JPH03211784A - Printed board - Google Patents
Printed boardInfo
- Publication number
- JPH03211784A JPH03211784A JP618490A JP618490A JPH03211784A JP H03211784 A JPH03211784 A JP H03211784A JP 618490 A JP618490 A JP 618490A JP 618490 A JP618490 A JP 618490A JP H03211784 A JPH03211784 A JP H03211784A
- Authority
- JP
- Japan
- Prior art keywords
- square hole
- printed circuit
- circuit board
- apex
- cracks
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
Landscapes
- Structure Of Printed Boards (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、角穴を有するプリント基板に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a printed circuit board having a square hole.
従来、プリント基板には、そこに搭載する部品の都合上
、角穴が設けられることがあるが、かかる角穴を設けた
ことによる亀裂を防ぐための処置は施されていなかった
。Conventionally, printed circuit boards are sometimes provided with square holes for the convenience of components mounted thereon, but no measures have been taken to prevent cracks caused by the provision of such square holes.
そのため亀裂を回避したい場合には、角穴を設けたい場
合でも、丸形穴で代用しているのが現状である。ただし
亀裂の被害を極力少なくする為に角穴の頂点部を円弧状
にすることは行われていた。Therefore, when it is desired to avoid cracks, a round hole is currently used instead, even when a square hole is desired. However, in order to minimize the damage caused by cracks, the apex of the square hole was shaped into an arc.
この状況を第２図に示す。This situation is shown in Figure 2.
第２図において、１はプリント基板、３は角穴、４は円
弧５５は直角、６は亀裂、である。In FIG. 2, 1 is a printed circuit board, 3 is a square hole, 4 is a circular arc 55 at a right angle, and 6 is a crack.
つまりプリント基板１に角穴３を設けると、その角部に
亀裂６が生じ易いので１円弧４の如き形状を採用してい
たわけである。In other words, if a square hole 3 is provided in the printed circuit board 1, cracks 6 are likely to occur at the corners, so a shape such as a one-circular arc 4 is adopted.
しかし、上述の部分的な円弧４の如き形状では。 However, in a shape such as the partial arc 4 mentioned above.
亀裂６の発生を完全に無くすには不十分で、プリント基
板の製造工程において亀裂６が発生することがあり、こ
れがその後の輸送時におけるショック等で発展して事故
に結びつくことがあった。It is not sufficient to completely eliminate the occurrence of cracks 6, and cracks 6 may occur during the manufacturing process of printed circuit boards, which may develop due to shock during subsequent transportation, leading to accidents.
本発明の目的は、かかる従来技術における問題点を解決
し、角穴であっても、その頂点部において亀裂が発生す
ることのないようにした、かかる角穴を設けたプリント
基板を提供することにある。It is an object of the present invention to solve the problems in the prior art and to provide a printed circuit board with square holes, which prevents cracks from occurring at the apex of the square holes. It is in.
上記目的達成のため１本発明では、角穴を設けたプリン
ト基板において、該角穴の頂点部に、該頂点またはその
近傍にその中心を定めた円弧状〈丸みを形成した。In order to achieve the above object, one aspect of the present invention is that in a printed circuit board having a square hole, an arc-shaped (rounded) shape is formed at the apex of the square hole, the center of which is set at or near the apex.
プリント基板に設けた角穴において、応力集１に最も生
じる部分は角の頂点部である。そこで、その頂点部また
はその近傍にその中心を定めた［弧状の丸みを形成して
応力集中が生じないよう１したので、亀裂が完全に発生
しなくなった。In a square hole provided in a printed circuit board, the part where stress concentration 1 occurs most is at the apex of the corner. Therefore, the center was set at or near the apex to form an arcuate roundness to prevent stress concentration, so that cracks were completely prevented from occurring.
第１図（ａ）は本発明の一実施例を示す平面［第１図（
ｂ）はその側面図、である。FIG. 1(a) is a plan view showing an embodiment of the present invention [FIG. 1(a)]
b) is its side view.
これらの図において、プリント基板１に丸みイき角穴２
が設けられていることが認められるで２ろう。In these figures, there is a rounded square hole 2 in the printed circuit board 1.
It is recognized that this is provided.
その角の丸みは、角穴の頂点部に、該頂点まノはその近
傍にその中心を定めた円弧状により形１された丸みであ
ることは勿論である。It goes without saying that the roundness of the corner is formed by an arc whose center is located near the apex of the square hole.
かかる丸み付き角穴２を有するプリント基板１同時プレ
スにより容易に製造することができる。The printed circuit board 1 having such a rounded square hole 2 can be easily manufactured by simultaneous pressing.
本発明によれば、丸穴で代用せざるをえなかったプリン
ト基板を、角穴の特徴を生かして、ＩＩ造することがで
きるので、幅広い活用ができることになる。According to the present invention, a printed circuit board that had to be replaced with a round hole can now be manufactured in two dimensions by taking advantage of the characteristics of a square hole, so it can be used in a wide range of applications.
例えば発熱部品にタッチしないよう線材をスタイル取り
する為に設けたクランプ材が、丸穴だと回転してしまい
用をなさない。ところが角穴だと方向性があるので、そ
の用に供することができる。For example, if a clamp material is provided to style the wire so that it does not touch heat-generating parts, but it has a round hole, it will rotate and become useless. However, since a square hole has directionality, it can be used for that purpose.
以上のように、安心して角穴を使えるという効果がある
。As mentioned above, it has the effect of allowing you to use square holes with peace of mind.
第１図は本発明の一実施例で、（、）は平面図。
（ｂ）は側面図を示す。
第２図は従来方法による平面図である。
ｌ・・・プリント基板、 ２・・・丸みっき角穴、
３・・・角穴、 ４・・・円弧、５・・・
直角、 ６・・・亀裂。FIG. 1 shows one embodiment of the present invention, and (,) is a plan view. (b) shows a side view. FIG. 2 is a plan view of the conventional method. l...Printed circuit board, 2...Round square hole,
3...Square hole, 4...Circular arc, 5...
Right angle, 6...crack.
Claims (1)
部に、該頂点またはその近傍にその中心を定めた円弧状
の丸みを形成したことを特徴とするプリント基板。1. 1. A printed circuit board provided with a square hole, characterized in that the apex of the square hole is formed with an arc-shaped roundness whose center is set at or near the apex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP618490A JPH03211784A (en) | 1990-01-17 | 1990-01-17 | Printed board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP618490A JPH03211784A (en) | 1990-01-17 | 1990-01-17 | Printed board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03211784A true JPH03211784A (en) | 1991-09-17 |
Family
ID=11631467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP618490A Pending JPH03211784A (en) | 1990-01-17 | 1990-01-17 | Printed board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03211784A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04326789A (en) * | 1991-04-26 | 1992-11-16 | Matsushita Electric Ind Co Ltd | Printed board |
| JPH0595212A (en) * | 1991-10-01 | 1993-04-16 | Mitsubishi Electric Corp | High frequency semiconductor hybrid integrated circuit device |
| KR100494463B1 (en) * | 2001-07-26 | 2005-06-13 | 삼성전기주식회사 | Manufacturing method of mounting board for high performance semiconductor |
| JP2009194284A (en) * | 2008-02-18 | 2009-08-27 | Eito Kogyo:Kk | Heat-dissipating printed circuit board |
| JP2015008837A (en) * | 2013-06-27 | 2015-01-19 | 三菱電機株式会社 | Substrate unit and rice cooker |
-
1990
- 1990-01-17 JP JP618490A patent/JPH03211784A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04326789A (en) * | 1991-04-26 | 1992-11-16 | Matsushita Electric Ind Co Ltd | Printed board |
| JPH0595212A (en) * | 1991-10-01 | 1993-04-16 | Mitsubishi Electric Corp | High frequency semiconductor hybrid integrated circuit device |
| KR100494463B1 (en) * | 2001-07-26 | 2005-06-13 | 삼성전기주식회사 | Manufacturing method of mounting board for high performance semiconductor |
| JP2009194284A (en) * | 2008-02-18 | 2009-08-27 | Eito Kogyo:Kk | Heat-dissipating printed circuit board |
| JP2015008837A (en) * | 2013-06-27 | 2015-01-19 | 三菱電機株式会社 | Substrate unit and rice cooker |
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