JP2017168297A

JP2017168297A - Crimped terminal and manufacturing method for crimped terminal

Info

Publication number: JP2017168297A
Application number: JP2016052414A
Authority: JP
Inventors: 素文加藤; Motofumi Kato
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2016-03-16
Filing date: 2016-03-16
Publication date: 2017-09-21
Anticipated expiration: 2036-03-16
Also published as: JP6650304B2

Abstract

PROBLEM TO BE SOLVED: To provide a crimped terminal that enables the leading-end edge of a caulking flap part (core-wire crimped flap) to properly bite into a core wire (between element wires) while hindering occurrence of streak of fine plate.SOLUTION: A crimped terminal 100 is molded from a plate material 1 comprising a base material 2 and a plated layer 3, and has a core-wire caulked part 20 holding a core wire 92 of an electric wire 90 comprising the core wire 92 formed from a plurality of element wires 91. The core-wire caulking part 20 comprises: a base bottom part 21; and caulked flap parts 22 extended from both side edges of the base bottom part 21. Along a leading-end edge 23 on the caulking-flap external surface 22b of the caulking flap part 22, a stepped thin wall range 24 is formed, which decreases stepwise in plate thickness toward the leading end edge 23. The thin wall range 24 is composed of a portion 24p parallel to a caulking-flap internal surface 22a, and a portion 24v perpendicular to the caulking-flap internal surface 22a.SELECTED DRAWING: Figure 3

Description

本発明は圧着端子および圧着端子の製造方法に関する。 The present invention relates to a crimp terminal and a method for manufacturing a crimp terminal.

従来、圧着端子は、金属板をプレス加工（打ち抜き加工および曲げ加工）したものであって、他の端子に接触する接触部と、被覆電線を構成する芯線を保持する芯線加締め部（ワイヤバレル部に同じ）と、被覆電線を構成する被覆を保持する被覆加締め部（インシュレーションバレル部に同じ）とを有している。
芯線加締め部は、略半円筒状の芯線受け部（基底部に同じ）と芯線受け部の両側縁に繋がった略平面状の芯線圧着片（加締め片部に同じ）とを具備する断面略Ｕ字状に成形されている。そして、芯線受け部に芯線を載置した状態で、芯線を包み込むように芯線圧着片を曲げ、芯線圧着片の先端縁を芯線（正確には、芯線を構成する素線の間）に食い込ませることによって、芯線圧着片と芯線、および素線同士を圧着する（凝着させる）ものである。
このとき、芯線の外径に比較して芯線圧着片の厚さが相対的に大きい場合には、芯線圧着片の先端縁が芯線（素線の間）に適切に食い込み難くなることから、芯線圧着片と芯線との接触抵抗が高くなったり、芯線を保持する力が低くなったりする不都合が生じる。このため、これを解消する目的で、芯線圧着片の先端縁に面取り部（所謂「Ｃ面取り」に同じ）を形成した発明が開示されている（例えば、特許文献１参照）。 Conventionally, a crimp terminal is obtained by pressing (punching and bending) a metal plate, and a contact portion that comes into contact with another terminal and a core wire crimping portion (wire barrel) that holds a core wire constituting a covered electric wire. The same), and a covering crimped portion (same as the insulation barrel portion) that holds the covering constituting the covered electric wire.
The core wire crimping portion has a substantially semi-cylindrical core wire receiving portion (same as the base portion) and a substantially flat core wire crimping piece (same as the crimping piece portion) connected to both side edges of the core wire receiving portion. It is formed in a substantially U shape. Then, with the core wire placed on the core wire receiving portion, the core wire crimping piece is bent so as to wrap the core wire, and the leading edge of the core wire crimping piece is bitten into the core wire (exactly between the strands constituting the core wire). Thus, the core wire crimping piece, the core wire, and the strands are crimped (adhered).
At this time, when the thickness of the core wire crimping piece is relatively large compared to the outer diameter of the core wire, it is difficult for the leading edge of the core wire crimping piece to properly bite into the core wire (between the strands). There arises an inconvenience that the contact resistance between the crimping piece and the core wire is increased and the force for holding the core wire is decreased. For this reason, in order to solve this problem, an invention in which a chamfered portion (same as the so-called “C chamfer”) is formed at the tip edge of the core wire crimping piece is disclosed (for example, see Patent Document 1).

特開２０１１−４４４２３号公報（第７−８頁、図４）JP 2011-44423 A (page 7-8, FIG. 4)

しかしながら、特許文献１に開示された発明（圧着端子金具）は、銅合金等の金属材料板を打ち抜き加工した後、芯線圧着片の先端縁に近い範囲をテーパ状の金型面を具備する押圧金型によって押圧加工するものであるが、メッキ等の表面処理層が形成された金属材料板を用いたのでは、以下のような問題がある。
すなわち、メッキ層の塑性変形能と金属材料板自体（以下「母材」と称す）の塑性変形能とが相違するため、押圧加工において、メッキ層と母材とは同一の変形挙動を呈しない。すなわち、面取り部におけるメッキ層は、母材とは相違したせん断変形をすることになるため、メッキ層の表層（金型に当接する面）は、面取り部の先端縁（芯線圧着片の厚さが最も薄くなる縁）に向かって移動し、略針状の「微細メッキ条」を形成するという問題がある。 However, in the invention (crimp terminal fitting) disclosed in Patent Document 1, after punching a metal material plate such as a copper alloy, a press having a tapered die surface in a range close to the tip edge of the core wire crimping piece. Although pressing is performed by a mold, the use of a metal material plate on which a surface treatment layer such as plating is formed has the following problems.
That is, since the plastic deformability of the plated layer is different from the plastic deformability of the metal material plate itself (hereinafter referred to as “base material”), the plated layer and the base material do not exhibit the same deformation behavior in pressing. . That is, the plated layer in the chamfered portion undergoes shear deformation different from that of the base material, and therefore, the surface layer of the plated layer (the surface in contact with the mold) is the tip edge of the chamfered portion (the thickness of the core wire crimping piece). Is moving toward the thinnest edge) to form a substantially needle-like “fine plating strip”.

すなわち、微細メッキ条は、面取り部の先端縁の端面に手繰り寄せられたように付着するものであるため、外力が作用した際、当該端面から離脱するおそれがある。
そうすると、微細メッキ条が離脱した場合、離脱した微細メッキ条が当該圧着端子に接続される他の端子との接続部に侵入して、電気的通電性能に悪影響（高い電気抵抗等）が生じる可能性がある。また、複数の当該圧着端子を収納したコネクタにおいては、離脱した微細メッキ条が隣接する当該圧着端子との間に侵入して、隣接する当該圧着端子との間で短絡（ショート）が生じたりする可能性がある。 That is, since the fine plating strip adheres to the end surface of the tip edge of the chamfered portion as if it is hand-drawn, there is a possibility that the fine plating strip may be detached from the end surface when an external force is applied.
Then, when the fine plating strip is detached, the detached fine plating strip may enter a connection portion with another terminal connected to the crimp terminal, and adversely affect the electrical current-carrying performance (such as high electrical resistance). There is sex. Moreover, in the connector which accommodated the said several crimp terminal, the detached fine plating strip | penetration penetrate | invades between the said corresponding crimp terminals, and a short circuit (short) arises between the adjacent said crimp terminals. there is a possibility.

本発明は、このような状況に鑑みてなされたものであり、微細メッキ条の発生を抑えながら、芯線圧着片（加締め片部）の先端縁を芯線（素線の間）に適切に食い込ませることができる圧着端子、およびかかる圧着端子の製造方法を提供することにある。 This invention is made | formed in view of such a condition, and bites the front-end edge of a core wire crimping piece (caulking piece part) into a core wire (between strands), suppressing generation | occurrence | production of a fine plating strip. Another object of the present invention is to provide a crimp terminal that can be applied, and a method of manufacturing such a crimp terminal.

本発明に係る圧着端子は、母材およびメッキ層を具備する板材によって成形され、複数の素線からなる芯線を具備する電線の前記芯線を保持する芯線加締め部を有し、
前記芯線加締め部は、基底部と、前記基底部の両側縁にそれぞれ延設された加締め片部とを具備し、
前記加締め片部の先端縁に沿って、前記先端縁に近くなる程、板厚が段階的に減少する階段状の薄肉範囲が形成されていることを特徴とする。
また、本発明に係る圧着端子の製造方法は、複数の素線からなる芯線を具備する電線の前記芯線を保持する芯線加締め部を有する圧着端子の製造方法であって、
前記芯線加締め部は、基底部と前記基底部の両側縁にそれぞれ延設された加締め片部とを具備し、
前記加締め片部の先端縁から所定の範囲に、前記先端縁に近くなる程、板厚が段階的に減少する階段状の薄肉範囲または板厚が徐々に減少するテーパ状の薄肉範囲が成形され、
母材およびメッキ層を具備する板材を押圧加工して、前記加締め片部の先端縁から所定の範囲に相当する範囲に前記薄肉範囲を具備する押圧材を成形する第１工程と、
前記押圧材を打ち抜き加工して、前記芯線加締め部の外郭形状を具備する打ち抜き材を成形する第２工程とを有することを特徴とする。 The crimp terminal according to the present invention is formed by a plate material including a base material and a plating layer, and has a core wire crimping portion that holds the core wire of the electric wire including a core wire composed of a plurality of strands,
The core wire caulking part includes a base part and caulking piece parts respectively extending on both side edges of the base part,
A step-like thin range in which the plate thickness decreases stepwise as the tip edge is closer to the tip edge is formed along the tip edge of the crimping piece portion.
Moreover, the manufacturing method of the crimp terminal according to the present invention is a method of manufacturing a crimp terminal having a core wire crimping portion for holding the core wire of an electric wire having a core wire composed of a plurality of strands,
The core wire caulking part includes a base part and caulking piece parts respectively extending on both side edges of the base part,
A stepped thin range in which the plate thickness gradually decreases as the closer to the tip edge, the taper-shaped thin range in which the plate thickness gradually decreases is formed within a predetermined range from the tip edge of the crimping piece portion. And
A first step of pressing a plate material having a base material and a plating layer, and forming a pressing material having the thin-walled range in a range corresponding to a predetermined range from a tip edge of the crimping piece portion;
A second step of stamping the pressing material to form a punching material having an outer shape of the core caulking portion.

本発明に係る圧着端子は、以上の構成であって、加締め片部の先端縁に沿って板厚が段階的に減少する階段状の薄肉範囲が形成されているから、微細メッキ条の発生を抑えることが可能になると共に、加締め片部の先端縁を芯線（素線の間）に適切に食い込ませることができる。
また、本発明に係る圧着端子の製造方法は、以上の構成であって、板材を押圧加工して薄肉範囲を具備する押圧材を成形した後、押圧材を打ち抜き加工するから、仮に、押圧加工によって微細メッキ条が発生したとしても、微細メッキ条が圧着端子に取り込まれないように打ち抜き加工することができる。したがって、微細メッキ条のない圧着端子を得ることができると共に、加締め片部の先端縁を芯線（素線の間）に適切に食い込ませることができる。 The crimp terminal according to the present invention has the above-described configuration, and since a step-like thin range in which the plate thickness decreases stepwise along the tip edge of the crimping piece portion is formed, generation of a fine plating strip Can be suppressed, and the tip edge of the caulking piece can be appropriately bited into the core wire (between the strands).
Moreover, the manufacturing method of the crimp terminal according to the present invention has the above-described configuration, and after pressing the plate material to form a pressing material having a thin range, the pressing material is punched out. Even if a fine plating strip is generated by this, punching can be performed so that the fine plating strip is not taken into the crimp terminal. Therefore, a crimp terminal without a fine plating strip can be obtained, and the tip edge of the crimping piece can be appropriately bited into the core wire (between the strands).

本発明の実施の形態１に係る圧着端子を説明する全体を示す斜視図である。It is a perspective view which shows the whole explaining the crimp terminal which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る圧着端子を説明するものであって、保持する電線を示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the crimp terminal which concerns on Embodiment 1 of this invention, Comprising: The electric wire to hold | maintain. 本発明の実施の形態１に係る圧着端子を説明するものであって、一部（芯線加締め部）を拡大して示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view for explaining a crimp terminal according to Embodiment 1 of the present invention and enlarging a part (core wire crimping portion). 本発明の実施の形態１に係る圧着端子を説明するものであって、一部の部分（芯線加締め部の加締め片部）を切り出して拡大して示す斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates a crimp terminal according to a first embodiment of the present invention, and is a perspective view illustrating a part of a portion (a caulking piece portion of a core wire caulking portion) that is cut out and enlarged. 本発明の実施の形態１に係る圧着端子の作用効果を説明するものであって、（ａ）は製造工程の一部を模式的に示す断面図、（ｂ）は製造工程の一部を拡大して模式的に示す断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It demonstrates the effect of the crimp terminal which concerns on Embodiment 1 of this invention, Comprising: (a) is sectional drawing which shows a part of manufacturing process typically, (b) is expanded a part of manufacturing process. It is sectional drawing shown typically. 本発明の実施の形態１に係る圧着端子の作用効果を説明するものであって、（ａ）は比較材における製造工程の一部を模式的に示す断面図、（ｂ）は比較材における製造工程の一部を拡大して模式的に示す断面図である。BRIEF DESCRIPTION OF THE DRAWINGS It demonstrates the effect of the crimp terminal which concerns on Embodiment 1 of this invention, Comprising: (a) is sectional drawing which shows a part of manufacturing process in a comparison material typically, (b) is the manufacture in a comparison material. It is sectional drawing which expands and shows a part of process typically. 本発明の実施の形態１に係る圧着端子の変形例を説明するものであって、一部を拡大して示す断面図である。FIG. 9 is a cross-sectional view illustrating a modification of the crimp terminal according to Embodiment 1 of the present invention and showing a part thereof enlarged. 本発明の実施の形態１に係る圧着端子の使用状況を説明するものであって、（ａ）は側面視の断面図、（ｂ）は正面視の断面図である。BRIEF DESCRIPTION OF THE DRAWINGS The usage condition of the crimp terminal which concerns on Embodiment 1 of this invention is demonstrated, Comprising: (a) is sectional drawing of a side view, (b) is sectional drawing of a front view. 本発明の実施の形態２に係る圧着端子の製造方法を説明するものであって、製造工程の一部を模式的に示す断面図である。It is sectional drawing which demonstrates the manufacturing method of the crimp terminal which concerns on Embodiment 2 of this invention, and shows a part of manufacturing process typically. 本発明の実施の形態２に係る圧着端子の製造方法を説明するものであって、比較材における製造工程の一部を模式的に示す断面図である。It is sectional drawing which demonstrates the manufacturing method of the crimp terminal which concerns on Embodiment 2 of this invention, Comprising: A part of manufacturing process in a comparison material is shown typically.

以下、発明を実施するための形態（以下、「実施の形態」という）を、図面を参照しつつ説明する。なお、各図は模式的に描かれたものであって、本発明は図示された形態（部位の形状や個数等）に限定されるものではない。また、図面が煩雑にならないようにするため、一部の部材または一部の符号の記載を省略する場合がある。 Hereinafter, modes for carrying out the invention (hereinafter referred to as “embodiments”) will be described with reference to the drawings. Each drawing is schematically drawn, and the present invention is not limited to the illustrated form (the shape and number of parts). Moreover, in order not to make a drawing complicated, description of a one part member or one part code | symbol may be abbreviate | omitted.

［実施の形態１］
図１〜図４は本発明の実施の形態１に係る圧着端子を説明するものであって、図１は全体を示す斜視図、図２は保持する電線を示す斜視図、図３は一部（芯線加締め部）を拡大して示す斜視図、図４は一部の部分（芯線加締め部の加締め片部）を切り出して拡大して示す斜視図である。なお、図３において、切断した面に斜線を付している。 [Embodiment 1]
1 to 4 illustrate a crimp terminal according to Embodiment 1 of the present invention. FIG. 1 is a perspective view showing the whole, FIG. 2 is a perspective view showing a wire to be held, and FIG. FIG. 4 is a perspective view showing an enlarged (core wire crimping portion), and FIG. 4 is a perspective view showing an enlarged portion of a portion (a caulking piece portion of the core wire crimping portion). In FIG. 3, the cut surface is hatched.

（圧着端子）
図１において、圧着端子１００は、板材１（図５参照）を成形したものであって、他の端子との接続のための接触部１０と、電線９０を構成する芯線９２（図２参照）を保持する芯線加締め部２０と、電線９０を構成する被覆９３（図２参照）を保持する被覆加締め部３０とを有している。
また、板材１は、銅（Ｃｕ）または銅合金製の母材２の表面にメッキされた錫（Ｓｎ）のメッキ層３を具備する（図５参照）。なお、メッキ層３は、母材２の表面に直接形成されても、あるいは、母材２にメッキされたニッケル（Ｎｉ）下地に形成されてもよい。また、母材２の材質およびメッキ層３の材質は前記に限定されるものではない。 (Crimp terminal)
In FIG. 1, a crimp terminal 100 is obtained by molding a plate material 1 (see FIG. 5), and is a contact portion 10 for connection with another terminal and a core wire 92 constituting an electric wire 90 (see FIG. 2). The core wire caulking portion 20 that holds the wire and the sheath caulking portion 30 that holds the sheath 93 (see FIG. 2) constituting the electric wire 90 are provided.
Moreover, the board | plate material 1 comprises the plating layer 3 of the tin (Sn) plated on the surface of the base material 2 made of copper (Cu) or a copper alloy (see FIG. 5). The plated layer 3 may be formed directly on the surface of the base material 2 or may be formed on a nickel (Ni) base plated on the base material 2. Further, the material of the base material 2 and the material of the plating layer 3 are not limited to the above.

（電線）
図２において、圧着端子１００が保持する電線９０は、複数の素線９１が撚られて形成された芯線９２と、芯線９２を被覆する被覆９３とを具備している。素線９１はアルミニウム（Ａｌ）またはアルミニウム合金製であるが、本発明はその材質を限定するものではない。また、被覆９３の材質も限定するものではない。 (Electrical wire)
In FIG. 2, the electric wire 90 held by the crimp terminal 100 includes a core wire 92 formed by twisting a plurality of strands 91 and a covering 93 that covers the core wire 92. The strand 91 is made of aluminum (Al) or an aluminum alloy, but the present invention does not limit the material thereof. Further, the material of the covering 93 is not limited.

（接触部）
図１において、接触部１０は箱状に成形され、内部に他の端子との接触に供されるバネ接点１１が設けられ、外部には、圧着端子１００がコネクタハウジング（図８参照）に挿入された際、位置決めとなるスタビライザー１２や抜け止めとなる係止突起１３が設けられている。なお、圧着端子１００は「雌端子」であるため、接触部１０は箱状であるが、本発明はこれに限定されるものではなく、「雄端子」であってもよい。雄端子の場合には、接触部１０は棒状（タブ）に成形される。 (Contact part)
In FIG. 1, a contact portion 10 is formed in a box shape, provided with a spring contact 11 provided for contact with other terminals, and a crimp terminal 100 is inserted into a connector housing (see FIG. 8) on the outside. When this is done, a stabilizer 12 for positioning and a locking projection 13 for retaining are provided. Since the crimp terminal 100 is a “female terminal”, the contact portion 10 has a box shape. However, the present invention is not limited to this and may be a “male terminal”. In the case of a male terminal, the contact portion 10 is formed in a rod shape (tab).

（芯線加締め部）
図１および図３において、芯線加締め部２０は、電線９０を構成する芯線９２を保持する前は、断面略Ｕ字状であって、略半円筒状の基底部２１と、基底部２１の両側縁のそれぞれ延設された加締め片部２２とを具備している。そして、加締め片部２２の先端縁２３に沿って、先端縁２３になる程、板厚が段階的に減少する階段状の薄肉範囲２４が形成されている。
なお、基底部２１と加締め片部２２との境界（基底部２１の両側縁の位置に同じ）は明瞭に特定されるものではない。また、薄肉範囲２４は、加締め片部２２の互いに対向する面（以下「加締め片部内面」と称す）２２ａの反対の面（以下「加締め片部外面」と称す）２２ｂに形成されているが、加締め片部内面２２ａに形成されてもよい。
さらに、基底部２１の小径側の面（以下「基底部内面」と称す）２１ａと、加締め片部内面２２ａとには、陥没したセレーション２５が形成されている。なお、セレーション２５は図示された形態に限定されるものではない。 (Core wire crimping part)
In FIG. 1 and FIG. 3, the core caulking portion 20 is substantially U-shaped in cross section before holding the core wire 92 constituting the electric wire 90, and has a substantially semi-cylindrical base portion 21 and a base portion 21. And caulking pieces 22 respectively extending on both side edges. A step-like thin range 24 is formed along the tip edge 23 of the caulking piece 22 so that the thickness of the plate decreases stepwise as the tip edge 23 is reached.
In addition, the boundary (the same as the position of the both-sides edge of the base part 21) of the base part 21 and the crimping piece part 22 is not specified clearly. The thin-walled area 24 is formed on a surface (hereinafter referred to as a “crimping piece outer surface”) 22b opposite to a mutually opposing surface (hereinafter referred to as a “crimping piece inner surface”) 22a of the crimping piece portion 22. However, it may be formed on the crimping piece inner surface 22a.
Further, a recessed serration 25 is formed on the small diameter side surface (hereinafter referred to as “base portion inner surface”) 21a of the base portion 21 and the crimping piece inner surface 22a. The serration 25 is not limited to the illustrated form.

（薄肉範囲）
図３および図４において、薄肉範囲２４は先端縁２３に沿って、先端縁２３に対して垂直な方向（基底部２１に向かう方向に同じ）に距離（以下「薄肉幅」と称す）Ｌの範囲に形成された階段状である。
そして、加締め片部内面２２ａに平行な方向を「平行方向」と、加締め片部内面２２ａに垂直な方向を「垂直方向」とそれぞれ称すと、薄肉範囲２４は平行方向の複数の平行部分２４ｐと、垂直方向の複数の垂直部分２４ｖとから構成されている。このとき、平行部分２４ｐの平行方向の距離（隣接する垂直部分２４ｖ同士の間隔に同じ。以下「平行部分幅」と称す）は「ΔＬ」である。
また、薄肉範囲２４を除く範囲における加締め片部２２の厚さと先端縁２３における厚さとの差（以下「薄肉量」と称す）は「Ｈ」で、垂直部分２４ｖの高さ（隣接する平行部分２４ｐ同士の垂直方向の距離に同じ。以下「垂直段差」と称す）は「ΔＨ」になっている。
なお、以上は、平行部分２４ｐ毎の平行部分幅ΔＬが同じで、垂直部分２４ｖ毎の垂直段差ΔＨが同じになっているが、本発明はこれに限定されるものではなく、平行部分２４ｐ毎に平行部分幅ΔＬが相違し、垂直部分２４ｖ毎に垂直段差ΔＨが相違してもよい。また、薄肉幅Ｌ、薄肉量Ｈおよび階段の数（平行部分２４ｐおよび垂直部分２４ｖの数）も限定されるものではない。 (Thin range)
3 and 4, the thin range 24 is a distance L (hereinafter referred to as “thin width”) L in a direction perpendicular to the tip edge 23 (same as the direction toward the base portion 21) along the tip edge 23. It is a step shape formed in the range.
When the direction parallel to the crimping piece inner surface 22a is referred to as "parallel direction" and the direction perpendicular to the crimping piece inner surface 22a is referred to as "vertical direction", the thin-walled area 24 is a plurality of parallel parts in the parallel direction. 24p and a plurality of vertical portions 24v in the vertical direction. At this time, the distance in the parallel direction of the parallel portion 24p (same as the interval between adjacent vertical portions 24v, hereinafter referred to as “parallel portion width”) is “ΔL”.
Further, the difference between the thickness of the crimping piece portion 22 and the thickness of the tip edge 23 in the range excluding the thin range 24 (hereinafter referred to as “thin amount”) is “H”, and the height of the vertical portion 24v (adjacent parallel). It is the same as the distance in the vertical direction between the portions 24p (hereinafter referred to as “vertical step”) is “ΔH”.
In the above description, the parallel part width ΔL for each parallel part 24p is the same, and the vertical step ΔH for each vertical part 24v is the same. However, the present invention is not limited to this, and for each parallel part 24p. The parallel portion width ΔL may be different, and the vertical step ΔH may be different for each vertical portion 24v. Further, the thin width L, the thin amount H, and the number of steps (the number of the parallel portions 24p and the vertical portions 24v) are not limited.

（被覆加締め部）
図１において、被覆加締め部３０は、電線９０を構成する被覆９３を保持する前は、断面略Ｕ字状であって、略半円筒状の被覆基底部３１と、被覆基底部３１の両側縁のそれぞれ延設された被覆加締め片部３２とを具備している。そして、被覆加締め片部３２の先端縁３３に向かって傾斜するテーパ状の面取り部３４が形成されている。 (Coating caulking part)
In FIG. 1, the covering caulking portion 30 is substantially U-shaped in cross section before holding the covering 93 constituting the electric wire 90, and has a substantially semi-cylindrical covering base portion 31 and both sides of the covering base portion 31. And a covering caulking piece portion 32 extending at each of the edges. A tapered chamfered portion 34 that is inclined toward the leading edge 33 of the covering crimping piece portion 32 is formed.

（作用効果）
図５および図６は本発明の実施の形態１に係る圧着端子の作用効果を説明するものであって、図５の（ａ）は製造工程の一部を模式的に示す断面図、図５の（ｂ）は製造工程の一部を拡大して模式的に示す断面図、図６の（ａ）は比較材における製造工程の一部を模式的に示す断面図、図６の（ｂ）は比較材における製造工程の一部を拡大して模式的に示す断面図である。 (Function and effect)
FIGS. 5 and 6 illustrate the operation and effect of the crimp terminal according to Embodiment 1 of the present invention. FIG. 5A is a cross-sectional view schematically showing a part of the manufacturing process. (B) is a cross-sectional view schematically showing an enlarged part of the manufacturing process, FIG. 6 (a) is a cross-sectional view schematically showing a part of the manufacturing process in the comparative material, and FIG. 6 (b). FIG. 4 is a cross-sectional view schematically showing an enlarged part of a manufacturing process in a comparative material.

図５の（ａ）において、圧着端子１００の芯線加締め部２０は、打ち抜き金型８１によって平面状の板材１を打ち抜き加工して、芯線加締め部２０の外郭形状（加締め片部２２の先端縁２３）を具備する打ち抜き材１０１を成形した後、打ち抜き材１０１に対して押圧加工して、薄肉範囲２４が成形された押圧材１０２を成形したものである。
このとき、薄肉範囲２４を成形する押圧金型（プレス駒に同じ）８２は、薄肉範囲２４に対応した階段状の面を具備している。なお、押圧材１０２はその後に実行される曲げ加工によって、接触部１０、芯線加締め部２０および被覆加締め部３０が成形され、圧着端子１００が完成する。 In FIG. 5A, the core wire crimping portion 20 of the crimp terminal 100 is formed by punching the planar plate material 1 with a punching die 81 to form the outer shape of the core wire crimping portion 20 (the crimping piece portion 22 of the crimping piece portion 22). After the punching material 101 having the leading edge 23) is formed, the punching material 101 is pressed and the pressing material 102 in which the thin range 24 is formed is formed.
At this time, the pressing die (same as the press piece) 82 for forming the thin area 24 has a stepped surface corresponding to the thin area 24. The pressing member 102 is formed into the contact portion 10, the core wire crimping portion 20, and the covering crimping portion 30 by a subsequent bending process, and the crimp terminal 100 is completed.

図５の（ｂ）において、段階状の薄肉範囲２４が成形される際、母材２は先端縁２３に近い程圧縮量は大きくなるから、垂直方向で圧縮されると共に平行方向に伸ばされ、巨視的に剪断変形している。一方、メッキ層３（梨地にして示している）は平行部分２４ｐ毎に主に圧縮変形され、各垂直部分２４ｖにおいて主に剪断変形される。
そうすると、各平行部分２４ｐは、上面（押圧金型８２に接する面）と下面（母材２との界面）とは平行のまま圧縮され、圧縮変形によるメッキ層３の平行方向への移動は僅かである（正確には、圧縮に伴って、平行部分２４ｐの平行方向の距離は徐々に僅かに増加する）。このため、メッキ層３の表層部が先端縁２３に向けて移動することによって発生する先端縁２３に手繰り寄せられたように集積した後記「微細メッキ条４（図６の（ｂ）参照）」が発生することがない。 In FIG. 5B, when the stepped thin area 24 is formed, the closer the base material 2 is to the tip edge 23, the larger the amount of compression, so that the base material 2 is compressed in the vertical direction and extended in the parallel direction. It is sheared macroscopically. On the other hand, the plating layer 3 (shown as matte) is mainly compressed and deformed for each parallel portion 24p, and is mainly sheared and deformed at each vertical portion 24v.
Then, each parallel portion 24p is compressed while the upper surface (the surface in contact with the pressing die 82) and the lower surface (interface with the base material 2) are parallel, and the movement of the plating layer 3 in the parallel direction due to the compressive deformation is slight. (To be precise, the distance in the parallel direction of the parallel portion 24p gradually increases slightly with compression). For this reason, the postscript “Fine plating strip 4 (see FIG. 6B)” is accumulated as if the surface layer portion of the plating layer 3 is moved toward the leading edge 23 generated by moving toward the leading edge 23. Will not occur.

（比較材）
図６の（ａ）において、特許文献１に開示された比較材９００は、平面状の板材１を打ち抜き加工して、芯線加締め部２０の外郭形状（加締め片部２２の先端縁２３）を具備する打ち抜き材１０１を成形した後、打ち抜き材１０１を押圧加工して、先端縁２３にテーパ状の傾斜薄肉範囲９２４が成形された比較押圧材９０２を成形したものである。
このとき、傾斜薄肉範囲９２４を成形する比較押圧金型（プレス駒に同じ）９８２は、テーパ状の傾斜薄肉範囲９２４に対応したテーパ状の傾斜面を具備している。なお、比較押圧材９０２はその後に実行される曲げ加工によって、接触部、芯線加締め部および被覆加締め部が成形され、比較材９００が完成する（何れも図示しない）。 (Comparison material)
In FIG. 6A, the comparative material 900 disclosed in Patent Document 1 is obtained by punching the flat plate material 1 to form the outer shape of the core wire crimping portion 20 (the leading edge 23 of the crimping piece portion 22). After the punching material 101 having the above is formed, the punching material 101 is pressed to form a comparative pressing material 902 in which a tapered inclined thin wall region 924 is formed on the tip edge 23.
At this time, the comparative pressing mold (same as the press piece) 982 for forming the inclined thin wall range 924 has a tapered inclined surface corresponding to the tapered inclined thin wall range 924. In addition, the comparison pressing material 902 is formed into a contact portion, a core wire crimping portion, and a covering crimping portion by a bending process performed thereafter, and the comparison material 900 is completed (all not shown).

図６の（ｂ）において、傾斜薄肉範囲９２４が成形される際、母材２は先端縁２３に近い程圧縮量は大きくなるから、垂直方向で圧縮されると共に平行方向に伸ばされ、巨視的に剪断変形している。
一方、メッキ層３（梨地にして示している）は傾斜薄肉範囲９２４に沿って伸ばされ、剪断変形される。このとき、メッキ層３の表層部が先端縁２３に向けて移動することから、移動したメッキ層３の一部は、先端縁２３の端面に手繰り寄せられたように集積して「微細メッキ条４」になる。 In FIG. 6B, when the inclined thin wall region 924 is formed, the amount of compression of the base material 2 increases as the distance from the tip edge 23 increases. Therefore, the base material 2 is compressed in the vertical direction and stretched in the parallel direction. Shear deformation.
On the other hand, the plating layer 3 (shown as matte) is stretched along the inclined thin wall region 924 and sheared. At this time, since the surface layer portion of the plating layer 3 moves toward the tip edge 23, a part of the moved plating layer 3 accumulates as if it is brought close to the end surface of the tip edge 23, and the “fine plating condition” 4 ".

（変形例）
図７は本発明の実施の形態１に係る圧着端子の変形例を説明するものであって、一部を拡大して示す断面図である。
図７において、薄肉範囲２４は前記のような階段状に代えて、波状に変更されている。
すなわち、加締め片部外面２２ｂに、先端縁２３に沿って、先端縁２３に平行で互いに滑らかに繋がった複数の突条２４ｈおよび複数の凹溝２４ｇが形成されている。
このとき、薄肉範囲２４の先端縁２３からの距離は薄肉幅Ｌであって、薄肉範囲２４を除く位置の加締め片部２２の厚さと、薄肉範囲２４の先端縁２３における厚さとの差は「薄肉量Ｈ」である。また、突条２４ｈの頂点と加締め片部内面２２ａとの距離Ｔｈが、先端縁２３に近い突条２４ｈになる程減少し、凹溝２４ｇの底と加締め片部内面２２ａとの距離Ｔｇが、先端縁２３に近い凹溝２４ｇになる程減少している。 (Modification)
FIG. 7 is a cross-sectional view illustrating a modification of the crimp terminal according to Embodiment 1 of the present invention, with a part thereof enlarged.
In FIG. 7, the thin area 24 is changed into a wave shape instead of the stepped shape as described above.
In other words, a plurality of protrusions 24 h and a plurality of concave grooves 24 g are formed on the caulking piece outer surface 22 b along the tip edge 23 in parallel with the tip edge 23 and smoothly connected to each other.
At this time, the distance from the leading edge 23 of the thin area 24 is the thin width L, and the difference between the thickness of the crimping piece 22 at a position excluding the thin area 24 and the thickness at the leading edge 23 of the thin area 24 is “Thin amount H”. Further, the distance Th between the apex of the protrusion 24h and the crimping piece inner surface 22a decreases as the protrusion 24h is closer to the tip edge 23, and the distance Tg between the bottom of the groove 24g and the crimping piece inner surface 22a. However, it becomes so small that it becomes the concave groove 24g near the front-end edge 23. FIG.

そして、波の波長に相当する距離、すなわち、隣接する突条２４ｈの頂点同士の平行方向の距離および隣接する凹溝２４ｇの底同士の平行方向の距離は、「平行部分幅ΔＬ」になっている。
また、波の波高に相当する距離、すなわち、隣接する突条２４ｈの頂点同士の垂直方向の距離は「垂直段差ΔＨ」で、隣接する凹溝２４ｇの底同士の垂直方向の距離は、垂直段差ΔＨに同じ「垂直段差ΔＧ」である。
なお、以上は、突条２４ｈ毎および凹溝２４ｇ毎で、垂直段差ΔＨ（垂直段差ΔＧに同じ）が同じになっているが、本発明はこれに限定されるものではない。例えば、突条２４ｈ毎に平行部分幅ΔＬおよび垂直段差ΔＨの一方または両方が相違してもよいし、凹溝２４ｇ毎に平行部分幅ΔＬおよび垂直段差ΔＧの一方または両方が相違してもよい。また、薄肉幅Ｌ、薄肉量Ｈおよび波の数（突条２４ｈおよび凹溝２４ｇの数）も限定するものではない。 The distance corresponding to the wavelength of the wave, that is, the distance in the parallel direction between the apexes of the adjacent protrusions 24h and the distance in the parallel direction between the bottoms of the adjacent concave grooves 24g are “parallel portion width ΔL”. Yes.
The distance corresponding to the wave height, that is, the vertical distance between the apexes of the adjacent ridges 24h is “vertical step ΔH”, and the vertical distance between the bottoms of the adjacent concave grooves 24g is the vertical step. The same “vertical step ΔG” as ΔH.
In the above description, the vertical step ΔH (same as the vertical step ΔG) is the same for each protrusion 24h and for each concave groove 24g, but the present invention is not limited to this. For example, one or both of the parallel part width ΔL and the vertical step ΔH may be different for each protrusion 24h, or one or both of the parallel part width ΔL and the vertical step ΔG may be different for each groove 24g. . Further, the thin wall width L, the thin wall amount H, and the number of waves (the number of the protrusions 24h and the concave grooves 24g) are not limited.

（変形例の作用効果）
したがって、波状の薄肉範囲２４が押圧加工によって成形される際、母材２は、先端縁２３に近い程圧縮量が大きくなるように垂直方向で圧縮されると共に平行方向に伸ばされ、巨視的に剪断変形している。
一方、メッキ層３は圧縮変形および剪断変形され、突条２４ｈの頂点から凹溝２４ｇの底に向かって、またはこれとは反対の方向に向かって移動する。
このとき、特定の凹溝２４ｇの方向に移動したメッキ層３の一部が、隣接する突条２４ｈを乗り越えて隣接する凹溝２４ｇに移動することはなく、同様に、特定の突条２４ｈの方向に移動したメッキ層３の一部が、隣接する凹溝２４ｇを経由して隣接する突条２４ｈに移動することはない。
したがって、メッキ層３の表層部が先端縁２３の端面に手繰り寄せられて集積することはなく、微細メッキ条４は発生しない。 (Function and effect of the modified example)
Therefore, when the wavy thin-walled area 24 is formed by pressing, the base material 2 is compressed in the vertical direction and stretched in the parallel direction so that the amount of compression increases as it approaches the tip edge 23, macroscopically. Shear deformation.
On the other hand, the plating layer 3 is subjected to compression deformation and shear deformation, and moves from the top of the protrusion 24h toward the bottom of the concave groove 24g or in the opposite direction.
At this time, a part of the plating layer 3 that has moved in the direction of the specific groove 24g does not move over the adjacent protrusion 24h and move to the adjacent groove 24g. A part of the plating layer 3 moved in the direction does not move to the adjacent protrusion 24h via the adjacent concave groove 24g.
Therefore, the surface layer portion of the plating layer 3 is not brought close to the end surface of the leading edge 23 and accumulated, and the fine plating strip 4 is not generated.

（使用状況）
図８は本発明の実施の形態１に係る圧着端子の使用状況を説明するものであって、（ａ）は側面視の断面図、（ｂ）は正面視の断面図である。
図８の（ａ）および図８の（ｂ）において、コネクタハウジング（以下「ハウジング」と称す）２００に圧着端子１００が収納されている。
このとき、圧着端子１００には電線９０が接続され、電線９０を構成する芯線９２が芯線加締め部２０に保持され、電線９０を構成する被覆９３が被覆加締め部３０に保持されている。 (Status of use)
FIGS. 8A and 8B are diagrams for explaining a use state of the crimp terminal according to the first embodiment of the present invention, in which FIG. 8A is a sectional view in side view and FIG. 8B is a sectional view in front view.
8A and 8B, the crimp terminal 100 is housed in a connector housing (hereinafter referred to as “housing”) 200.
At this time, the electric wire 90 is connected to the crimp terminal 100, the core wire 92 constituting the electric wire 90 is held by the core wire crimping portion 20, and the covering 93 constituting the electric wire 90 is held by the covering crimping portion 30.

ハウジング２００は、互いに平行に配置された複数の端子収納室２１０を具備し、端子収納室２１０に圧着端子１００が挿入されている。また、ハウジング２００の一方の面（図８において上側の面）には、ロックアーム２２０が設けられ、他方の面（図８において下側の面）にサイドスペーサ２３０が装着されている。
さらに、一方の端面（図８の（ａ）において左側の面）に開口し、端子収納室２１０に連通する端子挿入孔２４０が設けられ、端子挿入孔２４０に雄端子のタブ３００が挿入されている。
さらに、端子挿入孔２４０に近い位置にランス２５０が設けられ、ランス２５０に圧着端子１００の係止突起１３が係止している。 The housing 200 includes a plurality of terminal storage chambers 210 arranged in parallel to each other, and the crimp terminal 100 is inserted into the terminal storage chamber 210. Further, a lock arm 220 is provided on one surface (upper surface in FIG. 8) of the housing 200, and a side spacer 230 is mounted on the other surface (lower surface in FIG. 8).
Further, a terminal insertion hole 240 that opens to one end surface (the left side surface in FIG. 8A) and communicates with the terminal storage chamber 210 is provided, and the male terminal tab 300 is inserted into the terminal insertion hole 240. Yes.
Further, a lance 250 is provided at a position close to the terminal insertion hole 240, and the locking projection 13 of the crimp terminal 100 is locked to the lance 250.

そして、端子挿入孔２４０を貫通した雄端子のタブ３００は、圧着端子１００の接触部１０（バネ接点１１）に接触している。このとき、タブ３００と接触部１０とは接触点Ａにおいて直接接触し、タブ３００とバネ接点１１とは接触点Ｂにおいて直接接触しているから、電気的通電性能が担保されている。すなわち、圧着端子１００には微細メッキ条４が発生しないから、接触点Ａおよび接触点Ｂに微細メッキ条４が介在することはなく、電気的通電性能に悪影響が生じることはない（図８の（ａ）参照）。 The male terminal tab 300 penetrating the terminal insertion hole 240 is in contact with the contact portion 10 (spring contact 11) of the crimp terminal 100. At this time, the tab 300 and the contact portion 10 are in direct contact at the contact point A, and the tab 300 and the spring contact 11 are in direct contact at the contact point B, so that electrical conduction performance is ensured. That is, since the fine plating strip 4 does not occur in the crimping terminal 100, the fine plating strip 4 does not intervene at the contact point A and the contact point B, and the electrical conduction performance is not adversely affected (FIG. 8). (See (a)).

また、端子収納室２１０同士を仕切る隔壁２６０には、端子収納室２１０同士を連通する隔壁孔Ｃが形成されているが、圧着端子１００には微細メッキ条４が発生しないから、隔壁孔Ｃに微細メッキ条４が侵入することはなく、隣接する端子収納室２１０に配置された圧着端子１００の間で短絡（ショート）が起こることはない（図８の（ｂ）参照）。
［実施の形態２］
図９および図１０は本発明の実施の形態２に係る圧着端子の製造方法を説明するものであって、図９は製造工程の一部を模式的に示す断面図、図１０は比較材における製造工程の一部を模式的に示す断面図である。なお、実施の形態１と同じ部位については同じ名称および同じ符号を付し、説明を書略する。 Further, the partition wall 260 that separates the terminal storage chambers 210 is formed with a partition hole C that communicates the terminal storage chambers 210, but the fine plating strip 4 does not occur in the crimp terminal 100. The fine plating strip 4 does not enter, and a short circuit does not occur between the crimp terminals 100 arranged in the adjacent terminal storage chambers 210 (see FIG. 8B).
[Embodiment 2]
9 and 10 illustrate a method of manufacturing a crimp terminal according to Embodiment 2 of the present invention. FIG. 9 is a cross-sectional view schematically showing a part of the manufacturing process, and FIG. It is sectional drawing which shows a part of manufacturing process typically. In addition, about the same site | part as Embodiment 1, the same name and the same code | symbol are attached | subjected, and description is abbreviate | omitted.

（圧着端子）
図９において、板材１における圧着端子１００の芯線加締め部２０に相当する部位を、押圧金型（プレス駒に同じ）８３によって押圧加工して、加締め片部２２の先端縁２３から所定の範囲に相当する範囲に階段状の薄肉範囲２４を含む凹部２８を具備する押圧材１０３を成形する（第１工程）。このとき、凹部２８は、階段状の薄肉範囲２４と、テーパ状の傾斜面２７と、薄肉範囲２４と傾斜面２７とを間に成形された平坦範囲２６とを有している。
次に、打ち抜き金型８４によって、薄肉範囲２４（または平坦範囲２６の薄肉範囲２４に近い位置）において押圧材１０３を打ち抜き加工して、芯線加締め部２０の外郭形状を具備する打ち抜き材１０４を成形する（第２工程）。そうすると、前記のように、押圧材１０３の薄肉範囲２４には微細メッキ条４が発生しないから、打ち抜き材１０４は微細メッキ条４を有しない。
そして、打ち抜き材１０４はその後に実行される曲げ加工によって、接触部１０、芯線加締め部２０および被覆加締め部３０が成形され、圧着端子１００が完成するから（図１参照）、圧着端子１００は微細メッキ条４を有しない。 (Crimp terminal)
In FIG. 9, a portion corresponding to the core wire crimping portion 20 of the crimp terminal 100 in the plate material 1 is pressed by a pressing die (same as the press piece) 83, and a predetermined distance from the tip edge 23 of the crimping piece portion 22 is obtained. The pressing material 103 including the concave portion 28 including the step-like thin-walled range 24 in a range corresponding to the range is formed (first step). At this time, the concave portion 28 has a step-like thin range 24, a tapered inclined surface 27, and a flat range 26 formed between the thin range 24 and the inclined surface 27.
Next, the pressing material 103 is punched by the punching die 84 in the thin range 24 (or a position close to the thin range 24 of the flat range 26), and the punching material 104 having the outline shape of the core wire crimping portion 20 is obtained. Molding (second step). Then, as described above, since the fine plating strip 4 does not occur in the thin range 24 of the pressing material 103, the punching material 104 does not have the fine plating strip 4.
Then, the punching material 104 is formed by the bending process performed thereafter to form the contact portion 10, the core wire crimping portion 20, and the covering crimping portion 30, thereby completing the crimp terminal 100 (see FIG. 1). Does not have the fine plating strip 4.

（比較材）
図１０において、板材１における比較材９００の芯線加締め部２０に相当する部位を、押圧金型（プレス駒に同じ）８５によって押圧加工して、加締め片部２２の先端縁２３から所定の範囲に相当する範囲にテーパ状の傾斜薄肉範囲９２４を含む凹部９２８を具備する押圧材１０５を成形する（第１工程）。このとき、凹部９２８は、テーパ状の傾斜薄肉範囲９２４と、テーパ状の傾斜面９２７と、傾斜薄肉範囲９２４と傾斜面９２７との間に成形された平坦範囲９２６とを有している。
次に、打ち抜き金型８６によって、傾斜薄肉範囲９２４の平坦範囲９２６に近い位置において押圧材１０５を打ち抜き加工して、芯線加締め部２０の外郭形状を具備する打ち抜き材１０６を成形する（第２工程）。そうすると、押圧材１０５の凹部９２８（正確には、傾斜薄肉範囲９２４と平坦範囲９２６との隅部）には、前記のように微細メッキ条４が発生するおそれがあるものの、傾斜薄肉範囲９２４において打ち抜き加工が実行されるから、打ち抜き材１０６に微細メッキ条４が取り込まれることがない。
そして、打ち抜き材１０６はその後に実行される曲げ加工によって、接触部、芯線加締め部および被覆加締め部が成形され、比較材９００が完成するから（何れも図示しない）、比較材９００は微細メッキ条４を有しない。 (Comparison material)
In FIG. 10, a portion corresponding to the core wire crimping portion 20 of the comparative material 900 in the plate material 1 is pressed by a pressing die (same as the press piece) 85, and a predetermined distance from the tip edge 23 of the crimping piece portion 22 is obtained. The pressing member 105 including the concave portion 928 including the tapered inclined thin wall range 924 in the range corresponding to the range is formed (first step). At this time, the recess 928 has a tapered inclined thin area 924, a tapered inclined surface 927, and a flat area 926 formed between the inclined thin area 924 and the inclined surface 927.
Next, the pressing material 105 is punched by a punching die 86 at a position close to the flat range 926 of the inclined thin wall range 924, and the punching material 106 having the outline shape of the core wire crimping portion 20 is formed (second). Process). Then, although the fine plating strip 4 may be generated in the concave portion 928 (more precisely, the corner between the inclined thin range 924 and the flat range 926) of the pressing material 105, in the inclined thin range 924 Since the punching process is executed, the fine plating strip 4 is not taken into the punching material 106.
Then, the punching material 106 is formed into a contact portion, a core wire caulking portion, and a covering caulking portion by a bending process performed thereafter, and the comparison material 900 is completed (all are not shown). No plating strip 4 is provided.

（作用効果）
以上のように、本発明は、押圧加工を実行した後、打ち抜き加工を実行するから、仮に、押圧材１０３の凹部２８に微細メッキ条４が発生するおそれがあったとしても、微細メッキ条４が発生するおそれがある位置が取り込まれないように打ち抜くことによって、打ち抜き材１０４は微細メッキ条４を有しないものになる。同様に、押圧材１０５の凹部９２８に微細メッキ条４が発生するおそれがあるとしても、微細メッキ条４が発生するおそれがある位置が取り込まれないように打ち抜くことによって、打ち抜き材１０６は微細メッキ条４を有しないものになる。
すなわち、従来のように、打ち抜き加工を実行した後に押圧加工を実行したのでは、テーパ状の傾斜薄肉範囲９２４を具備する比較材９００には、微細メッキ条４が生じるおそれがあるものの、本発明によると、比較材９００であっても、微細メッキ条４を有しないものにすることが可能になる。 (Function and effect)
As described above, according to the present invention, the punching process is performed after the pressing process is performed. Therefore, even if the fine plating strip 4 may be generated in the concave portion 28 of the pressing material 103, the fine plating strip 4 is provided. The punching material 104 does not have the fine plating strip 4 by punching so that a position where there is a risk of occurrence of the punching is not taken in. Similarly, even if the fine plating strip 4 may be generated in the concave portion 928 of the pressing material 105, the punching material 106 is finely plated by punching so that a position where the fine plating strip 4 may be generated is not taken in. It does not have Article 4.
That is, when the pressing process is performed after the punching process is performed as in the prior art, the fine plating strip 4 may be generated in the comparative material 900 having the tapered inclined thin wall range 924. According to this, even the comparative material 900 can be made to have no fine plating strip 4.

以上、本発明を実施の形態をもとに説明した。この実施の形態は例示であり、それらの各構成要素及びその組合せにいろいろな変形例が可能なこと、またそうした変形例も本発明の範囲にあることは当業者に理解されるところである。 The present invention has been described based on the embodiments. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to each of those components and combinations thereof, and such modifications are also within the scope of the present invention.

本発明は以上であるから、各種雌圧着端子および各種雄圧着端子としておよびそれらの製造方法として広く利用することができる。 Since the present invention is as described above, it can be widely used as various female crimp terminals and various male crimp terminals and as a manufacturing method thereof.

１：板材
２：母材
３：メッキ層
４：微細メッキ条
１０：接触部
１１：バネ接点
１２：スタビライザー
１３：係止突起
２０：芯線加締め部
２１：基底部
２１ａ：基底部内面
２２：加締め片部
２２ａ：加締め片部内面
２２ｂ：加締め片部外面
２３：先端縁
２４：薄肉範囲
２４ｇ：凹溝
２４ｈ：突条
２４ｐ：平行部分
２４ｖ：垂直部分
２５：セレーション
２６：平坦範囲
２７：傾斜面
２８：凹部
３０：被覆加締め部
３１：被覆基底部
３２：被覆加締め片部
３３：先端縁
３４：面取り部
８１：打ち抜き金型
８２：押圧金型
８３：押圧金型
８４：打ち抜き金型
８５：押圧金型
８６：打ち抜き金型
９０：電線
９１：素線
９２：芯線
９３：被覆
１００：圧着端子
１０１：打ち抜き材
１０２：押圧材
１０３：押圧材
１０４：打ち抜き材
１０５：押圧材
１０６：打ち抜き材
２００：ハウジング
２１０：端子収納室
２２０：ロックアーム
２３０：サイドスペーサ
２４０：端子挿入孔
２５０：ランス
２６０：隔壁
３００：タブ
９００：比較材
９０２：比較押圧材
９２４：傾斜薄肉範囲
９２６：平坦範囲
９２７：傾斜面
９２８：凹部
９８２：比較押圧金型
Ａ：接触点
Ｂ：接触点
Ｃ：隔壁孔
Ｈ：薄肉量
Ｌ：薄肉幅
Ｔｇ：距離
Ｔｈ：距離
ΔＧ：垂直段差
ΔＨ：垂直段差
ΔＬ：平行部分幅 1: Plate material 2: Base material 3: Plating layer 4: Fine plating strip 10: Contact part 11: Spring contact 12: Stabilizer 13: Locking protrusion 20: Core caulking part 21: Base part 21a: Base part inner surface 22: Addition Clamping piece portion 22a: Clamping piece portion inner surface 22b: Clamping piece portion outer surface 23: Tip edge 24: Thin wall range 24g: Concave groove 24h: Projection 24p: Parallel portion 24v: Vertical portion 25: Serration 26: Flat range 27: Inclined surface 28: Concave portion 30: Covered caulking portion 31: Covered base portion 32: Covered caulking piece portion 33: Tip edge 34: Chamfered portion 81: Punching die 82: Pressing die 83: Pressing die 84: Punching die Mold 85: Pressing mold 86: Punching mold 90: Electric wire 91: Wire 92: Core wire 93: Coating 100: Crimp terminal 101: Punching material 102: Pressing material 103: Pressing material 104: Punching 105: Pressing material 106: Punching material 200: Housing 210: Terminal storage chamber 220: Lock arm 230: Side spacer 240: Terminal insertion hole 250: Lance 260: Partition 300: Tab 900: Comparative material 902: Comparative pressing material 924: Inclined Thin range 926: Flat range 927: Inclined surface 928: Concave 982: Comparative pressing mold A: Contact point B: Contact point C: Partition hole H: Thin wall amount L: Thin wall width Tg: Distance Th: Distance ΔG: Vertical step ΔH : Vertical step ΔL: Parallel part width

Claims

A core wire crimping portion that holds the core wire of the electric wire that is formed of a base material and a plate material including a plating layer and includes a core wire composed of a plurality of strands,
The core wire caulking part includes a base part and caulking piece parts respectively extending on both side edges of the base part,
A crimp terminal, wherein a step-like thin range in which the plate thickness gradually decreases as the tip edge is closer to the tip edge of the crimping piece portion is formed.

A core wire crimping portion that holds the core wire of the electric wire that is formed of a base material and a plate material including a plating layer and includes a core wire composed of a plurality of strands,
The core wire caulking part includes a base part and caulking piece parts respectively extending on both side edges of the base part,
A plurality of protrusions and a plurality of concave grooves parallel to the tip edge are formed on one surface of the crimp piece along the tip edge of the crimp piece,
The distance between the top of the ridge and the other surface of the caulking piece decreases as the distance from the tip edge decreases.
The crimp terminal, wherein the distance between the bottom of the concave groove and the other surface of the crimping piece portion decreases as the concave groove becomes closer to the tip edge.

The base material is copper or a copper alloy,
The crimp terminal according to claim 1, wherein the plated layer is tin plated on the base material or tin plated on a nickel base plated on the base material.

A method for producing a crimp terminal having a core wire crimping portion for holding the core wire of an electric wire comprising a core wire composed of a plurality of strands,
The core wire caulking part includes a base part and caulking piece parts respectively extending on both side edges of the base part,
A stepped thin range in which the plate thickness gradually decreases as the closer to the tip edge, the taper-shaped thin range in which the plate thickness gradually decreases is formed within a predetermined range from the tip edge of the crimping piece portion. And
A first step of pressing a plate material having a base material and a plating layer, and forming a pressing material having the thin-walled range in a range corresponding to a predetermined range from a tip edge of the crimping piece portion;
A method of manufacturing a crimp terminal, comprising: a second step of punching the pressing material to form a punching material having an outer shape of the core crimped portion.

A method for producing a crimp terminal having a core wire crimping portion for holding the core wire of an electric wire comprising a core wire composed of a plurality of strands,
The core wire caulking part includes a base part and caulking piece parts respectively extending on both side edges of the base part,
A plurality of protrusions and a plurality of recesses parallel to the tip edge along the tip edge of the crimping piece portion within a predetermined range from the tip edge of the crimping piece portion on one surface of the crimping piece portion A thin-walled range having a groove is formed, and the distance between the apex of the protrusion and the other surface of the crimping piece decreases as the tip edge approaches, and the bottom of the concave groove and the crimping piece Decreases as the distance from the other surface becomes closer to the tip edge,
A first step of pressing a range corresponding to a predetermined range from a tip edge of the caulking piece portion of the plate material having a base material and a plating layer, and molding a pressing material having the thin range;
A method of manufacturing a crimp terminal, comprising: a second step of punching the pressing material to form a punching material having an outer shape of the core crimped portion.

The base material is copper or a copper alloy,
6. The method of manufacturing a crimp terminal according to claim 4, wherein the plating layer is tin plated on the base material or tin plated on a nickel base plated on the base material.