JP2006117023A - Airbag door and molding method thereof - Google Patents

Airbag door and molding method thereof Download PDF

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JP2006117023A
JP2006117023A JP2004304816A JP2004304816A JP2006117023A JP 2006117023 A JP2006117023 A JP 2006117023A JP 2004304816 A JP2004304816 A JP 2004304816A JP 2004304816 A JP2004304816 A JP 2004304816A JP 2006117023 A JP2006117023 A JP 2006117023A
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base material
back side
skin
elastic layer
door
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JP4575746B2 (en
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Hiroshi Suzuki
浩 鈴木
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Inoac Corp
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Inoue MTP KK
Inoac Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To enable slit machining on the basis of a laser machining technology to a skin. <P>SOLUTION: On an outside profile part of a door panel 20, a base material pressing portion 54 with required width projecting from an outer surface 12A of a base material 12 is provided. By the existence of the base material pressing portion 54, on a back side elastic layer 32 of the skin 14 stuck to the base material 12, a back side compressed portion 56 wherein a bubble structure is crushed and air is eliminated is formed along an extending line of a breakage estimated portion 22 to have the required width. The breakage estimated portion 22 is formed by a slit 24 penetrating the back side compressed portion 56 from the back side of the base material pressing portion 54 or reaching the inside of the back side compressed portion 56. The slit 24 can be molded on the basis of the later machining technology. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、エアバッグドアおよびその成形方法に関し、更に詳細には、車両内装部材を構成する基材に設けられ、破断予定部を外部輪郭に沿って延設させたドアパネルに、気泡構造の裏側弾力層を有する表皮を貼着したエアバッグドアと、このエアバッグドアを成形する方法に関するものである。   The present invention relates to an airbag door and a method for forming the airbag door, and more particularly, to a door panel provided on a base material constituting a vehicle interior member and having a planned fracture portion extending along an external contour, and a back side of a bubble structure. The present invention relates to an airbag door to which a skin having an elastic layer is attached, and a method for molding the airbag door.

近年生産される殆どの乗用車には、対向車や障害物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。ここで助手席用のエアバッグ装置は、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の内部に、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。このため図６に例示するように、インストルメントパネル１０を構成する所要形状の合成樹脂製の基材１２には、図示しないエアバッグ装置のインフレータケースに対応する位置に、このエアバッグ装置の作動時に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 a driver airbag system and a passenger airbag system as one of the devices for protecting passengers in the event of a collision with an oncoming vehicle or an obstacle. Equipped. Here, the airbag device for the passenger seat is mounted inside the instrument panel, which is a vehicle interior member assembled in front of the passenger compartment, so as not to be seen from the passenger seat. For this reason, as illustrated in FIG. 6, the synthetic resin base material 12 constituting the instrument panel 10 has an operation of the airbag device at a position corresponding to an inflator case of the airbag device (not shown). An airbag door AD1 is provided that is sometimes opened.

このエアバッグドアＡＤ１は、(ａ)基材１２に一体的に形成されて該基材１２の一部として構成されるドアパネルから構成されるタイプ(基材一体タイプ)と、(ｂ)基材１２と別体に形成されて該基材１２に組付けられるドアパネルから構成されるタイプ(基材別体タイプ)とに大別され、図６では前述した(ａ)の基材一体タイプを例示している。このような基材一体タイプのエアバッグドアＡＤ１は、エアバッグの押圧力を受けた際の破損防止等を図るため、オレフィン系の熱可塑性エラストマ(ＴＰＯ)等の柔軟性に富んだ樹脂素材からなるドア補強部材１６を、例えば振動溶着技術に基づいてドアパネル２０の裏側に接合してある。ここで図示のエアバッグドアＡＤ１は、図６および図７に例示するように、基材１２に略日字形の破断予定部２２を延設することで２枚のドアパネル２０,２０に分割される両開きタイプであって、エアバッグの押圧力を受けた両ドアパネル２０,２０は、破断予定部２２での破断により基材１２から分離すると共に相互に分割した後、ドア補強部材１６に支持されながらインストルメントパネル１０の前後方向へ開放するようになる。   The airbag door AD1 includes (a) a type (base material integrated type) configured by a door panel formed integrally with the base material 12 and configured as a part of the base material 12, and (b) a base material. 12 is divided into a type composed of a door panel formed separately from 12 and assembled to the base material 12 (base material separate type). FIG. 6 illustrates the above-described base material integrated type (a). is doing. Such a base-integrated airbag door AD1 is made of a resin material having a high flexibility such as an olefin-based thermoplastic elastomer (TPO) in order to prevent damage when the airbag is pressed. The door reinforcing member 16 is joined to the back side of the door panel 20 based on, for example, a vibration welding technique. The airbag door AD1 shown here is divided into two door panels 20 and 20 by extending a base portion 12 with a plan-shaped fracture portion 22 as illustrated in FIGS. Both door panels 20, 20 that are double-opening type and have received the pressing force of the airbag are separated from the base material 12 by breaking at the planned breaking portion 22 and are separated from each other, and then supported by the door reinforcing member 16. The instrument panel 10 is opened in the front-rear direction.

また前述したインストルメントパネル１０は、その構造から分類すると、(ａ)基材のみから構成されて該基材が露出した単層構造タイプ、(ｂ)基材の外面に表皮を貼り込んだ表皮貼着タイプ、(ｃ)基材と、表皮と、これらの間で発泡成形された発泡体とからなる発泡成形タイプ、等に大別され、図６は前述した(ｂ)の表皮貼着タイプである。このような表皮貼着タイプの表皮１４は、ＴＰＯ等を材質とするシート状の表側意匠層３０と、ポリエチレンフォームまたはポリプロピレンフォーム等からなり該表側意匠層３０の裏側にラミネートされた裏側弾力層３２とからなる２層構造を呈しており、表側意匠層３０が意匠面を構成して質感向上を図ると共に、裏側弾力層３２が有する弾力性により触感向上を図るようになっている。そして表皮１４は、基材１２の外面１２ＡからエアバッグドアＡＤ１の各ドアパネル２０の外面２０Ａに亘って貼着されており、インストルメントパネル１０の外方から該エアバッグドアＡＤ１は全く視認されないようになっている。   The above-described instrument panel 10 is classified by its structure: (a) a single-layer structure type in which only the base material is exposed and the base material is exposed; and (b) an epidermis in which an outer skin is pasted on the outer surface of the base material. Adhesion type, (c) Broadly divided into foam molding type composed of base material, skin, and foam molded between them, etc. FIG. 6 is the skin adhesion type of (b) described above. It is. Such a skin sticking type skin 14 includes a sheet-like front side design layer 30 made of TPO or the like, and a back side elastic layer 32 made of polyethylene foam or polypropylene foam and laminated on the back side of the front side design layer 30. The front side design layer 30 constitutes a design surface to improve the texture, and the tactile sensation is improved by the elasticity of the back side elastic layer 32. The skin 14 is adhered from the outer surface 12A of the base 12 to the outer surface 20A of each door panel 20 of the airbag door AD1, so that the airbag door AD1 is not visible at all from the outside of the instrument panel 10. It has become.

図８は、真空成形型４０を利用して前述した表皮貼着タイプのインストルメントパネル１０を成形する工程を、単純な形状で概略的に示した工程説明図である。すなわち、基材１２に対する表皮１４の貼着(貼り込み)は真空成形型４０を使用して実施され、先ず型開きした真空成形型４０の第１成形型４２に、所要形状に予備成形した基材１２をセットする(図８(ａ))。次いで、ホルダ５０で保持したシート状の表皮１４を、別工程で予め加熱してから第１成形型４２の上方へ到来させ、その後に図示しない吸引装置により複数の吸気孔４８から空気を吸引する空気吸引状態とした第２成形型４４を、表皮１４を挟み込みながら第１成形型４２へ型閉めする(図８(ｂ))。これにより表皮１４は、第２成形型４４の成形面４４Ａに吸着されて所定形状に成形されながら、裏側弾力層３２を基材１２の外面１２ＡおよびエアバッグドアＡＤ１のドアパネル２０の外面２０Ａに密着した状態でこれら基材１２およびエアバッグドアＡＤ１に貼り込まれる(図８(ｃ))。そして、真空成形型４０による表皮１４の貼込み工程が完了し、脱型した後に該表皮１４の不要部分をトリミングすることで、表皮貼着タイプでエアバッグドアＡＤ１を設けたインストルメントパネル１０が成形される(図８(ｄ))。このような外面に表皮を貼着した構成のエアバッグドアは、例えば特許文献１に開示されている。
特開２０００−１８５６１６号公報 FIG. 8 is a process explanatory view schematically showing the process of forming the above-described skin-attached instrument panel 10 using the vacuum forming mold 40 in a simple shape. That is, the skin 14 is attached (attached) to the base material 12 using the vacuum forming die 40, and the first forming die 42 of the vacuum forming die 40 that is first opened is preliminarily formed into a required shape. The material 12 is set (FIG. 8A). Next, the sheet-like skin 14 held by the holder 50 is preheated in a separate process, and then arrives above the first mold 42, and then air is sucked from the plurality of intake holes 48 by a suction device (not shown). The second molding die 44 in the air suction state is closed to the first molding die 42 while sandwiching the skin 14 (FIG. 8B). As a result, the outer skin 14 is adhered to the outer surface 12A of the base 12 and the outer surface 20A of the door panel 20 of the airbag door AD1 while being adsorbed to the molding surface 44A of the second molding die 44 and molded into a predetermined shape. In this state, the base material 12 and the airbag door AD1 are attached (FIG. 8C). Then, after the step of attaching the skin 14 by the vacuum forming die 40 is completed and the mold is removed, an unnecessary portion of the skin 14 is trimmed so that the instrument panel 10 provided with the airbag door AD1 is provided with the skin attachment type. Molded (FIG. 8 (d)). An airbag door having a configuration in which an outer skin is attached to such an outer surface is disclosed in Patent Document 1, for example.
JP 2000-185616 A

ところで、表皮貼着タイプのインストルメントパネル１０に設けたエアバッグドアＡＤ１では、図９(ａ)に略示するように、基材１２の外面１２Ａに貼り込まれた表皮１４がドアパネル２０の外面２０Ａに亘って貼着されるようになるが、裏側弾力層３２は部分的に多少の差異はあるものの、夫々の外面１２Ａ,２０Ａに対して殆ど圧縮されることなく貼り込まれる(図９(ｂ))。すなわち、破断予定部２２となるドアパネル２０の外部輪郭に対応した部位にあっても、気泡構造を呈する裏側弾力層３２は殆ど圧縮されていないため、その内部には空気が存在した状態となっている。   By the way, in airbag door AD1 provided in the instrument panel 10 of the skin adhesion type, the skin 14 affixed on the outer surface 12A of the base material 12 is the outer surface of the door panel 20, as schematically shown in FIG. The back side elastic layer 32 is attached to each of the outer surfaces 12A and 20A with almost no compression (see FIG. 9). b)). That is, even in the portion corresponding to the outer contour of the door panel 20 that is the planned breaking portion 22, the back side elastic layer 32 exhibiting the bubble structure is hardly compressed, so that air exists in the inside. Yes.

このため表皮１４の貼込みが完了した後に、ドアパネル２０の外部輪郭に沿って破断予定部２２を延設するに際し、図１０に例示するように、レーザー加工技術に基づいて基材１２の裏側から裏側弾力層３２を貫通するスリット２４を形成する場合、該裏側弾力層３２および表側意匠層３０に焦げや焼けが発生する不都合があった。これは、裏側弾力層３２の内部に空気(酸素)が残存しているためと推測される。このため、場合によっては表側意匠層３０の外面にまで焦げが広がることもあり、インストルメントパネル１０の品質低下および製品不良を招来することとなっていた。   For this reason, after the pasting of the skin 14 is completed, when extending the planned fracture portion 22 along the external contour of the door panel 20, as illustrated in FIG. 10, from the back side of the base material 12 based on the laser processing technique. When the slit 24 penetrating the back side elastic layer 32 is formed, there is a disadvantage that the back side elastic layer 32 and the front side design layer 30 are burnt or burnt. This is presumably because air (oxygen) remains in the back elastic layer 32. For this reason, in some cases, the burn may spread to the outer surface of the front side design layer 30, leading to deterioration in quality of the instrument panel 10 and product defects.

従って、表皮貼着タイプのインストルメントパネル１０に設けたエアバッグドアＡＤ１では、ドアパネル２０の外部輪郭に沿ってレーザー加工技術によりスリット２４を形成する場合、実際には図１１に例示するように基材１２だけに該スリット２４を形成していた。すなわち、表皮１４にはスリット２４による切り込みが全く形成されていないため、各ドアパネル２０の開放時に該表皮１４の破断が起こり難くなっており、破断にエアバッグの膨張エネルギーが多く消費される不都合があった。   Accordingly, in the airbag door AD1 provided on the skin-attached instrument panel 10, when the slit 24 is formed by the laser processing technique along the external contour of the door panel 20, as shown in FIG. The slit 24 was formed only in the material 12. That is, since the cuts by the slits 24 are not formed at all in the skin 14, the skin 14 is hardly broken when each door panel 20 is opened, and there is an inconvenience that a large amount of inflation energy of the airbag is consumed for the break. there were.

そこで本発明では、裏側弾力層を有する表皮を貼着した車両内装部材に設けた場合でも、表皮に対してレーザー加工技術に基づいたスリット加工を可能としたエアバッグドアと、このエアバッグドアを成形する方法を提供することを目的とする。   Therefore, in the present invention, an airbag door that enables slit processing based on laser processing technology on the skin even when provided on a vehicle interior member to which a skin having a back elastic layer is attached, and the airbag door It aims at providing the method of shape | molding.

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設けられ、破断予定部を外部輪郭に沿って延設させたドアパネルに、気泡構造の裏側弾力層を有する表皮を貼着したエアバッグドアにおいて、
前記裏側弾力層に、気泡構造が押し潰された裏側圧縮部を、前記破断予定部の延設ラインに沿って所要幅で形成したことを特徴とする。 In order to solve the above problems and achieve the intended purpose, the present invention provides:
In an airbag door provided on a base material that constitutes a vehicle interior member, and a door panel in which a portion to be broken is extended along an external contour, and an epidermis having a back side elastic layer of a bubble structure is attached,
A back side compression portion in which a bubble structure is crushed is formed in the back side elastic layer with a required width along an extension line of the planned fracture portion.

同じく前記課題を解決し、所期の目的を達成するため別の発明は、
車両内装部材を構成する基材に設けられ、破断予定部を外部輪郭に沿って延設させたドアパネルに、気泡構造の裏側弾力層を有する表皮を貼着したエアバッグドアの成形方法であって、
前記ドアパネルの外部輪郭部分に、前記基材の外面から突出した所要幅の基材押圧部を設け、
前記基材および表皮をセットした成形型を型閉めして、前記裏側弾力層を前記外面へ密着させながら表皮を基材へ貼着すると共に、前記基材押圧部を該裏側弾力層へ突入させ、
前記裏側弾力層における前記基材押圧部との圧接部位に、気泡構造が押し潰された裏側圧縮部を、前記破断予定部の延設ラインに沿って形成するようにしたことを特徴とする。 In order to solve the same problem and achieve the intended purpose, another invention is as follows.
A method for molding an airbag door in which a skin having a back side elastic layer of a bubble structure is attached to a door panel provided on a base material constituting a vehicle interior member and extending a planned fracture portion along an external contour. ,
In the outer contour portion of the door panel, a base material pressing portion having a required width protruding from the outer surface of the base material is provided,
The mold with the base material and the skin set is closed, and the skin is adhered to the base material while the back side elastic layer is in close contact with the outer surface, and the base material pressing portion is allowed to enter the back side elastic layer. ,
A back side compression part in which a cell structure is crushed is formed along a line extending from the planned fracture part at a pressure contact portion with the base material pressing part in the back side elastic layer.

本発明に係るエアバッグドアによれば、ドアパネルの外部輪郭に沿って延設される破断予定部を、基材押圧部の裏側から裏側弾力層の裏側圧縮部を貫通または該裏側圧縮部内に到達する深さのスリットにより形成してあるため、エアバッグの作動によりドアパネルが開放するに際して該表皮の破断が円滑かつ確実に発現される利点がある。従って、表皮の破断に消費されるエアバッグの膨張エネルギーを最小限に抑えることができると共に、ドアパネルの円滑な開放を実現し得る等の有益な効果を奏する。   According to the airbag door according to the present invention, the part to be broken that extends along the external contour of the door panel penetrates the back side compression part of the back side elastic layer from the back side of the base material pressing part or reaches the back side compression part. Therefore, when the door panel is opened by the operation of the airbag, the skin is ruptured smoothly and reliably. Therefore, it is possible to minimize the inflation energy of the airbag consumed for rupture of the skin, and to achieve a beneficial effect such as being able to realize a smooth opening of the door panel.

また、別の発明に係るエアバッグドアの成形方法によれば、基材の外面からドアパネルの外面に亘って表皮を貼着するに際し、ドアパネルの外部輪郭に一致する破断予定部の延設ラインに沿って裏側弾力層に対して裏側圧縮部を形成するようにしたため、破断予定部を設けるための該表皮に対するスリット加工をレーザー加工技術に基づいて行なうことを可能とする利点がある。これにより、エアバッグドアの開放に際して表皮の破断を確実に発現させることができ、該表皮の破断に消費されるエアバッグの膨張エネルギーを最小限に抑えることができる等の有益な効果を奏する。   Further, according to the method for molding an airbag door according to another invention, when the skin is pasted from the outer surface of the base material to the outer surface of the door panel, the extended line of the planned fracture portion that matches the outer contour of the door panel Since the back-side compression portion is formed along the back-side elastic layer along the slit, there is an advantage that slit processing for the skin for providing the planned fracture portion can be performed based on a laser processing technique. Thereby, when the air bag door is opened, the skin can be surely ruptured, and beneficial effects such as minimizing the inflation energy of the air bag consumed for the rupture of the skin can be obtained.

次に、本発明に係るエアバッグドアおよびその成形方法につき、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 airbag door and the molding method thereof according to the present invention will be described below with reference to the accompanying drawings by giving a preferred embodiment.

図１は、好適実施例に係るエアバッグドアの構造を示したインストルメントパネルの側断面図であり、図２は、基材および表皮を剥離させた状態で示した部分斜視図である。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に設けられ、破断予定部２２を外部輪郭に沿って延設させたドアパネル２０に、気泡構造の裏側弾力層３２を有する表皮を貼着して構成されるものが前提とされる。すなわち、基材１２の外面１２Ａに貼着される複層(２層)構造の表皮１４を、基材１２の一部をなすエアバッグドアＡＤのドアパネル２０の外面２０Ａに貼着した構成となっている。   FIG. 1 is a side sectional view of an instrument panel showing a structure of an airbag door according to a preferred embodiment, and FIG. 2 is a partial perspective view showing a base material and an outer skin peeled off. The airbag door AD of the present embodiment is provided on a base material 12 constituting an instrument panel 10 that is a vehicle interior member, and has a bubble structure on a door panel 20 in which a planned fracture portion 22 extends along an external contour. It is assumed that the cover is composed by attaching a skin having the back side elastic layer 32. In other words, the skin 14 having a multilayer (two-layer) structure that is adhered to the outer surface 12A of the substrate 12 is adhered to the outer surface 20A of the door panel 20 of the airbag door AD that forms part of the substrate 12. ing.

なお本願が対象とするエアバッグドアは、１枚のドアパネルからなる片開きタイプ、２枚のドアパネルからなる両開きタイプ、４枚のドアパネルからなる四方開きタイプ等、種々タイプが対象とされる。そこで後述する実施例では、２枚のドアパネル２０,２０からなる両開きタイプのエアバッグドアＡＤを設けた場合につき説明する。従って、図６〜図１１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。   In addition, the airbag door which this application makes object is various types, such as the single opening type which consists of one door panel, the double opening type which consists of two door panels, and the four-way opening type which consists of four door panels. Therefore, in an embodiment described later, a case will be described in which a double-opening type airbag door AD composed of two door panels 20 and 20 is provided. Therefore, the same members / parts as those already described in the section of the prior art described with reference to FIGS.

基材１２は、ポリエチレン(ＰＥ)やポリプロピレン(ＰＰ)等に適宜強化剤を添加したオレフィン系樹脂素材を、例えば図示しないインジェクション成形型を利用したインジェクション成形技術に基づいて形成した大型の合成樹脂成形部材である。そして助手席側において、図示しないエアバッグ装置のインフレータケースに対応する位置に、２枚のドアパネル２０,２０からなるエアバッグドアＡＤが、基材１２に一体的に形成されている。すなわちエアバッグドアＡＤは、基材１２の成形時に同時に成形されたものであり、開放前においては該基材１２の一部分を構成している。   The base material 12 is a large synthetic resin molding formed from an olefin-based resin material in which a reinforcing agent is appropriately added to polyethylene (PE), polypropylene (PP) or the like, for example, based on an injection molding technique using an injection molding die (not shown). It is a member. On the passenger seat side, an airbag door AD including two door panels 20 and 20 is formed integrally with the base material 12 at a position corresponding to an inflator case of an airbag apparatus (not shown). That is, the airbag door AD is formed at the same time as the base material 12 is formed, and constitutes a part of the base material 12 before opening.

表皮１４は、基本的には図７等に例示した従来の表皮１４と同一のものであって、ＴＰＯ等を材質とするシート状の表側意匠層３０と、ポリエチレンフォームまたはポリプロピレンフォーム等からなり該表側意匠層３０の裏側にラミネートされた裏側弾力層３２とからなる２層構造を呈している。表側意匠層３０は、厚みＨ１が０.５〜１ｍｍ程度とされて柔軟性や耐候性に優れており、その外面には適宜のシボ模様等が付与されていてインストルメントパネル１０の質感向上を図るようになっている。また裏側弾力層３２は、通常状態での厚みＨ２が２〜３ｍｍ程度とされた発泡倍率１５〜２５程度の連通気泡(連泡)構造を呈しており、外力が加わると内部に存在する空気が押し出されて排除されるため、気泡構造が押し潰されて圧縮的に変形するようになっている。なお、気泡構造が完全に押し潰された圧縮状態での厚みＨ３は０.５ｍｍ程度となる。   The skin 14 is basically the same as the conventional skin 14 illustrated in FIG. 7 and the like, and is composed of a sheet-like surface side design layer 30 made of TPO or the like and a polyethylene foam or polypropylene foam. It has a two-layer structure including a back side elastic layer 32 laminated on the back side of the front side design layer 30. The front side design layer 30 has a thickness H1 of about 0.5 to 1 mm and is excellent in flexibility and weather resistance, and an appropriate texture pattern or the like is given to the outer surface thereof to improve the texture of the instrument panel 10. It is designed to be illustrated. Further, the back elastic layer 32 has an open cell (open cell) structure with a foaming ratio of about 15 to 25 in which the thickness H2 in a normal state is about 2 to 3 mm. Since it is pushed out and eliminated, the bubble structure is crushed and deformed compressively. Note that the thickness H3 in a compressed state in which the bubble structure is completely crushed is about 0.5 mm.

そして、前述した２層構造の表皮１４をり込むことを前提とした本実施例のエアバッグドアＡＤでは、図１および図２に例示したように、該エアバッグドアＡＤを構成する両ドアパネル２０,２０の外部輪郭部分に、基材１２の外面１２Ａから所要の突出高さＳでかつ所要の突出幅Ｗに突出した基材押圧部５４を設けてある。これにより、基材１２に貼り込んだ当該表皮１４の裏側弾力層３２に、気泡構造が押し潰されて空気が排除された裏側圧縮部５６を、ドアパネル２０,２０の外部輪郭(破断予定部２２の延設ライン)に沿って所要幅で形成した構成としたことを特徴としている。   In the airbag door AD of the present embodiment on the premise that the above-described two-layer structure skin 14 is inserted, as shown in FIGS. 1 and 2, both door panels 20 constituting the airbag door AD are provided. , 20 is provided with a base material pressing portion 54 that protrudes from the outer surface 12A of the base material 12 to the required protrusion height S and the required protrusion width W. As a result, the back-side compression portion 56 in which the air bubble structure is crushed and the air is excluded is formed on the back-side elastic layer 32 of the skin 14 attached to the base material 12, and the outer contour of the door panels 20, 20 (scheduled fracture portion 22 It is characterized in that it has a structure formed with a required width along the extended line.

基材１２の外面に突設した基材押圧部５４は、該基材１２の成形時に一体的に形成されたもので、実施例の両開きタイプでは平面視で略日字形を呈しており、その突出高さＳは、図４(ａ)に例示するように、裏側弾力層３２の厚みＨ２より若干小さく設定されている。換言すると、基材押圧部５４の突出高さＳは、基材１２の外面１２Ａからドアパネル２０,２０に亘って表皮１４が貼着された際に、この基材押圧部５４が突入した部位では裏側弾力層３２が完全に圧縮されて空気を完全に排除させ得る高さに設定されている。ここで裏側弾力層３２が、通常状態での厚みＨ２＝２.５ｍｍ、圧縮状態での厚みＨ３が０.５ｍｍである場合には、Ｈ２−Ｈ３＝２.０ｍｍとなるため、基材押圧部５４の突出高さＳを２.０ｍｍと設定すれば、該基材押圧部５４の突入により形成された裏側圧縮部５６は、最大限に圧縮されて空気が完全に排除された状態となる。なお、基材押圧部５４の突出幅Ｗは、５〜１０ｍｍ程度とするのが望ましい。   The base material pressing portion 54 projecting from the outer surface of the base material 12 is integrally formed when the base material 12 is molded. In the double-opening type of the embodiment, the base pressing portion 54 has a substantially letter shape in plan view. The protrusion height S is set to be slightly smaller than the thickness H2 of the back side elastic layer 32 as illustrated in FIG. In other words, the protrusion height S of the substrate pressing portion 54 is such that the substrate pressing portion 54 enters when the skin 14 is pasted from the outer surface 12A of the substrate 12 to the door panels 20 and 20. The back elastic layer 32 is set to a height at which the air can be completely compressed to completely exclude air. Here, when the back elastic layer 32 has a thickness H2 = 2.5 mm in a normal state and a thickness H3 in a compressed state is 0.5 mm, H2−H3 = 2.0 mm. If the projection height S of 54 is set to 2.0 mm, the back side compression portion 56 formed by the entry of the base material pressing portion 54 is compressed to the maximum and the air is completely excluded. In addition, as for the protrusion width W of the base-material press part 54, it is desirable to set it as about 5-10 mm.

従って本実施例のエアバッグドアＡＤでは、図４(ｂ)に例示するように、基材１２に貼着された表皮１４の裏側弾力層３２が、各ドアパネル２０,２０の外部輪郭以外の部分では通常状態の厚みＨ２と同程度の厚みを有しており、前述した基材押圧部５４に対応した(各ドアパネル２０,２０の外部輪郭に対応した)裏側圧縮部５６では圧縮状態の厚みＨ３となっている。但し、インストルメントパネル１０の外面に露出した表側意匠層３０は、図６に例示した従来と同一となっているため、該インストルメントパネル１０の外観的な形状および形態は何等変化していない。   Therefore, in the airbag door AD of the present embodiment, as illustrated in FIG. 4B, the back side elastic layer 32 of the skin 14 adhered to the base 12 is a portion other than the outer contour of each door panel 20, 20. Has a thickness comparable to the thickness H2 in the normal state, and the compressed portion 56 has a thickness H3 in the compressed state corresponding to the base material pressing portion 54 (corresponding to the outer contour of each door panel 20, 20). It has become. However, since the front side design layer 30 exposed on the outer surface of the instrument panel 10 is the same as the conventional example illustrated in FIG. 6, the external shape and form of the instrument panel 10 are not changed at all.

このように構成された本実施例のエアバッグドアＡＤでは、各ドアパネル２０,２０の外部輪郭に沿って延設される破断予定部２２を、基材押圧部５４の裏側から裏側弾力層３２の裏側圧縮部５６を貫通または該裏側圧縮部５６内に到達する深さのスリット２４により形成されている。このため、エアバッグの作動によりドアパネル２０,２０が開放するに際して該表皮１４の破断が円滑かつ確実に発現されるようになる。従って、表皮１４の破断に消費されるエアバッグの膨張エネルギーを最小限に抑えることができると共に、ドアパネル２０の円滑な開放を実現し得る。しかも、表皮１４に対するスリット２４の形成には、従来から実施されているレーザー加工技術を好適に実施することが可能である。なお、本願が規定する「スリット」は、溝形態のものや穴形態のものを全て包含する。   In the airbag door AD of the present embodiment configured as described above, the planned fracture portion 22 extending along the outer contour of each door panel 20, 20 is formed from the back side of the substrate pressing portion 54 to the back side elastic layer 32. It is formed by a slit 24 having a depth that penetrates the back side compression portion 56 or reaches the inside of the back side compression portion 56. For this reason, when the door panels 20 and 20 are opened by the operation of the air bag, the skin 14 is ruptured smoothly and reliably. Therefore, the inflation energy of the airbag consumed for breaking the skin 14 can be minimized, and the door panel 20 can be smoothly opened. In addition, the conventional laser processing technique can be suitably implemented for forming the slits 24 on the skin 14. The “slit” defined by the present application includes all those in the form of grooves and holes.

次に、前述した本実施例のエアバッグドアの成形方法につき説明する。本実施例のエアバッグドアＡＤは、図３に概略的な形状で例示した真空成形型４０を利用して成形される。   Next, a method for forming the airbag door of the above-described embodiment will be described. The airbag door AD of the present embodiment is formed using the vacuum forming die 40 illustrated as a schematic shape in FIG.

先ず、基材１２に設けられるエアバッグドアＡＤの各ドアパネル２０,２０の外部輪郭部分に、該基材１２の外面１２Ａから突出高さＳに突出した突出幅Ｗの基材押圧部５４を設ける。この基材押圧部５４は、図示しないインジェクション成形型の成形面形状を変更することにより、基材１２をインジェクション成形するに際して該基材１２に一体的に突設される。   First, a base material pressing portion 54 having a protrusion width W protruding from the outer surface 12A of the base material 12 to a protrusion height S is provided on the outer contour portion of each door panel 20, 20 of the airbag door AD provided on the base material 12. . The base material pressing portion 54 is integrally protruded from the base material 12 when the base material 12 is injection-molded by changing the molding surface shape of an injection molding die (not shown).

このように基材押圧部５４を一体的に設けた所要形状の基材１２を、型開きした真空成形型４０の第１成形型４２にセットする(図３(ａ))。次いで、ホルダ５０で保持したシート状の表皮１４を、別工程で予め加熱してから第１成形型４２の上方へ到来させ、その後に図示しない吸引装置により複数の吸気孔４８から空気を吸引する空気吸引状態とした第２成形型４４を、表皮１４を挟み込みながら第１成形型４２へ型閉めする(図３(ｂ)、図４(ａ))。これにより表皮１４を、第２成形型４４の成形面４４Ａに吸着させて所定形状に成形しながら、裏側弾力層３２を基材１２の外面１２ＡおよびエアバッグドアＡＤのドアパネル２０の外面２０Ａに密着させた状態で該基材１２およびエアバッグドアＡＤに貼り込む(図３(ｃ)、図４(ｂ))。   In this way, the base material 12 having the required shape integrally provided with the base material pressing portion 54 is set in the first molding die 42 of the vacuum forming die 40 that has been opened (FIG. 3A). Next, the sheet-like skin 14 held by the holder 50 is preheated in a separate process, and then arrives above the first mold 42, and then air is sucked from the plurality of intake holes 48 by a suction device (not shown). The second molding die 44 in the air suction state is closed to the first molding die 42 with the skin 14 being sandwiched (FIGS. 3B and 4A). Thus, the back side elastic layer 32 is closely attached to the outer surface 12A of the base 12 and the outer surface 20A of the door panel 20 of the airbag door AD while adhering the outer skin 14 to the molding surface 44A of the second molding die 44 and forming it into a predetermined shape. In this state, the base material 12 and the airbag door AD are pasted (FIGS. 3 (c) and 4 (b)).

この際に、基材１２の外面１２Ａから突出した基材押圧部５４が、これに対応した裏側弾力層３２の部位へ突入するようになる。従って、裏側弾力層３２における基材押圧部５４との圧接部位だけに、気泡構造が押し潰されて空気が排除された裏側圧縮部５６を、破断予定部２２の延設ライン(ドアパネル２０,２０の外部輪郭部分)に沿って形成することができる。   At this time, the base material pressing portion 54 protruding from the outer surface 12A of the base material 12 enters the portion of the back side elastic layer 32 corresponding thereto. Therefore, the back side compression part 56 in which the air bubble structure is crushed and the air is excluded is only connected to the pressure contact part of the back side elastic layer 32 with the base material pressing part 54. The outer contour portion of the outer peripheral portion).

そして、真空成形型４０による表皮１４の貼込み工程が完了し、脱型した後に該表皮１４の不要部分をトリミングすることで、表皮貼着タイプでエアバッグドアＡＤを設けたインストルメントパネル１０が成形される(図３(ｄ))。   Then, after the step of attaching the skin 14 by the vacuum forming die 40 is completed and the mold is removed, an unnecessary portion of the skin 14 is trimmed, so that the instrument panel 10 provided with the airbag door AD of the skin attachment type is provided. Molded (FIG. 3 (d)).

次いで、図５に例示したように、図示しないレーザー照射装置によるレーザー加工技術に基づき、基材押圧部５４の裏側から裏側圧縮部５６を貫通または該裏側圧縮部５６内に到達するスリット２４を、各ドアパネル２０,２０の外部輪郭に沿って形成すれば、該ドアパネル２０,２０の外部輪郭に沿った破断予定部２２が設けられる。この際に、スリット２４が形成される部位では、空気が完全に排除された裏側圧縮部５６が対応的に位置しているため、裏側弾力層３２は勿論、表側意匠層３０に焦げや焼け等が発生することが好適に防止される。   Next, as illustrated in FIG. 5, the slit 24 that penetrates the back side compression part 56 from the back side of the base material pressing part 54 or reaches the inside of the back side compression part 56 based on a laser processing technique by a laser irradiation device (not shown), If it forms along the external outline of each door panel 20 and 20, the fracture | rupture scheduled part 22 along the external outline of this door panel 20 and 20 will be provided. At this time, since the back side compression portion 56 from which air has been completely removed is correspondingly positioned at the portion where the slit 24 is formed, the back side elastic layer 32 as well as the front side design layer 30 is burned, burned, etc. Is preferably prevented from occurring.

このように、本実施例のエアバッグドアの成形方法では、基材１２の外面１２Ａからドアパネル２０の外面２０Ａに亘って表皮１４を貼り込むに際し、両ドアパネル２０,２０の外部輪郭に一致する破断予定部２２の延設ラインに沿って裏側弾力層３２に対して裏側圧縮部５６を形成するようにしたため、該破断予定部２２を設けるための該表皮１４に対するスリット加工をレーザー加工技術に基づいて行なうことを可能とする。これにより、エアバッグドアＡＤの開放に際して表皮１４の破断を確実に発現させることができ、該表皮１４の破断に消費されるエアバッグの膨張エネルギーを最小限に抑えることができる。   As described above, in the method for molding an airbag door according to the present embodiment, when the skin 14 is pasted from the outer surface 12A of the base 12 to the outer surface 20A of the door panel 20, the fracture matches the outer contours of the door panels 20 and 20. Since the back side compression part 56 is formed with respect to the back side elastic layer 32 along the extended line of the planned part 22, the slit processing for the skin 14 for providing the planned fracture part 22 is performed based on the laser processing technique. Make it possible to do. Thereby, when the airbag door AD is opened, the rupture of the skin 14 can be surely expressed, and the inflation energy of the airbag consumed for the rupture of the skin 14 can be minimized.

なお前述した実施例では、基材押圧部５４を、基材１２の外面１２Ａから所要量に突出した形態のものを例示したが、この基材押圧部５４は突出形態のものに限定されず、例えば外面１２Ａと同一平面形態または逆に凹溝形態のものでもよい。すなわちこの場合には、基材１２へ表皮１４を貼り込むに際し、少なくともドアパネル２０の外部輪郭に沿う部位に対応した表皮１４の部分を、第２成形型４４の型面で表側意匠層３０の外側から押圧するようにすれば、裏側弾力層３２に裏側圧縮部５６を形成することが可能とある。但しこの場合、表皮１４の外面には、破断予定部２２に沿った凹溝またはドアパネル２０の形状と略同一の凹部が形成されることとなる。   In the above-described embodiment, the base material pressing portion 54 is illustrated in a form that protrudes from the outer surface 12A of the base material 12 to a required amount, but the base material pressing portion 54 is not limited to the protruding shape, For example, it may be in the same plane form as the outer surface 12A or conversely in the form of a concave groove. That is, in this case, when attaching the skin 14 to the base material 12, at least a portion of the skin 14 corresponding to a portion along the external contour of the door panel 20 is outside the front side design layer 30 with the mold surface of the second molding die 44. By pressing from the back side, it is possible to form the back side compression part 56 in the back side elastic layer 32. However, in this case, the outer surface of the skin 14 is formed with a concave groove along the planned fracture portion 22 or a concave portion substantially the same as the shape of the door panel 20.

なお、前述した基材押圧部５４は、基材１２に一体的に形成したものだけでなく、該基材１２とは別体に枠体状に形成した後に、ドアパネル２０の外部輪郭に沿って取付けるように構成したものでもよい。   The base material pressing portion 54 described above is not only formed integrally with the base material 12, but is formed in a frame shape separately from the base material 12, and then along the external contour of the door panel 20. It may be configured to be attached.

また、本発明に係るエアバッグドアは、前述した２枚のドアパネルから構成される両開きタイプのものだけでなく、４枚のドアパネルからなる四方開きタイプや、１枚のドアパネルからなる片開きタイプにも好適に実施可能である。   In addition, the airbag door according to the present invention is not limited to the double door type that includes the two door panels described above, but also includes a four-way open type that includes four door panels and a single door type that includes one door panel. Can also be suitably implemented.

更に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１０に設けたものに限定されるものではなく、これ以外にフロントドアの内装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 in the instrument panel 10, and other than this, the airbag door attached to the side airbag device provided in the interior panel of the front door, In addition, airbag doors attached to curtain airbag devices provided on pillar garnishes and roof side panels (roof panels) are also targeted.

本発明に係るエアバッグドアおよびその成形方法は、車両内装部材を構成する基材に設けられ、破断予定部を外部輪郭に沿って延設させたドアパネルに、気泡構造の裏側弾力層を有する表皮を貼り込んだものが対象とされ、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。   An airbag door and a molding method thereof according to the present invention are provided on a base material that constitutes a vehicle interior member, and a skin having a back side elastic layer of a bubble structure on a door panel in which a planned fracture portion is extended along an external contour. Can be suitably applied to various automobiles equipped with an airbag device.

好適実施例に係るエアバッグドアの構造を示したインストルメントパネルの側断面図である。It is side sectional drawing of the instrument panel which showed the structure of the airbag door which concerns on a suitable Example. 基材および表皮を剥離させた状態で示した部分斜視図である。It is the fragmentary perspective view shown in the state which peeled the base material and the outer skin. 本実施例のエアバッグドアを設けたインストルメントパネルの表皮貼込工程を概略的な形状で示した工程説明図であって、(ａ)は、真空成形型の第１成形型に基材をセットする状態を示し、(ｂ)は、シート状の表皮を挟んで第２成形型を第１成形型へ型閉めする状態を示し、(ｃ)は、真空成形型の型閉めにより表皮を成形すると同時に基材へ貼り込んだ状態を示し、(ｄ)は、表皮の不要部分をトリミングすることでインストルメントパネルの成形が完了した状態を示している。It is process explanatory drawing which showed the skin sticking process of the instrument panel provided with the airbag door of a present Example in schematic shape, Comprising: (a) is a base material to the 1st shaping | molding die of a vacuum forming die. (B) shows the state in which the second mold is closed to the first mold with the sheet-shaped skin sandwiched therebetween, and (c) shows the skin being molded by closing the vacuum mold. At the same time, it shows a state of being attached to the base material, and (d) shows a state in which the molding of the instrument panel is completed by trimming unnecessary portions of the skin. 真空成形型により表皮を基材に貼り込む状態を示した説明断面図であって、(ａ)は、表皮が貼り込まれる直前の状態を示し、(ｂ)は、表皮の貼り込まれて裏側弾力層に裏側圧縮部が形成された状態を示している。It is explanatory sectional drawing which showed the state which affixes a skin to a base material with a vacuum forming die, Comprising: (a) shows the state just before a skin is affixed, (b) is a back side by which a skin is affixed The state in which the back side compression part was formed in the elastic layer is shown. レーザー加工技術に基づき、表皮の裏側弾力層まで貫通するスリットを、ドアパネルの外部輪郭に沿って形成することで破断予定部を設け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 provided the fracture | rupture plan part by forming the slit which penetrates to the back side elastic layer of an outer skin along the external outline of a door panel based on a laser processing technique. 従来のエアバッグドアの構造を示したインストルメントパネルの側断面図である。It is side sectional drawing of the instrument panel which showed the structure of the conventional airbag door. 基材および表皮を剥離させた状態で示した部分斜視図である。It is the fragmentary perspective view shown in the state which peeled the base material and the outer skin. 従来のエアバッグドアを設けたインストルメントパネルの表皮貼込工程を概略的な形状で示した工程説明図であって、(ａ)は、真空成形型の第１成形型に基材をセットする状態を示し、(ｂ)は、シート状の表皮を挟んで第２成形型を第１成形型へ型閉めする状態を示し、(ｃ)は、真空成形型の型閉めにより表皮を成形すると同時に基材へ貼り込んだ状態を示し、(ｄ)は、表皮の不要部分をトリミングすることでインストルメントパネルの成形が完了した状態を示している。It is process explanatory drawing which showed the epidermis sticking process of the instrument panel which provided the conventional airbag door in schematic shape, Comprising: (a) sets a base material to the 1st shaping | molding die of a vacuum forming die. (B) shows a state in which the second molding die is closed to the first molding die with the sheet-like skin sandwiched therebetween, and (c) shows that the skin is molded by closing the vacuum molding die. The state where it was affixed to the base material is shown, and (d) shows the state where the molding of the instrument panel is completed by trimming unnecessary portions of the skin. 真空成形型により表皮を基材に貼り込む状態を示した説明断面図であって、(ａ)は、表皮が貼り込まれる直前の状態を示し、(ｂ)は、表皮の貼り込まれた状態を示している。It is explanatory sectional drawing which showed the state which affixes a skin to a base material with a vacuum forming die, Comprising: (a) shows the state just before a skin is affixed, (b) is the state where a skin was affixed Is shown. レーザー加工技術に基づき、表皮の裏側弾力層まで貫通するスリットを、ドアパネルの外部輪郭に沿って形成した場合、該表皮に焦げや焼けが発生する不都合を示した説明断面図である。It is explanatory sectional drawing which showed the inconvenience which a burn and a burn generate | occur | produce in this skin, when the slit which penetrates to the back side elastic layer of a skin is formed along the external outline of a door panel based on a laser processing technique. 表皮に発生する不都合を回避するため、基材のみにスリットを形成して破断予定部を設けたことを示した説明断面図である。In order to avoid the inconvenience which generate | occur | produces in an outer_skin | epidermis, it is explanatory sectional drawing which showed that the slit was formed only in the base material and the fracture | rupture planned part was provided.

符号の説明Explanation of symbols

１２ 基材
１２Ａ 外面
１４ 表皮
２０ ドアパネル
２２ 破断予定部
２４ スリット
３２ 裏側弾力層
４０ 真空成形型(成形型)
５４ 基材押圧部
５６ 裏側圧縮部
Ｈ２ 厚み(裏側弾力層３２の)
Ｓ 突出高さ(基材突出部５４の)
DESCRIPTION OF SYMBOLS 12 Base material 12A Outer surface 14 Skin 20 Door panel 22 Planned fracture part 24 Slit 32 Back side elastic layer 40 Vacuum molding die (molding die)
54 Base material pressing part 56 Back side compression part H2 thickness (on the back side elastic layer 32)
S Projection height (base material projection part 54)

Claims (7)

車両内装部材を構成する基材(12)に設けられ、破断予定部(22)を外部輪郭に沿って延設させたドアパネル(20)に、気泡構造の裏側弾力層(32)を有する表皮(14)を貼着したエアバッグドアにおいて、
前記裏側弾力層(32)に、気泡構造が押し潰された裏側圧縮部(56)を、前記破断予定部(22)の延設ラインに沿って所要幅で形成した
ことを特徴とするエアバッグドア。 A skin having a back side elastic layer (32) of a bubble structure on a door panel (20) provided on a base material (12) constituting a vehicle interior member and extending a planned fracture portion (22) along an external contour ( 14) At the airbag door
An air bag characterized in that a back side compression portion (56) in which a bubble structure is crushed is formed in the back side elastic layer (32) with a required width along an extension line of the planned breaking portion (22). door. 前記ドアパネル(20)の外部輪郭部分に、前記基材(12)の外面(12A)から突出した所要幅の基材押圧部(54)を設け、
前記基材(12)に貼着した表皮(14)の裏側弾力層(32)に、前記基材押圧部(54)との圧接により前記裏側圧縮部(56)を形成した請求項１記載のエアバッグドア。 In the outer contour portion of the door panel (20), a base material pressing portion (54) having a required width protruding from the outer surface (12A) of the base material (12) is provided,
The said back side compression part (56) was formed in the back side elastic layer (32) of the skin (14) stuck to the said base material (12) by the press-contact with the said base material press part (54). Airbag door. 前記基材押圧部(54)の突出高さ(S)は、前記裏側弾力層(32)の厚み(H2)より小さく設定されている請求項２記載のエアバッグドア。   The airbag door according to claim 2, wherein the protrusion height (S) of the base material pressing portion (54) is set smaller than the thickness (H2) of the back elastic layer (32). 前記破断予定部(22)は、前記基材押圧部(54)の裏側から前記裏側圧縮部(56)を貫通または該裏側圧縮部(56)内に到達するスリット(24)により形成される請求項１〜３の何れかに記載のエアバッグドア。   The planned fracture portion (22) is formed by a slit (24) penetrating the back side compression portion (56) from the back side of the substrate pressing portion (54) or reaching the back side compression portion (56). Item 4. The airbag door according to any one of Items 1 to 3. 前記裏側弾力層(32)は、ポリエチレンフォームまたはポリプロピレンフォーム等から形成されている請求項１〜４の何れかに記載のエアバッグドア。   The airbag door according to any one of claims 1 to 4, wherein the back elastic layer (32) is formed of polyethylene foam or polypropylene foam. 車両内装部材を構成する基材(12)に設けられ、破断予定部(22)を外部輪郭に沿って延設させたドアパネル(20)に、気泡構造の裏側弾力層(32)を有する表皮(14)を貼着したエアバッグドアの成形方法であって、
前記ドアパネル(20)の外部輪郭部分に、前記基材(12)の外面(12A)から突出した所要幅の基材押圧部(54)を設け、
前記基材(12)および表皮(14)をセットした成形型(40)を型閉めして、前記裏側弾力層(32)を前記外面(12A)へ密着させながら表皮(14)を基材(12)へ貼着すると共に、前記基材押圧部(54)を該裏側弾力層(32)へ突入させ、
前記裏側弾力層(32)における前記基材押圧部(54)との圧接部位に、気泡構造が押し潰された裏側圧縮部(56)を、前記破断予定部(22)の延設ラインに沿って形成するようにした
ことを特徴とするエアバッグドアの成形方法。 A skin having a back side elastic layer (32) of a bubble structure on a door panel (20) provided on a base material (12) constituting a vehicle interior member and extending a planned fracture portion (22) along an external contour ( 14) is a method for forming an airbag door to which
In the outer contour portion of the door panel (20), a base material pressing portion (54) having a required width protruding from the outer surface (12A) of the base material (12) is provided,
The mold (40) in which the substrate (12) and the skin (14) are set is closed, and the skin (14) is adhered to the substrate (14) while keeping the back elastic layer (32) in close contact with the outer surface (12A). 12) and sticking to the base pressing portion (54) into the back elastic layer (32),
A back side compression part (56) in which a bubble structure is crushed at a pressure contact part with the base material pressing part (54) in the back side elastic layer (32), along an extended line of the planned fracture part (22) A method for forming an airbag door, characterized in that the airbag door is formed. レーザー加工技術に基づき、前記基材押圧部(54)の裏側から前記裏側圧縮部(56)を貫通または該裏側圧縮部(56)内に到達するスリット(24)を形成し、前記破断予定部(22)を設けるようにした請求項６記載のエアバッグドアの成形方法。
Based on the laser processing technology, forming a slit (24) that penetrates or reaches the back side compression portion (56) from the back side of the base material pressing portion (54), and the portion to be broken The method for forming an airbag door according to claim 6, wherein (22) is provided.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011842A1 (en) * 2007-03-12 2008-09-18 GM Global Technology Operations, Inc., Detroit Non-visible airbag door, apparatus and method of making the same
JP2010089699A (en) * 2008-10-10 2010-04-22 Kanto Auto Works Ltd Instrument panel with airbag door part
WO2015146203A1 (en) * 2014-03-28 2015-10-01 本田技研工業株式会社 Molded resin article and process for producing same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09131785A (en) * 1995-11-10 1997-05-20 Honda Motor Co Ltd Vacuum forming method
JPH11334490A (en) * 1998-05-21 1999-12-07 Inoac Corporation:Kk Vehicular interior material having air bag door part and manufacture of it

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09131785A (en) * 1995-11-10 1997-05-20 Honda Motor Co Ltd Vacuum forming method
JPH11334490A (en) * 1998-05-21 1999-12-07 Inoac Corporation:Kk Vehicular interior material having air bag door part and manufacture of it

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007011842A1 (en) * 2007-03-12 2008-09-18 GM Global Technology Operations, Inc., Detroit Non-visible airbag door, apparatus and method of making the same
JP2010089699A (en) * 2008-10-10 2010-04-22 Kanto Auto Works Ltd Instrument panel with airbag door part
WO2015146203A1 (en) * 2014-03-28 2015-10-01 本田技研工業株式会社 Molded resin article and process for producing same
JPWO2015146203A1 (en) * 2014-03-28 2017-04-13 本田技研工業株式会社 Resin molded product and manufacturing method thereof

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