JP5806561B2 - Manufacturing method of magnetic contactor - Google Patents

Manufacturing method of magnetic contactor Download PDF

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JP5806561B2
JP5806561B2 JP2011193551A JP2011193551A JP5806561B2 JP 5806561 B2 JP5806561 B2 JP 5806561B2 JP 2011193551 A JP2011193551 A JP 2011193551A JP 2011193551 A JP2011193551 A JP 2011193551A JP 5806561 B2 JP5806561 B2 JP 5806561B2
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cylindrical portion
welding
manufacturing
joined
flange portion
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JP2013054981A (en
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今村　清治
清治 今村
岡本　浩一
浩一 岡本
幸悦 高谷
幸悦 高谷
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Fuji Electric Co Ltd
Fuji Electric FA Components and Systems Co Ltd
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Fuji Electric FA Components and Systems Co Ltd
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Description

本発明は、接点装置がガスで密閉された電磁接触器の製造方法に関する。   The present invention relates to a method for manufacturing an electromagnetic contactor in which a contact device is sealed with a gas.

従来の電磁接触器のガス密閉型構造（以下、カプセル構造品という）として、図４に示す構造のものが知られている。
図４のカプセル構造品は、セラミック製の消弧室１内部に、固定接点２６、可動接点２７ａを有する可動端子２７、可動軸２８、接触バネ２９等が組み込まれている。キャップ８内には可動軸２８が連結された可動鉄心３０、復帰バネ３１が組み込まれている。消弧室１には、固定端子２及び消弧室１と接続部材３が接合されており、接続部材３は、消弧室１の開口端部１ａに接合した筒部３ａと、フランジ部３ｂとで構成されている。 As a conventional gas-sealed structure (hereinafter referred to as a capsule structure) of an electromagnetic contactor, a structure shown in FIG. 4 is known.
The capsule structure shown in FIG. 4 has a fixed contact 26, a movable terminal 27 having a movable contact 27a, a movable shaft 28, a contact spring 29, and the like incorporated in the arc extinguishing chamber 1 made of ceramic. A movable iron core 30 and a return spring 31 connected to a movable shaft 28 are incorporated in the cap 8. The arc-extinguishing chamber 1 is joined to the fixed terminal 2 and the arc-extinguishing chamber 1 and the connecting member 3. The connecting member 3 includes a cylindrical portion 3 a joined to the opening end 1 a of the arc-extinguishing chamber 1, and a flange portion 3 b. It consists of and.

図４の符号４は、可動軸２８が挿通する開口穴４ａを形成したベース板であり、このベース板４とキャップ８のフランジ部８ａ及びベース板４と接続部材３のフランジ部３ｂが、レーザ溶接により接合されている。
図５は、図４で示したカプセル構造品の接合部分を示したものであり、消弧室１と固定端子２及び消弧室１と接続部材３は、夫々ろう付け（符号５で示す部分）により接合されている。ろう付けを行なう際に重要なことは、接合する材料間の特性上の考慮が必要となる。すなわち、接合する材料間の膨張係数差による残留応力割れを防止することである。 Reference numeral 4 in FIG. 4 denotes a base plate in which an opening hole 4a through which the movable shaft 28 is inserted. The base plate 4 and the flange portion 8a of the cap 8 and the base plate 4 and the flange portion 3b of the connecting member 3 are formed by a laser. They are joined by welding.
FIG. 5 shows a joint portion of the capsule structure shown in FIG. 4, and the arc extinguishing chamber 1 and the fixed terminal 2 and the arc extinguishing chamber 1 and the connecting member 3 are brazed (portions indicated by reference numeral 5). ). What is important when brazing is to consider the characteristics between the materials to be joined. That is, residual stress cracking due to a difference in expansion coefficient between materials to be joined is prevented.

そのため、接合する材料の一方の継手構造部の板厚を薄くしたり、あるいは接合する材料の間に中間リング材を入れて膨張係数差を少なくしたりして、残留応力の緩和を図っていることである。
特に、セラミック製の消弧室１と接続部材３とのろう付け５は、ろう付け長さがより大きいため消弧室１のろう付け部に対して、残留応力をいかに小さくするかの継手設計が重要となっている。 Therefore, the residual stress is mitigated by reducing the plate thickness of one joint structure of the material to be joined or by inserting an intermediate ring material between the materials to be joined to reduce the difference in expansion coefficient. That is.
In particular, the brazing 5 between the ceramic arc extinguishing chamber 1 and the connecting member 3 has a larger brazing length, and therefore a joint design for reducing the residual stress with respect to the brazing portion of the arc extinguishing chamber 1. Is important.

図５の符号６で示す部分は、ろう付け後に行なうシール溶接を行なう部位であり、ベース板４と接続部材３のフランジ部３ａとの間に四角形状のシール溶接６を行うとともに、キャップ８のフランジ部８ａとベース板４との間に円周形状のシール溶接６を行なう。なお、シール溶接法としてはレーザ溶接が行なわれている。
また、図６は、別構造のカプセル構造品を示すものであり、消弧室１とベース板４との間に、段差部を設けた形状として緩衝機能を有する接続部材７が介装されており、この接続部材７及び消弧室１はろう付け５で接合されており、接続部材７及びベース板４はプロジェクション溶接８で接合されている。 A portion indicated by reference numeral 6 in FIG. 5 is a portion where seal welding is performed after brazing, and a rectangular seal welding 6 is performed between the base plate 4 and the flange portion 3 a of the connection member 3, and the cap 8 A circumferential seal weld 6 is performed between the flange portion 8 a and the base plate 4. Laser welding is performed as the seal welding method.
FIG. 6 shows a capsule structure having a different structure, in which a connecting member 7 having a buffer function is interposed between the arc extinguishing chamber 1 and the base plate 4 as a stepped portion. The connecting member 7 and the arc extinguishing chamber 1 are joined by brazing 5, and the connecting member 7 and the base plate 4 are joined by projection welding 8.

ここで、セラミック製の消弧室１は、成形、焼成、研磨などの工程を経るが、片面開きの直方体を製造する場合、特に開き面積に対する奥行き深さの割合が大きくなると成形・焼成の工程で奥行き部に微細割れなどが発生し易いため、最適な成形型を製作するための手直しが必要である。また、セラミック自体は衝撃に弱いので、セラミック製の消弧室１の製作は研磨工程を含め、キズなどを完全に除去しなければならないという問題もある。   Here, the arc-extinguishing chamber 1 made of ceramic undergoes processes such as molding, firing, and polishing. However, when manufacturing a single-sided rectangular parallelepiped, the process of molding and firing particularly when the ratio of the depth depth to the open area increases. In this case, fine cracks and the like are likely to occur in the depth portion, and it is necessary to modify the mold for producing the optimum mold. In addition, since the ceramic itself is vulnerable to impact, there is a problem that the production of the arc extinguishing chamber 1 made of ceramic must completely remove scratches and the like including a polishing process.

また、図７に示すものは、図５及び図６に示したものと異なる構成のカプセル構造品を示すものである（例えば、特許文献１）。
このカプセル構造品は、セラミック板８と、金属製ケース９と、金属枠体１０とを備え、セラミック板８と、このセラミック板８に対して熱膨張率が近い材料（４２アロイ、コバールなど）からなる金属枠体１０とがろう付け１１で接合され、金属枠体１０と金属ケース９とが、四角形周のシール溶接としてプロジエクション溶接１２で接合されている。 Moreover, what is shown in FIG. 7 shows the capsule structure goods of a structure different from what was shown in FIG.5 and FIG.6 (for example, patent document 1).
This capsule structure product includes a ceramic plate 8, a metal case 9, and a metal frame 10, and the ceramic plate 8 and a material having a thermal expansion coefficient close to that of the ceramic plate 8 (42 alloy, Kovar, etc.) The metal frame body 10 is joined by brazing 11, and the metal frame body 10 and the metal case 9 are joined by projection welding 12 as seal welding of a square circumference.

これらセラミック板８、金属製ケース９及び金属枠体１０の継手構造（図７の符号１３で示す接合部）における金属枠体の他の形状として、図８（ａ）〜（ｄ）のものがある。セラミック板８と金属ケース９の仲介としての金属枠体１４ａ〜１４ｄは、それぞれセラミック板８に対してはろう付け１５で接合され、金属ケース９に対してはプロジェクション溶接１６で接合されている。   As other shapes of the metal frame in the joint structure of the ceramic plate 8, the metal case 9, and the metal frame 10 (joined portion indicated by reference numeral 13 in FIG. 7), there are those shown in FIGS. is there. The metal frames 14 a to 14 d as mediators between the ceramic plate 8 and the metal case 9 are joined to the ceramic plate 8 by brazing 15 and are joined to the metal case 9 by projection welding 16.

ところで、上記構成のセラミック板８は、図５及び図６で示したセラミック製の消弧室１と比べて、平板形状という構造がシンブルなため割れ発生が起こりにくい。
また、セラミック板８は構造上応力が集中する箇所がないため、製造段階やカプセル構造品の製造段階でも割れが起こりにくい。
しかし、セラミック板８と、金属枠体１０、１４ａ〜１４ｄとのろう付け工程で熱的な反りが発生しやすく、金属枠体１０、１４ａ〜１４ｄと金属ケース９とのプロジェクション溶接工程では、上部電極と下部電極とを挟みこんで加圧抵抗溶接するので、四角形周上のシール溶接部に応力がかかり易くなる。 By the way, the ceramic plate 8 having the above configuration is less likely to be cracked because the structure of the flat plate shape is thimble compared to the ceramic arc extinguishing chamber 1 shown in FIGS.
In addition, since the ceramic plate 8 does not have a portion where stress is concentrated due to the structure, cracks are unlikely to occur at the manufacturing stage or the capsule structure manufacturing stage.
However, thermal warpage is likely to occur in the brazing process between the ceramic plate 8 and the metal frames 10, 14 a to 14 d, and in the projection welding process between the metal frames 10, 14 a to 14 d and the metal case 9, Since pressure resistance welding is performed by sandwiching the electrode and the lower electrode, stress is easily applied to the seal welded portion on the circumference of the square.

そのため、図７及び図８で示したセラミック板８を使用するカプセル構造品は、セラミック板８と金属枠体１０、１４ａ〜１４ｄとのろう付け箇所に割れの発生が起きないように、プロジェクション溶接用上部・下部電極形状、挟みこむ挟み代、金属枠体１０、１４ａ〜１４ｄの継手形状など、技術的なノウハウが必要となるという問題がある。   Therefore, in the capsule structure product using the ceramic plate 8 shown in FIGS. 7 and 8, projection welding is performed so that cracking does not occur in the brazed portion between the ceramic plate 8 and the metal frames 10, 14a to 14d. There is a problem that technical know-how such as the shape of the upper and lower electrodes, the clamping allowance, and the joint shape of the metal frames 10 and 14a to 14d are required.

特開２００１−０６８５７３号公報JP 2001-068573 A

以上より、本発明は上記に記載した様々な問題点に鑑みてなされたものであり、セラミック板に割れが生じにくく、信頼性の高いセラミック板、接続部材、金属筐体の接続構造を得ることができる電磁接触器の製造方法を提供することを目的とする。   As described above, the present invention has been made in view of the various problems described above, and a ceramic plate, a connection member, and a metal housing connection structure that are not easily cracked and have high reliability are obtained. An object of the present invention is to provide a method of manufacturing an electromagnetic contactor capable of performing

上記目的を達成するために、本発明の第１の実施の形態に係る電磁接触器の製造方法は、開口穴を有するベース板と、このベース板の上部に固定される金属筐体と、この金属筐体の上部に固定される筒形状の接続部材と、この接続部材の上部の開放端面に固定され、且つ固定端子が貫通して固定されるセラミック板と、前記ベース板の下部に固定されるキャップと、を備え、前記接続部材、前記セラミック板及び前記固定端子をろう付けで接合して第１組立て部品を形成し、前記ベース板、前記金属筐体及び前記キャップを溶接で接合して第２組立て部品を形成するとともに、前記第１組立て部品の下部と前記第２組立て部品の上部とにそれぞれ設けた重合部を重ね合わせ、それら重合部の重ね合わせ方向の外方からレーザ光を照射して前記第１組立て部品及び前記第２組立て部品をレーザ溶接により接合することを特徴とする電磁接触器の製造方法である。   In order to achieve the above object, a method of manufacturing an electromagnetic contactor according to a first embodiment of the present invention includes a base plate having an opening hole, a metal housing fixed to the upper portion of the base plate, A cylindrical connection member fixed to the upper part of the metal housing, a ceramic plate fixed to the open end surface of the upper part of the connection member and fixed by a fixed terminal, and fixed to the lower part of the base plate A first assembly part by joining the connecting member, the ceramic plate and the fixed terminal by brazing, and joining the base plate, the metal casing and the cap by welding. A second assembly part is formed, and overlapping portions provided on a lower part of the first assembly part and an upper part of the second assembly part are overlapped, and laser light is irradiated from the outside in the overlapping direction of the overlapping parts. And said Is a manufacturing method of the electromagnetic contactor, characterized in that joining by laser welding 1 assembly and the second assembly.

また、本発明の第２の実施の形態に係る電磁接触器の製造方法は、前記接続部材は、筒部と、この筒部の下端から筒部軸方向に直交して外方に突出するフランジ部とを備え、前記金属筐体は、筒部と、この筒部の上端から筒部軸方向に直交して外方に突出するフランジ部とを備え、これらフランジ部同士を前記重合部として重ね合わせ、上下方向から前記レーザ光を照射するようにしたことを特徴とする電磁接触器の製造方法である。   Further, in the method for manufacturing an electromagnetic contactor according to the second embodiment of the present invention, the connecting member includes a cylindrical portion and a flange projecting outward from the lower end of the cylindrical portion perpendicular to the axial direction of the cylindrical portion. The metal housing includes a cylindrical portion and a flange portion that protrudes outward from the upper end of the cylindrical portion perpendicular to the axial direction of the cylindrical portion, and the flange portions are overlapped as the overlapping portion. In addition, the method for manufacturing an electromagnetic contactor is characterized in that the laser beam is irradiated from above and below.

また、本発明の第３の実施の形態に係る電磁接触器の製造方法は、前記接続部材は、筒部と、この筒部の下端から筒部軸方向に沿って縮径、或いは拡径する傾斜フランジ部とを備え、前記金属筐体は、筒部と、この筒部の上端から筒部軸方向に沿って拡径、或いは縮径する傾斜フランジ部とを備え、これら傾斜フランジ部同士を前記重合部として重ね合わせ、斜め上下方向から前記レーザ光を照射するようにしたことを特徴とする電磁接触器の製造方法である。   Further, in the method for manufacturing an electromagnetic contactor according to the third embodiment of the present invention, the connecting member is reduced in diameter or expanded in diameter along the axial direction of the cylindrical portion from the lower end of the cylindrical portion. An inclined flange portion, and the metal casing includes a cylindrical portion and an inclined flange portion whose diameter is increased or reduced from the upper end of the cylindrical portion along the axial direction of the cylindrical portion. It is the manufacturing method of the electromagnetic contactor which overlapped as said superposition | polymerization part and irradiated the said laser beam from the diagonal up-down direction.

さらに、本発明の第４の実施の形態に係る電磁接触器の製造方法は、前記接続部材の下端及び前記金属筐体の上端の一方に拡筒部を設け、それら前記接続部材の下端及び前記金属筐体の上端の他方に、前記拡筒部の内側に嵌まり込むことが可能なストレート筒部を設け、前記拡筒部及び前記ストレート筒部を前記重合部として重ね合わせ、水平方向から前記レーザ光を照射するようにしたことを特徴とする電磁接触器の製造方法である。
さらにまた、本発明の第５の実施の形態に係る電磁接触器の製造方法は、前記第１組立て部品及び前記第２組立て部品を接合する前記レーザ溶接は、溶接速度が３〜５m/minの高速溶接であることを特徴とする電磁接触器の製造方法である。 Furthermore, in the method for manufacturing an electromagnetic contactor according to the fourth embodiment of the present invention, an expanded tube portion is provided on one of the lower end of the connection member and the upper end of the metal housing, and the lower end of the connection member and the Provided on the other upper end of the metal casing is a straight tube portion that can be fitted inside the expanded tube portion, and the expanded tube portion and the straight tube portion are overlapped as the overlapping portion, and the horizontal tube A method of manufacturing an electromagnetic contactor characterized by irradiating a laser beam.
Furthermore, in the method for manufacturing an electromagnetic contactor according to the fifth embodiment of the present invention, the laser welding for joining the first assembly component and the second assembly component has a welding speed of 3 to 5 m / min. It is a manufacturing method of an electromagnetic contactor characterized by being high-speed welding.

本発明に係る電磁接触器の製造方法によれば、接続部材、セラミック板及び固定端子をろう付けで接合して第１組立て部品を形成しているので、セラミック板が割れ等の欠陥が発生するのを抑制することができる。
また、第１組立て部品及び第２組立て部品のそれぞれ設けた重合部を重ね合わせ、物理的な加圧を作用せずにレーザ溶接を行なうことで、正常な重合部の溶接を行なうことができる。 According to the method of manufacturing an electromagnetic contactor according to the present invention, the connecting member, the ceramic plate, and the fixed terminal are joined by brazing to form the first assembly component, and thus the ceramic plate has a defect such as a crack. Can be suppressed.
In addition, it is possible to perform normal welding of the overlapped portion by superimposing the overlapped portions provided respectively for the first assembly component and the second assembly component and performing laser welding without applying physical pressure.

本発明に係る第１実施形態の電磁接触器のガス密閉型構造を示す要部断面図である。It is principal part sectional drawing which shows the gas sealing type structure of the magnetic contactor of 1st Embodiment which concerns on this invention. 本発明に係る第２実施形態の電磁接触器のガス密閉型構造を示す要部断面図である。It is principal part sectional drawing which shows the gas sealing type structure of the magnetic contactor of 2nd Embodiment which concerns on this invention. 本発明に係る第３実施形態の電磁接触器のガス密閉型構造を示す要部断面図である。It is principal part sectional drawing which shows the gas sealing type structure of the magnetic contactor of 3rd Embodiment which concerns on this invention. 従来の電磁接触器のガス密閉型構造を示す図である。It is a figure which shows the gas-sealed type structure of the conventional electromagnetic contactor. 従来の他の電磁接触器のガス密閉型構造を示す図である。It is a figure which shows the gas sealed structure of the other conventional electromagnetic contactor. 従来の他の電磁接触器のガス密閉型構造を示す図である。It is a figure which shows the gas sealed structure of the other conventional electromagnetic contactor. 従来の他の電磁接触器のガス密閉型構造を示す図である。It is a figure which shows the gas sealed structure of the other conventional electromagnetic contactor. 図７で示した電磁接触器のガス密閉型構造の接合部の変形例を示す図である。It is a figure which shows the modification of the junction part of the gas sealing type structure of the magnetic contactor shown in FIG.

以下、本発明を実施するための形態（以下、実施形態という。）を、図面を参照しながら詳細に説明する。
図１は、電磁接触器のガス密閉型構造（以下、カプセル構造品という）の第１実施形態を示すものである。
本実施形態のカプセル構造品１５は、ベース板１６と、ベース板１６の上面に固定された四角筒状の金属筐体１７と、金属筐体１７の上部に固定された四角筒状の接続部材１８と、接続部材１８の上部開口部を閉塞して固定されたセラミック板１９と、セラミック板１９を貫通して固定した固定端子２０と、ベース板１６の下面に固定されたキャップ２１と、を備えている。ベース板１６、金属筐体１７、接続部材１８及びセラミック板１９で囲まれた空間には、図４で示した可動接点２７ａを有する可動端子２７、可動軸２８、接触バネ２９等が組み込まれている。また、キャップ２１内には、図４で示した可動軸２８が連結された可動鉄心３０、復帰バネ３１が組み込まれている。 DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings.
FIG. 1 shows a first embodiment of a gas-sealed structure (hereinafter referred to as a capsule structure) of an electromagnetic contactor.
The capsule structure product 15 of the present embodiment includes a base plate 16, a rectangular cylindrical metal casing 17 fixed to the upper surface of the base plate 16, and a rectangular cylindrical connecting member fixed to the top of the metallic casing 17. 18, a ceramic plate 19 that is fixed by closing the upper opening of the connection member 18, a fixed terminal 20 that is fixed through the ceramic plate 19, and a cap 21 that is fixed to the lower surface of the base plate 16. I have. In a space surrounded by the base plate 16, the metal casing 17, the connection member 18, and the ceramic plate 19, the movable terminal 27 having the movable contact 27a shown in FIG. 4, the movable shaft 28, the contact spring 29, and the like are incorporated. Yes. In addition, a movable iron core 30 and a return spring 31 connected to the movable shaft 28 shown in FIG.

金属筐体１７は、筒部１７ａと、筒部１７ａの一端から筒部１７ａに直交して外方に突出する第１フランジ部１７ｂと、筒部１７ａの他端から筒部１７ａに直交して外方に突出する第２フランジ部１７ｃとを備えている。
接続部材１８は、セラミック板１９の膨張係数に近い４２アロイ、或いはコバール等の材料からなり、セラミック板１９に一端が接合した筒部１８ａと、筒部１８ａの他端から筒部１８ａに直交して外方に突出するフランジ部１８ｂとを備えている。 The metal housing 17 includes a cylindrical portion 17a, a first flange portion 17b that protrudes outward from one end of the cylindrical portion 17a perpendicular to the cylindrical portion 17a, and a vertical direction that intersects the cylindrical portion 17a from the other end of the cylindrical portion 17a. And a second flange portion 17c protruding outward.
The connecting member 18 is made of a material such as 42 alloy or Kovar, which has a coefficient of expansion close to that of the ceramic plate 19, and has a cylindrical portion 18a whose one end is joined to the ceramic plate 19, and is orthogonal to the cylindrical portion 18a from the other end of the cylindrical portion 18a. And a flange portion 18b protruding outward.

キャップ２１は、有底筒状の円筒部２１ａと、円筒部２１ａの開放端で外方に突出して形成されたフランジ部２１ｂとを備えている。
接続部材１８、セラミック板１９及び固定端子２０は、真空ろう付けで接合されている。すなわち、セラミック板１９に設けた貫通穴１９ａに挿通した固定端子２０が真空ろう付けで接合されているとともに、互いに密着した接続部材１８の筒部１８ａ及びセラミック板１９が真空ろう付けで接合されている。なお、ろう付けで接合した接続部材１８、セラミック板１９及び固定端子２０を、第１組立て部品２２と称する。 The cap 21 includes a cylindrical portion 21a having a bottomed cylindrical shape, and a flange portion 21b formed to protrude outward at the open end of the cylindrical portion 21a.
The connecting member 18, the ceramic plate 19, and the fixed terminal 20 are joined by vacuum brazing. That is, the fixed terminal 20 inserted through the through hole 19a provided in the ceramic plate 19 is joined by vacuum brazing, and the cylindrical portion 18a of the connecting member 18 and the ceramic plate 19 which are in close contact with each other are joined by vacuum brazing. Yes. The connecting member 18, the ceramic plate 19, and the fixed terminal 20 joined by brazing are referred to as a first assembly component 22.

また、キャップ２１、ベース板１６及び金属筐体１７は、レーザ溶接で接合されている。すなわち、互いに密着したキャップ２１のフランジ部２１ｂ及びベース板１６がレーザ溶接で接合されているとともに、互いに密着した金属筐体１７の第１フランジ部１７ｂ及びベース板１６がレーザ溶接で接合されている。なお、レーザ溶接で接合したキャップ２１、ベース板１６及び金属筐体１７を、第２組立て部品２３と称する。   Moreover, the cap 21, the base plate 16, and the metal housing | casing 17 are joined by laser welding. That is, the flange portion 21b and the base plate 16 of the cap 21 that are in close contact with each other are joined by laser welding, and the first flange portion 17b and the base plate 16 of the metal housing 17 that are in close contact with each other are joined by laser welding. . The cap 21, the base plate 16, and the metal casing 17 joined by laser welding are referred to as a second assembly component 23.

そして、第１組立て部品２２の接続部材１８のフランジ部１８ｂと第２組立て部品２３の金属筐体１７の第２フランジ部１７ｃを重ね合わせ、上方からフランジ部１８ｂに向けて入射したレーザ光２４によりフランジ部１８ｂ及び第２フランジ部１７ｃの周方向にレーザ溶接を行なうことで、第１及び第２組立て部品２２，２３が一体化されてカプセル構造品１５が形成される。
ここで、第１及び第２組立て部品２２，２３を一体化する際のレーザ溶接は、溶接速度を３〜５m/minとした高速溶接である。 Then, the flange portion 18b of the connecting member 18 of the first assembly component 22 and the second flange portion 17c of the metal casing 17 of the second assembly component 23 are overlapped, and the laser beam 24 incident on the flange portion 18b from above is used. By performing laser welding in the circumferential direction of the flange portion 18b and the second flange portion 17c, the first and second assembly parts 22 and 23 are integrated to form the capsule structure 15.
Here, the laser welding when integrating the first and second assembly parts 22 and 23 is high-speed welding with a welding speed of 3 to 5 m / min.

本実施形態によると、第１組立て部品２２は真空ろう付けで一体化されているので、接続部材１８の筒部１８ａに接合したセラミック板１９には割れ等の欠陥が発生しない。
また、第１組立て部品２２及び第２組立て部品２３を一体化する際には、重ね合わせてレーザ溶接されるフランジ部１８ｂ及び第２フランジ部１７ｃに物理的な加圧が作用しないので、フランジ部１８ｂ及び第２フランジ部１７ｃを正常に溶接することができる。そして、フランジ部１８ｂ及び第２フランジ部１７ｃの溶接の際には、セラミック板１９のろう付け部に対して負荷を与えることがない。 According to this embodiment, since the first assembly component 22 is integrated by vacuum brazing, the ceramic plate 19 joined to the cylindrical portion 18a of the connection member 18 does not have defects such as cracks.
Further, when the first assembly component 22 and the second assembly component 23 are integrated, physical pressure does not act on the flange portion 18b and the second flange portion 17c that are overlapped and laser-welded. 18b and the 2nd flange part 17c can be welded normally. When the flange portion 18b and the second flange portion 17c are welded, no load is applied to the brazed portion of the ceramic plate 19.

さらに、フランジ部１８ｂ及び第２フランジ部１７ｃのレーザ溶接は高速溶接で行なっているので、溶接部の周辺が高温度で加熱されて変形することもない。
次に、図２に示すものは、第２実施形態のカプセル構造品を示すものである。なお、第１実施形態と同一構成部分には、同一符号を付してその説明を省略する。
本実施形態のカプセル構造品２５は、図１で示したカプセル構造品１５に対して金属筐体１７及び接続部材１８が異なっている。 Furthermore, since the laser welding of the flange portion 18b and the second flange portion 17c is performed by high-speed welding, the periphery of the welded portion is not heated and deformed at a high temperature.
Next, what is shown in FIG. 2 shows the capsule structure product of the second embodiment. In addition, the same code | symbol is attached | subjected to the same component as 1st Embodiment, and the description is abbreviate | omitted.
The capsule structure product 25 of this embodiment is different from the capsule structure product 15 shown in FIG.

金属筐体１７は、筒部１７ａと、筒部１７ａの一端から筒部１７ａに直交して外方に突出する第１フランジ部１７ｂと、筒部１７ａの他端に形成された傾斜フランジ部１７ｄとで構成されている。
傾斜フランジ部１７ｄは、筒部１７ａの他端から軸方向に離間するに従い徐々に拡径した形状を有している。
また、接続部材１８は、セラミック板１９の膨張係数に近い４２アロイ、或いはコバール等の材料からなり、セラミック板１９に一端が接合した筒部１８ａと、筒部１８ａの他端に形成した傾斜フランジ部１８ｃとで構成されている。
傾斜フランジ部１８ｃは、筒部１８ａの他端から軸方向に離間するに従い徐々に縮径した形状を有している。 The metal casing 17 includes a cylindrical portion 17a, a first flange portion 17b that protrudes outward from one end of the cylindrical portion 17a perpendicularly to the cylindrical portion 17a, and an inclined flange portion 17d that is formed at the other end of the cylindrical portion 17a. It consists of and.
The inclined flange portion 17d has a shape that gradually increases in diameter as it is separated from the other end of the cylindrical portion 17a in the axial direction.
The connecting member 18 is made of a material such as 42 alloy or Kovar, which has a coefficient of expansion close to that of the ceramic plate 19, and has a cylindrical portion 18a whose one end is joined to the ceramic plate 19, and an inclined flange formed at the other end of the cylindrical portion 18a. It is comprised with the part 18c.
The inclined flange portion 18c has a shape that is gradually reduced in diameter as it is separated from the other end of the cylindrical portion 18a in the axial direction.

本実施形態は、第１組立て部品２２の接続部材１８の傾斜フランジ部１８ｃと、第２組立て部品２３の金属筐体１７の傾斜フランジ部１７ｄを重ね合わせ、斜め下方から傾斜フランジ部１７ｄに向けて入射したレーザ光２６により傾斜フランジ部１８ｃ及び傾斜フランジ部１７ｄの周方向にレーザ溶接を行なうことで、第１及び第２組立て部品２２，２３が一体化されてカプセル構造品２５が形成される。   In the present embodiment, the inclined flange portion 18c of the connection member 18 of the first assembly component 22 and the inclined flange portion 17d of the metal casing 17 of the second assembly component 23 are overlapped, and directed obliquely downward toward the inclined flange portion 17d. Laser welding is performed in the circumferential direction of the inclined flange portion 18c and the inclined flange portion 17d by the incident laser beam 26, whereby the first and second assembly parts 22 and 23 are integrated to form the capsule structure 25.

本実施形態も、第１及び第２組立て部品２２，２３を一体化する際のレーザ溶接は、溶接速度を３〜５m/minとした高速溶接である。
本実施形態も、第１実施形態と同様に、第１組立て部品２２及び第２組立て部品２３を一体化する際には、重ね合わせてレーザ溶接される傾斜フランジ部１８ｃ及び傾斜フランジ部１７ｄに物理的な加圧が作用しないので、傾斜フランジ部１８ｃ及び傾斜フランジ部１７ｄを正常に溶接することができる。そして、傾斜フランジ部１８ｃ及び傾斜フランジ部１７ｄの溶接の際には、セラミック板１９のろう付け部に対して負荷を与えることがない。 Also in this embodiment, laser welding when integrating the first and second assembly parts 22 and 23 is high-speed welding with a welding speed of 3 to 5 m / min.
Similarly to the first embodiment, in the present embodiment, when the first assembly component 22 and the second assembly component 23 are integrated, the inclined flange portion 18c and the inclined flange portion 17d that are laser-welded in an overlapping manner are physically attached. Therefore, the inclined flange portion 18c and the inclined flange portion 17d can be normally welded. When the inclined flange portion 18c and the inclined flange portion 17d are welded, no load is applied to the brazed portion of the ceramic plate 19.

さらに、傾斜フランジ部１８ｃ及び傾斜フランジ部１７ｄのレーザ溶接は高速溶接で行なっているので、溶接部の周辺が高温度で加熱されて変形することもない。
さらに、図３に示すものは、第３実施形態のカプセル構造品を示すものである。なお、本実施形態も、第１実施形態と同一構成部分には、同一符号を付してその説明を省略する。 Furthermore, since laser welding of the inclined flange portion 18c and the inclined flange portion 17d is performed by high-speed welding, the periphery of the welded portion is not heated and deformed at a high temperature.
Furthermore, what is shown in FIG. 3 shows the capsule structure product of the third embodiment. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

本実施形態のカプセル構造品３２は、図１で示したカプセル構造品１５に対して金属筐体１７及び接続部材１８が異なっている。
金属筐体１７は、筒部１７ａと、筒部１７ａの一端から筒部１７ａに直交して外方に突出する第１フランジ部１７ｂとで構成されている。
また、接続部材１８は、セラミック板１９の膨張係数に近い４２アロイ、或いはコバール等の材料からなり、セラミック板１９に一端が接合した筒部１８ａと、筒部１８ａの他端に形成した拡筒部１８ｄとで構成されている。 The capsule structure product 32 of the present embodiment is different from the capsule structure product 15 shown in FIG.
The metal housing 17 includes a cylindrical portion 17a and a first flange portion 17b that protrudes outward from the one end of the cylindrical portion 17a perpendicular to the cylindrical portion 17a.
The connecting member 18 is made of a material such as 42 alloy or Kovar, which has a coefficient of expansion close to that of the ceramic plate 19, and has a cylindrical portion 18a whose one end is joined to the ceramic plate 19, and an expanded cylinder formed at the other end of the cylindrical portion 18a. 18d.

拡筒部１８ｄは、筒部１８ａの外径より大きな内径を有した筒状部であり、この拡筒部１８ｄに、金属筐体１７の筒部１７ａの他端部が内側から嵌まり込むようになっている。
本実施形態は、第１組立て部品２２の接続部材１８に形成した拡筒部１８ｄに、第２組立て部品２３の金属筐体１７の筒部１７ａを内側から嵌め込んで重ね合わせ、水平方向から拡筒部１８ｄに向けて入射したレーザ光３３により拡筒部１８ｄ及び筒部１７ａの周方向にレーザ溶接を行なうことで、第１及び第２組立て部品２２，２３が一体化されてカプセル構造品３２が形成される。 The expanded cylindrical portion 18d is a cylindrical portion having an inner diameter larger than the outer diameter of the cylindrical portion 18a, and the other end portion of the cylindrical portion 17a of the metal housing 17 is fitted into the expanded cylindrical portion 18d from the inside. It has become.
In the present embodiment, the cylindrical portion 17a of the metal casing 17 of the second assembly component 23 is fitted and overlapped with the expanded cylindrical portion 18d formed on the connection member 18 of the first assembly component 22 to expand from the horizontal direction. By performing laser welding in the circumferential direction of the expanded cylindrical portion 18d and the cylindrical portion 17a with the laser beam 33 incident on the cylindrical portion 18d, the first and second assembly parts 22 and 23 are integrated to form a capsule structure 32. Is formed.

本実施形態も、第１及び第２組立て部品２２，２３を一体化する際のレーザ溶接は、溶接速度を３〜５m/minとした高速溶接である。
本実施形態も、第１実施形態と同様に、第１組立て部品２２及び第２組立て部品２３を一体化する際には、重ね合わせてレーザ溶接される拡筒部１８ｄ及び筒部１７ａに物理的な加圧が作用しないので、拡筒部１８ｄ及び筒部１７ａを正常に溶接することができる。そして、拡筒部１８ｄ及び筒部１７ａの溶接の際には、セラミック板１９のろう付け部に対して負荷を与えることがない。 Also in this embodiment, laser welding when integrating the first and second assembly parts 22 and 23 is high-speed welding with a welding speed of 3 to 5 m / min.
Similarly to the first embodiment, in the present embodiment, when the first assembly component 22 and the second assembly component 23 are integrated, the cylindrical expansion portion 18d and the cylindrical portion 17a that are laser-welded in an overlapping manner are physically attached. Since no pressure is applied, the expanded tube portion 18d and the tube portion 17a can be normally welded. And when welding the expanded cylinder part 18d and the cylinder part 17a, a load is not given to the brazing part of the ceramic plate 19.

さらに、拡筒部１８ｄ及び筒部１７ａのレーザ溶接は高速溶接で行なっているので、溶接部の周辺が高温度で加熱されて変形することもない。
さらにまた、本実施形態の拡筒部１８ｄ及び筒部１７ａは嵌め合い状態となっているので、第１組立て部品２２及び第２組立て部品２３をセットした際の位置決めを容易に行なうことができる。 Further, since the laser welding of the expanded tube portion 18d and the tube portion 17a is performed by high-speed welding, the periphery of the welded portion is not heated and deformed at a high temperature.
Furthermore, since the expanded cylindrical portion 18d and the cylindrical portion 17a of the present embodiment are in a fitted state, positioning when the first assembly component 22 and the second assembly component 23 are set can be easily performed.

なお、レーザの種類としては、ビーム品質が極めて良いファイバーレーザ、あるいはディスクレーザなどが良い。これらのレーザは、ビーム品質が極めて高い（Ｍ２値＝１．１：光の回折限界に近い値）ためである。長焦点距離のレンズ（Ｆ＝３００〜５５０ｍｍ）を使用しても集光ビーム径を小さく確保できるだけでなく。ビームの集光角が小さくできるので、狭小幅で深い溝の底までレーザ光が届くという特徴（途中の壁に光が干渉しない）があるからである。もちろん従来のＹＡＧレーザやＣ０２レーザでも構わないが、ビーム品質の点で上記のような狭小幅で深い溝の底に対応できるかが難しい点であることに注意が必要である。   As the type of laser, a fiber laser or a disk laser having a very good beam quality is preferable. This is because these lasers have extremely high beam quality (M2 value = 1.1: a value close to the diffraction limit of light). Even if a lens with a long focal length (F = 300 to 550 mm) is used, the diameter of the focused beam can be kept small. This is because the converging angle of the beam can be made small, so that the laser beam reaches the bottom of a narrow groove with a narrow width (the light does not interfere with the intermediate wall). Of course, a conventional YAG laser or C02 laser may be used, but it should be noted that it is difficult to cope with the bottom of the narrow groove as described above in terms of beam quality.

１５…カプセル構造品、１６…ベース板、１７…金属筐体、１７ａ…筒部、１７ｂ…第１フランジ部、１７ｃ…第２フランジ部、１７ｄ…傾斜フランジ部、１８…接続部材、１８ａ…筒部、１８ｂ…フランジ部、１８ｃ…傾斜フランジ部、１８ｄ…拡筒部、１９…セラミック板、１９ａ…貫通穴、２０…固定端子、２１…キャップ、２１ａ…円筒部、２１ｂ…フランジ部、２２…第１組立て部品、２３…第２組立て部品、２４…レーザ光、２５…カプセル構造品、２６…レーザ光、２７…可動端子、２７ａ…可動接点、２８…可動軸、２９…接触バネ、３０…可動鉄心、３１…復帰バネ、３２…カプセル構造品、３３…レーザ光   DESCRIPTION OF SYMBOLS 15 ... Capsule structure goods, 16 ... Base board, 17 ... Metal housing | casing, 17a ... Cylindrical part, 17b ... 1st flange part, 17c ... 2nd flange part, 17d ... Inclined flange part, 18 ... Connection member, 18a ... Cylindrical 18b: Flange portion, 18c: Inclined flange portion, 18d: Expanded tube portion, 19 ... Ceramic plate, 19a ... Through hole, 20 ... Fixed terminal, 21 ... Cap, 21a ... Cylindrical portion, 21b ... Flange portion, 22 ... 1st assembly component, 23 ... 2nd assembly component, 24 ... laser beam, 25 ... capsule structure product, 26 ... laser beam, 27 ... movable terminal, 27a ... movable contact, 28 ... movable shaft, 29 ... contact spring, 30 ... Movable iron core, 31 ... Return spring, 32 ... Capsule structure, 33 ... Laser light

Claims (5)

開口穴を有するベース板と、
このベース板の上部に固定される金属筐体と、
この金属筐体の上部に固定される筒形状の接続部材と、
この接続部材の上部の開放端面に固定され、且つ固定端子が貫通して固定されるセラミック板と、
前記ベース板の下部に固定されるキャップと、を備え、
前記接続部材、前記セラミック板及び前記固定端子をろう付けで接合して第１組立て部品を形成し、
前記ベース板、前記金属筐体及び前記キャップを溶接で接合して第２組立て部品を形成するとともに、
前記第１組立て部品の下部と前記第２組立て部品の上部とにそれぞれ設けた重合部を重ね合わせ、それら重合部の重ね合わせ方向の外方からレーザ光を照射して前記第１組立て部品及び前記第２組立て部品をレーザ溶接により接合することを特徴とする電磁接触器の製造方法。 A base plate having an opening hole;
A metal housing fixed to the top of the base plate,
A cylindrical connection member fixed to the top of the metal housing;
A ceramic plate fixed to the upper open end surface of the connection member, and the fixed terminal penetrating and fixed;
A cap fixed to a lower portion of the base plate,
The connecting member, the ceramic plate and the fixed terminal are joined by brazing to form a first assembly part,
The base plate, the metal casing and the cap are joined by welding to form a second assembly part,
The overlapping parts provided on the lower part of the first assembly part and the upper part of the second assembly part are overlapped, and laser light is irradiated from the outside in the overlapping direction of the overlapping parts, and the first assembly part and the A method of manufacturing an electromagnetic contactor, wherein the second assembly component is joined by laser welding. 前記接続部材は、筒部と、この筒部の下端から筒部軸方向に直交して外方に突出するフランジ部とを備え、
前記金属筐体は、筒部と、この筒部の上端から筒部軸方向に直交して外方に突出するフランジ部とを備え、
これらフランジ部同士を前記重合部として重ね合わせ、上下方向から前記レーザ光を照射するようにしたことを特徴とする請求項１記載の電磁接触器の製造方法。 The connecting member includes a cylindrical portion, and a flange portion that protrudes outward from the lower end of the cylindrical portion perpendicular to the axial direction of the cylindrical portion,
The metal housing includes a cylindrical portion, and a flange portion that protrudes outward from the upper end of the cylindrical portion perpendicular to the axial direction of the cylindrical portion,
2. The method of manufacturing an electromagnetic contactor according to claim 1, wherein the flange portions are overlapped with each other as the overlapping portion, and the laser beam is irradiated from above and below. 前記接続部材は、筒部と、この筒部の下端から筒部軸方向に沿って縮径、或いは拡径する傾斜フランジ部とを備え、
前記金属筐体は、筒部と、この筒部の上端から筒部軸方向に沿って拡径、或いは縮径する傾斜フランジ部とを備え、
これら傾斜フランジ部同士を前記重合部として重ね合わせ、斜め上下方向から前記レーザ光を照射するようにしたことを特徴とする請求項１記載の電磁接触器の製造方法。 The connecting member includes a cylindrical portion, and an inclined flange portion that is reduced in diameter or increased in diameter from the lower end of the cylindrical portion along the axial direction of the cylindrical portion,
The metal casing includes a cylindrical portion, and an inclined flange portion that expands or decreases in diameter along the axial direction of the cylindrical portion from the upper end of the cylindrical portion,
2. The method of manufacturing an electromagnetic contactor according to claim 1, wherein the inclined flange portions are overlapped with each other as the overlapping portion, and the laser beam is irradiated obliquely from above and below. 前記接続部材の下端及び前記金属筐体の上端の一方に拡筒部を設け、それら前記接続部材の下端及び前記金属筐体の上端の他方に、前記拡筒部の内側に嵌まり込むことが可能なストレート筒部を設け、
前記拡筒部及び前記ストレート筒部を前記重合部として重ね合わせ、水平方向から前記レーザ光を照射するようにしたことを特徴とする請求項１記載の電磁接触器の製造方法。 An expanded tube portion may be provided on one of the lower end of the connection member and the upper end of the metal housing, and the other of the lower end of the connection member and the upper end of the metal housing may be fitted inside the expanded tube portion. Possible straight tube part,
2. The method of manufacturing an electromagnetic contactor according to claim 1, wherein the expanded cylindrical portion and the straight cylindrical portion are overlapped as the overlapping portion, and the laser beam is irradiated from a horizontal direction. 前記第１組立て部品及び前記第２組立て部品を接合する前記レーザ溶接は、溶接速度が３〜５m/minの高速溶接であることを特徴とする請求項１乃至４の何れか１項に記載の電磁接触器の製造方法。   5. The laser welding for joining the first assembly component and the second assembly component is high-speed welding with a welding speed of 3 to 5 m / min. 6. Manufacturing method of magnetic contactor.
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