JPS6311674Y2 - - Google Patents
Info
- Publication number
- JPS6311674Y2 JPS6311674Y2 JP7457683U JP7457683U JPS6311674Y2 JP S6311674 Y2 JPS6311674 Y2 JP S6311674Y2 JP 7457683 U JP7457683 U JP 7457683U JP 7457683 U JP7457683 U JP 7457683U JP S6311674 Y2 JPS6311674 Y2 JP S6311674Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- fiber
- fiber bundle
- light
- detected
- 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
- 239000000835 fiber Substances 0.000 claims description 45
- 239000000126 substance Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は、光フアイバーを利用した微小磁性体
の検知センサーに関する。[Detailed Description of the Invention] The present invention relates to a sensor for detecting minute magnetic substances using optical fibers.
ホツチキスの針やクリツプ等の微小な鉄片等を
非接触でしかも連続的に検知する作業があるが、
鉄片が微小であるために検知が難しく、しかも鉄
片が見えない個所にある被検出物であるとその検
知は一層困難である。そこで微小な鉄片等を検知
する高精度な検知センサーが要求されていた。 There is work that involves detecting small pieces of iron such as staples and paper clips in a non-contact and continuous manner.
It is difficult to detect the iron piece because it is minute, and it is even more difficult to detect the object if the iron piece is located in a place where it cannot be seen. Therefore, there was a need for a highly accurate detection sensor that could detect minute pieces of iron.
本考案は上記の要求を満すことを目的とし、送
光用フアイバーと受光用フアイバーとより成るフ
アイバー束の先端に磁石を移動可能に配置し、通
常はフアイバー束の先端面に密着していて被検出
物である鉄片が前に位置したときに磁石は移動し
それによつて生じた磁石とフアイバー束との間隙
によつて送光用フアイバーから出た光が磁石に反
射して受光用フアイバーに入光し、それを受光素
子で感知することにより被検出物の検知を行なう
ようにしたことを特徴とする。 The purpose of this invention is to meet the above requirements, and a magnet is movably arranged at the tip of a fiber bundle consisting of a light transmitting fiber and a light receiving fiber, and is normally placed in close contact with the tip surface of the fiber bundle. When a piece of iron, which is the object to be detected, is positioned in front of it, the magnet moves, and the resulting gap between the magnet and the fiber bundle causes the light emitted from the transmitting fiber to be reflected by the magnet and onto the receiving fiber. It is characterized in that the object to be detected is detected by entering light and sensing it with a light receiving element.
以下に本考案の一実施例を図面に従つて説明す
る。第１図はフアイバー束の一例を示す側面図、
第２図は磁石がフアイバー束の端面に密着してい
る状態の側断面図、第３図は磁石が離れた状態の
側断面図であり、１は極めて細いフアイバー束を
示し、送光用フアイバー２と受光用フアイバー３
とで構成され先部では一体となり後端ではそれぞ
れに分かれ、送光用フアイバー２は光源４に対向
し、受光用フアイバー３は受光素子５に対向して
いる。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an example of a fiber bundle;
Figure 2 is a side sectional view of the state in which the magnet is in close contact with the end face of the fiber bundle, and Figure 3 is a side sectional view of the state in which the magnet is separated. 2 and light receiving fiber 3
The light-transmitting fiber 2 faces the light source 4, and the light-receiving fiber 3 faces the light-receiving element 5.
６はこのフアイバー束１の少なくとも先部を収
納する合成樹脂等の非磁性体製のパイプ状のケー
スであり、外周にネジ６ａが刻まれ、また先端に
はストツパを兼ねた閉止面７が設けてあり、閉止
面７と間隔をあけてフアイバー束１の先端を位置
させて作動域８を形成してある。 Reference numeral 6 denotes a pipe-shaped case made of a non-magnetic material such as synthetic resin that houses at least the tip of the fiber bundle 1, and a screw 6a is carved on the outer periphery, and a closing surface 7 that also serves as a stopper is provided at the tip. The tip of the fiber bundle 1 is positioned at a distance from the closing surface 7 to form an operating region 8.
９は上記作動域８内に移動可能に納めた極小径
の磁石であり、この磁石９が閉止面７に当つたと
きに磁石９の後面とフアイバー束１端面との間に
間隔Ｗがあき、この間隔Ｗは、フアイバー束１の
送光用フアイバー２から出た光が磁石９に反射し
て受光用フアイバー３に入光することができる間
隔となつている。 Reference numeral 9 denotes an extremely small diameter magnet that is movably housed within the working area 8, and when this magnet 9 hits the closing surface 7, a gap W is created between the rear surface of the magnet 9 and the end surface of the fiber bundle 1. This interval W is such that the light emitted from the light transmitting fiber 2 of the fiber bundle 1 is reflected by the magnet 9 and enters the light receiving fiber 3.
１０は磁性体製のナツトであり上記ネジ６ａに
よつて移動可能になつているもので、これは、こ
のナツト１０の位置を調節することによつて磁石
９をフアイバー束１の端面に引きつけるためで、
このとき磁石９は極めて弱い力でフアイバー束１
端面に触れているように調整されるものでその接
触力は０に近ければ近い程よいものであるが、上
記磁石９は極めて小さいものであるために質量は
小さく、クリツプやホツチキスの針等の被検出物
に対して極めて敏感に反応するためにそれ程０に
近づけなくても検知は可能である。 Reference numeral 10 denotes a nut made of a magnetic material, which is movable by the screw 6a. This is because adjusting the position of this nut 10 attracts the magnet 9 to the end face of the fiber bundle 1. in,
At this time, the magnet 9 applies an extremely weak force to the fiber bundle 1.
The magnet 9 is adjusted so that it is in contact with the end surface, and the closer the contact force is to 0, the better. However, since the magnet 9 is extremely small, its mass is small, and it is difficult to be covered by clips, staplers, etc. Since it reacts extremely sensitively to the detection object, detection is possible even if the temperature is not very close to zero.
以上の構成によると、ナツト１０をネジ６ａに
よつて位置調整することによつて磁石９をフアイ
バー束１の端面に軽く接触させておく。この状態
で連続して流れる被検出物に対向させる。 According to the above structure, the magnet 9 is brought into light contact with the end surface of the fiber bundle 1 by adjusting the position of the nut 10 with the screw 6a. In this state, it is made to face the continuously flowing object to be detected.
そこで、例えばクリツプやホツチキスの針等の
磁性体である被検出物１１が検知センサーの前を
通ると、磁石９は第３図に示す如く被検出物１１
に近づいて前方に移動して閉止面７に当たり、磁
石９とフアイバー束１との間には間隔Ｗが形成さ
れる。すると送光用フアイバー２から出た光は磁
石９の裏面で反射してその反射光を受光用フアイ
バー３によつて受光して受光素子５で検知を行な
う。 Therefore, when a detected object 11, which is a magnetic material such as a paper clip or a stapler, passes in front of the detection sensor, the magnet 9 moves toward the detected object 11 as shown in FIG.
The magnet 9 moves forward and hits the closing surface 7, and a distance W is formed between the magnet 9 and the fiber bundle 1. Then, the light emitted from the light transmitting fiber 2 is reflected by the back surface of the magnet 9, and the reflected light is received by the light receiving fiber 3 and detected by the light receiving element 5.
被検出物１１が通過をすると、磁石９はナツト
１０に近づいて戻つてフアイバー束１端面に当接
して間隔Ｗは無くなり送光用フアイバー２から出
た光は受光用フアイバー３には入光しない状態と
なる。 When the object 11 to be detected passes, the magnet 9 approaches the nut 10 and returns to contact the end face of the fiber bundle 1, so that the interval W disappears and the light emitted from the light transmitting fiber 2 does not enter the light receiving fiber 3. state.
以上の構成，作用を有する本考案によると、ク
リツプやホツチキスの針等の微小な磁性体性の被
検出物の検知にあたつて、きわめて小さい磁石を
送光用フアイバーと受光用フアイバーとより成る
フアイバー束の端面に磁力を利用して非常に弱い
力で当接させておき、この磁石に被検出物が対向
したときに磁石が移動してそれによつて生じた磁
石とフアイバー束との間の間隔を利用して送光用
フアイバーから出た光の反射光を受光用フアイバ
ーで受けることにより被検出物の検知を行なうよ
うにしたことにより、連続して流れている極めて
小さい被検出物の検知を非接触で検知することが
可能となる。 According to the present invention having the above-described structure and operation, in order to detect minute magnetic objects such as paper clips and staplers, an extremely small magnet is made up of a light-transmitting fiber and a light-receiving fiber. The end face of the fiber bundle is brought into contact with a very weak force using magnetic force, and when the object to be detected faces this magnet, the magnet moves and the resulting gap between the magnet and the fiber bundle is The object to be detected is detected by using the spacing to receive the reflected light emitted from the transmitting fiber with the receiving fiber, making it possible to detect extremely small objects that are continuously flowing. can be detected without contact.
第１図はフアイバー束の１例を示す側面図、第
２図は磁石がフアイバー束の端面に密着している
状態の側断面図、第３図は磁石がフアイバー束か
ら離れた状態を示す側断面図である。
１……フアイバー束、２……送光用フアイバ
ー、３……受光用フアイバー、６……ケース、９
……磁石、１０……ナツト。
Figure 1 is a side view showing an example of a fiber bundle, Figure 2 is a side sectional view with the magnet in close contact with the end face of the fiber bundle, and Figure 3 is a side view with the magnet separated from the fiber bundle. FIG. 1...Fiber bundle, 2...Light transmitting fiber, 3...Light receiving fiber, 6...Case, 9
...Magnet, 10...Natsuto.
Claims (1)
を受光素子に対向させた受光用フアイバーの両フ
アイバーの少なくとも先部を一本に束ねてフアイ
バー束とし、このフアイバー束の先部をケース内
に納め、このケースの先端に磁性体を移動可能に
取付けると共にこのケース内の上記フアイバー束
の端面と磁性体との間に磁石を移動可能に配置し
たことを特徴とする微小磁性体の検知センサー。 At least the tips of both fibers are bundled into one fiber bundle, including a light transmitting fiber with its rear end facing the light source and a light receiving fiber with its rear end facing the light receiving element, and the tips of this fiber bundle are inserted into the case. A sensor for detecting a minute magnetic substance, characterized in that a magnetic substance is movably attached to the tip of the case, and a magnet is movably arranged between the end face of the fiber bundle in the case and the magnetic substance. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7457683U JPS59180692U (en) | 1983-05-20 | 1983-05-20 | Micro magnetic material detection sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7457683U JPS59180692U (en) | 1983-05-20 | 1983-05-20 | Micro magnetic material detection sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59180692U JPS59180692U (en) | 1984-12-03 |
| JPS6311674Y2 true JPS6311674Y2 (en) | 1988-04-05 |
Family
ID=30204665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7457683U Granted JPS59180692U (en) | 1983-05-20 | 1983-05-20 | Micro magnetic material detection sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59180692U (en) |
-
1983
- 1983-05-20 JP JP7457683U patent/JPS59180692U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59180692U (en) | 1984-12-03 |
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