JP4025664B2

JP4025664B2 - Mounting structure of reinforcing plate on flexible circuit board

Info

Publication number: JP4025664B2
Application number: JP2003059559A
Authority: JP
Inventors: 大輔八木
Original assignee: Nippon Mektron KK
Current assignee: Nippon Mektron KK
Priority date: 2003-03-06
Filing date: 2003-03-06
Publication date: 2007-12-26
Anticipated expiration: 2023-03-06
Also published as: JP2004273599A

Description

【０００１】
【発明の属する技術分野】
本発明は、金属補強板材料を有する可撓性回路基板の実装用捨て基板と共に出荷する形態であって、金属補強板材料から金属補強板領域を簡便に分離できるようにした可撓性回路基板に於ける補強板の取り付け構造に関する。
【０００２】
【従来の技術とその問題点】
この種の可撓性回路基板に於ける補強板の取り付け構造としては、特開２００２−１６３２５公報のように、金属補強板材料に離脱しないように連結部を介して区画形成した金属補強板の領域に可撓性回路基板の所定箇所を貼付け、その金属補強板と連結部との境界部の両面部位には形成位置が相互に僅かに異なる溝状の分離用スリットを設けたものがある。
【０００３】
しかしこのような構造では、製品側のみに分離部分を設けているので、その連結部位が必ず捨て基板部分に残り、製品のすぐ近傍に破断面が残ることになる。また、この連結部は捨て基板部分と共に実装用ラインに乗せる為、製品とあわせて実装工程を流れることになる。
【０００４】
従って、回路基板の形成後、クリーム半田印刷、部品搭載、リフロ−及び洗浄などの回路基板を実際に使用する為に必要な多くの工程を通過する。このため、工程中で連結部が破断して製品に亀裂、打痕や傷を与える場合があり、また、製品搬出時に連結部が引っかかって工程の一時停止を起こす場合や、連結部の切り離し作業中に金属の鋭利な破断面に触れて負傷する危険性もある。
【０００５】
そこで、本発明は上記不都合を解消できる可撓性回路基板に於ける補強板の取り付け構造を提供するものである。
【０００６】
【課題を解決するための手段】
その為に本発明に係る可撓性回路基板に於ける補強板の取り付け構造では、金属補強板材料に離脱しないように連結部を介して区画形成した金属補強板の領域に可撓性回路基板の所定箇所を貼付け、前記金属補強板と前記連結部との境界部及び前記連結部と捨て基板部との境界部のそれぞれの両面部位には形成位置が相互に僅かに異なる溝状の分離用スリットを設けるように構成したものである。
【０００７】
さらに、前記連結部の中央部には、前記連結部を押圧する治具が篏合する形状の切り欠き部を設けるように構成したものである。また、前記溝状の分離用スリットはエッチング手段で同時に形成することができる。
【０００８】
【発明の実施の形態】
以下、図示の実施例を参照しながら本発明を更に説明する。図１は本発明による可撓性回路基板に於ける補強板の取り付け構造の要部平面構成図であって、１は可撓性回路基板を含む製品部を示し、２はこの製品部１を連結部３を介して一体に支持する為の捨て基板部である。
【０００９】
可撓性回路基板はその所定箇所が、金属補強板材料に離脱しないように連結部３を介して区画形成した金属補強板の領域に貼付けられており、連結部３も金属補強板材料により一体に形成されている。
【００１０】
そして、製品部１に於ける金属補強板と連結部３との境界部及び連結部３と捨て基板部２との境界部のそれぞれの両面部位には形成位置が相互に僅かに異なる溝状の分離用スリット４を両面同時のエッチング手段で設けるように構成してある。
【００１１】
このように連結部３の両端に溝状の分離用スリット４を設けることによって、連結部３の分離は容易となり、また、他の部分に可撓性回路基板のみで接続部分を設けることにより実装工程前に破断部分を取り除くことができるので、既述した従来の不具合を好適に防止できる。
【００１２】
しかし、上記のように分離用スリット４を連結部３の両端に設けただけでは、この連結部３の特性上、一方の分離用スリット４の部分で破断すると他方の分離用スリット４の部分が容易に変形して連結部３が離脱しない場合がある。
【００１３】
そこで、連結部３の中央部などに穴状の切り欠き部５を形成し、この切り欠き部５に篏合する先端形状の治具を押し当てると、上記のような不具合を生ずることなく確実に連結部３の分離を行なえる。
【００１４】
このような切り欠き部は、図２に示すように連結部３の中央部両側に矩形状の切り欠き部６に形成してもよく、また、図３のようにＶ字状の切り欠き部７に形成してもよく、いずれにしても連結部３を押す治具の先端形状がその切り欠き部に篏合して分離用スリット４に均等に押圧力がかかる形状であればその他の任意の形状を採用できる。
【００１５】
【発明の効果】
本発明に係る可撓性回路基板に於ける補強板の取り付け構造によれば、補強板として金属補強板材料を使用しても製品部と捨て基板部との連結部を容易確実に分離できる。
【００１６】
従って、製品の傷、亀裂、打痕の防止など品質の向上を図れるほか、プレス工程やバリ取り作業の削除など工程の省略ができ、また、金属板打ち抜きの為の型も不要であるなどの工具の簡易化も図れる。
【図面の簡単な説明】
【図１】本発明の一実施例による可撓性回路基板に於ける補強板の取り付け構造の要部平面構成図。
【図２】本発明の他の実施例による同様な要部平面構成図。
【図３】本発明の更に他の実施例による同様な要部平面構成図。
【符号の説明】
１製品部
２捨て基板部
３連結部
４分離用スリット
５切り欠き部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flexible circuit board that is shipped together with a discarding board for mounting a flexible circuit board having a metal reinforcing plate material, and in which the metal reinforcing plate region can be easily separated from the metal reinforcing plate material. The present invention relates to a mounting structure of a reinforcing plate.
[0002]
[Prior art and its problems]
As a mounting structure of the reinforcing plate in this type of flexible circuit board, as disclosed in JP-A-2002-16325, a metal reinforcing plate that is partitioned through a connecting portion so as not to be separated from the metal reinforcing plate material. In some cases, a predetermined portion of the flexible circuit board is attached to the region, and groove-shaped separation slits having slightly different formation positions are provided on both surface portions of the boundary portion between the metal reinforcing plate and the connecting portion.
[0003]
However, in such a structure, since the separation portion is provided only on the product side, the connecting portion is always discarded and remains on the substrate portion, and a fracture surface remains in the immediate vicinity of the product. In addition, since this connecting portion is placed on the mounting line together with the discarded substrate portion, it flows through the mounting process together with the product.
[0004]
Therefore, after forming the circuit board, it passes through many processes necessary for actually using the circuit board such as cream solder printing, component mounting, reflow, and washing. For this reason, the connecting part may break during the process, resulting in cracks, dents and scratches on the product, and when the product is unloaded, the connecting part may be caught and the process may be temporarily stopped. There is also a risk of injury by touching the sharp fracture surface of the metal inside.
[0005]
In view of the above, the present invention provides a mounting structure for a reinforcing plate in a flexible circuit board that can eliminate the above disadvantages.
[0006]
[Means for Solving the Problems]
For this purpose, in the mounting structure of the reinforcing plate in the flexible circuit board according to the present invention, the flexible circuit board is formed in the region of the metal reinforcing plate that is partitioned through the connecting portion so as not to be separated from the metal reinforcing plate material. For the separation of the groove shape, the formation positions are slightly different from each other on the both sides of the boundary portion between the metal reinforcing plate and the connecting portion and the boundary portion between the connecting portion and the discarding substrate portion. A slit is provided.
[0007]
Furthermore, the center part of the said connection part is comprised so that the notch part of the shape which the jig | tool which presses the said connection part may engage | combine is provided. The groove-shaped separation slits can be simultaneously formed by etching means.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be further described below with reference to the illustrated embodiments. FIG. 1 is a plan view of a principal part of a mounting structure of a reinforcing plate in a flexible circuit board according to the present invention. 1 is a product part including the flexible circuit board, and 2 is a product part 1. This is a discarded substrate portion for integrally supporting via the connecting portion 3.
[0009]
A predetermined portion of the flexible circuit board is affixed to the region of the metal reinforcing plate formed through the connecting portion 3 so as not to be separated from the metal reinforcing plate material, and the connecting portion 3 is also integrated with the metal reinforcing plate material. Is formed.
[0010]
Further, in the product portion 1, groove portions in which the formation positions are slightly different from each other on both sides of the boundary portion between the metal reinforcing plate and the connecting portion 3 and the boundary portion between the connecting portion 3 and the discarding substrate portion 2. The separation slit 4 is configured to be provided by etching means on both sides simultaneously.
[0011]
Thus, by providing the groove-shaped separation slits 4 at both ends of the connecting portion 3, the connecting portion 3 can be easily separated, and mounting is achieved by providing a connecting portion only on the flexible circuit board in other portions. Since the broken part can be removed before the process, the above-described conventional problems can be suitably prevented.
[0012]
However, if the separation slits 4 are only provided at both ends of the connecting portion 3 as described above, if one of the separation slits 4 is broken due to the characteristics of the connecting portion 3, the other separation slit 4 portion is It may be easily deformed and the connecting part 3 may not be detached.
[0013]
Therefore, if a hole-like notch 5 is formed in the center of the connecting portion 3 and the like, and a tip-shaped jig that engages with the notch 5 is pressed, the above-mentioned problem does not occur. In addition, the connecting portion 3 can be separated.
[0014]
Such a notch may be formed in a rectangular notch 6 on both sides of the central part of the connecting part 3 as shown in FIG. 2, and a V-shaped notch as shown in FIG. In any case, any other shape can be used as long as the shape of the tip of the jig that presses the connecting portion 3 is engaged with the notch and the separation slit 4 is uniformly pressed. The shape can be adopted.
[0015]
【The invention's effect】
According to the mounting structure of the reinforcing plate in the flexible circuit board according to the present invention, the connecting portion between the product portion and the discarded substrate portion can be easily and reliably separated even if a metal reinforcing plate material is used as the reinforcing plate.
[0016]
Therefore, it is possible to improve the quality by preventing scratches, cracks, and dents on the product, omitting the pressing process and removing the deburring operation, and eliminating the need for a mold for punching the metal plate. Tools can be simplified.
[Brief description of the drawings]
FIG. 1 is a plan view of a principal part of a reinforcing plate mounting structure in a flexible circuit board according to an embodiment of the present invention.
FIG. 2 is a plan view of a similar main part according to another embodiment of the present invention.
FIG. 3 is a plan view of a similar main part according to still another embodiment of the present invention.
[Explanation of symbols]
1 Product part 2 Discard substrate part 3 Connection part 4 Separation slit 5 Notch part

Claims

A predetermined portion of the flexible circuit board is attached to the region of the metal reinforcing plate that is partitioned through the connecting portion so as not to be separated from the metal reinforcing plate material, and the boundary portion between the metal reinforcing plate and the connecting portion and the connecting portion The separation part is formed in a groove-like separation slit slightly different from each other in the both-side portions of the boundary part between the substrate part and the discarded substrate part, and the connection part is pressed at the central part of the connection part. 1. A reinforcing plate mounting structure in a flexible circuit board, wherein a notch portion having a shape mating with a jig to be mounted is provided .