Title:
SPEAKER DIAPHRAGM
Document Type and Number:
WIPO Patent Application WO/2020/162289
Kind Code:
A1
Abstract:
A speaker diaphragm 1 according to the present invention has two or more lamination regions having different numbers of lamination layers in which a plurality of layers are laminated in the thickness direction. The average densities of the lamination regions having different numbers of lamination layers differ from each other.
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| JPS56162598 | MANUFACTURE OF DIAPHRAGM FOR SPEAKER |
Inventors:
NAKASHIMA HIROSHI (JP)
SANO TSUNENORI (JP)
SANO TSUNENORI (JP)
Application Number:
PCT/JP2020/003228
Publication Date:
August 13, 2020
Filing Date:
January 29, 2020
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
H04R7/02; H04R7/12; H04R31/00
Domestic Patent References:
| WO2014162412A1 | 2014-10-09 |
Foreign References:
| JP2017173713A | 2017-09-28 | |||
| JPH1013988A | 1998-01-16 | |||
| JP2016082442A | 2016-05-16 | |||
| JP2007088879A | 2007-04-05 |
Attorney, Agent or Firm:
TACHIBANA, Kenji et al. (JP)
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