JP5759819B2 - Method for manufacturing female connection terminal of charging connector for electric vehicle - Google Patents

Method for manufacturing female connection terminal of charging connector for electric vehicle Download PDF

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JP5759819B2
JP5759819B2 JP2011161820A JP2011161820A JP5759819B2 JP 5759819 B2 JP5759819 B2 JP 5759819B2 JP 2011161820 A JP2011161820 A JP 2011161820A JP 2011161820 A JP2011161820 A JP 2011161820A JP 5759819 B2 JP5759819 B2 JP 5759819B2
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connection terminal
shaft
female connection
contact
wall
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JP2013026117A (en
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正勝 池内
正勝 池内
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株式会社平川製作所
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本発明は、外部電力から充電を行う電気自動車およびハイブリッド車(以下、電気自動車という)に用いられる充電コネクタの雌型接続端子、およびその製造方法に関するものである。  The present invention relates to a female connection terminal of a charging connector used in an electric vehicle and a hybrid vehicle (hereinafter referred to as an electric vehicle) that are charged from external power, and a method of manufacturing the same.

近年、バッテリと電気モータの組み合わせを動力源とする環境負荷の少ない電気自動車が注目されている。また、平坦な道で低負荷の時やバッテリの充電量が多い時にはモータのみの走行(EV走行)とし、坂道などの高負荷の時やバッテリの充電量が少ない時にはエンジンとモータの併用による走行とするハイブリッド車が注目されている。  2. Description of the Related Art In recent years, electric vehicles with a low environmental load that use a combination of a battery and an electric motor as a power source have attracted attention. In addition, when driving on a flat road with a low load or a large amount of battery charge, only the motor travels (EV travel). When running on a hill or when there is a high load or when the battery charge is low, the engine and motor are used together. The hybrid vehicle is attracting attention.

これらの電気自動車は、一般に、バッテリとインバータと交流モータとを備えており、近年、更なる地球環境保護のために商用電源などの車両外部の電源から電力によりバッテリが充電されるようになされている。  These electric vehicles generally include a battery, an inverter, and an AC motor. In recent years, the battery is charged with electric power from a power source outside the vehicle such as a commercial power source for further global environmental protection. Yes.

下記の特許文献1には、例えば電気自動車のバッテリの端子間電圧が低下した場合に、外部交流電源を用いてバッテリを充電する技術が提案されている。充電の基本的な動作は、外部充電用電源に連なる充電コネクタを電気自動車側の充電コネクタを介してインバータに接続し、インバータ内のスイッチングトランジスタを開閉制御して外部交流出力を直流に整流し、バッテリに直流出力を供給することで充電するものである。  For example, Patent Document 1 below proposes a technique for charging a battery using an external AC power source when the voltage between terminals of the battery of the electric vehicle is lowered. The basic operation of charging is to connect a charging connector connected to the external charging power source to the inverter via the charging connector on the electric vehicle side, and open / close control the switching transistor in the inverter to rectify the external AC output to DC, The battery is charged by supplying a direct current output.

そして、このような電気自動車用充電装置においては、下記の特許文献2に記載のように、充電コネクタの雌型接続端子および雄型接続端子には、電気的接続の安定性を向上させるために、銀メッキが施されている。  In such a charging device for an electric vehicle, as described in Patent Document 2 below, the female connection terminal and the male connection terminal of the charging connector are provided to improve the stability of electrical connection. Silver plating is given.

特開平11−205909号公報JP-A-11-205909 特開2001−307834号公報Japanese Patent Laid-Open No. 2001-307834

ところで、外部充電用電源に連なる充電コネクタおよび電気自動車側の充電コネクタのうちのいずれか一方に、雌型接続端子が組み込まれ、同他方に、雄型接続端子が組み込まれており、このような電気自動車の充電コネクタでは、コネクタ同士の接続・離脱の操作の際に、雌型接続端子に対する雄型接続端子の差し込み・抜き取りが繰り返されて、雌型接続端子および雄型接続端子に施された銀メッキが、接続による摩擦・擦れなどによって剥がれてしまい、雌型接続端子および雄型接続端子同士の電気的接続の安定性を向上させることができないという問題があった。  By the way, a female connection terminal is incorporated in one of the charging connector connected to the external charging power source and the charging connector on the electric vehicle side, and a male connection terminal is incorporated in the other, In the charging connector of an electric vehicle, when connecting / disconnecting the connectors, the male connection terminal is repeatedly inserted into and extracted from the female connection terminal, and applied to the female connection terminal and the male connection terminal. There is a problem that the silver plating is peeled off due to friction and rubbing due to the connection, and the stability of the electrical connection between the female connection terminal and the male connection terminal cannot be improved.

本発明の目的は、上記の従来技術の問題を解決し、電気自動車用充電コネクタに組み込まれている雌型接続端子に対する雄型接続端子の差し込み・抜き取りの際に両端子の接触部分が少なく、かつ両端子の接触部分が曲面同士の接触であるために、雌型接続端子および雄型接続端子の接続による摩擦・擦れなどが少なく、両端子の銀メッキの剥がれが非常に少なくてすみ、両接続端子同士の電気的接続の安定性を向上させることができる、電気自動車用充電コネクタの雌型接続端子を提供すること、および雌型接続端子を非常に生産性よく、高精度をもって、かつ安価に提供することができ、ひいては雌型接続端子を組み込んだ充電コネクタを用いる電気自動車およびハイブリッド車の製造コストを低減することができる、電気自動車用充電コネクタの雌型接続端子の製造方法を提供することにある。  The object of the present invention is to solve the above-mentioned problems of the prior art, and there are few contact portions of both terminals when inserting / removing the male connection terminal with respect to the female connection terminal incorporated in the charging connector for an electric vehicle, In addition, since the contact portion of both terminals is a contact between curved surfaces, there is little friction and rubbing due to the connection between the female connection terminal and the male connection terminal, and the silver plating of both terminals can be removed very little. To provide a female connection terminal for an electric vehicle charging connector that can improve the stability of the electrical connection between the connection terminals, and to make the female connection terminal highly productive, highly accurate, and inexpensive. Charging for electric vehicles that can reduce the manufacturing cost of electric vehicles and hybrid vehicles using charging connectors incorporating female connection terminals. It is to provide a method for manufacturing a female connector terminal of connector.

上記の目的を達成するために、請求項1の発明は、電気自動車用充電コネクタに組み込まれる雌型接続端子(1)であって、雄型接続端子(11)のシャフト(12)を挿入する雌型接続端子(1)のシャフト挿入筒状部(2)の先端開孔部の内側に、孔奥部に向かって漸次先細となるテーパー状案内壁部(3)と、テーパー状案内壁部(3)の径小内端部に連なりかつ雄型接続端子シャフト(12)の外径と同じかまたは若干小さい内径を有するシャフト接触用環状壁部(4)とが設けられ、シャフト挿入用筒状部(2)の周壁に、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を横断する複数のスリット(5)がシャフト挿入用筒状部(2)の長手方向に設けられて、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を含むシャフト挿入用筒状部(2)が複数個に分断せしめられており、分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の周方向両端のスリット(5)寄り部分に、それぞれ雄型接続端子シャフト(12)の外面に接触しない非接触凹面状壁部(7)が設けられていることを特徴としている。  In order to achieve the above object, the invention of claim 1 is a female connection terminal (1) incorporated in a charging connector for an electric vehicle, wherein a shaft (12) of the male connection terminal (11) is inserted. A tapered guide wall portion (3) that gradually tapers toward the back of the hole inside the tip opening portion of the shaft insertion cylindrical portion (2) of the female connection terminal (1), and a tapered guide wall portion A shaft insertion tube provided with a shaft contact annular wall portion (4) connected to the small inner end portion of (3) and having an inner diameter that is the same as or slightly smaller than the outer diameter of the male connection terminal shaft (12). A plurality of slits (5) crossing the tapered guide wall portion (3) and the shaft contact annular wall portion (4) are formed in the longitudinal direction of the cylindrical portion (2) for inserting the shaft. Tapered guide wall (3) and shaft contact ring provided The shaft insertion cylindrical part (2) including the wall part (4) is divided into a plurality of parts, and each of the divided shaft contact dividing wall parts (4a) has a cross-sectional arc-shaped inner wall part (6). Non-contact concave wall portions (7) that do not come into contact with the outer surface of the male connection terminal shaft (12) are provided in the portions near the slits (5) at both ends in the circumferential direction, respectively.

請求項2の発明は、電気自動車用充電コネクタに組み込まれる雌型接続端子(1)の製造方法であって、雄型接続端子(11)のシャフト(12)を挿入する雌型接続端子(1)のシャフト挿入筒状部(2)の先端開孔部の内側に、孔奥部に向かって漸次先細となるテーパー状案内壁部(3)と、テーパー状案内壁部(3)の径小内端部に連なりかつ雄型接続端子シャフト(12)の外径と同じかまたは若干小さい内径を有するシャフト接触用環状壁部(4)とが設けられ、シャフト挿入用筒状部(2)の周壁に、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を横断する複数のスリット(5)がシャフト挿入用筒状部(2)の長手方向に設けられて、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を含むシャフト挿入用筒状部(2)が複数個に分断せしめられており、一方、この雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に差し込んで、該先端開孔部を押し開くためのテーパー状壁部(17)と、このテーパー状壁部(17)の内側の切削ドリル(14)を挿通するための貫通孔(18)とを有する切削加工用治具(15)を用意しておき、雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に、切削加工用治具(15)を嵌め被せて、治具(15)のテーパー状壁部(17)をシャフト挿入用筒状部(2)の先端開孔部に差し込むことにより、先端開孔部を外側に押し開き、該シャフト挿入用筒状部(2)の複数のスリット(5)により分断された各テーパー状分断案内壁部(3a)およびこれに連なるシャフト接触用分断壁部(4a)を拡開し、この拡開状態において治具(15)の貫通孔に切削ドリル(14)の刃先を挿入して、分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の周方向両端のスリット(5)寄り部分を切削することにより、雄型接続端子シャフト(12)の外面に接触しない非接触凹面状壁部(7)をそれぞれ形成することを特徴としている。   Invention of Claim 2 is a manufacturing method of the female connection terminal (1) incorporated in the charging connector for electric vehicles, Comprising: The female connection terminal (1) which inserts the shaft (12) of a male connection terminal (11) The tapered guide wall portion (3) that gradually tapers toward the back of the hole and the small diameter of the tapered guide wall portion (3) inside the tip opening portion of the shaft insertion cylindrical portion (2) of FIG. A shaft contact annular wall (4) connected to the inner end and having an inner diameter that is the same as or slightly smaller than the outer diameter of the male connection terminal shaft (12) is provided. A plurality of slits (5) crossing the tapered guide wall portion (3) and the shaft contact annular wall portion (4) are provided in the peripheral wall in the longitudinal direction of the shaft insertion tubular portion (2) to form a tapered shape. Including a guide wall (3) and a shaft contacting annular wall (4) The shaft-inserting cylindrical portion (2) is divided into a plurality of pieces, and on the other hand, the shaft-inserting cylindrical portion (2) of the female connection terminal (1) is inserted into the opening portion of the shaft. A cutting treatment jig having a tapered wall portion (17) for pushing open the opening portion and a through hole (18) for inserting a cutting drill (14) inside the tapered wall portion (17). A tool (15) is prepared, and a cutting jig (15) is fitted over the tip opening portion of the cylindrical portion (2) for inserting the shaft of the female connection terminal (1). By inserting the tapered wall portion (17) of 15) into the tip opening portion of the shaft insertion tubular portion (2), the tip opening portion is pushed open to the outside, and the shaft insertion tubular portion (2). Each of the tapered dividing guide walls (3a) divided by the plurality of slits (5) and The dividing wall portion for shaft contact (4a) is expanded, and in this expanded state, the cutting edge of the cutting drill (14) is inserted into the through hole of the jig (15), and the divided dividing wall portion for shaft contact is divided. The non-contact concave wall portion that does not contact the outer surface of the male connection terminal shaft (12) by cutting the portions near the slits (5) at both ends in the circumferential direction of the inner wall portion (6) having a cross-sectional arc of (4a) ( 7) is formed, respectively.

請求項1の発明は、電気自動車用充電コネクタに組み込まれる雌型接続端子(1)であって、雄型接続端子(11)のシャフト(12)を挿入する雌型接続端子(1)のシャフト挿入筒状部(2)の先端開孔部の内側に、孔奥部に向かって漸次先細となるテーパー状案内壁部(3)と、テーパー状案内壁部(3)の径小内端部に連なりかつ雄型接続端子シャフト(12)の外径と同じかまたは若干小さい内径を有するシャフト接触用環状壁部(4)とが設けられ、シャフト挿入用筒状部(2)の周壁に、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を横断する複数のスリット(5)がシャフト挿入用筒状部(2)の長手方向に設けられて、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を含むシャフト挿入用筒状部(2)が複数個に分断せしめられており、分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の周方向両端のスリット(5)寄り部分に、それぞれ雄型接続端子シャフト(12)の外面に接触しない非接触凹面状壁部(7)が設けられていることを特徴とするもので、請求項1の発明によれば、電気自動車用充電コネクタに組み込まれている雌型接続端子(1)に対する雄型接続端子(11)の差し込み・抜き取りの際に両端子(1)(11)の接触部分が少なく、かつ両端子(1)(11)の接触部分が曲面同士の接触であるために、雌型接続端子(1)および雄型接続端子(11)の接続による摩擦・擦れなどが少なく、両端子(1)(11)の銀メッキの剥がれが非常に少なくてすみ、雌型接続端子(1)および雄型接続端子(11)同士の電気的接続の安定性を向上させることができるという効果を奏する。  The invention of claim 1 is a female connection terminal (1) incorporated in a charging connector for an electric vehicle, wherein the shaft of the female connection terminal (1) into which the shaft (12) of the male connection terminal (11) is inserted. A tapered guide wall portion (3) that gradually tapers toward the back of the hole inside the distal opening portion of the insertion cylindrical portion (2), and a small inner end portion of the tapered guide wall portion (3) And an annular wall portion for shaft contact (4) having an inner diameter that is the same as or slightly smaller than the outer diameter of the male connection terminal shaft (12), and the peripheral wall of the cylindrical portion for shaft insertion (2), A plurality of slits (5) crossing the tapered guide wall portion (3) and the shaft contact annular wall portion (4) are provided in the longitudinal direction of the shaft insertion tubular portion (2), and the tapered guide wall portion is provided. Shaft insertion including (3) and annular wall for shaft contact (4) The cylindrical part (2) is divided into a plurality of parts, and the divided shaft wall part (4a) for each divided part is close to the slits (5) at both ends in the circumferential direction of the arcuate inner wall part (6). The parts are provided with non-contact concave wall portions (7) that do not contact the outer surface of the male connection terminal shaft (12), respectively. According to the invention of claim 1, the electric vehicle When the male connection terminal (11) is inserted into or extracted from the female connection terminal (1) incorporated in the charging connector for the battery, both the terminals (1) and (11) have few contact portions, and both terminals (1) Since the contact portion of (11) is contact between curved surfaces, there is little friction and rubbing due to the connection of the female connection terminal (1) and the male connection terminal (11), and both terminals (1) (11) The silver plating peels off very little and the female connection terminal ( ) And there is an effect that it is possible to improve the male connection terminal (11) stability of the electrical connection between the.

請求項2の発明は、電気自動車用充電コネクタに組み込まれる雌型接続端子(1)の製造方法であって、雄型接続端子(11)のシャフト(12)を挿入する雌型接続端子(1)のシャフト挿入筒状部(2)の先端開孔部の内側に、孔奥部に向かって漸次先細となるテーパー状案内壁部(3)と、テーパー状案内壁部(3)の径小内端部に連なりかつ雄型接続端子シャフト(12)の外径と同じかまたは若干小さい内径を有するシャフト接触用環状壁部(4)とが設けられ、シャフト挿入用筒状部(2)の周壁に、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を横断する複数のスリット(5)がシャフト挿入用筒状部(2)の長手方向に設けられて、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を含むシャフト挿入用筒状部(2)が複数個に分断せしめられており、一方、この雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に差し込んで、該先端開孔部を押し開くためのテーパー状壁部(17)と、このテーパー状壁部(17)の内側の切削ドリル(14)を挿通するための貫通孔(18)とを有する切削加工用治具(15)を用意しておき、雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に、切削加工用治具(15)を嵌め被せて、治具(15)のテーパー状壁部(17)をシャフト挿入用筒状部(2)の先端開孔部に差し込むことにより、先端開孔部を外側に押し開き、該シャフト挿入用筒状部(2)の複数のスリット(5)により分断された各テーパー状分断案内壁部(3a)およびこれに連なるシャフト接触用分断壁部(4a)を拡開し、この拡開状態において治具(15)の貫通孔に切削ドリル(14)の刃先を挿入して、分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の周方向両端のスリット(5)寄り部分を切削することにより、雄型接続端子シャフト(12)の外面に接触しない非接触凹面状壁部(7)をそれぞれ形成することを特徴とするもので、請求項2の発明によれば、電気自動車用充電コネクタに組み込まれる雌型接続端子(1)および雄型接続端子(11)の接続による摩擦・擦れなどが少なく、銀メッキの剥がれが非常に少なくてすみ、かつ両端子(1)(11)同士の電気的接続の安定性を向上させることができる雌型接続端子(1)を、非常に生産性よく、高精度をもって、かつ安価に提供することができ、ひいては雌型接続端子(1)を組み込んだ充電コネクタを用いる電気自動車およびハイブリッド車の製造コストを低減することができるという効果を奏する。  Invention of Claim 2 is a manufacturing method of the female connection terminal (1) incorporated in the charging connector for electric vehicles, Comprising: The female connection terminal (1) which inserts the shaft (12) of a male connection terminal (11) The tapered guide wall portion (3) that gradually tapers toward the back of the hole and the small diameter of the tapered guide wall portion (3) inside the tip opening portion of the shaft insertion cylindrical portion (2) of FIG. A shaft contact annular wall (4) connected to the inner end and having an inner diameter that is the same as or slightly smaller than the outer diameter of the male connection terminal shaft (12) is provided. A plurality of slits (5) crossing the tapered guide wall portion (3) and the shaft contact annular wall portion (4) are provided in the peripheral wall in the longitudinal direction of the shaft insertion tubular portion (2) to form a tapered shape. Including a guide wall (3) and a shaft contacting annular wall (4) The shaft-inserting cylindrical portion (2) is divided into a plurality of pieces, and on the other hand, the shaft-inserting cylindrical portion (2) of the female connection terminal (1) is inserted into the opening portion of the shaft. A cutting treatment jig having a tapered wall portion (17) for pushing open the opening portion and a through hole (18) for inserting a cutting drill (14) inside the tapered wall portion (17). A tool (15) is prepared, and a cutting jig (15) is fitted over the tip opening portion of the cylindrical portion (2) for inserting the shaft of the female connection terminal (1). By inserting the tapered wall portion (17) of 15) into the tip opening portion of the shaft insertion tubular portion (2), the tip opening portion is pushed open to the outside, and the shaft insertion tubular portion (2). Each of the tapered dividing guide walls (3a) divided by the plurality of slits (5) and The dividing wall portion for shaft contact (4a) is expanded, and in this expanded state, the cutting edge of the cutting drill (14) is inserted into the through hole of the jig (15), and the divided dividing wall portion for shaft contact is divided. The non-contact concave wall portion that does not contact the outer surface of the male connection terminal shaft (12) by cutting the portions near the slits (5) at both ends in the circumferential direction of the inner wall portion (6) having a cross-sectional arc of (4a) ( 7) is formed, and according to the invention of claim 2, friction due to the connection of the female connection terminal (1) and the male connection terminal (11) incorporated in the charging connector for an electric vehicle -The female connection terminal (1), which can be rubbed, has very little peeling of the silver plating, and can improve the stability of electrical connection between the terminals (1) and (11), is very High productivity, high accuracy, and low cost It can be provided an effect that it is possible to reduce the manufacturing cost of electric vehicles and hybrid vehicles using thus charging connector incorporating the female connection terminal (1).

電気自動車の車両側充電口の充電コネクタに外部交流電源側充電コネクタを接続する前の状態を示す斜視断面図である。It is a perspective sectional view showing the state before connecting the external AC power supply side charging connector to the charging connector of the vehicle side charging port of the electric vehicle. 車両側充電コネクタと外部交流電源側充電コネクタの分解斜視図である。It is a disassembled perspective view of a vehicle side charging connector and an external AC power supply side charging connector. 従来の電気自動車用充電コネクタの雌型接続端子と雄型接続端子の接続状態を簡略化して説明するための概略横断面図である。It is a schematic cross-sectional view for simplifying and explaining a connection state of a female connection terminal and a male connection terminal of a conventional charging connector for an electric vehicle. 本発明の方法により製造された電気自動車用充電コネクタの雌型接続端子と、雄型接続端子の接続状態を簡略化して説明するための概略横断面図である。It is a schematic cross-sectional view for simplifying and explaining the connection state of the female connection terminal and the male connection terminal of the charging connector for electric vehicles manufactured by the method of the present invention. 本発明の方法により電気自動車用充電コネクタの雌型接続端子を製造する際の簡略化した説明図で、治具により雌型接続端子のシャフト挿入用筒状部の先端開孔部を外側に押し開いた状態を示す概略横断面図である。FIG. 6 is a simplified explanatory diagram when manufacturing a female connection terminal of a charging connector for an electric vehicle by the method of the present invention, and pushes the tip opening portion of the cylindrical portion for inserting the shaft of the female connection terminal outward by a jig. It is a schematic cross-sectional view which shows the open state. 本発明の方法により製造された雌型接続端子と、雄型接続端子の具体的な実施形態を示す拡大側面図である。It is an expanded side view which shows specific embodiment of the female connection terminal manufactured by the method of this invention, and a male connection terminal. 図6A−A線に沿う拡大断面図で、雌型接続端子のシャフト挿入用筒状部の先端開孔部に、雄型接続端子のシャフトが挿入された状態を示している。FIG. 6 is an enlarged cross-sectional view taken along line AA in FIG. 6, showing a state in which the shaft of the male connection terminal is inserted into the tip opening portion of the cylindrical portion for inserting the shaft of the female connection terminal. 図8〜図12は、本発明の方法により充電コネクタの雌型接続端子を製造する工程を順に示すもので、図8は、切削加工用治具に対して雌型接続端子のシャフト挿入用筒状部の先端開孔部を対向させたいわゆる芯出し工程を示す概略断面図である。8 to 12 sequentially show steps of manufacturing the female connection terminal of the charging connector by the method of the present invention. FIG. 8 shows a shaft insertion tube of the female connection terminal with respect to the cutting jig. It is a schematic sectional drawing which shows what is called the centering process which made the front-end | tip opening part of the shape part faced. 治具により雌型接続端子のシャフト挿入用筒状部の先端開孔部を外側に押し開く工程を示す概略断面図である。It is a schematic sectional drawing which shows the process of pushing and opening the front-end | tip opening part of the cylindrical part for shaft insertion of a female type | mold connection terminal with a jig | tool. 治具側より切削ドリルの刃先を挿入して、拡開状態の雌型接続端子のシャフト挿入用筒状部の先端開孔部の内壁を切削する工程を示す概略断面図である。It is a schematic sectional drawing which shows the process of inserting the blade tip of a cutting drill from the jig | tool side, and cutting the inner wall of the front-end | tip opening part of the cylindrical part for shaft insertion of the female connection terminal of an expansion state. 切削工程後に、切削ドリルの刃先を治具側に取り出す工程を示す概略断面図である。It is a schematic sectional drawing which shows the process of taking out the blade edge | tip of a cutting drill to a jig | tool side after a cutting process. 切削加工済みの雌型接続端子を治具より離脱させる工程を示す概略断面図である。It is a schematic sectional drawing which shows the process of detaching | cutting the female type | mold connection terminal after cutting from the jig | tool.

つぎに、本発明の実施の形態を、図面を参照して説明するが、本発明はこれらに限定されるものではない。  Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto.

図1は、電気自動車(27)の側壁(28)の車両側充電口(30)に装備された充電コネクタ(31)に、外部充電用電源(20)にコード(20a)を介して連なる外部交流電源側充電コネクタ(21)を接続する前の状態を示す斜視断面図である。  FIG. 1 shows an external connection connected to an external charging power source (20) via a cord (20a) to a charging connector (31) mounted on a vehicle side charging port (30) of a side wall (28) of an electric vehicle (27). It is a perspective sectional view showing the state before connecting the AC power supply side charging connector (21).

例えば、電気自動車(27)のバッテリの端子間電圧が低下した場合に、外部交流電源(20)を用いてバッテリを充電する。充電の基本的な動作は、外部充電用電源(20)にコード(20a)を介して連なる充電コネクタ(21)を、電気自動車(27)の車両側充電口(30)に装備された充電コネクタ(31)に接続して交流を供給し、電気自動車(27)側のインバータ内のスイッチングトランジスタを開閉制御して外部交流出力を直流に整流し、バッテリに直流出力を供給することで充電する。  For example, when the voltage between the terminals of the battery of the electric vehicle (27) decreases, the battery is charged using the external AC power supply (20). The basic operation of charging is that a charging connector (21) connected to an external charging power source (20) via a cord (20a) is connected to a charging connector mounted on a vehicle-side charging port (30) of an electric vehicle (27). (31) is connected to supply alternating current, the switching transistor in the inverter on the electric vehicle (27) side is controlled to open and close, the external alternating current output is rectified to direct current, and the battery is charged by supplying the direct current output.

図2は、電気自動車(27)の車両側充電コネクタ(31)と外部交流電源側充電コネクタ(21)の分解斜視図である。  FIG. 2 is an exploded perspective view of the vehicle side charging connector (31) and the external AC power source side charging connector (21) of the electric vehicle (27).

図1および図2を参照すると、外部交流電源側充電コネクタ(21)は、ハウジング(22)の内部に、取付け用パイプ(23)をそれぞれ介して3本の雌型接続端子(1)が装備されている。3本の雌型接続端子(1)には、前方に開口した略筒形のハウジング先端部(22a)が被せられ、各雌型接続端子(1)の先端部は保護パイプ(24)によってそれぞれカバーされている。3本の雌型接続端子(1)は、例えばパワー用、シグナル用、およびGND用である。略筒形のハウジング先端部(22a)の下端部には、位置決め用凸部(25)が下方突出状に設けられている。  Referring to FIG. 1 and FIG. 2, the external AC power supply side charging connector (21) is equipped with three female connection terminals (1) inside the housing (22) via mounting pipes (23), respectively. Has been. The three female connection terminals (1) are covered with a front end portion (22a) of a substantially cylindrical housing that opens forward, and the front end portions of the respective female connection terminals (1) are respectively provided by protective pipes (24). Covered. The three female connection terminals (1) are for power, signal, and GND, for example. A positioning projection (25) is provided in a projecting downward direction at the lower end of the substantially cylindrical housing tip (22a).

なお、この実施形態では、外部交流電源側充電コネクタ(21)に3本の雌型接続端子(1)が装備されているが、通常、外部交流電源側充電コネクタ(21)には、これらの雌型接続端子(1)が合計で、3〜9個装備される。  In this embodiment, the external AC power supply side charging connector (21) is equipped with three female connection terminals (1). A total of 3 to 9 female connection terminals (1) are provided.

一方、電気自動車(27)の車両側充電コネクタ(31)は、ハウジング(32)の内部に、取付け用パイプ(33)をそれぞれ介して3本の雄型接続端子(11)が装備されている。3本の雄型接続端子(11)には、前方に開口した略筒形のハウジング先端部(32a)が被せられ、各雄型接続端子(11)の先端部は保護パイプ(34)によってそれぞれカバーされている。3本の雄型接続端子(11)は、上記雌型接続端子(1)に対応して、パワー用、シグナル用、およびGND用である。略筒形のハウジング先端部(32a)の下端部内側には、位置決め用凹部(35)が設けられている。  On the other hand, the vehicle-side charging connector (31) of the electric vehicle (27) is equipped with three male connection terminals (11) inside the housing (32) via attachment pipes (33), respectively. . The three male connection terminals (11) are covered with a front end portion (32a) of a substantially cylindrical housing that opens forward, and the front end portions of the male connection terminals (11) are respectively protected by protective pipes (34). Covered. The three male connection terminals (11) are for power, signal, and GND, corresponding to the female connection terminal (1). A positioning recess (35) is provided on the inner side of the lower end of the substantially cylindrical housing tip (32a).

なお、この実施形態では、車両側充電コネクタ(31)に3本の雄型接続端子(11)が装備されているが、通常、車両側充電コネクタ(31)には、これらの雄型接続端子(11)が雌型接続端子(1)と同数で、合計3〜9個装備される。  In this embodiment, the vehicle-side charging connector (31) is equipped with three male connection terminals (11). Usually, the vehicle-side charging connector (31) has these male connection terminals. (11) is the same number as the female connection terminals (1), and a total of 3 to 9 are provided.

図3は、従来の電気自動車用充電コネクタの雌型接続端子(1)と雄型接続端子(11)の接続状態を簡略化して説明するための概略横断面図である。  FIG. 3 is a schematic cross-sectional view for simplifying and explaining the connection state of the female connection terminal (1) and the male connection terminal (11) of the conventional electric vehicle charging connector.

同図において、電気自動車用充電コネクタに組み込まれる雌型接続端子(1)は、雄型接続端子(11)のシャフト(12)を挿入するシャフト挿入筒状部(2)の先端開孔部の内側に、シャフト接触用環状壁部(4)が設けられ、シャフト挿入用筒状部(2)の周壁に、シャフト接触用環状壁部(4)を横断する3つのスリット(5)がシャフト挿入用筒状部(2)の長手方向に設けられて、シャフト接触用環状壁部(4)を含むシャフト挿入用筒状部(2)が3個に分断せしめられて、3個のシャフト接触用分断壁部(4a)が形成されている。  In the figure, a female connection terminal (1) incorporated in a charging connector for an electric vehicle is a front opening portion of a shaft insertion tubular portion (2) into which a shaft (12) of a male connection terminal (11) is inserted. Inside, an annular wall portion (4) for shaft contact is provided, and three slits (5) crossing the annular wall portion for shaft contact (4) are inserted into the peripheral wall of the cylindrical portion for shaft insertion (2). The shaft-inserting cylindrical portion (2) including the shaft-contacting annular wall portion (4) provided in the longitudinal direction of the cylindrical portion (2) for the shaft is divided into three parts for contacting the three shafts. A dividing wall portion (4a) is formed.

このような電気自動車用充電コネクタの雌型接続端子(1)および雄型接続端子(11)には、電気的接続の安定性を向上させるために、これらの表面全体に銀メッキが施されている。  The female connection terminal (1) and the male connection terminal (11) of the charging connector for an electric vehicle are subjected to silver plating on the entire surface in order to improve the stability of the electrical connection. Yes.

上述のように、電気自動車(27)の車両側充電口(30)に装備された充電コネクタ(31)、および外部充電用電源(20)にコード(20a)を介して連なる外部交流電源側充電コネクタ(21)では、充電コネクタ(21)(31)同士の接続・離脱の操作の際に、雌型接続端子(1)に対する雄型接続端子(11)の差し込み・抜き取りが繰り返されて、雌型接続端子(1)および雄型接続端子(11)の表面に施された銀メッキが、接続による摩擦・擦れなどによって剥がれてしまい、特に、雄型接続端子(11)のシャフト(12)表面の銀メッキの摩耗度が激しく、雌型接続端子(1)および雄型接続端子(11)同士の電気的接続の安定性を向上させることができないという問題があった。  As described above, the external AC power supply side charging connected to the charging connector (31) provided in the vehicle side charging port (30) of the electric vehicle (27) and the external charging power source (20) via the cord (20a). In the connector (21), the insertion / removal of the male connection terminal (11) with respect to the female connection terminal (1) is repeated during the operation of connecting / disconnecting the charging connectors (21) (31) to each other. The silver plating applied to the surfaces of the mold connection terminal (1) and the male connection terminal (11) peels off due to friction and rubbing due to the connection, and in particular, the surface of the shaft (12) of the male connection terminal (11). There was a problem that the degree of wear of the silver plating was so severe that the stability of the electrical connection between the female connection terminal (1) and the male connection terminal (11) could not be improved.

本発明者らは、上記の点に鑑み鋭意研究を重ねた結果、従来は、図3に示すように、特に、雌型接続端子(1)のシャフト挿入用筒状部(2)において、これの長手方向に設けられた各スリット(5)の左側壁面および右側壁面と、スリット(5)により分断された各シャフト接触用分断壁部(4a)内面の横断面円弧状内壁部(6)の周方向の左右両端部との境界部分に、それぞれ略直角状の鋭い角部が形成されており、これらの略直角状の鋭い角部と雄型接続端子(11)のシャフト(12)表面との接触が、いわば線状接触となされている。このため、雌型接続端子(1)に対する雄型接続端子(11)の差し込み・抜き取りが繰り返された際、雄型接続端子(11)のシャフト(12)表面の銀メッキが、これらの鋭い角部によって削り取られてしまい、雌型接続端子(1)および雄型接続端子(11)同士の電気的接続の安定性を阻害していることを見出した。  As a result of intensive studies in view of the above points, the inventors have heretofore known, in particular, in the cylindrical portion (2) for inserting the shaft of the female connection terminal (1) as shown in FIG. Of the left wall surface and the right wall surface of each slit (5) provided in the longitudinal direction of the inner wall portion (6) of the cross-sectional arc of the inner wall surface (4a) of the shaft contact dividing wall portion (4a) divided by the slit (5) Nearly right-angled sharp corners are formed at the boundary portions between the left and right ends in the circumferential direction. These substantially right-angled sharp corners and the surface of the shaft (12) of the male connection terminal (11) In other words, the contact is a linear contact. For this reason, when the insertion and removal of the male connection terminal (11) with respect to the female connection terminal (1) is repeated, the silver plating on the surface of the shaft (12) of the male connection terminal (11) causes these sharp corners. It has been found that it has been scraped off by the part, impeding the stability of the electrical connection between the female connection terminal (1) and the male connection terminal (11).

図4は、本発明の方法により製造された雌型接続端子(1)と、雄型接続端子(11)の接続状態を簡略化して説明するための概略横断面図である。  FIG. 4 is a schematic cross-sectional view for simplifying and explaining the connection state of the female connection terminal (1) manufactured by the method of the present invention and the male connection terminal (11).

そこで、本発明者らは、雌型接続端子(1)のシャフト挿入用筒状部(2)の分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の周方向両端のスリット(5)寄り部分に、それぞれ雄型接続端子シャフト(12)の外面に接触しない非接触凹面状壁部(7)を設けることにより、雌型接続端子(1)に対する雄型接続端子(11)の差し込み・抜き取りが繰り返された際、雄型接続端子(11)のシャフト(12)表面の銀メッキが、従来の鋭い角部によって削り取られることなく、雌型接続端子(1)および雄型接続端子(11)同士の電気的接続の安定性を向上させることができることを見出し、本発明を完成するに至ったものである。   Therefore, the inventors of the inner wall portion (6) of the arc-shaped cross section of each divided shaft contact wall portion (4a) of the shaft insertion cylindrical portion (2) of the female connection terminal (1). By providing non-contact concave wall portions (7) that are not in contact with the outer surface of the male connection terminal shaft (12) in the portions near the slits (5) at both ends in the circumferential direction, the male type for the female connection terminal (1) When insertion / extraction of the connection terminal (11) is repeated, the silver plating on the surface of the shaft (12) of the male connection terminal (11) is not scraped off by the conventional sharp corners, and the female connection terminal (1 And the stability of electrical connection between the male connection terminals (11) can be improved, and the present invention has been completed.

図5は、本発明の方法により電気自動車用充電コネクタの雌型接続端子(1)を製造する際の簡略化した説明図で、後述する治具(15)により雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部を外側に押し開いた状態を示す概略横断面図である。  FIG. 5 is a simplified explanatory view when the female connection terminal (1) of the charging connector for an electric vehicle is manufactured by the method of the present invention, and the female connection terminal (1) is formed by a jig (15) described later. It is a schematic cross-sectional view which shows the state which pushed and opened the front-end | tip opening part of the cylindrical part for shaft insertion (2) outside.

同図において、本発明による電気自動車用充電コネクタに組み込まれる雌型接続端子(1)の製造方法は、雄型接続端子(11)のシャフト(12)を挿入する雌型接続端子(1)のシャフト挿入筒状部(2)の先端開孔部に、切削加工用治具(15)を嵌め被せて差し込むことにより、先端開孔部を外側に押し開き、該シャフト挿入用筒状部(2)の3つのスリット(5)により分断された各シャフト接触用分断壁部(4a)を拡開し、この拡開状態において治具(15)の貫通孔に切削ドリルの刃先を挿入して、分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の周方向両端のスリット(5)寄り部分を切削することにより、雄型接続端子シャフト(12)の外面に接触しない非接触凹面状壁部(7)をそれぞれ形成するものである。   In this figure, the method for manufacturing the female connection terminal (1) incorporated in the electric vehicle charging connector according to the present invention includes the female connection terminal (1) for inserting the shaft (12) of the male connection terminal (11). By inserting and inserting the cutting jig (15) in the tip opening portion of the shaft insertion cylindrical portion (2), the tip opening portion is pushed open to the outside, and the shaft insertion cylindrical portion (2 ) Each of the shaft contact dividing walls (4a) divided by the three slits (5) is expanded, and in this expanded state, the cutting edge of the cutting drill is inserted into the through hole of the jig (15), The outer surface of the male connection terminal shaft (12) is cut by cutting the portions close to the slits (5) at both ends in the circumferential direction of the inner wall portion (6) in the cross section of the divided wall portion (4a) for contacting the shaft. Non-contact concave wall (7) that does not touch It is intended to formed.

図6は、本発明の方法により製造された雌型接続端子(1)と、雄型接続端子(11)の具体的な実施形態を示す拡大側面図である。図7は、図6A−A線に沿う拡大断面図で、本発明の方法により製造された雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に、雄型接続端子(11)のシャフト(12)が挿入された状態を示している。  FIG. 6 is an enlarged side view showing a specific embodiment of the female connection terminal (1) and the male connection terminal (11) manufactured by the method of the present invention. FIG. 7 is an enlarged cross-sectional view taken along the line AA in FIG. 6. The state where the shaft (12) of the connection terminal (11) is inserted is shown.

なお、この実施形態では、外部交流電源側充電コネクタ(21)に3本の雌型接続端子(1)が装備され、車両側充電コネクタ(31)に3本の雄型接続端子(11)が装備されているが、これらは逆に装備されていてもよく、要するに、外部交流電源側充電コネクタ(21)および車両側充電コネクタ(31)のうちのいずれか一方に、雌型接続端子(1)が組み込まれ、同他方に、雄型接続端子(11)が組み込まれておればよい。   In this embodiment, the external AC power supply side charging connector (21) is equipped with three female connection terminals (1), and the vehicle side charging connector (31) has three male connection terminals (11). Although equipped, these may be equipped in reverse. In short, either one of the external AC power supply side charging connector (21) and the vehicle side charging connector (31) is connected to the female connection terminal (1 ) And a male connection terminal (11) may be incorporated on the other side.

図6と図7において、雌型接続端子(1)は、雄型接続端子(11)のシャフト(12)を挿入するシャフト挿入筒状部(2)と、鍔部(9a)を有する取付基部(9)とによって構成されている。   6 and 7, the female connection terminal (1) includes a shaft insertion cylindrical portion (2) into which the shaft (12) of the male connection terminal (11) is inserted, and a mounting base portion having a flange portion (9a). (9).

雌型接続端子(1)のシャフト挿入筒状部(2)の先端開孔部の内側に、孔奥部に向かって漸次先細となるテーパー状案内壁部(3)と、テーパー状案内壁部(3)の径小内端部に連なりかつ雄型接続端子シャフト(12)の外径と同じかまたは若干小さい内径を有するシャフト接触用環状壁部(4)とが設けられ、このシャフト接触用環状壁部(4)より奥のシャフト挿入用筒状部(2)の内側部分は、径大の内部拡大孔となされている。   A tapered guide wall portion (3) that gradually tapers toward the back of the hole inside the tip opening portion of the shaft insertion cylindrical portion (2) of the female connection terminal (1), and a tapered guide wall portion An annular wall portion (4) for shaft contact, which is connected to the inner end portion (3) with a small diameter and has an inner diameter that is the same as or slightly smaller than the outer diameter of the male connection terminal shaft (12), is provided. The inner part of the cylindrical portion for shaft insertion (2) behind the annular wall portion (4) is a large-diameter internal enlarged hole.

雌型接続端子(1)のシャフト挿入用筒状部(2)の周壁に、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を横断する3つのスリット(5)がシャフト挿入用筒状部(2)の長手方向に設けられて、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を含むシャフト挿入用筒状部(2)が3個に分断せしめられ、またシャフト接触用環状壁部(4)より奥の径大の内部拡大孔を有するシャフト挿入用筒状部(2)の周壁には、3つのスリット(5)にそれぞれ連なる3つの長円形の長孔(8)がシャフト挿入用筒状部(2)の長手方向に設けられている。   Three slits (5) crossing the tapered guide wall portion (3) and the shaft contact annular wall portion (4) are provided on the peripheral wall of the shaft insertion tubular portion (2) of the female connection terminal (1). The cylindrical portion for shaft insertion (2) provided in the longitudinal direction of the cylindrical portion for insertion (2) and including the tapered guide wall portion (3) and the annular wall portion for shaft contact (4) is divided into three parts. The peripheral wall of the cylindrical portion for shaft insertion (2) having a large diameter inner enlarged hole deeper than the annular wall portion for contact with the shaft (4) has three lengths respectively connected to the three slits (5). A circular long hole (8) is provided in the longitudinal direction of the cylindrical portion for shaft insertion (2).

そして、本発明による雌型接続端子(1)においては、シャフト挿入用筒状部(2)の分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の周方向両端のスリット(5)寄り部分に、それぞれ雄型接続端子シャフト(12)の外面に接触しない非接触凹面状壁部(7)が設けられているものである。   In the female connection terminal (1) according to the present invention, the circumference of the arc-shaped inner wall portion (6) of the transverse section of each shaft contact dividing wall portion (4a) of the shaft insertion tubular portion (2) is divided. Non-contact concave wall portions (7) that are not in contact with the outer surface of the male connection terminal shaft (12) are provided in the portions near the slit (5) at both ends in the direction.

このような本発明の雌型接続端子(1)によれば、雌型接続端子(1)に対する雄型接続端子(11)の差し込み・抜き取りの際に両端子(1)(11)の接触部分は、雌型接続端子(1)側のシャフト挿入用筒状部(2)の分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の内面と、雄型接続端子(11)のシャフト(12)の表面だけであり、接触部分が非常に少なく、かつこれらの接触部分が曲面同士の接触(面接触)であるために、雌型接続端子(1)および雄型接続端子(11)の接続による摩擦・擦れなどが少なく、両端子(1)(11)の銀メッキの剥がれが非常に少なくてすみ、雌型接続端子(1)および雄型接続端子(11)同士の電気的接続の安定性を向上させることができるものである。   According to such a female connection terminal (1) of the present invention, when the male connection terminal (11) is inserted into and removed from the female connection terminal (1), the contact portions of both terminals (1) and (11) Are the inner surface of the arcuate inner wall portion (6) of the cross section of each shaft contact dividing wall portion (4a) of the shaft insertion cylindrical portion (2) on the female connection terminal (1) side, and the male type Since only the surface of the shaft (12) of the connection terminal (11) has very few contact portions and these contact portions are contact between curved surfaces (surface contact), the female connection terminal (1) and There is little friction and rubbing due to the connection of the male connection terminal (11), and the silver plating of both terminals (1) and (11) can be removed very little. The female connection terminal (1) and the male connection terminal ( 11) The stability of electrical connection between each other can be improved.

つぎに、本発明の電気自動車用充電コネクタに組み込まれる雌型接続端子(1)の製造方法を、詳しく説明する。  Next, a method of manufacturing the female connection terminal (1) incorporated in the electric vehicle charging connector of the present invention will be described in detail.

図8〜図12は、本発明の方法により充電コネクタの雌型接続端子(1)を製造する工程を順に示すものである。  FIGS. 8-12 shows the process of manufacturing the female connection terminal (1) of a charging connector in order by the method of this invention.

雌型接続端子(1)は、上記のように、雄型接続端子(11)のシャフト(12)を挿入する雌型接続端子(1)のシャフト挿入筒状部(2)の先端開孔部の内側に、孔奥部に向かって漸次先細となるテーパー状案内壁部(3)と、テーパー状案内壁部(3)の径小内端部に連なりかつ雄型接続端子シャフト(12)の外径と同じかまたは若干小さい内径を有するシャフト接触用環状壁部(4)とが設けられ、シャフト挿入用筒状部(2)の周壁に、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を横断する複数のスリット(5)がシャフト挿入用筒状部(2)の長手方向に設けられて、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を含むシャフト挿入用筒状部(2)が複数個に分断せしめられている。  The female connection terminal (1) is, as described above, the open end of the shaft insertion tubular portion (2) of the female connection terminal (1) into which the shaft (12) of the male connection terminal (11) is inserted. The tapered guide wall portion (3), which gradually tapers toward the inner portion of the hole, and the inner end portion of the tapered guide wall portion (3) having a small diameter and the male connection terminal shaft (12). An annular wall portion for shaft contact (4) having an inner diameter that is the same as or slightly smaller than the outer diameter is provided, and a tapered guide wall portion (3) and a shaft contact portion are provided on the peripheral wall of the cylindrical portion for shaft insertion (2). A plurality of slits (5) crossing the annular wall portion (4) are provided in the longitudinal direction of the shaft insertion tubular portion (2), so that the tapered guide wall portion (3) and the shaft contact annular wall portion (4 ) Including a cylindrical portion for shaft insertion (2).

一方、切削加工用治具(15)には、雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に差し込むための嵌合凹部(16)が設けられ、この嵌合凹部(16)の底部中央に、雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に差し込んで、該先端開孔部を押し開くためのテーパー状壁部(17)が設けられ、このテーパー状壁部(17)の内側に、切削ドリル(14)を挿通するための貫通孔(18)が設けられている。  On the other hand, the cutting jig (15) is provided with a fitting recess (16) for insertion into the tip opening of the shaft insertion tubular portion (2) of the female connection terminal (1). Tapered wall for inserting into the tip opening portion of the cylindrical portion (2) for inserting the shaft of the female connection terminal (1) in the center of the bottom of the fitting recess (16) to push open the tip opening portion. A portion (17) is provided, and a through hole (18) for inserting the cutting drill (14) is provided inside the tapered wall portion (17).

そして、まず、図8に示すように、切削加工用治具(15)に対して雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部を対向させて、いわゆる芯出し工程を実施する。  First, as shown in FIG. 8, the tip opening portion of the cylindrical portion (2) for inserting the shaft of the female connection terminal (1) is opposed to the jig (15) for cutting, so-called. Perform the centering process.

つぎに、図9に示すように、雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に、切削加工用治具(15)を嵌め被せて、治具(15)のテーパー状壁部(17)をシャフト挿入用筒状部(2)の先端開孔部に差し込むことにより、先端開孔部を外側に押し開き、該シャフト挿入用筒状部(2)の複数のスリット(5)により分断された各テーパー状分断案内壁部(3a)およびこれに連なるシャフト接触用分断壁部(4a)を拡開する。  Next, as shown in FIG. 9, a cutting jig (15) is fitted over the tip opening portion of the tubular portion for shaft insertion (2) of the female connection terminal (1), and the jig ( By inserting the tapered wall portion (17) of 15) into the tip opening portion of the shaft insertion tubular portion (2), the tip opening portion is pushed open to the outside, and the shaft insertion tubular portion (2). Each tapered dividing guide wall portion (3a) divided by the plurality of slits (5) and the shaft contacting dividing wall portion (4a) connected thereto are expanded.

さらに、図10に示すように、この拡開状態において治具(15)の貫通孔に切削ドリル(14)の刃先を挿入して、分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の周方向両端のスリット(5)寄り部分を切削することにより、雄型接続端子シャフト(12)の外面に接触しない非接触凹面状壁部(7)をそれぞれ形成するものである。  Further, as shown in FIG. 10, in this expanded state, the cutting edge of the cutting drill (14) is inserted into the through hole of the jig (15), and the divided shaft contact dividing walls (4a) are crossed. The non-contact concave wall portions (7) that do not contact the outer surface of the male connection terminal shaft (12) are formed by cutting the portions near the slits (5) at both ends in the circumferential direction of the surface arcuate inner wall portion (6). To do.

なお、この切削加工の際には、雌型接続端子(1)のシャフト挿入用筒状部(2)側を回転させてもよいし、治具(15)の貫通孔に挿入した切削ドリル(14)側を回転させてもよい。   In this cutting process, the cylindrical connecting part (2) side of the female connection terminal (1) may be rotated, or a cutting drill inserted into the through hole of the jig (15) ( 14) The side may be rotated.

切削工程後は、図11に示すように、切削ドリル(14)を治具(15)側に取り出し、さらに、図12に示すように、切削加工済みの雌型接続端子(1)を治具(15)より離脱させるものである。  After the cutting process, as shown in FIG. 11, the cutting drill (14) is taken out to the jig (15) side, and further, the cut female connection terminal (1) is attached to the jig as shown in FIG. (15) It is made to detach from.

本発明の電気自動車用充電コネクタに組み込まれる雌型接続端子(1)の製造方法によれば、雌型接続端子(1)を、非常に生産性よく、高精度をもって、かつ安価に提供することができ、しかも雌型接続端子(1)および雄型接続端子(11)の接続による摩擦・擦れなどが少なく、銀メッキの剥がれが非常に少なくてすみ、かつ両端子(1)(11)同士の電気的接続の安定性を向上させることができるものである。さらには、雌型接続端子(1)を組み込んだ充電コネクタを用いる電気自動車およびハイブリッド車の製造コストを低減することができる。  According to the method of manufacturing the female connection terminal (1) incorporated in the electric vehicle charging connector of the present invention, the female connection terminal (1) is provided with high productivity, high accuracy, and low cost. In addition, the friction between the female connection terminal (1) and the male connection terminal (11) can be reduced, the silver plating can be removed very little, and both terminals (1) and (11) can be connected to each other. The stability of the electrical connection can be improved. Furthermore, the manufacturing cost of the electric vehicle and the hybrid vehicle using the charging connector incorporating the female connection terminal (1) can be reduced.

1:雌型接続端子
2:シャフト挿入用筒状部
3:テーパー状案内壁部
4:シャフト接触用環状壁部
4a:シャフト接触用分断壁部
5:スリット
6:横断面円弧状内壁部
7:非接触凹面状壁部
8:長孔
11:雄型接続端子
12:シャフト
14:ドリル
15:切削加工用治具
16:嵌合凹部
17:テーパー状壁部
18:ドリル挿通用貫通孔
20:外部充電用電源
21:外部交流電源側充電コネクタ
27:電気自動車
30:車両側充電口
31:車両側充電コネクタ
1: Female connection terminal 2: Tubular portion for shaft insertion 3: Tapered guide wall portion 4: Annular wall portion for shaft contact 4a: Dividing wall portion for shaft contact 5: Slit 6: Arc-shaped inner wall portion 7: Non-contact concave wall portion 8: long hole 11: male connection terminal 12: shaft 14: drill 15: cutting jig 16: fitting recess 17: tapered wall portion 18: drill insertion through hole 20: external Charging power supply 21: External AC power supply side charging connector 27: Electric vehicle 30: Vehicle side charging port 31: Vehicle side charging connector

Claims (1)

電気自動車用充電コネクタに組み込まれる雌型接続端子(1)の製造方法であって、雄型接続端子(11)のシャフト(12)を挿入する雌型接続端子(1)のシャフト挿入筒状部(2)の先端開孔部の内側に、孔奥部に向かって漸次先細となるテーパー状案内壁部(3)と、テーパー状案内壁部(3)の径小内端部に連なりかつ雄型接続端子シャフト(12)の外径と同じかまたは若干小さい内径を有するシャフト接触用環状壁部(4)とが設けられ、シャフト挿入用筒状部(2)の周壁に、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を横断する複数のスリット(5)がシャフト挿入用筒状部(2)の長手方向に設けられて、テーパー状案内壁部(3)およびシャフト接触用環状壁部(4)を含むシャフト挿入用筒状部(2)が複数個に分断せしめられており、一方、この雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に差し込んで、該先端開孔部を押し開くためのテーパー状壁部(17)と、このテーパー状壁部(17)の内側の切削ドリル(14)を挿通するための貫通孔(18)とを有する切削加工用治具(15)を用意しておき、雌型接続端子(1)のシャフト挿入用筒状部(2)の先端開孔部に、切削加工用治具(15)を嵌め被せて、治具(15)のテーパー状壁部(17)をシャフト挿入用筒状部(2)の先端開孔部に差し込むことにより、先端開孔部を外側に押し開き、該シャフト挿入用筒状部(2)の複数のスリット(5)により分断された各テーパー状分断案内壁部(3a)およびこれに連なるシャフト接触用分断壁部(4a)を拡開し、この拡開状態において治具(15)の貫通孔に切削ドリル(14)の刃先を挿入して、分断された各シャフト接触用分断壁部(4a)の横断面円弧状内壁部(6)の周方向両端のスリット(5)寄り部分を切削することにより、雄型接続端子シャフト(12)の外面に接触しない非接触凹面状壁部(7)をそれぞれ形成することを特徴とする、電気自動車用充電コネクタの雌型接続端子の製造方法。

A method for manufacturing a female connection terminal (1) to be incorporated into a charging connector for an electric vehicle, wherein the shaft insertion cylindrical portion of the female connection terminal (1) is inserted into the shaft (12) of the male connection terminal (11). A tapered guide wall portion (3) that gradually tapers toward the back of the hole, and a small diameter inner end portion of the tapered guide wall portion (3) inside the tip opening portion of (2) and male. A shaft contact annular wall portion (4) having an inner diameter that is the same as or slightly smaller than the outer diameter of the die connection terminal shaft (12), and a tapered guide wall on the peripheral wall of the shaft insertion tubular portion (2) A plurality of slits (5) crossing the portion (3) and the shaft contact annular wall (4) are provided in the longitudinal direction of the shaft insertion tubular portion (2), and the tapered guide wall (3) and Cylindrical for shaft insertion including annular wall for shaft contact (4) (2) is divided into a plurality of pieces, and on the other hand, it is inserted into the tip opening portion of the cylindrical portion (2) for inserting the shaft of the female connection terminal (1), and the tip opening portion is pushed open. A cutting jig (15) having a tapered wall portion (17) for insertion and a through hole (18) for inserting a cutting drill (14) inside the tapered wall portion (17) is prepared. The cutting jig (15) is fitted over the tip opening of the shaft insertion tube (2) of the female connection terminal (1), and the tapered wall of the jig (15) is placed. By inserting the portion (17) into the tip opening portion of the shaft insertion tubular portion (2), the tip opening portion is pushed outward, and a plurality of slits (5 ) Each of the tapered dividing guide walls (3a) and the shaft contacting dividing wall connected thereto. (4a) is expanded, and in this expanded state, the cutting edge of the cutting drill (14) is inserted into the through hole of the jig (15), and the cross section of each divided shaft contact dividing wall (4a) Non-contact concave wall portions (7) that do not contact the outer surface of the male connection terminal shaft (12) are formed by cutting the portions near the slits (5) at both ends in the circumferential direction of the arc-shaped inner wall portion (6). A method for manufacturing a female connection terminal of a charging connector for an electric vehicle, characterized in that:

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Cited By (1)

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JP2019515428A (en) * 2016-04-22 2019-06-06 フェニックス コンタクト イー−モビリティ ゲーエムベーハーPHOENIX CONTACT E−Mobility GmbH Output contact with exchangeable contact area

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JP2015035287A (en) * 2013-08-08 2015-02-19 株式会社オートネットワーク技術研究所 Terminal pair and process of manufacturing the same
JP2016066440A (en) * 2014-09-24 2016-04-28 株式会社オートネットワーク技術研究所 Female terminal and connector
JP7088216B2 (en) * 2020-01-10 2022-06-21 トヨタ自動車株式会社 Reference jig

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JP2967507B2 (en) * 1995-08-16 1999-10-25 日本航空電子工業株式会社 Female contacts for electrical sockets
JP2010166756A (en) * 2009-01-19 2010-07-29 Toyota Motor Corp Charging port of electric vehicle
JP5556998B2 (en) * 2010-02-19 2014-07-23 住友電装株式会社 Female terminal

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Publication number Priority date Publication date Assignee Title
JP2019515428A (en) * 2016-04-22 2019-06-06 フェニックス コンタクト イー−モビリティ ゲーエムベーハーPHOENIX CONTACT E−Mobility GmbH Output contact with exchangeable contact area
US10717368B2 (en) 2016-04-22 2020-07-21 Phoenix Contact E-Mobility Gmbh Power contact having exchangeable contact region

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