JPH0246496U - - Google Patents
Info
- Publication number
- JPH0246496U JPH0246496U JP12538488U JP12538488U JPH0246496U JP H0246496 U JPH0246496 U JP H0246496U JP 12538488 U JP12538488 U JP 12538488U JP 12538488 U JP12538488 U JP 12538488U JP H0246496 U JPH0246496 U JP H0246496U
- Authority
- JP
- Japan
- Prior art keywords
- center pole
- top plate
- magnet
- fixed
- speaker unit
- 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
- 239000004020 conductor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 1
Landscapes
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Description
第１図はこの考案のスピーカーユニツトにおけ
る磁気回路部の垂直断面図、第２図はこの考案の
他の実施例を示す磁気回路部の垂直断面図、第３
図は第１図のものの交流磁力線図、第４図はこの
考案のものと従来例との（ΔＢｇ）（ΔＢｍ１）
（ΔＢｍ２）の比較図、第５図イ，ロはこの考案
のものと従来例とのセンターポールの共振周波数
特性の比較図、第６図および第７図は従来のスピ
ーカーユニツトにおける磁気回路部の垂直断面図
、第８図は交流磁束の流れ図、第９図および第１
０図は従来例の交流磁力線図である。
なお図中１はセンターポール、１ａはボトムプ
レート、４はマグネツト、５はトツププレート、
８はボイスコイル、９は磁気ギヤツプ、１０は導
電性材料である。その他図中同一符号は同一また
は相当部分を示すものとする。
FIG. 1 is a vertical sectional view of the magnetic circuit section in the speaker unit of this invention, FIG. 2 is a vertical sectional view of the magnetic circuit section showing another embodiment of this invention, and FIG.
The figure shows the AC magnetic field line diagram of the one in Figure 1, and Figure 4 shows the (ΔBg) (ΔBm 1 ) of this invention and the conventional example.
(ΔBm 2 ), Figure 5 A and B are comparison diagrams of the resonant frequency characteristics of the center pole of this invention and the conventional example, and Figures 6 and 7 are the magnetic circuit section of the conventional speaker unit. Fig. 8 is a flow chart of alternating current magnetic flux, Fig. 9 and Fig. 1 are vertical cross-sectional views of
Figure 0 is an AC magnetic field line diagram of a conventional example. In the figure, 1 is the center pole, 1a is the bottom plate, 4 is the magnet, 5 is the top plate,
8 is a voice coil, 9 is a magnetic gap, and 10 is a conductive material. In other figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
されたマグネツトおよびこのマグネツト上に固定
され上記センターポールとの間にボイスコイルが
挿入される磁気ギヤツプを形成するトツププレー
トを備えたものにおいて、上記センターポールの
頂部に上記トツププレートの上面より突出する環
状突堤部を一体に形成させ、この突堤部の内外に
渦電流生成用の導電性材料を嵌着させたことを特
徴とするスピーカーユニツト。 A center pole, a magnet fixed on the bottom plate, and a top plate fixed on the magnet and forming a magnetic gap in which a voice coil is inserted between the center pole and the center pole. A speaker unit characterized in that an annular bulge projecting from the upper surface of the top plate is integrally formed with the top plate, and a conductive material for generating an eddy current is fitted inside and outside of the bulge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12538488U JPH0246496U (en) | 1988-09-26 | 1988-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12538488U JPH0246496U (en) | 1988-09-26 | 1988-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246496U true JPH0246496U (en) | 1990-03-29 |
Family
ID=31375947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12538488U Pending JPH0246496U (en) | 1988-09-26 | 1988-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246496U (en) |
-
1988
- 1988-09-26 JP JP12538488U patent/JPH0246496U/ja active Pending
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