JP2013197040A - Flat wiring material, and mounting body using the same - Google Patents

Flat wiring material, and mounting body using the same Download PDF

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JP2013197040A
JP2013197040A JP2012065885A JP2012065885A JP2013197040A JP 2013197040 A JP2013197040 A JP 2013197040A JP 2012065885 A JP2012065885 A JP 2012065885A JP 2012065885 A JP2012065885 A JP 2012065885A JP 2013197040 A JP2013197040 A JP 2013197040A
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conductors
solder
hole
engaging member
exposed
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Akihiro Yaguchi
昭弘 矢口
Takumi Kobayashi
拓実 小林
Kenichi Murakami
賢一 村上
Takumi Sato
佐藤  巧
Hiroaki Komatsu
広明 小松
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Hitachi Cable Ltd
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Hitachi Cable Ltd
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  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
  • Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
  • Combinations Of Printed Boards (AREA)
  • Insulated Conductors (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a flat wiring material that can realize solder connection at high stability and reliability by high alignment accuracy of an exposure section of a conductor and an electrode section of a mounted substrate, even when the exposure section of the conductor of the flat wiring material of an MFJ, a flexible printed circuit board and the like such as a flexible flat cable is directly connected by solder to the electrode section of the mounted substrate on which solder is precoated, and a mounting body using the same.SOLUTION: A flexible flat cable 1 comprises: plural conductors 2 for signals parallely arranged at intervals in a width direction; an insulative coating member 3 coating each conductor 2 for signals; engagement members 4 provided at adjacent positions at both ends at which the conductors 2 for signals on the coating member 3 are exposed, and engaged by inserting insertion sections 43 formed at ends in through holes formed on the mounted substrate; and positioning members 6 parallely arranged on the conductors 2 for signals, and positioning the conductors 2 for signals by inserting the insertion sections 61 formed at tips in holes formed on the mounted substrate.

Description

本発明は、フレキシブルフラットケーブルをはじめとするMFJ(Multi Frame Joiner)、フレキシブルプリント配線板などのフラット配線材、及びそれを用いた実装体に関する。   The present invention relates to an MFJ (Multi Frame Joiner) including a flexible flat cable, a flat wiring material such as a flexible printed wiring board, and a mounting body using the same.

車載用インバータユニットやエンジンコントロールユニットなどに実装される複数のプリント配線板間の電気的接続用配線部品には、従来、ワイヤハーネスが用いられている。また、このワイヤハーネスとプリント配線板との電気的接続には、コネクタ部品を用いた接続構造が採用されている。近年、上述した車載機器の小型・軽量化及び低コスト化を実現する一方策として、ワイヤハーネスに代わる配線部品の使用、及び接続工程の簡略化が求められている。   Conventionally, wire harnesses are used for wiring components for electrical connection between a plurality of printed wiring boards mounted on an in-vehicle inverter unit, an engine control unit, or the like. In addition, a connection structure using connector parts is employed for electrical connection between the wire harness and the printed wiring board. In recent years, the use of wiring components in place of wire harnesses and the simplification of connection processes have been demanded as one measure for realizing the above-described in-vehicle devices that are smaller, lighter, and lower in cost.

一方で、車載機器には、以前から長期間の使用に耐える高い信頼性も要求されている。車載機器に実装される配線部品やその接続部も、長期間の振動負荷や熱負荷に対する信頼性確保が不可欠となっている。   On the other hand, in-vehicle devices are also required to have high reliability that can withstand long-term use. It is indispensable to ensure reliability for a long-term vibration load and heat load for wiring components mounted on in-vehicle devices and their connection portions.

機器内部に実装される複数のプリント配線板間を接続する配線部品では、車載機器に作用する振動負荷に応じて配線部品に共振振動が発生することがある。この共振振動によって、配線部品の接続部に比較的大きな繰返しの機械的負荷が作用することがある。この機械的負荷によって、配線部品の接続部の電気的接続が損なわれたり、配線部品を構成する導体部やその接続部が破壊したりする可能性がある。このような理由から、車載機器用の配線部品では、特に振動などによって作用する機械的負荷に対する信頼性確保が重要となっている。   In a wiring component that connects a plurality of printed wiring boards mounted inside a device, resonance vibration may occur in the wiring component in accordance with a vibration load that acts on the in-vehicle device. Due to this resonance vibration, a relatively large mechanical load may act on the connection part of the wiring component. Due to this mechanical load, there is a possibility that the electrical connection of the connection part of the wiring component is impaired, or the conductor part constituting the wiring part and its connection part are destroyed. For these reasons, in wiring components for in-vehicle devices, it is particularly important to ensure reliability with respect to mechanical loads that act due to vibration or the like.

上述した車載機器の小型・軽量化や低コスト化に対応するため、車載機器内の配線部品に、幅方向に並列に配置された複数の導体(主に無酸素銅、タフピッチ銅等の銅で構成)を、導体厚さ方向の両面から被覆用の絶縁フィルムを接着剤で接着して被覆して一体化されたフレキシブルフラットケーブル(Flexible Flat Cable)と呼称される配線部品を採用する基板間接続構造が、実用化されている。このフレキシブルフラットケーブルでは、導体長手方向の両端部に絶縁フィルムから導体が露出した導体露出部が形成されており、この導体露出部においてプリント配線板との電気的接続が行われる。   In order to cope with the above-mentioned reduction in size, weight and cost of in-vehicle devices, a plurality of conductors (mainly copper such as oxygen-free copper and tough pitch copper) arranged in parallel in the width direction on the wiring components in the in-vehicle devices. The board-to-board connection adopts a wiring component called a flexible flat cable that is integrated by covering the insulation film for coating with adhesives from both sides in the conductor thickness direction. The structure has been put into practical use. In this flexible flat cable, conductor exposed portions where the conductor is exposed from the insulating film are formed at both ends in the conductor longitudinal direction, and electrical connection with the printed wiring board is performed at the conductor exposed portions.

なお、車載機器内の配線部品として用いられるフレキシブルフラットケーブルをはじめとするフラット配線材には、フレキシブルフラットケーブルと類似した構造のMFJ(Multi Frame Joiner)や、フレキシブルプリント配線板(Flexible Print Circuit:FPC)なども採用されている。これらは、フラット配線材の製造方法や構成材料に違いはあるが、いずれも複数の導体を幅方向に並列に配置してフラット配線材とした構造となっている。以下、フレキシブルフラットケーブルをフラット配線材の代表例として説明する。   For flat wiring materials such as flexible flat cables used as wiring components in in-vehicle devices, MFJ (Multi Frame Joiner) with a structure similar to flexible flat cables and flexible printed circuit boards (Flexible Print Circuit: FPC) ) Etc. are also adopted. Although there are differences in the manufacturing method and constituent materials of the flat wiring material, these have a structure in which a plurality of conductors are arranged in parallel in the width direction to form a flat wiring material. Hereinafter, a flexible flat cable will be described as a representative example of a flat wiring material.

フレキシブルフラットケーブルとプリント配線板との電気的接続に、圧接型コネクタが用いられる場合がある。フレキシブルフラットケーブルの端末部の導体露出部をコネクタの開口部に挿入し、フレキシブルフラットケーブルの導体露出部とコネクタの電極とを圧接することによって電気的導通をとっている。コネクタによる接続では、フレキシブルフラットケーブルをコネクタの開口部に挿入することで、フレキシブルフラットケーブルの機械的な固定も成されている。   A pressure contact type connector may be used for electrical connection between the flexible flat cable and the printed wiring board. The conductor exposed portion of the terminal portion of the flexible flat cable is inserted into the opening of the connector, and the conductor exposed portion of the flexible flat cable and the electrode of the connector are brought into pressure contact for electrical conduction. In connection by a connector, the flexible flat cable is mechanically fixed by inserting the flexible flat cable into the opening of the connector.

コネクタを介したフレキシブルフラットケーブルの接続は、フレキシブルフラットケーブルの挿抜が容易であるという利点がある。しかしながら、小型化・軽量化が要求されている車載機器では、プリント配線板上にコネクタを設置するスペースが設計上取れない場合がある。   The connection of the flexible flat cable via the connector has an advantage that the flexible flat cable can be easily inserted and removed. However, in an in-vehicle device that is required to be reduced in size and weight, a space for installing a connector on a printed wiring board may not be designed.

また、圧接型コネクタの接続では、振動負荷によってフレキシブルフラットケーブルの導体露出部とコネクタの電極との接触が一時的に途切れる瞬断と呼ばれる接続不良が発生する場合があり、接続信頼性上の点で問題がある。   In addition, in connection with a pressure contact type connector, a connection failure called a momentary disconnection in which contact between the exposed conductor of the flexible flat cable and the electrode of the connector is temporarily interrupted by a vibration load may occur. There is a problem.

フレキシブルフラットケーブルの導体露出部とプリント配線板に設けられた電極部との電気的接続には、コネクタを介することなく、はんだ材や導電性接着剤などの接合材で直接接続する構造が採用されることがある。はんだ材などによる導体露出部の直接接続は、接続部領域の縮小による小型化への対応と接続部品の部品点数を削減することができる。さらに、プリント配線板に実装される配線部品以外の電子部品とのはんだ接続と一括接続することによる実装工程削減や工程簡略化といった効果を得ることができる。また、はんだ材や導電性金属粒子を充填した樹脂などの接合材を用いた接合は、通常金属間化合物を形成する金属接合となるため、圧接型コネクタのような電気的接点の瞬断が発生することはなく、電気的に安定した接合が得られる。   For the electrical connection between the conductor exposed part of the flexible flat cable and the electrode part provided on the printed wiring board, a structure that directly connects with a bonding material such as solder material or conductive adhesive is adopted without using a connector. Sometimes. Direct connection of the exposed conductor portion with a solder material or the like can cope with downsizing by reducing the connection portion area and reduce the number of parts of the connection component. Furthermore, it is possible to obtain effects such as a reduction in the mounting process and a simplification of the process by solder connection and batch connection with electronic components other than the wiring components mounted on the printed wiring board. In addition, bonding using a bonding material such as a resin filled with solder material or conductive metal particles is usually a metal bonding that forms an intermetallic compound, so electrical contacts such as pressure contact type connectors may be momentarily interrupted. There is no need to do so, and an electrically stable junction can be obtained.

上述した車載機器の小型化に対応するため、配線部品自体も小型化して高密度に実装することが求められており、フレキシブルフラットケーブルにおいてもプリント配線板の電極部と接続する導体露出部の間隔(ピッチ)の微細化が図られている。導体露出部の間隔が微細になると、導体露出部とこれに対応するプリント配線板の電極部との接続時の位置合わせをより正確に行うことが求められる。位置合わせ精度が不十分である場合、電極部から導体の幅方向にずれて接続された導体露出部が隣接する他の電極部にもはんだ材によって接続されてしまい、電気的不良(短絡)が発生する場合がある。この理由から、フレキシブルフラットケーブルの導体露出部をプリント配線板の電極部にはんだ材で直接接続する場合には、導体露出部と対応するプリント配線板の電極部との正確な位置合わせの手段を講じることが必要となっている。   In order to cope with the downsizing of the above-mentioned in-vehicle devices, the wiring components themselves are also required to be miniaturized and mounted with high density, and in the flexible flat cable, the distance between the exposed conductors connected to the electrode part of the printed wiring board (Pitch) is miniaturized. When the interval between the conductor exposed portions becomes fine, it is required to more accurately perform alignment at the time of connection between the conductor exposed portion and the corresponding electrode portion of the printed wiring board. When the alignment accuracy is insufficient, the exposed conductor connected to the conductor in the width direction of the conductor is connected to the other adjacent electrode by the solder material, and an electrical failure (short circuit) is caused. May occur. For this reason, when the conductor exposed part of the flexible flat cable is directly connected to the electrode part of the printed wiring board with a solder material, means for accurate alignment between the conductor exposed part and the corresponding printed wiring board electrode part is required. It is necessary to take.

このような位置合わせの方法として、例えば、基板に貼り付けた両面テープとフレキシブルフラットケーブルに設けた印とを合致させる方法(例えば、特許文献1参照。)、基板に設けたランドにフレキシブルフラットケーブルの側端を当接する方法(例えば、特許文献2参照。)、リジッドプリント配線板に形成した孔に、フレキシブルプリント配線板に形成した延出部を嵌合させる方法(例えば、特許文献3参照。)などが知られている。   As a method of such alignment, for example, a method of matching a double-sided tape affixed to a substrate and a mark provided on a flexible flat cable (see, for example, Patent Document 1), a flexible flat cable on a land provided on a substrate A method of abutting the side ends of the flexible printed wiring board (see, for example, Patent Document 2), and a method of fitting an extension formed in the flexible printed wiring board into a hole formed in the rigid printed wiring board (see, for example, Patent Document 3). ) Etc. are known.

この特許文献3に記載された位置合わせ方法は、絶縁材料製のフィルム、このフィルム上に形成された複数の配線パターン、配線パターンの端部が露出するように複数の配線パターンを覆う被覆、及び絶縁材料製のフィルムの一部を突出して形成された2つの延出部を備えたフレキシブルプリント配線板と、フレキシブルプリント配線板の配線パターンの端面に接続される配線パターン、及び2つの延出部が挿入される2つの孔を備えたリジッドプリント配線板とを用い、リジッドプリント配線板の孔にフレキシブルプリント配線板の延出部を弾性変形させて挿入することで、フレキシブルプリント配線板の配線パターンとリジッドプリント配線板の配線パターンとの位置合わせを行うというものである。また、延出部の幅は孔の内径とほぼ同等であることから、延出部が孔に丁度嵌合するとされている。   The alignment method described in Patent Document 3 includes a film made of an insulating material, a plurality of wiring patterns formed on the film, a coating that covers the plurality of wiring patterns so that ends of the wiring patterns are exposed, and A flexible printed wiring board having two extending portions formed by projecting a part of a film made of an insulating material, a wiring pattern connected to an end face of the wiring pattern of the flexible printed wiring board, and two extending portions The wiring pattern of the flexible printed wiring board is obtained by elastically deforming and inserting the extended portion of the flexible printed wiring board into the hole of the rigid printed wiring board using the rigid printed wiring board having two holes into which the cable is inserted. Is aligned with the wiring pattern of the rigid printed wiring board. Further, since the width of the extending portion is substantially equal to the inner diameter of the hole, the extending portion is just fitted into the hole.

特開2008−270304号公報JP 2008-270304 A 特開2007−201008号公報JP 2007-201008 A 特開2000−165035号公報JP 2000-165035 A

しかし、特許文献1に記載された位置合わせの方法では、基板表面の両面テープとフレキシブルフラットケーブルの印を合致させる際の精度が不十分である場合や、貼付作業ミスによりフレキシブルフラットケーブルの導体露出部と基板の電極部との間に位置にずれが生じる可能性がある。また、リフロー炉内の高温環境に晒されることにより両面テープの粘着力が低下する場合がある。   However, in the positioning method described in Patent Document 1, when the double-sided tape on the surface of the substrate and the mark of the flexible flat cable are inadequate, or when the conductor of the flexible flat cable is exposed due to a mistake in affixing operation There is a possibility that a position shift occurs between the electrode portion and the electrode portion of the substrate. Moreover, the adhesive force of a double-sided tape may fall by being exposed to the high temperature environment in a reflow furnace.

特許文献2に記載された位置合わせの方法では、ハンドリング時の取り扱いやリフロー炉内における熱風や振動によって基板に対してフレキシブルフラットケーブルの位置がずれてしまい、配線パターンの露出部同士の接続の信頼性が損なわれる可能性がある。   In the alignment method described in Patent Document 2, the position of the flexible flat cable is displaced with respect to the substrate due to handling during handling and hot air or vibration in the reflow furnace, and the reliability of the connection between the exposed portions of the wiring pattern May be impaired.

特許文献3に記載された位置合わせ方法では、延出部が弾性変形して孔に挿入されるため、挿入量に応じてフレキシブルフラットケーブルの長手方向(すなわち導体の長手方向)の位置がばらつき、フレキシブルフラットケーブルの導体露出部とリジッドプリント配線板の電極部との間の位置合わせが十分でない場合がある。   In the alignment method described in Patent Document 3, since the extending portion is elastically deformed and inserted into the hole, the position of the flexible flat cable in the longitudinal direction (that is, the longitudinal direction of the conductor) varies depending on the amount of insertion, In some cases, the alignment between the conductor exposed portion of the flexible flat cable and the electrode portion of the rigid printed wiring board is not sufficient.

したがって、本発明の目的は、はんだがプリコートされた被実装基板の電極部にフレキシブルフラットケーブルをはじめとするMFJ、フレキシブルプリント配線板などのフラット配線材の導体の露出部をはんだで直接接続する場合でも、導体の露出部と被実装基板の電極部との高い位置合わせ精度により、安定かつ高信頼性のはんだ接続が可能なフラット配線材及びそれを用いた実装体を提供することにある。   Accordingly, an object of the present invention is to directly connect an exposed portion of a conductor of a flat wiring material such as an MFJ, a flexible printed wiring board, etc., including a flexible flat cable, to the electrode portion of the mounting substrate on which the solder is precoated. However, an object of the present invention is to provide a flat wiring material capable of stable and highly reliable solder connection with a high alignment accuracy between the exposed portion of the conductor and the electrode portion of the mounted substrate, and a mounting body using the same.

本発明の一態様は、上記目的を達成するため、以下のフラット配線材及びそれを用いた実装体を提供する。   In order to achieve the above object, one aspect of the present invention provides the following flat wiring material and a mounting body using the same.

[1]間隔を設けて幅方向に並列に配置された複数の導体と、前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材と、前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、前記係合部材を前記被覆部材に固定する固定部材と、前記複数の導体に並列に配置され、先端部に形成された挿入部が前記被実装基板に形成された穴に挿入されて前記複数の導体を位置決めする位置決め部材とを備えたフラット配線材。
[2]前記係合部材は、前記導体の長手方向と直交する方向が前記係合部材の長手方向となるように配置された前記[1]に記載のフラット配線材。
[3]前記係合部材及び前記位置決め部材は、金属板から形成され、前記係合部材及び前記位置決め部材は、それぞれの前記挿入部の幅方向が、互いに交差する方向となるように形成された前記[1]又は[2]に記載のフラット配線材。
[4]間隔を設けて幅方向に並列に配置された複数の導体と、前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材と、前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、前記係合部材を前記被覆部材に固定する固定部材とを備え、前記係合部材の前記挿入部は、前記幅方向に対して所定角度傾斜しているフラット配線材。
[5]前記係合部材の前記挿入部は、前記貫通孔に挿入される際に弾性変形可能とする開口部と、前記貫通孔に挿入された後、挿入方向と反対方向への抜けを防止する突起部とを有する前記[1]乃至[4]のいずれかに記載のフラット配線材。
[1] A plurality of conductors arranged in parallel in the width direction with an interval, an insulating covering member that collectively covers the plurality of conductors so that both ends thereof are exposed, and the covering member An insertion portion formed at an end extending in the width direction is inserted into a through-hole formed in the mounted substrate. An engaging member, a fixing member that fixes the engaging member to the covering member, and a hole that is arranged in parallel with the plurality of conductors and that has an insertion portion formed at a tip portion formed in the mounting substrate. And a positioning member for positioning the plurality of conductors inserted into the flat wiring member.
[2] The flat wiring member according to [1], wherein the engaging member is disposed such that a direction orthogonal to a longitudinal direction of the conductor is a longitudinal direction of the engaging member.
[3] The engaging member and the positioning member are formed of a metal plate, and the engaging member and the positioning member are formed such that the width directions of the respective insertion portions intersect each other. The flat wiring material according to [1] or [2].
[4] A plurality of conductors arranged in parallel in the width direction at intervals, an insulating covering member that collectively covers the plurality of conductors so that both ends of the conductors are exposed, and on the covering member An insertion portion formed at an end extending in the width direction is inserted into a through-hole formed in the mounted substrate. A flat wiring member that includes an engaging member that engages and a fixing member that fixes the engaging member to the covering member, and the insertion portion of the engaging member is inclined at a predetermined angle with respect to the width direction.
[5] The insertion portion of the engagement member is an opening that is elastically deformable when inserted into the through hole, and prevents the insertion member from slipping in the direction opposite to the insertion direction after being inserted into the through hole. The flat wiring material according to any one of [1] to [4], wherein the flat wiring member has a protruding portion.

[6]間隔を設けて幅方向に並列に配置された複数の導体と、前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材と、前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、前記係合部材を前記被覆部材に固定する固定部材と、前記複数の導体に並列に配置され、先端部に形成された挿入部が前記被実装基板に形成された穴に挿入されて前記複数の導体を位置決めする位置決め部材とを備えたフラット配線材と、前記フラット配線材の前記係合部材の前記挿入部が挿入される前記貫通孔と、前記位置決め部材の前記挿入部が挿入される前記穴と、前記複数の導体とはんだ接続される電極部とを有する被実装基板と、を備えた実装体。
[7]前記被実装基板は、前記フラット配線材が実装される側の面に、前記複数の導体とはんだ接続される第1の電極部、及び前記係合部材とはんだ接続される第2の電極部を備え、前記フラット配線材の前記複数の導体は、前記被実装基板の前記第1の電極部にはんだ接続される第1の接続部を備え、前記係合部材は、前記被実装基板の前記第2の電極部にはんだ接続される第2の接続部を備え、前記係合部材の前記挿入部、及び前記位置決め部材の前記挿入部は、前記第1及び第2の電極部と前記第1及び第2の接続部とをそれぞれはんだ接続する際、前記フラット配線材の挿入方向への変位を許容する形状を有する前記[6]に記載の実装体。
[8]前記フラット配線材の前記係合部材は、前記被覆部材上の前記複数の導体が露出する前記両端部のそれぞれに近接した位置に設けられた一対の係合部材であり、前記フラット配線材の前記位置決め部材の前記挿入部は、前記両先端部のそれぞれに形成された一対の挿入部であり、前記被実装基板は、前記フラット配線材の前記複数の導体が露出する前記両端部のそれぞれにはんだ接続され、前記一対の係合部材の前記挿入部がそれぞれ前記貫通孔に挿入され、前記位置決め部材の前記一対の挿入部がそれぞれ前記穴に挿入される第1及び第2の被実装基板である前記[6]又は[7]に記載の実装体。
[9]間隔を設けて幅方向に並列に配置された複数の導体と、前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材と、前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、前記係合部材を前記被覆部材に固定する固定部材とを備え、前記係合部材の前記挿入部は、前記幅方向に対して所定角度傾斜しているフラット配線材と、前記フラット配線材の前記係合部材の前記挿入部が挿入される前記貫通孔と、前記複数の導体とはんだ接続される電極部とを有する被実装基板と、を備えた実装体。
[6] A plurality of conductors arranged in parallel in the width direction at intervals, an insulating covering member that collectively covers the plurality of conductors so that both ends thereof are exposed, and the covering member An insertion portion formed at an end extending in the width direction is inserted into a through-hole formed in the mounted substrate. An engaging member, a fixing member that fixes the engaging member to the covering member, and a hole that is arranged in parallel with the plurality of conductors and that has an insertion portion formed at a tip portion formed in the mounting substrate. A flat wiring member provided with a positioning member for positioning the plurality of conductors inserted into the through hole, the through hole into which the insertion portion of the engaging member of the flat wiring member is inserted, and the insertion of the positioning member Said hole into which the part is inserted Mounting body and a target mounting substrate having a plurality of conductors and solder connected thereto electrode portion.
[7] The mounted substrate has a first electrode portion solder-connected to the plurality of conductors and a second solder-connected to the engaging member on a surface on which the flat wiring member is mounted. An electrode portion; and the plurality of conductors of the flat wiring member include a first connection portion that is solder-connected to the first electrode portion of the mounted substrate, and the engagement member includes the mounted substrate A second connection portion solder-connected to the second electrode portion, and the insertion portion of the engaging member and the insertion portion of the positioning member are connected to the first and second electrode portions, The mounting body according to [6], wherein the mounting body has a shape that allows displacement in the insertion direction of the flat wiring member when the first and second connection portions are connected by soldering.
[8] The engagement member of the flat wiring member is a pair of engagement members provided at positions close to the both ends where the plurality of conductors on the covering member are exposed, and the flat wiring The insertion portion of the positioning member of the material is a pair of insertion portions formed at each of the two end portions, and the mounted substrate is provided at both end portions where the plurality of conductors of the flat wiring material are exposed. First and second mounted parts that are solder-connected to each other, the insertion portions of the pair of engaging members are inserted into the through holes, respectively, and the pair of insertion portions of the positioning member are inserted into the holes, respectively. The mounting body according to [6] or [7], which is a substrate.
[9] A plurality of conductors arranged in parallel in the width direction at intervals, an insulating covering member that collectively covers the plurality of conductors so that both ends thereof are exposed, and the covering member An insertion portion formed at an end extending in the width direction is inserted into a through-hole formed in the mounted substrate. A flat wiring member that includes an engaging member that engages and a fixing member that fixes the engaging member to the covering member, wherein the insertion portion of the engaging member is inclined at a predetermined angle with respect to the width direction; A mounting body comprising: the mounting hole having the through hole into which the insertion portion of the engaging member of the flat wiring member is inserted; and an electrode portion to be soldered to the plurality of conductors.

本発明によれば、はんだがプリコートされた被実装基板の電極部にフレキシブルフラットケーブルをはじめとするMFJ、フレキシブルプリント配線板などのフラット配線材の導体の露出部をはんだで直接接続する場合でも、導体の露出部と被実装基板の電極部との高い位置合わせ精度により、安定かつ高信頼性のはんだ接続が可能となる。   According to the present invention, even when an exposed portion of a conductor of a flat wiring material such as a MFJ including a flexible flat cable and a flexible printed wiring board is directly connected to an electrode portion of a substrate to be mounted pre-coated with solder, The high alignment accuracy between the exposed portion of the conductor and the electrode portion of the mounted substrate enables stable and highly reliable solder connection.

図1は、本発明の実施の形態に係るフレキシブルフラットケーブルの外観を示し、(a)は平面図、(b)は正面図である。1A and 1B show the appearance of a flexible flat cable according to an embodiment of the present invention, where FIG. 1A is a plan view and FIG. 1B is a front view. 図2は、図1(a)に示すフレキシブルフラットケーブルの係合部材を展開した状態を示す平面図である。FIG. 2 is a plan view showing a state where the engaging member of the flexible flat cable shown in FIG. 図3は、信号用導体、係合部材及び位置決め部材の露出部を示す図である。FIG. 3 is a diagram illustrating exposed portions of the signal conductor, the engaging member, and the positioning member. 図4は、フレキシブルフラットケーブルの層構成を示す、図1(a)のA−A線断面図である。FIG. 4 is a cross-sectional view taken along the line AA of FIG. 1A showing the layer configuration of the flexible flat cable. 図5は、係合部材の形状を示すために部分的に被覆部材を取り除いた係合部材の平面図である。FIG. 5 is a plan view of the engaging member with the covering member partially removed to show the shape of the engaging member. 図6は、フレキシブルフラットケーブルの端末部をプリント配線板に実装した状態を示す要部平面図である。FIG. 6 is a main part plan view showing a state in which a terminal portion of the flexible flat cable is mounted on a printed wiring board. 図7は、図6に示す係合部材及び位置決め部材の貫通孔への挿入状態を示す要部平面図である。FIG. 7 is a plan view of a principal part showing a state in which the engaging member and the positioning member shown in FIG. 6 are inserted into the through holes. 図8は、係合部材の挿入部による位置合わせを説明するための図であり、(a)は挿入部と貫通孔との関係を示す図、(b)は貫通孔及び係合部材のサイズと移動可能量との関係を示す図である。FIGS. 8A and 8B are diagrams for explaining alignment by the insertion portion of the engaging member, where FIG. 8A is a diagram illustrating a relationship between the insertion portion and the through hole, and FIG. 8B is a size of the through hole and the engaging member. It is a figure which shows the relationship between and a movable amount. 図9Aは、本発明の実施の形態に係るフレキシブルフラットケーブルの端末部を示す、図6のB−B線断面図である。FIG. 9A is a cross-sectional view taken along line B-B in FIG. 6 showing a terminal portion of the flexible flat cable according to the embodiment of the present invention. 図9Bは、本発明の実施の形態に係るフレキシブルフラットケーブルの端末部を示す、図6のB−B線断面図である。9B is a cross-sectional view taken along line B-B in FIG. 6, showing a terminal portion of the flexible flat cable according to the embodiment of the present invention. 図9Cは、本発明の実施の形態に係るフレキシブルフラットケーブルの端末部を示す、図6のB−B線断面図である。9C is a cross-sectional view taken along line B-B in FIG. 6, showing a terminal portion of the flexible flat cable according to the embodiment of the present invention. 図9Dは、本発明の実施の形態に係るフレキシブルフラットケーブルの端末部を示す、図6のB−B線断面図である。FIG. 9D is a cross-sectional view taken along line B-B in FIG. 6 showing a terminal portion of the flexible flat cable according to the embodiment of the present invention. 図9Eは、本発明の実施の形態に係るフレキシブルフラットケーブルの端末部を示す、図6のC−C線断面図である。FIG. 9E is a cross-sectional view taken along the line CC of FIG. 6 showing a terminal portion of the flexible flat cable according to the embodiment of the present invention. 図9Fは、本発明の実施の形態に係るフレキシブルフラットケーブルの端末部を示す、図6のC−C線断面図である。FIG. 9F is a cross-sectional view taken along the line CC of FIG. 6 showing a terminal portion of the flexible flat cable according to the embodiment of the present invention. 図10は、本実施の形態の変形例1として、係合部材及び位置決め部材の接合方法を示す、図6のB−B線断面図である。FIG. 10 is a cross-sectional view taken along the line BB of FIG. 6 showing a joining method of the engaging member and the positioning member as the first modification of the present embodiment. 図11は、本実施の形態の変形例2として、2つのプリント配線板を図1に示すフレキシブルフラットケーブルで接続する場合を説明するための図である。FIG. 11 is a diagram for explaining a case where two printed wiring boards are connected by the flexible flat cable shown in FIG. 1 as a second modification of the present embodiment. 図12は、本実施の形態の変形例3に係るフレキシブルフラットケーブルの位置決め部材を示す要部平面図である。FIG. 12 is a main part plan view showing a positioning member of the flexible flat cable according to the third modification of the present embodiment. 図13は、本実施の形態の変形例4に係るフレキシブルフラットケーブルの位置決め部材を示す要部平面図である。FIG. 13 is a main part plan view showing a positioning member of the flexible flat cable according to the fourth modification of the present embodiment. 図14は、本実施の形態の変形例5に係るフレキシブルフラットケーブルの係合部材を展開した状態を示す平面図である。FIG. 14 is a plan view showing a state where the engaging member of the flexible flat cable according to the fifth modification of the present embodiment is developed. 図15は、図14に示す係合部材を折り曲げて、プリント配線板の貫通孔に挿入した状態を示す要部平面図である。FIG. 15 is a principal plan view showing a state in which the engaging member shown in FIG. 14 is bent and inserted into the through hole of the printed wiring board.

以下、本発明の実施の形態及び変形例について図面を参照して説明する。ここでは、フレキシブルフラットケーブルをフラット配線材の代表例として説明するが、本発明は、MEJ、フレキシブルプリント配線板などの他のフラット配線材に適用することが可能である。なお、各図中、実質的に同一の機能を有する構成要素については、同一の符号を付してその重複した説明を省略する。   Hereinafter, embodiments and modifications of the present invention will be described with reference to the drawings. Here, a flexible flat cable will be described as a representative example of a flat wiring material, but the present invention can be applied to other flat wiring materials such as MEJ and flexible printed wiring boards. In addition, in each figure, about the component which has the substantially same function, the same code | symbol is attached | subjected and the duplicate description is abbreviate | omitted.

[実施の形態の要約]
本実施の形態のフラット配線材は、間隔を設けて幅方向に並列に配置された複数の導体と、前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材とを備えたフラット配線材において、前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、前記係合部材を前記被覆部材に固定する固定部材と、前記複数の導体に並列に配置され、先端部に形成された挿入部が前記被実装基板に形成された穴に挿入されて前記複数の導体を位置決めする位置決め部材とを備える。
[Summary of embodiment]
The flat wiring material according to the present embodiment includes a plurality of conductors arranged in parallel in the width direction at intervals, and an insulating coating that collectively covers the plurality of conductors so that both ends thereof are exposed. In the flat wiring member provided with the member, the insertion portion is provided at a position close to at least one of the both end portions where the plurality of conductors on the covering member are exposed, and is formed at the end portion extending in the width direction. Is disposed in parallel with the plurality of conductors, and is formed at the distal end portion. The engaging member is inserted into and engaged with the through hole formed in the mounting substrate, the fixing member that fixes the engaging member to the covering member, and the plurality of conductors. And a positioning member that positions the plurality of conductors by being inserted into a hole formed in the mounted substrate.

また、本実施の形態の実装体は、上記実施の形態のフラット配線材と、前記フラット配線材の前記係合部材の前記挿入部が挿入される前記貫通孔と、及び前記位置決め部材の前記挿入部が挿入される穴と、前記複数の導体とはんだ接続される電極部とを有する被実装基板とを備える。   Further, the mounting body of the present embodiment includes the flat wiring member of the above embodiment, the through hole into which the insertion portion of the engaging member of the flat wiring member is inserted, and the insertion of the positioning member. A mounting substrate having a hole into which the portion is inserted and an electrode portion that is solder-connected to the plurality of conductors.

また、本実施の形態のフラット配線材は、間隔を設けて幅方向に並列に配置された複数の導体と、前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材とを備えたフラット配線材において、前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、前記係合部材を前記被覆部材に固定する固定部材とを備え、前記係合部材の前記挿入部は、前記幅方向に対して所定角度傾斜している。   Further, the flat wiring material of the present embodiment has a plurality of conductors arranged in parallel in the width direction at intervals, and an insulating property that covers the plurality of conductors in a lump so that both ends thereof are exposed. In the flat wiring member provided with the covering member, the plurality of conductors on the covering member are provided at positions close to at least one of the both end portions where the plurality of conductors are exposed, and are formed at the end portions extending in the width direction. An engaging member that is inserted into and engaged with a through hole formed in the mounted substrate; and a fixing member that fixes the engaging member to the covering member. It is inclined at a predetermined angle with respect to the width direction.

また、本実施の形態の実装体は、上記実施の形態のフラット配線材と、前記フラット配線材の前記係合部材の前記挿入部が挿入される前記貫通孔と、前記複数の導体とはんだ接続される電極部とを有する被実装基板とを備える。   Further, the mounting body according to the present embodiment includes the flat wiring material according to the above-described embodiment, the through hole into which the insertion portion of the engaging member of the flat wiring material is inserted, and the plurality of conductors and the solder connection. And a mounted substrate having an electrode portion to be mounted.

「被実装基板」とは、本フレキシブルフラットケーブルの一方又は両方の端末部が電気的に接続される基板をいい、例えばプリント配線板等である。係合部材と被覆部材との「固定」には、接着剤による接着や加熱と冷却による溶着(融着)、超音波溶着等が含まれる。「近接した位置」とは、係合部材が導体が露出する端部から僅かに(例えば係合部材の幅よりも短い距離)離れた位置だけでなく、一部が重なる位置でもよい。被実装基板に形成された「穴」は、被実装基板を貫通したものでも、貫通していないものでもよい。   “Mounted substrate” refers to a substrate to which one or both terminal portions of the flexible flat cable are electrically connected, such as a printed wiring board. The “fixing” between the engaging member and the covering member includes adhesion by an adhesive, welding (fusion) by heating and cooling, ultrasonic welding, and the like. The “close position” is not limited to a position where the engaging member is slightly separated from the end where the conductor is exposed (for example, a distance shorter than the width of the engaging member), but may also be a position where a part of the engaging member overlaps. The “hole” formed in the substrate to be mounted may be a hole that penetrates the substrate to be mounted or a hole that does not penetrate.

係合部材を固定部材によって複数の導体を被覆する被覆部材に固定することで、複数の導体の露出部に対する係合部材の位置が定まり、係合部材を被実装基板に対する位置決めとして用いることが可能となる。係合部材と位置決め部材を用いることで、導体の露出部と被実装基板の電極部との間の互いに異なる2方向、例えば互いに直交する2方向の位置合わせの精度が向上する。   By fixing the engaging member to the covering member that covers the plurality of conductors by the fixing member, the position of the engaging member with respect to the exposed portion of the plurality of conductors can be determined, and the engaging member can be used for positioning with respect to the mounted substrate. It becomes. By using the engaging member and the positioning member, the accuracy of alignment in two different directions, for example, two directions orthogonal to each other, between the exposed portion of the conductor and the electrode portion of the mounted substrate is improved.

[実施の形態]
図1は、本発明の実施の形態に係るフレキシブルフラットケーブルの外観を示し、(a)は平面図、(b)は正面図である。図2は、図1(a)に示すフレキシブルフラットケーブルの係合部材を展開した状態の平面図である。図3は、信号用導体の露出部及び係合部材の露出部を示す図である。
[Embodiment]
1A and 1B show the appearance of a flexible flat cable according to an embodiment of the present invention, where FIG. 1A is a plan view and FIG. 1B is a front view. FIG. 2 is a plan view showing a state where the engaging member of the flexible flat cable shown in FIG. FIG. 3 is a view showing an exposed portion of the signal conductor and an exposed portion of the engaging member.

このフレキシブルフラットケーブル1は、図1に示すように、間隔を設けて幅方向に並列に配置された複数の信号用導体2、及び複数の信号用導体2を両端部が露出するように一括して被覆する絶縁性の被覆部材3とを備えるケーブル本体1aと、複数の信号用導体2を幅方向に横断するように配置され、ケーブル本体1aを被実装基板として例えばプリント配線板に仮止めするための係合部材4と、係合部材4を被覆部材3の両端部(信号用導体2の露出部20に近接した位置)に固定する固定部材5と、複数の信号用導体2とともに両端部が露出するように被覆部材3により一括して被覆され、各信号用導体2を位置決めするための位置決め部材6とを備える。係合部材4及び固定部材5は、ケーブル本体1aの接続形態に応じて、ケーブル本体1aの片端、または両端に設けることができる。   As shown in FIG. 1, the flexible flat cable 1 includes a plurality of signal conductors 2 and a plurality of signal conductors 2 arranged in parallel in the width direction at intervals so that both ends are exposed. A cable main body 1a having an insulating covering member 3 for covering and a plurality of signal conductors 2 are arranged so as to cross the width direction, and the cable main body 1a is temporarily fixed to, for example, a printed wiring board as a substrate to be mounted. Engaging member 4, a fixing member 5 that fixes the engaging member 4 to both end portions (positions close to the exposed portion 20 of the signal conductor 2) of the covering member 3, and both end portions together with the plurality of signal conductors 2 And a positioning member 6 for positioning the signal conductors 2 together. The engaging member 4 and the fixing member 5 can be provided at one end or both ends of the cable body 1a according to the connection form of the cable body 1a.

なお、本明細書において、固定部材5及び信号用導体2の露出部20の近傍をケーブル本体1aの「端末部」1bと称する。本実施の形態のフレキシブルフラットケーブル1は、両方にプリント配線板に実装される端末部1bを有する。   In this specification, the vicinity of the fixing member 5 and the exposed portion 20 of the signal conductor 2 is referred to as a “terminal portion” 1b of the cable body 1a. The flexible flat cable 1 of this Embodiment has the terminal part 1b mounted in a printed wiring board in both.

(信号用導体)
信号用導体2は、両端部に被覆部材3から露出する露出部20を有する。露出部20は、図3に示すように、先端部のはんだ接続部(第1の接続部)22の下面22aが固定部材5の下面5b(上面5aと反対側の面)とほぼ同一の面となるように、折曲部21a、21bにより折り曲げられてS字形状(ガルウイング形状)が形成されている。はんだ接続部22の下面22aは、プリント配線板に形成された対応する電極部にはんだにより接続される。折曲部21a、21bの折り曲げ角度は90度以下が好ましい。この角度とすることで、はんだがはんだ自体の表面積を小さくしようとする表面張力の作用が働き、はんだのぬれ上がりをはんだ接続部22の下面22aのみではなく、折曲部21bより固定部材5側にも生じさせることができる。このようにはんだのぬれ上がり量を多くすることで、接続強度を向上させることができる。
(Signal conductor)
The signal conductor 2 has exposed portions 20 exposed from the covering member 3 at both ends. As shown in FIG. 3, the exposed portion 20 has a lower surface 22 a of the solder connection portion (first connection portion) 22 at the tip end portion that is substantially the same as the lower surface 5 b (surface opposite to the upper surface 5 a) of the fixing member 5. As shown, the bent portions 21a and 21b are bent to form an S-shape (gull wing shape). The lower surface 22a of the solder connection portion 22 is connected to a corresponding electrode portion formed on the printed wiring board by solder. The bending angle of the bent portions 21a and 21b is preferably 90 degrees or less. By setting this angle, the action of surface tension that causes the solder to reduce the surface area of the solder itself works, and the solder wetting rises not only on the lower surface 22a of the solder connection portion 22 but also on the fixing member 5 side from the bent portion 21b. Can also be generated. Thus, the connection strength can be improved by increasing the amount of solder wetting.

信号用導体2には、無酸素銅、タフピッチ銅等の銅又は銅合金を用いることができる。
銅又は銅合金の表面には、めっきを施してもよく、錫(Sn)、ニッケル(Ni)、金(Au)などの金属を単独もしくは複数の材料を積層した状態で用いてもよい。
For the signal conductor 2, copper or a copper alloy such as oxygen-free copper or tough pitch copper can be used.
The surface of copper or a copper alloy may be plated, or a metal such as tin (Sn), nickel (Ni), or gold (Au) may be used alone or in a state in which a plurality of materials are laminated.

(被覆部材)
被覆部材3には、フィルム状のポリイミド樹脂やポリエチレンテレフタレート(PET)樹脂等の絶縁性樹脂を用いることができる。
(Coating member)
For the covering member 3, an insulating resin such as a film-like polyimide resin or polyethylene terephthalate (PET) resin can be used.

(係合部材)
係合部材4は、図1(b)に示すように、固定部材5から露出している露出部40の中間部であるはんだ接続部(第2の接続部)42の下面42aが信号用導体2のはんだ接続部22の下面22aとほぼ同一の面となるように、折曲部41a、41bにより折り曲げられてS字形状(ガルウイング形状)が形成され、先端部の挿入部43がプリント配線板の表面に直交するように90度で折り曲げられた折曲部41cを有する。係合部材4のはんだ接続部42は、プリント配線板に形成された対応する電極部にはんだで接続される。折曲部41a、41bの折り曲げ角度は90度以下が好ましい。この角度とすることで、はんだがはんだ自体の表面積を小さくしようとする表面張力の作用が働き、はんだのぬれ上がりをはんだ接続部42の下面42aのみではなく、折曲部41bより固定部材5側にも生じさせることができる。このようにはんだのぬれ上がり量を多くすることで、接続強度を向上させることができる。
(Engagement member)
As shown in FIG. 1B, the engaging member 4 has a lower surface 42a of a solder connection portion (second connection portion) 42 that is an intermediate portion of the exposed portion 40 exposed from the fixing member 5 as a signal conductor. 2 is bent by the bent portions 41a and 41b so as to be substantially the same surface as the lower surface 22a of the solder connection portion 22, and an insertion portion 43 at the tip is formed on the printed wiring board. A bent portion 41c that is bent at 90 degrees so as to be orthogonal to the surface. The solder connection portion 42 of the engaging member 4 is connected to the corresponding electrode portion formed on the printed wiring board by solder. The bending angle of the bent portions 41a and 41b is preferably 90 degrees or less. By setting this angle, the action of surface tension that causes the solder to reduce the surface area of the solder itself works, and the solder wetting rises not only on the lower surface 42a of the solder connection portion 42 but also on the fixing member 5 side from the bent portion 41b. Can also be generated. Thus, the connection strength can be improved by increasing the amount of solder wetting.

挿入部43は、図2及び図3に示すように、幅方向への弾性変形を可能にするためのスリット43aが形成され、これにより弾性変形部を構成している。また、挿入部43には、プリント配線板の貫通孔への挿入を容易にするために傾斜面43bが形成され、挿入部43をプリント配線板の貫通孔に挿入した後の抜け止めとなる突起部43cが形成されている。スリット43aは、挿入部43に弾性変形部としての機能を付与するための開口部の一例である。したがって、開口部としてはスリットに限られず、丸穴、長穴等の穴でもよい。   As shown in FIGS. 2 and 3, the insertion portion 43 is formed with a slit 43a for enabling elastic deformation in the width direction, thereby constituting an elastic deformation portion. In addition, the insertion portion 43 is formed with an inclined surface 43b for facilitating insertion into the through hole of the printed wiring board, and is a protrusion that prevents the insertion portion 43 from coming off after being inserted into the through hole of the printed wiring board. A portion 43c is formed. The slit 43 a is an example of an opening for giving the insertion portion 43 a function as an elastic deformation portion. Therefore, the opening is not limited to a slit, and may be a hole such as a round hole or a long hole.

係合部材4には、信号用導体2よりも高強度(高引張り強度)の材料を用いるのが好ましく、例えばりん青銅等の銅合金や鉄(Fe)−ニッケル(Ni)合金などを用いことができる。なお、係合部材4の露出部40にも、信号用導体2の露出部20と同様の材料によるめっきを施してもよい。また、係合部材4の厚さは、信号用導体2に用いる金属材料よりも厚くするのが好ましい。高強度材料の使用や板厚の増加によって、振動負荷に対する信号用導体2のはんだ接続部22近傍部分のより高い補強効果が得られる。また、係合部材4は、上記した金属材料で構成し、その板厚を信号用導体2よりも厚くすることで、係合部材4の挿入部43をプリント配線板の貫通孔に挿入すると、剛性の低い弾性変形部が変形し、係合部材4が貫通孔に挿入されるが、この際、係合部材4の板厚が薄いと、挿入時の貫通孔からの圧力によって係合部材4の板厚方向の面外変形が発生する可能性がある。係合部材4に面外変形が生じると、変形箇所が貫通孔の端部や内面に接触して抵抗となり、係合部材4の挿入を阻害するようになる。係合部材4を厚くすることによって、プリント配線板の貫通孔への挿入時の面外変形を抑制することが可能となる。   The engaging member 4 is preferably made of a material having higher strength (high tensile strength) than the signal conductor 2, for example, a copper alloy such as phosphor bronze or an iron (Fe) -nickel (Ni) alloy. Can do. Note that the exposed portion 40 of the engaging member 4 may be plated with the same material as the exposed portion 20 of the signal conductor 2. Moreover, it is preferable that the thickness of the engaging member 4 is thicker than the metal material used for the signal conductor 2. By using a high-strength material and increasing the plate thickness, a higher reinforcing effect can be obtained in the vicinity of the solder connection portion 22 of the signal conductor 2 against the vibration load. Further, the engaging member 4 is made of the above-described metal material, and its thickness is made thicker than that of the signal conductor 2, so that when the insertion portion 43 of the engaging member 4 is inserted into the through hole of the printed wiring board, The elastic deformation portion having low rigidity is deformed and the engagement member 4 is inserted into the through hole. At this time, if the plate thickness of the engagement member 4 is thin, the engagement member 4 is caused by the pressure from the through hole at the time of insertion. There is a possibility that out-of-plane deformation occurs in the thickness direction. When out-of-plane deformation occurs in the engaging member 4, the deformed portion comes into contact with the end portion or the inner surface of the through hole and becomes resistance, thereby inhibiting insertion of the engaging member 4. By increasing the thickness of the engaging member 4, it is possible to suppress out-of-plane deformation when the printed wiring board is inserted into the through hole.

(位置決め部材)
図1、図2に示すように、並列に配置された複数の信号用導体2の両側には、位置決め部材6が信号用導体2に並列して配置されている。図3に示すように、位置決め部材6は、信号用導体2と同様に固定部材5の端部5cから露出しており、両先端部側が折り曲げ部60で折れ曲げられ、先端部に挿入部61が形成されている。
(Positioning member)
As shown in FIGS. 1 and 2, positioning members 6 are arranged in parallel with the signal conductor 2 on both sides of the plurality of signal conductors 2 arranged in parallel. As shown in FIG. 3, the positioning member 6 is exposed from the end portion 5 c of the fixing member 5 similarly to the signal conductor 2, the both end portions are bent by the bending portion 60, and the insertion portion 61 is formed at the tip portion. Is formed.

位置決め部材6は、例えば信号用導体2と同じ銅又は銅合金により形成される。位置決め部材6の表面には、信号用導体2と同様のめっきを施してもよい。   The positioning member 6 is formed of, for example, the same copper or copper alloy as the signal conductor 2. The surface of the positioning member 6 may be plated similar to the signal conductor 2.

位置決め部材6は、信号用導体2と同じ金属材料で、信号用導体2と並列した状態で形成することで、信号用導体2と同時に接着剤31を介して絶縁フィルム30で被覆し、フレキシブルフラットケーブル1として一体形成することができる。   The positioning member 6 is made of the same metal material as the signal conductor 2 and is formed in parallel with the signal conductor 2, so that the positioning member 6 is covered with the insulating film 30 via the adhesive 31 at the same time as the signal conductor 2, and is flexible flat The cable 1 can be integrally formed.

(フレキシブルフラットケーブルの層構成)
図4は、フレキシブルフラットケーブル1の層構成を示す、図1(a)のA−A線断面図である。被覆部材3は、表面の絶縁フィルム30が接着剤31によって信号用導体2に接着されている。信号用導体2と絶縁フィルム30とを接着する接着剤31には、例えばエポキシ樹脂やアクリル樹脂等の熱硬化性樹脂を用いることができる。
(Layer structure of flexible flat cable)
FIG. 4 is a cross-sectional view taken along the line AA of FIG. The covering member 3 has a surface insulating film 30 bonded to the signal conductor 2 with an adhesive 31. For the adhesive 31 that adheres the signal conductor 2 and the insulating film 30, for example, a thermosetting resin such as an epoxy resin or an acrylic resin can be used.

固定部材5は、被覆部材3の一方の面3a側に係合部材4を配置し、被覆部材3の他方の面3b側に補強用金属板52を配置し、これらを覆う絶縁フィルム50と係合部材4及び補強用金属板52を接着剤51により被覆部材3に固定し、これにより信号用導体2のはんだ接続部22近傍部分の変形を抑制する補強部材として作用する。   The fixing member 5 has an engagement member 4 disposed on the one surface 3a side of the covering member 3, a reinforcing metal plate 52 disposed on the other surface 3b side of the covering member 3, and an insulating film 50 covering them. The joint member 4 and the reinforcing metal plate 52 are fixed to the covering member 3 with the adhesive 51, thereby acting as a reinforcing member that suppresses deformation in the vicinity of the solder connection portion 22 of the signal conductor 2.

補強用金属板52は、係合部材4と同様に信号用導体2よりも高強度(高引張り強度)の材料を用いるのが好ましく、例えばりん青銅や鉄(Fe)−ニッケル(Ni)合金などを用いる。上記の条件を満たす材料であれば、補強用金属板52は、係合部材4と同じ材料を用いてもよいし、異なる材料を用いてもよい。補強用金属板52の厚さは、信号用導体2に用いる金属材よりも厚くするのが好ましい。係合部材4と相俟って高強度材料の使用や板厚の増加により、振動負荷に対する信号用導体2のはんだ接続部22近傍部分のより高い補強効果が得られる。   The reinforcing metal plate 52 is preferably made of a material having higher strength (high tensile strength) than the signal conductor 2, like the engaging member 4, such as phosphor bronze or iron (Fe) -nickel (Ni) alloy. Is used. If it is the material which satisfy | fills said conditions, the metal plate 52 for reinforcement may use the same material as the engaging member 4, and may use a different material. The reinforcing metal plate 52 is preferably thicker than the metal material used for the signal conductor 2. By using a high-strength material and increasing the plate thickness in combination with the engaging member 4, a higher reinforcing effect in the vicinity of the solder connection portion 22 of the signal conductor 2 against the vibration load can be obtained.

係合部材4、補強用金属板52及び絶縁フィルム50を信号用導体2用の被覆部材3に接着する接着剤51には、絶縁フィルム30を信号用導体2に接着する接着剤31と同じ材料を用いてもよい。   The adhesive 51 that bonds the engaging member 4, the reinforcing metal plate 52, and the insulating film 50 to the covering member 3 for the signal conductor 2 is the same material as the adhesive 31 that bonds the insulating film 30 to the signal conductor 2. May be used.

図5は、係合部材4の形状を示すために部分的に固定部材5を取り除いた係合部材4の平面図である。なお、同図は、係合部材4の折り曲げ前の状態を示している。係合部材4は、露出部40よりも広い幅広部45を有している。これによっても信号用導体2のはんだ接続部22近傍部分を補強する効果が得られる。   FIG. 5 is a plan view of the engaging member 4 with the fixing member 5 partially removed to show the shape of the engaging member 4. The figure shows a state before the engagement member 4 is bent. The engaging member 4 has a wide portion 45 wider than the exposed portion 40. This also provides the effect of reinforcing the vicinity of the solder connection portion 22 of the signal conductor 2.

(フレキシブルフラットケーブルの製造方法)
次に、本実施の形態のフレキシブルフラットケーブル1の製造方法の一例について説明する。まず、複数の信号用導体2、一対の係合部材4及び一対の位置決め部材6を準備する。次に、複数の信号用導体2及び一対の位置決め部材6に接着剤31を用いて絶縁フィルム30を接着して被覆部材3を形成する。
(Method for manufacturing flexible flat cable)
Next, an example of the manufacturing method of the flexible flat cable 1 of this Embodiment is demonstrated. First, a plurality of signal conductors 2, a pair of engaging members 4, and a pair of positioning members 6 are prepared. Next, the insulating film 30 is bonded to the plurality of signal conductors 2 and the pair of positioning members 6 using the adhesive 31 to form the covering member 3.

次に、信号用導体2及び一対の位置決め部材6を被覆した被覆部材3の一方の面3a側の信号用導体2が露出する両端部に近接した位置に係合部材4を配置し、被覆部材3の他方の面3b側の信号用導体2が露出する両端部に近接した位置に補強用金属板52を配置し、接着剤51を用いて係合部材4、補強用金属板52及び絶縁フィルム50を被覆部材3に接着する。   Next, the engaging member 4 is arranged at a position close to both ends where the signal conductor 2 on the one surface 3a side of the covering member 3 covering the signal conductor 2 and the pair of positioning members 6 is exposed, and the covering member The reinforcing metal plate 52 is disposed at a position close to both ends where the signal conductor 2 on the other surface 3b side of the exposed portion 3 is exposed, and the engaging member 4, the reinforcing metal plate 52, and the insulating film are used using an adhesive 51. 50 is bonded to the covering member 3.

(プリント配線板への実装方法)
次に、本実施の形態に係るフレキシブルフラットケーブル1のプリント配線板10への実装方法を図面を参照して説明する。
(Mounting method on printed wiring board)
Next, the mounting method to the printed wiring board 10 of the flexible flat cable 1 which concerns on this Embodiment is demonstrated with reference to drawings.

図6は、フレキシブルフラットケーブル1の端末部1bをプリント配線板10に実装した状態を示す要部平面図である。図7は、図6に示す係合部材4及び位置決め部材6の貫通孔15、16への挿入状態を示す要部平面図である。図8は、係合部材4の挿入部43による位置合わせを説明するための図であり、(a)は挿入部43と貫通孔15との関係を示す図、(b)は貫通孔15及び係合部材4のサイズと移動可能量との関係を示す図である。   FIG. 6 is a main part plan view showing a state in which the terminal portion 1 b of the flexible flat cable 1 is mounted on the printed wiring board 10. FIG. 7 is a main part plan view showing a state where the engaging member 4 and the positioning member 6 shown in FIG. 6 are inserted into the through holes 15 and 16. FIGS. 8A and 8B are diagrams for explaining the alignment of the engaging member 4 by the insertion portion 43. FIG. 8A is a diagram showing the relationship between the insertion portion 43 and the through hole 15, and FIG. It is a figure which shows the relationship between the size of the engagement member 4, and a movable amount.

プリント配線板10は、図6に示すように、絶縁基材11と、絶縁基材11の表面に形成され、信号用導体2のはんだ接続部22がはんだ接続される電極部(第1の電極部)12A、及び係合部材4のはんだ接続部42がはんだ接続される電極部(第2の電極部)12Bと、絶縁基材11の表面の電極部12A、12B以外の領域に形成されたソルダレジスト13と、絶縁基材11を貫通する貫通孔15、16とを備える。貫通孔15には、係合部材4の挿入部43が挿入され、貫通孔16には、位置決め部材6の挿入部61が挿入される。   As shown in FIG. 6, the printed wiring board 10 is formed on the surface of the insulating base 11 and the surface of the insulating base 11, and the electrode portion (first electrode) to which the solder connection portion 22 of the signal conductor 2 is solder-connected. Part) 12 </ b> A and the electrode part (second electrode part) 12 </ b> B to which the solder connection part 42 of the engagement member 4 is solder-connected, and the electrode part 12 </ b> A, 12 </ b> B on the surface of the insulating base 11. A solder resist 13 and through holes 15 and 16 penetrating the insulating substrate 11 are provided. The insertion portion 43 of the engaging member 4 is inserted into the through hole 15, and the insertion portion 61 of the positioning member 6 is inserted into the through hole 16.

図7に示すように、貫通孔15、16のそれぞれの直径をD1、D2とする。係合部材4の挿入部43の幅及び厚さをそれぞれW1、t1とし、位置決め部材6の挿入部61の幅及び厚さをそれぞれW2、t2とする。   As shown in FIG. 7, the diameters of the through holes 15 and 16 are D1 and D2, respectively. The width and thickness of the insertion portion 43 of the engaging member 4 are W1 and t1, respectively, and the width and thickness of the insertion portion 61 of the positioning member 6 are W2 and t2, respectively.

図8(a)に示すように、直径D1の貫通孔15に幅W1、厚さt1の係合部材4の挿入部43を挿入した場合、係合部材4は、厚さ方向xに最大xaだけ移動することができ、幅方向yに最大yaだけ移動することができる。ここで、図8(b)に示すように、貫通孔15の直径D1を2mm、係合部材4の挿入部43の幅W1を1.9mm、厚さt1を0.2mmで上記xa、yaを見積もると、xa=0.21mm、ya=0.05mmとなる。すなわち、幅方向yよりも厚さ方向xの移動量が大きくなる。この移動量(xa、ya)が信号用導体2のはんだ接続部22とプリント配線板10の電極部12Aとの位置合わせ精度に影響し、移動量が小さいほど精度の良い位置合わせが実施できる。図8に示した状態では、係合部材4の幅方向(図8のy方向)の位置合わせ精度が係合部材4の厚さ方向(図8のx方向)より良好となる。したがって、直交する2方向(x方向、y方向)の位置合わせ精度を向上するためには、図8に示した係合部材4に加えて、図8の係合部材4の挿入部43の幅方向と交差する方向、例えば直交する方向が幅方向となるように位置決め部材6の挿入部61を設け、係合部材4の挿入部43及び位置決め部材6の挿入部61をプリント配線板10の貫通孔15、16にそれぞれ挿入することで、直交2方向の位置合わせ精度を同時に向上することが可能となる。   As shown in FIG. 8A, when the insertion portion 43 of the engagement member 4 having the width W1 and the thickness t1 is inserted into the through-hole 15 having the diameter D1, the engagement member 4 has a maximum xa in the thickness direction x. Only a maximum of ya in the width direction y. Here, as shown in FIG. 8B, when the diameter D1 of the through hole 15 is 2 mm, the width W1 of the insertion portion 43 of the engagement member 4 is 1.9 mm, and the thickness t1 is 0.2 mm, the above xa, ya Is estimated to be xa = 0.21 mm and ya = 0.05 mm. That is, the movement amount in the thickness direction x is larger than that in the width direction y. The amount of movement (xa, ya) affects the alignment accuracy between the solder connection portion 22 of the signal conductor 2 and the electrode portion 12A of the printed wiring board 10. The smaller the amount of movement, the more accurate alignment can be performed. In the state shown in FIG. 8, the alignment accuracy of the engagement member 4 in the width direction (y direction in FIG. 8) is better than the thickness direction of the engagement member 4 (x direction in FIG. 8). Therefore, in order to improve the alignment accuracy in two orthogonal directions (x direction and y direction), in addition to the engaging member 4 shown in FIG. 8, the width of the insertion portion 43 of the engaging member 4 in FIG. The insertion portion 61 of the positioning member 6 is provided so that the direction intersecting the direction, for example, the direction orthogonal to the width direction, is the width direction, and the insertion portion 43 of the engaging member 4 and the insertion portion 61 of the positioning member 6 are passed through the printed wiring board 10. By inserting the holes 15 and 16 respectively, it is possible to simultaneously improve the alignment accuracy in the two orthogonal directions.

図9A〜図9Fは、本発明の実施の形態に係るフレキシブルフラットケーブルの端末部を示す要部断面図である。   FIG. 9A to FIG. 9F are main part cross-sectional views showing the terminal part of the flexible flat cable according to the embodiment of the present invention.

フレキシブルフラットケーブル1を実装するプリント配線板10は、図9Aに示すように、絶縁基材11と、絶縁基材11の表面11aに形成された電極部12A及びソルダレジスト13と、電極部12Aの表面に形成されたはんだ14Aと、絶縁基材11を貫通する貫通孔15、16とを備える。   As shown in FIG. 9A, the printed wiring board 10 on which the flexible flat cable 1 is mounted includes an insulating base 11, an electrode portion 12A and a solder resist 13 formed on the surface 11a of the insulating base 11, and an electrode portion 12A. A solder 14 </ b> A formed on the surface and through holes 15 and 16 penetrating the insulating base material 11 are provided.

プリント配線板10の貫通孔15、16は、プリント配線板10にドリルやレーザーなどで孔あけ加工した状態となっている。貫通孔15は、孔あけ加工後に、貫通孔15、16の内面にめっきによってニッケル(Ni)や金(Au)などで構成される電極部を形成してもよい。   The through holes 15 and 16 of the printed wiring board 10 are in a state in which the printed wiring board 10 is drilled with a drill or a laser. The through-hole 15 may form an electrode part made of nickel (Ni), gold (Au), or the like on the inner surface of the through-holes 15 and 16 after the drilling process.

図9Aに示すように、係合部材4の挿入部43をプリント配線板10の貫通孔15にプリント配線板10の表面11a側から挿入する。係合部材4の挿入部43の突起部43cの上端43d間の幅W3は、挿入部43が貫通孔15に未挿入の状態では、貫通孔15の直径D1よりサイズが大きくなっている(すなわちW3>D1)。   As shown in FIG. 9A, the insertion portion 43 of the engaging member 4 is inserted into the through hole 15 of the printed wiring board 10 from the surface 11 a side of the printed wiring board 10. The width W3 between the upper ends 43d of the protrusions 43c of the insertion portion 43 of the engaging member 4 is larger than the diameter D1 of the through-hole 15 when the insertion portion 43 is not inserted into the through-hole 15 (that is, W3> D1).

また、挿入部43の突起部43cより上側部分44の幅W1は、貫通孔15の直径D1よりサイズが小さく設定されている(すなわちW1<D1)。係合部材4の上側部分44の挿入方向と直交する方向のサイズ(幅W1及び厚さ)を貫通孔15の直径D1より小さくすることにより、はんだ14Aがプリコートされたプリント配線板10の電極部12A上に信号用導体2のはんだ接続部22を配置し、はんだ14Aを加熱溶融させた際の係合部材4の下方向への変位に係合部材4が貫通孔15からの抵抗を受けることなく追従できるようになる。   In addition, the width W1 of the upper portion 44 from the protrusion 43c of the insertion portion 43 is set to be smaller than the diameter D1 of the through hole 15 (that is, W1 <D1). By making the size (width W1 and thickness) in the direction orthogonal to the insertion direction of the upper portion 44 of the engaging member 4 smaller than the diameter D1 of the through hole 15, the electrode portion of the printed wiring board 10 pre-coated with the solder 14A When the solder connection portion 22 of the signal conductor 2 is disposed on 12A and the solder 14A is heated and melted, the engagement member 4 receives resistance from the through hole 15 due to the downward displacement of the engagement member 4. It will be possible to follow.

係合部材4をプリント配線板10の貫通孔15にさらに挿入していくと、弾性変形部は貫通孔15の内面からの圧力によって、その幅を狭くする方向に次第に変形していく。さらに挿入すると、図9Bに示すように、突起部43cの上端43dも貫通孔15の内部に挿入され、貫通孔15の内面に接触しながら挿入方向(図では下側)に移動していく。このとき、突起部43cの上端43dより上側部分44は、この部分の幅W1が貫通孔15の直径D1以下となっているので、貫通孔15の内面に接触することなく挿入方向へ移動する。   When the engaging member 4 is further inserted into the through hole 15 of the printed wiring board 10, the elastically deforming portion is gradually deformed in the direction of narrowing the width by the pressure from the inner surface of the through hole 15. When further inserted, as shown in FIG. 9B, the upper end 43d of the projection 43c is also inserted into the through hole 15, and moves in the insertion direction (downward in the figure) while contacting the inner surface of the through hole 15. At this time, the portion 44 above the upper end 43d of the protrusion 43c moves in the insertion direction without contacting the inner surface of the through hole 15 because the width W1 of this portion is equal to or smaller than the diameter D1 of the through hole 15.

さらに係合部材4を挿入していくと、図9Cに示すように、突起部43cの上端43dは貫通孔15から突出する。このとき、位置決め部材6の挿入部61は、貫通孔16に挿入される。突起部43cの上端43dが貫通孔15から突出すると、弾性変形部分は外側、すなわち幅が広がる方向に弾性力によって変形し、貫通孔15に挿入する前の幅W3まで復元する。係合部材4の挿入部43の最大幅W3が貫通孔15の直径D1よりも大きいため、突起部43cの上端43dはプリント配線板10の裏面に接触して係止されるようになり、振動などによって作用する機械的負担が加わった際に、係合部材4が挿入方向とは逆方向に抜けるのを抑えることができる。   When the engagement member 4 is further inserted, the upper end 43d of the protrusion 43c protrudes from the through hole 15 as shown in FIG. 9C. At this time, the insertion portion 61 of the positioning member 6 is inserted into the through hole 16. When the upper end 43d of the projection 43c protrudes from the through hole 15, the elastically deformed portion is deformed by an elastic force in the outside, that is, in the direction in which the width increases, and is restored to the width W3 before being inserted into the through hole 15. Since the maximum width W3 of the insertion portion 43 of the engagement member 4 is larger than the diameter D1 of the through hole 15, the upper end 43d of the projection 43c comes into contact with and is locked on the back surface of the printed wiring board 10, and vibrations It is possible to prevent the engaging member 4 from coming off in the direction opposite to the insertion direction when a mechanical load acting due to the above is applied.

また、信号用導体2のはんだ接続部22は、係合部材4及び位置決め部材6をプリント配線板10の貫通孔15、16に挿入することによって、はんだ接続部22を接続するプリント配線板10の対応する電極部12Aとの位置合わせがなされる。すなわち、係合部材4に設けられた弾性変形部として機能する挿入部43と、挿入部43に設けた突起部43cとによって、信号用導体2をそれぞれ対応するプリント配線板10の電極部12Aに位置合わせした状態でフレキシブルフラットケーブル1をプリント配線板10に仮固定することができる。   Further, the solder connection portion 22 of the signal conductor 2 is inserted into the through holes 15 and 16 of the printed wiring board 10 by inserting the engaging member 4 and the positioning member 6 into the printed wiring board 10 to which the solder connection portion 22 is connected. Positioning with the corresponding electrode portion 12A is performed. That is, the signal conductors 2 are respectively connected to the corresponding electrode portions 12A of the printed wiring board 10 by the insertion portion 43 functioning as an elastic deformation portion provided in the engaging member 4 and the projection portion 43c provided in the insertion portion 43. The flexible flat cable 1 can be temporarily fixed to the printed wiring board 10 in the aligned state.

電極部12Aは、プリント配線板10の表面11aに形成されたソルダレジスト13から露出しており、信号用導体2のはんだ接続部22との電気的接続が可能となっている。係合部材4の突起部43cの上端43dがプリント配線板10の裏面11bまで貫通して係止されることで、信号用導体2のはんだ接続部22は、電極部12A上にあらかじめ塗布されていたはんだ14A上に配置された状態で固定される。貫通孔15内部に位置する突起部43cの上端43dより上側部分44は、その幅W1が貫通孔15の直径D1より小さいので、貫通孔15の内面に接触しないか、部分的に接触した場合でも過大な圧力を受けない状態で保持される。   The electrode portion 12A is exposed from the solder resist 13 formed on the surface 11a of the printed wiring board 10, and can be electrically connected to the solder connection portion 22 of the signal conductor 2. Since the upper end 43d of the protrusion 43c of the engaging member 4 penetrates and is locked to the back surface 11b of the printed wiring board 10, the solder connection portion 22 of the signal conductor 2 is applied in advance on the electrode portion 12A. It is fixed in a state of being disposed on the solder 14A. Since the width W1 of the portion 44 above the upper end 43d of the protrusion 43c located inside the through hole 15 is smaller than the diameter D1 of the through hole 15, even if it does not contact or partially contacts the inner surface of the through hole 15. It is held in a state where it does not receive excessive pressure.

図9Cに示した状態で保持されたフレキシブルフラットケーブル1の信号用導体2のはんだ接続部22を加熱することによってはんだ14Aを溶融させ、図9Dに示すように、信号用導体2のはんだ接続部22とプリント配線板10の電極部12Aとをはんだ14Aによって接続する。はんだ14Aが溶融すると、フレキシブルフラットケーブル1の自重や、加熱ツールを用いたはんだ接続の場合には、はんだ接続部22上部から加えられる荷重によって、はんだ接続部22は下方向、図9Dではプリント配線板10の方向に沈み込むように変位する。上記したように突起部43cの上端43dより上側部分44は、貫通孔15の内面からの圧力を受けないので、このはんだ接続による変位に容易に追従して貫通孔15に挿入された係合部材4も下方向に変位する。はんだ14Aが凝固して信号用導体2のはんだ接続部22が電極部12Aに接続された状態では、係合部材4の突起部43cの上端43dとプリント配線板10の裏面11bの間に、はんだ接続部22の沈み込み変位に対応したギャップSが生じる。   The solder 14A is melted by heating the solder connection portion 22 of the signal conductor 2 of the flexible flat cable 1 held in the state shown in FIG. 9C, and the solder connection portion of the signal conductor 2 as shown in FIG. 9D. 22 and the electrode part 12A of the printed wiring board 10 are connected by solder 14A. When the solder 14A is melted, the weight of the flexible flat cable 1 or solder connection using a heating tool causes the solder connection portion 22 to move downward due to the load applied from the upper portion of the solder connection portion 22. In FIG. It is displaced so as to sink in the direction of the plate 10. As described above, the upper portion 44d from the upper end 43d of the projection 43c is not subjected to pressure from the inner surface of the through hole 15, so that the engaging member inserted into the through hole 15 easily follows the displacement due to this solder connection. 4 is also displaced downward. In a state where the solder 14A is solidified and the solder connection portion 22 of the signal conductor 2 is connected to the electrode portion 12A, the solder 14A is disposed between the upper end 43d of the protrusion 43c of the engagement member 4 and the back surface 11b of the printed wiring board 10. A gap S corresponding to the sinking displacement of the connecting portion 22 is generated.

上記したはんだ溶融時の沈み込みによる変位に係合部材4が追従して変位することで、外部からの抵抗を受けずに沈み込むことができるため、はんだ接続部22に対するはんだぬれ広がり性が向上し、ボイド(空孔)を排除し、はんだフィレットが形成された良好なはんだ接続を得ることができる。   Since the engaging member 4 follows the displacement due to the sinking when the solder is melted as described above, it can sink without receiving resistance from the outside, so that the solder wettability to the solder connection portion 22 is improved. In addition, voids (voids) can be eliminated, and a good solder connection in which a solder fillet is formed can be obtained.

上記したように、係合部材4は、被覆部材3の両端部において、複数の信号用導体2をその幅方向に横断するように配置され、係合部材4の固定部材5は、信号用導体2の固定部材5の端部5cやはんだ接続部22近傍の機械的負荷による変形を抑える補強部材となる。   As described above, the engaging member 4 is disposed at both ends of the covering member 3 so as to cross the plurality of signal conductors 2 in the width direction, and the fixing member 5 of the engaging member 4 is the signal conductor. 2 is a reinforcing member that suppresses deformation due to a mechanical load in the vicinity of the end portion 5c of the fixing member 5 and the solder connection portion 22.

この係合部材4による変形抑制効果をより向上するため、図9E、図9Fに示すように、係合部材4のはんだ接続部42を、信号用導体2と同様にプリント配線板10の電極部12Bにはんだ接続する。係合部材4を備えたフレキシブルフラットケーブル1は、図9Eに示すように、係合部材4の挿入部43をプリント配線板10の貫通孔15に挿入することで、プリント配線板10の表面に配置される。信号用導体2のはんだ接続部22及び係合部材4のはんだ接続部42にそれぞれ対応したプリント配線板10の電極部12A、12Bには、はんだ14A、14Bがあらかじめ塗布されている。この状態ではんだを加熱・溶融することで信号用導体2と係合部材4のはんだ接続部22、42はそれぞれ電極部12A、12Bに接続される。   In order to further improve the deformation suppressing effect by the engaging member 4, as shown in FIGS. 9E and 9F, the solder connecting portion 42 of the engaging member 4 is connected to the electrode portion of the printed wiring board 10 in the same manner as the signal conductor 2. Solder connection to 12B. As shown in FIG. 9E, the flexible flat cable 1 including the engaging member 4 is inserted on the surface of the printed wiring board 10 by inserting the insertion portion 43 of the engaging member 4 into the through hole 15 of the printed wiring board 10. Be placed. Solder 14A and 14B are applied in advance to the electrode portions 12A and 12B of the printed wiring board 10 corresponding to the solder connection portion 22 of the signal conductor 2 and the solder connection portion 42 of the engaging member 4, respectively. By heating and melting the solder in this state, the signal conductor 2 and the solder connection portions 22 and 42 of the engagement member 4 are connected to the electrode portions 12A and 12B, respectively.

なお、プリント配線板10の電極部12A、12Bに塗布されるはんだ14A、14Bは、フラックスや溶剤などを含むペースト状はんだとして供給される。また、プリント配線板10の電極部12A、12Bにペースト状はんだを塗布した後に加熱・溶融させ、凝固させた状態のはんだでもよい。   Note that the solders 14A and 14B applied to the electrode portions 12A and 12B of the printed wiring board 10 are supplied as paste solder containing a flux, a solvent, and the like. Alternatively, it may be a solder in a state where paste-like solder is applied to the electrode portions 12A and 12B of the printed wiring board 10 and then heated and melted to be solidified.

(本実施の形態の効果)
本実施の形態によれば、係合部材4を備えたフレキシブルフラットケーブル及びそれを用いた実装体によれば、はんだがプリコートされたプリント配線板10の電極部12Aにフレキシブルフラットケーブルの信号用導体2の露出部20をはんだで直接接続する場合でも、信号用導体2の露出部20をそれぞれ対応するプリント配線板10の電極部12Aに信号用導体2の長手方向と幅方向について正確に位置合わせした状態で仮止めし、仮止めした後にはんだ溶融時の信号用導体2の露出部20の沈み込み動作に追従して、はんだ接続時の不具合を抑制することができ、長期間の振動負荷や熱負荷に対しても安定かつ高信頼のはんだ接続が実現可能となる。また、機械的負荷が加わった場合のフレキシブルフラットケーブル1自体の振動変形による信号用導体2のはんだ接続部22での損傷発生を抑制し、さらにプリント配線板10へのフレキシブルフラットケーブル1の実装工程数の増加も抑制した健全なフレキシブルフラットケーブル及びフレキシブルフラットケーブルのプリント配線板への実装体を提供することができる。具体的には、本実施の形態により、以下の効果を奏する。
(Effect of this embodiment)
According to the present embodiment, according to the flexible flat cable provided with the engaging member 4 and the mounting body using the same, the signal conductor of the flexible flat cable is applied to the electrode portion 12A of the printed wiring board 10 pre-coated with solder. Even when the exposed portions 20 of the two are directly connected by solder, the exposed portions 20 of the signal conductor 2 are accurately aligned with the corresponding electrode portions 12A of the printed wiring board 10 in the longitudinal direction and the width direction of the signal conductor 2. In this state, after temporarily fixing, following the sinking operation of the exposed portion 20 of the signal conductor 2 at the time of melting the solder, it is possible to suppress problems at the time of solder connection, A stable and highly reliable solder connection can be realized even with respect to a thermal load. In addition, the occurrence of damage at the solder connection portion 22 of the signal conductor 2 due to vibration deformation of the flexible flat cable 1 itself when a mechanical load is applied is suppressed, and the flexible flat cable 1 is mounted on the printed wiring board 10. It is possible to provide a sound flexible flat cable in which an increase in the number is suppressed and a mounting body of the flexible flat cable on a printed wiring board. Specifically, according to the present embodiment, the following effects can be obtained.

(a)係合部材4及び位置決め部材6は、金属板から形成され、係合部材4及び位置決め部材6のそれぞれの挿入部43、61の幅方向が、互いに交差する方向、例えば互いに直交する方向に形成され、各挿入部43、61をプリント配線板10の貫通孔15、16に挿入しているので、信号用導体2の長手方向と幅方向において信号用導体2の露出部20とプリント配線板10の電極部12Aとの間の位置合わせを高精度に行うことができる。(b)上記したように、係合部材4は、補強用金属板52とともに信号用導体2、位置決め部材6を被覆する絶縁フィルム30及び接着剤31と同じ材料の絶縁フィルム50及び接着剤51で被覆され、ケーブル本体1aと同様の積層構造となっている。このような構造を採用することによって、ケーブル本体1aと同じ製造方法で係合部材4及び補強用金属板52の積層構造化が可能となる。
(c)さらに、ケーブル本体1a、係合部材4及び補強用金属板52を絶縁フィルム30、50や接着剤31、51を介して所定の配置で積層し、ラミネート処理によってこれらを一体化した製造が可能である。このような一体化製造により、係合部材4や補強用金属板52は、ケーブル本体1aと強固に接着固定される。
(d)係合部材4を、信号用導体2の長手方向と略直交する向きで被覆部材3の端部近傍に信号用導体2を幅方向に横断するように設けることで、係合部材4を信号用導体2のはんだ接続部22近傍の補強部材として用いることができる。
(e)はんだ接続部22近傍を補強することによって、振動などの機械的負荷が作用した場合に、はんだ接続部22及びその近傍の信号用導体2に発生する応力を低減することができ、破断の発生を抑制することができる。
(f)係合部材4の挿入部43を除く部分(例えば幅広部45)や補強用金属板52によって、信号用導体2のはんだ接続部22近傍におけるフレキシブルフラットケーブル1の厚さ方向への変形を抑制することができる。これにより、信号用導体2のはんだ接続部22に振動などの機械的負荷が作用した場合、はんだ接続部22及びその近傍に発生する応力の低減が可能となる。この係合部材4による応力抑制効果は、係合部材4や補強用金属板52の厚さを信号用導体2よりも厚くしたことによる剛性増加によって、より高くすることができる。
(g)係合部材4を絶縁フィルム30と接着剤31を介してケーブル本体1aと一体形成しているため、係合部材4は強固にケーブル本体1aに接着される。この強固な接着によって、フレキシブルフラットケーブル1に振動負荷が作用した場合でも、係合部材4とケーブル本体1aの接着部に剥離が発生することはなく、上記した係合部材4による信号用導体2のはんだ接続部22近傍の応力低減効果を安定して維持することができる。
(h)また、係合部材4を信号用導体2とともに十分に管理された製造工程内で一体形成したフレキシブルフラットケーブル1を用いることで、信号用導体2のはんだ接続部22と係合部材4のプリント配線板10の貫通孔15に挿入する挿入部43との相対的な位置精度を高くすることができる。
(i)高精度に製造された係合部材4をプリント配線板10の貫通孔15に挿入するだけで、信号用導体2の複数のはんだ接続部22とそれらに対応するプリント配線板10の電極部14Aと位置合わせが精度良く、かつ容易に実施することができる。
(j)また、一体化によって、部品点数の増加を抑え、実装組立て作業の簡略化を図ることができる。
(A) The engaging member 4 and the positioning member 6 are formed of a metal plate, and the width directions of the insertion portions 43 and 61 of the engaging member 4 and the positioning member 6 intersect each other, for example, directions orthogonal to each other. Since the insertion portions 43 and 61 are inserted into the through holes 15 and 16 of the printed wiring board 10, the exposed portion 20 of the signal conductor 2 and the printed wiring in the longitudinal direction and the width direction of the signal conductor 2. Position alignment with the electrode part 12A of the board 10 can be performed with high accuracy. (B) As described above, the engaging member 4 is composed of the insulating film 50 and the adhesive 51 made of the same material as the insulating film 30 and the adhesive 31 covering the signal conductor 2 and the positioning member 6 together with the reinforcing metal plate 52. The laminated structure is the same as that of the cable body 1a. By adopting such a structure, the laminated structure of the engaging member 4 and the reinforcing metal plate 52 can be formed by the same manufacturing method as the cable body 1a.
(C) Furthermore, the cable body 1a, the engaging member 4 and the reinforcing metal plate 52 are laminated in a predetermined arrangement via the insulating films 30 and 50 and the adhesives 31 and 51, and these are integrated by a laminating process. Is possible. By such integrated manufacturing, the engaging member 4 and the reinforcing metal plate 52 are firmly bonded and fixed to the cable body 1a.
(D) The engagement member 4 is provided so as to cross the signal conductor 2 in the width direction in the vicinity of the end of the covering member 3 in a direction substantially orthogonal to the longitudinal direction of the signal conductor 2. Can be used as a reinforcing member in the vicinity of the solder connection portion 22 of the signal conductor 2.
(E) By reinforcing the vicinity of the solder connection portion 22, when a mechanical load such as vibration is applied, the stress generated in the solder connection portion 22 and the signal conductor 2 in the vicinity thereof can be reduced, and the breakage occurs. Can be suppressed.
(F) Deformation in the thickness direction of the flexible flat cable 1 in the vicinity of the solder connection portion 22 of the signal conductor 2 by the portion (for example, the wide portion 45) of the engaging member 4 except the insertion portion 43 and the reinforcing metal plate 52. Can be suppressed. Thereby, when a mechanical load such as vibration is applied to the solder connection portion 22 of the signal conductor 2, it is possible to reduce the stress generated in the solder connection portion 22 and the vicinity thereof. The stress suppressing effect by the engaging member 4 can be further enhanced by an increase in rigidity due to the thickness of the engaging member 4 and the reinforcing metal plate 52 being thicker than that of the signal conductor 2.
(G) Since the engaging member 4 is integrally formed with the cable body 1a via the insulating film 30 and the adhesive 31, the engaging member 4 is firmly bonded to the cable body 1a. Even when a vibration load acts on the flexible flat cable 1 due to this strong adhesion, no peeling occurs at the adhesion portion between the engagement member 4 and the cable body 1a, and the signal conductor 2 by the engagement member 4 described above. The stress reduction effect in the vicinity of the solder connection portion 22 can be stably maintained.
(H) Further, by using the flexible flat cable 1 in which the engaging member 4 is integrally formed with the signal conductor 2 in a well-managed manufacturing process, the solder connecting portion 22 of the signal conductor 2 and the engaging member 4 are used. The positional accuracy relative to the insertion portion 43 to be inserted into the through hole 15 of the printed wiring board 10 can be increased.
(I) A plurality of solder connection portions 22 of the signal conductor 2 and the corresponding electrodes of the printed wiring board 10 can be obtained simply by inserting the engagement member 4 manufactured with high precision into the through hole 15 of the printed wiring board 10. Positioning with the portion 14A can be performed with high accuracy and ease.
(J) Further, the integration can suppress an increase in the number of components and can simplify the mounting and assembling work.

(変形例1)
図10は、変形例1として、係合部材4及び位置決め部材6の接合方法を示す要部断面図である。プリント配線板10の貫通孔15、16をその内面に金、ニッケル等の金属材料からなる電極部17、18を形成してスルーホールとし、その貫通孔15、16に係合部材4の挿入部43及び位置決め部材6の挿入部61を挿入して接合材の一例としてのはんだ19a、19bで挿入部43、61を貫通孔15、16の電極部17、18に接合してもよい。
(Modification 1)
FIG. 10 is a cross-sectional view of a main part showing a joining method of the engaging member 4 and the positioning member 6 as the first modification. The through holes 15 and 16 of the printed wiring board 10 are formed as through holes by forming electrode portions 17 and 18 made of a metal material such as gold or nickel on the inner surface, and the insertion portions of the engagement member 4 are inserted into the through holes 15 and 16. 43 and the insertion portion 61 of the positioning member 6 may be inserted, and the insertion portions 43 and 61 may be joined to the electrode portions 17 and 18 of the through holes 15 and 16 by solder 19a and 19b as an example of a joining material.

なお、係合部材4の挿入部43と貫通孔15の電極部17との接合、及び位置決め部材6の挿入部61と貫通孔16の電極部18との接合は、信号用導体2のはんだ接続部22と電極部12Aとの接合と同時でもよいし、信号用導体2のはんだ接続部22の接続後に実施してもよい。また、係合部材4の挿入部43と貫通孔15の電極部17との接合、及び位置決め部材6の挿入部61と貫通孔16の電極部18との接合は、はんだのような金属材料による接合以外に、エポキシ、アクリル、ポリイミド等の樹脂材料を主体とした接着剤で接合してもよい。   The joining of the insertion portion 43 of the engaging member 4 and the electrode portion 17 of the through hole 15 and the joining of the insertion portion 61 of the positioning member 6 and the electrode portion 18 of the through hole 16 are performed by soldering the signal conductor 2. It may be performed at the same time as the joining of the portion 22 and the electrode portion 12A, or after the solder connection portion 22 of the signal conductor 2 is connected. Further, the joining between the insertion portion 43 of the engaging member 4 and the electrode portion 17 of the through hole 15 and the joining of the insertion portion 61 of the positioning member 6 and the electrode portion 18 of the through hole 16 are made of a metal material such as solder. In addition to bonding, bonding may be performed using an adhesive mainly composed of a resin material such as epoxy, acrylic, or polyimide.

(変形例2)
図9Dや図9Fでは、フレキシブルフラットケーブル1の片側の端末部1bをプリント配線板10に実装した例を示した。積層された少なくとも2つのプリント配線板間をフレキシブルフラットケーブルで接続する場合は、両方の端末部1bがそれぞれプリント配線板に実装される。その接続状態を図11に示す。
(Modification 2)
In FIG. 9D and FIG. 9F, the example which mounted the terminal part 1b of the one side of the flexible flat cable 1 in the printed wiring board 10 was shown. When connecting at least two laminated printed wiring boards with a flexible flat cable, both terminal portions 1b are respectively mounted on the printed wiring board. The connection state is shown in FIG.

図9Aから図9Dに示した方法によって、フレキシブルフラットケーブル1の一方の端末部1bを第1のプリント配線板10A(図では下側のプリント配線板)に実装する。第1及び第2のプリント配線板10A、10Bを上下(図11ではプリント配線板10Aを下側)に積層配置し、フレキシブルフラットケーブル1を中央部1cで折り曲げ、上側の第2のプリント配線板10Bの表面側から貫通孔15、16に係合部材4の挿入部43及び位置決め部材6の挿入部61を挿入できるようにする。同じく図9Aから図9Dに示した実装方法により、図11に示すようにフレキシブルフラットケーブル1の他方の端末部1bを第2のプリント配線板10Bに実装し、積層されたプリント配線板10A、10B間をフレキシブルフラットケーブル1で接続する。   9A to 9D, one terminal portion 1b of the flexible flat cable 1 is mounted on the first printed wiring board 10A (the lower printed wiring board in the figure). The first and second printed wiring boards 10A and 10B are stacked one above the other (in FIG. 11, the printed wiring board 10A is on the lower side), the flexible flat cable 1 is bent at the center 1c, and the upper second printed wiring board is placed. The insertion portion 43 of the engaging member 4 and the insertion portion 61 of the positioning member 6 can be inserted into the through holes 15 and 16 from the surface side of 10B. Similarly, by the mounting method shown in FIGS. 9A to 9D, the other terminal portion 1b of the flexible flat cable 1 is mounted on the second printed wiring board 10B as shown in FIG. 11, and the stacked printed wiring boards 10A and 10B are stacked. They are connected with a flexible flat cable 1.

図11に示したように積層された第1及び第2のプリント配線板10A、10B間をフレキシブルフラットケーブル1で繋いだプリント配線板実装品を搭載した機器に機械的振動が負荷されると、プリント配線板間を繋いでいるフレキシブルフラットケーブル1自体にも共振現象によって大きな振動変形が発生する場合がある。特に、フレキシブルフラットケーブル1にプリント配線板10Bの板厚方向(図11の上下方向)の振動変形が生じると、この振動変形は信号用導体2の固定端となるはんだ接続部22近傍に集中して作用し、はんだ接続部22のはんだ14A上端部や固定部材5の端部5c近傍の信号用導体2の露出部20などに高い応力を生じさせる。   When mechanical vibration is applied to a device on which a printed wiring board mounted product in which the first and second printed wiring boards 10A and 10B stacked as shown in FIG. 11 are connected by the flexible flat cable 1 is loaded, In some cases, the flexible flat cable 1 itself connecting the printed wiring boards also undergoes large vibration deformation due to a resonance phenomenon. In particular, when vibration deformation in the thickness direction of the printed wiring board 10 </ b> B (vertical direction in FIG. 11) occurs in the flexible flat cable 1, the vibration deformation concentrates in the vicinity of the solder connection portion 22 that becomes the fixed end of the signal conductor 2. High stress is generated in the upper end portion of the solder 14A of the solder connection portion 22, the exposed portion 20 of the signal conductor 2 in the vicinity of the end portion 5c of the fixing member 5, and the like.

本発明よる係合部材4を備えたフレキシブルフラットケーブル1では、フレキシブルフラットケーブル1の被覆部材3の端部近傍に金属板からなる係合部材4と補強用金属板52を配置している。これらの部材は、信号用導体2の被覆部材3の端部やはんだ接続部22近傍の機械的負荷による変形を抑える補強部材となり、振動変形を抑制して高い応力の集中を分散することができる。   In the flexible flat cable 1 provided with the engaging member 4 according to the present invention, the engaging member 4 made of a metal plate and the reinforcing metal plate 52 are disposed in the vicinity of the end of the covering member 3 of the flexible flat cable 1. These members serve as a reinforcing member that suppresses deformation due to a mechanical load near the end of the covering member 3 of the signal conductor 2 and the solder connection portion 22, and can suppress vibration deformation and disperse high stress concentration. .

さらに、本実施の形態では、係合部材4の露出部40に設けたはんだ接続部42を、信号用導体2と同様にプリント配線板10A、10Bの電極部12Bにはんだ接続する。このプリント配線板10A、10Bへの接続によって、フレキシブルフラットケーブル1は係合部材4を介してプリント配線板10A、10Bに強固に固定されるようになる。上記したフレキシブルフラットケーブル1の端末部1bに発生する振動変形は、プリント配線板10A、10Bによる拘束によって著しく減少し、発生応力も低減する。これらによって、振動負荷に対する耐性を向上したフレキシブルフラットケーブル1を提供することができる。   Further, in the present embodiment, the solder connection portion 42 provided on the exposed portion 40 of the engagement member 4 is solder-connected to the electrode portions 12B of the printed wiring boards 10A and 10B in the same manner as the signal conductor 2. By connecting to the printed wiring boards 10A and 10B, the flexible flat cable 1 is firmly fixed to the printed wiring boards 10A and 10B via the engaging member 4. The vibration deformation generated in the terminal portion 1b of the flexible flat cable 1 is remarkably reduced by the restraint by the printed wiring boards 10A and 10B, and the generated stress is also reduced. By these, the flexible flat cable 1 which improved the tolerance with respect to a vibration load can be provided.

(変形例3)
図12は、本実施の形態の変形例3として、フレキシブルフラットケーブル1の位置決め部材6を示す要部平面図である。本実施の形態では、図6等に示すように、位置決め部材6を複数の信号用導体2の両側に設けたが、この変形例3は、位置決め部材6を複数の信号用導体2の一方の側に設けたものである。この場合、プリント配線板10には、位置決め部材6に対応する位置に1つの貫通孔16を形成する。
(Modification 3)
FIG. 12 is a principal plan view showing a positioning member 6 of a flexible flat cable 1 as a third modification of the present embodiment. In the present embodiment, as shown in FIG. 6 and the like, the positioning members 6 are provided on both sides of the plurality of signal conductors 2. However, in the third modification, the positioning member 6 is provided on one of the plurality of signal conductors 2. It is provided on the side. In this case, one through hole 16 is formed in the printed wiring board 10 at a position corresponding to the positioning member 6.

(変形例4)
図13は、本実施の形態の変形例4に係るフレキシブルフラットケーブル1の位置決め部材6を示す要部平面図である。本実施の形態では、図6等に示すように、位置決め部材6を複数の信号用導体2の両側に設けたが、この変形例4は、位置決め部材6を複数の信号用導体2の中央の任意の位置に設けたものである。この場合、プリント配線板10には、位置決め部材6に対応する位置に1つの貫通孔16を形成する。
(Modification 4)
FIG. 13 is a main part plan view showing the positioning member 6 of the flexible flat cable 1 according to Modification 4 of the present embodiment. In the present embodiment, as shown in FIG. 6 and the like, the positioning members 6 are provided on both sides of the plurality of signal conductors 2. However, in the fourth modification, the positioning members 6 are arranged at the center of the plurality of signal conductors 2. It is provided at an arbitrary position. In this case, one through hole 16 is formed in the printed wiring board 10 at a position corresponding to the positioning member 6.

(変形例5)
図14は、本実施の形態の変形例5に係るフレキシブルフラットケーブル1の係合部材4を展開した状態を示す平面図である。図15は、図14に示す係合部材4を折り曲げて、プリント配線板の貫通孔に挿入した状態を示す要部平面図である。
(Modification 5)
FIG. 14 is a plan view showing a state where the engaging member 4 of the flexible flat cable 1 according to the fifth modification of the present embodiment is developed. FIG. 15 is a principal plan view showing a state in which the engaging member 4 shown in FIG. 14 is bent and inserted into the through hole of the printed wiring board.

この変形例5は、係合部材4の挿入部43が、係合部材4の長手方向に平行な中心線46に対して45度傾斜した折り曲げ線47に直交する方向に延びるように形成されている。つまり、係合部材4は、中心線46に対して45度傾斜した折り曲げ線47に沿って挿入部43をプリント配線板10の貫通孔15に挿入するように折り曲げた折曲部41cを有する。このような係合部材4を図15に示すように、プリント配線板10の貫通孔15に挿入することによって、この係合部材4で信号用導体2のはんだ接続部22と対応するプリント配線板10の電極部12Aとの直交する2方向(図15のx方向,y方向)の位置合わせを精度良く実施することができるようになる。なお、折り曲げ線47は、中心線46に対して45度傾いていれば、中心線46から時計周りに45度でも反時計周りに45度でもよく、係合部材4の両端間で同じでも異なっていてもよい。また、折り曲げ線47の傾斜角度は、45度に限られない。   In the fifth modification, the insertion portion 43 of the engaging member 4 is formed so as to extend in a direction perpendicular to a bending line 47 inclined by 45 degrees with respect to a center line 46 parallel to the longitudinal direction of the engaging member 4. Yes. That is, the engagement member 4 has a bent portion 41 c that is bent so that the insertion portion 43 is inserted into the through hole 15 of the printed wiring board 10 along a bending line 47 that is inclined 45 degrees with respect to the center line 46. As shown in FIG. 15, by inserting such an engaging member 4 into the through hole 15 of the printed wiring board 10, the printed wiring board corresponding to the solder connecting portion 22 of the signal conductor 2 by the engaging member 4 is used. Positioning in two orthogonal directions (x direction and y direction in FIG. 15) with 10 electrode portions 12A can be performed with high accuracy. The bend line 47 may be 45 degrees clockwise or 45 degrees counterclockwise from the center line 46 as long as it is inclined 45 degrees with respect to the center line 46, and is the same or different between both ends of the engagement member 4. It may be. Further, the inclination angle of the fold line 47 is not limited to 45 degrees.

なお、本発明は、上記実施の形態及び上記変形例に限定されず、本発明の要旨の範囲内で種々に変形実施が可能である。上記実施の形態では、位置決め部材6の挿入部61が挿入されるプリント配線板10の穴として貫通孔16を形成したが、貫通していない穴でもよい。   In addition, this invention is not limited to the said embodiment and the said modification, A various deformation | transformation implementation is possible within the range of the summary of this invention. In the embodiment described above, the through hole 16 is formed as a hole in the printed wiring board 10 into which the insertion portion 61 of the positioning member 6 is inserted.

本発明は、例えば車載機器、携帯電話、通信機器、情報端末機器、測定機器、家電機器等に適用可能である。   The present invention is applicable to, for example, an in-vehicle device, a mobile phone, a communication device, an information terminal device, a measuring device, a home appliance, and the like.

1…フレキシブルフラットケーブル、1a…ケーブル本体、1b…端末部、1c…中央部、2…信号用導体、3…被覆部材、3a…一方の面、3b…他方の面、4…係合部材、5 固定部材、5a…上面、5b…下面、5c…端部、6…位置決め部材、10…プリント配線板、10A…第1のプリント配線板、10B…第2のプリント配線板、11…絶縁基材、11a…表面、11b…裏面、12A、12B…電極部、13…ソルダレジスト、14A、14B…はんだ、15、16…貫通孔、17、18…電極部、20…露出部、21a、21b…折曲部、22…はんだ接続部、22a…はんだ接続部の下面、30…絶縁フィルム、31…接着剤、40…露出部、41a、41b、41c…折曲部、42…はんだ接続部、42a…はんだ接続部の下面、43…挿入部、43a…スリット、43b…傾斜面、43c…突起部、43d…上端、44…上側部分、45…幅広部、46…中心線、47…折り曲げ線、50…絶縁フィルム、51…接着剤、52…補強用金属板、60…折り曲げ部、61…挿入部、D1、D2…直径、S…ギャップ、W1、W2、W3…幅、 DESCRIPTION OF SYMBOLS 1 ... Flexible flat cable, 1a ... Cable main body, 1b ... Terminal part, 1c ... Central part, 2 ... Signal conductor, 3 ... Cover member, 3a ... One side, 3b ... The other side, 4 ... Engagement member, DESCRIPTION OF SYMBOLS 5 Fixing member, 5a ... Upper surface, 5b ... Lower surface, 5c ... End part, 6 ... Positioning member, 10 ... Printed wiring board, 10A ... 1st printed wiring board, 10B ... 2nd printed wiring board, 11 ... Insulation base Material, 11a ... front surface, 11b ... back surface, 12A, 12B ... electrode part, 13 ... solder resist, 14A, 14B ... solder, 15, 16 ... through-hole, 17, 18 ... electrode part, 20 ... exposed part, 21a, 21b ... bent portion, 22 ... solder connecting portion, 22a ... lower surface of solder connecting portion, 30 ... insulating film, 31 ... adhesive, 40 ... exposed portion, 41a, 41b, 41c ... bent portion, 42 ... solder connecting portion, 42a ... Solder connection 43 ... insert part, 43a ... slit, 43b ... inclined surface, 43c ... projection, 43d ... upper end, 44 ... upper part, 45 ... wide part, 46 ... center line, 47 ... fold line, 50 ... insulating film 51 ... Adhesive, 52 ... Reinforcing metal plate, 60 ... Bending part, 61 ... Insertion part, D1, D2 ... Diameter, S ... Gap, W1, W2, W3 ... Width,

Claims (9)

間隔を設けて幅方向に並列に配置された複数の導体と、
前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材と、
前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、
前記係合部材を前記被覆部材に固定する固定部材と、
前記複数の導体に並列に配置され、先端部に形成された挿入部が前記被実装基板に形成された穴に挿入されて前記複数の導体を位置決めする位置決め部材とを備えたフラット配線材。
A plurality of conductors arranged in parallel in the width direction at intervals;
An insulating covering member that collectively covers the plurality of conductors so that both ends thereof are exposed; and
A through hole in which an insertion portion formed in an end portion extending in the width direction is provided in a position close to at least one of the both end portions where the plurality of conductors on the covering member are exposed. An engaging member inserted into and engaged with,
A fixing member for fixing the engaging member to the covering member;
A flat wiring member provided with a positioning member that is arranged in parallel to the plurality of conductors and that inserts an insertion portion formed at a tip portion into a hole formed in the mounted substrate to position the plurality of conductors.
前記係合部材は、前記導体の長手方向と直交する方向が前記係合部材の長手方向となるように配置された請求項1に記載のフラット配線材。   The flat wiring member according to claim 1, wherein the engagement member is disposed such that a direction orthogonal to a longitudinal direction of the conductor is a longitudinal direction of the engagement member. 前記係合部材及び前記位置決め部材は、金属板から形成され、
前記係合部材及び前記位置決め部材は、それぞれの前記挿入部の幅方向が、互いに交差する方向となるように形成された請求項1又は2に記載のフラット配線材。
The engaging member and the positioning member are formed of a metal plate,
3. The flat wiring member according to claim 1, wherein the engaging member and the positioning member are formed such that the width directions of the respective insertion portions intersect each other.
間隔を設けて幅方向に並列に配置された複数の導体と、
前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材と、
前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、
前記係合部材を前記被覆部材に固定する固定部材とを備え、
前記係合部材の前記挿入部は、前記幅方向に対して所定角度傾斜しているフラット配線材。
A plurality of conductors arranged in parallel in the width direction at intervals;
An insulating covering member that collectively covers the plurality of conductors so that both ends thereof are exposed; and
A through hole in which an insertion portion formed in an end portion extending in the width direction is provided in a position close to at least one of the both end portions where the plurality of conductors on the covering member are exposed. An engaging member inserted into and engaged with,
A fixing member that fixes the engaging member to the covering member;
The insertion member of the engaging member is a flat wiring member that is inclined at a predetermined angle with respect to the width direction.
前記係合部材の前記挿入部は、前記貫通孔に挿入される際に弾性変形可能とする開口部と、前記貫通孔に挿入された後、挿入方向と反対方向への抜けを防止する突起部とを有する請求項1乃至4のいずれか1項に記載のフラット配線材。   The insertion portion of the engagement member includes an opening that can be elastically deformed when inserted into the through hole, and a protrusion that prevents the insertion member from slipping in the direction opposite to the insertion direction after being inserted into the through hole. The flat wiring material according to claim 1, comprising: 間隔を設けて幅方向に並列に配置された複数の導体と、前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材と、前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、前記係合部材を前記被覆部材に固定する固定部材と、前記複数の導体に並列に配置され、先端部に形成された挿入部が前記被実装基板に形成された穴に挿入されて前記複数の導体を位置決めする位置決め部材とを備えたフラット配線材と、
前記フラット配線材の前記係合部材の前記挿入部が挿入される前記貫通孔と、前記位置決め部材の前記挿入部が挿入される前記穴と、前記複数の導体とはんだ接続される電極部とを有する被実装基板と、
を備えた実装体。
A plurality of conductors arranged in parallel in the width direction with an interval; an insulating covering member that collectively covers the plurality of conductors so that both ends thereof are exposed; and the plurality of conductors on the covering member The insertion portion formed at the end extending in the width direction is inserted into the through hole formed in the mounted substrate and is engaged with the at least one end of the both ends where the conductor is exposed. A joint member, a fixing member that fixes the engaging member to the covering member, and an insertion portion that is disposed in parallel with the plurality of conductors and that is formed at the tip portion is inserted into a hole formed in the mounted substrate. A flat wiring member provided with a positioning member for positioning the plurality of conductors;
The through hole into which the insertion portion of the engaging member of the flat wiring member is inserted, the hole into which the insertion portion of the positioning member is inserted, and an electrode portion to be solder-connected to the plurality of conductors A mounted substrate having,
An implementation with
前記被実装基板は、前記フラット配線材が実装される側の面に、前記複数の導体とはんだ接続される第1の電極部、及び前記係合部材とはんだ接続される第2の電極部を備え、
前記フラット配線材の前記複数の導体は、前記被実装基板の前記第1の電極部にはんだ接続される第1の接続部を備え、
前記係合部材は、前記被実装基板の前記第2の電極部にはんだ接続される第2の接続部を備え、
前記係合部材の前記挿入部、及び前記位置決め部材の前記挿入部は、前記第1及び第2の電極部と前記第1及び第2の接続部とをそれぞれはんだ接続する際、前記フラット配線材の挿入方向への変位を許容する形状を有する請求項6に記載の実装体。
The mounting substrate includes a first electrode portion solder-connected to the plurality of conductors and a second electrode portion solder-connected to the engagement member on a surface on which the flat wiring member is mounted. Prepared,
The plurality of conductors of the flat wiring member includes a first connection portion solder-connected to the first electrode portion of the mounted substrate,
The engagement member includes a second connection portion that is solder-connected to the second electrode portion of the mounted substrate,
The insertion portion of the engaging member and the insertion portion of the positioning member are formed by connecting the first and second electrode portions and the first and second connection portions with the flat wiring member, respectively. The mounting body according to claim 6, which has a shape that allows displacement in the insertion direction.
前記フラット配線材の前記係合部材は、前記被覆部材上の前記複数の導体が露出する前記両端部のそれぞれに近接した位置に設けられた一対の係合部材であり、
前記フラット配線材の前記位置決め部材の前記挿入部は、前記両先端部のそれぞれに形成された一対の挿入部であり、
前記被実装基板は、前記フラット配線材の前記複数の導体が露出する前記両端部のそれぞれにはんだ接続され、前記一対の係合部材の前記挿入部がそれぞれ前記貫通孔に挿入され、前記位置決め部材の前記一対の挿入部がそれぞれ前記穴に挿入される第1及び第2の被実装基板である請求項6又は7に記載の実装体。
The engagement member of the flat wiring member is a pair of engagement members provided at positions close to each of the both ends where the plurality of conductors on the covering member are exposed,
The insertion portion of the positioning member of the flat wiring member is a pair of insertion portions formed on each of the two end portions,
The mounting substrate is solder-connected to each of the both end portions where the plurality of conductors of the flat wiring member are exposed, and the insertion portions of the pair of engaging members are respectively inserted into the through holes, and the positioning member The mounting body according to claim 6 or 7, wherein the pair of insertion portions are first and second mounted substrates respectively inserted into the holes.
間隔を設けて幅方向に並列に配置された複数の導体と、前記複数の導体をそれらの両端部が露出するように一括して被覆する絶縁性の被覆部材と、前記被覆部材上の前記複数の導体が露出する前記両端部の少なくとも一方に近接した位置に設けられ、前記幅方向に延伸した端部に形成された挿入部が被実装基板に形成された貫通孔に挿入されて係り合う係合部材と、前記係合部材を前記被覆部材に固定する固定部材とを備え、前記係合部材の前記挿入部は、前記幅方向に対して所定角度傾斜しているフラット配線材と、
前記フラット配線材の前記係合部材の前記挿入部が挿入される前記貫通孔と、前記複数の導体とはんだ接続される電極部とを有する被実装基板と、
を備えた実装体。
A plurality of conductors arranged in parallel in the width direction with an interval; an insulating covering member that collectively covers the plurality of conductors so that both ends thereof are exposed; and the plurality of conductors on the covering member The insertion portion formed at the end extending in the width direction is inserted into the through hole formed in the mounted substrate and is engaged with the at least one end of the both ends where the conductor is exposed. A flat member that includes a joint member and a fixing member that fixes the engaging member to the covering member, and the insertion portion of the engaging member is inclined at a predetermined angle with respect to the width direction;
A mounting substrate having the through-hole into which the insertion portion of the engaging member of the flat wiring member is inserted, and an electrode portion solder-connected to the plurality of conductors;
An implementation with
JP2012065885A 2012-03-22 2012-03-22 Flat wiring material, and mounting body using the same Pending JP2013197040A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016001661A (en) * 2014-06-11 2016-01-07 カルソニックカンセイ株式会社 Manufacturing method of circuit board having fixing part of housing, and circuit board having fixing part of housing
US9877391B2 (en) 2015-10-05 2018-01-23 Kabushiki Kaisha Toshiba Electronic module comprising flexible conducting member connected thereto and method of connecting flexible conducting member to electronic module

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016001661A (en) * 2014-06-11 2016-01-07 カルソニックカンセイ株式会社 Manufacturing method of circuit board having fixing part of housing, and circuit board having fixing part of housing
US9877391B2 (en) 2015-10-05 2018-01-23 Kabushiki Kaisha Toshiba Electronic module comprising flexible conducting member connected thereto and method of connecting flexible conducting member to electronic module

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