JP2001071945A - Front structure of automotive body - Google Patents
Front structure of automotive bodyInfo
- Publication number
- JP2001071945A JP2001071945A JP25467699A JP25467699A JP2001071945A JP 2001071945 A JP2001071945 A JP 2001071945A JP 25467699 A JP25467699 A JP 25467699A JP 25467699 A JP25467699 A JP 25467699A JP 2001071945 A JP2001071945 A JP 2001071945A
- Authority
- JP
- Japan
- Prior art keywords
- front side
- dash panel
- side member
- width direction
- vehicle width
- 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.)
- Granted
Links
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は自動車の車体前部構
造、とりわけ、フロントコンパートメントの左右両側部
に配設されて車体前部の前後方向骨格部材を構成するフ
ロントサイドメンバの配設構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body front structure, and more particularly to a front side member provided on both left and right sides of a front compartment to form a front-rear skeletal member of the vehicle body front.
【０００２】[0002]
【従来の技術】フロントコンパートメントの左右側壁を
構成するフードリッジパネルの下側部には、車体前部の
前後方向骨格部材を構成する閉断面構造のフロントサイ
ドメンバを配設し、該フロントサイドメンバの後端部を
車室とフロントコンパートメントとを隔成するダッシュ
パネルに結合して、車体前部の剛性を確保するようにし
ている（特開平１０−２６４８６２号公報参照）。2. Description of the Related Art A front side member having a closed cross-sectional structure constituting a front-rear skeletal member at the front of a vehicle body is disposed below a hood ridge panel forming left and right side walls of a front compartment. The rear end of the vehicle body is connected to a dash panel that separates the vehicle compartment and the front compartment, so that the rigidity of the front portion of the vehicle body is ensured (see Japanese Patent Application Laid-Open No. H10-264862).
【０００３】[0003]
【発明が解決しようとする課題】車両の前面衝突時の衝
突エネルギー吸収量はフロントコンパートメントの前後
方向の潰れストロークにほぼ比例し、該フロントコンパ
ートメントの潰れストロークを拡大するためには、フロ
ントサイドメンバを前端側から順序よく潰れ変形させる
必要がある。The amount of energy absorbed in a frontal collision of a vehicle is substantially proportional to the front-to-rear crushing stroke of the front compartment. To increase the crushing stroke of the front compartment, the front side member must be mounted. It is necessary to crush and deform in order from the front end side.
【０００４】このようにフロントサイドメンバを前端側
から順序よく潰れ変形させるためには、該フロントサイ
ドメンバの後半部の曲げ剛性，強度がフロントサイドメ
ンバの前半部よりも大きくなければならないし、また、
フロントサイドメンバとダッシュパネルとの結合剛性を
高めて、該フロントサイドメンバの圧潰反力を高く維持
できるように構成しなければならないが、これは結果的
にはフロントサイドメンバの潰れ変形をほぼその前半部
にとどめてしまうことになりかねない。[0004] In order to crush and deform the front side member in order from the front end side, the bending rigidity and strength of the rear half of the front side member must be greater than that of the front half of the front side member.
It is necessary to increase the coupling rigidity between the front side member and the dash panel so that the crush reaction force of the front side member can be maintained at a high level. It could be left in the first half.
【０００５】そこで、本発明はフロントサイドメンバの
後半部分の強度・剛性を確保することができ、かつ、車
両の前面衝突時にはフロントコンパートメントの前後方
向の潰れ変形ストロークを拡大できて、衝突エネルギー
吸収量を増大することができる自動車の車体前部構造を
提供するものである。Accordingly, the present invention can secure the strength and rigidity of the rear half of the front side member, and can also increase the front-to-rear crush deformation stroke of the front compartment at the time of a frontal collision of the vehicle, so that the collision energy absorption amount can be increased. It is intended to provide a vehicle body front structure capable of increasing the power consumption.
【０００６】[0006]
【課題を解決するための手段】請求項１の発明にあって
は、ダッシュパネルにより車室の前側に隔成されたフロ
ントコンパートメントの左右両側部に前後方向に延在す
るフロントサイドメンバを、左右メンバ間のスパンが前
端側からダッシュパネル側に至るに従って小さくなる平
面ハの字状に配置する一方、ダッシュパネルに、前方に
張り出し、かつ、前端側に対してダッシュパネル側の閉
断面積を拡大したメンバ連結部材を結合配置すると共に
その前端部に回動支点を設定し、該メンバ連結部材に前
記フロントサイドメンバの後端部を前記回動支点を中心
に水平方向に回動可能に抱持固定すると共に、ダッシュ
パネルにフロントサイドメンバの後端上縁に係合してフ
ロントサイドメンバ後端の上方への移動を拘束し、か
つ、水平方向の回転をガイドするストッパ縁を設けたこ
とを特徴としている。According to the first aspect of the present invention, a front side member extending in the front-rear direction is provided on both left and right sides of a front compartment separated by a dash panel on the front side of a vehicle compartment. While the span between the members is arranged in a flat C-shape that decreases from the front end side to the dash panel side, the dash panel extends forward and expands the closed cross-sectional area of the dash panel side from the front end side And a rotation fulcrum is set at the front end thereof, and the rear end of the front side member is held by the member connection member so as to be rotatable in the horizontal direction about the rotation fulcrum. In addition to fixing, the dash panel engages the upper edge of the rear end of the front side member to restrain upward movement of the rear end of the front side member, and rotates horizontally. It is characterized in that a guide stoppers edge.
【０００７】請求項２の発明にあっては、請求項１に記
載のメンバ連結部材の車幅方向内側の側壁に、回動支点
付近からダッシュパネル側に至るに従ってフロントサイ
ドメンバの車幅方向内側の側壁から離間する回動規制用
の斜面部を設けたことを特徴としている。According to the second aspect of the present invention, the inner side wall of the front side member in the vehicle width direction from the vicinity of the pivot point to the dash panel side is provided on the inner side wall of the member connecting member according to the first aspect. A slanted portion for regulating rotation, which is separated from the side wall of the slab.
【０００８】請求項３の発明にあっては、請求項１，２
に記載のメンバ連結部材の上壁の後側部に、フロントサ
イドメンバの車幅方向内側の上縁に係合する位置決め段
部を形成したことを特徴としている。[0008] In the invention of claim 3, claims 1 and 2
A positioning step is formed on the rear side of the upper wall of the member connecting member described in (1), the positioning step engaging with the upper edge of the front side member in the vehicle width direction.
【０００９】請求項４の発明にあっては、請求項１〜３
に記載の回動支点をメンバ連結部材に固設したサスペン
ションマウントボルトと同軸心上に設けると共に、フロ
ントサイドメンバを該回動支点の近傍でのみメンバ連結
部材と接合固定したことを特徴としている。According to the invention of claim 4, claims 1 to 3 are provided.
Is provided coaxially with the suspension mount bolt fixed to the member connecting member, and the front side member is joined and fixed to the member connecting member only near the turning fulcrum.
【００１０】請求項５の発明にあっては、請求項１〜４
に記載のメンバ連結部材の車幅方向内側の側壁に、回動
支点付近でフロントサイドメンバの車幅方向内側の側壁
に当接する凹設部を前後方向に形成したことを特徴とし
ている。In the invention of claim 5, claims 1 to 4 are provided.
A recessed portion is formed in the vehicle width direction inner side wall of the member connecting member described above in the front-rear direction so as to abut on the vehicle width direction inner side wall of the front side member near the rotation fulcrum.
【００１１】請求項６の発明にあっては、請求項１〜５
に記載のメンバ連結部材を、ダッシュパネルに結合され
て前方に張り出し、かつ、前端部下面にサスペンション
マウントボルトを固設したアーム部を備え、該アーム部
の前端部にフロントサイドメンバの略下半部に嵌合する
受容部と、回動支点を設けたロア部材と、上壁と車幅方
向内側の側壁とで断面逆Ｌ字状に形成されて、前端部を
フロントサイドメンバとの嵌合部とし、後端をダッシュ
パネルに接合すると共に前記側壁をロア部材に接合した
アッパ部材と、の２部品で構成したことを特徴としてい
る。According to the invention of claim 6, claims 1 to 5 are provided.
The arm connecting member is connected to the dash panel and protrudes forward, and the lower end of the front end has a suspension mount bolt fixed thereto, and the lower end of the front side member is provided at the front end of the arm. The upper end and the inner wall in the vehicle width direction are formed into an inverted L-shaped section, and the front end is engaged with the front side member. And an upper member having a rear end joined to the dash panel and the side wall joined to a lower member.
【００１２】請求項７の発明にあっては、請求項６に記
載のメンバ連結部材の少くともロア部材を軽量金属材料
で鋳造成形して、サスペンションマウントボルトを鋳ぐ
るみ固定し、該サスペンションマウントボルトの鋳ぐる
み固定部分を回動支点としたことを特徴としている。According to a seventh aspect of the present invention, at least the lower member of the member connecting member according to the sixth aspect is cast and formed from a lightweight metal material, and the suspension mount bolt is cast-fixed and fixed. Is characterized in that the cast-in fixed portion is used as a rotation fulcrum.
【００１３】請求項８の発明にあっては、請求項１〜７
に記載の回動支点を上向きに突出するロケートピンで構
成する一方、フロントサイドメンバの下壁には該ロケー
トピンが挿入係合するロケート孔を設けたことを特徴と
している。According to the invention of claim 8, claims 1 to 7 are provided.
The rotation fulcrum described in (1) is constituted by a locating pin protruding upward, while a locating hole into which the locating pin is inserted and engaged is provided on the lower wall of the front side member.
【００１４】請求項９の発明にあっては、請求項１〜８
に記載のダッシュパネルを軽量金属材料で閉断面構造に
車幅方向に押出成形する一方、フロントサイドメンバの
少くとも後側部を軽量金属材料で一定の閉断面形状に押
出成形したことを特徴としている。According to the ninth aspect of the present invention, the first to eighth aspects are provided.
While the dash panel described in (1) is extruded in the vehicle width direction into a closed-section structure with a lightweight metal material, at least the rear side of the front side member is extruded into a constant closed-section shape with a lightweight metal material. I have.
【００１５】請求項１０の発明にあっては、請求項１〜
９に記載のフロントサイドメンバをジョイント部材で連
結したフロントメンバとリヤメンバとで構成し、少くと
もフロントメンバを断面円形に形成して左右のメンバ前
端部間をクロスメンバで結合したことを特徴としてい
る。In the tenth aspect of the present invention,
9. The front side member described in 9 is composed of a front member and a rear member connected by a joint member, and at least the front member is formed to have a circular cross section, and the front ends of the left and right members are joined by a cross member. .
【００１６】請求項１１の発明にあっては、請求項１０
に記載のクロスメンバのフロントメンバとの結合部分
に、フロントバンパーのバンパーステイをフロントメン
バと同軸線上に支持するステイ連結部を設けたことを特
徴としている。According to the eleventh aspect of the present invention, in the tenth aspect,
The cross member described in (1) above is provided with a stay connecting portion for supporting the bumper stay of the front bumper coaxially with the front member at the joint portion with the front member.
【００１７】請求項１２の発明にあっては、請求項１１
に記載のバンパーステイをステイ連結部に水平方向に回
動可能に連結したことを特徴としている。According to the twelfth aspect of the present invention, the eleventh aspect provides
Is connected to the stay connecting portion so as to be rotatable in the horizontal direction.
【００１８】[0018]
【発明の効果】請求項１に記載の発明によれば、フロン
トサイドメンバをダッシュパネルに結合したメンバ連結
部材は、その前端側に対してダッシュパネル側の閉断面
積を拡大してフロントサイドメンバ後端部のダッシュパ
ネルとの結合部分の剛性を高めてあり、しかも、左右の
フロントサイドメンバを平面ハの字状に配置して回動支
点を中心に水平方向に回動可能としてあるから、車両の
前面衝突時にフロントサイドメンバの圧潰反力を高く維
持させて前半部分を前端側から順序よく潰れ変形させる
と共に、フロントサイドメンバを回動支点を中心にハの
字が開く方向に回転させて、フロントコンパートメント
の潰れスペースを増大させることができる。According to the first aspect of the present invention, the member connecting member in which the front side member is connected to the dash panel has a front-end member whose closed cross-sectional area on the dash panel side is enlarged with respect to the front end side. Since the rigidity of the connecting portion with the dash panel at the rear end is increased, and the left and right front side members are arranged in a plane C shape so that they can be turned horizontally around the turning fulcrum, At the time of a frontal collision of the vehicle, the crush reaction force of the front side member is maintained high, and the front half is crushed and deformed in order from the front end side, and the front side member is rotated around the pivot point in the direction in which the C-shape opens, The crushing space of the front compartment can be increased.
【００１９】従って、フロントサイドメンバの前半部分
を完全に圧潰させたのちさらに該フロントコンパートメ
ントの潰れ変形を継続させて潰れ変形ストロークを拡大
できるため、衝突エネルギー吸収量を格段に増大するこ
とができる。Therefore, after the front half of the front side member is completely crushed, the crush deformation of the front compartment can be continued and the crush deformation stroke can be expanded, so that the collision energy absorption amount can be remarkably increased.
【００２０】しかも、前記フロントサイドメンバの回転
時にはダッシュパネルのストッパ縁によって、該フロン
トサイドメンバの後端縁の上方への移動を拘束すると共
に、水平方向の回転をガイドするため、フロントサイド
メンバの回転軌跡を限定して回転モードを安定させるこ
とができて、フロントコンパートメントの潰れスペース
の増大化を極めて安定的に実現することができる。In addition, when the front side member is rotated, the upward movement of the rear end edge of the front side member is restrained by the stopper edge of the dash panel and the rotation of the front side member is guided. The rotation mode can be stabilized by limiting the rotation trajectory, and the collapsed space of the front compartment can be increased extremely stably.
【００２１】請求項２に記載の発明によれば、請求項１
の発明の効果に加えて、フロントサイドメンバが水平方
向に回転した際に、メンバ連結部材の車幅方向内側の側
壁に設けた斜面部でこのフロントサイドメンバの回転を
規制して、該フロントサイドメンバのハの字状の開き角
度を所要角度に維持することができ、従って、フロント
サイドメンバの過度の開き方向の回転による圧潰反力特
性の低下を回避することができる。According to the second aspect of the present invention, the first aspect is provided.
In addition to the effect of the invention, when the front side member rotates in the horizontal direction, the rotation of the front side member is regulated by the slope provided on the inner side wall in the vehicle width direction of the member connecting member, and It is possible to maintain the C-shaped opening angle of the member at the required angle, and therefore it is possible to avoid a reduction in the crush reaction force characteristic due to the excessive opening direction rotation of the front side member.
【００２２】請求項３に記載の発明によれば、請求項
１，２の発明の効果に加えて、フロントサイドメンバは
その後端部の車幅方向内側の上縁がメンバ連結部材の上
壁の位置決め段部に係合して、所定の平面ハの字状の開
き角度に適正に組付けることができるため、設計通りの
フロントサイドメンバの潰れ特性を得ることができる。According to the third aspect of the present invention, in addition to the effects of the first and second aspects of the present invention, the front side member has an upper edge in the vehicle width direction at the rear end of the upper wall of the member connecting member. By engaging with the positioning step, it is possible to appropriately assemble the opening angle in the shape of a predetermined flat C-shape, so that the crushing characteristic of the front side member as designed can be obtained.
【００２３】請求項４に記載の発明によれば、請求項１
〜３の発明の効果に加えて、回動支点をサスペンション
マウントボルトの同軸心上に設けてあるため、該回動支
点を中心とするフロントサイドメンバの回転支持に、サ
スペンションメンバ自体の剛性・強度を寄与させること
ができ、該回動支点の支持剛性を高めてフロントサイド
メンバの回転を安定させることができる。According to the invention described in claim 4, according to claim 1,
In addition to the effects of the inventions of (1) to (3), since the rotation fulcrum is provided on the coaxial center of the suspension mount bolt, the rigidity and strength of the suspension member itself are supported for the rotation support of the front side member about the rotation fulcrum. And the supporting rigidity of the pivot point can be increased to stabilize the rotation of the front side member.
【００２４】また、フロントサイドメンバはこの回動支
点の近傍でのみメンバ連結部材に接合して、回動支点か
ら後方の部分は該メンバ連結部材と非接合状態としてあ
るため、前面衝突時にフロントサイドメンバを確実に回
転作動させることができる。Further, the front side member is joined to the member connecting member only in the vicinity of the turning fulcrum, and the portion behind the turning fulcrum is not joined to the member connecting member. The member can be reliably rotated.
【００２５】請求項５に記載の発明によれば、請求項１
〜４の発明の効果に加えて、回動支点付近でフロントサ
イドメンバの車幅方向内側の側壁にメンバ連結部材の車
幅方向内側の側壁に設けた凹設部が当接して、該回動支
点付近の断面係数を大きくできることに加えて、メンバ
連結部材の側壁の面剛性を高められるため、フロントサ
イドメンバの左右方向の支持剛性・強度を高めることが
できる。According to the invention described in claim 5, according to claim 1,
In addition to the effects of the inventions of (1) to (4), a concave portion provided on the inner side wall in the vehicle width direction of the member connecting member abuts on the inner side wall in the vehicle width direction of the front side member near the rotation fulcrum. In addition to increasing the section modulus near the fulcrum, the surface rigidity of the side wall of the member connecting member can be increased, so that the lateral side support rigidity and strength of the front side member can be increased.
【００２６】請求項６に記載の発明によれば、請求項１
〜５の発明の効果に加えて、フロントサイドメンバの組
付けに際しては、該フロントサイドメンバの後端部をメ
ンバ連結部材のロア部材の受容部上に嵌合，載置し、そ
の上方もしくは側方よりアッパ部材を嵌合することによ
って該メンバ連結部材に容易に組付けることができて、
ロボットによる自動組付けが可能となり、また、これら
ロア部材，アッパ部材との嵌合によってフロントサイド
メンバの位置決めと仮保持を行えるので、専用の車体組
付治具設備が不要となり、大幅なコストダウンを実施す
ることができる。According to the invention of claim 6, according to claim 1,
In addition to the effects of the fifth to fifth aspects, when assembling the front side member, the rear end of the front side member is fitted and placed on the receiving portion of the lower member of the member connecting member, and the upper side or the side thereof is placed. By fitting the upper member from the side, it can be easily assembled to the member connecting member,
Automatic assembling by a robot is possible, and positioning and temporary holding of the front side member can be performed by fitting these lower and upper members, eliminating the need for dedicated body assembly jig equipment, resulting in significant cost reduction. Can be implemented.
【００２７】請求項７に記載の発明によれば、請求項６
の発明の効果に加えて、メンバ連結部材のロア部材を鋳
造成形してサスペンションマウントボルトを鋳ぐるみ固
定し、この鋳ぐるみ固定部分を回動支点としてあるた
め、これらサスペンションマウントボルトおよび回動支
点を位置決め治具等を用いて精度出しを行うことなく容
易に設定することができる。According to the invention of claim 7, according to claim 6,
In addition to the effects of the invention, the lower member of the member connecting member is cast-molded and the suspension mount bolt is cast-molded and fixed, and this suspension-molded fixing portion is used as a rotation fulcrum. It can be easily set without performing accuracy setting using a positioning jig or the like.
【００２８】請求項８に記載の発明によれば、請求項１
〜７の発明の効果に加えて、回動支点をロケートピンで
構成し、フロントサイドメンバの下壁にはロケート孔を
設けてあるので、該フロントサイドメンバの組付時には
これらロケートピンとロケート孔とを挿入，係合するこ
とによってフロントサイドメンバの前後方向の位置決め
を行え、従って、組付作業性をより一層向上することが
できる。According to the invention described in claim 8, according to claim 1,
In addition to the effects of the present invention, the rotation fulcrum is constituted by a locate pin, and a locate hole is provided in the lower wall of the front side member. When the front side member is assembled, the locate pin and the locate hole are connected. By inserting and engaging, the front side member can be positioned in the front-rear direction, so that the assembling workability can be further improved.
【００２９】請求項９に記載の発明によれば、請求項１
〜８の発明の効果に加えて、フロントサイドメンバの少
くとも後半部は一定の閉断面に押出成形してあるため曲
げ剛性が高く、また、車両の前面衝突時に該フロントサ
イドメンバに作用する上下方向の曲げモーメントに対し
て、フロントサイドメンバの押出方向と直交する方向に
押出成形されて曲げ剛性の高いダッシュパネルの曲げ方
向で強度的に有利に受けて該上下曲げモーメントを吸収
することができ、従って、フロントサイドメンバの折れ
曲がりや、ダッシュパネルとの結合部分での折れ曲がり
を生じることなく該フロントサイドメンバの前半部分の
潰れ変形を適正に行わせることができる。According to the ninth aspect of the present invention, the first aspect is provided.
In addition to the effects of the present invention, at least the rear half of the front side member has a high bending rigidity because it is extruded into a fixed closed cross section, and the upper and lower portions acting on the front side member at the time of a frontal collision of the vehicle. With respect to the bending moment in the direction, it is extruded in a direction orthogonal to the extrusion direction of the front side member and can receive the vertical bending moment by receiving strength advantageously in the bending direction of the dash panel having high bending rigidity. Therefore, the front half of the front side member can be properly crushed and deformed without bending of the front side member or bending at a portion connected to the dash panel.
【００３０】請求項１０に記載の発明によれば、請求項
１〜９の発明の効果に加えて、フロントサイドメンバの
フロントメンバを、単位ねじり角に対して大きなねじり
トルクを吸収でき、かつ、ねじりによる断面変形が生じ
にくい円形断面に形成してあるから、車両の前面衝突時
に左右のフロントサイドメンバ前端部間のスパンが拡大
する際に、フロントメンバにねじり力が作用しても該フ
ロントメンバを局部的な壁面座屈による折れ曲がりを生
じさせることなく適正に潰れ変形させることができる。According to the tenth aspect, in addition to the effects of the first to ninth aspects, the front member of the front side member can absorb a large torsion torque with respect to a unit torsion angle, and The front member is formed into a circular cross-section that is unlikely to be deformed by torsion. Can be properly crushed and deformed without causing bending due to local wall buckling.
【００３１】請求項１１に記載の発明によれば、請求項
１０の発明の効果に加えて、フロントバンパーのバンパ
ーステイをステイ連結部でフロントメンバと同軸線上に
支持してあるため、衝突入力をフロントメンバの中心軸
に適正に作用させることができる。According to the eleventh aspect of the present invention, in addition to the effect of the tenth aspect, since the bumper stay of the front bumper is supported coaxially with the front member at the stay connecting portion, the collision input can be reduced. It is possible to appropriately act on the central axis of the member.
【００３２】請求項１２に記載の発明によれば、請求項
１１の発明の効果に加えて、バンパーステイはステイ連
結部に水平方向に回動可能としてあるから、車両の前面
衝突時に左右のフロントサイドメンバ前端部間のスパン
が拡大する際のクロスメンバ側部のねじれ回転を規制す
ることがなく、前記スパン拡大作用を適正に行わせるこ
とができる。According to the twelfth aspect of the present invention, in addition to the effect of the eleventh aspect, the bumper stay is rotatable in the horizontal direction at the stay connecting portion. The span expansion operation can be performed properly without restricting the twist rotation of the cross member side portion when the span between the front end portions of the side members increases.
【００３３】また、フロントバンパーを衝突方向に向け
ることができて、フロントサイドメンバの軸線方向に適
正に衝突入力を作用させることができる。Further, the front bumper can be directed in the collision direction, and the collision input can be appropriately applied in the axial direction of the front side member.
【００３４】[0034]
【発明の実施の形態】以下、本発明の一実施形態を図面
と共に詳述する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.
【００３５】図１，２において、１は車室Ｒの前方に図
外のエンジン等のパワーユニットを搭載するフロントコ
ンパートメントＦ・Ｃを隔成するダッシュパネルを示
し、該ダッシュパネル１はアルミ合金等の軽量金属材料
により閉断面構造に車幅方向に押出成形してある。In FIGS. 1 and 2, reference numeral 1 denotes a dash panel which separates a front compartment FC for mounting a power unit such as an engine (not shown) in front of a cabin R, and the dash panel 1 is made of aluminum alloy or the like. It is extruded in the vehicle width direction into a closed cross section structure using a lightweight metal material.
【００３６】フロントコンパートメントＦ・Ｃの左右側
部を隔成するフードリッジパネル２（図７〜９参照）の
下端部に前後方向に沿って接合配置した左右のフロント
サイドメンバ４は、左右メンバ間のスパンが前端側から
ダッシュパネル１側に至るに従って小さくなる平面ハの
字状に配置してあり、それらの後端部はメンバ連結部材
３を介して前記ダッシュパネル１に結合してある。The left and right front side members 4 joined to the lower end of the hood ridge panel 2 (see FIGS. 7 to 9) for separating the left and right sides of the front compartments F and C along the front-rear direction. Are arranged in a flat C-shape where the span becomes smaller from the front end side to the dash panel 1 side, and their rear ends are connected to the dash panel 1 via a member connecting member 3.
【００３７】メンバ連結部材３は前端側に対してダッシ
ュパネル１側の閉断面積を拡大してあって、該メンバ連
結部材３をロア部材３Ａとアッパ部材３Ｂの２部品で構
成してあり、これらは何れも前述と同様の軽量金属材料
により鋳造成形してある。The member connecting member 3 has an enlarged closed sectional area on the dash panel 1 side with respect to the front end side, and the member connecting member 3 is composed of two parts, a lower member 3A and an upper member 3B. Each of them is cast and formed from the same lightweight metal material as described above.
【００３８】ロア部材３Ａは１つのベース部５を共有し
て左右一体に成形してあり、ベース部５の前縁フランジ
５ａの部分でダッシュパネル１に接合すると共に、該ベ
ース部５の左右両側部に形成した位置決め部６にダッシ
ュパネル１の左右両端部を嵌合係着した上で接合してあ
る。The lower member 3A is formed integrally with the dash panel 1 at the front edge flange 5a of the base portion 5 by sharing one base portion 5, and is also formed on the left and right sides of the base portion 5. The left and right ends of the dash panel 1 are fitted to and engaged with the positioning portion 6 formed in the portion.
【００３９】ロア部材３Ａはダッシュパネル１の前方に
張り出すアーム部７を一体成形してあり、該アーム部７
とアッパ部材３Ｂとで閉断面を構成している。The lower member 3A is integrally formed with an arm 7 projecting forward of the dash panel 1.
And the upper member 3B constitute a closed cross section.
【００４０】アーム部７の前端部にはフロントサイドメ
ンバ４の後端部の略下半部の外形形状に見合った断面形
状の受容部７ａを形成してあり、該受容部７ａにフロン
トサイドメンバ４の後端部の略下半部を嵌合，定置する
ようにしている。The front end of the arm 7 is formed with a receiving portion 7a having a sectional shape corresponding to the outer shape of a substantially lower half of the rear end of the front side member 4. The receiving portion 7a has a front side member. A substantially lower half of the rear end portion 4 is fitted and fixed.
【００４１】また、アーム部７の前記受容部７ａのやや
後方部位とベース部５には、下向きに突出するサスペン
ションマウントボルト８，９を鋳ぐるみ固定してあり、
これらサスペンションマウントボルト８，９に跨って図
５に示すようにサスペンションメンバ１０をそれぞれナ
ット８ａ，９ａにより締結固定するようにしてある。Further, suspension mount bolts 8 and 9 projecting downward are cast-molded and fixed to the base portion 5 slightly behind the receiving portion 7a of the arm portion 7, and
As shown in FIG. 5, the suspension member 10 is fastened and fixed to the suspension mount bolts 8 and 9 by nuts 8a and 9a, respectively.
【００４２】後側のサスペンションマウントボルト９の
鋳ぐるみ固定部には、同軸心上にロケートピン１１を上
向きに突出成形してあり、該ロケートピン１１を図５に
示すようにダッシュパネル１の外壁に設けたロケート孔
１２に挿入係合して、その上端に設けたねじ部１１ａに
リテーナプレート１３を介して内壁上にナット１４によ
り締結固定するようにしている。A locate pin 11 is formed on the outer wall of the dash panel 1 on the outer wall of the dash panel 1 as shown in FIG. The hole 14 is inserted into and engaged with the locate hole 12, and is fastened and fixed to a threaded portion 11 a provided at the upper end thereof via a retainer plate 13 on an inner wall with a nut 14.
【００４３】前側のサスペンションマウントボルト８の
鋳ぐるみ固定部には図３〜５および図９，１０に示すよ
うに、同軸心上に回動支点としてのロケートピン１５を
上向きに突出成形してあり、該ロケートピン１５をフロ
ントサイドメンバ４の後端部の下壁に設けたロケート孔
１６に挿入係合して、フロントサイドメンバ４を該ロケ
ートピン１５を回動中心として水平方向に回動可能とし
てある。As shown in FIGS. 3 to 5 and FIGS. 9 and 10, a locating pin 15 as a rotation fulcrum is formed to protrude upward from the cast-in fixing portion of the front suspension mount bolt 8, as shown in FIGS. The locating pin 15 is inserted into and engaged with a locating hole 16 provided in the lower wall of the rear end of the front side member 4 so that the front side member 4 can be turned in the horizontal direction about the locating pin 15 as a center of rotation.
【００４４】メンバ連結部材３のアッパ部材３Ｂは上壁
３Ｂ1 と車幅方向内側の側壁３Ｂ2とで断面逆Ｌ字状に
形成してあり、前端部をフロントサイドメンバ４の上壁
と車幅方向内側の側壁とに当接係合する嵌合部１７とし
てある。The upper member 3B of the member connecting member 3 Yes formed in sectional inverted L-shape with an upper wall 3B 1 in the vehicle width direction inner side of the side wall 3B 2, the upper wall and car front side member 4 and the front end The fitting portion 17 is in contact with the side wall on the inner side in the width direction.
【００４５】このアッパ部材３Ｂは後端縁に形成したフ
ランジ１８の部分でダッシュパネル１に接合固定し、そ
して、車幅方向内側の側壁３Ｂ2 の下縁部を前記アーム
部７の車幅方向内側の側壁上縁部に重合して接合するこ
とによりメンバ連結部材３の側壁１９を構成するが、該
側壁１９には前記ロケートピン１５で構成する回動支点
付近からダッシュパネル１側に至るに従ってフロントサ
イドメンバ４の車幅方向内側の側壁から離間する回動規
制用の斜面部１９ａを形成してある。[0045] The upper member 3B is joined and fixed to the dash panel 1 at the portion of the flange 18 formed at the rear end edge, and the vehicle width direction of the arm portions 7 and lower edge of the side wall 3B 2 in the vehicle width direction inner side The side wall 19 of the member connecting member 3 is formed by being overlapped and joined to the upper edge of the inner side wall, and the side wall 19 has a front surface from the vicinity of the rotation fulcrum constituted by the locate pin 15 to the dash panel 1 side. An inclined surface portion 19a for rotation control is formed to be separated from the inner side wall of the side member 4 in the vehicle width direction.
【００４６】アッパ部材３Ｂの上壁３Ｂ1 の車幅方向外
側の側縁には舌片２０を延設してあり、該舌片２０を図
８に示すようにフードリッジパネル２に接合したクロー
ジングプレート２ａの棚部上に接合固定してある。[0046] The vehicle width direction outer side edges of the wall 3B 1 on the upper member 3B Yes to extend the tongue 20, closing bonding the tongue piece 20 to the hood ridge panel 2 as shown in FIG. 8 It is joined and fixed on the shelf of the plate 2a.
【００４７】また、この上壁３Ｂ1 の後側部にはフロン
トサイドメンバ４の車幅方向内側の上縁に係合する位置
決め段部２１を形成してある。Further, the upper on the side after the wall 3B 1 is formed with positioning step 21 that engages the vehicle width direction inner side of the upper edge of the front side member 4.
【００４８】この位置決め段部２１は上壁３Ｂ1 を部分
的に凹設して形成しているが、下向きに突出するリブ突
起で構成するようにしてもよい。[0048] This positioning step 21 is formed by recessed upper wall 3B 1 partially, may be configured with ribs projection projecting downward.
【００４９】また、アッパ部材３Ｂの側壁３Ｂ2 には前
記回動支点であるロケートピン１５付近でフロントサイ
ドメンバ４の車幅方向内側の側壁に当接する凹設部２２
を前後方向に形成してある。A recessed portion 22 is provided on the side wall 3B 2 of the upper member 3B near the locate pin 15, which is the pivot point, to abut on the inner side wall of the front side member 4 in the vehicle width direction.
Are formed in the front-rear direction.
【００５０】フロントサイドメンバ４は前述のようにロ
ケートピン１５とロケート孔１６とを係合させ、かつ、
後端をダッシュパネル１に突き当ててメンバ連結部材３
に水平方向に回動可能に抱持されるが、該フロントサイ
ドメンバ４は前記回動支点であるロケートピン１５の近
傍でのみメンバ連結部材３と溶接により接合固定され、
該回動支点１５の後方からダッシュパネル１に至る部分
間ではメンバ連結部材３と非接合状態にしてある。The front side member 4 engages the locate pin 15 and the locate hole 16 as described above, and
The rear end abuts against the dash panel 1 and the member connecting member 3
The front side member 4 is fixed by welding to the member connecting member 3 only in the vicinity of the locating pin 15 which is the rotation fulcrum.
The portion from the rear of the rotation fulcrum 15 to the dash panel 1 is not joined to the member connecting member 3.
【００５１】一方、ダッシュパネル１の前面にはフロン
トサイドメンバ４の後端上縁に係合してフロントサイド
メンバ４の後端の上方への移動を拘束し、かつ、水平方
向の回転をガイドするストッパ縁２３を押出方向に形成
してある。On the other hand, the front surface of the dash panel 1 is engaged with the upper edge of the rear end of the front side member 4 to restrain upward movement of the rear end of the front side member 4 and guide horizontal rotation. The stopper edge 23 is formed in the pushing direction.
【００５２】フロントサイドメンバ４もアルミ合金等の
軽量金属材料により一定の閉断面形状に押出成形される
が、本実施形態では円形断面のフロントメンバ４Ａと多
角形断面のリヤメンバ４Ｂとに分割し、これら両者をジ
ョイント部材２４で連結して構成している。The front side member 4 is also extruded from a lightweight metal material such as an aluminum alloy into a fixed closed cross section. In the present embodiment, the front side member 4 is divided into a front member 4A having a circular cross section and a rear member 4B having a polygonal cross section. Both are connected by a joint member 24 and configured.
【００５３】左右のフロントメンバ４Ａの前端部間は図
１１，１２にも示すようにクロスメンバ２５で結合され
るが、このクロスメンバ２５はその両側端部に連結メン
バ２６を接続固定してあり、該連結メンバ２６に設けた
ソケット部２７にフロントメンバ４Ａの前端を嵌合して
接続固定するようにしている。The front end portions of the left and right front members 4A are joined by cross members 25 as shown in FIGS. 11 and 12, and the cross members 25 have connection members 26 fixedly connected to both end portions thereof. The front end of the front member 4A is fitted to a socket 27 provided on the connecting member 26 to be connected and fixed.
【００５４】連結メンバ２６のソケット部２７の前側に
はステイ連結部２８を設けてあり、該ステイ連結部２８
にフロントバンパー２９（図１，１１ではバンパーアー
マチュアのみを示している）のバンパーステイ３０の後
端部を挿入してフロントメンバ４Ａと同軸線上に支持し
て、図外のピン部材により水平方向に回動可能に連結し
てある。A stay connecting portion 28 is provided on the front side of the socket portion 27 of the connecting member 26.
The rear end of the bumper stay 30 of the front bumper 29 (only the bumper armature is shown in FIGS. 1 and 11) is inserted into the front bumper 29 and supported on the same axis as the front member 4A. Movably connected.
【００５５】図１中、３１はフロアパネルを示し、該フ
ロアパネル３１も前述と同様の軽量金属材料により閉断
面構造に前後方向に押出成形してある。In FIG. 1, reference numeral 31 denotes a floor panel. The floor panel 31 is also extruded in the front-rear direction into a closed cross-sectional structure using the same lightweight metal material as described above.
【００５６】以上の実施形態の構造によれば、フロント
サイドメンバ４をダッシュパネル１に結合したメンバ連
結部材３は、その前端側に対してダッシュパネル１側の
閉断面積を拡大してフロントサイドメンバ４の後端部の
ダッシュパネル１との係合部分の剛性を高めてあり、し
かも、左右のフロントサイドメンバ４を平面ハの字状に
配置して回動支点であるロケートピン１５を中心に水平
方向に回動可能としてあるから、車両の前面衝突時にフ
ロントサイドメンバ４の圧潰反力を高く維持させて前半
部分を前端側から順序よく潰れ変形させると共に、図６
の仮想線で示すようにフロントサイドメンバ４をロケー
トピン１５を中心にハの字が開く方向に回転させて、フ
ロントコンパートメントＦ・Ｃの潰れスペースを増大さ
せることができる。According to the structure of the above-described embodiment, the member connecting member 3 in which the front side member 4 is connected to the dash panel 1 is enlarged in the closed sectional area on the dash panel 1 side with respect to the front end side. The rigidity of the engaging portion of the rear end of the member 4 with the dash panel 1 is increased, and the left and right front side members 4 are arranged in a C-shape on a plane so as to center on the locating pin 15 which is a pivot point. Since it is rotatable in the horizontal direction, the crush reaction force of the front side member 4 is kept high during a frontal collision of the vehicle, and the front half is crushed and deformed in order from the front end side.
By rotating the front side member 4 about the locating pin 15 in the direction in which the C-shape opens, as shown by the phantom line, the collapsed space of the front compartments FC can be increased.
【００５７】従って、フロントサイドメンバ４の前半部
分を完全に圧潰させたのちさらに該フロントコンパート
メントＦ・Ｃの潰れ変形を継続させて潰れ変形ストロー
クを拡大できるため、衝突エネルギー吸収量を格段に増
大することができる。Therefore, after the front half of the front side member 4 is completely crushed, the crushing deformation of the front compartments FC can be continued and the crushing deformation stroke can be expanded, so that the amount of collision energy absorption is significantly increased. be able to.
【００５８】しかも、前記フロントサイドメンバ４の回
転時にはダッシュパネル１のストッパ縁２３によって、
該フロントサイドメンバ４の後端縁の上方への移動を拘
束すると共に、水平方向の回転をガイドするため、フロ
ントサイドメンバ４の回転軌跡を限定して回転モードを
安定させることができて、フロントコンパートメントＦ
・Ｃの潰れスペースの増大化を極めて安定的に実現する
ことができる。In addition, when the front side member 4 rotates, the stopper edge 23 of the dash panel 1
In order to restrict the upward movement of the rear edge of the front side member 4 and guide the horizontal rotation, the rotation mode of the front side member 4 can be limited to stabilize the rotation mode, Compartment F
The space for crushing C can be increased extremely stably.
【００５９】ここで、前記フロントサイドメンバ４の回
転時には、メンバ連結部材３の車幅方向内側の側壁１９
に設けた斜面部１９ａでこのフロントサイドメンバ４の
回転を規制して、該フロントサイドメンバ４のハの字状
の開き角度を所要角度に維持することができるため、フ
ロントサイドメンバ４の過度の開き方向の回転による圧
潰反力特性の低下を回避することができる。When the front side member 4 rotates, the inner side wall 19 of the member connecting member 3 in the vehicle width direction is used.
The rotation of the front side member 4 can be regulated by the inclined portion 19a provided at the front side, and the angle of opening of the front side member 4 can be maintained at a required angle. A reduction in the crush reaction force characteristic due to the rotation in the opening direction can be avoided.
【００６０】この車両の前面衝突時にはフロントサイド
メンバ４に上下方向の曲げモーメントが作用するが、該
フロントサイドメンバ４のリヤメンバ４Ｂを多角形の一
定の閉断面に押出成形してあるため曲げ剛性が高く、ま
た、ダッシュパネル１は閉断面構造に車幅方向に押出し
成形してフロントサイドメンバ４の軸方向入力に対する
曲げ剛性を高めてあって、このフロントサイドメンバ４
に作用する上下方向の曲げモーメントに対してダッシュ
パネル１の曲げ方向で強度的に有利に受けて該上下曲げ
モーメントを吸収することができ、従って、リヤメンバ
４Ｂの折れ曲がりや、ダッシュパネル１との結合部分で
の折れ曲がりを生じることがなく、フロントメンバ４Ａ
を有効に潰れ変形させることができる。When a frontal collision of the vehicle occurs, a vertical bending moment acts on the front side member 4. However, since the rear member 4B of the front side member 4 is extruded into a polygonal closed section, the bending rigidity is reduced. The dash panel 1 is extruded in the vehicle width direction into a closed cross-section structure to increase the bending rigidity of the front side member 4 with respect to the input in the axial direction.
Can be absorbed in the bending direction of the dash panel 1 in terms of strength in the bending direction of the dash panel 1 and can absorb the vertical bending moment. Therefore, the bending of the rear member 4B and the coupling with the dash panel 1 can be achieved. The front member 4A does not bend at the portion.
Can be effectively crushed and deformed.
【００６１】左右のフロントメンバ４Ａの前端側はクロ
スメンバ２５を結合して連結してあるため、これらメン
バ前端部間のスパンが拡大する際には図１２の仮想線で
示すように連結メンバ２６がねじれ回転し、従って、フ
ロントメンバ４Ａにねじりトルクが発生するが、このフ
ロントメンバ４Ａは単位ねじり角に対して大きなねじり
トルクを吸収でき、かつ、ねじりによる断面変形が生じ
にくい円形断面に形成してあるから、前述のように左右
のフロントメンバ４Ａの端部間スパンが拡大する際にフ
ロントメンバ４Ａにねじり力が作用しても、該フロント
メンバ４Ａを局部的な壁面座屈による折れ曲がりを伴う
ことなく適正に潰れ変形させることができる。Since the front ends of the left and right front members 4A are connected to each other by connecting the cross members 25, when the span between the front ends of these members is enlarged, as shown by the imaginary line in FIG. Is twisted, and thus a torsional torque is generated in the front member 4A. The front member 4A is formed in a circular cross section that can absorb a large torsional torque per unit torsion angle and is less likely to undergo cross-sectional deformation due to torsion. Therefore, even if a torsional force acts on the front member 4A when the span between the ends of the left and right front members 4A expands as described above, the front member 4A is bent by local wall buckling. It can be properly crushed and deformed without any deformation.
【００６２】本実施形態ではメンバ連結部材３の上壁３
Ｂ1 の後側部には位置決め段部２１を形成してあって、
この位置決め段部２１がフロントサイドメンバ４のリヤ
メンバ４Ｂの車幅方向内側の上縁に係合して、左右のフ
ロントサイドメンバ４を所定の平面ハの字状の開き角度
に適正に組付けることができるため、設計通りのフロン
トサイドメンバ４の潰れ特性を得ることができる。In the present embodiment, the upper wall 3 of the member connecting member 3
The rear side of the B 1 and each other to form a positioning step 21,
The positioning step 21 is engaged with the upper edge of the rear member 4B of the front side member 4 on the inner side in the vehicle width direction, so that the left and right front side members 4 can be properly assembled at a predetermined flat C-shaped opening angle. Therefore, the crushing characteristic of the front side member 4 as designed can be obtained.
【００６３】また、このメンバ連結部材３の車幅方向内
側の側壁１９（側壁３Ｂ2 ）には、回動支点であるロケ
ートピン１５付近で前記リヤメンバ４Ｂの車幅方向内側
の側壁に当接する凹設部２２を前後方向に形成してある
から、該ロケートピン１５付近の断面係数を大きくでき
ることに加えて、メンバ連結部材３の側壁１９の面剛性
を高められるため、フロントサイドメンバ４の左右方向
の支持剛性・強度を高めることができる。Further, a recessed portion is provided in the vehicle width direction inner side wall 19 (side wall 3B 2 ) of the member connecting member 3 so as to abut on the vehicle width direction inner side wall of the rear member 4B near the locating pin 15 which is a pivot point. Since the portion 22 is formed in the front-rear direction, the section modulus near the locating pin 15 can be increased, and the surface rigidity of the side wall 19 of the member connecting member 3 can be increased, thereby supporting the front side member 4 in the left-right direction. Rigidity and strength can be increased.
【００６４】一方、前記ロケートピン１５はサスペンシ
ョンマウントボルト８の同軸心上に設けてあるため、該
ロケートピン１５を中心とするフロントサイドメンバ４
の回転支持に、サスペンションメンバ１０自体の剛性・
強度を寄与させることができ、該ロケートピン１５の支
持剛性を高めてフロントサイドメンバ４の回転を安定さ
せることができる。On the other hand, since the locate pin 15 is provided on the coaxial center of the suspension mount bolt 8, the front side member 4 centering on the locate pin 15 is provided.
Of the suspension member 10 itself
The strength can be contributed, and the support rigidity of the locate pin 15 can be increased to stabilize the rotation of the front side member 4.
【００６５】また、フロントサイドメンバ４はこのロケ
ートピン１５の近傍でのみメンバ連結部材３に接合し
て、ロケートピン１５から後方の部分は該メンバ連結部
材３と非接合状態としてあるため、前面衝突時にフロン
トサイドメンバ４を確実に回転作動させることができ
る。Further, the front side member 4 is joined to the member connecting member 3 only in the vicinity of the locate pin 15, and a portion behind the locate pin 15 is not joined to the member connecting member 3, so that the front side member 4 is not joined when the front collision occurs. The side member 4 can be reliably rotated.
【００６６】更に、前記メンバ連結部材３は前端部にフ
ロントサイドメンバ４のリヤメンバ４Ｂの下半部に嵌合
する受容部７ａを形成したアーム部７を有するロア部材
３Ａと、前端部にリヤメンバ４Ｂとの嵌合部１７を形成
したアッパ部材３Ｂとの２部品で構成してあって、フロ
ントサイドメンバ４の組付けに際しては、リヤメンバ４
Ｂの後端部をロア部材３Ａのアーム部７の受容部７ａ上
に嵌合，載置し、その上方もしくは側方からアッパ部材
３Ｂを嵌合することによってメンバ連結部材３に容易に
組付けることができて、ロボットによる自動組付けが可
能となり、また、これらロア部材３Ａ，アッパ部材３Ｂ
との嵌合によってフロントサイドメンバ４の位置決めと
仮保持を行えるため、専用の車体組付治具設備が不要と
なり、大幅なコストダウンを実現することができる。Further, the member connecting member 3 has a lower member 3A having a receiving portion 7a formed at a front end thereof and fitted to a lower half of the rear member 4B of the front side member 4, and a rear member 4B at the front end. And the upper member 3B forming the fitting portion 17 with the front member 4 when the front side member 4 is assembled.
The rear end of B is fitted and placed on the receiving portion 7a of the arm 7 of the lower member 3A, and the upper member 3B is fitted from above or from the side to easily assemble the member connecting member 3. This makes it possible to automatically assemble by a robot. In addition, these lower member 3A and upper member 3B
Since the positioning and the temporary holding of the front side member 4 can be performed by the fitting, a dedicated vehicle body assembling jig facility is not required, and a significant cost reduction can be realized.
【００６７】特に、前記ロア部材３Ａは鋳造成形してサ
スペンションマウントボルト８を鋳ぐるみ固定し、この
鋳ぐるみ固定部分に前述のように回動支点としてのロケ
ートピン１５を立設してあるため、これらサスペンショ
ンマウントボルト８およびロケートピン１５を位置決め
治具等を用いて精度出しを行うことなく容易に設定する
ことができることは勿論、前記フロントサイドメンバ４
の組付時には、このロケートピン１５をリヤメンバ４Ｂ
の下壁に設けたロケート孔１６に挿入，係合することに
よってフロントサイドメンバ４の前後方向の位置決めを
行え、従って、組付作業性をより一層向上することがで
きる。In particular, since the lower member 3A is cast and molded, the suspension mount bolt 8 is cast-in and fixed, and the locating pin 15 as a rotation fulcrum is erected on the cast-in fixing portion as described above. The suspension mount bolt 8 and the locating pin 15 can be easily set without using a positioning jig or the like without performing accuracy determination.
When assembling, the locating pin 15 is attached to the rear member 4B.
The front side member 4 can be positioned in the front-rear direction by being inserted into and engaged with the locating hole 16 provided in the lower wall of the vehicle, so that the assembly workability can be further improved.
【００６８】他方、フロントバンパー２９のバンパース
テイ３０は、クロスメンバ２５の連結メンバ２６に設け
たステイ連結部２８に、フロントサイドメンバ４のフロ
ントメンバ４Ａと同軸線上に支持してあるため、衝突入
力をフロントメンバ４Ａの中心軸に適正に作用させるこ
とができる。On the other hand, the bumper stay 30 of the front bumper 29 is supported coaxially with the front member 4A of the front side member 4 by the stay connecting portion 28 provided on the connecting member 26 of the cross member 25. It can properly act on the central axis of the front member 4A.
【００６９】また、このバンパーステイ３０は前記ステ
イ連結部２８に水平方向に回動可能に支持してあるか
ら、車両の前面衝突時に左右のフロントサイドメンバ４
の前端部間のスパンが拡大する際の連結メンバ２６のね
じれ回転を規制することがなく、前記スパン拡大作用を
適正に行わせることができる。The bumper stay 30 is supported by the stay connecting portion 28 so as to be rotatable in the horizontal direction.
The expansion of the span can be properly performed without restricting the torsional rotation of the connecting member 26 when the span between the front ends of the first and second ends increases.
【００７０】また、フロントバンパー２９を衝突方向に
向けることができて、フロントサイドメンバ４の軸線方
向に適正に衝突入力を作用させることができる。Further, the front bumper 29 can be directed in the collision direction, so that a collision input can be appropriately applied in the axial direction of the front side member 4.
【図１】本発明の一実施形態を示す斜視図。FIG. 1 is a perspective view showing an embodiment of the present invention.
【図２】本発明の一実施形態におけるダッシュパネルと
メンバ連結部材のロア部材との関係を示す分解斜視図。FIG. 2 is an exploded perspective view showing a relationship between a dash panel and a lower member of a member connecting member according to the embodiment of the present invention.
【図３】本発明の一実施形態におけるダッシュパネルと
メンバ連結部材およびフロントサイドメンバの組付状態
を示す斜視図。FIG. 3 is a perspective view showing an assembled state of a dash panel, a member connecting member, and a front side member according to the embodiment of the present invention.
【図４】図３の分解斜視図。FIG. 4 is an exploded perspective view of FIG. 3;
【図５】図３の側面図。FIG. 5 is a side view of FIG. 3;
【図６】図３の平面図。FIG. 6 is a plan view of FIG. 3;
【図７】図５のＡ−Ａ線に沿う断面図。FIG. 7 is a sectional view taken along the line AA of FIG. 5;
【図８】図５のＢ−Ｂ線に沿う断面図。FIG. 8 is a sectional view taken along the line BB in FIG. 5;
【図９】図５のＣ−Ｃ線に沿う断面図。FIG. 9 is a sectional view taken along the line CC in FIG. 5;
【図１０】図９のＤ−Ｄ線に沿う断面図。FIG. 10 is a sectional view taken along the line DD in FIG. 9;
【図１１】フロントサイドメンバとクロスメンバおよび
フロントバンパーとの関係を示す斜視図。FIG. 11 is a perspective view showing the relationship between a front side member, a cross member, and a front bumper.
【図１２】クロスメンバ端部の連結メンバの変形作動を
説明する正面図。FIG. 12 is a front view illustrating the deformation operation of the connecting member at the end of the cross member.
１ ダッシュパネル ３ メンバ連結部材 ３Ａ ロア部材 ３Ｂ アッパ部材 ３Ｂ1 上壁 ３Ｂ2 側壁 ４ フロントサイドメンバ ４Ａ フロントメンバ ４Ｂ リヤメンバ ７ アーム部 ７ａ 受容部 ８ サスペンションマウントボルト １５ 回動支点（ロケートピン） １６ ロケート孔 １７ アッパ部材の嵌合部 １９ メンバ連結部材の側壁 １９ａ 斜面部 ２１ 位置決め段部 ２２ 凹設部 ２３ ストッパ縁 ２５ クロスメンバ ２８ ステイ連結部 ２９ フロントバンパー ３０ バンパーステイ Ｒ 車室 Ｆ・Ｃ フロントコンパートメントDESCRIPTION OF SYMBOLS 1 Dash panel 3 Member connection member 3A Lower member 3B Upper member 3B 1 Upper wall 3B 2 Side wall 4 Front side member 4A Front member 4B Rear member 7 Arm part 7a Reception part 8 Suspension mount bolt 15 Rotating fulcrum (locate pin) 16 Locate hole 17 Fitting portion of upper member 19 Side wall of member connecting member 19a Slope portion 21 Positioning step 22 Depressed portion 23 Stopper edge 25 Cross member 28 Stay connecting portion 29 Front bumper 30 Bumper stay R Vehicle compartment FC Front compartment
Claims (12)
されたフロントコンパートメントの左右両側部に前後方
向に延在するフロントサイドメンバを、左右メンバ間の
スパンが前端側からダッシュパネル側に至るに従って小
さくなる平面ハの字状に配置する一方、ダッシュパネル
に、前方に張り出し、かつ、前端側に対してダッシュパ
ネル側の閉断面積を拡大したメンバ連結部材を結合配置
すると共にその前端部に回動支点を設定し、該メンバ連
結部材に前記フロントサイドメンバの後端部を前記回動
支点を中心に水平方向に回動可能に抱持固定すると共
に、ダッシュパネルにフロントサイドメンバの後端上縁
に係合してフロントサイドメンバ後端の上方への移動を
拘束し、かつ、水平方向の回転をガイドするストッパ縁
を設けたことを特徴とする自動車の車体前部構造。1. A front side member extending in the front-rear direction on both left and right sides of a front compartment separated by a dash panel on the front side of a vehicle compartment, and as the span between the left and right members extends from the front end side to the dash panel side. On the dash panel, a member connecting member that protrudes forward and has an enlarged closed cross-sectional area on the dash panel side with respect to the front end side is arranged and connected to the front end. A moving fulcrum is set, and the rear end of the front side member is held and fixed to the member connecting member so as to be rotatable in the horizontal direction about the rotation fulcrum. A stopper edge that engages with the edge to restrain upward movement of the rear end of the front side member and guides horizontal rotation is provided. Front structure of a car.
に、回動支点付近からダッシュパネル側に至るに従って
フロントサイドメンバの車幅方向内側の側壁から離間す
る回動規制用の斜面部を設けたことを特徴とする請求項
１に記載の自動車の車体前部構造。2. A side wall on the inner side in the vehicle width direction of the member connecting member is provided with a slope portion for rotation control which is separated from the inner side wall on the vehicle width direction of the front side member from the vicinity of the rotation fulcrum to the dash panel side. The vehicle body front structure according to claim 1, wherein:
ントサイドメンバの車幅方向内側の上縁に係合する位置
決め段部を形成したことを特徴とする請求項１，２に記
載の自動車の車体前部構造。3. A positioning step formed on the rear side of the upper wall of the member connecting member to engage with an upper edge of the front side member in the vehicle width direction. Car body front structure.
スペンションマウントボルトと同軸心上に設けると共
に、フロントサイドメンバを該回動支点の近傍でのみメ
ンバ連結部材と接合固定したことを特徴とする請求項１
〜３の何れかに記載の自動車の車体前部構造。4. A rotation fulcrum is provided coaxially with a suspension mount bolt fixed to a member connecting member, and a front side member is fixedly joined to the member connecting member only in the vicinity of the rotation fulcrum. Claim 1
A vehicle body front structure according to any one of claims 1 to 3.
に、回動支点付近でフロントサイドメンバの車幅方向内
側の側壁に当接する凹設部を前後方向に形成したことを
特徴とする請求項１〜４の何れかに記載の自動車の車体
前部構造。5. A front-rear recess formed in a vehicle width direction inner side wall of the member connecting member, the concave portion being in contact with a vehicle width direction inner side wall of a front side member near a rotation fulcrum. Item 5. A vehicle body front structure according to any one of Items 1 to 4.
合されて前方に張り出し、かつ、前端部下面にサスペン
ションマウントボルトを固設したアーム部を備え、該ア
ーム部の前端部にフロントサイドメンバの略下半部に嵌
合する受容部と、回動支点を設けたロア部材と、 上壁と車幅方向内側の側壁とで断面逆Ｌ字状に形成され
て、前端部をフロントサイドメンバとの嵌合部とし、後
端をダッシュパネルに接合すると共に前記側壁をロア部
材に接合したアッパ部材と、の２部品で構成したことを
特徴とする請求項１〜５の何れかに記載の自動車の車体
前部構造。6. An arm portion, wherein a member connecting member is connected to a dash panel and projects forward, and an arm portion having a suspension mount bolt fixed to a lower surface of a front end portion is provided. A front side member is substantially provided at a front end portion of the arm portion. A receiving portion fitted to the lower half, a lower member provided with a pivot point, and an upper wall and an inner side wall in the vehicle width direction are formed in an inverted L-shaped cross section, and a front end is formed with a front side member. The vehicle according to any one of claims 1 to 5, wherein the fitting portion is composed of two parts: an upper member having a rear end joined to a dash panel and the side wall joined to a lower member. Body front structure.
量金属材料で鋳造成形して、サスペンションマウントボ
ルトを鋳ぐるみ固定し、該サスペンションマウントボル
トの鋳ぐるみ固定部分を回動支点としたことを特徴とす
る請求項６に記載の自動車の車体前部構造。7. The suspension mount bolt is cast-fixed by casting at least a lower member of the member connecting member from a lightweight metal material, and the cast-fixed portion of the suspension mount bolt is used as a rotation fulcrum. The vehicle body front structure according to claim 6, wherein:
ンで構成する一方、フロントサイドメンバの下壁には該
ロケートピンが挿入係合するロケート孔を設けたことを
特徴とする請求項１〜７の何れかに記載の自動車の車体
前部構造。8. The method according to claim 1, wherein the rotation fulcrum is constituted by a locating pin protruding upward, and a locating hole is formed in a lower wall of the front side member for inserting and engaging the locating pin. The vehicle body front structure according to any one of the above.
構造に車幅方向に押出成形する一方、フロントサイドメ
ンバの少くとも後側部を軽量金属材料で一定の閉断面形
状に押出成形したことを特徴とする請求項１〜８の何れ
かに記載の自動車の車体前部構造。9. A method in which a dash panel is extruded from a lightweight metal material into a closed-section structure in a vehicle width direction, and at least a rear side portion of a front side member is extruded from a lightweight metal material into a constant closed-section shape. A vehicle body front structure according to any one of claims 1 to 8, wherein:
材で連結したフロントメンバとリヤメンバとで構成し、
少くともフロントメンバを断面円形に形成して左右のメ
ンバ前端部間をクロスメンバで結合したことを特徴とす
る請求項１〜９の何れかに記載の自動車の車体前部構
造。10. A front side member comprising a front member connected to a front side member by a joint member and a rear member,
The vehicle body front structure according to any one of claims 1 to 9, wherein at least the front member is formed in a circular cross section and the left and right member front ends are connected by a cross member.
合部分に、フロントバンパーのバンパーステイをフロン
トメンバと同軸線上に支持するステイ連結部を設けたこ
とを特徴とする請求項１０に記載の自動車の車体前部構
造。11. A front body of an automobile according to claim 10, wherein a stay connecting portion for supporting a bumper stay of the front bumper coaxially with the front member is provided at a connecting portion of the cross member with the front member. Part structure.
方向に回動可能に連結したことを特徴とする請求項１１
に記載の自動車の車体前部構造。12. The bumper stay is connected to a stay connecting portion so as to be rotatable in a horizontal direction.
2. The vehicle body front structure according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25467699A JP3861525B2 (en) | 1999-09-08 | 1999-09-08 | Auto body front structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25467699A JP3861525B2 (en) | 1999-09-08 | 1999-09-08 | Auto body front structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001071945A true JP2001071945A (en) | 2001-03-21 |
| JP3861525B2 JP3861525B2 (en) | 2006-12-20 |
Family
ID=17268325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25467699A Expired - Fee Related JP3861525B2 (en) | 1999-09-08 | 1999-09-08 | Auto body front structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3861525B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010006154A (en) * | 2008-06-25 | 2010-01-14 | Mazda Motor Corp | Vehicle body structure of automobile |
| JP2010115998A (en) * | 2008-11-12 | 2010-05-27 | Honda Motor Co Ltd | Vehicle body front part structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49133323U (en) * | 1973-03-17 | 1974-11-15 | ||
| JPS62105780A (en) * | 1985-10-31 | 1987-05-16 | Mazda Motor Corp | Lower car body construction |
| JPH01130882U (en) * | 1988-03-02 | 1989-09-06 | ||
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| JPH03235764A (en) * | 1990-02-13 | 1991-10-21 | Nissan Motor Co Ltd | Suspension mounting part structure for automobile |
| JPH0415174A (en) * | 1990-05-07 | 1992-01-20 | Suzuki Motor Corp | Front body construction of automobile |
| JPH0492770A (en) * | 1990-08-09 | 1992-03-25 | Toyota Motor Corp | Fitting construction for front subframe of body |
| JPH06503779A (en) * | 1990-12-20 | 1994-04-28 | アウディ アクチェンゲゼルシャフト | Passenger car body support structure |
| JPH07257432A (en) * | 1994-03-25 | 1995-10-09 | Toyota Motor Corp | Front body structure for automobile |
| JPH08268324A (en) * | 1995-03-30 | 1996-10-15 | Nissan Motor Co Ltd | Structure of mounting parts on extruded material |
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| JPH09249152A (en) * | 1996-03-15 | 1997-09-22 | Nissan Motor Co Ltd | Connection structure for member |
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| JPH10264862A (en) * | 1997-03-27 | 1998-10-06 | Mitsubishi Motors Corp | Front part car body structure of automobile |
| JPH11105737A (en) * | 1997-10-03 | 1999-04-20 | Nissan Motor Co Ltd | Car body structure of automobile |
| JPH11208505A (en) * | 1998-01-26 | 1999-08-03 | Nissan Motor Co Ltd | Side member connection structure of vehicle |
| JPH11208517A (en) * | 1998-01-20 | 1999-08-03 | Nissan Motor Co Ltd | Connecting structure for skeleton member of vehicle |
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| JPS62105780A (en) * | 1985-10-31 | 1987-05-16 | Mazda Motor Corp | Lower car body construction |
| JPH01130882U (en) * | 1988-03-02 | 1989-09-06 | ||
| JPH02254071A (en) * | 1989-03-29 | 1990-10-12 | Mazda Motor Corp | Front part car body structure for automobile |
| JPH03235764A (en) * | 1990-02-13 | 1991-10-21 | Nissan Motor Co Ltd | Suspension mounting part structure for automobile |
| JPH0415174A (en) * | 1990-05-07 | 1992-01-20 | Suzuki Motor Corp | Front body construction of automobile |
| JPH0492770A (en) * | 1990-08-09 | 1992-03-25 | Toyota Motor Corp | Fitting construction for front subframe of body |
| JPH06503779A (en) * | 1990-12-20 | 1994-04-28 | アウディ アクチェンゲゼルシャフト | Passenger car body support structure |
| JPH07257432A (en) * | 1994-03-25 | 1995-10-09 | Toyota Motor Corp | Front body structure for automobile |
| JPH08268324A (en) * | 1995-03-30 | 1996-10-15 | Nissan Motor Co Ltd | Structure of mounting parts on extruded material |
| JPH0966864A (en) * | 1995-09-01 | 1997-03-11 | Honda Motor Co Ltd | Automobile body structure |
| JPH09249152A (en) * | 1996-03-15 | 1997-09-22 | Nissan Motor Co Ltd | Connection structure for member |
| JPH10138953A (en) * | 1996-11-12 | 1998-05-26 | Suzuki Motor Corp | Car body front structure |
| JPH10264862A (en) * | 1997-03-27 | 1998-10-06 | Mitsubishi Motors Corp | Front part car body structure of automobile |
| JPH11105737A (en) * | 1997-10-03 | 1999-04-20 | Nissan Motor Co Ltd | Car body structure of automobile |
| JPH11208517A (en) * | 1998-01-20 | 1999-08-03 | Nissan Motor Co Ltd | Connecting structure for skeleton member of vehicle |
| JPH11208505A (en) * | 1998-01-26 | 1999-08-03 | Nissan Motor Co Ltd | Side member connection structure of vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010006154A (en) * | 2008-06-25 | 2010-01-14 | Mazda Motor Corp | Vehicle body structure of automobile |
| JP2010115998A (en) * | 2008-11-12 | 2010-05-27 | Honda Motor Co Ltd | Vehicle body front part structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3861525B2 (en) | 2006-12-20 |
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