JP2018069455A - Joining method of members - Google Patents

Joining method of members Download PDF

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JP2018069455A
JP2018069455A JP2016207791A JP2016207791A JP2018069455A JP 2018069455 A JP2018069455 A JP 2018069455A JP 2016207791 A JP2016207791 A JP 2016207791A JP 2016207791 A JP2016207791 A JP 2016207791A JP 2018069455 A JP2018069455 A JP 2018069455A
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self
joining
piercing rivet
piercing
laser
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英敬 服部
Hidetaka Hattori
英敬 服部
小林　裕之
Hiroyuki Kobayashi
裕之 小林
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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  • Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
  • Laser Beam Processing (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a joining method suitable for joining a metal member and a resin member, which can easily and surely improve joint strength and joint quality.SOLUTION: A joining method of members for joining a metal member 1 and a thermoplastic reinforced resin member 2, which are overlapped with each other, includes: a first process (A) of fastening, by self-piercing rivets 3, a joining portion where the metal member 1 and the thermoplastic resin member 2 are overlapped; and a second process (B) of irradiating the joining portion fastened by the self-piercing rivers 3 in the first process (A) with a laser beam 4 so as to melt the reinforced resin member 2 and weld the metal member 1 and the reinforced resin member 2. In the second process (B), the laser beam 4 is irradiated to an area including a fastening part fastened by the self-piercing rivets 3 in the joining portion.SELECTED DRAWING: Figure 1

Description

本発明は、金属と樹脂の接合方法に関する。   The present invention relates to a method for joining a metal and a resin.

従来より、例えば自動車の製作において、金属と樹脂のように異なる部材を接合する方法としては、ボルトによる締結や接着剤による接着等が用いられている。近年では、短時間で接合可能であるとともに、接合強度を比較的強く確保できるセルフピアスリベットによる接合方法が開発されている。
また、特許文献１では、セルフピアスリベットにより樹脂部材同士を接合するとともに、当該接合部分を加熱して樹脂部材を溶融させながら加圧し、接合強度を向上させる方法が開示されている。 Conventionally, for example, in the manufacture of automobiles, as a method of joining different members such as metal and resin, fastening with bolts, adhesion with an adhesive, or the like has been used. In recent years, a bonding method using a self-piercing rivet has been developed that can be bonded in a short time and can ensure a relatively high bonding strength.
Further, Patent Document 1 discloses a method in which resin members are bonded together by self-piercing rivets, and the bonding portion is heated and pressurized while melting the resin member to improve the bonding strength.

特許第５４４７６６４号公報Japanese Patent No. 5447664

ところで、２つの部材を比較的長い区間で接合する場合、上記のようにセルフピアスリベット（またはボルトなどの機械締結）を用いると、複数の箇所でセルフピアスリベットにより締結しなければならず、セルフピアスリベット自体の重量により重量増加を招くといった問題点がある。
また、金属部材と樹脂部材とをセルフピアスリベットによって接合した際に、樹脂部材にクラックが入る場合があり、程度によっては、接合強度が低下して接合品質が悪くなる虞がある。 By the way, when two members are joined in a relatively long section, if self-piercing rivets (or mechanical fastening such as bolts) are used as described above, they must be fastened by self-piercing rivets at a plurality of locations. There is a problem in that the weight of the earring rivet itself increases.
Further, when the metal member and the resin member are joined by the self-piercing rivet, the resin member may be cracked, and depending on the degree, the joining strength may be lowered and the joining quality may be deteriorated.

本発明の目的は、容易かつ確実に接合強度および接合品質を向上させることができる、金属部材と樹脂部材との接合に適した接合方法を提供することにある。   The objective of this invention is providing the joining method suitable for joining of a metal member and a resin member which can improve joining strength and joining quality easily and reliably.

上記目的を達成するために請求項１の部材の接合方法は、互いに重ね合わせた金属部材と熱可塑性を有する樹脂部材とを接合する部材の接合方法であって、前記金属部材と前記樹脂部材とを重ね合わせた接合箇所をセルフピアスリベットにより締結する第１の工程と、前記第１の工程でセルフピアスリベットにより締結された前記接合箇所にレーザーを照射して前記樹脂部材を溶融させて前記金属部材と前記樹脂部材とを溶着させる第２の工程とを有し、前記第２の工程において、前記接合箇所の前記セルフピアスリベットにより締結された締結部を含む領域に前記レーザーを照射することを特徴とする。   In order to achieve the above object, the member joining method according to claim 1 is a member joining method for joining a metal member and a resin member having thermoplasticity, which are superposed on each other, the metal member and the resin member. A first step of fastening the jointed portion with the self-piercing rivet, and irradiating a laser to the jointed portion fastened by the self-piercing rivet in the first step to melt the resin member, A second step of welding the member and the resin member, and in the second step, irradiating the laser to a region including a fastening portion fastened by the self-piercing rivet at the joint location. Features.

また、好ましくは、前記第１の工程において、所定の間隔をおいて並んだ複数の位置で前記接合箇所を前記セルフピアスリベットにより締結し、前記第２の工程において、前記接合箇所の前記セルフピアスリベットによる締結部および前記セルフピアスリベット間の領域に前記レーザーを照射するとよい。
また、好ましくは、前記第２の工程において、前記セルフピアスリベットによる締結部と前記セルフピアスリベット間の領域の全体に亘って線状に繋がるように前記レーザーを連続的に照射するとよい。 Preferably, in the first step, the joint portions are fastened by the self-piercing rivets at a plurality of positions arranged at predetermined intervals, and in the second step, the self-piercing of the joint portions is performed. The laser may be irradiated to a region between a fastening portion by rivets and the self-piercing rivet.
Preferably, in the second step, the laser is continuously irradiated so as to be connected linearly over the entire region between the fastening portion by the self-piercing rivet and the self-piercing rivet.

また、好ましくは、前記第１の工程において、前記セルフピアスリベットを前記樹脂部材側から打ち込み、前記第２の工程において、前記レーザーを前記金属部材側から照射するとよい。
また、好ましくは、前記第１の工程において、前記セルフピアスリベットを前記金属部材側から打ち込み、前記第２の工程において、前記レーザーを前記金属部材側から照射するとよい。 Preferably, in the first step, the self-piercing rivet is driven from the resin member side, and in the second step, the laser is irradiated from the metal member side.
Preferably, in the first step, the self-piercing rivet is driven from the metal member side, and in the second step, the laser is irradiated from the metal member side.

また、好ましくは、前記第２の工程において、前記セルフピアスリベットによる締結部と前記セルフピアスリベットの間の領域とで、前記接合箇所に照射する前記レーザーの出力または単位面積当たりの照射時間を変更させるとよい。   Preferably, in the second step, the output of the laser or the irradiation time per unit area is changed between the fastening portion by the self-piercing rivet and the region between the self-piercing rivets. It is good to let them.

本発明の部材の接合方法によれば、金属部材と樹脂部材との接合箇所においてセルフピアスリベットにより締結した後、セルフピアスリベットによる締結部とその周囲を含む領域をレーザーにより溶融させて溶着するので、容易かつ確実に接合強度を向上させることができる。
しかもセルフピアスリベットにより締結する際に、樹脂部材にクラックが発生したとしても、レーザーの照射によりクラックを補修することができるので、セルフピアスリベットによる締結部の強度および品質を向上させることができる。 According to the member joining method of the present invention, since the metal member and the resin member are fastened by the self-piercing rivet at the joining portion, the fastening portion by the self-piercing rivet and the region including the periphery thereof are melted and welded by the laser. Thus, the bonding strength can be improved easily and reliably.
In addition, even when a crack is generated in the resin member when fastening with the self-piercing rivet, the crack can be repaired by laser irradiation, so that the strength and quality of the fastening portion by the self-piercing rivet can be improved.

また、セルフピアスリベットにより締結してからレーザーにより溶着させるので、セルフピアスリベットによる締結によって金属部材と樹脂部材との密着度合いを高めてからレーザーによって溶着させることができるため、溶着不良を起こしにくく溶着による接合品質を向上させることができるので、結果、接合強度を向上させることができる。
また、例えば金属材料と樹脂材料との間の溶着域が破壊されたとしても、セルフピアスリベットが、クラックの進展を抑制するクラックアレスター効果を得ることができる。
以上、金属材料と樹脂材料との接合箇所における接合強度および接合品質の向上を図ることができる。 Also, since it is welded by laser after fastening by self-piercing rivet, it can be welded by laser after increasing the adhesion degree of metal member and resin member by fastening by self-piercing rivet, so it is difficult to cause poor welding As a result, the bonding quality can be improved, and as a result, the bonding strength can be improved.
For example, even if the weld zone between the metal material and the resin material is destroyed, the self-piercing rivet can obtain a crack arrester effect that suppresses the progress of cracks.
As described above, it is possible to improve the bonding strength and bonding quality at the bonding portion between the metal material and the resin material.

本発明の一実施形態に係る金属部材と強化樹脂部材との第１の接合方法を説明する説明図である。It is explanatory drawing explaining the 1st joining method of the metal member and reinforced resin member which concern on one Embodiment of this invention. 第１の接合方法において補修効果を高めた状態を示すセルフピアスリベット周りの断面図である。It is sectional drawing of the surroundings of the self-piercing rivet which shows the state which improved the repair effect in the 1st joining method. 本発明の一実施形態に係る金属部材と強化樹脂部材との第２の接合方法を説明する説明図である。It is explanatory drawing explaining the 2nd joining method of the metal member and reinforced resin member which concern on one Embodiment of this invention.

以下、本発明の実施の形態を図面に基づき説明する。
本発明に係る接合方法は、金属部材と熱可塑性を有する樹脂部材との接合方法である。以下の実施形態では、板状の金属部材１及び繊維強化熱可塑性樹脂部材（以下、強化樹脂部材２という、本発明の樹脂部材に該当する）を重ね合わせた接合箇所を、セルフピアスリベット３による締結及びレーザー４による溶着によって接合している。
以下、本発明の第１の実施形態である第１の接合方法について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The joining method according to the present invention is a joining method between a metal member and a thermoplastic resin member. In the following embodiments, a joint portion where a plate-like metal member 1 and a fiber reinforced thermoplastic resin member (hereinafter referred to as a reinforced resin member 2, which corresponds to the resin member of the present invention) are overlapped by the self-piercing rivet 3. Joining is performed by fastening and welding by the laser 4.
Hereinafter, the first bonding method according to the first embodiment of the present invention will be described.

図１は、本発明の第１の実施形態に係る金属部材１と強化樹脂部材２との第１の接合方法を説明する説明図である。図１は、接合箇所における縦断面図であり、（Ａ）は第１工程、（Ｂ）は第２工程、（Ｃ）は接合後の状態を示す。図２は、第１の接合方法において補修効果を高めた状態を示すセルフピアスリベット３周りの断面図である。なお、図１、２中の斜線部がレーザー４による溶着域である。   FIG. 1 is an explanatory view illustrating a first method for joining a metal member 1 and a reinforced resin member 2 according to the first embodiment of the present invention. FIG. 1 is a longitudinal cross-sectional view at a joining location, where (A) shows a first step, (B) shows a second step, and (C) shows a state after joining. FIG. 2 is a cross-sectional view around the self-piercing rivet 3 showing a state in which the repair effect is enhanced in the first joining method. The hatched area in FIGS. 1 and 2 is a welding region by the laser 4.

第１の接合方法では、図１（Ａ）に示すように、始めに一方向（図１中の左右方向）に連続する接合箇所において、所定の間隔をおいて並んだ複数の位置でセルフピアスリベット３を打ち込み、セルフピアスリベット３により金属部材１及び強化樹脂部材２を締結する。
セルフピアスリベット３は、例えば特許文献１（特許第５４４７６６４号公報）に記載されているように公知であり、詳細な説明は省略するが、円板状の頭部１０と、頭部１０から延出された脚部１１を有している。セルフピアスリベット３による締結は、図１（Ａ）の右側に示すように、まず金属部材１と強化樹脂部材２とを重ねた接合箇所においてセルフピアスリベット３によって締結する位置を筒状のレシーバ１２とダイ１３によって挟む。このとき、ダイ１３側に金属部材１を配置する。レシーバ１２内には脚部１１を強化樹脂部材２側に向けてセルフピアスリベット３が装填され、レシーバ１２内を移動するパンチ１４によってセルフピアスリベット３の頭部１０を押して、脚部１１を強化樹脂部材２に圧入する。これにより、セルフピアスリベット３の脚部１１は、強化樹脂部材２を貫通し、金属部材１内でダイ１３の底面に沿って外側に変形し、金属部材１と強化樹脂部材２とを締結する（第１の工程）。 In the first joining method, as shown in FIG. 1 (A), self-piercing is performed at a plurality of positions arranged at predetermined intervals in a joining portion that is initially continuous in one direction (left-right direction in FIG. 1). The rivet 3 is driven and the metal member 1 and the reinforced resin member 2 are fastened by the self-piercing rivet 3.
The self-piercing rivet 3 is known as described in, for example, Patent Document 1 (Japanese Patent No. 5447664), and detailed description thereof is omitted. However, the disk-shaped head 10 and the head 10 extend from the head 10. It has a protruding leg 11. As shown on the right side of FIG. 1A, the fastening by the self-piercing rivet 3 is performed at the position where the metal member 1 and the reinforced resin member 2 are first fastened by the self-piercing rivet 3 at the cylindrical receiver 12. And sandwiched by the die 13. At this time, the metal member 1 is disposed on the die 13 side. The self-piercing rivet 3 is loaded in the receiver 12 with the leg portion 11 facing the reinforced resin member 2, and the leg portion 11 is reinforced by pushing the head 10 of the self-piercing rivet 3 with the punch 14 moving in the receiver 12. Press fit into the resin member 2. Thereby, the leg part 11 of the self-piercing rivet 3 penetrates the reinforced resin member 2, is deformed outward along the bottom surface of the die 13 in the metal member 1, and fastens the metal member 1 and the reinforced resin member 2. (First step).

次に、図１（Ｂ）に示すように、接合箇所に金属部材１側からレーザー４を照射しつつ、レーザー４の照射位置を移動する。レーザー４の照射は、例えば図中の左から右方向に向かって連続的に行なわれ、セルフピアスリベット３により締結された締結部とその周囲を含むように照射される。より具体的には、セルフピアスリベット３による締結部と、セルフピアスリベット３（締結部）とセルフピアスリベット３（締結部）の間（以降セルフピアスリベット３間）の領域の全体に亘って、セルフピアスリベット３（締結部）とセルフピアスリベット３（締結部）とを線状に繋ぐように連続して照射される。レーザー４は、金属部材１で熱に変換される。そして、レーザー４によって発生した熱によって強化樹脂部材２の金属部材１との接合面が溶融され、溶融された強化樹脂部材２が金属部材１の表面の凹凸等に入り込み冷却固化することで、金属部材１と強化樹脂部材２とが接合箇所で溶着される（第２の工程）。なお、レーザー４の照射により、金属部材１だけでなくセルフピアスリベット３も発熱されるので、セルフピアスリベット３の周りの強化樹脂部材２が溶融され、セルフピアスリベット３と強化樹脂部材２とが溶着される。   Next, as shown in FIG. 1 (B), the irradiation position of the laser 4 is moved while irradiating the joining portion with the laser 4 from the metal member 1 side. The laser 4 is irradiated continuously, for example, from the left to the right in the drawing, and includes a fastening portion fastened by the self-piercing rivet 3 and its periphery. More specifically, over the entire region between the fastening portion by the self-piercing rivet 3, and between the self-piercing rivet 3 (fastening portion) and the self-piercing rivet 3 (fastening portion) (hereinafter, between the self-piercing rivets 3), The self-piercing rivet 3 (fastening portion) and the self-piercing rivet 3 (fastening portion) are continuously irradiated so as to be connected linearly. The laser 4 is converted into heat by the metal member 1. And the joining surface with the metal member 1 of the reinforced resin member 2 is melted by the heat generated by the laser 4, and the molten reinforced resin member 2 enters the irregularities on the surface of the metal member 1 and is cooled and solidified. The member 1 and the reinforced resin member 2 are welded at the joining portion (second step). The laser 4 irradiates not only the metal member 1 but also the self-piercing rivet 3 so that the reinforced resin member 2 around the self-piercing rivet 3 is melted, and the self-piercing rivet 3 and the reinforced resin member 2 are separated. Welded.

なお、上記の第２の工程では、複数のセルフピアスリベット３による締結部とともにセルフピアスリベット３間を繋ぐようにレーザー４を連続的に照射して溶着させているが、セルフピアスリベット３間の領域は、必ずしも連続的に溶着（照射）させる必要はなく、例えば、間欠的に溶着されていてもよいし、セルフピアスリベット３間の中間部のみを溶着するような構成にしてもよい。   In the second step, the laser 4 is continuously irradiated and welded so as to connect the self-piercing rivets 3 together with the fastening portions of the plurality of self-piercing rivets 3. The region does not necessarily have to be continuously welded (irradiated). For example, the region may be welded intermittently, or may be configured such that only the intermediate portion between the self-piercing rivets 3 is welded.

そして、接合箇所へのレーザー照射を完了して、冷却することで、図１（Ｃ）に示すように、金属部材１と強化樹脂部材２とが接合される。本方法では、金属部材１と強化樹脂部材２との溶着域は、セルフピアスリベット３間だけでなく、セルフピアスリベット３による締結部においても溶着される。
以上のように、第１の接合方法では、セルフピアスリベット３による締結の後にレーザー４により溶着することで、容易かつ確実に金属部材１と強化樹脂部材２とを接合することが可能となり、セルフピアスリベット３だけで接合する場合よりも、接合強度を向上させることが可能となる。また、複数のセルフピアスリベット３で締結する場合には、全体の接合強度を低下させずにセルフピアスリベット３の締結位置の間隔を広げることができる。これにより、セルフピアスリベット３の締結個数を少なくすることができ、接合箇所における重量を低減させることができる。また、セルフピアスリベット３により締結してからレーザー４により溶着させるので、セルフピアスリベット３による締結によって金属部材１と強化樹脂部材２との密着度合いを高めてからレーザー４によって溶着させることができるので、溶着不良を起こしにくく、レーザー４による溶着の品質を安定させることができ、その結果、接合強度を向上させることができる。 Then, by completing the laser irradiation to the joining portion and cooling, the metal member 1 and the reinforced resin member 2 are joined as shown in FIG. In this method, the welding region between the metal member 1 and the reinforced resin member 2 is welded not only between the self-piercing rivets 3 but also at a fastening portion by the self-piercing rivets 3.
As described above, in the first joining method, the metal member 1 and the reinforced resin member 2 can be easily and surely joined by welding with the laser 4 after the fastening with the self-piercing rivet 3. The joining strength can be improved as compared with the case of joining with the pierce rivet 3 alone. Further, when fastening with a plurality of self-piercing rivets 3, it is possible to widen the interval between the fastening positions of the self-piercing rivets 3 without reducing the overall bonding strength. Thereby, the number of fastening of the self-piercing rivet 3 can be reduced, and the weight at the joining location can be reduced. Further, since it is welded by the laser 4 after being fastened by the self-piercing rivet 3, it can be welded by the laser 4 after increasing the degree of adhesion between the metal member 1 and the reinforced resin member 2 by fastening by the self-piercing rivet 3. It is difficult to cause poor welding, and the quality of welding by the laser 4 can be stabilized, and as a result, the bonding strength can be improved.

また、セルフピアスリベット３の締結により、締結場所の強化樹脂部材２にクラックが発生する可能性があるが、本接合方法では、レーザー４の照射により金属部材１とともにセルフピアスリベット３も発熱されるので、セルフピアスリベット３の周りの強化樹脂部材２も溶融され、強化樹脂部材２に発生したクラックをなくすように補修することができる。また、例えば、金属部材１と強化樹脂部材２の間の溶着域が破壊され、クラックが発生したとしても、セルフピアスリベット３により、クラックの進展を抑制するクラックアレスター効果を得ることができる。   In addition, the self-piercing rivet 3 may be cracked in the reinforced resin member 2 at the fastening location by the fastening of the self-piercing rivet 3. Therefore, the reinforced resin member 2 around the self-piercing rivet 3 is also melted and can be repaired so as to eliminate cracks generated in the reinforced resin member 2. Further, for example, even if the welded region between the metal member 1 and the reinforced resin member 2 is destroyed and a crack is generated, the crack arrester effect that suppresses the progress of the crack can be obtained by the self-piercing rivet 3.

なお、レーザー４の照射を行なう際に、セルフピアスリベット３による締結部においてレーザー出力を高めたり、単位面積当たりの照射時間を長くしたりするようにしてもよい。これにより、図２に示すように、セルフピアスリベット３による締結部において、斜線部で示す溶着域が大きくなり、クラックの補修効果を高めることができる。
以下、本発明の第２の実施形態である第２の接合方法について説明する。 In addition, when irradiating the laser 4, you may make it raise a laser output in the fastening part by the self-piercing rivet 3, or lengthen the irradiation time per unit area. Thereby, as shown in FIG. 2, in the fastening part by the self-piercing rivet 3, the welded area indicated by the hatched part is increased, and the crack repair effect can be enhanced.
Hereinafter, the second joining method according to the second embodiment of the present invention will be described.

図３は、本発明の第２の実施形態に係る金属部材１と強化樹脂部材２との第２の接合方法を説明する説明図である。図３は、接合箇所の縦断面図であり、（Ａ）は第１工程、（Ｂ）は第２工程、（Ｃ）は接合後の状態を示す。なお、図３中の斜線部がレーザー４による溶着域である。
第２の接合方法では、第１の接合方法と同様に、始めに接合箇所の所定の間隔をおいて並んだ複数の位置にセルフピアスリベット３を打ち込んで金属部材１と強化樹脂部材２とを締結する。しかし、第２の接合方法では、金属部材１と強化樹脂部材２とを重ねてレシーバ１２とダイ１３によって挟む際に、図３（Ａ）に示すように、ダイ１３側が強化樹脂部材２となるように配置する。これにより、セルフピアスリベット３の脚部１１は、金属部材１側から打ち込まれ、強化樹脂部材２内で外側に変形して、金属部材１と強化樹脂部材２とを締結する（第１の工程）。 FIG. 3 is an explanatory view illustrating a second joining method between the metal member 1 and the reinforced resin member 2 according to the second embodiment of the present invention. FIG. 3 is a longitudinal cross-sectional view of the joining portion, where (A) shows the first step, (B) shows the second step, and (C) shows the state after joining. In addition, the shaded area in FIG.
In the second joining method, similar to the first joining method, first, the self-piercing rivets 3 are driven into a plurality of positions arranged at predetermined intervals of the joining locations, and the metal member 1 and the reinforced resin member 2 are joined. Conclude. However, in the second joining method, when the metal member 1 and the reinforced resin member 2 are overlapped and sandwiched between the receiver 12 and the die 13, the die 13 side becomes the reinforced resin member 2 as shown in FIG. Arrange as follows. As a result, the legs 11 of the self-piercing rivet 3 are driven from the metal member 1 side, deformed outward in the reinforced resin member 2, and fasten the metal member 1 and the reinforced resin member 2 (first step). ).

次に、図３（Ｂ）に示すように、接合箇所に金属部材１側からレーザー４を照射しつつ、照射位置を移動する。このとき、セルフピアスリベット３による締結部と、セルフピアスリベット３間の領域にレーザー４を連続的に照射するが、金属部材１側にセルフピアスリベット３の頭部１０が位置するので、セルフピアスリベット３による締結部においては、セルフピアスリベット３の頭部１０側からレーザーを照射することになる（第２の工程）。   Next, as shown in FIG. 3 (B), the irradiation position is moved while irradiating the joining portion with the laser 4 from the metal member 1 side. At this time, the laser 4 is continuously irradiated to the fastening portion by the self-piercing rivet 3 and the region between the self-piercing rivets 3, but the head 10 of the self-piercing rivet 3 is located on the metal member 1 side. In the fastening part by the rivet 3, the laser is irradiated from the head 10 side of the self-piercing rivet 3 (second step).

したがって、セルフピアスリベット３による締結部では、金属部材１及びセルフピアスリベット３を介して熱がセルフピアスリベット３の脚部１１の周囲の強化樹脂部材２にも伝達されて溶融される。
そして、レーザー４の照射が終了してから冷却固化することで、図３（Ｃ）に示すように、金属部材１およびセルフピアスリベット３と強化樹脂部材２とが接合箇所で溶着される。本方法では、セルフピアスリベット３による締結によって、脚部１１の周囲の強化樹脂部材２にはクラックが発生し易くなるが、レーザー４がセルフピアスリベット３の頭部１０側から照射され、セルフピアスリベット３がより確実に加熱されるので、セルフピアスリベット３の周囲の強化樹脂部材２が溶融し易くなり、クラックがより確実に補修され、十分な接合強度を確保することができる。 Therefore, in the fastening portion by the self-piercing rivet 3, heat is transmitted to the reinforced resin member 2 around the leg portion 11 of the self-piercing rivet 3 through the metal member 1 and the self-piercing rivet 3 and is melted.
Then, by cooling and solidifying after the irradiation of the laser 4 is completed, the metal member 1, the self-piercing rivet 3, and the reinforced resin member 2 are welded at the joining portion as shown in FIG. In this method, the fastening with the self-piercing rivet 3 makes it easy for cracks to occur in the reinforced resin member 2 around the leg 11, but the laser 4 is irradiated from the head 10 side of the self-piercing rivet 3, and the self-piercing Since the rivet 3 is heated more reliably, the reinforced resin member 2 around the self-piercing rivet 3 is easily melted, cracks are more reliably repaired, and sufficient bonding strength can be ensured.

以上のように、本方法では、セルフピアスリベット３を強化樹脂部材２側から打ち込む第１の接合方法とは反対に金属部材１側から打ち込むが、セルフピアスリベット３による締結とレーザー４による溶着によって、第１の接合方法と同様に、複数のセルフピアスリベット３で締結する場合、セルフピアスリベット３による締結箇所を減らして重量を低減しつつ接合強度を確保することができる。また、第１の接合方法と同様に、セルフピアスリベット３の締結部でのクラックを補修するとともに、セルフピアスリベット３によりクラックアレスター効果を得ることができるので、接合強度および接合品質を向上させることができる。   As described above, in this method, the self-piercing rivet 3 is driven from the metal member 1 side as opposed to the first joining method of driving from the reinforced resin member 2 side, but by the fastening by the self-piercing rivet 3 and the welding by the laser 4 Similarly to the first joining method, when fastening with a plurality of self-piercing rivets 3, it is possible to secure the joining strength while reducing the weight by reducing the number of fastening points by the self-piercing rivets 3. Further, as in the first joining method, cracks at the fastening portion of the self-piercing rivet 3 are repaired, and a crack arrester effect can be obtained by the self-piercing rivet 3, thereby improving the joining strength and joining quality. Can do.

そして、第２の接合方法は、第１の接合方法とは反対に金属部材１側からセルフピアスリベット３の打ち込みが行なわれるので、例えば周囲の他の部品や機器との干渉により、第１の接合方法ではセルフピアスリベット３の締結が困難である場合に接合を可能にすることができ、本発明の適用範囲を広げることができる。
なお、第２の接合方法においても、セルフピアスリベット３の締結部において、レーザー４の出力や単位面積当たりの照射時間を増加して、十分に脚部１１の周囲の強化樹脂部材２を溶融させ、クラックの補修効果を高めてもよい。 In the second joining method, since the self-piercing rivet 3 is driven from the metal member 1 side as opposed to the first joining method, the first joining method is performed, for example, by interference with other surrounding parts and devices. In the joining method, joining is possible when it is difficult to fasten the self-piercing rivet 3, and the application range of the present invention can be expanded.
Also in the second joining method, the reinforced resin member 2 around the legs 11 is sufficiently melted by increasing the output of the laser 4 and the irradiation time per unit area at the fastening portion of the self-piercing rivet 3. The crack repair effect may be enhanced.

以上、上記本発明に係る第１、第２の実施形態によれば、このように本発明の接合方法によれば、金属部材と樹脂部材との接合において、容易かつ確実に接合強度および接合品質を向上させることができる。
以上で発明の実施形態の説明を終えるが、本発明の形態は上記実施形態に限定されるものではない。 As described above, according to the first and second embodiments of the present invention described above, according to the bonding method of the present invention, the bonding strength and bonding quality can be easily and reliably bonded between the metal member and the resin member. Can be improved.
Although the description of the embodiment of the invention is finished as above, the embodiment of the present invention is not limited to the above embodiment.

例えば、上記実施形態では、セルフピアスリベット３による複数の締結部と、複数のセルフピアスリベット３間の領域の全体に亘って、連続的にレーザー４を照射しているが、例えばセルフピアスリベット３による複数の締結部のみレーザー４を照射してから、セルフピアスリベット３間の領域にレーザー４を照射して溶着させてもよい。あるいは、セルフピアスリベット３による複数の締結部のみレーザー４を照射した後に、締結部とセルフピアスリベット３間の領域の全体に亘って連続してレーザー４を照射してもよいし、締結部とセルフピアスリベット３間の領域の全体に亘って連続してレーザー４を照射した後に、締結部のみレーザー４を照射してもよい。このように、セルフピアスリベット３による締結部及びセルフピアスリベット３間の連続照射と、締結部のみの照射とを行なうことで、締結部において二回照射されることになり、上記のように締結部においてレーザー４の出力や単位面積当たりの照射時間を増加した場合と同様に、締結部におけるクラックの補修効果を高めることができる。   For example, in the above-described embodiment, the laser 4 is continuously irradiated over a plurality of fastening portions by the self-piercing rivets 3 and the entire region between the plurality of self-piercing rivets 3. Alternatively, the laser 4 may be irradiated to only the plurality of fastening portions according to the above, and the region between the self-piercing rivets 3 may be irradiated and welded. Or after irradiating the laser 4 only to the several fastening part by the self-piercing rivet 3, you may irradiate the laser 4 continuously over the whole area | region between a fastening part and the self-piercing rivet 3, or a fastening part and After irradiating the laser 4 continuously over the entire region between the self-piercing rivets 3, only the fastening portion may be irradiated with the laser 4. In this way, by performing continuous irradiation between the fastening portion and the self-piercing rivet 3 by the self-piercing rivet 3 and irradiation of only the fastening portion, the fastening portion is irradiated twice, and fastening is performed as described above. Similarly to the case where the output of the laser 4 and the irradiation time per unit area are increased in the portion, the effect of repairing cracks in the fastening portion can be enhanced.

また、強化樹脂部材２が導電性を有する場合には、電食を防止するために金属部材１と強化樹脂部材２との間に絶縁体を備えるとよい。金属部材１と強化樹脂部材２との間に絶縁体を備えるには、例えば金属部材１と強化樹脂部材２との当接面の強化樹脂部材２側にガラス繊維を含む樹脂層（絶縁体）を前もって形成させてから重ね合わせるようにすればよい。好ましくは、ガラス繊維を含む樹脂層（絶縁体）の樹脂は強化樹脂部材２の樹脂と同一であることが望ましい。更にガラス繊維を含む樹脂層（絶縁体）を強化樹脂部材２の成形と同時若しくは同工程内で行うことが好ましい。また、金属部材１側にガラス繊維を含む樹脂層（絶縁体）を事前に貼り付けても良い。勿論、上記の例に限らず、金属部材１と強化樹脂部材２の少なくとも一方に絶縁体を備える方法を用いることができる。このように、絶縁体を挟んだ金属部材１と強化樹脂部材２においても、上記実施形態のようにセルフピアスリベット３による締結の後にレーザー４によって溶着させることで、容易に接合強度の優れた接合が可能となる。   Moreover, when the reinforced resin member 2 has conductivity, an insulator may be provided between the metal member 1 and the reinforced resin member 2 in order to prevent electrolytic corrosion. In order to provide an insulator between the metal member 1 and the reinforced resin member 2, for example, a resin layer (insulator) containing glass fibers on the reinforced resin member 2 side of the contact surface between the metal member 1 and the reinforced resin member 2. May be formed in advance and then overlapped. Preferably, the resin of the resin layer (insulator) containing glass fiber is the same as the resin of the reinforced resin member 2. Furthermore, it is preferable to perform the resin layer (insulator) containing glass fiber simultaneously with the molding of the reinforced resin member 2 or in the same process. Further, a resin layer (insulator) containing glass fibers may be attached to the metal member 1 side in advance. Of course, the method is not limited to the above example, and a method of providing an insulator on at least one of the metal member 1 and the reinforced resin member 2 can be used. In this way, the metal member 1 and the reinforced resin member 2 sandwiching the insulator are also easily bonded with excellent bonding strength by being welded by the laser 4 after being fastened by the self-piercing rivet 3 as in the above embodiment. Is possible.

また上記実施形態では、金属部材１と強化樹脂部材２を例としたが、本発明は熱可塑性を有する樹脂部材全般に適用可能なものであり、例えば、強化材料を含まない熱可塑性樹脂として、PP、PE、PC、ABS、PA、PMMA、PET、PPS、PES、PEEK、PEKK、PEK、PEI、PI等を用いることができる。また、粒状強化材料、例えば、タルク等を添加した樹脂部材にも用いることができる。また、強化樹脂材料には強化繊維材料として、炭素繊維、ガラス繊維、アラミド繊維、炭化ケイ素繊維、セルロースナノファイバー等を用いることができる。以上にあげた例は樹脂部材の一部であって、例にない樹脂部材も用いることができる。   Moreover, in the said embodiment, although the metal member 1 and the reinforced resin member 2 were made into the example, this invention is applicable to the resin member which has thermoplasticity in general, For example, as a thermoplastic resin which does not contain a reinforced material, PP, PE, PC, ABS, PA, PMMA, PET, PPS, PES, PEEK, PEKK, PEK, PEI, PI, etc. can be used. Moreover, it can be used also for the resin member which added granular reinforcement material, for example, talc etc. Moreover, carbon fiber, glass fiber, aramid fiber, silicon carbide fiber, cellulose nanofiber, etc. can be used for the reinforced resin material as the reinforced fiber material. The example given above is a part of the resin member, and a resin member not shown in the example can also be used.

また上記実施形態での金属部材１とは、例えば、非めっき鋼板、亜鉛めっき鋼板、アルミめっき鋼板、ホットスタンプ鋼板、ステンレス鋼板等に代表される鉄鋼材料、アルミ、マグネシウム、チタン、ニッケル等の非鉄金属材料及びその合金材料が挙げられる。以上挙げた例は金属部材の一部であって、例にない金属部材も用いることができる。
また、セルフピアスリベット３の締結やレーザー４による溶着に関する詳細については、適宜変更可能である。本発明は、自動車以外にも金属部材と樹脂部材との接合箇所に広く適用することができる。 The metal member 1 in the above embodiment is, for example, a non-ferrous material such as a non-plated steel plate, a galvanized steel plate, an aluminum-plated steel plate, a hot stamped steel plate, a stainless steel plate, or the like, or aluminum, magnesium, titanium, nickel, etc. A metal material and its alloy material are mentioned. The example given above is a part of the metal member, and a metal member not shown in the example can also be used.
Further, details regarding the fastening of the self-piercing rivet 3 and the welding by the laser 4 can be appropriately changed. The present invention can be widely applied to a joint portion between a metal member and a resin member in addition to an automobile.

１ 金属部材
２ 強化樹脂部材（樹脂部材）
３ セルフピアスリベット
４ レーザー 1 Metal member 2 Reinforced resin member (resin member)
3 Self-piercing rivet 4 Laser

Claims (6)

互いに重ね合わせた金属部材と熱可塑性を有する樹脂部材とを接合する部材の接合方法であって、
前記金属部材と前記樹脂部材とを重ね合わせた接合箇所をセルフピアスリベットにより締結する第１の工程と、前記第１の工程でセルフピアスリベットにより締結された前記接合箇所にレーザーを照射して前記樹脂部材を溶融させて前記金属部材と前記樹脂部材とを溶着させる第２の工程とを有し、
前記第２の工程において、前記接合箇所の前記セルフピアスリベットにより締結された締結部を含む領域に前記レーザーを照射する
ことを特徴とする部材の接合方法。 A joining method of members for joining metal members and thermoplastic resin members that are superposed on each other,
A first step of fastening a joint portion where the metal member and the resin member are overlapped with each other by a self-piercing rivet; and a laser irradiation to the joint portion fastened by the self-piercing rivet in the first step, and A second step of melting the resin member and welding the metal member and the resin member;
In the second step, the member is irradiated with the laser to a region including a fastening portion fastened by the self-piercing rivet at the joining portion. 前記第１の工程において、所定の間隔をおいて並んだ複数の位置で前記接合箇所を前記セルフピアスリベットにより締結し、
前記第２の工程において、前記接合箇所の前記セルフピアスリベットによる締結部および前記セルフピアスリベット間の領域に前記レーザーを照射する
ことを特徴とする請求項１に記載の部材の接合方法。 In the first step, the joints are fastened by the self-piercing rivets at a plurality of positions arranged at predetermined intervals,
2. The method for joining members according to claim 1, wherein, in the second step, the laser is irradiated to a fastening portion by the self-piercing rivet at the joining portion and a region between the self-piercing rivets. 前記第２の工程において、前記セルフピアスリベットによる締結部と前記セルフピアスリベット間の領域の全体に亘って線状に繋がるように前記レーザーを連続的に照射する
ことを特徴とする請求項２に記載の部材の接合方法。 The said 2nd process WHEREIN: The said laser is continuously irradiated so that it may connect linearly over the whole area | region between the fastening part by the said self-piercing rivet and the said self-piercing rivet. The joining method of the member of description. 前記第１の工程において、前記セルフピアスリベットを前記樹脂部材側から打ち込み、
前記第２の工程において、前記レーザーを前記金属部材側から照射することを特徴とする請求項１から３のいずれか１項に記載の部材の接合方法。 In the first step, the self-piercing rivet is driven from the resin member side,
4. The member joining method according to claim 1, wherein in the second step, the laser is irradiated from the metal member side. 5. 前記第１の工程において、前記セルフピアスリベットを前記金属部材側から打ち込み、
前記第２の工程において、前記レーザーを前記金属部材側から照射することを特徴とする請求項１から３のいずれか１項に記載の部材の接合方法。 In the first step, the self-piercing rivet is driven from the metal member side,
4. The member joining method according to claim 1, wherein in the second step, the laser is irradiated from the metal member side. 5. 前記第２の工程において、前記セルフピアスリベットによる締結部と前記セルフピアスリベットの間の領域とで、前記接合箇所に照射する前記レーザーの出力または単位面積当たりの照射時間を変更させる
ことを特徴とする請求項１から５のいずれか１項に記載の部材の接合方法。 In the second step, the laser output or the irradiation time per unit area to be irradiated to the joining portion is changed between the fastening portion by the self-piercing rivet and the region between the self-piercing rivets. The method for joining members according to any one of claims 1 to 5.
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