JPS6161492B2 - - Google Patents
Info
- Publication number
- JPS6161492B2 JPS6161492B2 JP55185503A JP18550380A JPS6161492B2 JP S6161492 B2 JPS6161492 B2 JP S6161492B2 JP 55185503 A JP55185503 A JP 55185503A JP 18550380 A JP18550380 A JP 18550380A JP S6161492 B2 JPS6161492 B2 JP S6161492B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- light
- photoelectric switch
- adapter
- amplifier unit
- 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.)
- Expired
Links
- 239000013307 optical fiber Substances 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Description
【発明の詳細な説明】
この発明は、光フアイバを用いた光フアイバ式
光電スイツチに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical fiber type photoelectric switch using an optical fiber.
ところで、従来よりアンプ分離型の光電スイツ
チが知られている。この光電スイツチは第１図及
び第２図に示すように、回路部が全て収められた
アンプユニツト１とセンサ部（投光部３１と受光
部３２とからなる）３とを分離し、センサ部３に
はLED等の投光素子３５とフオトダイオード等
の受光素子３６のみを備え、リード線３３，３４
をソケツト２のネジ端子２１に接続し、このソケ
ツト２にアンプユニツト１のピン１１を差し込む
ことによりアンプユニツト１とセンサ部３とを電
気的に接続するようにしたもので、センサ部３は
部品点数が少なく小型にできること、及びアンプ
ユニツト１とセンサ部３とを種々のものに取り替
えることができること等の利点を有し、センサ部
の取付スペースの小さな用途等に重宝されている
ものである。なお、この第１図及び第２図におい
て、アンプユニツト１には発振回路１０３が収め
られており、その発振出力で投光素子３５をパル
ス点灯して、レンズ３７を介してパルス光を投射
させ、検出物体４によつて反射された光をレンズ
３８で収束して受光素子３６に導く。そしてこの
受光素子３６から得た受光信号をアンプユニツト
１に内蔵されている交流増巾回路１０４をへて検
波回路１０６に導き検波し、更にスイツチング回
路１０７により反射光の有無に応じたスイツチン
グ出力を生じる。そしてスイツチング回路１０７
の出力信号は動作切換スイツチ１０８をへてリレ
ー駆動回路１０９に送られ、出力リレー１１０が
駆動され、接点出力が生じることになる。これら
の回路により構成される受光回路と電源トランス
１０１及び安定化電源１０２がこのアンプユニツ
ト１内に収められている。可変抵抗１０５は交流
増巾回路１０４の増巾度を調整して感度を調整す
るためのものであり、そのつまみ１２がアンプユ
ニツト１のパネルに配置される。また、スイツチ
ング回路１０７の動作に応じて入光状態を表示す
る表示器１３がパネル上に配置されており、更に
動作切換スイツチ１０８のつまみ１４も配置され
ている。 By the way, amplifier-separated type photoelectric switches have been known for some time. As shown in FIGS. 1 and 2, this photoelectric switch separates an amplifier unit 1 containing all circuit sections from a sensor section 3 (consisting of a light emitting section 31 and a light receiving section 32). 3 has only a light emitting element 35 such as an LED and a light receiving element 36 such as a photodiode, and has lead wires 33, 34.
is connected to the screw terminal 21 of the socket 2, and the pin 11 of the amplifier unit 1 is inserted into the socket 2 to electrically connect the amplifier unit 1 and the sensor section 3.The sensor section 3 is a component. It has the advantage of being small in size due to the small number of parts, and that the amplifier unit 1 and sensor section 3 can be replaced with various types, and is useful in applications where the mounting space for the sensor section is small. Note that in FIGS. 1 and 2, the amplifier unit 1 houses an oscillation circuit 103, and its oscillation output pulses the light projecting element 35 to project pulsed light through the lens 37. , the light reflected by the detection object 4 is converged by a lens 38 and guided to a light receiving element 36. The light-receiving signal obtained from the light-receiving element 36 is guided to the detection circuit 106 through the AC amplification circuit 104 built in the amplifier unit 1 for detection, and the switching circuit 107 outputs a switching output depending on the presence or absence of reflected light. arise. and switching circuit 107
The output signal is sent to the relay drive circuit 109 via the operation changeover switch 108, and the output relay 110 is driven to generate a contact output. A light receiving circuit constituted by these circuits, a power transformer 101, and a stabilized power supply 102 are housed within the amplifier unit 1. The variable resistor 105 is used to adjust the degree of amplification of the AC amplifying circuit 104 to adjust the sensitivity, and its knob 12 is arranged on the panel of the amplifier unit 1. Further, a display 13 for displaying the light incident state according to the operation of the switching circuit 107 is arranged on the panel, and a knob 14 of an operation changeover switch 108 is also arranged.
このアンプ分離型の光電スイツチは上記のよう
な種々の利点がある反面、リード線３３，３４と
して高価で作業性の悪いシールドケーブルを用い
なければならず、またこのリード線３３，３４を
通る信号は微弱でしかも高い周波数のパルス信号
であるため、雑音の影響を受け易いという不利な
面もある。その対策として、光フアイバ式光電ス
イツチがあるが、光フアイバ用として別個のアン
プユニツトを設けなければならなかつたので、機
種数が増大し、在庫や納期の面で支障をきたすこ
とがある。 Although this amplifier-separated photoelectric switch has various advantages as mentioned above, it requires the use of shielded cables that are expensive and difficult to work with as the lead wires 33 and 34, and the signals passing through these lead wires 33 and 34 are Since it is a weak and high frequency pulse signal, it also has the disadvantage of being susceptible to noise. As a countermeasure for this, there is an optical fiber type photoelectric switch, but since a separate amplifier unit must be provided for the optical fiber, the number of models increases, which may cause problems in terms of inventory and delivery times.
本発明は、上記のアンプ分離型の光電スイツチ
にアダプタを介して光フアイバを取り付けること
ができるようにし、アンプ分離型の上記の不利な
面のみを除くようにするとともに、単にアダプタ
を介して光フアイバを取り付ければ従来のアンプ
分離型光電スイツチのアンプユニツト等をそのま
ま用いて光フアイバ式光電スイツチを構成でき、
もつて上記の在庫管理等の問題点を解消した光フ
アイバ式光電スイツチを提供することを目的とす
る。 The present invention makes it possible to attach an optical fiber to the above-described amplifier-separated type photoelectric switch via an adapter, thereby eliminating only the above-mentioned disadvantages of the amplifier-separated type photoelectric switch. By attaching a fiber, you can configure an optical fiber type photoelectric switch by using the amplifier unit of a conventional amplifier-separated type photoelectric switch as is.
It is an object of the present invention to provide an optical fiber type photoelectric switch which solves the above-mentioned problems such as inventory management.
そして、本願考案によれば、光電変換素子と光
フアイバの固定部とアンプユニツト取付用のソケ
ツトのネジ端子接続部を備えた基板とからなる光
フアイバ式光電スイツチのアダプタとしたので、
光フアイバ式光電スイツチを形成するに際して、
光電スイツチ用のアンプユニツトからの電気信号
をアダプタの基板上で光電変換して光フアイバに
信号を伝達できる。したがつて、ソケツトの電気
配線が不必要となり電気的ノイズに強い光フアイ
バ式光電スイツチを提供することができる。 According to the present invention, the adapter for the optical fiber photoelectric switch is made up of a substrate having a photoelectric conversion element, an optical fiber fixing part, and a screw terminal connection part of a socket for mounting an amplifier unit.
When forming a fiber optic photoelectric switch,
The electrical signal from the amplifier unit for the photoelectric switch can be photoelectrically converted on the adapter board and the signal can be transmitted to the optical fiber. Therefore, there is no need for electrical wiring for the socket, and it is possible to provide an optical fiber type photoelectric switch that is resistant to electrical noise.
また、光フアイバとソケツトとの間のケーブル
途中に光電変換部分を備えなくても済むので、光
フアイバそのものが小型化でき、狭い場所での物
体検出などに最適の光電スイツチを提供できる。 Furthermore, since there is no need to provide a photoelectric conversion part in the middle of the cable between the optical fiber and the socket, the optical fiber itself can be made smaller, and a photoelectric switch that is optimal for detecting objects in narrow spaces can be provided.
さらに、従来のアンプユニツトをそのまま利用
して光フアイバ式光電スイツチを形成できるので
アンプユニツトの種類を増やすことなく対処でき
機種数の増加等で発生する在庫管理上の諸問題も
解消できるという効果を奏する。 Furthermore, since it is possible to form an optical fiber photoelectric switch by using conventional amplifier units as they are, it is possible to deal with this without increasing the types of amplifier units, and it also has the effect of resolving various inventory management problems that arise due to an increase in the number of models. play.
以下、本発明の一実施例について図面を参照し
ながら説明する。第３図及び第４図に示すよう
に、投光用光フアイバ５１と受光用光フアイバ５
２とでなる光フアイバユニツト５の一端がアダプ
タ６に着脱自在に取り付けられ、このアダプタ６
もまたソケツト２のネジ端子２１に着脱自在に取
り付けられる。このアダプタ６は電気−光の変換
を行なうもので、アダプタ６内には投光素子６１
と受光素子６２とが内蔵されており、光フアイバ
５１，５２の一端がこれらの素子に対接するよう
取り付けられ、投光素子６１の光が投光用光フア
イバ５１を通じて送られ、その他端からレンズ５
３を介して投射され、反射光がレンズ５４を介し
て受光用光フアイバ５２の一端に導かれ、この光
が受光用光フアイバ５２を通つて受光素子６２に
送られる。これら第３図及び第４図の他の構成は
第１図及び第２図と同一であり、換言すると第１
図及び第２図のセンサ部３の代りにアダプタ６を
介して光フアイバユニツト５を取り付けたのであ
る。 An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 3 and 4, the light emitting optical fiber 51 and the light receiving optical fiber 5
One end of the optical fiber unit 5 consisting of
is also detachably attached to the screw terminal 21 of the socket 2. This adapter 6 performs electrical-to-optical conversion, and inside the adapter 6 is a light emitting element 61.
and a light receiving element 62 are built in, and one ends of optical fibers 51 and 52 are attached so as to face these elements, and the light from the light emitting element 61 is sent through the light emitting optical fiber 51, and from the other end to the lens. 5
3, the reflected light is guided to one end of the light-receiving optical fiber 52 via the lens 54, and this light is sent to the light-receiving element 62 through the light-receiving optical fiber 52. The other configurations of these Figures 3 and 4 are the same as those of Figures 1 and 2, in other words,
An optical fiber unit 5 is attached via an adapter 6 in place of the sensor section 3 shown in FIGS.
アダプタ６は第５図に示すようにプリント基板
により構成された端子部６３を有し、この端子部
６３がソケツト２のネジ端子２１に取り付けられ
るようになつている。この端子部６３には光フア
イバ５１，５２の固定台６４がネジ６６により取
り付けられている。この固定台６４には光フアイ
バ５１，５２を配置するための半円柱状溝部６４
ａが設けられており、また押え部材６５にも半円
柱状の溝部６５ａが設けられている。そしてこの
溝部６４ａ，６５ａの一端側に投光素子６１、受
光素子６２（これらの素子は端子部６３に電気的
に接続されている）が配置され、締付ネジ６７に
より押え部材６５を固定台６４に取り付けること
により、光フアイバ５１，５２を、その端部が投
光素子６１及び受光素子６２に対接した状態で、
固定するようにしている。そのため、半円柱状の
溝部６４ａ，６５ａの内径を光フアイバ５１，５
２の外径よりもやや小さくするようにしている。
更に、溝６４ａ，６５ａの長さは光フアイバ５
１，５２の半径の10〜20倍とし、光フアイバの径
方向の（単位長さ当りの）圧縮力が比較的少なく
なるようにして充分堅固に固定している。光フア
イバは局部的に径方向に圧縮すると伝送損失が増
大するが、上記のようにしているため局部的な力
が加わることなく、損失増加を避けることができ
る。 As shown in FIG. 5, the adapter 6 has a terminal portion 63 made of a printed circuit board, and this terminal portion 63 is adapted to be attached to the screw terminal 21 of the socket 2. A fixing base 64 for the optical fibers 51 and 52 is attached to this terminal portion 63 with screws 66. This fixing table 64 has a semi-cylindrical groove portion 64 for arranging the optical fibers 51 and 52.
a is provided, and the holding member 65 is also provided with a semi-cylindrical groove portion 65a. A light emitting element 61 and a light receiving element 62 (these elements are electrically connected to the terminal part 63) are arranged at one end side of the grooves 64a and 65a, and the holding member 65 is fixed to the base with a tightening screw 67. By attaching the optical fibers 51 and 52 to the light emitting element 61 and the light receiving element 62,
I'm trying to fix it. Therefore, the inner diameter of the semi-cylindrical grooves 64a, 65a is set to the optical fibers 51, 5.
I try to make it slightly smaller than the outer diameter of 2.
Furthermore, the length of the grooves 64a and 65a is the same as that of the optical fiber 5.
The diameter of the optical fiber is 10 to 20 times the radius of 1.52 mm, and the optical fiber is fixed sufficiently firmly so that the compressive force in the radial direction (per unit length) of the optical fiber is relatively small. Transmission loss increases when the optical fiber is locally compressed in the radial direction, but since the above-mentioned method is used, no local force is applied and the increase in loss can be avoided.
こうして固定台６４と押え部材６５とで光フア
イバ５１，５２を固定すると、第６図に示すよう
に、光フアイバ５１，５２の端部が投光素子６
１、受光素子６２の中心において対接し、効率の
よい光結合が達成できる。しかも、光フアイバ用
の特別のコネクタ等を用いていないため、光フア
イバ５１，５２の端部はカツタ等で切断した状態
でよい。光フアイバ５１，５２としてプラスチツ
ク製のものを使用すれば、鋭利な刃物で切断した
場合、その端部は光学研磨したものと大差ない性
能を示すからである。特に直径0.25mm程度の細径
のプラスチツクフアイバを数十本束ねたバンドル
フアイバの場合は、新品のカツタで切断した程度
で充分な特性が得られる。このように光フアイバ
５１，５２の端部はカツタ等で切断するだけでよ
いので、その長さを自由に調整することができ
る。 When the optical fibers 51 and 52 are fixed by the fixing base 64 and the holding member 65 in this way, the ends of the optical fibers 51 and 52 are attached to the light emitting element 6, as shown in FIG.
1. They face each other at the center of the light receiving element 62, and efficient optical coupling can be achieved. Furthermore, since no special connector for optical fibers is used, the ends of the optical fibers 51 and 52 may be cut with a cutter or the like. This is because if optical fibers 51 and 52 are made of plastic, when cut with a sharp knife, the end portions will exhibit the same performance as optically polished fibers. In particular, in the case of bundle fibers made by bundling dozens of plastic fibers with a diameter of about 0.25 mm, sufficient characteristics can be obtained by cutting them with a new cutter. In this way, the ends of the optical fibers 51 and 52 need only be cut with a cutter or the like, so the length can be freely adjusted.
第１図は従来のアンプ分離型光電スイツチの斜
視図、第２図は第１図の回路構成を示すブロツク
図、第３図は本発明の一実施例の斜視図、第４図
は第３図の回路構成を示すブロツク図、第５図は
第３図のアダプタ６の分解斜視図、第６図は同ア
ダプタ６の断面図である。
１……アンプユニツト、２……ソケツト、３…
…センサ部、４……検出物体、５……光フアイバ
ユニツト、６……アダプタ。
FIG. 1 is a perspective view of a conventional amplifier separation type photoelectric switch, FIG. 2 is a block diagram showing the circuit configuration of FIG. 1, FIG. 3 is a perspective view of an embodiment of the present invention, and FIG. 5 is an exploded perspective view of the adapter 6 shown in FIG. 3, and FIG. 6 is a sectional view of the adapter 6 shown in FIG. 1...Amplifier unit, 2...Socket, 3...
...Sensor section, 4...Detection object, 5...Optical fiber unit, 6...Adapter.
Claims (1)
る光フアイバを固定する固定部と、前記光電変換
素子に電気的に接続されるアンプユニツトが差し
込まれるソケツトのネジ端子に固着され前記光電
変換素子と固定部とを備えた基板とを有してなる
光フアイバ式光電スイツチのアダプタ。1. A photoelectric conversion element, a fixing part for fixing an optical fiber in contact with the photoelectric conversion element, and a fixing part for fixing an optical fiber that is in contact with the photoelectric conversion element, and a fixing part that is fixed to a screw terminal of a socket into which an amplifier unit electrically connected to the photoelectric conversion element is inserted. An adapter for an optical fiber type photoelectric switch, comprising a substrate having a fixing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18550380A JPS57109228A (en) | 1980-12-26 | 1980-12-26 | Optical fiber type photoelectric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18550380A JPS57109228A (en) | 1980-12-26 | 1980-12-26 | Optical fiber type photoelectric switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57109228A JPS57109228A (en) | 1982-07-07 |
| JPS6161492B2 true JPS6161492B2 (en) | 1986-12-25 |
Family
ID=16171909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18550380A Granted JPS57109228A (en) | 1980-12-26 | 1980-12-26 | Optical fiber type photoelectric switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57109228A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991016721A1 (en) * | 1990-04-18 | 1991-10-31 | Omron Corporation | Multiple connected photoelectric switch device |
| US5964855A (en) * | 1997-04-07 | 1999-10-12 | International Business Machines Corporation | Method and system for enabling nondisruptive live insertion and removal of feature cards in a computer system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5132852A (en) * | 1974-09-09 | 1976-03-19 | Toray Industries | SHIJONOSEIZOHOHO |
-
1980
- 1980-12-26 JP JP18550380A patent/JPS57109228A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5132852A (en) * | 1974-09-09 | 1976-03-19 | Toray Industries | SHIJONOSEIZOHOHO |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57109228A (en) | 1982-07-07 |
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