JP3670113B2

JP3670113B2 - Self-supporting terminal and radiator using the same

Info

Publication number: JP3670113B2
Application number: JP20402097A
Authority: JP
Inventors: 俊幸山辺; 義広斎藤
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1997-07-30
Filing date: 1997-07-30
Publication date: 2005-07-13
Anticipated expiration: 2017-07-30
Also published as: JPH1154970A

Description

【０００１】
【発明の属する技術分野】
本発明は、各種電気機器に使用されているプリント基板において、機器の動作時に各種の半導体の温度上昇を抑制する放熱器をプリント基板に実装する際に用いる自立形端子およびそれを用いた放熱器に関するものである。
【０００２】
【従来の技術】
各種電気機器に使用されるプリント基板において、各種の半導体の温度上昇を放熱器により抑制しているが、その放熱器をプリント基板上に実装して半田付けする際、放熱器の傾き、倒れ、浮きなどを抑制し、半田付けする事が必要である。また半田付け後、半田付けの強度を保証する必要もある。
【０００３】
従来の放熱器は、半田付け後の強度保証や電気的なアース機能のための端子を備えており、生産時に事前にプリント基板に取付けられ、裏面で端子を折り曲げるか、治具などにより放熱器を保持して放熱器の倒れや傾き、浮きなどを抑制し半田付けをしている。
【０００４】
【発明が解決しようとする課題】
上述したように、従来の放熱器においては、プリント基板に放熱器を半田付けした後に、傾き、倒れ、浮きなどを抑制するという条件が必要であり、治具の使用、端子の折り曲げ等の手間をかけてその条件づくりを行っている。
【０００５】
本発明は、従来の放熱器が有する、生産時に手間がかかるという課題を考慮し、手間をかけずに、倒れ、傾き、浮きなどを抑制して放熱器をプリント基板に装着でき、半田付け後の装着強度を十分に有する自立形端子およびそれを用いた放熱器を提供することを目的とするものである。
【０００６】
【課題を解決するための手段】
上述した課題を解決するために、本願の請求項１記載の放熱器は、基板に開けられたひとつの貫通孔に同時に挿入され、それらの先端部が前記基板の挿入側の面に対して反対側の面に露出するように並列的に形成された２本の貫通部と、前記基板の前記貫通部が挿入される側の面に当接することにより、前記貫通部の挿入深さを決める当たり面部とを有する自立形端子と、
前記基板に開けられた別の貫通孔に、前記貫通部の前記貫通孔への挿入に先だって挿入されることによって、前記貫通部の前記貫通孔への挿入の案内をする案内端子とを備え，
前記自立形端子の先端部は、その外側面が先端に近づくほど内側にテーパーしており、前記外側面の前記先端と反対側には、返り面部が形成され、前記２本の貫通部は、互いに接近するように弾性変形して前記ひとつの貫通孔に同時に挿入された後、前記弾性変形の全部または一部が除去されて離間し、前記返り面部は、挿入後に前記反対側の面と相対することによって、前記貫通部を前記貫通孔から抜こうとする力が作用しても、前記反対側の面と当接して、前記貫通部が前記貫通孔から抜かれるのを防止して、前記基板に取り付け固定されるようにしたことを特徴とするものである。
【０００７】
本願の請求項２記載の放熱器は、請求項１記載の放熱器において、前記案内端子の先端は、前記当たり面部が形成する面を基準にして、前記２本の貫通部の先端より突出していることを特徴とするものである。
【０００８】
本願の請求項３記載の放熱器は、請求項１記載の放熱器において、前記自立形端子は、前記基板に開けられた別の貫通孔に、前記貫通部の前記貫通孔への挿入に先だって挿入されることによって、前記貫通部の前記貫通孔への挿入の案内をする案内部を備え、
前記案内端子は、前記案内部として機能することを特徴とするものである。
【０００９】
本願の請求項４記載の放熱器は、請求項１記載の放熱器において、前記自立形端子と前記案内端子とをそれぞれ２個備え、前記２個の案内端子は、前記各端子が形成する四角形の対角に配置されていることを特徴とするものである。
【００１０】
本願の請求項５記載の放熱器は、請求項３記載の放熱器において、前記自立形端子を、複数個備えることを特徴とするものである。
【００１１】
本願の請求項６記載の放熱器は、請求項５記載の放熱器において、前記複数個備えることとは、２個備えることであり、前記２個の案内部は、前記貫通部と前記案内部とが形成する四角形の対角に配置されていることを特徴とするものである。
【００１２】
本願の請求項７記載の放熱器は、請求項１記載の放熱器において、前記自立形端子および／または前記案内端子と、放熱器本体とを一体構造とすることを特徴とするものである。
【００１３】
本願の請求項８記載の自立形端子は、基板に開けられたひとつの貫通孔に同時に挿入され、それらの先端部が前記基板の挿入側の面に対して反対側の面に露出するように並列的に形成された２本の貫通部と、
前記基板の前記貫通部が挿入される側の面に当接することにより、前記貫通部の挿入深さを決める当たり面部と、
前記基板に開けられた別の貫通孔に、前記貫通部の前記貫通孔への挿入に先だって挿入されることによって、前記貫通部の前記貫通孔への挿入の案内をする案内部とを備え、
前記先端部は、その外側面が先端に近づくほど内側にテーパーしており、前記外側面の前記先端と反対側には、返り面部が形成され、前記２本の貫通部は、互いに接近するように弾性変形して前記ひとつの貫通孔へ同時に挿入された後、前記弾性変形の全部または一部が除去されて離間し、前記返り面部は、挿入後に前記反対側の面と相対することによって、前記貫通部を前記貫通孔から抜こうとする力が作用しても、前記反対側の面と当接して、前記貫通部が前記貫通孔から抜かれるのを防止して、前記基板に取り付け固定されるようにしたことを特徴とするものである。
【００２０】
【発明の実施の形態】
以下に、本発明の実施の形態を図面を参照して説明する。
【００２１】
（第１の実施の形態）
図１は本発明の第１の実施の形態における自立形端子の構成を示す全体構成図である。
【００２２】
図１において、自立形端子３は、２本の並列に配置された突起である貫通部４を有した平板状の端子であり、放熱器本体１の下部に固着され、基板２に設けられた貫通孔２ａに貫通部４が挿入箝合されることによって、放熱器本体１を基板２上に実装状態で保持するものである。貫通部４は、逆Ｕ字型の二又形状をしており、この二又が閉じるように力を与えると容易に弾性変形するように形成されている。貫通部４の先端部５は、くさび形をしており、くさび形の先端と対向する辺にあたる部位は、返り面部７を形成している。貫通部４の外側には、当たり面部６が返り面部７と対向して平行に形成されており、対向している当たり面部６と返り面部７との距離は、基板２の厚みと実質的に等しくなっている。
【００２３】
次に、このような本実施の形態の動作を説明する。
【００２４】
放熱器本体１の下部に固着された自立形端子３の先端部５を基板２に開けられた貫通孔２ａの入口部にあてがい、挿入方向に力をかけると、先端部５のテーパーにより、貫通部４は、その二又部が閉じるように弾性変形して、貫通孔２ａに挿入される。貫通部４の挿入は、当たり面部６が基板２と当接することによって止まり、この時、先端部５は、基板２の反対側の面に完全に露出し、返り面部７と当たり面部６とで基板２を挟み込んだ状態となる。こうなることによって、基板２の反対側の面に返り面部７が当接するので、貫通部４を貫通孔２ａから抜こうとする力が作用しても、抜けなくなる。このとき貫通部４の貫通孔２ａの中にある部分の外のりは、弾性変形のない状態で貫通孔２ａの内のりと実質的に等しくしてあるので、先端部５が基板２の反対側の面に完全に露出した状態においては、弾性変形は完全に除去されて、それによる残留応力も残らない。
【００２５】
すなわち、本実施の形態における自立形端子３は、放熱器本体１の下部に固着された状態で基板２と嵌合することによって、手間をかけずに倒れ、傾き、浮きなどを抑制して放熱器本体１を基板２に自立装着することができ、先端部５が基板２の反対側の面に露出しているため、基板２の両面に半田付けができるので、半田付け後の装着強度も十分に有している。
【００２６】
（第２の実施の形態）
次に、本発明の第２の実施の形態を図面を参照して説明する。図２は本発明の第２の実施の形態における自立形端子の構成を示す全体構成図である。本実施の形態は、上述した第１の実施の形態に加えて、本発明の案内部を備えたものである。したがって、本実施の形態において、第１の実施の形態と同様の機能を果たす物については、同一符号を付与し、説明を省略する。また、特に説明のないものについては、第１の実施の形態と同じとする。
【００２７】
図２において、自立形端子８は、平板状の端子であり、放熱器本体１の下部に固着され、基板２に設けられた貫通孔２ａに貫通部４が挿入箝合されることによって、放熱器本体１を基板２上に実装状態で保持するものである。自立形端子８は、３本の突起を有しており、うち２本は並列に配置された貫通部４であり、他の１本は貫通部４より突出した案内部９である。当たり面部６は、第１の実施の形態と異なり、貫通部４と案内部９との間に形成されている。案内部９の突出長さは、当たり面部６の面を基準とした場合、貫通部４の突出長さより長くなっている。その他の構成は第１の実施の形態と同様である。
【００２８】
次に、このような本実施の形態の動作を、第１の実施の形態と異なる点を中心に説明する。
【００２９】
放熱器本体１の下部に固着された自立形端子８の案内部９の先端を基板２に開けられた貫通孔２ｂに挿入することによって、放熱器本体１の装着位置の位置決めが行われ、そのまま挿入方向に力をかけると、先端部５のテーパーにより、貫通部４は、その二又部が閉じるように弾性変形して、貫通孔２ａに挿入される。その他の動作は第１の実施の形態と同様である。
【００３０】
すなわち、本実施の形態における自立形端子８は、第１の実施の形態における自立形端子３の特徴に加え、案内部９により、確実に位置決めをした後に、貫通部４の挿入を行えるものである。第１の実施の形態において説明したように、貫通部４は、容易に弾性変形するように形成されているため、充分な強度を有していない場合が多い。したがって、貫通孔２ａに確実に位置決めして挿入してやらないと、塑性変形したり、損傷したりすることが懸念される。自立形端子８は、これを防止するために、案内部９を備えたものである。
【００３１】
（第３の実施の形態）
次に、本発明の第３の実施の形態を図面を参照して説明する。図３は本発明の第３の実施の形態における放熱器の構成を示す全体構成図である。本実施の形態は、上述した第１の実施の形態における自立形端子３を備えた放熱器に関するものであるため、第１の実施の形態において説明したものについては、説明を省略する。
【００３２】
図３において、放熱器本体１１は、アルミニュウムの押し出し品タイプで、Ｌ字型形状をしており、その下端には第１の実施の形態における自立形端子３が２個装着されている。
【００３３】
放熱器本体１１を、基板（図示せず）に自立装着させる動作については、第１の実施の形態において説明した、放熱器本体１を、基板２に自立装着させる動作と同様であるので、説明を省略する。
【００３４】
（第４の実施の形態）
次に、本発明の第４の実施の形態を図面を参照して説明する。図４は本発明の第４の実施の形態における放熱器の構成を示す全体構成図である。本実施の形態は、上述した第３の実施の形態における放熱器に加えて、案内用の別の端子を備え、各端子の配置を特定したものであるため、第３の実施の形態において説明したものについては、説明を省略する。
【００３５】
図４において、放熱器本体１１の下端には第１の実施の形態における自立形端子３および平板状の案内端子１０がそれぞれ２個装着されている。案内端子１０は、１本の突起を有し、その突出長さは、放熱器本体１１の下端を基準とした場合、自立形端子３の突出長さより長くなっている。２個の案内端子１０は、各端子３、１０で形成される四角形の対角に配置されている。
【００３６】
次に、放熱器本体１１を、基板（図示せず）に自立装着させる動作について、第３の実施の形態と異なる点を中心に説明する。
【００３７】
放熱器本体１１の下部に固着された２個の案内端子１０の先端を基板２に開けられた貫通孔２ｂに挿入することによって、放熱器本体１１の装着位置の位置決めが行われ、そのまま挿入方向に力をかけると、自立形端子３の先端部５のテーパーにより、貫通部４は、その二又部が閉じるように弾性変形して、貫通孔２ａに挿入される。その他の動作は第３の実施の形態と同様である。
【００３８】
すなわち、本実施の形態における放熱器は、第３の実施の形態における放熱器の特徴に加え、案内端子１０により、確実に位置決めをした後に、自立形端子３の貫通部４の挿入を行えるものである。第１の実施の形態において説明したように、貫通部４は、容易に弾性変形するように形成されているため、充分な強度を有していない場合が多い。したがって、貫通孔２ａに確実に位置決めして挿入してやらないと、塑性変形したり、損傷したりすることが懸念される。これを防止するために、案内端子１０を別に備えたものである。また、案内端子１０を各端子３、１０で形成される四角形の対角に配置することによって、案内端子１０の位置決め後、自立形端子３の貫通部４の挿入前に、放熱器本体１１の倒れによって生じる、自立形端子３の先端部５の変位を小さくしている。
【００３９】
（第５の実施の形態）
次に、本発明の第５の実施の形態を図面を参照して説明する。図５は本発明の第５の実施の形態における放熱器の構成を示す全体構成図である。図６は図５の放熱器本体の下端部の平面図である。本実施の形態は、上述した第２の実施の形態における自立形端子８を備えた放熱器に関するものであるため、第２の実施の形態において説明したものについては、説明を省略する。
【００４０】
図５において、放熱器本体１２は、アルミニュウムの押し出し品タイプで、櫛型形状をしており、その下端には第２の実施の形態における自立形端子８が２個装着されている。２個の自立形端子８は、図６に示すように、２個の案内部９が、２組の貫通部４および２個の案内部９で形成される四角形の対角に配置されるように、放熱器本体１２のそれぞれ反対側の面に、表裏逆に装着されている。
【００４１】
放熱器本体１２を、基板（図示せず）に自立装着させる動作については、第２の実施の形態において説明した、放熱器本体１を、基板２に自立装着させる動作と同様であるので、説明を省略する。
【００４２】
すなわち、本実施の形態における放熱器は、第４の実施の形態における放熱器に装着された自立形端子３および案内端子１０の替わりに、自立形端子８を装着して、その配置を特定することによって、第４の実施の形態における放熱器と同様の効果に加え、端子の個数減による取付工数の減少を得るものである。
【００４３】
なお、本発明の自立形端子は、上述した第１〜第５の実施の形態において、平板状であるとして説明したが、これに限るものではなく、厚み方向に形状の変化するものであっても、各断面において、本発明の貫通孔と各端子との関係が確保されておりさえすればよい。
【００４４】
また、本発明の各端子は、上述した第１〜第５の実施の形態において、放熱器本体を基板上に自立装着させるためだけのものとして説明したが、アース端子を兼ねるものとしてもよい。
【００４５】
さらに、本発明の各端子は、上述した第１〜第５の実施の形態において、単体で製造された後、放熱器本体に装着されるとして説明したが、放熱器本体と一体構造としたものであってもよい。
【００４６】
また、本発明の返り面部は、上述した第１〜第５の実施の形態において、当たり面部と実質的に平行で、当たり面部との間の距離が基板の厚みと実質的に等しいとして説明したが、これに限らず、貫通部を貫通孔から抜こうとする力が作用しても、基板の面と当接して、貫通部が貫通孔から抜かれるのを防止するものでありさえすればよい。
【００４７】
さらに、本発明の貫通部は、上述した第１〜第５の実施の形態において、２本の貫通部をあわせた外のりのうち、貫通孔に垂直な方向の外のりの最大値が、貫通部の弾性変形がない状態で、貫通孔の貫通孔に垂直な方向の内のりの最大値より大きく、かつ、先端部を除いた２本の貫通部をあわせた外のりのうち、貫通孔に垂直な方向の外のりの最大値が、貫通部の弾性変形がない状態で、貫通孔の貫通孔に垂直な方向の内のりの最大値と実質的に等しいとして説明したが、これに限るものではなく、要するに、貫通部の有する返り面部が、挿入後に基板の面と相対することによって、貫通部を貫通孔から抜こうとする力が作用しても、基板の面と当接して、貫通部が貫通孔から抜かれるのを防止する構成でありさえすればよい。
【００４８】
また、本発明の案内部および案内端子は、上述した第１〜第５の実施の形態において、貫通部の先端より突出しているとして説明したが、これに限らず、貫通部の貫通孔への挿入に先だって挿入される構成でありさえすればよい。
【００４９】
また、本発明の放熱器は、上述した第３〜第５の実施の形態において説明した形状に限らず、装着される各端子の数も、放熱器の形状、大きさ、各端子の大きさ、放熱器の自立強度に対する要求等に応じて調整するとしてもよい。
【００５０】
【発明の効果】
以上説明したところから明らかなように、本発明の放熱器及び自立形端子は、手間をかけずに、倒れ、傾き、浮きなどを抑制してプリント基板に装着でき、且つ、プリント基板に装着する際に案内端子又は案内部により放熱器の装着位置の位置決めが行われるため自立形端子の装着が容易になり、又、自立形端子により半田付け後の装着強度を十分に確保することができる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態における自立形端子の構成を示す全体構成図。
【図２】本発明の第２の実施の形態における自立形端子の構成を示す全体構成図。
【図３】本発明の第３の実施の形態における放熱器の構成を示す全体構成図。
【図４】本発明の第４の実施の形態における放熱器の構成を示す全体構成図。
【図５】本発明の第５の実施の形態における放熱器の構成を示す全体構成図。
【図６】図５の放熱器本体の下端部の平面図。
【符号の説明】
１放熱器本体
２基板
２ａ貫通孔
２ｂ貫通孔
３自立形端子
４貫通部
５先端部
６当たり面部
７返り面部
８自立形端子
９案内部
１０案内端子
１１放熱器本体
１２放熱器本体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a printed circuit board used in various electrical devices, and a free-standing terminal used when mounting a heatsink that suppresses temperature rise of various semiconductors during operation of the device on the printed circuit board, and a radiator using the same It is about.
[0002]
[Prior art]
In printed circuit boards used in various electrical equipment, the temperature rise of various semiconductors is suppressed by a heatsink, but when mounting and soldering the heatsink on the printed circuit board, the heatsink tilts, falls, It is necessary to suppress floating and solder. It is also necessary to guarantee the soldering strength after soldering.
[0003]
Conventional heatsinks are equipped with terminals for soldering strength assurance and electrical grounding functions. They are attached to the printed circuit board in advance during production, and the terminals are bent on the back side, or a heatsink using a jig, etc. Is held and soldering is performed by suppressing the falling, tilting, and floating of the radiator.
[0004]
[Problems to be solved by the invention]
As described above, in the conventional heatsink, after soldering the heatsink to the printed circuit board, it is necessary to suppress tilting, falling down, floating, etc. The condition is made over time.
[0005]
The present invention takes into account the problem of conventional radiators that takes time during production, and can be mounted on a printed circuit board without restraining falling, tilting, floating, etc. It is an object of the present invention to provide a self-supporting terminal having a sufficient mounting strength and a radiator using the same.
[0006]
[Means for Solving the Problems]
To solve the problems described above, the radiator of the present application according to claim 1 is inserted simultaneously into the through hole of the one drilled in the substrate, opposite their tip to the insertion side of the surface of the substrate The two penetration parts formed in parallel so as to be exposed on the side surface and the surface on the side where the penetration part of the substrate is inserted are contacted to determine the insertion depth of the penetration part. A self-supporting terminal having a surface portion ;
A guide terminal that guides insertion of the through portion into the through hole by being inserted into another through hole formed in the substrate prior to insertion of the through portion into the through hole ;
The distal end portion of the self-supporting terminal tapers inward as the outer surface thereof approaches the distal end, a return surface portion is formed on the side opposite to the distal end of the outer surface, and the two through portions are After being elastically deformed so as to approach each other and simultaneously inserted into the one through-hole , all or part of the elastic deformation is removed and separated, and the return surface portion is relative to the opposite surface after insertion. By doing so, even if a force to pull out the through portion from the through hole is applied, the contact with the opposite surface, preventing the through portion from being pulled out of the through hole , It is characterized in that it is attached and fixed to the substrate.
[0007]
Radiator of the present application according to claim 2, in the radiator according to claim 1, wherein the tip of the guide pin, with reference to the surface on which the contact surface is formed, to protrude from the distal end of the two through portions It is characterized by being.
[0008]
Radiator of the present application according to claim 3, in the radiator according to claim 1, wherein the freestanding terminal to another through-hole bored in the substrate, prior to insertion into the through hole of the through portion A guide portion for guiding insertion of the through portion into the through hole by being inserted;
The guide terminal functions as the guide portion.
[0009]
Square radiator of the present application according to claim 4, in the radiator according to claim 1, wherein the 2 freestanding terminal and with said guide pin respectively Kosonae, the two guide pins, each said pin is formed It is arrange | positioned at the diagonal of.
[0010]
Radiator of the present application according to claim 5, in the radiator according to claim 3, the freestanding terminals and is characterized in that it comprises a plurality.
[0011]
Radiator of the present application according to claim 6, in the radiator according to claim 5, the further comprising the plurality, and by providing two, the two guide portion, the guide portion and the through portion Are arranged at diagonal angles of a quadrangle formed by and.
[0012]
Radiator of the present application according to claim 7, in the radiator according to claim 1, wherein the free-standing terminals and / or the guide pin, is characterized in that an integral structure of a radiator body.
[0013]
Freestanding terminal of claim 8, wherein the application is simultaneously inserted into the through hole of the one drilled in the substrate, so that their tip is exposed on the surface opposite the insertion side of the surface of the substrate Two penetrations formed in parallel;
A contact surface portion that determines the insertion depth of the through portion by contacting the surface of the substrate where the through portion is inserted, and
A guide portion that guides insertion of the through portion into the through hole by being inserted into another through hole opened in the substrate prior to insertion of the through portion into the through hole;
The tip portion tapers inward as the outer surface thereof approaches the tip, and a return surface portion is formed on the opposite side of the outer surface to the tip, so that the two penetrating portions approach each other. After being elastically deformed and simultaneously inserted into the one through-hole, all or part of the elastic deformation is removed and separated, and the return surface portion is opposed to the opposite surface after insertion, Even if a force to remove the through portion from the through hole is applied, it contacts the opposite surface and prevents the through portion from being removed from the through hole, and is fixed to the substrate. It is characterized by having been made.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0021]
(First embodiment)
FIG. 1 is an overall configuration diagram showing the configuration of a self-supporting terminal according to the first embodiment of the present invention.
[0022]
In FIG. 1, a self-supporting terminal 3 is a flat terminal having a penetrating portion 4 which is a projection arranged in parallel with two, and is fixed to the lower part of the radiator body 1 and provided on the substrate 2. The radiator body 1 is held on the substrate 2 in a mounted state by inserting and fitting the through portion 4 into the through hole 2a. The penetrating portion 4 has an inverted U-shaped bifurcated shape, and is formed so as to be easily elastically deformed when a force is applied to close the bifurcated bifurcated portion. The front end portion 5 of the penetrating portion 4 has a wedge shape, and a portion corresponding to a side facing the front end of the wedge shape forms a return surface portion 7. The contact surface portion 6 is formed in parallel to the return surface portion 7 on the outer side of the penetrating portion 4, and the distance between the contact surface portion 6 and the return surface portion 7 facing each other is substantially equal to the thickness of the substrate 2. Are equal.
[0023]
Next, the operation of this embodiment will be described.
[0024]
When the tip portion 5 of the self-supporting terminal 3 fixed to the lower part of the radiator body 1 is applied to the inlet portion of the through hole 2a formed in the substrate 2 and a force is applied in the insertion direction, the tip portion 5 tapers due to the taper. The part 4 is elastically deformed so that the bifurcated part is closed, and is inserted into the through hole 2a. The insertion of the penetrating part 4 is stopped when the contact surface part 6 comes into contact with the substrate 2, and at this time, the tip part 5 is completely exposed to the opposite surface of the substrate 2, and the return surface part 7 and the contact surface part 6 The substrate 2 is sandwiched. As a result, the return surface portion 7 comes into contact with the surface on the opposite side of the substrate 2, so that even if a force for pulling out the through portion 4 from the through hole 2 a is applied, the return surface portion 7 cannot be removed. At this time, the outer portion of the portion of the through portion 4 in the through hole 2a is substantially equal to the inner portion of the through hole 2a without elastic deformation, so that the tip portion 5 is on the opposite side of the substrate 2. In a state where the surface is completely exposed, the elastic deformation is completely removed, and no residual stress is left.
[0025]
That is, the self-supporting terminal 3 according to the present embodiment is fitted to the substrate 2 in a state of being fixed to the lower portion of the radiator main body 1, so that it can be radiated by suppressing tilting, tilting, floating, and the like without trouble. Since the main body 1 can be mounted on the substrate 2 in a self-supporting manner and the tip 5 is exposed on the opposite surface of the substrate 2, soldering can be performed on both surfaces of the substrate 2, so that the mounting strength after soldering can be improved. Have enough.
[0026]
(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 2 is an overall configuration diagram showing the configuration of the self-supporting terminal according to the second embodiment of the present invention. This embodiment is provided with the guide portion of the present invention in addition to the first embodiment described above. Accordingly, in the present embodiment, the same reference numerals are given to those that perform the same functions as those in the first embodiment, and the description thereof is omitted. In addition, those not specifically described are the same as those in the first embodiment.
[0027]
In FIG. 2, a self-supporting terminal 8 is a flat terminal and is fixed to the lower portion of the radiator body 1, and the through-hole 4 is inserted into the through-hole 2 a provided in the substrate 2 to dissipate heat. The main body 1 is held on the substrate 2 in a mounted state. The self-supporting terminal 8 has three protrusions, two of which are through portions 4 arranged in parallel, and the other one is a guide portion 9 protruding from the through portion 4. Unlike the first embodiment, the contact surface portion 6 is formed between the penetrating portion 4 and the guide portion 9. The protruding length of the guide portion 9 is longer than the protruding length of the penetrating portion 4 when the surface of the contact surface portion 6 is used as a reference. Other configurations are the same as those of the first embodiment.
[0028]
Next, the operation of the present embodiment will be described focusing on differences from the first embodiment.
[0029]
By inserting the tip of the guide portion 9 of the self-supporting terminal 8 fixed to the lower part of the radiator body 1 into the through hole 2b opened in the substrate 2, the mounting position of the radiator body 1 is determined. When a force is applied in the insertion direction, the penetrating portion 4 is elastically deformed so that the bifurcated portion is closed by the taper of the tip portion 5, and is inserted into the through hole 2a. Other operations are the same as those in the first embodiment.
[0030]
That is, the self-supporting terminal 8 in the present embodiment can insert the penetrating portion 4 after the positioning by the guide portion 9 in addition to the features of the self-supporting terminal 3 in the first embodiment. is there. As described in the first embodiment, the penetrating portion 4 is formed so as to be easily elastically deformed, and therefore often does not have sufficient strength. Accordingly, there is a concern that plastic deformation or damage may occur unless the positioning and insertion into the through-hole 2a are ensured. In order to prevent this, the self-standing terminal 8 is provided with a guide portion 9.
[0031]
(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 3 is an overall configuration diagram showing the configuration of the radiator in the third embodiment of the present invention. Since the present embodiment relates to a radiator having the self-standing terminal 3 in the first embodiment described above, description of what has been described in the first embodiment will be omitted.
[0032]
In FIG. 3, the radiator main body 11 is an aluminum extruded product type and has an L-shape, and two free-standing terminals 3 in the first embodiment are attached to the lower end thereof.
[0033]
The operation of mounting the radiator main body 11 on the substrate (not shown) is the same as the operation of mounting the radiator main body 1 on the substrate 2 described in the first embodiment. Is omitted.
[0034]
(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 4 is an overall configuration diagram showing the configuration of the radiator in the fourth embodiment of the present invention. In this embodiment, in addition to the radiator in the third embodiment described above, another terminal for guidance is provided, and the arrangement of each terminal is specified. Therefore, this embodiment will be described in the third embodiment. A description of those that have been made will be omitted.
[0035]
In FIG. 4, two free-standing terminals 3 and two flat guide terminals 10 in the first embodiment are mounted on the lower end of the radiator body 11. The guide terminal 10 has one protrusion, and the protrusion length is longer than the protrusion length of the self-supporting terminal 3 when the lower end of the radiator body 11 is used as a reference. The two guide terminals 10 are arranged on the diagonal of the quadrangle formed by the terminals 3 and 10.
[0036]
Next, an operation of mounting the radiator main body 11 on a substrate (not shown) by itself will be described focusing on differences from the third embodiment.
[0037]
By inserting the tips of the two guide terminals 10 fixed to the lower part of the radiator body 11 into the through-hole 2b formed in the substrate 2, the mounting position of the radiator body 11 is positioned, and the insertion direction is maintained as it is. When the force is applied, the penetrating portion 4 is elastically deformed so that the bifurcated portion is closed by the taper of the tip portion 5 of the self-supporting terminal 3, and is inserted into the through hole 2a. Other operations are the same as those in the third embodiment.
[0038]
That is, the radiator in the present embodiment can insert the penetrating portion 4 of the self-supporting terminal 3 after the positioning by the guide terminal 10 in addition to the features of the radiator in the third embodiment. It is. As described in the first embodiment, the penetrating portion 4 is formed so as to be easily elastically deformed, and therefore often does not have sufficient strength. Accordingly, there is a concern that plastic deformation or damage may occur unless the positioning and insertion into the through-hole 2a are ensured. In order to prevent this, the guide terminal 10 is provided separately. Further, by arranging the guide terminal 10 at the diagonal of the quadrangle formed by the terminals 3, 10, the positioning of the guide terminal 10 and the insertion of the penetrating part 4 of the self-supporting terminal 3 before the radiator body 11 is positioned. The displacement of the distal end portion 5 of the self-supporting terminal 3 caused by the falling is reduced.
[0039]
(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to the drawings. FIG. 5 is an overall configuration diagram showing a configuration of a radiator in the fifth embodiment of the present invention. 6 is a plan view of the lower end portion of the radiator body of FIG. Since this embodiment relates to a radiator having the self-supporting terminal 8 in the second embodiment described above, description of what has been described in the second embodiment will be omitted.
[0040]
In FIG. 5, the radiator body 12 is an aluminum extruded product type and has a comb shape, and two free-standing terminals 8 according to the second embodiment are attached to the lower end thereof. As shown in FIG. 6, the two free-standing terminals 8 are arranged such that the two guide portions 9 are arranged at diagonal corners of a quadrangle formed by the two sets of penetrating portions 4 and the two guide portions 9. Further, the heat sink main body 12 is mounted on the opposite side surface in the opposite direction.
[0041]
The operation of mounting the radiator main body 12 on the substrate (not shown) is the same as the operation of mounting the radiator main body 1 on the substrate 2 described in the second embodiment. Is omitted.
[0042]
That is, the radiator in the present embodiment is provided with the self-supporting terminal 8 instead of the self-supporting terminal 3 and the guide terminal 10 mounted on the heat radiator in the fourth embodiment, and the arrangement thereof is specified. Thus, in addition to the same effect as the radiator in the fourth embodiment, a reduction in the number of mounting steps due to the reduction in the number of terminals is obtained.
[0043]
In addition, although the self-supporting terminal of the present invention has been described as having a flat plate shape in the first to fifth embodiments described above, it is not limited to this, and the shape changes in the thickness direction. However, it is only necessary to ensure the relationship between the through hole of the present invention and each terminal in each cross section.
[0044]
Moreover, although each terminal of the present invention has been described as being only for mounting the radiator main body on the substrate in the first to fifth embodiments described above, it may also serve as a ground terminal.
[0045]
Furthermore, although each terminal of the present invention has been described as being mounted on the radiator body after being manufactured as a single unit in the first to fifth embodiments described above, it has an integrated structure with the radiator body. It may be.
[0046]
In the first to fifth embodiments described above, the return surface portion of the present invention is substantially parallel to the contact surface portion, and the distance between the contact surface portion is substantially equal to the thickness of the substrate. However, the present invention is not limited to this, as long as it is in contact with the surface of the substrate and prevents the through portion from being pulled out of the through hole even if a force is applied to remove the through portion from the through hole. Good.
[0047]
Furthermore, in the first to fifth embodiments described above, the penetrating portion of the present invention has a maximum value of the outer portion in the direction perpendicular to the through hole among the outer portions of the two penetrating portions combined. In the state where there is no elastic deformation of the part, the vertical value of the through hole is larger than the maximum value of the inner hole in the direction perpendicular to the through hole, and out of the outer glue of the two through parts excluding the tip part. It has been described that the maximum value of the outer glue in one direction is substantially equal to the maximum value of the inner glue in the direction perpendicular to the through hole of the through hole without elastic deformation of the through part. In short, the return surface portion of the penetrating portion is opposed to the surface of the substrate after insertion, so that even if a force acts to remove the penetrating portion from the through hole, the penetrating portion comes into contact with the surface of the substrate. What is necessary is just to be the structure which prevents that it pulls out from a through-hole.
[0048]
Moreover, although the guide part and guide terminal of this invention demonstrated as protruding from the front-end | tip of a penetration part in the 1st-5th embodiment mentioned above, not only this but to the through-hole of a penetration part It only needs to be configured to be inserted prior to insertion.
[0049]
The radiator of the present invention is not limited to the shape described in the third to fifth embodiments described above, and the number of terminals to be mounted is also the shape and size of the radiator and the size of each terminal. It may be adjusted according to the requirements for the self-supporting strength of the radiator.
[0050]
【The invention's effect】
As is clear from the above description, the radiator and the self-supporting terminal of the present invention can be mounted on the printed circuit board without being troubled, and can be mounted on the printed circuit board while being prevented from falling, tilting, and floating. At this time, since the mounting position of the radiator is determined by the guide terminal or the guide portion, the mounting of the self-supporting terminal is facilitated, and the mounting strength after soldering can be sufficiently secured by the self-supporting terminal .
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram showing a configuration of a self-supporting terminal according to a first embodiment of the present invention.
FIG. 2 is an overall configuration diagram showing a configuration of a self-supporting terminal according to a second embodiment of the present invention.
FIG. 3 is an overall configuration diagram showing a configuration of a radiator according to a third embodiment of the present invention.
FIG. 4 is an overall configuration diagram showing a configuration of a radiator in a fourth embodiment of the present invention.
FIG. 5 is an overall configuration diagram showing a configuration of a radiator according to a fifth embodiment of the present invention.
6 is a plan view of a lower end portion of the radiator main body of FIG. 5;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Radiator body 2 Board | substrate 2a Through-hole 2b Through-hole 3 Self-supporting terminal 4 Through part 5 Tip part 6 Contact surface part 7 Return surface part 8 Self-standing terminal 9 Guide part 10 Guide terminal 11 Radiator body 12 Radiator body

Claims

Two through-holes formed in parallel so as to be simultaneously inserted into one through-hole formed in the substrate and their tip portions exposed on the surface opposite to the insertion-side surface of the substrate; A self-supporting terminal having a contact surface portion that determines an insertion depth of the through portion by contacting the surface of the substrate where the through portion is inserted ;
A guide terminal that guides insertion of the through portion into the through hole by being inserted into another through hole opened in the substrate prior to insertion of the through portion into the through hole ;
The distal end portion of the self-supporting terminal tapers inward as the outer surface thereof approaches the distal end, a return surface portion is formed on the side opposite to the distal end of the outer surface, and the two through portions are After being elastically deformed so as to approach each other and simultaneously inserted into the one through-hole , all or part of the elastic deformation is removed and separated, and the return surface portion is relative to the opposite surface after insertion. By doing so, even if a force to pull out the through portion from the through hole is applied, the contact with the opposite surface, preventing the through portion from being pulled out of the through hole , A heat radiator characterized by being mounted and fixed to a substrate .

The tip of the guide pin, with reference to the surface on which the contact surface is formed, the radiator according to claim 1, wherein a protruding from the distal end of the two through-section.

The self-standing terminal is inserted into another through-hole formed in the substrate prior to insertion of the through-portion into the through-hole, thereby guiding insertion of the through-portion into the through-hole. With a guide ,
The radiator according to claim 1 , wherein the guide terminal functions as the guide portion .

2. The radiator according to claim 1 , wherein each of the two self-supporting terminals and the guide terminals is provided, and the two guide terminals are arranged at a diagonal of a quadrangle formed by the terminals. .

The heat radiator according to claim 3 , comprising a plurality of the self-standing terminals.

The thing is provided a plurality, and by providing two, said two guide portions, claims, characterized in that said penetrating portion and the guide portion are arranged diagonally of the rectangle forming 5. A radiator according to 5 .

The radiator according to claim 1, wherein the self-standing terminal and / or the guide terminal and the radiator main body are integrated.

Two through-holes formed in parallel so as to be simultaneously inserted into one through-hole formed in the substrate and their tip portions exposed on the surface opposite to the insertion-side surface of the substrate; ,
A contact surface portion that determines the insertion depth of the through portion by contacting the surface of the substrate where the through portion is inserted, and
A guide portion that guides insertion of the through portion into the through hole by being inserted into another through hole opened in the substrate prior to insertion of the through portion into the through hole;
The tip portion tapers inward as the outer surface thereof approaches the tip, and a return surface portion is formed on the opposite side of the outer surface to the tip, so that the two penetrating portions approach each other. After being elastically deformed and simultaneously inserted into the one through-hole, all or part of the elastic deformation is removed and separated, and the return surface portion is opposed to the opposite surface after insertion, Even if a force to remove the through portion from the through hole is applied, it contacts the opposite surface and prevents the through portion from being removed from the through hole, and is fixed to the substrate. A self-supporting terminal characterized by being made to be .