JP3622266B2

JP3622266B2 - Rear structure of the car body

Info

Publication number: JP3622266B2
Application number: JP14474495A
Authority: JP
Inventors: 雅幸高光; 正信福島
Original assignee: Mazda Motor Corp
Current assignee: Mazda Motor Corp
Priority date: 1995-06-12
Filing date: 1995-06-12
Publication date: 2005-02-23
Anticipated expiration: 2020-02-23
Also published as: JPH08332975A

Description

【０００１】
【産業上の利用分野】
本発明は、車体側壁のドア開口部をスライドドアで開閉するワゴン車等の車体の後部構造に関し、特に後部衝突対策に係わる。
【０００２】
【従来の技術】
従来より、ワゴン車等の車両において、例えば特開平３−２４８９１４号公報に開示されるように、車体側壁にドア開口部を形成し、該ドア開口部をスライドドアで開閉するようにしたスライドドア構造を備えたものは知られている。そして、このスライドドア構造においては、通常、ドア開口部の上縁及び下縁にそれぞれガイドレールを設けるとともに、第３のガイドレールを車体側壁外面のドア開口部後縁から車体後端部にまで延ばして設け、これらのガイドレールによってスライドドアを前後方向にガイドするようになっている。また、ドア開口部より後方の車体側壁は、外面を形成するアウタパネルと、車室内面を形成するインナパネルとからなる。
【０００３】
上記インナパネルは、ドア開口部後縁に位置するピラーを構成する前側ピラー部と、車体後端のピラーを構成する後側ピラー部と、上記両ピラー部の上端部同士を連結しかつクォータウインド開口部の上縁を構成する上側連結部と、両ピラー部の中間部同士を連結しかつクォータウインド開口部の下縁を構成する中間連結部と、両ピラー部の下端部同士を連結する下側連結部とを有している。ここで、中間連結部と下側連結部とを連続して設けず、その間に開口部を形成しているのは、インナパネルひいては車体の軽量化を図るためである。また、インナパネルにおいては、アウタパネルに設けられるガイドレールの剛性を高めるために、後側ピラー部の中間連結部と下側連結部との間の部位からアウタパネル側に延びて該アウタパネルのガイドレール後端固定部を支持するガイドレール支持部を形成することが一般に行われている。
【０００４】
【発明が解決しようとする課題】
ところが、上記のスライドドア構造を備える車両では、後方車両が追突するなどの後部衝突時に上記第３のガイドレールが梁として機能し、車体後端のピラーに作用する衝撃力が該ガイドレールを介してそのままドア開口部後縁のピラーに伝わり、該ピラーがスライドドアをドア開口部に挟みこむように高さ方向中間部で折曲する変形を生じ、それにより、スライドドアが開け難くなるという問題がある。特に、この問題は、インナパネルにガイドレール支持部を形成してガイドレールの剛性を高めたものに顕著である。
【０００５】
本発明はかかる点に鑑みてなされたものであり、その目的とするところは、後部衝突時の衝撃力によりドア開口部後縁のピラーが変形するのを抑制し、あるいは該ピラーが変形してもスライドドアをドア開口部に挟み込まない構成とすることにより、後部衝突時にスライドドアが開け難くなるのを防止するものである。
【０００６】
【課題を解決するための手段】
上記目的を達成するため、本発明は、下記のような車体の後部構造を前提とする。車体側壁にドア開口部が形成され、該ドア開口部を開閉するスライドドアが車体側壁外面のドア開口部後縁から車体後端部にまで延設されたガイドレールに沿って前後方向にスライド可能に設けられており、上記ドア開口部より後方の車体側壁内面を形成するインナパネルは、ドア開口部後縁に位置するピラーを構成する前側ピラー部と、車体後端のピラーを構成する後側ピラー部と、上記両ピラー部の上端部同士を連結しかつクォータウインド開口部の上縁を構成する上側連結部と、両ピラー部の中間部同士を連結しかつクォータウインド開口部の下縁を構成する中間連結部と、両ピラー部の下端部同士を連結する下側連結部と、上記後側ピラー部の中間連結部と下側連結部との間の部位から車体側壁外面側に延びて該車体側壁外面のガイドレール後端固定部を支持するガイドレール支持部とを有する。
【０００７】
そして、請求項１に係る発明は、上記インナパネルのガイドレール支持部に脆弱部を形成し、該脆弱部によりガイドレール支持部の後部衝突時に作用する後方荷重に対する剛性をドア開口部後縁のピラーのそれよりも低くする構成とする。
【０００８】
請求項２及び３に係る発明は、いずれも請求項１記載の車体の後部構造において、上記脆弱部の具体的を示す。つまり、請求項２に係る発明では、上記脆弱部は、ガイドレール支持部の外縁を切り欠いた切欠部であり、請求項３に係る発明では、上記脆弱部は、ガイドレール支持部の上下方向に延びるビード部である。
【０００９】
請求項４に係る発明は、前提となる車体の後部構造において、上記車体後端のピラー及び上記インナパネルのガイドレール支持部の少なくとも一方を、上記ドア開口部後縁のピラーよりも後部衝突時に作用する後方荷重に対する剛性が低くなるようにし、上記インナパネルのガイドレール支持部を、車体側壁外面に切離し手段を介して連結して、該切離し手段によりガイドレール支持部の後部衝突時に作用する後方荷重に対する剛性がドア開口部後縁のピラーのそれよりも低くする構成とする。
【００１０】
請求項５に係る発明は、請求項４記載の車体の後部構造において、上記切離し手段の具体例を示す。つまり、上記切離し手段は、ガイドレール支持部の先端部に形成されたボルト孔と、該ボルト孔と連続してガイドレール支持部に形成されかつ幅寸法がボルト孔の径より大きいスリットと、上記ボルト孔を通してガイドレール支持部と車体側壁外面とを所定の締結力で締結するボルト及びナットとからなる構成とする。
【００１１】
請求項６に係る発明は、前提となる車体の後部構造において、上記車体後端のピラーに脆弱部を形成し、該脆弱部により車体後端のピラーの後部衝突時に作用する後方荷重に対する剛性をドア開口部後縁のピラーのそれよりも低くする構成とする。
【００１２】
請求項７及び８に係る発明は、いずれも請求項６記載の車体の後部構造において、上記脆弱部の具体例を示す。つまり、請求項７に係る発明では、上記脆弱部は、インナパネルの後側ピラー部のガイドレール高さ付近に設けた孔であり、請求項８に係る発明では、上記脆弱部は、車体後端のピラーに設けられたレインフォースメントのガイドレール高さ付近に設けた孔である。
【００１３】
請求項９に係る発明は、請求項８記載の車体の後部構造において、上記レインフォースメントの後縁を、車体後端のピラーを構成するインナパネルの後側ピラー部とアウタパネルとの接合部にこれらに挟んで接合する一方、レインフォースメントの前縁を上記後側ピラー部に接合する構成とする。
【００１４】
請求項１０に係る発明は、請求項６記載の車体の後部構造において、上記ドア開口部後縁のピラーにレインフォースメントを設け、上記車体後端のピラーの後部衝突時に作用する後方荷重に対する剛性を、上記レインフォースメントで補強されたドア開口部後縁のピラーのそれよりも低くする構成とする。
【００１５】
請求項１１及び１２に係る発明は、いずれも請求項１０記載の車体の後部構造において、上記レインフォースメントをより具体的に示す。つまり、請求項１１に係る発明では、上記レインフォースメントは、ドア開口部後縁のピラーにおけるインナパネルの中間連結部延長線付近でピラー内を仕切るように設けられており、請求項１２に係る発明では、上記レインフォースメントは、ドア開口部後縁のピラーを構成するインナパネルの前側ピラー部の下部から下側連結部に跨ってインナパネルに接合されている。
【００１６】
請求項１３に係る発明は、前提となる車体の後部構造において、ドア開口部後縁のピラーの高さ方向中間部に、ストライカレインフォースメントを設け、上記ドア開口部後縁のピラーに、スライドドアの閉時に該スライドドアの後端に対向する部位に車幅外方に向って車体後方に傾斜する傾斜面を形成し、上記傾斜面を、上記ストライカレインフォースメントの配置箇所にのみ設ける構成とする。
【００１７】
請求項１４に係る発明は、前提となる車体の後部構造において、上記車体後端のピラー及び上記インナパネルのガイドレール支持部の少なくとも一方を、上記ガイドレールよりも後部衝突時に作用する後方荷重に対する剛性が低くなるように設けるとともに、上記ドア開口部後縁のピラーを、上記ガイドレールよりも後部衝突時に作用する後方荷重に対する剛性が高くなるように設ける構成とする。
【００１８】
請求項１５に係る発明は、前提となる車体の後部構造において、上記ガイドレール支持部にその外縁を切り欠いた切欠部を形成するとともに、上記インナパネルの後側ピラー部のガイドレール高さ付近に孔を設ける。また、上記車体後端のピラーに第１のレインフォースメントを設け、該レインフォースメントの後縁を、車体後端のピラーを構成するインナパネルの後側ピラー部とアウタパネルとの接合部にこれらに挟んで接合する一方、レインフォースメントの前縁を上記後側ピラー部に接合し、レインフォースメントのガイドレール高さ付近に孔を設ける。上記ドア開口部後縁のピラーに、インナパネルの中間連結部延長線付近でピラー内を仕切る第２のレインフォースメントを設けるとともに、インナパネルの前側ピラー部の下部から下側連結部に跨ってインナパネルに接合される第３のレインフォースメントを設ける。さらに上記ドア開口部後縁のピラーに、スライドドアの閉時に該スライドドアの後端に対向する部位に車幅外方に向って車体後方に傾斜する傾斜面を形成する構成とする。
【００１９】
【作用】
上記の構成により、請求項１及び６に係る発明では、後部衝突時には、剛性の低い車体後端のピラー及びインナパネルのガイドレール支持部が衝撃力を受けて変形し、それにより衝撃力を吸収低減することになり、この低減した衝撃力が車体側壁外面のガイドレールを介してドア開口部後縁のピラーに伝わったとしても該ピラーの剛性は比較的高いため、ピラーがスライドドアをドア開口部に挟みこむように折曲変形してスライドドアが開き難くなることはない。
【００２０】
請求項９に係る発明では、上記車体後端のピラーは、その車室内面側つまりインナパネル側がレインフォースメントにより補強されているため、後部衝突の衝撃力を受けたときには補強されていない車体側壁外面側つまりアウタパネル側でより変形し、全体として車室内面側に大きく変形し、それにより、衝撃吸収を効果的に発揮できるとともに、衝撃力が車体後端のピラーから車体側壁外面のガイドレールに伝わり難くなる。
【００２１】
請求項１３に係る発明では、後部衝突時の衝撃力が車体後端のピラー側から車体側壁外面のガイドレールを介してドア開口部後縁のピラーに伝わり、該ピラーの高さ方向中間部が前方に折曲変形する際、ドア開口部後縁のピラーに形成した傾斜面によりスライドドアの後端が車幅外方にガイドされ、スライドドアがピラーの変形に伴ってドア開口部に挟まれることが防止され、スライドドアが開き難くなることはない。
【００２２】
請求項１３に係る発明では、上記傾斜面は、ドア開口部後縁のピラーの高さ方向中間部つまりピラーが前方に折曲変形する個所にのみ形成されているに過ぎず、外観等への影響は殆どない。
【００２３】
請求項１４に係る発明でも、請求項１に係る発明と同じく、後部衝突時には、剛性の低い車体後端のピラー及びインナパネルのガイドレール支持部が変形して衝撃力を吸収低減するとともに、この低減した衝撃力を剛性の高いドア開口部後縁のピラーでもって充分に抗することができ、該ピラーが折曲変形してスライドドアが開き難くなることはない。
【００２４】
請求項１５に係る発明では、インナパネルのガイドレール支持部に切欠部を形成するとともに、インナパネルの後側ピラー部のガイドレール高さ付近に孔を設けることにより、インナパネルのガイドレール支持部及び車体後端のピラーの剛性が低くなっているため、この両者により後部衝突時の衝撃力を吸収低減することができる。また、車体後端のピラーは、その車室内面側つまりインナパネル側が第１のレインフォースメントにより補強されているため、後部衝突の衝撃力を受けたときには補強されていない車体側壁外面側つまりアウタパネル側でより変形し、全体として車室内面側に大きく変形し、それにより、衝撃吸収を効果的に発揮できるとともに、衝撃力が車体後端のピラーから車体側壁外面のガイドレールに伝わり難くなる。しかも、上記第１のレインフォースメントのガイドレール高さ付近にも孔を設けることにより、車体後端のピラーの後部衝突時の衝撃力に対する剛性を極力低くして衝撃吸収効果を可及的に高めるようになっている。一方、ドア開口部後縁のピラーに、インナパネルの中間連結部延長線付近でピラー内を仕切る第２のレインフォースメントを設けるとともに、インナパネルの前側ピラー部の下部から下側連結部に跨ってインナパネルに接合される第３のレインフォースメントを設けることにより、該ピラーの剛性が高くなっているため、衝撃力が車体側壁外面のガイドレールを介してピラーに伝わっても該ピラーがスライドドアをドア開口部に挟みこむように折曲変形することはない。仮にピラーが折曲変形した時でも、該ピラーに形成した傾斜面によりスライドドアの後端が車幅外方にガイドされ、スライドドアがピラーの変形に伴ってドア開口部に挟まれることが防止され、スライドドアが開き難くなることはない。
【００２５】
【実施例】
以下、本発明の実施例を図面に基づいて説明する。
【００２６】
図１は本発明の一実施例に係る後部構造を備えるワゴン車の車体側面を示し、１は車体側壁であり、該車体側壁１には前側からＡピラー（フロントピラー）２、Ｂピラー３、Ｃピラー４及びＤピラー（リヤピラー）５が設けられている。車体側壁１のＢピラー３とＣピラー４との間にはドア開口部６が形成され、該ドア開口部６を開閉するスライドドア７（図１０参照）は、ドア開口部６の上縁及び下縁に各々沿って設けられたガイドレール（図示せず）、及び車体側壁１外面（後述するリヤフェンダ１１）のドア開口部６後縁のＣピラー４から車体後端のＤピラー５近傍にまで延設されたガイドレール８に沿って前後方向にスライド可能に設けられている。
【００２７】
上記ドア開口部６より後方の車体側壁１は、その外面を形成するアウタパネルとしてのリヤフェンダ１１と、車室内面を形成するインナパネルとしてのクォータパネル１２（図２参照）とからなり、該車体側壁１の上部にはクォータウインド開口部１３が形成されている。上記クォータパネル１２は、図２に示すように、Ｃピラー４を構成する前側ピラー部１２ａと、Ｄピラー５を構成する後側ピラー部１２ｂと、上記両ピラー部１２ａ，１２ｂの上端部同士を連結しかつクォータウインド開口部１３の上縁を構成する上側連結部１２ｃと、両ピラー部１２ａ，１２ｂの中間部同士を連結しかつクォータウインド開口部１３の下縁を構成する中間連結部１２ｄと、両ピラー部１２ａ，１２ｂの下端部同士を連結する下側連結部１２ｅとを有している。ここで、上記中間連結部１２ｄと下側連結部１２ｅとを連続して設けず、その間に開口部１４を形成しているのは、クォータパネル１２ひいては車体の軽量化を図るためである。また、クォータパネル１２においては、リヤフェンダ１１に設けられるガイドレール８の剛性を高めるために、後側ピラー部１２ｂの中間連結部１２ｄと下側連結部１２ｅとの間の部位からリヤフェンダ１１側に延びて該リヤフェンダ１１のガイドレール８後端固定部を支持するガイドレール支持部１２ｆが形成されており、該ガイドレール支持部１２ｆの先端部は、図３に示すように、ガイドレール８をリヤフェンダ１１に固定するボルト及びナット１５によりリヤフェンダ１１に共締めされている。
【００２８】
そして、上記クォータパネル１２のガイドレール支持部１２ｆの基端部には、ガイドレール支持部１２ｆの後部衝突時に作用する後方荷重に対する剛性をガイドレール８のそれよりも低くするための脆弱部として、外縁を切り欠いた切欠部２１が形成されているとともに、クォータパネル１２の下側連結部１２ｅには、ガイドレール支持部１２ｆの先端下方の位置に車体フロア側の変形との実長差を吸収するために、上縁を切り欠いた切欠部２２が形成されている。
【００２９】
上記Ｄピラー５は、図３及び図４にも示すように、その外面がリヤフェンダ１１により、車室内面がクォータパネル１２の後側ピラー部１２ｂによりそれぞれ構成されており、その内部には、クォータウインド開口部１３の上下方向中間部から下端にまで延びるレインフォースメント２３が配置されている（図２参照）。該レインフォースメント２３の後縁は、リヤフェンダ１１とクォータパネル１２の後側ピラー部１２ｂとの接合部にこれらに挟まれて接合されている一方、レインフォースメント２３の前縁はクォータパネル１２に接合されている。Ｄピラー５には、その後部衝突時に作用する後方荷重に対する剛性をガイドレール８のそれよりも低くするための脆弱部として、図２に示すように上記後側ピラー部１２ｂのガイドレール８高さ付近に各々上下に長い２つの長孔２４，２４が設けられているとともに、図４に示すように上記レインフォースメント２３のガイドレール８高さ付近に上下に長い長孔２５が設けられている。
【００３０】
一方、上記Ｃピラー４は、Ｄピラー５と同様に、その外面がリヤフェンダ１１により、車室内面がクォータパネル１２の前側ピラー部１２ａによりそれぞれ構成されている。Ｃピラー４には、その後部衝突時に作用する後方荷重に対する剛性をガイドレール８のそれよりも高くするために、図２、図５〜図８に示すように、クォータパネル１２の前側ピラー部１２ａの下部から下側連結部１２ｅに跨ってレインフォースメント３１が設けられ、該レインフォースメント３１はクォータパネル１２に接合されている。また、Ｃピラー４の高さ方向中間部（クォータパネル１２の中間連結部１２ｄの延長線上）にはストライカレインフォースメント３２が設けられ、該ストライカレインフォースメント３２は、図９〜図１１に示すように、Ｃピラー４の前後方向ではリヤフェンダ１１に略沿って延びかつクォータパネル１２の前側ピラー部１２ａとの間に上下方向に延びる閉断面を構成するようになっており、ストライカレインフォースメント３２の前縁はリヤフェンダ１１とクォータパネル１２の前側ピラー部１２ａとの接合部にこれらに挟まれて接合されている一方、ストライカレインフォースメント３２の後縁はクォータパネル１２の前側ピラー部１２ａに接合されている。
【００３１】
さらに、上記Ｃピラー４の高さ方向中間部には、上記レインフォースメント３１と同じくＣピラー４の後部衝突時に作用する後方荷重に対する剛性をガイドレール８のそれよりも高くするためのレインフォースメントとして、ストライカレインフォースメント３２の上下方向中間部及び下端部でそれぞれＣピラー４内（詳しくはストライカレインフォースメント３２とクォータパネル１２の前側ピラー部１２ａとの間の閉断面内）を仕切る上側仕切部材３３及び下側仕切部材３４が設けられている。上側仕切部材３３は、図１２に拡大詳示するように、水平部３３ａと、該水平部３３ａの車外側縁部を下方に折曲げてなりかつストライカレインフォースメント３２に接合される接合フランジ部３３ｂと、水平部３３ａの車内側縁部を略直角に上方に折曲げてなる垂直フランジ部３３ｃとからなる。また、下側仕切部材３４は、図１３に拡大詳示するように、水平部３４ａと、該水平部３４ａの車外側縁部を上方に折曲げてなりかつストライカレインフォースメント３２に接合される接合フランジ部３４ｂと、水平部３４ａの車内側縁部を略直角に下方に折曲げてなる垂直フランジ部３４ｃとからなる。
【００３２】
上記上側仕切部材３４の下側でストライカレインフォースメント３２とリヤフェンダ１１との重合部には、図９及び図１０に示すように、スライドドア７をロックするロック装置のストライカ３５が取付けられている。上記スライドドア７の閉時該スライドドア７の外面とリヤフェンダ１１とは略面一になるように設けられているとともに、スライドドア７の閉時に該スライドドア７の後端（ドアインナパネルとドアアウタパネルとのトリミング部）７ａに対応するリヤフェンダ１１の部位には、車幅外方に向って車体後方に傾斜する傾斜面３６が形成され、該傾斜面３６は、ストライカレインフォースメント３２の配置個所つまりＣピラー４の高さ方向中間部にのみ設けられている。
【００３３】
したがって、上記実施例においては、クォータパネル１２のガイドレール支持部１２ｆに切欠部２１を形成するとともに、クォータパネル１２の後側ピラー部１２ｂのガイドレール高さ付近に長孔２４を設けることにより、クォータパネル１２のガイドレール支持部１２ｆ及びＤピラー５の剛性が低くなっているため、後部衝突時には上記Ｄピラー５及びガイドレール支持部１２ｆが変形して衝撃力を吸収低減することができる。また、Ｄピラー５は、その車室内面側つまりクォータパネル１２側がレインフォースメント２３により補強されているため、後部衝突の衝撃力を受けたときには、図３に仮想線で示すように、補強されていないリヤフェンダ１１側でより変形し、全体として車室内面側に大きく変形し、それにより、衝撃吸収を効果的に発揮できるとともに、衝撃力がＤピラー５からリヤフェンダ１１のガイドレール８に伝わり難くなる。しかも、上記レインフォースメント２３のガイドレール高さ付近に長孔２５が設けられているため、Ｄピラー５の後部衝突時の衝撃力に対する剛性を極力低くすることができ、衝撃吸収効果を可及的に高めることができる。
【００３４】
一方、ドア開口部６後縁のＣピラー４に、従来公知のストライカレインフォースメント３２とは別に、該ストライカレインフォースメント３２とクォータパネル１２の前側ピラー部１２ａとの間の閉断面内を仕切る上下２つの仕切部材３３，３４を設けるとともに、クォータパネル１２の前側ピラー部１２ａの下部から下側連結部１２ｅに跨ってクォータパネル１２に接合されるレインフォースメント３１を設けることにより、Ｃピラー４の剛性が高くなっているため、上述の如く後部衝突時の衝撃力が効果的に吸収低減されることと相俟って、衝撃力がリヤフェンダ１１のガイドレール８を介してＣピラー４に伝わっても該Ｃピラー４がスライドドア７をドア開口部６に挟みこむように折曲変形することはない。仮にＣピラー４が折曲変形した時でも、該Ｃピラー４に形成した傾斜面３６によりスライドドア７の後端７ａが車幅外方にガイドされるので、スライドドア７がＣピラー４の変形に伴ってドア開口部６に挟まれることを確実に防止することができ、スライドドア７が開き難くなることはなく、後部衝突時での乗員の脱出という安全性を確保することができる。
【００３５】
その上、上記傾斜面３６は、Ｃピラー４の高さ方向中間部つまりピラー４が後部衝突時の衝撃力をガイドレール８を介して受けて前方に折曲変形する個所にのみ形成されているに過ぎないので、外観等へ悪影響を及ぼすことはない。
【００３６】
尚、本発明は上記実施例に限定されるものではなく、その他種々の変形例を包含するものである。例えは、上記実施例では、クォータパネル１２のガイドレール支持部１２ｆの剛性を、ガイドレール８及びＣピラー４の剛性をよりも低くするために、ガイドレール支持部１２ｆの基端部にその外縁を切り欠いた切欠部２１を形成したが、この切欠部２１に代る脆弱部として、例えば図１４に示すように、ガイドレール支持部１２ｆに上下方向に延びるビード部４１を形成してもよい。この場合、後部衝突時には仮想線で示す如く上記ビード部４１でクォータパネル１３のガイドレール支持部１２ｆ及び後側ピラー部１２ｂが車室内側に折曲変形して衝撃力を吸収する。
【００３７】
また、図１５及び図１６に示す変形例では、上記ガイドレール支持部１２ｆを、リヤフェンダ１１に切離し手段４２を介して連結して、該切離し手段４２によりガイドレール支持部１２ｆの後部衝突時に作用する後方荷重に対する剛性をガイドレール８及びＣピラー４の剛性をよりも低くするようにしている。上記切離し手段４２は、ガイドレール支持部１２ｆの先端部に形成されたボルト孔４３と、該ボルト孔４３と連続してガイドレール支持部１２ｆに形成されかつ幅寸法がボルト孔４３の径より大きいスリット４４と、上記ボルト孔４３を通してガイドレール支持部１２ｆとリヤフェンダ１１とを所定の締結力で締結するボルト及びナット４５とからなる。そして、後部衝突時には、ボルト及びナット４５の締結位置がボルト孔４３側からスリット４４側にずれ、仮想線で示す如くＤピラー５全体が車室内側に変形して衝撃力を吸収する。
【００３８】
さらに、上記実施例では、クォータパネル１２のガイドレール支持部１２ｆ及びＤピラー５にそれぞれ脆弱部である切欠部２１及び長孔２４を形成しているが、場合によっては、クォータパネル１２のガイドレール支持部１２ｆ及びＤピラー５のいずれか一方にのみ脆弱部を形成するだけでもよい。
【００３９】
【発明の効果】
以上の如く、請求項１〜１２、１４に係る発明によれば、いずれも後部衝突時には、剛性の低い車体後端のピラー及びインナパネルのガイドレール支持部が変形して衝撃力を吸収低減することができるとともに、この低減した衝撃力を剛性の高いドア開口部後縁のピラーでもって充分に抗することができるので、該ピラーが折曲変形してスライドドアが開き難くなることを防止することができ、安全性の向上を図ることができる。
【００４０】
特に、請求項９に係る発明では、上記車体後端のピラーは、そのインナパネル側がレインフォースメントにより補強されているため、後部衝突の衝撃力を受けたときには補強されていない車体側壁外面側でより変形し、全体として車室内面側に大きく変形するようになるので、衝撃吸収を効果的に発揮できるとともに、衝撃力が車体後端のピラーから車体側壁外面のガイドレールに伝わり難くすることができ、その結果、後部衝突時にドア開口部後縁のピラーの変形によりスライドドアが開き難くなることをより確実に防止することができる。
【００４１】
請求項１３に係る発明によれば、後部衝突時の衝撃力によりドア開口部後縁のピラーがその高さ方向中間部で前方に折曲変形する際、該ピラーに形成した傾斜面によりスライドドアの後端が車幅外方にガイドされるので、スライドドアがピラーの変形に伴ってドア開口部に挟まれてスライドドアが開き難くなるのを防止することができ、安全性の向上を図ることができる。
【００４２】
請求項１３に係る発明では、上記傾斜部を、ドア開口部後縁の高さ方向中間部つまりピラーが前方に折曲変形する個所にのみ形成するに過ぎないので、外観等への影響を防止できるという効果をも有する。
【００４３】
請求項１５に係る発明によれば、後部衝突時の衝撃力を車体後端のピラー及びインナパネルのガイドレール支持部での変形により効果的に吸収低減することができるとともに、この低減した衝撃力を、レインフォースメントで効果的に補強したドア開口部後縁のピラーでもって充分に抗することができるので、該ピラーが折曲変形するのを防止することができ、しかも、ピラーが折曲変形した時でも、該ピラーに形成した傾斜面によりスライドドアの後端が車幅外方にガイドされるので、スライドドアがピラーの変形に伴ってドア開口部に挟まれてスライドドアが開き難くなるのを確実に防止することができ、安全性の向上を図ることができる。
【図面の簡単な説明】
【図１】本発明の実施例に係る後部構造を備えるワゴン車の車体側面を示す図である。
【図２】クォータパネルをリヤフェンダとの取付け側から見た図である。
【図３】図１のＡ−Ａ線における拡大断面図である。
【図４】図１のＢ−Ｂ線における拡大断面図である。
【図５】レインフォースメントの正面図である。
【図６】レインフォースメントの組付け状態における図５のＣ−Ｃ線に沿った拡大断面図である。
【図７】同じく図５のＤ−Ｄ線に沿った拡大断面図である。
【図８】同じく図５のＥ−Ｅ線に沿った拡大断面図である。
【図９】ストライカレインフォースメントの斜視図である。
【図１０】図１のＦ−Ｆ線における拡大断面図である。
【図１１】図１のＧ−Ｇ線における拡大断面図である。
【図１２】上側仕切部材の斜視図である。
【図１３】下側仕切部材の斜視図である。
【図１４】変形例を示す図３相当図である。
【図１５】別の変形例を示す図３相当図である。
【図１６】同変形例におけるガイドレール支持部の先端部の拡大図である。
【符号の説明】
１車体側壁
４Ｃピラー（ドア開口部後縁のピラー）
５Ｄピラー（車体後端のピラー）
６ドア開口部
７スライドドア
８ガイドレール
１１リヤフェンダ（アウタパネル）
１２クォータパネル（インナパネル）
１２ａ前側ピラー部
１２ｂ後側ピラー部
１２ｃ上側連結部
１２ｄ中間連結部
１２ｅ下側連結部
１２ｆガイドレール支持部
１３クォータウインド開口部
２１切欠部（脆弱部）
２３レインフォースメント
２４，２５長孔（脆弱部）
３１レインフォースメント
３３，３４仕切部材（レインフォースメント）
３６傾斜面
４１ビード部（脆弱部）
４２切離し手段
４３ボルト孔
４４スリット
４５ボルト及びナット[0001]
[Industrial application fields]
The present invention relates to a rear structure of a vehicle body such as a wagon car that opens and closes a door opening on a side wall of the vehicle body with a sliding door, and particularly relates to countermeasures for rear collision.
[0002]
[Prior art]
Conventionally, in a vehicle such as a wagon car, as disclosed in, for example, Japanese Patent Laid-Open No. 3-248914, a sliding door in which a door opening is formed in a vehicle body side wall and the door opening is opened and closed by a sliding door. Those with a structure are known. In this sliding door structure, usually, guide rails are provided at the upper edge and the lower edge of the door opening, respectively, and the third guide rail is extended from the rear edge of the door opening to the rear end of the vehicle body side wall. The slide doors are provided so as to be guided in the front-rear direction by these guide rails. Further, the vehicle body side wall behind the door opening is composed of an outer panel that forms the outer surface and an inner panel that forms the vehicle interior surface.
[0003]
The inner panel connects the front pillar portion constituting the pillar located at the rear edge of the door opening, the rear pillar portion constituting the pillar at the rear end of the vehicle body, and the upper end portions of both pillar portions, and the quarter window. The upper connecting part that forms the upper edge of the opening, the intermediate connecting part that connects the middle parts of both pillar parts and the lower edge of the quarter window opening, and the lower part that connects the lower ends of both pillar parts And a side connecting portion. Here, the reason why the intermediate connection portion and the lower connection portion are not provided continuously and the opening is formed between them is to reduce the weight of the inner panel and the vehicle body. Further, in the inner panel, in order to increase the rigidity of the guide rail provided in the outer panel, the inner panel extends from the portion between the intermediate connecting portion and the lower connecting portion of the rear pillar portion to the outer panel side, and the rear of the outer panel guide rail. In general, a guide rail support portion for supporting the end fixing portion is formed.
[0004]
[Problems to be solved by the invention]
However, in a vehicle having the above sliding door structure, the third guide rail functions as a beam at the time of a rear collision such as a rear vehicle colliding, and the impact force acting on the pillar at the rear end of the vehicle body is transmitted through the guide rail. This is transmitted to the pillar at the rear edge of the door opening as it is, and the pillar is bent at the middle in the height direction so that the sliding door is sandwiched between the door opening, which makes it difficult to open the sliding door. is there. In particular, this problem is significant in the case where the guide rail support portion is formed on the inner panel to increase the rigidity of the guide rail.
[0005]
The present invention has been made in view of such a point, and an object of the present invention is to prevent the pillar at the rear edge of the door opening from being deformed by an impact force at the time of a rear collision, or to deform the pillar. Further, by adopting a configuration in which the slide door is not sandwiched between the door openings, the slide door is prevented from being difficult to open at the time of a rear collision.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is based on the following rear structure of a vehicle body. A door opening is formed on the side wall of the vehicle body, and a sliding door that opens and closes the door opening can slide in the front-rear direction along a guide rail that extends from the rear edge of the door opening to the rear end of the vehicle body. The inner panel that forms the inner surface of the side wall of the vehicle body behind the door opening is a front pillar portion that constitutes a pillar located at the rear edge of the door opening portion, and a rear side that constitutes a pillar at the rear end of the vehicle body A pillar part, an upper connection part that connects the upper ends of both pillar parts and constitutes the upper edge of the quarter window opening part, a middle part of both pillar parts, and a lower edge of the quarter window opening part. An intermediate connecting portion to be configured, a lower connecting portion for connecting lower ends of both pillar portions, and a portion between the intermediate connecting portion and the lower connecting portion of the rear pillar portion extending to the outer surface side of the vehicle body side wall. Guy on the outer side wall of the vehicle body And a guide rail support for supporting the rail rear fixing part.
[0007]
According to the first aspect of the present invention, a weak portion is formed in the guide rail support portion of the inner panel, and the weakness portion provides a rigidity against a rear load acting at the rear collision of the guide rail support portion. The structure is lower than that of the pillar.
[0008]
Claim 2 as well as 3 Any of the inventions related to 1 In the rear structure of the described vehicle body, the specifics of the fragile portion are shown. That is, the claim 2 In the invention according to claim 1, the weakened portion is a cutout portion formed by cutting out an outer edge of the guide rail support portion. 3 In the invention which concerns on the above, the said weak part is a bead part extended in the up-down direction of a guide rail support part.
[0009]
Claim 4 The invention according to In the rear structure of the vehicle body as a premise, at least one of the pillar at the rear end of the vehicle body and the guide rail support portion of the inner panel has lower rigidity against a rear load acting at the time of rear collision than the pillar at the rear edge of the door opening. To be The guide rail support part of the inner panel is connected to the outer surface of the side wall of the vehicle body via a disconnecting means, and the rigidity against the rear load acting at the rear collision of the guide rail support part by the disconnecting means is It is set as the structure made lower than that.
[0010]
Claim 5 The invention according to claim 4 In the rear structure of the vehicle body described, a specific example of the above-mentioned separating means will be shown. That is, the separating means includes a bolt hole formed at the tip end portion of the guide rail support portion, a slit formed in the guide rail support portion continuously with the bolt hole and having a width dimension larger than the diameter of the bolt hole, The guide rail support portion and the vehicle body side wall outer surface are configured by bolts and nuts that are fastened with a predetermined fastening force through the bolt holes.
[0011]
Claim 6 The invention according to In the rear structure of the vehicle body, A fragile portion is formed in the pillar at the rear end of the vehicle body, and the fragile portion makes the rigidity against the rear load acting at the rear collision of the pillar at the rear end of the vehicle body lower than that of the pillar at the rear edge of the door opening.
[0012]
Claim 7 as well as 8 Any of the inventions related to 6 The specific example of the said weak part is shown in the rear part structure of the described vehicle body. That is, the claim 7 In the invention according to claim 1, the weakened portion is a hole provided in the vicinity of the guide rail height of the rear pillar portion of the inner panel, 8 In the present invention, the weakened portion is a hole provided in the vicinity of the height of the guide rail of the reinforcement provided in the pillar at the rear end of the vehicle body.
[0013]
Claim 9 The invention according to claim 8 In the rear structure of the vehicle body described above, the rear edge of the reinforcement is joined to the joint portion between the rear pillar portion of the inner panel and the outer panel constituting the pillar at the rear end of the vehicle body, while the reinforcement The front edge is joined to the rear pillar portion.
[0014]
Claim 10 The invention according to claim 6 In the rear structure of the vehicle body described above, a door is provided with a reinforcement in the pillar at the rear edge of the door opening, and the rigidity of the rear load acting upon the rear collision of the pillar at the rear end of the vehicle body is reinforced by the reinforcement It is set as the structure made lower than that of the pillar of an opening part rear edge.
[0015]
Claim 11 as well as 12 Any of the inventions related to 10 In the rear structure of the described vehicle body, the reinforcement is more specifically shown. That is, the claim 11 In the invention according to claim 1, the reinforcement is provided so as to partition the inside of the pillar in the vicinity of the intermediate connecting portion extension line of the inner panel in the pillar at the rear edge of the door opening. 12 In the invention according to this aspect, the reinforcement is joined to the inner panel from the lower part of the front pillar portion of the inner panel constituting the pillar at the rear edge of the door opening to the lower connecting portion.
[0016]
Claim 13 The invention according to the present invention is based on the rear structure of the vehicle body, A striker reinforcement is provided in the middle of the height direction of the pillar at the rear edge of the door opening, On the pillar at the rear edge of the door opening, an inclined surface that is inclined toward the rear of the vehicle body toward the outer side of the vehicle width is formed at a portion facing the rear end of the sliding door when the sliding door is closed, Provide the inclined surface only at the location where the striker reinforcement is located The configuration.
[0017]
Claim 14 In the rear structure of the vehicle body as a premise, at least one of the pillar at the rear end of the vehicle body and the guide rail support portion of the inner panel is lower in rigidity against a rear load acting at the time of a rear collision than the guide rail. In addition, the pillar at the rear edge of the door opening is provided so as to have higher rigidity against a rear load acting at the time of a rear collision than the guide rail.
[0018]
Claim 15 According to the present invention, in the rear structure of the vehicle body that is a premise, the guide rail support portion is formed with a notched portion having a notched outer edge, and a hole is formed near the guide rail height of the rear pillar portion of the inner panel. Provide. In addition, a first reinforcement is provided on the pillar at the rear end of the vehicle body, and the rear edge of the reinforcement is connected to the joint between the rear pillar portion of the inner panel and the outer panel constituting the pillar at the rear end of the vehicle body. On the other hand, the front edge of the reinforcement is joined to the rear pillar portion, and a hole is provided in the vicinity of the height of the guide rail of the reinforcement. The pillar at the rear edge of the door opening is provided with a second reinforcement that partitions the inside of the pillar in the vicinity of the intermediate connecting part extension line of the inner panel, and extends from the lower part of the front pillar part of the inner panel to the lower connecting part. A third reinforcement joined to the inner panel is provided. Further, the pillar at the rear edge of the door opening is formed with an inclined surface that inclines toward the rear of the vehicle body toward the outside of the vehicle width at a portion facing the rear end of the slide door when the slide door is closed.
[0019]
[Action]
With the above configuration, claim 1 And 6 In the invention according to the invention, at the time of a rear collision, the pillar at the rear end of the vehicle body having low rigidity and the guide rail support portion of the inner panel are deformed by receiving an impact force, thereby absorbing and reducing the impact force. Even if the force is transmitted to the pillar at the rear edge of the door opening via the guide rail on the outer surface of the vehicle body side wall, the pillar has a relatively high rigidity, so that the pillar bends and deforms so that the sliding door is sandwiched in the door opening. The sliding door does not become difficult to open.
[0020]
Claim 9 In the invention according to the present invention, the pillar at the rear end of the vehicle body is reinforced by reinforcement on the vehicle interior surface side, that is, the inner panel side. The outer panel is further deformed, and as a whole, it is greatly deformed to the vehicle interior side, so that it is possible to effectively absorb the shock, and the impact force is difficult to be transmitted from the pillar at the rear end of the vehicle body to the guide rail on the outer surface of the vehicle body side wall. .
[0021]
Claim 13 In this invention, the impact force at the time of rear collision is transmitted from the pillar side at the rear end of the vehicle body to the pillar at the rear edge of the door opening through the guide rail on the outer surface of the vehicle body side wall, and the intermediate portion in the height direction of the pillar is folded forward. When bending, the rear end of the sliding door is guided outward by the inclined surface formed on the pillar at the rear edge of the door opening, preventing the sliding door from being caught by the door opening due to the deformation of the pillar. The sliding door does not become difficult to open.
[0022]
Claim 13 In the invention according to the present invention, the inclined surface is formed only at the intermediate portion in the height direction of the pillar at the rear edge of the door opening, that is, at the location where the pillar is bent forward, and has almost no influence on the appearance and the like. Absent.
[0023]
Claim 14 In the invention according to claim 1, as in the case of the invention according to claim 1, at the time of a rear collision, the pillar at the rear end of the low-rigidity body and the guide rail support part of the inner panel are deformed to absorb and reduce the impact force. The force can be sufficiently resisted by the pillar at the rear edge of the door opening portion having a high rigidity, and the pillar does not bend and the sliding door is not easily opened.
[0024]
Claim 15 In the invention according to the present invention, a notch portion is formed in the guide rail support portion of the inner panel, and a hole is provided in the vicinity of the guide rail height of the rear pillar portion of the inner panel, so that the guide rail support portion of the inner panel and the rear of the vehicle body are formed. Since the rigidity of the end pillar is low, the impact force at the time of rear collision can be absorbed and reduced by both of them. Further, the pillar at the rear end of the vehicle body is reinforced by the first reinforcement on the vehicle interior surface side, that is, the inner panel side. It is more deformed on the side, and is largely deformed to the vehicle interior surface side as a whole, so that the impact absorption can be effectively exhibited and the impact force is hardly transmitted from the pillar at the rear end of the vehicle body to the guide rail on the outer surface of the vehicle body side wall. In addition, by providing a hole in the vicinity of the guide rail height of the first reinforcement as well, the rigidity against the impact force at the rear collision of the pillar at the rear end of the vehicle body is made as low as possible, and the impact absorbing effect is made as much as possible. It is designed to increase. On the other hand, the pillar at the rear edge of the door opening is provided with a second reinforcement that partitions the inside of the pillar in the vicinity of the intermediate connecting portion extension line of the inner panel, and extends from the lower portion of the front pillar portion of the inner panel to the lower connecting portion. By providing a third reinforcement that is joined to the inner panel, the rigidity of the pillar is increased, so that the pillar slides even if impact force is transmitted to the pillar through the guide rail on the outer surface of the vehicle body side wall. The door is not bent and deformed so as to be sandwiched between the door openings. Even if the pillar is bent and deformed, the rear end of the sliding door is guided outward by the inclined surface formed on the pillar, preventing the sliding door from being caught in the door opening due to the deformation of the pillar. The sliding door does not become difficult to open.
[0025]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0026]
FIG. 1 shows a vehicle body side surface of a wagon vehicle having a rear structure according to an embodiment of the present invention. Reference numeral 1 denotes a vehicle body side wall, and an A pillar (front pillar) 2, a B pillar 3, A C pillar 4 and a D pillar (rear pillar) 5 are provided. A door opening 6 is formed between the B pillar 3 and the C pillar 4 on the side wall 1 of the vehicle body. A slide door 7 (see FIG. 10) that opens and closes the door opening 6 includes an upper edge of the door opening 6 and Guide rails (not shown) provided along the lower edges, and from the C pillar 4 at the rear edge of the door opening 6 of the vehicle body side wall 1 outer surface (rear fender 11 described later) to the vicinity of the D pillar 5 at the rear end of the vehicle body It is provided so as to be slidable in the front-rear direction along the extended guide rail 8.
[0027]
The vehicle body side wall 1 behind the door opening 6 includes a rear fender 11 as an outer panel that forms the outer surface thereof, and a quarter panel 12 (see FIG. 2) as an inner panel that forms the vehicle interior surface. A quarter window opening 13 is formed at the top of 1. As shown in FIG. 2, the quarter panel 12 includes a front pillar portion 12a constituting the C pillar 4, a rear pillar portion 12b constituting the D pillar 5, and upper ends of the pillar portions 12a and 12b. An upper connecting part 12c that connects and constitutes the upper edge of the quarter window opening 13, and an intermediate connecting part 12d that connects the intermediate parts of both pillar parts 12a and 12b and constitutes the lower edge of the quarter window opening 13; And a lower connecting portion 12e that connects lower end portions of both pillar portions 12a and 12b. Here, the reason why the intermediate connecting portion 12d and the lower connecting portion 12e are not provided continuously and the opening 14 is formed therebetween is to reduce the weight of the quarter panel 12 and the vehicle body. Further, in the quarter panel 12, in order to increase the rigidity of the guide rail 8 provided on the rear fender 11, it extends from the portion between the intermediate connecting portion 12d and the lower connecting portion 12e of the rear pillar portion 12b to the rear fender 11 side. A guide rail support portion 12f for supporting the rear end fixing portion of the guide rail 8 of the rear fender 11 is formed, and the front end portion of the guide rail support portion 12f connects the guide rail 8 to the rear fender 11 as shown in FIG. It is fastened together with the rear fender 11 by bolts and nuts 15 that are fixed to the rear fender 11.
[0028]
And, at the base end portion of the guide rail support portion 12f of the quarter panel 12, as a fragile portion for lowering the rigidity against the rear load acting at the rear collision of the guide rail support portion 12f than that of the guide rail 8, A cutout portion 21 with a cutout outer edge is formed, and the lower connection portion 12e of the quarter panel 12 absorbs the difference in actual length from the deformation on the vehicle body floor side at a position below the front end of the guide rail support portion 12f. For this purpose, a notch 22 is formed by cutting out the upper edge.
[0029]
As shown in FIGS. 3 and 4, the D pillar 5 has an outer surface constituted by a rear fender 11 and a vehicle interior surface constituted by a rear pillar portion 12b of the quarter panel 12, and a quarter quarter is formed inside the quarter pillar. A reinforcement 23 extending from the middle in the vertical direction of the window opening 13 to the lower end is disposed (see FIG. 2). The rear edge of the reinforcement 23 is sandwiched between joints between the rear fender 11 and the rear pillar portion 12b of the quarter panel 12. The On the other hand, the front edge of the reinforcement 23 is joined to the quarter panel 12. As shown in FIG. 2, the height of the guide rail 8 of the rear pillar portion 12b is set as a weak portion for lowering the rigidity against the rear load acting at the time of the rear portion collision. In the vicinity, two long holes 24, 24 that are vertically long are provided, and as shown in FIG. 4, vertically long holes 25 are provided near the height of the guide rail 8 of the reinforcement 23. .
[0030]
On the other hand, the C pillar 4 is composed of the rear fender 11 on the outer surface and the front pillar portion 12a of the quarter panel 12 on the outer surface, similarly to the D pillar 5. The C pillar 4 has a front pillar portion 12a of the quarter panel 12 as shown in FIGS. 2 and 5 to 8 in order to make the rigidity against the rear load acting at the time of rear collision higher than that of the guide rail 8. A reinforcement 31 is provided across the lower connecting portion 12e from the lower portion of the frame, and the reinforcement 31 is joined to the quarter panel 12. Further, a striker reinforcement 32 is provided at the intermediate portion in the height direction of the C pillar 4 (on the extension line of the intermediate connecting portion 12d of the quarter panel 12), and the striker reinforcement 32 is shown in FIGS. As described above, in the front-rear direction of the C pillar 4, a closed cross section that extends substantially along the rear fender 11 and extends in the vertical direction between the front pillar portion 12 a of the quarter panel 12 is formed, and the striker reinforcement 32. The front edge of the striker reinforcement 32 is sandwiched between the rear fender 11 and the front pillar portion 12a of the quarter panel 12, and the rear edge of the striker reinforcement 32 is joined to the front pillar portion 12a of the quarter panel 12. Has been.
[0031]
Further, in the middle part of the C pillar 4 in the height direction, the reinforcement for making the rigidity against the rear load acting at the time of the rear collision of the C pillar 4 higher than that of the guide rail 8 is the same as the reinforcement 31. As above, the upper partition for partitioning the inside of the C pillar 4 (specifically, in the closed cross section between the striker reinforcement 32 and the front pillar 12a of the quarter panel 12) at the middle and lower end in the vertical direction of the striker reinforcement 32 A member 33 and a lower partition member 34 are provided. As shown in an enlarged detail in FIG. 12, the upper partition member 33 has a horizontal portion 33a and a joint flange portion formed by bending the vehicle outer edge of the horizontal portion 33a downward and joined to the striker reinforcement 32. 33b, and a vertical flange portion 33c formed by bending the inner edge of the horizontal portion 33a upward at a substantially right angle. Further, as shown in enlarged detail in FIG. 13, the lower partition member 34 is formed by bending the horizontal portion 34 a and the outer edge of the horizontal portion 34 a upward and joining the striker reinforcement 32. It consists of a joining flange portion 34b and a vertical flange portion 34c formed by bending the inner edge of the horizontal portion 34a downward substantially at a right angle.
[0032]
As shown in FIGS. 9 and 10, a striker 35 of a locking device for locking the slide door 7 is attached to the overlapping portion of the striker reinforcement 32 and the rear fender 11 below the upper partition member 34. . When the slide door 7 is closed, the outer surface of the slide door 7 and the rear fender 11 are provided so as to be substantially flush with each other, and when the slide door 7 is closed, the rear end of the slide door 7 (the door inner panel and the door). The rear fender 11 corresponding to the outer panel trimming portion 7a is provided with an inclined surface 36 that is inclined rearward of the vehicle body toward the outer side of the vehicle width, and the inclined surface 36 is disposed at the striker reinforcement 32. That is, it is provided only in the intermediate portion in the height direction of the C pillar 4.
[0033]
Therefore, in the above embodiment, the notch portion 21 is formed in the guide rail support portion 12f of the quarter panel 12, and the elongated hole 24 is provided in the vicinity of the guide rail height of the rear pillar portion 12b of the quarter panel 12, Since the rigidity of the guide rail support portion 12f and the D pillar 5 of the quarter panel 12 is low, the D pillar 5 and the guide rail support portion 12f can be deformed at the time of a rear collision to reduce the impact force. Further, since the D-pillar 5 is reinforced by the reinforcement 23 on the vehicle interior side, that is, the quarter panel 12 side, the D-pillar 5 is reinforced as shown by an imaginary line in FIG. It is more deformed on the rear fender 11 side that is not, and largely deformed toward the interior side of the vehicle as a whole, so that it is possible to effectively absorb the shock and the impact force is difficult to be transmitted from the D pillar 5 to the guide rail 8 of the rear fender 11. Become. In addition, since the elongated hole 25 is provided in the vicinity of the guide rail height of the reinforcement 23, the rigidity against the impact force at the time of the rear collision of the D pillar 5 can be reduced as much as possible, and the impact absorbing effect is made possible. Can be enhanced.
[0034]
On the other hand, the C pillar 4 at the rear edge of the door opening 6 separates the closed cross section between the striker reinforcement 32 and the front pillar 12a of the quarter panel 12 separately from the conventionally known striker reinforcement 32. By providing two upper and lower partition members 33 and 34, and by providing a reinforcement 31 that is joined to the quarter panel 12 across the lower connecting portion 12e from the lower part of the front pillar portion 12a of the quarter panel 12, the C pillar 4 As described above, the impact force at the time of the rear collision is effectively absorbed and reduced as described above, and the impact force is transmitted to the C pillar 4 via the guide rail 8 of the rear fender 11. However, the C pillar 4 is not bent and deformed so that the slide door 7 is sandwiched between the door openings 6. Even if the C pillar 4 is bent and deformed, the rear end 7a of the slide door 7 is guided outwardly by the inclined surface 36 formed on the C pillar 4, so that the slide door 7 is deformed from the C pillar 4. As a result, it is possible to reliably prevent the sliding door 7 from being pinched by the door opening 6, and it is possible to ensure the safety of occupant evacuation in a rear collision.
[0035]
In addition, the inclined surface 36 is formed only in the middle part of the C pillar 4 in the height direction, that is, the part where the pillar 4 receives the impact force at the time of rear collision via the guide rail 8 and bends forward. Therefore, the appearance is not adversely affected.
[0036]
In addition, this invention is not limited to the said Example, Other various modifications are included. For example, in the above embodiment, in order to make the rigidity of the guide rail support part 12f of the quarter panel 12 lower than the rigidity of the guide rail 8 and the C pillar 4, the outer edge of the guide rail support part 12f has its outer edge. As shown in FIG. 14, for example, a bead portion 41 extending in the vertical direction may be formed in the guide rail support portion 12f as a fragile portion instead of the notch portion 21. . In this case, at the time of a rear collision, the guide rail support portion 12f and the rear pillar portion 12b of the quarter panel 13 are bent and deformed toward the vehicle interior side by the bead portion 41 to absorb the impact force as indicated by the phantom line.
[0037]
In the modification shown in FIGS. 15 and 16, the guide rail support portion 12f is connected to the rear fender 11 via the separation means 42, and acts by the separation means 42 at the time of a rear collision of the guide rail support portion 12f. The rigidity with respect to the rear load is made lower than that of the guide rail 8 and the C pillar 4. The separating means 42 includes a bolt hole 43 formed at the tip of the guide rail support portion 12 f, a guide rail support portion 12 f formed continuously with the bolt hole 43, and a width dimension larger than the diameter of the bolt hole 43. It comprises a slit 44 and a bolt and nut 45 that fasten the guide rail support portion 12f and the rear fender 11 through the bolt hole 43 with a predetermined fastening force. At the time of a rear collision, the fastening position of the bolt and nut 45 is shifted from the bolt hole 43 side to the slit 44 side, and the entire D pillar 5 is deformed to the vehicle interior side as indicated by the phantom line to absorb the impact force.
[0038]
Further, in the above embodiment, the notch portion 21 and the long hole 24 which are weak portions are formed in the guide rail support portion 12f and the D pillar 5 of the quarter panel 12, respectively. The weak part may be formed only on one of the support part 12f and the D pillar 5.
[0039]
【The invention's effect】
As described above, claims 1 to 12 , 14 According to the invention according to the present invention, at the time of a rear collision, the pillar at the rear end of the low-rigidity body and the guide rail support portion of the inner panel can be deformed to absorb and reduce the impact force. Because the pillar at the rear edge of the door opening with high rigidity can be sufficiently resisted, it is possible to prevent the pillar from being bent and difficult to open the slide door, and to improve safety. Can do.
[0040]
In particular, the claims 9 In the invention according to the present invention, since the pillar at the rear end of the vehicle body is reinforced by reinforcement at the inner panel side, the pillar is further deformed on the outer side of the vehicle body side wall that is not reinforced when subjected to the impact force of the rear collision. As a result, it will be able to effectively absorb the shock and make it difficult for the impact force to be transmitted from the pillar at the rear end of the vehicle body to the guide rail on the outer surface of the vehicle body side wall. It is possible to more reliably prevent the sliding door from becoming difficult to open due to the deformation of the pillar at the rear edge of the door opening at the time of a rear collision.
[0041]
Claim 13 According to the invention according to the present invention, when the pillar at the rear edge of the door opening portion is bent forward at the intermediate portion in the height direction due to the impact force at the time of the rear collision, the rear end of the slide door is formed by the inclined surface formed on the pillar. Since the sliding door is guided outside the vehicle width, it is possible to prevent the sliding door from being sandwiched by the door opening due to the deformation of the pillar and difficult to open, and to improve safety. .
[0042]
Claim 13 In the invention according to the present invention, the inclined portion is formed only at the intermediate portion in the height direction of the rear edge of the door opening, that is, the portion where the pillar bends forward. It also has.
[0043]
Claim 15 According to the present invention, the impact force at the time of the rear collision can be effectively absorbed and reduced by the deformation at the pillar at the rear end of the vehicle body and the guide rail support portion of the inner panel. The pillars at the rear edge of the door opening reinforced effectively with the force can sufficiently resist the pillars, so that the pillars can be prevented from being bent and the pillars are bent and deformed. However, since the rear end of the slide door is guided to the outside of the vehicle width by the inclined surface formed on the pillar, the slide door is sandwiched by the door opening due to the deformation of the pillar, and the slide door is difficult to open. It can be surely prevented and safety can be improved.
[Brief description of the drawings]
FIG. 1 is a view showing a vehicle body side surface of a wagon vehicle having a rear structure according to an embodiment of the present invention.
FIG. 2 is a view of a quarter panel as viewed from the side attached to a rear fender.
FIG. 3 is an enlarged cross-sectional view taken along line AA in FIG.
4 is an enlarged cross-sectional view taken along line BB in FIG.
FIG. 5 is a front view of a reinforcement.
6 is an enlarged cross-sectional view taken along line CC of FIG. 5 in a state in which the reinforcement is assembled.
7 is an enlarged sectional view taken along the line DD of FIG.
8 is an enlarged cross-sectional view along the line EE in FIG.
FIG. 9 is a perspective view of a striker reinforcement.
10 is an enlarged cross-sectional view taken along line FF in FIG. 1. FIG.
11 is an enlarged cross-sectional view taken along line GG in FIG.
FIG. 12 is a perspective view of an upper partition member.
FIG. 13 is a perspective view of a lower partition member.
FIG. 14 is a view corresponding to FIG. 3 showing a modification.
FIG. 15 is a view corresponding to FIG. 3, showing another modification.
FIG. 16 is an enlarged view of the distal end portion of the guide rail support portion in the same modification.
[Explanation of symbols]
1 Body side wall
4 C pillar (pillar on the rear edge of the door opening)
5 D pillar (pillar at the rear end of the car)
6 Door opening
7 Sliding door
8 Guide rail
11 Rear fender (outer panel)
12 Quarter panel (inner panel)
12a Front pillar
12b Rear pillar
12c Upper connection part
12d intermediate connection
12e Lower connection part
12f Guide rail support
13 Quarter window opening
21 Notch (fragile part)
23 Reinforcement
24,25 Long hole (fragile part)
31 Reinforcement
33, 34 Partition member (Reinforcement)
36 Inclined surface
41 Bead part (fragile part)
42 Separation means
43 Bolt hole
44 slits
45 Bolts and nuts

Claims

A door opening (6) is formed in the vehicle body side wall (1), and a slide door (7) that opens and closes the door opening (6) is located behind the door opening (6) rear edge of the vehicle body side wall (11) from the rear edge of the vehicle body. It is provided so as to be slidable in the front-rear direction along the guide rail (8) extending to the end,
The inner panel (12) that forms the inner surface of the vehicle body side wall behind the door opening (6) includes a front pillar portion (12a) that constitutes a pillar located at the rear edge of the door opening (6), and a rear end of the vehicle body. A rear pillar portion (12b) constituting the pillar, and an upper connecting portion (12c) for connecting upper ends of the pillar portions (12a, 12b) to each other and constituting an upper edge of the quarter window opening portion (13). The intermediate connection part (12d) which connects the intermediate parts of both pillar parts (12a, 12b) and constitutes the lower edge of the quarter window opening part (13), and the lower end parts of both pillar parts (12a, 12b) Extending from the portion between the lower connecting portion (12e) for connecting the rear connecting portion and the intermediate connecting portion (12d) and the lower connecting portion (12e) of the rear pillar portion (12b) to the vehicle body side wall outer surface (11) side. Guy on the outer surface (11) of the vehicle body side wall In the rear structure of the vehicle body with the rails (8) the guide rail support portion for supporting the rear end fixing portion and (12f),
A weak portion is formed in the guide rail support portion (12f) of the inner panel (12), and the weakness portion has a rigidity against a rear load acting at the time of a rear collision of the guide rail support portion (12f). The rear structure of the vehicle body characterized by being lower than that of (12a) .

The fragile portion, the vehicle body rear structure of claim 1, wherein a guide rail support portions cut edge lack notched portion (12f) (21).

The fragile portion, the vehicle body rear structure of claim 1 wherein the bead portion (41) extending in the vertical direction of the guide rail support portion (12f).

A door opening (6) is formed in the vehicle body side wall (1), and a slide door (7) that opens and closes the door opening (6) is located behind the door opening (6) rear edge of the vehicle body side wall (11) from the rear edge of the vehicle body. It is slidable in the front-rear direction along the guide rail (8) extending to the end,
The inner panel (12) that forms the inner surface of the vehicle body side wall behind the door opening (6) includes a front pillar portion (12a) that constitutes a pillar located at the rear edge of the door opening (6), and a rear end of the vehicle body. A rear pillar portion (12b) constituting the pillar, and an upper connecting portion (12c) for connecting upper ends of the pillar portions (12a, 12b) to each other and constituting an upper edge of the quarter window opening portion (13). The intermediate connection part (12d) which connects the intermediate parts of both pillar parts (12a, 12b) and constitutes the lower edge of the quarter window opening part (13), and the lower end parts of both pillar parts (12a, 12b) Extending from the portion between the lower connecting portion (12e) for connecting the rear connecting portion and the intermediate connecting portion (12d) and the lower connecting portion (12e) of the rear pillar portion (12b) to the vehicle body side wall outer surface (11) side. Guy on the outer surface (11) of the vehicle body side wall In the rear structure of the vehicle body with the rails (8) the guide rail support portion for supporting the rear end fixing portion and (12f),
At least one of the pillar (12b) at the rear end of the vehicle body and the guide rail support portion (12f) of the inner panel (12) is more resistant to a rear load acting at the time of a rear collision than the pillar (12a) at the rear edge of the door opening. The rigidity is set low,
The guide rail support portion (12f) of the inner panel (12) is connected to the outer side surface (11) of the vehicle body via a separating means (42), and the guide rail support portion (12f) is connected by the separating means (42). A rear structure of a vehicle body characterized in that rigidity against a rear load acting at the time of a rear collision is lower than that of a pillar (12a) at a rear edge of a door opening.

The separation means (42) is formed in the guide rail support portion (12f) continuously with the bolt hole (43) formed in the tip end portion of the guide rail support portion (12f) and the bolt hole (43). A slit (44) having a width dimension larger than the diameter of the bolt hole (43), a bolt for fastening the guide rail support portion (12f) and the vehicle body side wall outer surface (11) with a predetermined fastening force through the bolt hole (43); The rear part structure of a vehicle body according to claim 4, comprising a nut.

A door opening (6) is formed in the vehicle body side wall (1), and a slide door (7) that opens and closes the door opening (6) is located behind the door opening (6) rear edge of the vehicle body side wall (11) from the rear edge of the vehicle body. It is slidable in the front-rear direction along the guide rail (8) extending to the end,
The inner panel (12) that forms the inner surface of the vehicle body side wall behind the door opening (6) includes a front pillar portion (12a) that constitutes a pillar located at the rear edge of the door opening (6), and a rear end of the vehicle body. A rear pillar portion (12b) constituting the pillar, and an upper connecting portion (12c) for connecting upper ends of the pillar portions (12a, 12b) to each other and constituting an upper edge of the quarter window opening portion (13). The intermediate connection part (12d) which connects the intermediate parts of both pillar parts (12a, 12b) and constitutes the lower edge of the quarter window opening part (13), and the lower end parts of both pillar parts (12a, 12b) Extending from the portion between the lower connecting portion (12e) for connecting the rear connecting portion and the intermediate connecting portion (12d) and the lower connecting portion (12e) of the rear pillar portion (12b) to the vehicle body side wall outer surface (11) side. Guy on the outer surface (11) of the vehicle body side wall In the rear structure of the vehicle body with the rails (8) the guide rail support portion for supporting the rear end fixing portion and (12f),
A weak portion is formed in the pillar (12b) at the rear end of the vehicle body, the weak portion is provided behind the guide rail support member (12f), and a rear collision of the pillar (12b) at the rear end of the vehicle body by the weak portion. A rear structure of a vehicle body, characterized in that rigidity against a rear load acting at times is lower than that of a pillar (12a) at a rear edge of a door opening.

The rear structure of the vehicle body according to claim 6 , wherein the weakened portion is a hole (24, 24) provided in the vicinity of the height of the guide rail (8) of the rear pillar portion (12b) of the inner panel (12).

The rear structure of the vehicle body according to claim 6 , wherein the weakened portion is a hole (25) provided in the vicinity of the height of the guide rail (8) of the reinforcement (23) provided in the pillar (12b) at the rear end of the vehicle body. .

The rear edge of the reinforcement (23) is sandwiched and joined by a joint portion between the rear pillar portion (12b) of the inner panel (12) and the outer panel (11) constituting the pillar at the rear end of the vehicle body. The rear structure of the vehicle body according to claim 8 , wherein the front edge of the reinforcement (23) is joined to the rear pillar portion (12b).

The pillar (12a) at the rear edge of the door opening is provided with a reinforcement, and the rigidity against the rear load acting at the rear collision of the pillar (12b) at the rear end of the vehicle body is reinforced by the reinforcement. The rear structure of the vehicle body according to claim 6 , wherein the rear structure is lower than that of the pillar (12a) at the rear edge of the door opening.

The reinforcement (32) is provided so as to partition the inside of the pillar (12a) in the vicinity of an intermediate connecting portion (12d) extension line of the inner panel (12) in the pillar (12a) at the rear edge of the door opening. Item 10. The rear structure of the vehicle body according to Item 10 .

The reinforcement (31) extends from the lower portion of the front pillar portion (12a) of the inner panel (12) constituting the pillar at the rear edge of the door opening portion to the inner panel (12) across the lower connecting portion (12e). The rear part structure of the vehicle body according to claim 10 joined.

A door opening (6) is formed in the vehicle body side wall (1), and a slide door (7) that opens and closes the door opening (6) is located behind the door opening (6) rear edge of the vehicle body side wall (11) from the rear edge of the vehicle body. It is provided so as to be slidable in the front-rear direction along the guide rail (8) extending to the end,
The inner panel (12) that forms the inner surface of the vehicle body side wall behind the door opening (6) includes a front pillar portion (12a) that constitutes a pillar located at the rear edge of the door opening (6), and a rear end of the vehicle body. A rear pillar portion (12b) constituting the pillar, and an upper connecting portion (12c) for connecting upper ends of the pillar portions (12a, 12b) to each other and constituting an upper edge of the quarter window opening portion (13). The intermediate connection part (12d) which connects the intermediate parts of both pillar parts (12a, 12b) and constitutes the lower edge of the quarter window opening part (13), and the lower end parts of both pillar parts (12a, 12b) Extending from the portion between the lower connecting portion (12e) for connecting the rear connecting portion and the intermediate connecting portion (12d) and the lower connecting portion (12e) of the rear pillar portion (12b) to the vehicle body side wall outer surface (11) side. Guy on the outer surface (11) of the vehicle body side wall In the rear structure of the vehicle body with the rails (8) the guide rail support portion for supporting the rear end fixing portion and (12f),
A striker reinforcement (32) is provided in the middle in the height direction of the pillar (12a) at the rear edge of the door opening,
The pillar (12a) at the rear edge of the door opening has an inclined surface that inclines toward the rear of the vehicle body toward the outer side of the vehicle width at a portion facing the rear end of the slide door (7) when the slide door (7) is closed. (36) is formed ,
The rear structure of the vehicle body, wherein the inclined surface (36) is provided only at a place where the striker reinforcement (32) is disposed .

A door opening (6) is formed in the vehicle body side wall (1), and a slide door (7) that opens and closes the door opening (6) is located behind the door opening (6) rear edge of the vehicle body side wall (11) from the rear edge of the vehicle body. It is provided so as to be slidable in the front-rear direction along the guide rail (8) extending to the end,
The inner panel (12) that forms the inner surface of the vehicle body side wall behind the door opening (6) includes a front pillar portion (12a) that constitutes a pillar located at the rear edge of the door opening (6), and a rear end of the vehicle body. A rear pillar portion (12b) constituting the pillar, and an upper connecting portion (12c) for connecting upper ends of the pillar portions (12a, 12b) to each other and constituting an upper edge of the quarter window opening portion (13). The intermediate connection part (12d) which connects the intermediate parts of both pillar parts (12a, 12b) and constitutes the lower edge of the quarter window opening part (13), and the lower end parts of both pillar parts (12a, 12b) Extending from the portion between the lower connecting portion (12e) for connecting the rear connecting portion and the intermediate connecting portion (12d) and the lower connecting portion (12e) of the rear pillar portion (12b) to the vehicle body side wall outer surface (11) side. Guy on the outer surface (11) of the vehicle body side wall In the rear structure of the vehicle body with the rails (8) the guide rail support portion for supporting the rear end fixing portion and (12f),
At least one of the pillar (12b) at the rear end of the vehicle body and the guide rail support portion (12f) of the inner panel (12) is set to be lower in rigidity with respect to a rear load acting at the time of a rear collision than the guide rail (8). And
The rear structure of the vehicle body is characterized in that the pillar (12a) at the rear edge of the door opening is set to be higher in rigidity against a rear load acting at the time of a rear collision than the guide rail (8).

A door opening (6) is formed in the vehicle body side wall (1), and a slide door (7) that opens and closes the door opening (6) is located behind the door opening (6) rear edge of the vehicle body side wall (11) from the rear edge of the vehicle body. It is provided so as to be slidable in the front-rear direction along the guide rail (8) extending to the end,
The inner panel (12) that forms the inner surface of the vehicle body side wall behind the door opening (6) includes a front pillar portion (12a) that constitutes a pillar located at the rear edge of the door opening (6), and a rear end of the vehicle body. A rear pillar portion (12b) constituting the pillar, and an upper connecting portion (12c) for connecting upper ends of the pillar portions (12a, 12b) to each other and constituting an upper edge of the quarter window opening portion (13). The intermediate connection part (12d) which connects the intermediate parts of both pillar parts (12a, 12b) and constitutes the lower edge of the quarter window opening part (13), and the lower end parts of both pillar parts (12a, 12b) Extending from the portion between the lower connecting portion (12e) for connecting the rear connecting portion and the intermediate connecting portion (12d) and the lower connecting portion (12e) of the rear pillar portion (12b) to the vehicle body side wall outer surface (11) side. Guy on the outer surface (11) of the vehicle body side wall In the rear structure of the vehicle body with the rails (8) the guide rail support portion for supporting the rear end fixing portion and (12f),
The guide rail support portion (12f) is formed with a notch (21) whose outer edge is notched, and the guide rail (8) height of the rear pillar portion (12b) of the inner panel (12). There are holes (24, 24) in the vicinity,
The pillar (12b) at the rear end of the vehicle body is provided with a first reinforcement (23), and the rear edge of the reinforcement (23) is the inner panel (12) constituting the pillar at the rear end of the vehicle body. While the rear pillar portion (12b) and the outer panel (11) are joined by being sandwiched between them, the front edge of the reinforcement (23) is joined to the rear pillar portion (12b). In the vicinity of the height of the guide rail (8) of the reinforcement (23), a hole (25) is provided.
The pillar (12a) at the rear edge of the door opening is provided with a second reinforcement (32) for partitioning the pillar (12a) in the vicinity of the intermediate connecting portion (12d) extension line of the inner panel (12). And a third reinforcement (31) joined to the inner panel (12) across the lower connecting portion (12e) from the lower part of the front pillar portion (12a) of the inner panel (12). And
Further, the pillar (12a) at the rear edge of the door opening is inclined so as to incline toward the rear of the vehicle body toward the outer side of the vehicle width at a portion facing the rear end of the slide door (7) when the slide door (7) is closed. A rear structure of the vehicle body, characterized in that a surface (36) is formed.