WO2019082816A1 - Female terminal - Google Patents

Female terminal

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Publication number
WO2019082816A1
WO2019082816A1 PCT/JP2018/039038 JP2018039038W WO2019082816A1 WO 2019082816 A1 WO2019082816 A1 WO 2019082816A1 JP 2018039038 W JP2018039038 W JP 2018039038W WO 2019082816 A1 WO2019082816 A1 WO 2019082816A1
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WO
WIPO (PCT)
Prior art keywords
spring
elastic contact
contact pieces
elastic
terminal
Prior art date
Application number
PCT/JP2018/039038
Other languages
French (fr)
Japanese (ja)
Inventor
基泰 安藤
Original Assignee
住友電装株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友電装株式会社 filed Critical 住友電装株式会社
Publication of WO2019082816A1 publication Critical patent/WO2019082816A1/en

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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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/18—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket

Definitions

  • the technology disclosed by the present specification relates to a female terminal.
  • the female terminal As an example of the conventional female terminal, the female terminal described in Japanese Patent Application Laid-Open No. 207-142986 (Patent Document 1 below) is known.
  • the female terminal includes a terminal body and a separate cover attached to the outer peripheral surface of the terminal body.
  • the terminal body is formed by pressing a plate made of copper alloy or the like, and includes a wire connection portion connected to a wire and a terminal connection portion connected to a male terminal.
  • the terminal body is generally plated.
  • the core wire of the wire is connected to the wire connection portion.
  • the cover is formed by pressing a plate made of a stainless steel plate or the like, and is mounted on the outer peripheral surface of the front end portion of the terminal connection portion.
  • Patent Document 1 Japanese Patent Application Publication No. 207-142986
  • the terminal disclosed in the specification includes a cylindrical base extending in the front-rear direction, a plurality of elastic contact pieces projecting forward from the front end of the base and provided so as to be elastically displaceable in the radial direction of the base; A spring capable of coming into contact with the plurality of elastic contact pieces from a direction in which the elastic displacement of the plurality of elastic contact pieces is prevented and capable of being elastically displaced in the direction of elastic displacement of the elastic contact pieces;
  • the elastic contact piece includes a region where plating is applied and a region where the base of the elastic contact piece is exposed, the elastic contact piece, the spring, and The position of the contact portion at which the contact is in the area where the base is exposed.
  • the entire female terminal is ultrasonically vibrated, and conventionally, the spring and the plating applied to the elastic contact piece are adhered by ultrasonic vibration.
  • the position of the contact portion where the elastic contact piece and the spring contact is in the area where the base of the elastic contact piece is exposed (in the area not plated). Therefore, the plating and the spring can be prevented from adhering due to ultrasonic vibration.
  • the spring is mounted so as to surround the outer peripheral surface of the plurality of elastic contact pieces, and the outer peripheral surface of the spring is provided with a plurality of pressing portions projecting inward in the radial direction, and the pressing portions are
  • the contact portion on the spring side may be configured.
  • the spring may be made of stainless steel. As a result, it is not necessary to plate the spring for rust prevention. Therefore, using stainless steel (SUS) as the material of the spring is suitable for the technology disclosed herein.
  • SUS stainless steel
  • the female terminal 10 is formed by processing a metal plate material made of copper alloy with a press or the like, and as shown in FIGS. 1 and 7, the terminal body 20 and the outer peripheral surface of the terminal body 20 are separately attached.
  • a body spring 40 is provided.
  • the fitting direction of the female terminal 10 will be described as the front.
  • the terminal body 20 has a wire connection portion 23 connected to the wire 50, a terminal connection portion 21 connected to a male terminal, and the terminal connection portion 21 and the wire connection portion 23 in the front-rear direction. It comprises and comprises the connection part 22 to connect.
  • the wire connection portion 23 has a plate-like connection surface 23A, and the core 51 of the wire 50 is connected to the connection surface 23A by ultrasonic connection. Thereby, the electric wire 50 and the female terminal 10 are electrically connected.
  • the terminal connection portion 21 has a generally cylindrical shape as a whole as shown in FIGS. 1 and 7, and is provided on a base portion 24 and a base portion 24 connected to the front of the wire connection portion 23 via a connecting portion 22.
  • a plurality of (three in the present embodiment) elastic contact pieces 25 are provided.
  • the base portion 24 is formed in a slightly long cylindrical shape in the front-rear direction in which the side end edges 24A of the metal plate members are butted by bending so as to round the metal plate members.
  • Each elastic contact piece 25 is formed in a cantilever shape slightly inclined toward the axial center of the terminal connection portion 21 toward the front which is the fitting direction with the male terminal from the front end edge of the base portion 24, It can be elastically displaced in the radial direction about a base end portion which is a root portion of the contact piece 25 as a supporting point.
  • each elastic contact piece 25 is formed in an arc shape in a front view centering on the axial center of the terminal connection portion 21, and the plurality of elastic contact pieces 25 in the terminal connection portion 21 are A pair of adjacent contact pieces 26 which are elastic contact pieces 25 disposed on both sides of the side edge 24A of the base 24; and an upper part where the side edge 24A of the base 24 is arranged bordering on the axial center of the terminal connection portion 21; Are constituted by a total of three elastic contact pieces 25 with non-adjacent contact pieces 27 which are elastic contact pieces 25 arranged at the lower part on the opposite side.
  • the terminal connection portion 21 on the front side of the base portion 24 is formed in a substantially cylindrical shape which is slightly tapered toward the front. Then, male terminals can be fitted from the front between the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27.
  • the inner diameter dimension of the front end opening constituted by the three elastic contact pieces 25 of the pair of adjacent contact pieces 26 and the non-adjacent contact piece 27 is that the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 are elastically displaced In the natural state, the diameter is set to be slightly smaller than the outer diameter of the male terminal. Then, when the male terminal is inserted between the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 and reaches a normal fitting state, the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 are male terminals As a result, the terminal connection portion 21 elastically contacts the male terminal by being elastically displaced radially outward by being pressed. Thereby, the male terminal and the female terminal 10 are electrically connected.
  • the terminal body 20 is plated with tin-nickel alloy.
  • the area S of the front outer peripheral surface of the elastic contact piece 25 (for example, the hatched portion in FIG. 1) is previously subjected to the masking process before the plating process, and is not subjected to the plating process. Accordingly, in the region S, the copper alloy which is the base of the elastic contact piece 25 is exposed.
  • the spring 40 is formed by processing a plate made of a stainless steel (SUS) plate which is a metal plate having a rigidity higher than that of the terminal main body 20 by a press or the like. Since the material of the spring 40 is SUS, the spring 40 need not be plated for rust prevention. As shown in FIG. 3, the spring 40 is provided on the outer peripheral surface of the biasing portion 41 mounted on the outer peripheral surface of the front end portion of the terminal connection portion 21 and the outer peripheral surface of the base end portion 27A of the nonadjacent contact piece 27 of the terminal connection portion 21. It comprises and comprises a fixed piece 42 to be mounted, and a plurality of connecting parts 43 connecting the biasing part 41 and the fixed piece 42.
  • SUS stainless steel
  • the biasing portion 41 has a substantially cylindrical shape with a C-shape in a front view opening upward, and is elastically displaceable so as to expand in diameter. Further, the biasing portion 41 is configured to be tapered along the tip outer peripheral surface of the terminal connection portion 21 so that the inner diameter dimension is slightly larger than the outer diameter dimension of the tip outer peripheral surface of the terminal connection portion 21. A plurality of pressing portions 44 contacting the outer peripheral surface of the terminal connection portion 21 are provided on the inner surface of the biasing portion 41.
  • the pressing portion 44 is provided so as to protrude at three locations on both sides of the upper end opening and the lower end portion of the upper end opening of the biasing portion 41.
  • the clearance between the tip outer peripheral surface and the inner peripheral surface of the biasing portion 41 is set to be substantially the same.
  • the pressing portion 44 is provided in the biasing portion 41 so as to surround the terminal connection portion 21 from three sides, and the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 of the terminal connection portion 21 are radially outward.
  • the three pressing portions 44 urge the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 from the radially outer side to the inner side in the direction that prevents the elastic displacement. .
  • the contact load to the male terminal of each elastic contact piece 25 is secured, and the connection reliability between the female terminal 10 and the male terminal is secured.
  • the position of the pressing portion 44 is in the non-plated area S.
  • the fixed piece 42 is provided at the rear of the biasing portion 41 via three connecting portions 43 extending rearward from three portions of the central portion at the rear end edge of the biasing portion 41 and the both ends thereof.
  • the fixed piece 42 covers the proximal end 27A of the non-adjacent contact piece 27 from the outside as shown in FIG. 3 and wraps the both side edges of the proximal end 27A of the non-adjacent contact piece 27 from both sides There is.
  • a pair of holding pieces 28 protruding outward in the circumferential direction is provided at substantially central portions in the front-rear direction at both side edges of the non-adjacent contact pieces 27.
  • the core wire 51 of the electric wire 50 When the core wire 51 of the electric wire 50 is placed on the connection surface 23A of the wire connection portion 23 and the connection surface 23A and the core wire 51 are applied to the ultrasonic vibration portion of the ultrasonic bonding apparatus, the core wire 51 and the connection surface 23A are ultrasonically vibrated It adheres. At this time, the entire female terminal 10 ultrasonically vibrates, and the pressing portion 44 of the spring 40 and the elastic contact piece 25 rub against each other by the ultrasonic vibration. However, since the position of the pressing portion 44 is in the non-plating region S of the elastic contact piece 25 and SUS, which is the material of the spring 40, is a material that is difficult to adhere, the pressing portion 44 of the spring 40 and the elastic contact piece 25 does not adhere.
  • the entire female terminal 10 is ultrasonically vibrated, and conventionally, the spring 40 and the elastic contact piece 25 are used.
  • the applied plating was adhered by ultrasonic vibration.
  • the position of the contact point where the elastic contact piece 25 and the spring 40 contact is in the area S where the base of the elastic contact piece 25 is exposed (the area not plated) Because it is inside, it is possible to prevent adhesion between the plating and the spring 40 due to ultrasonic vibration.
  • the pressing part 44 in the spring 40 by comprising in this way, the position of the contact part of the elastic contact piece 25 and the spring 40 becomes clear. Further, by clarifying the position of the contact portion, the region S where the base of the elastic contact piece 25 is exposed can be further limited.
  • the spring 40 does not have to be plated for rust prevention. Therefore, using stainless steel (SUS) as the material of the spring 40 is suitable for the female terminal 10 of the present embodiment.
  • SUS stainless steel
  • the resilient contact piece 25 is urged radially inward from the outer side in the radial direction by the three pressing portions 44 of the spring 40, but the biasing portion of the spring is the inner side of the resilient contact piece.
  • the resilient contact piece may be biased from the radially inner side to the outer side by a pressing portion disposed in the biasing portion and projecting radially outward.
  • the terminal connection portion of the mating terminal has a cylindrical shape that covers the elastic contact piece 25 at the time of fitting, and the pressing portion of the elastic contact piece presses the inner surface of the cylindrical terminal connection portion.
  • the number of elastic contact pieces 25 is three in the above embodiment, the number of elastic contact pieces may be two or four or more.
  • the area S on the front outer peripheral surface of the elastic contact piece 25 is not plated, only the peripheral portion of the pressing portion 44 on the elastic contact piece 25 is plated in a spot manner Alternatively, the entire outer surface of the elastic contact piece 25 may not be plated.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

The female terminal 10 disclosed in the present specification is provided with: a cylindrical base part 24 extending in the longitudinal direction; a plurality of elastic contact pieces 25 projecting forwards from the front end of the base part 24, the elastic contact pieces 25 provided so as to be capable of elastically displacing in the radial direction of the base part 24; a spring 40 in contact with the plurality of elastic contact pieces 25 from the direction of blocking the elastic deformation of the plurality of elastic contact pieces 25, the spring 40 being capable of elastically displacing in the direction of elastic displacement of the elastic contact pieces 25; and a plating applied to the plurality of elastic contact pieces 25. The elastic contact pieces 25 have a region in which plating is applied and a region S in which the substrate of the elastic contact pieces 25 is exposed. The position of a contact part at which the elastic contact pieces 25 and the spring 40 are in contact is within the region S in which the substrate is exposed.

Description

雌端子Female terminal
　本明細書によって開示される技術は、雌端子に関する。 The technology disclosed by the present specification relates to a female terminal.
　従来の雌端子の一例として、特開２０１７－１４２９８６号公報（下記特許文献１）に記載の雌端子が知られている。この雌端子は、端子本体と、端子本体の外周面に装着される別体のカバーと、を備えて構成されている。 As an example of the conventional female terminal, the female terminal described in Japanese Patent Application Laid-Open No. 207-142986 (Patent Document 1 below) is known. The female terminal includes a terminal body and a separate cover attached to the outer peripheral surface of the terminal body.
　端子本体は、銅合金などからなる板材をプレス加工することによって形成されており、電線に接続される電線接続部と、雄端子と接続される端子接続部と、を備えている。端子本体には、一般的にメッキが施される。電線接続部には、電線の芯線が、接続される。カバーは、ステンレス鋼板などからなる板材をプレス加工することによって形成されており、端子接続部における前端部の外周面に装着される。 The terminal body is formed by pressing a plate made of copper alloy or the like, and includes a wire connection portion connected to a wire and a terminal connection portion connected to a male terminal. The terminal body is generally plated. The core wire of the wire is connected to the wire connection portion. The cover is formed by pressing a plate made of a stainless steel plate or the like, and is mounted on the outer peripheral surface of the front end portion of the terminal connection portion.
特開２０１７－１４２９８６号公報Patent Document 1: Japanese Patent Application Publication No. 207-142986
　しかしながら、電線接続部と電線の芯線との接続を、超音波接続により接続する場合、接続時に雌端子全体が超音波振動をすることから、端子接続部とカバーとの接点において、端子接続部に施されたメッキとカバーとが凝着するという問題がある。 However, when the connection between the wire connection portion and the core wire of the wire is connected by ultrasonic connection, the entire female terminal is subjected to ultrasonic vibration at the time of connection, so the contact point between the terminal connection portion and the cover There is a problem that the applied plating adheres to the cover.
　また、端子本体に油分を付着させることで、カバーと端子接続部とが超音波接続により凝着されることを防止できるものの、油分が減少すると凝着されてしまうため、安定して超音波接続による凝着の防止ができないという問題がある。 Also, by adhering oil to the terminal body, it is possible to prevent adhesion between the cover and the terminal connection portion by ultrasonic connection, but since the oil will be condensed if it is reduced, ultrasonic connection is stable. There is a problem that it is not possible to prevent adhesion due to
　本明細書で開示される端子は、前後方向に延びる筒状の基部と、前記基部の前端から前方に突出し、前記基部の径方向に弾性変位可能に設けられた複数の弾性接触片と、前記複数の弾性接触片の弾性変位を阻止する方向から、前記複数の弾性接触片に接触し、且つ、前記弾性接触片の弾性変位する方向に弾性変位可能なスプリングと、前記複数の弾性接触片に施されるメッキと、を備え、前記弾性接触片には、メッキが施されている領域と、前記弾性接触片の下地が露出している領域とがあり、前記弾性接触片と、前記スプリングとが接触する接点部の位置は、前記下地が露出している領域内となっている。
　雌端子に電線を超音波接続により接続する際、雌端子全体が超音波振動することとなり、従来は、スプリングと、弾性接触片に施されたメッキとが超音波振動により凝着していた。しかし、上記のように構成することで、弾性接触片とスプリングとが接触する接点部の位置は、弾性接触片の下地が露出している領域内（メッキが施されていない領域内）にあるため、メッキとスプリングとが超音波振動により凝着することを防止できる。 The terminal disclosed in the specification includes a cylindrical base extending in the front-rear direction, a plurality of elastic contact pieces projecting forward from the front end of the base and provided so as to be elastically displaceable in the radial direction of the base; A spring capable of coming into contact with the plurality of elastic contact pieces from a direction in which the elastic displacement of the plurality of elastic contact pieces is prevented and capable of being elastically displaced in the direction of elastic displacement of the elastic contact pieces; The elastic contact piece includes a region where plating is applied and a region where the base of the elastic contact piece is exposed, the elastic contact piece, the spring, and The position of the contact portion at which the contact is in the area where the base is exposed.
When the electric wire is connected to the female terminal by ultrasonic connection, the entire female terminal is ultrasonically vibrated, and conventionally, the spring and the plating applied to the elastic contact piece are adhered by ultrasonic vibration. However, by configuring as described above, the position of the contact portion where the elastic contact piece and the spring contact is in the area where the base of the elastic contact piece is exposed (in the area not plated). Therefore, the plating and the spring can be prevented from adhering due to ultrasonic vibration.
　また、前記スプリングは、前記複数の弾性接触片の外周面を囲うように装着され、前記スプリングの外周面には、径方向内側に向かって突出する複数の押圧部が設けられ、前記押圧部は、前記スプリング側の前記接点部である構成としても良い。
　このように構成することで、スプリングに押圧部を設けることで、弾性接触片とスプリングとの接点部の位置が明確となる。また、接点部の位置が明確になることにより、弾性接触片の下地が露出している領域をより限定することができる。 The spring is mounted so as to surround the outer peripheral surface of the plurality of elastic contact pieces, and the outer peripheral surface of the spring is provided with a plurality of pressing portions projecting inward in the radial direction, and the pressing portions are The contact portion on the spring side may be configured.
With this configuration, by providing the pressing portion on the spring, the position of the contact portion between the elastic contact piece and the spring becomes clear. Further, by clarifying the position of the contact portion, it is possible to further limit the area where the base of the elastic contact piece is exposed.
　また、前記スプリングはステンレス鋼から構成されていることとしても良い。
　これにより、スプリングに錆防止のためのメッキ処理を施す必要がなくなる。したがって、スプリングの材質としてステンレス鋼（ＳＵＳ）を用いることは、本明細書で開示される技術にとって好適である。 The spring may be made of stainless steel.
As a result, it is not necessary to plate the spring for rust prevention. Therefore, using stainless steel (SUS) as the material of the spring is suitable for the technology disclosed herein.
　本明細書に開示される雌端子によれば、電線を端子接続部に超音波接続で接続する際、弾性接触片とスプリングとが凝着することを回避できる。 According to the female terminal disclosed in the present specification, when the electric wire is connected to the terminal connection by ultrasonic connection, adhesion of the elastic contact piece and the spring can be avoided.
本実施形態の雌端子の斜視図The perspective view of the female terminal of this embodiment 雌端子の平面図Top view of female terminal 雌端子の側面図Side view of female terminal 雌端子の背面図Rear view of female terminal 図４のＡ－Ａ断面図AA cross section of FIG. 4 図４のＢ－Ｂ断面図BB sectional view of FIG. 4 スプリングを取り外した状態における雌端子の斜視図A perspective view of the female terminal with the spring removed スプリングを取り外した状態における雌端子の平面図Top view of female terminal with spring removed スプリングを取り外した状態における雌端子の側面図Side view of the female terminal with the spring removed スプリングを取り外した状態における雌端子の背面図Rear view of female terminal with spring removed
　＜実施形態＞
　図１から図１０を参照して本実施形態を説明する。
　雌端子１０は、銅合金からなる金属板材をプレスなどで加工することによって形成されており、図１、図７に示すように、端子本体２０と、端子本体２０の外周面に装着される別体のスプリング４０とを備えて構成されている。以降の説明では、雌端子１０の嵌合方向を前方として説明する。 Embodiment
The present embodiment will be described with reference to FIGS.
The female terminal 10 is formed by processing a metal plate material made of copper alloy with a press or the like, and as shown in FIGS. 1 and 7, the terminal body 20 and the outer peripheral surface of the terminal body 20 are separately attached. A body spring 40 is provided. In the following description, the fitting direction of the female terminal 10 will be described as the front.
　端子本体２０は、図１に示すように、電線５０に接続される電線接続部２３と、雄端子と接続される端子接続部２１と、端子接続部２１と電線接続部２３とを前後方向に繋ぐ繋ぎ部２２とを備えて構成されている。 As shown in FIG. 1, the terminal body 20 has a wire connection portion 23 connected to the wire 50, a terminal connection portion 21 connected to a male terminal, and the terminal connection portion 21 and the wire connection portion 23 in the front-rear direction. It comprises and comprises the connection part 22 to connect.
　電線接続部２３は、図１に示すように、板状をなす接続面２３Ａを有しており、接続面２３Ａには、電線５０の芯線５１が、超音波接続により接続されている。これにより、電線５０と雌端子１０とが電気的に接続されるようになっている。 As shown in FIG. 1, the wire connection portion 23 has a plate-like connection surface 23A, and the core 51 of the wire 50 is connected to the connection surface 23A by ultrasonic connection. Thereby, the electric wire 50 and the female terminal 10 are electrically connected.
　端子接続部２１は、図１、図７に示すように、全体としては略円筒状をなしており、電線接続部２３の前方に繋ぎ部２２を介して連なる基部２４と、基部２４に設けられた複数（本実施形態では、３つ）の弾性接触片２５とを備えて構成されている。 The terminal connection portion 21 has a generally cylindrical shape as a whole as shown in FIGS. 1 and 7, and is provided on a base portion 24 and a base portion 24 connected to the front of the wire connection portion 23 via a connecting portion 22. A plurality of (three in the present embodiment) elastic contact pieces 25 are provided.
　基部２４は、金属板材を丸めるように曲げ加工を施すことで、金属板材の側端縁２４Ａ同士を突き合わせた前後方向にやや長い円筒状に形成されている。 The base portion 24 is formed in a slightly long cylindrical shape in the front-rear direction in which the side end edges 24A of the metal plate members are butted by bending so as to round the metal plate members.
　各弾性接触片２５は、基部２４の前端縁から雄端子との嵌合方向である前方に向かうほど端子接続部２１の軸心に向けて僅かに傾斜する片持ち状に形成されており、弾性接触片２５の付け根部分である基端部を支点に径方向に弾性変位可能とされている。 Each elastic contact piece 25 is formed in a cantilever shape slightly inclined toward the axial center of the terminal connection portion 21 toward the front which is the fitting direction with the male terminal from the front end edge of the base portion 24, It can be elastically displaced in the radial direction about a base end portion which is a root portion of the contact piece 25 as a supporting point.
　また、各弾性接触片２５は、図５に示すように、端子接続部２１の軸心を中心とする正面視円弧状に形成されており、端子接続部２１における複数の弾性接触片２５は、基部２４の側端縁２４Ａの両側に配された弾性接触片２５である一対の隣接接触片２６と、端子接続部２１の軸心を境に基部２４の側端縁２４Ａが配された上部とは反対側の下部に配された弾性接触片２５である非隣接接触片２７との合計３つの弾性接触片２５によって構成されている。 Further, as shown in FIG. 5, each elastic contact piece 25 is formed in an arc shape in a front view centering on the axial center of the terminal connection portion 21, and the plurality of elastic contact pieces 25 in the terminal connection portion 21 are A pair of adjacent contact pieces 26 which are elastic contact pieces 25 disposed on both sides of the side edge 24A of the base 24; and an upper part where the side edge 24A of the base 24 is arranged bordering on the axial center of the terminal connection portion 21; Are constituted by a total of three elastic contact pieces 25 with non-adjacent contact pieces 27 which are elastic contact pieces 25 arranged at the lower part on the opposite side.
　したがって、基部２４よりも前側の端子接続部２１は、図１、図７に示すように、前方に向かうほど僅かに先細りとなる略円筒状に構成されている。そして、一対の隣接接触片２６と非隣接接触片２７との間には、雄端子が前方から嵌合可能とされている。 Therefore, as shown in FIGS. 1 and 7, the terminal connection portion 21 on the front side of the base portion 24 is formed in a substantially cylindrical shape which is slightly tapered toward the front. Then, male terminals can be fitted from the front between the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27.
　また、一対の隣接接触片２６と非隣接接触片２７との３つの弾性接触片２５によって構成される前端開口の内径寸法は、一対の隣接接触片２６と非隣接接触片２７とが弾性変位していない自然状態では、雄端子の外径寸法よりも僅かに小さく設定されている。そして、雄端子が一対の隣接接触片２６と非隣接接触片２７との間に挿入されて正規の嵌合状態に至ると、一対の隣接接触片２６と非隣接接触片２７とが、雄端子によって押圧されることで径方向外側に向けて弾性変位し、端子接続部２１が雄端子に弾性的に接触する。これにより、雄端子と雌端子１０とが電気的に接続されるようになっている。 Further, the inner diameter dimension of the front end opening constituted by the three elastic contact pieces 25 of the pair of adjacent contact pieces 26 and the non-adjacent contact piece 27 is that the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 are elastically displaced In the natural state, the diameter is set to be slightly smaller than the outer diameter of the male terminal. Then, when the male terminal is inserted between the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 and reaches a normal fitting state, the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 are male terminals As a result, the terminal connection portion 21 elastically contacts the male terminal by being elastically displaced radially outward by being pressed. Thereby, the male terminal and the female terminal 10 are electrically connected.
　端子本体２０には、錫ニッケル合金メッキ処理が施されている。但し、弾性接触片２５の前方外周面の領域Ｓ（例えば図１の網掛け部）には、メッキ処理前に予めマスキング処理が施されており、メッキ処理が施されていない。したがって、領域Ｓには、弾性接触片２５の下地である銅合金が露出している。 The terminal body 20 is plated with tin-nickel alloy. However, the area S of the front outer peripheral surface of the elastic contact piece 25 (for example, the hatched portion in FIG. 1) is previously subjected to the masking process before the plating process, and is not subjected to the plating process. Accordingly, in the region S, the copper alloy which is the base of the elastic contact piece 25 is exposed.
　スプリング４０は、端子本体２０よりも剛性が高い金属板材であるステンレス鋼（ＳＵＳ）板からなる板材をプレスなどによって加工することによって形成されている。スプリング４０の材質はＳＵＳであるため、スプリング４０には、錆防止用のメッキ処理を施す必要はない。スプリング４０は、図３に示すように、端子接続部２１における前端部の外周面に装着される付勢部４１と、端子接続部２１の非隣接接触片２７における基端部２７Ａの外周面に装着される固定片４２と、付勢部４１と固定片４２との間を繋ぐ複数の連結部４３とを備えて構成されている。 The spring 40 is formed by processing a plate made of a stainless steel (SUS) plate which is a metal plate having a rigidity higher than that of the terminal main body 20 by a press or the like. Since the material of the spring 40 is SUS, the spring 40 need not be plated for rust prevention. As shown in FIG. 3, the spring 40 is provided on the outer peripheral surface of the biasing portion 41 mounted on the outer peripheral surface of the front end portion of the terminal connection portion 21 and the outer peripheral surface of the base end portion 27A of the nonadjacent contact piece 27 of the terminal connection portion 21. It comprises and comprises a fixed piece 42 to be mounted, and a plurality of connecting parts 43 connecting the biasing part 41 and the fixed piece 42.
　付勢部４１は、図５に示すように、上方に開口する正面視Ｃ字状の略円筒状をなしており、拡径するように弾性変位可能とされている。また、付勢部４１は、その内径寸法が、端子接続部２１の先端外周面の外径寸法よりも僅かに大きくなるように、端子接続部２１の先端外周面に沿った先細り状に構成されており、付勢部４１の内面には、端子接続部２１の外周面に接触する複数の押圧部４４が設けられている。 As shown in FIG. 5, the biasing portion 41 has a substantially cylindrical shape with a C-shape in a front view opening upward, and is elastically displaceable so as to expand in diameter. Further, the biasing portion 41 is configured to be tapered along the tip outer peripheral surface of the terminal connection portion 21 so that the inner diameter dimension is slightly larger than the outer diameter dimension of the tip outer peripheral surface of the terminal connection portion 21. A plurality of pressing portions 44 contacting the outer peripheral surface of the terminal connection portion 21 are provided on the inner surface of the biasing portion 41.
　押圧部４４は、図５に示すように、付勢部４１の上端開口の両側上端部と下端部との３箇所に突出して設けられており、押圧部４４の突出寸法は、端子接続部２１の先端外周面と付勢部４１の内周面と間の隙間とほぼ同じに設定されている。 As shown in FIG. 5, the pressing portion 44 is provided so as to protrude at three locations on both sides of the upper end opening and the lower end portion of the upper end opening of the biasing portion 41. The clearance between the tip outer peripheral surface and the inner peripheral surface of the biasing portion 41 is set to be substantially the same.
　したがって、押圧部４４は、端子接続部２１を三方から取り囲むように付勢部４１に設けられており、端子接続部２１の一対の隣接接触片２６と非隣接接触片２７とが径方向外側に向けて弾性変位する際に、これら３つの押圧部４４によって、一対の隣接接触片２６と非隣接接触片２７とを、弾性変位を阻止する方向である径方向外側から内側に向けて付勢する。これにより、各弾性接触片２５の雄端子に対する接触荷重が確保され、雌端子１０と雄端子との間の接続信頼性が確保されるようになっている。押圧部４４の位置は、非メッキの領域Ｓ内となっている。 Therefore, the pressing portion 44 is provided in the biasing portion 41 so as to surround the terminal connection portion 21 from three sides, and the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 of the terminal connection portion 21 are radially outward. When elastically displaced, the three pressing portions 44 urge the pair of adjacent contact pieces 26 and the non-adjacent contact pieces 27 from the radially outer side to the inner side in the direction that prevents the elastic displacement. . Thereby, the contact load to the male terminal of each elastic contact piece 25 is secured, and the connection reliability between the female terminal 10 and the male terminal is secured. The position of the pressing portion 44 is in the non-plated area S.
　固定片４２は、付勢部４１の後端縁における中央部およびその両端部の３箇所から後方に向けて延出する３つの連結部４３を介して付勢部４１の後方に設けられており、固定片４２は、図３に示すように、非隣接接触片２７の基端部２７Ａを外側から覆うと共に、非隣接接触片２７における基端部２７Ａの両側縁を両側から包み込む形態とされている。 The fixed piece 42 is provided at the rear of the biasing portion 41 via three connecting portions 43 extending rearward from three portions of the central portion at the rear end edge of the biasing portion 41 and the both ends thereof. The fixed piece 42 covers the proximal end 27A of the non-adjacent contact piece 27 from the outside as shown in FIG. 3 and wraps the both side edges of the proximal end 27A of the non-adjacent contact piece 27 from both sides There is.
　一方、非隣接接触片２７の両側縁における前後方向略中央部には、図３に示すように、周方向外側に向けて突出する一対の保持片２８が設けられており、この一対の保持片２８の直後にスプリング４０の固定片４２が配置されることで、端子接続部２１に対するスプリング４０の前方への抜け止めが図られている。 On the other hand, as shown in FIG. 3, a pair of holding pieces 28 protruding outward in the circumferential direction is provided at substantially central portions in the front-rear direction at both side edges of the non-adjacent contact pieces 27. By disposing the fixing piece 42 of the spring 40 immediately after 28, the spring 40 can be prevented from coming off with respect to the terminal connection portion 21.
　次に、本実施形態の作用について説明する。 Next, the operation of the present embodiment will be described.
　電線５０の芯線５１を、電線接続部２３の接続面２３Ａに置き、接続面２３Ａ及び芯線５１を超音波接合装置の超音波振動部に当てると、超音波振動により芯線５１と接続面２３Ａとは凝着される。この時、雌端子１０全体が超音波振動をし、スプリング４０の押圧部４４と弾性接触片２５とは、超音波振動により擦れ合うこととなる。しかし、押圧部４４の位置は、弾性接触片２５の非メッキの領域Ｓ内にあり、スプリング４０の材質であるＳＵＳは凝着し難い材質であるため、スプリング４０の押圧部４４と弾性接触片２５とは、凝着されることはない。 When the core wire 51 of the electric wire 50 is placed on the connection surface 23A of the wire connection portion 23 and the connection surface 23A and the core wire 51 are applied to the ultrasonic vibration portion of the ultrasonic bonding apparatus, the core wire 51 and the connection surface 23A are ultrasonically vibrated It adheres. At this time, the entire female terminal 10 ultrasonically vibrates, and the pressing portion 44 of the spring 40 and the elastic contact piece 25 rub against each other by the ultrasonic vibration. However, since the position of the pressing portion 44 is in the non-plating region S of the elastic contact piece 25 and SUS, which is the material of the spring 40, is a material that is difficult to adhere, the pressing portion 44 of the spring 40 and the elastic contact piece 25 does not adhere.
　以上のように本実施形態によれば、雌端子１０に電線５０を超音波接続により接続する際、雌端子１０全体が超音波振動することとなり、従来は、スプリング４０と、弾性接触片２５に施されたメッキとが超音波振動により凝着していた。しかし、上記のように構成することで、弾性接触片２５とスプリング４０とが接触する接点部の位置は、弾性接触片２５の下地が露出している領域Ｓ内（メッキが施されていない領域内）にあるため、メッキとスプリング４０とが超音波振動により凝着することを防止できる。 As described above, according to the present embodiment, when the electric wire 50 is connected to the female terminal 10 by ultrasonic connection, the entire female terminal 10 is ultrasonically vibrated, and conventionally, the spring 40 and the elastic contact piece 25 are used. The applied plating was adhered by ultrasonic vibration. However, by configuring as described above, the position of the contact point where the elastic contact piece 25 and the spring 40 contact is in the area S where the base of the elastic contact piece 25 is exposed (the area not plated) Because it is inside, it is possible to prevent adhesion between the plating and the spring 40 due to ultrasonic vibration.
　また、このように構成することで、スプリング４０に押圧部４４を設けることで、弾性接触片２５とスプリング４０との接点部の位置が明確となる。また、接点部の位置が明確になることにより、弾性接触片２５の下地が露出している領域Ｓをより限定することができる。 Moreover, by providing the pressing part 44 in the spring 40 by comprising in this way, the position of the contact part of the elastic contact piece 25 and the spring 40 becomes clear. Further, by clarifying the position of the contact portion, the region S where the base of the elastic contact piece 25 is exposed can be further limited.
　また、スプリング４０に錆防止のためのメッキ処理を施す必要がなくなる。したがって、スプリング４０の材質としてステンレス鋼（ＳＵＳ）を用いることは、本実施形態の雌端子１０にとっては好適である。 Further, the spring 40 does not have to be plated for rust prevention. Therefore, using stainless steel (SUS) as the material of the spring 40 is suitable for the female terminal 10 of the present embodiment.
　＜他の実施形態＞
　本明細書によって開示される技術は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような種々の態様も含まれる。
（１）上記実施形態では、スプリング４０の３つの押圧部４４によって、弾性接触片２５を径方向外側から内側に向けて付勢する構成としていたが、スプリングの付勢部を弾性接触片の内側に配し、付勢部に設けられた径方向外側に向けて突出する押圧部によって、弾性接触片を径方向内側から外側に向けて付勢する構成としても良い。この場合、相手側端子の端子接続部は、嵌合時に弾性接触片２５を覆う筒形状をなすこととし、弾性接触片の押圧部が、筒形状の端子接続部の内面を押圧することで、相手側端子と接続する構成とする。
（２）上記実施形態では、弾性接触片２５の数は３つとしたが、弾性接触片の数は２つ、又は、４つ以上の構成としても良い。
（３）上記実施形態では、弾性接触片２５の前方外周面の領域Ｓにメッキ処理を施さない構成としたが、弾性接触片２５側の押圧部４４の周辺部のみスポット的にメッキ処理を施さない構成としても良いし、弾性接触片２５の外面全体にメッキ処理を施さない構成としても良い。 Other Embodiments
The art disclosed by the present specification is not limited to the embodiments described above with reference to the drawings and the drawings, and includes, for example, various aspects as follows.
(1) In the above embodiment, the resilient contact piece 25 is urged radially inward from the outer side in the radial direction by the three pressing portions 44 of the spring 40, but the biasing portion of the spring is the inner side of the resilient contact piece. The resilient contact piece may be biased from the radially inner side to the outer side by a pressing portion disposed in the biasing portion and projecting radially outward. In this case, the terminal connection portion of the mating terminal has a cylindrical shape that covers the elastic contact piece 25 at the time of fitting, and the pressing portion of the elastic contact piece presses the inner surface of the cylindrical terminal connection portion. It is configured to connect to the other party's terminal.
(2) Although the number of elastic contact pieces 25 is three in the above embodiment, the number of elastic contact pieces may be two or four or more.
(3) In the above embodiment, although the area S on the front outer peripheral surface of the elastic contact piece 25 is not plated, only the peripheral portion of the pressing portion 44 on the elastic contact piece 25 is plated in a spot manner Alternatively, the entire outer surface of the elastic contact piece 25 may not be plated.
１０…雌端子
２４…基部
２５…弾性接触片
２６…隣接接触片（接点部）
２７…非隣接接触片（接点部）
４０…スプリング
４４…押圧部（接点部）
Ｓ…下地が露出している領域 DESCRIPTION OF SYMBOLS 10 ... Female terminal 24 ... Base 25 ... Resilient contact piece 26 ... Adjacent contact piece (contact point part)
27 ... Non-adjacent contact piece (contact part)
40 ... spring 44 ... pressing portion (contact portion)
S: Area where the base is exposed

Claims (3)

  1. 　前後方向に延びる筒状の基部と、
    　前記基部の前端から前方に突出し、前記基部の径方向に弾性変位可能に設けられた複数の弾性接触片と、
    　前記複数の弾性接触片の弾性変位を阻止する方向から、前記複数の弾性接触片に接触し、且つ、前記弾性接触片の弾性変位する方向に弾性変位可能なスプリングと、
    　前記複数の弾性接触片に施されるメッキと、を備え、
    　前記弾性接触片には、メッキが施されている領域と、前記弾性接触片の下地が露出している領域とがあり、
    　前記弾性接触片と、前記スプリングとが接触する接点部の位置は、前記下地が露出している領域内となっている雌端子。     A tubular base extending in the front-rear direction,
    A plurality of resilient contact pieces projecting forward from the front end of the base and provided so as to be elastically displaceable in the radial direction of the base;
    A spring which is in contact with the plurality of elastic contact pieces from a direction preventing the elastic displacement of the plurality of elastic contact pieces and is elastically displaceable in a direction in which the elastic contact pieces are elastically displaced;
    And plating the plurality of elastic contact pieces.
    The resilient contact piece has a region where plating is performed and a region where the base of the resilient contact piece is exposed,
    The position of the contact part which the said elastic contact piece and the said spring contact is in the area | region where the said base | substrate is exposed.
  2. 　前記スプリングは、前記複数の弾性接触片の外周面を囲うように装着され、
    　前記スプリングの外周面には、径方向内側に向かって突出する複数の押圧部が設けられ、
    　前記押圧部は、前記スプリング側の前記接点部である請求項１に記載の雌端子。     The spring is mounted so as to surround outer peripheral surfaces of the plurality of elastic contact pieces,
    The outer circumferential surface of the spring is provided with a plurality of pressing portions projecting radially inward,
    The female terminal according to claim 1, wherein the pressing portion is the contact portion on the spring side.
  3. 　前記スプリングはステンレス鋼から構成されている請求項１又は請求項２に記載の雌端子。 The female terminal according to claim 1, wherein the spring is made of stainless steel.
PCT/JP2018/039038 2017-10-24 2018-10-19 Female terminal WO2019082816A1 (en)

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JP2017-205046 2017-10-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002231356A (en) * 2001-02-05 2002-08-16 Sumitomo Wiring Syst Ltd Terminal fitting
JP2009054374A (en) * 2007-08-24 2009-03-12 Auto Network Gijutsu Kenkyusho:Kk Socket terminal
JP2010113962A (en) * 2008-11-06 2010-05-20 Autonetworks Technologies Ltd Socket terminal
US8317552B2 (en) * 2010-08-27 2012-11-27 Souriau Female electrical contact, connector unit, and process for production
JP2015207540A (en) * 2014-04-23 2015-11-19 日本航空電子工業株式会社 socket contact

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002231356A (en) * 2001-02-05 2002-08-16 Sumitomo Wiring Syst Ltd Terminal fitting
JP2009054374A (en) * 2007-08-24 2009-03-12 Auto Network Gijutsu Kenkyusho:Kk Socket terminal
JP2010113962A (en) * 2008-11-06 2010-05-20 Autonetworks Technologies Ltd Socket terminal
US8317552B2 (en) * 2010-08-27 2012-11-27 Souriau Female electrical contact, connector unit, and process for production
JP2015207540A (en) * 2014-04-23 2015-11-19 日本航空電子工業株式会社 socket contact

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