JP2001260773A - Bumper device - Google Patents
Bumper deviceInfo
- Publication number
- JP2001260773A JP2001260773A JP2000072168A JP2000072168A JP2001260773A JP 2001260773 A JP2001260773 A JP 2001260773A JP 2000072168 A JP2000072168 A JP 2000072168A JP 2000072168 A JP2000072168 A JP 2000072168A JP 2001260773 A JP2001260773 A JP 2001260773A
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing member
- block member
- load
- pair
- vertical wall
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ポール衝突に対し
て高耐力を有する車両用バンパ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle bumper device having a high resistance to a pole collision.
【０００２】[0002]
【従来の技術】近年、車両のバンパ装置では、車両が電
柱等の支柱状のもの（ポール）と衝突するいわゆるポー
ル衝突に際して、衝突したポールがバンパ装置に対して
大きく進入してラゲージリッドやボンネット等の車両ボ
デーに損傷を与えないように対策が施されている。車両
のリヤバンパは、図８に示される如く、車体側の部材に
その長手方向（車両の幅方向）の両端が支持され、一対
の縦壁及び一対の縦壁を互いに連結する一対の横壁を有
する中空で且つ車両の幅方向において長尺状のアルミ合
金又はスチール製の補強部材１と、バンパカバー２と、
補強部材１とバンパカバー２との間の発泡樹脂製のアブ
ソーバ３と、補強部材の荷重入力側に配設された所定の
長さのブロック部材４とから構成される。車両がポール
に衝突すると、ブロック部材４に荷重Ｐ１が入力され
る。ブロック部材４は、入力された荷重Ｐ１により補強
部材１の縦壁と当接して補強部材１に荷重を伝えて補強
部材１をたわませている。尚、図中、５はラゲージ・ロ
アバックパネルの位置を示し、補強部材１はロアバック
５に対して、ｌ1 離間して配される。2. Description of the Related Art In recent years, in a so-called pole collision in which a vehicle collides with a pole (pole) such as an electric pole, the colliding pole largely enters the bumper device and a luggage lid or a hood. Measures have been taken to prevent damage to the vehicle body. As shown in FIG. 8, the rear bumper of the vehicle has both ends in the longitudinal direction (the width direction of the vehicle) supported by a member on the vehicle body side, and has a pair of vertical walls and a pair of horizontal walls connecting the pair of vertical walls to each other. A hollow aluminum alloy or steel reinforcing member 1 elongated in the width direction of the vehicle, a bumper cover 2,
It is composed of an absorber 3 made of foamed resin between the reinforcing member 1 and the bumper cover 2, and a block member 4 of a predetermined length disposed on the load input side of the reinforcing member. When the vehicle collides with the pole, the load P1 is input to the block member 4. The block member 4 is in contact with the vertical wall of the reinforcing member 1 by the input load P1 to transmit the load to the reinforcing member 1 and deflect the reinforcing member 1. In the figure, 5 indicates the position of the luggage-lower back panel, the reinforcing member 1 with respect to the lower back 5 is disposed to l 1 apart.
【０００３】ブロック部材４は、ポールと衝突した際に
入力される荷重Ｐ１を一点集中荷重から等分布荷重とす
ることで、補強部材１の折れを防ぎ、ポールの補強部材
１に対する進入量を小さくしている。又、補強部材１
は、断面幅や板厚を大きくして剛性を高くし、これによ
り、ポールと衝突した際に入力される荷重Ｐ１による補
強部材１のたわみを抑え、ポールがラゲージリッドにま
で進入しないようにしている。[0003] The block member 4 prevents the reinforcing member 1 from breaking and reduces the amount of entry of the pole into the reinforcing member 1 by changing the load P1 input upon collision with the pole from a one-point concentrated load to an evenly distributed load. are doing. Also, reinforcing member 1
Increases the rigidity by increasing the cross-sectional width and the plate thickness, thereby suppressing the deflection of the reinforcing member 1 due to the load P1 input when colliding with the pole, and preventing the pole from entering the luggage lid. I have.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記したバン
パ装置であると、補強部材１の断面幅や板厚を大きくし
ているので、補強部材１の大型化や重量増を招き、又、
補強部材１とラゲージ・ロアバックパネルとの間隔が狭
くなる。結果、補強部材１のたわみにより補強部材１と
ラゲージ・ロアバックパネルとが接触し、ラゲージ・ロ
アバックパネルの損傷を招く恐れがある。更に、補強部
材１は、図９に示されるように、車幅方向に沿って大き
な円弧となっているので、ブロック部材４は、補強部材
１とその長手方向の両端で当接する結果となり、ポール
と衝突した際に入力される荷重Ｐ１は、確実に等分布荷
重とならず、補強部材１に対して応力集中を発生させ、
結果、補強部材１の折れを発生させる恐れがある。それ
故に、本発明は前述した不具合を解消させることを、解
決すべき課題とする。However, in the above-described bumper device, since the cross-sectional width and the plate thickness of the reinforcing member 1 are increased, the size and weight of the reinforcing member 1 are increased.
The space between the reinforcing member 1 and the luggage / lower back panel is reduced. As a result, the bending of the reinforcing member 1 causes the reinforcing member 1 to come into contact with the luggage / lower back panel, which may cause damage to the luggage / lower back panel. Further, as shown in FIG. 9, the reinforcing member 1 has a large arc along the vehicle width direction, so that the block member 4 comes into contact with the reinforcing member 1 at both ends in the longitudinal direction. The load P1 input when colliding with does not reliably become an evenly distributed load, but causes a stress concentration on the reinforcing member 1,
As a result, the reinforcing member 1 may be broken. Therefore, an object of the present invention is to solve the above-mentioned problems.
【０００５】[0005]
【課題を解決するための手段】本発明は、前述した課題
を解決するために、基本的には、ブロック部材の剛性を
バンパ補強部材の剛性より大とし、荷重入力時において
ブロック部材が補強部材と当接して少なくともブロック
部材と当接する縦壁をブロック部材によって塑性変形さ
せるようにしたことである。According to the present invention, in order to solve the above-mentioned problems, basically, the rigidity of the block member is set to be larger than the rigidity of the bumper reinforcing member, and the block member is strengthened when a load is input. And at least the vertical wall in contact with the block member is plastically deformed by the block member.
【０００６】この手段の採用は、ポールと衝突した際に
入力される荷重によりブロック部材は補強部材の縦壁を
塑性変形させて、ブロック部材を補強部材内に陥没さ
せ、これにより、ブロック部材と補強部材とを実質的に
一体化させる。ブロック部材の補強部材に対する陥没
は、入力された荷重を確実に等分布荷重として補強部材
の折れを防ぎ、又、ブロック部材と補強部材とが実質的
に一体化されることで補強部材の剛性を向上させ、補強
部材の大型化や重量増を抑制する。よって、車両ボデー
等の車両側の部材の損傷を確実に防止し得る。[0006] The adoption of this means is that the block member plastically deforms the vertical wall of the reinforcing member due to the load input when the block member collides with the pole, so that the block member is depressed into the reinforcing member. The reinforcing member is substantially integrated with the reinforcing member. The depression of the block member with respect to the reinforcing member prevents the breaking of the reinforcing member as an evenly distributed load, and the rigidity of the reinforcing member is reduced by substantially integrating the block member and the reinforcing member. To improve the size and weight of the reinforcing member. Therefore, damage to members on the vehicle side such as the vehicle body can be reliably prevented.
【０００７】具体的には、本発明は、衝突時等に発生す
る荷重を受ける車両用のバンパ装置であって、一対の縦
壁及び該一対の縦壁を互いに連結する一対の横壁を有す
る中空で且つ車両の幅方向において長尺状の補強部材
と、該補強部材の荷重入力側の縦壁に近接して配設され
該縦壁と当接可能なブロック部材とを有するバンパ装置
において、ブロック部材の剛性がバンパ補強部材の剛性
より大であり、荷重入力時においてブロック部材が補強
部材と当接して少なくともブロック部材と当接する縦壁
をブロック部材によって塑性変形させるよう構成する。More specifically, the present invention relates to a bumper device for a vehicle which receives a load generated at the time of a collision or the like, and has a hollow structure having a pair of vertical walls and a pair of horizontal walls connecting the pair of vertical walls to each other. A bumper device having a long reinforcing member in the width direction of the vehicle, and a block member disposed close to the vertical wall on the load input side of the reinforcing member and capable of contacting the vertical wall. The rigidity of the member is greater than the rigidity of the bumper reinforcing member, and the block member comes into contact with the reinforcing member when a load is input, and at least the vertical wall that comes into contact with the block member is plastically deformed by the block member.
【０００８】より好ましくは、補強部材が一対の横壁間
で一対の縦壁を互いに連結する中間壁を有し、ブロック
部材と補強部材との当接部位を中間壁より上方および／
又は下方の縦壁とする、と良い。More preferably, the reinforcing member has an intermediate wall connecting the pair of vertical walls to each other between the pair of horizontal walls, and a contact portion between the block member and the reinforcing member is located above the intermediate wall and / or
Alternatively, the lower vertical wall may be used.
【０００９】[0009]
【発明の実施の形態】図１及び図２に示すように、補強
部材１は、車両の幅方向（図１示左右方向）に大きな円
弧で延びる長尺状のもので、前後一対の縦壁７，７及び
縦壁７，７を互いに連結する上下一対の横壁１１，１１
より構成された矩形の外壁からなる中空形状を呈してい
る。又、縦壁７，７は、横壁１２，１２間に位置する中
間壁６により連結されている。図１と図２に示すブロッ
ク部材８は、補強部材１と略平行に延びる所定の長さの
もので、対の脚片９，９が形成された断面チャンネル状
をなし、その脚片９が補強部材１の中間壁部６の上下の
アブソーバ３側に縦壁７に当接する形で配される。補強
部材１は、アルミ合金押し出し型材やハイテンロール
材、ハイテンプレス材からなり、ブロック部材８はスチ
ール材からなる。ブロック部材８の剛性は、その材質及
び形状から補強部材１の剛性より大とされている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a reinforcing member 1 is a long member extending in a large arc in the width direction of a vehicle (left-right direction in FIG. 1). And a pair of upper and lower horizontal walls 11, 11 connecting the vertical walls 7, 7 to each other.
It has a hollow shape composed of a rectangular outer wall constituted by the above. The vertical walls 7, 7 are connected by an intermediate wall 6 located between the horizontal walls 12, 12. The block member 8 shown in FIGS. 1 and 2 has a predetermined length extending substantially parallel to the reinforcing member 1 and has a channel-shaped cross section in which a pair of leg pieces 9 and 9 are formed. The reinforcing member 1 is arranged on the upper and lower sides of the intermediate wall 6 on the side of the absorber 3 so as to contact the vertical wall 7. The reinforcing member 1 is made of an extruded aluminum alloy material, a high-tensile roll material, or a high-tensile pressed material, and the block member 8 is made of a steel material. The rigidity of the block member 8 is set to be greater than the rigidity of the reinforcing member 1 due to its material and shape.
【００１０】図１の例において、ポールとの衝突によっ
て、ブロック部材８にポール衝突荷重Ｐ１が入力される
と、図２に仮想線で示すように、補強部材１の縦壁７を
塑性変形させながら、衝突荷重を吸収する。図２は縦壁
７を脚片９が陥没させている例を示す。In the example of FIG. 1, when a pole collision load P1 is input to the block member 8 due to a collision with the pole, the vertical wall 7 of the reinforcing member 1 is plastically deformed as shown by a virtual line in FIG. While absorbing the collision load. FIG. 2 shows an example in which the vertical wall 7 is depressed by the leg pieces 9.
【００１１】図３に示す例はブロック部材１０が中実の
もので、縦壁７との当接面を曲面としたもので、中間壁
部６より上方に配される。この例では、ポール衝突荷重
Ｐ１が入力されたブロック部材１０が縦壁７の一部を塑
性変形させてポールとの衝突荷重を吸収する。In the example shown in FIG. 3, the block member 10 is solid, and the contact surface with the vertical wall 7 is a curved surface, and is disposed above the intermediate wall portion 6. In this example, the block member 10 to which the pole collision load P1 is input absorbs the collision load with the pole by plastically deforming a part of the vertical wall 7.
【００１２】図４に示す例は、ブロック部材１０と対接
する補強部材１の縦壁７の当接部位の板厚を徐変成形等
で予め薄くし、縦壁７を塑性させ易くしたものである。
図５に示す例はブロック部材１０と対向する縦壁７の内
面にノッチ１２を入れ縦壁の塑性変形を容易とさせたも
のである。In the example shown in FIG. 4, the plate thickness of the contacting portion of the vertical wall 7 of the reinforcing member 1 which is in contact with the block member 10 is previously thinned by gradual molding or the like, so that the vertical wall 7 is easily plasticized. is there.
In the example shown in FIG. 5, a notch 12 is provided on the inner surface of the vertical wall 7 facing the block member 10 to facilitate plastic deformation of the vertical wall.
【００１３】図６に示す例は、補強部材１の縦壁７に対
の凸部１３を設け、この凸部１３に中実のブロック部材
１０を対向させたものである。この例では、ポール衝突
荷重Ｐ1 を受けた中実のブロック部材１０が凸部１３を
塑性変形させ、又は補強部材１の中空部へ陥没させ、そ
のエネルギーを吸収する。In the example shown in FIG. 6, a pair of convex portions 13 is provided on the vertical wall 7 of the reinforcing member 1, and the solid block member 10 faces the convex portions 13. In this example, the solid block member 10 which has received the pole collision load P 1 plastically deforms the convex portion 13 or sinks into the hollow portion of the reinforcing member 1 to absorb the energy.
【００１４】図７に示す例は、図６の例の凸部１３を上
方のみとし、ブロック部材１０をこの凸部１３に対向さ
せ、ポールとの衝突荷重Ｐ1 を凸部１３の塑性変形又は
その背面の中空部への陥没により吸収させるもので、凸
部１３は中間壁部６の上方に配されている。Example shown in [0014] Figure 7, a convex portion 13 of the example of FIG. 6 only the upper, are opposed to the block member 10 to the convex portion 13, plastic deformation of the convex portion 13 of an impact load P 1 of the pole or The convex portion 13 is disposed above the intermediate wall portion 6 by being absorbed by sinking into a hollow portion on the back surface.
【００１５】上記した各例では、ポール衝突荷重の入力
により、ブロック部材１０が補強部材１の縦壁７を塑性
変形させているので、ブロック部材１０は、補強部材１
内に陥没され、ブロック部材１０と補強部材１とが実質
的に一体化されている。これにより、ブロック部材１０
は、入力されたポール衝突荷重を確実に等分布荷重とし
て補強部材１に伝え、補強部材１の折れを防止すると共
に補強部材１の剛性を向上させる。図１０及び図１１に
その荷重特性を示す。図１０及び図１１に示すように、
本実施の形態においては、従来に比べて、補強部材１の
ストローク（補強部材１に対するポールの進入量）及び
たわみ量において有利なものとなる。又、補強部材１
は、縦壁７の塑性変形によるエネルギー吸収効果が期待
でき、しかも、降伏荷重のアップによるエネルギー吸収
量の増加も期待できる。In each of the above examples, the block member 10 plastically deforms the vertical wall 7 of the reinforcing member 1 by the input of the pole collision load.
The block member 10 and the reinforcing member 1 are substantially integrated. Thereby, the block member 10
Transmits the input pole collision load as an evenly distributed load to the reinforcing member 1 to prevent the reinforcing member 1 from breaking and to improve the rigidity of the reinforcing member 1. 10 and 11 show the load characteristics. As shown in FIGS. 10 and 11,
In the present embodiment, the stroke of the reinforcing member 1 (the amount of entry of the pole into the reinforcing member 1) and the amount of deflection are more advantageous than in the related art. Also, reinforcing member 1
Can expect an energy absorption effect due to plastic deformation of the vertical wall 7, and can also expect an increase in energy absorption due to an increase in yield load.
【図１】本発明の第１実施例を示す部分斜視図である。FIG. 1 is a partial perspective view showing a first embodiment of the present invention.
【図２】図１に示す例のブロック部材による補強部材の
塑性変形を示す断面図である。FIG. 2 is a sectional view showing plastic deformation of a reinforcing member by the block member of the example shown in FIG.
【図３】本発明の第２実施例を示す断面図である。FIG. 3 is a sectional view showing a second embodiment of the present invention.
【図４】本発明の第３実施例を示す断面図である。FIG. 4 is a sectional view showing a third embodiment of the present invention.
【図５】本発明の第４実施例を示す断面図である。FIG. 5 is a sectional view showing a fourth embodiment of the present invention.
【図６】本発明の第５実施例を示す断面図である。FIG. 6 is a sectional view showing a fifth embodiment of the present invention.
【図７】本発明の第６実施例を示す断面図である。FIG. 7 is a sectional view showing a sixth embodiment of the present invention.
【図８】従来のダンパ装置を示す断面図である。FIG. 8 is a sectional view showing a conventional damper device.
【図９】ポールとの衝突荷重の伝達経路を示す図であ
る。FIG. 9 is a diagram showing a transmission path of a collision load with a pole.
【図１０】本発明に係るバンパ装置の補強部材の荷重−
ストローク線図である。FIG. 10 shows the load of the reinforcing member of the bumper device according to the present invention.
It is a stroke diagram.
【図１１】本発明に係るバンパ装置の補強部材の荷重−
たわみ線図である。FIG. 11 shows a load of a reinforcing member of the bumper device according to the present invention.
It is a deflection diagram.
１ 補強部材 ２ カバー ３ アブソーバ ６ 中間壁部 ７ 縦壁 ８，１０ ブロック部材 １３ 凸部 DESCRIPTION OF SYMBOLS 1 Reinforcement member 2 Cover 3 Absorber 6 Intermediate wall part 7 Vertical wall 8,10 Block member 13 Convex part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 羽田 真一 愛知県刈谷市朝日町２丁目１番地 アイシ ン精機株式会社内 (72)発明者 神谷 剛 愛知県刈谷市朝日町２丁目１番地 アイシ ン精機株式会社内 (72)発明者 布野 和信 富山県新湊市奈呉の江12番地の３ アイシ ン軽金属株式会社内 (72)発明者 安土 一成 富山県新湊市奈呉の江12番地の３ アイシ ン軽金属株式会社内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinichi Haneda 2-1-1 Asahi-cho, Kariya-shi, Aichi Aisin Seiki Co., Ltd. (72) Inventor Tsuyoshi Kamiya 2-1-1 Asahi-cho, Kariya-shi, Aichi Aisin Seiki Inside (72) Inventor Kazunori Funo 12 Aisin Light Metal Co., Ltd. at 12 Nagoe, Shinminato City, Toyama Prefecture
Claims (2)
のバンパ装置であって、一対の縦壁及び該一対の縦壁を
互いに連結する一対の横壁を有する中空で且つ車両の幅
方向において長尺状の補強部材と、該補強部材の荷重入
力側の縦壁に近接して配設され該縦壁と当接可能なブロ
ック部材とを有するバンパ装置において、ブロック部材
の剛性がバンパ補強部材の剛性より大であり、荷重入力
時においてブロック部材が補強部材と当接して少なくと
もブロック部材と当接する縦壁をブロック部材によって
塑性変形させることを特徴とするバンパ装置。1. A bumper device for a vehicle which receives a load generated at the time of a collision or the like, comprising a pair of vertical walls and a pair of horizontal walls connecting the pair of vertical walls to each other. In a bumper device having a long reinforcing member and a block member disposed close to a vertical wall on the load input side of the reinforcing member and capable of contacting the vertical wall, the rigidity of the block member is reduced by the bumper reinforcing member. A bumper device having a rigidity greater than the rigidity of the block member, wherein at the time of load input, the block member comes into contact with the reinforcing member and at least the vertical wall in contact with the block member is plastically deformed by the block member.
互いに連結する中間壁を有し、ブロック部材と補強部材
との当接部位が中間壁より上方および／又は下方の縦壁
である、請求項１記載のバンパ装置。2. The reinforcing member has an intermediate wall connecting the pair of vertical walls to each other between the pair of horizontal walls, and a contact portion between the block member and the reinforcing member is a vertical wall above and / or below the intermediate wall. The bumper device according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000072168A JP2001260773A (en) | 2000-03-15 | 2000-03-15 | Bumper device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000072168A JP2001260773A (en) | 2000-03-15 | 2000-03-15 | Bumper device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001260773A true JP2001260773A (en) | 2001-09-26 |
Family
ID=18590634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000072168A Pending JP2001260773A (en) | 2000-03-15 | 2000-03-15 | Bumper device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001260773A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6814380B2 (en) | 2002-06-07 | 2004-11-09 | Asteer Co., Ltd. | Bumper reinforcement |
| US7712824B2 (en) | 2004-07-16 | 2010-05-11 | Komatsu Ltd. | Cab for construction machine |
-
2000
- 2000-03-15 JP JP2000072168A patent/JP2001260773A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6814380B2 (en) | 2002-06-07 | 2004-11-09 | Asteer Co., Ltd. | Bumper reinforcement |
| US7712824B2 (en) | 2004-07-16 | 2010-05-11 | Komatsu Ltd. | Cab for construction machine |
| DE112005001689B4 (en) * | 2004-07-16 | 2018-03-22 | Komatsu Ltd. | Construction cab |
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