JP3949394B2 - Flat circuit body connection structure and flat circuit body connection method - Google Patents

Flat circuit body connection structure and flat circuit body connection method Download PDF

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JP3949394B2
JP3949394B2 JP2001157376A JP2001157376A JP3949394B2 JP 3949394 B2 JP3949394 B2 JP 3949394B2 JP 2001157376 A JP2001157376 A JP 2001157376A JP 2001157376 A JP2001157376 A JP 2001157376A JP 3949394 B2 JP3949394 B2 JP 3949394B2
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flat circuit
circuit body
connection
electrical connection
sheet material
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JP2002354624A (en
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裕史 江塚
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Yazaki Corp
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Yazaki Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は、絶縁シート材に導体をパターン形成して得た二つのフラット回路体同士を接続するフラット回路体の接続構造及びフラット回路体の接続方法に関し、特に、その電気接続部における応力集中を緩和させる改良技術に関する。
【０００２】
【従来の技術】
車両用ワイヤーハーネスの配索には、絶縁シート材に導体をパターン形成して得たフラット回路体を多用することで、放熱性、軽量化、組み付け作業性を向上させている。この種のフラット回路体には、複数の帯状薄板からなる導体を絶縁シート材で覆って、可撓性を有する帯状ケーブルに形成したＦＦＣ（フレキシブル・フラット・ケーブル）や、可撓性を有する絶縁基板に導体をパターン印刷したＦＰＣ（フレキシブル・プリント・配線板）等がある。
【０００３】
従来、この種のフラット回路体を接続するには、図３に示す、平板部１の両側縁に複数の突刺部３を起立させた金属製の電気接続端子５を用いていた。この電気接続端子５を用いてフラット回路体７、７を接続するには、先ず、二つのフラット回路体７、７に亘って、電気接続端子５の突刺部３を図４に示すように絶縁シート材９及び導体１１に貫通させる。
【０００４】
次いで、図５に示すように、電気接続端子５の平板部１を、下側クリンパ１３の上部凹面１５で支持するとともに、一対の成形用湾曲面１７、１７を有した上側クリンパ１９を、突刺部３の先端側から下降する方向に押し下げる。すると、図６に示すように、突刺部３の先端が成形用湾曲面１７、１７に沿って互いに接近する方向に折り曲げられた後、フラット回路体７の上面に当接して加締められた状態となる。
【０００５】
これにより、図７に示すように、突刺部３が、フラット回路体７の絶縁被覆９及び導体１１を貫通することで、図８に示すように、双方のフラット回路体７、７を電気的、且つ構造的に接続することができた。
【０００６】
【発明が解決しようとする課題】
しかしながら、上記した従来の電気接続端子を用いたフラット回路体同士の接続構造は、導体に突刺部を貫通させることで電気的且つ構造的な接続を行うため、フラット回路体に図８に示す矢印ａ方向の引っ張り力の他、曲げ、振動等の外力が作用すると、その外力が突刺部と貫通部との間に集中し、突刺部貫通孔が広がったり、或いは電気接続端子が変形したりして、導体と電気接続端子との電気的な接続の信頼性を低下させる問題があった。
本発明は上記状況に鑑みてなされたもので、突刺部を導体に貫通させて接続したフラット回路体に、引っ張り、曲げ、振動等の外力が作用しても、突刺部の貫通部に応力の集中することのないフラット回路体の接続構造及びフラット回路体の接続方法を提供し、もって、フラット回路体の接続部における電気的接続の信頼性向上を図ることを目的とする。
【０００７】
【課題を解決するための手段】
上記目的を達成するための本発明に係る請求項１記載のフラット回路体の接続構造は、絶縁シート材に導体をパターン形成したフラット回路体と、二つの該フラット回路体の前記導体及び前記絶縁シート材に突刺部を貫通させて該導体同士を電気的に接続すると共に該二つのフラット回路体に前記突刺部を加締め固定することにより構造的に接続する電気接続端子と、一方の前記フラット回路体の接続縁部で前記絶縁シート材を延出させて形成した少なくとも一対の接着用突片とを備え、前記電気接続端子によって接続した二つのフラット回路体の一方から延出した前記接着用突片を他方のフラット回路体の接続縁部に接着固定したことを特徴とする。
【０００８】
このフラット回路体の接続構造では、二つのフラット回路体の接続部において、一方のフラット回路体の接続縁部から延出させた一対の接着用突片を、他方のフラット回路体の接続縁部に接着固定する。絶縁シート材を延出させた面材としての接着用突片を、二つのフラット回路体の接続縁部にて固定するので、突刺部を貫通させて加締め固定する電気接続端子の接続部より高剛性での接続が可能となる。したがって、二つのフラット回路体の間に作用する引っ張り、曲げ、振動等の外力は、剛性の高い（すなわち、変形の少ない）、接着用突片に集中することになり、電気的な接続に重要な突刺部の貫通部に応力が集中しなくなる。これにより、突刺部の貫通部に応力が集中し、突刺部貫通孔が広がったり、電気接続端子が変形したりすることによる電気的接続の信頼性低下が生じなくなる。
【０００９】
請求項２記載のフラット回路体の接続構造は、複数の前記電気接続端子の外側となるように、前記一対の接着用突片を前記接続縁部の両端に配設したことを特徴とする。
【００１０】
このフラット回路体の接続構造では、複数の電気接続端子の外側に、一対の接着用突片を配設することにより、フラット回路体の接続部に、例えばフラット回路体の面に沿う曲げ外力が作用した場合であっても、いずれか一方の接着用突片が、曲げ変形量の最も多くなる外側に位置することになり、この接着用突片に曲げ外力による応力が集中し、電気接続端子の接続部に応力が集中しなくなる。
【００１１】
請求項３記載のフラット回路体の接続方法は、絶縁シート材に導体をパターン形成した異なる二つのフラット回路体同士を接続するフラット回路体の接続方法であって、一方の前記フラット回路体の接続縁部から前記絶縁シート材を延出させて形成した少なくとも一対の接着用突片を、他方のフラット回路体の接続縁部に重ね、二つの該フラット回路体の前記導体及び前記絶縁シート材に電気接続端子の突刺部を貫通させて該電気接続端子を加締め固定した後、前記一対の接着用突片を他方のフラット回路体の接続縁部に加熱接着することを特徴とする。
【００１２】
このフラット回路体の接続方法では、二つのフラット回路体に亘って電気接続端子を加締め固定した後に、接着用突片を他方のフラット回路体の接続縁部に加熱接着することで、加締工程でのフラット回路体同士の相対的な位置変位が生じなくなった後に、接着用突片を加熱接着できる。これにより、例えば接着用突片の接着後に加締め固定を行った場合に生じる接着用突片の弛みを確実に防止でき、常に応力を接着用突片で分担できるように、接着用突片を弛みなく接着することができる。
【００１３】
【発明の実施の形態】
以下、本発明に係るフラット回路体の接続構造及びフラット回路体の接続方法の好適な実施の形態を図面を参照して詳細に説明する。
図１は本発明に係るフラット回路体の接続構造を表す外観斜視図、図２は図１に示した接続構造のフラット回路体接続前の平面図である。なお、図３〜図８に示した部材と同一の部材には同一の符号を付し、重複する説明は省略するものとする。
【００１４】
この実施の形態の接続構造は、複数の帯状薄板からなる導体を絶縁シート材で覆って、可撓性を有する帯状ケーブルに形成したＦＦＣ（フレキシブル・フラット・ケーブル）や、可撓性を有する絶縁基板に導体をパターン印刷したＦＰＣ（フレキシブル・プリント・配線板）等のフラット回路体２１、２１同士の接続に好適に用いることができる。
【００１５】
ＦＦＣであるフラット回路体２１を製造するには、銅箔からなる導体２３の一方の面に、キャリアテープと称されるフィルムを貼り合わせ、銅箔をこのフィルムと共に回路パターン形状に打ち抜く。打ち抜かれた回路パターンの他方の面に、ラミネートフィルムである絶縁シート材２５を貼り合せる。次いで、導体２３の一方の面に貼り合せた上記のキャリアテープを剥がし、その面に同じくラミネートフィルムである絶縁シート材２５を貼り合せ、導体２３をサンドイッチ状に挟んで加熱接着する。このようにして形成したシート状の回路体を、必要な形状に打ち抜くことで、フラット回路体２１を得る。
【００１６】
この際、接続する二つのフラット回路体２１、２１の一方の接続縁部は、図２に示すように、凹状に打ち抜く。すなわち、一方の接続縁部には、絶縁シート材２５を延出させた一対の接着用突片２７、２７を形成する。接着用突片２７、２７は、凹部の内側に複数の導体２３を位置させるようにして、接続縁部の両端に配設することが好ましい。この接着用突片２７、２７の一方の面（図１の下面）には、熱溶着性の接着剤を塗布しておく。
【００１７】
一方、この接着用突片２７、２７を設けた一方の接続縁部に接続する他方の接続縁部は、図２に示すように、従来と同様に直線状となっている。
【００１８】
従来と同様にして電気接続端子５によって接続したフラット回路体２１の接続縁部は、一方のフラット回路体２１の接続縁部から延出した一対の接着用突片２７、２７が、他方のフラット回路体２１の接続縁部に接着している。つまり、従来の接続構造において電気接続端子５のみによって構造的に接続されていたフラット回路体２１、２１同士が、本実施の形態では、電気接続端子５に加え、接着用突片２７、２７によっても接続した構造となっている。
【００１９】
このような構造でフラット回路体２１を接続するには、一方のフラット回路体２１の接続縁部から延出した接着用突片２７、２７を、他方のフラット回路体２１の接続縁部に重ねる。次いで、二つのフラット回路体２１、２１の導体２３及び絶縁シート材２５に電気接続端子５の突刺部３を貫通させて、電気接続端子５を従来と同様にして加締め固定する。その後、一対の接着用突片２７、２７を他方のフラット回路体２１の接続縁部に加熱接着する。
【００２０】
従って、このフラット回路体２１の接続構造では、二つのフラット回路体２１、２１の接続部において、一方の接続縁部から延出させた一対の接着用突片２７、２７を、他方のフラット回路体２１の接続縁部に接着固定するので、接着用突片２７、２７が面材としての連結構造材となり、従来、突刺部３の貫通部のみに作用していた外力を、この接着用突片２７、２７に分担させることができる。したがって、二つのフラット回路体２１、２１の間に作用する引っ張り、曲げ、振動等の外力が、電気的な接続に重要な突刺部３の貫通部に集中しなくなり、突刺部貫通孔が広がったり、電気接続端子５が変形したりすることによる電気的接続の信頼性低下が生じなくなる。
【００２１】
また、複数の電気接続端子５群の外側に、一対の接着用突片２７、２７を配設することにより、フラット回路体２１の接続部に、例えばフラット回路体２１の面に沿う曲げ外力が作用した場合であっても、いずれか一方の接着用突片２７が、曲げ変形量の最も多くなる外側に位置することになり、この接着用突片２７に曲げ外力による応力が集中し、電気接続端子５の接続部に応力が集中しなくなる。
【００２２】
さらに、上記したフラット回路体の接続方法によれば、二つのフラット回路体２１、２１に亘って電気接続端子５を加締め固定した後に、接着用突片２７、２７を他方のフラット回路体２１の接続縁部に加熱接着するので、加締工程でのフラット回路体同士の相対的な位置変位が生じなくなった後に、接着用突片２７、２７を加熱接着することができる。したがって、例えば接着用突片２７、２７の接着後に加締め固定を行った場合に生じる接着用突片２７、２７の弛みを確実に防止でき、常に応力を接着用突片２７、２７で分担する構造を確実に製作することができる。
【００２３】
なお、上記の実施の形態では、電気接続端子５によって導体２３が接続される場合を例に説明したが、本発明に係るフラット回路体の接続構造は、導体同士が例えばハンダによって接続される構造においても、上記と同様の作用により、電気的な接続部に応力が集中しなくなり、電気的接続の信頼性低下を防止する効果を奏する。
【００２４】
【発明の効果】
以上詳細に説明したように、本発明に係るフラット回路体の接続構造によれば、導体及び絶縁シート材に電気接続端子の突刺部を貫通させて加締め固定し、この電気接続端子を介して電気的且つ構造的に接続した二つのフラット回路体の接続部において、一方のフラット回路体の接続縁部から延出させた一対の接着用突片を、他方のフラット回路体の接続縁部に接着固定したので、二つのフラット回路体の間に作用する引っ張り、曲げ、振動等の外力が、接着用突片に集中し、突刺部の貫通部に集中しなくなる。この結果、突刺部の貫通部に応力が集中し、突刺部貫通孔が広がったり、電気接続端子が変形したりすることによる電気的接続の信頼性低下を防止することができる。
【００２５】
また、本発明に係るフラット回路体の接続方法によれば、二つのフラット回路体を接続するに際し、一方のフラット回路体の接続縁部から延出させた接着用突片を他方のフラット回路体の接続縁部に重ねておき、二つのフラット回路体に亘って電気接続端子を加締め固定した後、この接着用突片を他方のフラット回路体の接続縁部に加熱接着するので、加締工程でのフラット回路体同士の相対的な位置変位が生じなくなった後に、接着用突片を加熱接着でき、例えば接着用突片の接着後に加締め固定を行った場合に生じる接着用突片の弛みを確実に防止でき、常に接着用突片を弛みなく接着することができる。
【図面の簡単な説明】
【図１】本発明に係るフラット回路体の接続構造を表す外観斜視図である。
【図２】図１に示した接続構造のフラット回路体接続前の平面図である。
【図３】従来のフラット回路体と電気接続端子を表す分解斜視図である。
【図４】図３に示した電気接続端子の突刺部をフラット回路体に貫通させた突き刺し工程後の状態を表す断面図である。
【図５】クリンパを用いた加締め開始時の状態を表す断面図である。
【図６】加締め完了時の状態を表す断面図である。
【図７】フラット回路体の導体に適正に加締められた電気接続端子を表す断面図である。
【図８】引っ張り外力の作用したフラット回路体の斜視図である。
【符号の説明】
３ 突刺部
５ 電気接続端子
２１ フラット回路体
２３ 導体
２５ 絶縁シート材
２７ 接着用突片[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flat circuit body connection structure for connecting two flat circuit bodies obtained by patterning conductors on an insulating sheet material, and a flat circuit body connection method, and in particular, stress concentration in the electrical connection portion. It relates to improved technology to alleviate.
[0002]
[Prior art]
For the wiring of the vehicle wiring harness, a flat circuit body obtained by patterning a conductor on an insulating sheet material is frequently used to improve heat dissipation, weight reduction, and assembly workability. In this type of flat circuit body, an FFC (flexible flat cable) formed by forming a flexible strip-shaped cable by covering a plurality of strip-shaped conductors with an insulating sheet material, or a flexible insulation There is an FPC (flexible printed circuit board) or the like in which a conductor is pattern-printed on a substrate.
[0003]
Conventionally, in order to connect this type of flat circuit body, a metal electrical connection terminal 5 in which a plurality of protruding portions 3 are erected on both side edges of the flat plate portion 1 shown in FIG. 3 has been used. In order to connect the flat circuit bodies 7 and 7 using the electrical connection terminal 5, first, the piercing portion 3 of the electrical connection terminal 5 is insulated across the two flat circuit bodies 7 and 7 as shown in FIG. The sheet material 9 and the conductor 11 are penetrated.
[0004]
Next, as shown in FIG. 5, the flat plate portion 1 of the electrical connection terminal 5 is supported by the upper concave surface 15 of the lower crimper 13, and the upper crimper 19 having the pair of molding curved surfaces 17, 17 is pierced. Push down from the tip side of the part 3 in the downward direction. Then, as shown in FIG. 6, the tip of the piercing portion 3 is bent in a direction approaching each other along the molding curved surfaces 17, 17, and then is in contact with the upper surface of the flat circuit body 7 and crimped. It becomes.
[0005]
Thereby, as shown in FIG. 7, the piercing portion 3 penetrates the insulating coating 9 and the conductor 11 of the flat circuit body 7, thereby electrically connecting both the flat circuit bodies 7 and 7 as shown in FIG. 8. And structurally connected.
[0006]
[Problems to be solved by the invention]
However, since the connection structure between the flat circuit bodies using the conventional electrical connection terminals described above performs an electrical and structural connection by passing the piercing portion through the conductor, the arrow shown in FIG. When an external force such as bending or vibration acts in addition to the pulling force in the a direction, the external force is concentrated between the piercing portion and the penetrating portion, and the piercing portion through hole is expanded or the electrical connection terminal is deformed. Thus, there is a problem that the reliability of electrical connection between the conductor and the electrical connection terminal is lowered.
The present invention has been made in view of the above situation, and even if an external force such as pulling, bending, vibration, etc. is applied to a flat circuit body in which the piercing portion is passed through the conductor and connected, stress is applied to the piercing portion of the piercing portion. An object of the present invention is to provide a flat circuit body connection structure and a flat circuit body connection method that do not concentrate, and to improve the reliability of electrical connection at a connection portion of the flat circuit body.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the flat circuit body connection structure according to claim 1 of the present invention includes a flat circuit body in which a conductor is patterned on an insulating sheet material, the conductors of the two flat circuit bodies, and the insulation. An electrical connection terminal for connecting the conductors by passing the pierced portion through the sheet material and electrically connecting the conductors to the two flat circuit bodies by caulking and fixing the pierced portion, and one of the flats The bonding sheet extending from one of the two flat circuit bodies connected by the electrical connection terminal, and comprising at least a pair of bonding protrusions formed by extending the insulating sheet material at a connection edge of the circuit body. The protruding piece is bonded and fixed to the connection edge of the other flat circuit body.
[0008]
In the connection structure of the flat circuit body, in the connection part of the two flat circuit bodies, a pair of bonding protrusions extended from the connection edge part of one flat circuit body are connected to the connection edge part of the other flat circuit body. Adhere to and fix. Since the bonding protrusion as the face material from which the insulating sheet material is extended is fixed at the connection edge of the two flat circuit bodies, from the connection portion of the electrical connection terminal that is fixed by caulking through the piercing portion Connection with high rigidity is possible. Therefore, external forces such as pulling, bending, and vibration acting between the two flat circuit bodies are concentrated on the high-rigidity (that is, less deformed) adhesive protrusion, which is important for electrical connection. Stress no longer concentrates on the penetrating part of the piercing part As a result, stress concentrates on the penetrating portion of the piercing portion, and the piercing portion through hole expands or the electrical connection terminal is deformed, so that the reliability of electrical connection is not lowered.
[0009]
The flat circuit body connection structure according to claim 2 is characterized in that the pair of bonding projecting pieces are disposed at both ends of the connection edge so as to be outside the plurality of the electrical connection terminals.
[0010]
In this flat circuit body connection structure, by arranging a pair of bonding protrusions outside the plurality of electrical connection terminals, for example, bending external force along the plane of the flat circuit body is applied to the connection portion of the flat circuit body. Even if it acts, either one of the bonding protrusions will be located on the outside where the amount of bending deformation is the largest, and stress due to bending external force is concentrated on this bonding protrusion, and the electric connection terminal Stress does not concentrate on the connecting part.
[0011]
The connection method of the flat circuit body of Claim 3 is a connection method of the flat circuit body which connects two different flat circuit bodies which patterned the conductor in the insulating sheet material, Comprising: Connection of one said flat circuit body At least one pair of protruding protrusions formed by extending the insulating sheet material from the edge portion is overlaid on the connection edge portion of the other flat circuit body, and the conductor and the insulating sheet material of the two flat circuit bodies are overlapped. After the pierced portion of the electrical connection terminal is penetrated and the electrical connection terminal is crimped and fixed, the pair of bonding projection pieces are heat-bonded to the connection edge of the other flat circuit body.
[0012]
In this flat circuit body connection method, after the electrical connection terminals are crimped and fixed across the two flat circuit bodies, the bonding protrusion is heated and bonded to the connection edge of the other flat circuit body, thereby crimping. After the relative positional displacement between the flat circuit bodies in the process does not occur, the bonding projection piece can be heated and bonded. As a result, for example, it is possible to reliably prevent loosening of the bonding protrusions that occur when caulking and fixing are performed after bonding of the bonding protrusions, and to always share the stress with the bonding protrusions. Can be bonded without slack.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a flat circuit body connection structure and a flat circuit body connection method according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is an external perspective view showing a connection structure of a flat circuit body according to the present invention, and FIG. 2 is a plan view of the connection structure shown in FIG. In addition, the same code | symbol is attached | subjected to the member same as the member shown in FIGS. 3-8, and the overlapping description shall be abbreviate | omitted.
[0014]
The connection structure of this embodiment includes an FFC (flexible flat cable) formed by forming a flexible strip-shaped cable by covering a plurality of strip-shaped conductors with an insulating sheet material, and a flexible insulating layer. It can be suitably used for connection between flat circuit bodies 21 and 21 such as FPC (flexible printed circuit board) having a conductor printed on a substrate.
[0015]
In order to manufacture the flat circuit body 21 which is FFC, a film called a carrier tape is bonded to one surface of the conductor 23 made of copper foil, and the copper foil is punched into a circuit pattern shape together with this film. An insulating sheet material 25, which is a laminate film, is bonded to the other surface of the punched circuit pattern. Next, the carrier tape bonded to one surface of the conductor 23 is peeled off, and the insulating sheet material 25 which is also a laminate film is bonded to the surface, and the conductor 23 is sandwiched in a sandwich shape and heat bonded. The flat circuit body 21 is obtained by punching the sheet-like circuit body formed in this way into a required shape.
[0016]
At this time, one connecting edge portion of the two flat circuit bodies 21 and 21 to be connected is punched into a concave shape as shown in FIG. That is, a pair of bonding protrusions 27 and 27 with the insulating sheet material 25 extended are formed on one connection edge. The bonding protrusions 27 are preferably disposed at both ends of the connection edge so that the plurality of conductors 23 are positioned inside the recess. A heat-welding adhesive is applied to one surface (the lower surface in FIG. 1) of the bonding protrusions 27 and 27.
[0017]
On the other hand, as shown in FIG. 2, the other connecting edge connected to one connecting edge provided with the bonding protrusions 27, 27 is linear as in the prior art.
[0018]
The connection edge of the flat circuit body 21 connected by the electric connection terminal 5 in the same manner as in the prior art has a pair of bonding protrusions 27 and 27 extending from the connection edge of one flat circuit body 21, and the other flat The circuit body 21 is bonded to the connection edge. In other words, in the present embodiment, the flat circuit bodies 21 and 21 that are structurally connected only by the electrical connection terminal 5 in the conventional connection structure are connected by the bonding protrusions 27 and 27 in addition to the electrical connection terminal 5. Has a connected structure.
[0019]
In order to connect the flat circuit body 21 with such a structure, the adhesive protrusions 27 and 27 extending from the connection edge of one flat circuit body 21 are overlapped on the connection edge of the other flat circuit body 21. . Next, the pierced portion 3 of the electrical connection terminal 5 is passed through the conductor 23 and the insulating sheet material 25 of the two flat circuit bodies 21 and 21, and the electrical connection terminal 5 is caulked and fixed in the same manner as in the prior art. Thereafter, the pair of bonding protrusions 27 and 27 are heat bonded to the connection edge portion of the other flat circuit body 21.
[0020]
Therefore, in the connection structure of the flat circuit body 21, a pair of bonding protrusions 27 and 27 extending from one connection edge portion are connected to the other flat circuit body at the connection portion of the two flat circuit bodies 21 and 21. Since the bonding protrusions 27 and 27 are connected to the connecting edge of the body 21, the bonding protrusions 27 and 27 become a connecting structure material as a face material. The pieces 27 and 27 can be shared. Therefore, external forces such as pulling, bending, and vibration acting between the two flat circuit bodies 21 and 21 are not concentrated on the penetrating portion of the piercing portion 3 that is important for electrical connection, and the piercing portion through-hole is expanded. The reliability of the electrical connection due to the deformation of the electrical connection terminal 5 does not occur.
[0021]
Further, by arranging the pair of bonding protrusions 27 and 27 on the outside of the plurality of electric connection terminals 5 group, a bending external force along the surface of the flat circuit body 21 is applied to the connection portion of the flat circuit body 21, for example. Even in the case of the action, either one of the bonding protrusions 27 is positioned on the outer side where the amount of bending deformation is the largest, and stress due to the bending external force is concentrated on the bonding protrusions 27, The stress is not concentrated on the connection portion of the connection terminal 5.
[0022]
Furthermore, according to the connecting method of the flat circuit body described above, after the electric connection terminal 5 is crimped and fixed across the two flat circuit bodies 21, 21, the bonding protrusions 27, 27 are connected to the other flat circuit body 21. Therefore, after the relative position displacement between the flat circuit bodies does not occur in the caulking process, the bonding protrusions 27 and 27 can be bonded by heating. Therefore, for example, loosening of the bonding protrusions 27 and 27 that occur when caulking and fixing are performed after bonding of the bonding protrusions 27 and 27 can be reliably prevented, and stress is always shared by the bonding protrusions 27 and 27. The structure can be manufactured reliably.
[0023]
In the above embodiment, the case where the conductor 23 is connected by the electrical connection terminal 5 has been described as an example. However, the connection structure of the flat circuit body according to the present invention is a structure in which the conductors are connected by, for example, solder. In this case, due to the same action as described above, the stress is not concentrated on the electrical connection portion, and the effect of preventing the reliability of the electrical connection from being lowered is exhibited.
[0024]
【The invention's effect】
As described above in detail, according to the connection structure of the flat circuit body according to the present invention, the pierced portion of the electrical connection terminal is passed through the conductor and the insulating sheet material, and is fixed by caulking, through the electrical connection terminal. In the connection part of two flat circuit bodies electrically and structurally connected, a pair of bonding protrusions extended from the connection edge part of one flat circuit body are connected to the connection edge part of the other flat circuit body. Since it is bonded and fixed, external forces such as pulling, bending, and vibration acting between the two flat circuit bodies are concentrated on the bonding projection piece and are not concentrated on the penetrating portion of the piercing portion. As a result, stress concentrates on the penetrating portion of the piercing portion, and the piercing portion through-hole is expanded or the electrical connection terminal is deformed, thereby preventing a decrease in reliability of electrical connection.
[0025]
Further, according to the flat circuit body connection method of the present invention, when connecting two flat circuit bodies, the bonding protrusion extended from the connection edge of one flat circuit body is connected to the other flat circuit body. Since the electrical connection terminal is caulked and fixed over the two flat circuit bodies, the bonding protrusion is heated and bonded to the connection edge of the other flat circuit body. After the relative displacement between the flat circuit bodies in the process does not occur, the bonding protrusion can be heated and bonded. For example, the bonding protrusion generated when caulking is fixed after bonding the bonding protrusion. The slack can be reliably prevented, and the bonding protrusion can always be adhered without slack.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing a connection structure of a flat circuit body according to the present invention.
FIG. 2 is a plan view of the connection structure shown in FIG. 1 before connecting a flat circuit body.
FIG. 3 is an exploded perspective view showing a conventional flat circuit body and electrical connection terminals.
4 is a cross-sectional view illustrating a state after a piercing process in which a pierced portion of the electrical connection terminal illustrated in FIG. 3 is passed through a flat circuit body. FIG.
FIG. 5 is a cross-sectional view showing a state at the start of crimping using a crimper.
FIG. 6 is a cross-sectional view illustrating a state when caulking is completed.
FIG. 7 is a cross-sectional view showing an electrical connection terminal properly crimped on a conductor of a flat circuit body.
FIG. 8 is a perspective view of a flat circuit body in which a tensile external force is applied.
[Explanation of symbols]
3 Piercing part 5 Electrical connection terminal 21 Flat circuit body 23 Conductor 25 Insulating sheet material 27 Adhesive piece

Claims (3)

絶縁シート材に導体をパターン形成したフラット回路体と、二つの該フラット回路体の前記導体及び前記絶縁シート材に突刺部を貫通させて該導体同士を電気的に接続すると共に該二つのフラット回路体に前記突刺部を加締め固定することにより構造的に接続する電気接続端子と、一方の前記フラット回路体の接続縁部で前記絶縁シート材を延出させて形成した少なくとも一対の接着用突片とを備え、前記電気接続端子によって接続した二つのフラット回路体の一方から延出した前記接着用突片を他方のフラット回路体の接続縁部に接着固定したことを特徴とするフラット回路体の接続構造。A flat circuit body in which a conductor is patterned on an insulating sheet material, and the conductors of the two flat circuit bodies and the insulating sheet material that penetrate through a piercing portion to electrically connect the conductors and the two flat circuits. An electrical connection terminal that is structurally connected by caulking and fixing the piercing portion to the body , and at least a pair of bonding protrusions formed by extending the insulating sheet material at the connection edge of one of the flat circuit bodies A flat circuit body characterized in that the adhesive projecting piece extending from one of the two flat circuit bodies connected by the electrical connection terminal is bonded and fixed to the connection edge of the other flat circuit body Connection structure. 複数の前記電気接続端子の外側となるように、前記一対の接着用突片を前記接続縁部の両端に配設したことを特徴とする請求項１記載のフラット回路体の接続構造。The flat circuit body connection structure according to claim 1, wherein the pair of bonding protrusions are disposed at both ends of the connection edge so as to be outside the plurality of the electrical connection terminals. 絶縁シート材に導体をパターン形成した異なる二つのフラット回路体同士を接続するフラット回路体の接続方法であって、
一方の前記フラット回路体の接続縁部から前記絶縁シート材を延出させて形成した少なくとも一対の接着用突片を、他方のフラット回路体の接続縁部に重ね、
二つの該フラット回路体の前記導体及び前記絶縁シート材に電気接続端子の突刺部を貫通させて該電気接続端子を加締め固定した後、
前記一対の接着用突片を他方のフラット回路体の接続縁部に加熱接着することを特徴とするフラット回路体の接続方法。A flat circuit body connection method for connecting two different flat circuit bodies in which a conductor is patterned on an insulating sheet material,
At least a pair of adhesive protrusions formed by extending the insulating sheet material from the connection edge of one of the flat circuit bodies is overlaid on the connection edge of the other flat circuit body,
After fixing the electrical connection terminal by caulking and fixing the pierced portion of the electrical connection terminal to the conductor and the insulating sheet material of the two flat circuit bodies,
A flat circuit body connection method, wherein the pair of bonding protrusions are heat-bonded to a connection edge of the other flat circuit body.
JP2001157376A 2001-05-25 2001-05-25 Flat circuit body connection structure and flat circuit body connection method Expired - Fee Related JP3949394B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001157376A JP3949394B2 (en) 2001-05-25 2001-05-25 Flat circuit body connection structure and flat circuit body connection method

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Application Number Priority Date Filing Date Title
JP2001157376A JP3949394B2 (en) 2001-05-25 2001-05-25 Flat circuit body connection structure and flat circuit body connection method

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DE102012000080A1 (en) * 2012-01-04 2013-07-04 Phoenix Contact Gmbh & Co. Kg Electric clamp connector for electrical contacting of electrical conductors of electrical lead pieces, has conductive bridge which electrically connects conductive pins that are bendable for establishing clip connection
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