JPS62151299U - - Google Patents
Info
- Publication number
- JPS62151299U JPS62151299U JP4013986U JP4013986U JPS62151299U JP S62151299 U JPS62151299 U JP S62151299U JP 4013986 U JP4013986 U JP 4013986U JP 4013986 U JP4013986 U JP 4013986U JP S62151299 U JPS62151299 U JP S62151299U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- sub
- magnetic circuit
- back plate
- main
- 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
- 230000005520 electrodynamics Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
第１図はこの考案の防磁型磁気回路の半断面図
、第２図は同等価回路図、第３図は漏洩磁束の説
明図、第４図は従来の防磁型磁気回路の半断面図
、第５図は同等価回路である。
１１……バツクプレート、１２……センターポ
ール、１３……主マグネツト、１４……トツププ
レート、２１……副バツクプレート、２２……副
マグネツト、２３……副トツププレート。
Fig. 1 is a half-sectional view of the magnetic shield type magnetic circuit of this invention, Fig. 2 is an equivalent circuit diagram, Fig. 3 is an explanatory diagram of leakage magnetic flux, and Fig. 4 is a half-sectional view of the conventional magnetic shield type magnetic circuit. Figure 5 shows an equivalent circuit. 11...Back plate, 12...Center pole, 13...Main magnet, 14...Top plate, 21...Sub-back plate, 22...Sub-magnet, 23...Sub-top plate.
Claims (1)
て、磁気回路を形成する主マグネツトの外周に沿
つて配置された副マグネツトと、この副マグネツ
トを主磁気回路のバツクプレートに支持する副バ
ツクプレートと、前記副マグネツトを副バツクプ
レートと共に挾んだ状態の副トツププレートとを
備え、前記副マグネツトの極性が主マグネツトと
逆極性になつていることを特徴とする防磁型磁気
回路。 An electrodynamic magnetically shielded magnetic circuit including a magnet includes: a sub-magnet disposed along the outer periphery of a main magnet forming the magnetic circuit; a sub-back plate supporting the sub-magnet on a back plate of the main magnetic circuit; What is claimed is: 1. A magnetic shielding type magnetic circuit comprising a sub-top plate holding a magnet together with a sub-back plate, the sub-magnet having a polarity opposite to that of the main magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4013986U JPS62151299U (en) | 1986-03-18 | 1986-03-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4013986U JPS62151299U (en) | 1986-03-18 | 1986-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62151299U true JPS62151299U (en) | 1987-09-25 |
Family
ID=30853954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4013986U Pending JPS62151299U (en) | 1986-03-18 | 1986-03-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62151299U (en) |
-
1986
- 1986-03-18 JP JP4013986U patent/JPS62151299U/ja active Pending
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