JP3814553B2 - Body structure - Google Patents

Body structure Download PDF

Info

Publication number
JP3814553B2
JP3814553B2 JP2002107500A JP2002107500A JP3814553B2 JP 3814553 B2 JP3814553 B2 JP 3814553B2 JP 2002107500 A JP2002107500 A JP 2002107500A JP 2002107500 A JP2002107500 A JP 2002107500A JP 3814553 B2 JP3814553 B2 JP 3814553B2
Authority
JP
Japan
Prior art keywords
vehicle body
cross
end cap
coupled
body structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2002107500A
Other languages
Japanese (ja)
Other versions
JP2003300482A (en
Inventor
正英 水口
邦夫 加藤
達司 清水
英輔 岡本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP2002107500A priority Critical patent/JP3814553B2/en
Publication of JP2003300482A publication Critical patent/JP2003300482A/en
Application granted granted Critical
Publication of JP3814553B2 publication Critical patent/JP3814553B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Body Structure For Vehicles (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、車体構造に関するものであり、特に、ハイドロフォームにより成形されたクロスメンバを用いたものである。
【0002】
【従来の技術】
車体のフロントボデーの主要な構成部品であるサイドメンバ、クロスメンバは、衝突時のエネルギー吸収のために、重要な役割を担っている。オフセット衝突時には、クロスメンバにて衝突のエネルギーを受け、そのエネルギーを両サイドメンバに分散することで、衝突エネルギーを吸収している。そのため、クロスメンバは両サイドメンバの先端部に、掛け渡すように結合されている。
【0003】
従来のクロスメンバは、複数の鋼板等を用い、板金プレス加工、折り曲げ加工等により成形し、互いを溶接等して作製している。
【0004】
この方法では、鋼板等を板金プレス加工、折り曲げ加工等して成形するために、スプリングバックの影響を避けることができず、又、溶接によるひずみの影響もあり、部品精度のばらつきがあった。そのため、クロスメンバをサイドメンバに組み付ける時に難があり、周辺部品を取付ける際にも、様々な工夫をして位置決めを行なっている。
【0005】
例えば、特開平7−304462号公報に示すように、コンパクトな構成で周辺部品の取付位置の位置決めを行なう方法も提案されている。
【0006】
しかしながら、剛性向上のためクロスメンバ自体を複数枚の鋼板を組み合わせて作製しており、そのため、重量が重くなり軽量化が難しく、更に加工の工程も多くなりコストの面でも課題となっている。
【0007】
そこで、上記問題点を解決する方法として、ハイドロフォームにて成形したクロスメンバを使用することが考えられる。
【0008】
ハイドロフォームは、成形金型の間に素材となる鋼管をセットし、鋼管内に高圧の液体を充填して、液体の圧力により鋼管を金型内で拡管させることで金型の形状に成形するものである。
【0009】
上記ハイドロフォームによる成形方法では、従来複数の部品であったものを一体で成形ができるため、部品数の削減、溶接の削減等ができ、又、拡管時に鋼管が加工硬化することにより、薄い肉厚でも強度があるため、高剛性化、軽量化、低コスト化が可能となる。更に、成形後のスプリングバックがほとんど発生しないため、部品精度の向上も可能である。
【0010】
上記利点があるため、ハイドロフォームにより成形されたクロスメンバを使用した場合、部品精度や組み付け時の問題点等の多くを解決することできる。
【0011】
【発明が解決しようとする課題】
ところが、ハイドロフォームで成形されたクロスメンバ等は、閉断面形状に成形されることから、溶接のためのフランジ等がないため、サイドメンバ等と結合させるには溶接のためのフランジ等をあらためて取付ける必要があり、結合工程の手順の複雑化、結合構造の複雑化を招き、サイドメンバ等との溶接が容易ではなくなり、場合によっては結合強度が不足するおそれがある。
【0012】
本発明は、上記問題に鑑み、ハイドロフォームで成形されたクロスメンバを、サイドメンバに容易に溶接できるコンパクトな車体構造を提供する。
【0013】
【課題を解決するための手段】
上記課題を解決する本発明に係る車体構造は、ハイドロフォームによりフランジのない閉断面構造に一体成形されたクロスメンバ部材を、サイドメンバ部材の先端部側面に、サイドメンバ部材間に掛け渡すように結合し、サイドメンバ部材の先端部を閉塞するように取付けた平板のエンドキャップ部材を、クロスメンバ部材の外周面に結合するようにエンドキャップ部材と同一平面上に延設したことを特徴とする。
【0014】
上記課題を解決する本発明に係る車体構造は、ハイドロフォームにて成形されたクロスメンバ部材を、サイドメンバ部材の先端部側面に、サイドメンバ部材間に掛け渡すように結合し、サイドメンバ部材の先端部を閉塞するように取付けたエンドキャップ部材を、クロスメンバ部材の外周面に結合するように延設し、エンドキャップ部材の延設された部位、つまり、クロスメンバと重なり合う部位を更に上下方向に延設し、エンドキャップ部材の延設された部位で覆われるクロスメンバの閉断面形状の内部に、車体の前後方向に貫通するようにパイプ状のナット部材を設け、外側からフック部材が螺合可能にしたことを特徴とする。
【0015】
上記課題を解決する本発明に係る車体構造は、エンドキャップ部材に突設部となるボルトを設け、リンフォース部材をこのボルトに取付けて、サイドメンバ部材間に掛け渡すようにしたことを特徴とする。
又、上記課題を解決する本発明に係る車体構造は、サイドメンバ部材の閉断面を八角形状にすると共に、サイドメンバ部材に対して、三面の接触面を有するブラケットを介して、クロスメンバ部材を結合することを特徴とする。
【0016】
【発明の実施の形態】
図1は、車体の主要フレームの一例を示す概略斜視図である。
【0017】
図1に示すように、車体前部の主要フレームは、車体の両側部に左右一対に、車体の前後方向に延設されたサイドメンバ1と、両サイドメンバ1の先端部に結合され、両サイドメンバ1間を掛け渡すように配設されたクロスメンバ2と、クロスメンバ2と同様に両サイドメンバ1間を掛け渡すように配設され、補強の役割を担うリンフォース3とを有している。更に、クロスメンバ2の両端部から上方に延設されるように設けられたサポートパネル4と、サポートパネル4に支持され、車体前部上方のフレームとなるアッパークロスメンバ5とを有している。
【0018】
本発明では、クロスメンバ2をハイドロフォームにて成形し、そのクロスメンバ2をサイドメンバ1に容易に結合できる構造としたことが特徴である。後述する図においては、図1における領域Aの部分(車体の左前部)の構造を、わかりやすいように拡大して示す。車体の右前部の構造は、左前部と対称的な構造であるため、図及び説明は省略する。
【0019】
図2は、本発明に係る実施形態の一例を示す車体構造の斜視図である。一部の構成部品を破断して示し、構成がわかるように、各構成部品を分離して示した。
【0020】
図2に示すように、本発明に係る車体構造は、車体前部の両側部に車両の前後方向に延設され、閉断面形状を有するサイドメンバ1と、両サイドメンバ1の先端部の内側面部に、両サイドメンバ1間を掛け渡すように結合された閉断面を有するクロスメンバ2と、サイドメンバ1とクロスメンバ2に挟まれるように配設され、溶接によりサイドメンバ1とクロスメンバ2を容易に結合させるブラケット6と、サイドメンバ1の先端部を閉塞するように取付られたエンドキャップ7と、エンドキャップ7の前面に配設され、クロスメンバ2と同様に両サイドメンバ1間を掛け渡すように配設された図示していないリンフォースを有している。
【0021】
上記サイドメンバ1は、長手方向の側端部にフランジ1c、1dを有するコの字状のインナーサイドメンバ1a、アウターサイドメンバ1bにより形成されており、フランジ1c、1dを互い重ね合わせて溶接することで、閉断面を形成している。更に、前面端部に位置するフランジ1eを用いて、エンドキャップ7を溶接にて結合している。
【0022】
上記クロスメンバ2は、ハイドロフォームにより矩形断面を有するパイプ状に一体に成形されており、その両端部が上方に向くように加工されている。両端部の内面側には、溶接時のスペースを確保するための矩形状の切り欠き2aを有しており、又、前面側には溶接用のガンを挿入するための矩形状の開口部2hを有している。なお、切り欠き2aは、溶接時のスペースが確保できるようであれば、必ずしも必要ではない。
【0023】
上記ブラケット6は、クロスメンバ2側の形状が、クロスメンバ2をコの字状に包み込むように成形されており、又、サイドメンバ1側の形状が、サイドメンバ1との接触面積を増やすため、結合するサイドメンバ1の側面の形状に合うように三面で形成されている。更に、ブラケット6の側面には、クロスメンバ2の矩形状の開口部2hに合わせて、同様の開口部6hが成形されている。このブラケット6は、サイドメンバ1−クロスメンバ2間の結合剛性の補強のために用いている。
【0024】
上記エンドキャップ7は、サイドメンバ1の端部及びそのフランジ1eを覆い、更に、サイドメンバ1の側面に配設されるブラケット6の外周面(フロントサイド側)を覆う大きさを有している。エンドキャップ7には、2つの矩形状の開口部が成形されており、1つはクロスメンバ2の開口部2h及びブラケット6の開口部6hと同様の開口部7hであり、もう1つはサイドメンバ1の端部のほぼ中心位置に設けられた開口部7aである。この開口部7aも溶接用のガンを挿入する目的のものである。更に、エンドキャップ7には背面から前面へ貫通するように、突設部となる4本のボルト7bが溶接して設けられており、この4本のボルト7bを、後述するリンフォースに通して固定する。エンドキャップ7は、1つの部品でサイドメンバ1の蓋、サイドメンバ1−クロスメンバ2間の結合強度の補強及びリンフォースの保持の3つの役割を担っている。
【0025】
上記車体構造では、溶接用のフランジを有しないクロスメンバ2を、サイドメンバ1の先端部側面に結合したことが特徴である。更に、ブラケット6及びエンドキャップ7を用いることにより、ハイドロフォームにて成形されたクロスメンバ2のサイドメンバ1への結合強度を向上させることができる。
【0026】
図3は、図2に示した各構成部品を結合した状態を示す図である。図3(a)は、車体構造の斜視図であり、図3(b)は、図3(a)のB−B’矢視断面図である。図3(a)においては、一部の構成部品を破断して示し、エンドキャップに取付けるリンフォースも図示した。
【0027】
図3(a)に示すように、サイドメンバ1の側面にクロスメンバ2がブラケット6を介して結合され、サイドメンバ1の先端部には、エンドキャップ7がサイドメンバ1の先端部及びブラケット6の外周面を覆うように結合される。この時、開口部2h、6h、7hの位置が同じになるように、クロスメンバ2、ブラケット6及びエンドキャップ7が結合されている。図3(b)は、上記構成状態がわかるように、図3(a)のB−B’を矢視断面図にて示したものである。
【0028】
リンフォース3はエンドキャップ7の前面に、両サイドメンバ1間を掛け渡すように配設されている。リンフォース3の両側端部にはそれぞれ4つの貫通孔3aが設けられており、ここにエンドキャップ7の4本のボルト7bを貫通させ、ナット等で固定している。リンフォース3の断面形状としては、剛性向上のため、図3(a)に示すような2つの台形断面を有するような形状でもよい。
【0029】
各構成部材の結合手順としては、例えば、最初に、サイドメンバ1の側面にブラケット6及びクロスメンバ2を配置し、スポット溶接のガンを開口部7a及び開口部2h、6h、7hにそれぞれ挿入して、サイドメンバ1−ブラケット6−クロスメンバ2間を溶接する。次に、エンドキャップ7をサイドメンバ1の前面端部に配置し、スポット溶接のガンの片方を開口部2aに挿入して、クロスメンバ2−ブラケット6−(サイドメンバ1−)エンドキャップ7間を溶接する。他の溶接点、例えば、ブラケット6−クロスメンバ2間やサイドメンバ1−エンドキャップ7間は、任意の手順で溶接してもよい。
【0030】
図4は、図2に示したエンドキャップの他の一例を示す斜視図である。一部の構成部品を破断して示した。
【0031】
図4に示すように、エンドキャップ8は、エンドキャップ8のクロスメンバ側に延設された部位が、更に上方に延設する延設部8cを有しており、延設部の上方にはアッパークロスメンバ5を結合するための折曲部8dを設けている。他の構成は前述したエンドキャップ7と同じである。延折部8c及び折曲部8dは、図1に示すサポートパネル4に該当し、エンドキャップ8は、1つの部品でサイドメンバ1の蓋、サイドメンバ1−クロスメンバ2間の結合の補強、リンフォース3の保持及びアッパークロスメンバ5の保持の4つの役割を担っている。
【0032】
図5は、図4に示したエンドキャップの更なる他の一例を示す図である。図5(a)は、エンドキャップ等の斜視図であり、図5(b)は、図5(a)のC−C’矢視断面図である。図5(a)においては、わかりやすくするために、一部の構成部品を破断して示し、又、一部の構成部品を省略した。
【0033】
図5(a)に示すように、エンドキャップ9は、エンドキャップ9のクロスメンバ側に延設された部位が、更に下方に延設する延設部9eを有し、延設部9e中心部には、外部からアイボルト式の牽引フック等が螺合可能なパイプナット10を貫入するための孔が設けられている。他の構成は前述したエンドキャップ8と同じである。
【0034】
図5(b)に示すように、パイプ状のパイプナット10はエンドキャップ9及びクロスメンバ2の閉断面形状を貫通して、車体の前後方向に設けられており、パイプナット10の固定のため溶接部分11にてガス溶接等により結合されている。このことにより、エンドキャップ9は、リンフォース3等の保持だけではなく、牽引フック等を取付けるパイプナット10の補強も兼ねることができる。
【0035】
上記車体構造により、簡単な構造で周辺部品の取付及び結合部品の補強をも兼ねることができ、又、バンパ内に牽引フック部分が隠れるため見栄えも向上する。
【0036】
上述したように、本発明を実施例に基づく図にて説明してきたが、本発明は、各構成部品の形状等を図に示すものに限定するものではなく、本発明の範囲で適切な形状等に変更してもよい。
例えば、図2に示す本発明の実施形態の一例では、溶接用のガンを挿入するための矩形状の開口部2h、6h、7hを設けるとしたが、溶接時のスペースが確保できるようであれば、開口部2h、6h、7hは必ずしも必要ではなく、図6に示す如く、開口部2h、6h、7hを廃した構成としてもよい。
又、図4に示すエンドキャップの他の一例においても、溶接時のスペースが確保できるようであれば、開口部8hを廃してもよく、同様に図5に示すエンドキャップの更なる他の一例においても、溶接時のスペースが確保できるようであれば、開口部2h、9hを廃してもよいことは言及するまでもない(エンドキャップの他の一例において開口部8hを廃した例、エンドキャップの更なる他の一例において開口部2h、9hを廃した例は、ともに図示しない。)。
【0037】
【発明の効果】
請求項1、請求項4に係る発明によれば、ハイドロフォームにより成形されたクロスメンバの利点を十分に用いつつ、サイドメンバ部材とクロスメンバ部材とを強固に結合可能な簡単な構造を提供できる。
【0038】
請求項2に係る発明によれば、簡易な構造で強固な牽引フックの取付部を提供できる。
【0039】
請求項3に係る発明によれば、リンフォース部材をサイドメンバ部材に強固に結合しつつ、省スペースな構造を提供できる。
【図面の簡単な説明】
【図1】車体の主要フレームの一例を示す概略斜視図である。
【図2】本発明に係る実施形態の一例を示す車体構造の斜視図である。
【図3】図2に示す構成部品を結合した状態を示す図である。(a)は、斜視図であり、(b)は、(a)のB−B’矢視断面図である。
【図4】エンドキャップの他の一例を示す斜視図である。
【図5】エンドキャップの更なる他の一例を示す図である。(a)は、斜視図であり、(b)は、(a)のC−C’矢視断面図である。
【図6】本発明に係る実施形態の他の一例を示す車体構造の斜視図である。
【符号の説明】
1 サイドメンバ
2 クロスメンバ
2h 開口部
3 リンフォース
6 ブラケット
6h 開口部
7 エンドキャップ
7a 開口部
7b ボルト
7h 開口部
8 エンドキャップ
8a 開口部
8b ボルト
8c 延設部
8d 支持部
8h 開口部
9 エンドキャップ
9a 開口部
9b ボルト
9c 延設部
9d 支持部
9e 延設部
9h 開口部
10 パイプナット
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle body structure, and in particular, uses a cross member formed by hydroforming.
[0002]
[Prior art]
Side members and cross members, which are main components of the front body of the vehicle body, play an important role for energy absorption in the event of a collision. At the time of an offset collision, the collision energy is absorbed by receiving the energy of the collision at the cross member and distributing the energy to both side members. For this reason, the cross member is coupled to the front end portions of both side members so as to be hung.
[0003]
A conventional cross member is formed by using a plurality of steel plates or the like, formed by sheet metal pressing, bending, or the like, and welded together.
[0004]
In this method, since a steel plate or the like is formed by sheet metal pressing, bending, or the like, the influence of springback cannot be avoided, and there is also an influence of distortion due to welding, resulting in variations in part accuracy. For this reason, there is a difficulty in assembling the cross member to the side member, and positioning is performed by various means when attaching peripheral parts.
[0005]
For example, as shown in Japanese Patent Application Laid-Open No. 7-304462, a method of positioning the mounting positions of peripheral parts with a compact configuration has been proposed.
[0006]
However, the cross member itself is manufactured by combining a plurality of steel plates in order to improve the rigidity. For this reason, the weight is increased and it is difficult to reduce the weight, and the number of processing steps is increased, which is a problem in terms of cost.
[0007]
Therefore, as a method for solving the above-mentioned problems, it is conceivable to use a cross member formed by hydroforming.
[0008]
Hydroform sets a steel pipe as a raw material between molds, fills the steel pipe with high-pressure liquid, and expands the steel pipe in the mold by the pressure of the liquid to form the mold shape. Is.
[0009]
In the above hydroforming molding method, since it was possible to integrally mold multiple parts, it was possible to reduce the number of parts, reduce welding, etc., and the steel pipe was work-hardened during pipe expansion, resulting in a thin wall. Since it is strong even in thickness, it is possible to achieve high rigidity, light weight, and low cost. Furthermore, since the spring back after molding hardly occurs, the accuracy of parts can be improved.
[0010]
Because of the above advantages, when a cross member formed of hydroform is used, many of the parts accuracy and problems during assembly can be solved.
[0011]
[Problems to be solved by the invention]
However, since a cross member or the like molded with hydroform has a closed cross-sectional shape, there is no flange for welding or the like. Therefore, a flange or the like for welding is reattached to join with a side member or the like. Therefore, the joining process procedure becomes complicated and the joining structure becomes complicated, and welding with the side members becomes difficult, and the joining strength may be insufficient in some cases.
[0012]
In view of the above problems, the present invention provides a compact vehicle body structure that can easily weld a cross member formed of hydroform to a side member.
[0013]
[Means for Solving the Problems]
In the vehicle body structure according to the present invention for solving the above-described problems, a cross member member integrally formed into a closed cross-sectional structure without a flange by a hydroform is hung between side member members on a side surface of a front end portion of the side member member. A flat end cap member that is coupled so as to close the front end portion of the side member member is extended on the same plane as the end cap member so as to be coupled to the outer peripheral surface of the cross member member. .
[0014]
A vehicle body structure according to the present invention that solves the above-described problems is obtained by connecting a cross member member formed of hydroform to a side surface of a front end portion of a side member member so as to span between the side member members. The end cap member attached so as to close the tip is extended to be coupled to the outer peripheral surface of the cross member member, and the extended portion of the end cap member, that is, the portion overlapping the cross member is further vertically moved. A pipe-shaped nut member is provided in the closed cross-sectional shape of the cross member covered with the extended portion of the end cap member so as to penetrate in the front-rear direction of the vehicle body, and the hook member is screwed from the outside. It is possible to combine.
[0015]
The vehicle body structure according to the present invention for solving the above-mentioned problems is characterized in that a bolt serving as a projecting portion is provided on an end cap member, and a reinforcement member is attached to the bolt and is hung between side member members. To do.
In addition, the vehicle body structure according to the present invention for solving the above-described problems has an octagonal closed cross section of the side member member, and the cross member member is connected to the side member member via a bracket having three contact surfaces. It is characterized by combining.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a schematic perspective view showing an example of a main frame of a vehicle body.
[0017]
As shown in FIG. 1, the main frame of the front part of the vehicle body is coupled to a pair of left and right sides on the both sides of the vehicle body, a side member 1 extending in the front-rear direction of the vehicle body, and the front ends of both side members 1. The cross member 2 is disposed so as to span between the side members 1, and the reinforcement 3 is disposed so as to span between the side members 1 similarly to the cross member 2 and plays a reinforcing role. ing. Furthermore, it has a support panel 4 provided so as to extend upward from both ends of the cross member 2, and an upper cross member 5 supported by the support panel 4 and serving as a frame above the front portion of the vehicle body. .
[0018]
The present invention is characterized in that the cross member 2 is formed by hydroforming and the cross member 2 can be easily coupled to the side member 1. In the drawings to be described later, the structure of the region A (the left front portion of the vehicle body) in FIG. 1 is shown enlarged for easy understanding. Since the structure of the right front part of the vehicle body is symmetrical with the left front part, the drawings and description are omitted.
[0019]
FIG. 2 is a perspective view of a vehicle body structure showing an example of an embodiment according to the present invention. Some components are shown broken away, and each component is shown separately so that the configuration can be seen.
[0020]
As shown in FIG. 2, the vehicle body structure according to the present invention includes a side member 1 extending in the front-rear direction of the vehicle on both sides of the front portion of the vehicle body and having a closed cross-sectional shape, and inner sides of the front end portions of both side members 1 A cross member 2 having a closed cross section joined so as to span between the side members 1 on the surface portion, and disposed between the side member 1 and the cross member 2 and welded to the side member 1 and the cross member 2 A bracket 6 for easily connecting the end member 7, an end cap 7 attached so as to close the tip of the side member 1, and a front surface of the end cap 7. It has a reinforcement (not shown) arranged so as to span.
[0021]
The side member 1 is formed by a U-shaped inner side member 1a and an outer side member 1b having flanges 1c and 1d at side ends in the longitudinal direction, and the flanges 1c and 1d are overlapped and welded to each other. Thus, a closed cross section is formed. Further, the end cap 7 is joined by welding using the flange 1e located at the front end.
[0022]
The cross member 2 is integrally formed into a pipe shape having a rectangular cross section by hydroforming, and is processed so that both end portions thereof face upward. A rectangular cutout 2a for securing a space for welding is provided on the inner surface side of both ends, and a rectangular opening 2h for inserting a welding gun on the front side. have. The notch 2a is not necessarily required as long as a space for welding can be secured.
[0023]
The bracket 6 is shaped so that the cross member 2 side wraps the cross member 2 in a U-shape, and the side member 1 side shape increases the contact area with the side member 1. These are formed on three surfaces so as to match the shape of the side surface of the side member 1 to be joined. Further, a similar opening 6 h is formed on the side surface of the bracket 6 in accordance with the rectangular opening 2 h of the cross member 2. The bracket 6 is used for reinforcing the coupling rigidity between the side member 1 and the cross member 2.
[0024]
The end cap 7 covers the end of the side member 1 and its flange 1e, and further has a size to cover the outer peripheral surface (front side) of the bracket 6 disposed on the side surface of the side member 1. . The end cap 7 is formed with two rectangular openings. One is an opening 7 h similar to the opening 2 h of the cross member 2 and the opening 6 h of the bracket 6, and the other is a side. This is an opening 7 a provided almost at the center of the end of the member 1. This opening 7a is also for the purpose of inserting a welding gun. Further, the end cap 7 is provided with four bolts 7b which are projected so as to penetrate from the back surface to the front surface, and these four bolts 7b are passed through a reinforcement which will be described later. Fix it. The end cap 7 has three functions of a lid of the side member 1, reinforcement of the bonding strength between the side member 1 and the cross member 2, and retention of the reinforcement by one part.
[0025]
The vehicle body structure is characterized in that the cross member 2 having no welding flange is coupled to the side surface of the front end portion of the side member 1. Furthermore, by using the bracket 6 and the end cap 7, it is possible to improve the bonding strength of the cross member 2 formed by hydroforming to the side member 1.
[0026]
FIG. 3 is a diagram illustrating a state in which the components illustrated in FIG. 2 are combined. 3A is a perspective view of the vehicle body structure, and FIG. 3B is a cross-sectional view taken along the line BB ′ in FIG. In FIG. 3 (a), some components are shown in a broken view, and the reinforcement attached to the end cap is also shown.
[0027]
As shown in FIG. 3A, the cross member 2 is coupled to the side surface of the side member 1 via a bracket 6, and an end cap 7 is attached to the tip of the side member 1 and the bracket 6 at the tip of the side member 1. It is couple | bonded so that the outer peripheral surface of may be covered. At this time, the cross member 2, the bracket 6 and the end cap 7 are joined so that the positions of the openings 2h, 6h and 7h are the same. FIG. 3B is a cross-sectional view taken along line BB ′ of FIG. 3A so that the configuration state can be understood.
[0028]
The reinforcement 3 is arranged on the front surface of the end cap 7 so as to span between the side members 1. Four through holes 3a are respectively provided at both end portions of the reinforcement 3, through which four bolts 7b of the end cap 7 are passed and fixed with nuts or the like. The cross-sectional shape of the reinforcement 3 may be a shape having two trapezoidal cross sections as shown in FIG.
[0029]
As a procedure for connecting the constituent members, for example, first, the bracket 6 and the cross member 2 are arranged on the side surface of the side member 1, and a spot welding gun is inserted into each of the opening 7a and the openings 2h, 6h, and 7h. Then, the side member 1-bracket 6-cross member 2 is welded. Next, the end cap 7 is disposed at the front end portion of the side member 1, and one of the spot welding guns is inserted into the opening 2 a, and the cross member 2-bracket 6-(side member 1-) between the end caps 7. Weld. Other welding points, for example, between the bracket 6 and the cross member 2 or between the side member 1 and the end cap 7 may be welded by an arbitrary procedure.
[0030]
FIG. 4 is a perspective view showing another example of the end cap shown in FIG. Some components are shown broken away.
[0031]
As shown in FIG. 4, the end cap 8 has an extended portion 8 c that extends further toward the cross member side of the end cap 8, and further extends upward. A bent portion 8d for connecting the upper cross member 5 is provided. Other configurations are the same as those of the end cap 7 described above. The extended portion 8c and the bent portion 8d correspond to the support panel 4 shown in FIG. 1, and the end cap 8 is a single component for reinforcing the coupling between the side member 1 lid and the side member 1-cross member 2, It plays the four roles of holding the reinforcement 3 and holding the upper cross member 5.
[0032]
FIG. 5 is a view showing still another example of the end cap shown in FIG. 5A is a perspective view of the end cap and the like, and FIG. 5B is a cross-sectional view taken along the line CC ′ of FIG. 5A. In FIG. 5 (a), for the sake of clarity, some of the components are shown in a cutaway manner, and some of the components are omitted.
[0033]
As shown in FIG. 5 (a), the end cap 9 has an extending portion 9e extending further downward at a portion extending to the cross member side of the end cap 9, and the central portion of the extending portion 9e. Is provided with a hole for penetrating a pipe nut 10 into which an eyebolt-type pulling hook or the like can be screwed from the outside. Other configurations are the same as those of the end cap 8 described above.
[0034]
As shown in FIG. 5B, the pipe-shaped pipe nut 10 passes through the closed cross-sectional shape of the end cap 9 and the cross member 2 and is provided in the front-rear direction of the vehicle body, for fixing the pipe nut 10. The welded portion 11 is coupled by gas welding or the like. Thus, the end cap 9 can serve not only to hold the reinforcement 3 but also to reinforce the pipe nut 10 to which the towing hook and the like are attached.
[0035]
With the above-described vehicle body structure, it is possible to use both a simple structure to attach peripheral parts and reinforce the joined parts, and to improve the appearance because the tow hook portion is hidden in the bumper.
[0036]
As described above, the present invention has been described with reference to the drawings based on the embodiments. However, the present invention is not limited to the shapes and the like of the respective components, and is suitable within the scope of the present invention. Etc. may be changed.
For example, in the example of the embodiment of the present invention shown in FIG. 2, the rectangular openings 2h, 6h, and 7h for inserting the welding gun are provided, but it seems that a space for welding can be secured. For example, the openings 2h, 6h, and 7h are not necessarily required, and the openings 2h, 6h, and 7h may be eliminated as shown in FIG.
Further, in another example of the end cap shown in FIG. 4, the opening 8 h may be eliminated if a space for welding can be secured, and still another example of the end cap shown in FIG. 5. However, it is needless to mention that the openings 2h and 9h may be eliminated if a space for welding can be secured (an example in which the opening 8h is eliminated in another example of the end cap, the end cap). An example in which the openings 2h and 9h are abolished in yet another example is not shown).
[0037]
【The invention's effect】
According to the first and fourth aspects of the invention, it is possible to provide a simple structure capable of firmly coupling the side member member and the cross member member while fully using the advantages of the cross member formed by hydroforming. .
[0038]
According to the invention which concerns on Claim 2, the attachment part of a strong tow hook with a simple structure can be provided.
[0039]
According to the invention which concerns on Claim 3, a space-saving structure can be provided, joining a reinforcement member firmly to a side member member.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing an example of a main frame of a vehicle body.
FIG. 2 is a perspective view of a vehicle body structure showing an example of an embodiment according to the present invention.
FIG. 3 is a diagram showing a state in which the component parts shown in FIG. 2 are combined. (A) is a perspective view, (b) is BB 'arrow sectional drawing of (a).
FIG. 4 is a perspective view showing another example of the end cap.
FIG. 5 is a view showing still another example of the end cap. (A) is a perspective view, (b) is CC 'arrow sectional drawing of (a).
FIG. 6 is a perspective view of a vehicle body structure showing another example of the embodiment according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Side member 2 Cross member 2h Opening part 3 Reinforce 6 Bracket 6h Opening part 7 End cap 7a Opening part 7b Bolt 7h Opening part 8 End cap 8a Opening part 8b Bolt 8c Extension part 8d Support part 8h Opening part 9 End cap 9a Opening portion 9b Bolt 9c Extension portion 9d Support portion 9e Extension portion 9h Opening portion 10 Pipe nut

Claims (4)

車体前部の両側部に前記車体の前後方向に延設され、閉断面形状を有するサイドメンバ部材と、前記サイドメンバ部材の先端部に結合され、前記サイドメンバ部材間に掛け渡すように配設されたクロスメンバ部材と、前記サイドメンバ部材の先端部を閉塞するように取付けられたエンドキャップ部材とを有する車体構造において、
前記クロスメンバ部材がハイドロフォームによりフランジのない閉断面構造に一体成形され、前記サイドメンバ部材の先端部側面に結合され、
前記エンドキャップ部材が平板で形成されると共に、前記クロスメンバ部材の車両前方側の面に結合する部分が前記エンドキャップ部材と同一平面上に延設されたことを特徴とする車体構造。
A side member member extending in the front-rear direction of the vehicle body on both sides of the vehicle body front portion, having a closed cross-sectional shape, and coupled to a tip end portion of the side member member and disposed so as to span between the side member members In the vehicle body structure having a cross member member made and an end cap member attached so as to close the tip of the side member member,
The cross member is formed integrally with the closed cross section with no flanges by hydroforming, is coupled to the distal end side of the side frame member,
A vehicle body structure, wherein the end cap member is formed of a flat plate, and a portion of the cross member member that is coupled to a front surface of the vehicle extends on the same plane as the end cap member .
車体前部の両側部に前記車体の前後方向に延設され、閉断面形状を有するサイドメンバ部材と、前記サイドメンバ部材の先端部に結合され、前記サイドメンバ部材間に掛け渡すように配設されたクロスメンバ部材と、前記サイドメンバ部材の先端部を閉塞するように取付けられたエンドキャップ部材とを有する車体構造において、
前記クロスメンバ部材がハイドロフォームにて成形され、前記サイドメンバ部材の先端部側面に結合され、
前記エンドキャップ部材が前記クロスメンバ部材の外周面に結合するように延設され、
前記エンドキャップ部材の延設された部位が、更に上下方向に延設され、前記延設される部位で覆われる前記クロスメンバの閉断面形状の内部に、外側からフック部材が螺合可能なパイプ状のナット部材が、上記車体の前後方向に設けられたことを特徴とする車体構造。
A side member member extending in the front-rear direction of the vehicle body on both sides of the vehicle body front portion, having a closed cross-sectional shape, and coupled to a tip end portion of the side member member and disposed so as to span between the side member members In the vehicle body structure having a cross member member made and an end cap member attached so as to close the tip of the side member member,
The cross member member is formed by hydroforming, and is coupled to the side surface of the tip portion of the side member member,
The end cap member extends so as to be coupled to the outer peripheral surface of the cross member member,
A pipe in which the hook member can be screwed from the outside into the closed cross-sectional shape of the cross member where the extended portion of the end cap member is further extended in the vertical direction and covered with the extended portion. A vehicle body structure, wherein a nut member is provided in a longitudinal direction of the vehicle body.
請求項1又は請求項2に記載の車体構造において、
前記エンドキャップ部材から突設された突設部と、
前記突設部に結合され、前記サイドメンバ部材間に掛け渡すように配設されたリンフォース部材と
を有したことを特徴とする車体構造。
In the vehicle body structure according to claim 1 or claim 2 ,
A projecting portion projecting from the end cap member;
A vehicle body structure comprising: a reinforcement member coupled to the projecting portion and arranged to span between the side member members.
請求項1乃至請求項3のいずれかに記載の車体構造において、The vehicle body structure according to any one of claims 1 to 3,
前記サイドメンバ部材の閉断面を八角形状にすると共に、While making the closed section of the side member member an octagonal shape,
前記サイドメンバ部材に対して、三面の接触面を有するブラケットを介して、前記クロスメンバ部材を結合することを特徴とする車体構造。A vehicle body structure characterized in that the cross member member is coupled to the side member member via a bracket having three contact surfaces.
JP2002107500A 2002-04-10 2002-04-10 Body structure Expired - Lifetime JP3814553B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002107500A JP3814553B2 (en) 2002-04-10 2002-04-10 Body structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002107500A JP3814553B2 (en) 2002-04-10 2002-04-10 Body structure

Publications (2)

Publication Number Publication Date
JP2003300482A JP2003300482A (en) 2003-10-21
JP3814553B2 true JP3814553B2 (en) 2006-08-30

Family

ID=29391508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002107500A Expired - Lifetime JP3814553B2 (en) 2002-04-10 2002-04-10 Body structure

Country Status (1)

Country Link
JP (1) JP3814553B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5001241B2 (en) * 2008-09-02 2012-08-15 本田技研工業株式会社 Body front structure

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2588709Y2 (en) * 1992-03-31 1999-01-13 日産自動車株式会社 Vehicle member connection structure
JP3293313B2 (en) * 1994-03-30 2002-06-17 日産自動車株式会社 Car body front structure
US5700033A (en) * 1996-05-31 1997-12-23 Dana Corporation Removable cross member for vehicle frame
KR100199772B1 (en) * 1996-10-18 1999-06-15 정몽규 Combining structur of front side member and radiator support lower member
JP4120065B2 (en) * 1998-11-11 2008-07-16 マツダ株式会社 Body structure at the front of the vehicle
JP3328237B2 (en) * 1999-08-27 2002-09-24 本田技研工業株式会社 Mounting structure of towing hook
JP4113659B2 (en) * 2000-07-21 2008-07-09 カルソニックカンセイ株式会社 Front end panel
JP4475776B2 (en) * 2000-08-28 2010-06-09 ユニプレス株式会社 Bumper stay in vehicle body

Also Published As

Publication number Publication date
JP2003300482A (en) 2003-10-21

Similar Documents

Publication Publication Date Title
US7441831B2 (en) Method of manufacturing a vehicle frame member with a subframe attachment mount
US6170906B1 (en) Framework structure of an automobile body
US7347491B2 (en) Rail to rocker joint using hydroformed members
US7661704B2 (en) Combination grab handle and airbag bracket
JP5238816B2 (en) Pickup truck carrier and manufacturing method thereof
US8657368B2 (en) Hydroformed side pillar to lower back joint structure
JPH02246877A (en) Front body structure for automobile
JPH05319302A (en) Body for automobile
US6338510B1 (en) Automotive bumper mount structure
US20100187800A1 (en) Reinforcement Member for Directly Jointed Tubular Components
JP2001063498A (en) Tow hook fitting structure
US20060012162A1 (en) Cross member for a motor vehicle
JP3814553B2 (en) Body structure
JPH09175180A (en) Impact beam supporting structure for automobile door
JPH04368289A (en) Bolt penetration part reinforcing part and vehicle body structure enclosing it
JP3814552B2 (en) Body structure
JP3545216B2 (en) Tailgate pillar lower body structure
JPH02293277A (en) Front body structure in automobile
JP3921409B2 (en) Body structure
JP2000219163A (en) Body structure of automobile
CN219524020U (en) Auxiliary frame before steel
CN110834672B (en) Rear fender inner plate structure of vehicle and vehicle
CN211107188U (en) Cross country vehicle goes up car and steps on thick stick structure and car
JPS5819981Y2 (en) cab structure
CA2570000C (en) Rear subframe attachment mount for hydroformed frame

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20040707

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050831

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20051018

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20051216

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20060516

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20060605

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 3814553

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090609

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100609

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100609

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110609

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110609

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120609

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120609

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130609

Year of fee payment: 7

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term