JP4174947B2 - Under cover mounting structure for vehicles - Google Patents

Under cover mounting structure for vehicles Download PDF

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Publication number
JP4174947B2
JP4174947B2 JP2000073568A JP2000073568A JP4174947B2 JP 4174947 B2 JP4174947 B2 JP 4174947B2 JP 2000073568 A JP2000073568 A JP 2000073568A JP 2000073568 A JP2000073568 A JP 2000073568A JP 4174947 B2 JP4174947 B2 JP 4174947B2
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under cover
vehicle
occupant
notch
inner core
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JP2001260708A (en
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進二 原
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、車室内のインストルメントパネルにアンダーカバーを取付ける車両用アンダーカバーの取付け構造、特に、車両衝突時に乗員の膝からの過荷重を受けた際に変形して衝撃吸収するようにしたアンダーカバーを取付ける車両用アンダーカバー取付け構造に関する。
【0002】
【従来の技術】
車室前部のインストルメントパネルは乗員と対向し、操作性の良い位置にあることより、ここには各種のメータや物品収納部等が形成される。特に、運転席と対向する部位にはメータやステアリングコラム等が配備され、それらの下方にはアンダーカバーが取り付けられることが多い。このアンダーカバーはステアリングコラムの下側切欠部を覆うと共に乗員の膝と対向することより、車両衝突時に乗員の膝を保護するためのニープロテクタとしての機能を付加されたものがある。
【0003】
たとえば、図6に示すように、車室前部のインストルメントパネル100は車両の後方(紙面右方向)を向く切欠部110を有した表皮部120を備え、その表皮部を内側芯部130で補強している。内側芯部130は切欠部110との対向部にメータ140の下側取付け部130aや、メータ140の周縁を覆うメータベゼル150の下端取付け部130bや、アンダーカバー160の上端取付け部130cが連続して形成されている。
【0004】
ここで、下端取付け部130b及び上端取付け部130cは内側芯部130の切欠部110に上下に連続して形成されており、これら取付け部130b、130cにメータベゼル150とアンダーカバー160がクリップCやビスVで一体的に結合され、これにより、メータベゼル150の下端d1とアンダーカバー160の上端d2の両突き出し方向である前後方向Xの位置決めが行われている。なお、このようなニープロテクタの一例が実用新案登録公報第2549497号に開示される。
【0005】
【発明が解決しようとする課題】
ところで、ニープロテクタを成すアンダーカバー160は自動車の衝突時に前方にずれる乗員の膝Nより過荷重Pを受け、その際、2点鎖線で示すように変形して、乗員の膝Nが受ける衝撃力を低減させるように機能する。
しかし、内側芯部130の切欠部110近傍に形成される下端取付け部130bや上端取付け部130cは連続して下方に延出形成され、アンダーカバー160の上端を支持する上端取付け部130cの上下方向の位置が比較的低くなる傾向にある。このため、乗員の膝Nが前方にずれた際に、この膝Nがアンダーカバー160の上端d2を介して取付け部130cに当接し、乗員の膝が受ける衝撃力を吸収するためのアンダーカバー160の変形を阻害し、衝撃低減機能を発揮できないこととなる。
【0006】
そこで、乗員の膝Nが取付け部130bや取付け部130cと干渉しないよう、たとえば、これらの位置を上方にずらすと、メータ140やメータベゼル150の形状変更の必要性が生じてしまう。更に、下端取付け部130bや上端取付け部130cの剛性を低減させると、これらに支持されるメータベゼル150の下端d1とアンダーカバーの上端d2との前後方向Xの位置ずれが生じやすくなり、見栄えが低下するという問題が生じる。
本発明は、上述の課題に基づき、ニープロテクタの機能を有するアンダーカバーをインストルメントパネルに確実に取り付けられると共に衝撃低減機能を確保できる車両用アンダーカバー取付け構造を提供することを目的とする。
【0007】
【課題を解決するための手段】
上述の目的を達成するために、請求項1の発明では、乗員との対向壁に形成され車両のステアリングコラムを嵌挿する切欠部が形成された表皮部と表皮部を補強する内側芯部を有したインストルメントパネルを備え、同インストルメントパネルに配備され、前記切欠部の少なくとも下側部分に同部分を覆うと共に略矩形板状の主部が乗員の膝から過荷重を受けた際に変形できるように形成されたアンダーカバーを取付けるようにした車両用アンダーカバー取付け構造において、前記内側芯部の前記切欠部との対向部に上向きの取付け面を有した先端部が形成されると共に前記内側芯部の下方に下方取付け部を形成し、前記先端部の取付け面に前記アンダーカバーの主部の上端部の屈曲フランジを取付けると共に前記下方取付け部に前記主部の下部に形成された左右端取付け部を締め付け結合し、前記アンダーカバーには前記主部の上端部近傍で前記屈曲フランジの直下位置に車幅方向に連続して溝状の脆弱部を形成している。
このように、内側芯部の先端部の取付け面にアンダーカバーの主部の上端部の屈曲フランジを取付けると共に内側芯部の下方取付け部に主部の下部に形成された左右端取付け部を締め付け結合した。このため、先端部の下方への延出量を小さく抑え、同部を膝より上方に保持することが容易と成り、この取付け面に上端部を取り付けたアンダーカバーの乗員との対向面のほぼ全域を変形可能に形成でき、過荷重を吸収して乗員の膝が受ける衝撃力を低減させるニープロテクタとしての機能を確実に発揮させることができる。特に、アンダーカバーの主部の上端部近傍で屈曲フランジの直下位置に車幅方向に連続して溝状の脆弱部を形成したので、アンダーカバーの乗員との対向面が乗員の膝より確実に過荷重を受け変形し、その際、脆弱部が破断して過荷重を吸収して乗員の膝が受ける衝撃力をより低減させることができる。しかも、アンダーカバーの上端部の前後方向Xの位置ずれを防止し見栄えの低下を防止できる。
【0008】
請求項2の発明では、請求項1記載の車両用アンダーカバー取付け構造において、
前記ステアリングコラムの上側の切欠部をメータベゼルで下側の切欠部をアンダーカバーで覆い、前記アンダーカバーの上端部に前記メータベゼルと対向する上方突片を延出形成し、同上方突片に前記メータベゼルの下端部を取付けている。
この場合、特に、内側芯部の上向きの取付け面にアンダーカバーの上端部を取り付け、その上端部より上方突片を延出形成し、この上方突片にメータベゼルの下端部を取付けたので、メータベゼルの下端部がアンダーカバー基準でそのアンダーカバーの上端部に前後方向の位置ずれなく取付けでき、見栄えの低下を防止できる。しかも、ステアリングコラムの直下に配備されているアンダーカバーの乗員との対向面のほぼ全てをニープロテクタとして機能させることができる。
【0009】
【発明の実施の形態】
図1には本発明の一実施形態としての車両用アンダーカバー取付け構造を用いてアンダーカバー1を取り付けたインストルメントパネル2を示した。
インストルメントパネル2は軟質合成樹脂で成形された表皮部5とこれを補強する硬質合成樹脂で成形された内側芯部4とを一体化したものとして形成される。インストルメントパネル2は図示しない自動車の車室前部に車幅方向Y(図3参照)に長く配備され、車室前部の図示しないボデー側の左右インナーパネルに一体結合されたデッキクロスバー3上に載置され、デッキクロスバー3に内側芯部4の要部が締め付け結合されることで車体側に一体結合される。
【0010】
表皮部5の運転者との対向部位には下端縁より上方に向けて切欠された切欠部9が形成される。切欠部9はその上側部分がコンビネーションメータ7及び同メータの周縁部を覆うメータベゼル8で覆われ、下側部分がアンダーカバー1で覆われ、メータベゼル8とアンダーカバー1で挟まれる切欠部9のほぼ中央部にステアリングコラム6が嵌挿配備される。このため、メータベゼル8及びアンダーカバー1のステアリングコラム6との各対向部は、図3に示すように凹状に形成され、メータベゼル8の下端部n1とアンダーカバー1の上端部n2とはステアリングコラム6の左右側でそれぞれ互いに当接するよう形成される。
【0011】
剛性強化された内側芯部4はその切欠部9と対向する部位に表皮部5の切欠部周縁部501を補強する周縁補強部401を、切欠部9の中央側に位置する部位に切欠部対向部12を配備する。切欠部対向部12の上端奥側部分は縦向きに屈曲形成されコンビネーションメータ7の取付け部121を成し、その下端より後方である乗員側(図1で右側)に段部を介して延出板部122が延出形成される。延出板部122はその先端側に上向きの取付け面fを有する取付け面形成部としての先端部123が形成され、しかも、延出板部122の中央に芯側切欠部13(図2参照)が形成される。切欠部9及び芯側切欠部13に嵌挿されたステアリングコラム6はブラケット11を介してデッキクロスバー3に締め付け結合される。
【0012】
周縁補強部401により裏側より補強された切欠部周縁部501は、図1に示すように厚さ方向の段差部を形成される。段差部はメータベゼル8の上部及び左右側部や、アンダーカバー1の左右側部が嵌合するよう形成され、この段差部が切欠部周縁部501とメータベゼル8やアンダーカバー1との間の隙間を排除できるように形成されている。なお、メータベゼル8の上部及び左右側部とアンダーカバー1の左右側部はクリップCやビスVで延出板部122側の各対向位置の図示しない矩形穴や螺子穴に結合される。
【0013】
切欠部9の下側部分を覆うアンダーカバー1はインストルメントパネルの表皮材5と同様の合成樹脂材で車幅方向Yに長い略矩形板状に成形され、乗員側と対向する湾曲面を有した主部101を備える。更に、主部101はその左右の上端部n2に屈曲フランジ部102を延出形成し、同部より上方に上方突片15を延出形成する。主部101は乗員の膝Nから過荷重を受けた際に変形できる程度の剛性板として形成される。屈曲フランジ部102は先端部123の上向きの取付け面fに重なるように形成される。この取付け面fの複数の適所にはスピードネジ16がそれぞれ取り付けられ、これと対向する各屈曲フランジ部102の部位にはU字形穴gが形成される。このため、U字形穴gに挿通された螺子Vがスピードネジ16に締め付け結合されることで、上向きの取付け面fにアンダーカバー1の屈曲フランジ部102を締め付け固定できる。
【0014】
更に、アンダーカバー1の上端部n2より上方に延出する上方突片15はその基部が上端部n2側に一体的に結合されており、上側より下側に向けて締め付け穴20、矩形のクリップ穴18及び位置決め穴19を順次形成している。締め付け穴20は側方延出板部122aのねじ穴m1に対向して形成され、締め付け穴20に嵌挿された螺子Vをねじ穴m1に螺着することで上方突片15及びアンダーカバーの上端部n2を確実に側方延出板部122a側に固定できる。矩形のクリップ穴18はメータベゼルの下端部n1の裏面に取り付けられる固定用クリップCを押し込み嵌着可能に形成される。なお、側方延出板部122aには上方突片15上のクリップ穴18と対向する部位に固定用クリップCとの干渉を防止するための凹部qが形成される。位置決め穴19はメータベゼル8の下端部n1の裏面に突設される位置決めピン21をずれなく嵌挿可能に形成される。
【0015】
次に、このようなインストルメントパネル2に装備されたアンダーカバーの取付け構造を用いてのアンダーカバー1の取付け手順を説明する。
まず、インストルメントパネル2が車室前部にデッキクロスメンバ3を介して一体的に取付けられ、切欠部9及び芯側切欠部13にステアリングコラム6が嵌挿された上でデッキクロスバー3に締め付け結合される。
その上で、切欠部対向部12の取付け部121にコンビネーションメータ7が取り付けられ、更に、先端部123の取付け面fにアンダーカバー1の屈曲フランジ部102が重ねられ、先端部123のU字形穴gに挿通される螺子Vが各スピードネジ16に締め付け結合されることで、上向きの取付け面fにアンダーカバー1の屈曲フランジ部102を締め付ける。次いで、アンダーカバー1の左右端取付け部103を螺子Vにより内側芯部4の下方取付け部124に締め付ける。更に、アンダーカバー1の上方突片15の締め付け穴20に嵌挿された螺子Vをねじ穴m1に螺着することで上方突片15を介してアンダーカバー1を側方延出板部122aに締め付けできる。
【0016】
この後、切欠部対向部12の取付け部121に、メータベゼル8の複数(図3参照)の固定用クリップCが矩形のクリップ穴18やその他の図示しないクリップ穴に押し込み嵌着され、切欠部9にメータベゼル8が確実に嵌着され、同時に、位置決めピン21が位置決め穴19に嵌着されることにより、メーターベゼル8のアンダーカバー1に対する位置決めを行える。この後、インストルメントパネル2のその他の箇所への取付け処理が成され、インストルメントパネルの車室前部への取付けが完了する。
このように、アンダーカバー1の上端部n2は剛性の高い切欠部対向部12側の先端部123に確実に固定され、その上端部n2側の上方突片15を介してメーターベゼル8の下端部n1が確実に固定される。このため、メータベゼルの下端部n1がアンダカバー基準でアンダカバー1の上端部n2に前後方向Xの位置ずれなく取付けでき、車両の走行中においても相互のずれが生じることを防止でき、見栄えの低下を防止できる。
【0017】
更に、図4に示すように、車両の走行中において車両が衝突し、乗員の膝Nが前方にずれ、アンダーカバー1の主部101に過荷重Pを加えるとする。この際、アンダーカバー1の上端部n2を支持する先端部123は単に上向きの取付け面fを形成したのみで、下方に延出して乗員方向(紙面右方向)を向いた状態の取付け部(図6での取付け部130c)を全く形成していない。このため、先端部123の上下方向の高さ位置h1は比較的高位置に保持され、乗員の膝Nの高さ位置h0に対して所定量の間隔tを確保できる。このため、アンダーカバー1の主部101のほぼ全域が切欠部対向部12の先端部123に邪魔されず2点鎖線で示すように変形を促進でき、乗員の膝Nが受ける衝撃力を吸収するニープロテクタとしての機能を確実に発揮させることができる。
【0018】
上述の処において、ニープロテクタとして機能させるアンダーカバー1の主部101は乗員の膝からの過荷重を受けた際に変形する程度の剛性を一様に備えた剛性板として形成された。しかし、これに代えて、図5に示すようなアンダーカバー1aを用いても良い。この場合、アンダーカバー1aの上端部n2の近傍には、ほぼ横方向(紙面垂直方向)に連続して、脆弱部としてのV溝903が形成される。このV溝903は先端部123の上向きの取付け面fに結合される屈曲フランジ部102の直下位置h2であって、乗員の膝Nの高さ位置h0よりも高い位置に形成される。このため、主部101が乗員の膝Nからの過荷重Pを受けた際に、剛性が特に小さく設定されているV溝903に応力集中が生じ、他部より先に破損し、先端部123と干渉することなく車体前方に変位rし、衝撃吸収変形を確実に行うこととなる。このため、アンダーカバー1aにV溝903を設けたことにより、乗員の膝Nが受ける衝撃力をより確実に吸収し、乗員の安全性を強化することができる。
【0019】
図1のインストルメントパネル2は合成樹脂製の表皮部5と剛性の強化された内側芯部4とを一体化したものであったが、内側芯部4を板金製としても良い。あるいは、表皮部5と内側芯部4を単一の合成樹脂で成形し、そのインストルメントパネル(図示せず)にアンダーカバー1を本発明の適用された車両用アンダーカバー取付け構造を用いて取り付けるように構成してもよく、これらの場合も、図1の車両用アンダーカバー取付け構造を用いた場合と同様の作用効果を得ることができる。
図1のインストルメントパネル2は乗員との対向壁に形成された切欠部9に同部を覆うようにメータベゼル8とアンダーカバー1とを上下に装着していたが、これに代えて、メータベゼル8とアンダーカバー1の間に、更に、図示しない中間パネルが配備される場合であれば、この場合にも本発明の車両用アンダーカバー取付け構造を適用して、中間パネルをアンダーカバー基準で取り付けることができ、この場合も、図1の車両用アンダーカバー取付け構造と同様の作用効果を得られる。
【0020】
【発明の効果】
以上のように、請求項1の発明は、内側芯部の先端部の取付け面にアンダーカバーの主部の上端部の屈曲フランジを取付けると共に内側芯部の下方取付け部に主部の下部に形成された左右端取付け部を締め付け結合した。このため、先端部の下方への延出量を小さく抑え、同部を膝より上方に保持することが容易と成り、この取付け面に上端部を取り付けたアンダーカバーの乗員との対向面のほぼ全域を変形可能に形成でき、過荷重を吸収して乗員の膝が受ける衝撃力を低減させるニープロテクタとしての機能を確実に発揮させることができる。特に、アンダーカバーの主部の上端部近傍で屈曲フランジの直下位置に車幅方向に連続して溝状の脆弱部を形成したので、アンダーカバーの乗員との対向面が乗員の膝より確実に過荷重を受け変形し、その際、脆弱部が破断して過荷重を吸収して乗員の膝が受ける衝撃力をより低減させることができる。しかも、アンダーカバーの上端部の前後方向Xの位置ずれを防止し見栄えの低下を防止できる。
【0021】
請求項2の発明では、特に、内側芯部の上向きの取付け面にアンダカバーの上端部を取り付け、その上端部より上方突片を延出形成し、この上方突片にメータベゼルの下端部を取付けたので、メータベゼルの下端部がアンダカバー基準でそのアンダカバーの上端部に前後方向の位置ずれなく取付けでき、見栄えの低下を防止できる。しかも、ステアリングコラムの直下に配備されているアンダカバーの乗員との対向面のほぼ全てをニープロテクタとして機能させることができる。
【図面の簡単な説明】
【図1】本発明の一実施形態としての車両用アンダーカバー取付け構造を用いてアンダーカバーを取り付けたインストルメントパネルを示し、図3におけるA−A線の拡大断面図である。
【図2】図1中のインストルメントパネルの要部切欠斜視図である。
【図3】図1中のインストルメントパネルの概略正面図である。
【図4】図1中のインストルメントパネルとアンダーカバーの取付け部を示し、図3におけるB−B線の拡大断面図である。
【図5】本発明の他の実施形態としての車両用アンダーカバー取付け構造を用いてアンダーカバーを取り付けたインストルメントパネルの概略切欠断面図である。
【図6】従来の車両用アンダーカバー取付け構造を用いてアンダーカバーをインストルメントパネルに取り付けた状態の概略断面図である。
【符号の説明】
1 アンダーカバー
102 屈曲フランジ部(取付け面形成部)
2 インストルメントパネル
4 内側芯部
5 表皮部
9 切欠部
15 上方突片
f 上向きの取付け面
n1 メータベゼルの下端部
n2 アンダカバーの上端部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle undercover mounting structure for attaching an undercover to an instrument panel in a vehicle interior, and more particularly to an underload that is deformed and absorbs shock when subjected to an overload from an occupant's knee during a vehicle collision. The present invention relates to a vehicle undercover mounting structure for mounting a cover.
[0002]
[Prior art]
The instrument panel in the front part of the passenger compartment faces the occupant and is in a position with good operability, so that various meters, article storage units, and the like are formed here. In particular, a meter, a steering column, and the like are provided at a portion facing the driver's seat, and an under cover is often attached below them. Some of the undercovers have a function as a knee protector for protecting the occupant's knee in the event of a vehicle collision by covering the lower notch of the steering column and facing the occupant's knee.
[0003]
For example, as shown in FIG. 6, the instrument panel 100 in the front part of the passenger compartment includes a skin portion 120 having a cutout portion 110 facing the rear of the vehicle (rightward in the drawing), and the skin portion is an inner core portion 130. It is reinforced. In the inner core portion 130, a lower mounting portion 130 a of the meter 140, a lower end mounting portion 130 b of the meter bezel 150 that covers the periphery of the meter 140, and an upper end mounting portion 130 c of the under cover 160 are connected to a portion facing the notch portion 110. Is formed.
[0004]
Here, the lower end attaching portion 130b and the upper end attaching portion 130c are formed continuously in the vertical direction in the cutout portion 110 of the inner core portion 130, and the meter bezel 150 and the under cover 160 are attached to the clip C and the attachment portions 130b and 130c. The screws V are integrally connected to each other, thereby positioning the both ends of the lower end d1 of the meter bezel 150 and the upper end d2 of the under cover 160 in the front-rear direction X. An example of such a knee protector is disclosed in Utility Model Registration Publication No. 2549497.
[0005]
[Problems to be solved by the invention]
By the way, the under cover 160 constituting the knee protector receives an overload P from the occupant's knee N that shifts forward in the event of a car collision, and at that time, is deformed as indicated by a two-dot chain line, and the impact force received by the occupant's knee N It works to reduce
However, the lower end attachment portion 130b and the upper end attachment portion 130c formed in the vicinity of the notch portion 110 of the inner core portion 130 are continuously formed to extend downward, and the upper end attachment portion 130c that supports the upper end of the under cover 160 is formed in the vertical direction. Tends to be relatively low. Therefore, when the occupant's knee N is displaced forward, the knee N abuts against the attachment portion 130c via the upper end d2 of the under cover 160, and the under cover 160 for absorbing the impact force received by the occupant's knee. It will be impossible to exert the impact reduction function.
[0006]
Therefore, for example, if these positions are shifted upward so that the occupant's knee N does not interfere with the attachment portion 130b or the attachment portion 130c, the shape of the meter 140 or the meter bezel 150 needs to be changed. Further, if the rigidity of the lower end mounting portion 130b and the upper end mounting portion 130c is reduced, the lower end d1 of the meter bezel 150 supported by the lower end mounting portion 130c and the upper end d2 of the under cover are likely to be displaced in the front-rear direction X, which is attractive. The problem of deteriorating arises.
An object of the present invention is to provide a vehicular undercover mounting structure that can securely mount an undercover having a knee protector function to an instrument panel and secure an impact reduction function based on the above-described problems.
[0007]
[Means for Solving the Problems]
In order to achieve the above-described object, according to the first aspect of the present invention, an inner core portion that reinforces the outer skin portion and an outer skin portion that is formed on a wall facing the occupant and that is formed with a notch portion into which a steering column of a vehicle is fitted. When the instrument panel is disposed on the instrument panel and covers the same part at least on the lower part of the notch and the main part of the substantially rectangular plate is overloaded from the occupant's knee In a vehicle undercover mounting structure in which an undercover formed so as to be deformable is mounted , a tip portion having an upward mounting surface is formed at a portion facing the notch portion of the inner core portion, and the lower mounting portion is formed below the inner core portion, the main portion to the lower mounting portion is attached to the bent flange of the upper end portion of the main portion of the under cover the mounting surface of the distal portion Coupling tightening the left and right end mounting portion formed on the bottom and, in the under cover to form a groove-shaped fragile portion continuously in the vehicle width direction to a position directly below the bent flange at the upper end vicinity of the main portion Yes.
In this way, the bent flange at the upper end of the main part of the under cover is attached to the mounting surface at the tip of the inner core part, and the left and right end attachment parts formed at the lower part of the main part are tightened at the lower attachment part of the inner core part. Combined . For this reason, it becomes easy to hold down the amount of extension of the tip part below, and to hold the part above the knee, and it is almost the surface facing the occupant of the under cover with the upper end attached to this attachment surface. The entire region can be formed to be deformable, and the function as a knee protector that absorbs overload and reduces the impact force received by the occupant's knees can be reliably exhibited. In particular, since the groove-shaped weakened part is formed continuously in the vehicle width direction in the vicinity of the upper end of the main part of the undercover in the vehicle width direction, the surface facing the occupant of the undercover is more reliable than the occupant's knee. At that time, the fragile part breaks and absorbs the overload, and the impact force received by the occupant's knee can be further reduced. And the position shift of the front-back direction X of the upper end part of an undercover can be prevented, and the fall of appearance can be prevented.
[0008]
According to a second aspect of the present invention, in the vehicle undercover mounting structure according to the first aspect,
The upper notch of the steering column is covered with a meter bezel and the lower notch is covered with an under cover, and an upper projecting piece facing the meter bezel is extended and formed at the upper end of the under cover. The lower end of the meter bezel is attached.
In this case, in particular, the upper end portion of the under cover is attached to the upward mounting surface of the inner core portion, the upper protrusion is formed to extend from the upper end portion, and the lower end portion of the meter bezel is attached to the upper protrusion. The lower end portion of the meter bezel can be attached to the upper end portion of the under cover with reference to the under cover without any positional displacement in the front-rear direction, and deterioration in appearance can be prevented. In addition, almost all of the surface of the undercover that is disposed directly below the steering column can be made to function as a knee protector.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an instrument panel 2 to which an under cover 1 is attached using a vehicle under cover attachment structure as an embodiment of the present invention.
The instrument panel 2 is formed by integrating a skin portion 5 formed of a soft synthetic resin and an inner core portion 4 formed of a hard synthetic resin that reinforces the skin portion 5. The instrument panel 2 is provided long in the vehicle width direction Y (see FIG. 3) in the front part of the vehicle compartment (not shown), and is integrally coupled to the left and right inner panels on the body side (not shown) of the front part of the vehicle compartment. The main portion of the inner core portion 4 is fastened and coupled to the deck crossbar 3 so as to be integrally coupled to the vehicle body side.
[0010]
A cutout portion 9 is formed at a portion of the skin portion 5 facing the driver so as to be cut out upward from the lower end edge. The notch 9 has an upper portion covered with the combination meter 7 and a meter bezel 8 that covers the peripheral edge of the meter, and a lower portion covered with the under cover 1. The notch 9 is sandwiched between the meter bezel 8 and the under cover 1. A steering column 6 is fitted and arranged at a substantially central portion of the. Therefore, the opposing portions of the meter bezel 8 and the under cover 1 facing the steering column 6 are formed in a concave shape as shown in FIG. 3, and the lower end n1 of the meter bezel 8 and the upper end n2 of the under cover 1 are steering. The column 6 is formed so as to be in contact with each other on the left and right sides.
[0011]
The inner core portion 4 whose rigidity has been reinforced has a peripheral reinforcing portion 401 that reinforces the peripheral portion 501 of the cutout portion 5 at a portion facing the cutout portion 9, and a notch portion that opposes the portion located on the center side of the cutout portion 9. Part 12 is deployed. The upper end back portion of the notch facing portion 12 is bent vertically to form the mounting portion 121 of the combination meter 7 and extends from the lower end to the occupant side (right side in FIG. 1) via a stepped portion. A plate portion 122 is formed to extend. The extension plate portion 122 has a tip portion 123 as an attachment surface forming portion having an upward attachment surface f on the tip end side, and the core side notch portion 13 (see FIG. 2) in the center of the extension plate portion 122. Is formed. The steering column 6 fitted in the notch 9 and the core side notch 13 is fastened and coupled to the deck crossbar 3 via the bracket 11.
[0012]
The notch part peripheral part 501 reinforced from the back side by the peripheral reinforcing part 401 is formed with a step part in the thickness direction as shown in FIG. The step portion is formed so that the upper portion and the left and right side portions of the meter bezel 8 and the left and right side portions of the under cover 1 are fitted, and this step portion is formed between the notch peripheral portion 501 and the meter bezel 8 and the under cover 1. It is formed so that the gap can be eliminated. Note that the upper and left and right side portions of the meter bezel 8 and the left and right side portions of the under cover 1 are coupled with clips C and screws V to rectangular holes and screw holes (not shown) at respective opposing positions on the extension plate portion 122 side.
[0013]
The under cover 1 that covers the lower portion of the notch 9 is a synthetic resin material similar to the skin material 5 of the instrument panel, is formed into a substantially rectangular plate shape that is long in the vehicle width direction Y, and has a curved surface facing the occupant side. The main part 101 is provided. Further, the main portion 101 has a bent flange portion 102 extending from the left and right upper end portions n2, and an upper protruding piece 15 extending from the same portion. The main portion 101 is formed as a rigid plate that can be deformed when an overload is received from the knee N of the occupant. The bent flange portion 102 is formed so as to overlap the upward mounting surface f of the tip end portion 123. Speed screws 16 are respectively attached to a plurality of appropriate positions on the attachment surface f, and U-shaped holes g are formed at portions of the respective bent flange portions 102 facing the speed screws 16. For this reason, when the screw V inserted into the U-shaped hole g is fastened and coupled to the speed screw 16, the bent flange portion 102 of the under cover 1 can be fastened and fixed to the upward mounting surface f.
[0014]
Further, the upper projecting piece 15 extending upward from the upper end portion n2 of the undercover 1 has a base portion integrally coupled to the upper end portion n2 side, and includes a fastening hole 20 and a rectangular clip from the upper side to the lower side. A hole 18 and a positioning hole 19 are sequentially formed. The fastening hole 20 is formed so as to face the screw hole m1 of the laterally extending plate portion 122a. By screwing the screw V inserted into the fastening hole 20 into the screw hole m1, the upper projecting piece 15 and the under cover are formed. The upper end n2 can be reliably fixed to the side extending plate 122a side. The rectangular clip hole 18 is formed so that a fixing clip C attached to the back surface of the lower end portion n1 of the meter bezel can be pushed in and fitted. In addition, a concave portion q for preventing interference with the fixing clip C is formed in the side extending plate portion 122a at a portion facing the clip hole 18 on the upper protruding piece 15. The positioning hole 19 is formed so that a positioning pin 21 protruding from the back surface of the lower end portion n1 of the meter bezel 8 can be inserted without deviation.
[0015]
Next, the attachment procedure of the under cover 1 using the attachment structure of the under cover equipped in the instrument panel 2 will be described.
First, the instrument panel 2 is integrally attached to the front part of the passenger compartment via the deck cross member 3, and the steering column 6 is fitted into the notch 9 and the core side notch 13, and then the deck crossbar 3 is attached. Tightened together.
Then, the combination meter 7 is attached to the attachment portion 121 of the notch facing portion 12, and the bent flange portion 102 of the undercover 1 is overlapped on the attachment surface f of the tip portion 123, so that the U-shaped hole of the tip portion 123 is overlapped. The screw V inserted through g is fastened and coupled to each speed screw 16 to fasten the bent flange portion 102 of the under cover 1 to the upward mounting surface f. Next, the left and right end attachment portions 103 of the under cover 1 are fastened to the lower attachment portion 124 of the inner core portion 4 with screws V. Further, by screwing the screw V inserted into the tightening hole 20 of the upper protrusion 15 of the under cover 1 into the screw hole m1, the under cover 1 is attached to the side extending plate portion 122a via the upper protrusion 15. Can be tightened.
[0016]
Thereafter, a plurality of fixing clips C (see FIG. 3) of the meter bezel 8 are pressed into the rectangular clip holes 18 or other clip holes (not shown) on the mounting portion 121 of the notch facing portion 12 to form the notch portion. 9, the meter bezel 8 is securely fitted, and at the same time, the positioning pins 21 are fitted into the positioning holes 19, whereby the meter bezel 8 can be positioned with respect to the under cover 1. Thereafter, the mounting process of the instrument panel 2 to other portions is performed, and the mounting of the instrument panel to the front part of the passenger compartment is completed.
In this way, the upper end n2 of the under cover 1 is securely fixed to the distal end 123 on the side of the notch facing portion 12 having high rigidity, and the lower end of the meter bezel 8 via the upper protruding piece 15 on the upper end n2 side. n1 is securely fixed. For this reason, the lower end portion n1 of the meter bezel can be attached to the upper end portion n2 of the under cover 1 without misalignment in the front-rear direction X on the basis of the under cover, and it is possible to prevent the mutual displacement from occurring even while the vehicle is running. Decline can be prevented.
[0017]
Furthermore, as shown in FIG. 4, it is assumed that the vehicle collides while the vehicle is running, the occupant's knee N is displaced forward, and an overload P is applied to the main portion 101 of the under cover 1. At this time, the tip 123 that supports the upper end n2 of the undercover 1 merely forms the upward mounting surface f, and extends downward and faces the occupant direction (rightward on the paper surface). No attachment part 130c) at 6 is formed. For this reason, the height position h1 of the front-end | tip part 123 in the up-down direction is hold | maintained in a comparatively high position, and can keep the predetermined distance t with respect to the height position h0 of a passenger | crew's knee N. FIG. For this reason, almost the entire region of the main portion 101 of the undercover 1 is not obstructed by the distal end portion 123 of the notch portion facing portion 12 and can be deformed as shown by a two-dot chain line, and absorbs the impact force applied to the occupant's knee N. The function as a knee protector can be surely exhibited.
[0018]
In the above-mentioned place, the main portion 101 of the under cover 1 that functions as a knee protector is formed as a rigid plate that has a uniform rigidity enough to be deformed when subjected to an overload from the occupant's knee. However, instead of this, an under cover 1a as shown in FIG. 5 may be used. In this case, a V-groove 903 as a fragile portion is formed in the vicinity of the upper end portion n2 of the under cover 1a substantially continuously in the lateral direction (perpendicular to the paper surface). The V-groove 903 is formed at a position h2 immediately below the bent flange portion 102 coupled to the upward mounting surface f of the distal end portion 123 and higher than the height position h0 of the occupant's knee N. For this reason, when the main portion 101 receives an overload P from the occupant's knee N, stress concentration occurs in the V-groove 903 having a particularly small rigidity, and the tip portion 123 is damaged before the other portion. It is displaced r forward of the vehicle body without interfering with, and the shock absorbing deformation is surely performed. For this reason, by providing the V-groove 903 in the under cover 1a, the impact force received by the occupant's knees N can be more reliably absorbed and the occupant's safety can be enhanced.
[0019]
Although the instrument panel 2 in FIG. 1 is an integrated body part 5 made of synthetic resin and an inner core part 4 with enhanced rigidity, the inner core part 4 may be made of sheet metal. Alternatively, the skin portion 5 and the inner core portion 4 are molded from a single synthetic resin, and the under cover 1 is attached to the instrument panel (not shown) using the vehicle under cover attachment structure to which the present invention is applied. In these cases, it is possible to obtain the same operation and effect as in the case of using the vehicle undercover mounting structure of FIG.
In the instrument panel 2 of FIG. 1, a meter bezel 8 and an under cover 1 are mounted up and down so as to cover a notch portion 9 formed on a wall facing the occupant. If an intermediate panel (not shown) is further provided between the bezel 8 and the under cover 1, the vehicle under cover mounting structure of the present invention is applied also in this case, and the intermediate panel is based on the under cover. In this case, the same effect as that of the vehicle undercover mounting structure of FIG. 1 can be obtained.
[0020]
【The invention's effect】
As described above, according to the first aspect of the present invention, the bent flange at the upper end of the main portion of the undercover is attached to the mounting surface of the tip portion of the inner core portion, and the lower mounting portion of the inner core portion is formed at the lower portion of the main portion. The left and right end mounting portions were tightened and joined . For this reason, it becomes easy to hold down the amount of extension of the tip part below, and to hold the part above the knee, and it is almost the surface facing the occupant of the under cover with the upper end attached to this attachment surface. The entire region can be formed to be deformable, and the function as a knee protector that absorbs overload and reduces the impact force received by the occupant's knees can be reliably exhibited. In particular, since the groove-shaped weakened part is formed continuously in the vehicle width direction in the vicinity of the upper end of the main part of the undercover in the vehicle width direction, the surface facing the occupant of the undercover is more reliable than the occupant's knee. At that time, the fragile part breaks and absorbs the overload, and the impact force received by the occupant's knee can be further reduced. And the position shift of the front-back direction X of the upper end part of an undercover can be prevented, and the fall of appearance can be prevented.
[0021]
In the invention of claim 2, in particular, mounting an upper end portion of the under coverings upward the mounting surface of the inner core portion, the upper protrusion and extending formed from the upper end, a lower end portion of the meter bezel to the upward projecting piece since the mounted, the lower end portion of the meter bezel can be mounted without misalignment longitudinal position on the upper end portion of the under-coverings at the under coverings basis, the reduction in appearance can be prevented. Moreover, it is possible to function almost all the surface facing the occupant of the under coverings that are deployed just below the steering column as knee protector.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view taken along line AA in FIG. 3, showing an instrument panel with an undercover attached using a vehicle undercover attachment structure according to an embodiment of the present invention.
2 is a perspective cutaway view of a main part of the instrument panel in FIG. 1. FIG.
3 is a schematic front view of the instrument panel in FIG. 1. FIG.
4 is an enlarged cross-sectional view taken along line BB in FIG. 3, showing a mounting portion between the instrument panel and the under cover in FIG.
FIG. 5 is a schematic cutaway sectional view of an instrument panel to which an under cover is attached using a vehicle under cover attachment structure as another embodiment of the present invention.
FIG. 6 is a schematic cross-sectional view of a state in which an under cover is attached to an instrument panel using a conventional vehicle under cover attachment structure.
[Explanation of symbols]
1 Under cover 102 Bending flange (mounting surface forming part)
2 Instrument panel 4 Inner core part 5 Skin part 9 Notch part 15 Upper protrusion f Upward mounting surface n1 Lower end part n2 of meter bezel Upper end part of under cover

Claims (2)

乗員との対向壁に形成され車両のステアリングコラムを嵌挿する切欠部が形成された表皮部と表皮部を補強する内側芯部を有したインストルメントパネルを備え、同インストルメントパネルに配備され、前記切欠部の少なくとも下側部分に同部分を覆うと共に略矩形板状の主部が乗員の膝から過荷重を受けた際に変形できるように形成されたアンダーカバーを取付けるようにした車両用アンダーカバー取付け構造において、
前記内側芯部の前記切欠部との対向部に上向きの取付け面を有した先端部が形成されると共に前記内側芯部の下方に下方取付け部を形成し、前記先端部の取付け面に前記アンダーカバーの主部の上端部の屈曲フランジを取付けると共に前記下方取付け部に前記主部の下部に形成された左右端取付け部を締め付け結合し、前記アンダーカバーには前記主部の上端部近傍で前記屈曲フランジの直下位置に車幅方向に連続して溝状の脆弱部を形成したことを特徴とする車両用アンダーカバー取付け構造。
An instrument panel having an inner core portion that reinforces the outer skin portion formed on the wall facing the occupant and formed with a cutout portion into which the steering column of the vehicle is inserted, and is provided on the instrument panel. The vehicle has a substantially rectangular plate-shaped main portion attached to an under cover formed so as to be deformable when an overload is received from an occupant's knee. In the under cover mounting structure,
A tip portion having an upward mounting surface is formed at a portion of the inner core portion facing the notch portion, and a lower mounting portion is formed below the inner core portion, and the under surface is formed on the mounting surface of the tip portion. A bent flange at the upper end of the main part of the cover is attached and a left and right end attaching part formed at the lower part of the main part is fastened to the lower attaching part, and the under cover is near the upper end of the main part. A vehicular undercover mounting structure in which a groove-like fragile portion is continuously formed in the vehicle width direction at a position directly below a bent flange.
請求項1記載の車両用アンダーカバー取付け構造において、
前記ステアリングコラムの上側の切欠部をメータベゼルで下側の切欠部をアンダーカバーで覆い、前記アンダーカバーの上端部に前記メータベゼルと対向する上方突片を延出形成し、同上方突片に前記メータベゼルの下端部を取付けたことを特徴とする車両用アンダーカバー取付け構造。
The undercover mounting structure for a vehicle according to claim 1,
The upper notch of the steering column is covered with a meter bezel and the lower notch is covered with an under cover, and an upper projecting piece facing the meter bezel is extended and formed at the upper end of the under cover. A vehicle under cover mounting structure, wherein a lower end portion of the meter bezel is mounted.
JP2000073568A 2000-03-16 2000-03-16 Under cover mounting structure for vehicles Expired - Fee Related JP4174947B2 (en)

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JP5209456B2 (en) * 2008-12-15 2013-06-12 カルソニックカンセイ株式会社 Vehicle instrument mounting structure
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