JP2004303692A - Connector for coaxial cables - Google Patents

Connector for coaxial cables Download PDF

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Publication number
JP2004303692A
JP2004303692A JP2003098066A JP2003098066A JP2004303692A JP 2004303692 A JP2004303692 A JP 2004303692A JP 2003098066 A JP2003098066 A JP 2003098066A JP 2003098066 A JP2003098066 A JP 2003098066A JP 2004303692 A JP2004303692 A JP 2004303692A
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Japan
Prior art keywords
connector
coaxial cable
braided wire
crimping portion
crimping
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.)
Pending
Application number
JP2003098066A
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Japanese (ja)
Inventor
Isao Kameyama
勲 亀山
Hiroshi Morikawa
大史 森川
Tatsuya Hayashi
林　　達也
Masami Sakai
正美 酒井
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.)
Honda Tsushin Kogyo Co Ltd
Yazaki Corp
Original Assignee
Honda Tsushin Kogyo Co Ltd
Yazaki 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 Honda Tsushin Kogyo Co Ltd, Yazaki Corp filed Critical Honda Tsushin Kogyo Co Ltd
Priority to JP2003098066A priority Critical patent/JP2004303692A/en
Publication of JP2004303692A publication Critical patent/JP2004303692A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector used as a shield terminal for a coaxial cable in which transmission characteristics of the coaxial cable is improved. <P>SOLUTION: The connector 1 comprises a connector body 1c for holding an exposed core cable at the end of a coaxial cable, a braided wire crimping portion 1b for crimping a braided wire of the coaxial cable and outer sheath crimping portion 1a for crimping the outer sheath of the coaxial cable which are coupled to each other. Between the connector body and the braided wire crimping portion, a relay 1e for connecting both the portion, and an extension part 1h for shield extendedly provided from the connector body 1c side are arranged. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、同軸ケーブル用のシールドターミナルであるコネクタに係り、詳しくは、同軸ケーブルの伝送特性を改良した同軸ケーブル用コネクタに関する。
【０００２】
【従来の技術】
従来において、同軸ケーブル用コネクタ１０は、図４（Ａ），（Ｂ）に示すように、全体が金属製の導体であり、同軸ケーブル１１の外皮１１ａ部分をかしめて保持するケーブル外皮圧着部１０ａと、前記同軸ケーブルの外皮が剥がされて露出した編組線１１ｂを圧着するケーブル編組線圧着部１０ｂと、同軸ケーブル１１の芯線１１ｃに取り付けた中心コンタクト１２を中心部に挿通させて保持する絶縁物１０ｄを外部導体１０ｆで保持してなるコネクタ本体１０ｃとから概ね構成されている。前記ケーブル編組線圧着部１０ｂとコネクタ本体１０ｃの外部導体１０ｆとは、中継部１０ｅで一体に連結されている。
【０００３】
前記同軸ケーブル用コネクタ１０を使用する際には、同軸ケーブル１１の外皮１１ａを剥がし、更に編組線１１ｂ及び絶縁物１１ｄを剥がして芯線１１ｃを露出させて中心コンタクト１２を取り付けたものを、前記コネクタ本体１０ｃに挿入し、前記ケーブル外皮圧着部１０ａ及びケーブル編組線圧着部１０ｂをかしめてなるものが知られている（例えば、特許文献１参照。）。
【０００４】
【特許文献１】
特開平１１−２７３７９８号公報（第２頁乃至第４頁、図１乃至図３）
【０００５】
【発明が解決しようとする課題】
しかしながら、前記同軸ケーブル用コネクタ１０による、同軸ケーブル１１の伝送特性について考慮すると、前記ケーブル外皮圧着部１０ａ及びケーブル編組線圧着部１０ｂにおいてはその周囲全体が金属製の導電体で囲繞されてシールドされているのに対して、図４（Ｂ）に示すように、中継部１０ｅの部分においては、図４（Ｃ）に示すように、周全体の約１／４〜１／５程度しか金属導体でシールドされておらず、残りの部分が開口している。
【０００６】
よって、前記金属導体で全部が覆われていない中継部１０ｅがあることで、信号とグランド間の電界の収束が良好に行われず、特性インピーダンスの乱れ、電界（電波）の漏れが生じてしまい、また、帰路電流も中継部１０ｅの片側に集中することで、ＶＳＷＲ（Ｖｏｌｔａｇｅ Ｓｔａｎｄｉｎｇ Ｗａｖｅ Ｒａｔｉｏ ：電圧定在波比）・挿入損失等の伝送特性に悪影響をおよぼすという課題がある。本発明に係る同軸ケーブル用コネクタは、このような課題を解決するために提案されたものである。
【０００７】
【課題を解決するための手段】
上記課題を解決するために、本発明に係る同軸ケーブル用コネクタの要旨は、同軸ケーブルの端部において露出された芯線が保持されるコネクタ本体と、前記同軸ケーブルの編組線をかしめる編組線圧着部と、当該同軸ケーブルの外皮をかしめる外皮圧着部とが連結されてなるコネクタであって、前記コネクタ本体と前記編組線圧着部との間には、両者を連結する中継部と、前記コネクタ本体側から延設されたシールド用延設部とが配設されていることである。
【０００８】
前記シールド用延設部は、中継部と軸心を中心にして略対称に配設されると共に、編組線圧着部と重畳可能にすべく延設され、編組線を前記編組線圧着部でかしめる際には、前記シールド用延設部も編組線とともにかしめられることを含むものである。
【０００９】
本発明に係る同軸ケーブル用コネクタによれば、コネクタ本体と編組線圧着部との間に、シールド用延設部と中継部との二つの導電体が配設されて、この部分における周方向の開口部の割合が減少して、導電体（外部導体）で囲繞される部分が多くなり、シールド効果が増大する。また、前記シールド用延設部も編組線とともにかしめられるようにして、電界の収束や帰路電流の流れがバランス良くなり、特性インピーダンスの乱れが改善されて、電界（電波）の漏れも減少する。更に、シールド用延設部がかしめられて、機械的強度も増大する。
【００１０】
【発明の実施の形態】
次に、本発明に係る同軸ケーブル用コネクタ１について、図面を参照して説明する。従来例に対応する部分には、理解を容易にするため、従来例と同一の符号を付けて説明する。前記同軸ケーブル用コネクタ１は、図１に示すように、同軸ケーブル１１の端部において、絶縁物１１ｄを剥がして露出された芯線１１ｃが保持される円筒状のコネクタ本体１ｃと、前記同軸ケーブル１１の編組線１１ｂをかしめる編組線圧着部１ｂと、当該同軸ケーブル１１の外皮１１ａをかしめる外皮圧着部１ａとが連結されてなる。
【００１１】
前記コネクタ本体１ｃには、円筒状の絶縁物１ｄが内包され、その絶縁物１ｄには、軸心に沿って中心コンタクト挿入用の貫通孔１ｇが穿設されている。
そして、前記コネクタ本体１ｃと前記編組線圧着部１ｂとの間には、両者を連結する中継部１ｅと、前記コネクタ本体１ｃ側から延設されたシールド用延設部１ｈとが配設されている。
【００１２】
前記シールド用延設部１ｈは、図１（Ｃ）に示すように、中継部１ｅと軸心を中心にして略対称に配設されると共に、編組線圧着部１ｂと重畳可能にすべく、中心部に近づくように細い首部１ｉがあって、それから略水平に曲げ加工され、重畳部分が円弧状に加工されて、延設されている。また、前記編組線１１ｂを前記編組線圧着部１ｂでかしめる際には、図１（Ｂ）に示すように、前記シールド用延設部１ｈも編組線１１ｂとともに、かしめられるものである。
【００１３】
このような、同軸ケーブル用コネクタ１の実施例を、図２乃至図３に示す。この同軸ケーブル用コネクタ２，３を使用する際には、同軸ケーブル１１の外皮１１ａを剥がし、更に編組線１１ｂ及び絶縁物１１ｄを剥がして芯線１１ｃを露出させて中心コンタクト１２を取り付けたものを、前記コネクタ本体２ｃ，３ｃに挿入し、前記ケーブル外皮圧着部２ａ，３ａ及びケーブル編組線圧着部２ｂ，３ｂをかしめ、各々のシールド用延設部２ｈ，３ｈも編組線１１ｂとともにかしめるものである。
【００１４】
これによる同軸ケーブル１１用のコネクタ２，３の伝送特性として、ＶＳＷＲを測定すると、以下の表１に示す結果となった。
【表１】

Figure 2004303692
【００１５】
このように、本発明に係る同軸ケーブル用コネクタ１では、従来例のものに比較して、ＶＳＷＲが各周波数において、いずれも１．０により近い。よって、同軸ケーブル用コネクタの伝送特性が良くなっていることが判る。
【００１６】
【発明の効果】
上記説明したように、本発明に係る同軸ケーブル用コネクタは、同軸ケーブルの端部において露出された芯線が保持されるコネクタ本体と、前記同軸ケーブルの編組線をかしめる編組線圧着部と、当該同軸ケーブルの外皮をかしめる外皮圧着部とが連結されてなるコネクタであって、前記コネクタ本体と前記編組線圧着部との間には、両者を連結する中継部と、前記コネクタ本体側から延設されたシールド用延設部とが配設されているので、コネクタ本体と前記編組線圧着部との間における外部導体の囲繞範囲が増大して、コネクタの伝送特性が改善されると言う優れた効果を奏するものである。
【００１７】
前記シールド用延設部は、中継部と軸心を中心にして略対称に配設されると共に、編組線圧着部と重畳可能にすべく延設され、編組線を前記編組線圧着部でかしめる際には、前記シールド用延設部も編組線とともにかしめられるので、電界の収束や帰路電流の流れがバランス良くなり、特性インピーダンスの乱れが改善される。更に、シールド用延設部がかしめられて、機械的強度が増大し、腰の強いコネクタとなって製品品質が向上する。
【図面の簡単な説明】
【図１】本発明に係る同軸ケーブル用コネクタの断面図（Ａ）、同使用状態の断面図（Ｂ）、同図（Ｂ）におけるＢ−Ｂ線に沿った断面図（Ｃ）である。
【図２】同本発明に係る同軸ケーブル用コネクタに係る実施例の斜視図（Ａ）、同側面図（Ｂ），（Ｃ）、同断面図（Ｄ）である。
【図３】同本発明に係る同軸ケーブル用コネクタに係る他の実施例の斜視図（Ａ）、同側面図（Ｂ），（Ｃ）、同断面図（Ｄ）である。
【図４】従来例に係る同軸ケーブル用コネクタの断面図（Ａ）、同使用状態の断面図（Ｂ）、同図（Ｂ）におけるＡ−Ａ線に沿った断面図（Ｃ）である。
【符号の説明】
１ 同軸ケーブル用コネクタ、 １ａ 外皮圧着部、
１ｂ 編組線圧着部、 １ｃ コネクタ本体、
１ｄ 絶縁物、 １ｅ 中継部、
１ｆ 外部導体、 １ｇ 貫通孔、
１ｈ シールド用延設部、 １ｉ 首部、
２ 同軸ケーブル用コネクタ、 ２ａ 外皮圧着部、
２ｂ 編組線圧着部、 ２ｃ コネクタ本体、
２ｅ 中継部、 ２ｈ シールド用延設部、
２ｉ 首部、
３ 同軸ケーブル用コネクタ、 ３ａ 外皮圧着部、
３ｂ 編組線圧着部、 ３ｃ コネクタ本体、
３ｅ 中継部、 ３ｈ シールド用延設部、
３ｉ 首部、
１０ 従来例に係る同軸ケーブル用コネクタ、
１１ 同軸ケーブル、 １１ａ 外皮、
１１ｂ 編組線、 １１ｃ 芯線、
１１ｄ 絶縁物、 １２ コンタクト。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connector that is a shield terminal for a coaxial cable, and more particularly, to a connector for a coaxial cable having improved transmission characteristics of the coaxial cable.
[0002]
[Prior art]
Conventionally, as shown in FIGS. 4A and 4B, the coaxial cable connector 10 is a metal conductor as a whole, and is a cable outer crimping portion 10a for caulking and holding the outer cover 11a of the coaxial cable 11. A cable braided wire crimping portion 10b for crimping the exposed braided wire 11b of the coaxial cable, and an insulator for inserting and holding the center contact 12 attached to the core wire 11c of the coaxial cable 11 at the center. 10d is generally constituted by a connector main body 10c holding the outer conductor 10d by an external conductor 10f. The cable braided wire crimping portion 10b and the outer conductor 10f of the connector body 10c are integrally connected by a relay portion 10e.
[0003]
When using the coaxial cable connector 10, the coaxial cable 11 is obtained by peeling the outer sheath 11a, peeling off the braided wire 11b and the insulator 11d, exposing the core wire 11c, and attaching the center contact 12 to the connector. A cable crimping portion 10a and a cable braided wire crimping portion 10b which are inserted into a main body 10c and caulked are known (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-11-273798 (pages 2 to 4, FIGS. 1 to 3)
[0005]
[Problems to be solved by the invention]
However, in consideration of the transmission characteristics of the coaxial cable 11 by the coaxial cable connector 10, the entire periphery of the cable outer crimping portion 10a and the cable braided wire crimping portion 10b is shielded by being surrounded by a metal conductor. On the other hand, as shown in FIG. 4B, in the portion of the relay portion 10e, as shown in FIG. 4C, only about 1/4 to 1/5 of the entire circumference Not shielded and the rest is open.
[0006]
Therefore, the presence of the relay portion 10e that is not entirely covered with the metal conductor prevents the electric field between the signal and the ground from converging satisfactorily, causing disturbance in characteristic impedance and leakage of the electric field (radio wave). In addition, there is a problem that the return current is also concentrated on one side of the relay unit 10e, thereby adversely affecting transmission characteristics such as VSWR (Voltage Standing Wave Ratio) and insertion loss. The coaxial cable connector according to the present invention has been proposed to solve such a problem.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, a gist of a connector for a coaxial cable according to the present invention includes a connector body in which a core exposed at an end of the coaxial cable is held, and a braided wire crimping for crimping a braided wire of the coaxial cable. A connector, and a sheath crimping portion for caulking the outer sheath of the coaxial cable, wherein a connector is provided between the connector main body and the braided wire crimping portion, and a relay portion for coupling the two, and the connector That is, a shield extension extending from the main body side is provided.
[0008]
The shield extension portion is disposed substantially symmetrically with respect to the relay portion and the axis, and is extended so as to be superimposable with the braided wire crimping portion. When tightening, it includes that the shield extension is also swaged together with the braided wire.
[0009]
According to the connector for a coaxial cable according to the present invention, between the connector body and the braided wire crimping portion, the two conductors of the extended portion for shielding and the relay portion are disposed, and the circumferential direction in this portion is The proportion of the opening decreases, and the portion surrounded by the conductor (external conductor) increases, and the shielding effect increases. Also, the shield extension is swaged together with the braided wire, so that the convergence of the electric field and the flow of the return current are well-balanced, the disturbance of the characteristic impedance is improved, and the leakage of the electric field (radio wave) is reduced. Further, the shield extension is swaged, and the mechanical strength is increased.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, the coaxial cable connector 1 according to the present invention will be described with reference to the drawings. Portions corresponding to the conventional example will be described with the same reference numerals as in the conventional example for easy understanding. As shown in FIG. 1, the coaxial cable connector 1 includes a cylindrical connector main body 1c at an end of the coaxial cable 11 where an insulating material 11d is peeled off and an exposed core 11c is held. The braided wire crimping portion 1b for crimping the braided wire 11b and the outer skin crimping portion 1a for caulking the outer sheath 11a of the coaxial cable 11 are connected.
[0011]
The connector body 1c contains a cylindrical insulator 1d, and the insulator 1d is provided with a through hole 1g for inserting a center contact along the axis.
And, between the connector main body 1c and the braided wire crimping portion 1b, a relay portion 1e for connecting the two and a shielding extension portion 1h extending from the connector main body 1c side are arranged. I have.
[0012]
As shown in FIG. 1 (C), the shield extending portion 1h is disposed substantially symmetrically with respect to the relay portion 1e about the axis, and is overlapped with the braided wire crimping portion 1b. There is a thin neck portion 1i approaching the center, and it is bent substantially horizontally from there, and the overlapping portion is processed into an arc shape and extended. When the braided wire 11b is crimped by the braided wire crimping portion 1b, as shown in FIG. 1B, the shield extension 1h is also crimped together with the braided wire 11b.
[0013]
An embodiment of such a coaxial cable connector 1 is shown in FIGS. When the coaxial cable connectors 2 and 3 are used, the coaxial cable 11 with the outer skin 11a peeled off, the braided wire 11b and the insulator 11d peeled off to expose the core wire 11c, and the central contact 12 is attached. It is inserted into the connector main bodies 2c, 3c, and the cable sheath crimping parts 2a, 3a and the cable braided wire crimping parts 2b, 3b are crimped, and the respective shield extension parts 2h, 3h are also crimped together with the braided wire 11b. .
[0014]
When the VSWR was measured as the transmission characteristics of the connectors 2 and 3 for the coaxial cable 11, the results shown in Table 1 below were obtained.
[Table 1]
Figure 2004303692
[0015]
As described above, in the coaxial cable connector 1 according to the present invention, the VSWR is closer to 1.0 at each frequency than the conventional example. Therefore, it is understood that the transmission characteristics of the coaxial cable connector are improved.
[0016]
【The invention's effect】
As described above, the connector for a coaxial cable according to the present invention includes a connector main body in which a core exposed at an end of the coaxial cable is held, a braided wire crimping portion for caulking a braided wire of the coaxial cable, A connector comprising an outer sheath crimping portion for caulking the outer sheath of a coaxial cable, the connector being connected between the connector main body and the braided wire crimping portion, and a relay extending from the connector main body side. Since the provided shield extension is provided, the surrounding area of the outer conductor between the connector body and the braided wire crimping portion is increased, and the transmission characteristic of the connector is improved. It has the effect that it has.
[0017]
The shield extension portion is disposed substantially symmetrically with respect to the relay portion and the axis, and is extended so as to be superimposable with the braided wire crimping portion. When tightening, the shield extension is also swaged together with the braided wire, so that the convergence of the electric field and the flow of the return current are well-balanced, and the disturbance of the characteristic impedance is improved. Furthermore, the extension for the shield is swaged, the mechanical strength is increased, and the connector is made stiff, and the product quality is improved.
[Brief description of the drawings]
FIG. 1 is a sectional view (A) of a connector for a coaxial cable according to the present invention, a sectional view (B) of the same use state, and a sectional view (C) along line BB in FIG.
FIG. 2 is a perspective view (A), side views (B), (C), and a sectional view (D) of an embodiment of the coaxial cable connector according to the present invention.
FIG. 3 is a perspective view (A), side views (B), (C), and a cross-sectional view (D) of another embodiment of the coaxial cable connector according to the present invention.
4A is a cross-sectional view of a coaxial cable connector according to a conventional example, FIG. 4B is a cross-sectional view in the same use state, and FIG. 4B is a cross-sectional view along line AA in FIG.
[Explanation of symbols]
1 Coaxial cable connector, 1a Skin crimping part,
1b braided wire crimping section, 1c connector body,
1d insulator, 1e relay,
1f outer conductor, 1g through hole,
1h Shield extension, 1i neck,
2 Coaxial cable connector, 2a Skin crimping part,
2b braided wire crimping section, 2c connector body,
2e relay, 2h shield extension,
2i neck,
3 Coaxial cable connector, 3a Skin crimping part,
3b braided wire crimping section, 3c connector body,
3e relay part, 3h shield extension part,
3i neck,
10 A connector for a coaxial cable according to a conventional example,
11 Coaxial cable, 11a sheath,
11b braided wire, 11c core wire,
11d insulator, 12 contacts.

Claims (2)

同軸ケーブルの端部において露出された芯線が保持されるコネクタ本体と、前記同軸ケーブルの編組線をかしめる編組線圧着部と、当該同軸ケーブルの外皮をかしめる外皮圧着部とが連結されてなるコネクタであって、
前記コネクタ本体と前記編組線圧着部との間には、両者を連結する中継部と、前記コネクタ本体側から延設されたシールド用延設部とが配設されていること、
を特徴とする同軸ケーブル用コネクタ。A connector main body holding an exposed core wire at an end of the coaxial cable, a braided wire crimping portion for caulking a braided wire of the coaxial cable, and an outer skin crimping portion for caulking the outer sheath of the coaxial cable are connected. A connector,
Between the connector body and the braided wire crimping portion, a relay portion for connecting the two, and a shield extension portion extending from the connector body side are provided,
A connector for a coaxial cable, characterized in that: シールド用延設部は、中継部と軸心を中心にして略対称に配設されると共に、編組線圧着部と重畳可能にすべく延設され、編組線を前記編組線圧着部でかしめる際には、前記シールド用延設部も編組線とともにかしめられること、
を特徴とする請求項１に記載の同軸ケーブル用コネクタ。The shield extension is disposed substantially symmetrically with respect to the relay portion and the axis, and is extended so as to be superimposable with the braided wire crimping portion, and the braided wire is crimped by the braided wire crimping portion. In such a case, the shield extension is also caulked together with the braided wire,
The coaxial cable connector according to claim 1, wherein:
JP2003098066A 2003-04-01 2003-04-01 Connector for coaxial cables Pending JP2004303692A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008198530A (en) * 2007-02-14 2008-08-28 Auto Network Gijutsu Kenkyusho:Kk External conductor terminal and shield connector
JP2009176538A (en) * 2008-01-23 2009-08-06 Yazaki Corp Connector terminal with shield electric wire
JP2010267473A (en) * 2009-05-14 2010-11-25 Murata Mfg Co Ltd Coaxial line and coaxial connector
JP2011049061A (en) * 2009-08-27 2011-03-10 Yazaki Corp Coaxial cable connector
WO2018221354A1 (en) * 2017-05-29 2018-12-06 株式会社村田製作所 L-type coaxial connector, and l-type coaxial connector with coaxial cable

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008198530A (en) * 2007-02-14 2008-08-28 Auto Network Gijutsu Kenkyusho:Kk External conductor terminal and shield connector
JP2009176538A (en) * 2008-01-23 2009-08-06 Yazaki Corp Connector terminal with shield electric wire
JP2010267473A (en) * 2009-05-14 2010-11-25 Murata Mfg Co Ltd Coaxial line and coaxial connector
JP2011049061A (en) * 2009-08-27 2011-03-10 Yazaki Corp Coaxial cable connector
WO2018221354A1 (en) * 2017-05-29 2018-12-06 株式会社村田製作所 L-type coaxial connector, and l-type coaxial connector with coaxial cable
CN110663143A (en) * 2017-05-29 2020-01-07 株式会社村田制作所 L-shaped coaxial connector and L-shaped coaxial connector with coaxial cable
CN110663143B (en) * 2017-05-29 2021-03-23 株式会社村田制作所 L-shaped coaxial connector and L-shaped coaxial connector with coaxial cable

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