JP2003019981A - Body front structure of automobile - Google Patents
Body front structure of automobileInfo
- Publication number
- JP2003019981A JP2003019981A JP2001208127A JP2001208127A JP2003019981A JP 2003019981 A JP2003019981 A JP 2003019981A JP 2001208127 A JP2001208127 A JP 2001208127A JP 2001208127 A JP2001208127 A JP 2001208127A JP 2003019981 A JP2003019981 A JP 2003019981A
- Authority
- JP
- Japan
- Prior art keywords
- hood
- reinforcing
- vehicle body
- reinforcing member
- ridge
- 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.)
- Pending
Links
Landscapes
- Superstructure Of Vehicle (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
造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body front structure.
【０００２】[0002]
【従来の技術】自動車の中には、例えば図１０に示すよ
うにフロントオーバーハング量が小さく、車体前部にパ
ワーユニット等の剛体構造部品を搭載しないで、フード
１を固定式とし、該フード１の下方にはブレーキオイ
ル，ラジエータ液，ウオッシャ液等の補充タンクを配設
して、それらの保守点検のためにフード１にリッドによ
り開閉される開口部を設けたものが知られている。2. Description of the Related Art In an automobile, for example, as shown in FIG. 10, the front overhang amount is small, and a rigid body structural component such as a power unit is not mounted on the front portion of the vehicle body. It is known that a replenishment tank for brake oil, a radiator liquid, a washer liquid, etc. is disposed below the above, and an opening portion which is opened and closed by a lid is provided in the hood 1 for maintenance and inspection thereof.
【０００３】この車体構造では、車体の前部上側の前後
方向骨格部材である左右のフードリッジ２を、ヘッドラ
ンプ３との干渉を回避するために図外のストラットサス
ペンション取付部の後方のみとしてカウルボックス４と
ほぼ同じ位置まで後退配置し、前述のフード１はその前
端をラジエータコアサポートパネル５に固定し、左右両
側部をフロントフェンダに固定するようにしてあって、
該フード１の下側には骨格部材が存在せず、前面衝突時
のエネルギー吸収はフロントバンパー７からの入力で車
体前部下側の左右のサイドメンバ６が軸圧潰変形するこ
とで負担するようにしている。In this vehicle body structure, the left and right hood ridges 2 which are front and rear skeletal members on the upper front side of the vehicle body are cowled only behind the strut suspension mounting portion (not shown) in order to avoid interference with the headlamp 3. The hood 1 is retracted to almost the same position as the box 4, the front end of the hood 1 is fixed to the radiator core support panel 5, and both left and right sides are fixed to the front fender.
There is no skeleton member under the hood 1, and energy absorption at the time of a frontal collision is borne by axial compression deformation of the left and right side members 6 on the lower side of the front part of the vehicle body by input from the front bumper 7. There is.
【０００４】[0004]
【発明が解決しようとする課題】前述のように前面衝突
時のエネルギー吸収を主にサイドメンバ６の軸圧潰変形
で負担するようにしているため、前面衝突時における車
体前部の変形がフロントウインドシールド８におよばな
いようにして、かつ、エネルギー吸収効率を高めるため
には、前記サイドメンバ６の閉断面積を拡大したり、そ
のパネル板厚を増大したりする必要があって、重量的に
不利となってしまうのみならず、レイアウトが難しくな
ったりパネル板厚の増大によって溶接作業が難しくなる
といった問題が生じてしまう。As described above, since the energy absorption during a frontal collision is mainly borne by the axial crush deformation of the side member 6, the deformation of the front part of the vehicle body during a frontal collision is prevented. In order to prevent the shield 8 from reaching the shield 8 and to enhance the energy absorption efficiency, it is necessary to enlarge the closed cross-sectional area of the side member 6 or increase the panel plate thickness thereof, which is weight-related. Not only is it disadvantageous, but there are problems that the layout becomes difficult and the welding work becomes difficult due to an increase in the panel thickness.
【０００５】そこで、本発明はフードに前面衝突時にお
けるエネルギー吸収機能を付与することで、サイドメン
バの構造変更を伴うことなく車体前部の潰れ変形がフロ
ントウインドシールドにまでおよぶのを抑制できる自動
車の車体前部構造を提供するものである。Therefore, according to the present invention, by providing the hood with an energy absorbing function in the case of a frontal collision, it is possible to suppress the collapse deformation of the front part of the vehicle body to the front windshield without changing the structure of the side member. The vehicle body front structure is provided.
【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、フードの左右両側部の下面に該フードと一体となっ
て閉断面を形成する側部補強部材を設け、該側部補強部
材をフード後側部で車体前部上側の前後方向骨格部材で
あるフードリッジの上面側に配される第１補強部と、フ
ード前側部で段部を境に第１補強部よりも下方に突出し
て形成されて、該段部がフードリッジの前端に当接した
該フードリッジよりも低強度の第２補強部とで構成した
ことを特徴としている。According to the invention of claim 1, side reinforcement members are provided on the lower surfaces of the left and right side portions of the hood to form a closed cross section integrally with the hood. A member is a rear side portion of the hood, and a first reinforcing portion is disposed on an upper surface side of a hood ridge that is a front and rear direction skeleton member on an upper side of a front portion of the vehicle body. It is characterized in that it is formed so as to project, and the stepped portion is constituted by a second reinforcing portion having a lower strength than the hood ridge contacting the front end of the hood ridge.
【０００７】請求項２の発明にあっては、請求項１に記
載の自動車の車体前部構造であって、側部補強部材の第
２補強部の閉断面積を前端に向かって徐々に小さくした
ことを特徴としている。According to a second aspect of the present invention, in the vehicle body front structure according to the first aspect, the closed cross-sectional area of the second reinforcing portion of the side reinforcing member is gradually reduced toward the front end. It is characterized by having done.
【０００８】請求項３の発明にあっては、請求項１，２
に記載の自動車の車体前部構造であって、フードの前端
に、左右の側部補強部材の第２補強部の前端部間を連結
してフードと一体となって閉断面を形成する前部補強部
材を設け、該前部補強部材の前後幅寸法を高さ寸法より
も大きく設定したことを特徴としている。According to the invention of claim 3, claims 1 and 2 are provided.
The vehicle body front structure according to claim 1, wherein the front end of the hood is connected to the front ends of the second reinforcing portions of the left and right side reinforcing members to form a closed cross section integrally with the hood. It is characterized in that a reinforcing member is provided and the front-rear width dimension of the front reinforcing member is set larger than the height dimension.
【０００９】請求項４の発明にあっては、請求項１〜３
に記載の自動車の車体前部構造であって、側部補強部材
の第１補強部をフードリッジに係止したことを特徴とし
ている。In the invention of claim 4, claims 1 to 3
In the vehicle body front structure described in (4) above, the first reinforcing portion of the side reinforcing member is locked to the hood ridge.
【００１０】請求項５の発明にあっては、請求項４に記
載の自動車の車体前部構造であって、フードリッジの上
面に係止突起を設ける一方、第１補強部の下面に前記係
止突起の頭部が挿通可能な挿通孔と該挿通孔から係止突
起の首部と略同一幅で車両前方に向けて形成されたスリ
ットとからなる係止孔を設け、これら係止突起と係止孔
とで第１補強部をフードリッジに係止したことを特徴と
している。According to a fifth aspect of the present invention, there is provided the vehicle body front structure according to the fourth aspect, in which a locking protrusion is provided on an upper surface of the hood ridge and the engaging portion is provided on a lower surface of the first reinforcing portion. A locking hole is provided which is formed of an insertion hole through which the head of the stop projection can be inserted and a slit formed from the insertion hole toward the front of the vehicle with substantially the same width as the neck portion of the locking projection. The first reinforcing portion is locked to the hood ridge with the stop hole.
【００１１】請求項６の発明にあっては、請求項１〜５
に記載の自動車の車体前部構造であって、フードリッジ
の上面にフロントフェンダを取付ける一方、フードに開
口部を設けて該開口部から作業可能な位置で前記フロン
トフェンダと側部補強部材の第１補強部とを締結固定し
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 front vehicle body structure of the automobile according to 1, wherein the front fender is mounted on the upper surface of the hood ridge, while the opening is provided in the hood, and the front fender and the side reinforcing member are provided at a position where work is possible from the opening. (1) It is characterized by fastening and fixing the reinforcing portion.
【００１２】[0012]
【発明の効果】請求項１に記載の発明によれば、フード
に設けた側部補強部材の第２補強部が、第１補強部との
境の段部をフードリッジの前端に当接させて該フードリ
ッジの前側に配置されていて、しかも、フードリッジよ
りも低強度とされているため、前面衝突時にこの第２補
強部が軸圧潰してサイドメンバの軸圧潰作用と共に衝突
エネルギーを効率よく吸収することができる。According to the invention described in claim 1, the second reinforcing portion of the side reinforcing member provided on the hood makes the step portion at the boundary with the first reinforcing portion abut on the front end of the hood ridge. Since the hood ridge is disposed on the front side of the hood ridge and has a lower strength than the hood ridge, the second reinforcement portion axially crushes at the time of a frontal collision, and the side members are axially crushed to efficiently collide energy. Can be well absorbed.
【００１３】一方、側部補強部材の第１補強部はフード
後側部に存在しているため、フードリッジと共に車体前
部の強度剛性を保持して、車体前部の変形がフロントウ
インドシールドにまでおよぶのを抑制することができ
る。On the other hand, since the first reinforcing portion of the side reinforcing member is present on the rear side of the hood, the strength and rigidity of the front portion of the vehicle body are maintained together with the hood ridge, and the deformation of the front portion of the vehicle body is caused by the deformation of the front windshield. It can be suppressed to reach.
【００１４】従って、サイドメンバの閉断面積を拡大し
たり、板厚を増大したりして該サイドメンバの構造変更
を伴うことなくエネルギー吸収効果を向上できると共に
車体前部の変形をフロントウインドシールドの前方位置
までに規制することができる。Therefore, the energy absorption effect can be improved without enlarging the structure of the side member by enlarging the closed cross-sectional area of the side member or increasing the plate thickness, and the deformation of the front portion of the vehicle body can be prevented by the front windshield. Can be regulated up to the front position.
【００１５】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、側部補強部材の第２補強部はそ
の閉断面積を前端に向かって徐々に小さくしてあるた
め、前面衝突時に前端側から適正に軸圧潰変形させるこ
とができて、エネルギー吸収作用を安定化させることが
できる。According to the invention described in claim 2, claim 1
In addition to the effect of the invention described above, since the closed cross-sectional area of the second reinforcing portion of the side portion reinforcing member is gradually reduced toward the front end, it is possible to properly deform the axial crush from the front end side at the time of a frontal collision. As a result, the energy absorption action can be stabilized.
【００１６】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、前部補強部材は前後幅を
大きくして前後方向の曲げ剛性が高くされているため、
フルラップ衝突時には該前部補強部材の車幅方向の軸圧
縮反力によって、側部補強部材の第２補強部の曲がり変
形を抑制でき、また、左右何れか一方寄りにオフセット
衝突した場合には、前部補強部材を介して他方側の側部
補強部材に力を分散して、一方の側部補強部材の第２補
強部の曲がり変形を抑制することができる。According to the third aspect of the invention, in addition to the effects of the first and second aspects of the invention, the front reinforcing member has a large front-rear width to increase the bending rigidity in the front-rear direction.
At the time of a full-wrap collision, it is possible to suppress the bending deformation of the second reinforcing portion of the side reinforcing member by the axial compression reaction force of the front reinforcing member in the vehicle width direction, and in the case of an offset collision to one of the left and right sides, It is possible to suppress the bending deformation of the second reinforcing portion of the one side reinforcing member by distributing the force to the other side reinforcing member via the front reinforcing member.
【００１７】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、側部補強部材の第１補強部
をフードリッジに係止してあるため、前面衝突時にフー
ドの後退移動を抑制できると共に、衝突後期でフードリ
ッジが潰れ変形する段階では第１補強部とフードリッジ
とが一体となって高い反力を発生して、車体前部の変形
規制効果を高めることができる。According to the invention of claim 4, claim 1
In addition to the effects of the inventions of 3 to 3, since the first reinforcing portion of the side reinforcing member is locked to the hood ridge, the backward movement of the hood can be suppressed at the time of a frontal collision, and the hood ridge is crushed and deformed in the latter stage of the collision. In the step of performing, the first reinforcing portion and the hood ridge are integrated with each other to generate a high reaction force, and the deformation regulation effect of the front portion of the vehicle body can be enhanced.
【００１８】請求項５に記載の発明によれば、請求項４
の発明の効果に加えて、フードをフードリッジ上に載置
して、係止突起の頭部を係止孔の挿通孔に挿通させた
後、係止突起の首部が係止孔のスリットに係止する位置
までフードを後方へずらすことによって、フードをフー
ドリッジに対して容易に係止することができる。According to the invention of claim 5, claim 4
In addition to the effects of the invention described above, after placing the hood on the hood ridge and inserting the head of the locking projection into the insertion hole of the locking hole, the neck portion of the locking projection becomes the slit of the locking hole. The hood can be easily locked to the hood ridge by shifting the hood rearward to the locking position.
【００１９】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、側部補強部材の第１補強部
をフードリッジ上面に固定したフロントフェンダに締結
固定してあるため、前面衝突時に第１補強部の上方への
変形を確実に抑制することができる。また、第１補強部
はフードの開口部が作業可能な位置でフロントフェンダ
に締結されるため、フードの固定作業を容易に行うこと
ができる。According to the invention of claim 6, claim 1
In addition to the effects of the inventions of 5 to 5, since the first reinforcing portion of the side reinforcing member is fastened and fixed to the front fender fixed to the upper surface of the hood ridge, the upward deformation of the first reinforcing portion is ensured at the time of a frontal collision. Can be suppressed. Moreover, since the first reinforcing portion is fastened to the front fender at a position where the opening of the hood can be worked, the work of fixing the hood can be easily performed.
【００２０】[0020]
【発明の実施の形態】以下、本発明の一実施形態をフロ
ントオーバーハング量の小さな車両を例にとって図面と
共に詳述する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings by taking a vehicle with a small front overhang as an example.
【００２１】図１〜６において、１１はピラーロア１１
Ａとピラーアッパ１１Ｂとからなるフロントピラーを示
し、該ピラーロア１１Ａの上側部に車体前部上側の前後
方向骨格部材を構成するフードリッジ１２を一体に前方
に突出して形成してある。1 to 6, 11 is a pillar lower 11
A front pillar composed of A and a pillar upper 11B is shown, and a hood ridge 12 which constitutes a front-rear direction skeleton member on the front upper side of the vehicle body is integrally formed on the upper side of the pillar lower 11A so as to project forward.
【００２２】フードリッジ１２は略Ｌ字形断面のアッパ
パネル１２ａとロアパネル１２ｂとで閉断面に形成して
あり、その配設位置は後述するヘッドランプ１６との干
渉を回避するために図外のストラットサスペンション取
付部の後方のみとして後退配置してある。The hood ridge 12 is formed in a closed cross section by an upper panel 12a and a lower panel 12b having a substantially L-shaped cross section, and its disposition position is a strut suspension (not shown) in order to avoid interference with a head lamp 16 described later. It is set back only as the rear of the mounting part.
【００２３】左右のフロントピラー１１，１１のピラー
ロア１１Ａとピラーアッパ１１Ｂとフードリッジ１２と
が集合した部分間に跨って、フロントウエスト部の車幅
方向骨格部材を構成するダッシュアッパクロスメンバ１
３を結合配置してある。The dash upper cross member 1 which constitutes a skeleton member in the vehicle width direction of the front waist, straddles between the portions where the pillar lowers 11A, the pillar uppers 11B and the hood ridges 12 of the left and right front pillars 11, 11 are gathered.
3 are arranged in combination.
【００２４】１４は車体前端部の骨格部材を構成するラ
ジエータコアサポートパネルを示し、アッパレール１４
Ａとロアレール１４Ｂ、およびこれらアッパレール１４
Ａとロアレール１４Ｂとを連設する左右のステイ１４Ｃ
とを備えている。Reference numeral 14 denotes a radiator core support panel which constitutes a skeletal member at the front end of the vehicle body.
A and the lower rail 14B, and these upper rails 14
Left and right stays 14C connecting A and lower rail 14B in series
It has and.
【００２５】アッパレール１４Ａの左右両側部はランプ
取付部１５と共に斜め後方に曲折して形成して、各端末
部をフードリッジ１２の前端部上にボルト・ナット１８
ａにより締結固定してあり、ヘッドランプ１６はブラケ
ット１６ａを介して前記ランプ取付部１５にボルト・ナ
ット１８ｂにより取付けて後退状態に配置してある。The left and right sides of the upper rail 14A are formed by bending the lamp mounting portion 15 in an obliquely rearward direction, and each terminal portion is provided on the front end portion of the hood ridge 12 by a bolt and nut 18.
The headlamp 16 is fastened and fixed by a, and the headlamp 16 is mounted in the lamp mounting portion 15 via a bracket 16a by a bolt and a nut 18b and is arranged in a retracted state.
【００２６】前記左右のステイ１４Ｃにはブラケット部
１７を形成してあって、このブラケット部１７の後面に
車体前部下側の前後方向骨格部材であるサイドメンバの
前端を締結固定すると共に、該ブラケット部１７の前面
にフロントバンパー２４を締結固定するようにしている
（サイドメンバは図１０を参照）。A bracket portion 17 is formed on each of the left and right stays 14C. The rear end of the bracket portion 17 is fastened and fixed to the front end of a side member which is a front-back direction skeleton member on the lower side of the front portion of the vehicle body. The front bumper 24 is fastened and fixed to the front surface of the portion 17 (see FIG. 10 for side members).
【００２７】フロントフェンダ１９はその上側部内側に
略コ字形断面の取付部２０を前後方向に接合配置してあ
り、該取付部２０をフードリッジ２の上面に載置してボ
ルト・ナット２１により締結固定し、下部前端を前記フ
ロントバンパー２４にボルト・ナット２２により締結固
定してある。The front fender 19 has a mounting portion 20 having a substantially U-shaped cross section which is joined to the inside of the upper side in the front-rear direction. The mounting portion 20 is placed on the upper surface of the hood ridge 2 and is fixed by bolts and nuts 21. The lower front end is fastened and fixed to the front bumper 24 with bolts and nuts 22.
【００２８】取付部２０を固定するボルトには、後述す
るフード２５の側部補強部材２８を係止するための首部
２３ａと頭部２３ｂとからなる係止突起２３を一体に形
成してある。The bolt for fixing the mounting portion 20 is integrally formed with a locking projection 23 composed of a neck portion 23a and a head portion 23b for locking a side reinforcing member 28 of the hood 25 which will be described later.
【００２９】フード２５はその前端部をフロントバンパ
ー２４の上面に当接する位置まで下方に曲折して延設し
てあり、該フード２５の上面にはその前後幅および左右
幅にほぼおよぶ開口面積で開口部２６を形成してあり、
該開口部２６をカバー２７で着脱自在に閉塞するように
している。The hood 25 has a front end portion bent and extended downward to a position where it comes into contact with the upper surface of the front bumper 24, and the upper surface of the hood 25 is opened with an opening area substantially extending in the front-rear width and the left-right width. Forming part 26,
The opening 26 is detachably closed by a cover 27.
【００３０】このフード２５の左右両側部の下面には、
該フード２５と一体となって閉断面を形成する略ハット
形断面の側部補強部材２８を設けてある。On the lower surfaces of the left and right sides of the hood 25,
A side reinforcing member 28 having a substantially hat-shaped cross section which is integrated with the hood 25 to form a closed cross section is provided.
【００３１】側部補強部材２８は、フード後側部で前記
フードリッジ１２に取付けられる第１補強部２８Ａと、
フード前側部で段部２８Ｃを境に第１補強部２８Ａより
も下方に突出して形成された第２補強部２８Ｂとを備
え、前記段部２８Ｃをフードリッジ１２の前端に当接さ
せて第２補強部２８Ｂをフードリッジ１２の前方に配置
してある。The side reinforcing member 28 includes a first reinforcing portion 28A attached to the hood ridge 12 at the rear side of the hood,
A second reinforcing portion 28B formed on the front side of the hood so as to project below the first reinforcing portion 28A with the step portion 28C as a boundary; and the step portion 28C is brought into contact with the front end of the hood ridge 12 The reinforcing portion 28B is arranged in front of the hood ridge 12.
【００３２】この第２補強部２８Ｂはフードリッジ１２
よりも低強度にしてあり、閉断面積を前端に向かって徐
々に小さくしてある。The second reinforcing portion 28B is the hood ridge 12.
It has a lower strength than the above, and the closed cross-sectional area is gradually reduced toward the front end.
【００３３】また、フード２５の前端上側部には、左右
の側部補強部材２８，２８の第２補強部２８Ｂ，２８Ｂ
の端部間を連結して、フード２５と一体となって閉断面
を形成する略Ｌ字形断面の前部補強部材２９を設けてあ
る。Further, on the upper side of the front end of the hood 25, the second reinforcing portions 28B, 28B of the left and right side reinforcing members 28, 28 are provided.
There is provided a front reinforcing member 29 having a substantially L-shaped cross section that connects the ends of the above and forms a closed cross section integrally with the hood 25.
【００３４】この前部補強部材２９は左右の側部補強部
材２８と一体に形成してあり、前後幅寸法Ｌを高さ寸法
Ｈよりも大きく形成してある。The front reinforcement member 29 is formed integrally with the left and right side reinforcement members 28, and the front-rear width dimension L is formed larger than the height dimension H.
【００３５】側部補強部材２８の第１補強部２８Ａの底
壁には、前記係止突起２３に対応する位置に、該係止突
起２３の頭部２３ｂが挿通可能な挿通孔３０ａと、該挿
通孔３０ａから係止突起２３の首部２３ａと略同一幅で
車両前方に向けて形成されたスリット３０ｂとからなる
係止孔３０を設けてあり、これら係止突起２３と係止孔
３０とで第１補強部２８Ａをフードリッジ１２に係止す
るようにしてある。On the bottom wall of the first reinforcing portion 28A of the side reinforcing member 28, an insertion hole 30a into which the head 23b of the locking projection 23 can be inserted is provided at a position corresponding to the locking projection 23. A locking hole 30 is formed from the insertion hole 30a and a neck portion 23a of the locking projection 23 and a slit 30b formed toward the front of the vehicle with substantially the same width, and the locking projection 23 and the locking hole 30 are formed. The first reinforcing portion 28A is locked to the hood ridge 12.
【００３６】また、この第１補強部２８Ａには前記フー
ド２５の開口部２６から締結作業可能な位置、例えば車
幅方向内側の側壁の内面にウエルドナット３１を設けて
あり、該側壁を前記フロントフェンダ１９の取付部２０
の側壁に対して該ウエルドナット３１とボルト３２とに
よって締結固定するようにしてある。A weld nut 31 is provided on the first reinforcing portion 28A at a position where it can be fastened from the opening 26 of the hood 25, for example, on the inner surface of the side wall on the inner side in the vehicle width direction. Mounting part 20 of the fender 19
The weld nut 31 and the bolt 32 are fastened and fixed to the side wall of the.
【００３７】一方、ラジエータコアサポートパネル１４
のアッパレール１４Ａ上にはブラケット３３を車幅方向
に複数個ボルト・ナット３４ａによって固定して立設し
てあり、該ブラケット３３の上端にフード２５の開口部
２６の前縁側のフランジ２６ａと前部補強部材２９の後
縁側のフランジ２９ａとを重合してボルト・ナット３４
ｂによって締結固定するようにしてある。On the other hand, the radiator core support panel 14
A plurality of brackets 33 are fixedly erected on the upper rail 14A in the vehicle width direction by bolts and nuts 34a, and the upper end of the bracket 33 is provided with a flange 26a on the front edge side of the opening 26 of the hood 25 and a front portion. The flange 29a on the rear edge side of the reinforcing member 29 is overlapped with the bolt / nut 34
They are fastened and fixed by b.
【００３８】また、前記アッパレール１４Ａとフロント
バンパー２４の上壁にはそれぞれ車幅方向に複数個のグ
ロメット３５を貫通固定してある一方、前部補強部材２
９の底壁およびフード２５の下方に曲折した前端部の下
縁には、それぞれ前記グロメット３５と対応する位置に
該グロメット３５に嵌入係着するクリップ３６を取付け
てある。A plurality of grommets 35 are fixed through the upper rail 14A and the upper wall of the front bumper 24 in the vehicle width direction.
On the bottom wall of 9 and the lower edge of the front end portion bent downward of the hood 25, clips 36 fitted and engaged with the grommets 35 are attached at positions corresponding to the grommets 35, respectively.
【００３９】前記フード２５は前記左右のフードリッジ
１２およびアッパレール１４Ａ上に載置し、側部補強部
材２８の第１補強部２８Ａの挿通孔３０ａに係止突起２
３の頭部２３ｂを挿通して、フード２５を後方へずらし
てスリット３０ｂに該係止突起２３の首部２３ａを係合
し、次いで、前部補強部材２９およびフード１の前端部
下縁に取付けたクリップ３６を、それぞれ対応するアッ
パレール１４Ａおよびフロントバンパー２４に固定した
グロメット３５に嵌入係着して仮止めされる。The hood 25 is placed on the left and right hood ridges 12 and the upper rails 14A, and the locking projections 2 are inserted into the insertion holes 30a of the first reinforcing portion 28A of the side reinforcing member 28.
3, the head 23b is inserted, the hood 25 is shifted rearward, the neck portion 23a of the locking projection 23 is engaged with the slit 30b, and then the front reinforcing member 29 and the front end lower edge of the hood 1 are attached. The clips 36 are fitted and engaged with the corresponding upper rails 14A and the grommets 35 fixed to the front bumper 24 to be temporarily fixed.
【００４０】そして、この仮止め状態でフード２５の開
口部２６から前記第１補強部２８Ａをフロントフェンダ
１９の取付部２０にウエルドナット３１とボルト３２と
により締結固定すると共に、開口部２６の前縁部を前部
補強部材２９の後縁部と一体的にブラケット３３にボル
ト・ナット３４ｂにより締結固定し、その後、開口部２
６をカバー２７で閉塞して該カバー２７の後縁部を開口
部２６の後縁側のフランジ２６ａと一体的にダッシュア
ッパクロスメンバ１３に固定した複数個のブラケット１
３Ａに図外のボルト・ナット等により締結固定して、フ
ード２５の車体前部への本止めを行うようにしている。In this temporarily fixed state, the first reinforcing portion 28A is fastened and fixed to the mounting portion 20 of the front fender 19 by the weld nut 31 and the bolt 32 from the opening 26 of the hood 25, and the front portion of the opening 26 is provided. The edge portion is fastened and fixed to the bracket 33 integrally with the rear edge portion of the front reinforcing member 29 by the bolts and nuts 34b, and then the opening 2
A plurality of brackets 1 in which 6 is closed by a cover 27 and the rear edge of the cover 27 is fixed to the dash upper cross member 13 integrally with the flange 26a on the rear edge side of the opening 26.
3A is fastened and fixed by bolts and nuts (not shown), and the hood 25 is permanently fixed to the front part of the vehicle body.
【００４１】以上の実施形態の構造によれば、フード２
５に設けた側部補強部材２８の第２補強部２８Ｂが、第
１補強部２８Ａとの境の段部２８Ｃをフードリッジ１２
の前端に当接させて該フードリッジ１２の前側に配置さ
れていて、しかも、フードリッジ１２よりも低強度とさ
れているため、前面衝突時にこの第２補強部２８Ｂが図
９に示すように衝突荷重Ｆによって軸圧潰してサイドメ
ンバ（図１０の符号６を参照）の軸圧潰作用と共に衝突
エネルギーを効率よく吸収することができる。According to the structure of the above embodiment, the hood 2
The second reinforcing portion 28B of the side portion reinforcing member 28 provided on the No. 5 has a step portion 28C at the boundary with the first reinforcing portion 28A.
Since it is disposed on the front side of the hood ridge 12 by being brought into contact with the front end of the hood ridge 12 and has a lower strength than that of the hood ridge 12, the second reinforcing portion 28B is provided at the time of a frontal collision as shown in FIG. It is possible to efficiently crush the shaft by the collision load F and efficiently absorb the collision energy together with the axial crushing action of the side member (see reference numeral 6 in FIG. 10).
【００４２】一方、側部補強部材２８の第１補強部２８
Ａはフード２５の後側部に存在しているため、フードリ
ッジ１２と共に車体前部の強度剛性を保持して、車体前
部の変形がフロントウインドシールド（図１０の符号８
を参照）にまでおよぶのを抑制することができる。On the other hand, the first reinforcing portion 28 of the side reinforcing member 28.
Since A exists on the rear side of the hood 25, the strength and rigidity of the front portion of the vehicle body are maintained together with the hood ridge 12, and the deformation of the front portion of the vehicle body is caused by the deformation of the front windshield (reference numeral 8 in FIG. 10).
(See) can be suppressed.
【００４３】従って、本実施形態のようにフロントオー
バーハング量の小さな車両であっても、前記サイドメン
バの閉断面積を拡大したり、板厚を増大したりして該サ
イドメンバの構造変更を伴うことなくエネルギー吸収効
果を向上できると共に車体前部の変形をフロントウイン
ドシールドの前方位置までに規制することができる。Therefore, even in a vehicle having a small front overhang amount as in the present embodiment, the structure of the side member can be changed by enlarging the closed sectional area of the side member or increasing the plate thickness. The energy absorption effect can be improved without being accompanied, and the deformation of the front portion of the vehicle body can be restricted to the front position of the front windshield.
【００４４】ここで、特に本実施形態にあっては、前側
補強部材２８の第２補強部２８Ｂはその閉断面積を前端
に向かって徐々に小さくしてあるため、前面衝突時に前
端側から適正に軸圧潰変形させることができて、エネル
ギー吸収作用を安定化させることができる。Here, particularly in the present embodiment, the second reinforcing portion 28B of the front side reinforcing member 28 has its closed cross-sectional area gradually reduced toward the front end, so that it is appropriate from the front end side during a frontal collision. The shaft can be crushed and deformed, and the energy absorbing action can be stabilized.
【００４５】また、この側部補強部材２８の第１補強部
２８Ａは、フードリッジ１２に係止してあると共に、該
フードリッジ１２上に固設したフロントフェンダ１９の
取付部２０に締結固定してあるため、前面衝突時にフー
ドリッジ１２が潰れ変形する段階では第１補強部２８Ａ
とフードリッジ１２とが一体となって第１補強部２８Ａ
の上方への変形を確実に抑制し、高い反力を発生して、
車体前部の変形規制効果を高められる。The first reinforcing portion 28A of the side reinforcing member 28 is locked to the hood ridge 12 and is fastened and fixed to the mounting portion 20 of the front fender 19 fixedly mounted on the hood ridge 12. Therefore, when the hood ridge 12 is crushed and deformed during a frontal collision, the first reinforcing portion 28A
The hood ridge 12 and the first reinforcing portion 28A are integrally formed.
Surely suppress the upward deformation of the, and generate a high reaction force,
The effect of restricting the deformation of the front part of the vehicle body can be enhanced.
【００４６】しかも、前記第１補強部２８Ａのフードリ
ッジ１２に対する係止作業に際しては、フード１をフー
ドリッジ１２上に載置して、係止突起２３の頭部２３ｂ
を係止孔３０の挿通孔３０ａに挿通させた後、係止突起
２３の首部２３ａが係止孔３０のスリット３０ｂに係止
する位置までフード２５を後方へずらすことによって、
フード２５をフードリッジ１２に対して容易に係止する
ことができ、そして、該第１補強部２８Ａとフロントフ
ェンダ１９の取付部２０との固定作業に関しては、前述
の係止突起２３と係止孔３０との係合によりフード２５
を仮止めした状態で、該フード２５の開口部２６から容
易に締結固定できるため、フード２５の固定作業を容易
に行うことができる。In addition, when the first reinforcing portion 28A is locked to the hood ridge 12, the hood 1 is placed on the hood ridge 12 and the head 23b of the locking projection 23 is placed.
Is inserted through the insertion hole 30a of the locking hole 30, and then the hood 25 is moved backward to a position where the neck portion 23a of the locking projection 23 is locked in the slit 30b of the locking hole 30.
The hood 25 can be easily locked to the hood ridge 12, and with respect to the work of fixing the first reinforcing portion 28A and the mounting portion 20 of the front fender 19, the hood 25 and the locking protrusion 23 are locked. By engaging with the hole 30, the hood 25
Since the hood 25 can be easily fastened and fixed from the opening 26 of the hood 25 with the tent 25 temporarily fixed, the hood 25 can be easily fixed.
【００４７】そして更に本実施形態にあっては、フード
２５の前端部には左右の側部補強部材２８の第２補強部
２８Ｂの前端部間を連結して前部補強部材２９を設け、
該前部補強部材２９の前後幅寸法を大きくして前後方向
の曲げ剛性を高くしてあるため、フルラップ衝突時には
図７に示すように衝突荷重Ｆｆにより前記補強部材２９
に車幅方向の軸圧縮反力ｆｃが発生し、これにより側部
補強部材２８の第２補強部２８Ｂの内側への曲がり変形
Ｍｆを抑制できる。Further, in the present embodiment, the front reinforcing member 29 is provided at the front end of the hood 25 by connecting the front end portions of the second reinforcing portions 28B of the left and right side reinforcing members 28,
Since the front-rear reinforcing member 29 has a large front-rear width dimension to increase the bending rigidity in the front-rear direction, the reinforcing member 29 is subjected to a collision load Ff at the time of a full-lap collision as shown in FIG.
The axial compression reaction force fc in the vehicle width direction is generated in the vehicle, and thereby the inward bending deformation Mf of the second reinforcing portion 28B of the side reinforcing member 28 can be suppressed.
【００４８】また、図８に示すようなオフセット衝突の
場合には、衝突荷重Ｆｏにより前記補強部材２９を介し
てオフセット衝突と反対側の側部補強部材２８に力ｆｏ
を分散して、衝突側の側部補強部材２８の第２補強部２
８Ｂの内側への曲がり変形Ｍｏを抑制できて、フルラッ
プ衝突，オフセット衝突の何れの場合でも、側部補強部
材２８の第２補強部２８Ｂを有効に軸圧潰変形させるこ
とができる。Further, in the case of an offset collision as shown in FIG. 8, a force fo is exerted on the side reinforcing member 28 on the side opposite to the offset collision through the reinforcing member 29 by the collision load Fo.
The second reinforcing portion 2 of the side portion reinforcing member 28 on the collision side.
The inward bending deformation Mo of 8B can be suppressed, and the second reinforcing portion 28B of the side reinforcing member 28 can be effectively axially crush deformed in both cases of a full-wrap collision and an offset collision.
【００４９】尚、本実施形態では、車体前部に締結固定
されるフード２５を例に説明したが、フードの車体前部
に対する取付方法は何でもよく、フードは車体前部に対
して回動可能なるようにヒンジ部材を介するなどして枢
着されていてもよいし、締結や溶接などによって回動不
能に固定されていてもよい。Although the hood 25 fastened and fixed to the front portion of the vehicle body has been described as an example in the present embodiment, any method of attaching the hood to the front portion of the vehicle body may be used, and the hood is rotatable with respect to the front portion of the vehicle body. As described above, it may be pivotally attached via a hinge member or may be non-rotatably fixed by fastening or welding.
【図１】本発明の一実施形態を示す分解斜視図。FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
【図２】同実施形態のフードリッジとラジエータコアサ
ポートパネル、フロントフェンダ、前，側部補強部材と
の集合部分を示す分解斜視図。FIG. 2 is an exploded perspective view showing a collective portion of the hood ridge of the embodiment, a radiator core support panel, a front fender, a front and side reinforcing member.
【図３】同実施形態のフードリッジと側部補強部材の第
１補強部、フロントフェンダの取付部との集合部分を示
す分解斜視図。FIG. 3 is an exploded perspective view showing a gathering portion of the hood ridge of the embodiment, a first reinforcing portion of a side reinforcing member, and a mounting portion of a front fender.
【図４】図６のＳＣ−ＳＣ線に沿う略示的断面説明図。4 is a schematic cross-sectional explanatory view taken along the line SC-SC in FIG.
【図５】図６のＳＢ−ＳＢ線に沿う略示的断面説明図。5 is a schematic cross-sectional explanatory view taken along the line SB-SB in FIG.
【図６】同実施形態のフードの略示的平面図。FIG. 6 is a schematic plan view of the hood of the same embodiment.
【図７】フルラップ衝突時における作用を説明する図６
と同様の平面図。FIG. 7 is a diagram for explaining the operation at the time of a full-lap collision.
Plan view similar to.
【図８】オフセット衝突時における作用を説明する図６
と同様の平面図。FIG. 8 is a diagram for explaining the operation at the time of an offset collision.
Plan view similar to.
【図９】図６のＳＡ−ＳＡ線に沿う略示的断面説明図。9 is a schematic cross-sectional explanatory view taken along the line SA-SA in FIG.
【図１０】従来の構造を示す略示的側面説明図。FIG. 10 is a schematic side view showing a conventional structure.
１２ フードリッジ １９ フロントフェンダ ２３ 係止突起 ２３ａ 首部 ２３ｂ 頭部 ２５ フード ２６ 開口部 ２８ 側部補強部材 ２８Ａ 第１補強部 ２８Ｂ 第２補強部 ２８Ｃ 段部 ２９ 前部補強部材 ３０ 係止孔 ３０ａ 挿通孔 ３０ｂ スリット 12 Food Ridge 19 front fender 23 Locking protrusion 23a neck 23b head 25 hood 26 opening 28 Side reinforcement member 28A First reinforcing portion 28B 2nd reinforcement part 28C step 29 Front reinforcement member 30 locking hole 30a insertion hole 30b slit
Claims (6)
一体となって閉断面を形成する側部補強部材を設け、該
側部補強部材をフード後側部で車体前部上側の前後方向
骨格部材であるフードリッジの上面側に配される第１補
強部と、フード前側部で段部を境に第１補強部よりも下
方に突出して形成されて、該段部がフードリッジの前端
に当接した該フードリッジよりも低強度の第２補強部と
で構成したことを特徴とする自動車の車体前部構造。1. A side reinforcing member that forms a closed cross section integrally with the hood is provided on the lower surfaces of the left and right sides of the hood, and the side reinforcing member is a rear side of the hood and extends in the front-rear direction on the upper side of the front of the vehicle body. A first reinforcing portion disposed on the upper surface side of the hood ridge that is a skeletal member, and a front side portion of the hood that is formed so as to project below the first reinforcing portion with a step portion as a boundary, and the step portion is the front end of the hood ridge. And a second reinforcing portion having a strength lower than that of the hood ridge abutting on the hood ridge.
前端に向かって徐々に小さくし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. The vehicle body front structure according to claim 1, wherein the closed cross-sectional area of the second reinforcing portion of the side reinforcing member is gradually reduced toward the front end.
第２補強部の前端部間を連結してフードと一体となって
閉断面を形成する前部補強部材を設け、該前部補強部材
の前後幅寸法を高さ寸法よりも大きく設定したことを特
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 front reinforcing member is provided at a front end of the hood to connect front end portions of second reinforcing portions of left and right side reinforcing members to form a closed cross section integrally with the hood. The vehicle body front structure according to claim 1, wherein the front-rear width dimension of the reinforcing member is set larger than the height dimension.
ジに係止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. The vehicle body front structure according to claim 1, wherein the first reinforcing portion of the side reinforcing member is locked to the hood ridge.
一方、第１補強部の下面に前記係止突起の頭部が挿通可
能な挿通孔と該挿通孔から係止突起の首部と略同一幅で
車両前方に向けて形成されたスリットとからなる係止孔
を設け、これら係止突起と係止孔とで第１補強部をフー
ドリッジに係止したことを特徴とする請求項４に記載の
自動車の車体前部構造。5. An engaging hole is provided on the upper surface of the hood ridge, while an insertion hole through which the head of the engaging projection can be inserted is formed on the lower surface of the first reinforcing portion, and a neck portion of the engaging projection from the inserting hole is substantially the same. The locking hole formed of a slit formed toward the front of the vehicle with a width is provided, and the first reinforcing portion is locked to the hood ridge by the locking projection and the locking hole. The front structure of the vehicle body described.
を取付ける一方、フードに開口部を設けて該開口部から
作業可能な位置で前記フロントフェンダと側部補強部材
の第１補強部とを締結固定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. The front fender is mounted on the upper surface of the hood ridge, while an opening is provided in the hood, and the front fender and the first reinforcing portion of the side reinforcing member are fastened and fixed at a position where work can be performed from the opening. The vehicle body front structure according to any one of claims 1 to 5, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001208127A JP2003019981A (en) | 2001-07-09 | 2001-07-09 | Body front structure of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001208127A JP2003019981A (en) | 2001-07-09 | 2001-07-09 | Body front structure of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003019981A true JP2003019981A (en) | 2003-01-21 |
Family
ID=19044004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001208127A Pending JP2003019981A (en) | 2001-07-09 | 2001-07-09 | Body front structure of automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003019981A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017217992A (en) * | 2016-06-07 | 2017-12-14 | マツダ株式会社 | Vehicle front structure |
| JP2017217991A (en) * | 2016-06-07 | 2017-12-14 | マツダ株式会社 | Vehicle front structure |
| US20220126678A1 (en) * | 2020-10-23 | 2022-04-28 | Hyundai Motor Company | Radiator support upper member assembly |
-
2001
- 2001-07-09 JP JP2001208127A patent/JP2003019981A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017217992A (en) * | 2016-06-07 | 2017-12-14 | マツダ株式会社 | Vehicle front structure |
| JP2017217991A (en) * | 2016-06-07 | 2017-12-14 | マツダ株式会社 | Vehicle front structure |
| US20220126678A1 (en) * | 2020-10-23 | 2022-04-28 | Hyundai Motor Company | Radiator support upper member assembly |
| US11724587B2 (en) * | 2020-10-23 | 2023-08-15 | Hyundai Motor Company | Radiator support upper member assembly |
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