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WO2015053268A1 - Crimped terminal and swaging jig for crimped terminal - Google Patents

Crimped terminal and swaging jig for crimped terminal Download PDF

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Publication number
WO2015053268A1
WO2015053268A1 PCT/JP2014/076816 JP2014076816W WO2015053268A1 WO 2015053268 A1 WO2015053268 A1 WO 2015053268A1 JP 2014076816 W JP2014076816 W JP 2014076816W WO 2015053268 A1 WO2015053268 A1 WO 2015053268A1
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WO
WIPO (PCT)
Prior art keywords
crimping
core wire
wire
core
caulking
Prior art date
Application number
PCT/JP2014/076816
Other languages
French (fr)
Japanese (ja)
Inventor
準弥 篠原
Original Assignee
矢崎総業株式会社
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Filing date
Publication date
Application filed by 矢崎総業株式会社 filed Critical 矢崎総業株式会社
Publication of WO2015053268A1 publication Critical patent/WO2015053268A1/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
    • 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
    • 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
    • H01R4/188—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 having an uneven wire-receiving surface to improve the contact
    • 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
    • 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 a crimp terminal for connecting to an electric wire and a crimping jig for crimping the crimp terminal.
  • Patent Document 1 There is one disclosed in Patent Document 1 as a conventional crimp terminal of this type.
  • the electric wire W connected to the crimp terminal 110 of the conventional example includes a core wire 101 composed of a plurality of strands 101 a and an insulating sheath 102 covering the outer periphery of the core wire 101.
  • the insulating sheath 102 is removed, and the core wire 101 is exposed.
  • the crimp terminal 110 includes a mating terminal connection portion 111 and a wire connection portion 115.
  • the wire connection portion 115 includes a core wire crimping portion 116 and an outer skin crimping portion 117.
  • the core wire crimping part 116 includes a base part 116a and a pair of caulking piece parts 116b extending from both sides of the base part 116a.
  • Three long grooves (serrations) 118 are formed on the inner surfaces of the base portion 116 a and the pair of caulking pieces 116 b of the core wire crimping portion 116.
  • the outer skin crimping part 117 includes a base part 117a and a pair of caulking piece parts 117b extending from both sides of the base part 117a.
  • the crimp terminal 110 crimps and crimps the core wire 101 exposed by the core wire crimping portion 116, and crimps and crimps the insulating sheath 102 by the outer skin crimping portion 117.
  • the crimping and crimping uses a wire crimper 120 as shown in FIGS. 8 (a) and 8 (b).
  • the wire crimper 120 has a caulking groove 121 having a final caulking outer peripheral shape on the caulking tip side.
  • 9 (a) and 9 (b) the crimping is performed by pressing the pair of crimping pieces 116b with the wire crimper 120 and plastically deforming the pair of crimping pieces 116b.
  • JP 2009-123623 A JP 2009-123623 A
  • the core wire 101 receives a crimping force from the caulking piece portion 116b. Then, as shown in FIG. 9B, the core wire 101 can freely extend in either the left or right direction (a arrow direction and b arrow direction in FIG. 9B). Generally, the core wire 101 located on the distal end side of the crimping piece portion 116b extends to the distal end side (in the direction of arrow a in FIG. 9B), and the rear end side (insulating outer skin side) of the crimping piece portion 116b. The core wire 101 located on the side extends to the rear end side (insulating outer skin side) (in the direction of arrow b in FIG. 9B).
  • the core wire 101 freely expands and contracts, the crimping force does not effectively act on each strand 101a of the core wire 101.
  • the strand 101a generates a new surface when stretched, it receives only a low compressive force, and therefore cannot effectively generate adhesion. If adhesion does not occur or if adhesion is insufficient, there is a problem that the electrical connection characteristics between the strands 101a are not improved and the electrical resistance at the electrical connection point is increased.
  • the present invention has been made to solve the above-described problems, and provides a crimp terminal that can reduce electrical resistance at an electrical connection location with an electric wire, and a crimping jig that uses the crimp terminal for processing. For the purpose.
  • the crimp terminal according to the first aspect of the present invention includes a core crimping portion that can be crimped to a core consisting of a plurality of strands of an electric wire.
  • the core wire crimping portion is crimped by increasing the height of the central portion located in the center of the core wire in the axial direction and decreasing the height of both side portions located on both sides of the central portion.
  • the core wire may be made of aluminum.
  • the crimping jig of the crimp terminal according to the second aspect of the present invention has a crimping groove, and plastically deforms the core wire crimping portion along the crimping groove to form a core wire composed of a plurality of strands of the electric wire.
  • a crimp terminal capable of crimping and crimping a core wire crimping portion is crimped to the core wire, and includes a first crimping groove for crimping the center portion of the core wire crimping portion and the center portion of the core wire crimping portion.
  • second caulking grooves for caulking both side portions located on both sides of the. The height position of the first caulking groove is set higher than the height position of the second caulking groove.
  • a compressive force acts on the core wire, so that a new surface is generated as each strand extends.
  • the core wire is caulked low at locations on both sides of the core wire crimping portion, but can be freely extended so as to escape to the outside of the core wire crimp portion, while at the center portion of the core wire crimp portion, The low-crimped core wire on both sides suppresses axial elongation, and compressive force acts efficiently on the core wire.
  • FIG. 1 is a perspective view of a state before an electric wire is crimped to a crimp terminal according to the embodiment.
  • Fig.2 (a) is a side view of the state after crimping
  • FIG.2 (b) is a principal part enlarged view of Fig.2 (a).
  • 3A is a cross-sectional view taken along the line AA in FIG. 2A
  • FIG. 3B is a cross-sectional view taken along the line BB in FIG. 2A.
  • 4A is a front view of both ends of the caulking jig according to the embodiment
  • FIG. 4B is a front view of the central portion of the caulking jig according to the embodiment
  • FIG. 4C is the embodiment. It is a side view of the crimping jig which concerns on.
  • Fig.5 (a) is a front view which shows the crimping process by the crimping jig which concerns on embodiment
  • FIG.5 (b) is a side view which shows the crimping process by the crimping jig which concerns on embodiment.
  • FIG. 6 is a perspective view of a state before a wire is crimped to a conventional crimp terminal.
  • FIG. 7 is a side view of a state after a wire is crimped to a crimp terminal of a conventional example.
  • FIG. 8A is a front view of a conventional crimping jig
  • FIG. 8B is a side view of the conventional crimping jig.
  • FIG. 9A is a front view showing a caulking process using a conventional caulking jig
  • FIG. 9B is a side view showing the caulking process using the caulking jig of the conventional example.
  • the electric wire W includes a core wire 1 composed of a plurality of strands 1 a and an insulating sheath 2 that covers the outer periphery of the core wire 1. At the tip end side of the electric wire W, the insulating sheath 2 is removed, and the core wire 1 is exposed.
  • the core wire 1 the strands 1a made from aluminum or aluminum alloy (henceforth aluminum) are mutually twisted. That is, the electric wire W is an aluminum electric wire.
  • the crimp terminal 10 is made of, for example, a copper alloy, and is formed by bending a plate cut into a predetermined shape.
  • the crimp terminal 10 includes a mating terminal connection portion 11 and a wire connection portion 15.
  • the wire connection portion 15 includes a core wire crimping portion 16 and an outer skin crimping portion 17.
  • the core wire crimping portion 16 includes a base portion 16a and a pair of caulking piece portions 16b extending from both sides of the base portion 16a. As shown in detail in FIG. 2B, the core wire crimping portion 16 is crimped by increasing the height h1 of the central portion E2 in the axial direction of the core wire 1 and decreasing the height h2 of the left and right side portions E1, E3. Yes.
  • the core wire crimping portion 16 has a central portion E2 positioned at the center in the axial direction of the core wire 1 having a high height, that is, both side portions E1 positioned on both sides of the central portion E2 by being caulked with a weak force.
  • E3 has a low height, that is, it is crimped with a strong force.
  • a large number of round grooves 18 are formed on the inner surface of the base portion 16a of the core wire crimping portion 16 and the pair of caulking piece portions 16b.
  • the outer skin crimping portion 17 includes a base portion 17a and a pair of caulking piece portions 17b extending from both sides of the base portion 17a.
  • the crimp terminal 10 crimps and crimps the core wire 1 exposed by the core wire crimping portion 16, and crimps and crimps the insulating sheath 2 by the outer skin crimping portion 17.
  • the crimp terminal 10 is crimped by a crimping jig 20 shown in FIG.
  • the caulking jig 20 includes a wire crimper 21 that can move up and down, and an anvil 22 disposed below the wire crimper 21.
  • the wire crimper 21 includes a left crimper 21A, a central crimper 21B, and a right crimper 21C that are divided from each other. The left crimper 21A, the central crimper 21B, and the right crimper 21C are moved up and down together.
  • the left crimper 21A, the central crimper 21B, and the right crimper 21C have final crimped outer circumferential crimping grooves 21a, 21b, and 21c, respectively, at their lower portions (caulking tip side).
  • the central crimper 21 ⁇ / b> B caulks the central part E ⁇ b> 2 of the core wire crimping part 16.
  • the left crimper 21 ⁇ / b> A and the right crimper 21 ⁇ / b> C caulk both side parts E ⁇ b> 1 and E ⁇ b> 3 located on both sides of the center part E ⁇ b> 2 of the core wire crimping part 16.
  • the height positions (depths) of the crimping grooves 21a and 21c of the left crimper 21A and the right crimper 21C are set lower (shallow) than the height position (depth) of the crimping groove 21b of the central crimper 21B. .
  • the core wire crimping portion 16 has a height h1 of the central portion E2 in the axial direction of the core wire 1 and is increased between the side portions E1 and E3 located on the left and right outer sides of the central portion. The height h2 is caulked low.
  • a compressive force acts on the core wire 1, so that a new surface is generated when each strand 1 a extends.
  • the core wire 1 is caulked low at the positions of both side portions E1 and E3 of the core wire crimping portion 16, but outside the core wire crimping portion 16 (a arrow direction, b arrow direction). It is possible to stretch towards.
  • both side portions E1 and E3 are crimped low, so that the axial extension is suppressed and the compressive force acts on the core wire 1 efficiently.
  • adhesion occurs due to the generation of a new surface due to the extension of each strand 1a and the action of an efficient compressive force on each strand 1a. This improves the conduction characteristics. From the above, the electrical resistance at the electrical connection point is reduced.
  • a groove (serration) 18 is provided on the inner surface of the core wire crimping portion 16. Since the element wire 1a of the core wire 1 is deformed so as to enter into the groove 18, that is, is deformed by extension, a new surface is generated, and adhesion is generated by receiving a compressive force. Therefore, between the core wire 1 and the core wire crimping portion 16 The conduction resistance is reduced and the conduction resistance between the strands 1a is reduced. This also makes it possible to reduce the electrical resistance at the electrical connection point.
  • Core wire 1 is made of aluminum.
  • the aluminum strand 1a has a thicker oxide film on the surface than the copper alloy. Therefore, the aluminum core wire 1 has a problem of an increase in electrical resistance due to the conduction resistance between the strands 1a.
  • the conduction resistance between the strands 1a can be reduced by the occurrence of adhesion, Effective for aluminum wires.
  • the aluminum core wire 1 is softer and more easily stretched than a copper alloy product, but as described above, it can suppress the elongation of the core wire 1 at the center portion E2 of the core wire crimping portion 16 and cause adhesion. Therefore, the embodiment is particularly effective for crimping an aluminum electric wire from this viewpoint.
  • the wire crimper 21 of the crimping jig 20 includes the left crimper 21A, the central crimper 21B, and the right crimper 21C that are divided from each other, but may be an integral block body.
  • a new surface is generated due to the elongation of each strand, and adhesion occurs due to efficient compression force acting on each strand. It is possible to provide a crimping terminal that improves the electrical conduction characteristics between them and a crimping jig that crimps the crimping terminal.

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

Abstract

This crimped terminal (10) is provided with a core wire crimping section (16) that can be swaged/crimped to a core wire (1) comprising a plurality of wire strands (1a) of an electrical wire (W). The core wire crimping section (16) is swaged in a manner such that the height of the center (E2) positioned at the center in the axial direction of the core wire (1) is higher and the height of both sides (E1, E3) positioned at both sides of the center (E2) is lower.

Description

圧着端子及び圧着端子の加締治具Crimp terminal and crimping jig for crimp terminal
　本発明は、電線に接続するための圧着端子、及び、その圧着端子を加締めるための加締治具に関する。 The present invention relates to a crimp terminal for connecting to an electric wire and a crimping jig for crimping the crimp terminal.
　この種の従来例の圧着端子として、特許文献１に開示されたものがある。図６、７に示すように、従来例の圧着端子１１０に接続される電線Ｗは、複数の素線１０１ａからなる芯線１０１と、芯線１０１の外周を覆う絶縁外皮１０２とを備える。電線Ｗの先端側は、絶縁外皮１０２が除去されて、芯線１０１が露出されている。 There is one disclosed in Patent Document 1 as a conventional crimp terminal of this type. As shown in FIGS. 6 and 7, the electric wire W connected to the crimp terminal 110 of the conventional example includes a core wire 101 composed of a plurality of strands 101 a and an insulating sheath 102 covering the outer periphery of the core wire 101. At the tip end side of the electric wire W, the insulating sheath 102 is removed, and the core wire 101 is exposed.
　圧着端子１１０は、相手端子接続部１１１と、電線接続部１１５とを備える。電線接続部１１５は、芯線圧着部１１６と、外皮圧着部１１７とを備える。芯線圧着部１１６は、基底部１１６ａと、この基底部１１６ａの両側から延設された一対の加締め片部１１６ｂとを備える。芯線圧着部１１６の基底部１１６ａと一対の加締め片部１１６ｂの内面には、三本の長溝（セレーション）１１８が形成されている。外皮圧着部１１７は、基底部１１７ａと、この基底部１１７ａの両側から延設された一対の加締め片部１１７ｂとを備える。 The crimp terminal 110 includes a mating terminal connection portion 111 and a wire connection portion 115. The wire connection portion 115 includes a core wire crimping portion 116 and an outer skin crimping portion 117. The core wire crimping part 116 includes a base part 116a and a pair of caulking piece parts 116b extending from both sides of the base part 116a. Three long grooves (serrations) 118 are formed on the inner surfaces of the base portion 116 a and the pair of caulking pieces 116 b of the core wire crimping portion 116. The outer skin crimping part 117 includes a base part 117a and a pair of caulking piece parts 117b extending from both sides of the base part 117a.
　圧着端子１１０は、芯線圧着部１１６によって露出された芯線１０１を加締め圧着し、外皮圧着部１１７によって絶縁外皮１０２を加締め圧着している。 The crimp terminal 110 crimps and crimps the core wire 101 exposed by the core wire crimping portion 116, and crimps and crimps the insulating sheath 102 by the outer skin crimping portion 117.
　ところで、従来例では、加締め圧着は、図８（ａ）、８（ｂ）に示すようなワイヤクリンパ１２０を使用する。ワイヤクリンパ１２０は、その加締め先端側に最終的な加締め外周形状の加締め溝１２１を有する。そして、図９（ａ）、９（ｂ）に示すように、加締め圧着は、ワイヤクリンパ１２０で一対の加締め片部１１６ｂを押圧し、一対の加締め片部１１６ｂを塑性変形することにより行う。 Incidentally, in the conventional example, the crimping and crimping uses a wire crimper 120 as shown in FIGS. 8 (a) and 8 (b). The wire crimper 120 has a caulking groove 121 having a final caulking outer peripheral shape on the caulking tip side. 9 (a) and 9 (b), the crimping is performed by pressing the pair of crimping pieces 116b with the wire crimper 120 and plastically deforming the pair of crimping pieces 116b. Do.
特開２００９－１２３６２３号公報(JP 2009-123623 A)JP 2009-123623 A (JP 2009-123623 A)
　上述した加締め過程では、加締め片部１１６ｂより芯線１０１が圧着力を受ける。すると、図９（ｂ）に示すように、芯線１０１が左右いずれの方向（図９（ｂ）のａ矢印方向とｂ矢印方向）にも自由に伸びることができる。一般的には、加締め片部１１６ｂの先端側に位置する芯線１０１は、先端側（図９（ｂ）のａ矢印方向）に伸び、加締め片部１１６ｂの後端側（絶縁外皮側）に位置する芯線１０１は、後端側（絶縁外皮側）（図９（ｂ）のｂ矢印方向）に伸びる。 In the above caulking process, the core wire 101 receives a crimping force from the caulking piece portion 116b. Then, as shown in FIG. 9B, the core wire 101 can freely extend in either the left or right direction (a arrow direction and b arrow direction in FIG. 9B). Generally, the core wire 101 located on the distal end side of the crimping piece portion 116b extends to the distal end side (in the direction of arrow a in FIG. 9B), and the rear end side (insulating outer skin side) of the crimping piece portion 116b. The core wire 101 located on the side extends to the rear end side (insulating outer skin side) (in the direction of arrow b in FIG. 9B).
　このように、芯線１０１が自由に伸び、縮径するため、圧着力が有効に芯線１０１の各素線１０１ａに作用しない。素線１０１ａは、伸びることによって新生面を発生するものの、低い圧縮力しか受けないため、凝着を有効に発生させることができない。そして、凝着が発生しない、若しくは、凝着が不足すると、素線１０１ａ間の導通特性が向上せず、電気接続箇所の電気抵抗が高くなるという問題があった。 Thus, since the core wire 101 freely expands and contracts, the crimping force does not effectively act on each strand 101a of the core wire 101. Although the strand 101a generates a new surface when stretched, it receives only a low compressive force, and therefore cannot effectively generate adhesion. If adhesion does not occur or if adhesion is insufficient, there is a problem that the electrical connection characteristics between the strands 101a are not improved and the electrical resistance at the electrical connection point is increased.
　そこで、本発明は、上述した課題を解決すべくなされたものであり、電線との電気接続箇所における電気抵抗を低減できる圧着端子、及び、圧着端子を加工に使用する加締治具を提供することを目的とする。 Accordingly, the present invention has been made to solve the above-described problems, and provides a crimp terminal that can reduce electrical resistance at an electrical connection location with an electric wire, and a crimping jig that uses the crimp terminal for processing. For the purpose.
　本発明の第１の態様に係る圧着端子は、電線の複数の素線からなる芯線に加締め圧着可能な芯線圧着部を備える。芯線圧着部は、芯線の軸方向の中央に位置する中央部の高さを高く、中央部の両側に位置する両側部の高さを低く加締められる。 The crimp terminal according to the first aspect of the present invention includes a core crimping portion that can be crimped to a core consisting of a plurality of strands of an electric wire. The core wire crimping portion is crimped by increasing the height of the central portion located in the center of the core wire in the axial direction and decreasing the height of both side portions located on both sides of the central portion.
　芯線は、アルミ製であってもよい。 The core wire may be made of aluminum.
　本発明の第２の態様に係る圧着端子の加締治具は、加締溝を有し、加締め溝に沿って芯線圧着部を塑性変形して、電線の複数の素線からなる芯線に芯線圧着部を加締め圧着可能な圧着端子を、芯線に加締め圧着するためのものであって、芯線圧着部の中央部を加締めるための第１加締溝と、芯線圧着部の中央部の両側に位置する両側部を加締めるための第２加締溝とを備える。第１加締溝の高さ位置は、第２加締溝の高さ位置より高く設定される。 The crimping jig of the crimp terminal according to the second aspect of the present invention has a crimping groove, and plastically deforms the core wire crimping portion along the crimping groove to form a core wire composed of a plurality of strands of the electric wire. A crimp terminal capable of crimping and crimping a core wire crimping portion is crimped to the core wire, and includes a first crimping groove for crimping the center portion of the core wire crimping portion and the center portion of the core wire crimping portion. And second caulking grooves for caulking both side portions located on both sides of the. The height position of the first caulking groove is set higher than the height position of the second caulking groove.
　本発明の各態様によれば、芯線圧着部の加締め過程では、芯線に圧縮力が作用するため、各素線が伸びることによって新生面が発生する。また、芯線圧着部の両側部の箇所では、芯線が低く加締められるが、芯線圧着部の外側に逃げるように自由に伸びることが可能である一方、芯線圧着部の中央部の箇所では、その両側部の箇所の低く加締められた芯線によって軸方向の伸びが抑制され、芯線に圧縮力が効率良く作用する。つまり、芯線圧着力の中央部の箇所では、各素線の伸びによる新生面が発生し、且つ、各素線に効率良く圧縮力が作用することによって凝着が発生し、素線間の導通特性が向上する。以上より、電気接続箇所の電気抵抗が低減する。 According to each aspect of the present invention, in the caulking process of the core wire crimping portion, a compressive force acts on the core wire, so that a new surface is generated as each strand extends. In addition, the core wire is caulked low at locations on both sides of the core wire crimping portion, but can be freely extended so as to escape to the outside of the core wire crimp portion, while at the center portion of the core wire crimp portion, The low-crimped core wire on both sides suppresses axial elongation, and compressive force acts efficiently on the core wire. In other words, in the central portion of the core crimping force, a new surface is generated due to the elongation of each strand, and adhesion occurs due to efficient compression force acting on each strand, and the conduction characteristics between the strands. Will improve. From the above, the electrical resistance at the electrical connection point is reduced.
図１は、実施形態に係る圧着端子に電線を圧着する前の状態の斜視図である。FIG. 1 is a perspective view of a state before an electric wire is crimped to a crimp terminal according to the embodiment. 図２（ａ）は実施形態に係る圧着端子に電線を圧着した後の状態の側面図、図２（ｂ）は図２（ａ）の要部拡大図である。Fig.2 (a) is a side view of the state after crimping | bonding an electric wire to the crimp terminal which concerns on embodiment, FIG.2 (b) is a principal part enlarged view of Fig.2 (a). 図３（ａ）は図２（ａ）のＡ－Ａ線断面図、図３（ｂ）は図２（ａ）のＢ－Ｂ線断面図である。3A is a cross-sectional view taken along the line AA in FIG. 2A, and FIG. 3B is a cross-sectional view taken along the line BB in FIG. 2A. 図４（ａ）は実施形態に係る加締め治具の両端部の正面図、図４（ｂ）は実施形態に係る加締治具の中央部の正面図、図４（ｃ）は実施形態に係る加締治具の側面図である。4A is a front view of both ends of the caulking jig according to the embodiment, FIG. 4B is a front view of the central portion of the caulking jig according to the embodiment, and FIG. 4C is the embodiment. It is a side view of the crimping jig which concerns on. 図５（ａ）は実施形態に係る加締め治具による加締め工程を示す正面図、図５（ｂ）は実施形態に係る加締め治具による加締め工程を示す側面図である。Fig.5 (a) is a front view which shows the crimping process by the crimping jig which concerns on embodiment, FIG.5 (b) is a side view which shows the crimping process by the crimping jig which concerns on embodiment. 図６は、従来例の圧着端子に電線を圧着する前の状態の斜視図である。FIG. 6 is a perspective view of a state before a wire is crimped to a conventional crimp terminal. 図７は、従来例の圧着端子に電線を圧着した後の状態の側面図である。FIG. 7 is a side view of a state after a wire is crimped to a crimp terminal of a conventional example. 図８（ａ）は従来例の加締め治具の正面図、図８（ｂ）は従来例の加締治具の側面図である。FIG. 8A is a front view of a conventional crimping jig, and FIG. 8B is a side view of the conventional crimping jig. 図９（ａ）は従来例の加締め治具による加締め工程を示す正面図、図９（ｂ）は従来例の加締め治具による加締め工程を示す側面図である。FIG. 9A is a front view showing a caulking process using a conventional caulking jig, and FIG. 9B is a side view showing the caulking process using the caulking jig of the conventional example.
　以下、実施形態を図面に基づいて説明する。 Hereinafter, embodiments will be described with reference to the drawings.
　図１―５を用いて、実施形態を説明する。図１―３に示すように、電線Ｗは、複数の素線１ａからなる芯線１と、芯線１の外周を覆う絶縁外皮２とを備える。電線Ｗの先端側は、絶縁外皮２が除去されて、芯線１が露出されている。芯線１は、アルミニウム製又はアルミニウム合金製（以下、アルミ製）の素線１ａが互いに撚られている。つまり、電線Ｗは、アルミ電線である。 The embodiment will be described with reference to FIGS. As shown in FIG. 1C, the electric wire W includes a core wire 1 composed of a plurality of strands 1 a and an insulating sheath 2 that covers the outer periphery of the core wire 1. At the tip end side of the electric wire W, the insulating sheath 2 is removed, and the core wire 1 is exposed. As for the core wire 1, the strands 1a made from aluminum or aluminum alloy (henceforth aluminum) are mutually twisted. That is, the electric wire W is an aluminum electric wire.
　圧着端子１０は、例えば、銅合金製であり、所定形状に裁断したプレートを折り曲げ加工することによって形成されている。圧着端子１０は、相手端子接続部１１と、電線接続部１５とを備える。電線接続部１５は、芯線圧着部１６と、外皮圧着部１７とを備える。芯線圧着部１６は、基底部１６ａと、この基底部１６ａの両側から延設された一対の加締め片部１６ｂとを備える。芯線圧着部１６は、図２（ｂ）に詳しく示すように、芯線１の軸方向の中央部Ｅ２の高さｈ１を高く、左右の両側部Ｅ１，Ｅ３の高さｈ２を低く加締められている。換言すれば、芯線圧着部１６は、芯線１の軸方向の中央に位置する中央部Ｅ２が高さを高く、つまり、弱い力で加締められ、中央部Ｅ２の両側に位置する両側部Ｅ１、Ｅ３が高さを低く、つまり、強い力で加締められている。 The crimp terminal 10 is made of, for example, a copper alloy, and is formed by bending a plate cut into a predetermined shape. The crimp terminal 10 includes a mating terminal connection portion 11 and a wire connection portion 15. The wire connection portion 15 includes a core wire crimping portion 16 and an outer skin crimping portion 17. The core wire crimping portion 16 includes a base portion 16a and a pair of caulking piece portions 16b extending from both sides of the base portion 16a. As shown in detail in FIG. 2B, the core wire crimping portion 16 is crimped by increasing the height h1 of the central portion E2 in the axial direction of the core wire 1 and decreasing the height h2 of the left and right side portions E1, E3. Yes. In other words, the core wire crimping portion 16 has a central portion E2 positioned at the center in the axial direction of the core wire 1 having a high height, that is, both side portions E1 positioned on both sides of the central portion E2 by being caulked with a weak force. E3 has a low height, that is, it is crimped with a strong force.
　芯線圧着部１６の基底部１６ａと一対の加締め片部１６ｂの内面には、多数の丸形状の溝（セレーション）１８が形成されている。 A large number of round grooves 18 are formed on the inner surface of the base portion 16a of the core wire crimping portion 16 and the pair of caulking piece portions 16b.
　外皮圧着部１７は、基底部１７ａと、この基底部１７ａの両側から延設された一対の加締め片部１７ｂとを備える。 The outer skin crimping portion 17 includes a base portion 17a and a pair of caulking piece portions 17b extending from both sides of the base portion 17a.
　圧着端子１０は、芯線圧着部１６によって露出された芯線１を加締め圧着し、外皮圧着部１７によって絶縁外皮２を加締め圧着している。 The crimp terminal 10 crimps and crimps the core wire 1 exposed by the core wire crimping portion 16, and crimps and crimps the insulating sheath 2 by the outer skin crimping portion 17.
　圧着端子１０は、図４に示す加締め治具２０によって圧着される。加締め治具２０は、上下動可能なワイヤクリンパ２１と、ワイヤクリンパ２１の下方に配置されたアンビル２２とを備える。ワイヤクリンパ２１は、互いに分割された、左側クリンパ２１Ａと、中央クリンパ２１Ｂと、右側クリンパ２１Ｃとを備える。左側クリンパ２１Ａと中央クリンパ２１Ｂと右側クリンパ２１Ｃは、一体となって上下動される。左側クリンパ２１Ａ、中央クリンパ２１Ｂ及び右側クリンパ２１Ｃは、その各下部（加締め先端側）に最終的な加締め外周形状の加締め溝２１ａ，２１ｂ，２１ｃをそれぞれ有する。中央クリンパ２１Ｂは、芯線圧着部１６の中央部Ｅ２を加締める。左側クリンパ２１Ａ及び右側クリンパ２１Ｃは、芯線圧着部１６の中央部Ｅ２の両側に位置する両側部Ｅ１、Ｅ３を加締める。 The crimp terminal 10 is crimped by a crimping jig 20 shown in FIG. The caulking jig 20 includes a wire crimper 21 that can move up and down, and an anvil 22 disposed below the wire crimper 21. The wire crimper 21 includes a left crimper 21A, a central crimper 21B, and a right crimper 21C that are divided from each other. The left crimper 21A, the central crimper 21B, and the right crimper 21C are moved up and down together. The left crimper 21A, the central crimper 21B, and the right crimper 21C have final crimped outer circumferential crimping grooves 21a, 21b, and 21c, respectively, at their lower portions (caulking tip side). The central crimper 21 </ b> B caulks the central part E <b> 2 of the core wire crimping part 16. The left crimper 21 </ b> A and the right crimper 21 </ b> C caulk both side parts E <b> 1 and E <b> 3 located on both sides of the center part E <b> 2 of the core wire crimping part 16.
　左側クリンパ２１Ａ及び右側クリンパ２１Ｃの各加締め溝２１ａ，２１ｃの高さ位置（深さ）は、中央クリンパ２１Ｂの加締め溝２１ｂの高さ位置（深さ）より低く（浅く）設定されている。 The height positions (depths) of the crimping grooves 21a and 21c of the left crimper 21A and the right crimper 21C are set lower (shallow) than the height position (depth) of the crimping groove 21b of the central crimper 21B. .
　図５（ａ）、５（ｂ）に示すように、ワイヤクリンパ２１によって一対の加締め片部１６ｂを上方から押圧すると、３箇所の加締め溝２１ａ，２１ｂ，２１ｃに沿って一対の加締め片部１６ｂが塑性変形される。このとき、芯線圧着部１６は、図２（ｂ）に詳しく示すように、芯線１の軸方向の中央部Ｅ２の高さｈ１を高く、中央部の左右外側に位置する両側部Ｅ１、Ｅ３の高さｈ２を低く加締められる。 As shown in FIGS. 5A and 5B, when the pair of caulking pieces 16b are pressed from above by the wire crimper 21, a pair of caulking along the three caulking grooves 21a, 21b, and 21c. The piece 16b is plastically deformed. At this time, as shown in detail in FIG. 2 (b), the core wire crimping portion 16 has a height h1 of the central portion E2 in the axial direction of the core wire 1 and is increased between the side portions E1 and E3 located on the left and right outer sides of the central portion. The height h2 is caulked low.
　芯線圧着部１６の加締め過程では、芯線１に圧縮力が作用するため、各素線１ａが伸びることによって新生面が発生する。また、図５（ｂ）に示すように、芯線圧着部１６の両側部Ｅ１，Ｅ３の箇所では芯線１が低く加締められるが、芯線圧着部１６の外側（ａ矢印方向、ｂ矢印方向）に向かって伸びることが可能である。一方、芯線圧着部１６の中央部Ｅ２の箇所では、その両側部Ｅ１，Ｅ３が低く加締められていることによって、軸方向の伸びが抑制され、芯線１に圧縮力が効率良く作用する。つまり、芯線圧着部１６の中央部Ｅ２の箇所では、各素線１ａの伸びによる新生面の発生と、各素線１ａへの効率良い圧縮力の作用とによって凝着が発生し、素線１ａ間の導通特性が向上する。以上より、電気接続箇所の電気抵抗が低減する。 In the caulking process of the core wire crimping portion 16, a compressive force acts on the core wire 1, so that a new surface is generated when each strand 1 a extends. Further, as shown in FIG. 5 (b), the core wire 1 is caulked low at the positions of both side portions E1 and E3 of the core wire crimping portion 16, but outside the core wire crimping portion 16 (a arrow direction, b arrow direction). It is possible to stretch towards. On the other hand, at the location of the central portion E2 of the core wire crimping portion 16, both side portions E1 and E3 are crimped low, so that the axial extension is suppressed and the compressive force acts on the core wire 1 efficiently. That is, in the location of the central portion E2 of the core wire crimping portion 16, adhesion occurs due to the generation of a new surface due to the extension of each strand 1a and the action of an efficient compressive force on each strand 1a. This improves the conduction characteristics. From the above, the electrical resistance at the electrical connection point is reduced.
　芯線圧着部１６の内面には、溝（セレーション）１８が設けられている。芯線１の素線１ａが溝１８に入り込むよう変形、つまり、伸び変形するため、新生面が発生し、圧縮力を受けることによって凝着が発生するため、芯線１と芯線圧着部１６との間の導通抵抗の低減になると共に素線１ａ間の導通抵抗の低減になる。これによっても、電気接続箇所の電気抵抗の低減を図ることができる。 A groove (serration) 18 is provided on the inner surface of the core wire crimping portion 16. Since the element wire 1a of the core wire 1 is deformed so as to enter into the groove 18, that is, is deformed by extension, a new surface is generated, and adhesion is generated by receiving a compressive force. Therefore, between the core wire 1 and the core wire crimping portion 16 The conduction resistance is reduced and the conduction resistance between the strands 1a is reduced. This also makes it possible to reduce the electrical resistance at the electrical connection point.
　芯線１は、アルミ製である。アルミ製の素線１ａは、銅合金製に較べて表面にできる酸化被膜が厚い。そのため、アルミ製の芯線１は、素線１ａ間の導通抵抗による電気抵抗の増加が問題であったが、実施形態では、凝着の発生によって素線１ａ間の導通抵抗を低減できるため、特にアルミ電線に有効である。アルミ製の芯線１は、銅合金製に較べて柔らかくて伸び易いが、上述したように、芯線圧着部１６の中央部Ｅ２の芯線１の伸びを抑制して凝着を発生させることができる。このため、実施形態は、この観点からも特にアルミ電線に対する圧着に有効である。 Core wire 1 is made of aluminum. The aluminum strand 1a has a thicker oxide film on the surface than the copper alloy. Therefore, the aluminum core wire 1 has a problem of an increase in electrical resistance due to the conduction resistance between the strands 1a. However, in the embodiment, since the conduction resistance between the strands 1a can be reduced by the occurrence of adhesion, Effective for aluminum wires. The aluminum core wire 1 is softer and more easily stretched than a copper alloy product, but as described above, it can suppress the elongation of the core wire 1 at the center portion E2 of the core wire crimping portion 16 and cause adhesion. Therefore, the embodiment is particularly effective for crimping an aluminum electric wire from this viewpoint.
　実施形態では、加締治具２０のワイヤクリンパ２１は、互いに分割された左側クリンパ２１Ａ、中央クリンパ２１Ｂ、右側クリンパ２１Ｃから構成されているが、一体のブロック体であって良い。 In the embodiment, the wire crimper 21 of the crimping jig 20 includes the left crimper 21A, the central crimper 21B, and the right crimper 21C that are divided from each other, but may be an integral block body.
　本発明によれば、芯線圧着力の中央部の箇所では、各素線の伸びによる新生面が発生し、且つ、各素線に効率良く圧縮力が作用することによって凝着が発生し、素線間の導通特性が向上するような圧着端子、及び、圧着端子を加締める加締治具を提供することができる。
 
  According to the present invention, in the central portion of the core wire crimping force, a new surface is generated due to the elongation of each strand, and adhesion occurs due to efficient compression force acting on each strand. It is possible to provide a crimping terminal that improves the electrical conduction characteristics between them and a crimping jig that crimps the crimping terminal.

Claims (3)

  1. 　圧着端子であって、
    　電線の複数の素線からなる芯線に加締め圧着可能な芯線圧着部を備え、
    　前記芯線圧着部は、前記芯線の軸方向の中央に位置する中央部の高さを高く、前記中央部の両側に位置する両側部の高さを低く加締められる
    ことを特徴とする圧着端子。     A crimp terminal,
    Provided with a core crimping part that can be crimped to a core consisting of a plurality of strands of electric wire,
    The crimp terminal is characterized in that the core crimping portion is crimped with a height of a central portion located in the center of the core wire in the axial direction and a low height of both side portions located on both sides of the center portion.
  2. 　請求項１記載の圧着端子であって、
    　前記芯線は、アルミ製であることを特徴とする圧着端子。     The crimp terminal according to claim 1,
    The crimp terminal, wherein the core wire is made of aluminum.
  3. 　加締溝を有し、前記加締め溝に沿って芯線圧着部を塑性変形して、電線の複数の素線からなる芯線に前記芯線圧着部を加締め圧着可能な圧着端子を、前記芯線に加締め圧着するための加締治具であって、
    　前記芯線圧着部の中央部を加締めるための第１加締溝と、
    　前記芯線圧着部の前記中央部の両側に位置する両側部を加締めるための第２加締溝と
    を備え、
    　前記第１加締溝の高さ位置は、前記第２加締溝の高さ位置より高く設定される
    ことを特徴とする圧着端子の加締治具。
          A crimping terminal having a crimping groove, plastically deforming the core crimping portion along the crimping groove, and crimping and crimping the core crimping portion to the core consisting of a plurality of strands of the electric wire, A crimping jig for crimping and crimping,
    A first caulking groove for caulking the central portion of the core wire crimping portion;
    A second caulking groove for caulking both side portions located on both sides of the central portion of the core wire crimping portion,
    A crimping jig for a crimp terminal, wherein a height position of the first crimping groove is set higher than a height position of the second crimping groove.
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Publication number Priority date Publication date Assignee Title
FR3056137A1 (en) * 2016-09-19 2018-03-23 Delphi Int Operations Luxembourg Sarl CRIMPING TOOL AND FEMALE ELECTRICAL CONTACT

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