JPH02299947A - Resin bumper for automobile use - Google Patents
Resin bumper for automobile useInfo
- Publication number
- JPH02299947A JPH02299947A JP3928889A JP3928889A JPH02299947A JP H02299947 A JPH02299947 A JP H02299947A JP 3928889 A JP3928889 A JP 3928889A JP 3928889 A JP3928889 A JP 3928889A JP H02299947 A JPH02299947 A JP H02299947A
- Authority
- JP
- Japan
- Prior art keywords
- bumper
- resin
- engaged
- face
- recess formed
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 55
- 239000011347 resin Substances 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 7
- 239000006260 foam Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920006380 polyphenylene oxide Polymers 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 229920001431 Long-fiber-reinforced thermoplastic Polymers 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000379 polypropylene carbonate Polymers 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、車両の前後端に取りつけられる樹脂製バンパ
ービームと、この樹脂製バンパービームの車両と反対側
の面およびその上下の面をおおう樹脂製バンパーフェー
スとを有する車両用樹脂バンパーに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a resin bumper beam that is attached to the front and rear ends of a vehicle, and a resin bumper beam that covers the surface of the resin bumper beam opposite to the vehicle and the surfaces above and below it. The present invention relates to a resin bumper for a vehicle having a resin bumper face.
〔従来の技術および解決しようとする課題〕従来の車両
用、特に自動車用バンパーは、例えば第６図の横断面に
示すように、車体に取りつけられる長方形断面の筒状の
金属製バンパービーム１と、このバンパービームｌの前
に衝突時のエネルギー吸収体として取りつけられる樹脂
発泡体２と、さらにバンパービームｌと樹脂発泡体２０
周りを取り囲むように取りつけられる弾性率１０．００
０ｋｇ／ｃｍ”以下の軟質材のバンパーフェース３とか
らなるのが一般的であるが、コストが高く重量が重いと
いう欠点を有する。特に、車体の前後端にある質量の軽
減は、車の運動性能向上のために重要なファクターであ
り、燃簀向上のためにもバンパーの軽量化が求められて
いる。[Prior Art and Problems to be Solved] Conventional bumpers for vehicles, particularly automobiles, have a cylindrical metal bumper beam 1 with a rectangular cross section attached to the vehicle body, as shown in the cross section of FIG. 6, for example. , a resin foam 2 installed in front of the bumper beam l as an energy absorber in the event of a collision, and furthermore a bumper beam l and the resin foam 20.
Elastic modulus 10.00 attached to surround
Generally, the bumper face 3 is made of a soft material with a weight of 0 kg/cm" or less, but it has the drawbacks of high cost and heavy weight. In particular, reducing the mass at the front and rear ends of the car body reduces the movement of the car. This is an important factor for improving performance, and reducing the weight of bumpers is also required to improve combustion efficiency.
最近この重い金属製バンパービームを、例えば第７図に
示すようにコの字形の軽量で弾性率の高い樹脂により置
き換える試みがなされている。しかしながら、この樹脂
製バンパーの場合、基本的に衝突時のエネルギーが樹脂
発泡体２′で吸収され、樹脂製バンパービーム１′は剛
性を高くして、極力金属製バンパービームに近づけると
いう方式のため、大幅な軽量化はむずかしくなり、しか
もコストは金属に比較してかえって高くなるという欠点
を有していた。Recently, attempts have been made to replace this heavy metal bumper beam with a lightweight, U-shaped resin having a high modulus of elasticity, as shown in FIG. 7, for example. However, in the case of this resin bumper, the energy at the time of a collision is basically absorbed by the resin foam 2', and the resin bumper beam 1' has a high rigidity and is made as close to a metal bumper beam as possible. However, it is difficult to achieve significant weight reduction, and the cost is higher than that of metal.
本発明の目的は、バンパーの大幅な軽量化を達成しなが
ら、特に軽衝突時の運動のエネルギーを吸収できる構造
の車両用樹脂バンパーを提供することである。An object of the present invention is to provide a resin bumper for a vehicle that has a structure that can absorb kinetic energy, particularly in the event of a light collision, while achieving significant weight reduction of the bumper.
上記の目的を解決するために、本発明の車両用ＨＡ脂バ
ンパーは、バンパーフェースの前壁の後面とバンパービ
ームの前壁の前面の間に空間が存在するようにバンパー
フェースの上下の壁の後縁または上下の壁の一部をバン
パービームの上下の壁の後縁または上下の壁の一部にそ
れぞれ係合させることにより構成し、バンパービームの
材料として曲弾性率４ Ｇ ＋ ０００ ｋ ｇ ／ｃ
ｖｇ ”以上の樹脂を用いかつバンパーフェースの材料
として曲弾性率１０．０００〜３０，０００ｋｇ／ｃｍ
”の樹脂を用いる。In order to solve the above object, the HA fat bumper for a vehicle of the present invention has the upper and lower walls of the bumper face so that a space exists between the rear surface of the front wall of the bumper face and the front surface of the front wall of the bumper beam. It is constructed by engaging the rear edge or part of the upper and lower walls of the bumper beam with the rear edge or part of the upper and lower walls of the bumper beam, respectively, and the material of the bumper beam has a bending modulus of elasticity of 4 G + 000 kg. /c
vg" or higher and has a bending elastic modulus of 10.000 to 30,000 kg/cm as the bumper face material.
” resin is used.
また、本発明による車両用樹脂バンパーは、バンパーフ
ェースの前壁の後面の上下の位置からそれぞれ後方へバ
ンパービームに向かって一つまたは複数のリブを突出さ
せ、これらの上下のリブを、バンパービームの上下の壁
面にリブと対応する位置に形成された凹部に係合させる
ことにより構成することもできる。Further, in the vehicle resin bumper according to the present invention, one or more ribs are respectively protruded rearward toward the bumper beam from the upper and lower positions of the rear surface of the front wall of the bumper face, and these upper and lower ribs are connected to the bumper beam. It can also be constructed by engaging recesses formed in the upper and lower wall surfaces of the ribs at positions corresponding to the ribs.
以下、本発明を実施例について図面により詳細に説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.
第１図は、本発明による車両用樹脂バンパーの一実施例
を示す横断面図である０本発明により、コの字形断面の
樹脂製バンパーフェースｌＯの前壁１２の後面とバンパ
ービーム２０の前壁２２の前面との間に空間１４が存在
するように、バンパーフェースｌＯの上下の壁１６と１
６′の後縁を樹脂製バンパービーム１０の上下の壁２４
．２４′の後縁にそれぞれ係合させかつ固定しである。FIG. 1 is a cross-sectional view showing one embodiment of a resin bumper for a vehicle according to the present invention. According to the present invention, the rear surface of the front wall 12 and the front of the bumper beam 20 of the resin bumper face 10 having a U-shaped cross section. The upper and lower walls 16 and 1 of the bumper face lO are arranged so that a space 14 exists between them and the front surface of the wall 22.
6' to the upper and lower walls 24 of the resin bumper beam 10.
．． 24' and are respectively engaged and secured to the rear edges thereof.
この実施例では、バンパービーム２０の上下の壁２４と
２４′の後縁に長手方向に延びる凹部２８．２８′が形
成され、これらの凹部２８と２８′にそれぞれバンパー
フェース１０の上下の壁１６と１６′の後縁が嵌入され
て固定されている。In this embodiment, longitudinally extending recesses 28, 28' are formed in the trailing edges of the upper and lower walls 24 and 24' of the bumper beam 20, and the upper and lower walls 16 of the bumper face 10 are formed in these recesses 28 and 28', respectively. and 16' are fitted and fixed.
バンパーフェースｌＯの前壁１２とバンパービーム２０
の前壁２２の間の空間は、前後方向のバンパー全幅の１
０〜４０％が好ましい、 １０％以下では、バンパーフ
ェースの変形によるエネルギー吸収効果が小さいので、
エネルギーの大部分をバンパービームで吸収しなければ
ならなくなるため、バンパービームが破損する恐れがあ
り、また４０％以上では、バンパービームのスペースが
小さくなるので、バンパーシステム全体の強度およびエ
ネルギー吸収能力が低くなり、さらにバンパーフェース
の永久変形量があまりにも大きくなるのでバンパーの外
観が著しく損なわれる。Front wall 12 of bumper face lO and bumper beam 20
The space between the front walls 22 of
0 to 40% is preferable. If it is less than 10%, the energy absorption effect due to deformation of the bumper face is small.
Since most of the energy has to be absorbed by the bumper beam, there is a risk of damage to the bumper beam, and above 40%, the bumper beam space is reduced, reducing the strength and energy absorption capacity of the entire bumper system. In addition, the amount of permanent deformation of the bumper face becomes so large that the appearance of the bumper is significantly impaired.
バンパービーム１１の材料として番よ、曲弾性率４０．
０００ｋｇ／ｃｍ”以上の樹脂が適しており、例えばＦ
ＲＰ 、すなわちガラス長繊維、カーボン繊維などをス
トランド状に一方向に引き揃えたもの、または不織布状
にしたもの、または布状に織ったものにエポキシ樹脂、
ポリエステル樹脂を含浸させて固めたものを含み、さら
に例えば長繊維強化熱可塑性樹脂、すなわちガラス繊維
、カーボン繊維、ナイロン繊維などの高張力繊維をマッ
ト状に積層し、または絡み合ったものにポリプロピレン
、ポリカーボネート、ポリアミド、ポリフェニレンオキ
サイド、ポリエーテルイミド、ポリエチレンなどの熱可
塑性樹脂を含浸、固化したものを含む、また、バンパー
フェース１３の材料としては、曲弾性率１０，０００〜
３０ 、０００ｋｇ／ｃｍ”の樹脂が適しており、例え
ばポリカーボネート、ポリプロピレン、ポリフェニレン
オキサイド、ポリアミド、ポリエチレンなどを含む。The material for the bumper beam 11 has a bending elastic modulus of 40.
000 kg/cm" or more is suitable, such as F
RP, that is, strands of long glass fibers, carbon fibers, etc. aligned in one direction, non-woven fabrics, or woven fabrics with epoxy resin,
Including those impregnated with polyester resin and hardened, and further, for example, long fiber reinforced thermoplastic resin, that is, high tensile fibers such as glass fiber, carbon fiber, nylon fiber, etc. are laminated in a mat shape or intertwined with polypropylene or polycarbonate. , including those impregnated and solidified with thermoplastic resins such as polyamide, polyphenylene oxide, polyetherimide, and polyethylene.The material for the bumper face 13 also has a flexural modulus of 10,000 to 10,000.
30,000 kg/cm'' resins are suitable, including, for example, polycarbonate, polypropylene, polyphenylene oxide, polyamide, polyethylene, and the like.
第１図の車両用樹脂バンパーの作用を第３図により説明
する０本発明の車両用樹脂バンパーは、特に衝突速度１
０に＋ｎ／ｈｒ以下の軽衝突に適している。前方からこ
の樹脂バンパーが何かに衝突すると、まずバンパーフェ
ース１０が変形を始め、その力を受けてバンパービーム
２０も同時に少しずつ変形を始めるが、バンパーフェー
スＩＯの前壁１２とバンパービーム２０の前壁２２との
間に空間１４がありかつバンパーフェース１０の上下の
壁１６と１６’の後縁がバンパービーム２０の凹部２８
．２８′に固定されているので、バンパービーム２０の
上壁２４が上方へ、かつ下壁２４′が下方へふくらむよ
うに変形し始める。従来のバンパーフェース材料は曲弾
性率３，０００〜６，０００ｋｇ／ｃｍ”のものが−船
釣であったので、同様な変形をしたとしても大きなエネ
ルギーの吸収は期待できなかったが、本発明のバンパー
フェースＩＯは、曲弾性率１０．０００〜３０，０００
ｋｇ／ｃｍ”の間の樹脂、好ましくは２０．０００ｋｇ
／ａｍ”以上の樹脂を使用しているので、その変形によ
り大きなエネルギーを吸収できる。The effect of the resin bumper for a vehicle shown in FIG. 1 will be explained with reference to FIG.
Suitable for light collisions of 0 to +n/hr or less. When this resin bumper collides with something from the front, the bumper face 10 begins to deform first, and the bumper beam 20 also begins to deform little by little due to the force, but the front wall 12 of the bumper face IO and the bumper beam 20 There is a space 14 between the front wall 22 and the rear edges of the upper and lower walls 16 and 16' of the bumper face 10 and the recess 28 of the bumper beam 20.
．． 28', the upper wall 24 of the bumper beam 20 begins to deform upward and the lower wall 24' deforms downward. Conventional bumper face materials had a flexural modulus of 3,000 to 6,000 kg/cm, which was used for boat fishing, so even if they were deformed in the same way, they could not be expected to absorb a large amount of energy. The bumper face IO has a bending modulus of elasticity of 10.000 to 30,000.
kg/cm” of resin, preferably 20,000 kg
Since the resin used is more than /am'', it can absorb a large amount of energy through its deformation.
このように、バンパーフェース１０の前壁１２がエネル
ギーを吸収しながら空間１４を後退し、バンパービーム
２０の前壁２２に衝突する。そノ後、バンパーフェース
１０はバンパービーム２０と共に後方へ変位するが、バ
ンパービーム２０は曲弾性率４（Ｌ ０００ｋｇ／ｃｍ
！以上の高弾性樹脂で作られていて、エネルギー吸収率
が大きいので、残りのエネルギーをバンパービーム２０
の変形およびバンパーフェース全体の゛変形により吸収
する。従来のバンパービームは極力剛性を高くして、変
形を小さくする考え方のためにバンパービーム自体のエ
ネルギー吸収、が小さかったのに対し、本発明ではバン
パービームを従来より小型化し、大きな変形により大き
なエネルギーを吸収するエネルギー吸収の主要部材とし
て構成した。このようにして、全衝突エネルギーの吸収
が完了する。In this manner, the front wall 12 of the bumper face 10 moves back through the space 14 while absorbing energy and collides with the front wall 22 of the bumper beam 20. After that, the bumper face 10 is displaced backward together with the bumper beam 20, but the bumper beam 20 has a bending elastic modulus of 4 (L 000 kg/cm
! The bumper beam is made of high elastic resin and has a high energy absorption rate, so the remaining energy is absorbed by the bumper beam 20.
It is absorbed by the deformation of the bumper face and the deformation of the entire bumper face. Conventional bumper beams have a concept of increasing rigidity as much as possible and minimizing deformation, so the energy absorption of the bumper beam itself is small.In contrast, in the present invention, the bumper beam is made smaller than before, and the energy absorption is large due to large deformation. It was constructed as a main component for energy absorption. In this way, the absorption of all collision energy is completed.
第５図は、重量１．２００ｋｇ １７１車両に、ＸＥＮ
ＯＹ （商標）のバンパーフェースとＡＺＤＥＬ（商り
のバンパービームからなる本発明の樹脂バンパーを取り
つけ、垂直な壁に速度５ＭｐＨ（２，２２ｍ／ｓ）で衝
突させたときの特性を示すグラフである。なお、この実
験では、バンパーの前後方向の幅を１２５＋ｍｍ、空間
を２０ｍ−に構成した。このグラフから、バンパーフェ
ースとバンパービームの個々の反力、これらのバンパー
フェースとバンパービームの合成された反力およびバン
パーフェースとバンパービームの両方による衝突時の吸
収エネルギーがバンパーの前面変形量に関連して分かる
。車両１ 、２００ｋｇと速度５ Ｍ Ｐ ＩＩのとき
の衝突時の必要吸収運動エネルギーは、１／２ Ｘ ｍ
ｖ” Ｘ Ｏ，７＝２１１ ｋ ｇ −ｍとなるが、前
面変形量６０ｔａ ｓで全部吸収できることが分かる。Figure 5 shows a 171 vehicle with a weight of 1.200 kg,
This is a graph showing the characteristics when a resin bumper of the present invention consisting of an OY (trademark) bumper face and an AZDEL (commercial bumper beam) is attached and collided with a vertical wall at a speed of 5 MpH (2.22 m/s). In this experiment, the longitudinal width of the bumper was 125+mm, and the space was 20m-.From this graph, the individual reaction forces of the bumper face and bumper beam, and the combined reaction force of these bumper face and bumper beam The reaction force and the energy absorbed by both the bumper face and the bumper beam during a collision can be found in relation to the amount of frontal deformation of the bumper.The required absorbed kinetic energy during a collision when the vehicle is 1, 200 kg and the speed is 5 M P II is: 1/2 x m
v"
なお、運動エネルギーに掛けた０、７は、実際にバンパ
ーが吸収するエネルギー量であり、残りの０．３は車自
身の変形、ばね要素、その他に分散して吸収されるエネ
ルギー量である。０．７の値は一般値であり、車の剛性
により０．５〜０．８の範囲を変化する。Note that the 0.7 multiplied by the kinetic energy is the amount of energy actually absorbed by the bumper, and the remaining 0.3 is the amount of energy dispersed and absorbed by the deformation of the vehicle itself, spring elements, and others. The value of 0.7 is a general value, and varies from 0.5 to 0.8 depending on the rigidity of the vehicle.
次に、第２図に本発明による樹脂バンパーの別の実施例
を同様に横断面で示す、この実施例では、バンパーフェ
ース３０の前壁３２の後面の上下位置から後方にそれぞ
れリブ３８．３８′を突出させると共に、バンパービー
ム４０の上下の壁４４．４４′にリブ３８．３８′と対
応する位置に凹部４８．４８′を形成し、リブ３８．３
８′の後縁を凹部４８．４８′に嵌入させである。Next, another embodiment of the resin bumper according to the present invention is also shown in cross section in FIG. ', and recesses 48.48' are formed in the upper and lower walls 44.44' of the bumper beam 40 at positions corresponding to the ribs 38.38'.
The rear edge of 8' is fitted into the recess 48, 48'.
この実施例の樹脂バンパーの衝突時には、第４図のよう
に始めにバンパーフェース３ｏの上下のリブ３８．３８
′が上下にふくらんで変形しでからバンパービーム４０
に当たり、その後バンパービーム４０が大きく変形して
全衝突エネルギーを吸収する。When the resin bumper of this embodiment collides, as shown in FIG.
' is swollen up and down and deformed, then the bumper beam 40
The bumper beam 40 then deforms significantly and absorbs all of the crash energy.
請求項１に記載の本発明の樹脂バンパーでは、バンパー
フェースの前壁の後面とバンパービームの前壁の前面の
間に空間が存在するようにバンパーフェースの上下の壁
の後縁または上下の壁の一部をバンパービームの上下の
壁の後縁または上下の壁の一部にそれぞれ係合させるよ
うに構成し、かつバンパーフェースの材料として従来よ
り大きい曲弾性率１０．０００ｋｇ／ｃｍ”〜３０，０
００ｋｇ／ｃｓ＋”の樹脂を用いることにより、従来エ
ネルギー吸収材料として考えられていなかったバンパー
フェースを衝突時に前記空間を後方へ変位させることに
より積極的にエネルギー吸収に利用することができ、従
って従来のエネルギー吸収材゛であった樹脂発泡材が不
要になった。In the resin bumper of the present invention according to claim 1, the rear edges of the upper and lower walls of the bumper face or the upper and lower walls are arranged such that a space exists between the rear surface of the front wall of the bumper face and the front surface of the front wall of the bumper beam. A part of the bumper face is configured to engage with the trailing edge of the upper and lower walls or a part of the upper and lower walls, respectively, and the bumper face material has a bending elastic modulus of 10.000 kg/cm" to 30 ,0
00kg/cs+'' resin, the bumper face, which had not been thought of as an energy absorbing material, can be actively used for energy absorption by displacing the space rearward during a collision, and therefore is The resin foam used as an energy absorbing material is no longer needed.
さらに、バンパービームの材料として曲弾性率４０，０
００ｋｇ／ｃｍｇ以上の樹脂を用いてエネルギーを吸収
する主要部材としたので、衝突時にバンパービームが変
形したときに従来より大きいエネルギーを吸収すること
ができる。このように、バンパーフェースで比較的小さ
い初期のエネルギーを吸収した後にバンパービームで大
きなエネルギーを吸収するように所定の高い曲弾性率の
バンパービームとバンパービ−スヲ組み合わせたので、
バンパーシステム全体で効率よくエネルギーを吸収する
ことができ、樹脂バンパーの大幅な軽量化とコストの低
減が可能になる。Furthermore, as a material for the bumper beam, the flexural modulus is 40.0.
Since the main component that absorbs energy is made of resin with a weight of 00 kg/cmg or more, it is possible to absorb more energy than before when the bumper beam is deformed during a collision. In this way, a bumper beam with a predetermined high bending elastic modulus and a bumper beam are combined so that the bumper beam absorbs a large amount of energy after the relatively small initial energy is absorbed by the bumper face.
The entire bumper system can absorb energy efficiently, making it possible to significantly reduce the weight and cost of plastic bumpers.
請求項２に記載の樹脂バンパーモ°は、バンパーフェー
スの前壁の後面の上下の位置からそれぞし後方へバンパ
ービームに向かって一つまたは複数のリプを突出させ、
これらの上下のリプを、バンパービームの上下の壁面に
リプと対応する位置に形成された凹部に係合させたので
、リプがバンパーフェースの上下の壁によりおおわれて
いるため、衝突によりリプに発生する永久変形が外部か
ら見えず、従って車の質感を損なうことがなく、またリ
プの長さ、肉厚、バンパーフェースとバンパービームの
間の空間距離を調整することにより容易に吸収エネルギ
ー量を調整できる。The resin bumper module according to claim 2 has one or more lips protruding rearward toward the bumper beam from upper and lower positions of the rear surface of the front wall of the bumper face, respectively;
Since these upper and lower lips are engaged with recesses formed in the upper and lower walls of the bumper beam at positions corresponding to the lips, the lips are covered by the upper and lower walls of the bumper face, so collisions can cause damage to the lips. The permanent deformation caused by the bumper is not visible from the outside, so it does not impair the texture of the car, and the amount of absorbed energy can be easily adjusted by adjusting the lip length, wall thickness, and spatial distance between the bumper face and bumper beam. can.
なお、一般に塗装した樹脂物品は、塗装のないものに比
べて衝撃により割れやすい、そこで本発明において、バ
ンパーフェースのみに塗装すれば、リプに割れが発生し
難いとｊｌう利点が得られる。Generally, painted resin articles are more likely to crack due to impact than unpainted ones, so in the present invention, if only the bumper face is coated, there is an advantage that cracks are less likely to occur on the bumper face.
第１図は本発明による車両用樹脂バンパーの一実施例の
横断面図、第２図は本発明による車両用樹脂バンパーの
第二の実施例の横断面図、第３図は第１図の樹脂バンパ
ーの衝突時の変形状態を示す横断面図、第４図は第２図
の樹脂バンパーの変形状態を示す横断面図、第５図は本
発明の車両用樹脂バンパーの衝突時のエネルギー吸収特
性を示すグラフ、第６図は金属製バンパービームを有す
る従来の車両用バンパーの横断面図、第７図は樹脂バン
パービームを有する従来の車両用樹脂バンパーの横断面
図である。
１０．３０・・・バンパーフェース、ｌ“２゜３２・・
・バンパーフェースの前壁、ｌ ４ 。
３４・・・空間、１６． １６’ ・・・バンパーフ
ェースの上下の壁、２０．４０・・・バンパービーム、
２２．４２・・・バンパービームの前！、２４．２４’
・・・バンパービームの上下の壁、３８．３８’
・・・リプ、４８．４８’ ・・・凹部
出 願 人： エンジニアリング
プラスチックス株式会社
第、図 第２図
第３図 第４図
第６図 第７図FIG. 1 is a cross-sectional view of one embodiment of a resin bumper for a vehicle according to the present invention, FIG. 2 is a cross-sectional view of a second embodiment of a resin bumper for a vehicle according to the present invention, and FIG. FIG. 4 is a cross-sectional view showing the deformed state of the resin bumper in a collision. FIG. 4 is a cross-sectional view showing the deformed state of the resin bumper in FIG. 2. FIG. 5 is a cross-sectional view showing the deformed state of the resin bumper of the present invention in a collision. FIG. 6 is a cross-sectional view of a conventional vehicle bumper having a metal bumper beam, and FIG. 7 is a cross-sectional view of a conventional vehicle resin bumper having a resin bumper beam. 10.30...Bumper face, l"2゜32...
・Front wall of bumper face, l 4. 34...Space, 16. 16'... Upper and lower walls of bumper face, 20.40... Bumper beam,
22.42...In front of the bumper beam! , 24.24'
...walls above and below the bumper beam, 38.38'
...Rep, 48.48' ...Concave Applicant: Engineering Plastics Co., Ltd. Figure 2 Figure 3 Figure 4 Figure 6 Figure 7
Claims (2)
ームと、この樹脂製バンパービームの車両と反対側の面
およびその上下の面をおおう樹脂製バンパーフェースと
を有する車両用樹脂バンパーにおいて、バンパーフェー
スの前壁の後面とバンパービームの前壁の前面の間に空
間が存在するようにバンパーフェースの上下の壁の後縁
または上下の壁の一部をバンパービームの上下の壁の後
縁または上下の壁の一部にそれぞれ係合させるように構
成すると共に、バンパービームの材料として曲弾性率４
０，０００ｋｇ／ｃｍ＾２以上の樹脂を用いかつバンパ
ーフェースの材料として曲弾性率１０，０００〜３０，
０００ｋｇ／ｃｍ＾２の樹脂を用いることを特徴とする
樹脂バンパー。(1) In a resin bumper for a vehicle that has a resin bumper beam that is attached to the front and rear ends of the vehicle, and a resin bumper face that covers the surface of the resin bumper beam opposite to the vehicle and the upper and lower surfaces thereof, the bumper face The rear edges of the upper and lower walls of the bumper face, or parts of the upper and lower walls, are attached to the rear edges of the upper and lower walls of the bumper beam, or the upper and lower edges of the upper and lower walls of the bumper face, so that there is a space between the rear surface of the front wall of the bumper face and the front surface of the front wall of the bumper beam. The material of the bumper beam has a flexural modulus of elasticity of 4.
Using a resin with a weight of 0,000 kg/cm^2 or more and a flexural modulus of elasticity of 10,000 to 30 as the material for the bumper face,
A resin bumper characterized by using resin of 000 kg/cm^2.
それぞれ後方へバンパービームに向かって一つまたは複
数のリブを突出させ、これらの上下のリブを、バンパー
ビームの上下の壁面にリブと対応する位置に形成された
凹部に係合させることを特徴とする、請求項１に記載の
車両用樹脂バンパー。(2) One or more ribs protrude rearward toward the bumper beam from the upper and lower positions of the rear surface of the front wall of the bumper face, and these upper and lower ribs correspond to the ribs on the upper and lower walls of the bumper beam. The resin bumper for a vehicle according to claim 1, wherein the resin bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed in a position where the bumper is engaged with a recess formed in a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed in a position where the bumper is engaged with a recess formed at a position where the bumper is engaged with a recess formed at a position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3928889A JPH02299947A (en) | 1989-02-21 | 1989-02-21 | Resin bumper for automobile use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3928889A JPH02299947A (en) | 1989-02-21 | 1989-02-21 | Resin bumper for automobile use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02299947A true JPH02299947A (en) | 1990-12-12 |
Family
ID=12548970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3928889A Pending JPH02299947A (en) | 1989-02-21 | 1989-02-21 | Resin bumper for automobile use |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02299947A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5108138A (en) * | 1990-07-12 | 1992-04-28 | Nissan Motor Co., Ltd. | Bumper structure |
| JPH0597007A (en) * | 1991-10-09 | 1993-04-20 | Japan Steel Works Ltd:The | Structure of bumper reinforcement with closed section |
| JPH0597008A (en) * | 1991-10-09 | 1993-04-20 | Japan Steel Works Ltd:The | Joining structure of bumper reinforcement |
| JPH05112190A (en) * | 1991-10-22 | 1993-05-07 | Daikyo Inc | Structure of bumper |
| JP2006329076A (en) * | 2005-05-26 | 2006-12-07 | Daikyoo Nishikawa Kk | Shock absorbing panel and its mounting structure on internal combustion engine |
| US7370893B2 (en) | 2003-05-14 | 2008-05-13 | Kyoraku Co., Ltd. | Impact absorbing member for motor vehicle |
| JP2009179134A (en) * | 2008-01-30 | 2009-08-13 | Honda Motor Co Ltd | Vehicular front bumper device |
-
1989
- 1989-02-21 JP JP3928889A patent/JPH02299947A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5108138A (en) * | 1990-07-12 | 1992-04-28 | Nissan Motor Co., Ltd. | Bumper structure |
| JPH0597007A (en) * | 1991-10-09 | 1993-04-20 | Japan Steel Works Ltd:The | Structure of bumper reinforcement with closed section |
| JPH0597008A (en) * | 1991-10-09 | 1993-04-20 | Japan Steel Works Ltd:The | Joining structure of bumper reinforcement |
| JPH05112190A (en) * | 1991-10-22 | 1993-05-07 | Daikyo Inc | Structure of bumper |
| US7370893B2 (en) | 2003-05-14 | 2008-05-13 | Kyoraku Co., Ltd. | Impact absorbing member for motor vehicle |
| JP2006329076A (en) * | 2005-05-26 | 2006-12-07 | Daikyoo Nishikawa Kk | Shock absorbing panel and its mounting structure on internal combustion engine |
| JP4657809B2 (en) * | 2005-05-26 | 2011-03-23 | ダイキョーニシカワ株式会社 | Mounting structure of shock absorbing panel to internal combustion engine |
| JP2009179134A (en) * | 2008-01-30 | 2009-08-13 | Honda Motor Co Ltd | Vehicular front bumper device |
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