发明名称 |
Piezoelectric diaphragm electro-acoustic transducer |
摘要 |
A piezoelectric electro-acoustic transducer which includes a diaphragm having a piezoelectric property, a base plate of a stiff material, and a resilient backing member which is compressedly covered at one side with the base plate and brought into contact at the other side with the diaphragm to provide the diaphragm with resiliency and/or tension, characterized in that the base plate is provided at one side adjacent said backing member with a surface which has a concave and/or a convex curvature to provide the diaphragm with different suitable pressures through said backing member, whereby it has become possible to improve the frequency characteristics, particularly, the low frequency characteristics of the transducer and a high conversion efficiency thereof.
|
申请公布号 |
US3982143(A) |
申请公布日期 |
1976.09.21 |
申请号 |
US19750549341 |
申请日期 |
1975.02.12 |
申请人 |
PIONEER ELECTRONIC CORPORATION |
发明人 |
TAMURA, MASAHIKO;OYABA, TAKASHI |
分类号 |
H04R17/00;(IPC1-7):H01L41/08 |
主分类号 |
H04R17/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|