JP4908862B2 - Automotive panel materials - Google Patents

Automotive panel materials Download PDF

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JP4908862B2
JP4908862B2 JP2006025686A JP2006025686A JP4908862B2 JP 4908862 B2 JP4908862 B2 JP 4908862B2 JP 2006025686 A JP2006025686 A JP 2006025686A JP 2006025686 A JP2006025686 A JP 2006025686A JP 4908862 B2 JP4908862 B2 JP 4908862B2
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edge
panel
panel material
plate
end surface
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JP2007203901A (en
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宣 田尾
啓之 奥中
寛達 神田
真司 吾郷
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Honda Motor Co Ltd
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Priority to US11/668,845 priority patent/US7846555B2/en
Priority to DE102007005354A priority patent/DE102007005354A1/en
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Description

本発明は、自動車用パネル材に関し、特に自動二輪車や自動四輪車に好適に用いられる自動車用パネル材に関する。   The present invention relates to an automotive panel material, and more particularly to an automotive panel material suitably used for motorcycles and automobiles.

従来、自動車のボンネット、トランク及びドア等の自動車用パネル材の縁部には、アウタパネルとインナパネルとを重ね、アウタパネルの縁部に起立するように成形したフランジをインナパネルを挟み込むように折り曲げるヘミング構造が用いられている。   Conventionally, an outer panel and an inner panel are stacked on an edge of an automobile panel material such as an automobile bonnet, trunk, and door, and a flange formed so as to stand on the edge of the outer panel is bent so as to sandwich the inner panel. Structure is used.

例えば、特許文献１には、インナパネルの縁部に対しアウタパネルの縁部を折り曲げることにより挟み込んで締結した自動車用ドアのパネル材が記載されている。   For example, Patent Document 1 describes a panel material for an automobile door that is sandwiched and fastened by bending the edge of an outer panel with respect to the edge of an inner panel.

図１４は、上記従来の構成による自動車用パネル材の縁部を板厚方向で切断した縦断面図である。この場合には、略Ｌ字状に予備曲げされたアウタパネル１００のヘムフランジ１００ｂを更に折り曲げることにより、図１４に示すように、インナパネル１０２の先端面１０２ａを挟み込んで締結して縁部を構成している。   FIG. 14 is a longitudinal sectional view in which the edge of the automotive panel material according to the conventional configuration is cut in the thickness direction. In this case, by further bending the hem flange 100b of the outer panel 100 that has been pre-bent in a substantially L shape, the front end surface 102a of the inner panel 102 is sandwiched and fastened to form an edge as shown in FIG. ing.

特開２００３−１７０７４１号公報Japanese Patent Laid-Open No. 2003-170741

しかしながら、上記従来の構成では、アウタパネル１００のヘムフランジ１００ｂによりインナパネル１０２を挟み込んで締結しているだけであるため、締結強度の不足が懸念され、接着剤やスポット溶接等を併用して強度の不足を補う必要が生じる場合がある。また、アウタパネル１００の先端面１００ａが外部に露出することによる錆の発生等の問題を回避するため、例えば、ダストシーラ等のシール材１０４を塗布する必要がある（図１２参照）。このため、接着剤を塗布する工程、スポット溶接を行う工程及びシール材１０４を塗布する工程等が必要となり、製造工程数が多くなるという問題がある。   However, in the above-described conventional configuration, since the inner panel 102 is merely sandwiched and fastened by the hem flange 100b of the outer panel 100, there is a concern about insufficient fastening strength, and insufficient strength using an adhesive or spot welding together. May need to be compensated. Moreover, in order to avoid problems, such as generation | occurrence | production of rust by the front end surface 100a of the outer panel 100 being exposed outside, it is necessary to apply | coat the sealing material 104, such as a dust sealer, for example (refer FIG. 12). For this reason, the process of apply | coating an adhesive agent, the process of performing spot welding, the process of apply | coating the sealing material 104, etc. are needed, and there exists a problem that the number of manufacturing processes increases.

さらに、自動車用パネル材のように、縁部に多くの曲率を有する三次元形状が要求されるパネル材の縁部を曲げて締結する際には、締結後のしわの発生等の防止のため、曲率部分のヘムフランジだけを他の部分のヘムフランジに比べて短くする必要があった。このため、曲率を有する部分、例えば、図１５に示すようなコーナ部では、折り曲げ時には図１６中の矢印に示す方向の力が作用するため、しわが生じ易く、該コーナ部でのアウタパネル１００のヘムフランジ１００ｂを短くするしか対応する方法がなく、外観上見劣りがしていた。   Furthermore, when bending and fastening panel edges that require a three-dimensional shape with many curvatures at the edges, such as automotive panel materials, to prevent the occurrence of wrinkles after fastening. Only the hem flange of the curvature portion needs to be shorter than the hem flange of the other portion. For this reason, in a portion having a curvature, for example, a corner portion as shown in FIG. 15, a force in the direction shown by an arrow in FIG. There is only a corresponding method to shorten the hem flange 100b, and the appearance is inferior.

さらにまた、アウタパネル１００の折り曲げ部に、図１４中の矢印Ｂ方向（Ｒ０部分から広がる方向）の力が作用し、該折り曲げ部がやや丸くなり、曲率半径Ｒ０が大きくなることによって、いわゆるダレを生じるため、外観が一層損なわれるという問題があった。   Furthermore, a force in the direction of arrow B in FIG. 14 (the direction extending from the R0 portion) acts on the bent portion of the outer panel 100, the bent portion is slightly rounded, and the curvature radius R0 is increased. Therefore, there is a problem that the appearance is further deteriorated.

本発明は、係る従来の課題を考慮してなされたものであり、縁部に多くの曲率を有する三次元形状が要求される自動車用パネル材において、外観の優れた縁部を得ると共に、締結強度が高く、さらに、製造工程数を低減させることを可能とする自動車用パネル材を提供することを目的とする。   The present invention has been made in consideration of the conventional problems, and in an automotive panel material that requires a three-dimensional shape having a large curvature at the edge, an edge having an excellent appearance is obtained and fastened. An object of the present invention is to provide an automotive panel material having high strength and capable of reducing the number of manufacturing steps.

本発明の自動車用パネル材は、重ねられた複数の板部材が締結された縁部を有する自動車用パネル材であって、前記縁部は、前記各板部材の各先端面が内包された状態で巻締めされて締結されていることを特徴とする。   The automotive panel material of the present invention is an automotive panel material having an edge portion to which a plurality of stacked plate members are fastened, and the edge portion includes a front end surface of each plate member. It is characterized by being wound and fastened with.

このような構成によれば、多くの曲率を有する三次元形状が要求される自動車用パネル材であっても、外観に優れ、締結強度の高い縁部を得ることができる。   According to such a configuration, even an automotive panel material that requires a three-dimensional shape having a large amount of curvature can provide an edge portion with excellent appearance and high fastening strength.

また、前記縁部において最も外側の前記板部材の前記先端面より最も離れた曲げ部から形成され、前記縁部の外端部を形成する面を外側端面と称し、前記最も外側の前記板部材の前記外側端面とは、前記先端面を挟んで反対側に形成される面を内側端面と称するときに、前記内側端面の曲率半径を（ｒ）、前記各板部材の合計板厚を（Ｔ）、前記最も外側の前記板部材の板厚を（ｔ１）、前記外側端面の高さを（ｈ）とすると、
ｔ１＜ｒ≦（ｈ−Ｔ）／２
を満たすことにより、内側の板部材の先端面が外側の板部材により確実に挟み込まれる。このため、締結強度を高くすることができると共に、締結時における縁部の損傷を防止できる。なお、前記曲げ部とは、折り曲げされた曲げ部や湾曲された曲げ部等を含むものである。 Further, a surface that is formed from a bent portion that is farthest from the tip end surface of the outermost plate member at the edge portion, and a surface that forms an outer end portion of the edge portion is referred to as an outer end surface, and the outermost plate member. When the surface formed on the opposite side across the tip end surface is referred to as the inner end surface, the radius of curvature of the inner end surface is (r), and the total thickness of the plate members is (T ), When the thickness of the outermost plate member is (t1) and the height of the outer end surface is (h),
t1 <r ≦ (h−T) / 2
By satisfy | filling, the front end surface of an inner side plate member is pinched | interposed reliably by an outer side plate member. For this reason, while being able to make fastening intensity | strength high, damage to the edge part at the time of fastening can be prevented. Note that the bent portion includes a bent portion, a bent portion, and the like.

さらに、前記縁部において前記各板部材が互いに重なる方向には隙間がなく、前記各板部材同士が相互に接触していると、縁部での締結強度が一層向上すると共に、外観が一層向上する。   Furthermore, there is no gap in the direction in which the plate members overlap each other at the edge, and when the plate members are in contact with each other, the fastening strength at the edge is further improved and the appearance is further improved. To do.

さらにまた、前記縁部を前記板部材の板厚方向で切断した断面において、前記内包された前記各板部材の前記各先端面と接する各隙間部分の合計面積を（Ａ）、前記各板部材の板厚を夫々（ｔ１，ｔ２，．．．，ｔｎ）、円周率を（π）とすると、
Ａ≧Σ｛（ｔi／２）2／２｝・π （i＝１，２，．．．，ｎ）
を満たすことにより、内側の板部材及び外側の板部材の各先端面と接する部分に十分な隙間を確保できるため、各板部材の板厚等に若干のバラツキがあったとしても、確実に巻締めを行うことができる。 Furthermore, in the cross section obtained by cutting the edge in the plate thickness direction of the plate member, the total area of the gap portions in contact with the tip surfaces of the included plate members is (A), The plate thicknesses of each are (t1, t2,..., Tn) and the circumference is (π).
A ≧ Σ {(ti / 2 ) 2/2} · π (i = 1,2, ..., n)
By satisfying the above, a sufficient gap can be secured in the portion of the inner plate member and the outer plate member in contact with the respective front end surfaces, so that even if there is a slight variation in the plate thickness of each plate member, the winding is surely performed. Tightening can be done.

また、前記縁部において最も外側の前記板部材の前記先端面より最も離れた曲げ部から形成され、前記縁部の外端部を形成する面を外側端面と称するときに、前記外側端面の前記板部材からの曲げ角度は、９０°以下であると、曲げ部でのダレ等を抑制できるため外観がより一層向上する。なお、前記曲げ部とは、折り曲げされた曲げ部や湾曲された曲げ部等を含むものである。   Further, when a surface that forms the outer end portion of the edge portion is referred to as an outer end surface that is formed from a bent portion that is farthest from the tip end surface of the outermost plate member at the outer edge portion, When the bending angle from the plate member is 90 ° or less, sagging and the like at the bent portion can be suppressed, and the appearance is further improved. Note that the bent portion includes a bent portion, a bent portion, and the like.

本発明によれば、縁部に多くの曲率を有する三次元形状が要求される自動車用パネル材であっても、外観のよい縁部を得ることができる。さらに、本発明によれば、自動車用パネル材の縁部における締結強度を高めることができると共に、製造工程数を低減することができる。   According to the present invention, an edge having a good appearance can be obtained even for an automotive panel material that requires a three-dimensional shape having many curvatures at the edge. Furthermore, according to this invention, while being able to raise the fastening strength in the edge part of the panel material for motor vehicles, the number of manufacturing processes can be reduced.

以下、本発明に係る自動車用パネル材について好適な実施形態を挙げ、添付の図面を参照して詳細に説明する。   Hereinafter, preferred embodiments of an automotive panel material according to the present invention will be described in detail with reference to the accompanying drawings.

図１は、本発明の一実施形態に係る自動車用パネル材１０の適用例である自動車後部ドア１２の一部切欠斜視図であり、図２は、図１中のＡ矢視方向（車内側から自動車後部ドア１２を見た方向）からの自動車後部ドア１２の正面図である。   FIG. 1 is a partially cutaway perspective view of an automobile rear door 12 which is an application example of an automotive panel member 10 according to an embodiment of the present invention, and FIG. 2 is a view in the direction of arrow A in FIG. It is a front view of the automobile rear door 12 from the direction of looking at the automobile rear door 12 from.

自動車後部ドア１２は、板部材であるアウタパネル１４及びインナパネル１６が縁部１８で巻締めにより締結されて形成される自動車用パネル材１０と、この自動車用パネル材１０の上部に取り付けられる窓枠２０とから構成される。アウタパネル１４及びインナパネル１６は、例えば、所定の形状に打抜き加工されている板金素材（金属製）により形成される。   The automobile rear door 12 includes an automobile panel member 10 formed by fastening an outer panel 14 and an inner panel 16, which are plate members, at an edge portion 18, and a window frame attached to an upper portion of the automobile panel member 10. 20. The outer panel 14 and the inner panel 16 are formed of, for example, a sheet metal material (made of metal) that has been punched into a predetermined shape.

前記巻締めにより締結される縁部１８は、例えば、図２中の帯状網目部Ｈで示す部分であって、自動車後部ドア１２の全周に亘って三次元的に延在している。なお、縁部１８は、図３Ｃに示すように、アウタパネル１４の先端面１４ａとインナパネル１６の先端面１６ａとが内包されて巻締めにより締結されている。   The edge portion 18 fastened by the tightening is, for example, a portion indicated by a belt-like mesh portion H in FIG. 2 and extends three-dimensionally over the entire circumference of the automobile rear door 12. As shown in FIG. 3C, the edge 18 includes a front end surface 14a of the outer panel 14 and a front end surface 16a of the inner panel 16, and is fastened by winding.

次に、上記のように巻締めにより締結される縁部１８の成形方法の一例について、図３〜図５を参照して説明する。   Next, an example of a method for forming the edge 18 that is fastened by winding as described above will be described with reference to FIGS.

図３Ａは、本実施形態に係る自動車用パネル材１０の縁部の締結前に、アウタパネル１４とインナパネル１６とを重ねた状態を示す縦断面図であり、図３Ｂは、前記重ねたアウタパネル１４がインナパネル１６からずれている部分Ｌを略円形状に巻締め成形（カール成形）して縁部１９を形成した状態を示す縦断面図であり、図３Ｃは、前記カール成形した縁部１９を扁平に変形させ（潰し）ながら成形（シーム成形）して縁部１８を形成した状態を示す縦断面図である。   FIG. 3A is a longitudinal sectional view showing a state in which the outer panel 14 and the inner panel 16 are overlapped before fastening of the edge portion of the automotive panel member 10 according to the present embodiment, and FIG. 3B is a view of the stacked outer panel 14. FIG. 3C is a longitudinal sectional view showing a state in which the edge portion 19 is formed by winding (curling) the portion L that is displaced from the inner panel 16 into a substantially circular shape, and FIG. It is a longitudinal cross-sectional view which shows the state which shape | molded (seam shaping | molding), deform | transforming into flat (crushing) and forming the edge part 18.

先ず、図３Ａに示すように、アウタパネル１４とインナパネル１６とを重ねる。このとき、アウタパネル１４をインナパネル１６よりも部分Ｌだけずらして配置する。なお、この場合、アウタパネル１４及びインナパネル１６の先端面１４ａ及び先端面１６ａを有する先端部は予め若干曲げられ、フランジ部１４ｂ及びフランジ部１６ｂが形成されている（予備曲げ）。   First, as shown in FIG. 3A, the outer panel 14 and the inner panel 16 are overlapped. At this time, the outer panel 14 is arranged so as to be shifted by a portion L from the inner panel 16. In this case, the front end surface 14a and the front end surface 16a of the outer panel 14 and the inner panel 16 are slightly bent in advance to form a flange portion 14b and a flange portion 16b (preliminary bending).

次に、図３Ｂに示すように、アウタパネル１４の部分Ｌにカール成形を施して巻締めし、略円形状の縁部１９を形成する。   Next, as shown in FIG. 3B, the portion L of the outer panel 14 is curled and tightened to form a substantially circular edge 19.

この場合のカール成形方法としては、例えば、図４に示すように、重ねたアウタパネル１４及びインナパネル１６を、載置台２２の載置面２４上に載置し、押さえパッド２５により押圧固定する。その後、カール部２６を有するカールパンチ２８を載置面２４上を摺動させながら移動させて巻締めする。このように、アウタパネル１４の部分Ｌをカール部２６により略円弧状に成形すると、外観のよい縁部１９を容易に得ることができる。   As a curl forming method in this case, for example, as shown in FIG. 4, the stacked outer panel 14 and inner panel 16 are mounted on the mounting surface 24 of the mounting table 22 and pressed and fixed by the pressing pad 25. Thereafter, the curl punch 28 having the curl portion 26 is moved while being slid on the mounting surface 24 and then wound. As described above, when the portion L of the outer panel 14 is formed into a substantially arc shape by the curled portion 26, the edge portion 19 having a good appearance can be easily obtained.

次に、図３Ｃに示すように、前記縁部１９を扁平に変形するように押圧する、すなわち縁部１９を潰して巻締めるシーム成形を施して縁部１８を形成する。   Next, as shown in FIG. 3C, the edge portion 19 is pressed so as to be deformed flat, that is, the edge portion 19 is crushed and tightened to form the edge portion 18.

この場合のシーム成形方法としては、例えば、図５に示すように、載置面２４上でのカール成形後、押さえパッド２５によりアウタパネル１４及びインナパネル１６を固定した状態で、カールパンチ２８を退避させ、シームパンチ３０のシーム部３２にて前記縁部１９を扁平に変形させながらシーム成形する。このとき、縁部１９から縁部１８へと扁平に変形する過程では、アウタパネル１４及びインナパネル１６において塑性流動が生じる。そして、この塑性流動により、図７中の矢印Ａ方向（Ｒ部分へ向かう方向）の力が作用して縁部１８における曲率半径Ｒ部分を十分に小さくすることができ、ダレの発生が防止されるため、一層外観のよい縁部１８を容易に得ることができる。   As a seam forming method in this case, for example, as shown in FIG. 5, the curl punch 28 is retracted in a state where the outer panel 14 and the inner panel 16 are fixed by the pressing pad 25 after the curl forming on the mounting surface 24. Then, seam forming is performed while the edge portion 19 is deformed flat at the seam portion 32 of the seam punch 30. At this time, plastic flow occurs in the outer panel 14 and the inner panel 16 in the process of flatly deforming from the edge 19 to the edge 18. Then, this plastic flow allows a force in the direction of arrow A (the direction toward the R portion) in FIG. 7 to act to sufficiently reduce the radius of curvature R portion at the edge 18, thereby preventing the occurrence of sagging. Therefore, the edge 18 having a better appearance can be easily obtained.

また、自動車用パネル材１０では、上記のように巻締めにより締結することで、図８に示すようなコーナ部において、曲げる際に図９中の矢印に示す方向の力が作用する。これにより、上記従来の構成（図１５及び図１６参照）では材料の縮みによりしわが発生していた部分（Ｓｉｎ側）で材料が伸びるため、一層曲率の小さなコーナ部等においても予備曲げ時のフランジ長さを短くすることなく、しわの発生を防止しながら成形することができる。   Moreover, in the automotive panel member 10, by fastening by winding as described above, a force in the direction shown by the arrow in FIG. 9 acts when bending at the corner as shown in FIG. As a result, in the conventional configuration (see FIGS. 15 and 16), the material stretches in the portion (Sin side) where wrinkles are generated due to the shrinkage of the material. Without shortening the flange length, molding can be performed while preventing the generation of wrinkles.

なお、本実施形態に係る自動車用パネル材１０では、その適用箇所、例えば、ドアやボンネット等における必要な締結強度や要求される外観形状等に応じて、上記カール成形のみを施した縁部１９を形成して用いてもよく、必ずしもシーム成形まで行う必要はない。すなわち、比較的締結強度の要求が低い箇所に用いられる自動車用パネル材１０には、カール成形のみを施し、より高い締結強度の要求がある箇所に用いられる自動車用パネル材１０には、シーム成形まで施行する等使い分けると好適であるが、詳細は後述する。   In addition, in the automotive panel material 10 according to the present embodiment, the edge portion 19 subjected only to the curl molding according to the application location, for example, a required fastening strength in a door, a bonnet or the like, a required external shape, or the like. May be used, and it is not always necessary to perform seam forming. That is, only the curl molding is applied to the automotive panel material 10 used in a place where the fastening strength requirement is relatively low, and the seam molding is applied to the automotive panel material 10 used in a location requiring a higher fastening strength. It is preferable to use it properly, for example, but it will be described later in detail.

次に、基本的には以上のように形成される自動車用パネル材１０の作用効果について、主に図６及び図７を参照して説明する。図６は、カール成形後の自動車用パネル材１０の縁部１９の縦断面図であり、図７は、シーム成形後の自動車用パネル材１０の縁部１８の縦断面図である。   Next, the effect of the automotive panel member 10 formed basically as described above will be described mainly with reference to FIGS. 6 and 7. FIG. 6 is a longitudinal sectional view of the edge portion 19 of the automotive panel material 10 after curl molding, and FIG. 7 is a longitudinal sectional view of the edge portion 18 of the automotive panel material 10 after seam molding.

本実施形態の自動車用パネル材１０では、図６及び図７に示すように、カール成形後の縁部１９及びシーム成形後の縁部１８において、最も外側の板部材であるアウタパネル１４の先端面１４ａより最も離れた曲げ部から形成され、縁部１９及び縁部１８の外端部を形成する面を外側端面Ｓｏｕｔと称し、この外側端面Ｓｏｕｔとは、先端面１４ａを挟んで反対側に形成される面を内側端面Ｓｉｎと称するものとする。   In the automotive panel member 10 of the present embodiment, as shown in FIGS. 6 and 7, at the edge 19 after curl forming and the edge 18 after seam forming, the front end surface of the outer panel 14 that is the outermost plate member The surface that is formed from the bending portion farthest from 14a and forms the outer end portion of the edge portion 19 and the edge portion 18 is referred to as an outer end surface Sout, and this outer end surface Sout is formed on the opposite side across the tip end surface 14a. The surface to be formed is referred to as an inner end surface Sin.

そして、この場合、内側端面Ｓｉｎの曲率半径ｒと、アウタパネル１４の板厚ｔ１と、アウタパネル１４及びインナパネル１６の合計板厚Ｔと、縁部１９の高さ（外側端面Ｓｏｕｔの高さ）ｈとの関係は、次式（１）を満たすとよい。
ｔ１＜ｒ≦（ｈ−Ｔ）／２ （１） In this case, the curvature radius r of the inner end surface Sin, the plate thickness t1 of the outer panel 14, the total plate thickness T of the outer panel 14 and the inner panel 16, and the height of the edge portion 19 (height of the outer end surface Sout) h It is preferable that the following relationship (1) is satisfied.
t1 <r ≦ (h−T) / 2 (1)

すなわち、ｔ１＜ｒを満たすことにより、インナパネル１６の先端面１６ａがアウタパネル１４により確実に挟み込まれるため、締結強度を高くすることが可能となる。また、ｒ≦（ｈ−Ｔ）／２を満たすことにより、カール成形を施す際に、インナパネル１６の先端面１６ａにアウタパネル１４が接触することを防止しながら巻締めすることが可能となり、縁部１９の損傷を防止できる。   That is, by satisfying t1 <r, the front end surface 16a of the inner panel 16 is securely sandwiched by the outer panel 14, and thus the fastening strength can be increased. Further, by satisfying r ≦ (h−T) / 2, it becomes possible to perform winding while preventing the outer panel 14 from coming into contact with the front end surface 16a of the inner panel 16 when curling. Damage to the portion 19 can be prevented.

一方、図７に示すように、アウタパネル１４の板厚をｔ１、インナパネル１６の板厚をｔ２、円周率をπとすると、アウタパネル１４の先端面１４ａと接する間隙３４と、インナパネル１６の先端面１６ａと接する間隙３６との合計面積Ａ１は、次式（２）を満たすとよい。
Ａ１≧｛（ｔ１／２）2／２｝＋｛（ｔ２／２）2／２｝・π （２） On the other hand, as shown in FIG. 7, when the thickness of the outer panel 14 is t1, the thickness of the inner panel 16 is t2, and the circumferential ratio is π, the gap 34 in contact with the front end surface 14a of the outer panel 14 and the inner panel 16 The total area A1 of the gap 36 in contact with the tip surface 16a may satisfy the following formula (2).
A1 ≧ {(t1 / 2) 2/2} + {(t2 / 2) 2/2} · π (2)

すなわち、間隙３４と間隙３６との合計面積Ａ１が、先端面１４ａを直径とする半円の面積と、先端面１６ａを直径とする半円の面積との合計面積以上であると、アウタパネル１４及びインナパネル１６の先端面１４ａ及び先端面１６ａと接する部分に十分な隙間を確保できるため、アウタパネル１４やインナパネル１６の板厚等に若干のバラツキがあったとしても、確実に巻締めすることが可能となる。   That is, if the total area A1 of the gap 34 and the gap 36 is equal to or greater than the total area of the area of the semicircle whose diameter is the tip surface 14a and the area of the semicircle whose diameter is the tip surface 16a, the outer panel 14 and A sufficient gap can be secured in the tip surface 14a of the inner panel 16 and the portion in contact with the tip surface 16a, so that even if there is a slight variation in the thickness of the outer panel 14 or the inner panel 16, the winding can be performed securely. It becomes possible.

なお、上式（２）は、巻締めにより締結される板部材が、上記のようにアウタパネル１４とインナパネル１６の２枚のみの場合に限らず、３枚以上の場合にも適用することができる。この場合には、各板部材の各先端面と接する各間隙部分の合計面積をＡ、各板部材の各板厚を（ｔ１，ｔ２，．．．，ｔｎ）とすると、次式（３）のように表すことができる。
Ａ≧Σ｛（ｔi／２）2／２｝・π （i＝１，２，．．．，ｎ） （３） The above equation (2) is not limited to the case where there are only two plate members of the outer panel 14 and the inner panel 16 as described above, but can be applied to the case where there are three or more plate members. it can. In this case, assuming that the total area of each gap portion in contact with each tip surface of each plate member is A and each plate thickness of each plate member is (t1, t2,..., Tn), the following equation (3) It can be expressed as
A ≧ Σ {(ti / 2 ) 2/2} · π (i = 1,2, ..., n) (3)

つまり、各板部材の各先端面と接する各間隙部分の合計面積Ａが、各板部材の各先端面を直径とする各半円の合計面積以上となればよい。   That is, the total area A of the gap portions in contact with the front end surfaces of the plate members may be equal to or greater than the total area of the semicircles having the diameters of the front end surfaces of the plate members.

さらに、図７に示すように、シーム成形後の縁部１８における外側端面Ｓｏｕｔのアウタパネル１４からの曲げ角度θが９０°以下であると、曲率半径Ｒ部分を十分に小さくすることができ、ダレの発生が防止されて縁部１８の外観が一層向上する。   Further, as shown in FIG. 7, when the bending angle θ of the outer end surface Sout of the edge 18 after seam forming from the outer panel 14 is 90 ° or less, the radius of curvature R portion can be made sufficiently small. Is prevented, and the appearance of the edge 18 is further improved.

また、図７に示すように、縁部１８においてアウタパネル１４とインナパネル１６が互いに重なる方向（図７中の点線Ｂの方向）には隙間がないように、アウタパネル１４とインナパネル１６とを相互に接触させてシーム成形を施すと、縁部１８において上記塑性流動が生じるため、当該縁部１８での締結強度が一層向上すると共に、外観が一層向上するため好適である。   Further, as shown in FIG. 7, the outer panel 14 and the inner panel 16 are connected to each other so that there is no gap in the direction where the outer panel 14 and the inner panel 16 overlap each other at the edge 18 (the direction of the dotted line B in FIG. 7). When the seam molding is performed in contact with the rim, the plastic flow occurs at the edge portion 18, and therefore, the fastening strength at the edge portion 18 is further improved and the appearance is further improved.

以上のように、本実施形態に係る自動車用パネル材１０によれば、自動車後部ドア１２のような曲率を多く有する三次元的な縁部であっても、均一のフランジを有する縁部１８が形成されるため、外観が向上する。   As described above, according to the automotive panel member 10 according to the present embodiment, the edge 18 having a uniform flange is formed even in a three-dimensional edge having a large curvature like the automobile rear door 12. Since it is formed, the appearance is improved.

また、アウタパネル１４及びインナパネル１６の先端面１４ａ及び先端面１６ａを内包するように巻締めすることによる当該先端面１４ａ、１６ａでの防錆及びシール材の塗布工程等の省略が可能となり、コスト低減や製造工程数の低減が可能となる。   Further, it is possible to omit the rust prevention and sealing material application process on the front end surfaces 14a and 16a by winding the front end surface 14a and the front end surface 16a of the outer panel 14 and the inner panel 16 so as to be included. Reduction and the number of manufacturing processes can be reduced.

さらに、カール成形後にシーム成形を施すことにより、上記従来のヘミング構造の曲率Ｒ０（図１４参照）よりも曲率Ｒを小さくすることができるため（図７参照）、いわゆるダレを抑制でき、外観が一層向上する。   Furthermore, by performing seam molding after curl molding, the curvature R can be made smaller than the curvature R0 (see FIG. 14) of the conventional hemming structure (see FIG. 7). Further improvement.

また、上記従来のヘミング構造に比べて、縁部１８での締結強度が向上するため、より強固な縁部１８を有する自動車用パネル材１０を得ることができる。   In addition, since the fastening strength at the edge 18 is improved as compared with the conventional hemming structure, the automotive panel member 10 having the stronger edge 18 can be obtained.

ところで、本実施形態に係る自動車用パネル材１０では、上記のような構成により、アウタパネル１４とインナパネル１６との板厚の違いの影響を受けることなく、カール成形及びシーム成形による巻締めによる締結を行うことができる。   By the way, in the automotive panel material 10 according to the present embodiment, with the above-described configuration, fastening by curling and seam forming is performed without being affected by the difference in thickness between the outer panel 14 and the inner panel 16. It can be performed.

例えば、図１０Ａに示すように、アウタパネル１４の板厚ｔ１がインナパネル１６の板厚ｔ２よりも厚い場合、すなわち、ｔ１＞ｔ２の場合であっても、図１０Ｂ及図１０Ｃに示すように、カール成形及びシーム成形を施し、巻締めにより締結された縁部１８、１９を得ることが可能である。   For example, as shown in FIG. 10A, even when the thickness t1 of the outer panel 14 is thicker than the thickness t2 of the inner panel 16, that is, when t1> t2, as shown in FIGS. 10B and 10C, It is possible to obtain curled and seam molded edges 18 and 19 that are fastened by winding.

また、図１１Ａに示すように、アウタパネル１４の板厚ｔ１がインナパネル１６の板厚ｔ２よりも薄い場合、すなわち、ｔ１＜ｔ２の場合であっても、図１１Ｂ及図１１Ｃに示すように、カール成形及びシーム成形を施して、巻締めにより締結された縁部１８、１９を得ることが可能である。   Further, as shown in FIG. 11A, even when the thickness t1 of the outer panel 14 is thinner than the thickness t2 of the inner panel 16, that is, when t1 <t2, as shown in FIGS. 11B and 11C, It is possible to obtain curled and seam shaped edges 18 and 19 which are fastened by winding.

なお、本発明は上記実施形態に限らず、本発明の要旨を逸脱することなく、種々の構成を採り得ることは当然可能である。   It should be noted that the present invention is not limited to the above-described embodiment, and it is naturally possible to adopt various configurations without departing from the gist of the present invention.

例えば、上記実施形態では、自動車用パネル材１０として、アウタパネル１４及びインナパネル１６の２枚の板部材を用いるものとしたが、これに限らず、前記板部材を３枚以上としても本発明に係る自動車用パネルを実施することは当然可能である。   For example, in the above-described embodiment, the two panel members of the outer panel 14 and the inner panel 16 are used as the automotive panel member 10. However, the present invention is not limited to this, and the present invention may be applied to three or more plate members. It is naturally possible to implement such an automotive panel.

また、上記実施形態の自動車用パネル材１０については、自動車後部ドア１２を例示して説明したが、これに限らず、その他の箇所についても適用可能となることはもちろんである。例えば、自動車用パネル材１０の適用箇所としては、図１２及び図１３に示すように、自動車前部ドア３８、ボンネット４０、トランク４２等を挙げることができる。   In addition, the automobile panel member 10 of the above embodiment has been described by taking the automobile rear door 12 as an example. However, the invention is not limited to this and can be applied to other places. For example, as an application part of the panel member 10 for automobiles, as shown in FIGS. 12 and 13, an automobile front door 38, a hood 40, a trunk 42, and the like can be cited.

また、上記のように、本実施形態に係る自動車用パネル材１０では、その用途に応じて、カール成形のみを施した縁部１９を形成させる場合と、シーム成形を施した縁部１８を形成させる場合とが選択可能である。このため、例えば、上記ボンネット４０及びトランク４２を例として説明すると、ボンネット４０のフロントガラス４４と対峙する縁部４０ａ及びトランク４２のリアガラス４６と対峙する縁部４２ａについては、カール成形のみを施すとよい。一方、ボンネット４０の前記縁部４０ａ以外の縁部４０ｂ及びトランク４２の前記縁部４２ａ以外の縁部４２ｂについては、シーム成形まで施すとよい。   In addition, as described above, in the automotive panel member 10 according to the present embodiment, the edge 19 subjected to only curl molding and the edge 18 subjected to seam molding are formed according to the application. You can select whether or not For this reason, for example, the bonnet 40 and the trunk 42 will be described as an example. When the edge portion 40a facing the windshield 44 of the bonnet 40 and the edge portion 42a facing the rear glass 46 of the trunk 42 are only subjected to curl molding. Good. On the other hand, the edge portion 40b other than the edge portion 40a of the bonnet 40 and the edge portion 42b other than the edge portion 42a of the trunk 42 may be subjected to seam molding.

本発明の一実施形態に係る自動車用パネル材の適用例である自動車後部ドアの一部切欠斜視図である。It is a partially cutaway perspective view of an automobile rear door, which is an application example of an automotive panel material according to an embodiment of the present invention. 図１中のＡ矢視方向からの自動車後部ドアの正面図である。It is a front view of the motor vehicle rear door from the A arrow direction in FIG. 図３Ａは、前記自動車用パネル材の縁部の締結前にアウタパネルとインナパネルとを重ねた状態を示す縦断面図であり、図３Ｂは、前記重ねたアウタパネルとインナパネルをカール成形した状態を示す縦断面図であり、図３Ｃは、前記カール成形した縁部をシーム成形した状態を示す縦断面図である。FIG. 3A is a longitudinal sectional view showing a state in which the outer panel and the inner panel are overlapped before the edge portion of the automotive panel member is fastened, and FIG. 3B is a state in which the stacked outer panel and the inner panel are curled. FIG. 3C is a longitudinal sectional view showing a state where the curled edge portion is seam-formed. 前記自動車用パネル材の縁部をカール成形する方法の一例を示す説明図である。It is explanatory drawing which shows an example of the method of curling the edge of the said panel material for motor vehicles. 前記自動車用パネル材の縁部をシーム成形する方法の一例を示す説明図である。It is explanatory drawing which shows an example of the method of seam forming the edge part of the said panel material for motor vehicles. 前記自動車用パネル材のカール成形後の縁部の縦断面図である。It is a longitudinal cross-sectional view of the edge part after the curl shaping | molding of the said panel material for motor vehicles. 前記自動車用パネル材のシーム成形後の縁部の縦断面図である。It is a longitudinal cross-sectional view of the edge part after the seam shaping | molding of the said panel material for motor vehicles. 前記自動車用パネル材のコーナ部を含む平面図である。It is a top view containing the corner part of the said panel material for motor vehicles. 前記コーナ部における縁部の拡大斜視図であるIt is an expansion perspective view of the edge part in the said corner part. 図１０Ａは、インナパネルよりもアウタパネルの方が板厚が厚い場合における縁部の締結前にアウタパネルとインナパネルとを重ねた状態を示す縦断面図であり、図１０Ｂは、前記重ねたアウタパネルがインナパネルをカール成形した状態を示す縦断面図であり、図１０Ｃは、前記カール成形した縁部をシーム成形した状態を示す縦断面図である。FIG. 10A is a longitudinal sectional view showing a state in which the outer panel and the inner panel are overlapped before fastening of the edge when the outer panel is thicker than the inner panel, and FIG. FIG. 10C is a longitudinal sectional view showing a state where the inner panel is curled, and FIG. 10C is a longitudinal sectional view showing a state where the curled edge is seam-formed. 図１１Ａは、インナパネルよりもアウタパネルの方が板厚が薄い場合における縁部の締結前にアウタパネルとインナパネルとを重ねた状態を示す縦断面図であり、図１１Ｂは、前記重ねたアウタパネルがインナパネルをカール成形した状態を示す縦断面図であり、図１１Ｃは、前記カール成形した縁部をシーム成形した状態を示す縦断面図である。FIG. 11A is a longitudinal sectional view showing a state in which the outer panel and the inner panel are overlapped before fastening of the edge when the outer panel is thinner than the inner panel, and FIG. FIG. 11C is a longitudinal sectional view showing a state in which the inner panel is curled, and FIG. 11C is a longitudinal sectional view showing a state in which the curled edge portion is seam-formed. 前記自動車用パネル材の自動車への適用箇所を示す車体前方からの斜視図である。It is a perspective view from the vehicle body front which shows the application location to the motor vehicle of the said panel material for motor vehicles. 前記自動車用パネル材の自動車への適用箇所を示す車体後方からの斜視図である。It is a perspective view from the vehicle body rear which shows the application location to the motor vehicle of the said panel material for motor vehicles. 従来方法における自動車用パネル材の縁部の縦断面図である。It is a longitudinal cross-sectional view of the edge part of the panel material for motor vehicles in the conventional method. 前記従来方法における自動車用パネル材のコーナ部を含む平面図である。It is a top view including the corner part of the panel material for motor vehicles in the said conventional method. 前記従来方法における自動車用パネル材のコーナ部における縁部の拡大斜視図である。It is an expansion perspective view of the edge in the corner part of the panel material for cars in the above-mentioned conventional method.

符号の説明Explanation of symbols

１０…自動車用パネル材 １２…自動車後部ドア
１４、１００…アウタパネル
１４ａ、１６ａ、１００ａ、１０２ａ…先端面
１４ｂ、１６ｂ…フランジ部 １６、１０２…インナパネル
１８、１９…縁部 ２２…載置台
２４…載置面 ２５…押さえパッド
２６…カール部 ２８…カールパンチ
３０…シームパンチ ３２…シーム部
３４、３６…間隙 DESCRIPTION OF SYMBOLS 10 ... Automotive panel material 12 ... Automotive rear doors 14, 100 ... Outer panels 14a, 16a, 100a, 102a ... Front end surfaces 14b, 16b ... Flange portions 16, 102 ... Inner panels 18, 19 ... Edge portions 22 ... Mounting table 24 ... Placement surface 25 ... Presser pad 26 ... Curl part 28 ... Curl punch 30 ... Seam punch 32 ... Seam parts 34, 36 ... Gap

Claims (5)

重ねられた複数の板部材が締結された縁部を有する自動車用パネル材であって、
前記縁部は、前記各板部材の各先端面が異なる板部材に内包された状態で巻締めされて締結されていることを特徴とする自動車用パネル材。 An automotive panel material having an edge to which a plurality of stacked plate members are fastened,
The panel member for an automobile according to claim 1, wherein the edge portion is wound and fastened in a state where the front end surfaces of the plate members are included in different plate members . 重ねられた複数の板部材がカール成形され、その後にシーム成形されて締結された縁部を有する自動車用パネル材であって、
前記縁部は、前記各板部材の各先端面が内包された状態で巻締めされて締結されており、
前記縁部において最も外側の前記板部材の曲げ部から形成され、前記縁部の外端部を形成する面を外側端面と称し、
前記外側端面とは、前記最も外側の前記板部材の先端面を挟んで反対側に形成される面を内側端面と称するときに、
カール成形後シーム成形前の前記内側端面の曲率半径を（ｒ）、前記各板部材の合計板厚を（Ｔ）、前記最も外側の前記板部材の板厚を（ｔ１）、カール成形後シーム成形前の前記縁部の高さを（ｈ）とすると、
ｔ１＜ｒ≦（ｈ−Ｔ）／２
を満たすことを特徴とする自動車用パネル材。 A panel member for automobile having an edge portion in which a plurality of stacked plate members are curled and then seamed and fastened,
The edge portion is tightened by being tightened in a state where each front end surface of each plate member is included,
The formed from bending portion of the outermost of the plate member at the edges, the surfaces forming the outer end of the edge portion is referred to as a outer end surface,
Before The Kisotogawa end surface, when the surface to be formed on the opposite side is referred to as the inner end surface across the distal end surface of the outermost of said plate member,
The radius of curvature of the inner end surface after curl molding and before seam molding is (r), the total plate thickness of each plate member is (T), the plate thickness of the outermost plate member is (t1), and the seam after curl molding When the height of the edge before molding is (h),
t1 <r ≦ (h−T) / 2
An automotive panel material characterized by satisfying 請求項１記載の自動車用パネル材において、
前記縁部において前記各板部材が互いに重なる方向には隙間がなく、前記各板部材同士が相互に接触していることを特徴とする自動車用パネル材。 In automotive panel material according to claim 1 Symbol placement,
An automotive panel material characterized in that there is no gap in a direction in which the plate members overlap each other at the edge, and the plate members are in contact with each other. 請求項３記載の自動車用パネル材において、
前記縁部を前記板部材の板厚方向で切断した断面において、
前記内包された前記各板部材の前記各先端面と接する各隙間部分の合計面積を（Ａ）、前記各板部材の板厚を夫々（ｔ１，ｔ２，．．．，ｔｎ）、円周率を（π）とすると、
Ａ≧Σ｛（ｔi／２）2／２｝・π（i＝１，２，．．．，ｎ）
を満たすことを特徴とする自動車用パネル材。 The automotive panel material according to claim 3,
In the cross section in which the edge is cut in the plate thickness direction of the plate member,
The total area of each gap portion in contact with each tip surface of each of the included plate members is (A), the plate thickness of each plate member is (t1, t2,..., Tn), Let (π) be
A ≧ Σ {(ti / 2 ) 2/2} · π (i = 1,2, ..., n)
An automotive panel material characterized by satisfying 請求項１、３又は４に記載の自動車用パネル材において、
最も外側の前記板部材は、前記縁部の外端部に形成された第１平坦面と、
前記第１平坦面に連なり、前記自動車用パネル材の外側面を構成する第２平坦面と、を含み、
前記第１平坦面の前記第２平坦面に対する傾斜角度が、９０°以下であることを特徴とする自動車用パネル材。 The automotive panel material according to claim 1, 3 or 4 ,
The outermost plate member includes a first flat surface formed at an outer end of the edge,
A second flat surface that continues to the first flat surface and constitutes an outer surface of the automotive panel material;
The automotive panel material , wherein an inclination angle of the first flat surface with respect to the second flat surface is 90 ° or less.
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US11/668,845 US7846555B2 (en) 2006-02-02 2007-01-30 Panel fastening method and panel member for automobile
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