JP6557593B2

JP6557593B2 - Retainer

Info

Publication number: JP6557593B2
Application number: JP2015246800A
Authority: JP
Inventors: 一康前田
Original assignee: Inoac Corp
Current assignee: Inoac Corp
Priority date: 2015-12-17
Filing date: 2015-12-17
Publication date: 2019-08-07
Anticipated expiration: 2035-12-17
Also published as: JP2017109661A

Description

この発明は、エアバッグドアを支持すると共にインフレータケースと組み合わせられるリテーナに関するものである。 The present invention relates to a retainer that supports an airbag door and is combined with an inflator case.

図７に示すように、車両の乗員室１６前方に設置される車両内装部材であるインストルメントパネル１０の裏側には、乗員の保護を図るためのエアバッグ装置２０が設けられている(例えば特許文献１参照)。エアバッグ装置２０は、インストルメントパネル１０の裏側に設置されるインフレータケース２２に収容されたインフレータにより膨張するエアバッグ２６が、インストルメントパネル１０のエアバッグドア２８を破断して押し開いて、乗員室１６内に展開するようになっている。そして、インストルメントパネル１０には、エアバッグドア２８およびエアバッグドア２８の周辺を支持するリテーナ３０が取り付けられ、エアバッグ装置２０の作動時にエアバッグドア２８等が飛散しないように補強されている。 As shown in FIG. 7, an airbag device 20 is provided on the back side of the instrument panel 10 that is a vehicle interior member installed in front of the passenger compartment 16 of the vehicle (for example, a patent). Reference 1). The airbag device 20 is configured such that an airbag 26 inflated by an inflator housed in an inflator case 22 installed on the back side of the instrument panel 10 breaks and pushes open an airbag door 28 of the instrument panel 10 to It expands in the chamber 16. The instrument panel 10 is attached with an airbag door 28 and a retainer 30 that supports the periphery of the airbag door 28 and is reinforced so that the airbag door 28 and the like are not scattered when the airbag device 20 is operated. .

前記リテーナ３０は、角筒状に形成された一方の開口縁をインストルメントパネル１０に固定して、エアバッグドア２８の周辺を支持するリテーナ本体３２と、このリテーナ本体３２の開口内側に設けられ、エアバッグドア２８の裏側に固定されたドア支持部３４とを備えている。また、リテーナ３０の内側には、折り畳まれたエアバッグ２６およびインフレータケース２２が配置される。インフレータケース２２とリテーナ３０とは、展開するエアバッグ２６に押されたインストルメントパネル１０に伴ってリテーナ３０が浮き上がることでエアバッグドア２８の開きが悪くならないように、インフレータケース２２の前後に設けられた鉤状の取付片２４が、リテーナ本体３２の前後の壁部に形成された取付開口３６に引っ掛かるように互いに組み付けられる。より具体的には、リテーナ３０におけるリテーナ本体３２の下方開口からインフレータケース２２をリテーナ本体３２の内側へ挿入し、リテーナ本体３２の内側から取付開口３６に取付片２４を通す。そして、取付開口３６からリテーナ本体３２の外側に出て取付開口３６の開口縁に重なる取付片２４の先端と、取付開口３６の開口縁との掛かりにより、リテーナ３０がインフレータケース２２から外れないようになっている。また、取付開口３６は、下方へ折れ曲がった取付片２４の先端をリテーナ本体３２の内側から通すために、上下の開口幅が、取付片２４の先端の上下寸法以上になるように設定される。 The retainer 30 is provided on one side of the opening formed in the shape of a rectangular tube to the instrument panel 10 and supports the periphery of the airbag door 28, and the retainer body 32 is provided inside the opening of the retainer body 32. And a door support portion 34 fixed to the back side of the airbag door 28. Further, the folded airbag 26 and the inflator case 22 are disposed inside the retainer 30. The inflator case 22 and the retainer 30 are provided in front of and behind the inflator case 22 so that the opening of the airbag door 28 does not deteriorate due to the retainer 30 being lifted by the instrument panel 10 pushed by the airbag 26 to be deployed. The hook-shaped attachment pieces 24 thus assembled are assembled to each other so as to be caught in attachment openings 36 formed in the front and rear wall portions of the retainer main body 32. More specifically, the inflator case 22 is inserted into the retainer main body 32 from the lower opening of the retainer main body 32 in the retainer 30, and the mounting piece 24 is passed from the inner side of the retainer main body 32 to the mounting opening 36. Then, the retainer 30 does not come off the inflator case 22 due to the engagement between the tip of the attachment piece 24 that goes out of the retainer main body 32 from the attachment opening 36 and overlaps the opening edge of the attachment opening 36 and the opening edge of the attachment opening 36. It has become. Further, the mounting opening 36 is set so that the upper and lower opening widths are equal to or larger than the vertical dimension of the tip of the mounting piece 24 in order to pass the tip of the mounting piece 24 bent downward from the inside of the retainer body 32.

特開２００９−２４８６１０号公報JP 2009-248610 A

図７に示すように、インフレータケース２２は、インストルメントパネル１０に固定されたリテーナ４０に取付片２４を介して組み付けられると共に、リインフォースバー３８に取付具を介して固定されている。このため、インストルメントパネル１０またはリテーナ３０がインフレータケース２２に対して相対的に下がった位置に設置されると、取付片２４の先端と取付開口３６の開口縁との掛かり代(重なり幅)が小さくなって、リテーナ３０がインフレータケース２２から外れ易くなるおそれがある(図７(ａ)参照)。また、膨張するエアバッグ２６によりリテーナ３０の前または後の壁部が押されて変形して取付片２４が取付開口３６から外れると、リテーナ３０とインフレータケース２２との隙間に向けてエアバッグ２６が膨張するように逃げてしまい、エアバッグドア２８を円滑に開放することができない。更に、取付片２４の先端の上下寸法を大きく設定しても、これに伴って取付片２４を通すために取付開口３６の開口幅も大きくなる。このため、取付片２４を挿入した取付開口３６にできる大きな隙間によって取付片２４の配置ずれ(遊び)が生じ易くなり、結果として取付片２４の先端と取付開口３６の開口縁との掛かり代が小さくなってしまう。 As shown in FIG. 7, the inflator case 22 is assembled to a retainer 40 fixed to the instrument panel 10 via an attachment piece 24 and is fixed to the reinforcement bar 38 via an attachment. For this reason, when the instrument panel 10 or the retainer 30 is installed at a position relatively lowered with respect to the inflator case 22, an allowance (overlap width) between the tip of the attachment piece 24 and the opening edge of the attachment opening 36 is increased. There is a possibility that the retainer 30 may be easily detached from the inflator case 22 (see FIG. 7A). Further, when the front or rear wall portion of the retainer 30 is pushed and deformed by the inflating airbag 26 and is deformed so that the attachment piece 24 is removed from the attachment opening 36, the airbag 26 is directed toward the gap between the retainer 30 and the inflator case 22. The air bag door 28 cannot be opened smoothly. Furthermore, even if the vertical dimension of the tip of the mounting piece 24 is set large, the opening width of the mounting opening 36 is increased in order to pass the mounting piece 24 accordingly. For this reason, it is easy to cause displacement (play) of the mounting piece 24 due to a large gap formed in the mounting opening 36 into which the mounting piece 24 is inserted, and as a result, a margin between the tip of the mounting piece 24 and the opening edge of the mounting opening 36 is increased. It gets smaller.

すなわち本発明は、従来の技術に係る前記問題に鑑み、これらを好適に解決するべく提案されたものであって、インフレータケースから外れ難くしたリテーナを提供することを目的とする。 That is, the present invention has been proposed in view of the above-described problems related to the prior art, and it is an object of the present invention to provide a retainer that is not easily detached from the inflator case.

前記課題を克服し、所期の目的を達成するため、本願の請求項１に係る発明のリテーナは、
エアバッグにより開放されるエアバッグドアを支持すると共に、エアバッグを膨張するためのインフレータが設けられたインフレータケースと組み合わせられるリテーナであって、
前記インフレータケースに設けられた鉤状の取付片を挿通可能な取付開口が、壁部を貫通して形成され、取付開口に通した取付片と該取付開口の開口縁との引っ掛かりにより、インフレータケースに対する相対的な移動が規制されるリテーナ本体と、
前記取付開口が設けられた壁部における前記エアバッグドアと反対側の縁に、インテグラルヒンジを介して設けられ、該インテグラルヒンジで折り曲げる姿勢変位により、前記取付開口を開放した状態から、前記取付片が通された取付開口に嵌め込み可能な保持部とを備えたことを要旨とする。
請求項１に係る発明によれば、インテグラルヒンジで折り曲げる姿勢変位により、取付開口を開放した状態から保持部を取付片が挿入された取付開口に嵌め込むことで、保持部によって取付片が挿入された取付開口の隙間を小さくすることができる。これにより、取付開口と取付片との関係が位置ずれすることを防止できると共に、取付開口の開口縁に対する取付片の掛かり代を確保して、取付片からリテーナ本体が外れることを防止することができる。また、エアバッグの膨張時に壁部に内側から力が加わった際に、取付片から壁部が外れることを防止することができる。更に、保持部は、取付開口を開放した状態にできるので、取付開口にインフレータケースの取付片を挿入する際に邪魔にならない。 In order to overcome the above-mentioned problems and achieve the intended object, the retainer of the invention according to claim 1 of the present application provides:
A retainer that supports an airbag door opened by an airbag and is combined with an inflator case provided with an inflator for inflating the airbag,
The inflator case is provided with an attachment opening through which the hook-like attachment piece provided in the inflator case can be inserted, penetrating the wall portion, and being caught by the attachment piece passed through the attachment opening and the opening edge of the attachment opening. A retainer body whose relative movement is restricted,
From the state where the mounting opening is opened by an attitude hinge that is provided via an integral hinge at the edge opposite to the airbag door in the wall portion provided with the mounting opening, and is bent by the integral hinge. The gist of the present invention is to provide a holding portion that can be fitted into the mounting opening through which the mounting piece is passed.
According to the first aspect of the present invention, the mounting piece is inserted by the holding portion by fitting the holding portion into the mounting opening in which the mounting piece is inserted from the state in which the mounting opening is opened by the posture displacement that is bent by the integral hinge. It is possible to reduce the gap between the mounting openings. As a result, it is possible to prevent the positional relationship between the mounting opening and the mounting piece from being displaced, and to secure an allowance for the mounting piece with respect to the opening edge of the mounting opening, thereby preventing the retainer body from being detached from the mounting piece. it can. Further, it is possible to prevent the wall portion from being detached from the mounting piece when a force is applied to the wall portion from the inside during the inflation of the airbag. Furthermore, since the holding portion can be in a state where the attachment opening is opened, it does not get in the way when the attachment piece of the inflator case is inserted into the attachment opening.

請求項２に係る発明では、前記保持部は、前記取付開口に嵌め込まれて該取付開口の開口縁に掛かる嵌入部を備えたことを要旨とする。
請求項２に係る発明によれば、保持部は、取付開口の開口縁に掛かる嵌入部により取付開口に嵌め込んだ状態を保つことができるので、取付片を取付開口からより外れ難くすることができる。 The gist of the invention according to claim 2 is that the holding portion includes a fitting portion that is fitted into the attachment opening and is hooked on an opening edge of the attachment opening.
According to the second aspect of the present invention, since the holding portion can maintain the state of being fitted into the attachment opening by the fitting portion that hangs on the opening edge of the attachment opening, it is possible to make the attachment piece more difficult to be detached from the attachment opening. it can.

請求項３に係る発明では、前記保持部には、複数の前記嵌入部が設けられ、個々の嵌入部が対応した取付開口にそれぞれ嵌まることを要旨とする。
請求項３に係る発明によれば、１つの保持部に複数の嵌入部が設けられているので、保持部の姿勢変位に伴って複数の取付開口に対応の嵌入部を嵌め込むことができる。 The gist of the invention according to claim 3 is that the holding portion is provided with a plurality of the fitting portions, and each fitting portion is fitted into a corresponding mounting opening.
According to the third aspect of the present invention, since the plurality of fitting portions are provided in one holding portion, the fitting portions corresponding to the plurality of mounting openings can be fitted with the posture displacement of the holding portion.

請求項４に係る発明では、前記保持部は、前記取付開口に嵌め込んだ際に、前記リテーナ本体の壁部との間に、前記取付片において取付開口から外方へ延出する掛止部を挟むように構成されたことを要旨とする。
請求項４に係る発明によれば、保持部を取付開口に嵌め込んだ際に、リテーナ本体の壁部との間に、取付片において取付開口から外方へ延出する掛止部を挟む構成とすることで、取付片を位置規制することができる。 In the invention which concerns on Claim 4, when the said holding | maintenance part is engage | inserted in the said attachment opening, between the wall parts of the said retainer main body, the latching part extended outward from an attachment opening in the said attachment piece The gist is that it is configured to sandwich
According to the fourth aspect of the present invention, when the holding portion is fitted into the mounting opening, the latching portion extending outward from the mounting opening is sandwiched between the retaining piece and the wall portion of the retainer body. By doing so, the position of the mounting piece can be regulated.

請求項５に係る発明では、前記取付開口は、前記取付片において該取付開口の貫通方向に延びる挿通部から折れ曲がって前記壁部に沿うように延びる掛止部が挿通可能に形成され、
前記保持部は、前記挿通部が貫いた前記取付開口に嵌め込んだ際に、該取付開口に残る前記掛止部の挿通部からの延出方向の隙間が、該掛止部の挿通部からの延出寸法よりも小さくなるように構成されたことを要旨とする。
請求項５に係る発明によれば、取付開口の開口幅を取付片が無理なく挿入できるように設定しても、取付片の挿通部が通る取付開口に嵌まった保持部によって、取付開口に残る隙間を、取付片の掛止部が通らないようにすることができる。これにより、取付片からリテーナ本体をより外れ難くすることができる。 In the invention according to claim 5, the attachment opening is formed so that a latching portion that is bent from an insertion portion that extends in the penetration direction of the attachment opening in the attachment piece and extends along the wall portion can be inserted.
When the holding portion is fitted into the attachment opening through which the insertion portion penetrates, the gap in the extending direction from the insertion portion of the latching portion remaining in the attachment opening is separated from the insertion portion of the latching portion. The gist of the present invention is that it is configured to be smaller than the extension dimension.
According to the invention according to claim 5, even if the opening width of the mounting opening is set so that the mounting piece can be inserted without difficulty, the holding portion fitted into the mounting opening through which the insertion portion of the mounting piece passes allows It is possible to prevent the retaining portion of the mounting piece from passing through the remaining gap. Thereby, a retainer main body can be made harder to remove | deviate from an attachment piece.

本発明に係るリテーナによれば、エアバッグの膨張時などにインフレータケースから外れ難くすることができる。 According to the retainer according to the present invention, it is possible to prevent the retainer from coming off the inflator case when the airbag is inflated.

本発明の好適な実施例に係るリテーナを示す概略斜視図であって、(ａ)は保持部が成形姿勢にあり、(ｂ)は保持部が保持姿勢にある。It is a schematic perspective view which shows the retainer which concerns on the suitable Example of this invention, Comprising: (a) is a holding | maintenance part in a shaping | molding attitude | position, (b) is a holding | maintenance part in a holding | maintenance attitude | position. 実施例のリテーナを示す側面図であって、(ａ)は保持部が成形姿勢にあり、(ｂ)は保持部が保持姿勢にある。It is a side view which shows the retainer of an Example, Comprising: (a) is a holding | maintenance part in a shaping | molding attitude | position, (b) is a holding | maintenance part in a holding | maintenance attitude | position. 実施例のリテーナを示す底面図である。It is a bottom view which shows the retainer of an Example. 実施例のリテーナを破断して示す端面図であって、保持部が成形姿勢にある。It is an end view which fractures and shows the retainer of an example, Comprising: A holding part is in a forming posture. 実施例のリテーナを破断して示す端面図であって、保持部が保持姿勢にある。It is an end view which fractures and shows a retainer of an example, and a maintenance part is in a maintenance posture. (ａ)はインストルメントパネルの基材、実施例のリテーナおよびインフレータケースを分解した状態で示す概略斜視図であり、(ｂ)はインストルメントパネルの基材、実施例のリテーナおよびインフレータケースを組み付けた状態で示す概略斜視図である。(a) is a schematic perspective view showing the instrument panel base material, the retainer of the embodiment and the inflator case in an exploded state, and (b) is an assembly of the instrument panel base material, the retainer of the embodiment and the inflator case. It is a schematic perspective view shown in the state. 従来のリテーナを破断して示す端面図であって、(ａ)はインフレータケースとリテーナとが位置ずれした状況を示し、(ｂ)はエアバッグの膨張時にインフレータケースからリテーナが外れた状況を示す。It is the end view which fractures and shows the conventional retainer, (a) shows the situation where the inflator case and the retainer shifted, and (b) shows the situation where the retainer removed from the inflator case at the time of inflation. .

次に、本発明に係るリテーナにつき、好適な実施例を挙げて、添付図面を参照して以下に説明する。なお、以下の説明において、車両への取付状態を基準として、リテーナの前後左右上下を指称する。 Next, a preferred embodiment of the retainer according to the present invention will be described below with reference to the accompanying drawings. In the following description, front, rear, left, right, upper, and lower sides of the retainer are referred to based on the state of attachment to the vehicle.

図４および図５に示すように、実施例に係るリテーナ４０は、インストルメントパネル１０において、エアバッグ装置２０の作動時にエアバッグドア２８となる部分の裏側に設置されている。また、リテーナ４０は、インフレータケース２２と組み合わせられ、エアバッグ２６の展開時にインフレータケース２２に係合することで、浮き上がりが規制される。リテーナ４０としては、オレフィン系の熱可塑性エラストマー(ＴＰＯ)等から成形した成形品を好適に用いることができ、実施例では、インジェクション成形等の型成形により後述する各部(リテーナ本体４２,ドア支持部４４および保持部５８)が一体的に形成されている。実施例のインストルメントパネル１０は、剛性を担う基材１２と、この基材１２の表側を覆う表層材１４とからなる複層構造であり、表層材１４は、表皮の裏側にウレタン等の発泡体が設けられたものである。また、エアバッグドア２８は、インストルメントパネル１０に設けられていることを表側(乗員室１６)から認識できない所謂インビジブルタイプである。リテーナ４０の内側には、エアバッグ２６を膨張させるインフレータが設けられたインフレータケース２２が配置されると共に、インフレータケース２２およびエアバッグドア２８の間に、折り畳まれたエアバッグ２６が収納される。エアバッグ装置２０は、基材１２に開設されたエアバッグ開口１２ａ(図６参照)にリテーナ４０を嵌め合わせて、エアバッグ２６の膨張によりリテーナ４０の表側を覆う表層材１４がエアバッグドア２８として破断して開放するよう構成される。 As shown in FIGS. 4 and 5, the retainer 40 according to the embodiment is installed on the instrument panel 10 on the back side of the portion that becomes the airbag door 28 when the airbag apparatus 20 is operated. Further, the retainer 40 is combined with the inflator case 22 and is engaged with the inflator case 22 when the airbag 26 is deployed, so that the lift is restricted. As the retainer 40, a molded product formed from an olefin-based thermoplastic elastomer (TPO) or the like can be suitably used. In the embodiment, each part (retainer main body 42, door support part) which will be described later is formed by molding such as injection molding. 44 and the holding portion 58) are integrally formed. The instrument panel 10 according to the embodiment has a multi-layer structure including a base material 12 that bears rigidity and a surface layer material 14 that covers the front side of the base material 12, and the surface layer material 14 is foamed urethane or the like on the back side of the skin. The body is provided. Further, the airbag door 28 is a so-called invisible type that cannot be recognized from the front side (the passenger compartment 16) that it is provided on the instrument panel 10. An inflator case 22 provided with an inflator for inflating the airbag 26 is disposed inside the retainer 40, and the folded airbag 26 is accommodated between the inflator case 22 and the airbag door 28. In the airbag device 20, the retainer 40 is fitted into the airbag opening 12 a (see FIG. 6) opened in the base 12, and the surface layer material 14 that covers the front side of the retainer 40 by the inflation of the airbag 26 is the airbag door 28. It is configured to break and open.

図６に示すように、インフレータケース２２は、例えば金属製の箱状体であり、車両前側および車両後側の側面のそれぞれに、鉤状の取付片２４が設けられている。インフレータケース２２は、取付具を介してリインフォースバー３８に固定されると共に、取付片２４を介してリテーナ４０と組み合わせられる。取付片２４は、インフレータケース２２の側面から該側面と直交するように延出し、後述の取付開口５６の貫通方向へ延びる挿通部２４ａを有している。また、取付片２４は、挿通部２４ａの延出端からエアバッグドア２８と反対側へインフレータケース２２の側面に沿うように折れ曲がり、後述のリテーナ本体４２の壁部４６,４７に沿うように延びる掛止部２４ｂを備え、側面視略「Ｌ」字状に形成されている(図４および図５参照)。 As shown in FIG. 6, the inflator case 22 is, for example, a metal box-like body, and a hook-shaped attachment piece 24 is provided on each of the front side surface and the rear side surface of the vehicle. The inflator case 22 is fixed to the reinforcement bar 38 via a fixture and is combined with the retainer 40 via a fixture piece 24. The attachment piece 24 has an insertion portion 24a that extends from the side surface of the inflator case 22 so as to be orthogonal to the side surface, and extends in a penetration direction of an attachment opening 56 described later. The mounting piece 24 is bent from the extending end of the insertion portion 24a to the side opposite to the airbag door 28 along the side surface of the inflator case 22, and extends along walls 46 and 47 of the retainer main body 42 described later. The latching portion 24b is provided and is formed in a substantially “L” shape in a side view (see FIGS. 4 and 5).

図１〜図３に示すように、リテーナ４０は、一縁がインストルメントパネル１０に接合されて、エアバッグドア２８の周辺を支持するリテーナ本体４２と、リテーナ本体４２におけるエアバッグドア２８側に設けられ、エアバッグドア２８を裏側から支持するドア支持部４４とを備えている。リテーナ本体４２は、エアバッグドア２８が設けられたインストルメントパネル１０と交差するように延在する壁部４６,４７,４８,４８と、壁部４６,４７,４８,４８の上端縁(エアバッグドア２８側の端縁)に、外方へ延出するように形成されたフランジ部５０を備えている。実施例のリテーナ本体４２は、前後左右の壁部４６,４７,４８,４８が角環状に連なる筒状体であり、対向する壁部４６,４７,４８,４８の間に、折り畳まれたエアバッグ３６およびインフレータケース２２が配置されるスペースが設けられている。フランジ部５０は、リテーナ本体４２の全周に亘って形成され、基材１２におけるエアバッグ開口１２ａの開口縁に重なると共に、エアバッグドア２８の周辺を構成する表層材１４と接合される。前後の壁部４６,４７は、上から下に向かうにつれて車両前側に傾くように延在しており、上部開口がフロントガラス１８側ではなく乗員室１６側に指向するようにリテーナ本体４２が傾いている。 As shown in FIGS. 1 to 3, the retainer 40 is joined to the instrument panel 10 at one edge, and the retainer body 42 that supports the periphery of the airbag door 28, and the retainer body 42 on the airbag door 28 side. And a door support portion 44 that supports the airbag door 28 from the back side. The retainer main body 42 includes wall portions 46, 47, 48, 48 that extend so as to intersect the instrument panel 10 provided with the airbag door 28, and upper end edges (airports) of the wall portions 46, 47, 48, 48. A flange portion 50 formed to extend outward is provided on an edge of the bag door 28 side. The retainer main body 42 according to the embodiment is a cylindrical body in which front, rear, left and right wall portions 46, 47, 48, 48 are connected in a square ring shape, and air folded between opposed wall portions 46, 47, 48, 48 is provided. A space for arranging the bag 36 and the inflator case 22 is provided. The flange portion 50 is formed over the entire circumference of the retainer main body 42, overlaps with the opening edge of the airbag opening 12 a in the base member 12, and is joined to the surface layer material 14 constituting the periphery of the airbag door 28. The front and rear wall portions 46 and 47 extend so as to incline toward the vehicle front side from the top to the bottom, and the retainer main body 42 inclines so that the upper opening is directed to the passenger compartment 16 side instead of the windshield 18 side. ing.

図１および図３に示すように、リテーナ４０は、リテーナ本体４２の上部に設けられたドア支持部４４により上部開口が塞がれる一方で、下部開口が開放されており、この下部開口から内側にインフレータケース２２が挿入される。ドア支持部４４は、エアバッグドア２８となる表層材１４に接合されている。また、ドア支持部４４は、板厚を薄くすることで脆弱化した破断予定部５２を備えている。実施例では、ドア支持部４４の前後中央に左右へ延在する中央ラインと、この中央ラインの各端からドア支持部４４の角のそれぞれへ向けて延在する斜めラインとで破断予定部５２が構成されている。更に、ドア支持部４４には、リテーナ本体４２の各壁部４６,４７,４８,４８に連なる根元部分にヒンジ部５４が設けられている(図３参照)。リテーナ４０は、エアバッグ２６に押し上げられて破断予定部５２で破断することで４つに分割されたドア支持部４４が、前後左右のヒンジ部５４で折れ曲がって上側(乗員室１６側)に開くようになっている。 As shown in FIGS. 1 and 3, the retainer 40 has an upper opening that is blocked by a door support portion 44 provided at an upper portion of the retainer main body 42, and a lower opening that is open from the lower opening. The inflator case 22 is inserted into. The door support portion 44 is joined to the surface material 14 that becomes the airbag door 28. Moreover, the door support part 44 is provided with the planned fracture | rupture part 52 weakened by making board thickness thin. In the embodiment, the planned break portion 52 includes a center line extending left and right at the front and rear center of the door support portion 44 and an oblique line extending from each end of the center line toward each corner of the door support portion 44. Is configured. Further, the door support portion 44 is provided with a hinge portion 54 at a root portion connected to each wall portion 46, 47, 48, 48 of the retainer main body 42 (see FIG. 3). The retainer 40 is pushed up by the airbag 26 and is broken at the planned breakage portion 52, so that the door support portion 44 divided into four is bent at the front and rear, left and right hinge portions 54 and opened to the upper side (the passenger compartment 16 side). It is like that.

図１(ａ),図４および図５に示すように、前記リテーナ本体４２には、前壁部４６と、この前壁部４６に対向する後壁部４７とのそれぞれに、インフレータケース２２の取付片２４が挿入される取付開口５６が設けられている。前後の壁部４６,４７には、左右方向に一定間隔で離間して、複数(実施例では５箇所)の取付開口５６が下側に偏倚して設けられている。取付開口５６は、掛止部２４ｂにおける挿通部２４ａからの延出寸法Ｌ以上の開口幅Ｈで、該掛止部２４ｂの延出方向(実施例では上下方向)に開口するように形成されている。なお、各取付開口５６は、壁部４６,４７を前後(板厚方向)に貫通する略矩形状に形成され、実施例では、取付開口５６の形状および大きさが同じに設定されている。リテーナ４０には、リテーナ本体４２の内側から取付片２４が取付開口５６に嵌め込まれ、取付片２４において取付開口５６を貫く挿通部２４ａから折れ曲がって壁部４６,４７に沿って延びる掛止部２４ｂが該取付開口５６の下側開口縁に重なるように、インフレータケース２２とリテーナ４０とが配置される。このように、リテーナ４０は、取付開口５６から壁部４６,４７の外方に延出する取付片２４の掛止部２４ｂが、取付開口５６の下側開口縁に掛かることで、インフレータケース２２から外れるのを防止している。また、リテーナ本体４２は、エアバッグ２６の展開時に、取付開口５６に通した取付片２４と該取付開口５６の開口縁との引っ掛かりにより、インフレータケース２２に対する相対的な移動(浮き上がり)が規制される。 As shown in FIG. 1A, FIG. 4 and FIG. 5, the retainer main body 42 has a front wall portion 46 and a rear wall portion 47 facing the front wall portion 46. A mounting opening 56 into which the mounting piece 24 is inserted is provided. A plurality of (five places in the embodiment) mounting openings 56 are provided on the front and rear wall portions 46 and 47 so as to be spaced apart at regular intervals in the left-right direction and are biased downward. The mounting opening 56 is formed so as to open in the extending direction (vertical direction in the embodiment) of the latching portion 24b with an opening width H equal to or larger than the extension dimension L from the insertion portion 24a in the latching portion 24b. Yes. Each attachment opening 56 is formed in a substantially rectangular shape penetrating the wall portions 46 and 47 in the front-rear direction (plate thickness direction), and in the embodiment, the shape and size of the attachment opening 56 are set to be the same. In the retainer 40, the attachment piece 24 is fitted into the attachment opening 56 from the inside of the retainer main body 42, and the attachment piece 24 is bent from the insertion portion 24 a that penetrates the attachment opening 56 and extends along the wall portions 46 and 47. The inflator case 22 and the retainer 40 are disposed so that the upper opening edge overlaps the lower opening edge of the attachment opening 56. As described above, the retainer 40 is configured so that the hooking portion 24 b of the mounting piece 24 extending outward from the wall portions 46 and 47 from the mounting opening 56 is hooked on the lower opening edge of the mounting opening 56, whereby the inflator case 22. To prevent it from coming off. Further, when the airbag 26 is deployed, the retainer main body 42 is restrained from being moved (lifted) relative to the inflator case 22 by being caught between the attachment piece 24 that has passed through the attachment opening 56 and the opening edge of the attachment opening 56. The

図１〜図５に示すように、前記リテーナ４０には、取付開口５６に挿入された取付片２４から外れないようにするために保持部５８が設けられている。実施例では、リテーナ本体４２における前後に対向する壁部４６,４７のそれぞれに取付開口５６が設けられているので、前壁部４６および後壁部４７のそれぞれに保持部５８が設けられている。保持部５８は、該保持部５８自身が連なる壁部４６,４７に形成された取付開口５６へ嵌め込み可能に構成されている。また、保持部５８は、取付片２４の挿通部２４ａが貫いた取付開口５６に嵌め込んだ際に、該取付開口５６に残る上下方向(掛止部２４ｂの延出方向)の隙間が、掛止部２４ｂの延出寸法Ｌよりも小さくなるように構成されている。すなわち、リテーナ４０は、保持部５８の取付開口５６への嵌め込みにより、取付開口５６の開口面積を小さくして、取付開口５６に挿入された取付片２４から外れ難くしてある。なお、前後の保持部５８の構成は、基本的に同じである。 As shown in FIGS. 1 to 5, the retainer 40 is provided with a holding portion 58 so as not to be detached from the attachment piece 24 inserted into the attachment opening 56. In the embodiment, the mounting opening 56 is provided in each of the front and rear wall portions 46 and 47 of the retainer main body 42, so that the holding portion 58 is provided in each of the front wall portion 46 and the rear wall portion 47. . The holding portion 58 is configured to be fitted into a mounting opening 56 formed in the wall portions 46 and 47 with which the holding portion 58 itself is continuous. Further, when the holding portion 58 is fitted into the attachment opening 56 through which the insertion portion 24a of the attachment piece 24 passes, a gap in the vertical direction (extending direction of the latching portion 24b) remaining in the attachment opening 56 is hung. It is comprised so that it may become smaller than the extension dimension L of the stop part 24b. In other words, the retainer 40 is fitted into the attachment opening 56 of the holding portion 58 so that the opening area of the attachment opening 56 is reduced, so that the retainer 40 is not easily detached from the attachment piece 24 inserted into the attachment opening 56. The configuration of the front and rear holding portions 58 is basically the same.

図４および図５に示すように、保持部５８は、取付開口５６が設けられた前後の壁部４６,４７の下端縁(エアバッグドア２８と反対側の端縁）にインテグラルヒンジ６０を介して設けられ、壁部４６,４７および保持部５８より薄肉に形成されたインテグラルヒンジ６０で折り曲げて姿勢変位可能になっている。保持部５８は、前後の壁部４６,４７の左右幅と同じ幅で形成され、壁部４６,４７の下端縁に左右方向に亘って形成されたインテグラルヒンジ６０に連なっている。前後の壁部４６,４７の下端縁は、フランジ部５０と同様に外方へ延出するように屈曲しており、その先端に設けられたインテグラルヒンジ６０が取付開口５６から外方へ延出する取付片２４よりも外方に位置している。 As shown in FIGS. 4 and 5, the holding portion 58 has an integral hinge 60 at the lower end edge (the end edge opposite to the airbag door 28) of the front and rear wall portions 46, 47 provided with the mounting opening 56. The wall portion 46, 47 and the integral hinge 60 formed thinner than the holding portion 58 can be bent and displaced in posture. The holding portion 58 is formed with the same width as the left and right widths of the front and rear wall portions 46 and 47, and is connected to an integral hinge 60 formed at the lower end edge of the wall portions 46 and 47 in the left-right direction. The lower end edges of the front and rear wall portions 46 and 47 are bent so as to extend outward in the same manner as the flange portion 50, and an integral hinge 60 provided at the front end extends outward from the mounting opening 56. It is located outside the mounting piece 24 to be taken out.

図１〜図５に示すように、保持部５８は、インテグラルヒンジ６０に連なる基部６２ａから折れ曲がる折曲部６２ｂを有する側面視略「Ｌ」字状に形成された連結片６２と、連結片６２における折曲部６２ｂの延出端(インテグラルヒンジ６０と反対側の縁)に設けられた嵌入部６４とを備えている。嵌入部６４は、連結片６２の折曲部６２ｂを更に延長するように突出する嵌入本体６４ａと、この嵌入本体６４ａの先端に該嵌入本体６４ａの突出方向と交差する方向へ突出する係合爪６４ｂとを備え、連結片６２の延出端に左右方向に離間して複数(実施例では５箇所)設けられている。取付開口５６と嵌入部６４とは対応させて設けられ、実施例では、１つの保持部５８に該保持部５８が連なる壁部４６,４７の取付開口５６に合わせて複数の嵌入部６４が形成されている。嵌入部６４は、その左右幅が取付開口５６の左右幅と同一またはわずかに小さく設定されると共に、係合爪６４ｂが最も突出する部位での上下幅が、取付片２４が挿入された取付開口５６の上下の隙間に応じて設定されている。また、嵌入部６４は、取付開口５６への挿入端から連結片６２に連なる根元側に向かうにつれて上下幅が大きくなるように、係合爪６４ｂがテーパ状に形成されている。 As shown in FIGS. 1 to 5, the holding portion 58 includes a connecting piece 62 having a bent portion 62 b that is bent from a base portion 62 a that is continuous with the integral hinge 60, and is formed in a substantially “L” shape in side view. 62 is provided with an insertion portion 64 provided at an extended end (an edge opposite to the integral hinge 60) of the bent portion 62b. The insertion portion 64 includes an insertion main body 64a that protrudes so as to further extend the bent portion 62b of the connecting piece 62, and an engagement claw that protrudes in a direction intersecting the protruding direction of the insertion main body 64a at the tip of the insertion main body 64a. 64b, and a plurality (five places in the embodiment) are provided at the extending end of the connecting piece 62 so as to be separated in the left-right direction. The attachment opening 56 and the fitting portion 64 are provided in correspondence with each other. In the embodiment, a plurality of fitting portions 64 are formed in accordance with the attachment openings 56 of the wall portions 46 and 47 where the holding portion 58 is connected to one holding portion 58. Has been. The fitting portion 64 has a left-right width that is set to be the same as or slightly smaller than a left-right width of the mounting opening 56, and a vertical width at a portion where the engagement claw 64 b protrudes most is a mounting opening in which the mounting piece 24 is inserted. 56 is set according to the upper and lower gaps. In addition, the engaging claw 64 b is formed in a tapered shape so that the insertion portion 64 has a vertical width that increases from the insertion end to the attachment opening 56 toward the root side continuous with the connecting piece 62.

前記保持部５８は、インテグラルヒンジ６０で折り曲げて、自身が連なる壁部４６,４７の外面に対して連結片６２を接近または遠ざかるように揺動させて、壁部４６,４７の外面から離れて取付開口５６を開放した姿勢(図１(ａ),図２(ａ)および図４参照)と、嵌入部６４が取付開口５６に嵌合した保持姿勢(図１(ｂ),図２(ｂ)および図５参照)との間で姿勢変位可能である。保持部５８は、保持姿勢において、連結片６２の基部６２ａが壁部４６,４７の外面に対向すると共に連結片６２の折曲部６２ｂが取付開口５６の貫通方向に沿うように延びて、取付開口５６に挿入された嵌入部６４の係合爪６４ｂが取付開口５６の上側開口縁内側に掛かる。実施例では、保持部５８の保持姿勢において、取付開口５６を通る嵌入部６４の嵌入本体６４ａによって、取付片２４が貫いた取付開口５６に残る上下方向の隙間を、掛止部２４ｂの延出寸法Ｌよりも小さくしている。 The holding portion 58 is bent by the integral hinge 60 and swings so that the connecting piece 62 approaches or moves away from the outer surface of the wall portions 46 and 47 to which the holding portion 58 is connected, and is separated from the outer surface of the wall portions 46 and 47. And the holding posture (FIGS. 1B and 2) in which the fitting portion 64 is fitted in the mounting opening 56 (see FIGS. 1A, 2A and 4). The position can be changed between b) and FIG. In the holding posture, the holding portion 58 is attached so that the base portion 62a of the connecting piece 62 faces the outer surface of the wall portions 46 and 47, and the bent portion 62b of the connecting piece 62 extends along the penetrating direction of the mounting opening 56. The engaging claw 64 b of the fitting portion 64 inserted into the opening 56 is hooked on the inner side of the upper opening edge of the mounting opening 56. In the embodiment, in the holding posture of the holding portion 58, the fitting main body 64a of the fitting portion 64 that passes through the attachment opening 56 causes the vertical gap remaining in the attachment opening 56 through which the attachment piece 24 penetrates to extend the latching portion 24b. It is smaller than the dimension L.

図５に示すように、保持部５８は、壁部４６,４７において外方へ延出するよう屈曲した下端縁に連ねられ、保持姿勢とした際に、連結片６２の基部６２ａと壁部４６,４７との間に、取付片２４において取付開口５６から外方へ延出する掛止部２４ｂを収容し得る隙間があくように設定される。また、保持部５８は、保持姿勢における連結片６２の基部６２ａと壁部４６,４７との間の隙間が、取付片２４において取付開口５６から外方へ延出する掛止部２４ｂの突出寸法に合わせて設定される。そして、保持部５８は、取付開口５６に嵌入部６４を嵌め込んだ保持姿勢において、リテーナ本体４２の壁部４６,４７との間に、取付片２４の掛止部２４ｂを挟むように構成されている。前壁部４６に設けられた保持部５８には、嵌入部６４から連結片６２にかけて溝部６６が設けられ(図３参照)、嵌入部６４を取付開口５６に嵌合した際に、取付開口５６から外方へ延出する掛止部２４ｂを溝部６６に収めて(図５参照)、左右方向の変位を規制するようになっている。 As shown in FIG. 5, the holding portion 58 is connected to the lower end edge bent so as to extend outward in the wall portions 46, 47, and when in the holding posture, the base portion 62 a of the connecting piece 62 and the wall portion 46. , 47 is set such that there is a gap that can accommodate the latching portion 24b extending outward from the mounting opening 56 in the mounting piece 24. Further, the holding portion 58 has a protruding dimension of the latching portion 24b in which the gap between the base portion 62a of the connecting piece 62 and the wall portions 46 and 47 in the holding posture extends outward from the mounting opening 56 in the mounting piece 24. It is set according to. And the holding part 58 is comprised so that the latching part 24b of the attachment piece 24 may be pinched | interposed between the wall parts 46 and 47 of the retainer main body 42 in the holding | maintenance attitude | position which fitted the insertion part 64 in the attachment opening 56. FIG. ing. The holding portion 58 provided on the front wall portion 46 is provided with a groove portion 66 from the fitting portion 64 to the connecting piece 62 (see FIG. 3), and when the fitting portion 64 is fitted into the fitting opening 56, the attachment opening 56 is provided. A latching portion 24b extending outward from the groove is accommodated in the groove 66 (see FIG. 5) to restrict displacement in the left-right direction.

前記保持部５８は、リテーナ４０を成形する成形型の開き方向または該成形型からの型抜き方向に合わせた姿勢(成形姿勢)で型成形される。実施例の保持部５８は、成形姿勢において、連結片６２の基部６２ａおよび嵌入部６４の係合爪６４ｂが壁部４６,４７の下端縁から該壁部４６,４７に沿って下方へ延びると共に、連結片６２の折曲部６２ｂおよび嵌入部６４の嵌入本体６４ａが取付開口５６の貫通方向へ延びた状態にある(図１(ａ),図２(ａ)および図４参照)。保持部５８は、インテグラルヒンジ６０で折り曲げて、成形姿勢から壁部４６,４７に接近する方向および遠ざかる方向の何れにも姿勢変位可能であり、取付開口５６を開放している成形姿勢から壁部４６,４７の外面に近づけるように姿勢変位して、保持姿勢となる。 The holding portion 58 is molded in a posture (molding posture) in accordance with the opening direction of the molding die for molding the retainer 40 or the direction of removing the mold from the molding die. In the holding position 58 of the embodiment, the base portion 62a of the connecting piece 62 and the engaging claw 64b of the fitting portion 64 extend downward from the lower edge of the wall portions 46 and 47 along the wall portions 46 and 47 in the molding posture. The bent portion 62b of the connecting piece 62 and the fitting main body 64a of the fitting portion 64 are in a state of extending in the penetrating direction of the mounting opening 56 (see FIGS. 1A, 2A, and 4). The holding portion 58 is bent by the integral hinge 60 and can be displaced in either the direction approaching or moving away from the walls 46 and 47 from the molding posture, and the wall from the molding posture in which the mounting opening 56 is opened. The posture is changed so as to be close to the outer surfaces of the portions 46 and 47, and the holding posture is obtained.

実施例のリテーナ４０は、次のように組み付けられる。リテーナ本体４２の壁部４６,４７,４８,４８を、基材１２のエアバッグ開口１２ａに上方から挿入し、フランジ部５０をエアバッグ開口１２ａの開口縁に重ね合わせて、リテーナ２０を基材１２に取り付ける。リテーナ４０を取り付けた基材１２に、表層材１４を発泡成形や貼り付けなどによって取り付ける。インフレータケース２２を、インストルメントパネル１０に取り付けられたリテーナ４０におけるリテーナ本体４２の下部開口から挿入する(図６(ａ))。インフレータケース２２における前後の取付片２４を、リテーナ本体４２の内側から取付開口５６へそれぞれ挿入し、取付片２４を介してリテーナ４０とインフレータケース２２とを組み合わせる。なお、取付片２４を取付開口５６に挿入するときは、保持部５８を開放姿勢にして取付開口５６を開放してある。次に、保持部５８をインテグラルヒンジ６０で折り曲げて開放姿勢から保持姿勢へ姿勢変位し、嵌入部６４を対応の取付開口５６に外側から挿入し、嵌入部６４の係合爪６４ｂを取付開口５６の開口縁に掛けて、保持姿勢で係止する。インストルメントパネル１０を車体に設置し、リテーナ４０と接続されたインフレータケース２２を、取付具を介してリインフォースバー３８に固定する(図６(ｂ))。 The retainer 40 of the embodiment is assembled as follows. The wall portions 46, 47, 48, 48 of the retainer main body 42 are inserted into the airbag opening 12a of the base member 12 from above, and the flange portion 50 is overlapped with the opening edge of the airbag opening 12a. 12 is attached. The surface layer material 14 is attached to the base material 12 to which the retainer 40 is attached by foam molding or pasting. The inflator case 22 is inserted from the lower opening of the retainer main body 42 in the retainer 40 attached to the instrument panel 10 (FIG. 6A). The front and rear attachment pieces 24 in the inflator case 22 are respectively inserted into the attachment openings 56 from the inside of the retainer main body 42, and the retainer 40 and the inflator case 22 are combined through the attachment pieces 24. When the attachment piece 24 is inserted into the attachment opening 56, the attachment opening 56 is opened with the holding portion 58 in the open posture. Next, the holding portion 58 is bent by the integral hinge 60 to be displaced from the open posture to the holding posture, the insertion portion 64 is inserted into the corresponding attachment opening 56 from the outside, and the engagement claw 64b of the insertion portion 64 is attached to the attachment opening. It is hung on the opening edge of 56 and locked in a holding posture. The instrument panel 10 is installed on the vehicle body, and the inflator case 22 connected to the retainer 40 is fixed to the reinforcement bar 38 via a fixture (FIG. 6B).

〔実施例の作用〕
次に、実施例に係るリテーナ４０の作用について説明する。リテーナ４０は、インテグラルヒンジ６０で折り曲げる保持部５８の姿勢変位により、取付開口５６を開放した状態から取付片２４が挿入された取付開口５６に保持部５８の嵌入部６４を嵌め込むことで、嵌入部６４によって取付片２４が挿入された取付開口５６の隙間を小さくすることができる。これにより、インストルメントパネル１０またはリテーナ３０がインフレータケース２２に対して相対的に下がった位置に設置された場合であっても、取付片２４が取付開口５６から抜け難くなるから、取付片２４からリテーナ本体４２を外れ難くすることができる。また、取付片２４を挿入した取付開口５６にできる隙間が保持部５８の嵌入部６４の挿入により小さくなっているので、取付片２４の配置ずれ(遊び)が生じ難くなり、取付開口５６に挿入された取付片２４(インフレータケース２２)とリテーナ本体４２との相対的な位置関係がずれることを防止できる。従って、取付片２４の掛止部２４ｂと取付開口３６の開口縁との掛かり代を適切に確保することができると共に、掛かり状態を保つことができる。また、取付開口５６への保持部５８の嵌入部６４の挿入により取付片２４の遊びが少なくなるので、インストルメントパネル１０を車体に設置する際に、インフレータケース２２がリテーナ４０に対して安定して、リテーナ４０とインフレータケース２２とが外れ難くなる。 (Effects of Example)
Next, the operation of the retainer 40 according to the embodiment will be described. The retainer 40 fits the fitting portion 64 of the holding portion 58 into the attachment opening 56 into which the attachment piece 24 is inserted from the state in which the attachment opening 56 is opened due to the posture displacement of the holding portion 58 that is bent by the integral hinge 60. The gap of the attachment opening 56 into which the attachment piece 24 is inserted can be reduced by the fitting portion 64. Accordingly, even when the instrument panel 10 or the retainer 30 is installed at a position relatively lowered with respect to the inflator case 22, the attachment piece 24 is difficult to be removed from the attachment opening 56. The retainer main body 42 can be made difficult to come off. Further, since the gap formed in the mounting opening 56 into which the mounting piece 24 is inserted is reduced by the insertion of the fitting portion 64 of the holding portion 58, the mounting piece 24 is less likely to be displaced (played) and inserted into the mounting opening 56. It is possible to prevent the relative positional relationship between the attached mounting piece 24 (inflator case 22) and the retainer main body 42 from shifting. Accordingly, it is possible to appropriately secure the allowance between the engaging portion 24b of the attaching piece 24 and the opening edge of the attaching opening 36, and to maintain the engaging state. Further, since the play of the attachment piece 24 is reduced by inserting the fitting portion 64 of the holding portion 58 into the attachment opening 56, the inflator case 22 is stabilized with respect to the retainer 40 when the instrument panel 10 is installed on the vehicle body. Thus, the retainer 40 and the inflator case 22 are difficult to come off.

前記リテーナ４０は、嵌入部６４で取付片２４が貫いた取付開口５６の隙間を埋めることで、インストルメントパネル１０のエアバッグドア２８となる部分を表側から押した際の剛性感が向上すると共に、車両走行時にリテーナ４０と取付片２４との干渉に起因する異音の発生を防止することができる。また、エアバッグ２６の膨張時に前壁部４６および後壁部４７に内側から力が加わっても、取付開口５６に嵌まった嵌入部６４により取付片２４から壁部４６,４７が外れることを防止することができる。従って、リテーナ４０とインフレータケース２２との分離を防止できるので、膨張するエアバッグ２６の力がエアバッグドア２８に効率よく伝わることになり、エアバッグドア２８をインストルメントパネル１０から素早く破断させて開放させて、エアバッグ２６を乗員室１６に円滑に展開させることができる。 The retainer 40 fills the gap of the mounting opening 56 through which the mounting piece 24 penetrates at the fitting portion 64, thereby improving the rigidity when the portion that becomes the airbag door 28 of the instrument panel 10 is pushed from the front side. Further, it is possible to prevent the generation of abnormal noise due to the interference between the retainer 40 and the mounting piece 24 when the vehicle is traveling. Further, even when a force is applied to the front wall portion 46 and the rear wall portion 47 from the inside when the airbag 26 is inflated, the wall portions 46, 47 are removed from the attachment piece 24 by the fitting portion 64 fitted in the attachment opening 56. Can be prevented. Accordingly, since the retainer 40 and the inflator case 22 can be prevented from being separated, the force of the inflating airbag 26 is efficiently transmitted to the airbag door 28, and the airbag door 28 is quickly broken from the instrument panel 10. The air bag 26 can be smoothly opened in the passenger compartment 16 by being opened.

前記保持部５８は、取付開口５６を開放した状態から姿勢変位することで取付開口５６に嵌め込む構成であるので、取付開口５６を開放した状態にしておけば、取付開口５６にインフレータケース２２の取付片２４を挿入する際に邪魔にならない。リテーナ４０は、取付片２４の挿通部２４ａが貫いた取付開口５６に嵌まった保持部５８の嵌入部６４によって、取付開口５６に残る隙間を、掛止部２４ｂの延出寸法Ｌよりも小さくなるように構成してある。これにより、取付開口５６を、掛止部２４ｂの延出寸法Ｌ以上の開口幅Ｈで開口するように形成して、取付開口５６の開口幅Ｈを取付片２４が無理なく挿入できるように設定しても、取付片２４の掛止部２４ｂが取付開口５６を通らないので、取付片２４からリテーナ４０をより外れ難くすることができる。また、保持部５８は、取付開口５６の開口縁に掛かる嵌入部６４の係合爪６４ｂにより取付開口５６に嵌め込んだ状態を保つことができるので、取付片２４からリテーナ４０をより外れ難くすることができる。更に、リテーナ４０は、保持部５８を取付開口５６に嵌め込んだ際に、リテーナ本体４２の壁部４６,４７との間に、取付片２４において取付開口５６から外方へ延出する掛止部２４ｂを挟む構成であるから、保持部５８によって取付片２４を前後にずれないように位置規制することができる。実施例のエアバッグ装置２０では、エアバッグ２６の膨張時に後壁部４７よりも前壁部４６に力が大きくかかるが、前側の取付片２４の掛止部２４ｂを保持姿勢とした保持部５８の溝部６６に収容して位置規制しているので、保持部５８の嵌合により抜け止めされた取付片２４との掛かりにより前壁部４６の変形を防止して、膨張するエアバッグ２６の力をエアバッグドア２８により効率よく伝えることができる。 Since the holding portion 58 is configured to be fitted into the attachment opening 56 by being displaced from the state in which the attachment opening 56 is opened, if the attachment opening 56 is left open, the inflator case 22 is inserted into the attachment opening 56. It does not get in the way when the mounting piece 24 is inserted. The retainer 40 has a gap remaining in the attachment opening 56 smaller than the extension dimension L of the latching portion 24b by the fitting portion 64 of the holding portion 58 fitted into the attachment opening 56 through which the insertion portion 24a of the attachment piece 24 passes. It is comprised so that it may become. Accordingly, the mounting opening 56 is formed so as to open with an opening width H equal to or greater than the extension dimension L of the latching portion 24b, and the opening width H of the mounting opening 56 is set so that the mounting piece 24 can be inserted without difficulty. Even so, the retaining portion 24 b of the attachment piece 24 does not pass through the attachment opening 56, so that the retainer 40 can be more easily removed from the attachment piece 24. Moreover, since the holding part 58 can maintain the state fitted in the attachment opening 56 by the engaging claw 64b of the fitting part 64 that hangs on the opening edge of the attachment opening 56, the retainer 40 is more difficult to be detached from the attachment piece 24. be able to. Further, when the holding portion 58 is fitted into the attachment opening 56, the retainer 40 is latched between the wall portions 46 and 47 of the retainer main body 42 and extending outward from the attachment opening 56 in the attachment piece 24. Since it is the structure which pinches | interposes the part 24b, the position of the attachment piece 24 can be regulated by the holding part 58 so as not to be displaced forward and backward. In the airbag device 20 according to the embodiment, a force is applied to the front wall portion 46 more than the rear wall portion 47 when the airbag 26 is inflated, but the holding portion 58 is configured to hold the hooking portion 24b of the front mounting piece 24. Since the position of the air bag 26 is restricted by being accommodated in the groove portion 66, the front wall portion 46 is prevented from being deformed by engagement with the attachment piece 24 that is prevented from being detached by fitting of the holding portion 58, and the force of the inflating airbag 26 is increased. Can be transmitted efficiently through the airbag door 28.

前記リテーナ４０は、保持部５８がリテーナ本体４２と一体的に形成されているので、部品点数を減らすことができると共に、部品管理の手間が変わらない。また、１つの保持部５８に複数の嵌入部６４が設けられているので、保持部５８の姿勢変位に伴って複数の取付開口５６に嵌入部６４を嵌め込むことができ、保持部５８の嵌め込み手間を減らすことができる。リテーナ４０は、インテグラルヒンジ６０で折り曲げて保持部５８を姿勢変位して取付開口５６に嵌め込む構成であるから、成形型の開き方向または該成形型からの型抜き方向に合わせた成形姿勢で保持部５８をリテーナ本体４２と一体成形することができ、保持部５８を設けたとしても成形型に要するコストを低減することができる。 Since the retainer 40 is formed integrally with the retainer main body 42, the retainer 40 can reduce the number of parts and the labor of parts management does not change. In addition, since the plurality of fitting portions 64 are provided in one holding portion 58, the fitting portions 64 can be fitted into the plurality of attachment openings 56 according to the displacement of the holding portion 58, and the holding portion 58 is fitted. Time and effort can be reduced. The retainer 40 is configured to be bent by the integral hinge 60 and displace the posture of the holding portion 58 so as to be fitted into the mounting opening 56. Therefore, the retainer 40 has a molding posture that matches the opening direction of the molding die or the direction of releasing from the molding die. The holding part 58 can be integrally formed with the retainer main body 42, and even if the holding part 58 is provided, the cost required for the mold can be reduced.

(変更例)
前述した実施例に限らず、例えば以下のようにも変更可能である。
(１)リテーナ本体の壁部は、筒状に連なる構成に限らず、エアバッグの設置部位を挟んで対向するように構成されていてもよい。また、取付開口が形成された壁部が少なくとも１つあればよい。
(２)保持部は、リテーナ本体において取付開口が設けられた壁部であれば、何れに設けてもよく、また取付開口が設けられた壁部の全てに設ける必要もない。
(３)保持部は、取付開口毎または所定数の取付開口毎に分割して複数設けてもよい。
(４)嵌入部の係合爪は、取付開口の上側開口縁に掛かる構成に限らず、取付開口の横などの他の開口縁に掛かるように形成してもよい。
(５)実施例ではインストルメントパネルに取り付けるリテーナを挙げたが、ピラーやその他の車両内装部材に取り付けるリテーナにも適用可能である。
(６)実施例では、取付開口を、掛止部における挿通部からの延出寸法Ｌ以上の開口幅Ｈで、掛止部の延出方向(上下方向)に開口するように形成したが、リテーナにインフレータケースを組み付ける際に、掛止部が取付開口を挿通することができれば、開口幅Ｈは延出寸法Ｌ以下であってもよい。 (Change example)
For example, the present invention can be modified as follows.
(1) The wall portion of the retainer body is not limited to a configuration that is continuous in a cylindrical shape, and may be configured to face each other with an installation site of the airbag interposed therebetween. Further, it is sufficient that there is at least one wall portion in which the mounting opening is formed.
(2) The holding portion may be provided on any wall portion provided with an attachment opening in the retainer body, and need not be provided on all the wall portions provided with the attachment opening.
(3) A plurality of holding portions may be provided for each mounting opening or divided for each predetermined number of mounting openings.
(4) The engaging claw of the fitting portion is not limited to the configuration that is hooked on the upper opening edge of the mounting opening, but may be formed so as to be hooked on another opening edge such as the side of the mounting opening.
(5) Although the retainer attached to an instrument panel was mentioned in the Example, it is applicable also to the retainer attached to a pillar and other vehicle interior members.
(6) In the embodiment, the mounting opening is formed so as to open in the extending direction (vertical direction) of the latching portion with an opening width H equal to or larger than the extension dimension L from the insertion portion in the latching portion. When the inflator case is assembled to the retainer, the opening width H may be equal to or less than the extension dimension L as long as the latching portion can be inserted through the attachment opening.

２２インフレータケース，２４取付片，２４ａ挿通部，２４ｂ掛止部，
２６エアバッグ，２８エアバッグドア，４２リテーナ本体，４６前壁部(壁部)，
４７後壁部(壁部)，４８横壁部(壁部)，５６取付開口，５８保持部，
６０インテグラルヒンジ，６４嵌入部，Ｌ (掛止部の挿通部からの)延出寸法，
Ｈ (取付開口の)開口幅 22 inflator case, 24 mounting piece, 24a insertion part, 24b latching part,
26 airbags, 28 airbag doors, 42 retainer body, 46 front wall (wall),
47 rear wall portion (wall portion), 48 side wall portion (wall portion), 56 mounting opening, 58 holding portion,
60 integral hinge, 64 fitting part, L (from the insertion part of the latching part) extension dimension,
H Opening width (of mounting opening)

Claims

A retainer that supports an airbag door opened by an airbag and is combined with an inflator case provided with an inflator for inflating the airbag,
The inflator case is provided with an attachment opening through which the hook-like attachment piece provided in the inflator case can be inserted, penetrating the wall portion, and being caught by the attachment piece passed through the attachment opening and the opening edge of the attachment opening. A retainer body whose relative movement is restricted,
From the state where the mounting opening is opened by an attitude hinge that is provided via an integral hinge at the edge opposite to the airbag door in the wall portion provided with the mounting opening, and is bent by the integral hinge. A retainer comprising: a holding portion that can be fitted into a mounting opening through which the mounting piece is passed.

The retainer according to claim 1, wherein the holding portion includes a fitting portion that is fitted into the attachment opening and is hooked on an opening edge of the attachment opening.

The retainer according to claim 2, wherein the holding portion is provided with a plurality of insertion portions, and the respective insertion portions are fitted into corresponding mounting openings.

The holding portion is configured to sandwich a latching portion extending outward from the mounting opening in the mounting piece between the retaining portion and the wall portion of the retainer main body when fitted into the mounting opening. The retainer according to any one of Items 1 to 3.

The mounting opening is formed such that a hooking portion extending from the insertion portion extending in the through direction of the mounting opening in the mounting piece and extending along the wall portion can be inserted.
When the holding portion is fitted into the attachment opening through which the insertion portion penetrates, the gap in the extending direction from the insertion portion of the latching portion remaining in the attachment opening is separated from the insertion portion of the latching portion. The retainer as described in any one of Claims 1-4 comprised so that it might become smaller than the extension dimension of this.