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WO2009084090A1 - Connection between single wire and crimping terminal, and connecting method between single wire and crimping terminal - Google Patents

Connection between single wire and crimping terminal, and connecting method between single wire and crimping terminal Download PDF

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Publication number
WO2009084090A1
WO2009084090A1 PCT/JP2007/075164 JP2007075164W WO2009084090A1 WO 2009084090 A1 WO2009084090 A1 WO 2009084090A1 JP 2007075164 W JP2007075164 W JP 2007075164W WO 2009084090 A1 WO2009084090 A1 WO 2009084090A1
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WO
WIPO (PCT)
Prior art keywords
wire
wire barrel
barrel
single wire
bottom wall
Prior art date
Application number
PCT/JP2007/075164
Other languages
French (fr)
Japanese (ja)
Inventor
Shuichi Muramatsu
Yuji Watanabe
Hirofumi Yamaguchi
Kazuo Hara
Sadaharu Nishimori
Yuji Tomita
Hidetoshi Suzuki
Kenji Kimura
Original Assignee
Kokusan Denki Co., Ltd.
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 Kokusan Denki Co., Ltd. filed Critical Kokusan Denki Co., Ltd.
Priority to PCT/JP2007/075164 priority Critical patent/WO2009084090A1/en
Publication of WO2009084090A1 publication Critical patent/WO2009084090A1/en

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Classifications

    • 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
    • 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
    • H01R43/048—Crimping apparatus or processes
    • H01R43/0486—Crimping apparatus or processes with force measuring means
    • 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
    • H01R43/048—Crimping apparatus or processes
    • H01R43/0488—Crimping apparatus or processes with crimp height adjusting means

Definitions

  • a wire barrel and an insulation barrel connected to the rear end side of a terminal portion are used.
  • the wire barrel is formed in a U-shape having a bottom wall portion with one end connected to the rear end portion of the terminal portion and a pair of side wall portions standing on the same side from both ends in the width direction of the bottom wall portion.
  • the insulation barrel has a U-shape having a bottom wall portion with one end connected to the other end of the bottom wall portion of the wire barrel and a pair of side wall portions standing on the same side from both ends in the width direction of the bottom wall portion. Is formed.
  • the pair of side wall portions are bent toward the core wire side of the electric wire in a state where the core wire of the electric wire is received between the pair of side wall portions of the bottom wall portion of the wire barrel.
  • the wire barrel and the core wire of the electric wire are shaped so that the core wire of the electric wire is held inside the wire barrel, and the crimp connection part between the wire barrel and the electric wire is configured. To do.
  • this crimp connection part the electrical conduction state between the crimp terminal and the core wire is good, and so as not to cause excessive deformation in the wire barrel and the core wire of the electric wire,
  • the crimp height (height of the crimping connection measured in the crimping direction) is managed.
  • the insulation barrel is It forms so that the part covered with the insulation coating of the electric wire may be held inside, and the connection part of an insulation barrel and an electric wire is formed.
  • Patent Document 1 when connecting a bare single wire without an insulation coating or a single wire with a thin insulation coating such as a magnet wire to a crimp terminal, as shown in Patent Document 1, a part of the insulation coating is used. Cannot be caused to penetrate into the hole provided in the bottom wall portion of the barrel, and therefore the tensile strength of the connecting portion between the single wire and the crimp terminal cannot be increased by the method disclosed in Patent Document 1.
  • the bottom wall 102a of the wire barrel of the crimp terminal 1 having the wire barrel 102 including the bottom wall 102a and the side walls 102b and 102b is provided.
  • the wire barrel 102 is deformed as shown in FIG. It is conceivable to increase the tensile strength of the crimp connection portion between the crimp terminal 1 and the single wire 2 by deforming 2 and causing a part 2a of the metal constituting the single wire to bite into the hole 102c in the bottom wall portion of the wire barrel. .
  • the single wire is connected to a normal crimp terminal having no hole in the bottom wall portion of the wire barrel.
  • an excessive force is applied to the wire barrel, There is a risk of cracking.
  • this inventor repeated the experiment which shape
  • An object of the present invention is to cut a part of a single wire into a recess or hole provided in the bottom wall portion of the wire barrel without causing a crack in the wire barrel when forming a crimp connection portion between the crimp terminal and the single wire.
  • an object of the present invention is to provide a connection portion between a single wire and a crimp terminal that can increase the tensile strength of the crimp connection portion.
  • the present invention provides a connection between a crimp wire terminal and a single wire, each having a wire barrel having a bottom wall portion and a pair of side wall portions erected on the same side from both ends in the width direction of the bottom wall portion. Applied to the department.
  • a recess or hole having an opening opened in a space between a pair of side walls of the wire barrel is provided.
  • the single wire is arranged so as to overlap the recess or hole in the bottom wall portion of the wire barrel, and the wire barrel and the single wire are formed so that the single wire is held inside the wire barrel, and the wire barrel becomes a single wire.
  • the contour shape of the cross-section of the crimp connection portion has two sides opposed to the crimp height direction of the crimp connection portion, and a pair opposed to the direction orthogonal to the crimp height direction.
  • the wire barrel and the single wire are formed to have a hexagonal shape having a plurality of vertices.
  • the cross-sectional contour shape of the crimping connection portion is a hexagon
  • the amount of metal that escapes to the outside during the molding of the wire barrel among the metals constituting the wire barrel is increased. Since the radius of curvature at both ends of the cross section can be increased, the wire barrel can be deformed until a part of the single wire bites into the recess or hole in the bottom wall of the wire barrel without applying excessive force to the wire barrel. Thus, a crimp connection part can be formed. Therefore, it is possible to increase the tensile strength of the connection portion between the crimp terminal and the single wire by causing a part of the single wire to bite into the recess or hole of the bottom wall portion of the wire barrel without causing a crack in the wire barrel.
  • the present invention also provides a wire for a crimping terminal integrally including a wire barrel having a bottom wall portion and a pair of side wall portions standing on the same side from both ends in the width direction of the bottom wall portion on the rear end side of the terminal portion. Applied to the method of connecting a single wire to the barrel.
  • a recess or hole having an opening opened in a space between a pair of side wall portions of the wire barrel is provided in the bottom wall portion of the wire barrel, and the single wire is placed on the bottom wall portion of the wire barrel.
  • the wire barrel and the single wire are formed so as to form an oval shape, and the wire barrel is crimped to the single wire.
  • a part of the metal constituting the single wire is transferred to the bottom wall of the wire barrel.
  • the cross-sectional contour shape of the crimp connection portion has two sides opposed to the crimp height direction of the crimp connection portion, and is opposed to the direction orthogonal to the crimp height direction.
  • a wire barrel and a single wire are formed so as to be a hexagon having a pair of apexes.
  • the wire barrel is formed by forming the wire barrel so that the cross-sectional contour shape of the crimp connection portion is a hexagon, and therefore, the metal constituting the wire barrel is formed.
  • the crimp connection can be formed by deforming the wire barrel and the single wire.
  • connection portion between the crimp terminal and the single wire by causing a part of the single wire to bite into the recess or hole of the bottom wall portion of the wire barrel without causing a crack in the wire barrel.
  • FIG. 1 is a plan view showing an example of a punching material formed by punching a conductive plate when a crimp terminal used in the present invention is manufactured.
  • FIG. 2 is a plan view showing a crimp terminal in which a wire barrel is formed by bending the end portion of the material shown in FIG.
  • FIG. 3 is a cross-sectional view of FIG. 2 taken along the line III-III.
  • FIG. 4 is a plan view showing a connection portion between a crimp terminal and a single wire according to an embodiment of the present invention.
  • FIG. 5 is an enlarged cross-sectional view of FIG. 4 taken along line VV.
  • FIG. 1 shows an example of a punching material 10 formed by punching a conductive plate to obtain a crimp terminal.
  • the illustrated material 10 integrally includes a terminal forming portion 10a and a wire barrel forming portion 10c connected to a rear end portion of the terminal forming portion 10a via a plate-like connecting portion 10b.
  • Overhanging portions 10a1 and 10a1 projecting outward from both ends in the width direction of the terminal forming portion are formed at the rear end portion.
  • a hole 10d is formed in the center of the wire barrel forming portion 10c.
  • the illustrated crimp terminal 11 includes a terminal portion 11a formed by the terminal forming portion 10a of the punching material shown in FIG. 1, overhang portions 11a1, 11a1 formed on the rear end side of the terminal portion 11a, and a terminal portion 11a.
  • the wire barrel 11c is integrally connected to the rear end portion via a connecting portion 11b.
  • the wire barrel 11c includes a bottom wall portion 11c1 and a pair of side walls erected on the same side from both ends in the width direction of the bottom wall portion 11c1 by pressing and bending the wire barrel forming portion 10c of the punching material of FIG.
  • a hole (bottom wall portion) is formed in a U-shape having the portions 11c2 and 11c2 integrally, and has an opening opening in a space between the side wall portions 11c2 and 11c2 at the center in the width direction of the bottom wall portion 11c1.
  • 11d is formed through 11c1 in the thickness direction.
  • the illustrated terminal portion 11a is housed in a connector housing (not shown) and is used as a male contact that is brought into contact with the female contact in the mating connector housing, but is provided on the crimp terminal according to the present invention.
  • the terminal portion 11a is not limited to the illustrated example.
  • the terminal portion 11a may constitute, for example, a female contact, which has a hole or notch for inserting a lead wire and is soldered to the lead wire inserted into the hole or notch. It may be.
  • the terminal part 11a may be connected to another terminal part by a screw.
  • FIG. 4 shows a state in which the single wire 12 is connected to the above-described crimp terminal 11.
  • the single wire 12 is inserted between the side wall portions 11c2 and 11c2 of the wire barrel 11c and is disposed on the bottom wall portion 11c1 so as to overlap the hole 11d.
  • the wire barrel 11c and the single wire 12 are formed so that the single wire 12 is held inside the wire barrel 11c, and the wire barrel 11c is crimped to the single wire 12, and the single wire A part 12a of 12 is deformed so as to bite into the hole 11d of the bottom wall part 11c1 of the wire barrel 11c, and the crimp connection part 13 between the wire barrel and the single wire is formed.
  • the contour shape of the cross section of the crimp connection portion 13 has two sides a and b opposite to the direction of the crimp height h of the crimp connection portion 13. Is formed so as to have a hexagonal shape having a pair of apexes c and d opposite to the direction perpendicular to the direction of the wire barrel (opposite direction of the side wall portion of the wire barrel).
  • the crimping connection portion 13 has a pair of top sides opposed to the opposing direction of the pair of side wall portions 11c2 and 11c2 of the wire barrel, and a hexagonal prism shape having a pair of flat surfaces opposed to the crimp height h.
  • the wire barrel 11c and the single wire 12 are formed so as to exhibit the shape of
  • a step of placing the single wire 12 on the bottom wall portion 11c1 of the wire barrel is performed.
  • the wire barrel in which the single wire 12 is disposed on the bottom wall portion 11c1 has a pair of flat surfaces facing the crimp height direction (crimping direction) as shown in FIG. 11c2 and 11c2 are arranged between a pair of press dies 14 and 15 having mold surfaces 14a and 15a for forming a hexagonal column having a pair of apex sides opposed to each other.
  • a wire barrel forming step of pressing the wire barrel 11c and the single wire 12 inside the wire barrel 11 is performed by displacing and 15 in the direction in which they approach each other.
  • the wire barrel 11c and its inner side are formed such that the wire barrel 11c holds the single wire 12 inside while the tip ends of the pair of side wall portions 11c1, 11c1 are butted on the single wire 12.
  • the single wire 12 is formed, the wire barrel 11c is crimped to the single wire 12, and a part 12a of the metal constituting the single wire 12 is bitten into the hole 11d of the bottom wall portion 11c1 of the wire barrel 11c.
  • the crimp connection part 13 of the barrel 11c and the single wire is formed.
  • the cross-sectional contour shape of the crimp connection portion 13 has two sides a and b opposite to the crimp height h direction of the crimp connection portion 13 and is orthogonal to the crimp height direction.
  • the wire barrel 11c and the single wire 12 inside the wire barrel 11c are formed so as to have a hexagonal shape having a pair of apexes c and d opposed to each other.
  • the wire barrel 11c is configured.
  • the radius of curvature of the portion A (see FIG. 5) at both ends of the cross section of the single wire 12 is increased by increasing the amount of metal that escapes outward (in a direction perpendicular to the crimping direction) during the formation of the wire barrel.
  • the wire barrel 11c is deformed and crimped until the portion 12a of the single wire 12 bites into the hole 11d in the bottom wall portion of the wire barrel without applying excessive force to the wire barrel 11c.
  • the part 13 can be formed.
  • the hole 11d is provided in the bottom wall portion 11c1 of the wire barrel 11c, and a part of the single wire is bitten into the hole.
  • the thickness of the bottom wall portion 11c1 of the wire barrel is sufficiently large. If a sufficiently deep recess can be formed in the bottom wall portion 11c1 so that a part of the single wire can be formed, a recess is provided in place of the hole 11d, and a part of the single wire is placed in the recess. It is also possible to increase the tensile strength of the crimp connection part by biting in.

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

Abstract

In a method connecting a single wire to a wire barrel of a crimping terminal, a crimping connection between the wire barrel and the single wire being made by providing a concave portion or a hole on a bottom wall of the wire barrel and forming the wire barrel so as to cause the wire barrel to embrace the single wire thereinside, and crimping the wire barrel to the single wire as well as fitting a portion of the single wire into the concave portion or the hole of the bottom wall of the wire barrel. During the course of making the crimping connection, the wire barrel is so formed as the crimping connection's ultimate cross-sectional outline shape to be hexagonal, so that from a whole volume of a metal constituting the wire barrel, a volume of the metal which is forced toward outside during the formation of the wire barrel is increased, thereby preventing an excessive force to be applied to the wire barrel.

Description

単線と圧着端子との接続部及び単線と圧着端子との接続方法Connection between single wire and crimp terminal and connection method between single wire and crimp terminal
　電線に接続される圧着端子として、特許文献１に示されているように、端子部の後端部側にワイヤバレルとインシュレーションバレルとを連接したものが用いられている。ワイヤバレルは、一端が端子部の後端部につながる底壁部と該底壁部の幅方向の両端から同じ側に起立した一対の側壁部とを有するＵ字形の形状に形成されている。またインシュレーションバレルは、一端がワイヤバレルの底壁部の他端につながる底壁部と該底壁部の幅方向の両端から同じ側に起立した一対の側壁部とを有するＵ字形の形状に形成されている。 As a crimp terminal connected to an electric wire, as shown in Patent Document 1, a wire barrel and an insulation barrel connected to the rear end side of a terminal portion are used. The wire barrel is formed in a U-shape having a bottom wall portion with one end connected to the rear end portion of the terminal portion and a pair of side wall portions standing on the same side from both ends in the width direction of the bottom wall portion. The insulation barrel has a U-shape having a bottom wall portion with one end connected to the other end of the bottom wall portion of the wire barrel and a pair of side wall portions standing on the same side from both ends in the width direction of the bottom wall portion. Is formed.
　この種の圧着端子に電線を接続する際には、ワイヤバレルの底壁部の一対の側壁部の間に電線の心線を受け入れた状態で一対の側壁部を電線の心線側に湾曲させるように変形させることにより、ワイヤバレルと電線の心線とを、ワイヤバレルの内側に電線の心線が抱え込まれた形になるように成形して、ワイヤバレルと電線との圧着接続部を構成する。この圧着接続部を構成する際には、圧着端子と心線との間の電気的な導通状態を良好にし、かつワイヤバレル及び電線の心線に無理な変形を生じさせることがないように、クリンプハイト（圧着方向に測った圧着接続部の高さ）が管理される。 When connecting an electric wire to this type of crimp terminal, the pair of side wall portions are bent toward the core wire side of the electric wire in a state where the core wire of the electric wire is received between the pair of side wall portions of the bottom wall portion of the wire barrel. The wire barrel and the core wire of the electric wire are shaped so that the core wire of the electric wire is held inside the wire barrel, and the crimp connection part between the wire barrel and the electric wire is configured. To do. When configuring this crimp connection part, the electrical conduction state between the crimp terminal and the core wire is good, and so as not to cause excessive deformation in the wire barrel and the core wire of the electric wire, The crimp height (height of the crimping connection measured in the crimping direction) is managed.
　またインシュレーションバレルの一対の側壁部の間に電線の絶縁被覆で覆われた部分を配置した状態で、該一対の側壁部を電線側に湾曲させるように変形させることにより、インシュレーションバレルを、その内側に電線の絶縁被覆で覆われた部分を抱え込んだ形になるように成形して、インシュレーションバレルと電線との接続部を形成する。 In addition, in a state where the portion covered with the insulation coating of the electric wire is disposed between the pair of side walls of the insulation barrel, by deforming the pair of side walls to bend toward the electric wire, the insulation barrel is It forms so that the part covered with the insulation coating of the electric wire may be held inside, and the connection part of an insulation barrel and an electric wire is formed.
　特許文献１に示された圧着端子においては、電線が圧着端子から抜け難くして、圧着端子と電線との接続部の引っ張り強度を高めるため、インシュレーションバレルの底壁部に孔を設けて、インシュレーションバレルを変形させる際に、電線の絶縁被覆の一部をインシュレーションバレルの底壁部の孔に食い込ませるようにしている。
実開平５ー７２０５３号公報 In the crimp terminal shown in Patent Document 1, in order to increase the tensile strength of the connection portion between the crimp terminal and the electric wire, the hole is provided in the bottom wall portion of the insulation barrel. When the insulation barrel is deformed, a part of the insulation coating of the electric wire is made to bite into the hole in the bottom wall portion of the insulation barrel.
Japanese Utility Model Publication No. 5-72053
　絶縁被覆を有する電線を圧着端子に接続する場合には、特許文献１に示されているように、インシュレーションバレルの底壁部に孔を設けて、インシュレーションバレルを変形させる際に、この孔に電線の絶縁被覆を食い込ませることにより、電線と圧着端子との接続部の引っ張り強度を高めることができる。 When an electric wire having an insulation coating is connected to a crimp terminal, as shown in Patent Document 1, a hole is provided in the bottom wall portion of the insulation barrel to deform the insulation barrel. By causing the insulation coating of the electric wire to bite into, the tensile strength of the connection portion between the electric wire and the crimp terminal can be increased.
　ところが、絶縁被覆を有しない裸の単線や、マグネットワイヤのような薄い絶縁コーティングが施された単線を圧着端子に接続する場合には、特許文献１に示されたように、絶縁被覆の一部をバレルの底壁部に設けた孔に食い込ませることができないため、特許文献１に示された方法で、単線と圧着端子との接続部の引っ張り強度を高めることはできない。 However, when connecting a bare single wire without an insulation coating or a single wire with a thin insulation coating such as a magnet wire to a crimp terminal, as shown in Patent Document 1, a part of the insulation coating is used. Cannot be caused to penetrate into the hole provided in the bottom wall portion of the barrel, and therefore the tensile strength of the connecting portion between the single wire and the crimp terminal cannot be increased by the method disclosed in Patent Document 1.
　そこで、圧着端子に単線を接続する場合には、図８に示すように、底壁部１０２ａと側壁部１０２ｂ，１０２ｂとからなるワイヤバレル１０２を有する圧着端子１のワイヤバレルの底壁部１０２ａに孔１０２ｃを設けておいて、ワイヤバレルの底壁部１０２ａの上に単線２を配置した状態で、図９に示すようにワイヤバレル１０２を変形させて圧着接続部３を形成する際に、単線２を変形させて単線を構成する金属の一部２ａをワイヤバレルの底壁部の孔１０２ｃに食い込ませることにより、圧着端子１と単線２との圧着接続部の引っ張り強度を高めることが考えられる。 Therefore, when a single wire is connected to the crimp terminal, as shown in FIG. 8, the bottom wall 102a of the wire barrel of the crimp terminal 1 having the wire barrel 102 including the bottom wall 102a and the side walls 102b and 102b is provided. In the state where the hole 102c is provided and the single wire 2 is arranged on the bottom wall portion 102a of the wire barrel, the wire barrel 102 is deformed as shown in FIG. It is conceivable to increase the tensile strength of the crimp connection portion between the crimp terminal 1 and the single wire 2 by deforming 2 and causing a part 2a of the metal constituting the single wire to bite into the hole 102c in the bottom wall portion of the wire barrel. .
　このように、ワイヤバレルの底壁部に設けた孔１０２ｃに単線２を構成する金属の一部を食い込ませるためには、ワイヤバレルの底壁部に孔を有しない通常の圧着端子に単線を接続する場合に比べて、ワイヤバレル１０２及び単線２の変形量を多くして、圧着接続部３のクリンプハイトｈを低くする必要があるため、ワイヤバレルに無理な力が働いて、ワイヤバレルに亀裂が生じるおそれがある。そこで、本発明者が圧着接続部のクリンプハイトを低くするようにワイヤバレルを成形する実験を繰り返し行ったところ、図９に示すように、ワイヤバレル１０２が成形される際に押しつぶされた単線２の横断面の両端部に曲率半径が小さい部分Ａ′が生じ、この部分で、ワイヤバレルに亀裂Ｂが入って、圧着端子と単線との圧着接続部の引っ張り強度がかえって弱くなるという問題が生じることが明らかになった。 As described above, in order to cause a part of the metal constituting the single wire 2 to bite into the hole 102c provided in the bottom wall portion of the wire barrel, the single wire is connected to a normal crimp terminal having no hole in the bottom wall portion of the wire barrel. Compared to the case of connection, since it is necessary to increase the deformation amount of the wire barrel 102 and the single wire 2 and to lower the crimp height h of the crimp connection portion 3, an excessive force is applied to the wire barrel, There is a risk of cracking. Then, when this inventor repeated the experiment which shape | molds a wire barrel so that the crimp height of a crimping | compression-bonding connection part may be made low, as shown in FIG. 9, when the wire barrel 102 was shape | molded, the single wire 2 crushed A portion A ′ having a small radius of curvature is generated at both ends of the cross section of the wire, and a crack B is formed in the wire barrel, and the tensile strength of the crimp connection portion between the crimp terminal and the single wire is weakened instead. It became clear.
　本発明の目的は、圧着端子と単線との圧着接続部を形成する際にワイヤバレルに亀裂を生じさせること無く、単線の一部をワイヤバレルの底壁部に設けられた凹部または孔に食い込ませて、圧着接続部の引っ張り強度を高くすることができるようにした単線と圧着端子との接続部を提供することにある。 An object of the present invention is to cut a part of a single wire into a recess or hole provided in the bottom wall portion of the wire barrel without causing a crack in the wire barrel when forming a crimp connection portion between the crimp terminal and the single wire. Thus, an object of the present invention is to provide a connection portion between a single wire and a crimp terminal that can increase the tensile strength of the crimp connection portion.
　本発明の他の目的は、圧着端子と単線との圧着接続部を形成する際にワイヤバレルに亀裂を生じさせること無く、単線の一部をワイヤバレルの底壁部に設けられた凹部または孔に食い込ませて、圧着接続部の引っ張り強度を高くすることができるようにした単線と圧着端子との接続方法を提供することにある。 Another object of the present invention is to provide a recess or hole provided in the bottom wall portion of the wire barrel with a part of the single wire without causing a crack in the wire barrel when forming the crimp connection portion between the crimp terminal and the single wire. It is an object of the present invention to provide a method for connecting a single wire and a crimp terminal, which can be used to increase the tensile strength of the crimp connection portion.
　本発明は、底壁部と該底壁部の幅方向の両端から同じ側に起立した一対の側壁部とを有するワイヤバレルを端子部の後端部側に備えた圧着端子と単線との接続部に適用される。　本発明においては、ワイヤバレルの一対の側壁部の間のスペースに開口した開口部を有する凹部または孔が設けられる。単線は、ワイヤバレルの底壁部の凹部または孔の上に重なるように配置され、ワイヤバレルの内側に単線が抱え込まれた形になるようにワイヤバレル及び単線が成形されてワイヤバレルが単線に圧着されるとともに、単線の一部がワイヤバレルの底壁部の凹部または孔内に食い込むように変形されてワイヤバレルと単線との圧着接続部が形成される。本発明においては、特に、圧着接続部の横断面の輪郭形状が、該圧着接続部のクリンプハイトの方向に相対する２辺を有し、クリンプハイトの方向に対して直交する方向に相対する一対の頂点を有する六角形を呈するようにワイヤバレル及び単線が成形されることを特徴とする。 The present invention provides a connection between a crimp wire terminal and a single wire, each having a wire barrel having a bottom wall portion and a pair of side wall portions erected on the same side from both ends in the width direction of the bottom wall portion. Applied to the department. In the present invention, a recess or hole having an opening opened in a space between a pair of side walls of the wire barrel is provided. The single wire is arranged so as to overlap the recess or hole in the bottom wall portion of the wire barrel, and the wire barrel and the single wire are formed so that the single wire is held inside the wire barrel, and the wire barrel becomes a single wire. In addition to being crimped, a part of the single wire is deformed so as to bite into a recess or hole in the bottom wall portion of the wire barrel to form a crimp connection portion between the wire barrel and the single wire. In the present invention, in particular, the contour shape of the cross-section of the crimp connection portion has two sides opposed to the crimp height direction of the crimp connection portion, and a pair opposed to the direction orthogonal to the crimp height direction. The wire barrel and the single wire are formed to have a hexagonal shape having a plurality of vertices.
　上記のように、圧着接続部の横断面の輪郭形状を六角形とすると、ワイヤバレルを構成している金属の内、ワイヤバレルの成形の際に外側に逃げる金属の量を増やして、単線の横断面の両端の曲率半径を大きくすることができるため、ワイヤバレルに無理な力をかけることなく、単線の一部がワイヤバレルの底壁部の凹部または孔内に食い込むまで、ワイヤバレルを変形させて圧着接続部を形成することができる。従って、ワイヤバレルに亀裂を生じさせることなく、単線の一部をワイヤバレルの底壁部の凹部または孔内に食い込ませて、圧着端子と単線との接続部の引っ張り強度を高めることができる。 As described above, when the cross-sectional contour shape of the crimping connection portion is a hexagon, the amount of metal that escapes to the outside during the molding of the wire barrel among the metals constituting the wire barrel is increased. Since the radius of curvature at both ends of the cross section can be increased, the wire barrel can be deformed until a part of the single wire bites into the recess or hole in the bottom wall of the wire barrel without applying excessive force to the wire barrel. Thus, a crimp connection part can be formed. Therefore, it is possible to increase the tensile strength of the connection portion between the crimp terminal and the single wire by causing a part of the single wire to bite into the recess or hole of the bottom wall portion of the wire barrel without causing a crack in the wire barrel.
　本発明はまた、底壁部と該底壁部の幅方向の両端から同じ側に起立した一対の側壁部とを有するワイヤバレルを端子部の後端部側に一体に備えた圧着端子のワイヤバレルに単線を接続する方法に適用される。
　本発明においては、ワイヤバレルの一対の側壁部の間のスペースに開口した開口部を有する凹部または孔をワイヤバレルの底壁部に設けておいて、単線をワイヤバレルの底壁部の上に配置する工程と、底壁部の上に単線が配置されたワイヤバレルをプレス加工することにより、ワイヤバレルがその一対の側壁部の先端部を単線の上で突き合わせた状態で内側に単線を抱え込んだ形になるようにワイヤバレル及び単線を成形して、ワイヤバレルを単線に圧着するとともに、ワイヤバレル及び単線を成形する際に、単線を構成している金属の一部をワイヤバレルの底壁部の凹部または孔内に食い込ませるワイヤバレル成形工程とを行う。そして、ワイヤバレル成形工程では、圧着接続部の横断面の輪郭形状を、該圧着接続部のクリンプハイトの方向に相対する２辺を有し、クリンプハイトの方向に対して直交する方向に相対する一対の頂点を有する六角形とするようにワイヤバレル及び単線を成形する。 The present invention also provides a wire for a crimping terminal integrally including a wire barrel having a bottom wall portion and a pair of side wall portions standing on the same side from both ends in the width direction of the bottom wall portion on the rear end side of the terminal portion. Applied to the method of connecting a single wire to the barrel.
In the present invention, a recess or hole having an opening opened in a space between a pair of side wall portions of the wire barrel is provided in the bottom wall portion of the wire barrel, and the single wire is placed on the bottom wall portion of the wire barrel. Step of placing and pressing the wire barrel in which the single wire is arranged on the bottom wall portion, so that the wire barrel holds the single wire inside in a state where the tip portions of the pair of side wall portions are abutted on the single wire. The wire barrel and the single wire are formed so as to form an oval shape, and the wire barrel is crimped to the single wire. When forming the wire barrel and the single wire, a part of the metal constituting the single wire is transferred to the bottom wall of the wire barrel. A wire barrel forming step of biting into the concave portion or hole of the portion. In the wire barrel forming step, the cross-sectional contour shape of the crimp connection portion has two sides opposed to the crimp height direction of the crimp connection portion, and is opposed to the direction orthogonal to the crimp height direction. A wire barrel and a single wire are formed so as to be a hexagon having a pair of apexes.
　以上のように、本発明によれば、圧着接続部の横断面の輪郭形状を六角形とするようにワイヤバレルを成形して圧着接続部を形成するので、ワイヤバレルを構成している金属の内、ワイヤバレルの成形の際に外側に逃げる金属の量を増やして、ワイヤバレルに無理な力をかけることなく、単線の一部がワイヤバレルの底壁部の凹部または孔内に食い込むまで、ワイヤバレル及び単線を変形させて圧着接続部を形成することができる。従って、ワイヤバレルに亀裂を生じさせることなく、単線の一部をワイヤバレルの底壁部の凹部または孔内に食い込ませて、圧着端子と単線との接続部の引っ張り強度を高めることができる。 As described above, according to the present invention, the wire barrel is formed by forming the wire barrel so that the cross-sectional contour shape of the crimp connection portion is a hexagon, and therefore, the metal constituting the wire barrel is formed. Inside, increase the amount of metal that escapes to the outside when forming the wire barrel, and without applying excessive force to the wire barrel, until a part of the single wire bites into the recess or hole in the bottom wall of the wire barrel, The crimp connection can be formed by deforming the wire barrel and the single wire. Therefore, it is possible to increase the tensile strength of the connection portion between the crimp terminal and the single wire by causing a part of the single wire to bite into the recess or hole of the bottom wall portion of the wire barrel without causing a crack in the wire barrel.
図１は本発明で用いる圧着端子を製作する際に、導電板を打ち抜くことにより形成された打ち抜き素材の一例を示した平面図である。FIG. 1 is a plan view showing an example of a punching material formed by punching a conductive plate when a crimp terminal used in the present invention is manufactured. 図２は図１の素材の端部に折り曲げ加工を施してワイヤバレルを形成した圧着端子を示した平面図である。FIG. 2 is a plan view showing a crimp terminal in which a wire barrel is formed by bending the end portion of the material shown in FIG. 図３は図２をIII－III線に沿って断面して示した断面図である。FIG. 3 is a cross-sectional view of FIG. 2 taken along the line III-III. 図４は本発明の一実施形態に係わる圧着端子と単線との接続部を示した平面図である。FIG. 4 is a plan view showing a connection portion between a crimp terminal and a single wire according to an embodiment of the present invention. 図４をV－V線に沿って断面して示した拡大断面図である。FIG. 5 is an enlarged cross-sectional view of FIG. 4 taken along line VV. 本発明の一実施形態において、ワイヤバレルを成形する際にワイヤバレルと単線とをプレス型内に配置した状態を示した断面図である。In one Embodiment of this invention, when shape | molding a wire barrel, it is sectional drawing which showed the state which has arrange | positioned the wire barrel and the single wire in the press die. 本発明の一実施形態において、ワイヤバレル及び単線をプレス加工により成形した状態を示した断面図である。In one Embodiment of this invention, it is sectional drawing which showed the state which shape | molded the wire barrel and the single wire by press work. 本発明の一実施形態において、圧着端子のワイヤバレルに単線を挿入した状態を示した断面図である。In one Embodiment of this invention, it is sectional drawing which showed the state which inserted the single wire into the wire barrel of the crimp terminal. 図８のワイヤバレルと単線とを、従来の圧着端子と単線との圧着接続部と同様の形状の圧着接続部を得るようにプレス成形した状態を模式的に示した断面図である。It is sectional drawing which showed typically the state which press-molded the wire barrel and single wire of FIG. 8 so that the crimp connection part of the shape similar to the crimp connection part of the conventional crimp terminal and single wire might be obtained.
符号の説明Explanation of symbols
　１１　圧着端子
　１１ａ　端子部
　１１ｃ　ワイヤバレル
　１１c1　底壁部
　１１c2　側壁部
　１１ｄ　孔
　１２　単線
　１３　圧着接続部 DESCRIPTION OF SYMBOLS 11 Crimp terminal 11a Terminal part 11c Wire barrel 11c1 Bottom wall part 11c2 Side wall part 11d Hole 12 Single wire 13 Crimp connection part
　図１ないし図７を参照して本発明の一実施形態を説明する。図１は、圧着端子を得るために導電板を打ち抜くことにより形成された打ち抜き素材１０の一例を示したものである。図示の素材１０は、端子形成部１０ａと、端子形成部１０ａの後端部に板状の連結部１０ｂを介して連結されたワイヤバレル形成部１０ｃとを一体に有し、端子形成部１０ａの後端部には、該端子形成部の幅方向の両端から外側に張り出した張出部１０a1，１０a1が形成されている。ワイヤバレル形成部１０ｃの中央部には孔１０ｄが形成されている。 An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows an example of a punching material 10 formed by punching a conductive plate to obtain a crimp terminal. The illustrated material 10 integrally includes a terminal forming portion 10a and a wire barrel forming portion 10c connected to a rear end portion of the terminal forming portion 10a via a plate-like connecting portion 10b. Overhanging portions 10a1 and 10a1 projecting outward from both ends in the width direction of the terminal forming portion are formed at the rear end portion. A hole 10d is formed in the center of the wire barrel forming portion 10c.
　図２及び図３は、図１の打ち抜き素材を成形して形成した圧着端子１１を示している。図示の圧着端子１１は、図１の打ち抜き素材の端子形成部１０ａにより構成された端子部１１ａと、端子部１１ａの後端部側に形成された張出部１１a1，１１a1と、端子部１１ａの後端部に連結部１１ｂを介して一体に連結されたワイヤバレル１１ｃとからなっている。ワイヤバレル１１ｃは、図１の打ち抜き素材のワイヤバレル形成部１０ｃをプレス加工して折り曲げることにより、底壁部１１c1と、該底壁部１１c1の幅方向の両端から同じ側に起立した一対の側壁部１１c2，１１c2とを一体に有するＵ字形の形状に形成され、底壁部１１c1の幅方向の中央には、側壁部１１c2，１１c2の間のスペースに開口した開口部を有する孔(底壁部１１c1を厚み方向に貫通した孔）１１ｄが形成されている。 2 and 3 show a crimp terminal 11 formed by molding the punching material of FIG. The illustrated crimp terminal 11 includes a terminal portion 11a formed by the terminal forming portion 10a of the punching material shown in FIG. 1, overhang portions 11a1, 11a1 formed on the rear end side of the terminal portion 11a, and a terminal portion 11a. The wire barrel 11c is integrally connected to the rear end portion via a connecting portion 11b. The wire barrel 11c includes a bottom wall portion 11c1 and a pair of side walls erected on the same side from both ends in the width direction of the bottom wall portion 11c1 by pressing and bending the wire barrel forming portion 10c of the punching material of FIG. A hole (bottom wall portion) is formed in a U-shape having the portions 11c2 and 11c2 integrally, and has an opening opening in a space between the side wall portions 11c2 and 11c2 at the center in the width direction of the bottom wall portion 11c1. 11d) is formed through 11c1 in the thickness direction.
　図示の端子部１１ａは、図示しないコネクタのハウジング内に収容されて、相手方コネクタのハウジング内の雌形接触子に接触させられる雄形接触子として用いられるが、本発明に係わる圧着端子に設けられる端子部１１ａは、図示の例に限定されない。端子部１１ａは、例えば、雌形接触子を構成するものでもよく、リード線を挿入するための孔や切り欠きを備えて、該孔や切り欠きに挿入されたリード線に半田付けされるものであってもよい。また端子部１１ａは、ネジにより他の端子部に接続されるものでもよい。 The illustrated terminal portion 11a is housed in a connector housing (not shown) and is used as a male contact that is brought into contact with the female contact in the mating connector housing, but is provided on the crimp terminal according to the present invention. The terminal portion 11a is not limited to the illustrated example. The terminal portion 11a may constitute, for example, a female contact, which has a hole or notch for inserting a lead wire and is soldered to the lead wire inserted into the hole or notch. It may be. Moreover, the terminal part 11a may be connected to another terminal part by a screw.
　図４は、上記の圧着端子１１に単線１２を接続した状態を示している。単線１２を圧着端子１１に接続する際には、単線１２がワイヤバレル１１ｃの側壁部１１c2，１１c2の間に挿入されて、孔１１ｄの上に重なるようにして底壁部１１c1の上に配置され、図５に示したように、ワイヤバレル１１ｃの内側に単線１２が抱え込まれた形になるようにワイヤバレル１１ｃと単線１２とが成形されてワイヤバレル１１ｃが単線１２に圧着されるとともに、単線１２の一部１２ａがワイヤバレル１１ｃの底壁部１１c1の孔１１ｄ内に食い込むように変形されて、ワイヤバレルと単線との圧着接続部１３が形成される。 FIG. 4 shows a state in which the single wire 12 is connected to the above-described crimp terminal 11. When connecting the single wire 12 to the crimp terminal 11, the single wire 12 is inserted between the side wall portions 11c2 and 11c2 of the wire barrel 11c and is disposed on the bottom wall portion 11c1 so as to overlap the hole 11d. As shown in FIG. 5, the wire barrel 11c and the single wire 12 are formed so that the single wire 12 is held inside the wire barrel 11c, and the wire barrel 11c is crimped to the single wire 12, and the single wire A part 12a of 12 is deformed so as to bite into the hole 11d of the bottom wall part 11c1 of the wire barrel 11c, and the crimp connection part 13 between the wire barrel and the single wire is formed.
　本発明においては、圧着接続部１３を形成する際に、圧着接続部１３の横断面の輪郭形状が圧着接続部１３のクリンプハイトｈの方向に相対する２辺ａ，ｂを有し、クリンプハイトの方向に対して直交する方向（ワイヤバレルの側壁部の対向方向）に相対する一対の頂点ｃ，ｄを有する六角形を呈するように成形する。換言すると、圧着接続部１３が、ワイヤバレルの一対の側壁部１１c2，１１c2の対向方向に相対する一対の頂辺を有し、そのクリンプハイトｈの方向に相対する一対の平坦面を有する六角柱状の形状を呈するように、ワイヤバレル１１ｃ及び単線１２を成形する。 In the present invention, when the crimp connection portion 13 is formed, the contour shape of the cross section of the crimp connection portion 13 has two sides a and b opposite to the direction of the crimp height h of the crimp connection portion 13. Is formed so as to have a hexagonal shape having a pair of apexes c and d opposite to the direction perpendicular to the direction of the wire barrel (opposite direction of the side wall portion of the wire barrel). In other words, the crimping connection portion 13 has a pair of top sides opposed to the opposing direction of the pair of side wall portions 11c2 and 11c2 of the wire barrel, and a hexagonal prism shape having a pair of flat surfaces opposed to the crimp height h. The wire barrel 11c and the single wire 12 are formed so as to exhibit the shape of
　本発明に係わる単線と圧着端子との接続方法においては、先ず単線１２をワイヤバレルの底壁部１１c1の上に配置する工程を行う。次いで、底壁部１１c1の上に単線１２が配置されたワイヤバレルを、図６に示すように、クリンプハイトの方向（圧着方向）に相対する一対の平坦面を有し、ワイヤバレルの側壁部１１c2，１１c2の対向方向に相対する１対の頂辺を有する六角柱を成形するための型面１４ａ及び１５ａを備えた一対のプレス金型１４及び１５の間に配置して、プレス金型１４及び１５を互いに接近させる方向に変位させることにより、図７に示すように、ワイヤバレル１１ｃとその内側の単線１２とをプレス加工するワイヤバレル成形工程を行う。 In the method of connecting a single wire and a crimp terminal according to the present invention, first, a step of placing the single wire 12 on the bottom wall portion 11c1 of the wire barrel is performed. Next, the wire barrel in which the single wire 12 is disposed on the bottom wall portion 11c1 has a pair of flat surfaces facing the crimp height direction (crimping direction) as shown in FIG. 11c2 and 11c2 are arranged between a pair of press dies 14 and 15 having mold surfaces 14a and 15a for forming a hexagonal column having a pair of apex sides opposed to each other. As shown in FIG. 7, a wire barrel forming step of pressing the wire barrel 11c and the single wire 12 inside the wire barrel 11 is performed by displacing and 15 in the direction in which they approach each other.
　ワイヤバレル成形工程では、ワイヤバレル１１ｃがその一対の側壁部１１c1，１１c1の先端部を単線１２の上で突き合わせた状態で内側に単線１２を抱え込んだ形になるように、ワイヤバレル１１ｃ及びその内側の単線１２を成形して、ワイヤバレル１１ｃを単線１２に圧着するとともに、単線１２を構成している金属の一部１２ａをワイヤバレル１１ｃの底壁部１１c1の孔１１ｄ内に食い込ませて、ワイヤバレル１１ｃと単線との圧着接続部１３を形成する。このワイヤバレル成形工程では、圧着接続部１３の横断面の輪郭形状を、圧着接続部１３のクリンプハイトｈの方向に相対する２辺ａ，ｂを有し、クリンプハイトの方向に対して直交する方向に相対する一対の頂点ｃ，ｄを有する六角形を呈するようにワイヤバレル１１ｃとその内側の単線１２とを成形する。 In the wire barrel forming process, the wire barrel 11c and its inner side are formed such that the wire barrel 11c holds the single wire 12 inside while the tip ends of the pair of side wall portions 11c1, 11c1 are butted on the single wire 12. The single wire 12 is formed, the wire barrel 11c is crimped to the single wire 12, and a part 12a of the metal constituting the single wire 12 is bitten into the hole 11d of the bottom wall portion 11c1 of the wire barrel 11c. The crimp connection part 13 of the barrel 11c and the single wire is formed. In this wire barrel forming process, the cross-sectional contour shape of the crimp connection portion 13 has two sides a and b opposite to the crimp height h direction of the crimp connection portion 13 and is orthogonal to the crimp height direction. The wire barrel 11c and the single wire 12 inside the wire barrel 11c are formed so as to have a hexagonal shape having a pair of apexes c and d opposed to each other.
　上記のように、圧着接続部の横断面の輪郭形状を、クリンプハイトの方向に対して直交する方向に相対する一対の頂点ｃ，ｄを有する六角形とすると、ワイヤバレル１１ｃを構成している金属の内、ワイヤバレルの成形の際に外側に（圧着方向に対して直角な方向に）逃げる金属の量を増やして、単線１２の横断面の両端の部分Ａ（図５参照）の曲率半径を大きくすることができるため、ワイヤバレル１１ｃに無理な力をかけることなく、単線１２の一部１２ａがワイヤバレルの底壁部の孔１１ｄ内に食い込むまで、ワイヤバレル１１ｃを変形させて圧着接続部１３を形成することができる。従って、ワイヤバレル１１ｃに亀裂を生じさせることなく、単線１２の一部１２ａをワイヤバレルの底壁部の孔１１ｄ内に食い込ませて、圧着端子１１と単線１２との接続部の引っ張り強度を高めることができる。 As described above, when the contour shape of the cross section of the crimping connection portion is a hexagon having a pair of apexes c and d that are opposed to the direction of the crimp height, the wire barrel 11c is configured. The radius of curvature of the portion A (see FIG. 5) at both ends of the cross section of the single wire 12 is increased by increasing the amount of metal that escapes outward (in a direction perpendicular to the crimping direction) during the formation of the wire barrel. The wire barrel 11c is deformed and crimped until the portion 12a of the single wire 12 bites into the hole 11d in the bottom wall portion of the wire barrel without applying excessive force to the wire barrel 11c. The part 13 can be formed. Therefore, a part 12a of the single wire 12 is bitten into the hole 11d in the bottom wall portion of the wire barrel without causing a crack in the wire barrel 11c, and the tensile strength of the connection portion between the crimp terminal 11 and the single wire 12 is increased. be able to.
　上記の実施形態では、ワイヤバレル１１ｃの底壁部１１c1に孔１１ｄを設けて、この孔内に単線の一部を食い込ませるようにしたが、ワイヤバレルの底壁部１１c1の厚さが十分にあって、底壁部１１c1に単線の一部を食い込ませることができる十分に深い凹部を形成できる場合には、上記の孔１１ｄに代えて凹部を設けて、単線の一部を該凹部内に食い込ませることにより、圧着接続部の引っ張り強度を高めるようにすることもできる。 In the above embodiment, the hole 11d is provided in the bottom wall portion 11c1 of the wire barrel 11c, and a part of the single wire is bitten into the hole. However, the thickness of the bottom wall portion 11c1 of the wire barrel is sufficiently large. If a sufficiently deep recess can be formed in the bottom wall portion 11c1 so that a part of the single wire can be formed, a recess is provided in place of the hole 11d, and a part of the single wire is placed in the recess. It is also possible to increase the tensile strength of the crimp connection part by biting in.

Claims (2)

  1. 　底壁部と該底壁部の幅方向の両端から同じ側に起立した一対の側壁部とを有するワイヤバレルを端子部の後端部側に備えた圧着端子と単線との接続部において、
    　前記ワイヤバレルの底壁部に、前記一対の側壁部の間のスペースに開口した開口部を有する凹部または孔が設けられ、
    　前記単線は、前記ワイヤバレルの底壁部の凹部または孔の上に重なるように配置され、　前記ワイヤバレルの内側に前記単線が抱え込まれた形になるように前記ワイヤバレルと単線とが成形されて前記ワイヤバレルが前記単線に圧着されるとともに、前記単線の一部が前記ワイヤバレルの底壁部の凹部または孔内に食い込むように変形されて前記ワイヤバレルと単線との圧着接続部が形成され、
    　前記圧着接続部の横断面の輪郭形状が、該圧着接続部のクリンプハイトの方向に相対する２辺を有し、クリンプハイトの方向に対して直交する方向に相対する一対の頂点を有する六角形を呈するように前記ワイヤバレル及び単線が成形されている、
    　圧着端子と単線との接続部。     In the connection part between the crimp terminal and the single wire provided with the wire barrel having the bottom wall part and the pair of side wall parts standing on the same side from both ends in the width direction of the bottom wall part on the rear end part side of the terminal part,
    A recess or hole having an opening opened in a space between the pair of side wall portions is provided on the bottom wall portion of the wire barrel,
    The single wire is disposed so as to overlap a recess or hole in a bottom wall portion of the wire barrel, and the wire barrel and the single wire are formed so that the single wire is held inside the wire barrel. The wire barrel is crimped to the single wire, and a part of the single wire is deformed so as to bite into a recess or hole in the bottom wall portion of the wire barrel to form a crimp connection portion between the wire barrel and the single wire. And
    The contour shape of the cross-section of the crimp connection portion has two sides opposite to the crimp height direction of the crimp connection portion, and a hexagon having a pair of vertices opposite to the direction perpendicular to the crimp height direction. The wire barrel and the single wire are molded to present
    Connection between crimp terminal and single wire.
  2. 　底壁部と該底壁部の幅方向の両端から同じ側に起立した一対の側壁部とを有するワイヤバレルを端子部の後端部側に一体に備えた圧着端子の前記ワイヤバレルに単線を接続する方法において、
    　前記ワイヤバレルの一対の側壁部の間のスペースに開口した開口部を有する凹部または孔を前記ワイヤバレルの底壁部に設けておき、
    　前記単線を前記ワイヤバレルの底壁部の上に配置する工程と、
    　底壁部の上に単線が配置されたワイヤバレルをプレス加工することにより、前記ワイヤバレルが前記一対の側壁部の先端部を前記単線の上で突き合わせた状態で内側に前記単線を抱え込んだ形になるように前記ワイヤバレル及び単線を成形して、前記ワイヤバレルを前記単線に圧着するとともに、前記ワイヤバレル及び単線を成形する際に前記単線を構成している金属の一部を前記ワイヤバレルの底壁部の凹部または孔内に食い込ませるワイヤバレル成形工程とを行い、
    　前記ワイヤバレル成形工程では、前記圧着接続部の横断面の輪郭形状を、該圧着接続部のクリンプハイトの方向に相対する２辺を有し、クリンプハイトの方向に対して直交する方向に相対する一対の頂点を有する六角形とするように前記ワイヤバレル及び単線を成形する、
    　圧着端子と単線との接続方法。     A single wire is connected to the wire barrel of the crimping terminal integrally provided on the rear end side of the terminal portion with a wire barrel having a bottom wall portion and a pair of side wall portions standing on the same side from both ends in the width direction of the bottom wall portion. In the connection method,
    A recess or hole having an opening opened in a space between a pair of side walls of the wire barrel is provided in the bottom wall of the wire barrel,
    Placing the single wire on the bottom wall of the wire barrel;
    By pressing a wire barrel in which a single wire is arranged on the bottom wall portion, the wire barrel holds the single wire inside in a state where the tip portions of the pair of side wall portions are abutted on the single wire. The wire barrel and the single wire are formed so that the wire barrel is crimped to the single wire, and a part of the metal constituting the single wire is formed when the wire barrel and the single wire are formed. And a wire barrel molding process to bite into the recess or hole in the bottom wall of the
    In the wire barrel forming step, the cross-sectional contour shape of the crimp connection portion has two sides that are opposed to the crimp height direction of the crimp connection portion, and is opposed to the direction orthogonal to the crimp height direction. Forming the wire barrel and single wire to a hexagon having a pair of vertices;
    Connection method between crimp terminal and single wire.
PCT/JP2007/075164 2007-12-27 2007-12-27 Connection between single wire and crimping terminal, and connecting method between single wire and crimping terminal WO2009084090A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0572053U (en) * 1992-01-08 1993-09-28 日本エー・エム・ピー株式会社 Wire crimp terminal
JP2006286385A (en) * 2005-03-31 2006-10-19 Asahi Electric Works Ltd Crimped connection structure of terminal fitting and stranded wire

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0572053U (en) * 1992-01-08 1993-09-28 日本エー・エム・ピー株式会社 Wire crimp terminal
JP2006286385A (en) * 2005-03-31 2006-10-19 Asahi Electric Works Ltd Crimped connection structure of terminal fitting and stranded wire

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