JP7515155B2 - Crimp connection structure and crimp connection method - Google Patents

Crimp connection structure and crimp connection method Download PDF

Info

Publication number
JP7515155B2
JP7515155B2 JP2020094104A JP2020094104A JP7515155B2 JP 7515155 B2 JP7515155 B2 JP 7515155B2 JP 2020094104 A JP2020094104 A JP 2020094104A JP 2020094104 A JP2020094104 A JP 2020094104A JP 7515155 B2 JP7515155 B2 JP 7515155B2
Authority
JP
Japan
Prior art keywords
crimp
serration member
crimp terminal
electric wire
crimping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2020094104A
Other languages
Japanese (ja)
Other versions
JP2021190289A (en
Inventor
一郎 土屋
滋 西澤
洋平 岡田
Original Assignee
白山商事株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 白山商事株式会社 filed Critical 白山商事株式会社
Priority to JP2020094104A priority Critical patent/JP7515155B2/en
Priority to CN202110257383.0A priority patent/CN113745861A/en
Publication of JP2021190289A publication Critical patent/JP2021190289A/en
Application granted granted Critical
Publication of JP7515155B2 publication Critical patent/JP7515155B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Manufacturing Of Electrical Connectors (AREA)

Description

本発明は、アルミニウムやアルミニウム合金製の導体を有する電線を圧着接続するための圧着接続構造及び圧着接続方法に関する。 The present invention relates to a crimp connection structure and a crimp connection method for crimping electric wires having conductors made of aluminum or aluminum alloy.

この種のアルミニウム電線を接続する圧着端子構造として、特許文献１には、アルミニウム電線用の圧着端子として、アルミニウム電線の導体部に圧着されるバレルの端部に、導体部の保持領域を拡げるために徐々に広げた逃げ部（ベルマウス部）を形成することが開示されている。特許文献１では、このようなベルマウス部を設けることにより、アルミニウム電線の導体部に対する剪断力を低減して導体部の芯線切れを防ぐことが可能となるとしている。 As a crimp terminal structure for connecting this type of aluminum electric wire, Patent Document 1 discloses a crimp terminal for aluminum electric wires in which a gradually widening relief portion (bell-mouth portion) is formed at the end of a barrel that is crimped onto the conductor portion of the aluminum electric wire in order to expand the holding area of the conductor portion. Patent Document 1 claims that by providing such a bell-mouth portion, it is possible to reduce the shear force on the conductor portion of the aluminum electric wire and prevent breakage of the core wire of the conductor portion.

特開２００９－０８７８４８号公報JP 2009-087848 A

しかしながら、特許文献１に記載された圧着端子構造によると、アルミニウム電線に対する剪断力はある程度低減されるが、充分ではなく、バレルの端部で剪断の発生するおそれが多分にあった。特に、アルミニウム電線を圧着端子に圧着接続する場合、良好な電気的接触を維持するためには、かなりの圧縮率（例えば、カシメ部の断面積の圧縮率が６０～８０％）でカシメを行う必要があったが、このような高い圧縮率で圧縮すると、圧着部近傍の断面積が小さくなり、この部分の電線に曲げ等の応力が印加されると、細い部分に応力が集中して、破断やクラック等の強度的な問題が発生していた。 However, with the crimp terminal structure described in Patent Document 1, although the shear force on the aluminum electric wire was reduced to some extent, it was not sufficient, and there was a high possibility that shear would occur at the end of the barrel. In particular, when crimping an aluminum electric wire to a crimp terminal, in order to maintain good electrical contact, it was necessary to crimp it at a considerable compression ratio (for example, the compression ratio of the cross-sectional area of the crimped part is 60 to 80%). However, when compressed at such a high compression ratio, the cross-sectional area near the crimped part becomes small, and when stress such as bending is applied to the electric wire in this part, the stress is concentrated in the thin part, causing strength problems such as breakage and cracking.

従って本発明の目的は、アルミニウムやアルミニウム合金製の導体を有する電線を圧着接続する場合に圧着部近傍の電線の曲げ及び引張応力に対する強度を充分に高めることができる圧着接続構造及び圧着接続方法を提供することにある。 The object of the present invention is therefore to provide a crimp connection structure and a crimp connection method that can sufficiently increase the strength of the wire against bending and tensile stress near the crimped portion when crimping wires having conductors made of aluminum or aluminum alloy.

本発明によれば、圧着接続構造は、圧着端子と、この圧着端子とは独立して形成され圧着端子のバレル部内側に配置され圧着方向に突出する複数の突起を有するセレーション部材と、圧着端子のバレル部内側のセレーション部材内に挿入されて圧着される導体がアルミニウム又はアルミニウム合金製の電線とを備えている。圧着端子のバレル部は圧着された電線に沿った端部にベルマウス部を有しており、セレーション部材の一部がベルマウス部の端面より外部に突出している。 According to the present invention, the crimp connection structure comprises a crimp terminal, a serration member formed independently of the crimp terminal and disposed inside the barrel portion of the crimp terminal, the serration member having a plurality of projections projecting in the crimping direction, and an aluminum or aluminum alloy electric wire as a conductor inserted into the serration member inside the barrel portion of the crimp terminal and crimped. The barrel portion of the crimp terminal has a bell-mouth portion at the end along the crimped electric wire, and a portion of the serration member projects outward from the end face of the bell-mouth portion.

圧着端子のバレル部が端部にベルマウス部を有しており、セレーション部材の一部がベルマウス部の端面より外部に突出しているので、バレル部をカシメにより圧着した場合に、セレーション部材のベルマウス端面より外部に突出している部分の内側にある突起がアルミニウム電線に食い込むことにより、圧着部近傍の電線の曲げ応力に対する強度を大幅に高めることができる。 The barrel portion of the crimp terminal has a bell-mouth portion at its end, and a portion of the serration member protrudes outward from the end face of the bell-mouth portion. When the barrel portion is crimped by crimping, the protrusions on the inside of the portion of the serration member that protrudes outward from the bell-mouth end face bite into the aluminum electric wire, greatly increasing the strength of the electric wire against bending stress in the vicinity of the crimped portion.

セレーション部材が、ベルマウス部の端面より少なくとも２ｍｍ外部に突出していることが好ましい。 It is preferable that the serration member protrudes at least 2 mm outward from the end face of the bellmouth portion.

圧着端子が、銅又は銅合金製の基材と、この基材の表面に形成された錫メッキ層とを有するクローズドバレル型の圧着端子であることも好ましい。 It is also preferable that the crimp terminal is a closed barrel type crimp terminal having a copper or copper alloy base material and a tin-plated layer formed on the surface of the base material.

セレーション部材が、銅又は銅合金製の基材と、この基材の表面に形成された錫メッキ層とを有していることも好ましい。 It is also preferable that the serration member has a base material made of copper or a copper alloy and a tin-plated layer formed on the surface of the base material.

電線が平角形状又は丸形状の軸断面を有していることも好ましい。 It is also preferable that the wire has a rectangular or round axial cross section.

本発明によれば、さらに、圧着接続方法は、圧着端子のバレル部内側に独立して配置され圧着方向に突出する複数の突起を有するセレーション部材内に、アルミニウム又はアルミニウム合金製の導体を有する電線を挿入し、圧着端子のバレル部の導体が挿入された端部にベルマウス部が形成され、かつセレーション部材の一部がベルマウス部より外部に突出するように圧着端子のバレル部を圧着する。 According to the present invention, the crimp connection method further includes inserting an electric wire having a conductor made of aluminum or aluminum alloy into a serration member that has multiple protrusions that are independently arranged inside the barrel portion of the crimp terminal and protrude in the crimping direction, and crimping the barrel portion of the crimp terminal so that a bell-mouth portion is formed at the end of the barrel portion of the crimp terminal where the conductor is inserted, and a part of the serration member protrudes outward from the bell-mouth portion.

圧着端子のバレル部の端部にベルマウス部を形成し、セレーション部材の一部がベルマウス部の端面より外部に突出するようにバレル部のカシメを行っているので、圧着部近傍の電線の曲げ応力に対する強度を大幅に高めることができる。 A bell-mouth portion is formed at the end of the barrel of the crimp terminal, and the barrel portion is crimped so that part of the serration member protrudes outward from the end face of the bell-mouth portion, greatly increasing the strength of the wire near the crimp portion against bending stress.

セレーション部材がベルマウス部の端面より少なくとも２ｍｍ外部に突出するように圧着することが好ましい。 It is preferable to crimp the serration member so that it protrudes at least 2 mm outward from the end face of the bellmouth portion.

圧着端子として、銅又は銅合金製の基材の表面に錫メッキ層を形成したクローズドバレル型の圧着端子を用いることも好ましい。 It is also preferable to use a closed barrel type crimp terminal in which a tin-plated layer is formed on the surface of a copper or copper alloy substrate.

セレーション部材として、銅又は銅合金製の基材の表面に錫メッキ層を形成したセレーション部材を用いることも好ましい。 It is also preferable to use a serrated member in which a tin-plated layer is formed on the surface of a copper or copper alloy substrate.

電線として、平角形状又は丸形状の軸断面を有する電線を用いることも好ましい。 It is also preferable to use an electric wire having a rectangular or round axial cross section.

本発明によれば、圧着端子のバレル部が端部にベルマウス部を有しており、セレーション部材の一部がベルマウス部の端面より外部に突出しているので、バレル部をカシメによって圧着した場合に、圧着部近傍の電線の曲げ応力に対する強度を大幅に高めることができる。 According to the present invention, the barrel portion of the crimp terminal has a bell-mouth portion at its end, and a portion of the serration member protrudes outward from the end face of the bell-mouth portion. When the barrel portion is crimped by crimping, the strength of the wire near the crimp portion against bending stress can be significantly increased.

本発明の一実施形態における圧着接続構造の圧着後の構成を概略的に示す斜視図である。FIG. 2 is a perspective view showing a schematic configuration of a crimp connection structure according to an embodiment of the present invention after crimping. 図１の圧着接続構造の組込み前及び圧着前の構成を説明する分解斜視図である。FIG. 2 is an exploded perspective view illustrating the configuration of the crimp connection structure of FIG. 1 before assembly and before crimping. 図２ａの圧着接続構造におけるセレーション部材の貫通孔の構造を示す断面図である。2b is a cross-sectional view showing the structure of a through hole of a serration member in the crimp connection structure of FIG. 2a. FIG. 図１の圧着接続構造の組込み後及び圧着前の構成を説明する分解斜視図である。FIG. 2 is an exploded perspective view illustrating the configuration of the crimp connection structure of FIG. 1 after assembly and before crimping. 図１の実施形態の圧着接続構造について圧着後の圧着接続部の状態を示す断面図である。2 is a cross-sectional view showing a state of a crimp connection portion after crimping in the crimp connection structure of the embodiment of FIG. 1 . FIG. 従来技術の圧着接続構造について圧着後の圧着接続部の状態を示す断面図である。FIG. 1 is a cross-sectional view showing a state of a crimp connection portion after crimping in a conventional crimp connection structure. 本発明の実施例及び比較例における曲げ試験を説明する図である。FIG. 2 is a diagram illustrating a bending test in an embodiment of the present invention and a comparative example. 本発明の実施例及び比較例における引張試験を説明する図である。FIG. 2 is a diagram illustrating a tensile test in an example and a comparative example of the present invention.

図１は本発明の一実施形態における圧着接続構造の圧着後の構成を概略的に示している。 Figure 1 shows a schematic diagram of the configuration of a crimped connection structure in one embodiment of the present invention after crimping.

同図に示すように、圧着接続構造は、圧着端子の圧着部（バレル部）１０の内側に配置されて圧着されたセレーション部材１１と、このセレーション部材１１内に挿入されて圧着された電線の導体１２とから構成されている。圧着端子及びそのバレル部１０は、銅又は銅合金から形成されており、表面に錫メッキが施されている。セレーション部材１１も同様に銅又は銅合金から形成されており、表面に錫メッキが施されている。銅合金としては、黄銅合金、青銅合金、リン青銅合金又はその他の種々の銅合金が用いられる。電線の導体１２はアルミニウム又はアルミニウム合金から形成されており、その周囲に絶縁被覆が形成されていても良い。 As shown in the figure, the crimp connection structure is composed of a serration member 11 that is placed inside the crimping portion (barrel portion) 10 of the crimp terminal and crimped, and an electric wire conductor 12 that is inserted into the serration member 11 and crimped. The crimp terminal and its barrel portion 10 are made of copper or a copper alloy and have a tin-plated surface. The serration member 11 is also made of copper or a copper alloy and has a tin-plated surface. The copper alloy may be a brass alloy, a bronze alloy, a phosphorus bronze alloy, or any other copper alloy. The electric wire conductor 12 is made of aluminum or an aluminum alloy and may have an insulating coating formed around it.

本実施形態において、圧着端子はクローズドバレル型の圧着端子であり、そのバレル部１０には、圧着された電線に沿った端部に、圧着時に未加圧であり、従って、端縁に向かって離軸方向に拡がるベルマウス部１０ａが形成されている。さらに、セレーション部材１１の一部がこのベルマウス部１０ａの端面より外部に突出している。 In this embodiment, the crimp terminal is a closed barrel type crimp terminal, and the barrel portion 10 has a bell-mouth portion 10a formed at the end along the crimped electric wire, which is not pressurized when crimped and therefore expands in the non-axial direction toward the end edge. Furthermore, a part of the serration member 11 protrudes outward from the end face of this bell-mouth portion 10a.

図２ａは本実施形態における圧着接続構造の組込み前及び圧着前の構成を説明する図であり、図２ｂはこの圧着接続構造におけるセレーション部材の貫通孔の構造を示す図であり、図３は本実施形態における圧着接続構造の組込み後及び圧着前の構成を説明する図である。 Figure 2a is a diagram explaining the configuration of the crimp connection structure in this embodiment before assembly and before crimping, Figure 2b is a diagram showing the structure of the through holes of the serration member in this crimp connection structure, and Figure 3 is a diagram explaining the configuration of the crimp connection structure in this embodiment after assembly and before crimping.

圧着端子のバレル部１０は、圧着前は円筒形状に形成されており、その内部にはこのバレル部１０とは別個に独立して形成された略円筒形状のセレーション部材１１が挿嵌されている。セレーション部材１１は銅又は銅合金の平板を丸めて円筒形状（断面が円形状）となるように形成されており、図２ｂに示すように、多数の貫通孔１１ａがもうけられている。各貫通孔１１ａの開口端部には、円筒形状の内側に向かう多数の突起１１ｂが設けられている。電線の導体１２は、本実施形態では、平角形状の軸断面を有しているが、丸形状の軸断面を有するように構成しても良い。 The barrel portion 10 of the crimp terminal is formed into a cylindrical shape before crimping, and a roughly cylindrical serration member 11 formed separately and independently from the barrel portion 10 is inserted inside it. The serration member 11 is formed by rolling a copper or copper alloy plate into a cylindrical shape (with a circular cross section), and as shown in FIG. 2b, a number of through holes 11a are provided. The open end of each through hole 11a is provided with a number of protrusions 11b that point inward into the cylindrical shape. In this embodiment, the conductor 12 of the electric wire has an axial cross section that is rectangular, but may also be configured to have a circular axial cross section.

図２ａに示すように、圧着端子のバレル部１０内側に、円筒形状（断面が円形状）に丸められたセレーション部材１１を挿嵌し、セレーション部材１１の内側に電線の導体１２を挿入して組込みを行う。この場合、セレーション部材１１の一部がバレル部１０の端面より外部に２ｍｍ又はそれ以上（少なくとも２ｍｍ）突出させる。この状態が図３に示されている。このように組込み後のバレル部１０、セレーション部材１１及び導体１２に対して、導体１２の平面と垂直の方向に加圧してカシメを行うことにより圧着を完了する。ただし、バレル部１０の圧着された導体１２に沿った端部に、未加圧部であるベルマウス部１０ａが形成されるようにカシメを行う。この圧着後の状態が図１に示されている。 As shown in FIG. 2a, the serration member 11, which is rounded into a cylindrical shape (with a circular cross section), is inserted inside the barrel portion 10 of the crimp terminal, and the conductor 12 of the electric wire is inserted inside the serration member 11 to assemble the terminal. In this case, a part of the serration member 11 protrudes 2 mm or more (at least 2 mm) outward from the end face of the barrel portion 10. This state is shown in FIG. 3. After assembly in this way, the barrel portion 10, serration member 11, and conductor 12 are pressurized in a direction perpendicular to the plane of the conductor 12 to perform crimping, thereby completing the crimping. However, crimping is performed so that the end of the barrel portion 10 along the crimped conductor 12 forms a bell-mouth portion 10a, which is an unpressurized portion. The state after crimping is shown in FIG. 1.

セレーション部材１１は、多数の貫通孔１１ａを備えており、各貫通孔１１ａの一方の開口部には、電線の導体１２への圧着方向に突出する多数の鋭利な突起１１ｂが形成されている。これにより、例えば絶縁被覆されているアルミニウム又はアルミニウム合金製の導体１２に圧着させた際に、電線の絶縁層（例えばエナメル層）がこれら鋭利な突起１１ｂによってせん断され、貫通孔１１ａ内に導体１２が食い込み、これによって導体１２とセレーション部材１１との電気的な接触が確実に行われる。その結果、信頼性の高い確実な圧着接続を行うことができる。 The serration member 11 has many through holes 11a, and one opening of each through hole 11a has many sharp protrusions 11b formed therein that protrude in the direction of crimping the electric wire to the conductor 12. As a result, when the serration member 11 is crimped to an insulating conductor 12 made of aluminum or aluminum alloy, for example, the insulating layer (e.g., enamel layer) of the electric wire is sheared by these sharp protrusions 11b, and the conductor 12 bites into the through hole 11a, thereby ensuring electrical contact between the conductor 12 and the serration member 11. As a result, a reliable and secure crimp connection can be made.

図４は本実施形態の圧着接続構造について圧接後の圧着接続部の状態を断面で示しており、図５は従来技術の圧着接続構造について圧接後の圧着接続部の状態を断面で示している。 Figure 4 shows a cross-section of the crimp connection portion after crimping for the crimp connection structure of this embodiment, and Figure 5 shows a cross-section of the crimp connection portion after crimping for the crimp connection structure of the prior art.

図４に示すように、本実施形態では、セレーション部材１１が圧着端子のバレル部１０におけるベルマウス部１０ａの端面より外部に突出しているので、その突出したセレーション部材１１の貫通孔１１ａの近傍に形成された突起１１ｂが食い込み、導体１２とセレーション部材１１とが一体化することにより、引張試験（アルミニウム電線の導体１２を圧着端子の軸方向に引っ張る試験）を行った際にも、導体１２の断面積の細い部分１４に応力が集中することはなく、容易に破断するおそれはない。 As shown in FIG. 4, in this embodiment, the serration member 11 protrudes outward from the end face of the bellmouth portion 10a of the barrel portion 10 of the crimp terminal. The protrusions 11b formed near the through holes 11a of the protruding serration member 11 bite into the conductor 12 and the serration member 11, integrating the conductor 12 with the serration member 11. This prevents stress from concentrating on the narrow cross-sectional area portion 14 of the conductor 12, and thus prevents it from easily breaking, even when a tensile test (a test in which the conductor 12 of the aluminum electric wire is pulled in the axial direction of the crimp terminal) is performed.

これに対して、図５に示すように、従来技術では、セレーション部材１１′が圧着端子のバレル部１０′におけるベルマウス部１０ａ′の端面より外部に突出していないので、同様の引張試験を行うと、導体１２′の断面積の細い部分１４′に応力が集中し、容易に破断してしまう。 In contrast, as shown in FIG. 5, in the conventional technology, the serration member 11' does not protrude beyond the end face of the bell-mouth portion 10a' of the barrel portion 10' of the crimp terminal, so when a similar tensile test is performed, stress is concentrated in the narrow cross-sectional area portion 14' of the conductor 12', which easily breaks.

以上詳細に説明したように、本実施形態によれば、圧着端子のバレル部１０が端部にベルマウス部１０ａを有しており、セレーション部材１１がベルマウス部１０ａの端面より外部に２ｍｍほど突出しているので、バレル部１０をカシメによって圧着した場合に、その突出したセレーション部材１１の貫通孔１１ａの近傍に形成された突起１１ｂが食い込み、導体１２とセレーション部材１１とが一体化することにより、圧着部近傍の電線の曲げ応力に対する強度を大幅に高めることができる。 As described above in detail, according to this embodiment, the barrel portion 10 of the crimp terminal has a bell-mouth portion 10a at its end, and the serration member 11 protrudes outward by about 2 mm from the end face of the bell-mouth portion 10a. When the barrel portion 10 is crimped by crimping, the protrusion 11b formed near the through hole 11a of the protruding serration member 11 bites into the protruding serration member 11, and the conductor 12 and the serration member 11 are integrated, greatly increasing the strength of the wire against bending stress near the crimped portion.

上述した実施形態では、電線として、エナメル層が表面に被着されたアルミニウム電線を用いているが、エナメル層が表面に被着されたアルミニウム合金線、エナメル層が表面に被着された銅線、エナメル層が表面に被着された銅合金線、又はエナメル層が表面に被着されたその他の金属電線を用いても良い。 In the above-described embodiment, an aluminum electric wire having an enamel layer applied thereto is used as the electric wire, but an aluminum alloy wire having an enamel layer applied thereto, a copper wire having an enamel layer applied thereto, a copper alloy wire having an enamel layer applied thereto, or another metal electric wire having an enamel layer applied thereto may also be used.

以上述べた本実施形態の圧着接続構造（実施例１～３）及び従来技術のセレーション部材が存在しない圧着接続構造（比較例１～３）について、実際に曲げ試験を行って強度を確認した。 The strength of the crimp connection structure of the present embodiment described above (Examples 1 to 3) and the crimp connection structure of the prior art that does not have a serrated member (Comparative Examples 1 to 3) was confirmed by actually conducting bending tests.

これら実施例１～３及び比較例１～３に用いたアルミニウム電線及び圧着端子は表１の通りである。同表において、使用電線の数値は電線の横幅及び縦幅であり、単位はｍｍである。電線の長さは２００ｍｍであり、実施例におけるセレーションの突出長さは２ｍｍとした。バレル部の端部は、未加圧部であるベルマウス部が形成されるようにカシメが行われている。

Figure 0007515155000001
The aluminum electric wires and crimp terminals used in Examples 1 to 3 and Comparative Examples 1 to 3 are as shown in Table 1. In the table, the numerical values for the electric wires used are the horizontal and vertical widths of the wires, and are in mm. The length of the electric wires was 200 mm, and the protruding length of the serrations in the examples was 2 mm. The end of the barrel portion was crimped to form a bell-mouth portion, which is an unpressurized portion.
Figure 0007515155000001

曲げ試験は、図６（Ａ）に示す圧着端子の下部をバイスに固定し、図６（Ｂ）に示すように電線の端部を筒１３内に挿入して把持し、この筒１３を電線の縦幅方向である左右に４５度まで曲げる動作を行い、線の曲げ強度が大きく下がり破断するまでの曲げ回数を測定した。ここで、曲げ回数のカウントは、右又は左に４５度曲げ、中央に戻ったところで１回とした。表２にその曲げ試験結果である曲げ回数（単位は回）を示す。 In the bending test, the lower part of the crimp terminal shown in Figure 6 (A) was fixed in a vice, and the end of the electric wire was inserted and gripped in the tube 13 as shown in Figure 6 (B), and the tube 13 was bent to the left and right in the vertical width direction of the electric wire by 45 degrees, and the number of bends until the bending strength of the wire significantly decreased and it broke was measured. Here, the number of bends was counted as one when the wire was bent 45 degrees to the right or left and returned to the center. Table 2 shows the number of bends (unit: times) that are the results of the bending test.

Figure 0007515155000002
Figure 0007515155000002

同表より、セレーション部材がバレル部の端面より外部に２ｍｍ突出している実施例１～３は、セレーション部材が存在しない（セレーション部材がバレル部の端面から外部に突出していない場合に対応する）比較例１～３に比して破断までの曲げ回数が圧倒的に多く、セレーション部材がバレル部の端面より外部に２ｍｍ突出することによって曲げ強度が大幅に向上することを示している。 As can be seen from the table, Examples 1 to 3, in which the serration member protrudes 2 mm outward from the end face of the barrel portion, had an overwhelmingly greater number of bends before breaking compared to Comparative Examples 1 to 3, in which the serration member was not present (corresponding to cases in which the serration member did not protrude outward from the end face of the barrel portion), indicating that the bending strength is significantly improved by having the serration member protrude 2 mm outward from the end face of the barrel portion.

一方、本実施形態の圧着接続構造（実施例４～６）及び従来技術の圧着接続構造（比較例４～６）について、実際の引張試験を行って強度を確認した。 On the other hand, actual tensile tests were conducted to confirm the strength of the crimp connection structure of this embodiment (Examples 4 to 6) and the crimp connection structure of the conventional technology (Comparative Examples 4 to 6).

引張試験は、図７に示すように、長さ２８０ｍｍの２本の絶縁被膜付き丸型アルミニウム電線（φ２．５ｍｍ）２０の両端に、本実施形態の圧着接続構造を有する圧着端子２１（実施例４～６）又は従来技術の圧着端子構造を有する圧着端子２１（比較例４～６）をそれぞれ圧着接続し、これら圧着端子２１を引張試験機のチャック２２間に装着し、引張速度２５ｍｍ／分で引張試験を実施し、両圧着端子２１間の最大引張強度を測定した。その測定結果が表３に示されている。 As shown in Figure 7, the tensile test was performed by crimping a crimp terminal 21 (Examples 4-6) having the crimp connection structure of this embodiment or a crimp terminal 21 (Comparative Examples 4-6) having a crimp terminal structure of the conventional technology to both ends of two 280 mm long round aluminum electric wires (φ2.5 mm) 20 with an insulating coating, and mounting these crimp terminals 21 between the chucks 22 of a tensile tester. A tensile test was performed at a tensile speed of 25 mm/min, and the maximum tensile strength between the two crimp terminals 21 was measured. The measurement results are shown in Table 3.

Figure 0007515155000003
Figure 0007515155000003

同表から分かるように、セレーション部材がバレル部端面より外部に２ｍｍ突出している実施例４～６は、セレーション部材がバレル部端面から外部に突出していない比較例４～６に比して引張強度が大きい。従って、セレーション部材がバレル部端面より外部に２ｍｍ突出することによって、引張強度が大幅に向上することが分かった。 As can be seen from the table, Examples 4 to 6, in which the serration member protrudes 2 mm outward from the end face of the barrel portion, have a higher tensile strength than Comparative Examples 4 to 6, in which the serration member does not protrude outward from the end face of the barrel portion. Therefore, it was found that the tensile strength is significantly improved by having the serration member protrude 2 mm outward from the end face of the barrel portion.

以上述べた実施形態及び実施例は全て本発明を例示的に示すものであって限定的に示すものではなく、本発明は他の種々の変形態様及び変更態様で実施することができる。従って本発明の範囲は特許請求の範囲及びその均等範囲によってのみ規定されるものである。 The above-described embodiments and examples are illustrative of the present invention and are not limiting, and the present invention can be implemented in various other modified and altered forms. Therefore, the scope of the present invention is defined only by the claims and their equivalents.

１０、１０′ バレル部
１０ａ ベルマウス部
１１、１１′ セレーション部材
１１ａ 貫通孔
１１ｂ 突起
１２、１２′ 導体
１３ 筒
１４、１４′ 断面積の細い部分
２０ アルミニウム電線
２１ 圧着端子
２２ チャック REFERENCE SIGNS LIST 10, 10' Barrel portion 10a Bellmouth portion 11, 11' Serration member 11a Through hole 11b Projection 12, 12' Conductor 13 Cylinder 14, 14' Narrow cross-sectional area portion 20 Aluminum electric wire 21 Crimp terminal 22 Chuck

Claims (10)

円筒形状のバレル部を有する圧着端子と、該圧着端子とは独立して形成され該圧着端子の前記バレル部の内側に配置され圧着方向に突出する複数の突起を有する円筒形状のセレーション部材と、前記圧着端子の前記バレル部の内側の前記セレーション部材内に挿入されて圧着される導体を有するアルミニウム又はアルミニウム合金製の電線とを備えており、前記圧着端子の前記バレル部は、圧着された前記電線に沿った端部に端縁に向かって離軸方向に拡がるベルマウス部を有しており、前記セレーション部材の一部が前記ベルマウス部の端面より外部に突出しており、前記セレーション部材の前記外部に突出した一部の内側に配置された前記複数の突起が、前記バレル部の圧着によって前記電線に食い込んでいることを特徴とする圧着接続構造。 a cylindrical serration member formed independently of the crimp terminal and disposed inside the barrel portion of the crimp terminal , the cylindrical serration member having a plurality of protrusions protruding in the crimping direction; and an aluminum or aluminum alloy electric wire having a conductor that is inserted into the serration member inside the barrel portion of the crimp terminal and crimped , the barrel portion of the crimp terminal having a bell-mouth portion that extends off-axially toward an end edge at an end along the crimped electric wire, a portion of the serration member protruding outward from an end face of the bell-mouth portion, and the plurality of protrusions, disposed inside the portion of the serration member protruding outward, are inserted into the electric wire by the crimping of the barrel portion . 前記セレーション部材が、前記ベルマウス部の端面より少なくとも２ｍｍ外部に突出していることを特徴とする請求項１に記載の圧着接続構造。 The crimp connection structure according to claim 1, characterized in that the serration member protrudes at least 2 mm outward from the end face of the bellmouth portion. 前記圧着端子が、銅又は銅合金製の基材と、該基材の表面に形成された錫メッキ層とを有するクローズドバレル型の圧着端子であることを特徴とする請求項１に記載の圧着接続構造。 2. The crimp connection structure according to claim 1 , wherein the crimp terminal is a closed barrel type crimp terminal having a base material made of copper or a copper alloy and a tin-plated layer formed on a surface of the base material. 前記セレーション部材が、銅又は銅合金製の基材と、該基材の表面に形成された錫メッキ層とを有していることを特徴とする請求項１に記載の圧着接続構造。 2. The crimp connection structure according to claim 1 , wherein the serration member has a base material made of copper or a copper alloy and a tin-plated layer formed on a surface of the base material. 前記電線が平角形状又は丸形状の軸断面を有していることを特徴とする請求項１に記載の圧着接続構造。 2. The crimp connection structure according to claim 1 , wherein the electric wire has an axial cross section that is rectangular or round. 圧着端子の円筒形状のバレル部の内側に独立して配置され圧着方向に突出する複数の突起を有する円筒形状のセレーション部材内に、アルミニウム又はアルミニウム合金製の導体を有する電線を挿入し、前記圧着端子の前記バレル部の前記導体が挿入された端部に端縁に向かって離軸方向に拡がるベルマウス部が形成され、かつ前記セレーション部材の一部が前記ベルマウス部より外部に突出し、前記セレーション部材の外部に突出した前記一部の内側に配置された前記複数の突起が前記電線に食い込むように、前記圧着端子の前記バレル部を圧着することを特徴とする圧着接続方法。 a cylindrical serration member having a plurality of protrusions arranged independently inside a cylindrical barrel portion of a crimp terminal and protruding in the crimping direction, and a bell-mouth portion extending in an off-axial direction toward an end edge is formed at an end of the barrel portion of the crimp terminal where the conductor is inserted, a portion of the serration member protruding outwardly from the bell-mouth portion, and the plurality of protrusions arranged inside the portion of the serration member protruding outwardly are crimped into the electric wire . 前記セレーション部材が前記ベルマウス部の端面より少なくとも２ｍｍ外部に突出するように圧着することを特徴とする請求項６に記載の圧着接続方法。 The crimping connection method according to claim 6, characterized in that the serration member is crimped so as to protrude at least 2 mm outward from the end face of the bellmouth portion. 前記圧着端子として、銅又は銅合金製の基材の表面に錫メッキ層を形成したクローズドバレル型の圧着端子を用いることを特徴とする請求項６に記載の圧着接続方法。 7. The crimp connection method according to claim 6 , wherein the crimp terminal is a closed barrel type crimp terminal having a tin-plated layer formed on a surface of a base material made of copper or a copper alloy. 前記セレーション部材として、銅又は銅合金製の基材の表面に錫メッキ層を形成したセレーション部材を用いることを特徴とする請求項６に記載の圧着接続方法。 7. The method for crimping and connecting according to claim 6 , wherein the serrated member is a serrated member having a tin-plated layer formed on the surface of a base material made of copper or a copper alloy. 前記電線として、平角形状又は丸形状の軸断面を有する電線を用いることを特徴とする請求項６に記載の圧着接続方法。 The crimp connection method according to claim 6 , wherein the electric wire has an axial cross section of a rectangular shape or a round shape.
JP2020094104A 2020-05-29 2020-05-29 Crimp connection structure and crimp connection method Active JP7515155B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020094104A JP7515155B2 (en) 2020-05-29 2020-05-29 Crimp connection structure and crimp connection method
CN202110257383.0A CN113745861A (en) 2020-05-29 2021-03-09 Crimping connection structure and crimping connection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020094104A JP7515155B2 (en) 2020-05-29 2020-05-29 Crimp connection structure and crimp connection method

Publications (2)

Publication Number Publication Date
JP2021190289A JP2021190289A (en) 2021-12-13
JP7515155B2 true JP7515155B2 (en) 2024-07-12

Family

ID=78728199

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020094104A Active JP7515155B2 (en) 2020-05-29 2020-05-29 Crimp connection structure and crimp connection method

Country Status (2)

Country Link
JP (1) JP7515155B2 (en)
CN (1) CN113745861A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002010469A (en) 2000-06-20 2002-01-11 Auto Network Gijutsu Kenkyusho:Kk Terminal connection construction for shielding electric wire
JP2005339850A (en) 2004-05-25 2005-12-08 Furukawa Electric Co Ltd:The Waterproof structure of terminal for aluminum wire cable
WO2011115004A1 (en) 2010-03-17 2011-09-22 株式会社オートネットワーク技術研究所 Cable having terminal fitting
JP2014056753A (en) 2012-09-13 2014-03-27 Auto Network Gijutsu Kenkyusho:Kk Electric wire with terminal
JP2017022110A (en) 2015-07-10 2017-01-26 株式会社白山製作所 Crimp connection member, crimp connection structure, and serration member
JP2018514935A (en) 2015-05-21 2018-06-07 デルフィ・テクノロジーズ・インコーポレイテッド Crimp connection system for electrical cables with a fastening sleeve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002010469A (en) 2000-06-20 2002-01-11 Auto Network Gijutsu Kenkyusho:Kk Terminal connection construction for shielding electric wire
JP2005339850A (en) 2004-05-25 2005-12-08 Furukawa Electric Co Ltd:The Waterproof structure of terminal for aluminum wire cable
WO2011115004A1 (en) 2010-03-17 2011-09-22 株式会社オートネットワーク技術研究所 Cable having terminal fitting
JP2014056753A (en) 2012-09-13 2014-03-27 Auto Network Gijutsu Kenkyusho:Kk Electric wire with terminal
JP2018514935A (en) 2015-05-21 2018-06-07 デルフィ・テクノロジーズ・インコーポレイテッド Crimp connection system for electrical cables with a fastening sleeve
JP2017022110A (en) 2015-07-10 2017-01-26 株式会社白山製作所 Crimp connection member, crimp connection structure, and serration member

Also Published As

Publication number Publication date
CN113745861A (en) 2021-12-03
JP2021190289A (en) 2021-12-13

Similar Documents

Publication Publication Date Title
JP5121801B2 (en) Electrical connection system for use with aluminum wire
JP2020107615A (en) Cable assembly
US20200287300A1 (en) Connection Terminal, Method Of Connecting Wires Using The Same And Pressing Die
JP2010198789A (en) Terminal structure of crimp terminal
JP2009123622A (en) Crimping terminal for aluminum wire
EP2159880A1 (en) A terminal fitting and a wire connected with a terminal fitting
JP5434095B2 (en) Electric wire connection sleeve, repair electric wire, electric wire connection sleeve manufacturing method, and electric wire connection method
JP2009245696A (en) Crimp terminal
JP7337886B2 (en) crimp terminal
JP7515155B2 (en) Crimp connection structure and crimp connection method
WO2017115710A1 (en) Method for producing cable with terminal, and cable with terminal
JPH0572053U (en) Wire crimp terminal
WO2015053182A1 (en) Crimp terminal
JP2009021148A (en) Wire connection structure
EP3079160B1 (en) Coil end connecting structure
JPH09139238A (en) Electric wire connecting method
JP5008821B2 (en) Electric wire with terminal and manufacturing method thereof
US10707586B2 (en) Wire with terminal
JP2010044913A (en) Crimp connection terminal
WO2023157733A1 (en) Crimped terminal
EP3989363A1 (en) Electrical crimp terminal
WO2021025088A1 (en) Electrical terminal
WO2021124897A1 (en) Crimp terminal, and electric wire with terminal
JP5838938B2 (en) Electric wire with terminal
JP6796619B2 (en) Connection structure of electric wire and terminal

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20230519

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20231211

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20231219

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20240112

A601 Written request for extension of time

Free format text: JAPANESE INTERMEDIATE CODE: A601

Effective date: 20240130

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20240130

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20240206

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20240130

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20240207

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20240326

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20240611

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240625

R150 Certificate of patent or registration of utility model

Ref document number: 7515155

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150