JP2022050114A - Terminal manufacturing method - Google Patents

Terminal manufacturing method Download PDF

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JP2022050114A
JP2022050114A JP2020156520A JP2020156520A JP2022050114A JP 2022050114 A JP2022050114 A JP 2022050114A JP 2020156520 A JP2020156520 A JP 2020156520A JP 2020156520 A JP2020156520 A JP 2020156520A JP 2022050114 A JP2022050114 A JP 2022050114A
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terminal
electric wire
constituent
electrical connection
carrier
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JP7451048B2 (en
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高立 山本
Takatatsu Yamamoto
建彦 上原
Tatsuhiko Uehara
功一 藤井
Koichi Fujii
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Yazaki Corp
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Yazaki Corp
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Abstract

To provide a terminal manufacturing method that can properly manufacture a terminal.SOLUTION: A terminal manufacturing method includes a pressing step of forming a step portion 5 in an intermediate portion constituent portion 203 constituting an intermediate portion 3 in a pre-machining terminal assembly, and in this pressing step, in a state in which the relative position of a pair of carriers 205 and each electrical connection portion constituent portion 202 is fixed, while allowing a carrier connecting portion 206 to elongate, an extruded target area 208 straddling the intermediate portion constituent portion 203 from the carrier connecting portion 206 via an electric wire connecting portion constituent portion 204 is formed with a step portion 5 in the intermediate portion constituent portion 203 by extruding to one side of the third direction Z with respect to the electrical connection portion constituent portion 202.SELECTED DRAWING: Figure 6

Description

本発明は、端子製造方法に関する。 The present invention relates to a terminal manufacturing method.

従来の端子に関する技術として、例えば、特許文献1には、被覆電線と、端子と、紫外線硬化性の樹脂部材と、を具備した端子付き電線が開示されている。被覆電線は、絶縁被覆と、絶縁被覆の先端から露出する導体とを具備する。端子は、導体を圧着する導体圧着部と、絶縁被覆を圧着する被覆圧着部とを具備する。樹脂部材は、少なくとも、絶縁被覆から露出した導体を覆う。 As a technique relating to a conventional terminal, for example, Patent Document 1 discloses a wire with a terminal including a coated electric wire, a terminal, and an ultraviolet curable resin member. The coated wire comprises an insulating coating and a conductor exposed from the tip of the insulating coating. The terminal includes a conductor crimping portion for crimping a conductor and a covering crimping portion for crimping an insulating coating. The resin member covers at least the conductor exposed from the insulating coating.

特開2016-181387号公報Japanese Unexamined Patent Publication No. 2016-181387

ところで、このような端子は、例えば、製造する過程において、様々な用途に供する段差が設けられる場合があるが、このような場合であっても適正な生産性の確保が望まれている。 By the way, such a terminal may be provided with a step for various purposes in the manufacturing process, for example, and even in such a case, it is desired to secure appropriate productivity.

本発明は、上記の事情に鑑みてなされたものであって、適正に端子を製造することができる端子製造方法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a terminal manufacturing method capable of appropriately manufacturing terminals.

上記目的を達成するために、本発明に係る端子製造方法は、接続相手と電気的に接続される電気接続部、電線と電気的に接続される電線接続部、及び、前記電気接続部と前記電線接続部との間に介在し相互に連結する中間部を含む端子を構成する展開状態の端子構成部材を複数集めた加工前端子集合体において前記中間部を構成する中間部構成部位に、前記電線接続部に装着されるチューブの端部を突き当て可能な段差部を形成するプレス工程を含み、前記加工前端子集合体は、第1方向に沿って向かい合う一対のキャリア、各前記端子構成部材において前記電線接続部を構成する電線接続部構成部位と前記キャリアとを連結するキャリア連結部、及び、前記第1方向と交差する第2方向に沿って相互に隣り合って位置する前記端子構成部材において前記電気接続部を構成する電気接続部構成部位同士を連結する中間連結部を含み、前記一対のキャリアの間に、各当該キャリアに連結されたそれぞれの前記端子構成部材が前記第2方向に沿って相互に隣り合って位置した状態で、前記電気接続部構成部位同士が前記中間連結部を介して相互に連結されており、前記プレス工程では、前記一対のキャリア、及び、各前記電気接続部構成部位の相対位置を固定した状態で、前記キャリア連結部の伸びを許容しつつ、前記キャリア連結部から前記電線接続部構成部位を介して前記中間部構成部位に跨る押し出し対象領域を、前記電気接続部構成部位に対して、前記第1方向及び前記第2方向と交差する第3方向の一方側に押し出すことで前記中間部構成部位に前記段差部を形成することを特徴とする。 In order to achieve the above object, the terminal manufacturing method according to the present invention includes an electric connection portion electrically connected to a connection partner, an electric wire connection portion electrically connected to an electric wire, and the electrical connection portion and the above. In the unprocessed terminal assembly in which a plurality of deployed terminal constituent members constituting the terminal including the intermediate portion interposed between the electric wire connection portion and the intermediate portion connected to each other are collected, the intermediate portion component portion constituting the intermediate portion is described. The pre-processed terminal assembly includes a pair of carriers facing each other along a first direction, each of the terminal components, including a pressing step of forming a stepped portion capable of abutting the end of a tube mounted on an electric wire connection portion. The carrier connecting portion connecting the electric wire connecting portion constituting portion constituting the electric wire connecting portion and the carrier, and the terminal constituent member located adjacent to each other along a second direction intersecting with the first direction. In the second direction, each of the terminal constituent members connected to the respective carriers includes an intermediate connecting portion that connects the electrical connection portion constituent portions constituting the electrical connection portion in the pair of carriers. The electrical connection portion components are connected to each other via the intermediate connection portion in a state of being positioned adjacent to each other along the same, and in the press process, the pair of carriers and each of the electrical connections are connected. While allowing the carrier connecting portion to stretch while the relative position of the portion constituent portion is fixed, the extruded target region straddling the intermediate portion constituent portion from the carrier connecting portion via the electric wire connecting portion constituent portion is described above. It is characterized in that the step portion is formed in the intermediate portion constituent portion by extruding the electrical connection portion constituent portion to one side of the first direction and the third direction intersecting the second direction.

本発明に係る端子製造方法では、プレス工程において、電気接続部構成部位同士を連結する中間連結部に応力が発生することを抑制した上で中間部構成部位に段差部を形成することができる。この結果、端子製造方法は、適正に端子を製造することができる、という効果を奏する。 In the terminal manufacturing method according to the present invention, in the pressing process, it is possible to form a stepped portion in the intermediate portion constituent portion after suppressing the generation of stress in the intermediate connection portion that connects the electrical connection portion constituent portions. As a result, the terminal manufacturing method has the effect that the terminals can be manufactured properly.

図1は、実施形態に係る端子付き電線の概略構成を表す部分側面図である。FIG. 1 is a partial side view showing a schematic configuration of an electric wire with a terminal according to an embodiment. 図2は、実施形態に係る端子付き電線の概略構成を表す分解斜視図である。FIG. 2 is an exploded perspective view showing a schematic configuration of an electric wire with a terminal according to an embodiment. 図3は、実施形態に係る端子付き電線の概略構成を表す部分斜視図である。FIG. 3 is a partial perspective view showing a schematic configuration of an electric wire with a terminal according to an embodiment. 図4は、実施形態に加工前端子集合体の概略構成を表す部分平面図である。FIG. 4 is a partial plan view showing a schematic configuration of a pre-processed terminal assembly according to an embodiment. 図5は、実施形態に係る端子付き電線製造方法の一例を表すフローチャートである。FIG. 5 is a flowchart showing an example of the electric wire manufacturing method with a terminal according to the embodiment. 図6は、実施形態に係る端子付き電線製造方法におけるプレス工程を説明する部分側面図である。FIG. 6 is a partial side view illustrating a pressing process in the method for manufacturing an electric wire with a terminal according to an embodiment.

以下に、本発明に係る実施形態を図面に基づいて詳細に説明する。なお、この実施形態によりこの発明が限定されるものではない。また、下記実施形態における構成要素には、当業者が置換可能かつ容易なもの、あるいは実質的に同一のものが含まれる。 Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

なお、以下の説明では、互いに交差する第1方向、第2方向、及び、第3方向のうち、第1方向を「軸線方向X」といい、第2方向を「幅方向Y」といい、第3方向を「高さ方向Z」という。ここでは、軸線方向Xと幅方向Yと高さ方向Zとは、相互に略直交する。軸線方向Xは、典型的には、端子が設けられる電線の軸線C1に沿う方向、当該電線が延在する延在方向等に相当する。幅方向Yと高さ方向Zとは、軸線方向Xと交差する交差方向に相当する。また、以下の説明で用いる各方向は、特に断りのない限り、各部が相互に組み付けられた状態での方向を表すものとする。 In the following description, of the first direction, the second direction, and the third direction that intersect each other, the first direction is referred to as "axis direction X" and the second direction is referred to as "width direction Y". The third direction is called "height direction Z". Here, the axial direction X, the width direction Y, and the height direction Z are substantially orthogonal to each other. The axial direction X typically corresponds to the direction along the axis C1 of the electric wire provided with the terminal, the extending direction in which the electric wire extends, and the like. The width direction Y and the height direction Z correspond to the crossing directions intersecting the axial direction X. Further, unless otherwise specified, each direction used in the following description shall represent a direction in which each part is assembled to each other.

[実施形態]
本実施形態に係る端子製造方法は、図1、図2、図3に示す端子付き電線100に適用される端子1を製造するものである。ここでは、本実施形態に係る端子製造方法は、端子1が適用される端子付き電線100の製造方法の一部として実現される。以下では、まず、図1、図2、図3に示す端子付き電線100の基本的な構成について説明し、その後、端子付き電線100の製造方法について詳細に説明する。
[Embodiment]
The terminal manufacturing method according to the present embodiment manufactures the terminal 1 applied to the electric wire 100 with terminals shown in FIGS. 1, 2, and 3. Here, the terminal manufacturing method according to the present embodiment is realized as a part of the manufacturing method of the electric wire 100 with a terminal to which the terminal 1 is applied. Hereinafter, the basic configuration of the terminal-attached electric wire 100 shown in FIGS. 1, 2, and 3 will be described first, and then the manufacturing method of the terminal-attached electric wire 100 will be described in detail.

図1、図2、図3に示す本実施形態の端子付き電線100は、車両に使用されるワイヤハーネス等に適用されるものである。ここで、ワイヤハーネスは、例えば、車両に搭載される各装置間の接続のために、電源供給や信号通信に用いられる複数の電線Wを束にして集合部品とし、コネクタ等で複数の電線Wを各装置に接続するようにしたものである。 The electric wire 100 with a terminal of the present embodiment shown in FIGS. 1, 2 and 3 is applied to a wire harness or the like used in a vehicle. Here, in the wire harness, for example, for connection between each device mounted on a vehicle, a plurality of electric wires W used for power supply and signal communication are bundled into an aggregate part, and a plurality of electric wires W are formed by a connector or the like. Is connected to each device.

本実施形態の端子付き電線100は、電線Wと、当該電線Wの端末に導通接続された端子1と、端子1に装着されるチューブTとを備える。端子付き電線100は、端子1に設けられた段差部5に端部Taを突き当てるようにしてチューブTが装着されることで適正な防水性能の確保を図ったものである。 The electric wire 100 with a terminal of the present embodiment includes an electric wire W, a terminal 1 conductively connected to the terminal of the electric wire W, and a tube T attached to the terminal 1. In the electric wire 100 with a terminal, the tube T is attached so that the end Ta abuts against the stepped portion 5 provided in the terminal 1, thereby ensuring appropriate waterproof performance.

電線Wは、車両に配索され、各部を電気的に接続するものである。電線Wは、導電性を有する線状の芯線導体W1と、絶縁性を有する絶縁被覆W2とを含んで構成される。電線Wは、絶縁被覆W2によって芯線導体W1を被覆した絶縁電線である。芯線導体W1は、例えば、導電性を有する金属素線を複数束ねた芯線であるが、当該複数の金属素線を撚り合わせた撚り芯線であってもよい。絶縁被覆W2は、当該芯線導体W1の外側を被覆し絶縁する。電線Wは、軸線方向Xに沿って線状に延在し、少なくとも一方の端末において、絶縁被覆W2が剥ぎ取られており、芯線導体W1が当該絶縁被覆W2から露出している。電線Wは、絶縁被覆W2から露出している当該芯線導体W1の端末に端子1が設けられる。 The electric wire W is arranged in the vehicle and electrically connects each part. The electric wire W includes a linear core wire conductor W1 having conductivity and an insulating coating W2 having insulation. The electric wire W is an insulated wire in which the core wire conductor W1 is coated with the insulating coating W2. The core wire conductor W1 is, for example, a core wire obtained by bundling a plurality of conductive metal strands, but may be a twisted core wire obtained by twisting the plurality of metal strands. The insulating coating W2 covers and insulates the outside of the core wire conductor W1. The electric wire W extends linearly along the axial direction X, the insulating coating W2 is stripped off at at least one terminal, and the core wire conductor W1 is exposed from the insulating coating W2. The electric wire W is provided with a terminal 1 at the terminal of the core wire conductor W1 exposed from the insulating coating W2.

端子1は、電線Wが電気的に接続され、導電性を有する接続相手Mに電気的に接続される端子金具である。端子1は、電気接続部2、中間部3、及び、電線接続部4を含んで構成される。電気接続部2と中間部3と電線接続部4とは、全体が一体で導電性を有する金属部材によって構成される。端子1は、後述するように、例えば、一枚の板金を、電気接続部2、中間部3、電線接続部4等の各部に対応した形状にあわせて、打ち抜き加工、プレス加工、折り曲げ加工等の各種加工によって成形することで各部が立体的に一体で形成される。端子1は、軸線方向Xに沿って一方側から他方側に向かって、電気接続部2、中間部3、電線接続部4の順で並んで相互に連結される。 The terminal 1 is a terminal fitting to which the electric wire W is electrically connected and is electrically connected to the connection partner M having conductivity. The terminal 1 includes an electrical connection portion 2, an intermediate portion 3, and an electric wire connection portion 4. The electrical connection portion 2, the intermediate portion 3, and the electric wire connection portion 4 are integrally composed of a metal member having conductivity as a whole. As will be described later, the terminal 1 has, for example, punching, pressing, bending, etc., according to the shape corresponding to each part such as the electric connection part 2, the intermediate part 3, and the electric wire connection part 4. Each part is three-dimensionally integrally formed by molding by various processing of. The terminals 1 are connected to each other in the order of the electrical connection portion 2, the intermediate portion 3, and the electric wire connection portion 4 from one side to the other along the axial direction X.

電気接続部2は、接続相手Mと電気的に接続される部分である。一例として、本実施形態の接続相手Mは、車体ボディ等の接地面(アース部材)である。電気接続部2は、例えば、接地面によって構成される接続相手Mに対してボルト締結されることで当該接続相手Mに電気的に接続される。電気接続部2は、例えば、ボルト締結孔が形成された締結部、ボルト締結時の回転を規制する廻り止め部、他の導電部材と組み合わせて一体化するための組み合わせ構造、各種切り欠き・インデント等を含み、いわゆるLA端子形状に形成される。なお、上記に限らず、接続相手Mは、種々の形状の相手端子であってもよく、この場合、電気接続部2は、当該相手端子の形状に対応して、例えば、雄型の端子形状や雌型の端子形状に形成される。 The electrical connection portion 2 is a portion that is electrically connected to the connection partner M. As an example, the connection partner M of the present embodiment is a ground contact surface (earth member) of a vehicle body or the like. The electrical connection portion 2 is electrically connected to the connection partner M by, for example, bolting to the connection partner M configured by the ground plane. The electrical connection portion 2 is, for example, a fastening portion in which a bolt fastening hole is formed, a detent portion that regulates rotation at the time of bolt fastening, a combined structure for being integrated in combination with another conductive member, and various notches / indents. Etc., and are formed in a so-called LA terminal shape. Not limited to the above, the connection partner M may be a partner terminal having various shapes. In this case, the electrical connection portion 2 corresponds to the shape of the partner terminal, for example, a male terminal shape. Or female terminal shape.

中間部3は、電気接続部2と電線接続部4との間に介在し、当該電気接続部2と当該電線接続部4とを相互に連結し導通する部分である。端子1は、電気接続部2と電線接続部4とが中間部3を介して電気的に接続され、当該電線接続部4を介して電気接続部2と電線Wの芯線導体W1とが電気的に接続され導通される。 The intermediate portion 3 is a portion that is interposed between the electric connection portion 2 and the electric wire connection portion 4, and is a portion that connects the electric connection portion 2 and the electric wire connection portion 4 to each other and conducts conduction. In the terminal 1, the electric connection portion 2 and the electric wire connection portion 4 are electrically connected via the intermediate portion 3, and the electric connection portion 2 and the core wire conductor W1 of the electric wire W are electrically connected via the electric wire connection portion 4. It is connected to and conducted.

電線接続部4は、電線Wと電気的に接続される部分である。一例として、本実施形態の電線接続部4は、電線Wの端末に加締められ圧着される圧着部を構成する。つまり、本実施形態の端子1は、いわゆる圧着端子を構成する。電線接続部4は、基部41、及び、二組の一対のバレル片42、43を含んで構成される。電線接続部4は、基部41と二組の一対のバレル片42、43とによって電線Wに対して加締められ圧着される。 The electric wire connecting portion 4 is a portion electrically connected to the electric wire W. As an example, the electric wire connecting portion 4 of the present embodiment constitutes a crimping portion that is crimped and crimped to the terminal of the electric wire W. That is, the terminal 1 of the present embodiment constitutes a so-called crimp terminal. The wire connecting portion 4 includes a base 41 and two sets of a pair of barrel pieces 42, 43. The electric wire connecting portion 4 is crimped and crimped to the electric wire W by the base 41 and two pairs of barrel pieces 42, 43.

具体的には、電線接続部4は、基部41、及び、二組の一対のバレル片42、43によって、導体圧着部44、中間部45、及び、被覆圧着部46が構成される。導体圧着部44は、基部41の一部、及び、一対のバレル片42によって構成される。中間部45は、基部41の他の一部によって構成される。被覆圧着部46は、基部41の残りの一部、及び、一対のバレル片43によって構成される。電線接続部4は、軸線方向Xに沿って中間部3側から反対側に向かって、導体圧着部44、中間部45、被覆圧着部46の順で並んで相互に連結される。電線接続部4は、軸線方向Xに対して被覆圧着部46と導体圧着部44との間に中間部45が介在することで、一対のバレル片42と一対のバレル片43とが分断して形成されている。 Specifically, the electric wire connecting portion 4 includes a conductor crimping portion 44, an intermediate portion 45, and a covering crimping portion 46 by a base portion 41 and a pair of barrel pieces 42 and 43. The conductor crimping portion 44 is composed of a part of the base portion 41 and a pair of barrel pieces 42. The intermediate portion 45 is composed of another part of the base portion 41. The covering crimping portion 46 is composed of the remaining part of the base 41 and a pair of barrel pieces 43. The electric wire connecting portions 4 are connected to each other in the order of the conductor crimping portion 44, the intermediate portion 45, and the covering crimping portion 46 from the intermediate portion 3 side to the opposite side along the axial direction X. In the electric wire connecting portion 4, the pair of barrel pieces 42 and the pair of barrel pieces 43 are separated by the intermediate portion 45 interposed between the coated crimping portion 46 and the conductor crimping portion 44 in the axial direction X. It is formed.

具体的には、基部41は、軸線方向Xに沿って延在し、端子1の圧着前の状態において、略U字状に形成された電線接続部4の底壁となる部分である。基部41は、板厚方向が高さ方向Zに沿う板状に形成される。基部41は、圧着加工の際に電線Wの端部が載置される。基部41は、軸線方向Xの一方側に中間部3を介して電気接続部2が連結される。基部41は、各部において幅方向Yの両端部が高さ方向Zに沿って立ち上がっている。基部41は、軸線方向Xに沿って、導体圧着部44、中間部45、及び、被覆圧着部46に渡って連続する。 Specifically, the base portion 41 extends along the axial direction X and becomes a bottom wall of the electric wire connecting portion 4 formed in a substantially U shape in the state before crimping of the terminal 1. The base 41 is formed in a plate shape in which the plate thickness direction is along the height direction Z. The end portion of the electric wire W is placed on the base portion 41 during the crimping process. The base 41 is connected to one side of the axial direction X via an intermediate portion 3 with an electrical connection portion 2. In each portion of the base portion 41, both ends in the width direction Y stand up along the height direction Z. The base portion 41 is continuous along the axial direction X over the conductor crimping portion 44, the intermediate portion 45, and the covering crimping portion 46.

一対のバレル片42は、基部41の一部と共に導体圧着部44を構成する部分である。導体圧着部44は、電線Wの芯線導体W1に対して加締められ圧着されることで、当該芯線導体W1と電気的に接続される部分である。一対のバレル片42は、当該導体圧着部44において、基部41から幅方向Yの両側にそれぞれ帯状に延びて形成され、電線Wへの圧着加工前の状態において、U字状に形成された電線接続部4の側壁となる。導体圧着部44は、基部41と一対のバレル片42とによって、当該一対のバレル片42の間に配置された電線Wの芯線導体W1の外側を包んで芯線導体W1に対して加締められ圧着される。 The pair of barrel pieces 42 is a portion constituting the conductor crimping portion 44 together with a part of the base portion 41. The conductor crimping portion 44 is a portion that is electrically connected to the core wire conductor W1 by being crimped and crimped to the core wire conductor W1 of the electric wire W. The pair of barrel pieces 42 are formed in the conductor crimping portion 44 so as to extend from the base 41 on both sides in the width direction in a band shape, respectively, and are formed in a U shape in a state before crimping to the electric wire W. It becomes the side wall of the connecting portion 4. The conductor crimping portion 44 is crimped against the core wire conductor W1 by wrapping the outside of the core wire conductor W1 of the electric wire W arranged between the pair of barrel pieces 42 by the base portion 41 and the pair of barrel pieces 42. Will be done.

一対のバレル片43は、基部41の一部と共に被覆圧着部46を構成する部分である。被覆圧着部46は、電線Wの絶縁被覆W2に対して加締められ圧着されることで、当該絶縁被覆W2に固定される部分である。一対のバレル片43は、当該被覆圧着部46において基部41から幅方向Yの両側にそれぞれ帯状に延びて形成され、電線Wへの圧着加工前の状態において、U字状に形成された電線接続部4の側壁となる。被覆圧着部46は、基部41と一対のバレル片43とによって、当該一対のバレル片43の間に配置された電線Wの絶縁被覆W2の外側を包んで絶縁被覆W2に対して加締められ圧着される。 The pair of barrel pieces 43 is a portion constituting the covering crimping portion 46 together with a part of the base portion 41. The covering crimping portion 46 is a portion fixed to the insulating coating W2 by being crimped and crimped to the insulating coating W2 of the electric wire W. The pair of barrel pieces 43 are formed in the coated crimping portion 46 extending from the base 41 on both sides in the width direction in a strip shape, respectively, and are connected to the electric wire in a U shape in the state before the crimping process to the electric wire W. It becomes the side wall of the portion 4. The covering crimping portion 46 is crimped against the insulating coating W2 by wrapping the outside of the insulating coating W2 of the electric wire W arranged between the pair of barrel pieces 43 by the base 41 and the pair of barrel pieces 43. Will be done.

そして、本実施形態の端子1は、中間部3に段差部5が形成されている。この段差部5は、後述するチューブTの端部Taを突き当て可能な部分である。段差部5は、中間部3において、電気接続部2に対して高さ方向Zの一方側にオフセットされるようにして形成された段差である。段差部5は、中間部3において、軸線方向Xの中腹部位に形成され、かつ、幅方向Yに沿って延在する。段差部5は、高さ方向Zに沿ってチューブTの肉厚分に相当する高さ(長さ)の段差として形成される。言い換えれば、段差部5は、電気接続部2に対する高さ方向Zに沿ったオフセット量がチューブTの肉厚分に相当する段差として形成される。 The terminal 1 of the present embodiment has a stepped portion 5 formed in the intermediate portion 3. The step portion 5 is a portion to which the end portion Ta of the tube T, which will be described later, can be abutted. The step portion 5 is a step formed in the intermediate portion 3 so as to be offset to one side in the height direction Z with respect to the electrical connection portion 2. The step portion 5 is formed in the middle portion of the axial direction X in the intermediate portion 3 and extends along the width direction Y. The step portion 5 is formed as a step having a height (length) corresponding to the wall thickness of the tube T along the height direction Z. In other words, the step portion 5 is formed as a step in which the offset amount along the height direction Z with respect to the electrical connection portion 2 corresponds to the wall thickness of the tube T.

端子1は、中間部3にこの段差部5が形成されることで、当該段差部5より電線接続部4側の部分が全体として、電気接続部2に対して高さ方向Zに沿ってオフセットされたオフセット領域6を形成する。この構成により、端子1は、電気接続部2が接続相手(接地面)Mに対して締結された状態で、段差部5より電線接続部4側の部分、すなわち、オフセット領域6において、接続相手Mとの間に収容空間部7を形成することができる。この段差部5は、後述するようにこの端子1を製造する過程において中間部3に付される。 Since the step portion 5 is formed in the intermediate portion 3, the terminal 1 is offset from the step portion 5 on the wire connecting portion 4 side as a whole along the height direction Z with respect to the electrical connecting portion 2. The offset region 6 is formed. With this configuration, the terminal 1 is connected to the connection partner in the portion on the wire connection portion 4 side from the step portion 5, that is, in the offset region 6, in a state where the electrical connection portion 2 is fastened to the connection partner (ground plane) M. The accommodation space 7 can be formed between the M and the accommodation space 7. The step portion 5 is attached to the intermediate portion 3 in the process of manufacturing the terminal 1, as will be described later.

チューブTは、防水用の収縮チューブを構成するものである。チューブTは、例えば、熱を加えることによって収縮する熱収縮チューブである。チューブTは、円筒状に形成され、電線接続部4に装着される。より具体的には、チューブTは、段差部5より電線接続部4側の部分、すなわち、オフセット領域6に、電線Wと端子1とに渡って装着される。チューブTは、端部Taが端子1の中間部3に形成された段差部5に突き当てられ、位置決めされる。チューブTは、電線Wと端子1との境界を含む電線接続部4の全体を覆い、当該部分からの水の浸入を防止する。 The tube T constitutes a waterproof shrinkable tube. The tube T is, for example, a heat-shrinkable tube that contracts by applying heat. The tube T is formed in a cylindrical shape and is attached to the electric wire connecting portion 4. More specifically, the tube T is mounted on the portion of the step portion 5 on the wire connecting portion 4 side, that is, in the offset region 6, over the wire W and the terminal 1. The end portion Ta of the tube T is abutted against the stepped portion 5 formed in the intermediate portion 3 of the terminal 1 and is positioned. The tube T covers the entire wire connection portion 4 including the boundary between the wire W and the terminal 1 to prevent water from entering from the portion.

上記のように構成される端子付き電線100は、導体圧着部44が芯線導体W1に圧着され、被覆圧着部46が絶縁被覆W2に圧着されることで、端子1が電線Wの端末に圧着される。この状態で、端子付き電線100は、導体圧着部44と芯線導体W1との間に接点部位が形成され、当該接点部位を介して電線Wの芯線導体W1と端子1とが導通接続される。そして、端子付き電線100は、端子1のオフセット領域6に、電線Wと端子1とに渡ってチューブTが装着される。この状態で、端子付き電線100は、電気接続部2が接地面によって構成される接続相手Mに対してボルト締結されることで電気接続部2と接続相手Mとの間に電気的な接点部位が形成され接続相手Mと導通接続される。このとき、端子付き電線100は、オフセット領域6において、段差部5によって当該オフセット領域6と接続相手(接地面)Mとの間に形成された収容空間部7内にチューブTの肉厚分が収容される。この結果、端子付き電線100は、端子1に装着されるチューブTの肉厚分を段差部5によって吸収することができ、端子1がチューブTに乗り上げないようにすることができるので、端子1を適正に接続相手Mに導通接続することができる。 In the electric wire 100 with terminals configured as described above, the conductor crimping portion 44 is crimped to the core wire conductor W1 and the coated crimping portion 46 is crimped to the insulating coating W2, so that the terminal 1 is crimped to the terminal of the electric wire W. Ru. In this state, in the electric wire 100 with a terminal, a contact portion is formed between the conductor crimping portion 44 and the core wire conductor W1, and the core wire conductor W1 of the electric wire W and the terminal 1 are electrically connected via the contact portion. Then, in the electric wire 100 with a terminal, the tube T is mounted in the offset region 6 of the terminal 1 over the electric wire W and the terminal 1. In this state, in the electric wire 100 with terminals, the electrical connection portion 2 is bolted to the connection partner M configured by the ground plane, so that the electrical contact portion between the electrical connection portion 2 and the connection partner M is established. Is formed and is electrically connected to the connection partner M. At this time, in the electric wire 100 with terminals, in the offset region 6, the wall thickness of the tube T is formed in the accommodation space portion 7 formed between the offset region 6 and the connection partner (ground plane) M by the step portion 5. Be housed. As a result, the electric wire 100 with a terminal can absorb the wall thickness of the tube T mounted on the terminal 1 by the step portion 5, and the terminal 1 can be prevented from riding on the tube T. Can be properly connected to the connection partner M.

次に、上記のように構成される端子1の製造方法について説明する。 Next, a method of manufacturing the terminal 1 configured as described above will be described.

この端子1の製造方法においては、図4に示す加工前端子集合体200に対してプレス加工が施されることで、端子1の各部が形成される。図4に示す加工前端子集合体200は、プレス加工される前の展開状態を表している。加工前端子集合体200は、端子1を構成する展開状態の端子構成部材201を複数集めたものであり、複数の端子構成部材201をキャリア205によって連結した連鎖体を構成する。加工前端子集合体200は、導電性を有する板金を、各端子構成部材201の各部に対応した形状にあわせて打ち抜くことで形成される。このとき、加工前端子集合体200は、種々の切り欠き、孔、若干の凹凸形状等も付される。 In this method of manufacturing the terminal 1, each part of the terminal 1 is formed by pressing the pre-processed terminal assembly 200 shown in FIG. 4. The unprocessed terminal assembly 200 shown in FIG. 4 represents a developed state before being press-processed. The pre-processed terminal assembly 200 is a collection of a plurality of unfolded terminal constituent members 201 constituting the terminal 1, and constitutes a chain in which the plurality of terminal constituent members 201 are connected by a carrier 205. The pre-processed terminal assembly 200 is formed by punching a conductive sheet metal in a shape corresponding to each part of each terminal component 201. At this time, the pre-processed terminal assembly 200 is also provided with various notches, holes, and slightly uneven shapes.

本実施形態の加工前端子集合体200は、軸線方向Xに沿って向かい合う一対のキャリア205の間に複数の端子構成部材201を互い違いに配置するように形成される。この構成により、加工前端子集合体200は、複数の端子構成部材201を効率的に配置し、いわゆる2個取り生産可能な構造とすることができ、廃材部分の削減が可能となる。 The pre-processed terminal assembly 200 of the present embodiment is formed so that a plurality of terminal constituent members 201 are alternately arranged between a pair of carriers 205 facing each other along the axial direction X. With this configuration, the pre-processed terminal assembly 200 can efficiently arrange a plurality of terminal constituent members 201 to form a so-called two-piece production capable structure, and can reduce the waste material portion.

具体的には、加工前端子集合体200は、複数の端子構成部材201、一対のキャリア205、キャリア連結部206、及び、中間連結部207を含んで構成され、これらが一体で形成される。 Specifically, the pre-processed terminal assembly 200 includes a plurality of terminal constituent members 201, a pair of carriers 205, a carrier connecting portion 206, and an intermediate connecting portion 207, and these are integrally formed.

端子構成部材201は、プレス加工を施すことで端子1を構成する展開状態の部材である。端子構成部材201は、プレス加工後において、電気接続部2を構成する電気接続部構成部位202、中間部3を構成する中間部構成部位203、及び、電線接続部4を構成する電線接続部構成部位204を含んで構成される。 The terminal constituent member 201 is a member in a deployed state that constitutes the terminal 1 by being pressed. After press working, the terminal component 201 has an electrical connection portion component 202 that constitutes the electrical connection portion 2, an intermediate portion configuration portion 203 that constitutes the intermediate portion 3, and a wire connection portion configuration that constitutes the wire connection portion 4. It is configured to include site 204.

キャリア205は、幅方向Yに棒状に延在し、複数の端子構成部材201を相互に連結するものである。本実施形態のキャリア205は、軸線方向Xに沿って向かい合って一対で設けられる。各キャリア205は、それぞれにおいて、幅方向Yに沿って並んだ複数の端子構成部材201を相互に連結する。相互に連結される複数の端子構成部材201は、軸線方向Xに対して一対のキャリア205の間に位置する。各キャリア205は、キャリア連結部206を介して各端子構成部材201とそれぞれ連結される。 The carrier 205 extends in a rod shape in the width direction Y and connects a plurality of terminal constituent members 201 to each other. The carriers 205 of the present embodiment are provided in pairs facing each other along the axial direction X. Each carrier 205 connects a plurality of terminal constituent members 201 arranged along the width direction Y to each other. The plurality of terminal constituent members 201 connected to each other are located between the pair of carriers 205 with respect to the axial direction X. Each carrier 205 is connected to each terminal component 201 via a carrier connecting portion 206.

キャリア連結部206は、各端子構成部材201の電線接続部構成部位204とキャリア205とをそれぞれ連結する。キャリア連結部206は、電線接続部構成部位204とキャリア205との間に介在して軸線方向Xに沿って延在し、電線接続部構成部位204の中間部構成部位203側とは反対側の端部とキャリア205とを連結する。 The carrier connecting portion 206 connects the electric wire connecting portion constituent portion 204 and the carrier 205 of each terminal constituent member 201, respectively. The carrier connecting portion 206 is interposed between the electric wire connecting portion constituent portion 204 and the carrier 205 and extends along the axial direction X, and is on the side opposite to the intermediate portion constituent portion 203 side of the electric wire connecting portion constituent portion 204. The end and the carrier 205 are connected.

つまり、加工前端子集合体200は、各端子構成部材201が電線接続部構成部位204でキャリア連結部206を介してキャリア205に連結され、かつ、軸線方向Xに沿って向かい合う一対のキャリア205の間に、複数の端子構成部材201が位置する。加工前端子集合体200は、一対のキャリア205の間に、各キャリア205に連結されたそれぞれの端子構成部材201が相互に隣り合って位置するように構成される。言い換えれば、加工前端子集合体200は、一対のキャリア205の間に、各キャリア205に連結されたそれぞれの端子構成部材201が幅方向Yに沿って交互に互い違いとなって位置するように構成される。 That is, in the pre-processed terminal assembly 200, each terminal component 201 is connected to the carrier 205 via the carrier connecting portion 206 at the wire connecting portion constituent portion 204, and the pair of carriers 205 facing each other along the axial direction X. A plurality of terminal constituent members 201 are located between them. The pre-processed terminal assembly 200 is configured such that the respective terminal component members 201 connected to each carrier 205 are located adjacent to each other between the pair of carriers 205. In other words, the pre-processed terminal assembly 200 is configured such that the respective terminal component members 201 connected to each carrier 205 are alternately and alternately positioned along the width direction Y between the pair of carriers 205. Will be done.

ここでは、加工前端子集合体200は、各キャリア205において、軸線方向Xに沿ってキャリア205側からキャリア連結部206、電線接続部構成部位204、中間部構成部位203、電気接続部構成部位202の順に並んで位置し相互に連結される。そして、加工前端子集合体200は、一方のキャリア205に連結され幅方向Yに沿って隣り合う端子構成部材201の電気接続部構成部位202の間に、他方のキャリア205に連結された端子構成部材201の電気接続部構成部位202が位置する。そして、加工前端子集合体200は、幅方向Yに沿って隣り合う端子構成部材201の電気接続部構成部位202同士が中間連結部207を介して相互に連結されている。 Here, in each carrier 205, the unprocessed terminal assembly 200 has a carrier connecting portion 206, a wire connecting portion constituent portion 204, an intermediate portion constituent portion 203, and an electrical connection portion constituent portion 202 from the carrier 205 side along the axial direction X. They are located side by side in the order of and are connected to each other. Then, the pre-processed terminal assembly 200 has a terminal configuration connected to one carrier 205 and connected to the other carrier 205 between the electrical connection portion constituent portions 202 of the terminal constituent members 201 adjacent to each other along the width direction Y. The electrical connection component component 202 of the member 201 is located. Then, in the pre-processed terminal assembly 200, the electrical connection portion constituent portions 202 of the terminal constituent members 201 adjacent to each other along the width direction Y are connected to each other via the intermediate connecting portion 207.

中間連結部207は、幅方向Yに沿って隣り合う電気接続部構成部位202の間に介在して幅方向Yに沿って延在し、当該電気接続部構成部位202同士を相互に連結する。加工前端子集合体200は、一対のキャリア205の間に、各キャリア205に連結されたそれぞれの端子構成部材201が幅方向Yに沿って相互に隣り合って位置した状態で、電気接続部構成部位202同士が中間連結部207を介して相互に連結されている。つまりここでは、加工前端子集合体200は、一方のキャリア205に連結された端子構成部材201の電気接続部構成部位202と他方のキャリア205に連結された端子構成部材201の電気接続部構成部位202とが中間連結部207によって幅方向Yに沿って連結されている。この構成により、加工前端子集合体200は、端子1の製造の過程で各端子構成部材201がバタつかないようにすることができ、例えば、プレス加工が施される際に当該各端子構成部材201がぶれることを抑制することが可能となる。 The intermediate connecting portion 207 is interposed between adjacent electrical connection portion constituent portions 202 along the width direction Y and extends along the width direction Y, and connects the electrical connection portion constituent portions 202 to each other. The pre-processed terminal assembly 200 has an electrical connection portion configuration in which the terminal constituent members 201 connected to each carrier 205 are positioned adjacent to each other along the width direction Y between the pair of carriers 205. The portions 202 are connected to each other via the intermediate connecting portion 207. That is, here, the unprocessed terminal assembly 200 is the electrical connection portion component portion 202 of the terminal component member 201 connected to one carrier 205 and the electrical connection portion component portion of the terminal component member 201 connected to the other carrier 205. The 202 is connected by the intermediate connecting portion 207 along the width direction Y. With this configuration, the pre-processed terminal assembly 200 can prevent each terminal component 201 from fluttering in the process of manufacturing the terminal 1, for example, each terminal component when press working is performed. It is possible to suppress the shake of 201.

ここで、加工前端子集合体200は、上記のように端子構成部材201が中間連結部207によって連結された状態で、仮に中間部構成部位203に単純に段差部5を形成した場合を想定する。この場合、加工前端子集合体200は、中間部構成部位203に段差部5を付したことで端子構成部材201の電気接続部構成部位202側の位置が軸線方向Xに沿ってキャリア205側に接近するように変位することとなる(図4中の矢印L1参照)。すると、加工前端子集合体200は、幅方向Yに沿って隣り合う電気接続部構成部位202が軸線方向Xに沿って相互に逆方向に変位しようとするため、中間連結部207が相互に引っ張られ当該中間連結部207に大きな応力が発生するおそれがある。 Here, the pre-processed terminal assembly 200 assumes a case where the step portion 5 is simply formed on the intermediate portion constituent portion 203 in a state where the terminal constituent members 201 are connected by the intermediate connecting portion 207 as described above. .. In this case, the pre-processed terminal assembly 200 has the intermediate portion component 203 provided with the step portion 5, so that the position of the terminal component 201 on the electrical connection portion component 202 side is on the carrier 205 side along the axial direction X. It will be displaced so as to approach (see arrow L1 in FIG. 4). Then, in the pre-processed terminal assembly 200, the intermediate connecting portions 207 pull each other because the adjacent electrical connection portion constituent portions 202 along the width direction Y tend to be displaced in opposite directions along the axial direction X. Therefore, a large stress may be generated in the intermediate connecting portion 207.

そこで、本実施形態の端子製造方法では、これを防止すべく、加工前端子集合体200において押し出し対象領域208全体を一括で押し出すようにして中間部構成部位203に段差部5を形成することで、当該段差部5を適正に設けることができるようにしている。 Therefore, in the terminal manufacturing method of the present embodiment, in order to prevent this, the stepped portion 5 is formed in the intermediate portion constituent portion 203 by simultaneously extruding the entire extrusion target region 208 in the pre-machining terminal assembly 200. , The step portion 5 can be appropriately provided.

以下、図4から図6を参照して、端子製造方法を端子付き電線100の製造方法に組み入れた場合を例に挙げて説明する。以下の説明では、図5のフローチャートを基に説明しつつ、適宜図4、図6を参照する。以下で説明する端子付き電線100の製造方法は、作業員が種々の装置、機器、治具等を用いて手作業で行ってもよいし、種々の製造装置によって自動で行われるものであってもよい。 Hereinafter, a case where the terminal manufacturing method is incorporated into the manufacturing method of the electric wire 100 with terminals will be described with reference to FIGS. 4 to 6 as an example. In the following description, FIGS. 4 and 6 will be referred to as appropriate while explaining based on the flowchart of FIG. The method for manufacturing the electric wire 100 with terminals described below may be manually performed by a worker using various devices, devices, jigs, etc., or may be automatically performed by various manufacturing devices. May be good.

本実施形態の端子付き電線100の製造方法は、打ち抜き、プレス工程(ステップS1)、圧着工程(ステップS2-1)、切断工程(ステップS2-2)、及び、チューブ装着工程(ステップS3)を含む。 The method for manufacturing the electric wire 100 with a terminal according to the present embodiment includes a punching, pressing step (step S1), a crimping step (step S2-1), a cutting step (step S2-2), and a tube mounting step (step S3). include.

打ち抜き、プレス工程(ステップS1)では、打ち出し加工機等によって、導電性を有する板金に対して打ち抜き加工が施されると共にプレス成形機等によってプレス加工が施され、これら打ち抜き加工とプレス加工とを繰り返し行うことで、キャリア205付の端子1を作製する。すなわち、この打ち抜き、プレス工程(ステップS1)では、まず、打ち出し加工機等によって、各端子構成部材201の各部に対応した形状にあわせて導電性を有する板金を打ち抜くことで加工前端子集合体200を形成する。そして、この打ち抜き、プレス工程(ステップS1)では、その後さらに、プレス成形機等によって、加工前端子集合体200に対してプレス加工が施される。すなわち、この打ち抜き、プレス工程(ステップS1)では、図6に示すように、プレス成形機等によって、加工前端子集合体200において中間部構成部位203に段差部5を形成する。この場合、段差部5は、上述したように、加工前端子集合体200において押し出し対象領域208全体が一括で押し出されることで中間部構成部位203に形成される。打ち抜き、プレス工程(ステップS1)では、上記のような打ち抜き加工とプレス加工とを繰り返し行う。 In the punching and pressing process (step S1), the conductive sheet metal is punched by a punching machine or the like and pressed by a press forming machine or the like, and these punching and pressing processes are performed. By repeating this process, the terminal 1 with the carrier 205 is manufactured. That is, in this punching and pressing step (step S1), first, a sheet metal having conductivity is punched out according to the shape corresponding to each part of each terminal constituent member 201 by a punching machine or the like, so that the pre-machining terminal assembly 200 is used. To form. Then, in this punching and pressing step (step S1), the pre-machining terminal aggregate 200 is further pressed by a press forming machine or the like. That is, in this punching and pressing step (step S1), as shown in FIG. 6, a step portion 5 is formed in the intermediate portion constituent portion 203 in the pre-machining terminal assembly 200 by a press molding machine or the like. In this case, as described above, the step portion 5 is formed in the intermediate portion constituent portion 203 by collectively extruding the entire extrusion target region 208 in the pre-machining terminal assembly 200. In the punching and pressing process (step S1), the punching process and the pressing process as described above are repeated.

ここでの押し出し対象領域208は、各端子構成部材201において、軸線方向Xに沿ってキャリア連結部206から電線接続部構成部位204を介して中間部構成部位203の中腹に跨る領域である。つまり、この押し出し対象領域208には、電線接続部構成部位204の全領域、キャリア連結部206の電線接続部構成部位204側の一部の領域、及び、中間部構成部位203の電線接続部構成部位204側の一部の領域が含まれる。 The extruded target region 208 here is a region in each terminal component 201 that straddles the middle of the intermediate portion component 203 from the carrier connecting portion 206 along the axial direction X via the wire connecting portion component portion 204. That is, in the extruded target area 208, the entire area of the electric wire connecting portion constituent portion 204, a part of the area of the carrier connecting portion 206 on the electric wire connecting portion constituent portion 204 side, and the electric wire connecting portion configuration of the intermediate portion constituent portion 203. A part of the area on the site 204 side is included.

この打ち抜き、プレス工程(ステップS1)のプレス加工では、一対のキャリア205、及び、各電気接続部構成部位202の相対位置を固定した状態で、キャリア連結部206の伸びを許容しつつ、当該押し出し対象領域208をプレス型等によって電気接続部構成部位202に対して高さ方向Zの一方側に押し出すことで中間部構成部位203に段差部5を形成する。この場合、加工前端子集合体200は、一対のキャリア205、及び、各電気接続部構成部位202が保持機構や治具によって所定位置で保持されることで、相対的な位置関係が固定された状態とされる。そして、加工前端子集合体200は、この状態で押し出し対象領域208全体がプレス型等によって押し出されることによって、中間部構成部位203に段差部5が形成される。 In this punching and pressing process (step S1), the extruding is performed while allowing the carrier connecting portion 206 to elongate while the relative positions of the pair of carriers 205 and the electrical connection portion constituent portions 202 are fixed. By pushing the target region 208 to one side in the height direction Z with respect to the electrical connection portion constituent portion 202 by a press die or the like, the step portion 5 is formed in the intermediate portion constituent portion 203. In this case, in the pre-processed terminal assembly 200, the relative positional relationship is fixed by holding the pair of carriers 205 and each electrical connection portion constituent portion 202 at a predetermined position by a holding mechanism or a jig. It is considered to be a state. Then, in the pre-machining terminal assembly 200, the entire extruded target region 208 is extruded by a press mold or the like in this state, so that a step portion 5 is formed in the intermediate portion constituent portion 203.

このとき、加工前端子集合体200は、プレス型等による押し出し対象領域208の押し出し動作に応じてキャリア連結部206が若干伸びつつ当該キャリア連結部206にも段差部209が形成される。この段差部209は、高さ方向Zに沿って段差部5と略同等の高さ(長さ)の段差として形成される。この段差部209は、キャリア連結部206において伸びを許容しつつ形成されることから、他の部位と比較して板厚が若干薄くなる。またこのとき、段差部5もプレス型等による押し出し対象領域208の押し出し動作に応じて若干伸びることが許容されている。加工前端子集合体200は、段差部5と段差部209とに挟まれた押し出し対象領域208全体が電気接続部構成部位202に対して高さ方向Zの一方側にオフセットされるようにして押し出される。このプレス工程によって形成された段差部5は、中間部構成部位203において軸線方向Xの中腹部位に形成され、かつ、幅方向Yに沿って延在する。 At this time, in the pre-processed terminal assembly 200, the carrier connecting portion 206 is slightly extended according to the pushing operation of the extrusion target region 208 by the press mold or the like, and the step portion 209 is also formed in the carrier connecting portion 206. The step portion 209 is formed as a step having a height (length) substantially equal to that of the step portion 5 along the height direction Z. Since the stepped portion 209 is formed at the carrier connecting portion 206 while allowing elongation, the plate thickness is slightly thinner than that of other portions. At this time, the step portion 5 is also allowed to be slightly extended according to the pushing operation of the pushing target area 208 by the press mold or the like. The pre-processed terminal assembly 200 is extruded so that the entire extruded target area 208 sandwiched between the step portion 5 and the step portion 209 is offset to one side of the electrical connection portion component 202 in the height direction Z. Is done. The step portion 5 formed by this pressing step is formed in the middle portion of the axial direction X in the intermediate portion constituent portion 203, and extends along the width direction Y.

なお、この打ち抜き、プレス工程(ステップS1)では、プレス成形機等によって、電線接続部4の基部41やバレル片42、43等の立体形状もあわせて形成されると共に中間連結部207と電気接続部2との境界が切断される。 In this punching and pressing process (step S1), a three-dimensional shape such as the base 41 of the electric wire connecting portion 4 and the barrel pieces 42, 43 is also formed by a press forming machine or the like, and is electrically connected to the intermediate connecting portion 207. The boundary with the part 2 is cut.

次に、圧着工程(ステップS2-1)では、打ち抜き、プレス工程(ステップS1)の後に、圧着機等によって、加工前端子集合体200に対して圧着加工が施される。すなわち、この圧着工程(ステップS2-1)では、圧着機等によって、端子1の導体圧着部44を電線Wの芯線導体W1に圧着し被覆圧着部46を電線Wの絶縁被覆W2に圧着する。より具体的には、圧着工程(ステップS2-1)では、例えば、アンビルの載置面上に電線接続部4(電線接続部構成部位204)の基部41が載置された状態で二組の一対のバレル片42、43の間に皮剥きされた電線Wを載置する。この場合、電線Wは、露出した芯線導体W1が一対のバレル片42の間に位置し絶縁被覆W2が一対のバレル片43の間に位置するように基部41上に載置される。そして、端子1は、圧着機を構成するアンビル、クリンパによってバレル片42、43が変形され電線Wに加締め圧着される。なおこのとき、この圧着工程(ステップS2-1)では、打ち抜き、プレス工程(ステップS1)で付された段差部5の高さも踏まえて圧着機の高さ調整等が行われる。 Next, in the crimping step (step S2-1), after the punching and pressing steps (step S1), the pre-machining terminal assembly 200 is crimped by a crimping machine or the like. That is, in this crimping step (step S2-1), the conductor crimping portion 44 of the terminal 1 is crimped to the core wire conductor W1 of the electric wire W, and the coated crimping portion 46 is crimped to the insulating coating W2 of the electric wire W by a crimping machine or the like. More specifically, in the crimping step (step S2-1), for example, two sets of the base 41 of the electric wire connecting portion 4 (electric wire connecting portion constituent portion 204) are placed on the mounting surface of the anvil. The peeled electric wire W is placed between the pair of barrel pieces 42 and 43. In this case, the electric wire W is placed on the base 41 so that the exposed core wire conductor W1 is located between the pair of barrel pieces 42 and the insulating coating W2 is located between the pair of barrel pieces 43. Then, the barrel pieces 42 and 43 are deformed by the anvils and crimps constituting the crimping machine, and the terminal 1 is crimped to the electric wire W. At this time, in this crimping step (step S2-1), the height of the crimping machine is adjusted in consideration of the height of the stepped portion 5 attached in the punching and pressing steps (step S1).

また、切断工程(ステップS2-2)では、この圧着工程(ステップS2-1)と同時に並行して、端子切断機等によって、加工前端子集合体200に対して切断加工が施される。すなわち、この切断工程(ステップS2-2)では、端子切断機等によって、電線Wに圧着された端子1をキャリア205から切り離す。この場合、端子1は、電線接続部4側にキャリア連結部206が残留しないようにキャリア連結部206と電線接続部4との境界で切断される。 Further, in the cutting step (step S2-2), in parallel with this crimping step (step S2-1), the pre-machining terminal assembly 200 is cut by a terminal cutting machine or the like. That is, in this cutting step (step S2-2), the terminal 1 crimped to the electric wire W is separated from the carrier 205 by a terminal cutting machine or the like. In this case, the terminal 1 is cut at the boundary between the carrier connecting portion 206 and the electric wire connecting portion 4 so that the carrier connecting portion 206 does not remain on the electric wire connecting portion 4 side.

なお、上述の打ち抜き、プレス工程(ステップS1)のプレス加工を行うプレス成形機、圧着工程(ステップS2-1)を行う圧着機、切断工程(ステップS2-2)を行う端子切断機は、例えば、一体で構成されることでこの技術分野におけるアプリケータと称される機器を構成してもよい。またここでは、切断工程(ステップS2-2)は、圧着工程(ステップS2-1)と同時に並行して行うものとして説明したがこれに限らず、圧着工程(ステップS2-1)の前に当該圧着工程(ステップS2-1)とは別工程として単独で行ってもよい。 The press forming machine that performs the punching and pressing process (step S1), the crimping machine that performs the crimping process (step S2-1), and the terminal cutting machine that performs the cutting process (step S2-2) are, for example. , A device called an applicator in this technical field may be configured by being integrally configured. Further, here, the cutting step (step S2-2) has been described as being performed in parallel with the crimping step (step S2-1), but the present invention is not limited to this, and the cutting step (step S2-1) is prior to the crimping step (step S2-1). It may be performed independently as a separate step from the crimping step (step S2-1).

次に、チューブ装着工程(ステップS3)では、圧着工程(ステップS2-1)、切断工程(ステップS2-2)の後に、端子1に対してチューブTを装着する。すなわち、このチューブ装着工程(ステップS3)では、装着治具等によって、端部Taを段差部5に突き当てるようにしてチューブTを電線接続部4に装着し、これにて端子付き電線100の製造方法を終了する。 Next, in the tube mounting step (step S3), the tube T is mounted on the terminal 1 after the crimping step (step S2-1) and the cutting step (step S2-2). That is, in this tube mounting step (step S3), the tube T is mounted on the electric wire connecting portion 4 so that the end portion Ta abuts against the stepped portion 5 by a mounting jig or the like, whereby the electric wire 100 with a terminal is attached. Finish the manufacturing method.

なお、この端子付き電線100の製造方法は、全ての工程が連続して行われなくてもよく、例えば、打ち抜き工程(ステップS1)と、以降の工程とが別の工場で行われることも許容される。また、この端子付き電線100の製造方法は、端子1に対してチューブTの装着を要しない仕様である場合にはチューブ装着工程(ステップS3)を省略することも許容される。言い換えれば、本実施形態の端子1は、チューブTの端部Taを突き当て可能な段差部5を有するものであるが、必ずしもチューブTの装着を要するものではなく、当該チューブTを装着しない状態で使用されることも許容される。 In the method for manufacturing the electric wire 100 with terminals, not all the steps need to be continuously performed. For example, it is permissible that the punching step (step S1) and the subsequent steps are performed in different factories. Will be done. Further, in the method of manufacturing the electric wire 100 with terminals, if the specifications do not require the attachment of the tube T to the terminal 1, it is permissible to omit the tube attachment step (step S3). In other words, the terminal 1 of the present embodiment has a stepped portion 5 to which the end portion Ta of the tube T can be abutted, but it is not always necessary to attach the tube T, and the tube T is not attached. It is also acceptable to be used in.

以上で説明した端子製造方法(端子付き電線100の製造方法)では、打ち抜き、プレス工程(ステップS1)によって、端子1を構成する端子構成部材201を複数集めた加工前端子集合体200において中間部構成部位203に段差部5を形成する。これにより、この端子製造方法では、電線接続部4に装着されるチューブTの端部Taを突き当て可能な段差部5が中間部3に形成された端子1を製造することができる。 In the terminal manufacturing method (manufacturing method of the electric wire 100 with terminals) described above, the intermediate portion in the pre-processed terminal assembly 200 in which a plurality of terminal constituent members 201 constituting the terminal 1 are collected by the punching and pressing steps (step S1). A step portion 5 is formed on the constituent portion 203. Thereby, in this terminal manufacturing method, it is possible to manufacture the terminal 1 in which the stepped portion 5 to which the end portion Ta of the tube T mounted on the electric wire connecting portion 4 can be abutted is formed in the intermediate portion 3.

ここで、加工前端子集合体200は、上述したように、端子構成部材201が電線接続部構成部位204でキャリア連結部206を介してキャリア205に連結され、かつ、向かい合う一対のキャリア205の間に、各キャリア205に連結されたそれぞれの端子構成部材201が相互に隣り合って位置するように構成される。この構成により、加工前端子集合体200は、複数の端子構成部材201を効率的に配置した上で、電気接続部構成部位202同士を中間連結部207を介して相互に連結した構成とすることができる。この結果、加工前端子集合体200は、いわゆる2個取り生産可能な構造とすることができるので、廃材部分の削減や製造コストの抑制を図り生産性を向上することができる。その上で、加工前端子集合体200は、端子1の製造の過程で各端子構成部材201がバタつかないようにすることができる。 Here, in the pre-processed terminal assembly 200, as described above, the terminal component 201 is connected to the carrier 205 at the wire connection portion component 204 via the carrier connecting portion 206, and is between the pair of carriers 205 facing each other. In addition, each terminal component 201 connected to each carrier 205 is configured to be located adjacent to each other. With this configuration, the pre-processed terminal assembly 200 is configured such that a plurality of terminal component members 201 are efficiently arranged and the electrical connection portion component portions 202 are connected to each other via the intermediate connection portion 207. Can be done. As a result, the pre-processed terminal assembly 200 can have a structure capable of producing so-called two pieces, so that the waste material portion can be reduced, the manufacturing cost can be suppressed, and the productivity can be improved. On top of that, the pre-processed terminal assembly 200 can prevent each terminal component 201 from fluttering in the process of manufacturing the terminal 1.

そして、この端子製造方法では、打ち抜き、プレス工程(ステップS1)において、加工前端子集合体200の一対のキャリア205、及び、各電気接続部構成部位202の相対位置を固定した状態で、キャリア連結部206の伸びを許容しつつ、キャリア連結部206から電線接続部構成部位204を介して中間部構成部位203に跨る押し出し対象領域208を電気接続部構成部位202に対して押し出す。これにより、この端子製造方法では、打ち抜き、プレス工程(ステップS1)において、電気接続部構成部位202側の位置が軸線方向Xに沿ってキャリア205側に変位することを抑制することができる。この結果、端子製造方法では、この打ち抜き、プレス工程(ステップS1)において、幅方向Yに沿って隣接する電気接続部構成部位202が軸線方向Xに沿って相互に逆方向に変位することを抑制し、中間連結部207が相互に引っ張られることを抑制することができる。したがって、この端子製造方法の打ち抜き、プレス工程(ステップS1)では、電気接続部構成部位202同士を連結する中間連結部207に応力が発生することを抑制した上で中間部構成部位203に適正に上記段差部5を形成することができる。 In this terminal manufacturing method, in the punching and pressing steps (step S1), the carriers are connected in a state where the relative positions of the pair of carriers 205 of the pre-machining terminal assembly 200 and the respective electrical connection portion constituent parts 202 are fixed. While allowing the extension of the portion 206, the extrusion target region 208 straddling the intermediate portion constituent portion 203 from the carrier connecting portion 206 via the electric wire connection portion constituent portion 204 is extruded with respect to the electrical connection portion constituent portion 202. As a result, in this terminal manufacturing method, it is possible to prevent the position of the electrical connection portion component 202 side from being displaced toward the carrier 205 side along the axial direction X in the punching and pressing steps (step S1). As a result, in the terminal manufacturing method, in this punching and pressing process (step S1), it is possible to prevent the adjacent electrical connection portion constituent portions 202 along the width direction Y from being displaced in opposite directions along the axis direction X. However, it is possible to prevent the intermediate connecting portions 207 from being pulled together. Therefore, in the punching and pressing step (step S1) of this terminal manufacturing method, stress is suppressed from being generated in the intermediate connecting portion 207 that connects the electrical connecting portion constituent portions 202 to each other, and then the intermediate portion constituent portion 203 is properly formed. The step portion 5 can be formed.

この結果、端子製造方法は、上記のように生産性を向上した上で適正に端子1を製造することができる。 As a result, the terminal manufacturing method can appropriately manufacture the terminal 1 after improving the productivity as described above.

なお、上述した本発明の実施形態に係る端子製造方法は、上述した実施形態に限定されず、特許請求の範囲に記載された範囲で種々の変更が可能である。 The terminal manufacturing method according to the above-described embodiment of the present invention is not limited to the above-mentioned embodiment, and various changes can be made within the scope described in the claims.

以上の説明では、端子製造方法は、端子1が適用される端子付き電線100の製造方法の一部として実現されるものとして説明したがこれに限らず、端子付き電線100の製造方法から独立した製造方法とされてもよい。 In the above description, the terminal manufacturing method has been described as being realized as a part of the manufacturing method of the terminal-attached electric wire 100 to which the terminal 1 is applied, but the present invention is not limited to this, and is independent of the manufacturing method of the terminal-attached electric wire 100. It may be a manufacturing method.

以上の説明では、電線接続部4は、電線Wの端末に加締められ圧着される圧着部を構成するものとして説明したがこれに限らず、ボルト締結、超音波接合、圧接等の接合形式で構成されてもよい。 In the above description, the electric wire connecting portion 4 has been described as forming a crimping portion that is crimped and crimped to the terminal of the electric wire W, but the present invention is not limited to this, and is not limited to this, but may be a bonding form such as bolt fastening, ultrasonic bonding, or pressure welding. It may be configured.

本実施形態に係る端子製造方法は、以上で説明した実施形態、変形例の構成要素を適宜組み合わせることで構成してもよい。 The terminal manufacturing method according to the present embodiment may be configured by appropriately combining the components of the embodiments and modifications described above.

1 端子
2 電気接続部
3 中間部
4 電線接続部
5 段差部
6 オフセット領域
7 収容空間部
41 基部
42、43 バレル片
44 導体圧着部
45 中間部
46 被覆圧着部
100 端子付き電線
200 加工前端子集合体
201 端子構成部材
202 電気接続部構成部位
203 中間部構成部位
204 電線接続部構成部位
205 キャリア
206 キャリア連結部
207 中間連結部
208 押し出し対象領域
209 段差部
C1 軸線
M 接続相手
T チューブ
Ta 端部
W 電線
W1 芯線導体
W2 絶縁被覆
X 軸線方向(第1方向)
Y 幅方向(第2方向)
Z 高さ方向(第3方向)
1 Terminal 2 Electrical connection 3 Intermediate 4 Wire connection 5 Step 6 Offset area 7 Accommodation space 41 Base 42, 43 Barrel piece 44 Conductor crimp 45 Intermediate 46 Covered crimp 100 Wire with terminal 200 Pre-processed terminal set Body 201 Terminal component 202 Electrical connection component 203 Intermediate component 204 Wire connection component 205 Carrier 206 Carrier connection 207 Intermediate connection 208 Extrusion target area 209 Step C1 Axis M Connection partner T Tube Ta End W Wire W1 Core wire Conductor W2 Insulation coating X Axial direction (first direction)
Y width direction (second direction)
Z height direction (third direction)

Claims (1)

接続相手と電気的に接続される電気接続部、電線と電気的に接続される電線接続部、及び、前記電気接続部と前記電線接続部との間に介在し相互に連結する中間部を含む端子を構成する展開状態の端子構成部材を複数集めた加工前端子集合体において前記中間部を構成する中間部構成部位に、前記電線接続部に装着されるチューブの端部を突き当て可能な段差部を形成するプレス工程を含み、
前記加工前端子集合体は、第1方向に沿って向かい合う一対のキャリア、各前記端子構成部材において前記電線接続部を構成する電線接続部構成部位と前記キャリアとを連結するキャリア連結部、及び、前記第1方向と交差する第2方向に沿って相互に隣り合って位置する前記端子構成部材において前記電気接続部を構成する電気接続部構成部位同士を連結する中間連結部を含み、前記一対のキャリアの間に、各当該キャリアに連結されたそれぞれの前記端子構成部材が前記第2方向に沿って相互に隣り合って位置した状態で、前記電気接続部構成部位同士が前記中間連結部を介して相互に連結されており、
前記プレス工程では、前記一対のキャリア、及び、各前記電気接続部構成部位の相対位置を固定した状態で、前記キャリア連結部の伸びを許容しつつ、前記キャリア連結部から前記電線接続部構成部位を介して前記中間部構成部位に跨る押し出し対象領域を、前記電気接続部構成部位に対して、前記第1方向及び前記第2方向と交差する第3方向の一方側に押し出すことで前記中間部構成部位に前記段差部を形成することを特徴とする、
端子製造方法。
Includes an electrical connection that is electrically connected to the connection partner, a wire connection that is electrically connected to the wire, and an intermediate that is interposed between the electrical connection and the wire connection and is interconnected. A step at which the end of a tube attached to the electric wire connection portion can be abutted against an intermediate portion component portion constituting the intermediate portion in a pre-processed terminal assembly in which a plurality of unfolded terminal constituent members constituting the terminal are collected. Including the pressing process to form the part
The pre-processed terminal assembly includes a pair of carriers facing each other along a first direction, a carrier connecting portion that connects the wire connecting portion component portion constituting the wire connecting portion and the carrier in each of the terminal constituent members, and a carrier connecting portion. The pair of terminal components located adjacent to each other along a second direction intersecting with the first direction, including an intermediate connecting portion for connecting electrical connection portion components constituting the electrical connection portion. In a state where the terminal components connected to each carrier are located adjacent to each other along the second direction between the carriers, the electrical connection component components are connected to each other via the intermediate connection. Are interconnected and
In the pressing step, while the relative positions of the pair of carriers and each of the electrical connection portion constituent parts are fixed, the carrier connection portion is allowed to stretch, and the electric wire connection portion constituent portion is connected to the carrier connection portion. The intermediate portion is extruded by extruding the extruded target region straddling the intermediate portion constituent portion to one side of the first direction and the third direction intersecting the second direction with respect to the electrical connection portion constituent portion. It is characterized in that the step portion is formed in the constituent portion.
Terminal manufacturing method.
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