JP6677351B2 - Board mounted coaxial connector - Google Patents

Board mounted coaxial connector Download PDF

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JP6677351B2
JP6677351B2 JP2019525233A JP2019525233A JP6677351B2 JP 6677351 B2 JP6677351 B2 JP 6677351B2 JP 2019525233 A JP2019525233 A JP 2019525233A JP 2019525233 A JP2019525233 A JP 2019525233A JP 6677351 B2 JP6677351 B2 JP 6677351B2
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terminal
internal
coaxial connector
center conductor
board
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JPWO2018230251A1 (en
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知尚 山木
知尚 山木
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Murata Manufacturing Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/53—Fixed connections for rigid printed circuits or like structures connecting to cables except for flat or ribbon cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Description

本発明は、基板実装型同軸コネクタおよびその製造方法に関する。   The present invention relates to a board-mounted coaxial connector and a method for manufacturing the same.

従来より、基板に実装された状態で使用される基板実装型同軸コネクタが知られている（例えば、特許文献１参照）。   2. Description of the Related Art Conventionally, a board-mounted coaxial connector used in a state of being mounted on a board is known (for example, see Patent Document 1).

特許文献１の基板実装型同軸コネクタは、コンタクトピンとしての中心導体を有する内部端子と、中心導体の周囲に配置される筒状の外部導体を有する外部端子と、内部端子と外部端子の間に配置される絶縁性部材とを備える。当該同軸コネクタは、内部端子および外部端子を介して基板に実装される。基板に実装された状態の同軸コネクタを相手方のコネクタに接続する際には、内部端子の中心導体および外部端子の外部導体を相手方コネクタの対応する各端子に嵌合させる。   The board-mounted coaxial connector of Patent Literature 1 has an internal terminal having a center conductor as a contact pin, an external terminal having a cylindrical outer conductor disposed around the center conductor, and a connector between the internal terminal and the external terminal. An insulating member to be arranged. The coaxial connector is mounted on a board via internal terminals and external terminals. When connecting the coaxial connector mounted on the board to the mating connector, the center conductor of the internal terminal and the outer conductor of the external terminal are fitted to corresponding terminals of the mating connector.

このような構成において、内部端子の中心導体は絞り加工による筒形状を有しており、その基端部には径方向に広がった鍔部（拡径部）が形成されている。鍔部を囲むように絶縁性部材が配置されることで、鍔部は内部端子の抜け止めとして機能している。   In such a configuration, the center conductor of the internal terminal has a cylindrical shape formed by drawing, and a flange portion (diameter enlarged portion) that expands in the radial direction is formed at the base end. By disposing the insulating member so as to surround the flange, the flange functions as a stopper for the internal terminal.

特許第３１６１２８１号Patent No. 3161281

近年、同軸コネクタが実装される基板の多層化が進んでいる。このような基板の内部には複数の電極（グランド電極や信号電極）による層が設けられている。基板の多層化が進むほど、複数の電極による層同士の間隔や、同軸コネクタの端子と電極による層との距離も近くなる。特に、同軸コネクタの端子と電極による層の距離が近くなった場合、両者の間に電気的な容量結合が発生し、実装基板の電気特性が劣化することが懸念される。基板の設計を変更することができない場合、同軸コネクタ側において、基板に実装した場合にも電気特性の劣化を抑制できるような工夫を行うことが望ましい。   2. Description of the Related Art In recent years, multilayer boards on which coaxial connectors are mounted have been developed. A layer including a plurality of electrodes (a ground electrode and a signal electrode) is provided inside such a substrate. As the number of layers of the substrate increases, the distance between the layers formed by the plurality of electrodes and the distance between the terminals of the coaxial connector and the layers formed by the electrodes become shorter. In particular, when the distance between the terminal of the coaxial connector and the layer formed by the electrode becomes short, there is a concern that electrical capacitive coupling occurs between the two and that the electrical characteristics of the mounting board deteriorate. If the design of the board cannot be changed, it is desirable to take measures on the coaxial connector side so that the deterioration of the electrical characteristics can be suppressed even when the board is mounted on the board.

従って、本発明の目的は、前記問題を解決することにあって、電気特性の劣化を抑制することができる基板実装型同軸コネクタおよびその製造方法を提供することにある。   SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-described problems and to provide a board-mounted coaxial connector capable of suppressing deterioration of electrical characteristics and a method of manufacturing the same.

前記目的を達成するために、本発明の基板実装型同軸コネクタは、内部端子と、外部端子と、前記内部端子と前記外部端子の間に配置される絶縁性部材とを備え、前記内部端子および前記外部端子を介して基板に実装される基板実装型同軸コネクタであって、前記内部端子は、相手方コネクタの端子に挿入されるように突出する第１端子部と、前記第１端子部の基端部から前記第１端子部の突出方向に交差する方向に延びて、基板に実装される第２端子部とを有し、前記第１端子部は、前記基端部から筒状に延びる筒部を有し、前記基端部の外径は、前記基端部を除く前記筒部の外径以下に設定される。   In order to achieve the above object, a board-mounted coaxial connector of the present invention includes an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal. A board-mounted coaxial connector mounted on a board via the external terminal, wherein the internal terminal includes a first terminal protruding to be inserted into a terminal of a mating connector, and a base of the first terminal. A second terminal portion extending from the end portion in a direction intersecting the direction in which the first terminal portion protrudes, and a second terminal portion mounted on a substrate, wherein the first terminal portion extends cylindrically from the base end portion; And an outer diameter of the proximal end portion is set to be equal to or less than an outer diameter of the cylindrical portion excluding the proximal end portion.

また本発明の基板実装型同軸コネクタの製造方法は、内部端子と、外部端子と、前記内部端子と前記外部端子の間に配置される絶縁性部材とを備え、前記内部端子および前記外部端子を介して基板に実装される基板実装型同軸コネクタを製造する方法であって、前記内部端子を準備するステップと、前記外部端子を準備するステップと、前記内部端子と前記外部端子を互いに間隔を空けた状態で保持するステップと、前記内部端子と前記外部端子の間に前記絶縁性部材をインサート成形するステップとを含み、前記内部端子を準備するステップは、１枚の板状部材を準備するステップであって、第１の方向に板状に延びる第１端子部と、前記第１端子部の中央部の側方から分岐して前記第１の方向に直交する第２の方向に板状に延びる第２端子部とを有する前記１枚の板状部材を準備するステップと、前記第１端子部における前記第１の方向の中心部を基準として一方側の第１の部分と他方側の第２の部分とを互いの先端同士が対向して配置されるように湾曲させるステップと、前記第１端子部と前記第２端子部の接続部において、前記第１端子部あるいは前記第２端子部を折り曲げるステップと、を含む。   Further, the method of manufacturing a board-mounted coaxial connector of the present invention includes an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal, wherein the internal terminal and the external terminal are provided. A method of manufacturing a board-mounted coaxial connector mounted on a board through a method, comprising: preparing the internal terminal; preparing the external terminal; and spacing the internal terminal and the external terminal from each other. Holding the internal terminal and insert molding the insulating member between the internal terminal and the external terminal. The step of preparing the internal terminal includes the step of preparing one plate-shaped member. A first terminal portion extending in a plate shape in a first direction, and a first terminal portion branched from a side of a central portion of the first terminal portion and formed in a plate shape in a second direction orthogonal to the first direction. Extending second end Preparing the one plate-shaped member having a first portion and a first portion on one side and a second portion on the other side with respect to a center portion of the first terminal portion in the first direction. And bending the first terminal portion or the second terminal portion at a connecting portion between the first terminal portion and the second terminal portion. ,including.

本発明の基板実装型同軸コネクタおよびその製造方法によれば、電気特性の劣化を抑制することができる。   ADVANTAGE OF THE INVENTION According to the board-mounted type coaxial connector of this invention, and its manufacturing method, deterioration of an electrical characteristic can be suppressed.

実施の形態１の同軸コネクタを示す斜視図（絶縁性部材を実線で示した図）FIG. 2 is a perspective view showing the coaxial connector of the first embodiment (a diagram in which an insulating member is indicated by a solid line). 実施の形態１の同軸コネクタを示す斜視図（絶縁性部材を点線で示した図）FIG. 2 is a perspective view showing the coaxial connector of the first embodiment (a view in which an insulating member is indicated by a dotted line). 同軸コネクタを基板に実装した状態のイメージ図Image of coaxial connector mounted on board 内部端子の側面図Side view of internal terminal 内部端子の背面図Rear view of internal terminals 内部端子を形成する方法の一例を説明するための斜視図A perspective view for explaining an example of a method of forming an internal terminal. 内部端子を形成する方法の一例を説明するための斜視図A perspective view for explaining an example of a method of forming an internal terminal. 内部端子を形成する方法の一例を説明するための斜視図A perspective view for explaining an example of a method of forming an internal terminal. 変形例１による内部端子を示す斜視図Perspective view showing an internal terminal according to a first modification. 変形例１による内部端子を示す斜視図Perspective view showing an internal terminal according to a first modification. 変形例１による内部端子を示す斜視図Perspective view showing an internal terminal according to a first modification. 変形例２による内部端子を示す斜視図Perspective view showing an internal terminal according to Modification Example 2. 変形例３による内部端子を示す斜視図Perspective view showing an internal terminal according to Modification Example 3. 変形例３による内部端子を示す側面図Side view showing internal terminal according to Modification 3 実施の形態２の同軸コネクタに用いられる内部端子を示す斜視図Perspective view showing internal terminals used in the coaxial connector of the second embodiment. 図９に示す内部端子を形成する方法の一例を説明するための斜視図FIG. 9 is a perspective view for explaining an example of a method of forming the internal terminals shown in FIG. 図９に示す内部端子を形成する方法の一例を説明するための斜視図FIG. 9 is a perspective view for explaining an example of a method of forming the internal terminals shown in FIG. 図９に示す内部端子を形成する方法の一例を説明するための斜視図FIG. 9 is a perspective view for explaining an example of a method of forming the internal terminals shown in FIG. 図９に示す内部端子を形成する方法の一例を説明するための斜視図FIG. 9 is a perspective view for explaining an example of a method of forming the internal terminals shown in FIG.

本発明の第１態様によれば、内部端子と、外部端子と、前記内部端子と前記外部端子の間に配置される絶縁性部材とを備え、前記内部端子および前記外部端子を介して基板に実装される基板実装型同軸コネクタであって、前記内部端子は、相手方コネクタの端子に挿入されるように突出する第１端子部と、前記第１端子部の基端部から前記第１端子部の突出方向に交差する方向に延びて、基板に実装される第２端子部とを有し、前記第１端子部は、前記基端部から筒状に延びる筒部を有し、前記基端部の外径は、前記基端部を除く前記筒部の外径以下に設定される、基板実装型同軸コネクタを提供する。   According to the first aspect of the present invention, an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal are provided, and a substrate is provided via the internal terminal and the external terminal. A board-mounted coaxial connector to be mounted, wherein the internal terminal includes a first terminal protruding so as to be inserted into a terminal of a mating connector, and a first terminal protruding from a base end of the first terminal. A second terminal portion extending in a direction intersecting the projecting direction of the first terminal portion, the second terminal portion being mounted on a substrate, the first terminal portion having a tubular portion extending in a tubular shape from the proximal end portion, An outer diameter of the portion is set to be equal to or less than an outer diameter of the cylindrical portion excluding the base end portion.

このような構成によれば、第１端子部の基端部が広がらないように構成することで、基端部を径方向に広げて鍔部を設けた場合に比べて、第１端子部が基板と対向する対向面積が小さくなる。これにより、第１端子部と基板内層の電極との容量結合を抑制することができ、基板実装型同軸コネクタの電気特性の劣化を抑制することができる。   According to such a configuration, by configuring the base end portion of the first terminal portion so as not to spread, the first terminal portion can be compared with a case where the base end portion is expanded in the radial direction and the flange portion is provided. The facing area facing the substrate is reduced. Thereby, the capacitive coupling between the first terminal portion and the electrode in the inner layer of the substrate can be suppressed, and deterioration of the electrical characteristics of the board-mounted coaxial connector can be suppressed.

本発明の第２態様によれば、前記第１端子部の前記基端部の外径は、前記基端部を除く前記筒部の外径と同じ長さに設定される、第１態様に記載の基板実装型同軸コネクタを提供する。このような構成によれば、第１端子部の筒部をストレートな形状とすることで、第１端子部を簡単に形成することができる。   According to a second aspect of the present invention, the outer diameter of the base end of the first terminal portion is set to the same length as the outer diameter of the cylindrical portion excluding the base end. The present invention provides a board-mounted coaxial connector as described above. According to such a configuration, the first terminal portion can be easily formed by forming the cylindrical portion of the first terminal portion into a straight shape.

本発明の第３態様によれば、前記第１端子部は、前記第２端子部と一体的な１枚の板状の部材で形成されており、前記第１端子部の前記筒部は、周方向の一方側に延びる板状の第１の部分と、前記第１の部分から周方向の他方側に延びる板状の第２の部分とを備え、前記第１の部分と前記第２の部分の先端同士が対向するように配置されている、第１態様又は第２態様に記載の基板実装型同軸コネクタを提供する。このような構成によれば、第１端子部と第２端子部を１枚の板状の部材により形成することで、内部端子を簡単に形成することができる。また、第１端子部の筒部を第１の部分と第２の部分に分けて形成することで、板状の部材を曲げるだけで第１の部分と第２の部分を構成して筒部を形成でき、第１端子部を簡単に形成することができる。   According to the third aspect of the present invention, the first terminal portion is formed of a single plate-shaped member integrated with the second terminal portion, and the tubular portion of the first terminal portion is A first plate-shaped portion extending to one side in the circumferential direction; and a second plate-shaped portion extending from the first portion to the other side in the circumferential direction. The first portion and the second portion The board-mounted coaxial connector according to the first aspect or the second aspect, wherein the distal ends of the portions are arranged to face each other. According to such a configuration, the internal terminal can be easily formed by forming the first terminal portion and the second terminal portion with one plate-shaped member. Further, by forming the tubular portion of the first terminal portion separately into the first portion and the second portion, the first portion and the second portion are formed simply by bending the plate-like member. And the first terminal portion can be easily formed.

本発明の第４態様によれば、前記第１端子部の前記筒部は側面に貫通孔を有し、前記絶縁性部材は前記貫通孔を通るように配置されている、第１態様から第３態様のいずれか１つに記載の基板実装型同軸コネクタを提供する。このような構成によれば、貫通孔内に絶縁性部材を配置することで、第１端子部を強固に保持することができ、第１端子部の強度を補強することができる。   According to a fourth aspect of the present invention, the cylindrical portion of the first terminal portion has a through hole on a side surface, and the insulating member is disposed so as to pass through the through hole. A board-mounted coaxial connector according to any one of three aspects is provided. According to such a configuration, by disposing the insulating member in the through hole, the first terminal portion can be firmly held, and the strength of the first terminal portion can be reinforced.

本発明の第５態様によれば、内部端子と、外部端子と、前記内部端子と前記外部端子の間に配置される絶縁性部材とを備え、前記内部端子および前記外部端子を介して基板に実装される基板実装型同軸コネクタを製造する方法であって、前記内部端子を準備するステップと、前記外部端子を準備するステップと、前記内部端子と前記外部端子を互いに間隔を空けた状態で保持するステップと、前記内部端子と前記外部端子の間に前記絶縁性部材をインサート成形するステップとを含み、前記内部端子を準備するステップは、１枚の板状部材を準備するステップであって、第１の方向に板状に延びる第１端子部と、前記第１端子部の中央部の側方から分岐して前記第１の方向に直交する第２の方向に板状に延びる第２端子部とを有する前記１枚の板状部材を準備するステップと、前記第１端子部における前記第１の方向の中心部を基準として一方側の第１の部分と他方側の第２の部分とを互いの先端同士が対向して配置されるように湾曲させるステップと、前記第１端子部と前記第２端子部の接続部において、前記第１端子部あるいは前記第２端子部を折り曲げるステップと、を含む、基板実装型同軸コネクタの製造方法を提供する。   According to a fifth aspect of the present invention, an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal are provided, and a substrate is provided via the internal terminal and the external terminal. A method of manufacturing a board-mounted coaxial connector to be mounted, the method comprising: preparing an internal terminal; preparing an external terminal; and holding the internal terminal and the external terminal at an interval from each other. And the step of insert-molding the insulating member between the internal terminal and the external terminal, the step of preparing the internal terminal is a step of preparing one plate-shaped member, A first terminal portion extending in a plate shape in a first direction, and a second terminal branched from a side of a central portion of the first terminal portion and extending in a plate shape in a second direction orthogonal to the first direction. The one piece having a part A step of preparing a plate-like member; and a step in which the first end on one side and the second part on the other side are opposed to each other with reference to the center of the first terminal in the first direction. And a step of bending the first terminal portion or the second terminal portion at a connection portion between the first terminal portion and the second terminal portion, wherein the first terminal portion and the second terminal portion are bent. Provided is a method for manufacturing a connector.

このような方法によれば、第１端子部を基端部が広がらない形状とすることで、基端部が広がる形態に比べて、第１端子部が基板と対向する対向面積が小さくなる。これにより、第１端子部と基板内層の電極との電気的な容量結合を抑制することができ、基板実装型同軸コネクタの電気特性の劣化を抑制することができる。また、第１端子部と第２端子部を１枚の板状の部材により形成することで、内部端子を簡単に形成することができる。さらに、第１の部分と第２の部分を曲げるだけで第１端子部を形成できるため、第１端子部を簡単に形成することができる。   According to such a method, by forming the first terminal portion into a shape in which the base end portion does not spread, the facing area where the first terminal portion faces the substrate is smaller than in a form in which the base end portion is widened. Accordingly, it is possible to suppress the electrical capacitive coupling between the first terminal portion and the electrode in the substrate inner layer, and to suppress the deterioration of the electrical characteristics of the board-mounted coaxial connector. Further, by forming the first terminal portion and the second terminal portion with one plate-shaped member, the internal terminals can be easily formed. Further, since the first terminal portion can be formed only by bending the first portion and the second portion, the first terminal portion can be easily formed.

本発明の第６態様によれば、前記１枚の板状部材を準備するステップは、前記第１端子部に貫通孔が形成された前記板状部材を準備するステップを含み、前記絶縁性部材をインサート形成するステップは、前記第１端子部の前記貫通孔に前記絶縁性部材を配置するステップを含む、第５態様に記載の基板実装型同軸コネクタの製造方法を提供する。このような方法によれば、貫通孔に絶縁性部材を配置することで、第１端子部を絶縁性部材により強固に保持することができる。   According to a sixth aspect of the present invention, the step of preparing the one plate-like member includes the step of preparing the plate-like member having a through-hole formed in the first terminal portion, wherein the insulating member The method of manufacturing a board-mounted coaxial connector according to the fifth aspect, wherein the step of insert-forming includes the step of arranging the insulating member in the through hole of the first terminal portion. According to such a method, by disposing the insulating member in the through hole, the first terminal portion can be firmly held by the insulating member.

以下、本発明に係る基板実装型同軸コネクタおよびその製造方法の例示的な実施形態について、添付の図面を参照しながら説明する。本発明は、以下の実施形態の具体的な構成に限定されるものではなく、同様の技術的思想に基づく構成が本発明に含まれる。   Hereinafter, exemplary embodiments of a board-mounted coaxial connector and a method for manufacturing the same according to the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the specific configurations of the following embodiments, but includes configurations based on similar technical ideas.

（実施の形態１） (Embodiment 1)

図１、図２は、実施の形態１の基板実装型同軸コネクタ（以下、同軸コネクタと称する。）２を示す斜視図である。図１、図２に示す同軸コネクタ２は、主要な構成として、内部端子４と、外部端子６と、絶縁性部材８とを備える。図１では絶縁性部材８が実線で示されており、図２では絶縁性部材８が点線で示されている。   1 and 2 are perspective views showing a board-mounted coaxial connector (hereinafter, referred to as a coaxial connector) 2 according to the first embodiment. The coaxial connector 2 shown in FIGS. 1 and 2 includes an internal terminal 4, an external terminal 6, and an insulating member 8 as main components. In FIG. 1, the insulating member 8 is indicated by a solid line, and in FIG. 2, the insulating member 8 is indicated by a dotted line.

同軸コネクタ２は、内部端子４と外部端子６の裏面側が基板（図示せず）に実装されて、内部端子４と外部端子６の表面側が相手方コネクタ（図示せず）に接続される。同軸コネクタ２を相手方コネクタに接続する際には、内部端子４および外部端子６を対応する相手方コネクタの各端子に嵌合させる。   In the coaxial connector 2, the back surfaces of the internal terminals 4 and the external terminals 6 are mounted on a board (not shown), and the front surfaces of the internal terminals 4 and the external terminals 6 are connected to a mating connector (not shown). When the coaxial connector 2 is connected to the mating connector, the internal terminals 4 and the external terminals 6 are fitted to corresponding terminals of the mating connector.

図１、図２に示すように、内部端子４は、中心導体１０と、実装部１２とを備える。中心導体１０は、内部端子４を相手方コネクタに電気的に接続するための端子（第１端子部）であり、実装部１２は、内部端子４を基板に実装して電気的に接続するための端子（第２端子部）である。   As shown in FIGS. 1 and 2, the internal terminal 4 includes a center conductor 10 and a mounting part 12. The center conductor 10 is a terminal (first terminal portion) for electrically connecting the internal terminal 4 to a mating connector, and the mounting portion 12 is for mounting the internal terminal 4 on a substrate and electrically connecting the internal terminal 4 to a board. Terminal (second terminal part).

中心導体１０は、相手方コネクタの端子に挿入されるようにＡ方向（挿入方向）に突出した部材である。中心導体１０は、Ａ方向に筒状に延びる筒状の形状（本実施の形態１では円筒状）を有する。中心導体１０の中心部にはＡ方向に貫通する貫通孔１４が形成されている。   The center conductor 10 is a member protruding in the direction A (insertion direction) so as to be inserted into the terminal of the mating connector. The center conductor 10 has a cylindrical shape (cylindrical in the first embodiment) extending in a cylindrical shape in the direction A. A through-hole 14 penetrating in the direction A is formed at the center of the center conductor 10.

図１、図２に示すように、中心導体１０は、相手方コネクタにおけるソケット形状の端子（図示せず）に挿入可能なピン形状を有する。ピン形状は外周部に接触表面を有し、ソケット形状は内周部に接触表面を有する。   As shown in FIGS. 1 and 2, the center conductor 10 has a pin shape that can be inserted into a socket-shaped terminal (not shown) of the mating connector. The pin shape has a contact surface on the outer periphery and the socket shape has a contact surface on the inner periphery.

実装部１２は、中心導体１０の基端部１０ａ（図２）からＢ方向に延びる板状の部材である。本実施の形態１におけるＢ方向はＡ方向に直交する。実装部１２は基板に半田付けされて実装される。   The mounting portion 12 is a plate-shaped member extending in the B direction from the base end portion 10a (FIG. 2) of the center conductor 10. The B direction in the first embodiment is orthogonal to the A direction. The mounting section 12 is mounted on the board by soldering.

外部端子６は、外部導体１６と、実装部１８とを備える。外部導体１６は、外部端子６を相手方コネクタに電気的に接続するための端子（第３端子部）であり、実装部１８は、外部端子６を基板に実装して電気的に接続するための端子（第４端子部）である。外部導体１６の内側には内部端子４の中心導体１０が配置されている。   The external terminal 6 includes an external conductor 16 and a mounting part 18. The external conductor 16 is a terminal (third terminal portion) for electrically connecting the external terminal 6 to a mating connector, and the mounting portion 18 is for mounting the external terminal 6 on a substrate and electrically connecting the external terminal 6 to a mating connector. Terminal (fourth terminal unit). The center conductor 10 of the internal terminal 4 is arranged inside the outer conductor 16.

外部導体１６は、相手方コネクタの端子に嵌合するように、前述した中心導体１０と同様にＡ方向に延びる筒状（本実施の形態１では円筒状）の部材として構成されている。外部導体１６の外周面には相手型コネクタの端子を嵌合させる溝１６ａが形成されている。   The outer conductor 16 is configured as a tubular (cylindrical in the first embodiment) member extending in the A direction similarly to the above-described center conductor 10 so as to be fitted to the terminal of the mating connector. A groove 16a for fitting a terminal of a mating connector is formed on the outer peripheral surface of the external conductor 16.

実装部１８は、外部導体１６の基端部１６ｂ（図２）から横方向に延びる板状の部材である。実装部１８は基板に半田付けされて実装される。実施の形態１では実装部１８は３箇所設けられている。   The mounting portion 18 is a plate-shaped member extending laterally from the base end portion 16b (FIG. 2) of the external conductor 16. The mounting section 18 is mounted on the board by soldering. In the first embodiment, three mounting portions 18 are provided.

絶縁性部材８は、内部端子４と外部端子６を電気的に絶縁するように、内部端子４と外部端子６の間に配置される絶縁性の部材である。絶縁性部材８は例えば樹脂により構成される。   The insulating member 8 is an insulating member disposed between the internal terminal 4 and the external terminal 6 so as to electrically insulate the internal terminal 4 from the external terminal 6. The insulating member 8 is made of, for example, a resin.

上述した構成の同軸コネクタ２を製造する方法の例としては、まず、内部端子４と外部端子６をそれぞれ準備する。具体的には、図１、図２に示した形状の内部端子４と外部端子６をそれぞれ準備する。内部端子４と外部端子６は１枚の金属板を加工して作製することができ、例えば、銅合金素材の表面にニッケルと金のめっきを施して形成される。内部端子４の詳細な作製方法については後述する。   As an example of a method of manufacturing the coaxial connector 2 having the above-described configuration, first, the internal terminals 4 and the external terminals 6 are prepared. Specifically, the internal terminals 4 and the external terminals 6 having the shapes shown in FIGS. 1 and 2 are prepared. The internal terminals 4 and the external terminals 6 can be manufactured by processing a single metal plate, and are formed by, for example, plating nickel and gold on the surface of a copper alloy material. A detailed method for manufacturing the internal terminal 4 will be described later.

その後、金型等を用いて内部端子４と外部端子６を、互いに間隔を空けた状態で保持する。その状態で内部端子４と外部端子６の間に、絶縁性部材８の原料である樹脂をインサート成形し、絶縁性部材８を形成する。これにより、図１、図２に示す同軸コネクタ２を製造することができる。   Thereafter, the internal terminals 4 and the external terminals 6 are held in a state of being spaced apart from each other using a mold or the like. In this state, a resin as a raw material of the insulating member 8 is insert-molded between the internal terminal 4 and the external terminal 6 to form the insulating member 8. Thereby, the coaxial connector 2 shown in FIGS. 1 and 2 can be manufactured.

上述した構成の同軸コネクタ２を基板に実装した状態のイメージ図を図３に示す。   FIG. 3 shows an image diagram of a state in which the coaxial connector 2 having the above-described configuration is mounted on a board.

図３は、同軸コネクタ２における内部端子４の中心導体１０と、基板２０の表面側グランド電極２２および裏面側グランド電極２４を模式的に示している。図３に示す状態において、同軸コネクタ２に高周波信号を流した場合、中心導体１０と表面側グランド電極２２の間（矢印Ｃ）と、中心導体１０と裏面側グランド電極２４の間（矢印Ｄ）において電気的な容量結合が生じる。この中でも特に、矢印Ｄで示す中心導体１０と裏面側グランド電極２４の間で発生する容量が大きくなると、電気特性の劣化が生じてしまうことが多い。   FIG. 3 schematically shows the center conductor 10 of the internal terminal 4 in the coaxial connector 2, and the front-side ground electrode 22 and the rear-side ground electrode 24 of the substrate 20. In the state shown in FIG. 3, when a high-frequency signal flows through the coaxial connector 2, between the center conductor 10 and the front-side ground electrode 22 (arrow C) and between the center conductor 10 and the back-side ground electrode 24 (arrow D). , Electrical capacitive coupling occurs. Among them, particularly, when the capacitance generated between the center conductor 10 indicated by the arrow D and the back-side ground electrode 24 increases, the electrical characteristics often deteriorate.

このような電気特性の劣化を抑制するために、本実施の形態１の同軸コネクタ２では、内部端子４の中心導体１０の形状を工夫している。具体的には、図４Ａ、図４Ｂを用いて説明する。   In order to suppress such deterioration of the electric characteristics, in the coaxial connector 2 of the first embodiment, the shape of the center conductor 10 of the internal terminal 4 is devised. Specifically, description will be given with reference to FIGS. 4A and 4B.

図４Ａは、内部端子４の側面図であり、図４Ｂは、内部端子４の背面図である。図４Ａ、図４Ｂに示すように、本実施の形態１における中心導体１０は、略筒状の形状を有しており、実装部１２が接続される基端部１０ａと、基端部１０ａから挿入方向Ａへ筒状（本実施の形態１では円筒状）に延びる筒部１０ｂとを有する。筒部１０ｂは、中心導体１０の先端部１０ｃを構成する。   FIG. 4A is a side view of the internal terminal 4, and FIG. 4B is a rear view of the internal terminal 4. As shown in FIGS. 4A and 4B, the center conductor 10 in the first embodiment has a substantially cylindrical shape, and includes a base end 10a to which the mounting portion 12 is connected, and a base end 10a. A cylindrical portion 10b extending in the insertion direction A in a cylindrical shape (in the first embodiment, a cylindrical shape). The cylindrical portion 10b constitutes a tip 10c of the center conductor 10.

本実施の形態１では特に、基端部１０ａから筒部１０ｂにかけて外周部が直線的に構成されており、基端部１０ａの外径（直径）Ｄ１と筒部１０ｂの外径Ｄ２は同じ長さに設定されている。このように、中心導体１０の基端部１０ａには径方向に広がった鍔部が形成されていない。また本実施の形態１では、実装部１２の幅も基端部１０ａの幅（外径Ｄ１）と同じ長さに設定されている。   In the first embodiment, in particular, the outer peripheral portion is linearly formed from the base end portion 10a to the cylindrical portion 10b, and the outer diameter (diameter) D1 of the base end portion 10a and the outer diameter D2 of the cylindrical portion 10b are the same. Is set to In this way, the base end portion 10a of the center conductor 10 is not formed with a flange portion that expands in the radial direction. In the first embodiment, the width of the mounting portion 12 is also set to the same length as the width (outer diameter D1) of the base end portion 10a.

上述した実施の形態１の構成に対して、特許文献１の同軸コネクタのように、中心導体の基端部に径の広がった鍔部が形成される形態が考えられる。この形態では、同軸コネクタにおいて基板に最も近い位置に面積の広くなった鍔部が形成されている。このため、中心導体が基板２０に対向する対向面積が大きくなり、中心導体と裏面側グランド電極２４の間で発生する容量が大きくなり、同軸コネクタの電気特性が劣化することが懸念される。   In contrast to the configuration of the first embodiment described above, a form in which a flange having an enlarged diameter is formed at the base end of the center conductor, as in the coaxial connector of Patent Document 1, may be considered. In this embodiment, a flange having an increased area is formed at a position closest to the substrate in the coaxial connector. For this reason, the area where the center conductor faces the substrate 20 increases, and the capacitance generated between the center conductor and the back-side ground electrode 24 increases, which may cause a deterioration in the electrical characteristics of the coaxial connector.

実施の形態１の同軸コネクタ２では、前述したように中心導体１０の基端部１０ａに鍔部は形成されておらず、挿入方向であるＡ方向に外周部が直線状となっている。このような構成によれば、中心導体１０が基板２０に対向する対向面積を小さくすることができるため、中心導体１０と裏面側グランド電極２４の間で発生する容量を小さくすることができ、同軸コネクタ２の電気特性の劣化を抑制することができる。   In the coaxial connector 2 of the first embodiment, the flange is not formed at the base end 10a of the center conductor 10 as described above, and the outer peripheral portion is linear in the direction A as the insertion direction. According to such a configuration, the facing area where the center conductor 10 faces the substrate 20 can be reduced, so that the capacitance generated between the center conductor 10 and the back-side ground electrode 24 can be reduced, and The deterioration of the electrical characteristics of the connector 2 can be suppressed.

上述した構成の内部端子４を形成する方法の一例について、図５Ａ−図５Ｃを用いて説明する。   An example of a method for forming the internal terminal 4 having the above-described configuration will be described with reference to FIGS. 5A to 5C.

まず、１枚の板状部材２６を準備する（ステップＳ１）。具体的には、図５Ａに示すように、第１端子部２８と第２端子部３０を一体的に有した導電性の板状部材２６を準備する。   First, one plate-like member 26 is prepared (Step S1). Specifically, as shown in FIG. 5A, a conductive plate-shaped member 26 integrally having a first terminal portion 28 and a second terminal portion 30 is prepared.

図５Ａに示すように、第１端子部２８は、第１の方向Ｅに延びる板状の部分である。第２端子部３０は、第１の方向Ｅに直交する第２の方向Ｆに延びる板状の部分である。第１端子部２８と第２端子部３０は、同一平面に沿って延びるように一体的に形成されている。図５Ａに示すように、第１端子部２８と第２端子部３０は接続ライン３１で互いに接続されている。また第２端子部３０は、第１端子部２８におけるＥ方向の中央部から側方に分岐している。   As shown in FIG. 5A, the first terminal portion 28 is a plate-like portion extending in the first direction E. The second terminal portion 30 is a plate-like portion extending in a second direction F orthogonal to the first direction E. The first terminal portion 28 and the second terminal portion 30 are integrally formed so as to extend along the same plane. As shown in FIG. 5A, the first terminal portion 28 and the second terminal portion 30 are connected to each other by a connection line 31. In addition, the second terminal portion 30 is branched laterally from a central portion of the first terminal portion 28 in the E direction.

次に、第１端子部２８を湾曲させる（ステップＳ２）。具体的には、図５Ａに示すように、第１端子部２８における第１の方向Ｅの中心位置である中心ライン２９を基準として、一方側にある第１の部分２８ａと他方側にある第２の部分２８ｂをそれぞれ湾曲させる。   Next, the first terminal portion 28 is bent (step S2). Specifically, as shown in FIG. 5A, the first portion 28a on one side and the first portion 28a on the other side are based on a center line 29 which is a center position of the first terminal portion 28 in the first direction E. Each of the second portions 28b is curved.

図５Ｂに示すように、第１の部分２８ａは周方向Ｒ１に沿って湾曲され、第２の部分２８ｂは周方向Ｒ１とは逆向きの周方向Ｒ２に沿って湾曲されている。また、第１の部分２８ａの先端２８ｃと第２の部分２８ｂの先端２８ｄは互いに対向して配置されている。先端２８ｃと先端２８ｄは接触しても非接触であってもよい。   As shown in FIG. 5B, the first portion 28a is curved along the circumferential direction R1, and the second portion 28b is curved along the circumferential direction R2 opposite to the circumferential direction R1. The tip 28c of the first portion 28a and the tip 28d of the second portion 28b are arranged to face each other. The tip 28c and the tip 28d may be in contact or non-contact.

このように湾曲された第１端子部２８は、外周部に凹凸がなく軸方向に沿って直線状に延びた筒状に形成される。   The first terminal portion 28 curved in this manner is formed in a cylindrical shape extending linearly along the axial direction without any irregularities on the outer peripheral portion.

次に、第１端子部２８を折り曲げる（ステップＳ３）。具体的には、図５Ｂに示す第１端子部２８と第２端子部３０の接続部である接続ライン３１を基準として、第１端子部２８を約９０度折り曲げる。   Next, the first terminal portion 28 is bent (Step S3). Specifically, the first terminal portion 28 is bent by about 90 degrees with reference to the connection line 31 which is a connection portion between the first terminal portion 28 and the second terminal portion 30 shown in FIG. 5B.

第１端子部２８を折り曲げると、図５Ｃに示すような形状となる。図５Ｃに示す板状部材２６は、第１端子部２８が中心導体１０を構成し、第２端子部３０が実装部１２を構成する内部端子４となる。   When the first terminal portion 28 is bent, the shape becomes as shown in FIG. 5C. In the plate-like member 26 shown in FIG. 5C, the first terminal portions 28 constitute the central conductor 10, and the second terminal portions 30 become the internal terminals 4 constituting the mounting portion 12.

このような内部端子４の形成方法によれば、中心導体１０を基端部に鍔部のない外周部が直線状に形成された筒状に形成することができる。よって、中心導体の基端部に鍔部を有する形態に比べて、基板２０の裏面側グランド電極２４との対向面積を小さくすることができ、裏面側グランド電極２４の間で発生する容量を抑制し、同軸コネクタ２の電気特性の劣化を抑制することができる。   According to such a method of forming the internal terminal 4, the center conductor 10 can be formed in a tubular shape in which the outer peripheral portion without the flange at the base end portion is linearly formed. Therefore, the area of the substrate 20 facing the back-side ground electrode 24 can be reduced as compared with a form having a flange at the base end of the center conductor, and the capacitance generated between the back-side ground electrodes 24 can be suppressed. However, deterioration of the electrical characteristics of the coaxial connector 2 can be suppressed.

このように同軸コネクタ２の電気特性の劣化を抑制することができるため、基板２０内層の電極層の数を減らさずに多数の電極層を設けた場合であっても、内部端子４の中心導体１０と基板２０の電極との容量結合を小さくして所望の電気特性が得ることができる。これにより、基板２０の設計上の制約を減らすことができる。   As described above, since the deterioration of the electric characteristics of the coaxial connector 2 can be suppressed, even if a large number of electrode layers are provided without reducing the number of electrode layers in the inner layer of the substrate 20, the center conductor of the internal terminal 4 is provided. The desired electrical characteristics can be obtained by reducing the capacitive coupling between the electrode 10 and the electrode of the substrate 20. As a result, restrictions on the design of the substrate 20 can be reduced.

また上記方法によれば、中心導体１０および実装部１２を１枚の板状部材２６から形成することができるため、簡単な方法で内部端子４を形成することができる。さらには、第１端子部２８の第１の部分２８ａと第２の部分２８ｂを湾曲させるだけで、中心導体１０を形成することができるため、簡単な方法で第１端子部２８を形成することができる。   Further, according to the above method, since the center conductor 10 and the mounting portion 12 can be formed from one plate-like member 26, the internal terminals 4 can be formed by a simple method. Furthermore, since the center conductor 10 can be formed only by bending the first portion 28a and the second portion 28b of the first terminal portion 28, the first terminal portion 28 can be formed by a simple method. Can be.

以上、実施の形態１の同軸コネクタ２に用いる内部端子４の形状について詳細に説明したが、様々な変形例が可能である。具体的な変形例について、図６Ａ−図１０Ｄを用いて説明する。なお、以下の変形例では、実施の形態１と異なる点について主に説明し、重複する内容については説明を省略する。また、同一又は同等の構成については同じ符号を付して説明する。   The shape of the internal terminal 4 used in the coaxial connector 2 according to the first embodiment has been described in detail, but various modifications are possible. A specific modified example will be described with reference to FIGS. 6A to 10D. In the following modified examples, points different from the first embodiment will be mainly described, and description of overlapping contents will be omitted. In addition, the same or equivalent components will be described with the same reference numerals.

（変形例１）
図６Ａ−図６Ｃに、変形例１による内部端子４０を示す。図６Ａ−図６Ｃに示す内部端子４０は、中心導体４２と、実装部４３とを備える。(Modification 1)
6A to 6C show an internal terminal 40 according to the first modification. The internal terminal 40 shown in FIGS. 6A to 6C includes a center conductor 42 and a mounting part 43.

実施の形態１の内部端子４と同様に、中心導体４２の基端部４２ａは径方向に広がった鍔部を有しておらず、筒部４２ｂの外径と同じ外径に設定されている。これにより、中心導体４２が基板２０に対向する対向面積を小さくすることができるため、実施の形態１の同軸コネクタ２と同様に、内部端子４０を使用した同軸コネクタにおける電気特性の劣化を抑制することができる。   Similarly to the internal terminal 4 of the first embodiment, the base end portion 42a of the central conductor 42 does not have a radially expanded flange portion, and is set to the same outer diameter as the outer diameter of the cylindrical portion 42b. . Accordingly, the area of the center conductor 42 facing the substrate 20 can be reduced, and thus, similarly to the coaxial connector 2 of the first embodiment, the deterioration of the electrical characteristics of the coaxial connector using the internal terminals 40 is suppressed. be able to.

変形例１の中心導体４２において、基端部４２ａに対向する位置にある先端部４２ｃは、筒部４２ｂから径方向に窄まったテーパ形状となっている。すなわち、先端部４２ｃの外径は筒部４２ｂの外径よりも小さく、先端側に向かって漸減するように構成されている。このように先端部４２ｃを先端側が窄まったテーパ状とすることにより、相手方コネクタの端子に挿入する際に容易に挿入することができる。   In the center conductor 42 of the first modification, the distal end portion 42c at a position facing the base end portion 42a has a tapered shape narrowed in the radial direction from the cylindrical portion 42b. That is, the outer diameter of the distal end portion 42c is smaller than the outer diameter of the cylindrical portion 42b, and is configured to gradually decrease toward the distal end side. By thus forming the distal end portion 42c into a tapered shape in which the distal end side is narrowed, the distal end portion 42c can be easily inserted into the terminal of the mating connector.

変形例１の中心導体４２にはさらに、基端部４２ａに切欠き４４が設けられている。切欠き４４には前述した絶縁性部材８（図１）が配置される。切欠き４４に絶縁性部材８を配置することにより、中心導体４２を絶縁性部材８によって強固に固定することができる。このように切り欠き４４を設けることで、中心導体４２の基端部４２ａに鍔部を設けずに絶縁性部材８による抜け止め作用がなくなった場合でも、中心導体４２の強度を補強することができる。   The central conductor 42 of the first modification is further provided with a notch 44 at the base end 42a. The above-mentioned insulating member 8 (FIG. 1) is arranged in the notch 44. By disposing the insulating member 8 in the notch 44, the center conductor 42 can be firmly fixed by the insulating member 8. By providing the notch 44 in this way, even if the insulating member 8 does not have a retaining function without providing a flange at the base end 42a of the central conductor 42, the strength of the central conductor 42 can be reinforced. it can.

図６Ａ−６Ｃに示すような内部端子４０を形成するには、図５Ａに示した板状部材２６において切欠き４４が予め形成されたものを用いて、図５Ａ−５Ｃに示した方法と同様の方法を実施すればよい。   In order to form the internal terminals 40 as shown in FIGS. 6A to 6C, the notch 44 is formed in advance in the plate-like member 26 shown in FIG. 5A, and the same method as that shown in FIGS. 5A to 5C is used. The above method may be performed.

（変形例２）
次に、変形例２による内部端子５０を図７に示す。図７に示す内部端子５０は、中心導体５２と、実装部４３とを備える。中心導体５２は、基端部５２ａと、筒部４２ｂと、先端部４２ｃとを備える。(Modification 2)
Next, FIG. 7 shows an internal terminal 50 according to a second modification. The internal terminal 50 shown in FIG. 7 includes a center conductor 52 and a mounting part 43. The center conductor 52 includes a base end 52a, a tube 42b, and a tip 42c.

図７に示す内部端子５０は、中心導体５２の基端部５２ａにおいて、切欠き４４に加えてさらなる切欠き５５が形成されている点が、変形例１の内部端子４０と異なる。   The internal terminal 50 shown in FIG. 7 differs from the internal terminal 40 of the first modification in that a notch 55 is formed in addition to the notch 44 at the base end 52a of the center conductor 52.

このような切欠き５５を設けると共に、切欠き５５に絶縁性部材８を配置する。これにより、中心導体５２を絶縁性部材８によってより強固に固定し、中心導体５２の強度を補強することができる。   The notch 55 is provided, and the insulating member 8 is arranged in the notch 55. Thereby, the center conductor 52 can be more firmly fixed by the insulating member 8 and the strength of the center conductor 52 can be reinforced.

図７に示すような内部端子５０を形成するには、図５Ａに示した板状部材２６において切欠き４４と切欠き５５が予め形成されたものを用いて、図５Ａ−５Ｃに示した方法と同様の方法を実施すればよい。   In order to form the internal terminal 50 as shown in FIG. 7, the notch 44 and the notch 55 are formed in advance in the plate-like member 26 shown in FIG. 5A, and the method shown in FIGS. 5A-5C is used. What is necessary is just to implement the method similar to.

（変形例３）
次に、変形例３による内部端子６０を図８Ａ、８Ｂに示す。図８Ａ、８Ｂに示す内部端子６０は、中心導体６２と、実装部４３とを備える。中心導体６２は、基端部６２ａと、筒部６２ｂと、先端部４２ｃとを備える。(Modification 3)
Next, FIGS. 8A and 8B show an internal terminal 60 according to the third modification. The internal terminals 60 shown in FIGS. 8A and 8B include a center conductor 62 and a mounting portion 43. The center conductor 62 includes a base end portion 62a, a cylindrical portion 62b, and a front end portion 42c.

図８Ａ、８Ｂに示す内部端子６０は、中心導体６２の筒部６２ｂの側面に貫通孔６４を形成している点が、変形例１の内部端子４０と異なる。   The internal terminal 60 shown in FIGS. 8A and 8B differs from the internal terminal 40 of the first modification in that a through hole 64 is formed on the side surface of the cylindrical portion 62b of the center conductor 62.

貫通孔６４には絶縁性部材８（図示せず）が配置される。絶縁性部材８は、貫通孔６４を通じて中心導体６２の外周部と内周部を囲むように配置され、図１に示すような同軸コネクタ２の完成状態において貫通孔６４を露出させないように配置される。   The insulating member 8 (not shown) is disposed in the through hole 64. The insulating member 8 is disposed so as to surround the outer peripheral portion and the inner peripheral portion of the central conductor 62 through the through hole 64, and is disposed so as not to expose the through hole 64 in a completed state of the coaxial connector 2 as shown in FIG. You.

このように貫通孔６４に絶縁性部材８を配置することで、クサビの構造をとることができ、中心導体６２をより強固に固定することができる。また、絶縁性部材８によって中心導体６２の抜けや回転を抑制することにより、同軸コネクタ２の電気特性の劣化を抑制することができる。さらに、絶縁性部材８によって中心導体６２と実装部４３の方向性が一意的に決まり、動くことがないため、同軸コネクタ２を基板２０へ実装した時に中心導体６２の回転による電気的・機械的な性能の不具合が発生しないようにすることができる。   By arranging the insulating member 8 in the through hole 64 in this manner, a wedge structure can be obtained, and the center conductor 62 can be more firmly fixed. Further, by suppressing the detachment and rotation of the center conductor 62 by the insulating member 8, deterioration of the electric characteristics of the coaxial connector 2 can be suppressed. Further, since the directionality of the center conductor 62 and the mounting portion 43 is uniquely determined by the insulating member 8 and does not move, the electric / mechanical due to the rotation of the center conductor 62 when the coaxial connector 2 is mounted on the substrate 20. It is possible to prevent the occurrence of a malfunction of the performance.

図８Ａ、８Ｂに示すような内部端子６０を形成するには、図５Ａに示した板状部材２６において切欠き４４と貫通孔６４が予め形成されたものを用いて、図５Ａ−５Ｃに示した方法と同様の方法を実施すればよい。   In order to form the internal terminal 60 as shown in FIGS. 8A and 8B, the notch 44 and the through hole 64 in the plate-like member 26 shown in FIG. What is necessary is just to implement the same method as the method mentioned above.

（実施の形態２）
本発明に係る実施の形態２の同軸コネクタで用いられる内部端子について説明する。なお、実施の形態２では、主に実施の形態１と異なる点について説明する。実施の形態２においては、実施の形態１と同一又は同等の構成については同じ符号を付して説明する。また、実施の形態２では、実施の形態１と重複する記載は省略する。(Embodiment 2)
An internal terminal used in the coaxial connector according to the second embodiment of the present invention will be described. In the second embodiment, differences from the first embodiment will be mainly described. In the second embodiment, the same or equivalent components as those in the first embodiment are denoted by the same reference numerals and described. In the second embodiment, descriptions overlapping with the first embodiment are omitted.

実施の形態１では、内部端子４を曲げ加工により形成していたのに対して、実施の形態２では絞り加工により内部端子を形成する点が、実施の形態１と異なる。   In the first embodiment, the internal terminals 4 are formed by bending, whereas in the second embodiment, the internal terminals are formed by drawing, which is different from the first embodiment.

実施の形態２における内部端子７０を図９に示す。図９に示す内部端子７０は、中心導体７２と、実装部７４とを備える。   FIG. 9 shows an internal terminal 70 according to the second embodiment. The internal terminal 70 shown in FIG. 9 includes a center conductor 72 and a mounting part 74.

中心導体７２は、大略筒状に形成されるとともに、基端部７２ａと、筒部７２ｂと、先端部７２ｃとを備える。   The center conductor 72 is formed in a substantially cylindrical shape, and includes a base end 72a, a tube 72b, and a tip 72c.

実施の形態１では、中心導体１０の中心を貫通するように貫通孔１４が形成されていたのに対し、実施の形態２では貫通孔が形成されておらず閉じられており、先端部７２ｃはドーム状に形成されている。また筒部７２ｂの側面には、矩形状に開口した貫通孔７６が形成されている。   In the first embodiment, the through-hole 14 is formed so as to penetrate the center of the center conductor 10. On the other hand, in the second embodiment, the through-hole is not formed and the through-hole 14 is closed. It is formed in a dome shape. Further, a rectangular through-hole 76 is formed on the side surface of the cylindrical portion 72b.

図９に示す内部端子７０は、図１０Ａに示すような一枚の板状部材８０を絞り加工することによって形成することができる。   The internal terminal 70 shown in FIG. 9 can be formed by drawing a single plate-like member 80 as shown in FIG. 10A.

具体的には、図１０Ａに示す板状部材８０は、第１の板部８２と、第２の板部８４とを備える。第１の板部８２は、幅Ｄ３が一定である。第１の板部８２から続く第２の板部８４は、幅Ｄ３から幅Ｄ４まで漸増するように形成される基端部８４ａと、基端部８４ａから幅Ｄ４で一定に延びる中央部８４ｂと、中央部８４ｂから先端に向かって滑らかに窄まる先端部８４ｃとを有する。   Specifically, the plate member 80 shown in FIG. 10A includes a first plate portion 82 and a second plate portion 84. The first plate portion 82 has a constant width D3. A second plate portion 84 continuing from the first plate portion 82 includes a base end portion 84a formed so as to gradually increase from the width D3 to the width D4, and a central portion 84b that extends from the base end portion 84a at a constant width D4. , A distal end portion 84c that smoothly narrows from the central portion 84b toward the distal end.

内部端子７０を形成するためには、第１の板部８２よりも幅が大きくされた第２の板部８４に対して、パンチ等を用いて絞り加工を行う。これにより、図１０Ｂに示す中間体８６が形成される。   In order to form the internal terminals 70, a second plate portion 84 having a width larger than that of the first plate portion 82 is subjected to drawing using a punch or the like. Thereby, the intermediate body 86 shown in FIG. 10B is formed.

中間体８６では、第２の板部８４において幅方向に直交するＡ方向に突出した筒状の筒部８８が形成される。筒部８８は絞り加工によって形成されるため、中心部を貫通するような貫通孔は形成されない。   In the intermediate body 86, a cylindrical tubular portion 88 protruding in the direction A orthogonal to the width direction is formed in the second plate portion 84. Since the cylindrical portion 88 is formed by drawing, a through hole penetrating the center portion is not formed.

図１０Ｂに示す第２の板部８４では、筒部８８の外径よりも径が広がった鍔部８９が基端部に形成されている。筒部８８を絞り加工で形成するためには、鍔部８９のように径の広がった拡径部が必要となる。   In the second plate portion 84 shown in FIG. 10B, a flange portion 89 having a diameter larger than the outer diameter of the cylindrical portion 88 is formed at the base end. In order to form the tubular portion 88 by drawing, an enlarged diameter portion such as a flange portion 89 is required.

次に、図１０Ｂに示す中間体８６の筒部８８の側面に切り抜き加工を行う。これにより、図１０Ｃに示すように貫通孔９０を形成する。   Next, the side surface of the cylindrical portion 88 of the intermediate body 86 shown in FIG. 10B is cut out. Thereby, a through hole 90 is formed as shown in FIG. 10C.

次に、図１０Ｃに示す中間体８６において、鍔部８９を切断する。これにより、図１０Ｄに示すような内部端子７０（図９）を形成することができる。図１０Ｄに示す内部端子７０においては、筒部８８が中心導体７２に相当し、第１の板部８２が実装部７４に相当する。   Next, in the intermediate body 86 shown in FIG. 10C, the flange 89 is cut. Thereby, the internal terminal 70 (FIG. 9) as shown in FIG. 10D can be formed. In the internal terminal 70 shown in FIG. 10D, the cylindrical portion 88 corresponds to the central conductor 72, and the first plate portion 82 corresponds to the mounting portion 74.

図９、図１０Ｄに示す内部端子７０においても、中心導体７２の基端部７２ａは径方向に広がった鍔部を有さず、筒部７２ｂと同じ外径に設定されている。このような構成によれば、実施の形態１の内部端子４と同様に、内部端子７０を用いた同軸コネクタの電気特性の劣化を抑制することができる。   Also in the internal terminal 70 shown in FIGS. 9 and 10D, the base end portion 72a of the center conductor 72 does not have a flange portion extending in the radial direction, and is set to have the same outer diameter as the cylindrical portion 72b. According to such a configuration, similarly to the internal terminal 4 of the first embodiment, it is possible to suppress the deterioration of the electrical characteristics of the coaxial connector using the internal terminal 70.

なお、上述した方法により実施の形態２の内部端子７０を形成する場合には、貫通孔９０を形成する切り抜き工程や、鍔部８９を切断する切断工程において、中間体８６における他の部分の形状が崩れる等、困難性を伴う場合がある。このような絞り加工による内部端子７０の形成方法に対して、実施の形態１のような曲げ加工による内部端子４の形成方法によれば、切り抜きや切断といった工程が不要である。よって、内部端子４を精度良くかつ簡単に形成することができる。   In the case where the internal terminal 70 of the second embodiment is formed by the above-described method, the shape of another portion of the intermediate body 86 in the cutting step of forming the through hole 90 and the cutting step of cutting the flange 89 is described. It may be difficult, for example, to collapse. In contrast to the method of forming the internal terminals 70 by drawing, the method of forming the internal terminals 4 by bending as in Embodiment 1 does not require a step of cutting or cutting. Therefore, the internal terminals 4 can be formed accurately and easily.

以上、上述の実施の形態１、２および変形例を挙げて本発明を説明したが、本発明は上述の実施の形態１、２および変形例に限定されない。例えば、実施の形態１では、中心導体１０の基端部１０ａの外径が、基端部１０ａを除く筒部１０ｂの外径と同じ長さである場合について説明したが、このような場合に限らず、筒部１０ｂの外径よりも短い長さであってもよい。このような場合であっても、中心導体１０が基板２０に対向する対向面積を小さくすることができるため、同軸コネクタ２の電気特性の劣化を抑制することができる。このように、基端部１０ａの外径を、基端部１０ａを除く筒部１０ｂの外径以下に設定すれば、同軸コネクタ２の電気特性の劣化を抑制することができる。   As described above, the present invention has been described with reference to the first and second embodiments and the modifications, but the present invention is not limited to the first and second embodiments and the modifications. For example, in the first embodiment, the case where the outer diameter of the base end 10a of the center conductor 10 is the same as the outer diameter of the cylindrical portion 10b excluding the base end 10a has been described. However, the length may be shorter than the outer diameter of the cylindrical portion 10b. Even in such a case, since the area of the center conductor 10 facing the substrate 20 can be reduced, deterioration of the electrical characteristics of the coaxial connector 2 can be suppressed. As described above, when the outer diameter of the base end portion 10a is set to be equal to or less than the outer diameter of the cylindrical portion 10b excluding the base end portion 10a, deterioration of the electrical characteristics of the coaxial connector 2 can be suppressed.

なお、本明細書における「筒状」とは、完全な筒形状だけでなく、外径が一定ではなく変化する筒形状や、筒形状に凹凸や切欠き、突出部などが加わったものまで含む（概ね筒状、略筒状、大略筒状など）。なお、本明細書における「外径」とは、中心導体１０の突出方向（挿入方向Ａ）と直交する断面における最も長い部位の長さを意味する。また、本明細書における「円筒状」とは、完全な円筒形状だけでなく、外径が一定ではなく変化する円筒形状や、円筒形状に凹凸や切欠き、突出部などが加わったものまで含む（概ね円筒状、略円筒状、大略円筒状など）。   In this specification, the term “tubular shape” includes not only a perfect cylindrical shape but also a cylindrical shape having an outer diameter that is not constant and changes, or a cylindrical shape in which irregularities, notches, protrusions, and the like are added. (Approximately cylindrical, substantially cylindrical, roughly cylindrical, etc.). The “outer diameter” in the present specification means the length of the longest part in a cross section orthogonal to the projecting direction (insertion direction A) of the center conductor 10. In addition, the term “cylindrical” in this specification includes not only a perfect cylindrical shape, but also a cylindrical shape having an outer diameter that is not constant and changes, or a cylindrical shape in which irregularities, notches, protrusions, and the like are added. (Approximately cylindrical, substantially cylindrical, roughly cylindrical, etc.).

また実施の形態１では、内部端子４を形成する際に１枚の板状部材２６に曲げ加工を施すことにより形成する場合について説明したが、このような場合に限らない。複数の部材をもとに、絞り加工などの曲げ加工以外の加工を施すことにより、内部端子４を形成してもよい。なお、１枚の板状部材２６に曲げ加工を施すことにより内部端子４を形成した方が、精度良くかつ簡単に内部端子４を形成することができる。   In the first embodiment, the case where the internal terminal 4 is formed by bending one plate-shaped member 26 when forming the internal terminal 4 has been described. However, the present invention is not limited to such a case. The internal terminals 4 may be formed by performing processing other than bending, such as drawing, based on a plurality of members. It is to be noted that forming the internal terminals 4 by bending one plate-shaped member 26 allows the internal terminals 4 to be formed accurately and easily.

また実施の形態１では、図５Ｂ、５Ｃに説明したように、板状部材２６において第１端子部２８を第２端子部３０に対して折り曲げる場合について説明したが、このような場合に限らない。第１端子部２８ではなく、第２端子部３０を第１端子部２８に対して折り曲げるようにしてもよい。すなわち、第１端子部２８あるいは第２端子部３０のいずれか一方を折り曲げればよい。   Further, in the first embodiment, as described with reference to FIGS. 5B and 5C, the case where the first terminal portion 28 is bent with respect to the second terminal portion 30 in the plate-like member 26 has been described, but the present invention is not limited to such a case. . Instead of the first terminal portion 28, the second terminal portion 30 may be bent with respect to the first terminal portion 28. That is, one of the first terminal portion 28 and the second terminal portion 30 may be bent.

また変形例３では、中心導体６２に貫通孔６４を設けて抜け止め防止機構として機能させる場合について説明したが、このような場合に限らない。例えば、中心導体６２の側面に突起を設けるあるいは溝を設けて絶縁性部材８を配置することで、抜け止め防止機構として機能させてもよい。なお、中心導体６２の厚みは比較的小さいため、突起や溝ではなく貫通孔６４を設ける方が容易に加工を行うことができる。   Further, in the third modification, the case where the center conductor 62 is provided with the through hole 64 to function as the retaining prevention mechanism has been described, but the present invention is not limited to such a case. For example, a protrusion may be provided on the side surface of the center conductor 62 or a groove may be provided to dispose the insulating member 8 so as to function as a retaining prevention mechanism. In addition, since the thickness of the center conductor 62 is relatively small, it is easier to perform processing by providing the through hole 64 instead of the protrusion or groove.

本開示は、添付図面を参照しながら好ましい実施の形態に関連して充分に記載されているが、この技術の熟練した人々にとっては種々の変形や修正は明白である。そのような変形や修正は、添付した特許請求の範囲による本開示の範囲から外れない限りにおいて、その中に含まれると理解されるべきである。また、各実施の形態における要素の組合せや順序の変化は、本開示の範囲及び思想を逸脱することなく実現し得るものである。   While this disclosure has been fully described in connection with preferred embodiments thereof with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. It is to be understood that such changes and modifications are included therein unless they depart from the scope of the present disclosure as set forth in the appended claims. In addition, combinations of elements and changes in the order in each embodiment can be realized without departing from the scope and spirit of the present disclosure.

なお、前記様々な実施の形態および変形例のうちの任意の実施の形態あるいは変形例を適宜組み合わせることにより、それぞれの有する効果を奏するようにすることができる。   In addition, by appropriately combining any of the above-described various embodiments and modifications, the effects of the respective embodiments can be achieved.

本発明は、基板実装型同軸コネクタおよびその製造方法であれば適用可能である。   The present invention is applicable to any board-mounted coaxial connector and any method for manufacturing the same.

２ 同軸コネクタ（基板実装型同軸コネクタ）
４ 内部端子
６ 外部端子
８ 絶縁性部材
１０ 中心導体（第１端子部）
１０ａ 基端部
１０ｂ 筒部
１０ｃ 先端部
１２ 実装部（第２端子部）
１４ 貫通孔
１６ 外部導体（第３端子部）
１６ａ 溝
１６ｂ 基端部
１８ 実装部（第４端子部）
２０ 基板
２２ 表面側グランド電極
２４ 裏面側グランド電極
２６ 板状部材
２８ 第１端子部
２８ａ 第１の部分
２８ｂ 第２の部分
２８ｃ 先端
２８ｄ 先端
２９ 中心ライン
３０ 第２端子部
３１ 接続ライン
４０ 内部端子
４２ 中心導体
４２ａ 基端部
４２ｂ 筒部
４２ｃ 先端部
４３ 実装部
４４ 切欠き
５０ 内部端子
５２ 中心導体
５２ａ 基端部
５５ 切欠き
６０ 内部端子
６２ 中心導体
６２ａ 基端部
６２ｂ 筒部
６４ 貫通孔
７０ 内部端子
７２ａ 基端部
７２ｂ 筒部
７２ｃ 先端部
７４ 実装部
７６ 貫通孔
８０ 板状部材
８２ 第１の板部
８４ 第２の板部
８４ａ 基端部
８４ｂ 中央部
８４ｃ 先端部
８６ 中間体
８８ 筒部
８９ 鍔部
９０ 貫通孔2 Coaxial connector (board mounted coaxial connector)
4 Internal terminal 6 External terminal 8 Insulating member 10 Central conductor (first terminal portion)
10a Base end 10b Tube 10c Tip 12 Mounting part (second terminal part)
14 through hole 16 external conductor (third terminal)
16a Groove 16b Base end 18 Mounting part (fourth terminal part)
Reference Signs List 20 substrate 22 front side ground electrode 24 back side ground electrode 26 plate member 28 first terminal portion 28a first portion 28b second portion 28c tip 28d tip 29 center line 30 second terminal portion 31 connection line 40 internal terminal 42 Center conductor 42a Base end 42b Tube part 42c Tip part 43 Mounting part 44 Notch 50 Internal terminal 52 Center conductor 52a Base end 55 Notch 60 Internal terminal 62 Center conductor 62a Base end 62b Tube part 64 Through hole 70 Internal terminal 72a proximal end 72b cylindrical portion 72c distal end 74 mounting portion 76 through hole 80 plate member 82 first plate 84 second plate 84a proximal end 84b central portion 84c distal end 86 intermediate body 88 cylindrical portion 89 flange Part 90 through hole

Claims (3)

内部端子と、外部端子と、前記内部端子と前記外部端子の間に配置される絶縁性部材とを備え、前記内部端子および前記外部端子を介して基板に実装される基板実装型同軸コネクタであって、
前記内部端子は、相手方コネクタの端子に挿入されるように突出する第１端子部と、前記第１端子部の基端部から前記第１端子部の突出方向に交差する方向に延びて、前記基板に実装される第２端子部とを有し、
前記第１端子部は、前記基端部から筒状に延びる筒部を有し、前記基端部の外径は、前記基端部を除く前記筒部の外径に等しくかつ前記第２端子部の幅は前記基端部の外径に等しく設定される、基板実装型同軸コネクタ。 A board-mounted coaxial connector including an internal terminal, an external terminal, and an insulating member disposed between the internal terminal and the external terminal, and mounted on a substrate via the internal terminal and the external terminal. hand,
A first terminal protruding so as to be inserted into a terminal of a mating connector; and a first terminal extending from a base end of the first terminal in a direction intersecting a protruding direction of the first terminal. A second terminal portion mounted on the substrate,
The first terminal portion has a tubular portion extending in a tubular shape from the proximal end portion, and an outer diameter of the proximal end portion is equal to an outer diameter of the tubular portion excluding the proximal end portion and the second terminal. A board-mounted coaxial connector, wherein a width of the portion is set equal to an outer diameter of the base end portion . 前記第１端子部は、前記第２端子部と一体的な１枚の板状の部材で形成されており、
前記第１端子部の前記筒部は、周方向の一方側に延びる板状の第１の部分と、前記第１の部分から周方向の他方側に延びる板状の第２の部分とを備え、前記第１の部分と前記第２の部分の先端同士が対向するように配置されている、請求項１に記載の基板実装型同軸コネクタ。 The first terminal portion is formed of a single plate-shaped member integrated with the second terminal portion,
The cylindrical portion of the first terminal portion includes a plate-shaped first portion extending to one side in the circumferential direction, and a plate-shaped second portion extending from the first portion to the other side in the circumferential direction. 2. The board-mounted coaxial connector according to claim 1, wherein the first portion and the second portion are arranged such that tips thereof face each other. 3. 前記第１端子部の前記筒部は側面に貫通孔を有し、前記絶縁性部材は前記貫通孔を通るように配置されている、請求項１又は２に記載の基板実装型同軸コネクタ。   The board mounted type coaxial connector according to claim 1, wherein the cylindrical portion of the first terminal portion has a through hole on a side surface, and the insulating member is arranged to pass through the through hole.
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