JPH0644147Y2 - Radiator for electronic parts - Google Patents
Radiator for electronic partsInfo
- Publication number
- JPH0644147Y2 JPH0644147Y2 JP1987094556U JP9455687U JPH0644147Y2 JP H0644147 Y2 JPH0644147 Y2 JP H0644147Y2 JP 1987094556 U JP1987094556 U JP 1987094556U JP 9455687 U JP9455687 U JP 9455687U JP H0644147 Y2 JPH0644147 Y2 JP H0644147Y2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- hole
- screw hole
- insulating sheet
- radiator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 230000005855 radiation Effects 0.000 description 9
- 238000009413 insulation Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
Landscapes
- Mounting Components In General For Electric Apparatus (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、トランジスタ等の電子部品がネジ止めされる
放熱体に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a heat radiator to which electronic components such as transistors are screwed.
（従来の技術） 第２図（ａ），（ｂ）にはこの種従来の放熱体及び電子
部品の取付構造を示してある。(Prior Art) FIGS. 2 (a) and 2 (b) show a conventional heat radiator and electronic component mounting structure of this kind.
同図において、21はパッケージ一側に取付孔22を有する
トランジスタ、23は取付孔22に嵌合可能な小径部24を有
する筒状の絶縁ブッシュ、25は平坦部26に螺子穴27を有
する放熱フィン、28は螺子穴27に対応して孔29を有し平
坦部26に接着された絶縁シート、30は螺子穴27に締着可
能なネジ、31は平ワッシャ、32はスプリングワッシャで
ある。In the figure, 21 is a transistor having a mounting hole 22 on one side of the package, 23 is a cylindrical insulating bush having a small diameter portion 24 that can be fitted in the mounting hole 22, and 25 is a heat dissipation having a flat portion 26 with a screw hole 27. The fin 28 is an insulating sheet having a hole 29 corresponding to the screw hole 27 and bonded to the flat portion 26, 30 is a screw that can be fastened to the screw hole 27, 31 is a flat washer, and 32 is a spring washer.
トランジスタ21は、ネジ30に平ワッシャ31とスプリング
ワッシャ32と絶縁ブッシュ23を順に嵌め、これをトラン
ジスタ21の取付孔２に差し込み、絶縁シート28の孔29を
通じて放熱フィン25の螺子穴27に締着することで取付け
られている。In the transistor 21, the flat washer 31, the spring washer 32, and the insulating bush 23 are sequentially fitted to the screw 30, inserted into the mounting hole 2 of the transistor 21, and fastened to the screw hole 27 of the heat radiation fin 25 through the hole 29 of the insulating sheet 28. It is installed by doing.
（考案が解決しようとする課題） ところで、上記従来の放熱フィン25では、絶縁シート28
を放熱フィン25に取付ける際の穴同士の位置合わせや、
ネジ30の螺子穴27への挿入が容易に行えるように、絶縁
シート28の孔29の穴径を螺子穴27よりも大径に形成して
いる。(Problems to be solved by the invention) By the way, in the conventional radiation fin 25, the insulating sheet 28
Positioning of holes when attaching to the radiation fin 25,
The hole 29 of the insulating sheet 28 is formed to have a diameter larger than that of the screw hole 27 so that the screw 30 can be easily inserted into the screw hole 27.
このため、ネジ30を螺子穴27に挿入する際にネジ30に傾
斜等の軸ずれを生じ易く、またこれが原因となってねじ
込み時に金属屑が発生し、該金属屑がトランジスタ21と
絶縁シート28或いは絶縁ブッシュ23との間に侵入して絶
縁不良を発生する欠点がある。Therefore, when the screw 30 is inserted into the screw hole 27, the screw 30 is likely to be misaligned, such as tilted, and this causes metal scraps when screwed in. The metal scraps cause the transistor 21 and the insulating sheet 28 to move. Alternatively, there is a drawback that it penetrates into the insulating bush 23 to cause insulation failure.
本考案は上記事情に鑑みてなされたもので、その目的と
するところは、ネジ挿入時の軸ずれと絶縁不良を防止で
きる電子部品用放熱体を提供することにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat radiator for an electronic component that can prevent misalignment and insulation failure during screw insertion.
（課題を解決するための手段） 上記目的を達成するため、本考案では、トランジスタ等
の電子部品がネジ止めされる螺子穴を有する電子部品用
放熱体において、螺子穴の上端部に上方に向け徐々に大
径となる許容部が設けると共に、螺子穴に対応し該螺子
穴よりも小径の孔を有する絶縁シートを放熱体に取付け
ている。(Means for Solving the Problem) In order to achieve the above object, in the present invention, in a heat radiator for an electronic component having a screw hole into which an electronic component such as a transistor is screwed, an upper part of the screw hole is directed upward. An insulating sheet having a gradually increasing diameter and having a hole corresponding to the screw hole and having a diameter smaller than the screw hole is attached to the radiator.
（作用） 本考案では、絶縁シートの孔の穴径が放熱体の螺子穴よ
りも小さく形成され、しかも螺子穴の上端部に許容部が
設けられているので、ネジを螺子穴に挿入する際には、
絶縁シートの孔周辺部分をネジ下端で押圧して許容部の
内面形状に沿って略ロート状に変形させ、この変形によ
りネジを螺子穴の中心に案内できる。(Operation) In the present invention, since the hole diameter of the insulating sheet is formed smaller than the screw hole of the radiator, and the allowance portion is provided at the upper end portion of the screw hole, when inserting the screw into the screw hole, Has
The periphery of the hole of the insulating sheet is pressed by the lower end of the screw to be deformed into a substantially funnel shape along the inner surface shape of the allowance portion, and the screw can be guided to the center of the screw hole by this deformation.
また、ネジをねじ込む際に絶縁シートの孔を無理なく拡
径してネジに密着できるので、ねじ込み時に金属屑が発
生しても該金属屑の上方移動を確実に抑制できる。In addition, when the screw is screwed in, the hole of the insulating sheet can be reasonably expanded in diameter and brought into close contact with the screw. Therefore, even if metal chips are generated during screwing, upward movement of the metal chips can be reliably suppressed.
（実施例） 第１図（ａ）乃至第１図（ｃ）は本考案の一実施例を示
すもので、第１図（ａ）はトランジスタの取付状態を示
す斜視図、第１図（ｂ）はネジ締着部分の拡大断面図、
第１図（ｃ）は第１図（ｂ）の分解図である。(Embodiment) FIGS. 1 (a) to 1 (c) show an embodiment of the present invention. FIG. 1 (a) is a perspective view showing a mounting state of a transistor, and FIG. ) Is an enlarged cross-sectional view of the screw fastening part,
FIG. 1 (c) is an exploded view of FIG. 1 (b).
同図において、１は例えばTO-220型のトランジスタで、
パッケージ一側部に取付孔２を有している。In the figure, 1 is a TO-220 type transistor,
A mounting hole 2 is provided on one side of the package.
３は筒状の絶縁ブッシュで、上記取付孔２に嵌合でき、
且つ取付孔２と長手寸法を同じくする小径部４を有して
いる。3 is a cylindrical insulating bush, which can be fitted into the mounting hole 2,
Moreover, it has a small diameter portion 4 having the same longitudinal dimension as the mounting hole 2.
５は放熱フィンで、銅またはアルミニウムから成り、平
坦部６に螺子穴７を有している。この螺子穴７の上端部
には、上方に向け徐々に大径となり、且つ内面が曲面で
構成される許容部13が設けられている。A heat radiation fin 5 is made of copper or aluminum and has a screw hole 7 in the flat portion 6. At the upper end of the screw hole 7, there is provided a permitting portion 13 having a gradually increasing diameter and an inner surface having a curved surface.
８は絶縁シートで、上記螺子穴７に対応する孔９を有
し、上記平坦部６に接着剤等で取付けられている。この
孔９の穴径は放熱フィン５の螺子穴７よりも小さい。An insulating sheet 8 has a hole 9 corresponding to the screw hole 7 and is attached to the flat portion 6 with an adhesive or the like. The hole diameter of this hole 9 is smaller than that of the screw hole 7 of the heat radiation fin 5.
10は上記螺子穴７に締着可能なネジ、11は平ワッシャ、
12はスプリングワッシャである。10 is a screw that can be fastened to the screw hole 7, 11 is a flat washer,
12 is a spring washer.
放熱フィン５に対するトランジスタ１の取付けは、ネジ
10に平ワッシャ11とスプリングワッシャ12と絶縁ブッシ
ュ３を順に嵌め、これをトランジスタ１の取付孔２に差
し込み、絶縁シート８の孔９を通じて放熱フィン５の螺
子穴７に締着することで行われる。Use a screw to attach the transistor 1 to the radiation fin 5.
A flat washer 11, a spring washer 12, and an insulating bush 3 are fitted in this order to 10, and the insulating washer 3 is inserted into the mounting hole 2 of the transistor 1 and is fastened to the screw hole 7 of the heat radiation fin 5 through the hole 9 of the insulating sheet 8. .
絶縁シート８の孔９の穴径が放熱フィン５の螺子穴７よ
りも小さく形成され、しかも螺子穴７の上端部に許容部
13が設けられているので、ネジ10を螺子穴７に挿入する
際には、絶縁シート８の孔９周辺部分をネジ10下端で押
圧して許容部13の内面形状に沿って略ロート状に変形さ
せ、この変形によりネジ10を螺子穴７の中心に案内する
ことができ、これによりネジ10の軸ずれを原因とした金
属屑の発生を防止することができる。The hole diameter of the hole 9 of the insulating sheet 8 is formed smaller than the screw hole 7 of the heat radiation fin 5, and the upper end portion of the screw hole 7 has an allowance portion.
Since the screw 13 is provided, when the screw 10 is inserted into the screw hole 7, the peripheral portion of the hole 9 of the insulating sheet 8 is pressed by the lower end of the screw 10 to form a substantially funnel shape along the inner surface shape of the allowance portion 13. The screw 10 can be deformed, and the screw 10 can be guided to the center of the screw hole 7 by this deformation, so that the generation of metal scraps due to the misalignment of the screw 10 can be prevented.
また、ネジ10をねじ込む際に絶縁シート８の孔９を無理
なく拡径してネジ10に密着できるので、ねじ込み時に金
属屑が発生しても該金属屑の上方移動を確実に抑制する
ことができ、これにより金属屑がトランジスタ１と絶縁
シート８或いは絶縁ブッシュ３との間に侵入することを
阻止して該金属屑を原因とした絶縁不良を防止すること
ができる。Further, when the screw 10 is screwed in, the hole 9 of the insulating sheet 8 can be reasonably expanded in diameter and brought into close contact with the screw 10. Therefore, even if metal scrap is generated during screwing, upward movement of the metal scrap can be reliably suppressed. As a result, it is possible to prevent metal scraps from entering between the transistor 1 and the insulating sheet 8 or the insulating bush 3 and prevent insulation failure due to the metal scraps.
尚、上記許容部13は、例えば第３図に示すように内面が
傾斜面で構成される許容部13aやこれ以外の面形状で構
成されるもので代用してもよく、要はネジ10を螺子穴７
に挿入する際に孔９の周辺部分の変形を受容できるもの
であれば同様の作用，効果を期待できる。The allowance portion 13 may be replaced by, for example, an allowance portion 13a whose inner surface is an inclined surface as shown in FIG. 3 or a surface shape other than the allowance portion 13a. Screw hole 7
The same action and effect can be expected as long as the deformation of the peripheral portion of the hole 9 can be received when it is inserted into.
（考案の効果） 以上詳述したように、本考案によれば、ネジを螺子穴に
挿入する際には、絶縁シートの孔周辺部分をネジ下端で
押圧して許容部の内面形状に沿って略ロート状に変形さ
せ、この変形によりネジを螺子穴の中心に案内すること
ができ、これによりネジの軸ずれを原因とした金属屑の
発生を防止することができる。(Effect of the Invention) As described in detail above, according to the present invention, when the screw is inserted into the screw hole, the peripheral portion of the hole of the insulating sheet is pressed by the lower end of the screw so as to follow the inner surface shape of the allowance portion. It can be deformed into a substantially funnel shape, and by this deformation, the screw can be guided to the center of the screw hole, and thus it is possible to prevent the generation of metal scrap caused by the misalignment of the screw axis.
また、ネジをねじ込む際に絶縁シートの孔を無理なく拡
径してネジに密着できるので、ねじ込み時に金属屑が発
生しても該金属屑の上方移動を確実に抑制することがで
き、これにより金属屑がトランジスタと絶縁シートとの
間に侵入することを阻止して該金属屑を原因とした絶縁
不良を防止することができる。Further, when the screw is screwed in, the hole of the insulating sheet can be reasonably expanded in diameter so that the screw can be brought into close contact with the screw. Therefore, even if metal scrap is generated during screwing, upward movement of the metal scrap can be reliably suppressed. It is possible to prevent metal scrap from entering between the transistor and the insulating sheet, and prevent insulation failure due to the metal scrap.
第１図（ａ）乃至第１図（ｃ）は本考案の一実施例を示
すもので、第１図（ａ）はトランジスタの取付状態を示
す斜視図、第１図（ｂ）はネジ締着部分の拡大断面図、
第１図（ｃ）は第１図（ｂ）の分解図である。 第２図（ａ），（ｂ）は従来例を示すもので、第２図
（ａ）はトランジスタの取付状態を示す斜視図、第２図
（ｂ）はネジ締着部分の拡大断面図である。 第３図は本考案の他の実施例を示す放熱フィンの要部拡
大断面図である。 図中、１……トランジスタ、２……取付孔、５……放熱
フィン、７……螺子穴、８……絶縁シート、９……孔、
10……ネジ、13,13a……許容部。1 (a) to 1 (c) show an embodiment of the present invention. FIG. 1 (a) is a perspective view showing a mounting state of a transistor, and FIG. 1 (b) is a screw tightening. Enlarged sectional view of the wearing part,
FIG. 1 (c) is an exploded view of FIG. 1 (b). 2 (a) and 2 (b) show a conventional example, FIG. 2 (a) is a perspective view showing a mounting state of a transistor, and FIG. 2 (b) is an enlarged sectional view of a screw fastening portion. is there. FIG. 3 is an enlarged cross-sectional view of a main part of a radiation fin showing another embodiment of the present invention. In the figure, 1 ... Transistor, 2 ... Mounting hole, 5 ... Radiating fin, 7 ... Screw hole, 8 ... Insulating sheet, 9 ... Hole,
10 ... screw, 13,13a ... allowable part.
Claims (1)
電子部品用放熱体において、 前記螺子穴の上端部に上方に向けて徐々に大径となる許
容部を設けると共に、 前記螺子穴よりも小径の孔を有する絶縁シートを、前記
螺子穴と前記孔とを合わせて放熱体に取り付け、 前記電子部品を取付けるネジを前記螺子穴に螺合した際
に、前記孔の外周がネジに密着すると共に、前記孔の外
周近傍が前記許容部の内面形状に沿って密着することを
特徴とする電子部品用放熱体。1. A heat radiator for an electronic component having a screw hole to which an electronic component is screwed, wherein an upper end portion of the screw hole is provided with an allowance portion that gradually increases in diameter toward the upper side. Also, an insulating sheet having a small diameter hole is attached to the radiator by aligning the screw hole and the hole, and when the screw for mounting the electronic component is screwed into the screw hole, the outer periphery of the hole adheres to the screw. In addition, the heat radiator for electronic parts is characterized in that the vicinity of the outer periphery of the hole adheres along the shape of the inner surface of the allowance portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987094556U JPH0644147Y2 (en) | 1987-06-22 | 1987-06-22 | Radiator for electronic parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987094556U JPH0644147Y2 (en) | 1987-06-22 | 1987-06-22 | Radiator for electronic parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS64385U JPS64385U (en) | 1989-01-05 |
| JPH0644147Y2 true JPH0644147Y2 (en) | 1994-11-14 |
Family
ID=30958140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987094556U Expired - Lifetime JPH0644147Y2 (en) | 1987-06-22 | 1987-06-22 | Radiator for electronic parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0644147Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665215B1 (en) | 2005-06-29 | 2007-01-09 | 삼성전기주식회사 | Fastening structure of electric parts and radiator |
| JP6003458B2 (en) * | 2012-09-24 | 2016-10-05 | 株式会社アンセイ | Buffer member and vehicle locking device |
| WO2018221296A1 (en) * | 2017-05-30 | 2018-12-06 | 三菱電機株式会社 | Power conversion device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629959U (en) * | 1979-08-13 | 1981-03-23 | ||
| JPS5769243U (en) * | 1980-10-13 | 1982-04-26 | ||
| JPS58109288U (en) * | 1982-01-18 | 1983-07-25 | 東芝テック株式会社 | Electronic component mounting device |
| JPS58180638U (en) * | 1982-05-25 | 1983-12-02 | 松下電工株式会社 | Heat sink mounting structure for semiconductor devices |
-
1987
- 1987-06-22 JP JP1987094556U patent/JPH0644147Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS64385U (en) | 1989-01-05 |
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