WO2015019920A1 - Crimping terminal - Google Patents

Crimping terminal Download PDF

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Publication number
WO2015019920A1
WO2015019920A1 PCT/JP2014/070073 JP2014070073W WO2015019920A1 WO 2015019920 A1 WO2015019920 A1 WO 2015019920A1 JP 2014070073 W JP2014070073 W JP 2014070073W WO 2015019920 A1 WO2015019920 A1 WO 2015019920A1
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WO
WIPO (PCT)
Prior art keywords
crimping
conductor
pair
pieces
crimp terminal
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PCT/JP2014/070073
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French (fr)
Japanese (ja)
Inventor
泰史 青木
大▲高▼　一人
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矢崎総業株式会社
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Publication of WO2015019920A1 publication Critical patent/WO2015019920A1/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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/058—Crimping mandrels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors

Definitions

  • the present invention relates to, for example, a crimp terminal that is crimped to a conductor (for example, a conductive wire) portion of an electric wire and attached to the tip of the electric wire.
  • a conductor for example, a conductive wire
  • a crimp terminal C provided with a crimp part V for crimping a conductor DW with a sheath removed is often used.
  • the crimp terminal C includes a connection portion arranged on the distal end side in the longitudinal direction and a wire connection portion arranged on the proximal end side.
  • This electric wire connection part is provided with the crimping
  • the crimping portion V includes a crimping bottom surface VC on which the conductor DW is placed, and crimping pieces VA and VB called wire barrels extending from both sides of the crimping bottom surface VC in the width direction.
  • the crimping terminal C configured as described above is configured such that the crimping portion V and the conductor DW are electrically connected by crimping the conductor DW placed on the crimping bottom surface VC with a pair of crimping pieces VA and VB. And mechanical connection.
  • FIGS. 2A, 2B, and 2C The crimp terminal C and the electric wire JW are viewed from the longitudinal direction.
  • a pair of crimping pieces VA and VB are crimped to the conductor DW as shown in FIG. 2B.
  • the crimping pieces VA and VB are biting into the conductor DW.
  • a strip plating (pre-plating) material may be employed.
  • the H portion which is the fracture surface is not plated.
  • Patent Literature 1 and Patent Literature 2 can be listed as the conventional techniques.
  • the conventional crimp terminal C has the following problems because it has a crimped shape in which the end faces of the pair of crimp pieces VA and VB are bitten into the conductor DW side.
  • An object of the present invention is to provide a crimp terminal capable of improving electrical connectivity and mechanical connectivity.
  • the crimp terminal of this invention is equipped with the crimping
  • the crimp terminal of the present invention forms a continuous curved shape in the vicinity where the ends of the pair of crimping pieces face each other when the pair of crimping pieces are crimped and connected to the conductor. It may be protruding.
  • the crimp terminal of the present invention may be one in which the ends of the pair of crimping pieces interfere with each other when the pair of crimping pieces try to open in the vertical direction when viewed from a predetermined direction, thereby suppressing the opening.
  • the crimp terminal of the present invention may be one in which, when a pair of crimp pieces attempts to open in a horizontal direction when viewed from a predetermined direction, the curved portions of the pair of crimp pieces interfere with the conductor and suppress the opening. .
  • the crimping piece of the crimping part does not bite into the conductor, it is possible to suppress an increase in resistance and a decrease in mechanical performance due to a conductor breakage, and to improve the electrical connectivity and mechanical connectivity.
  • FIG. 1A is a conventional diagram illustrating a conventional technique.
  • FIG. 1B is a conventional diagram illustrating a conventional technique.
  • FIG. 2A is a conventional diagram illustrating a conventional technique.
  • FIG. 2B is a conventional diagram illustrating a conventional technique.
  • FIG. 2C is a conventional diagram illustrating a conventional technique.
  • FIG. 3 is a conventional diagram for explaining a conventional technique.
  • FIG. 4 is an explanatory view illustrating the crimp terminal with a perspective view.
  • FIG. 5 is an explanatory diagram for explaining a crimp terminal manufacturing process.
  • FIG. 6 is an explanatory diagram for explaining the manufacturing process of the crimp terminal.
  • FIG. 7 is an explanatory diagram for explaining the operation of the crimp terminal.
  • FIG. 8 is an explanatory view for explaining the operation of the crimp terminal.
  • FIG. 4 is a perspective view showing the configuration 1 of the manufacturing process and the crimp terminal 10 manufactured by this manufacturing process.
  • 5 and 6 show the manufacturing process of the crimp terminal 10.
  • 7 and 8 show the operation of the crimp terminal 10.
  • the crimp terminal 10 manufactured by the configuration 1 of the manufacturing process includes an insulation coating portion crimping portion 20 that crimps the insulation coating 51 of the electric wire 50 and a crimping portion 30 (insulation coating portion crimping portion 20) that crimps the conductor 52 of the electric wire 50. And also referred to as a wire connecting portion). Furthermore, the connection part 40 connected to another terminal (illustration omitted) is provided.
  • the crimping portion 30 for crimping the conductor 52 includes a bottom plate 33 on which the conductor 52 is placed on an upper surface, and a pair of crimping pieces 31 and 32.
  • the bottom plate 33 and a pair of crimping pieces 31 and 32 extending upward from both side edges of the bottom plate 33 are formed in a U shape.
  • the pair of crimping pieces 31 and 32 are bent inward so as to wrap around the conductor 52 placed on the bottom plate 33 by crimping of the punch P and the die D, and are crimped and connected to the conductor 52.
  • the punch P moves in the direction of the arrow AR1 from above the crimp terminal 10 placed on the die D and comes into contact with the crimp portion 30 to be pressurized, and the pair of crimp pieces 31 and 32 are crimped to form the conductor 52.
  • the crimping part 30 is crimped, and the crimping part 30 and the conductor 52 are electrically and mechanically crimped and connected.
  • the electric wire 50 is formed by covering the conductor 52 made of aluminum or aluminum alloy with an insulating coating 51, and the conductor 52 exposed by peeling off the end of the electric wire 50 is fixed to the crimping portion 30 by crimping.
  • the insulation coating 51 is fixed to the insulation coating portion crimping portion 20.
  • a crimped shape that does not bite into the conductor 52 (a crimped shape in a non-biting state) is formed. Is done.
  • the crimping shape that does not bite into the conductor 52 will be described in detail.
  • the crimping shape projects and curves toward the conductor 52 near the ends of the pair of crimping pieces 31 and 32 facing each other. (Recessed toward the bottom plate 33).
  • the curved shape is smoothly and continuously curved in the vicinity of each of the crimping pieces 31 and 32 facing each other, the end portions of the crimping pieces 31 and 32 do not bite into the conductor 52. Furthermore, since force is evenly applied to the curved surface, it does not bite into the conductor 52.
  • the planar end surface of the crimping piece 31 and the planar end surface of the crimping piece 32 are parallel to each other in the vicinity where the crimping pieces 31 and 32 that are smoothly continuous are opposed to each other. A slight gap is formed between them, but the planar end surface of the crimping piece 31 and the planar end surface of the crimping piece 32 may be in contact with each other.
  • the curved shape cannot be formed in a single process, it is formed in two or more processes. For this reason, a curved shape can be formed reliably.
  • the pressure-bonding pieces 31 and 32, the pressure-bonding pieces 31A and 32A, and the pressure-bonding pieces 31B and 32B are properly used for each shape. Furthermore, the conductor 52, the conductor 52A, and the conductor 52B are properly used for each shape.
  • the conductor 52 cannot be crimped by one caulking, that is, when the curved shape cannot be formed, it is once processed into a non-curved shape as shown in FIG. 5, and then as shown in FIG. It is formed into a curved shape. For this reason, a curved shape is reliably formed.
  • the conductor 52 placed on the die D is clamped by moving the punch P (the punch P whose tip is curved unlike the punch PB in the first step) in the direction of the arrow AR3. To form a crimped shape.
  • the protruding portion corresponding to the dimension A is formed in a curved shape in the vicinity extending from the bottom plate 33 (33B) in both directions and facing the end portions of the crimping pieces 31B and 32B.
  • the crimping shape is curved.
  • the pair of pressure-bonding pieces 31B and 32B interfere with each other to prevent the opening.
  • the crimping piece 31B slightly moves in the direction of the arrow AR4 due to elasticity (assuming that it has moved to the crimping piece 31B ′ shown by the two-dot chain line), and the crimping piece 32B slightly moves in the direction of the arrow AR5 due to elasticity. (Assuming that it has moved to the crimping piece 32B ′ shown by the two-dot chain line), as shown by the area ER1, the corner of the end of the crimping piece 31B ′ and the end of the crimping piece 32B ′ Opening in the vertical direction is prevented by interference from one corner.
  • the crimping shape is such that when the pair of crimping pieces 31B and 32B are about to open in the horizontal direction (corresponding to the left and right direction with respect to the page when viewing the page in the embodiment of the present invention), The crimping pieces 31B, 32B interfere with the conductor 52B and have a shape that suppresses the opening.
  • the crimping piece 31B slightly moves in the direction of the arrow AR6 due to elasticity (assuming that it has moved to the crimping piece 31B ′′ shown by the two-dot chain line), and the crimping piece 32B slightly moves in the direction of the arrow AR7 due to elasticity.
  • the areas ER2 and ER3 respectively, one corner of the curved portion of the crimping piece 31B ′′ and the conductor 52B Interfere with.
  • one corner of the curved portion of the crimping piece 32B ′′ interferes with the conductor 52B to prevent horizontal opening.
  • the crimping piece of the crimping portion does not bite into the conductor, it is possible to suppress an increase in resistance due to a conductor breakage and a decrease in mechanical performance, and to improve electrical connectivity and mechanical connectivity. Play.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

　A wire connecting section of a crimping terminal (10) is provided with a crimping section (30) to be crimped on a conductor (52) of a cable. The crimping section (30) has a bottom plate (33) that allows the conductor (52) to be placed on the upper surface, and a pair of crimping pieces (31, 32) that extend up from both side edges of the bottom plate (33) in the width direction. The pair of crimping pieces (32, 33) bend inwardly in such a manner as to wrap around the conductor (52), which has been placed on the bottom plate (33), by means of crimping, thereby being crimped and connected to the conductor (52). Moreover, when the pair of crimping pieces (31, 32) have been crimped and connected to the conductor (52), a crimping form in which the pair of crimping pieces (31, 32) do not dig into the conductor (52) is formed.

Description

圧着端子Crimp terminal
　この発明は、例えば、電線の導体（例えば、導線）部分に圧着して、電線の先端に装着する圧着端子に関する。 The present invention relates to, for example, a crimp terminal that is crimped to a conductor (for example, a conductive wire) portion of an electric wire and attached to the tip of the electric wire.
　従来、図１Ａに示すように、電線ＪＷの先端に装着する端子金具として、被覆をはがした導体ＤＷを圧着する圧着部Ｖを備えた圧着端子Ｃが多く用いられている。 Conventionally, as shown in FIG. 1A, as a terminal fitting to be attached to the tip of the electric wire JW, a crimp terminal C provided with a crimp part V for crimping a conductor DW with a sheath removed is often used.
　詳しくは、圧着端子Ｃは、長手方向の先端側に配置した接続部と、基端側に配置した電線接続部を備える。この電線接続部は、電線ＪＷの導体ＤＷを圧着する圧着部Ｖを備える。この圧着部Ｖは、前記導体ＤＷを載置する圧着底面ＶＣと、該圧着底面ＶＣの幅方向両側から延出するワイヤーバレルと呼ばれる圧着片ＶＡ、ＶＢと、を有している。 Specifically, the crimp terminal C includes a connection portion arranged on the distal end side in the longitudinal direction and a wire connection portion arranged on the proximal end side. This electric wire connection part is provided with the crimping | compression-bonding part V which crimps | bonds the conductor DW of the electric wire JW. The crimping portion V includes a crimping bottom surface VC on which the conductor DW is placed, and crimping pieces VA and VB called wire barrels extending from both sides of the crimping bottom surface VC in the width direction.
　上記のように構成された圧着端子Ｃは、図１Ｂに示すように圧着底面ＶＣに載置した導体ＤＷを一対の圧着片ＶＡ、ＶＢで圧着することによって、圧着部Ｖと導体ＤＷとを電気的かつ機械的に接続することができる。 As shown in FIG. 1B, the crimping terminal C configured as described above is configured such that the crimping portion V and the conductor DW are electrically connected by crimping the conductor DW placed on the crimping bottom surface VC with a pair of crimping pieces VA and VB. And mechanical connection.
　通常、このような圧着端子Ｃと導体ＤＷとの接続において、圧着端子Ｃに導体ＤＷを圧着接続する際、一対の圧着片ＶＡ、ＶＢの端面を導体ＤＷ側に食込ませた圧着形状を採用していた。 Normally, in the connection between the crimp terminal C and the conductor DW, when the conductor DW is crimped and connected to the crimp terminal C, a crimp shape in which the end surfaces of the pair of crimp pieces VA and VB are cut into the conductor DW side is adopted. Was.
　図２Ａ，２Ｂ，２Ｃを参照する。圧着端子Ｃと電線ＪＷとを長手方向から見たものである。図２Ａに示すように電線ＪＷの導体ＤＷをパンチＪＰ、ダイＪＤで加締めると、図２Ｂに示すように、一対の圧着片ＶＡ、ＶＢ（図１Ａ参照）が導体ＤＷに圧着する。そして、図２Ｂに示すエリアＥＲ４に着目すると圧着片ＶＡ、ＶＢが導体ＤＷに食込んでいることがわかる。 Refer to FIGS. 2A, 2B, and 2C. The crimp terminal C and the electric wire JW are viewed from the longitudinal direction. When the conductor DW of the electric wire JW is crimped with the punch JP and the die JD as shown in FIG. 2A, a pair of crimping pieces VA and VB (see FIG. 1A) are crimped to the conductor DW as shown in FIG. 2B. Then, when attention is paid to the area ER4 shown in FIG. 2B, it can be seen that the crimping pieces VA and VB are biting into the conductor DW.
　また、図３に示すように、条材めっき（先めっき）材を採用する場合もある。この場合に、破断面であるＨ部分はメッキされないものである。 Also, as shown in FIG. 3, a strip plating (pre-plating) material may be employed. In this case, the H portion which is the fracture surface is not plated.
　なお、上記従来の技術として特許文献１、特許文献２を掲げることができる。 In addition, Patent Literature 1 and Patent Literature 2 can be listed as the conventional techniques.
特開２００９－２４５７００号公報JP 2009-245700 A 特開２００９－２２４１２０号公報JP 2009-224120 A
　しかしながら、従来の圧着端子Ｃは、一対の圧着片ＶＡ、ＶＢの端面を導体ＤＷ側に食い込ませた圧着形状としていたため下記のような問題があった。 However, the conventional crimp terminal C has the following problems because it has a crimped shape in which the end faces of the pair of crimp pieces VA and VB are bitten into the conductor DW side.
　圧着片ＶＡ、ＶＢの端面により、導体切れが発生し圧着部Ｖの性能（電気的・機械的性能）が低下するという問題があった。 There was a problem that the conductors were cut off by the end faces of the crimping pieces VA and VB, and the performance (electrical / mechanical performance) of the crimping part V was lowered.
　また、条材めっき（先めっき）材を採用した際、圧着部Ｖの端面がプレス破断面となり非めっき面のため腐食し易く導体腐食により圧着部性能が低下するという問題があった。さらに、各圧着片ＶＡ、ＶＢが開いてしまうという問題があった。 Further, when the strip plating (pre-plating) material is adopted, there is a problem that the end surface of the crimping portion V becomes a press fracture surface and is easily corroded because of the non-plated surface, and the performance of the crimping portion is deteriorated due to conductor corrosion. Furthermore, there has been a problem that the pressure-bonding pieces VA and VB are opened.
　アルミ電線の腐食防止対策として防火シートなどを端子、導体間に挟み込んだ場合、圧着部先端によりシートが破損するという問題があった。 対 策 When a fireproof sheet or the like is sandwiched between terminals and conductors as a countermeasure against corrosion of aluminum wires, there is a problem that the sheet is damaged by the tip of the crimping part.
　この発明は、電気接続性及び機械接続性を向上することができる圧着端子を提供することを目的とする。 An object of the present invention is to provide a crimp terminal capable of improving electrical connectivity and mechanical connectivity.
　本発明は上述の問題を解決するためのものであり、本発明の圧着端子は、電線の導体に圧着するための圧着部を備え、圧着部が、導体を上面に載せる底板と、底板の幅方向両側縁から上に延びる一対の圧着片と、を有し、一対の圧着片が、加締めにより底板上に載せた導体を包み込むように内側に曲げられて、導体に圧着接続する圧着端子であって、一対の圧着片が導体に圧着接続した場合に各圧着片同士で湾曲形状が成形され、各圧着片の端部が導体に対して非食い込み状態になっていることを特徴とする圧着端子である。 This invention is for solving the above-mentioned problem, The crimp terminal of this invention is equipped with the crimping | compression-bonding part for crimping | bonding to the conductor of an electric wire, and a crimping | compression-bonding part mounts a conductor on an upper surface, and the width | variety of a bottom plate A pair of crimping pieces extending upward from both side edges in the direction, and the pair of crimping pieces are bent inward so as to wrap the conductor placed on the bottom plate by caulking, In addition, when a pair of crimping pieces are crimped and connected to a conductor, a curved shape is formed between the crimping pieces, and an end portion of each crimping piece is in a state of non-breaking into the conductor. Terminal.
　本発明の圧着端子は、一対の圧着片が導体に圧着接続した場合に、一対の圧着片の各端部同士が対向する付近で連続的な湾曲形状を形成し、この湾曲形状は導体側に突出しているものであってもよい。 The crimp terminal of the present invention forms a continuous curved shape in the vicinity where the ends of the pair of crimping pieces face each other when the pair of crimping pieces are crimped and connected to the conductor. It may be protruding.
　本発明の圧着端子は、所定の方向から見て垂直方向に一対の圧着片が開こうとした場合に一対の圧着片の各端部同士が干渉し開きを抑制するものであってもよい。 The crimp terminal of the present invention may be one in which the ends of the pair of crimping pieces interfere with each other when the pair of crimping pieces try to open in the vertical direction when viewed from a predetermined direction, thereby suppressing the opening.
　本発明の圧着端子は、所定の方向から見て水平方向に一対の圧着片が開こうとした場合に一対の圧着片の湾曲した部分が導体に干渉し開きを抑制するものであってもよい。 The crimp terminal of the present invention may be one in which, when a pair of crimp pieces attempts to open in a horizontal direction when viewed from a predetermined direction, the curved portions of the pair of crimp pieces interfere with the conductor and suppress the opening. .
　圧着部の圧着片が導体に食込まないことから、導体切れによる抵抗上昇、機械的性能低下を抑制でき、電気接続性及び機械接続性を向上することができるという効果を奏する。 Since the crimping piece of the crimping part does not bite into the conductor, it is possible to suppress an increase in resistance and a decrease in mechanical performance due to a conductor breakage, and to improve the electrical connectivity and mechanical connectivity.
　また、アルミ電線の腐食防止対策として防火シートなどを端子、導体間に挟み込んだ場合、圧着部先端によるシート破損が防止できるという効果を奏する。 In addition, when a fireproof sheet or the like is sandwiched between terminals and conductors as a countermeasure for preventing corrosion of aluminum wires, it is possible to prevent damage to the sheet due to the tip of the crimping part.
　さらに、圧着後の圧着部開き（導体締め付け緩み）を抑制できるという効果を奏する。例えば、圧着片が導体側に湾曲していることで左右圧着片干渉、圧着片と導体干渉で圧着部開きを抑制できる。 Furthermore, there is an effect that it is possible to suppress the opening of the crimping part (conductor tightening loosening) after crimping. For example, since the crimping piece is curved toward the conductor side, it is possible to suppress the opening of the crimping part due to the interference between the left and right crimping pieces and the interference between the crimping piece and the conductor.
図１Ａは、従来の技術を説明する従来図である。FIG. 1A is a conventional diagram illustrating a conventional technique. 図１Ｂは、従来の技術を説明する従来図である。FIG. 1B is a conventional diagram illustrating a conventional technique. 図２Ａは、従来の技術を説明する従来図である。FIG. 2A is a conventional diagram illustrating a conventional technique. 図２Ｂは、従来の技術を説明する従来図である。FIG. 2B is a conventional diagram illustrating a conventional technique. 図２Ｃは、従来の技術を説明する従来図である。FIG. 2C is a conventional diagram illustrating a conventional technique. 図３は、従来の技術を説明する従来図である。FIG. 3 is a conventional diagram for explaining a conventional technique. 図４は、圧着端子を斜視図により説明する説明図である。FIG. 4 is an explanatory view illustrating the crimp terminal with a perspective view. 図５は、圧着端子の製造工程を説明する説明図である。FIG. 5 is an explanatory diagram for explaining a crimp terminal manufacturing process. 図６は、圧着端子の製造工程を説明する説明図である。FIG. 6 is an explanatory diagram for explaining the manufacturing process of the crimp terminal. 図７は、圧着端子の作用を説明する説明図である。FIG. 7 is an explanatory diagram for explaining the operation of the crimp terminal. 図８は、圧着端子の作用を説明する説明図である。FIG. 8 is an explanatory view for explaining the operation of the crimp terminal.
　図面を参照して、本発明の実施の形態を詳細に説明する。 Embodiments of the present invention will be described in detail with reference to the drawings.
　但し、図面は模式的なものであり、装置やシステムの構成等は現実のものとは異なることに留意すべきである。したがって、具体的な構成は以下の説明を参酌して判断すべきものである。また、図面相互間においても互いの構成の異なる部分が含まれていることは勿論である。 However, it should be noted that the drawings are schematic and the configuration of the apparatus and system is different from the actual one. Therefore, a specific configuration should be determined in consideration of the following description. In addition, it is a matter of course that portions having different configurations are included between the drawings.
　以下、本発明の実施形態を図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　図４は、製造工程の構成１と、この製造工程により製造される圧着端子１０とを示す斜視図である。図５、図６は、圧着端子１０の製造工程を示す。図７、図８は、圧着端子１０の作用を示す。 FIG. 4 is a perspective view showing the configuration 1 of the manufacturing process and the crimp terminal 10 manufactured by this manufacturing process. 5 and 6 show the manufacturing process of the crimp terminal 10. 7 and 8 show the operation of the crimp terminal 10.
　図４を参照する。製造工程の構成１により製造される圧着端子１０は、電線５０の絶縁被覆５１に圧着する絶縁被覆部圧着部２０と、電線５０の導体５２に圧着する圧着部３０（絶縁被覆部圧着部２０と圧着部３０とで電線接続部ともいう）とを備える。さらに他端子（図示省略）に接続する接続部４０を備える。 Refer to FIG. The crimp terminal 10 manufactured by the configuration 1 of the manufacturing process includes an insulation coating portion crimping portion 20 that crimps the insulation coating 51 of the electric wire 50 and a crimping portion 30 (insulation coating portion crimping portion 20) that crimps the conductor 52 of the electric wire 50. And also referred to as a wire connecting portion). Furthermore, the connection part 40 connected to another terminal (illustration omitted) is provided.
　前記導体５２を圧着する圧着部３０は、前記導体５２を上面に載せる底板３３と、一対の圧着片３１、３２とを備えている。そして、この底板３３と、底板３３の幅方向両側縁から上に延びる一対の圧着片３１、３２とがＵ字状に形成される。 The crimping portion 30 for crimping the conductor 52 includes a bottom plate 33 on which the conductor 52 is placed on an upper surface, and a pair of crimping pieces 31 and 32. The bottom plate 33 and a pair of crimping pieces 31 and 32 extending upward from both side edges of the bottom plate 33 are formed in a U shape.
　当該一対の圧着片３１、３２は、パンチＰとダイＤの加締めにより前記底板３３上に載せた導体５２を包み込むように内側に曲げられて、前記導体５２に圧着接続するものである。 The pair of crimping pieces 31 and 32 are bent inward so as to wrap around the conductor 52 placed on the bottom plate 33 by crimping of the punch P and the die D, and are crimped and connected to the conductor 52.
　すなわち、ダイＤ上に載せた圧着端子１０の上から矢印ＡＲ１方向にパンチＰが移動して前記圧着部３０に当接し加圧され、前記一対の圧着片３１、３２が加締められて導体５２を圧着部３０が圧着し、圧着部３０と導体５２とが電気的、かつ、機械的に圧着接続するものである。 That is, the punch P moves in the direction of the arrow AR1 from above the crimp terminal 10 placed on the die D and comes into contact with the crimp portion 30 to be pressurized, and the pair of crimp pieces 31 and 32 are crimped to form the conductor 52. The crimping part 30 is crimped, and the crimping part 30 and the conductor 52 are electrically and mechanically crimped and connected.
　なお、電線５０は、アルミニウムまたはアルミニウム合金よりなる導体５２の周囲を絶縁被覆５１で覆ったもので、電線５０の端末の皮剥きして露出させられた導体５２が、圧着部３０に圧着固定される。絶縁被覆５１は、絶縁被覆部圧着部２０に固定されるものである。 The electric wire 50 is formed by covering the conductor 52 made of aluminum or aluminum alloy with an insulating coating 51, and the conductor 52 exposed by peeling off the end of the electric wire 50 is fixed to the crimping portion 30 by crimping. The The insulation coating 51 is fixed to the insulation coating portion crimping portion 20.
　本発明の実施形態において、特徴的な部分として、前記一対の圧着片３１、３２が前記導体５２を圧着した場合に、当該導体５２に食込まない圧着形状（非食い込み状態の圧着形状）が成形される。 In the embodiment of the present invention, as a characteristic part, when the pair of crimping pieces 31 and 32 crimps the conductor 52, a crimped shape that does not bite into the conductor 52 (a crimped shape in a non-biting state) is formed. Is done.
　前記導体５２に食い込まない圧着形状について詳細に説明する。前記一対の圧着片３１、３２が前記導体５２に圧着接続した場合に、前記圧着形状は、前記一対の圧着片３１、３２の各端部が対向する付近で前記導体５２側に突出し湾曲している（底板３３側に凹んでいる）。 The crimping shape that does not bite into the conductor 52 will be described in detail. When the pair of crimping pieces 31 and 32 are crimped and connected to the conductor 52, the crimping shape projects and curves toward the conductor 52 near the ends of the pair of crimping pieces 31 and 32 facing each other. (Recessed toward the bottom plate 33).
　この湾曲した形状は、各圧着片３１、３２の対向する付近で滑らかに連続し湾曲しているため、導体５２に圧着片３１、３２の端部は食い込まないものである。さらに、湾曲している面に均等に力が加わるため導体５２に食い込まないものである。 Since the curved shape is smoothly and continuously curved in the vicinity of each of the crimping pieces 31 and 32 facing each other, the end portions of the crimping pieces 31 and 32 do not bite into the conductor 52. Furthermore, since force is evenly applied to the curved surface, it does not bite into the conductor 52.
　なお、本発明の実施形態において、滑らかに連続している各圧着片３１、３２の対向する付近は、圧着片３１の平面状の端面と圧着片３２の平面状の端面とが平行になってお互いの間にわずかな隙間が形成されているが、圧着片３１の平面状の端面と圧着片３２の平面状の端面とが当接していてもよい。 In the embodiment of the present invention, the planar end surface of the crimping piece 31 and the planar end surface of the crimping piece 32 are parallel to each other in the vicinity where the crimping pieces 31 and 32 that are smoothly continuous are opposed to each other. A slight gap is formed between them, but the planar end surface of the crimping piece 31 and the planar end surface of the crimping piece 32 may be in contact with each other.
　また、湾曲形状が１回の工程で成形できない場合は、２回以上の工程で成形する。このため、確実に湾曲形状が成形できる。 In addition, if the curved shape cannot be formed in a single process, it is formed in two or more processes. For this reason, a curved shape can be formed reliably.
　図５、図６を参照する。ここでは、圧着片３１、３２と、圧着片３１Ａ、３２Ａと、圧着片３１Ｂ、３２Ｂとを形状毎に使い分けている。さらに、導体５２と、導体５２Ａと、導体５２Ｂとを形状毎に使い分けている。 Refer to FIG. 5 and FIG. Here, the pressure-bonding pieces 31 and 32, the pressure- bonding pieces 31A and 32A, and the pressure-bonding pieces 31B and 32B are properly used for each shape. Furthermore, the conductor 52, the conductor 52A, and the conductor 52B are properly used for each shape.
　上述のように１回の加締めで導体５２を圧着できない場合、つまり前記湾曲形状が成形できない場合は、図５に示すように一旦、湾曲の無い形状に加工し、その後、図６に示すように湾曲した形状に形成する。このため、確実に湾曲形状が形成される。 As described above, when the conductor 52 cannot be crimped by one caulking, that is, when the curved shape cannot be formed, it is once processed into a non-curved shape as shown in FIG. 5, and then as shown in FIG. It is formed into a curved shape. For this reason, a curved shape is reliably formed.
　すなわち、図５に示すように、ダイＤにパンチＰＢ（先端が平坦なパンチＰＢである）が矢印ＡＲ２方向から移動することにより、底板３３（３３Ａ）から両方向に伸びた圧着片３１、３２を、加締めにより成形する。ここでは、第１工程として、圧着片３１Ａ、３２Ａの対向する付近においては、平坦な形状が成形される。 That is, as shown in FIG. 5, when the punch PB (punch PB having a flat tip) moves on the die D from the direction of the arrow AR2, the crimping pieces 31 and 32 extending in both directions from the bottom plate 33 (33A) are formed. Molded by caulking. Here, as a first step, a flat shape is formed in the vicinity of the pressure- bonding pieces 31A and 32A facing each other.
　続いて、図６に示すように、ダイＤに載せられた導体５２をパンチＰ（第１工程のパンチＰＢと異なり先端が湾曲しているパンチＰである）が矢印ＡＲ３方向に移動し加締めにより圧着形状を成形する。 Subsequently, as shown in FIG. 6, the conductor 52 placed on the die D is clamped by moving the punch P (the punch P whose tip is curved unlike the punch PB in the first step) in the direction of the arrow AR3. To form a crimped shape.
　これにより、底板３３（３３Ｂ）から両方向に伸びて圧着片３１Ｂ、３２Ｂの端部同士が対向する付近において、寸法Ａに相当する突出部が湾曲した形状で成形される。このため、圧着部３０の先端部が導体５２Ｂに食込まないことから導体切れによる抵抗上昇、機械的性能低下を抑制でき、電気接続性及び機械接続性を向上することができる圧着端子を得ることができるという効果を奏する。また、アルミ電線の腐食防止対策として防火シートなどを圧着端子１０、導体５２Ｂ間に挟み込んだ場合、圧着部３０Ｂの圧着片３１Ｂ、３２Ｂの先端によるシート破損が防止できるという効果を奏する。 Thus, the protruding portion corresponding to the dimension A is formed in a curved shape in the vicinity extending from the bottom plate 33 (33B) in both directions and facing the end portions of the crimping pieces 31B and 32B. For this reason, since the front-end | tip part of the crimping | compression-bonding part 30 does not bite into the conductor 52B, the resistance rise by a conductor cut | disconnection and the mechanical performance fall can be suppressed, and the crimp terminal which can improve electrical connectivity and mechanical connectivity is obtained. There is an effect that can be. Further, when a fireproof sheet or the like is sandwiched between the crimp terminal 10 and the conductor 52B as a measure for preventing the corrosion of the aluminum electric wire, there is an effect that it is possible to prevent the sheet from being damaged by the tips of the crimp pieces 31B and 32B of the crimp part 30B.
　図７を参照する。上述のように、前記圧着形状は湾曲している。そして、前記圧着形状は、垂直方向（本発明の実施形態では紙面を見た場合に紙面に対して上下方向に相当する）に前記一対の圧着片３１Ｂ、３２Ｂが開こうとした場合に、前記一対の圧着片３１Ｂ、３２Ｂが干渉し、開きを抑制する形状である。 Refer to FIG. As described above, the crimping shape is curved. When the pair of crimping pieces 31B and 32B are about to open in the vertical direction (corresponding to the vertical direction with respect to the paper surface when the paper surface is viewed in the embodiment of the present invention), The pair of pressure-bonding pieces 31B and 32B interfere with each other to prevent the opening.
　すなわち、圧着片３１Ｂが弾性により矢印ＡＲ４方向に僅かに移動する（２点鎖線で示した圧着片３１Ｂ’まで移動したものと想定する）とともに、圧着片３２Ｂが弾性により矢印ＡＲ５方向に僅かに移動した（２点鎖線で示した圧着片３２Ｂ’まで移動したものと想定する）場合に、エリアＥＲ１で示したように、圧着片３１Ｂ’の端部の一角と、圧着片３２Ｂ’の端部の一角が干渉することにより垂直方向の開きを防止している。 That is, the crimping piece 31B slightly moves in the direction of the arrow AR4 due to elasticity (assuming that it has moved to the crimping piece 31B ′ shown by the two-dot chain line), and the crimping piece 32B slightly moves in the direction of the arrow AR5 due to elasticity. (Assuming that it has moved to the crimping piece 32B ′ shown by the two-dot chain line), as shown by the area ER1, the corner of the end of the crimping piece 31B ′ and the end of the crimping piece 32B ′ Opening in the vertical direction is prevented by interference from one corner.
　図８を参照する。前記圧着形状は、水平方向（本発明の実施形態では紙面を見た場合に紙面に対して左右方向に相当する）に前記一対の圧着片３１Ｂ、３２Ｂが開こうとした場合に、前記一対の圧着片３１Ｂ、３２Ｂが導体５２Ｂに干渉し、開きを抑制する形状である。 Refer to FIG. The crimping shape is such that when the pair of crimping pieces 31B and 32B are about to open in the horizontal direction (corresponding to the left and right direction with respect to the page when viewing the page in the embodiment of the present invention), The crimping pieces 31B, 32B interfere with the conductor 52B and have a shape that suppresses the opening.
　すなわち、圧着片３１Ｂが弾性により矢印ＡＲ６方向に僅かに移動する（２点鎖線で示した圧着片３１Ｂ’’まで移動したものと想定する）とともに、圧着片３２Ｂが弾性により矢印ＡＲ７方向に僅かに移動した（２点鎖線で示した圧着片３２Ｂ’’まで移動したものと想定する）場合に、それぞれエリアＥＲ２、エリアＥＲ３で示したように、圧着片３１Ｂ’’の湾曲部分の一角と導体５２Ｂとが干渉する。一方、圧着片３２Ｂ’’の湾曲部分の一角と導体５２Ｂとが干渉することにより水平方向の開きを防止している。 That is, the crimping piece 31B slightly moves in the direction of the arrow AR6 due to elasticity (assuming that it has moved to the crimping piece 31B ″ shown by the two-dot chain line), and the crimping piece 32B slightly moves in the direction of the arrow AR7 due to elasticity. When moved (assumed to have moved to the crimping piece 32B ″ indicated by the two-dot chain line), as shown by the areas ER2 and ER3, respectively, one corner of the curved portion of the crimping piece 31B ″ and the conductor 52B Interfere with. On the other hand, one corner of the curved portion of the crimping piece 32B ″ interferes with the conductor 52B to prevent horizontal opening.
　この発明は、前述の発明の実施形態に限定されることなく、適宜な変更を行うことにより、その他の態様で実施し得るものである。 The present invention is not limited to the embodiment of the invention described above, and can be implemented in other modes by making appropriate modifications.
　以上、本発明の実施形態について説明したが、これらの実施形態は本発明の理解を容易にするために記載された単なる例示に過ぎず、本発明は当該実施形態に限定されるものではない。本発明の技術的範囲は、上記実施形態で開示した具体的な技術事項に限らず、そこから容易に導きうる様々な変形、変更、代替技術なども含むものである。 As mentioned above, although embodiment of this invention was described, these embodiment is only the mere illustration described in order to make an understanding of this invention easy, and this invention is not limited to the said embodiment. The technical scope of the present invention is not limited to the specific technical matters disclosed in the above embodiment, but includes various modifications, changes, alternative techniques, and the like that can be easily derived therefrom.
　本出願は、２０１３年８月７日に出願された日本国特許出願第２０１３－１６４２０４号に基づく優先権を主張しており、この出願の全内容が参照により本願明細書に組み込まれる。 This application claims priority based on Japanese Patent Application No. 2013-164204 filed on August 7, 2013, the entire contents of which are incorporated herein by reference.
　本発明によれば、圧着部の圧着片が導体に食込まないことから、導体切れによる抵抗上昇、機械的性能低下を抑制でき、電気接続性及び機械接続性を向上することができるという効果を奏する。 According to the present invention, since the crimping piece of the crimping portion does not bite into the conductor, it is possible to suppress an increase in resistance due to a conductor breakage and a decrease in mechanical performance, and to improve electrical connectivity and mechanical connectivity. Play.
１　製造工程の構成　１０　圧着端子　２０　絶縁被覆部圧着部（電線接続部）　３０　圧着部（電線接続部）　３１　圧着片　３２　圧着片　３３　底板　４０　接続部　５０　電線　５１　絶縁被覆　５２　導体　Ｐ　パンチ　Ｄ　ダイ 1 Manufacturing process composition 10 Crimp terminal 20 Insulation coating part crimping part (wire connection part) 30 Crimping part (wire connection part) 31 Crimping piece 32 Crimping piece 33 Bottom plate 40 Connection part 50 Electric wire 51 Insulation coating 52 Conductor P Punch D Die

Claims (4)

  1. 電線の導体に圧着するための圧着部を備え、
    　前記圧着部が、前記導体を上面に載せる底板と、前記底板の幅方向両側縁から上に延びる一対の圧着片と、を有し、
    　前記一対の圧着片が、加締めにより前記底板上に載せた前記導体を包み込むように内側に曲げられて、前記導体に圧着接続する圧着端子であって、
    　前記一対の圧着片が、前記導体に圧着接続した場合に各圧着片同士で湾曲形状が成形され、前記各圧着片の端部が前記導体に対して非食い込み状態になっていることを特徴とする圧着端子。     It has a crimping part for crimping to the conductor of the wire,
    The crimping portion includes a bottom plate on which the conductor is placed on an upper surface, and a pair of crimping pieces extending upward from both side edges of the bottom plate;
    The pair of crimping pieces are crimped terminals that are bent inward so as to wrap around the conductor placed on the bottom plate by caulking, and are crimped to the conductor,
    When the pair of crimping pieces are crimped and connected to the conductor, a curved shape is formed between the crimping pieces, and an end portion of each crimping piece is in a non-breaking state with respect to the conductor, Crimp terminal to be used.
  2. 請求項１に記載の圧着端子であって、
    　前記一対の圧着片が前記導体に圧着接続した場合に、前記一対の圧着片の各端部同士が対向する付近で連続的な湾曲形状を形成し、この湾曲形状は前記導体側に突出していることを特徴とする圧着端子。     The crimp terminal according to claim 1,
    When the pair of crimping pieces are crimped and connected to the conductor, a continuous curved shape is formed in the vicinity where the ends of the pair of crimping pieces face each other, and the curved shape protrudes toward the conductor. Crimp terminal characterized by that.
  3. 請求項２に記載の圧着端子であって、
    所定の方向から見て垂直方向に前記一対の圧着片が開こうとした場合に前記一対の圧着片の各端部同士が干渉し開きを抑制することを特徴とする圧着端子。     The crimp terminal according to claim 2,
    A crimp terminal, wherein when the pair of crimping pieces is about to open in a vertical direction when viewed from a predetermined direction, the ends of the pair of crimping pieces interfere with each other to suppress the opening.
  4. 請求項２または３に記載の圧着端子であって、
    　所定の方向から見て水平方向に前記一対の圧着片が開こうとした場合に前記一対の圧着片の湾曲した部分が前記導体に干渉し開きを抑制することを特徴とする圧着端子。     The crimp terminal according to claim 2 or 3,
    A crimp terminal, wherein when the pair of crimping pieces is about to open in a horizontal direction when viewed from a predetermined direction, the curved portions of the pair of crimping pieces interfere with the conductor to suppress the opening.
PCT/JP2014/070073 2013-08-07 2014-07-30 Crimping terminal WO2015019920A1 (en)

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