JPH06130087A - Current detector - Google Patents
Current detectorInfo
- Publication number
- JPH06130087A JPH06130087A JP4283086A JP28308692A JPH06130087A JP H06130087 A JPH06130087 A JP H06130087A JP 4283086 A JP4283086 A JP 4283086A JP 28308692 A JP28308692 A JP 28308692A JP H06130087 A JPH06130087 A JP H06130087A
- Authority
- JP
- Japan
- Prior art keywords
- current detector
- resin block
- magnetic
- resin
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に大電流を検出する
装置に使用される電流検出器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current detector used in a device for detecting a large current.
【０００２】[0002]
【従来の技術】図３を参照して、従来の電流検出器の１
実施例を説明する。磁気ギャップを有する環状コア１０
０及び感磁素子１０４を備えた回路基板１０１を収納
し、内筒と外筒を有し、これらの間を一端側において塞
いでコア収納部を設けた樹脂性収納ケース１０３に、環
状コア１００及び回路基板１０１を収納する。感磁素子
１０４は、前記磁気ギャップ内に位置するように、回路
基板１０１に保持される。2. Description of the Related Art Referring to FIG.
An example will be described. Annular core 10 with magnetic gap
0 and the circuit board 101 having the magnetic sensitive element 104 are housed therein, and the inner core and the outer cylinder are provided. And the circuit board 101 is housed. The magnetic sensing element 104 is held on the circuit board 101 so as to be located in the magnetic gap.
【０００３】樹脂収納ケース１０３の中空部に、被測定
電流の流れる金属帯１０２が貫通され、金属帯１０２に
流れる電流に応じて生ずる磁気ギャップ内の磁界強度を
感磁素子１０４によって検出し、回路部（図示せず）に
よって信号処理が行なわれる。The metal band 102 through which the current to be measured flows is penetrated through the hollow portion of the resin housing case 103, and the magnetic field strength in the magnetic gap generated according to the current flowing through the metal band 102 is detected by the magnetic sensing element 104, and the circuit is detected. Signal processing is performed by a unit (not shown).
【０００４】又、回路基板１０１には、外部基板（図示
せず）の所定穴に実装するための端子２０１，２０２，
２０３，２０４が設けられている。Further, the circuit board 101 has terminals 201, 202 for mounting in predetermined holes of an external board (not shown),
203 and 204 are provided.
【０００５】[0005]
【発明が解決しようとする課題】しかし従来の電流検出
器には以下の問題点があった。However, the conventional current detector has the following problems.
【０００６】第１に、実装基板に電流検出器を実装する
場合、金属帯（バスバー）を立体的な形状とせざるを得
ず、又回路基板と金属帯（バスバー）とを別個にハンダ
付け固定されて煩雑となる問題点があった。First, when the current detector is mounted on the mounting board, the metal strip (bus bar) is forced to have a three-dimensional shape, and the circuit board and the metal strip (bus bar) are separately soldered and fixed. There was a problem that was complicated.
【０００７】第２に、樹脂ケースへの強磁性体コアの接
着、及び回路基板の接着とにより、接着工程が２工程あ
り、組立工数がかかるという問題があった。Secondly, there is a problem in that the bonding of the ferromagnetic core to the resin case and the bonding of the circuit board require two bonding steps, which increases the number of assembly steps.
【０００８】本発明による電流検出器は、上記問題点を
解消し、組立工数を短縮させ、回路基板への実装工数を
格段に短縮できる電流検出器を提供することを目的とす
る。An object of the current detector according to the present invention is to provide a current detector which solves the above problems, shortens the number of assembly steps, and significantly reduces the number of steps for mounting on a circuit board.
【０００９】[0009]
【課題を解決するための手段】本発明によれば、磁気ギ
ャップ部を有する略コの字状の磁性体コアの該磁気ギャ
ップ部を含む中空部に板状金属帯が貫通するような状態
で、前記磁性体コアと前記板状金属帯とに樹脂が施さ
れ、一体成型される樹脂ブロックを有し、該樹脂ブロッ
クの所定位置に感磁素子を搭載した基板を固定して形成
されていることを特徴とする電流検出器が得られる。According to the present invention, in a state where a plate-shaped metal band penetrates a hollow portion including a magnetic gap portion of a substantially U-shaped magnetic core having a magnetic gap portion. The magnetic core and the plate-shaped metal band are provided with a resin and integrally formed with a resin block, and a substrate on which a magnetic sensing element is mounted is fixed at a predetermined position of the resin block. A current detector characterized by the above is obtained.
【００１０】さらに、本発明によれば、前記樹脂ブロッ
クが、前記金属帯の両端部が前記樹脂ブロックから露出
するように一体成型されていることを特徴とする電流検
出器が得られる。Further, according to the present invention, there is provided a current detector characterized in that the resin block is integrally molded so that both ends of the metal band are exposed from the resin block.
【００１１】さらに、本発明によれば、前記樹脂ブロッ
クは前記中空部の一部領域が空間として残されるように
形成され、前記樹脂ブロックには感磁素子を備えた基板
を固定するための平面部が形成され、該基板は、前記感
磁素子が前記磁気ギャップ部に位置するように、前記平
面部に固定されていることを特徴とする電流検出器が得
られる。Further, according to the present invention, the resin block is formed such that a partial region of the hollow portion is left as a space, and the resin block has a flat surface for fixing a substrate having a magnetic sensing element. A portion is formed, and the substrate is fixed to the plane portion so that the magnetic sensing element is located in the magnetic gap portion.
【００１２】[0012]
【作用】強磁性体コアと金属帯（バスバー）とを樹脂に
よりあらかじめ１体成形し、樹脂ブロックとしたので、
接着工程としては回路基板と樹脂ブロックとの接着工程
のみとなり、従来の強磁性体コア接着工程が削減され、
又金属帯（バスバー）の実装工程が削除される。電流検
出器の外部基板への実装においては、金属帯（バスバ
ー）と回路基板端子とを同時に外部基板に実装しハンダ
付け工程とすることができ、従来より実装工程が大幅に
短縮される。[Function] Since the ferromagnetic core and the metal strip (bus bar) are molded in advance by resin to form a resin block,
As the bonding process, only the bonding process between the circuit board and the resin block is performed, and the conventional ferromagnetic core bonding process is reduced.
Also, the metal band (bus bar) mounting process is deleted. In mounting the current detector on the external substrate, the metal strip (bus bar) and the circuit board terminal can be mounted on the external substrate at the same time to perform a soldering process, and the mounting process is significantly shortened compared to the conventional case.
【００１３】[0013]
【実施例】以下、本発明の実施例について図面を参照し
て説明する。図１は本発明の電流検出器の樹脂ブロック
の構造を示す斜視図であり、図２は、本発明の電流検出
器の１実施例を示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the structure of a resin block of a current detector of the present invention, and FIG. 2 shows one embodiment of the current detector of the present invention.
【００１４】図１に示すように樹脂ブロック３は、磁気
ギャップ６を有する強磁性体コア１と、金属帯（バスバ
ー）２とを所定の位置関係に保持して一体成形されてい
る。金属帯２は、コの字型形状であり、その中央部が強
磁性体コア１の中空部分を貫通するような位置関係を保
持しつつ樹脂モールドされている。又、金属帯２の端部
１１，１２は樹脂ブロック３の外部に露出し、回路基板
５（図２参照）へ実装するための端子の役割を果たして
いる。As shown in FIG. 1, the resin block 3 is integrally formed by holding a ferromagnetic core 1 having a magnetic gap 6 and a metal strip (bus bar) 2 in a predetermined positional relationship. The metal band 2 has a U-shape, and is resin-molded while maintaining the positional relationship such that the central portion thereof penetrates the hollow portion of the ferromagnetic core 1. The ends 11 and 12 of the metal strip 2 are exposed to the outside of the resin block 3 and serve as terminals for mounting on the circuit board 5 (see FIG. 2).
【００１５】図２に示されるように、樹脂ブロック３に
は、回路基板５を実装するための平面部３３、及び両側
に段差部２１及び２２が設けられている。即ち、段差部
２１及び２２は回路基板５を平面部２３へ実装する位置
を規定するために設けられている。As shown in FIG. 2, the resin block 3 is provided with a plane portion 33 for mounting the circuit board 5 and step portions 21 and 22 on both sides. That is, the step portions 21 and 22 are provided to define the position where the circuit board 5 is mounted on the plane portion 23.
【００１６】回路基板５上の感磁素子４は、回路基板５
が平面部２３上にて強磁性体コア１の磁気ギャップ部分
６内に位置するように回路基板上に位置されている。The magnetic sensing element 4 on the circuit board 5 is the circuit board 5
Are located on the circuit board so as to be located in the magnetic gap portion 6 of the ferromagnetic core 1 on the plane portion 23.
【００１７】回路基板５を平面部２３上に接着固定する
ことにより電流検出器が構成される。A current detector is constructed by adhesively fixing the circuit board 5 on the flat portion 23.
【００１８】次に、本電流検出器の動作原理を以下に説
明する。Next, the operating principle of the current detector will be described below.
【００１９】金属帯（バスバー）２に被測定電流が流れ
ることにより強磁性体コア１の磁気ギャップ６内に電流
に比例した磁界が発生する。前記磁界により、感磁素子
４には電圧が発生し、この電圧を回路部（図示せず）に
て増幅及び信号処理を行ない、出力端子（図示せず）に
出力される。When a current to be measured flows through the metal strip (bus bar) 2, a magnetic field proportional to the current is generated in the magnetic gap 6 of the ferromagnetic core 1. A voltage is generated in the magnetic sensitive element 4 by the magnetic field, and this voltage is amplified and signal-processed in a circuit section (not shown) and output to an output terminal (not shown).
【００２０】上記構造によれば樹脂ブロック３の平面部
２３に、回路基板５を接着固定する工程のみで電流検出
器が構成されるので、従来の強磁性体コア１００と樹脂
収納ケース１０３との接着工程、及び金属帯（バスバ
ー）１０２の実装工程が削減され、製造工程費が大幅に
減少する（図３参照）。According to the above structure, the current detector is constructed only by the step of adhering and fixing the circuit board 5 to the flat portion 23 of the resin block 3, so that the conventional ferromagnetic core 100 and the resin storage case 103 are combined. The bonding process and the mounting process of the metal strip (bus bar) 102 are reduced, and the manufacturing process cost is significantly reduced (see FIG. 3).
【００２１】又、電流検出器を外部基板に実装する場
合、金属帯（バスバー）２の端子１１，１２及び回路基
板５の端子３１，３２，３３，３４を同時に外部基板の
所定穴に実装し（図示せず）、ハンダ付け処理が実施で
きるので、従来のように回路基板１０１に設けられてい
る端子２０１，２０２，２０３，２０４と金属帯（バス
バー）１０２とを別々に実装した場合（図３参照）に比
べて大幅に実装工程の時間が短縮される。When the current detector is mounted on the external board, the terminals 11, 12 of the metal strip (bus bar) 2 and the terminals 31, 32, 33, 34 of the circuit board 5 are simultaneously mounted on the predetermined holes of the external board. Since the soldering process can be performed (not shown), when the terminals 201, 202, 203, 204 provided on the circuit board 101 and the metal strip (bus bar) 102 are separately mounted as in the conventional case (see FIG. 3), the time required for the mounting process is significantly shortened.
【００２２】[0022]
【発明の効果】本発明の電流検出器によれば、組立工数
を大幅に軽減でき、又外部基板への実装工数を大幅に短
縮可能な電流検出器を提供することができる。According to the current detector of the present invention, it is possible to provide a current detector which can greatly reduce the number of assembly steps and the number of steps for mounting on an external substrate.
【図１】本発明による樹脂ブロックの構造を示す斜視図
である。FIG. 1 is a perspective view showing a structure of a resin block according to the present invention.
【図２】本発明による電流検出器の１実施例を示す斜視
図である。FIG. 2 is a perspective view showing an embodiment of a current detector according to the present invention.
【図３】従来の電流検出器の１実施例を示す斜視図であ
る。FIG. 3 is a perspective view showing an embodiment of a conventional current detector.
１，１００ 強磁性体コア ２，１０２ 金属帯（バスバー） ３ 樹脂ブロック ４，１０４ 感磁素子 ５，１０１ 回路基板 ６ 磁気ギャップ ２１，２２ 段差部 ２３ 平面部 ３１，３２，３３，３４，２０１，２０２，２０３，２
０４ 端子 １０３ 樹脂収納ケース1,100 Ferromagnetic Core 2,102 Metal Band (Bus Bar) 3 Resin Block 4,104 Magnetic Sensitive Element 5,101 Circuit Board 6 Magnetic Gap 21,22 Stepped Section 23 Plane Section 31, 32, 33, 34, 201, 202, 203, 2
04 terminal 103 resin storage case
Claims (3)
性体コアの該磁気ギャップ部を含む中空部に板状金属帯
が貫通するような状態で、前記磁性体コアと前記板状金
属帯とに樹脂が施され、一体成型される樹脂ブロックを
有し、該樹脂ブロックの所定位置に感磁素子を搭載した
基板を固定して形成されていることを特徴とする電流検
出器。1. The magnetic material core and the plate-shaped metal in a state where a plate-shaped metal band penetrates a hollow portion including the magnetic gap portion of a substantially U-shaped magnetic material core having a magnetic gap portion. A current detector, characterized in that a resin is applied to the band and has a resin block integrally molded, and a substrate on which a magnetic sensing element is mounted is fixed to a predetermined position of the resin block.
記樹脂ブロックが、前記金属帯の両端部が前記樹脂ブロ
ックから露出するように一体成型されていることを特徴
とする電流検出器。2. The current detector according to claim 1, wherein the resin block is integrally molded so that both ends of the metal strip are exposed from the resin block.
いて、前記樹脂ブロックは前記中空部の一部領域が空間
として残されるように形成され、前記樹脂ブロックには
感磁素子を備えた基板を固定するための平面部が形成さ
れ、該基板は、前記感磁素子が前記磁気ギャップ部に位
置するように、前記平面部に固定されていることを特徴
とする電流検出器。3. The current detector according to claim 1, wherein the resin block is formed such that a partial region of the hollow portion is left as a space, and the resin block includes a magnetic sensing element. A current detector characterized in that a flat portion for fixing the substrate is formed, and the substrate is fixed to the flat portion so that the magnetic sensing element is located in the magnetic gap portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4283086A JPH06130087A (en) | 1992-10-21 | 1992-10-21 | Current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4283086A JPH06130087A (en) | 1992-10-21 | 1992-10-21 | Current detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06130087A true JPH06130087A (en) | 1994-05-13 |
Family
ID=17661040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4283086A Withdrawn JPH06130087A (en) | 1992-10-21 | 1992-10-21 | Current detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06130087A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0867725A1 (en) * | 1997-03-24 | 1998-09-30 | Nana Electronics Co., Ltd. | Current sensor |
| WO2001086309A1 (en) * | 2000-05-09 | 2001-11-15 | Siemens Metering Ag | Magnetic circuit arrangement for determining an electrical current |
| US6781359B2 (en) | 2002-09-20 | 2004-08-24 | Allegro Microsystems, Inc. | Integrated current sensor |
| JP2011064648A (en) * | 2009-09-18 | 2011-03-31 | Tokai Rika Co Ltd | Current sensor |
| WO2012026256A1 (en) * | 2010-08-26 | 2012-03-01 | 株式会社オートネットワーク技術研究所 | Current detection device |
| WO2012172701A1 (en) * | 2011-06-15 | 2012-12-20 | 株式会社オートネットワーク技術研究所 | Current detection device |
| JP2019152558A (en) * | 2018-03-05 | 2019-09-12 | 富士電機メーター株式会社 | Current sensor and voltmeter |
-
1992
- 1992-10-21 JP JP4283086A patent/JPH06130087A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0867725A1 (en) * | 1997-03-24 | 1998-09-30 | Nana Electronics Co., Ltd. | Current sensor |
| WO2001086309A1 (en) * | 2000-05-09 | 2001-11-15 | Siemens Metering Ag | Magnetic circuit arrangement for determining an electrical current |
| US6781359B2 (en) | 2002-09-20 | 2004-08-24 | Allegro Microsystems, Inc. | Integrated current sensor |
| JP2006500561A (en) * | 2002-09-20 | 2006-01-05 | アレグロ・マイクロシステムズ・インコーポレーテッド | Integrated current sensor |
| US7265531B2 (en) | 2002-09-20 | 2007-09-04 | Allegro Microsystems, Inc. | Integrated current sensor |
| JP2011064648A (en) * | 2009-09-18 | 2011-03-31 | Tokai Rika Co Ltd | Current sensor |
| WO2012026256A1 (en) * | 2010-08-26 | 2012-03-01 | 株式会社オートネットワーク技術研究所 | Current detection device |
| WO2012172701A1 (en) * | 2011-06-15 | 2012-12-20 | 株式会社オートネットワーク技術研究所 | Current detection device |
| JP2013002894A (en) * | 2011-06-15 | 2013-01-07 | Auto Network Gijutsu Kenkyusho:Kk | Current detecting device |
| CN103597362A (en) * | 2011-06-15 | 2014-02-19 | 株式会社自动网络技术研究所 | Current detection device |
| US9255976B2 (en) | 2011-06-15 | 2016-02-09 | Autonetworks Technologies, Ltd. | Current detection device |
| JP2019152558A (en) * | 2018-03-05 | 2019-09-12 | 富士電機メーター株式会社 | Current sensor and voltmeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000104 |