JPH0182595U - - Google Patents
Info
- Publication number
- JPH0182595U JPH0182595U JP1987179234U JP17923487U JPH0182595U JP H0182595 U JPH0182595 U JP H0182595U JP 1987179234 U JP1987179234 U JP 1987179234U JP 17923487 U JP17923487 U JP 17923487U JP H0182595 U JPH0182595 U JP H0182595U
- Authority
- JP
- Japan
- Prior art keywords
- cone
- speaker unit
- pole piece
- small diameter
- utility
- 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
- 230000035699 permeability Effects 0.000 claims 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を示す
垂直断面図、第２図はその磁気回路の底面図、第
３図は従来のスピーカーユニツトを示す垂直断面
図である。
なお、図中、Ａは磁気回路、１はポールピース
、１ａは貫通穴、６はうず巻状フエルトである。
その他、図中同一符号は同一部分を示すものとす
る。
FIG. 1 is a vertical sectional view showing a speaker unit of this invention, FIG. 2 is a bottom view of its magnetic circuit, and FIG. 3 is a vertical sectional view showing a conventional speaker unit. In the figure, A is a magnetic circuit, 1 is a pole piece, 1a is a through hole, and 6 is a spiral felt.
In addition, the same reference numerals in the figures indicate the same parts.
Claims (1)
軸心部に設けたコーン形貫通穴の小径部内に、通
気度調整用うず巻状フエルトを充填したことを特
徴とするスピーカーユニツト。 (2) ポールピースに設けたコーン形貫通穴の小
径部内に挿入されるうず巻状フエルトの厚さや長
さの変化により、ヘルムホルツ共振と音圧歪とを
調整するようにした実用新案登録請求の範囲第１
項記載のスピーカーユニツト。[Claims for Utility Model Registration] (1) The small diameter portion of the cone-shaped through hole provided at the axis of the pole piece that forms part of the magnetic circuit is filled with spiral felt for adjusting air permeability. Features speaker unit. (2) A utility model registration request for adjusting Helmholtz resonance and sound pressure distortion by changing the thickness and length of a spiral felt inserted into the small diameter part of a cone-shaped through hole provided in a pole piece. Range 1
The speaker unit described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987179234U JPH0182595U (en) | 1987-11-25 | 1987-11-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987179234U JPH0182595U (en) | 1987-11-25 | 1987-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0182595U true JPH0182595U (en) | 1989-06-01 |
Family
ID=31470796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987179234U Pending JPH0182595U (en) | 1987-11-25 | 1987-11-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0182595U (en) |
-
1987
- 1987-11-25 JP JP1987179234U patent/JPH0182595U/ja active Pending
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