JPS61281983A - Magnetic sensor - Google Patents
Magnetic sensorInfo
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- JPS61281983A JPS61281983A JP12390685A JP12390685A JPS61281983A JP S61281983 A JPS61281983 A JP S61281983A JP 12390685 A JP12390685 A JP 12390685A JP 12390685 A JP12390685 A JP 12390685A JP S61281983 A JPS61281983 A JP S61281983A
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Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、磁気センサーに関するのものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a magnetic sensor.
一般に、この種の磁気センサーは、環状鉄心の上に、−
黒方向に捲回せる励磁用１次コイルと、１次コイルの生
ずる励磁磁束に対し、はぼ鎮交磁束が零となるように配
置された２次コイルとを有する。今、仮りに、上記鉄心
の成る直径方向に磁界を印加すると、上記２次コイルの
両端には、該磁界に依って生ずる鉄心内の磁束の該２次
コイルの入力軸方向成分の大きさ及び向きに対応する第
２高調波電圧（以下２次電圧と云う）が現れる。Generally, this kind of magnetic sensor has −
It has a primary excitation coil that can be wound in the black direction, and a secondary coil that is arranged so that the interchanging magnetic flux is zero with respect to the excitation magnetic flux generated by the primary coil. Now, if a magnetic field is applied in the diametrical direction of the iron core, the magnitude of the component of the magnetic flux in the iron core generated by the magnetic field in the direction of the input axis of the secondary coil and A second harmonic voltage (hereinafter referred to as secondary voltage) corresponding to the direction appears.
このとき、複数の２次コイルを入力軸を異にして配置す
れば、各２次コイルに現れる２次電圧から印加磁界の方
向、即ち磁気方位を求めることができる。At this time, if a plurality of secondary coils are arranged with different input axes, the direction of the applied magnetic field, that is, the magnetic orientation can be determined from the secondary voltage appearing in each secondary coil.
然し乍ら、この種の磁気センサーは、過飽和励磁するた
め、１次コイルの撞き方の不均一は、環状鉄心内に於て
励磁磁束の不均一を生じ、個々の２次コイルに対応する
励磁磁界の強さが異り、磁気方位誤差の原因となる。However, since this type of magnetic sensor is excited by supersaturation, non-uniformity in the way the primary coil is twisted causes non-uniformity in the excitation magnetic flux within the annular core, and the excitation magnetic field corresponding to each secondary coil becomes non-uniform. The strength differs, causing magnetic orientation errors.
また、複数の２次コイルの入力軸間の角度誤差も、当然
、磁気方位誤差となる。Moreover, the angular error between the input axes of the plurality of secondary coils naturally also becomes a magnetic azimuth error.
従来、この種の磁気センサーに於ては、１次コイルは環
状鉄心の全周に亘ってできるだけ均一に捲回し、撞き上
がった１次コイルの内径または外径を案内にして、これ
を２次コイルの捲枠に入れ、次に２次コイルをその上に
捲回する等の方法がとられた。しかし、このような方法
は、環状鉄心全周に亘って均一な１次コイルの捲回が回
能であるだけでなく、更に環状鉄心に捲回したコイルは
、案内となるべき外形寸法が正確にできにくいと云う重
大な欠点があった。Conventionally, in this type of magnetic sensor, the primary coil is wound as uniformly as possible over the entire circumference of the annular core, and the secondary coil is wound using the inner or outer diameter of the wound primary coil as a guide. A method was used in which the coil was placed in a coil winding frame and then a secondary coil was wound on top of it. However, with this method, not only is it possible to wind the primary coil uniformly around the entire circumference of the annular core, but also the external dimensions of the coil wound around the annular core are accurate. The major drawback was that it was difficult to create.
本発明は上述の如き従来の欠点を除去した磁気センサー
を提供するもので、これは、環状鉄心上に捲回した１次
コイル及び２組以上の捲線群より成る２次コイルとから
構成された磁気センサーに於て、１次コイルを、上記２
次撞線群と同数又はその整数倍の前記環状鉄心と同心状
の１次コイル捲枠の中心軸方向の端面に於て該中心軸方
向に突出し等間隔に配置せる。仕切用の突起部間の上記
１次コイル捲枠の各部に等しい捲数を以って捲回すると
共に、上記突起部に関連し、上記１次コイルの位置決め
をなす２次コイル捲枠を設けて構成される。The present invention provides a magnetic sensor that eliminates the above-mentioned drawbacks of the conventional magnetic sensor, and is composed of a primary coil wound on a circular iron core and a secondary coil consisting of two or more winding groups. In the magnetic sensor, the primary coil is
The primary coil winding frames are arranged at equal intervals so as to protrude in the direction of the center axis at the end face of the primary coil winding frame which is concentric with the annular iron core in the same number as the secondary wire group or an integral multiple thereof. Each part of the primary coil winding frame between the partitioning protrusions is wound with an equal number of turns, and a secondary coil winding frame is provided for positioning the primary coil in relation to the protrusion. It consists of
環状鉄心上に捲回した１次コイルと２組以上の捲線群よ
りなる２次コイルとを有する磁気センサーに於て、上記
２次撞線群と同数又はその整数倍の上記環状鉄心と同心
状の１次コイル捲枠の中心軸方向の端面に於て該中心軸
方向に突出し等間隔に配置せる仕切用の突起部間の上記
１次コイル捲枠の各部に１次コイルを等しい捲数を以っ
て捲回することにより１次コイルを環状鉄心の全周に亘
り均一に捲回する一方、上記突起部に関連し、上記１次
コイルの位置決めをなす２次コイル捲枠を設けることに
より、両者の位置決めを正確且つ確実になす。In a magnetic sensor having a primary coil wound on an annular core and a secondary coil consisting of two or more winding groups, the coil is concentric with the annular iron core in the same number as the secondary winding groups or an integral multiple thereof. The primary coil is wound with an equal number of turns in each part of the primary coil winding frame between the partition projections which protrude in the direction of the central axis and are arranged at equal intervals on the end face in the direction of the central axis of the primary coil winding frame. Thus, by winding the primary coil, the primary coil is wound uniformly over the entire circumference of the annular core, and by providing a secondary coil winding frame that positions the primary coil in relation to the protrusion. , to ensure accurate and reliable positioning of both.
以下、本発明の一実施例を図面に基づき説明する。 Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図は本発明による磁気センサーの一実施例の分解斜
視図であり、第２図はその組立状態に於ける中心軸（０
−０）に垂直な面に沿った断面図である。同図に於て、
（１）は磁気センサーの全体として環状の１次コイル組
立体を全体として示し、（２１） 、 （２１’）は
両者間に１次コイル組立体（１）を収納保持する円筒状
の２次コイル捲枠を夫々示す。FIG. 1 is an exploded perspective view of one embodiment of the magnetic sensor according to the present invention, and FIG. 2 shows the central axis (0
-0) is a cross-sectional view taken along a plane perpendicular to the plane. In the same figure,
(1) shows the annular primary coil assembly as a whole of the magnetic sensor, and (21) and (21') show the cylindrical secondary coil assembly that houses and holds the primary coil assembly (1) between them. Each coil winding frame is shown.
尚、両２次コイル捲枠（２１） 、 （２１’）は、
１次コイル組立体（１１に関し、対称である。In addition, both secondary coil winding frames (21) and (21') are as follows:
The primary coil assembly (11) is symmetrical.
１次コイル組立体（１）の環状鉄心（１１０）は、断面
コ字状の環状の１次コイル捲枠（１２１）内に納めれる
。この１次コイル捲枠（１２１）は、その円周上に等間
隔を以って、中心軸（０−０）に平行で第１図に於て右
側に突出している各々同−寸法且つ同一形状の複数個の
例えば６個の突起部（１４１：・・・・（１４６）を有
する。一方、１次イル捲枠（１２１：の捲枠蓋（１２２
）は、前者と同様の環状で、且つその円周上に等間隔を
以って、中心軸（０−０）と平行で、第１図に於て左側
に突出している各々同−寸法且つ同一形状の６個の突起
部（１４１’）・・・・（１４６’）を有する。捲枠蓋
（１２２）は、その突起部（１４１’）・・・・（１４
６’）と１次コイル捲枠（１２１）の突起部（１４１）
・・・・（１４６）とが同一円周上に於て一致するよう
に、１次コイル擾枠（１２１）に取付けられる。１次コ
イル（１３１）・・・・（１３６）は、上述の如く一体
となされた１次コイル捲枠（１２１）及び捲枠蓋（１２
２）上、それ等の対をなす突起部間の部分に、各々等し
い捲数で、同一方向に捲回され１次コイル組立体（１）
が形成される。The annular core (110) of the primary coil assembly (1) is housed in an annular primary coil winding frame (121) having a U-shaped cross section. The primary coil winding frames (121) are arranged at equal intervals on the circumference, parallel to the central axis (0-0), and protruding to the right in FIG. It has a plurality of, for example, six protrusions (141:...(146)) in the shape.On the other hand, the winding frame cover (122) of the primary winding frame (121:
) have the same annular shape as the former, and are equally spaced on its circumference, parallel to the central axis (0-0), and protruding to the left in Fig. 1, each having the same dimensions and It has six protrusions (141')...(146') of the same shape. The winding frame lid (122) has its protrusion (141') (14
6') and the protrusion (141) of the primary coil winding frame (121)
... (146) are attached to the primary coil frame (121) so that they coincide on the same circumference. The primary coils (131)...(136) are integrated with the primary coil winding frame (121) and the winding frame cover (12), which are integrated as described above.
2) The primary coil assembly (1) is wound in the same direction with the same number of turns in the upper part between the pair of protrusions.
is formed.
両２次コイル擾枠（２１） 、 （２１’）は、夫々
それ等の底部に同心状の環状溝（２１０）を有し、１次
コイル組立体（１１を収納する際は、１次コイル組立体
（１）の突起部（１４１）・・・・（１４６）及び（１
４１’）・・・・（１４６’）の円弧部が、両捲枠（２
１） 、 （２１’）の環状溝（２１０）の側壁（２
１１）及び（２１２’）の少なくとも１個と夫々対接す
る如く、環状溝（２１０）の側壁（２１１）及び（２１
２）の直径が選択されている。尚、このとき、対接しな
い側壁は特に設けなくでも良い、又、各環状溝（２１０
）の深さｈｌと、１次コイル捲枠（１２１’）及び捲枠
蓋（１２２）より中心軸（０−０）方向に突出している
各突起部（１４１）・・・・（１４６）及び（１４１’
）・・・・（１４６’）の中心軸（０−０）方向に突出
せる長さ！！及び１２ （ただしＪｔ＝１２）とは、１
次コイル（１）の導線径及びコイルの層数等を考慮して
その厚さより大に選択されている。更に、２次コイル捲
枠（２１） 、 （２１’）の夫々の開口端面（２２
０）より夫々に設けられた環状溝（２１０）の底部まで
の深さｈ２は、１次コイル捲枠（１２１）及び捲枠蓋（
１２２）に設けられた対をなす突起部（１４１）・・・
・（１４６）及び（１４１’）・・・・（１４６’）の
軸（０−０）方向の両端面間の距離ｌの２分の１より若
干小さく選択されている。２次コイル捲枠（２１） 、
（２１’）に１次コイル組立体（１）を組込むには
、１次コイル擾枠（１２１）及び捲枠蓋（１２２）に設
けられた突起部（１４１）・・・・（１４６）及び（１
４１’）・・・・（１４６’）の中心が、２次コイル捲
枠（２１） 、 （２１’）に夫々設けた突起部（１
４１）・・・・（１４６）及び（１４１’）・・・・（
１４６’）と同数の２次コイルの仕切用の突起部（２４
１）・・・・（２４６”）及び（２４１’）・・・・（
２４６’）の中心と一致するようにする。一方、２次コ
イル（２６１’）・・・・（２６６）は、１次コイル組
立体（１）を収納した状態の２次コイル捲枠（２１）
、 （２１’）の突起部間の捲線収納部（２３１）・
・・・（２３６’）及び（２３１’）・・・・（２３６
’）に各々等しい層数を以って捲回され（第３図参照）
、相対する組の２次コイル（２６１） 、 （２６４
） ； （２６２） 、 （２６５）及び（２６
３） 、 （２６６）は、励磁磁束に対し逆極性に接
続し、各々１組として、３組の２次コイルをスター又は
デルタに結線する。尚、２次コイルの捲線収納部（２３
１）・・・・（２３６）及び（２３１’）・・・・（２
３６’）の捲枠（２１） 、 （２１’）の円周上の
長さ、即ち弧の長さは、全て相等しく、且つ等間隔に亘
るように配置されている。尚、第３図Ａは上述の如く構
成した磁気センサーの側面図であり、同図Ｂは同図Ａの
Ｂ−Ｂ線に沿った断面図である。Both secondary coil frames (21) and (21') each have a concentric annular groove (210) at their bottom, and when storing the primary coil assembly (11), the primary coil Projections (141)...(146) and (1) of assembly (1)
41')...(146') is connected to both winding frames (2
1), (21') side wall (210) of the annular groove (210)
The side walls (211) and (21) of the annular groove (210) are in contact with at least one of the grooves (211) and (212'), respectively.
2) diameter is selected. At this time, it is not necessary to provide side walls that do not face each other, and each annular groove (210
) and the protrusions (141) (146) protruding from the primary coil winding frame (121') and the winding frame cover (122) in the direction of the central axis (0-0). (141'
)... Length that can protrude in the central axis (0-0) direction of (146')! ! and 12 (Jt=12) means 1
It is selected to be larger than the thickness of the next coil (1) in consideration of the conductor diameter and the number of layers of the coil. Furthermore, the opening end surfaces (22) of the secondary coil winding frames (21) and (21') are
The depth h2 from 0) to the bottom of the annular groove (210) provided in each of the primary coil winding frame (121) and the winding frame lid (
Paired protrusions (141) provided on 122)...
- (146) and (141')...The distance l between both end faces of (146') in the axis (0-0) direction is selected to be slightly smaller than one-half. Secondary coil winding frame (21),
In order to assemble the primary coil assembly (1) into (21'), the protrusions (141)... (146) provided on the primary coil frame (121) and the winding frame cover (122) and (1
41') ... (146') is located at the protrusion (1) provided on the secondary coil winding frame (21) and (21'), respectively.
41)...(146) and (141')...(
146') and the same number of secondary coil partition protrusions (24
1)...(246") and (241')...(
246'). On the other hand, the secondary coil (261')... (266) is a secondary coil winding frame (21) in which the primary coil assembly (1) is stored.
, winding storage part (231) between the protrusions of (21').
...(236') and (231')...(236
) with the same number of layers (see Figure 3).
, opposing sets of secondary coils (261), (264
); (262), (265) and (26
3) and (266) are connected with opposite polarity to the excitation magnetic flux, and three sets of secondary coils are connected in a star or delta configuration, each as one set. In addition, the winding storage section of the secondary coil (23
1)...(236) and (231')...(2
The circumferential lengths of the winding frames (21) and (21') of 36'), that is, the lengths of the arcs, are all equal and are arranged at equal intervals. 3A is a side view of the magnetic sensor configured as described above, and FIG. 3B is a cross-sectional view taken along line BB in FIG. 3A.
尚、上述は、３相撞線構造のもので、中心軸（０−０）
を挟んで相対する２次コイルを励磁磁束に対し逆極性に
接続して１組として用い、更に１次コイルの上に２次コ
イルを捲装した場合の本発明による磁気センサーについ
て説明したが、本発明はこの例に限らず、２次コイルが
２相或いは４相以上の複数相の磁気センサーに適用でき
ることは勿論、２次コイルとしては上述の相対する２個
のコイルを１組として用いる場合に限らず、１個のコイ
ルを環状鉄心の直径上に撞装置しても良い。The above is a three-phase twisted wire structure, with the central axis (0-0)
The magnetic sensor according to the present invention has been described in which the secondary coils facing each other are connected with opposite polarity to the excitation magnetic flux and used as a set, and the secondary coil is further wound around the primary coil. The present invention is not limited to this example, and can of course be applied to a multi-phase magnetic sensor in which the secondary coil has two phases or four or more phases. However, the present invention is not limited to this, and one coil may be twisted around the diameter of the annular core.
又、本発明は、１次コイルが２次コイルの外側に配され
る型のものに適用しても、同一の効果が得られるもので
ある。Furthermore, the same effect can be obtained even when the present invention is applied to a type in which the primary coil is disposed outside the secondary coil.
尚、本発明の要旨を逸脱せずに、多くの変化・変更が、
当該業者により容易になし得ること明らかであろう。It should be noted that many changes and modifications may be made without departing from the spirit of the invention.
It will be obvious that this could be easily done by those skilled in the art.
上述した如く、本発明に於ては、環状鉄心を収納し、そ
の上に１次コイルが捲回される環状の１次コイル擾枠及
び捲枠蓋を、複数個の突起部により等間隔に分割し、こ
の分割した各部分に１次コイルを均一に捲回している。As described above, in the present invention, the annular primary coil frame and winding frame lid, which accommodates the annular core and on which the primary coil is wound, are arranged at equal intervals by a plurality of protrusions. It is divided into parts, and the primary coil is evenly wound around each divided part.
環状鉄心の全周ではなく、その等しい小部分にコイルを
均一に巻することは容易である。従って、それ等の縦続
として、環状鉄心、即ち１次コイル捲枠の全周に亘って
１次コイルを均一に撞装することができる。この為、磁
気センサーの方位誤差を減少させることができた。It is easy to uniformly wind the coil around a small portion of the annular core rather than around the entire circumference. Therefore, the primary coil can be uniformly strung around the entire circumference of the annular core, that is, the primary coil winding frame, by cascading them. Therefore, it was possible to reduce the orientation error of the magnetic sensor.
又、１次コイル組立体と２次コイル捲枠とを所定の位置
関係を以って組立てることができるので、複数個の２次
コイルを、１次コイルに対してのみならず、夫々に対し
ても正確な位置関係を以って捲回できるので、この点に
関しても磁気センサーの誤差を減少し得る。Moreover, since the primary coil assembly and the secondary coil winding frame can be assembled in a predetermined positional relationship, multiple secondary coils can be attached not only to the primary coil but also to each individual coil. Since the winding can be performed with an accurate positional relationship even when the winding is carried out, errors in the magnetic sensor can be reduced in this respect as well.
更に、両２次コイル捲枠（２１） 、 （２１’）の
環状溝（２１０）の底よりその開口端面（２２０）まで
の距離、即ち深さ２・ｈ２を、１次コイル捲枠（１２１
）の各突起部及び捲枠蓋（１２２）の対応突起部の遊端
雨間の長さｌより僅かに小となしたので、２次コイルを
両２次コイル捲枠に捲回することにより、１次コイル組
立体を両者で一層確実に支持し得る。Furthermore, the distance from the bottom of the annular groove (210) of both secondary coil winding frames (21), (21') to its open end surface (220), that is, the depth 2·h2, is
) and the corresponding protrusion of the winding frame cover (122) are made slightly smaller than the length l between the free ends of the respective protrusions of the winding frame cover (122). , the primary coil assembly can be supported more reliably by both.
第１図は本発明による磁気センサーの一実施例の分解斜
視図、第２図はそれを組立てた場合の中心軸に垂直な面
に沿った断面図、第３図Ａは同じくその組立てた場合の
側面図、第３図ＢはそのＢ−Ｂ線に沿った断面図である
。
図に於て（１）は１次コイル組立体、（２１） 、
（２１’）は２次コイル捲枠、（１１０）は環状鉄心、
（１２１）は１次コイル瞳枠、（１２２）は捲枠蓋、（
１３１）〜（１３６）は１次コイル、（１４１）〜（１
４６）。
（１４１’）〜（１４６’） 、 （２４１）〜（２
４６）及び（２４１’）〜（２４６’）は突起部、（２
１０）は環状溝、（２１１）及び（２１２）は側壁、（
２３１）〜（２３６）及び（２３１’）〜（２３６’）
は捲線収納部、（２６１）〜（２６６）は２次コイルを
夫々示す。
／ＪＪ
２１１〜；ｓｉｔ ｚ次コイル
第２図
Ａ
第３図FIG. 1 is an exploded perspective view of an embodiment of the magnetic sensor according to the present invention, FIG. 2 is a sectional view taken along a plane perpendicular to the central axis when assembled, and FIG. 3A is similarly assembled. FIG. 3B is a sectional view taken along the line B--B. In the figure, (1) is the primary coil assembly, (21),
(21') is the secondary coil winding frame, (110) is the annular core,
(121) is the primary coil pupil frame, (122) is the winding frame lid, (
131) to (136) are primary coils, (141) to (1
46). (141') ~ (146'), (241) ~ (2
46) and (241') to (246') are protrusions, (2
10) is an annular groove, (211) and (212) are side walls, (
231) to (236) and (231') to (236')
(261) to (266) represent the secondary coils, respectively. /JJ 211~;sit z-order coil Fig. 2A Fig. 3
Claims (1)
りなる２次コイルとを有する磁気センサーに於て、上記
１次コイルを上記２次捲線群と同数又はその整数倍の上
記環状鉄心と同心状の１次コイル捲枠の中心軸方向の端
面に於て該中心軸方向に突出し等間隔に配置せる仕切用
の突起部間の上記１次コイル捲枠の各部に等しい捲数を
以って捲回すると共に、上記突起部に関連し上記１次コ
イルの位置決めをなす２次コイル捲枠を設けて成ること
を特徴とする磁気センサー。In a magnetic sensor having a primary coil wound on a ring-shaped iron core and a secondary coil consisting of two or more winding groups, the primary coil has the same number of winding groups as the secondary winding group or an integral multiple of the number of winding groups. At the end face in the central axis direction of the primary coil winding frame concentric with the iron core, an equal number of turns is applied to each part of the primary coil winding frame between partition protrusions that protrude in the central axis direction and are arranged at equal intervals. A magnetic sensor characterized in that a secondary coil winding frame is provided for winding the primary coil and positioning the primary coil in relation to the protrusion.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12390685A JPS61281983A (en) | 1985-06-07 | 1985-06-07 | Magnetic sensor |
| US06/869,003 US4763072A (en) | 1985-06-07 | 1986-05-30 | Magnetic azimuth detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12390685A JPS61281983A (en) | 1985-06-07 | 1985-06-07 | Magnetic sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61281983A true JPS61281983A (en) | 1986-12-12 |
| JPH0358672B2 JPH0358672B2 (en) | 1991-09-06 |
Family
ID=14872266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12390685A Granted JPS61281983A (en) | 1985-06-07 | 1985-06-07 | Magnetic sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61281983A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63210681A (en) * | 1987-02-26 | 1988-09-01 | Tokyo Keiki Co Ltd | Magnetic sensor |
| JPH0288182U (en) * | 1988-12-23 | 1990-07-12 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421889A (en) * | 1977-07-20 | 1979-02-19 | Mitsubishi Electric Corp | Angle sensor |
| JPS57192481U (en) * | 1981-05-29 | 1982-12-06 |
-
1985
- 1985-06-07 JP JP12390685A patent/JPS61281983A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421889A (en) * | 1977-07-20 | 1979-02-19 | Mitsubishi Electric Corp | Angle sensor |
| JPS57192481U (en) * | 1981-05-29 | 1982-12-06 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63210681A (en) * | 1987-02-26 | 1988-09-01 | Tokyo Keiki Co Ltd | Magnetic sensor |
| JPH0288182U (en) * | 1988-12-23 | 1990-07-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0358672B2 (en) | 1991-09-06 |
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