JPH0257698U - - Google Patents
Info
- Publication number
- JPH0257698U JPH0257698U JP11492089U JP11492089U JPH0257698U JP H0257698 U JPH0257698 U JP H0257698U JP 11492089 U JP11492089 U JP 11492089U JP 11492089 U JP11492089 U JP 11492089U JP H0257698 U JPH0257698 U JP H0257698U
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- ballast
- acoustic transducer
- magnetic pole
- electromagnetic acoustic
- 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
- 238000003466 welding Methods 0.000 claims 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Description
第１図は従来の電磁型音響変換器の正面断面図
、第２図は同じくその欠点を説明するための要部
の拡大図、第３図は本考案に係る電磁型音響変換
器の正面断面図である。
３……磁極を構成する鉄心、６……振動板、７
……バラスト、イ……熔接点、ロ……凹陥部。
Fig. 1 is a front cross-sectional view of a conventional electromagnetic acoustic transducer, Fig. 2 is an enlarged view of the main parts to explain its drawbacks, and Fig. 3 is a front cross-sectional view of an electromagnetic acoustic transducer according to the present invention. It is a diagram. 3... Iron core forming the magnetic pole, 6... Vibration plate, 7
...Ballast, A... Welded contact, B... Recessed part.
Claims (1)
を介して対向する磁極とを有する電磁型音響変換
器において、前記バラストの溶接点を前記振動板
の略中央部とし、前記熔接点と対向する前記磁極
の端面に、前記バラストの熔接に伴う前記振動板
の凹凸変形面積よりも大きな孔径の凹陥部を設け
たことを特徴とする電磁型音響変換器。 In an electromagnetic acoustic transducer having a diaphragm to which a ballast is welded and a magnetic pole facing the diaphragm with an air gap therebetween, the welding point of the ballast is located approximately at the center of the diaphragm and is opposed to the welding point. An electromagnetic acoustic transducer characterized in that an end face of the magnetic pole is provided with a concave portion having a hole diameter larger than an area of uneven deformation of the diaphragm due to welding of the ballast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11492089U JPH0257698U (en) | 1989-09-30 | 1989-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11492089U JPH0257698U (en) | 1989-09-30 | 1989-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0257698U true JPH0257698U (en) | 1990-04-25 |
Family
ID=31356104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11492089U Pending JPH0257698U (en) | 1989-09-30 | 1989-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0257698U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511279U (en) * | 1978-07-07 | 1980-01-24 |
-
1989
- 1989-09-30 JP JP11492089U patent/JPH0257698U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5511279U (en) * | 1978-07-07 | 1980-01-24 |