JP2010207859A

JP2010207859A - Method and device for joining metal sheets and joined product

Info

Publication number: JP2010207859A
Application number: JP2009056546A
Authority: JP
Inventors: Takashi Haraoka; 孝原岡; Masamoto Saito; 雅基斉藤; Satoshi Mashima; 聡真嶋; Katsuji Igarashi; 勝二五十嵐; Tsukasa Morita; 司森田; Kimihiko Nakamura; 公彦中村; Toshihiro Seki; 俊裕関; Tomoaki Watari; 知明亘理; Takuji Watanabe; 卓志渡邉
Original assignee: Nissan Motor Co Ltd
Current assignee: Nissan Motor Co Ltd
Priority date: 2009-03-10
Filing date: 2009-03-10
Publication date: 2010-09-24
Anticipated expiration: 2029-03-10
Also published as: JP5446336B2

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the joining strength of metal sheets by accelerating the formation of a protrusion protruded from a protrusion-shaped part by pressing. <P>SOLUTION: The method includes a caulking step where a caulking part 6 for forming the protrusion 5 which is locked to the inner peripheral part 11a on another side face of a recess-shaped part 11 of the outer peripheral part 21a of a protrusion-shaped part 21 is made between the punch 3 and a die 4 with which the other side face of the protrusion-shaped part 21 by engaging recess-and protrusion-shaped parts 11, 21 which are formed in the end parts of two metal sheets 1, 2 each other and pressing one-side surface of the protrusion-shaped part 21. When performing the caulking step, the protrusion amount and thickness of the protrusion 5 are secured sufficiently by providing a relief part E for accelerating the protruding of the protrusion 5 in the locking part of the recess-shaped part 11 on the opposite side in the forming portion of the protrusion 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、金属板の端部どうしの接合方法およびその方法を達成するための接合装置ならびにその方法により製造される接合製品に関する。 The present invention relates to a method for joining end portions of metal plates, a joining apparatus for achieving the method, and a joined product manufactured by the method.

従来、２枚の金属板の端部どうしを接合するにあたって、それぞれの端部に互いにかみ合う凹・凸形状部を形成し、それら凹・凸形状部をかみ合わせた後に、一方側の凸形状部の表側の１箇所を、板面に垂直な方向からポンチにより押圧して、それの表側外周部に突起部を成形し、その突起部が他方側の凹形状部の裏側内周部に重ね合わされる接合方法が提案されている（例えば、特許文献１参照）。 Conventionally, when joining the end portions of two metal plates, a concave / convex shape portion that meshes with each other is formed, and after engaging the concave / convex shape portion, One place on the front side is pressed with a punch from a direction perpendicular to the plate surface, and a protrusion is formed on the front outer periphery thereof, and the protrusion is superimposed on the back inner periphery of the concave portion on the other side. A joining method has been proposed (see, for example, Patent Document 1).

特開２００３−８０３２９号公報JP 2003-80329 A

しかしながら、かかる従来の金属板の接合方法は、一方側の凸形状部の表側をポンチにより押圧する際、当然にそのポンチの押圧荷重を受けるダイが設けられ、それらポンチとダイとの間で加締めが行われて、他方側の凹形状部の裏側内周部に重ね合わせる突起部が凸形状部から形出される。 However, in such a conventional method of joining metal plates, when the front side of the convex portion on one side is pressed with a punch, a die that naturally receives the pressing load of the punch is provided, and between the punch and the die is added. Tightening is performed, and a protrusion that overlaps the inner peripheral portion on the back side of the concave portion on the other side is formed from the convex portion.

ところが、通常はダイの金属板を載置する面は平坦に形成されており、凸形状部の表側をポンチで押圧した際に、そのポンチと平坦なダイとの間で上記突起部が形出されることになる。このため、突起部の成形がダイによって規制されて、その突起部の突出量や肉厚を充分に得ることが難しくなり、結果的に、突起部自体の強度が低くなって係止力が低減し、金属板の接合強度が低下してしまう虞がある。 However, the surface on which the metal plate of the die is normally placed is formed flat, and when the front side of the convex portion is pressed with a punch, the protrusion is formed between the punch and the flat die. Will be. For this reason, the formation of the protrusion is restricted by the die, and it becomes difficult to obtain the protrusion amount and thickness of the protrusion sufficiently. As a result, the strength of the protrusion itself is lowered and the locking force is reduced. And there exists a possibility that the joining strength of a metal plate may fall.

そこで、本発明は、押圧により凸形状部から突出する突起部の成形を促進させて、金属板の接合強度を高めるようにした金属板の接合方法および接合装置ならびに接合製品を提供するものである。 Accordingly, the present invention provides a metal plate joining method, a joining device, and a joined product that promote the formation of a protruding portion that protrudes from a convex-shaped portion by pressing to increase the joining strength of the metal plate. .

本発明にあっては、２枚の金属板の端部に形成した凹・凸形状部を互いにかみ合わせて、凸形状部の片側面を押圧して、その押圧した凸形状部の外周部に、凹形状部の他側面の内周部に係止する突起部を成形する加締め部を設ける際に、突起部が型に設けた逃げ部に突出方向に向けて入り込むことを最も主要な特徴とする。 In the present invention, the concave and convex portions formed on the ends of the two metal plates are engaged with each other, one side of the convex portion is pressed, and the outer peripheral portion of the pressed convex portion is The most important feature is that when a caulking part is formed that molds a protruding part that is locked to the inner peripheral part of the other side of the concave part, the protruding part enters the relief part provided in the mold in the protruding direction. To do.

本発明によれば、突起部が型に設けた逃げ部に入り込むことにより、押圧により凸形状部の外周部に成形される突起部が、凹形状部の係止部位に突出するのが促進される。これにより、その突起部の突出量や厚さを充分に確保することができるようになり、突起部の強度が確保されて金属板の接合強度を高めることができる。 According to the present invention, when the protruding portion enters the escape portion provided in the mold, it is promoted that the protruding portion formed on the outer peripheral portion of the convex shape portion by the pressing protrudes to the locking portion of the concave shape portion. The Thereby, the protrusion amount and thickness of the protrusion can be sufficiently ensured, the strength of the protrusion can be ensured, and the bonding strength of the metal plate can be increased.

本発明の第１実施形態にかかる金属板の接合部分を示す要部平面図である。It is a principal part top view which shows the junction part of the metal plate concerning 1st Embodiment of this invention. 図１中のII−II線に対応する部分を第１の加締め型で加締め完了した状態を示す断面図である。It is sectional drawing which shows the state which crimped the part corresponding to the II-II line in FIG. 1 with the 1st crimping type | mold. 図１中のIII−III線に対応する部分を第２の加締め型で加締め完了した状態を示す断面図である。It is sectional drawing which shows the state which crimped the part corresponding to the III-III line in FIG. 1 with the 2nd crimping type | mold. 図１中のII−II線に対応する部分を第１の加締め型にセットした状態を示す断面図である。It is sectional drawing which shows the state which set the part corresponding to the II-II line in FIG. 1 to the 1st crimping type | mold. 図１中のIII−III線に対応する部分を第２の加締め型にセットした状態を示す断面図である。It is sectional drawing which shows the state which set the part corresponding to the III-III line in FIG. 1 to the 2nd crimping type | mold. 本発明の第２の実施形態にかかる接合方法を用いたサスペンションメンバの斜視図である。It is a perspective view of a suspension member using the joining method concerning a 2nd embodiment of the present invention. 図６に示すサスペンションメンバをプレス成形する前段階のテーラードブランク材の斜視図である。It is a perspective view of the tailored blank material of the previous stage which press-molds the suspension member shown in FIG. 図７に示すテーラードブランク材の接合部分に形成した凹・凸形状部を（ａ）に分離した状態と、（ｂ）にかみ合わせた状態と、で示す拡大平面図である。FIG. 8 is an enlarged plan view showing a state in which the concave / convex shape portions formed in the joined portion of the tailored blank material shown in FIG. 7 are separated into (a) and a state in which the concave / convex shaped portions are meshed with (b). 図８（ｂ）中のIX部の拡大平面図である。FIG. 9 is an enlarged plan view of a part IX in FIG. 従来のテーラードブランク材を示す斜視図である。It is a perspective view which shows the conventional tailored blank material. 本発明の第３の実施形態にかかる金属板の接合部分を示す平面図である。It is a top view which shows the junction part of the metal plate concerning the 3rd Embodiment of this invention. 図１１中のXII部分の拡大平面図である。It is an enlarged plan view of the XII part in FIG. 本発明の第３の実施形態における変形例を示す金属板の接合部分の平面図である。It is a top view of the junction part of the metal plate which shows the modification in the 3rd Embodiment of this invention. 図１３中のXIV部分の拡大平面図である。It is an enlarged plan view of the XIV part in FIG.

以下、本発明の実施形態について図面を参照しつつ詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[第１の実施形態]
図１〜図５は、本発明にかかる金属板の接合方法および接合装置ならびに接合製品の第１の実施形態を示し、この第１の実施形態は本発明の基本構成となる実施形態であって、図１に示すように、２枚の金属板１、２の端部に互いにかみ合う凹・凸形状部１１、２１を形成し、それぞれの凹・凸形状部１１、２１をかみ合わせた状態で加締めるようにしたものである。 [First embodiment]
1 to 5 show a first embodiment of a metal plate joining method, a joining apparatus, and a joined product according to the present invention, and the first embodiment is an embodiment serving as a basic configuration of the present invention. As shown in FIG. 1, concave and convex shaped portions 11 and 21 that mesh with each other are formed at the ends of the two metal plates 1 and 2, and the concave and convex shaped portions 11 and 21 are engaged with each other. It is something to be tightened.

凸形状部２１は、先端辺ｆが平らとなり、かつ、両側辺ｓが根本（金属板２の本体側）に向かって直線的に縮幅して、全体的に逆台形状となって金属板２の本体側から突出しており、金属板１に形成した凹形状部１１は、その凸形状部２１の外側に沿った形状をもって凹設されている。 The convex portion 21 has a flat tip end side f, and both side sides s linearly shrink toward the root (the main body side of the metal plate 2) to form an inverted trapezoidal shape as a whole. The concave-shaped part 11 which protrudes from the main body side 2 and is formed on the metal plate 1 is recessed with a shape along the outside of the convex-shaped part 21.

本実施形態の接合方法は、図１〜図３に示すように、互いにかみ合った凹・凸形状部１１、２１のうち、凸形状部２１の片側面をポンチ３で押圧し、そのポンチ３と凸形状部２１の他側面を支持するダイ４との間で、加締め部６を設ける加締め工程を施す。この加締め工程は、凸形状部２１の外周部２１ａに、凹形状部１１の他側面（ダイ４に沿った面）の内周部１１ａに係止される突起部５を成形する。そして、この加締め工程が施される際に、突起部５の成形部分、つまり、ダイ４がポンチ３に対向する周辺部分に、その突起部５が相手側の凹形状部１１の係止部位に突出するのを促進する逃げ部Ｅを設けている。このとき、逃げ部Ｅは、凸形状部と凹形状部の両方に跨って設けている。 As shown in FIGS. 1 to 3, the joining method of the present embodiment presses one side surface of the convex portion 21 among the concave and convex portions 11 and 21 meshing with each other with the punch 3, A caulking process for providing the caulking portion 6 is performed between the die 4 that supports the other side surface of the convex portion 21. In this caulking step, the protruding portion 5 that is locked to the inner peripheral portion 11 a of the other side surface (the surface along the die 4) of the concave shape portion 11 is formed on the outer peripheral portion 21 a of the convex shape portion 21. Then, when this caulking step is performed, the protruding portion 5 is formed on the peripheral portion where the die 4 is opposed to the punch 3, that is, the protruding portion 5 is a locking portion of the mating concave portion 11. An escape portion E that promotes the protrusion is provided. At this time, the escape portion E is provided across both the convex portion and the concave portion.

かかる接合方法を達成する接合装置は、図４、図５に示すように、凸形状部２１の片側面を押圧するポンチ３と、凸形状部２１の他側面に配置されてポンチ３の押圧力を受け、そのポンチ３との相対的な近接加圧によって、凸形状部２１の外周部２１ａに、凹形状部１１の他側面の内周部１１ａに係止する突起部５を成形するダイ４と、を有する加締め型７を備える。そして、ダイ４がポンチ３に対向する周辺部分に、突起部５の厚さに相当する深さｄ１、ｄ２を有する凹部８を形成した構成としている。 As shown in FIGS. 4 and 5, a joining device that achieves such a joining method includes a punch 3 that presses one side surface of the convex portion 21, and a pressing force of the punch 3 that is disposed on the other side surface of the convex portion 21. The die 4 that molds the protrusion 5 that engages with the inner peripheral part 11a on the other side surface of the concave part 11 on the outer peripheral part 21a of the convex part 21 by pressurizing the punch 3 relative to the punch 3. And a crimping die 7 having the following. The die 4 has a configuration in which a concave portion 8 having depths d1 and d2 corresponding to the thickness of the protrusion 5 is formed in the peripheral portion facing the punch 3.

上記凹部８は、上述した逃げ部Ｅを構成するものである。そして、逃げ部Ｅを、凸形状部２１と凹形状部１１の両方に跨って設けるために、凹部８は、図４および図５に示すように、互いにかみ合った凸形状部２１と凹形状部１１の両方に跨る範囲で形成されている。 The said recessed part 8 comprises the escape part E mentioned above. And in order to provide the escape part E ranging over both the convex-shaped part 21 and the concave-shaped part 11, as shown in FIG.4 and FIG.5, the recessed part 8 is mutually engaged in the convex-shaped part 21 and concave-shaped part. 11 is formed in a range straddling both.

前記加締め部６は、図２に示すように、凸形状部２１の表面２ａを押圧して、その押圧した凸形状部２１の外周部２１ａに、凹形状部１１の裏面１ｂの内周部１１ａに係止する突起部５を成形する第１の加締め部６１と、図３に示すように、凸形状部２１の裏面２ｂを押圧して、その押圧した凸形状部２１の外周部２１ａに、凹形状部１１の表面１ａの内周部１１ａに係止する突起部５を成形する第２の加締め部６２と、からなる。そして、図１に示すように、第１の加締め部６１と第２の加締め部６１、６２とを、１つの凸形状部２１に対して併設配置している。 As shown in FIG. 2, the crimping portion 6 presses the surface 2 a of the convex portion 21, and the inner peripheral portion of the back surface 1 b of the concave portion 11 on the outer peripheral portion 21 a of the pressed convex portion 21. As shown in FIG. 3, the first caulking portion 61 that molds the protruding portion 5 to be engaged with 11a and the back surface 2b of the convex portion 21 are pressed, and the outer peripheral portion 21a of the pressed convex portion 21 is pressed. And a second caulking portion 62 for forming the protruding portion 5 to be engaged with the inner peripheral portion 11a of the surface 1a of the concave portion 11. As shown in FIG. 1, the first caulking portion 61 and the second caulking portions 61 and 62 are disposed side by side with respect to one convex portion 21.

つまり、第１の加締め部６１と第２の加締め部６２とは、凸形状部２１から突出した突起部５が凹形状部１１の内周部１１ａに係止する部位が、金属板１、２の表裏方向に対して互いに逆の関係となっている。 In other words, the first caulking part 61 and the second caulking part 62 are such that the portion where the protruding part 5 protruding from the convex part 21 is locked to the inner peripheral part 11a of the concave part 11 is the metal plate 1. The two front and back directions are opposite to each other.

そして、このように第１の加締め部６１と第２の加締め部６２とを、１つの凸形状部２１に対して併設配置したことにより、上述した接合装置は、加締め型７を、図２に示すように、凸形状部２１の表面２ａを押圧する第１のポンチ３１と、凸形状部２１の裏面２ｂに配置される第１のダイ４１と、を有する第１の加締め型７１を設けるとともに、凸形状部２１の裏面２ｂを押圧する第２のポンチ３２と、凸形状部２１の表面２ａに配置される第２のダイ４２と、を有する第２の加締め型７２と、を設けて構成してある。そして、第１の加締め型７１と第２の加締め型７２とを、１つの凸形状部２１に対して併設配置してある。 And by having arranged the 1st crimping part 61 and the 2nd crimping part 62 side by side with respect to one convex-shaped part 21 in this way, the joining apparatus mentioned above makes the crimping type | mold 7 the As shown in FIG. 2, a first caulking die having a first punch 31 that presses the front surface 2 a of the convex portion 21 and a first die 41 disposed on the back surface 2 b of the convex portion 21. And a second caulking die 72 having a second punch 32 for pressing the back surface 2b of the convex portion 21 and a second die 42 disposed on the front surface 2a of the convex portion 21. Are provided. The first caulking die 71 and the second caulking die 72 are disposed side by side with respect to one convex portion 21.

すなわち、第１のポンチ３１と第１のダイ４１とが対となった第１の加締め型７１によって第１の加締め部６１を成形し、第２のポンチ３２と第２のダイ４２とが対となった第２の加締め型７２によって第２の加締め部６２を成形し、これら第１および第２の加締め型７１、７２は、金属板１、２に対して表裏方向に逆の組み合わせとなっている。 That is, the first crimping portion 61 is formed by the first crimping die 71 in which the first punch 31 and the first die 41 are paired, and the second punch 32 and the second die 42 are The second caulking portion 62 is formed by the second caulking die 72 paired with each other, and the first and second caulking dies 71 and 72 are in the front and back direction with respect to the metal plates 1 and 2. The reverse combination.

このとき、第１および第２の加締め型７１、７２には、第１および第２のポンチ３１、３２を昇降案内しつつ、金属板１、２を第１および第２のダイ４１、４２との間に挟持する押さえ台９１、９２が含まれる。 At this time, the first and second caulking dies 71, 72 guide the metal plates 1, 2 to the first and second dies 41, 42 while guiding the first and second punches 31, 32 up and down. Presser bases 91 and 92 sandwiched therebetween.

本実施形態では、第１および第２の加締め型７１、７２は、凸形状部２１の先端辺ｆに沿って並設してある。また、第１および第２のポンチ３１、３２の押圧面形状を矩形状とすることにより、第１および第２の加締め部６１、６２の加締め形状が矩形状としている。 In the present embodiment, the first and second crimping dies 71 and 72 are juxtaposed along the front end side f of the convex portion 21. Moreover, the crimping shape of the 1st and 2nd crimping parts 61 and 62 is made into the rectangular shape by making the press surface shape of the 1st and 2nd punches 31 and 32 into a rectangular shape.

また、上述した凹部８は、図２に示すように、第１の加締め型７１では第１の凹部８１として形成されるとともに、図３に示すように、第２の加締め型７２では第２の凹部８２として形成される。 Further, the concave portion 8 described above is formed as the first concave portion 81 in the first caulking die 71 as shown in FIG. 2, and the second caulking die 72 in the second caulking die 72 as shown in FIG. Two recesses 82 are formed.

このように、凸形状部２１から相手側の凹形状部１１の係止部位に係止する突起部５を促進して突出させて凹部８に入り込ませるという上述の接合方法を用いることにより、図１に示すように、金属板１、２を相互に接合した接合製品１０として提供することができる。 In this way, by using the above-described joining method in which the protruding portion 5 that is locked from the protruding portion 21 to the locking portion of the recessed portion 11 on the other side is promoted to protrude into the recessed portion 8, As shown in FIG. 1, it can provide as the joining product 10 which joined the metal plates 1 and 2 mutually.

ここで、凹形状部１１の係止部位とは、前述したように、第１の加締め部６１では、凹形状部１１の裏面１ｂの内周部１１ａであり、第２の加締め部６２では、凹形状部１１の表面１ａの内周部１１ａである。 Here, as described above, the locking portion of the concave-shaped portion 11 is the inner peripheral portion 11a of the back surface 1b of the concave-shaped portion 11 in the first crimped portion 61, and the second crimped portion 62. Then, it is the inner peripheral part 11a of the surface 1a of the concave shaped part 11. FIG.

以上説明したように、第１の実施形態に係わる金属板の接合方法によれば、凸形状部２１の片側面をポンチ３で押圧し、凸形状部２１の外周部２１ａに、ダイ４に沿って凹形状部１１の係止部位（他側面の内周部１１ａ）に係止される突起部５を成形する際に、その突起部５の成形部分（ダイ４）に逃げ部Ｅを設けたことにより、押圧により成形される突起部５が、凹形状部１１の係止部位に突出するのが促進される。これにより、その突起部５の突出量や厚さを充分に確保することができ、突起部５の強度が確保されて金属板１、２の接合強度を高めることができる。 As described above, according to the metal plate joining method according to the first embodiment, one side surface of the convex portion 21 is pressed with the punch 3, and the outer peripheral portion 21 a of the convex portion 21 is aligned along the die 4. When forming the protrusion 5 that is locked to the locking portion (the inner peripheral portion 11a on the other side surface) of the concave-shaped portion 11, a relief portion E is provided in the molding portion (die 4) of the protrusion 5 Thereby, it is promoted that the protruding portion 5 formed by pressing protrudes to the locking portion of the concave portion 11. Thereby, the protrusion amount and thickness of the protrusion 5 can be sufficiently secured, the strength of the protrusion 5 is ensured, and the joining strength of the metal plates 1 and 2 can be increased.

また、本実施形態では、凸形状部２１から突出する突起部５が凹形状部１１の内周部１１ａに係止する部位が、金属板１、２の表裏方向に対して互いに逆の関係となる第１の加締め部６１と第２の加締め部６２とを、１つの凸形状部２１に対して併設配置してある。これにより、それら第１および第２の加締め部６１、６２によってそれぞれ成形される突起部５が、凹形状部１１の表裏両面１ａ、１ｂに係止されて、互いにかみ合った凹・凸形状部１１、２１は表裏方向に高い加締め強度を発揮できる。 Moreover, in this embodiment, the site | part which the projection part 5 which protrudes from the convex-shaped part 21 latches to the inner peripheral part 11a of the concave-shaped part 11 has mutually opposite relationship with respect to the front and back direction of the metal plates 1 and 2. The first caulking part 61 and the second caulking part 62 are arranged side by side with respect to one convex shape part 21. Accordingly, the protrusions 5 formed by the first and second caulking portions 61 and 62 are respectively engaged with the front and back surfaces 1a and 1b of the concave portion 11, and are engaged with each other. 11 and 21 can exhibit high crimping strength in the front and back direction.

さらに、突起部５を促進して突出させる逃げ部Ｅを、凸形状部２１と凹形状部１１の両方に跨って設けたので、凸形状部２１を押圧した際に、その押圧部分が、図２および図３に示すように、逃げ部Ｅの凸形状部２１の外周部２１ａに対応した部分Ｅａから凹形状部１１の内周部１１ａに対応した部分Ｅｂへと円滑に伸展できる。これにより、突起部５の成形を円滑に行えるようになり、その突起部５の長さおよび厚さをより充分に確保できる。 Further, since the escape portion E that promotes and protrudes the protruding portion 5 is provided across both the convex shape portion 21 and the concave shape portion 11, when the convex shape portion 21 is pressed, the pressing portion is shown in FIG. As shown in FIG. 2 and FIG. 3, the portion Ea corresponding to the outer peripheral portion 21 a of the convex portion 21 of the escape portion E can be smoothly extended to the portion Eb corresponding to the inner peripheral portion 11 a of the concave portion 11. Thereby, the projection 5 can be molded smoothly, and the length and thickness of the projection 5 can be more sufficiently ensured.

また、接合方法を達成するための金属板１、２の接合装置によれば、凸形状部２１の片側面を押圧するポンチ３と、凸形状部２１の他側面に配置されたダイ４とを備える加締め型７を構成し、ダイ４がポンチ３に対向する周辺部分に、突起部５の厚さに相当する深さｄ１、ｄ２を有する凹部８を形成したので、ダイ４に凹部８を形成するという簡単な構造をもって、突起部５が凹形状部１１の係止部位に突出するのを容易に促進でき、突起部５の強度を充分に確保することができる。 Moreover, according to the joining apparatus of the metal plates 1 and 2 for achieving the joining method, the punch 3 that presses one side surface of the convex portion 21 and the die 4 that is disposed on the other side surface of the convex portion 21 are provided. Since the concave portion 8 having the depths d1 and d2 corresponding to the thickness of the protruding portion 5 is formed in the peripheral portion where the die 4 is provided and the die 4 is opposed to the punch 3, the concave portion 8 is formed in the die 4. With the simple structure of forming, the protrusion 5 can be easily promoted to protrude to the locking portion of the concave portion 11, and the strength of the protrusion 5 can be sufficiently secured.

さらに、前述の接合方法によれば、凸形状部２１から突出する突起部５が凹形状部１１の内周部１１ａに係止する部位が、金属板１、２の表裏方向に対して互いに逆の関係となる第１の加締め部６１と第２の加締め部６２とを、１つの凸形状部２１に対して並設配置してある。これにより、１つの凸形状部２１に対して、第１の加締め部６１および第２の加締め部６２の突起部５が、凹形状部１１の表・裏面１ａ、１ｂに係止されることになり、互いにかみ合った凸形状部２１と凹形状部１１との表裏方向の加締め強度をより高めることができる。 Furthermore, according to the above-described joining method, the portions where the protrusions 5 protruding from the convex portion 21 are engaged with the inner peripheral portion 11a of the concave portion 11 are opposite to each other with respect to the front and back directions of the metal plates 1 and 2. The first caulking portion 61 and the second caulking portion 62 that are in the relationship are arranged side by side with respect to one convex portion 21. Thereby, the protrusion part 5 of the 1st crimping part 61 and the 2nd crimping part 62 is latched by the front and back surface 1a, 1b of the concave shape part 11 with respect to the one convex-shaped part 21. In other words, it is possible to further increase the caulking strength in the front and back direction of the convex portion 21 and the concave portion 11 that mesh with each other.

さらにまた、前述の接合装置によれば、第１のポンチ３１と第１のダイ４１とが対となった第１の加締め型７１と、第２のポンチ３２と第２のダイ４２とが対となった第２の加締め型７２とを、金属板１、２に対して表裏方向に単に逆の組み合わせとすることにより、第１の加締め部６１と第２の加締め部６２とを容易に成形することができる。そして、逆の組み合わせとなった第１の加締め型７１と第２の加締め型７２とを、１つの凸形状部２１に対して併設配置したことにより、１つの凸形状部２１に対して、第１の加締め型７１と第２の加締め型７２によって成形される突起部５が、凹形状部１１の表・裏面１ａ、１ｂに係止されることになり、互いにかみ合った凸形状部２１と凹形状部１１との表裏方向の加締め強度をより高めることができる。 Furthermore, according to the above-mentioned joining apparatus, the first crimping die 71 in which the first punch 31 and the first die 41 are paired, the second punch 32 and the second die 42 are provided. The first caulking part 61 and the second caulking part 62 are obtained by simply combining the second caulking die 72 that is paired with the metal plates 1 and 2 in the reverse direction in the front and back direction. Can be easily formed. And the 1st crimping type | mold 71 and the 2nd crimping type | mold 72 which became the reverse combination were arrange | positioned side by side with respect to one convex-shaped part 21, and with respect to one convex-shaped part 21 The projection 5 formed by the first caulking die 71 and the second caulking die 72 is locked to the front and back surfaces 1a and 1b of the concave portion 11, and is a convex shape meshing with each other. The caulking strength in the front and back direction between the portion 21 and the concave portion 11 can be further increased.

また、上記接合方法を用いた金属板１、２の接合製品１０では、逃げ部Ｅによって突出量や厚さを充分に確保した突起部５を凹形状部１１の係止部位に係止させて、凹・凸形状部１１、２１の加締め強度を高めることができるので、２つの金属板１、２の接合強度が増大して、それら金属板１、２の一体化をより促進することができる。 Moreover, in the joining product 10 of the metal plates 1 and 2 using the joining method, the protruding portion 5 having a sufficient amount of protrusion and thickness secured by the escape portion E is locked to the locking portion of the recessed portion 11. Since the caulking strength of the concave / convex shaped portions 11 and 21 can be increased, the bonding strength of the two metal plates 1 and 2 can be increased, and the integration of the metal plates 1 and 2 can be further promoted. it can.

[第２の実施形態]
図６〜図１０は本発明の第２の実施形態を示し、前記第１の実施形態と同一構成部分に同一符号を付して重複する説明を省略して述べるとともに、第１の実施形態の図を一部参照しつつ説明するものとする。 [Second Embodiment]
6 to 10 show a second embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and the first embodiment is described. The description will be made with reference to some of the drawings.

本実施形態は、図６に示すように、金属板の接合製品として自動車のサスペンションメンバ１００に本発明を適用した場合を示す。サスペンションメンバ１００は、車幅方向両側にほぼ車両前後方向に延在する一対のサイド部材１０１、１０２と、これらサイド部材１０１、１０２の前端部どうしおよび後端部どうしをそれぞれ連結するフロント部材１０３およびリヤ部材１０４と、によってほぼ井桁状に構成される。そして、サイド部材１０１、１０２の前後端部を床下の車体メンバに結合して、それらサイド部材１０１、１０２に図示省略したサスペンションアームなどの懸架部材が取り付けられる。 In the present embodiment, as shown in FIG. 6, the present invention is applied to a suspension member 100 of an automobile as a joined product of metal plates. The suspension member 100 includes a pair of side members 101 and 102 that extend substantially in the vehicle longitudinal direction on both sides in the vehicle width direction, a front member 103 that connects the front end portions and the rear end portions of the side members 101 and 102, respectively. The rear member 104 is configured in a substantially cross-beam shape. The front and rear end portions of the side members 101 and 102 are coupled to the vehicle body members under the floor, and suspension members such as suspension arms (not shown) are attached to the side members 101 and 102.

サスペンションメンバ１００は、図７に示すように、必要な部位に必要な強度を持った複数の金属板であるブランク材１１１、１１２、１１３、１１４を配置して、それらを互いに接合したテーラードブランク材１１０が用いられ、そのテーラードブランク材１１０をプレス成形して上記サスペンションメンバ１００を製造する。 As shown in FIG. 7, the suspension member 100 includes a plurality of blank plates 111, 112, 113, and 114, each having a required strength, and a tailored blank member obtained by joining them together. 110 is used, and the suspension member 100 is manufactured by press-molding the tailored blank material 110.

テーラードブランク材１１０は、隣接するブランク材１１１、１１２、１１３、１１４の板厚に差が生じており、それら板厚差が有るブランク材１１１、１１２、１１３、１１４どうしを接合することになり、それらの接合部Ｊ１、Ｊ２、Ｊ３、Ｊ４に本発明を適用する。 The tailored blank material 110 has a difference in the plate thickness of the adjacent blank materials 111, 112, 113, 114, and the blank materials 111, 112, 113, 114 having the plate thickness difference are joined to each other. The present invention is applied to the joints J1, J2, J3, and J4.

接合部Ｊ１、Ｊ２、Ｊ３、Ｊ４は、接合しようとするブランク材１１１、１１２、１１３、１１４を、図８に示すように、第１の実施形態と同様に対をなす金属板１、２として示すものとして、以下、その接合方法を述べる。 As shown in FIG. 8, the joining parts J1, J2, J3, and J4 are the metal plates 1 and 2 that make a pair as in the first embodiment, as shown in FIG. Hereinafter, the bonding method will be described.

図８（ａ）に示すように、金属板１、２の接合しようとする端部には、複数の凹・凸形状部１１、２１および２１′、１１′が打抜き加工される。このとき、一方の金属板１の凹形状部１１と他方の金属板２の凸形状部２１とが対向し、一方の金属板１の凸形状部１１′と他方の金属板２の凹形状部２１′とが対向している。 As shown in FIG. 8 (a), a plurality of concave / convex shaped portions 11, 21 and 21 ', 11' are punched at the end portions of the metal plates 1, 2 to be joined. At this time, the concave shape portion 11 of one metal plate 1 and the convex shape portion 21 of the other metal plate 2 face each other, and the convex shape portion 11 ′ of the one metal plate 1 and the concave shape portion of the other metal plate 2. 21 'is facing.

そして、図８（ｂ）に示すように、上述の凹・凸形状部１１、２１および２１′、１１′を互いにかみ合わせた後、図９に示すように、１つの凸形状部２１に対して第１のポンチ３１および第２のポンチ３２を用いた前記と同様の第１の加締め部６１および第２の加締め部６２を併設して本発明にかかる接合方法が施される。なお、凸形状部２１、１１′は、第１の実施形態と同様に逆台形状に突出し、凹形状部１１、２１′は、その逆台形状に沿った形状で凹設されている。 Then, as shown in FIG. 8 (b), the above-mentioned concave / convex shaped portions 11, 21 and 21 ', 11' are engaged with each other, and then, as shown in FIG. The joining method according to the present invention is applied with the first caulking portion 61 and the second caulking portion 62 similar to those described above using the first punch 31 and the second punch 32. In addition, the convex-shaped parts 21 and 11 'protrude in the inverted trapezoid shape similarly to 1st Embodiment, and the concave-shaped parts 11 and 21' are recessedly provided by the shape along the inverted trapezoid shape.

また、本実施形態では、上述した凹・凸形状部１１、２１および２１′、１１′のうち、第１の実施形態に示したと同様に、一方の金属板１の凹形状部１１と他方の金属板２の凸形状部２１とに本発明を適用した場合を例にとって説明する。 Moreover, in this embodiment, among the concave / convex shaped portions 11, 21 and 21 ', 11' described above, the concave shaped portion 11 of one metal plate 1 and the other of the concave portions 11 and 21 ', 11' are the same as shown in the first embodiment. A case where the present invention is applied to the convex portion 21 of the metal plate 2 will be described as an example.

ここで、本実施形態が第１の実施形態と主に異なる点は、第１の加締め部６１と第２の加締め部６２とを併設するにあたって、１つの凸形状部２１に対してそれら第１の加締め部６１と第２の加締め部６２とを交互に総計で３箇所以上（本実施形態では３箇所）設けたことにある。 Here, the main difference between the present embodiment and the first embodiment is that when the first caulking portion 61 and the second caulking portion 62 are provided side by side with respect to one convex shape portion 21. The first caulking portion 61 and the second caulking portion 62 are alternately provided at a total of three or more (three in the present embodiment).

すなわち、凸形状部２１の中央部に第１の加締め部６１を設け、その両側に第２の加締め部６２を設けてある。もちろん、第１の加締め部６１は、図２および図４に示すように、第１のポンチ３１と第１のダイ４１とを有する第１の加締め型７１で成形するとともに、第２の加締め部６２は、図３および図５に示すように、第２のポンチ３２と第２のダイ４２とを有する第２の加締め型７２で成形する。 That is, the 1st crimping part 61 is provided in the center part of the convex-shaped part 21, and the 2nd crimping part 62 is provided in the both sides. Of course, as shown in FIG. 2 and FIG. 4, the first caulking portion 61 is molded by the first caulking die 71 having the first punch 31 and the first die 41, and the second caulking portion 61 The caulking portion 62 is formed by a second caulking die 72 having a second punch 32 and a second die 42, as shown in FIGS.

そして、第１の加締め部６１では、図２に示すように、第１のポンチ３１の押圧により、凸形状部２１の外周部２１ａに、凹形状部１１の裏面１ｂの内周部１１ａに係止する突起部５を成形する。また、第２の加締め部６２では、図３に示すように、第２のポンチ３２の押圧により、凸形状部２１の外周部２１ａに、凹形状部１１の表面１ａの内周部１１ａに係止する突起部５を成形する。そして、それぞれ成形される突起部５が、凹形状部１１の表裏両面１ａ、１ｂに係止する。さらに、第１のダイ４１には逃げ部Ｅとなる凹部８１と、第２のダイ４２には逃げ部Ｅとなる凹部８２と、が形成される。 And in the 1st crimping part 61, as shown in FIG. 2, by the press of the 1st punch 31, it is to the outer peripheral part 21a of the convex-shaped part 21, and to the inner peripheral part 11a of the back surface 1b of the concave-shaped part 11. The protrusion 5 to be locked is formed. Moreover, in the 2nd crimping part 62, as shown in FIG. 3, it presses to the outer peripheral part 21a of the convex-shaped part 21, and the inner peripheral part 11a of the surface 1a of the concave-shaped part 11 by the press of the 2nd punch 32. The protrusion 5 to be locked is formed. And the projection part 5 shape | molded respectively latches to the front and back both surfaces 1a and 1b of the concave-shaped part 11. FIG. Further, the first die 41 is formed with a recess 81 serving as the escape portion E, and the second die 42 is formed with a recess 82 serving as the escape portion E.

そして、このようにして複数のブランク材１１１、１１２、１１３、１１４の互いに接合しようとする２つの金属板１、２を加締め接合することにより、テーラードブランク材１１０は接合部Ｊ１、Ｊ２、Ｊ３、Ｊ４で強固に接合され、その後、サスペンションメンバ１００を形出するためにテーラードブランク材１１０をプレス成形することになる。 The tailored blank 110 is joined to the joints J1, J2, J3 by caulking and joining the two metal plates 1, 2 to be joined to each other in this manner. , J4, and then the tailored blank 110 is press-molded to form the suspension member 100.

このように所望の形状にプレス成形したサスペンションメンバ１００は、車体を懸架する部材であり、過大な荷重が作用することになる。そのため、本実施形態では、組立ライン上で他のプレス部品とともに溶接組立を行う際に、上述の接合部Ｊ１、Ｊ２、Ｊ３、Ｊ４を同時に溶接して製品化する。 The suspension member 100 press-molded in a desired shape as described above is a member that suspends the vehicle body, and an excessive load is applied. Therefore, in this embodiment, when performing welding assembly together with other pressed parts on the assembly line, the above-described joints J1, J2, J3, and J4 are simultaneously welded to produce a product.

以上説明したように、第２の実施形態に係わる金属板の接合方法によれば、１つの凸形状部２１に対して第１の加締め部６１と第２の加締め部６２とを併設配置する際に、突起部５の成形部分に逃げ部Ｅを設けたことにより、第１の実施形態と同様の作用効果を奏することができる。 As described above, according to the metal plate joining method according to the second embodiment, the first caulking portion 61 and the second caulking portion 62 are disposed side by side with respect to one convex portion 21. In doing so, by providing the relief portion E in the molded portion of the protrusion 5, the same effects as those of the first embodiment can be achieved.

とくに、本実施形態では、第１の実施形態の効果に加えて、１つの凸形状部２１に対してそれら第１の加締め部６１と第２の加締め部６２とを交互に総計で３箇所設けたので、突起部５の係止側が互いに金属板１の表裏逆側となる第１の加締め部６１および第２の加締め部６２のうち、一方の加締め部の両側に他方の加締め部が配置されることになる。 In particular, in the present embodiment, in addition to the effects of the first embodiment, the first caulking portion 61 and the second caulking portion 62 are alternately arranged with respect to one convex shape portion 21 in total. Since the locking portion of the protrusion 5 is opposite to the front and back sides of the metal plate 1, the first caulking portion 61 and the second caulking portion 62, which are on the opposite sides of the metal plate 1, A caulking part will be arranged.

つまり、本実施形態のように、第１の加締め部６１の両側に第２の加締め部６２を配置した場合には、中間に配置される第１の加締め部６１では、突起部５の係止側が金属板１の裏面１ｂとなり、２箇所設けた第２の加締め部６２では、突起部５の係止側が金属板１の表面１ａとなる。 That is, when the 2nd crimping part 62 is arrange | positioned on both sides of the 1st crimping part 61 like this embodiment, in the 1st crimping part 61 arrange | positioned in the middle, the projection part 5 The locking side of the metal plate 1 is the back surface 1 b of the metal plate 1, and in the second caulking portions 62 provided at two locations, the locking side of the protrusion 5 is the surface 1 a of the metal plate 1.

これにより、一方の加締め部（第１の加締め部６１）を、それの両側に配置した他方の加締め部（第２の加締め部６２）で、金属板１の表裏逆側から板面に対して垂直方向に支えることができるため、凹・凸形状部１１、２１の加締め強度を更に高めることができる。 Thereby, one caulking part (first caulking part 61) is the other caulking part (second caulking part 62) disposed on both sides of the metal plate 1 from the reverse side of the metal plate 1. Since it can be supported in a direction perpendicular to the surface, the caulking strength of the concave / convex shaped portions 11 and 21 can be further increased.

また、本実施形態の接合製品であるサスペンションメンバ１００は、ブランク材１１１、１１２、１１３、１１４の接合部Ｊ１、Ｊ２、Ｊ３、Ｊ４を、上述した方法で加締めたことにより、高い加締め強度をもって接合されたテーラードブランク材１１０を得ることができる。これにより、上述した加締め接合したのみのテーラードブランク材１１０を、溶接することなくそのままプレス成形することができ、安価なテーラードブランク材１１０を提供することができる。 In addition, the suspension member 100 which is a bonded product of the present embodiment has a high crimping strength by crimping the joints J1, J2, J3, and J4 of the blank materials 111, 112, 113, and 114 by the method described above. The tailored blank material 110 joined with can be obtained. Thereby, the tailored blank material 110 which has just been crimped and joined can be press-formed without being welded, and an inexpensive tailored blank material 110 can be provided.

つまり、図１０に示すように、従来のテーラードブランク材１１０Ａでは、接合部Ｊ１、Ｊ２、Ｊ３、Ｊ４をレーザ溶接やプラズマ溶接などの溶接Ｗを施した後にプレス成形していた。このため、プレス成形の前段階で溶接Ｗの施工工程が必要になってしまう。 That is, as shown in FIG. 10, in the conventional tailored blank material 110A, the joints J1, J2, J3, and J4 are press-molded after welding W such as laser welding or plasma welding. For this reason, the construction process of welding W will be needed before the press molding.

これに対し、本実施形態では、プレス成形の前段階での溶接が不要となるため、レーザ溶接やプラズマ溶接による従来のテーラードブランク工法に比べ、接合部Ｊ１、Ｊ２、Ｊ３、Ｊ４を単に加締め加工で済ませることができ、接合速度を速くできるとともに、設備費や冶工具費を安く抑えることができ、サスペンションメンバ１００のローコスト化を達成できる。 On the other hand, in this embodiment, since welding in the previous stage of press forming is not required, the joints J1, J2, J3, and J4 are simply swaged as compared with the conventional tailored blank method using laser welding or plasma welding. Processing can be completed, the joining speed can be increased, equipment costs and tooling costs can be reduced, and the suspension member 100 can be reduced in cost.

なお、本実施形態では、プレス成形で形出したサスペンションメンバ１００の接合部Ｊ１、Ｊ２、Ｊ３、Ｊ４を、組立ラインで他のプレス部品とともに溶接することを述べたが、サスペンションメンバ１００のように過大な荷重が作用しない接合製品であれば、接合部の溶接は必ずしも必要とはしない。 In the present embodiment, it has been described that the joints J1, J2, J3, and J4 of the suspension member 100 formed by press molding are welded together with other pressed parts on the assembly line. If it is a joined product to which an excessive load does not act, welding of the joint is not necessarily required.

なお、本実施形態では、２枚の金属板１、２のうち、他方の金属板２に形成した凸形状部２１に第１および第２の加締め部６１、６２を成形した場合を開示するが、一方の金属板１に形成した凸形状部１１′にあっても、同様に第１および第２の加締め部６１、６２を成形することができる。 In the present embodiment, the case where the first and second caulking portions 61 and 62 are formed on the convex portion 21 formed on the other metal plate 2 of the two metal plates 1 and 2 is disclosed. However, even if it exists in convex-shaped part 11 'formed in one metal plate 1, the 1st and 2nd crimping parts 61 and 62 can be shape | molded similarly.

[第３の実施形態]
図１１および図１２は、本発明の第３の実施形態を示し、前記各実施形態と同一構成部分に同一符号を付して重複する説明を省略して述べる。 [Third embodiment]
FIGS. 11 and 12 show a third embodiment of the present invention, in which the same components as those of the above-described embodiments are denoted by the same reference numerals and redundant description is omitted.

本実施形態の金属板の接合方法は、図１１および図１２に示すように、基本的に第１の実施形態と同様に、２枚の金属板１、２の端部に形成した凹・凸形状部１１、２１をかみ合わせて、１つの凸形状部２１に対し、第１のポンチ３１および第２のポンチ３２を用いた前記とほぼ同様の第１の加締め部６１と第２の加締め部６２とを併設してある。そして、それぞれの加締め部６１、６２の突起部５を形成するにあたって、図２〜図５に示した逃げ部Ｅ（凹部８）を設けてある。また、第２の実施形態と同様に、第１の加締め部６１と第２の加締め部６２を交互に総計で３箇所以上設けてある。 As shown in FIG. 11 and FIG. 12, the metal plate joining method of this embodiment is basically a concave / convex formed on the ends of two metal plates 1 and 2 as in the first embodiment. The first caulking portion 61 and the second caulking that are substantially the same as those described above using the first punch 31 and the second punch 32 for one convex shape portion 21 by engaging the shape portions 11 and 21. A unit 62 is also provided. And in forming the projection part 5 of each crimping part 61 and 62, the escape part E (recessed part 8) shown in FIGS. 2-5 is provided. Further, similarly to the second embodiment, the first caulking portion 61 and the second caulking portion 62 are alternately provided in three or more places in total.

なお、本実施形態の凹・凸形状部１１、２１および２１′、１１′は、図１２に示すように、凸形状部２１、１１′は先端部分が半円形状に突出し、凹形状部１１、２１′は、凸形状部２１、１１′の先端部分に沿った半円形状に凹設された形状としている。 As shown in FIG. 12, the concave / convex shaped portions 11, 21 and 21 ', 11' of the present embodiment project semi-circular at the tips of the convex shaped portions 21, 11 '. , 21 ′ has a shape recessed in a semicircular shape along the tip portions of the convex portions 21, 11 ′.

ここで、本実施形態が第１および第２の実施形態と主に異なる点は、第１の加締め部６１と第２の加締め部６２とを、凸形状部２１の外周に沿って交互に総計で５箇所配置したことにある。 Here, this embodiment is mainly different from the first and second embodiments in that the first caulking portion 61 and the second caulking portion 62 are alternately arranged along the outer periphery of the convex portion 21. In total, there are five places.

この場合、第１の加締め部６１を凸形状部２１の中心位置に配置し、その第１の加締め部６１の両側に所定間隔をおいて第２の加締め部６２を配置し、さらに、その第２の加締め部６２の外側に所定間隔をおいて第１の加締め部６１を配置してある。もちろん、第１の加締め部６１は、図２および図４に示す第１の加締め型７１によって成形され、第２の加締め部６２は、図３および図５に示す第２の加締め型７２によって成形される。なお、本実施形態では、第１および第２のポンチ３１、３２の押圧面形状を円形状として、第１および第２の加締め部６１、６２の加締め形状を円形状としてある。 In this case, the first caulking portion 61 is arranged at the center position of the convex portion 21, the second caulking portion 62 is arranged at a predetermined interval on both sides of the first caulking portion 61, and The first caulking portion 61 is disposed outside the second caulking portion 62 with a predetermined interval. Of course, the first caulking portion 61 is formed by the first caulking die 71 shown in FIGS. 2 and 4, and the second caulking portion 62 is the second caulking portion shown in FIGS. 3 and 5. Molded by the mold 72. In the present embodiment, the pressing surface shapes of the first and second punches 31 and 32 are circular, and the crimping shapes of the first and second crimping portions 61 and 62 are circular.

従って、上述した第３の実施形態によれば、第１および第２の実施形態と同様の作用効果を奏するのはもちろんのこと、第１の加締め部６１と第２の加締め部６２とを交互に総計で５箇所配置したことにより、凹・凸形状部１１、２１の加締め強度を更に高めることができる。 Therefore, according to the above-described third embodiment, the first caulking portion 61 and the second caulking portion 62 can be obtained as well as the same effects as the first and second embodiments. By alternately arranging five in total, the caulking strength of the concave / convex shaped portions 11 and 21 can be further increased.

なお、本実施形態では、第１の加締め部６１および第２の加締め部６２の加締め形状が円形状となっているが、凸形状部２１の外周部２１ａが円弧状となっているため、第１および第２の加締め部２、４を効率良くレイアウトできる。また、相手側の金属板１に形成した凸形状部１１′にあっても、同様に第１および第２の加締め部６１、６２を成形することができる。 In addition, in this embodiment, although the crimping shape of the 1st crimping part 61 and the 2nd crimping part 62 is circular, the outer peripheral part 21a of the convex-shaped part 21 is circular arc shape. Therefore, the first and second crimping portions 2 and 4 can be laid out efficiently. Further, the first and second caulking portions 61 and 62 can be similarly formed even in the convex portion 11 ′ formed on the metal plate 1 on the other side.

図１３および図１４は、第３の実施形態の変形例を示し、第３の実施形態と同一構成部分に同一符号を付して述べるものとする。 13 and 14 show a modification of the third embodiment, and the same components as those in the third embodiment are denoted by the same reference numerals and described.

本変形例では、第３の実施形態と同様に、第１の加締め部６１と第２の加締め部６２とを、凸形状部２１の外周に沿って交互に総計で５箇所配置してあるが、とくに、本変形例が第３の実施形態と異なる点は、凹・凸形状部１１、２１および２１′、１１′が矩形状になっていることと、第１および第２の加締め部６１、６２が矩形状になっていることである。 In the present modification, as in the third embodiment, the first caulking portion 61 and the second caulking portion 62 are alternately arranged along the outer periphery of the convex portion 21 in a total of five locations. In particular, this modification differs from the third embodiment in that the concave / convex shaped portions 11, 21 and 21 ', 11' are rectangular, and the first and second additional portions are different. That is, the fastening portions 61 and 62 are rectangular.

すなわち、凸形状部２１、１１′は、先端部形状が矩形状に突出するとともに、凹形状部１１、２１′は、凸形状部２１、１１′の矩形状先端部に沿った形状で凹設されている。 That is, the convex-shaped portions 21 and 11 ′ protrude in a rectangular shape at the tip portion, and the concave-shaped portions 11 and 21 ′ are recessed in a shape along the rectangular tip portion of the convex-shaped portions 21 and 11 ′. Has been.

また、図１４に示すように、矩形状となる第１および第２の加締め部６１、６２は、凸形状部２１の先端辺ｆ′に沿って、中間に配置する第１の加締め部６１と、その両側に配置する第２の加締め部６２と、の３箇所が配置され、かつ、矩形状先端部の後端辺ｒの両側には、上記第２の加締め部６２に対応する位置に第１の加締め部６１が２箇所配置されている。 Further, as shown in FIG. 14, the first and second caulking portions 61 and 62 having a rectangular shape are arranged along the front end side f ′ of the convex portion 21. 61 and second caulking portions 62 arranged on both sides thereof are arranged, and on both sides of the rear end side r of the rectangular tip portion, the second caulking portion 62 corresponds. Two first caulking portions 61 are arranged at the positions to be operated.

従って、本変形例にあっても、１つの凸形状部２１に対して第１および第２の加締め部６１、６２を交互に５箇所配置したので、第３の実施形態と同様の作用効果を奏し、凹・凸形状部１１、２１の加締め強度を更に高めることができる。 Therefore, even in this modification, the first and second caulking portions 61 and 62 are alternately arranged at five locations for one convex portion 21, so the same effect as the third embodiment. Thus, the caulking strength of the concave / convex shaped portions 11 and 21 can be further increased.

また、本変形例では、矩形状に突出した凸形状部２１に、矩形状の第１および第２の加締め部６１、６２を配置したことにより、第１および第２の加締め部６１、６２を効率良くレイアウトできる。 Further, in the present modification, the first and second caulking portions 61, 62 are arranged by arranging the rectangular first and second caulking portions 61, 62 on the protruding convex portion 21. 62 can be laid out efficiently.

もちろん、本変形例にあっても、相手側の金属板１に形成した凸形状部１１′に、同様に第１および第２の加締め部６１、６２を成形することができる。 Of course, even in this modification, the first and second caulking portions 61 and 62 can be similarly formed on the convex portion 11 ′ formed on the mating metal plate 1.

ところで、本発明は前記各実施形態に例をとって説明したが、これら実施形態に限ることなく本発明の要旨を逸脱しない範囲で他の実施形態を各種採用することができる。たとえば、第１および第２の加締め部６１、６２は、総計で２箇所、３箇所および５箇所を配置した場合を示すが、もちろん、４箇所および６箇所以上の配置でもよく、とくに、交互に配置される第１および第２の加締め部６１、６２を総計で奇数箇所配置することが好ましい。 By the way, although this invention was demonstrated taking the example for each said embodiment, various other embodiment can be employ | adopted in the range which is not restricted to these embodiments and does not deviate from the summary of this invention. For example, the first and second caulking portions 61 and 62 show a case where a total of 2 places, 3 places and 5 places are arranged, but of course, 4 places and 6 places or more may be arranged. It is preferable to arrange the first and second caulking portions 61 and 62 arranged in an odd number in total.

１、２金属板
１ａ凹形状部の表面（表裏一方側の面）
１ｂ凹形状部の裏面（表裏他方側の面）
２ａ凸形状部の表面（表裏一方側の面）
２ｂ凸形状部の裏面（表裏他方側の面）
１１凹形状部
１１ａ凹形状部の内周部
２１凸形状部
２１ａ凸形状部の外周部
３ポンチ
３１第１のポンチ
３２第２のポンチ
４ダイ
４１第１のダイ
４２第２のダイ
５突起部
６加締め部
６１第１の加締め部
６２第２の加締め部
７加締め型
７１第１の加締め型
７２第２の加締め型
８凹部
８１第１の凹部
８２第２の凹部
１０金属板の接合製品
１００サスペンションメンバ（接合製品）
１１１、１１２、１１３、１１４ブランク材（金属板）
Ｅ逃げ部
Ｊ１、Ｊ２、Ｊ３、Ｊ４接合部 1, 2 Metal plate 1a Surface of concave part (surface on the front and back side)
1b The back of the concave part (surface on the other side)
2a Surface of convex part (front and back side)
2b Back surface of convex part (surface on the other side)
DESCRIPTION OF SYMBOLS 11 Concave-shaped part 11a Inner peripheral part of concave-shaped part 21 Convex-shaped part 21a Outer peripheral part of convex-shaped part 3 Punch 31 1st punch 32 2nd punch 4 Die 41 1st die 42 2nd die 5 Protrusion part 6 Caulking part 61 1st caulking part 62 2nd caulking part 7 caulking mold 71 1st caulking mold 72 2nd caulking mold 8 recessed part 81 1st recessed part 82 2nd recessed part 10 metal Joined product of plate 100 Suspension member (joined product)
111, 112, 113, 114 Blank material (metal plate)
E Escape portion J1, J2, J3, J4 Joint

Claims

In the method of joining metal plates, forming concave and convex shapes that engage each other at the ends of two metal plates, and caulking in a state where the respective concave and convex shapes are engaged,
Of the concave / convex shaped portions engaged with each other, one side of the convex shaped portion is pressed, and a protruding portion that engages with the inner peripheral portion of the other side of the concave shaped portion on the outer peripheral portion of the pressed convex shaped portion. A method for joining metal plates, comprising: a caulking step for providing a caulking portion to be molded, wherein the projecting portion enters a relief portion provided in a mold in a projecting direction when the projecting portion is formed.

The caulking step presses the surface on one side of the front and back of the convex part, and a protrusion that engages with the outer peripheral part of the pressed convex part on the inner peripheral part of the surface on the other side of the concave part Forming a first caulking portion by molding
Of the concave / convex shaped portions engaged with each other, press the surface on the other side of the convex shaped portion, and on the outer peripheral portion of the pressed convex shaped portion, on the inner peripheral portion of the surface on the front and back side of the concave shaped portion The method for joining metal plates according to claim 1, further comprising: forming a projection portion to be locked and providing a second caulking portion.

The metal plate joining method according to claim 1, wherein the relief portion is provided across both the convex shape portion and the concave shape portion.

A punch that presses one side surface of the convex portion with the concave and convex portions engaged with each other at the ends of the two metal plates, and the convex and concave portions are engaged. Protruding portions that are arranged on the side surface and receive the pressing force of the punch, and are locked to the outer peripheral portion of the convex shape portion on the inner peripheral portion of the other side surface of the convex shape portion due to the proximity pressurization with the punch. A crimping die having a die to be molded,
A metal plate joining apparatus, wherein a concave portion having a depth corresponding to the thickness of the protruding portion is formed in a peripheral portion where the die faces the punch.

A metal plate joining product, wherein the metal plate is joined by the joining method according to any one of claims 1 to 3.

The metal plate joined by the joining method according to any one of claims 1 to 3 is press-formed into a desired shape, and the caulking joint portion of the concave / convex shape portion is welded in the desired shape. The metal plate joining product according to claim 5.