JP6564482B2 - Metal plate resistor - Google Patents

Metal plate resistor Download PDF

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JP6564482B2
JP6564482B2 JP2018040506A JP2018040506A JP6564482B2 JP 6564482 B2 JP6564482 B2 JP 6564482B2 JP 2018040506 A JP2018040506 A JP 2018040506A JP 2018040506 A JP2018040506 A JP 2018040506A JP 6564482 B2 JP6564482 B2 JP 6564482B2
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resistor
electrode
voltage detection
metal plate
terminal
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仲村　圭史
圭史 仲村
健司 亀子
健司 亀子
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Koa Corp
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Description

本発明は、金属材からなる抵抗体の両端に金属材からなる電極を接合した金属板抵抗器に関する。   The present invention relates to a metal plate resistor in which electrodes made of a metal material are joined to both ends of a resistor made of a metal material.

金属板抵抗器は大電流の高精度の検出が可能で、バッテリーの充放電電流の検出等の用途に広く用いられている。金属板抵抗器をワイヤーハーネスやバスバー等に接続して固定する場合に、ボルト締めにより固定することが行われている。しかし、ボルト締めにより固定する場合、取付部に段差があると、この段差に追従する形に抵抗器が変形し、特性が変動し信頼性の劣化が懸念される。そこで、ボルト締めによる変形が可能な電極変形部を備えた金属板抵抗器が提案されている（特許文献１参照）。   Metal plate resistors can detect large currents with high accuracy, and are widely used for applications such as battery charge / discharge current detection. When a metal plate resistor is connected and fixed to a wire harness, a bus bar or the like, it is fixed by bolting. However, when fixing by bolting, if there is a step in the mounting portion, the resistor is deformed to follow the step, the characteristics fluctuate, and there is a concern about deterioration of reliability. Therefore, a metal plate resistor including an electrode deformable portion that can be deformed by bolting has been proposed (see Patent Document 1).

さらに、バスバー等に金属板抵抗器をボルト締めにより固定する際に、締め付けトルクによる応力がボルトの回転方向に印加された場合、抵抗体と電極の接合部に引き剥がし方向の応力が加わり、抵抗体と電極の接合部の一部が剥がれて損傷する可能性がある。   Furthermore, when a metal plate resistor is fixed to a bus bar or the like by bolt tightening, if stress due to tightening torque is applied in the bolt rotation direction, stress in the peeling direction is applied to the joint between the resistor and the electrode, causing resistance. Part of the joint between the body and the electrode may peel off and be damaged.

特開２００９−２６６９７７号公報JP 2009-266977 A

本発明は、上述の事情に基づいてなされたもので、バスバー等に金属板抵抗器をボルト締めにより固定するに際して、抵抗体と電極の接合面に生じる剥がれを抑制できるように強度を高めた金属板抵抗器を提供することを目的とする。   The present invention has been made on the basis of the above-described circumstances, and is a metal whose strength is increased so as to suppress peeling occurring on the joint surface between the resistor and the electrode when the metal plate resistor is fixed to the bus bar or the like by bolting. An object is to provide a plate resistor.

本発明の金属板抵抗器は、金属材からなる抵抗体と、該抵抗体よりも高導電率の金属材からなる電極と、該電極に設けられ電圧を検出するための電圧検出端子を備え、前記電極を貫通した端子孔が形成され、前記電圧検出端子は前記端子孔に挿通され、前記端子孔に挿通された電圧検出端子の一方の端部を、前記抵抗体が接触して覆うことを特徴とする。 The metal plate resistor of the present invention comprises a resistor made of a metal material, an electrode made of a metal material having a higher conductivity than the resistor, and a voltage detection terminal provided on the electrode for detecting a voltage, A terminal hole penetrating the electrode is formed, the voltage detection terminal is inserted through the terminal hole, and one end of the voltage detection terminal inserted through the terminal hole is covered with the resistor. Features.

前記電極における前記抵抗体と接合する端部に凹部が形成され、該凹部には底面があり、該底面に前記端子孔が設けられたことが好ましい。前記電圧検出端子は、一方の終端が、前記底面に当接するフランジ状であることが好ましい。   It is preferable that a concave portion is formed at an end portion of the electrode joined to the resistor, the concave portion has a bottom surface, and the terminal hole is provided on the bottom surface. It is preferable that one end of the voltage detection terminal has a flange shape in contact with the bottom surface.

本発明の第１実施例の抵抗器の斜視図である。It is a perspective view of the resistor of 1st Example of this invention. 上記抵抗器の分解斜視図であり、電圧検出端子を装着する前の図である。It is a disassembled perspective view of the said resistor, and is a figure before mounting | wearing with a voltage detection terminal. 上記抵抗器の分解斜視図であり、電圧検出端子を装着した後の図である。It is a disassembled perspective view of the said resistor, and is a figure after mounting | wearing with the voltage detection terminal. 上記抵抗器をバスバーに固定する段階の分解斜視図である。It is a disassembled perspective view of the stage which fixes the said resistor to a bus bar. 上記抵抗器をバスバーに固定した段階の断面図である。It is sectional drawing of the step which fixed the said resistor to the bus-bar. 本発明の作用効果を示す説明図である。It is explanatory drawing which shows the effect of this invention. 凹部の寸法例の斜視図である。It is a perspective view of the example of a dimension of a crevice. 本発明の第２実施例の抵抗器の斜視図である。It is a perspective view of the resistor of 2nd Example of this invention. 上記抵抗器の分解斜視図である。It is a disassembled perspective view of the said resistor. 本発明の第３実施例の抵抗器の平面図である。It is a top view of the resistor of 3rd Example of this invention. 本発明の第４実施例の抵抗器の平面図である。It is a top view of the resistor of 4th Example of this invention. 本発明の第４実施例の変形例の抵抗器の平面図である。It is a top view of the resistor of the modification of 4th Example of this invention. 本発明の第４実施例の変形例の抵抗器の平面図である。It is a top view of the resistor of the modification of 4th Example of this invention.

以下、本発明の実施形態について、図１乃至図１３を参照して説明する。なお、各図中、同一または相当する部材または要素には、同一の符号を付して説明する。   Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 13. In addition, in each figure, the same code | symbol is attached | subjected and demonstrated to the same or equivalent member or element.

図１は本発明の第１実施例の金属板抵抗器を示す。この抵抗器１０は、Ｃｕ−Ｍｎ−Ｎｉ系等の金属材からなる平板状の抵抗体１１と、該抵抗体よりも高導電率のＣｕ等の金属材からなる一対の平板状の電極１２，１２で構成される。そして、抵抗体１１と電極１２はそれぞれの接合側端面が溶接または圧接により接合された電流検出用の金属板抵抗器である。   FIG. 1 shows a metal plate resistor according to a first embodiment of the present invention. The resistor 10 includes a plate-like resistor 11 made of a metal material such as Cu-Mn-Ni, and a pair of plate-like electrodes 12 made of a metal material such as Cu having a higher conductivity than the resistor. 12 is composed. The resistor 11 and the electrode 12 are metal plate resistors for current detection in which the joining side end surfaces are joined by welding or pressure welding.

この抵抗器１０は、電極１２における抵抗体１１との接合側端面部分に形成された凹部１３を備え（図２−３参照）、該凹部に抵抗体１１の端部が嵌め込まれて、接合されている。そして、電極１２に形成されたボルトを挿通可能な固定孔１４を備え、バスバー等にボルト締めにより固定することが可能となっている。   The resistor 10 includes a concave portion 13 formed in a joint side end surface portion of the electrode 12 with respect to the resistor 11 (see FIG. 2-3), and the end portion of the resistor 11 is fitted into the concave portion and joined. ing. And the fixing hole 14 which can insert the volt | bolt formed in the electrode 12 is provided, and it can fix to a bus-bar etc. by bolting.

なお、凹部１３は、電極１２の第１面（上面）と端面とに開口している。そして、凹部１３は、固定孔１４の貫通方向と略直角の方向であって、抵抗体１１の幅方向の両側部に壁部Ａを備える。従って、電極の凹部１３に抵抗体１１の端部を嵌め込むことで、接合が強固になり、後述するようにボルト締めの応力に対して強くなる。すなわち、ボルトの回転方向に対して、両側から抵抗体１１を支える壁部Ａがあるため、ボルト締めの際に、抵抗体と電極の接合面に印加される応力が低減し、接合面が剥がれにくくなる。   The recess 13 is open to the first surface (upper surface) and the end surface of the electrode 12. The recess 13 is provided with wall portions A on both sides in the width direction of the resistor 11 in a direction substantially perpendicular to the penetration direction of the fixing hole 14. Therefore, by fitting the end portion of the resistor 11 into the recess 13 of the electrode, the bonding becomes strong and strong against the bolting stress as will be described later. That is, since there is a wall portion A that supports the resistor 11 from both sides with respect to the rotation direction of the bolt, the stress applied to the joint surface between the resistor and the electrode is reduced when the bolt is tightened, and the joint surface is peeled off. It becomes difficult.

図２はこの抵抗器自体の分解斜視図である。凹部１３が電極１２における抵抗体１１との接合側端面部分に形成され、凹部１３は抵抗体１１の幅方向の両側部に壁部Ａを備え、長手方向の端面部に壁部を備え、両側部の壁部Ａと端面部の壁部に囲まれた底面部１３ｂを備える。抵抗体１１の端部が凹部１３に嵌め込まれ、溶接または圧接により底面部１３ｂおよび両側部の壁部Ａと端面部の壁部に接合される。   FIG. 2 is an exploded perspective view of the resistor itself. The concave portion 13 is formed in the end surface portion of the electrode 12 on the joint side with the resistor 11, and the concave portion 13 includes wall portions A on both side portions in the width direction of the resistor 11, and includes wall portions on the end surface portions in the longitudinal direction. A bottom surface portion 13b surrounded by a wall portion A and a wall portion of the end surface portion. The end portion of the resistor 11 is fitted into the recess 13 and joined to the bottom surface portion 13b and the wall portion A on both side portions and the wall portion of the end surface portion by welding or pressure welding.

ろう接は、Ｃｕろう、Ａｇろう等を凹部１３内に塗布し、抵抗体１１の端部を嵌着し、加熱して冷却することで、ろう材により抵抗体と電極の接着面を接合する。溶接は、レーザービーム溶接または電子ビーム溶接等を用い、抵抗体と電極の接着面を接合する。   In brazing, Cu brazing, Ag brazing, or the like is applied in the recess 13, the end of the resistor 11 is fitted, heated and cooled to join the bonding surface of the resistor and the electrode with the brazing material. . For welding, laser beam welding, electron beam welding, or the like is used to join the bonding surfaces of the resistor and the electrode.

凹部１３の底面部１３ｂには第１面（表面）と反対側の第２面（裏面）に貫通する端子孔１３ｃがあり、該端子孔に電圧測定が可能であって第２面（裏面）側に突出する端子１５を挿通可能としている。これにより、第２面（裏面）側への電圧検出端子１５の立設が容易になる。また、端子孔１３ｃの位置を変更することによって、電圧検出精度を向上させることができる。例えば、端子孔１３ｃの位置を電極１２の抵抗体側端面に接近させ、電圧検出端子１５を抵抗体側端面に接近させることで、電極の抵抗成分の影響を低減した電圧検出を行うことができる。   The bottom surface portion 13b of the recess 13 has a terminal hole 13c penetrating through the second surface (back surface) opposite to the first surface (front surface). Voltage measurement is possible in the terminal hole, and the second surface (back surface). A terminal 15 protruding to the side can be inserted. Thereby, the standing of the voltage detection terminal 15 to the 2nd surface (back surface) side becomes easy. Further, the voltage detection accuracy can be improved by changing the position of the terminal hole 13c. For example, by making the position of the terminal hole 13c approach the resistor-side end face of the electrode 12 and making the voltage detection terminal 15 approach the resistor-side end face, voltage detection with reduced influence of the resistance component of the electrode can be performed.

電圧検出端子１５は、一方の終端が、底面部１３ｂに当接するフランジ状であることが好ましい。これにより、電圧検出端子１５の位置決め、抜けの防止が可能となる。図３は端子孔１３ｃに電圧検出端子１５を装着した状態を示す。端子孔１３ｃは電圧検出端子１５のフランジ部に係合する凹部を備え、該凹部に電圧検出端子１５のフランジ部を挿着し、その表面が底面部１３ｂと略同一平面となるようにする（図５参照）。そして、電圧検出端子を嵌めて平坦となった底面部１３ｂを抵抗体１１の端部で被覆し、ろう接または溶接することで、電圧検出端子１５の抜けや引っ込みを防止できる。この状態で、電圧検出端子１５は第２面（裏面）側へ突出する。   It is preferable that one end of the voltage detection terminal 15 has a flange shape that comes into contact with the bottom surface portion 13b. As a result, the voltage detection terminal 15 can be positioned and prevented from coming off. FIG. 3 shows a state in which the voltage detection terminal 15 is mounted in the terminal hole 13c. The terminal hole 13c includes a recess that engages with the flange portion of the voltage detection terminal 15, and the flange portion of the voltage detection terminal 15 is inserted into the recess so that the surface thereof is substantially flush with the bottom surface portion 13b ( (See FIG. 5). Then, the bottom surface portion 13b that is flattened by fitting the voltage detection terminal is covered with the end portion of the resistor 11, and soldering or welding is performed, so that the voltage detection terminal 15 can be prevented from being pulled out or retracted. In this state, the voltage detection terminal 15 protrudes toward the second surface (back surface).

図４はこの抵抗器の組み付け段階の分解斜視図であり、図１の抵抗器の裏面側を表面側にした図である。電極１２の抵抗体側端面近傍には電圧検出端子１５が立設され、抵抗体１１に流れる被測定電流によって生じる電圧を外部に取り出して検出できるようになっている。電極１２の固定孔１４およびバスバー１６の固定孔１７にボルト１８が挿通して、ナット１９を締め付けることで、抵抗器の電極１２をバスバー１６に固定することができる。   FIG. 4 is an exploded perspective view of this resistor assembly stage, and is a view in which the back surface side of the resistor of FIG. 1 is the front surface side. A voltage detection terminal 15 is provided in the vicinity of the end face of the electrode 12 on the resistor side so that the voltage generated by the current to be measured flowing through the resistor 11 can be taken out and detected. The bolt 18 is inserted into the fixing hole 14 of the electrode 12 and the fixing hole 17 of the bus bar 16 and the nut 19 is tightened, whereby the electrode 12 of the resistor can be fixed to the bus bar 16.

図５は抵抗器の電極１２をバスバー１６に、ボルト１８をナット１９に締め付けることで組み付けた状態を示す。すなわち、抵抗体１１の両端部が電極１２の端面部分に形成された凹部１３に嵌め込まれ、ろう接または溶接により接合して固定されている。抵抗体１１は凹部１３の底面部１３ｂにも接合して固定されるので、図中の上下方向の応力に対して強い。一対の電極１２の抵抗体側の端面近傍には、電圧検出端子１５がそのフランジ部１５ａを抵抗体１１に接触させて電極の第２面側に突出している。   FIG. 5 shows a state in which the resistor electrode 12 is assembled to the bus bar 16 and the bolt 18 is tightened to the nut 19. That is, both end portions of the resistor 11 are fitted into the recesses 13 formed in the end face portion of the electrode 12, and are joined and fixed by brazing or welding. Since the resistor 11 is also bonded and fixed to the bottom surface portion 13b of the recess 13, it is strong against stress in the vertical direction in the figure. In the vicinity of the end face on the resistor side of the pair of electrodes 12, the voltage detection terminal 15 protrudes toward the second surface side of the electrode with the flange portion 15 a contacting the resistor 11.

図６は図４における組み付けの際の応力の分布を示す。ボルト１８を回転方向に締め付けると、図中の回転方向にＦθで示す応力が生じる。これにより、抵抗体１１と電極１２の接合面の近傍で、抵抗体１１の長手方向に対して垂直方向に応力Ｆαが生じる。これに対して、電極１２の凹部１３は抵抗体１１の幅方向の両側部に壁部Ａを備えるので、ボルト１８の回転方向の応力Ｆθに対して、両側から抵抗体１１の端部を支える壁部Ａがある。このため、ボルト締めの際の応力Ｆαは抵抗体１１と電極１２の接合面に作用しない。従って、ボルト締めに際して、抵抗体１１と電極１２の接合面が剥がれる恐れが無くなり、抵抗器の信頼性を高めることができる。   FIG. 6 shows a stress distribution during assembly in FIG. When the bolt 18 is tightened in the rotation direction, a stress indicated by Fθ is generated in the rotation direction in the figure. As a result, a stress Fα is generated in the direction perpendicular to the longitudinal direction of the resistor 11 in the vicinity of the joint surface between the resistor 11 and the electrode 12. On the other hand, since the concave portion 13 of the electrode 12 has wall portions A on both sides in the width direction of the resistor 11, the end portion of the resistor 11 is supported from both sides against the stress Fθ in the rotation direction of the bolt 18. There is wall A. For this reason, the stress Fα at the time of bolting does not act on the joint surface between the resistor 11 and the electrode 12. Therefore, there is no possibility that the joint surface between the resistor 11 and the electrode 12 is peeled off when the bolt is tightened, and the reliability of the resistor can be improved.

図７は好ましい凹部の寸法例を示す。凹部１３の長さＸは抵抗体１１の厚みの０．５から２倍程度が好ましい。壁部Ａの幅Ｙは抵抗体１１の厚みの０．５倍以上が好ましい。凹部１３の高さＺも抵抗体１１の厚みの０．５倍以上が好ましい。これらの寸法は、ボルト締めによって発生する応力Ｆαが電極１２と抵抗体１１の接合面に影響しないように、壁部Ａで補強するのに適するように設定する。   FIG. 7 shows an example of a preferred recess dimension. The length X of the recess 13 is preferably about 0.5 to 2 times the thickness of the resistor 11. The width Y of the wall portion A is preferably 0.5 times or more the thickness of the resistor 11. The height Z of the recess 13 is also preferably 0.5 times or more the thickness of the resistor 11. These dimensions are set so as to be suitable for reinforcement by the wall portion A so that the stress Fα generated by bolting does not affect the joint surface between the electrode 12 and the resistor 11.

図８および図９は本発明の第２実施例の金属板抵抗器１０ａを示す。この実施例においては、凹部２３は第１面と第２面の間を貫通していて底面を有さない。すなわち、抵抗体１１の厚みは電極１２の厚みと同じで、凹部２３は、固定孔１４の貫通方向と略直角の方向であって、抵抗体１１の幅方向の両側部に壁部Ａを備える。従って、抵抗体１１の両端部が凹部２３の一対の壁部Ａに支えられた構造となっていて、ボルト締めに対して第１実施例よりも強い構造となっている。また、凹部２３が第１面と第２面の間を貫通しているので、抵抗体１１の位置決めも容易である。抵抗体１１と電極１２の接合がろう接または溶接により形成される点も第１実施例と同様である。   8 and 9 show a metal plate resistor 10a according to a second embodiment of the present invention. In this embodiment, the recess 23 penetrates between the first surface and the second surface and does not have a bottom surface. That is, the thickness of the resistor 11 is the same as the thickness of the electrode 12, and the recess 23 has a wall portion A on both sides in the width direction of the resistor 11 in a direction substantially perpendicular to the penetration direction of the fixing hole 14. . Accordingly, both ends of the resistor 11 are supported by the pair of wall portions A of the recess 23, and the structure is stronger than the first embodiment against bolting. Moreover, since the recessed part 23 has penetrated between the 1st surface and the 2nd surface, positioning of the resistor 11 is also easy. The point that the joining of the resistor 11 and the electrode 12 is formed by brazing or welding is the same as in the first embodiment.

図１０は本発明の第３実施例の金属板抵抗器１０ｂを示す。この実施例では、凹部１３の底面１３ｂに電圧検出端子１５の挿入孔１３ｃを複数形成している。これにより、いずれかの孔１３ｃに電圧検出端子１５を挿入することで、電圧検出端子１５を立設することができる。電圧検出端子の配置によって、電流分布に対応した適切な位置に電圧検出端子の立設ができ、ＴＣＲ特性等を調整することが可能となる。開発段階で本実施例の構造を用いて特性の検査を行い、最適な位置を見出し、製品化段階では当該位置にのみ挿入孔を形成するようにしてもよい。   FIG. 10 shows a metal plate resistor 10b according to a third embodiment of the present invention. In this embodiment, a plurality of insertion holes 13 c for the voltage detection terminal 15 are formed in the bottom surface 13 b of the recess 13. Thereby, the voltage detection terminal 15 can be erected by inserting the voltage detection terminal 15 into one of the holes 13c. With the arrangement of the voltage detection terminals, the voltage detection terminals can be erected at an appropriate position corresponding to the current distribution, and the TCR characteristics and the like can be adjusted. It is also possible to inspect characteristics using the structure of the present embodiment at the development stage, find the optimum position, and form the insertion hole only at that position in the commercialization stage.

図１１−１３は本発明の第４実施例の金属板抵抗器を示す。これらの実施例では、凹部１３の底面１３ｂに電圧検出端子の挿入孔１３ｃを単数形成し、電圧検出端子１５を挿入し、その電極側に電流の流れを妨げる線状の貫通孔２５Ａ、２５Ｂ、２５Ｃを形成したものである。図１１では電流方向に直交する方向の貫通孔２５Ａを形成し、図１２では抵抗体側電極端面から斜めに切り込む貫通孔２５Ｂを形成し、図１３では抵抗体側電極端面から電流方向に切り込み、電流方向に直交する方向にカギの手状に切り込む貫通孔２５Ｃを形成している。貫通孔２５Ａ、２５Ｂ、２５Ｃを端子孔１３ｃの外側に形成することで、端子孔１３ｃ近傍で電流が流れないようにすることができ、電極の抵抗成分の影響を低減し、より正確な電流検出が可能となり、さらにＴＣＲ特性等を調整することが可能となる。   11-13 show a metal plate resistor according to a fourth embodiment of the present invention. In these embodiments, a single voltage detection terminal insertion hole 13c is formed in the bottom surface 13b of the recess 13, the voltage detection terminal 15 is inserted, and linear through holes 25A, 25B that prevent current flow on the electrode side. 25C is formed. In FIG. 11, a through-hole 25A in a direction orthogonal to the current direction is formed, in FIG. 12, a through-hole 25B cut obliquely from the resistor-side electrode end surface is formed, and in FIG. A through-hole 25C is formed in a key-like shape in a direction perpendicular to. By forming the through holes 25A, 25B, and 25C outside the terminal hole 13c, current can be prevented from flowing in the vicinity of the terminal hole 13c, the influence of the resistance component of the electrode is reduced, and more accurate current detection is achieved. It becomes possible to further adjust the TCR characteristics and the like.

これまで本発明の一実施形態について説明したが、本発明は上述の実施形態に限定されず、その技術的思想の範囲内において種々異なる形態にて実施されてよいことは言うまでもない。   Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

本発明は、ボルト締めでバスバー等に固定する金属板抵抗器に好適に利用可能である。   The present invention can be suitably used for a metal plate resistor fixed to a bus bar or the like by bolting.

Claims (5)

金属材からなる抵抗体と、該抵抗体よりも高導電率の金属材からなる電極と、該電極に設けられ電圧を検出するための電圧検出端子を備え、
前記電極を貫通した端子孔が形成され、
前記電圧検出端子は前記端子孔に挿通され、
前記端子孔に挿通された電圧検出端子の一方の端部を、前記抵抗体が接触して覆うことを特徴とする電流検出用金属板抵抗器。 A resistor made of a metal material, an electrode made of a metal material having a higher conductivity than the resistor, and a voltage detection terminal provided on the electrode for detecting a voltage;
A terminal hole penetrating the electrode is formed,
The voltage detection terminal is inserted through the terminal hole,
The current detecting metal plate resistor, wherein the resistor contacts and covers one end portion of the voltage detection terminal inserted through the terminal hole. 前記電極における前記抵抗体と接合する端部に凹部が形成され、
該凹部には底面部があり、
該底面部に前記端子孔が設けられたことを特徴とする請求項１に記載の電流検出用金属板抵抗器。 A recess is formed at the end of the electrode that joins the resistor,
The recess has a bottom surface,
The metal plate resistor for current detection according to claim 1, wherein the terminal hole is provided in the bottom surface portion. 前記電圧検出端子は、一方の終端が、前記底面部に当接するフランジ状であることを特徴とする請求項２に記載の電流検出用金属板抵抗器。 3. The metal plate resistor for current detection according to claim 2 , wherein one end of the voltage detection terminal has a flange shape in contact with the bottom surface portion. 金属材からなる抵抗体と、該抵抗体よりも高導電率の金属材からなる電極と、該電極に設けられ電圧を検出するための電圧検出端子を備え、A resistor made of a metal material, an electrode made of a metal material having a higher conductivity than the resistor, and a voltage detection terminal provided on the electrode for detecting a voltage;
前記電極における前記抵抗体と接合する端部に凹部が形成され、  A recess is formed at the end of the electrode that joins the resistor,
該凹部には底面部があり、該底面部に前記電極を貫通した端子孔が形成され、  The recess has a bottom surface, and a terminal hole penetrating the electrode is formed on the bottom surface,
前記電圧検出端子は前記端子孔に挿通され、  The voltage detection terminal is inserted through the terminal hole,
前記端子孔に挿通された電圧検出端子の一方の端部を、前記抵抗体が接触して覆うことを特徴とする電流検出用金属板抵抗器。  The current detecting metal plate resistor, wherein the resistor contacts and covers one end portion of the voltage detection terminal inserted through the terminal hole. 前記電圧検出端子は、一方の終端が、前記底面部に当接するフランジ状であることを特徴とする請求項４に記載の電流検出用金属板抵抗器。  5. The current detecting metal plate resistor according to claim 4, wherein one end of the voltage detection terminal has a flange shape in contact with the bottom surface portion.
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