JP3865613B2

JP3865613B2 - Automotive bumper reinforcement structure

Info

Publication number: JP3865613B2
Application number: JP2001316442A
Authority: JP
Inventors: 隆二松島; 和真近藤
Original assignee: Mazda Motor Corp
Current assignee: Mazda Motor Corp
Priority date: 2001-10-15
Filing date: 2001-10-15
Publication date: 2007-01-10
Anticipated expiration: 2021-10-15
Also published as: JP2003118517A

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車のバンパ本体の裏側に補強部材を設けたバンパの補強構造に関する。
【０００２】
【従来の技術】
従来より、この種のバンパ補強構造として、例えば、実開平２−１０２８５１号公報に開示されるように、バンパ本体の裏側で上下方向に延びるバンパ補強部材を設け、該バンパ本体及びバンパ補強部材のそれぞれの上端を重ねて車体パネルに固定し、該バンパ補強部材の下端をバンパ本体の上下方向中間部に固定するようにしたものが知られている。
【０００３】
すなわち、一般に、自動車の外観意匠を変えてユーザの様々な嗜好に対応する場合に、フロントないしリヤのバンパの意匠を変更することが行われており、この際、バンパ本体を作り替えると型費等の製造コストが高くなるため、バンパ本体は共通化し、その表側に真空成形により得られるパネル状のバンパカバーを取り付けるようにしている。しかしながら、こうするとバンパカバーの重量によってバンパ本体が歪んで、例えばボンネットフード等とバンパとの隙間が大きくなって、見栄えが悪くなることがあるから、このことを防ぐために前記従来例の如くバンパ補強部材を設けるのである。
【０００４】
【発明が解決しようとする課題】
ところが、バンパ補強部材の車体への取付部は、パンパ本体の車体パネルへの取付部と該車体パネルとに挟持されるため、バンパ本体の上端がバンパ補強部材の前記取付部の肉厚分だけ上方向にずれることになる。このため、バンパ本体の組付作業が困難となったり、また、ボンネットフードとバンパ本体上端部との隙間が小さくなり、ボンネットフードを車体にロックできなくなったりする。
【０００５】
本発明は、斯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、バンパ本体にバンパカバーを取り付けて外観意匠を変更するものにおいて、バンパ本体の重量増に対応して補強部材を設ける場合に、バンパ本体の車体への固定構造に工夫を凝らして、バンパ本体の組付作業性の悪化をなくし、バンパ本体の他の自動車部品との干渉をなくすことにある。
【０００６】
【課題を解決するための手段】
前記目的を達成するために、本発明の第１の解決手段では、バンパカバーの装着に対応してバンパ補強部材を設ける場合に、バンパ本体を車体に支持する支持ブラケットを設け、バンパ本体の取付面が車体におけるバンパ補強部材の取付面と略同一の水平面上に位置するようにした。
【０００７】
具体的には、請求項１の発明では、自動車のバンパ本体の裏側で上下方向に延びて、該バンパ本体に結合されるバンパ補強部材を備え、このバンパ補強部材の上端に設けた取付部及びバンパ本体の上端に設けたバンパ取付部を車体にそれぞれ固定するようにした自動車のバンパ補強構造を前提とする。そして、前記バンパ本体のバンパ取付部を、車体前後方向に延びる支持ブラケットを介して車体に固定し、前記バンパ補強部材の上端取付部を前記支持ブラケットの車体への固定部と車体とで挟持させるとともに、該支持ブラケットには、前記バンパ本体のバンパ取付部が固定される取付面と車体における前記バンパ補強部材の上端取付部の取付面とが略同一の水平面上に位置するようにバンパ本体側が低い段差部を形成する構成とする。
【０００８】
前記の構成によれば、バンパ本体にバンパカバーを装着していない場合、バンパ本体のバンパ取付部は車体に直接、固定されており、このようなバンパ本体にバンパカバーを装着してバンパ本体を車体へ固定する場合、前記バンパ本体の前記バンパ取付部をその車体前後方向の長さが短くなるように一部切断して、該切断されて短くなったバンパ取付部を支持ブラケットを介して車体に固定する。この場合、バンパ本体の裏側で上下方向に延びるバンパ補強部材が該バンパ本体に結合されているので、バンパカバーの装着によるバンパ本体の歪みが防止される。また、前記バンパ補強部材の上端取付部は支持ブラケットと車体とに挟持され、該支持ブラケットには、バンパ本体の取付面が車体におけるバンパ補強部材の取付面と略同一の水平面上に位置するように段差部が形成されているので、バンパ本体の取付位置が、バンパカバーを装着しない場合と比較して上方へずれることはない。つまり、バンパ本体の成形を変更することなく、バンパカバーの装着により自動車の仕様を変更する場合に、バンパ本体の組付作業性の悪化をなくし、バンパ本体の他の自動車部品との干渉をなくすことができる。
【０００９】
請求項２の発明では、請求項１の発明において、前記バンパ補強部材の上端取付部の肉厚と前記支持ブラケットの車体側固定部の肉厚との和を、バンパ本体のバンパ取付部の肉厚と略同等ないしそれ以下に設定するものとする。
【００１０】
この構成によると、バンパ補強部材の上端取付部及び支持ブラケットの車体側固定部の肉厚の和が、バンパ取付部の肉厚と略同等ないしそれ以下とされているので、バンパカバーを装着する仕様におけるラジエタグリル等の取付位置がバンパカバーを装着しない仕様よりも上方へずれることはなく、ボンネットフードとの干渉を防止できる。
【００１１】
尚、バンパ補強部材及び支持ブラケットの肉厚の和がバンパ取付部の肉厚よりも小さい場合には、ラジエタグリル等の取付部の取付高さが略同等となるように、例えばバンパ補強部材の上端取付部及び支持ブラケットの車体側取付部の間にワッシャ等を配設すればよい。
【００１２】
請求項３の発明では、請求項２の発明において、前記支持ブラケットの車体側固定部の上側に、ラジエタグリルの車体への取付部を重合するものである。これにより請求項３の発明は、請求項２の発明の構成をより具体化できる。
【００１３】
本発明の第２の解決手段では、バンパカバーの装着に対応してバンパ補強部材を設ける場合に、このバンパ補強部材にバンパ本体の固定部を一体形成するとともに、該固定部におけるバンパ本体の取付面が車体におけるバンパ補強部材の取付面と略同一の水平面上に位置するようにした。
【００１４】
具体的には、請求項４の発明では、自動車のバンパ本体の裏側で上下方向に延びて、該バンパ本体に結合されるバンパ補強部材を備え、このバンパ補強部材の上端に設けた取付部及びバンパ本体の上端に設けたバンパ取付部を車体にそれぞれ固定するようにした自動車のバンパ補強構造を前提とする。そして、前記バンパ補強部材の上端取付部近傍には、バンパ本体側へ向かって略水平に突出するバンパ固定部を一体に形成し、該バンパ固定部の上側に前記バンパ取付部を固定し、前記バンパ固定部を、該バンパ固定部におけるバンパ取付部の取付面が車体における前記バンパ補強部材の上端取付部の取付面と略同一の水平面上に位置するように設ける構成とする。
【００１５】
この構成によれば、請求項１の発明と同様に、バンパ本体にバンパカバーを装着していない場合、バンパ本体のバンパ取付部は車体に直接固定されており、このようなバンパ本体にバンパカバーを装着してバンパ本体を車体へ固定する場合、前記バンパ本体の前記バンパ取付部をその車体前後方向の長さが短くなるように一部切断して、該切断されて短くなったバンパ取付部を、前記バンパ本体の裏側で車体に結合されるバンパ補強部材のバンパ固定部を介して車体に固定する。該バンパ固定部は、バンパ取付部の取付面が車体におけるバンパ補強部材の取付面と略同一の水平面上に位置するように設けられているので、請求項１の発明と同様に、バンパカバーの装着により自動車の仕様を変更する場合に、バンパ本体の組付作業性の悪化をなくし、バンパ本体の他の自動車部品との干渉をなくすことができる。
【００１６】
また、バンパ固定部は、バンパ補強部材に一体形成されているため、部品点数及び組付工数を削減することができる。
【００１７】
請求項５の発明では、請求項４の発明において、前記バンパ補強部材の上端取付部の肉厚を、バンパ本体のバンパ取付部の肉厚と略同等ないしそれ以下に設定するものとする。
【００１８】
この構成によれば、バンパ補強部材の上端取付部の肉厚がバンパ本体の肉厚と略同等ないしそれ以下とされているので、請求項２の発明と同様の作用効果が得られる。
【００１９】
請求項６の発明では、請求項５の発明において、前記バンパ補強部材の上端取付部の上側に、ラジエタグリルの車体への取付部を重合するものである。これにより、請求項６の発明は、請求項５の発明の構成を具体化できる。
【００２０】
【発明の実施の形態】
以下、本発明の実施形態を図面に基づいて説明する。
【００２１】
（実施形態１）
図１は、本発明の自動車のバンパ補強構造をフロントバンパ１に適用した実施形態を示す。このフロントバンパ１は、ボンネットフード２及び左右のフロントフェンダ３と略連続する形状とされたフロントバンパ本体４を備えていて、自動車の仕様に応じて該フロントバンパ本体４の前面にバンパカバーとしてのフロントエアダム６の装着が可能となっている。
【００２２】
すなわち、フロントエアダム６を装着する仕様では、同図に示すように、フロントバンパ本体４の下側の部分がフロントエアダム６によって覆われ、該フロントエアダム６の意匠がフロントバンパ１下側の意匠となる。さらに、この仕様では、フロントエアダム６の装着による重量の増加に対応して、フロントバンパ本体４の裏側の左右両側にそれぞれプレート状のバンパ補強部材５（図１では車体右側のもののみ示す）が配設される。一方、フロントエアダム６を装着しない仕様では、フロントバンパ本体４の意匠がフロントバンパ１の意匠となり、前記バンパ補強部材５は省略される。つまり、この自動車における前部の意匠の変更は、フロントエアダム６の装着によって行うことができる。
【００２３】
前記フロントバンパ本体４は、樹脂材料を射出成形したものであり、その車幅方向中央部の上側には、ラジエタグリル７が配設される中央切欠部８が形成されるとともに、その左右両側にそれぞれヘッドランプ９が配設される左右一対のヘッドランプ配設部１０が形成されている。前記ラジエタグリル７は、車体前方から見て、中央切欠部８の略全体に亘るように形成されており、その車幅方向両端には略水平に延びる後述の取付部７ａが一体形成され、さらに、その取付部７ａには車体への取付用の貫通孔が形成されている。
【００２４】
前記フロントバンパ本体４の中央切欠部８と各ヘッドランプ配設部１０との間の中間部分には、バンパ前壁部の上縁から突出して上方かつ車体後方へ向かうように緩く湾曲して延びるバンパ上壁部１１が形成され、その上端には略水平な取付フランジ１２（バンパ取付部）が設けられていて、図３に示すように、この取付フランジ１２がシュラウドアッパパネル等の車体パネル１３に取り付けられるようになっている。該車体パネル１３は、取付フランジ１２が固定される水平壁部１３ａと、この水平壁部１３ａの車体後端から略鉛直に上方へ延びる鉛直壁部１３ｂとからなる断面略Ｌ字状に形成されている。
【００２５】
前記フロントエアダム６を装着しない仕様では、図２に示すように、取付フランジ１２が車体パネル１３の水平壁部１３ａに直接、固定されている。すなわち、取付フランジ１２は、肉厚が略２．５ミリメートルとされていて、図３における取付フランジ１２よりも車体前後方向に長く形成され、取付フランジ１２の車体後方側に第１取付孔１５が開孔されている。前記車体パネル１３の水平壁部１３ａには、前記取付フランジ１２の第１取付孔１５に対応する貫通孔１３ｃが形成されていて、その下側にナット２２が溶接されている。そして、前記取付フランジ１２を車体パネル１３の水平壁部１３ａの上側に重ね、さらにその上側に前記ラジエタグリル７の取付部７ａを重ねた後、それらの上方からボルト２５を各孔部１５、１３ｃに挿入して前記ナット２２に螺合させることにより、フロントエアダム６を装着していないフロントバンパ本体４及びラジエタグリル７を共に車体パネル１３へ固定する。
【００２６】
次に、前記フロントエアダム６を装着する仕様について説明する。フロントエアダム６は樹脂材料を真空成形したパネル状のものであり、図１に示すように、フロントバンパ本体４の下端近傍から上方へ約２／３の部分を覆うように形成されている。尚、前記フロントエアダム６の車幅方向両端側には、一対のフォグランプ格納口２７が、前記フロントバンパ本体４のフォグランプ格納口に対応するように形成されている。さらに、このフォグランプ格納口２７の間には、前記フロントバンパ本体４のエア導入口に対応するようにエア導入口２８が形成されている。
【００２７】
前記フロントエアダム６の所定個所には、図３に示すように、フロントバンパ本体４への取付部材２９が互いに離間して複数設けられている。該各取付部材２９のエアダム側は、フロントエアダム６の裏面に固着される一方、フロントバンパ本体４側には、該フロントバンパ本体４の前壁部に挿入されるファスナ３０が設けられている。フロントエアダム６が取り付けられると、該フロントエアダム６のフォグランプ格納口２７が前記フロントバンパ本体４のフォグランプ格納口と一致するとともに、フロントエアダム６のエア導入口２８がフロントバンパ本体４のエア導入口と一致する。
【００２８】
前記バンパ補強部材５は、略１．２ミリメートル厚の鋼板をプレス成形してなり、左右のバンパ上壁部１１の裏側にそれぞれ配設されている。バンパ補強部材５は、その上端部が車体パネル１３に固定され、図３及び図４に示すように、全体としてその上端から下方へ向かってフロントエアダム６の上縁近傍に対応する位置まで延びた後、車体前方へ折れ曲がっていて、その端部には前記フロントバンパ本体４の補強部材固定部１８に固定される下側フランジ３３がフロントバンパ本体４の裏面に沿って下方へ延びている。前記フロントバンパ本体４の補強部材固定部１８には、車体前後方向に貫通する一対の取付孔１４が、車幅方向に並設されており、一方、各バンパ補強部材５の下側フランジ３３には、フロントバンパ本体４の補強部材固定部１８に車体後側から接合した状態で、前記取付孔１４と一致するように一対の孔部３４，３４が形成されている。そして、この下側フランジ３３の車体後側にはナット３５が溶接されており、該下側フランジ３３とフロントバンパ本体４の補強部材固定部１８とを固定するときは、フロントバンパ本体４の車体前方から各取付孔１４及び孔部３４にボルト３６を挿入してからナット３５に螺合させる。
【００２９】
一方、前記バンパ補強部材５の上端部には、略水平に延びる上端取付部としての上側フランジ３７が形成されていて、この上側フランジ３７は、その上側に配設される前記支持ブラケット２０のブラケット固定部２０ａと共に前記車体パネル１３の水平壁部１３ａに固定されている。バンパ補強部材５の上側フランジ３７及び下側フランジ３３の間の本体部３８の形状は、その上側の部分が上側フランジ３７の前端から下側ほど車体前方に位置するように若干、傾斜して下方へ延びている。そして、その傾斜部分よりも下側の部分は略鉛直に延びるように形成され、さらにその下端側は車体前方へ向かうように、比較的、緩く曲げられた後、略水平に延びて前記下側フランジ３３の上端と連続している。
【００３０】
前記本体部３８における下側の屈曲した部分及びその車体前側の水平部分は、図４に示すように、該本体部３８の上側の部分よりも車幅方向両側に幅広に形成されている。また、本体部３８の車幅方向中央部には、その裏側へ突出する断面Ｕ字状の溝部３９が、その本体部３８の上端から下端に亘って直線的に延びるように形成されている。さらに、この本体部３８の車幅方向両縁部は、それぞれ車体後方へ向かって略直角に折り曲げられており、前記した溝部３９とともに、バンパ補強部材５の剛性を向上させている。
【００３１】
次に、前記フロントバンパ本体４の車体への固定について説明すると、まず、図２のように成形されたフロントバンパ本体４の取付フランジ１２を車体前後方向の略中央部分で切断して、第１取付孔１５が形成された車体後方部分をフロントバンパ本体４から取り除き、その後、残りの部分である車体前方部分の取付フランジ１２に第２取付孔１６を開孔した後、該取付フランジ１２を略水平に延びる支持ブラケット２０のバンパ側取付部４３に固定する。すなわち、取付フランジ１２の第２取付孔１６は、車幅方向に２つ並設されており、これに対応して支持ブラケット２０のバンパ側取付部４３にも２つの貫通孔４３ａ，４３ａが形成され、該支持ブラケット２０の下側にはナット４０が溶接されている。そして、前記取付フランジ１２の下面を支持ブラケット２０のバンパ側取付部４３の上面に重ね合わせてから両者をボルト４１及びナット４０で締結する。
【００３２】
前記支持ブラケット２０の車体後方部分のブラケット固定部２０ａは、略水平に後方へ延びていて、このブラケット固定部２０ａには、前記車体パネル１３の水平壁部１３ａの貫通孔１３ｃに対応するように貫通孔２０ｂが形成されている。また、前記バンパ補強部材５の上側フランジ３７には、前記車体パネル１３の水平壁部１３ａの貫通孔１３ｃに対応するように貫通孔が形成されている。前記バンパ補強部材５の上側フランジ３７を前記支持ブラケット２０のブラケット固定部２０ａと車体パネル１３の水平壁部１３ａとの間に配置し、さらに、支持ブラケット２０のブラケット固定部２０ａの上側に前記ラジエタグリル７の取付部７ａを重ねて、ボルト２５及びナット２２により締結する。
【００３３】
前記支持ブラケット２０の車体前後方向の中間部には、段差部４５が設けられていて、該段差部４５は支持ブラケット２０のバンパ側取付部４３の上面と、前記車体パネル１３の水平壁部１３ａの上面とが略同一の水平面上に位置するように形成されている。すなわち、支持ブラケット２０のバンパ側取付部４３の上面とバンパ補強部材５の上側フランジ３７の下面とが略同じ高さとなるように、該バンパ側取付部４３が相対的に低く位置付けられているので、フロントバンパ本体４はバンパ補強部材５を設けたことによって上方へずれることはない。
【００３４】
また、前記支持ブラケット２０のバンパ側取付部４３の貫通孔４３ａは、図３で示したフロントバンパ本体４が図２で示したフロントバンパ本体４と車体前後方向において車体に対し同じ位置になるように開孔されており、このことと前記段差部４５を形成したこととによって、フロントエアダム６を装着した場合であっても、フロントエアダム６を装着しない場合とフロントバンパ本体４の取付位置、即ち、車体前後方向及び上下方向についての位置はそれぞれ略同一となる。
【００３５】
したがって、この実施形態１に係るフロントバンパ１によると、フロントエアダム６を装着しない仕様では、フロントバンパ本体４の取付フランジ１２の車体後方部分を直接、車体パネル１３に固定することができる。一方、フロントエアダム６を装着する仕様では、前記取付フランジ１２の車体後方部分を切り取ることで該取付フランジ１２の前部を支持ブラケット２０を介して車体パネル１３に固定でき、しかも、フロントバンパ本体４の裏側にバンパ補強部材５が配設されて該フロントバンパ本体４に結合されるので、該フロントバンパ本体４の重量増加による歪みを防止できる。
【００３６】
この際、前記支持ブラケット２０には、フロントバンパ本体４の取付フランジ１２が取り付けられるバンパ側取付部４３の上面（取付面）と前記車体パネル１３におけるバンパ補強部材５の上側フランジ３７が取り付けられる水平壁部１３ａの上面（取付面）とが略同じ高さとなるように段差部４５が形成され、かつ、支持ブラケット２０の車体前方部分に開孔された第２取付孔１６がフロントエアダム６を装着していないフロントバンパ本体４と車体前後方向の取付位置が変わらないように設定されているので、フロントエアダム６を装着したフロントバンパ本体４の取付位置は、前記フロントエアダム６を装着しない場合のものと略同じとすることができる。つまり、このフロントバンパ１によると、自動車の仕様変更によって、フロントバンパ本体４の組付作業性が悪化することを防止できるとともに、ボンネットフード２とフロントバンパ本体４との隙間が拡がってボンネットフード２の車体に対するロックができなくなったり、見栄えが損なわれたりすることはない。
【００３７】
また、バンパ補強部材５の上側フランジ３７及び支持ブラケット２０のブラケット固定部２０ａの肉厚の和と、フロントバンパ本体４の取付フランジ１２の肉厚とが略同等であるので、自動車の仕様によって、ラジエタグリル７の取付位置が上下方向にずれることはない。尚、バンパ補強部材５及び支持ブラケット２０の前記肉厚の和が相対的に小さい場合では、ラジエタグリル７の取付部７ａの取付高さが略同一となるように、例えば支持ブラケット２０とラジエタグリル７の取付部７ａとの重合部間にワッシャ等を配設するようにすればよい。
【００３８】
また、支持ブラケット２０は、バンパ補強部材５の上側フランジ３７の上面に溶接により一体的に設けるようにしてもよい。
【００３９】
（実施形態２）
図５は、本発明の実施形態２に係る自動車のフロントバンパ１を示す。この実施形態２のフロントバンパ１は、バンパ補強部材５の構造以外は前記実施形態１のものと同様に構成されているので、以下、同一の部分には同一の符号を付してその説明は省略する。
【００４０】
具体的には、前記実施形態１における支持ブラケット２０を省略して、フロントバンパ本体４の取付フランジ１２を、前記バンパ補強部材５の上側フランジ３７近傍に一体形成したバンパ固定部５０に固定するようにした。すなわち、このバンパ固定部５０は、図６に示すように、略矩形の板状とされ、その車体前方の縁部及び車幅方向両縁部がバンパ補強部材５の本体部３８から切り離される一方、車体後方の縁部が上側フランジ３７近傍と連続するようにバンパ補強部材５と一体に形成されており、フロントバンパ本体４側へ略水平に突出している。
【００４１】
前記バンパ固定部５０には、前記実施形態１の支持ブラケット２０の車体前方部分と同様に車幅方向に２つの貫通孔５０ａ，５０ａが並設され、図５に示すように、バンパ固定部５０の下側にナット５２が溶接されていて、その上面に前記取付フランジ１２の下面を重ねてボルト４１及びナット５２で締結する。一方、各バンパ補強部材５の上側フランジ３７（上端取付部）及び下側フランジ３３は、前記実施形態１と同様に車体パネル１３の水平壁部１３ａ及びフロントバンパ本体４の補強部材固定部１８に固定され、さらに、前記ラジエタグリル７の取付部７ａは前記バンパ補強部材５の上側フランジ３７に重ね合わされて共に固定されている。なお、上側フランジ３７に開孔された３７ａはボルト２５が挿通される貫通孔である。
【００４２】
前記バンパ固定部５０は、該バンパ固定部５０における上面、即ち、フロントバンパ本体４の取付フランジ１２が取り付けられる面（取付面）と、バンパ補強部材５の上側フランジ３７が取り付けられる車体パネル１３の水平壁部１３ａの上面（取付面）とが略同一の水平面上に位置するように設けられている。すなわち、バンパ補強部材５の上側フランジ３７とバンパ固定部５０との間には、該バンパ固定部５０側が低い段差部５３が設けられていて、該段差部５３はバンパ固定部５０の上面と上側フランジ３７の下面とが略同じ高さとなるように形成されている。つまり、この段差は上側フランジ３７の肉厚に相当する寸法である。このため、フロントバンパ本体４はバンパ補強部材５を設けたことによって上方へずれることはない。また、前記バンパ固定部５０の貫通孔５０ａの位置は、前記実施形態１と同様に、フロントエアダム６を装着していないフロントバンパ本体４と車体前後方向の取付位置が変わらないように設定されている。これらのことによって、フロントエアダム６を装着する仕様と装着しない仕様とでフロントバンパ本体４の取付位置は略同一となる。
【００４３】
したがって、この実施形態２に係るフロントバンパ１によると、実施形態１と同様に、フロントエアダム６を装着しないフロントバンパ本体４の取付フランジ１２を車体前後方向に短くなるように切断し、これをバンパ補強部材５と共に車体パネル１３に固定することにより、フロントエアダム６を装着したフロントバンパ本体４を車体パネル１３に固定することができる。
【００４４】
この際、前記バンパ固定部５０は、取付フランジ１２が取り付けられる取付面と車体パネル１３におけるバンパ補強部材５の上側フランジ３７が取り付けられる取付面とが略同じ高さとなるように設けられており、かつ、バンパ固定部５０の貫通孔５０ａは、フロントエアダム６を装着していない場合のフロントバンパ本体４と車体前後方向の取付位置が変わらないように設定されているので、前記実施形態１と同様に、自動車の仕様変更によってフロントバンパ本体４の組付作業性が悪化することを防止できるとともに、ボンネットフード２が車体に対してロックできないという不具合の発生を防止することができる。また、バンパ固定部５０はバンパ補強部材５に一体形成されているので、前記実施形態１のように別体の支持ブラケット２０を省略でき、もって、部品点数及び組付工数を削減できる。
【００４５】
さらに、前記各バンパ補強部材５の上側フランジ３７の肉厚がフロントバンパ本体４の取付フランジ１２の肉厚に比べて薄くされているので、自動車の仕様によって、ラジエタグリル７の取付位置が上方にずれることはなく、ボンネットフード２と干渉することはない。尚、各仕様間でラジエタグリル７の取付部７ａの高さが略同一となるように、例えばバンパ補強部材５の上側フランジ３７とラジエタグリル７の取付部７ａとの間にワッシャ等を配設するようにすると外観見栄えを向上できる。
【００４６】
尚、この実施形態では、本発明をフロントバンパ１に適用した場合について説明しているが、これに限らず、リヤバンパに適用してもよい。
【００４７】
【発明の効果】
以上説明したように、請求項１の発明に係る自動車のバンパ補強構造によると、バンパ本体のバンパ取付部を支持ブラケットを介して車体に固定し、バンパ本体の裏側で該バンパ本体に結合されるバンパ補強部材の上端取付部を支持ブラケットと車体とで挟持するようにしたので、バンパ本体のバンパ取付部が車体に直接、固定されているバンパ本体、即ち、バンパカバーを装着しない仕様のバンパ本体にバンパカバーを装着する場合、バンパ取付部をその車体前後方向の長さが短くなるように切断して前記支持ブラケットを介して車体に固定することができる。この際、支持ブラケットに、該支持ブラケットにおけるバンパ本体の取付面と車体におけるバンパ補強部材の取付面とが略同一の水平面上に位置するように段差部を形成したので、バンパ本体の取付位置がバンパカバーを装着しない場合と比較して上方へずれることはなくバンパカバーの装着により自動車の仕様を変更する場合に、バンパ本体の組付作業性の悪化をなくすことができるとともに、バンパ本体の他の自動車部品との干渉をなくすことができる。
【００４８】
請求項２及び請求項３記載の発明によると、ラジエタグリル等の部材を車体に取り付ける際に、バンパ補強部材の上端取付部及び支持ブラケットの車体側固定部の肉厚の和が、バンパ取付部の肉厚と略同等ないしそれ以下とされているので、自動車の仕様変更によってラジエタグリル等がボンネットフードに干渉することを防止できる。
【００４９】
請求項４記載の発明によると、バンパ本体の裏側で該バンパ本体に結合されるバンパ補強部材の上端取付部近傍に、バンパ本体のバンパ固定部が固定されるバンパ固定部を一体に形成したので、請求項１の発明と同様に、バンパ取付部が車体に直接、固定されているバンパ本体にバンパカバーを装着する場合、車体前後方向の長さが短くなるように切断したバンパ取付部を、バンパ本体の裏側で車体に結合されるバンパ補強部材のバンパ固定部を介して車体に固定することができる。この際、前記バンパ固定部を、バンパ取付部の取付面が車体におけるバンパ補強部材の取付面と略同一の水平面上に位置するように設けたので、請求項１の発明と同様に、バンパカバーの装着により自動車の仕様を変更する場合に、バンパ本体の組付作業性の悪化をなくし、バンパ本体の他の自動車部品との干渉をなくすことができる。
【００５０】
請求項５及び請求項６記載の発明によると、バンパ補強部材の上端取付部の肉厚がバンパ本体の肉厚と略同等ないしそれ以下とされているので、請求項２の発明と同様に、ラジエタグリル等がボンネットフードと干渉することはない。
【図面の簡単な説明】
【図１】本発明に係る自動車のフロントバンパの正面図である。
【図２】フロントエアダムを装着しない仕様を示し、図１のＡ−Ａ線における断面に相当する図である。
【図３】実施形態１に係る図１のＡ−Ａ線断面図である。
【図４】実施形態１のバンパ補強部材を前側から見た斜視図である。
【図５】実施形態２に係る図３相当図である。
【図６】実施形態２に係る図４相当図である。
【符号の説明】
１フロントバンパ
４フロントバンパ本体
５バンパ補強部材
７ラジエタグリル
７ａ取付部
１２取付フランジ（バンパ取付部）
２０支持ブラケット
２０ａブラケット固定部（車体側固定部）
３７上側フランジ（上端取付部）
４３バンパ側取付部
４５段差部
５０バンパ固定部
５３段差部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bumper reinforcing structure in which a reinforcing member is provided on the back side of a bumper body of an automobile.
[0002]
[Prior art]
Conventionally, as this type of bumper reinforcement structure, for example, as disclosed in Japanese Utility Model Publication No. 2-108285, a bumper reinforcement member extending in the vertical direction is provided on the back side of the bumper body, and the bumper body and the bumper reinforcement member are There is known a structure in which the upper ends of the bumper reinforcing members are fixed to the vehicle body panel in an overlapping manner and the lower end of the bumper reinforcing member is fixed to the middle portion in the vertical direction of the bumper body.
[0003]
That is, in general, when changing the appearance design of a car to respond to various user preferences, the design of the front or rear bumper is changed. Therefore, the bumper body is made common and a panel-like bumper cover obtained by vacuum forming is attached to the front side. However, in this case, the bumper body is distorted by the weight of the bumper cover, and for example, the gap between the hood and the bumper becomes large, and the appearance may be deteriorated. A member is provided.
[0004]
[Problems to be solved by the invention]
However, since the mounting portion of the bumper reinforcing member to the vehicle body is sandwiched between the mounting portion of the bumper body on the vehicle body panel and the vehicle body panel, the upper end of the bumper body is the thickness of the mounting portion of the bumper reinforcing member. It will shift upward. For this reason, the assembling work of the bumper main body becomes difficult, and the gap between the bonnet hood and the upper end of the bumper main body becomes small, and the bonnet hood cannot be locked to the vehicle body.
[0005]
The present invention has been made in view of such a point, and an object of the present invention is to provide a reinforcing member corresponding to an increase in the weight of the bumper main body, in which a bumper cover is attached to the bumper main body to change the appearance design. In the case where the bumper body is provided, the structure for fixing the bumper body to the vehicle body is devised to eliminate the deterioration of the assembly workability of the bumper body, and to eliminate interference with other automobile parts of the bumper body.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, in the first solution of the present invention, when the bumper reinforcing member is provided corresponding to the mounting of the bumper cover, a support bracket for supporting the bumper body on the vehicle body is provided, and the bumper body is attached. The surface is positioned on the same horizontal plane as the mounting surface of the bumper reinforcing member in the vehicle body.
[0007]
Specifically, in the invention of claim 1, a bumper reinforcing member that extends in the vertical direction on the back side of the bumper main body of the automobile and is coupled to the bumper main body, and a mounting portion provided at the upper end of the bumper reinforcing member; It is assumed that the bumper reinforcing structure of the automobile is such that the bumper mounting portion provided at the upper end of the bumper body is fixed to the vehicle body. The bumper mounting portion of the bumper body is fixed to the vehicle body via a support bracket extending in the vehicle longitudinal direction, and the upper end mounting portion of the bumper reinforcing member is clamped between the support bracket fixing portion to the vehicle body and the vehicle body. In addition, the support bracket has a bumper body side so that an attachment surface to which the bumper attachment portion of the bumper body is fixed and an attachment surface of the upper end attachment portion of the bumper reinforcing member in the vehicle body are located on substantially the same horizontal plane. It is set as the structure which forms a low level | step difference part.
[0008]
According to the above configuration, when the bumper cover is not attached to the bumper body, the bumper mounting portion of the bumper body is directly fixed to the vehicle body, and the bumper cover is attached to such a bumper body and the bumper body is attached. When fixing to the vehicle body, the bumper mounting portion of the bumper body is partially cut so that the length in the longitudinal direction of the vehicle body is shortened, and the bumper mounting portion shortened by cutting is cut through the support bracket. Secure to. In this case, since the bumper reinforcing member extending in the vertical direction on the back side of the bumper body is coupled to the bumper body, distortion of the bumper body due to the mounting of the bumper cover is prevented. Further, the upper end mounting portion of the bumper reinforcing member is sandwiched between the support bracket and the vehicle body, and the mounting surface of the bumper main body is positioned on the support bracket on substantially the same horizontal plane as the mounting surface of the bumper reinforcing member in the vehicle body. Since the step portion is formed in the bumper body, the mounting position of the bumper body does not shift upward as compared with the case where the bumper cover is not mounted. In other words, without changing the molding of the bumper body, when changing the specifications of the car by installing the bumper cover, the assembly workability of the bumper body is not deteriorated and interference with other automobile parts of the bumper body is eliminated. be able to.
[0009]
According to the invention of claim 2, in the invention of claim 1, the sum of the thickness of the upper end mounting portion of the bumper reinforcing member and the thickness of the vehicle body side fixing portion of the support bracket is defined as the thickness of the bumper mounting portion of the bumper body. It shall be set to approximately equal to or less than the thickness.
[0010]
According to this configuration, the sum of the thicknesses of the upper end mounting portion of the bumper reinforcing member and the vehicle body side fixing portion of the support bracket is substantially equal to or less than the thickness of the bumper mounting portion, so the bumper cover is attached. The mounting position of the radiator grill etc. in the specification does not deviate upward than the specification without the bumper cover attached, and interference with the bonnet hood can be prevented.
[0011]
When the sum of the thicknesses of the bumper reinforcing member and the support bracket is smaller than the thickness of the bumper mounting portion, for example, the bumper reinforcing member What is necessary is just to arrange | position a washer etc. between the upper end attachment part and the vehicle body side attachment part of a support bracket.
[0012]
According to a third aspect of the present invention, in the second aspect of the present invention, the attachment portion of the radiator grille to the vehicle body is superposed on the vehicle body side fixing portion of the support bracket. Thus, the invention of claim 3 can further embody the configuration of the invention of claim 2.
[0013]
In the second solution of the present invention, when the bumper reinforcing member is provided corresponding to the mounting of the bumper cover, the fixing portion of the bumper main body is integrally formed with the bumper reinforcing member, and the mounting of the bumper main body at the fixing portion is performed. The surface is positioned on the same horizontal plane as the mounting surface of the bumper reinforcing member in the vehicle body.
[0014]
Specifically, in the invention of claim 4, a bumper reinforcing member that extends in the vertical direction on the back side of the bumper main body of the automobile and is coupled to the bumper main body, and a mounting portion provided at the upper end of the bumper reinforcing member; It is assumed that the bumper reinforcing structure of the automobile is such that the bumper mounting portion provided at the upper end of the bumper body is fixed to the vehicle body. And, in the vicinity of the upper end mounting portion of the bumper reinforcing member, a bumper fixing portion that protrudes substantially horizontally toward the bumper main body side is integrally formed, and the bumper mounting portion is fixed to the upper side of the bumper fixing portion, The bumper fixing portion is provided so that the mounting surface of the bumper mounting portion in the bumper fixing portion is positioned on the same horizontal plane as the mounting surface of the upper end mounting portion of the bumper reinforcing member in the vehicle body.
[0015]
According to this configuration, similarly to the first aspect of the invention, when the bumper cover is not attached to the bumper body, the bumper mounting portion of the bumper body is directly fixed to the vehicle body, and the bumper cover is attached to such a bumper body. When the bumper main body is fixed to the vehicle body by mounting the bumper main body, the bumper mounting portion of the bumper main body is partially cut so that the length in the longitudinal direction of the vehicle body is shortened, and the bumper mounting portion shortened by the cutting Is fixed to the vehicle body via a bumper fixing portion of a bumper reinforcing member coupled to the vehicle body on the back side of the bumper body. Since the bumper fixing portion is provided so that the mounting surface of the bumper mounting portion is positioned on substantially the same horizontal plane as the mounting surface of the bumper reinforcing member in the vehicle body, the bumper cover When the specification of the automobile is changed by mounting, it is possible to eliminate the deterioration of assembling workability of the bumper body and to eliminate interference with other automobile parts of the bumper body.
[0016]
Moreover, since the bumper fixing part is integrally formed with the bumper reinforcing member, the number of parts and the number of assembling steps can be reduced.
[0017]
In the invention of claim 5, in the invention of claim 4, the thickness of the upper end mounting portion of the bumper reinforcing member is set to be substantially equal to or less than the thickness of the bumper mounting portion of the bumper body.
[0018]
According to this configuration, since the thickness of the upper end mounting portion of the bumper reinforcing member is substantially equal to or less than the thickness of the bumper body, the same effect as that of the invention of claim 2 can be obtained.
[0019]
According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the attachment portion of the radiator grille to the vehicle body is superimposed on the upper end attachment portion of the bumper reinforcing member. Thus, the invention of claim 6 can embody the configuration of the invention of claim 5.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0021]
(Embodiment 1)
FIG. 1 shows an embodiment in which a bumper reinforcing structure for an automobile according to the present invention is applied to a front bumper 1. The front bumper 1 includes a front bumper body 4 that is substantially continuous with the bonnet hood 2 and the left and right front fenders 3. A front bumper body 4 is provided as a bumper cover on the front surface of the front bumper body 4 according to the specifications of the automobile. The front air dam 6 can be installed.
[0022]
That is, in the specification for mounting the front air dam 6, as shown in the figure, the lower part of the front bumper body 4 is covered by the front air dam 6, and the design of the front air dam 6 is the same as the design of the lower side of the front bumper 1. Become. Further, in this specification, plate-like bumper reinforcement members 5 (only the right side of the vehicle body is shown in FIG. 1) are provided on both the left and right sides of the back side of the front bumper body 4 in response to the increase in weight due to the mounting of the front air dam 6. Arranged. On the other hand, in the specification in which the front air dam 6 is not mounted, the design of the front bumper body 4 becomes the design of the front bumper 1, and the bumper reinforcing member 5 is omitted. That is, the design of the front part of the automobile can be changed by mounting the front air dam 6.
[0023]
The front bumper body 4 is formed by injection molding of a resin material, and a central notch 8 in which a radiator grille 7 is disposed is formed above the center in the vehicle width direction, and on both left and right sides thereof. A pair of left and right headlamp arrangement portions 10 in which the headlamps 9 are arranged are formed. The radiator grille 7 is formed so as to cover substantially the entire center cutout portion 8 when viewed from the front of the vehicle body, and mounting portions 7a described later extending substantially horizontally are integrally formed at both ends in the vehicle width direction. The mounting portion 7a is formed with a through hole for mounting to the vehicle body.
[0024]
An intermediate portion between the central notch portion 8 of each front bumper body 4 and each headlamp disposition portion 10 protrudes from the upper edge of the front wall portion of the bumper and extends so as to be curved upward and toward the rear of the vehicle body. A bumper upper wall portion 11 is formed, and a substantially horizontal mounting flange 12 (bumper mounting portion) is provided at the upper end thereof. As shown in FIG. 3, this mounting flange 12 is a vehicle body panel 13 such as a shroud upper panel. Can be attached to. The vehicle body panel 13 is formed in a substantially L-shaped cross section including a horizontal wall portion 13a to which the mounting flange 12 is fixed, and a vertical wall portion 13b extending substantially vertically upward from the rear end of the horizontal wall portion 13a. ing.
[0025]
In the specification in which the front air dam 6 is not mounted, the mounting flange 12 is directly fixed to the horizontal wall portion 13a of the vehicle body panel 13, as shown in FIG. That is, the mounting flange 12 has a thickness of approximately 2.5 millimeters, is formed longer in the vehicle longitudinal direction than the mounting flange 12 in FIG. 3, and the first mounting hole 15 is formed on the vehicle rear side of the mounting flange 12. It is open. A through hole 13c corresponding to the first mounting hole 15 of the mounting flange 12 is formed in the horizontal wall portion 13a of the vehicle body panel 13, and a nut 22 is welded to the lower side thereof. Then, the mounting flange 12 is overlaid on the upper side of the horizontal wall portion 13a of the vehicle body panel 13, and the mounting portion 7a of the radiator grille 7 is further stacked on the upper side, and then the bolts 25 are attached to the hole portions 15 and 13c from above. The front bumper body 4 and the radiator grille 7 not fitted with the front air dam 6 are both fixed to the vehicle body panel 13 by being inserted into the nut 22 and screwed into the nut 22.
[0026]
Next, specifications for mounting the front air dam 6 will be described. The front air dam 6 is in the form of a panel obtained by vacuum molding a resin material, and is formed so as to cover about 2/3 of the front bumper body 4 from the vicinity of the lower end thereof upward as shown in FIG. A pair of fog lamp storage ports 27 are formed on both ends of the front air dam 6 in the vehicle width direction so as to correspond to the fog lamp storage ports of the front bumper body 4. Further, an air introduction port 28 is formed between the fog lamp storage ports 27 so as to correspond to the air introduction port of the front bumper body 4.
[0027]
As shown in FIG. 3, a plurality of attachment members 29 to the front bumper body 4 are provided apart from each other at predetermined positions of the front air dam 6. The air dam side of each mounting member 29 is fixed to the back surface of the front air dam 6, while the front bumper body 4 side is provided with a fastener 30 inserted into the front wall portion of the front bumper body 4. When the front air dam 6 is attached, the fog lamp storage port 27 of the front air dam 6 coincides with the fog lamp storage port of the front bumper body 4, and the air introduction port 28 of the front air dam 6 is connected to the air introduction port of the front bumper body 4. Match.
[0028]
The bumper reinforcing member 5 is formed by press-molding a steel plate having a thickness of approximately 1.2 millimeters, and is disposed on the back side of the left and right bumper upper walls 11. The bumper reinforcing member 5 has an upper end fixed to the vehicle body panel 13 and extends downward from the upper end to a position corresponding to the vicinity of the upper edge of the front air dam 6 as a whole as shown in FIGS. After that, it is bent forward of the vehicle body, and at its end, a lower flange 33 fixed to the reinforcing member fixing portion 18 of the front bumper body 4 extends downward along the back surface of the front bumper body 4. In the reinforcing member fixing portion 18 of the front bumper body 4, a pair of mounting holes 14 penetrating in the vehicle longitudinal direction are arranged side by side in the vehicle width direction, while on the lower flange 33 of each bumper reinforcing member 5. A pair of holes 34 are formed so as to coincide with the mounting hole 14 in a state where the reinforcing member fixing part 18 of the front bumper body 4 is joined from the rear side of the vehicle body. A nut 35 is welded to the rear side of the vehicle body of the lower flange 33. When the lower flange 33 and the reinforcing member fixing portion 18 of the front bumper body 4 are fixed, the vehicle body of the front bumper body 4 is fixed. Bolts 36 are inserted into the mounting holes 14 and the holes 34 from the front, and then screwed into the nuts 35.
[0029]
On the other hand, an upper flange 37 as an upper end mounting portion extending substantially horizontally is formed at the upper end portion of the bumper reinforcing member 5, and the upper flange 37 is a bracket of the support bracket 20 disposed above the upper flange 37. It is fixed to the horizontal wall portion 13a of the vehicle body panel 13 together with the fixing portion 20a. The shape of the main body portion 38 between the upper flange 37 and the lower flange 33 of the bumper reinforcing member 5 is slightly inclined downward so that the upper portion thereof is located in front of the vehicle body from the front end of the upper flange 37 to the lower side. It extends to. The lower part of the inclined part is formed so as to extend substantially vertically, and the lower end of the lower part is relatively loosely bent toward the front of the vehicle body. It is continuous with the upper end of the flange 33.
[0030]
As shown in FIG. 4, the lower bent portion of the main body portion 38 and the horizontal portion on the front side of the vehicle body are formed wider on both sides in the vehicle width direction than the upper portion of the main body portion 38. Further, a groove 39 having a U-shaped cross section that protrudes toward the back side is formed at the center of the main body 38 in the vehicle width direction so as to extend linearly from the upper end to the lower end of the main body 38. Further, both edge portions in the vehicle width direction of the main body portion 38 are bent at substantially right angles toward the rear of the vehicle body, and the rigidity of the bumper reinforcing member 5 is improved together with the groove portion 39 described above.
[0031]
Next, the fixing of the front bumper body 4 to the vehicle body will be described. First, the mounting flange 12 of the front bumper body 4 formed as shown in FIG. The rear part of the vehicle body in which the mounting hole 15 is formed is removed from the front bumper body 4, and then the second mounting hole 16 is opened in the mounting flange 12 of the front part of the vehicle body, which is the remaining part. It fixes to the bumper side attaching part 43 of the support bracket 20 extended horizontally. That is, two second mounting holes 16 of the mounting flange 12 are arranged side by side in the vehicle width direction, and two through holes 43a and 43a are formed in the bumper side mounting portion 43 of the support bracket 20 correspondingly. A nut 40 is welded to the lower side of the support bracket 20. Then, after the lower surface of the mounting flange 12 is overlaid on the upper surface of the bumper side mounting portion 43 of the support bracket 20, both are fastened by the bolt 41 and the nut 40.
[0032]
A bracket fixing portion 20a in the rear portion of the vehicle body of the support bracket 20 extends rearward substantially horizontally, and the bracket fixing portion 20a corresponds to the through hole 13c of the horizontal wall portion 13a of the vehicle body panel 13. A through hole 20b is formed. Further, a through hole is formed in the upper flange 37 of the bumper reinforcing member 5 so as to correspond to the through hole 13 c of the horizontal wall portion 13 a of the vehicle body panel 13. An upper flange 37 of the bumper reinforcing member 5 is disposed between the bracket fixing portion 20a of the support bracket 20 and the horizontal wall portion 13a of the vehicle body panel 13, and further, the radiator is disposed above the bracket fixing portion 20a of the support bracket 20. The mounting portions 7 a of the grill 7 are overlapped and fastened with bolts 25 and nuts 22.
[0033]
A step 45 is provided at an intermediate portion of the support bracket 20 in the front-rear direction of the vehicle body. The step 45 includes the upper surface of the bumper side mounting portion 43 of the support bracket 20 and the horizontal wall portion 13a of the vehicle body panel 13. Is formed so that the upper surface thereof is positioned on substantially the same horizontal plane. That is, the bumper side mounting portion 43 is positioned relatively low so that the upper surface of the bumper side mounting portion 43 of the support bracket 20 and the lower surface of the upper flange 37 of the bumper reinforcing member 5 are substantially the same height. The front bumper body 4 is not displaced upward by providing the bumper reinforcing member 5.
[0034]
Further, the through hole 43a of the bumper side mounting portion 43 of the support bracket 20 is arranged such that the front bumper body 4 shown in FIG. 3 is at the same position with respect to the vehicle body in the longitudinal direction of the vehicle body as the front bumper body 4 shown in FIG. Due to this and the formation of the step portion 45, even when the front air dam 6 is mounted, the front air dam 6 is not mounted and the mounting position of the front bumper body 4, that is, The positions in the longitudinal direction and the vertical direction of the vehicle body are substantially the same.
[0035]
Therefore, according to the front bumper 1 according to the first embodiment, in the specification in which the front air dam 6 is not mounted, the rear part of the vehicle body of the mounting flange 12 of the front bumper body 4 can be directly fixed to the vehicle body panel 13. On the other hand, in the specification for mounting the front air dam 6, the front portion of the mounting flange 12 can be fixed to the vehicle body panel 13 via the support bracket 20 by cutting off the rear portion of the mounting flange 12 and the front bumper body 4. Since the bumper reinforcing member 5 is disposed on the back side of the front bumper body 4 and coupled to the front bumper body 4, distortion due to an increase in weight of the front bumper body 4 can be prevented.
[0036]
At this time, on the support bracket 20, the upper surface (mounting surface) of the bumper side mounting portion 43 to which the mounting flange 12 of the front bumper body 4 is mounted and the upper flange 37 of the bumper reinforcing member 5 in the vehicle body panel 13 are mounted. The step portion 45 is formed so that the upper surface (mounting surface) of the wall portion 13a is substantially the same height, and the second mounting hole 16 opened in the front portion of the vehicle body of the support bracket 20 mounts the front air dam 6. Since the front bumper body 4 that is not mounted and the mounting position in the longitudinal direction of the vehicle body are set so as not to change, the mounting position of the front bumper body 4 that is mounted with the front air dam 6 is that when the front air dam 6 is not mounted. Can be substantially the same. That is, according to the front bumper 1, it is possible to prevent the assembly workability of the front bumper body 4 from being deteriorated by changing the specifications of the automobile, and the gap between the bonnet hood 2 and the front bumper body 4 is widened so that the bonnet hood 2 You won't be able to lock your car body or lose its appearance.
[0037]
Further, since the sum of the thicknesses of the upper flange 37 of the bumper reinforcing member 5 and the bracket fixing portion 20a of the support bracket 20 and the thickness of the mounting flange 12 of the front bumper body 4 are substantially equal, The mounting position of the radiator grille 7 does not shift in the vertical direction. When the sum of the thicknesses of the bumper reinforcing member 5 and the support bracket 20 is relatively small, for example, the support bracket 20 and the radiator grille are set so that the mounting heights of the mounting portions 7a of the radiator grille 7 are substantially the same. What is necessary is just to arrange | position a washer etc. between the superposition | polymerization parts with 7 attachment parts 7a.
[0038]
The support bracket 20 may be integrally provided on the upper surface of the upper flange 37 of the bumper reinforcing member 5 by welding.
[0039]
(Embodiment 2)
FIG. 5 shows a front bumper 1 of an automobile according to Embodiment 2 of the present invention. Since the front bumper 1 of the second embodiment is configured in the same manner as that of the first embodiment except for the structure of the bumper reinforcing member 5, the same portions are denoted by the same reference numerals and the description thereof will be given below. Omitted.
[0040]
Specifically, the support bracket 20 in the first embodiment is omitted, and the mounting flange 12 of the front bumper body 4 is fixed to the bumper fixing portion 50 integrally formed near the upper flange 37 of the bumper reinforcing member 5. I made it. That is, as shown in FIG. 6, the bumper fixing portion 50 has a substantially rectangular plate shape, and the front edge of the vehicle body and both edge portions in the vehicle width direction are separated from the main body portion 38 of the bumper reinforcing member 5. The rear edge of the vehicle body is formed integrally with the bumper reinforcing member 5 so as to be continuous with the vicinity of the upper flange 37 and protrudes substantially horizontally toward the front bumper body 4 side.
[0041]
In the bumper fixing portion 50, two through holes 50a and 50a are provided in parallel in the vehicle width direction as in the vehicle body front portion of the support bracket 20 of the first embodiment, and as shown in FIG. A nut 52 is welded to the lower side, and the lower surface of the mounting flange 12 is overlapped on the upper surface thereof and fastened with a bolt 41 and a nut 52. On the other hand, the upper flange 37 (upper end mounting portion) and the lower flange 33 of each bumper reinforcing member 5 are provided on the horizontal wall portion 13a of the vehicle body panel 13 and the reinforcing member fixing portion 18 of the front bumper body 4 as in the first embodiment. Further, the mounting portion 7a of the radiator grille 7 is superimposed on the upper flange 37 of the bumper reinforcing member 5 and fixed together. In addition, 37a opened on the upper flange 37 is a through hole through which the bolt 25 is inserted.
[0042]
The bumper fixing portion 50 includes an upper surface of the bumper fixing portion 50, that is, a surface (mounting surface) to which the mounting flange 12 of the front bumper body 4 is attached, and a vehicle body panel 13 to which the upper flange 37 of the bumper reinforcing member 5 is attached. It is provided so that the upper surface (mounting surface) of the horizontal wall part 13a may be located on substantially the same horizontal plane. That is, between the upper flange 37 of the bumper reinforcing member 5 and the bumper fixing portion 50, a stepped portion 53 having a low side on the bumper fixing portion 50 side is provided, and the stepped portion 53 is formed on the upper surface and the upper side of the bumper fixing portion 50. The lower surface of the flange 37 is formed to have substantially the same height. That is, this step is a dimension corresponding to the thickness of the upper flange 37. For this reason, the front bumper body 4 is not displaced upward by providing the bumper reinforcing member 5. Further, the position of the through hole 50a of the bumper fixing portion 50 is set so that the mounting position in the front-rear direction of the vehicle body and the front bumper main body 4 not mounted with the front air dam 6 is the same as in the first embodiment. Yes. As a result, the mounting position of the front bumper body 4 is substantially the same for the specification for mounting the front air dam 6 and the specification for not mounting it.
[0043]
Therefore, according to the front bumper 1 according to the second embodiment, as in the first embodiment, the mounting flange 12 of the front bumper main body 4 to which the front air dam 6 is not mounted is cut so as to be shortened in the longitudinal direction of the vehicle body. By fixing to the vehicle body panel 13 together with the reinforcing member 5, the front bumper body 4 on which the front air dam 6 is mounted can be fixed to the vehicle body panel 13.
[0044]
At this time, the bumper fixing portion 50 is provided so that the mounting surface to which the mounting flange 12 is mounted and the mounting surface to which the upper flange 37 of the bumper reinforcing member 5 in the vehicle body panel 13 is mounted have substantially the same height. And since the through-hole 50a of the bumper fixing | fixed part 50 is set so that the mounting position of the front bumper main body 4 when not mounting | wearing with the front air dam 6 and a vehicle body front-back direction may not change, it is the same as that of the said Embodiment 1. In addition, it is possible to prevent the assembly workability of the front bumper body 4 from being deteriorated due to the specification change of the automobile, and it is possible to prevent the occurrence of the problem that the hood hood 2 cannot be locked to the vehicle body. Further, since the bumper fixing portion 50 is integrally formed with the bumper reinforcing member 5, the separate support bracket 20 can be omitted as in the first embodiment, and the number of parts and the number of assembling steps can be reduced.
[0045]
Further, since the thickness of the upper flange 37 of each bumper reinforcing member 5 is made thinner than the thickness of the mounting flange 12 of the front bumper body 4, the mounting position of the radiator grille 7 is set upward depending on the specifications of the automobile. There is no slippage, and there is no interference with the hood 2. For example, a washer or the like is disposed between the upper flange 37 of the bumper reinforcing member 5 and the mounting portion 7a of the radiator grill 7 so that the height of the mounting portion 7a of the radiator grille 7 is substantially the same between the specifications. By doing so, the appearance can be improved.
[0046]
In this embodiment, the case where the present invention is applied to the front bumper 1 is described. However, the present invention is not limited to this and may be applied to a rear bumper.
[0047]
【The invention's effect】
As described above, according to the bumper reinforcing structure for an automobile according to the first aspect of the present invention, the bumper mounting portion of the bumper body is fixed to the vehicle body via the support bracket, and is coupled to the bumper body on the back side of the bumper body. Since the upper end mounting part of the bumper reinforcement member is sandwiched between the support bracket and the vehicle body, the bumper body in which the bumper mounting part of the bumper body is directly fixed to the vehicle body, that is, the bumper body that does not have the bumper cover attached When the bumper cover is attached to the vehicle body, the bumper mounting portion can be cut so that the length in the longitudinal direction of the vehicle body is shortened and fixed to the vehicle body via the support bracket. At this time, the stepped portion is formed on the support bracket so that the mounting surface of the bumper body in the support bracket and the mounting surface of the bumper reinforcing member in the vehicle body are located on substantially the same horizontal plane. Compared to the case where the bumper cover is not installed, it will not be displaced upward, and when the specifications of the vehicle are changed by installing the bumper cover, it is possible to eliminate the deterioration of the workability of the bumper body. Interference with other automobile parts can be eliminated.
[0048]
According to the second and third aspects of the invention, when attaching a member such as a radiator grill to the vehicle body, the sum of the thicknesses of the upper end attachment portion of the bumper reinforcing member and the vehicle body side fixing portion of the support bracket is the bumper attachment portion. Therefore, it is possible to prevent the radiator grill and the like from interfering with the hood hood by changing the specification of the automobile.
[0049]
According to the invention described in claim 4, since the bumper fixing portion to which the bumper fixing portion of the bumper body is fixed is integrally formed in the vicinity of the upper end mounting portion of the bumper reinforcing member coupled to the bumper body on the back side of the bumper body. As in the first aspect of the invention, when the bumper cover is attached to the bumper main body in which the bumper mounting portion is directly fixed to the vehicle body, the bumper mounting portion cut so that the length in the longitudinal direction of the vehicle body is shortened, It can be fixed to the vehicle body via a bumper fixing part of a bumper reinforcing member that is coupled to the vehicle body on the back side of the bumper body. In this case, the bumper fixing portion is provided so that the mounting surface of the bumper mounting portion is positioned on the substantially same horizontal plane as the mounting surface of the bumper reinforcing member in the vehicle body. When the specification of the automobile is changed by mounting, the deterioration of the workability of assembling the bumper body can be eliminated, and interference with other automobile parts of the bumper body can be eliminated.
[0050]
According to the invention of claim 5 and claim 6, since the thickness of the upper end mounting portion of the bumper reinforcing member is substantially equal to or less than the thickness of the bumper body, similarly to the invention of claim 2, Radiator grill etc. will not interfere with the hood.
[Brief description of the drawings]
FIG. 1 is a front view of a front bumper of an automobile according to the present invention.
FIG. 2 is a view corresponding to a cross section taken along line AA of FIG. 1, showing a specification without a front air dam.
3 is a cross-sectional view taken along line AA in FIG. 1 according to the first embodiment.
FIG. 4 is a perspective view of the bumper reinforcing member according to the first embodiment as viewed from the front side.
FIG. 5 is a view corresponding to FIG. 3 according to the second embodiment.
FIG. 6 is a view corresponding to FIG. 4 according to the second embodiment.
[Explanation of symbols]
1 Front bumper
4 Front bumper body
5 Bumper reinforcement members
7 Radiator grill
7a Mounting part
12 Mounting flange (bumper mounting part)
20 Support bracket
20a Bracket fixing part (vehicle body side fixing part)
37 Upper flange (upper end mounting part)
43 Bumper side mounting
45 steps
50 Bumper fixing part
53 steps

Claims

A bumper reinforcing member that extends in the vertical direction on the back side of the bumper main body of the automobile and is coupled to the bumper main body. The mounting portion provided at the upper end of the bumper reinforcing member and the bumper mounting portion provided at the upper end of the bumper main body In the bumper reinforcement structure of automobiles that are fixed to
The bumper mounting portion of the bumper body is fixed to the vehicle body via a support bracket extending in the vehicle body longitudinal direction,
The upper end mounting portion of the bumper reinforcing member is sandwiched between the fixing portion of the support bracket to the vehicle body and the vehicle body,
The support bracket has a low step on the bumper body side so that the mounting surface to which the bumper mounting portion of the bumper body is fixed and the mounting surface of the upper end mounting portion of the bumper reinforcing member in the vehicle body are located on substantially the same horizontal plane. The bumper reinforcement structure of the motor vehicle characterized by the above-mentioned.

In claim 1,
The sum of the thickness of the upper end mounting portion of the bumper reinforcing member and the thickness of the vehicle body side fixing portion of the support bracket is set to be substantially equal to or less than the thickness of the bumper mounting portion of the bumper body. A bumper reinforcement structure for automobiles.

In claim 2,
A bumper reinforcement structure for an automobile, wherein a mounting portion of the radiator grille on the vehicle body is superposed on the vehicle body side fixing portion of the support bracket.

A bumper reinforcing member that extends in the vertical direction on the back side of the bumper main body of the automobile and is coupled to the bumper main body. The mounting portion provided at the upper end of the bumper reinforcing member and the bumper mounting portion provided at the upper end of the bumper main body In the bumper reinforcement structure of automobiles that are fixed to
Near the upper end mounting portion of the bumper reinforcing member, a bumper fixing portion that protrudes substantially horizontally toward the bumper main body side is integrally formed, and the bumper mounting portion is fixed to the upper side of the bumper fixing portion,
The bumper fixing portion is provided such that the mounting surface of the bumper mounting portion in the bumper fixing portion is located on the substantially same horizontal plane as the mounting surface of the upper end mounting portion of the bumper reinforcing member in the vehicle body. Car bumper reinforcement structure.

In claim 4,
A bumper reinforcement structure for an automobile, wherein a thickness of an upper end mounting portion of the bumper reinforcing member is set to be substantially equal to or less than a thickness of a bumper mounting portion of a bumper body.

In claim 5,
A bumper reinforcing structure for an automobile, wherein a mounting portion of the radiator grille to the vehicle body is superposed on an upper side of the upper end mounting portion of the bumper reinforcing member.