JP2005067347A - Vehicle body front part structure - Google Patents

Vehicle body front part structure Download PDF

Info

Publication number
JP2005067347A
JP2005067347A JP2003298580A JP2003298580A JP2005067347A JP 2005067347 A JP2005067347 A JP 2005067347A JP 2003298580 A JP2003298580 A JP 2003298580A JP 2003298580 A JP2003298580 A JP 2003298580A JP 2005067347 A JP2005067347 A JP 2005067347A
Authority
JP
Japan
Prior art keywords
vehicle body
barrier
load transmission
longitudinal direction
front side
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
Application number
JP2003298580A
Other languages
Japanese (ja)
Inventor
Shunsuke Kanetani
俊助 金谷
Yoshiaki Nishimura
美明 西村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP2003298580A priority Critical patent/JP2005067347A/en
Publication of JP2005067347A publication Critical patent/JP2005067347A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body front part structure which efficiently transmits a barrier load at the time of a front collision to a rocker, improving energy absorbing performance at the time of the front collision, and to reduce reinforcing of a kick part of a front side member. <P>SOLUTION: A block-shaped load transmission member 26 is mounted at the outside of a front end part of the front side member 14. A front end part of the load transmission member 26 is formed into a tapered shape and is arranged on front sides of front wheels 12. A front end part of the rocker 18 is arranged on rear sides of the front wheels 12. Barrier load at the time of the front collision therefore can be transmitted to the load transmission member 26, the front wheels 12 and the rocker 18 in the order. By forming the front end part of the load transmission member 26 into the tapered shape, a wedge effect is obtained to prevent floating of a front end part of a vehicle body front part 10. As a result, moment generated in a kick part 14A of the front side member 14 is suppressed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、車体前部における前輪の内側に車体前後方向を長手方向として配置されかつ当該長手方向の途中部分に車体下方側へ屈曲するキック部を有する左右一対のフロントサイドメンバと、前輪の後方側でかつサイドドアの下縁側に車体前後方向を長手方向として配置された左右一対のロッカと、を含んで構成された車体に適用される車体前部構造に関する。   The present invention includes a pair of left and right front side members that are disposed on the inner side of a front wheel at a front part of a vehicle body with a longitudinal direction in the longitudinal direction of the vehicle body and that have a kick portion that bends downward in the vehicle body at a middle portion in the longitudinal direction. The present invention relates to a vehicle body front structure that is applied to a vehicle body that includes a pair of left and right rockers disposed on the side and a lower edge side of a side door with the vehicle body longitudinal direction as a longitudinal direction.

一般に、車体前部における前輪の内側には、車体前後方向を長手方向とする長尺状の一対のフロントサイドメンバが平行に配設されている。また、キャビン側では、サイドドアの下縁側に車体前後方向を長手方向とする長尺状の一対のロッカが平行に配設されている。ところが、フロントサイドメンバとロッカとは車体幅方向にオフセットして配置されているため、車両が前面衝突した際にバリア荷重(衝突荷重)がフロントサイドメンバからロッカへ円滑に伝達されない。このため、フロントサイドメンバのアッパメンバの荷重負担が大きくなるという問題があった。   In general, a pair of long front side members whose longitudinal direction is the longitudinal direction of the vehicle body are arranged in parallel inside the front wheel at the front portion of the vehicle body. On the cabin side, a pair of long rockers having a longitudinal direction in the longitudinal direction of the vehicle body is disposed in parallel on the lower edge side of the side door. However, since the front side member and the rocker are offset from each other in the vehicle body width direction, the barrier load (collision load) is not smoothly transmitted from the front side member to the rocker when the vehicle collides frontward. For this reason, there was a problem that the load burden of the upper member of the front side member becomes large.

また、車両が前面衝突した際に、車体前部の前端部がバリアによって持ち上げられることがある。この場合、フロントサイドメンバのアッパメンバで狙い通りのエネルギー吸収効果を得ることができず、更にフロントサイドメンバのキック部に比較的大きなモーメントが発生するため、キック部に多くの補強が必要になるという問題があった。   In addition, when the vehicle collides front, the front end of the front part of the vehicle body may be lifted by the barrier. In this case, the desired energy absorption effect cannot be obtained with the upper member of the front side member, and a relatively large moment is generated in the kick portion of the front side member, which requires a lot of reinforcement in the kick portion. There was a problem.

これらの問題を解消し得る技術という観点で先行技術文献を調査した結果、下記特許文献1が摘出された。簡単に説明すると、この公報に開示された技術によれば、左右一対のサイドシルの前端部同士がダッシュボードロアメンバによって相互に結合されており、かかるダッシュボードロアメンバの両端部内側に左右一対のフロントサイドメンバの後端部が結合されている。さらに、左右一対のフロントサイドメンバの前端部には車体幅方向を長手方向とするバンパビームが掛け渡されており、当該バンパビームの両端部の内側部分にクラッシャブルメンバが配設されている。クラッシャブルメンバの後端部には前輪のタイヤの前面と対向する前部プレートが結合されており、これに対応してサイドシルの前端部にも前輪のタイヤの後面と対向する後部プレートが結合されている。   As a result of investigating prior art documents from the viewpoint of technology capable of solving these problems, Patent Document 1 below was extracted. Briefly, according to the technique disclosed in this publication, the front end portions of a pair of left and right side sills are connected to each other by a dashboard lower member, and a pair of left and right sides are disposed inside both end portions of the dashboard lower member. The rear end of the front side member is joined. Further, a bumper beam having a longitudinal direction in the vehicle body width direction is stretched over the front end portions of the pair of left and right front side members, and a crushable member is disposed on the inner side of both end portions of the bumper beam. A front plate facing the front surface of the front wheel tire is coupled to the rear end portion of the crashable member, and a rear plate facing the rear surface of the front wheel tire is also coupled to the front end portion of the side sill. ing.

上記構成によれば、車両が前面衝突すると、その際のバリア荷重(衝突荷重)によって一対のフロントサイドメンバの前端部が圧壊し、それに伴ってバンパビームが車体後方側へ変位する。バンパビームが車体後方側へ変位すると、クラッシャブルメンバを介して前部プレートが前輪のタイヤの前面に当接し、当該タイヤを車体後方側へ押圧する。このため、前輪のタイヤの後面が後部プレートに当接する。その結果、バリア荷重がタイヤを介してサイドシルへ伝達され、所定のエネルギー吸収がなされるというものである。
特開平6−16154号公報
According to the above configuration, when the vehicle collides front, the front end portions of the pair of front side members are crushed by the barrier load (collision load) at that time, and the bumper beam is displaced to the rear side of the vehicle body accordingly. When the bumper beam is displaced to the rear side of the vehicle body, the front plate comes into contact with the front surface of the tire of the front wheel via the crushable member and presses the tire to the rear side of the vehicle body. For this reason, the rear surface of the front tire is in contact with the rear plate. As a result, the barrier load is transmitted to the side sill via the tire, and predetermined energy absorption is performed.
JP-A-6-16154

しかしながら、上記構成による場合、前述した一つ目の問題点については有効と思われるが、二つ目の問題点については依然として解消されない。すなわち、上記先行技術を用いても、前面衝突時に車体前部の前端部の浮き上がり現象を解消することはできず、フロントサイドメンバのアッパメンバによるエネルギー吸収効果は上がらず、キック部に対する補強も軽減することはできない。   However, in the case of the above configuration, the first problem described above seems to be effective, but the second problem is still not solved. That is, even if the above prior art is used, the lifting phenomenon of the front end of the front part of the vehicle body at the time of a frontal collision cannot be eliminated, the energy absorption effect by the upper member of the front side member is not improved, and the reinforcement to the kick part is also reduced. It is not possible.

本発明は上記事実を考慮し、前面衝突時のバリア荷重を効率良くロッカに伝達することができ、しかも前面衝突時におけるエネルギー吸収性能の向上及びフロントサイドメンバのキック部の補強の軽減を図ることができる車体前部構造を得ることが目的である。   In consideration of the above facts, the present invention can efficiently transmit the barrier load at the time of a frontal collision to the rocker, and improve the energy absorption performance at the time of the frontal collision and reduce the reinforcement of the kick portion of the front side member. It is an object to obtain a vehicle body front structure that can be used.

請求項1記載の本発明に係る車体前部構造は、車体前部における前輪の内側に車体前後方向を長手方向として配置されかつ当該長手方向の途中部分に車体下方側へ屈曲するキック部を有する左右一対のフロントサイドメンバと、前輪の後方側でかつサイドドアの下縁側に車体前後方向を長手方向として配置された左右一対のロッカと、を含んで構成された車体に適用される車体前部構造であって、前記フロントサイドメンバの外側でかつ前記前輪の前側に配置され、前面衝突時に作用するバリア荷重を当該前輪に伝達するバリア荷重伝達部材と、車体前部の前端部付近に設けられ、前面衝突時に車体前部の浮き上がりを防止する浮き上がり防止手段と、を有することを特徴としている。   The vehicle body front structure according to the first aspect of the present invention includes a kick portion that is disposed on the inner side of the front wheel at the front portion of the vehicle body with the vehicle body front-rear direction as a longitudinal direction and is bent toward the vehicle body lower side in the middle portion of the longitudinal direction A vehicle body front portion applied to a vehicle body including a pair of left and right front side members, and a pair of left and right rockers disposed on the rear side of the front wheel and on the lower edge side of the side door with the vehicle body longitudinal direction as the longitudinal direction. A barrier load transmitting member that is disposed outside the front side member and on the front side of the front wheel and that transmits a barrier load that acts upon a frontal collision to the front wheel, and is provided in the vicinity of the front end portion of the vehicle body front portion. And a lifting prevention means for preventing the front part of the vehicle body from lifting at the time of a frontal collision.

請求項2記載の本発明に係る車体前部構造は、請求項1記載の発明において、前記浮き上がり防止手段は、前記バリア荷重伝達部材に一体に付加されている、ことを特徴としている。   According to a second aspect of the present invention, the vehicle body front portion structure according to the first aspect of the invention is characterized in that, in the first aspect of the invention, the lifting prevention means is integrally added to the barrier load transmission member.

請求項3記載の本発明に係る車体前部構造は、請求項1又は請求項2記載の発明において、前記バリア荷重伝達手段は、前記フロントサイドメンバの前端部の外側に取り付けられている、ことを特徴としている。   According to a third aspect of the present invention, in the vehicle body front portion structure according to the first or second aspect, the barrier load transmitting means is attached to the outside of the front end portion of the front side member. It is characterized by.

請求項4記載の本発明に係る車体前部構造は、請求項1乃至請求項3のいずれかに記載の発明において、前記バリア荷重伝達手段はブロック状に形成されており、前記浮き上がり防止手段は、当該バリア荷重伝達手段の前端部に設けられたテーパ部によって構成されている、ことを特徴としている。   According to a fourth aspect of the present invention, in the vehicle body front portion structure according to any one of the first to third aspects, the barrier load transmission means is formed in a block shape, and the lift prevention means is It is characterized by comprising a taper portion provided at the front end portion of the barrier load transmission means.

請求項1記載の本発明によれば、フロントサイドメンバの外側でかつ前輪の前側にバリア荷重伝達部材を配置したので、前面衝突時になると、バリア荷重がバリア荷重伝達部材に入力され、続いてバリア荷重伝達部材が前輪の前側部分に当接し、更に前輪の後側部分がロッカの前端部に当接する。従って、前面衝突時のバリア荷重はバリア荷重伝達部材、前輪、ロッカの順に円滑に流れていく。その結果、フロントサイドメンバのキック部よりも前側に位置する部分の荷重負担が軽減される。   According to the first aspect of the present invention, since the barrier load transmission member is disposed outside the front side member and on the front side of the front wheel, the barrier load is input to the barrier load transmission member when a frontal collision occurs, and then the barrier load transmission member The load transmitting member is in contact with the front portion of the front wheel, and the rear portion of the front wheel is in contact with the front end portion of the rocker. Therefore, the barrier load at the time of a frontal collision flows smoothly in the order of the barrier load transmission member, the front wheel, and the rocker. As a result, the load burden on the portion located in front of the kick portion of the front side member is reduced.

加えて、本発明によれば、車体前部の前端部付近に浮き上がり防止手段が設けられているため、前面衝突時に車体前部の浮き上がりが防止される。このため、フロントサイドメンバの途中部分にキック部が設けられていても、フロントサイドメンバのキック部よりも前側の部分で狙い通りのエネルギー吸収効果を得ることができる。さらに、フロントサイドメンバのキック部に比較的大きなモーメントが発生するのを防止することができるため、キック部に対する補強を軽減することができる。   In addition, according to the present invention, since the lifting prevention means is provided in the vicinity of the front end portion of the front portion of the vehicle body, the lifting of the front portion of the vehicle body is prevented during a frontal collision. For this reason, even if the kick part is provided in the middle part of the front side member, the intended energy absorption effect can be obtained in the part ahead of the kick part of the front side member. Furthermore, since it is possible to prevent a relatively large moment from being generated in the kick portion of the front side member, reinforcement to the kick portion can be reduced.

請求項2記載の本発明によれば、浮き上がり防止手段はバリア荷重伝達部材に一体に付加されているため、両者を別個独立に構成する場合に比し、部品点数の削減を図ることができる。   According to the second aspect of the present invention, since the lifting prevention means is integrally added to the barrier load transmission member, the number of parts can be reduced as compared with the case where both are configured independently.

請求項3記載の本発明によれば、バリア荷重伝達手段をフロントサイドメンバの前端部の外側に取り付けたので、前面衝突時になると、まずフロントサイドメンバの前端部分が圧縮塑性変形して所定のエネルギー吸収がなされる。続いて、フロントサイドメンバの前端部分のエネルギー吸収ストロークが所定値に達すると、バリア荷重伝達手段が前輪の前側部分に当接し、更に前輪の後側部分がロッカの前端部に当接する。その結果、前面衝突時のバリア荷重は、バリア荷重伝達部材、前輪、ロッカの順に円滑に流れる。   According to the third aspect of the present invention, since the barrier load transmitting means is attached to the outside of the front end portion of the front side member, the front end portion of the front side member is first compressed and plastically deformed when a frontal collision occurs. Absorption is done. Subsequently, when the energy absorption stroke of the front end portion of the front side member reaches a predetermined value, the barrier load transmission means comes into contact with the front portion of the front wheel, and the rear portion of the front wheel comes into contact with the front end portion of the rocker. As a result, the barrier load at the time of a frontal collision flows smoothly in the order of the barrier load transmission member, the front wheel, and the rocker.

しかも、本発明では、バリア荷重伝達手段をフロントサイドメンバの前端部の外側に取り付けているため、バリア荷重伝達手段を搭載するために新設部材を設定する必要がなく、既存の部材を有効に活用することができる。また、バリア荷重伝達手段を収まり良く車体前部に設置することができる。   Moreover, in the present invention, since the barrier load transmission means is attached to the outside of the front end portion of the front side member, it is not necessary to set a new member for mounting the barrier load transmission means, and the existing member is effectively used. can do. In addition, the barrier load transmission means can be well placed and installed in the front part of the vehicle body.

請求項4記載の本発明によれば、バリア荷重伝達手段がブロック状に形成されており、浮き上がり防止手段はバリア荷重伝達手段の前端部に設けられたテーパ部によって構成されているため、前面衝突時にはテーパ部がバリアの下に差し込まれる(潜り込む)。従って、前面衝突時における車体前部の前端部の浮き上がりを確実に防止することができる。   According to the fourth aspect of the present invention, the barrier load transmission means is formed in a block shape, and the lift prevention means is constituted by a tapered portion provided at the front end portion of the barrier load transmission means. Sometimes the taper is inserted under the barrier. Therefore, it is possible to reliably prevent the front end portion of the front portion of the vehicle body from being lifted during a frontal collision.

以上説明したように、請求項1記載の本発明に係る車体前部構造は、フロントサイドメンバの外側でかつ前輪の前側に配置され、前面衝突時に作用するバリア荷重を当該前輪に伝達するバリア荷重伝達部材と、車体前部の前端部付近に設けられ、前面衝突時に車体前部の浮き上がりを防止する浮き上がり防止手段とを有するので、前面衝突時のバリア荷重を効率良くロッカに伝達することができ、しかも前面衝突時におけるエネルギー吸収性能の向上及びフロントサイドメンバのキック部の補強の軽減を図ることができるという優れた効果を有する。   As described above, the vehicle body front structure according to the first aspect of the present invention is arranged outside the front side member and on the front side of the front wheel, and transmits the barrier load acting at the time of frontal collision to the front wheel. Since it has a transmission member and a lift prevention means that is provided near the front end of the front part of the vehicle body and prevents the front part of the vehicle body from lifting when a frontal collision occurs, the barrier load at the time of the frontal collision can be efficiently transmitted to the rocker. And it has the outstanding effect that improvement of the energy absorption performance at the time of a frontal collision and reduction of reinforcement of the kick part of a front side member can be aimed at.

請求項2記載の本発明に係る車体前部構造は、請求項1記載の発明において、浮き上がり防止手段をバリア荷重伝達部材に一体に付加したので、両者を別個独立に構成する場合に比し、部品点数の削減を図ることができ、その結果、小型軽量化及びコスト削減を図ることができるという優れた効果を有する。   The vehicle body front part structure according to the present invention as defined in claim 2 is the invention according to claim 1, wherein the lifting prevention means is integrally added to the barrier load transmission member, so that both are configured independently. The number of parts can be reduced, and as a result, there is an excellent effect that reduction in size and weight and cost reduction can be achieved.

請求項3記載の本発明に係る車体前部構造は、請求項1又は請求項2記載の発明において、バリア荷重伝達手段をフロントサイドメンバの前端部の外側に取り付けたので、既存の部材の有効活用によるコスト削減並びに良好な車両搭載性の確保を図ることができるという優れた効果を有する。   The vehicle body front structure according to the third aspect of the present invention is the vehicle body front structure according to the first or second aspect, wherein the barrier load transmitting means is attached to the outside of the front end portion of the front side member. It has an excellent effect that it is possible to achieve cost reduction by utilizing and securing good vehicle mountability.

請求項4記載の本発明に係る車体前部構造は、請求項1乃至請求項3のいずれかに記載の発明において、バリア荷重伝達手段をブロック状に形成し、当該バリア荷重伝達手段の前端部に設けられたテーパ部によって浮き上がり防止手段を構成したので、前面衝突時における車体前部の前端部の浮き上がりを確実に防止することができ、その結果、前面衝突時におけるバリア荷重のロッカへの伝達効率をより一層高めることができるという優れた効果を有する。   According to a fourth aspect of the present invention, there is provided a vehicle body front portion structure according to any one of the first to third aspects, wherein the barrier load transmission means is formed in a block shape, and the front end portion of the barrier load transmission means is formed. Since the lift prevention means is configured by the taper provided on the front, the front end of the front part of the vehicle body can be reliably prevented from rising at the time of frontal collision, and as a result, barrier load is transmitted to the rocker at the time of frontal collision. It has the outstanding effect that efficiency can be improved further.

〔第1の実施の形態〕
以下、図1〜図4を用いて、本発明の第1の実施の形態について説明する。なお、これらの図に適宜付した矢印FRは車体前方側を示しており、矢印UPは車体上方側を示しており、矢印OUTは車体幅方向外側を示している。
[First Embodiment]
Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. Note that an arrow FR appropriately attached to these drawings indicates the vehicle body front side, an arrow UP indicates the vehicle body upper side, and an arrow OUT indicates the vehicle body width direction outer side.

図1には、本実施形態に係る車体前部構造の要部の平面図が示されている。また、図2及び図3には、本実施形態に係る車体前部構造を適用したときの前面衝突前後の状態の側面図が示されている。さらに、図4には、本実施形態に係る車体前部構造の要部の斜視図が示されている。   FIG. 1 is a plan view of the main part of the vehicle body front structure according to the present embodiment. 2 and 3 show side views of the state before and after the frontal collision when the vehicle body front structure according to this embodiment is applied. Further, FIG. 4 shows a perspective view of a main part of the vehicle body front part structure according to the present embodiment.

これらの図に示されるように、車体前部10における前輪12の内側には、車体前後方向を長手方向とする左右一対のフロントサイドメンバ14が平行に配設されている。一方、前輪12の後方側でかつ車体フロア16の車体幅方向の端部(図示しないサイドドアの下縁側)には、車体前後方向を長手方向とする左右一対のロッカ18が平行に配設されている。フロントサイドメンバ14及びロッカ18はいずれも閉断面構造を成しており、前者は後者に対して車体幅方向の内側へ所定距離だけオフセットして配置されている。   As shown in these drawings, a pair of left and right front side members 14 whose longitudinal direction is the longitudinal direction of the vehicle body are disposed in parallel inside the front wheel 12 in the vehicle body front portion 10. On the other hand, a pair of left and right rockers 18 whose longitudinal direction is the longitudinal direction of the vehicle body are disposed in parallel at the rear side of the front wheel 12 and at the end of the vehicle body floor 16 in the vehicle body width direction (the lower edge side of the side door not shown). ing. Both the front side member 14 and the rocker 18 have a closed cross-sectional structure, and the former is arranged offset by a predetermined distance inward in the vehicle body width direction with respect to the latter.

さらに、図2に示されるように、上記フロントサイドメンバ14の長手方向の途中部分(前輪12の後端付近の位置)には、車両下方側へ屈曲するキック部14Aが形成されている。フロントサイドメンバ14は、キック部14Aを境にしてアッパ部分14Bとロア部分14Cとに分かれている。アッパ部分14Bは、前輪12の内側上部を通ってラジエータサポート20の縦柱20A付近にまで延出されている。なお、ラジエータサポート20は略矩形枠状に構成されており、フロントバンパ22の内側に配置されている。一方、ロア部分14Cは、キック部14Aから屈曲垂下された後、フロントフェンダパネル24の下縁付近から車体フロア16側へ延出されている。   Further, as shown in FIG. 2, a kick portion 14 </ b> A that bends toward the vehicle lower side is formed in the middle portion of the front side member 14 in the longitudinal direction (position near the rear end of the front wheel 12). The front side member 14 is divided into an upper portion 14B and a lower portion 14C with a kick portion 14A as a boundary. The upper portion 14 </ b> B extends to the vicinity of the vertical column 20 </ b> A of the radiator support 20 through the inner upper portion of the front wheel 12. The radiator support 20 has a substantially rectangular frame shape, and is disposed inside the front bumper 22. On the other hand, the lower portion 14C is bent and suspended from the kick portion 14A, and then extends from the vicinity of the lower edge of the front fender panel 24 to the vehicle body floor 16 side.

ここで、上述したフロントサイドメンバ14の先端部の外側には、「バリア荷重伝達部材」としてのブロック形状の荷重伝達部材26が配設されている。詳細には、図4に示されるように、荷重伝達部材26は、台形ブロック形状の本体部26Aと、この本体部26Aの内側に設けられたプレート状の取付部26Bとによって構成されている。取付部26Bの上縁部は、フロントサイドメンバ14の先端部の外側面にボルト28で固定されている。また、取付部26Bの前縁部は、ラジエータサポート20の縦柱20Aの外側面にボルト28で固定されている。   Here, a block-shaped load transmission member 26 as a “barrier load transmission member” is disposed outside the front end portion of the front side member 14 described above. Specifically, as shown in FIG. 4, the load transmission member 26 includes a trapezoidal block-shaped main body portion 26 </ b> A and a plate-like attachment portion 26 </ b> B provided inside the main body portion 26 </ b> A. The upper edge portion of the attachment portion 26 </ b> B is fixed to the outer surface of the front end portion of the front side member 14 with a bolt 28. Further, the front edge portion of the attachment portion 26 </ b> B is fixed to the outer surface of the vertical column 20 </ b> A of the radiator support 20 with a bolt 28.

また、上記構成の荷重伝達部材26は、平面視で前輪12の前側に配置されており、前輪12を挟んでロッカ18と対向するように配置されている。換言すれば、平面視及び側面視のいずれから見た場合においても、ロッカ18、前輪12、荷重伝達部材26の三者が車体前後方向に一直線上に配列されるように、荷重伝達部材26の張り出し量及び高さ方向の位置が設定されている。   The load transmission member 26 having the above-described configuration is disposed on the front side of the front wheel 12 in a plan view, and is disposed so as to face the rocker 18 with the front wheel 12 interposed therebetween. In other words, when viewed from either a plan view or a side view, the load transmission member 26 is arranged so that the rocker 18, the front wheel 12, and the load transmission member 26 are arranged in a straight line in the longitudinal direction of the vehicle body. The amount of overhang and the position in the height direction are set.

さらに、上記構成の荷重伝達部材26の前端部には、「浮き上がり防止手段」としてのテーパ部30が形成されている。テーパ部30の傾斜角度は、前面衝突時にバリア32(図3参照)の下側へ潜り込み或いは楔として差し込まれて車体前部10の浮き上がりを防止できる程度の角度に設定されている。   Further, a taper portion 30 as “lifting prevention means” is formed at the front end portion of the load transmitting member 26 having the above-described configuration. The inclination angle of the taper portion 30 is set to such an angle that the vehicle body front portion 10 can be prevented from being lifted by being submerged or inserted as a wedge under the barrier 32 (see FIG. 3) at the time of a frontal collision.

次に、本実施形態の作用並びに効果について説明する。   Next, the operation and effect of this embodiment will be described.

図2に示される状態が、前面衝突する前の状態である。この状態のときには、前輪12の前側には荷重伝達部材26が近接した状態で配置されており、又前輪12の後側にはロッカ18の前端部が近接した状態で配置されている。そして、平面視及び側面視のいずれから見ても、荷重伝達部材26、前輪12、ロッカ18が車体前後方向に一直線上に配置されている。   The state shown in FIG. 2 is a state before a frontal collision. In this state, the load transmitting member 26 is disposed in the proximity of the front side of the front wheel 12, and the front end portion of the rocker 18 is disposed in the proximity of the rear side of the front wheel 12. The load transmitting member 26, the front wheel 12, and the rocker 18 are arranged in a straight line in the longitudinal direction of the vehicle body when viewed from either a plan view or a side view.

この状態から前面衝突時になると、図3に示されるように、その際のバリア荷重F1はフロントバンパ22(のバンパリインフォースメント)を介して左右一対のフロントサイドメンバ14の先端部に入力される。このため、フロントサイドメンバ14の先端部は圧縮塑性変形し、当該先端部に取り付けられた荷重伝達部材26が車体後方側へ変位して前輪12の前側部分に当接する。このため、前輪12が車体後方側へ変位し、ロッカ18の前端部に当接される。これにより、前面衝突時のバリア荷重F1は荷重伝達部材26、前輪12、ロッカ18の順に円滑かつ迅速に流れていく。従って、本実施形態によれば、前面衝突時のバリア荷重F1を効率良くロッカ18に伝達することができる。よって、従来構造に比し、フロントサイドメンバ14のキック部14Aよりも前側に位置するアッパ部分14Bの荷重負担を軽減させることができる。   When a frontal collision occurs from this state, as shown in FIG. 3, the barrier load F1 at that time is input to the front ends of the pair of left and right front side members 14 via the front bumper 22 (its bumper reinforcement). For this reason, the front end portion of the front side member 14 is compressed and plastically deformed, and the load transmitting member 26 attached to the front end portion is displaced rearward of the vehicle body and comes into contact with the front portion of the front wheel 12. For this reason, the front wheel 12 is displaced rearward of the vehicle body and is brought into contact with the front end portion of the rocker 18. Thereby, the barrier load F1 at the time of a frontal collision flows smoothly and quickly in the order of the load transmission member 26, the front wheel 12, and the rocker 18. Therefore, according to this embodiment, the barrier load F1 at the time of a frontal collision can be efficiently transmitted to the rocker 18. Therefore, as compared with the conventional structure, it is possible to reduce the load burden on the upper portion 14B located in front of the kick portion 14A of the front side member 14.

加えて、本実施形態によれば、荷重伝達部材26の前端部にテーパ部30を設定したので、前面衝突時にはいち早くテーパ部30がバリア32の下側へ差し込まれる。これにより、テーパ部30にはバリア32から車両下方側への分力F2が発生し、荷重伝達部材26を車両下方側へ押し下げる。従って、前面衝突時に車体前部10の前端側が浮き上がるのを防止することができる。その結果、フロントサイドメンバ14のキック部14Aに比較的大きなモーメントが発生するのを防止することができる。これにより、キック部14Aに対する補強を軽減することができる。また、車体前部10の浮き上がりを防止することができるため、フロントサイドメンバ14のアッパ部分14Bで、狙い通りのエネルギー吸収効果を得ることができる。   In addition, according to this embodiment, since the tapered portion 30 is set at the front end portion of the load transmitting member 26, the tapered portion 30 is quickly inserted into the lower side of the barrier 32 at the time of a frontal collision. As a result, a component force F2 from the barrier 32 to the vehicle lower side is generated in the tapered portion 30, and the load transmitting member 26 is pushed down to the vehicle lower side. Therefore, it is possible to prevent the front end side of the vehicle body front portion 10 from being lifted during a frontal collision. As a result, it is possible to prevent a relatively large moment from being generated in the kick portion 14A of the front side member 14. Thereby, reinforcement with respect to the kick part 14A can be reduced. Further, since the vehicle body front portion 10 can be prevented from being lifted, the intended energy absorption effect can be obtained at the upper portion 14B of the front side member 14.

総じて言えば、本実施形態に係る車体前部構造によれば、前面衝突時のバリア荷重F1を効率良くロッカ18に伝達することができ、しかも前面衝突時におけるフロントサイドメンバ14によるエネルギー吸収性能の向上及びフロントサイドメンバ14のキック部14Aの補強の軽減を図ることができる。   Generally speaking, according to the vehicle body front structure according to the present embodiment, the barrier load F1 at the time of the frontal collision can be efficiently transmitted to the rocker 18, and the energy absorption performance of the front side member 14 at the time of the frontal collision is improved. Improvement and reduction of reinforcement of the kick part 14A of the front side member 14 can be aimed at.

また、本実施形態に係る車体前部構造では、荷重伝達部材26の先端部にテーパ部30を設けることにより、浮き上がり防止手段をバリア荷重伝達部材に一体に付加したので、両者を別個独立に構成する場合に比し、部品点数の削減及び組付工数の削減を図ることができる。その結果、本実施形態によれば、小型軽量化及びコスト削減を図ることができる。   Further, in the vehicle body front structure according to the present embodiment, by providing the tapered portion 30 at the tip of the load transmission member 26, the lifting prevention means is integrally added to the barrier load transmission member. Compared with the case where it does, reduction of a number of parts and reduction of an assembly man-hour can be aimed at. As a result, according to the present embodiment, reduction in size and weight and cost reduction can be achieved.

さらに、本実施形態に係る車体前部構造では、荷重伝達部材26をフロントサイドメンバの前端部の外側に取り付けたので、荷重伝達部材26を搭載するために新設部材を設定する必要がなく、既存の部材(フロントサイドメンバ14やラジエータサポート20)を有効に活用することができる。また、荷重伝達部材26を収まり良く車体前部10に設置することができる。その結果、本実施形態によれば、既存の部材の有効活用によるコスト削減並びに良好な車両搭載性の確保を図ることができる。   Furthermore, in the vehicle body front part structure according to the present embodiment, since the load transmission member 26 is attached to the outside of the front end portion of the front side member, there is no need to set a new member in order to mount the load transmission member 26. These members (the front side member 14 and the radiator support 20) can be used effectively. In addition, the load transmission member 26 can be installed in the vehicle body front portion 10 with good fit. As a result, according to this embodiment, it is possible to achieve cost reduction and good vehicle mountability by effectively utilizing existing members.

また、本実施形態に係る車体前部構造では、ブロック状の荷重伝達部材26の前端部に、前面衝突時にバリア32の下側へ差し込まれて車体前部10の浮き上がりを防止するテーパ部30を設けたので、前面衝突時における車体前部10の前端部の浮き上がりを確実に防止することができる。その結果、本実施形態によれば、前面衝突時におけるバリア荷重のロッカ18への伝達効率をより一層高めることができる。   Further, in the vehicle body front portion structure according to the present embodiment, the tapered portion 30 that is inserted below the barrier 32 at the time of a frontal collision and prevents the vehicle body front portion 10 from being lifted at the front end portion of the block-shaped load transmission member 26. Since it is provided, it is possible to reliably prevent the front end portion of the vehicle body front portion 10 from being lifted during a frontal collision. As a result, according to this embodiment, the transmission efficiency of the barrier load to the rocker 18 at the time of a frontal collision can be further increased.

〔第2の実施の形態〕
次に、図5を用いて、本発明の第2の実施の形態について説明する。なお、前述した第1の実施の形態と同一構成部分には、同一番号を付してその説明を省略する。
[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. Note that the same components as those in the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.

この第2の実施の形態では、「バリア荷重伝達部材」としての左右一対の荷重伝達部材40を車体幅方向を長手方向とするクロスメンバ42で相互に連結した点に特徴がある。なお、クロスメンバ42は、広義には、左右一対の荷重伝達部材40を連結する「連結部材」として把握される要素であり、左右一対の荷重伝達部材40間に既存のクロスメンバ又はクロスメンバに相当する部材が存在すればそれを使用すればよく、既存のクロスメンバ又はクロスメンバに相当する部材が存在しない場合でクロスメンバを新設可能な場合は当該クロスメンバを新設すればよい。   The second embodiment is characterized in that a pair of left and right load transmission members 40 as “barrier load transmission members” are connected to each other by a cross member 42 having a longitudinal direction in the vehicle body width direction. The cross member 42 is an element that is grasped as a “connecting member” that connects the pair of left and right load transmitting members 40 in a broad sense. If there is a corresponding member, it may be used. If there is no existing cross member or a member corresponding to the cross member and a cross member can be newly provided, the cross member may be newly provided.

上記構成によれば、荷重伝達部材40を前輪12の前側にのみ配置すればよいので、即ちフロントサイドメンバ14からの張り出し分が不要となるので、その分、荷重伝達部材40を小型軽量化することができる。   According to the above configuration, the load transmitting member 40 only needs to be disposed on the front side of the front wheel 12, that is, the projecting portion from the front side member 14 is not required, and accordingly, the load transmitting member 40 is reduced in size and weight. be able to.

〔実施の形態の補足説明〕
上述した第1及び第2の各実施形態では、バリア荷重伝達部材と浮き上がり防止手段とを一体に形成した(一部品で構成した)が、これに限らず、別個独立に構成してもよい。
[Supplementary explanation of the embodiment]
In each of the first and second embodiments described above, the barrier load transmission member and the floating prevention means are integrally formed (configured as a single component), but the present invention is not limited thereto, and may be configured separately.

また、上述した第1の実施形態では、荷重伝達部材26をフロントサイドメンバ14及びラジエータサポート20の縦柱20Aにボルト28で取り付ける構成を採ったが、これに限らず、他の部位にバリア荷重伝達部材を取り付ける構成を採ってもよい。さらに、必ずしもバリア荷重伝達手段を板金部品に取り付ける必要はなく、バンパカバーやフェンダライナ等の樹脂部品にバリア荷重伝達部材を固定する構成を採ることも可能である。   In the first embodiment described above, the load transmission member 26 is attached to the front side member 14 and the vertical column 20A of the radiator support 20 with the bolt 28. However, the present invention is not limited to this, and the barrier load is applied to other parts. You may take the structure which attaches a transmission member. Furthermore, it is not always necessary to attach the barrier load transmission means to the sheet metal part, and it is possible to adopt a configuration in which the barrier load transmission member is fixed to a resin part such as a bumper cover or a fender liner.

さらに、上述した第1及び第2の各実施形態では、荷重伝達部材26、40の前端部に側面視で台形状のテーパ部30を設ける構成を採ったが、これに限らず、他の形状を採用してもよい。例えば、バリア荷重伝達部材の前端部を階段形状にしてもよい。   Furthermore, in each of the first and second embodiments described above, the configuration in which the trapezoidal tapered portion 30 is provided at the front end portion of the load transmitting members 26 and 40 in a side view is not limited thereto, but other shapes are also possible. May be adopted. For example, the front end portion of the barrier load transmission member may be stepped.

また、上述した第1及び第2の各実施形態では、組付状態でバリア荷重伝達部材26、40、前輪12、ロッカ18の三者を一直線上に配列する構成を採ったが、バリア荷重の伝達時に三者が一直線上に配列される構成であればよい。例えば、荷重伝達部材26、40の前端部にはテーパ部30が設定されていることから、前面衝突時にはテーパ部30によって車体前部10の前端部が車体下方側へ引っ張られる。この挙動に注目し、組付時には荷重伝達部材26、40をロッカ18よりも若干高めに設定しておき、前面衝突時にテーパ部30によって車体前部10の前端部が車体下方側へ若干下がることにより、三者が一直線上に配列される構成を採ってもよい。   Further, in each of the first and second embodiments described above, a configuration in which the three members of the barrier load transmission members 26 and 40, the front wheel 12, and the rocker 18 are arranged in a straight line in the assembled state is adopted. What is necessary is just the structure by which three parties are arranged on a straight line at the time of transmission. For example, since the taper portion 30 is set at the front end portions of the load transmitting members 26 and 40, the front end portion of the vehicle body front portion 10 is pulled to the vehicle body lower side by the taper portion 30 at the time of a frontal collision. Paying attention to this behavior, the load transmitting members 26 and 40 are set slightly higher than the rocker 18 during assembly, and the front end portion of the vehicle body front portion 10 is slightly lowered to the vehicle body lower side by the taper portion 30 at the time of a frontal collision. Therefore, a configuration may be adopted in which the three parties are arranged in a straight line.

第1の実施の形態に係る車体前部構造の要部を示す平面図である。It is a top view which shows the principal part of the vehicle body front part structure which concerns on 1st Embodiment. 第1の実施の形態に係る車体前部構造の要部を示す側面図である。It is a side view which shows the principal part of the vehicle body front part structure which concerns on 1st Embodiment. バリアに前面衝突した際の作用・効果を説明するための図2に対応する側面図である。It is a side view corresponding to FIG. 2 for demonstrating the effect | action and effect at the time of front collision with a barrier. 図1に示される車体前部構造の要部を示す斜視図である。It is a perspective view which shows the principal part of the vehicle body front part structure shown by FIG. 第2の実施の形態に係る車体前部構造の要部を示す図1に対応する平面図である。It is a top view corresponding to FIG. 1 which shows the principal part of the vehicle body front part structure concerning 2nd Embodiment.

符号の説明Explanation of symbols

10 車体前部
12 前輪
14 フロントサイドメンバ
14A キック部
18 ロッカ
26 荷重伝達部材(バリア荷重伝達部材)
30 テーパ部(浮き上がり防止手段)
32 バリア
40 荷重伝達部材(バリア荷重伝達部材)
DESCRIPTION OF SYMBOLS 10 Car body front part 12 Front wheel 14 Front side member 14A Kick part 18 Rocker 26 Load transmission member (barrier load transmission member)
30 Tapered part (lifting prevention means)
32 barrier 40 load transmission member (barrier load transmission member)

Claims (4)

車体前部における前輪の内側に車体前後方向を長手方向として配置されかつ当該長手方向の途中部分に車体下方側へ屈曲するキック部を有する左右一対のフロントサイドメンバと、前輪の後方側でかつサイドドアの下縁側に車体前後方向を長手方向として配置された左右一対のロッカと、を含んで構成された車体に適用される車体前部構造であって、
前記フロントサイドメンバの外側でかつ前記前輪の前側に配置され、前面衝突時に作用するバリア荷重を当該前輪に伝達するバリア荷重伝達部材と、
車体前部の前端部付近に設けられ、前面衝突時に車体前部の浮き上がりを防止する浮き上がり防止手段と、
を有することを特徴とする車体前部構造。
A pair of left and right front side members that have a kick portion that is disposed on the inner side of the front wheel in the front portion of the vehicle body with the longitudinal direction of the vehicle body as a longitudinal direction and that bends downward in the vehicle body in the middle of the longitudinal direction, and a rear side and a side of the front wheel A vehicle body front structure applied to a vehicle body configured to include a pair of left and right rockers disposed on the lower edge side of the door with the vehicle body longitudinal direction as the longitudinal direction,
A barrier load transmitting member that is disposed outside the front side member and on the front side of the front wheel, and transmits a barrier load acting upon a frontal collision to the front wheel;
A lift prevention means provided near the front end of the front part of the vehicle body to prevent the front part of the vehicle body from being lifted during a frontal collision;
The vehicle body front part structure characterized by having.
前記浮き上がり防止手段は、前記バリア荷重伝達部材に一体に付加されている、
ことを特徴とする請求項1記載の車体前部構造。
The lifting prevention means is integrally added to the barrier load transmission member.
The vehicle body front part structure according to claim 1.
前記バリア荷重伝達手段は、前記フロントサイドメンバの前端部の外側に取り付けられている、
ことを特徴とする請求項1又は請求項2記載の車体前部構造。
The barrier load transmission means is attached to the outside of the front end portion of the front side member,
The vehicle body front part structure according to claim 1 or 2, wherein
前記バリア荷重伝達手段はブロック状に形成されており、
前記浮き上がり防止手段は、当該バリア荷重伝達手段の前端部に設けられたテーパ部によって構成されている、
ことを特徴とする請求項1乃至請求項3のいずれかに記載の車体前部構造。
The barrier load transmission means is formed in a block shape,
The lifting prevention means is constituted by a tapered portion provided at the front end of the barrier load transmission means.
The vehicle body front part structure according to any one of claims 1 to 3, wherein
JP2003298580A 2003-08-22 2003-08-22 Vehicle body front part structure Pending JP2005067347A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003298580A JP2005067347A (en) 2003-08-22 2003-08-22 Vehicle body front part structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003298580A JP2005067347A (en) 2003-08-22 2003-08-22 Vehicle body front part structure

Publications (1)

Publication Number Publication Date
JP2005067347A true JP2005067347A (en) 2005-03-17

Family

ID=34404042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003298580A Pending JP2005067347A (en) 2003-08-22 2003-08-22 Vehicle body front part structure

Country Status (1)

Country Link
JP (1) JP2005067347A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008273379A (en) * 2007-04-27 2008-11-13 Toyota Motor Corp Vehicle body structure
JP2014104900A (en) * 2012-11-28 2014-06-09 Toyota Motor Corp Front structure of vehicle
US8801083B2 (en) 2011-12-13 2014-08-12 Toyota Jidosha Kabushiki Kaisha Front vehicle body structure
FR3001932A1 (en) * 2013-02-14 2014-08-15 Peugeot Citroen Automobiles Sa Front part for body of motor vehicle, has wedge with part directed forwards to be run by stopper during frontal impact standardized for weak covering and to be pushed toward wheel
US9061713B2 (en) 2012-12-07 2015-06-23 Toyota Jidosha Kabushiki Kaisha Vehicle body front structure
US9233714B2 (en) 2012-09-14 2016-01-12 Toyota Jidosha Kabushiki Kaisha Vehicle body front portion structure
US9415806B2 (en) 2014-12-22 2016-08-16 Toyota Jidosha Kabushiki Kaisha Vehicle front portion structure

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008273379A (en) * 2007-04-27 2008-11-13 Toyota Motor Corp Vehicle body structure
US8801083B2 (en) 2011-12-13 2014-08-12 Toyota Jidosha Kabushiki Kaisha Front vehicle body structure
US9221412B2 (en) 2011-12-13 2015-12-29 Toyota Jidosha Kabushiki Kaisha Front vehicle body structure
US9233714B2 (en) 2012-09-14 2016-01-12 Toyota Jidosha Kabushiki Kaisha Vehicle body front portion structure
DE112013004484B4 (en) 2012-09-14 2019-05-16 Toyota Jidosha Kabushiki Kaisha Structure of a front vehicle body section
JP2014104900A (en) * 2012-11-28 2014-06-09 Toyota Motor Corp Front structure of vehicle
US9061713B2 (en) 2012-12-07 2015-06-23 Toyota Jidosha Kabushiki Kaisha Vehicle body front structure
US9446724B2 (en) 2012-12-07 2016-09-20 Toyota Jidosha Kabushiki Kaisha Vehicle body front structure
FR3001932A1 (en) * 2013-02-14 2014-08-15 Peugeot Citroen Automobiles Sa Front part for body of motor vehicle, has wedge with part directed forwards to be run by stopper during frontal impact standardized for weak covering and to be pushed toward wheel
US9415806B2 (en) 2014-12-22 2016-08-16 Toyota Jidosha Kabushiki Kaisha Vehicle front portion structure

Similar Documents

Publication Publication Date Title
JP4486673B2 (en) Body structure
JP4286884B2 (en) Auto body structure
JP4875559B2 (en) Body frame structure
JP2007038839A (en) Rear part car body structure for vehicle
CN1861460B (en) Vehicle floor structure
JP2009006903A (en) Vehicle body structure for automobile
WO2016125745A1 (en) End structure for vehicle
JP6248959B2 (en) Vehicle skeleton structure
JP2005067347A (en) Vehicle body front part structure
JP6027448B2 (en) Body front structure
JP5630615B2 (en) Vehicle body structure
US8042834B2 (en) Front structure of vehicle
CN101708737B (en) Front rail structure of automobile body
JP2008018901A (en) Vehicular front structure
JP5027684B2 (en) Body front structure
JP4496956B2 (en) Body front structure
CN210941967U (en) Vehicle frame beam assembly
JP4477978B2 (en) Reinforcing member mounting structure for securing a living space in the event of a collision
CN216232561U (en) Rear auxiliary frame structure, tie rod mounting portion and vehicle
JP5083650B2 (en) Structure for preventing rolling-in of vehicles
JP2009107590A (en) Vehicle front body structure of automobile
JP2008308105A (en) Vehicle body structure of automobile
JP6103084B2 (en) Vehicle front structure
JP2020050278A (en) Cab structure
JP5829886B2 (en) Bumper structure