JP5412980B2 - Method for manufacturing vehicle frame part and vehicle frame part manufactured thereby - Google Patents
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本発明は、車輌用骨格部品、特に閉断面構造を有する自動車用の車体フレームなどに用いられる車輌用骨格部品の製造方法およびそれにより製造された車輌用骨格部品に関する。 The present invention relates to a method for manufacturing a vehicle frame part, particularly a vehicle frame part used for an automobile body frame or the like having a closed cross-sectional structure, and a vehicle frame part manufactured thereby.
閉断面構造を有する車輌用骨格部品には、金属板を略ハット形状にプレス成形し、ハット形状部材同士を反対向きに突き合わせてフランジ部をスポット溶接などにより接合した閉断面構造や、素材として金属管を用いて回転引き曲げやハイドロフォーミングなどにより目標形状に成形した閉断面部品や、金属板をロール成形などにより略円形や多角形断面の筒状に成形し、板の端部同士を溶接などにより接合することで閉断面構造とした部品などが用いられている。 For vehicle frame parts with a closed cross-section structure, a closed cross-section structure in which a metal plate is press-molded into a substantially hat shape, the hat-shaped members are butted in opposite directions and the flange portion is joined by spot welding, etc. Closed cross-section parts formed into a target shape by rotating pulling bending or hydroforming using a pipe, or metal plates are formed into a cylindrical shape with a substantially circular or polygonal cross section by roll forming, etc., and the ends of the plates are welded together A part having a closed cross-section structure is used by joining together.
しかし、閉断面構造は、構造部材が長手方向に長尺になると、閉断面内部が空洞であるため、例え高強度の素材を用いたとしても部品の曲げ剛性やねじれ剛性は著しく低下するという問題がある。この対策として、剛性低下を補うための補強部品としてバルクヘッドと呼ばれる補強部品を閉断面構造内に設置するのが一般的であり(図1)、バルクヘッドは閉断面構造部材の長手方向に略垂直に隔壁を構成するように、閉断面内部に挿入されるのものである。 However, the closed cross-section structure has a problem that when the structural member is elongated in the longitudinal direction, the inside of the closed cross-section is hollow, so that even if a high-strength material is used, the bending rigidity and torsional rigidity of the parts are significantly reduced. There is. As a countermeasure, it is common to install a reinforcing component called a bulkhead in the closed cross-sectional structure as a reinforcing component to compensate for the decrease in rigidity (Fig. 1). It is inserted into the closed cross section so as to constitute a partition wall vertically.
本補強部品は、ハット部材同士を溶接する閉断面構造部材では、ハット部材同士を溶接する際に、その内部に設置して溶接すればよく、比較的簡便な剛性向上手法として広く用いられている。 This reinforcing component is a closed cross-section structural member that welds hat members together. When the hat members are welded together, they need only be installed inside and welded, and are widely used as a relatively simple rigidity improving method. .
また、一定断面形状の閉断面構造部材の場合、部材強度は長手方向に略一定となるため、車体の性能向上のために骨格部材の特定の部位を補強するためには、レインホースメントと呼ばれる補強部品を骨格部材の中に取付けるのが一般的である(図2)。 In the case of a closed cross-section structural member having a constant cross-sectional shape, the strength of the member is substantially constant in the longitudinal direction. Therefore, in order to reinforce a specific part of the skeleton member in order to improve the performance of the vehicle body, it is called rain reinforcement. It is common to mount the reinforcing component in the framework member (FIG. 2).
この場合は図2に示すように略コの字断面の閉断面部品などを用いることが多い。バルクヘッドと同じく本補強部品は、ハット部材同士を溶接する際にその内部に設置して溶接すればよく、適用が容易である。 In this case, a closed cross-section component having a substantially U-shaped cross section as shown in FIG. 2 is often used. Similar to the bulkhead, this reinforcing component may be installed and welded inside the hat members and can be easily applied.
金属板をロール成形などにより略円形や多角形断面の筒状に成形し、板の端部同士を溶接などにより接合することで閉断面構造とした部品では、加工後にその内部にバルクヘッドやレインホースメントを挿入し取付けることは困難である。 For parts that have a closed cross-section structure by forming a metal plate into a cylindrical shape with a substantially circular or polygonal cross section by roll forming and joining the ends of the plate by welding, etc. It is difficult to insert and install a hosement.
特許文献1には、略一定断面形状を有する管状部材に補強部品を挿入し、部材の強度を向上させる手法が開示されているが、その補強部品を所定の位置に設置する方法の詳細は記載されていない。 Patent Document 1 discloses a method of inserting a reinforcing component into a tubular member having a substantially constant cross-sectional shape to improve the strength of the member, but details of a method of installing the reinforcing component at a predetermined position are described. It has not been.
しかしながら、金属管を素材として用いハイドロフォームにより成形された構造部品や、金属板を素材として用いロール成形などにより筒状に成形された構造部品では、その内部にバルクヘッドやレインホースメントなどの補強部品を挿入し、所定の位置に取付けることができないという問題がある。 However, structural parts formed by hydroforming using metal pipes as raw materials, and structural parts formed into cylinders by roll forming using metal plates as raw materials are reinforced such as bulkheads and rain reinforcements. There is a problem that a part cannot be inserted and attached at a predetermined position.
また、仮に端部の開口部より補強部品を挿入しても、補強部品を所定の位置に精度良く簡便に設置することができないという問題がある。そのため、剛性・強度向上手法として構造部材内部に補強部品を設置することができず、長尺部品における補強部品の取付け方法の開発が望まれている。 Further, even if the reinforcing component is inserted from the opening at the end, there is a problem that the reinforcing component cannot be easily and accurately installed at a predetermined position. For this reason, it is not possible to install a reinforcing component inside the structural member as a method for improving rigidity and strength, and development of a method for attaching the reinforcing component to a long component is desired.
本発明は、車輌用フレームなどに用いられる骨格部品に好適な車輌用骨格部品の製造方法であって、金属板をプレス加工やロール成形などにより略円形または多角形断面の筒状に加工して、板端部同士を溶接やかしめなどにより接合する閉断面構造部品に対し、バルクヘッドやレインホースメントなどの補強部品を部品内部の所定の位置に精度よく設置する方法およびそれにより製造された骨格部品を提供することを目的とする。 The present invention relates to a method for manufacturing a vehicle frame component suitable for a frame component used in a vehicle frame or the like, and a metal plate is processed into a cylindrical shape having a substantially circular or polygonal cross section by pressing or roll forming. , A method for accurately installing reinforcing parts such as bulkheads and rain reinforcements at predetermined positions inside the parts for a closed cross-section structural part that joins the plate ends together by welding or caulking, etc., and a skeleton manufactured thereby The purpose is to provide parts.
上記課題を解決するために、本発明は、以下の特徴を有する。 In order to solve the above problems, the present invention has the following features.
第一の発明は、金属板を略円形または多角形断面の筒状に成形して、板端面または板端面に設けたフランジ部同士を接合した長手方向に略直線状の閉断面構造部材とし、該閉断面構造部材を長手方向の少なくとも一箇所以上の部位で断面形状が異なった形状に成形した後に、前記閉断面構造部材の開口端部より補強部品を挿入し、断面形状が異なった部位に補強部品を押し当てることにより、補強部品の取付け位置を決めて取付けることを特徴とする車輌用骨格部品の製造方法である。 The first invention is a closed cross-section structural member having a substantially linear shape in the longitudinal direction in which a metal plate is formed into a cylindrical shape having a substantially circular or polygonal cross section, and flange portions provided on the plate end surface or the plate end surface are joined together. After forming the closed cross-section structural member into a shape having a different cross-sectional shape in at least one location in the longitudinal direction, a reinforcing component is inserted from the open end of the closed cross-section structure member, and the cross-section shape is changed to a location different It is a method for manufacturing a vehicle frame part, wherein the reinforcing part is pressed to determine a mounting position of the reinforcing part.
第二の発明は、閉断面構造部材とした際にその長手方向の少なくとも一箇所以上の部位で断面形状が異なった形状となるように、予め金属板に加工を施し、該金属板を略円形または多角形断面の筒状に成形して、板端面または板端面に設けたフランジ部同士を接合し、長手方向に略直線状で、かつ長手方向の少なくとも一箇所以上の部位で断面形状が異なった形状を有する閉断面構造部材とし、前記閉断面構造部材の開口端部より補強部品を挿入し、断面形状が異なった部位に補強部品を押し当てることにより、補強部品の取付け位置を決めて取付けることを特徴とする車輌用骨格部品の製造方法である。 According to a second aspect of the present invention, when a closed cross-section structural member is used, the metal plate is processed in advance so that the cross-sectional shape is different in at least one portion in the longitudinal direction, and the metal plate is substantially circular. Alternatively, it is molded into a cylindrical shape with a polygonal cross-section, and the flanges provided on the plate end surfaces or the plate end surfaces are joined together. The cross-sectional shape differs at least at one or more locations in the longitudinal direction. The closed cross-section structural member is inserted into the closed cross-section structure member, and the reinforcement component is inserted into the opening end of the closed cross-section structure member, and the reinforcement component is pressed against a portion having a different cross-sectional shape, thereby determining the installation position of the reinforcement component. This is a method for manufacturing a vehicle frame part.
第三の発明は、金属板を略円形または多角形断面の筒状に成形するとともに、該金属板を閉断面構造部材とした際にその長手方向の少なくとも一箇所以上の部位で断面形状が異なった形状となるような加工を施し、その後、板端面または板端面に設けたフランジ部同士を接合し、長手方向に略直線状で、かつ長手方向の少なくとも一箇所以上の部位で断面形状が異なった形状を有する閉断面構造部材とし、前記閉断面構造部材の開口端部より補強部品を挿入し、断面形状が異なった部位に補強部品を押し当てることにより、補強部品の取付け位置を決めて取付けることを特徴とする車輌用骨格部品の製造方法である。 According to a third aspect of the invention, the metal plate is formed into a substantially circular or polygonal cross-section cylindrical shape, and when the metal plate is a closed cross-section structural member, the cross-sectional shape is different in at least one part in the longitudinal direction. After that, the plate end surfaces or flange portions provided on the plate end surfaces are joined to each other, are substantially linear in the longitudinal direction, and have different cross-sectional shapes in at least one part in the longitudinal direction. The closed cross-section structural member is inserted into the closed cross-section structure member, and the reinforcement component is inserted into the opening end of the closed cross-section structure member, and the reinforcement component is pressed against a portion having a different cross-sectional shape, thereby determining the installation position of the reinforcement component. This is a method for manufacturing a vehicle frame part.
第四の発明は、第一乃至第三の発明のいずれか1つの発明に記載の製造方法により製造された車輌用骨格部品である。 A fourth invention is a skeleton part for a vehicle manufactured by the manufacturing method according to any one of the first to third inventions.
第五の発明は、前記筒状の閉団面構造部材と補強部品が接合されていることを特徴とする第四の発明に記載の車両用骨格部品である。 A fifth aspect of the present invention is the vehicle framework part according to the fourth aspect of the present invention, wherein the tubular closed surface structure member and the reinforcing part are joined.
本発明によれば、従来バルクヘッドやレインホースメントなどの補強部品を挿入することができずに、部材の曲げ・ねじり剛性を向上させたり、部材の強度を局部的に向上させることが困難であった、金属板を筒状に成形し板端部同士を接合した車輌骨格用の閉断面構造部品に対し、開口端部から補強部品を挿入し、補強部品を所定の位置に簡便に設置することができるようになる。 According to the present invention, it is difficult to improve the bending / torsional rigidity of a member or locally improve the strength of a member without being able to insert reinforcing parts such as a conventional bulkhead and rain reinforcement. A reinforcing part is simply inserted into a predetermined position by inserting a reinforcing part into the closed cross-section structure part for a vehicle skeleton formed by forming a metal plate into a cylindrical shape and joining the end parts to each other. Will be able to.
また本発明によれば、骨格部品全体の剛性を向上させたり、強度が必要な部位を局部的に補強することができるようになるため、効率的な車体設計により、車体を軽量化することができ、自動車用骨格部品に適用した場合には燃費改善効果が期待できる。 Further, according to the present invention, it becomes possible to improve the rigidity of the entire skeletal component and locally reinforce the part that requires strength. It can be expected to improve fuel efficiency when applied to automobile frame parts.
一般に、ハット曲げ部材同士を突き合わせてフランジ部を溶接し閉断面構造を構成する骨格部品の場合、図1に示すように片側のハット部材2側にバルクヘッド1を挿入し、バルクヘッド1のフランジ部とハット部材2の壁部を溶接した後、もう一方のハット部材3で蓋をするように閉じて、ハット部材2、3のフランジ部を溶接することで組み立てることが可能である。図2に示すようなレインフォースメントを挿入する場合でも同じことが言える。
In general, in the case of a skeletal component that has a closed cross-section structure by butting the hat bending members together and welding the flange part, the bulkhead 1 is inserted into the
これに対し図3に示すような、金属板をロール成形やプレス成形などにより筒状に成形し、板端部を溶接などにより接合した閉断面構造部材4の場合には、組み立て後にバルクヘッドやレインフォースメントを挿入する場合には端部の開口部より挿入するしか方法がない。このような場合には、略一定断面形状を有する筒状の閉断面構造の場合、補強部品を所定の位置に簡便に設置することが困難であった。
On the other hand, as shown in FIG. 3, in the case of the closed cross-section
この問題を解決するためには、図4に示すように、長手方向に略一定断面形状を有した筒状の閉断面構造に対し、補強部品を設置したい部位の断面形状を変更するように成形する方法が有効である。図4の場合は閉断面構造の断面形状(周長)を長手方向の途中で変化させている。このような長手方向の途中で断面形状を変化させるような成形は、以下の3種類のどの段階で行ってもよい。 In order to solve this problem, as shown in FIG. 4, a cylindrical closed cross-sectional structure having a substantially constant cross-sectional shape in the longitudinal direction is formed by changing the cross-sectional shape of a part where a reinforcing component is to be installed. The method to do is effective. In the case of FIG. 4, the cross-sectional shape (peripheral length) of the closed cross-sectional structure is changed in the middle of the longitudinal direction. Molding that changes the cross-sectional shape in the middle of the longitudinal direction may be performed at any of the following three types.
(1)閉断面構造部材とした後(筒状に成形し、端部を接合した後)
(2)金属板を筒状に成形する前(予め金属板を所定の形状に加工した後に筒状に加工し端部接合)
(3)金属板を筒状に成形する途中あるいは、成形後で、かつ端部接合する前
このようにすることで図5に示すように、閉断面構造部材と略同一形状に加工した補強部品7、8を開口部より挿入した場合に、閉断面構造部材6の断面形状が変化した部分で補強部品7、8が突き当たり停止するので、所定位置に補強部品7、8を設置することが可能となり複雑な位置決め治具や機構を用いることなく、容易に補強部品7、8を所定位置に設置することができる。
(1) After forming a closed cross-section structural member (after forming into a cylindrical shape and joining the end portions)
(2) Before forming the metal plate into a cylindrical shape (after processing the metal plate into a predetermined shape in advance and processing it into a cylindrical shape, end joining)
(3) Reinforcing parts processed into a substantially same shape as a closed cross-section structural member as shown in FIG. 5 during or after molding and before end joining before forming the metal plate into a
特に図5に示す形状の補強部品7、8の場合には、補強部品7、8の挿入方向先端部が、挿入される側の閉断面構造部材6の断面寸法に対して小さくなっているので、補強部品7、8を開口部に挿入する際に、閉断面構造部材6と干渉することが少ないため作業も容易であり望ましい。
In particular, in the case of the reinforcing
また同じように、図6に示すような略一定形状を有する筒状の閉断面構造部材9の側壁に突起部16を付与し断面形状を局部的に変更する方法も有効である。突起部16は、筒状に成形する前の金属板に付与しておいてもよいし、筒状に成形し閉断面構造部材とした後に付与してもよい。この場合、端部より挿入された補強部品は突起部16に突き当たって停止するので、補強部品10を容易に所定位置に設置することが可能である。突起部16の加工方法は金型を用いた通常のプレス加工でも良いし、発明の効果はその加工方法によらない。突起部16の数も1つに限定するものではなく複数であっても良い。
Similarly, a method of locally changing the cross-sectional shape by providing the
また同じように、図7、8に示すような略一定形状を有する筒状の閉断面構造部材11の側壁に切込み17や端部スリット19を付与し断面形状を局部的に変更する方法も有効である。切込み17や端部スリット19は、筒状に成形する前の金属板に付与しておいてもよいし、筒状に成形し閉断面構造部材とした後に付与してもよい。
Similarly, a method of locally changing the cross-sectional shape by providing
この場合、切込み17や端部スリット19の位置に対応するように補強部品12に固定用爪18、20を製作しておき、端部より挿入された補強部品の固定用爪18または20を切込み17または端部スリット19に差し込むことにより、補強部品12、14を容易に所定位置に設置することが可能である。
In this case, the fixing
切込み17や端部スリット19の加工方法は打抜き加工でも良いし、発明の効果はその加工方法によらない。切込み17や端部スリット19の数も1つに限定するものではなく複数であっても良い。
The cutting method of the
補強部品は両端部が開口した筒状部品であれば図2のレインフォースメントとして用いることが可能であり、どちらかの端部が閉じたカップ形状部品(絞り加工などにより製作)であれば、閉断面構造部材内部に設置することで隔壁を構成することができるため図1で示したバルクヘッドとして用いることができる。 Reinforcing parts can be used as the reinforcement shown in FIG. 2 if they are cylindrical parts that are open at both ends. If they are cup-shaped parts that are closed at either end (manufactured by drawing, etc.) Since the partition wall can be configured by being installed inside the closed cross-section structural member, it can be used as the bulkhead shown in FIG.
ここでは、断面形状が6角形の閉断面構造部材を例に発明を説明したが、本発明の効果はその断面形状によらず断面の形状は略円形状でもよいし、他の多角形形状でもよい。 Here, the invention has been described by taking a closed cross-section structural member having a hexagonal cross-section as an example. However, the effect of the present invention is not limited to the cross-sectional shape, and the cross-sectional shape may be a substantially circular shape or other polygonal shapes. Good.
また、挿入された補強部品と筒状の閉断面部材本体とを接合することで、部材の剛性や強度はより向上することが期待される。どのような接合方法でも剛性向上、強度向上の効果は期待できるが、スポット溶接、レーザ溶接、アーク溶接などの方法を用いるのが生産性を考慮すると簡便で望ましい。閉断面構造のためスポット溶接用のガンは入らないので、スポット溶接の場合は片側スポット溶接方法を用いればよい。アーク溶接の場合は、補強部品が設置される部分の閉断面部材の側壁に溶接用の孔を開けておけば、内部の補強部品との溶接が可能である。 Further, it is expected that the rigidity and strength of the member are further improved by joining the inserted reinforcing component and the cylindrical closed cross-section member main body. Although any joining method can be expected to improve rigidity and strength, it is simple and desirable to use methods such as spot welding, laser welding, and arc welding in view of productivity. Since a spot welding gun does not enter due to the closed cross-sectional structure, a one-side spot welding method may be used in the case of spot welding. In the case of arc welding, if a hole for welding is made in the side wall of the closed cross-section member where the reinforcing component is installed, welding with the internal reinforcing component is possible.
図11に示すようなハット部材を重ね合わせた閉断面構造と、プレス成形による曲げ加工により6角形断面の閉断面構造を製作した。効果を比較するため、断面長はほぼ同じ長さに合わせた。閉断面構造部品の長手方向の長さはそれぞれ800mmとした。素材には、板厚1.4mm,引張強度590MPa級の冷延鋼板を用いた。ハット部材のフランジ部はスポット溶接により接合し、6角形断面の構造部材は板端部同士をレーザ溶接により接合した。 A closed cross-sectional structure in which hat members are overlapped as shown in FIG. 11 and a hexagonal cross-sectional closed cross-sectional structure were manufactured by bending by press molding. In order to compare the effects, the cross-sectional lengths were adjusted to substantially the same length. The length in the longitudinal direction of the closed cross-section structural component was 800 mm. A cold-rolled steel sheet having a thickness of 1.4 mm and a tensile strength of 590 MPa was used as the material. The flange part of the hat member was joined by spot welding, and the structural members having a hexagonal cross section were joined to each other by laser welding.
6角形断面構造部材は、本発明を適用するために、(1)長手方向中央部で長手方向25mmの範囲に渡って漸次断面寸法を変更した部材と、(2)長手方向で断面寸法が一定の部材との2種類とし、プレス加工により金属板を筒状に成形し、板端部同士をレーザ溶接して作製した。 In order to apply the present invention, a hexagonal cross-section structural member has (1) a member whose cross-sectional dimensions are gradually changed over a range of 25 mm in the longitudinal direction at the center in the longitudinal direction, and (2) a constant cross-sectional dimension in the longitudinal direction. The metal plate was formed into a cylindrical shape by press working, and the plate end portions were produced by laser welding.
(1)の部材は、レーザ溶接後に長手方向の約半分の領域において断面形状を図11に示す断面寸法に対して縦横方向ともに1%程度大きくなるように加工した。(2)の部材は、長手方向中央部の側壁4箇所に補強部品固定用の切込みを加工した。 The member (1) was processed so that the cross-sectional shape in the region about half in the longitudinal direction after laser welding was about 1% larger in both the vertical and horizontal directions than the cross-sectional dimension shown in FIG. In the member (2), cuts for fixing the reinforcing parts were processed at four locations on the side wall in the center in the longitudinal direction.
(1)の6角断面構造部材用の補強部品は、6角断面構造部材の断面寸法に合わせて製作しており、断面形状が変化する部分が25mm、その他の部分が25mmで、高さ方向約50mmの6角断面を有するカップ形状とした。また、
(2)の6角断面構造部材用の補強部品は、6角断面構造部材の断面寸法に合わせて製作し、高さ方向約50mmの6角断面を有するカップ形状とし、6角断面構造部材の切込み位置に合わせて、4箇所に固定用爪を付与した。従って、カップ形状の底が隔壁の役割を果たすため、6角断面構造部材内部に挿入することによりバルクヘッドとして機能することになる。
The reinforcing part for hexagonal cross-section structural member (1) is manufactured according to the cross-sectional dimensions of the hexagonal cross-section structural member, the section where the cross-sectional shape changes is 25 mm, the other sections are 25 mm, The cup shape had a hexagonal cross section of about 50 mm. Also,
The reinforcing component for the hexagonal cross-section structural member of (2) is manufactured according to the cross-sectional dimension of the hexagonal cross-section structural member, is formed into a cup shape having a hexagonal cross section of about 50 mm in height direction, According to the cutting position, fixing nails were provided at four locations. Therefore, since the cup-shaped bottom functions as a partition wall, the cup-shaped bottom functions as a bulkhead by being inserted into the hexagonal cross-section structural member.
(1)の部材の場合、補強部品は断面寸法が大きい側の開口端部より挿入し、断面寸法が変化する部位に突き当てて設置部位を決定して取付けた。(2)の部材の場合、開口端部より補強部品を挿入し、6角断面構造部材の切込みに補強部品の固定用爪を差込むことにより設置部位を決定して取付けた。挿入した補強部品と6角形閉断面構造部材は、レーザ溶接により全周溶接した。 In the case of the member of (1), the reinforcing component was inserted from the opening end portion on the side having a larger cross-sectional dimension, abutted against the site where the cross-sectional dimension changes, and the installation site was determined and attached. In the case of the member of (2), the reinforcement part was inserted from the opening end, and the installation part was determined and attached by inserting the claw for fixing the reinforcement part into the notch of the hexagonal cross-section structural member. The inserted reinforcing component and hexagonal closed cross-section structural member were welded all around by laser welding.
部品のねじり剛性については、図9に示すように部材の片側端部を完全に固定し、反対側の端部にねじりモーメントを加え、部品のねじれ角を測定しねじり剛性を測定した。また部品の曲げ剛性については、図10に示すように部材の片側端部を完全に固定し、反対側の端部に荷重を付与し(片持ち梁式)荷重負荷位置の変位量を測定し曲げ剛性を測定した。 With respect to the torsional rigidity of the part, as shown in FIG. 9, one end of the member was completely fixed, a torsional moment was applied to the opposite end, the torsion angle of the part was measured, and the torsional rigidity was measured. As for the bending rigidity of the parts, as shown in FIG. 10, one end of the member is completely fixed, a load is applied to the opposite end (cantilever type), and the amount of displacement at the load load position is measured. The bending stiffness was measured.
図12に曲げ剛性およびねじり剛性の測定結果を示す。それぞれ
○比較例1:ハット部材同士を重ね合わせ接合した閉断面構造部材
○比較例2:ハット部材同士を重ね合わせ接合した閉断面構造部材内部にバルクヘッドを設置
○比較例3:6角形断面の閉断面構造部材(補強部品なし)
○本発明例1:(1)の6角形断面の閉断面構造部材に本発明による補強部品(バルクヘッド)を挿入したもの
○本発明例2:(2)の6角形断面の閉断面構造部材に本発明による補強部品(バルクヘッド)を挿入したもの
を示している。比較例1の剛性値を100%として効果を比較した。
FIG. 12 shows the measurement results of bending rigidity and torsional rigidity. Comparative example 1: Close cross-section structural member in which hat members are overlapped and joined ○ Comparative example 2: Bulk head is installed inside closed cross-section structural member in which hat members are overlapped and joined ○ Comparative example 3: Hexagonal cross section Closed-section structural member (no reinforcing parts)
Inventive Example 1: Reinforcing parts (bulkhead) according to the present invention inserted into a hexagonal cross-section structural member of (1). Inventive Example 2: (2) hexagonal cross-section closed-section structural member. Fig. 5 shows a case where a reinforcing component (bulkhead) according to the present invention is inserted. The effect was compared with the rigidity value of Comparative Example 1 as 100%.
比較例2のように通常のハット部材同士を接合した閉断面構造部材内にバルクヘッドを挿入することでも曲げ剛性、ねじり剛性が向上するが、同じように6角形断面形状を有する閉断面構造部材に本発明を適用することで、曲げ剛性およびねじり剛性が向上することが確認された。閉断面構造部材であっても、端部からバルクヘッドを挿入し所定の位置に設置することで、ハット部材の場合と同じように部品機能を向上させることができることがわかった。 Bending rigidity and torsional rigidity can be improved by inserting a bulkhead into a closed cross-section structural member in which normal hat members are joined as in Comparative Example 2, but the closed cross-section structural member has a hexagonal cross-sectional shape in the same manner. It was confirmed that bending rigidity and torsional rigidity were improved by applying the present invention to the above. Even in the case of a closed cross-section structural member, it has been found that by inserting the bulkhead from the end and installing it at a predetermined position, the component function can be improved in the same manner as in the case of the hat member.
1 :バルクヘッド
2 :ハット部材(バルクヘッド挿入側)
3 :ハット部材(蓋側)
4 :レインフォースメント
5 :6角形断面形状を有する閉断面構造部材
6 :異なる6角形断面形状を有する閉断面構造部材
7 :補強部品1
8 :補強部品2
9 :側壁に突起形状を付与した6角形断面形状を有する閉断面構造部材
10:補強部品3
11:側壁に切込みを付与した6角形断面形状を有する閉断面構造部材
12:補強部品4
13:側壁に端部スリットを付与した6角形断面形状を有する閉断面構造部材
14:補強部品5
15:溶接位置
16:突起
17:切込み
18:補強部品4の固定用爪
19:端部スリット
20:補強部品5の固定用爪
1: Bulk head 2: Hat member (bulk head insertion side)
3: Hat member (lid side)
4: Reinforcement 5: Closed cross-section
8:
9: Closed cross-section
11: Closed cross-section structural member having a hexagonal cross-sectional shape with a cut in the side wall 12: Reinforcing
13: Closed cross-section structural member having a hexagonal cross-sectional shape with end slits provided on the side wall 14: Reinforcing component 5
15: Welding position 16: Protrusion 17: Cut 18: Claw for fixing the reinforcing
Claims (5)
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