JPH0346298U - - Google Patents
Info
- Publication number
- JPH0346298U JPH0346298U JP10624589U JP10624589U JPH0346298U JP H0346298 U JPH0346298 U JP H0346298U JP 10624589 U JP10624589 U JP 10624589U JP 10624589 U JP10624589 U JP 10624589U JP H0346298 U JPH0346298 U JP H0346298U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- ring
- compensating
- magnetic circuit
- whose
- 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
- 230000004907 flux Effects 0.000 claims description 2
- 230000005284 excitation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
第１図は本考案の第１実施例、第２図および第
３図はそれぞれ従来例、第４図は従来例と本考案
とにおいてアウターヨーク底面中央を中心とした
半径方向の漏洩磁束密度を比較した説明図を示す
。
１……プレート、２……環状磁石、３……ヨー
ク、４……補償用環状磁石、５……補償用電磁コ
イル、６……アウターヨーク、７……直流電源、
８……電圧調整ボリユーム。
Fig. 1 shows the first embodiment of the present invention, Figs. 2 and 3 show the conventional example, and Fig. 4 shows the leakage magnetic flux density in the radial direction centered at the center of the bottom surface of the outer yoke in the conventional example and the present invention. An explanatory diagram for comparison is shown. DESCRIPTION OF SYMBOLS 1... Plate, 2... Annular magnet, 3... Yoke, 4... Annular magnet for compensation, 5... Electromagnetic coil for compensation, 6... Outer yoke, 7... DC power supply,
8...Voltage adjustment volume.
Claims (1)
磁石と磁極方向が逆になつている補償用磁石を対
向配置し、これらを覆うアウターヨークを備えた
磁気回路において、 前記補償用磁石に環状磁石を用い、かつその内
側の中空部分に外側の環状磁石の磁極と磁極方向
が逆で、かつ励磁電圧が調整可能な電磁コイルを
設けたことを特徴とするスピーカ用低漏洩磁束型
磁気回路。[Scope of Claim for Utility Model Registration] In a magnetic circuit including an outer magnetic type magnetic circuit having an annular magnet, a compensating magnet whose magnetic pole direction is opposite to that of the annular magnet, and an outer yoke covering the compensating magnet. , for a speaker, characterized in that a ring-shaped magnet is used as the compensating magnet, and an electromagnetic coil whose magnetic pole direction is opposite to that of the outer ring-shaped magnet and whose excitation voltage is adjustable is provided in a hollow part inside the ring-shaped magnet. Low leakage magnetic flux type magnetic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10624589U JPH0346298U (en) | 1989-09-11 | 1989-09-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10624589U JPH0346298U (en) | 1989-09-11 | 1989-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0346298U true JPH0346298U (en) | 1991-04-30 |
Family
ID=31654983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10624589U Pending JPH0346298U (en) | 1989-09-11 | 1989-09-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0346298U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63120593A (en) * | 1986-11-07 | 1988-05-24 | Matsushita Electric Ind Co Ltd | Speaker |
-
1989
- 1989-09-11 JP JP10624589U patent/JPH0346298U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63120593A (en) * | 1986-11-07 | 1988-05-24 | Matsushita Electric Ind Co Ltd | Speaker |