JPH06227253A - Car door impact beam - Google Patents
Car door impact beamInfo
- Publication number
- JPH06227253A JPH06227253A JP1887293A JP1887293A JPH06227253A JP H06227253 A JPH06227253 A JP H06227253A JP 1887293 A JP1887293 A JP 1887293A JP 1887293 A JP1887293 A JP 1887293A JP H06227253 A JPH06227253 A JP H06227253A
- Authority
- JP
- Japan
- Prior art keywords
- impact beam
- car door
- door impact
- deformation
- vehicle
- 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
Landscapes
- Vibration Dampers (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
【０００１】[0001]
【０００２】[0002]
【産業上の利用分野】本発明は、車両用ドア内に配設さ
れ衝撃吸収材として機能する車両用ドアインパクトビー
ムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door impact beam disposed in a vehicle door and functioning as a shock absorber.
【０００３】[0003]
【従来の技術】従来、この種のインパクトビームとして
は、実開平１−９９７１２号公報に示されるものが知ら
れている。これは、荷重作用面を形成する第１部分，第
１部分と略平行な第２部分，第１部分及び第２部分に対
して略垂直で且つ第１部分及び第２部分を連結する第３
部分及び第４部分を一体に有した断面角形の中空角筒で
あつて、しかも、第３部分及び第４部分が第１部分及び
第２部分に対して厚肉とされたものとであつた。2. Description of the Related Art Conventionally, as this type of impact beam, the one shown in Japanese Utility Model Laid-Open No. 1-99712 is known. This is a first part that forms a load acting surface, a second part that is substantially parallel to the first part, a third part that is substantially perpendicular to the first part and the second part and that connects the first part and the second part.
A hollow rectangular tube having a rectangular cross section having an integral portion and a fourth portion, wherein the third portion and the fourth portion are thicker than the first portion and the second portion. .
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記したイン
パクトビームであると、第３部分及び第４部分が第１部
分及び第２部分に対して厚肉とされているので、第３部
分及び第４部分の座屈強度に比べて第１部分及び第２部
分のじん性が低く、第１部分に荷重が作用した場合、第
３部分及び第４部分での座屈変形が始まる前に曲げ変形
や引張変形する第１部分及び第２部分に亀裂や破断が生
じることとなる。よつて、衝撃吸収性能を著しく低下さ
せることとなる恐れがあつた。However, in the above-mentioned impact beam, since the third portion and the fourth portion are thicker than the first portion and the second portion, the third portion and the fourth portion are formed. The toughness of the first and second parts is lower than the buckling strength of the four parts, and when load is applied to the first part, bending deformation occurs before buckling deformation starts in the third and fourth parts. Cracks and fractures will occur in the first and second portions that undergo tensile deformation. Therefore, there is a possibility that the shock absorption performance may be significantly reduced.
【０００５】故に、本発明は衝撃吸収性能を向上させた
車両用ドアインパクトビームを提供することを、その技
術的課題とするものである。Therefore, it is a technical object of the present invention to provide a vehicle door impact beam having improved shock absorbing performance.
【０００６】[0006]
【０００７】[0007]
【課題を解決するための手段】上記技術的課題を解決す
るために本発明において講じた技術的手段は、少なくと
も荷重作用面を形成する第１部分，該第１部分と略平行
な第２部分，前記第１部分及び前記第２部分に対して略
垂直で且つ前記第１部分及び前記第２部分を連結する連
結部分を一体に有し、前記第１部分及び前記第２部分が
前記連結部分に対して高張力とされたことである。The technical means taken in the present invention to solve the above technical problems are at least a first portion forming a load acting surface and a second portion substantially parallel to the first portion. , Integrally having a connecting portion that is substantially perpendicular to the first portion and the second portion and that connects the first portion and the second portion, and the first portion and the second portion are the connecting portions. It was made to have high tension.
【０００８】[0008]
【作用】上記技術的手段によれば、第１部分及び第２部
分が連結部分に対して高張力とされるので、第１部分に
荷重が作用すると、第１部分及び第２部分が単純支持梁
の如く変形し（第１部分が曲げ変形，第２部分が引張変
形し）、第１部分及び第２部分に曲げ変形や引張変形に
よつて亀裂や破断が生じる前に連結部分が座屈変形す
る。つまり、インパクトビームが受け得る最大荷重が向
上し、変形量も増大する。よつて、衝撃吸収性能が向上
する。According to the above technical means, since the first portion and the second portion have a high tension with respect to the connecting portion, when the load acts on the first portion, the first portion and the second portion are simply supported. It deforms like a beam (the first part is bent and the second part is tensilely deformed), and the connecting part buckles before cracks or fractures occur in the first and second parts due to bending or tensile deformation. Deform. That is, the maximum load that the impact beam can receive is improved, and the amount of deformation is also increased. Therefore, the shock absorption performance is improved.
【０００９】[0009]
【実施例】以下、本発明の一実施例を添付図面に基づい
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.
【００１０】図１及び図２に示されるように、車両のド
ア１は車両室外側の外側板１ａ及び車両室内側の内側板
１ｂとが内部に空間を形成するように合わせられて構成
されている。このドア１内にはインパクトビーム３が車
両前後方向に渡り内側板１ｂに固定されて配設されてい
る。As shown in FIGS. 1 and 2, a vehicle door 1 is constructed by combining an outer plate 1a outside the vehicle interior and an inner plate 1b inside the vehicle interior so as to form a space inside. There is. An impact beam 3 is arranged inside the door 1 so as to be fixed to the inner side plate 1b in the vehicle front-rear direction.
【００１１】図３に示されるように、インパクトビーム
３は、第１部分３ａ，第１部分３ａと略平行な第２部分
３ｂ，第１部分３ａ及び第２部分３ｂに対して略直角で
第１部分３ａと第２部分３ｂとを連結する第３部分３ｃ
及び第４部分３ｄとを一体に有する断面角形状を呈した
中空角筒である。このインパクトビーム３の第１部分３
ａがドア１の外側板１ａ側に配置され、第２部分３ｂが
内側板１ｂ側に配置されて第１部分３ａが荷重作用面と
なる。又、第１部分３ａ及び第２部分３ｂは高張力鋼よ
り成り、第３部分３ｃ及び第４部分３ｄは普通鋼より成
り、第３部分３ｃ及び第４部分３ｄの座屈強度に比べて
第１部分３ａ及び第２部分３ｂのじん性が高いものとさ
れている。As shown in FIG. 3, the impact beam 3 has a first portion 3a, a second portion 3b substantially parallel to the first portion 3a, a first portion 3a and a second portion 3b which are substantially perpendicular to each other. A third portion 3c that connects the first portion 3a and the second portion 3b
And a fourth portion 3d, which is a hollow rectangular tube having a square cross section. The first part 3 of this impact beam 3
a is arranged on the outer plate 1a side of the door 1, the second portion 3b is arranged on the inner plate 1b side, and the first portion 3a serves as a load acting surface. Also, the first portion 3a and the second portion 3b are made of high-tensile steel, the third portion 3c and the fourth portion 3d are made of ordinary steel, and have a buckling strength higher than that of the third portion 3c and the fourth portion 3d. The toughness of the first portion 3a and the second portion 3b is high.
【００１２】このように構成されたインパクトビーム３
は、図４に示されるように、第１部分３ａを構成する基
材４ａ，第２部分３ｂを構成する基材４ｂ，第３部分３
ｃを構成する基材４ｃ及び第４部分３ｄを構成する基材
４ｄを夫々板厚に対して０．３〜２倍で重合わせてビー
ム溶接により接合してなるシート材４を、ロール成形に
よつて基材４ｃ，４ｄの部分で曲げて成形される。Impact beam 3 constructed in this way
As shown in FIG. 4, the base material 4a that constitutes the first portion 3a, the base material 4b that constitutes the second portion 3b, and the third portion 3
The sheet material 4 formed by superposing the base material 4c forming c and the base material 4d forming the fourth portion 3d at 0.3 to 2 times the plate thickness and joining them by beam welding is used for roll forming. Therefore, the base materials 4c and 4d are bent and molded.
【００１３】次に作用について説明する。Next, the operation will be described.
【００１４】車両の衝突等によつてドア１に衝撃が加わ
ると、インパクトビーム３の第１部分３ａにその荷重が
作用して第１部分３ａ及び第２部分３ｂが単純支持梁の
如く曲げ変形及び引張変形する。さらに第１部分に作用
する荷重が大きくなると、第３部分３ｃ及び第４部分３
ｄが座屈変形する。これにより、第１部分に作用した荷
重が緩和されドア１に加わつた衝撃が吸収される。When an impact is applied to the door 1 due to a vehicle collision or the like, the load acts on the first portion 3a of the impact beam 3 and the first portion 3a and the second portion 3b are bent and deformed like a simple support beam. And tensile deformation. When the load acting on the first portion further increases, the third portion 3c and the fourth portion 3
d is buckled and deformed. As a result, the load acting on the first portion is relieved and the impact applied to the door 1 is absorbed.
【００１５】上記したように、第１部分３ａ及び第２部
分３ｂが第３部分３ｃ及び第４部分３ｄに対して高張力
とされていることから、第１部分３ａに作用した荷重
は、第１部分３ａ及び第２部分３ｂの曲げ変形及び引張
変形ならびに第３部分３ｃ及び第４部分３ｄの座屈変形
によつて緩和される。これにより、図５に示されるよう
に、インパクトビーム３が受け得る最大荷重が向上する
と共に変形量も増大し、衝撃吸収性能が向上する。As described above, since the first portion 3a and the second portion 3b have a high tension with respect to the third portion 3c and the fourth portion 3d, the load acting on the first portion 3a is It is alleviated by bending deformation and tensile deformation of the first portion 3a and the second portion 3b, and buckling deformation of the third portion 3c and the fourth portion 3d. As a result, as shown in FIG. 5, the maximum load that can be received by the impact beam 3 is improved, the deformation amount is also increased, and the impact absorption performance is improved.
【００１６】[0016]
【発明の効果】本発明によれば、第１部分及び第２部分
が連結部分に対して高張力とされているので、荷重が作
用した際の連結部分の座屈変形を期待することができ、
インパクトビームが受け得る最大荷重を向上させること
ができる。又、変形量も増大させることができる。これ
により、衝撃吸収性能を向上させることができる。According to the present invention, since the first portion and the second portion have high tension with respect to the connecting portion, it is possible to expect buckling deformation of the connecting portion when a load is applied. ,
The maximum load that the impact beam can receive can be improved. Also, the amount of deformation can be increased. As a result, the shock absorption performance can be improved.
【図１】本発明に係る車両用インパクトビームを搭載し
た車両のドアの斜視図である。FIG. 1 is a perspective view of a vehicle door equipped with a vehicle impact beam according to the present invention.
【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along the line AA of FIG.
【図３】本発明に係る車両用インパクトビームの断面図
である。FIG. 3 is a cross-sectional view of a vehicle impact beam according to the present invention.
【図４】本発明に係る車両用インパクトビームを形成す
る基材となるシート材の断面図である。FIG. 4 is a cross-sectional view of a sheet material serving as a base material for forming a vehicle impact beam according to the present invention.
【図５】本発明に係る車両用インパクトビームの荷重−
変形量を示す線図である。FIG. 5 is a load of the impact beam for vehicle according to the present invention;
It is a diagram showing the amount of deformation.
３ インパクトビーム ３ａ 第１部分 ３ｂ 第２部分 ３ｃ 第３部分（連結部分） ３ｄ 第４部分（連結部分） 3 Impact Beam 3a First Part 3b Second Part 3c Third Part (Connecting Part) 3d Fourth Part (Connecting Part)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中 尾 泰 武 愛知県刈谷市朝日町２丁目１番地 アイシ ン精機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasushi Nakao, Takeshi Aisin Seiki Co., Ltd., 2-chome, Asahi-cho, Kariya city, Aichi prefecture
Claims (1)
分，該第１部分と略平行な第２部分，前記第１部分及び
前記第２部分に対して略垂直で且つ前記第１部分及び前
記第２部分を連結する連結部分を一体に有し、前記第１
部分及び前記第２部分が前記連結部分に対して高張力と
される車両用ドアインパクトビーム。1. A first portion forming at least a load acting surface, a second portion substantially parallel to the first portion, a portion substantially perpendicular to the first portion and the second portion, and the first portion and the first portion. The connecting portion for connecting the second portion is integrally formed, and the first portion is provided.
A vehicle door impact beam in which a portion and the second portion have high tension with respect to the connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01887293A JP3211451B2 (en) | 1993-02-05 | 1993-02-05 | Vehicle impact beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01887293A JP3211451B2 (en) | 1993-02-05 | 1993-02-05 | Vehicle impact beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06227253A true JPH06227253A (en) | 1994-08-16 |
| JP3211451B2 JP3211451B2 (en) | 2001-09-25 |
Family
ID=11983639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01887293A Expired - Fee Related JP3211451B2 (en) | 1993-02-05 | 1993-02-05 | Vehicle impact beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3211451B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100401861B1 (en) * | 2001-05-25 | 2003-10-17 | 현대자동차주식회사 | safety beam of door for vehicle |
| KR100821010B1 (en) * | 2006-12-14 | 2008-04-08 | 현대자동차주식회사 | Car door impact beam |
| US7648191B2 (en) * | 2003-10-03 | 2010-01-19 | Nippon Steel Corporation | Automobile strength member |
| JP2010167945A (en) * | 2009-01-23 | 2010-08-05 | Mazda Motor Corp | Door pocket structure of vehicle |
-
1993
- 1993-02-05 JP JP01887293A patent/JP3211451B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100401861B1 (en) * | 2001-05-25 | 2003-10-17 | 현대자동차주식회사 | safety beam of door for vehicle |
| US7648191B2 (en) * | 2003-10-03 | 2010-01-19 | Nippon Steel Corporation | Automobile strength member |
| KR100821010B1 (en) * | 2006-12-14 | 2008-04-08 | 현대자동차주식회사 | Car door impact beam |
| JP2010167945A (en) * | 2009-01-23 | 2010-08-05 | Mazda Motor Corp | Door pocket structure of vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3211451B2 (en) | 2001-09-25 |
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