JP2008213826A - Coupling part structure of locker rear end with rear pillar lower end of automobile - Google Patents

Coupling part structure of locker rear end with rear pillar lower end of automobile Download PDF

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JP2008213826A
JP2008213826A JP2008027566A JP2008027566A JP2008213826A JP 2008213826 A JP2008213826 A JP 2008213826A JP 2008027566 A JP2008027566 A JP 2008027566A JP 2008027566 A JP2008027566 A JP 2008027566A JP 2008213826 A JP2008213826 A JP 2008213826A
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rocker
reinforcement
section
end portion
vehicle
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JP5092777B2 (en
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Tomoyuki Orita
智幸 折田
Toshiro Kasahara
敏郎 笠原
Hiroshi Utoguchi
浩 宇都口
Junji Watanabe
純二 渡辺
Takeshi Matsuura
健 松浦
Akiyuki Hashiguchi
顕幸 橋口
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Toyota Auto Body Co Ltd
Toyota Motor Corp
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Toyota Auto Body Co Ltd
Toyota Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent any forward-collapsing deformation of a rear pillar caused by a shock by realizing a coupling part structure of a locker rear end with a rear pillar lower end having high rigidity against a shock such as an offset frontal collision of an automobile. <P>SOLUTION: In a coupling part structure of a closed section structure in which a rear end of a locker 1 of a closed section structure extending in the longitudinal direction of a vehicle body is coupled to a lower end of a rear pillar 6 having a closed section structure integrated with a front end of a rear wheel house 7, a coupling part reinforcement 3 is provided, which is composed of a first reinforcement 3a forming a lower closed section D extending so as to expand a general part of the locker 1 backwardly and a second reinforcement 3b forming a closed section E with the height being gradually increased toward the rear pillar 6 on an upper part of the first reinforcement 3a. The coupling part reinforcement 3 has a closed section structure of two upper and lower layers of the closed sections D and E. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、自動車の側面のドア開口の下縁に沿って延びるロッカーの後端部と、リヤホイールハウスの前端と一体に上方へ立ち上がるリヤピラーの下端部との結合部構造に関するものである。   The present invention relates to a joint structure of a rear end portion of a rocker extending along a lower edge of a door opening on a side surface of an automobile and a lower end portion of a rear pillar that rises upward integrally with a front end of a rear wheel house.

図３に示すように、一般に自動車は、車体側面に形成されたフロントおよびリヤドア開口９ａ，９ｂの下縁に沿って前後方向に延びるロッカー１の後端部と、リヤドア開口９ｂの後縁を形成するリヤピラー６の下端部とが結合されている。図４、図５に示すように、ロッカー１の一般部は、ロッカー外板１０とロッカー内板１１とで閉断面をなし、閉断面内にはロッカー外板１０に沿って閉断面内を車内外方向に仕切るロッカーリィンフォースメント２が設けられている。リヤピラー６の下端部はリヤホイールハウス７の前縁部と一体に形成され、ピラー外板６０とアーチ状に形成されたホイールハウス外板７０の前面部とで閉断面をなす。ロッカー１の後端部とリヤピラー６の下端部とは互いに閉断面が連通するほぼＬ字状に結合されている。   As shown in FIG. 3, in general, an automobile forms a rear end portion of a rocker 1 extending in the front-rear direction along the lower edges of front and rear door openings 9a and 9b formed on the side surface of the vehicle body, and a rear edge of the rear door opening 9b. The rear pillar 6 is connected to the lower end of the rear pillar 6. As shown in FIGS. 4 and 5, the general portion of the rocker 1 has a closed cross section with a rocker outer plate 10 and a rocker inner plate 11. A rocker reinforcement 2 for partitioning inward and outward is provided. The lower end portion of the rear pillar 6 is formed integrally with the front edge portion of the rear wheel house 7, and forms a closed cross section between the pillar outer plate 60 and the front portion of the wheel house outer plate 70 formed in an arch shape. The rear end portion of the rocker 1 and the lower end portion of the rear pillar 6 are coupled in a substantially L shape having a closed cross section communicating with each other.

ところで、車両の前面衝突時、衝突の衝撃により車体後部が跳ね上がるピッチング現象が起こり、特にオフセット前面衝突では衝突側のロッカー１の後端部とリヤピラー６の下端部との結合部が変形してリヤピラー６が前倒れ（図３の白矢印）変形するおそれがある。リヤピラーの前倒れが生じると車体前端部の破損にとどまらず車体全体が変形する。そこで従来では上記結合部内に結合部リィンフォースメント等を設けて補強することが行なわれている（例えば、特許文献１参照。）。   By the way, at the time of frontal collision of the vehicle, a pitching phenomenon in which the rear part of the vehicle body jumps up due to the impact of the collision occurs. 6 may be deformed forward (white arrow in FIG. 3). When the rear pillar is tilted forward, the entire vehicle body is deformed, not just the front end of the vehicle body. Therefore, conventionally, a coupling portion reinforcement or the like is provided in the coupling portion to reinforce (for example, see Patent Document 1).

図１０、図１１は従来の代表的な補強構造を示し、図１０ではロッカー外板およびピラー外板を省略して結合部の内部構造のみを示す。結合部ではロッカー内板の後端部１１ａの車外側に結合部リィンフォースメント３Ｋが設けられている。結合部リィンフォースメント３Ｋは車内側が開口する断面ハット形で、上面部３６０の高さがロッカー１側からリヤピラー６側へ向けて徐々に高くされた側面視ほぼＬ字屈曲状をなす。また上面部３６０の内面には補強板３６２を重ね合わせて接合されている。結合部リィンフォースメント３Ｋは上縁および下縁がロッカー内板１１に接合され、ロッカー内板の後端部１１ａとで閉断面を構成し、この閉断面をロッカー１側からリヤピラー６へ向けて連通せしめて結合部を補強することがなされている。結合部リィンフォースメント３Ｋの後端縁はホイールハウス外板７０の前面下部で閉じられている。また結合部の車外側は結合部リィンフォースメント３Ｋを覆うようにリヤピラー外板の下端部６１で閉じてある。尚、特許文献１では、結合部を補強するリィンフォースメントをリヤピラーリィンフォースメントとしており、結合部を補強するとともにピラーリィンフォースメントの上部でリヤピラーを補強するようにしている。
特開２００６−３１２３５８号公報 10 and 11 show a typical representative reinforcing structure. In FIG. 10, the locker outer plate and the pillar outer plate are omitted, and only the internal structure of the coupling portion is shown. In the coupling portion, a coupling portion reinforcement 3K is provided on the vehicle outer side of the rear end portion 11a of the rocker inner plate. The coupling portion reinforcement 3K has a hat shape in cross section that opens to the inside of the vehicle, and has a substantially L-shaped bent shape in a side view in which the height of the upper surface portion 360 is gradually increased from the rocker 1 side toward the rear pillar 6 side. A reinforcing plate 362 is overlapped and joined to the inner surface of the upper surface portion 360. The coupling portion reinforcement 3K is joined to the rocker inner plate 11 at the upper and lower edges, and forms a closed cross section with the rear end portion 11a of the rocker inner plate, and this closed cross section is directed from the rocker 1 side toward the rear pillar 6. It is made to reinforce a connecting part by communicating. The rear end edge of the coupling portion reinforcement 3 </ b> K is closed at the lower front portion of the wheel house outer plate 70. The vehicle exterior side of the coupling portion is closed by the lower end portion 61 of the rear pillar outer plate so as to cover the coupling portion reinforcement 3K. In Patent Document 1, the reinforcement that reinforces the coupling portion is a rear pillar reinforcement, and the rear pillar is reinforced at the top of the pillar reinforcement while reinforcing the coupling portion.
JP 2006-31358 A

しかしながら、従来の結合部リィンフォースメント３Ｋによる結合部の補強構造では、結合部リィンフォースメント３Ｋによる閉断面形状がロッカー側からリヤピラー側へ一連に延びる大型のため、オフセット前衝突時の衝撃に対する結合部の補強効果が十分とは言えず、衝突時の大きな衝撃で結合部リィンフォースメント３Ｋの閉断面崩れが生じ、結合部が変形しリヤピラーが前倒れ変形して、車体の変形量が大きくなるといった問題があった。   However, in the conventional reinforcement structure of the joint portion by the joint portion reinforcement 3K, the closed cross-sectional shape by the joint portion reinforcement 3K extends in a series from the rocker side to the rear pillar side, so that it is coupled to the impact at the time of the collision before the offset. The reinforcement effect of the part is not sufficient, and the joint section reinforcement 3K collapses due to a large impact at the time of collision, the joint part is deformed, the rear pillar is tilted forward, and the deformation amount of the vehicle body increases. There was a problem.

また図１２に示すように、ロッカー１の後端部とリヤピラー６の下端部との結合部ではその車外側に、リヤドア開口を開閉するリヤドアＲＤ内の下部に前後方向に設置されたインパクトビーム９１の後端が位置し、ドア閉鎖時に上記結合部とインパクビーム９１の後端とが車内外方向にラップするようにしている。
インパクトビーム８は車両の側面衝突時に、前端と後端とがセンタピラーおよびリヤピラー６に当接し、両ピラー間で突っ張ってリヤドアＲＤの車室への侵入量を軽減する役割をなす。しかしながら、インパクトビーム９１の後端と対向する上記結合部は断面形状が大きいため車外からの外力(図１１の白矢印)に対する強度が充分と言えず、車両の側面衝突時に車内側へ押し込まれたリヤドアのインパクトビーム９１後端が当ったときにその衝突荷重により上記結合部に車内側への断面崩れが生じ、リヤドアＲＤの車内側への侵入を抑制する抑制効果が充分に発揮できないと問題があった。 Further, as shown in FIG. 12, an impact beam 91 installed in the front-rear direction at the lower portion in the rear door RD that opens and closes the rear door opening is formed on the outer side of the connecting portion between the rear end portion of the rocker 1 and the lower end portion of the rear pillar 6. The rear end is positioned so that the coupling portion and the rear end of the impact beam 91 wrap in the vehicle interior and exterior direction when the door is closed.
The impact beam 8 has a front end and a rear end abutting against the center pillar and the rear pillar 6 at the time of a side collision of the vehicle, and is stretched between both pillars to reduce the amount of the rear door RD entering the vehicle compartment. However, since the connecting portion facing the rear end of the impact beam 91 has a large cross-sectional shape, it cannot be said that the strength against the external force (white arrow in FIG. 11) from the outside of the vehicle is sufficient, and it was pushed into the inside of the vehicle at the side collision of the vehicle When the rear end of the impact beam 91 of the rear door hits, the collision load causes the cross-section of the connecting portion to collapse to the inside of the vehicle, and there is a problem if the suppressing effect of suppressing the intrusion of the rear door RD to the inside of the vehicle cannot be exhibited sufficiently. there were.

そこで本発明はロッカー後端部とリヤピラー下端部との結合部を効率よく強化でき、前面衝突時の大きな衝撃により変形せずにリヤピラーの前倒れを防ぐことができ、一方、側面衝突時に車内側へ押し込まれたリヤドアのインパクトビームの後端を確実に受け止めてドアの車内側への侵入を抑制する構造を実現することを課題としてなされたものである。   Therefore, the present invention can efficiently strengthen the joint between the rear end of the rocker and the lower end of the rear pillar, and can prevent the rear pillar from tipping forward without being deformed by a large impact at the time of a frontal collision. An object of the present invention is to realize a structure that reliably receives the rear end of the impact beam of the rear door pushed into the door and prevents the door from entering the vehicle interior.

本発明は、車体の側面のドア開口の下縁に沿って前後方向に延びる閉断面構造のロッカーの後端部が、リヤホイールハウスの前端と一体のリヤピラーの下端部と結合する結合部であって、高さがロッカー側からリヤピラー側に向けて徐々に高くなる閉断面構造のロッカー後端部とリヤピラー下端部の結合部構造において、上記結合部の内部に、上記ロッカーの一般部を後方へ延長するように延びる下部閉断面をなす第１のリィンフォースメントと、第１のリィンフォースメント上に設けてリヤピラーに向けて徐々に高さが高くなる上部閉断面をなす第２のリィンフォースメントからなる結合部リィンフォースメントを設け、上記結合部リィンフォースメントを上下2層の閉断面構造とする（請求項１）。
結合部リィンフォースメントにより結合部内に上下２層の閉断面を構成したので従来構造に比べて結合部の剛性を強化できる。また直線状の第１のリィンフォースメントと後方へ立ち上がる第２のリィンフォースメントとで、結合部の形状に好適に対応できる。 The present invention is a coupling portion in which a rear end portion of a rocker having a closed cross-sectional structure extending in the front-rear direction along a lower edge of a door opening on a side surface of a vehicle body is coupled to a lower end portion of a rear pillar integrated with a front end of a rear wheel house. Thus, in the joint structure of the rocker rear end portion and the rear pillar lower end portion of the closed cross-section structure in which the height gradually increases from the rocker side toward the rear pillar side, the general portion of the rocker is moved rearward inside the joint portion. A first reinforcement having a lower closed section extending so as to extend, and a second reinforcement having an upper closed section provided on the first reinforcement and gradually increasing in height toward the rear pillar A joint reinforcement comprising the above is provided, and the joint reinforcement has a two-layer closed cross-sectional structure (claim 1).
Since the closed portion of the upper and lower layers is formed in the connecting portion by the connecting portion reinforcement, the rigidity of the connecting portion can be enhanced as compared with the conventional structure. Further, the linear first reinforcement and the second reinforcement rising rearward can suitably cope with the shape of the coupling portion.

上記ロッカーの一般部は、ロッカー外板とロッカー内板とで閉断面を形成するとともに、閉断面内には上記ロッカー外板に沿って設けられ閉断面内を車内外方向に仕切るロッカーリィンフォースメントを備える。上記結合部には、その内部を車外側と車内側とに仕切る縦壁状の仕切壁を設け、上記仕切壁の車外面の下部に上記第１のリィンフォースメントを結合して上記仕切壁とで上記下部閉断面を形成し、上記仕切壁の車外面の上部に上記第２のリィンフォースメントを結合して上記仕切壁とで上記上部閉断面を形成する（請求項２）。
仕切壁を設けてこれに第１および第２のリィンフォースメントを結合することで上下２層の閉断面構造の結合部リィンフォースメントが容易に形成される。 The general part of the rocker forms a closed cross section with a rocker outer plate and a rocker inner plate, and a rocker reinforcement that is provided along the rocker outer plate in the closed cross section and partitions the inside of the closed cross section toward the inside and outside of the vehicle. Is provided. The coupling portion is provided with a vertical wall-shaped partition wall that divides the interior into the vehicle outer side and the vehicle inner side, and the first reinforcement is coupled to the lower part of the vehicle outer surface of the partition wall, The lower closed cross section is formed, and the second reinforcement is coupled to the upper part of the outer surface of the partition wall to form the upper closed cross section with the partition wall.
By providing the partition wall and connecting the first and second reinforcements thereto, a joint reinforcement having a closed cross-sectional structure of two upper and lower layers can be easily formed.

上記第１のリィンフォースメントは車内側へ開口する断面ほぼハット形で上下の開口縁を上記仕切壁の車外面に接合し、仕切壁とで上記下部閉断面を形成する。上記第２のリィンフォースメントは断面ほぼ逆Ｌ字形で、一方の端縁を上記仕切壁の車外面の上部に接合するとともに他方の端縁を上記第１のリィンフォースメントの車外側の上縁に接合して、上記仕切壁および第１のリィンフォースメントの上部とで上記上部閉断面を形成し、上記仕切壁と、第１および第２のリィンフォースメントとで上下２層の閉断面構造を形成する（請求項３）。
仕切壁と第１および第２のリィンフォースメントとで２層の断面構造を構成するのに、第１のリィンフォースメントをハット形とし、第２のリィンフォースメントを逆Ｌ字形とするのが好適である。 The first reinforcement has a substantially hat-shaped cross section that opens to the inside of the vehicle, and upper and lower opening edges are joined to the vehicle outer surface of the partition wall to form the lower closed cross section with the partition wall. The second reinforcement is substantially L-shaped in cross section, and one end edge is joined to the upper part of the outer surface of the partition wall and the other end is the upper edge of the first reinforcement on the vehicle exterior. The upper closed section is formed by the partition wall and the upper part of the first reinforcement, and the upper and lower two-layer closed section structure is formed by the partition wall and the first and second reinforcements. (Claim 3).
The partition wall and the first and second reinforcements form a two-layer cross-sectional structure. The first reinforcement is a hat shape, and the second reinforcement is an inverted L shape. Is preferred.

上記第１のリィンフォースメントおよび上記第２のリィンフォースメントの前端縁を上記ロッカーリィンフォースメントの後端縁と接合せしめる（請求項４）。
ロッカーリィンフォースメントと結合部リィンフォースメントを一連に結合することで結合部リィンフォースメントの剛性が一層強化される。 The front end edges of the first reinforcement and the second reinforcement are joined to the rear end edges of the rocker reinforcement.
The rigidity of the joint reinforcement is further strengthened by connecting the rocker reinforcement and the joint reinforcement in series.

また本発明は、車体の側面のドア開口の下縁に沿って前後方向に延びる閉断面構造のロッカーの後端部が、リヤホイールハウスの前端と一体のリヤピラーの下端部と結合する結合部であって、高さがロッカー側からリヤピラー側に向けて徐々に高くなる閉断面構造のロッカー後端部とリヤピラー下端部の結合部構造において、上記結合部の内部に、閉断面を形成し、高さがロッカー側からリヤピラー側に向けて徐々に高くなる結合部リィンフォースメントを設け、該結合部リィンフォースメントの上下中間位置に前後方向水平に延びる中間壁を設け、上記結合部リィンフォースメントの下部に上記ロッカーの一般部を後方へ延長するように延びる下部閉断面と、上部に上記リヤピラーに向けて徐々に高さが高くなる上部閉断面を形成して結合部リィンフォースメントを上下２層の閉断面構造とする（請求項５）。
結合部を、結合部リィンフォースメントおよび中間壁により上下２層の閉断面を構成したので従来構造に比べて結合部の剛性を強化できる。また結合部リィンフォースメントの内部を中間壁により上下に仕切ることで、上下２層の閉断面構造に好適に対応できる。 Further, the present invention is a coupling portion in which the rear end portion of the rocker having a closed cross-sectional structure extending in the front-rear direction along the lower edge of the door opening on the side surface of the vehicle body is coupled to the lower end portion of the rear pillar integrated with the front end of the rear wheel house. In the connecting portion structure of the rocker rear end portion and the rear pillar lower end portion of the closed cross section structure in which the height gradually increases from the rocker side toward the rear pillar side, a closed cross section is formed inside the connecting portion, and the height is increased. A joint reinforcement that gradually increases from the rocker side toward the rear pillar side is provided, and an intermediate wall that extends horizontally in the front-rear direction is provided at an upper and lower intermediate position of the joint reinforcement, and the joint reinforcement A lower closed section that extends so that the general part of the rocker extends backward, and an upper closed section that gradually increases in height toward the rear pillar is formed at the bottom. The reinforcement member and closed cross section of the upper and lower layers (claim 5).
Since the joint portion is composed of two upper and lower closed sections by the joint reinforcement and the intermediate wall, the rigidity of the joint portion can be enhanced compared to the conventional structure. Further, by dividing the interior of the coupling portion reinforcement up and down by an intermediate wall, it is possible to suitably cope with a closed cross-sectional structure of two upper and lower layers.

上記ロッカーの一般部は、ロッカー外板とロッカー内板とで閉断面を形成するとともに、閉断面内には上記ロッカー外板に沿って設けられ閉断面内を車内外方向に仕切るロッカーリィンフォースメントを備える。上記結合部には、その内部を車外側と車内側とに仕切る縦壁状の仕切壁を設け、上記仕切壁の車外面に、車内側へ開口する断面ほぼハット形をなす上記結合部リィンフォースメントの上下の開口縁を接合して、結合部リィンフォースメントと上記仕切壁とで閉断面構造をなす。板体からなる上記中間壁は、一方の端縁を上記結合部リィンフォースメントの車内面に接合するとともに他方の端縁を上記仕切壁の車外面に接合して、上記下部閉断面および上記上部閉断面を形成するように設置し、上記仕切壁と上記結合部リィンフォースメントおよび上記中間壁とで上下２層の閉断面構造を形成する（請求項６）。
仕切壁を設けてこれに結合部リィンフォースメントおよび中間壁を結合することで上下２層の閉断面構造が容易に形成される。 The general part of the rocker forms a closed cross section with a rocker outer plate and a rocker inner plate, and a rocker reinforcement that is provided along the rocker outer plate in the closed cross section and partitions the inside of the closed cross section toward the inside and outside of the vehicle. Is provided. The coupling portion is provided with a vertical wall-shaped partition wall that divides the interior into the vehicle outer side and the vehicle inner side, and the coupling portion reinforcement having a substantially hat-shaped cross section that opens to the vehicle inner side on the vehicle outer surface of the partition wall The upper and lower opening edges of the attachment are joined together to form a closed cross-sectional structure with the joint reinforcement and the partition wall. The intermediate wall made of a plate body has one end edge joined to the vehicle inner surface of the coupling portion reinforcement and the other edge joined to the vehicle outer surface of the partition wall so that the lower closed cross section and the upper portion are joined. It is installed so as to form a closed cross section, and the partition wall, the joint reinforcement and the intermediate wall form a closed cross section structure of two upper and lower layers.
By providing the partition wall and connecting the coupling portion reinforcement and the intermediate wall to the partition wall, a closed cross-sectional structure of two upper and lower layers can be easily formed.

上記結合部リィンフォースメントおよび上記中間壁の前端縁を上記ロッカーリィンフォースメントの後端縁と接合せしめる（請求項７）。
結合部リィンフォースメントの剛性が一層強化される。 The joint reinforcement and the front end edge of the intermediate wall are joined to the rear end edge of the rocker reinforcement (Claim 7).
The rigidity of the joint reinforcement is further enhanced.

上記結合部の車外側には上記上部閉断面に対応する位置に、上記ドア開口を開閉するドアの内部に前後方向に設置されたドアインパクトビームの後端が配置され、また上記結合部の車内側には上記ロッカー内板の車内側の側面に沿って、車両前後方向に延びるリヤサイドメンバの前端部が接合される。上記ロッカー内板と上記仕切壁と間には上記上部閉断面の車内側の位置に、上記仕切壁の車内面とで閉断面をなすバルクヘッドを設ける（請求項８）。
結合部の車内側にバルクヘッドにより閉断面を形成したので、より結合部の剛性が強化され、特に、車幅方向に作用する衝突荷重に対する剛性が発揮される。 A rear end of a door impact beam installed in the front-rear direction is disposed inside the door that opens and closes the door opening at a position corresponding to the upper closed cross section on the vehicle exterior side of the coupling portion. A front end portion of a rear side member extending in the vehicle front-rear direction is joined to the inner side along the side surface of the rocker inner plate on the vehicle inner side. A bulkhead having a closed section with the inner surface of the partition wall is provided between the inner plate of the rocker and the partition wall at a position inside the vehicle of the upper closed section.
Since the closed cross section is formed by the bulkhead on the inner side of the coupling portion, the rigidity of the coupling portion is further strengthened, and in particular, the rigidity against a collision load acting in the vehicle width direction is exhibited.

上記バルクヘッドは車外側に向けて開口する断面ハット形をなし、上部開口縁を上記第２のリィンフォースメントまたは上記結合部リィンフォースメントの上縁に対する位置で上記仕切壁の車内面に接合するとともに、下部開口縁を上記第１のリィンフォースメントの上縁または上記中間壁に対応する位置で上記仕切壁の車内面に接合せしめる（請求項９）。
バルクヘッドにより結合部の車内側に閉断面を好適に形成でき、特に車内側の閉断面と上記上部閉断面とが相まって側突時の衝突荷重に対して高い剛性を発揮できる。 The bulkhead has a cross-sectional hat shape that opens toward the outside of the vehicle, and the upper opening edge is joined to the inner surface of the partition wall at a position relative to the upper edge of the second reinforcement or the coupling reinforcement. At the same time, the lower opening edge is joined to the inner surface of the partition wall at a position corresponding to the upper edge of the first reinforcement or the intermediate wall.
The closed section can be suitably formed on the inner side of the coupling portion by the bulkhead, and in particular, the closed section on the inner side of the vehicle and the upper closed section can be combined to exhibit high rigidity against a collision load at the time of a side collision.

図３に示す車体のロッカー１の後端部とリヤピラー６の下端部とが結合された結合部に本発明を適用した第１の実施形態を説明する。ロッカー１は車体の側面下縁に沿って前後方向に延び、フロントドア開口９ａおよびリヤドア開口９ｂの開口下縁を構成している。図４に示すように、ロッカー１の一般部は車内側へ開口する断面ほぼハット形のロッカー外板１０と車外側へ開口する断面ほぼハット形のロッカー内板１１とを互いに対向せしめて上縁および下縁のフランジ同士を重ね合わせて溶接した閉断面構造をなす。   A first embodiment in which the present invention is applied to a joint portion where the rear end portion of the rocker 1 of the vehicle body shown in FIG. 3 and the lower end portion of the rear pillar 6 are joined will be described. The locker 1 extends in the front-rear direction along the lower side edge of the vehicle body, and constitutes the lower opening edge of the front door opening 9a and the rear door opening 9b. As shown in FIG. 4, the general portion of the rocker 1 has an upper edge with a rocker outer plate 10 having a substantially hat-shaped cross section opening to the inside of the vehicle and a rocker inner plate 11 having a substantially hat-shaped cross section opening to the outside of the vehicle facing each other. A closed cross-sectional structure is formed by overlapping and welding the flanges on the lower edge.

ロッカー１の一般部の内部にはその閉断面を車内外方向に仕切るロッカーリィンフォースメント２が設けてある。ロッカーリィンフォースメント２はロッカー外板１０の内面に沿うように断面ほぼハット形をなし、上縁および下縁の結合フランジをロッカー外板１０および内板１１の上下のフランジ間に挟み込んで一体に溶接してある。   A locker reinforcement 2 is provided inside the general portion of the locker 1 to partition the closed cross section in the vehicle interior / exit direction. The rocker reinforcement 2 has a substantially hat-shaped cross section along the inner surface of the rocker outer plate 10, and the upper and lower edge coupling flanges are sandwiched between the upper and lower flanges of the rocker outer plate 10 and the inner plate 11. Welded.

リヤピラー６は上記リヤドア開口９ｂの後方に位置するクォータパネル９０と一体に形成してあり、かつリヤピラー６の下端部はリヤホイールハウス７の前縁と一体に形成してある。図５に示すように、リヤピラー６の下端部は、クォータパネル９０の前縁下端部からなるピラー外板６０と、リヤホイールハウス７のアーチ状をなすホイールハウス外板７０の前面部とからなり、ピラー外板６０とホイールハウス外板７０との車内側および車外側の結合フランジどうしを重ね合わせて溶接して縦方向に延びる閉断面をなす。図５の７１はホイールハウス内板を表す。   The rear pillar 6 is formed integrally with the quarter panel 90 located behind the rear door opening 9 b, and the lower end portion of the rear pillar 6 is formed integrally with the front edge of the rear wheel house 7. As shown in FIG. 5, the lower end portion of the rear pillar 6 includes a pillar outer plate 60 that is a lower end portion of the front edge of the quarter panel 90 and a front portion of the wheel house outer plate 70 that forms an arch shape of the rear wheel house 7. The inner and outer coupling flanges of the pillar outer plate 60 and the wheel house outer plate 70 are overlapped and welded to form a closed section extending in the longitudinal direction. Reference numeral 71 in FIG. 5 denotes a wheel house inner plate.

以下、図１、図２に基いて本発明のロッカー１の後端部とリヤピラー６の下端部との結合部（以下、単に結合部という）の構造を説明する。図１（Ａ）は結合部の内部の側面図を示し、ロッカー１およびリヤピラー６の外板をともに省略したもので、図１（Ｂ）は図１（Ａ）のIB−IB線に沿う断面図である。図２は結合部の構成部材を示す分解斜視図で、ロッカー１の外板を省略したものである。   Hereinafter, the structure of a connecting portion (hereinafter simply referred to as a connecting portion) between the rear end portion of the rocker 1 of the present invention and the lower end portion of the rear pillar 6 will be described with reference to FIGS. FIG. 1 (A) shows a side view of the inside of the coupling portion, in which both the rocker 1 and the outer plate of the rear pillar 6 are omitted, and FIG. 1 (B) is a cross section taken along line IB-IB in FIG. 1 (A). FIG. FIG. 2 is an exploded perspective view showing constituent members of the coupling portion, in which the outer plate of the rocker 1 is omitted.

結合部はその車内側の内板がロッカー内板１１の後端部１１ａで構成してある。ロッカー内板１１の後端部１１ａはロッカー内板１１の一般部側から後方へ向けて徐々に上下幅が上方へ高くしてあり、後端部１１ａの上縁後端はリヤピラー側へ延ばしてある。尚、ロッカー外板１０およびロッカーリィンフォースメント２は上下幅が広くなるロッカー内板１１の後端部１１ａよりも手前の位置まで設置してあり、それよりも後方の結合部側までは延びていない。   As for the coupling part, the inner plate inside the vehicle is constituted by the rear end portion 11 a of the rocker inner plate 11. The rear end portion 11a of the rocker inner plate 11 is gradually increased upward and downward from the general portion side of the rocker inner plate 11 to the rear, and the upper edge rear end of the rear end portion 11a extends to the rear pillar side. is there. The rocker outer plate 10 and the rocker reinforcement 2 are installed up to a position in front of the rear end portion 11a of the rocker inner plate 11 having a wider vertical width, and extend to the rear coupling portion side. Absent.

ロッカー内板11の後端部１１ａの車外側には後端部１１ａの車外側の開口を塞ぐように縦壁状の仕切壁４が設けてある。仕切壁４は、後端部１１ａに合わせて上下幅を後方へ向けて徐々に拡大した形状の平板で、上縁および下縁が後端部１１ａの上縁および下縁のフランジに重ね合わせて溶接してあり、後端部１１ａと仕切壁４とは結合部の車内側位置に閉断面を形成している。尚、後端部１１ａと仕切壁４との閉断面の後端はその後方に位置するリヤホイールハウス７のホイールハウス内板７１（図５）の前面部により閉じてある。   A partition wall 4 having a vertical wall shape is provided on the vehicle outer side of the rear end portion 11a of the rocker inner plate 11 so as to close the opening on the vehicle outer side of the rear end portion 11a. The partition wall 4 is a flat plate having a shape in which the vertical width is gradually enlarged rearward in accordance with the rear end portion 11a, and the upper edge and the lower edge are overlapped with the upper edge and lower edge flanges of the rear end portion 11a. It is welded and the rear end part 11a and the partition wall 4 form the closed cross section in the vehicle inside position of a connection part. The rear end of the closed section of the rear end portion 11a and the partition wall 4 is closed by the front portion of the wheel house inner plate 71 (FIG. 5) of the rear wheel house 7 located behind the rear end portion 11a.

仕切壁４の車外面には、結合部リィンフォースメント３が設けてある。結合部リィンフォースメント３は下側の第１のリィンフォースメント３ａと、これとは別体の上側の第２のリィンフォースメント３ｂとで上下２段構造をなす。   A coupling portion reinforcement 3 is provided on the outer surface of the partition wall 4. The coupling portion reinforcement 3 forms a two-stage structure with a lower first reinforcement 3a and a second reinforcement 3b, which is separate from the first reinforcement 3a.

第１のリィンフォースメント３ａは、ロッカーリィンフォースメント２の断面形状に合わせて車内側へ向けて開口する断面ほぼハット形に形成してあり、前端側の上下幅と後端側の上下幅とがほぼ同幅となるように前後方向にほぼ直線状に延設してある。   The first reinforcement 3a is formed in a substantially hat-shaped cross section that opens toward the inside of the vehicle in accordance with the cross-sectional shape of the rocker reinforcement 2, and includes a vertical width on the front end side and a vertical width on the rear end side. Are substantially linearly extended in the front-rear direction so as to have substantially the same width.

第１のリィンフォースメント３ａは、上縁の結合フランジ３０を仕切壁４の上下中間位置の車外面に重ね合わせて溶接するとともに、下縁の結合フランジ３１を仕切壁４の下縁の車外面に重ね合わせて仕切壁４の下縁とロッカー内板の後端部１１ａの下縁結合フランジと一体に溶接してあり、仕切壁４の下部とで閉断面Ｄを形成している。   The first reinforcement 3 a has an upper edge coupling flange 30 overlapped and welded to the vehicle outer surface at the upper and lower intermediate positions of the partition wall 4, and a lower edge coupling flange 31 is connected to the vehicle outer surface of the lower edge of the partition wall 4. Are overlapped with the lower edge of the partition wall 4 and the lower edge coupling flange of the rear end portion 11a of the rocker inner plate and are integrally welded to form a closed section D with the lower portion of the partition wall 4.

また第１のリィンフォースメント３ａはその前端縁３４ａがロッカーリィンフォースメント２の後端縁２３と連結してあり、これにより下部閉断面Ｄはロッカー１一般部の内板１１とロッカーリィンフォースメント２とからなる閉断面の車外側半部と連通し、上記ロッカー側の閉断面の車外側半部を後方へ延長する。   The first reinforcement 3a has a front end edge 34a connected to the rear end edge 23 of the rocker reinforcement 2 so that the lower closed section D has an inner plate 11 of the rocker 1 general part and a rocker reinforcement. 2 is communicated with the outer half of the closed cross section consisting of 2 and the rear outer half of the closed cross section on the rocker side is extended rearward.

第１のリィンフォースメント３ａの直上に設置する第２のリィンフォースメント３ｂは、第１のリィンフォースメント３ａの上面部３２とほぼ同じ車幅方向の横幅を有し、前後方向には上面部３２とほぼ同じか若干短い長さに形成してある。第２のリィンフォースメント３ｂは車外側に縦壁状の側壁３５を備え、その上縁から屈曲して車内側へ張り出す上壁３６とで断面ほぼ逆Ｌ字形をなす。側壁３５はその上縁を仕切壁４の上縁に対応して前側から後方へ向けて徐々に高くして、側壁３５後端の上下幅が上方へ高く形成してある。側壁３５の上縁に沿って屈曲せしめた上壁３６は後方かつ上方へ向けて緩やかに傾斜する傾斜面をなす。   The second reinforcement 3b installed immediately above the first reinforcement 3a has substantially the same lateral width in the vehicle width direction as the upper surface 32 of the first reinforcement 3a, and the upper surface in the front-rear direction. The length is almost the same as or slightly shorter than 32. The second reinforcement 3b includes a side wall 35 having a vertical wall shape on the outer side of the vehicle, and has a substantially inverted L-shaped cross section with an upper wall 36 that bends from the upper edge and projects toward the inner side of the vehicle. The upper edge of the side wall 35 is gradually increased from the front side to the rear side corresponding to the upper edge of the partition wall 4, and the vertical width of the rear end of the side wall 35 is increased upward. The upper wall 36 bent along the upper edge of the side wall 35 forms an inclined surface that is gently inclined rearward and upward.

第２のリィンフォースメント３ｂには、上壁３６の車内側の側縁に沿って上方へ屈曲形成した結合フランジ３７が設けてあり、また側壁３５の下縁にはこれに沿って第１のリィンフォースメント３ａの側面部３３の上縁に対応する接合部３８が設けてある。尚、接合部３８の後半部は、第２のリィンフォースメント３ｂの横幅よりも若干車外側へ横幅を広くした第１のリィンフォースメント３ａの側面部３３の上縁後端に合わせて車外側へ膨出形成してある。   The second reinforcement 3b is provided with a coupling flange 37 bent upward along the side edge on the vehicle inner side of the upper wall 36, and the lower edge of the side wall 35 has a first flange along the first flange 3b. A joint portion 38 corresponding to the upper edge of the side surface portion 33 of the reinforcement 3a is provided. Note that the rear half of the joint portion 38 is aligned with the rear edge of the upper edge of the side portion 33 of the first reinforcement 3a that is slightly wider to the vehicle outer side than the width of the second reinforcement 3b. The bulge is formed.

第２のリィンフォースメント３ｂは、上縁の結合フランジ３７を仕切壁４の上縁に沿うように仕切壁４の車外面の上部に重ね合わせて溶接するとともに、第１のリィンフォースメント３ａの上面部３２を覆い、側壁３５下縁の接合部３８を第１のリィンフォースメント３ａの側面部３３の車外上縁に沿って重ね合わせて溶接してある。これにより第２のリィンフォースメント３ｂは、仕切壁４および第１のリィンフォースメント３ａの上面部３２とで閉断面Ｅを形成している。これにより第１および第２のリィンフォースメント３ａ，３ｂからなる結合部リィンフォースメント３は両リィンフォースメント３ａ，３ｂの下部および上部閉断面Ｄ，Ｅにより上下２層の閉断面構造を形成してある。   The second reinforcement 3b is formed by superimposing and welding the upper flange flange 37 along the upper edge of the partition wall 4 along the upper edge of the partition wall 4 and also welding the first reinforcement 3a. The upper surface portion 32 is covered, and the joint portion 38 at the lower edge of the side wall 35 is overlapped and welded along the upper outer edge of the side surface portion 33 of the first reinforcement 3a. As a result, the second reinforcement 3b forms a closed section E with the partition wall 4 and the upper surface portion 32 of the first reinforcement 3a. As a result, the joint reinforcement 3 composed of the first and second reinforcements 3a and 3b forms a closed sectional structure of two upper and lower layers by the lower and upper closed sections D and E of the reinforcements 3a and 3b. It is.

第２のリィンフォースメント３ｂの前端縁３４ｂは、第１のリィンフォースメント３ａとロッカーリィンフォースメント２の結合部またはその付近で、第１のリィンフォースメント３ａの上面部３２の前端に重ね合わせて溶接してあり、閉断面Ｅの前端は閉じてある。閉断面Ｅの側面視形状は、ロッカー１側からリヤピラー６側へ向けて徐々に高さ寸法を高くしてピラー６側へ拡大するように形成してある。   The front edge 34b of the second reinforcement 3b is overlapped with the front end of the upper surface portion 32 of the first reinforcement 3a at or near the connecting portion of the first reinforcement 3a and the rocker reinforcement 2. And the front end of the closed section E is closed. The side view shape of the closed cross section E is formed so that the height dimension is gradually increased from the rocker 1 side toward the rear pillar 6 side and is expanded toward the pillar 6 side.

上下に配置した両閉断面Ｄ，Ｅの後端はホイールハウス外板７０の前面部で閉じてある。即ち、第１のリィンフォースメント３ａは上面部３２の後縁に形成した結合フランジ３９ａをホイールハウス外板７０の前面部の下端付近に溶接するとともに、側面部３３後縁の結合部３９ｂをホイールハウス外板７０の前面部の車外側の側縁フランジに溶接してある。第２のリィンフォースメント３ｂは側壁３５および上壁３６の後縁に形成した結合フランジ３９ｃをホイールハウス外板７０の前面部の上下中間位置に溶接してある。   The rear ends of both closed sections D and E arranged vertically are closed at the front surface of the wheel house outer plate 70. That is, the first reinforcement 3a welds the coupling flange 39a formed at the rear edge of the upper surface portion 32 to the vicinity of the lower end of the front surface portion of the wheel house outer plate 70, and the coupling portion 39b at the rear edge of the side surface portion 33 to the wheel. It is welded to the side edge flange on the vehicle outer side of the front portion of the house skin 70. In the second reinforcement 3b, a coupling flange 39c formed at the rear edges of the side wall 35 and the upper wall 36 is welded to an upper and lower intermediate position of the front surface portion of the wheel house outer plate 70.

ロッカー１とリヤピラー６との結合部ではその車外側の外板を、リヤピラー外板６０の下端から屈曲して端末を前方へ延長した側面視ほぼＬ字状をなす下端部６１で構成してあり、下端部６１により第１および第２のリィンフォースメント３ａ，３ｂを覆い隠すようにしてある。下端部６１の断面形状はロッカー１一般部のロッカー外板１０（図４）の断面形状に合わせてある。下端部６１はその上縁の結合フランジ６１１をロッカー内板１１の後端部１１ａの上縁と仕切壁４との上縁と結合部と一体に溶接するとともに、下縁の結合フランジ６１２を後端部１１ａおよび仕切壁４の下縁と第１のリィンフォースメント３ａの下縁結合フランジ３１と一体の溶接してあり、更に下端部６１の前端縁はロッカー外板の後縁に結合してある。   At the joint between the rocker 1 and the rear pillar 6, the outer plate on the outside of the vehicle is composed of a lower end portion 61 that is bent from the lower end of the rear pillar outer plate 60 and has a terminal that extends forward, and is substantially L-shaped in side view. The first and second reinforcements 3a and 3b are covered by the lower end 61. The cross-sectional shape of the lower end portion 61 is matched with the cross-sectional shape of the rocker outer plate 10 (FIG. 4) of the rocker 1 general portion. The lower end 61 welds the upper edge coupling flange 611 integrally with the upper edge of the rear end portion 11a of the rocker inner plate 11, the upper edge of the partition wall 4, and the coupling portion, and also lowers the lower edge coupling flange 612. The end 11a and the lower edge of the partition wall 4 are welded integrally with the lower edge coupling flange 31 of the first reinforcement 3a, and the front end edge of the lower end 61 is joined to the rear edge of the rocker outer plate. is there.

本実施形態によれば、ロッカー１の後端とリヤピラー６の下端との結合部を補強する結合部リィンフォースメント３を上下２段の第１および第２のリィンフォースメント３ａ，３ｂとで構成し、これらにより上下２層の閉断面Ｄ，Ｅを形成したので、従来の結合部リィンフォースメント３Ｋによる閉断面に比べて各閉断面Ｄ，Ｅを小型化できる。更に下方の下部閉断面Ｄはロッカー１一般部の閉断面を直線状に後方へ連通するように形成し、その上方の閉断面Ｅをリヤピラー６側へ突出するように形成したので、両閉断面Ｄ，Ｅが結合部の内部形状に合致している。従って、車両衝突時の衝撃に対する結合部の剛性を強化することができ、車両のオフセット前面衝突などの大きな衝撃でもリヤピラー６の前倒れ変形を防止することができる。   According to the present embodiment, the coupling portion reinforcement 3 that reinforces the coupling portion between the rear end of the rocker 1 and the lower end of the rear pillar 6 includes the upper and lower two-stage first and second reinforcements 3a and 3b. Since the two upper and lower closed cross sections D and E are thus formed, each closed cross section D and E can be reduced in size as compared with the closed cross section by the conventional coupling reinforcement 3K. Further, the lower closed section D below is formed so that the closed section of the rocker 1 general section communicates linearly rearward, and the upper closed section E is formed so as to project to the rear pillar 6 side. D and E match the internal shape of the joint. Therefore, the rigidity of the coupling portion against an impact at the time of a vehicle collision can be strengthened, and the rear pillar 6 can be prevented from being deformed forward even by a large impact such as an offset frontal collision of the vehicle.

結合部では断面ハット形のロッカー内板１１の後端部１１ａの車外側に平板からなる仕切壁４を設けてこれに第１および第２のリィンフォースメント３ａ，３ｂをそれぞれ接合するようにしたので、これらのパネル構成を簡素にでき、仕切壁４への両リィンフォースメント３ａ，３ｂの接合作業を容易にでき、好適に上下２層の閉断面Ｄ，Ｅを形成することができる。またロッカー内板１１の後端部１１ａと仕切壁４とで結合部の車内側に閉断面を形成でき、これと車外側の閉断面Ｄ，Ｅとが相まってより高い結合部の補強効果が発揮される。
また下部および上部閉断面Ｄ，Ｅは断面形状が小型となるので、前面衝突の衝撃に対する剛性とともに、車両側面衝突時に車幅方向に作用する衝撃に対する剛性も向上する。 In the joint portion, a partition wall 4 made of a flat plate is provided outside the rear end portion 11a of the rocker inner plate 11 having a hat-shaped cross section, and the first and second reinforcements 3a and 3b are joined to the partition wall 4, respectively. Therefore, these panel configurations can be simplified, the joining work of the reinforcements 3a and 3b to the partition wall 4 can be facilitated, and the closed sections D and E having two upper and lower layers can be preferably formed. Further, the rear end portion 11a of the rocker inner plate 11 and the partition wall 4 can form a closed cross section on the vehicle inner side of the coupling portion, and this, together with the closed cross sections D and E on the vehicle outer side, provide a higher reinforcing effect on the coupling portion. Is done.
In addition, since the lower and upper closed cross sections D and E are small in cross-sectional shape, the rigidity against the impact of the frontal collision and the rigidity against the impact acting in the vehicle width direction at the time of the vehicle side collision are improved.

次に図６に基いて、側面衝突の衝撃に対して上述の実施形態よりも有効な第２の実施形態を説明する。本実施形態の基本構造は第１の実施形態のそれとほぼ同じで、相違点を中心に説明する。図６において同一部材は同一符号で表し、それらの説明を省略する。
ロッカー１の車外側には、仕切壁４と第１のリィンフォースメント３ａの上面部および第２のリィンフォースメント３ｂで形成した上部閉断面Ｅの車外側に、リヤドア開口を開閉するリヤドアＲＤの内部に前後方向に設置されたインパクトビーム９１の後端が車内方向に対向するように配置される。 Next, a second embodiment that is more effective than the above-described embodiment with respect to the impact of a side collision will be described with reference to FIG. The basic structure of this embodiment is almost the same as that of the first embodiment, and differences will be mainly described. In FIG. 6, the same members are denoted by the same reference numerals, and description thereof is omitted.
A rear door RD that opens and closes the rear door opening is formed on the vehicle outer side of the locker 1 on the vehicle outer side of the upper closed section E formed by the partition wall 4 and the upper surface portion of the first reinforcement 3a and the second reinforcement 3b. The rear end of the impact beam 91 installed in the front-rear direction is arranged so as to face the in-vehicle direction.

ロッカー１の車内側には、ロッカー内板の後端部１１ａの上半部に沿って車両前後方向に延びるリヤサイドメンバ８０の前端部が接合してある。リヤサイドメンバ８０は断面ほぼ逆ハット形で、左右の上縁フランジを車室フロア８１の下面に結合して、車室フロア８１とで閉断面構造をなす。リヤサイドメンバ８０はその前端の車外側の側面をロッカー内板の後端部１１ａの上半部に結合してある。   A front end portion of a rear side member 80 extending in the vehicle front-rear direction is joined to the vehicle inner side of the rocker 1 along the upper half portion of the rear end portion 11a of the rocker inner plate. The rear side member 80 has a substantially inverted hat shape in cross section, and the left and right upper edge flanges are coupled to the lower surface of the passenger compartment floor 81 to form a closed sectional structure with the passenger compartment floor 81. The rear side member 80 has a front side outer side surface coupled to the upper half of the rear end portion 11a of the rocker inner plate.

そしてロッカー１の仕切壁４とロッカー内板の後端部１１ａとからなる閉断面の上半部には、上部閉断面Ｅとリヤサイドメンバ８０の前端部との間に、仕切壁４とで閉断面Ｆを形成するバルクヘッド５が設置してある。バルクヘッド５は車外側に向けて開口する断面ハット形で、上壁５１と下壁５２およびこれらの車内側の端縁間を上下につないだ側壁５３を備えている。
バルクヘッド５は、その上縁の結合フランジ５４を車外側の第２のリィンフォースメント３ｂの上縁の結合フランジ３７と対向する位置で仕切壁４の車内面上部にロッカー内板の後端部１１ａの上縁フランジと一体に結合するとともに、下縁の結合フランジ５５を車外側の第１のリィンフォースメント３ａの上縁の結合フランジ３０と対向する位置で仕切壁４の車内側中間部に結合してある。バルクヘッド５の側壁５３はロッカー内板後端部１１ａの上半部に近接対向してある。 Then, the upper half of the closed cross section composed of the partition wall 4 of the rocker 1 and the rear end portion 11 a of the rocker inner plate is closed by the partition wall 4 between the upper closed cross section E and the front end portion of the rear side member 80. A bulkhead 5 forming a cross section F is installed. The bulkhead 5 has a hat-shaped cross section that opens toward the outside of the vehicle, and includes an upper wall 51, a lower wall 52, and a side wall 53 that vertically connects the inner edges of the vehicle.
The bulkhead 5 has a rear end portion of the rocker inner plate at the upper part of the inner surface of the partition wall 4 at a position where the upper flange flange 54 faces the upper flange flange 37 of the second reinforcement 3b outside the vehicle. 11a and the upper edge flange of the partition wall 4 at a position facing the upper flange flange 30a of the first reinforcement 3a on the vehicle exterior side. It is connected. The side wall 53 of the bulkhead 5 is close to and opposed to the upper half of the rocker inner plate rear end portion 11a.

車両の側面衝突時に、衝突相手によりリヤドアＲＤが車内側へ押し込まれると、ロッカー１にはその第２のリィンフォースメント３ｂの側壁３５にリヤドアＲＤ内のインパクトビーム９０の後端が当たる。この場合、インパクトビーム９０の衝突位置に対応して、ロッカー１の内部には上部閉断面Ｅおよび仕切壁４とバルクヘッド５からなる閉断面Ｆを車幅方向に形成したので車内側に向かって作用するインパクトビーム９０からの衝突荷重に対するロッカー１の剛性が高く、上記衝突荷重に抗してロッカー１の第１および第２のリィンフォースメント３ａ，３ｂの上面部３２と上壁３６，更に仕切壁４を介してバルクヘッド５の上壁５１および下壁５２が突っ張って、これらにより上記衝突荷重を車内側のリヤサイドメンバ８０側へ受け流し、ロッカー１の車内側への断面崩れを防止できる。従って、ロッカー１により確実にインパクトビーム９０の後端を受け止め、もってリヤドアＲＤの車内側への移動変形を抑制することができる。   When the rear door RD is pushed into the vehicle by the collision partner during a side collision of the vehicle, the rear end of the impact beam 90 in the rear door RD hits the side wall 35 of the second reinforcement 3b of the rocker 1. In this case, the upper closed cross section E and the closed cross section F composed of the partition wall 4 and the bulkhead 5 are formed in the interior of the rocker 1 in the vehicle width direction so as to correspond to the collision position of the impact beam 90. The rigidity of the rocker 1 with respect to the collision load from the acting impact beam 90 is high, and the upper surface portion 32 and the upper wall 36 of the first and second reinforcements 3a and 3b of the rocker 1 against the collision load, and further the partition The upper wall 51 and the lower wall 52 of the bulkhead 5 are stretched through the wall 4, so that the collision load can be received on the rear side member 80 side inside the vehicle, and the cross-section collapse of the rocker 1 toward the vehicle inside can be prevented. Accordingly, the rear end of the impact beam 90 can be reliably received by the locker 1, and the rear door RD can be prevented from being deformed to the inside of the vehicle.

次に図７、図８に基いて本発明の第３の実施形態を説明する。なお、基本構造は上述の第１の実施形態のそれとほぼ同じで、相違点を中心に説明し、図において同一部材は同一符号で表す。
ロッカー１の後端には、仕切壁４の車外側に仕切壁４とで閉断面をなす結合部リィンフォースメント３Ｃが設けてある。結合部リィンフォースメント３Ｃは、ロッカーリィンフォースメント２の断面形状に合わせて車内側へ向けて開口する断面ほぼハット形に形成してあり、前端側の上下幅はロッカーリィンフォースメント２の後端の上下幅とほぼ同幅としてある。
結合部リィンフォースメント３Ｃの側面部３３ａはその上縁を仕切壁４の上縁に対応して前側から後方へ向けて徐々に高くして、側面部３３ａ後端の上下幅が上方へ高く形成してある。側面部３３ａの上縁に沿って車内側へ屈曲せしめた上面部３２ａは後方かつ上方に向けて緩やかに傾斜する傾斜面をなす。 Next, a third embodiment of the present invention will be described with reference to FIGS. The basic structure is substantially the same as that of the first embodiment described above, and the differences will be mainly described. In the drawings, the same members are denoted by the same reference numerals.
At the rear end of the locker 1, a joint reinforcement 3 </ b> C that forms a closed section with the partition wall 4 is provided on the vehicle exterior side of the partition wall 4. The coupling portion reinforcement 3 </ b> C is formed in a substantially hat-shaped cross section that opens toward the vehicle interior in accordance with the cross-sectional shape of the rocker reinforcement 2, and the vertical width on the front end side is the rear end of the rocker reinforcement 2. The width is almost the same as the top and bottom width.
The side portion 33a of the coupling portion reinforcement 3C is formed so that its upper edge is gradually increased from the front side to the rear side corresponding to the upper edge of the partition wall 4, and the vertical width of the rear end of the side portion 33a is increased upward. It is. The upper surface portion 32a bent toward the vehicle inner side along the upper edge of the side surface portion 33a forms an inclined surface that is gently inclined rearward and upward.

結合部リィンフォースメント３Ｃは上縁の結合フランジ３０ａを仕切壁４の上縁に沿うようにその車外面に溶接するとともに、下縁の結合フランジ３１を仕切壁４の下縁に沿って溶接して、仕切壁４とで閉断面を形成してある。また結合部リィンフォースメント３Ｃの前端縁３４はロッカーリィンフォースメント２の後端縁２３と連結してある。結合部リィンフォースメント３Ｃの後端縁３９はホイールハウス外板７０の前面部に溶接して閉じてある。   The joint reinforcement 3C welds the upper flange flange 30a to the outer surface of the vehicle along the upper edge of the partition wall 4, and welds the lower flange flange 31 along the lower edge of the partition wall 4. Thus, a closed section is formed with the partition wall 4. The front end edge 34 of the coupling portion reinforcement 3 </ b> C is connected to the rear end edge 23 of the rocker reinforcement 2. The rear end edge 39 of the joint reinforcement 3C is closed by welding to the front portion of the wheel house skin 70.

結合部リィンフォースメント３Ｃと仕切壁４との閉断面内には、これを上下に仕切るように中間壁３ｈが設けてある。中間壁３ｈは前後方向にほぼ水平に延びる板体である。中間壁３ｈはロッカーリィンフォースメント２の上面部を後方へ延長するように結合部リィンフォースメント２の上下中間に位置し、中間壁３ｈの車外側の端縁３８ａ(一方の端縁)の結合フランジを結合部リィンフォースメント２の車内面に溶接するとともに、他方の車内側の端縁３８ｂの結合フランジを仕切壁４の上下中間に溶接して、結合部リィンフォースメント３Ｃと仕切壁４との閉断面を下部閉断面Ｄと上部閉断面Ｅとに分割している。中間壁３ｈの前端縁は、結合部リィンフォースメント３Ｃの前端縁３４と一体にロッカーリィンフォースメント２の後端２３に結合してある。   An intermediate wall 3h is provided in the closed cross section of the coupling portion reinforcement 3C and the partition wall 4 so as to partition it vertically. The intermediate wall 3h is a plate body extending substantially horizontally in the front-rear direction. The intermediate wall 3h is positioned in the middle of the joint reinforcement 2 so that the upper surface of the rocker reinforcement 2 extends rearward, and is connected to the outer edge 38a (one edge) of the intermediate wall 3h. The flange is welded to the vehicle inner surface of the coupling portion reinforcement 2 and the coupling flange of the other vehicle inner edge 38b is welded to the middle of the partition wall 4 so that the coupling portion reinforcement 3C and the partition wall 4 The closed cross section is divided into a lower closed cross section D and an upper closed cross section E. The front end edge of the intermediate wall 3h is coupled to the rear end 23 of the rocker reinforcement 2 integrally with the front end edge 34 of the coupling portion reinforcement 3C.

本実施形態によれ上述の第１の実施形態と同様の作用効果を発揮し、車両の前面衝突および側面衝突の荷重に対するロッカー１後端とリヤピラー６下端との結合部の剛性を強化することができる。   According to this embodiment, the same effect as that of the first embodiment described above is exhibited, and the rigidity of the joint portion between the rear end of the rocker 1 and the lower end of the rear pillar 6 against the load of the frontal collision and the side collision of the vehicle can be enhanced. it can.

図９は本発明の第４の実施形態を示すもので、本実施形態の構造は上述の第３の実施形態の構造に上述の第２の実施形態に用いたバルクヘッド５を追加した構造としてある。本実施形態の基本構造は第２および第３の実施形態のそれとほぼ同じである。
バルクヘッド５は、ロッカー１の仕切壁４とロッカー内板の後端部１１ａとからなる閉断面の上半部において、上縁の結合フランジ５４を車外側の結合部リィンフォースメント３Ｃの上縁の結合フランジ３０ａと対向する位置で仕切壁４の車内面上部にロッカー内板の後端部１１ａの上縁フランジと一体に結合するとともに、下縁の結合フランジ５５を中間壁３ｈの車内側の端縁３８ｂと対向する位置で仕切壁４の車内側中間部に結合してある。 FIG. 9 shows a fourth embodiment of the present invention. The structure of this embodiment is obtained by adding the bulkhead 5 used in the second embodiment to the structure of the third embodiment. is there. The basic structure of this embodiment is almost the same as that of the second and third embodiments.
In the upper half of the closed cross section formed by the partition wall 4 of the rocker 1 and the rear end portion 11a of the rocker inner plate, the bulkhead 5 is connected to the upper flange flange 54 at the upper edge of the joint reinforcement 3C on the vehicle outer side. At the position facing the coupling flange 30a, the upper wall inner surface of the partition wall 4 is coupled integrally with the upper edge flange of the rear end portion 11a of the rocker inner plate, and the lower edge coupling flange 55 is connected to the inner side of the intermediate wall 3h. It is coupled to the vehicle interior intermediate portion of the partition wall 4 at a position facing the end edge 38b.

本実施形態によれば上述の第２の実施形態と同様の作用効果を発揮し、車両の側面衝突時に車内側へ押し込まれるリヤドアＲＤのインパクトビーム９０の後端を、ロッカー１の結合部で断面崩れ起すことなく確実に受け止め、リヤドアＲＤの車内側への移動変形を抑制する。   According to the present embodiment, the rear end of the impact beam 90 of the rear door RD that is pushed into the vehicle at the time of a side collision of the vehicle is shown in cross section at the coupling portion of the rocker 1. Receiving reliably without causing collapse, the rear door RD is prevented from being deformed to the inside of the vehicle.

第１ないし第４のいずれの実施形態においても、ロッカー１とリヤピラー６との結合部では外板をリヤピラー外板６０の下端部６１で構成したので結合部の外観見栄えをスッキリさせることができ、かつロッカー外板１０の後端との結合を容易にできる。また、各実施形態では、リヤピラー外板６０の下端部６１で結合部の下縁まで被覆する構造としたが、近年、車両によってはロッカー１の車外側の下半部に沿って合成樹脂製のサイドスカート部材を設置することが行なわれ、この種のサイドスカート部材を設置する車両では下縁まで被覆する必要はなく、リヤピラー外板６０の下端部６１でロッカー１外面の上半部を被覆し、下半部をサイドスカート部材で被覆するようにしてもよい。   In any of the first to fourth embodiments, since the outer plate is constituted by the lower end portion 61 of the rear pillar outer plate 60 in the coupling portion between the rocker 1 and the rear pillar 6, the appearance of the coupling portion can be refreshed. And the coupling | bonding with the rear end of the rocker outer plate | board 10 can be made easy. In each embodiment, the lower pillar 61 of the rear pillar outer plate 60 covers the lower edge of the coupling portion. However, in recent years, some vehicles are made of synthetic resin along the lower half of the outer side of the rocker 1. A side skirt member is installed, and in a vehicle in which this type of side skirt member is installed, it is not necessary to cover the lower edge, and the lower half 61 of the rear pillar outer plate 60 covers the upper half of the outer surface of the rocker 1. The lower half may be covered with a side skirt member.

本発明の第１の実施形態の結合部構造を示すもので、図１（Ａ）はロッカーおよびリヤピラーの外板をともに省略した状態の結合部の側面図であり、図１（Ｂ）は図１（Ａ）のIB−IB線に沿う断面図である。FIG. 1A is a side view of a coupling portion in which a rocker and a rear pillar outer plate are both omitted, and FIG. 1B is a diagram illustrating the coupling portion structure according to the first embodiment of the present invention. It is sectional drawing which follows the IB-IB line of 1 (A). 上記第１の実施形態を示すもので、ロッカーの外板を省略した状態の結合部の構成部材を表す分解斜視図である。FIG. 3 is an exploded perspective view showing the first embodiment and showing the constituent members of the coupling portion in a state where the outer plate of the rocker is omitted. 本発明を適用する車両の概略側面図である。1 is a schematic side view of a vehicle to which the present invention is applied. 図3のIV‐IV線に沿うロッカーの一般部の断面図である。FIG. 4 is a cross-sectional view of a general portion of the rocker along line IV-IV in FIG. 図３のＶ−Ｖ線に沿うリヤピラーの下端部の断面図である。It is sectional drawing of the lower end part of the rear pillar which follows the VV line of FIG. 本発明の第２の実施形態を示すもので、図１（Ｂ）に対応する縦断面図である。The 2nd Embodiment of this invention is shown and it is a longitudinal cross-sectional view corresponding to FIG. 1 (B). 本発明の第３の実施形態を示すもので、図２に対応してロッカーの外板を省略した状態の結合部の分解斜視図である。The third embodiment of the present invention is shown, and is an exploded perspective view of the coupling portion in a state where the outer plate of the rocker is omitted corresponding to FIG. 図７のVIII‐VIII線に沿う位置での縦断面図である。It is a longitudinal cross-sectional view in the position which follows the VIII-VIII line of FIG. 本発明の第４の実施形態を示すもので、図８に対応する縦断面図である。FIG. 9 shows a fourth embodiment of the present invention and is a longitudinal sectional view corresponding to FIG. 8. 図２に対応して従来の結合部構造を示す分解斜視図である。FIG. 3 is an exploded perspective view showing a conventional coupling portion structure corresponding to FIG. 2. 図１０のXI−XI線に沿う結合部の断面図である。It is sectional drawing of the coupling | bond part along the XI-XI line of FIG. リヤドア閉鎖時の結合部の周辺を示す概略側面図である。It is a schematic side view which shows the periphery of the coupling | bond part at the time of a rear door closing.

符号の説明Explanation of symbols

１ ロッカー
１０ ロッカー外板
１１ ロッカー内板
２ ロッカーリィンフォースメント
２３ 後端縁
３，３Ｃ 結合部リィンフォースメント
３ａ 第１のリィンフォースメント
３ｂ 第２のリィンフォースメント
３０，３０ａ，３１ 結合フランジ（上下の開口縁）
３７ 結合フランジ（一方の端縁）
３８ 結合部（他方の端縁）
３ｈ 中間壁
３８ａ 中間壁の車外側の端縁（一方の端縁）
３８ｂ 中間壁の車内側の端縁（他方の端縁）
５ バルクヘッド
５４ 上部開口縁
５５ 下部開口縁
６ リヤピラー
７ リヤホイールハウス
８０ リヤサイドメンバ
９ａ，９ｂ ドア開口
９０ ドアインパクトビーム
Ｄ 下部部閉断面
Ｅ 上部閉断面
Ｆ バルクヘッドの閉断面 DESCRIPTION OF SYMBOLS 1 Rocker 10 Rocker outer plate 11 Rocker inner plate 2 Rocker reinforcement 23 Rear end edge 3, 3C Joint portion reinforcement 3a First reinforcement 3b Second reinforcement 30, 30a, 31 Joint flange (upper and lower) Opening edge)
37 Connecting flange (one edge)
38 joint (the other edge)
3h Intermediate wall 38a The outer edge of the intermediate wall (one edge)
38b The inner edge of the intermediate wall (the other edge)
5 Bulkhead 54 Upper Opening Edge 55 Lower Opening Edge 6 Rear Pillar 7 Rear Wheel House 80 Rear Side Member 9a, 9b Door Opening 90 Door Impact Beam D Lower Closed Section E Upper Closed Section F Bulkhead Closed Section

Claims (9)

車体の側面のドア開口の下縁に沿って前後方向に延びる閉断面構造のロッカーの後端部が、リヤホイールハウスの前端と一体のリヤピラーの下端部と結合する結合部であって、高さがロッカー側からリヤピラー側に向けて徐々に高くなる閉断面構造のロッカー後端部とリヤピラー下端部の結合部構造において、
上記結合部の内部に、上記ロッカーの一般部を後方へ延長するように延びる下部閉断面をなす第１のリィンフォースメントと、第１のリィンフォースメント上に設けてリヤピラーに向けて徐々に高さが高くなる上部閉断面をなす第２のリィンフォースメントからなる結合部リィンフォースメントを設け、
上記結合部リィンフォースメントを上下2層の閉断面構造としたことを特徴とする自動車のロッカー後端部とリヤピラー下端部の結合部構造。 The rear end portion of the rocker having a closed cross-section structure extending in the front-rear direction along the lower edge of the door opening on the side of the vehicle body is a coupling portion that is coupled to the lower end portion of the rear pillar integrated with the front end of the rear wheel house, In the joint structure of the rocker rear end portion and the rear pillar lower end portion of the closed cross section structure in which the height gradually increases from the rocker side toward the rear pillar side,
A first reinforcement having a lower closed cross section extending so as to extend rearwardly the general portion of the rocker inside the coupling portion, and a first reinforcement that is provided on the first reinforcement and gradually increases toward the rear pillar. A coupling reinforcement comprising a second reinforcement having an upper closed cross-section with an increased height;
A connecting portion structure of a rear end portion of a rocker and a lower end portion of a rear pillar of an automobile, wherein the connecting portion reinforcement has a two-layer closed cross-sectional structure. 請求項1に記載の自動車のロッカー後端部とリヤピラー下端部の結合部構造において、
上記ロッカーの一般部は、ロッカー外板とロッカー内板とで閉断面を形成するとともに、閉断面内には上記ロッカー外板に沿って設けられ閉断面内を車内外方向に仕切るロッカーリィンフォースメントを備え、
上記結合部には、その内部を車外側と車内側とに仕切る縦壁状の仕切壁を設け、
上記仕切壁の車外面の下部に上記第１のリィンフォースメントを結合して上記仕切壁とで上記下部閉断面を形成し、上記仕切壁の車外面の上部に上記第２のリィンフォースメントを結合して上記仕切壁とで上記上部閉断面を形成した自動車のロッカー後端部とリヤピラー下端部の結合部構造。 In the connecting portion structure of the rear end of the rocker and the lower end of the rear pillar according to claim 1,
The general part of the rocker forms a closed cross section with a rocker outer plate and a rocker inner plate, and a rocker reinforcement that is provided along the rocker outer plate in the closed cross section and partitions the inside of the closed cross section toward the inside and outside of the vehicle. With
The coupling portion is provided with a vertical wall-shaped partition wall that divides the interior into the vehicle outer side and the vehicle inner side,
The first reinforcement is coupled to the lower part of the outer surface of the partition wall to form the lower closed section with the partition wall, and the second reinforcement is formed on the upper part of the outer surface of the partition wall. A joint structure of a rear end portion of a rocker and a lower end portion of a rear pillar, which are combined to form the upper closed section with the partition wall. 請求項２に記載の自動車のロッカー後端部とリヤピラー下端部の結合部構造において、
上記第１のリィンフォースメントは車内側へ開口する断面ほぼハット形で上下の開口縁を上記仕切壁の車外面に接合し、仕切壁とで上記下部閉断面を形成し、
上記第２のリィンフォースメントは断面ほぼ逆Ｌ字形で、一方の端縁を上記仕切壁の車外面の上部に接合するとともに他方の端縁を上記第１のリィンフォースメントの車外側の上縁に接合して、上記仕切壁および第１のリィンフォースメントの上部とで上記上部閉断面を形成し、
上記仕切壁と、第１および第２のリィンフォースメントとで上下２層の閉断面構造を形成した自動車のロッカー後端部とリヤピラー下端部の結合部構造。 In the connection part structure of the rocker rear end part and rear pillar lower end part of the automobile according to claim 2,
The first reinforcement has a substantially hat-shaped cross section that opens to the inside of the vehicle, and upper and lower opening edges are joined to the vehicle outer surface of the partition wall to form the lower closed section with the partition wall,
The second reinforcement is substantially L-shaped in cross section, and one end edge is joined to the upper part of the outer surface of the partition wall and the other end is the upper edge of the first reinforcement on the vehicle exterior. To form the upper closed section with the partition wall and the upper part of the first reinforcement,
A joint structure of a rear end portion of a rocker and a lower end portion of a rear pillar of an automobile, wherein the partition wall and the first and second reinforcements form a two-layer closed cross-sectional structure. 請求項３に記載の自動車のロッカー後端部とリヤピラー下端部の結合部構造において、
上記第１のリィンフォースメントおよび上記第２のリィンフォースメントの前端縁を上記ロッカーリィンフォースメントの後端縁と接合せしめた自動車のロッカー後端部とリヤピラー下端部の結合部構造。 The joint structure of the rear end portion of the rocker and the lower end portion of the rear pillar according to claim 3,
A joint structure of a rear end portion of a rocker and a lower end portion of a rear pillar, in which front end edges of the first reinforcement and the second reinforcement are joined to a rear end edge of the rocker reinforcement. 車体の側面のドア開口の下縁に沿って前後方向に延びる閉断面構造のロッカーの後端部が、リヤホイールハウスの前端と一体のリヤピラーの下端部と結合する結合部であって、高さがロッカー側からリヤピラー側に向けて徐々に高くなる閉断面構造のロッカー後端部とリヤピラー下端部の結合部構造において、
上記結合部の内部に、閉断面を形成し、高さがロッカー側からリヤピラー側に向けて徐々に高くなる結合部リィンフォースメントを設け、
該結合部リィンフォースメントの上下中間位置に前後方向水平に延びる中間壁を設け、
上記結合部リィンフォースメントの下部に上記ロッカーの一般部を後方へ延長するように延びる下部閉断面と、上部に上記リヤピラーに向けて徐々に高さが高くなる上部閉断面を形成して結合部リィンフォースメントを上下２層の閉断面構造とした自動車のロッカー後端部とリヤピラー下端部の結合部構造。 The rear end portion of the rocker having a closed cross-section structure extending in the front-rear direction along the lower edge of the door opening on the side of the vehicle body is a coupling portion that is coupled to the lower end portion of the rear pillar integrated with the front end of the rear wheel house, In the joint structure of the rocker rear end portion and the rear pillar lower end portion of the closed cross section structure in which the height gradually increases from the rocker side toward the rear pillar side,
Inside the coupling portion, a closed cross section is formed, and a coupling portion reinforcement in which the height gradually increases from the rocker side toward the rear pillar side is provided,
An intermediate wall extending horizontally in the front-rear direction is provided at an upper and lower intermediate position of the coupling portion reinforcement,
A lower closed cross section extending so as to extend the general portion of the rocker backward in the lower part of the joint reinforcement, and an upper closed cross section that gradually increases in height toward the rear pillar is formed in the upper part. A joint structure of a rear end portion of a rocker and a lower end portion of a rear pillar, in which reinforcement is a closed cross-sectional structure of two layers, upper and lower. 請求項５に記載の自動車のロッカー後端部とリヤピラー下端部の結合部構造において、
上記ロッカーの一般部は、ロッカー外板とロッカー内板とで閉断面を形成するとともに、閉断面内には上記ロッカー外板に沿って設けられ閉断面内を車内外方向に仕切るロッカーリィンフォースメントを備え、
上記結合部には、その内部を車外側と車内側とに仕切る縦壁状の仕切壁を設け、
上記仕切壁の車外面に、車内側へ開口する断面ほぼハット形をなす上記結合部リィンフォースメントの上下の開口縁を接合して、結合部リィンフォースメントと上記仕切壁とで閉断面構造をなし、
板体からなる上記中間壁は、一方の端縁を上記結合部リィンフォースメントの車内面に接合するとともに他方の端縁を上記仕切壁の車外面に接合して、上記下部閉断面および上記上部閉断面を形成するように設置し、上記仕切壁と上記結合部リィンフォースメントおよび上記中間壁とで上下２層の閉断面構造を形成した自動車のロッカー後端部とリヤピラー下端部の結合部構造。 In the connection part structure of the rocker rear end part and rear pillar lower end part of the automobile according to claim 5,
The general part of the rocker forms a closed cross section with a rocker outer plate and a rocker inner plate, and a rocker reinforcement that is provided along the rocker outer plate in the closed cross section and partitions the inside of the closed cross section toward the inside and outside of the vehicle. With
The coupling portion is provided with a vertical wall-shaped partition wall that divides the interior into the vehicle outer side and the vehicle inner side,
The upper and lower opening edges of the joint reinforcement that has a substantially hat-shaped cross section that opens to the inside of the vehicle are joined to the outer surface of the partition wall to form a closed cross-section structure with the joint reinforcement and the partition wall. None,
The intermediate wall made of a plate body has one end edge joined to the vehicle inner surface of the coupling portion reinforcement and the other edge joined to the vehicle outer surface of the partition wall so that the lower closed cross section and the upper portion are joined. A joint structure of a rear end of a rocker and a lower end of a rear pillar of an automobile, which is installed so as to form a closed cross section and forms a closed cross section structure of two upper and lower layers by the partition wall, the joint reinforcement and the intermediate wall. . 請求項６に記載の自動車のロッカー後端部とリヤピラー下端部の結合部構造において、
上記結合部リィンフォースメントおよび上記中間壁の前端縁を上記ロッカーリィンフォースメントの後端縁と接合せしめた自動車のロッカー後端部とリヤピラー下端部の結合部構造。 The joint structure of the rear end portion of the rocker and the lower end portion of the rear pillar according to claim 6,
A connecting portion structure of a rocker rear end portion and a rear pillar lower end portion of an automobile in which the front end edge of the connecting portion reinforcement and the intermediate wall is joined to the rear end edge of the rocker reinforcement. 請求項２ないし４、請求項６、７に記載の自動車のロッカー後端部とリヤピラー下端部の結合部構造において、
上記結合部の車外側には上記上部閉断面に対応する位置に、上記ドア開口を開閉するドアの内部に前後方向に設置されたドアインパクトビームの後端が配置され、
また上記結合部の車内側には上記ロッカー内板の車内側の側面に沿って、車両前後方向に延びるリヤサイドメンバの前端部が接合され、
上記ロッカー内板と上記仕切壁と間には上記上部閉断面の車内側の位置に、上記仕切壁の車内面とで閉断面をなすバルクヘッドを設けた自動車のロッカー後端部とリヤピラー下端部の結合部構造。 In the connecting portion structure of the rear end portion of the rocker and the lower end portion of the rear pillar according to any one of claims 2 to 4 and claims 6 and 7,
The rear end of the door impact beam installed in the front-rear direction inside the door that opens and closes the door opening is arranged at a position corresponding to the upper closed cross section on the vehicle outer side of the coupling portion,
Further, the front end portion of the rear side member extending in the vehicle front-rear direction is joined to the inner side of the coupling portion along the side surface of the inner plate of the rocker inner plate,
A rear end of a rocker and a lower end of a rear pillar provided between the inner wall of the locker and the partition wall are provided with a bulkhead having a closed cross section with the inner surface of the partition wall at a position inside the upper closed cross section of the vehicle. The joint structure. 請求項８に記載の自動車のロッカー後端部とリヤピラー下端部の結合部構造において、
上記バルクヘッドは車外側に向けて開口する断面ハット形をなし、上部開口縁を上記第２のリィンフォースメントまたは上記結合部リィンフォースメントの上縁に対する位置で上記仕切壁の車内面に接合するとともに、
下部開口縁を上記第１のリィンフォースメントの上縁または上記中間壁に対応する位置で上記仕切壁の車内面に接合せしめた自動車のロッカー後端部とリヤピラー下端部の結合部構造。 The joint structure of the rear end portion of the rocker and the lower end portion of the rear pillar according to claim 8,
The bulkhead has a cross-sectional hat shape that opens toward the outside of the vehicle, and the upper opening edge is joined to the inner surface of the partition wall at a position relative to the upper edge of the second reinforcement or the coupling reinforcement. With
A connecting portion structure of a rear end portion of a rocker and a lower end portion of a rear pillar in which a lower opening edge is joined to an inner surface of the partition wall at a position corresponding to the upper edge of the first reinforcement or the intermediate wall.
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