JPH0358672B2 - - Google Patents
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- Publication number
- JPH0358672B2 JPH0358672B2 JP60123906A JP12390685A JPH0358672B2 JP H0358672 B2 JPH0358672 B2 JP H0358672B2 JP 60123906 A JP60123906 A JP 60123906A JP 12390685 A JP12390685 A JP 12390685A JP H0358672 B2 JPH0358672 B2 JP H0358672B2
- Authority
- JP
- Japan
- Prior art keywords
- primary coil
- coil
- winding
- secondary coil
- winding frame
- 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 - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 70
- 238000000638 solvent extraction Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000005284 excitation Effects 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Measuring Magnetic Variables (AREA)
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、一点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、ほぼ鎖交磁
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、上記鉄心の或る直径方向に磁
界を印加すると、上記２次コイルの両端には、該
磁界に依つ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。
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。
Generally, this type of magnetic sensor includes a primary excitation coil that can be wound in a single point direction on an annular core;
It has a secondary coil arranged so that the magnetic flux linkage is almost zero with respect to the excitation magnetic flux generated by the primary coil. Now, if a magnetic field is applied in a certain diametrical direction of the iron core, the magnitude of the input axial component of the magnetic flux within the iron core generated by the magnetic field will be applied to both ends of the secondary coil. and a second harmonic voltage (hereinafter referred to as secondary voltage) corresponding to the direction appears.
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次コイルの捲き方の不均一は、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, uneven winding of the primary coil causes uneven excitation magnetic flux within the annular core, and the excitation magnetic field corresponding to each secondary coil becomes uneven. 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つてできるだけ均一に
捲回し、捲き上がつた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
心全周に亘つて均一な１入コイルの捲回が困難で
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つた。 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 inner or outer diameter of the wound primary coil is used as a guide to connect the coil to the second coil. A method was used in which the coil was placed in the winding frame of the secondary coil, and then the secondary coil was wound on top of it. However, with this method, it is not only difficult to wind a single coil uniformly around the entire circumference of the annular core, but also the external dimensions of the coil wound around the annular core are not accurate. There was a serious drawback that it was difficult to do.
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次捲線群と同数又は
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つて捲回す
ると共に、上記突起部を上記１次コイル捲枠の中
心軸の方向に前後から挟むことにより上記１次コ
イルの位置決めをなす１対の２次コイル捲枠を設
け、該１対の２次コイル捲枠に上記２次コイルを
捲回することにより該１対の２次コイル捲枠の内
部に上記環状鉄心上に捲回した１次コイルを収納
することにより構成される。
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 protruded in the central axis direction at an end face in the central axis direction of the primary coil winding frame concentric with the annular iron core in the same number as the secondary winding group or an integral multiple thereof. 1 above between the protrusions for partitions that can be arranged at equal intervals
A pair of coils are wound for positioning the primary coil by winding each part of the primary coil winding frame with the same number of turns and sandwiching the protrusion from the front and back in the direction of the central axis of the primary coil winding frame. A secondary coil winding frame is provided, and the secondary coil is wound around the pair of secondary coil winding frames, so that the primary coil wound on the annular core is inside the pair of secondary coil winding frames. It is constructed by housing a coil.
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１次コイルを等しい捲数を以つて捲回
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 sets of windings, a coil concentric with the annular core having the same number of windings as the secondary windings or an integral multiple thereof, At each part of the primary coil winding frame between the partition protrusions 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, the primary coil is wound with an equal number of turns or less. By winding the primary coil around the annular iron core, the primary coil is wound uniformly over the entire circumference of the annular core. On the other hand, by providing a secondary coil winding frame that positions the primary coil in relation to the protrusion, both To ensure accurate and reliable positioning.
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）に垂直な面に沿つた断面図
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。
尚、両２次コイル捲枠２１，２１′は、１次コイ
ル組立体１に関し、対称である。 FIG. 1 is an exploded perspective view of an embodiment of a magnetic sensor according to the present invention, and FIG. 2 is a sectional view taken along a plane perpendicular to the central axis (0-0) in an assembled state. In the figure, 1 indicates the annular primary coil assembly of the magnetic sensor as a whole;
Reference numerals 21 and 21' respectively indicate cylindrical secondary coil winding frames that accommodate and hold the primary coil assembly 1 therebetween.
Note that both the secondary coil winding frames 21 and 21' are symmetrical with respect to the primary coil assembly 1.
１次コイル組立体１の環状鉄心１１０は、断面
コ次状の環状の１次コイル捲枠１２１内に納めら
れる。この１次コイル捲枠１２１は、その円周上
に等間隔を以つて、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一寸法且つ
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つて、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一
寸法且つ同一形状の６個の突起部１４１′……１
４６′を有する。捲枠蓋１２２は、その突起部１
４１′……１４６′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次コイル捲枠１２１に取付けられ
る。１次コイル１３１……１３６は、上述を如く
一体となされた１次コイル捲枠１２１及び捲枠蓋
１２２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 circular cross section. This primary coil winding frame 121 has a plurality of pieces having the same size and the same shape, parallel to the central axis (0-0) and protruding to the right in FIG. 1, at equal intervals on its circumference. For example, six protrusions 141...
...146. On the other hand, the winding frame lid 122 of the primary winding frame 121 has an annular shape similar to the former, and is parallel to the central axis (0-0) at equal intervals on its circumference, as shown in FIG. Six protrusions 141', each having the same size and shape, protrude to the left side.
46'. The winding frame lid 122 has its protrusion 1
They are attached to the primary coil winding frame 121 so that the protrusions 141...146' of the primary coil winding frame 121 coincide with each other on the same circumference. The primary coils 131...136 are mounted on the primary coil winding frame 121 and the winding frame lid 122, which are integrated as described above, in a portion between the pair of protrusions thereof.
Each coil is wound in the same direction with the same number of turns to form the primary coil assembly 1.
両２次コイル捲枠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１を収納する際は、１次コイル組立体１
の突起部１４１……１４６及び１４１′……１４
６′の円弧部が、両捲枠２１，２１′の環状溝２１
０の側壁２１１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２１２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ても良い。
又、各環状溝２１０の深さh1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l1及びl2（ただしl1＝l2）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２２０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１２
２に設けられた対をなす突起部１４１……１４６
及び１４１′……１４６′を軸（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次コイル捲枠１２
１及び捲枠蓋１２２に設けられた突起部１４１…
…１４６及び１４１′……１４６′の中心が、２次
コイル捲枠２１，２１′に夫々設けた突起部１４
１……１４６及び１４１′……１４６′と同数の２
次コイルの仕切用の突起部２４１……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′に各々等しい捲数
を以つて捲回され（第３図参照）、相対する組の
２次コイル２６１，２６４；２６２，２６５及び
２６３，２６６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２３１……２３６及び２３１′……２３６′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線に沿つた断面図である。 Both secondary coil winding frames 21 and 21' have concentric annular grooves 210 at their bottoms, and when storing the primary coil assembly 1, the primary coil assembly 1
Projections 141...146 and 141'...14
The circular arc portion 6' is the annular groove 21 of both winding frames 21, 21'.
The diameters of the side walls 211 and 212 of the annular groove 210 are selected such that they abut at least one of the side walls 211 and 212 of the annular groove 210, respectively. Incidentally, at this time, there is no particular need to provide side walls that do not face each other.
Also, the depth h1 of each annular groove 210 and the center axis (0-0) from the primary coil winding frame 121 and winding frame cover 122
The lengths l 1 and l 2 (however, l 1 = l 2 ) of each of the protrusions 141...146 and 141'...146' that protrude in the direction of the central axis (0-0) are 1 It is selected to be larger than the thickness of the secondary coil 1 in consideration of the diameter of the conductive wire and the number of layers of the coil. Further, the depth h2 from the open end surface 220 of each of the secondary coil winding frames 21 and 21' to the bottom of the annular groove 210 provided in each of the primary coil winding frames 121 and the winding frame lid 12 is
Paired protrusions 141...146 provided on 2
and 141'...146' are selected to be slightly smaller than half of the distance l between both end faces in the axis (0-0) direction. In order to assemble the primary coil assembly 1 into the secondary coil winding frames 21 and 21', the primary coil winding frame 12
1 and the protrusion 141 provided on the winding frame lid 122...
...146 and 141'...The centers of 146' are the projections 14 provided on the secondary coil winding frames 21 and 21', respectively.
1...146 and 141'...2 the same number as 146'
The centers of the partitioning protrusions 241...246 and 241'...246' of the next coil should coincide with each other. On the other hand, the secondary coils 261 . . . 266 are stored in winding storage portions 231 .
236 and 231'...236' are each wound with the same number of turns (see Fig. 3), and the opposing sets of secondary coils 261, 264; 262, 265 and 263, 266 are Three sets of secondary coils are connected in a star or delta configuration, with each set having opposite polarity. The lengths on the circumferences of the winding frames 21, 21' of the winding storage portions 231...236 and 231'...236' of the secondary coils, that is, the lengths of the arcs, are all equal and spaced at equal intervals. It is arranged so that it crosses over. 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相捲線構造のもので、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次コイルを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捲装しても良
い。 The above is a three-phase winding structure, in which the secondary coils facing each other across the central axis (0-0) are connected with opposite polarity to the excitation magnetic flux and used as a set, and the upper Although the magnetic sensor according to the present invention has been described in which the secondary coil is wound around the secondary coil, the present invention is not limited to this example, and it goes without saying that the present invention can be applied to a magnetic sensor with a secondary coil of two phases or multiple phases of four or more phases. , the above-mentioned opposing two coils are used as the secondary coils.
It is not limited to the case where 1 coil is used as a set.
A number of coils may be wound 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。 Note that many changes and changes may be made without departing from the gist of the invention.
It will be obvious that modifications may be readily made 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
次コイル捲枠及び捲枠蓋を、複数個の突起部によ
り当間隔に分割し、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。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。従つて、それ等の継続とし
て、環状鉄心、即ち１次コイル捲枠の全周に亘つ
て１次コイルを均一に捲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。
As mentioned above, in the present invention, an annular iron core is housed and a primary coil is wound on the annular core.
The secondary coil winding frame and the winding frame lid are divided into equal intervals by a plurality of protrusions, and the primary coil is evenly wound around each of the divided parts. It is easy to uniformly wind the coil around a small portion of the annular core rather than around the entire circumference. Therefore, as a continuation of these, the primary coil can be wound uniformly over the entire circumference of the annular core, that is, the primary coil winding frame. 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
定の位置関係を以つ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
以つて捲回できるので、この点に関しても磁気セ
ンサーの誤差を減少し得る。 Furthermore, 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両関
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, since the depth 2·h2 is made slightly smaller than the length l of the free ends of each protrusion of the primary coil winding frame 121 and the corresponding protrusion of the winding frame cover 122, the secondary coil is By winding the secondary coil around the winding frame, the primary coil assembly can be more reliably supported 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つた断面図、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線に沿つた断面図である。
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次コイル捲枠、１２２は捲枠蓋、１３１〜１３
６は１次コイル、１４１〜１４６，１４１′〜１
４６′，２４１〜２４６及び２４１′〜２４６′は
突起部、２１０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。
Fig. 1 is an exploded perspective view of one 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 it is assembled, and Fig. 3A is the same when it is assembled. The side view of Figure 3B is that B.
- It is a sectional view along the B line. In the figure, 1 is the primary coil assembly, 21, 21'
1 is a secondary coil winding frame, 110 is an annular core, 121 is a primary coil winding frame, 122 is a winding frame lid, 131 to 13
6 is the primary coil, 141-146, 141'-1
46', 241-246 and 241'-246' are projections, 210 is an annular groove, 211 and 212 are side walls, 231-236 and 231'-236' are winding storage parts, and 261-266 are secondary coils, respectively. show.
Claims (1)
の捲線群よりなる２次コイルとを有する磁気セン
サーにおいて、 上記環状鉄心を覆うように環状の１次コイル捲
枠を設け、該１次コイル捲枠の外面に等間隔に該
１次コイル捲枠の中心軸の方向に突出するように
上記２次コイルの捲線群と同数又はその整数倍の
仕切り用の突起部を設け、該突起部の間にそれぞ
れ等しい捲数をもつて上記１次コイルを捲回する
と共に、 上記突起部を上記１次コイル捲枠の中心軸の方
向に前後から挟むことにより上記１次コイルの位
置決めをな１対の２次コイル捲枠を設け、 該１対の２次コイル捲枠に上記２次コイルを捲
回することにより該１対の２次コイル捲枠の内部
に上記１次コイル捲枠上に捲回した１次コイルを
収納するようにしたことを特徴とする磁気センサ
ー。[Scope of Claims] 1. In a magnetic sensor having a primary coil wound on an annular core and a secondary coil consisting of two or more winding groups, an annular primary coil winding frame is provided to cover the annular core. partitioning protrusions of the same number as the winding group of the secondary coil or an integral multiple thereof so as to protrude in the direction of the central axis of the primary coil winding frame at equal intervals on the outer surface of the primary coil winding frame. The primary coil is wound between the protrusions with an equal number of turns, and the protrusions are sandwiched from the front and back in the direction of the central axis of the primary coil winding frame. A pair of secondary coil winding frames is provided to determine the position of the coil, and the above-mentioned secondary coil is wound inside the pair of secondary coil winding frames by winding the secondary coil around the pair of secondary coil winding frames. A magnetic sensor characterized in that a primary coil wound on a secondary coil winding frame is housed.
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 JPS61281983A (en) | 1986-12-12 |
| JPH0358672B2 true 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) |
Families Citing this family (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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421889A (en) * | 1977-07-20 | 1979-02-19 | Mitsubishi Electric Corp | Angle sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57192481U (en) * | 1981-05-29 | 1982-12-06 |
-
1985
- 1985-06-07 JP JP12390685A patent/JPS61281983A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5421889A (en) * | 1977-07-20 | 1979-02-19 | Mitsubishi Electric Corp | Angle sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61281983A (en) | 1986-12-12 |
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