JP2001289668A - Encoder device - Google Patents
Encoder deviceInfo
- Publication number
- JP2001289668A JP2001289668A JP2000104467A JP2000104467A JP2001289668A JP 2001289668 A JP2001289668 A JP 2001289668A JP 2000104467 A JP2000104467 A JP 2000104467A JP 2000104467 A JP2000104467 A JP 2000104467A JP 2001289668 A JP2001289668 A JP 2001289668A
- Authority
- JP
- Japan
- Prior art keywords
- code plate
- bearing
- encoder device
- mounting body
- rotating shaft
- 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.)
- Granted
Links
Landscapes
- Optical Transform (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、エンコーダ装置に
関し、特に、回転符号板を取付けるキャップ状の取付体
を回転軸の端部に螺合し、軸受から漏れ出たグリス等の
油性物質をねじ部を介して取付体と前記端部及びこの端
部の端面との間の隙間に逃がし、回転符号板への油性物
質の付着を防止するための新規な改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an encoder device, and more particularly, to a cap-like mounting member for mounting a rotation code plate, which is screwed to an end of a rotary shaft, and which is used to screw grease or other oily substance leaking from a bearing. The present invention relates to a novel improvement for preventing the oily substance from adhering to the rotating code plate by being released to a gap between the mounting body and the end portion and the end face of the end portion via a portion.
【０００２】[0002]
【従来の技術】従来、用いられていたこの種のエンコー
ダ装置としては、一般に図３及び図４で示される構成を
挙げることができる。すなわち、図３及び図４において
符号１で示されるものは基台であり、この基台１には軸
受２を介して中空部３ａを有する回転軸３が回転自在に
設けられている。前記回転軸３には、筒状の取付体４を
介して回転符号パターンを有する回転符号板５が回転軸
３と共に回転するように設けられている。2. Description of the Related Art Conventionally, as this type of encoder device, a configuration shown in FIGS. 3 and 4 can be generally used. That is, what is indicated by reference numeral 1 in FIGS. 3 and 4 is a base, on which a rotating shaft 3 having a hollow portion 3 a is rotatably provided via a bearing 2. The rotary shaft 3 is provided with a rotary code plate 5 having a rotary code pattern via a cylindrical mounting body 4 so as to rotate together with the rotary shaft 3.
【０００３】前記基台１上には受光体６を有する基板７
が設けられ、この基板７は回転符号板５と軸受２との間
に位置している。前記回転符号板５の外側位置にはＬＥ
Ｄ等からなる光源８が設けられ、この光源８からの光は
回転符号板４のパターンを通過して受光体６で受光され
ると共に、前記光源８と受光体６とは回転符号板５を挟
むように互いに対向して配設されている。従って、回転
軸３と共に回転する回転符号板５のパターンすなわちス
リットを光源からの光が通過して受光体６で受光される
ことにより、エンコーダ信号が受光体６から出力され
る。A substrate 7 having a photoreceptor 6 is provided on the base 1.
The substrate 7 is located between the rotation code plate 5 and the bearing 2. LE on the outside of the rotation code plate 5
A light source 8 made of D or the like is provided. The light from the light source 8 passes through the pattern of the rotary code plate 4 and is received by the light receiving body 6, and the light source 8 and the light receiving body 6 They are arranged facing each other so as to sandwich them. Therefore, the light from the light source passes through the pattern of the rotary code plate 5 that rotates together with the rotating shaft 3, that is, the slit, and is received by the light receiving body 6, so that an encoder signal is output from the light receiving body 6.
【０００４】[0004]
【発明が解決しようとする課題】従来のエンコーダ装置
は、以上のように構成されていたため、次のような課題
が存在していた。すなわち、軸受内に設けられているグ
リス等の油性物質が軸受の内輪と外輪間の隙間から取付
体の内側を経て矢印Ａのように取付体と回転軸との間を
経て回転符号板のパターン側及び裏面側に付着し、光源
からの透過光に悪影響を与え、エンコーダ信号の精度に
影響が及ぶことになっていた。Since the conventional encoder device is configured as described above, there are the following problems. That is, the oily substance such as grease provided in the bearing passes through the gap between the inner ring and the outer ring of the bearing, passes through the inside of the mounting body, passes between the mounting body and the rotating shaft as shown by an arrow A, and forms a pattern of the rotation code plate. It adheres to the side and the back side, adversely affects the transmitted light from the light source, and affects the accuracy of the encoder signal.
【０００５】本発明は、以上のような課題を解決するた
めになされたもので、特に、回転符号板を取付けるキャ
ップ状の取付体を回転軸の端部に螺合し、軸受から漏れ
出たグリス等の油性物質をねじ部を介して取付体と前記
端部及びこの端部の端面との間の隙間に逃がし、回転符
号板への油性物質の付着を防止するようにしたエンコー
ダ装置を提供することを目的とする。The present invention has been made to solve the above problems, and in particular, a cap-like mounting body for mounting a rotation code plate is screwed into an end of a rotating shaft and leaks from a bearing. Provided is an encoder device in which an oily substance such as grease is released into a gap between a mounting body, the end portion, and an end face of the end portion via a screw portion to prevent the oily substance from attaching to a rotation code plate. The purpose is to do.
【０００６】[0006]
【課題を解決するための手段】本発明によるエンコーダ
装置は、基台に軸受を介して回転自在に設けられた回転
軸に取付体を介して回転符号板を設け、前記回転符号板
を挟むように光源と受光体が対向して設けられたエンコ
ーダ装置において、前記取付体はキャップ状をなすと共
に、ねじ部を介して前記回転軸の端部に螺合され、前記
軸受から漏れた油性物質は前記ねじ部を経て前記取付体
と前記端部及びこの端部の端面との間の隙間に案内され
るようにした構成であり、また、前記回転軸は筒状をな
し、前記油性物質は前記回転軸の中空部内へ案内される
ようにした構成である。According to the encoder device of the present invention, a rotary code plate is provided via a mounting member on a rotary shaft rotatably provided on a base via a bearing, and the rotary code plate is sandwiched therebetween. In the encoder device in which the light source and the light receiving body are provided to face each other, the mounting body has a cap shape, is screwed to the end of the rotating shaft via a screw portion, and the oily substance leaking from the bearing is It is configured to be guided to the gap between the mounting body and the end portion and the end surface of the end portion via the screw portion, and the rotating shaft has a cylindrical shape, and the oily substance is It is configured to be guided into the hollow portion of the rotating shaft.
【０００７】[0007]
【発明の実施の形態】以下、図面と共に本発明によるエ
ンコーダ装置の好適な実施の形態について説明する。な
お、従来例と同一又は同等部分には同一符号を付して説
明する。図１及び図２において符号１で示されるものは
基台であり、この基台１には軸受２を介して中空部３ａ
（中実の場合も可）を有する回転軸３が回転自在に設け
られている。前記回転軸３には、キャップ状の取付体４
を介して回転符号パターンを有する回転符号板５が回転
軸３と共に回転するように設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an encoder device according to the present invention will be described below with reference to the drawings. The same or equivalent parts as those in the conventional example will be described with the same reference numerals. In FIGS. 1 and 2, a reference numeral 1 denotes a base, and the base 1 has a hollow portion 3 a via a bearing 2.
A rotation shaft 3 having a solid shape (possible even in a solid state) is rotatably provided. The rotating shaft 3 has a cap-shaped mounting body 4
A rotation code plate 5 having a rotation code pattern is provided so as to rotate together with the rotation shaft 3 via the rotary shaft 3.
【０００８】前記取付体４の突出部４ａは、前記回転符
号板５の中心孔５ａを貫通して外部に突出して回転符号
板５と一体に回転できるように結合され、この取付体４
の軸芯位置に形成された円柱状の凹部４ｂのねじ部４ｂ
ａには前記回転軸３の端部３ｂのねじ部３ｂａが螺合し
ていることにより、取付体４と回転軸３とは一体状に結
合されている。The projecting portion 4a of the attachment 4 penetrates through the center hole 5a of the rotation code plate 5 and projects to the outside so as to be integrally rotatable with the rotation code plate 5.
Screw portion 4b of cylindrical concave portion 4b formed at the axial center position
Since the threaded portion 3ba of the end 3b of the rotating shaft 3 is screwed into a, the mounting body 4 and the rotating shaft 3 are integrally connected.
【０００９】前記取付体４の一面４ｃは、軸受２の内輪
２ａと当接して共回りするように構成され、この各ねじ
部３ｂａ，４ｂａには若干の隙間が形成されていると共
に、前部４ｂの平端面４ｄと前記回転軸３の端部３ｂの
端面３ｂｂとの間には若干の隙間が形成されている。従
って、軸受２から漏れ出たグリス等の油性物質は、矢印
Ａで示されるように、軸受２と取付体４の間、前記各ね
じ部３ｂａの隙間及び前記平端面４ｄと端面３ｂｂとの
間の隙間を介して逃げると共に、回転軸３の中空部３ａ
内にも逃げるように構成されている。The one surface 4c of the mounting body 4 is configured so as to come into contact with the inner ring 2a of the bearing 2 so as to rotate therewith. A slight gap is formed in each of the screw portions 3ba and 4ba, and a front portion is formed. A slight gap is formed between the flat end surface 4d of the rotary shaft 4b and the end surface 3bb of the end 3b of the rotary shaft 3. Accordingly, the oily substance such as grease leaked from the bearing 2 is, as shown by the arrow A, between the bearing 2 and the mounting body 4, the gap between the screw portions 3ba and the gap between the flat end surface 4d and the end surface 3bb. And the hollow portion 3a of the rotating shaft 3
It is configured to escape inside.
【００１０】前記基台１上には受光体６を有する基板７
が設けられ、この基板７は回転符号板５と軸受２との間
に位置している。前記回転符号板５の外側位置にはＬＥ
Ｄ等からなる光源８が設けられ、この光源８からの光は
回転符号板４のパターンを通過して受光体６で受光され
ると共に、前記光源８と受光体６とは回転符号板５を挟
むように互いに対向して配設されている。A substrate 7 having a photoreceptor 6 on the base 1
The substrate 7 is located between the rotation code plate 5 and the bearing 2. LE on the outside of the rotation code plate 5
A light source 8 made of D or the like is provided, and the light from the light source 8 passes through the pattern of the rotation code plate 4 and is received by the light receiving body 6. They are arranged facing each other so as to sandwich them.
【００１１】従って、回転軸３と共に回転する回転符号
板５のパターンすなわちスリットを光源からの光が通過
して受光体６で受光されることにより、エンコーダ信号
が受光体６から出力される。なお、前述の状態で、軸受
２から漏れ出たグリス等の油性物質は、前述したように
矢印Ａの経路を経て取付体４と回転軸３との間の隙間に
逃げ、回転符号板５側への油性物質の付着等は防止され
る。Accordingly, the light from the light source passes through the pattern of the rotary code plate 5 that rotates with the rotating shaft 3, that is, the slit, and is received by the photoreceptor 6, so that an encoder signal is output from the photoreceptor 6. In the above-described state, the oily substance such as grease leaked from the bearing 2 escapes to the gap between the mounting body 4 and the rotating shaft 3 via the path indicated by the arrow A as described above, and the rotation code plate 5 side Adhesion of oily substances to the surface is prevented.
【００１２】[0012]
【発明の効果】本発明によるエンコーダ装置は、以上の
ように構成されているため、次のような効果を得ること
ができる。すなわち、回転符号板に設けたキャップ状の
取付体が回転軸の端部に螺合され、軸受からの油性物質
が取付体と回転軸との間に形成された隙間を介して逃げ
るため、回転符号板への汚れを防止することができ、エ
ンコーダ信号の精度低下を防止することができる。Since the encoder device according to the present invention is configured as described above, the following effects can be obtained. That is, the cap-shaped mounting body provided on the rotation code plate is screwed to the end of the rotation shaft, and the oily substance from the bearing escapes through the gap formed between the mounting body and the rotation shaft, so that the rotation The stain on the code plate can be prevented, and the accuracy of the encoder signal can be prevented from lowering.
【図１】本発明によるエンコーダ装置を示す構成図であ
る。FIG. 1 is a configuration diagram showing an encoder device according to the present invention.
【図２】図１の要部を示す拡大詳細断面図である。FIG. 2 is an enlarged detailed sectional view showing a main part of FIG.
【図３】従来構成の構成図である。FIG. 3 is a configuration diagram of a conventional configuration.
【図４】図３の拡大詳細断面図である。FIG. 4 is an enlarged detailed sectional view of FIG. 3;
１ 基台 ２ 軸受 ３ 回転軸 ３ａ 中空部 ３ｂ 端部 ３ｂｂ 端面 ３ｂａ ねじ部 ４ｂａ ねじ部 ４ 取付体 ５ 回転符号板 ６ 受光体 ８ 光源 DESCRIPTION OF SYMBOLS 1 Base 2 Bearing 3 Rotating shaft 3a Hollow part 3b End part 3bb End surface 3ba Screw part 4ba Screw part 4 Mounting body 5 Rotation code plate 6 Light receiving body 8 Light source
Claims (2)
けられた回転軸(3)に取付体(4)を介して回転符号板(5)
を設け、前記回転符号板(5)を挟むように光源(8)と受光
体(6)が対向して設けられたエンコーダ装置において、
前記取付体(4)はキャップ状をなすと共に、ねじ部(3ba,
4ba)を介して前記回転軸(3)の端部(3b)に螺合され、前
記軸受(2)から漏れた油性物質は前記ねじ部(3ba,4ba)を
経て前記取付体(4)と前記端部(3b)及びこの端部(3b)の
端面(3bb)との間の隙間に案内されるように構成したこ
とを特徴とするエンコーダ装置。1. A rotation code plate (5) through a mounting body (4) on a rotating shaft (3) rotatably provided on a base (1) via a bearing (2).
In the encoder device in which the light source (8) and the light receiving body (6) are provided so as to sandwich the rotation code plate (5),
The mounting body (4) has a cap shape, and has a screw portion (3ba,
4ba) through the screw (3ba, 4ba), the oily substance which is screwed into the end (3b) of the rotary shaft (3) and leaks from the bearing (2). An encoder device characterized by being guided in a gap between the end (3b) and an end face (3bb) of the end (3b).
物質は前記回転軸(3)の中空部(3a)内へ案内されるよう
に構成したことを特徴とする請求項１記載のエンコーダ
装置。2. The rotary shaft (3) has a cylindrical shape, and the oily substance is configured to be guided into a hollow portion (3a) of the rotary shaft (3). An encoder device according to any one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000104467A JP4320428B2 (en) | 2000-04-06 | 2000-04-06 | Encoder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000104467A JP4320428B2 (en) | 2000-04-06 | 2000-04-06 | Encoder device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001289668A true JP2001289668A (en) | 2001-10-19 |
| JP4320428B2 JP4320428B2 (en) | 2009-08-26 |
Family
ID=18618002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000104467A Expired - Fee Related JP4320428B2 (en) | 2000-04-06 | 2000-04-06 | Encoder device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4320428B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011069703A (en) * | 2009-09-25 | 2011-04-07 | Taida Electronic Ind Co Ltd | Encoder having oil mist preventing structure |
| EP2378251A2 (en) | 2010-04-19 | 2011-10-19 | Dr. Johannes Heidenhain GmbH | Component for an angle measuring device |
| KR101347887B1 (en) * | 2012-04-30 | 2014-01-06 | 재단법인 포항지능로봇연구소 | Encoder |
| KR101349618B1 (en) * | 2012-04-30 | 2014-01-15 | 재단법인 포항지능로봇연구소 | Encoder |
| KR101383021B1 (en) * | 2012-04-30 | 2014-04-08 | 재단법인 포항지능로봇연구소 | Optical encoder |
| EP3382349A1 (en) * | 2017-03-29 | 2018-10-03 | Dr. Johannes Heidenhain GmbH | Angle measuring system |
-
2000
- 2000-04-06 JP JP2000104467A patent/JP4320428B2/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011069703A (en) * | 2009-09-25 | 2011-04-07 | Taida Electronic Ind Co Ltd | Encoder having oil mist preventing structure |
| EP2378251A2 (en) | 2010-04-19 | 2011-10-19 | Dr. Johannes Heidenhain GmbH | Component for an angle measuring device |
| US8584369B2 (en) | 2010-04-19 | 2013-11-19 | Dr. Johannes Heisenhain GmbH | Assembly for an angular position measuring device |
| KR101347887B1 (en) * | 2012-04-30 | 2014-01-06 | 재단법인 포항지능로봇연구소 | Encoder |
| KR101349618B1 (en) * | 2012-04-30 | 2014-01-15 | 재단법인 포항지능로봇연구소 | Encoder |
| KR101383021B1 (en) * | 2012-04-30 | 2014-04-08 | 재단법인 포항지능로봇연구소 | Optical encoder |
| EP3382349A1 (en) * | 2017-03-29 | 2018-10-03 | Dr. Johannes Heidenhain GmbH | Angle measuring system |
| CN108692679A (en) * | 2017-03-29 | 2018-10-23 | 约翰内斯·海德汉博士有限公司 | Angle measurement system |
| US10612945B2 (en) | 2017-03-29 | 2020-04-07 | Dr. Johannes Heidenhain Gmbh | Angle measurement system |
| CN108692679B (en) * | 2017-03-29 | 2021-05-25 | 约翰内斯·海德汉博士有限公司 | Angle measuring system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4320428B2 (en) | 2009-08-26 |
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