JP2003306096A - Bumper stay structure - Google Patents
Bumper stay structureInfo
- Publication number
- JP2003306096A JP2003306096A JP2002114162A JP2002114162A JP2003306096A JP 2003306096 A JP2003306096 A JP 2003306096A JP 2002114162 A JP2002114162 A JP 2002114162A JP 2002114162 A JP2002114162 A JP 2002114162A JP 2003306096 A JP2003306096 A JP 2003306096A
- Authority
- JP
- Japan
- Prior art keywords
- section
- cross
- side member
- bumper stay
- bumper
- 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
Landscapes
- Vibration Dampers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は車体におけるサイ
ドメンバ端面とバンパレインフォースの対抗面との間に
配置されるバンパステーの構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bumper stay structure disposed between an end surface of a side member of a vehicle body and an opposing surface of a bumper reinforcement.
【０００２】[0002]
【従来の技術】自動車の車体においてバンパステーはサ
イドメンバの端部とバンパレインフォースとの間に設置
される。バンパステーはバンパに衝突荷重が加わった場
合に、サイドメンバより先に潰れることにより衝突エネ
ルギを吸収し、サイドメンバを保護する機能を意図した
ものである。図１はサイドメンバ１０の端部とバンパレ
インフォース１２との間のバンパステーを模式的に示し
ており、従来の最も通常型のバンパステー１４は通常は
（ａ）に示すように一定矩形断面の筒状であった。ま
た、(ｂ)に示すようにサイドメンバ１０側の大断面とバ
ンパレインフォース１２側の小断面とを段状に接続した
バンパステー１６や、(ｃ)に示すようにサイドメンバ１
０側の大断面からバンパレインフォース１２側の小断面
まで断面が先細状に変化するバンパステー１８も提案さ
れていた。特開平８−２７６８０４号参照。2. Description of the Related Art In an automobile body, a bumper stay is installed between an end of a side member and a bumper reinforcement. The bumper stay is intended to protect the side member by absorbing collision energy by collapsing before the side member when a collision load is applied to the bumper. FIG. 1 schematically shows a bump paste between the end of the side member 10 and the bumper reinforcement 12, and the most conventional type bump paste 14 is usually a cylinder having a constant rectangular cross section as shown in (a). It was a shape. Further, as shown in (b), a bumper stay 16 in which a large cross section on the side member 10 side and a small cross section on the bumper reinforcement 12 side are connected in a stepwise manner, and as shown in (c), the side member 1
A bumper stay 18 has also been proposed in which the cross section changes from a large cross section on the 0 side to a small cross section on the bumper reinforcement 12 side in a tapered shape. See JP-A-8-276804.
【０００３】[0003]
【発明が解決しようとする課題】図１の(ａ)に示す一定
矩形断面の筒状のバンパステー１４は稜線が荷重方向に
平行しているため衝突の際の反力が大きい（ピークを呈
する）が、その後は稜線での座屈が一気に進行するため
反力は急速に小さくなる特性を呈する。図２において曲
線ａは図１（ａ）のバンパステー１４のエネルギ吸収特
性を示す。図中Ｌはサイドメンバ１０の変形開始荷重を
示すが、特性ａにおいては反力ピークがラインＬを超え
るため車体にとって好ましくなく、またピーク後の反力
が急激に減衰するため衝突エネルギの吸収量が小さく、
充分な緩衝機能を達成しえない恐れがあった。The tubular bumper stay 14 having a constant rectangular cross section shown in FIG. 1 (a) has a large reaction force at the time of collision (has a peak) because the ridge lines are parallel to the load direction. However, after that, the buckling on the ridgeline progresses at once and the reaction force has the characteristic of rapidly decreasing. In FIG. 2, a curve a shows the energy absorption characteristic of the bump pasta 14 of FIG. In the figure, L indicates the deformation start load of the side member 10, but in the characteristic a, the reaction force peak exceeds the line L, which is not preferable for the vehicle body, and the reaction force after the peak is rapidly attenuated. Is small,
There was a fear that a sufficient buffer function could not be achieved.
【０００４】図１の（ｂ）に示す大小２段のバンパステ
ー１６の構造の場合のエネルギ吸収特性を図２の曲線ｂ
にて示し、この構造では稜線を接続する平面１６´の存
在により反力ピークは大幅に低下することが分かる。し
かしながら、反力ピーク後の荷重も小さいため、衝突時
の衝撃吸収が充分に行われず小衝突であるにも拘わらず
変形がサイドメンバに伝達されてしまい、サイドメンバ
の充分な保護をなしえない恐れがあった。The energy absorption characteristic in the case of the structure of the bumper stay 16 of large and small two stages shown in FIG. 1B is shown by the curve b in FIG.
In this structure, it can be seen that the reaction force peak is significantly reduced due to the presence of the flat surface 16 ′ connecting the ridges. However, since the load after the reaction force peak is also small, the shock is not sufficiently absorbed at the time of a collision, and the deformation is transmitted to the side member despite a small collision, so that the side member cannot be sufficiently protected. I was afraid.
【０００５】図１の（ｃ）に示すテーパ型のバンパステ
ー１８の場合は稜線が傾斜しているため、（ａ）の構造
のものより図２の曲線ｃに示すようにピークは押さえら
れる。しかしながら、以後の特性は（ａ）のバンパステ
ー１４と同様であり、反力がラインＬより相当小さいた
め吸収しうるエネルギ量が少なく、サイドメンバの充分
な保護には不十分であった。In the case of the taper type bumper stay 18 shown in FIG. 1 (c), since the ridge line is inclined, the peak is suppressed as shown by the curve c in FIG. 2 by the structure of FIG. 1 (a). However, the subsequent characteristics are similar to those of the bump paste 14 of (a), and since the reaction force is considerably smaller than the line L, the amount of energy that can be absorbed is small and it is insufficient for sufficient protection of the side members.
【０００６】この発明は以上の問題点に鑑みてなされた
ものであり、反力ピークがサイドメンバの変形開始荷重
（図２のラインＬ）より低く押さえられているにも係ら
ずピーク後の反力の値を高く維持しうるバンパステーの
構造を提供することを目的とする。The present invention has been made in view of the above problems, and although the reaction force peak is suppressed to be lower than the deformation starting load (line L in FIG. 2) of the side member, the reaction after the peak occurs. It is an object to provide a bumper stay structure capable of maintaining a high force value.
【０００７】[0007]
【課題を解決するための手段】請求項1に記載の発明に
よれば、車体におけるサイドメンバ端面とバンパレイン
フォースの対向面との間に配置されるバンパステーにお
いて、バンパレインフォース側の実質的に一定断面を呈
した第１の部分とサイドメンバに向けて徐々に拡開する
断面を呈した第２の部分とから構成されたことを特徴と
するバンパステー構造が提供される。According to the invention described in claim 1, in a bumper stay arranged between an end surface of a side member of a vehicle body and an opposing surface of the bumper reinforcement, the bumper reinforcement is substantially disposed on the side of the bumper reinforcement. There is provided a bumper stay structure comprising a first portion having a constant cross section and a second portion having a cross section that gradually expands toward a side member.
【０００８】請求項１の発明の作用・効果を説明する
と、バンパステーはバンパレインフォース側の実質的に
一定断面を呈した第１の部分とサイドメンバに向けて徐
々に増大する断面を呈した第２の部分とから構成されて
いるため、衝突時は一定断面を有したバンパレインフォ
ース側の第１の部分がサイドメンバ側の第２の部分に向
けて潜り込むように変形するためピークが押さえられ、
その後は第１の部分が折り畳まれるように変形して行く
ためピーク後の反力も大きく維持することができ、反力
をサイドメンバ変形開始荷重を超えない可及的に大きな
値に維持しうるため、理想的な衝突エネルギ吸収特性を
得ることができる。To explain the operation and effect of the invention of claim 1, the bumper stay has a first portion having a substantially constant cross-section on the bumper reinforcement side and a first portion having a cross-section gradually increasing toward the side member. Since it is composed of two parts, at the time of collision, the first part on the bumper reinforcement side having a constant cross section is deformed so as to sneak into the second part on the side member side, so that the peak is suppressed. ,
After that, since the first part deforms so as to be folded, the reaction force after the peak can be largely maintained, and the reaction force can be maintained as large as possible without exceeding the side member deformation start load. Therefore, it is possible to obtain an ideal collision energy absorption characteristic.
【０００９】請求項２に記載の発明によれば、請求項１
に記載の発明において、前記第２の部分は第１の部分と
の接合部における第１の部分と実質的に同一の断面から
サイドメンバに向けて徐々に拡開した断面形状をなすこ
とを特徴とするバンパステー構造が提供される。According to the invention described in claim 2, claim 1
In the invention described in (3), the second portion has a cross-sectional shape that gradually expands toward the side member from a cross-section substantially the same as the first portion at the joint portion with the first portion. A bumper stay structure is provided.
【００１０】請求項２の発明の作用・効果を説明する
と、バンパステーの、サイドメンバ側の第２の部分はバ
ンパレインフォース側の第１の部分の断面と同一の断面
からサイドメンバに向けて徐々に拡開する断面を有して
いるため、第１の部分と第２の部分との間に実質的に不
連続面が存在しないため、衝突の瞬間のピークを押さえ
つつその後の荷重を高く維持することができ、また、幅
方向の荷重成分に対して強い構造となっている。The operation and effect of the invention of claim 2 will be described. The second portion of the bumper stay on the side member side gradually tapers from the same cross section as the first portion on the bumper reinforcement side toward the side member. Since it has a cross-section that expands to, there is virtually no discontinuity between the first and second parts, so the peak load at the moment of collision is suppressed and the subsequent load is kept high. In addition, the structure is strong against the load component in the width direction.
【００１１】請求項３に記載の発明によれば、請求項１
若しくは２に記載の発明において、前記第１の部分と第
２の部分との接合部は断面が実質的に連続的に変化する
ように連接されていることを特徴とするバンパステー構
造が提供される。According to the invention of claim 3, claim 1
Alternatively, in the invention described in item 2, there is provided a bumper stay structure, wherein a joint portion between the first portion and the second portion is connected so that a cross section thereof changes substantially continuously. .
【００１２】請求項３の発明の作用・効果を説明する
と、バンパレインフォース側の第１の部分とサイドメン
バ側の第２の部分とは断面が実質的に連続的に変化する
ように連接されているため、ピーク後の反力をサイドメ
ンバの変形開始荷重に対して可及的に高く維持し、最大
の緩衝性能を得ることができる。The operation and effect of the third aspect of the invention will be described. The first portion on the bumper reinforcement side and the second portion on the side member side are connected so that their cross sections change substantially continuously. Therefore, the reaction force after the peak can be maintained as high as possible with respect to the deformation start load of the side member, and the maximum cushioning performance can be obtained.
【００１３】請求項４に記載の発明によれば、請求項１
から３のいずれか一項に記載の発明において、前記第１
の部分と第２の部分との接合部の近傍における第２の部
分にビードを設置したことを特徴とする車体緩衝構造が
提供される。According to the invention of claim 4, claim 1
In the invention described in any one of 1 to 3, the first
There is provided a vehicle body cushioning structure characterized in that a bead is installed in a second portion in the vicinity of a joint portion between the portion and the second portion.
【００１４】請求項４の発明の作用・効果を説明する
と、第１の部分と第２の部分との接合部の近傍にビード
を設置することにより、その寸法や数を適宜調節するこ
とにより最適なピーク反力への制御が容易となる。The operation and effect of the invention of claim 4 will be described. Optimum by installing a bead in the vicinity of the joint between the first part and the second part, and adjusting the size and number of beads appropriately. It becomes easy to control the peak reaction force.
【００１５】[0015]
【発明の実施の形態】以下この発明の実施形態としての
車体前部における車体緩衝構造を説明するが、この発明
は車体後部における緩衝のためにも役立てることができ
る。図３は車体前端部を上方より表しており、バンパレ
インフォース１２は車体幅方向に延びており、矩形断面
の金属（鉄若しくはアルミニューム）製パイプ等より成
り、両端12-1がサイドメンバ１０に向けて（車体後方に
向けて）幾分曲折されている。この発明の第１の実施形
態におけるバンパステー２０は前端がバンパレインフォ
ース１２の対向した後面にボルト固定され、バンパステ
ーの後端はサイドメンバ１０の前端にボルト止めされ
る。バンパステー２０はバンパレインフォース１２の側
の前方部２２（この発明におけるバンパステーの第１の
部分）と、サイドメンバ１０の側の後方部２４（この発
明におけるバンパステーの第２の部分）とより構成され
る。前方部２２は実質的に直方体形状をなし、その断面
は一定である。後方部２４は裁頭直錐体形状をなし、前
方部２２との接合部における前方部２２と同一の大きさ
の断面からサイドメンバ１０側に向けて徐々に拡開する
断面を有しており、かつ前方部２２と後方部２４とは断
面が実質的に連続的に変化するように接続され、換言す
れば不連続面は存在しない。即ち、この発明においては
前方部２２と後方部２４との接合部２１の近傍には図１
のｂにおいて１６´で示すような幅方向の平面は実質的
に存在しない。BEST MODE FOR CARRYING OUT THE INVENTION A vehicle body cushioning structure in a vehicle body front portion according to an embodiment of the present invention will be described below, but the present invention can also be used for cushioning a vehicle body rear portion. FIG. 3 shows the front end of the vehicle body from above. The bumper reinforcement 12 extends in the vehicle width direction and is made of a metal (iron or aluminum) pipe having a rectangular cross section. It is slightly bent towards (towards the rear of the vehicle). The front end of the bumper stay 20 according to the first embodiment of the present invention is bolted to the opposing rear surfaces of the bumper reinforcement 12, and the rear end of the bumper stay is bolted to the front end of the side member 10. The bumper stay 20 includes a front portion 22 (first portion of bumper stay in the present invention) on the side of bumper reinforcement 12 and a rear portion 24 (second portion of bumper stay in the present invention) on side member 10 side. It The front portion 22 has a substantially rectangular parallelepiped shape, and its cross section is constant. The rear part 24 has a truncated pyramid shape, and has a cross-section that gradually expands toward the side member 10 side from a cross-section of the same size as the front part 22 at the joint with the front part 22. The front portion 22 and the rear portion 24 are connected so that their cross sections change substantially continuously, in other words, there is no discontinuous surface. That is, in the present invention, the vicinity of the joint portion 21 between the front portion 22 and the rear portion 24 is shown in FIG.
There is substantially no widthwise plane in 16b of FIG.
【００１６】図４及び図５に示すようにバンパステー２
０は所定板厚の鋼板ｔより形成されている。この実施形
態では前方部２２は図３に示すようにバンパレインフォ
ース１２の両端曲折部12-1に固定されており、その曲折
角度に合致するように前方部２２におけるバンパレイン
フォース取付面22-1は傾斜面を呈している。図４に示す
ようにバンパステー２０のバンパレインフォース取付け
面22-1にボルト２６の頭部が溶接により固定されてお
り、ボルト２６のねじ部26-1が車体前方に突出してお
り、ねじ部26-1にナット２８が螺合され、これによりバ
ンパステー２０に対するバンパレインフォース１２の取
付けが行われる。一方、バンパステー２０の後部２４は
サイドメンバ１０との対抗面にフランジ24-1を形成して
おり、このフランジ24-1がサイドメンバ１０にボルト３
０にて固定されている。バンパステー２０において前方
部２２と後方部２４との接合部２１の近傍における後方
部２４の各辺にビード（溝）３２が形成されており、前
方部２２と後方部２４との接合部２１はバンパステー２
０の変形の起点となる。また、後方部２４上に形成され
るビード３２はその変形をより確実に進行させる。As shown in FIGS. 4 and 5, the bumper stay 2
0 is formed of a steel plate t having a predetermined plate thickness. In this embodiment, the front portion 22 is fixed to the bent portions 12-1 at both ends of the bumper reinforcement 12 as shown in FIG. 3, and the bumper reinforcement mounting surface 22- in the front portion 22 matches the bending angle. 1 has an inclined surface. As shown in FIG. 4, the head of the bolt 26 is fixed to the bumper reinforcement attachment surface 22-1 of the bumper stay 20 by welding, and the screw portion 26-1 of the bolt 26 projects toward the front of the vehicle body. The nut 28 is screwed into -1 to attach the bumper reinforcement 12 to the bumper stay 20. On the other hand, the rear portion 24 of the bumper stay 20 is formed with a flange 24-1 on the surface facing the side member 10, and this flange 24-1 is attached to the side member 10 by the bolts 3.
It is fixed at 0. A bump (groove) 32 is formed on each side of the rear portion 24 in the vicinity of the joint portion 21 between the front portion 22 and the rear portion 24 in the bump paste 20, and the joint portion 21 between the front portion 22 and the rear portion 24 is formed by the bump paste. Two
It becomes the starting point of the transformation of 0. Further, the bead 32 formed on the rear portion 24 allows the deformation thereof to proceed more reliably.
【００１７】図６はこの発明の実施形態のバンパステー
２０の衝突時の動作を模式的に表しており、バンパレイ
ンフォースからの（イ）に示すように衝突荷重Ｆが印加
された場合、変形の初期の過程では、前方部２２と後方
部２４との接合部２１が構造上最も弱い部分となってい
ることから、この接合部２１が変形の起点となり、最初
は（ロ）に示すように、裁頭円錐台状の後方部２４がそ
の稜線で座屈され、一定断面の前方部２２が後方部２４
に潜り込むように変形してゆく。その後の第２段階の変
形過程では、(ハ)に示すように前方部２２の稜線が折り
畳まれるように変形してゆく。図２において実線ｄがこ
の発明の実施形態のバンパステー２０のエネルギ吸収特
性を示すが、後方部２４は錐体状をなしており稜線は荷
重方向に傾斜しているため変形開始時のピーク荷重は稜
線が荷重方向と平行している図１（ａ）の構造（板厚ｔ
は同一と仮定）の場合の特性ａと比較してより押さえら
れ、サイドメンバの変形開始荷重Ｌ以下となる。ビード
３２を接合部２１の近傍における後方部２４に設置する
ことによりピーク荷重の大きさはビード３２の設計（寸
法や数）によっても調節しうる。そして、初期の後方部
２４の変形中に（ロ）に示すようにバンパステー前方部
２２は実質的に未変形のままであり、その後(ハ)に示す
ように前方部２２が折り畳まれるように変形することに
よって図２のｄ´のようにサイドメンバの変形開始荷重
Ｌの近傍まで荷重を高めることができる。そのため、こ
の発明の第１の実施形態のバンパステー２０によって素
材としての鉄板の肉厚ｔを同等に維持しつつ吸収エネル
ギの総量を増大せしめることができ、衝突時における車
体の保護の万全を図ることができる。また、一定断面の
前方部２２と拡開断面の後方部２４との接合部２１は断
面積の変化が実質的に連続であり、図１(ｂ)の１６´の
ような幅方向の平面（不連続面）が存在しないため、幅
方向の荷重成分（図４（イ）の矢印Ｆと直交する方向の
力成分）の入力に対しても高い耐久性を発揮することが
できる。FIG. 6 schematically shows the operation of the bump paste 20 according to the embodiment of the present invention at the time of a collision. When the collision load F is applied as shown in (a) from the bumper reinforcement, the deformation occurs. In the initial process, the joint portion 21 between the front portion 22 and the rear portion 24 is the weakest part in the structure, so this joint portion 21 becomes the starting point of deformation, and as shown in (b), The truncated cone-shaped rear portion 24 is buckled at its ridge, and the front portion 22 having a constant cross section is rear portion 24.
It transforms to sneak in. In the subsequent second-stage deformation process, the ridgeline of the front part 22 is deformed so as to be folded as shown in (c). In FIG. 2, the solid line d shows the energy absorption characteristics of the bumper stay 20 according to the embodiment of the present invention, but the rear portion 24 has a cone shape and the ridge line is inclined in the load direction, so the peak load at the start of deformation is The structure of FIG. 1A in which the ridge is parallel to the load direction (plate thickness t
Is assumed to be the same), and is further suppressed as compared with the characteristic a in the case of, and becomes less than the deformation start load L of the side member. By installing the bead 32 in the rear portion 24 near the joint portion 21, the magnitude of the peak load can be adjusted by the design (size and number) of the bead 32. Then, during the initial deformation of the rear part 24, the bumper stay front part 22 remains substantially undeformed as shown in (b), and then the front part 22 is deformed so as to be folded as shown in (c). By doing so, the load can be increased up to the vicinity of the deformation starting load L of the side member as indicated by d'in FIG. Therefore, the bumper stay 20 according to the first embodiment of the present invention can increase the total amount of absorbed energy while maintaining the same thickness t of the iron plate as a raw material, and protect the vehicle body in the event of a collision. You can In addition, the joint portion 21 of the front portion 22 having a constant cross section and the rear portion 24 having the expanded cross section has a substantially continuous change in cross-sectional area, and has a widthwise plane (16 'in FIG. 1B). Since there is no discontinuous surface, high durability can be exhibited even with respect to the input of the load component in the width direction (force component in the direction orthogonal to the arrow F in FIG. 4A).
【００１８】図７はこの発明の第２の実施形態のバンパ
ステー１２０を示しており、この実施形態でもバンパス
テー１２０はバンパレインフォース側の断面が一定の実
質的に直方体形状の前方部１２２（この発明におけるバ
ンパステーの第１の部分）と、前方部１２２に断面が実
質的に連続的に変化するように連接され、サイドメンバ
１０に向けて垂直方向に矩形断面の大きさが徐々に増大
する実質的に裁頭直錐体形状の後方部１２４（この発明
の第２の部分）とから構成される。この第２の実施形態
は後方部１２４は上下方向にのみ矩形断面の大きさが変
化しており、水平方向は一定のままである点が上下及び
水平の双方において断面の大きさが変化している第１の
実施形態との相違点である。この実施形態においても第
１の実施形態と同様に反力ピークを押さえるとともにピ
ーク後の荷重をサイドメンバの変形開始荷重に近似する
ように高めることができ、エネルギ吸収量を高める効果
がある。FIG. 7 shows a bumper stay 120 according to a second embodiment of the present invention. In this embodiment also, the bumper stay 120 has a substantially rectangular parallelepiped front portion 122 (the present invention having a constant cross section on the bumper reinforcement side). And a first portion of the bumper stay in the front portion 122, the cross section of which is substantially continuously changed, and the size of the rectangular cross section gradually increases in the vertical direction toward the side member 10. And a truncated cone-shaped rear portion 124 (second portion of the present invention). In this second embodiment, the size of the rectangular cross section of the rear part 124 changes only in the vertical direction, and the point that the horizontal direction remains constant is that the size of the cross section changes both vertically and horizontally. This is a difference from the first embodiment. Also in this embodiment, as in the first embodiment, the reaction force peak can be suppressed and the load after the peak can be increased so as to approximate the deformation start load of the side member, which has the effect of increasing the energy absorption amount.
【図１】図１はバンパステーの従来構造ａ〜ｃを示す概
略的上面図である。FIG. 1 is a schematic top view showing conventional structures ac of a bumper stay.
【図２】図２は衝突エネルギの吸収特性を図１の従来の
技術ａ〜ｃと本発明ｄとで比較して示す模式的グラフ。FIG. 2 is a schematic graph showing the absorption characteristics of collision energy in comparison between the conventional techniques ac of FIG. 1 and the present invention d.
【図３】図３はこの発明のバンパステーを備えた車体の
概略的平面図である。FIG. 3 is a schematic plan view of a vehicle body provided with the bumper stay of the present invention.
【図４】図４はこの発明の第１の実施形態のバンパステ
ーの概略的斜視図である。FIG. 4 is a schematic perspective view of a bump pasta according to the first embodiment of this invention.
【図５】図５は図４のＶ−Ｖ線に沿って表される断面図
である。5 is a sectional view taken along line VV of FIG.
【図６】図６はこの発明の第１の実施形態のバンパステ
ーの変形過程（イ）〜(ハ)を模式的に示す平面図であ
る。FIG. 6 is a plan view schematically showing the deformation processes (a) to (c) of the bumper stay according to the first embodiment of the present invention.
【図７】図７はこの発明の第２の実施形態のバンパステ
ーの概略的斜視図である。FIG. 7 is a schematic perspective view of a bump pasta according to a second embodiment of the present invention.
１０…サイドメンバ １２…バンパレインフォース ２０…バンパステー ２１…バンパステー前方部と後方部との接合部 ２２…バンパステー前方部 ２４…バンパステー後方部 ３２…ビード １２０…バンパステー １２２…バンパステー前方部 １２４…バンパステー後方部 10 ... Side member 12 ... Bumper reinforcement 20 ... Bum Paste 21 ... Joint between front and rear of bumper stay 22 ... Bampaste stay front 24 ... Bumpaste rear part 32 ... Bead 120 ... Bum Paste 122 ... Bumpaste front part 124 ... Bumpaste rear part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 榊原 千尋 静岡県富士市青葉町19−１ ユニプレス株 式会社内 Ｆターム(参考） 3J066 AA02 AA23 BA03 BB01 BC03 BF02 BG08 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Chihiro Sakakibara 19-1 Aobacho, Fuji City, Shizuoka Prefecture Unipres Co., Ltd. Inside the company F term (reference) 3J066 AA02 AA23 BA03 BB01 BC03 BF02 BG08
Claims (4)
レインフォースの対向面との間に配置されるバンパステ
ーにおいて、バンパレインフォース側の実質的に一定断
面を呈した第１の部分とサイドメンバに向けて徐々に拡
開する断面を呈した第２の部分とから構成されたことを
特徴とするバンパステー構造。1. In a bumper stay arranged between an end surface of a side member of a vehicle body and an opposing surface of a bumper reinforcement, a first portion and a side member having a substantially constant cross section on the bumper reinforcement side. A bumper stay structure comprising a second portion having a gradually expanding cross section.
２の部分は第１の部分との接合部における第１の部分と
実質的に同一の断面からサイドメンバに向けて徐々に拡
開した断面形状をなすことを特徴とするバンパステー構
造。2. The invention according to claim 1, wherein the second portion gradually expands toward the side member from a cross section that is substantially the same as the first portion at the joint portion with the first portion. A bumper stay structure characterized by having a cross-sectional shape.
て、前記第１の部分と第２の部分との接合部は断面が実
質的に連続的に変化するように連接されていることを特
徴とするバンパステー構造。3. The invention according to claim 1 or 2, wherein the joint portion between the first portion and the second portion is connected so that the cross section thereof changes substantially continuously. Bum paste stay structure.
発明において、前記第１の部分と第２の部分との接合部
の近傍における第２の部分にビードを設置したことを特
徴とするバンパステー構造。4. The invention according to any one of claims 1 to 3, characterized in that a bead is installed in a second portion near a joint between the first portion and the second portion. Bum paste stay structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002114162A JP2003306096A (en) | 2002-04-17 | 2002-04-17 | Bumper stay structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002114162A JP2003306096A (en) | 2002-04-17 | 2002-04-17 | Bumper stay structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003306096A true JP2003306096A (en) | 2003-10-28 |
Family
ID=29396082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002114162A Pending JP2003306096A (en) | 2002-04-17 | 2002-04-17 | Bumper stay structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003306096A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006347527A (en) * | 2004-11-24 | 2006-12-28 | Kobe Steel Ltd | Bumper device and bumper stay |
| JP2007030725A (en) * | 2005-07-28 | 2007-02-08 | Aisin Seiki Co Ltd | Impact absorbing member |
| EP1914126A1 (en) * | 2006-10-20 | 2008-04-23 | Valeo Systèmes Thermiques | Shock absorber for an automobile and front face comprising such a shock absorber |
| JP2010107027A (en) * | 2008-10-31 | 2010-05-13 | Kyoraku Co Ltd | Shock absorbing body for vehicle |
-
2002
- 2002-04-17 JP JP2002114162A patent/JP2003306096A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006347527A (en) * | 2004-11-24 | 2006-12-28 | Kobe Steel Ltd | Bumper device and bumper stay |
| JP2007030725A (en) * | 2005-07-28 | 2007-02-08 | Aisin Seiki Co Ltd | Impact absorbing member |
| EP1914126A1 (en) * | 2006-10-20 | 2008-04-23 | Valeo Systèmes Thermiques | Shock absorber for an automobile and front face comprising such a shock absorber |
| FR2907524A1 (en) * | 2006-10-20 | 2008-04-25 | Valeo Systemes Thermiques | ENERGY ABSORBER FOR MOTOR VEHICLE AND FACE HAVING SUCH A DEVICE. |
| JP2010107027A (en) * | 2008-10-31 | 2010-05-13 | Kyoraku Co Ltd | Shock absorbing body for vehicle |
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