JPS63247177A - Lower part body structure of vehicle - Google Patents
Lower part body structure of vehicleInfo
- Publication number
- JPS63247177A JPS63247177A JP62080604A JP8060487A JPS63247177A JP S63247177 A JPS63247177 A JP S63247177A JP 62080604 A JP62080604 A JP 62080604A JP 8060487 A JP8060487 A JP 8060487A JP S63247177 A JPS63247177 A JP S63247177A
- Authority
- JP
- Japan
- Prior art keywords
- frames
- cross member
- vehicle
- parts
- frame
- 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
Links
- 239000000725 suspension Substances 0.000 description 8
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000003466 welding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、車両の下部車体構造に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a lower body structure of a vehicle.
従来の車両の下部車体構造としては、車体の左右に配置
され前後方向に延びた閉断面状サイドシルと、はぼコの
字状に形成され該コの字状の開口部が車体前方を向うよ
うに配置されて上記サイドシルに連結されたサスペンシ
ョンメンバと、該サスペンションメンバのコの字状の内
部に配置されたツユエルタンクと、上記サスペンション
メンバに先端を連結されたりャフレームとを有する構造
が既に知られている（実開昭５８−４５１７３号公報）
。The lower body structure of conventional vehicles includes closed-section side sills placed on the left and right sides of the vehicle body and extending in the front-rear direction, and side sills formed in a U-shape such that the U-shaped opening faces toward the front of the vehicle body. A structure is already known which includes a suspension member disposed at the side sill and connected to the side sill, a suspension member disposed inside the U-shaped suspension member, and a frame whose tip is connected to the suspension member. (Utility Model Application Publication No. 58-45173)
.
ところが、上記従来の構造では、ツユエルタンクを囲む
上記サスペンションメンバの剛性は向上されているもの
の、このサスペンションメンバに先端を連結されたりャ
フレームの剛性や、後方からの衝突に対する強度につい
ては、さほど考慮されていない。However, in the conventional structure described above, although the rigidity of the suspension member surrounding the tsuyuel tank is improved, little consideration is given to the rigidity of the frame whose tip is connected to this suspension member and the strength against rear collisions. do not have.
本発明に係る車両の下部車体構造は、上記従来の問題点
を解決するために、車体前後方向に延びるサイドシルを
車体の左右に配設し、各々のサイドシルの後端にリヤフ
レームの前端をそれぞれ連結してこれらリヤフレームを
車体後方に延出させ、両リヤフレーム同士の間に車幅方
向に延びるリヤクロスメンバを架設してペリメータ構造
部を形成したことを特徴としている。In order to solve the above conventional problems, the lower body structure of a vehicle according to the present invention has side sills extending in the longitudinal direction of the vehicle body arranged on the left and right sides of the vehicle body, and the front end of the rear frame attached to the rear end of each side sill. The vehicle is characterized in that these rear frames are connected and extend toward the rear of the vehicle body, and a rear cross member extending in the vehicle width direction is installed between both rear frames to form a perimeter structure.
上記の構成により、車体の左右に配設されたリヤフレー
ムは、その間にリヤクロスメンバが架設されてペリメー
タ構造部を形成しているので、リヤフレーム部の剛性及
び後方からの衝突に対する強度は著しく向上される。よ
って、後方からの衝突による衝撃を受けても後部車室の
容積減損を防止することができることになる。With the above configuration, the rear frames arranged on the left and right sides of the vehicle body have a rear cross member installed between them to form a perimeter structure, so the rigidity of the rear frame part and the strength against collisions from behind are significantly improved. Improved. Therefore, even if the vehicle receives an impact due to a collision from behind, it is possible to prevent the volume loss of the rear passenger compartment.
本発明の一実施例を第１図乃至第３図に基づいて説明す
れば、以下の通りである。An embodiment of the present invention will be described below based on FIGS. 1 to 3.
第１図に示すように、車体の左右位置には、車体前後方
向に延びると共に閉断面状のサイトシルト１が配設され
ている。サイトシルト１の後端部には、断面をコ字形状
に形成されたりャフレーム２・２がそれぞれその前端部
を連結されており、各々のりャフレーム２・２はその後
端部が車体後方に延出されている。リヤフレーム２にお
いて、その前端部上部にはセンターピラー１０との接合
部２ａが形成され、中間部上部にはりャビラ−１１との
接合部２ｂが形成され、さらに、後端部上部にはサスペ
ンションタワー１２との接合部２ｃが形成されている。As shown in FIG. 1, sight silts 1 extending in the longitudinal direction of the vehicle body and having a closed cross section are disposed at left and right positions of the vehicle body. At the rear end of the sight silt 1, the front ends of the rear frames 2, 2 each having a U-shaped cross section are connected, and the rear ends of each of the rear frames 2, 2 extend toward the rear of the vehicle body. has been done. In the rear frame 2, a joint 2a with the center pillar 10 is formed at the upper part of the front end, a joint 2b with the pillar 11 is formed at the upper middle part, and a suspension tower is formed at the upper part of the rear end. 12 is formed.
両リヤフレーム２・２の中間部同士の間には、車幅方向
に延びるクロスメンバ７がその両端部を連結されて架設
されている。また、両リヤフレーム２・２の後端部同士
の間には、車幅方向に延びると共にその断面をコ字形状
に形成され且つ両端に屈曲部３ａ・３ａを有するリヤク
ロスメンバ３がその屈曲部３ａ・３ａを上記リヤフレー
ム２・２の後端部と連結されて架設されている。各屈曲
部３ａとフレーム２との連結部位は、第２図及び第３図
（ａ）（ｂ）に示すように、それぞれの断面コ字形状を
連続した状態で一体的に構成されて所謂ペリメータ構造
部を成している。上記リヤクロスメンバ３本体と屈曲部
３ａとは、各々の上板部同士および上板部同士を互いに
重ねており、また、屈曲部３ａとリヤフレーム２の後端
部も、各々の上板部同士および上板部同士を互いに重ね
て所定の個所をスポット溶接にて接合されている。さら
に、かかる連結部位には、上記リヤクロスメンバ３やリ
ヤフレーム２の内側コ字形状より幾分小さめに形成され
た断面コ字形状の補強部材５が、上記連結部位の曲がり
に沿って多角形をなす如く嵌合されている。そして、こ
れら補強部材５とリヤクロスメンバ３やリヤフレーム２
とが、所定の個所をスポット溶接にて互いに接合される
ことによって閉断面が形成される。ここで、補強部材５
ｂは上記屈曲部３ａとリヤフレーム２の後端とを跨いで
設けられており、また、補強部材５ａはリヤクロスメン
バ３本体と屈曲部３ａとを跨いで設けられている。なお
、リヤフレーム２には、その開口部にタイヤハウスイン
ナーが接合されると閉断面が形成される。上記リヤクロ
スメンバ３の両端近傍であってその車体後方側には、補
強フレーム８・８が配設されている。これら補強フレー
ム８・８、リヤクロスメンバ３、及びリヤフレーム２・
２上には、リヤフロア−９が敷設されている。また、リ
ヤフレーム２・２の下方には、サスペンション支持部材
１３が取り付けられている。A cross member 7 extending in the vehicle width direction is installed between the intermediate portions of the rear frames 2, with both ends connected to each other. Further, between the rear ends of both rear frames 2, 2, there is a rear cross member 3 that extends in the vehicle width direction, has a U-shaped cross section, and has bent portions 3a, 3a at both ends. The parts 3a, 3a are connected to the rear end parts of the rear frames 2, 2. As shown in FIGS. 2 and 3(a) and 3(b), the connecting portion between each bent portion 3a and the frame 2 is integrally formed with a continuous U-shaped cross section, and forms a so-called perimeter. It forms the structural part. The main body of the rear cross member 3 and the bent portion 3a overlap each other, and the upper plate portions overlap each other, and the bent portion 3a and the rear end of the rear frame 2 also overlap each other. The upper plates are stacked on top of each other and are joined at predetermined locations by spot welding. Further, at this connection part, a reinforcing member 5 having a U-shaped cross section, which is formed to be somewhat smaller than the inner U-shape of the rear cross member 3 and the rear frame 2, is attached to a polygonal shape along the curve of the connection part. They are fitted to form a shape. These reinforcing members 5, rear cross member 3 and rear frame 2
are joined to each other at predetermined locations by spot welding, thereby forming a closed cross section. Here, the reinforcing member 5
b is provided to straddle the bent portion 3a and the rear end of the rear frame 2, and the reinforcing member 5a is provided to straddle the main body of the rear cross member 3 and the bent portion 3a. Note that a closed cross section is formed in the rear frame 2 when the tire house inner is joined to the opening thereof. Reinforcement frames 8 are provided near both ends of the rear cross member 3 and on the rear side of the vehicle body. These reinforcing frames 8, 8, rear cross member 3, and rear frame 2,
A rear floor 9 is laid on the floor 2. Furthermore, a suspension support member 13 is attached below the rear frames 2.
本発明に係る車両の下部車体構造は、上述のごとく、リ
ヤフレーム部においてペリメータ構造部が形成されたも
のであるから、リヤフレーム部の剛性を著しく向上する
ことができる。また、これにより、後方からの衝突に対
する強度も著しく向上され、かかる衝突による衝撃を受
けても後部車室の容積減損を防止することができる。な
お、リヤフレーム部における対衝突強度及びフレーム剛
性の調整は、上記補強部材５の板厚を適宜変更すること
により簡単に行うことができる。また、本実施例では、
上記リヤクロスメンバ３の前方にクロスメンバ７を設け
、このクロスメンバ７と上記リヤクロスメンバ３とによ
ってリヤフレーム２・２間において１つの閉じた空間を
形成している。As described above, in the lower body structure of a vehicle according to the present invention, since the perimeter structure is formed in the rear frame, the rigidity of the rear frame can be significantly improved. Furthermore, this significantly improves the strength against rear collisions, and prevents loss of volume in the rear passenger compartment even if the vehicle receives an impact from such a collision. The anti-collision strength and frame rigidity of the rear frame portion can be easily adjusted by appropriately changing the thickness of the reinforcing member 5. Furthermore, in this example,
A cross member 7 is provided in front of the rear cross member 3, and this cross member 7 and the rear cross member 3 form one closed space between the rear frames 2.
よって、かかるリヤフレーム部の剛性は一層向上される
ことになる。Therefore, the rigidity of the rear frame portion is further improved.
本発明に係る車両の下部車体構造は、以上のように、車
体前後方向に延びるサイドシルを車体の左右に配設し、
各々のサイドシルの後端にリヤフレームの前端をそれぞ
れ連結してこれらリヤフレームを車体後方に延出させ、
両リヤフレーム同士の間に車幅方向に延びるリヤクロス
メンバを架設してペリメータ構造部を形成した構成であ
る。よって、リヤフレーム部の剛性及び後方からの衝突
に対する強度は著しく向上され、かかる衝突による衝撃
を受けても後部車室の容積減損を防止することができる
という効果を奏する。As described above, the lower body structure of a vehicle according to the present invention has side sills extending in the longitudinal direction of the vehicle body arranged on the left and right sides of the vehicle body,
The front ends of the rear frames are connected to the rear ends of each side sill, and these rear frames extend toward the rear of the vehicle body.
In this configuration, a rear cross member extending in the vehicle width direction is installed between both rear frames to form a perimeter structure. Therefore, the rigidity of the rear frame portion and its strength against a collision from the rear are significantly improved, and even if the vehicle receives an impact from such a collision, it is possible to prevent the volume loss of the rear passenger compartment.
第１図ないし第３図は本発明の一実施例を示すものであ
って、第１図は車両の下部車体構造を示す斜視図、第２
図はリヤフレームとりャクロスメンバとの連結部位を示
す斜視図、第３図（ａ）はりャフレームとりャクロスメ
ンバとの連結部を示す平面図、同図（ｂ）は同図（ａ）
におけるＸ−Ｘ矢視断面図である。
■はサイドシル、２はリヤフレーム、３はリヤクロスメ
ンバである。
第３図（ａ）1 to 3 show one embodiment of the present invention, in which FIG. 1 is a perspective view showing the lower body structure of a vehicle, and FIG.
The figure is a perspective view showing the connection part between the rear frame and the rear cross member, FIG. 3(a) is a plan view showing the connection part with the rear frame and rear cross member, and FIG.
FIG. ■ is a side sill, 2 is a rear frame, and 3 is a rear cross member. Figure 3(a)
Claims (1)
設し、各々のサイドシルの後端にリヤフレームの前端を
それぞれ連結してこれらリヤフレームを車体後方に延出
させ、両リヤフレーム同士の間に車幅方向に延びるリヤ
クロスメンバを架設してペリメータ構造部を形成したこ
とを特徴とする車両の下部車体構造。1. Side sills extending in the longitudinal direction of the vehicle body are arranged on the left and right sides of the vehicle body, and the front ends of the rear frames are connected to the rear ends of each side sill, respectively, so that these rear frames extend toward the rear of the vehicle body, and the space between the two rear frames is A lower body structure for a vehicle, characterized in that a perimeter structure is formed by installing a rear cross member extending in the vehicle width direction.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080604A JPS63247177A (en) | 1987-03-31 | 1987-03-31 | Lower part body structure of vehicle |
| KR1019880003373A KR910001479B1 (en) | 1987-03-31 | 1988-03-28 | Automotive rear underbody structure |
| EP19880105178 EP0285131B1 (en) | 1987-03-31 | 1988-03-30 | Automotive rear underbody structure |
| DE8888105178T DE3877031T2 (en) | 1987-03-31 | 1988-03-30 | TRAINING THE REAR UNDERFLOOR OF A MOTOR VEHICLE. |
| US07/176,179 US4840424A (en) | 1987-03-31 | 1988-03-31 | Automotive rear underbody structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62080604A JPS63247177A (en) | 1987-03-31 | 1987-03-31 | Lower part body structure of vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63247177A true JPS63247177A (en) | 1988-10-13 |
Family
ID=13722932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62080604A Pending JPS63247177A (en) | 1987-03-31 | 1987-03-31 | Lower part body structure of vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63247177A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5916273B2 (en) * | 1975-08-18 | 1984-04-14 | アサヒホウソウ カブシキガイシヤ | Digital pattern processing device |
-
1987
- 1987-03-31 JP JP62080604A patent/JPS63247177A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5916273B2 (en) * | 1975-08-18 | 1984-04-14 | アサヒホウソウ カブシキガイシヤ | Digital pattern processing device |
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