JPS6082807A - Detecting device for rotary encoder - Google Patents
Detecting device for rotary encoderInfo
- Publication number
- JPS6082807A JPS6082807A JP58191776A JP19177683A JPS6082807A JP S6082807 A JPS6082807 A JP S6082807A JP 58191776 A JP58191776 A JP 58191776A JP 19177683 A JP19177683 A JP 19177683A JP S6082807 A JPS6082807 A JP S6082807A
- Authority
- JP
- Japan
- Prior art keywords
- scale
- rotary
- detection
- rotary encoder
- rotary scale
- 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.)
- Pending
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はロータリエンコーダに係り、とくに高分解能
で小型化されたロータリエンコーダの検出装置の改良に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary encoder, and more particularly to an improvement in a high-resolution, compact rotary encoder detection device.
従来のロータリエンコータ′の検出装置の一例ヲ第１図
に示す。An example of a conventional detection device for a rotary encoder is shown in FIG.
第１図において、１は回転軸５の軸端に固定された円板
状の回転スケールで、その外周面上には光学的に明・暗
の連続しプこ検出用スリット１２１が施こさルている。In FIG. 1, reference numeral 1 denotes a disc-shaped rotary scale fixed to the end of the rotary shaft 5, and an optically continuous bright and dark slit 121 for detection is provided on the outer peripheral surface of the scale. ing.
１０は回転軸５、すなわち回転スケール１の回転変化量
を検出する検出部で、この回転スケール１Ｖｃ対接配置
で、位相差の異なるスリン） １ｉａ、１１ｂを施こさ
れた固定スケール１１と、発光素子１２と、受光素子１
６とより構成されている。Reference numeral 10 denotes a detection unit that detects the amount of rotational change of the rotational axis 5, that is, the rotational scale 1. This rotational scale 1Vc is placed in opposition to the fixed scale 11 having different phase differences (Srin) 1ia, 11b, and a light emitting unit. element 12 and light receiving element 1
6.
ところで、このように円板の外周面上に施こされる検出
用スリンＨａ、ＩＩａ、１１０は第２図シこ示されるよ
うに（誇張して図示されている）放射状に形成されるた
め、スリットの内端寸法１）は外端−・１法ａより小さ
くなる。寸法Ｃは検出部の大きさＶこ対応した寸法とな
る。一般にロークリエンコーダの分解能はスリット数で
表わさｉｔ、回転スケール１の外径寸法が同一の場合ス
リット１＋ （ｉ／、！； Ｘ＋あるいは寸法ｂ）が小
さい程スリット数が多（７’：ｃ リ、高分解能となる
。しかしながら、製造技術トのａｌｌ限によりスリット
巾のＸＪ法には限界があり、・１／）、１）のＪ５が先
にｊｌ！’！限されるのて、・１広；＋ ＆−ｊ、ＩＩ
！’ｊ １Ｍ史・）ｌノ、まで余裕があることになる。By the way, since the detection sulins Ha, IIa, 110 applied on the outer circumferential surface of the disk are formed radially as shown in FIG. 2 (exaggerated), The inner end dimension 1) of the slit is smaller than the outer end -1 dimension a. The dimension C corresponds to the size V of the detection section. In general, the resolution of a low-resolution encoder is expressed by the number of slits.If the outer diameter of the rotary scale 1 is the same, the smaller the slit 1+ (i/,!; , high resolution is obtained.However, there are limits to the XJ method for slit width due to all limitations of manufacturing technology. '! Limited, ・1 wide; + &-j, II
! 'j 1M History・)lノ, there is plenty of room.
つまり、回転スケール１の外径寸法を最大限有効利用（
−でいないことになり、高分解能にした場合、形状の小
等化には支障となっていた。In other words, the outer diameter of rotary scale 1 can be used as effectively as possible (
-, and when high resolution is used, it becomes a problem for small equalization of the shape.
本発明は、係る上記の欠点を除去したロークリエンコー
ダの検出装置の提供を目的としたもので、その要旨とす
るところは前掲の特許請求の範囲に記載した通りである
。The present invention aims to provide a detection device for a low-resolution encoder that eliminates the above-mentioned drawbacks, and the gist thereof is as set forth in the claims above.
つぎに、この発明の好適なる実施例を以下図面にもとづ
いて詳細に説明する。Next, preferred embodiments of the present invention will be described in detail based on the drawings.
第ろ図は本発明の一実施例、つまり反射形の光電センサ
の例であって２０はドラム状の回転スケールでその内面
には検出用スリンｔ・２０ａが等間隔に形成されている
。ろ０は検出部で、固定スケール６１、発光素子６２、
受光素子ろろより構成されており、この検出部ろ０は回
転スケール２０の内側に実装さノ１．ている。符号４Ｄ
は回転軸で、第４図に示すように回転スケール２０のハ
ブ２０１）に圧入あるいは接着などによ１ノ固定されて
いる。Figure 7 shows one embodiment of the present invention, that is, an example of a reflective photoelectric sensor, in which 20 is a drum-shaped rotating scale, and detection slints t.20a are formed at equal intervals on the inner surface of the scale. 0 is a detection section, which includes a fixed scale 61, a light emitting element 62,
It consists of a light-receiving element 0, and this detection part 0 is mounted inside the rotary scale 20. ing. code 4D
is a rotating shaft, and as shown in FIG. 4, it is fixed to the hub 201 of the rotating scale 20 by press-fitting or gluing.
このように、回転スケール２０はドラム状に形成されて
いるので検出用スリン） ２０ａは第５図のようにスリ
ット内端寸法１〕および外端寸法ａを等しくすることが
でき、スリット巾は製造技術上の限界の寸法に設定□す
ることが可能とｆ［る。そして検出部ろＯである固定ス
ケールろ１、発光素子ろ２、受光素子ろろが、回転スケ
ール２０の内側に実装される為、回転スケール２０の外
径寸法はロータリエンコーダの外径寸法よりわずかに小
さくてすむことになる。In this way, since the rotary scale 20 is formed into a drum shape, the detection slit 20a can have the slit inner end dimension 1] and outer end dimension a equal to each other as shown in FIG. It is possible to set the dimensions to the technical limit. Since the fixed scale roller 1, the light emitting element roller 2, and the light receiving element roller, which are the detection section O, are mounted inside the rotating scale 20, the outer diameter of the rotating scale 20 is slightly smaller than the outer diameter of the rotary encoder. This means that it can be made smaller.
つまり、回転スケール２０のスリット数はロークリエン
コーダの外径寸法を最大限自効利用して℃・る、−とに
なる。In other words, the number of slits in the rotary scale 20 is determined to be .degree. C..multidot.-- by making the most of the outer diameter of the rotary encoder.
以上詳、！１１に説明した如く本発明よりなる検出装置
は、ドラム状の回転スケールの内面に検出用スリットを
形成して、この回転スケールの内側に検出部を設けると
いう構造であるので、ロークリエンコーダの外径寸法を
最大限子ｆ効（１１川してスリットを形成できるので、
高分−解能にした場合の小型化には効果が極めて大きい
。More details! As explained in Section 11, the detection device according to the present invention has a structure in which a detection slit is formed on the inner surface of a drum-shaped rotating scale and a detection section is provided inside this rotating scale. Since the slit can be formed by adjusting the diameter to the maximum effect (11 degrees),
High resolution has an extremely large effect on miniaturization.
なお、上記実施例では、反射形の九ｌｌＬ七ンリて説明
したが、磁気センサ又は静電センサで実施しても良いこ
とはいうまでもない。In the above embodiments, a reflective type sensor is used, but it goes without saying that a magnetic sensor or an electrostatic sensor may be used.
第１図は従来のロータリエンコーダの検出装置を示す概
略斜視図、第２図は従来の回転スケールにおける検出用
スフリットの部分平面図、第６図は本発明よりなるロー
クリエンコーダの検出装置を示す斜視図、第４図は第６
図における回転スケールと回転軸との結合状態を示す断
面図、第５図は第ろ図における回転スケールの検出用ス
リット部分の部分展開図である。
１．２０ 回転スケール、５．４０・回転軸、１０．３
０・・検出部、１ａ、２０ａ ・検出用スリット、ａ・
スリット内端寸法、１） スリット内端寸法。
′−０．−５−ｔツノ
−／FIG. 1 is a schematic perspective view showing a conventional rotary encoder detection device, FIG. 2 is a partial plan view of a detection sprit in a conventional rotary scale, and FIG. 6 is a rotary encoder detection device according to the present invention. Perspective view, Figure 4 is Figure 6
FIG. 5 is a cross-sectional view showing the coupling state of the rotary scale and the rotary shaft in the figure, and FIG. 5 is a partially developed view of the detection slit portion of the rotary scale in the figure. 1.20 Rotation scale, 5.40・Rotation axis, 10.3
0...Detection section, 1a, 20a ・Detection slit, a・
Slit inner end dimension, 1) Slit inner end dimension. '-0. -5-thorn-/
Claims (1)
有する回転スケールと、前記回転軸の回転変化量を検出
する検出部よりなるロータリエンコーダにおいて、前記
回転スケールは内周面に検出用スリットを有したドラム
形状であり、かつ前記検出部は前記ドラム状の回転スケ
ールの内側に設置さノしていることを特徴とするロータ
リエンコーダの検出装置。A rotary encoder comprising a rotary scale having a detection slit attached to the rotary shaft, and a detection section for detecting a rotational change amount of the rotary shaft, the rotary scale having a detection slit on an inner circumferential surface. 1. A detection device for a rotary encoder, wherein the detection device has a drum shape, and the detection section is installed inside the drum-shaped rotating scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58191776A JPS6082807A (en) | 1983-10-13 | 1983-10-13 | Detecting device for rotary encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58191776A JPS6082807A (en) | 1983-10-13 | 1983-10-13 | Detecting device for rotary encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6082807A true JPS6082807A (en) | 1985-05-11 |
Family
ID=16280340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58191776A Pending JPS6082807A (en) | 1983-10-13 | 1983-10-13 | Detecting device for rotary encoder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6082807A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH078428A (en) * | 1993-06-08 | 1995-01-13 | Samsung Electron Co Ltd | Robot vacuum cleaner |
| EP1517119A1 (en) * | 2003-09-22 | 2005-03-23 | Xitact S.A. | Optical device for determining the longitudinal and angular position of a rotationally symmetrical apparatus |
-
1983
- 1983-10-13 JP JP58191776A patent/JPS6082807A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH078428A (en) * | 1993-06-08 | 1995-01-13 | Samsung Electron Co Ltd | Robot vacuum cleaner |
| EP1517119A1 (en) * | 2003-09-22 | 2005-03-23 | Xitact S.A. | Optical device for determining the longitudinal and angular position of a rotationally symmetrical apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4540223A (en) | Positive electrical connecting mechanism | |
| JP3512160B2 (en) | Wave gear device with torque detection mechanism | |
| US4788422A (en) | High resolution rotary encoder having appositely rotating disks | |
| JPS6082807A (en) | Detecting device for rotary encoder | |
| CN219301649U (en) | Optical rotating shaft device and modularized packaging structure thereof | |
| JP2535171Y2 (en) | Rotary encoder | |
| JP3343466B2 (en) | Rotary differential transformer | |
| CN219511561U (en) | Novel optical rotating shaft device and modularized packaging structure thereof | |
| JPH0355855Y2 (en) | ||
| JP2002303357A (en) | Toroidal type continuously variable transmission | |
| JPH022376B2 (en) | ||
| JPH06174027A (en) | Planetary roller type power transmission device | |
| JPH03113867A (en) | Optical disk device | |
| JPH0932958A (en) | Rotary encoder | |
| JPH0257651B2 (en) | ||
| JP3485133B2 (en) | Method of manufacturing disk with slit for angular acceleration sensor | |
| JPS6347950B2 (en) | ||
| JPS63187119A (en) | Optical rotary encoder | |
| JPS61256223A (en) | rotary encoder | |
| JP2570514Y2 (en) | Optical rotational displacement detector | |
| JPH10267692A (en) | Optical encoder | |
| JPS61167815A (en) | Optical rotary encoder | |
| JPS5972053U (en) | Signal transmission device for rotating parts | |
| JPS61161949A (en) | Motor | |
| JPS62191716A (en) | Tacho encoder |