JPH01108697U - - Google Patents
Info
- Publication number
- JPH01108697U JPH01108697U JP329788U JP329788U JPH01108697U JP H01108697 U JPH01108697 U JP H01108697U JP 329788 U JP329788 U JP 329788U JP 329788 U JP329788 U JP 329788U JP H01108697 U JPH01108697 U JP H01108697U
- Authority
- JP
- Japan
- Prior art keywords
- frame
- pole portion
- plate
- facing
- diaphragm
- 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
Landscapes
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Description
第１図は本考案実施例の断面図、第２図は同実
施例の背面からの一部切欠斜視図、第３図は従来
例の断面図である。
１はフレーム、２はヨーク、３は音声コイル、
４は振動板、５は漏孔、６はキヤビテイ、７は貫
通路である。
FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of the same embodiment from the back, and FIG. 3 is a sectional view of a conventional example. 1 is the frame, 2 is the yoke, 3 is the voice coil,
4 is a diaphragm, 5 is a leakage hole, 6 is a cavity, and 7 is a through path.
Claims (1)
チツクマグネツトからなるフレーム１と、該フレ
ーム１の底面に固定され且つ該フレーム１の底面
に面した部位に１個以上の漏孔５が穿設されてい
る板状部２ａと該板状部２ａの中心部に突設され
たポール部２ｂとからなるヨーク２と、該ポール
部２ｂに巻回されている音声コイル３と、前記ポ
ール部２ｂと対向する部位若しくは全体が磁性体
板からなると共に該ポール部２ｂと僅かな間隙を
隔ててフレーム１に保持されている振動板４とか
らなり、フレーム１の底面と前記板状部２ａとの
間に漏孔５により外部空間に通じるキヤビテイ６
が１個以上形成されると共に、振動板４の背面空
間に面したフレーム１の内面に前記キヤビテイ６
に通じる１個以上の貫通路７が形成されているこ
とを特徴とする電気音響変換器。 A frame 1 made of a ring-shaped plastic magnet magnetized in the direction of the main axis of the converter, and one or more leak holes 5 fixed to the bottom surface of the frame 1 and bored in a portion facing the bottom surface of the frame 1. a yoke 2 consisting of a plate-shaped portion 2a with a cylindrical shape and a pole portion 2b protruding from the center of the plate-shaped portion 2a, a voice coil 3 wound around the pole portion 2b, and the pole portion 2b. A portion or the entirety facing the pole portion 2b is made of a magnetic plate and is comprised of a diaphragm 4 held on the frame 1 with a slight gap between the pole portion 2b and the bottom surface of the frame 1 and the plate portion 2a. A cavity 6 that communicates with the external space through a leak hole 5 in between.
One or more cavities 6 are formed on the inner surface of the frame 1 facing the rear space of the diaphragm 4.
An electroacoustic transducer characterized in that one or more through passages 7 are formed leading to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP329788U JPH01108697U (en) | 1988-01-13 | 1988-01-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP329788U JPH01108697U (en) | 1988-01-13 | 1988-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01108697U true JPH01108697U (en) | 1989-07-24 |
Family
ID=31204808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP329788U Pending JPH01108697U (en) | 1988-01-13 | 1988-01-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01108697U (en) |
-
1988
- 1988-01-13 JP JP329788U patent/JPH01108697U/ja active Pending
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