JP2005339850A - Waterproof structure of terminal for aluminum wire cable - Google Patents

Waterproof structure of terminal for aluminum wire cable Download PDF

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Publication number
JP2005339850A
JP2005339850A JP2004154027A JP2004154027A JP2005339850A JP 2005339850 A JP2005339850 A JP 2005339850A JP 2004154027 A JP2004154027 A JP 2004154027A JP 2004154027 A JP2004154027 A JP 2004154027A JP 2005339850 A JP2005339850 A JP 2005339850A
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terminal
cable
cylindrical portion
aluminum wire
waterproof structure
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Takeo Munakata
武男 宗像
Atsushi Kato
淳 加藤
Masatoshi Maruyama
政利 丸山
Takashi Shukutani
隆 宿谷
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Furukawa Electric Co Ltd
Asahi Electric Works Ltd
Furukawa Automotive Parts Inc
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Furukawa Electric Co Ltd
Asahi Electric Works Ltd
Furukawa Automotive Parts Inc
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Priority to JP2004154027A priority Critical patent/JP2005339850A/en
Publication of JP2005339850A publication Critical patent/JP2005339850A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal connecting part for an aluminum wire hardly corroded by electrolytic corrosion by applying an excellent waterproof structure thereon, with high reliability maintained for a long period of time, even in case that the terminal is made of copper or copper group material, and a conductor constituting a cable is made of aluminum wire, namely, in the case of constituting the connection terminal by connecting different kinds of metal to each other. <P>SOLUTION: In the waterproof structure of the terminal for the aluminum wire cable, an exposed part of a conductor 9 where an insulation coating of a cable with its conductors made of aluminum wires is removed for a given length is inserted from an open side of a copper or a copper-group terminal cylinder part 4 with one end tightly sealed and the other end opened, and caulked and integrated with the terminal cylinder part 4. At the open side of the terminal cylinder part 4 which is a rear end of the exposed part of the conductor 9, a waterproof sealing agent 12 of a cold setting type is filled between the terminal cylinder part 4 and the cable equipped with the insulation coating 8 to form a watertight structure. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、例えば自動車などのバッテリーケーブルやアースケーブルなどに用いるアルミ線と、このアルミ線の先端に装着する銅端子との接続において、アルミと銅という異種金属により接続端子を構成したことに起因する電食等による破断を防止したアルミ線ケーブル端子の防水構造に関するものである。   The present invention originates from the fact that, for example, a connection terminal is made of different metals such as aluminum and copper in the connection between an aluminum wire used for a battery cable or a ground cable of an automobile or the like and a copper terminal attached to the tip of the aluminum wire. The present invention relates to a waterproof structure of an aluminum wire cable terminal that prevents breakage due to electrolytic corrosion or the like.

近年、電気自動車やハイブリット自動車が用いられるようになってきているが、従来のガソリン自動車も含めこれらの自動車においては、自動車全体を軽量化して燃費を向上させることが求められている。例えば、エンジン周りの構成部品には軽量なアルミ合金材及びアルミ合金部品が採用されているが、さらに軽量化を図るために、バッテリーケーブルやワイヤハーネスへのアルミ材の採用も検討されている。   In recent years, electric vehicles and hybrid vehicles have been used, but these vehicles, including conventional gasoline vehicles, are required to reduce the weight of the entire vehicle and improve fuel efficiency. For example, lightweight aluminum alloy materials and aluminum alloy components are used for the components around the engine, but in order to further reduce the weight, the use of aluminum materials for battery cables and wire harnesses is also being considered.

特に、バッテリーケーブルやアースケーブルなどの場合、これらのケーブルの端部に端子などが圧着されて使用される場合が多い。前記端子がケーブルと同じアルミなどの同一材質からなる端子の場合は、電食などの恐れはないが、異種金属である銅合金などの端子類が接続され、この接続部に雨水などが介在すると局部電池を形成してアルミ材が腐食される、すなわち電食を生じる。   In particular, in the case of a battery cable or a ground cable, a terminal or the like is often crimped to the end of these cables. If the terminal is a terminal made of the same material such as aluminum as the cable, there is no risk of electrolytic corrosion, but terminals such as copper alloys that are dissimilar metals are connected, and rainwater etc. intervenes in this connection part A local battery is formed and the aluminum material is corroded, that is, electric corrosion occurs.

ここで従来の銅撚り線からなるバッテリーケーブルやアースケーブルの両端に銅製の端子を装着した分岐ケーブルの代表例を図10(a)及び図10(b)に示す。
図10(a)が示すように銅撚り線に絶縁被覆を施したバッテリーケーブル30の両端において、接続のために前記絶縁被覆を所定長さ剥ぎ取って形成した導体露出部に、それぞれバッテリーターミナル用端子31と端子32を圧着したものや、図10(b)が示すようにバッテリーターミナル用端子31にアース用ケーブル33の導体露出部を一緒に圧着して二又の分岐構造としたものなどがよく知られている。因みに、符号34はアース用ケーブル33の他端に装着した端子を示している。
10A and 10B show typical examples of a branch cable in which copper terminals are attached to both ends of a conventional battery cable made of a copper stranded wire or a ground cable.
As shown in FIG. 10 (a), at both ends of a battery cable 30 in which a copper stranded wire is covered with an insulation coating, a conductor exposed portion formed by peeling off the insulation coating for a predetermined length for connection is respectively used for a battery terminal. A terminal 31 and a terminal 32 are crimped, or a battery terminal terminal 31 is crimped together with a conductor exposed portion of a ground cable 33 to form a bifurcated structure as shown in FIG. well known. Incidentally, reference numeral 34 denotes a terminal attached to the other end of the ground cable 33.

ところで図10において点線で囲んだ端子圧着部の口元では導体、すなわち銅撚り線が露出している。それ故、この銅撚り線をケーブル軽量化の目的でアルミ撚り線に代替した場合には、この点線で囲んだ部分からから雨水が侵入して、銅製の端子類31、32及び34とアルミ撚り線との間で電食を起こし易い、という問題がある。   Incidentally, the conductor, that is, the copper stranded wire is exposed at the mouth of the terminal crimping portion surrounded by a dotted line in FIG. Therefore, when this copper stranded wire is replaced with an aluminum stranded wire for the purpose of reducing the weight of the cable, rainwater enters from the portion surrounded by the dotted line, and the copper terminals 31, 32 and 34 and the aluminum stranded wire are inserted. There is a problem that electric corrosion tends to occur between the wires.

因みに、現時点においてはアルミ撚り線を使用したケーブルが自動車に使用されていないため、極めて関連の深い先行技術は少ないが、例えば関連する先行技術として特許文献1及び特許文献2が挙げられる。   Incidentally, since cables using aluminum stranded wires are not used in automobiles at present, there are few prior arts that are extremely relevant. For example, Patent Documents 1 and 2 are cited as related prior arts.

例えば特許文献1の図3には、導体性金属パイプAの一端部を押し潰すことによって平らな接続片1と、これに連なる電線挿入用の筒部2とが形成されており、前記筒部2の先端2aが開口されその奥部2bが閉塞されており、前記平らな接続片1にはビス挿入孔(端子取付け穴)1aが打ち抜き形成され、更に前記接続片1の底面と筒部2の底面とが同一平面上に位置するように形成されるようにした電線接続端子が開示されている。   For example, in FIG. 3 of Patent Document 1, a flat connection piece 1 and a tubular portion 2 for inserting an electric wire connected thereto are formed by crushing one end portion of a conductive metal pipe A, and the tubular portion 2 is opened and its back portion 2b is closed, and the flat connection piece 1 is formed with a screw insertion hole (terminal attachment hole) 1a, and further, the bottom surface of the connection piece 1 and the cylindrical portion 2 There is disclosed an electric wire connecting terminal which is formed so that the bottom surface thereof is positioned on the same plane.

また特許文献2の図3には、端子1の略筒状の電線接続部内側に、電線の芯線部(導体露出部)3と絶縁被覆4が施された部分が挿入され、電線接続部が全周に亘って径方向に均一に加締められて、該電線接続部の内周面に該芯線部3と絶縁被覆4とを密着させ、また図7には電線接続部の内側に防水性のシール材を環状に配したことを特徴とする端子と電線接続部の防水接続構造が開示されている。   Also, in FIG. 3 of Patent Document 2, a portion of the terminal 1 with the core wire portion (conductor exposed portion) 3 and the insulation coating 4 is inserted inside the substantially cylindrical wire connection portion, and the wire connection portion is The core wire portion 3 and the insulation coating 4 are brought into close contact with the inner peripheral surface of the wire connection portion by crimping uniformly over the entire circumference in the radial direction. A waterproof connection structure between a terminal and an electric wire connecting portion is disclosed, characterized in that the sealing material is annularly arranged.

登録実用新案第3019822号公報Registered Utility Model No. 3019822 特開2002−216862号公報JP 2002-216862 A

ところで前記特許文献1の電線接続端子では、異種金属と電線との接続は想定されていない。すなわち、端子と芯線とが同一材料同士である場合の接続のみ想定していて、異種金属接続における電食などの問題は全く考慮されていない。具体的には同特許文献1の図4の筒部2の口元と電線3の被覆部3bとの境界部からの雨水の侵入が避けられない。   By the way, in the electric wire connection terminal of the said patent document 1, the connection of a dissimilar metal and an electric wire is not assumed. That is, only the connection in the case where the terminal and the core wire are made of the same material is assumed, and problems such as electrolytic corrosion in dissimilar metal connection are not considered at all. Specifically, intrusion of rainwater from the boundary between the mouth of the cylindrical portion 2 and the covering portion 3b of the electric wire 3 in FIG.

また特許文献2に記載のものは前述したように、電線の芯線部3と絶縁被覆4とが挿入された状態で、ロータリースェージ加工機により電線の芯線部3と絶縁被覆部4とを径方向に一括して圧縮して芯線部3と絶縁被覆部4とを密着させる、かつ電線接続部の内側に防水性のシール材を環状に配した防水接続構造である。
この防水接続構造では、圧縮部口元の絶縁被覆4が局部的に圧縮変形を受ける構造なので、振動疲労や経年劣化で絶縁被覆部に亀裂などが生じ易く、その場合、この亀裂部から雨水等が侵入して電食などを生じて導通不良を起こす恐れがある。
In addition, as described in Patent Document 2, as described above, with the core wire portion 3 and the insulation coating 4 inserted, the wire core wire portion 3 and the insulation coating portion 4 are calibrated by a rotary swaging machine. It is a waterproof connection structure in which the core wire portion 3 and the insulating coating portion 4 are brought into close contact with each other in the direction and the waterproof seal material is arranged in an annular shape inside the electric wire connection portion.
In this waterproof connection structure, since the insulating coating 4 at the mouth of the compression portion is subjected to compressive deformation locally, cracks or the like are likely to occur in the insulating coating portion due to vibration fatigue or aging deterioration. There is a risk of galvanic corrosion due to intrusion and poor conduction.

上記問題に鑑み、本発明の目的は、端子が銅または銅系の材料からなり、ケーブルを構成する心線(導体)がアルミ線からなる、すなわち異種金属同士を接続して接続端子を構成する場合に、この接続端子部に優れた防水構造を施すことにより、アルミ線が電食による腐食を起こし難い、すなわち長期に亘って信頼性の高い、アルミ線ケーブルの端子接続部を提供することにある。   In view of the above problems, an object of the present invention is to form a connection terminal by making a terminal made of copper or a copper-based material and making a cable (conductor) constituting the cable an aluminum wire. In this case, by providing an excellent waterproof structure to the connection terminal portion, the aluminum wire is less likely to be corroded by electrolytic corrosion, that is, to provide a highly reliable terminal connection portion of the aluminum wire cable for a long period of time. is there.

前記目的を達成すべく請求項1記載のアルミ線ケーブル用端子の防水構造は、一端が密封され他端が開口されている銅または銅系の端子円筒部の前記開口されている側から、導体がアルミ線からなるケーブルの絶縁被覆が所定長さ除去された導体露出部が挿入されて、該導体露出部は加締められて前記端子円筒部と一体化されていて、前記導体露出部の後端側で前記端子円筒部の開口側にあっては、前記端子円筒部と絶縁被覆を有するケーブルとの間に常温硬化型の防水性封止材が充填されて水密構造が形成されていることを特徴とするものである。   In order to achieve the above object, the waterproof structure for the aluminum wire cable terminal according to claim 1, wherein one end is sealed and the other end is opened, the copper or copper-based terminal cylindrical portion is opened from the opened side. A conductor exposed portion from which the insulation coating of the cable made of aluminum wire is removed for a predetermined length is inserted, the conductor exposed portion is crimped and integrated with the terminal cylindrical portion, and the conductor exposed portion is On the opening side of the terminal cylindrical part on the end side, a water-tight structure is formed by filling a normal temperature curable waterproof sealing material between the terminal cylindrical part and a cable having an insulation coating. It is characterized by.

このようにしてなる請求項1記載のアルミ線ケーブル用端子の防水構造によれば、端子円筒部の一端は密封されており、他端の開口側も端子円筒部とこれに挿入した導体露出部との間が常温硬化型の防水性封止材で充填されて水密構造が形成されているため、経時的に雨水などの水分の侵入が心配される開口側の防水性が長期に亘って保持される。そのため、雨水などによるこの異種金属で構成される接続部の電食などによる劣化が防止できる。よって長期に亘って信頼性の高い接続部を短時間で提供できる。
因みにアルミ線ケーブルとは、アルミ単線導体に絶縁被覆を施したもの、あるいはより可撓性を有するアルミ撚り線導体に絶縁被覆を施した、例えばバッテリーケーブルなどのアルミ線ケーブル全般をさす。
According to the waterproof structure for an aluminum wire cable terminal according to claim 1, the one end of the terminal cylindrical portion is sealed, and the opening side of the other end is also the terminal cylindrical portion and the conductor exposed portion inserted therein. A watertight structure is formed by filling with a room temperature curable waterproof sealing material, so that the waterproof property on the opening side where moisture such as rainwater may intrude over time is maintained for a long time. Is done. Therefore, it is possible to prevent deterioration due to electrolytic corrosion or the like of the connection portion made of this dissimilar metal due to rain water or the like. Therefore, a highly reliable connection portion can be provided in a short time over a long period of time.
Incidentally, the aluminum wire cable refers to a general aluminum wire cable such as a battery cable in which an aluminum single wire conductor is provided with an insulation coating or a more flexible aluminum stranded wire conductor is provided with an insulation coating.

さらに本発明の請求項2記載のアルミ線ケーブル用端子の防水構造は、請求項1記載のアルミ線ケーブル用端子の防水構造において、前記端子円筒部の一端は、両端が開口されているパイプの前記一端側内面に予め防水性封止材が付着されていて、しかる後扁平に加締められて密封されたものであって、かつこの加締められた部分に端子取付け穴が形成されていることを特徴とするものである。   Furthermore, the waterproof structure of the aluminum wire cable terminal according to claim 2 of the present invention is the waterproof structure of the aluminum wire cable terminal according to claim 1, wherein one end of the terminal cylindrical portion is a pipe having both ends opened. A waterproof sealing material is attached to the inner surface of the one end side in advance, and is then crimped flat and sealed, and a terminal mounting hole is formed in the crimped portion. It is characterized by.

このようにしてなる請求項2記載のアルミ線ケーブル用端子の防水構造によれば、一端を扁平に加締めて端子部を形成する部分の金属パイプ内径部分に、予めRTVシリコーンゴムなどの材料からなる防水性封止材を塗布後扁平に加締めるようにしたので、硬化後の前記RTVシリコーンゴムが加締め箇所の空隙を密封充填するので、この加締めた箇所からの雨水の侵入を確実に防止できる。よって電食などの不具合を確実に防止できる。   According to the waterproof structure of the aluminum wire cable terminal according to claim 2, the metal pipe inner diameter portion of the portion forming the terminal portion by crimping one end flatly is preliminarily made of a material such as RTV silicone rubber. Since the RTV silicone rubber after curing is sealed and filled in the gaps in the caulking part, it is ensured that rainwater enters from the caulked part. Can be prevented. Therefore, problems such as electric corrosion can be reliably prevented.

また本発明の請求項3記載のアルミ線ケーブル用端子の防水構造は、請求項1または請求項2いずれかに記載のアルミ線ケーブル用端子の防水構造において、前記端子円筒部の開口側近傍には、周方向に前記常温硬化型の防水性封止材が注入される注入孔が少なくとも2箇所以上設けられていることを特徴とする。   Moreover, the waterproof structure of the aluminum wire cable terminal according to claim 3 of the present invention is the waterproof structure of the aluminum wire cable terminal according to claim 1 or 2, in the vicinity of the opening side of the terminal cylindrical portion. Is characterized in that at least two or more injection holes for injecting the room temperature curable waterproof sealing material are provided in the circumferential direction.

このようにしてなる請求項3記載のアルミ線ケーブル用端子の防水構造によれば、前記端子円筒部の開口側近傍には、その周方向に前記常温硬化型のRTVシリコーンゴムなどからなる防水性封止材が注入される注入孔が少なくとも2箇所以上設けられている。そのため前記端子円筒部の後端にあって、端子円筒部と絶縁被覆を施されているケーブルとの隙間に前記防水性封止材、例えばRTVシリコーンゴムを充填する際、開口部の内径が絶縁被覆が施されているケーブルの外径に比べあまり大きくなく、両者の隙間が小さい場合でも、端子円筒部の側壁に樹脂の注入孔を複数設けてあるので、防水性封止材の注入作業を容易に行なうことができる。具体的には、防水性封止材内に気泡などを巻き込まずに確実な密封防水処理が行える。もちろんこの注入作業の作業性も向上させることができる。   According to the waterproof structure for an aluminum wire cable terminal according to claim 3, the waterproof property comprising the room temperature curing type RTV silicone rubber in the circumferential direction in the vicinity of the opening side of the terminal cylindrical portion. At least two or more injection holes into which the sealing material is injected are provided. Therefore, when the waterproof sealing material, for example, RTV silicone rubber, is filled in the gap between the terminal cylindrical portion and the cable coated with insulating coating at the rear end of the terminal cylindrical portion, the inner diameter of the opening is insulated. Even when the outer diameter of the coated cable is not too large and the gap between the two is small, there are multiple resin injection holes on the side wall of the terminal cylindrical part. It can be done easily. Specifically, reliable sealing and waterproofing can be performed without entraining bubbles or the like in the waterproof sealing material. Of course, the workability of this injection work can also be improved.

さらにまた本発明の請求項4記載のアルミ線ケーブル用端子の防水構造は、請求項1〜請求項3いずれかに記載のアルミ線ケーブル用端子の防水構造において、前記端子円筒部はその開口側に、前記導体露出部が挿入され加締められた部分より内径の大きな大径部を有していて、該大径部には周方向に前記常温硬化型のRTVシリコーンゴムなどからなる防水性封止材が注入される注入孔が少なくとも2箇所以上設けられていることを特徴とする。   Furthermore, the waterproof structure of the aluminum wire cable terminal according to claim 4 of the present invention is the waterproof structure of the aluminum wire cable terminal according to any one of claims 1 to 3, wherein the terminal cylindrical portion is on the opening side thereof. A large-diameter portion having a larger inner diameter than the portion where the conductor exposed portion is inserted and crimped, and the large-diameter portion is formed of a waterproof seal made of the room temperature curing type RTV silicone rubber in the circumferential direction. It is characterized in that at least two injection holes into which the stopper material is injected are provided.

このようにしてなる請求項4記載のアルミ線ケーブル用端子の防水構造によれば、前記端子円筒部はその開口側に、前記導体露出部が挿入され加締められた部分より内径の大きな大径部を有していて、該大径部には周方向に前記常温硬化型のRTVシリコーンゴムなどからなる防水性封止材が注入される注入孔が少なくとも2箇所以上設けられている。
そのため前記端子円筒部の後端にあって、端子円筒部と絶縁被覆を施されているケーブルとの隙間に前記防水性封止材を充填する際、開口部の内径が挿入されるケーブルの外径に比べあまり大きくなく、両者の隙間が小さい場合でも、端子円筒部の開口側に大径部を設けたことにより、端子円筒部の開口部とケーブル間の隙間を大きくとることができ、かつ防水性封止材の注入孔も複数設けてあるので、防水性封止材の注入作業を容易に行なうことができる。すなわち防水性封止材内に気泡などを巻き込まずに、しかもより短時間で密封防水処理を確実に行える。
According to the waterproof structure for an aluminum wire cable terminal according to claim 4, the terminal cylindrical portion has a large diameter larger than the portion where the conductor exposed portion is inserted and crimped on the opening side. The large-diameter portion is provided with at least two injection holes for injecting a waterproof sealing material made of the room temperature curing type RTV silicone rubber in the circumferential direction.
Therefore, at the rear end of the terminal cylindrical portion, when the waterproof sealing material is filled in the gap between the terminal cylindrical portion and the cable with the insulation coating, the outer diameter of the cable into which the inner diameter of the opening is inserted is inserted. Even if the gap between the two is small, the gap between the opening of the terminal cylindrical part and the cable can be made large by providing a large diameter part on the opening side of the terminal cylindrical part, and Since a plurality of waterproof sealing material injection holes are provided, the waterproof sealing material can be easily injected. That is, it is possible to reliably perform the sealing and waterproofing process in a shorter time without involving bubbles or the like in the waterproof sealing material.

また本発明の請求項5記載のアルミ線ケーブル用端子の防水構造は、請求項1〜請求項4いずれかに記載のアルミ線ケーブル用端子の防水構造において、前記端子円筒部の前記開口されている側から導体がアルミ線からなるケーブルの導体露出部が挿入されて、該導体露出部は前記端子円筒部の径方向に複数のひれ状突起が形成されるように加締められていることを特徴とするものである。   Moreover, the waterproof structure of the aluminum wire cable terminal according to claim 5 of the present invention is the waterproof structure of the aluminum wire cable terminal according to any one of claims 1 to 4, wherein the opening of the terminal cylindrical portion is the opening. The conductor exposed portion of the cable whose conductor is made of aluminum wire is inserted from the side where the conductor is exposed, and the conductor exposed portion is crimped so that a plurality of fin-like protrusions are formed in the radial direction of the terminal cylindrical portion. It is a feature.

このようにしてなる請求項5記載のアルミ線ケーブル用端子の防水構造によれば、前記端子円筒部に挿入した導体露出部を加締めて、端子円筒部の径方向に、複数の、具体的には例えば90度の等間隔で4個のひれ状突起が形成されているので、加締めた部分の曲げ剛性が大幅に大きくなる。そのため優れた防水特性に加え、曲げモーメントなどで加締めた部分が変形し難くい端子構造とすることができる。   According to the waterproof structure for an aluminum wire cable terminal according to claim 5, the conductor exposed portion inserted into the terminal cylindrical portion is caulked, and a plurality of specific examples are provided in the radial direction of the terminal cylindrical portion. Since, for example, four fin-like projections are formed at equal intervals of 90 degrees, the bending rigidity of the crimped portion is greatly increased. Therefore, in addition to excellent waterproof properties, it is possible to obtain a terminal structure in which a portion swaged by a bending moment or the like is not easily deformed.

加えて本発明の請求項6記載のアルミ線ケーブル用端子の防水構造は、請求項1〜請求項4いずれかに記載のアルミ線ケーブル用端子の防水構造において、前記端子円筒部の前記開口されている側から導体がアルミ線からなるケーブルの導体露出部が挿入されて、該導体露出部は褶曲するように前記端子円筒部と共に加締められて前記ケーブルの軸方向とほぼ直角方向にインデントが形成されていることを特徴とする。   In addition, the waterproof structure of the aluminum wire cable terminal according to claim 6 of the present invention is the waterproof structure of the aluminum wire cable terminal according to any one of claims 1 to 4, wherein the opening of the terminal cylindrical portion is the opening. The exposed conductor portion of the cable whose conductor is made of aluminum wire is inserted from the side where the conductor is exposed, and the exposed conductor portion is crimped together with the terminal cylindrical portion so as to bend, so that the indentation is substantially perpendicular to the axial direction of the cable. It is formed.

このようにしてなる請求項6記載のアルミ線ケーブル用端子の防水構造によれば、端子円筒部の前記導体露出部を収納している部分は導体露出部が褶曲するように加締められて、その結果ケーブル軸方向と略直角なインデントが設けられている。そのためこの端子には、コンパクトな形状で高い引張り強度をも付与することができる。   According to the waterproof structure for an aluminum wire cable terminal according to claim 6, the portion of the terminal cylindrical portion that houses the conductor exposed portion is crimped so that the conductor exposed portion is bent, As a result, an indent that is substantially perpendicular to the cable axial direction is provided. Therefore, high tensile strength can be imparted to the terminal in a compact shape.

さらに本発明の請求項7記載のアルミ線ケーブル用端子の防水構造は、請求項6記載のアルミ線ケーブル用端子の防水構造において、前記インデントは端子円筒部の上面または上下面に設けられていることを特徴とするものである。
この請求項7記載のアルミ線ケーブル用端子の防水構造によれば、前記インデントは加締められた部分、すなわち、端子円筒部の上面または上下面に設けられている。そのためアルミ線は略対称形状に褶曲するように加締められているので、加締めた際の端子のそり変形を軽減することもできる。
Furthermore, the waterproof structure of the aluminum wire cable terminal according to claim 7 of the present invention is the waterproof structure of the aluminum wire cable terminal according to claim 6, wherein the indent is provided on the upper surface or the upper and lower surfaces of the terminal cylindrical portion. It is characterized by this.
According to the waterproof structure for an aluminum wire cable terminal of the seventh aspect, the indent is provided on the crimped portion, that is, the upper surface or the upper and lower surfaces of the terminal cylindrical portion. Therefore, since the aluminum wire is crimped so as to bend in a substantially symmetrical shape, warping deformation of the terminal when crimped can be reduced.

さらにまた本発明の請求項8記載のアルミ線ケーブル用端子の防水構造は、請求項1、請求項2、請求項5〜請求項7いずれかに記載のアルミ線ケーブル用端子の防水構造において、前記常温硬化型の防水性封止材は耐熱性粘着テープまたは液状あるいはペースト状のシリコーンRTVゴムからなることを特徴とするものである。
このようにしてなる請求項8記載のアルミ線ケーブル用端子の防水構造によれば、端子円筒部の開口側において、ケーブルと端子円筒部との隙間を埋める防水性封止材として、例えば耐熱性の粘着テープを用いているので、防水性封止材を端子円筒部に設けた注入孔から注入するものに比して、格段に短時間で、しかも作業性よく防水処理を行なうことができる。
Furthermore, the waterproof structure of the aluminum wire cable terminal according to claim 8 of the present invention is the waterproof structure of the aluminum wire cable terminal according to claim 1, claim 2, or claim 5 to claim 7, The room temperature curable waterproof sealing material is made of a heat resistant adhesive tape or a liquid or pasty silicone RTV rubber.
According to the waterproof structure for an aluminum wire cable terminal according to claim 8, the waterproof sealing material that fills the gap between the cable and the terminal cylindrical portion on the opening side of the terminal cylindrical portion is, for example, heat resistant. Since the adhesive tape is used, the waterproof treatment can be performed in a much shorter time and with better workability than a case where a waterproof sealing material is injected from an injection hole provided in the terminal cylindrical portion.

また本願発明の請求項9記載のアルミ線ケーブル用端子の防水構造は、請求項1〜請求項8いずれかに記載のアルミ線ケーブル用端子の防水構造において、前記端子円筒部に挿入される前記導体露出部の先端側には、前記ケーブルの絶縁外径とほぼ同じ外径の拘束リングが装着されていることを特徴としている。   Moreover, the waterproof structure of the terminal for aluminum wire cables of Claim 9 of this invention is the waterproof structure of the terminal for aluminum wire cables in any one of Claims 1-8, The said inserted in the said terminal cylindrical part. A constraining ring having an outer diameter substantially the same as the insulating outer diameter of the cable is attached to the distal end side of the conductor exposed portion.

このようにしてなる請求項9記載のアルミ線ケーブル用端子の防水構造によれば、前記導体露出部の先端側には前記ケーブルの絶縁外径とほぼ同じ外径の拘束リングが装着されているので、端子円筒部内での導体露出部の遊動を規制できる。また端子円筒部のほぼ中心に導体露出部を位置決めすることもできるし、導体露出部の挿入の際の案内としても利用できる。以上から端子円筒部と導体露出部の調心作業が容易で、接続作業を一層短時間で行なえる効果をも期待できる。   According to the waterproof structure for an aluminum wire cable terminal according to claim 9, a constraining ring having an outer diameter substantially the same as the insulating outer diameter of the cable is attached to the distal end side of the conductor exposed portion. Therefore, the movement of the conductor exposed portion in the terminal cylindrical portion can be restricted. Further, the conductor exposed portion can be positioned substantially at the center of the terminal cylindrical portion, and can also be used as a guide when inserting the conductor exposed portion. From the above, it is easy to align the terminal cylindrical portion and the conductor exposed portion, and it can be expected that the connection operation can be performed in a shorter time.

また本発明の請求項10記載のアルミ線ケーブル用端子の防水構造は、請求項9記載のアルミ線ケーブル用端子の防水構造において、前記拘束リングは前記ケーブルの絶縁被覆を除去した一部からなる有機絶縁材料製リングまたは金属製のリングからなることを特徴とするものである。
この請求項10記載のアルミ線ケーブル用端子の防水構造によれば、ケーブルの先端部でその絶縁被覆を所定長さ剥ぎ取って導体露出部を形成する際、除去する絶縁被覆の一部を残して、これを拘束リングに代えるものである。それ故別途拘束リングを用意し、これを導体露出部の先端部に装着する手間も不要になるので、端子円筒部と導体露出部とを加締めて一体化する一連の作業をより一層短時間で行なえる利点がある。
ところでこの有機絶縁材料製リングは、別途市販のビニルテープなどを巻き付けたものであってもよい。
The waterproof structure for an aluminum wire cable terminal according to claim 10 of the present invention is the waterproof structure for an aluminum wire cable terminal according to claim 9, wherein the restraining ring is formed by removing a part of the insulation coating of the cable. It consists of a ring made of an organic insulating material or a metal ring.
According to the waterproof structure for an aluminum wire cable terminal according to claim 10, when the conductor coating is formed by stripping off the insulation coating at a tip end portion of the cable to leave a part of the insulation coating to be removed. This is replaced with a restraining ring. Therefore, there is no need to prepare a separate constraining ring and attach it to the tip of the exposed conductor, so the series of operations for crimping and integrating the terminal cylindrical part and the exposed conductor is much shorter. There is an advantage that can be done.
By the way, this ring made of an organic insulating material may be one in which a commercially available vinyl tape or the like is separately wrapped.

また前記拘束リングを金属製リングとすると、前述した有機絶縁材料製の拘束リングの効果と同様な効果を期待できると共に、この金属製の拘束リングをこれに被せられている端子円筒部と共に加締めた場合、両者間の摩擦抵抗は増大して、両者はより強く一体化する。そのため、バッテリーケーブルなどのケーブルに大きな引っ張り力が付加されたとしてもケーブルが端子円筒部からより抜け難くなる、という効果も期待できる。尚、この金属製リングはアルミ線材などを巻き付けたものであってもよい。   If the restraint ring is made of a metal ring, the same effect as that of the restraint ring made of an organic insulating material can be expected, and the metal restraint ring is crimped together with the terminal cylindrical portion covered by the restraint ring. In this case, the frictional resistance between the two increases and the two are more strongly integrated. Therefore, even if a large pulling force is applied to a cable such as a battery cable, an effect that the cable is more difficult to be removed from the terminal cylindrical portion can be expected. The metal ring may be one in which an aluminum wire is wound.

以上のように本発明によれば、銅または銅系の材料からなる端子に、ケーブルを構成する心線(導体)がアルミ線からなるケーブルを接続するような、いわゆる異種金属同士を接続して接続端子を構成する場合にあっても、この接続端子部に優れた防水構造を施すことができ、もってアルミ線が電食によって腐食され難い、それ故長期に亘って信頼性の高い、アルミ線ケーブルの接続端子部を提供することができる。   As described above, according to the present invention, so-called dissimilar metals are connected to a terminal made of copper or a copper-based material, such as a cable in which the core wire (conductor) constituting the cable is made of an aluminum wire. Even when the connection terminal is configured, the connection terminal portion can be provided with an excellent waterproof structure, and the aluminum wire is not easily corroded by electric corrosion, and therefore, the aluminum wire is highly reliable for a long time. A connection terminal portion of the cable can be provided.

以下に本発明のアルミ線ケーブル用端子の防水構造の実施例を数例図1〜図9により詳細に説明する。   Several examples of the waterproof structure of the terminal for an aluminum wire cable according to the present invention will be described below in detail with reference to FIGS.

図1は、本願発明のアルミ線ケーブル用端子の防水構造の第一実施例を示している。図1(a)はアルミ線バッテリーケーブル用端子、具体的には後述する端子円筒部を作成する前の状態の銅合金製のパイプ1の一部断面平面図である。このパイプ1を扁平に圧潰して端子部5を形成する範囲のパイプの内面には、予めRTVシリコーンゴムなどのシーリング材からなる防水性封止材2が塗布されているが、場合によってはブチルゴムなどを主成分とする粘着性の材料からなる防水性封止材を塗布してもよい。ここで符号3はパイプ1の他端側に設けた注入孔であって、この注入孔3を介して、後述するRTVシリコーンゴムなどからなるシーリング材、すなわち、防水性封止材2を注入充填する。因みにこの注入孔3はパイプ1の他端側にあってその周方向に等間隔で複数個、この例では4個設けられている。   FIG. 1 shows a first embodiment of the waterproof structure for an aluminum wire cable terminal of the present invention. FIG. 1A is a partial cross-sectional plan view of a copper alloy pipe 1 in a state before a terminal for an aluminum wire battery cable, specifically, a terminal cylindrical portion described later is formed. A waterproof sealing material 2 made of a sealing material such as RTV silicone rubber is applied in advance to the inner surface of the pipe in a range where the terminal portion 5 is formed by crushing the pipe 1 flatly. You may apply the waterproof sealing material which consists of an adhesive material which has as a main component. Reference numeral 3 denotes an injection hole provided on the other end side of the pipe 1, and a sealing material made of RTV silicone rubber, which will be described later, that is, a waterproof sealing material 2 is injected and filled through the injection hole 3. To do. Incidentally, a plurality of injection holes 3 are provided at equal intervals in the circumferential direction on the other end side of the pipe 1, and four in this example.

図1(b)は、前記パイプ1の一端部を扁平に加締めて得た端子円筒部4を示す半断面平面図である。この扁平に加締めた部分、すなわち端子部5には、端子取付け穴6が穿たれている。ところでこの図では前記端子部5は端子円筒部4の中心軸上に来るように上下方向から同量扁平状に加締められている。
尚、前記銅合金製のパイプ1は加工成形を便ならしめるため、必要に応じて予め熱処理して調質した材料を使用する。
FIG. 1B is a half sectional plan view showing the terminal cylindrical portion 4 obtained by caulking one end of the pipe 1 flatly. A terminal mounting hole 6 is formed in the flat crimped portion, that is, the terminal portion 5. By the way, in this figure, the said terminal part 5 is crimped by the same amount flat shape from the up-down direction so that it may be on the center axis | shaft of the terminal cylindrical part 4. FIG.
The copper alloy pipe 1 uses a material that has been heat-treated and tempered in advance, if necessary, in order to facilitate processing and forming.

図1(c)は、図1(b)の端子円筒部4の開口側から、アルミ撚り線からなるバッテリーケーブル7の先端部の導体露出部9を、その先端が端子円筒部4の奥に接触する状態まで挿入し、しかる後その挿入部を加締めた状態を示す平面図である。
ところで前記導体露出部9は、バッテリーケーブル7の先端の絶縁被覆8を所定長さ、具体的には、絶縁被覆8を剥いで心線が露出された導体露出部9が、端子円筒部4の開口端部より内側に完全に隠れる長さ剥ぎ取って形成したものである。この導体露出部9を端子円筒部4内挿入し、挿入した導体露出部9を内包している端子円筒部4を、端子円筒部4の外側から加締めて、図1(c)が示すように径方向に複数のひれ状突起10を形成している。
また端子円筒部4の開口側においては、注入孔3から常温硬化型の防水性封止材12、例えばRTVシリコーンゴムなどが充填されて固化されている。
FIG. 1C shows the conductor exposed portion 9 at the tip of the battery cable 7 made of a twisted aluminum wire from the opening side of the terminal cylindrical portion 4 in FIG. It is a top view which shows the state which inserted until it contacted and crimped the insertion part after that.
By the way, the conductor exposed portion 9 has a predetermined length of the insulating coating 8 at the tip of the battery cable 7, specifically, the conductor exposed portion 9 from which the core wire is exposed by stripping the insulating coating 8 is the terminal cylindrical portion 4. It is formed by stripping the length completely hidden inside the opening end. As shown in FIG. 1C, the conductor exposed portion 9 is inserted into the terminal cylindrical portion 4 and the terminal cylindrical portion 4 containing the inserted conductor exposed portion 9 is crimped from the outside of the terminal cylindrical portion 4. A plurality of fin-like protrusions 10 are formed in the radial direction.
On the opening side of the terminal cylindrical portion 4, a normal temperature curable waterproof sealing material 12 such as RTV silicone rubber is filled from the injection hole 3 and solidified.

図1(d)は、図1(c)の状態のアルミ線ケーブル用端子の防水構造の半断面側面図である。この図で端子円筒部4内に挿入され、加締められて端子円筒部4と一体化されている導体露出部9の先端部には、端子部5が加締めにより形成された際、パイプ1の内面に予め塗布されていた防水性封止材2が変形して流れ込んできた残渣物が粘着あるいは固化した形状を示しており、端子部5側の防水性を高める一役を担っている。また図(e)は、図1(c)のA−A断面図である。   FIG.1 (d) is a half section side view of the waterproof structure of the terminal for aluminum wire cables of the state of FIG.1 (c). In this figure, when the terminal portion 5 is formed by caulking at the tip of the conductor exposed portion 9 inserted into the terminal cylindrical portion 4 and crimped and integrated with the terminal cylindrical portion 4, the pipe 1 The waterproof sealing material 2 previously applied to the inner surface of the adhesive member has a shape in which the residue that has been deformed and flowed in is adhered or solidified, and plays a role in improving the waterproof property of the terminal portion 5 side. Moreover, FIG. (E) is AA sectional drawing of FIG.1 (c).

図1に示す実施例をより具体的に説明すると以下の通りである。図1において、銅または銅合金製のパイプ1の寸法は、外径は16mm、肉厚は1mmである。またバッテリーケーブル7の心線(導体)はアルミ撚り線からなっていて、このアルミ撚り線に被覆されている絶縁被覆8を合わせたバッテリーケーブルの外径は10.4mmである。それ故、端子円筒部4の開口側の内側において、バッテリーケーブル7と端子円筒部4の内壁との隙間は全体で3.6mm、よって片側の隙間Gは1.8mmになっている。また、導体露出部9の外径は7.8mmなので、端子円筒部4との隙間は片側で3.1mmである。   The embodiment shown in FIG. 1 will be described in more detail as follows. In FIG. 1, the pipe 1 made of copper or copper alloy has an outer diameter of 16 mm and a wall thickness of 1 mm. The core wire (conductor) of the battery cable 7 is made of an aluminum stranded wire, and the outer diameter of the battery cable including the insulating coating 8 covered with the aluminum stranded wire is 10.4 mm. Therefore, on the inner side of the opening side of the terminal cylindrical portion 4, the gap between the battery cable 7 and the inner wall of the terminal cylindrical portion 4 is 3.6 mm as a whole, and thus the gap G on one side is 1.8 mm. Moreover, since the outer diameter of the conductor exposed part 9 is 7.8 mm, the clearance with the terminal cylindrical part 4 is 3.1 mm on one side.

前記実施例のアルミ線バッテリーケーブル用端子の防水構造の製作手順は以下の通りである。
まず図1(a)のように、一端側、すなわち端子部5を形成する部分の内側に、予め防水性封止材2が塗布されているパイプ1の一端を、図(b)のように扁平に加締めて端子部5を形成する。同時に、端子部5に端子取付け穴6を打ち抜き成形する。
次にバッテリーケーブル7の先端部で絶縁被覆8を所定長さ除去して形成した導体露出部9を図1(c)が示すように端子円筒部4の奥部に挿入して、導体露出部9が挿入されている部分の端子円筒部4を図2が示すダイスセット20で半径方向に加締め、導体露出部9と端子円筒部4とを強固に一体化する。ダイスセット20の加締めにより、この例では図1(c)のA−A断面図である図1(e)が示すように、端子円筒部4の径方向にひれ状突起10が4個形成される。
The manufacturing procedure of the waterproof structure of the terminal for the aluminum wire battery cable of the embodiment is as follows.
First, as shown in FIG. 1 (a), one end of the pipe 1 to which the waterproof sealing material 2 is applied in advance on one end side, that is, the inside of the portion that forms the terminal portion 5, is shown in FIG. 1 (b). The terminal portion 5 is formed by caulking flatly. At the same time, the terminal mounting hole 6 is punched and formed in the terminal portion 5.
Next, a conductor exposed portion 9 formed by removing the insulating coating 8 by a predetermined length from the tip of the battery cable 7 is inserted into the inner portion of the terminal cylindrical portion 4 as shown in FIG. The portion of the terminal cylindrical portion 4 in which 9 is inserted is caulked in the radial direction with a die set 20 shown in FIG. 2, and the conductor exposed portion 9 and the terminal cylindrical portion 4 are firmly integrated. By crimping the die set 20, in this example, four fin-shaped projections 10 are formed in the radial direction of the terminal cylindrical portion 4 as shown in FIG. Is done.

ところで、端子円筒部4の外径が導体露出部9のそれより大きいため、ダイスセット20による加締めの結果、縮径した端子円筒部4の余長部分が十字状のひれ状突起10となって現れる。尚、ひれ状突起10の発生個数がこの実施例では4個であるが、これに限るものではない。但し、3個以上の場合には、ひれ状突起10の部分における曲げ剛性が高まり、この端子は曲げモーメントなどを受けても変形し難くなり、好ましい。   By the way, since the outer diameter of the terminal cylindrical portion 4 is larger than that of the conductor exposed portion 9, as a result of caulking by the die set 20, the extra length portion of the terminal cylindrical portion 4 whose diameter has been reduced becomes a cross-shaped fin-shaped protrusion 10. Appear. Although the number of the fin-like projections 10 is four in this embodiment, the number is not limited to this. However, when the number is three or more, the bending rigidity in the fin-like projection 10 is increased, and this terminal is not easily deformed even when subjected to a bending moment or the like, which is preferable.

導体露出部9の部分の加締めが完了したら、図1(d)が示すように、例えば前記防水性封止材2と同じ材料であるRTVシリコーンゴムなどの防水性封止材12を、端子円筒部4の開口側の複数の注入孔3から注入充填する。   When the caulking of the conductor exposed portion 9 is completed, as shown in FIG. 1D, a waterproof sealing material 12 such as RTV silicone rubber, which is the same material as the waterproof sealing material 2, is connected to the terminal. Injection filling is performed from a plurality of injection holes 3 on the opening side of the cylindrical portion 4.

図2を用いて前述したダイスセット20を説明する。図2は導体露出部9が入った端子円筒部4を規定の寸法に圧縮した(加締めた)状態を示す断面図である。円形形状をなすダイスを4分割したダイス21を外側から半径方向内側に向かって均等に移動させ、導体露出部9が挿入されている部分を端子円筒部4と一緒に加締めて、前述した図1(e)に示すように周方向にひれ状突起10を等間隔で4個形成した。図2における符号22はスペーサで、4分割したダイス21の一方側に設置されている。またSはスペーサ22によって形成されるダイス21、21間の隙間で、通常端子円筒部4の肉厚のほぼ2倍程度に設定されており、この隙間に端子円筒部4の余長部分が入り込んでひれ状突起10を形成するのである。   The above-described die set 20 will be described with reference to FIG. FIG. 2 is a cross-sectional view showing a state in which the terminal cylindrical portion 4 including the conductor exposed portion 9 is compressed (clamped) to a predetermined size. The dice 21 formed by dividing a circular die into four parts are moved evenly from the outside toward the inside in the radial direction, and the portion where the conductor exposed portion 9 is inserted is crimped together with the terminal cylindrical portion 4, and the above-described figure. As shown in 1 (e), four fin-like projections 10 were formed at equal intervals in the circumferential direction. Reference numeral 22 in FIG. 2 denotes a spacer, which is installed on one side of the dice 21 divided into four parts. Further, S is a gap between the dies 21 formed by the spacer 22 and is usually set to about twice the wall thickness of the terminal cylindrical portion 4, and the extra length portion of the terminal cylindrical portion 4 enters the gap. Thus, the fin-shaped protrusion 10 is formed.

以上のようにしてなる本発明のアルミ線ケーブル、例えばアルミ線バッテリーケーブル用端子の防水構造の実施例によれば、導体露出部9が挿入された先端方向、すなわち端子部5側は、その内側に防水性封止材2が塗布された状態で加締められているため、優れた防水特性を有している。一方端子円筒部4の開口側にあっては、端子円筒部4とバッテリーケーブル7との隙間には、やはり防水性封止材12が注入充填されているので、この開口側の防水特性も極めて優れたものになっている。
それ故、銅または銅合金製の端子円筒部4とアルミ線からなるケーブルを接続して端子を形成しても、アルミ線に直接雨水などの水分が触れる恐れはなく、それ故電食などによる腐食を極めて効果的に防止することができる。その結果、長期に亘って信頼線の高いアルミ線ケーブル用端子を提供することができる。
また防水性封止材12が常温硬化型の封止材であるため短時間で防水性封止材12が固化する。そのため、より短時間でアルミ線ケーブル用端子部を水密構造にすることができる。
According to the embodiment of the waterproof structure of the aluminum wire cable of the present invention as described above, for example, the terminal for the aluminum wire battery cable, the tip direction in which the conductor exposed portion 9 is inserted, that is, the terminal portion 5 side is the inside thereof. Since it is crimped in a state where the waterproof sealing material 2 is applied, it has excellent waterproof properties. On the other hand, on the opening side of the terminal cylindrical portion 4, the waterproof sealing material 12 is also injected and filled in the gap between the terminal cylindrical portion 4 and the battery cable 7. It is excellent.
Therefore, even if the terminal cylindrical portion 4 made of copper or copper alloy is connected to a cable made of aluminum wire to form a terminal, there is no fear that moisture such as rainwater directly touches the aluminum wire. Corrosion can be prevented very effectively. As a result, it is possible to provide an aluminum wire cable terminal having a high reliability line over a long period of time.
Moreover, since the waterproof sealing material 12 is a room temperature curing type sealing material, the waterproof sealing material 12 solidifies in a short time. Therefore, the terminal part for aluminum wire cables can be made into a watertight structure in a shorter time.

加えて導体露出部9と端子円筒部4とを加締めて一体化する際、径方向に複数個、より効果的には3個以上ひれ状突起10が現れるように加締めているので、この端子の加締め部の曲げ剛性が向上し、曲げモーメントを受けても端子が変形し難くなる。この点からも長期信頼性が高いアルミ線ケーブル用端子の防水構造を得ることができる。
またこの端子が振動や繰り返し曲げを受けても、曲げの基点となる端子円筒部4の開口部側にあっては、ケーブルの外周には弾性を有する防水性封止材12が施されているので、振動曲げ応力を防水性封止材12が一部吸収し、緩和する。よって例えばバッテリーケーブル7の端子円筒部4の開口部近傍における絶縁被覆8の振動曲げ応力が緩和されて、絶縁被覆8などに亀裂などが生じ難くなる。そのため外部からの水分の侵入はこの点からも起こり難くなり、アルミ線の電食も起こり難くなる。
In addition, when the conductor exposed portion 9 and the terminal cylindrical portion 4 are integrated by caulking, the caulking projections 10 are caulked so that a plurality, more effectively 3 or more fin-shaped projections 10 appear in the radial direction. The bending rigidity of the crimped portion of the terminal is improved, and the terminal is hardly deformed even when a bending moment is applied. Also from this point, a waterproof structure of the aluminum wire cable terminal having high long-term reliability can be obtained.
Further, even if this terminal is subjected to vibration or repeated bending, a waterproof sealing material 12 having elasticity is applied to the outer periphery of the cable on the opening side of the terminal cylindrical portion 4 which is a base point of bending. Therefore, the waterproof sealing material 12 partially absorbs and relaxes the vibration bending stress. Therefore, for example, the vibration bending stress of the insulating coating 8 in the vicinity of the opening of the terminal cylindrical portion 4 of the battery cable 7 is relieved, so that the insulating coating 8 and the like are hardly cracked. Therefore, the entry of moisture from the outside hardly occurs from this point, and the electrolytic corrosion of the aluminum wire hardly occurs.

次に図3及び図4に本発明のアルミ線ケーブル用端子の防水構造の第二実施例を示す。図3に示す端子円筒部4が前記図1に示したものと異なる点は、銅または銅合金からなるパイプ1の一端を扁平状に加締めて端子部5を形成する際、端子部5の位置がパイプ1の中心軸線上でなく、下方に形成されている点である。すなわち端子円筒部4全体がかまぼこ形状に形成されている点が図1のものと異なっている。それ以外の点は図1に示したものと同じであるので、詳細な説明は省略する。   Next, FIGS. 3 and 4 show a second embodiment of the waterproof structure for the aluminum wire cable terminal of the present invention. The terminal cylindrical part 4 shown in FIG. 3 is different from that shown in FIG. 1 in that when the terminal part 5 is formed by crimping one end of a pipe 1 made of copper or copper alloy into a flat shape, The position is not on the central axis of the pipe 1 but on the lower side. That is, the point cylindrical part 4 is entirely different from that shown in FIG. Since the other points are the same as those shown in FIG. 1, detailed description thereof is omitted.

図3に示す端子円筒部4にバッテリーケーブル7を接続する手順を図4を用いて説明する。
図4(a)のようにバッテリーケーブル7の先端部において絶縁被覆8の一部を剥ぎ取って導体であるアルミ撚り線を露出させて導体露出部9を形成する。このとき有機絶縁材料からなる絶縁被覆8の一部を導体露出部9の先端側に拘束リング16として残して、アルミ撚り線のばらけを防止した。次に導体露出部9の後端、すなわちバッテリーケーブル7の絶縁被覆8の先端部に、例えば耐熱性粘着テープ17を10〜20mmの幅で巻回し、この耐熱性粘着テープ17を巻いた後の外径が端子円筒部4の内径よりもやや小径となるようにした。
ここで耐熱性粘着テープ17としては通常120℃以上の耐熱特性をもっていれば、自動車用のバッテリーケーブル用端子として問題なく使用することができる。
A procedure for connecting the battery cable 7 to the terminal cylindrical portion 4 shown in FIG. 3 will be described with reference to FIG.
As shown in FIG. 4A, a part of the insulating coating 8 is peeled off at the tip of the battery cable 7 to expose the aluminum stranded wire as a conductor to form a conductor exposed portion 9. At this time, a part of the insulating coating 8 made of an organic insulating material was left as a restraining ring 16 on the tip end side of the conductor exposed portion 9 to prevent the aluminum strands from being scattered. Next, a heat-resistant adhesive tape 17 is wound around the rear end of the conductor exposed portion 9, that is, the front end portion of the insulation coating 8 of the battery cable 7 with a width of 10 to 20 mm, for example, and the heat-resistant adhesive tape 17 is wound. The outer diameter was made slightly smaller than the inner diameter of the terminal cylindrical portion 4.
Here, the heat-resistant adhesive tape 17 can be used without any problem as a battery cable terminal for an automobile as long as it has a heat resistance characteristic of 120 ° C. or higher.

ところで、拘束リング16は絶縁被覆8を利用したものに限らず、市販のビニルテープなどを巻き付けて使用してもよい。また別途金属製のリングに替えることもできる。このように拘束リング16を金属製のリング、例えば硬・軟アルミ線材やテープ材あるいは軟アルミ材のスリーブなどとすることにより、端子部からバッテリーケーブル7が引き抜かれようとした場合、端子円筒部4と金属製の拘束リング16が加締められて一体化しているため、端子に加締められたアルミ線の引き抜け荷重を大幅に高めることができる。
その理由は、端子円筒部4と導体露出部9を加締めて一体化する際、導体露出部9を金属製の拘束リング16と共に端子円筒部4と一体で加締めれば、拘束リング16が端子円筒部4の内面との摩擦抵抗を増加させ、拘束リング16が引き抜き張力に対する大きな抵抗要素となるためである。
By the way, the restraining ring 16 is not limited to the one using the insulating coating 8, and may be used by wrapping a commercially available vinyl tape or the like. It can also be replaced with a metal ring. In this way, when the restraint ring 16 is made of a metal ring, for example, a hard / soft aluminum wire, a tape material, or a sleeve of soft aluminum material, when the battery cable 7 is to be pulled out from the terminal portion, the terminal cylindrical portion Since 4 and the metal restraining ring 16 are crimped and integrated, the pull-out load of the aluminum wire crimped to the terminal can be greatly increased.
The reason is that when the terminal cylindrical portion 4 and the conductor exposed portion 9 are integrated by crimping, if the conductor exposed portion 9 is crimped integrally with the terminal cylindrical portion 4 together with the metal constraining ring 16, the constraint ring 16 is connected to the terminal. This is because the frictional resistance with the inner surface of the cylindrical portion 4 is increased, and the restraining ring 16 becomes a large resistance element against the pulling tension.

尚、拘束リング16が金属製の場合は、端子部5との導通の問題が起こらないから、拘束リング16はアルミ線の導体露出部9の一部を覆うようにしてもよいし、または全部覆うようにしてもどちらでもよい。あるいはまた予め導体露出部9に圧着しておいてもよい。さらには複数個の金属製の拘束リング16を導体露出部9に間欠的に圧着しておいてもよい。尚、バッテリーケーブル7の線露出部9の大部分を金属製の拘束リング16が覆うようにした場合には、加締め部のケーブルの断面積が増加するので接続抵抗を低減できて好ましい。   When the restraint ring 16 is made of metal, the problem of conduction with the terminal portion 5 does not occur. Therefore, the restraint ring 16 may cover a part of the conductor exposed portion 9 of the aluminum wire or may be entirely covered. Either may be covered. Alternatively, it may be crimped to the conductor exposed portion 9 in advance. Furthermore, a plurality of metal restraining rings 16 may be intermittently pressure-bonded to the conductor exposed portion 9. In addition, when most of the line exposure part 9 of the battery cable 7 is covered with the metal restraining ring 16, the cross-sectional area of the cable of the caulking part increases, which is preferable because the connection resistance can be reduced.

さて図4(a)のように端部が処理されたバッテリーケーブル7を、図4(b)に示すように端子円筒部4の開口側から端子円筒部4内に挿入する。次に挿入された導体露出部9を端子円筒部4の外側から加締めて、加締め面が図4(c)及び図4(d)が示すように、端子円筒部4の上面または上下面に波状のインデント18を有するように形成した。もちろんインデント18を設けずに平板状に加締めてもよいが、インデント18を設けると、インデント18を設けない場合に比して、端子円筒部4内部の導体露出部9がバッテリーケーブル7の軸方向に褶曲しているため、より一層引っ張りに対する大きな抵抗要素となり、端子円筒部4から抜け難くなる。
以上から判るように、より大きな引張り力がバッテリーケーブル7に付加する恐れがある場合には、前述した拘束リング16を金属製にし、かつ加締め部分にインデント18を設ければよい。
このようにインデント18を端子円筒部4の上面または上下面に設けておくと、アルミ線は略対称形状に褶曲するように加締められるので、加締めた部分のそり変形を軽減することもできる。
Now, the battery cable 7 whose end portion is processed as shown in FIG. 4A is inserted into the terminal cylindrical portion 4 from the opening side of the terminal cylindrical portion 4 as shown in FIG. 4B. Next, the inserted conductor exposed portion 9 is crimped from the outside of the terminal cylindrical portion 4, and the crimped surface is the upper surface or upper and lower surfaces of the terminal cylindrical portion 4 as shown in FIGS. 4 (c) and 4 (d). And having a wavy indent 18. Of course, the plate may be crimped without providing the indent 18. However, when the indent 18 is provided, the exposed conductor portion 9 inside the terminal cylindrical portion 4 is connected to the axis of the battery cable 7 as compared with the case where the indent 18 is not provided. Since it bends in the direction, it becomes a larger resistance element against pulling and becomes difficult to come off from the terminal cylindrical portion 4.
As can be seen from the above, when there is a possibility that a larger tensile force is applied to the battery cable 7, the above-described restraining ring 16 may be made of metal and the indent 18 may be provided at the crimped portion.
When the indent 18 is provided on the upper surface or the upper and lower surfaces of the terminal cylindrical portion 4 in this way, the aluminum wire is crimped so as to bend in a substantially symmetrical shape, so that warping deformation of the crimped portion can be reduced. .

また前述した端子円筒部4と導体露出部9とを加締めて一体化するのと同時に、あるいは別工程で、耐熱性粘着テープ17の巻回幅相当部分の端子円筒部4を、符号19が示すように、外側から軽くリング状あるいは6〜8角形に加締めて開口部分の隙間を消滅させて、端子円筒部4の内面と耐熱性粘着テープ17とを粘着させておく。このようにすれば耐熱性粘着テープ17の弾性でバッテリーケーブル7の絶縁被覆8も押圧され、端子円筒部4、耐熱性粘着テープ17及び絶縁被覆8の三者間をより水密構造にできる。すなわち端子円筒部4の開口側を簡単に水密構造にすることができ、バッテリーケーブル7を伝って端子円筒部4内に雨水などが侵入してくるのを確実に防止することができる。   In addition, the terminal cylindrical portion 4 corresponding to the winding width of the heat-resistant adhesive tape 17 is denoted by reference numeral 19 at the same time as the terminal cylindrical portion 4 and the conductor exposed portion 9 are integrated by crimping or in a separate process. As shown, the inner surface of the terminal cylindrical portion 4 and the heat resistant adhesive tape 17 are adhered to each other by lightly caulking from the outside into a ring shape or a 6-8 octagon to eliminate the gap in the opening. If it does in this way, the insulation coating 8 of the battery cable 7 will also be pressed by the elasticity of the heat resistant adhesive tape 17, and the three parts of the terminal cylindrical part 4, the heat resistant adhesive tape 17, and the insulation coating 8 can be made more watertight. That is, the opening side of the terminal cylindrical portion 4 can be easily made into a watertight structure, and rainwater and the like can be reliably prevented from entering the terminal cylindrical portion 4 through the battery cable 7.

次に図5に本願発明のアルミ線バッテリーケーブル用端子の防水構造の第三実施例を示す。図5(a)は半断面側面図、図5(b)は平面図である。
前記図4に示すものとの大きな違いは、端子円筒部4の開口側に大径部25を設けた点である。端子円筒部4をこのような形状にすると、導体露出部9が挿入される部分では導体露出部9と端子円筒部4との隙間を小さくでき、バッテリーケーブル7と端子円筒部4との隙間は防水性封止材12を充填するのに必要な隙間を提供できるので好ましい。
Next, FIG. 5 shows a third embodiment of a waterproof structure for an aluminum wire battery cable terminal according to the present invention. FIG. 5A is a half sectional side view, and FIG. 5B is a plan view.
A major difference from that shown in FIG. 4 is that a large diameter portion 25 is provided on the opening side of the terminal cylindrical portion 4. When the terminal cylindrical portion 4 is formed in such a shape, the gap between the conductor exposed portion 9 and the terminal cylindrical portion 4 can be reduced in the portion where the conductor exposed portion 9 is inserted, and the gap between the battery cable 7 and the terminal cylindrical portion 4 is reduced. It is preferable because a gap necessary for filling the waterproof sealing material 12 can be provided.

尚、注意する点は、これはすべての実施例に共通することであるが、防水性封止材2や防水性封止材12は、端子円筒部4やアルミ撚り線からなる導体露出部9に直接触れるので、アルミや銅に対して腐食などの有害な作用のないものであることが重要である。この観点から常温硬化型のRTVシリコーンゴムなどからなる防水性封止材2、12としては、脱アセトン型や脱アルコール型のシーリング材とすることが好ましい。
因みに、脱オキシム型や脱酢酸型のものは、硬化時にオキシムガスや酢酸ガスが発生し、特に銅系の金属を腐食するので好ましくない。
It should be noted that although this is common to all the embodiments, the waterproof sealing material 2 and the waterproof sealing material 12 are the terminal cylindrical portion 4 and the conductor exposed portion 9 made of an aluminum stranded wire. It is important that it has no harmful effects such as corrosion on aluminum and copper. From this point of view, the waterproof sealing materials 2 and 12 made of room temperature curing type RTV silicone rubber or the like are preferably a deacetone type or a dealcohol type sealant.
Incidentally, the deoxime type and the deacetic acid type are not preferable because oxime gas and acetic acid gas are generated at the time of curing and corrode copper-based metals in particular.

またバッテリーケーブル7の絶縁被覆8は、燃焼時にダイオキシンやハロゲン系ガスを出さないハロゲンフリーな材料が使用されており、例えばポリオレフィン樹脂をベースに種々の難燃剤やブチルゴムなどを適宜配合した材料が使用されている。また導体としてはアルミ撚り線が使用されているが、もちろん撚り線ではなく単線であってもよい。但し、自動車の車内配線用として使用する場合には、配線スペースが狭いため、バッテリーケーブルにはより可撓性が求められる。その場合には、単線よりも撚り線である方が好ましい。また可撓性が増すようにロープ撚り構造のアルミ撚り線絶縁被覆電線とすることもできる。すなわち、前記ロープ撚り構造のアルミ撚り線絶縁被覆電線はストランド心の撚り方向と外側のストランドの撚り方向を同方向としたアルミ撚り線を使用することによって可撓性が増すので、エンジンルームその他における配索作業を一段と効率化できる。もちろんこのような構造に拘らなくてもよいことはいうまでもない。   Further, the insulation coating 8 of the battery cable 7 is made of a halogen-free material that does not emit dioxin or a halogen-based gas during combustion. For example, a material in which various flame retardants and butyl rubber are appropriately blended based on a polyolefin resin is used. Has been. Moreover, although the aluminum strand wire is used as a conductor, of course, a single wire may be sufficient instead of a strand wire. However, when used for in-car wiring of automobiles, since the wiring space is narrow, the battery cable is required to be more flexible. In that case, a twisted wire is preferable to a single wire. Moreover, it can also be set as the aluminum strand wire insulation coating electric wire of a rope twist structure so that flexibility may increase. That is, the aluminum stranded wire insulated covered electric wire having the twisted rope structure has increased flexibility by using an aluminum stranded wire in which the stranded direction of the strand core and the stranded direction of the outer strand are in the same direction. The routing work can be made more efficient. Of course, it is needless to say that such a structure is not necessarily concerned.

ところで防水性封止材12とバッテリーケーブル7の絶縁被覆8との接着性が悪い場合には、前述したように防水性封止材12が硬化後、大径部25を軽く加締めて圧縮して防水性封止材12に弾性変形を与え、防水性封止材12と絶縁被覆8とを弾性を保持しながら強制的に密着させることによっても水密性を高めることができる。
尚、図5では導体露出部9と端子円筒部4とをまだ加締めて一体化していないが、当然のことながら大径部25と端子部5との間で加締めて端子円筒部4からバッテリーケーブル7が抜けないようにする。
By the way, when the adhesive property between the waterproof sealing material 12 and the insulation coating 8 of the battery cable 7 is poor, as described above, after the waterproof sealing material 12 is cured, the large diameter portion 25 is lightly swaged and compressed. Watertightness can also be improved by applying elastic deformation to the waterproof sealing material 12 and forcibly bringing the waterproof sealing material 12 and the insulating coating 8 into close contact while maintaining elasticity.
In FIG. 5, the conductor exposed portion 9 and the terminal cylindrical portion 4 are not yet integrated by caulking, but naturally the caulking is performed between the large diameter portion 25 and the terminal portion 5 from the terminal cylindrical portion 4. Prevent the battery cable 7 from being disconnected.

またさらに本発明のアルミ線バッテリーケーブル用端子の防水構造の第四実施例を図6を用いて説明する。
図6は半断面平面図である。図6に示されている実施例の特徴は、有底円筒部11の一端は最初から閉じられているもので、これまで説明した銅または銅合金製のパイプの一端を加締めて密封したものとは異なる。このタイプのものはインパクト成形などによって銅の短尺な丸棒、角棒、線材より製造され、底部が最初から閉じられているため、防水性に注意を払うのは有底円筒部11の他端側の開口側だけである。
Further, a fourth embodiment of the waterproof structure of the terminal for an aluminum wire battery cable according to the present invention will be described with reference to FIG.
FIG. 6 is a half sectional plan view. The feature of the embodiment shown in FIG. 6 is that one end of the bottomed cylindrical portion 11 is closed from the beginning, and one end of the copper or copper alloy pipe described so far is crimped and sealed. Is different. This type is manufactured from short round copper bars, square bars, and wire rods by impact molding, etc., and the bottom part is closed from the beginning, so the other end of the bottomed cylindrical part 11 pays attention to waterproofness. Only the opening side.

図6に示す実施例でも有底円筒部11とバッテリーケーブル7との隙間に、有底円筒部11の開口側において、周方向に設けられた複数の注入孔3から防水性封止材12を注入すればよい。もちろん有底円筒部11とバッテリーケーブル7との間の隙間が大きい場合には、注入孔3を設けないで、バッテリーケーブル7と有底円筒部11とを立てた状態でその隙間に防水性封止材12を上方から充填してもよいことはいうまでもない。
因みに、常温硬化型の防水性封止材12は通常ゲル状であまり流動性がないものが一般的である。それ故、注入孔3は端子円筒部4の周方向に少なくとも2個あるいは等間隔で4個以上設けておくと充填作業が容易で、かつ有底円筒部11とバッテリーケーブル7との隙間にくまなく防水性封止材12を充填でき好ましい。
Also in the embodiment shown in FIG. 6, the waterproof sealing material 12 is provided in the gap between the bottomed cylindrical portion 11 and the battery cable 7 from the plurality of injection holes 3 provided in the circumferential direction on the opening side of the bottomed cylindrical portion 11. Just inject. Of course, when the gap between the bottomed cylindrical part 11 and the battery cable 7 is large, the injection hole 3 is not provided, and the battery cable 7 and the bottomed cylindrical part 11 are stood in a waterproof seal in the gap. Needless to say, the stopper 12 may be filled from above.
Incidentally, the room-temperature-curing waterproof sealing material 12 is generally a gel-like one that is not very fluid. Therefore, if at least two injection holes 3 are provided in the circumferential direction of the terminal cylindrical portion 4 or four or more at equal intervals, the filling operation is easy, and the filling hole 3 is formed in the gap between the bottomed cylindrical portion 11 and the battery cable 7. It is preferable that the waterproof sealing material 12 can be filled.

前述したようにこの第四実施例に限らず他の実施例のものにも同様にいえることであるが、有底円筒部11の開口側、例えば図6に示されているものにあっては大径部25に充填されている防水性封止材12は、それ自身が固化しても弾性を有しているため、端子円筒部4の端面(図6においては大径部25側端面)を基点にバッテリーケーブル7が振動や繰り返し曲げを受けた場合、防水性封止材12の持つ弾性が一部これを吸収する。その結果、この端子の疲労特性が向上する。   As described above, not only in the fourth embodiment but also in other embodiments, the same applies to the opening side of the bottomed cylindrical portion 11, for example, the one shown in FIG. Since the waterproof sealing material 12 filled in the large-diameter portion 25 has elasticity even when it is solidified, the end surface of the terminal cylindrical portion 4 (the end surface on the large-diameter portion 25 side in FIG. 6). When the battery cable 7 is subjected to vibration or repeated bending from the base point, the elasticity of the waterproof sealing material 12 partially absorbs this. As a result, the fatigue characteristics of this terminal are improved.

この観点から防水性封止材12の幅や厚さがどの程度あれば疲労特性がより向上するか調査したところ、例えば、防水性封止材12のクッション作用を有効に機能させるため、図6に示すLgは15mm前後、また有底円筒部11の内径とバッテリーケーブル7との隙間の片側分Gとしては1〜2mm程度の範囲が適当であることがわかった。但し、これらの寸法はケーブルのサイズなどにより最適値が適宜選択される。   From this point of view, it was investigated how much the width and thickness of the waterproof sealing material 12 would improve the fatigue characteristics. For example, in order to effectively function the cushioning action of the waterproof sealing material 12, FIG. Lg is about 15 mm, and it was found that a range of about 1 to 2 mm is appropriate as the one side G of the gap between the inner diameter of the bottomed cylindrical portion 11 and the battery cable 7. However, optimum values for these dimensions are appropriately selected depending on the size of the cable.

また有底円筒部11の開口側で有底円筒部11とバッテリーケーブル7の隙間に防水性封止材12を充填する際に、もしまだ有底円筒部11と導体露出部9とが加締められて一体化されていない場合には、有底円筒部11内で導体露出部9が動いて、例えば導体露出部9が予定の挿入量分、有底円筒部11内に挿入されない恐れもある。そのような場合には、導体露出部9が有底円筒部11内で動かないように、軽く有底円筒部11を加締めて、有底円筒部11と挿入されている導体露出部9とを固定するとよい。   Further, when the waterproof sealing material 12 is filled in the gap between the bottomed cylindrical portion 11 and the battery cable 7 on the opening side of the bottomed cylindrical portion 11, the bottomed cylindrical portion 11 and the conductor exposed portion 9 are still crimped. If it is not integrated, the conductor exposed portion 9 moves in the bottomed cylindrical portion 11, and for example, the conductor exposed portion 9 may not be inserted into the bottomed cylindrical portion 11 by a predetermined insertion amount. . In such a case, the bottomed cylindrical portion 11 is lightly crimped so that the exposed conductor portion 9 does not move in the bottomed cylindrical portion 11, and the bottomed cylindrical portion 11 and the exposed conductor portion 9 inserted It is good to fix.

また図6において、有底円筒部11の開口側から導体露出部9を挿入する際、導体露出部9の心線の先がばらけてしまって、大径部25の奥部に引っ掛かって大径部25の先に繋がる内径の狭い部分に入り難い場合があり得る。そのような場合には図6が示すように大径部25から径の小さい部分に繋がる位置にRあるいはテーパ、さらにはベルマウス状の加工を施しておくと、導体露出部9の挿入が容易になる。因みにRとしては、0.3mm以上3mm以下であることが好ましい。   Further, in FIG. 6, when the conductor exposed portion 9 is inserted from the opening side of the bottomed cylindrical portion 11, the end of the core wire of the conductor exposed portion 9 is scattered, and is caught by the back of the large diameter portion 25. There may be a case where it is difficult to enter a portion having a narrow inner diameter connected to the tip of the diameter portion 25. In such a case, as shown in FIG. 6, it is easy to insert the conductor exposed portion 9 by applying R or taper to the position connecting from the large-diameter portion 25 to the small-diameter portion and further processing like a bell mouth. become. Incidentally, as R, it is preferable that it is 0.3 mm or more and 3 mm or less.

さて図6のように有底円筒部11にバッテリーケーブル7を取り付けたら、板端子40の圧着孔45に有底円筒部11を装着して圧縮または圧着により強固に両部品を固定し、バッテリーケーブル7のアルミ撚り線からなる導体露出部9と板端子40とを電気的及び機械的に接続して一体化する。
これを本発明の第五実施例である図7に示すような自動車用バッテリーのターミナルクランプ41に装着する。因みに、図7(a)は図6の有底円筒部11にバッテリーケーブル7を挿入し、前記有底円筒部11に板端子40の板端子バレル部44を圧縮または圧着して一体化したものを自動車用バッテリーのターミナルクランプ41に組み合わせた場合の平面図で、図7(b)はその側面図ある。
同図において板端子40は、円錐台状の半開口環状体で、中央の取付穴部にバッテリーの+極ターミナル(図示を省略)を差し込んでボルト42とナット43により締付け固定する構造である。
尚、板端子40の圧着孔45の反対側には、図6に示すように、端子部46が形成されており、この端子部46には板端子取付穴47が設けられている。
When the battery cable 7 is attached to the bottomed cylindrical portion 11 as shown in FIG. 6, the bottomed cylindrical portion 11 is attached to the crimping hole 45 of the plate terminal 40, and both parts are firmly fixed by compression or pressure bonding. The conductor exposed part 9 and the plate terminal 40 which consist of 7 aluminum strands are integrated electrically and mechanically.
This is attached to a terminal clamp 41 of an automobile battery as shown in FIG. 7 which is the fifth embodiment of the present invention. Incidentally, FIG. 7A shows an example in which the battery cable 7 is inserted into the bottomed cylindrical portion 11 of FIG. 6, and the plate terminal barrel portion 44 of the plate terminal 40 is integrated with the bottomed cylindrical portion 11 by compression or pressure bonding. FIG. 7B is a side view when FIG. 7 is combined with the terminal clamp 41 of the automobile battery.
In the figure, a plate terminal 40 is a truncated cone-shaped semi-opening annular body, and has a structure in which a positive electrode terminal (not shown) of a battery is inserted into a central mounting hole portion and is fastened and fixed by bolts 42 and nuts 43.
As shown in FIG. 6, a terminal portion 46 is formed on the opposite side of the plate terminal 40 from the crimping hole 45, and a plate terminal mounting hole 47 is provided in the terminal portion 46.

この実施例において、板端子40のバレル部44の長手方向の幅、すなわち長さLcについては、バッテリーケーブル7の断面積が25〜34mmのサイズでは14.5〜20mmの長さであるが、Lcの実長の決定に際しては、バッテリーケーブル7の接続端子からの引抜き荷重や電流容量、その他の種々の要求仕様を満足する長さに適宜選択される。
また、図5に示した構造のものを板端子40に固着する場合も、図7の場合と同様に取付けることができる。
In this embodiment, the longitudinal width of the barrel portion 44 of the plate terminal 40, that is, the length Lc is 14.5 to 20 mm when the cross-sectional area of the battery cable 7 is 25 to 34 mm 2. When determining the actual length of Lc, the length is selected as appropriate so as to satisfy the drawing load from the connection terminal of the battery cable 7, the current capacity, and other various required specifications.
Further, when the structure shown in FIG. 5 is fixed to the plate terminal 40, it can be attached in the same manner as in FIG.

続いて本発明の第六実施例を図8に示す。図8はバッテリーケーブルの分岐構造を示す側面図である。すなわち図8においてはターミナルクランプ41を独立して製作したものに、図6に示すバッテリーケーブル7の端末と同様なアース用分岐ケーブル48を各々別個に製作し、ターミナルクランプ41の端子取付部の両側からサンドイッチ状に挟み込み、ボルト42とナット43とにより共通して締付け固定するようにしたことを特徴とするものである。図9は本発明に使用する板端子40の一例を示す斜視図である。
以上のように構成すると、バッテリーターミナル締付け用のボルト42の締め付け力を調整することにより、分岐角度(θ)を各々の分岐ケーブルに無理な応力を加えることなく調節できる。さらに立体的な配索作業を容易に行うことができる利点もある。
Next, a sixth embodiment of the present invention is shown in FIG. FIG. 8 is a side view showing a branch structure of the battery cable. That is, in FIG. 8, a grounding branch cable 48 similar to the terminal of the battery cable 7 shown in FIG. Is sandwiched between the bolts 42 and the nuts 43, and is clamped and fixed in common. FIG. 9 is a perspective view showing an example of the plate terminal 40 used in the present invention.
If comprised as mentioned above, the branch angle ((theta)) can be adjusted without applying an excessive stress to each branch cable by adjusting the clamping force of the volt | bolt 42 for battery terminal clamping. Further, there is an advantage that a three-dimensional routing operation can be easily performed.

前記各実施例では本発明を主として自動車用のバッテリーケーブルに適用した例を示しているが、本発明はこれに限定されるものではなく、導体がアルミ撚り線あるいはアルミ単線からなる絶縁被覆ケーブルにはすべて適用できるものである。
また有底円筒部11にオープンバレル型の板端子40を圧着または圧縮して固着する方法を説明したが、クローズバレル型の板端子を固着する場合もある。さらに、前記の板端子40を有底円筒部11に固着する場合、予め有底円筒部11にバッテリーケーブル7を圧着または圧縮した後、あるいは有底円筒部11とバッテリーケーブル7および板端子40のバレル部44とを一括同時に圧着または圧縮して一体化するようにしてもよい。
In each of the above embodiments, the present invention is mainly applied to a battery cable for automobiles. However, the present invention is not limited to this, and the present invention is applied to an insulation-coated cable whose conductor is made of an aluminum stranded wire or an aluminum single wire. Are all applicable.
Further, although the method of fixing the open barrel type plate terminal 40 by pressure bonding or compression to the bottomed cylindrical portion 11 has been described, there is a case where the closed barrel type plate terminal is fixed. Further, when the plate terminal 40 is fixed to the bottomed cylindrical portion 11, after the battery cable 7 is pressure-bonded or compressed to the bottomed cylindrical portion 11 in advance, or after the bottomed cylindrical portion 11, the battery cable 7 and the plate terminal 40 are connected. The barrel portion 44 may be integrated by pressure bonding or compression at the same time.

以上述べたように本発明のアルミ線ケーブル用端子の防水構造によれば、銅または銅系の材料からなる端子に、ケーブルを構成する導体がアルミ線からなる、例えばバッテリーケーブルやアースケーブルを接続するような、いわゆる異種金属同士を接続して接続端子部を構成する場合にあっても、この接続端子部に優れた防水構造を施すことができ、もってアルミ線が電食によって腐食され難い、それ故長期に亘って信頼性の高い、アルミ線ケーブルの接続端子部を提供することができる。   As described above, according to the waterproof structure of the aluminum wire cable terminal of the present invention, the conductor constituting the cable is made of an aluminum wire, for example, a battery cable or a ground cable is connected to a terminal made of copper or a copper-based material. Even when the so-called dissimilar metals are connected to each other to form the connection terminal portion, the connection terminal portion can be provided with an excellent waterproof structure, and the aluminum wire is not easily corroded by electrolytic corrosion. Therefore, it is possible to provide a connection terminal portion of an aluminum wire cable that is highly reliable for a long period of time.

本発明のアルミ線ケーブル用端子の防水構造の第一実施例を示すもので、図1(a)はアルミ線ケーブル用端子を作成する前の状態の銅合金製のパイプの一部断面平面図、図1(b)は前記パイプの一端部を扁平に加締めて得た端子円筒部を示す半断面平面図、図1(c)は、図1(b)の端子円筒部の開口側から導体露出部を挿入し、挿入部を加締めた状態を示す平面図、図(d)は、図(c)の状態のものの半断面側面図、そして図(e)は、図1(c)のA−A断面図である。The 1st Example of the waterproof structure of the terminal for aluminum wire cables of this invention is shown, Fig.1 (a) is a partial cross section top view of the pipe made from a copper alloy in the state before producing the terminal for aluminum wire cables FIG. 1 (b) is a half sectional plan view showing a terminal cylindrical portion obtained by crimping one end of the pipe flat, and FIG. 1 (c) is from the opening side of the terminal cylindrical portion in FIG. 1 (b). The top view which shows the state which inserted the conductor exposure part and crimped the insertion part, FIG. (D) is a half cross-sectional side view of the thing of the state of FIG. (C), and FIG. (E) is FIG.1 (c). It is AA sectional drawing. 図1におけるひれ状突起を形成するためにダイスセットで導体露出部入り端子円筒部を規定の寸法に加締めた状態を示す断面図である。It is sectional drawing which shows the state which crimped the terminal cylindrical part containing a conductor exposed part to the prescribed | regulated dimension with the die set in order to form the fin-shaped protrusion in FIG. 本発明の第二実施例に使用される端子円筒部の側面図である。It is a side view of the terminal cylindrical part used for the 2nd example of the present invention. 前記図3に示されている端子円筒部を用いた本発明の第二実施例を示すもので、図4(a)は端子円筒部に挿入する前のケーブルの端末処理を示す側面図、図4(b)は、端子円筒部内に端末処理したケーブルの先端部を挿入した縦断面図、図4(c)は、導体露出部を内包する端子円筒部部分を加締めた状態を示す側面図、図(d)はその平面図である。FIG. 4 shows a second embodiment of the present invention using the terminal cylindrical portion shown in FIG. 3, and FIG. 4 (a) is a side view showing the terminal treatment of the cable before being inserted into the terminal cylindrical portion. 4 (b) is a longitudinal sectional view in which the end portion of the terminal-treated cable is inserted into the terminal cylindrical portion, and FIG. 4 (c) is a side view showing a state where the terminal cylindrical portion including the exposed conductor portion is crimped. FIG. 4D is a plan view thereof. 本発明のアルミ線ケーブル用端子の防水構造の第三実施例を示すもので、図5(a)は半断面側面図、図5(b)は平面図である。The 3rd Example of the waterproof structure of the terminal for aluminum wire cables of this invention is shown, Fig.5 (a) is a half cross-sectional side view, FIG.5 (b) is a top view. 本発明のアルミ線ケーブル用端子の防水構造の第四実施例を示す縦断面図である。It is a longitudinal cross-sectional view which shows the 4th Example of the waterproof structure of the terminal for aluminum wire cables of this invention. 前記図6に示されているアルミ線ケーブル用端子を組み込んだ本発明の第五実施例で、図7(a)は既存の+極用板端子の平面図、図7(b)は図6の端子円筒部をこの+極用板端子に装着した状態を示す側面図である。FIG. 7A is a plan view of an existing positive electrode plate terminal, and FIG. 7B is a plan view of FIG. 6 in the fifth embodiment of the present invention incorporating the aluminum wire cable terminal shown in FIG. It is a side view which shows the state with which this terminal cylindrical part was mounted | worn to this + electrode board terminal. 本発明のアルミ線ケーブル用端子の防水構造の第六実施例で、ケーブルの分岐構造を示す側面図である。It is a side view which shows the branch structure of a cable in the 6th Example of the waterproof structure of the terminal for aluminum wire cables of this invention. 本発明に使用する板端子の一例を示す斜視図である。It is a perspective view which shows an example of the board terminal used for this invention. 従来の問題点を示す分岐ケーブルの一例で、図10(a)と図10(b)は共に平面図である。FIG. 10 (a) and FIG. 10 (b) are plan views of an example of a branch cable showing a conventional problem.

符号の説明Explanation of symbols

1 金属製のパイプ
2 防水性封止材
3 注入孔
4 端子円筒部
5 端子部
6 端子取付け穴
7 バッテリーケーブル
8 絶縁被覆
9 導体露出部
10 ひれ状突起
11 有底円筒部
12 防水性封止材
16 拘束リング
17 耐熱性粘着テープ
18 インデント
20 ダイスセット
25 大径部
40 板端子
41 ターミナルクランプ
42 ボルト
43 ナット
44 バレル部
45 圧着孔
46 端子部
47 板端子取付穴
48 アース用分岐ケーブル
DESCRIPTION OF SYMBOLS 1 Metal pipe 2 Waterproof sealing material 3 Injection hole 4 Terminal cylindrical part 5 Terminal part 6 Terminal mounting hole 7 Battery cable 8 Insulation coating 9 Conductor exposed part 10 Fin-like protrusion 11 Bottomed cylindrical part 12 Waterproof sealing material 16 Restraint ring 17 Heat resistant adhesive tape 18 Indent 20 Die set 25 Large diameter portion 40 Plate terminal 41 Terminal clamp 42 Bolt 43 Nut 44 Barrel portion 45 Crimping hole 46 Terminal portion 47 Plate terminal mounting hole 48 Branch cable for grounding

Claims (10)

一端が密封され他端が開口されている銅または銅系の端子円筒部の前記開口されている側から、導体がアルミ線からなるケーブルの絶縁被覆が所定長さ除去された導体露出部が挿入されて、該導体露出部は加締められて前記端子円筒部と一体化されていて、前記導体露出部の後端側で前記端子円筒部の開口側にあっては、前記端子円筒部と絶縁被覆を有するケーブルとの間に常温硬化型の防水性封止材が充填されて水密構造が形成されていることを特徴とするアルミ線ケーブル用端子の防水構造。   A conductor exposed part in which the insulation coating of the cable made of an aluminum wire is removed by a predetermined length is inserted from the opened side of the copper or copper-based terminal cylindrical part whose one end is sealed and the other end is opened. The conductor exposed portion is crimped and integrated with the terminal cylindrical portion, and is insulated from the terminal cylindrical portion on the opening side of the terminal cylindrical portion on the rear end side of the conductor exposed portion. A waterproof structure for a terminal for an aluminum wire cable, characterized in that a water-tight structure is formed by filling a cable having a coating with a room temperature curing waterproof sealing material. 前記端子円筒部の一端は、両端が開口されているパイプの前記一端側内面に予め防水性封止材が付着されていて、しかる後扁平に加締められて密封されたものであって、かつこの加締められた部分に端子取付け穴が形成されていることを特徴とする請求項1記載のアルミ線ケーブル用端子の防水構造。   One end of the terminal cylindrical portion has a waterproof sealing material attached in advance to the inner surface of the one end side of the pipe having both ends opened, and is then crimped flat and sealed, and 2. The waterproof structure for an aluminum wire cable terminal according to claim 1, wherein a terminal mounting hole is formed in the crimped portion. 前記端子円筒部の開口側近傍には、周方向に前記常温硬化型の防水性封止材が注入される注入孔が少なくとも2箇所以上設けられていることを特徴とする請求項1または請求項2いずれかに記載のアルミ線ケーブル用端子の防水構造。   2. The injection hole into which the room temperature curable waterproof sealing material is injected in the circumferential direction is provided in the vicinity of the opening side of the terminal cylindrical portion in at least two places. 2. The waterproof structure of the terminal for an aluminum wire cable according to any one of the above. 前記端子円筒部はその開口側に、前記導体露出部が挿入され加締められた部分より内径の大きな大径部を有していて、該大径部には周方向に前記常温硬化型の防水性封止材が注入される注入孔が少なくとも2箇所以上設けられていることを特徴とする請求項1〜請求項3いずれかに記載のアルミ線ケーブル用端子の防水構造。   The terminal cylindrical portion has a large-diameter portion having an inner diameter larger than that of the portion where the conductor exposed portion is inserted and crimped on the opening side, and the room-temperature-curing waterproofing is circumferentially provided in the large-diameter portion. The waterproof structure for an aluminum wire cable terminal according to any one of claims 1 to 3, wherein at least two injection holes for injecting the conductive sealing material are provided. 前記端子円筒部の前記開口されている側から導体がアルミ線からなるケーブルの導体露出部が挿入されて、該導体露出部は前記端子円筒部の径方向に複数のひれ状突起が形成されるように加締められていることを特徴とする請求項1〜請求項4いずれかに記載のアルミ線ケーブル用端子の防水構造。   A conductor exposed portion of a cable whose conductor is made of aluminum wire is inserted from the opened side of the terminal cylindrical portion, and the conductor exposed portion has a plurality of fin-like projections formed in the radial direction of the terminal cylindrical portion. The waterproof structure for an aluminum wire cable terminal according to any one of claims 1 to 4, wherein the waterproof structure is crimped as described above. 前記端子円筒部の前記開口されている側から導体がアルミ線からなるケーブルの導体露出部が挿入されて、該導体露出部は褶曲するように前記端子円筒部と共に加締められて前記ケーブルの軸方向とほぼ直角方向にインデントが形成されていることを特徴とする請求項1〜請求項4いずれかに記載のアルミ線ケーブル用端子の防水構造。   A conductor exposed portion of a cable whose conductor is made of an aluminum wire is inserted from the opened side of the terminal cylindrical portion, and the conductor exposed portion is crimped together with the terminal cylindrical portion so as to be bent, and the shaft of the cable The waterproof structure for an aluminum wire cable terminal according to any one of claims 1 to 4, wherein an indent is formed in a direction substantially perpendicular to the direction. 前記インデントは端子円筒部の上面または上下面に設けられていることを特徴とする請求項6記載のアルミ線ケーブル用端子の防水構造。   The waterproof structure for a terminal for an aluminum wire cable according to claim 6, wherein the indent is provided on an upper surface or upper and lower surfaces of the terminal cylindrical portion. 前記常温硬化型の防水性封止材は耐熱性粘着テープまたは液状あるいはペースト状のシリコーンRTVゴムからなることを特徴とする請求項1、請求項2、請求項5〜請求項7いずれかに記載のアルミ線ケーブル用端子の防水構造。   The said normal temperature hardening type waterproofing sealing material consists of a heat resistant adhesive tape or a liquid or paste-like silicone RTV rubber, The claim 1, The claim 2, The claim 5 characterized by the above-mentioned. Waterproof structure for aluminum wire cable terminals. 前記端子円筒部に挿入される前記導体露出部の先端側には、前記ケーブルの絶縁外径とほぼ同じ外径の拘束リングが装着されていることを特徴とする請求項1〜請求項8いずれかに記載のアルミ線ケーブル用端子の防水構造。   9. A restraint ring having an outer diameter substantially the same as an insulating outer diameter of the cable is attached to a distal end side of the conductor exposed portion inserted into the terminal cylindrical portion. The waterproof structure of the terminal for the aluminum wire cable according to the above. 前記拘束リングは前記ケーブルの絶縁被覆を除去した一部からなる有機絶縁材料製リングまたは金属製のリングからなることを特徴とする請求項9記載のアルミ線ケーブル用端子の防水構造。   10. The waterproof structure for an aluminum wire cable terminal according to claim 9, wherein the constraining ring comprises a ring made of an organic insulating material or a metal ring made of a part obtained by removing the insulation coating of the cable.
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