JP4333159B2

JP4333159B2 - Bonding structure and bonding method of thin plate adherend

Info

Publication number: JP4333159B2
Application number: JP2003045565A
Authority: JP
Inventors: 宏明高原
Original assignee: Nikon Corp
Current assignee: Nikon Corp
Priority date: 2003-02-24
Filing date: 2003-02-24
Publication date: 2009-09-16
Anticipated expiration: 2023-02-24
Also published as: JP2004258079A

Description

【０００１】
【発明の属する技術分野】
本発明は、２つの被着体の接触部以外の面に接着剤を塗布して、その接触部を接着する接着構造及び接着方法に関するものである。
【０００２】
【従来の技術】
従来、この種の接着方法は、カメラの受光センサの受光面周辺に光学系の保持用ホルダを接着する場合等に用いられ、受光センサの受光面の周辺に光学系を搭載したホルダを配置し、その位置を調整した後に、接着剤を定量塗布することによって、受光センサとホルダとの接合を行い、部組品として完成させていた。
このとき、受光センサとホルダとの境界に接着剤が流入するように、ホルダの側面に溝を設け、その溝に接着剤を塗布して、受光センサとの境界に流入させていた。
【０００３】
通常、水平面と鉛直面とが、互いに直交して接している場合に、鉛直面に接着剤を塗布すると、接着剤は、鉛直面の重力方向に沿って流れ、鉛直面と水平面との境界線に到達する。到達した接着剤は、更に重力の影響により、境界線に沿った方向に広がろうとする。
このとき、２つの面を構成する別々の部材の間に微細な間隙があると、毛細管現象により、接着剤は、その間に流れ込んでいこうとする。最終的に、その間隙に流入できるだけの接着剤が流入してしまうと、接着剤の流れが停止して、硬化が始まる。十分な時間が経過した後に、２つの部材は、予め調整された位置関係を保ったまま、接着される。
【０００４】
前述した原理に基づいて、被着物を接着剤が流れ込みやすい形状にしておくことにより、所望の位置に接着剤を誘導することができる。この原理により、接着剤が溝を伝わって接触面に流れ込み、ホルダと受光センサとが接着固定される（例えば、特許文献１）。
【０００５】
【特許文献１】
特開平０６−３３２０２８号公報（第３−４頁、第１図）
【０００６】
【発明が解決しようとする課題】
図７は、従来の接着方法を、薄板状被着体に適用しようとした場合の課題を説明する図である。
従来の接着方法は、まず、図７( ａ) に示すように、受光センサ２の接触面２ｂにホルダ１の底部１ａを接触させて、ホルダ１と受光センサ２との位置関係を調整する。
そして、図７( ｂ) に示すように、接触面２ｂ近傍に接着剤吐出用ノズル３の先端部３ｂをセットして、その先端部３ｂから接着剤３ａを吐出する。
【０００７】
このとき、接着剤を塗布する対象が特許文献１のような従来のホルダ１Ｂに設けた溝４Ｂの場合（２点鎖線で示す）には、高さが接着剤吐出用ノズル３の口径に比べて十分高い（例えば、ノズル３の口径が１. ２ｍｍ程度であるのに対して、溝４Ｂの高さ３〜４ｍｍ程度）ので、接着剤吐出用ノズル３の縦方向の位置出し精度は、ミリ単位で正確なものであれば十分である。
つまり、接着剤を溝４Ｂに確実に塗布するために、ノズル先端３ｂの上端３ｃをホルダ１Ｂに設けられた溝４Ｂの上部４ａに極力近接させようと狙いを定めたときに、たとえ、ノズルの口径と同程度（例えば、１. ２ｍｍ程度）下方向にずれてしまったとしても、受光センサ２に当接してしまうようなことはなかった。
【０００８】
しかし、ホルダ１が薄板状である場合（実線で示す）には、ホルダ１に設けた溝４の高さは、非常に低く、接着剤吐出用ノズル３の口径に比べて、同程度かそれ以下（例えば、ノズルの口径が１. ２ｍｍ程度であるのに対して、溝４の高さが１. ２ｍｍ程度又はそれ以下）になることがあった。
このとき、ノズル３の先端３ｂの上端３ｃを、ホルダ１に設けた溝４の上端４ｃに近接させようとすれば、受光センサ２の接触面２ｂに当接してしまうことはほぼ確実であり、たとえ、ノズル先端３ｂの中心３ｄをホルダ１の溝４の上部４ｃに近接させようと狙いを定めたとしても、下方向へのずれ許容距離は、ノズル３の口径の半分程度（例えば、０. ６ｍｍ程度）か、それ以下に納めなければならず、ミリ単位程度の位置出し精度では、不十分である。
【０００９】
その結果、ノズル先端３ｂが受光センサ２の接触面２ｂに必要以上に接近してしまうこととなり、ノズル先端３ｂの位置出し精度が十分でないときには、図７( ｃ) に示すように、ノズル先端３ｂが受光センサ２の接触面２ｂに当接してしまい、予め調整されたホルダ１と受光センサ２との位置関係がくるってしまう可能性があった。
また、このような極めて微細な接着作業であるので、接着作業を行う作業員には、必要以上の神経を使うことを強いる結果となる。
【００１０】
本発明の課題は、被着体を相互に位置決めした後で接着する場合に、接着剤を塗布する被着体の厚みが薄いときであっても、ノズルの位置出し精度をラフにすることができる薄板状被着体の接着構造及び接着方法を提供することである。
【００１１】
【課題を解決するための手段】
前記課題を解決するため、請求項１の発明は、薄板状の第１および第２の被着体を、厚み方向に重ねた状態で接着剤を毛細管現象により前記第１および第２の被着体の接着面に流れ込ませて一体化する、薄板状被着体の接着構造であって、前記第１の被着体は、前記接着面と対向する面から端面を介して前記接着面へ連通する案内溝を有し、前記案内溝は、前記接着面と対向する面に三角錐状の切り欠き部を有し、前記切り欠き部の稜線は、前記第１の被着体の前記端面に近づくほど、前記第１の被着体の厚み方向に奥深くなっていることを特徴とする薄板状被着体の接着構造である。
請求項２の発明は、請求項１に記載の薄板状被着体の接着構造において、前記案内溝は、前記切り欠き部を前記端面の延在する方向に沿って複数個併設されていること、を特徴とする薄板状被着体の接着構造である。
請求項３の発明は、請求項１または２に記載の薄板状被着体の接着構造において、前記切り欠き部の前記稜線は、前記端面側の一端が、前記第１の被着体の接着面に位置すること、を特徴とする薄板状被着体の接着構造である。
請求項４の発明は、薄板状の第１の被着体を第２の被着体に位置決めした状態で、接着剤によって一体化する薄板状被着体の接着構造であって、前記第１の被着体は、前記第１の被着体と前記第２の被着体との接触部に連続する前記第１の被着体の端面に形成された第１の案内溝部と、前記第１の案内溝部に連続する第２の案内溝部とを備え、前記第２の案内溝部は、前記接触部と対向する面に三角錐状の切り欠き部を有し、前記切り欠き部の稜線は、前記第１の案内溝部に近づくほど、前記第１の被着体の厚み方向に奥深くなっており、前記第２の案内溝部に前記接着剤を塗布することにより、前記第１の案内溝部を介して、前記接触部に前記接着剤を案内し、前記接触部に前記接着剤が毛細管現象により流れ込むこと、を特徴とする薄板状被着体の接着構造である。
【００１２】
請求項５の発明は、請求項４に記載の薄板状被着体の接着構造において、前記切り欠き部の前記稜線は、前記端面側の一端が、前記第１の被着体の接触部に位置すること、を特徴とする薄板状被着体の接着構造である。
【００１３】
請求項６の発明は、請求項１乃至請求項５のいずれか１項に記載の薄板状被着体の接着構造において、前記第１の被着体は、光学系を搭載したホルダーの一部であり、前記第２の被着体は、前記光学系を介した光を受光する受光部材の一部であること、を特徴とする薄板状被着体の接着構造である。
【００１４】
請求項７の発明は、薄板状の第１および第２の被着体を、厚み方向に重ねた状態で接着剤によって一体化する、薄板状被着体の接着方法であって、前記第１および第２の被着体の接着面と対向する面から端面を介して前記接着面へ連通する案内溝を有する前記第１の被着体を、前記第２の被着体に重ね合わせる工程と、前記案内溝の前記対向する面に形成された三角錐状の切り欠き部に、前記接着剤を滴下する工程と、前記接着剤を、前記第１の被着体の前記端面に近づくほど前記第１の被着体の厚み方向に奥深くなるように形成された前記切り欠き部の稜線に沿って、前記接着面に案内させる工程と、前記接着剤と、毛細管現象により前記接着面に流し込む工程と、を含むことを特徴とする薄板状被着体の接着方法である。
請求項８の発明は、薄板状の第１の接着体を第２の接着体に位置決めした状態で、接着剤によって一体化する薄板状被着体の接着方法であって、前記第１の被着体と前記第２の被着体との接触部に連続する前記第１の被着体の端面に形成された第１の案内溝部と、その第１の案内溝部に連続して前記接触部と対向する面に形成された第２の案内溝部とを備えた前記第１の被着体を、前記第２の被着体に位置決めする位置決め工程と、前記第２の案内溝部に形成された三角錐状の切り欠き部に、前記接着剤を塗布する接着剤塗布工程と、前記切り欠き部に塗布した接着剤が、前記第１の被着体の前記端面に近づくほど前記第１の被着体の厚み方向に奥深くなるように形成された前記切り欠き部の稜線と前記第１の案内溝部とを介して、前記接触部に案内され、毛細管現象により前記接触部に流れ込んで前記第１の被着体と前記第２の被着体とを接着する接着工程と、を備える薄板状被着体の接着方法である。
【００１５】
【発明の実施の形態】
以下、図面等を参照して、本発明の実施の形態について、さらに詳しく説明する。
（第１実施形態）
図１は、本発明による薄板状被着体の接着構造の第１の実施形態を示す斜視図、図２は、第１の実施形態に係る薄板状被着体の接着動作（接着方法）を説明する図である。
【００１６】
第１の実施形態は、図１（ａ）に示すように、薄板状のホルダ（第１の被着体）１を、受光センサ（第２の被着体）２に位置決めした状態で、ホルダ１と受光センサ２との接触部に接着剤３を浸入させて一体化する接着構造である。
ホルダ１は、図１（ｂ）に示すように、底面１ａ、その底面１ａの接する側面１ｂ、底面１ａに対向する上面１ｃを備えており、上面１ｃから側面１ｂを経て底面１ａにかけて、案内溝部４０が設けられている。
【００１７】
この案内溝部４０は、ホルダ１と受光センサ２との接触部に連続する、ホルダ１の端面に形成された第１の案内溝部４０Ａと、第１の案内溝部４０Ａに連続する第２の案内溝部４０Ｂとを備え、第２の案内溝部４０Ｂに接着剤を塗布することにより、第１の案内溝部４０Ａを介して、接触部に接着剤を案内するようにしたものである。
【００１８】
第２の案内溝部４０Ｂは、１対の斜面４０ｂ、４０ｃからなり、ホルダ１の上面１ｃに１つの頂点４０ａがあり、上面１ｃと側面１ｂとが交わる稜線（角）には、頂点４０ｄ、４０ｆがあり、さらに、ホルダ１の内部には、１つの頂点４０ｅがある。従って、第２の案内溝部４０Ｂは、頂点４０ａから頂点４０ｄ、４０ｅ、４０ｆにかけて、三角錐状の切り欠き部のように形成されている。
そして、第２の案内溝部４０Ｂは、頂点４０ａを含む三角錐状の切り欠き部の各々の斜面４０ｂ、４０ｃの面積は、頂点４０ａから側面１ｂに近づくほど広くなっており、また、各々の斜面４０ｂ、４０ｃが交わる稜線（角）も、頂点４０ａから頂点４０ｅに近づくほど、ホルダ１の厚み方向に奥深くなっている。
【００１９】
第１の案内溝部４０Ａは、１対の側面４０ｇ、４０ｈからなり、ホルダ１の内部には、１つの頂点４０ｅがあり、側面１ｂと底面１ａとが交わる稜線（角）には２つの頂点４０ｉ、４０ｋがあり、さらに、底面１ａには、もう１つの頂点４０ｊがある。従って、第１の案内溝部４０Ａは、３つの頂点４０ｄ、４０ｅ、４０ｆで形成されるＶ形溝から、底面１ａにかけては、２つの矩形の側面４０ｇ、４０ｈからなる切り欠き部のように形成されている。
このとき、第１の案内溝部４０Ａでは、頂点４０ｄ、４０ｅ、４０ｆから底面１ａにかけて形成される切り欠き部となる側面４０ｇ、４０ｈは、底面１ａに対して鈍角を成していてもよいし、鋭角又は直角でもよい。
【００２０】
次に、ホルダ１と受光センサ２との接着方法について説明する。
まず、ホルダ１の底面１ａに位置する溝部４０の頂点４０ｉ、４０ｊ、４０ｋを、受光センサ２上の接触面２ａと接触させて、ホルダ１と受光センサ２との位置関係の調整を行う（位置決め工程）。
【００２１】
そして、図２（ａ）に示すように、第２の案内溝部４０Ｂに接着ノズル３を近接させ、接着ノズル３の先端部３ｂから吐出した接着剤３ａを、第２の案内溝部４０Ｂに滴下することによって塗布する（接着剤塗布工程）。
すると、接着剤３ａは、第２の案内溝部４０Ｂの各々の斜面４０ｂ、４０ｃ及び各々の斜面４０ｂ、４０ｃが交わる稜線（角）に沿って、側面１ｂの方へ流れていき、やがて、第１の案内溝部４０Ａの各々の斜面４０ｂ、側面４０ｇが交わる稜線（角）、又は、同じく、各々の斜面４０ｃ、側面４０ｈが交わる稜線（角）にまで到達する。
【００２２】
その後、図２（ｂ）に示すように、接着剤３ａは、前記２本の稜線を越えて接触面２ａの下方へ流れていき、やがて、第１の案内溝部４０Ａの２つの側面４０ｇ、４０ｈと底面１ａとが交わる稜線（角）まで到達する。
接触面２ａと第１の案内溝部４０Ａの頂点４０ｉ，４０ｊ，４０ｋとの間には微小な隙間があるので、毛細管現象により、接着剤３ａは、さらに接触面２ａと底面１ａとの境界に流れ込み、ホルダ１と受光センサ２とを接着する（接着工程）。
【００２３】
このとき、接着ノズル３により塗布される接着剤３ａの塗布量が少なくても、溝部の頂点４０ｉ，４０ｊ，４０ｋと接触面２ｂとの間が微小な隙間であるので、毛細管現象により、接触面２ａと底面１ａとの境界に安定して流入することができる。
なお、側面１ｂのホルダ１の反対側の側面にも、同様の溝部があり、接着剤の滴下による塗布は、反対の溝部に対しても行う。
【００２４】
第１実施形態によれば、第１の案内溝部４０Ａに連続する第２の案内溝部４０Ｂを備え、その第２の案内溝部４０Ｂに接着剤３ａを塗布することにより、第１の案内溝部４０Ａを介して、接触面２ａに接着剤３ａを案内するようにしたので、ホルダ１の接着部分が薄板状であっても、ホルダ１と受光センサ２とを安定して固着することができる。
【００２５】
（第２実施形態）
図３は、本発明の第２の実施形態であるホルダと受光センサとの接着構造を示す拡大斜視図である。
なお、以下に説明する各実施形態では、前述した第１実施形態と同様な機能を果たす部分には、同一の符号又は末尾に統一した符号を付して、重複する説明や図面を適宜省略する。
図３において、案内溝部５０は、単独では第１の実施形態の案内溝部４０と同形状の溝であり、横方向に複数個（ここでは、３個）並設されている。
【００２６】
第２実施形態によれば、図３中の上面１ｃに形成された中央の案内溝部５０に、ノズル３の先端部をセットして、そのノズル３より接着剤を吐出して滴下すると、たとえ、ノズル先端の横方向の位置出し精度がラフなものであったとしても、左右どちらかの案内溝部５０に接着剤を塗布できれば、第１の実施形態と同様の工程を経て、ホルダ１と受光センサ２とを固着することができる。
【００２７】
（第３実施形態）
図４は、本発明の第３の実施形態であるホルダと受光センサとの接着構造を示す拡大斜視図である。
第３の実施形態の案内溝部６０は、第１実施形態の案内溝部４０の頂点４０ｅと頂点４０ｊとを一致させて、頂点６０ｊとした形態である。
【００２８】
第３実施形態によれば、斜面６０ｂと斜面６０ｃとが交わってできる稜線の上面１ｃとの間のなす角が、第１実施形態の斜面４０ｂと斜面４０ｃとが交わってできる稜線の上面１ｃとの間のなす角よりも大きくなるので、接着剤の流れる速度が速くなるり、接着までの時間を短縮できるというメリットがある。
【００２９】
（参考例）
図５は、本発明の参考例であるホルダと受光センサとの接着構造を示す拡大斜視図である。
本参考例の案内溝部７０は、ホルダ１と受光センサ２との接触部に連続する、ホルダ１に形成された円柱状の第１の案内溝部７０Ａと、第１の案内溝部７０Ａに連続する逆円錐台状の第２の案内溝部７０Ｂとを備え、第２の案内溝部７０Ｂに接着剤を塗布することにより、第１の案内溝部７０Ａを流れて、接触面２ａに接着剤を案内するようにしたものである。
【００３０】
本参考例によれば、ホルダ１の端面の周辺に、作業スペースがないような場合にも、ホルダ１と受光センサ２とを固着することができる。
【００３１】
（第４実施形態）
図６は、本発明の第４の実施形態であるホルダと受光センサとの接着構造を示す拡大斜視図である。
第４の実施形態の案内溝部８０は、ホルダ１と受光センサ２との接触部に連続する、ホルダ１の端面に形成された１個の第１の案内溝部８０Ａと、第１の案内溝部８０Ａに連続する３個の第２の案内溝部８０Ｂとを備え、第２の案内溝部４０Ｂのいずれかに接着剤を塗布することにより、第１の案内溝部８０Ａを流れて、接触部に接着剤を案内するようにしたものである。
【００３２】
第４実施形態によれば、図６中の上面１ｃに形成された中央の案内溝部８０Ｂに、ノズル３の先端部をセットして、そのノズル３より接着剤を吐出して滴下すると、たとえ、ノズル先端の横方向の位置出し精度がラフなものだったとしても、左右のどちらかの案内溝部８０Ｂに接着剤を塗布できれば、ホルダ１と受光センサ２とを固着することができる。しかも、第１の案内溝部８０Ａは、中央にあるので、接着する位置を常に一定にすることができる。
【００３３】
（変形形態）
以上説明した実施形態に限定されることなく、種々の変形や変更が可能であって、それらも本発明の均等の範囲内である。
第３実施形態の案内溝部６０も、第２実施形態の案内溝部５０のように、複数個設けるようにしてもよい。
【００３４】
【発明の効果】
以上詳しく説明したように、本発明によれば、第１の案内溝部に連続する第２の案内溝部を備え、その第２の案内溝部に接着剤を塗布することにより、第１の案内溝部を介して、接触部に接着剤を案内するようにしたので、第１の被着体が薄板状であっても、接着剤を塗布するノズル先端を第２の被着体に接近させた際に不用意に当接してしまうようなことはなく、第１及び第２の被着体を安定して固着することができる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態による受光検知装置の接着構造を示す斜視図であり、図１（ａ）は全体斜視図、図１（ｂ）は、図１（ａ）中のホルダと受光センサとの接触部分を示す拡大斜視図である。
【図２】図１に示すホルダと受光センサとの接触部分を示す拡大側面図である。
【図３】本発明の第２の実施形態であるホルダと受光センサとの接触部分を示す拡大斜視図である。
【図４】本発明の第３の実施形態であるホルダと受光センサとの接触部分を示す拡大斜視図である。
【図５】本発明の参考例であるホルダと受光センサとの接触部分を示す拡大斜視図である。
【図６】本発明の第４の実施形態であるホルダと受光センサとの接触部分を示す拡大斜視図である。
【図７】従来の接着方法を、薄板状被着体に適用しようとした場合の課題を説明する図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an adhesion structure and an adhesion method in which an adhesive is applied to a surface other than the contact part of two adherends and the contact part is adhered.
[0002]
[Prior art]
Conventionally, this type of bonding method is used when, for example, a holder for holding an optical system is bonded around the light receiving surface of a light receiving sensor of a camera, and a holder equipped with an optical system is disposed around the light receiving surface of the light receiving sensor. After adjusting the position, the light receiving sensor and the holder were joined by quantitatively applying an adhesive to complete the assembly.
At this time, a groove is provided on the side surface of the holder so that the adhesive flows into the boundary between the light receiving sensor and the holder, and an adhesive is applied to the groove to flow into the boundary with the light receiving sensor.
[0003]
Normally, when the horizontal plane and the vertical plane are in contact with each other at right angles, if the adhesive is applied to the vertical plane, the adhesive flows along the direction of gravity of the vertical plane, and the boundary line between the vertical plane and the horizontal plane To reach. The reached adhesive tends to spread in the direction along the boundary line due to the influence of gravity.
At this time, if there is a fine gap between the separate members constituting the two surfaces, the adhesive tends to flow between them due to capillary action. Eventually, if enough adhesive flows into the gap, the flow of the adhesive stops and curing begins. After sufficient time has passed, the two members are bonded together while maintaining a pre-adjusted positional relationship.
[0004]
Based on the principle described above, the adhesive can be guided to a desired position by making the adherend into a shape in which the adhesive can easily flow. By this principle, the adhesive flows along the groove and flows into the contact surface, and the holder and the light receiving sensor are bonded and fixed (for example, Patent Document 1).
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 06-332028 (page 3-4, FIG. 1)
[0006]
[Problems to be solved by the invention]
FIG. 7 is a diagram for explaining a problem when the conventional bonding method is applied to a thin plate-shaped adherend.
In the conventional bonding method, first, as shown in FIG. 7A, the bottom 1 a of the holder 1 is brought into contact with the contact surface 2 b of the light receiving sensor 2 to adjust the positional relationship between the holder 1 and the light receiving sensor 2.
Then, as shown in FIG. 7B, the tip 3b of the adhesive discharge nozzle 3 is set near the contact surface 2b, and the adhesive 3a is discharged from the tip 3b.
[0007]
At this time, when the target to which the adhesive is applied is the groove 4B provided in the conventional holder 1B as shown in Patent Document 1 (indicated by a two-dot chain line), the height is compared with the diameter of the nozzle 3 for discharging the adhesive. (For example, the diameter of the nozzle 3 is about 1.2 mm, while the height of the groove 4B is about 3 to 4 mm), the positioning accuracy in the vertical direction of the adhesive discharge nozzle 3 is in millimeters. It is sufficient if the unit is accurate.
That is, when the aim is to bring the upper end 3c of the nozzle tip 3b as close as possible to the upper part 4a of the groove 4B provided in the holder 1B in order to reliably apply the adhesive to the groove 4B, even if the nozzle Even if it deviated downward as much as the aperture (for example, about 1.2 mm), it did not come into contact with the light receiving sensor 2.
[0008]
However, when the holder 1 has a thin plate shape (indicated by a solid line), the height of the groove 4 provided in the holder 1 is very low, which is about the same as or smaller than the diameter of the adhesive discharge nozzle 3. In some cases (for example, the nozzle diameter is about 1.2 mm, whereas the height of the groove 4 is about 1.2 mm or less).
At this time, if it is attempted to bring the upper end 3c of the tip 3b of the nozzle 3 closer to the upper end 4c of the groove 4 provided in the holder 1, it is almost certain that it will come into contact with the contact surface 2b of the light receiving sensor 2. Even if the aim is to bring the center 3d of the nozzle tip 3b close to the upper part 4c of the groove 4 of the holder 1, the allowable deviation distance in the downward direction is about half the diameter of the nozzle 3 (for example, about 0.3. Positioning accuracy of about millimeters is not sufficient.
[0009]
As a result, the nozzle tip 3b approaches the contact surface 2b of the light receiving sensor 2 more than necessary, and when the positioning accuracy of the nozzle tip 3b is not sufficient, as shown in FIG. May come into contact with the contact surface 2b of the light receiving sensor 2, and the positional relationship between the holder 1 and the light receiving sensor 2 adjusted in advance may be brought about.
Moreover, since it is such a very fine bonding operation, the worker who performs the bonding operation is forced to use more nerves than necessary.
[0010]
An object of the present invention is to make the positioning accuracy of the nozzle rough even when the adherends are bonded after positioning them even if the adherend to which the adhesive is applied is thin. An object is to provide a bonding structure and bonding method for a thin plate-shaped adherend.
[0011]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention of claim 1 is characterized in that the first and second adherends are laminated by laminating the first and second adherends in the thickness direction by a capillary phenomenon. An adhesion structure of a thin plate-shaped adherend that flows and integrates into an adhesion surface of a body, wherein the first adherend communicates with the adhesion surface from the surface facing the adhesion surface via an end surface. a guide groove to possess, the guide groove, the adhesion surface which faces have a triangular pyramid shape notch, ridge of the notch is in the said end face of the first adherend The adhesion structure of a thin plate-shaped adherend is characterized in that the closer to the thickness, the deeper the depth in the thickness direction of the first adherend .
According to a second aspect of the present invention, in the adhesion structure of the thin plate-shaped adherend according to the first aspect , a plurality of the guide grooves are provided along the extending direction of the end face. a bonding structure of thin plate adherend, wherein.
According to a third aspect of the present invention, in the adhesion structure of the thin plate-shaped adherend according to the first or second aspect, one end on the end face side of the ridge line of the notch is bonded to the first adherend. It is the adhesion structure of the thin-plate-like adherend characterized by being located on the surface .
The invention of claim 4 is an adhesive structure for a thin plate-shaped adherend that is integrated by an adhesive in a state where the thin plate-shaped first adherend is positioned on the second adherend. The adherend includes a first guide groove formed on an end surface of the first adherend that is continuous with a contact portion between the first adherend and the second adherend, and the first adherend. A second guide groove portion continuous to the one guide groove portion, and the second guide groove portion has a triangular pyramid-shaped notch portion on a surface facing the contact portion, and a ridge line of the notch portion is The closer to the first guide groove portion, the deeper the depth in the thickness direction of the first adherend, and by applying the adhesive to the second guide groove portion, the first guide groove portion is thin plates through it, said guiding the adhesive to the contact portion, the adhesive agent to the contact portion to flow by capillary action, characterized by It is a bonding structure of the adherend.
[0012]
According to a fifth aspect of the present invention, in the adhesion structure of the thin plate-shaped adherend according to the fourth aspect, the ridgeline of the cutout portion has one end on the end face side as a contact portion of the first adherend. It is the adhesion structure of the thin-plate-shaped to-be-adhered body characterized by being located.
[0013]
The invention of claim 6 is the bonding structure of thin plate adherend according to any one of claims 1 to 5, wherein the first adherend, part of the holder equipped with an optical system And the second adherend is a part of a light receiving member that receives light via the optical system, and has a thin plate adherend bonding structure.
[0014]
The invention of claim 7 is a method for adhering a thin plate-shaped adherend, wherein the thin plate-shaped first and second adherends are integrated with an adhesive in a state where they are stacked in the thickness direction. And a step of superimposing the first adherend having a guide groove communicating from the surface facing the adhesion surface of the second adherend to the adhesion surface via the end surface on the second adherend; , Dropping the adhesive into a triangular pyramid-shaped notch formed on the opposing surface of the guide groove, and the adhesive closer to the end face of the first adherend. A step of guiding the adhesive surface along a ridgeline of the notch formed so as to be deep in the thickness direction of the first adherend, and a step of pouring the adhesive surface by the adhesive and a capillary phenomenon A method for adhering a thin plate-shaped adherend.
The invention of claim 8 is a method for adhering a thin plate-shaped adherend that is integrated with an adhesive in a state in which the thin plate-shaped first adhesive body is positioned on the second adhesive body, wherein A first guide groove formed on an end surface of the first adherend that is continuous with a contact portion between the adherend and the second adherend, and the contact portion that is continuous with the first guide groove. A positioning step of positioning the first adherend including the second guide groove formed on the surface facing the second adherend on the second adherend, and the second guide groove formed on the second guide groove An adhesive application process for applying the adhesive to the triangular pyramid-shaped notch , and the first coated object as the adhesive applied to the notch approaches the end surface of the first adherend. through adherend the notch ridge of which is formed so as deep in the thickness direction of said first guide groove, the contact It is guided in a bonding method of the thin plate adherend and a bonding step of bonding the second adherend to the first adherend flows to the contact portion by capillary action.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.
(First embodiment)
FIG. 1 is a perspective view showing a first embodiment of a thin plate adherend bonding structure according to the present invention, and FIG. 2 shows a thin plate adherend bonding operation (bonding method) according to the first embodiment. It is a figure explaining.
[0016]
In the first embodiment, as shown in FIG. 1 (a), a holder in a state where a thin plate-like holder (first adherend) 1 is positioned on a light receiving sensor (second adherend) 2. 1 is an adhesive structure in which an adhesive 3 is infiltrated into a contact portion between 1 and the light receiving sensor 2 to be integrated.
As shown in FIG. 1 (b), the holder 1 includes a bottom surface 1a, a side surface 1b in contact with the bottom surface 1a, and a top surface 1c facing the bottom surface 1a. The guide groove portion extends from the top surface 1c to the bottom surface 1a through the side surface 1b. 40 is provided.
[0017]
The guide groove 40 includes a first guide groove 40A formed on the end surface of the holder 1 that is continuous with the contact portion between the holder 1 and the light receiving sensor 2, and a second guide groove that is continuous with the first guide groove 40A. 40B, and the adhesive is guided to the contact portion through the first guide groove 40A by applying the adhesive to the second guide groove 40B.
[0018]
The second guide groove portion 40B is composed of a pair of inclined surfaces 40b and 40c. There is one apex 40a on the upper surface 1c of the holder 1, and apexes 40d and 40f are on the ridgeline (corner) where the upper surface 1c and the side surface 1b intersect. Furthermore, inside the holder 1, there is one vertex 40e. Therefore, the second guide groove 40B is formed like a triangular pyramid-shaped notch from the vertex 40a to the vertices 40d, 40e, and 40f.
In the second guide groove 40B, the area of each inclined surface 40b, 40c of the triangular pyramid-shaped notch including the apex 40a becomes wider as it approaches the side surface 1b from the apex 40a. The ridgeline (corner) where 40b and 40c intersect also becomes deeper in the thickness direction of the holder 1 as it approaches the vertex 40e from the vertex 40a.
[0019]
The first guide groove portion 40A includes a pair of side surfaces 40g and 40h. The holder 1 has one vertex 40e inside the holder 1, and two vertices 40i at the ridgeline (corner) where the side surface 1b and the bottom surface 1a intersect. , 40k, and the bottom surface 1a has another vertex 40j. Accordingly, the first guide groove 40A is formed like a notch formed by two rectangular side surfaces 40g and 40h from the V-shaped groove formed by the three apexes 40d, 40e, and 40f to the bottom surface 1a. ing.
At this time, in the first guide groove portion 40A, the side surfaces 40g and 40h serving as notches formed from the apexes 40d, 40e, and 40f to the bottom surface 1a may form an obtuse angle with respect to the bottom surface 1a. It may be an acute angle or a right angle.
[0020]
Next, a method for bonding the holder 1 and the light receiving sensor 2 will be described.
First, the apexes 40i, 40j, and 40k of the groove portion 40 located on the bottom surface 1a of the holder 1 are brought into contact with the contact surface 2a on the light receiving sensor 2 to adjust the positional relationship between the holder 1 and the light receiving sensor 2 (positioning). Process).
[0021]
Then, as shown in FIG. 2A, the adhesive nozzle 3 is brought close to the second guide groove portion 40B, and the adhesive 3a discharged from the tip portion 3b of the adhesive nozzle 3 is dropped into the second guide groove portion 40B . applied by (adhesive application step).
Then, the adhesive 3a flows toward the side surface 1b along the ridgelines (corners) where the slopes 40b and 40c of the second guide groove portion 40B and the slopes 40b and 40c intersect, and eventually, the first Each of the guide grooves 40A reaches a ridge line (corner) where the slopes 40b and the side surfaces 40g intersect, or similarly, reaches a ridge line (corner) where the slopes 40c and the side surfaces 40h intersect.
[0022]
After that, as shown in FIG. 2 (b), the adhesive 3a flows over the two ridge lines and below the contact surface 2a, and eventually, the two side surfaces 40g, 40h of the first guide groove portion 40A. And reach the ridgeline (corner) where the bottom surface 1a intersects.
Since there are minute gaps between the contact surface 2a and the apexes 40i, 40j, 40k of the first guide groove 40A, the adhesive 3a further flows into the boundary between the contact surface 2a and the bottom surface 1a due to capillary action. Then, the holder 1 and the light receiving sensor 2 are bonded (bonding process).
[0023]
At this time, even if the application amount of the adhesive 3a applied by the adhesive nozzle 3 is small, the contact surfaces 2b are formed by capillarity because the gaps between the apexes 40i, 40j, 40k of the groove portions and the contact surfaces 2b are minute. It is possible to stably flow into the boundary between 2a and the bottom surface 1a.
In addition, the same groove part exists also in the side surface on the opposite side of the holder 1 of the side surface 1b, and application | coating by dripping of an adhesive agent is also performed with respect to an opposite groove part.
[0024]
According to the first embodiment, the first guide groove portion 40B is provided with the second guide groove portion 40B continuous to the first guide groove portion 40A, and the first guide groove portion 40A is applied to the second guide groove portion 40B by applying the adhesive 3a. Thus, since the adhesive 3a is guided to the contact surface 2a, the holder 1 and the light receiving sensor 2 can be stably fixed even if the bonded portion of the holder 1 is a thin plate.
[0025]
(Second Embodiment)
FIG. 3 is an enlarged perspective view showing a bonding structure between the holder and the light receiving sensor according to the second embodiment of the present invention.
In each embodiment described below, parts having the same functions as those in the first embodiment described above are denoted by the same reference numerals or unified reference numerals at the end, and repeated descriptions and drawings are appropriately omitted. .
In FIG. 3, the guide groove portion 50 is a groove having the same shape as the guide groove portion 40 of the first embodiment alone, and a plurality of (here, three) guide groove portions 50 are provided side by side.
[0026]
According to the second embodiment, when the tip of the nozzle 3 is set in the central guide groove 50 formed on the upper surface 1c in FIG. 3 and the adhesive is discharged from the nozzle 3 and dropped, Even if the lateral positioning accuracy of the nozzle tip is rough, if the adhesive can be applied to either the left or right guide groove 50, the holder 1 and the light receiving sensor are subjected to the same process as in the first embodiment. 2 can be fixed.
[0027]
(Third embodiment)
FIG. 4 is an enlarged perspective view showing a bonding structure between a holder and a light receiving sensor according to a third embodiment of the present invention.
The guide groove part 60 of 3rd Embodiment is the form which made the vertex 40e and the vertex 40j of the guide groove part 40 of 1st Embodiment correspond, and was set as the vertex 60j.
[0028]
According to the third embodiment, the angle between the inclined surface 60b and the upper surface 1c of the ridge line formed by the intersection of the inclined surface 60c is the ridge line upper surface 1c formed by the intersection of the inclined surface 40b and the inclined surface 40c of the first embodiment. Since it becomes larger than the angle formed between the two, there is an advantage that the speed at which the adhesive flows can be increased and the time until the bonding can be shortened.
[0029]
( Reference example )
FIG. 5 is an enlarged perspective view showing a bonding structure between a holder and a light receiving sensor, which is a reference example of the present invention.
The guide groove portion 70 of the present reference example has a cylindrical first guide groove portion 70A formed in the holder 1 that is continuous with the contact portion between the holder 1 and the light receiving sensor 2, and a reverse that is continuous with the first guide groove portion 70A. A frustoconical second guide groove part 70B, and by applying an adhesive to the second guide groove part 70B, the first guide groove part 70A flows to guide the adhesive to the contact surface 2a. It is a thing.
[0030]
According to this reference example , the holder 1 and the light receiving sensor 2 can be fixed even when there is no work space around the end face of the holder 1.
[0031]
( Fourth embodiment)
FIG. 6 is an enlarged perspective view showing an adhesion structure between a holder and a light receiving sensor according to a fourth embodiment of the present invention.
The guide groove portion 80 of the fourth embodiment includes one first guide groove portion 80A formed on the end surface of the holder 1 and the first guide groove portion 80A, which is continuous with the contact portion between the holder 1 and the light receiving sensor 2. Three continuous guide groove portions 80B, and by applying an adhesive to any of the second guide groove portions 40B, the first guide groove portion 80A flows and the adhesive is applied to the contact portions. It is designed to guide you.
[0032]
According to the fourth embodiment, when the tip of the nozzle 3 is set in the central guide groove 80B formed on the upper surface 1c in FIG. 6 and the adhesive is discharged from the nozzle 3 and dropped, Even if the lateral positioning accuracy of the nozzle tip is rough, the holder 1 and the light receiving sensor 2 can be fixed as long as an adhesive can be applied to either the left or right guide groove 80B. In addition, since the first guide groove 80A is in the center, the bonding position can always be constant.
[0033]
(Deformation)
The present invention is not limited to the embodiment described above, and various modifications and changes are possible, and these are also within the equivalent scope of the present invention.
A plurality of guide groove portions 60 of the third embodiment may be provided as in the case of the guide groove portion 50 of the second embodiment.
[0034]
【The invention's effect】
As described above in detail, according to the present invention, the first guide groove portion is provided by providing the second guide groove portion continuous with the first guide groove portion, and applying an adhesive to the second guide groove portion. Since the adhesive is guided to the contact portion, even when the first adherend is a thin plate, the nozzle tip for applying the adhesive is brought close to the second adherend. There is no inadvertent contact, and the first and second adherends can be stably fixed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an adhesion structure of a light receiving detection device according to a first embodiment of the present invention, FIG. 1 (a) is an overall perspective view, and FIG. 1 (b) is a view in FIG. It is an expansion perspective view which shows the contact part of a holder and a light reception sensor.
FIG. 2 is an enlarged side view showing a contact portion between the holder and the light receiving sensor shown in FIG. 1;
FIG. 3 is an enlarged perspective view showing a contact portion between a holder and a light receiving sensor according to a second embodiment of the present invention.
FIG. 4 is an enlarged perspective view showing a contact portion between a holder and a light receiving sensor according to a third embodiment of the present invention.
FIG. 5 is an enlarged perspective view showing a contact portion between a holder and a light receiving sensor, which is a reference example of the present invention.
FIG. 6 is an enlarged perspective view showing a contact portion between a holder and a light receiving sensor according to a fourth embodiment of the present invention.
FIG. 7 is a diagram for explaining a problem when a conventional bonding method is applied to a thin plate-shaped adherend.

Claims

A thin plate shape in which the first and second adherends in the form of thin plates are integrated in the state of being stacked in the thickness direction by flowing an adhesive into the adhesion surfaces of the first and second adherends by capillary action. An adhesion structure of an adherend,
Said first adherend, have a guide groove communicating to the adhesive surface through the end face from the surface facing the adhesive surface,
The guide groove has a triangular pyramid-shaped notch on a surface facing the adhesive surface,
The adhesive structure of a thin plate-shaped adherend is characterized in that the ridge line of the cutout portion becomes deeper in the thickness direction of the first adherend as it approaches the end face of the first adherend. .

In the adhesion structure of the thin plate adherend according to claim 1,
A plurality of the guide grooves are provided along the extending direction of the end face,
An adhesion structure of a thin plate adherend characterized by the above.

In the adhesion structure of the thin plate adherend according to claim 1 or 2,
The ridgeline of the notch is such that one end on the end surface side is located on the bonding surface of the first adherend,
An adhesion structure of a thin plate adherend characterized by the above.

In a state where the first adherend in the form of a thin plate is positioned on the second adherend, the adhesive structure of the thin adherend is integrated by an adhesive,
The first adherend includes a first guide groove formed on an end surface of the first adherend that is continuous with a contact portion between the first adherend and the second adherend. A second guide groove portion continuous with the first guide groove portion,
The second guide groove has a triangular pyramid cutout on a surface facing the contact portion,
The ridgeline of the notch is deeper in the thickness direction of the first adherend as it approaches the first guide groove,
By applying the adhesive to the second guide groove portion, the adhesive is guided to the contact portion through the first guide groove portion, and the adhesive flows into the contact portion by capillary action. ,
An adhesion structure of a thin plate adherend characterized by the above.

In the adhesion structure of the thin plate-shaped adherend according to claim 4,
The ridgeline of the notch is such that one end on the end face side is located at a contact portion of the first adherend,
An adhesion structure of a thin plate adherend characterized by the above.

In the adhesion structure of the thin plate adherend according to any one of claims 1 to 5,
The first adherend is a part of a holder on which an optical system is mounted;
The second adherend is a part of a light receiving member that receives light via the optical system;
An adhesion structure of a thin plate adherend characterized by the above.

A thin plate-like adherend adhering method, wherein the thin plate-like first and second adherends are integrated with an adhesive in a state of being stacked in the thickness direction,
The first adherend having a guide groove that communicates from the surface facing the adhesion surface of the first and second adherends to the adhesion surface via an end surface is overlapped on the second adherend. Combining the steps,
Dropping the adhesive into a triangular pyramid cutout formed on the opposing surface of the guide groove ;
The adhesive is applied to the adhesive surface along a ridge line of the notch formed so as to become deeper in the thickness direction of the first adherend as it approaches the end surface of the first adherend. A process of guiding,
Pouring the adhesive and the adhesive surface by capillary action;
A method for adhering a thin plate adherend, comprising:

In a state where the thin plate-like first adhesive body is positioned on the second adhesive body, the thin plate-like adherend is bonded by an adhesive,
A first guide groove formed on an end surface of the first adherend that is continuous with a contact portion between the first adherend and the second adherend, and continuous with the first guide groove. A positioning step of positioning the first adherend including the second guide groove formed on the surface facing the contact portion on the second adherend;
An adhesive application step of applying the adhesive to the triangular pyramid-shaped notch formed in the second guide groove;
The ridgeline of the notch formed so that the adhesive applied to the notch becomes deeper in the thickness direction of the first adherend as it approaches the end face of the first adherend. An adhesion step in which the first adherend and the second adherend are bonded by being guided by the contact portion through the first guide groove portion and flowing into the contact portion by capillary action ;
A method for adhering a thin plate-shaped adherend.