JP6108867B2 - Wire harness and terminals - Google Patents

Wire harness and terminals Download PDF

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JP6108867B2
JP6108867B2 JP2013032879A JP2013032879A JP6108867B2 JP 6108867 B2 JP6108867 B2 JP 6108867B2 JP 2013032879 A JP2013032879 A JP 2013032879A JP 2013032879 A JP2013032879 A JP 2013032879A JP 6108867 B2 JP6108867 B2 JP 6108867B2
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crimping
wire
crimping portion
conductor
inner peripheral
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JP2014164838A (en
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泰 木原
泰 木原
博 折戸
博 折戸
幸大 川村
幸大 川村
翔 外池
翔 外池
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THE FURUKAW ELECTRIC CO., LTD.
Furukawa Automotive Systems Inc
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THE FURUKAW ELECTRIC CO., LTD.
Furukawa Automotive Systems Inc
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本発明は、ワイヤハーネスおよび端子に関する。   The present invention relates to a wire harness and a terminal.

従来、被覆導線に接続される端子として、圧着部と端子本体とからなる端子が用いられている。圧着部の圧着面には、導線の一部を係止するものとして、セレーションとよばれる係止部が長手方向に所定間隔を隔てて形成され、被覆導線は、圧着部によって端子に圧着される(例えば、特許文献1参照)。セレーションは、被覆導線の被覆から露出した導線に圧着時に食い込むことにより、圧着部からの導線の抜けを防ぐ。   Conventionally, a terminal composed of a crimping portion and a terminal main body is used as a terminal connected to the coated conductor. On the crimping surface of the crimping part, a latching part called serration is formed at a predetermined interval in the longitudinal direction so as to latch a part of the conducting wire, and the coated conducting wire is crimped to the terminal by the crimping part. (For example, refer to Patent Document 1). Serration prevents the lead wire from coming out of the crimping part by biting into the lead wire exposed from the coating of the coated lead wire at the time of crimping.

しかし、被覆導線と端子とを接続する場合、導線と圧着部との間に隙間が生じやすく、導線が外気や水に曝されて腐食が発生することがある。また、近年、ワイヤハーネスを軽量化するためにアルミ製の導線が用いられているが、アルミ製の導線と銅製の端子とを接続する場合、異種金属である導線と端子との接触部に水が侵入し、電食が発生することがある(例えば、特許文献2参照)。   However, when connecting the coated conductor and the terminal, a gap is likely to be formed between the conductor and the crimping part, and the conductor may be exposed to the outside air or water to cause corrosion. In recent years, aluminum conductors have been used to reduce the weight of wire harnesses. However, when connecting aluminum conductors and copper terminals, the contact portion between the conductors of different metals and the terminals is water. May intrude and cause electrolytic corrosion (see, for example, Patent Document 2).

特開2012−009178号公報JP 2012-009178 A 特開2012−190635号公報JP 2012-190635 A

このような水分等の侵入を防ぐ目的で、断面中空形状で一端側が封止された圧着部を有する端子が検討されている。断面中空形状の圧着部を有する端子では、被覆導線を配置した圧着部をU字型形状等に変形させて、圧着部の断面の中心から外側に向かって導線を圧縮流動させることにより、端子と被覆導線とを圧着させる。また、被覆部が圧着部で圧着されることで、中空部に水が浸入することが防止される。ここで、導線がアルミ製である場合、圧着部にセレーションを設けることで、導線の抜けが防止されるだけでなく、アルミの酸化被膜を破壊する効果も得ることができる。   For the purpose of preventing such intrusion of moisture and the like, a terminal having a crimped portion having a hollow cross section and sealed at one end side has been studied. In a terminal having a crimp section with a hollow cross-section, the crimp section where the coated conductor is disposed is deformed into a U-shape or the like, and the conductor is compressed and flowed outward from the center of the cross section of the crimp section. Crimp the coated conductor. Moreover, it is prevented that water penetrate | invades into a hollow part because a coating | coated part is crimped | bonded by a crimping | compression-bonding part. Here, when the conducting wire is made of aluminum, by providing serrations in the crimping part, not only the conducting wire is prevented from coming off but also an effect of destroying the aluminum oxide film can be obtained.

しかしながら、断面中空形状の圧着部を有する端子を用いる場合、圧縮流動の初期において、圧着部の断面の中央部付近での導線と圧着部との摩擦が大きいと、導線が外側に流れ難くなり、導線と圧着部との接触面において、良好な接触圧力分布を得ることが困難となる。   However, when using a terminal having a crimped portion with a hollow cross section, at the initial stage of compression flow, if the friction between the lead wire and the crimped portion near the center of the cross section of the crimped portion is large, the lead wire is difficult to flow outside, It becomes difficult to obtain a good contact pressure distribution on the contact surface between the conducting wire and the crimping portion.

本発明は、前述した問題点に鑑みてなされたもので、その目的とすることは、断面中空形状の圧着部を有し、圧着部の断面の中心から外側に向かって導線を確実に流動させることにより、導線と圧着部との接触面において良好な接触圧力分布を得ることができるワイヤハーネスおよび端子を提供することである。   The present invention has been made in view of the above-described problems, and an object of the present invention is to have a crimp section having a hollow cross section and to reliably flow the lead wire from the center of the section of the crimp section toward the outside. By this, it is providing the wire harness and terminal which can obtain favorable contact pressure distribution in the contact surface of a conducting wire and a crimping | compression-bonding part.

前述した目的を達成するために、第1の発明は、被覆導線と端子とが接続されるワイヤハーネスであって、前記端子は、被覆線を圧着する被覆線圧着部と前記被覆線から露出する導線を圧着する導線圧着部とからなる筒状の圧着部と、端子本体とを有し、前記筒状の圧着部に前記被覆導線を挿入し、前記導線圧着部を変形させて前記導線を圧着させた際に、前記導線圧着部の中央部に前記導線が流動しにくい強圧着領域が形成され、側部に前記強圧着領域よりも前記導線が流動しやすい流動領域が形成され、前記導線圧着部には、周方向に線状の係止部が設けられ、前記圧着部の長手方向における単位長さあたりの係止部の本数である係止部の密度が、前記導線圧着部の周方向の位置によって異なり、前記強圧着領域は、前記導線圧着部の下面側の内周面に高密度の係止部が設けられることにより形成され、前記流動領域は、前記導線圧着部の側面側の内周面に前記下面側の内周面よりも低密度の係止部が設けられることにより形成され、前記導線圧着部の上面側の内周面に、前記下面側の内周面と同等の密度の係止部が設けられることを特徴とするワイヤハーネスである。 In order to achieve the above-described object, the first invention is a wire harness in which a coated conductor and a terminal are connected, and the terminal is exposed from a coated wire crimping portion for crimping the coated wire and the coated wire. It has a cylindrical crimping portion comprising a lead crimping portion for crimping a lead and a terminal body, and the coated lead is inserted into the cylindrical crimping portion, and the lead crimping portion is deformed to crimp the lead. When this is done, a strong pressure-bonding region in which the conductive wire is less likely to flow is formed in the central portion of the conductive wire pressure-bonding portion, and a flow region in which the conductive wire flows more easily than the strong pressure-bonding region is formed in the side portion. The portion is provided with a linear locking portion in the circumferential direction, and the density of the locking portion, which is the number of locking portions per unit length in the longitudinal direction of the crimping portion, is the circumferential direction of the conductor crimping portion. The strong crimping region is different from the position of the conductor crimping part. The flow region is formed on the inner peripheral surface on the side surface side of the wire crimping portion with a lower density than the inner peripheral surface on the lower surface side. is formed by the retaining portion is provided, on the inner peripheral surface of the upper surface of the conductor crimping portion, the wire harness, wherein Rukoto engaging portion is provided in a density equivalent to the inner circumferential surface of the lower surface is there.

また、前記線状の係止部は、連続した溝、または、複数の凹部を所定の間隔で連続配置したものであることが望ましい。   Moreover, it is desirable that the linear locking portion is a continuous groove or a plurality of concave portions continuously arranged at a predetermined interval.

第1の発明によれば、断面中空形状の導線圧着部を、例えば下面側が凸となるような形状に変形させて導線を圧着させる際に、導線圧着部の中央部に導線が流動しにくい強圧着領域を形成し、側部に強圧着領域よりも導線が流動しやすい流動領域を形成することにより、圧着部の断面の中心から外側に向かって導線を確実に流動させることができる。また、導線圧着部の下面側の内周面に高密度の係止部を設け、側面側の内周面に下面側の内周面よりも低密度の係止部を設けることにより、強圧着領域および流動領域を適切な位置に形成することができる。   According to the first aspect of the present invention, when the lead wire crimping portion having a hollow cross section is deformed into a shape having a convex bottom surface, for example, and the lead wire is crimped, the strong pressure at which the lead wire does not easily flow into the central portion of the lead wire crimping portion. By forming the adhesion region and forming the flow region in the side portion where the conductive wire flows more easily than the strong pressure-bonding region, the conductive wire can surely flow outward from the center of the cross section of the pressure-bonding portion. In addition, by providing a high-density locking portion on the inner peripheral surface on the lower surface side of the conductor crimping portion and providing a lower-density locking portion on the inner peripheral surface on the side surface side than the inner peripheral surface on the lower surface side, The region and the flow region can be formed at appropriate positions.

端子本体と筒状の圧着部からなり、被覆導線に接続される端子であって、前記圧着部は、被覆線を圧着する被覆線圧着部と、前記被覆線から露出する導線を圧着する導線圧着部とからなり、前記導線圧着部には、周方向に線状の係止部が設けられ、前記圧着部の長手方向における単位長さあたりの係止部の本数である係止部の密度が、前記導線圧着部の周方向の位置によって異なり、前記導線圧着部の下面側の内周面に係止部が高密度に配置され、側面側の内周面に係止部が前記下面側の内周面よりも低密度に配置され、前記導線圧着部の上面側の内周面に、係止部が前記下面側の内周面と同等の密度に配置されることを特徴とする端子である。 A terminal consisting of a terminal main body and a cylindrical crimping part, which is a terminal connected to a coated conductor, wherein the crimping part is a coated wire crimping part that crimps a coated wire and a conductor crimping that crimps a conductor exposed from the coated wire The conductor crimping portion is provided with a linear latching portion in the circumferential direction, and the density of the latching portion is the number of latching portions per unit length in the longitudinal direction of the crimping portion. The engaging portions are arranged at a high density on the inner peripheral surface on the lower surface side of the conductive wire crimping portion, and the engaging portions are disposed on the inner peripheral surface on the side surface side. The terminal is disposed at a lower density than the inner peripheral surface, and the engaging portion is disposed at the same density as the inner peripheral surface on the lower surface side on the inner peripheral surface on the upper surface side of the conductor crimping portion. is there.

前記線状の係止部は、連続した溝、または、複数の凹部を所定の間隔で連続配置したものであることが望ましい。   The linear locking portion is preferably a continuous groove or a plurality of concave portions continuously arranged at a predetermined interval.

第2の発明の端子は、導線圧着部の下面側の内周面に係止部が高密度で配置され、側面側の内周面に係止部が下面側の内周面よりも低密度で配置されているので、断面中空形状の導線圧着部を、例えば圧着部を下面側が凸となるような形状に変形させて導線を圧着させる際に、圧着部の断面の中心から外側に向かって導線を確実に流動させることができる。   In the terminal according to the second aspect of the present invention, the engaging portion is disposed at a high density on the inner peripheral surface on the lower surface side of the conductor crimping portion, and the engaging portion is disposed on the inner peripheral surface on the side surface side with a lower density than the inner peripheral surface on the lower surface side. When the lead wire crimping portion having a hollow cross section is deformed into a shape such that the lower surface side is convex and the lead wire is crimped, for example, from the center of the cross section of the crimp portion toward the outside The conducting wire can flow reliably.

本発明によれば、圧着部の断面の中心から外側に向かって導線を確実に流動させることにより、導線と圧着部との接触面において良好な接触圧力分布を得ることができるワイヤハーネスおよび端子を提供できる。   According to the present invention, there is provided a wire harness and a terminal capable of obtaining a good contact pressure distribution on the contact surface between the conducting wire and the crimping portion by surely flowing the conducting wire from the center of the cross section of the crimping portion toward the outside. Can be provided.

端子1の一部を展開した状態を示す図The figure which shows the state which expanded a part of terminal 1 端子1および被覆導線23を示す図The figure which shows the terminal 1 and the covering conducting wire 23 ワイヤハーネス61を形成する工程を示す図The figure which shows the process of forming the wire harness 61 他の圧着部5aの展開図Development view of other crimping part 5a ワイヤハーネスを形成する工程を示す図The figure which shows the process of forming a wire harness 端子1bの一部を展開した状態を示す図The figure which shows the state which expanded some terminals 1b 圧着部5cの周方向断面図Cross section in the circumferential direction of the crimping part 5c

以下、図面に基づいて、本発明の第1の実施の形態について詳細に説明する。図1は、端子1の一部を展開した状態を示す図である。図2は、端子1および被覆導線23を示す図である。   Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram illustrating a state in which a part of the terminal 1 is developed. FIG. 2 is a diagram showing the terminal 1 and the covered conductor 23.

図1、図2に示すように、端子1は、端子本体3と圧着部5とからなる。端子1は、銅製である。端子本体3は、所定の形状の板材を、図1に示すように、断面が矩形の筒体に形成したものである。端子本体3は、圧着部5と反対側の端部に、板材を矩形の筒体内に折り込んで形成される端子接触部11を有する。   As shown in FIGS. 1 and 2, the terminal 1 includes a terminal body 3 and a crimping portion 5. The terminal 1 is made of copper. The terminal body 3 is formed by forming a plate material having a predetermined shape into a cylindrical body having a rectangular cross section as shown in FIG. The terminal body 3 has a terminal contact portion 11 formed by folding a plate material into a rectangular cylinder at the end opposite to the crimping portion 5.

圧着部5は、図1に示す形状の板材を、図2に示すように、断面が円形の筒体となるように丸め、側縁部19(図1)同士をレーザ溶接等による溶接部21により一体化することにより形成される。圧着部5は、被覆線圧着部9、導線圧着部7からなる。被覆線圧着部9は、図2に示す被覆導線23の被覆線27を圧着する。導線圧着部7は、被覆線27の被覆29を剥がして露出させた導線25を圧着する。   As shown in FIG. 2, the crimping portion 5 is formed by rounding the plate material having the shape shown in FIG. 1 so as to form a cylindrical body having a circular cross section, and the side edge portions 19 (FIG. 1) are welded by laser welding or the like 21. It is formed by integrating. The crimp portion 5 includes a covered wire crimp portion 9 and a conductive wire crimp portion 7. The covered wire crimping portion 9 crimps the covered wire 27 of the covered conductor 23 shown in FIG. The lead wire crimping portion 7 crimps the lead wire 25 exposed by peeling off the coating 29 of the covered wire 27.

図1に示すように、導線圧着部7には、長手方向に所定の間隔をおいて、線状の係止部であるセレーション13が設けられる。セレーション13は、内面凹状に連続した溝である。圧着部5の長手方向における単位長さあたりのセレーション13の本数であるセレーションの密度は、導線圧着部7の位置によって異なる。展開した状態の導線圧着部7において、中央部は、セレーション13aが密に配置される高密度部15である。中央部の両外側部は、セレーション13bが中央部よりも疎に配置される低密度部17である。   As shown in FIG. 1, the lead wire crimping portion 7 is provided with serrations 13 that are linear locking portions at a predetermined interval in the longitudinal direction. The serrations 13 are grooves that are continuous in a concave shape on the inner surface. The density of serrations, which is the number of serrations 13 per unit length in the longitudinal direction of the crimp part 5, varies depending on the position of the conductor crimp part 7. In the lead wire crimping part 7 in the developed state, the central part is a high density part 15 in which serrations 13a are densely arranged. Both outer side portions of the central portion are low density portions 17 in which serrations 13b are arranged sparser than the central portion.

図3は、ワイヤハーネス61を形成する工程を示す図である。図3(a)は、筒状の圧着部5に被覆導線23を挿入した状態を示す図である。図3(a)では、圧着部5の一部を長手方向に切断して図示している。ワイヤハーネス61を形成するには、まず、図3(a)に示すように、筒状の圧着部5に被覆導線23を挿入し、被覆導線23の導線25を導線圧着部7内に配置する。また、被覆線27を被覆線圧着部9内に配置する。   FIG. 3 is a diagram illustrating a process of forming the wire harness 61. FIG. 3A is a view showing a state in which the covered conductor 23 is inserted into the cylindrical crimp portion 5. In Fig.3 (a), a part of crimping | compression-bonding part 5 is cut | disconnected and shown in the longitudinal direction. In order to form the wire harness 61, first, as shown in FIG. 3A, the covered conducting wire 23 is inserted into the tubular crimping portion 5, and the conducting wire 25 of the covered conducting wire 23 is disposed in the conducting wire crimping portion 7. . Further, the covered wire 27 is disposed in the covered wire crimping portion 9.

図3(b)は、圧着刃型に圧着部5を設置した状態を示す図である。図3(b)は、導線圧着部7の位置での断面を図示している。図3(b)に示す工程では、下側圧着刃型31に圧着部5を設置する。圧着部5は、溶接部21が上側圧着刃型33と対向するように設置される。   FIG. 3B is a diagram showing a state where the crimping part 5 is installed in the crimping blade mold. FIG. 3B illustrates a cross-section at the position of the conductor crimping portion 7. In the step shown in FIG. 3 (b), the crimping part 5 is installed on the lower crimping blade mold 31. The crimping part 5 is installed so that the welding part 21 faces the upper crimping blade mold 33.

なお、上述したセレーション13は、図3に示す状態では、筒状の導線圧着部7の周方向に配置されることとなる。また、セレーション13の密度は、導線圧着部7の周方向の位置によって異なるものとなる。図3(b)に示す導線圧着部7の下面側53には、図1に示す高密度部15が位置するため、下面側53の内周面57には、セレーション13a(図1)が高密度で配置される。図3(b)に示す導線圧着部7の側面側55には、図1に示す低密度部17が位置するため、側面側55の内周面57には、セレーション13b(図1)が下面側53よりも低密度で配置される。   In addition, the serration 13 mentioned above will be arrange | positioned in the circumferential direction of the cylindrical conducting wire crimping part 7 in the state shown in FIG. Further, the density of the serration 13 varies depending on the position in the circumferential direction of the conductor crimping portion 7. Since the high density portion 15 shown in FIG. 1 is located on the lower surface side 53 of the lead wire crimping portion 7 shown in FIG. 3B, the serration 13a (FIG. 1) is high on the inner peripheral surface 57 of the lower surface side 53. Arranged in density. Since the low density portion 17 shown in FIG. 1 is located on the side surface 55 of the conductor crimping portion 7 shown in FIG. 3B, the serration 13b (FIG. 1) is provided on the inner peripheral surface 57 of the side surface 55. Arranged at a lower density than side 53.

図3(c)は、導線圧着部7を変形させた状態を示す図である。図3(c)に示す工程では、上側圧着刃型33と下側圧着刃型31とで圧着部5を挟み込み、導線圧着部7を下面側が凸となるようなU字型形状に変形させて導線25を圧着させる。このとき、導線圧着部7の下面側53の内周面57(図3(b))には高密度のセレーションが設けられている。導線25は、セレーションに押し込まれるようにして流動するため、中央部35では導線25がセレーションに詰まり、流動性が悪化する。このため、導線圧着部7を下面側が凸となるようなU字型形状に変形させる際に通常よりも強い圧着力が必要となる。セレーション13aが高密度で配置された部分は、相対的に断面変形が大きい高圧着部となり、導線圧着部7の周方向断面の中央部35に導線25が流動しにくい強圧着領域が形成される。また、導線圧着部7の側面側55の内周面57(図3(b))には低密度のセレーションが設けられているので、導線圧着部7の周方向断面の側部37に強圧着領域よりも導線25が流動しやすい流動領域が形成される。これにより、導線圧着部7において、断面の中心から外側に向かって、すなわち、中央部35から側部37に向かって導線25を確実に流動させ、導線圧着部7内に導線25を適切に配置することができる。   FIG. 3C is a diagram showing a state where the conductor crimping portion 7 is deformed. In the step shown in FIG. 3C, the crimping portion 5 is sandwiched between the upper crimping blade die 33 and the lower crimping blade die 31, and the lead wire crimping portion 7 is deformed into a U-shape having a convex bottom surface. The conducting wire 25 is crimped. At this time, high-density serrations are provided on the inner peripheral surface 57 (FIG. 3B) on the lower surface side 53 of the conductor crimping portion 7. Since the conducting wire 25 flows so as to be pushed into the serration, the conducting wire 25 is clogged with the serration in the central portion 35, and the fluidity deteriorates. For this reason, when deform | transforming the conducting-wire crimping | compression-bonding part 7 into a U-shape where a lower surface side becomes convex, stronger crimping force than usual is required. The portion where the serrations 13a are arranged at a high density becomes a high pressure bonding portion with relatively large cross-sectional deformation, and a strong pressure bonding region in which the conductive wire 25 does not easily flow is formed in the central portion 35 of the circumferential cross section of the conductive wire pressure bonding portion 7. . Moreover, since the low density serration is provided in the inner peripheral surface 57 (FIG. 3B) on the side surface side 55 of the conductor crimping portion 7, it is strongly crimped to the side portion 37 of the circumferential cross section of the conductor crimping portion 7. A flow region in which the conductive wire 25 flows more easily than the region is formed. Thereby, in the conducting wire crimping portion 7, the conducting wire 25 is reliably flowed from the center of the cross section toward the outside, that is, from the central portion 35 toward the side portion 37, and the conducting wire 25 is appropriately disposed in the conducting wire crimping portion 7. can do.

図3(d)は、ワイヤハーネス61を示す図である。図3(d)では、圧着部5の一部を長手方向に切断して図示している。図3(d)に示す工程では、圧着刃型から圧着部5を取り外し、ワイヤハーネス61を完成する。ワイヤハーネス61では、導線圧着部7内に導線25が適切に配置されているので、導線25と圧着部5との接触面において良好な接触圧力分布を得ることができる。   FIG. 3D shows the wire harness 61. In FIG.3 (d), a part of crimping | compression-bonding part 5 is cut | disconnected and shown in the longitudinal direction. In the step shown in FIG. 3D, the crimping part 5 is removed from the crimping blade mold, and the wire harness 61 is completed. In the wire harness 61, since the conducting wire 25 is appropriately disposed in the conducting wire crimping portion 7, a good contact pressure distribution can be obtained on the contact surface between the conducting wire 25 and the crimping portion 5.

このように、第1の実施の形態では、導線圧着部7の下面側53の内周面57にセレーション13が高密度で配置され、側面側55の内周面57にセレーション13が下面側53よりも低密度で配置されている端子1を用いる。これにより、導線圧着部7を下面側が凸となるようなU字型形状に変形させて導線25を圧着させる際に、導線圧着部7の中央部35に導線25が流動しにくい強圧着領域を形成し、側部37に強圧着領域よりも導線25が流動しやすい流動領域を形成することができ、導線圧着部7の断面の中心から外側に向かって導線25を確実に流動させることができる。特に、このような効果は、導線25がアルミニウム製であることで発揮される。   As described above, in the first embodiment, the serrations 13 are arranged at high density on the inner peripheral surface 57 on the lower surface side 53 of the conductor crimping portion 7, and the serrations 13 are disposed on the inner peripheral surface 57 on the side surface side 55. The terminal 1 arranged at a lower density than that is used. As a result, when the lead wire crimping portion 7 is deformed into a U-shape having a convex bottom surface and the lead wire 25 is crimped, a strong crimp region where the lead wire 25 is difficult to flow is formed in the central portion 35 of the lead wire crimping portion 7. Thus, a flow region in which the conductive wire 25 can flow more easily than the strong crimping region can be formed on the side portion 37, and the conductive wire 25 can be reliably flowed outward from the center of the cross section of the conductive wire crimping portion 7. . In particular, such an effect is exhibited when the conducting wire 25 is made of aluminum.

なお、図2、図3(a)、図3(d)では、圧着部5の端子本体3側の端部63の断面を導線圧着部7の断面と同じ形状で図示したが、端部63の形状はこれに限らない。端部63は、水分等の侵入による導線25の腐食を防ぐために、開口が塞がるように潰して封止することが望ましい。   2, 3 </ b> A, and 3 </ b> D, the cross section of the end portion 63 on the terminal body 3 side of the crimp portion 5 is illustrated in the same shape as the cross section of the conductor crimp portion 7. The shape is not limited to this. The end portion 63 is preferably crushed and sealed so that the opening is closed in order to prevent corrosion of the conducting wire 25 due to intrusion of moisture or the like.

次に、第2の実施の形態について説明する。図4は、他の圧着部5aの展開図である。第2の実施の形態では、図1に示す圧着部5を有する端子1のかわりに、図4に示す圧着部5aを有する端子を用いる。図4に示すように、圧着部5aは、被覆線圧着部9、導線圧着部7aからなる。   Next, a second embodiment will be described. FIG. 4 is a development view of another crimping part 5a. In 2nd Embodiment, the terminal which has the crimping | compression-bonding part 5a shown in FIG. 4 is used instead of the terminal 1 which has the crimping | compression-bonding part 5 shown in FIG. As shown in FIG. 4, the crimping part 5a includes a covered wire crimping part 9 and a conductor crimping part 7a.

導線圧着部7aには、長手方向に所定の間隔をおいて線状の係止部であるセレーション39が設けられる。セレーション39は、内面凹状に連続した溝である。圧着部5aの長手方向における単位長さあたりのセレーション39の本数であるセレーションの密度は、導線圧着部7aの位置によって異なる。展開した状態の導線圧着部7aにおいて、中央部は、セレーション39aが密に配置される高密度部41である。中央部の両外側部は、セレーション39bが高密度部41よりも疎に配置される低密度部43である。両外側のさらに外側の部分は、セレーション39cが高密度部41と同等に密に配置される高密度部45である。   The conductive wire crimping portion 7a is provided with a serration 39 which is a linear locking portion at a predetermined interval in the longitudinal direction. The serration 39 is a groove that is continuous in a concave shape on the inner surface. The density of serrations, which is the number of serrations 39 per unit length in the longitudinal direction of the crimping part 5a, varies depending on the position of the conductor crimping part 7a. In the expanded state of the conductor crimping portion 7a, the central portion is a high-density portion 41 in which serrations 39a are densely arranged. Both outer side portions of the central portion are low density portions 43 in which serrations 39b are arranged more sparsely than the high density portions 41. The outer portions of both outer sides are high-density portions 45 in which serrations 39c are arranged as densely as the high-density portions 41.

図5は、図4に示す圧着部5aを有する端子を用いてワイヤハーネスを形成する工程を示す図である。図5(a)は、圧着刃型に圧着部5aを設置した状態を示す図である。図5(a)は、導線圧着部7aにおける断面を図示している。ワイヤハーネスを形成するには、まず、筒状の圧着部5aに被覆導線を挿入し、被覆導線の導線25を導線圧着部7a内に配置する。また、被覆線を被覆線圧着部9内に配置する。そして、図5(a)に示すように、下側圧着刃型31に圧着部5aを設置する。圧着部5aは、溶接部21が上側圧着刃型33と対向するように設置される。   FIG. 5 is a diagram showing a process of forming a wire harness using a terminal having the crimping part 5a shown in FIG. Fig.5 (a) is a figure which shows the state which installed the crimping | compression-bonding part 5a in the crimping blade type | mold. Fig.5 (a) has shown the cross section in the conducting wire crimping | compression-bonding part 7a. In order to form the wire harness, first, a covered conductor is inserted into the cylindrical crimp part 5a, and the conductor 25 of the covered conductor is placed in the conductor crimp part 7a. Further, the covered wire is disposed in the covered wire crimping portion 9. And as shown to Fig.5 (a), the crimping | compression-bonding part 5a is installed in the lower crimping blade type | mold 31. FIG. The crimping part 5 a is installed so that the welding part 21 faces the upper crimping blade mold 33.

なお、上述したセレーション39(図4)は、図5に示す状態では、筒状の導線圧着部7aの周方向に配置されることとなる。また、セレーション39の密度は、導線圧着部7aの周方向の位置によって異なるものとなる。図5(a)に示す導線圧着部7aの下面側53には、図4に示す高密度部41が位置するため、下面側53の内周面57には、セレーション39a(図4)が高密度で配置される。図5(a)に示す導線圧着部7aの側面側55には、図4に示す低密度部43が位置するため、側面側55の内周面57には、セレーション39b(図4)が下面側53よりも低密度で配置される。図5(a)に示す導線圧着部7aの上面側59の内周面57には、図4に示す高密度部45が位置するため、上面側59の内周面57には、セレーション39c(図4)が下面側53と同等の高密度で配置される。   In addition, the serration 39 (FIG. 4) mentioned above will be arrange | positioned in the circumferential direction of the cylindrical conducting wire crimping part 7a in the state shown in FIG. Further, the density of the serration 39 varies depending on the position in the circumferential direction of the conductor crimping portion 7a. Since the high-density portion 41 shown in FIG. 4 is located on the lower surface side 53 of the conductor crimping portion 7a shown in FIG. 5A, the serration 39a (FIG. 4) is high on the inner peripheral surface 57 of the lower surface side 53. Arranged in density. Since the low density portion 43 shown in FIG. 4 is located on the side surface 55 of the conductor crimping portion 7a shown in FIG. 5A, the serration 39b (FIG. 4) is provided on the inner peripheral surface 57 of the side surface 55. Arranged at a lower density than side 53. Since the high density portion 45 shown in FIG. 4 is located on the inner peripheral surface 57 of the upper surface side 59 of the conductor crimping portion 7a shown in FIG. 5A, the serration 39c ( 4) is arranged at the same high density as the lower surface side 53. FIG.

図5(b)は、導線圧着部7aを変形させた状態を示す図である。図5(b)に示す工程では、上側圧着刃型33と下側圧着刃型31とで圧着部5aを挟み込み、導線圧着部7aを下面側が凸となるようなU字型形状に変形させて導線25を圧着させる。このとき、導線圧着部7aの下面側53および上面側59の内周面57(図5(a))には高密度でセレーションが設けられている。導線25は、セレーションに押し込まれるようにして流動するため、中央部47では導線25がセレーションに詰まり、流動性が悪化する。このため、導線圧着部7aを下面側が凸となるようなU字型形状に変形させる際に通常よりも強い圧着力が必要となる。セレーション13aが高密度で配置された部分は、相対的に断面変形が大きい高圧着部となり、導線圧着部7aの周方向断面の中央部47に導線25が流動しにくい強圧着領域が形成される。また、導線圧着部7aの側面側55の内周面57(図5(a))には低密度でセレーションが設けられているので、導線圧着部7aの周方向断面の側部49に強圧着領域よりも導線25が流動しやすい流動領域が形成される。これにより、導線圧着部7aにおいて、断面の中心から外側に向かって、すなわち中央部47から側部49に向かって導線25を確実に流動させ、導線圧着部7a内に導線25を適切に配置することができる。   FIG.5 (b) is a figure which shows the state which deform | transformed the conducting wire crimping | compression-bonding part 7a. In the step shown in FIG. 5B, the crimping portion 5a is sandwiched between the upper crimping blade die 33 and the lower crimping blade die 31, and the conductive wire crimping portion 7a is deformed into a U-shape having a convex bottom surface. The conducting wire 25 is crimped. At this time, serrations are provided at high density on the lower surface side 53 and the inner peripheral surface 57 (FIG. 5A) on the upper surface side 59 of the conductor crimping portion 7a. Since the conducting wire 25 flows so as to be pushed into the serration, the conducting wire 25 is clogged with the serration in the central portion 47, and the fluidity is deteriorated. For this reason, when deform | transforming the conducting-wire crimping | compression-bonding part 7a into a U-shape where a lower surface side becomes convex, stronger crimping force than usual is required. The portion where the serrations 13a are arranged at a high density becomes a high pressure bonding portion with relatively large cross-sectional deformation, and a strong pressure bonding region in which the conductive wire 25 hardly flows is formed at the central portion 47 of the circumferential cross section of the conductive wire pressure bonding portion 7a. . Further, since serrations are provided at a low density on the inner peripheral surface 57 (FIG. 5A) on the side surface side 55 of the lead wire crimping portion 7a, it is strongly crimped to the side portion 49 of the circumferential cross section of the lead wire crimping portion 7a. A flow region in which the conductive wire 25 flows more easily than the region is formed. Thereby, in the conducting wire crimping portion 7a, the conducting wire 25 is surely flowed from the center of the cross section to the outside, that is, from the central portion 47 to the side portion 49, and the conducting wire 25 is appropriately disposed in the conducting wire crimping portion 7a. be able to.

図5(b)に示す工程の後、圧着刃型から圧着部5aを取り外し、ワイヤハーネスを完成する。ワイヤハーネスでは、導線圧着部7a内に導線25が適切に配置されているので、導線25と圧着部5aとの接触面において良好な接触圧力分布を得ることができる。   After the step shown in FIG. 5B, the crimping part 5a is removed from the crimping blade mold to complete the wire harness. In the wire harness, since the conducting wire 25 is appropriately arranged in the conducting wire crimping portion 7a, a good contact pressure distribution can be obtained on the contact surface between the conducting wire 25 and the crimping portion 5a.

このように、第2の実施の形態では、導線圧着部7aの下面側53および上面側59の内周面57にセレーション13が高密度で配置され、側面側55の内周面57にセレーション13が下面側53よりも低密度で配置されている端子を用いる。これにより、導線圧着部7aを下面側が凸となるようなU字型形状に変形させて導線25を圧着させる際に、導線圧着部7aの中央部47に導線25が流動しにくい強圧着領域を形成し、側部49に強圧着領域よりも導線25が流動しやすい流動領域を形成することができ、導線圧着部7aの断面の中心から外側に向かって導線25を確実に流動させることができる。   Thus, in the second embodiment, the serrations 13 are arranged at high density on the inner peripheral surface 57 of the lower surface side 53 and the upper surface side 59 of the conductor crimping portion 7a, and the serrations 13 are disposed on the inner peripheral surface 57 of the side surface side 55. Are used at a lower density than the lower surface side 53. As a result, when the lead wire crimping portion 7a is deformed into a U-shape that has a convex bottom surface and the lead wire 25 is crimped, a strong pressure-bonding region in which the lead wire 25 is difficult to flow is formed at the central portion 47 of the lead wire crimping portion 7a. Thus, a flow region in which the conductive wire 25 can flow more easily than the strong crimping region can be formed in the side portion 49, and the conductive wire 25 can be reliably flowed outward from the center of the cross section of the conductive wire crimping portion 7a. .

なお、圧着部5aの端子本体側の端部は、第1の実施の形態における端子1の圧着部5の端部63と同様に、水分等の侵入による導線25の腐食を防ぐために、開口が塞がるように潰してレーザ溶接等で封止することが望ましい。   Note that the end of the crimping part 5a on the terminal main body side has an opening in order to prevent corrosion of the conductor 25 due to intrusion of moisture or the like, similarly to the end 63 of the crimping part 5 of the terminal 1 in the first embodiment. It is desirable to crush it so as to close it and seal it with laser welding or the like.

第1および第2の実施の形態では、圧着部の一方の端部63を溶接で封止することが望ましい旨を記載したが、本発明では、一方の端部63が封止されていても、被覆導線23が挿入される範囲の圧着部の側縁部19同士の間に隙間が形成されていない場合は、「筒状」の圧着部と称する。   In the first and second embodiments, it has been described that it is desirable to seal one end 63 of the crimping portion by welding. However, in the present invention, even if one end 63 is sealed. When no gap is formed between the side edge portions 19 of the crimping portion in the range where the covered conductor 23 is inserted, it is referred to as a “tubular” crimping portion.

第1および第2の実施の形態では、端子の周方向の位置によってセレーションの密度を変えることによって強圧着領域と流動領域とを形成したが、セレーションの深さを変えることよっても同様の効果が得られる。例えば、強圧着領域のセレーションを深くし、流動領域のセレーションを相対的に浅くしてもよい。   In the first and second embodiments, the strong pressure-bonding region and the flow region are formed by changing the density of the serration according to the circumferential position of the terminal. However, the same effect can be obtained by changing the depth of the serration. can get. For example, the serration in the strong pressure bonding region may be deepened and the serration in the flow region may be relatively shallow.

以上、添付図を参照しながら、本発明の実施の形態を説明したが、本発明の技術的範囲は、前述した実施の形態に左右されない。当業者であれば、特許請求の範囲に記載された技術的思想の範疇内において各種の変更例または修正例に想到し得ることは明らかであり、それらについても当然に本発明の技術的範囲に属するものと了解される。   As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

例えば、本発明における線状の係止部は、連続した溝であるセレーションに限らない。図6は、端子1bの一部を展開した状態を示す図である。図6に示す端子1bは、図1に示す端子1の圧着部5の代わりに、圧着部5bを有する。図6に示すように、圧着部5bは、被覆線圧着部9、導線圧着部7bからなり、導線圧着部7bには、図1に示す導線圧着部7のセレーション13a、13bの代わりに、係止部65a、65bが設けられる。係止部65は、複数の凹部67を所定の間隔で線状に連続配置したものである。なお、図6では、凹部67の平面形状を円形としたが、矩形や平行四辺形等の他の形状でもよい。   For example, the linear locking portion in the present invention is not limited to serrations that are continuous grooves. FIG. 6 is a diagram illustrating a state in which a part of the terminal 1b is developed. A terminal 1b shown in FIG. 6 has a crimping part 5b instead of the crimping part 5 of the terminal 1 shown in FIG. As shown in FIG. 6, the crimping portion 5b is composed of a covered wire crimping portion 9 and a conductor crimping portion 7b. The conductor crimping portion 7b is connected to the serrations 13a and 13b of the conductor crimping portion 7 shown in FIG. Stop portions 65a and 65b are provided. The locking portion 65 is formed by continuously arranging a plurality of concave portions 67 in a line at a predetermined interval. In addition, in FIG. 6, although the planar shape of the recessed part 67 was circular, other shapes, such as a rectangle and a parallelogram, may be sufficient.

また、本発明では、圧着部を、図3(c)に示す断面形状ではなく、他の断面形状となるように圧着してもよい。図7は、圧着部5cの周方向断面図を示す。図7に示す圧着部5cの導線圧着部7cは、圧着刃型によって矢印Aおよび矢印Bに示す4か所から圧着され、下面側が凸となるような形状に変形される。導線圧着部7cでは、圧着によって、中央部77に導線25が流動しにくい強圧着領域が形成され、側部79に強圧着領域よりも導線25が流動しやすい流動領域が形成される。圧着によって、導線25は、導線圧着部7cの断面の中心から外側に向かって流動する。   In the present invention, the crimping portion may be crimped so as to have a different cross-sectional shape instead of the cross-sectional shape shown in FIG. FIG. 7 shows a circumferential cross-sectional view of the crimping part 5c. The lead wire crimping portion 7c of the crimping portion 5c shown in FIG. 7 is crimped from four locations indicated by arrows A and B by a crimping blade mold, and deformed into a shape in which the lower surface side is convex. In the lead wire crimping portion 7c, a strong pressure-bonding region in which the lead wire 25 is less likely to flow is formed in the central portion 77, and a flow region in which the lead wire 25 is more likely to flow than the strong pressure-bonding region is formed in the side portion 79. By crimping, the conducting wire 25 flows outward from the center of the cross section of the conducting wire crimping portion 7c.

図7に示す導線圧着部7cは、上側が中央近傍の矢印Aに示す2か所と、下側が側端部近傍の矢印Bに示す2か所から押圧されるので、圧着時に端子の回転を防ぐことができる。また、導線圧着部7cは、下面が平坦となるので、圧着高さの測定が容易となる。   The lead wire crimping portion 7c shown in FIG. 7 is pressed from the two locations indicated by the arrow A near the center on the upper side and the two locations indicated by the arrow B near the side end on the upper side. Can be prevented. Moreover, since the lower surface of the conducting wire crimping portion 7c is flat, it is easy to measure the crimping height.

1、1b………端子
3………端子本体
5、5a、5b………圧着部
7、7a、7b………導線圧着部
9………被覆線圧着部
13、13a、13b、39、39a、39b、39c………セレーション
15、41、45………高密度部
17、43………低密度部
21………溶接部
23………被覆導線
25………導線
27………被覆線
31………下側圧着刃型
33………上側圧着刃型
35、47、77………中央部
37、49、79………側部
51………上部
53………下面側
55………側面側
57………内周面
59………上面側
61………ワイヤハーネス
63………端部
65、65a、65b………係止部
67………凹部
1, 1 b ...... Terminal 3 ...... Terminal body 5, 5 a, 5 b ...... Crimp part 7, 7 a, 7 b ...... Conductor crimp part 9 ...... Covered wire crimp part 13, 13 a, 13 b, 39, 39a, 39b, 39c ......... Serrations 15, 41, 45 ... ... High density part 17, 43 ... ... Low density part 21 ... ... Welded part 23 ... ... Coated conductor 25 ... ... Conductor 27 ... ... Covered wire 31 ......... Lower crimp blade type 33 ......... Upper crimp blade type 35, 47, 77 ......... Center part 37, 49, 79 ......... Side part 51 ......... Upper part 53 ......... Lower side 55 ......... Side side 57 ......... Inner peripheral surface 59 ......... Top side 61 ......... Wire harness 63 ......... Ends 65, 65a, 65b ......... Locking part 67 ......... Recess

Claims (2)

被覆導線と端子とが接続されるワイヤハーネスであって、
前記端子は、被覆線を圧着する被覆線圧着部と前記被覆線から露出する導線を圧着する導線圧着部とからなる筒状の圧着部と、端子本体とを有し、
前記筒状の圧着部に前記被覆導線を挿入し、前記導線圧着部を変形させて前記導線を圧着させた際に、前記導線圧着部の中央部に前記導線が流動しにくい強圧着領域が形成され、側部に前記強圧着領域よりも前記導線が流動しやすい流動領域が形成され、
前記導線圧着部には、周方向に線状の係止部が設けられ、
前記圧着部の長手方向における単位長さあたりの係止部の本数である係止部の密度が、前記導線圧着部の周方向の位置によって異なり、
前記強圧着領域は、前記導線圧着部の下面側の内周面に高密度の係止部が設けられることにより形成され、
前記流動領域は、前記導線圧着部の側面側の内周面に前記下面側の内周面よりも低密度の係止部が設けられることにより形成され、
前記導線圧着部の上面側の内周面に、前記下面側の内周面と同等の密度の係止部が設けられることを特徴とするワイヤハーネス。
A wire harness in which a coated conductor and a terminal are connected,
The terminal includes a tubular crimping portion including a coated wire crimping portion that crimps a coated wire and a conductive wire crimping portion that crimps a conductive wire exposed from the coated wire, and a terminal body.
When the covered conducting wire is inserted into the cylindrical crimping portion and the conducting wire crimping portion is deformed to crimp the conducting wire, a strong crimping region in which the conducting wire is difficult to flow is formed at the central portion of the conducting wire crimping portion. A flow region where the conductive wire is more likely to flow than the strong pressure-bonding region is formed on the side,
The lead wire crimping portion is provided with a linear locking portion in the circumferential direction,
The density of the locking portion, which is the number of locking portions per unit length in the longitudinal direction of the crimping portion, varies depending on the circumferential position of the conductor crimping portion,
The strong pressure-bonding region is formed by providing a high-density locking portion on the inner peripheral surface on the lower surface side of the conductor crimping portion,
The flow region is formed by providing a locking portion having a lower density than the inner peripheral surface on the lower surface side on the inner peripheral surface on the side surface side of the conductor crimping portion,
A wire harness , wherein a locking portion having a density equivalent to that of the inner peripheral surface on the lower surface side is provided on an inner peripheral surface on the upper surface side of the conductor crimping portion .
端子本体と筒状の圧着部からなり、被覆導線に接続される端子であって、
前記圧着部は、被覆線を圧着する被覆線圧着部と、前記被覆線から露出する導線を圧着する導線圧着部とからなり、
前記導線圧着部には、周方向に線状の係止部が設けられ、
前記圧着部の長手方向における単位長さあたりの係止部の本数である係止部の密度が、前記導線圧着部の周方向の位置によって異なり、
前記導線圧着部の下面側の内周面に係止部が高密度に配置され、側面側の内周面に係止部が前記下面側の内周面よりも低密度に配置され、
前記導線圧着部の上面側の内周面に、係止部が前記下面側の内周面と同等の密度に配置されることを特徴とする端子。
A terminal consisting of a terminal body and a cylindrical crimp part, connected to a coated conductor,
The crimping part is composed of a coated wire crimping part for crimping a coated wire and a conductive wire crimping part for crimping a conductive wire exposed from the coated wire,
The lead wire crimping portion is provided with a linear locking portion in the circumferential direction,
The density of the locking portion, which is the number of locking portions per unit length in the longitudinal direction of the crimping portion, varies depending on the circumferential position of the conductor crimping portion,
The engaging portion is disposed at a high density on the inner peripheral surface on the lower surface side of the conductor crimping portion, and the engaging portion is disposed on the inner peripheral surface on the side surface side at a lower density than the inner peripheral surface on the lower surface side,
The terminal, wherein the engaging portion is disposed on the inner peripheral surface on the upper surface side of the lead wire crimping portion at a density equivalent to the inner peripheral surface on the lower surface side.
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