Title:
電気音響変換器と電気音響変換器の製造方法
Document Type and Number:
Japanese Patent JP7414254
Kind Code:
B2
Abstract:
An acoustic diaphragm 1 according to the present invention includes a center dome member, and a sub dome member. The center dome member includes a center dome 2 and an annular first plane part 2a that is disposed along the outer periphery of the center dome and formed integrally with the center dome. The sub dome member includes a sub dome 3 and an annular second plane part 3a that is disposed along the inner periphery of the sub dome and formed integrally with the sub dome. The first plane part includes a rising part 2b of the center dome, a first front surface, and a first back surface. The second plane part includes an inner peripheral edge 3b, a second front surface, and a second back surface. The center dome is formed of a material different from that of the sub dome. The sub dome surrounds the periphery of the center dome. The inner peripheral edge coincides with the rising part. The first front surface is joined to the second back surface.
Inventors:
Hiromichi Ozawa
Application Number:
JP2019224838A
Publication Date:
January 16, 2024
Filing Date:
December 12, 2019
Export Citation:
Assignee:
Audio Technica Co., Ltd.
International Classes:
H04R7/20; H04R7/12; H04R9/00; H04R9/04; H04R31/00
Domestic Patent References:
| JP2007060463A | ||||
| JP2016149677A | ||||
| JP8019092A |
Attorney, Agent or Firm:
Keiichi Nishimura