a long rectangular shape on the rear end side facing the airbag device 20 to a long octagonal shape on the front end side facing the airbag passing port 40. Therefore, as illustrated in FIG. 4, the airbag 24 that has started inflating comes into contact with the inclined surface 52 of each regulating portion 50 when it arrives at the airbag passing port 40 from the internal space of the rectangular cylindrical body 30. The portion is restricted from inflating outward, and when passing through the air bag passage opening 40, the portion is deployed away from each corner portion 42 (42A, 42B, 42C, 42D).

次に、前述のように構成された本実施例のエアバッグドアの作用につき、図4〜図6を引用して説明する。   Next, the operation of the airbag door of the present embodiment configured as described above will be described with reference to FIGS.

衝突等の衝撃を感知したエアバッグ装置20の作動により膨張を開始したエアバッグ24は、矩形状筒体30の内部空間内で側方へ広がりながら上昇し、矩形状筒体30の内壁面を押圧すると共に各規制部50の傾斜面52へ当接するようになる。そして、各規制部50により適宜変向されながら膨張するエアバッグ24は、図4に例示するように、開口が予定されるエアバッグ通過口40の中央側に向けて膨張するので、破断予定部34の中央破断予定部34Aおよびその近傍部位を押圧するようになり、当該エアバッグ24の押圧力はこの中央破断予定部34Aへ効率的に加わるようになる。従って破断予定部34は、中央破断予定部34Aに応力が集中して破断が早期に惹起されると共に、これが側方破断予定部34B,34Bへ一気に進行するようになるから、図5に例示するように、エアバッグ24の膨張初期段階において破断予定部34の破断が早期に完了し、各ドアパネル32(32A,32B,32C,32D)の開放が許容される。   The airbag 24 that has started to inflate by the operation of the airbag device 20 that senses an impact such as a collision is lifted while spreading laterally within the internal space of the rectangular cylindrical body 30, and the inner wall surface of the rectangular cylindrical body 30 is lifted. While pressing, it comes into contact with the inclined surface 52 of each restricting portion 50. The airbag 24 that is inflated while being appropriately turned by each regulating portion 50 is inflated toward the center side of the airbag passing port 40 where the opening is planned as illustrated in FIG. The central breakage planned portion 34A of 34 and the vicinity thereof are pressed, and the pressing force of the airbag 24 is efficiently applied to the planned central breakage portion 34A. Accordingly, the planned fracture portion 34 is illustrated in FIG. 5 because stress concentrates on the central fracture planned portion 34A and breakage is caused at an early stage, and this proceeds to the lateral fracture planned portions 34B and 34B at a stretch. As described above, in the initial stage of inflation of the airbag 24, the breakage of the planned breakage portion 34 is completed early, and the door panels 32 (32A, 32B, 32C, 32D) are allowed to be opened.

破断予定部34の破断後、エアバッグ24の押圧力を継続的に受けている各ドアパネル32(32A,32B,32C,32D)が、発泡体14および表皮材16と共にインストルメントパネル10の外方へ開放すると、矩形状筒体30の基材側にエアバッグ通過口40が開口形成され、このエアバッグ通過口40を介してエアバッグ24が膨張展開するようになる。ここでエアバッグ通過口40の各隅角部42(42A,42B,42C,42D)には前述した規制部50が臨んでいるため、このエアバッグ通過口40を通過するエアバッグ24は、図1および図6に例示したように、各隅角部42A,42B,42C,42Dから離間して膨張展開するようになる。   After breakage of the planned breakage portion 34, the door panels 32 (32 </ b> A, 32 </ b> B, 32 </ b> C, 32 </ b> D) continuously receiving the pressing force of the airbag 24 are moved outward of the instrument panel 10 together with the foam 14 and the skin material 16. When opened, the airbag passage opening 40 is formed on the base of the rectangular cylindrical body 30, and the airbag 24 is inflated and deployed through the airbag passage opening 40. Here, since the restricting portion 50 described above faces each corner portion 42 (42A, 42B, 42C, 42D) of the airbag passing port 40, the airbag 24 passing through the airbag passing port 40 is shown in FIG. As illustrated in FIG. 1 and FIG. 6, they are inflated and deployed away from the respective corner portions 42A, 42B, 42C, 42D.

そして、一気に開放した各ドアパネル32(32A,32B,32C,32D)がスプリングバックによる反動で閉成方向へ戻り、隣接するドアパネル32(32A,32B,32C,32D)の端縁部がエアバッグ通過口40の各隅角部42(42A,42B,42C,42D)の上方で近接したとしても、前述したように、エアバッグ24は各隅角部42(42A,42B,42C,42D)から離間して膨張展開しているから、該エアバッグ24がこれらドアパネル32(32A,32B,32C,32D)で挟み込まれることが防止される。従ってエアバッグ24は、適切に膨張展開するようになる。   Then, each door panel 32 (32A, 32B, 32C, 32D) opened at a stroke returns to the closing direction by a reaction caused by the spring back, and the edge of the adjacent door panel 32 (32A, 32B, 32C, 32D) passes through the airbag. Even if the corners 42 (42A, 42B, 42C, 42D) of the mouth 40 are close to each other, as described above, the airbag 24 is separated from the corners 42 (42A, 42B, 42C, 42D). Thus, the airbag 24 is prevented from being sandwiched between the door panels 32 (32A, 32B, 32C, 32D). Accordingly, the airbag 24 is appropriately inflated and deployed.

このように本実施例のエアバッグドアADでは、実質的に矩形状をなす矩形状筒体30の内壁面でかつ開口が予定されるエアバッグ通過口40の各隅角部42(42A,42B,42C,42D)に近接して、エアバッグ24の膨張方向を規制する規制部50を設けたことにより、破断予定部34に対するエアバッグ24の押圧力を有効に加わるようにし得るため、該破断予定部34の破断を早期に完了させて各ドアパネル32(32A,32B,32C,32D)を円滑に開放させることができ、エアバッグ24の適切な膨張展開を実現することが可能である。また、エアバッグ通過口40を介して膨張するエアバッグ24が、隣接するドアパネル32(32A,32B,32C,32D)のヒンジ部36に近い端縁部間および/またはドアパネル32(32A,32B,32C,32D)のヒンジ部36に近い端縁部と矩形状筒体30の開口端縁との間に挟まる現象が発現し難いため、インストルメントパネル10の外方へエアバッグ24を適切に膨張展開させ得る。   As described above, in the airbag door AD of the present embodiment, each corner portion 42 (42A, 42B) of the airbag passage opening 40 on the inner wall surface of the rectangular tube 30 having a substantially rectangular shape and which is scheduled to be opened. , 42C, 42D) in the vicinity of the air bag 24, by providing the restricting portion 50 for restricting the inflation direction of the air bag 24, it is possible to effectively apply the pressing force of the air bag 24 to the planned break portion 34. By breaking the planned portion 34 at an early stage, each door panel 32 (32A, 32B, 32C, 32D) can be opened smoothly, and the airbag 24 can be appropriately inflated and deployed. Further, the airbag 24 that is inflated through the airbag passage port 40 is located between the edge portions near the hinge portion 36 of the adjacent door panel 32 (32A, 32B, 32C, 32D) and / or the door panel 32 (32A, 32B, 32C, 32D), and the airbag 24 is appropriately inflated to the outside of the instrument panel 10 because the phenomenon of being pinched between the edge portion close to the hinge portion 36 and the opening edge of the rectangular cylindrical body 30 is difficult to appear. Can be deployed.

なお規制部50は、図3等に例示した形状のものに限定されるものではなく、エアバッグ24の膨張方向に適切に規制し得るものであればこれ以外の形状であってもよい。また規制部50は、前述した合成樹脂製のものに限定されるものではなく、金属製の成形部材であってもよい。また、矩形状筒体30に対する規制部50の取付形態は、前述したリベット70によるものに限定されるものではなく、(a)クリップ、ボルト&ナット等による固定形態、(b)熱溶着や振動溶着等による固定形態(規制部50が合成樹脂製の場合)、等が実施可能である。   The restricting portion 50 is not limited to the shape illustrated in FIG. 3 and the like, and may have other shapes as long as it can be appropriately restricted in the inflation direction of the airbag 24. Further, the restricting portion 50 is not limited to the above-described synthetic resin, and may be a metal molded member. Further, the attachment form of the restricting portion 50 to the rectangular cylindrical body 30 is not limited to that by the rivet 70 described above, (a) a fixed form by clips, bolts & nuts, etc., (b) thermal welding or vibration. A fixing form by welding or the like (when the regulation part 50 is made of a synthetic resin) or the like can be implemented.

また、本願が規定する規制部50における傾斜面52の形態は、前述した実施例に例示の平坦面状としたものに限定されるものではない。例えば傾斜面52は、図10に例示したような凹曲面状としたものや、図11に例示したような凸曲面状としたものでもよい。また図示は省略するが、前述した補強リブ56のような形態のリブを規制部50の表側へ臨んだ状態で複数形成し、これらリブの端面でエアバッグ24を案内するようにしてもよい。すなわち、規制部50の表側に、垂直方向へ延在するリブを横方向へ所要間隔毎に複数突設したり、或いは水平方向へ延在するリブを縦方向へ所要間隔毎に複数突設し、これら各リブの端面により傾斜面52を形成することも可能である。更に、各内部隅角部38(38A,38B,38C,38D)毎に、異なる形態の規制部50を混在して取付けるようにしてもよい。   Further, the form of the inclined surface 52 in the restricting portion 50 defined by the present application is not limited to the flat surface illustrated in the above-described embodiment. For example, the inclined surface 52 may be a concave curved surface as illustrated in FIG. 10 or a convex curved surface as illustrated in FIG. Although not shown in the drawings, a plurality of ribs such as the reinforcing rib 56 described above may be formed facing the front side of the restricting portion 50, and the airbag 24 may be guided by the end surfaces of these ribs. That is, a plurality of ribs extending in the vertical direction at the required intervals are provided on the front side of the restricting portion 50, or a plurality of ribs extending in the horizontal direction are provided at the required intervals in the vertical direction. It is also possible to form the inclined surface 52 by the end surfaces of these ribs. Furthermore, you may make it attach the restriction | limiting part 50 of a different form for every internal corner part 38 (38A, 38B, 38C, 38D).

また前述した実施例では、矩形状筒体30における4つの内部隅角部38(38A,38B,38C,38D)の全てに規制部50を設けた場合を例示したが、この規制部50の配設形態はこれに限定されるものではない。すなわちエアバッグ24は、主に乗員席側へ膨張展開するようになってフロントウィンドウ側へは膨張展開しないため、例えば図8に例示するように、矩形状筒体30における4つの内部隅角部38(38A,38B,38C,38D)において、少なくとも乗員席側に隣接する内部隅角部38A,38Bにだけ規制部50を設けるようにしてもよい。   In the above-described embodiment, the case where the restricting portions 50 are provided in all the four internal corner portions 38 (38A, 38B, 38C, 38D) in the rectangular cylindrical body 30 is illustrated. The configuration is not limited to this. That is, since the airbag 24 is inflated and deployed mainly toward the passenger seat and not inflated and deployed toward the front window, for example, as illustrated in FIG. 8, four internal corner portions of the rectangular cylindrical body 30 are provided. 38 (38A, 38B, 38C, 38D), the restriction portion 50 may be provided only at least at the internal corner portions 38A, 38B adjacent to the passenger seat side.

また前述した実施例では、矩形状筒体30における各内部隅角部38(38A,38B,38C,38D)に取付けられる形状の規制部50を例示したが、この規制部50の形状や形態はこれに限定されるものではない。例えば図9に例示するように、矩形状筒体30の内側において、ヒンジ部36に臨むドアパネル32のヒンジ端に沿って延在する長尺部材として規制部50を形成してもよい。このような形態の規制部50の場合、インストルメントパネル10の前後方向へ開放するドアパネル32A,32Bのヒンジ端に沿設したり、少なくとも乗員席側へ開放するドアパネル32Aのヒンジ端に沿設するようにするのが望ましい。   In the above-described embodiment, the restricting portion 50 having a shape attached to each internal corner portion 38 (38A, 38B, 38C, 38D) in the rectangular cylindrical body 30 is exemplified, but the shape and form of the restricting portion 50 are as follows. It is not limited to this. For example, as illustrated in FIG. 9, the restriction portion 50 may be formed as a long member extending along the hinge end of the door panel 32 facing the hinge portion 36 inside the rectangular cylindrical body 30. In the case of the restriction part 50 having such a configuration, it is provided along the hinge end of the door panel 32A, 32B that opens in the front-rear direction of the instrument panel 10, or at least along the hinge end of the door panel 32A that opens to the passenger seat side. It is desirable to do so.

なお、長尺状の規制部50の場合は、図9に例示したような平坦面状のものに限定されず、例えば図12に例示したような凹曲面状としたもの等も好適に実施可能である。更には、図13に例示するように、エアバッグ通過口40の内周縁全体に延在する枠体状に形成したものとしてもよい。   In addition, in the case of the elongate regulation part 50, it is not limited to the flat surface shape as illustrated in FIG. 9, for example, a concave surface shape as illustrated in FIG. It is. Furthermore, as illustrated in FIG. 13, it may be formed in a frame shape extending over the entire inner peripheral edge of the airbag passing port 40.

更に前述した実施例では、前述した規制部50が矩形状筒体30とは別体に形成されて、リベット70により該矩形状筒体30の内壁面に取付けられる形態を例示したが、インジェクション成形時の制約等がなければ、図14に例示するように、規制部50を矩形状筒体30の内壁面に一体的に形成するようにしてもよい。このようなエアバッグドアADにおいても、図15に例示するように、破断予定部34に対してエアバッグ24の押圧力が有効に加わるようにさせ得るため、該破断予定部34の破断を早期に完了させて各ドアパネル32(32A,32B,32C,32D)を円滑に開放させることができ、エアバッグ24の適切な膨張展開を実現することが可能である。また、図16に例示するように、エアバッグ通過口40を介して膨張するエアバッグ24が、隣接するドアパネル32(32A,32B,32C,32D)のヒンジ部36に近い端縁部間および/またはドアパネル32のヒンジ部36に近い端縁部と矩形状筒体30の開口端縁との間にエアバッグ24が挟まる現象が発現し難いため、インストルメントパネル10の外方へエアバッグ24を適切に膨張展開させ得る。   Further, in the above-described embodiment, the restriction portion 50 described above is formed separately from the rectangular cylindrical body 30 and is illustrated as being attached to the inner wall surface of the rectangular cylindrical body 30 by the rivet 70. If there is no time restriction or the like, the restricting portion 50 may be integrally formed on the inner wall surface of the rectangular cylindrical body 30 as illustrated in FIG. Also in such an airbag door AD, as illustrated in FIG. 15, since the pressing force of the airbag 24 can be effectively applied to the planned breaking portion 34, the breaking portion 34 can be broken early. Thus, the door panels 32 (32A, 32B, 32C, 32D) can be opened smoothly, and the airbag 24 can be appropriately inflated and deployed. In addition, as illustrated in FIG. 16, the airbag 24 that is inflated through the airbag passage port 40 is disposed between the edge portions near the hinge portion 36 of the adjacent door panel 32 (32A, 32B, 32C, 32D) and / or Alternatively, since the phenomenon in which the airbag 24 is sandwiched between the edge portion near the hinge portion 36 of the door panel 32 and the opening edge of the rectangular cylindrical body 30 is difficult to occur, the airbag 24 is moved outward from the instrument panel 10. Can be inflated appropriately.

なお、図14〜図16に例示したエアバッグドアADでは、矩形状筒体30へ規制部50が一体的に形成されているため、規制部50の成形作業および矩形状筒体30に対する該規制部50の取付作業を省略し得るため、製作コストの低減が期待できる。   In addition, in the airbag door AD illustrated in FIGS. 14 to 16, the restriction portion 50 is formed integrally with the rectangular cylindrical body 30, and therefore, the molding operation of the restriction portion 50 and the restriction on the rectangular cylindrical body 30. Since the attachment work of the part 50 can be omitted, a reduction in production cost can be expected.

更に前述した実施例では、基材12、発泡体14および表皮材16からなる3層構造のインストルメントパネル10にエアバッグドアADを設けた場合を例示したが、本願のエアバッグドアADは、図17に例示するように、基材12からなる単層構造のインストルメントパネル10に実施することも可能である。このような単層構造のインストルメントパネル10に実施しても、前述した実施例と同等の効果が得られ、エアバッグ24の乗員保護機能が適切に発揮され得る。   Further, in the above-described embodiment, the case where the airbag door AD is provided in the instrument panel 10 having the three-layer structure including the base material 12, the foam 14 and the skin material 16 is illustrated. As illustrated in FIG. 17, it is also possible to implement the instrument panel 10 having a single layer structure made of the base material 12. Even when implemented on the instrument panel 10 having such a single-layer structure, the same effect as the above-described embodiment can be obtained, and the passenger protecting function of the airbag 24 can be appropriately exhibited.

更にまた、本発明に係るエアバッグドアは、インストルメントパネルに設けたものに限定されるものではなく、これ以外にドアパネル等に設けたサイドエアバッグ装置に付帯されるエアバッグドアや、ピラーガーニッシュおよびルーフサイドパネル(ルーフパネル)等に設けたカーテンエアバッグ装置に付帯されるエアバッグドア等も対象とされる。   Furthermore, the airbag door according to the present invention is not limited to the one provided on the instrument panel, and other than this, the airbag door attached to the side airbag device provided on the door panel or the like, the pillar garnish Further, an airbag door attached to a curtain airbag device provided on a roof side panel (roof panel) or the like is also targeted.

本発明に係るエアバッグドアは、車両内装部材を構成する基材に配設されて実質的に矩形状をなす筒体と、この矩形状筒体に開放可能に設けられたドアパネルとからなり、エアバッグ装置の作動によりエアバッグが膨張してドアパネルを外方へ開放させ、矩形状筒体に開口したエアバッグ通過口を介してエアバッグを外方へ展開させるようにしたエアバッグドアが対象とされ、エアバッグ装置を搭載した種々自動車等に好適に実施可能である。   The airbag door according to the present invention includes a cylindrical body that is disposed on a base material that constitutes a vehicle interior member and has a substantially rectangular shape, and a door panel that can be opened to the rectangular cylindrical body. For airbag doors that are expanded by the operation of the airbag device to open the door panel outward and deploy the airbag outward through the airbag passage opening in the rectangular cylinder Therefore, the present invention can be suitably implemented in various automobiles equipped with an airbag device.

好適実施例に係るエアバッグドアを、各ドアパネルの開放により形成されたエアバッグ通過口を介してエアバッグが展開している状態で示した説明斜視図である。It is the explanatory perspective view which showed the airbag door which concerns on a suitable Example in the state which the airbag has expand | deployed via the airbag passage opening formed by open | release of each door panel. 矩形状筒体の内部隅角部へ、別体に形成された規制部を配設する状態を示したエアバッグドアの説明斜視図である。It is a description perspective view of the airbag door which showed the state which arrange | positions the control part formed separately in the internal corner part of a rectangular cylinder. 規制部の概略斜視図であって、(a)は表側から見た状態を示し、(b)は裏側から見た状態を示している。It is a schematic perspective view of a control part, Comprising: (a) shows the state seen from the front side, (b) has shown the state seen from the back side. エアバッグの膨張初期段階を示した説明断面図であって、各規制部によりエアバッグの膨張方向が規制され、破断予定部へ膨張エネルギが効率的に加わることを示している。It is explanatory sectional drawing which showed the inflation initial stage of the airbag, Comprising: The expansion | swelling direction of an airbag is controlled by each control part, and it has shown that expansion | swelling energy is efficiently added to a fracture | rupture planned part. 破断予定部の破断が完了して、分離した各ドアパネルが開放を開始した状態を示した説明断面図である。It is explanatory sectional drawing which showed the state from which the fracture | rupture of the planned fracture | rupture part was completed and each separated door panel started opening. 図1のVI−VI線断面図であって、エアバッグ通過口を通過するエアバッグが、該エアバッグ通過口の隅角部から離間して膨張展開することを示している。FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 1, showing that the airbag passing through the airbag passage opening is inflated and deployed away from the corner of the airbag passage opening. 矩形状筒体の全ての内部隅角部へ規制部を配設した形態を示した説明図である。It is explanatory drawing which showed the form which has arrange | positioned the control part to all the internal corner parts of a rectangular cylinder. 矩形状筒体の内部隅角部において、乗員席側に隣接する内部隅角部にだけ規制部を配設した形態を示した説明図である。It is explanatory drawing which showed the form which provided the control part only in the internal corner part adjacent to a passenger seat side in the internal corner part of a rectangular cylindrical body. インストルメントパネルの前後方向へ開放するドアパネルのヒンジ端に沿って、長尺状の規制部を配設した形態を示した説明図である。It is explanatory drawing which showed the form which arrange | positioned the elongate control part along the hinge edge of the door panel opened to the front-back direction of an instrument panel. 規制部の別形態を示した斜視図であって、凹曲面状の傾斜面を有する規制部を矩形状筒体の内部隅角部に取付けた状態を示している。It is the perspective view which showed another form of the control part, Comprising: The state which attached the control part which has a concave-curved inclined surface to the internal corner part of a rectangular cylinder is shown. 規制部の別形態を示した斜視図であって、凸曲面状の傾斜面を有する規制部を矩形状筒体の内部隅角部に取付けた状態を示している。It is the perspective view which showed another form of the control part, Comprising: The state which attached the control part which has a convex-curved inclined surface to the internal corner part of a rectangular cylinder is shown. 規制部の別形態を示した斜視図であって、凸曲面状の傾斜面を有する長尺状の規制部を矩形状筒体の内壁面に取付けた状態を示している。It is the perspective view which showed another form of the control part, Comprising: The state which attached the elongate control part which has a convex-curved inclined surface to the inner wall surface of a rectangular cylindrical body is shown. 規制部の別形態を示した斜視図であって、枠体状の規制部を取付けた状態を示している。It is the perspective view which showed another form of the control part, Comprising: The state which attached the frame-shaped control part is shown. 矩形状筒体の内部隅角部へ規制部が一体的に形成されたエアバッグドアを示した説明斜視図である。It is explanatory explanatory drawing which showed the airbag door by which the control part was integrally formed by the internal corner part of the rectangular cylindrical body. 図14に例示したエアバッグドアを実施したもとでのエアバッグの膨張初期段階を示した説明断面図であって、各規制部によりエアバッグの膨張方向が規制され、破断予定部へ膨張エネルギが効率的に加わることを示している。FIG. 15 is an explanatory cross-sectional view showing an initial stage of inflation of the airbag when the airbag door illustrated in FIG. 14 is implemented, and the inflation direction of the airbag is regulated by each regulation part, and the inflation energy is transmitted to the planned breaking part. Shows that it can be added efficiently. 図14に例示したエアバッグドアを実施したもとでのエアバッグが展開している状態を示した説明断面図であって、各ドアパネルの開放により形成されたエアバッグ通過口を通過するエアバッグが、該エアバッグ通過口の隅角部から離間して膨張展開することを示している。FIG. 15 is an explanatory cross-sectional view showing a state in which the airbag is deployed under the implementation of the airbag door illustrated in FIG. 14, and an airbag that passes through an airbag passage formed by opening each door panel. Indicates that the airbag is inflated and deployed away from the corner portion of the airbag passage opening. 単層構造のインストルメントパネルに本実施例のエアバッグドアを実施した状態を示した説明断面図である。It is explanatory sectional drawing which showed the state which implemented the airbag door of the present Example on the instrument panel of a single layer structure. エアバッグドアを設けた部位を一部破断して示したインストルメントパネルの部分斜視図である。It is the fragmentary perspective view of the instrument panel which showed the site | part which provided the airbag door partly fractured | ruptured. 図18のX−X線断面図である。It is the XX sectional view taken on the line of FIG. 従来のエアバッグドアを、各ドアパネルの開放により形成されたエアバッグ通過口を介してエアバッグが展開している状態で示した説明斜視図である。It is the explanatory perspective view which showed the conventional airbag door in the state which the airbag is expand | deployed via the airbag passage formed by opening each door panel. 図20のY−Y線断面図であって、エアバッグ通過口を通過するエアバッグが、該エアバッグ通過口の隅角部に近接して膨張展開することを示している。FIG. 21 is a cross-sectional view taken along line YY in FIG. 20, showing that the airbag passing through the airbag passage opening is inflated and deployed in the vicinity of the corner of the airbag passage opening.

符号の説明Explanation of symbols

12 基材
20 エアバッグ装置
24 エアバッグ
30 矩形状筒体(矩形状の筒体)
32(32A,32B,32C,32D) ドアパネル
34A 中央破断予定部
34B 側方破断予定部
36 ヒンジ部
38(38A,38B,38C,38D) 内部隅角部
40 エアバッグ通過口
42A,42B,42C,42D 隅角部
50 規制部
52 傾斜面
DESCRIPTION OF SYMBOLS 12 Base material 20 Airbag apparatus 24 Airbag 30 Rectangular cylinder ( rectangular cylinder )
32 (32A, 32B, 32C, 32D) Door panel 34 A Center breakage planned part
34B Side fracture planned part
36 Hinge part 38 (38A, 38B, 38C, 38D) Internal corner part 40 Airbag passage opening
42A, 42B, 42C, 42D Corner portion 50 Restricting portion 52 Inclined surface

Claims (3)

車両内装部材を構成する基材(12)に配設されてエアバッグ装置(20)に連結され、4つの内部隅角部(42A,42B,42C,42D)を有する矩形状筒体(30)と、この筒体(30)の前記基材(12)側に一体的に設けられ、該筒体(30)の中央に位置する中央破断予定部(34A)および該中央破断予定部(34A)の両端から該筒体(30)の内部隅角部(38/38A,38B,38C,38D)まで斜めに延在する側方破断予定部(34B)の破断により4枚に分割可能なドアパネル(32/32A/32B/32C/32D)とを備え分割した前記各ドアパネル(34A/34B/34C/34D)が筒体(30)に沿うヒンジ部(36)を中心として前記基材(12)の外方へ開放することで、前記筒体(30)の内側に前記エアバッグ(24)の展開を許容する矩形のエアバッグ通過口(40)を形成するエアバッグドアにおいて、
前記筒体(30)の前記内部隅角部(38/38A,38B,38C,38D)に設けられ、前記エアバッグ装置(20)側から前記エアバッグ通過口(40)に近づくに従い該エアバッグ通過口(40)の中央側へ傾斜する傾斜面(52)を有した規制部(50)を備え、
前記傾斜面(52)における前記エアバッグ通過口(40)側の端部が、エアバッグ通過口(40)の各隅角部(42A/42B/42C/42D)より該エアバッグ通過口(40)の中央側に位置する
ことを特徴とするエアバッグドア。
Disposed on a substrate (12) constituting a vehicle interior member is coupled to an air bag device (20), rectangular cylindrical body having four internal corners (42A, 42B, 42C, 42D) (30 ), And a central fracture planned portion (34A) and a central fracture planned portion (34A) that are integrally provided on the base (12) side of the cylindrical body (30) and are located at the center of the cylindrical body (30). ) Door panel that can be divided into four by breaking the side break scheduled portion (34B) that extends obliquely from both ends of the cylinder (30) to the internal corners (38 / 38A, 38B, 38C, 38D) of the cylinder (30) (32 / 32A / 32B / 32C / 32D), and each of the divided door panels (34A / 34B / 34C / 34D) is centered on a hinge portion (36) along the cylindrical body (30). In the airbag door that forms a rectangular airbag passage opening (40) that allows the airbag (24) to be deployed inside the cylindrical body (30) by opening outwardly )
Provided at the internal corners (38 / 38A, 38B, 38C, 38D) of the cylindrical body (30), the airbag as it approaches the airbag passage opening (40) from the airbag device (20) side A regulation part (50) having an inclined surface (52) inclined toward the center side of the passage opening (40) ,
The end of the inclined surface (52) on the side of the airbag passing port (40) is connected to the airbag passing port (40A) from each corner (42A / 42B / 42C / 42D) of the airbag passing port (40). ) Located in the center of the airbag door.
前記傾斜面(52)は、筒体(30)の前記内部隅角部(38/38A,38B,38C,38D)を挟んで隣接する内壁面間において、該内部隅角部(38/38A,38B,38C,38D)側へ凹んだ凹曲面状または該筒体(30)の内方へ突出した凸曲面状に形成された請求項1記載のエアバッグドア。 The inclined surface (52) is disposed between the inner wall surfaces (38 / 38A, 38C, 38D) of the cylindrical body (30) with the inner corner portions (38 / 38A, The airbag door according to claim 1, wherein the airbag door is formed in a concave curved surface shape recessed toward the side of 38B, 38C, 38D) or a convex curved surface shape projecting inwardly of the cylindrical body (30) . 前記規制部(50)は、前記筒体(30)における4つの内部隅角部(38/38A,38B,38C,38D)において、少なくとも乗員席側に隣接する2つの内部隅角部(38A,38B)に設けられる請求項1または2記載のエアバッグドア。 The restricting portion (50) includes at least two internal corner portions (38A) adjacent to the passenger seat side in the four internal corner portions (38 / 38A, 38B, 38C, 38D) of the cylindrical body (30). , 38B). The airbag door according to claim 1 or 2.
JP2004244410A 2004-08-24 2004-08-24 Airbag door Expired - Lifetime JP4478829B2 (en)

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DE102007058794A1 (en) * 2007-12-06 2009-06-10 GM Global Technology Operations, Inc., Detroit Automatic automotive airbag system is located under hinged flaps whose hinge line is at an acute angle to vehicle longitudinal plane
JP2010120443A (en) 2008-11-18 2010-06-03 Toyota Motor Corp Front passenger airbag device
JP5215246B2 (en) * 2009-06-19 2013-06-19 本田技研工業株式会社 Bag cover for airbag device
JP7041314B1 (en) * 2021-08-16 2022-03-23 マレリ株式会社 Airbag mounting structure

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