JP3320817B2 - Automotive bumper beam and method of manufacturing the same - Google Patents
Automotive bumper beam and method of manufacturing the sameInfo
- Publication number
- JP3320817B2 JP3320817B2 JP04555893A JP4555893A JP3320817B2 JP 3320817 B2 JP3320817 B2 JP 3320817B2 JP 04555893 A JP04555893 A JP 04555893A JP 4555893 A JP4555893 A JP 4555893A JP 3320817 B2 JP3320817 B2 JP 3320817B2
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing
- girder
- reinforcing member
- bumper beam
- walls
- 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
- Laser Beam Processing (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、自動車のバンパーを補
強するバンパービームに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bumper beam for reinforcing a vehicle bumper.
【0002】[0002]
【従来の技術】一般に、自動車のバンパーは、車体に連
結されるとともにバンパーの強度を保つバンパービーム
と、このバンパービームに取り付けられて車体の外観を
整える樹脂製の表皮材とから概略構成されている。そし
て、このバンパービームは燃費低減のために軽量化が図
られており、近年では軽合金製とする例が多くなってき
ている。例えば、図10に斜視図として、また図11に
断面図として示すバンパービーム1は、アルミ材で押し
出し成形されたバンパービームの一例で、目字型断面に
押し出し成形された補強桁2の壁面2aに、方向指示器
等の部品を取り付けたり、ラジエターに冷却風を導入し
たりするための開口3や、部品取り付けのためのボルト
挿通孔4等が設けられている。2. Description of the Related Art In general, an automobile bumper is generally constituted by a bumper beam connected to a vehicle body and maintaining the strength of the bumper, and a resin skin material attached to the bumper beam to adjust the appearance of the vehicle body. I have. The bumper beam has been reduced in weight in order to reduce fuel consumption. In recent years, many bumper beams have been made of light alloys. For example, a bumper beam 1 shown as a perspective view in FIG. 10 and a cross-sectional view in FIG. 11 is an example of a bumper beam extruded from an aluminum material, and is a wall surface 2a of a reinforcing girder 2 extruded into a square cross section. An opening 3 for attaching a component such as a direction indicator, introducing cooling air to the radiator, a bolt insertion hole 4 for attaching a component, and the like are provided.
【0003】[0003]
【発明が解決しようとする課題】ところが、このように
閉じた断面形状に押し出し成形された補強桁2の壁面2
aに開口3を設ける従来の自動車用バンパービーム1の
製造方法は、開口3を設ける加工が容易ではなく、加工
設備が複雑になって設備費がかさむとともに、加工の工
数も多くかかり生産性を向上させることができなかっ
た。また、材料を除去する加工であるため材料歩留まり
も低く、高価な軽合金材料からこのバンパーの補強桁を
製作するとコストが上昇するといった問題が生じてい
た。そこで、本発明は上記のような現状に鑑みてなされ
たものであって、自動車用バンパービームを容易に製造
することができるようにして、設備費を低減させるとと
もに、加工工数をも低減させて生産性を向上させ、かつ
材料歩留まりを改善してバンパービームの製造コストの
改善を図ることを目的とする。However, the wall surface 2 of the reinforcing girder 2 extruded into a closed cross section as described above.
In the conventional method of manufacturing the bumper beam 1 for an automobile in which the opening 3 is provided in a, the processing for providing the opening 3 is not easy, the processing equipment becomes complicated, the equipment cost increases, and the number of processing steps increases, and the productivity increases. Could not be improved. In addition, since the material is removed, the yield of the material is low, and the production of the reinforcing girder of the bumper from an expensive light alloy material raises a problem that the cost increases. Therefore, the present invention has been made in view of the above-mentioned current situation, and has been made to be able to easily manufacture a bumper beam for an automobile, to reduce equipment cost and to reduce the number of processing steps. An object of the present invention is to improve the productivity and material yield to improve the manufacturing cost of a bumper beam.
【0004】[0004]
【課題を解決するための手段】前記の課題を解決するた
め、本発明の請求項1に記載の自動車用バンパービーム
は、対向して設けられた一対の壁とこれらの壁の一側ど
うしを一体に接続する壁を有して略コ字型断面に押し出
し成形された補強桁と、前記対向して設けられた一対の
壁の他側どうしに一体的に接続して前記補強桁の押し出
し方向に伸びる凹部の開口を部分的に塞ぐ複数の補強部
材とを有してなり、前記複数の補強部材の間にこれら補
強部材と前記一対の壁とに囲まれた開口を形成してなる
ことを特徴とする。In order to solve the above-mentioned problems, a bumper beam for an automobile according to the first aspect of the present invention comprises a pair of opposing walls and one side of these walls.
A reinforcing girder having a wall for integrally connecting the cattle and extruded into a substantially U-shaped cross section, and a pair of the opposing
Ri Na and a plurality of reinforcing members for closing the opening of the recess and integrally connected to the other side each other wall extending in the extrusion direction of the reinforcing digits in part, these complementary between the plurality of reinforcing members
An opening surrounded by a strong member and the pair of walls is formed .
【0005】また、前記の課題を解決する本発明の請求
項2に記載の自動車用バンパービームの製造方法は、補
強桁を略コ字型断面に押し出し成形し、この補強桁の押
し出し方向に延びる凹部の開口を所定部分を残して塞ぐ
ように前記補強桁に補強部材を接合することを特徴とす
る。According to a second aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile, in which a reinforcing girder is extruded into a substantially U-shaped cross section and extends in a direction in which the reinforcing girder is extruded. A reinforcing member is joined to the reinforcing girder so as to close the opening of the concave portion leaving a predetermined portion.
【0006】本発明の請求項2に記載の自動車用バンパ
ービームの製造方法は、対向して設けられた一対の壁と
これらの壁の一側どうしを一体に接続する壁を有する略
コ字型断面の補強桁を押し出し成形し、前記対向して設
けられた一対の壁の他側どうしに一体的に接続して前記
補強桁の押し出し方向に延びる凹部の開口を部分的に塞
ぐ複数の補強部材を前記補強桁に接合し、前記複数の補
強部材の間にこれら補強部材と前記一対の壁とに囲まれ
た開口を形成することを特徴とする。本発明の請求項3
に記載の自動車用バンパービームの製造方法は、前記請
求項2に記載の製造方法について、前記補強桁の前記凹
部を形成する互いに対向する壁面に、前記補強部材の側
面に当接して位置決めする位置決め用突出部を一体に押
し出し成形し、前記補強部材をその幅方向の両端面が前
記壁面に突き合わされるように成形し、前記補強部材を
前記位置決め用突出部に当接させて位置決めしながらそ
の両端面を前記壁面に突き合わせて溶接することを特徴
とする。According to a second aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile , comprising a pair of opposed walls.
A schematic having a wall connecting one side of these walls together
The reinforcing girder with a U-shaped cross section is extruded, and the
A plurality of reinforcing members for closing the opening of the recess extending eclipsed a pair of integrally connected to the extrusion direction of the <br/> reinforcing girder to the other side each other wall partially bonded to the reinforcing spar, wherein Multiple complements
Surrounded by the reinforcing member and the pair of walls between the strong members.
The opening is formed . Claim 3 of the present invention
The method for manufacturing a bumper beam for an automobile according to claim 2, wherein the manufacturing method according to claim 2, wherein the reinforcing girder is positioned in contact with a side surface of the reinforcing member on a wall surface of the reinforcing girder facing the recess. The protrusion is integrally formed by extrusion, and the reinforcing member is formed so that both end faces in the width direction thereof are abutted against the wall surface, and the reinforcing member is positioned while being brought into contact with the positioning protrusion. It is characterized in that both end surfaces are welded to the wall surface.
【0007】本発明の請求項4に記載の自動車用バンパ
ービームの製造方法は、前記請求項3に記載の製造方法
について、前記補強桁および前記補強部材の突き合わせ
部で互いに当接しながら外側表面に突出する突出部を、
前記補強桁および前記補強部材のそれぞれに一体に成形
し、これらの突出部を互いに当接させた状態で加熱溶融
して前記補強桁に前記補強部材を溶接することを特徴と
する。According to a fourth aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile according to the third aspect of the present invention, wherein the reinforcing girder and the reinforcing member abut on each other at an outer surface while abutting each other. The protruding part,
The reinforcing girder and the reinforcing member are formed integrally with each other, and the protruding portions are heated and melted in a state where they are in contact with each other, and the reinforcing member is welded to the reinforcing girder.
【0008】本発明の請求項5に記載の自動車用バンパ
ービームの製造方法は、前記請求項3に記載の製造方法
について、前記補強桁および前記補強部材の突き合わせ
部に鋭角に開く溶接の開先を互いに対向して形成する傾
斜面を、前記補強桁および前記補強部材のそれぞれに一
体に成形し、前記開先に突き合わせ面に沿ってレーザー
光を照射して前記補強桁に前記補強部材をレーザー溶接
することを特徴とする。According to a fifth aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile according to the third aspect of the invention, wherein the groove of the welding is opened at an acute angle to a butt portion of the reinforcing girder and the reinforcing member. Are formed integrally with each of the reinforcing girder and the reinforcing member, and the reinforcing girder is irradiated with a laser beam along the abutting surface on the groove to apply the laser to the reinforcing girder. It is characterized by welding.
【0009】本発明の請求項6に記載の自動車用バンパ
ービームの製造方法は、前記請求項3に記載の製造方法
について、前記補強桁および前記補強部材の突き合わせ
部に、突き合わせ面を跨いで押し出し方向に延びる溝部
を互いに対向して形成する段部を、前記補強桁および前
記補強部材のそれぞれに一体に成形し、この溝部に溶加
材を保持させながら前記補強桁に前記補強部材を溶接す
ることを特徴とする。According to a sixth aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile according to the third aspect, wherein the reinforcing beam and the reinforcing member are pushed over a butt surface at a butt portion of the reinforcing girder and the reinforcing member. Steps which form grooves extending in opposite directions are formed integrally with each of the reinforcing girder and the reinforcing member, and the reinforcing member is welded to the reinforcing girder while holding a filler material in the grooves. It is characterized by the following.
【0010】[0010]
【作用】本発明の請求項1に記載の自動車用バンパービ
ームおよび請求項2に記載の自動車用バンパービームの
製造方法は、略コ字型断面に押し出し成形された補強桁
の長手方向に延びる凹部の開口を、所定部分を残して複
数の補強部材で塞いで補正部材間に開口を形成する構成
としたので、開口を有するバンパービームの製造を容易
にし、かつ除去される材料を最小限にして材料歩留まり
を向上させる。即ち、前記複数の補強部材の間にこれら
補強部材と前記一対の壁とに囲まれた開口を形成できる
ので、押し出し材に別途孔をあけることなく開口を形成
することができる。これにより、押し出し材に開口を形
成する加工を押し出し材に直接行っていた従来に比べて
補正部材を取り付けるという作業により遥かに容易に開
口の形成ができるようになる。 According to the method for manufacturing a bumper beam for an automobile according to the first aspect of the present invention and the bumper beam for an automobile according to the second aspect of the present invention, the concave portion extending in the longitudinal direction of the reinforcing girder extruded to have a substantially U-shaped cross section. the opening, leaving a predetermined subcomplex of
Since the opening is formed between the correction members by closing with the number of reinforcing members, the production of the bumper beam having the opening is facilitated, and the material yield is improved by minimizing the material to be removed. That is, these
An opening surrounded by a reinforcing member and the pair of walls can be formed.
Therefore, an opening is formed without separately drilling holes in the extruded material
can do. This creates an opening in the extruded material
Compared to the conventional process where the extruded material is directly processed
It is much easier to open by attaching the correction member.
The mouth can be formed.
【0011】本発明の請求項3に記載の自動車用バンパ
ービームの製造方法は、補強桁の凹部を形成する互いに
対向する壁面に設けた突出部により、補強部材を位置決
めしながらこの補強部材を補強桁に溶接するので、溶接
作業を容易にする。According to a third aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile, wherein the reinforcing member is positioned while the reinforcing member is positioned by a protrusion provided on opposing wall surfaces forming a concave portion of the reinforcing girder. Welding to girder facilitates welding work.
【0012】本発明の請求項4に記載の自動車用バンパ
ービームの製造方法は、補強桁および補強部材の突き合
わせ部に設けられて外側表面から突出する突出部を互い
に当接させ、その先端を加熱し溶融して互いに溶接する
こととしたので、補強桁と補強部材をより容易かつ強固
に溶接する。According to a fourth aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile, wherein the protrusions provided at the butting portion of the reinforcing girder and the reinforcing member and projecting from the outer surface are brought into contact with each other, and the tip is heated. Then, the reinforcing girder and the reinforcing member are more easily and firmly welded.
【0013】本発明の請求項5に記載の自動車用バンパ
ービームの製造方法においては、補強桁および補強部材
の突き合わせ部に設けた鋭角に開く溶接の開先に突き合
わせ面に沿ってレーザー光を照射するから、レーザー光
は開先の傾斜面で反射されて開先の先端に集中し、突き
合わせ部を集中的に加熱溶融して強固に溶接する。In the method of manufacturing a bumper beam for an automobile according to a fifth aspect of the present invention, a laser beam is radiated along an abutting surface to a sharply-welded welding groove provided at a butting portion of a reinforcing girder and a reinforcing member. Therefore, the laser light is reflected by the inclined surface of the groove and is concentrated at the tip of the groove, and the butted portion is intensively heated and melted to be strongly welded.
【0014】本発明の請求項6に記載の自動車用バンパ
ービームの製造方法においては、補強桁および補強部材
の突き合わせ部に設けられた溝部に溶加材を保持させな
がら溶接するので、溶接作業を容易にする。In the method of manufacturing a bumper beam for an automobile according to the sixth aspect of the present invention, welding is performed while holding a filler material in a groove provided at a butt portion of a reinforcing girder and a reinforcing member. make it easier.
【0015】[0015]
【実施例】本発明の各請求項に係る実施例を、以下に図
面に基づいて詳細に説明する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;
【0016】実施例1 本発明の請求項1に係る自動車用バンパービームおよび
請求項2に係るその製造方法の一実施例について、図1
および図2を用いて説明する。本実施例1の自動車用バ
ンパービーム10は、図1に斜視図として示すように、
補強桁11とその長手方向に延びる凹部11bの開口を
塞ぐ補強部材12・13とを有している。前記補強桁1
1は、図2に示すように、一対の長方形状中空断面部1
1a・11cの一方の側の長辺の壁11e・11fを互
いに対向させるとともに、一方の側の短辺の壁を平板状
の壁11dで一体に接続して略コ字型とした断面を有
し、アルミ材を用いて押し出し成形されている。そして
前記平板状の壁11dと前記壁11e・11fにより、
前記平板状の壁11dとは反対側に開口する長手方向に
延びる凹部11bが形成されている。前記補強部材12
・13は、押し出し方向に延びる細長い帯板とされ、そ
の幅方向の両端面が補強桁11の前記壁11e・11f
の壁面に当接するようにされている。また、その長手方
向の端面に12a・13aには、方向支持器等の部品を
固定するボルト孔12b・13bが設けられている。Embodiment 1 FIG. 1 shows an embodiment of a bumper beam for an automobile according to claim 1 of the present invention and a manufacturing method thereof according to claim 2.
This will be described with reference to FIG. As shown in FIG. 1 as a perspective view, an automobile bumper beam 10 according to the first embodiment includes:
It has a reinforcing girder 11 and reinforcing members 12 and 13 for closing an opening of a concave portion 11b extending in the longitudinal direction. The reinforcing girder 1
1 is a pair of rectangular hollow cross sections 1 as shown in FIG.
The long side walls 11e and 11f on one side of 1a and 11c are opposed to each other, and the short side walls on one side are integrally connected by a flat wall 11d to have a substantially U-shaped cross section. And is extruded using an aluminum material. And, by the flat wall 11d and the walls 11e and 11f,
A recess 11b extending in the longitudinal direction is formed on the opposite side to the flat wall 11d. The reinforcing member 12
13 is an elongated strip extending in the extrusion direction, and both end faces in the width direction thereof are the walls 11e and 11f of the reinforcing girder 11.
So that it comes into contact with the wall surface. Further, bolt holes 12b and 13b for fixing components such as a direction support device are provided in the longitudinal end surfaces 12a and 13a.
【0017】次に、本実施例1の自動車用バンパービー
ムの製造方法について説明する。まず、補強桁11を略
コ字型断面に押し出し成形する。ついで補強部材12・
13を細長い帯板状として、その幅方向の両端面が補強
桁11の前記壁11e・11fの壁面に当接するように
成形する。さらに、図2に示すように、まず、補強部材
12の幅方向の両端面を補強桁11の前記壁11e・1
1fの表面に突き合わせ、かつ補強部材12の表面が補
強桁11の表面と面一となるように位置決めした後、両
者を溶接する。次に、図1に示すように、補強部材13
のボルト挿通孔13bが設けられた側の端面13aと、
補強部材12のボルト挿通孔12bが設けられた側の端
面12aとが、距離Lだけ離れるように補強部材13を
補強部材12と同様に補強桁11に溶接して、開口14
を形成する。Next, a method of manufacturing the bumper beam for an automobile according to the first embodiment will be described. First, the reinforcing girder 11 is extruded into a substantially U-shaped cross section. Next, reinforcing member 12
13 is formed in an elongated strip shape so that both end surfaces in the width direction thereof are in contact with the wall surfaces of the walls 11 e and 11 f of the reinforcing girder 11. Further, as shown in FIG. 2, first, both end faces in the width direction of the reinforcing member 12 are attached to the walls 11 e.
After positioning the surface of the reinforcing member 12 so as to be flush with the surface of the reinforcing girder 11, the two members are welded. Next, as shown in FIG.
An end face 13a on the side where the bolt insertion hole 13b is provided;
The reinforcing member 13 is welded to the reinforcing girder 11 in the same manner as the reinforcing member 12 so that the reinforcing member 12 is separated from the end surface 12a of the reinforcing member 12 on the side where the bolt insertion hole 12b is provided by the distance L, and the opening 14 is formed.
To form
【0018】上述のように、本実施例1における自動車
用バンパービーム11は、略コ字型断面に押し出し成形
された補強桁と、この補強桁に溶接されて前記補強桁の
押し出し方向に延びる凹部の所定部分を塞ぐ補強部材と
から構成したので、従来例のように閉断面形状に押し出
し成形された補強桁の側面に開口を設ける製造方法に比
較すると、容易に製造できるから、高価な設備が不要と
なるばかりでなく加工工数を低減させて生産性を向上さ
せることができる。また、除去される部分は補強部材に
設けられる部品取付用のボルト孔だけであるから、材料
歩留まりを向上させてコストを低減することができる。
なお、本実施例1においては、補強部材12・13はい
ずれも平板状としているが、これにとらわれる必要はな
く、補強部材12・13を様々な形状に成形してバンパ
ービーム10の強度を上げることとしても良い。また、
本実施例1においては、補強部材12を補強桁11に溶
接することとしているが、これにとらわれる必要はな
く、例えば図3に要部を拡大して示すように、補強桁1
1と補強部材12の突き合わせ部分に互いに係合する鈎
状の突出部11g・12cをそれぞれ一体に成形すると
ともに、両者を互いに係合させて接着剤15にて接着固
定することとしても良いし、図4に要部を拡大して示す
ように、補強桁11の前記壁11e・11fの表面に突
出部11hを一体に押し出し成形し、この突出部11h
に補強部材12を重畳載置させた後、ブラインドリベッ
ト16を用いて両者を結合することとしても良い。さら
には、方向支持器等の部品を取り付ける開口14を、補
強部材12そのものにあらかじめ成形してから、補強桁
11に溶接することとしても良い。As described above, the automobile bumper beam 11 in the first embodiment has a reinforcing girder extruded and formed into a substantially U-shaped cross section, and a concave portion which is welded to the reinforcing girder and extends in the pushing direction of the reinforcing girder. Since it is composed of a reinforcing member that closes a predetermined portion of the reinforcing girder, it can be easily manufactured as compared with a manufacturing method of providing an opening on a side surface of a reinforcing girder extruded into a closed cross-sectional shape as in the conventional example, so that expensive equipment is required. Not only is it unnecessary, but also the number of processing steps can be reduced and the productivity can be improved. Further, since the removed portion is only the bolt hole for mounting the component provided on the reinforcing member, the material yield can be improved and the cost can be reduced.
In the first embodiment, each of the reinforcing members 12 and 13 has a flat plate shape. However, the reinforcing members 12 and 13 need not be limited to this, and the strength of the bumper beam 10 is increased by forming the reinforcing members 12 and 13 into various shapes. It is good. Also,
In the first embodiment, the reinforcing member 12 is welded to the reinforcing girder 11. However, the present invention is not limited to this. For example, as shown in FIG.
The hook-shaped protrusions 11g and 12c that engage with each other at the butting portion of the reinforcement member 12 and the reinforcement member 12 may be integrally formed, and may be engaged with each other and bonded and fixed with the adhesive 15. As shown in an enlarged manner in FIG. 4, a protruding portion 11h is integrally formed on the surface of the walls 11e and 11f of the reinforcing girder 11 by extrusion.
After the reinforcing member 12 is superimposed and mounted thereon, the two members may be connected using a blind rivet 16. Further, the opening 14 for attaching a component such as a direction supporter may be formed in advance in the reinforcing member 12 itself and then welded to the reinforcing girder 11.
【0019】実施例2 本発明の請求項3に係る自動車用バンパービームの製造
方法の一実施例について、図5を用いて説明する。ま
ず、本実施例2の自動車用バンパービームの製造方法に
よって製造される自動車用バンパービーム20について
説明すると、このバンパービーム20は、図5に断面図
として示すように、補強桁21と、その長手方向に延び
る凹部21bの開口を塞ぐ補強部材22とを有してい
る。前記補強桁21は、前述の実施例1の補強桁11と
同様に略コ字型の断面を有するように成形されている
が、本実施例2の補強桁21においてはその壁21e・
21fに、前記補強部材22を位置決めするための突出
部21g・21hが互いに対向するように垂設されてい
る。そして、これらの突出部21g・21hの位置は、
補強部材22が重畳載置されたときに、補強部材22の
外側の表面が補強桁21の外側の表面と面一となる位置
とされている。前記補強部材22は、実施例1の補強部
材11と同様に、押し出し方向に延びる細長い帯板とさ
れ、かつその幅方向の両端面が、補強桁21の前記壁2
1e・21fの壁面にそれぞれ当接するようにされてい
る。Embodiment 2 An embodiment of a method of manufacturing a bumper beam for an automobile according to claim 3 of the present invention will be described with reference to FIG. First, a description will be given of an automobile bumper beam 20 manufactured by the method of manufacturing an automobile bumper beam according to the second embodiment. As shown in a sectional view of FIG. And a reinforcing member 22 for closing the opening of the concave portion 21b extending in the direction. The reinforcing girder 21 is formed so as to have a substantially U-shaped cross section similarly to the reinforcing girder 11 of the first embodiment described above, but in the reinforcing girder 21 of the second embodiment, the wall 21e.
Projections 21g and 21h for positioning the reinforcing member 22 are vertically provided on 21f so as to face each other. And the position of these protrusion parts 21g and 21h is
The outer surface of the reinforcing member 22 is flush with the outer surface of the reinforcing girder 21 when the reinforcing member 22 is superposed. The reinforcing member 22 is, like the reinforcing member 11 of the first embodiment, an elongated strip extending in the extrusion direction, and both end faces in the width direction are formed on the wall 2 of the reinforcing girder 21.
The walls 1a and 21f are in contact with each other.
【0020】次に、本実施例2の自動車用バンパービー
ムの製造方法について説明する。まず、補強桁21を略
コ字型断面に押し出し成形する。この時、補強桁21の
凹部21bを形成する互いに対向する壁21e・21f
に、補強部材22の側面22aに当接して補強部材22
を位置決めする位置決め用突出部21g・21hを一体
に押し出し成形する。さらに、補強部材22を細長い帯
板状として、その幅方向の両端面が補強桁11の前記壁
11e・11fの壁面に当接するように成形する。次い
で、補強部材22の一方の側の側面22aを補強桁21
に設けた前記位置決め用突出部21g・21hに当接さ
せて位置決めしながら、補強部材22の両端面を補強桁
21の前記壁21e・21fの壁面に突き合わせて溶接
して、補強桁21の押し出し方向に延びる凹部21bの
開口を所定部分を残して塞ぐ。すなわち、本実施例2の
自動車用バンパービームの製造方法によれば、前記壁2
1d・21eの壁面および位置決め用の前記突出部21
g・21hにより、補強部材22を容易に補強桁21に
位置決めすることができるから、例えばロボットによる
自動溶接も容易に行うことができ、生産性をさらに向上
させることができる。一方、前記突出部21g・21h
は、補強桁21を押し出し成形する際に同時に一体成形
すれば良いから、加工工数を増加させること無く設ける
ことができる。Next, a method of manufacturing the automotive bumper beam according to the second embodiment will be described. First, the reinforcing girder 21 is extruded into a substantially U-shaped cross section. At this time, the opposing walls 21e and 21f forming the recess 21b of the reinforcing beam 21
The reinforcing member 22 contacts the side surface 22a of the reinforcing member 22
The positioning protrusions 21g and 21h for positioning are extruded and formed integrally. Further, the reinforcing member 22 is formed in an elongated strip shape, and is formed so that both end surfaces in the width direction thereof are in contact with the wall surfaces of the walls 11 e and 11 f of the reinforcing girder 11. Next, one side surface 22 a of the reinforcing member 22 is
The reinforcing girder 21 is extruded by abutting and welding both end surfaces of the reinforcing member 22 to the wall surfaces of the walls 21e and 21f of the reinforcing girder 21 while abutting and positioning the positioning girder portions 21g and 21h. The opening of the recess 21b extending in the direction is closed except for a predetermined portion. That is, according to the method of manufacturing a bumper beam for an automobile of the second embodiment, the wall 2
1d · 21e wall surface and positioning protrusion 21
Since the reinforcing member 22 can be easily positioned on the reinforcing girder 21 by g · 21h, for example, automatic welding by a robot can be easily performed, and productivity can be further improved. On the other hand, the protrusions 21g and 21h
Can be integrally formed at the same time when the reinforcing girder 21 is extruded and formed, and therefore can be provided without increasing the number of processing steps.
【0021】実施例3 本発明の請求項4に係る自動車用バンパービームの製造
方法の一実施例について、図6を用いて説明する。ま
ず、本実施例3の自動車用バンパービームの製造方法に
よって製造される自動車用バンパービーム30について
説明すると、このバンパービーム30は、図6に断面図
として示すように、補強桁31と、その長手方向に延び
る凹部31bの開口を塞ぐ補強部材32とを有してい
る。前記補強桁31は、前述の実施例2の補強桁21と
同様に、略コ字型の断面を有するように成形されるとと
もに、前記補強部材32を位置決めする突出部31g・
31hが壁31e・31fに一体に成形されている。そ
して、前記壁31e・31fはそれぞれ凹部31bの開
口側に延長されて補強桁31の外側表面から突出する突
出部31i・31jとされている。そして、これらの突
出部31i・31jの先端から前記突出部31g・31
hに到る前記壁31e・31fの壁面は、補強部材32
の端面を突き合わせる突き合わせ面33とされている。
前記補強部材32は、長手方向に延びる細長い帯板の幅
方向の両端部にフランジ32c・32dを、一方の側の
側面32b側に一体に押し出し成形したもので、このフ
ランジ32c・32dが延びる側とは反対側の側面32
aが補強桁31の前記突出部31g・31hに当接する
ようにされているとともに、その幅方向の両端面が前記
突き合わせ面33にそれぞれ当接するようにされてい
る。Embodiment 3 An embodiment of a method of manufacturing an automobile bumper beam according to claim 4 of the present invention will be described with reference to FIG. First, a description will be given of an automobile bumper beam 30 manufactured by the method of manufacturing an automobile bumper beam according to the third embodiment. As shown in a sectional view of FIG. And a reinforcing member 32 for closing the opening of the concave portion 31b extending in the direction. Like the reinforcing girder 21 of the second embodiment, the reinforcing girder 31 is formed so as to have a substantially U-shaped cross section, and a protrusion 31g for positioning the reinforcing member 32.
31h is integrally formed with the walls 31e and 31f. The walls 31e and 31f are protruding portions 31i and 31j, respectively, extending toward the opening side of the concave portion 31b and protruding from the outer surface of the reinforcing girder 31. Then, from the tips of these protruding portions 31i and 31j, the protruding portions 31g and 31j are formed.
h, the wall surfaces of the walls 31e and 31f
Are formed as abutting surfaces 33 for abutting the end surfaces of the respective surfaces.
The reinforcing member 32 is formed by extruding flanges 32c and 32d at both ends in the width direction of an elongated strip extending in the longitudinal direction, and extruding the same integrally on one side surface 32b side, and extending the flanges 32c and 32d. Side 32 opposite to
"a" comes into contact with the protrusions 31g and 31h of the reinforcing girder 31, and both end faces in the width direction thereof are brought into contact with the butting surfaces 33, respectively.
【0022】次に、本実施例3の自動車用バンパービー
ムの製造方法について説明する。まず、補強桁31を略
コ字型断面に押し出し成形する。この時、補強部材32
を位置決めする位置決め用突出部31g・31h、およ
び、前記壁31e・31fをそれぞれ凹部31bの開口
側に延長して補強桁31の外側表面から突出する突出部
31i・31jを一体に押し出し成形する。さらに補強
部材32を長手方向に延びる細長い帯板とし、かつその
幅方向の両端部にフランジ32c・32dを一体に押し
出し成形して、その幅方向の両端面が前記突き合わせ面
33に当接するように成形する。次いで、補強部材32
を前記位置決め用突出部31g・31hで位置決めする
とともに、補強桁31の突出部31i・31jと補強部
材32のフランジ32c・32dとを突き合わせ面33
で互いに当接させる。そして、この状態で補強桁31の
突出部31i・31jと補強部材32のフランジ32c
・32dの先端を加熱溶融することにより補強部材32
を補強桁31に溶接する。Next, a method of manufacturing the bumper beam for a vehicle according to the third embodiment will be described. First, the reinforcing girder 31 is extruded into a substantially U-shaped cross section. At this time, the reinforcing member 32
The positioning projections 31g and 31h for positioning the slab and the walls 31e and 31f are respectively extended toward the opening side of the recess 31b, and the projections 31i and 31j projecting from the outer surface of the reinforcing girder 31 are integrally extruded and formed. Further, the reinforcing member 32 is an elongated strip extending in the longitudinal direction, and flanges 32c and 32d are integrally extruded and formed at both ends in the width direction so that both end faces in the width direction come into contact with the abutting surface 33. Molding. Next, the reinforcing member 32
Are positioned by the positioning protrusions 31g and 31h, and the protrusions 31i and 31j of the reinforcing girder 31 and the flanges 32c and 32d of the reinforcing member 32 abut against each other.
Abut each other. Then, in this state, the protrusions 31i and 31j of the reinforcing beam 31 and the flange 32c of the reinforcing member 32 are formed.
・ The reinforcing member 32 is formed by heating and melting the tip of 32d.
Is welded to the reinforcing girder 31.
【0023】すなわち、本実施例3の自動車用バンパー
ビームの製造方法によれば、補強桁31に突出部31i
・31j、および補強部材32にフランジ32c・32
dをそれぞれ設けて突き合わせ面33で互いに当接させ
るようにしたので、補強部材32の補強桁31に対する
位置決めをより容易に行うことができる。また、補強桁
31に設けられた突出部31i・31j、および補強部
材32に設けられたフランジ32c・32dの先端を外
側表面から突出するようにしたので、容易に加熱するこ
とができるとともに、これらの突出部およびフランジの
母材を溶融して接合することにより補強桁31と補強部
材32とを一層強固に溶接することができる。さらに補
強桁31に設けた前記突出部31i・31jは、補強桁
31を押し出し成形する際に同時に一体成形すれば良い
から加工工数を増加させること無く成形することができ
る。That is, according to the method of manufacturing a bumper beam for an automobile of the third embodiment, the projecting portion 31i is formed on the reinforcing girder 31.
31j, and a flange 32c
Since d is provided so as to abut against each other at the butting surface 33, the positioning of the reinforcing member 32 with respect to the reinforcing girder 31 can be performed more easily. In addition, since the protruding portions 31i and 31j provided on the reinforcing girder 31 and the tips of the flanges 32c and 32d provided on the reinforcing member 32 protrude from the outer surface, heating can be easily performed. By melting and joining the base materials of the projecting portion and the flange, the reinforcing girder 31 and the reinforcing member 32 can be more firmly welded. Further, the protrusions 31i and 31j provided on the reinforcing girder 31 can be formed without increasing the number of processing steps, since they may be integrally formed at the same time when the reinforcing girder 31 is extruded.
【0024】実施例4 本発明の請求項5に係る自動車用バンパービームの製造
方法の一実施例について、図7および図8を用いて説明
する。まず、本実施例4の自動車用バンパービームの製
造方法によって製造される自動車用バンパービーム40
について説明すると、このバンパービーム40は、図7
に断面図として示すように、補強桁41と、その長手方
向に延びる凹部41bの開口を塞ぐ補強部材42とを有
している。前記補強桁41は、前述の実施例2と同様に
略コ字型の断面を有するように成形されるとともに、前
記補強部材42を位置決めする突出部41g・41hが
壁41e・41fに一体に成形されている。そして、前
記壁41e・41fの前記凹部41bの開口側の端部に
は、それぞれ開口に対して外側に開く一対の傾斜面41
i・41jが形成されている。かつ前記傾斜面41i・
41jの端部と前記突出部41g・41hの間の前記壁
41e・41fの壁面は、前記補強部材42の端面が突
き合わされて溶接される突き合わせ面43とされ、前記
傾斜面41i・41jはこの突き合わせ面43に対して
約20度の傾斜角を有するようにされている。前記補強
部材42は、長手方向に延びる細長い帯板の幅方向の両
端部にフランジを42c・42dを一体に押し出し成形
したもので、このフランジ42c・42dの先端が前記
補強桁41の突出部41g・41hに当接するようにさ
れているとともに、その幅方向の両端面が前記突き合わ
せ面43にそれぞれ当接するようにされている。そし
て、前記フランジ42c・42dの付け根には傾斜面4
2e・42fが形成され、この補強部材42が補強桁4
1に取り付けられたときに、補強桁41に設けられてい
る前記傾斜面41i・41jと突き合わせ面43を挟ん
で対称とされ、突き合わせ面43を溶接する際の開先4
4を形成するようにされている。Embodiment 4 An embodiment of a method of manufacturing a bumper beam for an automobile according to claim 5 of the present invention will be described with reference to FIGS. First, an automobile bumper beam 40 manufactured by the method for manufacturing an automobile bumper beam according to the fourth embodiment.
The bumper beam 40 will be described with reference to FIG.
As shown in the cross-sectional view of FIG. 1, there is provided a reinforcing girder 41 and a reinforcing member 42 for closing an opening of a concave portion 41b extending in the longitudinal direction. The reinforcing girder 41 is formed so as to have a substantially U-shaped cross section as in the above-described embodiment 2, and the protrusions 41g and 41h for positioning the reinforcing member 42 are integrally formed with the walls 41e and 41f. Have been. A pair of inclined surfaces 41 that open outward with respect to the opening are respectively provided at the ends of the walls 41e and 41f on the opening side of the recess 41b.
i.41j are formed. And the inclined surface 41i.
The wall surfaces of the walls 41e and 41f between the end of 41j and the protruding portions 41g and 41h are abutting surfaces 43 where the end surfaces of the reinforcing members 42 are abutted and welded, and the inclined surfaces 41i and 41j are It has an inclination angle of about 20 degrees with respect to the butting surface 43. The reinforcing member 42 is formed by extruding flanges 42c and 42d integrally at both ends in the width direction of an elongated strip extending in the longitudinal direction, and the tips of the flanges 42c and 42d are protruding portions 41g of the reinforcing girder 41. 41h, and both end surfaces in the width direction thereof are made to contact the abutting surfaces 43, respectively. An inclined surface 4 is provided at the base of the flanges 42c and 42d.
2e and 42f are formed, and the reinforcing member 42
1, the inclined surfaces 41 i and 41 j provided on the reinforcing girder 41 are symmetrical with respect to the butting surface 43, and the groove 4 for welding the butting surface 43 is provided.
4 are formed.
【0025】次に、本実施例4の自動車用バンパービー
ムの製造方法について説明する。まず、補強桁41を略
コ字型断面に押し出し成形する。この時、補強部材42
を位置決めする位置決め用突出部41g・41h、およ
び、前記壁41e・41fの前記凹部41bの開口側の
端部に、それぞれ開口に対して外側に開く一対の傾斜面
41i・41jを一体に押し出し成形する。さらに補強
部材42を長手方向に延びる細長い帯板とし、かつその
幅方向の両端部にフランジ42c・42dを一体に押し
出し成形して、その幅方向の両端面が前記突き合わせ面
43に当接するように成形する。そして、前記フランジ
42c・42dの付け根に傾斜面42e・42fを一体
に成形する。次いで、補強部材42を前記位置決め用突
出部41g・41hで位置決めして、補強桁41の凹部
41bの開口の所定部分を塞ぐと、補強桁41に設けら
れた傾斜面41i・41jと、補強部材42に設けられ
た傾斜面42e・42fが互いに対向して、突き合わせ
面43に対して対称で開き角度が約40度の開先が形成
される。したがって、この開先43に、前記突き合わせ
面43に沿ってレーザー光を照射して、補強桁41と補
強部材42とをレーザー溶接する。すなわち、本実施例
4の自動車用バンパービームの製造方法によれば、図8
に拡大して示すように、レーザー光は開先44を形成す
る傾斜面で反射して、前記開先44の先端に集中するか
ら、補強桁41と補強部材42の突き合わせた部が集中
的に加熱され、補強桁41と補強部材42を効率よく加
熱し母材を溶融して強固に溶接することができる。な
お、本実施例4においては開先の開き角度を約40度と
したが、これにとらわれる必要はなく、レーザー光が開
先を形成する反射面で反射されて開先の先端に集中する
範囲内で、適宜、開先の開き角度を選択しても良い。ま
た、開先は突き合わせ面に対して必ずしも対称とする必
要はなく、レーザー光を照射する角度に合わせて適宜設
定することができる。Next, a method of manufacturing the bumper beam for a vehicle according to the fourth embodiment will be described. First, the reinforcing girder 41 is extruded into a substantially U-shaped cross section. At this time, the reinforcing member 42
A pair of inclined surfaces 41i and 41j, which open outward with respect to the openings, are integrally formed on the positioning projections 41g and 41h and the walls 41e and 41f on the opening-side ends of the recesses 41b. I do. Further, the reinforcing member 42 is formed into an elongated strip extending in the longitudinal direction, and flanges 42c and 42d are integrally formed by extrusion at both ends in the width direction so that both end faces in the width direction come into contact with the abutting surface 43. Molding. Then, inclined surfaces 42e and 42f are integrally formed at the roots of the flanges 42c and 42d. Next, when the reinforcing member 42 is positioned by the positioning protrusions 41g and 41h and a predetermined portion of the opening of the concave portion 41b of the reinforcing girder 41 is closed, the inclined surfaces 41i and 41j provided on the reinforcing girder 41 and the reinforcing member The inclined surfaces 42 e and 42 f provided on the surface 42 oppose each other, and a groove having an opening angle of about 40 degrees is formed symmetrically with respect to the abutting surface 43. Therefore, the groove 43 is irradiated with laser light along the abutting surface 43, and the reinforcing beam 41 and the reinforcing member 42 are laser-welded. That is, according to the method of manufacturing a bumper beam for an automobile of the fourth embodiment, FIG.
As shown in the enlarged view, the laser beam is reflected by the inclined surface forming the groove 44 and is concentrated at the tip of the groove 44. Therefore, the butted portion of the reinforcing beam 41 and the reinforcing member 42 is concentrated. It is heated, and the reinforcing beam 41 and the reinforcing member 42 are efficiently heated, and the base material can be melted and strongly welded. In the fourth embodiment, the opening angle of the groove is set to about 40 degrees. However, the angle is not limited to this, and the range in which the laser light is reflected by the reflection surface forming the groove and concentrates on the tip of the groove. Among them, the opening angle of the groove may be appropriately selected. Further, the groove does not necessarily have to be symmetrical with respect to the abutting surface, and can be appropriately set in accordance with the angle at which the laser beam is irradiated.
【0026】実施例5 本発明の請求項6に係る自動車用バンパービームの製造
方法の一実施例について、図9を用いて説明する。ま
ず、本実施例5の自動車用バンパービームの製造方法に
よって製造される自動車用バンパービーム50について
説明すると、このバンパービーム50は、図9に断面図
として示すように、補強桁51と、その長手方向に延び
る凹部51bの開口を塞ぐ補強部材52とを有してい
る。前記補強桁51は、前述の実施例2と同様に略コ字
型の断面を有するように成形されるとともに、前記補強
部材52を位置決めする突出部51g・51hが壁51
e・51fに一体に垂設されている。そして、前記壁5
1e・51fの前記凹部41bの開口側の隅角部にはそ
れぞれ段部51i・51jが形成されている。そして前
記段部51i・51jと前記突出部51g・51hの間
の前記壁51e・51fの開口51b側の表面が、前記
補強部材52の端面が突き合わされて溶接される突き合
わせ面53とされている。前記補強部材52は、長手方
向に延びる細長い帯板の幅方向の両端部に階段状の段部
52a・52bを一体に押し出し成形したもので、その
階段状に成形された部分の先端が前記突出部51g・5
1hに当接するようにされるとともに、その幅方向の両
端面が補強桁51の突き合わせ面53にそれぞれ当接す
るようにされている。Embodiment 5 An embodiment of a method of manufacturing a bumper beam for an automobile according to claim 6 of the present invention will be described with reference to FIG. First, a description will be given of an automobile bumper beam 50 manufactured by the method of manufacturing an automobile bumper beam according to the fifth embodiment. As shown in a sectional view of FIG. And a reinforcing member 52 for closing the opening of the concave portion 51b extending in the direction. The reinforcing girder 51 is formed so as to have a substantially U-shaped cross section similarly to the above-described second embodiment, and the protrusions 51g and 51h for positioning the reinforcing member 52 are formed on the wall 51.
e · 51f are integrally suspended. And the wall 5
Steps 51i and 51j are formed at the corners on the opening side of the concave portion 41b of 1e and 51f, respectively. The surface on the opening 51b side of the walls 51e and 51f between the step portions 51i and 51j and the projecting portions 51g and 51h is a butt surface 53 to which the end surfaces of the reinforcing member 52 are butted and welded. . The reinforcing member 52 is formed by integrally extruding stepped step portions 52a and 52b at both ends in the width direction of an elongated strip extending in the longitudinal direction, and the tip of the step-shaped portion protrudes. Part 51g / 5
1h, and both end surfaces in the width direction thereof are in contact with the butting surfaces 53 of the reinforcing beams 51, respectively.
【0027】次に、本実施例5の自動車用バンパービー
ムの製造方法について説明する。まず、補強桁51を略
コ字型断面に押し出し成形する。この時、補強部材52
を位置決めする位置決め用突出部51g・51h、およ
び前記壁51e・51fの開口側の隅角部に、それぞれ
段部51i・51jを一体に押し出し成形する。さらに
補強部材52を長手方向に延びる細長い帯板とし、かつ
その幅方向の両端部に段部52a・52bを一体に押し
出し成形して、その幅方向の両端面が前記突き合わせ面
53に当接するように成形する。次いで、補強部材52
を位置決め用突出部51g・51hで位置決めして、補
強桁51の凹部51bの開口の所定部分を塞ぐ。これに
より、補強桁51と補強部材52にそれぞれに設けられ
た段部51i・51jおよび52a・52bが互いに対
向して、本実施例5のビーム50の表面に、突き合わせ
面53をまたいで長手方向に延びる溝54が形成される
から、この溝54の内部に溶加材を保持させながら補強
桁51および補強部材52を互いに溶接する。すなわ
ち、本実施例5の自動車用バンパービームの製造方法に
よれば、補強桁と補強部材との突き合わせ部に、突き合
わせ面を跨いで押し出し方向に延びる溝が形成されるか
ら、この溝に溶加材を保持させながら溶接作業を行うこ
とにより、溶接作業をより一層容易に行うことができ
る。Next, a method of manufacturing the bumper beam for a vehicle according to the fifth embodiment will be described. First, the reinforcing girder 51 is extruded into a substantially U-shaped cross section. At this time, the reinforcing member 52
Steps 51i and 51j are integrally extruded and formed at the positioning protrusions 51g and 51h for positioning the bosses and at the corners on the opening side of the walls 51e and 51f, respectively. Further, the reinforcing member 52 is an elongated strip extending in the longitudinal direction, and stepped portions 52a and 52b are integrally extruded at both ends in the width direction so that both end surfaces in the width direction abut on the abutting surface 53. Mold into Next, the reinforcing member 52
Are positioned by the positioning projections 51g and 51h, and a predetermined portion of the opening of the concave portion 51b of the reinforcing girder 51 is closed. As a result, the steps 51i and 51j and 52a and 52b provided on the reinforcing beam 51 and the reinforcing member 52 respectively face each other, and the longitudinal direction of the beam 50 of the fifth embodiment extends across the abutting surface 53. The reinforcing girder 51 and the reinforcing member 52 are welded to each other while holding a filler material inside the groove 54. That is, according to the method of manufacturing a bumper beam for an automobile of the fifth embodiment, since the groove extending in the extrusion direction across the butt surface is formed at the butt portion between the reinforcing girder and the reinforcing member. By performing the welding operation while holding the material, the welding operation can be performed more easily.
【0028】[0028]
【発明の効果】本発明の請求項1に記載の自動車用バン
パービーム、および請求項2に記載のこの自動車用バン
パービームの製造方法においては、補強桁を略コ字型断
面に押し出し成形し、この補強桁の押し出し方向に延び
る凹部の開口を所定部分を残して塞ぐように前記補強桁
に補強部材を接合してこれら補強部材と補強桁の壁とで
囲まれる開口を形成することとしたので、以下のような
優れた効果が得られた。すなわち、従来例のように閉断
面形状に押し出し成形された補強桁の側面に開口を設け
る製造方法に比較すると、複数の補強部材を接合するこ
とで開口を容易に製造できるので高価な設備が不要とな
るばかりでなく加工工数を低減して生産性を向上させる
ことができ、材料の無駄もなくすることができ、補強部
材で補強桁を補強できる。 According to the bumper beam for an automobile according to the first aspect of the present invention and the bumper beam for an automobile according to the second aspect of the present invention, the reinforcing girder is extruded into a substantially U-shaped cross section. A reinforcing member is joined to the reinforcing girder so as to close the opening of the concave portion extending in the extrusion direction of the reinforcing girder leaving a predetermined portion, and these reinforcing members and the wall of the reinforcing girder are joined together.
Since the enclosed opening was formed , the following excellent effects were obtained. That is, as compared with the manufacturing method in which an opening is provided on the side surface of a reinforcing girder extruded into a closed cross section as in the conventional example, a plurality of reinforcing members are joined.
And in so the opening can be easily manufactured can improve productivity by reducing the number of processing steps not only expensive equipment is not necessary, can be no waste of material, the reinforcing portion
The reinforcement girder can be reinforced with the material.
【0029】また、本発明の請求項3に記載の自動車用
バンパービームの製造方法は、前記請求項2に記載の製
造方法について、補強桁の凹部を形成する互いに対向す
る壁面に、補強部材を位置決めする位置決め用突出部を
一体に成形し、補強部材をこの位置決め用突出部に当接
させて位置決めしながらその両端面を前記壁面に突き合
わせて溶接することとしたので、以下のような優れた効
果が得られた。すなわち、補強部材を容易に補強桁に位
置決めすることができるから、例えばロボットによる自
動溶接も容易に行うことができ、生産性をさらに向上さ
せることができる。一方、位置決め用突出部は、補強桁
を押し出し成形する際に同時に一体成形すれば良いか
ら、加工工数を増加させること無く設けることができ
る。According to a third aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile according to the second aspect of the present invention, wherein the reinforcing member is provided on the mutually facing wall surfaces forming the concave portions of the reinforcing girder. Since the positioning projections for positioning are integrally formed and the reinforcing member is abutted against the positioning projections and positioned and welded by abutting both end surfaces to the wall surface, the following excellent features are provided. The effect was obtained. That is, since the reinforcing member can be easily positioned on the reinforcing girder, for example, automatic welding by a robot can be easily performed, and the productivity can be further improved. On the other hand, since the positioning projections may be integrally formed at the same time as the extrusion of the reinforcing girder, they can be provided without increasing the number of processing steps.
【0030】本発明の請求項4に記載の自動車用バンパ
ービームの製造方法は、前記請求項3に記載の製造方法
について、補強桁および補強部材の突き合わせ部に、互
いに当接しながら外側表面に突出する突出部を補強桁お
よび補強部材のそれぞれに一体に成形し、これらの突出
部を互いに当接させた状態で加熱溶融して補強桁に補強
部材を溶接することとしたので、以下のような優れた効
果が得られた。すなわち、補強部材の補強桁に対する位
置決めをより容易に行うことができるとともに、補強桁
および補強部材に設けられた突出部の先端を容易に加熱
することができ、さらにはこれらの突出部の母材を溶融
して接合することにより補強桁と補強部材とを一層強固
に溶接することができて、自動車用バンパービームの強
度を向上させることができる。According to a fourth aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile according to the third aspect of the present invention, wherein the abutting portion of the reinforcing girder and the reinforcing member protrudes from the outer surface while abutting each other. The projecting portion to be formed is integrally formed with each of the reinforcing girder and the reinforcing member, and the reinforcing member is welded to the reinforcing girder by heating and melting while the projecting portions are in contact with each other. Excellent effect was obtained. In other words, the positioning of the reinforcing member with respect to the reinforcing girder can be performed more easily, and the tips of the protruding portions provided on the reinforcing girder and the reinforcing member can be easily heated. By melting and joining, the reinforcing girder and the reinforcing member can be more firmly welded, and the strength of the automotive bumper beam can be improved.
【0031】本発明の請求項5に記載の自動車用バンパ
ービームの製造方法は、前記請求項3に記載の製造方法
について、補強桁および補強部材の突き合わせ部に鋭角
の溶接の開先を互いに対向して形成する傾斜面を、補強
桁および補強部材のそれぞれに一体に成形し、かつ開先
に向け突き合わせ面に沿ってレーザー光を照射して、補
強桁に補強部材をレーザー溶接することとしたので、以
下のような優れた効果が得られた。すなわち、開先に向
けて突き合わせ面に沿ってレーザー光を照射すると、レ
ーザー光は開先の傾斜面で反射して開先の先端に集中す
る。これにより、補強桁と補強部材の突き合わせ部が集
中的に加熱されるので、補強桁と補強部材を効率よく加
熱することができるとともに、母材を溶融させて両者を
一層強固に溶接することができる。According to a fifth aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile according to the third aspect of the present invention, wherein a sharpened welding groove is opposed to a butt portion of a reinforcing girder and a reinforcing member. The inclined surface to be formed is formed integrally with each of the reinforcing girder and the reinforcing member, and a laser beam is irradiated along the abutting surface toward the groove, and the reinforcing member is laser-welded to the reinforcing girder. Therefore, the following excellent effects were obtained. That is, when the laser light is irradiated along the abutting surface toward the groove, the laser light is reflected on the inclined surface of the groove and concentrated on the tip of the groove. As a result, the butting portion of the reinforcing girder and the reinforcing member is intensively heated, so that the reinforcing girder and the reinforcing member can be efficiently heated, and the base material is melted and the two are more strongly welded. it can.
【0032】本発明の請求項6に記載の自動車用バンパ
ービームの製造方法は、前記請求項3に記載の製造方法
について、補強桁および補強部材の突き合わせ部に突き
合わせ面を跨いで押し出し方向に延びる溝部を互いに対
向して形成する段部を、補強桁および補強部材のそれぞ
れに一体に成形し、この溝部に溶加材を保持させながら
補強桁に補強部材を溶接することとしたので、容易に溶
接作業を行うことができることとなった。According to a sixth aspect of the present invention, there is provided a method of manufacturing a bumper beam for an automobile according to the third aspect of the present invention, wherein the bumper beam extends in a pushing direction across a butt surface of a butt portion of the reinforcing girder and the reinforcing member. Steps forming grooves facing each other are integrally formed with the reinforcing girder and the reinforcing member, and the reinforcing member is welded to the reinforcing girder while holding the filler material in this groove, so that it can be easily formed. We can now perform welding work.
【図1】本発明の請求項1に係る自動車用バンパービー
ムの一実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of an automobile bumper beam according to claim 1 of the present invention.
【図2】本発明の請求項1に係る自動車用バンパービー
ムの一実施例を示す断面図である。FIG. 2 is a sectional view showing one embodiment of a bumper beam for an automobile according to claim 1 of the present invention.
【図3】本発明の請求項1に係る自動車用バンパービー
ムの他の実施例の要部を拡大して示す断面図である。FIG. 3 is an enlarged sectional view showing a main part of another embodiment of the automotive bumper beam according to claim 1 of the present invention.
【図4】本発明の請求項1に係る自動車用バンパービー
ムの他の実施例の要部を拡大して示す断面図である。FIG. 4 is an enlarged sectional view showing a main part of another embodiment of the automotive bumper beam according to claim 1 of the present invention.
【図5】本発明の請求項3に係る自動車用バンパービー
ムの製造方法により製造されるバンパービームの一実施
例を示す断面図である。FIG. 5 is a sectional view showing one embodiment of a bumper beam manufactured by the method for manufacturing a bumper beam for an automobile according to claim 3 of the present invention.
【図6】本発明の請求項4に係る自動車用バンパービー
ムの製造方法により製造されるバンパービームの一実施
例を示す断面図である。FIG. 6 is a sectional view showing one embodiment of a bumper beam manufactured by the method for manufacturing a bumper beam for an automobile according to claim 4 of the present invention.
【図7】本発明の請求項5に係る自動車用バンパービー
ムの製造方法により製造されるバンパービームの一実施
例を示す断面図である。FIG. 7 is a sectional view showing one embodiment of a bumper beam manufactured by the method for manufacturing a bumper beam for an automobile according to claim 5 of the present invention.
【図8】本発明の請求項5に係る自動車用バンパービー
ムの製造方法により製造されるバンパービームの一実施
例の要部を拡大して示す説明図である。FIG. 8 is an enlarged explanatory view showing a main part of an embodiment of a bumper beam manufactured by the method for manufacturing a bumper beam for an automobile according to claim 5 of the present invention.
【図9】本発明の請求項6に係る自動車用バンパービー
ムの製造方法により製造されるバンパービームの一実施
例を示す説明図である。FIG. 9 is an explanatory view showing one embodiment of a bumper beam manufactured by the method for manufacturing an automobile bumper beam according to claim 6 of the present invention.
【図10】従来例の自動車用バンパービームを示す斜視
図である。FIG. 10 is a perspective view showing a conventional bumper beam for an automobile.
【図11】従来例の自動車用バンパービームを示す断面
図である。FIG. 11 is a sectional view showing a conventional bumper beam for an automobile.
10 実施例1の自動車用バンパービーム 11 実施例1の補強桁 12 実施例1の補強部材 20 実施例2の自動車用バンパービーム 21 実施例2の補強桁 22 実施例2の補強部材 30 実施例3の自動車用バンパービーム 31 実施例3の補強桁 32 実施例3の補強部材 40 実施例4の自動車用バンパービーム 41 実施例4の補強桁 42 実施例4の補強部材 50 実施例5の自動車用バンパービーム 51 実施例5の補強桁 52 実施例5の補強部材 Reference Signs List 10 Bumper beam for vehicle of Example 1 11 Reinforcement girder of Example 1 12 Reinforcement member of Example 1 20 Bumper beam for vehicle of Example 2 21 Reinforcement girder of Example 2 22 Reinforcement member of Example 2 30 Example 3 Bumper beam for automobile 31 31 Reinforcement girder of Example 32 32 Reinforcement member of Example 40 40 Bumper beam for automobile of Example 4 41 Reinforcement girder of Example 4 42 Reinforcement member of Example 4 50 Bumper for automobile of Example 5 Beam 51 Reinforcement girder of Example 5 52 Reinforcement member of Example 5
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭56−126086(JP,A) 実開 昭61−113160(JP,U) 実開 平1−174262(JP,U) 実開 昭63−98889(JP,U) 実開 昭60−184754(JP,U) 実開 昭62−83769(JP,U) (58)調査した分野(Int.Cl.7,DB名) B60R 19/04 B60R 19/03 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-56-128686 (JP, A) JP-A-61-113160 (JP, U) JP-A-1-174262 (JP, U) JP-A-63 98889 (JP, U) Japanese Utility Model Showa 60-184754 (JP, U) Japanese Utility Model Showa 62-83769 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B60R 19/04 B60R 19 / 03
Claims (6)
壁の一側どうしを一体に接続する壁を有して略コ字型断
面に押し出し成形された補強桁と、前記対向して設けら
れた一対の壁の他側どうしに一体的に接続して前記補強
桁の押し出し方向に伸びる凹部の開口を部分的に塞ぐ複
数の補強部材とを有してなり、前記複数の補強部材の間
にこれら補強部材と前記一対の壁とに囲まれた開口を形
成してなることを特徴とする自動車用バンパービーム。1. A pair of opposing walls and a pair of walls
A reinforcing girder which is extruded into substantially U-shaped cross-section with one side each other of the walls has a wall to be connected together, et al provided the counter
A pair of walls that are integrally connected to the other side of the pair of walls and partially block the opening of the recess extending in the extrusion direction of the reinforcing girder.
Ri Na and a reinforcing member number, among the plurality of reinforcing members
An opening surrounded by these reinforcing members and the pair of walls is formed.
An automobile bumper beam characterized by being formed .
壁の一側どうしを一体に接続する壁を有する略コ字型断
面の補強桁を押し出し成形し、前記対向して設けられた
一対の壁の他側どうしに一体的に接続して前記補強桁の
押し出し方向に延びる凹部の開口を部分的に塞ぐ複数の
補強部材を前記補強桁に接合し、前記複数の補強部材の
間にこれら補強部材と前記一対の壁とに囲まれた開口を
形成することを特徴とする自動車用バンパービームの製
造方法。2. A pair of opposing walls and a pair of these walls
A generally U-shaped section having a wall connecting one side of the wall together
Extrusion molding of the reinforcing girder of the surface, provided opposite the said
A plurality of reinforcing members integrally connected to the other side of the pair of walls and partially closing an opening of a concave portion extending in a pushing direction of the reinforcing girder are joined to the reinforcing girder, and
An opening surrounded by these reinforcing members and the pair of walls is provided between
Forming a bumper beam for an automobile.
対向する壁面に、前記補強部材の側面に当接して位置決
めする位置決め用突出部を一体に押し出し成形し、前記
補強部材をその幅方向の両端面が前記壁面に突き合わさ
れるように成形し、前記補強部材を前記位置決め用突出
部に当接させて位置決めしながらその両端面を前記補強
桁の前記壁面に突き合わせて溶接することを特徴とする
請求項2に記載の自動車用バンパービームの製造方法。3. A projection for positioning, which abuts on a side surface of the reinforcing member, is integrally formed on a wall surface of the reinforcing bar, which faces the concave portion, forming the concave portion. Both end faces are formed so as to abut against the wall surface, and the reinforcing member is abutted against the positioning protrusion while being positioned and welded by abutting both end surfaces to the wall surface of the reinforcing girder. The method for manufacturing a bumper beam for an automobile according to claim 2.
わせ部で互いに当接しながら外側表面から突出する突出
部を、前記補強桁および前記補強部材のそれぞれに一体
に成形し、これらの突出部を互いに当接させた状態で加
熱溶融して前記補強桁に前記補強部材を溶接することを
特徴とする請求項3に記載の自動車用バンパービームの
製造方法。4. The reinforcing girder and the reinforcing member are formed integrally with each of the reinforcing girder and the reinforcing member, and a protruding portion that protrudes from an outer surface while being in contact with each other at the abutting portion of the reinforcing girder and the reinforcing member is formed. The method for manufacturing a bumper beam for an automobile according to claim 3, wherein the reinforcing member is welded to the reinforcing girder by heating and melting in a state where the bumper beams are in contact with each other.
わせ部に鋭角に開く溶接の開先を互いに対向して形成す
る傾斜面を、前記補強桁および前記補強部材のそれぞれ
に一体に成形し、前記開先に突き合わせ面に沿ってレー
ザー光を照射して前記補強桁に前記補強部材をレーザー
溶接することを特徴とする請求項3に記載の自動車用バ
ンパービームの製造方法。5. An inclined surface for forming a welding groove that opens at an acute angle at an abutting portion of the reinforcing girder and the reinforcing member so as to face each other is integrally formed on each of the reinforcing girder and the reinforcing member, The method according to claim 3, wherein the reinforcing member is laser-welded to the reinforcing beam by irradiating the groove with a laser beam along the abutting surface.
わせ部に、突き合わせ面を跨いで押し出し方向に延びる
溝部を互いに対向して形成する段部を、前記補強桁およ
び前記補強部材のそれぞれに一体に成形し、この溝部に
溶加材を保持させながら前記補強桁に前記補強部材を溶
接することを特徴とする請求項3に記載の自動車用バン
パービームの製造方法。6. A step formed in the abutting portion of the reinforcing girder and the reinforcing member so as to oppose each other with a groove extending in the extrusion direction across the abutting surface, integrally with the reinforcing girder and the reinforcing member, respectively. The method for manufacturing a bumper beam for an automobile according to claim 3, wherein the reinforcing member is formed and welded to the reinforcing girder while holding a filler material in the groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04555893A JP3320817B2 (en) | 1993-03-05 | 1993-03-05 | Automotive bumper beam and method of manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04555893A JP3320817B2 (en) | 1993-03-05 | 1993-03-05 | Automotive bumper beam and method of manufacturing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06255433A JPH06255433A (en) | 1994-09-13 |
JP3320817B2 true JP3320817B2 (en) | 2002-09-03 |
Family
ID=12722696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP04555893A Expired - Fee Related JP3320817B2 (en) | 1993-03-05 | 1993-03-05 | Automotive bumper beam and method of manufacturing the same |
Country Status (1)
Country | Link |
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JP (1) | JP3320817B2 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4368483B2 (en) | 2000-02-28 | 2009-11-18 | 富士重工業株式会社 | Bumper beam structure |
EP1623880B1 (en) | 2003-05-14 | 2010-04-21 | Kyoraku Co., Ltd. | Shock absorber of car |
DE102004006154A1 (en) * | 2004-02-07 | 2005-08-25 | Mtu Aero Engines Gmbh | Method for connecting components |
DE102015117700A1 (en) * | 2015-10-16 | 2017-04-20 | Magna International Inc. | Cross member and method for producing a cross member |
FR3064229B1 (en) * | 2017-03-24 | 2021-06-25 | Peugeot Citroen Automobiles Sa | SPECIFIC CONFIGURATION OF A VEHICLE SHOCK ABSORPTION SYSTEM |
-
1993
- 1993-03-05 JP JP04555893A patent/JP3320817B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH06255433A (en) | 1994-09-13 |
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