JP4876822B2 - Rear bumper structure of automobile - Google Patents

Rear bumper structure of automobile Download PDF

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JP4876822B2
JP4876822B2 JP2006262229A JP2006262229A JP4876822B2 JP 4876822 B2 JP4876822 B2 JP 4876822B2 JP 2006262229 A JP2006262229 A JP 2006262229A JP 2006262229 A JP2006262229 A JP 2006262229A JP 4876822 B2 JP4876822 B2 JP 4876822B2
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rear end
extending
beam portion
closed cross
section
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JP2008080924A (en
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雅博 朝日
幸治 松下
勇 木▲崎▼
隆行 中前
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Mazda Motor Corp
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Mazda Motor Corp
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この発明は、リヤエンドパネルの後方において車幅方向に延びるビーム部を有するバンパレインを備えると共に、リヤエンドパネルのゲート開口下端に対応して閉断面部が形成されたような自動車のリヤバンパ構造に関する。   The present invention relates to a rear bumper structure for an automobile having a bumper rain having a beam portion extending in the vehicle width direction behind a rear end panel and having a closed cross section formed corresponding to a lower end of a gate opening of the rear end panel.

従来、上述例の自動車のリヤバンパ構造としては、特許文献１に開示された構造がある。
すなわち、車体後部を形成するリヤエンドパネルを設け、このリヤエンドパネルの後部に左右一対のクラッシュカン（または取付けブラケット）を介して車幅方向に延びるビーム部を取付けて、このビーム部とクラッシュカンとでバンパレインを構成する一方、上述のリヤエンドパネルのゲート開口下端と対応する部位に閉断面部を形成し、リヤエンド部の剛性向上を図ったものである。 Conventionally, as a rear bumper structure of the automobile of the above-described example, there is a structure disclosed in Patent Document 1.
That is, a rear end panel that forms the rear portion of the vehicle body is provided, and a beam portion that extends in the vehicle width direction is attached to the rear portion of the rear end panel via a pair of left and right crash cans (or mounting brackets). While constituting the bumper rain, a closed cross section is formed at a portion corresponding to the lower end of the gate opening of the above-mentioned rear end panel to improve the rigidity of the rear end portion.

上述の閉断面部はその後端がリヤエンドパネルに対するバンパレインの取付け部（いわゆるリヤエンドパネルの基準面）よりも後方に位置するものである。
ここで、リヤエンド部の剛性をさらに向上させるためには、上述の閉断面部をより一層大きく形成するとよいが、リヤエンド部の上側にはゲート開口が位置し、下側にはバンパフェース取付け部が存在する関係上、閉断面部を大きくすることに対して制約を受ける。 The closed cross-section described above has a rear end located behind a bumper rain attachment portion (so-called rear end panel reference surface) with respect to the rear end panel.
Here, in order to further improve the rigidity of the rear end portion, it is preferable to make the above-mentioned closed cross-section portion larger, but the gate opening is located above the rear end portion, and the bumper face mounting portion is located below. Due to the existing relationship, there is a restriction on increasing the closed cross section.

一方、特許文献２に開示されているように、バンパビーム（ビーム部と同意）の車幅方向中央部に該バンパビームの前後幅全域にわたって上方に延びる門形状の延出部を設け、バンパビームの後突荷重の受け面拡大を図った構造もある。
この従来構造によれば、上記延出部により後突荷重の受け面の上下幅を大きく成すことができ、後突に対して有利となる。 On the other hand, as disclosed in Patent Document 2, a bumper beam (agreeing with the beam portion) is provided with a gate-shaped extending portion extending upward in the front-rear width of the bumper beam at the center in the vehicle width direction. There is also a structure designed to expand the load receiving surface.
According to this conventional structure, the vertical width of the receiving surface for the rear impact load can be increased by the extending portion, which is advantageous for the rear impact.

そこで、リヤエンドパネルの閉断面部を大きくして、リヤエンド部の剛性向上を図ると共に、延出部を設けることにより、バンパビームの後突荷重の受け面拡大を図る場合、上記特許文献１の構造と、特許文献２の構造とを組合わせることが考えられるが、この場合には、リヤエンドパネルの閉断面部と延出部とが干渉するという問題点があった。
特開２００６−４４３０８号公報 特開２００３−２５２１３４号公報 Accordingly, when the rear end panel is enlarged to increase the rigidity of the rear end portion and the extension portion is provided to increase the receiving surface of the bumper beam's rear impact load, However, in this case, there is a problem that the closed cross section of the rear end panel interferes with the extended portion.
JP 2006-44308 A JP 2003-252134 A

そこで、この発明は、リヤエンドパネルの閉断面部を、その後端がバンパレインのビーム部前端より後方に位置するように構成し、バンパレインのビーム部に車幅方向に渡って形成され、かつビーム部後端から上方に延出して、その前端がビーム部の前端から間隔を隔てたビーム部上面部に固定される延出部を設けることで、リヤエンドパネルの閉断面部の大型化と、ビーム部の受け面拡大との両立を図ることができる自動車のリヤバンパ構造の提供を目的とする。   Accordingly, the present invention is configured such that the closed cross-section portion of the rear end panel is configured such that the rear end thereof is located behind the front end of the beam portion of the bumper rain, is formed in the beam portion of the bumper rain across the vehicle width direction, and By providing an extending portion that extends upward from the end and is fixed to the upper surface of the beam portion with the front end spaced from the front end of the beam portion, the rear end panel can be enlarged in size, and the beam portion The purpose is to provide a rear bumper structure for an automobile that can be compatible with expansion of the receiving surface.

この発明による自動車のリヤバンパ構造は、リヤエンドパネルの後方を車幅方向に延びるビーム部を有するバンパレインと、リヤエンドパネルのゲート開口下端に対応して形成され、その後端がバンパレインのリヤエンドパネル取付部より後方に位置し、かつバンパレインのビーム部前端より後方に位置する閉断面部と、上記バンパレインのビーム部に車幅方向に渡って設けられ、ビーム部後端から上方に延出し、前端がビーム部の前端から間隔を隔ててビーム部上面部に固定される延出部と、を備え、上記延出部は、ビーム部後端から垂直上方に延びる垂直壁部と、該垂直壁部の上端から前方下方に傾斜して延びる傾斜壁部とを備えたものである。
この構成によれば、リヤエンドパネルの閉断面部を、その後端がバンパレインのビーム部前端よりも後方に位置するように構成したので、リヤエンドパネルの閉断面部の大型化を図って、リヤエンド部の剛性向上を図ることができる。 The rear bumper structure of an automobile according to the present invention is formed with a bumper rain having a beam portion extending in the vehicle width direction behind the rear end panel and a gate opening lower end of the rear end panel, and a rear end behind the rear end panel mounting portion of the bumper rain. And a closed cross-section portion located behind the front end of the beam portion of the bumper rain, and the beam portion of the bumper rain over the vehicle width direction, extending upward from the rear end of the beam portion, and the front end of the beam portion An extension portion fixed to the upper surface portion of the beam portion at a distance from the front end , the extension portion extending vertically upward from the rear end of the beam portion, and forward from the upper end of the vertical wall portion And an inclined wall portion extending inclinedly downward .
According to this configuration, the closed cross-section portion of the rear end panel is configured so that the rear end thereof is located behind the front end of the beam portion of the bumper rain. Therefore, the closed cross-section portion of the rear end panel is increased in size, The rigidity can be improved.

また、上記ビーム部には、車幅方向に渡って形成され、かつビーム部後端から上方に延出して、その前端がビーム部の前端から間隔を隔ててビーム部上面部に固定される延出部を設けたので、この延出部によりビーム部の受け面拡大を図って、後突に対して有利となる。
要するに、リヤエンドパネルの閉断面部の大型化と、ビーム部の受け面拡大との両立を図ることができる。 Further, the beam portion is formed in the vehicle width direction and extends upward from the rear end of the beam portion, and the front end is fixed to the upper surface portion of the beam portion at a distance from the front end of the beam portion. Since the projecting portion is provided, the extension of the receiving surface of the beam portion by this extending portion is advantageous for the rear impact.
In short, it is possible to achieve both the enlargement of the closed section of the rear end panel and the expansion of the receiving surface of the beam portion.

しかも、上記延出部は、ビーム部後端から垂直上方に延びる垂直壁部と、該垂直壁部の上端から前方下方に傾斜して延びる傾斜壁部とを備えたものであるから、延出部の垂直壁部に作用する後突荷重を、上述の傾斜壁部で効率的に支えることができる。 Moreover, the extending portion includes a vertical wall portion extending from the beam rear end vertically upward, since those having an inclined wall portion extending obliquely forwardly downwardly from the upper end of the vertical wall portion, extending The rear impact load acting on the vertical wall portion of the portion can be efficiently supported by the above-described inclined wall portion.

この発明の一実施態様においては、上記閉断面部と上記延出部の傾斜壁部との間に形成され、軽度の後突時において延出部の前方への変位を許容する前後方向の空間部を備えたものである。
上記構成によれば、上述の空間部を設けたことにより、軽度の後突時において車体側の損傷を防止することができる。 In one embodiment of the present invention, a space in the front-rear direction that is formed between the closed cross-section portion and the inclined wall portion of the extension portion and allows forward displacement of the extension portion at the time of a slight rear collision. It has a part.
According to the above configuration, by providing the above-described space portion, it is possible to prevent damage on the vehicle body side during a slight rear collision.

この発明の一実施態様においては、上記延出部は、その前端がリヤエンドパネルの閉断面部の後端より前方部位において上記ビーム部上面部に固定される固定部を備えたものである。
上記構成によれば、延出部の前端がリヤエンドパネルの閉断面部の後端よりも前方部位に固定されるので、該延出部とリヤエンドパネルの閉断面部との接触を回避しつつ、延出部の剛性を向上させることができる。 In one embodiment of the present invention, the extension portion includes a fixing portion whose front end is fixed to the upper surface portion of the beam portion at a position ahead of the rear end of the closed cross section of the rear end panel.
According to the above configuration, since the front end of the extending portion is fixed to the front part of the rear end portion of the closed end portion of the rear end panel, while avoiding contact between the extending portion and the closed end portion of the rear end panel, The rigidity of the extending part can be improved.

この発明の一実施態様においては、上記閉断面部の下面が後上がりに傾斜するように形成された傾斜部を備えたものである。
上記構成によれば、上記閉断面部の下面に上述の傾斜部を設けたので、延出部の前端をさらにビーム部の前方位置に固定することができ、これにより該延出部の剛性をより一層向上させることができる。 In an embodiment of the present invention, an inclined portion is formed so that the lower surface of the closed cross-sectional portion is inclined rearwardly.
According to the above configuration, since the inclined portion is provided on the lower surface of the closed cross-sectional portion, the front end of the extending portion can be further fixed at the front position of the beam portion, thereby increasing the rigidity of the extending portion. This can be further improved.

この発明の一実施態様においては、上記ビーム部の内方に設けられ該ビーム部を左右に仕切る節部材を備えたものである。
上記構成によれば、節部材によりビーム部の剛性向上を図ることができると共に、延出部に対して偏って後突荷重が作用した場合のビーム部の平行四辺形変形を上述の節部材にて防止することができる。 In one embodiment of the present invention, a node member provided inside the beam portion and partitioning the beam portion left and right is provided.
According to the above configuration, the rigidity of the beam portion can be improved by the node member, and the parallelogram deformation of the beam portion when the rear impact load is applied to the extension portion is applied to the above-described node member. Can be prevented.

この発明の一実施態様においては、上記節部材は延出部が設けられたビーム部上面部に該延出部の前端とオーバラップして固定される上面固定部を備えたものである。
上記構成によれば、延出部の前端と節部材の上面固定部とがビーム部上面部を介してオーバラップするので、節部材によりビーム部の剛性向上を図りつつ、延出部に作用する後突荷重を節部材で受けることができ、支持剛性の向上を図ることができる。 In one embodiment of the present invention, the node member includes an upper surface fixing portion that is fixed to the upper surface portion of the beam portion provided with the extending portion so as to overlap the front end of the extending portion.
According to the above configuration, the front end of the extending portion and the upper surface fixing portion of the node member overlap with each other via the upper surface portion of the beam portion, so that the rigidity of the beam portion is improved by the node member and acts on the extending portion. The rear impact load can be received by the node member, and the support rigidity can be improved.

この発明の一実施態様においては、上記節部材はビーム部下面部に固定される下面固定部を備えたものである。
上記構成によれば、延出部に作用する後突荷重を、ビーム部下面部でも受けることができ、支持剛性のさらなる向上を図ることができる。 In an embodiment of the present invention, the node member includes a lower surface fixing portion fixed to the lower surface portion of the beam portion.
According to the above configuration, the rear impact load acting on the extending portion can be received also on the lower surface portion of the beam portion, and the support rigidity can be further improved.

この発明によれば、リヤエンドパネルの閉断面部を、その後端がバンパレインのビーム部前端より後方に位置するように構成し、バンパレインのビーム部に車幅方向に渡って形成され、かつビーム部後端から上方に延出して、その前端がビーム部の前端から間隔を隔てたビーム部上面部に固定される延出部を設けたので、リヤエンドパネルの閉断面部の大型化と、ビーム部の受け面拡大との両立を図ることができる効果がある。
しかも、上記延出部は、ビーム部後端から垂直上方に延びる垂直壁部と、該垂直壁部の上端から前方下方に傾斜して延びる傾斜壁部とを備えたものであるから、延出部の垂直壁部に作用する後突荷重を、上述の傾斜壁部で効率的に支えることができる効果がある。 According to the present invention, the closed cross-sectional portion of the rear end panel is configured such that the rear end thereof is positioned behind the front end of the beam portion of the bumper rain, is formed in the vehicle width direction on the beam portion of the bumper rain, and Since the extension portion is provided to extend upward from the end and the front end of the beam portion is fixed to the upper surface of the beam portion spaced from the front end of the beam portion, the rear end panel has a large closed cross-section, and the beam portion There is an effect that it is possible to achieve coexistence with expansion of the receiving surface.
In addition, the extension portion includes a vertical wall portion extending vertically upward from the rear end of the beam portion, and an inclined wall portion extending inclined forward and downward from the upper end of the vertical wall portion. There is an effect that the rear impact load acting on the vertical wall portion of the portion can be efficiently supported by the above-described inclined wall portion.

リヤエンドパネルの閉断面部の大型化と、ビーム部の受け面拡大との両立を図るという目的を、リヤエンドパネルの後方を車幅方向に延びるビーム部を有するバンパレインと、リヤエンドパネルのゲート開口下端に対応して形成され、その後端がバンパレインのリヤエンドパネル取付部より後方に位置し、かつバンパレインのビーム部前端より後方に位置する閉断面部と、上記バンパレインのビーム部に車幅方向に渡って設けられ、ビーム部後端から上方に延出し、前端がビーム部の前端から間隔を隔ててビーム部上面部に固定される延出部と、を備え、上記延出部は、ビーム部後端から垂直上方に延びる垂直壁部と、該垂直壁部の上端から前方下方に傾斜して延びる傾斜壁部とを備えるという構成にて実現した。 For the purpose of coexistence of enlargement of the closed section of the rear end panel and expansion of the receiving surface of the beam part, a bumper rain having a beam part extending in the vehicle width direction at the rear of the rear end panel, and a gate opening lower end of the rear end panel It is formed correspondingly, the rear end is located behind the rear end panel mounting part of the bumper rain and is located behind the front end of the beam part of the bumper rain, and the beam part of the bumper rain is provided across the vehicle width direction. An extension portion extending upward from the rear end of the beam portion and having a front end fixed to the upper surface portion of the beam portion at a distance from the front end of the beam portion, and the extension portion extends from the rear end of the beam portion. a vertical wall portion extending vertically upward, is achieved in construction of Ru and an inclined wall portion extending obliquely forwardly downwardly from the upper end of the vertical wall portion.

この発明の一実施例を以下図面に基づいて詳述する。
図１にはリヤバンパ構造を備えた自動車のリヤ側の斜視図、図２はリヤバンパ構造を示す後面図、図３は図２のＡ−Ａ線矢視断面図、図４は図２のＢ−Ｂ線矢視断面図、図５は図２のＣ−Ｃ線矢視断面図であって、図４に示すように、リヤフロアに段下げ形成されたスペアタイヤパン１の後端部１ａには、車体後部を形成するリヤエンドパネル２を取付けている。 An embodiment of the present invention will be described in detail with reference to the drawings.
1 is a rear perspective view of an automobile having a rear bumper structure, FIG. 2 is a rear view showing the rear bumper structure, FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, and FIG. FIG. 5 is a cross-sectional view taken along the line C-C of FIG. 2, and as shown in FIG. 4, the rear end portion 1 a of the spare tire pan 1 stepped down on the rear floor is shown in FIG. 4. The rear end panel 2 forming the rear part of the vehicle body is attached.

このリヤエンドパネル２は、図２に示すように、リヤゲート３（図１参照）のゲート開口４下端の車幅方向の長さと対応して車幅方向に延びるもので、該リヤエンドパネル２の上部前側には、図４に示すように、リヤエンドクロスメンバ５を接合固定して、このリヤエンドクロスメンバ５とリヤエンドパネル２との間には車幅方向に延びる閉断面部６を形成している。 2, the rear end panel 2 extends in the vehicle width direction corresponding to the length in the vehicle width direction of the lower end of the gate opening 4 of the rear gate 3 (see FIG. 1). As shown in FIG. 4, the rear end cross member 5 is joined and fixed, and a closed cross section 6 extending in the vehicle width direction is formed between the rear end cross member 5 and the rear end panel 2.

この閉断面部６は上述のゲート開口４の下端に対応して形成されたもので、リヤエンド部の剛性を確保するためのものである。
上述のリヤエンドパネル２の後部には、図６に分解斜視図で示すように、各要素から構成されるバンパレイン７が取付けられる。 The closed cross-section portion 6 is formed corresponding to the lower end of the gate opening 4 described above, and is for ensuring the rigidity of the rear end portion.
At the rear of the rear end panel 2 described above, as shown by the exploded perspective view in FIG. 6, the bumper reinforcement 7 is mounted consists of the elements.

すなわち、このバンパレイン７は、予め取付けブラケット８に接合固定された左右一対のクラッシュカン９，９（ｃｒａｓｈ−ｃａｎ）と、これら一対のクラッシュカン９，９の後端に接合されて、リヤエンドパネル２の後方を車幅方向に延びるビーム部１０と、このビーム部１０に車幅方向に渡って設けられた延出部１１と、上述のビーム部１０の内方に設けられ該ビーム部１０を左右に仕切る複数の節部材１２…と、左右一対のクラッシュカン９，９の相互間においてビーム部１０の前側開放部を閉塞するクロージングプレート１３と、左右一対のクラッシュカン９，９の車幅方向外方においてビーム部１０の前側開放部を閉塞するサイドクロージングプレート１４，１４とを備えている。   That is, the bumper rain 7 is joined to a pair of left and right crash cans 9 and 9 (crash-can) that are jointly fixed to the mounting bracket 8 in advance, and to the rear end of the pair of crash cans 9 and 9. A beam portion 10 extending in the vehicle width direction at the rear, an extension portion 11 provided in the beam portion 10 in the vehicle width direction, and the beam portion 10 provided inward of the beam portion 10 described above. And a pair of left and right crash cans 9, 9, a closing plate 13 that closes the front opening of the beam portion 10, and a pair of left and right crash cans 9, 9 outside the vehicle width direction. On the other hand, side closing plates 14 and 14 are provided for closing the front opening of the beam portion 10.

また、図３、図４、図５に示すように、ビーム部１０の後端面には、ウレタン等から成る衝撃吸収部材１５（いわゆるＥＡ材）が車幅方向に渡って設けられる一方、この衝撃吸収部材１５および上述のバンパレイン７が合成樹脂製のリヤバンパフェース１６で覆われている。 Further, as shown in FIGS. 3, 4, 5, while the rear end surface of the beam portion 10, the shock absorbing member 15 made of urethane or the like (so-called EA material) is provided over the vehicle width direction, the impact The absorbing member 15 and the bumper rain 7 described above are covered with a synthetic resin rear bumper face 16.

なお、上述のリヤエンドパネル２の車幅方向外方には、図１、図２、図３に示すように、車体外板を構成するキャブサイドパネル１７が設けられている。   As shown in FIGS. 1, 2, and 3, a cab side panel 17 that constitutes a vehicle body outer plate is provided outside the rear end panel 2 in the vehicle width direction.

次に、図４を参照して自動車のリヤバンパ構造における車幅方向ほぼ中央部の構成について説明する。
リヤエンドクロスメンバ５とリヤエンドパネル２とを接合して形成された上述の閉断面部６は、その後端６ａが、バンパレイン７のリヤエンドパネル取付部（図３に示す取付けブラケット８の位置参照）よりも後方に位置し、かつバンパレイン７のビーム部１０の前端１０ａよりもさらに後方に位置するように形成され、これにより、閉断面部６の大型化を図るように構成している。
また、上述のリヤエンドパネル２はその閉断面部６の下面が、後上がりに傾斜するように形成された前低後高状の傾斜部６ｂを備えている。 Next, with reference to FIG. 4, the configuration of the substantially central portion in the vehicle width direction in the rear bumper structure of the automobile will be described.
The closed section 6 formed by joining the rear end cross member 5 and the rear end panel 2 has a rear end 6a that is more than the rear end panel mounting portion of the bumper rain 7 (see the position of the mounting bracket 8 shown in FIG. 3). It is formed so as to be located rearward and further rearward than the front end 10a of the beam portion 10 of the bumper rain 7, and thereby the closed cross-section portion 6 is configured to be enlarged.
Further, the rear end panel 2 of the above-mentioned bottom surface of the closed-section portion 6 is provided with a low rear height like inclined portion 6b before being formed to be inclined rearwardly upwards.

一方、上述のビーム部１０は、後端に位置する縦壁部１０ｂと、その上下両端から車体フレームとしてのリヤサイドフレーム１８（図３、図５参照）側に向かって延びる上壁面部１０ｃおよび下壁面部１０ｄとを備えて、車両前方側が開放されたコ字状断面構造に形成されると共に、該ビーム部１０の縦壁部１０ｂにおける車幅方向中間部には前方に突出する複数条、例えば２条のビード１０ｅ，１０ｆを一体形成して、該ビーム部１０それ自体の剛性向上を図っている。   On the other hand, the beam portion 10 includes a vertical wall portion 10b positioned at the rear end, an upper wall surface portion 10c extending from the upper and lower ends thereof toward a rear side frame 18 (see FIGS. 3 and 5) as a vehicle body frame, and a lower wall portion 10c. A plurality of strips protruding forward in the vehicle width direction middle portion of the vertical wall portion 10b of the beam portion 10, for example, with a wall surface portion 10d. Two beads 10e and 10f are integrally formed to improve the rigidity of the beam portion 10 itself.

さらに、上述の延出部１１はビーム部１０の後端（縦壁部１０ｂ参照）から上方に延出し、その前端１１ａがビーム部１０の前端１０ａから後方に間隔を隔ててビーム部上面部としての上壁面部１０ｃに固定されている。   Further, the above-described extending portion 11 extends upward from the rear end of the beam portion 10 (see the vertical wall portion 10b), and the front end 11a is spaced apart from the front end 10a of the beam portion 10 as a rear portion as a beam portion upper surface portion. It is being fixed to the upper wall surface part 10c.

換言すれば、延出部１１の前端１１ａはビーム部１０の上壁面部１０ｃにおける前後方向中間部に固定されたものである。
さらに、詳しくは、この延出部１１は、ビーム部後端としての縦壁部１０ｂから垂直上方に延びる垂直壁部１１ｂと、この垂直壁部１１ｂの上端から前方下方に傾斜して延びる傾斜壁部１１ｃとを備えており、ビーム部１０と延出部１１との間には車幅方向に延びる閉断面１９が形成されている。 In other words, the front end 11a of the extension portion 11 is fixed to the middle portion in the front-rear direction of the upper wall surface portion 10c of the beam portion 10.
More specifically, the extending portion 11 includes a vertical wall portion 11b extending vertically upward from a vertical wall portion 10b as a rear end of the beam portion, and an inclined wall extending inclined forward and downward from the upper end of the vertical wall portion 11b. A closed section 19 extending in the vehicle width direction is formed between the beam portion 10 and the extending portion 11.

そして、上述の延出部１１をビーム部１０に固定することで、ビーム部１０の後突荷重の受け面を上方に拡大すべく構成している。
ここで、上述の延出部１１の垂直壁部１１ｂの下部と、ビーム部１０の縦壁部１０ｂとは、スポット溶接またはビード溶接により接合固定され、延出部１１の傾斜壁部１１ｃの前端１１ａと、ビーム部１０の上壁面部１０ｃとは、ビード溶接により接合固定される。 And it is comprised so that the receiving surface of the rear-end collision load of the beam part 10 may be expanded upwards by fixing the above-mentioned extension part 11 to the beam part 10. FIG.
Here, the lower part of the vertical wall part 11b of the extension part 11 and the vertical wall part 10b of the beam part 10 are joined and fixed by spot welding or bead welding, and the front end of the inclined wall part 11c of the extension part 11 is fixed. 11a and the upper wall surface part 10c of the beam part 10 are joined and fixed by bead welding.

しかも、図４に示すように、リヤエンドパネル２の閉断面部６と上述の延出部１１の傾斜壁部１１ｃとの間には、軽度の後突時において延出部１１の車両前方への変位を許容する前後方向の空間部２０を形成して、軽度の後突時には前方へ移動してくる延出部１１が閉断面部６に衝合することを防止して、車体側、つまり、リヤエンドパネル２が損傷するのを防止すべく構成している。   In addition, as shown in FIG. 4, between the closed cross-sectional portion 6 of the rear end panel 2 and the inclined wall portion 11c of the above-described extension portion 11, the extension portion 11 moves forward of the vehicle during a slight rear collision. By forming a space portion 20 in the front-rear direction that allows displacement, the extension portion 11 that moves forward during a slight rear collision is prevented from colliding with the closed cross-section portion 6, The rear end panel 2 is configured to be prevented from being damaged.

一方、ビーム部１０の内方に設けられた節部材１２は、図３、図４に示すように、平板状の節部１２ａと、この節部１２ａの上端から車幅方向に折返し形成された上面固定部１２ｂと、節部１２ａの下端から車幅方向に折返し形成された下面固定部１２ｃと、節部１２ａの後端から車幅方向に折返し形成された後片部１２ｄとを有するものである。   On the other hand, as shown in FIGS. 3 and 4, the node member 12 provided inside the beam portion 10 includes a flat plate-like node portion 12a and an upper surface formed by folding back from the upper end of the node portion 12a in the vehicle width direction. It has a fixed portion 12b, a lower surface fixed portion 12c that is folded back in the vehicle width direction from the lower end of the node portion 12a, and a rear piece portion 12d that is folded back in the vehicle width direction from the rear end of the node portion 12a. .

上述の節部材１２の上面固定部１２ｂは、延出部１１が設けられたビーム部１０の上壁面部１０ｃに該延出部１１の前端１１ａとオーバラップするように固定され、後突荷重の入力時に延出部１１に作用する荷重を該節部材１２で受けるように構成している。 The upper surface fixing portion 12b of the above-described node member 12 is fixed to the upper wall surface portion 10c of the beam portion 10 provided with the extending portion 11 so as to overlap the front end 11a of the extending portion 11, and the rear impact load is increased. The node member 12 is configured to receive a load acting on the extending portion 11 during input.

また、上述の節部材１２の下面固定部１２ｃは、ビーム部１０の下壁面部１０ｄに固定されており、延出部１１に作用する後突荷重を、節部材１２を介してビーム部１０の下壁面部１０ｄに伝達して、該荷重を下壁面部１０ｄでも受けるように構成している。 Further, the lower surface fixing portion 12c of the above-described node member 12 is fixed to the lower wall surface portion 10d of the beam portion 10, and a rear impact load acting on the extending portion 11 is applied to the beam portion 10 via the node member 12. The load is transmitted to the lower wall surface portion 10d so that the load is also received by the lower wall surface portion 10d.

図４に示す構成に代えて、図７または図８に示す構成を採用してもよい。
図７に示す構造は、延出部１１の傾斜壁部１１ｃの前端が、リヤエンドパネル２の閉断面部６の後端６ａよりも前方部位において上述のビーム部１０の上壁面部１０ｃに固定されるように、該前端に固定部１１ｄを設け、該固定部１１ｄをビーム部１０の上壁面部１０ｃにビード溶接したものであり、このように構成すると、閉断面１９が大きくなるので、延出部１１の剛性を向上させることができる。また、延出部１１の傾斜壁部１１ｃと対応すべく閉断面部６の下面に前低後高状の傾斜部６ｂを形成しているので、閉断面部６の大型化を図りつつ、延出部１１と該閉断面部６との干渉および接触を回避することができる。 Instead of the configuration shown in FIG. 4, the configuration shown in FIG. 7 or FIG. 8 may be adopted.
In the structure shown in FIG. 7 , the front end of the inclined wall portion 11 c of the extension portion 11 is fixed to the upper wall surface portion 10 c of the beam portion 10 at a position ahead of the rear end 6 a of the closed section 6 of the rear end panel 2. In this way, a fixing portion 11d is provided at the front end, and the fixing portion 11d is bead-welded to the upper wall surface portion 10c of the beam portion 10. With this configuration, the closed section 19 becomes large, The rigidity of the part 11 can be improved. Further, since the inclined portion 6b having a front, rear, and rear height is formed on the lower surface of the closed cross-section portion 6 so as to correspond to the inclined wall portion 11c of the extension portion 11, the closed cross-section portion 6 can be enlarged while being enlarged. Interference and contact between the protruding portion 11 and the closed cross-section portion 6 can be avoided.

図８に示す構造は、延出部１１の傾斜壁部１１ｃの前端が、リヤエンドパネル２の閉断面部６の後端６ａよりも前方部位において上述のビーム部１０の上壁面部１０ｃにスポット溶接にて固定されるように、該前端に上壁面部１０ｃに沿う固定部１１ｄを設け、該固定部１１ｄと、上壁面部１０ｃと、節部材１２の上面固定部１２ｂとの三者をスポット溶接したものであり、このように構成しても、閉断面１９が大きくなるので、延出部１１の剛性を向上させることができる。また、延出部１１の傾斜壁部１１ｃと対応すべく閉断面部６の下面に後上がりに傾斜する傾斜部６ｂを形成しているので、閉断面部６の大型化を図りつつ、延出部１１と該閉断面部６との干渉、接触を回避することができ、さらに、節部材１２の上面固定部１２ｂが延出部１１前端の固定部１１ｄとオーバラップするので、延出部１１に作用する後突荷重を該節部材１２で受けることができる。
なお、図７、図８において、図４と同一の部分には同一符号を付して、その詳しい説明を省略している。 In the structure shown in FIG. 8, the front end of the inclined wall portion 11c of the extension portion 11 is spot-welded to the upper wall surface portion 10c of the beam portion 10 at a position ahead of the rear end 6a of the closed section 6 of the rear end panel 2. A fixing portion 11d is provided along the upper wall surface portion 10c at the front end so that the three members of the fixing portion 11d, the upper wall surface portion 10c, and the upper surface fixing portion 12b of the node member 12 are spot-welded. Even in such a configuration, the closed section 19 becomes large, so that the rigidity of the extending portion 11 can be improved. Moreover, since the inclined part 6b which inclines back up is formed in the lower surface of the closed cross-section part 6 so as to correspond to the inclined wall part 11c of the extension part 11, it extends while aiming at enlargement of the closed cross-section part 6. Interference and contact between the portion 11 and the closed cross-section portion 6 can be avoided, and the upper surface fixing portion 12b of the node member 12 overlaps with the fixing portion 11d at the front end of the extending portion 11, so that the extending portion 11 It is possible to receive a rear impact load acting on the joint member 12.
7 and 8, the same parts as those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

ところで、図３、図６において、クロージングプレート１３には、複数の円形状の開口部１３ａ…を形成して、その軽量化を図る一方、該クロージングプレート１３の左右両端部には、接合片１３ｂ，１３ｂを一体に折曲げ形成し、これらの各接合片１３ｂ，１３ｂをクラッシュカン９の対応部にスポット溶接にて接合固定している。 Incidentally, in FIG. 3, FIG. 6, the closing plate 13, to form a plurality of circular openings 13a ..., while achieving weight reduction, to the left and right ends of the closing plate 13, the joining pieces 13b , 13b are integrally bent, and these joining pieces 13b, 13b are joined and fixed to corresponding portions of the crash can 9 by spot welding.

また、図３に示すように、サイドクロージングプレート１４はクラッシュカン９の車外側の面にビード溶接にて接合固定されるが、このサイドクロージングプレート１４に接合片（図示せず）を一体に折曲げ形成して、該接合片をクラッシュカン９の対応部にスポット溶接にて接合固定すべく構成してもよい。
なお、図３において、１ｂはスペアタイヤパン１の側壁部である。 Further, as shown in FIG. 3, the side closing plate 14 is bonded and fixed to the outer surface of the crash can 9 by bead welding, and a joining piece (not shown) is integrally folded to the side closing plate 14. It may be configured to be bent and fixed to the corresponding portion of the crash can 9 by spot welding.
In FIG. 3, 1 b is a side wall portion of the spare tire pan 1.

一方、図３、図５に示す車体フレームとしてのリヤサイドフレーム１８はリヤフロア下面に沿って車両の前後方向に延びる車体剛性部材であって、該リヤサイドフレーム１８は前後方向に延びる閉断面２１を備えている。   On the other hand, the rear side frame 18 as a vehicle body frame shown in FIGS. 3 and 5 is a vehicle body rigid member extending in the front-rear direction of the vehicle along the lower surface of the rear floor, and the rear side frame 18 has a closed cross section 21 extending in the front-rear direction. Yes.

上述のリヤサイドフレーム１８の後端部は、リヤエンドブラケット２２を介してリヤエンドパネル２に取付けられており、このリヤサイドフレーム１８と前後方向で対応するように上述のクラッシュカン９が取付けられている。 The rear end portion of the rear side frame 18 is attached to the rear end panel 2 via a rear end bracket 22, and the crash can 9 is attached so as to correspond to the rear side frame 18 in the front-rear direction.

このクラッシュカン９は図９に斜視図で示すように、複数組、たとえば、３組のボルト、ナット２３を用いてリヤエンドパネル２に着脱可能に取付けられ、軽度の後突時においてバンパレイン７が損傷、破損した場合には、その交換ができるように構成されている。なお、このクラッシュカン９は加工の関係上、図９の接合ライン２４で接続される２部材を組合わせて構成したものである。また、図９においては車幅方向左側のクラッシュカン９を示しているが、車幅方向右側のクラッシュカン９は図６にも示すように左側のそれと略左右対称構造に形成されている。   As shown in the perspective view of FIG. 9, the crash can 9 is detachably attached to the rear end panel 2 using a plurality of groups, for example, three groups of bolts and nuts 23, and the bumper rain 7 is damaged at the time of a slight rear collision. If it is damaged, it can be replaced. The crush can 9 is formed by combining two members connected by the joining line 24 in FIG. Further, FIG. 9 shows the crash can 9 on the left side in the vehicle width direction, but the crash can 9 on the right side in the vehicle width direction is formed in a substantially bilaterally symmetrical structure with that on the left side as shown in FIG.

次に、図９、図１０を参照してクラッシュカン９とビーム部１０との接続構造について詳述する。
上述のビーム部１０は、縦壁部１０ｂと、上下の壁面部１０ｃ，１０ｄとを有すると共に、上壁面部１０ｃの前端には上方に指向するフランジ部１０ｇが一体に形成されており、下壁面部１０ｄの前端には下方に指向するフランジ部１０ｈが一体に形成されている。 Next, a connection structure between the crash can 9 and the beam unit 10 will be described in detail with reference to FIGS. 9 and 10.
The beam portion 10 described above has a vertical wall portion 10b and upper and lower wall surface portions 10c and 10d, and a flange portion 10g directed upward is integrally formed at the front end of the upper wall surface portion 10c. A flange portion 10h directed downward is integrally formed at the front end of the portion 10d.

上述のクラッシュカン９は、図９に示すように、上下幅が大きく、方形枠状断面の基部９Ａと、上下幅が小さく、方形枠状断面の先端部９Ｂとを前後方向に連続して形成したエネルギ吸収部材であって、基部９Ａの前端に一体形成された接合フランジ部９ａ，９ｂが取付けブラケット８に接続されている。 Crush can 9 described above, as shown in FIG. 9, the vertical width is large, the base portion 9 A rectangular frame-shaped cross section, the vertical width is small, continuously and tip 9B square frame-like cross section in the longitudinal direction Joining flange portions 9a and 9b, which are formed energy absorbing members and are integrally formed at the front end of the base portion 9A, are connected to the mounting bracket 8.

しかも、図１０に示すように、クラッシュカン９の基端（つまり前端）からビーム部１０の上下の壁面部１０ｃ，１０ｄに向かって延び少なくとも上下いずれかの壁面部１０ｃ，１０ｄ端部（図１０の実施例では上壁面部１０ｃの前端部）に固定される第１接続部２５と、上記第１接続部２５で上下幅が縮小されビーム部１０の上下の壁面部１０ｃ，１０ｄの間を通ってビーム部１０の縦壁部１０ｂに固定される第２接続部２６と、を備えている。   Moreover, as shown in FIG. 10, at least one of the upper and lower wall surface portions 10 c, 10 d (see FIG. 10) extends from the base end (that is, the front end) of the crash can 9 toward the upper and lower wall surface portions 10 c, 10 d of the beam portion 10. In this embodiment, the first connecting portion 25 fixed to the front end portion of the upper wall surface portion 10c and the vertical width of the first connecting portion 25 are reduced so that it passes between the upper and lower wall surface portions 10c and 10d of the beam portion 10. And a second connecting portion 26 fixed to the vertical wall portion 10b of the beam portion 10.

つまり、基部９Ａと先端部９Ｂとを有するクラッシュカン９の先端部９Ｂを、側面視コ字状断面のビーム部１０内に挿入して、クラッシュカン９の前後方向の長さを稼ぎ、エネルギ吸収量の増大を図りつつ、クラッシュカン９の断面の大型化を可能としたものである。また、第１接続部２５と第２接続部２６とを備えることで、ビーム部１０からの荷重伝達性能の向上を図るように構成したものである。   That is, the front end portion 9B of the crash can 9 having the base portion 9A and the front end portion 9B is inserted into the beam portion 10 having a U-shaped cross section when viewed from the side to increase the length of the crash can 9 in the front-rear direction, thereby absorbing energy. The cross section of the crash can 9 can be enlarged while increasing the amount. Further, by providing the first connection portion 25 and the second connection portion 26, the load transmission performance from the beam portion 10 is improved.

また、上述の第１接続部２５には、クラッシュカン９の基部９Ａの後端から上方に立上がるフランジ部９ｃを一体形成し、このクラッシュカン９側のフランジ部９ｃをビーム部１０側のフランジ部１０ｇと対向させて、両フランジ部９ｃ，１０ｇを接合固定している。 Also, the first connecting portion 25 described above, integrally formed flange portion 9c which rises upward from the rear end of the base portion 9 A crash cans 9, the flange portion 9c of the crush can 9 side of the beam portion 10 Both flange portions 9c and 10g are joined and fixed so as to face the flange portion 10g.

さらに、上述の第２接続部２６には、ビーム部１０の縦壁部１０ｂの内面に沿うように先端部９Ｂの後端四辺から複数のフランジ部９ｄ，９ｅ，９ｆ，９ｇを一体に折曲げ形成し、これらの各フランジ部９ｄ，９ｅ，９ｆ，９ｇをビーム部１０の縦壁部１０ｂに接合固定している。   Further, a plurality of flange portions 9d, 9e, 9f, and 9g are integrally bent from the four rear end sides of the front end portion 9B along the inner surface of the vertical wall portion 10b of the beam portion 10 in the second connection portion 26 described above. These flange portions 9d, 9e, 9f, and 9g are joined and fixed to the vertical wall portion 10b of the beam portion 10.

図１０に示す実施例では、クラッシュカン９の基部９Ａの上下方向中心ＣＬ１に対して、延出部１１を含むビーム部１０の上下方向中心ＣＬ２が上下方向（この実施例では上方）にオフセットされているので、上述の第１接続部２５はビーム部１０がオフセットされる側つまり上側にのみ設けられており、クラッシュカン９の構造のシンプル化を図りつつ、ビーム部１０がオフセットされる側に作用する大きい荷重を第１接続部２５と第２接続部２６とで受けることにより、オフセットされる側の変形量が大きくなるのを抑制するように構成している。   In the embodiment shown in FIG. 10, the vertical center CL2 of the beam portion 10 including the extending portion 11 is offset in the vertical direction (upward in this embodiment) with respect to the vertical center CL1 of the base 9A of the crash can 9. Therefore, the first connecting portion 25 described above is provided only on the side where the beam portion 10 is offset, that is, on the upper side, and on the side where the beam portion 10 is offset while simplifying the structure of the crash can 9. By receiving a large load acting on the first connecting portion 25 and the second connecting portion 26, the amount of deformation on the offset side is suppressed from increasing.

また、図１０に示すように、クラッシュカン９の後方に位置する上述の延出部１１の前端は、第１接続部２５の近傍にビード溶接にて固定されており、延出部１１に作用する後突荷重を効率的に第１接続部２５で受けるように構成している。
図１０に示す構成に代えて、図１１、または図１２に示す構成を採用してもよい。 Further, as shown in FIG. 10, the front end of the above-described extension portion 11 located behind the crash can 9 is fixed by bead welding in the vicinity of the first connection portion 25, and acts on the extension portion 11. The rear connection load is efficiently received by the first connecting portion 25.
Instead of the configuration shown in FIG. 10, the configuration shown in FIG. 11 or FIG. 12 may be adopted.

図１１に示す構造は、クラッシュカン９の基部９Ａ後端に上方に立上がるフランジ部９ｃと、下方に折れ曲がるフランジ部９ｃとをそれぞれ一体形成し、これら上下の各フランジ部９ｃ，９ｃを、ビーム部１０の前端の上下のフランジ部１０ｇ，１０ｈにそれぞれ接合固定して、ビーム部１０からの荷重伝達性能をさらに向上させたものである。   In the structure shown in FIG. 11, a flange portion 9c that rises upward at the rear end of the base portion 9A of the crash can 9 and a flange portion 9c that bends downward are integrally formed. The load transmission performance from the beam portion 10 is further improved by bonding and fixing to the upper and lower flange portions 10g and 10h at the front end of the portion 10, respectively.

図１２に示す構造は、クラッシュカン９側のフランジ部９ｃと、ビーム部１０側のフランジ部１０ｇ，１０ｈとを省略すると共に、クラッシュカン９の基部９Ａ後端に段差形状の第１接続部２５を形成して、この第１接続部２５に対して、ビーム部１０の上壁面部１０ｃ前端、下壁面部１０ｄ前端をビード溶接またはスポット溶接にて接合固定して、構造の簡素化を図ったものである。   The structure shown in FIG. 12 omits the flange portion 9c on the crush can 9 side and the flange portions 10g and 10h on the beam portion 10 side, and a step-shaped first connecting portion 25 at the rear end of the base portion 9A of the crush can 9. And the front end of the upper wall surface portion 10c and the front end portion of the lower wall surface portion 10d of the beam portion 10 are joined and fixed to the first connecting portion 25 by bead welding or spot welding to simplify the structure. Is.

なお、図１１、図１２において、図１０と同一の部分には同一符号を付して、その詳しい説明を省略している。また、図中、矢印Ｆは車両前方を示し、矢印Ｒは車両後方を示す。   11 and 12, the same parts as those in FIG. 10 are denoted by the same reference numerals, and detailed description thereof is omitted. In the figure, arrow F indicates the front of the vehicle, and arrow R indicates the rear of the vehicle.

このように、上記実施例の自動車のリヤバンパ構造は、リヤエンドパネル２の後方を車幅方向に延びるビーム部１０を有するバンパレイン７と、リヤエンドパネル２のゲート開口４下端に対応して形成され、その後端６ａがバンパレイン７のリヤエンドパネル取付部（図５に示す取付けブラケット８の位置参照）より後方に位置し、かつバンパレイン７のビーム部１０の前端１０ａより後方に位置する閉断面部６と、上記バンパレイン７のビーム部１０に車幅方向に渡って設けられ、ビーム部１０後端から上方に延出し、前端１１ａがビーム部１０の前端から間隔を隔ててビーム部１０の上面部（上壁面部１０ｃ参照）に固定される延出部１１と、を備えたものである（図４参照）。 Thus, a rear bumper structure for an automobile of the embodiment, the bumper reinforcement 7 having a beam portion 10 which extends rearwardly of the rear end panel 2 in the vehicle width direction, are formed corresponding to the gate opening 4 the lower end of the rear end panel 2, thereafter A closed cross-sectional portion 6 whose end 6a is located behind the rear end panel mounting portion of the bumper rain 7 (see the position of the mounting bracket 8 shown in FIG. 5) and behind the front end 10a of the beam portion 10 of the bumper rain 7; It is provided in the beam portion 10 of the bumper rain 7 in the vehicle width direction, extends upward from the rear end of the beam portion 10, and the front end 11 a is spaced from the front end of the beam portion 10 with an upper surface portion (upper wall surface portion). 10c)) (see FIG. 4).

この構成によれば、リヤエンドパネル２の閉断面部６を、その後端６ａがバンパレイン７のビーム部１０前端よりも後方に位置するように構成したので、リヤエンドパネル２の閉断面部６の大型化を図って、リヤエンド部の剛性向上を図ることができる。   According to this configuration, the closed cross-sectional portion 6 of the rear end panel 2 is configured such that the rear end 6a is positioned behind the front end of the beam portion 10 of the bumper rain 7, so that the closed cross-sectional portion 6 of the rear end panel 2 is enlarged. As a result, the rigidity of the rear end portion can be improved.

また、上記ビーム部１０には、車幅方向に渡って形成され、かつビーム部１０後端から上方に延出して、その前端１１ａがビーム部１０の前端から間隔を隔ててビーム部１０の上面部（上壁面部１０ｃ参照）に固定される延出部１１を設けたので、この延出部１１によりビーム部１０の受け面拡大を図って、後突に対して有利となる。
要するに、リヤエンドパネル２の閉断面部６の大型化と、ビーム部１０の受け面拡大との両立を図ることができる。 Further, the beam portion 10 is formed in the vehicle width direction and extends upward from the rear end of the beam portion 10, and the front end 11 a is spaced from the front end of the beam portion 10 and has an upper surface. Since the extending portion 11 fixed to the portion (see the upper wall surface portion 10c) is provided, the receiving surface of the beam portion 10 is expanded by the extending portion 11, which is advantageous for the rear collision.
In short, it is possible to achieve both the enlargement of the closed cross-section portion 6 of the rear end panel 2 and the expansion of the receiving surface of the beam portion 10.

また、上記延出部１１は、ビーム部１０後端から垂直上方に延びる垂直壁部１１ｂと、該垂直壁部１１ｂの上端から前方下方に傾斜して延びる傾斜壁部１１ｃとを備えたものである（図４参照）。
この構成によれば、延出部１１の垂直壁部１１ｂに作用する後突荷重を、上述の傾斜壁部１１ｃで効率的に支えることができる。 The extending portion 11 includes a vertical wall portion 11b extending vertically upward from the rear end of the beam portion 10, and an inclined wall portion 11c extending inclined forward and downward from the upper end of the vertical wall portion 11b. Yes (see FIG. 4) .
According to this structure, the rear impact load which acts on the vertical wall part 11b of the extension part 11 can be efficiently supported by the above-mentioned inclined wall part 11c.

さらに、上記閉断面部６と上記延出部１１の傾斜壁部１１ｃとの間に形成され、軽度の後突時において延出部１１の前方への変位を許容する前後方向の空間部２０を備えたものである（図４参照）。
この構成によれば、上述の空間部２０を設けたことにより、軽度の後突時において車体側の損傷、つまり、リヤエンドパネル２の損傷を防止することができる。 Further, a space portion 20 in the front-rear direction is formed between the closed cross-section portion 6 and the inclined wall portion 11c of the extension portion 11 and allows the extension portion 11 to be displaced forward during a slight rear collision. Provided (see FIG. 4) .
According to this configuration, by providing the space portion 20 described above, it is possible to prevent damage on the vehicle body side, that is, damage to the rear end panel 2 at the time of a slight rear collision.

加えて、上記延出部１１は、その前端がリヤエンドパネル２の閉断面部６の後端６ａより前方部位において上記ビーム部１０の上面部（上壁面部１０ｃ参照）に固定される固定部１１ｄを備えたものである（図７、図８参照）。
この構成によれば、延出部１１の前端がリヤエンドパネル２の閉断面部６の後端６ａよりも前方部位に固定されるので、該延出部１１とリヤエンドパネル２の閉断面部６との接触を回避しつつ、延出部１１の剛性を向上させることができる。 In addition, the extension portion 11 has a front end fixed to the upper surface portion (see the upper wall surface portion 10c) of the beam portion 10 at a position ahead of the rear end 6a of the closed section 6 of the rear end panel 2. (Refer to FIG. 7 and FIG. 8).
According to this configuration, the front end of the extension portion 11 is fixed to the front part of the rear end 6a of the closed cross-section portion 6 of the rear end panel 2, so that the extension portion 11 and the closed cross-section portion 6 of the rear end panel 2 are It is possible to improve the rigidity of the extension portion 11 while avoiding the contact.

また、上記閉断面部６の下面が後上がりに傾斜するように形成された傾斜部６ｂを備えたものである（図４、図７、図８参照）。
この構成によれば、上記閉断面部６に上述の傾斜部６ｂを設けたので、延出部１１の前端をさらにビーム部１０の前方位置に固定することができ、これにより該延出部１１の剛性をより一層向上させることができる。 In addition, an inclined portion 6b is formed so that the lower surface of the closed cross-sectional portion 6 is inclined rearwardly (see FIGS. 4, 7, and 8) .
According to this configuration, since the above-described inclined portion 6 b is provided in the closed cross-section portion 6, the front end of the extension portion 11 can be further fixed to the front position of the beam portion 10, thereby the extension portion 11. The rigidity can be further improved.

さらに、上記ビーム部１０の内方に設けられ該ビーム部１０を左右に仕切る節部材１２を備えたものである（図４、図７、図８参照）。
この構成によれば、節部材１２によりビーム部１０の剛性向上を図ることができると共に、延出部１１に対して偏って後突荷重が作用した場合のビーム部１０の平行四辺形変形を上述の節部材１２にて防止することができる。 Further, a node member 12 provided inside the beam portion 10 for partitioning the beam portion 10 to the left and right is provided (see FIGS. 4, 7, and 8) .
According to this configuration, the rigidity of the beam portion 10 can be improved by the node member 12, and the parallelogram deformation of the beam portion 10 when the rear impact load is applied to the extension portion 11 in a biased manner is described above. This node member 12 can prevent this.

加えて、上記節部材１２は延出部１１が設けられたビーム部１０の上面部（上壁面部１０ｃ参照）に該延出部１１の前端とオーバラップして固定される上面固定部１２ｂを備えたものである（図４、図８参照）。
この構成によれば、延出部１１の前端と節部材１２の上面固定部１２ｂとがビーム部１０の上面部（上壁面部１０ｃ参照）を介してオーバラップするので、節部材１２によりビーム部１０の剛性向上を図りつつ、延出部１１に作用する後突荷重を節部材１２で受けることができ、支持剛性の向上を図ることができる。 In addition, the node member 12 includes an upper surface fixing portion 12b which is fixed to the upper surface portion (see the upper wall surface portion 10c) of the beam portion 10 provided with the extending portion 11 so as to overlap the front end of the extending portion 11. (See FIGS. 4 and 8).
According to this configuration, the front end of the extending portion 11 and the upper surface fixing portion 12b of the node member 12 overlap via the upper surface portion of the beam portion 10 (see the upper wall surface portion 10c). The rear impact load acting on the extension portion 11 can be received by the node member 12 while the rigidity of the joint 10 is improved, and the support rigidity can be improved.

そのうえ、上記節部材１２はビーム部１０の下面部（下壁面部１０ｄ参照）に固定される下面固定部１２ｃを備えたものである（図４、図７、図８参照）。
この構成によれば、延出部１１に作用する後突荷重を、ビーム部１０の下面部（下壁面部１０ｄ参照）でも受けることができ、支持剛性のさらなる向上を図ることができる。 Additionally, the section member 12 is used having a bottom surface fixing portion 12c which is fixed to the lower surface of the beam portion 10 (see the lower wall surface portion 10d) (see FIGS. 4, 7, 8).
According to this configuration, the rear impact load acting on the extending portion 11 can be received also on the lower surface portion (see the lower wall surface portion 10d) of the beam portion 10, and the support rigidity can be further improved.

図１３はリヤエンドパネル２の閉断面部６の他の実施例を示し、図４で示した構成においては前側に位置するリヤエンドクロスメンバ５と、後側に位置するリヤエンドパネル２とで上記閉断面部６を形成したが、これは図１３に示すように、前後逆の構造を採用してもよい。つまり、図１３では前側に位置するリヤエンドパネル２と、後側に位置するリヤエンドクロスメンバ５とで閉断面部６を形成したものである。 FIG. 13 shows another embodiment of the closed section 6 of the rear end panel 2. In the configuration shown in FIG. 4, the closed section is composed of the rear end cross member 5 positioned on the front side and the rear end panel 2 positioned on the rear side. It was formed parts 6, which, as shown in FIG. 13, may be employed reverse structure before and after. That is, in FIG. 13, the closed end section 6 is formed by the rear end panel 2 positioned on the front side and the rear end cross member 5 positioned on the rear side.

このように構成しても、その他の構成、作用、効果については、図４の実施例と同様であるから、図１３において図４と同一の部分には同一符号を付して、その詳しい説明を省略する。 Even in this configuration, the other configuration, operation, and effects are the same as those in the embodiment of FIG. 4, and therefore, in FIG. 13, the same parts as those in FIG. Is omitted.

この発明の構成と、上述の実施例との対応において、
この発明のビーム部上面部は、実施例のビーム部１０の上壁面部１０ｃに対応し、
以下同様に、
ビーム部下面部は、ビーム部１０の下壁面部１０ｄに対応するも、
この発明は、上述の実施例の構成のみに限定されるものではない。 In the correspondence between the configuration of the present invention and the above-described embodiment,
The beam portion upper surface portion of the present invention corresponds to the upper wall surface portion 10c of the beam portion 10 of the embodiment,
Similarly,
The beam portion lower surface portion corresponds to the lower wall surface portion 10d of the beam portion 10,
The present invention is not limited to the configuration of the above-described embodiment.

リヤバンパ構造を備えた自動車のリヤ側の斜視図Rear side perspective view of a car with a rear bumper structure 自動車のリヤバンパ構造を示す後面図Rear view showing the rear bumper structure of an automobile 図２のＡ−Ａ線矢視断面図2 is a cross-sectional view taken along line AA in FIG. 図２のＢ−Ｂ線矢視断面図2 is a cross-sectional view taken along line BB in FIG. 図２のＣ−Ｃ線矢視断面図CC sectional view taken on line CC in FIG. バンパレインの分解斜視図Exploded perspective view of bumper rain リヤバンパ構造の他の実施例を示す断面図Sectional view showing another embodiment of rear bumper structure リヤバンパ構造のさらに他の実施例を示す断面図Sectional view showing still another embodiment of the rear bumper structure クラッシュカンの拡大斜視図Enlarged perspective view of the crash can 図５の要部拡大断面図The principal part expanded sectional view of FIG. クラッシュカン接続構造の他の実施例を示す断面図Sectional drawing which shows the other Example of a crash can connection structure クラッシュカン接続構造のさらに他の実施例を示す断面図Sectional drawing which shows the further another Example of a crash can connection structure 閉断面部の構造の他の実施例を示す断面図Sectional drawing which shows the other Example of the structure of a closed cross-section part

２…リヤエンドパネル
４…ゲート開口
６…閉断面部
６ａ…後端
６ｂ…傾斜部
７…バンパレイン
１０…ビーム部
１０ｃ…上壁面部（ビーム部上面部）
１０ｄ…下壁面部（ビーム部下面部）
１１…延出部
１１ａ…前端
１１ｂ…垂直壁部
１１ｃ…傾斜壁部
１１ｄ…固定部
１２…節部材
１２ｂ…上面固定部
１２ｃ…下面固定部
２０…空間部 2 ... Rear end panel 4 ... Gate opening 6 ... Closed section 6a ... Rear end 6b ... Inclined part 7 ... Bumper rain 10 ... Beam part 10c ... Upper wall surface part (upper part of beam part)
10d: Lower wall surface portion (beam portion lower surface portion)
DESCRIPTION OF SYMBOLS 11 ... Extension part 11a ... Front end 11b ... Vertical wall part 11c ... Inclined wall part 11d ... Fixed part 12 ... Node member 12b ... Upper surface fixing part 12c ... Lower surface fixing part 20 ... Space part

Claims (7)

自動車のリヤバンパ構造であって、
リヤエンドパネルの後方を車幅方向に延びるビーム部を有するバンパレインと、
リヤエンドパネルのゲート開口下端に対応して形成され、その後端がバンパレインのリヤエンドパネル取付部より後方に位置し、かつバンパレインのビーム部前端より後方に位置する閉断面部と、
上記バンパレインのビーム部に車幅方向に渡って設けられ、ビーム部後端から上方に延出し、前端がビーム部の前端から間隔を隔ててビーム部上面部に固定される延出部と、
を備え、
上記延出部は、ビーム部後端から垂直上方に延びる垂直壁部と、該垂直壁部の上端から前方下方に傾斜して延びる傾斜壁部とを備えた
自動車のリヤバンパ構造。 The rear bumper structure of the car,
A bumper rain having a beam portion extending in the vehicle width direction behind the rear end panel;
A closed cross-section formed corresponding to the lower end of the gate opening of the rear end panel, the rear end of which is located behind the rear end panel mounting portion of the bumper rain and located behind the front end of the beam portion of the bumper rain;
An extension part provided on the beam part of the bumper train in the vehicle width direction, extending upward from the rear end of the beam part, and the front end being fixed to the upper part of the beam part at a distance from the front end of the beam part;
Equipped with a,
The rear bumper structure of an automobile, wherein the extending portion includes a vertical wall portion extending vertically upward from the rear end of the beam portion, and an inclined wall portion extending inclined forward and downward from the upper end of the vertical wall portion . 上記閉断面部と上記延出部の傾斜壁部との間に形成され、軽度の後突時において延出部の前方への変位を許容する前後方向の空間部を備えた
請求項１記載の自動車のリヤバンパ構造。 The space part of the front-back direction which is formed between the said closed cross-section part and the inclined wall part of the said extension part, and permits the displacement to the front of an extension part at the time of a light rear collision is provided. Rear bumper structure for automobiles. 上記延出部は、その前端がリヤエンドパネルの閉断面部の後端より前方部位において上記ビーム部上面部に固定される固定部を備えた
請求項１または２記載の自動車のリヤバンパ構造。 The rear bumper structure for an automobile according to claim 1 or 2, wherein the extending portion includes a fixing portion whose front end is fixed to the upper surface portion of the beam portion at a position ahead of the rear end of the closed cross section of the rear end panel . 上記閉断面部の下面が後上がりに傾斜するように形成された傾斜部を備えた
請求項１〜３の何れか１に記載の自動車のリヤバンパ構造。 The rear bumper structure for an automobile according to any one of claims 1 to 3, further comprising an inclined portion formed so that a lower surface of the closed cross-sectional portion is inclined rearwardly. 上記ビーム部の内方に設けられ該ビーム部を左右に仕切る節部材を備えた
請求項１〜４の何れか１に記載の自動車のリヤバンパ構造。 The rear bumper structure for an automobile according to any one of claims 1 to 4, further comprising a node member provided on an inner side of the beam portion and partitioning the beam portion left and right . 上記節部材は延出部が設けられたビーム部上面部に該延出部の前端とオーバラップして固定される上面固定部を備えた
請求項５記載の自動車のリヤバンパ構造。 Said clause member rear bumper structure for an automobile according to claim 5 Symbol mounting with a top fixing portion fixed to the front end overlaps the portion out said extension to the beam portion upper surface portion which portion extends is provided. 上記節部材はビーム部下面部に固定される下面固定部を備えた
請求項６記載の自動車のリヤバンパ構造。 It said clause member rear bumper structure of an automobile according to claim 6, further comprising a bottom surface fixing portion fixed to the beam subordinates surface.
JP2006262229A 2006-09-27 2006-09-27 Rear bumper structure of automobile Expired - Fee Related JP4876822B2 (en)

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