JP2578140Y2 - Pickup sensor - Google Patents
Pickup sensorInfo
- Publication number
- JP2578140Y2 JP2578140Y2 JP1992041240U JP4124092U JP2578140Y2 JP 2578140 Y2 JP2578140 Y2 JP 2578140Y2 JP 1992041240 U JP1992041240 U JP 1992041240U JP 4124092 U JP4124092 U JP 4124092U JP 2578140 Y2 JP2578140 Y2 JP 2578140Y2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- cylindrical core
- pickup sensor
- flange portion
- pair
- 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 - Lifetime
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、近接する永久磁石等の
磁石を検出するためのピックアップセンサに関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pickup sensor for detecting an adjacent magnet such as a permanent magnet.
【０００２】[0002]
【従来の技術】従来、この種のピックアップセンサは、
図４及び図５を参照して、軸方向の両端に円盤状の鍔部
及び軸方向の周りに巻線を施すための円筒状の巻線部を
持ち焼結された高透磁率酸化物磁性材料からなり絶縁被
膜１１ａが施されている円筒コア１１と、巻線部に巻回
された巻線１２と、巻線１２と接続され下方に伸びる１
対の出力信号を取り出すための端子ピン１３と、端子ピ
ン１３を貫通させて固着する端子ベース１６と、これら
円筒コア１１、巻線１２、端子ピン１３及び端子ベース
１６を収納する保護チューブ１５を備えている。2. Description of the Related Art Conventionally, this type of pickup sensor has
Referring to FIGS. 4 and 5, sintered high-permeability oxide magnet having a disk-shaped flange at both ends in the axial direction and a cylindrical winding for applying a winding around the axial direction. A cylindrical core 11 made of a material and provided with an insulating coating 11a; a winding 12 wound around a winding portion;
A terminal pin 13 for extracting a pair of output signals, a terminal base 16 through which the terminal pin 13 is penetrated and fixed, and a protective tube 15 for accommodating the cylindrical core 11, the winding 12, the terminal pin 13 and the terminal base 16 are provided. Have.
【０００３】使用に際しては、被検出体としての磁石１
９をピックアップセンサの円筒コア１１の上方の鍔部の
面、即ち、センサ面１８に平行に矢印のように移動させ
ることにより、端子ピン１３に生じる出力信号により検
出される。In use, the magnet 1 as the object to be detected is used.
9 is detected by an output signal generated at the terminal pin 13 by moving the pickup sensor 9 parallel to the surface of the flange portion above the cylindrical core 11 of the pickup sensor, that is, the sensor surface 18 as indicated by an arrow.
【０００４】尚、円筒コア１１の軸方向の鍔部１１−１
と１１−２との厚みｔ１とｔ２とは同一になるように成
形されている。The axial flange 11-1 of the cylindrical core 11 is provided.
It is shaped to be identical to the thickness t 1 and t 2 between 11-2.
【０００５】[0005]
【考案が解決しようとする課題】しかしながら、従来の
ピックアップセンサでは、上述した被検出体の磁石とピ
ックアップセンサとの検出距離ｌ（エル）及び出力信号
の大きさに限界があるという欠点があった。However, the conventional pickup sensor has a drawback that the detection distance l (ell) between the magnet of the object to be detected and the pickup sensor and the magnitude of the output signal are limited. .
【０００６】そこで、本考案の技術的課題は、検出距離
及び出力信号のより大きいピックアップセンサを得るこ
とにある。Accordingly, a technical problem of the present invention is to obtain a pickup sensor having a larger detection distance and a larger output signal.
【０００７】[0007]
【課題を解決するための手段】本考案によれば、軸方向
の周りに巻線を巻回した円筒部と両端に予め定められた
厚みを持つ一対の鍔部とを持つ磁性材から成る円筒コア
と、該巻線の両端に夫々接続され一方の鍔部を介して前
記軸方向の一方に伸びる一対の出力用端子ピンと、該一
対の出力用端子ピンを支持する端子ベースとを備え、前
記円筒コアの他方の鍔部に近接する磁石を前記一対の出
力用端子ピンに生じる出力信号により検出するピックア
ップセンサにおいて、前記円筒コアは前記一方の鍔部の
軸方向の厚みを前記他方の鍔部の軸方向の厚みより大き
くし、前記円筒コアの前記一方の鍔部は前記円筒コアと
一体で前記他方の鍔部の同じ厚みに構成されたフランジ
部分と、前記円筒コアの透磁率より高い磁性材から成り
該フランジ部分に接合固定された磁性板とから成ること
を特徴とするピックアップセンサが得られる。According to the present invention, a cylinder made of a magnetic material having a cylindrical portion having a winding wound around an axial direction and a pair of flange portions having a predetermined thickness at both ends. A core, a pair of output terminal pins connected to both ends of the winding and extending in the axial direction via one flange portion, and a terminal base supporting the pair of output terminal pins, In a pickup sensor for detecting a magnet approaching the other flange portion of the cylindrical core by an output signal generated at the pair of output terminal pins, the cylindrical core may have an axial thickness of the one flange portion and the other flange portion. Larger than the axial thickness of the cylindrical core, the one flange portion of the cylindrical core and the cylindrical core
A flange integrally formed to have the same thickness of the other flange.
And a magnetic material having a magnetic permeability higher than the magnetic permeability of the cylindrical core.
A pickup sensor comprising a magnetic plate bonded and fixed to the flange portion is obtained.
【０００８】[0008]
【０００９】[0009]
【実施例】本考案の一実施例によるピックアップセンサ
を図面を用いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pickup sensor according to an embodiment of the present invention will be described with reference to the drawings.
【００１０】図１を参照して、このピックアップセンサ
において、図３の従来例と同じものには同一参照符号を
付して示すが、従来と異なる点を以下述べる。Referring to FIG. 1, in this pickup sensor, the same components as those in the conventional example shown in FIG. 3 are denoted by the same reference numerals, and the points different from the conventional one will be described below.
【００１１】このピックアップセンサはセンサ面１８を
持つ鍔部２１−１と他方の側の鍔部２１−２とを持つ円
筒コア２１を備えている。鍔部２１−１と２１−２とは
厚みがｔ２＞ｔ１の条件を満足するように形成され、従
来例の端子ピン１３より長い端子ピン２３が用られてい
る。円筒コア２１に巻回されたコイルの両端として図示
されている端子ピン２３はｔ２を持つ鍔部２１−２及び
端子ベース１６を貫通して固着される。The pickup sensor has a cylindrical core 21 having a flange 21-1 having a sensor surface 18 and a flange 21-2 on the other side. The flange portion 21-1 and 21-2 are formed so as to have a thickness that satisfies the condition of t 2> t 1, and long terminal pins 23 from the terminal pin 13 of the conventional example is use. Terminal pins 23 are shown as both ends of the cylindrical core 21 wound on the coil is fixed through the flange portion 21-2 and the terminal base 16 with t 2.
【００１２】また、図２の他の実施例では、円筒コア２
１´においてｔ２を持つ鍔部２１´−２は、厚みｔ１と
同じ厚みのフランジ部分である鍔部２１´−２と、厚み
ｔ１より厚い部分として円筒コア２１´の透磁率より高
い磁性材からなる磁性板、即ち、円柱状のバックコア２
７とから成り、このバックコア２７を前記フランジ部分
の鍔部２１´−２と端子ベース１６とに接合固定するよ
うに設けている。Further, in another embodiment shown in FIG.
The flange portion 21 '-2 with t 2 in 1', the flange portion 21 '-2 is a flange portion of the same thickness as the thickness t 1, higher than the permeability of the cylinder core 21' as a thick portion than the thickness t 1 A magnetic plate made of a magnetic material, that is, a cylindrical back core 2
The back core 27 is provided so as to be joined and fixed to the flange portion 21 ′-2 of the flange portion and the terminal base 16.
【００１３】鍔部の厚み比ｔ２／ｔ１を１より大きくし
た種々のピックアップセンサについて、その出力電圧Ｖ
ｏｕｔが一定レベルとなるようにセンサ面１８と被検出
体１９との間の検出距離ｌ（エル）を変化させて、その
検出距離ｌ（エル）を測定した結果が図３に示されてい
る。これによると、鍔部の厚み比ｔ２／ｔ１が１より大
きくなるに従って検出距離ｌ（エル）は大きくなる。For various pickup sensors in which the thickness ratio t 2 / t 1 of the flange is larger than 1, the output voltage V
FIG. 3 shows the result of measuring the detection distance l (ell) while changing the detection distance l (ell) between the sensor surface 18 and the detection target 19 so that out becomes a constant level. . According to this, the detection distance l according to the thickness ratio t 2 / t 1 of the collar is greater than 1 (El) increases.
【００１４】以上のことから、検出距離ｌ（エル）が同
じ場合には厚み比ｔ２／ｔ１を大きく調整すると出力電
圧Ｖｏｕｔが大きくなるため、ピックアップセンサは被
検出体１９からの磁界を強く引き込むことができる。From the above, when the detection distance l (ell) is the same, the output voltage Vout increases when the thickness ratio t 2 / t 1 is adjusted to a large value. Can be withdrawn.
【００１５】[0015]
【考案の効果】以上、述べたごとく、本考案のピックア
ップセンサによれば、一方の鍔部の厚みを他方の鍔部の
厚みより大きく構成することにより、検出距離及び出力
信号のより大きいものを得られるという効果を奏する。As described above, according to the pickup sensor of the present invention, by making the thickness of one flange larger than the thickness of the other flange, it is possible to increase the detection distance and the output signal. The effect is obtained.
【図１】本考案の一実施例によるピックアップセンサを
示す断面図である。FIG. 1 is a sectional view showing a pickup sensor according to an embodiment of the present invention.
【図２】本考案の他の実施例によるピックアップセンサ
を示す断面図である。FIG. 2 is a sectional view illustrating a pickup sensor according to another embodiment of the present invention;
【図３】図２のピックアップセンサにおける検出距離ｌ
（エル）とｔ２／ｔ１との関係を示す図である。FIG. 3 is a detection distance 1 of the pickup sensor of FIG. 2;
FIG. 4 is a diagram showing a relationship between (L) and t 2 / t 1 .
【図４】一般にピックアップセンサ及び近接する被検出
体を示す図である。FIG. 4 is a diagram showing a pickup sensor and an object to be detected which are close to each other.
【図５】ピックアップセンサの従来例を示す断面図であ
る。FIG. 5 is a sectional view showing a conventional example of a pickup sensor.
１１ 円筒コア １１−１、１１−２ 鍔部 １１ａ 絶縁被膜 １２ 巻線 １３ 端子ピン １５ 保護チューブ １６ 端子ベース １８ センサ面 １９ 被検出体 ２１ 円筒コア ２１ａ 絶縁被膜 ２１−１、２１−２ 鍔部 ２１´ 円筒コア ２１´ａ 絶縁被膜 ２１´−１、２１´−２ 鍔部 ２３ 端子ピン DESCRIPTION OF SYMBOLS 11 Cylindrical core 11-1, 11-2 Flange part 11a Insulation coating 12 Winding 13 Terminal pin 15 Protection tube 16 Terminal base 18 Sensor surface 19 Detected body 21 Cylindrical core 21a Insulation coating 21-1, 21-2 Flange part 21 ′ Cylindrical core 21′a Insulation coating 21′-1, 21′-2 Flange 23 Terminal pin
Claims (1)
両端に予め定められた厚みを持つ一対の鍔部とを持つ磁
性材から成る円筒コアと、該巻線の両端に夫々接続され
一方の鍔部を介して前記軸方向の一方に伸びる一対の出
力用端子ピンと、該一対の出力用端子ピンを支持する端
子ベースとを備え、前記円筒コアの他方の鍔部に近接す
る磁石を前記一対の出力用端子ピンに生じる出力信号に
より検出するピックアップセンサにおいて、前記円筒コ
アは前記一方の鍔部の軸方向の厚みを前記他方の鍔部の
軸方向の厚みより大きくし、前記円筒コアの前記一方の
鍔部は前記円筒コアと一体で前記他方の鍔部の同じ厚み
に構成されたフランジ部分と、前記円筒コアの透磁率よ
り高い磁性材から成り該フランジ部分に接合固定された
磁性板とから成ることを特徴とするピックアップセン
サ。1. A cylindrical core made of a magnetic material having a cylindrical portion around which a winding is wound around an axial direction and a pair of flange portions having predetermined thicknesses at both ends, and a cylindrical core at both ends of the winding, respectively. A pair of output terminal pins connected to each other and extending in one direction in the axial direction via one flange portion, and a terminal base for supporting the pair of output terminal pins, and proximate to the other flange portion of the cylindrical core. In a pickup sensor that detects a magnet by an output signal generated at the pair of output terminal pins, the cylindrical core has an axial thickness of the one flange portion larger than an axial thickness of the other flange portion , Said one of the cylindrical cores
The flange is integral with the cylindrical core and has the same thickness as the other flange.
And the magnetic permeability of the cylindrical core.
Made of high magnetic material and fixed to the flange
A pickup sensor comprising a magnetic plate .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992041240U JP2578140Y2 (en) | 1992-06-16 | 1992-06-16 | Pickup sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992041240U JP2578140Y2 (en) | 1992-06-16 | 1992-06-16 | Pickup sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH062140U JPH062140U (en) | 1994-01-14 |
| JP2578140Y2 true JP2578140Y2 (en) | 1998-08-06 |
Family
ID=12602913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992041240U Expired - Lifetime JP2578140Y2 (en) | 1992-06-16 | 1992-06-16 | Pickup sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2578140Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3601380B2 (en) * | 1999-11-04 | 2004-12-15 | オムロン株式会社 | Displacement sensor |
| CN107405104B (en) * | 2015-03-16 | 2021-08-06 | 圣犹达医疗用品国际控股有限公司 | Field-concentrating antenna for a magnetic position sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60179803U (en) * | 1984-05-07 | 1985-11-29 | 株式会社サンエテック | magnetic detector |
-
1992
- 1992-06-16 JP JP1992041240U patent/JP2578140Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH062140U (en) | 1994-01-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980401 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080522 Year of fee payment: 10 |