JPH0450082A - Front floor structure for car body - Google Patents

Front floor structure for car body

Info

Publication number
JPH0450082A
JPH0450082A JP15737090A JP15737090A JPH0450082A JP H0450082 A JPH0450082 A JP H0450082A JP 15737090 A JP15737090 A JP 15737090A JP 15737090 A JP15737090 A JP 15737090A JP H0450082 A JPH0450082 A JP H0450082A
Authority
JP
Japan
Prior art keywords
front side
side member
reinforcement
vehicle body
floor
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.)
Pending
Application number
JP15737090A
Other languages
Japanese (ja)
Inventor
Takeo Mori
健雄 森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP15737090A priority Critical patent/JPH0450082A/en
Publication of JPH0450082A publication Critical patent/JPH0450082A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/154—Independent suspensions with lateral arms the lateral arm having an L-shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
    • B60G2204/1431—Mounting of suspension arms on the vehicle body or chassis of an L-shaped arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/44—Centering or positioning means

Landscapes

  • Body Structure For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

PURPOSE:To increase rigidity by transmitting the load backwardly applied to a lower arm through a closed cross-sectional structure composed of a front side member reinforcement and a front side member to a closed cross-sectional part composed of a floor panel and a floor under reinforcement. CONSTITUTION:A lower arm 10 is formed into about L-shaped form, and a part 18 being supported on the rear side of a car body is mounted to a front side member 13 by a bracket 24. In this case, a front side member reinforcement 34 is fixed to the underside 13A on the rear of the front side member 13, and the projected part 34 of the reinforcement 34 and the lower part 13A on the rear end of the front side member 13 form a closed cross-sectional structure 38. Further, the outside parts 40A, 40B of a floor panel 40 are welded to the flanges 34F, 34G of the reinforcement 34, and a floor under reinforcement 44 is arranged below the projected part 42 of the floor panel 40, and a closed cross-sectional part 46 connecting between the front and the rear of the car body is formed by these floor panel 40 and floor under reinforcement 44.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は車体懸架装置のロアアームをブラケットを介し
て車体側へ支持する車体のフロントフロア構造に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a front floor structure for a vehicle body that supports a lower arm of a vehicle suspension system toward the vehicle body via a bracket.

〔従来の技術〕[Conventional technology]

車体懸架装置のロアアームは車幅方向に沿って延び、車
幅方向内方側が車体側へ揺動可能に軸支されている。こ
のロアアームの車体側への支持部における剛性が操縦安
定性等に影響を与えることは良く知られている。特に操
舵輪である前輪と連結されるロアアームでは前記剛性を
高めることが一般的に操縦安定性等を向上することから
、ロアアームを支持するための種々のフロントフロア構
造が提案されている。The lower arm of the vehicle body suspension system extends along the vehicle width direction, and its inner side in the vehicle width direction is pivotably supported toward the vehicle body. It is well known that the rigidity of the support portion of the lower arm toward the vehicle body affects steering stability and the like. In particular, increasing the rigidity of the lower arm connected to the front wheel, which is the steered wheel, generally improves steering stability, etc., and therefore various front floor structures for supporting the lower arm have been proposed.

例えば、本発明者によって特願昭６１−１３１５３５号
のフロントフロア構造が提案されている。For example, a front floor structure has been proposed by the present inventor in Japanese Patent Application No. 131535/1982.

第７図に示される如く、このフロントフロア構造におい
ては、ロアアーム７０の後端部７０Ａはダッシュ下部の
クロスメンバ７２の下面７２Ａ及びフロアアンダリイン
フオース７４の二点で支持されたブラケット７６により
、支持されている。As shown in FIG. 7, in this front floor structure, the rear end 70A of the lower arm 70 is supported by a bracket 76 at two points: the lower surface 72A of the cross member 72 at the bottom of the dash and the floor under-inforcement 74. Supported.

かかる構造では、走行中にタイヤから入力された車体後
方への荷重Ｆは、クロスメンバ７２の下面７２Ａ及びフ
ロアアンダリインフオース７４の平板部７４Ａに伝達さ
れるだけであり、この荷重Ｆを、特にフロアアンダリイ
ンフオース７４とフロアパン７６とで形成される車体前
後方向へ連通する閉断面部７８全体で受けることが出来
ない。よって、ロアアーム７０に加わる後方への荷重Ｆ
を車体の骨格部材に効果的に伝達できないという不具合
があった。In this structure, the load F applied to the rear of the vehicle body from the tires during driving is only transmitted to the lower surface 72A of the cross member 72 and the flat plate portion 74A of the floor under reinforcement 74, and this load F is In particular, the entire closed section 78 formed by the floor under-inforcement 74 and the floor pan 76 and communicating in the longitudinal direction of the vehicle body cannot receive it. Therefore, the rearward load F applied to the lower arm 70
There was a problem in that it could not be effectively transmitted to the frame members of the vehicle body.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

本発明は上記事実を考慮し、ロアアームに加わる後方へ
の荷重をフロアアンダリインフオースとフロアパンによ
って形成される閉断面部に効果的に伝達できる車体のフ
ロントフロア構造を得ることを目的としている。The present invention takes the above-mentioned facts into account, and aims to provide a front floor structure for a vehicle body that can effectively transmit the rearward load applied to the lower arm to the closed section formed by the floor underlayment and the floor pan. .

〔課題を解決するた約の手段〕[A means of saving to solve problems]

本発明は、車体懸架装置のロアアームをブラケットを介
してフロントサイドメンバの後部下面へ揺動可能に支持
する車体のフロントフロア構造において、フロアパンの
下面に設けられフロアパンとで車体前後方向へ連通する
閉断面部を形成すると共に前端部が前記フロントサイド
メンバの後部に連結されたフロアアンダリインフオース
と、前記フロントサイドメンバの前記ブラケット固着部
に設けられ前記フロントサイドメンバとで車体前後方向
へ連通しその後端部が前記閉断面部と連結した閉断面構
造を形成するフロントサイドメンバリインフォースと、
を備えたことを特徴としている。The present invention relates to a front floor structure of a vehicle body in which a lower arm of a vehicle suspension system is swingably supported to the rear lower surface of a front side member via a bracket, which is provided on the lower surface of the floor pan and communicates with the floor pan in the longitudinal direction of the vehicle body. A floor under reinforcement, which forms a closed cross-sectional part that connects to the front side member and whose front end is connected to the rear part of the front side member, and the front side member, which is provided at the bracket fixing part of the front side member, extends in the longitudinal direction of the vehicle body. a front side member reinforcement that is in communication and forms a closed cross-section structure whose rear end is connected to the closed cross-section portion;
It is characterized by having the following.

〔作　用〕[For production]

上記構成の本発明では、フロントサイドメンバ′のブラ
ケット固着部にフロントサイドメンバリインフォースが
設けられ、このフロントサイドメンバリインフォースと
フロントサイドメンバとで車体前後方向に連通ずる閉断
面構造が形成される。In the present invention having the above configuration, the front side member reinforcement is provided at the bracket fixing portion of the front side member', and the front side member reinforcement and the front side member form a closed cross-sectional structure communicating in the longitudinal direction of the vehicle body.

またこの閉断面構造は、フロアパンとフロアアンダリイ
ンフォースとで形成される車体前後方向へ連通する閉断
面部と連結する。従って、走行中にタイヤから車体後方
方向へ向けてロアアームに荷重が作用した場合には、ロ
アアームに加わる後方への荷重は、フロントサイドメン
バリインフォースとフロントサイドメンバとで形成され
た閉断面構造を介して、フロアパントとフロアアンダリ
インフオースとで形成される閉断面部に効果的に伝達さ
れる。Further, this closed cross-section structure is connected to a closed cross-section portion formed by the floor pan and the floor under reinforcement and communicating in the longitudinal direction of the vehicle body. Therefore, when a load is applied to the lower arm from the tires toward the rear of the vehicle while driving, the rearward load applied to the lower arm is transmitted through the closed cross-section structure formed by the front side member reinforcement and the front side member. The energy is effectively transmitted to the closed section formed by the floor pant and the floor underlayment.

〔実施例〕〔Example〕

本発明の一実施例を第１図〜第６図に従って説明する。 An embodiment of the present invention will be described with reference to FIGS. 1 to 6.

なお、図中矢印ＦＲは車体前方方向を、矢印ＩＮは車体
内側方向を、矢印ＵＰは車体上方方向を示す。In the figure, arrow FR indicates the forward direction of the vehicle body, arrow IN indicates the inside direction of the vehicle body, and arrow UP indicates the upward direction of the vehicle body.

第６図に示される如く、ロアアーム１０は略り型形状と
されており、車体前方側の被支持部１２と車体後方側の
被支持部１８とが互いに独立して車体側へ支持されてい
る。車体前方側の被支持部１２はブツシュ１４及びボル
ト１６を介してフロントサイドメンバ１３へ軸支されて
いる。この支持構造は従来と同様である。車体後方側の
被支持部１８には軸部２Ｇにブツシュ２６が嵌合されて
おり、このブツシュ２６がフロントサイドメンバ１３の
後端下部１３Ａへ取り付けられたブラケット２４に支持
されている。As shown in FIG. 6, the lower arm 10 has a generally oval shape, and a supported portion 12 on the front side of the vehicle body and a supported portion 18 on the rear side of the vehicle body are supported toward the vehicle body independently of each other. . The supported portion 12 on the front side of the vehicle body is pivotally supported by a front side member 13 via a bush 14 and a bolt 16. This support structure is the same as the conventional one. A bush 26 is fitted onto the shaft portion 2G of the supported portion 18 on the rear side of the vehicle body, and this bush 26 is supported by a bracket 24 attached to the lower rear end 13A of the front side member 13.

ロアアーム１０は、ボルト１６及び軸部２０の夫々の軸
線を含み、これら軸線と一直線をなす揺動軸線２２を軸
として揺動可能となっている。The lower arm 10 includes the axes of the bolt 16 and the shaft portion 20, and is swingable about a swing axis 22 that is in line with these axes.

前記ブラケット２４にはブツシュ２６を支持するための
略Ｕ形断面の凹部２４Ａが形成されているとともに、凹
部２４Ａを挟んで車幅方向の両側に取付部２４Ｂが形成
されている。ブラケット２４の取付部２４Ｂには、夫々
ボルト３０の通し孔２８が形成されている。The bracket 24 is formed with a recess 24A having a substantially U-shaped cross section for supporting the bush 26, and mounting portions 24B are formed on both sides of the recess 24A in the vehicle width direction. A through hole 28 for a bolt 30 is formed in each mounting portion 24B of the bracket 24.

第１図に示される如く、ブラケット２４に車体下方から
上方へ向けて挿入されたボルト３０は、フロントサイド
メンバ１３の後部下面１３Ａに穿設された通し孔（図示
省略）を介して、フロントサイドメンバリインフォース
３４に固着されたナツト３６に螺合されている。As shown in FIG. 1, the bolt 30 inserted into the bracket 24 from below to the top of the vehicle body is inserted into the front side member 13 through a through hole (not shown) formed in the rear lower surface 13A of the front side member 13 It is screwed into a nut 36 fixed to the member reinforcement 34.

第２図及び第３図に示される如く、フロントサイドメン
バリインフォース３４の前部の車幅方向中央部には、上
方へ向けて凸部３４Ａが形成されており、この凸部３４
Ａは後方へ向かってフロントサイドメンバリインフォー
ス３４の略中央部まで延設されている。As shown in FIGS. 2 and 3, a convex portion 34A is formed upward in the center portion of the front side member reinforcement 34 in the vehicle width direction.
A extends rearward to approximately the center of the front side member reinforcement 34.

第４図に示される如く、フロントサイドメンバリインフ
ォース３４の凸部３４Ａを挟む部分は夫々取付部３４Ｂ
、３４Ｃとされており、これらの取付部３４Ｂ、３４Ｃ
の上面の略中央部には、夫々ナンド３６が固着されてい
る。またフロントサイドメンバ１３の後端の車両前後方
向から見た断面形状は、開口部を上方向けた口字状とさ
れており、底面１３Ｂにフロントサイドメンバリインフ
ォース３４の取付部３４Ｂ、３４Ｃが夫々車体上下方向
上側から溶着されている。また、底面１３Ｂの車幅方向
端部から立設された脚部１３Ｃ１１３Ｄの上端部には、
車幅方向外側へ向けて夫々フランジ１３Ｅ、１３Ｆが設
けれている。As shown in FIG. 4, the parts that sandwich the convex part 34A of the front side member reinforcement 34 are the mounting parts 34B, respectively.
, 34C, and these mounting parts 34B, 34C
A NAND 36 is fixed to approximately the center of the upper surface of each of the two. In addition, the cross-sectional shape of the rear end of the front side member 13 when viewed from the longitudinal direction of the vehicle is in the shape of an opening facing upward, and mounting portions 34B and 34C of the front side member reinforcement 34 are attached to the bottom surface 13B of the vehicle body. Welded from above in the vertical direction. In addition, at the upper end of the leg 13C113D that stands up from the end of the bottom surface 13B in the vehicle width direction,
Flanges 13E and 13F are provided facing outward in the vehicle width direction, respectively.

従って、第１図及び第４図に示される如（、フロントサ
イドメンバリインフォース３４の凸部３４Δとフロント
サイドメンバ１３の後端下部１３Ａとで車体前後方向へ
連通する閉断面構造３８が形成されている。Therefore, as shown in FIGS. 1 and 4, a closed cross-sectional structure 38 is formed in which the convex portion 34Δ of the front side member reinforcement 34 and the rear end lower portion 13A of the front side member 13 communicate in the longitudinal direction of the vehicle body. There is.

第５図に示される如く、フロントサイドメンバリインフ
ォース３４の後部の車体前後方向から見た断面形状は、
開口部を下方へ向けた口字状とされており、両脚部３４
Ｄ、３４Ｅの下端部には夫々車幅方向外側へ向けてフラ
ンジ３４Ｆ、３４Ｇが設けられている。As shown in FIG. 5, the cross-sectional shape of the rear part of the front side member reinforcement 34 when viewed from the longitudinal direction of the vehicle body is as follows:
It has a mouth shape with the opening facing downward, and both legs 34
Flanges 34F and 34G are provided at the lower end portions of D and 34E, respectively, facing outward in the vehicle width direction.

第２図及び第３図に示される如く、これらのフランジ３
４Ｆ、３４Ｇの前部は夫々、上方へ傾斜されている。ま
たフロアパン４０の凸部４２は車両前後方向に長手状と
されている。As shown in FIGS. 2 and 3, these flanges 3
The front portions of 4F and 34G are each inclined upward. Further, the convex portion 42 of the floor pan 40 is elongated in the longitudinal direction of the vehicle.

第５図に示される如く、フロアパン４０の凸部４２の車
両前後方向から見た断面形状は、開口部を下方へ向けた
口字状とされている。また凸部４２の前部には、フロン
トサイドメンバリインフォース３４のフランジ３４Ｆ、
３４Ｇが、夫々フロアパン４０の凸部４２の車幅方向外
側部４ＯＡ、４０Ｂに下方から溶着されている。As shown in FIG. 5, the cross-sectional shape of the convex portion 42 of the floor pan 40 when viewed from the front-rear direction of the vehicle is in the shape of an opening with the opening facing downward. Further, in the front part of the convex part 42, a flange 34F of the front side member reinforcement 34,
34G are welded from below to the outer side portions 4OA and 40B in the vehicle width direction of the convex portion 42 of the floor pan 40, respectively.

第１図及び第２図に示される如く、フロアパン４０の凸
部４２の車体上下方向下側には、凸部４２に沿って車体
前後方向に長手状とされたフロアアンダリインフォース
４４が配置されている。フロアアンダリインフオース４
４の車体前後方向から見た断面形状は、開口部を上方へ
向けた口字状とされており、フロアアンダリインフオー
ス４４の両脚部４４Ａ、４４’Ｂの上端部には、車幅方
向外側へ向けて夫々フランジ４４Ｃ１４４Ｄが設けられ
ている。これらのフランジ４４Ｃ，４４Ｄはフロアパン
４０の凸部４２の車幅方向外側部４０Ａ、４０Ｂに車体
上下方向下方から溶着されている。As shown in FIGS. 1 and 2, a floor under reinforcement 44 that is elongated in the longitudinal direction of the vehicle body is disposed below the convex portion 42 of the floor pan 40 in the vertical direction of the vehicle body. ing. Floor under reinforcement 4
The cross-sectional shape of No. 4 seen from the longitudinal direction of the vehicle body is in the shape of an opening facing upward, and the upper ends of both leg portions 44A and 44'B of the floor under reinforcement 44 have a cross-sectional shape in the vehicle width direction. A flange 44C144D is provided toward the outside. These flanges 44C, 44D are welded to the vehicle width direction outer parts 40A, 40B of the convex part 42 of the floor pan 40 from below in the vehicle body vertical direction.

従って、フロアパン４０の凸部４２とフロアアンダリイ
ンフォース４４とで車体前後方向に連通ずる閉断面部４
６が形成されている。Therefore, the closed cross-section portion 4 communicates with the convex portion 42 of the floor pan 40 and the floor under reinforcement 44 in the longitudinal direction of the vehicle body.
6 is formed.

第５図に示される如く、フロアアンダリインフォース４
４の前端部では、フロアアンダリインフオース４４のフ
ランジ４４Ｃ，４４Ｄとフロアパン４０の凸部４２の車
幅方向外側部４ＯＡ、４０Ｂとの間に、フロントサイド
メンバリインフォース３４のフランジ３４Ｆ、３４Ｇ及
びフロントサイドメンバ１３のフランジ１３Ｅ、１３Ｆ
が溶着されている。従って、閉断面部４６は、前方へ延
び、フロントサイドメンバリインフォース３４の凸部３
４Ａとフロントサイドメンバ１３の後端下部１３Ａとで
形成された閉断面構造３８と連結している。As shown in Fig. 5, floor under reinforcement 4
At the front end of the front side member reinforcement 34, the flanges 34F, 34G and Flanges 13E and 13F of front side member 13
is welded. Therefore, the closed cross-section portion 46 extends forward, and the convex portion 3 of the front side member reinforcement 34
4A and a closed cross-section structure 38 formed by the rear end lower part 13A of the front side member 13.

次に、本実施例の作用に付いて説明する。Next, the operation of this embodiment will be explained.

上記の通り構成された本実施例の構造では、ロアアーム
１０に作用した後方への荷重Ｆは、ブツシュ２６を介し
てブラケット２４へ伝達される。In the structure of this embodiment configured as described above, the rearward load F acting on the lower arm 10 is transmitted to the bracket 24 via the bush 26.

さらに、荷重Ｆは、フロントサイドメンバリインフォー
ス３４の凸部３４Ａとフロントサイドメンバ１３の後端
下部１３Ａとで形成された閉断面構造３８を介して、フ
ロアパン４０の凸部４２とフロアアンダリインフオース
４４とで形成される閉断面部４６へ伝達される。Furthermore, the load F is applied to the convex portion 42 of the floor pan 40 and the floor under-infrastructure via the closed cross-section structure 38 formed by the convex portion 34A of the front side member reinforcement 34 and the rear end lower portion 13A of the front side member 13. It is transmitted to the closed cross-section portion 46 formed by the aus 44.

従って、ロアアーム１０に作用した後方への荷重Ｆは閉
断面構造３８によって、車体の骨格部材としての閉断面
部４６に効果的に伝達される。Therefore, the rearward load F acting on the lower arm 10 is effectively transmitted by the closed cross-section structure 38 to the closed cross-section portion 46 as a frame member of the vehicle body.

また、本実施例においては、フロアパン４０に凸部４２
を設けただ約、ロアアーム１０の揺動軸線２２が、閉断
面部４６の軸線と略一致する。従って、ロアアーム１０
に作用した後方への荷重Ｆをフロアパン４０の面内剛性
で受けることができ、フロントサイドメンバ１３の後部
の変形を防止しできる。この結果フロントサイドメンバ
１３の前部の軸圧縮変形が生じ易くなり車体のエネルギ
ー吸収力が向上する。Further, in this embodiment, the convex portion 42 is provided on the floor pan 40.
As long as , the swing axis 22 of the lower arm 10 substantially coincides with the axis of the closed cross-section portion 46 . Therefore, lower arm 10
The in-plane rigidity of the floor pan 40 can absorb the rearward load F acting on the front side member 13, thereby preventing deformation of the rear part of the front side member 13. As a result, axial compression deformation of the front portion of the front side member 13 is likely to occur, and the energy absorption ability of the vehicle body is improved.

なお、上記実施例では略し型形状のロアアーム１０のブ
ラケット２４へ適用したが、他の形状のロアアームを支
持する場合にも本発明は適用可能である。In the above embodiment, the present invention is applied to the bracket 24 of the lower arm 10 having an abbreviated shape, but the present invention is also applicable to supporting lower arms having other shapes.

〔発明の効果〕〔Effect of the invention〕

本発明は上記の構成としたので、ロアアームに加わる後
方への荷重をフロアアンダリインフォースとフロアパン
によって形成される閉断面部に効果的に伝達できるとい
う優れた効果を有する。Since the present invention has the above configuration, it has the excellent effect that the rearward load applied to the lower arm can be effectively transmitted to the closed section formed by the floor under reinforcement and the floor pan.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明に係る車体のフロントフロア構造の一実
施例を示す車体横方向から見た断面図、第２図は本発明
に係る車体のフロントフロア構造の一実施例を示す車体
後方上側から見た斜視図、第３図は第２図のフロントサ
イドメンバリインフォースを示す車体後方上側から見た
斜視図、第４図は第１図ＩＶ−１’Ｖ線断面図、第５図
は第１図Ｖ−Ｖ線断面図、第６図は本実施例に適用され
るロアアームの主要部分を示す分解斜視図、第７図は従
来構造を示す車体横方向から見た断面図である。 １０・・・ロアアーム、 １３・・・フロントサイドメンバ、 ２４・・・ブラケット、 ３４・・・フロントサイドメンバリインフォース、３８
・・・閉断面構造、 ４０・・・フロアパン、 ４２・・・凸部、 ４４・・・フロアアンダリイーンフォース、４６・・・
閉断面部。 １０：ロアアーム １３、フロントサイドメンバ ２４゛フ゛ラケツＦ ３４°リイン７オーＺ ３８°Ｐｔ’ｌ断面構造 ４０．７０７ハ゛ン ４２８音β ４４７０ア？〉ダｆノイ〉７オーヌ ４６：閉ｔ！ｒｒ面含μ 第 第 図 図 Ｐ Ｐ 第 第 第 ア 図 図 図 ＰFIG. 1 is a sectional view from the side direction of the vehicle body showing an embodiment of the front floor structure of a vehicle body according to the present invention, and FIG. 2 is a rear upper side of the vehicle body showing an embodiment of the front floor structure of the vehicle body according to the present invention. 3 is a perspective view from the rear upper side of the vehicle body showing the front side member reinforcement in FIG. 2, FIG. 4 is a sectional view taken along line IV-1'V in FIG. FIG. 1 is a cross-sectional view taken along the line V-V, FIG. 6 is an exploded perspective view showing the main parts of the lower arm applied to this embodiment, and FIG. 7 is a cross-sectional view of the conventional structure as seen from the lateral direction of the vehicle body. 10...Lower arm, 13...Front side member, 24...Bracket, 34...Front side member reinforcement, 38
...Closed section structure, 40...Floor pan, 42...Protrusion, 44...Floor under reinforcement, 46...
Closed section. 10: Lower arm 13, front side member 24 frame F 34° rein 7 oh Z 38° Pt'l cross-sectional structure 40.707 h 428 sound β 4470 a? 〉Da f Noi〉7 Ohne 46: Close t! rr surface included μ Figure P P Figure A Figure P

Claims (1)

【特許請求の範囲】[Claims] （１）車体懸架装置のロアアームをブラケットを介して
フロントサイドメンバの後部下面へ揺動可能に支持する
車体のフロントフロア構造において、フロアパンの下面
に設けられフロアパンとで車体前後方向へ連通する閉断
面部を形成すると共に前端部が前記フロントサイドメン
バの後部に連結されたフロアアンダリインフオースと、
前記フロントサイドメンバの前記ブラケット固着部に設
けられ前記フロントサイドメンバとで車体前後方向へ連
通しその後端部が前記閉断面部と連結した閉断面構造を
形成するフロントサイドメンバリインフォースと、を備
えたことを特徴とする車体のフロントフロア構造。(1) In a front floor structure of a vehicle body in which the lower arm of the vehicle suspension system is swingably supported to the rear lower surface of the front side member via a bracket, the lower arm is provided on the lower surface of the floor pan and communicates with the floor pan in the longitudinal direction of the vehicle body. a floor under reinforcement forming a closed section and having a front end connected to a rear portion of the front side member;
A front side member reinforcement is provided at the bracket fixing portion of the front side member and communicates with the front side member in the longitudinal direction of the vehicle body, forming a closed cross-section structure with a rear end connected to the closed cross-section portion. The front floor structure of the car body is characterized by:
JP15737090A 1990-06-15 1990-06-15 Front floor structure for car body Pending JPH0450082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15737090A JPH0450082A (en) 1990-06-15 1990-06-15 Front floor structure for car body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15737090A JPH0450082A (en) 1990-06-15 1990-06-15 Front floor structure for car body

Publications (1)

Publication Number Publication Date
JPH0450082A true JPH0450082A (en) 1992-02-19

Family

ID=15648173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15737090A Pending JPH0450082A (en) 1990-06-15 1990-06-15 Front floor structure for car body

Country Status (1)

Country Link
JP (1) JPH0450082A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09207823A (en) * 1996-02-01 1997-08-12 Toyota Motor Corp Front part structure for car body
JPH09221061A (en) * 1996-02-10 1997-08-26 Mercedes Benz Ag Chassis supporting beam and manufacture thereof
KR100507527B1 (en) * 2002-11-20 2005-08-17 현대자동차주식회사 Lower arm mounting plate structure
JP2023103537A (en) * 2022-01-14 2023-07-27 本田技研工業株式会社 vehicle front structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09207823A (en) * 1996-02-01 1997-08-12 Toyota Motor Corp Front part structure for car body
JPH09221061A (en) * 1996-02-10 1997-08-26 Mercedes Benz Ag Chassis supporting beam and manufacture thereof
KR100507527B1 (en) * 2002-11-20 2005-08-17 현대자동차주식회사 Lower arm mounting plate structure
JP2023103537A (en) * 2022-01-14 2023-07-27 本田技研工業株式会社 vehicle front structure
US12012147B2 (en) 2022-01-14 2024-06-18 Honda Motor Co., Ltd. Vehicle front portion structure

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