JP3333719B2 - Body frame structure - Google Patents
Body frame structureInfo
- Publication number
- JP3333719B2 JP3333719B2 JP23682697A JP23682697A JP3333719B2 JP 3333719 B2 JP3333719 B2 JP 3333719B2 JP 23682697 A JP23682697 A JP 23682697A JP 23682697 A JP23682697 A JP 23682697A JP 3333719 B2 JP3333719 B2 JP 3333719B2
- Authority
- JP
- Japan
- Prior art keywords
- body frame
- upper wall
- frame member
- extruded pipe
- cross
- 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.)
- Expired - Fee Related
Links
Landscapes
- Body Structure For Vehicles (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は，左右の前輪の車軸
を回避すべく車体フレームの前部に存する左右のキック
アップ部が，Ａｌ合金製押出しパイプを弓形に折曲げて
なるサイドフレーム部材を各々備える車体フレーム構造
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle for left and right front wheels.
Left and right kicks at the front of the body frame to avoid
The upper part is formed by bending an extruded aluminum alloy pipe into an arc shape
Body frame structure provided with respective side frame members .
【０００２】[0002]
【従来の技術】従来，乗用車用車体フレームにおいて，
左右の前輪側のキックアップ部を構成するフレーム部材
として，Ａｌ合金よりなる横断面円形の押出しパイプを
弓形に折曲げたものが知られている。2. Description of the Related Art Conventionally, in a vehicle body frame,
2. Description of the Related Art As a frame member constituting a kick-up portion on the left and right front wheels, an extruded pipe made of an Al alloy and having a circular cross section and bent in an arc shape is known.
【０００３】[0003]
【発明が解決しようとする課題】車両の正面衝突等によ
りフレーム部材の前端部に衝突荷重が作用すると，その
衝突荷重を吸収すべくフレーム部材の長手方向略中央部
には，その曲がり度合を強めるような曲がりが生じる。
この場合，曲がり部の外周面側には比較的大きな伸びが
発生し，またＡｌ合金はその特性上伸びが小さい，とい
うこともあって，前記外周面側に破断が発生する。この
ような破断は衝突エネルギ吸収効率を著しく低下させる
ことになるので極力避けなければならない。When a collision load is applied to the front end of the frame member due to a frontal collision of the vehicle or the like, the degree of bending is increased at a substantially central portion in the longitudinal direction of the frame member so as to absorb the collision load. Such bending occurs.
In this case, relatively large elongation occurs on the outer peripheral surface side of the bent portion, and breakage occurs on the outer peripheral surface side because the elongation of the Al alloy is small due to its characteristics. Such breakage significantly reduces the efficiency of absorbing collision energy and must be avoided as much as possible.
【０００４】[0004]
【課題を解決するための手段】本発明は，左右のサイド
フレーム部材に特定の構造を具備させることによって前
記伸びを大いに抑制し得るようにした前記車体フレーム
構造を提供することを目的とする。SUMMARY OF THE INVENTION The present invention is directed to a left and right side.
The vehicle body frame in which the elongation can be greatly suppressed by providing the frame member with a specific structure.
The purpose is to provide a structure .
【０００５】前記目的を達成するために請求項１の発明
は，左右の前輪の車軸を回避すべく車体フレームの前部
に存する左右のキックアップ部が，Ａｌ合金製押出しパ
イプを弓形に折曲げてなるサイドフレーム部材を各々備
える車体フレーム構造であって，前記押出しパイプが，
帯状上壁と，その上壁に対向する帯状下壁と，前記上壁
の左右両側縁および前記下壁の左右両側縁間をそれぞれ
繋ぐと共に横断面Ｖ字状をなす左右一対の側壁とよりな
ることを特徴としている。[0005] To achieve the above object, the invention of claim 1
Is the front of the body frame to avoid the left and right front wheel axles.
The left and right kick-up sections in the
Each side frame member is formed by bending the IP
Body frame structure, wherein the extruded pipe is
It comprises a band-shaped upper wall, a band-shaped lower wall opposed to the upper wall, and a pair of left and right side walls forming a V-shaped cross section while connecting the left and right side edges of the upper wall and the left and right side edges of the lower wall. It is characterized by:
【０００６】前記構成において，例えば車両の正面衝突
等により，弓形のサイドフレーム部材の前端部に衝突荷
重が作用すると，その衝突荷重を吸収すべく該サイドフ
レーム部材の長手方向略中央部においては，下壁に作用
する圧縮力に起因してその下壁を上壁側に突上げる力が
発生する。その結果，両側壁の折曲げ部がその折曲げ角
を減少させるように圧縮変形し，この圧縮変形量に応じ
て上壁の伸びが抑制される。[0006] In the above configuration, for example by frontal collision of the vehicle, the collision load to the front end of the arcuate side frame members act, the order to absorb the collision load Saidofu
At a substantially central portion in the longitudinal direction of the frame member, a force that pushes the lower wall toward the upper wall is generated due to the compressive force acting on the lower wall. As a result, the bent portions of both side walls are compressed and deformed so as to reduce the bending angle, and the elongation of the upper wall is suppressed according to the amount of the compressed deformation.
【０００７】これにより上壁の伸びを，その構成材料で
あるＡｌ合金が持つ限界値内にとどめて，その破断を回
避し，衝突エネルギ吸収効率を大いに高めることが可能
である。As a result, it is possible to keep the elongation of the upper wall within the limit value of the Al alloy, which is a constituent material thereof, to avoid the breakage, and to greatly improve the collision energy absorption efficiency.
【０００８】また請求項２の発明は，請求項１の発明の
前記特徴に加えて，前記押出しパイプが横断面六角形を
なすことを特徴とし，さらに請求項３の発明は，請求項
１の発明の前記特徴に加えて，前記押出しパイプが横断
面つづみ形をなすことを特徴とし，さらにまた請求項４
の発明は，請求項１の発明の前記特徴に加えて，左右の
サイドフレーム部材の前端部を支持するフロントクロス
部材を備えることを特徴とする。 [0008] The invention of claim 2 is the invention of claim 1.
In addition to the above features, the extruded pipe has a hexagonal cross section
The invention of claim 3 is characterized in that
In addition to the features of the first aspect, the extruded pipe is traversed.
5. The method according to claim 4, wherein the surface has a continuous shape.
The invention of claim 1 is characterized in that, in addition to the features of the invention of claim 1,
Front cross that supports the front end of the side frame member
It is characterized by comprising a member.
【０００９】[0009]
【発明の実施の形態】図１において，乗用車用車体フレ
ーム１は，Ａｌ合金よりなる種々のフレーム部材および
継手部材を用いて組立てられている。その車体フレーム
１の前部において，左右の前輪の車軸２を回避すべく一
対のキックアップ部３が存在する。各キックアップ部３
は，後端部をフロア部材４に固定されて前方へ伸びるフ
レーム部材としてのサイドフレーム部材５と，そのサイ
ドフレーム部材５の前端部を支持するフロントクロス部
材６とを備えている。図示例では，１つのフロントクロ
ス部材６が左右のキックアップ部３に併用されている。1, a vehicle body frame 1 for a passenger car is assembled using various frame members and joint members made of an Al alloy. At the front of the body frame 1, there is a pair of kick-up portions 3 to avoid the axles 2 of the left and right front wheels. Each kick-up part 3
Includes a side frame member 5 as a frame member having a rear end fixed to the floor member 4 and extending forward, and a front cross member 6 supporting a front end of the side frame member 5. In the illustrated example, one front cross member 6 is used for the left and right kick-up portions 3.
【００１０】各サイドフレーム部材５は，図２に明示す
るようにＡｌ合金製押出しパイプｐを弓形に折曲げたも
のである。その押出しパイプｐは横断面六角形をなすも
ので，横断面水平な帯状上壁７と，その上壁７に対向す
る横断面水平な帯状下壁８と，上壁７の左右両側縁およ
び下壁８の左右両側縁間をそれぞれ繋ぐと共に横断面Ｖ
字形をなす一対の側壁９とよりなる。As shown in FIG. 2, each side frame member 5 is formed by bending an extruded pipe p made of an Al alloy into an arc shape. The extruded pipe p has a hexagonal cross section, and has a horizontal band-shaped upper wall 7, a horizontal band-shaped lower wall 8 opposed to the upper wall 7, right and left side edges of the upper wall 7 and a lower wall. The right and left sides of the wall 8 are connected to each other, and the cross section V
It comprises a pair of side walls 9 forming a character shape.
【００１１】前記構成において，車両の正面衝突等によ
りサイドフレーム部材５の前端部に衝突荷重が作用する
と，その衝突荷重を吸収すべくサイドフレーム部材５の
長手方向略中央部ｃにおいては，図３（ａ）に示すよう
に下壁８に作用する圧縮力に起因してその下壁８を上壁
７側に突上げる力Ｆが発生する。その結果，図３（ｂ）
に示すように両側壁９の折曲げ部１０がその折曲げ角θ
を減少させるように圧縮変形し，この圧縮変形量に応じ
て上壁７の伸びが抑制される。In the above structure, when a collision load is applied to the front end of the side frame member 5 due to a frontal collision of the vehicle or the like, a substantially central portion c in the longitudinal direction of the side frame member 5 in order to absorb the collision load is shown in FIG. As shown in (a), a force F that pushes the lower wall 8 toward the upper wall 7 is generated due to the compressive force acting on the lower wall 8. As a result, FIG.
As shown in FIG. 7, the bent portions 10 of the side walls 9 have the bending angle θ.
, And the elongation of the upper wall 7 is suppressed according to the amount of compressive deformation.
【００１２】これにより上壁７の伸びを，その構成材料
であるＡｌ合金が持つ限界値内にとどめて，その破断を
回避し，衝突エネルギ吸収効率を大いに高めることが可
能である。As a result, it is possible to keep the elongation of the upper wall 7 within the limit value of the Al alloy which is a constituent material thereof, to avoid the breakage, and to greatly improve the collision energy absorption efficiency.
【００１３】図４に示すように，押出しパイプｐ，した
がってサイドフレーム部材５は横断面つづみ形をなすよ
うに成形されていてもよい。この場合，両側壁９の折曲
げ部１０がその折曲げ角θを減少させるように圧縮変形
する間，両折曲げ部１０の衝突が生じないようにサイド
フレーム部材５の設計がなされる。As shown in FIG. 4, the extruded pipe p and thus the side frame member 5 may be formed so as to form a cross-section. In this case, the side frame member 5 is designed so that the collision between the two bent portions 10 does not occur while the bent portions 10 of the both side walls 9 compressively deform so as to reduce the bending angle θ.
【００１４】前記サイドフレーム部材５は後輪側のキッ
クアップ部にも適用される。The side frame member 5 is also applied to a kick-up portion on the rear wheel side.
【００１５】[0015]
【発明の効果】本発明によれば，Ａｌ合金製押出しパイ
プを弓形に折曲げてなるサイドフレーム部材において，
その押出しパイプが，帯状上壁と，その上壁に対向する
帯状下壁と，前記上壁の左右両側縁および前記下壁の左
右両側縁間をそれぞれ繋ぐと共に横断面Ｖ字状をなす左
右一対の側壁とよりなるので，車両の正面衝突等によ
り，弓形のサイドフレーム部材の前端部に衝突荷重が作
用すると，その衝突荷重を吸収すべく該サイドフレーム
部材の長手方向略中央部においては，下壁に作用する圧
縮力に起因してその下壁を上壁側に突上げる力が発生し
て，上壁の伸びを抑制するように圧縮変形が生じ，これ
により，該上壁の伸びを，その構成材料であるＡｌ合金
が持つ限界値内にとどめることができるから，その破断
を回避して，衝突エネルギ吸収効率を大いに高めること
が可能である。 According to the present invention, an extruded pie made of Al alloy is provided.
In the side frame member which is formed by bending the
The extruded pipe faces the upper strip and the upper wall
The lower band, the left and right side edges of the upper wall, and the left of the lower wall
The left side, which connects the right side edges and forms a V-shaped cross section
Because it consists of a pair of right side walls, it may
Impact load is applied to the front end of the bow-shaped side frame member.
The side frame to absorb the impact load.
At the approximate center of the member in the longitudinal direction, the pressure acting on the lower wall
The force that pushes the lower wall toward the upper wall due to the contraction force is generated
As a result, compressive deformation occurs to suppress the elongation of the upper wall.
The elongation of the upper wall is controlled by the
Can be kept within the limits of
Can be avoided and the collision energy absorption efficiency can be greatly increased .
【００１６】また特に請求項４の発明によれば，１つの
フロントクロス部材を左右のキックアップ部に併用でき
る。 [0016] According to the invention of claim 4, in particular,
Front cross member can be used for left and right kick-up parts
You.
【図１】車体フレームの要部斜視図である。FIG. 1 is a perspective view of a main part of a vehicle body frame.
【図２】サイドフレーム部材の一例を示す斜視図であ
る。FIG. 2 is a perspective view showing an example of a side frame member.
【図３】サイドフレーム部材の圧縮変形説明図である。FIG. 3 is an explanatory view of compression deformation of a side frame member.
【図４】サイドフレーム部材の他例を示す横断面図であ
る。FIG. 4 is a cross-sectional view showing another example of the side frame member.
１ 車体フレーム ３ キックアップ部 ５ サイドフレーム部材（フレーム部材）６ フロントクロス部材 ７ 上壁 ８ 下壁 ９ 側壁 ｐ 押出しパイプDESCRIPTION OF SYMBOLS 1 Body frame 3 Kickup part 5 Side frame member (frame member) 6 Front cross member 7 Upper wall 8 Lower wall 9 Side wall p Extruded pipe
フロントページの続き (56)参考文献 特開 平４−5182（ＪＰ，Ａ) 特開 平６−71364（ＪＰ，Ａ) 特開 平６−7874（ＪＰ，Ａ) 特表 平６−503784（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B62D 25/20 B62D 21/02 B62D 25/08 Continuation of the front page (56) References JP-A-4-5182 (JP, A) JP-A-6-71364 (JP, A) JP-A-6-7874 (JP, A) Table 6-503784 (JP) , A) (58) Field surveyed (Int. Cl. 7 , DB name) B62D 25/20 B62D 21/02 B62D 25/08
Claims (4)
体フレーム（１）の前部に存する左右のキックアップ部
（３）が，Ａｌ合金製押出しパイプ（ｐ）を弓形に折曲
げてなるサイドフレーム部材（５）を各々備える車体フ
レーム構造であって， 前記 押出しパイプ（ｐ）は，帯状上壁（７）と，その上
壁（７）に対向する帯状下壁（８）と，前記上壁（７）
の左右両側縁および前記下壁（８）の左右両側縁間をそ
れぞれ繋ぐと共に横断面Ｖ字状をなす左右一対の側壁
（９）とよりなることを特徴とする，車体フレーム構
造。1. A vehicle for avoiding the left and right front wheel axles (2).
Left and right kick-up sections in front of body frame (1)
(3) bending the extruded pipe (p) made of Al alloy into an arc
Body members each having a side frame member (5)
A frame structure, wherein the extruded pipe (p) includes a band-shaped upper wall (7), a band-shaped lower wall (8) opposed to the upper wall (7), and the upper wall (7).
Left and right side edges and wherein the more becomes possible pair of right and left side walls (9) between the right and left side edges of the form a cross-section V-shaped with connecting each of said lower wall (8), the body frame structure of
Build .
をなすことを特徴とする，請求項１記載の車体フレーム
構造。2. The vehicle body frame according to claim 1, wherein the extruded pipe has a hexagonal cross section.
Structure .
形をなすことを特徴とする，請求項１記載の車体フレー
ム構造。3. The vehicle body frame structure according to claim 1, wherein said extruded pipe (p) has a conical cross section.
部を支持するフロントクロス部材（６）を備えることを
特徴とする，請求項１記載の車体フレーム構造。 4. Front ends of left and right side frame members (5).
A front cross member (6) for supporting the part.
The vehicle body frame structure according to claim 1, characterized in that:
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23682697A JP3333719B2 (en) | 1997-09-02 | 1997-09-02 | Body frame structure |
| EP98307022A EP0900717B1 (en) | 1997-09-02 | 1998-09-01 | Hollow frame member of aluminum alloy for vehicle body frame |
| DE69840368T DE69840368D1 (en) | 1997-09-02 | 1998-09-01 | Hollow profile parts made of aluminum alloy for a car body frame |
| DE69827720T DE69827720T2 (en) | 1997-09-02 | 1998-09-01 | Hollow profile parts made of aluminum alloy for a car body frame |
| US09/145,413 US6099071A (en) | 1997-09-02 | 1998-09-01 | Hollow frame member of aluminum alloy for vehicle body frame |
| EP03028184A EP1398247B1 (en) | 1997-09-02 | 1998-09-01 | Hollow frame member of aluminum alloy for vehicle body frame |
| CN98118823A CN1095772C (en) | 1997-09-02 | 1998-09-02 | Hollow frame member of aluminium alloy for vehicle body frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23682697A JP3333719B2 (en) | 1997-09-02 | 1997-09-02 | Body frame structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1178976A JPH1178976A (en) | 1999-03-23 |
| JP3333719B2 true JP3333719B2 (en) | 2002-10-15 |
Family
ID=17006364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23682697A Expired - Fee Related JP3333719B2 (en) | 1997-09-02 | 1997-09-02 | Body frame structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3333719B2 (en) |
-
1997
- 1997-09-02 JP JP23682697A patent/JP3333719B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1178976A (en) | 1999-03-23 |
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