JPS62112107U - - Google Patents
Info
- Publication number
- JPS62112107U JPS62112107U JP20355085U JP20355085U JPS62112107U JP S62112107 U JPS62112107 U JP S62112107U JP 20355085 U JP20355085 U JP 20355085U JP 20355085 U JP20355085 U JP 20355085U JP S62112107 U JPS62112107 U JP S62112107U
- Authority
- JP
- Japan
- Prior art keywords
- plate
- permanent magnet
- magnetic field
- short side
- yokes
- 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.)
- Granted
Links
- 230000004907 flux Effects 0.000 claims description 2
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Description
第１図はこの考案による磁界発生装置を示す横
断上面図と正面説明図である。第２図と第３図は
この考案による永久磁石の構成を示す横断上面説
明図と縦断説明図である。第４図は磁界発生装置
を示す横断上面図と正面説明図である。
１…円柱状継鉄、２…板状継鉄、３，８，９…
Ｆｅ―Ｂ―Ｒ系永久磁石、４…磁極片、５…空隙
、６…環状突起、７…磁束シヤント材。
FIG. 1 is a cross-sectional top view and a front explanatory view showing a magnetic field generating device according to this invention. FIGS. 2 and 3 are a cross-sectional top view and a longitudinal cross-sectional view showing the structure of the permanent magnet according to this invention. FIG. 4 is a cross-sectional top view and a front explanatory view showing the magnetic field generating device. 1...Cylindrical yoke, 2...Plate yoke, 3, 8, 9...
Fe-BR permanent magnet, 4... magnetic pole piece, 5... air gap, 6... annular projection, 7... magnetic flux shunt material.
Claims (1)
に接続して対向する一対の板状継鉄の対向面に永
久磁石を着設し、各永久磁石の対向面に磁極片を
設けて、該空隙に磁界を発生させる磁界発生装置
において、一対の板状継鉄を長方形となし、板状
継鉄の短辺Ｌと磁極片の該短辺方向の寸法Ｄとの
比Ｄ／Ｌを０．６〜１．２となし、かつ永久磁石
の各々の対向面における磁束発生量が、板状継鉄
長辺側対向面より、板状継鉄短辺側対向面の磁束
発生量が多い特性を有する前記永久磁石よりなる
ことを特徴とする磁界発生装置。 Permanent magnets are attached to the opposing surfaces of a pair of plate-shaped yokes that are magnetically connected with the columnar yokes used as spacing members to form a gap, and magnetic pole pieces are provided on the opposing surfaces of each permanent magnet. In a magnetic field generating device that generates a magnetic field in an air gap, a pair of plate yokes are rectangular, and the ratio D/L of the short side L of the plate yoke and the dimension D of the magnetic pole piece in the short side direction is 0. 6 to 1.2, and the amount of magnetic flux generated on each opposing surface of the permanent magnet is larger on the short side facing surface of the plate yoke than on the long side facing surface of the plate yoke. A magnetic field generating device comprising the above permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20355085U JPH0244486Y2 (en) | 1985-12-27 | 1985-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20355085U JPH0244486Y2 (en) | 1985-12-27 | 1985-12-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62112107U true JPS62112107U (en) | 1987-07-17 |
| JPH0244486Y2 JPH0244486Y2 (en) | 1990-11-27 |
Family
ID=31168985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20355085U Expired JPH0244486Y2 (en) | 1985-12-27 | 1985-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244486Y2 (en) |
-
1985
- 1985-12-27 JP JP20355085U patent/JPH0244486Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0244486Y2 (en) | 1990-11-27 |
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