JP4641688B2

JP4641688B2 - Small crimp terminal connection method

Info

Publication number: JP4641688B2
Application number: JP2001288118A
Authority: JP
Inventors: 薫只木
Original assignee: Union Machinery Co Ltd
Current assignee: Union Machinery Co Ltd
Priority date: 2001-09-21
Filing date: 2001-09-21
Publication date: 2011-03-02
Anticipated expiration: 2021-09-21
Also published as: JP2003100413A

Description

【０００１】
【産業上の利用分野】
この発明は小型圧着端子の接続方法、詳しくは、扁平さや状の被挿入部を有する小型圧着端子めす部材と舌片状の挿入部を有する小型圧着端子おす部材とを円滑かつ確実に接続できる方法に関するものである。
【０００２】
【従来の技術】
前方に扁平さや状の被挿入部が、後方に被覆電線の芯線をカシメて固定するバレル部が一体的に形成された小型圧着端子めす部材に、本体基部から舌片状の挿入部が一体的に延設された小型圧着端子おす部材を同軸状に嵌合し、電気的に導通させることは、各種電気機器実装の際に広く行われている。
【０００３】
これら小型圧着端子は、高温、高圧、高振動下等の過酷な環境下で使用される場合も多い為、扁平さや状の被挿入部と舌片状の挿入部との結合は、電気的導通を常に確保し、導通不良が起こらぬ様に、強い力で強固に嵌合させるのが普通である。
【０００４】
【発明が解決しようとする課題】
この結合作業は一方の小型圧着端子部材（多くの場合はめす部材）を固定保持しつつ、これにもう一方の部材を移動させて結合させるのが普通であるが、上述の通り、強い力で嵌合させる為、固定保持も強固に行う必要がある。一般的には、バレル部などを固定保持すれば良い様に思われるが、部材自体が小型の為、加工部分や溶接部位などが極めて接近しており、バレル部など端子部材自体を直接固定保持するのは無理であった。
【０００５】
しかも、何らかの手段により、固定保持の目的でバレル部を強く挟持するとこの部分が変形してしまい、不良品となってしまうおそれがあるので、バレル部の挟持は細心の注意が必要であり、出来得れば避けるべきであった。
【０００６】
この為、端子部材自体はなく、これに接続されている被覆電線の被覆部分を保持することも試みられているが、上述の通り、高温、高圧等過酷な環境下での使用を想定している為、一般的に被覆は硬く、強く挟持しようとしても滑ってしまい、この部分を用いての固定保持は極めて困難であった。又、強く挟持するとこの被覆に痕が残ってしまい、ゴムシールによる防水処理等被覆電線に対する後処理が出来なくなるという重大な問題があった。
【０００７】
しかも、端子部材の固定保持には強い把持力が必要な為、作業者への負担も大きく、開閉装置など補助機材等も必要としていた。
【０００８】
一方、バレル部後縁と被覆電線の被覆先端との間に形成されるわずかな芯線露出部を利用して端子部材の位置固定を行うことも考えられたが、圧着端子において芯線は最もデリケートな部材であると共に最も重要な部材であり、その損傷によるダメージを恐れる余り、この部分を小型圧着端子部材の固定保持に利用することはほとんどタブー視されていた。
【０００９】
本発明者は、小型圧着端子のめす部材とおす部材との結合作業に関する上記問題点を解決すべき鋭意研究を行った結果、部材の固定保持方法を工夫することにより、より確実高精度で結合作業を実施でき、自動化した装置にも適用できる新しい小型圧着端子の接続方法を開発することに成功し、本発明としてここに提案するものである。
【００１０】
【課題を解決するための手段】
前方に扁平さや状の被挿入部が、後方に被覆電線の芯線をカシメて固定するバレル部がそれぞれ一体的に形成されており、前記バレル部の前縁及び後縁にはベルマウス加工が施されている小型圧着端子めす部材の前記被挿入部に、本体基部から舌片状の挿入部が一体的に延設された小型圧着端子おす部材の前記挿入部を嵌入し、小型圧着端子めす部材と小型圧着端子おす部材とを結合する際に、被覆電線の被覆部端面と小型圧着めす部材のバレル部後縁との間に若干の芯線露出部を形成し、この芯線露出部の背後に当て板を位置させると共に、斜め後上方から弾性を有する薄板製の挟持爪の先端面をバレル部後縁上部に当接させ、これによってめす部材の後方へのスライドを阻止しつつ、同一軸芯上に位置させたおす部材の挿入部をめす部材の被挿入部方向へ移動させ、これに嵌入せしめる様にすることによって上記課題を解決せんとするものである。
【００１１】
【実施の形態】
図１はこの発明に係る小型圧着端子の接続方法によって接続する小型圧着端子の平面図、図２はその側面図、図３はその要部の拡大斜視図である。
【００１２】
図中１は小型圧着端子のめす部材、２はそのおす部材であり、めす部材１、おす部材２とも導電性にすぐれた金属板をプレス加工して形成されたものであり、めす部材１は扁平中空さや状の被挿入部３の後方に、筒状のバレル部４が、上方が開方され、側面から見てＵ字形に切欠かれたガイド部５を介して直列状に配置されたものであり、バレル部４はその後縁２５側（図１において右側）から被覆電線６の先端の芯線７を挿入し、カシメて固定する様になっている。
【００１３】
このバレル部４の後縁２５及び前縁２４には、丸く盛り上ったベルマウス２３がそれぞれ形成されており、芯線７をカシメる際、バレル部４の前縁２４及び後縁２５の角部が直接芯線７表面に当たって断線させるのを防ぐ様になっている。又、バレル部４の後縁２５と被覆電線６の被覆８の先端面との間には０．５ｍｍ乃至１ｍｍ程度の芯線露出部９が形成されている。
【００１４】
一方、おす部材２は、本体基部１１から舌片状の挿入部１０が一体的に延設されたものであり、舌片状の挿入部１０は前記めす部材２の被挿入部３に強固かつ確実に嵌入しうる寸法に形成されている。
【００１５】
この実施の形態においては、本体基部１１は略Ｕ字形に折り返された形態となっているが、これはこの本体基部１１にバネ性を有する電極板としての機能を持たせる為であり、本体基部１１が各種用途に応じて様々な形態を呈しても良いことはもちろんである。なお、これら小型圧着端子のめす部材１とおす部材２とは、従来から用いられているものであり、それ自体公知のものである。
【００１６】
次に、本発明に係るこれら小型圧着端子めす部材１とおす部材２との結合方法を説明すると、図４，図５，図６に示す様に被覆電線６をカシメ固定しためす部材１の背面側に当て板２２を当接し、その前方側にはおす部材２をその挿入部１０がめす部材１側を向く様に同軸状に配置する。なお、これら図４，図５，図６においては、当て板２２上にめす部材１を載置する様に描いているが、めす部材１及び当て板３３を立設した状態にして結合作業を行っても良いことはもちろんである。
【００１７】
この状態において、図５及び図６に示す様に、めす部材１のバレル部４の斜め後上方から、バネ性を有する薄板製の挟持爪１５を、その前端面をバレル部４の後縁２５上部に当接させ、この状態のままこの挟持爪１５の前後方向の移動を停止させる。なお、挟持爪１５の前端面２７は、図７に示す様に中央２８が円弧状に切欠かれた略Σ状を呈しており、バレル部４に当接した際、芯線７に触れてこれを切断しない様に配慮されている。
【００１８】
図８はこの挟持爪１５がバレル部４の後縁２５に当接した状態を拡大して描いた部分拡大図であり、挟持爪１５の側面が被覆電線６の被覆前端面２６の角部に当接し、この部分を支点として挟持爪１５の前端面２７がバレル部４の後縁２５に当接しているので、挟持爪１５が芯線７に直接接することはほとんどない。
【００１９】
なお、挟持爪１５のバレル部４の後縁２５への当接はわずかな隙間、わずかな段差を利用して行われるものであり、作業には精密さが要求されるが、挟持爪１５は弾性のある薄板製なので図５に示す様に、この挟持爪１５を弓形に撓ませて被覆電線６の上面にその前端面２７を当接させながらこれに沿ってバレル部４の後縁２５側に滑らせれば、自然とバレル部４の後縁２５上部に当接することになり、その作業に特に困難は伴わない。
【００２０】
この様な状態において、おす部材２をめす部材１方向にスライドさせ、その舌片状の挿入部１０を扁平さや状の被挿入部３に嵌入せしめれば、図９及び図１０に示す様に、おす部材２とめす部材１との結合は完成する。
【００２１】
なお、おす部材２の挿入部１０のめす部材の被挿入部３への嵌入には強い押圧力を要するが、めす部材１は挟持爪１５によってその位置が確実に保持されているので、押圧力に抗し切れずに後退することはなく、結合が不十分になることは全くない。
【００２２】
この実施の形態においては、挟持爪１５によるバレル部４の固定及びおす部材２のめす部材１方向へのスライドはそれぞれ手動によって別々に実施しているが、電動機構、油圧機構等を用いて連動して行う様にしても良いことはもちろんである。
【００２３】
【効果】
この発明に係る圧着端子の接続方法は上記の通りの構成を有し、圧着端子めす部材と被覆電線６の先端との間に形成されるわずかな芯線露出部９を利用して挟持爪１５で挟持するようにしたので、バレル部４や被覆電線６の被覆８を挟持する場合に比べ、挟持がより確実で、芯線を損傷したりバレル部４や被覆８を変形させるおそれもなく、より小さな挟持力で結合作業を実施でき、作業者の負担も小さくてすみ結合作業の効率向上に寄与しうる効果を有し、極めて実用的なものてある。
【図面の簡単な説明】
【図１】この発明に係る小型圧着端子の接続方法において用いる小型圧着端子のめす部材とおす部材の平面図。
【図２】同じく、その側面図。
【図３】同じく、その要部の拡大斜視図。
【図４】この発明に係る小型圧着端子の接続方法を実施する際のめす部材とおす部材及び挟持爪の各部の位置関係を示した平面図。
【図５】同じく、その側面図。
【図６】同じく、その要部の拡大斜視図。
【図７】この発明に係る小型圧着端子の接続方法において用いる挟持爪の斜視図。
【図８】この発明に係る小型圧着端子の接続方法を実施する際のめす部材のバレル部と被覆電線及び挟持爪との相互の位置関係を示した要部の拡大斜視図。
【図９】この発明に係る小型圧着端子の接続方法を用いて接続した小型圧着端子の平面図。
【図１０】同じく、その側面図。
【符号の説明】
１めす部材
２おす部材
３被挿入部
４バレル部
５ガイド部
６被覆電線
７芯線
８被覆
９芯線露出部
１０挿入部
１１本体基部
１５挟持爪
２２当て板
２４前縁
２５後縁
２６被覆先端面
２７前端面[0001]
[Industrial application fields]
The present invention relates to a method for connecting small crimp terminals, and more specifically, a method capable of smoothly and reliably connecting a small crimp terminal female member having a flat or shaped insertion portion and a small crimp terminal male member having a tongue-like insertion portion. It is about.
[0002]
[Prior art]
A tongue-shaped insertion part is integrated from the base of the main body to a small crimp terminal female member that is integrally formed with a flat and shaped insertion part in the front and a barrel part that crimps and fixes the core wire of the covered electric wire in the rear. A small crimp terminal male member extending in the same manner is coaxially fitted and electrically connected to each other when mounting various electrical devices.
[0003]
These small crimp terminals are often used in harsh environments such as high temperatures, high pressures, and high vibrations, so the connection between the flat and shaped insertion part and the tongue-like insertion part is electrically conductive. It is usual to ensure a strong fit with a strong force so as to ensure a constant and no conduction failure occurs.
[0004]
[Problems to be solved by the invention]
In this joining operation, one small crimp terminal (in many cases, a female member) is usually fixed and held while the other member is moved and joined. In order to make it fit, it is necessary to fix and hold firmly. In general, it seems to be sufficient to hold and hold the barrel part etc., but because the member itself is small, the processed part and the welded part are very close, and the terminal member itself such as the barrel part is directly fixed and held. It was impossible to do.
[0005]
In addition, if the barrel part is strongly clamped for any purpose, the part may be deformed and become a defective product. Careful attention should be paid to clamping the barrel part. Should have been avoided.
[0006]
For this reason, there is no terminal member itself, and attempts have been made to retain the covered portion of the covered electric wire connected thereto, but as described above, assuming use in harsh environments such as high temperatures and high pressures. Therefore, the coating is generally hard and slips even if it is strongly clamped, and fixing and holding using this portion is extremely difficult. In addition, if it is strongly clamped, a mark remains on the coating, and there is a serious problem that post-processing on the coated electric wire such as waterproofing with a rubber seal cannot be performed.
[0007]
In addition, since a strong gripping force is required to fix and hold the terminal member, the burden on the operator is large, and auxiliary equipment such as an opening / closing device is also required.
[0008]
On the other hand, it was considered that the position of the terminal member was fixed using a slight core wire exposed portion formed between the rear edge of the barrel portion and the coated tip of the covered electric wire, but the core wire is the most delicate in the crimp terminal. Since it is a member and the most important member, and there is a fear of damage due to the damage, it is almost taboo to use this part for fixing and holding a small crimp terminal member.
[0009]
As a result of earnest research that should solve the above-mentioned problems related to the connection work between the female member and the male member of the small crimp terminal, the present inventor has devised a method for fixing and holding the member, so that the connection work can be performed more reliably and accurately The present inventors have succeeded in developing a new method for connecting a small crimp terminal that can be applied to an automated apparatus, and propose the present invention as the present invention.
[0010]
[Means for Solving the Problems]
A flat and shaped insertion part is integrally formed at the front, and a barrel part for crimping and fixing the core wire of the coated electric wire is integrally formed at the rear. Bell barrel processing is applied to the front and rear edges of the barrel part. The small crimp terminal female member is inserted into the inserted portion of the small crimp terminal female member that is inserted into the insertion portion of the small crimp terminal male member in which the tongue-like insertion portion is integrally extended from the main body base. When a small crimping terminal male member is coupled, a slight core wire exposed portion is formed between the end surface of the covered wire and the barrel edge of the small crimp female member, and is placed behind the core wire exposed portion. While positioning the plate, the tip of the thin claws made of elastic thin plate from the upper rear is brought into contact with the upper part of the rear edge of the barrel, thereby preventing the female member from sliding backward and on the same axis. The member that inserts the insertion part of the male member positioned at Is moved to the inserted part way, it is to St. solve the above problems by the way allowed to fit thereto.
[0011]
Embodiment
FIG. 1 is a plan view of a small crimp terminal connected by the small crimp terminal connection method according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an enlarged perspective view of an essential part thereof.
[0012]
In the figure, 1 is a female member of a small crimp terminal, 2 is a male member, and both the female member 1 and the male member 2 are formed by pressing a metal plate having excellent conductivity. A cylindrical barrel part 4 is arranged in series behind a flat hollow or inserted part 3 with a guide part 5 opened upward and cut out in a U shape when viewed from the side. In the barrel portion 4, the core wire 7 at the tip of the covered electric wire 6 is inserted from the rear edge 25 side (right side in FIG. 1), and is fixed by caulking.
[0013]
A round mouth bell mouth 23 is formed on each of the rear edge 25 and the front edge 24 of the barrel portion 4. When the core wire 7 is crimped, the corners of the front edge 24 and the rear edge 25 of the barrel portion 4 are formed. This prevents the portion from directly contacting the surface of the core wire 7 and disconnecting. Further, a core wire exposed portion 9 of about 0.5 mm to 1 mm is formed between the rear edge 25 of the barrel portion 4 and the front end surface of the covering 8 of the covered electric wire 6.
[0014]
On the other hand, the male member 2 is formed by integrally extending a tongue-like insertion portion 10 from the main body base portion 11, and the tongue-like insertion portion 10 is firmly and firmly attached to the insertion portion 3 of the female member 2. It is formed in a dimension that can be securely inserted.
[0015]
In this embodiment, the main body base 11 is folded in a substantially U shape. This is because the main body base 11 has a function as an electrode plate having a spring property. Of course, 11 may take various forms according to various uses. The female member 1 and the male member 2 of these small crimp terminals are conventionally used and are known per se.
[0016]
Next, description will be given of a method of connecting the small crimp terminal female member 1 and the male member 2 according to the present invention. As shown in FIGS. 4, 5, and 6, the back side of the member 1 for fixing the covered electric wire 6 by caulking. The abutting plate 22 is brought into contact with the male member 2, and the male member 2 is coaxially disposed on the front side thereof so that the inserting portion 10 faces the member 1 side. 4, 5, and 6, the female member 1 is depicted as being placed on the backing plate 22, but the joining operation is performed with the female member 1 and the backing plate 33 standing. Of course you can go.
[0017]
In this state, as shown in FIG. 5 and FIG. 6, the thin claws 15 made of a thin plate having spring properties are disposed from the upper rear side of the barrel portion 4 of the female member 1, and the front end surface thereof is the rear edge 25 of the barrel portion 4. It is made to contact | abut on upper part, and the movement of the front-back direction of this clamping nail | claw 15 is stopped with this state. As shown in FIG. 7, the front end face 27 of the clamping claw 15 has a substantially Σ shape with a center 28 cut out in an arc shape. Care is taken not to cut.
[0018]
FIG. 8 is a partially enlarged view illustrating a state in which the sandwiching claws 15 are in contact with the rear edge 25 of the barrel portion 4, and the side surfaces of the sandwiching claws 15 are formed at the corners of the coated front end face 26 of the coated wire 6. Since the front end surface 27 of the clamping claw 15 is in contact with the rear edge 25 of the barrel portion 4 with this portion as a fulcrum, the clamping claw 15 hardly comes into direct contact with the core wire 7.
[0019]
The contact of the clamping claw 15 with the rear edge 25 of the barrel portion 4 is performed using a slight gap and a slight step, and precision is required for the work. Since it is made of an elastic thin plate, as shown in FIG. 5, the holding claw 15 is bent into an arcuate shape and the front end surface 27 is brought into contact with the upper surface of the covered electric wire 6 along the rear edge 25 side of the barrel portion 4 along this. If it slides, it will contact | abut to the upper part of the rear edge 25 of the barrel part 4 naturally, and the difficulty will not accompany it in the operation | work.
[0020]
In such a state, if the male member 2 is slid in the direction of the female member 1 and the tongue-like insertion portion 10 is fitted into the insertion portion 3 having a flat shape or a shape, as shown in FIG. 9 and FIG. The connection between the male member 2 and the female member 1 is completed.
[0021]
In addition, although strong pressing force is required for fitting the female member into the inserted portion 3 of the female member 2 in the insertion portion 10, the female member 1 is securely held in position by the clamping claws 15. There will be no retreat without being able to resist, and there will be no poor coupling.
[0022]
In this embodiment, the fixing of the barrel portion 4 by the clamping claws 15 and the sliding of the male member 2 in the direction of the female member 1 are performed separately manually, but they are interlocked using an electric mechanism, a hydraulic mechanism, or the like. Of course, it may be done.
[0023]
【effect】
The connection method of the crimp terminal according to the present invention has the configuration as described above, and the clamping claw 15 uses the slight core wire exposed portion 9 formed between the crimp terminal female member and the tip of the covered electric wire 6. Since clamping is performed, the clamping is more reliable than when the barrel 4 or the covering 8 of the covered electric wire 6 is sandwiched, and there is no risk of damaging the core wire or deforming the barrel 4 or the covering 8. The coupling work can be carried out with a clamping force, and the burden on the operator is small. The work can be contributed to improving the efficiency of the coupling work, and is extremely practical.
[Brief description of the drawings]
FIG. 1 is a plan view of a female member and a male member of a small crimp terminal used in the method for connecting small crimp terminals according to the present invention.
FIG. 2 is a side view of the same.
FIG. 3 is an enlarged perspective view of the main part of the same.
FIG. 4 is a plan view showing a positional relationship between a female member, a male member, and each part of a clamping claw when the small crimp terminal connecting method according to the present invention is carried out.
FIG. 5 is a side view of the same.
FIG. 6 is an enlarged perspective view of the main part of the same.
FIG. 7 is a perspective view of a clamping claw used in the method for connecting small crimp terminals according to the present invention.
FIG. 8 is an enlarged perspective view of the main part showing the mutual positional relationship between the barrel portion of the female member, the covered electric wire, and the clamping claws when the small crimp terminal connecting method according to the present invention is carried out.
FIG. 9 is a plan view of a small crimp terminal connected using the small crimp terminal connection method according to the present invention.
FIG. 10 is a side view of the same.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Female member 2 Male member 3 Inserted part 4 Barrel part 5 Guide part 6 Covered electric wire 7 Core wire 8 Covering 9 Core wire exposed part 10 Insertion part 11 Main body base 15 Claw claw 22 Stopper plate 24 Leading edge 25 Rear edge 26 Covering front end face 27 Front end face

Claims

前方に扁平さや状の被挿入部が、後方に被覆電線の芯線をカシメて固定するバレル部がそれぞれ一体的に形成されており、前記バレル部の前縁及び後縁にはベルマウス加工が施されている小型圧着端子めす部材の前記被挿入部に、本体基部から舌片状の挿入部が一体的に延設された小型圧着端子おす部材の前記挿入部を嵌入し、小型圧着端子めす部材と小型圧着端子おす部材とを結合する際に、被覆電線の被覆部端面と小型圧着めす部材のバレル部後縁との間に若干の芯線露出部を形成し、この芯線露出部の背後に当て板を位置させると共に、斜め後上方から弾性を有する薄板製の挟持爪の先端面をバレル部後縁上部に当接させ、これによってめす部材の後方へのスライドを阻止しつつ、同一軸芯上に位置させたおす部材の挿入部をめす部材の被挿入部方向へ移動させ、これに嵌入せしめる様にしたことを特徴とする小型圧着端子の接続方法。A flat and shaped insertion part is integrally formed at the front, and a barrel part for caulking and fixing the core wire of the covered electric wire is integrally formed at the rear. Bell barrel processing is applied to the front and rear edges of the barrel part. The small crimp terminal female member is inserted into the inserted portion of the small crimp terminal female member that is inserted into the insertion portion of the small crimp terminal male member in which the tongue-like insertion portion is integrally extended from the main body base. When a small crimp terminal male member is joined, a slight core wire exposed portion is formed between the end surface of the covered wire and the barrel edge of the small crimp female member, and is placed behind this core wire exposed portion. While positioning the plate, the tip of the thin claws made of elastic thin plate from the upper rear is brought into contact with the upper part of the rear edge of the barrel, thereby preventing the female member from sliding backward and on the same axis. The member that inserts the insertion part of the male member positioned at Is moved to the inserted part way, connection of the small crimp terminal, characterized in that the manner allowed to fit thereto.

前端が円弧状に切欠かれて略Σ状を呈している挟持爪を用いることを特徴とする請求項１記載の小型圧着端子の接続方法。2. The method of connecting a small crimp terminal according to claim 1, wherein a clamping claw having a front end cut out in an arc shape and having a substantially [Sigma] shape is used.