JPS5946813A - Rotary encoder - Google Patents
Rotary encoderInfo
- Publication number
- JPS5946813A JPS5946813A JP15839482A JP15839482A JPS5946813A JP S5946813 A JPS5946813 A JP S5946813A JP 15839482 A JP15839482 A JP 15839482A JP 15839482 A JP15839482 A JP 15839482A JP S5946813 A JPS5946813 A JP S5946813A
- Authority
- JP
- Japan
- Prior art keywords
- code
- light
- light emitting
- emitting element
- code plate
- 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
- 239000013307 optical fiber Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 abstract description 3
- 230000001678 irradiating effect Effects 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 238000003754 machining 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
- G01D5/26—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
- G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
- G01D5/34715—Scale reading or illumination devices
- G01D5/34723—Scale reading or illumination devices involving light-guides
Abstract
Description
【発明の詳細な説明】
このシＩ′７明はロータリーエンコーダの改良に関する
。DETAILED DESCRIPTION OF THE INVENTION This paper I'7 relates to improvements in rotary encoders.
通常ロータリーエンコーダは回転軸に符号板が固定され
、この符号板を介して発光素子および受光素子が対向し
て設けられているが、この方式は符号板を軸に対して固
定する際の芯出しや符号板の加工精度をＬげる必要があ
り、寸だ円板１・づその強度や厚みの分布に十分注意し
て力１１１１−、ないと庇、ぶれを起ずお・それがある
。と＜（二和号板のｒ１号が２進コードのようにいわゆ
る（Ｌ、のＲ１ｆ分が１〃１ｒす［１−１トまり易い符
号を金ｋＩｉ板（二設けるｔ、１′あいに１〆、１、そ
の部分の強度が不足したり、だれることがある３この発
明はこのような従来の欠点を鮪消ｌ−７よｒ）とするも
ので、以下図によってこの発明（１’）−実Ｊｉｒ！ｉ
例を説明する。Normally, a rotary encoder has a code plate fixed to the rotating shaft, and a light-emitting element and a light-receiving element are provided facing each other through the code plate. It is necessary to improve the machining accuracy of the disc 1 and the code plate, and the strength and thickness distribution of the disc 1 and base must be carefully considered, otherwise the eaves may shake. and <(The r1 number of the binary code is a binary code, so the R1f part of (L, is 1〃1r [1-1 to 1, 1. The strength of that part may be insufficient or it may sag. 3 This invention solves these conventional drawbacks. ') - Real Jir!i
Explain an example.
すなわち第１図において名１号板１（・、１、たとえば
円形または角形のプリント回路）ｉ（板２．１．１ ＋
ニフ第１・ターイオードアレイ等からなる受光素子３を
複数個たとえば１０２４個符号帯とＬ７千円形に配列す
ることにエリ構成され、この符号板はたとえばハウジン
グ４（二固定されている。なおね号帯（、」必要（一応
じ、複数本を円心円状に形成することができる。That is, in FIG. 1, the name 1 board 1 (.
It is constructed by arranging a plurality of light-receiving elements 3, for example, 1,024 light receiving elements 3 each consisting of a third electrode array, etc., in a circular pattern with a code band of L7,000. If necessary, multiple belts can be formed in a circular shape.
符号板１の」１方において省号・ｊｈの中心線１−に１
符号板１に対して相対的に回転する回ｌ１ｊｋ軸５が設
けられ、この回転用］は１１１］受６により支持されて
いる。また回転軸５にはアーム７が固定されている。1 on the center line 1- of the province name/jh on the 1 side of the code plate 1
A rotary l1jk shaft 5 is provided which rotates relative to the code plate 1 and is supported by a holder 6 for this rotation. Further, an arm 7 is fixed to the rotating shaft 5.
回転軸５のほぼ中心線上において、符号板１すなわちプ
リント回路基板２上にはたとえば発光ダイＡ−ドからな
る発光素子１０が設けられている。A light emitting element 10 consisting of, for example, a light emitting diode A is provided on the code plate 1, that is, on the printed circuit board 2, approximately on the center line of the rotating shaft 5.
アーム７（二は光ファイバ１１が１１ｙ付けられ、この
光ファイバの一端は発光素子１ｏと、寸だその他端は符
号帯を構成する受光素子３．３にそれぞれ光学的に対向
し、発光素子１０からの光を符号帯上に照射させるよう
ｆ二している。また発光素子ｌＯと光ファイバ１１との
間においてプリント回路基板２は辿光筒１２が設けられ
、発光素子１０の光はその透孔１３を通して光ファイバ
１１に導かれる。なお符号１４はバランスウェイトであ
る。An optical fiber 11 11y is attached to the arm 7 (second arm 7), one end of which optically faces the light emitting element 1o, and the other end optically faces the light receiving element 3.3 constituting the code band, and the light emitting element 10 The printed circuit board 2 is provided with a light tracing tube 12 between the light emitting element 10 and the optical fiber 11, and the light from the light emitting element 10 is transmitted through the light emitting element 10. It is guided to the optical fiber 11 through the hole 13. Reference numeral 14 is a balance weight.
第２図Ｖまアブソリュート形ロータリーエンフーダの符
号板１とデコード用変換器の配列を示すもので、各受光
素子３．３はデコーダ１５の各入力端に増幅器１６を介
して接続される。すなわち１０２４個分割のばあいには
］、 ０２４．個の受光素子、！：１０２４個のデコー
ダの入力端子とが接続される。また２進出力のばあいに
はデコーダ１５は１Ｏビツトの２進数をその出力端１７
に出力する。FIG. 2 shows the arrangement of the code plate 1 and decoding converter of an absolute type rotary enhancer, in which each light receiving element 3.3 is connected to each input terminal of a decoder 15 via an amplifier 16. In other words, in the case of 1024 divisions], 024. pieces of light-receiving elements! : Connected to the input terminals of 1024 decoders. In the case of binary output, the decoder 15 outputs a 10-bit binary number to its output terminal 17.
Output to.
なお符号コードのビット数が多くなるばあい１−は必要
に応じ光フアイバ１１０木数を第１図に示すように増加
さゼることができる。If the number of bits of the code increases, the number of optical fibers 110 can be increased as required, as shown in FIG.
この発明は」−述のように快グ（の受光素子〃・ら力る
少なくとも１ネの符号帯を円形に配した符号板を固定す
るとともに、この符号（）（トに」、・いて符号帯の中
心線上に符号板に対し、相対的１＝回転しつる回転軸を
設け、かつこの回転４１１１のほぼ中心ｆ；ＩＩに発光
素７を配置し、さらに１ＬＩＩＩ１１１１ｉ１．ｌにυ
、１一端を発光源−子Ｃ二、捷たイ１１端をねＪＩ″ｉ
イ１シ１ｆ二子−れぞわＹ（＝ ’？的に対向させた光
ファイバを設け、発光素子〃らの光を符号帯」二に照射
させるようイージーＣい／）ので、希号板と回転軸とは
機械的Ｃ二分端り、 −Ｕ ｉ、・す、し７たがって構
成が筒中で、しかも）′ｆ′、ファイバｉｔ Ｉ＋］擢
Ｍ・を有するため１ｍ組立後の？ｉ’、ｉ ’ｌ′１％
もキイ易Ｊ々／：、利点がある。This invention fixes a code plate in which at least one code band is arranged in a circle from a light receiving element of a light receiving element as described above, A rotation axis that rotates relative to the code plate is provided on the center line of the band, and the light emitting element 7 is placed approximately at the center f; II of this rotation 4111, and furthermore, υ
, 1 one end is the light emitting source C2, and the 11 end is JI''i
1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1 and 1. The rotational axis is a mechanical C bisecting end, -U i, · 7 Therefore, the configuration is in a cylinder, and it has a) 'f', fiber it I+] M ·, so it is 1 m after assembly? i', i 'l'1%
There are also advantages.
第１図はこの発明の一実施例をノｉ：−ｊ” Ｏ−カリ
−エンコーダの側断面図、第２図シ」ね−１｝板）一１
コ−ド用変換器の関係を示す平面図である。
１・・・符号板、２・・・プリント回路基板、３・・受
光素子、４・・・ハウジング、５・・・回転軸、６・・
１１Ｉ１受、７・・・アーム、１０・・・発光素子、１
１゜゛゜光フアイバ、】２・・・遮光筒、１３・・・透
孔、１４・・・ノくランスウェイト、ｌ５・・・デコー
ダ、１６・・・増幅器、１７・・・出力端。
特 許出 願 人 山武７１ネウエル株式会社代理人
弁理士 田 澤 博 昭 、。
１・゛二５
箇 １ 図
第 ２ 図FIG. 1 shows an embodiment of the present invention.
FIG. 3 is a plan view showing the relationship between code converters. DESCRIPTION OF SYMBOLS 1... Code plate, 2... Printed circuit board, 3... Light receiving element, 4... Housing, 5... Rotating shaft, 6...
11I1 receiver, 7... Arm, 10... Light emitting element, 1
1゜゛゜Optical fiber, ]2... Light-shielding tube, 13... Through hole, 14... Ranth weight, l5... Decoder, 16... Amplifier, 17... Output end. Patent application person Yamatake 71 Newel Co., Ltd. agent Patent attorney Hiroshi Tazawa. 1.25 Section 1 Figure 2
Claims (1)
（二配列した符号板を固定するとともに、この符号板り
において上記符号帯の中心線」二に、−ｈ鯖１符号板に
対し、相対的に回転しつる回転＋１１１を設け、かつこ
の回転軸のほぼ中心線−ヒに発光素子を配置し、さらに
上記回転軸に（ｄ一端を上記発光素子に、また他端を上
記符号帯上にそれぞれ〉■学的に対向させた光ファイバ
を設り、上記発光素子力・らの光を」二記符号帯上に照
射させるようｆ二したロータリーエンコーダ。At least one code band consisting of a plurality of light-receiving elements is fixed in a circular manner (two arranged code plates are fixed, and the center line of the code band in this code plate is placed at the center line of the code plate). On the other hand, a relatively rotating crane rotation +111 is provided, and a light emitting element is arranged approximately on the center line -H of this rotation axis, and further on the rotation axis (d one end is connected to the above light emitting element, and the other end is connected to the above reference numeral A rotary encoder in which optical fibers are provided on the bands, which are optically opposed to each other, and the light from the light emitting elements is irradiated onto the code bands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15839482A JPS5946813A (en) | 1982-09-10 | 1982-09-10 | Rotary encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15839482A JPS5946813A (en) | 1982-09-10 | 1982-09-10 | Rotary encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5946813A true JPS5946813A (en) | 1984-03-16 |
Family
ID=15670770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15839482A Pending JPS5946813A (en) | 1982-09-10 | 1982-09-10 | Rotary encoder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5946813A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001183122A (en) * | 1999-10-12 | 2001-07-06 | Canon Inc | Optical rotational angle detecting device, rotation detecting device, and optical rotational angle detecting method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5786056A (en) * | 1980-11-17 | 1982-05-28 | Matsushita Electric Ind Co Ltd | Revolving speed detector |
-
1982
- 1982-09-10 JP JP15839482A patent/JPS5946813A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5786056A (en) * | 1980-11-17 | 1982-05-28 | Matsushita Electric Ind Co Ltd | Revolving speed detector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001183122A (en) * | 1999-10-12 | 2001-07-06 | Canon Inc | Optical rotational angle detecting device, rotation detecting device, and optical rotational angle detecting method |
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