JPH0423394U - - Google Patents
Info
- Publication number
- JPH0423394U JPH0423394U JP6466490U JP6466490U JPH0423394U JP H0423394 U JPH0423394 U JP H0423394U JP 6466490 U JP6466490 U JP 6466490U JP 6466490 U JP6466490 U JP 6466490U JP H0423394 U JPH0423394 U JP H0423394U
- Authority
- JP
- Japan
- Prior art keywords
- lower plate
- main magnet
- ring
- magnetic
- magnetic circuit
- 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
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
第１図は本考案実施例の断面図、第２図は実施
例の漏洩磁束分布図、第３図は従来例の漏洩磁束
分布図、第４図は従来例の断面図である。
１は下部プレート、２はポール、３は主マグネ
ツト、４は上部プレート、５はキヤンセルマグネ
ツト、６は防磁カパーである。
FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a leakage flux distribution diagram of the embodiment, FIG. 3 is a leakage flux distribution diagram of a conventional example, and FIG. 4 is a sectional view of a conventional example. 1 is a lower plate, 2 is a pole, 3 is a main magnet, 4 is an upper plate, 5 is a cancel magnet, and 6 is a magnetic shielding cover.
Claims (1)
されたポール２と下部プレート１の上に載置され
たリング状の主マグネツト３及び該主マグネツト
３の上に重ねて載置されたリング状の上部プレー
ト４とから成る外磁型磁気回路の前記下部プレー
ト１の背面に主マグネツト３に対し逆極性に着磁
されたリング状のキヤンセルマグネツト５が配置
され且つ防磁カバー６によつて磁気回路背面が覆
われている防磁型スプーカ用磁気回路に於て、前
記防磁カバー６の背面に複数個の小孔７が穿設さ
れていることを特徴とする防磁型スピーカ用磁気
回路。 A lower plate 1, a pole 2 protruding from the center of the lower plate 1, a ring-shaped main magnet 3 placed on the lower plate 1, and a ring-shaped main magnet 3 placed on top of the main magnet 3. A ring-shaped cancel magnet 5 magnetized with the opposite polarity to the main magnet 3 is arranged on the back side of the lower plate 1 of the outer magnetic type magnetic circuit consisting of the upper plate 4, and the magnetic circuit is protected by a magnetic shielding cover 6. A magnetic circuit for a magnetically shielded speaker whose back surface is covered, characterized in that a plurality of small holes 7 are bored in the back surface of the magnetic shield cover 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6466490U JPH0423394U (en) | 1990-06-18 | 1990-06-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6466490U JPH0423394U (en) | 1990-06-18 | 1990-06-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0423394U true JPH0423394U (en) | 1992-02-26 |
Family
ID=31595810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6466490U Pending JPH0423394U (en) | 1990-06-18 | 1990-06-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0423394U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4114726Y1 (en) * | 1964-03-19 | 1966-07-09 |
-
1990
- 1990-06-18 JP JP6466490U patent/JPH0423394U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4114726Y1 (en) * | 1964-03-19 | 1966-07-09 |
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