JPS587213B2 - Hanshiyashiki Koden Switch - Google Patents
Hanshiyashiki Koden SwitchInfo
- Publication number
- JPS587213B2 JPS587213B2 JP49105724A JP10572474A JPS587213B2 JP S587213 B2 JPS587213 B2 JP S587213B2 JP 49105724 A JP49105724 A JP 49105724A JP 10572474 A JP10572474 A JP 10572474A JP S587213 B2 JPS587213 B2 JP S587213B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- detector
- housing
- opening
- emitter
- 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
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Description
【発明の詳細な説明】
本発明は、投光部と受光部とを一つの筐体内に装設した
検知器を設け、この検知器と検出物とを対向させた反射
式光電スイッチに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reflective photoelectric switch in which a detector is provided with a light emitting part and a light receiving part installed in a single housing, and the detector and an object to be detected face each other. be.
第３図は検知器と検出物とが対向して取付けられている
場合において、検知器と検出物との距離と受光量との関
係を示す図であるが、この図において、Ａは検知器と反
射率の良い検出物とを対向させた場合の距離特性曲線を
表わしており、Ｂは検知器と反射率の悪い検出物とを対
向させた場合の距離特性曲線を表わしている。Fig. 3 is a diagram showing the relationship between the distance between the detector and the detected object and the amount of light received when the detector and the detected object are installed facing each other. B represents the distance characteristic curve when the detector and the detected object with good reflectivity are opposed to each other, and B represents the distance characteristic curve when the detector and the detected object with poor reflectance are opposed to each other.
Ｘ線を検知器の出力回路が動作するレベルを表わす直線
とすれば同じ受光量に対してＡ線とＸ線との交点イおよ
びＢ線とＸ線との交点口の二点において検知器の出力回
路が動作することになる。If the X-ray is a straight line representing the level at which the output circuit of the detector operates, then for the same amount of received light, the detector will The output circuit will now operate.
換言すれば、検知器と反射率の良い検出物を或間隔をお
いて対向設置した状態において、その両者の間を、報知
器に近接して反射率の悪い検出物が通過した場合でも検
知器の出力回路が動作して誤報を発生することがある。In other words, when a detector and an object with good reflectance are placed facing each other with a certain distance between them, even if an object with poor reflectance passes close to the alarm, the detector will still The output circuit may operate and generate false alarms.
本発明はこのような問題点にかんがみ、反射率の良い検
出物と、反射率の悪い検出物とを識別できるようにした
反射式光電スイッチを経済的に得んとするものである。In view of these problems, the present invention aims to economically provide a reflective photoelectric switch that can distinguish between a detected object with good reflectance and a detected object with poor reflectance.
すなわち、本発明は、一つの筐体内に投光部と受光部と
を収納装着し、投光部からの投光による検出物の反射光
を受光して報知動作を行なう検知器を有する反射式光電
スイッチにおいて、検知器の筐体に設けた受光部開口部
の径を投光部開口部の径より小さくするとともに投光部
と受光部とを筐体と一体に形成した蔽壁で仕切るように
し、投光部開口に対向して投光素子を受光部開口に対応
して受光素子を一枚の板状体に取り付けて配置したこと
を特徴とするものである。That is, the present invention provides a reflective type device that has a light emitting section and a light receiving section housed in one housing, and has a detector that performs a notification operation by receiving reflected light from an object to be detected by light emitted from the light emitting section. In a photoelectric switch, the diameter of the light-receiving part opening provided in the detector housing is made smaller than the diameter of the light-emitting part opening, and the light-emitting part and the light-receiving part are separated by a shielding wall formed integrally with the housing. The present invention is characterized in that a light projecting element faces the light projecting part opening, and a light receiving element is attached to a single plate-shaped body in correspondence with the light receiving part opening.
以下図面を参照しながら本発明に係る反射式光電スイッ
チの実施例を説明する。Embodiments of the reflective photoelectric switch according to the present invention will be described below with reference to the drawings.
１は検知器の筐体であって、内部に投光部２と受光部３
とを設けてこれらの動作回路部４を装着するものである
。Reference numeral 1 denotes a housing of the detector, inside which a light emitter 2 and a light receiver 3 are installed.
These operating circuit sections 4 are mounted by providing the following.
５は投光部２のたとえば発光ダイオードのような投光素
子、６は受光部３のたとえば硫化カドミウムのような受
光素子であって、その投光素子５の前方における筺体１
に投光部開口部γを設けるとともにその受光素子６の前
方における筐体１に受光部開口部８を設けるもので、受
光部開口部８の内側において受光素子５の周囲にしや蔽
壁９を設けるのである。5 is a light emitting element such as a light emitting diode of the light emitting part 2; 6 is a light receiving element such as cadmium sulfide of the light receiving part 3, and the housing 1 is located in front of the light emitting element 5.
A light emitting part opening γ is provided in the housing 1 in front of the light receiving element 6, and a light receiving part opening 8 is provided in the housing 1 in front of the light receiving part 6. A shielding wall 9 is provided around the light receiving element 5 inside the light receiving part opening 8. It is established.
１０は検知器に対向してその前面に設置された検出物で
ある。10 is a detection object placed in front of the detector, facing the detector.
而して受光部開口部８の径ｄを投光部開口部１の径Ｄよ
り小さく形成するのである。Thus, the diameter d of the light receiving section opening 8 is made smaller than the diameter D of the light projecting section opening 1.
本発明に係る反射式光電スイッチは前記のように構成し
てなるもので、次にその動作状態について述べる。The reflective photoelectric switch according to the present invention is constructed as described above, and its operating state will now be described.
第２図において、投光素子５からの投光は、検出物１０
を照射するのであるが、その検出物１０の面上における
光を反射させる有効な部分Ｈの面からの反射光が受光素
子６に入光するのである。In FIG. 2, the light emitted from the light emitting element 5 is
The reflected light from the surface of the effective light-reflecting portion H on the surface of the detection object 10 enters the light receiving element 6.
第３図において、Ｃは本発明に係る反射式光電スイッチ
において、検知器と反射率の良い検出物とを対向させた
場合の距離特性曲線を示しておりＤは同上において、検
知器と反射率の悪い検出物とを対向させた場合の距離特
性曲線を示しておる。In FIG. 3, C shows the distance characteristic curve when the detector and the detected object with good reflectivity are faced to each other in the reflective photoelectric switch according to the present invention, and D shows the distance characteristic curve when the detector and the detected object with good reflectance face each other in the reflective photoelectric switch according to the present invention. This figure shows the distance characteristic curve when a detection object with poor quality is faced to the object.
本発明に係る光電スイッチは一つの筐体内に投光部と受
光部とを収納装着し、投光部からの投光による検出物の
反射光を受光して報知動作を行なう検知器を有する反射
式光電スイッチにおいて、検知器の筐体に設けた受光部
開口部の径を投光部開口部の径より小さくしたから、受
光部に鋭い指向性をもたせて検知面に近接して通過した
り、存在するときに入る受光量を抑制することにより、
たとえば白紙のように乱反射するが、比較的反射率の大
きい物体が検知面に接近した場合でもそのときにはいる
受光量と、所定の場所に設置した反射物体からの受光量
とを十分に識別して、検知面に近接して通過または存在
する物体に対しても確実に検出動作する特徴がある。The photoelectric switch according to the present invention has a light emitting part and a light receiving part housed in one housing, and has a detector that performs an alarm operation by receiving the reflected light of an object to be detected by the light emitted from the light emitting part. In the type photoelectric switch, the diameter of the opening of the light receiving part provided in the detector housing is made smaller than the diameter of the opening of the light emitting part, so that the light receiving part has sharp directivity and can pass close to the detection surface. , by suppressing the amount of light received when it is present,
For example, even if an object with a relatively high reflectance approaches the detection surface, although it reflects diffusely like a blank sheet of paper, the amount of light received at that time and the amount of light received from a reflective object placed at a predetermined location cannot be sufficiently distinguished. , it has the feature of reliably detecting objects that pass or exist close to the detection surface.
また蔽壁で投光部と受光部とを仕切るようにしているの
で一つの筐体内に投光部と受光部とを収納装着している
にもかかわらず投光部からの投光が直接受光部に入らな
い。In addition, since the light emitter and light receiver are separated by a shielding wall, the light emitted from the light emitter is directly received even though the light emitter and the light receiver are housed in one housing. I won't join the club.
さらには、受光部の開口部の径を小さくして受光量を絞
る構造としたので、投光素子５と受光素子６とをプリン
ト板のような板状の取付け部に取付けることが出来るの
で構造が簡単となる等の効果がある。Furthermore, since the diameter of the opening of the light receiving section is reduced to reduce the amount of light received, the light emitting element 5 and the light receiving element 6 can be attached to a plate-shaped mounting part such as a printed board. This has the effect of simplifying the process.
第１図は本発明に係る反射弐九電スイッチの断面側面図
、第２図は同上の動作状態図、第３図は検知器と検出物
との距離と、受光量との関係を示す図。
１は検知器の筐体、２は投光部、３は受光部、４は動作
回路部、５は投光素子、６は受光素子、７は投光部開口
部、８は受光部開口部、９はしや蔽壁、１０は検出物、
ｄは受光部開口部の径、Ｄは投光部開口部の径。Fig. 1 is a cross-sectional side view of the reflective Ni-Kyuden switch according to the present invention, Fig. 2 is a diagram showing the operating state of the same as above, and Fig. 3 is a diagram showing the relationship between the distance between the detector and the detected object and the amount of received light. . 1 is a housing of the detector, 2 is a light emitter, 3 is a light receiver, 4 is an operating circuit, 5 is a light emitter, 6 is a light receiver, 7 is an opening in the light emitter, and 8 is an opening in the light receiver. , 9 is a shield wall, 10 is a detection object,
d is the diameter of the light-receiving section opening, and D is the diameter of the light-emitting section opening.
Claims (1)
光部からの投光による検出物の反射光を受光して報知動
作を行う検知器を有する反射式光電スイッチにおいて、
検知器の筐体に設けた受光部開口部の径を投光部開口部
の径より小さくするとともに投光部と受光部とを筐体と
一体に形成した蔽壁で仕切るようにし、投光部開口に対
向して投光素子を受光部開口に対応して受光素子を一枚
の板状体に取り付けて配置したことを特徴とする反射式
光電スイッチ。1. A reflective photoelectric switch in which a light emitter and a light receiver are housed and mounted in a single housing and has a detector that performs an alarm operation by receiving reflected light from an object to be detected by light emitted from the light emitter,
The diameter of the opening of the light-receiving part provided in the detector housing is made smaller than the diameter of the opening of the light-emitter part, and the emitter part and the light-receiving part are separated by a shielding wall formed integrally with the housing. 1. A reflective photoelectric switch characterized in that a light projecting element faces an aperture in the light receiving part, and a light receiving element is attached to a plate-like body in correspondence with an aperture in the light receiving part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49105724A JPS587213B2 (en) | 1974-09-12 | 1974-09-12 | Hanshiyashiki Koden Switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP49105724A JPS587213B2 (en) | 1974-09-12 | 1974-09-12 | Hanshiyashiki Koden Switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5131877A JPS5131877A (en) | 1976-03-18 |
| JPS587213B2 true JPS587213B2 (en) | 1983-02-08 |
Family
ID=14415253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49105724A Expired JPS587213B2 (en) | 1974-09-12 | 1974-09-12 | Hanshiyashiki Koden Switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS587213B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48107080U (en) * | 1972-03-17 | 1973-12-12 |
-
1974
- 1974-09-12 JP JP49105724A patent/JPS587213B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5131877A (en) | 1976-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2786030B2 (en) | Photoelectric sensor floodlight | |
| US4912316A (en) | Detecting apparatus with resinous body | |
| EP3961248A1 (en) | Terminal | |
| EP0314646B1 (en) | A detector device | |
| US5670947A (en) | Light scattering smoke sensor | |
| US6642505B1 (en) | Reflection-type optical sensor | |
| EP0105528A3 (en) | Reflection light barrier | |
| US4754150A (en) | Photoelectric smoke detector | |
| CN210865019U (en) | Smoke detection device with light guide scattering structure | |
| DE3850027D1 (en) | Retro-reflective sensor. | |
| US3968379A (en) | Photocell smoke detector | |
| JPS587213B2 (en) | Hanshiyashiki Koden Switch | |
| JPS6039580A (en) | paper detection device | |
| JPS59180450A (en) | Reflection photoelectric detection system | |
| EP0175940B1 (en) | Photoelectric smoke detector | |
| CN210574193U (en) | A smoke detector maze and smoke detector | |
| JP2992260B2 (en) | Photoelectric key operation array | |
| JP3278921B2 (en) | Photoelectric switch | |
| JP2739493B2 (en) | Diffuse reflection type photoelectric switch | |
| JP2506305Y2 (en) | Scattered light smoke detector | |
| CN219285807U (en) | Smoke detector | |
| JPH07120477B2 (en) | Scattered light smoke detector | |
| JPH033193B2 (en) | ||
| JPH07103892A (en) | Photoelectric smoke detector | |
| JPH0650075Y2 (en) | Scattered light smoke detector |