JP5019622B2 - Connecting terminal - Google Patents

Connecting terminal Download PDF

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JP5019622B2
JP5019622B2 JP2008087586A JP2008087586A JP5019622B2 JP 5019622 B2 JP5019622 B2 JP 5019622B2 JP 2008087586 A JP2008087586 A JP 2008087586A JP 2008087586 A JP2008087586 A JP 2008087586A JP 5019622 B2 JP5019622 B2 JP 5019622B2
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terminal
tuning fork
bus bar
protector
gap
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JP2009245606A (en
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洋司 田尻
年寛 吉田
康晴 駿河
祐樹 佐藤
寛一郎 山本
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THE FURUKAW ELECTRIC CO., LTD.
Furukawa Automotive Systems Inc
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THE FURUKAW ELECTRIC CO., LTD.
Furukawa Automotive Systems Inc
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本発明は、自動車用の電気接続箱に用いられるバスバー等の接続端子に関する。   The present invention relates to a connection terminal such as a bus bar used in an electric junction box for automobiles.

例えば自動車用の電気接続箱に用いられるバスバーは、特許文献1に開示のように、基板部の一端に、バッテリに接続される電線を圧着するバレルからなる電線圧着部を備える一方、基板部の他端に、複数の音叉状端子を所定間隔をおいて並列に突設したものとなっている。特にここでは、電線圧着部に電線を圧着して電気接続箱に収容するまでのワイヤハーネス製造工程において、音叉状端子が外力によって変形することを防止するために、音叉状端子を挟む左右両側に、音叉状端子の突出量以上となる端子変形防止板を突設する構成を採用している。また、当該端子変形防止板の端部間を架橋部によって連結することで、音叉状端子を側方及び上方から保護する例も提示している(同文献図5)。   For example, as disclosed in Patent Document 1, a bus bar used for an electric junction box for an automobile includes an electric wire crimping portion including a barrel for crimping an electric wire connected to a battery at one end of the substrate portion. At the other end, a plurality of tuning fork terminals are projected in parallel at a predetermined interval. In particular, here, in order to prevent the tuning fork terminal from being deformed by an external force in the wire harness manufacturing process from crimping the electric wire to the electric wire crimping portion and accommodating it in the electrical junction box, In addition, a configuration is adopted in which a terminal deformation prevention plate that protrudes beyond the amount of protrusion of the tuning fork terminal is provided. Moreover, the example which protects a tuning fork-shaped terminal from a side and upper direction by connecting between the edge parts of the said terminal deformation | transformation prevention board by a bridge | bridging part is also shown (FIG. 5 of the same literature).

特開2005−19259号公報JP 2005-19259 A

しかし、特許文献1のように架橋部を設けると、架橋部と音叉状端子の先端との間に隙間が生じ、架橋部を切断するまでの搬送や保管の間に他のバスバーが架橋部と音叉状端子との隙間に入り込み、当該音叉状端子を変形させるおそれがある。特に、バスバーは、プレス機による打ち抜き加工で製造される際には、プレス機から連続して排出される多数のバスバーを製品受納ボックス等で積み重ね状態で受け取ってそのまま搬送することが多いため、受け取りや搬送の際に音叉状端子が変形してしまうおそれは高く、音叉状端子の確実な変形防止には至っていない。   However, when the bridging portion is provided as in Patent Document 1, a gap is generated between the bridging portion and the tip of the tuning fork terminal, and another bus bar is connected to the bridging portion during transportation and storage until the bridging portion is cut. There is a risk of entering the gap between the tuning fork terminal and deforming the tuning fork terminal. In particular, when the bus bar is manufactured by punching with a press machine, many bus bars continuously discharged from the press machine are often received in a stacked state in a product receiving box etc. There is a high possibility that the tuning fork terminal will be deformed during receiving and transporting, and it has not been possible to reliably prevent the tuning fork terminal from being deformed.

そこで、本発明は、音叉状端子のような分岐端子の変形をより確実に防止することができる接続端子を提供することを目的としたものである。   Therefore, an object of the present invention is to provide a connection terminal that can more reliably prevent the deformation of a branch terminal such as a tuning fork terminal.

上記目的を達成するために、請求項1に記載の発明は、分岐端子の突出方向前方を非接触で横切る第1保護部と、その第1保護部の両端を分岐端子を除く導電性金属板の両端に夫々接続する一対の第2保護部と、を備えて分岐端子の外側を同一平面上で囲み、分岐端子の使用時には切断除去されるプロテクタを連設するとともに、第1保護部と分岐端子の先端との隙間Lと、導電性金属板の厚みTとが、L<Tの関係を満たすようにプロテクタを設けたことを特徴とするものである。
請求項2に記載の発明は、請求項1の構成において、隙間Lと厚みTとが、0.8T≦L<Tの関係を満たすようにプロテクタを設けたことを特徴とするものである。
In order to achieve the above-mentioned object, the invention according to claim 1 is a conductive metal plate in which the first protective portion that crosses the front of the branch terminal in the protruding direction in a non-contact manner and the both ends of the first protective portion excluding the branch terminal. And a pair of second protection parts respectively connected to both ends of the first and second protection parts that surround the outer side of the branch terminal on the same plane, and are connected to a protector that is cut and removed when the branch terminal is used. A protector is provided so that the gap L between the tip of the terminal and the thickness T of the conductive metal plate satisfy the relationship L <T.
The invention described in claim 2 is characterized in that, in the configuration of claim 1, a protector is provided so that the gap L and the thickness T satisfy a relationship of 0.8T ≦ L <T.

請求項1に記載の発明によれば、保管や搬送の際等に分岐端子とプロテクタとの間に他の接続端子等が入り込むおそれがなく、分岐端子の変形が確実に防止可能となる。
請求項2に記載の発明によれば、請求項1の効果に加えて、ある程度の隙間Lを確保することができるため、接続端子の加工性に影響を与えることがない。
According to the first aspect of the present invention, there is no possibility that another connection terminal or the like enters between the branch terminal and the protector during storage or transportation, and the deformation of the branch terminal can be reliably prevented.
According to the second aspect of the invention, in addition to the effect of the first aspect, a certain amount of gap L can be secured, so that the workability of the connection terminal is not affected.

以下、本発明の実施の形態を図面に基づいて説明する。
図1は、接続端子の一例であるバスバーの斜視図、図2はバスバーの説明図で、右が正面、左が側面、下が底面となっている。このバスバー1は、導電性金属板をプレス加工してなり、背景技術で説明したものと同様に、自動車用の電気接続箱へ電源分配用に設けられる。2は、バスバー1の下端で長手方向の中央に突設される圧着部で、バッテリに接続される図示しない電線が圧着される。一方、バスバー1の上端には、先端中央から切込み4を夫々形成した分岐端子としての音叉状端子3,3・・が、所定間隔をおいて複数個(ここでは11個)並列に突設されている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a bus bar which is an example of a connection terminal, and FIG. 2 is an explanatory diagram of the bus bar. The right side is a front surface, the left side is a side surface, and the bottom is a bottom surface. This bus bar 1 is formed by pressing a conductive metal plate, and is provided for power distribution to an electric junction box for automobiles, as described in the background art. Reference numeral 2 denotes a crimping portion projecting from the lower end of the bus bar 1 at the center in the longitudinal direction, and an electric wire (not shown) connected to the battery is crimped. On the other hand, at the upper end of the bus bar 1, a plurality of (for example, 11) tuning fork-like terminals 3, 11,. ing.

また、バスバー1の上端において、音叉状端子3,3・・の左右両側には、帯状のスタビライザ5,5が、音叉状端子3と平行に形成されると共に、スタビライザ5の上方部分には、四角形状の透孔6が形成されている。このスタビライザ5は、上端が音叉状端子3の上端よりも低くなるように形成され、バスバー1を電気接続箱に収容する際に、電気接続箱のハウジングに形成された収容溝に差し込まれて位置決めされるもので、このとき透孔6には、収容溝に設けられた矢尻状の係止片(ランス)が係止してバスバー1を抜け止めするようになっている。   Further, at the upper end of the bus bar 1, strip-shaped stabilizers 5, 5 are formed in parallel with the tuning fork terminal 3 on the left and right sides of the tuning fork terminals 3, 3. A square-shaped through hole 6 is formed. The stabilizer 5 is formed such that the upper end is lower than the upper end of the tuning fork terminal 3, and when the bus bar 1 is accommodated in the electrical junction box, the stabilizer 5 is inserted into the accommodation groove formed in the housing of the electrical junction box. At this time, in the through hole 6, an arrowhead-like locking piece (lance) provided in the accommodation groove is locked to prevent the bus bar 1 from coming off.

さらに、バスバー1において音叉状端子3の下方には、補強リブ7が形成されている。この補強リブ7は、プレス機の金型による半押しでバスバー1の一方の面側へ突出形成されるもので、左右のスタビライザ5,5を除く音叉状端子3,3・・の形成領域に亘って長手方向に形成される横リブ8と、その横リブ8の中央から圧着部2の根元部分まで下向きに形成される縦リブ9とからなるT字状となっている。   Further, a reinforcing rib 7 is formed below the tuning fork terminal 3 in the bus bar 1. The reinforcing rib 7 is formed so as to protrude to one surface side of the bus bar 1 by half-pressing with a die of a press machine. In the formation area of the tuning fork terminals 3, 3... Except for the left and right stabilizers 5, 5. It has a T-shape including a horizontal rib 8 formed in the longitudinal direction and a vertical rib 9 formed downward from the center of the horizontal rib 8 to the root portion of the crimping portion 2.

そして、バスバー1の上端側には、プロテクタ10が設けられている。このプロテクタ10は、音叉状端子3の上方を非接触で左右方向に横切る第1保護部11と、その第1保護部11の両端から下方に連設されて左右のスタビライザ5に夫々接続される一対の第2保護部12,12とからなり、図3に示すように、第1保護部11と音叉状端子3の上端との隙間Lがバスバー1の厚みTよりも狭く、すなわちL<Tの関係をみたすように設けられている。
また、第2保護部12は、透孔6と略同じ幅でスタビライザ5と接続され、スタビライザ5の上端との間には、横断面がV字状のノッチ(溝)14が夫々刻設されて、ノッチ14,14の位置でプロテクタ10を折り取れるようになっている。さらに、ノッチ14の両側でスタビライザ5の上端には、先端が半円状となる突部15,15が、ノッチ14よりも上方へ突出するように形成されている。加えて、各音叉状端子3の上端部は、一対の面取部16,16によって上端へ行くほど幅が狭くなるテーパ状に形成されている。
A protector 10 is provided on the upper end side of the bus bar 1. The protector 10 is connected to the left and right stabilizers 5 connected to the first protective part 11 that crosses the upper side of the tuning fork-shaped terminal 3 in the left-right direction without contact, and the both ends of the first protective part 11. As shown in FIG. 3, the gap L between the first protection part 11 and the upper end of the tuning fork terminal 3 is narrower than the thickness T of the bus bar 1, that is, L <T. It is provided to satisfy the relationship.
The second protection portion 12 is connected to the stabilizer 5 with substantially the same width as the through hole 6, and a notch (groove) 14 having a V-shaped cross section is formed between the upper end of the stabilizer 5. Thus, the protector 10 can be folded at the positions of the notches 14 and 14. Further, on the upper end of the stabilizer 5 on both sides of the notch 14, projections 15, 15 having a semicircular tip are formed so as to protrude upward from the notch 14. In addition, the upper end portion of each tuning fork-shaped terminal 3 is formed in a tapered shape whose width becomes narrower toward the upper end by the pair of chamfered portions 16 and 16.

以上の如く構成されたバスバー1においては、周知のプレス機によってプロテクタ10が連設された状態で製造される。従って、音叉状端子3はプロテクタ10によって上方及び左右両側が保護された格好となる。特に、第1保護部11と音叉状端子3の上端との隙間Lがバスバー1の厚みTよりも狭くなるように成形しているため、音叉状端子3,3・・と第1保護部11との間には、他のバスバーが入り込むことはない。したがって、プレス機から排出された際にそのまま積み重ねるように製品受け箱等に収納されても、音叉状端子3が他のバスバーと干渉するおそれは非常に少なくなる。   The bus bar 1 configured as described above is manufactured in a state where the protector 10 is continuously provided by a known press machine. Therefore, the tuning fork-like terminal 3 looks like the protector 10 protects the upper and left and right sides. In particular, since the gap L between the first protection part 11 and the upper end of the tuning fork terminal 3 is formed to be narrower than the thickness T of the bus bar 1, the tuning fork terminals 3, 3,. There is no other bus bar in between. Therefore, even if the tuning fork terminal 3 is stored in a product receiving box or the like so as to be stacked as it is discharged from the press, the possibility that the tuning fork terminal 3 interferes with other bus bars is very small.

そして、電気接続箱に組み込む際には、左右のノッチ14,14の部分で第2保護部12,12をスタビライザ5,5から折り取るようにしてプロテクタ10を取り除くと、図4に示すように音叉状端子3,3・・が露出して使用可能となる。
このとき、ノッチ14,14によってプロテクタ10の切断除去が簡単に行えると共に、切断除去した後のスタビライザ5の上端は、図5のように、上端へ向かって先細りとなるテーパ状となるため、電気接続箱に差し込む際に係止片17が乗り上がりやすく、挿入性が向上する。また、突部15,15がノッチ14から上方へ突出する格好となるため、突部15,15によって係止片17が確実にスタビライザ5に案内される。
When the protector 10 is removed by folding the second protective portions 12 and 12 from the stabilizers 5 and 5 at the left and right notches 14 and 14 when incorporated in the electrical junction box, as shown in FIG. The tuning fork terminals 3, 3,... Are exposed and can be used.
At this time, the protector 10 can be easily cut and removed by the notches 14 and 14, and the upper end of the stabilizer 5 after being cut and removed becomes a tapered shape that tapers toward the upper end as shown in FIG. When inserting into the connection box, the locking piece 17 is easy to get on, and the insertability is improved. Further, since the protrusions 15 and 15 protrude upward from the notch 14, the locking pieces 17 are reliably guided to the stabilizer 5 by the protrusions 15 and 15.

一方、バスバー1には、横リブ8が設けられているので、音叉状端子3,3・・が多数並設されて左右方向に長くなっても強度が確保でき、変形のおそれが少なくなる。特に、横リブ8は、スタビライザ5,5に達しない長さで形成されているため、スタビライザ5,5による位置決め機能に影響を与えることなく強度アップが達成可能となっている。加えて、ここでは縦リブ9も設けられているので、圧着部2の根元部分での強度も高くなり、全体に変形に強いバスバー1が得られる。   On the other hand, the bus bar 1 is provided with the horizontal ribs 8. Therefore, even if a large number of tuning fork terminals 3, 3,... In particular, since the lateral rib 8 is formed with a length that does not reach the stabilizers 5, 5, the strength can be increased without affecting the positioning function of the stabilizers 5, 5. In addition, since the vertical ribs 9 are also provided here, the strength at the base portion of the crimping portion 2 is increased, and the bus bar 1 that is resistant to deformation as a whole is obtained.

このように、上記形態のバスバー1によれば、音叉状端子3の突出方向前方を非接触で横切る第1保護部11と、その第1保護部11の両端を音叉状端子3を除く導電性金属板の両端に夫々接続する一対の第2保護部12,12と、を備えて音叉状端子3の外側を同一平面上で囲み、音叉状端子3の使用時には切断除去されるプロテクタ10を連設するとともに、当該プロテクタ10の第1保護部11と音叉状端子3の先端との隙間Lをバスバー1の厚みTよりも狭く成形したことで、保管や搬送の際等に音叉状端子3とプロテクタ10との間に他のバスバー等が入り込むおそれがなく、音叉状端子3の変形が確実に防止可能となる。   Thus, according to the bus bar 1 of the above-described form, the first protection part 11 that crosses the front of the tuning fork terminal 3 in the protruding direction in a non-contact manner and the conductivity of the first protection part 11 excluding the tuning fork terminal 3 at both ends. A pair of second protection portions 12 and 12 respectively connected to both ends of the metal plate are provided so as to surround the outer side of the tuning fork terminal 3 on the same plane, and to connect the protector 10 which is cut and removed when the tuning fork terminal 3 is used. In addition, the gap L between the first protection part 11 of the protector 10 and the tip of the tuning fork terminal 3 is formed to be narrower than the thickness T of the bus bar 1, so that the tuning fork terminal 3 and the There is no possibility that another bus bar or the like may enter between the protector 10 and the deformation of the tuning fork terminal 3 can be surely prevented.

なお、上記形態では、プロテクタの第1保護部と音叉状端子の先端との隙間Lとバスバーの厚みTとがL<Tの関係をみたすことのみを要件としているが、隙間Lをあまりにも狭くすると打ち抜き加工が困難となり、接続端子の加工性に影響がでる。そこで、隙間Lを厚みTの0.8倍以上とする、すなわち隙間Lと厚みTとが0.8T≦L<Tの関係をみたすようにプロテクタを設けた方が加工性に影響を及ぼすことがなく、より好ましい。
また、分岐端子は上記形態に限らず、数の増減は勿論、先端に面取部を設けない形状であってもよい。
その他、上記形態では、下端に圧着部を備えて電線が圧着されるバスバーで説明しているが、下端に基板への接続端子部を突設したヒューズ用のバスバー等、他の接続端子であっても本発明は適用可能である。
In the above embodiment, the only requirement is that the gap L between the first protection portion of the protector and the tip of the tuning fork terminal and the thickness T of the bus bar satisfy the relationship L <T, but the gap L is too narrow. Then, punching becomes difficult, and the workability of the connection terminal is affected. Therefore, if the gap L is set to 0.8 times or more of the thickness T, that is, if the protector is provided so that the gap L and the thickness T satisfy the relationship of 0.8T ≦ L <T, the workability may be affected. It is more preferable.
Further, the branch terminal is not limited to the above-described form, and may be of a shape in which the chamfered portion is not provided at the tip as well as the number of the branch terminals.
In addition, in the above-described embodiment, the description has been given of the bus bar having a crimping portion at the lower end and the electric wire being crimped, but other connection terminals such as a bus bar for a fuse projecting a connection terminal portion to the substrate at the lower end. However, the present invention is applicable.

バスバーの斜視図である。It is a perspective view of a bus bar. バスバーの説明図で、右が正面、左が側面、下が底面を夫々示す。It is explanatory drawing of a bus bar, the right shows the front, the left shows the side, and the bottom shows the bottom. バスバーの部分拡大図である。It is the elements on larger scale of a bus bar. プロテクタを切断除去したバスバーの斜視図である。It is a perspective view of the bus bar which cut and removed the protector. スタビライザへの係止片の係止状態を示す説明図である。It is explanatory drawing which shows the latching state of the latching piece to a stabilizer.

符号の説明Explanation of symbols

1・・バスバー、2・・圧着部、3・・音叉状端子、5・・スタビライザ、6・・透孔、7・・補強リブ、8・・横リブ、9・・縦リブ、10・・プロテクタ、11・・第1保護部、12・・第2保護部、14・・ノッチ、15・・突部、16・・面取部、L・・隙間、T・・厚み。   1 .... Bus bar, 2 .... Crimp part, 3 .... Tuning fork terminal, 5 .... Stabilizer, 6 .... Through hole, 7 .... Reinforcement rib, 8 .... Horizontal rib, 9 .... Vertical rib, 10 .... Protector, 11... First protection part, 12... Second protection part, 14... Notch, 15 .. Projection part, 16 ... Chamfering part, L ... Gap, T ... Thickness.

Claims (2)

導電性金属板で形成され、所定形状で突出する分岐端子を所定間隔をおいて複数個並設してなる接続端子であって、
前記分岐端子の突出方向前方を非接触で横切る第1保護部と、その第1保護部の両端を前記分岐端子を除く前記導電性金属板の両端に夫々接続する一対の第2保護部と、を備えて前記分岐端子の外側を同一平面上で囲み、前記分岐端子の使用時には切断除去されるプロテクタを連設するとともに、
前記第1保護部と前記分岐端子の先端との隙間Lと、前記導電性金属板の厚みTとが、
L<T
の関係を満たすように前記プロテクタを設けたことを特徴とする接続端子。
A connection terminal formed of a conductive metal plate and juxtaposed with a plurality of branch terminals protruding in a predetermined shape at predetermined intervals,
A first protection portion that crosses the front of the branch terminal in a non-contact manner, and a pair of second protection portions that connect both ends of the first protection portion to both ends of the conductive metal plate excluding the branch terminal; And surrounding the outside of the branch terminal on the same plane, connecting a protector that is cut and removed when the branch terminal is used,
A gap L between the first protection part and the tip of the branch terminal, and a thickness T of the conductive metal plate,
L <T
A connection terminal comprising the protector so as to satisfy the relationship.
前記隙間Lと前記厚みTとが、
0.8T≦L<T
の関係を満たすように前記プロテクタを設けたことを特徴とする請求項1に記載の接続端子。
The gap L and the thickness T are
0.8T ≦ L <T
The connection terminal according to claim 1, wherein the protector is provided so as to satisfy the relationship.
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