JPS5952781A - Metal detector - Google Patents
Metal detectorInfo
- Publication number
- JPS5952781A JPS5952781A JP57164332A JP16433282A JPS5952781A JP S5952781 A JPS5952781 A JP S5952781A JP 57164332 A JP57164332 A JP 57164332A JP 16433282 A JP16433282 A JP 16433282A JP S5952781 A JPS5952781 A JP S5952781A
- Authority
- JP
- Japan
- Prior art keywords
- sensitivity
- magnetic
- bobbin
- magnetic sensor
- metal detector
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は一対のコイルを差動接続し地磁気等の広域的磁
界を相殺し、局部的な磁界変化を検出して、鉄、コバル
ト、ニッケル等の強磁性体金属を探知する金属探知器に
関する。Detailed Description of the Invention The present invention uses a pair of coils that are differentially connected to cancel out a wide-area magnetic field such as the earth's magnetism, detect local changes in the magnetic field, and detect ferromagnetic metals such as iron, cobalt, and nickel. Regarding metal detectors.
従来のこの種の金属探知器は、ボビン上に検出コイルを
巻き、そのボビン内に例えばセラミック製チューブの中
に収納された磁気コアーを挿入してなる磁気センサを一
対設けて差動接続する構造であった。従って、巻線のバ
ラツキ、コアー〇断面積１．コアーとコイルの位置関係
などにより磁気センサの感度が変化することになるため
、従来は感度が同一の磁気センサを選別して使用してい
たから、選別管理作業が煩雑になる欠点があった。Conventional metal detectors of this type have a structure in which a detection coil is wound on a bobbin, and a pair of magnetic sensors, each consisting of a magnetic core housed in a ceramic tube, for example, is inserted into the bobbin and differentially connected. Met. Therefore, variations in winding, core cross-sectional area 1. Since the sensitivity of the magnetic sensor changes depending on the positional relationship between the core and the coil, conventionally magnetic sensors with the same sensitivity have been selected and used, which has the disadvantage of complicating the selection management work.
本発明は上記欠点を改良するためになされたものであっ
て、ネジの回動等の簡単な操作により磁気センサの感度
調節ができる金属探知器を提供することにある。The present invention has been made in order to improve the above-mentioned drawbacks, and an object of the present invention is to provide a metal detector in which the sensitivity of the magnetic sensor can be adjusted by a simple operation such as turning a screw.
図面は本発明実施例の正面図を示す。ボビン１はセラミ
ック等の非金属材料よりなる真直なパイプであり、その
両端にメネジ６Ａ、６Ｂが刻設された調節部２Ａ、２Ｂ
が固着されている。ボビン１の両端部には検出コイル３
Ａ、３Ｂが巻かれ、ボビン１内には中央部のスペーサ４
を挟んで左右両端部に磁気コアー５Ａ、５Ｂが挿入され
、さらに、磁気コアーと同−又は類似の磁性材料から成
り、上記メネジ６Ａ、６Ｂに嵌り合うオネジを備えた調
節ネジ７Ａ、７Ｂの先端がボビン１の端部に挿入されて
磁気コアー５Ａ、５Ｂの両端面を挟持している。従って
、調節ネジ７Ａ、７Ｂの調節により一方の磁気センサの
感度が増大するときは他方のものが減少するから両セン
サの感度を容易に同一に調節することができる。The drawing shows a front view of an embodiment of the invention. The bobbin 1 is a straight pipe made of a non-metallic material such as ceramic, and the adjustment parts 2A and 2B have female threads 6A and 6B carved at both ends.
is fixed. Detection coils 3 are installed at both ends of the bobbin 1.
A and 3B are wound, and inside the bobbin 1 there is a spacer 4 in the center.
Magnetic cores 5A, 5B are inserted into the left and right ends of the magnetic cores, and the tips of adjusting screws 7A, 7B are made of the same or similar magnetic material as the magnetic cores and have male screws that fit into the female screws 6A, 6B. is inserted into the end of the bobbin 1 and holds both end surfaces of the magnetic cores 5A and 5B. Therefore, when the sensitivity of one magnetic sensor is increased by adjusting the adjustment screws 7A and 7B, the sensitivity of the other magnetic sensor is decreased, so that the sensitivity of both sensors can be easily adjusted to be the same.
本発明の他の実施例として、左右両磁気コアーの間隔を
固定しておき、検出用コイルの位置を磁気コアーに対し
て調節自在にしてもよい。As another embodiment of the present invention, the distance between the left and right magnetic cores may be fixed, and the position of the detection coil may be freely adjusted with respect to the magnetic cores.
本発明によれば、一対の磁気センサの感度を容易に調節
できるから、コイルの巻線のバラツキ、コアーの大きさ
及び特性のバラツキ、コイル又はコアーの取付角度の偏
り等を調節により吸収することができ、製造工程が簡単
化され、且つ正確に感度バランスのとれた金属探知器を
製作することができる。According to the present invention, since the sensitivity of the pair of magnetic sensors can be easily adjusted, variations in the winding of the coil, variations in the size and characteristics of the core, deviations in the mounting angle of the coil or core, etc. can be absorbed by adjustment. The manufacturing process is simplified, and a metal detector with accurately balanced sensitivity can be manufactured.
図面は本発明実施例を示す正面図の縦断面図である。
１−ボビン ２Ａ、２Ｂ−調節部
３Ａ、３Ｂ−検出コイル
５Ａ、５Ｂ−一磁気コアー
７Ａ、７Ｂ−調節ネジ
手続補正書動式）
％式％
１、事件の表示
昭和５７年 特許願 第１６４３３２号２、発明の名称
金属探知器
３、補正をする者
事件との関係 特許出願人
住所 京都市中京区河原町通二条下ルーツ船人町３７
８番地
氏名 （１９９）株式会社島津製作所代表者 横地
節男
４、代理人
住所 大阪市北区兎我野町１５番１３号５、補正命令
の日付 昭和５８年２月２２日（発送日）６、補正の
対象 願書及び明細書The drawing is a vertical sectional view of a front view showing an embodiment of the present invention. 1 - Bobbin 2A, 2B - Adjustment section 3A, 3B - Detection coil 5A, 5B - Magnetic core 7A, 7B - Adjustment screw procedure correction written type) % type % 1. Indication of incident 1982 Patent application No. 164332 2. Name of the invention Metal detector 3. Relationship with the person making the amendment Patent applicant address 37 Roots Funato-cho, Kawaramachi-dori Nijo-shita, Nakagyo-ku, Kyoto City
Address 8 Name (199) Shimadzu Corporation Representative Setsuo Yokochi 4 Agent address 15-13-5 Usagano-cho, Kita-ku, Osaka City Date of amendment order February 22, 1980 (shipment date) 6 Target application and specification
Claims (1)
検出用コイルを設けるとともに、その両端部の軸心部の
所定位置に磁気コアーを挿入保持し、上記検出用コイル
と上記磁気コアーの相体的位置関係を調節する装置を設
けた磁気センサを有することを特徴とする金属探知器。A detection coil is provided on the outer periphery of both ends of a straight bobbin made of a rigid body made of non-metallic material, and a magnetic core is inserted and held at a predetermined position in the axial center of both ends. A metal detector characterized by having a magnetic sensor provided with a device for adjusting physical positional relationships.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57164332A JPS5952781A (en) | 1982-09-20 | 1982-09-20 | Metal detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57164332A JPS5952781A (en) | 1982-09-20 | 1982-09-20 | Metal detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5952781A true JPS5952781A (en) | 1984-03-27 |
Family
ID=15791156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57164332A Pending JPS5952781A (en) | 1982-09-20 | 1982-09-20 | Metal detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5952781A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6378282U (en) * | 1986-11-10 | 1988-05-24 | ||
| JP3032384U (en) * | 1996-06-13 | 1996-12-17 | 株式会社東京センサ | Object contact force detector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329149A (en) * | 1976-08-31 | 1978-03-18 | Omron Tateisi Electronics Co | Metal detector |
| JPS5593078A (en) * | 1979-01-01 | 1980-07-15 | Nippon Signal Co Ltd:The | Wheel detector |
-
1982
- 1982-09-20 JP JP57164332A patent/JPS5952781A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329149A (en) * | 1976-08-31 | 1978-03-18 | Omron Tateisi Electronics Co | Metal detector |
| JPS5593078A (en) * | 1979-01-01 | 1980-07-15 | Nippon Signal Co Ltd:The | Wheel detector |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6378282U (en) * | 1986-11-10 | 1988-05-24 | ||
| JPH0528538Y2 (en) * | 1986-11-10 | 1993-07-22 | ||
| JP3032384U (en) * | 1996-06-13 | 1996-12-17 | 株式会社東京センサ | Object contact force detector |
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