JPH01108698U - - Google Patents
Info
- Publication number
- JPH01108698U JPH01108698U JP329888U JP329888U JPH01108698U JP H01108698 U JPH01108698 U JP H01108698U JP 329888 U JP329888 U JP 329888U JP 329888 U JP329888 U JP 329888U JP H01108698 U JPH01108698 U JP H01108698U
- Authority
- JP
- Japan
- Prior art keywords
- frame
- plate
- holes
- pole
- 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
- 210000003027 ear inner Anatomy 0.000 claims 1
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図は変形
例のフレームの底面図、第4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は音響迷路、7は貫通
孔である。
Fig. 1 is a sectional view of the embodiment of the present invention, Fig. 2 is a partially cutaway perspective view of the same embodiment from the back, Fig. 3 is a bottom view of a modified frame, and Fig. 4 is a sectional view of the conventional example. It is. 1 is the frame, 2 is the yoke, 3 is the voice coil,
4 is a diaphragm, 5 is a leakage hole, 6 is an acoustic labyrinth, and 7 is a through hole.
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底面と
の対向部に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2
b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
らなり且つ該ポール部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
、前記フレーム1の振動板4の背面部で且つ前記
漏孔5と同数の貫通孔7が穿設されると共に、フ
レーム1の底面と前記板状部2aとの間に漏孔5
と貫通孔7とを連通させる音響迷路6が1個以上
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-like part 2a that is attached to the plate-like part 2a and a pole part 2b that protrudes from the center of the plate-like part 2a, and the pole part 2.
b, and a diaphragm 4 whose portion facing the pole portion 2b or the entirety thereof is made of a magnetic plate and which is held on the frame 1 with a slight gap from the pole portion 2b. The same number of through holes 7 as the leak holes 5 are bored in the back surface of the diaphragm 4 of the frame 1, and leak holes 5 are formed between the bottom surface of the frame 1 and the plate-shaped portion 2a.
An electro-acoustic transducer characterized in that one or more acoustic labyrinths 6 are formed to communicate the through-holes 7 and 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP329888U JPH01108698U (en) | 1988-01-13 | 1988-01-13 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP329888U JPH01108698U (en) | 1988-01-13 | 1988-01-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01108698U true JPH01108698U (en) | 1989-07-24 |
Family
ID=31204810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP329888U Pending JPH01108698U (en) | 1988-01-13 | 1988-01-13 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01108698U (en) |
-
1988
- 1988-01-13 JP JP329888U patent/JPH01108698U/ja active Pending
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