JP6144919B2

JP6144919B2 - Overlap welded structure

Info

Publication number: JP6144919B2
Application number: JP2013011056A
Authority: JP
Inventors: 正志安藤; 忍仲本
Original assignee: Hiruta Kogyo Co Ltd
Current assignee: Hiruta Kogyo Co Ltd
Priority date: 2013-01-24
Filing date: 2013-01-24
Publication date: 2017-06-07
Anticipated expiration: 2033-01-24
Also published as: JP2014140873A

Description

本発明は、一方の板材に他方の板材を接面させ、前記一方の板材に形成された接合縁部を他方の板材の表面に溶接して接合する重ね合わせ溶接構造に関する。 The present invention relates to a lap welding structure in which one plate member is brought into contact with the other plate member, and a joining edge formed on the one plate member is welded to the surface of the other plate member.

一方の板材に他方の板材を接面させ、前記一方の板材に形成された接合縁部を他方の板材の表面に溶接して接合する場合、一方の板材に十分な厚さがあれば、例えば特許文献１に見られるように、一方の板材の端面と他方の板材の平面との間で断面三角形の溶接ビードを有する隅肉溶接が利用される（特許文献１・［図１］［図２］［図４］参照）。溶接は、アーク溶接やレーザー溶接のほか、TIG溶接、MIG溶接等、従来公知の各種溶接が利用される。 When one plate member is brought into contact with the other plate member and the joining edge portion formed on the one plate member is welded to the surface of the other plate member and joined, if one plate member has a sufficient thickness, for example, As seen in Patent Document 1, fillet welding having a weld bead having a triangular cross section between the end surface of one plate and the plane of the other plate is used (Patent Document 1 [FIG. 1] [FIG. 2]. ] [See FIG. 4]). For welding, in addition to arc welding and laser welding, various conventionally known welding methods such as TIG welding and MIG welding are used.

特開2002-018583号公報Japanese Patent Laid-Open No. 2002-018583

一方の板材に他方の板材を接面させ、前記一方の板材に形成された接合縁部を他方の板材の表面に溶接して接合する場合、一方の板材が薄くなると、溶接ビードが前記一方の板材の端面に留まることができず、一方の板材の表面にはみ出す重ね合わせ溶接構造が利用される。重ね合わせ溶接構造は、溶接ビードが接合縁部を覆ってしまうため、前記接合縁部に対する溶接ビードの位置が確認しにくい。このため、直線部分を曲線部分又は屈曲部分で挟んだ凹部位又は凸部位の接合縁部を重ね合わせて溶接する場合、直線部分より短い溶接ビードに留め、前記溶接ビードを挟んで覗く直線部分の両端を結ぶ比較直線との対比により、接合縁部の直線部分に対する溶接ビードの位置を確認する。 When one plate member is brought into contact with the other plate member, and the joining edge formed on the one plate member is welded to the surface of the other plate member, and the one plate member becomes thin, the weld bead An overlap welding structure that cannot stay on the end face of the plate material and protrudes to the surface of one plate material is used. In the overlap welding structure , since the weld bead covers the joint edge, it is difficult to confirm the position of the weld bead with respect to the joint edge. Therefore, when welding by superposing the joint edge of the recess-position or the protrusion across the straight portion at the curved portion or the bent portion, fastened to the shorter weld bead from the linear portion, the linear portion looking into across the weld bead The position of the weld bead relative to the straight portion of the joint edge is confirmed by comparison with a comparison straight line connecting both ends.

しかし、上述のように、接合縁部の直線部分と溶接ビードとを対比するため、直線部分より短い溶接ビードに留めると、当然、それだけ接合強度が弱くなる。また、溶接ビードの始端部分及び終端部分は、溶接ビードの中間部分に比べて接合強度が低いため、直線部分より短い溶接ビードの接合強度は限定的になる。そこで、直線部分を曲線部分又は屈曲部分で挟んだ凹部位又は凸部位の接合縁部の重ね合わせ溶接構造において、接合強度を高めるため、直線部分を超える長さの溶接ビードとしながら、接合縁部の直線部分に対する溶接ビードの位置を容易に確認できるように、検討した。 However, as described above, since the straight portion of the joint edge is compared with the weld bead, if the weld bead is shorter than the straight portion, the joint strength is naturally reduced accordingly. Moreover, since the joint strength of the start end part and the terminal part of the weld bead is lower than that of the intermediate part of the weld bead, the joint strength of the weld bead shorter than the straight part is limited. Therefore, in the overlap welding structure of the concave portion or the convex joint portion with the straight portion sandwiched between the curved portion or the bent portion, in order to increase the joint strength, the joint edge portion has a length exceeding the straight portion. In order to easily confirm the position of the weld bead with respect to the straight portion, the study was conducted.

検討の結果開発したものが、一方の板材に他方の板材を接面させ、前記一方の板材に形成された接合縁部を他方の板材の表面に溶接して接合する重ね合わせ溶接構造であって、一方の板材は、直線部分を曲線部分又は屈曲部分で挟んだ凹部位の接合縁部を形成し、接合縁部の直線部分の両端それぞれの延長線上に一対の確認マークを設けてなり、前記直線部分の両端を超えて形成された直線状の溶接ビードと、前記溶接ビードに潰されない一対の確認マークを結ぶ比較直線との対比により、接合縁部の直線部分を均等に跨ぐ溶接ビードが形成されているか否かを容易に判別できる重ね合わせ溶接構造である。 What has been developed as a result of the study is a lap weld structure in which one plate is brought into contact with the other plate and the joining edge formed on the one plate is welded to the surface of the other plate. , one sheet material forms the joint edge of the recess positions sandwiching the straight portion at the curved portion or the bent portion, it is provided with a pair of check marks on opposite ends of the extension of the linear portion of the connection edge, the a linear weld bead formed beyond the ends of the linear portion, in comparison with Comparative straight line connecting the pair of check marks are not crushed to the weld bead, the weld bead uniformly cross the straight portion of the joint edge portion is formed it is a welded structure that overlay can easily determine whether it is.

また、一方の板材に他方の板材を接面させ、前記一方の板材に形成された接合縁部を他方の板材の表面に溶接して接合する重ね合わせ溶接構造であって、一方の板材は、直線部分を曲線部分又は屈曲部分で挟んだ凸部位の接合縁部を形成し、他方の板材は、前記接合縁部の直線部分の両端それぞれの延長線上に当たる部位に一対の確認マークを設けてなり、前記直線部分の両端を超えて形成された直線状の溶接ビードと、前記溶接ビードに潰されない一対の確認マークを結ぶ比較直線との対比により、接合縁部の直線部分を均等に跨ぐ溶接ビードが形成されているか否かを容易に判別できる重ね合わせ溶接構造を開発した。 In addition, it is an overlap welding structure in which the other plate material is brought into contact with one plate material, and the joining edge formed on the one plate material is welded to the surface of the other plate material, and the one plate material is forming a connection edge of the protrusion across the straight portion at the curved portion or the bent portion, the other plate member is made provided with a pair of check mark in a portion falling on the opposite ends of the extension of the linear portion of the joint edge portion , a linear weld bead formed beyond the ends of said straight portion, in comparison with Comparative straight line connecting the pair of check marks are not crushed to the weld bead, the weld bead across equally straight portion of the joint edge portion There was whether formed developed easily Undetermined that lap welding structure.

「直線部分を曲線部分又は屈曲部分で挟んだ凹部位」である接合縁部は、一方の板材の外周縁から一部凹んだ部位や、両端の円弧を直線で結んだ開口の内周縁である。「直線部分を曲線部分又は屈曲部分で挟んだ凸部位」である接合縁部は、一方の板材の外周縁から一部突出した部位である。「確認マーク」は、一対となって比較直線を特定できる目印であれば足り、一方の板材又は他方の板材の表面に設けられる凹部又は凸部、貫通孔やレーザーによる記号等がある。「比較直線」は、一対の確認マークを結ぶ仮想的な直線を意味し、確認作業者が仮想的に認識するほか、スリット光やレーザー光線を照射して認識できる直線や、外観上問題がなければ実際に一対の確認マークを結んで描画する実線でもよい。 The joint edge part, which is “the concave part where the straight part is sandwiched between the curved part or the bent part”, is a part that is partially recessed from the outer peripheral edge of one plate material or the inner peripheral edge of the opening that connects the arcs at both ends with straight lines . The joint edge portion, which is “a convex portion sandwiching the straight portion between the curved portion or the bent portion”, is a portion that partially protrudes from the outer peripheral edge of one plate member. The “confirmation marks” need only be marks that can identify a comparison straight line as a pair, and include a concave portion or a convex portion provided on the surface of one plate material or the other plate material, a through hole, a symbol by a laser, or the like. “Comparison line” means a virtual straight line that connects a pair of confirmation marks. In addition to being virtually recognized by the confirmation operator, there is no straight line that can be recognized by irradiating slit light or laser light, or if there is no problem in appearance. It may be a solid line drawn by actually connecting a pair of confirmation marks.

本発明により、直線部分を曲線部分又は屈曲部分で挟んだ凹部位又は凸部位の接合縁部を重ね合わせて溶接する場合、直線部分より長い溶接ビードを形成できる上、接合強度の劣る溶接ビードの始端部分及び終端部分を前記接合縁部の直線部分から遠ざけることができるようになり、従来に比べて接合強度の高い重ね合わせ溶接構造が実現できるほか、接合縁部の直線部分に対する溶接ビードの位置を容易に確認して、接合縁部の直線部分を均等に跨ぐ溶接ビードが形成されているか否かを容易に判別できるようになる。 The present invention, when welding by superposing the joint edge of the recess-position or the protrusion across the straight portion at the curved portion or the bent portion, on which can form a long welding bead than the linear portion, the weld bead inferior bonding strength The start end portion and the end portion can be moved away from the straight portion of the joint edge, and an overlap weld structure having a higher joint strength than that of the prior art can be realized, and the position of the weld bead with respect to the straight portion of the joint edge. It is possible to easily determine whether or not a weld bead that evenly extends over the straight portion of the joint edge is formed.

本発明の重ね合わせ溶接構造を適用した板材の一例を示す平面図である。It is a top view which shows an example of the board | plate material to which the overlap welding structure of this invention is applied . 本例の板材を重ね合わせる前の状態を示す斜視図である。It is a perspective view which shows the state before superimposing the board | plate material of this example. 本例の板材を重ね合わせた後の状態を示す斜視図である。It is a perspective view which shows the state after overlapping the board | plate material of this example. 本例の板材を重ね合わせて溶接した状態を示す斜視図である。It is a perspective view showing a state of welding superimposed plate members of the present embodiment.

以下、本発明を実施するための形態について図を参照しながら説明する。本発明の重ね合わせ溶接構造は、例えば図１に見られるように、一方の板材１に他方の板材２を接面させ、前記一方の板材１に形成された接合縁部12,14を他方の板材２の表面に溶接して接合する場合に利用される。本発明は、接合する部材相互が接面する部分で、一方の部材の接合縁部を他方の部材の平面に溶接する場合であれば、部材が板材でなくても適用できる。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. For example, as shown in FIG. 1, the lap welding structure of the present invention has one plate member 1 brought into contact with the other plate member 2, and the joining edges 12, 14 formed on the one plate member 1 are connected to the other plate member 1. It is used when welding and joining to the surface of the plate 2. The present invention can be applied even if the member is not a plate material, as long as the members to be joined are in contact with each other and the joining edge of one member is welded to the plane of the other member.

本例の一方の板材１は、両端の円弧を直線で結んだ開口11の内周縁である接合縁部12,12と、直線状の外周縁から一部突出して形成される接合縁部14とを有する。接合縁部12は、前記開口11両端の円弧を半割した曲線部分122,122で直線部分121を挟んだ凹部位であり、開口11に一対形成される。接合縁部12に対する確認マーク13,13は、直線部分121の両端それぞれの延長線上に一対設けられる。確認マーク13は、一方の板材１の表面に形成された平面視正三角形の凹部で、角部を相手方に対向させている。 One plate member 1 of this example includes joint edges 12 and 12 which are inner peripheral edges of an opening 11 in which arcs at both ends are connected by straight lines, and joint edge parts 14 which are formed by partially protruding from a linear outer peripheral edge. Have The joining edge portion 12 is a concave portion in which the straight portion 121 is sandwiched between curved portions 122 and 122 obtained by halving the arcs at both ends of the opening 11, and a pair is formed in the opening 11. A pair of confirmation marks 13 and 13 for the joint edge portion 12 is provided on the extended lines at both ends of the straight line portion 121. The confirmation mark 13 is a concave part of a regular triangle in plan view formed on the surface of one plate member 1, and the corner part is opposed to the other party.

接合縁部14は、直線状の外周縁から一部突出した凸部位であり、１/４円弧の曲線部分142,142で前記外周縁と平行な直線部分141を挟んで形成されている。接合縁部14に対する確認マーク21,21は、直線部分141の両端それぞれの延長線上に他方の板材２の表面がないことから、一方の板材１を他方の板材２に接面した際、直線部分141の両端それぞれの延長線上に当たる他方の板材２の部位に一対設けられる。確認マーク21は、上述の確認マーク13同様、他方の板材２の表面に形成された平面視正三角形の凹部で、角部を相手方に対向させている。 The joining edge portion 14 is a convex portion that partially protrudes from a linear outer peripheral edge, and is formed by sandwiching a linear portion 141 parallel to the outer peripheral edge with curved portions 142, 142 of 1/4 arc. The confirmation marks 21 and 21 with respect to the joining edge portion 14 are not provided on the extended lines at both ends of the straight portion 141, so that the surface of the other plate member 2 does not exist, so that when the one plate member 1 contacts the other plate member 2, the straight portion A pair is provided at a portion of the other plate member 2 that hits the extended lines of both ends of 141. Like the above-described confirmation mark 13, the confirmation mark 21 is a concave part of a regular triangle in plan view formed on the surface of the other plate member 2, and the corner is opposed to the other party.

接合縁部12の溶接により形成される直線状の溶接ビード３は、直線部分121を完全に覆って、前記直線部分121を挟む曲線部分122,122を超えて形成され、接合強度の劣る溶接ビード３の始端部分31及び終端部分32を、前記直線部分121の端部（正確には直線部分121の両端から続く曲線部分122の一部）から離れた一方の板材１の表面上に形成させる。一方の板材１の表面上に形成される溶接ビード３の始端部分31及び終端部分32は、板材１,２相互の接合に無関係な部分であり、確認マーク13を潰さない限り、直線部分121の端部からどれだけ離れていても構わない。 The straight weld bead 3 formed by welding the joint edge 12 is formed so as to completely cover the straight part 121 and beyond the curved parts 122, 122 sandwiching the straight part 121, and has a poor joint strength. The start end portion 31 and the end end portion 32 are formed on the surface of one plate member 1 away from the end portion of the straight line portion 121 (more precisely, a part of the curved portion 122 continuing from both ends of the straight line portion 121). The starting end portion 31 and the terminal end portion 32 of the weld bead 3 formed on the surface of one plate member 1 are portions irrelevant to the mutual bonding of the plate members 1 and 2, and unless the confirmation mark 13 is crushed, the straight portion 121. It doesn't matter how far away from the edge.

一方の板材１の表面上に始端部分31及び終端部分32が達するほど長い溶接ビード３を形成すれば、接合縁部12の直線部分121の全部と、前記直線部分121の端部に続く曲線部分122の一部とが、板材１,２相互の接合に寄与することになり、前記直線部分141の一部が溶接されていた従来に比べて、接合強度が高められる。本例の接合縁部12は、両端が円弧の開口11に形成されているため、本例のように長い溶接ビード３を形成できれば、開口11の内周縁の半分以上を溶接できるようになり、これも接合強度の向上に寄与している。 If the weld bead 3 that is long enough to reach the start end portion 31 and the end end portion 32 is formed on the surface of one plate member 1, the entire straight portion 121 of the joining edge portion 12 and the curved portion following the end portion of the straight portion 121 are formed. A part of 122 contributes to the mutual joining of the plate members 1 and 2, and the joining strength is increased as compared with the conventional case where a part of the straight part 141 is welded. Since the joint edge portion 12 of this example is formed in the circular arc opening 11, both ends of the inner periphery of the opening 11 can be welded if the long weld bead 3 can be formed as in this example. This also contributes to the improvement of bonding strength.

一方の板材１の表面上に形成される溶接ビード３は、一対の確認マーク13,13を結ぶ比較直線131を挟んで線対称に形成されているか否かを見ることにより、接合縁部12の直線部分121に沿って正しく溶接されているかを判断する。本例の場合、図１中左側の溶接ビード３は、比較直線131を中心に左右対称に形成されており、接合縁部12の直線部分121に沿って正しく溶接されていることが分かる。これに対し、図１中右側の溶接ビード３は、比較直線131に対して右方向にずれて形成されており、接合縁部12の直線部分121に沿って正しく溶接されていないことが分かる。 By checking whether the weld bead 3 formed on the surface of one plate 1 is symmetrical with respect to the comparison straight line 131 connecting the pair of confirmation marks 13, 13, It is determined whether the welding is correctly performed along the straight line portion 121. In the case of this example, the welding bead 3 on the left side in FIG. 1 is formed symmetrically with respect to the comparison straight line 131, and it can be seen that the welding bead 3 is correctly welded along the straight line portion 121 of the joining edge portion 12. On the other hand, the weld bead 3 on the right side in FIG. 1 is formed to be shifted to the right with respect to the comparison straight line 131, and it can be seen that the weld bead 3 is not properly welded along the straight line portion 121 of the joint edge portion 12.

同様に、接合縁部14の溶接により形成される直線状の溶接ビード３は、直線部分141を挟む曲線部分142,142を超えて形成され、接合強度の劣る溶接ビード３の始端部分31及び終端部分32を、前記直線部分141の端部（正確には直線部分141の両端から続く曲線部分142の一部）から離れた他方の板材２の表面上に形成させる。他方の板材２の表面上に形成される溶接ビード３の始端部分31及び終端部分32は、板材１,２相互の接合に無関係な部分であり、確認マーク21を潰さない限り、直線部分141の端部からどれだけ離れていても構わない。 Similarly, the linear weld bead 3 formed by welding the joining edge portion 14 is formed beyond the curved portions 142 and 142 sandwiching the straight portion 141, and the start end portion 31 and the end portion 32 of the weld bead 3 having poor joint strength. Is formed on the surface of the other plate member 2 away from the end of the straight portion 141 (more precisely, a part of the curved portion 142 continuing from both ends of the straight portion 141). The start end portion 31 and the end end portion 32 of the weld bead 3 formed on the surface of the other plate member 2 are portions irrelevant to the mutual bonding of the plate members 1 and 2, and unless the confirmation mark 21 is crushed, It doesn't matter how far away from the edge.

他方の板材２の表面上に始端部分31及び終端部分32が達するほど長い溶接ビード３を形成すれば、接合縁部14の直線部分141の全部と、前記直線部分141の端部に続く曲線部分142の一部とが、板材１,２相互の接合に寄与することになり、前記直線部分141の一部が溶接されていた従来に比べて、接合強度が高められる。更に、一方の板材１の一部である接合縁部14からはみ出した始端部分31及び終端部分32が他方の板材２に接合しており、接合縁部14における板材１,２相互の接合強度が高められている。 If the weld bead 3 that is long enough to reach the start end portion 31 and the end end portion 32 is formed on the surface of the other plate member 2, the entire straight portion 141 of the joint edge portion 14 and the curved portion following the end portion of the straight portion 141 A part of 142 contributes to the mutual joining of the plate members 1 and 2, and the joining strength is increased as compared with the conventional case where a part of the linear part 141 is welded. Furthermore, the starting end portion 31 and the terminal end portion 32 that protrude from the joining edge 14 that is a part of one plate 1 are joined to the other plate 2, and the joining strength between the plates 1 and 2 at the joining edge 14 is high. Has been enhanced.

他方の板材２の表面上に形成される溶接ビード３は、一対の確認マーク21,21を結ぶ比較直線211を挟んで線対称に形成されているか否かを見ることにより、接合縁部14の直線部分141に沿って正しく溶接されているかを判断する。本例の場合、他方の板材２の表面上に形成される溶接ビード３は、比較直線211を中心に左右対称に形成されており、接合縁部14の直線部分141に沿って正しく溶接されていることが分かる。 By checking whether or not the weld bead 3 formed on the surface of the other plate member 2 is formed symmetrically with respect to the comparison straight line 211 that connects the pair of confirmation marks 21 and 21, It is determined whether the welding is correctly performed along the straight line portion 141. In the case of this example, the weld bead 3 formed on the surface of the other plate member 2 is formed symmetrically about the comparison straight line 211 and is correctly welded along the straight line portion 141 of the joint edge 14. I understand that.

本例は、3本の溶接ビード３がすべて平行かつ同じ長さで図示されている。しかし、直線部分121,141の延長線上に確認マーク13,21を設け、前記確認マーク13,21を結ぶ比較直線131,211と溶接ビード３とを比較できればよいため、接合縁部12,14それぞれが交差していても、長さが異なってもよい。また、直線部分があれば、例えば曲線部分を挟んで屈曲関係にある一対の直線部分を有する接合縁部にも、本発明を適用できる。 In this example, all three weld beads 3 are illustrated in parallel and the same length. However, since the confirmation marks 13 and 21 are provided on the extended lines of the straight portions 121 and 141, and the comparison straight lines 131 and 211 connecting the confirmation marks 13 and 21 can be compared with the weld bead 3, the joining edge portions 12 and 14 intersect each other. Or the length may be different. In addition, if there is a straight line portion, the present invention can be applied to, for example, a joining edge portion having a pair of straight line portions that are in a bending relationship with a curved portion interposed therebetween.

本発明による重ね合わせ溶接構造は、板材１,２相互を重ね合わせる前、図２に見られるように、予め確認マーク13を板材１に設けておく。確認マーク13は、一対となって比較直線131を特定できる目印であり、例えば開口11をプレス成形により設ける際、同時にプレス成形により形成する。本例の確認マーク13は、プレス成形により形成するために凹部としているが、加工可能であれば凸部であってもよいし、板材１,２相互を接合して構成される製品の強度に問題がなければ、貫通孔であってもよい。 In the lap welding structure according to the present invention, the confirmation marks 13 are provided in advance on the plate 1 as shown in FIG. The confirmation marks 13 are marks that can identify the comparison straight line 131 as a pair. For example, when the opening 11 is provided by press molding, it is formed by press molding at the same time. Although the confirmation mark 13 in this example is a concave portion for forming by press molding, it may be a convex portion as long as it can be processed, or the strength of the product formed by joining the plate materials 1 and 2 together. If there is no problem, it may be a through hole.

他方の板材２も、上記同様、プレス成形に際して同時に凹部からなる確認マーク21を形成する。ここで、他方の板材２が前加工を要しない場合、確認マーク21は、別途プレス成形により形成したり、レーザーによる刻印したりして形成する。確認マーク21,21を結ぶ比較直線211は、接合縁部14の直線部分141に中点を一致させておくと、他方の板材２に一方の板材１を重ねる際の位置決め線Ｃ（図２参照）としても利用できる。 Similarly to the above, the other plate material 2 also forms a confirmation mark 21 made of a concave portion at the time of press molding. Here, when the other plate member 2 does not require pre-processing, the confirmation mark 21 is formed separately by press molding or engraved with a laser. If the midpoint of the comparison straight line 211 connecting the confirmation marks 21 and 21 coincides with the straight line portion 141 of the joint edge 14, the positioning line C (see FIG. 2) when one plate material 1 is overlapped with the other plate material 2. ) Can also be used.

こうして、確認マーク13,21の形成を終えた板材１,２は、図３に見られるように、重ね合わせる。このとき、上述のように、確認マーク21,21を結ぶ比較直線211の中点と、接合縁部14の直線部分141の中点とを一致させておくと、板材１,２相互の位置決めが容易になる。そして、重ね合わせた板材１,２は、図４に見られるように、接合縁部12,12及び接合縁部14を溶接し、前記接合縁部12,12及び接合縁部14の直線部分121,141に沿った溶接ビード３を形成する。 In this way, the plate materials 1 and 2 for which the confirmation marks 13 and 21 have been formed are superimposed as seen in FIG. At this time, as described above, if the midpoint of the comparison straight line 211 connecting the confirmation marks 21 and 21 and the midpoint of the straight line portion 141 of the joint edge portion 14 are made to coincide with each other, the plate materials 1 and 2 can be positioned relative to each other. It becomes easy. Then, as shown in FIG. 4, the overlapped plate members 1 and 2 are welded to the joining edge portions 12 and 12 and the joining edge portion 14, and straight portions 121 and 141 of the joining edge portions 12 and 12 and the joining edge portion 14. A weld bead 3 is formed along

溶接ビード３は、接合縁部12,14の直線部分121,141を完全に覆って両端の曲線部分122,142も縦断しており、少なからず肉盛りされる。このため、何ら比較がなければ、接合縁部12,14の直線部分121,141に沿って延び、かつ前記直線部分121,141を挟んで線対称に形成されているかが判別しにくい。しかし、本発明を適用して確認マーク13,21を設け、前記確認マーク13,21を結ぶ仮想直線131,211を設定すれば、図１に見られるように、接合縁部12,14の直線部分121,141に対する溶接ビード３の位置関係が容易に把握できる。 The weld bead 3 completely covers the straight portions 121 and 141 of the joining edge portions 12 and 14, and the curved portions 122 and 142 at both ends are also longitudinally cut. For this reason, unless there is any comparison, it is difficult to determine whether the joint edges 12 and 14 extend along the straight portions 121 and 141 and are symmetrical with respect to the straight portions 121 and 141. However, if the confirmation marks 13 and 21 are provided by applying the present invention, and the virtual straight lines 131 and 211 connecting the confirmation marks 13 and 21 are set, as shown in FIG. The positional relationship of the weld bead 3 with respect to can be easily grasped.

１一方の板材
11 開口
12 接合縁部（開口の内周縁）
121 直線部分
122 曲線部分
13 確認マーク
131 比較直線
14 接合縁部（外周縁から突出した部位）
141 直線部分
142 曲線部分
２他方の板材
21 確認マーク
211 比較直線
３溶接ビード
31 始端部分
32 終端部分 1 Plate material
11 opening
12 Joining edge (inner edge of opening)
121 Straight section
122 Curve
13 Confirmation mark
131 Comparison line
14 Joining edge (projected from the outer periphery)
141 Straight section
142 Curved part 2 The other plate
21 Confirmation mark
211 Comparison line 3 Weld bead
31 Start part
32 End part

Claims

一方の板材に他方の板材を接面させ、前記一方の板材に形成された接合縁部を他方の板材の表面に溶接して接合する重ね合わせ溶接構造であって、
一方の板材は、直線部分を曲線部分又は屈曲部分で挟んだ凹部位の接合縁部を形成し、接合縁部の直線部分の両端それぞれの延長線上に一対の確認マークを設けてなり、
前記直線部分の両端を超えて形成された直線状の溶接ビードと、前記溶接ビードに潰されない一対の確認マークを結ぶ比較直線との対比により、接合縁部の直線部分を均等に跨ぐ溶接ビードが形成されているか否かを容易に判別できる重ね合わせ溶接構造。 It is an overlap welding structure in which one plate member is brought into contact with the other plate member, and a joining edge formed on the one plate member is welded and joined to the surface of the other plate member,
One plate forms the joint edge of the recess positions sandwiching the straight portion at the curved portion or the bent portion, it is provided with a pair of check marks on opposite ends of the extension of the linear portion of the joint edge portion,
A linear weld bead formed beyond the ends of said straight portion, in comparison with Comparative straight line connecting the pair of check marks are not crushed to the weld bead, the weld bead uniformly cross the straight portion of the joint edge portion easily Undetermined that lap welding structure whether or not it is formed.

一方の板材に他方の板材を接面させ、前記一方の板材に形成された接合縁部を他方の板材の表面に溶接して接合する重ね合わせ溶接構造であって、
一方の板材は、直線部分を曲線部分又は屈曲部分で挟んだ凸部位の接合縁部を形成し、
他方の板材は、前記接合縁部の直線部分の両端それぞれの延長線上に当たる部位に一対の確認マークを設けてなり、
前記直線部分の両端を超えて形成された直線状の溶接ビードと、前記溶接ビードに潰されない一対の確認マークを結ぶ比較直線との対比により、接合縁部の直線部分を均等に跨ぐ溶接ビードが形成されているか否かを容易に判別できる重ね合わせ溶接構造。 It is an overlap welding structure in which one plate member is brought into contact with the other plate member, and a joining edge formed on the one plate member is welded and joined to the surface of the other plate member,
One plate material forms the joint edge of the convex part sandwiching the straight part between the curved part or the bent part,
The other plate member is made provided with a pair of check mark in a portion falling on the opposite ends of the extension of the linear portion of the joint edge portion,
A linear weld bead formed beyond the ends of said straight portion, in comparison with Comparative straight line connecting the pair of check marks are not crushed to the weld bead, the weld bead uniformly cross the straight portion of the joint edge portion easily Undetermined that lap welding structure whether or not it is formed.