JPH0939694A - Bumper beam - Google Patents
Bumper beamInfo
- Publication number
- JPH0939694A JPH0939694A JP19865495A JP19865495A JPH0939694A JP H0939694 A JPH0939694 A JP H0939694A JP 19865495 A JP19865495 A JP 19865495A JP 19865495 A JP19865495 A JP 19865495A JP H0939694 A JPH0939694 A JP H0939694A
- Authority
- JP
- Japan
- Prior art keywords
- main body
- filling
- hollow
- beam main
- members
- 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
- 239000000463 material Substances 0.000 claims abstract description 21
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 5
- 239000000057 synthetic resin Substances 0.000 claims abstract description 5
- 239000006096 absorbing agent Substances 0.000 abstract description 25
- 230000035939 shock Effects 0.000 abstract description 2
- 239000006260 foam Substances 0.000 abstract 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 229920006328 Styrofoam Polymers 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 7
- 239000008261 styrofoam Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000956 alloy Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000005187 foaming Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004794 expanded polystyrene Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Body Structure For Vehicles (AREA)
- Vibration Dampers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車等に用いら
れる中空形材からなるバンパービームに関し、特にビー
ムのコーナー部付近を補強した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 made of a hollow material used in automobiles and the like, and more particularly to a bumper beam reinforced near the corners of the beam.
【０００２】[0002]
【従来の技術】図４に示すように、自動車の車体１５１
の前後には、バンパービーム１０１又は１０２が設けら
れている。これらのバンパービーム１０１，１０２は、
自動車の衝突時の衝撃を緩和するが、その耐衝撃性は、
通常ペンデュラム衝撃試験によって確認される。すなわ
ち、図５に示すように、重錘２０１をリンク２０２，２
０２で吊り下げ、図示しない駆動源により所定高さまで
持ち上げて放し、振り子のように振らせてバンパービー
ム１０１に衝突させ、そのときの破壊の程度により耐衝
撃性能を確認するのである。ところで、従来のアルミニ
ウム又はアルミニウム合金の中空形材からなるバンパー
ビームのコーナー部Ｃは、耐衝撃性を向上させるため、
車体１５１側に曲げる曲げ加工を施したり、あるいは、
このように曲げ加工したコーナー部Ｃの端部に、例えば
アルミニウム又はアルミニウム合金からなる板材等を溶
接したりして補強を行うのが一般的であった。2. Description of the Related Art As shown in FIG.
Bumper beams 101 or 102 are provided in front of and behind. These bumper beams 101 and 102 are
It reduces the impact of a car collision, but its impact resistance is
Usually confirmed by pendulum impact test. That is, as shown in FIG. 5, the weight 201 is connected to the links 202, 2
It is suspended by 02, lifted up to a predetermined height by a driving source (not shown), released, swung like a pendulum and collided with the bumper beam 101, and the impact resistance performance is confirmed by the degree of destruction at that time. By the way, in order to improve impact resistance, the corner portion C of the conventional bumper beam made of aluminum or an aluminum alloy hollow shape member is
Bending to bend to the car body 151 side, or
In general, a plate member made of aluminum or an aluminum alloy is welded to the end portion of the corner portion C bent in this way for reinforcement.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来のバンパービームでは、何れも加工コストが高くな
り、加工の手間もかかるという問題点があった。However, each of the above-mentioned conventional bumper beams has a problem that the processing cost is high and the processing is time-consuming.
【０００４】本発明は、このような問題を解決するため
になされたものであり、本発明の解決しようとする課題
は、十分な耐衝撃性を有するとともに、加工が容易でか
つ加工コストがより低廉なバンパービームを提供するこ
とにある。The present invention has been made in order to solve such a problem, and the problem to be solved by the present invention is that it has sufficient impact resistance and is easy to process and more cost-effective. It is to provide an inexpensive bumper beam.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するた
め、請求項１の発明によるバンパービームは、中空形材
からなる梁部材（１１，２１，３１）の少なくともコー
ナー部（Ｃ１，Ｃ２，Ｃ３）付近（すなわち両端部分）
に、発泡性合成樹脂材料からなる充填部材（１２，２
２，３２）を挿入ないし充填したことを特徴とする。In order to solve the above-mentioned problems, a bumper beam according to the invention of claim 1 has at least corner portions (C1, C2, C3) of a beam member (11, 21, 31) made of a hollow shape member. ) Near (that is, both ends)
And a filling member (12, 2) made of a foamable synthetic resin material.
2, 32) are inserted or filled.
【０００６】また、請求項２の発明によるバンパービー
ムは、請求項１に記載のバンパービームにおいて、前記
梁部材（１１）の軸方向形状が直線状であることを特徴
としている。A bumper beam according to a second aspect of the present invention is the bumper beam according to the first aspect, characterized in that the beam member (11) has a linear shape in the axial direction.
【０００７】[0007]
【発明の実施の形態】以下、図面等を参照しながら、本
発明の実施の形態の例を挙げて、本発明を詳細に説明す
る。図１は、本発明に係る自動車用のバンパービームの
第１実施形態の構成を示す正面図及び側面図である。図
に示すように、このバンパービーム１０は、中空形材か
らなる梁部材であるビーム本体１１と、このビーム本体
１１の両コーナー部Ｃ１，Ｃ１内に設けられた充填部材
である１対のアブソーバ１２，１２と、ビーム本体１１
を自動車の車体等に取り付けるための１対の取付部材１
３，１３とから構成されている。ビーム本体１１は、例
えばアルミニウム合金６１Ｓ−Ｔ６材からなる軸方向に
直線状の真直梁であり、両端が開放され、「目」の字状
の中空断面を有するいわゆるトリプルホロービームであ
る。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings and the like by giving examples of the embodiments of the present invention. FIG. 1 is a front view and a side view showing a configuration of a first embodiment of a bumper beam for an automobile according to the present invention. As shown in the figure, the bumper beam 10 includes a beam main body 11 which is a beam member made of a hollow shape member, and a pair of absorbers which are filling members provided in both corners C1 and C1 of the beam main body 11. 12, 12 and the beam body 11
Pair of mounting members for mounting the vehicle to the body of the automobile, etc.
It is composed of 3 and 13. The beam main body 11 is a so-called triple hollow beam made of, for example, an aluminum alloy 61S-T6 material, which is a straight beam that is linear in the axial direction and is open at both ends and has a hollow cross section in the shape of an "eye".
【０００８】アブソーバ１２は、上記のビーム本体１１
の目字状中空部のそれぞれに挿入される３つの充填部材
１２ａ，１２ｂ，１２ｃにより構成されている。これら
の充填部材１２ａ〜１２ｃは、発泡率が１５倍の発泡ス
チロール材を直方体状に裁断して成形したものであり、
その断面は上記した目の字状中空部とほぼ同じか、ある
いは目の字状中空部よりわずかに大きく設定され、その
長さはビーム本体１１の開放端と取付部材との間の距離
とほぼ等しく設定されている。この実施例では、充填部
材１２ａ〜１２ｃの長さはほぼ２００mmである。The absorber 12 is composed of the beam body 11 described above.
It is composed of three filling members 12a, 12b, 12c inserted into the respective eye-shaped hollow portions. These filling members 12a to 12c are formed by cutting a styrofoam material having a foaming rate of 15 times into a rectangular parallelepiped shape,
The cross section thereof is set to be substantially the same as the above-mentioned eye-shaped hollow portion or slightly larger than the eye-shaped hollow portion, and its length is almost equal to the distance between the open end of the beam body 11 and the mounting member. Are set equal. In this embodiment, the length of the filling members 12a-12c is approximately 200 mm.
【０００９】これらの充填部材１２ａ〜１２ｃは、ビー
ム本体１１の開放端から押し込まれ、各中空部を隙間無
く充填し、全体がビーム本体１１内に収納されるまで挿
入される。充填部材１２ａ〜１２ｃの全体がビーム本体
１１内に押し込まれると、その先端は取付部材１３の近
傍に達する。このようにして、ビーム本体１１の両方の
コーナー部の内部に発泡スチロール製のアブソーバ１
２，１２を設置した場合の耐衝撃性試験結果を表−１に
示す。These filling members 12a to 12c are pushed in from the open end of the beam main body 11 to fill each hollow portion without a gap and are inserted until the whole is housed in the beam main body 11. When the entire filling members 12a to 12c are pushed into the beam main body 11, the tips thereof reach the vicinity of the mounting member 13. In this way, the absorber 1 made of styrofoam is provided inside both corners of the beam body 11.
Table 1 shows the impact resistance test results when 2 and 12 were installed.
【００１０】 [0010]
【００１１】表−１において、最大荷重，変位量，吸収
エネルギ及び製造コストは、第１実施例のサンプルにつ
いてのものを１とした場合の比で示されている。上表に
示すように、ビーム本体１１の両方のコーナー部Ｃ１，
Ｃ１の内部に発泡スチロール製のアブソーバ１２，１２
を設置すると、中空部がアブソーバ１２によって充填さ
れているので、何も処置していない中空状態のバンパー
ビームに比べ、耐衝撃性能が向上する。すなわち、コー
ナー部に曲げ加工を施した中空バンパービーム（従来例
１）や、コーナー部に曲げ加工を施すとともに両端に補
強板材を溶接した中空バンパービーム（従来例２）と比
べると、衝撃に耐え得る最大荷重、衝撃後の変位量、変
形することによって吸収したエネルギ量のいずれの点に
おいても、第１実施形態のバンパービームは各従来例と
遜色はない。しかし、製造コストの比（第１実施形態の
見本の製造コストを１とした場合の比）をみると、第１
実施形態のバンパービームは従来例よりも著しく低コス
トになっている。これは、第１実施形態のバンパービー
ム１０は、真直梁であり、アブソーバは予め加工された
部材を単に中空部に挿入するだけでよいためである。In Table 1, the maximum load, the amount of displacement, the absorbed energy and the manufacturing cost are shown as a ratio when the sample of the first embodiment is set to 1. As shown in the table above, both corners C1 of the beam body 11 are
Inside the C1, styrofoam absorbers 12, 12
Since the hollow portion is filled with the absorber 12, the impact resistance performance is improved as compared with the hollow bumper beam in which nothing is treated. That is, compared with a hollow bumper beam with a bent corner (conventional example 1) or a hollow bumper beam with bent corners and reinforcing plates welded at both ends (conventional example 2), it is more shock resistant. The bumper beam of the first embodiment is comparable to the conventional examples in terms of the maximum load to be obtained, the amount of displacement after impact, and the amount of energy absorbed by deformation. However, looking at the manufacturing cost ratio (the ratio when the manufacturing cost of the sample of the first embodiment is 1),
The bumper beam of the embodiment has a significantly lower cost than the conventional example. This is because the bumper beam 10 of the first embodiment is a straight beam, and the absorber may simply insert a pre-machined member into the hollow portion.
【００１２】次に、本発明の第２実施形態であるバンパ
ービームについて、図２を参照しつつ説明する。図に示
すように、このバンパービーム２０は、中空形材からな
る梁部材であるビーム本体２１と、このビーム本体２１
の両コーナー部Ｃ２，Ｃ２内に設けられた充填部材であ
る１対のアブソーバ２２，２２と、ビーム本体２１を自
動車の車体等に取り付けるための１対の取付部材２３，
２３とから構成されている。ビーム本体２１は、例えば
アルミニウム合金６１Ｓ−Ｔ６材からなり、両端が開放
され、両コーナー部Ｃ２，Ｃ２が曲げ加工された梁状部
材であり、「ロ」の字状の中空断面を有するいわゆるシ
ングルホロービームである。Next, a bumper beam which is a second embodiment of the present invention will be described with reference to FIG. As shown in the figure, the bumper beam 20 includes a beam main body 21 which is a beam member made of a hollow shape member and a beam main body 21.
A pair of absorbers 22, 22, which are filling members provided in both corners C2, C2, and a pair of mounting members 23 for mounting the beam main body 21 on the vehicle body of an automobile,
23. The beam main body 21 is a beam-shaped member made of, for example, an aluminum alloy 61S-T6 material, both ends of which are open, and both corner portions C2 and C2 are bent, and is a so-called single having a hollow cross-section of "B". It is a hollow beam.
【００１３】アブソーバ２２は、発泡率が１５倍の発泡
スチロール材を直方体状に成形したものであり、その断
面は上記したロ字状中空部と同じかそれよりわずかに大
きく設定され、その長さはビーム本体２１の開放端と取
付部材との間の距離と等しく設定されている。The absorber 22 is formed of a styrofoam material having a foaming ratio of 15 times in the shape of a rectangular parallelepiped, and its cross section is set to be the same as or slightly larger than the square hollow portion described above, and its length is It is set equal to the distance between the open end of the beam body 21 and the mounting member.
【００１４】アブソーバ２２は、ビーム本体２１の開放
端から押し込まれ、ロの字状中空部を隙間無く充填し、
全体がビーム本体２１内に収納されるまで挿入される。
アブソーバ２２全体がビーム本体２１内に押し込まれる
と、その先端は取付部材２３の近傍に達する。The absorber 22 is pushed in from the open end of the beam main body 21 to fill the square hollow portion without any gap,
The whole is inserted until it is housed in the beam body 21.
When the entire absorber 22 is pushed into the beam body 21, its tip reaches the vicinity of the mounting member 23.
【００１５】このようにして、コーナー部Ｃ２，Ｃ２が
曲げ加工されたビーム本体２１の両方のコーナー部Ｃ
２，Ｃ２の内部に発泡スチロール製のアブソーバ２２，
２２を設置すると、何も処置していない中空状態のバン
パービームに比べ、耐衝撃性能が向上する。また、衝撃
に耐え得る最大荷重、衝撃後の変位量、変形することに
よって吸収したエネルギ量のいずれの点においても、第
１実施形態のバンパービームよりも向上する。しかし、
製造コストは、従来例１と同様の曲げ加工を行い、さら
にアブソーバ挿入を行っているので、従来例１より高く
なる。In this way, both corner portions C of the beam main body 21 whose corner portions C2 and C2 are bent are processed.
2, the absorber 22 made of Styrofoam inside C2,
When 22 is installed, the impact resistance performance is improved as compared with the hollow bumper beam in which nothing is treated. Further, the maximum load that can withstand the impact, the amount of displacement after the impact, and the amount of energy absorbed by the deformation are improved compared to the bumper beam of the first embodiment. But,
The manufacturing cost is higher than that of Conventional Example 1 because the same bending process as that of Conventional Example 1 is performed and the absorber is inserted.
【００１６】次に、本発明の第３実施形態であるバンパ
ービームについて、図３を参照しつつ説明する。図に示
すように、このバンパービーム３０は、中空形材の梁部
材であるビーム本体３１と、このビーム本体３１の両コ
ーナー部Ｃ３，Ｃ３内に設けられた充填部材である１対
のアブソーバ３２，３２と、ビーム本体３１の両端に溶
接される補強板材３４，３４と、ビーム本体３１を自動
車の車体等に取り付けるための１対の取付部材３３，３
３とから構成されている。ビーム本体３１は、例えばア
ルミニウム合金６１Ｓ−Ｔ６材からなり、両端が開放さ
れ、両コーナー部Ｃ３，Ｃ３が曲げ加工された梁状部材
であり、「ロ」の字状の中空断面を有するいわゆるシン
グルホロービームである。Next, a bumper beam which is a third embodiment of the present invention will be described with reference to FIG. As shown in the figure, the bumper beam 30 includes a beam main body 31 which is a beam member having a hollow shape, and a pair of absorbers 32 which are filling members provided in both corners C3 and C3 of the beam main body 31. , 32, reinforcing plate members 34, 34 welded to both ends of the beam main body 31, and a pair of mounting members 33, 3 for mounting the beam main body 31 to the body of an automobile or the like.
And 3. The beam main body 31 is a beam-shaped member made of, for example, an aluminum alloy 61S-T6 material, open at both ends, and bent at both corners C3 and C3, and is a so-called single having a hollow cross-section of "B". It is a hollow beam.
【００１７】アブソーバ３２は、発泡率が１５倍の発泡
スチロール材を直方体状に成形したものであり、その断
面は上記したロの字状中空部と同じかそれよりわずかに
大きく設定され、その長さはビーム本体３１の端部と取
付部材との間の距離と等しく設定されている。The absorber 32 is formed by molding a styrofoam material having a foaming ratio of 15 times into a rectangular parallelepiped shape, and its cross section is set to be the same as or slightly larger than the above-mentioned hollow square shape and its length. Is set equal to the distance between the end of the beam body 31 and the mounting member.
【００１８】アブソーバ３２は、補強板材３４が溶接さ
れる以前にビーム本体３１の開放端から押し込まれ、ロ
の字状中空部を隙間無く充填し、全体がビーム本体３１
内に収納されるまで挿入される。アブソーバ３２全体が
ビーム本体３１内に押し込まれると、その先端は取付部
材３３の近傍に達する。そして、アブソーバ３２全体が
ビーム本体３１内に押し込まれた後、補強板材３４，３
４をビーム本体３１の両端に溶接する。The absorber 32 is pushed in from the open end of the beam main body 31 before the reinforcing plate member 34 is welded, and fills the square hollow portion without a gap, so that the whole of the beam main body 31.
It is inserted until it is stored inside. When the entire absorber 32 is pushed into the beam main body 31, its tip reaches the vicinity of the mounting member 33. After the absorber 32 is entirely pushed into the beam body 31, the reinforcing plate members 34, 3
4 are welded to both ends of the beam body 31.
【００１９】このようにして、コーナー部Ｃ３，Ｃ３が
曲げ加工されたビーム本体３１の両方のコーナー部の内
部に発泡スチロール製のアブソーバ３２，３２を設置し
てビーム本体３１の両端に補強板材３４，３４を溶接す
ると、何も処置していない中空状態のバンパービームに
比べ、耐衝撃性能が向上する。また、衝撃に耐え得る最
大荷重、衝撃後の変位量、変形することによって吸収し
たエネルギ量のいずれの点においても、第１実施形態の
バンパービームよりも向上する。しかし、製造コスト
は、従来例２と同様の曲げ加工及び両端板溶接を行い、
さらにアブソーバ挿入を行っているので、従来例２より
高くなる。In this way, styrofoam absorbers 32, 32 are installed inside both corners of the beam main body 31 whose corners C3, C3 are bent, and reinforcing plate members 34, 34 are provided at both ends of the beam main body 31. Welding 34 improves impact resistance compared to a hollow bumper beam with no treatment. Further, the maximum load that can withstand the impact, the amount of displacement after the impact, and the amount of energy absorbed by the deformation are improved compared to the bumper beam of the first embodiment. However, the manufacturing cost is the same as in Conventional Example 2, bending and welding both end plates,
Further, since the absorber is inserted, the cost is higher than that of the conventional example 2.
【００２０】なお、本発明は上記実施形態に限定される
ものではない。上記実施形態は例示であり、本発明の特
許請求の範囲に記載された技術的思想と実質的に同一な
構成を有し、同様な作用効果を奏するものは、いかなる
ものであっても本発明の技術的範囲に包含される。The present invention is not limited to the above embodiment. The above-described embodiment is merely an example, and the present invention has substantially the same configuration as the technical idea described in the scope of claims of the present invention, and has any similar effects. It is included in the technical scope of.
【００２１】例えば、上記実施形態においては、梁部材
であるビーム本体がアルミニウム合金６１Ｓ−Ｔ６材か
らなる例について説明しているが、本発明はこれには限
定されず、他の材料、例えば、その他のアルミニウム合
金材（６０００系合金，高強度６０００系合金ＳＧ０
９，７０００系合金，高強度７０００系合金ＺＫ１６
０，ＺＫ５５，ＺＫ７０等），純アルミニウム材，軟鉄
材，鋼材，ステンレス材，その他の金属材料等を用いて
もよい。For example, in the above-mentioned embodiment, an example in which the beam main body which is the beam member is made of the aluminum alloy 61S-T6 material is described, but the present invention is not limited to this, and other materials such as, for example, Other aluminum alloy materials (6000 series alloy, high strength 6000 series alloy SG0
9,7000 series alloy, high strength 7000 series alloy ZK16
0, ZK55, ZK70, etc.), pure aluminum material, soft iron material, steel material, stainless steel material, other metal material, etc. may be used.
【００２２】また、上記実施形態においては、中空断面
の梁部材の断面形状として「目」の字状のトリプルホロ
ービーム及び「ロ」の字状のシングルホロービームを例
に挙げて説明しているが、本発明はこれには限定され
ず、他の中空断面形状、例えば、「日」の字状のダブル
ホロービーム，「田」の字状の断面形状，あるいはこれ
らの外側面に補強用の突条等が設けられたものなど、中
空断面形状であればどのようなものであってもかまわな
い。Further, in the above-described embodiment, the cross-sectional shape of the beam member having the hollow cross section is described as an example of a triple hollow beam having an "eye" shape and a single hollow beam having a "b" shape. However, the present invention is not limited to this, and other hollow cross-sectional shapes, for example, a double hollow beam having a "Sun" shape, a "T" -shaped cross section shape, or a reinforcing material for the outer surface thereof may be used. Any shape may be used as long as it has a hollow cross-section, such as one provided with ridges.
【００２３】また、上記実施形態においては、充填部材
の例として、発泡スチロール材からなるアブソーバを例
に挙げて説明しているが、本発明はこれには限定され
ず、他の発泡性合成樹脂材料によって充填部材を構成し
てもよい。Further, in the above-described embodiment, an absorber made of a polystyrene foam material is described as an example of the filling member, but the present invention is not limited to this and other foamable synthetic resin materials. You may comprise a filling member by.
【００２４】そして、上記実施形態においては、充填部
材であるアブソーバの充填方法として、発泡スチロール
材から成形した挿入部材をビーム本体の中空部に挿入す
る方法を例に挙げて説明しているが、本発明はこれには
限定されず、固化していない発泡性合成樹脂材料を梁部
材の中空部へ発泡充填させた後に固化させてもよい。In the above embodiment, a method of inserting an insertion member formed of expanded polystyrene material into the hollow portion of the beam main body is described as an example of the method of filling the absorber as the filling member. The invention is not limited to this, and the foamed synthetic resin material that has not been solidified may be foamed and filled into the hollow portion of the beam member and then solidified.
【００２５】さらに、上記実施形態においては、充填部
材であるアブソーバを形成する発泡スチロール材の発泡
率を１５倍とし、充填部材の梁部材への挿入長さを梁端
から取付部材までの距離程度としたが、本発明はこれに
は限定されず、他の発泡率の充填部材を使用することが
できる。充填部材の挿入長さは他の挿入長さであって
も、あるいは梁部材の全長にわたって充填されていても
まったく問題ない。要は、充填部材は、少なくとも梁部
材の両端部分であるコーナー部付近を充填していればよ
いのである。Further, in the above-mentioned embodiment, the foaming ratio of the expanded polystyrene material forming the absorber as the filling member is set to 15 times, and the insertion length of the filling member into the beam member is about the distance from the beam end to the mounting member. However, the present invention is not limited to this, and a filling member having another foaming ratio can be used. It does not matter at all whether the insertion length of the filling member is another insertion length or that the filling member is filled over the entire length of the beam member. The point is that the filling member only needs to fill at least the corner portions that are both end portions of the beam member.
【００２６】[0026]
【発明の効果】請求項１記載の発明によれば、梁部材の
内部空間のうち少なくともコーナー部付近（両端部分）
に充填部材を設けたので、何も処置していない中空形材
からなるバンパービームに比べ、耐衝撃性能が向上す
る。また、請求項２記載の発明によれば、コーナー部に
曲げ加工を施した従来の中空断面バンパービームや、コ
ーナー部に曲げ加工を施すとともに両端に補強板材を溶
接した中空断面バンパービームと比べると、衝撃に耐え
得る最大荷重、衝撃後の変位量、変形することによって
吸収したエネルギ量の点においては、ほぼ同様の値であ
るが、軸方向形状が直線状であり加工手間が不要である
ため、従来例に比べ製造コストを著しく低くすることが
できる。According to the first aspect of the invention, at least the corners (both ends) of the internal space of the beam member are provided.
Since the filling member is provided in the, the impact resistance performance is improved as compared with the bumper beam made of a hollow shape member which is not treated. Further, according to the invention of claim 2, as compared with a conventional hollow cross-section bumper beam in which a corner portion is bent, and a hollow cross-section bumper beam in which a corner portion is bent and reinforcing plate members are welded at both ends. In terms of the maximum load that can withstand impact, the amount of displacement after impact, and the amount of energy absorbed by deformation, the values are almost the same, but since the axial shape is linear and no labor is required for processing. The manufacturing cost can be significantly reduced as compared with the conventional example.
【図１】本発明の第１実施形態であって、（Ａ）はバン
パービームの構成を示す正面図、（Ｂ）はその側面図で
ある。FIG. 1 is a first embodiment of the present invention, (A) is a front view showing the configuration of a bumper beam, and (B) is a side view thereof.
【図２】本発明の第２実施形態であるバンパービームの
構成を示す正面図である。FIG. 2 is a front view showing a configuration of a bumper beam that is a second embodiment of the present invention.
【図３】本発明の第３実施形態であるバンパービームの
構成を示す正面図である。FIG. 3 is a front view showing a configuration of a bumper beam that is a third embodiment of the present invention.
【図４】本発明のバンパービームが使用された自動車の
構成を示す概略斜視図である。FIG. 4 is a schematic perspective view showing a configuration of an automobile using the bumper beam of the present invention.
【図５】バンパービームの耐衝撃性試験を示す図であ
る。FIG. 5 is a diagram showing an impact resistance test of a bumper beam.
１０，２０，３０ バンパービーム １１，２１，３１ ビーム本体 １２，２２，３２ アブソーバ １３，２３，３３ 取付部材 ３４ 補強板材 Ｃ１，Ｃ２，Ｃ３ コーナー部 10, 20, 30 Bumper beam 11, 21, 31 Beam body 12, 22, 32 Absorber 13, 23, 33 Mounting member 34 Reinforcing plate material C1, C2, C3 Corner part
Claims (2)
端部分には、発泡性合成樹脂材料からなる充填部材が挿
入ないし充填されていることを特徴とするバンパービー
ム。1. A bumper beam, wherein a filling member made of a foamable synthetic resin material is inserted or filled into at least both end portions of a beam member made of a hollow shape member.
る、請求項１に記載のバンパービーム。2. The bumper beam according to claim 1, wherein the beam member has a linear shape in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19865495A JPH0939694A (en) | 1995-08-03 | 1995-08-03 | Bumper beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19865495A JPH0939694A (en) | 1995-08-03 | 1995-08-03 | Bumper beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0939694A true JPH0939694A (en) | 1997-02-10 |
Family
ID=16394824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19865495A Pending JPH0939694A (en) | 1995-08-03 | 1995-08-03 | Bumper beam |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0939694A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000142276A (en) * | 1998-09-04 | 2000-05-23 | Tokai Rubber Ind Ltd | Vehicle shock absorber |
| JP2008230502A (en) * | 2007-03-22 | 2008-10-02 | Nissan Diesel Motor Co Ltd | Front underrun protector |
| JP2014234147A (en) * | 2013-06-05 | 2014-12-15 | トヨタ自動車株式会社 | Vehicle body front part structure |
| JP2019130969A (en) * | 2018-01-30 | 2019-08-08 | トヨタ自動車株式会社 | Skeleton structure of vehicle front part |
-
1995
- 1995-08-03 JP JP19865495A patent/JPH0939694A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000142276A (en) * | 1998-09-04 | 2000-05-23 | Tokai Rubber Ind Ltd | Vehicle shock absorber |
| JP2008230502A (en) * | 2007-03-22 | 2008-10-02 | Nissan Diesel Motor Co Ltd | Front underrun protector |
| JP2014234147A (en) * | 2013-06-05 | 2014-12-15 | トヨタ自動車株式会社 | Vehicle body front part structure |
| JP2019130969A (en) * | 2018-01-30 | 2019-08-08 | トヨタ自動車株式会社 | Skeleton structure of vehicle front part |
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