JPH0416939Y2 - - Google Patents
Info
- Publication number
- JPH0416939Y2 JPH0416939Y2 JP1985052731U JP5273185U JPH0416939Y2 JP H0416939 Y2 JPH0416939 Y2 JP H0416939Y2 JP 1985052731 U JP1985052731 U JP 1985052731U JP 5273185 U JP5273185 U JP 5273185U JP H0416939 Y2 JPH0416939 Y2 JP H0416939Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- pot
- core
- coil
- current
- 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.)
- Expired
Links
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000004907 flux Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、電気機器、電子機器及び電気機械等
に使用される直流、またはパルス状電流を検出す
るための電流検出器に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a current detector for detecting direct current or pulsed current used in electrical equipment, electronic equipment, electric machines, etc.
一般に多く使用されている交流電流用の電流検
出器（以後AC−CTと略す）は、例えば第３図に
示すように、環状の磁性体コア１０１に被検出電
流が流れる導線を１〜数10ターン巻いて１次側コ
イル１０２とし、２次側に検出用コイル１０３を
巻いて構成する。そして、１次側コイル１０２に
交流電流を流したときに生ずる磁性体コア１０１
内の磁束の変化によつて、２次側コイル１０３に
誘起される電圧を電圧検出器１０４で検出するよ
うにしたものである。
A current detector for alternating current (hereinafter abbreviated as AC-CT), which is commonly used, has a ring-shaped magnetic core 101 with one to several tens of conductive wires through which the current to be detected flows, as shown in FIG. 3, for example. The primary coil 102 is formed by winding turns, and the detection coil 103 is wound on the secondary side. A magnetic core 101 is generated when an alternating current is passed through the primary coil 102.
A voltage detector 104 detects the voltage induced in the secondary coil 103 due to changes in the magnetic flux within the secondary coil 103.
これに対するに、直流、またはパルス状電流を
検出するための電流検出器（以後DC−CTと略
す）は、第４図に示すように、回周形状を有する
磁性体コア２０１の一部に形成された直線部分に
磁気ギヤツプ２０３を設け、そのギヤツプ内に感
磁素子２０４（例えば、ホール素子、磁気抵抗素
子等）を置く。そして、AC−CTと同様に被検出
電流を１〜数10ターンの１次側コイル２０２に流
すことによつて、磁性体コア２０１に発生する磁
束密度を磁気ギヤツプ２０３内に置かれた感磁素
子２０４から電気的出力を検出するようにしてい
る。このDC−CTによれば、AC−CTに比べて直
流電流から交流電流まで検出することができ、
又、出力が周波数に関係しないので周波数成分が
一定でないパルス電流等を検出するのに好適であ
る。 On the other hand, a current detector (hereinafter abbreviated as DC-CT) for detecting direct current or pulsed current is formed in a part of a magnetic core 201 having a circular shape, as shown in FIG. A magnetic gap 203 is provided in the straight line portion, and a magnetic sensing element 204 (for example, a Hall element, a magnetoresistive element, etc.) is placed within the gap. Similarly to AC-CT, by passing the current to be detected through the primary coil 202 of one to several tens of turns, the magnetic flux density generated in the magnetic core 201 is controlled by the magnetic flux density placed in the magnetic gap 203. Electrical output from element 204 is detected. According to this DC-CT, it is possible to detect from direct current to alternating current compared to AC-CT.
Furthermore, since the output is not related to frequency, it is suitable for detecting pulse currents and the like whose frequency components are not constant.
第５図は、第４図の従来例の外観構造を斜視図
により示したものである。この構造によれば、磁
性体コア２０１の磁気ギヤツプ部分及び感磁素子
はケース２０６内に収容され、樹脂により固定さ
れる。ケース２０６の外にある１次側コイル２０
２には、ボビン２０５を巻枠として巻線が施こさ
れている。 FIG. 5 is a perspective view showing the external structure of the conventional example shown in FIG. According to this structure, the magnetic gap portion of the magnetic core 201 and the magnetic sensing element are housed in the case 206 and fixed with resin. Primary coil 20 outside the case 206
2 is wound with a bobbin 205 as a winding frame.
〔考案が解決しようとする問題点〕
しかしながら、上記のごとき従来技術のDC−
CT構造では、１次側コイル２０２が外装ケース
２０６の外部にあるため、動作中に器物が触れる
ことにより、コイル２０２の線材を傷つけて不良
にしてしまつたり、絶縁状態を著しく低下させる
という不都合があつた。また、基板上への実装に
際して、１次側コイル２０２のリード線が太いた
めに端末の位置決めが容易でないという欠点があ
つた。[Problem to be solved by the invention] However, the above-mentioned conventional technology DC-
In the CT structure, the primary coil 202 is located outside the outer case 206, so if objects come into contact with it during operation, the wire of the coil 202 may be damaged and become defective, or the insulation condition may be significantly deteriorated. It was hot. Furthermore, when mounting on a board, there was a drawback that positioning of the terminal was not easy because the lead wire of the primary coil 202 was thick.
本考案の目的は、コイルおよび感磁素子をポツ
ト型磁性体コアの内部にセツトし、コイル枠体と
一体で形成された外部への延長部分に複数のピン
端子を設け、リード線をそれぞれピン端子に接続
することによつて、上記従来の欠点を除去し、コ
イルを外障から防ぐとともに、リード線の位置決
めを容易にすることのできる電流検出器を提供す
ることにある。
The purpose of this invention is to set a coil and a magnetic sensing element inside a pot-shaped magnetic core, provide a plurality of pin terminals on the external extension part formed integrally with the coil frame, and connect the lead wires to each pin. It is an object of the present invention to provide a current detector which can eliminate the above-mentioned conventional drawbacks, protect the coil from external damage, and facilitate positioning of the lead wire by connecting to a terminal.
本考案によれば、磁性体のコアの主磁路の一部
に磁気ギヤツプを設け、前記主磁路の周囲に検出
しようとする電流を通す１次側コイルを巻き付
け、前記磁気ギヤツプに感磁素子を配置し、該感
磁素子に誘起される電圧から前記電流の大きさを
検出するように構成した電流検出器において、前
記磁性体のコアが、上下の面を閉止した筒状体に
おいて中心部で上下を連絡した主磁路を有するポ
ツト形磁性体コアであり、前記一次側コイルが該
ポツト型磁性体コアに固定したコイルであり、か
つ、前記１次側コイルの入出力リード及び前記感
磁素子の入出力リードが前記ポツト型コアの外壁
を通して外部に引き出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, a magnetic gap is provided in a part of the main magnetic path of a magnetic core, and a primary coil that conducts the current to be detected is wound around the main magnetic path, and the magnetic gap is sensitive to magnetism. In a current detector configured to detect the magnitude of the current from the voltage induced in the magnetically sensitive element, the core of the magnetic material is located at the center of a cylindrical body with closed upper and lower surfaces. The pot-shaped magnetic core has a main magnetic path that connects the upper and lower parts at the top and bottom, and the primary coil is a coil fixed to the pot-shaped magnetic core, and the input/output leads of the primary coil and the A current detector is obtained, characterized in that the input/output leads of the magneto-sensitive element are led out through the outer wall of the pot-shaped core.
次に、本考案による電流検出器について、実施
例を挙げ、図面を参照して説明する。
Next, the current detector according to the present invention will be described by giving examples and referring to the drawings.
第１図は、本考案による実施例の構造を側断面
図により示したものである。この実施例は、上下
の面が閉止され中心部で上下を連絡する主磁路に
磁気ギヤツプ３を有し、周囲が放射状の閉磁路で
形成されたポツト型磁性体コア１と、外部接続用
ピン端子を持つボビン６に線材が数10ターン巻か
れ、主磁路をなかにしてセツトされた被検出電流
用のコイル２と、磁気ギヤツプ３内に挿入された
ホール素子等の感磁素子４とを主要素として構成
されている。そして、感磁素子４の入出力リード
４ａ，４ｂ及びコイル２の入出力リード２ａ，２
ｂは、それぞれポツトの内部から引き出され、ボ
ビン６の外部に設けられた複数のピン端子５にそ
れぞれからげられたうえ、半田付けされる。な
お、磁性体コア１はａ−a′を結ぶ線を境界として
２つに分離できるようになつており、ポツトの内
部に感磁素子４及びコイル２の巻かれたボビン６
をセツト後、接着剤やシリコンRTV等の固着剤
で固定させ、振動によつて位置変動が起こらない
ようにする。 FIG. 1 shows a side sectional view of the structure of an embodiment of the present invention. This embodiment has a pot-shaped magnetic core 1 whose upper and lower surfaces are closed and has a magnetic gap 3 in the main magnetic path connecting the upper and lower parts at the center, and a radial closed magnetic path around the periphery, and a pot-shaped magnetic core 1 for external connection. Several tens of turns of wire are wound around a bobbin 6 having a pin terminal, and a coil 2 for the current to be detected is set in the main magnetic path, and a magnetic sensing element 4 such as a Hall element inserted into a magnetic gap 3. It is composed of the main elements. Then, the input/output leads 4a, 4b of the magnetic sensing element 4 and the input/output leads 2a, 2 of the coil 2.
b are pulled out from the inside of the pot, respectively connected to a plurality of pin terminals 5 provided on the outside of the bobbin 6, and then soldered. The magnetic core 1 can be separated into two parts with the line connecting a-a' as the boundary, and inside the pot there is a bobbin 6 on which the magnetic sensing element 4 and the coil 2 are wound.
After setting, fix it with a fixing agent such as adhesive or silicone RTV to prevent the position from changing due to vibration.
第２図は本考案による他の実施例の構造を側断
面図により示したものである。図において、１１
はポツト型磁性体コア、１３は主磁路の磁気ギヤ
ツプ、１４は感磁素子であり、いずれも第１図の
実施例において述べたものと同じ構造と機能をも
つている。コイル１２は、この例では、ボビンを
兼ねた平面板１６の両面にリード膜１２ａ，１２
ｂがプリントされている。そして、リード膜１２
ａ，１２ｂのプリントされた平板部はポツトから
外部に引き出されており、その先端部に設けられ
た複数のピン端子１５に上記のリード膜１２ａ，
１２ｂが圧着された状態で接続されている。ま
た、感磁素子１４のリード線１４ａ，１４ｂは、
第１図の実施例と同じようにポツトから引き出さ
れてそれぞれ他のピン端子に接続されている。 FIG. 2 is a side sectional view showing the structure of another embodiment of the present invention. In the figure, 11
1 is a pot-shaped magnetic core, 13 is a magnetic gap in the main magnetic path, and 14 is a magnetic sensing element, all of which have the same structure and function as described in the embodiment of FIG. In this example, the coil 12 has lead films 12a and 12 on both sides of a flat plate 16 that also serves as a bobbin.
b is printed. Then, the lead film 12
The flat plate portions a and 12b printed on them are pulled out from the pot, and the lead films 12a and 12b are connected to a plurality of pin terminals 15 provided at the tips of the flat plate portions.
12b is connected in a crimped state. Further, the lead wires 14a and 14b of the magnetic sensing element 14 are
As in the embodiment of FIG. 1, they are drawn out from the pot and connected to the other pin terminals, respectively.
以上の説明により明らかなように、本考案によ
れば、コイルおよび感磁素子をポツト型磁性体コ
アの内部にセツトし、これ等の入出力リードをコ
イル枠体の外部延長部分に取付けた複数のピン端
子にそれぞれ接続することによつて、使用中にコ
イルを損傷から防ぐことは勿論、コイルや感磁素
子のリードの位置決めが確定され、基板への実装
が容易になるなど、実装工数の節減と信頼性の向
上に対して得られる効果は大きい。
As is clear from the above explanation, according to the present invention, a coil and a magnetic sensing element are set inside a pot-shaped magnetic core, and these input/output leads are attached to an external extension of a coil frame. By connecting to the pin terminals of each, not only can the coil be prevented from being damaged during use, but the positioning of the coil and magnetic sensing element leads can be determined, making mounting on the board easier, and reducing the number of mounting steps. The benefits in terms of savings and increased reliability are significant.
第１図は本考案による実施例の構造を示す側断
面図、第２図は本考案による他の実施例の構造を
示す側断面図、第３図は従来の交流電流を検出す
る電流検出器の構成例を示す図、第４図は従来の
直流電流を検出する電流検出器の構成例を示す
図、第５図は、第４図における従来例の外観構造
を示す斜視図である。
図において、１，１１はポツト型磁性体コア、
２，１２はコイル、２ａ，２ｂ，１２ａ，１２ｂ
はコイルのリード、３，１３は磁気ギヤツプ、
４，１４は感磁素子、４ａ，４ｂ，１４ａ，１４
ｂは感磁素子のリード、５，１５はピン端子、６
はボビン、１６は平面板である。
Fig. 1 is a side sectional view showing the structure of an embodiment according to the present invention, Fig. 2 is a side sectional view showing the structure of another embodiment according to the invention, and Fig. 3 is a conventional current detector for detecting alternating current. FIG. 4 is a diagram showing an example of the configuration of a conventional current detector for detecting direct current, and FIG. 5 is a perspective view showing the external structure of the conventional example in FIG. 4. In the figure, 1 and 11 are pot-shaped magnetic cores,
2 and 12 are coils, 2a, 2b, 12a, 12b
is the coil lead, 3 and 13 are the magnetic gaps,
4, 14 are magnetic sensing elements, 4a, 4b, 14a, 14
b is the lead of the magnetic sensing element, 5 and 15 are pin terminals, 6
1 is a bobbin, and 16 is a flat plate.
Claims (1)
設け、前記主磁路の周囲に検出しようとする電流
を通す１次側コイルを巻き付け、前記磁気ギヤツ
プに感磁素子を配置し、該感磁素子に誘起される
電圧から前記電流の大きさを検出するように構成
した電流検出器において、前記磁性体のコアが、
上下の面を閉止した筒状体において中心部で上下
を連絡した主磁路を有するポツト形磁性体コアで
あり、前記一次側コイルが該ポツト型磁性体コア
に固定したコイルであり、かつ、前記１次側コイ
ルの入出力リード及び前記感磁素子の入出力リー
ドが前記ポツト型コアの外壁を通して外部に引き
出されていることを特徴とする電流検出器。 A magnetic gap is provided in a part of the main magnetic path of the magnetic core, a primary coil that conducts the current to be detected is wound around the main magnetic path, a magnetic sensing element is placed in the magnetic gap, In a current detector configured to detect the magnitude of the current from a voltage induced in a magneto-sensitive element, the core of the magnetic material is
A pot-shaped magnetic core having a main magnetic path that connects the upper and lower sides at the center in a cylindrical body with upper and lower surfaces closed, and the primary coil is a coil fixed to the pot-shaped magnetic core, and A current detector characterized in that an input/output lead of the primary coil and an input/output lead of the magnetic sensing element are led out through an outer wall of the pot-shaped core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985052731U JPH0416939Y2 (en) | 1985-04-11 | 1985-04-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985052731U JPH0416939Y2 (en) | 1985-04-11 | 1985-04-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61170073U JPS61170073U (en) | 1986-10-22 |
| JPH0416939Y2 true JPH0416939Y2 (en) | 1992-04-15 |
Family
ID=30572942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985052731U Expired JPH0416939Y2 (en) | 1985-04-11 | 1985-04-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0416939Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002349497A1 (en) * | 2001-11-26 | 2003-06-10 | Asahi Kasei Electronics Co., Ltd. | Current sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4947675U (en) * | 1972-07-28 | 1974-04-25 |
-
1985
- 1985-04-11 JP JP1985052731U patent/JPH0416939Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61170073U (en) | 1986-10-22 |
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