JPS5937443B2 - How to position the fixed slit plate of a rotary encoder - Google Patents
How to position the fixed slit plate of a rotary encoderInfo
- Publication number
- JPS5937443B2 JPS5937443B2 JP2473481A JP2473481A JPS5937443B2 JP S5937443 B2 JPS5937443 B2 JP S5937443B2 JP 2473481 A JP2473481 A JP 2473481A JP 2473481 A JP2473481 A JP 2473481A JP S5937443 B2 JPS5937443 B2 JP S5937443B2
- Authority
- JP
- Japan
- Prior art keywords
- slit plate
- fixed slit
- rotary encoder
- jig
- fixed
- 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
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
- G01D5/26—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/3473—Circular or rotary encoders
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Optical Transform (AREA)
Description
【発明の詳細な説明】
この発明は、被検知体の回転角や回転数、あるいは直線
的な変位を検知する光電式ロータリエンコーダの固定ス
リット板の位置決め方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for positioning a fixed slit plate of a photoelectric rotary encoder that detects the rotational angle, rotational speed, or linear displacement of a detected object.
この種のロータリエンコーダは、投光素子と受 。This type of rotary encoder has a light emitter and a receiver.
光素子の間に、本体に固定される固定スリット板と、回
転軸に取付けられた回転スリット板とを有するが、回転
軸と固定スリット板との間に偏心があると、位相差等の
出力特性に変動が生じるので、偏心量を極力少なくする
必要がある。従来、この対策として第１図に示すように
、本体１に設けられた回転軸２に治具３を差し込み、こ
の治具３の外周に固定スリット板４の内周を当接させて
、固定スリット板Ａを位置決めする方法がとられていた
。There is a fixed slit plate fixed to the main body and a rotating slit plate attached to the rotating shaft between the optical elements, but if there is eccentricity between the rotating shaft and the fixed slit plate, output such as phase difference may occur. Since variations occur in the characteristics, it is necessary to minimize the amount of eccentricity. Conventionally, as a countermeasure against this problem, as shown in FIG. A method was used to position the slit plate A.
しかしながら、この方法によると、治具３と固定スリッ
ト板４とを完全に密着させることが難しく、位置決めす
るごとに特性にばらつきが生じるおそれがあつた。However, according to this method, it is difficult to bring the jig 3 and the fixed slit plate 4 into complete contact with each other, and there is a risk that the characteristics will vary each time the positioning is performed.
この発明はこのような欠点を除去し、簡単に治具と固定
スリット板との良好な密着状態が得られ、特性にばらつ
きが生じないロータリエンコーダの固定スリット板の位
置決め方法を提供することを目的としている。The purpose of the present invention is to eliminate such drawbacks, and to provide a method for positioning a fixed slit plate of a rotary encoder, in which good adhesion between the jig and the fixed slit plate can be easily obtained, and variations in characteristics do not occur. It is said that
以下、この発明の実施例を図面にもとづいて説明する。Embodiments of the present invention will be described below based on the drawings.
第２図、第３図において、第１図と同一符号は同一部分
を示すが、固定スリット板４は、たとえばステンレスや
ニッケル等の磁性材で形成してある。また、治具３も同
様に磁性材で形成され、永久磁石５を着脱自在に吸着さ
せることにより磁化状態に保たれている。固定スリット
板４を位置決めするには、固定スリット板４の内周を治
具３の外周に磁気吸着力を利用して密着させ、本体１に
固定する。In FIGS. 2 and 3, the same reference numerals as in FIG. 1 indicate the same parts, and the fixed slit plate 4 is made of a magnetic material such as stainless steel or nickel. Further, the jig 3 is similarly made of a magnetic material, and is maintained in a magnetized state by detachably attracting a permanent magnet 5. To position the fixed slit plate 4, the inner periphery of the fixed slit plate 4 is brought into close contact with the outer periphery of the jig 3 using magnetic adsorption force, and the fixed slit plate 4 is fixed to the main body 1.
治具３をはずすときは、永久磁石５をとり除けば簡単に
とりはずすことができる。第４図、第５図はこの発明の
他の実施例を示し治具３の内周に固定スリット板４の外
周を上記と同様磁気吸着させて、固定スリット板４の位
置決めを行なうものである。When removing the jig 3, it can be easily removed by removing the permanent magnet 5. FIGS. 4 and 5 show another embodiment of the present invention, in which the outer periphery of the fixed slit plate 4 is magnetically attracted to the inner periphery of the jig 3 in the same manner as described above to position the fixed slit plate 4. .
なお、上述の各実施例においては、治具３を磁化する手
段として永久磁石５を用いた場合を示した力ゝ永久磁石
の代わりに電磁石を用いてもよい。In addition, in each of the above-mentioned embodiments, an electromagnet may be used in place of the permanent magnet shown in which the permanent magnet 5 is used as a means for magnetizing the jig 3.
以上述べたことかられかるように、この発明によれば、
固定スリツト板を治具に磁気的に吸着させるようにした
ので、きわめて簡単に両者の良好な密着状態を確保する
ことが可能となり、特性にばらつきが生じないという実
用的効果が得られる。As can be seen from the above, according to this invention,
Since the fixed slit plate is magnetically attracted to the jig, it is possible to very easily ensure good adhesion between the two, and a practical effect of not causing variations in characteristics can be obtained.
第１図は従来の固定スリツト板の固定方法を説明するた
めの正面図、第２図はこの発明による固定スリツト板の
固定方法の実施例を説明するための正面図、第３図は同
側面断面図、第４図はこの発明による固定スリット板の
固定方法の他の実施例を説明するための正面図、第５図
は同側面断面図である。
１・・・本体、２・・・回転軸、３・・・治具、４・・
・固定スリット板、５・・・永久磁石。Fig. 1 is a front view for explaining a conventional method of fixing a fixed slit plate, Fig. 2 is a front view for explaining an embodiment of the method for fixing a fixed slit plate according to the present invention, and Fig. 3 is the same side view. 4 is a front view for explaining another embodiment of the method of fixing a fixed slit plate according to the present invention, and FIG. 5 is a side sectional view of the same. 1... Main body, 2... Rotating shaft, 3... Jig, 4...
・Fixed slit plate, 5...Permanent magnet.
Claims (1)
転軸に取付けられた回転スリット板とを有するロータリ
ーエンコーダの固定スリット板の位置決め方法であつて
、前記回転軸に固定スリット板の取付け位置を規制する
ための磁性体からなる治具を装着し、この治具を磁化し
た状態で、磁性体からなる前記固定スリット板を治具に
磁気的に吸着させて位置決めすることを特徴とするロー
タリーエンコーダの固定スリット板の位置決め方法。1. A method for positioning a fixed slit plate of a rotary encoder having a fixed slit plate and a rotating slit plate attached to a rotating shaft between a light emitting element and a light receiving element, the method comprising: attaching the fixed slit plate to the rotating shaft. A jig made of a magnetic material for regulating the position is attached, and with this jig magnetized, the fixed slit plate made of the magnetic material is magnetically attracted to the jig for positioning. How to position the fixed slit plate of a rotary encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2473481A JPS5937443B2 (en) | 1981-02-20 | 1981-02-20 | How to position the fixed slit plate of a rotary encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2473481A JPS5937443B2 (en) | 1981-02-20 | 1981-02-20 | How to position the fixed slit plate of a rotary encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57137813A JPS57137813A (en) | 1982-08-25 |
| JPS5937443B2 true JPS5937443B2 (en) | 1984-09-10 |
Family
ID=12146369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2473481A Expired JPS5937443B2 (en) | 1981-02-20 | 1981-02-20 | How to position the fixed slit plate of a rotary encoder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5937443B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0625673B2 (en) * | 1986-11-27 | 1994-04-06 | フアナツク株式会社 | Motor built-in type pulse encoder mounting method |
| US6516509B1 (en) * | 1996-06-07 | 2003-02-11 | Canon Kabushiki Kaisha | Method of manufacturing a liquid jet head having a plurality of movable members |
-
1981
- 1981-02-20 JP JP2473481A patent/JPS5937443B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57137813A (en) | 1982-08-25 |
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