JP2012124265A - Wiring board for connection - Google Patents

Wiring board for connection Download PDF

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Publication number
JP2012124265A
JP2012124265A JP2010272654A JP2010272654A JP2012124265A JP 2012124265 A JP2012124265 A JP 2012124265A JP 2010272654 A JP2010272654 A JP 2010272654A JP 2010272654 A JP2010272654 A JP 2010272654A JP 2012124265 A JP2012124265 A JP 2012124265A
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wiring board
plate end
connection
bent portion
connectors
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JP5484299B2 (en
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Kenkichi Kashima
健吉 加島
Futoshi Okawa
太 大川
Tomoyuki Kamiyama
知之 神山
Yasumichi Okita
泰道 大北
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To achieve a wiring board for connection electrically connecting a plurality of printed wiring boards, which costs less, and does not need time and effort for assembly operation, and does not cause poor connection by mitigating force applied to connectors.SOLUTION: The wiring board for connection 100 includes a plurality of connectors 150 for respectively establishing electrical connection with electric circuits 501 of a plurality of circuit boards 500; conductive wires for electrically connecting the plurality of connectors 150; and a flat wiring board 170 having the plurality of connectors 150 and the conductive wires arranged therein. The wiring board 170 includes a plurality of plate end parts 110 and a bent part 120 that is bent and connects the plurality of plate end parts 110 to each other. The plurality of connectors 150 are respectively arranged in the plurality of plate end parts 110. The conductive wires are arranged in the bent part 120. The bent part 120 mitigates stress between the circuit boards 500, thereby mitigating the force applied to the connectors. This eliminates poor connection and disconnection of a wiring pattern due to the stress.

Description

この発明は、電気回路が形成された複数の回路基板を電気的に接続する接続用配線板に関する。   The present invention relates to a connection wiring board for electrically connecting a plurality of circuit boards on which electric circuits are formed.

例えば、電子機器などの筺体内において、間隔を置いて設置された電気回路が形成された複数の回路基板（以下、電気回路が形成された複数の回路基板を「プリント配線板」とも称する）の間を電気的に接続する場合は、ＦＦＣ（フレキシブルフラットケーブル、Ｆｌｅｘｉｂｌｅ Ｆｌａｔ Ｃａｂｌｅ）やＦＰＣ（フレキシブルプリント基板、Ｆｌｅｘｉｂｌｅ Ｐｒｉｎｔｅｄ Ｃｉｒｃｕｉｔｓ）、ワイヤ・ハーネスが一般的に使用されている。（例えば、特許文献１参照）。   For example, in a housing of an electronic device or the like, a plurality of circuit boards (hereinafter, referred to as “printed wiring boards”) on which electric circuits are formed at intervals are formed. In the case of electrical connection between them, FFC (Flexible Flat Cable), FPC (Flexible Printed Circuit, Flexible Printed Circuits), and wire harness are generally used. (For example, refer to Patent Document 1).

ＦＦＣやＦＰＣを用いて、複数のプリント配線板間を電気的に接続する場合、ＦＦＣやＦＰＣが高価である。また、ＦＦＣやＦＰＣをプリント配線板に設置されたＦＦＣやＦＰＣの取り付け部（例えばＦＦＣ用コネクタやＦＰＣ用コネクタ）に挿入する際には、作業者は、作業が困難な為、取扱いに神経を使うこととなり作業者への負荷が増大し生産性、作業性が悪くなる。すなわち、ＦＦＣやＦＰＣは、電極間の間隔が狭く（配線部が狭ピッチ）、挿入角度によって導通不良が発生する場合があり、組立作業時の挿入ミスが発生する。また、ＦＦＣやＦＰＣは、電極コンタクト部へ微小な埃等の付着による導通不良が発生する場合もある。更に、ＦＦＣやＦＰＣは、ハーネス部がたわんだりする為、挿入が困難となり、作業ミスの発生を引き起こす。
また、ワイヤ・ハーネスを用いた場合は、コネクタに直接力が加わらないようハーネス部を引き回すため、収納作業が別途必要になることがあり、作業者は、作業に手間を要することがある。 When electrically connecting a plurality of printed wiring boards using FFC or FPC, FFC or FPC is expensive. Also, when inserting an FFC or FPC into an FFC or FPC mounting portion (for example, an FFC connector or an FPC connector) installed on a printed wiring board, the operator is difficult to handle, so the handling is difficult. This increases the load on the worker, resulting in poor productivity and workability. That is, in the FFC and FPC, the interval between the electrodes is narrow (the wiring portion is narrow pitch), and conduction failure may occur depending on the insertion angle, and an insertion error occurs during assembly work. In addition, in FFC and FPC, a conduction failure may occur due to adhesion of minute dust or the like to the electrode contact portion. Furthermore, since the harness part bends, FFC and FPC will become difficult to insert and cause work errors.
Further, when a wire harness is used, the harness portion is routed so that no force is directly applied to the connector, so that a separate storage operation may be required, and the operator may need time and effort.

また、コネクタを実装させた接続用配線板を用いて、接続用配線板のコネクタと複数のプリント配線板に設置されたコネクタとをはめ合せる事により接続する構造は、安価な接続構造である。しかし、接続用配線板を用いて接続する場合、接続されるプリント配線板間の位置ずれや基板の歪みが発生すると、残留応力や熱応力によるひずみが、コネクタ実装のはんだ接合部に加わる。そして、コネクタ実装のはんだ接合部は接続不良や配線パターンの断線を起こすことがある。
そして、コネクタやその他電子部品に加わる力を緩和させるためにプリント配線板にスリットを設ける手法がある（例えば、特許文献２参照）。しかしながら、この手法は、例えば、プリント配線板に平行なスリットが設けられ、この平行なスリットと同じ方向へ位置ずれや応力が発生した場合、コネクタに加わる力の緩和が難しい。 Moreover, the structure which connects by connecting the connector of the wiring board for connection and the connector installed in the some printed wiring board using the wiring board for connection which mounted the connector is an inexpensive connection structure. However, when the connection wiring board is used for connection, if a displacement between the printed wiring boards to be connected or distortion of the board occurs, distortion due to residual stress or thermal stress is applied to the solder joint of the connector mounting. And the solder joint part of a connector mounting may raise | generate a connection failure and a disconnection of a wiring pattern.
And there exists a method of providing a slit in a printed wiring board in order to relieve the force applied to a connector and other electronic parts (for example, refer to patent documents 2). However, in this method, for example, when a parallel slit is provided in the printed wiring board and a positional shift or stress occurs in the same direction as the parallel slit, it is difficult to reduce the force applied to the connector.

特開２００７−１３４３５７号公報JP 2007-134357 A 特開２００３−２３４５４７号公報JP 2003-234547 A

この発明の実施の形態は、低コストでかつ組立作業に手間のかからず、コネクタに加わる力を緩和させ接続不良を起こさず、複数のプリント配線板間を電気的に接続する接続用配線板を実現することを目的とする。   The embodiment of the present invention provides a wiring board for connection that electrically connects a plurality of printed wiring boards at low cost and does not require time and effort for assembling, relaxes the force applied to the connector, and does not cause poor connection. It aims to be realized.

この発明に係る接続用配線板は、
電気回路が形成された複数の回路基板を電気的に接続する接続用配線板において、
前記複数の回路基板の電気回路とそれぞれ電気的に接続する複数のコネクタと、
前記複数のコネクタを電気的に接続する導電線と、
前記複数のコネクタと前記導電線とを配置した１枚の平らな配線板と
を備え、
前記配線板は、複数の板端部と前記複数の板端部をつなぐ曲折した曲折部とを有し、前記複数の板端部に前記複数のコネクタをそれぞれ配置し、前記曲折部に前記導電線を配置したことを特徴とする。 The wiring board for connection according to the present invention is
In the connection wiring board for electrically connecting a plurality of circuit boards on which an electric circuit is formed,
A plurality of connectors electrically connected to electrical circuits of the plurality of circuit boards, respectively;
Conductive wires for electrically connecting the plurality of connectors;
A flat wiring board on which the plurality of connectors and the conductive wires are arranged;
The wiring board has a plurality of plate end portions and a bent portion connecting the plurality of plate end portions, and the plurality of connectors are arranged at the plurality of plate end portions, respectively, and the conductive portions are connected to the bent portions. It is characterized by arranging lines.

この発明に係る接続用配線板は、低コストでかつ組立作業に手間のかからず、コネクタに加わる力を緩和させ接続不良を起こさず、複数のプリント配線板間を電気的に接続することが可能となる。   The connection wiring board according to the present invention is low in cost and does not require time for assembly work, and can relieve the force applied to the connector and cause no connection failure, and can electrically connect a plurality of printed wiring boards. It becomes.

実施の形態１を示す図で、接続用配線板１００による回路基板５００間の電気接続構造を示す斜視図。FIG. 3 shows the first embodiment, and is a perspective view showing an electrical connection structure between circuit boards 500 using a connection wiring board 100. 実施の形態１を示す図で、コネクタ１５０と回路基板コネクタ１６０とを示す斜視図。FIG. 3 is a diagram showing the first embodiment, and is a perspective view showing a connector 150 and a circuit board connector 160. 実施の形態１を示す図で、接続用配線板１００の導電線１４０を示す上面図。FIG. 3 shows the first embodiment and is a top view showing conductive wires 140 of connection wiring board 100. 実施の形態１を示す図で、板端部１１０と曲折部１２０との定義を示した図。FIG. 5 shows the first embodiment, and shows the definition of a plate end portion 110 and a bent portion 120. 実施の形態１を示す図で、接続用配線板１００による回路基板５００間の電気接続構造を概略的に示した上面図。FIG. 4 is a diagram showing the first embodiment, and is a top view schematically showing an electrical connection structure between circuit boards 500 using a connection wiring board 100. FIG. 実施の形態１を示す図で、接続用配線板１００による回路基板５００間の電気接続構造を概略的に示した断面図。FIG. 3 is a diagram showing the first embodiment, and is a cross-sectional view schematically showing an electrical connection structure between circuit boards 500 using a connection wiring board 100. 実施の形態２を示す図で、四角い渦巻き状の形状をした曲折部１２０の第１の例を示す図。FIG. 5 shows the second embodiment, and shows a first example of a bent portion 120 having a square spiral shape. 実施の形態２を示す図で、四角い渦巻き状の形状をした曲折部１２０の第２の例を示す図。The figure which shows Embodiment 2 and is a figure which shows the 2nd example of the bending part 120 which carried out the square spiral shape. 実施の形態２を示す図で、ミアンダ状の形状をした曲折部１２０の例を示す図。The figure which shows Embodiment 2 and is a figure which shows the example of the bending part 120 which made the meander-shaped shape. 実施の形態２を示す図で、曲線状の形状をした曲折部１２０の例を示す図。The figure which shows Embodiment 2 and is a figure which shows the example of the bending part 120 which made the curve shape. 実施の形態３を示す図で、板端部１１０が３つ有る接続用配線板１００の例を示す図。FIG. 5 shows the third embodiment, and shows an example of a connection wiring board 100 having three plate end portions 110.

実施の形態１．
最初に、図１、図２、図３、図４、図５、図６を用いて実施の形態１における接続用配線板１００の説明を行う。
図１は、接続用配線板１００による回路基板５００間の電気接続構造を示す斜視図である。
図２は、コネクタ１５０と回路基板コネクタ１６０とを示す斜視図である。
図３は、接続用配線板１００の導電線１４０を示す上面図である。
図４は、板端部１１０と曲折部１２０との定義を示した図である。
図５は、接続用配線板１００による回路基板５００間の電気接続構造を概略的に示した上面図である。
図６は、接続用配線板１００による回路基板５００間の電気接続構造を概略的に示した断面図である。（図６は、図５に図示したＡ−Ａ間における断面図である）。 Embodiment 1 FIG.
First, the connection wiring board 100 according to the first embodiment will be described with reference to FIGS. 1, 2, 3, 4, 5, and 6.
FIG. 1 is a perspective view showing an electrical connection structure between circuit boards 500 using a connection wiring board 100.
FIG. 2 is a perspective view showing the connector 150 and the circuit board connector 160.
FIG. 3 is a top view showing the conductive wire 140 of the connection wiring board 100.
FIG. 4 is a diagram showing the definitions of the plate end portion 110 and the bent portion 120.
FIG. 5 is a top view schematically showing an electrical connection structure between the circuit boards 500 by the connection wiring board 100.
FIG. 6 is a cross-sectional view schematically showing an electrical connection structure between the circuit boards 500 by the connection wiring board 100. (FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5).

図１〜図６に示すように、接続用配線板１００は、電気回路５０１が形成された複数の回路基板５００間を電気的に接続するものである。
接続用配線板１００を構成する配線板１７０の材料は、例えばガラスエポキシ樹脂などからなる。
第１の回路基板５００ａと第２の回路基板５００ｂとは、基板取付板５０２に例えばねじ止めなどで、取り付けられている。
そして、第１の回路基板５００ａには第１の電気回路５０１ａが形成されており、第２の回路基板５００ｂには第２の電気回路５０１ｂが形成されている。さらに、第１の電気回路５０１ａに、第１の回路基板コネクタ１６０ａが電気的に接続され、第２の電気回路５０１ｂに、第２の回路基板コネクタ１６０ｂが電気的に接続されている。ここで、回路基板コネクタ１６０と電気回路５０１との電気的接続は、例えば、はんだ付けなどで行われ、同時に回路基板コネクタ１６０と電気回路５０１とは物理的にも固定される。
接続用配線板１００は、１枚の配線板１７０から成り、配線板１７０の端部に板端部１１０ａと１１０ｂとを備える。
そして、同じ１枚の配線板１７０から成る、曲折した曲折部１２０が板端部１１０ａと１１０ｂとを接続している。言い換えれば、曲折部１２０は、複数の板端部間を結ぶ最短距離を迂回して配置されている。
図４に、板端部１１０と曲折部１２０とを明示する。板端部１１０は、図４における黒部であり、曲折部１２０は、図４における白部である。そして、板端部間を結ぶ最短距離とは、図中の一点鎖線矢印の距離である。また、板端部１１０と曲折部１２０との接続箇所とは、板端部１１０と曲折部１２０とが互いに接している境界のことである。
図示（例えば図４）において、曲折部１２０の曲折の角度は９０度となっている。しかし、曲折部１２０の曲折の角度は９０度に限定されるものでは無い。
曲折部１２０と板端部１１０ａとの接続箇所（例えば図４に示す板端部と曲折部との接続箇所ａ）は、曲折部１２０と板端部１１０ｂとの接続箇所（例えば図４に示す板端部と曲折部との接続箇所ｂ）に対してなるべく離れた場所に位置しており、曲折部１２０は、複数の板端部間を結ぶ最短距離を迂回して配置されることになる。この結果、曲折部１２０の長さを長くすることが可能となる。
例えば、図１の例では、曲折部１２０は、Ｌ字型の形状が組み合わさった形状である。そして、曲折部１２０と板端部１１０ａとの接続箇所は、板端部１１０ａの板端部１１０ｂに対して反対側の角（例えば図４の角ａ）であり、曲折部１２０と板端部１１０ｂとの接続箇所は、板端部１１０ｂの板端部１１０ａに対して反対側の角（例えば図４の角ｂ）である。すなわち、曲折部１２０は、板端部１１０ａと板端部１１０ｂとの直線距離が一番長くなる角同士を接続している。
そして、曲折部１２０は、板端部１１０ａと板端部１１０ｂとの長辺よりも長い直線部分を２つ以上有している。（例えば図４中に点線矢印で説明の部分）。 As shown in FIG. 1 to FIG. 6, the connection wiring board 100 electrically connects a plurality of circuit boards 500 on which the electric circuit 501 is formed.
The material of the wiring board 170 constituting the connection wiring board 100 is made of, for example, glass epoxy resin.
The first circuit board 500a and the second circuit board 500b are attached to the board mounting plate 502 by, for example, screwing.
A first electric circuit 501a is formed on the first circuit board 500a, and a second electric circuit 501b is formed on the second circuit board 500b. Further, the first circuit board connector 160a is electrically connected to the first electric circuit 501a, and the second circuit board connector 160b is electrically connected to the second electric circuit 501b. Here, the electrical connection between the circuit board connector 160 and the electric circuit 501 is performed by, for example, soldering, and at the same time, the circuit board connector 160 and the electric circuit 501 are physically fixed.
The connection wiring board 100 includes a single wiring board 170 and includes end portions 110 a and 110 b at the ends of the wiring board 170.
A bent portion 120 formed of the same single wiring board 170 connects the plate end portions 110a and 110b. In other words, the bent portion 120 is arranged around the shortest distance connecting the plurality of plate end portions.
In FIG. 4, the plate end portion 110 and the bent portion 120 are clearly shown. The plate end portion 110 is a black portion in FIG. 4, and the bent portion 120 is a white portion in FIG. 4. And the shortest distance which connects between board edge parts is the distance of the dashed-dotted line arrow in a figure. Further, the connection portion between the plate end portion 110 and the bent portion 120 is a boundary where the plate end portion 110 and the bent portion 120 are in contact with each other.
In the illustration (for example, FIG. 4), the bending angle of the bent portion 120 is 90 degrees. However, the bend angle of the bend portion 120 is not limited to 90 degrees.
A connection location between the bent portion 120 and the plate end portion 110a (eg, a connection location a between the plate end portion and the bent portion shown in FIG. 4) is a connection location between the bent portion 120 and the plate end portion 110b (eg, as shown in FIG. 4). The bent portion 120 is located as far as possible with respect to the connecting portion b) between the plate end and the bent portion, and the bent portion 120 is arranged around the shortest distance connecting the plurality of plate end portions. . As a result, the length of the bent portion 120 can be increased.
For example, in the example of FIG. 1, the bent portion 120 has a shape in which L-shaped shapes are combined. And the connection location of the bending part 120 and the board edge part 110a is an angle | corner (for example, corner a of FIG. 4) on the opposite side with respect to the board edge part 110b of the board edge part 110a, and the bending part 120 and a board edge part. 110b is a corner of the plate end 110b opposite to the plate end 110a (for example, a corner b in FIG. 4). That is, the bent portion 120 connects the corners where the linear distance between the plate end portion 110a and the plate end portion 110b is the longest.
And the bending part 120 has two or more linear parts longer than the long side of the board edge part 110a and the board edge part 110b. (For example, a portion described by a dotted arrow in FIG. 4).

板端部１１０ａと１１０ｂとは、電極パターン１３０を備える。そして、図３に示すように板端部１１０ａと１１０ｂとに備えられた電極パターン１３０同士は、導電線１４０にて電気的に接続されている。（図を見やすくする為に、図３以外は、導電線１４０の図示を省略する）。
ここで、電極パターン１３０と導電線１４０とは、例えば銅などの金属から成り、配線板１７０上に例えばめっき処理などで形成される。また、配線板１７０は片面配線基板であっても、両面配線基板であっても良く、電極パターン１３０と導電線１４０とは、例えばスルーホールなどを介して配線板１７０の両面に形成が可能である。
そして、第１のコネクタ１５０ａは、板端部１１０ａに形成された電極パターン１３０に電気的に接続され、第２のコネクタ１５０ｂは、板端部１１０ｂに形成された電極パターン１３０に電気的に接続される。ここで、コネクタ１５０と電極パターン１３０との電気的接続は、例えば、はんだ付けなどで行われ、同時にコネクタ１５０と電極パターン１３０とは物理的にも固定される。
図３、図５に示す上面図においては、配線板１７０の上面に電極パターン１３０と導電線１４０が形成され、配線板１７０の下面にコネクタ１５０が配置され、電極パターン１３０はスルーホールで、配線板１７０の上面と下面とを電気的に接続している。 The plate end portions 110 a and 110 b include an electrode pattern 130. As shown in FIG. 3, the electrode patterns 130 provided at the plate end portions 110 a and 110 b are electrically connected to each other through a conductive wire 140. (In order to make the drawing easier to see, the conductive lines 140 are not shown except in FIG. 3).
Here, the electrode pattern 130 and the conductive wire 140 are made of a metal such as copper, and are formed on the wiring board 170 by, for example, plating. Further, the wiring board 170 may be a single-sided wiring board or a double-sided wiring board, and the electrode pattern 130 and the conductive wire 140 can be formed on both sides of the wiring board 170 through, for example, through holes. is there.
The first connector 150a is electrically connected to the electrode pattern 130 formed on the plate end portion 110a, and the second connector 150b is electrically connected to the electrode pattern 130 formed on the plate end portion 110b. Is done. Here, the electrical connection between the connector 150 and the electrode pattern 130 is performed by soldering, for example, and at the same time, the connector 150 and the electrode pattern 130 are also physically fixed.
3 and 5, the electrode pattern 130 and the conductive wire 140 are formed on the upper surface of the wiring board 170, the connector 150 is disposed on the lower surface of the wiring board 170, and the electrode pattern 130 is a through hole. The upper surface and the lower surface of the plate 170 are electrically connected.

図２に示すように、例えばコネクタ１５０には導電性のピンが形成され、このピンは、電極パターン１３０と電気的に接続されている。また、例えば、回路基板コネクタ１６０には、導電性の穴が形成され、この導電性の穴は、電気回路５０１と電気的に接続されている。そして、ピンと穴とは互いに嵌め合せることが出来、ピンと穴とも電気的に接続される。すなわち、コネクタ１５０は、電気回路５０１と電気的に接続される。
よって、電気回路５０１ａは、回路基板コネクタ１６０ａとコネクタ１５０ａと板端部１１０ａに形成された電極パターン１３０とを介して、導電線１４０に電気的に接続され、更に、板端部１１０ｂに形成された電極パターン１３０とコネクタ１５０ｂと回路基板コネクタ１６０ｂとを介して、電気回路５０１ｂに電気的に接続される。
図５は、接続用配線板１００で回路基板５００ａと回路基板５００ｂとが接続されていることを示す。そして、図５におけるＡ−Ａ間の断面を表したものが図６である。コネクタ１５０ａは回路基板コネクタ１６０ａと、コネクタ１５０ｂは回路基板コネクタ１６０ｂと嵌め合さっている。
本実施の形態により、接続用配線板１００の曲折部１２０が曲折していることにより、曲折部１２０が変形し、接続用配線板１００が接続される回路基板５００間の位置ずれによる残留応力や、熱応力によるひずみを曲折部１２０が吸収緩和させることが可能となる。また、あらゆる方向に回路基板５００間の位置ずれが生じた場合でも、接続用配線板１００は、コネクタ１５０と回路基板コネクタ１６０とに加わる力を緩和させながら、回路基板５００間を電気的に接続することが出来る。そして、コネクタ１５０と電極パターン１３０とのはんだ接合部もしくは、回路基板コネクタ１６０と電気回路５０１とのはんだ接合部は、応力に起因した接続不良や配線パターンの断線を起こさなくなる。
そして、図４により明らかなように、曲折部１２０は、板端部１１０ａと板端部１１０ｂとの接続箇所（図４に示す板端部と曲折部との接続箇所ｂ）の方が、接続箇所以外（例えば図４に示す実線矢印部分）より幅が広く（断面積が広く）なっている。このように曲折部１２０の板端部１１０ａと板端部１１０ｂとの接続箇所の幅を広くすることで、応力の一番加わる曲折部１２０の板端部１１０ａと板端部１１０ｂとの接続箇所の強度を向上することが可能である。
また、板端部１１０の１辺と曲折部１２０の１辺とが一致している。（板端部１１０の１辺の延長線上に曲折部１２０の１辺が形成されている。図３参照）。言い換えれば、曲折部１２０は板端部１１０の外周の１辺の途中には接続していない。このような形状によっても、曲折部１２０の板端部１１０ａと板端部１１０ｂとの接続箇所の強度を向上することが可能である。
さらに、曲折部１２０は、板端部１１０ａと板端部１１０ｂとの長辺よりも長い直線部分を２つ以上有していることで、より応力を緩和しやすくなる。
また、コネクタ１５０が実装された接続用配線板１００を用いて、コネクタ１５０と回路基板コネクタ１６０との嵌合により複数の回路基板５００間を電気的に接続することは、ＦＦＣやＦＰＣ、ワイヤ・ハーネスを用いて接続する場合に比べて、低コストでかつ、接続不良を起さない。また、回路基板５００間の接続に関して、コネクタどうしの嵌合により接続されることは、作業性が良くなり、生産性が向上する。（例えば、ワイヤ・ハーネスを用いた場合に比べて、ハーネス部をまとめる作業や、引き回したハーネス部の収納作業が無くなるので、組立作業に手間がかからない）。
そして、接続用配線板１００は、パターンが形成された配線板１７０とコネクタ１５０とだけを用いており、更にコネクタ１５０は、例えば、はんだ付けで配線板１７０（電極パターン１３０）に接続される。その為、接続用配線板１００は、大量生産することも可能となり、ＦＦＣやＦＰＣ、ワイヤ・ハーネスを用いた場合より、低コストとなる。
接続用配線板１００へ実装されているコネクタ１５０の電極パターン１３０の配列は、周辺部品の設計制約に応じて自由に設計できる。本実施の形態の例では、コネクタ１５０は、多電極で自動実装機にも対応でき、また、コネクタ１５０の電極パターン１３０の配列が２列以上あるものを用いている。
接続用配線板１００は、フレキシブルに撓むのではなく、堅い（リジッドな）配線板１７０であるため、コネクタの挿入間隔が必然と決定し、コネクタの挿入箇所が明確となり接続作業の効率化を図ることが出来る。
また、図１〜６に示す曲折部１２０は、１つ以上の角を備えた曲折した形状を有すると言える。曲折部１２０は、１つ以上の角を備えることが、回路基板５００間の応力緩和には望ましい。そして具体的には、図１〜６に示す曲折部１２０は、３つの角を備えている（図３に（１）〜（３）で図示）。このように３つ以上の角を備えることが、回路基板５００間の応力緩和には更に望ましい。
ただし、曲折部１２０の角が多くなるほど、応力の緩和の効果は期待されるが、曲折部１２０の形状によっては、接続用配線板１００全体の面積が大きくなってしまう為に、必要以上に曲折部１２０を長くしないことも考慮しなくてはならない。 As shown in FIG. 2, for example, conductive pins are formed on the connector 150, and these pins are electrically connected to the electrode pattern 130. Further, for example, a conductive hole is formed in the circuit board connector 160, and the conductive hole is electrically connected to the electric circuit 501. And a pin and a hole can be mutually fitted and a pin and a hole are also electrically connected. That is, the connector 150 is electrically connected to the electric circuit 501.
Therefore, the electric circuit 501a is electrically connected to the conductive wire 140 via the circuit board connector 160a, the connector 150a, and the electrode pattern 130 formed on the plate end portion 110a, and further formed on the plate end portion 110b. The electrode circuit 130, the connector 150b, and the circuit board connector 160b are electrically connected to the electric circuit 501b.
FIG. 5 shows that the circuit board 500 a and the circuit board 500 b are connected by the connection wiring board 100. FIG. 6 shows a cross section between AA in FIG. The connector 150a is fitted with the circuit board connector 160a, and the connector 150b is fitted with the circuit board connector 160b.
According to the present embodiment, since the bent portion 120 of the connection wiring board 100 is bent, the bent portion 120 is deformed, and the residual stress due to the positional shift between the circuit boards 500 to which the connection wiring board 100 is connected The bent portion 120 can absorb and relieve strain due to thermal stress. Further, even when a positional shift between the circuit boards 500 occurs in any direction, the connection wiring board 100 electrically connects the circuit boards 500 while reducing the force applied to the connector 150 and the circuit board connector 160. I can do it. The solder joint between the connector 150 and the electrode pattern 130 or the solder joint between the circuit board connector 160 and the electric circuit 501 does not cause connection failure or wiring pattern disconnection due to stress.
As is clear from FIG. 4, the bent portion 120 is connected at the connection portion between the plate end portion 110 a and the plate end portion 110 b (the connection portion b between the plate end portion and the bent portion shown in FIG. 4). The width is wider (cross-sectional area is wider) than other places (for example, the solid line arrow portion shown in FIG. 4). In this way, the connection portion between the plate end portion 110a and the plate end portion 110b of the bent portion 120 to which stress is applied most is increased by increasing the width of the connection portion between the plate end portion 110a and the plate end portion 110b of the bent portion 120. It is possible to improve the strength.
Further, one side of the plate end portion 110 and one side of the bent portion 120 coincide with each other. (One side of the bent portion 120 is formed on an extension line of one side of the plate end portion 110. See FIG. 3). In other words, the bent portion 120 is not connected in the middle of one side of the outer periphery of the plate end portion 110. Even with such a shape, it is possible to improve the strength of the connection portion between the plate end portion 110a and the plate end portion 110b of the bent portion 120.
Further, the bent portion 120 has two or more straight portions longer than the long sides of the plate end portion 110a and the plate end portion 110b, so that it becomes easier to relieve stress.
Further, using the connection wiring board 100 on which the connector 150 is mounted, the electrical connection between the plurality of circuit boards 500 by the fitting of the connector 150 and the circuit board connector 160 is performed by FFC, FPC, Compared to the case of connecting using a harness, the cost is low and connection failure does not occur. Further, regarding the connection between the circuit boards 500, the connection by fitting the connectors together improves the workability and improves the productivity. (For example, as compared with the case where a wire harness is used, the work of gathering the harness part and the storing work of the routed harness part are eliminated, so that the assembling work is not time-consuming).
The connection wiring board 100 uses only the wiring board 170 on which the pattern is formed and the connector 150, and the connector 150 is connected to the wiring board 170 (electrode pattern 130) by soldering, for example. Therefore, the connection wiring board 100 can be mass-produced, and the cost is lower than when FFC, FPC, or wire harness is used.
The arrangement of the electrode patterns 130 of the connector 150 mounted on the connection wiring board 100 can be freely designed according to the design constraints of peripheral components. In the example of the present embodiment, the connector 150 is multi-electrode and can be used for an automatic mounting machine, and the connector 150 has an electrode pattern 130 arranged in two or more rows.
Since the wiring board 100 for connection is not a flexible flexure but is a rigid (rigid) wiring board 170, the insertion interval of the connector is inevitably determined, and the insertion position of the connector is clarified, thereby improving the efficiency of the connection work. I can plan.
1-6 can be said to have a bent shape with one or more corners. It is desirable that the bent part 120 has one or more corners for stress relaxation between the circuit boards 500. Specifically, the bent portion 120 shown in FIGS. 1 to 6 has three corners (illustrated by (1) to (3) in FIG. 3). Thus, it is more desirable to provide three or more corners for stress relaxation between the circuit boards 500.
However, as the corners of the bent portion 120 increase, the stress relaxation effect is expected. However, depending on the shape of the bent portion 120, the entire area of the connection wiring board 100 increases, and thus the bent portion 120 is bent more than necessary. It should also be considered not to lengthen the part 120.

実施の形態２．
接続用配線板１００の曲折部１２０の曲折形状の他の例を示す。
図７は、四角い渦巻き状の形状をした曲折部１２０の第１の例を示す図である。
図８は、四角い渦巻き状の形状をした曲折部１２０の第２の例を示す図である。
図９は、ミアンダ状の形状をした曲折部１２０の例を示す図である。
図１０は、曲線状の形状をした曲折部１２０の例を示す図である。 Embodiment 2. FIG.
The other example of the bending shape of the bending part 120 of the wiring board 100 for a connection is shown.
FIG. 7 is a diagram illustrating a first example of the bent portion 120 having a square spiral shape.
FIG. 8 is a diagram illustrating a second example of the bent portion 120 having a square spiral shape.
FIG. 9 is a diagram illustrating an example of a bent portion 120 having a meander shape.
FIG. 10 is a diagram illustrating an example of a bent portion 120 having a curved shape.

すなわち、図７〜図１０は、第１のプリント配線板と第２のプリント配線板とを電気的に接続する電気接続構造であって、前記第１のプリント配線板と前記第２のプリント配線板とを電気的に接続する第３のプリント配線板（接続用配線板１００）が備えられたものであって、前記第３のプリント配線板の形状が、少なくとも一つの渦巻き状の形状をしているか、または少なくとも一つのミアンダ状（曲がりくねり）の形状をしていることを特徴とする電気接続構造を示すものである。
本実施の形態の説明においては、回路基板コネクタ１６０、回路基板５００、電気回路５０１、基板取付板５０２の図示を省略しているが、図１の接続用配線板１００が本実施の形態の接続用配線板１００に置き換わるだけで、同様である。
曲折部１２０の少なくとも一部に渦巻き状の形状を有する、もしくは、接続用配線板１００の少なくとも一部にミアンダ状の形状を有することで、第１のプリント配線板に備えられる回路基板コネクタ１６０ａと第２のプリント配線板に備えられる回路基板コネクタ１６０ｂの間隔が変化した場合に、曲折部１２０は弾性変形することが可能となる。ここで、ミアンダ状とは、山谷を交互に（ジグザグに）蛇行した形状を示す。図９の例では、谷の部分が１つであるが、接続用配線板１００の大きさの制約が無ければ、曲折部１２０の山谷の数をもっと増やすことも可能である。また、ミアンダ状は、Ｍ字型、Ｎ字型、Ｓ字型、Ｕ字型、Ｖ字型、Ｗ字型、Ｚ字型でも良い。
図７又は図８に示す曲折部１２０の渦巻き状の形状は、板端部１１０を取り巻くように形成されている。（図７においては、板端部１１０ｂ側。図８においては板端部１１０ａと板端部１１０ｂとの両方）。渦巻き状の形状は、図７に示すように片側の板端部１１０ｂを取り巻く形状でも良いし、図８に示すように両側の板端部１１０ａと板端部１１０ｂとを取り巻く形状でも良い。
また、図９に示す曲折部１２０のミアンダ状の形状は、板端部１１０ａと板端部１１０ｂとの間に形成されている。
このように曲折部１２０を配置することにより、曲折部１２０の角の数を増やしても、曲折部１２０は、省スペース化を図れる。具体的には曲折部１２０の角は６個有り（図７〜９に、（１）〜（６）で図示）、実施の形態１よりも角が多いので、回路基板５００間の応力はより緩和される。すなわち、曲折部１２０の角は６個以上あると、回路基板５００間の応力はより緩和され、望ましい。
さらに図１０は、曲折部１２０の角が直角では無く、曲線状の例である。図１０は、図９の例における曲折部１２０の角を曲線化したものであるが、実施の形態２に限らず、実施の形態１または後述の実施の形態３においても、曲線状の形状を適用することが出来る。また、図９の曲折部１２０には、直線部分が残っているが、直線部分を無くし、曲折部１２０は、円弧状の組み合わせでも構わない。 That is, FIGS. 7 to 10 show an electrical connection structure for electrically connecting the first printed wiring board and the second printed wiring board, and the first printed wiring board and the second printed wiring. A third printed wiring board (connection wiring board 100) for electrically connecting the board and the third printed wiring board has at least one spiral shape. Or an electrical connection structure characterized in that it has at least one meandering (bending and winding) shape.
In the description of the present embodiment, the circuit board connector 160, the circuit board 500, the electric circuit 501, and the board mounting plate 502 are not shown, but the connection wiring board 100 in FIG. It is the same only by replacing the wiring board 100 for use.
A circuit board connector 160a provided in the first printed wiring board by having at least a part of the bent part 120 a spiral shape or at least a part of the connection wiring board 100 having a meandering shape; When the distance between the circuit board connectors 160b provided on the second printed wiring board changes, the bent portion 120 can be elastically deformed. Here, the meander shape indicates a shape in which mountains and valleys meander alternately (zigzag). In the example of FIG. 9, the number of the valleys is one, but if there is no restriction on the size of the connecting wiring board 100, the number of peaks and valleys of the bent portion 120 can be further increased. The meander shape may be M-shaped, N-shaped, S-shaped, U-shaped, V-shaped, W-shaped, or Z-shaped.
The spiral shape of the bent portion 120 shown in FIG. 7 or 8 is formed so as to surround the plate end portion 110. (In FIG. 7, the plate end portion 110b side. In FIG. 8, both the plate end portion 110a and the plate end portion 110b). The spiral shape may be a shape surrounding the plate end portion 110b on one side as shown in FIG. 7, or a shape surrounding the plate end portion 110a and the plate end portion 110b on both sides as shown in FIG.
Further, the meandering shape of the bent portion 120 shown in FIG. 9 is formed between the plate end portion 110a and the plate end portion 110b.
By arranging the bent portion 120 in this manner, the bent portion 120 can save space even if the number of corners of the bent portion 120 is increased. Specifically, there are six corners of the bent portion 120 (shown in FIGS. 7 to 9 as (1) to (6)), and there are more corners than in the first embodiment, so the stress between the circuit boards 500 is more Alleviated. That is, it is desirable that the number of corners of the bent portion 120 is six or more because stress between the circuit boards 500 is further relaxed.
Further, FIG. 10 is an example in which the corner of the bent portion 120 is not a right angle but a curved shape. FIG. 10 is obtained by curving the corner of the bent portion 120 in the example of FIG. 9, but the curved shape is not limited to the second embodiment but also in the first embodiment or the third embodiment described later. It can be applied. Moreover, although the straight part remains in the bending part 120 of FIG. 9, a straight part may be eliminated and the bending part 120 may be a circular arc combination.

例えば、図１もしくは図２の回路基板５００間の接続に、本実施の形態の接続用配線板１００を使用したと想定する。
本実施の形態により、曲折部１２０が変形可能で有り、組立作業者は、コネクタをＸ方向、Ｙ方向、Ｚ方向のどの方向にでも動かすことが出来、コネクタ１５０ａとコネクタ１５０ｂとの間の距離を調整することが出来る。
また、回路基板コネクタ１６０間にて、ねじれによる歪みが生じ、回路基板コネクタ１６０同士にＺ方向に傾きが生じた場合でも、接続用配線板１００は、コネクタ１５０の位置や向きを調整し、コネクタ１５０と回路基板コネクタ１６０とを嵌合させることが出来る。
同時に、接続用配線板１００は、接続される回路基板５００間の位置ずれによる残留応力や、熱応力によるひずみを緩和させることが可能となり、はんだ接合部に発生する接続不良を起こさなくなる効果も有る。 For example, it is assumed that the connection wiring board 100 of the present embodiment is used for connection between the circuit boards 500 of FIG. 1 or FIG.
According to the present embodiment, the bent portion 120 can be deformed, and the assembly operator can move the connector in any of the X, Y, and Z directions, and the distance between the connector 150a and the connector 150b. Can be adjusted.
Further, even when distortion due to torsion occurs between the circuit board connectors 160 and the circuit board connectors 160 are inclined in the Z direction, the connection wiring board 100 adjusts the position and orientation of the connector 150 to 150 and the circuit board connector 160 can be fitted.
At the same time, the connection wiring board 100 can relieve residual stress due to misalignment between the circuit boards 500 to be connected and distortion due to thermal stress, and has an effect of preventing connection failure occurring at the solder joint. .

実施の形態３．
接続用配線板１００の板端部１１０が２つよりも多い例を示す。
図１１は、板端部１１０が３つ有る接続用配線板１００の例を示す図である。図１１においては、板端部１１０が３つの例を示しているが、数量は限定されない。
図１１の例においては、隣合う板端部１１０ａと１１０ｂ間および隣合う板端部１１０ｂと１１０ｃ間は、５つの角を有する曲折部１２０で接続されている。（図１１に（１ａ）〜（５ａ）、（１ｂ）〜（５ｂ）で図示）。実施の形態１の曲折部１２０の３つの角よりも、本例のように５つの角を備えることの方が、回路基板５００間の応力緩和には望ましい。ただし、必要に応じて、曲折部１２０の有する角を増やすことも、減らすことも可能である。
また、実施の形態２のような、曲折部１２０は、渦巻き状または、ミアンダ状の形状とすることも出来る。
本実施の形態に示す例においても、曲折部１２０が回路基板５００間の応力を緩和することが可能であり、２つよりも多い回路基板５００を接続することが可能である。
このように、様々な場合の回路基板５００間の電気的接続に、接続用配線板１００は利用可能である。 Embodiment 3 FIG.
An example in which there are more than two plate end portions 110 of the connection wiring board 100 is shown.
FIG. 11 is a diagram illustrating an example of the connection wiring board 100 having three plate end portions 110. In FIG. 11, although the board edge part 110 has shown three examples, quantity is not limited.
In the example of FIG. 11, the adjacent plate end portions 110a and 110b and the adjacent plate end portions 110b and 110c are connected by a bent portion 120 having five corners. (Illustrated as (1a) to (5a) and (1b) to (5b) in FIG. 11). In order to relieve the stress between the circuit boards 500, it is preferable to provide five corners as in this example rather than the three corners of the bent portion 120 of the first embodiment. However, the corners of the bent part 120 can be increased or decreased as necessary.
Moreover, the bent part 120 like Embodiment 2 can also be made into the shape of a spiral or a meander shape.
Also in the example shown in the present embodiment, the bent portion 120 can relieve stress between the circuit boards 500, and more than two circuit boards 500 can be connected.
Thus, the connection wiring board 100 can be used for electrical connection between the circuit boards 500 in various cases.

実施の形態１〜３における電気回路５０１が形成された複数の回路基板５００を電気的に接続する接続用配線板１００の製造方法は、１枚の平らな配線板１７０から複数の板端部１１０を形成する板端部形成工程と、１枚の平らな配線板１７０から複数の板端部１１０をつなぐ曲折した曲折部１２０を形成する曲折部形成工程と、複数の板端部１１０に複数の回路基板５００の電気回路５０１とそれぞれ電気的に接続する複数のコネクタ１５０をそれぞれ形成するコネクタ形成工程と、曲折部１２０に前記コネクタ形成工程が形成した複数のコネクタ１５０を電気的に接続する導電線１４０を形成する導電線形成工程とを備える。   The manufacturing method of the connection wiring board 100 that electrically connects the plurality of circuit boards 500 on which the electric circuit 501 is formed in the first to third embodiments is performed from one flat wiring board 170 to a plurality of plate end portions 110. A plate end forming step of forming a bent portion 120 that connects a plurality of plate end portions 110 from one flat wiring board 170, and a plurality of plate end portions 110 are provided with a plurality of bent end portions 110. A connector forming step for forming a plurality of connectors 150 respectively electrically connected to the electric circuit 501 of the circuit board 500, and a conductive wire for electrically connecting the plurality of connectors 150 formed by the connector forming step to the bent portion 120 A conductive line forming step of forming 140.

１００ 接続用配線板、１１０ 板端部、１２０ 曲折部、１３０ 電極パターン、１４０ 導電線、１５０ コネクタ、１６０ 回路基板コネクタ、１７０ 配線板、５００ 回路基板、５０１ 電気回路、５０２ 基板取付板。   DESCRIPTION OF SYMBOLS 100 Connection wiring board, 110 Board edge part, 120 Bending part, 130 Electrode pattern, 140 Conductive line, 150 Connector, 160 Circuit board connector, 170 Wiring board, 500 Circuit board, 501 Electrical circuit, 502 Board mounting board

Claims (6)

電気回路が形成された複数の回路基板を電気的に接続する接続用配線板において、
前記複数の回路基板の電気回路とそれぞれ電気的に接続する複数のコネクタと、
前記複数のコネクタを電気的に接続する導電線と、
前記複数のコネクタと前記導電線とを配置した１枚の平らな配線板と
を備え、
前記配線板は、複数の板端部と前記複数の板端部をつなぐ曲折した曲折部とを有し、前記複数の板端部に前記複数のコネクタをそれぞれ配置し、前記曲折部に前記導電線を配置したことを特徴とした接続用配線板。 In the connection wiring board for electrically connecting a plurality of circuit boards on which an electric circuit is formed,
A plurality of connectors electrically connected to electrical circuits of the plurality of circuit boards, respectively;
Conductive wires for electrically connecting the plurality of connectors;
A flat wiring board on which the plurality of connectors and the conductive wires are arranged;
The wiring board has a plurality of plate end portions and a bent portion connecting the plurality of plate end portions, and the plurality of connectors are arranged at the plurality of plate end portions, respectively, and the conductive portions are connected to the bent portions. A wiring board for connection, characterized by arranging wires. 前記曲折部は、前記複数の板端部間を結ぶ最短距離を迂回して配置されることを特徴とする請求項１記載の接続用配線板。   The connection wiring board according to claim 1, wherein the bent portion is arranged to bypass the shortest distance connecting the plurality of plate end portions. 前記曲折部は、１つ以上の角を備えた曲折した形状を有することを特徴とする請求項１又は２記載の接続用配線板。   The connection wiring board according to claim 1, wherein the bent portion has a bent shape having one or more corners. 前記曲折部は、少なくとも一部に渦巻き状の形状を有することを特徴とする請求項１〜３いずれか記載の接続用配線板。   The wiring board for connection according to claim 1, wherein the bent portion has a spiral shape at least in part. 前記曲折部は、少なくとも一部にミアンダ状の形状を有することを特徴とする請求項１〜３いずれか記載の接続用配線板。   The wiring board for connection according to claim 1, wherein the bent portion has a meandering shape at least in part. 電気回路が形成された複数の回路基板を電気的に接続する接続用配線板の製造方法において、
１枚の平らな配線板から複数の板端部を形成する板端部形成工程と、
前記１枚の平らな配線板から前記複数の板端部をつなぐ曲折した曲折部を形成する曲折部形成工程と、
前記複数の板端部に前記複数の回路基板の電気回路とそれぞれ電気的に接続する複数のコネクタをそれぞれ形成するコネクタ形成工程と、
前記曲折部に前記コネクタ形成工程が形成した複数のコネクタを電気的に接続する導電線を形成する導電線形成工程と
を備えたことを特徴とした接続用配線板の製造方法。
In the method of manufacturing a connection wiring board for electrically connecting a plurality of circuit boards on which electric circuits are formed,
A plate end forming step of forming a plurality of plate ends from one flat wiring board;
A bent portion forming step of forming a bent portion connecting the plurality of plate end portions from the one flat wiring board;
A connector forming step of forming a plurality of connectors respectively electrically connected to the electric circuits of the plurality of circuit boards at the plurality of plate end portions;
A method of manufacturing a connection wiring board, comprising: a conductive wire forming step of forming conductive wires for electrically connecting a plurality of connectors formed by the connector forming step to the bent portion.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016093210A1 (en) * 2014-12-08 2017-07-27 株式会社フジクラ Elastic board
JPWO2018128157A1 (en) * 2017-01-05 2019-06-27 株式会社村田製作所 Electronics
JP2020174126A (en) * 2019-04-10 2020-10-22 富士通株式会社 Electronic device and electronic unit

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JPH10290084A (en) * 1997-04-15 1998-10-27 Sony Corp Electronic equipment
JPH11198740A (en) * 1998-01-14 1999-07-27 Yazaki Corp Structure of assembling gauge on wiring board

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10290084A (en) * 1997-04-15 1998-10-27 Sony Corp Electronic equipment
JPH11198740A (en) * 1998-01-14 1999-07-27 Yazaki Corp Structure of assembling gauge on wiring board

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2016093210A1 (en) * 2014-12-08 2017-07-27 株式会社フジクラ Elastic board
JPWO2018128157A1 (en) * 2017-01-05 2019-06-27 株式会社村田製作所 Electronics
JP2020174126A (en) * 2019-04-10 2020-10-22 富士通株式会社 Electronic device and electronic unit
JP7298254B2 (en) 2019-04-10 2023-06-27 富士通株式会社 Electronic equipment and electronic units

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