JP7310615B2 - vehicle body structure - Google Patents

vehicle body structure Download PDF

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JP7310615B2
JP7310615B2 JP2020005030A JP2020005030A JP7310615B2 JP 7310615 B2 JP7310615 B2 JP 7310615B2 JP 2020005030 A JP2020005030 A JP 2020005030A JP 2020005030 A JP2020005030 A JP 2020005030A JP 7310615 B2 JP7310615 B2 JP 7310615B2
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vehicle
width direction
vehicle width
joined
vehicle body
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JP2021112928A (en
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喬平 桑田
常規 嶋中
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Mazda Motor Corp
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Mazda Motor Corp
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Description

この発明は、例えば、延在方向(長手方向)に延びる閉断面部材と、該閉断面部材の上面部に接合される接合パネルと、閉断面部材の側面部に取り付けられる取付部材と、を備えた車両の車体構造に関する。 The present invention includes, for example, a closed cross-section member extending in an extending direction (longitudinal direction), a joining panel joined to the upper surface of the closed cross-section member, and a mounting member attached to the side surface of the closed cross-section member. The present invention relates to a vehicle body structure of a vehicle.

図7(a)は、車内空間の両サイド(図7(a)は車両右側のみ図示)の側面部100に接合され、該側面部100との間に車両上下方向に延びる閉断面空間101sを有するガセット101と、これら両サイドのガセット101の上部を繋ぐように内部に車幅方向に延びる閉断面空間102sを有するクロスメンバとしての閉断面部材102と、を備えた従来の車体後部の一例を示している。 7(a) is joined to the side portions 100 on both sides of the vehicle interior space (FIG. 7(a) shows only the right side of the vehicle), and a closed cross-sectional space 101s extending in the vertical direction of the vehicle is formed between the side portions 100 and the side portions 100. and a closed cross-section member 102 as a cross member having a closed cross-section space 102s extending in the vehicle width direction so as to connect the upper parts of the gussets 101 on both sides. showing.

詳しくは、図7(a)は、車両右側のガセット101の上部と閉断面部材102の車幅方向の右端との結合部分およびその周辺部分の一例を模式的に示すものである。 Specifically, FIG. 7(a) schematically shows an example of a connecting portion between the upper portion of the gusset 101 on the right side of the vehicle and the right end of the closed section member 102 in the vehicle width direction, and the surrounding portion thereof.

図7(a)に示すように、閉断面部材102の内部に有する閉断面空間102sは、上面部102a、下面部102bおよび車両前後方向の各側に有する側面部102c,102dによって画成されている。また、閉断面部材102の上面部102aには、前後夫々に対応する側壁部102c,102dよりも突出するフランジ部102f,102rが車幅方向に沿って一体形成されている。同様に、ガセット101の上面部101aには、前後夫々に対応する側壁部よりも突出するフランジ部101f,101rが車幅方向に沿って一体形成されている。 As shown in FIG. 7A, a closed cross-sectional space 102s provided inside the closed cross-sectional member 102 is defined by an upper surface portion 102a, a lower surface portion 102b, and side portions 102c and 102d provided on each side in the vehicle front-rear direction. there is Flange portions 102f and 102r are integrally formed on the upper surface portion 102a of the closed cross-section member 102 along the vehicle width direction so as to protrude from the corresponding side wall portions 102c and 102d on the front and rear sides, respectively. Similarly, the upper surface portion 101a of the gusset 101 is integrally formed with flange portions 101f and 101r along the vehicle width direction, which protrude from the corresponding side wall portions on the front and rear sides, respectively.

このようなガセット101と閉断面部材102との結合部分には、これらガセット101と閉断面部材102とを連結するパネル部材103を備えている。 A panel member 103 for connecting the gusset 101 and the closed cross-section member 102 is provided at the connecting portion between the gusset 101 and the closed cross-section member 102 .

詳しくは、パネル部材103は図7(a)に示すように、ガセット101と、閉断面部材102の車幅方向の右側とに跨るように上方から配置されている。これにより、パネル部材103は、ガセット101の上面部101aと閉断面部材102の車幅方向の右側の上面部102aとに対して、夫々の上面部101a,102aに有する前後各側のフランジ部(101f,102f),(101r,102r)を含めて上方から重ね合わせるように配置されている。 Specifically, as shown in FIG. 7A, the panel member 103 is arranged from above so as to straddle the gusset 101 and the right side of the closed section member 102 in the vehicle width direction. As a result, the panel member 103 is provided with front and rear flange portions ( 101f, 102f) and (101r, 102r) are arranged so as to overlap from above.

そして、パネル部材103は、ガセット101および閉断面部材102の各上面部101a,102aとの重合部分のうち、夫々に備えたフランジ部(101f,102f),(101r,102r)に対して溶接等により接合される(図7(a)(b)中の溶接箇所を示す「×」参照)。 Then, the panel member 103 is welded, etc., to the flange portions (101f, 102f) and (101r, 102r) of the overlapping portions of the gusset 101 and the upper surface portions 101a, 102a of the closed cross-section member 102, respectively. are joined (see "x" indicating a welded portion in FIGS. 7(a) and 7(b)).

これにより、パネル部材103は、ガセット101と閉断面部材102とを連結するためのブラケットとしてのみならず、結合部分を補強する補強部材も兼ねている。 Thereby, the panel member 103 serves not only as a bracket for connecting the gusset 101 and the closed section member 102, but also as a reinforcing member for reinforcing the connecting portion.

ところで、閉断面部材102は内部に閉断面空間102sを有する車体剛性部材であるため、閉断面部材102の周辺に配設される補機(車両部品)(図示省略)を、閉断面部材102における、例えば、側面部102c,102dや下面部102b等といった、パネル部材103を接合する上面部102a以外の構成面に、図7(b)に示すように取付け部材104を介して取り付けることで、これら補機を閉断面部材102によって支持することができる。 By the way, since the closed cross-section member 102 is a vehicle body rigid member having a closed cross-section space 102s inside, the auxiliary machine (vehicle part) (not shown) disposed around the closed cross-section member 102 is placed in the closed cross-section member 102. 7(b), they can be attached to surfaces other than the upper surface portion 102a to which the panel member 103 is joined, such as the side surface portions 102c and 102d and the lower surface portion 102b, via the mounting member 104 as shown in FIG. 7(b). Accessories may be supported by the closed section member 102 .

図7(b)は図7(a)中のA-A線矢視断面図であって、閉断面部材102の後面に位置する側面部102dに対して、補機取付けブラケットとしての取付け部材104を取付けた構造を示す断面図である。 FIG. 7(b) is a cross-sectional view taken along the line AA in FIG. 7(a), in which the attachment member 104 as an accessory attachment bracket is attached to the side surface portion 102d located on the rear surface of the closed cross-section member 102. is a cross-sectional view showing the structure with the attached.

図7(b)中の符号105は、閉断面部材102の側面部102dの取付け箇所に取付け部材104を取付けために、該取付け箇所に対して閉断面空間102sの側から作業者が工具等をアクセスするための作業穴であって、閉断面部材102の上面部102aに貫通形成されている。 Reference numeral 105 in FIG. 7(b) indicates that an operator inserts a tool or the like from the side of the closed cross-section space 102s to the attachment location of the side surface portion 102d of the closed cross-section member 102 in order to attach the attachment member 104 to the attachment location. A work hole for access is formed through the upper surface portion 102a of the closed cross-section member 102 .

また、上述したパネル部材103は、車幅方向においてガセット101の側から作業穴105よりも車幅方向内側に至るまで形成されている。このため、パネル部材103においても作業穴105が貫通形成されている(図7(b)参照)。このように、パネル部材103を作業穴105の周縁に至るまで形成することで、上面部102aの作業穴105の周縁の補強も兼ねている。 Further, the panel member 103 described above is formed from the gusset 101 side to the inner side of the work hole 105 in the vehicle width direction. For this reason, a working hole 105 is also formed through the panel member 103 (see FIG. 7(b)). By forming the panel member 103 up to the peripheral edge of the working hole 105 in this manner, the peripheral edge of the working hole 105 of the upper surface portion 102a is also reinforced.

しかし、パネル部材103をこのように車幅方向に広範囲に形成した場合、図7(a)(b)に示すように、上面部102aとパネル部材103との重ね合わせ部分106であって、フランジ部102f,102rに相当する部位以外の部分(非接合領域106A)は、閉断面空間102sに面するため、溶接等によって互いに接合することができず、単に重なり合った状態となる。 However, when the panel member 103 is formed in a wide range in the vehicle width direction in this way, as shown in FIGS. The portions other than the portions corresponding to the portions 102f and 102r (the non-bonded regions 106A) face the closed cross-sectional space 102s, and therefore cannot be bonded to each other by welding or the like, and simply overlap each other.

そうすると、車両走行時に非接合領域106Aにおける上面部102aとパネル部材103とが互いに擦れることにより異音が発生することが懸念される。 As a result, there is a concern that the upper surface portion 102a and the panel member 103 in the non-joint region 106A will rub against each other during vehicle travel, causing abnormal noise.

本発明はこのような課題に鑑みてなされたもので、閉断面部材の剛性を確保しつつ被取付面(上記側面部102dに相当)に取付部材を取付けることができるとともに、被接合面(上記上面部102aに相当)とパネル部材との重ね合わせ部分のうち、非接合領域が車両走行時に擦れることにより発生する異音を防止することができる車両の車体構造の提供を目的とする。 The present invention has been devised in view of such problems. An object of the present invention is to provide a vehicle body structure capable of preventing abnormal noise generated by rubbing of a non-bonded area of an overlapped portion between a panel member and an upper surface portion 102a when the vehicle is running.

この発明は、延在方向の直交断面において複数の構成面によって画成される閉断面空間を内部に有する閉断面部材と、複数の上記構成面のうち、接合フランジ部を備えた面である被接合面に、接合されるパネル部材と、複数の上記構成面のうち、上記被接合面とは異なる面である被取付面に取り付けられる取付部材と、を備えた車両の車体構造において、上記パネル部材は、上記被接合面の延在方向の一端側から他端に向けて連続して延びる領域であるとともに上記接合フランジを含めた領域に、上記閉断面空間の外側から重合されるとともに、該接合フランジにおいて接合され、上記パネル部材と上記被接合面との重ね合わせ部分に、上記被取付面と上記取付部材とを取付けるための作業穴を貫通形成し、上記重ね合わせ部分のうち、上記被接合面のみに、該被接合面の上記一端側と上記作業穴の間に亘って開口する開口部が設けられたものである。 The present invention provides a closed cross-section member having a closed cross-section space defined by a plurality of configuration surfaces in an orthogonal cross section in the extension direction, and a covering member having a joint flange portion among the plurality of configuration surfaces. A vehicle body structure comprising: a panel member to be bonded to a bonding surface; and a mounting member to be attached to a mounting surface that is different from the bonding surface among the plurality of constituent surfaces, wherein the panel The member is superimposed from the outside of the closed cross-sectional space on a region that extends continuously from one end side toward the other end in the extending direction of the surfaces to be joined and includes the joining flange portion , A working hole for attaching the mounting surface and the mounting member is formed through a portion where the panel member and the surface to be bonded are overlapped at the bonding flange portion, and in the overlapping portion, Only the surface to be joined is provided with an opening extending between the one end side of the surface to be joined and the working hole.

上記構成によれば、閉断面部材の剛性を確保しつつ被取付面に取付部材を取付けることができるとともに、互いに重ね合わせた被接合面とパネル部材とが車両走行時に擦れることにより発生する異音を防止することができる。 According to the above configuration, the mounting member can be attached to the mounting surface while ensuring the rigidity of the closed cross-section member, and abnormal noise is generated by rubbing the overlapping surfaces and the panel member when the vehicle is running. can be prevented.

この発明の態様として、上記閉断面部材が押出し成形により形成された押出し部材である。 As an aspect of the present invention, the closed cross-section member is an extruded member formed by extrusion molding.

上記構成によれば、閉断面部材が、パネル部材に接合するための接合フランジ部を被接合面に備えるとともに、内部に延在方向に沿った閉断面空間を備えた構成であっても、すなわち、閉断面部材がフランジ付の筒状の構成であっても押出し成形により押出し部材として容易に形成することができる。 According to the above configuration, even if the closed cross-section member has a joining flange portion for joining to the panel member on the surface to be joined and has a closed cross-section space along the extending direction inside, that is, Even if the closed-section member has a tubular configuration with a flange, it can be easily formed as an extruded member by extrusion molding.

この発明の態様として、上記閉断面部材は、車幅方向の両側に離間して配設された車体構成部材を連結するクロスメンバとして構成され、上記パネル部材は、上記車体構成部材と上記クロスメンバとを連結するブラケットとして構成され、上記接合フランジ部と上記パネル部材とは、上記被接合面の車幅方向における少なくとも、外端側と上記作業穴よりも車幅方向内側とに亘って互いに接合されたものである。 As an aspect of the present invention, the closed cross-section member is configured as a cross member that connects vehicle body structural members that are spaced apart on both sides in the vehicle width direction, and the panel member is configured to connect the vehicle body structural member and the cross member. The joint flange portion and the panel member are joined to each other over at least the outer end side in the vehicle width direction of the joint surface and the inner side of the work hole in the vehicle width direction. It is what was done.

上記構成によれば、上記車体構成部材と上記クロスメンバとを、ブラケットとしてのパネル部材を介して強固に接合できるとともに、クロスメンバは、自身の剛性を低下することなく、周辺に配置される取付部材を被取付面に取付けることができる。 According to the above configuration, the vehicle body component and the cross member can be firmly joined together via the panel member as the bracket, and the cross member can be mounted on the periphery without lowering its own rigidity. The member can be attached to the attachment surface.

この発明の態様として、上記車体構成部材は、リヤサスペンションを支持するリヤサイドハウジングで構成したものである。 As an aspect of the present invention, the vehicle body constituent member is constituted by a rear side housing that supports a rear suspension.

上記構成によれば、上記車体構成部材を、リヤサスペンションを支持するリヤサイドハウジングで構成したものである。ここで、パネル部材は上述したように、クロスメンバとリヤサイドハウジングとを連結するブラケットおよび連結部分の補強部材として、上記被接合面の延在方向における、一端部から少なくとも作業穴の周縁に至るまで車幅方向の広範囲に亘って接合されている。 According to the above configuration, the vehicle body constituent member is configured by the rear side housing that supports the rear suspension. Here, as described above, the panel member serves as a bracket that connects the cross member and the rear side housing and as a reinforcing member for the connecting portion, from one end to at least the peripheral edge of the work hole in the extending direction of the joint surface. It is joined over a wide range in the vehicle width direction.

よって、車両走行時に車輪からサスペンションに加わる荷重を、パネル部材を介してリヤサイドハウジングからクロスメンバへと効率よく伝達することができ、結果として、サスペンションの支持剛性を確保することができる。 Therefore, the load applied to the suspension from the wheels while the vehicle is running can be efficiently transmitted from the rear side housing to the cross member via the panel member, and as a result, the supporting rigidity of the suspension can be ensured.

この発明の態様として、上記閉断面部と上記取付け部材とは、共にアルミニウム又はアルミニウム合金で形成されたものであるとともに、上記被取付面に上記取付部材がリベット部材により押圧接合されたものである。 As an aspect of the present invention, the closed section member and the mounting member are both made of aluminum or an aluminum alloy, and the mounting member is press-joined to the mounting surface by a rivet member. be.

上記構成によれば、上記被取付面と上記取付け部材との取り付け箇所を通じて閉断面空間に閉断面部材の外側から水が侵入することがなく、上記被取付面に上記取付部材を強固に接合することができる。 According to the above configuration, the mounting member is firmly joined to the mounting surface without water entering the closed cross-section space from the outside of the closed cross-section member through the mounting location between the mounting surface and the mounting member. be able to.

この発明によれば、閉断面部材の剛性を確保しつつ被取付面に取付部材を取付けることができるとともに、互いに重ね合わせた被接合面とパネル部材とが車両走行時に擦れることにより発生する異音を防止することができる。 According to the present invention, it is possible to attach the mounting member to the mounting surface while ensuring the rigidity of the closed cross-section member, and at the same time, it is possible to generate abnormal noise due to rubbing between the overlapping surfaces to be joined and the panel member when the vehicle is running. can be prevented.

本実施形態の車両の車体構造の要部を車幅方向外側かつ車両後方から視た斜視図FIG. 2 is a perspective view of a main part of the vehicle body structure of the vehicle according to the present embodiment, viewed from the outside in the vehicle width direction and from the rear of the vehicle; 本実施形態の車両の車体構造の要部を車幅方向内側かつ車両前方から視た斜視図FIG. 2 is a perspective view of a main part of the vehicle body structure of the vehicle according to the present embodiment, viewed from the inside in the vehicle width direction and from the front of the vehicle; 本実施形態の車両の車体構造を車幅方向内側かつ車両上方から見た斜視図1 is a perspective view of a vehicle body structure of a vehicle according to the present embodiment, viewed from the inside in the vehicle width direction and from above the vehicle; 本実施形態の車両の車体構造の後部を車幅方向内側から視た斜視図The perspective view of the rear part of the vehicle body structure of the vehicle according to the present embodiment, viewed from the inside in the vehicle width direction. 図4において連結パネルおよびデフマウントを取り除いて示した斜視図FIG. 5 is a perspective view of FIG. 4 with the connecting panel and differential mount removed; 図3のA―A線矢視断面図(a)、B―B線矢視断面図(b)、図6(a)の要部拡大図AA cross-sectional view (a) in FIG. 3, BB cross-sectional view (b), enlarged view of the main part of FIG. 6(a) 従来の車両の車体構造の要部の斜視図(a)、図7(a)中のA-A線断面図(b)A perspective view (a) of a main part of a vehicle body structure of a conventional vehicle, and a cross-sectional view (b) taken along the line AA in FIG. 7(a)

この発明の一実施形態を以下図面と共に説明する。
本実施形態の車両は、押出成形されたアルミ合金製の複数のフレームを連結して車体骨格をなす、所謂、スペースフレーム構造を採用するとともに、側方ドアが2ドアタイプのセンターピラーレス構造を採用したスポーツカーである。このような車両の後部車体構造について、図1から図6を用いて説明する。但し、本実施形態の車両の後部車体構造は、左右対称形状であるため、車両右側の構造を中心に説明する。
An embodiment of the invention will be described below with reference to the drawings.
The vehicle of this embodiment adopts a so-called space frame structure in which a plurality of extruded aluminum alloy frames are connected to form a vehicle body frame, and also adopts a center pillarless structure with two side doors. It's a sports car. A rear body structure of such a vehicle will be described with reference to FIGS. 1 to 6. FIG. However, since the rear vehicle body structure of the vehicle of this embodiment has a symmetrical shape, the structure on the right side of the vehicle will be mainly described.

また、図示を明確にするため、図中において、リヤサスペンションや後輪等の図示を省略するとともに、図1中において、ロアアーム支持部21a,21b(ロアアーム前側支持部21aおよびロアアーム後側支持部21b)、アッパアーム支持部22、並びにダンパ支持部23の詳細な図示を省略している。 In order to clarify the illustration, illustration of the rear suspension, rear wheels, etc. is omitted in the drawing, and in FIG. ), the upper arm supporting portion 22, and the damper supporting portion 23 are omitted.

また、図中において、矢印Fは車両前方向を、矢印Rは車両右方向を、矢印Lは車両左方向を、矢印Uは車両上方向を、夫々示している。 In the drawings, arrow F indicates the front direction of the vehicle, arrow R indicates the right direction of the vehicle, arrow L indicates the left direction of the vehicle, and arrow U indicates the upward direction of the vehicle.

本実施形態の車両の車体構造は図示省略するが、左右両側に、左右夫々の後輪に対応して、ダブルウィッシュボーン式リヤサスペンションを備え、リヤサスペンションには、リヤサスダンパ、アッパアームおよびロアアームを備えている。 Although the vehicle body structure of the vehicle of this embodiment is not shown in the drawings, the left and right sides are provided with double wishbone type rear suspensions corresponding to the respective left and right rear wheels, and the rear suspensions are provided with rear suspension dampers, upper arms and lower arms. ing.

さらに本実施形態の車両の後部車体構造は主に、リヤサイドフレーム1、リヤサイドハウジング10、サイドシル3、リヤピラー35、連結フレーム4、および上下各側のクロスメンバ51,52(図2参照)を備えている。 Further, the rear vehicle body structure of the vehicle of this embodiment mainly includes a rear side frame 1, a rear side housing 10, a side sill 3, a rear pillar 35, a connecting frame 4, and upper and lower cross members 51 and 52 (see FIG. 2). there is

リヤサイドフレーム1は、押出成形されたアルミ合金製の押出し部材であって、車両前後方向に直線状に延びるとともに、長手方向の直交断面が略矩形の筒状体に形成されている。 The rear side frame 1 is an aluminum alloy extruded member that extends linearly in the front-rear direction of the vehicle and is formed into a tubular body having a substantially rectangular cross section perpendicular to the longitudinal direction.

そしてリヤサイドフレーム1は、車体後部の両サイドにおいて、リヤサイドハウジング10の前側から該リヤサイドハウジング10の後端を越えて該後端よりも車両後方に突出するように車両前後方向と略平行になるように配設されている。 The rear side frames 1 are formed on both sides of the rear portion of the vehicle body so as to be substantially parallel to the longitudinal direction of the vehicle so as to protrude rearward of the vehicle beyond the rear end of the rear side housing 10 from the front side of the rear side housing 10 . are placed in

リヤサイドフレーム1の後端には図示省略するが、セットプレートおよび取付けプレートを介して、衝突時の衝撃を吸収する筒状体等からなる左右一対のクラッシュカンの前端が接続されている。なお、左右一対のクラッシュカン8の後端は、バンパレインによって連結されている(図示省略)。 Although not shown, the rear end of the rear side frame 1 is connected to the front ends of a pair of left and right crash cans, which are formed of tubular bodies that absorb shocks in the event of a collision, via a set plate and a mounting plate. The rear ends of the pair of left and right crash cans 8 are connected by bumper rains (not shown).

リヤサイドハウジング10は、リヤサスペンションを車幅方向内側から支持可能に車両側面視でリヤサスペンション(図示省略)と略重複する位置に設けられ、例えばアルミニウム合金をダイキャスト成型することにより製造される。 The rear side housing 10 is provided at a position substantially overlapping a rear suspension (not shown) in a vehicle side view so as to be able to support the rear suspension from the inside in the vehicle width direction, and is manufactured, for example, by die-casting an aluminum alloy.

具体的には、リヤサイドハウジング10は、上側縦壁部12と、上側縦壁部12よりも車幅方向内側に離間した位置に有する下側縦壁部13と、上側縦壁部12の上端と上記下側縦壁部13の下端とを車幅方向に繋ぐように車幅方向に略水平に延びる段部14とを備えている。 Specifically, the rear side housing 10 includes an upper vertical wall portion 12, a lower vertical wall portion 13 which is spaced inwardly of the upper vertical wall portion 12 in the vehicle width direction, and an upper end of the upper vertical wall portion 12. A stepped portion 14 extending substantially horizontally in the vehicle width direction is provided so as to connect the lower end of the lower vertical wall portion 13 in the vehicle width direction.

図1、図3、図5に示すように、リヤサイドハウジング10の上側縦壁部12の車両側面視で中央部には、車両内側へ膨出する膨出部18が形成されている。膨出部18は内部が車幅方向外側へ開口するように中空状に形成されている。 As shown in FIGS. 1, 3, and 5, a bulging portion 18 that bulges toward the inside of the vehicle is formed in the central portion of the upper vertical wall portion 12 of the rear side housing 10 as viewed from the side of the vehicle. The bulging portion 18 is formed in a hollow shape so that the inside thereof opens outward in the vehicle width direction.

図1に示すように、リヤサイドハウジング10の車幅方向外面の下部には、平面視A型のロアアーム(図示省略)を枢支するロアアーム前側支持部21aとロアアーム後側支持部21bとが設けられている。 As shown in FIG. 1, a lower arm front side support portion 21a and a lower arm rear side support portion 21b for pivotally supporting a lower arm (not shown) having an A shape in plan view are provided on the lower portion of the outer surface of the rear side housing 10 in the vehicle width direction. ing.

ロアアーム前側支持部21aは、ロアアームの車両前側の車幅方向内端を枢支するとともに、ロアアーム後側支持部21bは、ロアアームの車両後側の車幅方向内端を枢支するものであり、リヤサイドハウジング10の下側縦壁部13の下部において車両前後方向に互いに離間して設けられている。 The lower arm front side support portion 21a pivotally supports the vehicle width direction inner end of the lower arm on the vehicle front side, and the lower arm rear side support portion 21b pivotally supports the vehicle width direction inner end of the lower arm on the vehicle rear side. They are provided in the lower portion of the lower vertical wall portion 13 of the rear side housing 10 so as to be separated from each other in the vehicle front-rear direction.

リヤサイドハウジング10の車幅方向外面における車両上下方向の中間かつ車両前側の位置、すなわち、リヤサイドハウジング10の上側縦壁部12の下部の前側の位置には、平面視I型のアッパアーム(図示省略)の車幅方向内端を枢支するアッパアーム支持部22が設けられている。 An I-shaped upper arm (not shown) in a plan view is provided at a position in the vehicle up-down direction middle and on the front side of the vehicle on the outer surface of the rear side housing 10 in the vehicle width direction, that is, at a position on the front side of the lower portion of the upper vertical wall portion 12 of the rear side housing 10 . An upper arm support portion 22 is provided which pivotally supports the inner end of the vehicle width direction.

リヤサイドハウジング10の上部、すなわち、リヤサイドハウジング10の上側縦壁部12の上部の車幅方向外面における、車両前後方向の中間位置には、車両上方程車幅方向内側に位置するように傾斜した姿勢で車両上下方向に沿って延びるリヤサスダンパ(図示省略)の上端部を枢支するダンパ支持部23が設けられている。 At an intermediate position in the vehicle front-rear direction on the vehicle width direction outer surface of the upper portion of the rear side housing 10 , that is, the upper vertical wall portion 12 of the rear side housing 10 , there is a posture inclined so as to be positioned inwardly in the vehicle width direction as the vehicle goes up. A damper support portion 23 is provided for pivotally supporting the upper end portion of a rear suspension damper (not shown) extending along the vertical direction of the vehicle.

なお図1、図3~図5に示すように、リヤサイドフレーム1は、リヤサイドハウジング10の上側縦壁部12と段部14とのコーナー部24に配設されている。 As shown in FIGS. 1 and 3 to 5, the rear side frame 1 is arranged at a corner portion 24 between the upper vertical wall portion 12 and the stepped portion 14 of the rear side housing 10. As shown in FIG.

また図1~図3に示すように、リヤサイドハウジング10の前部は、後述する3本の連結フレーム4の各後端を車幅方向外面側から接合可能に構成されている。 Further, as shown in FIGS. 1 to 3, the front portion of the rear side housing 10 is configured such that the rear ends of three connecting frames 4, which will be described later, can be joined from the outer surface side in the vehicle width direction.

具体的には、リヤサイドハウジング10の前部かつ車両上下方向の中間部には、3本の連結フレーム4のうち、最も上方に位置する後述する第1上側フレーム41の後端を接合する第1上側フレーム後端接合部27が設けられている。 Specifically, a first upper frame 41 (to be described later), which is the uppermost one of the three connecting frames 4, is joined to the front portion of the rear side housing 10 and an intermediate portion in the vertical direction of the vehicle. An upper frame rear end joint 27 is provided.

リヤサイドハウジング10の前部かつ車両上下方向の中間部には、3本の連結フレーム4のうち、車両上下方向において他の2本の連結フレーム41,43の間に位置する後述する第2上側フレーム42の後端を接合する第2上側フレーム後端接合部28が設けられている。 A second upper frame, which will be described later, is positioned between the other two connecting frames 41 and 43 of the three connecting frames 4 in the vehicle vertical direction at the front portion of the rear side housing 10 and in the middle portion in the vehicle vertical direction. A second upper frame rear end joint 28 is provided to join the rear end of 42 .

リヤサイドハウジング10の前部かつ下部には、3本の連結フレーム4のうち、最も下方に位置する後述する下側フレーム43の後端を接合する下側フレーム後端接合部29が設けられている。 A lower frame rear end joint portion 29 is provided at the front and lower portion of the rear side housing 10 to join the rear end of a later-described lower frame 43 located at the lowest position among the three connecting frames 4 . .

なお、第1上側フレーム後端接合部27と第2上側フレーム後端接合部28とは上述したように、共にリヤサイドハウジング10におけるアッパアーム支持部22の前側周辺部分において上下各側で互いに隣接するように設けられている(図1~図3参照)。 As described above, the first upper frame rear end joint portion 27 and the second upper frame rear end joint portion 28 are arranged so as to be adjacent to each other on the upper and lower sides in the front peripheral portion of the upper arm support portion 22 in the rear side housing 10 . (see FIGS. 1 to 3).

上述したリヤサイドハウジング10は、上側縦壁部12と下側縦壁部13と段部14とが、単一の部材であるアルミニウム合金により一体に形成されている。
換言すると、リヤサイドハウジング10は上述したように、アルミニウム合金をダイキャスト成型することにより、ロアアーム支持部21a,21b、アッパアーム支持部22、ダンパ支持部23、第1上側フレーム後端接合部27、下側フレーム後端接合部29、および第2上側フレーム後端接合部28を含めた略全体が単一の部材により一体に形成されている。
In the rear side housing 10 described above, the upper vertical wall portion 12, the lower vertical wall portion 13, and the stepped portion 14 are integrally formed of an aluminum alloy as a single member.
In other words, as described above, the rear side housing 10 is formed by die-casting an aluminum alloy to form the lower arm support portions 21a and 21b, the upper arm support portion 22, the damper support portion 23, the first upper frame rear end joint portion 27, the lower Substantially the entirety including the side frame rear end joint portion 29 and the second upper frame rear end joint portion 28 is integrally formed of a single member.

また、上述したサイドシル3は、押出成形されたアルミ合金製の押出し部材であって、図1、図2に示すようにリヤサイドハウジング10に対して車両前方かつ車幅方向外側へ離間して配設されている。サイドシル3は、リヤサイドハウジング10の前方に車両底面を構成するフロアパネル(図示省略)の両サイドにおいて車両前後方向に沿って配設されている。 The side sill 3 described above is an extruded member made of aluminum alloy, and is spaced apart from the rear side housing 10 in the vehicle front direction and vehicle width direction outside as shown in FIGS. 1 and 2 . It is The side sills 3 are arranged along the vehicle front-rear direction on both sides of a floor panel (not shown) forming the bottom surface of the vehicle in front of the rear side housing 10 .

サイドシル3は、上下各側に互いに離間して配設された閉断面部31,32と、これら上下各側の閉断面部31,32を連結する連結壁33とで形成されている。 The side sill 3 is formed of closed cross-section portions 31 and 32 spaced apart from each other on the upper and lower sides, and a connecting wall 33 connecting the closed cross-section portions 31 and 32 on the upper and lower sides.

上下各側の閉断面部31,32(上側閉断面部31と下側閉断面部32の夫々)は共に、サイドシル3の車両前後方向の全長に沿って延びる閉断面空間を内部に有している。 Each of the upper and lower closed cross-section portions 31 and 32 (the upper closed cross-section portion 31 and the lower closed cross-section portion 32, respectively) has therein a closed cross-section space extending along the entire length of the side sill 3 in the vehicle front-rear direction. there is

図2に示すように、サイドシル3の前端には、車両上下方向に沿って延びるヒンジピラー34が立設されている。ヒンジピラー34は、内部に車両上下方向に沿って直線状に延びる閉断面空間を有するように押出成形されたアルミ合金製の押出し部材であって、車両上方程車両前方に位置するように傾斜した姿勢で上側閉断面部31から車両上方へ突き出すように下側閉断面部32に立設されている。 As shown in FIG. 2, the front end of the side sill 3 is provided with a hinge pillar 34 extending in the vertical direction of the vehicle. The hinge pillar 34 is an extruded member made of aluminum alloy that is extruded so as to have a closed cross-sectional space that extends linearly along the vertical direction of the vehicle. is erected on the lower closed cross-section portion 32 so as to protrude upward from the upper closed cross-section portion 31 of the vehicle.

図1、図2、図4、図5に示すように、サイドシル3の後端には、車両上下方向に沿って延びるリヤピラー35(Cピラー)が立設されている。リヤピラー35は、内部に車両上下方向に沿って直線状に延びる閉断面空間を有するように押出成形されたアルミ合金製の押出し部材であって、車両上方程車両後方に位置するように傾斜した姿勢で上側閉断面部31から車両上方へ突き出すように下側閉断面部32に立設されている。
そしてヒンジピラー34は、上側閉断面部31と下側閉断面部32と連結壁33との各対向部位においてアーク溶接等により一体に接合されている。
As shown in FIGS. 1, 2, 4, and 5, rear pillars 35 (C pillars) are erected at the rear ends of the side sills 3 and extend along the vertical direction of the vehicle. The rear pillar 35 is an aluminum alloy extruded member that is extruded so as to have a closed cross-sectional space that extends linearly along the vertical direction of the vehicle. is erected on the lower closed cross-section portion 32 so as to protrude upward from the upper closed cross-section portion 31 of the vehicle.
The hinge pillar 34 is integrally joined to the upper closed cross-section portion 31, the lower closed cross-section portion 32, and the connecting wall 33 by arc welding or the like at respective opposing portions.

ここで、以下の説明では一体に接合されたサイドシル3とリヤピラー35とを総称して結合体30とも称する。なお、図1、図2、図4、図5中の符号36a,36bは、リヤピラー35自体や、リヤピラー35とサイドシル3との接合部分を補強するサイドシル36である。 Here, in the following description, the side sill 3 and the rear pillar 35 that are integrally joined together are also collectively referred to as a combined body 30 . Reference numerals 36a and 36b in FIGS. 1, 2, 4, and 5 denote side sills 36 that reinforce the rear pillars 35 themselves and joints between the rear pillars 35 and the side sills 3. FIG.

続いて連結フレーム4について説明する。
連結フレーム4は、結合体30と、リヤサイドハウジング10との間において、これらを連結するように車両前後方向に沿って直線状に延びている。連結フレーム4は、複数本を備え、夫々車両上下方向に互いに離間するように配設されている。
Next, the connection frame 4 will be explained.
The connecting frame 4 extends linearly along the vehicle front-rear direction between the connecting body 30 and the rear side housing 10 so as to connect them. A plurality of connection frames 4 are provided and arranged so as to be spaced apart from each other in the vertical direction of the vehicle.

具体的に連結フレーム4は図1~図3に示すように、車体後部の左右各側において、第1上側フレーム41、第2上側フレーム42および下側フレーム43の3本ずつを備えており、この順に車両上方から下方へ配設されている。 Specifically, as shown in FIGS. 1 to 3, the connecting frame 4 is provided with three each of a first upper frame 41, a second upper frame 42 and a lower frame 43 on each of the left and right sides of the rear portion of the vehicle body. They are arranged in this order from the top to the bottom of the vehicle.

第1上側フレーム41は、サイドシル3の上端よりも車両上方位置において、略水平に配設されている。そして、第1上側フレーム41の前端は、リヤピラー35のサイドシル3の上端よりも車両上方位置に該リヤピラー35の後面から接合されている。第1上側フレーム41の後端は、リヤサイドハウジング10における上述した第1上側フレーム後端接合部27に車幅方向外面側から接合されている。 The first upper frame 41 is arranged substantially horizontally above the upper end of the side sill 3 in the vehicle. The front end of the first upper frame 41 is joined to the rear surface of the rear pillar 35 at a position higher than the upper end of the side sill 3 of the rear pillar 35 in the vehicle. The rear end of the first upper frame 41 is joined to the above-described first upper frame rear end joining portion 27 of the rear side housing 10 from the vehicle width direction outer surface side.

第2上側フレーム42は図1に示すように、車両後方程車両上方に位置するように車両側面視で傾斜して延びている。そして、第2上側フレーム42の前端は、リヤピラー35のサイドシル3の車両上下方向における、上側閉断面部31の後端に相当する位置において、該リヤピラー35の後面から接合されている。第2上側フレーム42の後端は、リヤサイドハウジング10における上述した第2上側フレーム後端接合部28に車幅方向外面側から接合されている。 As shown in FIG. 1, the second upper frame 42 extends obliquely when viewed from the side of the vehicle so as to be positioned higher toward the rear of the vehicle. The front end of the second upper frame 42 is joined to the rear surface of the rear pillar 35 at a position corresponding to the rear end of the upper closed section portion 31 in the vehicle vertical direction of the side sill 3 of the rear pillar 35 . The rear end of the second upper frame 42 is joined to the above-described second upper frame rear end joining portion 28 of the rear side housing 10 from the vehicle width direction outer surface side.

下側フレーム43は、リヤピラー35のサイドシル3の下側閉断面部32の位置であって、ロアアーム前側支持部21aよりも下側位置において、側面視で水平に配設されている。下側フレーム43の前端は、サイドシル3の下側閉断面部32の後端に接合されている。下側フレーム43の後端は、リヤサイドハウジング10における上述した下側フレーム後端接合部29に車幅方向外面側から接合されている。 The lower frame 43 is arranged horizontally in a side view at the position of the lower closed section portion 32 of the side sill 3 of the rear pillar 35 and below the lower arm front support portion 21a. A front end of the lower frame 43 is joined to a rear end of the lower closed section portion 32 of the side sill 3 . The rear end of the lower frame 43 is joined to the above-described lower frame rear end joining portion 29 of the rear side housing 10 from the vehicle width direction outer surface side.

上述した3本の連結フレーム4は、共に、車両後方程車幅方向内側に位置するように傾斜して直線状に延びるとともに、結合体30およびリヤサイドハウジング10の夫々に対して、例えばアーク溶接(ミグ溶接)により一体に接合されている。 All of the three connecting frames 4 described above extend linearly at an angle so as to be located inward in the vehicle width direction toward the rear of the vehicle, and the coupling body 30 and the rear side housing 10 are respectively welded by, for example, arc welding ( are joined together by MIG welding).

また図2に示すように、左右一対のリヤサイドハウジング10間には、上下各側のクロスメンバ(上側クロスメンバ51、下側クロスメンバ52)を備えている。 As shown in FIG. 2, between the pair of left and right rear side housings 10 are provided upper and lower cross members (an upper cross member 51 and a lower cross member 52).

上下各側のクロスメンバ51,52は共に、車幅方向に直線状に延びる閉断面空間を有するように押出成形されたアルミ合金製の押出し部材である。上下各側のクロスメンバ51,52のうち、上側クロスメンバ51は図2、図4に示すように、車幅方向の外端が左右夫々に対応するリヤサイドハウジング10へ連結パネル53を介して接続されている。 Both the upper and lower cross members 51 and 52 are extruded members made of aluminum alloy which are extruded so as to have a closed cross-sectional space extending linearly in the vehicle width direction. Of the cross members 51 and 52 on the upper and lower sides, the upper cross member 51 is connected, as shown in FIGS. It is

上側クロスメンバ51の上面部51aには、前面部51bの前上端よりも車両前方へ突出する前縁フランジ部51afおよび後面部51cの後上端よりも車両後方へ突出する後縁フランジ部51arが車幅方向の全長に亘って形成されている。 On the upper surface portion 51a of the upper cross member 51, a front edge flange portion 51af projecting forward from the front upper end of the front surface portion 51b and a rear edge flange portion 51ar projecting rearward from the rear upper end of the rear surface portion 51c are provided. It is formed over the entire length in the width direction.

図4、図5に示すように、上側クロスメンバ51の上面部51aは、前後各縁のフランジ部51af,51arも含めて全体が平面状に形成されている。 As shown in FIGS. 4 and 5, the upper surface portion 51a of the upper cross member 51 is formed flat as a whole, including the flange portions 51af and 51ar at the front and rear edges.

上側クロスメンバ51は、車幅方向外端を左右夫々に対応するリヤサイドフレーム1の上面部1aの前部に下面が載置されるようにしてリヤサイドフレーム1によって支持されている。これにより図3に示すように、上側クロスメンバ51は、車両側面視でアッパアーム支持部22(図1参照)の上側周辺部位、すなわち、第1上側フレーム後端接合部27と略一致する部位に配設されている。 The upper cross member 51 is supported by the rear side frame 1 such that the lower surface is placed on the front portion of the upper surface portion 1a of the rear side frame 1 corresponding to the left and right outer ends of the upper cross member 51 in the vehicle width direction. As a result, as shown in FIG. 3, the upper cross member 51 is located at the upper peripheral portion of the upper arm support portion 22 (see FIG. 1) in a vehicle side view, that is, at a portion that substantially coincides with the rear end joint portion 27 of the first upper frame. are arranged.

さらに本実施形態においては図1~図5に示すように、上側クロスメンバ51の後方に、隔壁パネル54(図1~図3参照)と補機取付部材60(図3~図5参照)とを備えている。 Further, in this embodiment, as shown in FIGS. 1 to 5, a partition wall panel 54 (see FIGS. 1 to 3) and an accessory mounting member 60 (see FIGS. 3 to 5) are provided behind the upper cross member 51. It has

隔壁パネル54は図2に示すように、デフ等の補機73(図4参照)を収容する補機収容空間55と荷室空間56とを仕切る部材であって図1~図3に示すように、上側クロスメンバ51の上面部51aの後縁フランジ部51arから車両後方へ水平に延びる水平部54aと、水平部54aの後端から下方へ垂下する縦壁部54bとで車両側面視でL字形状に一体形成されている。 As shown in FIG. 2, the partition wall panel 54 is a member that separates an auxiliary machine storage space 55 that houses an auxiliary machine 73 (see FIG. 4) such as a differential from a cargo room space 56. As shown in FIGS. Further, a horizontal portion 54a horizontally extending rearward of the vehicle from the rear edge flange portion 51ar of the upper surface portion 51a of the upper cross member 51, and a vertical wall portion 54b hanging downward from the rear end of the horizontal portion 54a are L in the vehicle side view. It is integrally formed in the shape of a letter.

上側クロスメンバ51の前端(51af)よりも後方かつ上方、並びに縦壁部54bの後方は、荷室空間56として構成されている。水平部54aは上方の荷室空間56と下方の補機収容空間55とを仕切っており、上側クロスメンバ51の上面部51aは、荷室空間56の底面の前側部分として形成されている。荷室空間56における隔壁パネル54よりも後方には、水平部54aよりも一段低く形成された荷室凹状空間56uを有している(図1、図2参照)。隔壁パネル54の縦壁部54bは、荷室凹状空間56uの前壁として形成されている。 A cargo room space 56 is formed behind and above the front end (51af) of the upper cross member 51 and behind the vertical wall portion 54b. The horizontal portion 54 a separates an upper luggage compartment space 56 and a lower accessory storage space 55 , and the upper surface portion 51 a of the upper cross member 51 is formed as a front portion of the bottom surface of the luggage compartment space 56 . Behind the bulkhead panel 54 in the luggage compartment space 56 is a luggage compartment recessed space 56u formed one step lower than the horizontal portion 54a (see FIGS. 1 and 2). A vertical wall portion 54b of the partition panel 54 is formed as a front wall of the luggage compartment concave space 56u.

図3~図5に示すように、補機取付部材60は、アルミ合金等の金属製のダイキャスト部材であり、車両平面視で上側クロスメンバ51と左右各側のリヤサイドフレーム1との車両平面視におけるコーナー部に夫々備えている。補機取付部材60は、上側クロスメンバ51に対して車両後方で隣接するように該上側クロスメンバ51と同じ高さにおいてリヤサイドフレーム1の上面部1aに載置するように配設される。 As shown in FIGS. 3 to 5, the accessory mounting member 60 is a die-cast member made of a metal such as an aluminum alloy. They are provided at the corners in view. The accessory attachment member 60 is placed on the upper surface portion 1a of the rear side frame 1 at the same height as the upper cross member 51 so as to be adjacent to the upper cross member 51 in the rear of the vehicle.

本実施形態の補機取付部材60は、補機収容空間55に収容された補機73としてのデフを、デフマウント69(図4において車両右側のみ図示)を介して取付け支持する。 The accessory mounting member 60 of this embodiment attaches and supports the differential as the accessory 73 accommodated in the accessory accommodation space 55 via a differential mount 69 (only the right side of the vehicle is shown in FIG. 4).

補機収容空間55は、上側クロスメンバ51の後方かつ、左右一対のリヤサイドフレーム1の車幅方向の間の空間に有している。なお、この補機収容空間55は上述したように、隔壁パネル54によって荷室空間56と仕切られている。これにより、隔壁パネル54の水平部54aは、左右一対の補機取付部材60も含めて補機73を上方から覆っている。 The accessory accommodation space 55 is provided in the space behind the upper cross member 51 and between the pair of left and right rear side frames 1 in the vehicle width direction. As described above, the accessory storage space 55 is separated from the luggage compartment space 56 by the partition wall panel 54 . Thus, the horizontal portion 54a of the partition panel 54 covers the accessory 73 including the pair of left and right accessory attachment members 60 from above.

図3~図5に示すように、補機取付部材60は、下部にマウント取付部62(図4、図5参照)が形成された本体部61と、車幅方向外側フランジ部63と上側フランジ部64(図5参照)と前壁フランジ部65(図4、図5参照)と後壁フランジ部66(図5参照)とで一体形成されている。 As shown in FIGS. 3 to 5, the accessory mounting member 60 includes a body portion 61 having a mount mounting portion 62 (see FIGS. 4 and 5) formed at the bottom, a vehicle width direction outer flange portion 63 and an upper flange portion. A portion 64 (see FIG. 5), a front wall flange portion 65 (see FIGS. 4 and 5), and a rear wall flange portion 66 (see FIG. 5) are integrally formed.

図3に示すように、車幅方向外側フランジ部63は、本体部61の下端かつ車幅方向の外縁から車両前後方向に沿って車幅方向外側に突出形成されている。図5に示すように、上側フランジ部64は、本体部61の上端かつ車幅方向内端から車両前後方向に沿って車幅方向内側に突出形成されている。図4、図5に示すように、前壁フランジ部65は、車幅方向外側フランジ部63および上側フランジ部64の各前端から本体部61の前壁を形成するように突出形成されている。図5に示すように、後壁フランジ部66は、本体部61および上側フランジ部64の各後端から本体部61の後壁を形成するように突出形成されている。 As shown in FIG. 3 , the vehicle width direction outer flange portion 63 protrudes outward in the vehicle width direction from the lower end of the main body portion 61 and the outer edge in the vehicle width direction along the vehicle front-rear direction. As shown in FIG. 5 , the upper flange portion 64 protrudes inward in the vehicle width direction along the vehicle front-rear direction from the upper end and the vehicle width direction inner end of the main body portion 61 . As shown in FIGS. 4 and 5 , the front wall flange portion 65 protrudes from the front ends of the vehicle width direction outer flange portion 63 and the upper flange portion 64 so as to form the front wall of the main body portion 61 . As shown in FIG. 5 , the rear wall flange portion 66 protrudes from the respective rear ends of the main body portion 61 and the upper flange portion 64 so as to form the rear wall of the main body portion 61 .

補機取付部材60は、前壁フランジ部65が上側クロスメンバ51の後面部51cに、上側フランジ部64および後壁フランジ部66が連結パネル53に(図4、図5参照)、車幅方向外側フランジ部63がリヤサイドフレーム1の上面部1aに(図5参照)、夫々接合されている。 The accessory attachment member 60 has a front wall flange portion 65 attached to the rear surface portion 51c of the upper cross member 51, and an upper flange portion 64 and a rear wall flange portion 66 attached to the connection panel 53 (see FIGS. 4 and 5). The outer flange portions 63 are joined to the upper surface portion 1a of the rear side frame 1 (see FIG. 5).

これにより図5に示すように、補機取付部材60は、リヤサイドフレーム1と上側クロスメンバ51との車両平面視におけるコーナー部において、マウント取付部62が下方に有する補機収容空間55を臨むように、リヤサイドフレーム1と上側クロスメンバ51と連結パネル53とに跨って取り付けられている。 As a result, as shown in FIG. 5, the accessory mounting member 60 is arranged so that the accessory housing space 55 provided below the mount mounting portion 62 faces the corner portion between the rear side frame 1 and the upper cross member 51 in plan view of the vehicle. , is mounted across the rear side frame 1 , the upper cross member 51 and the connection panel 53 .

連結パネル53は、上側クロスメンバ51をリヤサイドハウジング10に連結するためのブラケットであるとともに車両走行時にリヤサスペンションに備えたリヤサスダンパ(図示省略)の上端部から荷重が入力されるダンパ支持部23を補強する補強部材を兼ねるものである。 The connection panel 53 is a bracket for connecting the upper cross member 51 to the rear side housing 10, and supports a damper support portion 23 to which a load is input from the upper end portion of a rear suspension damper (not shown) provided in the rear suspension when the vehicle is running. It also serves as a reinforcing member for reinforcement.

図2、図4に示すように、連結パネル53は、平面部53aと縦面部53bと隆起部53cと段落ち面部53dと後面部53eを備えて金属により一体に形成されている。 As shown in FIGS. 2 and 4, the connection panel 53 is integrally made of metal and includes a flat surface portion 53a, a vertical surface portion 53b, a raised portion 53c, a stepped surface portion 53d, and a rear surface portion 53e.

図4に示すように、平面部53aは、上側クロスメンバ51の上面部51aの前縁(51af)から補機取付部材60の後端との間において車両前後方向に延びるとともに、補機取付部材60の車幅方向内端とリヤサイドハウジング10の上側縦壁部12の車幅方向内面との間において車幅向に延びており、全体として平面状(平坦状)に形成されている。この平面部53aは、上側クロスメンバ51の車幅方向外側部分51ao(図5参照)の上面部51a、第1上側フレーム41の後部側の上面部41u(図4参照)、補機取付部材60の上側フランジ部64(図5参照)に跨って上方から配置されており、これらとの対向部において互いに接合されている。 As shown in FIG. 4, the planar portion 53a extends in the vehicle front-rear direction between the front edge (51af) of the upper surface portion 51a of the upper cross member 51 and the rear end of the accessory mounting member 60. It extends in the vehicle width direction between the vehicle width direction inner end of 60 and the vehicle width direction inner surface of the upper vertical wall portion 12 of the rear side housing 10, and is formed in a plane shape (flat shape) as a whole. The plane portion 53a includes an upper surface portion 51a of a vehicle width direction outer portion 51ao (see FIG. 5) of the upper cross member 51, an upper surface portion 41u (see FIG. 4) of the first upper frame 41 on the rear side, and an accessory mounting member 60. are arranged from above, straddling the upper flange portion 64 (see FIG. 5), and are joined to each other at portions facing them.

段落ち面部53dは、平面部53aよりも車両後方において平面部53aに対して一段低い位置に配置され、リヤサイドフレーム1の上面部1aに接合されている(図4参照)。 The stepped surface portion 53d is arranged at a position one step lower than the flat portion 53a behind the flat portion 53a, and is joined to the upper surface portion 1a of the rear side frame 1 (see FIG. 4).

後面部53eは、平面部53aの後端の車幅方向における、補機取付部材60の後壁フランジ部66(図5参照)に相当する部位から下後方向へ傾斜して延び、該後壁フランジ部66に接合される(図4参照)。 The rear surface portion 53e extends obliquely downward and rearward from a portion corresponding to the rear wall flange portion 66 (see FIG. 5) of the accessory mounting member 60 in the vehicle width direction of the rear end of the flat portion 53a. It is joined to the flange portion 66 (see FIG. 4).

縦面部53bは、平面部53a、段落ち面部53dおよび後述する隆起部53cの各車幅方向外端から縦壁状に形成され、リヤサイドハウジング10の上側縦壁部12および、第2上側フレーム42の上面部41uの車幅方向外端から上方へ突出されるリブ41tに車幅方向内面から接合される(図4参照)。 The vertical surface portion 53b is formed in a vertical wall shape from the vehicle width direction outer ends of the flat surface portion 53a, the stepped surface portion 53d, and the later-described raised portion 53c. is joined to the rib 41t projecting upward from the outer end of the upper surface portion 41u in the vehicle width direction from the inner surface in the vehicle width direction (see FIG. 4).

隆起部53cは図2、図4に示すように、リヤサイドフレーム1の上面部1aとリヤサイドハウジング10の上側縦壁部12とのコーナー部24において平面部53aおよび段落ち面部53dに対して上方かつ縦面部53bに対して車幅方向内側に隆起している。隆起部53cは、連結パネル53をリヤサイドハウジング10に接合した状態において、上側縦壁部12に設けた膨出部18(図1、図3参照)を内部に格納するように膨出部18の車幅方向外面に対して車幅方向内面から隣接して配されるように車幅方向外側程低くなるように傾斜して形成されている。 As shown in FIGS. 2 and 4, the protuberant portion 53c is located above and above the flat portion 53a and the stepped surface portion 53d at the corner portion 24 between the upper surface portion 1a of the rear side frame 1 and the upper vertical wall portion 12 of the rear side housing 10. It protrudes inward in the vehicle width direction with respect to the vertical surface portion 53b. The raised portion 53c is formed so as to accommodate the raised portion 18 provided on the upper vertical wall portion 12 (see FIGS. 1 and 3) in a state where the connection panel 53 is joined to the rear side housing 10. It is formed so as to be lower toward the outer side in the vehicle width direction so as to be adjacent to the outer surface in the vehicle width direction from the inner surface in the vehicle width direction.

ここで、ダンパ支持部23は、リヤサイドハウジング10における、膨出部18の車幅方向外面に設けられている。このため、車両走行時にリヤサスダンパからダンパ支持部23に入力される荷重に対して、該ダンパ支持部23を連結パネル53における特に隆起部53cによって車幅方向内側から補強することができる。 Here, the damper support portion 23 is provided on the vehicle width direction outer surface of the bulging portion 18 in the rear side housing 10 . Therefore, the damper support portion 23 can be reinforced from the inside in the vehicle width direction by the raised portion 53c of the connection panel 53, in particular, against the load input to the damper support portion 23 from the rear suspension damper while the vehicle is running.

ところで、連結パネル53の平面部53aは、その一部(前側部分)が上述したように、上側クロスメンバ51の上面部51aの車幅方向外側部分51aoに上方から配置されている(図4参照)。 By the way, as described above, a portion (front portion) of the flat portion 53a of the connecting panel 53 is arranged from above on the vehicle width direction outer portion 51ao of the upper surface portion 51a of the upper cross member 51 (see FIG. 4). ).

ここで、上側クロスメンバ51の上面部51aにおける、連結パネル53の平面部53aが配置される車幅方向外側部分51aoは、該上面部51aの車幅方向外端から車幅方向内側へ延びる部分であって、少なくとも車両前後方向における補機取付部材60の車幅方向内端に相当する位置に至る部分に相当する(図5参照)。 Here, a vehicle width direction outer portion 51ao of the upper surface portion 51a of the upper cross member 51 where the flat portion 53a of the connection panel 53 is arranged is a portion extending inward in the vehicle width direction from the vehicle width direction outer end of the upper surface portion 51a. It corresponds to at least a portion in the vehicle front-rear direction that reaches a position corresponding to the inner end of the accessory mounting member 60 in the vehicle width direction (see FIG. 5).

そして図4に示すように、上面部51aの車幅方向外側部分51aoにおける、車両前後方向の全長(前端と後端との間)に亘って平面部53aが上方から配置される。 As shown in FIG. 4, a flat portion 53a is arranged from above over the entire length in the vehicle front-rear direction (between the front end and the rear end) of the vehicle width direction outer portion 51ao of the upper surface portion 51a.

このような上面部51aと平面部53aとの重ね合わせ部分Mにおいて、上面部51aの前縁と平面部53aの前縁とは車幅方向に沿って車両前後方向に一致している。 At the overlapping portion M between the upper surface portion 51a and the flat surface portion 53a, the front edge of the upper surface portion 51a and the front edge of the flat surface portion 53a are aligned in the vehicle longitudinal direction along the vehicle width direction.

また図6(a)(b)に示すように、重ね合わせ部分Mのうち、上面部51aの前縁フランジ部51afと後縁フランジ部51arとの夫々に相当する部位において、上面部51aと平面部53aとは、互いに接合されている。すなわち、上面部51aの前縁フランジ部51afと、これに重合する平面部53aの対応部分とは、車幅方向に沿ってアーク溶接により互いに接合されている(図4、図6(a)(b)中において溶接箇所を示す符号w参照)。同様に上面部51aの後縁フランジ部51arと、これに重合する平面部53aの対応部分とは、車幅方向に沿ってアーク溶接により互いに接合されている(同符号w参照)。 Further, as shown in FIGS. 6A and 6B, in the superimposed portion M, at portions corresponding to the front edge flange portion 51af and the rear edge flange portion 51ar of the upper surface portion 51a, the upper surface portion 51a and the flat surface The portions 53a are joined to each other. That is, the front edge flange portion 51af of the upper surface portion 51a and the corresponding portion of the planar portion 53a that overlaps with the front edge flange portion 51af are joined to each other by arc welding along the vehicle width direction (Figs. 4 and 6(a) ( b) see symbol w for welding points in). Similarly, the rear edge flange portion 51ar of the upper surface portion 51a and the corresponding portion of the plane portion 53a that overlaps with this are joined together by arc welding along the vehicle width direction (see the same reference numeral w).

一方図4、図5、図6(a)(b)に示すように、上面部51aにおける、前縁フランジ部51afの後端と後縁フランジ部51arの前端との車両前後方向の間の部分(以下、「上面部閉断面構成部分51am」と称する。)は、上側クロスメンバ51の内部の閉断面空間51sの上面を画成する部分に相当する(図4、図5中のドットを付した領域参照)。 On the other hand, as shown in FIGS. 4, 5, 6A and 6B, the portion of the upper surface portion 51a between the rear end of the front edge flange portion 51af and the front end of the rear edge flange portion 51ar in the vehicle front-rear direction. (Hereinafter referred to as "upper surface portion closed cross-section forming portion 51am") corresponds to the portion defining the upper surface of the closed cross-section space 51s inside the upper cross member 51 (dotted in FIGS. 4 and 5). area).

重ね合わせ部分Mにおいて、上面部51aは上述したように平面部53aと面接触状態に重合しているが、上面部51aのうち、上面部閉断面構成部分51amは、前後各側のフランジ部51af,51arと異なり、平面部53aと接合されていない。すなわち、上面部閉断面構成部分51amは、閉断面空間51sに面しているため、平面部53aとの接合において、溶接等による接合が制限される。よって、上面部閉断面構成部分51amと、これに重合する上面部閉断面構成部分51amとの対応部分とは互いに接合されていない。以下、重ね合わせ部分Mのうち、後面部51c相当する部分を、「非接合部分Ma」と称する(図4、図6(a)(b)参照)。 In the overlapping portion M, the upper surface portion 51a overlaps the flat portion 53a in surface contact as described above. , 51ar, they are not joined to the plane portion 53a. That is, since the upper surface portion closed cross-section forming portion 51am faces the closed cross-section space 51s, joining with the plane portion 53a by welding or the like is restricted. Therefore, the upper surface portion closed cross-section forming portion 51am and the portion corresponding to the upper surface portion closed cross-section forming portion 51am overlapping therewith are not joined to each other. Hereinafter, of the overlapped portion M, the portion corresponding to the rear surface portion 51c is referred to as a "non-bonded portion Ma" (see FIGS. 4, 6(a) and 6(b)).

また図2~図6(a)に示すように、非接合部分Maの車幅方向内側に相当する部位には、上側クロスメンバ51に補機取付部材60を取付けるに際して利用される作業穴70が貫通形成されている。 As shown in FIGS. 2 to 6(a), a work hole 70 used when attaching the accessory mounting member 60 to the upper cross member 51 is formed in a portion corresponding to the inner side of the non-joint portion Ma in the vehicle width direction. Penetration is formed.

作業穴70は、非接合部分Maの車幅方向内側における、平面部53aと上面部51aとの双方に貫通しており、上側クロスメンバ51の閉断面空間51sと、該閉断面空間51sの外側とを車両上下方向に連通するものである。
当例では、作業穴70は、車幅方向と比して車両前後方向に長い長穴形状に形成されている。
The work hole 70 penetrates both the flat portion 53a and the upper surface portion 51a on the inner side of the non-joint portion Ma in the vehicle width direction, and extends through the closed cross-sectional space 51s of the upper cross member 51 and the outer side of the closed cross-sectional space 51s. and are communicated in the vertical direction of the vehicle.
In this example, the work hole 70 is formed in an elongated hole shape that is longer in the vehicle front-rear direction than in the vehicle width direction.

ここで図4、図5、図6(a)に示すように、補機取付部材60は、上述したように前壁フランジ部65が上側クロスメンバ51の後面部51cに接合されているが、リベット部材71を用いて接合されている。
この点について詳述すると、補機取付部材60の前壁フランジ部65を上側クロスメンバ51の後面部51cに接合するに際して、例えば、溶接により接合することが考えられる。
Here, as shown in FIGS. 4, 5, and 6(a), the accessory mounting member 60 has the front wall flange portion 65 joined to the rear surface portion 51c of the upper cross member 51 as described above. It is joined using a rivet member 71 .
To elaborate on this point, when joining the front wall flange portion 65 of the accessory mounting member 60 to the rear surface portion 51c of the upper cross member 51, for example, welding may be used.

しかしながら、上側クロスメンバ51と補機取付部材60とは共にアルミ二ウム合金製であり、しかも、上側クロスメンバ51は押出し部材であるのに対して補機取付部材60はダイキャスト部材である。このような部材の組み合わせの場合、溶接の相性が一般に低いとされていることから、上側クロスメンバ51と補機取付部材60との接合箇所の強度を確保する点で懸念される。 However, both the upper cross member 51 and the accessory mounting member 60 are made of aluminum alloy, and the upper cross member 51 is an extruded member, while the accessory mounting member 60 is a die cast member. In the case of such a combination of members, welding compatibility is generally considered to be low.

また、補機取付部材60の前壁フランジ部65を上側クロスメンバ51の後面部51cに接合するに際して、例えば、スクリューを用いることも考えられる。 Further, when joining the front wall flange portion 65 of the accessory mounting member 60 to the rear surface portion 51c of the upper cross member 51, for example, a screw may be used.

しかしながら、スクリューを用いて前壁フランジ部65と後面部51cとの取付け箇所に穿孔する際に、前壁フランジ部65や後面部51cの表面に形成された防錆層が取付け箇所周辺において剥離することで、該取付け箇所周辺の防錆性を確保できないことが懸念される。 However, when a screw is used to perforate the mounting location between the front wall flange portion 65 and the rear surface portion 51c, the antirust layer formed on the surfaces of the front wall flange portion 65 and the rear surface portion 51c peels off around the mounting location. As a result, there is a concern that the rust preventiveness around the mounting location cannot be ensured.

このため、本実施形態においては、前壁フランジ部65を後面部51cに対してリベット部材71を用いて取り付ける構成を採用している。
前壁フランジ部65を後面部51cに対してリベット部材71を用いて取り付ける作業の一例について説明する。まず作業者は、一対のリベット部材取付工具(図示省略)のうち、一方を上側クロスメンバ51の後面部51cの側(すなわち閉断面空間51sの側)に、他方を補機取付部材60の前壁フランジ部65(すなわち閉断面空間51sの外側)に配する。
For this reason, in the present embodiment, a configuration is adopted in which the front wall flange portion 65 is attached to the rear surface portion 51c using the rivet member 71. As shown in FIG.
An example of work for attaching the front wall flange portion 65 to the rear surface portion 51c using the rivet members 71 will be described. First, an operator installs one of a pair of rivet member installation tools (not shown) on the side of the rear surface portion 51c of the upper cross member 51 (that is, on the side of the closed cross-sectional space 51s) and the other in front of the accessory attachment member 60. It is arranged on the wall flange portion 65 (that is, outside the closed cross-sectional space 51s).

そして、他方のリベット部材取付工具から前壁フランジ部65から後面部51cに向けてリベット部材71を打ち込みつつ、一方のリベット部材取付工具によって閉断面空間51sの側からリベット部材71を受け止める(図示省略)。 Then, while driving the rivet member 71 from the front wall flange portion 65 toward the rear surface portion 51c from the other rivet member installing tool, the rivet member 71 is received from the side of the closed cross-sectional space 51s by the one rivet member installing tool (not shown). ).

これにより図6(a)および図6(a)のX部拡大部分としての図6(b)に示すように、リベット部材71は、先端が前壁フランジ部65を貫通するが後面部51cを貫通することなく、これら65,51cに埋設した状態で突き刺さる。同時にリベット部材71の先端は、後面部51cの内部において拡径することで、該後面部51cにおける、リベット部材71の周辺部分に係合することができる。 As a result, as shown in FIG. 6(a) and FIG. 6(b), which is an enlarged portion of X portion of FIG. It does not pierce through, but pierces in a state of being embedded in these 65 and 51c. At the same time, the tip of the rivet member 71 can be engaged with the peripheral portion of the rivet member 71 on the rear surface portion 51c by expanding the diameter inside the rear surface portion 51c.

このようにして前壁フランジ部65を後面部51cに対してリベット部材71を用いて取り付けることで、強固な取り付け状態を得ることができつつ、リベット部材71は、取り付け箇所において前壁フランジ部65と後面部51cとの双方を貫通することがないため、取り付け箇所を通じた後面部51cの止水性も確保することができる。 By attaching the front wall flange portion 65 to the rear surface portion 51c using the rivet member 71 in this manner, a strong attachment state can be obtained, and the rivet member 71 is attached to the front wall flange portion 65 at the attachment location. , and the rear surface portion 51c, it is possible to secure the water stoppage of the rear surface portion 51c through the attachment portion.

ところで、上述した非接合部分Maに形成した上記の作業穴70は、前壁フランジ部65を後面部51cに対してリベット部材71を用いて取り付け作業する際に利用する作業穴であって、作業者が、上側クロスメンバ51の上方から作業穴70を介して閉断面空間51sの側から後面部51cに一方のリベット部材取付工具をアクセスするための作業穴である。 By the way, the working hole 70 formed in the non-joining portion Ma is a working hole used when attaching the front wall flange portion 65 to the rear surface portion 51c using the rivet member 71. This is a work hole for a person to access one of the rivet member setting tools from above the upper cross member 51 through the work hole 70 to the rear face portion 51c from the side of the closed cross-sectional space 51s.

換言すると、本実施形態においては、非接合部分Maを含めた重ね合わせ部分Mの車幅方向内端が作業穴70よりも車幅方向内側に位置するように設定したものである。 In other words, in the present embodiment, the inner end in the vehicle width direction of the overlapped portion M including the non-joined portion Ma is set to be positioned inside the working hole 70 in the vehicle width direction.

ここで、連結パネル53は、平面部53aを上側クロスメンバ51の上面部51aの車幅方向外端から作業穴70の位置よりも車幅方向内側に至るまで(当例では、作業穴70の車幅方向内側の周縁に至るまで)車幅方向に長く形成したものである。これにより、平面部53aと上面部51aとの接合面積を車幅方向に沿って大きく確保できるため、互いの接合強度を高めることができる。加えて、重ね合わせ部分Mの作業穴70の周辺部位についても上面部51aに対して平面部53aを重合させることで、上面部51aのみに作業穴70を貫通形成する場合と比して作業穴70の周辺部位の強度についても高めることができる。 Here, the connecting panel 53 extends the flat portion 53a from the vehicle width direction outer end of the upper surface portion 51a of the upper cross member 51 to the vehicle width direction inner side of the work hole 70 (in this example, the work hole 70 is It is formed long in the vehicle width direction up to the inner peripheral edge in the vehicle width direction. As a result, a large bonding area can be secured between the flat portion 53a and the upper surface portion 51a along the vehicle width direction, so that the mutual bonding strength can be increased. In addition, by superimposing the flat portion 53a on the upper surface portion 51a also in the peripheral portion of the working hole 70 in the overlapped portion M, the working hole 70 is formed to penetrate only through the upper surface portion 51a. The strength of the area around 70 can also be increased.

但し、上述したように、重ね合わせ部分Mのうち、非接合部分Maは、平面部53aと上面部閉断面構成部分51amとを重ね合わせただけの部分であって、上面部閉断面構成部分51amの車幅方向外端から作業穴70よりも車幅方向内側に至るまで車幅方向に広範囲に形成した部位である。 However, as described above, of the overlapped portion M, the non-bonded portion Ma is a portion where the flat portion 53a and the upper surface portion closed cross-section constituent portion 51am are overlapped. , which is formed in a wide range in the vehicle width direction from the outer end in the vehicle width direction to the inner side of the working hole 70 in the vehicle width direction.

このため、車両走行時における車体の振動により、非接合部分Maにおいて上面部閉断面構成部分51amと平面部53aとが擦れることで、異音の発生が懸念される。 Therefore, vibration of the vehicle body during running of the vehicle causes friction between the upper closed cross-section forming portion 51am and the flat portion 53a at the non-joint portion Ma, which may cause noise.

これに対して図3、図4、図5、図6(b)に示すように、本実施形態では、非接合部分Maのうち、上面部51aの車幅方向の外端と作業穴70との間に亘って開口(貫通)形成している。 On the other hand, as shown in FIGS. 3, 4, 5, and 6B, in the present embodiment, the outer end of the upper surface portion 51a in the non-joint portion Ma in the vehicle width direction and the working hole 70 are separated from each other. An opening (penetration) is formed between

すなわち、非接合部分Maのうち、上面部51aの車幅方向の外端と作業穴70との間に亘って形成した開口部(72)は、この部分において、平面部53aが上面部51aと重合することを回避する重合回避開口部72として形成することができる。 That is, in the non-joint portion Ma, the opening (72) formed between the outer end of the upper surface portion 51a in the vehicle width direction and the working hole 70 has a flat surface portion 53a and the upper surface portion 51a. It can be formed as a polymerization avoidance opening 72 that avoids polymerization.

換言すると、上面部51aに形成された作業穴70と、上面部51aの車幅方向外端よりも外側の空間とは、重合回避開口部72を介して車幅方向に連通している。 In other words, the work hole 70 formed in the upper surface portion 51a and the space outside the outer end of the upper surface portion 51a in the vehicle width direction communicate with each other in the vehicle width direction via the overlap avoidance opening 72 .

すなわち、上面部51aの左右両サイドには、左右夫々に対応する車幅方向外端から作業穴70に至るまで車幅方向内側へ切欠き状に開口する切欠き状開口部(70,72)が貫通形成されている。 That is, on both left and right sides of the upper surface portion 51a, notch-like openings (70, 72) that open inward in the vehicle width direction from corresponding outer ends in the vehicle width direction to the work hole 70 are provided. is formed through.

一方図4、図6(b)に示すように、非接合部分Maのうち、平面部53aについては車幅方向の外端と作業穴70との間に亘って開口(貫通)形成しておらず、重合回避開口部72を上方から塞ぐように形成されている。
なお、本実施形態においては、非接合部分Maのうち、上面部51aの側のみに重合回避開口部72を貫通形成したが、平面部53aの側のみに重合回避開口部72を貫通形成してもよい。
On the other hand, as shown in FIGS. 4 and 6B, of the non-joint portion Ma, the flat portion 53a is formed with an opening (penetrating) between the outer end in the vehicle width direction and the work hole 70. Instead, it is formed so as to block the polymerization avoidance opening 72 from above.
In the present embodiment, the polymerization avoidance opening 72 is formed through only the upper surface portion 51a side of the non-bonded portion Ma, but the polymerization avoidance opening 72 is formed through only the plane portion 53a side. good too.

但し、例えば、平面部53aの側のみに重合回避開口部72を貫通形成した場合には、平面部53aの重合回避開口部72に相当する部位に上面部51aを底面とする凹部が形成される(図示省略)。これに対して本実施形態のように、非接合部分Maのうち、上面部51aの側のみに重合回避開口部72を貫通形成することにより、平面部53aの重合回避開口部72に相当する部位に凹部が形成されず平面状に形成できるため、水が溜まるおそれがないメリットを有する。 However, for example, when the polymerization avoidance opening 72 is formed through only the plane portion 53a side, a recess having the top surface portion 51a as a bottom surface is formed in a portion corresponding to the polymerization avoidance opening 72 of the plane portion 53a. (illustration omitted). On the other hand, as in the present embodiment, by forming the polymerization avoidance opening 72 through only the upper surface portion 51a side of the non-bonded portion Ma, the portion corresponding to the polymerization avoidance opening 72 of the plane portion 53a is formed. Since it is possible to form a flat surface without forming a concave portion in the inner surface, there is an advantage that there is no possibility that water will be accumulated.

上述した本実施形態の車両の車体構造は、長手方向(延在方向)の直交断面において複数の構成面としての上面部51a、前面部51b、後面部51cを有して画成される閉断面空間51sを内部に有する上側クロスメンバ51(閉断面部材)と、複数の構成面51a,51b,51cのうち、前後各縁のフランジ部51af,51ar(接合フランジ部)を備えた面である上面部51a(被接合面)に接合される連結パネル53(パネル部材)と、複数の上記構成面51a,51b,51cのうち、上面部51aとは異なる面である後面部51c(被取付面)に取り付けられる補機取付部材60(取付部材)と、を備えた車両の車体構造において、連結パネル53は、上面部51aの車幅方向の外端から内側に向けて連続して延びる領域に、該上面部51aに対して前後各縁のフランジ部51af,51arを含めて上方から重合されるとともに、該前後各縁のフランジ部51af,51arにおいて溶接により接合され(図2、図4、図6(a)(b)参照)、連結パネル53と上面部51aとの重ね合わせ部分Mに、後面部51cと補機取付部材60とを取付けるための作業穴70を、上側クロスメンバ51の外側と閉断面空間51sの側とが貫通するように形成し(図2~図5、図6(a)参照)、重ね合わせ部分Mのうち、上面部51aのみに、該上面部51aの車幅方向外端と作業穴70との間を車幅方向に亘って開口させる開口部72が設けられたものである(図3、図5、図6(b)参照)。 The vehicle body structure of the vehicle according to the present embodiment described above is a closed cross section defined by having an upper surface portion 51a, a front surface portion 51b, and a rear surface portion 51c as a plurality of constituent surfaces in an orthogonal cross section in the longitudinal direction (extending direction). An upper cross member 51 (closed section member) having a space 51s inside, and an upper surface provided with flange portions 51af and 51ar (joint flange portions) at the front and rear edges of a plurality of constituent surfaces 51a, 51b, and 51c. A connection panel 53 (panel member) to be joined to the portion 51a (to-be-joined surface), and a rear surface portion 51c (to-be-attached surface) which is a surface different from the upper surface portion 51a among the plurality of constituent surfaces 51a, 51b, and 51c. In the vehicle body structure provided with an accessory mounting member 60 (mounting member) attached to the connecting panel 53, the connection panel 53 is provided in a region continuously extending inward from the outer end of the upper surface portion 51a in the vehicle width direction, The flange portions 51af and 51ar on the front and rear edges are superimposed on the upper surface portion 51a from above, and the flange portions 51af and 51ar on the front and rear edges are joined by welding (FIGS. 2, 4, and 6). (a) and (b)), a work hole 70 for attaching the rear surface portion 51c and the accessory mounting member 60 is formed in the overlapping portion M between the connecting panel 53 and the upper surface portion 51a. 2 to 5 and FIG. 6A), and only the upper surface portion 51a of the overlapped portion M is formed in the vehicle width direction of the upper surface portion 51a. An opening 72 is provided for opening between the outer end and the work hole 70 in the vehicle width direction (see FIGS. 3, 5, and 6B).

上記構成によれば、上側クロスメンバ51に補機取付部材60を取付けるにあたり、上面部51aに作業穴70を設けるが、この作業穴70を連結パネル53と上面部51aとの重ね合わせ部分Mに設けることで、作業穴70の周縁を連結パネル53によって補強することができる。よって、上面部51aに作業穴70を設けることに起因する上側クロスメンバ51の剛性低下を抑制できる。すなわち、上側クロスメンバ51の剛性を確保しつつ後面部51cに補機取付部材60を取付けることができる。 According to the above construction, when attaching the accessory mounting member 60 to the upper cross member 51, the work hole 70 is provided in the upper surface portion 51a. By providing it, the peripheral edge of the working hole 70 can be reinforced by the connecting panel 53 . Therefore, it is possible to suppress a decrease in rigidity of the upper cross member 51 caused by providing the work hole 70 in the upper surface portion 51a. That is, the accessory attachment member 60 can be attached to the rear surface portion 51c while ensuring the rigidity of the upper cross member 51. As shown in FIG.

さらに上記構成によれば、連結パネル53と上面部51aとの重ね合わせ部分Mのうち、前後各縁のフランジ部51af,51arを除く領域(非接合部分Ma)は、互いに接合されずに重なり合った状態となるため、車両走行時に擦れることに起因する異音の発生が懸念される。 Furthermore, according to the above configuration, of the overlapping portion M between the connecting panel 53 and the upper surface portion 51a, the regions (unjoined portions Ma) excluding the flange portions 51af and 51ar at the front and rear edges overlap without being joined to each other. Therefore, there is concern about the generation of abnormal noise due to rubbing during vehicle travel.

これに対して上述したように、上面部51aに、該上面部51aの車幅方向の外端と作業穴70と亘って開口する開口部72を設けることで、非接合部分Maにおける略全体において上面部51aと連結パネル53の平面部53aとの重なり合いを大幅に回避できる。
従って、車両走行時に上面部51aが連結パネル53と擦れることがなく、異音の発生を抑制することができる。
On the other hand, as described above, the upper surface portion 51a is provided with the opening portion 72 that opens across the outer end of the upper surface portion 51a in the vehicle width direction and the work hole 70, so that substantially the entire non-joint portion Ma Overlapping of the upper surface portion 51a and the flat portion 53a of the connection panel 53 can be largely avoided.
Therefore, the upper surface portion 51a does not rub against the connecting panel 53 while the vehicle is running, and noise can be suppressed.

この発明の態様として、上側クロスメンバ51が押出し成形により形成された押出し部材である(図6(a)(b)参照)。 As a mode of the present invention, the upper cross member 51 is an extruded member formed by extrusion (see FIGS. 6(a) and 6(b)).

上記構成によれば、上側クロスメンバ51は、上面部51aの前後各縁にフランジ部51af,51arを備えた、フランジ付の筒状に構成されているが、このような形状であっても押出し成形により形成することで、例えば、プレス成形により形成された複数のパネル部材を組み合わせて構成する場合と比して高剛性に構成することができる。 According to the above configuration, the upper cross member 51 is configured in a tubular shape with flanges having flange portions 51af and 51ar at the front and rear edges of the upper surface portion 51a. By forming by molding, for example, it is possible to configure with high rigidity as compared with the case of combining a plurality of panel members formed by press molding.

さらに、上側クロスメンバ51は、内部に閉断面空間51sを有する車体剛性部材であるため、該上側クロスメンバ51の周辺に配設される補機73(車両部品)を、上側クロスメンバ51における、例えば、後面部51cに補機取付部材60を介して取り付けることで、これら補機73を上側クロスメンバ51によってしっかりと支持することができる。 Furthermore, since the upper cross member 51 is a vehicle body rigid member having a closed cross-sectional space 51s inside, the auxiliary machine 73 (vehicle part) disposed around the upper cross member 51 is For example, these accessories 73 can be firmly supported by the upper cross member 51 by attaching them to the rear surface portion 51 c via the accessory attachment member 60 .

この発明の態様として、連結パネル53は、車幅方向の両側に離間して配設された車体構成部材としてのリヤサイドハウジング10と上側クロスメンバ51とを連結するブラケットとして構成され、前後各縁のフランジ部51af,51arと連結パネル53とは、上面部51aの車幅方向における少なくとも、車幅方向外端と作業穴70よりも車幅方向内側の位置との間に亘って互いに接合されたものである(図4参照)。 As an aspect of the present invention, the connection panel 53 is configured as a bracket that connects the rear side housing 10 and the upper cross member 51, which are spaced apart on both sides in the vehicle width direction. The flange portions 51af and 51ar and the connection panel 53 are joined to each other over at least the outer end of the upper surface portion 51a in the vehicle width direction and a position on the inner side of the work hole 70 in the vehicle width direction. (see FIG. 4).

上記構成によれば、連結パネル53は、上側クロスメンバ51とリヤサイドハウジング10とを連結するブラケットおよび、これら51,10の連結部分の補強部材として、上面部51aの車幅方向における、外端から少なくとも作業穴70の周縁に至るまで車幅方向の広範囲に亘って接合することができる。 According to the above configuration, the connection panel 53 functions as a bracket that connects the upper cross member 51 and the rear side housing 10 and as a reinforcing member for the connecting portion of the upper cross member 51 and the rear side housing 10. It is possible to bond over a wide range in the vehicle width direction at least up to the periphery of the work hole 70 .

これにより、車体構成部材と上側クロスメンバ51とを、ブラケットとしての連結パネル53を介して強固に接合できる。 As a result, the vehicle body component and the upper cross member 51 can be firmly joined via the connection panel 53 as a bracket.

この発明の態様として、車体構成部材は、リヤサスペンションを支持するリヤサイドハウジング10で構成されたものである(図1~図5参照)。 As an aspect of the present invention, the vehicle body component is composed of a rear side housing 10 that supports the rear suspension (see FIGS. 1 to 5).

上記構成によれば、車体構成部材を、サスペンションを支持するリヤサイドハウジング10で構成したものである。ここで、連結パネル53は上述したように、上側クロスメンバ51とリヤサイドハウジング10とを連結するブラケットおよび、これら連結部分の補強部材として、上面部51aの車幅方向の外端から少なくとも作業穴70の周縁に至るまで車幅方向において広範囲に亘って接合されている。 According to the above configuration, the vehicle body component is composed of the rear side housing 10 that supports the suspension. Here, as described above, the connection panel 53 serves as a bracket that connects the upper cross member 51 and the rear side housing 10 and as a reinforcing member for the connection between the upper cross member 51 and at least the work hole 70 from the outer end of the upper surface portion 51a in the vehicle width direction. It is joined over a wide range in the vehicle width direction up to the peripheral edge of the.

よって、車両走行時に車輪からリヤサスペンションに加わる荷重を、連結パネル53を介してリヤサイドハウジング10から上側クロスメンバ51へと効率よく伝達することができ、結果として、リヤサスペンションの支持剛性を確保することができる。 Therefore, the load applied from the wheels to the rear suspension while the vehicle is running can be efficiently transmitted from the rear side housing 10 to the upper cross member 51 via the connecting panel 53, and as a result, the support rigidity of the rear suspension can be ensured. can be done.

この発明の態様として、上側クロスメンバ51と補機取付部材60とは、共にアルミニウム又はアルミニウム合金で形成されたものであるとともに、上側クロスメンバ51の後面部51cにおける補機取付部材60を取付ける取り付け箇所において、後面部51cと補機取付部材60の前壁フランジ部65とが、夫々の背反側からの押圧によって押圧接合部材としてのリベット部材71を用いて接合されたものである(図4、図6(a)参照)。 As an aspect of the present invention, the upper cross member 51 and the accessory attachment member 60 are both made of aluminum or an aluminum alloy, and the attachment for attaching the accessory attachment member 60 to the rear surface portion 51c of the upper cross member 51 is performed. 4, the rear surface portion 51c and the front wall flange portion 65 of the accessory mounting member 60 are joined together by pressing from opposite sides thereof using a rivet member 71 as a pressure joining member (FIGS. 4 and 5). See FIG. 6(a)).

上記構成によれば、後面部51cと前壁フランジ部65との取り付け箇所において、これら51c,65に跨るように埋設されたリベット部材71は先端が拡径するように圧潰した状態で埋設するため、後面部51cと前壁フランジ部65とを強固に接合できる。さらに後面部51cと前壁フランジ部65とを、例えば、スクリューやボルト等の締結部材を用いて接合する場合のように取り付け箇所に締結用の貫通孔が形成されることがないため、後面部51cと前壁フランジ部65との取り付け箇所を通じて上側クロスメンバ51の閉断面空間51sが被水することを回避することができる。 According to the above configuration, the rivet member 71 embedded so as to straddle the rear surface portion 51c and the front wall flange portion 65 is embedded in a crushed state so that the tip thereof expands in diameter. , the rear surface portion 51c and the front wall flange portion 65 can be firmly joined. Furthermore, unlike the case where the rear surface portion 51c and the front wall flange portion 65 are joined using a fastening member such as a screw or bolt, there is no need to form a through-hole for fastening at the attachment location. It is possible to prevent the closed cross-sectional space 51s of the upper cross member 51 from being exposed to water through the attachment point between the front wall flange portion 65 and the upper cross member 51c.

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く様々な実施形態で形成することができる。 The present invention is not limited to only the configurations of the examples described above, but can be formed in various embodiments.

10…リヤサイドハウジング(車体構成部材)
51…上側クロスメンバ(閉断面部材)
51a…上面部(構成面、被接合面)
51a…前面部(構成面)
51c…後面部(構成面、被取付面)
51s…閉断面空間
51af,51ar…前後各縁のフランジ部(接合フランジ部)
53…連結パネル(パネル部材)
60…補機取付部材(取付部材)
70…作業穴
72…開口部
71…リベット部材
M…重ね合わせ部分
10... Rear side housing (body component)
51 ... upper cross member (closed section member)
51a... Upper surface portion (construction surface, surface to be joined)
51a... Front part (construction surface)
51c... Rear surface portion (construction surface, mounting surface)
51s: Closed cross-sectional spaces 51af, 51ar: Flange portions (joint flange portions) at front and rear edges
53 ... Connection panel (panel member)
60... Accessory mounting member (mounting member)
70... Working hole 72... Opening 71... Rivet member M... Overlapping portion

Claims (5)

延在方向の直交断面において複数の構成面によって画成される閉断面空間を内部に有する閉断面部材と、
複数の上記構成面のうち、接合フランジ部を備えた面である被接合面に、接合されるパネル部材と、
複数の上記構成面のうち、上記被接合面とは異なる面である被取付面に取り付けられる取付部材と、を備えた車両の車体構造において、
上記パネル部材は、上記被接合面の延在方向の一端側から他端に向けて連続して延びる領域であるとともに上記接合フランジを含めた領域に、上記閉断面空間の外側から重合されるとともに、該接合フランジにおいて接合され、
上記パネル部材と上記被接合面との重ね合わせ部分に、上記被取付面と上記取付部材とを取付けるための作業穴を貫通形成し、
上記重ね合わせ部分のうち、上記被接合面のみに、該被接合面の上記一端側と上記作業穴の間に亘って開口する開口部が設けられた
車両の車体構造。
a closed cross-sectional member having therein a closed cross-sectional space defined by a plurality of constituent surfaces in an orthogonal cross section in the extending direction;
A panel member to be joined to a surface to be joined, which is a surface having a joining flange portion among the plurality of constituent surfaces;
A vehicle body structure for a vehicle comprising: a mounting member attached to a mounting surface that is different from the bonding surface among the plurality of constituent surfaces,
The panel member is superimposed from the outside of the closed cross-sectional space on a region that extends continuously from one end side toward the other end in the extending direction of the surfaces to be joined and includes the joining flange portion . and joined at the joint flange ,
a working hole for attaching the mounting surface and the mounting member is formed through the overlapped portion of the panel member and the bonding surface;
A vehicle body structure of a vehicle, wherein an opening extending between the one end side of the joint surface and the work hole is provided only in the joint surface of the overlapped portion.
上記閉断面部材が押出し成形により形成された押出し部材である
請求項1に記載の車両の車体構造。
2. The vehicle body structure according to claim 1, wherein said closed cross-section member is an extruded member formed by extrusion molding.
上記閉断面部材は、車幅方向の両側に離間して配設された車体構成部材を連結するクロスメンバとして構成され、
上記パネル部材は、上記車体構成部材と上記クロスメンバとを連結するブラケットとして構成され、
上記接合フランジ部と上記パネル部材とは、上記被接合面の車幅方向における少なくとも、外端側と上記作業穴よりも車幅方向内側とに亘って互いに接合された
請求項1又は2に記載の車両の車体構造。
The closed cross-section member is configured as a cross member that connects vehicle body structural members spaced apart on both sides in the vehicle width direction,
The panel member is configured as a bracket that connects the vehicle body component and the cross member,
3. The joint flange portion and the panel member according to claim 1, wherein the joint flange portion and the panel member are jointed to each other over at least an outer end side of the joint surface in the vehicle width direction and a vehicle width direction inner side of the work hole. vehicle body structure.
上記車体構成部材は、リヤサスペンションを支持するリヤサイドハウジングで構成した
請求項3に記載の車両の車体構造。
4. The vehicle body structure according to claim 3, wherein said vehicle body constituent member comprises a rear side housing for supporting a rear suspension.
上記閉断面部と上記取付け部材とは、共にアルミニウム又はアルミニウム合金で形成されたものであるとともに、上記被取付面に上記取付部材がリベット部材により押圧接合された
請求項1乃至4のいずれか1項に記載の車両の車体構造。
5. The closed section member and the mounting member are both made of aluminum or an aluminum alloy, and the mounting member is press-joined to the mounting surface by a rivet member. 2. The vehicle body structure of the vehicle according to item 1.
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JP2005306323A (en) 2004-04-26 2005-11-04 Nissan Motor Co Ltd Vehicle body front structure
JP2010234955A (en) 2009-03-31 2010-10-21 Honda Motor Co Ltd Vehicle body rear part structure
DE102012023863A1 (en) 2012-12-06 2013-07-25 Daimler Ag Rear body structure for passenger car body, has safety cell region, which is formed from fiber-reinforced plastic and has main base structure and reinforcing structure, where absorption region is connected to safety cell region

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Publication number Priority date Publication date Assignee Title
US5580121A (en) * 1995-12-19 1996-12-03 Chrysler Corporation Vehicle body rear support arrangement

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Publication number Priority date Publication date Assignee Title
JP2000085629A (en) 1998-09-09 2000-03-28 Daimlerchrysler Ag Rear structure of monocock type automobile body and manufacture theeof
JP2002362420A (en) 2001-06-08 2002-12-18 Fuji Heavy Ind Ltd Car body rear part structure of automobile
JP2005306323A (en) 2004-04-26 2005-11-04 Nissan Motor Co Ltd Vehicle body front structure
JP2010234955A (en) 2009-03-31 2010-10-21 Honda Motor Co Ltd Vehicle body rear part structure
DE102012023863A1 (en) 2012-12-06 2013-07-25 Daimler Ag Rear body structure for passenger car body, has safety cell region, which is formed from fiber-reinforced plastic and has main base structure and reinforcing structure, where absorption region is connected to safety cell region

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