JP2017068984A

JP2017068984A - Flat cable with connection member and manufacturing method thereof

Info

Publication number: JP2017068984A
Application number: JP2015191843A
Authority: JP
Inventors: 剛平川; Takeshi Hirakawa; 茂彰勝又; Shigeaki Katsumata; 小山　恵司; Keiji Koyama; 恵司小山; 三夫大嶋; Mitsuo Oshima; 一道東川; Kazumichi Higashikawa
Original assignee: Sumitomo Electric Industries Ltd
Current assignee: Sumitomo Electric Industries Ltd
Priority date: 2015-09-29
Filing date: 2015-09-29
Publication date: 2017-04-06

Abstract

PROBLEM TO BE SOLVED: To provide a flat cable with a connection member in which deterioration of a resin member around a rectangular conductor and a connection conductor to be soldered is suppressed.SOLUTION: There is provided a flat cable with a connection member 1 comprising a flat cable 10 including a rectangular conductor 2 and insulation films 3 and 4 and a connection member 20 having a base material 22 and a connection conductor 23. An end part 2a of the rectangular conductor 2 protrudes from end parts 3a and 4a of the insulation films 3 and 4. An end part 23a of the connection conductor 23 protrudes from an end part 22a of the base material 22. The end part 2a of the rectangular conductor 2 and the end part 23a of the connection conductor 23 are adhered by solder. Protection films 41 and 42 are bonded together to the end part 2a of the rectangular conductor 2 and the end part 23a of the connection conductor 23.SELECTED DRAWING: Figure 3

Description

本発明は、電子機器などの配線に用いられる接続部材付きフラットケーブルおよびその製造方法に関する。 The present invention relates to a flat cable with a connecting member used for wiring of an electronic device or the like and a method for manufacturing the same.

高密度の配線が可能なフラットケーブルは、所定の間隔を隔てて配列された複数の錫メッキ軟銅箔からなる平角導体と、平角導体を両面から挟むように一体的に固定する絶縁フィルムとを有している。このようなフラットケーブルの端部に接続部材が貼り付けられた接続部材付きフラットケーブルが知られている（例えば、特許文献１参照）。 A flat cable capable of high-density wiring has a flat conductor made of a plurality of tin-plated annealed copper foils arranged at a predetermined interval, and an insulating film that integrally fixes the flat conductor so as to be sandwiched from both sides. doing. A flat cable with a connecting member in which a connecting member is attached to the end of such a flat cable is known (for example, see Patent Document 1).

特開２０１５−２０３３号公報Japanese Patent Laid-Open No. 2015-2033

ところで、フラットケーブルの端部に貼り付けられる接続部材は、基材と、基材に設けられた接続導体とを有している。この接続部材の接続導体は、ハンダによって平角導体と接続されている。
平角導体と接続導体とをハンダ付けする際に、平角導体と接続導体が熱せられるため、この周囲の樹脂製の絶縁フィルムおよび基材が劣化してしまうことがあった。この樹脂部材の劣化は、低温ハンダを用いても生じてしまうことがあった。 By the way, the connection member affixed on the edge part of a flat cable has a base material and the connection conductor provided in the base material. The connection conductor of the connection member is connected to the flat conductor by solder.
When the flat conductor and the connecting conductor are soldered, the flat conductor and the connecting conductor are heated, so that the surrounding resin insulating film and base material may be deteriorated. This deterioration of the resin member may occur even when low-temperature solder is used.

そこで本発明は、ハンダ付けされる平角導体と接続導体の周囲の樹脂部材の劣化が抑制された接続部材付きフラットケーブルおよびその製造方法を提供する。 Therefore, the present invention provides a flat cable with a connection member in which deterioration of a resin member around the flat conductor and the connection conductor to be soldered is suppressed, and a method for manufacturing the same.

本発明によれば、
平面状に配列された複数本の平角導体と、前記平角導体の配列面の両面から貼り合わされた絶縁フィルムと、を含むフラットケーブルと、
基材と、前記基材の一方の面に並列されて前記基材に貼られている複数本の接続導体と、を有する接続部材と、を備え、
前記平角導体の長手方向の少なくとも一方の端部は、前記絶縁フィルムの端部から突き出ており、
前記接続導体の長手方向の少なくとも一方の端部は、前記基材の端部から突き出ており、
前記絶縁フィルムの前記端部から突き出た前記平角導体の前記端部と、前記基材の前記端部から突き出た前記接続導体の前記端部とが、ハンダで接着されており、
前記ハンダで接着された前記平角導体の前記端部と前記接続導体の前記端部には、前記接続導体の一部が露出された状態で、前記配列面の両面から保護フィルムが貼り合わされており、
前記接続導体の一部が露出されている、接続部材付きフラットケーブルが提供される。 According to the present invention,
A flat cable including a plurality of flat conductors arranged in a plane and an insulating film bonded from both surfaces of the flat conductor arrangement;
A connection member having a base material, and a plurality of connection conductors attached to the base material in parallel with one surface of the base material,
At least one end in the longitudinal direction of the flat conductor protrudes from the end of the insulating film,
At least one end in the longitudinal direction of the connection conductor protrudes from the end of the base material,
The end portion of the rectangular conductor protruding from the end portion of the insulating film and the end portion of the connecting conductor protruding from the end portion of the base material are bonded with solder,
Protective films are pasted from both sides of the arrangement surface to the end portion of the rectangular conductor bonded with the solder and the end portion of the connection conductor with a part of the connection conductor exposed. ,
There is provided a flat cable with a connecting member, wherein a part of the connecting conductor is exposed.

また、本発明によれば、
フラットケーブルに接続部材を貼り付ける接続部材付きフラットケーブルの製造方法であって、
前記フラットケーブルは、平面状に配列された複数本の平角導体と、前記平角導体の配列面の両面から貼り合わされた絶縁フィルムとからなり、
前記平角導体の少なくとも一方の端部を前記絶縁フィルムの端部から突き出させ、
前記接続部材は、複数の接続導体が基材の一方の面に並列して貼られたものであり、前記接続導体の少なくとも一方の端部を前記基材の端部から突き出させ、
前記絶縁フィルムの前記端部から突き出た前記平角導体の前記端部と、前記基材の端部から突き出た前記接続導体の前記端部とをハンダで接着し、
互いにハンダで接着された前記平角導体の前記端部と前記接続導体の前記端部に、前記配列面の両面から保護フィルムを貼り合せ、かつ前記接続導体の一部を露出させる、接続部材付きフラットケーブルの製造方法が提供される。 Moreover, according to the present invention,
A method of manufacturing a flat cable with a connecting member for attaching a connecting member to the flat cable,
The flat cable is composed of a plurality of flat conductors arranged in a plane, and an insulating film bonded from both sides of the flat conductor arrangement surface,
Projecting at least one end of the rectangular conductor from the end of the insulating film;
The connection member is a member in which a plurality of connection conductors are pasted in parallel on one surface of the base material, and at least one end of the connection conductor protrudes from the end of the base material.
Bonding the end of the rectangular conductor protruding from the end of the insulating film and the end of the connecting conductor protruding from the end of the base with solder,
A flat with a connecting member, wherein a protective film is bonded from both sides of the array surface to the end of the flat conductor and the end of the connecting conductor that are bonded to each other with solder, and a part of the connecting conductor is exposed. A method for manufacturing a cable is provided.

本発明によれば、平角導体と接続導体の周囲の樹脂部材の劣化が抑制された接続部材付きフラットケーブルおよびその製造方法が提供される。 ADVANTAGE OF THE INVENTION According to this invention, the flat cable with a connection member in which deterioration of the resin member around a flat conductor and a connection conductor was suppressed, and its manufacturing method are provided.

本発明の実施形態に係る接続部材付きフラットケーブルを示す平面図である。It is a top view which shows the flat cable with a connection member which concerns on embodiment of this invention. 接続部材付きフラットケーブルの側断面図である。It is a sectional side view of a flat cable with a connection member. 図２の一部拡大図である。FIG. 3 is a partially enlarged view of FIG. 2. フラットケーブルの製造方法を示す斜視図である。It is a perspective view which shows the manufacturing method of a flat cable. 長尺フラットケーブルを示す上面図である。It is a top view which shows a long flat cable. 接続部材付きフラットケーブルの製造方法を示す断面図である。It is sectional drawing which shows the manufacturing method of the flat cable with a connection member. 本発明の変形例１に係る接続部材付きフラットケーブルを示す図である。It is a figure which shows the flat cable with a connection member which concerns on the modification 1 of this invention. 本発明の変形例２に係る接続部材付きフラットケーブルを示す図である。It is a figure which shows the flat cable with a connection member which concerns on the modification 2 of this invention.

〈本発明の実施形態の概要〉
最初に本発明の実施形態の概要を説明する。
本発明にかかる接続部材付きフラットケーブルの一実施形態は、
（１）平面状に配列された複数本の平角導体と、前記平角導体の配列面の両面から貼り合わされた絶縁フィルムと、を含むフラットケーブルと、
基材と、前記基材の一方の面に並列されて前記基材に貼られている複数本の接続導体と、を有する接続部材と、を備え、
前記平角導体の長手方向の少なくとも一方の端部は、前記絶縁フィルムの端部から突き出ており、
前記接続導体の長手方向の少なくとも一方の端部は、前記基材の端部から突き出ており、
前記絶縁フィルムの前記端部から突き出た前記平角導体の前記端部と、前記基材の前記端部から突き出た前記接続導体の前記端部とが、ハンダで接着されており、
前記ハンダで接着された前記平角導体の前記端部と前記接続導体の前記端部には、前記配列面の両面から保護フィルムが貼り合わされており、
前記接続導体の一部が露出されている。 <Outline of Embodiment of the Present Invention>
First, an outline of an embodiment of the present invention will be described.
One embodiment of the flat cable with a connecting member according to the present invention is:
(1) A flat cable including a plurality of flat conductors arranged in a plane, and an insulating film bonded from both surfaces of the flat conductor arrangement surface;
A connection member having a base material, and a plurality of connection conductors attached to the base material in parallel with one surface of the base material,
At least one end in the longitudinal direction of the flat conductor protrudes from the end of the insulating film,
At least one end in the longitudinal direction of the connection conductor protrudes from the end of the base material,
The end portion of the rectangular conductor protruding from the end portion of the insulating film and the end portion of the connecting conductor protruding from the end portion of the base material are bonded with solder,
A protective film is bonded from both sides of the array surface to the end portion of the flat conductor and the end portion of the connecting conductor bonded with the solder,
A part of the connection conductor is exposed.

上記実施形態に係る接続部材付きフラットケーブルによれば、平角導体と接続導体とをハンダ付けする際に、加熱される部位が絶縁フィルムや基材に接していないため、絶縁フィルムや基材といった樹脂部材が高温に曝されない。このため、ハンダ付けの際に、平角導体と接続導体の周囲の樹脂部材が熱により劣化することを抑制できる。 According to the flat cable with the connecting member according to the embodiment, when the flat conductor and the connecting conductor are soldered, since the heated portion is not in contact with the insulating film or the base material, the resin such as the insulating film or the base material is used. The member is not exposed to high temperatures. For this reason, at the time of soldering, it can suppress that the resin member around a flat conductor and a connection conductor deteriorates with heat.

（２）上記接続部材付きフラットケーブルにおいて、
前記基材に貼り合わされている前記保護フィルムに補強板が貼り合わされていてもよい。
上記構成の接続部材付きフラットケーブルによれば、補強板を設けることにより、接続部材付きフラットケーブルの端部の曲げ剛性が高まり、電子機器などと接続しやすくなる。 (2) In the flat cable with a connecting member,
A reinforcing plate may be bonded to the protective film that is bonded to the base material.
According to the flat cable with a connection member having the above-described configuration, by providing the reinforcing plate, the bending rigidity of the end portion of the flat cable with the connection member is increased, and it is easy to connect to an electronic device or the like.

（３）上記接続部材付きフラットケーブルにおいて、
前記基材に貼り合わされる保護フィルムと前記平角導体と前記接続導体との隙間に樹脂が充填されていてもよい。
上記構成の接続部材付きフラットケーブルによれば、この樹脂が、平角導体の端部同士の間、接続導体の端部同士の間を埋めることにより、互いに電気的に接触することを防止できる。また、この樹脂により、ハンダ付けした箇所にウィスカやエレクトロケミカルマイグレーションが生じることを防止できる。この樹脂は接着剤や樹脂フィルムを使用することができる。樹脂フィルムは保護フィルムと同種または異種であってもよい。 (3) In the flat cable with a connecting member,
A resin may be filled in a gap between the protective film bonded to the base material, the flat conductor, and the connection conductor.
According to the flat cable with a connection member having the above-described configuration, the resin can be prevented from being in electrical contact with each other by filling between the ends of the flat conductors and between the ends of the connection conductors. Moreover, it can prevent that a whisker and an electrochemical migration arise in the soldered location by this resin. As this resin, an adhesive or a resin film can be used. The resin film may be the same or different from the protective film.

（４）上記接続部材付きフラットケーブルにおいて、
前記平角導体の断面積は前記接続導体の断面積と異なっていてもよい。
上記構成の接続部材付きフラットケーブルによれば、接続部材付きフラットケーブル全体としてインピーダンスの調整をしやすくなり、伝送性能を向上させやすい。 (4) In the above flat cable with connection member,
The cross-sectional area of the flat conductor may be different from the cross-sectional area of the connection conductor.
According to the flat cable with a connecting member having the above-described configuration, it becomes easy to adjust the impedance of the entire flat cable with a connecting member, and the transmission performance is easily improved.

（５）上記接続部材付きフラットケーブルにおいて、
前記絶縁フィルムの材質は前記基材の材質と異なっていてもよい。
上記構成の接続部材付きフラットケーブルによれば、様々な特性のフィルムを組み合わせることができる。 (5) In the flat cable with connection member,
The material of the insulating film may be different from the material of the base material.
According to the flat cable with a connection member having the above-described configuration, films having various characteristics can be combined.

（６）上記接続部材付きフラットケーブルにおいて、
前記絶縁フィルムは、前記平角導体の前記配列面の一方に貼り合わされた第一絶縁フィルムと、前記平角導体の前記配列面の他方に貼り合わされた第二絶縁フィルムと、を有し、
前記第一絶縁フィルムの材質は前記第二絶縁フィルムの材質と異なっていてもよい。
上記構成の接続部材付きフラットケーブルによれば、様々な特性のフィルムを組み合わせることができる。 (6) In the flat cable with connection member,
The insulating film has a first insulating film bonded to one of the array surfaces of the flat conductors, and a second insulating film bonded to the other of the array surfaces of the flat conductors,
The material of the first insulating film may be different from the material of the second insulating film.
According to the flat cable with a connection member having the above-described configuration, films having various characteristics can be combined.

（７）上記接続部材付きフラットケーブルにおいて、
前記接続部材は、前記基材と反対側において前記接続導体に貼り合わされた第三絶縁フィルムを有してもよい。
上記構成の接続部材付きフラットケーブルによれば、接続導体が配列面の両面で支持されているため、接続部材の強度が高まっている。このため、接続部材が変形しにくく、接続部材を外部機器などへ接続する際の作業性が向上されている。 (7) In the flat cable with a connecting member,
The connection member may include a third insulating film bonded to the connection conductor on the side opposite to the base material.
According to the flat cable with a connection member having the above-described configuration, the connection conductor is supported on both surfaces of the arrangement surface, so that the strength of the connection member is increased. For this reason, the connecting member is not easily deformed, and workability when connecting the connecting member to an external device or the like is improved.

（８）上記接続部材付きフラットケーブルにおいて、
前記第三絶縁フィルムの材質は前記第一絶縁フィルムまたは前記第二絶縁フィルムの材質と異なっていてもよい。
上記構成の接続部材付きフラットケーブルによれば、様々な特性のフィルムを組み合わせることができる。 (8) In the flat cable with a connecting member,
The material of the third insulating film may be different from the material of the first insulating film or the second insulating film.
According to the flat cable with a connection member having the above-described configuration, films having various characteristics can be combined.

（９）上記接続部材付きフラットケーブルにおいて、
前記第三絶縁フィルムの材質は前記基材の材質と異なっていてもよい。
上記構成の接続部材付きフラットケーブルによれば、様々な特性のフィルムを組み合わせることができる。 (9) In the flat cable with a connecting member,
The material of the third insulating film may be different from the material of the base material.
According to the flat cable with a connection member having the above-described configuration, films having various characteristics can be combined.

（１０）本発明に係る接続部材付きフラットケーブルの製造方法の一実施形態は、
フラットケーブルに接続部材を貼り付ける接続部材付きフラットケーブルの製造方法であって、
前記フラットケーブルは、平面状に配列された複数本の平角導体と、前記平角導体の配列面の両面から貼り合わされた絶縁フィルムとからなり、
前記平角導体の少なくとも一方の端部を前記絶縁フィルムの端部から突き出させ、
前記接続部材は、複数の接続導体が基材の一方の面に並列して貼られたものであり、前記接続導体の少なくとも一方の端部を前記基材の端部から突き出させ、
前記絶縁フィルムの前記端部から突き出た前記平角導体の前記端部と、前記基材の端部から突き出た前記接続導体の前記端部とをハンダで接着し、
互いにハンダで接着された前記平角導体の前記端部と前記接続導体の前記端部に、前記配列面の両面から保護フィルムを貼り合せ、かつ前記接続導体の一部を露出させる。 (10) One embodiment of the method for producing a flat cable with a connecting member according to the present invention is as follows:
A method of manufacturing a flat cable with a connecting member for attaching a connecting member to the flat cable,
The flat cable is composed of a plurality of flat conductors arranged in a plane, and an insulating film bonded from both sides of the flat conductor arrangement surface,
Projecting at least one end of the rectangular conductor from the end of the insulating film;
The connection member is a member in which a plurality of connection conductors are pasted in parallel on one surface of the base material, and at least one end of the connection conductor protrudes from the end of the base material.
Bonding the end of the rectangular conductor protruding from the end of the insulating film and the end of the connecting conductor protruding from the end of the base with solder,
A protective film is bonded to the end portion of the rectangular conductor and the end portion of the connection conductor which are bonded to each other by soldering from both sides of the arrangement surface, and a part of the connection conductor is exposed.

上記実施形態に係る接続部材付きフラットケーブルの製造方法によれば、平角導体と接続導体とをハンダ付けする際に、加熱される部位が絶縁フィルムや基材に接していないため、絶縁フィルムや基材といった樹脂部材が高温に曝されない。このため、ハンダ付けの際に、平角導体と接続導体の周囲の樹脂部材が熱により劣化することを抑制できる。 According to the method for manufacturing a flat cable with a connecting member according to the above embodiment, when the flat conductor and the connecting conductor are soldered, the heated portion is not in contact with the insulating film or the base material. Resin members such as materials are not exposed to high temperatures. For this reason, at the time of soldering, it can suppress that the resin member around a flat conductor and a connection conductor deteriorates with heat.

（１１）上記接続部材付きフラットケーブルの製造方法において、
前記基材に貼り合わされている前記保護フィルムに補強板を貼り合わせてもよい。
上記構成の接続部材付きフラットケーブルの製造方法によれば、補強板を設けることにより、フラットケーブルの端部の曲げ剛性が高まるので、電子機器などと接続しやすい接続部材付きフラットケーブルが得られる。 (11) In the method for producing the flat cable with a connecting member,
A reinforcing plate may be bonded to the protective film bonded to the base material.
According to the manufacturing method of the flat cable with a connection member having the above-described configuration, by providing the reinforcing plate, the bending rigidity of the end portion of the flat cable is increased, so that the flat cable with the connection member that can be easily connected to an electronic device or the like is obtained.

（１２）上記接続部材付きフラットケーブルの製造方法において、
前記平角導体と前記接続導体と前記保護フィルムの隙間に樹脂を充填してもよい。
上記構成の接続部材付きフラットケーブルの製造方法によれば、この樹脂が、平角導体の端部同士の間、接続導体の端部同士の間を埋めることにより、互いに電気的に接触することを防止できる。また、この樹脂により、ハンダ付けした箇所にウィスカやエレクトロケミカルマイグレーションが生じることを防止できる。この樹脂は接着剤や樹脂フィルムを使用することができる。樹脂フィルムは保護フィルムと同種または異種であってもよい。 (12) In the method for producing the flat cable with a connecting member,
You may fill resin into the clearance gap between the said flat conductor, the said connection conductor, and the said protective film.
According to the method for manufacturing a flat cable with a connecting member having the above-described configuration, the resin prevents electrical contact with each other by filling between the ends of the flat conductors and between the ends of the connecting conductors. it can. Moreover, it can prevent that a whisker and an electrochemical migration arise in the soldered location by this resin. As this resin, an adhesive or a resin film can be used. The resin film may be the same or different from the protective film.

〈本発明の実施形態の詳細〉
以下、本発明に係る接続部材付きフラットケーブルの実施の形態の例を、図面を参照して説明する。なお、本発明はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 <Details of Embodiment of the Present Invention>
Hereinafter, an example of an embodiment of a flat cable with a connecting member according to the present invention will be described with reference to the drawings. In addition, this invention is not limited to these illustrations, is shown by the claim, and intends that all the changes within the meaning and range equivalent to a claim are included.

図１は、本発明の実施形態に係る接続部材付きフラットケーブル１を示す平面図である。図２は、接続部材付きフラットケーブル１の側断面図である。
図１および図２に示すように、接続部材付きフラットケーブル１は、長手方向に延びるフラットケーブル１０と、フラットケーブル１０の少なくとも一方の端部（図示の例では両方の端部）に設けられた接続部材２０とを備えている。接続部材付きフラットケーブル１は、接続部材２０を介して電子機器と接続される。 FIG. 1 is a plan view showing a flat cable 1 with a connecting member according to an embodiment of the present invention. FIG. 2 is a side sectional view of the flat cable 1 with a connecting member.
As shown in FIGS. 1 and 2, the flat cable 1 with a connecting member is provided at a flat cable 10 extending in the longitudinal direction and at least one end (both ends in the illustrated example) of the flat cable 10. And a connecting member 20. The flat cable 1 with the connection member is connected to the electronic device via the connection member 20.

（フラットケーブル）
フラットケーブル１０は、例えば、銅または銅合金の圧延銅箔からなる複数本の平角導体２を備えている。平角導体２は、錫めっきされた軟銅箔で形成してもよい。これらの平角導体２は、錫等がメッキされたもの、メッキのないもののいずれも使用可能である。これらの平角導体２は、所定の並列ピッチで平面状に配列されている。平角導体２の配列面の両面にそれぞれ第一絶縁フィルム３と第二絶縁フィルム４が貼り合わされている。図２に示すように、第一絶縁フィルム３は配列面の上方の平角導体２に貼り合わされ、第二絶縁フィルム４は配列面の下方の平角導体２に貼り合わされている。 (Flat cable)
The flat cable 10 includes a plurality of flat rectangular conductors 2 made of, for example, rolled copper foil of copper or a copper alloy. The flat conductor 2 may be formed of a tinned soft copper foil. These flat conductors 2 can be either tin plated or unplated. These flat conductors 2 are arranged in a plane at a predetermined parallel pitch. A first insulating film 3 and a second insulating film 4 are bonded to both surfaces of the flat conductor 2 array surface, respectively. As shown in FIG. 2, the first insulating film 3 is bonded to the flat conductor 2 above the arrangement surface, and the second insulating film 4 is bonded to the flat conductor 2 below the arrangement surface.

なお、図１では平角導体２を４本有する例を示しているが、平角導体２の本数は適宜変更される。例えば、平角導体２を２〜８０本とすることもできる。また、平角導体２の幅寸法、厚さ寸法および並列ピッチは、要求される電流値等に合わせて設定される。 In addition, although the example which has the four rectangular conductors 2 is shown in FIG. 1, the number of the rectangular conductors 2 is changed suitably. For example, the number of flat rectangular conductors 2 can be 2 to 80. Moreover, the width dimension, thickness dimension, and parallel pitch of the flat conductor 2 are set in accordance with the required current value and the like.

第一絶縁フィルム３および第二絶縁フィルム４は、ポリエチレンテレフタレート、ポリエステル、ポリイミドあるいはポリフェニレンサルファイド等の樹脂から形成された基材部分とポリエステル系接着剤または難燃ポリ塩化ビニル系の絶縁性接着剤や、難燃ポリオレフィンなどからなる接着層を有している。平角導体２に対して、接着層の面を対向させて第一絶縁フィルム３と第二絶縁フィルム４が貼り合わされている。これにより、平角導体２同士が電気的に絶縁される。 The first insulating film 3 and the second insulating film 4 are made of a base material portion formed from a resin such as polyethylene terephthalate, polyester, polyimide, or polyphenylene sulfide, and a polyester-based adhesive or a flame-retardant polyvinyl chloride-based insulating adhesive. It has an adhesive layer made of flame retardant polyolefin. The first insulating film 3 and the second insulating film 4 are bonded to the flat conductor 2 with the surface of the adhesive layer facing. Thereby, the flat conductors 2 are electrically insulated from each other.

フラットケーブル１０の長手方向の少なくとも一方の端部（図示の例では両方の端部）では、平角導体２の長手方向の端部２ａが第一絶縁フィルム３の長手方向の端部３ａおよび第二絶縁フィルム４の長手方向の端部４ａよりも突き出ている。 At least one end of the flat cable 10 in the longitudinal direction (both ends in the illustrated example), the longitudinal end 2a of the flat conductor 2 is the longitudinal end 3a of the first insulating film 3 and the second end 2a. The insulating film 4 protrudes beyond the end 4a in the longitudinal direction.

（接続部材２０）
接続部材２０は、平角導体２の長手方向の少なくとも一方の端部（図示の例では両方の端部）に貼り付けられている。接続部材２０は、絶縁材から形成された基材２２と、接続導体２３とを備えている。接続導体２３は、基材２２の一方の面（図示の例では上面）上に平角導体２と同数設けられている。これらの接続導体２３は、平角導体２と略同一幅寸法で同一ピッチに配列されている。接続導体２３の長手方向の端部２３ａは、基材２２の長手方向のフラットケーブル１０に近い側の端部２２ａから突き出ている。 (Connection member 20)
The connecting member 20 is affixed to at least one end (both ends in the illustrated example) of the flat conductor 2 in the longitudinal direction. The connection member 20 includes a base material 22 formed from an insulating material and a connection conductor 23. The same number of connecting conductors 23 as the flat conductors 2 are provided on one surface (upper surface in the illustrated example) of the base material 22. These connection conductors 23 are arranged at the same pitch with substantially the same width as the flat conductor 2. The end 23 a in the longitudinal direction of the connecting conductor 23 protrudes from the end 22 a on the side of the base 22 near the flat cable 10 in the longitudinal direction.

接続導体２３は銅または銅合金の圧延銅箔からなる。また接続導体２３の表面は錫メッキあるいは金メッキされていてもよい。錫メッキあるいは金メッキが施された接続導体２３の表面に針状結晶体（ウィスカ）が発生することを確実に防止できる。 The connection conductor 23 is made of copper or a copper alloy rolled copper foil. The surface of the connection conductor 23 may be tin-plated or gold-plated. It is possible to reliably prevent the occurrence of needle-like crystals (whiskers) on the surface of the connection conductor 23 that has been subjected to tin plating or gold plating.

図３は、接続部材付きフラットケーブル１の右端部の拡大断面図である。図３に示すように、フラットケーブル１０と接続部材２０の接続箇所において、第一絶縁フィルム３の端部３ａおよび第二絶縁フィルム４の端部４ａから突き出た平角導体２の端部２ａと、基材２２の端部２２ａから突き出た接続導体２３の端部２３ａとが、ハンダで接着されている。ハンダは融点が２２０〜２４０℃のものが使用できる。低融点ハンダ（融点が１８０℃以下）のハンダを用いることもできる。前記平角導体２の断面積は前記接続導体２３の断面積と異なっていてもよい。平角導体２と接続導体２３との接続部分では、ケーブルの他の箇所と違って局所的にインピーダンスに乱れが生じやすい。導体の断面積を調整して、局所的なインピーダンスの不整合を最小にして、接続部材を含むケーブル全体で高い伝送性能を得ることができる。 FIG. 3 is an enlarged cross-sectional view of the right end portion of the flat cable 1 with a connecting member. As shown in FIG. 3, at the connection location of the flat cable 10 and the connecting member 20, the end 2 a of the flat conductor 2 protruding from the end 3 a of the first insulating film 3 and the end 4 a of the second insulating film 4, The end portion 23a of the connection conductor 23 protruding from the end portion 22a of the base material 22 is bonded with solder. A solder having a melting point of 220 to 240 ° C. can be used. Low melting point solder (melting point of 180 ° C. or lower) can also be used. The cross-sectional area of the flat conductor 2 may be different from the cross-sectional area of the connection conductor 23. Unlike the other portions of the cable, impedance is likely to be locally disturbed at the connection portion between the flat conductor 2 and the connection conductor 23. By adjusting the cross-sectional area of the conductor to minimize local impedance mismatch, high transmission performance can be obtained over the entire cable including the connecting member.

ハンダで接着された平角導体２の端部２ａと接続導体２３の端部２３ａには、第一保護フィルム４１および第二保護フィルム４２が貼り合わされている。第一保護フィルム４１は、平角導体２の配列面の上面に設けられている。第一保護フィルム４１は、第一絶縁フィルム３の上面、平角導体２の端部２ａの上面、接続導体２３の上面に跨って貼り合わされている。第一保護フィルム４１は接続導体２３が一部露出された状態で、貼られている。第一保護フィルム４１は、平角導体２の突き出た端部２ａを覆うが、第一絶縁フィルム３上に貼られていなくてもよい。第二保護フィルム４２は、平角導体２の配列面の下面に設けられている。第二保護フィルム４２は、第二絶縁フィルム４の下面、接続導体２３の端部２３ａの下面、基材２２の下面に跨って貼り合わされている。 A first protective film 41 and a second protective film 42 are bonded to the end 2a of the flat conductor 2 and the end 23a of the connecting conductor 23 which are bonded with solder. The first protective film 41 is provided on the upper surface of the arrangement surface of the flat conductors 2. The first protective film 41 is bonded across the upper surface of the first insulating film 3, the upper surface of the end 2 a of the flat conductor 2, and the upper surface of the connection conductor 23. The first protective film 41 is stuck in a state where the connection conductor 23 is partially exposed. The first protective film 41 covers the protruding end portion 2 a of the flat conductor 2, but may not be attached to the first insulating film 3. The second protective film 42 is provided on the lower surface of the arrangement surface of the rectangular conductors 2. The second protective film 42 is bonded across the lower surface of the second insulating film 4, the lower surface of the end 23 a of the connection conductor 23, and the lower surface of the base material 22.

第一保護フィルム４１および第二保護フィルム４２は、平角導体２および接続導体２３を上下方向から挟み込んで、平角導体２の端部２ａおよび接続導体２３の端部２３ａを周囲から絶縁し、さらに平角導体２の端部２ａおよび接続導体２３の端部２３ａの機械的強度を高めている。第一保護フィルム４１および第二保護フィルム４２は、第一絶縁フィルム３および第二絶縁フィルム４と同じ材質のもので構成することができる。 The first protective film 41 and the second protective film 42 sandwich the flat conductor 2 and the connecting conductor 23 from above and below, insulate the end 2a of the flat conductor 2 and the end 23a of the connecting conductor 23 from the surroundings. The mechanical strength of the end 2a of the conductor 2 and the end 23a of the connecting conductor 23 is increased. The first protective film 41 and the second protective film 42 can be made of the same material as the first insulating film 3 and the second insulating film 4.

また、図示の例においては、フラットケーブル１０の端部に補強板１４が貼り付けられている。補強板１４は、接続部材２０の基材２２に貼り合わされている第二保護フィルム４２に貼り合わされている。補強板１４は、フラットケーブル１０から接続部材２０に跨るように、第二保護フィルム４２に貼り合わされている。補強板１４は、保護フィルム４１，４２よりも厚肉の部材であり、保護フィルム４１，４２よりも曲げ剛性が高い。補強板１４は、第一保護フィルム４１および第二保護フィルム４２と同じ材料で構成することができる。補強板１４を貼る接着剤は保護フィルム４１，４２を貼る接着剤と異なってもよい。補強板１４を設けることにより、フラットケーブル１０の端部の曲げ剛性が高まり、電子機器などと接続しやすくなる。第二保護フィルム４２を省略して補強板１４をフラットケーブル１０と接続部材２０の下面に貼ってもよい。 In the illustrated example, a reinforcing plate 14 is attached to the end of the flat cable 10. The reinforcing plate 14 is bonded to a second protective film 42 that is bonded to the base material 22 of the connection member 20. The reinforcing plate 14 is bonded to the second protective film 42 so as to straddle the connecting member 20 from the flat cable 10. The reinforcing plate 14 is a thicker member than the protective films 41 and 42, and has higher bending rigidity than the protective films 41 and 42. The reinforcing plate 14 can be made of the same material as the first protective film 41 and the second protective film 42. The adhesive for sticking the reinforcing plate 14 may be different from the adhesive for sticking the protective films 41 and 42. Providing the reinforcing plate 14 increases the bending rigidity of the end portion of the flat cable 10 and facilitates connection to an electronic device or the like. You may abbreviate | omit the 2nd protective film 42 and affix the reinforcement board 14 on the lower surface of the flat cable 10 and the connection member 20. FIG.

なお、図３においては、第一保護フィルム４１が、接続導体２３の上面と、第一絶縁フィルム３の端部３ａから突き出た平角導体２の端部２ａの上面と、第一絶縁フィルム３の上面とに跨るように貼り付けられた例を示したが、本発明はこれに限られない。第一保護フィルム４１は、接続導体２３の上面の一部と、第一絶縁フィルム３の端部３ａから突き出た平角導体２の端部２ａの上面のみを覆うように構成してもよい。
また、図３においては、第二保護フィルム４２が、第二絶縁フィルム４の下面と、接続導体２３の下面と、基材２２の下面とに跨るように貼り付けられた例を示したが、本発明はこれに限られない。第二保護フィルム４２は、接続導体２３の下面のみを覆うように構成してもよい。 In FIG. 3, the first protective film 41 includes the upper surface of the connection conductor 23, the upper surface of the end 2 a of the flat conductor 2 protruding from the end 3 a of the first insulating film 3, and the first insulating film 3. Although the example pasted so that it may straddle the upper surface was shown, the present invention is not limited to this. The first protective film 41 may be configured to cover only a part of the upper surface of the connection conductor 23 and the upper surface of the end portion 2a of the flat conductor 2 protruding from the end portion 3a of the first insulating film 3.
Moreover, in FIG. 3, although the 2nd protective film 42 showed the example affixed so that the lower surface of the 2nd insulating film 4, the lower surface of the connection conductor 23, and the lower surface of the base material 22 was shown, The present invention is not limited to this. The second protective film 42 may be configured to cover only the lower surface of the connection conductor 23.

また、第一絶縁フィルム３の材質および第二絶縁フィルム４の材質は基材２２の材質と異なっていてもよい。これにより、様々な特性のフィルムを組み合わせることができる。
例えば、基材２２に弾性率の高い曲がりにくい材質を用いて、第一絶縁フィルム３や第二絶縁フィルム４に弾性率の低い曲げやすい材質を用いることができる。この場合には、しなやかで変形が自在でありながら、端部では曲がりにくく外部機器との接続作業が容易な接続部材付きフラットケーブル１が得られる。 The material of the first insulating film 3 and the material of the second insulating film 4 may be different from the material of the base material 22. Thereby, films having various characteristics can be combined.
For example, a material having a high elastic modulus that is difficult to bend can be used for the base material 22, and a bendable material having a low elastic modulus can be used for the first insulating film 3 and the second insulating film 4. In this case, it is possible to obtain the flat cable 1 with a connecting member that is flexible and can be freely deformed but is difficult to bend at the end portion and can be easily connected to an external device.

上記実施形態において、絶縁フィルムは、平角導体２の配列面の一方（上面）に貼り合わされた第一絶縁フィルム３と、平角導体２の配列面の他方（下面）に貼り合わされた第二絶縁フィルム４と、を有している。この第一絶縁フィルム３の材質は第二絶縁フィルム４の材質と異なっていてもよい。これにより、様々な特性のフィルムを組み合わせることができる。
例えば、曲がりにくい特性が求められる接続部材付きフラットケーブル１において、第一絶縁フィルム３を高い弾性率の樹脂で構成し、第一絶縁フィルム３で十分な曲がりにくい特性が得られる場合には、第二絶縁フィルム４をそれよりも安価で低い弾性率の樹脂で構成することができる。これにより、曲がりにくい接続部材付きフラットケーブル１を安価に提供できる。 In the said embodiment, an insulating film is the 1st insulating film 3 affixed on one (upper surface) of the arrangement surface of the flat conductor 2, and the 2nd insulating film affixed on the other (lower surface) of the arrangement surface of the flat conductor 2 4. The material of the first insulating film 3 may be different from the material of the second insulating film 4. Thereby, films having various characteristics can be combined.
For example, in the flat cable 1 with a connecting member that is required to have a characteristic that is difficult to bend, when the first insulating film 3 is made of a resin having a high elastic modulus and the first insulating film 3 has a characteristic that is difficult to bend, The two insulating films 4 can be made of a resin having a lower elastic modulus at a lower cost. Thereby, the flat cable 1 with a connection member which is hard to bend can be provided at low cost.

＜フラットケーブルの製造方法＞
次に、上記構造の接続部材付きフラットケーブル１を製造する方法について説明する。接続部材付きフラットケーブル１は、フラットケーブル１０と接続部材２０を別々に作製した後に、両者を貼り合せることにより製造される。 <Flat cable manufacturing method>
Next, a method for manufacturing the flat cable 1 with the connection member having the above structure will be described. The flat cable 1 with the connecting member is manufactured by separately manufacturing the flat cable 10 and the connecting member 20 and then bonding them together.

図４は、フラットケーブル１０の製造方法を示す斜視図である。図５は、長尺フラットケーブル１０の平面図である。図４に示すように、それぞれ長尺の平角導体２が巻き取られている複数のリール３０から平角導体２を送り出して所定の並列ピッチで同一平面状に配列する。そして、これらの平角導体２の配列面の表裏に、リール３１から長尺の第一絶縁フィルム３と第二絶縁フィルム４を送り出してヒータローラ３２間に通し、第一絶縁フィルム３と第二絶縁フィルム４を加熱すると同時に圧着して貼り合わせて長尺フラットケーブル１０ａとする。この長尺フラットケーブル１０ａを巻き取りローラ３３に巻き取る。第一絶縁フィルム３および第二絶縁フィルム４の長手方向の一部には、窓部３５が形成されている。 FIG. 4 is a perspective view showing a method for manufacturing the flat cable 10. FIG. 5 is a plan view of the long flat cable 10. As shown in FIG. 4, the rectangular conductors 2 are sent out from a plurality of reels 30 around which the long rectangular conductors 2 are wound, and are arranged in the same plane at a predetermined parallel pitch. And the long 1st insulating film 3 and the 2nd insulating film 4 are sent out from the reel 31 to the front and back of the arrangement surface of these flat conductors 2, and it passes between the heater rollers 32, and the 1st insulating film 3 and the 2nd insulating film 4 is heated and pressure-bonded at the same time and bonded to obtain a long flat cable 10a. The long flat cable 10 a is wound around the winding roller 33. A window portion 35 is formed in a part of the first insulating film 3 and the second insulating film 4 in the longitudinal direction.

図５に示すように、長尺フラットケーブル１０ａを鎖線Ｃ１で示す位置で切断し、第一絶縁フィルム３および第二絶縁フィルム４の幅方向両端の余剰部分（耳と呼ばれる部分）を除去する。これにより、窓部３５の幅方向両端部で第一絶縁フィルム３と第二絶縁フィルム４とが長手方向に繋がった箇所が除去される。この工程は、第一絶縁フィルム３と第二絶縁フィルム４を貼り合わせる工程と同じとしてもよく、別工程としてもよい。 As shown in FIG. 5, the long flat cable 10 a is cut at a position indicated by a chain line C 1, and excess portions (portions called ears) at both ends in the width direction of the first insulating film 3 and the second insulating film 4 are removed. Thereby, the location where the 1st insulating film 3 and the 2nd insulating film 4 were connected to the longitudinal direction in the width direction both ends of the window part 35 is removed. This step may be the same as the step of bonding the first insulating film 3 and the second insulating film 4 or may be a separate step.

さらに、長尺フラットケーブル１０ａを、窓部３５を通る鎖線Ｃ２で示す位置で切断する。これにより、長尺フラットケーブル１０ａは所定の長さに切り分けられ、長手方向の両端で平角導体２の端部２ａが第一絶縁フィルム３の端部３ａおよび第二絶縁フィルム４の端部４ａから突き出したフラットケーブル１０が得られる。 Further, the long flat cable 10 a is cut at a position indicated by a chain line C 2 passing through the window portion 35. Thereby, the long flat cable 10a is cut into a predetermined length, and the end 2a of the flat conductor 2 is separated from the end 3a of the first insulating film 3 and the end 4a of the second insulating film 4 at both ends in the longitudinal direction. The protruding flat cable 10 is obtained.

さらに、図示しないが、基材２２上に、複数本の接続導体２３を平面状に配列させ、接続導体２３の長手方向の端部が基材２２の長手方向の端部から突き出した接続部材２０を作製する。 Further, although not shown, a plurality of connection conductors 23 are arranged in a planar shape on the base material 22, and the connection member 20 in which the end portion in the longitudinal direction of the connection conductor 23 protrudes from the end portion in the longitudinal direction of the base material 22. Is made.

図６は、接続部材２０をフラットケーブル１０に接続する工程を示す断面図である。まず、図６の（ａ）に示すように、フラットケーブル１０と、接続部材２０を用意する。 FIG. 6 is a cross-sectional view illustrating a process of connecting the connecting member 20 to the flat cable 10. First, as shown in FIG. 6A, a flat cable 10 and a connecting member 20 are prepared.

次に、図６の（ｂ）に示すように、絶縁フィルム３，４の端部３ａ，４ａから突き出た平角導体２の端部２ａと、接続部材２０の基材２２の端部２２ａから突き出た接続導体２３の端部２３ａとを、ハンダで接着する。平角導体２と接続導体２３の少なくとも一方をハンダ浴に浸けてハンダを付着させることが好ましい。平角導体２と接続導体２３の間に固形またはペースト状のハンダを挟んでもよい。 Next, as shown in FIG. 6 (b), the end 2 a of the flat conductor 2 protruding from the ends 3 a and 4 a of the insulating films 3 and 4 and the end 22 a of the base member 22 of the connecting member 20 are protruded. The end 23a of the connecting conductor 23 is bonded with solder. It is preferable to attach solder by immersing at least one of the flat conductor 2 and the connecting conductor 23 in a solder bath. Solid or paste solder may be sandwiched between the flat conductor 2 and the connecting conductor 23.

平角導体２の端部２ａおよび接続導体２３の端部２３ａのうち、長手方向の１ｍｍ程度の部位をパルスヒートツールＰで加熱しながら押さえつけて付着したハンダを溶融させ、その後に冷却してハンダを固化させることにより、平角導体２と接続導体２３をハンダ付けすることができる。樹脂製の部材に熱が伝わりにくいように、加熱する部位は、第一絶縁フィルム３の端部３ａ、第二絶縁フィルム４の端部４ａ、基材２２の端部２２ａから離間した部位とすることが好ましい。 Of the end portion 2a of the flat conductor 2 and the end portion 23a of the connecting conductor 23, a portion of about 1 mm in the longitudinal direction is pressed while being heated by the pulse heat tool P to melt the attached solder, and then cooled to remove the solder. By solidifying, the flat conductor 2 and the connection conductor 23 can be soldered. The portions to be heated are separated from the end portion 3a of the first insulating film 3, the end portion 4a of the second insulating film 4, and the end portion 22a of the base material 22 so that heat is not easily transmitted to the resin member. It is preferable.

次に、図６の（ｃ）に示すように、互いにハンダで接着された平角導体２と接続導体２３に、配列面の両面から第一保護フィルム４１および第二保護フィルム４２を貼り合せる。 Next, as shown in FIG. 6C, the first protective film 41 and the second protective film 42 are bonded to the flat conductor 2 and the connecting conductor 23 which are bonded to each other by soldering from both sides of the arrangement surface.

さらに、図６の（ｄ）に示すように、接続部材２０の基材２２に貼り合わされている第二保護フィルム４２に補強板１４を貼り合せる。補強板１４には、第二保護フィルム４２に良好に接着できる接着剤が塗布されていることが好ましい。
以上の工程により、図１や図２に示した、接続部材付きフラットケーブル１が完成する。 Further, as shown in FIG. 6D, the reinforcing plate 14 is bonded to the second protective film 42 bonded to the base material 22 of the connection member 20. The reinforcing plate 14 is preferably coated with an adhesive that can adhere well to the second protective film 42.
The flat cable 1 with a connecting member shown in FIGS. 1 and 2 is completed through the above steps.

本実施形態に係る接続部材付きフラットケーブル１およびその製造方法によれば、図６の（ｂ）に示したように、平角導体２と接続導体２３とをハンダ付けする際に、加熱される部位が第一絶縁フィルム３、第二絶縁フィルム４、基材２２に接していないため、第一絶縁フィルム３、第二絶縁フィルム４、基材２２といった樹脂部材が高温に曝されない。このため、ハンダ付けの際に、平角導体２と接続導体２３の周囲の樹脂部材が熱により劣化することを抑制できる。 According to the flat cable 1 with a connecting member and the method for manufacturing the same according to the present embodiment, as shown in FIG. 6B, the portion to be heated when soldering the flat conductor 2 and the connecting conductor 23. However, since the first insulating film 3, the second insulating film 4, and the base material 22 are not in contact with each other, the resin members such as the first insulating film 3, the second insulating film 4, and the base material 22 are not exposed to high temperatures. For this reason, at the time of soldering, it can suppress that the resin member around the flat conductor 2 and the connection conductor 23 deteriorates with heat.

図７は、本発明の変形例１に係る接続部材付きフラットケーブル１Ａの製造方法を示す断面図である。本変形例においては、図７の（ａ）に示すように、第二保護フィルム４２Ａは、第一保護フィルム４１より厚肉の基材フィルム４３上に、接着層４４が設けられている。この第二保護フィルム４２Ａの接着層４４を、第二絶縁フィルム４、接続導体２３の端部２３ａ、基材２２を跨るように貼り付ける。 FIG. 7: is sectional drawing which shows the manufacturing method of 1A of flat cables with a connection member which concerns on the modification 1 of this invention. In the present modification, as shown in FIG. 7A, the second protective film 42 A is provided with an adhesive layer 44 on a base film 43 that is thicker than the first protective film 41. The adhesive layer 44 of the second protective film 42 A is pasted so as to straddle the second insulating film 4, the end 23 a of the connection conductor 23, and the base material 22.

本変形例に係る接続部材付きフラットケーブル１Ａによれば、第二保護フィルム４２Ａの基材フィルム４３が第一保護フィルム４１よりも厚いフィルムで構成されており、曲げ剛性が高められている。これにより、第二保護フィルム４２Ａが第一実施形態の補強板１４の機能を果たしている。 According to the flat cable 1A with a connecting member according to this modification, the base film 43 of the second protective film 42A is made of a film thicker than the first protective film 41, and the bending rigidity is enhanced. Thereby, 42 A of 2nd protective films have fulfill | performed the function of the reinforcement board 14 of 1st embodiment.

また、本変形例に係る接続部材付きフラットケーブル１Ａによれば、第二保護フィルム４２Ａは、基材フィルム４３上の接着層４４が、平角導体２同士の間、接続導体２３同士の間を埋めることにより、互いに電気的に接触することを防止している。この接着層４４を構成する接着剤としては、銅害で変質せず、また、電気特性（インピーダンス）を損なわないものなど、化学的および電気的に優れた特性を有することが好ましい。また、この接着剤により、ハンダ付けした箇所にウィスカやエレクトロケミカルマイグレーションが生じることを防止できる。接続導体２３の下に樹脂フィルムを当ててもよい。この樹脂フィルムも、銅害で変質せず、また、電気特性（インピーダンス）を損なわないものなど、化学的および電気的に優れた特性を有することが好ましい。 Moreover, according to the flat cable 1A with a connecting member according to this modification, the second protective film 42A has the adhesive layer 44 on the base film 43 buried between the flat conductors 2 and between the connecting conductors 23. This prevents electrical contact with each other. The adhesive constituting the adhesive layer 44 preferably has excellent chemical and electrical characteristics, such as an adhesive that does not deteriorate due to copper damage and does not impair electrical characteristics (impedance). Moreover, it can prevent that a whisker and an electrochemical migration arise in the soldered location with this adhesive agent. A resin film may be applied under the connection conductor 23. It is preferable that this resin film also has chemically and electrically excellent characteristics, such as a resin film that does not deteriorate due to copper damage and does not impair electrical characteristics (impedance).

なお、上述の実施形態においては、接続部材２０において、接続導体２３の下面に基材２２が貼り付けられて接続導体２３の上面に部材が貼り付けられていない例を説明したが、本発明はこれに限らない。 In the above-described embodiment, the example in which the base member 22 is attached to the lower surface of the connection conductor 23 and the member is not attached to the upper surface of the connection conductor 23 in the connection member 20 has been described. Not limited to this.

図８は、本発明の変形例２に係る接続部材付きフラットケーブル１Ｂの端部を拡大した側断面図である。図８に示したように、本変形例に係る接続部材付きフラットケーブル１Ｂは、フラットケーブル１０と接続部材２０Ｂを備えている。 FIG. 8 is an enlarged side sectional view of an end portion of the flat cable 1B with connection member according to the second modification of the present invention. As shown in FIG. 8, the flat cable 1B with a connecting member according to this modification includes a flat cable 10 and a connecting member 20B.

フラットケーブル１０は、平角導体２と、平角導体２の配列面の上面に貼り合わされた第一絶縁フィルム３と、平角導体２の配列面の下面に貼り合わされた第二絶縁フィルム４を備えている。フラットケーブル１０の右端部において、平角導体２の端部２ａは第一絶縁フィルム３の端部３ａおよび第二絶縁フィルム４の端部４ａから突き出ている。 The flat cable 10 includes a flat conductor 2, a first insulating film 3 bonded to the upper surface of the flat conductor 2, and a second insulating film 4 bonded to the lower surface of the flat conductor 2. . At the right end of the flat cable 10, the end 2 a of the flat conductor 2 protrudes from the end 3 a of the first insulating film 3 and the end 4 a of the second insulating film 4.

接続部材２０Ｂは、基材２２と、基材２２の一方の面に貼り合わされた接続導体２３と、基材２２と反対側において接続導体２３に貼り合わされた第三絶縁フィルム２４、補強板１４を有している。接続導体２３のフラットケーブル１０に近い側の端部２３ａは、基材２２の端部２２ａおよび第三絶縁フィルム２４の端部から突き出ている。接続導体２３のフラットケーブル１０から遠い側の端部は、第三絶縁フィルム２４から露出されている。基材２２の下面に補強板１４が貼り合わされている。 The connection member 20 B includes a base material 22, a connection conductor 23 bonded to one surface of the base material 22, a third insulating film 24 and a reinforcing plate 14 bonded to the connection conductor 23 on the side opposite to the base material 22. Have. An end 23 a of the connecting conductor 23 near the flat cable 10 protrudes from the end 22 a of the base material 22 and the end of the third insulating film 24. The end of the connecting conductor 23 on the side far from the flat cable 10 is exposed from the third insulating film 24. The reinforcing plate 14 is bonded to the lower surface of the base material 22.

第一絶縁フィルム３の端部３ａおよび第二絶縁フィルム４の端部４ａから突き出た平角導体２の端部２ａと、基材２２の端部２２ａおよび第三絶縁フィルム２４の端部から突き出た接続導体２３の端部２３ａが、ハンダ付けされている。
なお、図８に示したように、第一絶縁フィルム３の端部３ａおよび第二絶縁フィルム４の端部４ａから突き出た平角導体２の端部２ａと、基材２２の端部２２ａおよび第三絶縁フィルム２４の端部から突き出た接続導体２３の端部２３ａは、互いに完全に重なっていなくてもよい。 Projected from the end 3a of the first insulating film 3 and the end 2a of the flat conductor 2 projecting from the end 4a of the second insulating film 4, and projecting from the end 22a of the substrate 22 and the end of the third insulating film 24 The end 23a of the connection conductor 23 is soldered.
As shown in FIG. 8, the end 2 a of the flat conductor 2 protruding from the end 3 a of the first insulating film 3 and the end 4 a of the second insulating film 4, the end 22 a of the substrate 22, and the second The end portions 23a of the connection conductors 23 protruding from the end portions of the three insulating films 24 may not completely overlap each other.

ハンダ付けされた平角導体２の端部２ａと接続導体２３の端部２３ａには、上方から第一保護フィルム４１Ｂが貼り合わされている。ハンダ付けされた平角導体２の端部２ａと接続導体２３の端部２３ａには、下方から第二保護フィルム４２が貼り合わされている。図８において、第二保護フィルム４２は接着剤などの樹脂４４を介して、ハンダ付けされた平角導体２の端部２ａと接続導体２３の端部２３ａに貼り合わされている。 A first protective film 41B is bonded to the end 2a of the soldered flat rectangular conductor 2 and the end 23a of the connecting conductor 23 from above. A second protective film 42 is bonded to the end 2a of the soldered flat rectangular conductor 2 and the end 23a of the connecting conductor 23 from below. In FIG. 8, the second protective film 42 is bonded to the end 2 a of the soldered flat conductor 2 and the end 23 a of the connecting conductor 23 via a resin 44 such as an adhesive.

図８に示した接続部材付きフラットケーブル１Ｂによれば、基材２２および第三絶縁フィルム２４が、接続導体２３の両面を支持しているため、接続部材２０Ｂの強度が高まっている。このため、接続部材２０Ｂが変形しにくく、接続部材２０Ｂを外部機器などへ接続する際の作業性が向上されている。 According to the flat cable 1B with a connecting member shown in FIG. 8, since the base material 22 and the third insulating film 24 support both surfaces of the connecting conductor 23, the strength of the connecting member 20B is increased. For this reason, the connecting member 20B is not easily deformed, and the workability when connecting the connecting member 20B to an external device or the like is improved.

図８に示した接続部材付きフラットケーブル１Ｂにおいて、第三絶縁フィルム２４の材質は第一絶縁フィルム３の材質や第二絶縁フィルム４や基材２２の材質と同じでも異なっていてもよい。これにより、様々な特性のフィルムを組み合わせることができる。
例えば、基材２２や第三絶縁フィルム２４に弾性率の高い曲がりにくい材質を用いて、第一絶縁フィルム３や第二絶縁フィルム４に弾性率の低い曲げやすい材質を用いることができる。この場合には、しなやかで自在に変形が可能なケーブルでありながら、端部の接続部材２０Ｂでは曲がりにくく外部機器との接続作業が容易な接続部材付きフラットケーブル１Ｂが得られる。 In the flat cable 1B with the connecting member shown in FIG. 8, the material of the third insulating film 24 may be the same as or different from the material of the first insulating film 3, the material of the second insulating film 4 and the base material 22. Thereby, films having various characteristics can be combined.
For example, the base material 22 and the third insulating film 24 can be made of a material having a high elastic modulus and hardly bent, and the first insulating film 3 and the second insulating film 4 can be made of a material having a low elastic modulus and being easily bent. In this case, a flat cable 1B with a connecting member that is flexible and can be freely deformed but is not easily bent by the connecting member 20B at the end and can be easily connected to an external device is obtained.

１，１Ａ，１Ｂ：接続部材付きフラットケーブル
２：平角導体
２ａ：（平角導体の）端部
３：第一絶縁フィルム（絶縁フィルム）
３ａ：（第一絶縁フィルムの）端部
４：第二絶縁フィルム（絶縁フィルム）
４ａ：（第二絶縁フィルムの）端部
１０：フラットケーブル
１４：補強板
２０，２０Ｂ：接続部材
２２：基材
２２ａ：（基材の）端部
２３：接続導体
２３ａ：（接続導体の）端部
２４：第三絶縁フィルム
４１，４１Ｂ：第一保護フィルム（保護フィルム）
４２，４２Ａ：第二保護フィルム（保護フィルム） 1, 1A, 1B: Flat cable with connecting member 2: Flat conductor 2a: End of flat conductor 3: First insulating film (insulating film)
3a: End portion (of the first insulating film) 4: Second insulating film (insulating film)
4a: End part (of the second insulating film) 10: Flat cable 14: Reinforcing plate 20, 20B: Connection member 22: Base material 22a: End part (of base material) 23: Connection conductor 23a: End of (connection conductor) Part 24: third insulating film 41, 41B: first protective film (protective film)
42, 42A: second protective film (protective film)

Claims

A flat cable including a plurality of flat conductors arranged in a plane and an insulating film bonded from both surfaces of the flat conductor arrangement;
A connection member having a base material, and a plurality of connection conductors attached to the base material in parallel with one surface of the base material,
At least one end in the longitudinal direction of the flat conductor protrudes from the end of the insulating film,
At least one end in the longitudinal direction of the connection conductor protrudes from the end of the base material,
The end portion of the rectangular conductor protruding from the end portion of the insulating film and the end portion of the connecting conductor protruding from the end portion of the base material are bonded with solder,
A protective film is bonded from both sides of the array surface to the end portion of the flat conductor and the end portion of the connecting conductor bonded with the solder,
A flat cable with a connection member, wherein a part of the connection conductor is exposed.

The flat cable with a connection member according to claim 1, wherein a reinforcing plate is bonded to the protective film bonded to the base material.

The flat cable with a connection member according to claim 1, wherein a resin is filled in a gap between the protective film to be bonded to the base material, the flat conductor, and the connection conductor.

The flat cable with a connection member according to any one of claims 1 to 3, wherein a cross-sectional area of the flat conductor is different from a cross-sectional area of the connection conductor.

The flat cable with a connection member according to any one of claims 1 to 4, wherein a material of the insulating film is different from a material of the base material.

The insulating film has a first insulating film bonded to one of the array surfaces of the flat conductors, and a second insulating film bonded to the other of the array surfaces of the flat conductors,
The flat cable with a connection member according to any one of claims 1 to 5, wherein a material of the first insulating film is different from a material of the second insulating film.

The said connection member is a flat cable with a connection member as described in any one of Claim 1 to 6 which has a 3rd insulating film bonded together by the said connection conductor on the opposite side to the said base material.

The flat cable with a connecting member according to claim 7, wherein a material of the third insulating film is different from a material of the first insulating film or the second insulating film.

The flat cable with a connecting member according to claim 7 or 8, wherein a material of the third insulating film is different from a material of the base material.

A method of manufacturing a flat cable with a connecting member for attaching a connecting member to the flat cable,
The flat cable is composed of a plurality of flat conductors arranged in a plane, and an insulating film bonded from both sides of the flat conductor arrangement surface,
Projecting at least one end of the rectangular conductor from the end of the insulating film;
The connection member is a member in which a plurality of connection conductors are pasted in parallel on one surface of the base material, and at least one end of the connection conductor protrudes from the end of the base material.
Bonding the end of the rectangular conductor protruding from the end of the insulating film and the end of the connecting conductor protruding from the end of the base with solder,
A flat with a connecting member, wherein a protective film is bonded from both sides of the array surface to the end of the flat conductor and the end of the connecting conductor that are bonded to each other with solder, and a part of the connecting conductor is exposed. Cable manufacturing method.

The manufacturing method of the flat cable with a connection member of Claim 10 which bonds a reinforcement board to the said protective film currently bonded by the said base material.

The manufacturing method of the flat cable with a connection member of Claim 10 or 11 which fills resin in the clearance gap between the said flat conductor, the said connection conductor, and the said protective film.