JP2004291754A - Cab deformation preventive structure - Google Patents

Cab deformation preventive structure Download PDF

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Publication number
JP2004291754A
JP2004291754A JP2003085264A JP2003085264A JP2004291754A JP 2004291754 A JP2004291754 A JP 2004291754A JP 2003085264 A JP2003085264 A JP 2003085264A JP 2003085264 A JP2003085264 A JP 2003085264A JP 2004291754 A JP2004291754 A JP 2004291754A
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Japan
Prior art keywords
cab
frame
deformation
shape
cab frame
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JP2003085264A
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JP4204362B2 (en
Inventor
Akifumi Tanazawa
澤 明 文 棚
Toshimasa Yamamoto
本 敏 雅 山
Mitsuhiro Nunokawa
川 満 浩 布
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UD Trucks Corp
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UD Trucks Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cab body structure of a cab over vehicle preventing deformation so as to keep a life space of a passenger at the time of a collision. <P>SOLUTION: A frame deformation preventive reinforcing material 3 is provided at a part that becomes a starting point of buckling deformation of a cab frame 2. The part that becomes a starting point of buckling deformation is a part A inflecting in a plane surface shape of the cab frame 2, or a part B inflecting in a side surface shape of the cab frame 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、キャブオーバ型の商用車が衝突した場合に、運転室（以下、キャブという）内の乗員の安全を確保するためのキャブの変形防止構造に関する。特に、キャブの床部に前後方向に伸びるキャブフレームの構造によって乗員の生存空間を保ちやすくするキャブの変形防止構造に関する。
【０００２】
【従来の技術】
キャブオーバ型の商用車においては、キャブが最前部にある関係上、もし衝突が起きてキャブに変形が生じた場合に乗員の安全のために生存空間を確保する必要がある。
【０００３】
図１に、キャブオーバ型トラックのキャブ部分の一例を示す。シャシフレームＦの前端部にキャブ１が登載されており、キャブ１の床面下側には前後方向に延びる２本のキャブフレーム２が設けられている。そして、そのキャブフレーム２の前部には図示しないヒンジ部が設けられてシャシフレームＦに支持されており、シャシフレームＦとキャブフレーム２との間には油圧シリンダ・ピストンで構成されるチルト手段５が介装され、その作動によってヒンジ部を中心に回動しキャブ１がチルトアップするように構成されている。
【０００４】
このキャブフレーム２は、その側面形状が図１に示されているように後半部にて変曲し、キックアップされた形状となってキャブ床面を支えている。また、その平面形状は、図２に示されているように、２本のキャブフレーム２、２が、前部での互いに平行な狭い間隔から変曲されて、後部では広い間隔の平行となっている。
【０００５】
このように構成されたキャブ１においては、壁面Ｗに正面衝突した場合に、図１に鎖線で示されているようにキャブ１は、壁Ｗと前進した荷台端部Ｂ１とに挟まれて押し潰される。そして、キャブフレーム２は図中に破線Ｅで示すように座屈変形して運転者Ｄの生存空間は減少してしまう。
【０００６】
このような問題点に対処するための従来技術としては、キャブフレームに取り付けられた部材と、エンジンに取り付けられた部材とが係合し、エンジンの剛性でキャブフレームが支持されてキャブの変形をくい止める技術が提案されている（特許文献１参照）。
【０００７】
【特許文献１】
特開平６−１１５４６３号公報
【０００８】
【所見】
上記問題点に対処すべく、さらに本発明者が種々研究した結果、キャブフレーム２の断面形状が図３に示すような逆ハット形、すなわち、コ字形状の開口端を上方に向け、その開口端から水平方向外方にフランジ状に延伸した形状である場合に、正面衝突によるキャブ１の変形は、キャブフレーム２の変曲している箇所において逆ハット形断面の平行する垂直な両側面２ｓ、２ｓが図４に示すようにそれぞれ内方に折れ曲がって座屈し、それを起点としてキャブフレーム２の長手方向の折れ曲がりが生じることが判った。そして、その断面形状を、両側面２ｓ、２ｓが内方に曲がるのを防止するように補強することで、キャブフレーム２の座屈強度が増すことが判った。
【０００９】
そこで、この技術を応用し、キャブフレーム２の強度分布を適正化して乗員居住部以外が潰れスペースとなるように構成することで乗員の生存空間を保ちやすくする手段を考案し、提案するに至った。
【００１０】
【発明が解決しようとする課題】
本発明は、前記問題点に対処すべく上記所見に基づき提案されたものであり、衝突時に乗員の生存空間が保ちやすいように変形防止を図ったキャブオーバ車のキャブの変形防止構造を提供することを目的としている。
【００１１】
【課題を解決するための手段】
本発明のキャブ（１）の変形防止構造は、キャブフレーム（２）の座屈変形の起点となる箇所にフレーム変形防止用補強材（３）が設けられており、その座屈変形の起点となる箇所は、キャブフレーム（２）の平面形状において変曲している箇所（Ａ）であり、または、キャブフレーム（２）の側面形状において変曲している箇所（Ｂ）であることを特徴とする（請求項１）。
【００１２】
また、本発明では、前記フレーム変形防止用補強材が設けられている箇所は、キャブフレーム（２）とチルト手段（５）とが連結されている箇所（Ｃ）の近傍である（請求項２）。
【００１３】
このようにキャブフレームの座屈変形の起点箇所、あるいはチルト手段の連結箇所の近傍にフレーム変形防止用補強材を設けることにより、衝突時のキャブフレームの座屈変形強度が増加し、特に、運転席付近を端部に比べて強固にすることでキャブの変形が生じても乗員の生存空間が保ちやすく、安全性が増大する。そのフレーム変形防止用補強材のさらに具体的な形態としては、下記の構成とすることが望ましい。
【００１４】
前記キャブフレーム（２）はその断面形状が上方に開口した逆ハット形であり、前記フレーム変形防止用補強材（３Ａ）はそのフレーム両側面（２ｓ、２ｓ）間を連結してリブ状に形成されている（請求項３）。
または、前記フレーム変形防止用補強材（３Ｂ）はそのフレーム両側面（２ｓ、２ｓ）間を連結してパイプ状に形成されている（請求項４）。
または、前記フレーム変形防止用補強材（３Ｃ）はそのフレーム両側面（２ｓ、２ｓ）間を連結して板状に形成されている（請求項５）。
【００１５】
また、本発明では、前記キャブフレーム（２）はその断面形状が上方に開口した逆ハット形であり、前記フレーム変形防止用補強材（３Ｄ）はそのキャブフレーム（２）の逆ハット形断面の内方に嵌挿されてその水平方向に延材する部分（３ｃ）がフレームの（２）変形を阻止するように形成されている（請求項６）。
【００１６】
上記の構成によれば、逆ハット形断面のキャブフレームの両側面が連結されて内方への座屈が防止され、その変形座屈強度を増大させることができる。
したがって、請求項１に係る発明に適用して安全性の向上、あるいは請求項２に係る発明に適用してチルト手段の取り付けに関連する不具合に対処することができる。
【００１７】
【発明の実施の形態】
以下、添付図面を参照して本発明の実施形態について説明する。
第１の実施形態では、キャブフレーム２が、前記図１および図２で説明した側面形状および平面形状をなし、鋼板を成形して形成されたものである。そして、その基本断面形状は図３に示すように逆ハット形、すなわち、ほぼ垂直平行（抜き勾配がつく場合がある）の両側面２ｓ、２ｓと底面２ｂとで上方の開口したコ字形状をなし、その開口端部からはフランジ面２ｆ、２ｆが両水平方向に延伸する形状をなしている。
【００１８】
また、キャブフレーム２の座屈変形の起点となる位置である平面形状において変曲している箇所（図１の「Ａ」）であり、また、側面形状においても変曲している箇所（図２の「Ｂ」）に補強材３Ａ（以下、補強材を代表する場合は符号３で表す）が設けられている。
そして、その補強材３Ａは、図５および図６に示すように、キャブフレーム両側面２ｓ、２ｓ間に嵌挿され、図示のようにハット形状断面のリブ状に形成されてその両端部が２ｓ、２ｓ面に固着されている。
【００１９】
次に、図７および図８に示す補強材の第２の実施形態では、前記第１の実施形態と同様な位置に設けられており、キャブフレーム両側面２ｓ、２ｓ間にパイプ状の補強材３Ｂを挿入してその両端部が固着されている。なお、パイプ状の補強材３Ｂは、その断面が円形状、あるいは角形状などの何れであっても良い。
【００２０】
さらに、図９および図１０に示す補強材の第３の実施形態では、前記実施形態と同様の位置に設けられて、キャブフレーム両側面２ｓ、２ｓ間を板状の補強材３Ｃで連結している。
なお、図示のような平板に限らず、Ｉ形鋼やＬ形鋼など形成されるものであってもよい。
【００２１】
そして、第４の実施形態は、図１１および図１２に示すようにキャブフレーム２の両側面２ｓ、２ｓ間に嵌挿される鋼板成形品による補強材３Ｄである。その形状は、図１２に断面を示すように、一側はフレームフランジ部２ｆからフレーム側面２ｓ内側に沿って下がって重ね合わされており（３ａ〜３ｂ）、フレーム両側面間を水平方向に延びて（３ｃ）、さらに対向側のフレーム側面２ｓ内側に沿って上り（３ｄ）固着されてフレーム２の変形を阻止するように形成されている。
【００２２】
このように開断面であるキャブフレーム２と補強材３Ｄとの組み合わせで閉断面が形成され、捩り強度を増加させることができる。したがって、前記実施形態と同様な作用効果に加え、床面（図示なし）との結合（例えばスポット溶接）が捩り曲げ荷重によって分離するような不具合を解消することができる。
【００２３】
なお、上記各実施形態においては、キャブフレーム２の座屈変形の起点Ａ、Ｂはチルト手段５の連結部近傍であるが、チルト手段の連結部Ｃが座屈起点と離れているような構成の場合に、そのチルト手段５の連結部Ｃの近傍にこれら補強材３の何れかを設けることで、チルト手段５の取り付けや、あるいはチルト操作などに伴う負荷による局部的な応力集中などに対処することができる。
【００２４】
【発明の効果】
本発明によれば、以下の作用効果を奏する。
（１） キャブフレームに本発明による補強部材を設けると、製作が容易な開断面であっても両側面間が連結されて内方への座屈が防止され、閉断面形状とすることなく強度が確保できる。
（２） 特に、運転席の部分のキャブフレームの強度を増加し、乗員居住部以外を変形するようにすれば、衝突時の乗員の生存空間を保ちやすくなる。
（３） また、キャブフレームと床面との結合部の損傷を防止できる。
【図面の簡単な説明】
【図１】キャブおよびキャブフレームを示す側面図。
【図２】図１のキャブフレームの平面形状を示す図。
【図３】図１のキャブフレームの断面形状を示す図。
【図４】図３に示したキャブフレーム断面の座屈状態を示す図。
【図５】本発明によるキャブフレーム補強材の第１実施形態の断面形状を示す図。
【図６】図５のａ−ａ断面図。
【図７】本発明によるキャブフレーム補強材の第２実施形態の断面形状を示す図。
【図８】図７のｂ−ｂ断面図。
【図９】本発明によるキャブフレーム補強材の第３実施形態の断面形状を示す図。
【図１０】図９のｃ−ｃ断面図。
【図１１】本発明によるキャブフレーム補強材の第４実施形態を示す斜視図。
【図１２】図１１のフレーム直角方向の断面図。
【符号の説明】
１・・・キャブ
２・・・キャブフレーム
３、３Ａ〜３Ｄ・・・補強材
５・・・チルト手段[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cab deformation prevention structure for ensuring the safety of occupants in a cab (hereinafter referred to as a cab) when a cab-over type commercial vehicle collides. In particular, the present invention relates to a cab deformation preventing structure that facilitates maintaining a living space for an occupant by a structure of a cab frame extending in a front-rear direction on a floor portion of the cab.
[0002]
[Prior art]
In a cab-over type commercial vehicle, since the cab is located at the forefront, it is necessary to secure a living space for the safety of occupants if a collision occurs and the cab is deformed.
[0003]
FIG. 1 shows an example of a cab portion of a cab-over type truck. The cab 1 is mounted on the front end of the chassis frame F, and two cab frames 2 extending in the front-rear direction are provided below the cab 1 on the floor. A hinge (not shown) is provided at the front of the cab frame 2 and is supported by the chassis frame F. Between the chassis frame F and the cab frame 2, there is provided a tilt means constituted by a hydraulic cylinder and a piston. The cab 1 is arranged so that the cab 1 is tilted up by rotating about the hinge part by the operation.
[0004]
As shown in FIG. 1, the cab frame 2 is bent in the rear part as shown in FIG. 1 and has a kicked-up shape to support the cab floor surface. Further, as shown in FIG. 2, the two cab frames 2, 2 are bent from a narrow space parallel to each other at a front portion and become parallel at a wide space at a rear portion, as shown in FIG. ing.
[0005]
In the cab 1 configured as described above, when a frontal collision with the wall surface W occurs, the cab 1 is sandwiched between the wall W and the advancing platform end B1 as shown by a chain line in FIG. Crushed. Then, the cab frame 2 buckles and deforms as shown by a broken line E in the figure, and the living space of the driver D decreases.
[0006]
As a conventional technique for addressing such a problem, a member attached to the cab frame and a member attached to the engine are engaged with each other, and the cab frame is supported by the rigidity of the engine so that deformation of the cab is prevented. A blocking technique has been proposed (see Patent Document 1).
[0007]
[Patent Document 1]
JP-A-6-115463
[Remarks]
As a result of various studies conducted by the present inventors to address the above problems, the cab frame 2 has an inverted hat-shaped cross section as shown in FIG. In the case where the cab 1 is horizontally extended outward from the end in a flange shape, deformation of the cab 1 due to a head-on collision is caused by parallel vertical side surfaces 2 s having an inverted hat-shaped cross section at the inflection point of the cab frame 2. As shown in FIG. 4, the cab frame 2s was bent inward and buckled, and the cab frame 2 was bent in the longitudinal direction. Then, it was found that the buckling strength of the cab frame 2 was increased by reinforcing the cross-sectional shape so as to prevent the side surfaces 2s, 2s from bending inward.
[0009]
Therefore, by applying this technology, by optimizing the strength distribution of the cab frame 2 and structuring the space other than the occupant occupant to be a crushed space, a means for easily maintaining the occupant's living space has been devised and proposed. Was.
[0010]
[Problems to be solved by the invention]
The present invention has been proposed based on the above findings in order to address the above problems, and to provide a cab deformation prevention structure for a cab-over vehicle that prevents deformation so that the occupant's living space can be easily maintained during a collision. It is an object.
[0011]
[Means for Solving the Problems]
In the cab (1) deformation preventing structure of the present invention, a frame deformation preventing reinforcing material (3) is provided at a position that becomes a starting point of buckling deformation of the cab frame (2). Is a point (A) where the plane shape of the cab frame (2) is inflected, or a point (B) where the side surface of the cab frame (2) is bent. (Claim 1).
[0012]
In the present invention, the location where the frame deformation preventing reinforcing material is provided is near the location (C) where the cab frame (2) and the tilting means (5) are connected (Claim 2). ).
[0013]
By providing the frame deformation preventing reinforcing material near the starting point of the buckling deformation of the cab frame or near the connecting point of the tilting means, the buckling deformation strength of the cab frame at the time of collision is increased, and particularly, the operation is improved. By making the vicinity of the seat stronger than the end, even if the cab is deformed, the occupant's living space can be easily maintained, and safety is increased. As a more specific form of the reinforcing material for preventing frame deformation, the following configuration is desirable.
[0014]
The cab frame (2) has an inverted hat shape with a cross-sectional shape opening upward, and the frame deformation preventing reinforcing material (3A) is formed in a rib shape by connecting between both side surfaces (2s, 2s) of the frame. (Claim 3).
Alternatively, the frame deformation preventing reinforcing material (3B) is formed in a pipe shape by connecting between both side surfaces (2s, 2s) of the frame (claim 4).
Alternatively, the frame deformation preventing reinforcing material (3C) is formed in a plate shape by connecting between both side surfaces (2s, 2s) of the frame (claim 5).
[0015]
Further, in the present invention, the cab frame (2) has an inverted hat shape whose cross-sectional shape is open upward, and the frame deformation preventing reinforcing material (3D) has an inverted hat-shaped cross section of the cab frame (2). A portion (3c) which is inserted inward and extends in the horizontal direction is formed so as to prevent (2) deformation of the frame (claim 6).
[0016]
According to the above-described configuration, both side surfaces of the cab frame having the inverted hat-shaped cross section are connected to prevent buckling inward, and the deformation buckling strength can be increased.
Therefore, it is possible to improve the safety by applying the invention according to the first aspect, or to cope with a problem associated with the mounting of the tilting means by applying the invention to the second aspect.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
In the first embodiment, the cab frame 2 has the side surface shape and the planar shape described with reference to FIGS. 1 and 2, and is formed by molding a steel plate. The basic cross-sectional shape is an inverted hat shape as shown in FIG. 3, that is, a U-shape having an upper opening at both sides 2s, 2s and a bottom surface 2b that are substantially vertically parallel (a draft may be formed). No, the flange surfaces 2f, 2f have a shape extending in both horizontal directions from the opening end.
[0018]
In addition, the cab frame 2 is an inflection point in the plane shape (the position where the buckling deformation starts) (“A” in FIG. 1), and the inflection point is also in the side surface shape (FIG. 1). No. 2 “B”) is provided with a reinforcing material 3 </ b> A (hereinafter, denoted by reference numeral 3 when representing a reinforcing material).
As shown in FIGS. 5 and 6, the reinforcing member 3A is inserted between the two side surfaces 2s and 2s of the cab frame, and is formed in a hat-shaped cross-section rib as shown in the drawing, and both ends thereof are 2 seconds. , 2s.
[0019]
Next, in a second embodiment of the reinforcing member shown in FIGS. 7 and 8, the reinforcing member is provided at the same position as the first embodiment, and a pipe-like reinforcing member is provided between both side surfaces 2 s and 2 s of the cab frame. 3B is inserted and both ends thereof are fixed. The pipe-shaped reinforcing material 3B may have a circular or square cross section.
[0020]
Further, in the third embodiment of the reinforcing member shown in FIGS. 9 and 10, the reinforcing member is provided at the same position as that of the above-described embodiment, and is connected between the two side surfaces 2s and 2s of the cab frame by a plate-like reinforcing member 3C. I have.
It should be noted that the present invention is not limited to the flat plate as illustrated, but may be formed by an I-beam, an L-beam, or the like.
[0021]
In the fourth embodiment, as shown in FIGS. 11 and 12, a reinforcing member 3D made of a steel plate molded product is inserted between both side surfaces 2s, 2s of the cab frame 2. As shown in the cross section in FIG. 12, one side of the shape is overlapped with the frame flange portion 2f extending downward along the inside of the frame side surface 2s (3a to 3b), and extends horizontally between both side surfaces of the frame. (3c), and further fixed (3d) along the inside of the side surface 2s of the opposite frame to prevent deformation of the frame 2.
[0022]
As described above, a closed section is formed by the combination of the cab frame 2 and the reinforcing member 3D which are open sections, and the torsional strength can be increased. Therefore, in addition to the same operation and effect as the above-described embodiment, it is possible to solve a problem that the connection (for example, spot welding) with the floor surface (not shown) is separated by the torsional bending load.
[0023]
In the above embodiments, the starting points A and B of the buckling deformation of the cab frame 2 are near the connecting portion of the tilt means 5, but the connecting portion C of the tilt means is separated from the buckling starting point. In the case of (1), by providing any one of these reinforcing members 3 in the vicinity of the connecting portion C of the tilting means 5, it is possible to cope with the local stress concentration due to the mounting of the tilting means 5 or the load accompanying the tilting operation. can do.
[0024]
【The invention's effect】
According to the present invention, the following operation and effect can be obtained.
(1) When the reinforcing member according to the present invention is provided on the cab frame, even if it is an open section which is easy to manufacture, the side faces are connected to each other to prevent buckling inward, and the strength is obtained without forming a closed cross section. Can be secured.
(2) In particular, if the strength of the cab frame in the driver's seat portion is increased to deform the portion other than the occupant accommodation portion, the occupant's survival space at the time of a collision can be easily maintained.
(3) Further, it is possible to prevent damage to the joint between the cab frame and the floor.
[Brief description of the drawings]
FIG. 1 is a side view showing a cab and a cab frame.
FIG. 2 is a view showing a planar shape of the cab frame of FIG. 1;
FIG. 3 is a view showing a cross-sectional shape of the cab frame of FIG. 1;
FIG. 4 is a view showing a buckling state of a cross section of the cab frame shown in FIG. 3;
FIG. 5 is a diagram showing a cross-sectional shape of the first embodiment of the cab frame reinforcing member according to the present invention.
FIG. 6 is a sectional view taken along line aa of FIG. 5;
FIG. 7 is a view showing a cross-sectional shape of a cab frame reinforcing material according to a second embodiment of the present invention.
FIG. 8 is a sectional view taken along line bb of FIG. 7;
FIG. 9 is a view showing a cross-sectional shape of a cab frame reinforcing member according to a third embodiment of the present invention.
FIG. 10 is a sectional view taken along the line c-c in FIG. 9;
FIG. 11 is a perspective view showing a fourth embodiment of a cab frame reinforcement according to the present invention.
FIG. 12 is a sectional view in a direction perpendicular to the frame of FIG. 11;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Cab 2 ... Cab frame 3, 3A-3D ... Reinforcement 5 ... Tilt means

Claims (6)

キャブフレームの座屈変形の起点となる箇所にフレーム変形防止用補強材が設けられており、その座屈変形の起点となる箇所は、キャブフレームの平面形状において変曲している箇所であり、または、キャブフレームの側面形状において変曲している箇所であることを特徴とするキャブの変形防止構造。A frame deformation preventing reinforcing material is provided at a position that becomes a starting point of buckling deformation of the cab frame. Alternatively, a cab deformation preventing structure characterized in that the cab frame is an inflection point in a side surface shape. 前記フレーム変形防止用補強材が設けられている箇所は、キャブフレームとチルト手段とが連結されている箇所の近傍である請求項１のキャブの変形防止構造。The cab deformation prevention structure according to claim 1, wherein the portion where the frame deformation preventing reinforcing material is provided is near a position where the cab frame and the tilting means are connected. 前記キャブフレームはその断面形状が上方に開口した逆ハット形であり前記フレーム変形防止用補強材はそのフレーム両側面間を連結してリブ状に形成されている請求項１、２の何れかのキャブの変形防止構造。3. The cab frame according to claim 1, wherein the cab frame has an inverted hat shape with a cross-sectional shape opened upward, and the frame deformation preventing reinforcing member is formed in a rib shape by connecting both side surfaces of the frame. Cab deformation prevention structure. 前記キャブフレームはその断面形状が上方に開口した逆ハット形であり前記フレーム変形防止用補強材はそのフレーム両側面間を連結してパイプ状に形成されている請求項１、２の何れかのキャブの変形防止構造。3. The cab frame according to claim 1, wherein the cab frame has an inverted hat shape with a cross-sectional shape opened upward, and the frame deformation preventing reinforcing material is formed in a pipe shape by connecting both side surfaces of the frame. Cab deformation prevention structure. 前記キャブフレームはその断面形状が上方に開口した逆ハット形であり前記フレーム変形防止用補強材はそのフレーム両側面間を連結して板状に形成されている請求項１、２の何れかのキャブの変形防止構造。3. The cab frame according to claim 1, wherein the cab frame has an inverted hat shape with a cross-sectional shape opened upward, and the frame deformation preventing reinforcing member is formed in a plate shape by connecting both side surfaces of the frame. Cab deformation prevention structure. 前記キャブフレームはその断面形状が上方に開口した逆ハット形であり、前記フレーム変形防止用補強材はそのキャブフレームの逆ハット形断面の内方に嵌挿されてその水平方向に延材する部分がフレームの変形を阻止するように形成されている請求項１、２の何れかのキャブの変形防止構造。The cab frame has an inverted hat shape whose cross section is open upward, and the frame deformation preventing reinforcing member is inserted into the inside of the inverted hat shaped cross section of the cab frame and extends horizontally. 3. The cab deformation preventing structure according to claim 1, wherein the cab is formed so as to prevent deformation of the frame.
JP2003085264A 2003-03-26 2003-03-26 Cab deformation prevention structure Expired - Fee Related JP4204362B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011207264A (en) * 2010-03-29 2011-10-20 Jfe Steel Corp Reinforcing structure of collision energy absorbing member of automobile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011207264A (en) * 2010-03-29 2011-10-20 Jfe Steel Corp Reinforcing structure of collision energy absorbing member of automobile

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