JP3679185B2 - Crimp connection method for conductors - Google Patents

Description

【０００１】
【発明の属する技術分野】
本発明は、Ｕ字状の導体圧着片を有し、二重導体を圧着接続するための導体の圧着接続方法に関するものである。
【０００２】
【従来の技術】
一般に、Ｕ字状の導体圧着片を使用する端子圧着装置は、雌型の案内面に隣接した奥部に中央の***部で出合う２個の半円孤面を有し、上端を平坦面とした雄型との圧着過程において、図５に示すようにＵ字状導体圧着片１の両側壁１ａ、１ｂの先端は、それぞれ導体２の方向に曲げられて導体２に向けて突出される。この方式の圧着端子は、導体圧着片の側壁を単に曲げるだけで導体２を押し潰して緊締保持できるため、比較的小さな押圧力で作用し広く使用されている。
【０００３】
【発明が解決しようとする課題】
しかしながら近年では、特殊用途のために図６に示すように、ステンレス等の硬質導体３の周囲に銅等の軟質導体４を配置し、その周囲を絶縁被覆５で囲んだ補強芯線入りの二重導体電線６が用いられることがある。
【０００４】
この二重導体電線６の二重導体７に圧着端子を接続する場合には、中心の硬質導体３を中央部に位置させて確実に保持しなければ、堅固で信頼性を有する電気接続は期待できない。
【０００５】
しかし、図５に示す従来の圧着構造では、中心の硬質導体３は塑性変化し難しいので必ずしも中央部に位置するとは限らず、左側又は右側に片寄ってしまい、確実な保持ができず、引張力等によって保持が外れてしまうことがある。
【０００６】
本発明の目的は、上述の問題点を解消し、硬質導体を圧着構造の中央部に配置して、確実に緊締保持し得る導体の圧着接続方法を提供することにある。
【０００７】
【課題を解決するための手段】
上記目的を達成するための本発明に係る導体の圧着接続方法は、中心部に硬質導体を設けその周囲を軟質導体を囲んだ二重導体に圧着端子を接続する接続方法であり、前記圧着端子のＵ字状の両側壁から成る２枚の導体圧着片を曲成して、該導体圧着片の底部との間に前記二重導体を緊締包囲すると共に、圧着装置の凸型により前記底部に間隔をおいた２条の溝部を前記二重導体に向けて形成し、前記溝部間に前記硬質導体を位置させることを特徴とする。
【０００８】
【発明の実施の形態】
本発明を図１〜図４に図示の実施例に基づいて詳細に説明する。
図１は電線の導体に接続するための周知の圧着端子を示し、図示を省略する本体１０の後方に、底部１１から両側に、同じ高さの２枚の導体圧着片１２ａ、１２ｂをＵ字状に立ち上げている。なお、導体圧着片１２ａ、１２ｂの後部に被覆部を圧着するための圧着片を更にＵ字状に設ける場合もある。
【０００９】
圧着装置の押型は図２に示すように雄型１３と雌型１４とから成り、雄型１３は導体圧着片１２ａ、１２ｂ間の底部１１を成型するためのものであって、上面に２条の凸型１５ａ、１５ｂを有している。また、雌型１４はほぼ既知の構造とされ、曲面の案内面１６ａ、１６ｂを有し、最奥部には導体圧着片１２ａ、１２ｂの上端を曲成するための２つの半円弧部１７ａ、１７ｂが設けられている。
【００１０】
図１に示す圧着端子を使用して、図３に示すように底部１１上に、二重導体電線６の絶縁被覆５を剥離した二重導体７を載せ、これらを圧着装置の雄型１３と雌型１４との間に挿入する。ここで、雌型１４を下降又は雄型を上昇させると、導体圧着片１２ａ、１２ｂは雌型１４の案内面１６ａ、１６ｂによって内方に曲げられ、更に雌型１４と雄型１３を接近させれば導体圧着片１２ａ、１２ｂの先端は雌型１４の半円弧部１７ａ、１７ｂによって、図４に示すように下側を向くまで曲成され、導体圧着片１２ａ、１２ｂ間の底部１１には、凸型１５ａ、１５ｂによる２条の溝部１８ａ、１８ｂが形成される。
【００１１】
これにより、二重導体７は導体圧着片１２ａ、１２ｂにより保持され、硬質導体３は底部１１の溝部１８ａ、１８ｂ間に位置し、軟質導体４は硬質導体３の周囲で塑性変形され、堅固な接続ができる。
【００１２】
【発明の効果】
以上説明したように本発明に係る導体の圧着接続方法によれば、底部に形成する２条の溝部により二重導体の硬質導体を略挟み込むことによって、堅固で信頼性のある接続が可能となる。
【図面の簡単な説明】
【図１】接続端子の斜視図である。
【図２】雄型と雌型の正面図である。
【図３】圧着過程の説明図である。
【図４】導体を圧着した状態の断面図である。
【図５】従来の導体を圧着した状態の断面図である。
【図６】二重導体電線の断面図である。
【符号の説明】
３ 硬質導体
４ 軟質導体
６ 二重導体電線
７ 二重導体
１０ 本体
１１ 底部
１２ａ、１２ｂ 導体圧着片
１３ 雄型
１４ 雌型
１８ａ、１８ｂ 溝部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a conductor crimping connection method for crimping and connecting a double conductor having a U-shaped conductor crimping piece.
[0002]
[Prior art]
In general, a terminal crimping apparatus using a U-shaped conductor crimping piece has two semicircular arc surfaces that meet at a central ridge in the back part adjacent to the female guide surface, and the upper end is a flat surface. In the crimping process with the male mold, the ends of the side walls 1a and 1b of the U-shaped conductor crimping piece 1 are bent in the direction of the conductor 2 and project toward the conductor 2 as shown in FIG. The crimp terminal of this system is widely used because it can crush and hold the conductor 2 by simply bending the side wall of the conductor crimping piece, acting with a relatively small pressing force.
[0003]
[Problems to be solved by the invention]
However, in recent years, as shown in FIG. 6 for a special purpose, a soft conductor 4 such as copper is disposed around a hard conductor 3 such as stainless steel, and a double core including a reinforcing core wire surrounded by an insulating coating 5. A conductor wire 6 may be used.
[0004]
When a crimp terminal is connected to the double conductor 7 of the double conductor electric wire 6, a strong and reliable electrical connection is expected if the central hard conductor 3 is not securely held in the center. Can not.
[0005]
However, in the conventional crimping structure shown in FIG. 5, since the central hard conductor 3 is difficult to plastically change, it is not always located at the center, but is displaced to the left or right, and cannot be reliably held, and the tensile force The holding may come off due to the like.
[0006]
An object of the present invention is to solve the above-mentioned problems and to provide a method for crimping and connecting conductors that can be securely clamped by arranging a hard conductor at the center of a crimping structure.
[0007]
[Means for Solving the Problems]
The method for crimping and connecting a conductor according to the present invention to achieve the above object is a method of connecting a crimping terminal to a double conductor having a hard conductor in the center and surrounding a soft conductor. form songs two conductor crimping pieces made of U-shaped side walls of the double conductor between the bottom of the conductor crimping pieces with tightening siege on the bottom by the convex type of the crimping device Article 2 of the groove spaced formed toward the double conductor, characterized in that make positioning the rigid conductor between said groove.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail based on the embodiment shown in FIGS.
FIG. 1 shows a known crimp terminal for connecting to a conductor of an electric wire, and two conductor crimping pieces 12a and 12b having the same height are formed in a U shape on the rear side of a main body 10 (not shown) on both sides from a bottom portion 11. It is launched in a shape. In addition, a crimping piece for crimping the covering portion may be further provided in a U shape at the rear part of the conductor crimping pieces 12a and 12b.
[0009]
As shown in FIG. 2, the pressing die of the crimping apparatus is composed of a male mold 13 and a female mold 14. The male mold 13 is for molding the bottom 11 between the conductor crimping pieces 12a and 12b, and has two strips on the upper surface. Convex molds 15a and 15b. The female mold 14 has a generally known structure, has curved guide surfaces 16a and 16b, and has two semicircular arc portions 17a for bending the upper ends of the conductor crimping pieces 12a and 12b at the innermost portion. 17b is provided.
[0010]
Using the crimp terminal shown in FIG. 1, the double conductor 7 from which the insulation coating 5 of the double conductor wire 6 is peeled is placed on the bottom 11 as shown in FIG. Insert between the female mold 14. Here, when the female die 14 is lowered or the male die is raised, the conductor crimping pieces 12a and 12b are bent inward by the guide surfaces 16a and 16b of the female die 14, and the female die 14 and the male die 13 are further brought closer to each other. Then, the ends of the conductor crimping pieces 12a and 12b are bent by the semicircular arc portions 17a and 17b of the female die 14 so as to face downward as shown in FIG. 4, and at the bottom 11 between the conductor crimping pieces 12a and 12b, The two grooves 18a and 18b are formed by the convex molds 15a and 15b.
[0011]
As a result, the double conductor 7 is held by the conductor crimping pieces 12a and 12b, the hard conductor 3 is positioned between the groove portions 18a and 18b of the bottom 11, and the soft conductor 4 is plastically deformed around the hard conductor 3 to be firmly Connection is possible.
[0012]
【The invention's effect】
As described above, according to the method for crimping and connecting conductors according to the present invention, a rigid and reliable connection can be achieved by substantially sandwiching a double conductor hard conductor between two grooves formed on the bottom. .
[Brief description of the drawings]
FIG. 1 is a perspective view of a connection terminal.
FIG. 2 is a front view of a male mold and a female mold.
FIG. 3 is an explanatory diagram of a crimping process.
FIG. 4 is a cross-sectional view of a state in which a conductor is crimped.
FIG. 5 is a cross-sectional view of a state in which a conventional conductor is crimped.
FIG. 6 is a cross-sectional view of a double conductor electric wire.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 Hard conductor 4 Soft conductor 6 Double conductor electric wire 7 Double conductor 10 Main body 11 Bottom part 12a, 12b Conductor crimping piece 13 Male type 14 Female type 18a, 18b Groove part

Claims (1)

中心部に硬質導体を設けその周囲を軟質導体を囲んだ二重導体に圧着端子を接続する接続方法であり、前記圧着端子のＵ字状の両側壁から成る２枚の導体圧着片を曲成して、該導体圧着片の底部との間に前記二重導体を緊締包囲すると共に、圧着装置の凸型により前記底部に間隔をおいた２条の溝部を前記二重導体に向けて形成し、前記溝部間に前記硬質導体を位置させることを特徴とする導体の圧着接続方法。This is a connection method in which a crimp terminal is connected to a double conductor having a hard conductor in the center and surrounding a soft conductor , and two conductor crimp pieces made of U-shaped side walls of the crimp terminal are bent. to, the double-conductor between the bottom of the conductor crimping pieces with tightening siege formed toward the groove 2 Article spaced to said bottom portion by the convex type of the crimping device to the dual conductor , conductor crimping connection method, characterized in that make positioning the rigid conductor between said groove.

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