JP2004273333A - Flat cable - Google Patents

Flat cable Download PDF

Info

Publication number
JP2004273333A
JP2004273333A JP2003064293A JP2003064293A JP2004273333A JP 2004273333 A JP2004273333 A JP 2004273333A JP 2003064293 A JP2003064293 A JP 2003064293A JP 2003064293 A JP2003064293 A JP 2003064293A JP 2004273333 A JP2004273333 A JP 2004273333A
Authority
JP
Japan
Prior art keywords
insulating coating
flat cable
shield layer
outer peripheral
side insulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2003064293A
Other languages
Japanese (ja)
Other versions
JP3709992B2 (en
JP2004273333A5 (en
Inventor
Takafumi Takahashi
尚文 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kel Corp
Original Assignee
Kel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kel Corp filed Critical Kel Corp
Priority to JP2003064293A priority Critical patent/JP3709992B2/en
Priority to TW93102491A priority patent/TWI336892B/en
Priority to CNB2004100076859A priority patent/CN100394514C/en
Publication of JP2004273333A publication Critical patent/JP2004273333A/en
Application granted granted Critical
Publication of JP3709992B2 publication Critical patent/JP3709992B2/en
Publication of JP2004273333A5 publication Critical patent/JP2004273333A5/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To easily perform formation working of a pressure welding connection section with a contact at the tip of a flat cable, and a grounding connection section, where a shield layer is exposed, and to prevent an electric wire for composing the shield layer from getting loose. <P>SOLUTION: A plurality of coaxial cables 20 comprising a conductor 21, an inner periphery side insulating covering 22, a shield layer 23, and an outer periphery side insulating covering 24 are retained in parallel on the same surface by a holding tape 27 to compose a flat cable. In the flat cable, the outer periphery side insulating covering 24 and the shield layer 23 are peeled off in a range, where the end section of the coaxial cables 20 projecting outward from the end section of the holding tape 27 is at first specific length (a) from the tip, to form a pressure welded section 22a. The outer periphery side insulating covering 24 is peeled off by allowing the outer periphery side insulating covering 24a with a specific width (c) to remain in a range from the inner end of the pressure welded section 22a to a second specific length (b) to form a grounding connection section 23a. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、複数の同軸ケーブルを同一平面上に平行に並べて保持して構成されるフラットケーブルに関する。
【0002】
【従来の技術】
直線状に延びる芯線を内周側絶縁被覆により覆い、この内周側絶縁被覆の外周をシールド層により覆い、このシールド層の外周を外周側絶縁被覆により覆って構成される同軸ケーブルは従来から一般的に知られている。近年においては、同軸ケーブルを細径化する傾向が強く、例えば、芯線径が約0.1mmで、全体径(外周側絶縁被覆の径)が約0.35mm程度の極く細い同軸ケーブルも用いられている。このような同軸ケーブルを複数本、同一平面上に平行に並べて保持して構成されるフラットケーブルも知られている(例えば、特許文献1参照)。
【0003】
このようなフラットケーブルはその端部にコネクタが取り付けられて使用されるが、コネクタの取り付けに際しては、フラットケーブル端部において同軸ケーブルの外周および内周側絶縁被覆およびシールド層が剥がされて露出した芯線をコネクタの各コンタクトに半田付けしたり、外周側絶縁被覆およびシールド層のみを剥がして芯線を被覆した状態の内周側絶縁被覆を露出させ、この部分をコンタクトの圧接部に圧接接続させたりしている。
【0004】
【特許文献1】特開平10−144145号公報
【0005】
【発明が解決しようとする課題】
ところで、上記のような極細の同軸ケーブルを用いて構成されるフラットケーブルにおいて、コンタクトとの半田付けのために芯線を露出させたり、コンタクトとの圧接接続のために内周側絶縁被覆を露出させたりするときに、同軸ケーブル自体が非常に細く、且つこのように芯線、内周側絶縁被覆などが露出される同軸ケーブル先端部においてはホールディングテープ等による各同軸ケーブルの保持がなされていないため、この先端部が変形しやすく、芯線、内周側絶縁被覆などを露出させる加工が非常に難しいという問題がある。
【0006】
なお、上記特許文献1においては、外周側絶縁被覆を剥がして露出したシールド層の上に2組のグランドバー(金属泊)を半田付けし、これら2組のグランドバーを屈曲させてその間においてシールド層を切断し、先端側のグランドバーと一緒にシールド層を除去する方法が開示されているが、グランドバーの半田付け作業が必要であるなど、多数の加工工程が必要で、加工作業に手間がかかるという問題がある。
【0007】
本発明はこのような問題に鑑みたもので、簡単な加工作業でフラットケーブルの先端部においてコンクタトとの圧接接続のために内周側絶縁被覆を露出させることができ、且つその根本側においてシールド層を露出させるとともにこのシールド層を構成する電線がほぐれることが無いような構成のフラットケーブルを提供することを目的とする。
【0008】
【課題を解決するための手段】
このような目的達成のため、本発明においては、直線状に延びる芯線、芯線を覆って設けられた内周側絶縁被覆、内周側絶縁被覆の外周を覆って設けられたシールド層、およびシールド層の外周を覆って設けられた外周側絶縁被覆から構成される同軸ケーブルを、複数本、同一平面上に平行に並べて保持してフラットケーブルが構成される。そして、このフラットケーブルにおける同軸ケーブルの端部において、先端から第1の所定長さの範囲において外周側絶縁被覆およびシールド層が剥がされて内周側絶縁被覆が露出して圧接部が形成されており、圧接部の内端から第2の所定長さの範囲において先端側に所定幅の外周側絶縁被覆を残して外周側絶縁被覆が剥がされて接地接続部が形成されている。
【0009】
なお、複数の同軸ケーブルがホールディングテープにより同一平面上に平行に並べて保持されてフラットケーブルが形成され、同軸ケーブルの端部がホールディングテープの端部より外方に突出しており、このように突出する同軸ケーブルの端部において圧接部および接地接続部が形成されているような構成とすることができる。
【0010】
このフラットケーブルにおいては、同軸ケーブルの先端から第1の所定長さの位置において、YAGレーザにより外周側絶縁被覆およびシールド層を切断し、この第1の所定長さの範囲に位置する外周側絶縁被覆およびシールド層を引き抜いて内周側絶縁被覆を露出させて圧接部が形成され、この圧接部の内端から第2の所定長さの範囲において、先端側の所定幅の範囲を除く領域内にCOレーザを照射して外周側絶縁被覆を溶融除去して接地接続部が形成されるのが好ましい。
【0011】
以上の構成のフラットケーブルでは、圧接部の内端から第2の所定長さの範囲において先端側に所定幅の外周側絶縁被覆を残して外周側絶縁被覆が剥がされて接地接続部が形成されており、接地接続部において露出するシールド層は先端側に所定幅を有して残された外周側絶縁被覆により保持されるので、シールド層を形成する多数の横巻き極細電線がバラバラにほぐれることがなく、フラットケーブルの先端にコネクタを圧接接続するとともにシールド層をグランド接続するときの接続信頼性が向上する。また、YAGレーザにより外周側絶縁被覆およびシールド層を切断し、COレーザを照射して外周側絶縁被覆を溶融除去して接地接続部が形成されるので、フラットケーブル先端部における各同軸ケーブルを曲げたり変形させたりするような外力が作用することがなく、これらが変形することなく、正確なピッチをそのまま維持することができる。このため、フラットケーブルの先端にコネクタを圧接接続する作業を精度良く行うことができる。
【0012】
【発明の実施の形態】
以下、図面を参照して本発明の好ましい実施形態について説明する。まず、図1〜図3を参照して、本発明を適用するフラットケーブルの構造について説明する。フラットケーブルFCは、図1(A)に示すように、複数本の極細同軸ケーブル20をホールディングテープ27により同一平面上に平行に且つ等間隔で並べて接着保持して構成される。なお、ホールディングテープ27は、複数の同軸ケーブル20を両側から挟持しても良いし、片側にのみ設けても良い。
【0013】
各同軸ケーブル20の構造を図1(B)に示しており、複数本(ここでは7本)の極細電線を寄り合わせて作られた芯線21の周囲に絶縁材料からなる内周側絶縁被覆22を設け、この内周側絶縁被覆22の外周に複数の極細電線を横巻きに設けてシールド層23を設け、このシールド層23の外周に絶縁材料からなる外周側絶縁被覆24を設けて同軸ケーブル20が構成されている。この同軸ケーブル20は非常に細い径に作られており、例えば、芯線20の外径が約0.1mm、全体の外径(外周側絶縁被覆24の外径)が約0.35mm程度に作られている。
【0014】
本発明に係るフラットケーブルは、このような構成のフラットケーブルFCの端部をコネクタにそのまま圧接接続できるような形状に加工して作られるが、この加工成形工程を以下に説明する。まず、図1(A)に示すように、フラットケーブルFCの端部においてホールディングテープ27を剥がして同軸ケーブル20の端部を平行に並んだ状態のまま露出させる。そして、これら同軸ケーブル20の端面から第1の所定距離aの位置(図1(A)においてX−Xで示す位置)においてYAGレーザを照射して外周側絶縁被覆24およびシールド層23のみを切断する加工を行う。
【0015】
そして、このように切断された位置(X−Xで示す位置)より外端側の部分にホールディングテープを貼り付ける等して、同軸ケーブル20における切断位置より外端側を一緒に外方に引き出すと、外周側絶縁被覆24およびシールド層23のみが切断位置から離れて、除去できる。このようにして切断位置から外端側の外周側絶縁被覆24およびシールド層23を除去した状態を図2に示しており、この図から分かるように、先端から切断位置までの間においては内周側絶縁被覆22が露出する。なお、このように内周側絶縁被覆22が露出する部分を圧接部22aと称する。
【0016】
次に、上記切断位置(すなわち、圧接部の内端位置)から第2の所定距離bまでの範囲において、上記切断位置から所定幅cの範囲を除く部分にCOレーザを照射して外周側絶縁被覆24を溶融除去する。この結果、図3(A),(B)に示すように、先端側から第1の所定距離aだけ内周側絶縁被覆22が露出して圧接接続部22aが形成され、その内端端から第2の所定距離bの範囲内において所定幅cのリング状の外周側絶縁被覆24aが残され、残りの部分においてシールド層23が露出した状態となる。このようにシールド層23が露出した部分を接地接続部23aと称する。シールド層23は多数の極細電線を横巻きに設けて形成されているため、シールド層23をそのまま露出させただけでは接地接続部23aにおいて各極細電線がほぐれてバラバラになり易いが、このようにリング状の外周側絶縁被覆24aを残すことにより、各極細電線を保持してバラバラとなるのを防止する。
【0017】
このように端部が加工された状態のフラットケーブルが本発明の実施形態に係るフラットケーブルFCであり、このフラットケーブルFCの端部にコネクタが取り付けられて作られるコネクタ付きケーブルについて、図4および図5を参照して説明する。
【0018】
まず、上記構成のフラットケーブルFCの端部に接続されるプラグコネクタPCの構造について説明する。プラグコネクタPCは、圧接カバー1と、コネクタ本体5とから構成される。図4に示すように、圧接カバー1に上記のように構成されたフラットケーブルFCの端部が取り付けられ、この圧接カバー1をコネクタ本体5に向かって矢印Aの方向に押圧し、図5に示すようなコネクタ付きケーブルが製造される。
【0019】
圧接カバー1は、絶縁材料製のケーブル保持部材2と、ケーブル保持部材2の外面を覆って取り付けられた金属製のシールドカバー3とから構成される。ケーブル保持部材2には、それぞれ上記フラットケーブルFCの同軸ケーブル20の配列ピッチと同一のピッチで並んだ、U字状に形成された複数のケーブル保持溝2a,2bが形成されている。ケーブル保持部材2には、さらに、圧接端子受容溝2cおよびグランド端子受容孔2dが図示のように形成されている。そして。フラットケーブルFCの各圧接部22aをこれらケーブル保持溝2a,2b内に受容させて、図4に示すように、フラットケーブルFCの先端部が圧接カバー1に取り付けられる。
【0020】
コネクタ本体5は、絶縁材料製のコンタクト保持部材6と、このコンタクト保持部材6の下面を覆って一体に取り付けられた金属板からなるグランド板7と、コンタクト保持部材6によりインサートモールドされて保持された複数のコンタクト8とから構成される。コンタクト8はフラットケーブルFCの同軸ケーブル20の配列ピッチと同一のピッチで並んで配設されており、その後端が上方に直角に曲げられて圧接端子部8aが形成されている。圧接端子部8aには上方に開口し、同軸ケーブル20の芯線21の径より若干小さな幅の芯線受容溝8bが形成されている。グランド板7の後端も上方に直角に曲げられてグランド端子受容部7aが形成されており、ここに上方に開口し、同軸ケーブル20のシールド層23の径より若干小さな幅のシールド受容溝7bが形成されている。
【0021】
上述したように、フラットケーブルFCの各圧接部22aをケーブル保持溝22a,22b内に受容させて圧接カバー1に取り付け、この圧接カバー1をコネクタ本体5に向かって矢印Aの方向に押圧すると、圧接端子部8aが圧接部22aの内周側絶縁被覆22を切り裂きながら圧接部22a内に食い込み、芯線21が芯線受容溝8b内に挿入されて芯線21が対応するコンタクト8と電気接続される。同時に、グランド端子受容部7aのシールド受容溝7b内に接地接続部23aが受容保持され、シールド層23がグランド板7と電気接続される。次に、矢印Bで示すようにシールドカバー3を押し込んで、その先端部3aを接地接続部23aに当接させてこれを下方に押圧する。なお、このとき、圧接端子部8aの先端は圧接端子受容溝2c内に入り込み、グランド端子受容部7aの先端はグランド端子受容孔2d内に入り込む。
【0022】
【発明の効果】
以上説明したように、本発明によれば、圧接部の内端から第2の所定長さの範囲において先端側に所定幅の外周側絶縁被覆を残して外周側絶縁被覆が剥がされて接地接続部が形成されており、接地接続部において露出するシールド層は先端側に所定幅を有して残された外周側絶縁被覆により保持されるので、シールド層を形成する多数の横巻き極細電線がバラバラにほぐれることがなく、フラットケーブルの先端にコネクタを圧接接続するとともにシールド層をグランド接続するときの接続信頼性が向上する。また、YAGレーザにより外周側絶縁被覆およびシールド層を切断し、COレーザを照射して外周側絶縁被覆を溶融除去して接地接続部が形成されるので、フラットケーブル先端部における各同軸ケーブルを曲げたり変形させたりするような外力が作用することがく、これらが変形することなく、正確なピッチをそのまま維持することができる。このため、フラットケーブルの先端にコネクタを圧接接続する作業を精度良く行うことができる。
【0023】
本発明のフラットケーブルの製造方法と上述した特許文献1とを対比すると分かるように、本発明では加工工数が格段に少ない簡単な製造方法によりフラットケーブルを製造できる。さらに、特許文献1に示されているグランドバーを半田によりシールド層に固定するいう工程が不要であり、半田を使わないため環境に優しい製造が可能となる。
【図面の簡単な説明】
【図1】本発明のフラットケーブルを加工形成する前の状態のフラットケーブルを示す平面図およびこのフラットケーブルを構成する同軸ケーブルの構造を示す斜視図である。
【図2】本発明に係るフラットケーブルを加工形成する途中段階での端部構造を示す平面図である。
【図3】本発明に係るフラットケーブルの端部構造を示す平面図および斜視図である。
【図4】本発明に係るフラットケーブルが接続されるコネクタを分解して示す斜視図である。
【図5】本発明に係るフラットケーブルの端部にコネクタを接続して構成されるコネクタ付きケーブルの製造途中段階における状態を示す断面図である。
【図6】本発明に係るフラットケーブルの端部にコネクタを接続して構成されるコネクタ付きケーブルの断面図である。
【符号の説明】
1 圧接カバー
5 コネクタ本体
7 グランド板
7a グランド端子受容部
8 コンタクト
8a 圧接端子部
20 同軸ケーブル
21 芯線
22 内周側絶縁被覆
22a 圧接部
23 シールド層
23a 接地接続部
24 外周側絶縁被覆
27 ホールディングテープ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a flat cable configured by holding a plurality of coaxial cables arranged in parallel on the same plane.
[0002]
[Prior art]
Conventionally, a coaxial cable formed by covering a core wire extending linearly with an inner insulating coating, covering the outer periphery of the inner insulating coating with a shield layer, and covering the outer periphery of the shield layer with an outer insulating coating has been generally used. Is known. In recent years, there is a strong tendency to reduce the diameter of a coaxial cable. For example, an extremely thin coaxial cable having a core wire diameter of about 0.1 mm and an overall diameter (diameter of an outer insulating coating) of about 0.35 mm is also used. Have been. There is also known a flat cable formed by holding a plurality of such coaxial cables in parallel on the same plane (for example, see Patent Document 1).
[0003]
Such a flat cable is used with a connector attached to its end. However, when the connector is attached, the outer and inner peripheral insulating coatings and shield layers of the coaxial cable are peeled off at the end of the flat cable and exposed. The core wire is soldered to each contact of the connector, or only the outer insulating coating and the shield layer are peeled to expose the inner insulating coating covering the core wire, and this portion is press-connected to the press-contact portion of the contact. are doing.
[0004]
[Patent Document 1] Japanese Patent Application Laid-Open No. Hei 10-144145
[Problems to be solved by the invention]
By the way, in a flat cable configured using a micro coaxial cable as described above, a core wire is exposed for soldering with a contact, or an inner peripheral insulating coating is exposed for press-fitting connection with a contact. When the coaxial cable itself is very thin, and the core wire, the inner peripheral side insulating coating and the like at the end of the coaxial cable is exposed, since the holding of each coaxial cable with a holding tape or the like is not performed, There is a problem that the tip is easily deformed, and it is very difficult to expose the core wire, the inner peripheral insulating coating, and the like.
[0006]
In Patent Document 1, two sets of ground bars (metal stays) are soldered on the exposed shield layer by peeling off the outer peripheral insulating coating, and these two sets of ground bars are bent to provide a shield between them. Although a method of cutting the layer and removing the shield layer together with the ground bar on the tip side is disclosed, a number of processing steps are required, such as the necessity of soldering the ground bar. There is a problem that it takes.
[0007]
The present invention has been made in view of such a problem, and it is possible to expose the inner peripheral insulating coating for press-fitting connection with a contact at the end of a flat cable by a simple processing operation, and to shield the inner peripheral side at a root side thereof. It is an object of the present invention to provide a flat cable having a structure in which the layers are exposed and the electric wires constituting the shield layer are not loosened.
[0008]
[Means for Solving the Problems]
In order to achieve such an object, in the present invention, a core wire extending linearly, an inner peripheral insulating coating provided over the core wire, a shield layer provided over the outer periphery of the inner insulating coating, and a shield are provided. A flat cable is formed by holding a plurality of coaxial cables, each of which is composed of an outer peripheral insulating coating provided over the outer periphery of the layer, arranged in parallel on the same plane. At the end of the coaxial cable in the flat cable, the outer insulating coating and the shield layer are peeled off within a first predetermined length from the tip to expose the inner insulating coating to form a press-contact portion. The outer peripheral insulating coating is peeled off from the inner end of the press-contact portion in a range of the second predetermined length from the inner end to the distal end side, leaving the outer peripheral insulating coating of a predetermined width, thereby forming a ground connection portion.
[0009]
In addition, a plurality of coaxial cables are held side by side in parallel on the same plane by a holding tape to form a flat cable, and an end of the coaxial cable protrudes outward from an end of the holding tape, and thus protrudes. It is possible to adopt a configuration in which a press-contact portion and a ground connection portion are formed at the end of the coaxial cable.
[0010]
In this flat cable, the outer insulating coating and the shield layer are cut by a YAG laser at a position of a first predetermined length from the end of the coaxial cable, and the outer insulating film positioned in the range of the first predetermined length is cut. The coating and the shield layer are pulled out to expose the inner circumferential insulating coating to form a press-contact portion. Within a range of a second predetermined length from the inner end of the press-contact portion, excluding a range of a predetermined width at the distal end side, It is preferable that a ground connection portion is formed by irradiating a CO 2 laser to the outer peripheral side to melt and remove the outer peripheral insulating coating.
[0011]
In the flat cable having the above configuration, the outer peripheral insulating coating is peeled off while leaving the outer insulating coating of a predetermined width at the distal end in the second predetermined length range from the inner end of the press contact portion to form the ground connection portion. Since the shield layer exposed at the ground connection portion is held by the outer peripheral insulating coating left with a predetermined width on the tip end side, a large number of the horizontally wound ultrafine wires forming the shield layer may be loosened up. Therefore, the connector is press-connected to the tip of the flat cable, and the connection reliability when the shield layer is grounded is improved. In addition, the outer peripheral insulating coating and the shield layer are cut by a YAG laser, and the outer peripheral insulating coating is melted and removed by irradiating a CO 2 laser to form a ground connection portion. An external force that bends or deforms does not act, and these do not deform, so that an accurate pitch can be maintained as it is. Therefore, the operation of press-connecting the connector to the tip of the flat cable can be performed with high accuracy.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. First, the structure of a flat cable to which the present invention is applied will be described with reference to FIGS. As shown in FIG. 1 (A), the flat cable FC is formed by bonding and holding a plurality of micro coaxial cables 20 in parallel and at equal intervals on the same plane by a holding tape 27. The holding tape 27 may hold the plurality of coaxial cables 20 from both sides, or may be provided on only one side.
[0013]
The structure of each coaxial cable 20 is shown in FIG. 1 (B), and an inner peripheral insulating coating 22 made of an insulating material is provided around a core wire 21 formed by bringing together a plurality of (here, seven) ultrafine electric wires. And a shield layer 23 provided with a plurality of microscopic wires wound horizontally on the outer circumference of the inner circumferential insulation coating 22, and an outer circumference insulating coating 24 made of an insulating material provided on the outer circumference of the shield layer 23. 20 are configured. The coaxial cable 20 is made to have a very small diameter. For example, the outer diameter of the core wire 20 is about 0.1 mm, and the entire outer diameter (outer diameter of the outer insulating coating 24) is about 0.35 mm. Have been.
[0014]
The flat cable according to the present invention is manufactured by processing the end of the flat cable FC having such a configuration into a shape that can be pressed and connected to the connector as it is. This processing and forming process will be described below. First, as shown in FIG. 1A, the holding tape 27 is peeled off at the end of the flat cable FC to expose the end of the coaxial cable 20 in a state of being arranged in parallel. Then, a YAG laser is irradiated at a position (the position indicated by XX in FIG. 1A) at a first predetermined distance a from the end faces of the coaxial cables 20 to cut only the outer insulating coating 24 and the shield layer 23. The processing to do.
[0015]
Then, a holding tape is attached to a portion on the outer end side from the cut position (position indicated by XX) in this way, and the outer end side from the cut position in the coaxial cable 20 is pulled out together. Then, only the outer insulating coating 24 and the shield layer 23 can be removed away from the cutting position. FIG. 2 shows a state in which the outer insulating coating 24 and the shield layer 23 on the outer end side have been removed from the cutting position in this manner. As can be seen from FIG. The side insulating coating 22 is exposed. The portion where the inner peripheral insulating coating 22 is exposed is referred to as a press-contact portion 22a.
[0016]
Next, in a range from the cutting position (that is, the inner end position of the press-contact portion) to a second predetermined distance b, a portion excluding a range of a predetermined width c from the cutting position is irradiated with a CO 2 laser to be on an outer peripheral side. The insulating coating 24 is removed by melting. As a result, as shown in FIGS. 3 (A) and 3 (B), the inner peripheral side insulating coating 22 is exposed for a first predetermined distance a from the distal end side to form a press-connecting connection portion 22a, and from the inner end end. Within the range of the second predetermined distance b, the ring-shaped outer peripheral insulating coating 24a having the predetermined width c is left, and the shield layer 23 is exposed in the remaining portion. The portion where the shield layer 23 is exposed is referred to as a ground connection portion 23a. Since the shield layer 23 is formed by arranging a large number of microfine wires in a horizontal winding, each microfine wire is easily loosened at the ground connection portion 23a and easily separated by simply exposing the shield layer 23 as it is. By leaving the ring-shaped outer peripheral side insulating coating 24a, each microwire is held and prevented from falling apart.
[0017]
The flat cable whose end is processed in this way is the flat cable FC according to the embodiment of the present invention. A cable with a connector, which is manufactured by attaching a connector to the end of this flat cable FC, is shown in FIGS. This will be described with reference to FIG.
[0018]
First, the structure of the plug connector PC connected to the end of the flat cable FC having the above configuration will be described. The plug connector PC includes a press-contact cover 1 and a connector main body 5. As shown in FIG. 4, the end of the flat cable FC configured as described above is attached to the press contact cover 1, and the press contact cover 1 is pressed toward the connector body 5 in the direction of the arrow A. A cable with a connector as shown is manufactured.
[0019]
The press contact cover 1 includes a cable holding member 2 made of an insulating material, and a metal shield cover 3 attached so as to cover an outer surface of the cable holding member 2. The cable holding member 2 is formed with a plurality of U-shaped cable holding grooves 2a and 2b arranged at the same pitch as the arrangement pitch of the coaxial cables 20 of the flat cable FC. The cable holding member 2 is further formed with a press contact terminal receiving groove 2c and a ground terminal receiving hole 2d as shown in the drawing. And. The press contact portions 22a of the flat cable FC are received in the cable holding grooves 2a and 2b, and the tip end of the flat cable FC is attached to the press contact cover 1 as shown in FIG.
[0020]
The connector body 5 is insert-molded and held by the contact holding member 6, a ground plate 7 made of a metal plate integrally attached over the lower surface of the contact holding member 6, and a lower surface of the contact holding member 6. And a plurality of contacts 8. The contacts 8 are arranged side by side at the same pitch as the arrangement pitch of the coaxial cables 20 of the flat cable FC, and the rear end thereof is bent upward at a right angle to form a press contact terminal portion 8a. The press contact terminal portion 8a is formed with a core wire receiving groove 8b opening upward and having a width slightly smaller than the diameter of the core wire 21 of the coaxial cable 20. The rear end of the ground plate 7 is also bent upward at a right angle to form a ground terminal receiving portion 7a, which opens upward and has a shield receiving groove 7b having a width slightly smaller than the diameter of the shield layer 23 of the coaxial cable 20. Is formed.
[0021]
As described above, each press contact portion 22a of the flat cable FC is received in the cable holding grooves 22a and 22b and attached to the press contact cover 1. When the press contact cover 1 is pressed toward the connector body 5 in the direction of arrow A, The press contact terminal portion 8a cuts into the press contact portion 22a while tearing the inner peripheral insulating coating 22 of the press contact portion 22a, and the core wire 21 is inserted into the core wire receiving groove 8b, and the core wire 21 is electrically connected to the corresponding contact 8. At the same time, the ground connection portion 23a is received and held in the shield receiving groove 7b of the ground terminal receiving portion 7a, and the shield layer 23 is electrically connected to the ground plate 7. Next, as shown by the arrow B, the shield cover 3 is pushed in, the tip 3a thereof is brought into contact with the ground connection portion 23a, and this is pressed downward. At this time, the tip of the press contact terminal portion 8a enters the press contact terminal receiving groove 2c, and the tip of the ground terminal receiving portion 7a enters the ground terminal receiving hole 2d.
[0022]
【The invention's effect】
As described above, according to the present invention, the outer-side insulating coating is peeled off while leaving the outer-side insulating coating of a predetermined width at the distal end within the second predetermined length from the inner end of the press-contact portion, and the ground connection is made. Portion is formed, and the shield layer exposed at the ground connection portion is held by the outer peripheral insulating coating left with a predetermined width on the tip end side, so that a large number of horizontally wound fine wires forming the shield layer are formed. The connection reliability is improved when the connector is press-connected to the tip of the flat cable and the shield layer is grounded without being loosened. In addition, the outer peripheral insulating coating and the shield layer are cut by a YAG laser, and the outer peripheral insulating coating is melted and removed by irradiating a CO 2 laser to form a ground connection portion. An external force that bends or deforms does not act, and these can be maintained at an accurate pitch without being deformed. Therefore, the operation of press-connecting the connector to the tip of the flat cable can be performed with high accuracy.
[0023]
As can be seen from a comparison between the flat cable manufacturing method of the present invention and the above-mentioned Patent Document 1, the flat cable can be manufactured by a simple manufacturing method in which the number of processing steps is significantly reduced. Further, the step of fixing the ground bar to the shield layer by soldering, which is shown in Patent Document 1, is not required, and environmentally friendly manufacturing is possible because no solder is used.
[Brief description of the drawings]
FIG. 1 is a plan view showing a flat cable before a flat cable according to the present invention is processed and formed, and a perspective view showing a structure of a coaxial cable constituting the flat cable.
FIG. 2 is a plan view showing an end structure in the middle of processing and forming a flat cable according to the present invention.
FIG. 3 is a plan view and a perspective view showing an end structure of a flat cable according to the present invention.
FIG. 4 is an exploded perspective view showing a connector to which the flat cable according to the present invention is connected.
FIG. 5 is a cross-sectional view showing a state in the middle of manufacturing a cable with a connector configured by connecting a connector to an end of the flat cable according to the present invention.
FIG. 6 is a cross-sectional view of a cable with a connector configured by connecting a connector to an end of a flat cable according to the present invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 pressure contact cover 5 connector body 7 ground plate 7a ground terminal receiving portion 8 contact 8a pressure contact terminal portion 20 coaxial cable 21 core wire 22 inner peripheral side insulation coating 22a pressure contact portion 23 shield layer 23a ground connection portion 24 outer peripheral insulation coating 27 holding tape

Claims (3)

複数の同軸ケーブルを同一平面上に平行に並べて保持してなるフラットケーブルであって、
前記同軸ケーブルが、直線状に延びる芯線、前記芯線を覆って設けられた内周側絶縁被覆、前記内周側絶縁被覆の外周を覆って設けられたシールド層、および前記シールド層の外周を覆って設けられた外周側絶縁被覆から構成されるフラットケーブルにおいて、
前記同軸ケーブルの端部において、先端から第1の所定長さの範囲において前記外周側絶縁被覆および前記シールド層が剥がされて前記内周側絶縁被覆が露出して圧接部が形成されており、前記圧接部の内端から第2の所定長さの範囲において先端側に所定幅の前記外周側絶縁被覆を残して前記外周側絶縁被覆が剥がされて接地接続部が形成されていることを特徴とするフラットケーブル。
A flat cable in which a plurality of coaxial cables are arranged and held in parallel on the same plane,
The coaxial cable has a core wire extending linearly, an inner peripheral insulating coating provided over the core wire, a shield layer provided over the outer peripheral surface of the inner peripheral insulating coating, and a cover layer covering the outer peripheral surface of the shield layer. In the flat cable composed of the outer insulating coating provided on the
At the end of the coaxial cable, the outer peripheral side insulating coating and the shield layer are peeled off within a range of a first predetermined length from the distal end, and the inner peripheral side insulating coating is exposed to form a press-contact portion, The outer peripheral side insulating coating is peeled off while leaving the outer peripheral side insulating coating of a predetermined width at the front end in a range of a second predetermined length from the inner end of the press contact portion, and a ground connection portion is formed. And flat cable.
前記複数の同軸ケーブルがホールディングテープにより同一平面上に平行に並べて保持されてフラットケーブルが形成され、
前記同軸ケーブルの端部が前記ホールディングテープの端部より外方に突出しており、このように突出する前記同軸ケーブルの端部において前記圧接部および前記接地接続部が形成されていることを特徴とする請求項1に記載のフラットケーブル。
The plurality of coaxial cables are held side by side in parallel on the same plane by a holding tape to form a flat cable,
An end of the coaxial cable protrudes outward from an end of the holding tape, and the press-contact portion and the ground connection portion are formed at the end of the coaxial cable protruding in this manner. The flat cable according to claim 1.
前記同軸ケーブルの先端から前記第1の所定長さの位置において、YAGレーザにより前記外周側絶縁被覆および前記シールド層を切断し、前記第1の所定長さの範囲に位置する前記外周側絶縁被覆および前記シールド層を引き抜いて前記内周側絶縁被覆を露出させて前記圧接部が形成され、
前記圧接部の内端から第2の所定長さの範囲において、先端側の所定幅の範囲を除く領域内にCOレーザを照射して前記外周側絶縁被覆を溶融除去して前記接地接続部が形成されることを特徴とする請求項1に記載のフラットケーブル。
At the position of the first predetermined length from the tip of the coaxial cable, the outer peripheral side insulating coating and the shield layer are cut by a YAG laser, and the outer peripheral side insulating coating located within the first predetermined length range And the pressure contact portion is formed by extracting the shield layer and exposing the inner peripheral side insulating coating,
In a second predetermined length range from the inner end of the press-contact portion, a region other than a predetermined width range on the distal end side is irradiated with a CO 2 laser to melt and remove the outer peripheral side insulating coating to form the ground connection portion. The flat cable according to claim 1, wherein the flat cable is formed.
JP2003064293A 2003-03-11 2003-03-11 Flat cable Expired - Lifetime JP3709992B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2003064293A JP3709992B2 (en) 2003-03-11 2003-03-11 Flat cable
TW93102491A TWI336892B (en) 2003-03-11 2004-02-04 Flat cable
CNB2004100076859A CN100394514C (en) 2003-03-11 2004-02-24 Flat cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003064293A JP3709992B2 (en) 2003-03-11 2003-03-11 Flat cable

Publications (3)

Publication Number Publication Date
JP2004273333A true JP2004273333A (en) 2004-09-30
JP3709992B2 JP3709992B2 (en) 2005-10-26
JP2004273333A5 JP2004273333A5 (en) 2005-10-27

Family

ID=33125615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003064293A Expired - Lifetime JP3709992B2 (en) 2003-03-11 2003-03-11 Flat cable

Country Status (3)

Country Link
JP (1) JP3709992B2 (en)
CN (1) CN100394514C (en)
TW (1) TWI336892B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1681683A2 (en) * 2005-01-17 2006-07-19 Junkosha, Inc. Flat cable
JP2007020342A (en) * 2005-07-08 2007-01-25 Shibuya Kogyo Co Ltd Coaxial cable processing method and its device
JP2007280765A (en) * 2006-04-06 2007-10-25 Yokowo Co Ltd Electric connector
US10250005B2 (en) 2014-02-24 2019-04-02 Hubbell Incorporated Cable installation aid for multi-strand electrical conductors

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5032006B2 (en) * 2005-07-05 2012-09-26 株式会社潤工社 Flat cable
CN102684110B (en) * 2011-03-15 2015-04-01 阿尔卑斯电气株式会社 Method for removing coated material of flat cable
TWI569551B (en) * 2015-08-06 2017-02-01 深圳市南士科技股份有限公司 A method for producing cables with water resistant core wire structures
CN109994280A (en) * 2017-12-29 2019-07-09 深圳市联嘉祥科技股份有限公司 A kind of novel portable cable
WO2020132517A1 (en) * 2018-12-21 2020-06-25 3M Innovative Properties Company Electrical power cable preparation system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3719693B2 (en) * 1996-11-07 2005-11-24 住友電気工業株式会社 Manufacturing method of processed wire products
JPH11353955A (en) * 1998-06-05 1999-12-24 Ace Five:Kk Flat cable terminal structure and connector for connecting same
US6326548B1 (en) * 1999-07-09 2001-12-04 Nissei Electric Co., Ltd. End-processed coaxial cable structures and methods for producing the same
JP4133980B2 (en) * 2004-09-09 2008-08-13 ケル株式会社 Flat cable

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1681683A2 (en) * 2005-01-17 2006-07-19 Junkosha, Inc. Flat cable
EP1681683A3 (en) * 2005-01-17 2007-10-17 Junkosha, Inc. Flat cable
JP2007020342A (en) * 2005-07-08 2007-01-25 Shibuya Kogyo Co Ltd Coaxial cable processing method and its device
JP2007280765A (en) * 2006-04-06 2007-10-25 Yokowo Co Ltd Electric connector
US10250005B2 (en) 2014-02-24 2019-04-02 Hubbell Incorporated Cable installation aid for multi-strand electrical conductors

Also Published As

Publication number Publication date
TW200506972A (en) 2005-02-16
TWI336892B (en) 2011-02-01
CN100394514C (en) 2008-06-11
JP3709992B2 (en) 2005-10-26
CN1530965A (en) 2004-09-22

Similar Documents

Publication Publication Date Title
JP2511123B2 (en) Crimping terminal and connection method of crimping terminal and electric wire
JP5391173B2 (en) Wire and terminal connection structure and connection device, connection method, wire harness
JP4274381B2 (en) Terminal connection method for micro coaxial cable
JP3015942B2 (en) High-speed transmission line shield terminator
JP5654242B2 (en) Electrical wire terminal treatment method
US6184471B1 (en) Connecting structure and method for a shielded cable
JPH0645035A (en) Connector for coaxial cable
JP3015945B2 (en) High-speed transmission cable shield termination equipment
CN111740254A (en) Cable assembly, method and apparatus for manufacturing cable assembly, and electrical terminal for cable assembly
JP2000260497A (en) Connection method and connector of thin wire coaxial cable
JPH07302625A (en) Terminal of insulating material displacement pushing-away type and its manufacture
JP4031288B2 (en) Joining method for welding coated wires to terminals
JP2004273333A (en) Flat cable
WO2017195547A1 (en) Terminal-equipped electric wire, and terminal
US5358426A (en) Connector assembly for discrete wires of a shielded cable
JP2008084630A (en) Manufacturing method of electric wire with terminal, and electric wire with terminal
JP2008210563A (en) Multi-core coaxial cable and method of manufacturing multi-core coaxial cable
JP4133980B2 (en) Flat cable
JP2009037748A (en) Cable connector and cable connection method
JP3244432B2 (en) Electrical connector cable connection structure
JP2007048696A (en) Cable connecting contact and method for connecting cable using contact
EP0570832A1 (en) Connector housing assembly for discrete wires
JP3942564B2 (en) Connector for coaxial cable
JP4144855B2 (en) Wire processed product and manufacturing method thereof
JP2004134275A (en) Connecting terminal and its manufacturing method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20041027

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050704

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20050704

A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20050722

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050802

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050803

R150 Certificate of patent or registration of utility model

Ref document number: 3709992

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080819

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090819

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100819

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110819

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120819

Year of fee payment: 7

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130819

Year of fee payment: 8

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term