JP2005349398A - Panel joining structure and joining method - Google Patents

Panel joining structure and joining method Download PDF

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JP2005349398A
JP2005349398A JP2004169397A JP2004169397A JP2005349398A JP 2005349398 A JP2005349398 A JP 2005349398A JP 2004169397 A JP2004169397 A JP 2004169397A JP 2004169397 A JP2004169397 A JP 2004169397A JP 2005349398 A JP2005349398 A JP 2005349398A
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panel
joining
side sill
flange portion
welding
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Akihito Yamazaki
昭仁 山▲崎▼
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a joining structure which is excellent in joining strength and does not need majoir reconstruction equipment in the case of superposing a side sill inner panel with a bend-formed flange at the end of a floor panel and joining both panels by laser welding with the flange as the joining face. <P>SOLUTION: In the joint between the flange 2b on the floor panel 2 end and the side sill inner panel 4, there are preliminarily formed holes 6, 6... at positions that are lower than spot welding positions 5, 5... in the side sill inner panel 4 and that are facing correspondingly near the base of the flange 2b. Laser welding is performed, from the side sill inner panel 4 end, at the inner corner formed by the side sill inner panel 4 and the inner circumferential face of the holes 6, 6..., with both parts welded together with weld beads 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、レーザ溶接によるパネルの接合構造および接合方法に関し、特に一方のパネルに曲折形成したフランジ部を接合面としてパネル同士を溶接接合するにあたり、双方のパネルの板厚が異なっていてもフランジ部の基部近傍で両者を確実に溶接接合できるようにしたパネルの接合構造および接合方法に関するものである。   BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining structure and joining method of panels by laser welding, and in particular, when the panels are welded to each other with a flange portion bent on one panel as a joining surface, the flanges are different even if the panel thicknesses of both panels are different. The present invention relates to a panel joining structure and a joining method in which both can be securely welded together in the vicinity of the base of the part.

比較的板厚の大きなパネル同士のレーザ溶接方法として、例えば特許文献１に記載のように、溶接対象となるパネルのレーザビーム照射位置にレーザビームの照射角度と同等以上の傾きを有するテーパ状の凹部を予め形成しておき、この凹部に対しレーザビームを照射することで溶接を行うようにした方法が提案されている。   As a laser welding method for panels having a relatively large plate thickness, for example, as described in Patent Document 1, a tapered shape having an inclination equal to or greater than a laser beam irradiation angle at a laser beam irradiation position of a panel to be welded. A method has been proposed in which a recess is formed in advance and welding is performed by irradiating the recess with a laser beam.

また、自動車の車体パネル等の接合に適した溶接法として、例えば特許文献２に記載のように、双方のパネルをフレア継手の形態をもってレーザ溶接を施した上で、そのフレア継手を形成しているフランジ部の先端部同士を突き合わせるようにした方法が提案されている。   Further, as a welding method suitable for joining automobile body panels and the like, for example, as described in Patent Document 2, after both of the panels are subjected to laser welding in the form of a flare joint, the flare joint is formed. There has been proposed a method in which the end portions of the flange portions are abutted with each other.

その一方、自動車の車体においてそのフロアパネルとサイドシルの結合には、フロアパネル側より曲折形成したフランジ部をもってスポット溶接にて接合する方式が多く採用されている。すなわち、特許文献３に記載のように、フロアパネルの端部に上向きで且つほぼ直角に曲折形成したフランジ部をサイドシルのインナパネル（シルインナ）に重合させて、サイドシルの長手方向に沿って多数打点のスポット溶接を施すことによりフランジ部を接合部として両者を溶接接合してある。
特許第３４１０５９０号公報（図１） 特許第３１１３１０７号公報（図９） 特開平１１−２９１９５３号公報（図１） On the other hand, in the body of an automobile, a method of joining the floor panel and the side sill by spot welding with a flange portion bent from the floor panel side is often employed. That is, as described in Patent Document 3, the flange portion bent upward and substantially perpendicularly to the end of the floor panel is polymerized to the inner panel of the side sill (sill inner), and a large number of hit points along the longitudinal direction of the side sill The two parts are welded and joined using the flange part as a joint part by spot welding.
Japanese Patent No. 3410590 (FIG. 1) Japanese Patent No. 3113107 (FIG. 9) JP-A-11-291953 (FIG. 1)

特許文献１に記載の方法では、比較的板厚の大きな銅製の端子等の溶接には適用することができたとしても、自動車の車体パネルのように板厚が１．０ｍｍ〜２．０ｍｍ程度の鋼板もしくはいわゆる高張力鋼板のように凹部を形成しにくい鋼板の溶接には適用することができない。   In the method described in Patent Document 1, even if it can be applied to welding of a copper terminal having a relatively large thickness, the thickness is about 1.0 mm to 2.0 mm like a body panel of an automobile. It cannot be applied to the welding of steel plates that are difficult to form recesses, such as steel plates or so-called high-tensile steel plates.

また、特許文献２に記載のようにフレア継手の形態を基本する溶接方法では、例えば特許文献３に記載のような自動車のフロアパネルとサイドシルインナパネルとの溶接に適用して、スポット溶接に代わる溶接法もしくはスポット溶接と併用する溶接法として車両の下面側から溶接しようとする場合に、フロアパネルを主体とする車体を天地反転させて姿勢変更する必要があることから、設備の大がかりな改造が必要となり、コストアップが余儀なくされることとなって好ましくない。   Moreover, in the welding method based on the form of a flare joint as described in Patent Document 2, for example, it is applied to welding of a vehicle floor panel and a side sill inner panel as described in Patent Document 3 to replace spot welding. When welding from the underside of the vehicle as a welding method or a welding method that is used in combination with spot welding, it is necessary to change the posture by reversing the vehicle body, mainly the floor panel, so that large-scale remodeling of equipment is required. This is not desirable because it necessitates an increase in cost.

この場合において、スポット溶接に代わる溶接法もしくはスポット溶接と併用する溶接法として特許文献２に記載のようなレーザ溶接の採用を試みようとしているのは、フロアパネル側のフランジ部とサイドシルインナパネルとのスポット溶接による打点位置は、フロアパネルの一般面と同等高さ位置に設定するのが接合強度向上の上で有利であるにもかかわらず、スポット溶接の特殊性として電極チップがフロアパネル等と干渉するのを回避するために、少なくとも電極チップの半径分だけはフロアパネルの一般面からオフセットした位置に打点位置を設定せざるを得ないからである。   In this case, it is attempted to adopt laser welding as described in Patent Document 2 as a welding method that replaces spot welding or is used in combination with spot welding. The flange on the floor panel side and the side sill inner panel Although it is advantageous to improve the joint strength that the spot position by spot welding is set to the same height as the general surface of the floor panel, the electrode tip is the floor panel etc. as a special feature of spot welding This is because in order to avoid interference, the hitting point position must be set at a position offset from the general surface of the floor panel at least by the radius of the electrode tip.

本発明は、このような課題に着目してなされたものであり、とりわけ一方のパネルの端部に曲折形成したフランジ部を他方のパネルと重合させ、そのフランジ部を接合面として双方のパネル同士をレーザ溶接にて接合するにあたり、接合強度に優れ、しかも設備の大がかりな改造を必要としない接合構造を提供しようとするものである。   The present invention has been made paying attention to such a problem, and in particular, the flange portion bent at the end portion of one panel is overlapped with the other panel, and both the panels are used as a joint surface. It is an object of the present invention to provide a joining structure that is excellent in joining strength and does not require extensive modification of equipment when joining the two by laser welding.

請求項１に記載の発明は、一方のパネルの端部に曲折形成したフランジ部を他方のパネルと重合させ、そのフランジ部を接合面として双方のパネル同士を溶接接合した構造として、他方のパネルのうち上記フランジ部の基部近傍と重合する位置に穴を形成し、上記フランジ部と穴の内周面とのなす内隅部にレーザ溶接を施して溶接接合したことを特徴とする。   The invention according to claim 1 is a structure in which a flange portion bent at the end of one panel is overlapped with the other panel, and the two panels are welded together with the flange portion as a joining surface. Among them, a hole is formed at a position overlapping with the vicinity of the base of the flange portion, and laser welding is applied to an inner corner portion formed by the flange portion and the inner peripheral surface of the hole, and the welding is joined.

この場合において、例えば請求項２に記載のように、一方のパネルより他方のパネルの方がその板厚が大きく設定されているとともに、上記フランジ部の高さ方向中央部をスポット溶接にて他方のパネルと溶接接合してあるものとする。   In this case, for example, as described in claim 2, the thickness of the other panel is set larger than that of one panel, and the center portion in the height direction of the flange portion is spot welded to the other panel. It shall be welded to the panel.

また、上記接合構造は、例えば請求項３に記載のように、自動車の車体のフロアパネルとサイドシルインナパネルとの接合構造に適用されるものとし、この場合には、請求項４に記載のように、上記サイドシルインナパネルの長手方向に沿って複数の穴が所定のピッチで形成されているものとする。   Moreover, the said joining structure shall be applied to the joining structure of the floor panel of a vehicle body and a side sill inner panel, for example as described in Claim 3, In this case, as described in Claim 4 In addition, it is assumed that a plurality of holes are formed at a predetermined pitch along the longitudinal direction of the side sill inner panel.

請求項５に記載の発明は、請求項１に記載の技術を実質的に接合方法として捉えたものであって、一方のパネルの端部に曲折形成したフランジ部を他方のパネルと重合させ、そのフランジ部を接合面として双方のパネル同士を溶接接合する方法を前提として、他方のパネルのうち上記フランジ部の基部近傍と重合する位置に予め穴を形成しておき、上記穴が形成されていない位置で且つフランジ部の高さ方向中央部をスポット溶接にて他方のパネルと溶接接合した上で、上記フランジ部と穴の内周面とのなす内隅部に対し他方のパネル側からレーザビームを照射してレーザ溶接を施すことを特徴とする。   The invention according to claim 5 is the one that substantially captures the technique according to claim 1 as a joining method, and superimposes a flange portion bent at the end of one panel with the other panel, On the premise of the method of welding and joining both panels with the flange portion as the joining surface, a hole is formed in advance at the position where the other panel is overlapped with the vicinity of the base of the flange portion, and the hole is formed. The center part in the height direction of the flange part is welded and joined to the other panel by spot welding, and the laser is applied from the other panel side to the inner corner part formed by the flange part and the inner peripheral surface of the hole. Laser welding is performed by irradiating a beam.

この接合方法も、請求項６に記載のように、自動車の車体のフロアパネルとサイドシルインナパネルとの接合方法への適用を想定している。   This joining method is also assumed to be applied to a joining method of a floor panel of a vehicle body and a side sill inner panel as described in claim 6.

したがって、請求項１，５に記載の接合構造では、他方のパネルに予め形成した穴を通してレーザ溶接を施すことにより、仮にその他方のパネルの板厚が大きくても、双方のパネル同士を一方のパネルの端部に曲折形成したフランジ部の基部近傍で確実に溶接することが可能となる。   Therefore, in the joining structure according to claims 1 and 5, by performing laser welding through a hole formed in the other panel in advance, even if the thickness of the other panel is large, both panels are connected to each other. It becomes possible to reliably weld in the vicinity of the base portion of the flange portion bent at the end portion of the panel.

請求項１に記載の発明によれば、一方のパネルの端部に曲折形成したフランジ部の基部近傍をもって双方のパネル同士を溶接することができるため、パネル同士の接合強度が向上する。特に上記のレーザ溶接による継手形態は、フレア継手に近い継手形態となるため、例えば自動車の車体のフロアパネルとサイドシルインナパネルとの接合に適用した場合に、剥離方向の外力に対して十分に対向することができ、その結果として接合強度が向上する。   According to invention of Claim 1, since both panels can be welded in the base part vicinity of the flange part bent at the edge part of one panel, the joint strength of panels improves. In particular, the above-mentioned joint form by laser welding is a joint form close to a flare joint. Therefore, for example, when applied to the joining of a floor panel of a car body and a side sill inner panel, it is sufficiently opposed to external force in the peeling direction. As a result, the bonding strength is improved.

図１以下の図面は本発明のより具体的な実施の形態を示しており、特に図１は自動車のフロントフロアの概略構成を、図２は図１の要部拡大図を、図３は図２のＡ−Ａ線に沿う断面図をそれぞれ示している。   1 and the following drawings show a more specific embodiment of the present invention. In particular, FIG. 1 is a schematic configuration of a front floor of an automobile, FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG. Sectional drawing which follows the AA line of 2 is shown, respectively.

図１，２に示すように、自動車のフロントフロア１の主要素としてトンネル部２ａを有するフロアパネル２の両側には上向きにフランジ部２ｂが曲折形成してあり、フロアパネル２はそのフランジ部２ｂを接合部としてそれよりも板厚が大きいサイドシル３のインナパネル（以下、サイドシルインナパネルという）４と溶接接合してある。なお、サイドシルインナパネル４は図２のように例えば略ハット型断面形状をなしていて、周知のように図示外のサイドシルアウタパネルあるいはレインフォースとともに閉断面構造のサイドシル３を形成して、車体下部の左右において車体骨格部材もしくは強度部材として機能することになる。   As shown in FIGS. 1 and 2, a flange portion 2b is bent upward on both sides of a floor panel 2 having a tunnel portion 2a as a main element of a front floor 1 of an automobile, and the floor panel 2 has a flange portion 2b. Is joined to an inner panel 4 of the side sill 3 (hereinafter referred to as a side sill inner panel) 4 having a larger thickness than that of the joint. As shown in FIG. 2, the side sill inner panel 4 has, for example, a substantially hat-shaped cross-sectional shape. It functions as a vehicle body skeleton member or a strength member on the left and right.

フロアパネル２とサイドシルインナパネル４は、図２，３に示すように、フランジ部２ｂの高さ方向中央部であって且つその長手方向に所定のピッチで設定された多数の打点位置５，５…でのスポット溶接をもって溶接接合してあるとともに、スポット溶接による打点位置５，５‥よりも下方位置であって且つ打点位置５，５‥相互間のピッチの中間位置に設定された多数の穴６，６‥でのレーザ溶接をもって溶接接合してある。   As shown in FIGS. 2 and 3, the floor panel 2 and the side sill inner panel 4 are a plurality of hitting positions 5 and 5 set at a predetermined pitch in the longitudinal direction at the center in the height direction of the flange portion 2 b. A number of holes that are welded and joined by spot welding at ... and are positioned below the spot positions 5, 5 ... by spot welding and at intermediate positions between the spot positions 5, 5 ... It is welded by laser welding with 6, 6.

より詳しくは、図３，４にも示すように、フロアパネル２側のフランジ部２ｂとサイドシルインナパネル４との溶接接合部において、スポット溶接による打点位置５，５‥よりも下方側であって且つフランジ部２ｂの基部近傍（フランジ部２ｂの根元部の直近位置）にはその長手方向に沿って等ピッチで長穴状の多数の穴６，６‥を予め形成してある。そして、各穴６，６‥は板厚方向に貫通しており、各穴６，６‥の位置において、フランジ部２ｂの縦壁面と穴６，６‥の内周面とのなす内隅部にレーザ溶接による溶接ビード７を形成することで、実質的に先に述べたスポット溶接とレーザ溶接とを併用するかたちでの継手形態をもってフロアパネル２とサイドシルインナパネル４とを溶接接合してある。   More specifically, as shown in FIGS. 3 and 4, in the welded joint portion between the flange portion 2 b on the floor panel 2 side and the side sill inner panel 4, it is below the spot positions 5, 5. In the vicinity of the base portion of the flange portion 2b (a position closest to the base portion of the flange portion 2b), a large number of elongated holes 6, 6... Are formed in advance along the longitudinal direction at an equal pitch. Each of the holes 6, 6... Penetrates in the plate thickness direction, and the inner corner portion formed by the vertical wall surface of the flange portion 2 b and the inner peripheral surface of the holes 6, 6. By forming the weld bead 7 by laser welding on the floor panel 2, the floor panel 2 and the side sill inner panel 4 are welded to each other in a joint form in which spot welding and laser welding are used in combination. .

ここで、このような継手形態をもってフロアパネル２とサイドシルインナパネル４とを溶接接合する際には、図６に示すように、フロアパネル２側のフランジ部２ｂと、予め多数の穴６，６‥を形成してあるサイドシルインナパネル４との相対位置決めを行いながら両者を突き合わせて実質的に重合させ、その状態でスポット溶接ガン８にて公知の方法により各打点位置５，５‥についてスポット溶接を施す。   Here, when the floor panel 2 and the side sill inner panel 4 are welded and joined in such a joint form, as shown in FIG. 6, the flange portion 2b on the floor panel 2 side and a large number of holes 6, 6 in advance. Are aligned with each other while being relatively positioned with the side sill inner panel 4 formed with..., And in this state, spot welding is performed at each spot position 5, 5. Apply.

そして、スポット溶接に続いて、図３〜５に示すように、一対のローラ９，９を有する押し当て治具１０を用いてスポット溶接済みのフランジ部２ｂとサイドシルインナパネル４とを密着させながら、特に穴６，６‥の両側を確実に密着させた状態でフランジ部３の縦壁面と穴６，６‥の内周面とのなす内隅部にレーザ加工ヘッド１１からレーザビームＬｂを照射してレーザ溶接を施して溶接ビード７を形成する。このようなレーザ溶接動作は、サイドシルインナパネル４の長手方向に沿って押し当て治具１０をレーザ加工ヘッド１１とともに移動させながら、各穴６，６‥について連続して行うものとする。このようにスポット溶接とレーザ溶接を併用することにより、図２に示すようなフロアパネル２とサイドシルインナパネル４との溶接継手構造が得られることになる。   Then, following spot welding, as shown in FIGS. 3 to 5, the spot-welded flange portion 2 b and the side sill inner panel 4 are brought into close contact with each other using a pressing jig 10 having a pair of rollers 9 and 9. In particular, the laser beam Lb is irradiated from the laser processing head 11 to the inner corner formed by the vertical wall surface of the flange portion 3 and the inner peripheral surface of the holes 6, 6. Then, laser welding is performed to form a weld bead 7. Such a laser welding operation is continuously performed for each of the holes 6, 6, while moving the pressing jig 10 together with the laser processing head 11 along the longitudinal direction of the side sill inner panel 4. Thus, by using spot welding and laser welding together, a welded joint structure of the floor panel 2 and the side sill inner panel 4 as shown in FIG. 2 is obtained.

したがって、上記溶接接合構造によれば、各打点位置５，５‥でのスポット溶接と併用するかたちで、フランジ部２ｂの基部近傍での各穴６，６‥においてレーザ溶接を施しているため、フロアパネル２とサイドシルインナパネル４の溶接接合強度が飛躍的に向上することになる。   Therefore, according to the above welded joint structure, laser welding is applied to each of the holes 6, 6... In the vicinity of the base portion of the flange portion 2b in combination with spot welding at each spot position 5, 5,. The weld joint strength between the floor panel 2 and the side sill inner panel 4 is greatly improved.

特に、各打点位置５，５‥でのスポット溶接のみでレーザ溶接を併用しない従来の接合構造の場合、各打点位置５，５‥はフロアパネル２の一般面よりも高い位置にあって、両者の間にいわゆるオフセットを生じている。そのため、例えば車両走行時にねじり等が発生した場合には、フロアパネル２側のフランジ部２ｂとサイドシルインナパネル４との接合部に剥離方向の力が加わり、フランジ部２ｂの基部がサイドシルインナパネル４から離間してしまうような局部変形が発生する可能性がある。また、車両の前面衝突時には、フロアパネル２とサイドシル３（図１参照）とが互いに前後方向でずれるような力が働くことになるが、先に述べたオフセットのために、上記と同様にフランジ部２ｂとサイドシルインナパネル４との接合部に剥離方向の力が加わり、フランジ部２ｂの基部がサイドシルインナパネル４から離間してしまうような局部変形が発生する可能性がある。   In particular, in the case of a conventional joining structure in which only spot welding is performed at each spot position 5, 5... And laser welding is not used, each spot position 5, 5,. There is a so-called offset between the two. Therefore, for example, when torsion or the like occurs when the vehicle travels, a force in the peeling direction is applied to the joint portion between the flange portion 2b on the floor panel 2 side and the side sill inner panel 4, and the base portion of the flange portion 2b becomes the side sill inner panel 4 There is a possibility that local deformation that would be separated from Further, at the time of a frontal collision of the vehicle, a force that causes the floor panel 2 and the side sill 3 (see FIG. 1) to deviate from each other in the front-rear direction is exerted. A force in the peeling direction is applied to the joint portion between the portion 2b and the side sill inner panel 4, and local deformation may occur such that the base portion of the flange portion 2b is separated from the side sill inner panel 4.

これに対して本実施の形態の溶接接合構造によれば、各打点位置５，５‥でのスポット溶接に加えて、フランジ部２ｂの基部近傍でのレーザ溶接による溶接ビード７をもってフロアパネル２とサイドシルインナパネル４とが溶接接合されているため、実質的にフランジ部２ｂの基部近傍がオフセットのない状態でサイドシルインナパネル４と直接接合されていることになる。したがって、その接合強度および剥離強度が飛躍的に高いものとなり、先に述べたような溶接接合部での剥離方向の力が加わったとしてもフロアパネル２の局変形を未然に防止できることになる。   On the other hand, according to the welded joint structure of the present embodiment, in addition to spot welding at the respective spot positions 5, 5,..., The floor panel 2 and the welded bead 7 by laser welding near the base portion of the flange portion 2b are provided. Since the side sill inner panel 4 is welded and joined, the vicinity of the base portion of the flange portion 2b is directly joined to the side sill inner panel 4 with no offset. Therefore, the joint strength and peel strength are remarkably high, and even if the force in the peel direction at the weld joint as described above is applied, local deformation of the floor panel 2 can be prevented beforehand.

ここで、上記の実施の形態ではフロアパネル２から上向きにフランジ部２ｂを曲折形成した場合について例示しているが、フランジ部２ｂを下向きに曲折形成した場合でも同様の効果が得られる。   Here, in the above embodiment, the case where the flange portion 2b is bent upward from the floor panel 2 is illustrated, but the same effect can be obtained even when the flange portion 2b is bent downward.

自動車のフロントフロアの概略構成を示す要部斜視図。The principal part perspective view which shows schematic structure of the front floor of a motor vehicle. 本発明のより具体的な実施の形態を示す図で、図１の要部拡大図に相当する斜視図。FIG. 3 is a diagram showing a more specific embodiment of the present invention, and a perspective view corresponding to an enlarged view of a main part of FIG. 1. 図２のＡ−Ａ線に沿う拡大断面図。The expanded sectional view which follows the AA line of FIG. 図３のＢ−Ｂ線に沿う断面図。Sectional drawing which follows the BB line of FIG. 図３の斜視図。FIG. 4 is a perspective view of FIG. 3. 図３〜５のレーザ溶接に先立って行われるスポット溶接時の説明図。Explanatory drawing at the time of spot welding performed prior to the laser welding of FIGS.

符号の説明Explanation of symbols

２…フロアパネル（一方のパネル）
２ｂ…フランジ部
３…サイドシル
４…サイドシルインナパネル（他方のパネル）
５…スポット溶接の打点位置
６…穴
７…溶接ビード
１０…押し当て治具
１１…レーザ加工ヘッド
Ｌｂ…レーザビーム 2… Floor panel (one panel)
2b ... Flange 3 ... Side sill 4 ... Side sill inner panel (the other panel)
5 ... Spot welding spot position 6 ... Hole 7 ... Weld bead 10 ... Pushing jig 11 ... Laser processing head Lb ... Laser beam

Claims (6)

一方のパネルの端部に曲折形成したフランジ部を他方のパネルと重合させ、そのフランジ部を接合面として双方のパネル同士を溶接接合した構造であって、
他方のパネルのうち上記フランジ部の基部近傍と重合する位置に穴を形成し、
上記フランジ部と穴の内周面とのなす内隅部にレーザ溶接を施して溶接接合したことを特徴とするパネルの接合構造。 It is a structure in which the flange part bent at the end of one panel is superposed with the other panel, and both panels are welded together with the flange part as a joining surface,
A hole is formed at a position where it overlaps with the vicinity of the base of the flange portion of the other panel,
A panel joining structure, wherein laser welding is applied to an inner corner portion formed by the flange portion and the inner peripheral surface of the hole to perform welding joining. 一方のパネルより他方のパネルの方がその板厚が大きく設定されているとともに、
上記フランジ部の高さ方向中央部をスポット溶接にて他方のパネルと溶接接合してあることを特徴とする請求項１に記載のパネルの接合構造。 The thickness of the other panel is set larger than the other panel,
2. The panel joining structure according to claim 1, wherein a central portion in the height direction of the flange portion is welded to the other panel by spot welding. 一方のパネルが自動車の車体のフロアパネルであるととともに、他方のパネルがサイドシルインナパネルであることを特徴とする請求項２に記載のパネルの接合構造。   3. The panel joining structure according to claim 2, wherein one panel is a floor panel of an automobile body and the other panel is a side sill inner panel. 上記サイドシルインナパネルの長手方向に沿って複数の穴が所定のピッチで形成されていることを特徴とする請求項３に記載のパネルの接合構造。   The panel joining structure according to claim 3, wherein a plurality of holes are formed at a predetermined pitch along a longitudinal direction of the side sill inner panel. 一方のパネルの端部に曲折形成したフランジ部を他方のパネルと重合させ、そのフランジ部を接合面として双方のパネル同士を溶接接合する方法であって、
他方のパネルのうち上記フランジ部の基部近傍と重合する位置に予め穴を形成しておき、
上記穴が形成されていない位置で且つフランジ部の高さ方向中央部をスポット溶接にて他方のパネルと溶接接合した上で、
上記フランジ部と穴の内周面とのなす内隅部に対し他方のパネル側からレーザビームを照射してレーザ溶接を施すことを特徴とするパネルの接合方法。 It is a method in which the flange portion formed bent at the end portion of one panel is polymerized with the other panel, and both the panels are welded together with the flange portion as a joining surface,
In the other panel, a hole is formed in advance at a position overlapping with the vicinity of the base of the flange portion,
After welding and joining the other panel with spot welding at the center in the height direction of the flange at the position where the hole is not formed,
A method for joining panels, characterized in that laser welding is performed by irradiating a laser beam from the other panel side to an inner corner formed by the flange portion and the inner peripheral surface of the hole. 一方のパネルが自動車の車体のフロアパネルであるととともに、他方のパネルがフロアパネルよりも板厚の大きなサイドシルインナパネルであることを特徴とする請求項５に記載のパネルの接合方法。   6. The panel joining method according to claim 5, wherein one panel is a floor panel of an automobile body, and the other panel is a side sill inner panel having a larger thickness than the floor panel.
JP2004169397A 2004-06-08 2004-06-08 Panel joining structure and joining method Pending JP2005349398A (en)

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JP2015003552A (en) * 2013-06-19 2015-01-08 新日鐵住金株式会社 Lap weld member of high strength steel sheet, and manufacturing method thereof
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CN104024093B (en) * 2011-12-28 2016-05-11 丰田自动车株式会社 Panel connected structure and panel joint method
JP2015003552A (en) * 2013-06-19 2015-01-08 新日鐵住金株式会社 Lap weld member of high strength steel sheet, and manufacturing method thereof
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