JPS6212443A - Bumper structure of automobile - Google Patents

Abstract

PURPOSE:To prevent a bumper main body from being displaced upward, by forming an incline, displacing an energy absorbing material downward due to load at a collision, in the front of a bumper beam, and installing a boss, preventing displacement of the energy absorbing material, in an inner surface an outer layer covering these elements. CONSTITUTION:A bumper 10 is constituted of the following mechanism that an impact energy absorbing material 15 of urethane of the like is made contact with a front panel 13 of a bumper beam consisting of a closed section form and these parts are covered with an outer layer 16 having elasticity, while this outer layer 16 is tightly attached to the beam 12. In this case, the front panel 13 of the beam 12 is formed as being tilted to an acting direction of load F, and according to this formation, the impact energy absorbing material 15 also is formed as tilted to some extent. And, plural bosses 20 are projectingly installed in an inner surface of the outer layer 16 in an almost horizontal direction, engaging it with the impact energy absorbing material 15. With this constitution, deformation at a collision is regulated to be downward, making upward deformation preventable from occurring. therefore, a body panel and lamps 22 situated in an upper part avoidable from being damaged.

Description

【発明の詳細な説明】 （産業上の利用分野） この発明は、衝突時の変形を規正する自動車のパン・ぐ
構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to a panning structure for an automobile that regulates deformation during a collision.

（従来技術） 衝突時に作用する荷重を、ウレタン等の衝突エネルギ吸
収材で吸収させる自動車用バンパについては、種々の構
成のものが案出されている（たとえば実開昭５８−１３
５３４９号公報参照）。(Prior Art) Various configurations have been devised for automobile bumpers in which the load acting during a collision is absorbed by collision energy absorbing materials such as urethane (for example,
(See Publication No. 5349).

しかし従来のこのようなバンパには、次のような問題点
がある。すなわち第４図に示す従来例のバンパテハ、パ
ン／Ｊビーム１にウレタン等ノ衝突エネルギ吸収材２を
当接させ、これらを弾性を有する表皮３で覆って取付ネ
ジ４で一体的に結合形成しているが、これに衝突時の荷
重Ｅが作用するとき、エネルギ吸収材２とともに、表皮
３が鎖線で示すように上下方へ突出変形する。そして上
方へ突出したものが、上部に位置する車体・ぞネルまた
はランプ類５に接触してこれを傷つけ、外観を損うよう
になる。However, such conventional bumpers have the following problems. That is, a collision energy absorbing material 2 such as urethane is brought into contact with the bumper and pan/J beam 1 of the conventional example shown in FIG. However, when a load E at the time of a collision is applied to this, the skin 3 along with the energy absorbing material 2 is deformed to protrude upward and downward as shown by the chain line. The upwardly protruding objects then come into contact with the vehicle body/channels or lamps 5 located at the top, damaging them and deteriorating their appearance.

（発明の目的） この発明は、前記の問題点に対し、これを解消する自動
車のバンパ構造を提供するようにしたものである。(Object of the Invention) The present invention provides an automobile bumper structure that solves the above-mentioned problems.

（発明の構成） この発明は、パン／４’ビームの正面に衝突エネルギ吸
収材を当接させ、これらを表皮で覆ってなるものにおい
て、該ビームの正面に、衝突時の荷重により該エネルギ
吸収材を下方へ変位させる傾斜面を形成するとともに、
該表皮の内面に、該エネルギ吸収材に対する上下方向へ
の変位を防止するボスを設けてなる自動車のパンｉ９構
造である。(Structure of the Invention) This invention provides a structure in which a collision energy absorbing material is brought into contact with the front surface of a pan/4' beam and is covered with a skin. While forming an inclined surface that displaces the material downward,
This is an automobile pan i9 structure in which a boss is provided on the inner surface of the skin to prevent displacement of the energy absorbing material in the vertical direction.

（実施例） この発明の詳細を、第１図〜第３図に示す実施例につい
て説明すると、次の通りである。(Example) The details of the present invention will be explained with reference to the embodiment shown in FIGS. 1 to 3 as follows.

車体の前部または後部に取付げられるパンハ１０は、閉
断面形状からなるパンツやビーム１２の正面パネル１３
に、ウレタン等の衝突エネルギ吸収材１５を当接させ、
これらを弾性を有する表皮１６で覆うとともに、表皮１
６をビーム１２に固着して一体的に形成する。The panzer 10 attached to the front or rear of the vehicle body is a front panel 13 of the pant or beam 12 that has a closed cross-sectional shape.
A collision energy absorbing material 15 such as urethane is brought into contact with the
These are covered with an elastic epidermis 16, and the epidermis 1
6 is fixed to the beam 12 and formed integrally.

この構造において、衝突時に表皮１６の正面に荷重Ｆが
作用し、表皮１６および衝突エネルギ吸収材１５を変形
させるが、この発明はパンツ４ビーム１２の正面パネル
１３を、第２図に示すように、荷重Ｆの作用方向に対し
て傾斜させて形成する。そして衝突エネルギ吸収材１５
も正面パネル１３に当接するように傾斜させて形成する
。In this structure, a load F acts on the front of the skin 16 during a collision, deforming the skin 16 and the collision energy absorbing material 15. However, in this invention, the front panel 13 of the pants 4 beam 12 is , are formed to be inclined with respect to the direction of action of the load F. And collision energy absorbing material 15
It is also formed to be inclined so as to come into contact with the front panel 13.

また正面パネル１３に当接する衝突エネルギ吸収材１５
の下部を、第３図に示すように、たとえば波形１８（高
さＨ）に形成して、変形しやすい形状にする。Also, the collision energy absorbing material 15 that comes into contact with the front panel 13
As shown in FIG. 3, the lower part is formed into a waveform 18 (height H), for example, to make it easily deformable.

さらに表皮１６の内面に、第２図に示すように、はぼ水
平方向に数個のデス加を突設し、衝突エネルギ吸収材１
５と係合させる。Furthermore, as shown in FIG.
5.

従って衝突時に表皮１６に荷重Ｆが作用するとき、その
内方に位置する衝突エネルギ吸収材１５は、傾斜したパ
ンツ４ビーム１２の正面・ぐネル１３に圧接するととも
に、この傾斜した・ぐネル面に沿って斜め下方（Ｄ方向
）へ移動する。そして吸収材１５の下部に、変形しやす
い波形１８が形成しであるから、吸収材１５の下方への
移動が容易になる。Therefore, when a load F is applied to the skin 16 during a collision, the collision energy absorbing material 15 located inwardly comes into pressure contact with the front face/gunnel 13 of the slanted pants 4 beam 12, and at the same time, the slanted gunnel surface Move diagonally downward (direction D) along . Since the easily deformable corrugations 18 are formed in the lower part of the absorbent material 15, the absorbent material 15 can be easily moved downward.

また表皮１６の内面に設けたボス頷を、吸収材１５と係
合させるから、表皮１６は吸収材１５とともに移動し、
表皮１６のみが上下方向へ変位することがない。すなわ
ち吸収材１５は、衝突の荷重Ｆが作用するとき、斜め下
方へ移動するから、表皮１６も第２図に鎖線で示すよう
に、斜め下方へ変位し、従来例のように上方へ突出変形
することがない。In addition, since the boss nodule provided on the inner surface of the skin 16 is engaged with the absorbent material 15, the skin 16 moves together with the absorbent material 15,
Only the epidermis 16 will not be displaced in the vertical direction. In other words, since the absorbent material 15 moves diagonally downward when the collision load F acts on it, the skin 16 also displaces diagonally downward as shown by the chain line in FIG. There's nothing to do.

（発明の効果） この発明は、前述のように、バンパビーム１２の正面パ
ネル１３を傾斜形成して、これに衝突エネルギ吸収材１
５を当接させてあり、また表皮１６にデス加を突設して
吸収材１５と係合させであるから、衝突時における変形
は下向きに規制され、上方への変形は防止される。従っ
てバンパの上方に位置する車体パネルまたはラング類ｎ
と接触することがな（、その外観を損うようなことがな
い。(Effects of the Invention) As described above, the present invention includes forming the front panel 13 of the bumper beam 12 at an angle, and attaching the collision energy absorbing material to the front panel 13 of the bumper beam 12.
5 are brought into contact with each other, and a detent is provided protruding from the outer skin 16 to engage with the absorbent material 15, so deformation in the event of a collision is restricted downward and deformation upward is prevented. Therefore, body panels or rungs located above the bumper
It will not come into contact with the product (and will not damage its appearance).

また衝突の荷重Ｆが掛かるとき、その分力が傾斜した正
面パネル１３に沿って作用する。従って第２図に示すよ
うに、バンパビーム１２の下底部２４を、車体へパンハ
１０を取付けるステー５より下方に設定すれば、前記の
分力によりバンパ１０に下向きの回動モーメントＭが働
らき、表皮１６の上方への変形が確実に防止される。Further, when a collision load F is applied, the force acts along the inclined front panel 13. Therefore, as shown in FIG. 2, if the lower bottom part 24 of the bumper beam 12 is set below the stay 5 that attaches the bumper 10 to the vehicle body, a downward rotational moment M will act on the bumper 10 due to the above component force. Upward deformation of the epidermis 16 is reliably prevented.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は車体に取付けたバンパの外観斜視図、第２図は
この発明の実施例を示す第１図Ａ−Ａ線の拡大断面図、
第３図は第２図Ｂ−Ｂ線の断面図、第４図は従来例のパ
ン・ぐ断面図である。 １０１０１１１．バンパ、　　　　　１２１０００．、
パンツそビ、ム、１３・・・・・・正面ツクネル、 １５・・・・・・衝突エネルギ吸収材、１６・・・・・
・表皮、　　　　　１８・・・・・・波形、加・・・・
・・ボス。Fig. 1 is an external perspective view of a bumper attached to a vehicle body, Fig. 2 is an enlarged sectional view taken along line A-A in Fig. 1, showing an embodiment of the present invention;
FIG. 3 is a sectional view taken along line B--B in FIG. 2, and FIG. 4 is a pan-sectional view of the conventional example. 1010111. Bumper, 121000. ,
Pants sleeve, 13...Front tsukuneru, 15...Collision energy absorbing material, 16...
- Epidermis, 18...Waveform, addition...
··boss.

Claims (1)

【特許請求の範囲】[Claims] バンパビームの正面に衝突エネルギ吸収材を当接させ、
これらを表皮で覆つてなるものにおいて、該ビームの正
面に、衝突時の荷重により該エネルギ吸収材を下方へ変
位させる傾斜面を形成するとともに、該表皮の内面に、
該エネルギ吸収材に対する上下方向への変位を防止する
ボスを設けたことを特徴とする自動車のバンパ構造。Collision energy absorbing material is placed in contact with the front of the bumper beam,
In a structure in which these are covered with a skin, an inclined surface is formed on the front of the beam to displace the energy absorbing material downward due to the load at the time of a collision, and on the inner surface of the skin,
A bumper structure for an automobile, characterized in that a boss is provided to prevent vertical displacement of the energy absorbing material.