JP4251940B2 - Flat cable - Google Patents

Flat cable Download PDF

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JP4251940B2
JP4251940B2 JP2003290283A JP2003290283A JP4251940B2 JP 4251940 B2 JP4251940 B2 JP 4251940B2 JP 2003290283 A JP2003290283 A JP 2003290283A JP 2003290283 A JP2003290283 A JP 2003290283A JP 4251940 B2 JP4251940 B2 JP 4251940B2
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conductor
tip
film
flat
flat cable
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JP2005063744A (en
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学 永野
啓一 田中
晋 大貫
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Sumitomo Electric Industries Ltd
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Description

本発明は、パソコン等の情報機器、AV機器や事務機器等の電子機器用の内部配線、プリンタ、複写機、CDプレーヤ等の摺動部分の配線に用いるようなフラットケーブルに関する。   The present invention relates to a flat cable used for internal wiring for information equipment such as a personal computer, electronic equipment such as AV equipment and office equipment, and wiring for sliding portions of printers, copying machines, CD players, and the like.

近年の各種の電子、電気機器は、小形、軽量、高機能化が求められ、これらの要求を満たすものとして、複数本の導体を平行に並べて絶縁フィルム等で一体化したフレキシブルなフラットケーブルが多用されている。このフラットケーブルとして、形状的には平型導体を用いたもの、丸線導体を用いたものがあり、機能的にはシールド機能を備えたものやワイヤハーネス機能等を備えたものがある。   In recent years, various electronic and electrical devices are required to be small, light, and highly functional. To meet these requirements, flexible flat cables are often used in which multiple conductors are arranged in parallel and integrated with an insulating film. Has been. As the flat cable, there are a shape using a flat conductor and a shape using a round wire conductor, and a function having a shield function and a function having a wire harness function.

図9は、従来のフラットケーブルの端末形状を説明する図で、図9(A)はフラットケーブルの断面を示す図、図9(B)は端末部の形状を示す図、図9(C)はコネクタとの接続を示す図ある。図中、1は端末部、1aは先端部、2は平型導体、3a,3bは絶縁フィルム、3cは接着剤、4は補強フィルム、5はコネクタ、6は接触片、6aは接触部、6bはテーパ端を示す。   9A and 9B are diagrams for explaining the terminal shape of a conventional flat cable. FIG. 9A is a diagram showing a cross section of the flat cable, FIG. 9B is a diagram showing the shape of the terminal part, and FIG. These are figures which show the connection with a connector. In the figure, 1 is a terminal portion, 1a is a tip portion, 2 is a flat conductor, 3a and 3b are insulating films, 3c is an adhesive, 4 is a reinforcing film, 5 is a connector, 6 is a contact piece, 6a is a contact portion, 6b shows a taper end.

フラットケーブルは、図9(A)に示すように、例えば、複数本の平型導体2を平行に並べ、上下から絶縁フィルム3a,3bで挟んで接着一体化して形成されている(例えば、特許文献1参照)。また、図9(B)に示すようにフラットケーブルの端末部1は、例えば、一方のフィルム面側で平型導体2の端部が露出され、反対のフィルム面側にポリエステル等からなる厚めの補強フィルム4が貼り付けられ、コネクタ5への挿入接続が可能にされている(例えば、特許文献2参照)。絶縁フィルム3a,3bは、通常、ポリエステルフィルムが用いられ、そのフィルム内面に熱可塑性樹脂又は熱硬化性樹脂の各種接着剤3cを塗布して積層される。   As shown in FIG. 9A, the flat cable is formed by, for example, arranging a plurality of flat conductors 2 in parallel and adhering them together from above and below with insulating films 3a and 3b (for example, patents). Reference 1). Further, as shown in FIG. 9B, the end portion 1 of the flat cable has, for example, a thick conductor made of polyester or the like, with the end portion of the flat conductor 2 exposed on one film surface side, and the opposite film surface side. The reinforcing film 4 is affixed, and the insertion connection to the connector 5 is enabled (for example, refer patent document 2). As the insulating films 3a and 3b, a polyester film is usually used, and various adhesives 3c of a thermoplastic resin or a thermosetting resin are applied and laminated on the inner surface of the film.

また、平型導体2は、特許文献1に開示のように、例えば、厚さ0.035μm、幅0.8mm程度の錫メッキ軟銅が用いられる。この平型導体2は、所定のピッチ(例えば、1.25mm程度)で、絶縁フィルム3a,3b間で平行に配列されて樹脂接着剤3cで電気的に絶縁される。フラットケーブルの主体部分の厚みは、0.12mm前後で、全体として柔軟性と摺動性を備えたフレキシブルなフラットケーブルとして形成される。   Further, as disclosed in Patent Document 1, for example, tin-plated annealed copper having a thickness of about 0.035 μm and a width of about 0.8 mm is used for the flat conductor 2. The flat conductor 2 is arranged in parallel between the insulating films 3a and 3b at a predetermined pitch (for example, about 1.25 mm) and is electrically insulated by the resin adhesive 3c. The main portion of the flat cable has a thickness of about 0.12 mm, and is formed as a flexible flat cable having flexibility and slidability as a whole.

上述のフラットケーブルは、例えば、図10に示すような方法で作製される。図中、7はラミネートローラ、8はスリッタ、9はカッター、10a,10bはテープ状フィルム、11は開口穴を示す。その他の符号は図9と同じ符号を用いることにより説明を省略する。図10(A)に示すように、フラットケーブルの絶縁フィルム3a,3bは、内側に接着剤層を有するテープ状フィルム10a,10bの形態で連続供給される。一方のテープ状フィルム10aには、例えば、予め開口穴11が所定の間隔で形成され、他方のテープ状フィルム10bには、補強フィルム4が開口穴11と一致するように予め貼り付けられている。   The flat cable described above is produced by a method as shown in FIG. 10, for example. In the figure, 7 is a laminating roller, 8 is a slitter, 9 is a cutter, 10a and 10b are tape-like films, and 11 is an opening hole. Description of other reference numerals is omitted by using the same reference numerals as those in FIG. As shown in FIG. 10A, the insulating films 3a and 3b of the flat cable are continuously supplied in the form of tape-like films 10a and 10b having an adhesive layer on the inside. For example, the opening holes 11 are formed in the tape-shaped film 10 a in advance at a predetermined interval, and the reinforcing film 4 is pasted in advance on the other tape-shaped film 10 b so as to coincide with the opening holes 11. .

線条の形態で連続供給される多数本の平型導体2は、テープ状フィルム10a,10bで両面から挟まれ、ラミネートローラ7により接着一体化されて巻き取られる。この巻き取り時に、スリッタ8により長手方向に沿って分断され、所定の導体本数を有する長尺のフラットケーブルの形態で一旦巻き取られる。この後、図10(B)に示すように、開口穴11の中心で長尺のフラットケーブルをカッター9で切断することにより、図9に示すような一方のフィルム面で平型導体2の端部が露出され、反対側のフィルム面に補強フィルム4が貼り付けられた端末部1を備えたフラットケーブルが得られる。
特許第2870348号公報 特開2001−236841号公報(図1参照)
A large number of flat conductors 2 that are continuously supplied in the form of filaments are sandwiched from both sides by tape-like films 10 a and 10 b, bonded and integrated by a laminating roller 7, and wound. At the time of winding, it is cut along the longitudinal direction by the slitter 8 and is once wound up in the form of a long flat cable having a predetermined number of conductors. Thereafter, as shown in FIG. 10 (B), a long flat cable is cut with a cutter 9 at the center of the opening hole 11, so that the end of the flat conductor 2 on one film surface as shown in FIG. The flat cable provided with the terminal part 1 by which the part was exposed and the reinforcement film 4 was affixed on the film surface of the other side is obtained.
Japanese Patent No. 2870348 Japanese Patent Laid-Open No. 2001-236841 (see FIG. 1)

上述のフラットケーブルで、図9(B)に示すように端末部1の先端1aは、平型導体2、絶縁フィルム3b及び補強フィルム4の先端は同じ位置に揃った状態で形成されている。これは、その作製工程で補強フィルム4を接着した後、平型導体2と絶縁フィルム3bと一体に切断するという製造上の容易性から生じる形状である。このように形成された端末部1は、図9(C)に示すように、ジャック型のコネクタ5に挿入され、コネクタ内の接触片6が露出されている平型導体2の表面に接触して、電気的接続が得られるようになっている。   In the above-described flat cable, as shown in FIG. 9B, the tip 1a of the terminal portion 1 is formed with the tips of the flat conductor 2, the insulating film 3b, and the reinforcing film 4 aligned at the same position. This is a shape resulting from the ease of manufacturing in which the reinforcing film 4 is bonded in the manufacturing process, and then the flat conductor 2 and the insulating film 3b are integrally cut. As shown in FIG. 9C, the terminal portion 1 formed in this way is inserted into the jack-type connector 5 and contacts the surface of the flat conductor 2 where the contact piece 6 in the connector is exposed. Thus, an electrical connection can be obtained.

しかしながら、コネクタ5の接触片6は、通常、接触部6aが露出されている導体面を弾性的に押圧して良好な電気接触と保持力を維持するようにされている。このため、端末部1をコネクタ5内に挿入するに際して、端末部の1の先端部1aは、その挿入初期において接触片6のテーパ端6bをその弾圧力に抗して押し開く必要があり、平型導体2の先端は大きな応力を受ける。平型導体2は上述したように一方の絶縁フィルム3bに接着剤で接着された程度で、しかも薄い軟銅で形成されていることから、機械的な強度は必ずしも大きくなく、コネクタ5への挿入接続時に、接触片6の弾圧力と摩擦摺接により、絶縁フィルム3bから剥がれることがある。   However, the contact piece 6 of the connector 5 is normally configured to elastically press the conductor surface from which the contact portion 6a is exposed to maintain good electrical contact and holding force. For this reason, when the terminal portion 1 is inserted into the connector 5, the tip end portion 1a of the terminal portion 1 needs to push open the tapered end 6b of the contact piece 6 against the elastic force at the initial insertion stage. The tip of the flat conductor 2 receives a large stress. As described above, since the flat conductor 2 is formed of thin soft copper to the extent that it is adhered to one insulating film 3b with an adhesive, the mechanical strength is not necessarily high, and the insertion connection to the connector 5 is performed. Sometimes, the contact piece 6 may be peeled off from the insulating film 3b due to the elastic pressure and frictional sliding contact.

フラットケーブル端末部1をコネクタ5に挿入する際に、平型導体2が支持基材の絶縁フィルムから剥離されたりすると、コネクタとの電気接続が損なわれる。このため、接続時にこのような状態に気がつかずに接続が行なわれ、また、当初は接続不備がないように見えても、いずれ、断線や隣接導体との短絡等を起こすこととなる。
本発明は、上述した実情に鑑みてなされたもので、フラットケーブル端末部を電気コネクタに挿入接続する際に、コネクタの接触片による弾圧力により、平型導体が支持基材から剥離するのを防止できるフラットケーブルの提供を課題とする。
When the flat cable terminal portion 1 is inserted into the connector 5 and the flat conductor 2 is peeled off from the insulating film of the support base, the electrical connection with the connector is impaired. For this reason, the connection is made without noticing such a state at the time of connection, and even if it seems that there is no connection defect at the beginning, a disconnection, a short circuit with an adjacent conductor, etc. will eventually occur.
The present invention has been made in view of the above-described circumstances, and when a flat cable terminal portion is inserted and connected to an electrical connector, the flat conductor is peeled off from the support base material due to the elastic force by the contact piece of the connector. An object is to provide a flat cable that can be prevented.

本発明によるフラットケーブルは、平行に配置された複数本の平型導体を絶縁フィルムで被覆し、端末部において一方の面側に平型導体端部を露出させ、他方の面側に補強フィルムを接着固定したフラットケーブルである。この構成において、補強フィルムの端部が平型導体端部の先端より突き出るようにする。また、他の構成として、平型導体端部と絶縁フィルムとの長手方向の接着界面が露出しないように覆う構成とする。接着界面を覆う形態として、平型導体端部の先端を絶縁フィルムの先端又は樹脂を付与して覆うようにする。さらに、他の形態として平型導体端部を絶縁フィルムの先端より突き出させ、絶縁フィルムの先端に折り曲げて覆うようにする。そして、本発明のうち、特許を受けようとする発明は、以下の通りである。平行に配置された複数本の平型導体の両面を絶縁フィルムで被覆し、端末部において、一方の面側に前記複数本の平型導体全ての端部を露出させ、他方の面側の絶縁フィルムに補強フィルムを接着固定したフラットケーブルであって、前記平型導体端部と他方の面側の前記絶縁フィルムとの接着界面が露出しないように覆われているフラットケーブルにおいて、
前記平型導体端部が、他方の面側の前記絶縁フィルムの先端より突き出て、前記絶縁フィルムの先端部において折り曲げられ、前記絶縁フィルムの先端より突き出ている前記補強フィルムと接着固定されることにより、前記接着界面が露出しないように覆われていることを特徴とするフラットケーブル。
The flat cable according to the present invention covers a plurality of flat conductors arranged in parallel with an insulating film, exposes the end of the flat conductor on one surface side at the terminal portion, and a reinforcing film on the other surface side. It is a flat cable that is bonded and fixed. In this configuration, the end of the reinforcing film protrudes from the tip of the flat conductor end. Moreover, it is set as the structure covered so that the adhesive interface of the longitudinal direction of a flat conductor edge part and an insulating film may not be exposed as another structure. As a form for covering the adhesive interface, the tip of the flat conductor end is covered with the tip of an insulating film or resin. Furthermore, as another form, the end portion of the flat conductor is protruded from the tip of the insulating film, and is bent and covered at the tip of the insulating film. And among the present inventions, the inventions to be patented are as follows. Cover both sides of a plurality of flat conductors arranged in parallel with an insulating film, and at the terminal portion, expose the ends of all of the plurality of flat conductors on one side, and insulate the other side A flat cable in which a reinforcing film is bonded and fixed to a film, and the flat cable is covered so that an adhesive interface between the flat conductor end and the insulating film on the other surface side is not exposed.
The flat conductor end protrudes from the tip of the insulating film on the other surface side, is bent at the tip of the insulating film, and is bonded and fixed to the reinforcing film protruding from the tip of the insulating film. The flat cable is characterized in that the adhesive interface is covered so as not to be exposed.

補強フィルムの端部を導体端部より突き出す構成とすることにより、コネクタへの挿入初期に補強フィルムによりある程度コネクタの接触片を押し開き、次いで平型導体端部で接触片を押し開くので、接触抵抗を小さくするとともに導体端部に強い弾性力が直接及ぶのを軽減することができる。
また、平型導体端部と絶縁フィルムとの長手方向の接着界面が露出しないようにすることにより平型導体端部を絶縁フィルムから剥がれにくくすることができる。さらに平型導体端部の先端を前記絶縁フィルムで覆う構成、又は、平型導体端部を絶縁フィルムの先端で折り曲げる構成とすることにより、平型導体端部の先端が直接コネクタの接触片に当たらず平型導体の損傷と剥がれを抑制することができる。
By adopting a configuration in which the end of the reinforcing film protrudes from the end of the conductor, the contact piece of the connector is pushed open to some extent by the reinforcing film in the initial stage of insertion into the connector, and then the contact piece is pushed open at the end of the flat conductor. It is possible to reduce the resistance and to reduce the strong elastic force directly reaching the conductor end.
Further, the flat conductor end portion can be made difficult to peel off from the insulating film by preventing the adhesive interface in the longitudinal direction between the flat conductor end portion and the insulating film from being exposed. Furthermore, the end of the flat conductor end is directly covered with the insulating film, or the end of the flat conductor end is directly connected to the contact piece of the connector. The flat conductor can be prevented from being damaged and peeled off .

図1により本発明の第1の実施形態を説明する。図1(A)はフラットケーブル全体の概略を説明する図、図1(B)はコネクタとの接続を説明する図、図1(C)は応用例を説明する図である。図中の符号は、図9で用いたのと同じ符号を用いることにより説明省略する。なお、図示したもののうち、図5に記載の第2の実施形態のみが、特許請求の範囲に記載の発明の具体例である。 A first embodiment of the present invention will be described with reference to FIG. 1A is a diagram for explaining the outline of the entire flat cable, FIG. 1B is a diagram for explaining connection with a connector, and FIG. 1C is a diagram for explaining an application example. Description of the reference numerals in the figure is omitted by using the same reference numerals as those used in FIG. Of the illustrated examples, only the second embodiment shown in FIG. 5 is a specific example of the invention described in the claims.

本発明における、フラットケーブルとは、断面が平坦な複数本の平型導体を平面上に並べ、平型導体の上下面に薄い絶縁フィルムを貼り合わせて被覆すると共に、接着一体化した形状のケーブルを主体部分とし、その主体部分の少なくとも一方の端部に、コネクタに接続するための端末部を備えた構成のものとする。ケーブルの主体部分は、多数の平型導体を直線状に平行一列に並べた形態のもの、又は多数の平型導体の導体間隔を維持した状態あるいは導体間隔を変えて非直線状に平面上に並べた種々の形態のものを含むものとする。さらに、ケーブルの主体部分は、複数の平型導体を絶縁フィルムで一体化した後、これを複数層に積層した形態や平面状に配列したものを複数層に積層した形態や、束ねるように筒状に丸めた形態での使用を含むものとする。   In the present invention, the flat cable is a cable having a shape in which a plurality of flat conductors having a flat cross section are arranged on a flat surface, and a thin insulating film is bonded to the upper and lower surfaces of the flat conductor to cover them, and is bonded and integrated. And a terminal portion for connecting to the connector at at least one end of the main portion. The main part of the cable has a configuration in which a large number of flat conductors are arranged in a straight line in a straight line, or a state in which the conductor spacing of a large number of flat conductors is maintained or the conductor spacing is changed and is non-linear on a flat surface. It shall include those in various forms. Further, the main part of the cable is formed by integrating a plurality of flat conductors with an insulating film, and then laminating them in a plurality of layers, a structure in which a flat array is laminated in a plurality of layers, or a tube that is bundled Including use in the form of rounded shapes.

本発明のフラットケーブルの主体部分は、図9で説明したのと同様に、複数本の平型導体2(以下、単に導体という)を平行に並べ、上下から絶縁フィルム3a,3bを貼り合わせて被覆すると共に、接着一体化して形成される。絶縁フィルム3a,3bは、例えば、ポリエステル樹脂系のフィルムが用いられ、そのフィルム内面に熱可塑性樹脂又は熱硬化性樹脂の各種接着剤3cを塗布して積層一体化(以下、絶縁フィルム3a,3b、接着剤3cを含めて絶縁被覆3という)される。また、補強フィルム4もポリエステル樹脂系のフィルムが用いられ、絶縁フィルム3a,3bより、例えば、5倍程度の厚さのフィルムが用いられる。   The main portion of the flat cable according to the present invention has a plurality of flat conductors 2 (hereinafter simply referred to as conductors) arranged in parallel and bonded with insulating films 3a and 3b from above and below, as described in FIG. It is formed by coating and bonding and integration. As the insulating films 3a and 3b, for example, a polyester resin film is used, and various adhesives 3c of a thermoplastic resin or a thermosetting resin are applied to the inner surface of the film, and are laminated and integrated (hereinafter referred to as insulating films 3a and 3b). And the insulating coating 3 including the adhesive 3c). The reinforcing film 4 is also a polyester resin film, and a film having a thickness about five times that of the insulating films 3a and 3b is used.

導体2は、従来と同様に、例えば、厚さ0.035μm、幅0.8mm程度の錫メッキ軟銅が用いられる。この導体2は、所定のピッチ(例えば、1.25mm程度)で、上下の絶縁フィルム3a,3b間で平行に配列されてフィルム間に介在する接着剤3c等で電気的に絶縁される。フラットケーブルの主体部分の厚みは、例えば、0.12mm前後で、全体として柔軟性と摺動性を備えたフレキシブルなフラットケーブルとして形成される。   For example, tin-plated annealed copper having a thickness of about 0.035 μm and a width of about 0.8 mm is used for the conductor 2 as in the conventional case. The conductor 2 is electrically insulated by an adhesive 3c or the like that is arranged in parallel between the upper and lower insulating films 3a and 3b at a predetermined pitch (for example, about 1.25 mm) and interposed between the films. The thickness of the main portion of the flat cable is, for example, about 0.12 mm, and is formed as a flexible flat cable having flexibility and slidability as a whole.

フラットケーブルの端末部1は、絶縁被覆3の一方の面側で導体2の端部が、例えば、3mm程度露出され、反対側の面側に、例えば、長さ5mm程度の補強フィルム4を貼り付けて補強され、コネクタ5への挿入接続が可能な構成とされる。本発明の第1の実施形態としては、図1(A)に示すように、補強フィルムの先端部4aは、導体の先端部2a及び絶縁被覆の先端部3dより突き出た形状とする。なお、平型導体の先端部2aと絶縁被覆の先端部3dは、一致しているものとするThe end portion 1 of the flat cable has an end portion of the conductor 2 exposed on the one surface side of the insulating coating 3 , for example, about 3 mm, and a reinforcing film 4 having a length of, for example, about 5 mm is pasted on the opposite surface side. In addition, it is reinforced and can be inserted into the connector 5. In the first embodiment of the present invention, as shown in FIG. 1 (A), the tip 4a of the reinforcing film has a shape protruding from the tip 2a of the conductor and the tip 3d of the insulating coating. It is assumed that the front end 2a of the flat conductor and the front end 3d of the insulating coating are coincident.

以上のように構成された端末部1は、図1(B)に示すように、多数の接触片6を収納したジャック型のコネクタ5に挿入され、絶縁被覆3の一方の面側に露出されている導体2の端部は、接触片6の接触部6aと接触して電気接続が形成される。端末部1の挿入に際しては、先ず、補強フィルムの先端部4aが接触片6のテーパ端6bに当たって押し開く。次いで、導体の先端部2aがテーパ端6bに当たって、さらに接触片6を押し開いて、端末部1は接触片6内に深く押し込まれる。   As shown in FIG. 1B, the terminal portion 1 configured as described above is inserted into a jack-type connector 5 containing a large number of contact pieces 6 and exposed to one surface side of the insulating coating 3. The end portion of the conductor 2 is in contact with the contact portion 6a of the contact piece 6 to form an electrical connection. When inserting the terminal portion 1, first, the distal end portion 4 a of the reinforcing film hits the tapered end 6 b of the contact piece 6 and pushes it open. Next, the tip portion 2 a of the conductor hits the tapered end 6 b and further pushes the contact piece 6, so that the terminal portion 1 is pushed deeply into the contact piece 6.

補強フィルム4によって、接触片6がある程度押し開かれ、初期挿入力が軽減された状態で導体2が挿入されるため、図9(C)の初期挿入力が直接に導体2に加わる場合と比べて、導体の先端部2aに加わる弾圧力が低減される。このため、導体2が剥がれるのを抑制でき、損傷を防止することができる。また、導体2と絶縁被覆3との接着界面が先端部で露出していると、剥がれやすいということもあるので、図1(C)に示すように、補強フィルムの先端部4aが突き出ることにより生じる段部に充填樹脂13を付与する。これにより、先端形状の急激な変化を緩和して挿入時の挿入力変化を緩やかなものとし、また、導体2と絶縁被覆3との接着界面が充填樹脂13により塞がれるので、さらに接着剥がれを抑制することができる。   Since the contact piece 6 is pushed open to some extent by the reinforcing film 4 and the conductor 2 is inserted in a state where the initial insertion force is reduced, the initial insertion force in FIG. 9C is directly applied to the conductor 2. Thus, the elastic pressure applied to the tip 2a of the conductor is reduced. For this reason, it can suppress that the conductor 2 peels and can prevent damage. In addition, if the adhesive interface between the conductor 2 and the insulating coating 3 is exposed at the tip, it may be easily peeled off, so that the tip 4a of the reinforcing film protrudes as shown in FIG. Filling resin 13 is applied to the resulting step. As a result, the rapid change of the tip shape is alleviated to make the insertion force change during insertion gentle, and the adhesive interface between the conductor 2 and the insulating coating 3 is blocked by the filling resin 13, so that the adhesion is further peeled off. Can be suppressed.

図2〜図5は第2の実施形態を説明する図である。この第2の実施形態は、フラットケーブルの端末部における導体と絶縁フィルムとの長手方向の接着界面が、外部に露出されていないように構成するものである。すなわち、具体的には図2〜図5により詳述するが、導体の先端部がコネクタの接触片等に接触して、導体と絶縁フィルムとの接着界面で剥がれるのを抑制するものである。 2-5 is a figure explaining 2nd Embodiment . This 2nd Embodiment is comprised so that the adhesive interface of the longitudinal direction of the conductor and insulating film in the terminal part of a flat cable may not be exposed outside. That is, although specifically described in detail with reference to FIG . 2 to FIG. 5 , the conductor tip is prevented from coming into contact with the contact piece of the connector and peeling off at the adhesive interface between the conductor and the insulating film.

図2は、補強フィルム4が貼り付けられる面側の絶縁被覆の先端部3dを、導体2の先端部2aより突き出させ、導体の先端部2aを覆うように折り曲げて、導体2と絶縁フィルム(絶縁被覆3)との接着界面を覆う構成としたものである。図中の符号は、図1で用いたのと同じ符号を用いることにより説明を省略する。絶縁被覆の先端部3dは、折り曲げた際に導体2の平坦面から突き出ず、ほぼ平坦面に揃う程度で形成されているのが望ましい。なお、補強フィルムの先端部4aは、図1の場合と同様に、導体の先端部2a及び絶縁被覆の先端部3dから突き出ていてもよいが、突き出ていなくてもよい。   FIG. 2 shows that the end portion 3d of the insulating coating on the surface side to which the reinforcing film 4 is attached is protruded from the end portion 2a of the conductor 2 and is bent so as to cover the end portion 2a of the conductor. It is configured to cover the adhesive interface with the insulating coating 3). The reference numerals in the figure are the same as those used in FIG. It is desirable that the tip 3d of the insulating coating is formed so as not to protrude from the flat surface of the conductor 2 when bent, and to be substantially aligned with the flat surface. In addition, although the front-end | tip part 4a of a reinforcement film may protrude from the front-end | tip part 2a of a conductor and the front-end | tip part 3d of insulation coating similarly to the case of FIG. 1, it does not need to protrude.

以上のように構成された端末部1は、図2(B)に示すように、多数の接触片6を収納したジャック型のコネクタ5に挿入され、絶縁被覆3の一方の面側に露出されている導体2の端部は、接触片6の接触部6aと接触して電気接続が形成される。端末部1の挿入に際しては、補強フィルムの先端部4a及び絶縁被覆の先端部3dが、接触片6のテーパ端6bに当たって押し開く。端末部1をさらに押し込むことにより、導体2の端部表面が接触部6aに摺接して電気的、機械的に接触が保たれる。   As shown in FIG. 2B, the terminal portion 1 configured as described above is inserted into a jack-type connector 5 containing a large number of contact pieces 6 and exposed to one surface side of the insulating coating 3. The end portion of the conductor 2 is in contact with the contact portion 6a of the contact piece 6 to form an electrical connection. When the terminal portion 1 is inserted, the front end portion 4 a of the reinforcing film and the front end portion 3 d of the insulating coating hit against the tapered end 6 b of the contact piece 6 and are pushed open. By further pushing the terminal portion 1, the end surface of the conductor 2 is slidably contacted with the contact portion 6 a to maintain electrical and mechanical contact.

導体の先端部2aは、絶縁被覆の先端部3dで覆われ、また、絶縁被覆3との接着界面も覆われることにより、接触片6のテーパ端6bに当たることなく挿入される。このため、図9(C)のように、コネクタ5への挿入時に導体2の先端に接触片6が直接接触する場合と比べて、導体の先端部2aに作用する弾圧力が低減される。このため、導体2が剥がれるのを抑制でき、損傷を防止することができる。また、導体2と絶縁被覆3との接着界面が折り曲げられた絶縁被覆の先端部3dにより塞がれるので、さらに接着剥がれを抑制することができる。   The leading end portion 2a of the conductor is covered with the leading end portion 3d of the insulating coating, and the adhesive interface with the insulating coating 3 is also covered, so that the conductor is inserted without hitting the tapered end 6b. For this reason, as shown in FIG. 9C, the elastic force acting on the tip 2a of the conductor is reduced as compared with the case where the contact piece 6 is in direct contact with the tip of the conductor 2 when inserted into the connector 5. For this reason, it can suppress that the conductor 2 peels and can prevent damage. Further, since the bonding interface between the conductor 2 and the insulating coating 3 is closed by the bent end portion 3d of the insulating coating, it is possible to further suppress the adhesion peeling.

図3は、図9で説明したように端末部1の先端は、導体の先端部2a、絶縁被覆の先端部3d及び補強フィルムの先端部4aが同じ位置とし、少なくとも、導体の先端部2aと絶縁被覆の先端部3で形成される接着界面を樹脂で覆う構成としたものである。図中の符号は、図1で用いたのと同じ符号を用いることにより説明を省略する。導体2と絶縁被覆3との接着界面を覆う樹脂14には、熱硬化性又は熱可塑性の接着性の樹脂が用いられる。なお、樹脂14は導体の先端部2aと絶縁被覆の先端部3における接着界面のみに付与されていればよいが、補強フィルムの先端部4aに跨って付与されていてもよい。   In FIG. 3, as described in FIG. 9, the tip of the terminal portion 1 has the tip 2 a of the conductor, the tip 3 d of the insulating coating, and the tip 4 a of the reinforcing film at the same position. The adhesive interface formed by the tip 3 of the insulating coating is covered with resin. The reference numerals in the figure are the same as those used in FIG. A thermosetting or thermoplastic adhesive resin is used for the resin 14 covering the adhesive interface between the conductor 2 and the insulating coating 3. The resin 14 may be applied only to the adhesion interface between the conductor tip 2a and the insulating coating tip 3 but may be applied across the reinforcing film tip 4a.

以上のように構成された端末部1は、図3(B)に示すように、多数の接触片6を収納したジャック型のコネクタ5に挿入され、絶縁被覆3の一方の面側に露出されている導体2の端部は、接触片6の接触部6aと接触して電気接続が形成される。端末部1の挿入に際しては、補強フィルムの先端部4a及び樹脂14が、接触片6のテーパ端6bに当たって押し開く。端末部1をさらに押し込むことにより、導体2の端部表面が接触部6aに摺接して電気的、機械的に接触が保たれる。   As shown in FIG. 3B, the terminal portion 1 configured as described above is inserted into a jack-type connector 5 containing a large number of contact pieces 6 and exposed to one surface side of the insulating coating 3. The end portion of the conductor 2 is in contact with the contact portion 6a of the contact piece 6 to form an electrical connection. When the terminal portion 1 is inserted, the distal end portion 4 a of the reinforcing film and the resin 14 hit against the tapered end 6 b of the contact piece 6 and are pushed open. By further pushing the terminal portion 1, the end surface of the conductor 2 is slidably contacted with the contact portion 6 a to maintain electrical and mechanical contact.

導体の先端部2a及びその接着界面は樹脂14で覆われているので、導体の先端部2aは接触片6のテーパ端6bに直接接触することなく挿入され、また、接着力も補強されることとなるので、機械的強度も補強される。したがって、図9(C)のように、コネクタ5への挿入時に導体2の先端に接触片6が直接接触する場合と比べて、導体の先端部2aに作用する弾圧力が低減され、導体2が剥がれるのを抑制でき、損傷を防止することができる。   Since the conductor tip 2a and the bonding interface thereof are covered with the resin 14, the conductor tip 2a is inserted without directly contacting the taper end 6b of the contact piece 6, and the adhesive force is also reinforced. Therefore, mechanical strength is also reinforced. Therefore, as shown in FIG. 9C, the elastic force acting on the tip 2a of the conductor is reduced compared to the case where the contact piece 6 directly contacts the tip of the conductor 2 when inserted into the connector 5, and the conductor 2 Can be prevented from being peeled off, and damage can be prevented.

図4及び図5は、導体の先端部2aを絶縁被覆の先端部3dより突き出させ、絶縁被覆の先端部3dを覆うように折り曲げて、導体2と絶縁フィルム(絶縁被覆3)との接着界面を覆う構成としたものである。図中の符号は、図1で用いたのと同じ符号を用いることにより説明を省略する。 4 and 5 show a bonding interface between the conductor 2 and the insulating film (insulating coating 3) by projecting the leading end portion 2a of the conductor from the leading end portion 3d of the insulating coating and bending it so as to cover the leading end portion 3d of the insulating coating. It is set as the structure which covers. The reference numerals in the figure are the same as those used in FIG.

図4(A)においては、補強フィルムの先端部4aが絶縁被覆の先端部3dに一致する形態で、突き出た状態にある導体の先端部2aを折り曲げて、補強フィルムの先端部4aと絶縁被覆の先端部3dを同時に覆っている。この場合の端末部1は、図4(B)に示すように、端末部1の挿入に際しては、前端部で折り曲げられた導体の先端部2aが、コネクタ5の接触片6のテーパ端6bに当たって押し開く。端末部1をさらに押し込むことにより、導体2の端部表面が接触部6aに摺接して電気的、機械的に接触が保たれる。   In FIG. 4A, the leading end portion 4a of the reinforcing film is folded in such a manner that the leading end portion 4a of the reinforcing film coincides with the leading end portion 3d of the insulating coating, and the leading end portion 4a of the reinforcing film and the insulating coating are bent. 3d is covered at the same time. As shown in FIG. 4B, the terminal portion 1 in this case has a conductor tip 2a bent at the front end when it is inserted into the tapered end 6b of the contact piece 6 of the connector 5, as shown in FIG. Push open. By further pushing the terminal portion 1, the end surface of the conductor 2 is slidably contacted with the contact portion 6 a to maintain electrical and mechanical contact.

導体の先端部2aは、コネクタ5への挿入初期において、接触片6のテーパ端6bに直接当たる形態となるが、導体の先端部2aを、補強フィルムの先端部4aと絶縁被覆の先端部3dに押付けるように弾圧力が作用する。このため、図9(C)のように、コネクタへの挿入時に接触片6が導体2の先端を引き剥がすように作用する場合と比べて、導体の先端部2aが引き剥がされるのを抑制でき、損傷を防止することができる。また、導体2と絶縁被覆3との接着界面が折り曲げられた導体の先端部2aで塞がれ、導体2の先端ではない途中部分で接触片6と接触するので、さらに剥がれにくくすることができる。   The conductor tip 2a directly contacts the tapered end 6b of the contact piece 6 in the initial stage of insertion into the connector 5, but the conductor tip 2a is connected to the tip 4a of the reinforcing film and the tip 3d of the insulating coating. The elastic force acts so as to press against. Therefore, as shown in FIG. 9C, it is possible to prevent the conductor tip 2a from being peeled off compared to the case where the contact piece 6 acts to peel off the tip of the conductor 2 when inserted into the connector. Can prevent damage. Moreover, since the adhesive interface between the conductor 2 and the insulating coating 3 is blocked by the bent conductor tip 2a and is in contact with the contact piece 6 at an intermediate portion that is not the tip of the conductor 2, it is possible to further prevent peeling. .

図5(A)においては、導体の先端部2aを絶縁被覆の先端部3dより突き出させるとともに、補強フィルムの先端部4aも突き出させている。そして、導体の先端部2aは、絶縁被覆の先端部3dを覆うように折り曲げられると共に、補強フィルム4の突き出た内側に接着される。この端末部1は、図5(B)に示すように、端末部1の挿入に際しては、図1(B)で説明したのと同様に、前端から突き出た補強フィルムの先端部4aが、接触片6のテーパ端6bに当たって押し開く。次いで、導体の2の折り曲げられた先端部2aがテーパ端6bに当たって、さらに接触片6を押し開き、端末部1は接触片6内に深く押し込まれ、導体2の表面が接触部6aに摺接して電気的、機械的に接触が保たれる。 In FIG. 5 (A), the are both causes also protruded tip 4a of the reinforcing film when the leading end portion 2a of the conductors protrude from the tip portion 3d of the insulating coating. And the front-end | tip part 2a of a conductor is adhere | attached on the inner side which the reinforcement film 4 protruded while being bent so that the front-end | tip part 3d of insulation coating might be covered. As shown in FIG. 5 (B), when the terminal portion 1 is inserted, the terminal portion 1 is in contact with the distal end portion 4a of the reinforcing film protruding from the front end, as described in FIG. 1 (B). The piece 6 is pressed against the tapered end 6b. Next, the bent end portion 2a of the conductor 2 hits the taper end 6b to further open the contact piece 6, the end portion 1 is pushed deeply into the contact piece 6, and the surface of the conductor 2 is in sliding contact with the contact portion 6a. Electrical and mechanical contact is maintained.

接触フィルム4によって、接触片6がある程度押し開かれ、初期挿入力が軽減された状態で導体2が挿入されるため、図9(C)の初期挿入力が直接に導体2に加わる場合と比べて、導体の先端部2aに加わる弾性力が低減される。このため、導体2の端部が剥がれるのを抑制でき、損傷を防止することができる。また、導体2と絶縁被覆3との接着界面が折り曲げられた導体の先端部2aで塞がれ、導体2の先端ではない途中部分で接触片6と接触するので、さらに剥がれにくくすることができる。 Since the contact piece 6 is pushed and opened to some extent by the contact film 4 and the conductor 2 is inserted in a state where the initial insertion force is reduced, the initial insertion force in FIG. 9C is directly applied to the conductor 2. Thus, the elastic force applied to the tip portion 2a of the conductor is reduced. For this reason, it can suppress that the edge part of the conductor 2 peels, and can prevent damage. In addition, since the bonding interface between the conductor 2 and the insulating coating 3 is blocked by the bent conductor tip 2a and contacts the contact piece 6 at a midway portion that is not the tip of the conductor 2, it can be further prevented from peeling off. The

図6〜図8は、本発明によるフラットケーブルを製造する一例を説明する図で、図6はフラットケーブルのラミネートと分断方法の概略を説明する図、図7は図4に示した端末部の形成例を示す図、図8は図5に示した端末部の形成例を示す図である。図中、7はラミネートローラ、8はスリッタ、9はカッター、10a,10bはテープ状フィルム、11、12は開口穴を示す。その他の符号は図1〜図5で用いたのと同じ符号を用いることにより説明を省略する。   6 to 8 are diagrams for explaining an example of manufacturing the flat cable according to the present invention. FIG. 6 is a diagram for explaining the outline of the flat cable laminating and dividing method. FIG. 7 is a diagram of the terminal portion shown in FIG. FIG. 8 is a diagram illustrating a formation example, and FIG. 8 is a diagram illustrating a formation example of the terminal unit illustrated in FIG. 5. In the figure, 7 is a laminating roller, 8 is a slitter, 9 is a cutter, 10a and 10b are tape-like films, and 11 and 12 are opening holes. Description of other reference numerals is omitted by using the same reference numerals as those used in FIGS.

図1〜図5で説明したフラットケーブルは、例えば、図6に示すような方法で作製される。フラットケーブルの絶縁フィルム3a,3bは、内側に接着剤層を有するテープ状フィルム10a,10bの形態で連続供給される。一方のテープ状フィルム10aには、例えば、予め開口穴11が所定の間隔で形成され、他方のテープ状フィルム10bには、開口穴12が開口穴11の中央に位置するように形成される。開口穴12は、例えば、長さ方向(テープ状フィルムの長さ方向)の幅が開口穴11側より小さく形成する。また、必要に応じて補強フィルム4で開口穴12を塞ぐか、塞がないようにして予め貼り付けておいてもよい。なお、開口穴12を塞がないよう貼り付けるには、補強フィルム4を2枚に分けて、一方の端部が開口穴12の前後のエッジに一致するように貼り付ければよい。   The flat cable described in FIGS. 1 to 5 is manufactured by a method as shown in FIG. 6, for example. The insulating films 3a and 3b of the flat cable are continuously supplied in the form of tape-like films 10a and 10b having an adhesive layer on the inside. For example, the opening holes 11 are formed in the tape-shaped film 10 a in advance at a predetermined interval, and the opening hole 12 is formed in the other tape-shaped film 10 b so as to be positioned at the center of the opening hole 11. For example, the opening hole 12 is formed so that the width in the length direction (the length direction of the tape-like film) is smaller than the opening hole 11 side. Further, if necessary, the opening hole 12 may be closed with the reinforcing film 4 or may be attached in advance so as not to be closed. In order to attach the opening hole 12 so as not to be blocked, the reinforcing film 4 may be divided into two pieces and attached so that one end thereof coincides with the front and rear edges of the opening hole 12.

線条の形態で連続供給される多数本の導体2は、テープ状フィルム10a,10bで上下面から挟まれ、ラミネートローラ7により接着一体化されて巻き取られる。ラミネートローラ7は、テープ状フィルムに付与されている接着剤の種類に応じて加熱ローラを用いることもできる。接着一体化されたテープ状フィルム10a,10bは、巻取り手前で、スリッタ8により長手方向に沿って分断され、所定の導体本数を有する連続する長尺のフラットケーブルの形態で一旦巻き取られる。この後、図6(B)に示すように、開口穴11の中心で長尺のフラットケーブルをカッター9で切断することにより、両端に端末部1を有するフラットケーブルが得られる。   A large number of conductors 2 that are continuously supplied in the form of filaments are sandwiched from the upper and lower surfaces by tape-like films 10 a and 10 b, and are bonded and integrated by a laminating roller 7 and wound. As the laminating roller 7, a heating roller can be used depending on the type of adhesive applied to the tape-like film. The adhesively integrated tape-like films 10a and 10b are cut along the longitudinal direction by a slitter 8 before winding, and are once wound up in the form of a continuous long flat cable having a predetermined number of conductors. Thereafter, as shown in FIG. 6B, a flat cable having terminal portions 1 at both ends is obtained by cutting a long flat cable with a cutter 9 at the center of the opening hole 11.

図7(A)は図4に示した形状の端末部を形成する例で、図6(B)のカッター切断の状態を示している。テープ状フィルム10a側に設けた開口穴11は、端末部1で絶縁被覆3の一方の絶縁フィルム3a側で導体2を露出させるためのもので、開口穴11の中心部で切断することにより、コネクタとの接続される導体面を形成することができる。テープ状フィルム10b側に設けた開口穴12は、テープ状フィルム10a側に設けた開口穴11より穴の長さ方向幅が短く、開口穴11の中央に重なるように設けられる。開口穴11,12の中心で切断したとき、導体の先端部2aを絶縁被覆の先端部3dより突き出させることができる。   FIG. 7A shows an example in which the terminal portion having the shape shown in FIG. 4 is formed, and shows the state of cutting the cutter in FIG. The opening hole 11 provided on the tape-shaped film 10a side is for exposing the conductor 2 on the one insulating film 3a side of the insulating coating 3 at the terminal portion 1, and by cutting at the center of the opening hole 11, A conductor surface connected to the connector can be formed. The opening hole 12 provided on the tape-shaped film 10 b side is provided so that the width in the length direction of the hole is shorter than the opening hole 11 provided on the tape-shaped film 10 a side and overlaps the center of the opening hole 11. When cutting at the center of the opening holes 11 and 12, the leading end 2a of the conductor can be protruded from the leading end 3d of the insulating coating.

図7(B)に示すように、この突き出た導体の先端部2aは、絶縁被覆の先端部3dを覆うように折り曲げられる。また、開口穴12側には補強フィルム4が貼り付けられていて、その先端部4aは絶縁被覆の先端部3dと一致した端部を形成している。導体の先端部2aは、この補強フィルムの先端部4aも覆うように折り曲げるが、先端部4aの全面が覆われていなくてもよい。しかし、折り曲げられた導体の先端部2aは接着固定されていることが望ましい。   As shown in FIG. 7B, the protruding tip 2a of the conductor is bent so as to cover the tip 3d of the insulating coating. Further, the reinforcing film 4 is attached to the opening hole 12 side, and the tip portion 4a forms an end portion that coincides with the tip portion 3d of the insulating coating. The leading end portion 2a of the conductor is bent so as to cover the leading end portion 4a of the reinforcing film, but the entire end portion 4a may not be covered. However, it is desirable that the end portion 2a of the bent conductor is bonded and fixed.

図8(A)は、図5に示した形状の端末部を形成する例で、図6(B)のカッター切断の状態を示している。テープ状フィルム10a側に設けた開口穴11及びテープ状フィルム10b側に設けた開口穴12は、上述の図7で説明したのと同様の機能を有するものである。補強フィルム4は、端末部切断後に貼り付けてもよいが、開口穴12を塞ぐ形で予め貼り付けておき、カッター9で同時に切断するようにしてもよい。開口穴11,12の中心で切断したとき、導体の先端部2aが絶縁被覆の先端部3dより突き出し、また補強フィルム4の先端部4aも突き出た形態で形成することができる。   FIG. 8A shows an example in which the terminal portion having the shape shown in FIG. 5 is formed, and shows the state of cutting the cutter in FIG. The opening hole 11 provided on the tape-like film 10a side and the opening hole 12 provided on the tape-like film 10b side have functions similar to those described in FIG. The reinforcing film 4 may be affixed after cutting the terminal portion, but may be affixed in advance so as to close the opening hole 12 and cut simultaneously with the cutter 9. When cut at the center of the opening holes 11 and 12, the leading end portion 2a of the conductor protrudes from the leading end portion 3d of the insulating coating, and the leading end portion 4a of the reinforcing film 4 protrudes.

図8(B)に示すように、この突き出た導体の先端部2aは、絶縁被覆の先端部3dを覆うように折り曲げられ、補強フィルム4の突き出た端部上に重ねて接着固定する。なお、導体の先端部2aは補強フィルムの先端部4aに一致していなくてもよく、先端部4aより突き出ていても、引っ込んでいてもよい。   As shown in FIG. 8B, the protruding tip 2a of the conductor is bent so as to cover the tip 3d of the insulating coating, and is adhered and fixed on the protruding end of the reinforcing film 4. In addition, the front-end | tip part 2a of a conductor does not need to correspond to the front-end | tip part 4a of a reinforcement film, and may protrude from the front-end | tip part 4a, or may be retracted.

図1に示す端末部1の形成方法については、従来技術である図9の方法を用い、補強フィルム4をフラットケーブルの切断後に貼り付けることにより作製することができる。また、図2に示す端末部1の形成方法についても、従来技術である図9の方法を用い、補強フィルム4は、予めテープ状フィルムに貼り付けてあっても、フラットケーブルの切断後に貼り付けてもよい。しかし、テープ状フィルム(絶縁フィルム)の切断時に、導体2の端部が多少短くなるように打ち抜ける特殊な切断具が用いられる。   About the formation method of the terminal part 1 shown in FIG. 1, it can produce by sticking the reinforcement film 4 after the cutting | disconnection of a flat cable using the method of FIG. 9 which is a prior art. Further, as for the method of forming the terminal portion 1 shown in FIG. 2, the reinforcing film 4 is pasted after cutting the flat cable, even if the reinforcing film 4 is pasted on the tape-like film in advance using the method of FIG. May be. However, a special cutting tool that can be punched so that the end of the conductor 2 is somewhat shortened when the tape-like film (insulating film) is cut is used.

本発明の第1の実施形態を説明する図である。It is a figure explaining the 1st Embodiment of this invention. 本発明の第2の実施形態による具体例を説明する図である。It is a figure explaining the specific example by the 2nd Embodiment of this invention. 本発明の第2の実施形態による他の具体例を説明する図である。It is a figure explaining the other specific example by the 2nd Embodiment of this invention. 本発明の第2の実施形態によるその他の具体例を説明する図である。It is a figure explaining the other specific example by the 2nd Embodiment of this invention. 本発明の第2の実施形態によるその他の具体例を説明する図である。It is a figure explaining the other specific example by the 2nd Embodiment of this invention. 本発明によるフラットケーブルの製造例を説明する図である。It is a figure explaining the manufacture example of the flat cable by this invention. 図4のフラットケーブル端末部の形成方法の一例を説明する図である。It is a figure explaining an example of the formation method of the flat cable terminal part of FIG. 図5のフラットケーブル端末部の形成方法の一例を説明する図である。It is a figure explaining an example of the formation method of the flat cable terminal part of FIG. 従来のフラットケーブルの一例を示す図である。It is a figure which shows an example of the conventional flat cable. 従来のフラットケーブルの製造例を示す図である。It is a figure which shows the manufacture example of the conventional flat cable.

符号の説明Explanation of symbols

1…端末部、1a…先端部、2…平型導体、2a…導体の先端部、3…絶縁被覆、3a,3b…絶縁フィルム、3c…接着剤、3d…絶縁被覆の先端部、4…補強フィルム、4a…補強フィルムの先端部、5…コネクタ、6は接触片、6a…接触部、6b…テーパ端、7…ラミネートローラ、8…スリッタ、9…カッター、10a,10b…テープ状フィルム、11,12…開口穴、13…充填樹脂、14…樹脂。 DESCRIPTION OF SYMBOLS 1 ... Terminal part, 1a ... Tip part, 2 ... Flat conductor, 2a ... Conductor tip part, 3 ... Insulation coating, 3a, 3b ... Insulating film, 3c ... Adhesive agent, 3d ... Tip part of insulation coating, 4 ... Reinforcing film, 4a ... The tip of the reinforcing film, 5 ... Connector, 6 is a contact piece, 6a ... Contact part, 6b ... Tapered end, 7 ... Laminating roller, 8 ... Slitter, 9 ... Cutter, 10a, 10b ... Tape-like film , 11, 12 ... opening holes, 13 ... filling resin, 14 ... resin.

Claims (1)

平行に配置された複数本の平型導体の両面を絶縁フィルムで被覆し、端末部において、一方の面側に前記複数本の平型導体全ての端部を露出させ、他方の面側の絶縁フィルムに補強フィルムを接着固定したフラットケーブルであって、前記平型導体端部と他方の面側の前記絶縁フィルムとの接着界面が露出しないように覆われているフラットケーブルにおいて、
前記平型導体端部が、他方の面側の前記絶縁フィルムの先端より突き出て、前記絶縁フィルムの先端部において折り曲げられ、前記絶縁フィルムの先端より突き出ている前記補強フィルムと接着固定されることにより、前記接着界面が露出しないように覆われていることを特徴とするフラットケーブル。
Cover both sides of a plurality of flat conductors arranged in parallel with an insulating film, and at the terminal portion, expose the ends of all of the plurality of flat conductors on one side, and insulate the other side A flat cable in which a reinforcing film is bonded and fixed to a film, and the flat cable is covered so that an adhesive interface between the flat conductor end and the insulating film on the other surface side is not exposed.
The flat conductor end protrudes from the tip of the insulating film on the other surface side, is bent at the tip of the insulating film, and is bonded and fixed to the reinforcing film protruding from the tip of the insulating film. The flat cable is characterized in that the adhesive interface is covered so as not to be exposed .
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JP2006114345A (en) * 2004-10-14 2006-04-27 Funai Electric Co Ltd Flexible flat cable
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JP5871728B2 (en) * 2012-06-27 2016-03-01 日本航空電子工業株式会社 Connecting member
JP6180388B2 (en) * 2014-08-28 2017-08-16 京セラドキュメントソリューションズ株式会社 Flat cable

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