JP2004216956A - Structure for preventing deformation of vehicular door - Google Patents

Structure for preventing deformation of vehicular door Download PDF

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Publication number
JP2004216956A
JP2004216956A JP2003003875A JP2003003875A JP2004216956A JP 2004216956 A JP2004216956 A JP 2004216956A JP 2003003875 A JP2003003875 A JP 2003003875A JP 2003003875 A JP2003003875 A JP 2003003875A JP 2004216956 A JP2004216956 A JP 2004216956A
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Japan
Prior art keywords
door
vehicle
width direction
vehicle width
pillar
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JP2003003875A
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Japanese (ja)
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JP4277527B2 (en
Inventor
Yukio Oka
幸雄 岡
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To suppress the bending deformation of a door without a substantial increase in weight. <P>SOLUTION: In a collision of vehicles, the rear wall part 16C of a front pillar 16 and the front wall part 12A of a front side door 12 in a door belt line part are abutted. At this time, a reinforcing member 14 in a door is made to abut on the vehicle rear side of the outside part 18B in the cross direction of a vehicle of a reinforcing member 18 in a pillar in which the strength of the inside part 18C in the cross direction of a vehicle is weaker than that of the outside part 18B in the cross direction of a vehicle, relative to the compression load in the longitudinal direction of the vehicle. Thus, a moment directed toward the inside in the cross direction of a vehicle is generated at the front part of a door belt line in the front side door 12, suppressing the bending deformation of a door. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は車両のドア変形防止構造に係り、詳しくは自動車等の車両において前突時に発生する車幅方向内側へのドア変形を防止するための車両のドア変形防止構造に関する。
【0002】
【従来の技術】
従来、自動車の構造においては、車体側のピラーにドアヒンジによってサイドドアの前端部を回動自在に支持し、このサイドドア内に車両前後方向に延びるインパクトバーの前端部をブラケットのインパクトバー接合部に接合し、このブラケットの前端のヒンジ取付接合部をヒンジパネルのヒンジ取付部に接合する一方、後端のインナパネル連結部をインナパネルの車室内壁に接合することで、側面衝突や前面衝突に対してその衝突荷重を確実に受け止める構成が知られている(例えば、特許文献1参照。)。
【0003】
【特許文献1】
特開平11−310036号公報
【0004】
【発明が解決しようとする課題】
しかしながら、このような構造では、車両が前突した際に、フロントボデーの変形によりピラーが後退すると、サイドドアが荷重を支えられなくなり、サイドドアの構造上、車幅方向内側に比べ強度が弱い車幅方向外側へ大きく曲げ変形する。また、このサイドドアのドア曲げ変形を防止するためには、サイドドアを補強する必要があり、大幅な重量増加となる。
【0005】
本発明は上記事実を考慮し、大幅な重量増加なしにドアの曲げ変形を抑制できる車両のドア変形防止構造を提供することが目的である。
【0006】
【課題を解決するための手段】
請求項1記載の本発明における車両のドア変形防止構造は、ドアベルトラインまたはその車両前方への延長線上に配設され、前突時の衝突荷重により、ドアベルトライン部の前部に車幅方向内側へ向かうモーメントを発生するモーメント発生手段を有することを特徴とする。
【0007】
従って、車両が前突した場合には、ピラーとドアベルトライン部とが当接する。この際、ドアベルトラインまたはその車両前方への延長線上に配設されたモーメント発生手段によって、前突時の衝突荷重によりサイドドアのドアベルトライン部の前部に車幅方向内側へ向かうモーメントが発生する。この結果、この車幅方向内側へ向かうモーメントにより、前突時に車幅方向外側に向かって発生すドア曲げモーメントを打ち消すことができる。このため、サイドドアのドア曲げ変形を防止するための補強を低減することができ、大幅な重量増加なしにドアの曲げ変形を抑制できる。
【0008】
請求項2記載の本発明は、請求項1に記載の車両のドア変形防止構造において、前記モーメント発生手段は、車両前後方向の圧縮荷重に対して車幅方向内側部の強度が車幅方向外側部の強度より弱いピラー内補強部材と、前記ピラー内補強部材の車幅方向内側部の車両後方側に配設されたドア内補強部材と、から成ることを特徴とする。
【0009】
従って、車両が前突した場合には、ピラーとドアベルトライン部とが当接する。この際、車両前後方向の圧縮荷重に対して、強度が車幅方向外側部より弱いピラー内補強部材の車幅方向内側部の車両後方側にドア内補強部材が当接する。この結果、ピラーの車幅方向内側部が車幅方向外側部より大きく変形することで、サイドドアのドアベルトライン部の前部に車幅方向内側へ向かうモーメントが発生し、前突時に車幅方向外側に向かって発生すドア曲げモーメントを打ち消すことができる。このため、サイドドアのドア曲げ変形を防止するための補強を低減することができ、、大幅な重量増加なしにドアの曲げ変形を抑制できる。
【0010】
請求項3記載の本発明は、請求項1、2の何れか1つに記載の車両のドア変形防止構造において、前記モーメント発生手段は、車両前後方向の圧縮荷重に対して車幅方向内側壁部の強度を車幅方向外側壁の強度より弱くしたカウルトップサイドであることを特徴とする。
【0011】
従って、車両が前突した場合には、ピラーとドアベルトライン部とが当接する。この際、車両前後方向の圧縮荷重に対して車幅方向内側壁部の強度を車幅方向外側壁の強度より弱くしたカウルトップサイドが変形し、ピラーが車両上下方向の軸を中心に後部側が車両内側に回転する。この結果、前突時の衝突荷重によりサイドアのドアベルトライン部の前部に車幅方向内側へ向かうモーメントが発生し、前突時に車幅方向外側に向かって発生すドア曲げモーメントを打ち消すことができる。このため、サイドドアのドア曲げ変形を防止するための補強を低減することができ、大幅な重量増加なしにドアの曲げ変形を抑制できる。
【0012】
請求項4記載の本発明は、請求項1、3の何れか1つに記載の車両のドア変形防止構造において、前記モーメント発生手段は、ピラー断面内の車幅方向外側部に配設されたピラー内補強部材と、ピラー断面の車幅方向内側部の車両後方側に対向するドア前壁部に配設され車両前方に突出したドア凸部と、該ドア凸部の車両後方側に配設されたドア内補強部材と、から成ることを特徴とする。
【0013】
従って、車両が前突した場合には、ピラーとドアベルトライン部とが当接する。この際、車幅方向外側部にピラー内補強部材が配設されたピラー断面の車幅方向内側部に、ドア前壁部に配設され車両前方に突出したドア凸部が、ドア凸部の車両後方側に配設されたドア内補強部材とともに当接する。この結果、ピラーの車幅方向内側部が車幅方向外側部より大きく変形することで、ドアベルトライン部の前部に車幅方向内側へ向かうモーメントが発生し、前突時に車幅方向外側に向かって発生すドア曲げモーメントを打ち消すことができる。このため、サイドドアのドア曲げ変形を防止するための補強を低減することができ、、大幅な重量増加なしにドアの曲げ変形を抑制できる。
【0014】
【発明の実施の形態】
本発明に係る車両のドア変形防止構造の第1実施形態を図1〜図6に従って説明する。
【0015】
なお、図中矢印FRは車体前方方向を、矢印INは車体内側方向を、矢印UPは車体上方方向を示す。
【0016】
図5に示される如く、本実施形態では、自動車車体10のフロントサイドドア12の内部には、ドアベルトラインL上にモーメント発生手段としてのドア内補強部材14が配設されている。また、ドアベルトラインLの車両前方への延長線上となるフロントピラー16の断面内部には、モーメント発生手段としてのピラー内補強部材18が配設されている。
【0017】
図2に示される如く、ドア内補強部材14は、車両前後方向に延設された板材で構成されており、車幅方向外側に向って凸で、車両前後方向に沿ったリブ20、22が車両上下方向に所定の間隔で形成されている。
【0018】
一方、ピラー内補強部材18は、車両前後方向から見た形状が、開口部を車幅方向内側へ向けたハット状となっており、底部となる縦壁部18Aの上下方向中央部には、車幅方向内側に向って凸で、車両前後方向に沿ったリブ24が形成されている。
【0019】
図3に示される如く、ピラー内補強部材18は、縦壁部18Aとリブ24とによって車幅方向外側部18Bの車両前後方向の圧縮荷重に対しての強度が、車幅方向内側部18Cの車両前後方向の圧縮荷重に対しての強度より強くなっている。即ち、ドア内補強部材14は、車両前後方向の圧縮荷重に対して、車幅方向内側部18Cの強度が、車幅方向外側部18Bの強度より弱くなっている。
【0020】
図1に示される如く、ドア内補強部材14はフロントサイドドア12の車幅方向内側部に配設されており、ドア内補強部材14は、ピラー内補強部材18における車幅方向内側部18Cの車両後方側に配設されている。
【0021】
なお、フロントピラー16は、車両上下方向へ延設された閉断面構造となっており、車幅方向外側壁部16A、前壁部16B、後壁部16Cの内周面に沿って車両上下方向から見た断面形状が、開口部を車幅方向内側へ向けたコ字状のリインフォースメント30が配設されている。また、フロントピラー16の車幅方向外側壁部16Aの車幅方向外側面にはドアヒンジ32のピラー側取付部32Aが固定されており、ドアヒンジ32のドア側取付部32Bは、フロントサイドドア12の前壁部12Aの前面における車幅方向外側部に固定されている。
【0022】
図5に示される如く、フロントピラー16の車両前方側には、ドアベルトラインLの車両前方への延長線上に、カウルトップサイド38が配設されている。
【0023】
図1に示される如く、カウルトップサイド38は、カウルトップサイド38の車幅方向外側部を構成するカウルトップサイドアウタ40と、カウルトップサイド38の車幅方向内側部を構成するカウルトップサイドインナ42とで構成されている。また、カウルトップサイドアウタ40の後端縁部40Aは、フロントピラー16の車幅方向外側壁部16Aの前端縁部16Dに溶着されており、カウルトップサイドインナ42の後端縁部42Aは、フロントピラー16の前フランジ16Eに溶着されている。
【0024】
次に、本実施形態の作用を説明する。
【0025】
本実施形態では、車両が前突した場合に、フロントピラー16の後壁部16Cと、フロントサイドドア12の前壁部12Aにおけるドアベルトライン部とが当接する。この際、車両前後方向の圧縮荷重に対して、強度が車幅方向外側部18Bより弱いピラー内補強部材18の車幅方向内側部18Cの車両後方側にドア内補強部材14が当接する。
【0026】
この結果、図4に示される如く、前突時の衝突荷重により、フロントサイドドア12のドアベルトライン部において、フロントピラー16の後壁部16Cとフロントサイドドア12の前壁部12Aとの当接部における車幅方向内側の部位が潰れ、フロントサイドドア12におけるドアベルトライン部の前部に車幅方向内側へ向かうモーメントM1が発生する。
【0027】
即ち、本実施形態では、図6に示される如く、前突時にフロントサイドドア12に発生する車幅方向外側に向かうドア曲げモーメントM2を、ドアベルトライン部の前部に発生する車幅方向内側へ向かうモーメントM1で打ち消すことができる。この結果、モーメントM1が発生しない場合のドア曲げモーメント入力M3(図6の破線)の特性では、ドア曲げモーメント入力M3がフロントサイドドア12の曲げ変形耐力F達しているが、本実施形態におけるドア曲げモーメント入力M(図6の実線)の特性では、ドア曲げモーメント入力Mがフロントサイドドア12の曲げ変形耐力Fより小さくなる。このため、本実施形態では、フロントサイドドア12の曲げ変形を抑制できる。
【0028】
また、本実施形態は、フロントサイドドア12を補強部材によって補強することでフロントサイドドア12の曲げ変形を抑制する場合に比べて、大幅な重量増加もない。
【0029】
次に、本発明の車両のドア変形防止構造における第2実施形態を図7及び図8に従って説明する。
【0030】
なお、第1実施形態と同一部材に付いては、同一符号を付してその説明を省略する。
【0031】
図7に示される如く、本実施形態では、カウルトップサイド38の車幅方向内側部を構成するカウルトップサイドインナ42の板厚D1が、カウルトップサイド38の車幅方向外側部を構成するカウルトップサイドアウタ40の板厚D2より薄くなっており、カウルトップサイド38の車幅方向内側壁部38Bの強度が、車幅方向外側壁部38Aの強度より弱くなっている。
【0032】
次に、本実施形態の作用を説明する。
【0033】
本実施形態では、車両が前突した場合に、フロントピラー16の後壁部16Cと、フロントサイドドア12の前壁部12Aにおけるドアベルトライン部とが当接する。この際、図8に示される如く、車両前後方向の圧縮荷重に対しての強度が、車幅方向外側壁部38Aの強度より弱くなっているカウルトップサイド38の車幅方向内側壁部38Bが、車幅方向外側壁部38Aに比べて大きく変形する。
【0034】
この結果、フロントピラー16の前部が車幅方向外側(図8の矢印A方向)へ回転し、フロントピラー16の後部が車幅方向内側(図8の矢印B方向)へ回転する。このため、フロントサイドドア12におけるドアベルトライン部の前部に車幅方向内側へ向かうモーメントM1が発生する。
【0035】
即ち、本実施形態においても、第1実施形態と同様に、図6に示される如く、前突時にフロントサイドドア12に発生する車幅方向外側に向かうドア曲げモーメントM2を、ドアベルトライン部の前部に発生する車幅方向内側へ向かうモーメントM1で打ち消すことができる。この結果、モーメントM1が発生しない場合のドア曲げモーメント入力M3(図6の破線)の特性では、ドア曲げモーメント入力M3がフロントサイドドア12の曲げ変形耐力F達しているが、本実施形態におけるドア曲げモーメント入力M(図6の実線)の特性では、ドア曲げモーメント入力Mがフロントサイドドア12の曲げ変形耐力Fより小さくなる。このため、本実施形態では、フロントサイドドア12の曲げ変形を抑制できる。
【0036】
また、本実施形態は、フロントサイドドア12を補強部材によって補強することでフロントサイドドア12の曲げ変形を抑制する場合に比べて、大幅な重量増加もない。
【0037】
次に、本発明の車両のドア変形防止構造における第3実施形態を図9及び図10に従って説明する。
【0038】
なお、第1実施形態と同一部材に付いては、同一符号を付してその説明を省略する。
【0039】
図9に示される如く、本実施形態では、フロントサイドドア12の前壁部12Aにおけるドア内補強部材14の車両前方側となる部位に、車両先方へ突出した凸部50が形成されている。また、ピラー内補強部材18は、ドア内補強部材14の車両前方への延長線Sより、車幅方向外側に配設されており、車両前後方向の圧縮荷重に対してのフロントピラー16の車幅方向内側部16Fの強度が、車幅方向外側部16Gの強度より弱くなっている。
【0040】
次に、本実施形態の作用を説明する。
【0041】
本実施形態では、車両が前突した場合に、フロントピラー16の後壁部16Cと、フロントサイドドア12の前壁部12Aにおけるドアベルトライン部とが当接する。この際、車両前後方向の圧縮荷重に対して、車幅方向内側部16Fの強度が、車幅方向外側部16Gの強度より弱くなっているフロントピラー16に、図10に示される如く、フロントサイドドア12の前壁部12Aに形成した凸部50が食い込む。このため、ピラー内補強部材18からフロントサイドドア12の前壁部12Aにおけるドア内補強部材14より車幅方向外側となる部位に、車両前方から車両後方へ向かう荷重(図10の矢印K)が作用する。
【0042】
この結果、フロントサイドドア12におけるドアベルトライン部の前部に車幅方向内側へ向かうモーメントM1が発生する。
【0043】
即ち、本実施形態においても、第1実施形態と同様に、図6に示される如く、前突時にフロントサイドドア12に発生する車幅方向外側に向かうドア曲げモーメントM2を、ドアベルトライン部の前部に発生する車幅方向内側へ向かうモーメントM1で打ち消すことができる。この結果、モーメントM1が発生しない場合のドア曲げモーメント入力M3(図6の破線)の特性では、ドア曲げモーメント入力M3がフロントサイドドア12の曲げ変形耐力F達しているが、本実施形態におけるドア曲げモーメント入力M(図6の実線)の特性では、ドア曲げモーメント入力Mがフロントサイドドア12の曲げ変形耐力Fより小さくなる。このため、本実施形態では、フロントサイドドア12の曲げ変形を抑制できる。
【0044】
また、本実施形態は、フロントサイドドア12を補強部材によって補強することでフロントサイドドア12の曲げ変形を抑制する場合に比べて、大幅な重量増加もない。
【0045】
以上に於いては、本発明を特定の実施形態について詳細に説明したが、本発明はかかる実施形態に限定されるものではなく、本発明の範囲内にて他の種々の実施形態が可能であることは当業者にとって明らかであり、例えば、モーメント発生手段は、上記実施形態に限定されず、第1実施形態と第2実施形態または第2実施形態と第3実施形態とを組み合わせても良い。
【0046】
また、本発明の車両のドア変形防止構造は、センタピラーと該センタピラーに取付けられたリヤサイドドアにも適用可能である。
【0047】
【発明の効果】
請求項1記載の本発明における車両のドア変形防止構造は、ドアベルトラインまたはその車両前方への延長線上に配設され、前突時の衝突荷重により、ドアベルトライン部の前部に車幅方向内側へ向かうモーメントを発生するモーメント発生手段を有するため、大幅な重量増加なしにドアの曲げ変形を抑制できるという優れた効果を有する。
【0048】
請求項2記載の本発明は、請求項1に記載の車両のドア変形防止構造において、モーメント発生手段は、車両前後方向の圧縮荷重に対して車幅方向内側部の強度が車幅方向外側部の強度より弱いピラー内補強部材と、ピラー内補強部材の車幅方向内側部の車両後方側に配設されたドア内補強部材と、から成るため、大幅な重量増加なしにドアの曲げ変形を抑制できるという優れた効果を有する。
【0049】
請求項3記載の本発明は、請求項1、2の何れか1つに記載の車両のドア変形防止構造において、モーメント発生手段は、車両前後方向の圧縮荷重に対して車幅方向内側壁部の強度を車幅方向外側壁の強度より弱くしたカウルトップサイドであるため、大幅な重量増加なしにドアの曲げ変形を抑制できるという優れた効果を有する。
【0050】
請求項4記載の本発明は、請求項1、3の何れか1つに記載の車両のドア変形防止構造において、モーメント発生手段は、ピラー断面内の車幅方向外側部に配設されたピラー内補強部材と、ピラー断面の車幅方向内側部の車両後方側に対向するドア前壁部に配設され車両前方に突出したドア凸部と、ドア凸部の車両後方側に配設されたドア内補強部材と、から成るため、大幅な重量増加なしにドアの曲げ変形を抑制できるという優れた効果を有する。
【図面の簡単な説明】
【図1】図5の1−1線に沿った拡大断面図である。
【図2】本発明の第1実施形態に係る車両のドア変形防止構造を示す車両斜め前方外側から見た斜視図である。
【図3】図1の3−3線に沿った断面図である。
【図4】本発明の第1実施形態に係る車両のドア変形防止構造の作用説明図である。
【図5】本発明の第1実施形態に係る車両のドア変形防止構造が適用された車両の一部を示す概略側面図である。
【図6】ドアの長手方向位置とドア曲げモーメントとの関係を示すグラフである。
【図7】本発明の第2実施形態に係る車両のドア変形防止構造を示す図1に対応する断面図である。
【図8】本発明の第2実施形態に係る車両のドア変形防止構造の作用説明図である。
【図9】本発明の第3実施形態に係る車両のドア変形防止構造を示す図1に対応する断面図である。
【図10】本発明の第3実施形態に係る車両のドア変形防止構造の作用説明図である。
【符号の説明】
12 フロントサイドドア
14 ドア内補強部材(モーメント発生手段)
16 フロントピラー
18 ピラー内補強部材(モーメント発生手段)
38 カウルトップサイド(モーメント発生手段)
38A カウルトップサイドの車幅方向外側壁
38B カウルトップサイドの車幅方向内側壁部
50 フロントサイドドアの凸部(モーメント発生手段)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door deformation preventing structure for a vehicle, and more particularly to a vehicle door deformation preventing structure for preventing door deformation inward in the vehicle width direction that occurs at the time of a front collision in a vehicle such as an automobile.
[0002]
[Prior art]
Conventionally, in the structure of an automobile, the front end portion of the side door is rotatably supported by a pillar on the vehicle body side by a door hinge, and the front end portion of the impact bar extending in the vehicle front-rear direction in the side door is connected to the impact bar joint portion of the bracket. The front and rear hinge mounting joints are joined to the hinge panel hinge mounting joints, while the rear panel inner panel joint is joined to the inner panel interior wall so that side and front collisions occur. On the other hand, a configuration for reliably receiving the collision load is known (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP-A-11-310036 [0004]
[Problems to be solved by the invention]
However, in such a structure, if the pillar moves backward due to deformation of the front body when the vehicle collides forward, the side door cannot support the load, and the side door structure is weaker than the inner side in the vehicle width direction. Bends greatly outward in the vehicle width direction. Further, in order to prevent the side door from being bent, it is necessary to reinforce the side door, which greatly increases the weight.
[0005]
In view of the above facts, an object of the present invention is to provide a vehicle door deformation prevention structure capable of suppressing the bending deformation of the door without a significant increase in weight.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, the door deformation preventing structure for a vehicle according to the present invention is disposed on the door belt line or an extension extending forward of the vehicle. It has a moment generating means for generating a moment inward in the direction.
[0007]
Therefore, when the vehicle collides forward, the pillar and the door belt line portion come into contact with each other. At this time, the moment generating means arranged on the door belt line or the extension line to the front of the vehicle causes a moment inward in the vehicle width direction to the front part of the door belt line part of the side door due to the collision load at the time of the front collision. Occur. As a result, the moment toward the inner side in the vehicle width direction can cancel the door bending moment generated toward the outer side in the vehicle width direction at the time of the front collision. For this reason, the reinforcement for preventing door side bending deformation of the side door can be reduced, and bending deformation of the door can be suppressed without a significant increase in weight.
[0008]
According to a second aspect of the present invention, in the vehicle door deformation preventing structure according to the first aspect, the moment generating means has a strength in an inner portion in the vehicle width direction with respect to a compressive load in the vehicle front-rear direction. The reinforcing member in the pillar is weaker than the strength of the part, and the reinforcing member in the door disposed on the vehicle rear side of the inner side in the vehicle width direction of the in-pillar reinforcing member.
[0009]
Therefore, when the vehicle collides forward, the pillar and the door belt line portion come into contact with each other. At this time, with respect to the compressive load in the vehicle front-rear direction, the in-door reinforcing member abuts on the vehicle rear side of the in-pillar reinforcing member whose strength is weaker than the outer side in the vehicle width direction. As a result, the inner side in the vehicle width direction of the pillar is deformed to be larger than the outer side in the vehicle width direction, and a moment toward the inner side in the vehicle width direction is generated at the front part of the door belt line part of the side door. The door bending moment generated toward the outside in the direction can be canceled out. For this reason, the reinforcement for preventing door side bending deformation of the side door can be reduced, and bending deformation of the door can be suppressed without significant increase in weight.
[0010]
According to a third aspect of the present invention, in the vehicle door deformation preventing structure according to any one of the first and second aspects, the moment generating means is a vehicle widthwise inner wall against a compressive load in the vehicle longitudinal direction. It is a cowl top side in which the strength of the part is weaker than the strength of the outer wall in the vehicle width direction.
[0011]
Therefore, when the vehicle collides forward, the pillar and the door belt line portion come into contact with each other. At this time, the cowl top side in which the strength of the inner side wall portion in the vehicle width direction is weaker than the strength of the outer side wall in the vehicle width direction against the compressive load in the vehicle longitudinal direction is deformed, and the rear side of the pillar is centered on the vehicle vertical direction axis. Rotates inside the vehicle. As a result, a moment toward the inner side in the vehicle width direction is generated at the front part of the door belt line portion of the side door due to the collision load at the time of the front collision, and the door bending moment generated toward the outer side in the vehicle width at the time of the front collision can be canceled. it can. For this reason, the reinforcement for preventing door side bending deformation of the side door can be reduced, and bending deformation of the door can be suppressed without a significant increase in weight.
[0012]
According to a fourth aspect of the present invention, in the vehicle door deformation preventing structure according to any one of the first and third aspects, the moment generating means is disposed on the outer side in the vehicle width direction within the pillar cross section. A reinforcing member in the pillar, a door convex portion that is disposed on the front wall of the door facing the vehicle rear side in the vehicle width direction inside section of the pillar, and that protrudes forward of the vehicle, and is disposed on the vehicle rear side of the door convex portion. And a door internal reinforcing member.
[0013]
Therefore, when the vehicle collides forward, the pillar and the door belt line portion come into contact with each other. At this time, the door convex portion disposed on the front wall of the door and projecting forward of the vehicle on the inner side portion of the pillar cross section in which the pillar inner reinforcing member is disposed on the outer portion in the vehicle width direction is the door convex portion. It abuts together with the in-door reinforcing member disposed on the vehicle rear side. As a result, the inner side in the vehicle width direction of the pillar is deformed to a greater extent than the outer side in the vehicle width direction, and a moment toward the inner side in the vehicle width direction is generated at the front part of the door belt line part. It is possible to cancel the door bending moment that is generated. For this reason, the reinforcement for preventing door side bending deformation of the side door can be reduced, and bending deformation of the door can be suppressed without significant increase in weight.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
A vehicle door deformation preventing structure according to a first embodiment of the present invention will be described with reference to FIGS.
[0015]
In the figure, the arrow FR indicates the vehicle body front direction, the arrow IN indicates the vehicle body inner side direction, and the arrow UP indicates the vehicle body upward direction.
[0016]
As shown in FIG. 5, in the present embodiment, an in-door reinforcing member 14 as a moment generating means is disposed on the door belt line L inside the front side door 12 of the automobile body 10. Further, an in-pillar reinforcing member 18 as a moment generating means is disposed inside the cross section of the front pillar 16 that is an extension of the door belt line L to the front of the vehicle.
[0017]
As shown in FIG. 2, the in-door reinforcing member 14 is made of a plate material extending in the vehicle front-rear direction, and protrudes outward in the vehicle width direction, and has ribs 20 and 22 along the vehicle front-rear direction. It is formed at a predetermined interval in the vehicle vertical direction.
[0018]
On the other hand, the pillar reinforcing member 18 has a hat shape in which the opening is directed inward in the vehicle width direction as seen from the vehicle front-rear direction, and the vertical wall portion 18A serving as the bottom portion has A rib 24 is formed that protrudes inward in the vehicle width direction and extends in the vehicle longitudinal direction.
[0019]
As shown in FIG. 3, the pillar internal reinforcing member 18 has a strength against a compressive load in the vehicle longitudinal direction of the vehicle width direction outer side portion 18B by the vertical wall portion 18A and the rib 24 of the vehicle width direction inner side portion 18C. It is stronger than the strength against compressive load in the vehicle longitudinal direction. That is, in the door reinforcing member 14, the strength of the vehicle width direction inner side portion 18C is weaker than the strength of the vehicle width direction outer side portion 18B with respect to the compressive load in the vehicle longitudinal direction.
[0020]
As shown in FIG. 1, the door inner reinforcing member 14 is disposed on the inner side in the vehicle width direction of the front side door 12, and the door inner reinforcing member 14 is arranged on the inner side 18 </ b> C in the vehicle width direction of the pillar inner reinforcing member 18. It is arranged on the vehicle rear side.
[0021]
The front pillar 16 has a closed cross-sectional structure extending in the vehicle vertical direction, and the vehicle vertical direction along the inner peripheral surfaces of the vehicle width direction outer wall portion 16A, the front wall portion 16B, and the rear wall portion 16C. A U-shaped reinforcement 30 having a cross-sectional shape viewed from the side with its opening directed inward in the vehicle width direction is disposed. Further, the pillar side mounting portion 32A of the door hinge 32 is fixed to the vehicle width direction outer side surface of the vehicle width direction outer side wall portion 16A of the front pillar 16, and the door side mounting portion 32B of the door hinge 32 is connected to the front side door 12. It is fixed to the outer side in the vehicle width direction on the front surface of the front wall portion 12A.
[0022]
As shown in FIG. 5, on the vehicle front side of the front pillar 16, a cowl top side 38 is disposed on an extension line of the door belt line L toward the vehicle front.
[0023]
As shown in FIG. 1, the cowl top side 38 includes a cowl top side outer 40 that forms an outer portion in the vehicle width direction of the cowl top side 38, and a cowl top side inner that forms an inner portion in the vehicle width direction of the cowl top side 38. 42. The rear end edge portion 40A of the cowl top side outer 40 is welded to the front end edge portion 16D of the outer wall portion 16A in the vehicle width direction of the front pillar 16, and the rear end edge portion 42A of the cowl top side inner 42 is The front pillar 16 is welded to the front flange 16E.
[0024]
Next, the operation of this embodiment will be described.
[0025]
In the present embodiment, when the vehicle collides forward, the rear wall portion 16C of the front pillar 16 and the door belt line portion of the front wall portion 12A of the front side door 12 come into contact with each other. At this time, the door reinforcing member 14 abuts against the vehicle rear side of the vehicle width direction inner side portion 18C of the pillar inner reinforcing member 18 whose strength is weaker than the vehicle width direction outer side portion 18B with respect to the compressive load in the vehicle longitudinal direction.
[0026]
As a result, as shown in FIG. 4, due to the collision load at the time of the front collision, in the door belt line portion of the front side door 12, the contact between the rear wall portion 16 </ b> C of the front pillar 16 and the front wall portion 12 </ b> A of the front side door 12. A portion on the inner side in the vehicle width direction at the contact portion is crushed, and a moment M1 toward the inner side in the vehicle width direction is generated at the front portion of the door belt line portion of the front side door 12.
[0027]
That is, in this embodiment, as shown in FIG. 6, the door bending moment M2 generated in the front side door 12 in the front side door 12 at the time of the front collision is generated in the vehicle width direction inner side generated in the front part of the door belt line part. It can be canceled out by the moment M1 toward. As a result, in the characteristic of the door bending moment input M3 (the broken line in FIG. 6) when the moment M1 does not occur, the door bending moment input M3 reaches the bending deformation resistance F of the front side door 12, but the door in this embodiment In the characteristic of the bending moment input M (solid line in FIG. 6), the door bending moment input M is smaller than the bending deformation resistance F of the front side door 12. For this reason, in this embodiment, the bending deformation of the front side door 12 can be suppressed.
[0028]
Further, in the present embodiment, the front side door 12 is reinforced by the reinforcing member, so that there is no significant increase in weight compared to the case where bending deformation of the front side door 12 is suppressed.
[0029]
Next, a second embodiment of the vehicle door deformation preventing structure according to the present invention will be described with reference to FIGS.
[0030]
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0031]
As shown in FIG. 7, in this embodiment, the plate thickness D1 of the cowl top side inner 42 constituting the inner side portion of the cowl top side 38 in the vehicle width direction is the cowl constituting the outer side portion of the cowl top side 38 in the vehicle width direction. It is thinner than the plate thickness D2 of the top side outer 40, and the strength of the vehicle width direction inner side wall portion 38B of the cowl top side 38 is weaker than the strength of the vehicle width direction outer side wall portion 38A.
[0032]
Next, the operation of this embodiment will be described.
[0033]
In the present embodiment, when the vehicle collides forward, the rear wall portion 16C of the front pillar 16 and the door belt line portion of the front wall portion 12A of the front side door 12 come into contact with each other. At this time, as shown in FIG. 8, the inner side wall portion 38B in the vehicle width direction of the cowl top side 38 whose strength against the compressive load in the vehicle longitudinal direction is weaker than the strength of the outer wall portion 38A in the vehicle width direction. The outer wall portion 38A in the vehicle width direction is greatly deformed.
[0034]
As a result, the front portion of the front pillar 16 rotates outward in the vehicle width direction (in the direction of arrow A in FIG. 8), and the rear portion of front pillar 16 rotates inward in the vehicle width direction (in the direction of arrow B in FIG. 8). For this reason, the moment M1 which goes to the vehicle width direction inner side generate | occur | produces in the front part of the door belt line part in the front side door 12. FIG.
[0035]
That is, also in the present embodiment, as in the first embodiment, as shown in FIG. 6, the door bending moment M2 generated in the front side door 12 at the time of the front collision toward the outside in the vehicle width direction is applied to the door belt line portion. It can be canceled by a moment M1 generated at the front and directed inward in the vehicle width direction. As a result, in the characteristic of the door bending moment input M3 (the broken line in FIG. 6) when the moment M1 does not occur, the door bending moment input M3 reaches the bending deformation resistance F of the front side door 12, but the door in this embodiment In the characteristic of the bending moment input M (solid line in FIG. 6), the door bending moment input M is smaller than the bending deformation resistance F of the front side door 12. For this reason, in this embodiment, the bending deformation of the front side door 12 can be suppressed.
[0036]
Further, in the present embodiment, the front side door 12 is reinforced by the reinforcing member, so that there is no significant increase in weight compared to the case where bending deformation of the front side door 12 is suppressed.
[0037]
Next, a third embodiment of the vehicle door deformation preventing structure of the present invention will be described with reference to FIGS.
[0038]
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0039]
As shown in FIG. 9, in the present embodiment, a convex portion 50 that protrudes toward the front of the vehicle is formed at a portion of the front wall portion 12 </ b> A of the front side door 12 on the front side of the door reinforcing member 14. Further, the in-pillar reinforcing member 18 is disposed on the outer side in the vehicle width direction from the extension line S of the in-door reinforcing member 14 toward the front of the vehicle, and the vehicle of the front pillar 16 with respect to the compressive load in the vehicle front-rear direction. The strength of the width direction inner portion 16F is weaker than the strength of the vehicle width direction outer portion 16G.
[0040]
Next, the operation of this embodiment will be described.
[0041]
In the present embodiment, when the vehicle collides forward, the rear wall portion 16C of the front pillar 16 and the door belt line portion of the front wall portion 12A of the front side door 12 come into contact with each other. At this time, the front pillar 16 in which the strength of the vehicle width direction inner portion 16F is weaker than the strength of the vehicle width direction outer portion 16G with respect to the compressive load in the vehicle front-rear direction, as shown in FIG. The convex part 50 formed in the front wall part 12A of the door 12 bites in. For this reason, a load (arrow K in FIG. 10) from the front of the vehicle toward the rear of the vehicle is applied from the in-pillar reinforcing member 18 to the outside of the in-door reinforcing member 14 in the front wall portion 12A of the front side door 12 in the vehicle width direction. Works.
[0042]
As a result, a moment M1 is generated at the front portion of the door belt line portion of the front side door 12 toward the inside in the vehicle width direction.
[0043]
That is, also in the present embodiment, as in the first embodiment, as shown in FIG. 6, the door bending moment M2 generated in the front side door 12 at the time of the front collision toward the outside in the vehicle width direction is applied to the door belt line portion. It can be canceled by a moment M1 generated at the front and directed inward in the vehicle width direction. As a result, in the characteristic of the door bending moment input M3 (the broken line in FIG. 6) when the moment M1 does not occur, the door bending moment input M3 reaches the bending deformation resistance F of the front side door 12, but the door in this embodiment In the characteristic of the bending moment input M (solid line in FIG. 6), the door bending moment input M is smaller than the bending deformation resistance F of the front side door 12. For this reason, in this embodiment, the bending deformation of the front side door 12 can be suppressed.
[0044]
Further, in the present embodiment, the front side door 12 is reinforced by the reinforcing member, so that there is no significant increase in weight compared to the case where bending deformation of the front side door 12 is suppressed.
[0045]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is obvious to those skilled in the art that, for example, the moment generating means is not limited to the above-described embodiment, and the first embodiment and the second embodiment or the second embodiment and the third embodiment may be combined. .
[0046]
Further, the vehicle door deformation preventing structure of the present invention can be applied to a center pillar and a rear side door attached to the center pillar.
[0047]
【The invention's effect】
According to the first aspect of the present invention, the door deformation preventing structure for a vehicle according to the present invention is disposed on the door belt line or an extension extending forward of the vehicle. Since there is a moment generating means for generating a moment toward the inside in the direction, it has an excellent effect that bending deformation of the door can be suppressed without significant increase in weight.
[0048]
According to a second aspect of the present invention, in the vehicle door deformation preventing structure according to the first aspect, the moment generating means is configured such that the strength of the inner portion in the vehicle width direction is the outer portion in the vehicle width direction with respect to the compressive load in the vehicle longitudinal direction. Since the inner reinforcing member of the pillar is weaker than the strength of the inner reinforcing member and the inner reinforcing member of the door disposed on the rear side of the vehicle in the vehicle width direction of the inner reinforcing member of the pillar, the bending deformation of the door without significant increase in weight is achieved. It has an excellent effect that it can be suppressed.
[0049]
According to a third aspect of the present invention, in the vehicle door deformation preventing structure according to any one of the first and second aspects, the moment generating means is an inner wall portion in the vehicle width direction against a compressive load in the longitudinal direction of the vehicle. Since the cowl top side has a lower strength than the strength of the outer wall in the vehicle width direction, it has an excellent effect that the bending deformation of the door can be suppressed without a significant increase in weight.
[0050]
According to a fourth aspect of the present invention, in the vehicle door deformation preventing structure according to any one of the first and third aspects, the moment generating means is a pillar disposed on the outer side in the vehicle width direction within the pillar cross section. An inner reinforcing member, a door convex portion that is disposed on the front wall of the door facing the vehicle rear side of the inner side in the vehicle width direction of the pillar section, and is disposed on the vehicle rear side of the door convex portion. Since it is composed of a door internal reinforcing member, it has an excellent effect that bending deformation of the door can be suppressed without significant increase in weight.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view taken along line 1-1 of FIG.
FIG. 2 is a perspective view showing the vehicle door deformation preventing structure according to the first embodiment of the present invention as seen from the obliquely forward outer side of the vehicle.
3 is a cross-sectional view taken along line 3-3 in FIG.
FIG. 4 is an operation explanatory view of the vehicle door deformation preventing structure according to the first embodiment of the present invention.
FIG. 5 is a schematic side view showing a part of the vehicle to which the vehicle door deformation preventing structure according to the first embodiment of the present invention is applied.
FIG. 6 is a graph showing the relationship between the longitudinal position of the door and the door bending moment.
FIG. 7 is a cross-sectional view corresponding to FIG. 1, showing a door deformation preventing structure for a vehicle according to a second embodiment of the present invention.
FIG. 8 is an operation explanatory diagram of a vehicle door deformation preventing structure according to a second embodiment of the present invention.
FIG. 9 is a cross-sectional view corresponding to FIG. 1 showing a vehicle door deformation preventing structure according to a third embodiment of the present invention.
FIG. 10 is an operation explanatory view of a vehicle door deformation preventing structure according to a third embodiment of the present invention.
[Explanation of symbols]
12 Front side door 14 Reinforcing member in the door (moment generating means)
16 Front pillar 18 Reinforcement member in pillar (moment generating means)
38 cowl top side (moment generating means)
38A Outer wall in the vehicle width direction on the cowl top side 38B Inner side wall portion in the vehicle width direction on the cowl top side 50 Convex portion of the front side door (moment generating means)

Claims (4)

ドアベルトラインまたはその車両前方への延長線上に配設され、前突時の衝突荷重により、ドアベルトライン部の前部に車幅方向内側へ向かうモーメントを発生するモーメント発生手段を有することを特徴とする車両のドア変形防止構造。It is disposed on the door belt line or an extension line forward of the vehicle, and has a moment generating means for generating a moment inward in the vehicle width direction at the front portion of the door belt line portion due to a collision load at the time of a front collision. The vehicle door deformation prevention structure. 前記モーメント発生手段は、車両前後方向の圧縮荷重に対して車幅方向内側部の強度が車幅方向外側部の強度より弱いピラー内補強部材と、前記ピラー内補強部材の車幅方向内側部の車両後方側に配設されたドア内補強部材と、から成ることを特徴とする請求項1に記載の車両のドア変形防止構造。The moment generating means includes a pillar inner reinforcing member whose strength in the vehicle width direction inner side is weaker than the strength in the vehicle width direction outer side with respect to the compressive load in the vehicle longitudinal direction, and a vehicle inner side direction portion of the pillar inner reinforcing member. The door deformation preventing structure for a vehicle according to claim 1, comprising: a door internal reinforcement member disposed on the vehicle rear side. 前記モーメント発生手段は、車両前後方向の圧縮荷重に対して車幅方向内側壁部の強度を車幅方向外側壁の強度より弱くしたカウルトップサイドであることを特徴とする請求項1、2の何れか1つに記載の車両のドア変形防止構造。2. The cowl top side according to claim 1, wherein the moment generating means is a cowl top side in which the strength of the inner wall portion in the vehicle width direction is weaker than the strength of the outer wall in the vehicle width direction against a compressive load in the vehicle longitudinal direction. The door deformation preventing structure for a vehicle according to any one of the above. 前記モーメント発生手段は、ピラー断面内の車幅方向外側部に配設されたピラー内補強部材と、ピラー断面の車幅方向内側部の車両後方側に対向するドア前壁部に配設され車両前方に突出したドア凸部と、該ドア凸部の車両後方側に配設されたドア内補強部材と、から成ることを特徴とする請求項1、3の何れか1つに記載の車両のドア変形防止構造。The moment generating means is disposed on a pillar in-pillar reinforcing member disposed on the outer side in the vehicle width direction within the pillar cross section, and on a vehicle front wall portion facing the vehicle rear side on the inner side in the vehicle width direction on the pillar cross section. 4. The vehicle according to claim 1, comprising: a door convex portion protruding forward; and a door internal reinforcing member disposed on the vehicle rear side of the door convex portion. Door deformation prevention structure.
JP2003003875A 2003-01-10 2003-01-10 Vehicle door deformation prevention structure Expired - Fee Related JP4277527B2 (en)

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JP2006213246A (en) * 2005-02-04 2006-08-17 Toyota Motor Corp Vehicle body structure
JP2008137495A (en) * 2006-12-01 2008-06-19 Toyota Industries Corp Door mounting pillar
JP2009179290A (en) * 2008-02-01 2009-08-13 Honda Motor Co Ltd Automobile body side structure
JP2009184672A (en) * 2009-05-25 2009-08-20 Toyota Motor Corp Vehicle body side structure
JP2010047188A (en) * 2008-08-22 2010-03-04 Daihatsu Motor Co Ltd Belt line part structure of automobile
JP2013095229A (en) * 2011-10-31 2013-05-20 Daihatsu Motor Co Ltd Pillar structure of automobile
JP2014169032A (en) * 2013-03-04 2014-09-18 Mazda Motor Corp Vehicle door structure
JP2017197058A (en) * 2016-04-28 2017-11-02 マツダ株式会社 Side part vehicle body structure of vehicle

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Publication number Priority date Publication date Assignee Title
JP2006213246A (en) * 2005-02-04 2006-08-17 Toyota Motor Corp Vehicle body structure
JP4525374B2 (en) * 2005-02-04 2010-08-18 トヨタ自動車株式会社 Body structure
JP2008137495A (en) * 2006-12-01 2008-06-19 Toyota Industries Corp Door mounting pillar
JP2009179290A (en) * 2008-02-01 2009-08-13 Honda Motor Co Ltd Automobile body side structure
JP2010047188A (en) * 2008-08-22 2010-03-04 Daihatsu Motor Co Ltd Belt line part structure of automobile
JP2009184672A (en) * 2009-05-25 2009-08-20 Toyota Motor Corp Vehicle body side structure
JP4715948B2 (en) * 2009-05-25 2011-07-06 トヨタ自動車株式会社 Body side structure
JP2013095229A (en) * 2011-10-31 2013-05-20 Daihatsu Motor Co Ltd Pillar structure of automobile
JP2014169032A (en) * 2013-03-04 2014-09-18 Mazda Motor Corp Vehicle door structure
JP2017197058A (en) * 2016-04-28 2017-11-02 マツダ株式会社 Side part vehicle body structure of vehicle
CN107336748A (en) * 2016-04-28 2017-11-10 马自达汽车株式会社 The sidepiece body structure of vehicle
US10526020B2 (en) 2016-04-28 2020-01-07 Mazda Motor Corporation Side body structure of vehicle

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