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JP7270939B2 - Crimping terminal manufacturing method - Google Patents

Crimping terminal manufacturing method Download PDF

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JP7270939B2
JP7270939B2 JP2021509563A JP2021509563A JP7270939B2 JP 7270939 B2 JP7270939 B2 JP 7270939B2 JP 2021509563 A JP2021509563 A JP 2021509563A JP 2021509563 A JP2021509563 A JP 2021509563A JP 7270939 B2 JP7270939 B2 JP 7270939B2
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covering
holding
crimp terminal
core wire
holding portion
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JPWO2020196706A1 (en
JPWO2020196706A5 (en
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正司 中園
清貴 浦下
厚治 千葉
浩吉 堀
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Iwanuma Seiko Corporation
Tatsuta Electric Wire and Cable Co Ltd
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Tatsuta Electric Wire and Cable Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • 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
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending

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

Description

関連出願の相互参照Cross-reference to related applications

本願は、日本国特願２０１９－０６３６８９号の優先権を主張し、日本国特願２０１９－０６３６８９号の内容は、引用によって本願明細書の記載に組み込まれる。 This application claims the priority of Japanese Patent Application No. 2019-063689, and the content of Japanese Patent Application No. 2019-063689 is incorporated into the description of the present specification by reference.

本発明は、電線を保持したときの電線保持部における引張強度を向上させた圧着端子、前記圧着端子付き電線、及び前記圧着端子の製造方法に関するものである。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crimp terminal with improved tensile strength in a wire holding portion when holding a wire, an electric wire with the crimp terminal, and a method for manufacturing the crimp terminal.

従来から、電線を保持する圧着接続部を備えた端子が知られている（特許文献１参照）。具体的に、この端子は、図１９に示すように、電気接続部８１０と、圧着接続部８２０と、を備えている。 2. Description of the Related Art Conventionally, a terminal provided with a crimp connection portion for holding an electric wire has been known (see Patent Literature 1). Specifically, the terminal includes an electrical connection portion 810 and a crimp connection portion 820, as shown in FIG.

圧着接続部８２０は、電気接続部８１０側から順に、導体圧着部８３０と、外被圧着部８４０と、を有している。 The crimp connection portion 820 has a conductor crimp portion 830 and a jacket crimp portion 840 in order from the electrical connection portion 810 side.

導体圧着部８３０は、基底部８３１と、基底部８３１の両側部に形成された一対の導体圧着片８３２と、を有している。導体圧着片８３２は、芯線９０１を挟むように基底部８３１から延設されている。導体圧着部８３０は、一対の導体圧着片８３２を内側へ向けて湾曲させることにより、電線９００の芯線９０１に圧着される（図２０参照）。これにより、端子８００が電線９００の芯線９０１と導通接続される。 The conductor crimping portion 830 has a base portion 831 and a pair of conductor crimping pieces 832 formed on both sides of the base portion 831 . The conductor crimping piece 832 extends from the base portion 831 so as to sandwich the core wire 901 . The conductor crimping portion 830 is crimped to the core wire 901 of the electric wire 900 by bending the pair of conductor crimping pieces 832 inward (see FIG. 20). As a result, the terminal 800 is conductively connected to the core wire 901 of the electric wire 900 .

外被圧着部８４０は、基底部８４１と、基底部８４１の両側部に形成された一対の外被圧着片８４２と、を有している。外被圧着部８４０の基底部８４１は、導体圧着部８３０の基底部８３１から延びている。外被圧着片８４２は、基底部８４１から電線９００の絶縁被覆部分９０２を挟むように延設されている。外被圧着部８４０は、一対の外被圧着片８４２を内側へ向けて湾曲させることにより、電線９００の絶縁被覆部分９０２に圧着され且つ固定される（図２０参照）。 The jacket crimping portion 840 has a base portion 841 and a pair of jacket crimping pieces 842 formed on both sides of the base portion 841 . A base portion 841 of the jacket crimp portion 840 extends from a base portion 831 of the conductor crimp portion 830 . The jacket crimping piece 842 extends from the base portion 841 so as to sandwich the insulation coating portion 902 of the electric wire 900 . The jacket crimping portion 840 is crimped and fixed to the insulating coating portion 902 of the electric wire 900 by bending the pair of jacket crimping pieces 842 inward (see FIG. 20).

上記の端子８００が取り付けられた電線９００では、使用状態や使用環境によって電線９００の圧着接続部８２０に保持されている部位に負荷や応力が集中する場合がある。このため、近年、電線９００に取り付けられる端子８００では、圧着接続部８２０における引張強度の向上が求められている。 In the electric wire 900 to which the terminal 800 is attached, load and stress may concentrate on the portion held by the crimping connection portion 820 of the electric wire 900 depending on the usage state and usage environment. Therefore, in recent years, the terminal 800 attached to the electric wire 900 is required to have improved tensile strength in the crimp connection portion 820 .

日本国特開２０１８－１１３１８１号公報Japanese Patent Application Laid-Open No. 2018-113181

そこで、本発明は、電線を保持したときの電線保持部における引張強度を向上させた圧着端子、前記圧着端子付き電線、及び前記圧着端子の製造方法を提供することを課題とする。 Accordingly, an object of the present invention is to provide a crimp terminal with improved tensile strength in a wire holding portion when holding a wire, an electric wire with the crimp terminal, and a method for manufacturing the crimp terminal.

本発明に係る圧着端子は、
芯線と該芯線を被覆する絶縁部材とを有する電線を保持可能な電線保持部を備え、
前記電線保持部は、
前記電線において前記芯線が露出している露出部を保持可能な芯線保持部と、
前記芯線保持部と隣り合う位置に配置され、且つ、前記電線における前記露出部と隣接する位置において前記芯線が前記絶縁部材に被覆されている被覆部を該被覆部の周方向に囲むように保持可能な被覆部保持部と、を有し、
前記被覆部保持部は、前記被覆部を保持したときに該被覆部に押し付けられる対向面において前記周方向に沿って延びる係止部を有し、
前記係止部は、前記対向面における当該係止部以外の領域に対して突出している凸部と、該凸部に隣接する位置において前記領域に対して凹んでいる凹部と、を有する。The crimp terminal according to the present invention is
A wire holding part capable of holding a wire having a core wire and an insulating member covering the core wire,
The electric wire holding portion is
a core wire holding portion capable of holding an exposed portion of the electric wire where the core wire is exposed;
A covering portion arranged adjacent to the core wire holding portion and having the core wire covered with the insulating member at a position adjacent to the exposed portion of the electric wire is held so as to surround the covering portion in a circumferential direction. a possible cover retainer, and
the covering portion holding portion has a locking portion extending along the circumferential direction on a facing surface that is pressed against the covering portion when the covering portion is held;
The locking portion has a convex portion that protrudes to a region other than the locking portion on the facing surface, and a concave portion that is recessed from the region at a position adjacent to the convex portion.

前記圧着端子では、
前記凹部は、前記凸部の芯線保持部側において該凸部と隣接していてもよい。In the crimp terminal,
The concave portion may be adjacent to the convex portion on the core wire holding portion side of the convex portion.

また、前記圧着端子では、
前記対向面と直交し且つ前記芯線保持部と前記被覆部保持部とが並ぶ方向に延びる断面において、前記凹部の内側領域の断面積は、前記凸部の断面積より大きいことが好ましい。Moreover, in the crimp terminal,
In a cross section orthogonal to the facing surface and extending in a direction in which the core wire holding portion and the covering portion holding portion are aligned, the cross-sectional area of the inner region of the concave portion is preferably larger than the cross-sectional area of the convex portion.

また、前記圧着端子では、
前記凹部の内側領域の断面積に対する前記凸部の断面積の比は、８０％以上且つ９０％未満であってもよい。Moreover, in the crimp terminal,
A ratio of the cross-sectional area of the convex portion to the cross-sectional area of the inner region of the concave portion may be 80% or more and less than 90%.

また、本発明に係る圧着端子付き電線は、
上記のいずれかの圧着端子と、
芯線と該芯線を被覆する絶縁部材とを有する電線と、を有し、
前記電線は、前記芯線が露出する露出部を有し、
前記圧着端子の前記電線保持部では、前記芯線保持部が前記電線の前記露出部を保持すると共に、前記被覆部保持部が前記電線における前記露出部と隣接した位置で前記芯線が前記絶縁部材によって被覆されている被覆部を保持する。Further, the electric wire with a crimp terminal according to the present invention is
any of the above crimp terminals;
an electric wire having a core wire and an insulating member covering the core wire,
The electric wire has an exposed portion where the core wire is exposed,
In the wire holding portion of the crimp terminal, the core wire holding portion holds the exposed portion of the wire, and the core wire is held by the insulating member at a position where the covering portion holding portion is adjacent to the exposed portion of the wire. Hold the covering that is covered.

また、前記圧着端子付き電線では、
前記電線の前記芯線に対する前記絶縁部材の密着力は、５Ｎ以下であってもよい。Moreover, in the electric wire with the crimp terminal,
The adhesion force of the insulating member to the core wire of the electric wire may be 5N or less.

また、本発明に係る圧着端子の製造方法は、
芯線と該芯線を被覆する絶縁部材とを有する電線において前記芯線が露出している露出部を保持可能な芯線保持部と、前記芯線保持部と隣り合う位置に配置され、且つ前記電線の前記露出部と隣接する位置において前記芯線が前記絶縁部材に被覆されている被覆部を該被覆部の周方向に囲むように保持可能な被覆部保持部と、を有する電線保持部を備える圧着端子の製造方法であって、
前記被覆部保持部が前記被覆部を保持したときに該被覆部に押し付けられる該被覆部保持部の対向面に、前記周方向に沿って延びる係止部であって、該対向面における当該係止部以外の領域に対して突出している凸部と、該凸部に隣接する位置において前記領域に対して凹んでいる凹部と、を有する係止部が形成される工程を備え、
該係止部が形成される工程では、前記係止部が形成される前の平らな状態の被覆部保持部の前記対向面に対して、該対向面に押し当てられた状態の加工刃を該被覆部保持部における前記周方向に対応する方向に沿って移動させることにより、前記凹部が形成されつつ、該被覆部保持部における前記凹部の形成される領域にあった部位が前記加工刃の移動に伴って該凹部と隣接する位置に押し退けられることで前記凸部も形成される。Further, a method for manufacturing a crimp terminal according to the present invention includes:
a core wire holding portion capable of holding an exposed portion of the exposed core wire in an electric wire having a core wire and an insulating member covering the core wire; Manufacture of a crimp terminal provided with a wire holding portion having a covering portion holding portion capable of holding a covering portion in which the core wire is covered with the insulating member at a position adjacent to the portion so as to surround the covering portion in a circumferential direction. a method,
a locking portion extending along the circumferential direction on a facing surface of the covering portion holding portion that is pressed against the covering portion when the covering portion holding portion holds the covering portion; A step of forming a locking portion having a protrusion projecting to a region other than the stop portion and a recess recessed from the region at a position adjacent to the protrusion,
In the step of forming the engaging portion, the processing blade in a state of being pressed against the facing surface of the covering portion holding portion in a flat state before the engaging portion is formed. By moving the covering portion holding portion along the direction corresponding to the circumferential direction, the concave portion is formed, and the portion of the covering portion holding portion that was in the area where the concave portion is formed is replaced with the working blade. The convex portion is also formed by being pushed away to a position adjacent to the concave portion as it moves.

また、前記圧着端子の製造方法では、
前記平らな状態の被覆部保持部は、前記周方向に対応する方向の端縁に外側を向いた端面を有し、
前記係止部が形成される工程では、前記加工刃を、前記端面又は該端面と前記対向面とによって構成される角部から当てて前記周方向に対応する方向に沿って移動させてもよい。Further, in the crimp terminal manufacturing method,
The covering portion holding portion in a flat state has an end surface facing outward on an edge in a direction corresponding to the circumferential direction,
In the step of forming the engaging portion, the processing blade may be applied from the end surface or a corner formed by the end surface and the opposing surface and moved along the direction corresponding to the circumferential direction. .

また、前記圧着端子の製造方法では、
前記加工刃における少なくとも前記対向面に押し当てられる部位は、移動方向に対して上り勾配となるように延びていてもよい。Further, in the crimp terminal manufacturing method,
At least a portion of the machining blade that is pressed against the facing surface may extend upwardly with respect to the movement direction.

図１は、本実施形態に係る圧着端子の斜視図である。FIG. 1 is a perspective view of a crimp terminal according to this embodiment. 図２は、前記圧着端子の電線保持部の構成を説明するための図である。FIG. 2 is a diagram for explaining the configuration of the wire holding portion of the crimp terminal. 図３は、図２のＩＩＩ－ＩＩＩ位置の断面図である。FIG. 3 is a cross-sectional view taken along line III--III in FIG. 図４は、係止部の拡大断面図である。FIG. 4 is an enlarged cross-sectional view of the locking portion. 図５は、前記電線保持部が電線を保持した状態を示す図である。FIG. 5 is a diagram showing a state in which the wire holding portion holds the wire. 図６は、圧着端子の製造装置を含むプレス装置の模式図である。FIG. 6 is a schematic diagram of a press apparatus including a crimp terminal manufacturing apparatus. 図７は、図６においてＶＩＩで示す位置の拡大断面図である。7 is an enlarged cross-sectional view of the position indicated by VII in FIG. 6. FIG. 図８は、導電性を有する帯状の部材から圧着端子が形成される工程を説明するための図である。FIG. 8 is a diagram for explaining a process of forming a crimp terminal from a strip-like member having conductivity. 図９は、可動部材を進行方向と直交する方向から見た図である。FIG. 9 is a diagram of the movable member viewed from a direction orthogonal to the traveling direction. 図１０は、可動部材を進行方向側から見た図である。FIG. 10 is a diagram of the movable member viewed from the traveling direction side. 図１１は、加工刃が係止部を形成する状態を説明するための図である。11A and 11B are diagrams for explaining a state in which the processing blade forms the locking portion. FIG. 図１２は、各加工刃が被覆部保持部の内側面に押し付けられている状態を示す断面図である。FIG. 12 is a cross-sectional view showing a state in which each processing blade is pressed against the inner surface of the covering portion holding portion. 図１３は、被覆部保持部が電線保持部を保持した状態を説明するための模式断面図である。FIG. 13 is a schematic cross-sectional view for explaining a state in which the covering portion holding portion holds the wire holding portion. 図１４は、他実施形態に係る被覆部保持部の断面図である。FIG. 14 is a cross-sectional view of a covering portion holding portion according to another embodiment. 図１５は、他実施形態に係る被覆部保持部が電線を保持した状態の断面図である。FIG. 15 is a cross-sectional view of a state in which a covering portion holding portion according to another embodiment holds an electric wire. 図１６Ａは、他実施形態に係る被覆部保持部のカシメ前の状態を示す断面図である。FIG. 16A is a cross-sectional view showing a state before crimping of a covering portion holding portion according to another embodiment. 図１６Ｂは、前記被覆部保持部がカシメられた状態を示す断面図である。FIG. 16B is a cross-sectional view showing a state in which the covering portion holding portion is crimped. 図１７は、他実施形態に係る圧着端子に電線が接続された状態を示す図である。FIG. 17 is a diagram showing a state in which an electric wire is connected to a crimp terminal according to another embodiment. 図１８Ａは、他実施形態に係る圧着端子に電線が接続された状態を示す平面図である。18A is a plan view showing a state in which an electric wire is connected to a crimp terminal according to another embodiment; FIG. 図１８Ｂは、他実施形態に係る圧着端子に電線が接続された状態を示す側面図である。18B is a side view showing a state in which an electric wire is connected to a crimp terminal according to another embodiment; FIG. 図１９は、従来の圧着端子であって、電線の接続前の状態の圧着端子を示す斜視図である。FIG. 19 is a conventional crimp terminal and is a perspective view showing the crimp terminal before connection of electric wires. 図２０は、従来の圧着端子であって、電線の接続後の状態の圧着端子を示す斜視図である。FIG. 20 is a conventional crimp terminal, and is a perspective view showing the crimp terminal in a state after electric wire connection.

以下、本発明の一実施形態について、図１～図１３を参照しつつ説明する。 An embodiment of the present invention will be described below with reference to FIGS. 1 to 13. FIG.

本実施形態に係る圧着端子は、図１及び図２に示すように、電線７（図５参照）を保持可能な電線保持部２を備える。具体的に、圧着端子１は、電線保持部２と、電線保持部２と隣接し且つ相手側端子ピンが挿抜される接続部３と、を備える。本実施形態の圧着端子１では、電線保持部２と接続部３とが相手側端子ピンの挿抜方向（図１における中心軸Ｃの延びる方向）に並んでいる。この圧着端子１は、導電性を有する。本実施形態の圧着端子１は、リン青銅によって形成されているが、真鍮、洋白、メッキ処理されたＳＵＳ等によって形成されていてもよい。 As shown in FIGS. 1 and 2, the crimp terminal according to this embodiment includes a wire holding portion 2 capable of holding a wire 7 (see FIG. 5). Specifically, the crimp terminal 1 includes a wire holding portion 2 and a connection portion 3 adjacent to the wire holding portion 2 and into/from which a mating terminal pin is inserted/extracted. In the crimp terminal 1 of this embodiment, the wire holding portion 2 and the connecting portion 3 are arranged in the insertion/removal direction of the mating terminal pin (the direction in which the central axis C extends in FIG. 1). This crimp terminal 1 has conductivity. The crimp terminal 1 of the present embodiment is made of phosphor bronze, but may be made of brass, nickel silver, plated SUS, or the like.

圧着端子１に保持（接続）される電線７は、図５に示すように、芯線７１と、該芯線７１を被覆する絶縁部材７２と、を有する。本実施形態の電線７では、多数の芯線７１が束ねられた状態で絶縁部材７２に被覆されている。芯線７１は、例えば、カーボン繊維のような導電性繊維である。また、絶縁部材７２は、例えば、エラストマーである。以下では、電線７の端部において、芯線７１が露出している部位を露出部７Ａと称し、露出部７Ａと隣接する位置において芯線７１が絶縁部材７２に被覆されている部位を被覆部７Ｂと称する。 The electric wire 7 held (connected) to the crimp terminal 1 has a core wire 71 and an insulating member 72 covering the core wire 71, as shown in FIG. In the electric wire 7 of this embodiment, a large number of core wires 71 are bundled and covered with an insulating member 72 . The core wire 71 is, for example, a conductive fiber such as carbon fiber. Also, the insulating member 72 is, for example, an elastomer. Hereinafter, the portion where the core wire 71 is exposed at the end of the electric wire 7 is referred to as the exposed portion 7A, and the portion adjacent to the exposed portion 7A where the core wire 71 is covered with the insulating member 72 is referred to as the covered portion 7B. called.

図１及び図２に戻り、電線保持部２は、露出部７Ａを保持可能な芯線保持部２１と、芯線保持部２１と隣り合う位置に配置され且つ被覆部７Ｂを該被覆部７Ｂの周方向に囲むように保持可能な被覆部保持部２２と、を有する。この電線保持部２は、電線７の被保持部を、電線７の中心軸が芯線保持部２１と被覆部保持部２２との並び方向（以下、単に「並び方向」と称する。）を向くように保持する（図５参照）。尚、電線７の被保持部は、電線保持部２によって保持される部位であり、本実施形態では、電線７の端部である。本実施形態の電線保持部２は、所定の形状に打ち抜かれた平板状の部位（平板状保持部２Ａ：図２参照）が並び方向に延びる中心線Ｃ１と平行な中心軸Ｃ周りに湾曲させられることによって形成されている。Returning to FIGS. 1 and 2, the wire holding portion 2 includes a core wire holding portion 21 capable of holding the exposed portion 7A, and a core wire holding portion 21 which is arranged at a position adjacent to the core wire holding portion 21, and which extends the covering portion 7B in the circumferential direction of the covering portion 7B. and a covering portion holding portion 22 that can be held so as to surround the cover portion. The electric wire holding portion 2 is arranged such that the held portion of the electric wire 7 is oriented so that the central axis of the electric wire 7 faces the alignment direction of the core wire holding portion 21 and the coating portion holding portion 22 (hereinafter simply referred to as the "alignment direction"). (see FIG. 5). The held portion of the electric wire 7 is a portion held by the electric wire holding portion 2, and is an end portion of the electric wire 7 in this embodiment. The electric wire holding portion 2 of the present embodiment is curved around a central axis C parallel to a center line C1 extending in the direction in which flat plate-like portions (flat plate-like holding portion 2A: see FIG. 2) punched into a predetermined shape are arranged. formed by being forced to

芯線保持部２１は、湾曲した板状の第一本体２１１と、第一本体２１１から延びる複数の導体カシメ片２１２と、を有する。 The core wire holding portion 21 has a curved plate-like first main body 211 and a plurality of conductor crimping pieces 212 extending from the first main body 211 .

第一本体２１１は、中心軸Ｃ周りに湾曲し且つ並び方向に延びる板状の部位である。 The first main body 211 is a plate-like portion that curves around the central axis C and extends in the alignment direction.

複数の導体カシメ片２１２は、第一本体２１１上に配置された露出部７Ａに向けてそれぞれカシメられることにより、該露出部７Ａを第一本体２１１に圧着させる（図５参照）。これにより、芯線保持部２１は、電線７の露出部７Ａ（芯線７１）を保持する。 The plurality of conductor crimping pieces 212 are respectively crimped toward the exposed portion 7A arranged on the first main body 211, thereby crimping the exposed portion 7A to the first main body 211 (see FIG. 5). Thereby, the core wire holding portion 21 holds the exposed portion 7A (the core wire 71) of the electric wire 7. As shown in FIG.

これら複数の導体カシメ片２１２のそれぞれは、平板状保持部２Ａにおいて、第一本体２１１の幅方向（図２における左右方向）の両端から該幅方向の外側に向けて延びている。本実施形態の圧着端子１では、幅方向の一方側（図２の右側）の導体カシメ片２１２と他方側（図２の左側）の導体カシメ片２１２とが、並び方向（中心線Ｃ１方向）にずれた位置から交互に延びている。Each of the plurality of conductor crimping pieces 212 extends outward in the width direction from both ends of the first main body 211 in the width direction (horizontal direction in FIG. 2) of the flat holding portion 2A. In the crimp terminal 1 of the present embodiment, the conductor crimping piece 212 on one side in the width direction (right side in FIG. 2) and the conductor crimping piece 212 on the other side (left side in FIG. 2) are aligned in the direction of the center line C1. ) alternately.

被覆部保持部２２は、被覆部７Ｂを保持したときに被覆部７Ｂ側を向く内側面（対向面）２２Ａと、内側面２２Ａと反対側を向く外側面２２Ｂとを有する板状の部位である。具体的に、被覆部保持部２２は、芯線保持部２１の第一本体２１１と連接する第二本体２２１と、第二本体２２１から延びる一対の被覆部カシメ片２２２と、を有する。また、被覆部保持部２２は、被覆部７Ｂを保持したときに該被覆部７Ｂに押し付けられる内側面２２Ａにおいて被覆部７Ｂの周方向に沿って延びる係止部２３を有する。 The covering portion holding portion 22 is a plate-like portion having an inner surface (opposing surface) 22A that faces the covering portion 7B when the covering portion 7B is held, and an outer surface 22B that faces the opposite side to the inner surface 22A. . Specifically, the covering portion holding portion 22 has a second main body 221 connected to the first main body 211 of the core wire holding portion 21 and a pair of covering portion crimping pieces 222 extending from the second main body 221 . Moreover, the covering portion holding portion 22 has an engaging portion 23 extending along the circumferential direction of the covering portion 7B on the inner side surface 22A that is pressed against the covering portion 7B when the covering portion 7B is held.

第二本体２２１は、中心軸Ｃ周りに湾曲し且つ第一本体２１１から並び方向に延びる板状の部位である。 The second main body 221 is a plate-like portion that curves around the central axis C and extends in the alignment direction from the first main body 211 .

一対の被覆部カシメ片２２２は、第二本体２２１上に配置された被覆部７Ｂに向けてそれぞれカシメられることにより、第二本体２２１と共同して被覆部７Ｂを挟持する（図５参照）。これにより、被覆部保持部２２は、電線７の被覆部７Ｂを保持する。このとき、被覆部保持部２２の内側面２２Ａは、被覆部７Ｂの外周面（絶縁部材７２）に押し付けられている。尚、電線７の被保持部７Ｂは、芯線７１が絶縁部材７２によって被覆されている部位である。 The pair of covering portion crimping pieces 222 are respectively crimped toward the covering portion 7B arranged on the second main body 221, thereby sandwiching the covering portion 7B jointly with the second main body 221 (see FIG. 5). Thereby, the covering portion holding portion 22 holds the covering portion 7</b>B of the electric wire 7 . At this time, the inner side surface 22A of the covering portion holding portion 22 is pressed against the outer peripheral surface (the insulating member 72) of the covering portion 7B. The held portion 7B of the electric wire 7 is a portion where the core wire 71 is covered with the insulating member 72 .

これら一対の被覆部カシメ片２２２のそれぞれは、平板状保持部２Ａにおいて、第二本体２２１の幅方向の両端から該幅方向の外側に向けて延びている（図２参照）。本実施形態の圧着端子１では、幅方向の一方側の被覆部カシメ片（第一被覆部カシメ片）２２２Ａと他方側の被覆部カシメ片（第二被覆部カシメ片）２２２Ｂとが、第二本体２２１における並び方向の同じ位置から延びている。 Each of the pair of cover portion crimping pieces 222 extends outward in the width direction from both ends in the width direction of the second main body 221 in the flat holding portion 2A (see FIG. 2). In the crimp terminal 1 of the present embodiment, the covering portion crimping piece (first covering portion crimping piece) 222A on one side in the width direction and the covering portion crimping piece (second covering portion crimping piece) 222B on the other side It extends from the same position in the alignment direction on the main body 221 .

係止部２３は、図３にも示すように、内側面２２Ａにおける当該係止部２３以外の領域（以下、「基準面」と称する。）２２０Ａに対して突出している凸部２３１と、該凸部２３１に隣接する位置において基準面２２０Ａに対して凹んでいる凹部２３２と、を有する。詳しくは、凸部２３１は、外側面２２Ｂの側とは反対側に突出し、凹部２３２は、外側面２２Ｂの側に凹んでいる。 As shown in FIG. 3, the engaging portion 23 includes a convex portion 231 projecting from a region (hereinafter referred to as a "reference surface") 220A other than the engaging portion 23 on the inner surface 22A, and and a concave portion 232 that is concave with respect to the reference surface 220A at a position adjacent to the convex portion 231 . Specifically, the protrusion 231 protrudes toward the side opposite to the outer surface 22B, and the recess 232 recesses toward the outer surface 22B.

ここで、基準面２２０Ａとは、係止部２３の凸部２３１と凹部２３２とを区分けするために基準とした面であり、内側面２２Ａには、係止部２３及び基準面２２０Ａ以外の構成（凹凸等）が含まれていてもよい。また、本実施形態の基準面２２０Ａは、係止部２３と直接接している、即ち、隣接しているが、この構成に限定されず、係止部２３と直接接していない構成であってもよい。 Here, the reference surface 220A is a surface used as a reference for distinguishing between the convex portion 231 and the concave portion 232 of the locking portion 23, and the inner side surface 22A has structures other than the locking portion 23 and the reference surface 220A. (unevenness etc.) may be included. Further, the reference surface 220A of the present embodiment is in direct contact with the locking portion 23, i.e., is adjacent to the locking portion 23, but is not limited to this configuration. good.

本実施形態の係止部２３は、二つの凸部２３１と、一つの凹部２３２と、を有する。これら二つの凸部２３１は、並び方向において凹部２３２の両側に配置されている。詳しくは、二つの凸部２３１のうちの一方の凸部（第一凸部）２３１ａは、凹部２３２の芯線保持部２１側と反対側において該凹部２３２と隣接する。また、二つの凸部２３１のうちの他方の凸部（第二凸部）２３１ｂは、凹部２３２の芯線保持部２１側において該凹部２３２と隣接する。 The locking portion 23 of this embodiment has two convex portions 231 and one concave portion 232 . These two protrusions 231 are arranged on both sides of the recess 232 in the alignment direction. Specifically, one protrusion (first protrusion) 231a of the two protrusions 231 is adjacent to the recess 232 on the opposite side of the recess 232 from the core wire holding section 21 side. The other convex portion (second convex portion) 231b of the two convex portions 231 is adjacent to the concave portion 232 on the side of the core wire holding portion 21 of the concave portion 232 .

この係止部２３において、凹部２３２は、凸部２３１（第一凸部２３１ａ、第二凸部２３１ｂ）より大きい。詳しくは、以下の通りである。図４にも示すように、基準面２２０Ａと直交し且つ並び方向に延びる断面において、凹部２３２の内側領域（内側空間）の断面積（内側領域断面積）Ｓ１は、凸部２３１の断面積（凸部断面積）Ｓ２より大きい。尚、第一凸部２３１ａと第二凸部２３１ｂとは同じ若しくは略同じ形状である。In this locking portion 23, the concave portion 232 is larger than the convex portion 231 (the first convex portion 231a and the second convex portion 231b). Details are as follows. As shown in FIG. 4, in a cross section perpendicular to the reference plane 220A and extending in the alignment direction, the cross-sectional area (inner region cross-sectional area) S1 of the inner region (inner space) of the recess 232 is the cross-sectional area of the protrusion 231. (Convex cross-sectional area) S larger than 2 . The first convex portion 231a and the second convex portion 231b have the same or substantially the same shape.

本実施形態の係止部２３において、この内側領域断面積Ｓ１と凸部断面積Ｓ２との比（以下、「断面積比」と称する。）Ｓ２／Ｓ１は、８０％以上且つ９０％未満である。この断面積比Ｓ２／Ｓ１は、本実施形態においては、凹部２３２を、仮想中心線（断面において最も凹んだ位置を通る仮想中心線）Ｖ１を中心とする線対称な形状と見なし、且つ、凸部２３１を、仮想中心線（断面において最も突出した位置を通る仮想中心線）Ｖ２を中心とする線対称な形状と見なしたときに、凹部２３２の内側領域における仮想中心線Ｖ１より凸部２３１側の領域の面積Ｓ１と、凸部２３１の仮想中心線Ｖ２より凹部２３２側の領域の面積Ｓ２との比によって求められている。尚、凹部２３２も凸部２３１も共に仮想中心線Ｖ１、Ｖ２に対して線対称な図形と見なしているため、断面積比Ｓ２／Ｓ１は、凹部２３２の内側領域全体の断面積と、凸部２３１全体の断面積との比が用いられてもよい。In the locking portion 23 of the present embodiment, the ratio of the cross-sectional area S1 of the inner region to the cross-sectional area S2 of the convex portion (hereinafter referred to as "cross-sectional area ratio") S2 / S1 is 80% or more and less than 90%. In this embodiment, the cross-sectional area ratio S 2 /S 1 considers the recess 232 to be a line-symmetrical shape centered on the virtual center line (the virtual center line passing through the most recessed position in the cross section) V 1 , In addition, when the convex portion 231 is considered to be a line-symmetrical shape centered on the virtual center line (virtual center line passing through the most protruding position in the cross section) V2 , the virtual center line V in the inner region of the concave portion 232 1 to the area S2 of the recess 232 side of the imaginary center line V2 of the protrusion 231 . Since both the concave portion 232 and the convex portion 231 are regarded as lines symmetrical with respect to the imaginary center lines V 1 and V 2 , the cross-sectional area ratio S 2 /S 1 is the cross-sectional area of the entire inner region of the concave portion 232. , and the cross-sectional area of the entire protrusion 231 may be used.

このような凸部２３１と凹部２３２とを含む係止部２３は、内側面２２Ａにおいて、並び方向と交差する方向に延びる。本実施形態の係止部２３は、内側面２２Ａにおいて、並び方向と直交する方向に延びている。また、この係止部２３は、内側面２２Ａにおいて、第一被覆部カシメ片２２２Ａの外側端縁２２２ａから第二本体２２１を通って第二被覆部カシメ片２２２Ｂの外側端縁２２２ｂまで連続して延びている（図２参照）。尚、第一被覆部カシメ片２２２Ａの外側端縁２２２ａは、第二本体２２１の側とは反対側の端縁である。また、第二被覆部カシメ片２２２Ｂの外側端縁２２２ｂは、第二本体２２１の側と反対側の端縁である。 The locking portion 23 including the convex portion 231 and the concave portion 232 extends in a direction intersecting the alignment direction on the inner side surface 22A. The locking portion 23 of this embodiment extends in a direction orthogonal to the alignment direction on the inner side surface 22A. In addition, on the inner side surface 22A, the locking portion 23 extends continuously from the outer edge 222a of the first cover crimping piece 222A through the second main body 221 to the outer edge 222b of the second covering crimping piece 222B. extended (see FIG. 2). Note that the outer edge 222a of the first covering portion crimping piece 222A is the edge on the side opposite to the second main body 221 side. Further, the outer edge 222b of the second covering portion crimping piece 222B is the edge on the side opposite to the second main body 221 side.

本実施形態の内側面２２Ａには、複数の係止部２３が配置されている。図２に示す例では、三つの係止部２３が配置されている。これら複数の係止部２３は、並び方向に間隔をあけて配置されている。隣り合う係止部２３同士は、互いに平行である。 A plurality of locking portions 23 are arranged on the inner side surface 22A of the present embodiment. In the example shown in FIG. 2, three locking portions 23 are arranged. The plurality of locking portions 23 are arranged at intervals in the row direction. Adjacent locking portions 23 are parallel to each other.

図１に戻り、接続部３は、電線保持部２と連接し且つ中心軸Ｃを囲む筒部３１と、筒部３１からそれぞれ延び且つ筒部３１の中心軸Ｃ周りに間隔をあけて並ぶ複数の弾性接触片３２と、を有する。この接続部３は、複数の弾性接触片３２に囲まれた領域に相手側端子ピンが挿入されることによって、該相手側端子ピンと導通可能に接続される。本実施形態の接続部３は、相手側端子ピンと導通可能に嵌合する。 Returning to FIG. 1 , the connection portion 3 includes a cylindrical portion 31 that is connected to the wire holding portion 2 and surrounds the central axis C, and a plurality of connecting portions that extend from the cylindrical portion 31 and are arranged around the central axis C of the cylindrical portion 31 at intervals. and a resilient contact piece 32 of . The connecting portion 3 is electrically connected to the mating terminal pin by inserting the mating terminal pin into the region surrounded by the plurality of elastic contact pieces 32 . The connecting portion 3 of the present embodiment is fitted to the mating terminal pin so as to be electrically conductive.

筒部３１は、中心軸Ｃを囲む筒部本体３１１と、筒部本体３１１から外側に延びる一対のランス３１２と、を有する。 The tubular portion 31 has a tubular portion main body 311 surrounding the central axis C and a pair of lances 312 extending outward from the tubular portion main body 311 .

複数の弾性接触片３２のそれぞれは、中心軸Ｃに沿って延び、複数の弾性接触片３２に囲まれた領域に挿入された相手側端子ピンに押圧されることで弾性変形する。各弾性接触片３２は、相手側端子ピンが挿入されたときに該相手側端子ピンと接触する内側面３２Ａを中心軸Ｃに向けた状態で、筒部３１（筒部本体３１１）から相手側端子ピンの抜去方向（図１における左側）に延びる板状である。 Each of the plurality of elastic contact pieces 32 extends along the central axis C and is elastically deformed by being pressed by a mating terminal pin inserted into a region surrounded by the plurality of elastic contact pieces 32 . Each elastic contact piece 32 has an inner side surface 32A that contacts the mating terminal pin when the mating terminal pin is inserted, and the inner surface 32A is directed toward the central axis C, and the cylindrical portion 31 (cylindrical portion main body 311) is inserted into the mating terminal. It has a plate shape extending in the pin removal direction (left side in FIG. 1).

以上のように構成される圧着端子１は、図５に示すように電線７に接続される。具体的には、以下の通りである。 The crimp terminal 1 configured as described above is connected to the electric wire 7 as shown in FIG. Specifically, it is as follows.

電線７の端部に設けられた露出部７Ａが芯線保持部２１の第一本体２１１の上に配置されると共に、被覆部７Ｂ、詳しくは、被覆部７Ｂにおける露出部７Ａと隣接する部位が被覆部保持部２２の第二本体２２１の上に配置される。ここで、電線７の端部とは、電線７における長手方向の端縁を含む部位であり、露出部７Ａは、露出する芯線７１の束である。 The exposed portion 7A provided at the end of the electric wire 7 is arranged on the first main body 211 of the core wire holding portion 21, and the covering portion 7B, specifically, the portion adjacent to the exposed portion 7A in the covering portion 7B is covered. It is arranged on the second body 221 of the part holding part 22 . Here, the end portion of the electric wire 7 is a portion including the edge of the electric wire 7 in the longitudinal direction, and the exposed portion 7A is a bundle of exposed core wires 71 .

この状態で、芯線保持部２１の複数の導体カシメ片２１２のそれぞれがカシメられる。また、被覆部保持部２２の一対の被覆部カシメ片２２２のそれぞれがカシメられる。このとき、各導体カシメ片２１２がカシメられた後、各被覆部カシメ片２２２がカシメられてもよく、各被覆部カシメ片２２２がカシメられた後、各導体カシメ片２１２がカシメられてもよい。また、各導体カシメ片２１２と、各被覆部カシメ片２２２とが同じタイミングでカシメられてもよい。 In this state, each of the plurality of conductor crimping pieces 212 of the core wire holding portion 21 is crimped. Also, each of the pair of covering portion crimping pieces 222 of the covering portion holding portion 22 is crimped. At this time, after each conductor crimping piece 212 is crimped, each covering portion crimping piece 222 may be crimped, or after each covering portion crimping piece 222 is crimped, each conductor crimping piece 212 may be crimped. . Also, each conductor crimping piece 212 and each covering portion crimping piece 222 may be crimped at the same timing.

以上のように、複数の導体カシメ片２１２のそれぞれと、一対の被覆部カシメ片２２２のそれぞれとがカシメられることで、圧着端子１が電線７に接続される。これにより、圧着端子１付き電線７が完成する。 As described above, the crimp terminal 1 is connected to the electric wire 7 by crimping each of the plurality of conductor crimping pieces 212 and each of the pair of covering portion crimping pieces 222 . Thereby, the electric wire 7 with the crimp terminal 1 is completed.

続いて、圧着端子１の製造方法について説明する。本実施形態の圧着端子１は、導電性を有する帯状の部材（原材料）ｍから図６及び図７に示す製造装置５によって製造される。 Next, a method for manufacturing the crimp terminal 1 will be described. The crimp terminal 1 of the present embodiment is manufactured from a conductive band-shaped member (raw material) m by a manufacturing apparatus 5 shown in FIGS.

製造装置５は、プレス機Ｐに設置された金型である。この製造装置（金型）５は、帯状の部材ｍ（図８参照）を所定の形状に打ち抜き加工する打ち抜き部５１と、打ち抜き部５１において打ち抜き加工された部材ｍ１（第一加工部材：図８参照）に係止部２３を形成する係止部形成部５２と、係止部２３が形成された部材ｍ２（第二加工部材：図８参照）に曲げ等の成形を行って圧着端子形状を完成させる曲げ等成形部５３と、を備える。The manufacturing device 5 is a mold installed in the press P. As shown in FIG. This manufacturing apparatus (mold) 5 includes a punching part 51 for punching a belt-shaped member m (see FIG. 8) into a predetermined shape, and a member m 1 (first processed member: FIG. 8) and the member m 2 (second processed member: see FIG. 8) formed with the locking portion 23 and the member m 2 formed with the locking portion 23 (see FIG. 8) are formed by bending or the like to form the crimp terminal. a bend or other forming portion 53 to complete the shape.

打ち抜き部５１は、圧着端子１に対応する形状に帯状の部材ｍを打ち抜く。この打ち抜き部５１において打ち抜かれた状態の第一加工部材ｍ１では、各圧着端子に相当する端子相当部１ａの電線保持部２側の端部と接続部３側の端部とが帯状の部位（キャリア）ｍｃにつながった状態となっている。The punching part 51 punches out a belt-like member m into a shape corresponding to the crimp terminal 1 . In the first processed member m1 that has been punched out by the punching part 51, the terminal-corresponding part 1a corresponding to each crimp terminal has a strip-shaped part at the end on the side of the wire holding part 2 and the end on the side of the connection part 3. (Carrier) It is in a state of being connected to mc.

係止部形成部５２は、第一加工部材ｍ１の端子相当部１ａにおける被覆部保持部２２であって係止部２３が形成される前の平らな状態の被覆部保持部２２の内側面（対向面）２２Ａに対して、該内側面２２Ａに押し当てられた加工刃６１を被覆部保持部２２における周方向に相当する方向に沿って移動させることにより、係止部２３を形成する（図１１参照）。尚、被覆部保持部２２における周方向に相当する方向とは、電線７の被覆部７Ｂを保持したときに該電線７の周方向に相当する方向であり、図８のに示す例では左右方向である。The locking portion forming portion 52 is the covering portion holding portion 22 in the terminal-corresponding portion 1a of the first processed member m1 , and is the inner surface of the covering portion holding portion 22 in a flat state before the locking portion 23 is formed. The locking portion 23 is formed by moving the processing blade 61 pressed against the inner side surface 22A of the (opposing surface) 22A along a direction corresponding to the circumferential direction of the covering portion holding portion 22 ( See Figure 11). The direction corresponding to the circumferential direction of the covering portion holding portion 22 is the direction corresponding to the circumferential direction of the electric wire 7 when the covering portion 7B of the electric wire 7 is held. is.

具体的に、係止部形成部５２は、図９及び図１０に示すような、加工刃６１を有する可動部材６を備える。この可動部材６は、端子相当部１ａに係止部２３を形成するときに、端子相当部１ａにおける矩形の被覆部保持部２２の長尺方向で且つ内側面２２Ａと平行（以下、「係止部形成方向」とも称する。：図１１において矢印で示す方向）に可動する。 Specifically, the locking portion forming portion 52 includes a movable member 6 having a processing blade 61 as shown in FIGS. 9 and 10 . The movable member 6 extends in the longitudinal direction of the rectangular cover holding portion 22 in the terminal-equivalent portion 1a and parallel to the inner side surface 22A (hereinafter referred to as "locking") when forming the engaging portion 23 in the terminal-equivalent portion 1a. Also referred to as "part forming direction": the direction indicated by the arrow in FIG. 11).

この可動部材６は、加工刃６１が配置される傾斜面６２を有する。傾斜面６２は、係止部形成方向に対して上り勾配となっている。本実施形態の傾斜面６２は、係止部形成方向に対して傾斜した方向に真っ直ぐ延びる面である。 This movable member 6 has an inclined surface 62 on which a processing blade 61 is arranged. The inclined surface 62 has an upward slope with respect to the direction in which the engaging portion is formed. The inclined surface 62 of the present embodiment is a surface extending straight in a direction inclined with respect to the locking portion formation direction.

加工刃６１における少なくとも内側面２２Ａに押し当てられる部位は、係止部形成方向に対して上り勾配となるように延びている。本実施形態の加工刃６１は、可動部材６の傾斜面６２と平行に真っ直ぐ延びている。また、加工刃６１の横断面の形状は、該横断面の中心線Ｃ２を中心にして線対称である（図１２参照）。尚、本実施形態の加工刃６１の角度は、６０°（中心線Ｃ２から３０°）である。At least the portion of the processing blade 61 that is pressed against the inner side surface 22A extends upwardly with respect to the locking portion formation direction. The processing blade 61 of this embodiment extends straight in parallel with the inclined surface 62 of the movable member 6 . The shape of the cross section of the machining blade 61 is symmetrical about the center line C2 of the cross section (see FIG. 12). The angle of the processing blade 61 of this embodiment is 60° (30° from the center line C2 ).

本実施形態の加工刃６１は、可動部材６の傾斜面６２に複数（本実施形態の例では三つ）配置されている。即ち、可動部材６は、複数の加工刃６１を有する。これら複数の加工刃６１は、互いに平行である。 A plurality (three in the example of the present embodiment) of the processing blades 61 of the present embodiment are arranged on the inclined surface 62 of the movable member 6 . That is, the movable member 6 has a plurality of working blades 61 . These plurality of machining blades 61 are parallel to each other.

以上の可動部材６は、リンク機構５２０（図７参照）によって、第一加工部材ｍ１の面と垂直な方向（本実施形態の例では、下方向）の力が水平方向に変換されることにより、係止部形成方向に移動（可動）する。この移動によって、図１１及び図１２に示されるように、各加工刃６１が内側面２２Ａに押し込まれた状態で該内側面２２Ａに沿って移動する。これにより、加工刃６１の数に応じた数の係止部２３が、端子相当部１ａにおける被覆部保持部２２の内側面２２Ａに形成される。In the movable member 6 described above, the link mechanism 520 (see FIG. 7) converts the force in the direction perpendicular to the surface of the first processing member m1 (in the example of the present embodiment, the downward direction) into the horizontal direction. As a result, it moves (moves) in the locking portion forming direction. By this movement, as shown in FIGS. 11 and 12, each processing blade 61 moves along the inner surface 22A while being pushed into the inner surface 22A. As a result, a number of locking portions 23 corresponding to the number of machining blades 61 are formed on the inner side surface 22A of the covering portion holding portion 22 in the terminal-corresponding portion 1a.

具体的には、可動部材６の係止部形成方向への移動によって、複数の加工刃６１のそれぞれが、被覆部保持部２２の長尺方向における一方の端面２２ａ（図８参照）から入って他方の端面２２ｂ（図８参照）から抜けるまで、各加工刃６１が内側面２２Ａに押し当てられた状態で移動する。具体的には、各加工刃６１の一部、詳しくは、加工刃６１の延びる方向における下方側の端部が内側面２２Ａに食い込んだ状態で移動する。このとき、各加工刃６１が内側面２２Ａを削らず、可動部材６は、内側面２２Ａ上を滑るように移動する。 Specifically, by moving the movable member 6 in the locking portion formation direction, each of the plurality of processing blades 61 enters from one end surface 22a (see FIG. 8) of the covering portion holding portion 22 in the longitudinal direction. Each processing blade 61 moves while being pressed against the inner side surface 22A until it is removed from the other end surface 22b (see FIG. 8). Specifically, a part of each processing blade 61, more specifically, the end on the lower side in the extending direction of the processing blade 61, moves while biting into the inner surface 22A. At this time, each processing blade 61 does not cut the inner side surface 22A, and the movable member 6 slides on the inner side surface 22A.

このとき、可動部材６の移動に伴って各加工刃６１が移動することで、対応する加工刃６１が通過する位置において、係止部２３の凹部２３２が形成されつつ、該被覆部保持部２２における凹部２３２の形成される領域にあった部位が加工刃６１の移動に伴って該凹部２３２と隣接する位置に押し退けられて該部位（隣接する位置）が盛り上がることで係止部２３の凸部２３１も形成される（図１１参照）。即ち、凹部２３２の形成と同時に二つの凸部２３１も形成される。尚、本実施形態では、被覆部保持部２２における凹部２３２の形成される領域にあった部位が加工刃６１の移動に伴って係止部形成方向と直交する方向に押し退けられて該部位が盛り上がることで係止部２３の凸部２３１が形成される。 At this time, each processing blade 61 moves along with the movement of the movable member 6, so that the recess 232 of the locking portion 23 is formed at the position through which the corresponding processing blade 61 passes, and the covering portion holding portion 22 As the processing blade 61 moves, the part that was in the area where the recess 232 is formed is pushed away to a position adjacent to the recess 232, and the part (adjacent position) rises, so that the protrusion of the locking part 23 231 are also formed (see FIG. 11). That is, the two protrusions 231 are formed simultaneously with the formation of the recess 232 . In the present embodiment, the portion of the coating portion holding portion 22 that was in the area where the recess 232 is formed is pushed away in the direction perpendicular to the locking portion forming direction as the processing blade 61 moves, and the portion rises. Thus, the convex portion 231 of the locking portion 23 is formed.

曲げ等成形部５３は、係止部２３が打ち抜き加工された第二加工部材ｍ２に対し、接続部３側のキャリアｍｃのせん断及び各端子相当部１ａに曲げ等の成形を行うことによって圧着端子１を完成させる。The bending or other forming part 53 is crimped by shearing the carrier mc on the side of the connecting part 3 and forming such as bending on each terminal corresponding part 1a of the second processed member m2 in which the locking part 23 is punched. Complete Terminal 1.

その後、完成した圧着端子１がリールＲに巻き取られる（図６参照）。 After that, the completed crimp terminal 1 is wound around the reel R (see FIG. 6).

以上のように製造（形成）された圧着端子１によれば、被覆部保持部２２が電線７の被覆部７Ｂを保持したときに係止部２３が被覆部７Ｂに外側から押し付けられることで、図１３に示すように、凸部２３１が絶縁部材７２に食い込みつつ該凸部２３１によって芯線７１側に押圧された絶縁部材７２の一部が該凸部２３１と隣接する凹部２３２側に逃げることができる（図１３の凹部２３２側に向かう矢印参照）。このとき、凸部２３１と隣接する位置に凹部２３２が配置されていない、即ち、凹部２３２の位置に基準面２２０Ａが配置されている構成では、凹部２３２側に逃げることができる絶縁部材７２の量が十分ではないため、凸部２３１の食い込みにより生じる応力集中を十分には抑えられない。しかし、凸部２３１に隣接して凹部２３２が設けられることで、前記応力集中を抑えることができる程度の凹部２３２側への絶縁部材７２の逃げ、詳しくは、凸部２３１に押圧された絶縁部材７２の逃げが許容される。 According to the crimp terminal 1 manufactured (formed) as described above, when the covering portion holding portion 22 holds the covering portion 7B of the electric wire 7, the locking portion 23 is pressed against the covering portion 7B from the outside. As shown in FIG. 13, while the protrusion 231 bites into the insulating member 72, a part of the insulating member 72 pressed toward the core wire 71 by the protrusion 231 can escape to the recess 232 adjacent to the protrusion 231. (See the arrow pointing toward the concave portion 232 in FIG. 13). At this time, in the configuration in which the concave portion 232 is not arranged at the position adjacent to the convex portion 231, that is, the reference surface 220A is arranged at the position of the concave portion 232, the amount of the insulating member 72 that can escape to the concave portion 232 side is is not sufficient, stress concentration caused by biting of the projection 231 cannot be sufficiently suppressed. However, by providing the concave portion 232 adjacent to the convex portion 231, the insulating member 72 escapes to the side of the concave portion 232 to the extent that the stress concentration can be suppressed. 72 escapes are allowed.

即ち、引張強度を確保するために凸部２３１を絶縁部材７２に十分に食い込ませると、絶縁部材７２における凸部２３１に押された部位の応力集中が大きくなり過ぎ、電線７に引張力が加わったときに前記応力集中が大きくなり過ぎた部位から絶縁部材７２が破れ易くなるが、凸部２３１と隣接する位置に凹部２３２を設けて凸部２３１に押圧された絶縁部材７２の一部を該凹部２３２側に逃がすことで前記応力集中が大きくなり過ぎることを防ぐことができる。 That is, if the protrusions 231 are sufficiently bitten into the insulating member 72 in order to ensure tensile strength, the stress concentration at the portion of the insulating member 72 pressed by the protrusions 231 becomes too large, and a tensile force is applied to the electric wire 7 . Insulating member 72 is likely to break from the portion where the stress concentration becomes excessively large when the stress concentration is excessively large. Releasing to the concave portion 232 side can prevent the stress concentration from becoming too large.

このように、本実施形態の圧着端子１では、凸部２３１の食い込みによる過度な応力集中によって絶縁部材７２が破れ易くなることを防ぎつつ、凸部２３１を絶縁部材７２に十分に食い込ませることができる。その結果、被覆部保持部２２における引張強度を好適に向上させることができる。 As described above, in the crimp terminal 1 of the present embodiment, the protrusions 231 can sufficiently bite into the insulating member 72 while preventing the insulating member 72 from being easily broken due to excessive stress concentration due to the bite of the protrusions 231 . can. As a result, the tensile strength of the covering portion holding portion 22 can be favorably improved.

しかも、本実施形態の係止部２３では、凸部２３１（第一凸部２３１ａ、第二凸部２３１ｂ：図２及び図３参照）が凹部２３２の両側に配置されているため、絶縁部材７２に食い込む凸部２３１の数が十分に確保される。これにより、係止部２３において凹部２３２の片側だけに凸部２３１が配置される構成に比べ、引張強度が向上する。 Moreover, in the locking portion 23 of the present embodiment, since the projections 231 (the first projection 231a and the second projection 231b: see FIGS. 2 and 3) are arranged on both sides of the recess 232, the insulating member 72 A sufficient number of protrusions 231 that bite into are secured. As a result, the tensile strength is improved compared to the configuration in which the projection 231 is arranged only on one side of the recess 232 in the locking portion 23 .

また、本実施形態の係止部２３では、凹部２３２が、第一凸部２３１ａの芯線保持部２１側において該第一凸部２３１ａと隣接している。このように、第一凸部２３１ａに押圧された絶縁部材７２の一部を芯線保持部２１側に逃がす構成とすることで、引張力、即ち、芯線保持部２１から被覆部保持部２２に向かう方向の力が電線７に加わったときに、絶縁部材７２の第一凸部２３１ａへの引っ掛かりがより大きくなる。このため、引張強度がより向上する。 Further, in the locking portion 23 of the present embodiment, the concave portion 232 is adjacent to the first convex portion 231a on the core wire holding portion 21 side of the first convex portion 231a. In this way, a part of the insulating member 72 pressed by the first convex portion 231a is released to the core wire holding portion 21 side, so that the tensile force, that is, from the core wire holding portion 21 toward the covering portion holding portion 22 When a directional force is applied to the electric wire 7, the insulating member 72 is more likely to be caught on the first convex portion 231a. Therefore, the tensile strength is further improved.

また、本実施形態の圧着端子１では、内側面２２Ａ（詳しくは、基準面２２０Ａ）と直交し且つ並び方向に延びる断面において、内側領域断面積Ｓ１が、凸部断面積Ｓ２より大きい（図４参照）。このように、凹部２３２の内側領域の断面積Ｓ１が該凹部２３２と隣接する凸部２３１の断面積Ｓ２より大きいことで、凸部２３１に押圧された絶縁部材７２の一部が凹部２３２側に逃げたときの絶縁部材７２における応力集中、詳しくは、絶縁部材７２における凸部２３１に押圧されている部位の応力集中が十分に抑えられる。これにより、電線７に引張力が加わったときの被覆部保持部２２における絶縁部材７２の破れがより効果的に防がれる。In addition, in the crimp terminal 1 of the present embodiment, in a cross section orthogonal to the inner side surface 22A (specifically, the reference surface 220A) and extending in the alignment direction, the inner region cross-sectional area S1 is larger than the convex cross-sectional area S2 ( See Figure 4). Since the cross-sectional area S1 of the inner region of the recess 232 is larger than the cross-sectional area S2 of the protrusion 231 adjacent to the recess 232, a portion of the insulating member 72 pressed by the protrusion 231 is pushed by the recess 232. The stress concentration in the insulating member 72 when the insulating member 72 escapes to the side, more specifically, the stress concentration in the portion of the insulating member 72 pressed by the convex portion 231 can be sufficiently suppressed. As a result, breakage of the insulating member 72 at the covering portion holding portion 22 when a tensile force is applied to the electric wire 7 can be more effectively prevented.

また、本実施形態の圧着端子１では、断面積比Ｓ２／Ｓ１が、８０％以上且つ９０％未満である。この構成によれば、凸部２３１に押圧された絶縁部材７２の一部が凹部２３２側に逃げる（移動する）ことで、凹部２３２と二つの凸部２３１ａ、２３１ｂと電線７とで規定される領域（図１３の符号αで示すドットが付された範囲参照）を満たす絶縁部材７２が適度な圧縮状態となる。これにより、該領域を満たしている絶縁部材７２が芯線７１に押し付けられて密着する。このため、電線７（絶縁部材７２）に引張力が加わったときに被覆部保持部２２に保持された電線７（絶縁部材７２）に加わる力の一部を、芯線７１を通じて芯線保持部２１にも受けさせることができる。その結果、被覆部保持部２２での絶縁部材７２の破れがより好適に抑えられる。Moreover, in the crimp terminal 1 of this embodiment, the cross-sectional area ratio S2 / S1 is 80% or more and less than 90%. According to this configuration, a part of the insulating member 72 pressed by the convex portion 231 escapes (moves) toward the concave portion 232, so that the insulating member 72 is defined by the concave portion 232, the two convex portions 231a and 231b, and the electric wire 7. The insulating member 72 that fills the region (see the dotted range indicated by symbol α in FIG. 13) is in a moderately compressed state. As a result, the insulating member 72 filling the region is pressed against the core wire 71 and adheres thereto. Therefore, when tensile force is applied to the electric wire 7 (insulating member 72), part of the force applied to the electric wire 7 (insulating member 72) held by the covering portion holding portion 22 is transferred to the core wire holding portion 21 through the core wire 71. can also be accepted. As a result, breakage of the insulating member 72 at the covering portion holding portion 22 is suppressed more favorably.

即ち、被覆部保持部２２における絶縁部材７２の芯線７１への押し付けが、凸部２３１が絶縁部材７２に食い込むことによる押し付けに加え、隣接する部位、具体的には、凹部２３２と二つの凸部２３１ａ、２３１ｂと電線７とで規定される領域αを満たす絶縁部材７２も圧縮状態となっていることで芯線７１に押し付けられ、これにより、絶縁部材７２が長手方向の広い範囲で芯線７１に密着することとなる。このため、電線７（絶縁部材７２）に引張力が加わったときに、電線７の被覆部保持部２２に保持された部位に加わる力の一部を、芯線７１を通じて芯線保持部２１にも受けさせる（分担させる）ことができる。尚、図１３において、模式的に、凸部２３１の押し付けによって芯線７１と絶縁部材７２とが密着する領域（ハッチングで示す範囲）をβ１で示し、前記領域αを満たす絶縁部材７２が圧縮されていることで芯線７１と絶縁部材７２とが密着する領域（β１と異なるハッチングで示す範囲）をβ２で示す。That is, the pressing of the insulating member 72 against the core wire 71 in the covering portion holding portion 22 is not only the pressing caused by the protrusion 231 biting into the insulating member 72, but also the adjacent portions, specifically, the recess 232 and the two protrusions. The insulating member 72 filling the area α defined by 231a, 231b and the electric wire 7 is also pressed against the core wire 71 by being in a compressed state, whereby the insulating member 72 is in close contact with the core wire 71 over a wide range in the longitudinal direction. It will be done. Therefore, when a tensile force is applied to the electric wire 7 (insulating member 72), part of the force applied to the portion of the electric wire 7 held by the covering portion holding portion 22 is also received by the core wire holding portion 21 through the core wire 71. It is possible to let (share). In FIG. 13, the area (the area indicated by hatching) where the core wire 71 and the insulating member 72 are brought into close contact with each other by pressing the convex portion 231 is schematically indicated by β1 , and the insulating member 72 satisfying the area α is compressed. A region (a hatched area different from β1 ) in which the core wire 71 and the insulating member 72 are in close contact with each other due to the contact is indicated by β2 .

また、本実施形態の係止部２３では、凸部２３１（第二凸部２３１ｂ）が凹部２３２の芯線保持部２１側にも配置されている。このため、該凸部２３１（第二凸部２３１ｂ）の食い込みによって押圧された絶縁部材７２の一部も前記領域αに逃げ、これにより、前記領域αを満たす絶縁部材７２が十分に圧縮された状態となる。その結果、該領域αを満たす絶縁部材７２の芯線７１への密着力（図１３のβ２で示す範囲の密着力）が十分に大きくなる。Further, in the locking portion 23 of the present embodiment, the convex portion 231 (second convex portion 231b) is also arranged on the core wire holding portion 21 side of the concave portion 232 . Therefore, part of the insulating member 72 pressed by the biting of the convex portion 231 (second convex portion 231b) also escapes to the region α, whereby the insulating member 72 filling the region α is sufficiently compressed. state. As a result, the adhesion of the insulating member 72 to the core wire 71 (adhesion in the range indicated by β2 in FIG. 13), which fills the area α, becomes sufficiently large.

また、本実施形態の圧着端子１の製造方法では、凹部２３２を形成しつつ、端子相当部１ａ（被覆部保持部２２）における凹部２３２の形成された領域にあった部位を該凹部２３２と隣接する位置に押し退けて凸部２３１を形成する（即ち、係止部２３を形成する）。これにより、凹部２３２を形成する部位を削り取る場合に比べ、加工刃６１を内側面（対向面）２２Ａに押し当てた状態で移動させるときの抵抗が抑えられ、その結果、より薄い部材に対して係止部２３を形成することができる。 In addition, in the method of manufacturing the crimp terminal 1 of the present embodiment, while the recess 232 is formed, the portion of the terminal-corresponding portion 1a (coating portion holding portion 22) that was in the region where the recess 232 was formed is adjacent to the recess 232. The protrusion 231 is formed by pushing it away to a position where it is aligned (that is, the locking portion 23 is formed). As a result, the resistance when moving the processing blade 61 in a state of being pressed against the inner surface (opposing surface) 22A is suppressed compared to the case where the portion forming the recess 232 is scraped off. A locking portion 23 can be formed.

詳しくは、バイト等の引っ掻き部材による削りや引っ掻きによって係止部２３（凹部２３２）を形成する場合には、爪を引っ掛けた状態で引っ掻き部材等を移動さるときの抵抗が大きい。このため、薄い部材に対して係止部２３（凹部２３２）を形成する場合、破れや変形等の損傷が生じ易い。しかし、本実施形態の係止部形成部５２のように、削り等と異なって鋭利な加工刃６１を内側面２２Ａに押し当てて滑らすように移動させて係止部２３（凹部２３２）を形成することにより、可動部材６の移動の際の抵抗が抑えられる。これにより、係止部２３を形成する際の前記破れ等の損傷が生じ難くなり、その結果、より薄い部材に対して係止部２３を形成することができる。 Specifically, when the locking portion 23 (recessed portion 232) is formed by scraping or scratching with a scratching member such as a cutting tool, resistance is great when the scratching member or the like is moved while the nail is hooked. Therefore, when forming the locking portion 23 (recessed portion 232) on a thin member, damage such as breakage or deformation is likely to occur. However, as in the locking portion forming portion 52 of the present embodiment, the locking portion 23 (recessed portion 232) is formed by pressing the sharp processing blade 61 against the inner surface 22A and slidingly moving it, unlike shaving or the like. By doing so, resistance during movement of the movable member 6 can be suppressed. As a result, damage such as breakage is less likely to occur when forming the engaging portion 23, and as a result, the engaging portion 23 can be formed on a thinner member.

例えば、本実施形態の圧着端子１の製造方法によれば、凹部２３２の基準面２２０Ａからの深さが板厚の３０％程度となる係止部２３を板厚が０．５ｍｍ以下の部材に対して形成することができる。しかも、係止部２３を形成する際に、可動部材６の移動の際の抵抗が十分に抑えられているため、破れや変形等が生じ難い。これにより、圧着端子１の生産効率の低下（廃棄となる製品の数）が十分に抑えられる。これに対し、バイト等の引っ掻き部材によって板厚が０．５ｍｍ以下の部材に対して係止部２３を形成しようとすると、削り等の際の抵抗によって破れや変形等が生じ易く、圧着端子１の生産効率が著しく低下する。 For example, according to the method of manufacturing the crimp terminal 1 of the present embodiment, the locking portion 23, which has a depth of about 30% of the plate thickness from the reference surface 220A of the concave portion 232, is made of a member having a plate thickness of 0.5 mm or less. can be formed against Moreover, since the resistance during the movement of the movable member 6 is sufficiently suppressed when forming the engaging portion 23, it is difficult for breakage or deformation to occur. As a result, the decrease in the production efficiency of the crimp terminal 1 (the number of discarded products) can be sufficiently suppressed. On the other hand, if an attempt is made to form the engaging portion 23 on a member having a plate thickness of 0.5 mm or less with a scraping member such as a cutting tool, the crimp terminal 1 is likely to break or deform due to resistance during scraping. production efficiency is significantly reduced.

板状の部材に係止部２３が形成された後に該部材が被覆部保持部２２の形状に打ち抜かれると、係止部２３の延びる方向（係止部形成方向）の端縁にある係止部２３の形状が潰れる。しかし、本実施形態の圧着端子１の製造方法のように、端面２２ａ、２２ｂが形成された状態、即ち、被覆部保持部２２（端面２２ａ、２２ｂ）の形状が形成された状態で一方の端面２２ａ又は該端面２２ａと内側面２２Ａとによって構成される角部（エッジ）から加工刃６１が入って他方の端面２２ｂから抜けるまで移動することで、係止部２３の両端が潰れていない状態で圧着端子１を製造することができる。 After the engaging portion 23 is formed on the plate-like member, when the member is punched into the shape of the covering portion holding portion 22, the engaging portion 23 at the end edge in the direction in which the engaging portion 23 extends (in the direction of forming the engaging portion) is removed. The shape of the portion 23 is crushed. However, as in the method of manufacturing the crimp terminal 1 of the present embodiment, one end face is formed in a state in which the end faces 22a and 22b are formed, that is, in a state in which the shape of the covering portion holding portion 22 (end faces 22a and 22b) is formed. 22a or a corner (edge) formed by the end face 22a and the inner side face 22A, the machining blade 61 enters the other end face 22b and moves until it exits from the other end face 22b. The crimp terminal 1 can be manufactured.

また、本実施形態の圧着端子１の製造方法では、各加工刃６１における少なくとも内側面２２Ａに押し当てられる部位は、移動方向（係止部形成方向）に対して上り勾配となるように延びている。このため、各加工刃６１を内側面２２Ａに押し当てた状態で移動させるときの抵抗がより抑えられ、これにより、より薄い部材に対して係止部２３を形成することが可能となる。 In addition, in the method of manufacturing the crimp terminal 1 of the present embodiment, at least the portion of each processing blade 61 that is pressed against the inner side surface 22A extends upwardly with respect to the moving direction (locking portion forming direction). there is Therefore, the resistance when moving each processing blade 61 in a state of being pressed against the inner surface 22A is further suppressed, thereby making it possible to form the locking portion 23 on a thinner member.

また、本実施形態の圧着端子１の製造方法によれば、係止部２３が形成される際に、加工刃６１を内側面２２Ａに押し当てて該内側面２２Ａ上を滑らすだけなので削り屑等が生じない、若しくは、極めて僅かしか生じない。このため、係止部２３が形成された直後の工程においてプレス加工等が行われても、前記削り屑等に起因する傷等の損傷が生じ難い。これにより、一つの金型内において係止部２３の形成工程と、プレス工程とを行うことが可能となる。 Further, according to the method of manufacturing the crimp terminal 1 of the present embodiment, when the locking portion 23 is formed, the machining blade 61 is simply pressed against the inner surface 22A and slid on the inner surface 22A, so that shavings and the like are removed. does not occur or occurs very little. Therefore, even if press working or the like is performed in a process immediately after the engagement portion 23 is formed, damage such as scratches caused by the shavings or the like is unlikely to occur. As a result, it is possible to perform the forming process of the engaging portion 23 and the pressing process in one mold.

ここで、本実施形態の圧着端子１が電線７に接続された際の効果を確認するために、以下の実験を行った。 Here, in order to confirm the effect when the crimp terminal 1 of this embodiment is connected to the electric wire 7, the following experiment was conducted.

本実施形態の圧着端子１（被覆部保持部２２に係止部２３が形成されている圧着端子１）と、被覆部保持部２２に係止部がない点以外は、本実施形態の圧着端子１と同じ構成の圧着端子（対比用端子）と、をそれぞれ固定した状態で、各圧着端子に接続された電線７を該圧着端子から離れる方向（中心軸Ｃ方向：図５に示す例では下方側）に１５０ｍｍ／ｍｉｎで引っ張る。そして、電線保持部２によって保持されている部位（被覆部７Ｂ）の絶縁部材７２に破れ等が発生したときの引張力の大きさを測定した。尚、実験で用いた圧着端子１及び対比用端子は、φ３．０の圧着端子である。また、実験で用いた電線７のφは、１.１ｍｍであり、芯線７１は、カーボン繊維であり、絶縁部材（シース）は、エラストマーである。 The crimp terminal 1 of the present embodiment (the crimp terminal 1 in which the locking portion 23 is formed in the covering portion holding portion 22) and the crimp terminal of the present embodiment except that the covering portion holding portion 22 has no locking portion. A crimp terminal (comparison terminal) having the same configuration as that of 1 is fixed, and the electric wire 7 connected to each crimp terminal is moved away from the crimp terminal (center axis C direction: downward in the example shown in FIG. 5) side) at 150 mm/min. Then, the magnitude of the tensile force was measured when the insulating member 72 at the portion (coating portion 7B) held by the wire holding portion 2 was broken. The crimp terminal 1 and the comparison terminal used in the experiment are crimp terminals of φ3.0. The wire 7 used in the experiment has a diameter of 1.1 mm, the core wire 71 is made of carbon fiber, and the insulating member (sheath) is made of elastomer.

その測定結果を以下の表１及び表２に示す。表１は、係止部２３が形成された圧着端子１を用いた実験結果である。この実験で用いられた圧着端子１の係止部２３における断面積比Ｓ２／Ｓ１は、８０．３％である。また、表２は、係止部のない対比用端子を用いた実験結果である。各表における「プレスの押込量」とは、被覆部カシメ片２２２をカシメるときに、被覆部カシメ片２２２が電線７の被覆部７Ｂに接してから、さらにプレスによって第二本体２２１側に押し込んだ量（単位はｍｍ）である。

Figure 0007270939000001
Figure 0007270939000002
 The measurement results are shown in Tables 1 and 2 below. Table 1 shows the results of experiments using the crimp terminal 1 having the engaging portion 23 formed therein. The cross-sectional area ratio S 2 /S 1 of the locking portion 23 of the crimp terminal 1 used in this experiment is 80.3%. Also, Table 2 shows the results of an experiment using a reference terminal without a locking portion. The "push-in amount of the press" in each table means that when the covering crimping piece 222 is crimped, the covering crimping piece 222 is in contact with the covering portion 7B of the electric wire 7, and then further pushed toward the second main body 221 by pressing. is the amount (unit is mm).
Figure 0007270939000001
Figure 0007270939000002

これら表１及び表２から、被覆部保持部２２に係止部２３を設けることで、通常の電線（例えば、芯線が銅等の金属で、絶縁部材がポリ塩化ビニル（ＰＶＣ）の電線）よりも芯線７１に対する絶縁部材（シース）７２の密着力が小さい電線７が用いられても、圧着端子１と電線７との接続部位（電線保持部２）において十分な引っ張り強度が確保できることが分かる。 From these Tables 1 and 2, by providing the locking portion 23 in the covering portion holding portion 22, the normal electric wire (for example, the electric wire whose core wire is metal such as copper and whose insulating member is polyvinyl chloride (PVC)) It can be seen that sufficient tensile strength can be ensured at the connection portion (wire holding portion 2) between the crimp terminal 1 and the wire 7 even if the wire 7 with the insulating member (sheath) 72 having a small adhesion force to the core wire 71 is used.

尚、本発明に係る圧着端子、前記圧着端子付き電線、及び前記圧着端子の製造方法は、上記実施形態の構成に限定されるものではない。また、本発明に係る圧着端子、前記圧着端子付き電線、及び前記圧着端子の製造方法は、上記した作用効果に限定されるものでもない。本発明に係る圧着端子、前記圧着端子付き電線、及び前記圧着端子の製造方法装置は、本発明の要旨を逸脱しない範囲で種々変更が可能である。 The crimp terminal, the electric wire with the crimp terminal, and the method for manufacturing the crimp terminal according to the present invention are not limited to the configurations of the above embodiments. Moreover, the crimp terminal, the electric wire with the crimp terminal, and the method for manufacturing the crimp terminal according to the present invention are not limited to the above-described effects. Various modifications can be made to the crimp terminal, the electric wire with the crimp terminal, and the apparatus for manufacturing the crimp terminal according to the present invention without departing from the gist of the present invention.

上記実施形態の圧着端子１では、複数の係止部２３が被覆部保持部２２に配置されているが、この構成に限定されない。被覆部保持部２２に配置される係止部２３は、一つでもよい。 In the crimp terminal 1 of the above-described embodiment, a plurality of locking portions 23 are arranged in the covering portion holding portion 22, but the configuration is not limited to this. The number of locking portions 23 arranged in the covering portion holding portion 22 may be one.

また、例えば図１４に示すように、被覆部保持部２２が、少なくとも一つの係止部２３と、少なくとも一つの凹凸部２３Ａと、を有していてもよい。この凹凸部２３Ａは、係止部２３と同様に、基準面２２０Ａに対して突出する凸部、及び該凸部と隣接し且つ基準面２２０Ａに対して凹む凹部を有する。これら凸部及び凹部は、内側面２２Ａにおいて並び方向と交差する方向に延びているが、断面積比Ｓ２／Ｓ１は、係止部２３のような８０％以上且つ９０％未満でなくてもよい。尚、上記実施形態の係止部２３における凹部２３２の深さは、板厚の３０％程度であるが、図１４に示す凹凸部２３Ａにおける凹部の深さは、係止部２３の凹部２３２より浅い。このように被覆部保持部２２に少なくとも一つの係止部２３と少なくとも一つの凹凸部２３Ａとが並ぶ場合、芯線保持部２１から離れる方向側の端に係止部２３が配置されることが好ましい。かかる位置が、電線７に引張力が加わったときに、最も絶縁部材７２が破れやすくなるからである。Further, for example, as shown in FIG. 14, the covering portion holding portion 22 may have at least one engaging portion 23 and at least one uneven portion 23A. Like the engaging portion 23, the uneven portion 23A has a convex portion protruding from the reference surface 220A and a concave portion adjacent to the convex portion and recessed from the reference surface 220A. These protrusions and recesses extend in the direction intersecting the alignment direction on the inner surface 22A, but the cross-sectional area ratio S 2 /S 1 must be 80% or more and less than 90% like the locking portion 23. good too. The depth of the concave portion 232 in the locking portion 23 of the above-described embodiment is about 30% of the plate thickness, but the depth of the concave portion 23A in the uneven portion 23A shown in FIG. shallow. When at least one engaging portion 23 and at least one concave-convex portion 23A are arranged side by side in the covering portion holding portion 22 in this way, it is preferable that the engaging portion 23 is arranged at the end on the side away from the core wire holding portion 21 . . This is because the insulating member 72 is most likely to break at such a position when a tensile force is applied to the electric wire 7 .

また、係止部２３の凹部２３２の具体的な深さは、限定されない。上記実施形態の係止部２３における凹部２３２の深さは、板厚の３０％程度であるが、より浅くてもよく、より深くてもよい。 Moreover, the specific depth of the concave portion 232 of the locking portion 23 is not limited. The depth of the concave portion 232 in the locking portion 23 of the above embodiment is about 30% of the plate thickness, but it may be shallower or deeper.

また、上記実施形態の係止部２３は、連続的に延びているが、この構成に限定されない。係止部２３は、断続的に延びていてもよい。また、上記実施形態の係止部２３は、被覆部保持部２２における第一被覆部カシメ片２２２Ａの外側端縁２２２ａから第二被覆部カシメ片２２２Ｂの外側端縁２２２ｂまで延びているが、この構成に限定されない。係止部２３は、第一被覆部カシメ片２２２Ａの外側端縁２２２ａから第二被覆部カシメ片２２２Ｂの外側端縁２２２ｂまでの間における一部の領域（範囲）に配置されていてもよい。 Moreover, although the locking portion 23 of the above-described embodiment extends continuously, it is not limited to this configuration. The locking portion 23 may extend intermittently. Further, the locking portion 23 of the above-described embodiment extends from the outer edge 222a of the first covering portion crimping piece 222A in the covering portion holding portion 22 to the outer edge 222b of the second covering portion crimping piece 222B. Not limited to configuration. The locking portion 23 may be arranged in a partial region (range) between the outer edge 222a of the first covering portion crimped piece 222A and the outer edge 222b of the second covering portion crimped piece 222B.

また、上記実施形態の係止部２３は、内側面２２Ａにおいて並び方向に対して直交する方向に延びているが、この構成に限定されない。係止部２３は、内側面２２Ａにおいて並び方向に対して交差する方向に延びていればよい。また、係止部２３は、平板状に広げたときの被覆部保持部２２（平板状保持部２Ａ）において、直線状に真っ直ぐ延びていなくてもよい。係止部２３は、例えば、湾曲、屈曲等していてもよい。 Moreover, although the latching|locking part 23 of the said embodiment is extended in the direction orthogonal to the row direction in 22 A of inner surfaces, it is not limited to this structure. The locking portion 23 may extend in a direction intersecting the alignment direction on the inner side surface 22A. Further, the engaging portion 23 does not have to extend linearly and straightly in the covering portion holding portion 22 (flat plate-like holding portion 2A) when spread into a flat plate shape. The locking portion 23 may be curved, bent, or the like, for example.

また、上記実施形態の係止部２３では、並び方向における凹部２３２の両側に凸部２３１（第一凸部２３１ａ、第二凸部２３１ｂ）が配置されているが、この構成に限定されない。係止部２３において、第一凸部２３１ａと第二凸部２３１ｂのうちの少なくとも一方が配置されていればよい。かかる構成によれば、凸部２３１の食い込みによる過度な応力集中によって絶縁部材７２が破れやすくなることを防ぎつつ、凸部２３１を絶縁部材７２に十分に食い込ませることができる。 In addition, in the locking portion 23 of the above embodiment, the projections 231 (the first projection 231a and the second projection 231b) are arranged on both sides of the recess 232 in the alignment direction, but the configuration is not limited to this. At least one of the first convex portion 231a and the second convex portion 231b may be arranged in the locking portion 23 . According to such a configuration, the insulating member 72 can be sufficiently bitten into the insulating member 72 while preventing the insulating member 72 from being easily broken due to excessive stress concentration due to the biting of the convex portion 231 .

係止部２３において凸部２３１が一つだけ設けられる場合、第一凸部２３１ａが配置されていれば、第一凸部２３１ａに押圧された絶縁部材７２の一部が芯線保持部２１側に逃げる。これにより、引張力が電線７に加わったときの絶縁部材７２の第一凸部２３１ａへの引っ掛かりがより大きくなる。その結果、係止部２３に凸部２３１として第二凸部２３１ｂだけが設けられる場合に比べ、引張強度がより向上する。 When only one convex portion 231 is provided in the locking portion 23, if the first convex portion 231a is arranged, a part of the insulating member 72 pressed by the first convex portion 231a is pushed toward the core wire holding portion 21 side. run away. As a result, the insulating member 72 is more likely to be caught by the first protrusion 231a when a tensile force is applied to the electric wire 7 . As a result, compared with the case where only the second projection 231b is provided as the projection 231 on the locking portion 23, the tensile strength is further improved.

被覆部保持部２２の具体的な構成は限定されない。例えば、被覆部保持部２２は、図１５に示すように、第二本体２２１から一つの被覆部カシメ片２２２が延びる構成でもよく、図１６Ａ及び図１６Ｂに示すように、筒状であってもよい。即ち、被覆部保持部２２は、被覆部７Ｂを保持したときに該被覆部７Ｂに押し付けられる内側面２２Ａと、該内側面２２Ａに配置された少なくとも一つの係止部２３と、を有していればよい。 A specific configuration of the covering portion holding portion 22 is not limited. For example, the covering portion holding portion 22 may have a configuration in which one covering portion crimping piece 222 extends from the second main body 221 as shown in FIG. 15, or may be cylindrical as shown in FIGS. good. That is, the covering portion holding portion 22 has an inner side surface 22A that is pressed against the covering portion 7B when the covering portion 7B is held, and at least one engaging portion 23 arranged on the inner side surface 22A. All you have to do is

また、上記実施形態の圧着端子１では、並び方向と、相手側端子ピンの挿抜方向とが同じであるが、この構成に限定されない。例えば図１７に示すように、圧着端子１Ａにおいて、並び方向と、相手側端子ピンの挿抜方向とが交差していてもよい。また、電線保持部２と接続部３との並ぶ方向も限定されない。 In addition, in the crimp terminal 1 of the above-described embodiment, the alignment direction and the insertion/removal direction of the mating terminal pin are the same, but the configuration is not limited to this. For example, as shown in FIG. 17, in the crimp terminal 1A, the alignment direction may intersect with the insertion/removal direction of the mating terminal pin. Also, the direction in which the wire holding portion 2 and the connecting portion 3 are arranged is not limited.

また、上記実施形態の圧着端子１に接続される電線７では、長手方向の端部に露出部７Ａが配置されているが、この構成に限定されない。例えば図１８Ａ及び図１８Ｂに示すように、電線７において、露出部７Ａが長手方向の途中位置に配置（即ち、被覆部７Ｂ間に露出部７Ａが配置）されていてもよい。 In the electric wire 7 connected to the crimp terminal 1 of the above embodiment, the exposed portion 7A is arranged at the end in the longitudinal direction, but the configuration is not limited to this. For example, as shown in FIGS. 18A and 18B, in the electric wire 7, the exposed portion 7A may be arranged in the middle of the longitudinal direction (that is, the exposed portion 7A may be arranged between the covering portions 7B).

上記実施形態の圧着端子１では、接続部３が相手側端子ピンを挿抜可能に構成されているが、この構成に限定されない。接続部３は、例えば、端子ピン（即ち、圧着端子１が雄型の端子）であってもよく、ビス等によって相手側端子に接続される構成（例えば図１８Ａの接続部３Ａ参照）等であってもよい。 In the crimp terminal 1 of the above-described embodiment, the connection portion 3 is configured so that the mating terminal pin can be inserted and removed, but the configuration is not limited to this. The connection portion 3 may be, for example, a terminal pin (that is, the crimp terminal 1 is a male terminal), and may be connected to the mating terminal by a screw or the like (see, for example, the connection portion 3A in FIG. 18A). There may be.

また、上記実施形態の圧着端子に接続される電線７では、芯線７１は、カーボン繊維であるが、この構成に限定されない。例えば、芯線７１は、金属フィラーを有した樹脂繊維、ポリエステル繊維やカーボン繊維等に金属メッキを施したメッキ繊維、ポリピロール類、ポリチオフェン類、ポリアセチレン類、ポリフェニレン類、ポリフェニレンビニレン類、ポリアニリン類、ポリアセン類、ポリチオフェンビニレン類、およびこれらのうちの二以上の共重合体からなる繊維等の導電性繊維であってもよい。 Moreover, in the electric wire 7 connected to the crimp terminal of the above-described embodiment, the core wire 71 is made of carbon fiber, but the configuration is not limited to this. For example, the core wire 71 may be a resin fiber having a metal filler, a plated fiber obtained by plating a polyester fiber, a carbon fiber, or the like with a metal, polypyrroles, polythiophenes, polyacetylenes, polyphenylenes, polyphenylenevinylenes, polyanilines, polyacenes. , polythiophene vinylenes, and conductive fibers such as fibers composed of copolymers of two or more of these.

また、上記実施形態の電線７の絶縁部材７２は、エラストマーであるが、この構成に限定されない。例えば、絶縁部材７２は、オレフィン系、塩化ビニル、フッ素系等であってもよい。即ち、絶縁部材７２は、芯線７１が導電性繊維の場合に、該芯線７１との密着強度が５Ｎ以下のものでもよい。ここで、密着強度とは、圧着端子１が固定された状態で該圧着端子１に接続されている電線７を並び方向（芯線保持部２１と被覆部保持部２２との並び方向）に１５０ｍｍ／ｍｉｎで引っ張り、絶縁部材７２が破れたときに電線７に加わっている力（引張力）を計測して得られた値（単位はＮ）である。 Moreover, although the insulating member 72 of the electric wire 7 of the above-described embodiment is made of elastomer, it is not limited to this configuration. For example, the insulating member 72 may be olefin-based, vinyl chloride, fluorine-based, or the like. That is, when the core wire 71 is a conductive fiber, the insulating member 72 may have a bonding strength of 5 N or less with the core wire 71 . Here, the adhesion strength means that the electric wire 7 connected to the crimp terminal 1 is 150 mm/150 mm in the direction in which the crimp terminal 1 is fixed (the direction in which the core wire holding portion 21 and the covering portion holding portion 22 are arranged). It is a value (unit: N) obtained by measuring the force (tensile force) applied to the electric wire 7 when the insulating member 72 is torn when the wire is pulled at min.

このような芯線７１と絶縁部材７２との密着強度が５Ｎ以下の電線７では、芯線７１に対する絶縁部材７２の長手方向の相対移動が生じ易い。これにより、電線７に引張力が加わったときに被覆部保持部２２において絶縁部材７２にのみ力が集中するため絶縁部材７２が破れ易い。しかし、上記実施形態の圧着端子１が用いられることで、被覆部保持部２２に保持される部位（被覆部７Ｂ）における芯線７１に対する絶縁部材７２の密着力が確保され、これにより、前記破れが効果的に防がれる。尚、密着強度とは、長さが２００ｍｍの電線７の両端５０ｍｍの被覆（絶縁部材７２）をそれぞれ剥ぎ（即ち、芯線７１を露出させ）、芯線７１の径より大きく且つ絶縁部材（電線７）の径より小さい穴の開いたダイスの当該穴に電線７の一方の端部で露出する芯線７１を挿通させ、穴から突出する芯線７１を引っ張ったときに該芯線７１が動いた時の引張力（芯線７１が動いているときの最大荷重）のことである。 In the electric wire 7 in which the adhesion strength between the core wire 71 and the insulating member 72 is 5 N or less, relative movement of the insulating member 72 with respect to the core wire 71 in the longitudinal direction is likely to occur. As a result, when a tensile force is applied to the electric wire 7 , the force is concentrated only on the insulating member 72 in the covering portion holding portion 22 , so that the insulating member 72 is easily broken. However, by using the crimp terminal 1 of the above-described embodiment, the adhesion of the insulating member 72 to the core wire 71 at the portion (covering portion 7B) held by the covering portion holding portion 22 is ensured, thereby preventing the breakage. effectively prevented. The adhesion strength is obtained by peeling off the coating (insulating member 72) of 50 mm at both ends of the electric wire 7 having a length of 200 mm (that is, exposing the core wire 71), The core wire 71 exposed at one end of the electric wire 7 is inserted into the hole of a die with a hole smaller than the diameter of , and when the core wire 71 protruding from the hole is pulled, the tensile force when the core wire 71 moves It means (the maximum load when the core wire 71 is moving).

このように、上記実施形態の圧着端子１では、芯線７１と絶縁部材７２との密着強度が５Ｎ以下の電線７に用いられることで、被覆部保持部２２における引張強度の向上（即ち、被覆部保持部２２において絶縁部材７２の破れを防ぐ）といった効果がより顕著に得られる。しかし、芯線７１と絶縁部材７２との密着強度が５Ｎより大きな電線７に用いられても、被覆部保持部２２に係止部２３が設けられていれば、被覆部保持部２２において引張強度は向上する。 As described above, in the crimp terminal 1 of the above-described embodiment, the adhesion strength between the core wire 71 and the insulating member 72 is used for the electric wire 7 having 5 N or less, so that the tensile strength of the covering portion holding portion 22 is improved (that is, the covering portion The effect of preventing breakage of the insulating member 72 in the holding portion 22 can be obtained more remarkably. However, even if the electric wire 7 is used for the electric wire 7 in which the adhesion strength between the core wire 71 and the insulating member 72 is greater than 5N, the tensile strength of the covering portion holding portion 22 is reduced if the locking portion 23 is provided in the covering portion holding portion 22. improves.

上記実施形態の加工刃６１の横断面形状は、中心線Ｃ２を中心にして線対称であるが、この構成に限定されない。加工刃６１の横断面形状は、中心線Ｃ２を中心にして非対称であってもよい。このような横断面形状が非対称の加工刃６１によって係止部２３を形成した場合、形成された係止部２３の二つの凸部２３１ａ、２３１ｂの大きさ（基準面２２０Ａからの高さ）は、異なる。The cross-sectional shape of the processing blade 61 of the above embodiment is symmetrical about the center line C2 , but is not limited to this configuration. The cross-sectional shape of the processing blade 61 may be asymmetric with respect to the centerline C2 . When the locking portion 23 is formed by the machining blade 61 having such an asymmetrical cross-sectional shape, the size of the two projections 231a and 231b of the formed locking portion 23 (the height from the reference surface 220A) is ,different.

また、上記実施形態の加工刃６１は、可動部材６の傾斜面６２に沿って真っ直ぐ延びているが、この構成に限定されない。加工刃６１は、湾曲するように延びていてもよい。また、加工刃６１は、丸刃等であってもよい。 Moreover, although the processing blade 61 of the above-described embodiment extends straight along the inclined surface 62 of the movable member 6, it is not limited to this configuration. The processing blade 61 may extend in a curved manner. Also, the processing blade 61 may be a round blade or the like.

また、加工刃６１の数は限定されない。上記実施形態の可動部材６は、三つの加工刃６１を有しているが、一つ～二つ、又は四つ以上の加工刃６１を有する構成でもよい。 Also, the number of processing blades 61 is not limited. Although the movable member 6 in the above embodiment has three processing blades 61, it may have one to two processing blades 61, or four or more processing blades 61. FIG.

また、上記実施形態の圧着端子１の製造方法では、係止部２３が形成される際に、端子相当部１ａの両端である電線保持部２側の端部と接続部３側の端部とがキャリアｍｃに接続されているが、この構成に限定されない。加工刃６１が内側面２２Ａに押し当てられた状態で可動部材６が移動する際に、端子相当部１ａの被覆部保持部２２が移動しない（ズレない）ように固定等されていれば、端子相当部１ａがキャリアｍｃ等に接続されずに単独で配置されていてもよい。 In addition, in the method for manufacturing the crimp terminal 1 of the above-described embodiment, when the engaging portion 23 is formed, the end portion on the side of the wire holding portion 2 and the end portion on the side of the connecting portion 3, which are both ends of the terminal-corresponding portion 1a, are separated from each other. is connected to carrier mc, but is not limited to this configuration. When the movable member 6 moves while the processing blade 61 is pressed against the inner surface 22A, if the covering portion holding portion 22 of the terminal-corresponding portion 1a is fixed so as not to move (displace), the terminal Corresponding portion 1a may be arranged alone without being connected to carrier mc or the like.

本発明を表現するために、上述において図面を参照しながら実施形態を通して本発明を適切且つ十分に説明したが、当業者であれば上述の実施形態を変更及び／又は改良することは容易に成し得ることであると認識すべきである。従って、当業者が実施する変更形態又は改良形態が、請求の範囲に記載された請求項の権利範囲を離脱するレベルのものでない限り、当該変更形態又は当該改良形態は、当該請求項の権利範囲に包括されると解釈される。 Although the present invention has been adequately and fully described above through the embodiments with reference to the drawings in order to express the present invention, modifications and/or improvements to the above-described embodiments can be easily made by those skilled in the art. It should be recognized that it is possible. Therefore, to the extent that modifications or improvements made by those skilled in the art do not depart from the scope of the claims set forth in the claims, the modifications or improvements are not within the scope of the claims. is interpreted to be subsumed by

１、１Ａ、１Ｂ…圧着端子、１ａ…端子相当部、２…電線保持部、２Ａ…平板状保持部、２１…芯線保持部、２１１…第一本体、２１２…導体カシメ片、２２…被覆部保持部、２２Ａ…内側面、２２Ｂ…外側面、２２ａ…一方の端面、２２ｂ…他方の端面、２２０Ａ…基準面、２２１…第二本体、２２２…被覆部カシメ片、２２２Ａ…第一被覆部カシメ片、２２２Ｂ…第二被覆部カシメ片、２２２ａ…第一被覆部カシメ片の外側端縁、２２２ｂ…第二被覆部カシメ片の外側端縁、２３…係止部、２３Ａ…凹凸部、３、３Ａ…接続部、２３１…凸部、２３１ａ…第一凸部、２３１ｂ…第二凸部、２３２…凹部、３１…筒部、３１１…筒部本体、３１２…ランス、３２…弾性接触片、３２Ａ…内側面、５…製造装置、５１…打ち抜き部、５２…係止部形成部、５２０…リンク機構、５３…曲げ等成形部、６…可動部材、６１…加工刃、６２…傾斜面、７…電線、７Ａ…露出部、７Ｂ…被覆部、７１…芯線、７２…絶縁部材、８００…端子、８１０…電気接続部、８２０…圧着接続部、８３０…導体圧着部、８３１…基底部、８３２…導体圧着片、８４０…外被圧着部、８４１…基底部、８４２…外被圧着片、９００…電線、９０１…芯線、９０２…絶縁被覆部分、Ｃ…中心軸、Ｃ１、Ｃ２…中心線、ｍ…導電性を有する帯状の部材（原材料）、ｍ１…第一加工部材、ｍ２…第二加工部材、ｍｃ…キャリア、Ｐ…プレス機、Ｒ…リール、Ｓ１…内側領域断面積、Ｓ２…凸部断面積、Ｓ２／Ｓ１…断面積比、Ｖ１、Ｖ２…仮想中心線、α…領域、β１、β２…絶縁部材と芯線との密着範囲DESCRIPTION OF SYMBOLS 1, 1A, 1B... Crimp terminal 1a... Terminal equivalent part 2... Electric wire holding part 2A... Flat plate-like holding part 21... Core wire holding part 211... First main body 212... Conductor caulking piece 22... Coating part Holding part 22A... Inner surface 22B... Outer surface 22a... One end surface 22b... The other end surface 220A... Reference surface 221... Second main body 222... Cover part crimping piece 222A... First cover part crimping piece, 222B... second covering part crimping piece, 222a... outer edge of first covering part crimping piece, 222b... outer edge of second covering part crimping piece, 23... locking part, 23A... concavo-convex part, 3, 3A... Connecting part 231... Protruding part 231a... First protruding part 231b... Second protruding part 232... Recessed part 31... Cylindrical part 311... Cylindrical part main body 312... Lance 32... Elastic contact piece 32A Inner surface 5 Manufacturing device 51 Punching part 52 Engagement part forming part 520 Link mechanism 53 Forming part such as bending 6 Movable member 61 Machining blade 62 Inclined surface 7 Electric wire 7A Exposed portion 7B Coating portion 71 Core wire 72 Insulating member 800 Terminal 810 Electrical connection portion 820 Crimp connection portion 830 Conductor crimp portion 831 Base portion 832 Conductor crimping piece 840 Envelope crimping portion 841 Base portion 842 Envelope crimping piece 900 Electric wire 901 Core wire 902 Insulation coating portion C Central axis C 1 , C 2 Center Wire, m... Strip-shaped member having conductivity (raw material), m1 ... First processed member, m2 ... Second processed member, mc... Carrier, P... Press machine, R... Reel, S1 ... Inner region section Area, S 2 : cross-sectional area of convex portion, S 2 /S 1 : ratio of cross-sectional area, V 1 , V 2 : imaginary center line, α: area, β 1 , β 2 : range of close contact between insulating member and core wire

Claims (3)

芯線と該芯線を被覆する絶縁部材とを有する電線において前記芯線が露出している露出部を保持可能な芯線保持部と、前記芯線保持部と隣り合う位置に配置され、且つ前記電線の前記露出部と隣接する位置において前記芯線が前記絶縁部材に被覆されている被覆部を該被覆部の周方向に囲むように保持可能な被覆部保持部と、を有する電線保持部を備える圧着端子の製造方法であって、
前記被覆部保持部が前記被覆部を保持したときに該被覆部に押し付けられる該被覆部保持部の対向面に、前記周方向に沿って延びる係止部であって、該対向面における当該係止部以外の領域に対して突出している凸部と、該凸部に隣接する位置において前記領域に対して凹んでいる凹部と、を有する係止部が形成される工程を備え、
該係止部が形成される工程では、前記係止部が形成される前の平らな状態の被覆部保持部の前記対向面に対して、該対向面に押し当てられた状態の加工刃を該被覆部保持部における前記周方向に対応する方向に沿って移動させることにより、前記凹部が形成されつつ、該被覆部保持部における前記凹部の形成される領域にあった部位が前記加工刃の移動に伴って該凹部と隣接する位置に押し退けられることで前記凸部も形成される、圧着端子の製造方法。 a core wire holding portion capable of holding an exposed portion of the exposed core wire in an electric wire having a core wire and an insulating member covering the core wire; Manufacture of a crimp terminal provided with a wire holding portion having a covering portion holding portion capable of holding a covering portion in which the core wire is covered with the insulating member at a position adjacent to the portion so as to surround the covering portion in a circumferential direction. a method,
a locking portion extending along the circumferential direction on a facing surface of the covering portion holding portion that is pressed against the covering portion when the covering portion holding portion holds the covering portion; A step of forming a locking portion having a protrusion projecting to a region other than the stop portion and a recess recessed from the region at a position adjacent to the protrusion,
In the step of forming the engaging portion, the processing blade in a state of being pressed against the facing surface of the covering portion holding portion in a flat state before the engaging portion is formed. By moving the covering portion holding portion along the direction corresponding to the circumferential direction, the concave portion is formed, and the portion of the covering portion holding portion that was in the area where the concave portion is formed is replaced with the working blade. A method of manufacturing a crimp terminal, wherein the convex portion is also formed by being pushed away to a position adjacent to the concave portion as it moves. 前記平らな状態の被覆部保持部は、前記周方向に対応する方向の端縁に外側を向いた端面を有し、
前記係止部が形成される工程では、前記加工刃を、前記端面又は該端面と前記対向面とによって構成される角部から当てて前記周方向に対応する方向に沿って移動させる、請求項１に記載の圧着端子の製造方法。 The covering portion holding portion in a flat state has an end surface facing outward on an edge in a direction corresponding to the circumferential direction,
3. In the step of forming the engaging portion, the processing blade is applied from the end surface or a corner formed by the end surface and the opposing surface and moved along a direction corresponding to the circumferential direction. 2. The method for manufacturing the crimp terminal according to 1 . 前記加工刃における少なくとも前記対向面に押し当てられる部位は、移動方向に対して上り勾配となるように延びている、請求項１又は２に記載の圧着端子の製造方法。 3. The method of manufacturing a crimp terminal according to claim 1 , wherein at least a portion of said working blade that is pressed against said facing surface extends upwardly with respect to the moving direction.
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JP2014160577A (en) 2013-02-20 2014-09-04 Furukawa Electric Co Ltd:The Crimp terminal and wire harness using crimp terminal

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JP2013538423A (en) 2010-08-23 2013-10-10 タイコ エレクトロニクス アンプ ゲゼルシャフト ミット ベシュレンクテル ハウツンク Electrical connection terminal, production method and production apparatus for electrical connection terminal
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