WO2017212883A1 - Terminal-equipped electric wire and method for producing terminal-equipped electric wire - Google Patents

Terminal-equipped electric wire and method for producing terminal-equipped electric wire Download PDF

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Publication number
WO2017212883A1
WO2017212883A1 PCT/JP2017/018478 JP2017018478W WO2017212883A1 WO 2017212883 A1 WO2017212883 A1 WO 2017212883A1 JP 2017018478 W JP2017018478 W JP 2017018478W WO 2017212883 A1 WO2017212883 A1 WO 2017212883A1
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core wire
crimping
electric wire
parallel
terminal
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PCT/JP2017/018478
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French (fr)
Japanese (ja)
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高信 嶋田
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株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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Publication of WO2017212883A1 publication Critical patent/WO2017212883A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes

Definitions

  • the electric wire with a terminal indicated in patent documents 1 is provided with an electric wire and a terminal which has a pair of conductor barrels crimped to a conductor of an electric wire.
  • the surface of the conductor barrel constituting the terminal is provided with a crimping state identification mark for determining whether the crimping degree is good or bad.
  • This mark may be a mark having a shape in which the position of the inner end of the portion exposed on the front side of the terminal changes in the terminal axis direction according to the degree of crimping of the conductor barrel, or is spaced from each other in a direction perpendicular to the terminal axis direction. And may include a plurality of marks arranged.
  • the core wire crimped between the inclined portion and the core wire receiving portion having such a configuration is not in contact with the entire area of the inclined portion, and is not in contact with the inclined portion on the lead-out side of the electric wire from a certain position.
  • this position is referred to as a contact end position.
  • This contact end position varies according to the inclination angle of the inclined portion with respect to the parallel portion.
  • the contact termination position in the inclined portion tends to be more easily arranged on the lead-out side of the wire than the crimping jig used for crimping.
  • the compressive force from the inclined portion cannot be sufficiently transmitted to the core wire, and there is a possibility that a sufficient fixing force between the electric wire and the terminal cannot be secured when a tensile force acts on the electric wire.
  • the contact termination position in the inclined portion tends to be more easily arranged on the lead-out side of the wire than the crimping jig used for crimping.
  • the contact surface 31 of the crimping jig 30 includes a parallel surface 32 that is parallel to the core wire receiving portion 25 and an inclined surface 34 that is continuous with the parallel surface 32 on the rear side (the lead-out side of the electric wire 11).
  • the core wire crimping portion 26 has a shape in which the contact surface 31 of the crimping jig 30 is transferred almost as it is. That is, the shape, formation range, inclination angle, and the like of the parallel surface 32 and the inclined surface 34 constituting the contact surface 31 of the crimping jig 30 are the shape and formation of the parallel portion 27 and the inclined portion 29 in the core crimping portion 26 described above. It is almost the same as the range and the inclination angle, and the overlapping explanation is omitted.
  • the contact end position CEP is arranged close to the rear end position of the formation range L of the inclined surface 34, so that the removal area is secured to the maximum. Note that, as the inclination angle of the inclined portion 29 decreases from 20 ° of the first embodiment, the contact end position CEP recedes and approaches the rear end position of the inclined surface 34 formation range L, but the contact end position CEP is less than the formation range L. It is considered that when the angle is further smaller than the value of the inclination angle when the rear end position is reached and approaches 10 °, the rear side of the formation range L is reached.

Abstract

A terminal-equipped electric wire 10 is equipped with at least: an electric wire 11 that has a core wire 12; a terminal fitting 20 connected to the end of the electric wire 11; a core wire receiving part 25 that receives the core wire 12 and constitutes the terminal fitting 20; a core wire crimping part 26 that crimps the core wire 12 between the core wire receiving part 25 and the core wire crimping part 26, and constitutes the terminal fitting 20; a parallel part 27 that extends in parallel to the core wire receiving part 25, and constitutes the core wire crimping part 26; and an angled part 29 which constitutes the core wire crimping part 26, is contiguous with the electric wire 11 drawing side, is angled relative to the parallel part 27 in a manner such that the distance to the core wire receiving part 25 increases in a direction away from the parallel part 27, and exhibits an angle of inclination θ relative to the parallel part 27 in the range of 10°<θ<30°.

Description

端子付き電線及び端子付き電線の製造方法Electric wire with terminal and manufacturing method of electric wire with terminal
　本明細書に開示される技術は、端子付き電線及び端子付き電線の製造方法に関する。 The technology disclosed in this specification relates to a terminal-attached electric wire and a method for manufacturing a terminal-attached electric wire.
　従来、端子付き電線として下記の特許文献１に記載されたものが知られている。特許文献１に記載された端子付き電線は、電線と、電線の導体に圧着される一対の導体バレルを有する端子と、を備える。端子を構成する導体バレルの表面には、その圧着度合いの良否を判定するための圧着状態識別標識が設けられる。この標識は、導体バレルの圧着度合いに応じて端子表側に露出する部分の内側端の位置が端子軸方向に変化する形状を有するマークでもよいし、端子軸方向と直交する方向に互いに間隔をおいて配列される複数のマークを含むものでもよい。 Conventionally, what was described in the following patent document 1 as an electric wire with a terminal is known. The electric wire with a terminal indicated in patent documents 1 is provided with an electric wire and a terminal which has a pair of conductor barrels crimped to a conductor of an electric wire. The surface of the conductor barrel constituting the terminal is provided with a crimping state identification mark for determining whether the crimping degree is good or bad. This mark may be a mark having a shape in which the position of the inner end of the portion exposed on the front side of the terminal changes in the terminal axis direction according to the degree of crimping of the conductor barrel, or is spaced from each other in a direction perpendicular to the terminal axis direction. And may include a plurality of marks arranged.
特開２００９－２７２１４１号公報JP 2009-272141 A
　上記した特許文献１に記載されたような端子付き電線では、導体バレルから電線の導体に対して付与される圧縮力が十分に伝達されなくなると、電線に引っ張り力が作用した場合における電線と端子との間の固着力を十分に確保できなくなるおそれがある。そうなると、電線が切れる、などの不具合が生じるおそれがあった。 In the electric wire with a terminal as described in Patent Document 1 described above, when the compressive force applied to the conductor of the electric wire is not sufficiently transmitted from the conductor barrel, the electric wire and the terminal when a tensile force acts on the electric wire. There is a risk that it will not be possible to secure a sufficient fixing force between the two. In such a case, there is a possibility that a problem such as disconnection of the electric wire may occur.
　本明細書に開示される技術は上記のような事情に基づいて完成されたものであって、十分な固着力を得ることを目的とする。 The technology disclosed in this specification has been completed based on the above circumstances, and aims to obtain a sufficient fixing force.
　本明細書に開示される技術の端子付き電線は、芯線を有する電線と、前記電線の端末に接続される端子と、前記端子を構成し、前記芯線を受ける芯線受け部と、前記端子を構成し、前記芯線受け部との間で前記芯線を圧着する芯線圧着部と、前記芯線圧着部を構成し、前記芯線受け部に並行する並行部と、前記芯線圧着部を構成し、前記並行部に対して前記電線の導出側に連なって前記並行部から離れるほど前記芯線受け部との間の距離が大きくなるよう傾斜した傾斜部であって、前記並行部に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲とされる傾斜部と、を少なくとも備える。 The electric wire with a terminal of the technology disclosed in the present specification includes an electric wire having a core wire, a terminal connected to a terminal of the electric wire, the core, a core wire receiving portion that receives the core wire, and the terminal. The core wire crimping portion for crimping the core wire with the core wire receiving portion; the core wire crimping portion; the parallel portion parallel to the core wire receiving portion; the core wire crimping portion; In contrast, the inclined portion is inclined so that the distance from the core wire receiving portion increases as the distance from the parallel portion continues to the lead-out side of the electric wire, and the inclination angle θ formed with respect to the parallel portion is “ And at least an inclined portion in a range of 10 ° <θ <30 °.
　電線の端末に端子を接続するに際しては、例えば、端子を構成する芯線受け部に電線の芯線を配置した状態で圧着治具を用いて芯線圧着部をかしめ付ける。芯線圧着部は、芯線受け部に並行する並行部と、並行部に対して電線の導出側に連なる傾斜部と、を少なくとも備えており、この傾斜部は、並行部から離れるほど芯線受け部との間の距離が大きくなるよう傾斜している。このような構成の傾斜部と芯線受け部との間で圧着された芯線は、傾斜部の全域に対して接触することがなく、ある位置よりも電線の導出側では傾斜部とは非接触となっており、以下ではこの位置を接触終端位置とする。この接触終端位置は、並行部に対する傾斜部の傾斜角度に応じて変動するものとされる。 When connecting the terminal to the end of the electric wire, for example, the core wire crimping portion is caulked using a crimping jig in a state where the core wire of the electric wire is arranged on the core wire receiving portion constituting the terminal. The core wire crimping portion includes at least a parallel portion that is parallel to the core wire receiving portion, and an inclined portion that is connected to the lead-out side of the electric wire with respect to the parallel portion, and the inclined portion is separated from the parallel portion with the core wire receiving portion. Inclined so that the distance between them becomes larger. The core wire crimped between the inclined portion and the core wire receiving portion having such a configuration is not in contact with the entire area of the inclined portion, and is not in contact with the inclined portion on the lead-out side of the electric wire from a certain position. Hereinafter, this position is referred to as a contact end position. This contact end position varies according to the inclination angle of the inclined portion with respect to the parallel portion.
　ここで、仮に並行部に対する傾斜部の傾斜角度が１０°以下になると、傾斜部における接触終端位置が、圧着に際して用いられる圧着治具よりも電線の導出側の配置となり易い傾向にある。そのような配置になると、傾斜部からの圧縮力を芯線に十分に伝達できず、電線に引っ張り力が作用した場合における電線と端子との間の固着力を十分に確保できなくなるおそれがある。その一方で、仮に並行部に対する傾斜部の傾斜角度が３０°以上になると、傾斜部における接触終端位置が、圧着に際して用いられる圧着治具と重畳する配置とはなるものの、圧着時に傾斜部に芯線が追従し難くなることから、接触終端位置が並行部と傾斜部との境界位置に近い配置となる。このため、傾斜部から芯線に付与される圧縮力が十分に得られなくなり、電線に引っ張り力が作用した場合における電線と端子との間の固着力を十分に確保できなくなるおそれがある。 Here, if the inclination angle of the inclined portion with respect to the parallel portion is 10 ° or less, the contact termination position in the inclined portion tends to be more easily arranged on the lead-out side of the wire than the crimping jig used for crimping. In such an arrangement, the compressive force from the inclined portion cannot be sufficiently transmitted to the core wire, and there is a possibility that a sufficient fixing force between the electric wire and the terminal cannot be secured when a tensile force acts on the electric wire. On the other hand, if the inclination angle of the inclined portion with respect to the parallel portion is 30 ° or more, the contact terminal position in the inclined portion is arranged so as to overlap with the crimping jig used for crimping, but the core wire is attached to the inclined portion during crimping. Since it becomes difficult to follow, arrangement | positioning close | similar to the boundary position of a parallel part and an inclination part becomes a contact terminal position. For this reason, the compressive force applied to the core wire from the inclined portion cannot be sufficiently obtained, and there is a possibility that a sufficient fixing force between the electric wire and the terminal cannot be ensured when a tensile force acts on the electric wire.
　その点、傾斜部は、並行部に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲とされているので、傾斜部における接触終端位置が圧着に際して用いられる圧着治具と重畳する配置になり、且つ接触終端位置が並行部と傾斜部との境界位置から十分な距離を空けた配置となることから、傾斜部から芯線に付与される圧縮力が十分なものとなる。これにより、電線に引っ張り力が作用した場合における電線と端子との間の固着力を十分に確保することができる。 In that respect, since the inclination angle θ of the inclined portion with respect to the parallel portion is in a range of “10 ° <θ <30 °”, the contact end position in the inclined portion overlaps with the crimping jig used for crimping. Since the contact end position is a sufficient distance from the boundary position between the parallel portion and the inclined portion, the compressive force applied to the core wire from the inclined portion is sufficient. Thereby, the adhering force between the electric wire and the terminal when a tensile force acts on the electric wire can be sufficiently ensured.
　本明細書に開示される技術の実施態様として、次の構成が好ましい。
（１）前記傾斜部は、前記並行部との並び方向についての長さ寸法Ｌが「０．２ｍｍ＜Ｌ≦１．２ｍｍ」の範囲とされる。仮に傾斜部の上記長さ寸法Ｌが０．２ｍｍ以下とされる場合には、並行部と傾斜部との境界位置から傾斜部における接触終端位置までの距離が十分に確保されなくなるため、電線に引っ張り力が作用した場合における電線と端子との間の固着力が不十分となって断線が生じ易くなる。その一方、傾斜部の上記長さ寸法Ｌが１．２ｍｍ以上とされる場合には、芯線圧着部に占める傾斜部の長さ比率が大きくなるのに伴って並行部の長さ比率が小さくなり過ぎるため、芯線に対する接続信頼性が低下するおそれがある。その点、傾斜部の上記長さ寸法Ｌが「０．２ｍｍ＜Ｌ≦１．２ｍｍ」の範囲とされることで、並行部と傾斜部との境界位置から傾斜部における接触終端位置までの距離が十分に確保されて電線に引っ張り力が作用した場合における電線と端子との間の固着力が十分に得られるとともに、芯線圧着部に占める並行部の長さ比率が十分に確保されて芯線に対する接続信頼性が十分に高いものとなる。 As an embodiment of the technique disclosed in this specification, the following configuration is preferable.
(1) The said inclination part shall be the range whose length dimension L about the arrangement direction with the said parallel part is "0.2 mm <L <= 1.2mm". If the length L of the inclined portion is 0.2 mm or less, a sufficient distance from the boundary position between the parallel portion and the inclined portion to the contact end position in the inclined portion cannot be secured. When the tensile force is applied, the fixing force between the electric wire and the terminal is insufficient, and disconnection is likely to occur. On the other hand, when the length L of the inclined portion is 1.2 mm or more, the length ratio of the parallel portion decreases as the length ratio of the inclined portion in the core wire crimping portion increases. Therefore, the connection reliability with respect to the core wire may be reduced. In that respect, the distance L from the boundary position between the parallel portion and the inclined portion to the contact end position in the inclined portion by setting the length L of the inclined portion in the range of “0.2 mm <L ≦ 1.2 mm”. Is sufficiently secured and a sufficient fixing force is obtained between the wire and the terminal when a pulling force acts on the wire, and the length ratio of the parallel portion in the core wire crimping portion is sufficiently secured to the core wire. Connection reliability is sufficiently high.
（２）前記傾斜部は、前記並び方向についての長さ寸法Ｌが「０．８ｍｍ≦Ｌ≦１．２ｍｍ」の範囲とされる。まず、電線に引っ張り力が作用した場合における電線と端子との間の固着力は、一定の範囲において上記長さ寸法Ｌに比例するような関係にある。ここで、例えば、傾斜部の上記長さ寸法Ｌを０．４ｍｍ、０．６ｍｍ、０．８ｍｍとしたもの同士を比較すると、電線に引っ張り力が作用した場合における電線と端子との間の固着力に関しては、０．８ｍｍとしたものと０．６ｍｍとしたものとの差が、０．６ｍｍとしたものと０．４ｍｍとしたものとの差よりも格段に大きくなる。従って、傾斜部の上記長さ寸法Ｌが「０．８ｍｍ≦Ｌ≦１．２ｍｍ」の範囲とされることで、電線に引っ張り力が作用した場合における電線と端子との間の固着力がより高いものとなる。 (2) The inclined portion has a length dimension L in the arrangement direction of “0.8 mm ≦ L ≦ 1.2 mm”. First, when a tensile force acts on the electric wire, the adhering force between the electric wire and the terminal is in a relationship proportional to the length L in a certain range. Here, for example, when the length L of the inclined portion is set to 0.4 mm, 0.6 mm, and 0.8 mm, the tension between the wire and the terminal when a tensile force acts on the wire is compared. Regarding the adhesion force, the difference between 0.8 mm and 0.6 mm is much larger than the difference between 0.6 mm and 0.4 mm. Therefore, when the length L of the inclined portion is in the range of “0.8 mm ≦ L ≦ 1.2 mm”, the fixing force between the wire and the terminal when a tensile force acts on the wire is further increased. It will be expensive.
（３）前記傾斜部は、前記並び方向についての長さ寸法Ｌが「Ｌ＝１．２ｍｍ」とされる。このようにすれば、電線に引っ張り力が作用した場合における電線と端子との間の固着力が最大限近く高いものとなる。しかも、電線に引っ張り力が作用した場合に、断線に至るまでに電線に生じる変位率が最大限近く大きなものとなるから、接続信頼性がより高いものとなっている。 (3) The inclined portion has a length dimension L in the arrangement direction of “L = 1.2 mm”. In this way, when the tensile force acts on the electric wire, the fixing force between the electric wire and the terminal is nearly as high as possible. In addition, when a pulling force is applied to the electric wire, the displacement rate that occurs in the electric wire before disconnection becomes nearly as large as possible, so that the connection reliability is higher.
（４）前記電線は、前記芯線がアルミニウムまたはアルミニウム合金からなる。このようにすれば、芯線がアルミニウムまたはアルミニウム合金からなる場合、芯線の表面には強固な酸化膜が形成される。このため、芯線と芯線圧着部との電気的な接続を確実にするには、芯線圧着部を芯線に対して高圧縮状態で圧着することが求められることから、芯線に断線が生じ易くなる傾向とされる。本明細書に開示された技術は、このような構成の端子付き電線において特に有効である。 (4) As for the said electric wire, the said core wire consists of aluminum or aluminum alloy. In this way, when the core wire is made of aluminum or an aluminum alloy, a strong oxide film is formed on the surface of the core wire. For this reason, in order to ensure electrical connection between the core wire and the core wire crimping portion, the core wire crimping portion is required to be crimped to the core wire in a highly compressed state, and therefore the core wire is likely to be disconnected. It is said. The technique disclosed in this specification is particularly effective in the electric wire with a terminal having such a configuration.
　次に、本明細書に開示される技術の端子付き電線の製造方法は、端子における芯線受け部に対して電線の芯線を配置する芯線配置工程と、圧着治具を用いて芯線圧着部をかしめ付けて前記芯線受け部との間で前記芯線を圧着する圧着工程であって、前記圧着治具として、前記芯線圧着部に接触する接触面が、前記芯線受け部に並行する並行面と、前記並行面に対して前記電線の導出側に連なって前記並行面から離れるほど前記芯線受け部との間の距離が大きくなるよう傾斜した傾斜面であって、前記並行面に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲となる傾斜面と、を有するものを用いる圧着工程と、を少なくとも備える。 Next, in the method for manufacturing a terminal-attached electric wire disclosed in the present specification, the core wire crimping portion is crimped using a core wire arranging step of arranging the core wire of the electric wire with respect to the core wire receiving portion of the terminal and a crimping jig. A crimping step of crimping the core wire between the core wire receiving portion, and as the crimping jig, a contact surface that contacts the core wire crimping portion is parallel to the core wire receiving portion; and An inclined surface that is inclined such that the distance from the parallel surface to the lead-out side of the electric wire and the distance from the core wire receiving portion increases as the distance from the parallel surface increases. At least a pressure-bonding step using a sloped surface having a range of “10 ° <θ <30 °”.
　芯線配置工程にて端子における芯線受け部に対して電線の芯線を配置したら、続いて圧着工程を行う。圧着工程では、圧着治具を用いて芯線圧着部をかしめ付けるようにしており、それにより芯線は、芯線受け部と芯線圧着部との間で圧着される。圧着工程にて用いられる圧着治具は、芯線圧着部に接触する接触面が、芯線受け部に並行する並行面と、並行面に対して電線の導出側に連なる傾斜面と、を有しており、この傾斜面は、並行面から離れるほど芯線受け部との間の距離が大きくなるよう傾斜している。このような構成の圧着治具によってかしめ付けられた芯線圧着部は、圧着治具の接触面が転写された形状となる。つまり、芯線圧着部は、芯線受け部に並行する並行部と、並行部に対して電線の導出側に連なり、並行部から離れるほど芯線受け部との間の距離が大きくなるよう傾斜する傾斜部と、を少なくとも備えることになる。芯線圧着部における傾斜部と芯線受け部との間に圧着された芯線は、傾斜部の全域に対して接触することがなく、ある位置よりも電線の導出側では傾斜部とは非接触となっており、以下ではこの位置を接触終端位置とする。この接触終端位置は、並行部に対する傾斜部の傾斜角度に応じて変動し得るものとされる。 When the core wire of the electric wire is arranged with respect to the core wire receiving portion in the terminal in the core wire arranging step, the crimping step is subsequently performed. In the crimping step, the core wire crimping portion is crimped using a crimping jig, whereby the core wire is crimped between the core wire receiving portion and the core wire crimping portion. The crimping jig used in the crimping process has a parallel surface that is in contact with the core wire crimping portion and a parallel surface that is parallel to the core wire receiving portion, and an inclined surface that is continuous to the lead-out side of the electric wire with respect to the parallel surface. The inclined surface is inclined so that the distance from the core wire receiving portion increases as the distance from the parallel surface increases. The core wire crimping portion caulked by the crimping jig having such a configuration has a shape in which the contact surface of the crimping jig is transferred. That is, the core wire crimping portion is connected to the parallel portion parallel to the core wire receiving portion, and the inclined portion that is connected to the lead-out side of the electric wire with respect to the parallel portion and is inclined so that the distance from the core wire receiving portion increases as the distance from the parallel portion increases. And at least. The core wire crimped between the inclined portion and the core wire receiving portion in the core wire crimping portion does not contact the entire area of the inclined portion, and is not in contact with the inclined portion on the lead-out side of the wire from a certain position. Hereinafter, this position is referred to as a contact end position. This contact end position can be changed according to the inclination angle of the inclined portion with respect to the parallel portion.
　ここで、仮に並行部に対する傾斜部の傾斜角度が１０°以下になると、傾斜部における接触終端位置が、圧着に際して用いられる圧着治具よりも電線の導出側の配置となり易い傾向にある。そのような配置になると、傾斜部から芯線に付与される圧縮力を一定になるよう制御するのが困難となるため、同圧縮力が十分に得られなくなるおそれがある。このため、電線に引っ張り力が作用した場合における電線と端子との間の固着力を十分に確保できなくなるおそれがあった。その一方で、仮に並行部に対する傾斜部の傾斜角度が３０°以上になると、傾斜部における接触終端位置が、圧着に際して用いられる圧着治具と重畳する配置とはなるものの、圧着に伴う傾斜部の変形に芯線が追従し難くなるため、傾斜部から芯線に付与される圧縮力が十分に得られなくなり、電線に引っ張り力が作用した場合における電線と端子との間の固着力を十分に確保できなくなるおそれがある。 Here, if the inclination angle of the inclined portion with respect to the parallel portion is 10 ° or less, the contact termination position in the inclined portion tends to be more easily arranged on the lead-out side of the wire than the crimping jig used for crimping. In such an arrangement, it becomes difficult to control the compression force applied from the inclined portion to the core wire to be constant, and thus the compression force may not be sufficiently obtained. For this reason, there is a possibility that a sufficient fixing force between the electric wire and the terminal cannot be secured when a tensile force acts on the electric wire. On the other hand, if the inclination angle of the inclined portion with respect to the parallel portion is 30 ° or more, the contact termination position in the inclined portion is arranged so as to overlap with the pressure bonding jig used for pressure bonding, Since it becomes difficult for the core wire to follow the deformation, the compression force applied to the core wire from the inclined portion cannot be obtained sufficiently, and a sufficient fixing force between the wire and the terminal when a tensile force acts on the wire can be secured. There is a risk of disappearing.
　その点、芯線圧着部には、圧着治具において並行面に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲とされる傾斜面を有する接触面が転写されることで、傾斜部は、並行部に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲とされる。従って、傾斜部における接触終端位置が、圧着に際して用いられる圧着治具と重畳する配置になるのに加えて、傾斜部から芯線に付与される圧縮力が十分に得られる。これにより、電線に引っ張り力が作用した場合における電線と端子との間の固着力を十分に確保することができる。 In that respect, the contact surface having an inclined surface in which the inclination angle θ formed with respect to the parallel surface in the crimping jig is in the range of “10 ° <θ <30 °” is transferred to the core wire crimping portion, The inclined portion has an inclination angle θ formed with respect to the parallel portion in a range of “10 ° <θ <30 °”. Therefore, in addition to the arrangement in which the contact end position in the inclined portion overlaps with the crimping jig used for crimping, a sufficient compressive force is applied to the core wire from the inclined portion. Thereby, the adhering force between the electric wire and the terminal when a tensile force acts on the electric wire can be sufficiently ensured.
　本明細書に開示される技術によれば、十分な固着力を得ることができる。 According to the technique disclosed in this specification, a sufficient fixing force can be obtained.
実施形態１に係る端子付き電線の側面図The side view of the electric wire with a terminal concerning Embodiment 1 ワイヤバレル部及び芯線の断面図Cross section of wire barrel and core wire 端子付き電線の製造に用いられる圧着治具の側面図Side view of crimping jig used for manufacturing electric wires with terminals 比較実験１の比較例１に係る傾斜部の傾斜角度が１０°とされたワイヤバレル部を圧着治具によりかしめ付けた状態を示す断面図Sectional drawing which shows the state which crimped the wire barrel part by which the inclination angle of the inclination part which concerns on the comparative example 1 of the comparative experiment 1 was 10 degrees with the crimping jig 比較実験１の比較例２に係る傾斜部の傾斜角度が３０°とされたワイヤバレル部を圧着治具によりかしめ付けた状態を示す断面図Sectional drawing which shows the state which crimped the wire barrel part by which the inclination angle of the inclination part which concerns on the comparative example 2 of the comparative experiment 1 was 30 degrees with the crimping | compression-bonding jig 比較実験１の実施例１に係る傾斜部の傾斜角度が２０°とされたワイヤバレル部を圧着治具によりかしめ付けた状態を示す断面図Sectional drawing which shows the state which crimped the wire barrel part by which the inclination angle of the inclination part which concerns on Example 1 of the comparative experiment 1 was 20 degrees with the crimping jig 比較実験２の実施例１及び比較例１，２に係る傾斜部の長さ寸法と除変面積との関係を表すグラフThe graph showing the relationship between the length dimension of the inclination part which concerns on Example 1 of the comparative experiment 2, and the comparative examples 1 and 2, and a change area 比較実験２の実施例１及び比較例１，２に係る傾斜部の長さ寸法と固着力との関係を表すグラフThe graph showing the relationship between the length dimension of the inclined part and the fixing force according to Example 1 and Comparative Examples 1 and 2 of Comparative Experiment 2 比較実験３に係る電線の変位率と相対強度との関係を表すグラフThe graph showing the relationship between the displacement rate and relative strength of the electric wire which concerns on the comparative experiment 3
　＜実施形態１＞
　実施形態１を図１から図９によって説明する。本実施形態では、電線１１の端末に雌型の端子金具（端子）２０を接続してなる端子付き電線１０について例示する。なお、各図面の一部にはＸ軸及びＺ軸を示しており、各軸方向が各図面で示した方向となるように描かれている。各図面の一部では図示を省略しているが、Ｙ軸方向は、Ｘ軸方向及びＺ軸方向の双方と直交する方向である。また、前後方向については、Ｘ軸方向に沿い且つ各図に示す左側を前方、右側を後方とする。 <Embodiment 1>
The first embodiment will be described with reference to FIGS. In this embodiment, the terminal-attached electric wire 10 formed by connecting a female terminal fitting (terminal) 20 to the end of the electric wire 11 is illustrated. In addition, a part of each drawing shows an X axis and a Z axis, and each axis direction is drawn to be a direction shown in each drawing. Although not shown in some drawings, the Y-axis direction is a direction orthogonal to both the X-axis direction and the Z-axis direction. As for the front-rear direction, the left side shown in each drawing along the X-axis direction is the front, and the right side is the rear.
　まず、端子付き電線１０を構成する電線１１について説明する。電線１１は、図１に示すように、金属細線（素線）を螺旋状に撚り合わせてなる芯線１２と、この芯線１２を被覆する樹脂製の絶縁被覆１３と、を有している。電線１１の端末部においては、絶縁被覆１３が剥き取られて芯線１２が露出されている。本実施形態において、芯線１２は、アルミニウム製またはアルミニウム合金製であるが、好ましくはＡｌ－Ｍｇ－Ｓｉ系合金（６０００系合金）製とされる。 First, the electric wire 11 which comprises the electric wire 10 with a terminal is demonstrated. As shown in FIG. 1, the electric wire 11 includes a core wire 12 formed by twisting metal fine wires (element wires) in a spiral shape, and a resin insulating coating 13 that covers the core wire 12. In the terminal portion of the electric wire 11, the insulating coating 13 is stripped and the core wire 12 is exposed. In the present embodiment, the core wire 12 is made of aluminum or an aluminum alloy, but is preferably made of an Al—Mg—Si alloy (6000 alloy).
　端子金具２０は、金属板材を打ち抜き加工および曲げ加工して製造された部材である。端子金具２０の材料となる金属板材としては、例えば、銅または銅合金製であって表面にスズめっきが施されている板材を用いることができる。 The terminal fitting 20 is a member manufactured by punching and bending a metal plate material. As a metal plate material used as the material of the terminal fitting 20, for example, a plate material made of copper or a copper alloy and tin-plated on the surface can be used.
　端子金具２０は、図１に示すように、端子本体２１と、端子本体２１の後側に連なる電線接続部２２と、から構成される。端子本体２１は、前後に開口する略筒状をなしており、前方から内部に相手の雄型の端子金具（図示せず）を受け入れて導通接続が可能とされる。電線接続部２２は、電線１１の端部において露出した芯線１２に固定されるワイヤバレル部（芯線固定部）２３と、電線１１の端部における絶縁被覆１３に固定されるインシュレーションバレル部（被覆固定部）２４と、を前後に繋げた構成とされる。 The terminal metal fitting 20 is comprised from the terminal main body 21 and the electric wire connection part 22 connected to the rear side of the terminal main body 21, as shown in FIG. The terminal main body 21 has a substantially cylindrical shape that opens in the front-rear direction, and accepts a mating male terminal fitting (not shown) from the front to the inside to enable conductive connection. The wire connection portion 22 includes a wire barrel portion (core wire fixing portion) 23 fixed to the core wire 12 exposed at the end portion of the electric wire 11 and an insulation barrel portion (covering) fixed to the insulating coating 13 at the end portion of the electric wire 11. The fixing portion 24 is connected to the front and rear.
　ワイヤバレル部２３について詳しく説明する。ワイヤバレル部２３は、図２に示すように、芯線１２を受ける芯線受け部（底板部）２５と、芯線受け部２５との間で芯線１２を圧着する芯線圧着部（かしめ片部）２６と、を有する。芯線受け部２５は、Ｘ軸方向に沿って前後に延在しており、その上に載せられた芯線１２を受けている。芯線圧着部２６は、図示しない圧着前の状態では、芯線受け部２５におけるＹ軸方向についての両側縁からそれぞれＺ軸方向に沿って立ち上がる形で一対が互いに対向する形で設けられており、圧着後の状態では、芯線受け部２５に載せられた芯線１２の外周に巻き付くとともに、先端部が芯線１２におけるＹ軸方向についての中央部に食い込む形となる。圧着された芯線１２は、芯線受け部２５と芯線圧着部２６との間に挟まれていて所定の圧縮力が付与されている。なお、図２では、芯線１２を構成する複数の金属細線に係る断面形状に関して詳しい図示を省略している。 The wire barrel portion 23 will be described in detail. As shown in FIG. 2, the wire barrel portion 23 includes a core wire receiving portion (bottom plate portion) 25 that receives the core wire 12, and a core wire crimping portion (caulking piece portion) 26 that crimps the core wire 12 between the core wire receiving portion 25. Have. The core wire receiving portion 25 extends back and forth along the X-axis direction, and receives the core wire 12 placed thereon. In a state before crimping (not shown), the core wire crimping portion 26 is provided in such a manner that a pair of the core wire receiving portion 25 is opposed to each other in such a manner as to rise from both side edges in the Y-axis direction along the Z-axis direction. In the later state, the core wire 12 is wound around the outer periphery of the core wire 12 placed on the core wire receiving portion 25, and the tip portion bites into the central portion of the core wire 12 in the Y-axis direction. The crimped core wire 12 is sandwiched between the core wire receiving portion 25 and the core wire crimping portion 26 and given a predetermined compressive force. In addition, in FIG. 2, detailed illustration regarding the cross-sectional shape which concerns on the some metal fine wire which comprises the core wire 12 is abbreviate | omitted.
　各芯線圧着部２６は、図２に示すように、芯線受け部２５に対して芯線１２を挟んで対向状をなす部分（芯線押さえ部）が、芯線受け部２５に並行する並行部２７と、並行部２７に対して後側（電線１１の導出側）に連なる傾斜部２９と、から構成されている。並行部２７は、芯線圧着部２６のうち、Ｘ軸方向についての中央部分を構成しており、Ｘ軸方向（芯線圧着部２６と傾斜部２９との並び方向）についての長さ寸法が傾斜部２９よりも大きくなっている。言い換えると、並行部２７は、芯線圧着部２６に占める長さ寸法の比率が最大となっている。 As shown in FIG. 2, each core wire crimping portion 26 includes a parallel portion 27 in which a portion (core wire pressing portion) that is opposed to the core wire receiving portion 25 with the core wire 12 interposed therebetween is parallel to the core wire receiving portion 25. It is comprised from the inclination part 29 connected with the rear side (electric wire 11 extraction side) with respect to the parallel part 27. FIG. The parallel portion 27 constitutes a central portion in the X-axis direction of the core wire crimping portion 26, and the length dimension in the X-axis direction (alignment direction of the core wire crimping portion 26 and the inclined portion 29) is an inclined portion. It is larger than 29. In other words, the parallel portion 27 has the largest ratio of the length dimension to the core wire crimping portion 26.
　傾斜部２９は、図２に示すように、それぞれ並行部２７からＸ軸方向に沿って離れるほど芯線受け部２５との間に距離が大きくなるよう並行部２７に対して傾斜状をなしている。傾斜部２９は、芯線圧着部２６のうち、Ｘ軸方向についての後側の端側部分を構成しており、Ｘ軸方向についての長さ寸法が並行部２７よりも小さくなっている。傾斜部２９は、並行部２７に対して前傾している。このように、芯線圧着部２６は、概ね前後非対称形状とされている。 As shown in FIG. 2, the inclined portion 29 is inclined with respect to the parallel portion 27 so that the distance between the inclined portion 29 and the core wire receiving portion 25 increases with distance from the parallel portion 27 along the X-axis direction. . The inclined portion 29 constitutes a rear end portion in the X-axis direction of the core wire crimping portion 26, and the length dimension in the X-axis direction is smaller than that of the parallel portion 27. The inclined portion 29 is inclined forward with respect to the parallel portion 27. Thus, the core wire crimping portion 26 has a generally front-rear asymmetric shape.
　上記のような構成の芯線圧着部２６は、製造過程において、図３に示される構成の圧着治具（クリンパ）３０を用いて芯線１２に対して圧着されている。圧着治具３０は、金属製とされており、端子金具２０が載置される図示しない基台（アンビル）に対してＺ軸方向について対向状をなす形で配され、基台との間でワイヤバレル部２３を挟み込んで圧縮し、芯線圧着部２６を変形させて芯線１２に対する圧着を図るものである。圧着治具３０は、圧着に際して、ワイヤバレル部２３を構成する芯線圧着部２６（芯線押さえ部）に接触する接触面３１を有している。圧着治具３０の接触面３１は、芯線受け部２５に並行する並行面３２と、並行面３２に対して後側（電線１１の導出側）に連なる傾斜面３４と、から構成されている。そして、芯線圧着部２６は、圧着に伴って圧着治具３０の接触面３１がほぼそのまま転写された形状となる。つまり、圧着治具３０の接触面３１を構成する並行面３２及び傾斜面３４の形状、形成範囲及び傾斜角度などは、既述した芯線圧着部２６における並行部２７及び傾斜部２９の形状、形成範囲及び傾斜角度などとほぼ同一となっており、重複する説明は割愛する。 The core wire crimping portion 26 configured as described above is crimped to the core wire 12 using a crimping jig (crimper) 30 configured as shown in FIG. 3 in the manufacturing process. The crimping jig 30 is made of metal, and is arranged in a shape opposing the Z-axis direction with respect to a base (anvil) (not shown) on which the terminal fitting 20 is placed. The wire barrel portion 23 is sandwiched and compressed, and the core wire crimping portion 26 is deformed so as to crimp the core wire 12. The crimping jig 30 has a contact surface 31 that comes into contact with the core wire crimping portion 26 (core wire pressing portion) constituting the wire barrel portion 23 during crimping. The contact surface 31 of the crimping jig 30 includes a parallel surface 32 that is parallel to the core wire receiving portion 25 and an inclined surface 34 that is continuous with the parallel surface 32 on the rear side (the lead-out side of the electric wire 11). The core wire crimping portion 26 has a shape in which the contact surface 31 of the crimping jig 30 is transferred almost as it is. That is, the shape, formation range, inclination angle, and the like of the parallel surface 32 and the inclined surface 34 constituting the contact surface 31 of the crimping jig 30 are the shape and formation of the parallel portion 27 and the inclined portion 29 in the core crimping portion 26 described above. It is almost the same as the range and the inclination angle, and the overlapping explanation is omitted.
　ところで、傾斜部２９と芯線受け部２５との間で圧着された芯線１２は、図２に示すように、傾斜部２９の全域に対して接触することがなく、ある位置よりも後側（電線１１の導出側）では傾斜部２９とは非接触となっており、以下ではこの位置を接触終端位置ＣＥＰとする。この接触終端位置ＣＥＰは、並行部２７に対する傾斜部２９の傾斜角度に応じて変動するものとされる。そして、接触終端位置ＣＥＰに応じて傾斜部２９から芯線１２に作用する圧縮力も変動するものとされる。 By the way, the core wire 12 crimped between the inclined portion 29 and the core wire receiving portion 25 does not contact the entire area of the inclined portion 29 as shown in FIG. 11 on the lead-out side) is not in contact with the inclined portion 29, and this position is hereinafter referred to as a contact end position CEP. The contact end position CEP varies according to the inclination angle of the inclined portion 29 with respect to the parallel portion 27. And the compressive force which acts on the core wire 12 from the inclination part 29 shall also be fluctuate | varied according to the contact termination position CEP.
　本実施形態に係る傾斜部２９は、並行部２７に対してなす傾斜角度を「θ」としたとき、その傾斜角度θが「１０°＜θ＜３０°」の範囲とされている。具体的には、傾斜部２９は、傾斜角度θが「θ＝２０°」とされるのが好ましいものとされる。このような構成によれば、傾斜部２９における接触終端位置ＣＥＰが圧着に際して用いられる圧着治具３０と重畳する配置になり、且つ接触終端位置ＣＥＰが傾斜部２９の前端位置（並行部２７と傾斜部２９との境界位置、傾斜部２９の傾斜始端位置）から十分な距離を空けた配置となることから、傾斜部２９から芯線１２に付与される圧縮力が十分なものとなる。これにより、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力を十分に確保することができるのである。 In the inclined portion 29 according to the present embodiment, when the inclination angle formed with respect to the parallel portion 27 is “θ”, the inclination angle θ is in the range of “10 ° <θ <30 °”. Specifically, it is preferable that the inclined portion 29 has an inclination angle θ of “θ = 20 °”. According to such a configuration, the contact end position CEP in the inclined portion 29 is arranged so as to overlap with the crimping jig 30 used for crimping, and the contact end position CEP is the front end position of the inclined portion 29 (inclined with the parallel portion 27). Since the arrangement is made at a sufficient distance from the boundary position with the portion 29 and the inclination start end position of the inclined portion 29, the compressive force applied from the inclined portion 29 to the core wire 12 is sufficient. Thereby, the adhering force between the electric wire 11 and the terminal fitting 20 when a tensile force acts on the electric wire 11 can be sufficiently ensured.
　上記のような作用及び効果を実証するため、以下の比較実験１，２を行った。まず、比較実験１について説明する。比較実験１は、傾斜部２９の傾斜角度を変化させたときの芯線１２の圧着状態及び接触終端位置ＣＥＰなどがどのように変化するかについて知見を得るべく行われている。比較実験１では、傾斜部２９の傾斜角度を「１０°」とした場合を比較例１とし、傾斜部２９の傾斜角度を「３０°」とした場合を比較例２とし、傾斜部２９の傾斜角度を「２０°」とした場合を実施例１としており、これら実施例１及び比較例１，２に係るワイヤバレル部２３を圧着治具３０によってかしめ付けた状態の断面を撮影し、得られた写真を図４から図６に示されるように図面化した。図４が比較例１の実験結果であり、図５が比較例２の実験結果であり、図６が実施例１の実験結果である。図４から図６では、圧着治具３０の接触面３１を構成する傾斜面３４におけるＸ軸方向（並行面３２と傾斜面３４との並び方向）についての形成範囲Ｌを一点鎖線により図示している。 The following comparative experiments 1 and 2 were conducted in order to demonstrate the above-described actions and effects. First, comparative experiment 1 will be described. The comparative experiment 1 is performed in order to obtain knowledge about how the crimping state of the core wire 12 and the contact end position CEP change when the inclination angle of the inclined portion 29 is changed. In Comparative Experiment 1, the case where the inclination angle of the inclined portion 29 is “10 °” is Comparative Example 1, the case where the inclination angle of the inclined portion 29 is “30 °” is Comparative Example 2, and the inclination of the inclined portion 29 is A case where the angle is set to “20 °” is set as Example 1, and a cross section in a state in which the wire barrel portion 23 according to Example 1 and Comparative Examples 1 and 2 is caulked by the crimping jig 30 is photographed and obtained. The photographs were made as shown in FIGS. 4 shows the experimental results of Comparative Example 1, FIG. 5 shows the experimental results of Comparative Example 2, and FIG. 6 shows the experimental results of Example 1. 4 to 6, the formation range L in the X-axis direction (alignment direction of the parallel surface 32 and the inclined surface 34) in the inclined surface 34 constituting the contact surface 31 of the crimping jig 30 is illustrated by a one-dot chain line. Yes.
　さらには、図４から図６では、上記傾斜面３４の形成範囲Ｌに存在する芯線１２のうち、傾斜部２９に接触する部分で且つ傾斜部２９における芯線１２との接触面２９ａ（後述する除変領域の斜辺）と、並行部２７における芯線１２との接触面２７ａの延長線（後述する除変領域の底辺）と、に挟まれた部分を網掛け状にして図示している。この網掛け状の領域は、直角三角形となっており、その面積は、傾斜部２９の前端位置（並行部２７と傾斜部２９との境界位置）から後側に向かう（接触終端位置ＣＥＰに近づく）のに従って徐々に増加することから、以下では上記直角三角形の領域を「除変領域」と言い、その面積を「除変面積」と言う。この除変面積は、傾斜部２９の傾斜角度が大きくなるほど大きくなるとともに、傾斜面３４の形成範囲Ｌ内において接触終端位置ＣＥＰが後側の配置になるほど大きくなる傾向とされる。なお、図４から図６では、芯線１２を構成する複数の金属細線に係る断面形状に関して詳しい図示を省略している。 Further, in FIGS. 4 to 6, the core wire 12 existing in the formation range L of the inclined surface 34 is a portion that contacts the inclined portion 29 and a contact surface 29a with the core wire 12 in the inclined portion 29 (excluded later). The hatched portion of the change area and the extension line of the contact surface 27a of the parallel portion 27 with the core wire 12 (the bottom side of the change area described later) are shaded. This shaded area is a right triangle, and the area thereof is from the front end position of the inclined portion 29 (the boundary position between the parallel portion 27 and the inclined portion 29) toward the rear side (approaching the contact end position CEP). ), The area of the right triangle is referred to as a “diversion area”, and the area thereof is referred to as a “diversion area”. The removal area increases as the inclination angle of the inclined portion 29 increases, and tends to increase as the contact end position CEP is arranged on the rear side in the formation range L of the inclined surface 34. In addition, in FIG. 4 to FIG. 6, detailed illustration is omitted regarding cross-sectional shapes related to a plurality of fine metal wires constituting the core wire 12.
　比較実験１の実験結果について説明する。まず、比較例１は、図４に示すように、接触終端位置ＣＥＰが傾斜面３４の形成範囲Ｌよりも後側外部の配置（圧着治具３０とは非重畳の配置）とされている。従って、比較例１の除変領域における３つの頂点には、接触終端位置ＣＥＰが含まれておらず、比較例１の除変領域におけるＸ軸方向についての長さ寸法は、傾斜面３４の形成範囲Ｌとほぼ等しいものとされる。これにより、芯線１２は、傾斜面３４の形成範囲Ｌの全長にわたって傾斜部２９に接触しており、圧着治具３０の傾斜面３４から全域にわたって圧縮力が付与されているものの、比較例１に係る傾斜部２９の傾斜角度は１０°であるため、除変面積が十分に確保されていない。それに加えて、比較例１では、接触終端位置ＣＥＰが傾斜面３４の形成範囲Ｌよりも後側外部に配置されているため、芯線１２は、傾斜面３４の形成範囲Ｌの後側外部においても傾斜部２９に接触しているものの、当該接触箇所には圧着治具３０の傾斜面３４からの圧縮力が伝達され難いものとなっている。つまり、比較例１では、芯線圧着部２６により圧着された芯線１２に、圧着治具３０の傾斜面３４からの圧縮力が効率的に伝達され難い傾向にある、と言える。なお、傾斜部２９の傾斜角度が比較例１の１０°から小さくなるほど、接触終端位置ＣＥＰが後退する（形成範囲Ｌから遠ざかる）傾向にあると考えられ、それに伴って圧着治具３０の傾斜面３４から芯線１２に付与される圧縮力及び除変面積も減少する傾向にあると考えられる。 The experimental results of comparative experiment 1 will be described. First, in Comparative Example 1, as shown in FIG. 4, the contact end position CEP is arranged outside the rear side of the formation range L of the inclined surface 34 (arrangement that does not overlap with the crimping jig 30). Therefore, the contact end position CEP is not included in the three vertices in the change region of Comparative Example 1, and the length dimension in the X-axis direction in the change region of Comparative Example 1 is the formation of the inclined surface 34. It is assumed that it is substantially equal to the range L. As a result, the core wire 12 is in contact with the inclined portion 29 over the entire length of the formation range L of the inclined surface 34, and a compressive force is applied from the inclined surface 34 of the crimping jig 30 over the entire region. Since the inclination angle of the inclined portion 29 is 10 °, the removal area is not sufficiently secured. In addition, in the first comparative example, the contact terminal position CEP is disposed outside the rear side of the formation range L of the inclined surface 34, so that the core wire 12 is also outside the rear side of the formation range L of the inclined surface 34. Although it is in contact with the inclined portion 29, it is difficult for the compressive force from the inclined surface 34 of the crimping jig 30 to be transmitted to the contact portion. That is, in Comparative Example 1, it can be said that the compressive force from the inclined surface 34 of the crimping jig 30 tends not to be efficiently transmitted to the core wire 12 crimped by the core wire crimping portion 26. In addition, it is considered that the contact end position CEP tends to recede (descend away from the formation range L) as the inclination angle of the inclined portion 29 decreases from 10 ° of Comparative Example 1, and accordingly, the inclined surface of the crimping jig 30 is inclined. It is considered that the compressive force applied from 34 to the core wire 12 and the change area also tend to decrease.
　次に、比較例２は、図５に示すように、接触終端位置ＣＥＰが傾斜面３４の形成範囲Ｌ内の配置（圧着治具３０と重畳する配置）となるものの、接触終端位置ＣＥＰが除変領域の前端位置（並行部２７と傾斜部２９との境界位置、傾斜面３４の形成範囲Ｌの前端位置）に近い配置となる。これは、比較例２に係る傾斜部２９の傾斜角度が３０°であることに起因して、圧着治具３０によって並行部２７に対して斜めに立ち上がるよう変形される傾斜部２９に芯線１２が追従し難くなるため、と推考される。このため、比較例２では、芯線１２は、傾斜面３４の形成範囲Ｌのごく一部でしか傾斜部２９に接触されず、圧着治具３０の傾斜面３４から芯線１２に付与される圧縮力が不十分になるおそれがある。また、比較例２では、接触終端位置ＣＥＰが除変領域の前端位置に近い配置となるため、除変面積が十分に確保されないおそれがある。なお、傾斜部２９の傾斜角度が比較例２の３０°から大きくなるほど、接触終端位置ＣＥＰが前進する（除変領域の前端位置に近づく）傾向にあると考えられ、それに伴って圧着治具３０の傾斜面３４から芯線１２に付与される圧縮力及び除変面積は縮小するか変動しない傾向（少なくとも殆ど増加しない傾向）にあると考えられる。 Next, in Comparative Example 2, as shown in FIG. 5, the contact end position CEP is disposed within the formation range L of the inclined surface 34 (arrangement overlapping the crimping jig 30), but the contact end position CEP is excluded. The arrangement is close to the front end position (the boundary position between the parallel portion 27 and the inclined portion 29, the front end position of the formation range L of the inclined surface 34) of the change region. This is because the inclination angle of the inclined portion 29 according to the comparative example 2 is 30 °, and the core wire 12 is formed on the inclined portion 29 that is deformed to rise obliquely with respect to the parallel portion 27 by the crimping jig 30. It is thought that it becomes difficult to follow. For this reason, in Comparative Example 2, the core wire 12 is in contact with the inclined portion 29 only in a small part of the formation range L of the inclined surface 34, and the compressive force applied to the core wire 12 from the inclined surface 34 of the crimping jig 30. May become insufficient. Further, in Comparative Example 2, the contact end position CEP is arranged close to the front end position of the change region, and thus there is a possibility that the change area is not sufficiently secured. In addition, it is thought that the contact end position CEP tends to advance (closer to the front end position of the change-over region) as the inclination angle of the inclined portion 29 increases from 30 ° of Comparative Example 2, and accordingly, the crimping jig 30 is accompanied. It is considered that the compressive force applied from the inclined surface 34 to the core wire 12 and the change-over area tend to be reduced or not fluctuate (at least tend not to increase).
　そして、実施例１は、図６に示すように、接触終端位置ＣＥＰが傾斜面３４の形成範囲Ｌ内の配置（圧着治具３０と重畳する配置）となり、且つ接触終端位置ＣＥＰが除変領域の前端位置（並行部２７と傾斜部２９との境界位置、傾斜面３４の形成範囲Ｌの前端位置）から十分な距離を空けた配置、具体的には、傾斜面３４の形成範囲Ｌの後端位置に近く、上記距離が最大限近く確保された配置となっている。これは、実施例１に係る傾斜部２９の傾斜角度が３０°よりも小さな２０°とされているので、圧着治具３０によって並行部２７に対して斜めに立ち上がるよう変形される傾斜部２９に芯線１２が良好に追従し、傾斜面３４の形成範囲Ｌ内において傾斜部２９によって芯線１２が良好に圧縮されるため、と推考される。これにより、実施例１では、芯線１２には、傾斜面３４の形成範囲Ｌの大部分にわたって圧着治具３０からの圧縮力が最大限近く付与される。また、実施例１では、接触終端位置ＣＥＰが傾斜面３４の形成範囲Ｌの後端位置に近い配置となるため、除変面積が最大限近く確保されている。なお、傾斜部２９の傾斜角度が実施例１の２０°から小さくなるほど、接触終端位置ＣＥＰが後退して傾斜面３４の形成範囲Ｌの後端位置に近づくものの、接触終端位置ＣＥＰが形成範囲Ｌの後端位置に達したときの傾斜角度の値よりもさらに小さくなって１０°に近づくと形成範囲Ｌの後側外部に至るものと考えられる。接触終端位置ＣＥＰが形成範囲Ｌの後端位置に達したとき、圧着治具３０の傾斜面３４から芯線１２に付与される圧縮力及び除変面積が最大化されるものと考えられる。一方、傾斜部２９の傾斜角度が実施例１の２０°から大きくなるほど、接触終端位置ＣＥＰが前進して除変領域の前端位置に近づく傾向にあると考えられ、それに伴って圧着治具３０の傾斜面３４から芯線１２に付与される圧縮力及び除変面積は縮小するか変動しない傾向（少なくとも殆ど増加しない傾向）にあると考えられる。 In the first embodiment, as shown in FIG. 6, the contact end position CEP is disposed within the formation range L of the inclined surface 34 (arrangement overlapping the crimping jig 30), and the contact end position CEP is the change region. Arranged at a sufficient distance from the front end position (the boundary position between the parallel portion 27 and the inclined portion 29, the front end position of the formation range L of the inclined surface 34), specifically, after the formation range L of the inclined surface 34 Close to the end position, the above distance is secured to the maximum. This is because the inclination angle of the inclined portion 29 according to the first embodiment is 20 °, which is smaller than 30 °, so that the inclined portion 29 deformed to rise obliquely with respect to the parallel portion 27 by the crimping jig 30. It is assumed that the core wire 12 follows well and the core wire 12 is favorably compressed by the inclined portion 29 within the formation range L of the inclined surface 34. Thereby, in Example 1, the compressive force from the crimping | compression-bonding jig | tool 30 is provided to the core wire 12 over most part of the formation range L of the inclined surface 34 to the maximum. In the first embodiment, the contact end position CEP is arranged close to the rear end position of the formation range L of the inclined surface 34, so that the removal area is secured to the maximum. Note that, as the inclination angle of the inclined portion 29 decreases from 20 ° of the first embodiment, the contact end position CEP recedes and approaches the rear end position of the inclined surface 34 formation range L, but the contact end position CEP is less than the formation range L. It is considered that when the angle is further smaller than the value of the inclination angle when the rear end position is reached and approaches 10 °, the rear side of the formation range L is reached. When the contact end position CEP reaches the rear end position of the formation range L, it is considered that the compressive force and change area applied to the core wire 12 from the inclined surface 34 of the crimping jig 30 are maximized. On the other hand, it is considered that the contact end position CEP tends to advance and approach the front end position of the change-over region as the inclination angle of the inclined portion 29 increases from 20 ° in the first embodiment. It is considered that the compressive force applied from the inclined surface 34 to the core wire 12 and the change-over area tend to decrease or not fluctuate (at least tend to hardly increase).
　続いて、比較実験２について説明する。比較実験２は、上記した比較実験１と同じ実施例１及び比較例１，２についてそれぞれ圧着治具３０の傾斜面３４の形成範囲Ｌ（傾斜部２９におけるＸ軸方向（並行部２７と傾斜部２９との並び方向）についての長さ寸法Ｌ）を０．８ｍｍ～１．２ｍｍの範囲で変化させたときに、除変面積及び固着力がどのように変化するかについて知見を得るべく行われている。比較実験２の実験結果は、傾斜面３４の形成範囲Ｌと除変面積との関係が図７に、傾斜面３４の形成範囲Ｌと固着力との関係が図８に、それぞれ示されている。図７は、横軸を傾斜面３４の形成範囲Ｌ（単位は「ｍｍ」）とし、縦軸を除変面積（単位は「ｍｍ２」）としたグラフである。図８は、横軸を、傾斜面３４の形成範囲Ｌ（単位は「ｍｍ」）とし、縦軸を、電線１１に引っ張り力を作用させて電線１１が断線に至るまでに要した力である固着力（無単位）としたグラフである。 Subsequently, Comparative Experiment 2 will be described. Comparative experiment 2 is the same as Example 1 and Comparative Examples 1 and 2 described above, but the formation range L of the inclined surface 34 of the crimping jig 30 (X-axis direction in the inclined portion 29 (parallel portion 27 and inclined portion)). This is done in order to obtain knowledge about how the area to be changed and the fixing force change when the length dimension L) is changed in the range of 0.8 mm to 1.2 mm. ing. The experimental results of Comparative Experiment 2 show the relationship between the formation range L of the inclined surface 34 and the removal area, and FIG. 8 shows the relationship between the formation range L of the inclined surface 34 and the fixing force. . FIG. 7 is a graph in which the horizontal axis represents the formation range L (unit: “mm”) of the inclined surface 34 and the vertical axis represents the change area (unit: “mm 2 ”). In FIG. 8, the horizontal axis is the formation range L (unit: “mm”) of the inclined surface 34, and the vertical axis is the force required until the electric wire 11 is broken by applying a pulling force to the electric wire 11. It is the graph which made the sticking force (unitless).
　比較実験２の実験結果について説明する。図７及び図８の各グラフによれば、比較例１は、傾斜面３４の形成範囲Ｌに対して、除変面積及び固着力がほぼ比例する傾向にあるものの、その変化率は最も小さなものとされる。比較例２は、傾斜面３４の形成範囲Ｌが０．８ｍｍまでは、除変面積及び固着力の変化率が比較例１より大きいものの、０．８ｍｍより大きくなると、除変面積及び固着力の変化率がほぼ０となって飽和する傾向にある。そして、実施例１は、少なくとも傾斜面３４の形成範囲Ｌが少なくとも１．０ｍｍまでは、除変面積及び固着力の変化率が比較例１，２よりも大きくなっていて除変面積及び固着力が最大となっており、１．０ｍｍより大きくなると除変面積及び固着力の変化率がほぼ０となって飽和する傾向にある。従って、実施例１のように傾斜部２９の傾斜角度を２０°とした上で、傾斜面３４の形成範囲Ｌを１．０ｍｍ～１．２ｍｍの範囲とすれば、除変面積及び固着力が共に十分に得られる、と言える。なお、図７及び図８の各グラフから、除変面積及び固着力は、傾斜面３４の形成範囲Ｌの増減に伴って概ね同様に変動する傾向である、と言える。つまり、除変面積が大きくなるほど、固着力も大きなものとなる傾向にあり、その点では、実施例１のように傾斜部２９の傾斜角度を２０°として除変面積を大きく確保すれば、大きな固着力が得られる、と言える。 The experimental results of comparative experiment 2 will be described. According to the graphs of FIGS. 7 and 8, in Comparative Example 1, the change area and the fixing force tend to be approximately proportional to the formation range L of the inclined surface 34, but the rate of change is the smallest. It is said. In Comparative Example 2, the rate of change of the removal area and the fixing force is larger than that of Comparative Example 1 until the formation range L of the inclined surface 34 is 0.8 mm. The rate of change tends to be almost zero and becomes saturated. In Example 1, the change area and the rate of change of the fixing force are larger than those of Comparative Examples 1 and 2 at least until the formation range L of the inclined surface 34 is at least 1.0 mm. Is larger than 1.0 mm, and the rate of change of the removal area and the fixing force tends to be almost zero and become saturated. Therefore, if the slope L of the sloped portion 29 is set to 20 ° as in the first embodiment and the formation range L of the sloped surface 34 is set to a range of 1.0 mm to 1.2 mm, the removal area and the fixing force are increased. Both can be said to be sufficient. 7 and FIG. 8, it can be said that the removal area and the fixing force tend to vary in a similar manner as the formation range L of the inclined surface 34 increases and decreases. In other words, the larger the change area, the larger the fixing force tends to be. In this respect, if the change area is ensured to be large by setting the inclination angle of the inclined portion 29 to 20 ° as in the first embodiment, the change area becomes large. It can be said that a fixing force can be obtained.
　次に、傾斜部２９の傾斜角度を２０°に固定した上で、圧着治具３０の傾斜面３４の形成範囲Ｌ（傾斜部２９におけるＸ軸方向についての長さ寸法Ｌ）を０ｍｍ～１．２ｍｍの範囲で異なるものを用意し、それらの圧着治具３０を用いて圧着した端子付き電線１０の電線１１の変位率と相対強度との関係について知見を得るべく比較実験３を行った。具体的には、比較実験３では、傾斜面３４の形成範囲Ｌを０ｍｍ、０．２ｍｍ、０．４ｍｍ、０．６ｍｍ、０．８ｍｍ、１．０ｍｍ、１．２ｍｍとしたものをそれぞれ用意し、これらの圧着治具３０を用いて端子付き電線１０の圧着作業をそれぞれ行っている。そして、圧着された端子付き電線１０の電線１１に引っ張り力を作用させて電線１１が断線に至った相対強度と、断線に至るまでに伸びた電線１１の変位率（伸び率）と、をそれぞれ測定した。その結果を図９に示す。図９は、横軸を、電線１１に引っ張り力を作用させて電線１１が断線に至るまでに伸びた電線１１の変位率（単位は「％」）とし、縦軸を、電線１１に引っ張り力を作用させて電線１１が断線に至った相対強度（無単位）としたグラフである。この電線１１の変位率は、例えば断線に至った電線１１の長さを、引っ張り力を付与する前の電線１１の長さにて除した比率により求められる。また相対強度は、端子金具２０の圧着前後の電線１１の強度比（圧着後の電線１１の固着力を圧着前の電線１１の強度で除した比率）である。なお、図９には、参考のため、端子金具２０を圧着していない電線１１のみを用いて上記のような引っ張り力の付与を行った場合のデータを二点鎖線にて示されており、図９の凡例中には「電線のみ」と記されている。 Next, after the inclination angle of the inclined portion 29 is fixed at 20 °, the formation range L of the inclined surface 34 of the crimping jig 30 (the length dimension L in the X-axis direction in the inclined portion 29) is set to 0 mm to 1. A different one was prepared in a range of 2 mm, and Comparative Experiment 3 was performed to obtain knowledge about the relationship between the displacement rate and the relative strength of the electric wire 11 of the electric wire with terminal 10 crimped using the crimping jig 30. Specifically, in Comparative Experiment 3, preparations were made in which the formation range L of the inclined surface 34 was 0 mm, 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, 1.0 mm, and 1.2 mm, respectively. These crimping jigs 30 are used to crimp the terminal-attached electric wires 10 respectively. And the tensile strength is made to act on the electric wire 11 of the electric wire 11 with a terminal crimped | bonded, and the displacement strength (elongation rate) of the electric wire 11 extended until it reached the wire breakage and the electric wire 11 reached the wire breakage, respectively. It was measured. The result is shown in FIG. In FIG. 9, the horizontal axis represents the displacement rate (unit: “%”) of the electric wire 11 that has been stretched until the electric wire 11 is broken by applying a tensile force to the electric wire 11, and the vertical axis represents the tensile force applied to the electric wire 11. Is a graph showing the relative strength (unitless) at which the electric wire 11 has broken. The displacement rate of this electric wire 11 is calculated | required, for example by the ratio which remove | divided the length of the electric wire 11 which resulted in the disconnection by the length of the electric wire 11 before providing tensile force. The relative strength is the strength ratio of the electric wire 11 before and after the terminal metal fitting 20 is crimped (the ratio obtained by dividing the fixing force of the electric wire 11 after crimping by the strength of the electric wire 11 before crimping). In addition, in FIG. 9, the data at the time of giving the above tensile force using only the electric wire 11 which has not crimped | bonded the terminal metal fitting 20 for reference is shown with the dashed-two dotted line, In the legend of FIG. 9, “electric wire only” is indicated.
　比較実験３の実験結果について説明する。図９のグラフによれば、傾斜面３４の形成範囲Ｌが０ｍｍ、０．２ｍｍとされた場合では、十分な相対強度に達する前の段階で電線１１が断線しているのに対し、傾斜面３４の形成範囲Ｌが０．４ｍｍ～１．２ｍｍとされた場合では、十分な相対強度に達した後に電線１１が断線している。従って、少なくとも傾斜面３４の形成範囲Ｌを０．２ｍｍよりも大きな値とすれば、十分な相対強度が得られる、と言える。そして、傾斜面３４の形成範囲Ｌが０．０ｍｍから１．０ｍｍに至るまでの範囲において、相対強度は、傾斜面３４の形成範囲Ｌに概ね比例するような関係にある。ここで、傾斜面３４の形成範囲Ｌを０．４ｍｍ、０．６ｍｍ、０．８ｍｍとしたもの同士を比較すると、相対強度に関しては、０．８ｍｍとしたものと０．６ｍｍとしたものとの差が、０．６ｍｍとしたものと０．４ｍｍとしたものとの差よりも格段に大きくなっていることが分かる。従って、傾斜面３４の形成範囲Ｌが「０．８ｍｍ≦Ｌ≦１．２ｍｍ」の範囲とされることで、相対強度がより高いものとなる。さらには、傾斜面３４の形成範囲Ｌが１．０ｍｍから１．２ｍｍの範囲とされると、相対強度が最大限近く高いものとなる。特に、傾斜面３４の形成範囲Ｌが１．２ｍｍとされる場合には、電線１１の変位率が最大限近く大きなものとなるから、接続信頼性がより高いものとなっている。また、傾斜面３４の形成範囲Ｌが１．２ｍｍ以上とされる場合には、圧着治具３０の接触面３１に占める傾斜面３４（芯線圧着部２６に占める傾斜部２９）の長さ比率が大きくなるのに伴って平行面３２（並行部２７）の長さ比率が小さくなり過ぎるため、芯線１２に対する接続信頼性が低下するおそれがあることから、傾斜面３４の形成範囲Ｌは、最大値を１．２ｍｍとするのが好ましいものとされる。 The experimental results of comparative experiment 3 will be described. According to the graph of FIG. 9, when the formation range L of the inclined surface 34 is 0 mm and 0.2 mm, the wire 11 is disconnected before reaching a sufficient relative strength, whereas the inclined surface 34 When the formation range L of 34 is 0.4 mm to 1.2 mm, the electric wire 11 is disconnected after reaching a sufficient relative strength. Accordingly, it can be said that a sufficient relative strength can be obtained if at least the formation range L of the inclined surface 34 is set to a value larger than 0.2 mm. And in the range where the formation range L of the inclined surface 34 reaches from 0.0 mm to 1.0 mm, the relative strength is in a relationship that is approximately proportional to the formation range L of the inclined surface 34. Here, when the ranges where the formation range L of the inclined surface 34 is 0.4 mm, 0.6 mm, and 0.8 mm are compared with each other, the relative strength is 0.8 mm and 0.6 mm. It can be seen that the difference is much larger than the difference between the 0.6 mm and 0.4 mm. Therefore, when the formation range L of the inclined surface 34 is in the range of “0.8 mm ≦ L ≦ 1.2 mm”, the relative strength becomes higher. Furthermore, when the formation range L of the inclined surface 34 is in the range of 1.0 mm to 1.2 mm, the relative strength is nearly as high as possible. In particular, when the formation range L of the inclined surface 34 is set to 1.2 mm, the displacement rate of the electric wire 11 becomes nearly as large as possible, so that the connection reliability is higher. When the formation range L of the inclined surface 34 is 1.2 mm or more, the length ratio of the inclined surface 34 (the inclined portion 29 occupying the core wire crimping portion 26) occupying the contact surface 31 of the crimping jig 30 is As the length increases, the length ratio of the parallel surface 32 (parallel portion 27) becomes too small, and the connection reliability with respect to the core wire 12 may decrease. Therefore, the formation range L of the inclined surface 34 is the maximum value. Is preferably 1.2 mm.
　本実施形態に係る端子付き電線１０の構成は以上のような構造であり、続いて端子付き電線１０の製造方法を説明する。端子付き電線１０の製造方法は、端子金具２０における芯線受け部２５に対して電線１１の芯線１２を配置する芯線配置工程と、圧着治具３０を用いて芯線圧着部２６をかしめ付けて芯線受け部２５との間で芯線１２を圧着する圧着工程と、を少なくとも備える。 The configuration of the electric wire with terminal 10 according to the present embodiment is the above structure, and a method for manufacturing the electric wire with terminal 10 will be described. The method for manufacturing the terminal-attached electric wire 10 includes a core wire placement step of placing the core wire 12 of the electric wire 11 with respect to the core wire receiving portion 25 of the terminal fitting 20 and a core wire crimping portion 26 by caulking the core wire crimping portion 26. A crimping step of crimping the core wire 12 with the portion 25.
　芯線配置工程では、端子金具２０を基台上に載置した上で、電線１１の端末部の被覆１３を除去することで露出した芯線１２を、端子金具２０におけるワイヤバレル部２３を構成する芯線受け部２５上にセットする。また、電線１１の被覆１３の端部を、インシュレーションバレル部２４上にセットしておく。 In the core wire arranging step, the core wire 12 constituting the wire barrel portion 23 in the terminal metal fitting 20 is replaced with the core wire 12 exposed by removing the covering 13 of the terminal portion of the electric wire 11 after placing the terminal metal fitting 20 on the base. Set on the receiving portion 25. Further, the end portion of the covering 13 of the electric wire 11 is set on the insulation barrel portion 24.
　圧着工程では、圧着治具３０を用いて芯線圧着部２６をかしめ付けるようにしており、それにより芯線１２は、芯線受け部２５と芯線圧着部２６との間で圧着される。この圧着工程にて用いられる圧着治具３０は、図６に示すように、芯線圧着部２６に接触する接触面３１が、芯線受け部２５に並行する並行面３２と、並行面３２に対して後側（電線１１の導出側）に連なって並行面３２から離れるほど芯線受け部２５との間の距離が大きくなるよう傾斜した傾斜面３４と、を有していることから、かしめ付けられた芯線圧着部２６は、圧着治具３０の接触面３１が転写された形状となる。つまり、芯線圧着部２６は、芯線受け部２５に並行する並行部２７と、並行部２７に対して後側に連なり、並行部２７から離れるほど芯線受け部２５との間の距離が大きくなるよう傾斜する傾斜部２９と、を少なくとも備えることになる。芯線圧着部２６における傾斜部２９と芯線受け部２５との間に圧着された芯線１２は、傾斜部２９の全域に対して接触することがなく、接触終端位置ＣＥＰよりも後側では傾斜部２９とは非接触となっている。 In the crimping step, the core wire crimping portion 26 is caulked by using the crimping jig 30, whereby the core wire 12 is crimped between the core wire receiving portion 25 and the core wire crimping portion 26. As shown in FIG. 6, the crimping jig 30 used in this crimping process is such that the contact surface 31 that contacts the core wire crimping portion 26 is parallel to the parallel surface 32 parallel to the core wire receiving portion 25 and the parallel surface 32. Since it has an inclined surface 34 that is inclined so that the distance from the core wire receiving portion 25 increases as the distance from the parallel surface 32 continues to the rear side (the lead-out side of the electric wire 11). The core wire crimping portion 26 has a shape to which the contact surface 31 of the crimping jig 30 is transferred. That is, the core wire crimping portion 26 is connected to the parallel portion 27 parallel to the core wire receiving portion 25 and the rear side with respect to the parallel portion 27, and the distance from the core wire receiving portion 25 increases as the distance from the parallel portion 27 increases. And an inclined portion 29 that is inclined. The core wire 12 crimped between the inclined portion 29 and the core wire receiving portion 25 in the core wire crimping portion 26 does not contact the entire area of the inclined portion 29, and the inclined portion 29 is located behind the contact end position CEP. Is contactless.
　そして、芯線圧着部２６には、圧着治具３０において並行面３２に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲、好ましくは「θ＝２０°」とされる傾斜面３４を有する接触面３１が転写されることで、傾斜部２９は、並行部２７に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲、好ましくは「θ＝２０°」とされる。従って、傾斜部２９における接触終端位置ＣＥＰが、圧着に際して用いられる圧着治具３０と重畳する配置になるのに加えて、傾斜部２９から芯線１２に付与される圧縮力が十分に得られる。これにより、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力を十分に確保することができる。 The core wire crimping portion 26 has an inclined surface in which the inclination angle θ formed with respect to the parallel surface 32 in the crimping jig 30 is in the range of “10 ° <θ <30 °”, preferably “θ = 20 °”. By transferring the contact surface 31 having 34, the inclined portion 29 has an inclination angle θ with respect to the parallel portion 27 in the range of “10 ° <θ <30 °”, preferably “θ = 20 °”. Is done. Therefore, in addition to the arrangement where the contact end position CEP in the inclined portion 29 overlaps with the crimping jig 30 used for crimping, the compressive force applied to the core wire 12 from the inclined portion 29 is sufficiently obtained. Thereby, when the pulling force acts on the electric wire 11, the adhering force between the electric wire 11 and the terminal fitting 20 can be sufficiently ensured.
　以上説明したように本実施形態の端子付き電線１０は、芯線１２を有する電線１１と、電線１１の端末に接続される端子金具（端子）２０と、端子金具２０を構成し、芯線１２を受ける芯線受け部２５と、端子金具２０を構成し、芯線受け部２５との間で芯線１２を圧着する芯線圧着部２６と、芯線圧着部２６を構成し、芯線受け部２５に並行する並行部２７と、芯線圧着部２６を構成し、並行部２７に対して電線１１の導出側に連なって並行部２７から離れるほど芯線受け部２５との間の距離が大きくなるよう傾斜した傾斜部（傾斜部）２９であって、並行部２７に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲とされる傾斜部２９と、を少なくとも備える。 As described above, the terminal-attached electric wire 10 of the present embodiment constitutes the electric wire 11 having the core wire 12, the terminal fitting (terminal) 20 connected to the terminal of the electric wire 11, and the terminal fitting 20, and receives the core wire 12. The core wire receiving portion 25 and the terminal fitting 20 are configured, and the core wire crimping portion 26 that crimps the core wire 12 between the core wire receiving portion 25 and the core wire crimping portion 26 are configured, and the parallel portion 27 that is parallel to the core wire receiving portion 25. And an inclined portion (inclined portion) that is inclined so that the distance between the parallel wire 27 and the core wire receiving portion 25 increases as the distance from the parallel wire 27 increases as the distance from the parallel wire 27 increases. ) 29 and at least an inclined portion 29 in which an inclination angle θ formed with respect to the parallel portion 27 is in a range of “10 ° <θ <30 °”.
　電線１１の端末に端子金具２０を接続するに際しては、例えば、端子金具２０を構成する芯線受け部２５に電線１１の芯線１２を配置した状態で圧着治具３０を用いて芯線圧着部２６をかしめ付ける。芯線圧着部２６は、芯線受け部２５に並行する並行部２７と、並行部２７に対して電線１１の導出側に連なる傾斜部２９と、を少なくとも備えており、この傾斜部２９は、並行部２７から離れるほど芯線受け部２５との間の距離が大きくなるよう傾斜している。このような構成の傾斜部２９と芯線受け部２５との間で圧着された芯線１２は、傾斜部２９の全域に対して接触することがなく、ある位置よりも電線１１の導出側では傾斜部２９とは非接触となっており、以下ではこの位置を接触終端位置ＣＥＰとする。この接触終端位置ＣＥＰは、並行部２７に対する傾斜部２９の傾斜角度に応じて変動するものとされる。 When connecting the terminal fitting 20 to the terminal of the electric wire 11, for example, the core wire crimping portion 26 is caulked using the crimping jig 30 in a state where the core wire 12 of the electric wire 11 is arranged on the core wire receiving portion 25 constituting the terminal fitting 20. wear. The core wire crimping portion 26 includes at least a parallel portion 27 parallel to the core wire receiving portion 25 and an inclined portion 29 that is continuous with the parallel portion 27 on the lead-out side of the electric wire 11. It is inclined so that the distance from the core wire receiving portion 25 increases as the distance from the terminal 27 increases. The core wire 12 crimped between the inclined portion 29 and the core wire receiving portion 25 having such a configuration does not come into contact with the entire area of the inclined portion 29, and the inclined portion is closer to the lead-out side of the electric wire 11 than a certain position. 29 is non-contact, and this position is hereinafter referred to as a contact end position CEP. The contact end position CEP varies according to the inclination angle of the inclined portion 29 with respect to the parallel portion 27.
　ここで、仮に並行部２７に対する傾斜部２９の傾斜角度が１０°以下になると、傾斜部２９における接触終端位置ＣＥＰが、圧着に際して用いられる圧着治具３０よりも電線１１の導出側の配置となり易い傾向にある。そのような配置になると、傾斜部２９からの圧縮力を芯線１２に十分に伝達できず、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力を十分に確保できなくなるおそれがある。その一方で、仮に並行部２７に対する傾斜部２９の傾斜角度が３０°以上になると、傾斜部２９における接触終端位置ＣＥＰが、圧着に際して用いられる圧着治具３０と重畳する配置とはなるものの、圧着時に傾斜部２９に芯線１２が追従し難くなることから、接触終端位置ＣＥＰが並行部２７と傾斜部２９との境界位置に近い配置となる。このため、傾斜部２９から芯線１２に付与される圧縮力が十分に得られなくなり、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力を十分に確保できなくなるおそれがある。 Here, if the inclination angle of the inclined portion 29 with respect to the parallel portion 27 is 10 ° or less, the contact end position CEP in the inclined portion 29 is more easily arranged on the lead-out side of the electric wire 11 than the crimping jig 30 used for crimping. There is a tendency. In such an arrangement, the compressive force from the inclined portion 29 cannot be sufficiently transmitted to the core wire 12, and a sufficient securing force between the electric wire 11 and the terminal fitting 20 when a tensile force acts on the electric wire 11 is ensured. There is a risk that it will not be possible. On the other hand, if the inclination angle of the inclined portion 29 with respect to the parallel portion 27 is 30 ° or more, the contact terminal position CEP in the inclined portion 29 is arranged so as to overlap with the crimping jig 30 used for the crimping. Since the core wire 12 sometimes does not easily follow the inclined portion 29, the contact end position CEP is arranged close to the boundary position between the parallel portion 27 and the inclined portion 29. For this reason, the compressive force applied to the core wire 12 from the inclined portion 29 cannot be sufficiently obtained, and the fixing force between the electric wire 11 and the terminal fitting 20 when a pulling force acts on the electric wire 11 cannot be ensured sufficiently. There is a fear.
　その点、傾斜部２９は、並行部２７に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲とされているので、傾斜部２９における接触終端位置ＣＥＰが圧着に際して用いられる圧着治具３０と重畳する配置になり、且つ接触終端位置ＣＥＰが並行部２７と傾斜部２９との境界位置から十分な距離を空けた配置となることから、傾斜部２９から芯線１２に付与される圧縮力が十分なものとなる。これにより、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力を十分に確保することができる。 In that respect, since the inclined portion 29 has an inclination angle θ formed with respect to the parallel portion 27 in a range of “10 ° <θ <30 °”, the contact end position CEP in the inclined portion 29 is used for the pressure bonding. The contact end position CEP is arranged so as to overlap with the jig 30 and a sufficient distance from the boundary position between the parallel part 27 and the inclined part 29, so that it is applied from the inclined part 29 to the core wire 12. The compressive force is sufficient. Thereby, when the pulling force acts on the electric wire 11, the adhering force between the electric wire 11 and the terminal fitting 20 can be sufficiently ensured.
　また、傾斜部２９は、傾斜角度θが「θ＝２０°」とされる。このようにすれば、並行部２７と傾斜部２９との境界位置から傾斜部２９における接触終端位置ＣＥＰまでの距離を最大限近くまで確保することができるので、傾斜部２９から芯線１２に付与される圧縮力を最大限近くにすることができる。これにより、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力を最大限近くまで確保することができる。 Further, the inclined portion 29 has an inclination angle θ of “θ = 20 °”. In this way, the distance from the boundary position between the parallel part 27 and the inclined part 29 to the contact end position CEP in the inclined part 29 can be ensured to the maximum extent, so that it is given from the inclined part 29 to the core wire 12. The compression force that can be achieved is close to the maximum. Thereby, when the pulling force acts on the electric wire 11, the adhering force between the electric wire 11 and the terminal fitting 20 can be ensured to the maximum.
　また、傾斜部２９は、並行部２７との並び方向についての長さ寸法Ｌが「０．２ｍｍ＜Ｌ≦１．２ｍｍ」の範囲とされる。仮に傾斜部２９の上記長さ寸法Ｌが０．２ｍｍ以下とされる場合には、並行部２７と傾斜部２９との境界位置から傾斜部２９における接触終端位置ＣＥＰまでの距離が十分に確保されなくなるため、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力が不十分となって断線が生じ易くなる。その一方、傾斜部２９の上記長さ寸法Ｌが１．２ｍｍ以上とされる場合には、芯線圧着部２６に占める傾斜部２９の長さ比率が大きくなるのに伴って並行部２７の長さ比率が小さくなり過ぎるため、芯線１２に対する接続信頼性が低下するおそれがある。その点、傾斜部２９の上記長さ寸法Ｌが「０．２ｍｍ＜Ｌ≦１．２ｍｍ」の範囲とされることで、並行部２７と傾斜部２９との境界位置から傾斜部２９における接触終端位置ＣＥＰまでの距離が十分に確保されて電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力が十分に得られるとともに、芯線圧着部２６に占める並行部２７の長さ比率が十分に確保されて芯線１２に対する接続信頼性が十分に高いものとなる。 In addition, the inclined portion 29 has a length dimension L in the direction of alignment with the parallel portion 27 in a range of “0.2 mm <L ≦ 1.2 mm”. If the length L of the inclined portion 29 is 0.2 mm or less, a sufficient distance from the boundary position between the parallel portion 27 and the inclined portion 29 to the contact end position CEP in the inclined portion 29 is ensured. Therefore, when a pulling force acts on the electric wire 11, the fixing force between the electric wire 11 and the terminal fitting 20 is insufficient, and disconnection is likely to occur. On the other hand, when the length L of the inclined portion 29 is 1.2 mm or more, the length of the parallel portion 27 increases as the length ratio of the inclined portion 29 occupying the core wire crimping portion 26 increases. Since the ratio becomes too small, connection reliability to the core wire 12 may be reduced. In that respect, the length L of the inclined portion 29 is in the range of “0.2 mm <L ≦ 1.2 mm”, so that the contact end point in the inclined portion 29 from the boundary position between the parallel portion 27 and the inclined portion 29 is achieved. When the distance to the position CEP is sufficiently secured and a tensile force acts on the electric wire 11, a sufficient fixing force between the electric wire 11 and the terminal fitting 20 can be obtained, and the parallel portion 27 occupying the core wire crimping portion 26 can be obtained. The length ratio is sufficiently secured, and the connection reliability with respect to the core wire 12 is sufficiently high.
　また、傾斜部２９は、並び方向についての長さ寸法Ｌが「０．８ｍｍ≦Ｌ≦１．２ｍｍ」の範囲とされる。まず、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力は、一定の範囲において上記長さ寸法Ｌに比例するような関係にある。ここで、例えば、傾斜部２９の上記長さ寸法Ｌを０．４ｍｍ、０．６ｍｍ、０．８ｍｍとしたもの同士を比較すると、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力に関しては、０．８ｍｍとしたものと０．６ｍｍとしたものとの差が、０．６ｍｍとしたものと０．４ｍｍとしたものとの差よりも格段に大きくなる。従って、傾斜部２９の上記長さ寸法Ｌが「０．８ｍｍ≦Ｌ≦１．２ｍｍ」の範囲とされることで、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力がより高いものとなる。 Further, the inclined portion 29 has a length dimension L in the arrangement direction in a range of “0.8 mm ≦ L ≦ 1.2 mm”. First, when a tensile force is applied to the electric wire 11, the adhering force between the electric wire 11 and the terminal fitting 20 is in a relationship proportional to the length L in a certain range. Here, for example, when the length L of the inclined portion 29 is set to 0.4 mm, 0.6 mm, and 0.8 mm, the electric wire 11 and the terminal fitting 20 when a tensile force acts on the electric wire 11 are compared. As for the adhesive force between the two, the difference between 0.8 mm and 0.6 mm is much larger than the difference between 0.6 mm and 0.4 mm. Therefore, the length L of the inclined portion 29 is in the range of “0.8 mm ≦ L ≦ 1.2 mm”, so that when the tensile force is applied to the electric wire 11, the distance between the electric wire 11 and the terminal fitting 20. The adhesive strength of the is higher.
　また、傾斜部２９は、並び方向についての長さ寸法Ｌが「Ｌ＝１．２ｍｍ」とされる。このようにすれば、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力が最大限近く高いものとなる。しかも、電線１１に引っ張り力が作用した場合に、断線に至るまでに電線１１に生じる変位率が最大限近く大きなものとなるから、接続信頼性がより高いものとなっている。 In addition, the inclined portion 29 has a length dimension L in the arrangement direction of “L = 1.2 mm”. If it does in this way, the adhering force between the electric wire 11 and the terminal metal fitting 20 when a pulling force acts on the electric wire 11 will become high to the maximum. Moreover, when a pulling force is applied to the electric wire 11, the displacement rate generated in the electric wire 11 until the wire breaks becomes as large as possible, so that the connection reliability is higher.
　また、電線１１は、芯線１２がアルミニウムまたはアルミニウム合金からなる。このようにすれば、芯線１２がアルミニウムまたはアルミニウム合金からなる場合、芯線１２の表面には強固な酸化膜が形成される。このため、芯線１２と芯線圧着部２６との電気的な接続を確実にするには、芯線圧着部２６を芯線１２に対して高圧縮状態で圧着することが求められることから、芯線１２に断線が生じ易くなる傾向とされる。本明細書に開示された技術は、このような構成の端子付き電線１０において特に有効である。 Further, in the electric wire 11, the core wire 12 is made of aluminum or an aluminum alloy. In this way, when the core wire 12 is made of aluminum or an aluminum alloy, a strong oxide film is formed on the surface of the core wire 12. For this reason, in order to ensure electrical connection between the core wire 12 and the core wire crimping portion 26, it is required to crimp the core wire crimping portion 26 to the core wire 12 in a highly compressed state. Is likely to occur. The technique disclosed in this specification is particularly effective in the electric wire with terminal 10 having such a configuration.
　また、本実施形態の端子付き電線１０の製造方法は、端子金具２０における芯線受け部２５に対して電線１１の芯線１２を配置する芯線配置工程と、圧着治具３０を用いて芯線圧着部２６をかしめ付けて芯線受け部２５との間で芯線１２を圧着する圧着工程であって、圧着治具３０として、芯線圧着部２６に接触する接触面３１が、芯線受け部２５に並行する並行面３２と、並行面３２に対して電線１１の導出側に連なって並行面３２から離れるほど芯線受け部２５との間の距離が大きくなるよう傾斜した傾斜面（傾斜面）３４であって、並行面３２に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲となる傾斜面３４と、を有するものを用いる圧着工程と、を少なくとも備える。 Moreover, the manufacturing method of the electric wire 10 with a terminal of this embodiment uses the core wire arrangement | positioning process which arrange | positions the core wire 12 of the electric wire 11 with respect to the core wire receiving part 25 in the terminal metal fitting 20, and the core wire crimping part 26 using the crimping jig 30. A crimping step in which the core wire 12 is crimped between the core wire receiving portion 25 and a contact surface 31 contacting the core wire crimping portion 26 as a crimping jig 30 is parallel to the core wire receiving portion 25 32 and an inclined surface (inclined surface) 34 which is inclined so that the distance between the parallel surface 32 and the core wire receiving portion 25 increases as the distance from the parallel surface 32 increases. A pressure bonding step using at least an inclined surface 34 having an inclination angle θ with respect to the surface 32 in a range of “10 ° <θ <30 °”.
　芯線配置工程にて端子金具２０における芯線受け部２５に対して電線１１の芯線１２を配置したら、続いて圧着工程を行う。圧着工程では、圧着治具３０を用いて芯線圧着部２６をかしめ付けるようにしており、それにより芯線１２は、芯線受け部２５と芯線圧着部２６との間で圧着される。圧着工程にて用いられる圧着治具３０は、芯線圧着部２６に接触する接触面３１が、芯線受け部２５に並行する並行面３２と、並行面３２に対して電線１１の導出側に連なる傾斜面３４と、を有しており、この傾斜面３４は、並行面３２から離れるほど芯線受け部２５との間の距離が大きくなるよう傾斜している。このような構成の圧着治具３０によってかしめ付けられた芯線圧着部２６は、圧着治具３０の接触面３１が転写された形状となる。つまり、芯線圧着部２６は、芯線受け部２５に並行する並行部２７と、並行部２７に対して電線１１の導出側に連なり、並行部２７から離れるほど芯線受け部２５との間の距離が大きくなるよう傾斜する傾斜部２９と、を少なくとも備えることになる。芯線圧着部２６における傾斜部２９と芯線受け部２５との間に圧着された芯線１２は、傾斜部２９の全域に対して接触することがなく、ある位置よりも電線１１の導出側では傾斜部２９とは非接触となっており、以下ではこの位置を接触終端位置ＣＥＰとする。この接触終端位置ＣＥＰは、並行部２７に対する傾斜部２９の傾斜角度に応じて変動し得るものとされる。 If the core wire 12 of the electric wire 11 is arrange | positioned with respect to the core wire receiving part 25 in the terminal metal fitting 20 in a core wire arrangement | positioning process, a crimping | compression-bonding process will be performed subsequently. In the crimping step, the core wire crimping portion 26 is caulked using the crimping jig 30, whereby the core wire 12 is crimped between the core wire receiving portion 25 and the core wire crimping portion 26. In the crimping jig 30 used in the crimping process, the contact surface 31 that contacts the core wire crimping portion 26 has a parallel surface 32 parallel to the core wire receiving portion 25 and an inclination that leads to the lead-out side of the electric wire 11 with respect to the parallel surface 32. The inclined surface 34 is inclined such that the distance from the core wire receiving portion 25 increases as the distance from the parallel surface 32 increases. The core wire crimping portion 26 swaged by the crimping jig 30 having such a configuration has a shape in which the contact surface 31 of the crimping jig 30 is transferred. That is, the core wire crimping portion 26 is connected to the parallel portion 27 parallel to the core wire receiving portion 25 and the lead-out side of the electric wire 11 with respect to the parallel portion 27, and the distance from the core wire receiving portion 25 increases as the distance from the parallel portion 27 increases. And an inclined portion 29 that is inclined so as to increase. The core wire 12 crimped between the inclined portion 29 and the core wire receiving portion 25 in the core wire crimping portion 26 does not come into contact with the entire area of the inclined portion 29, and the inclined portion on the lead-out side of the electric wire 11 from a certain position. 29 is non-contact, and this position is hereinafter referred to as a contact end position CEP. The contact end position CEP can be varied according to the inclination angle of the inclined portion 29 with respect to the parallel portion 27.
　ここで、仮に並行部２７に対する傾斜部２９の傾斜角度が１０°以下になると、傾斜部２９における接触終端位置ＣＥＰが、圧着に際して用いられる圧着治具３０よりも電線１１の導出側の配置となり易い傾向にある。そのような配置になると、傾斜部２９から芯線１２に付与される圧縮力を一定になるよう制御するのが困難となるため、同圧縮力が十分に得られなくなるおそれがある。このため、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力を十分に確保できなくなるおそれがあった。その一方で、仮に並行部２７に対する傾斜部２９の傾斜角度が３０°以上になると、傾斜部２９における接触終端位置ＣＥＰが、圧着に際して用いられる圧着治具３０と重畳する配置とはなるものの、圧着に伴う傾斜部２９の変形に芯線１２が追従し難くなるため、傾斜部２９から芯線１２に付与される圧縮力が十分に得られなくなり、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力を十分に確保できなくなるおそれがある。 Here, if the inclination angle of the inclined portion 29 with respect to the parallel portion 27 is 10 ° or less, the contact end position CEP in the inclined portion 29 is more easily arranged on the lead-out side of the electric wire 11 than the crimping jig 30 used for crimping. There is a tendency. In such an arrangement, it becomes difficult to control the compression force applied from the inclined portion 29 to the core wire 12 to be constant, and thus the compression force may not be sufficiently obtained. For this reason, there is a possibility that a sufficient fixing force between the electric wire 11 and the terminal fitting 20 cannot be secured when a tensile force acts on the electric wire 11. On the other hand, if the inclination angle of the inclined portion 29 with respect to the parallel portion 27 is 30 ° or more, the contact terminal position CEP in the inclined portion 29 is arranged so as to overlap with the pressure bonding jig 30 used for pressure bonding. Since the core wire 12 is less likely to follow the deformation of the inclined portion 29 associated with the wire 11, the compressive force applied to the core wire 12 from the inclined portion 29 cannot be sufficiently obtained, and the wire 11 and the terminal when a tensile force acts on the wire 11 There is a possibility that a sufficient fixing force with the metal fitting 20 cannot be secured.
　その点、芯線圧着部２６には、圧着治具３０において並行面３２に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲とされる傾斜面３４を有する接触面３１が転写されることで、傾斜部２９は、並行部２７に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲とされる。従って、傾斜部２９における接触終端位置ＣＥＰが、圧着に際して用いられる圧着治具３０と重畳する配置になるのに加えて、傾斜部２９から芯線１２に付与される圧縮力が十分に得られる。これにより、電線１１に引っ張り力が作用した場合における電線１１と端子金具２０との間の固着力を十分に確保することができる。 In this respect, the contact surface 31 having the inclined surface 34 in which the inclination angle θ formed with respect to the parallel surface 32 in the crimping jig 30 is in the range of “10 ° <θ <30 °” is transferred to the core wire crimping portion 26. Thus, the inclined portion 29 has an inclination angle θ formed with respect to the parallel portion 27 in a range of “10 ° <θ <30 °”. Therefore, in addition to the arrangement where the contact end position CEP in the inclined portion 29 overlaps with the crimping jig 30 used for crimping, the compressive force applied to the core wire 12 from the inclined portion 29 is sufficiently obtained. Thereby, when the pulling force acts on the electric wire 11, the adhering force between the electric wire 11 and the terminal fitting 20 can be sufficiently ensured.
　＜他の実施形態＞
　本明細書に開示される技術は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本明細書に開示される技術に含まれる。 <Other embodiments>
The technology disclosed in the present specification is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technology disclosed in the present specification.
　（１）上記した実施形態では、傾斜部（傾斜面）の傾斜角度θを「θ＝２０°」とした場合を示したが、同傾斜角度θを「１０°＜θ＜３０°」の範囲において適宜に変更することも勿論可能である。 (1) In the above-described embodiment, the inclination angle θ of the inclined portion (inclined surface) is set to “θ = 20 °”, but the inclination angle θ is in the range of “10 ° <θ <30 °”. Of course, it is also possible to change appropriately.
　（２）上記した実施形態では、傾斜面の形成範囲Ｌ（傾斜部の長さ寸法Ｌ）を「０．２ｍｍ＜Ｌ≦１．２ｍｍ」の範囲とした場合を示したが、例えば電線の太さ、材質、構造（例えば芯線を構成する金属細線の巻き方など）や端子金具の板厚、材質などを変更した場合には、傾斜面の形成範囲Ｌの数値範囲は上記以外に変更することが可能である。 (2) In the above-described embodiment, the case where the formation range L of the inclined surface (the length dimension L of the inclined portion) is in the range of “0.2 mm <L ≦ 1.2 mm” is shown. If the material, structure (for example, how to wind the fine metal wire constituting the core wire), the thickness of the terminal fitting, the material, etc. are changed, the numerical range of the inclined surface formation range L must be changed to other than the above. Is possible.
　（３）上記した実施形態では、電線の芯線に係る材料であるアルミニウム合金の一例としてＡｌ－Ｍｇ－Ｓｉ系合金（６０００系合金）を例示したが、これ以外の種類のアルミニウム合金を用いることも可能である。 (3) In the above embodiment, an Al—Mg—Si based alloy (6000 based alloy) is exemplified as an example of an aluminum alloy that is a material related to the core of the electric wire. However, other types of aluminum alloys may be used. Is possible.
　（４）上記した実施形態では、電線の芯線に係る材料をアルミニウムまたはアルミニウム合金とした場合を示したが、電線の芯線に係る材料を銅または銅合金とすることも可能である。その場合、銅合金にアルミニウムが含有されていても構わない。 (4) In the above-described embodiment, the case where the material related to the core wire of the electric wire is made of aluminum or an aluminum alloy is shown, but the material related to the core wire of the electric wire can be made of copper or a copper alloy. In that case, the copper alloy may contain aluminum.
　（５）上記した実施形態では、端子金具を銅または銅合金製とした場合を示したが、それ以外の材料を用いることも可能である。 (5) In the above-described embodiment, the case where the terminal fitting is made of copper or a copper alloy is shown, but other materials may be used.
　（６）上記した実施形態では、前側傾斜部の傾斜角度や長さ寸法が傾斜部の傾斜角度や長さ寸法とほぼ同じとされた場合を示したが、前側傾斜部の傾斜角度や長さ寸法が傾斜部の傾斜角度や長さ寸法とは異なっていても構わない。つまり芯線圧着部は、前後非対称形状でもよい。 (6) In the above-described embodiment, the case where the inclination angle and the length dimension of the front inclined part are substantially the same as the inclination angle and the length dimension of the inclined part is shown. However, the inclination angle and length of the front inclined part are shown. The dimension may be different from the inclination angle or the length dimension of the inclined portion. That is, the core wire crimping portion may have an asymmetrical shape.
　（７）上記した実施形態では、雌型の端子金具を例示したが、雄型の端子金具を用いることも可能である。 (7) In the above-described embodiment, the female terminal fitting is exemplified, but a male terminal fitting may be used.
　（８）上記した実施形態では、比較実験３において傾斜部の傾斜角度を２０°に固定した場合を例示したが、傾斜部の傾斜角度θが「１０°＜θ＜３０°」の範囲内であれば、上記比較実験３の実験結果と概ね同様の結果が得られるものと推考される。 (8) In the above-described embodiment, the case where the inclination angle of the inclined portion is fixed to 20 ° in the comparative experiment 3 is exemplified. However, the inclination angle θ of the inclined portion is within the range of “10 ° <θ <30 °”. If there is, it is presumed that substantially the same result as the experimental result of the comparative experiment 3 is obtained.
　１０：端子付き電線、１１：電線、１２：芯線、２０：端子金具（端子）、２５：芯線受け部、２６：芯線圧着部、２７：並行部、２９：傾斜部、３０：圧着治具、３１：接触面、３２：平行面、３４：傾斜面、Ｘ軸：並び方向 10: electric wire with terminal, 11: electric wire, 12: core wire, 20: terminal fitting (terminal), 25: core wire receiving portion, 26: core wire crimping portion, 27: parallel portion, 29: inclined portion, 30: crimping jig, 31: contact surface, 32: parallel surface, 34: inclined surface, X axis: alignment direction

Claims (6)

  1. 　芯線を有する電線と、
    　前記電線の端末に接続される端子と、
    　前記端子を構成し、前記芯線を受ける芯線受け部と、
    　前記端子を構成し、前記芯線受け部との間で前記芯線を圧着する芯線圧着部と、
    　前記芯線圧着部を構成し、前記芯線受け部に並行する並行部と、
    　前記芯線圧着部を構成し、前記並行部に対して前記電線の導出側に連なって前記並行部から離れるほど前記芯線受け部との間の距離が大きくなるよう傾斜した傾斜部であって、前記並行部に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲とされる傾斜部と、を少なくとも備える端子付き電線。     An electric wire having a core wire;
    A terminal connected to a terminal of the electric wire;
    A core wire receiving portion that constitutes the terminal and receives the core wire;
    A core wire crimping portion that constitutes the terminal and crimps the core wire with the core wire receiving portion;
    Constructing the core wire crimping portion, a parallel portion parallel to the core wire receiving portion,
    The core wire crimping portion is configured, and is an inclined portion that is inclined so that a distance from the core wire receiving portion increases as the distance from the parallel portion continues from the parallel portion to the lead-out side of the electric wire, An electric wire with a terminal including at least an inclined portion in which an inclination angle θ formed with respect to the parallel portion is in a range of “10 ° <θ <30 °”.
  2. 　前記傾斜部は、前記並行部との並び方向についての長さ寸法Ｌが「０．２ｍｍ＜Ｌ≦１．２ｍｍ」の範囲とされる請求項１記載の端子付き電線。 2. The electric wire with terminal according to claim 1, wherein the inclined portion has a length L in a range of “0.2 mm <L ≦ 1.2 mm” in an arrangement direction with the parallel portion.
  3. 　前記傾斜部は、前記並び方向についての長さ寸法Ｌが「０．８ｍｍ≦Ｌ≦１．２ｍｍ」の範囲とされる請求項２記載の端子付き電線。 3. The electric wire with a terminal according to claim 2, wherein the inclined portion has a length dimension L in the arrangement direction of “0.8 mm ≦ L ≦ 1.2 mm”.
  4. 　前記傾斜部は、前記並び方向についての長さ寸法Ｌが「Ｌ＝１．２ｍｍ」とされる請求項３記載の端子付き電線。 4. The terminal-attached electric wire according to claim 3, wherein the inclined portion has a length dimension L in the arrangement direction of “L = 1.2 mm”.
  5. 　前記電線は、前記芯線がアルミニウムまたはアルミニウム合金からなる請求項１から請求項４のいずれか１項に記載の端子付き電線。 The electric wire with a terminal according to any one of claims 1 to 4, wherein the core wire is made of aluminum or an aluminum alloy.
  6. 　端子における芯線受け部に対して電線の芯線を配置する芯線配置工程と、
    　圧着治具を用いて芯線圧着部をかしめ付けて前記芯線受け部との間で前記芯線を圧着する圧着工程であって、前記圧着治具として、前記芯線圧着部に接触する接触面が、前記芯線受け部に並行する並行面と、前記並行面に対して前記電線の導出側に連なって前記並行面から離れるほど前記芯線受け部との間の距離が大きくなるよう傾斜した傾斜面であって、前記並行面に対してなす傾斜角度θが「１０°＜θ＜３０°」の範囲となる傾斜面と、を有するものを用いる圧着工程と、を少なくとも備える端子付き電線の製造方法。     A core wire arranging step of arranging the core wire of the electric wire with respect to the core wire receiving portion in the terminal;
    A crimping step of crimping the core wire crimping portion with the core wire receiving portion by crimping the core wire crimping portion using a crimping jig, wherein the contact surface that contacts the core wire crimping portion is the crimping jig, A parallel surface parallel to the core wire receiving portion, and an inclined surface inclined such that a distance between the parallel surface and the core wire receiving portion increases as the distance from the parallel surface continues to the lead-out side of the electric wire. And a crimping step using at least an inclined surface having an inclination angle θ with respect to the parallel surface in a range of “10 ° <θ <30 °”.
PCT/JP2017/018478 2016-06-06 2017-05-17 Terminal-equipped electric wire and method for producing terminal-equipped electric wire WO2017212883A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020162317A (en) * 2019-03-27 2020-10-01 株式会社山田製作所 Stator for motor and method for manufacturing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009187786A (en) * 2008-02-06 2009-08-20 Yazaki Corp Structure for connecting crimp terminal to shielded wire
JP2015159014A (en) * 2014-02-24 2015-09-03 株式会社オートネットワーク技術研究所 Electrical wire with terminal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009187786A (en) * 2008-02-06 2009-08-20 Yazaki Corp Structure for connecting crimp terminal to shielded wire
JP2015159014A (en) * 2014-02-24 2015-09-03 株式会社オートネットワーク技術研究所 Electrical wire with terminal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020162317A (en) * 2019-03-27 2020-10-01 株式会社山田製作所 Stator for motor and method for manufacturing the same
JP7347949B2 (en) 2019-03-27 2023-09-20 株式会社山田製作所 Stator for motor and manufacturing method thereof

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