JP2009101949A - Vehicle body structure - Google Patents

Vehicle body structure Download PDF

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JP2009101949A
JP2009101949A JP2007277411A JP2007277411A JP2009101949A JP 2009101949 A JP2009101949 A JP 2009101949A JP 2007277411 A JP2007277411 A JP 2007277411A JP 2007277411 A JP2007277411 A JP 2007277411A JP 2009101949 A JP2009101949 A JP 2009101949A
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cross member
vehicle body
floor
floor frames
vertical walls
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JP5078546B2 (en
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Yoshiaki Oi
良章 大井
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To enhance the rigidity of an intersection portion of a cross member and floor frames while suppressing increase in the weight of a vehicle body. <P>SOLUTION: The vehicle body has the cross member 24 and the front and rear floor frames 26F, 26R. The floor frames 26F, 26R comprise beads protruded from a floor panel 25 and narrow and long in the vehicle body longitudinal direction, and are arranged in series on both front and rear sides sandwiching the cross member 24. Terminal parts 44F, 44R of the respective floor frames 26F, 26R are positioned in the vicinity of the cross member 24. The floor frames 26F, 26R and cross member 24 comprise right and left erected longitudinal walls and top plates closing between upper ends of the right and left longitudinal walls. In the respective terminal parts 44F, 44R and cross member 24, the longitudinal walls and the top plates are jointed to each other by jointing members 50F, 50R having a T-shape in plane view. The right and left longitudinal walls of the cross member 24 are connected to each other by two longitudinal ribs 61, 61 arranged in the longitudinal direction. The longitudinal ribs 61, 61 are arranged so as to approximately individually continue with respect to the right and left longitudinal walls of the floor frames 26F, 26R. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は乗用車等の車両における車体の構造に関する。   The present invention relates to a structure of a vehicle body in a vehicle such as a passenger car.

一般に車体は、フロアパネル等の平坦なパネルの剛性を高めるために、各種の補強が施されている（例えば、特許文献１参照。）。
特開平７−２９１１５０号公報 In general, various reinforcements are applied to a vehicle body in order to increase the rigidity of a flat panel such as a floor panel (see, for example, Patent Document 1).
JP 7-291150 A

特許文献１で知られている車体構造は、フロアパネルの上面に、車体前後方向に細長いビード（縦ビード）と車幅方向に細長いビード（横ビード）とを、互いに交差するように形成し、さらに、横ビードの上に車幅方向に細長いクロスメンバを重ねて接合することによって、フロアパネルの剛性を高めたというものである。   The vehicle body structure known from Patent Document 1 is formed on the upper surface of the floor panel so that a bead elongated in the vehicle longitudinal direction (vertical bead) and a bead elongated in the vehicle width direction (lateral bead) intersect each other, Furthermore, the rigidity of the floor panel is increased by overlapping and joining cross members elongated in the vehicle width direction on the horizontal beads.

しかし、特許文献１で知られている車体構造は、縦ビードと横ビード（フロアフレームに相当する。）とが交差する部分は単なる空間にすぎない。つまり、縦ビードの先端は横ビードの縦壁を貫通している。このため、ビード同士が交差する部分におけるフロアパネルの剛性（特に、車体上下方向の荷重に対する剛性）を、縦ビードと横ビードによって高めるには、改良の余地がある。   However, in the vehicle body structure known from Patent Document 1, a portion where a vertical bead and a horizontal bead (corresponding to a floor frame) intersect is merely a space. That is, the tip of the vertical bead penetrates the vertical wall of the horizontal bead. For this reason, there is room for improvement in order to increase the rigidity of the floor panel (particularly, the rigidity against the load in the vertical direction of the vehicle body) by the vertical and horizontal beads at the portion where the beads intersect.

また、特許文献１で知られている車体構造は、横ビードの上に車幅方向に細長いクロスメンバを重ねて、縦ビードに接合している。しかし、このような構成によって、ビード同士が交差する部分におけるフロアパネルの剛性（特に、車体上下方向の荷重に対する剛性）を高めるには限界がある。
このようなことから、別個の部材を追加して交差部分の剛性を高めることも考えられるが、単に部材を追加するのでは、車体の重量が増す要因となる。 In the vehicle body structure known from Patent Document 1, a cross member elongated in the vehicle width direction is stacked on a horizontal bead and joined to the vertical bead. However, with such a configuration, there is a limit to increasing the rigidity of the floor panel (particularly, the rigidity against the load in the vertical direction of the vehicle body) at the portion where the beads intersect.
For this reason, it is conceivable to add a separate member to increase the rigidity of the intersection. However, simply adding a member causes an increase in the weight of the vehicle body.

本発明は、車体の重量増加を抑制しつつ、クロスメンバとフロアフレームとの交差部分の剛性を高めることができる技術を、提供することを課題とする。   It is an object of the present invention to provide a technique that can increase the rigidity of the intersection of the cross member and the floor frame while suppressing an increase in the weight of the vehicle body.

請求項１に係る発明は、フロアパネルと、このフロアパネルの一方の面に沿って設けられたクロスメンバ及び複数のフロアフレームとを有している車体構造であって、
前記クロスメンバは、車幅方向へ延びており、
前記複数のフロアフレームは、前記フロアパネルから膨出した、車体前後方向に細長いビードから成り、前記クロスメンバを挟んで前後両側に直列に配列され、
前記複数のフロアフレームにおける終端部が、前記クロスメンバの近傍に位置することにより、前記各終端部は前記クロスメンバに対して平面視でＴ字状に配置されており、
前記複数のフロアフレーム及び前記クロスメンバは、それぞれ前記フロアパネルの前記一方の面に対して起立した左右の縦壁と、これら左右の縦壁の上端間を塞いだ天板とから成る、略逆Ｕ字状断面に形成されており、
前記各終端部と前記クロスメンバとは、それぞれ縦壁同士と天板同士が平面視Ｔ字状の結合部材によって接合され、
前記クロスメンバにおける左右の縦壁同士は、前記クロスメンバの長手方向に配列された２つの縦リブによって、互いに繋がれており、
この２つの縦リブは、前記複数のフロアフレームにおける左右の縦壁に対して、概ね個別に連続するように配置されていることを特徴とする。 The invention according to claim 1 is a vehicle body structure having a floor panel, a cross member provided along one surface of the floor panel, and a plurality of floor frames,
The cross member extends in the vehicle width direction,
The plurality of floor frames are swelled from the floor panel, and are composed of beads that are elongated in the front-rear direction of the vehicle body, arranged in series on both front and rear sides with the cross member interposed therebetween,
Since the end portions of the plurality of floor frames are positioned in the vicinity of the cross member, the end portions are arranged in a T shape in a plan view with respect to the cross member,
Each of the plurality of floor frames and the cross member is composed of left and right vertical walls that stand up with respect to the one surface of the floor panel, and a top plate that blocks between the upper ends of the left and right vertical walls. Formed in a U-shaped cross section,
Each of the end portions and the cross member are joined to each other by a connecting member in which the vertical walls and the top plates are T-shaped in plan view,
The left and right vertical walls of the cross member are connected to each other by two vertical ribs arranged in the longitudinal direction of the cross member,
The two vertical ribs are arranged so as to be generally individually continuous with respect to the left and right vertical walls of the plurality of floor frames.

請求項１に係る発明では、車体前後方向に細長いビードから成る複数のフロアフレームを、クロスメンバを挟んで前後両側に直列に配列し、複数のフロアフレームにおける各終端部を、クロスメンバの近傍に位置させ、各終端部とクロスメンバとにおける、それぞれ縦壁同士と天板同士を、平面視Ｔ字状の結合部材によって接合したものである。当然のことながら、結合部材は、終端部の縦壁とクロスメンバの縦壁とを接合する部分（例えば、縦壁）と、終端部の天板とクロスメンバの天板とを接合する部分（例えば、天板）とを有することになる。このような構成によって、クロスメンバとフロアフレームとの交差部分の剛性（車体上下方向の荷重に対する剛性を含む）を、結合部材によって高めることができる。   In the invention according to claim 1, a plurality of floor frames made of beads elongated in the front-rear direction of the vehicle body are arranged in series on both front and rear sides with the cross member interposed therebetween, and each end portion of the plurality of floor frames is arranged in the vicinity of the cross member. The vertical walls and the top plates of the end portions and the cross member are joined by a T-shaped coupling member in plan view. As a matter of course, the coupling member includes a portion that joins the vertical wall of the end portion and the vertical wall of the cross member (for example, a vertical wall), and a portion that joins the top plate of the end portion and the top plate of the cross member ( For example, it has a top plate. With such a configuration, the rigidity of the crossing portion between the cross member and the floor frame (including the rigidity against the load in the vertical direction of the vehicle body) can be increased by the coupling member.

さらには、クロスメンバにおける左右の縦壁同士を、２つの縦リブによって繋ぐとともに、これらの縦リブを、複数のフロアフレームにおける左右の縦壁に対して、概ね個別に連続するように配置したものである。このため、複数のフロアフレームの縦壁と、結合部材の縦壁と、縦リブとは、概ね直線上に連続して延びる。このため、クロスメンバとフロアフレームとの交差部分の剛性（車体上下方向の荷重に対する剛性を含む）を、結合部材によって、より一層高めることができる。   Furthermore, the left and right vertical walls of the cross member are connected by two vertical ribs, and these vertical ribs are arranged so as to be generally continuous with the left and right vertical walls of a plurality of floor frames. It is. For this reason, the vertical walls of the plurality of floor frames, the vertical walls of the coupling members, and the vertical ribs extend substantially continuously on a straight line. For this reason, the rigidity (including the rigidity against the load in the vertical direction of the vehicle body) of the intersection between the cross member and the floor frame can be further increased by the coupling member.

しかも、車体前後方向に細長いビードから成る複数のフロアフレームを、クロスメンバを挟んで前後両側に直列に配列し、フロアフレームにおける終端部とクロスメンバとを、平面視Ｔ字状の結合部材によって接合し、クロスメンバにおける左右の縦壁同士を、２つの縦リブによって繋いだだけの構成であるから、車体の重量はほとんど増加しない。つまり、車体の重量増加を抑制しつつ、剛性を高めることができる。   In addition, a plurality of floor frames formed of beads elongated in the longitudinal direction of the vehicle body are arranged in series on both front and rear sides with the cross member interposed therebetween, and the end portion of the floor frame and the cross member are joined by a T-shaped coupling member in plan view. However, since the left and right vertical walls of the cross member are simply connected by two vertical ribs, the weight of the vehicle body hardly increases. That is, the rigidity can be increased while suppressing an increase in the weight of the vehicle body.

本発明を実施するための最良の形態を添付図に基づいて以下に説明する。なお、「前」、「後」、「左」、「右」、「上」、「下」は運転者から見た方向に従う。
図１は本発明に係る車室周りの車体の斜視図である。図２は図１に示すフロアフレームとクロスメンバと結合部材の結合部分の斜視図である。図３は図２の３−３線断面図である。図４は図２に示すフロアフレームとクロスメンバと結合部材の一部を破断した平面図である。図５は図２に示すフロアフレームとクロスメンバと結合部材の分解図である。 The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. Note that “front”, “rear”, “left”, “right”, “upper”, and “lower” follow the direction seen from the driver.
FIG. 1 is a perspective view of a vehicle body around a passenger compartment according to the present invention. FIG. 2 is a perspective view of a connecting portion of the floor frame, the cross member, and the connecting member shown in FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 4 is a plan view in which a part of the floor frame, the cross member, and the coupling member shown in FIG. 2 is broken. FIG. 5 is an exploded view of the floor frame, the cross member, and the coupling member shown in FIG.

図１に示すように、自動車等の車両１０における車体１１（すなわち、車体フレーム１１）はモノコックボディから成る。車体１１における車室部分は、車体前後方向に延びる左右のサイドシル２１，２１と、車幅中心（車幅中央）で車体前後方向に延びるフロアトンネル２２と、左右のサイドシル２１，２１とフロアトンネル２２との間に掛け渡されるように車幅方向へ延びた前後２列のクロスメンバ２３，２４と、左右のサイドシル２１，２１とフロアトンネル２２との間に張られたフロントフロアパネル２５，２５と、フロアトンネル２２の左右両側方で車体前後方向に延びる複数のフロアフレーム２６Ｆ・・・，２６Ｒ・・・とからなる。   As shown in FIG. 1, a vehicle body 11 (that is, a vehicle body frame 11) in a vehicle 10 such as an automobile is formed of a monocoque body. The vehicle compartment portion of the vehicle body 11 includes left and right side sills 21 and 21 extending in the vehicle longitudinal direction, a floor tunnel 22 extending in the vehicle longitudinal direction at the vehicle width center (vehicle width center), and the left and right side sills 21 and 21 and the floor tunnel 22. Two front and rear rows of cross members 23 and 24 extending in the vehicle width direction so as to be bridged between the front and rear side sills 21 and 21 and the front floor panels 25 and 25 stretched between the floor tunnel 22. The floor tunnel 22 includes a plurality of floor frames 26F,..., 26R,.

後部のクロスメンバ２４は、鋼板の折り曲げ成形品である。図２〜図５に示すように、後部のクロスメンバ２４は、略逆Ｕ字状断面体（略下向きコ字状断面体）の両側から側方にフランジ３４，３５が延びた構成であり、フロントフロアパネル２５の上面２５ａに載置されてフランジ３４，３５が接合される。つまり、クロスメンバ２４は、フロントフロアパネル２５の上面２５ａ（一方の面２５ａ）に対して起立した左右一対の縦壁３１，３２と、左右の縦壁３１，３２の上端間を塞いだ天板３３と、左右の縦壁３１，３２の下端から側方へ延びた左右のフランジ３４，３５とからなる。   The rear cross member 24 is a bent product of a steel plate. As shown in FIGS. 2 to 5, the rear cross member 24 has a configuration in which flanges 34 and 35 extend laterally from both sides of a substantially inverted U-shaped cross section (substantially downward U-shaped cross section), The flanges 34 and 35 are joined by being placed on the upper surface 25a of the front floor panel 25. That is, the cross member 24 has a pair of left and right vertical walls 31, 32 erected with respect to the upper surface 25 a (one surface 25 a) of the front floor panel 25, and a top plate that blocks between the upper ends of the left and right vertical walls 31, 32. 33 and left and right flanges 34, 35 extending laterally from the lower ends of the left and right vertical walls 31, 32.

上述のように、クロスメンバ２４が車幅方向へ延びるので、左側の縦壁３１は車体前側を向き、右側の縦壁３２は車体後側を向くことになる。説明の理解を容易にするために、以下、左の縦壁３１のことを「前側の縦壁３１」と言い換え、右の縦壁３２のことを「後側の縦壁３２」と言い換えることにする。   As described above, since the cross member 24 extends in the vehicle width direction, the left vertical wall 31 faces the front side of the vehicle body, and the right vertical wall 32 faces the rear side of the vehicle body. In order to facilitate the understanding of the description, the left vertical wall 31 is hereinafter referred to as “front vertical wall 31”, and the right vertical wall 32 is referred to as “rear vertical wall 32”. To do.

図２〜図５に示すように、フロントフロアパネル２５は鋼板から成る。フロアフレーム２６Ｆ，２６Ｒは、フロントフロアパネル２５の上面２５ａから上方へ膨出して車体前後方向へ延びた細長いビードによって構成されている。このビード（bead）は、上面２５ａから上方へ膨出するように、フロントフロアパネル２５に型押し等によって形成されたものであり、フロントフロアパネル２５の下面側から見ると溝状の構成である。   As shown in FIGS. 2-5, the front floor panel 25 consists of a steel plate. The floor frames 26F and 26R are configured by elongated beads that bulge upward from the upper surface 25a of the front floor panel 25 and extend in the vehicle body front-rear direction. This bead is formed by embossing or the like on the front floor panel 25 so as to bulge upward from the upper surface 25a, and has a groove-like configuration when viewed from the lower surface side of the front floor panel 25. .

詳しく説明すると、フロアフレーム２６Ｆ，２６Ｒは、略逆Ｕ字状断面体（略下向きコ字状断面体）に形成されており、フロントフロアパネル２５の上面２５ａに対して起立した左右一対の縦壁４１，４２と、左右の縦壁４１，４２の上端間を塞いだ天板４３とから成る。   More specifically, the floor frames 26F and 26R are formed in a substantially inverted U-shaped cross-section (substantially downward U-shaped cross-section), and a pair of left and right vertical walls standing on the upper surface 25a of the front floor panel 25. 41 and 42 and a top plate 43 that blocks the upper ends of the left and right vertical walls 41 and 42.

フロアトンネル２２（図１参照）の左側に設けられた複数のフロアフレーム２６Ｆ，２６Ｒは、後部のクロスメンバ２４を挟んで前後両側に直列に配列されている。フロアトンネル２２の右側に設けられた複数のフロアフレーム２６Ｆ，２６Ｒも同様である。
以下、後部のクロスメンバ２４に対して、車体前側に配列されたフロアフレーム２６Ｆのことを「前部フロアフレーム２６Ｆ」と言い、車体後側に配列されたフロアフレーム２６Ｒのことを「後部フロアフレーム２６Ｒ」と言うことにする。 A plurality of floor frames 26F and 26R provided on the left side of the floor tunnel 22 (see FIG. 1) are arranged in series on both the front and rear sides with the cross member 24 at the rear portion interposed therebetween. The same applies to the plurality of floor frames 26F and 26R provided on the right side of the floor tunnel 22.
Hereinafter, the floor frame 26F arranged on the front side of the vehicle body with respect to the rear cross member 24 is referred to as “front floor frame 26F”, and the floor frame 26R arranged on the rear side of the vehicle body is referred to as “rear floor frame”. 26R ".

クロスメンバ２４における前側の縦壁３１には、前部フロアフレーム２６Ｆの終端部４４Ｆが臨んでいる。クロスメンバ２４における後側の縦壁３２には、後部フロアフレーム２６Ｒの終端部４４Ｒが臨んでいる。ここで、終端部４４Ｆ，４４Ｒとは、ビードの端の部分のことである。前後２つ（複数）のフロアフレーム２６Ｆ，２６Ｒにおける終端部４４Ｆ，４４Ｒは、クロスメンバ２４の近傍に位置している。この結果、平面視において、前の終端部４４Ｆと後の終端部４４Ｒはクロスメンバ２４に対し、それぞれＴ字状に配置される。   A front end wall 44F of the front floor frame 26F faces the front vertical wall 31 of the cross member 24. A rear end wall 44R of the rear floor frame 26R faces the rear vertical wall 32 of the cross member 24. Here, the end portions 44F and 44R are bead end portions. The end portions 44F and 44R in the front and rear two (plural) floor frames 26F and 26R are located in the vicinity of the cross member 24. As a result, the front end portion 44F and the rear end portion 44R are each arranged in a T shape with respect to the cross member 24 in plan view.

図３及び図５に示すように、フロントフロアパネル２５において、前の終端部４４Ｆの先端４５Ｆから後の終端部４４Ｒの先端４５Ｒまでの間は、フロアフレーム２６Ｆ，２６Ｒが無いので、平坦である。つまり、前後の先端４５Ｆ，４５Ｒは、フロントフロアパネル２５の上面２５ａと同じ高さである。前後の先端４５Ｆ，４５Ｒ間の離間距離Ｌ１は、クロスメンバ２４における一対のフランジ３４，３５の外幅Ｌ２よりも若干大きい。前の終端部４４Ｆは、天板４３から先端４５Ｆへ向かって傾斜した傾斜天板４６が連なっている。後の終端部４４Ｒも同様である。   As shown in FIGS. 3 and 5, the front floor panel 25 is flat between the front end 45F of the front end portion 44F and the front end 45R of the rear end portion 44R because there are no floor frames 26F and 26R. . That is, the front and rear tips 45F and 45R are the same height as the upper surface 25a of the front floor panel 25. The separation distance L1 between the front and rear tips 45F and 45R is slightly larger than the outer width L2 of the pair of flanges 34 and 35 in the cross member 24. The front end portion 44F is connected to an inclined top plate 46 that is inclined from the top plate 43 toward the tip 45F. The same applies to the rear end portion 44R.

次に、図２〜図５に基づいて、後部のクロスメンバ２４とフロアフレーム２６Ｆ，２６Ｒの結合構造を説明する。クロスメンバ２４と前の終端部４４Ｆとは、それぞれ縦壁３１，４１，４２同士と天板３３，４３同士が前の結合部材５０Ｆによって接合されている。クロスメンバ２４と後の終端部４４Ｒとは、それぞれ縦壁３２，４１，４２同士と天板３３，４３同士が後の結合部材５０Ｒによって接合されている。以下、結合構造を詳細に説明する。   Next, based on FIGS. 2-5, the coupling structure of the rear cross member 24 and the floor frames 26F and 26R will be described. In the cross member 24 and the front end portion 44F, the vertical walls 31, 41, 42 and the top plates 33, 43 are joined together by the front coupling member 50F. In the cross member 24 and the rear end portion 44R, the vertical walls 32, 41, 42 and the top plates 33, 43 are joined by a rear coupling member 50R. Hereinafter, the coupling structure will be described in detail.

前後の結合部材５０Ｆ，５０Ｒは、平面視でＴ字状に形成された鉄鋼製品であり、例えば鋼板の折り曲げ成形品や鋳造品から成る。
前の結合部材５０Ｆは、平面視でＴ字状の天板５１と、天板５１のうち「Ｔ字の脚」の縁からフロントフロアパネル２５へ向かって延びる左右一対の縦壁５２，５３とからなる、一体成形品である。天板５１は、クロスメンバ２４の天板３３と前の終端部４４Ｆにおける天板４３とを接合する、水平な平板の部分である。左右の縦壁５２，５３は、終端部４４Ｆの縦壁４１，４２とクロスメンバ２４における前側の縦壁３１とを接合する部分であり、平面視Ｌ字状に形成されている。 The front and rear coupling members 50F and 50R are steel products formed in a T shape in a plan view, and are made of, for example, a bent product or a cast product of a steel plate.
The front coupling member 50F includes a T-shaped top plate 51 in plan view, and a pair of left and right vertical walls 52, 53 extending from the edge of the “T-shaped leg” of the top plate 51 toward the front floor panel 25. It is a one-piece molded product. The top plate 51 is a horizontal flat plate portion that joins the top plate 33 of the cross member 24 and the top plate 43 at the front end portion 44F. The left and right vertical walls 52 and 53 are portions that join the vertical walls 41 and 42 of the terminal end portion 44F and the front vertical wall 31 of the cross member 24, and are formed in an L shape in plan view.

後の結合部材５０Ｒは、前の結合部材５０Ｆと実質的に同じ構成であり、前後逆向きにして用いられる。つまり、後の結合部材５０Ｒにおける天板５１は、クロスメンバ２４の天板３３と後の終端部４４Ｒにおける天板４３とを接合する部分である。後の結合部材５０Ｒにおける左右の縦壁５２，５３は、クロスメンバ２４における後側の縦壁３２と終端部４４Ｒにおける縦壁４１，４２とを接合する部分である。   The rear coupling member 50R has substantially the same configuration as the front coupling member 50F, and is used in the front-rear direction. That is, the top plate 51 in the rear coupling member 50R is a portion that joins the top plate 33 of the cross member 24 and the top plate 43 in the rear end portion 44R. The left and right vertical walls 52 and 53 in the rear coupling member 50R are portions for joining the rear vertical wall 32 in the cross member 24 and the vertical walls 41 and 42 in the terminal portion 44R.

前の結合部材５０Ｆによる接合手順は次の通りである。
先ず、平面視Ｔ字状に配置されたクロスメンバ２４と前の終端部４４Ｆに対して、前の結合部材５０Ｆを上から被せる。
そして、クロスメンバ２４の天板３３に結合部材５０Ｆの天板５１を接合し、終端部４４Ｆの天板４３に結合部材５０Ｆの天板５１を接合する。この結果、天板３３，４３同士を結合部材５０Ｆの天板５１によって接合することができる。
また、クロスメンバ２４の前側の縦壁３１に結合部材５０Ｆの縦壁５２，５３を接合し、終端部４４Ｆにおける縦壁４１，４２に結合部材５０Ｆの縦壁５２，５３を接合する。この結果、前側の縦壁３１と終端部４４Ｆの縦壁４１，４２とを結合部材５０Ｆの縦壁５２，５３によって接合することができる。
このようにして、クロスメンバ２４と前の終端部４４Ｆとを、前の結合部材５０Ｆによって接合する。 The joining procedure using the previous coupling member 50F is as follows.
First, the front coupling member 50F is covered from above on the cross member 24 and the front end portion 44F arranged in a T shape in plan view.
Then, the top plate 51 of the coupling member 50F is joined to the top plate 33 of the cross member 24, and the top plate 51 of the coupling member 50F is joined to the top plate 43 of the terminal end portion 44F. As a result, the top plates 33 and 43 can be joined together by the top plate 51 of the coupling member 50F.
Further, the vertical walls 52 and 53 of the coupling member 50F are joined to the vertical wall 31 on the front side of the cross member 24, and the vertical walls 52 and 53 of the coupling member 50F are joined to the vertical walls 41 and 42 at the end portion 44F. As a result, the front vertical wall 31 and the vertical walls 41 and 42 of the terminal end portion 44F can be joined by the vertical walls 52 and 53 of the coupling member 50F.
In this way, the cross member 24 and the front end portion 44F are joined by the front coupling member 50F.

後の結合部材５０Ｒによる接合も、前と同様の接合手順である。
先ず、平面視Ｔ字状に配置されたクロスメンバ２４と後の終端部４４Ｒに対して、後の結合部材５０Ｒを上から被せる。
そして、クロスメンバ２４の天板３３に結合部材５０Ｒの天板５１を接合し、終端部４４Ｒにおける天板４３に結合部材５０Ｒの天板５１を接合する。この結果、天板３３，４３同士を結合部材５０Ｒの天板５１によって接合することができる。
また、クロスメンバ２４の後側の縦壁３２に結合部材５０Ｒの縦壁５２，５３を接合し、終端部４４Ｒにおける縦壁４１，４２に結合部材５０Ｒの縦壁５２，５３を接合する。この結果、後側の縦壁３２と終端部４４Ｒの縦壁４１，４２とを結合部材５０Ｒの縦壁５２，５３によって接合することができる。
このようにして、クロスメンバ２４と後の終端部４４Ｒとを、後の結合部材５０Ｒによって接合する。 The joining by the subsequent connecting member 50R is the same joining procedure as before.
First, the rear coupling member 50R is placed on the cross member 24 and the rear end portion 44R arranged in a T shape in plan view from above.
Then, the top plate 51 of the coupling member 50R is joined to the top plate 33 of the cross member 24, and the top plate 51 of the coupling member 50R is joined to the top plate 43 at the terminal end portion 44R. As a result, the top plates 33 and 43 can be joined together by the top plate 51 of the coupling member 50R.
Further, the vertical walls 52 and 53 of the coupling member 50R are joined to the vertical wall 32 on the rear side of the cross member 24, and the vertical walls 52 and 53 of the coupling member 50R are joined to the vertical walls 41 and 42 in the terminal end portion 44R. As a result, the vertical wall 32 on the rear side and the vertical walls 41 and 42 of the terminal end portion 44R can be joined by the vertical walls 52 and 53 of the coupling member 50R.
In this way, the cross member 24 and the rear end portion 44R are joined by the rear coupling member 50R.

以上の説明から明らかなように、本実施例によれば、車体１１前後方向に細長いビードから成る前後（複数）のフロアフレーム２６Ｆ，２６Ｒを、クロスメンバ２４を挟んで前後両側に直列に配列し、前後のフロアフレーム２６Ｆ，２６Ｒにおける各終端部４４Ｆ，４４Ｒを、クロスメンバ２４の近傍に位置させ、各終端部４４Ｆ，４４Ｒとクロスメンバ２４とにおける、それぞれ縦壁３１，３２，４１，４２同士と天板３３，４３同士を、平面視Ｔ字状の結合部材５０Ｆ，５０Ｒによって接合したものである。このような構成によって、クロスメンバ２４と前後のフロアフレーム２６Ｆ，２６Ｒとの交差部分の剛性（車体１１の上下方向の荷重に対する剛性を含む）を、結合部材５０Ｆ，５０Ｒによって高めることができる。   As is apparent from the above description, according to the present embodiment, the front and rear (a plurality of) floor frames 26F and 26R made of beads elongated in the front-rear direction of the vehicle body 11 are arranged in series on both front and rear sides with the cross member 24 interposed therebetween. The end portions 44F and 44R in the front and rear floor frames 26F and 26R are positioned in the vicinity of the cross member 24, and the vertical walls 31, 32, 41, and 42 in the end members 44F and 44R and the cross member 24 are respectively And top plates 33 and 43 are joined together by T-shaped coupling members 50F and 50R in plan view. With such a configuration, the rigidity (including the rigidity with respect to the load in the vertical direction of the vehicle body 11) at the intersection between the cross member 24 and the front and rear floor frames 26F and 26R can be increased by the coupling members 50F and 50R.

ところで、クロスメンバ２４は略逆Ｕ字状断面体であるから、下方から見ると溝状の構成である。この溝の中において、クロスメンバ２４における前側の縦壁３１と後側の縦壁３２は、クロスメンバ２４の長手方向に配列された２つの縦リブ６１，６１によって、互いに繋がれている。２つの縦リブ６１，６１は、フロントフロアパネル２５の上面２５ａに対して垂直な平板であって、クロスメンバ２４の溝全体を長手方向で仕切る隔壁（バルクヘッド）の構成である。２つの縦リブ６１，６１によって、クロスメンバ２４の剛性を高めることができる。
なお、縦リブ６１，６１は、クロスメンバ２４の天板３３にも接合してもよい。その方が、クロスメンバ２４の剛性は、より高まる。 By the way, since the cross member 24 is a substantially inverted U-shaped cross-section, it has a groove-like configuration when viewed from below. In this groove, the front vertical wall 31 and the rear vertical wall 32 of the cross member 24 are connected to each other by two vertical ribs 61 and 61 arranged in the longitudinal direction of the cross member 24. The two vertical ribs 61, 61 are flat plates perpendicular to the upper surface 25a of the front floor panel 25, and have a configuration of a partition (bulk head) that partitions the entire groove of the cross member 24 in the longitudinal direction. The rigidity of the cross member 24 can be increased by the two vertical ribs 61 and 61.
Note that the vertical ribs 61 and 61 may also be joined to the top plate 33 of the cross member 24. In that case, the rigidity of the cross member 24 is further increased.

図４に示すように、２つの縦リブ６１，６１は、前後のフロアフレーム２６Ｆ，２６Ｒにおける左右の縦壁４１，４２に対して、概ね個別に連続するように配置されている。このため、フロアフレーム２６Ｆ，２６Ｒの縦壁４１，４２と、結合部材５０Ｆ，５０Ｒの縦壁５２，５３と、縦リブ６１，６１とは、概ね直線上に連続して延びる。従って、クロスメンバ２４と前後のフロアフレーム２６Ｆ，２６Ｒとの交差部分の剛性（車体上下方向の荷重に対する剛性を含む）を、結合部材５０Ｆ，５０Ｒによって、より一層高めることができる。   As shown in FIG. 4, the two vertical ribs 61, 61 are arranged so as to be generally continuous with the left and right vertical walls 41, 42 in the front and rear floor frames 26 </ b> F, 26 </ b> R. For this reason, the vertical walls 41 and 42 of the floor frames 26F and 26R, the vertical walls 52 and 53 of the coupling members 50F and 50R, and the vertical ribs 61 and 61 extend continuously on a substantially straight line. Therefore, the rigidity (including the rigidity against the load in the vertical direction of the vehicle body) at the intersection between the cross member 24 and the front and rear floor frames 26F, 26R can be further increased by the coupling members 50F, 50R.

しかも、車体前後方向に細長いビードから成る前後のフロアフレーム２６Ｆ，２６Ｒを、クロスメンバ２４を挟んで前後両側に直列に配列し、前後のフロアフレーム２６Ｆ，２６Ｒにおける終端部４４Ｆ，４４Ｒとクロスメンバ２４とを、平面視Ｔ字状の結合部材５０Ｆ，５０Ｒによって接合し、クロスメンバ２４における前後の縦壁３１，３２同士を、２つの縦リブ６１，６１によって繋いだだけの構成であるから、車体１１の重量はほとんど増加しない。つまり、車体１１の重量増加を抑制しつつ、剛性を高めることができる。   In addition, front and rear floor frames 26F and 26R made of beads that are elongated in the front-rear direction of the vehicle body are arranged in series on the front and rear sides with the cross member 24 interposed therebetween, and the end portions 44F and 44R and the cross member 24 in the front and rear floor frames 26F and 26R are arranged. Are joined by the T-shaped coupling members 50F and 50R in plan view, and the front and rear vertical walls 31 and 32 of the cross member 24 are simply connected by the two vertical ribs 61 and 61. The weight of 11 hardly increases. That is, the rigidity can be increased while suppressing an increase in the weight of the vehicle body 11.

上記図１〜図５に示す、クロスメンバ２４と前後のフロアフレーム２６Ｆ，２６Ｒとを結合部材５０Ｆ，５０Ｒによって結合した構成は、図６に示すように、車体１１における他の部位に適用することができる。図６は図１に示す結合部材を車体の各部に適用した適用例を示す説明図である。   The structure in which the cross member 24 and the front and rear floor frames 26F and 26R shown in FIGS. 1 to 5 are connected by the connecting members 50F and 50R are applied to other parts of the vehicle body 11 as shown in FIG. Can do. FIG. 6 is an explanatory view showing an application example in which the coupling member shown in FIG. 1 is applied to each part of the vehicle body.

適用例は、車両１０の後部に有している荷室７１において、車体１１のリヤフロアパネル７２の下面にクロスメンバ２４と前後のフロアフレーム２６Ｆ，２６Ｒとを沿わせて補強するとともに、クロスメンバ２４と前後のフロアフレーム２６Ｆ，２６Ｒを結合部材５０Ｆ，５０Ｒによって結合した構成である。適用例によれば、荷室７１のスペースを十分に確保した上で、軽量で高剛性のリヤフロアパネル７２を構成することができる。   In the application example, in the luggage compartment 71 provided at the rear portion of the vehicle 10, the cross member 24 and the front and rear floor frames 26 </ b> F and 26 </ b> R are reinforced along the lower surface of the rear floor panel 72 of the vehicle body 11. The front and rear floor frames 26F and 26R are coupled by coupling members 50F and 50R. According to the application example, it is possible to configure the rear floor panel 72 that is lightweight and highly rigid while sufficiently securing the space of the luggage compartment 71.

なお、本発明では、結合部材５０Ｆ，５０Ｒの材質は金属に限定されるものではなく、例えば樹脂製品であってもよい。   In the present invention, the material of the coupling members 50F and 50R is not limited to metal, and may be, for example, a resin product.

本発明の車体構造は、乗用車等の車両における車体に用いるのに好適である。   The vehicle body structure of the present invention is suitable for use in a vehicle body in a vehicle such as a passenger car.

本発明に係る車室周りの車体の斜視図である。It is a perspective view of the vehicle body around the passenger compartment according to the present invention. 図１に示すフロアフレームとクロスメンバと結合部材の結合部分の斜視図である。It is a perspective view of the coupling | bond part of the floor frame shown in FIG. 1, a cross member, and a coupling member. 図２の３−３線断面図である。FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. 図２に示すフロアフレームとクロスメンバと結合部材の一部を破断した平面図である。FIG. 3 is a plan view in which a part of a floor frame, a cross member, and a coupling member shown in FIG. 2 is broken. 図２に示すフロアフレームとクロスメンバと結合部材の分解図である。FIG. 3 is an exploded view of the floor frame, cross member, and coupling member shown in FIG. 2. 図１に示す結合部材を車体の各部に適用した適用例を示す説明図である。It is explanatory drawing which shows the application example which applied the coupling member shown in FIG. 1 to each part of a vehicle body.

符号の説明Explanation of symbols

１０…車両、１１…車体、２４…クロスメンバ、２５，７２…フロアパネル、２５ａ…一方の面、２６Ｆ，２６Ｒ…フロアフレーム、３１…左の縦壁（前側の縦壁）、３２…右の縦壁（後側の縦壁）、３３…天板、４１…左の縦壁、４２…右の縦壁、４３…天板、４４Ｆ，４４Ｒ…終端部、５０Ｆ，５０Ｒ…結合部材、５１…天板、５２…左の縦壁、５３…右の縦壁、６１…縦リブ。   DESCRIPTION OF SYMBOLS 10 ... Vehicle, 11 ... Vehicle body, 24 ... Cross member, 25, 72 ... Floor panel, 25a ... One side, 26F, 26R ... Floor frame, 31 ... Left vertical wall (front vertical wall), 32 ... Right Vertical wall (rear vertical wall), 33 ... top plate, 41 ... left vertical wall, 42 ... right vertical wall, 43 ... top plate, 44F, 44R ... terminal part, 50F, 50R ... coupling member, 51 ... Top plate, 52 ... left vertical wall, 53 ... right vertical wall, 61 ... vertical rib.

Claims (1)

フロアパネルと、このフロアパネルの一方の面に沿って設けられたクロスメンバ及び複数のフロアフレームとを有している車体構造であって、
前記クロスメンバは、車幅方向へ延びており、
前記複数のフロアフレームは、前記フロアパネルから膨出した、車体前後方向に細長いビードから成り、前記クロスメンバを挟んで前後両側に直列に配列され、
前記複数のフロアフレームにおける終端部が、前記クロスメンバの近傍に位置することにより、前記各終端部は前記クロスメンバに対して平面視でＴ字状に配置されており、
前記複数のフロアフレーム及び前記クロスメンバは、それぞれ前記フロアパネルの前記一方の面に対して起立した左右の縦壁と、これら左右の縦壁の上端間を塞いだ天板とから成る、略逆Ｕ字状断面に形成されており、
前記各終端部と前記クロスメンバとは、それぞれ縦壁同士と天板同士が平面視Ｔ字状の結合部材によって接合され、
前記クロスメンバにおける左右の縦壁同士は、前記クロスメンバの長手方向に配列された２つの縦リブによって、互いに繋がれており、
この２つの縦リブは、前記複数のフロアフレームにおける左右の縦壁に対して、概ね個別に連続するように配置されていることを特徴とした車体構造。 A vehicle body structure having a floor panel, a cross member provided along one surface of the floor panel, and a plurality of floor frames,
The cross member extends in the vehicle width direction,
The plurality of floor frames are swelled from the floor panel, and are composed of beads that are elongated in the front-rear direction of the vehicle body, arranged in series on both front and rear sides with the cross member interposed therebetween,
Since the end portions of the plurality of floor frames are positioned in the vicinity of the cross member, the end portions are arranged in a T shape in a plan view with respect to the cross member,
The plurality of floor frames and the cross member are each composed of left and right vertical walls that stand up with respect to the one surface of the floor panel, and a top plate that blocks between the upper ends of the left and right vertical walls. Formed in a U-shaped cross section,
Each of the end portions and the cross member are joined to each other by a connecting member having a T-shape in a plan view between the vertical walls and the top plates,
The left and right vertical walls of the cross member are connected to each other by two vertical ribs arranged in the longitudinal direction of the cross member,
The vehicle body structure is characterized in that the two vertical ribs are arranged so as to be generally continuous with respect to the left and right vertical walls of the plurality of floor frames.
JP2007277411A 2007-10-25 2007-10-25 Body structure Expired - Fee Related JP5078546B2 (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN113247113A (en) * 2021-05-21 2021-08-13 重庆长安汽车股份有限公司 Automobile floor panel reinforcing structure

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JPS56120460A (en) * 1980-02-27 1981-09-21 Mazda Motor Corp Body panel structure of automobile
JPS60170220U (en) * 1984-04-21 1985-11-12 ダイハツ工業株式会社 Air inlet structure of cab-over type vehicles
JPS6313387U (en) * 1986-07-14 1988-01-28
JPS6456368U (en) * 1987-10-05 1989-04-07
JP2002120754A (en) * 2000-10-17 2002-04-23 Suzuki Motor Corp Vehicular frame structure
JP2004314663A (en) * 2003-04-11 2004-11-11 Toyota Motor Corp Car body structure
JP2007045319A (en) * 2005-08-10 2007-02-22 Toyota Motor Corp Vehicle floor structure

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JPS56120460A (en) * 1980-02-27 1981-09-21 Mazda Motor Corp Body panel structure of automobile
JPS60170220U (en) * 1984-04-21 1985-11-12 ダイハツ工業株式会社 Air inlet structure of cab-over type vehicles
JPS6313387U (en) * 1986-07-14 1988-01-28
JPS6456368U (en) * 1987-10-05 1989-04-07
JP2002120754A (en) * 2000-10-17 2002-04-23 Suzuki Motor Corp Vehicular frame structure
JP2004314663A (en) * 2003-04-11 2004-11-11 Toyota Motor Corp Car body structure
JP2007045319A (en) * 2005-08-10 2007-02-22 Toyota Motor Corp Vehicle floor structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113247113A (en) * 2021-05-21 2021-08-13 重庆长安汽车股份有限公司 Automobile floor panel reinforcing structure

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