JPS6231223A - Optical encoder - Google Patents

Optical encoder

Info

Publication number
JPS6231223A
JPS6231223A JP16971785A JP16971785A JPS6231223A JP S6231223 A JPS6231223 A JP S6231223A JP 16971785 A JP16971785 A JP 16971785A JP 16971785 A JP16971785 A JP 16971785A JP S6231223 A JPS6231223 A JP S6231223A
Authority
JP
Japan
Prior art keywords
led
case
light emitting
emitting element
printed circuit
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
Application number
JP16971785A
Other languages
Japanese (ja)
Inventor
Hiroyuki Uchida
裕之 内田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fanuc Corp filed Critical Fanuc Corp
Priority to JP16971785A priority Critical patent/JPS6231223A/en
Publication of JPS6231223A publication Critical patent/JPS6231223A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/301—Assembling printed circuits with electric components, e.g. with resistor by means of a mounting structure

Landscapes

  • Analogue/Digital Conversion (AREA)
  • Optical Transform (AREA)

Abstract

PURPOSE:To make it possible to adjust the fitting position of a light emitting element case to a printed circuit board in its production process by forming an aperture part of the printed circuit board fitting the light emitting element case with a shape having proper margin to the external shape of the light emitting element case. CONSTITUTION:The aperture part 121 for fitting the light emitting diode (LED) case has several-mm tolerance delta for engaging the LED case in it. A LED engaging part 13 has an LED pin fitting part in it. A projection part 14 of the LED case 12 is attached from the lower surface of the printed board 11 and can be fixed after the end of optical adjustment. Under said constitution, the printed board 11 is previously fixed on the center axis of an encoder, an interval bolt and one end of a connection line on a fixing slit board. While adjusting the output waveform, the LED is positioned, and after sufficiently considering the linearity of the LED and its inclination from the center shaft, the LED is fixed by an adhering method such as melting, adhesion and bonding.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は発光部の光学的調整の容品な光学式エンコーダ
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an elegant optical encoder for optical adjustment of a light emitting part.

本発明による光学式エンコーダは、例えば数値制御工作
機械の分野におけるサーボモータの回転速度検出および
位置制御などに用いられるものである。The optical encoder according to the present invention is used, for example, for detecting the rotational speed and controlling the position of a servo motor in the field of numerically controlled machine tools.

〔従来技術、および発明が解決しようとする問題点〕[Prior art and problems to be solved by the invention]

一般に光学式エンコーダにおいては、光源としての発光
ダイオード（ＬＥＤ）と、例えばモータの回転軸に固定
された回転スリット板と、之と対向して特定パターンを
有する固定スリット板と、光源からの光が回転スリット
板と固定スリット板の透過部を夫々通過し、その光を受
光して信号に変換する受光素子とを備えている。受光素
子は受光素子部において信号増幅器と矩形波変換器とに
接続されている。Generally, in an optical encoder, a light emitting diode (LED) is used as a light source, a rotating slit plate fixed to the rotating shaft of a motor, a fixed slit plate facing the same and having a specific pattern, and light from the light source. It includes a light receiving element that receives the light that passes through the transmitting portions of the rotating slit plate and the fixed slit plate, and converts it into a signal. The light receiving element is connected to a signal amplifier and a rectangular wave converter in the light receiving element section.

従来、ＬＥＤを取付ける場合、電源側のプリント板にＬ
ＥＤを直接はめこむか、或はプリント板に固定されたプ
ラスチックのＬＥＤケースにＬＥＤをはめこむかする方
法が採用されてきた。しかしこれらの方法ではＬＥＤと
最終的にプリント仮に直接固定されることに−なり、量
産化のＬＥＤの中には、指向性に関し位置が適当でない
ものが見出された場合、一旦固定されると光学系の調整
が不可能となり、低分解能のパルス特性しか得られない
結果を招くことになる。Conventionally, when installing an LED, there is an L on the printed board on the power supply side.
Methods have been adopted in which the ED is directly fitted or the LED is fitted into a plastic LED case fixed to a printed board. However, with these methods, the LED and the final print are temporarily fixed directly, and if some mass-produced LEDs are found to be in inappropriate positions with regard to directivity, once they are fixed, Adjustment of the optical system becomes impossible, resulting in only low-resolution pulse characteristics being obtained.

之を改良してプリント板とフランジとを固定する部材と
プリント板との間に可動範囲を存在させ、プリント板自
体と受光部に対して移動させ、最適位置を見出して決定
してから固定する方法が採られて来た。この場合にも受
光部とプリント板とを接続するための固定接続線が存在
するので光学的調整に適した方法がとれなかった。接続
線を可撓的なリード線に変更すればプリント板の位置は
可動となるが、耐雑音性と作業性の点から望ましい方法
ではなかった。By improving this, a movable range is created between the printed board and the member that fixes the printed board and flange, and the printed board itself and the light receiving section are moved, and the optimal position is found and determined before being fixed. A method has been adopted. In this case as well, since there is a fixed connection line for connecting the light receiving section and the printed board, it is not possible to use a method suitable for optical adjustment. If the connecting wires were changed to flexible lead wires, the position of the printed board could be moved, but this was not a desirable method in terms of noise resistance and workability.

本発明の目的は発光素子ケース装着用のプリント回路板
の開孔部は発光素子ケースの外形に対して適切な余裕を
有する形状をもって設けられるようにし、製造過程にお
いてプリント回路板における発光素子ケースの装着位置
が調整可能であるようにし、精度の向上した光学式エン
コーダを得ることにある。An object of the present invention is to provide an opening in a printed circuit board for mounting a light emitting device case with a shape that has an appropriate margin relative to the outer shape of the light emitting device case, and in the manufacturing process, the hole in the printed circuit board for mounting the light emitting device case is To obtain an optical encoder whose mounting position is adjustable and whose accuracy is improved.

〔問題点を解決するための手段、および作用〕本発明に
よれば、光学式エンコーダ用発光素子、該発光素子を収
容する発光素子ケース、および該発光素子ケース装着用
の開孔部は該発光素子ケースの外形に対して余裕を有す
る如き形状の発光素子ケース装着用の開孔部を有するプ
リント回路板。[Means and effects for solving the problem] According to the present invention, a light emitting element for an optical encoder, a light emitting element case accommodating the light emitting element, and an opening for attaching the light emitting element case A printed circuit board having an opening portion for mounting a light emitting element case having a shape that has a margin with respect to the outer shape of the element case.

を具備し、前記余裕により該プリント回路板における該
発光素子ケースの装着位置が調整可能となっていること
を特徴とする発光素子を設けたプリント回路板を有する
光学式エンコーダが提供される。There is provided an optical encoder having a printed circuit board provided with a light emitting element, characterized in that the mounting position of the light emitting element case on the printed circuit board can be adjusted by the margin.

本発明による光学式エンコーダにおいては、プリント板
をまずエンコーダ内の支持部分に予め固定してからＬＥ
Ｄケースを位置決めして調整・接着が行われ、所望の光
学的調整が施されたものとして、光学式エンコーダが実
現する。In the optical encoder according to the present invention, the printed circuit board is first fixed in advance to a supporting part within the encoder, and then the LE
The D case is positioned, adjusted and bonded, and an optical encoder is realized with the desired optical adjustment.

〔実施例〕〔Example〕

本発明の一実施例としての光学式エンコーダにおける発
光部を含むプリント回路板の平面図が第１図に示される
。A plan view of a printed circuit board including a light emitting section in an optical encoder as an embodiment of the present invention is shown in FIG.

第１図装置の形成過程を説明する図が第２図ないし第５
図に示される。ＬＥＤケースが第２図に、プリント回路
板が第３図に示される。プリント回路板とＬＥＤケース
の結合前の状況が第４図に、プリント回路板にＬＥＤケ
ースが装着された状況が第５図に示される。Figure 1. Figures 2 to 5 are diagrams explaining the process of forming the device.
As shown in the figure. The LED case is shown in FIG. 2, and the printed circuit board is shown in FIG. FIG. 4 shows a state before the printed circuit board and the LED case are combined, and FIG. 5 shows a state in which the LED case is attached to the printed circuit board.

第１図においてはこの発光部プリント板１１の上面図を
拡大して示している。１２１はＬＥＤケース上又を嵌入
するための数龍の公差δを有する発光素子ケース装着用
の開孔部である。第２図は発光素子ＬＥＤケース上１の
平面図、第３図は開孔１２１を有するプリント板１１を
示す図である。FIG. 1 shows an enlarged top view of the light emitting portion printed board 11. As shown in FIG. Reference numeral 121 denotes a hole for fitting the light emitting element case, which has a tolerance δ of several dragons and is used to fit the LED case top. FIG. 2 is a plan view of the light emitting element LED case top 1, and FIG. 3 is a diagram showing the printed board 11 having an opening 121.

１３はＬＥＤはめこみ部であり、内部にＬＥＤピン取付
部を有する。また１４はＬＥＤケース１２の突起部であ
り、プリント板１１の下面より取付け、光学的調整の終
了後固定可能なものである。Reference numeral 13 denotes an LED fitting part, which has an LED pin attachment part inside. Reference numeral 14 denotes a protrusion of the LED case 12, which can be attached from the bottom surface of the printed board 11 and fixed after optical adjustment is completed.

この場合の微調整公差は数ＩＯμｍのオーダーである。The fine adjustment tolerance in this case is on the order of several IO μm.

このような構造により、プリント板１１は従来と同様に
エンコーダの中心軸と間隔ボルト、および固定スリット
台上の接続線部一端に予め固定しておく。ついで出力波
形を調整しながらＬＥＤを位置決めし、ＬＥＤの直進性
、中心軸との傾斜を十分に考慮してから溶融、接着、ボ
ンディング等の接着方法で固定すればよい。With this structure, the printed board 11 is fixed in advance to the central axis of the encoder, the spacing bolt, and one end of the connecting line on the fixed slit stand, as in the conventional case. Next, the LED may be positioned while adjusting the output waveform, and the LED may be fixed by an adhesive method such as melting, adhesion, bonding, etc. after fully considering the straightness of the LED and the inclination with respect to the central axis.

前述の構成によりＬＥＤを精度よく取付けることができ
ると共に、交換も自由に行うことができる。それにより
、精度の低下することも防ぐことができる。更に出力波
形を見なからＬＥＤの位置決めができるので精度を必要
に応じて向上させることもできる。With the above-described configuration, the LED can be mounted with high precision and can be replaced freely. Thereby, it is also possible to prevent a decrease in accuracy. Furthermore, since the LED can be positioned without looking at the output waveform, the accuracy can be improved as necessary.

第６図は第１図装置が用いられた光学式エンコーダの全
体を示す。第６図において、１１はプリント板、２０は
ＬＥＤ、２２はエンコーダのカバー、２３は電源用およ
び光フアイバー用のケーブル、２４は接続線部で＃続線
がレジンモールドされている。２５は回転スリット板、
２６は固定スリット板、２７は受光部３０を含んだ固定
スリット台、２８はモータ回転軸、２９はベアリングを
含むフランジ、３１は締付用ボルト、３２　、３３はプ
リント板を挟んで締付・固定用のボルトである。FIG. 6 shows the entire optical encoder in which the device shown in FIG. 1 is used. In FIG. 6, 11 is a printed board, 20 is an LED, 22 is an encoder cover, 23 is a cable for a power supply and an optical fiber, and 24 is a connection line part, and the # connection line is molded with resin. 25 is a rotating slit plate;
26 is a fixed slit plate, 27 is a fixed slit base including a light receiving part 30, 28 is a motor rotation shaft, 29 is a flange including a bearing, 31 is a tightening bolt, 32 and 33 are tightening bolts with a printed board in between. This is a bolt for fixing.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、光学式エンコーダにおいて発光素子Ｌ
ＥＤを収容するケース装着用のプリント回路板の開孔部
は発光素子ケースの外形に対して適切な余裕を有する形
状をもって設けられており、上記余裕により製造過程に
おいてプリント回路板における発光素子ケースの装着位
置の調整が可能であり、精度の向上した光学式エンコー
ダを得ることができる。According to the present invention, the light emitting element L in the optical encoder
The opening of the printed circuit board for attaching the case that houses the ED is provided with a shape that has an appropriate margin for the outer shape of the light emitting element case, and due to the above margin, the light emitting element case on the printed circuit board can be attached during the manufacturing process. The mounting position can be adjusted, and an optical encoder with improved accuracy can be obtained.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の光学式エンコーダにおいて、ＬＥＤケ
ースを装着したプリント回路板を示す平面図、 第２図はＬＥＤケースを示す平面図、 第３図はＬ　Ｅ　Ｄケース用開孔部をもつプリント回路
板を示す平面図、 第４図はプリント回路板とＬＥＤケースの結合前の状況
を示す立面図、 第５図はＬＥＤケースを装着したプリント板を示す図で
あって、第１図のＶ−Ｖ線に沿う断面図、第６図は第１
図装置が用いられた光学式エンコーダを示す図である。 １１　　　　プリント板 上又　　　ＬＥＤケース １２０　　　　ＬＥＤはめこみ部底板外側寸法１２１　
　　　開孔部 １３　　　　ＬＥＤはめこみ部 １３１　、１３２　　はめこみ部開孔 工４　　　突起部 １４０　　　　ＬＥＤケース突起部外側寸法２０　　　
　ＬＥＤ ２２　　　エンコーダカバー ２３　　　ケーブル ２４　　　接続線部 ２５　　　回転スリット板 ２６　　　固定スリット板 ２７　　　固定スリット板台 ２８　　　モータ回転軸 ２９　　　フランジ ３０　　　受光素子 ３１　　　締付用ボルトFig. 1 is a plan view showing a printed circuit board equipped with an LED case in the optical encoder of the present invention, Fig. 2 is a plan view showing the LED case, and Fig. 3 is a plan view showing an LED case having an opening. FIG. 4 is a plan view showing the printed circuit board, FIG. 4 is an elevational view showing the situation before the printed circuit board and LED case are combined, FIG. 5 is a view showing the printed circuit board with the LED case attached, and FIG. 6 is a cross-sectional view taken along the line V-V of
1 is a diagram illustrating an optical encoder in which the device shown in FIG. 11 Printed board top LED case 120 LED inset bottom plate outer dimensions 121
Opening part 13 LED fitting part 131, 132 Fitting part drilling work 4 Projection part 140 LED case projection part outer dimension 20
LED 22 Encoder cover 23 Cable 24 Connection wire section 25 Rotating slit plate 26 Fixed slit plate 27 Fixed slit plate base 28 Motor rotating shaft 29 Flange 30 Light receiving element 31 Tightening bolt

Claims (1)

【特許請求の範囲】 光学式エンコーダ用発光素子、 該発光素子を収容する発光素子ケース、および該発光素
子ケース装着用の開孔部を有するプリント回路板であっ
て、該開孔部は該発光素子ケースの外形に対して余裕を
有するもの、 を具備し、 該余裕により該プリント回路板における該発光素子ケー
スの装着位置が調整可能となっていることを特徴とする
発光素子を設けたプリント回路板を有する光学式エンコ
ーダ。[Scope of Claims] A printed circuit board having a light emitting element for an optical encoder, a light emitting element case for accommodating the light emitting element, and an opening for attaching the light emitting element case, the opening being for the light emitting element. A printed circuit provided with a light-emitting element, characterized in that it has a margin with respect to the outer shape of the element case, and the mounting position of the light-emitting element case on the printed circuit board can be adjusted by the margin. Optical encoder with a plate.
JP16971785A 1985-08-02 1985-08-02 Optical encoder Pending JPS6231223A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16971785A JPS6231223A (en) 1985-08-02 1985-08-02 Optical encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16971785A JPS6231223A (en) 1985-08-02 1985-08-02 Optical encoder

Publications (1)

Publication Number Publication Date
JPS6231223A true JPS6231223A (en) 1987-02-10

Family

ID=15891557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16971785A Pending JPS6231223A (en) 1985-08-02 1985-08-02 Optical encoder

Country Status (1)

Country Link
JP (1) JPS6231223A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5448891A (en) * 1993-03-10 1995-09-12 Matsushita Electric Industrial Co., Ltd. Dehumidifier

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890111A (en) * 1981-11-25 1983-05-28 Tokyo Keiki Co Ltd Displacement detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5890111A (en) * 1981-11-25 1983-05-28 Tokyo Keiki Co Ltd Displacement detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5448891A (en) * 1993-03-10 1995-09-12 Matsushita Electric Industrial Co., Ltd. Dehumidifier

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