JPH043485B2 - - Google Patents
Info
- Publication number
- JPH043485B2 JPH043485B2 JP57083044A JP8304482A JPH043485B2 JP H043485 B2 JPH043485 B2 JP H043485B2 JP 57083044 A JP57083044 A JP 57083044A JP 8304482 A JP8304482 A JP 8304482A JP H043485 B2 JPH043485 B2 JP H043485B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetoresistive element
- housing
- rotation sensor
- disk
- 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
- 238000001514 detection method Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000011295 pitch Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
【発明の詳細な説明】
本発明は磁気抵抗素子の感度を均一かつ高くす
ることができる磁性回転センサに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic rotation sensor in which the sensitivity of a magnetoresistive element can be made uniform and high.
所定のトラツク幅で多数の磁気パターンが着磁
された磁気媒体と磁気抵抗素子とからなり、磁気
抵抗素子の検出有効部を磁気パターンに近接して
対向配置し、互いに回転自在になるようにした磁
性回転センサは知られている。 It consists of a magnetic medium magnetized with a large number of magnetic patterns with a predetermined track width and a magnetoresistive element, and the detection effective part of the magnetoresistive element is arranged close to the magnetic patterns and facing each other so that they can rotate freely with respect to each other. Magnetic rotation sensors are known.
第１図は通常の磁性回転センサを示すもので、
ａは磁性抵抗素子１の平面図であり、１ａは検出
有効部、１ｂは取出パツド部、１ｃは接続部であ
る。また、ｂは磁気デイスクからなる磁気媒体２
の周辺部の平面図であり、平面周辺部に周方向に
沿つて等間隔に多数の磁極Ｎ，Ｓが交互に着磁さ
れている。 Figure 1 shows a normal magnetic rotation sensor.
1A is a plan view of the magnetoresistive element 1, where 1a is a detection effective part, 1b is a take-out pad part, and 1c is a connection part. In addition, b is a magnetic medium 2 consisting of a magnetic disk.
FIG. 2 is a plan view of the peripheral portion of the flat surface, in which a large number of magnetic poles N and S are alternately magnetized at equal intervals along the circumferential direction.
従来の磁性回転センサにおいては、磁気媒体と
磁気抵抗素子を機構部に組込むとき、両方の相対
位置を決めて固定すると、第１図に示すように、
ピツチP1，P2と中心ｃが一致しなかつたり、磁
極の向きと検出有効部の向きが一対しなかつたり
した状態でセツテイングされると、磁気抵抗素子
の感度が均一でなくなり、かつ低くなるという欠
点があつた。 In a conventional magnetic rotation sensor, when the magnetic medium and the magnetoresistive element are assembled into the mechanism, if the relative positions of both are determined and fixed, as shown in FIG.
If the pitches P 1 and P 2 do not match the center c, or the magnetic pole direction and the detection effective part direction do not match, the sensitivity of the magnetoresistive element will not be uniform and will become low. There was a drawback.
したがつて本発明の目的は、均一かつ高感度の
検出ができるような磁性回転センサを提供するこ
とにある。そして、本発明は磁気媒体と磁性回転
センサの機構部の間に磁気抵抗素子を固定した可
動部材（以下平板という）をもうけ、この平板を
動かすことにより、磁気媒体と磁気抵抗素子の相
対位置を調整するようにしたものである。 Therefore, an object of the present invention is to provide a magnetic rotation sensor that can perform uniform and highly sensitive detection. In addition, the present invention provides a movable member (hereinafter referred to as a flat plate) on which a magnetoresistive element is fixed between the magnetic medium and the mechanical part of the magnetic rotation sensor, and by moving this flat plate, the relative position of the magnetic medium and the magnetoresistive element can be adjusted. It was designed to be adjusted.
以下、図面を用いて本発明の実施例を詳細に説
明する。第２図は本発明による磁性回転センサの
一実施例を示し、ａは断面構造図、ｂは平面図で
ある。磁気抵抗素子１と機構部のハウジング５の
間に平板３をもうけ、磁気抵抗素子１はこの平板
３に固定されている。一方、磁気媒体２は、ハウ
ジング５に軸受６ａ，６ｂを介して回転自在に支
持されたシヤフト７の先端に固定されている。磁
気媒体２と磁気抵抗素子１の間隔を一定に保つた
後、ハウジング５上を平板３がある程度図で水平
方向に自由に動くことができるように、平板３に
はねじ４のねじ径ｄより十分大きい穴径Ｄの穴３
ａを形成してある。ハウジング５上に磁気抵抗素
子１を固定した平板３が動くことにより、磁気媒
体２と磁気抵抗素子１の中心とピツチが一致する
ように調整することができ、調整後にねじ４で平
板３をハウジング５に固定する。 Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 shows an embodiment of the magnetic rotation sensor according to the present invention, in which a is a cross-sectional structural view and b is a plan view. A flat plate 3 is provided between the magnetoresistive element 1 and the housing 5 of the mechanical part, and the magnetoresistive element 1 is fixed to this flat plate 3. On the other hand, the magnetic medium 2 is fixed to the tip of a shaft 7 rotatably supported by the housing 5 via bearings 6a and 6b. After keeping the distance between the magnetic medium 2 and the magnetoresistive element 1 constant, the flat plate 3 has a screw diameter larger than the screw diameter d of the screw 4 so that the flat plate 3 can move freely in the horizontal direction to some extent on the housing 5. Hole 3 with sufficiently large hole diameter D
A is formed. By moving the flat plate 3 on which the magnetoresistive element 1 is fixed on the housing 5, the center and pitch of the magnetic medium 2 and the magnetoresistive element 1 can be adjusted to match. After adjustment, the flat plate 3 is fixed to the housing with the screw 4. Fixed at 5.
以上のように構成することにより、磁気抵抗素
子の感度を均一かつ高感度にすることが実現可能
になり、セツテイング時による精度の低下を防ぐ
ことができ極めて優れた効果を有する。 By configuring as described above, it is possible to make the sensitivity of the magnetoresistive element uniform and high, and it is possible to prevent a decrease in accuracy due to setting, which has an extremely excellent effect.
第１図ａは通常の磁性回転センサの磁気抵抗素
子の平面図、第１図ｂは磁気媒体の部分平面図、
第２図ａは本発明に係る磁性回転センサの一実施
例の断面構造図、第２図ｂは平面図である。
１……磁気抵抗素子、２……磁気媒体、３……
平板、４……ねじ、５……ハウジング、６ａ，６
ｄ……軸受、７……シヤフト。
FIG. 1a is a plan view of a magnetoresistive element of a conventional magnetic rotation sensor, FIG. 1b is a partial plan view of a magnetic medium,
FIG. 2a is a cross-sectional structural diagram of an embodiment of the magnetic rotation sensor according to the present invention, and FIG. 2b is a plan view. 1... Magnetoresistive element, 2... Magnetic medium, 3...
Flat plate, 4...screw, 5...housing, 6a, 6
d...Bearing, 7...Shaft.
Claims (1)
ヤフト７と直結した磁気パターンが着磁された磁
気デイスク２と、シヤフトと軸受を介して結合し
た円筒状のハウジング５と、前記磁気パターンを
検出するための磁気抵抗素子１とを少なくとも有
する磁性回転センサにおいて、前記磁気抵抗素子
１は、前記ハウジングの底面と略々同等の外形を
有する中空円板３上に固定され、前記中空円板３
は前記ハウジング５の磁気デイスク２が存在する
側の底面に設置され、前記中空円板３は中心に対
して対称の位置にハウジング５へ固定するための
４ケの孔を有し、前記中空円板３を動かすことに
よつて、前記磁気抵抗素子１と前記磁気デイスク
２の前記パターンとの平行方向の位置関係が所定
の値となるように調整し、その後前記４ケの孔貫
通するネジによつて前記中空円板３と前記ハウジ
ング５とを固定することを特徴とする磁性回転セ
ンサ。1. A shaft 7 that is directly connected to the rotation axis of a rotating body, a magnetic disk 2 that is directly connected to the shaft 7 and magnetized with a magnetic pattern, a cylindrical housing 5 that is connected to the shaft via a bearing, and detects the magnetic pattern. In a magnetic rotation sensor having at least a magnetoresistive element 1 for
is installed on the bottom surface of the housing 5 on the side where the magnetic disk 2 is present, the hollow disk 3 has four holes for fixing to the housing 5 at symmetrical positions with respect to the center, and the hollow disk 3 By moving the plate 3, the parallel positional relationship between the magnetoresistive element 1 and the pattern of the magnetic disk 2 is adjusted to a predetermined value, and then the screws passing through the four holes are inserted. A magnetic rotation sensor characterized in that the hollow disc 3 and the housing 5 are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8304482A JPS58200110A (en) | 1982-05-19 | 1982-05-19 | Magnetic rotary sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8304482A JPS58200110A (en) | 1982-05-19 | 1982-05-19 | Magnetic rotary sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58200110A JPS58200110A (en) | 1983-11-21 |
| JPH043485B2 true JPH043485B2 (en) | 1992-01-23 |
Family
ID=13791198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8304482A Granted JPS58200110A (en) | 1982-05-19 | 1982-05-19 | Magnetic rotary sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58200110A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5248379A (en) * | 1975-10-15 | 1977-04-18 | Sanyo Electric Co Ltd | Speed detecting device |
-
1982
- 1982-05-19 JP JP8304482A patent/JPS58200110A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5248379A (en) * | 1975-10-15 | 1977-04-18 | Sanyo Electric Co Ltd | Speed detecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58200110A (en) | 1983-11-21 |
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