JPH049276Y2

JPH049276Y2 -

Info

Publication number: JPH049276Y2
Application number: JP18253886U
Authority: JP
Priority date: 1986-11-27
Filing date: 1986-11-27
Publication date: 1992-03-09
Also published as: JPS6387190U

Description

【考案の詳細な説明】〔産業上の利用分野〕本考案は自動車のリヤフロアサイドメンバの前
端部の結合構造に関するものである。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a connecting structure for the front end of a rear floor side member of an automobile.

[Prior art]

自動車の後部車体の両サイドに設けたリヤフロ
アサイドメンバの前端部の結合構造として、該前
端部をロツカパネルおよびフロアクロスメンバに
結合せしめたものがある（実開昭55−124369号）。 There is a structure for connecting the front ends of rear floor side members provided on both sides of the rear body of an automobile, in which the front ends are connected to a rocker panel and a floor cross member (Utility Model Application No. 124369/1987).

第４図および第５図はこの種の結合構造として
従来用いられている結合構造を示すもので、断面
ハツト型のリヤフロアサイドメンバ（以下、単に
サイドメンバという）１は、その車外側の側壁１
１の前端がロツカパネル２の車内側の側面に溶接
されており、また車内側の側壁１２および底壁１
３は更に前方へ延在して前端がフロアクロスメン
バ（以下、単にクロスメンバという）３およびロ
ツカパネル２に溶接されている。そしてこの結合
部には上からセンタフロア６が溶接される。 4 and 5 show a conventionally used coupling structure of this type. A rear floor side member (hereinafter simply referred to as a side member) 1 having a hat-shaped cross section has a side wall 1 on the outside of the vehicle.
1 is welded to the side surface of the rocker panel 2 on the inside of the car, and the front end of the rocker panel 2 is welded to the side wall 12 and the bottom wall 1 on the inside of the car.
3 extends further forward, and its front end is welded to a floor cross member (hereinafter simply referred to as a cross member) 3 and rocker panel 2. The center floor 6 is welded to this joint from above.

ところでこの結合部には、リヤサスペンシヨン
を介して振動が入力する。また後部車体の側面ま
たは後端からの外力を受けると捩れ力が作用す
る。従つて高い結合剛性および捩れ剛性が要求さ
れる。このためロツカパネル２とサイドメンバ１
の車外側の側壁１２間にサイドメンバ内リインホ
ースメント４を設けているが、結合部の閉断面構
成部材として、サイドメンバ１よりも薄いセンタ
フロア６およびロツカパネル２が含まれており、
更に剛性の強化が望まれている。 However, vibrations are input to this joint via the rear suspension. Further, when an external force is applied from the side or rear end of the rear vehicle body, a twisting force is applied. Therefore, high joint stiffness and torsional stiffness are required. For this reason, rock panel 2 and side member 1
A reinforcement 4 in the side member is provided between the side walls 12 on the outside of the vehicle, and a center floor 6 and a rocker panel 2, which are thinner than the side member 1, are included as closed cross-section constituent members of the joint.
Furthermore, reinforcement of rigidity is desired.

[Problems that this invention attempts to solve]

本考案は上記の実情に鑑み、サイドメンバ１の
結合部の剛性を、構造を複雑化することなく、強
化することを目的とするものである。 In view of the above-mentioned circumstances, the present invention aims to strengthen the rigidity of the connecting portion of the side member 1 without complicating the structure.

[Means for solving problems]

本考案は第１図ないし第３図に示すように、サ
イドメンバ１、ロツカパネル２、クロスメンバ３
およびサイドメンバ内リインホースメント４で構
成される結合部の上部開口を閉じる、センタフロ
ア６よりも厚い上部リインホースメント５を設け
て、これを上記各構成部材と結合せしめたことを
特徴とする。 As shown in FIGS. 1 to 3, the present invention includes a side member 1, a rocker panel 2, and a cross member 3.
and an upper reinforcement 5 which is thicker than the center floor 6 and which closes the upper opening of the joint formed by the reinforcement 4 in the side member, and is combined with each of the above-mentioned constituent members. .

[Effect]

本考案によれば、それ自体剛性の高いサイドメ
ンバ１およびクロスメンバ３と結合されるととも
にサイドメンバ内リインホースメント４に結合さ
れた上部リインホースメント５をロツカパネル２
に結合せしめて六面体の結合部を構成しているの
で、結合部の捩り剛性および結合剛性は従来構造
よりも大幅に向上される。 According to the present invention, the upper reinforcement 5, which is connected to the side member 1 and the cross member 3, which are themselves highly rigid, and is connected to the reinforcement 4 in the side member, is connected to the rocker panel 2.
Since the hexahedral joint is formed by connecting the hexahedral joint to the hexahedral joint, the torsional rigidity and joint rigidity of the joint are greatly improved compared to conventional structures.

〔Example〕

第１図ないし第３図に本考案の実施例を示す。 Embodiments of the present invention are shown in FIGS. 1 to 3.

サイドメンバ１は断面ハツト型で、車外側の側
壁１１の前端はフランジ１１１にてロツカ２のロ
ツカインナパネル２１に溶接してある。サイドメ
ンバ１の車内側の側壁１２および底壁１３は更に
前方へ延在している。 The side member 1 has a hat-shaped cross section, and the front end of the side wall 11 on the outside of the vehicle is welded to the rocker inner panel 21 of the rocker 2 at a flange 111. A side wall 12 and a bottom wall 13 on the vehicle inner side of the side member 1 extend further forward.

リヤシート（図示せず）の下方位置には両端を
ロツカインナパネル２１に溶接したクロスメンバ
３が設けてある。サイドメンバ１の車内側の側壁
１２の前端はフランジ１２１により上記クロスメ
ンバ３に溶接してある。また底壁１３の前端部は
フランジ１３１およびフランジ１３２によりそれ
ぞれクロスメンバ３およびロツカインナパネル２
１の側面に溶接してある。ロツカインナパネル２
１と、これに対向する車内側の側壁１２間には、
車外側の側壁１１の前端でハツト型断面を閉じる
ようにサイドメンバ内リインホースメント４が設
けてある。該リインホースメント４には上下にフ
ランジ４１，４２が設けてあり、下部フランジ４
２がサイドメンバ１の底壁１３に溶接せしめてあ
り、車外側の側端はロツカインナパネル２１およ
び車外側の側壁１１の前端に当接し、内側の側端
は車内側の側壁１１に当接している。クロスメン
バ３の下部フランジ３２にはフロントフロア７の
後端が溶接してある。 A cross member 3 whose both ends are welded to a rocker inner panel 21 is provided below a rear seat (not shown). The front end of the side wall 12 on the inside of the side member 1 is welded to the cross member 3 through a flange 121. Further, the front end of the bottom wall 13 is connected to the cross member 3 and rock inner panel 2 by flanges 131 and 132, respectively.
It is welded to the side of 1. Lotsuka inner panel 2
1 and the opposite side wall 12 on the inside of the vehicle,
A reinforcement 4 in the side member is provided so as to close the hat-shaped cross section at the front end of the side wall 11 on the outside of the vehicle. The reinforcement 4 is provided with upper and lower flanges 41 and 42, and the lower flange 4
2 is welded to the bottom wall 13 of the side member 1, and its outer side end abuts against the lock inner panel 21 and the front end of the outer side wall 11, and its inner side end abuts against the inner side wall 11. ing. The rear end of the front floor 7 is welded to the lower flange 32 of the cross member 3.

５は本考案において新しく設けたた上部リイン
ホースメントで、ロツカ２とほぼ同じ板厚であつ
て、結合部の上部開口をおおうように設けてあ
る。そしてその外周部はクロスメンバ３の上部フ
ランジ３１、サイドメンバ１の車内側の側壁１２
の上部フランジ１２２、サイドメンバ内リインホ
ースメント４の上部フランジ４１に溶接してあ
る。そしてロツカ２への延在部がロツカインナパ
ネル２１の上面に溶接してある。そして車体の両
サイドのサイドメンバ１間はセンタフロア６で覆
われ、上部リインホースメント５に溶接されると
ともに、前端縁がクロスメンバ３の段部に溶接さ
れる。 Reference numeral 5 denotes an upper reinforcement newly provided in the present invention, which has approximately the same thickness as the rocker 2, and is provided so as to cover the upper opening of the joint. The outer periphery is the upper flange 31 of the cross member 3 and the side wall 12 of the side member 1 on the inside of the vehicle.
The upper flange 122 of the side member is welded to the upper flange 41 of the reinforcement 4 in the side member. The extending portion to the rocker 2 is welded to the upper surface of the rocker inner panel 21. The space between the side members 1 on both sides of the vehicle body is covered with a center floor 6, which is welded to the upper reinforcement 5 and whose front edge is welded to the stepped portion of the cross member 3.

しかして本考案の結合構造では、サイドメンバ
１の車外側の側壁１１、ロツカインナパネル２、
クロスメンバ３、サイドメンバ内リインホースメ
ント４、底壁１３および上部リインホースメント
５とで六面体を構成し、かつ六面のうちロツカイ
ンナパネル２１は、その前部がクロスメンバ３
に、下部および後部がサイドメンバ１にそれぞれ
結合されるとともに、上部はクロスメンバ３およ
びサイドメンバ１と一体化された上部リインホー
スメント５に結合されているからその剛性が強化
され、全体として極めて高い捩れ剛性および結合
剛性が発揮されるのである。しかも結合構造は上
部リインホースメント５を追加するのみであり、
特に構造の複雑化を伴なうものではない。 However, in the joint structure of the present invention, the side wall 11 on the outside of the vehicle of the side member 1, the inner panel 2,
The cross member 3, the reinforcement 4 in the side member, the bottom wall 13, and the upper reinforcement 5 constitute a hexahedron, and among the six sides, the front part of the lock inner panel 21 is connected to the cross member 3.
In addition, the lower part and the rear part are respectively connected to the side member 1, and the upper part is connected to the upper reinforcement 5 which is integrated with the cross member 3 and the side member 1, so that its rigidity is strengthened and the overall structure is extremely high. This results in high torsional stiffness and bonding stiffness. Moreover, the connection structure only requires the addition of the upper reinforcement 5,
It does not particularly involve a complicated structure.

[Brief explanation of the drawing]

第１図ないし第３図は本考案の実施例を示すも
ので、第１図は結合部の斜視図、第２図は第１図
の−線断面図、第３図は第１図の−線断
面図、第４図および第５図は従来構造を示すもの
で、第４図は結合部の斜視図、第５図は第４図の
−線断面図である。１……リヤフロアサイドメンバ、１１，１２…
…側壁、１３……底壁、２……ロツカパネル、３
……フロアクロスメンバ、４……サイドメンバ内
リインホースメント、５……上部リインホースメ
ント。 1 to 3 show an embodiment of the present invention, in which FIG. 1 is a perspective view of a joint, FIG. 2 is a cross-sectional view taken along line - - in FIG. The line sectional view, FIGS. 4 and 5 show the conventional structure, where FIG. 4 is a perspective view of the joint, and FIG. 5 is a sectional view taken along the line -- in FIG. 4. 1...Rear floor side member, 11, 12...
...Side wall, 13...Bottom wall, 2...Rock panel, 3
...Floor cross member, 4...Reinforcement in side member, 5...Upper reinforcement.

Claims

[Scope of utility model registration request]

The front end of the outer side wall of the rear floor side member, which has a hat-shaped cross section, is connected to the inner side of the rocker panel, and the bottom wall and the inner side wall of the rear floor side member are extended forward to connect the front ends of these to the floor cross section. In the front end joint structure of the rear floor side member connected to the member, a reinforcement in the side member is provided between the car-inward side surface of the rocker panel and the car-inner side wall of the rear floor side member opposite thereto, and the rocker panel and the floor cross are connected to each other. A plate-shaped upper reinforcement is provided to cover each of the upper end surfaces of the member, the rear floor side member extension portion's outer side wall, and the reinforcement inside the side member, and the reinforcement is coupled to the upper end surface. Features a front end joint structure of the rear floor side members.