JPH0165592U - - Google Patents
Info
- Publication number
- JPH0165592U JPH0165592U JP1987160039U JP16003987U JPH0165592U JP H0165592 U JPH0165592 U JP H0165592U JP 1987160039 U JP1987160039 U JP 1987160039U JP 16003987 U JP16003987 U JP 16003987U JP H0165592 U JPH0165592 U JP H0165592U
- Authority
- JP
- Japan
- Prior art keywords
- voice coil
- axial direction
- width
- convexities
- concavities
- 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
- 238000004804 winding Methods 0.000 claims 3
- 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図は本考案のスピーカ用磁気回路の基本的
構成を示す図、第２図Ａ，Ｂは対極とボイスコイ
ルとの位置関係とボイスコイルに対する磁束密度
との関係を模式的に示す図、第３図は本考案に係
る実施例を示す半断面図、第４図は同じく磁気ギ
ヤツプ内の磁束密度分布を示すグラフ、第５図は
従来例のスピーカ用磁気回路を示す半断面図、第
６図はシヨートボイスコイルタイプの磁気回路の
一部を示す半断面図、第７図はロングボイスコイ
ルタイプの磁気回路の一部を示す半断面図である
。
１０……ポールピース、１１……対極（上部プ
レート）、１１ａ……対向面、１２……磁気ギヤ
ツプ、１３……ボイスコイル、１４……振動板、
１５……凸部、１６……凹部。
FIG. 1 is a diagram showing the basic configuration of the speaker magnetic circuit of the present invention, and FIGS. 2A and 2B are diagrams schematically showing the relationship between the positional relationship between the counter electrode and the voice coil and the magnetic flux density with respect to the voice coil. FIG. 3 is a half-sectional view showing an embodiment of the present invention, FIG. 4 is a graph showing the magnetic flux density distribution in the magnetic gap, and FIG. 5 is a half-sectional view showing a conventional speaker magnetic circuit. FIG. 6 is a half sectional view showing a part of a short voice coil type magnetic circuit, and FIG. 7 is a half sectional view showing a part of a long voice coil type magnetic circuit. 10... Pole piece, 11... Counter electrode (upper plate), 11a... Opposing surface, 12... Magnetic gap, 13... Voice coil, 14... Vibration plate,
15... Convex portion, 16... Concave portion.
Claims (1)
ヤツプ内に介在されるボイスコイルに駆動電流を
供給することにより、振動板を上記ポールピース
の軸方向に振動させるスピーカの磁気回路におい
て、 上記対極のポールピースとの対向面に、上記軸
方向に所定ピツチで凹凸を設け、 この凹凸による凹部と凸部の上記軸方向の各幅
寸法を上記ボイスコイルの上記軸方向における巻
き幅の半分にするとともに、このボイスコイルの
巻き幅を上記対向面の幅よりも狭くし、上記対向
面の軸方向両端に凸部が位置するようにしたこと
を特徴とするスピーカ用磁気回路。[Claims for Utility Model Registration] A speaker that vibrates a diaphragm in the axial direction of the pole piece by supplying a driving current to a voice coil interposed in a magnetic gap formed between the pole piece and the counter electrode. In the magnetic circuit, the surface facing the opposite pole piece is provided with concavities and convexities at a predetermined pitch in the axial direction, and each width dimension of the concavities and convexities in the axial direction due to the concavities and convexities is defined as the width dimension in the axial direction of the voice coil. A magnet for a speaker, characterized in that the winding width of the voice coil is made half of the winding width of the voice coil, the winding width of the voice coil is narrower than the width of the facing surface, and convex portions are located at both ends of the facing surface in the axial direction. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987160039U JPH0165592U (en) | 1987-10-20 | 1987-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987160039U JPH0165592U (en) | 1987-10-20 | 1987-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0165592U true JPH0165592U (en) | 1989-04-26 |
Family
ID=31441761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987160039U Pending JPH0165592U (en) | 1987-10-20 | 1987-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0165592U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50143519A (en) * | 1974-05-07 | 1975-11-19 | ||
| JPS553207A (en) * | 1978-06-22 | 1980-01-11 | Matsushita Electric Ind Co Ltd | Double-cap type speaker |
-
1987
- 1987-10-20 JP JP1987160039U patent/JPH0165592U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50143519A (en) * | 1974-05-07 | 1975-11-19 | ||
| JPS553207A (en) * | 1978-06-22 | 1980-01-11 | Matsushita Electric Ind Co Ltd | Double-cap type speaker |
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