JPH10203423A - Floor structure for car body and manufacture of cross member used in this floor structure - Google Patents
Floor structure for car body and manufacture of cross member used in this floor structureInfo
- Publication number
- JPH10203423A JPH10203423A JP812197A JP812197A JPH10203423A JP H10203423 A JPH10203423 A JP H10203423A JP 812197 A JP812197 A JP 812197A JP 812197 A JP812197 A JP 812197A JP H10203423 A JPH10203423 A JP H10203423A
- Authority
- JP
- Japan
- Prior art keywords
- cross member
- floor panel
- vehicle body
- floor
- joined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/20—Floors or bottom sub-units
- B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
- B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、自動車等の車体の
フロア構造及びこのフロア構造に用いられるクロスメン
バの製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a vehicle body such as an automobile and a method of manufacturing a cross member used for the floor structure.
【0002】[0002]
【従来の技術】従来から、自動車等の車体のフロア構造
として、図6及び図7に示すように、前後方向(車両前
後方向)に延びるトンネル部1aを有するフロントフロ
アパネル1(以下、F・フロアパネル1という)とこの
F・フロアパネル1の後方でその上方に位置するセンタ
フロアパネル2(C・フロアパネル2という)との間に
クロスメンバ3を配設し、クロスメンバ3を介して両フ
ロアパネル1,2を接合することは一般に行われてい
る。2. Description of the Related Art Conventionally, as a floor structure of a body of an automobile or the like, as shown in FIGS. 6 and 7, a front floor panel 1 (hereinafter referred to as F.F.) having a tunnel portion 1a extending in the front-rear direction (vehicle front-rear direction). A cross member 3 is provided between a floor panel 1) and a center floor panel 2 (referred to as C floor panel 2) located behind and above the F floor panel 1 and via the cross member 3. It is common to join both floor panels 1 and 2 together.
【0003】このようなフロア構造において、クロスメ
ンバ3は、図7に示すように前後方向に延びる略平坦面
からなる前側固定部3aと、その後端から立ち上がる立
壁部3bと、この立壁部3bの上端から後方に延びる後
側固定部3cとを有した形状とされるとともに、前側固
定部3a及び立壁部3bの幅方向中央部には、上記F・
フロアパネル1のトンネル部1aに対応するトンネル部
4が形成されている。一方、C・フロアパネル2は、リ
アフロアパネルに接合される平坦な接合部2aと、その
先端から下方に延びる壁面部2bと、その下端から前方
に向かって延びて先端が下方に折曲される固定部2cと
を有した形状とされている。In such a floor structure, as shown in FIG. 7, the cross member 3 includes a front fixing portion 3a having a substantially flat surface extending in the front-rear direction, an upright wall portion 3b rising from the rear end thereof, and an upright wall portion 3b. A rear fixing portion 3c extending rearward from the upper end has a shape having a rear fixing portion 3c.
A tunnel portion 4 corresponding to the tunnel portion 1a of the floor panel 1 is formed. On the other hand, the C floor panel 2 has a flat joint portion 2a joined to the rear floor panel, a wall surface portion 2b extending downward from the front end, and a front end extending downward from the lower end and bent downward. It has a shape having a fixing portion 2c.
【0004】そして、トンネル部1aにトンネル部4を
対応させた状態で前側固定部3aの先端がF・フロアパ
ネル1の後端に重ね合わされて溶接されるとともに、後
側固定部3cの後端がC・フロアパネル2の平坦部2a
に、C・フロアパネル2の固定部2cがクロスメンバ3
の立壁部3bにそれぞれ溶接されることにより、F・フ
ロアパネル1及びC・フロアパネル2がクロスメンバ3
を介して接合されている。そして、同図に示すように、
C・フロアパネル2及びクロスメンバ3によって幅方向
に延びる閉空間5が形成されるようになっている。The front end of the front fixing portion 3a is overlapped and welded to the rear end of the floor panel 1 with the tunnel portion 4 corresponding to the tunnel portion 1a, and the rear end of the rear fixing portion 3c. Is the flat part 2a of the C floor panel 2.
The fixing member 2c of the C / floor panel 2 is
Are welded to the standing wall 3b of the F. floor panel 1 and the C floor panel 2 respectively.
Are joined through. And, as shown in FIG.
The C / floor panel 2 and the cross member 3 form a closed space 5 extending in the width direction.
【0005】[0005]
【発明が解決しようとする課題】ところで、上記のよう
なクロスメンバ3を製造する場合には、トンネル部4の
存在によりクロスメンバ3全体を一体にプレス成型する
ことは不可能である。そのため、通常は、図8に示すよ
うに、断面略U字形のトンネル構成部材8をプレス成型
するとともに、これとは別に、前側固定部3a、立壁部
3b及び後側固定部3cを有し、前側固定部3a及び立
壁部3bにわたって切欠き部6を備えた本体7をプレス
成型し、切欠き部6にトンネル構成部材8を嵌め合わせ
て相互に溶接することによりクロスメンバ3を製造して
いた。When the above-described cross member 3 is manufactured, it is impossible to press-mold the entire cross member 3 integrally due to the presence of the tunnel portion 4. Therefore, as shown in FIG. 8, usually, as shown in FIG. 8, the tunnel constituent member 8 having a substantially U-shaped cross section is press-molded, and separately from this, a front fixed portion 3a, an upright wall portion 3b, and a rear fixed portion 3c are provided. The cross member 3 was manufactured by press-molding the main body 7 having the notch 6 over the front fixing portion 3a and the upright wall 3b, fitting the tunnel component 8 into the notch 6 and welding them together. .
【0006】しかし、この製造方法の場合には、本体7
に切欠き部6を設けるべく材料である鋼板の一部を切り
取る必要があり、通常、これらの切り取られた材料を廃
棄していたため、これが歩留まりを低下させる一つの要
素となっているという問題がある。However, in the case of this manufacturing method, the main body 7
It is necessary to cut off a part of the steel plate, which is a material, in order to provide the notch 6, and usually the scrapped material is discarded, which is one factor that reduces the yield. is there.
【0007】また、ホイルベースの長い車両では、クロ
スメンバ3の前側固定部3aの寸法(図中Lで示す)が
長く、上記クロスメンバ3の構造では、ホイルベースの
短い車両のクロスメンバをホイルベースの長い車両のク
ロスメンバとして共通して用いることができない。その
ため、ホイルベースの長さに応じた本体7やトンネル構
成部材8をそれぞれ製造する必要があり、部品の共通化
を図ることができないという問題もある。In a vehicle having a long wheel base, the front fixing portion 3a of the cross member 3 has a long dimension (indicated by L in the figure). In the structure of the cross member 3, a cross member of a vehicle having a short wheel base has a long wheel base. It cannot be commonly used as a cross member of a vehicle. Therefore, it is necessary to manufacture each of the main body 7 and the tunnel constituent member 8 according to the length of the wheel base, and there is a problem that parts cannot be shared.
【0008】さらに、上記クロスメンバ3においては、
図8に示すようにトンネル構成部材8に鋼板等の防振板
を重ねて溶接することによってトンネル部4におけるク
ロスメンバ3の振動を抑えることが行われるが、構造の
簡略化の面からは防振板を用いることなくトンネル部4
での振動を抑えることができる方が望ましい。Further, in the cross member 3,
As shown in FIG. 8, vibration of the cross member 3 in the tunnel portion 4 is suppressed by overlapping and welding a vibration isolating plate such as a steel plate on the tunnel constituent member 8, but from the viewpoint of simplification of the structure. Tunnel part 4 without using diaphragm
It is desirable to be able to suppress vibrations at the surface.
【0009】本発明は、上記問題を解決するためになさ
れたものであり、車両の生産をより合理化することがで
きる車体のフロア構造及びこのフロア構造に用いられる
クロスメンバの製造方法を提供することを目的としてい
る。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a vehicle body floor structure capable of streamlining vehicle production and a method of manufacturing a cross member used in the floor structure. It is an object.
【0010】[0010]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、断面略U字形の膨出部を有する第1のフ
ロアパネルとその後方に位置する第2のフロアパネルと
がクロスメンバを介して前後に接続され、上記クロスメ
ンバが、前後に延びて上記第1のフロアパネルの後端に
接合される前側固定部と、この前側固定部の後端部から
立ち上がる立壁部と、この立壁部の上端から後方に延び
て上記第2のフロアパネルに接合される後側固定部とか
ら構成されるとともに、上記前側固定部及び立壁部にわ
たって断面略U字形の膨出部が形成され、この膨出部が
上記第1のフロアパネルの膨出部に重合した状態でクロ
スメンバが第1のフロアパネルに接合されるように構成
された車体のフロア構造において、上記クロスメンバ
は、上記膨出部を含む前側固定部及び立壁部の部分から
なる前側クロスメンバとそれ以後の部分からなる後側ク
ロスメンバとから構成され、これらの各クロスメンバが
前後に接合されてなるものである(請求項1)。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a first floor panel having a bulging portion having a substantially U-shaped cross section and a second floor panel located behind the first floor panel. A front fixing portion that is connected back and forth via a member, the cross member extends back and forth, and is joined to a rear end of the first floor panel; a standing wall portion rising from the rear end of the front fixing portion; A rear fixing portion extending rearward from an upper end of the standing wall portion and joined to the second floor panel, and a bulging portion having a substantially U-shaped cross section is formed over the front fixing portion and the standing wall portion. The cross member may be joined to the first floor panel in a state where the bulging portion overlaps with the bulging portion of the first floor panel. Including bulge Is composed of a side cross member after consisting front cross member and the subsequent portion consisting of part of the front fixing portion and the vertical wall portion, in which each of these cross members, which are joined to front and rear (claim 1).
【0011】この構造によれば、クロスメンバが前側ク
ロスメンバ及び後クロスメンバからなる分割構造となっ
ているため、ホイルベースの異なる車両については、前
側固定部の前後方向の寸法が異なる前側クロスメンバを
製作することにより、ホイルベースの異なる車種間で後
側クロスメンバを共通して用いることが可能となる。[0011] According to this structure, since the cross member has a divided structure including the front cross member and the rear cross member, for vehicles having different wheel bases, the front cross member having the front fixed portion having different dimensions in the front-rear direction is used. By manufacturing, it becomes possible to use the rear cross member in common between different types of wheel-based vehicles.
【0012】また、請求項1記載の車体のフロア構造に
おいて、第1のフロアパネル及びクロスメンバの各膨出
部の上面が略平坦な面から構成される場合には、前側ク
ロスメンバを膨出部において車両幅方向に接合される左
右一対の単位クロスメンバから構成し、各単位クロスメ
ンバを膨出部上面において重ね合わせた状態で接合する
ようにすれば(請求項2)、膨出部上面の剛性を高める
ことが可能となり、防振板等を設けることなく、走行中
比較的振動が生じ易い上記膨出部上面のような平坦面で
の振動を抑えることが可能となる。In the vehicle body floor structure according to the first aspect, when the upper surfaces of the first floor panel and the bulging portions of the cross member are substantially flat surfaces, the front cross member is bulged. If the unit is composed of a pair of left and right unit cross members joined in the vehicle width direction and the unit cross members are joined in a state of being overlapped on the upper surface of the bulging portion (claim 2), the upper surface of the bulging portion The rigidity of the swelling can be increased, and vibrations on a flat surface such as the upper surface of the bulging portion, where vibrations are relatively likely to occur during traveling, can be suppressed without providing a vibration isolating plate or the like.
【0013】特に、第1のフロアパネル及びクロスメン
バの上記膨出部が排気管等を配設する車両フロアのトン
ネル部を形成するもので、前側クロスメンバが、車両幅
方向中央において前後に延びる略平坦な上面部と、この
上面部の後端において車両幅方向に延びる接合部と、上
面部の幅方向両端及び接合部にわたってこれらの縁部か
ら下方に延びる壁部と、この壁部の下端部において上面
部と略平行に形成される底面部とを具備しいる車体のフ
ロア構造について請求項1又は2記載の車体のフロア構
造を採用すれば(請求項3)、特に有効である。In particular, the first floor panel and the bulging portion of the cross member form a tunnel portion of a vehicle floor on which an exhaust pipe and the like are arranged, and the front cross member extends forward and backward at the center in the vehicle width direction. A substantially flat upper surface, a joint extending in the vehicle width direction at a rear end of the upper surface, a wall extending downward from these edges over both ends in the width direction of the upper surface and the joint, and a lower end of the wall; It is particularly effective if the floor structure of the vehicle body according to claim 1 or 2 is adopted (claim 3) for the floor structure of the vehicle body having a top surface portion and a bottom surface portion formed substantially parallel to the portion.
【0014】また、請求項1乃至3のいずれかに記載の
車体のフロア構造において、クロスメンバと協働して車
両幅方向に延びる閉空間を形成するレインフォースメン
トを配設するとともに、このレインフォースメントの一
端を前側クロスメンバと後側クロスメンバとの接合部分
に重ね合わせて一体に接合するようにすれば(請求項
4)、レインフォースメントを設けて車両フロアを幅方
向に補強することができるとともに、前側及び後側クロ
スメンバとレインフォースメントとを一体に溶接するこ
とにより接合位置の集約化を図ることが可能となる。In the vehicle body floor structure according to any one of claims 1 to 3, a reinforcement for forming a closed space extending in the vehicle width direction in cooperation with the cross member is provided. If one end of the reinforcement is overlapped with a joint portion between the front cross member and the rear cross member so as to be integrally joined (claim 4), a reinforcement is provided to reinforce the vehicle floor in the width direction. In addition, by integrally welding the front and rear cross members and the reinforcement, the joining positions can be centralized.
【0015】また、本発明は、上記請求項1乃至4のい
ずれかに記載の車体のフロア構造に用いられるクロスメ
ンバの製造方法であって、一側方を開放した平面視で略
方形の凹部を有するとともに、この凹部を構成する側壁
のうち上記開放部に対向する側壁の上端縁に略水平なつ
ば部を具備した基体を形成し、この基体を上記開放部と
つば部とを結ぶ方向と直交する方向に二分割して一対の
単位基体を形成し、平面上で各単位基体を展開した後、
つば部同士を介して各単位基体を接合することにより上
記前側クロスメンバを形成するようにしたものである
(請求項5)。The present invention also relates to a method of manufacturing a cross member for use in a floor structure of a vehicle body according to any one of claims 1 to 4, wherein the recess is formed in a substantially square shape with one side open in a plan view. And forming a base having a substantially horizontal flange at an upper end edge of the side wall facing the opening among the side walls forming the recess, and connecting the base with the opening and the flange. After forming a pair of unit bases by dividing into two in the orthogonal direction, and developing each unit base on a plane,
The front cross member is formed by joining the unit bases via the brim portions (claim 5).
【0016】このような方法によれば、前側クロスメン
バを簡単に、しかも材料の無駄を無くして合理的に製作
することが可能となる。According to such a method, the front cross member can be manufactured simply and rationally without waste of material.
【0017】[0017]
【発明の実施の形態】本発明の実施の形態について図面
を用いて説明する。Embodiments of the present invention will be described with reference to the drawings.
【0018】図1は、本発明に係る車体のフロア構造の
一例を示す要部斜視図である。この図に示す車体のフロ
ア構造も基本的には従来のフロア構造と同様の構造であ
り、フロントフロアパネル10(以下、F・フロアパネ
ル10という)とその後方のセンタフロアパネル12
(以下、C・フロアパネル12という)との間にクロス
メンバ13が配設され、このクロスメンバ13を介して
両フロアパネル10,12が車両の前後方向(以下、単
に前後方向という)に接合されているとともに、C・フ
ロアパネル12及びクロスメンバ13によって車幅方向
(以下、左右方向という)に延びる閉空間35が形成さ
れている。そして、この構造では、さらに閉空間35内
にクロスメンバレインフォースメント30(以下、クロ
スメンバレイン30という)が配設されることにより、
クロスメンバ13及びクロスメンバレイン30によって
左右方向に延びる閉空間36が形成され、これら閉空間
35,36により左右方向の補強がなされるようになっ
ている。FIG. 1 is a perspective view of an essential part showing an example of a floor structure of a vehicle body according to the present invention. The floor structure of the vehicle body shown in this figure is basically the same as the conventional floor structure, and includes a front floor panel 10 (hereinafter referred to as an F floor panel 10) and a center floor panel 12 behind the front floor panel 10.
(Hereinafter referred to as C floor panel 12), a cross member 13 is provided, and both floor panels 10, 12 are joined in the front-rear direction of the vehicle (hereinafter simply referred to as front-rear direction) via the cross member 13. In addition, a closed space 35 extending in the vehicle width direction (hereinafter, referred to as a left-right direction) is formed by the C floor panel 12 and the cross member 13. In this structure, the cross member reinforcement 30 (hereinafter, referred to as cross member rain 30) is further provided in the closed space 35,
A closed space 36 extending in the left-right direction is formed by the cross member 13 and the cross member rain 30, and reinforcement in the left-right direction is made by these closed spaces 35, 36.
【0019】F・フロアパネル10は、左右方向中央に
おいて車室側に膨出して前後方向に延びるトンネル部1
0aと、その左右両側の略平坦な面からなる側部10b
とを有している。トンネル部10aは上面が平坦な断面
略U字形とされており、このようなトンネル部10aが
設けられることにより車両の前後方向の強度が高められ
ているとともに、その下方の空間を利用して排気管や駆
動伝達のためのプロペラシャフトが配設されるようにな
っている。The floor panel 10 bulges toward the passenger compartment at the center in the left-right direction and extends in the front-rear direction.
0a and a side portion 10b composed of substantially flat surfaces on both left and right sides thereof.
And The tunnel portion 10a has a substantially U-shaped cross section with a flat upper surface. By providing such a tunnel portion 10a, the strength in the front-rear direction of the vehicle is enhanced, and exhaust is performed by utilizing a space below the tunnel portion 10a. A pipe and a propeller shaft for driving transmission are provided.
【0020】クロスメンバ13は、前側クロスメンバ1
4及び後側クロスメンバ15からなり、これらが溶接さ
れて一体化された構成となっている。The cross member 13 is a front cross member 1
4 and a rear cross member 15, which are welded and integrated.
【0021】図1〜3に示すように、前側クロスメンバ
14は、左右中央において前後に延びる略平面からなる
上面部16と、この上面部16の後端において左右に延
びて立ち上げられる接合部17と、上面部16の左右両
端及び接合部17の縁部から下方に延びる壁面部18
と、各壁面部18の下端部に連設される上記上面部16
と略平行な底面部19とを有した構成とされている。こ
れにより、前側クロスメンバ14の左右中央に、上面部
16及び壁面部18によって上記F・フロアパネル10
のトンネル部10aに対応するトンネル部が形成されて
いる。一方、後側クロスメンバ15は、左右に延びる略
鉛直な平面からなる壁面部20と、この壁面部20の上
端部から後方に延びる固定部21とを有した構成となっ
ている。そして、同図に示すように、前側クロスメンバ
14の接合部17上端と後側クロスメンバ15の壁面部
20の下端部とが重ね合わされた状態で相互に溶接され
ることによって両クロスメンバ14,15が一体化され
てクロスメンバ13が構成されている。As shown in FIGS. 1 to 3, the front cross member 14 has an upper surface portion 16 formed of a substantially flat surface extending in the front-rear direction at the center in the left and right direction, and a joining portion extending right and left at the rear end of the upper surface portion 16. 17 and a wall portion 18 extending downward from both left and right ends of the upper surface portion 16 and an edge of the joint portion 17
And the upper surface portion 16 connected to the lower end of each wall portion 18
And a bottom portion 19 that is substantially parallel to the bottom surface. As a result, the F / floor panel 10 is formed by the upper surface 16 and the wall 18 at the left and right centers of the front cross member 14.
A tunnel portion corresponding to the tunnel portion 10a is formed. On the other hand, the rear side cross member 15 is configured to include a wall portion 20 that is formed in a substantially vertical plane extending in the left and right direction, and a fixed portion 21 that extends rearward from the upper end of the wall portion 20. Then, as shown in the figure, the upper end of the joint 17 of the front side cross member 14 and the lower end of the wall portion 20 of the rear side cross member 15 are welded to each other in a state where they are overlapped with each other. 15 are integrated to form a cross member 13.
【0022】C・フロアパネル12は、前後に延びる略
水平面かなる先端の固定部26と、その後端から上方に
延びる壁面部27と、この壁面部27の上端から後方に
延びて図外のリアフロアパネルに接合される接合部28
とを有した構成となっている。なお、固定部26の左右
両端部は下方に折り曲げられ、これによって固定部26
の両端に略鉛直面からなる固定部25が形成されてい
る。The floor panel 12 has a fixed portion 26 at the front end, which is formed in a substantially horizontal plane and extends forward and backward, a wall portion 27 extending upward from the rear end, and a rear floor (not shown) extending rearward from the upper end of the wall portion 27. Joint 28 to be joined to panel
And a configuration having The left and right ends of the fixing portion 26 are bent downward, so that the fixing portion 26
Are formed at both ends of the base member.
【0023】クロスメンバレイン30は、前後に延びる
略水平面からなる平面部32と、その後端から上方に延
びる壁面部33と、この壁面部27の上端から後方に延
びる接合部34とを有した構成となっており、その先端
には上記平面部32の先端が下方に折り曲げられること
により固定部31が形成されている。The cross member rain 30 has a flat portion 32 extending substantially in the front and rear direction, a substantially horizontal plane, a wall portion 33 extending upward from the rear end, and a joining portion 34 extending rearward from the upper end of the wall portion 27. The fixed portion 31 is formed at the tip of the flat portion 32 by bending the tip of the flat portion 32 downward.
【0024】そして、図1〜図3に示すように、上面部
16及び壁面部18によって形成される前側クロスメン
バ14の上記トンネル部がF・フロアパネル10のトン
ネル部10aに、前側クロスメンバ14の底面部19が
F・フロアパネル10の側部10bにそれぞれ重ね合わ
された状態でF・フロアパネル10の後端にクロスメン
バ13が接合され、また、後側クロスメンバ15の固定
面21後端がクロスメンバレイン30を介してC・フロ
アパネル12の接合部28に重ね合わされるとともに、
C・フロアパネル12の固定部26が前側クロスメンバ
14の上面部16裏面に、また固定部25が前側クロス
メンバ14の壁面部18にそれぞれ重ね合わされた状態
でC・フロアパネル12とクロスメンバ13とが接合さ
れている。As shown in FIGS. 1 to 3, the tunnel portion of the front cross member 14 formed by the upper surface portion 16 and the wall portion 18 is connected to the tunnel portion 10 a of the F / floor panel 10. The cross member 13 is joined to the rear end of the F / floor panel 10 in a state where the bottom portion 19 of the F / floor panel 10 is overlapped with the side portion 10b of the F / floor panel 10, and the rear end of the fixed surface 21 of the rear cross member 15 Is superimposed on the joint 28 of the C / floor panel 12 via the cross member rain 30,
The C-floor panel 12 and the cross member 13 are fixed with the fixing portion 26 of the C-floor panel 12 on the back surface of the upper surface 16 of the front cross member 14 and the fixing portion 25 on the wall portion 18 of the front-side cross member 14, respectively. And are joined.
【0025】これによってF・フロアパネル10とC・
フロアパネル12とがクロスメンバ13を介して接合さ
れるとともに、C・フロアパネル12及びクロスメンバ
13により閉空間35が形成されている。Thus, the F. floor panel 10 and the C.
The floor panel 12 is joined via the cross member 13, and a closed space 35 is formed by the C floor panel 12 and the cross member 13.
【0026】そして、この閉空間35内にクロスメンバ
レイン30が配設されてクロスメンバ13及びC・フロ
アパネル12に溶接、接合されている。具体的には、前
側クロスメンバ14の接合部17先端を上記後側クロス
メンバ15の壁面部20と固定部31とで挟むようにク
ロスメンバレイン30の先端がクロスメンバ13に接合
され、後側クロスメンバ15の固定面21後端とC・フ
ロアパネル12の接合部28とで接合部34が挟まれた
状態でクロスメンバレイン30の後端がクロスメンバ1
3及びC・フロアパネル12に接合されている。これに
よってクロスメンバ13及びクロスメンバレイン30に
よって左右方向に延びる上記閉空間36が形成されてい
る。The cross member rain 30 is disposed in the closed space 35 and is welded and joined to the cross member 13 and the C / floor panel 12. Specifically, the front end of the cross member rain 30 is joined to the cross member 13 such that the front end of the joint portion 17 of the front cross member 14 is sandwiched between the wall portion 20 of the rear cross member 15 and the fixing portion 31. The rear end of the cross member rain 30 is cross member 1 in a state in which the joint 34 is sandwiched between the rear end of the fixing surface 21 of the cross member 15 and the joint 28 of the C / floor panel 12.
3 and the C floor panel 12. As a result, the closed space 36 extending in the left-right direction is formed by the cross member 13 and the cross member rain 30.
【0027】このような車体のフロア構造によれば、上
述のようにクロスメンバ13が前側クロスメンバ14及
び後側クロスメンバ15からなる分割構造を有している
ため、ホイルベースが異なる車両については、前後方向
の寸法(図1中符号Lで示す)が問題となる部分、つま
り前側クロスメンバ14のみを新たに製作すれば、後側
クロスメンバ15についてはそのまま適用することがで
きる。従って、異車種間での部品の共通化を促進するこ
とができ、これによって車両生産の合理化を図ることが
できる。According to such a floor structure of the vehicle body, since the cross member 13 has the divided structure including the front cross member 14 and the rear cross member 15 as described above, for vehicles having different wheel bases, If only the portion where the dimension in the front-rear direction (indicated by the symbol L in FIG. 1) becomes a problem, that is, only the front cross member 14 is newly manufactured, the rear cross member 15 can be applied as it is. Therefore, it is possible to promote the common use of parts between different types of vehicles, and thereby to rationalize vehicle production.
【0028】また、上記の構造では、クロスメンバレイ
ン30を配設するに際し、前側クロスメンバ14の接合
部17先端を上記後側クロスメンバ15の壁面部20と
固定部31とで挟むようにクロスメンバレイン30の先
端をクロスメンバ13に接合するようにしているので、
例えば、前側クロスメンバ14と後側クロスメンバ15
とを接合してクロスメンバ13を製作する際にクロスメ
ンバレイン30の固定部31をこれらに一体に溶接(ス
ポット溶接)するようにすれば、溶接位置を集約するこ
とができ、これによって車両生産を合理化することがで
きるという特徴もある。Further, in the above structure, when the cross member rain 30 is provided, the cross member 17 of the front cross member 14 is sandwiched between the wall surface portion 20 of the rear cross member 15 and the fixing portion 31. Since the tip of the member rain 30 is joined to the cross member 13,
For example, the front cross member 14 and the rear cross member 15
When the fixing member 31 of the cross member rain 30 is integrally welded (spot welding) to the cross member 13 at the time of manufacturing the cross member 13 by joining them together, welding positions can be centralized, thereby producing a vehicle. There is also a feature that can be streamlined.
【0029】ところで、上記クロスメンバ13は、例え
ば、以下に説明するような方法により製作することがで
きる。The cross member 13 can be manufactured by, for example, a method described below.
【0030】先ず、前側クロスメンバ14の材料となる
鋼板のプレス加工により図4に示すような箱型の基体5
0を成型する。具体的には、一側方(短辺側)が開放さ
れた平面視で略長方形の凹部51を有し、この凹部51
を構成する側壁52の上端縁につば部を形成した基体5
0を成型する。この際、凹部51の長辺側に対応するつ
ば部(つば部53)を立ち上げるように成型するととも
に、凹部51の短辺側に、各つば部53に挟まれた水平
な平面部54を成型するようにする。First, a box-shaped base 5 as shown in FIG.
Mold 0. Specifically, it has a substantially rectangular concave portion 51 in plan view that is open on one side (short side).
5 having a flange formed on the upper edge of side wall 52 constituting
Mold 0. At this time, the flange (the flange 53) corresponding to the long side of the recess 51 is formed so as to rise, and the horizontal flat portion 54 sandwiched between the flanges 53 is formed on the short side of the recess 51. To be molded.
【0031】次いで、中心線(図中Rで示す)に沿って
基体50を凹部51の短辺方向に二分割した後、これら
を平面上で展開し、これによって図5に示すように相対
称な形状を有する一対の単位基体50a,50bを得
る。そして、同図の二点鎖線に示すように平面部54及
びつば部53が一定量だけ左右方向に重なり合うように
各単位基体50a,50bを重ね合わせた後、これらを
溶接して一体化する。これによって上記前側クロスメン
バ14を製作することができる。すなわち、各単位基体
50a,50bの凹部51の底面により前側クロスメン
バ14の上記底面部19が、平面部54により上記上面
部16が、側壁52により上記壁面部18が、つば部5
3により上記接合部17がそれぞれ形成される。Next, the base 50 is divided into two along the center line (indicated by R in the drawing) in the direction of the short side of the concave portion 51, and these are developed on a plane. A pair of unit bases 50a and 50b having various shapes are obtained. Then, after the unit bases 50a and 50b are overlapped so that the flat part 54 and the brim part 53 overlap by a fixed amount in the left-right direction as shown by the two-dot chain line in FIG. Thereby, the front cross member 14 can be manufactured. That is, the bottom surface portion 19 of the front cross member 14 is formed by the bottom surface of the concave portion 51 of each unit base 50a, 50b, the upper surface portion 16 is formed by the flat surface portion 54, the wall surface portion 18 is formed by the side wall 52, and the collar portion 5 is formed.
3 form the joints 17 respectively.
【0032】こうして前側クロスメンバ14を製作した
ら、説明を省略するが、プレス加工により別途成型して
おいた後側クロスメンバ15を前側クロスメンバ14に
溶接一体化する。これによって上記クロスメンバ13を
得るようにする。When the front cross member 14 is manufactured in this manner, the rear cross member 15 separately formed by press working is integrated with the front cross member 14 by welding, although the description is omitted. Thus, the cross member 13 is obtained.
【0033】このようにしてクロスメンバ13を製作す
るようにすれば、本体とトンネル構成部材を個別に製作
して合体させていた従来のこの種のクロスメンバの製作
方法(図8に示す)のように本体に切欠き部を設けるべ
く鋼板の一部を取り除いて廃棄等する必要がない。従っ
て、材料を有効に活用することができ、歩留まりを向上
させることが可能となる。If the cross member 13 is manufactured in this way, the conventional method of manufacturing a cross member of this type (shown in FIG. 8) in which the main body and the tunnel constituent members are manufactured separately and combined is shown. As described above, it is not necessary to remove a part of the steel plate and dispose it in order to provide the cutout portion in the main body. Therefore, the material can be effectively used, and the yield can be improved.
【0034】しかも、このようにして製作された前側ク
ロスメンバ14では、上述のように各単位基体50a,
50bの平面部54が重ね合わされた構造であるため、
トンネル部上面を形成する上面部16の剛性が高い。従
って、従来のように防振板を装着することなくクロスメ
ンバ13のトンネル部分上面の振動を抑えることができ
る。そのため、この点においても車体を合理的に製作で
きる。Further, in the front cross member 14 manufactured as described above, the unit bases 50a,
Because the structure is such that the flat portions 54 of 50b are overlapped,
The rigidity of the upper surface portion 16 forming the upper surface of the tunnel portion is high. Therefore, the vibration of the upper surface of the tunnel portion of the cross member 13 can be suppressed without mounting a vibration isolating plate as in the related art. Therefore, also in this respect, the vehicle body can be manufactured rationally.
【0035】[0035]
【発明の効果】以上説明したように、本発明は、膨出部
を有する第1のフロアパネルとその後方の第2のフロア
パネルとをクロスメンバを介して相互に接続するように
構成した車体のフロア構造において、クロスメンバを、
主に前側固定部及び立壁部からなる前側クロスメンバと
それ以後の部分からなる後側クロスメンバとによって構
成し、これら各クロスメンバを前後に接合するようにし
たので、ホイルベースの異なる車両については、前側固
定部の前後方向の寸法が異なる前側クロスメンバを製作
するようにすることで、ホイルベースの異なる車種間で
後側クロスメンバを共通して用いることが可能となる。
これにより生産面での合理化を図ることができる。As described above, the present invention relates to a vehicle body in which a first floor panel having a bulging portion and a second floor panel behind the first floor panel are connected to each other via a cross member. In the floor structure of
It is mainly composed of a front cross member consisting of a front fixed part and an upright wall part and a rear cross member consisting of the following parts, and these cross members are joined back and forth, so for vehicles having different wheel bases, By manufacturing front cross members having different front-to-rear dimensions of the front fixed portion, the rear cross member can be commonly used between different types of wheel-based vehicles.
Thereby, rationalization in production can be achieved.
【0036】また、前側クロスメンバを、さらに膨出部
において車両幅方向に接合される左右一対の単位クロス
メンバから構成し、各単位クロスメンバを膨出部上面に
おいて重ね合わせた状態で接合するようにすれば、膨出
部上面の剛性を高めることが可能となり、防振板等を設
けることなく、走行中比較的振動が生じ易い上記膨出部
上面のような平坦面での振動を抑えることができる。こ
れにより生産面での合理化を図ることができる。Further, the front cross member is further composed of a pair of left and right unit cross members joined in the vehicle width direction at the bulging portion, and the unit cross members are joined in a state of being overlapped on the upper surface of the bulging portion. By doing so, it is possible to increase the rigidity of the upper surface of the bulging portion, and to suppress vibration on a flat surface such as the upper surface of the bulging portion where vibration is relatively likely to occur during traveling without providing a vibration isolating plate or the like. Can be. Thereby, rationalization in production can be achieved.
【0037】さらに、クロスメンバと協働して車両幅方
向に延びる閉空間を形成するレインフォースメントを配
設するとともに、このレインフォースメントの一端を前
側クロスメンバと後側クロスメンバとの接合部分に重ね
合わせて一体に接合するようにすれば、レインフォース
メントを設けて車両フロアを幅方向に補強するこができ
るとともに、前側及び後側クロスメンバとレインフォー
スメントとを一体に溶接して接合位置の集約化を図るこ
とができる。これにより生産面での合理化を図ることが
できる。Further, a reinforcement for forming a closed space extending in the vehicle width direction in cooperation with the cross member is provided, and one end of the reinforcement is connected to a joining portion between the front cross member and the rear cross member. If it is made to overlap and join together, a reinforcement can be provided to reinforce the vehicle floor in the width direction, and the front and rear cross members and the reinforcement are integrally welded and joined. Aggregation of positions can be achieved. Thereby, rationalization in production can be achieved.
【0038】また、本発明は、一側方を開放した平面視
で略方形の凹部を有するとともに、この凹部を構成する
側壁のうち上記開放部に対向する側壁の上端縁に略水平
なつば部を具備した基体を形成し、この基体を上記開放
部とつば部とを結ぶ方向と直交する方向に二分割して一
対の単位基体を形成し、平面上で各単位基体を展開した
後、つば部同士を介して各単位基体を接合することによ
って前側クロスメンバを形成するようにしたので、上記
膨出部を形成しながらも材料を有効に活用することが可
能となり、これによりクロスメンバを合理的に生産する
ことが可能となる。Further, the present invention has a substantially rectangular recess in plan view with one side open, and a substantially horizontal flange portion at the upper end edge of the side wall facing the open portion among the side walls constituting the recess. After forming a pair of unit bases by dividing the base into two in a direction orthogonal to the direction connecting the open portion and the brim portion, and developing each unit base on a plane, the brim is formed. Since the front cross member is formed by joining the unit bases via the portions, it is possible to effectively utilize the material while forming the bulging portion. It becomes possible to produce it.
【図1】本発明に係る車体のフロア構造を示す要部斜視
図である。FIG. 1 is a perspective view of a main part showing a floor structure of a vehicle body according to the present invention.
【図2】車体のフロア構造を示す図1におけるB−B断
面図である。FIG. 2 is a sectional view taken along line BB in FIG. 1 showing a floor structure of the vehicle body.
【図3】車体のフロア構造を示す図1におけるC−C断
面図である。FIG. 3 is a sectional view taken along the line CC in FIG. 1, showing a floor structure of the vehicle body.
【図4】上記フロア構造に適用されるクロスメンバの製
作方法の一例を説明する図である。FIG. 4 is a diagram illustrating an example of a method of manufacturing a cross member applied to the floor structure.
【図5】上記フロア構造に適用されるクロスメンバの製
作方法の一例を説明する図である。FIG. 5 is a diagram illustrating an example of a method of manufacturing a cross member applied to the floor structure.
【図6】従来の車体のフロア構造を示す要部斜視図であ
る。FIG. 6 is a perspective view of a main part showing a floor structure of a conventional vehicle body.
【図7】従来の車体のフロア構造を示す図6におけるA
−A断面図である。FIG. 7 shows a floor structure of a conventional vehicle body in FIG.
It is -A sectional drawing.
【図8】従来の車体のフロア構造に適用されるクロスメ
ンバの製作方法を説明する図である。FIG. 8 is a diagram illustrating a method of manufacturing a cross member applied to a conventional vehicle body floor structure.
10 フロントフロアパネル(F・フロアパネル) 10a トンネル部 10b 側部 12 センタフロアパネル(C・フロアパネル) 13 クロスメンバ 14 前側クロスメンバ 15 後側クロスメンバ 16 上面部 17 接合部 18 壁面部 19 底面部 20 壁面部 21 固定部 Reference Signs List 10 Front floor panel (F / floor panel) 10a Tunnel part 10b Side part 12 Center floor panel (C / floor panel) 13 Cross member 14 Front cross member 15 Rear cross member 16 Top part 17 Joint part 18 Wall part 19 Bottom part 20 wall 21 fixed part
Claims (5)
ロアパネルとその後方に位置する第2のフロアパネルと
がクロスメンバを介して前後に接続され、上記クロスメ
ンバが、前後に延びて上記第1のフロアパネルの後端に
接合される前側固定部と、この前側固定部の後端部から
立ち上がる立壁部と、この立壁部の上端から後方に延び
て上記第2のフロアパネルに接合される後側固定部とか
ら構成されるとともに、上記前側固定部及び立壁部にわ
たって断面略U字形の膨出部が形成され、この膨出部が
上記第1のフロアパネルの膨出部に重合した状態でクロ
スメンバが第1のフロアパネルに接合されるように構成
された車体のフロア構造において、上記クロスメンバ
は、上記膨出部を含む前側固定部及び立壁部の部分から
なる前側クロスメンバとそれ以後の部分からなる後側ク
ロスメンバとから構成され、これらの各クロスメンバが
前後に接合されてなることを特徴とする車体のフロア構
造。1. A first floor panel having a bulged portion having a substantially U-shaped cross section and a second floor panel located behind the first floor panel are connected back and forth via a cross member. A front fixing portion extending and joined to a rear end of the first floor panel; a standing wall portion rising from a rear end of the front fixing portion; and a second floor panel extending rearward from an upper end of the standing wall portion. And a bulging portion having a substantially U-shaped cross section is formed over the front fixing portion and the upright wall portion, and the bulging portion is a bulging portion of the first floor panel. In a floor structure of a vehicle body configured such that the cross member is joined to the first floor panel in a state where the cross member is overlapped with the front member, the cross member includes a front fixed portion including the bulging portion and a front wall portion including a standing wall portion. Cross member And a rear cross member comprising a portion after that, and each of these cross members is joined to the front and rear, thereby providing a floor structure of a vehicle body.
バの各膨出部の上面が略平坦な面から構成されるもので
あって、上記前側クロスメンバは、上記膨出部において
車両幅方向に接合される左右一対の単位クロスメンバか
らなり、各単位クロスメンバが膨出部上面において重ね
合わされた状態で接合されていることを特徴とする請求
項1記載の車体のフロア構造。2. An upper surface of each of the bulging portions of the first floor panel and the cross member is formed of a substantially flat surface, and the front cross member is provided in the bulging portion in a vehicle width direction. 2. The floor structure of a vehicle body according to claim 1, comprising a pair of left and right unit cross members to be joined, wherein the unit cross members are joined in a state of being overlapped on the upper surface of the bulging portion.
メンバの上記各膨出部は車両フロアにおいてトンネル部
を形成するものであって、上記前側クロスメンバは、車
両幅方向中央において前後に延びる略平坦な上面部と、
この上面部の後端において車両幅方向に延びる接合部
と、上面部の幅方向両端及び接合部にわたってこれらの
縁部から下方に延びる壁部と、この壁部の下端部におい
て上面部と略平行に形成される底面部とを具備している
ものであることを特徴とする請求項1又は2記載の車体
のフロア構造。3. The bulging portion of the first floor panel and the cross member forms a tunnel in a vehicle floor, and the front cross member extends substantially forward and backward at a center in a vehicle width direction. A flat top part,
A joining portion extending in the vehicle width direction at a rear end of the upper surface portion, a wall portion extending downward from these edges over both ends in the width direction of the upper surface portion and the joining portion, and a lower end portion of the wall portion is substantially parallel to the upper surface portion. The floor structure of a vehicle body according to claim 1 or 2, further comprising a bottom portion formed on the vehicle body.
に延びる閉空間を形成するレインフォースメントが配設
されるとともに、このレインフォースメントの一端が上
記前側クロスメンバと後側クロスメンバとの接合部分に
重ね合わされた状態で接合されていることを特徴とする
請求項1乃至3のいずれかに記載の車体のフロア構造。4. A reinforcement for forming a closed space extending in the vehicle width direction in cooperation with the cross member is provided, and one end of the reinforcement is connected to the front cross member and the rear cross member. The floor structure of a vehicle body according to any one of claims 1 to 3, wherein the vehicle body is joined in a state of being superposed on the joint portion of the vehicle body.
車体のフロア構造に用いられるクロスメンバの製造方法
であって、一側方を開放した平面視で略方形の凹部を有
するとともに、この凹部を構成する側壁のうち上記開放
部に対向する側壁の上端縁に略水平なつば部を具備した
基体を形成し、この基体を上記開放部とつば部とを結ぶ
方向と直交する方向に二分割して一対の単位基体を形成
し、平面上で各単位基体を展開した後、つば部同士を介
して各単位基体を接合することにより上記前側クロスメ
ンバを形成することを特徴とするクロスメンバの製造方
法。5. A method for manufacturing a cross member for use in a floor structure of a vehicle body according to claim 1, wherein the cross member has a substantially rectangular concave portion in a plan view with one side opened. Forming a base having a substantially horizontal flange at the upper end edge of the side wall facing the open part among the side walls constituting the concave part, and setting the base in a direction orthogonal to a direction connecting the open part and the brim part. Forming a pair of unit bases by dividing into two, unfolding the unit bases on a plane, and then joining the unit bases via brim portions to form the front cross member; Member manufacturing method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP812197A JP3956412B2 (en) | 1997-01-20 | 1997-01-20 | Floor structure of vehicle body and method of manufacturing cross member used for floor structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP812197A JP3956412B2 (en) | 1997-01-20 | 1997-01-20 | Floor structure of vehicle body and method of manufacturing cross member used for floor structure |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10203423A true JPH10203423A (en) | 1998-08-04 |
JP3956412B2 JP3956412B2 (en) | 2007-08-08 |
Family
ID=11684466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP812197A Expired - Fee Related JP3956412B2 (en) | 1997-01-20 | 1997-01-20 | Floor structure of vehicle body and method of manufacturing cross member used for floor structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3956412B2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0937630A3 (en) * | 1998-02-19 | 2001-08-08 | Honda Giken Kogyo Kabushiki Kaisha | Cross member of an automobile body |
EP1211165A2 (en) * | 2000-12-01 | 2002-06-05 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Vehicle with a floor structure |
JP2003528770A (en) * | 2000-03-24 | 2003-09-30 | アダム オペル アクチエンゲゼルシャフト | Car body base and platform system |
WO2014139659A1 (en) * | 2013-03-13 | 2014-09-18 | Daimler Ag | Cross-member for the base region of a motor vehicle body shell structure, a method for producing a cross-member and a motor vehicle body shell structure |
EP2390164A3 (en) * | 2010-05-29 | 2015-01-21 | Audi AG | Vehicle bodywork in a metal sheet heel area of a passenger cabin |
CN104859723A (en) * | 2014-12-19 | 2015-08-26 | 北汽福田汽车股份有限公司 | Novel rear-floor front-extension-board structure |
CN106428231A (en) * | 2015-08-04 | 2017-02-22 | 本田技研工业株式会社 | Vehicle body structure |
WO2018229375A1 (en) * | 2017-06-15 | 2018-12-20 | Psa Automobiles Sa | Motor vehicle with traction batteries behind the reinforced heel board |
-
1997
- 1997-01-20 JP JP812197A patent/JP3956412B2/en not_active Expired - Fee Related
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0937630A3 (en) * | 1998-02-19 | 2001-08-08 | Honda Giken Kogyo Kabushiki Kaisha | Cross member of an automobile body |
JP2003528770A (en) * | 2000-03-24 | 2003-09-30 | アダム オペル アクチエンゲゼルシャフト | Car body base and platform system |
EP1211165A2 (en) * | 2000-12-01 | 2002-06-05 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Vehicle with a floor structure |
EP1211165A3 (en) * | 2000-12-01 | 2003-01-08 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Vehicle with a floor structure |
US6595581B2 (en) | 2000-12-01 | 2003-07-22 | Dr. Ing. H. C. F. Porsche Ag | Vehicle floor structure and method of making same |
EP2390164A3 (en) * | 2010-05-29 | 2015-01-21 | Audi AG | Vehicle bodywork in a metal sheet heel area of a passenger cabin |
WO2014139659A1 (en) * | 2013-03-13 | 2014-09-18 | Daimler Ag | Cross-member for the base region of a motor vehicle body shell structure, a method for producing a cross-member and a motor vehicle body shell structure |
CN104859723A (en) * | 2014-12-19 | 2015-08-26 | 北汽福田汽车股份有限公司 | Novel rear-floor front-extension-board structure |
CN106428231A (en) * | 2015-08-04 | 2017-02-22 | 本田技研工业株式会社 | Vehicle body structure |
US9902436B2 (en) * | 2015-08-04 | 2018-02-27 | Honda Motor Co., Ltd. | Vehicle body structure |
WO2018229375A1 (en) * | 2017-06-15 | 2018-12-20 | Psa Automobiles Sa | Motor vehicle with traction batteries behind the reinforced heel board |
FR3067689A1 (en) * | 2017-06-15 | 2018-12-21 | Peugeot Citroen Automobiles Sa | MOTOR VEHICLE WITH TRACTION BATTERIES BEHIND THE REINFORCED HEEL BOARD |
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