JP2004090556A - Coupling structure of laser welded portion - Google Patents

Coupling structure of laser welded portion Download PDF

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Publication number
JP2004090556A
JP2004090556A JP2002257788A JP2002257788A JP2004090556A JP 2004090556 A JP2004090556 A JP 2004090556A JP 2002257788 A JP2002257788 A JP 2002257788A JP 2002257788 A JP2002257788 A JP 2002257788A JP 2004090556 A JP2004090556 A JP 2004090556A
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JP
Japan
Prior art keywords
assembly
laser
absorbent material
permeable material
close contact
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Pending
Application number
JP2002257788A
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Japanese (ja)
Inventor
Yasunori Kawamoto
河本　保典
Fumio Kasai
河西　文男
Yozo Iwai
祝　洋三
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Denso Corp
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Denso Corp
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Publication date
Application filed by Denso Corp filed Critical Denso Corp
Priority to JP2002257788A priority Critical patent/JP2004090556A/en
Publication of JP2004090556A publication Critical patent/JP2004090556A/en
Pending legal-status Critical Current

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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/58—Snap connection
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    • B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29K2909/08—Glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29L2031/00—Other particular articles
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an assembly having a coupling structure permitting stable pressurization/welding without a presser tool in laser welding of a resin. <P>SOLUTION: The assembly has at least two structural elements which have coupling portions to be coupled together with a laser. The assembly has a permeable material allowing a laser beam to pass through and an absorbing material absorbing the beam to generate heat and melt. The permeable material is arranged in the absorbing material so that at least a part of it constitutes an adhering portion capable of being adhered to the absorbing material. The assembly also has an engaging portion for adhering the adhering portion. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、樹脂成形品及びその製造方法に係り、より特別にはレーザを使用して接合された樹脂成形品及びその製造方法に関する。
【０００２】
【従来の技術】
近年、軽量化、低コスト化等の面から、電気・電子製品の部品等の種々の分野において樹脂が利用されている。この様な樹脂製部品は高生産性の観点から、まず複数の構成要素を成形し、これらを互いに接合することにより組み立てられることが多い。この場合にレーザにより樹脂を溶着して接合することが行われている。
【０００３】
樹脂のレーザ溶着とは、レーザに対して透過性のある樹脂と吸収性のある樹脂を組み合わせ、透過性のある樹脂越しにレーザを照射させることで吸収側を溶融させ、その熱により透過側を溶融させ互いを溶着する技術である。
従来技術としては、ガラス板やアクリル板といった透明な治具により、被溶着材に対して加圧することで密着性を上げ、治具越しにレーザを照射させることで溶着を実施する方法がある。また、被溶着材にフランジを設け、レーザが照射される部位以外を加圧するような治具を作成し溶着を実施する方法も採用されてきた。しかし近年、製品はますます小型化・高機能化しており、加圧が可能なスペースを確保することが困難であるといった問題が生じている。
【０００４】
この様な従来のレーザ溶着の構成を図８に示す。この場合は、透過性材料２と吸収性材料３とをレーザにより溶着接合する形態である。レーザ照射ヘッド４からレーザ１が照射され、吸収性材料３において発熱し溶着部５を形成し接合する。この場合において、吸収性材料３の発熱の透過性材料２への熱伝導を効率的にするために、治具２０により被溶着材である透過性材料２と吸収性材料３を押さえ込んで加圧して、透過性材料２と吸収性材料３とを密着させている。
【０００５】
またこの様な溶着方法が、例えば特開２００１−１０５５００号公報に開示されており（特許文献１参照。）、この方法では、中空体にテーパー継手を用いたレーザ溶着工法が主たる技術であるが、この技術の適用においては、下記の如き課題がある。
・　溶着面での位置決めが困難である。
・　板厚が部位により異なるため、レーザの入熱が均一でなくなり、溶着部の信
頼性の確保が難しい。
・　押さえ治具の有無にかかわらず、溶融した時に応力によりずれが発生する。
また、自動車部品においてはＰＢＴ（ポリブチレンテレフタレート）といったレーザ透過性の困難な材料との接合が、期待されており、レーザを均一に照射させることが必要不可欠になっている。
【特許文献１】
特開２００１−１０５５００号公報（第３頁、第８図）
【０００６】
【発明が解決しようとする課題】
上述したように従来のレーザ溶着技術における被溶着材の保持方法においては、被溶着材を治具により加圧保持することが必要であったが、この様な治具による保持方法は、加圧スペースを確保することが困難な小型化・高機能化の要求される最近の製品には適さない。また、従来の方法では、位置決め精度の問題、均一な加熱の問題、溶融時の応力による被溶着材のずれの問題、ＰＢＴ等のレーザ透過の困難な材料の接合の問題等に対して十分に対応できていない。
【０００７】
本発明は上述した事情に鑑みなされたもので、樹脂材料のレーザ溶着において、押さえ治具なしで安定的に加圧・溶着が可能な継手形状を有する製品及びその接合方法を提供することを目的とする。
【０００８】
これとは別に本発明は、被溶着材の位置決め及び均一な加熱が可能であって、溶融時に被溶着材のずれを生じないで溶着可能な継手形状を有する製品及びその接合方法を提供することを目的とする。
【０００９】
【課題を解決するための手段】
本発明の請求項１の形態では上述した目的を達成するために、少なくとも２つ以上の構成要素を有する組み立て品であって、これらがレーザを使用して接合される、継ぎ手部を備える組み立て品は、レーザを透過させる透過性材料と、レーザを吸収して発熱・溶融する吸収性材料とを前記構成要素として具備する。前記透過性材料の少なくとも一部分が前記吸収性材料に密着可能な、密着部を形成するように、前記透過性材料が前記吸収性材料に設置される。前記本発明の組み立て品は、前記密着部を密着させる、係合部を更に有することを特徴とする。
【００１０】
この様に構成することにより、被溶着材を加圧するための治具を別に必要とせず、これにより組み立て品から製作される製品の小型化、高機能化に対応可能である。また、溶着面の位置決めが可能である。
【００１１】
本発明の請求項２の形態では、上記請求項１の形態において、前記係合部がスナップフィットであることを特徴とする。
【００１２】
本発明の請求項３の形態では、上記請求項１の形態において、前記係合部が、突起と、前記突起に嵌合する収容部とを具備することを特徴とする。
【００１３】
上記請求項２及び３の形態は、透過性材料を吸収性材料に取り付けて位置決めするための形態を具体化する。
【００１４】
本発明の請求項４の形態では、上記請求項１から３の形態のいずれか一項において、前記係合部により、前記透過性材料は前記吸収性材料に固定されることを特徴とする。
本形態によれば、透過性材料は吸収性材料に対して固定されて位置決めされる。
【００１５】
本発明の請求項５の形態では、上記請求項１から４の形態のいずれか一項において、前記密着部の少なくとも一部分が平面であることを特徴とする。
本形態によれば、透過性材料の吸収性材料に対する位置決め及び密着はより容易に且つより確実に実施出来る。
【００１６】
本発明の請求項６の形態では、上記請求項１から５の形態のいずれか一項において、前記透過性材料の前記密着部の板厚が、実質的に一定であることを特徴とする。
【００１７】
本形態によればレーザ光を、溶着部である前記密着部に均一に入射することが出来るため、前記溶着部におけるレーザの入熱は一定であり、均一な溶着を実現できるので、溶着部の信頼性を確保できる。
【００１８】
また、本発明の請求項７の形態では、上記請求項１から６の形態いずれか一項において、前記密着部にレーザが照射され、前記密着部が発熱・溶融して、前記吸収性材料と前記透過性材料が共に溶着接合されることを特徴とする。
この様に構成することにより、本発明の形態がより具体化される。
【００１９】
本発明の請求項８の形態では、請求項１から７のいずれか一項の組み立て品の組み立て方法が、前記透過性材料の少なくとも一部分が前記吸収性材料に密着可能になるように、前記透過性材料を前記吸収性材料に設置する手順と、前記係合部を係合して密着部を形成する手順と、レーザを前記透過性材料を透過して前記密着部に照射する手順と、前記密着部において、前記吸収性材料を発熱・溶融し、更に前記透過性材料を溶融して前記両材料を溶着結合する手順とを具備することを特徴とする。
【００２０】
上記の請求項１から７に記載の形態に関して説明した特徴を有する組み立て品の組み立て方法を開示する。
【００２１】
【発明の実施の形態】
以下、図１から７に基づいて本発明の種々の実施の形態の組み立て品を詳細に説明する。これらの図面では、前に説明した図８に示される要素部分と同じ又は同様である各実施の形態の各要素部分は、各図面において同じ参照符号により指定されている。
図１は、本発明に係る組み立て品の第１の実施の形態を図解的に示しており、図１（Ａ）は本発明の装置の概略的な構成の立体図であり、図１（Ｂ）は図１（Ａ）の組み立て品の側断面図である。
【００２２】
まず図１（Ａ）を参照すると、樹脂であることが好ましい本発明の組み立て品１０が示されており、組み立て品１０は、透過性材料２と、吸収性材料３とを具備おり、透過性材料２は吸収性材料３に設置されている。組み立て品１０は、図１（Ｂ）に示すように、係合部であるスナップフィット７を更に具備しており、スナップフィット７は、透過性材料２と吸収性材料３を密着するように作用している。本実施の形態において、スナップフィット７は、透過性材料２側の突起７ｂと吸収性材料３側の突起７ａが係合する形態であり、スナップフィット７の係合部は組み立て品１０の内側に位置する。本実施の形態において、透過性材料２と吸収性材料３との接触部は共に平らであり、これにより前記接触部はより良好に密着させられる。
本実施の形態のように、組み立て品１０の内側にスナップフィット７を設ける形態は、組み立て品１０の体格内で加工が可能であり、小型化のメリットが大きい。
【００２３】
透過性材料２と吸収性材料３とを接合するために、レーザ照射ヘッド４から出たレーザ１は、透過性材料２を通り、吸収性材料３に入射し、ここで吸収され発熱する。前述のように、スナップフィット７により透過性材料２と吸収性材料３は密着しているので、吸収性材料３の発熱は効率よく透過性材料２へ伝導し、お互いが溶融することで溶着部５を形成する。また図１（Ｂ）から分かるように、透過性材料２の溶着部５周りにおける板厚は一定であり、吸収性材料３へ入射するレーザ光を容易に一定に制御可能であるので、溶着部５の接合状態は均一に形成できる。
【００２４】
図２に本発明の第２の実施の形態を示している。第２の実施の形態は、上記第１の実施の形態と同様であるが、図２（Ｂ）で良く分かるように、スナップフィット７の透過性材料２側の突起７ｂが外側にあり吸収性材料３側の突起７ａが内側にある点が第１の実施の形態と相違している。この様な構成は、内部構成部品の体格に制約が無く、また成形もし易いメリットがある。
【００２５】
図３において、本発明の第３の実施の形態では、これとは別のスナップフィット７の形態を示しており、この場合のスナップフィット７は図３に示されるように、吸収性材料３側の突起７ａが透過性材料２の上面を押さえ込むような形態となっている。また図３では、組み立て品１０内にＩＣ６が収容されている。
【００２６】
更に図４において、第４の実施の形態を示す。本実施の形態において、透過性材料２には図４（Ａ）に示すように、低強度の突起８を数カ所（本実施の形態においては１０箇所）設け、吸収性材料３には図４（Ｂ）に示すように、突起８と嵌合する収容部９を設ける（本実施の形態においては突起８に対応して１０箇所）ように構成する。図４（Ｃ）は、透過性材料２と吸収性材料３とを組み合わせた状態の部分側断面図であり、低強度の突起８が吸収性材料３の内壁に接触して変形して圧入されるので、それにより保持力が発生し、透過性材料２を吸収性材料３に密着保持させる。この様な形態では、溶着部に過大な応力が作用することを回避するように形成できるので、低強度突起形状と呼ぶことが出来る。
【００２７】
図５にはこれとは別の第５の実施の形態を示す。この実施の形態においては、突起１１は吸収性材料３に設けられており、収容部１２が透過性材料２に設けられる。突起１１は収容部１２に圧入で嵌合し、それにより保持力を発揮し、透過性材料２と吸収性材料３とを密着保持させる。
この場合、突起１１が透過性材料２に設けられ、収容部１２が吸収性材料３に設けられても良い。
【００２８】
図６には更に別の第６の実施の形態を示す。この実施の形態においては、突起１４は透過性材料２に設けられており、収容部１３が吸収性材料３に設けられる。突起１４は収容部１３に圧入で嵌合し、それにより保持力を発揮し、透過性材料２と吸収性材料３とを密着保持させる。
レーザは密着している部位と圧入されている部位でエネルギを変化させて溶着することも可能で用途に応じてコントロールが実施される。
【００２９】
図７に更に別の第７の実施の形態を示す。この実施の形態においては、透過性材料２の端面１５が図７に示すように三角形状になっており、吸収性材料３に設けられたやはり三角形状の収容部１６に嵌合する。このため、透過性材料２は横方向の圧力を受けており、この圧力方向は溶着の方向とは異なる。また図７に示すように、収容部１６と端面１５との接触部に角度を持たせることにより透過性材料２が下に押さえ込まれるような力が働き、それにより保持力を発揮し、更に透過性材料２と吸収性材料３とを密着させる。端面１５及び収容部１６の形状は三角形以外の形状でも良い。
【００３０】
次に上記実施の形態の効果及び作用について説明する。
上記実施の形態に関して以下の共通の効果が期待できる。
・　被溶着材を加圧するための治具を必要とせず、これにより組み立て品から製作される製品の小型化、高機能化に対応可能である。
・　透過性材料の吸収性材料に対する位置決めは、より容易に且つより確実に実施出来る。
・　レーザ光を、溶着部である前記密着部に均一に入射することが出来るため、前記溶着部におけるレーザの入熱は一定であり、均一な溶着を実施できるので、溶着部の信頼性を確保できる。
本発明の第１の実施の形態の組み立て品により、上記共通の効果に加えて以下の効果が期待できる。
・　組み立て品の内側にスナップフィットを設ける形態は、組み立て品の体格内で加工が可能であり、小型化のメリットが大きい。
【００３１】
本発明の第２の実施の形態の組み立て品により、上記共通の効果に加えて以下の効果が期待できる。
・　内部構成部品の体格に制約が無い。
・　成形がし易い。
【００３２】
本発明の第３の実施の形態の組み立て品により、上記共通の効果に加えて以下の効果が期待できる。
・　係合部は、透過性材料又は吸収性材料のいずれか一方のみに形成すれば良い。
【００３３】
本発明の第４及び第５の実施の形態の組み立て品により、上記共通の効果に加えて以下の効果が期待できる。
・　透過性材料２又は吸収性材料３のいずれか一方に低強度部を追加し、該低強度部の圧入による保持力で固定することにより溶着部界面の密着性を向上する。
・　圧入時の応力は突起に作用し、溶着部にはほとんど作用しないので、圧入応力によるクリープ等の不具合は発生しにくい。
【００３４】
本発明の第６の実施の形態の組み立て品により、上記共通の効果に加えて以下の効果が期待できる。
・　軽圧入形状部を部分的に設置することで、溶着部全体の密着性を向上できる。
【００３５】
本発明の第７の実施の形態の組み立て品により、上記共通の効果に加えて以下の効果が期待できる。
・　ガイド的役割の係合部を設けることにより、横方向からの加圧力の方向を、透過性材料２と吸収性材料３とを密着させる方向に転換させて密着性を向上することが出来る。
【００３６】
上記の実施の形態は本発明の一例であり、本発明は、該実施の形態により制限されるものではなく、請求項に記載される事項によってのみ規定されており、上記以外の実施の形態も実施可能である。
本発明の係合部は、スナップフィットや、突起と収容部の組み合わせ以外の当業者に既知の係合部の形態であっても良い。
【図面の簡単な説明】
【図１】図１は、本発明の組み立て品の第１の実施の形態を示し、（Ａ）は概略的構成の立体図を示しており、（Ｂ）は（Ａ）の部分側断面図を示す。
【図２】図２は、本発明の組み立て品の第２の実施の形態を示し、（Ａ）は概略的構成の立体図を示しており、（Ｂ）は（Ａ）の部分側断面図を示す。
【図３】図３は、本発明の組み立て品の第３の実施の形態の概略的構成の部分側断面図を示す。
【図４】図４は、本発明の組み立て品の第４の実施の形態を示し、（Ａ）は透過性材料の平面図を示しており、（Ｂ）は吸収性材料の平面図を示しており、（Ｃ）は組み立て状態の部分側断面図を示す。
【図５】図５は、本発明の組み立て品の第５の実施の形態を示し、（Ａ）は吸収性材料の平面図を示しており、（Ｂ）は透過性材料の平面図を示しており、（Ｃ）は組み立て状態の側断面図を示す。
【図６】図６は、本発明の組み立て品の第６の実施の形態を示し、（Ａ）は吸収性材料の側断面図を示しており、（Ｂ）は透過性材料の側断面図を示しており、（Ｃ）は組み立て状態の側断面図を示す。
【図７】図７は、本発明の組み立て品の第７の実施の形態の部分側断面図を示す。
【図８】図８は、従来技術の組み立て品の例であって治具により被溶着材が密着される状態を示しており、（Ａ）は正面断面図であり、（Ｂ）は（Ａ）の側断面図である。
【符号の説明】
１…レーザ
２…透過性材料
３…吸収性材料
４…レーザ照射ヘッド
５…溶着部
６…ＩＣ
７…スナップフィット
１０…組み立て品[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin molded product and a manufacturing method thereof, and more particularly to a resin molded product bonded using a laser and a manufacturing method thereof.
[0002]
[Prior art]
In recent years, resins have been used in various fields such as parts of electric and electronic products from the viewpoint of weight reduction and cost reduction. From the viewpoint of high productivity, such resin parts are often assembled by first molding a plurality of components and bonding them together. In this case, welding is performed by welding a resin with a laser.
[0003]
Resin laser welding is a combination of a resin that is transmissive to the laser and an absorptive resin. The laser is irradiated through the transmissive resin to melt the absorption side, and the heat causes the transmission side to melt. It is a technique of melting and welding each other.
As a conventional technique, there is a method in which adhesion is improved by pressurizing a material to be welded with a transparent jig such as a glass plate or an acrylic plate, and laser is irradiated through the jig. In addition, a method has been employed in which a welding is performed by providing a flange on the material to be welded and creating a jig for pressurizing a portion other than the portion irradiated with the laser. However, in recent years, products are becoming more and more compact and highly functional, and there is a problem that it is difficult to secure a space where pressurization is possible.
[0004]
FIG. 8 shows the structure of such a conventional laser welding. In this case, the transparent material 2 and the absorbent material 3 are welded and joined by a laser. The laser 1 is irradiated from the laser irradiation head 4, and heat is generated in the absorbent material 3 to form a welded portion 5 to be bonded. In this case, in order to make the heat conduction of the absorbent material 3 to the permeable material 2 efficient, the jig 20 presses the permeable material 2 and the absorbent material 3 as the welding materials and pressurizes them. Thus, the permeable material 2 and the absorbent material 3 are brought into close contact with each other.
[0005]
Further, such a welding method is disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-105500 (see Patent Document 1). In this method, a laser welding method using a tapered joint in a hollow body is a main technique. The application of this technique has the following problems.
・ Positioning on the welding surface is difficult.
-Since the plate thickness varies depending on the part, the heat input of the laser is not uniform, and it is difficult to ensure the reliability of the welded part.
-Regardless of the presence or absence of a holding jig, the displacement occurs due to stress when melted.
Further, in automobile parts, bonding with materials having difficulty in laser transmission such as PBT (polybutylene terephthalate) is expected, and it is indispensable to uniformly irradiate the laser.
[Patent Document 1]
JP 2001-105500 A (page 3, FIG. 8)
[0006]
[Problems to be solved by the invention]
As described above, in the method for holding a material to be welded in the conventional laser welding technique, it is necessary to press and hold the material to be welded with a jig. It is not suitable for recent products that require space reduction and miniaturization and high functionality. In addition, the conventional method is sufficient for the problem of positioning accuracy, the problem of uniform heating, the problem of misalignment of the welded material due to the stress during melting, the problem of bonding of materials such as PBT that are difficult to transmit laser, etc. Not supported.
[0007]
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a product having a joint shape that can be stably pressurized and welded without a pressing jig in laser welding of a resin material, and a method for joining the product. And
[0008]
In addition to this, the present invention provides a product having a joint shape capable of positioning and uniform heating of the material to be welded and capable of being welded without causing displacement of the material to be welded at the time of melting, and a joining method thereof. With the goal.
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object in the form of claim 1 of the present invention, an assembly having at least two or more components, which are joined using a laser, is provided. Comprises as a component a transmissive material that transmits laser and an absorptive material that absorbs laser and generates heat and melts. The permeable material is placed on the absorbent material such that at least a portion of the permeable material forms an adhesion portion that can be adhered to the absorbent material. The assembly according to the present invention is further characterized in that it further has an engaging part for bringing the close contact part into close contact.
[0010]
By configuring in this way, a jig for pressurizing the material to be welded is not required, and this makes it possible to cope with downsizing and high functionality of a product manufactured from an assembly. Further, the welding surface can be positioned.
[0011]
In the form of Claim 2 of this invention, the said engaging part is a snap fit in the form of the said Claim 1, It is characterized by the above-mentioned.
[0012]
According to a third aspect of the present invention, in the first aspect, the engaging portion includes a protrusion and a receiving portion that fits into the protrusion.
[0013]
The forms of claims 2 and 3 embody a form for attaching and positioning the permeable material to the absorbent material.
[0014]
According to a fourth aspect of the present invention, in any one of the first to third aspects, the permeable material is fixed to the absorbent material by the engaging portion.
According to this embodiment, the permeable material is fixed and positioned with respect to the absorbent material.
[0015]
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, at least a part of the contact portion is a flat surface.
According to this embodiment, positioning and adhesion of the permeable material to the absorbent material can be performed more easily and more reliably.
[0016]
According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the plate thickness of the close contact portion of the permeable material is substantially constant.
[0017]
According to this embodiment, since the laser beam can be uniformly incident on the adhesion portion which is a welding portion, the heat input of the laser in the welding portion is constant, and uniform welding can be realized. Reliability can be secured.
[0018]
According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the contact portion is irradiated with a laser, the contact portion generates heat and melts, and the absorbent material and The permeable materials are welded together.
By comprising in this way, the form of this invention is actualized more.
[0019]
According to an eighth aspect of the present invention, there is provided a method for assembling an assembly according to any one of the first to seventh aspects, wherein the permeation is performed so that at least a part of the permeable material can be adhered to the absorbent material. A procedure for installing a conductive material on the absorbent material, a procedure for engaging the engaging portion to form a close contact portion, a procedure for irradiating the close contact portion with a laser through the transparent material, The adhesive portion includes a procedure of heating and melting the absorbent material, melting the permeable material, and welding and bonding the two materials.
[0020]
Disclosed is a method for assembling an assembly having the features described with respect to the above-described aspects of the invention.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the assembly of various embodiments of the present invention will be described in detail with reference to FIGS. In these drawings, each element part of each embodiment that is the same as or similar to the element part shown in FIG. 8 described above is designated by the same reference numeral in each drawing.
FIG. 1 schematically shows a first embodiment of an assembly according to the present invention, and FIG. 1 (A) is a three-dimensional view of the schematic configuration of the apparatus of the present invention, and FIG. ) Is a side sectional view of the assembly of FIG.
[0022]
Referring first to FIG. 1 (A), an assembly 10 of the present invention, preferably a resin, is shown. The assembly 10 comprises a permeable material 2 and an absorbent material 3 and is permeable. The material 2 is installed on the absorbent material 3. As shown in FIG. 1 (B), the assembly 10 further includes a snap fit 7 that is an engaging portion, and the snap fit 7 acts so that the permeable material 2 and the absorbent material 3 are in close contact with each other. doing. In the present embodiment, the snap fit 7 is a form in which the projection 7 b on the permeable material 2 side and the projection 7 a on the absorbent material 3 side are engaged, and the engaging portion of the snap fit 7 is located inside the assembly 10. To position. In this Embodiment, the contact part of the permeable material 2 and the absorptive material 3 is both flat, and, thereby, the said contact part is stuck more favorably.
As in the present embodiment, the configuration in which the snap fit 7 is provided inside the assembly 10 can be processed within the physique of the assembly 10 and has a great merit in downsizing.
[0023]
In order to join the transmissive material 2 and the absorbent material 3, the laser 1 emitted from the laser irradiation head 4 passes through the transmissive material 2 and enters the absorbent material 3, where it is absorbed and generates heat. As described above, since the permeable material 2 and the absorbent material 3 are in close contact with each other by the snap fit 7, the heat generated by the absorbent material 3 is efficiently conducted to the permeable material 2 and melts each other, thereby causing the welded portion. 5 is formed. Further, as can be seen from FIG. 1B, the plate thickness around the welded portion 5 of the permeable material 2 is constant, and the laser light incident on the absorbent material 3 can be easily controlled to be constant. 5 can be formed uniformly.
[0024]
FIG. 2 shows a second embodiment of the present invention. The second embodiment is the same as the first embodiment, but as can be seen in FIG. 2 (B), the protrusion 7b on the permeable material 2 side of the snap fit 7 is on the outside and absorbs. The point that the projection 7a on the material 3 side is inside is different from the first embodiment. Such a configuration has the advantage that there are no restrictions on the physique of the internal components and that it is easy to mold.
[0025]
In FIG. 3, in the third embodiment of the present invention, another form of snap fit 7 is shown. In this case, the snap fit 7 is on the side of the absorbent material 3 as shown in FIG. The projections 7 a are configured to hold down the upper surface of the permeable material 2. In FIG. 3, the IC 6 is accommodated in the assembly 10.
[0026]
Further, FIG. 4 shows a fourth embodiment. In the present embodiment, as shown in FIG. 4A, the permeable material 2 is provided with several low-strength protrusions 8 (10 in the present embodiment), and the absorbent material 3 has the structure shown in FIG. As shown to B), it accommodates in the protrusion 8 and the accommodating part 9 is provided (in this Embodiment, it is 10 places corresponding to the protrusion 8). FIG. 4C is a partial sectional side view of the state in which the permeable material 2 and the absorbent material 3 are combined, and the low-strength protrusion 8 contacts the inner wall of the absorbent material 3 and is deformed and press-fitted. Therefore, a holding force is generated thereby, and the permeable material 2 is held in close contact with the absorbent material 3. In such a form, since it can form so that an excessive stress may act on a welding part, it can call a low intensity | strength protrusion shape.
[0027]
FIG. 5 shows a fifth embodiment different from this. In this embodiment, the protrusion 11 is provided on the absorbent material 3, and the accommodating portion 12 is provided on the permeable material 2. The protrusion 11 is fitted into the accommodating portion 12 by press fitting, thereby exerting a holding force and holding the permeable material 2 and the absorbent material 3 in close contact with each other.
In this case, the protrusion 11 may be provided on the permeable material 2 and the accommodating portion 12 may be provided on the absorbent material 3.
[0028]
FIG. 6 shows still another sixth embodiment. In this embodiment, the protrusion 14 is provided on the permeable material 2, and the accommodating portion 13 is provided on the absorbent material 3. The protrusion 14 is press-fitted into the accommodating portion 13, thereby exerting a holding force, and holding the permeable material 2 and the absorbent material 3 in close contact with each other.
The laser can be welded by changing the energy between the close contact portion and the press-fitted portion, and control is performed according to the application.
[0029]
FIG. 7 shows still another seventh embodiment. In this embodiment, the end surface 15 of the permeable material 2 has a triangular shape as shown in FIG. 7, and is fitted into the triangular accommodating portion 16 provided in the absorbent material 3. For this reason, the permeable material 2 receives a lateral pressure, and this pressure direction is different from the welding direction. Further, as shown in FIG. 7, by providing an angle at the contact portion between the accommodating portion 16 and the end surface 15, a force is exerted so that the permeable material 2 is pressed down, thereby exerting a holding force and further transmitting. The adhesive material 2 and the absorbent material 3 are brought into close contact with each other. The shapes of the end surface 15 and the accommodating portion 16 may be shapes other than a triangle.
[0030]
Next, effects and operations of the above embodiment will be described.
The following common effects can be expected for the above embodiment.
-A jig for pressurizing the material to be welded is not required, which makes it possible to cope with downsizing and high functionality of products manufactured from assembled products.
-The positioning of the permeable material relative to the absorbent material can be performed more easily and reliably.
・ Since laser light can be uniformly incident on the adhesion part, which is a welded part, the heat input of the laser at the welded part is constant, and uniform welding can be performed, ensuring the reliability of the welded part. it can.
In addition to the above-mentioned common effects, the following effects can be expected from the assembly according to the first embodiment of the present invention.
-The form in which the snap fit is provided on the inside of the assembly can be processed within the physique of the assembly, and has the advantage of downsizing.
[0031]
In addition to the above-described common effects, the following effects can be expected from the assembly according to the second embodiment of the present invention.
・ There are no restrictions on the size of internal components.
・ Easy to mold.
[0032]
In addition to the above common effects, the following effects can be expected from the assembly according to the third embodiment of the present invention.
-An engaging part should just be formed only in any one of a permeable material or an absorptive material.
[0033]
In addition to the above-described common effects, the following effects can be expected from the assembled products of the fourth and fifth embodiments of the present invention.
-A low-strength part is added to either the permeable material 2 or the absorbent material 3, and the adhesiveness of the welded part interface is improved by fixing with a holding force by press-fitting the low-strength part.
・ The stress at the time of press-fitting acts on the protrusions and hardly on the welded part, so that problems such as creep due to the press-fitting stress are unlikely to occur.
[0034]
In addition to the above common effects, the following effects can be expected from the assembled product according to the sixth embodiment of the present invention.
・ By partially installing the light press-fitting shape part, the adhesion of the entire welded part can be improved.
[0035]
In addition to the above common effects, the following effects can be expected from the assembled product according to the seventh embodiment of the present invention.
-By providing the engaging portion having a guide role, the adhesive force can be improved by changing the direction of the applied pressure from the lateral direction to the direction in which the permeable material 2 and the absorbent material 3 are in close contact with each other.
[0036]
The above-described embodiment is an example of the present invention, and the present invention is not limited by the embodiment, and is defined only by matters described in the claims, and other embodiments are also possible. It can be implemented.
The engagement portion of the present invention may be in the form of an engagement portion known to those skilled in the art other than a snap fit or a combination of a protrusion and a housing portion.
[Brief description of the drawings]
FIG. 1 shows a first embodiment of an assembly of the present invention, (A) shows a schematic three-dimensional view, and (B) shows a partial cross-sectional view of (A). Indicates.
FIG. 2 shows a second embodiment of the assembly of the present invention, (A) shows a schematic three-dimensional view, and (B) shows a partial sectional side view of (A). Indicates.
FIG. 3 shows a partial cross-sectional side view of a schematic configuration of a third embodiment of an assembly of the present invention.
FIG. 4 shows a fourth embodiment of the assembly of the present invention, (A) shows a plan view of the permeable material, and (B) shows a plan view of the absorbent material. (C) shows the partial sectional side view of an assembly state.
FIG. 5 shows a fifth embodiment of an assembly of the present invention, (A) shows a plan view of the absorbent material, and (B) shows a plan view of the permeable material. (C) shows a sectional side view of the assembled state.
FIG. 6 shows a sixth embodiment of the assembly of the present invention, (A) shows a side sectional view of the absorbent material, and (B) shows a side sectional view of the permeable material. (C) shows a sectional side view of the assembled state.
FIG. 7 shows a partial side sectional view of a seventh embodiment of an assembly according to the present invention.
FIG. 8 is an example of a prior art assembly and shows a state in which a material to be welded is in close contact with a jig, (A) is a front sectional view, and (B) is (A). FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Laser 2 ... Transparent material 3 ... Absorbing material 4 ... Laser irradiation head 5 ... Welding part 6 ... IC
7 ... Snapfit 10 ... Assembly

Claims (8)

少なくとも２つ以上の構成要素を有する組み立て品であって、これらがレーザを使用して接合される、継ぎ手部を備える組み立て品において、この組み立て品が、
レーザを透過させる透過性材料と、
レーザを吸収して発熱・溶融する吸収性材料と、を前記構成要素として具備しており、
前記透過性材料の少なくとも一部分が前記吸収性材料に密着可能な、密着部を形成するように、前記透過性材料が前記吸収性材料に設置されており、
前記密着部を密着させる、係合部を更に有することを特徴とする組み立て品。An assembly having at least two or more components, wherein the assemblies are joined using a laser, the assembly comprising:
A transparent material that transmits the laser;
An absorptive material that absorbs a laser and generates heat and melts as a component,
The permeable material is placed on the absorbent material such that at least a portion of the permeable material is in close contact with the absorbent material to form an adhesive portion;
An assembly product further comprising an engagement part for bringing the contact part into close contact. 前記係合部がスナップフィットであることを特徴とする請求項１に記載の組み立て品。The assembly according to claim 1, wherein the engagement portion is a snap fit. 前記係合部が、
突起と、
前記突起に嵌合する収容部と、
を具備することを特徴とする請求項１に記載の組み立て品。The engaging portion is
Protrusions,
A receiving portion that fits into the protrusion;
The assembly according to claim 1, comprising: 前記係合部により、前記透過性材料は前記吸収性材料に固定されることを特徴とする請求項１から３のいずれか一項に記載の組み立て品。The assembly according to any one of claims 1 to 3, wherein the permeable material is fixed to the absorbent material by the engaging portion. 前記密着部の少なくとも一部分が平面であることを特徴とする請求項１から４のいずれか一項に記載の組み立て品。The assembly according to any one of claims 1 to 4, wherein at least a part of the contact portion is a flat surface. 前記透過性材料の前記密着部の板厚が、実質的に一定であることを特徴とする請求項１から５のいずれか一項に記載の組み立て品。The assembled product according to any one of claims 1 to 5, wherein a thickness of the close contact portion of the permeable material is substantially constant. 前記密着部にレーザが照射され、前記密着部が発熱・溶融して、前記吸収性材料と前記透過性材料が共に溶着接合されることを特徴とする請求項１から６のいずれか一項に記載の組み立て品。The laser is irradiated to the contact portion, the contact portion generates heat and melts, and the absorbent material and the transmissive material are welded and bonded together. The assembly as described. 請求項１から７のいずれか一項に記載の組み立て品の組み立て方法において、この方法が、
前記透過性材料の少なくとも一部分が前記吸収性材料に密着可能になるように、前記透過性材料を前記吸収性材料に設置する手順と、
前記係合部を係合して、密着部を形成する手順と、
レーザを前記透過性材料を透過して前記密着部に照射する手順と、
前記密着部において、前記吸収性材料を発熱・溶融し、更に前記透過性材料を溶融して前記両材料を溶着結合する手順と、
を具備することを特徴とする方法。The method for assembling an assembly according to any one of claims 1 to 7, wherein the method comprises:
Placing the permeable material on the absorbent material such that at least a portion of the permeable material is in close contact with the absorbent material;
A procedure for engaging the engaging portion to form a close contact portion;
A procedure of irradiating the contact portion with laser through the transparent material;
In the close contact portion, heat generating and melting the absorbent material, further melting the permeable material, and welding and bonding the two materials;
A method comprising the steps of:
JP2002257788A 2002-09-03 2002-09-03 Coupling structure of laser welded portion Pending JP2004090556A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008545922A (en) * 2005-05-19 2008-12-18 ノルグレン ゲーエムベーハー Fluid control device and manufacturing method thereof
JP2014518664A (en) * 2011-04-28 2014-08-07 サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング Dosing interface joining technology
WO2015144555A1 (en) * 2014-03-28 2015-10-01 Robert Bosch Gmbh Locking element, accommodating element, locking system, method for producing a locking system, and laser transmission welding method
JPWO2021220326A1 (en) * 2020-04-27 2021-11-04

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008545922A (en) * 2005-05-19 2008-12-18 ノルグレン ゲーエムベーハー Fluid control device and manufacturing method thereof
JP2014518664A (en) * 2011-04-28 2014-08-07 サノフィ−アベンティス・ドイチュラント・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング Dosing interface joining technology
US10117994B2 (en) 2011-04-28 2018-11-06 Sanofi-Aventis Deutschland Gmbh Joining technology of a dispense interface
WO2015144555A1 (en) * 2014-03-28 2015-10-01 Robert Bosch Gmbh Locking element, accommodating element, locking system, method for producing a locking system, and laser transmission welding method
JPWO2021220326A1 (en) * 2020-04-27 2021-11-04
WO2021220326A1 (en) * 2020-04-27 2021-11-04 三菱電機株式会社 Joint structure of resin members, resin housing of electrical equipment, and laser welding method
JP7278479B2 (en) 2020-04-27 2023-05-19 三菱電機株式会社 JOINT STRUCTURE OF RESIN MEMBER, RESIN CASE OF ELECTRICAL DEVICE, AND LASER WELDING METHOD

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