JP4877566B2 - Encoder device and servo motor with encoder device - Google Patents
Encoder device and servo motor with encoder device Download PDFInfo
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- JP4877566B2 JP4877566B2 JP2001157050A JP2001157050A JP4877566B2 JP 4877566 B2 JP4877566 B2 JP 4877566B2 JP 2001157050 A JP2001157050 A JP 2001157050A JP 2001157050 A JP2001157050 A JP 2001157050A JP 4877566 B2 JP4877566 B2 JP 4877566B2
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- Prior art keywords
- encoder device
- disk
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- encoder
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Description
【０００１】
【発明の属する技術分野】
本発明は、サーボモータ等に用いられるエンコーダのカバに関するものである。
【０００２】
【従来の技術】
従来のエンコーダ装置は、サーボモータ等の反負荷側ブラケットに取り付けられるハウジングに基板を固定する場合、前記ハウジングにほぼ等間隔に螺合固定した４本のスタッドを用いて部分的に基板を支えるとともに、ＬＥＤケースは単体でハウジングに固定し、たとえば大容量コンデンサなどの大形部品は、前記基板の下側に固定する構造を採用していた。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来のエンコーダ装置においては、次のような問題があった。
(1)前記基板をスタッドのみで固定しているため、前記ハウジングに軸受を介して回転自在に支持された回転ディスクと前記基板間のスペースが空いており、エンコーダ外からの埃や塵が侵入して回転ディスクに付着しやすい。
(2)部分的に基板を支えているため、大形部品である大容量コンデンサが基板の下側にぶら下がっている状態になり、安定性が悪く、振動に弱い。そのため、大容量コンデンサが欠落するおそれがある。本発明は、このような問題を解消するためになされたもので、回転ディスクの防塵性とエンコーダ自体の安定性を確保することができ、かつ大容量コンデンサの欠落を防止することができるエンコーダ装置およびエンコーダ装置付サーボモータを提供することを目的とするものである。
【０００４】
【課題を解決するための手段】
上記問題を解決するため、請求項１記載の発明は、回転ディスクを取り付けたハブを軸 受を介して回転自在に支持されているハウジングの外周部に、ディスクカバを取り付ける とともに、前記ディスクカバ内部側面から前記回転ディスク上面の円周上に突出部が形成 され、前記突出部にはＬＥＤが配置される貫通孔と大形部品を取り付けられる凹部が前記 回転ディスクとは軸方向に反対側に設けられ、前記ディスクカバの軸方向の端部に、前記 大形部品が回路接続された基板が取り付けられたことを特徴としている。
また、請求項２記載の発明は請求項１記載のエンコーダ装置を備えたエンコーダ装置付サーボモータとしたことを特徴としている。
【０００５】
【発明の実施の形態】
以下、本発明の実施例を図に基づいて説明する。
図１は本発明の実施例を示すエンコーダ装置の側断面図である。図１において、１はエンコーダ装置、２は図示しないサーボモータ等の反負荷側ブラケットに取り付けられるハウジング、３は前記ハウジング２に軸受４を介して回転自在に支持されたハブ、５は前記ハブ４に取り付けられた回転ディスク、６は前記ハウジング２の軸方向端面に取り付けられた受光素子、７は前記ハウジング２の外周部に取り付けたディスクカバ、８は前記ディスクカバ７の内部に形成した突出部、９は前記突出部８に取り付けたＬＥＤで、前記受光素子６と対応する位置に配置されている。１０は前記突出部８に形成した凹部、１１は前記ディスクカバ７の軸方向の端部に取り付けた基板、１２は大容量コンデンサなどの大形部品で、前記基板１１と回路接続されるとともに、前記ディスクカバ７の凹部１０に挿入して接着剤などで固定されている。１３は前記受光素子６と基板１１とを接続するフレキシブルなシート状のケーブルである。
本発明のエンコーダ装置１は、回転ディスク５と基板１１間の空きスペースを最大限にふさぐ構造になっているので、種々の利点がある。すなわち、ディスクカバ７と基板１１ とで内部空間を密閉する構造になるので、外部からの塵埃等の侵入を防ぐことができる。また、エンコーダ装置の周囲はディスクカバで覆われているので、強度が大きくなり、 また大容量コンデンサなどの大形部品１２をディスクカバ７と基板１１とで挟み込むよう にしており、また基板１１と大形部品１２の双方をディスクカバ７の全体で支えるように しているので、耐振動性が向上する。さらに、エンコーダ装置は、組立にあたっては各部 品を軸方向に積み上げるように取り付けていけばよいので、組立が容易になり製造性が向
上する。
【０００６】
【発明の効果】
以上述べたように、本発明によれば次のような効果がある。
(1)エンコーダ装置の周囲はディスクカバで覆われているので、塵埃等が入り込むことがなく防塵性が向上するとともに、強度が大きくなるので安定性が向上する。
(2)大容量コンデンサなどの大形部品がディスクカバに確実に固定されるので、対振動特性が向上する。
(3)エンコーダ装置は、各部品を軸方向に積み上げるように取り付けていくことができるので、組立が容易になり製造性が向上する。
【図面の簡単な説明】
【図１】本発明の実施例を示すエンコーダ装置の側断面図である
【符号の説明】
１ エンコーダ装置
２ ハウジング
３ ハブ
４ 軸受
５ 回転ディスク
６ 受光素子
７ ディスクカバ
８ 突出部
９ ＬＥＤ
１０ 凹部
１１ 基板
１２ 大形部品
１３ ケーブル [0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cover of an encoder used for a servo motor or the like.
[0002]
[Prior art]
In a conventional encoder device, when a substrate is fixed to a housing attached to a non-load side bracket such as a servomotor, the substrate is partially supported by using four studs screwed to the housing at substantially equal intervals. The LED case is fixed to the housing as a single unit, and a large part such as a large-capacity capacitor is fixed to the lower side of the substrate.
[0003]
[Problems to be solved by the invention]
However, the conventional encoder device has the following problems.
(1) Since the substrate is fixed only by the stud, there is a space between the rotating disk that is rotatably supported by the housing via a bearing and the substrate, and dust and dirt from outside the encoder enter. And easily adheres to the rotating disk.
(2) Since the substrate is partially supported, the large-capacity capacitor, which is a large component, is in a state of being hung on the lower side of the substrate, and is not stable and susceptible to vibration. Therefore, there is a possibility that a large-capacity capacitor is lost. The present invention has been made to solve such a problem, and is capable of ensuring the dustproof property of the rotating disk and the stability of the encoder itself, and can prevent the loss of a large-capacity capacitor. It is another object of the present invention to provide a servo motor with an encoder device .
[0004]
[Means for Solving the Problems]
In order to solve the above problem, the invention according to claim 1 is characterized in that a disk cover is attached to an outer peripheral portion of a housing in which a hub to which a rotating disk is attached is rotatably supported via a bearing, and the inside of the disk cover A protrusion is formed on the circumference of the upper surface of the rotating disk from a side surface , and a through hole in which the LED is arranged and a recess for attaching a large component are provided on the protruding part on the opposite side in the axial direction from the rotating disk In addition, a board to which the large component is connected in a circuit is attached to an end portion in the axial direction of the disc cover .
According to a second aspect of the present invention, a servo motor with an encoder device including the encoder device according to the first aspect is provided.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side sectional view of an encoder apparatus showing an embodiment of the present invention. In FIG. 1, 1 is an encoder device, 2 is a housing attached to a non-load side bracket such as a servo motor (not shown), 3 is a hub rotatably supported by the housing 2 via a bearing 4, and 5 is the hub 4 A rotating disk attached to the housing 2, a light receiving element 6 attached to the end surface of the housing 2 in the axial direction, a disk cover 7 attached to the outer periphery of the housing 2, and a protrusion 8 formed inside the disk cover 7. , 9 are LEDs attached to the protrusion 8 and are arranged at positions corresponding to the light receiving element 6. Recesses formed on the projecting portion 8 is 10, 11 substrate attached to the axial end part of the disc cover 7, 12 is a large component such as a large-capacity capacitor, along with the said base plate 11 and the circuit connection The disc cover 7 is inserted into the recess 10 and fixed with an adhesive or the like. Reference numeral 13 denotes a flexible sheet-like cable for connecting the light receiving element 6 and the substrate 11.
The encoder device 1 of the present invention has various advantages because it has a structure that maximizes the space between the rotary disk 5 and the substrate 11. In other words, since the inner space is sealed by the disc cover 7 and the substrate 11, entry of dust and the like from the outside can be prevented. Further, since the periphery of the encoder device is covered with a disk cover, the strength is increased, and a large component 12 such as a large-capacitance capacitor is sandwiched between the disk cover 7 and the substrate 11. Since both the large parts 12 are supported by the entire disk cover 7, vibration resistance is improved. Furthermore, the encoder device can be assembled so that the components are stacked in the axial direction, which facilitates assembly and improves manufacturability.
[0006]
【The invention's effect】
As described above, the present invention has the following effects.
(1) Since the periphery of the encoder device is covered with a disc cover, dust and the like are not introduced and dustproofness is improved, and strength is increased and stability is improved.
(2) Large parts such as large capacitors are securely fixed to the disk cover, improving vibration resistance.
(3) Since the encoder device can be mounted so that the components are stacked in the axial direction, assembly is facilitated and productivity is improved.
[Brief description of the drawings]
FIG. 1 is a side sectional view of an encoder apparatus showing an embodiment of the present invention.
DESCRIPTION OF SYMBOLS 1 Encoder apparatus 2 Housing 3 Hub 4 Bearing 5 Rotating disk 6 Light receiving element 7 Disc cover 8 Protruding part 9 LED
10 recess 11 substrate 12 large component
13 Cable
Claims (2)
前記突出部にはＬＥＤが配置される貫通孔と大形部品を取り付けられる凹部が前記回転ディスクとは軸方向に反対側に設けられ、
前記ディスクカバの軸方向の端部に、前記大形部品が回路接続された基板が取り付けられたことを特徴とするエンコーダ装置。A disk cover is attached to the outer periphery of a housing that is rotatably supported by a hub to which a rotating disk is attached via a bearing, and a protrusion is formed on the circumference of the upper surface of the rotating disk from the inner surface of the disk cover. ,
Wherein the projecting portion is an LED through-hole and recess the rotary disk mounted large form components disposed provided axially on the opposite side,
Wherein the ends of the axial direction of the disk cover, the encoder apparatus large shape parts, characterized in that a substrate having a circuit connected attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001157050A JP4877566B2 (en) | 2001-05-25 | 2001-05-25 | Encoder device and servo motor with encoder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001157050A JP4877566B2 (en) | 2001-05-25 | 2001-05-25 | Encoder device and servo motor with encoder device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002350190A JP2002350190A (en) | 2002-12-04 |
| JP4877566B2 true JP4877566B2 (en) | 2012-02-15 |
Family
ID=19000972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001157050A Expired - Fee Related JP4877566B2 (en) | 2001-05-25 | 2001-05-25 | Encoder device and servo motor with encoder device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4877566B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI794663B (en) * | 2020-10-14 | 2023-03-01 | 達明機器人股份有限公司 | A encoder module of robotic arm |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3093430B2 (en) * | 1992-04-30 | 2000-10-03 | 日本電産コパル株式会社 | Setting encoder and its assembling method |
-
2001
- 2001-05-25 JP JP2001157050A patent/JP4877566B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002350190A (en) | 2002-12-04 |
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