JPS6271996U - - Google Patents
Info
- Publication number
- JPS6271996U JPS6271996U JP16316185U JP16316185U JPS6271996U JP S6271996 U JPS6271996 U JP S6271996U JP 16316185 U JP16316185 U JP 16316185U JP 16316185 U JP16316185 U JP 16316185U JP S6271996 U JPS6271996 U JP S6271996U
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- outer peripheral
- plate
- bottom plate
- ring
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000005415 magnetization Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
第１図は本考案の実施例の防磁型スピーカの中
央側断面図であり、第２図、第３図は従来の防磁
型スピーカの中央側断面図である。第４図、第５
図、第６図はリング状のプレートの形状斜視図で
ある。
１……ボトムプレート、２……センターポール
、３……第１の磁石、４……第２の磁石、５……
シールドカバー、６……ボイスコイル、７……ア
ツパープレート、８……ダンパー、９……フレー
ム、１０……コーン、１１……凹部、１２……外
周部平面板、１３……ねじ、１４……リング状の
プレート。
FIG. 1 is a sectional view from the center side of a magnetically shielded speaker according to an embodiment of the present invention, and FIGS. 2 and 3 are sectional views from the center side of a conventional magnetically shielded speaker. Figures 4 and 5
FIG. 6 is a perspective view of the ring-shaped plate. 1... Bottom plate, 2... Center pole, 3... First magnet, 4... Second magnet, 5...
Shield cover, 6... Voice coil, 7... Upper plate, 8... Damper, 9... Frame, 10... Cone, 11... Recess, 12... Outer peripheral flat plate, 13... Screw, 14 ...A ring-shaped plate.
Claims (1)
ートであつて、該センターポールの立上り部に凹
部を備え、かつ該凹部の外周部に該ボトムプレー
トの下面よりも高位置に設定された下面をもつ外
周部平面板を備えたボトムプレートと、このボト
ムプレートの該外周部平面板の上面に設けられた
リング状の第１の磁石と、内周面部が前記センタ
ーポールの外周面に所定のスペースをもつて対向
するように配設されているアツパープレートと、
前記ボトムプレートの下面外周部に設けた前記第
１の磁石とは磁化方向を逆にしたリング状の第２
磁石と、この第２の磁石の下面と前記アツパープ
レートの外周面に固着する凹状のシールドカバー
と、から成る防磁型スピーカの磁気回路において
、前記第２の磁石の上面と前記ボトムプレートの
前記外周部平面板の下面の双方に固着され、さら
に前記シールドカバーの内面に固着される非磁性
体材料のリング状のプレートを備えたことを特徴
とする防磁型スピーカの磁気回路。 A bottom plate having a center pole at the center of the upper surface, the center pole having a concave portion in the rising portion thereof, and a flat outer peripheral portion having a lower surface set at a higher position than the lower surface of the bottom plate at the outer circumferential portion of the concave portion. A bottom plate having a face plate, a ring-shaped first magnet provided on the upper surface of the outer peripheral flat plate, and an inner peripheral surface facing the outer peripheral surface of the center pole with a predetermined space therebetween. Atsupah plate arranged so as to
A ring-shaped second magnet is provided on the outer periphery of the lower surface of the bottom plate and has a magnetization direction opposite to that of the first magnet.
In a magnetic circuit of a magnetically shielded speaker comprising a magnet and a concave shield cover fixed to a lower surface of the second magnet and an outer peripheral surface of the upper plate, the upper surface of the second magnet and the outer peripheral surface of the bottom plate are What is claimed is: 1. A magnetic circuit for a magnetically shielded speaker, comprising a ring-shaped plate made of a non-magnetic material fixed to both lower surfaces of the outer peripheral flat plate and further fixed to the inner surface of the shield cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16316185U JPS6271996U (en) | 1985-10-24 | 1985-10-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16316185U JPS6271996U (en) | 1985-10-24 | 1985-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6271996U true JPS6271996U (en) | 1987-05-08 |
Family
ID=31091103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16316185U Pending JPS6271996U (en) | 1985-10-24 | 1985-10-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6271996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014127786A (en) * | 2012-12-26 | 2014-07-07 | Kenta Tanaka | Speaker device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639797B2 (en) * | 1975-06-04 | 1981-09-16 | ||
| JPS6037998B2 (en) * | 1977-09-21 | 1985-08-29 | 株式会社日立製作所 | semiconductor storage device |
-
1985
- 1985-10-24 JP JP16316185U patent/JPS6271996U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5639797B2 (en) * | 1975-06-04 | 1981-09-16 | ||
| JPS6037998B2 (en) * | 1977-09-21 | 1985-08-29 | 株式会社日立製作所 | semiconductor storage device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014127786A (en) * | 2012-12-26 | 2014-07-07 | Kenta Tanaka | Speaker device |
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