JPH0761297A - Structure of absorbing energy applied to automobile bumper - Google Patents
Structure of absorbing energy applied to automobile bumperInfo
- Publication number
- JPH0761297A JPH0761297A JP23592593A JP23592593A JPH0761297A JP H0761297 A JPH0761297 A JP H0761297A JP 23592593 A JP23592593 A JP 23592593A JP 23592593 A JP23592593 A JP 23592593A JP H0761297 A JPH0761297 A JP H0761297A
- Authority
- JP
- Japan
- Prior art keywords
- bumper
- vehicle body
- torsion bar
- energy applied
- lever
- 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]
【産業上の利用分野】本発明は、自動車の車体に設ける
バンパに衝突の際に加わるエネルギを吸収する構造に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for absorbing energy applied to a bumper provided on a vehicle body of a vehicle during a collision.
【０００２】[0002]
【従来の技術】板ばねを湾曲して形成した２つの支持体
を車体から突出してバンパをこれら支持体に取り付け、
バンパに加わるエネルギを前記支持体によって吸収する
構造が提案されている（実開昭54-128230 号公報）。2. Description of the Related Art Two supports formed by bending a leaf spring are projected from a vehicle body and a bumper is attached to these supports.
A structure has been proposed in which the energy applied to the bumper is absorbed by the support (Japanese Utility Model Publication No. 54-128230).
【０００３】[0003]
【発明が解決しようとする課題】前記吸収構造では、支
持体が湾曲していることと、支持体が車体から前方また
は後方へ突出していることから、バンパの取付けのため
の比較的大きな空間が車体の前方または後方に必要とな
り、自動車の限られた全長を確保する場合の制約とな
る。In the absorption structure, since the support is curved and the support projects forward or rearward from the vehicle body, a relatively large space for mounting the bumper is provided. It is required in front of or behind the vehicle body, which is a constraint when securing a limited total length of the vehicle.
【０００４】本発明の目的は、制約を少なくして設計の
自由度を高めうる、自動車のバンパに加わるエネルギの
吸収構造を提供することにある。An object of the present invention is to provide a structure for absorbing energy applied to a bumper of an automobile, which can reduce restrictions and enhance design freedom.
【０００５】[0005]
【課題を解決するための手段】本発明は、自動車の車体
に設けるバンパに加わるエネルギを吸収する構造であっ
て、前記車体の幅方向へ間隔をおいた前記車体の２箇所
に固着されるトーションバーと、前記バンパが接触する
受け面を有し、該受け面の重心が前記トーションバーの
軸線から上方または下方へ間隔をおくように前記トーシ
ョンバーに固着されるレバーとを備え、該レバーの前記
受け面を前記バンパの裏面に対向させる。SUMMARY OF THE INVENTION The present invention has a structure for absorbing energy applied to a bumper provided on a vehicle body of an automobile and is fixed to two portions of the vehicle body which are spaced apart in the width direction of the vehicle body. A bar, and a lever having a receiving surface with which the bumper comes into contact, the lever being fixed to the torsion bar so that the center of gravity of the receiving surface is spaced upward or downward from the axis of the torsion bar. The receiving surface is opposed to the back surface of the bumper.
【０００６】本発明はまた、車体の幅方向へ伸びる部分
と、該部分から車体の前後方向へ伸びる２つの側部分と
を有し、平面視の形状が略Ｕ字状を呈するバンパに加わ
るエネルギを吸収する構造であって、前記バンパの前記
各側部分と前記車体との間に配置されるばねを備える。The present invention also has a portion which extends in the width direction of the vehicle body, and two side portions which extend from the portion in the front-rear direction of the vehicle body, and the energy applied to the bumper having a substantially U-shaped plan view. And a spring disposed between each side portion of the bumper and the vehicle body.
【０００７】[0007]
【作用および効果】本発明の１つの面では、バンパに衝
突エネルギのようなエネルギが加わると、バンパがレバ
ーの受け面に接触し、レバーを介してトーションバーを
ねじる。このねじりによってエネルギを吸収する。エネ
ルギが解放されると、トーションバーは復元する。In one aspect of the present invention, when energy such as collision energy is applied to the bumper, the bumper contacts the receiving surface of the lever and twists the torsion bar via the lever. Energy is absorbed by this twist. When the energy is released, the torsion bar restores.
【０００８】トーションバーは車体の幅方向へ間隔をお
いた車体の２箇所に固着すればよく、車体の前後方向ま
たは上下方向におけるトーションバーの位置の制約が少
ない。また、レバーは、受け面の重心がトーションバー
の軸線から上方または下方へ間隔をおくようにトーショ
ンバーに固着すればよく、レバーの取付け位置や形状に
ついての制約が少ない。その結果、エネルギの吸収構造
の設計の自由度を高めることができる。The torsion bar may be fixed to two positions of the vehicle body spaced apart in the width direction of the vehicle body, and there are few restrictions on the position of the torsion bar in the front-rear direction or the vertical direction of the vehicle body. Further, the lever may be fixed to the torsion bar so that the center of gravity of the receiving surface is spaced upward or downward from the axis of the torsion bar, and there are few restrictions on the mounting position and shape of the lever. As a result, the degree of freedom in designing the energy absorption structure can be increased.
【０００９】トーションバーのねじりによってエネルギ
を吸収するため、そのエネルギ吸収能力は、同じ直径の
補強材の弾性曲げ変形によるエネルギ吸収能力に比べて
大きい。換言すれば、それだけ復元性に優れることとな
る。Since the energy is absorbed by the torsion of the torsion bar, its energy absorption capacity is larger than the energy absorption capacity by the elastic bending deformation of the reinforcing member having the same diameter. In other words, the restorability is excellent.
【００１０】本発明の別の面では、車体の幅方向へ伸び
るバンパの部分にエネルギが加わり、バンパの側部分が
変形しようとすると、ばねが側部分の変形を抑えるよう
に働き、エネルギを吸収する。このように、バンパの側
部分をも含めてバンパの全体をエネルギ吸収に資するこ
とができる。In another aspect of the present invention, when energy is applied to the bumper portion extending in the width direction of the vehicle body and the side portion of the bumper is about to be deformed, the spring acts to suppress the deformation of the side portion and absorbs the energy. To do. In this way, the entire bumper including the side portion of the bumper can contribute to energy absorption.
【００１１】[0011]
【実施例】エネルギの吸収構造は、図１および図２に示
すように、自動車の車体１０に設けるバンパ１２に加わ
るエネルギを吸収する構造であって、トーションバー１
４と、レバー１６とを備える。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, an energy absorbing structure is a structure for absorbing energy applied to a bumper 12 provided on a vehicle body 10 of an automobile.
4 and a lever 16.
【００１２】バンパ１２は、プラスチックで成形した通
常使用されているものである。バンパ１２は、従来と同
様に車体の部材、たとえば、バンパアーム１８にクリッ
プ（図示せず）によって取り付ける。The bumper 12 is formed of plastic and is usually used. The bumper 12 is attached to a member of the vehicle body, for example, a bumper arm 18 by a clip (not shown) as in the conventional case.
【００１３】トーションバー１４は、車体の幅方向へ間
隔をおいた車体の２箇所に固着される。図示の実施例で
は、トーションバー１４は、円筒中実のばね鋼材によっ
て真直ぐに形成されたもので、車体の幅方向へ間隔をお
いた２つのバンパアーム１８の互いに対向する側部１９
に溶接されている。The torsion bar 14 is fixed to two portions of the vehicle body which are spaced apart in the width direction of the vehicle body. In the illustrated embodiment, the torsion bar 14 is formed straight from a cylindrical solid spring steel material, and the two side portions 19 of the two bumper arms 18 spaced apart in the width direction of the vehicle body are opposed to each other.
Is welded to.
【００１４】レバー１６は、バンパ１２が接触する受け
面２２を有し、この受け面２２の重心Ｇがトーションバ
ー１４の軸線Ｃから上方または下方へ間隔をおくように
トーションバー１４に固着される。The lever 16 has a receiving surface 22 with which the bumper 12 contacts, and is fixed to the torsion bar 14 so that the center of gravity G of the receiving surface 22 is spaced upward or downward from the axis C of the torsion bar 14. .
【００１５】図示の実施例では、レバー１６は平板を折
り曲げて形成され、立ち上り部２３と、立ち上り部２３
から伸びる伸長部２４と、伸長部２４から湾曲して下方
へ伸びる受け面２２とを有し、立ち上り部２３でトーシ
ョンバー１４に溶接されており、トーションバー１４の
上方に位置している。リブ２５が立ち上り部２３と伸長
部２４との内側に溶接され、さらに、トーションバー１
４に溶接されている。In the illustrated embodiment, the lever 16 is formed by bending a flat plate, and has a rising portion 23 and a rising portion 23.
Has a stretched portion 24 extending from the stretched portion 24, and a receiving surface 22 that curves from the stretched portion 24 and extends downward. The rising portion 23 is welded to the torsion bar 14 and is located above the torsion bar 14. The rib 25 is welded to the inside of the rising portion 23 and the extension portion 24, and further, the torsion bar 1
It is welded to 4.
【００１６】レバー１６は、受け面２２をバンパ１２の
裏面１３に対向させて所定の取付け位置となる。この場
合、受け面２２がバンパ１２の裏面１３に密接すること
は必ずしも必要ではなく、接近して位置していればよ
い。バンパ１２にエネルギが加わるとき、バンパの変形
をレバー１６の受け面２２で受け、トーションバー１４
をねじるのであるから、受け面２２は、バンパの変形に
追従しやすい形状、たとえば、円弧面とすることが好ま
しい。また、車体の幅方向へ間隔をおいて複数のレバー
１６をトーションバー１４に取り付けるようにすれば、
バンパ１２の変形に一層追従しやすくなる。The lever 16 is at a predetermined mounting position with the receiving surface 22 facing the back surface 13 of the bumper 12. In this case, it is not always necessary that the receiving surface 22 is in close contact with the back surface 13 of the bumper 12, and it is sufficient that they are located close to each other. When energy is applied to the bumper 12, the deformation of the bumper is received by the receiving surface 22 of the lever 16 and the torsion bar 14
Therefore, it is preferable that the receiving surface 22 has a shape that easily follows the deformation of the bumper, for example, an arc surface. If a plurality of levers 16 are attached to the torsion bar 14 at intervals in the width direction of the vehicle body,
It becomes easier to follow the deformation of the bumper 12.
【００１７】バンパ１２にエネルギが加わると、そのエ
ネルギの加わる方向によって、レバー１６は図１のＡま
たはＢに向けて動き、トーションバー１４をねじる。こ
の効果を得るためには、レバー１６の受け面２２の重心
Ｇが、前記実施例のように、トーションバー１４の軸線
Ｃの上方にあってもよく、または、軸線Ｃの下方にあっ
てもよい。When energy is applied to the bumper 12, the lever 16 moves toward A or B in FIG. 1 and twists the torsion bar 14 depending on the direction in which the energy is applied. In order to obtain this effect, the center of gravity G of the receiving surface 22 of the lever 16 may be above the axis C of the torsion bar 14 as in the above embodiment, or below the axis C. Good.
【００１８】図３および図４に示す実施例では、バンパ
３２は、車体３０の幅方向へ伸びる部分３４と、この部
分３４から車体の前後方向へ伸びる２つの側部分３５と
を有し、平面視の形状が略Ｕ字状を呈しており、ばね３
８がバンパ３２の各側部分３５と車体３０との間に配置
されている。In the embodiment shown in FIGS. 3 and 4, the bumper 32 has a portion 34 extending in the width direction of the vehicle body 30 and two side portions 35 extending from this portion 34 in the front-rear direction of the vehicle body and having a flat surface. The shape of the spring 3 is substantially U-shaped.
8 is arranged between each side portion 35 of the bumper 32 and the vehicle body 30.
【００１９】バンパ３２は、プラスチック製のものが復
元性に優れることから、プラスチックによって成形する
ことが好ましい。バンパ３２を２箇所の取付け部３６で
車体のバンパアーム３１に取り付けて使用するとき、た
とえば、バンパ３２の２箇所の取付け部３６間の部位に
エネルギが加わると、図３の仮想線で示すように、側部
分３５が広がる傾向がある。しかし、従来、この側部分
３５をエネルギ吸収に使用していない。The bumper 32 is preferably made of plastic because it is made of plastic because of its excellent restorability. When the bumper 32 is used by being attached to the bumper arm 31 of the vehicle body at the two mounting portions 36, for example, when energy is applied to a portion between the two mounting portions 36 of the bumper 32, as shown by phantom lines in FIG. The side portion 35 tends to spread. However, heretofore, this side portion 35 has not been used for energy absorption.
【００２０】本発明では、ばね３８をバンパ３２の側部
分３５と車体３０との間に配置し、側部分３５とばね３
８とにエネルギ吸収を分担させる。ばね３８は、図示の
実施例では、バンパ３２の側部分３５の内側面に取り付
けたブラケット４０と、車体３０の側面に取り付けたブ
ラケット４２との間に掛け渡したコイルばねである。ば
ね３８は、バンパ３２の側部分３５が広がるのを抑える
引っ張りばねとして、または側部分３５が狭まるのを抑
える圧縮ばねとして働かせることができる。In the present invention, the spring 38 is arranged between the side portion 35 of the bumper 32 and the vehicle body 30, and the side portion 35 and the spring 3 are arranged.
8 and the energy absorption are shared. In the illustrated embodiment, the spring 38 is a coil spring that is bridged between a bracket 40 attached to the inner side surface of the side portion 35 of the bumper 32 and a bracket 42 attached to the side surface of the vehicle body 30. The spring 38 can act as a tension spring that keeps the side portion 35 of the bumper 32 from expanding or as a compression spring that keeps the side portion 35 from narrowing.
【図１】本発明に係るバンパに加わるエネルギの吸収構
造の実施例の、車体の前後方向へ伸びる垂直面で切断し
た断面図である。FIG. 1 is a cross-sectional view of an embodiment of a structure for absorbing energy applied to a bumper according to the present invention, taken along a vertical plane extending in a front-rear direction of a vehicle body.
【図２】図１に示した実施例の斜視図で、バンパは省略
してある。2 is a perspective view of the embodiment shown in FIG. 1, in which bumpers are omitted.
【図３】本発明に係るバンパに加わるエネルギの吸収構
造の別の実施例の平面図である。FIG. 3 is a plan view of another embodiment of the structure for absorbing energy applied to the bumper according to the present invention.
【図４】図３に示した実施例のばねの取付け構造を示す
斜視図である。FIG. 4 is a perspective view showing a spring mounting structure of the embodiment shown in FIG.
１０、３０ 車体 １２、３２ バンパ １４ トーションバー １６ レバー １８ バンパアーム ２２ 受け面 ３４ 幅方向へ伸びる部分 ３５ 側部分 ３８ ばね Ｃ 軸線 Ｇ 重心 10, 30 Vehicle body 12, 32 Bumper 14 Torsion bar 16 Lever 18 Bumper arm 22 Receiving surface 34 Width extending portion 35 Side portion 38 Spring C Axis G G center of gravity
Claims (2)
ネルギを吸収する構造であって、前記車体の幅方向へ間
隔をおいた前記車体の２箇所に固着されるトーションバ
ーと、前記バンパが接触する受け面を有し、該受け面の
重心が前記トーションバーの軸線から上方または下方へ
間隔をおくように前記トーションバーに固着されるレバ
ーとを備え、該レバーの前記受け面を前記バンパの裏面
に対向させる、自動車のバンパに加わるエネルギの吸収
構造。1. A structure for absorbing energy applied to a bumper provided on a vehicle body of an automobile, wherein a torsion bar fixed to two portions of the vehicle body spaced apart in the width direction of the vehicle body comes into contact with the bumper. A lever fixed to the torsion bar so that the center of gravity of the receiving surface is spaced upward or downward from the axis of the torsion bar, the receiving surface of the lever being the back surface of the bumper. The structure that absorbs the energy applied to the bumper of the vehicle facing the vehicle.
ら車体の前後方向へ伸びる２つの側部分とを有し、平面
視の形状が略Ｕ字状を呈するバンパに加わるエネルギを
吸収する構造であって、前記バンパの前記各側部分と前
記車体との間に配置されるばねを備える、自動車のバン
パに加わるエネルギの吸収構造。2. A body which has a portion extending in the width direction of the vehicle body and two side portions extending from the portion in the front-rear direction of the vehicle body, and absorbs energy applied to a bumper having a substantially U-shaped plan view. A structure for absorbing energy applied to a bumper of an automobile, comprising a spring arranged between each side portion of the bumper and the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23592593A JPH0761297A (en) | 1993-08-30 | 1993-08-30 | Structure of absorbing energy applied to automobile bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23592593A JPH0761297A (en) | 1993-08-30 | 1993-08-30 | Structure of absorbing energy applied to automobile bumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0761297A true JPH0761297A (en) | 1995-03-07 |
Family
ID=16993275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23592593A Pending JPH0761297A (en) | 1993-08-30 | 1993-08-30 | Structure of absorbing energy applied to automobile bumper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0761297A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2758779A1 (en) * | 1997-01-27 | 1998-07-31 | Lin Pac Mouldings | ASSEMBLY FORMING BUMPER FOR VEHICLE |
| KR100440855B1 (en) * | 2001-06-20 | 2004-07-19 | 현대자동차주식회사 | A bumper of automobile |
| CN110281867A (en) * | 2019-07-26 | 2019-09-27 | 安徽安凯华夏汽车配件制造有限公司 | Crossbeam assembly in a kind of lorry headstock anticollision |
-
1993
- 1993-08-30 JP JP23592593A patent/JPH0761297A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2758779A1 (en) * | 1997-01-27 | 1998-07-31 | Lin Pac Mouldings | ASSEMBLY FORMING BUMPER FOR VEHICLE |
| KR100440855B1 (en) * | 2001-06-20 | 2004-07-19 | 현대자동차주식회사 | A bumper of automobile |
| CN110281867A (en) * | 2019-07-26 | 2019-09-27 | 安徽安凯华夏汽车配件制造有限公司 | Crossbeam assembly in a kind of lorry headstock anticollision |
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