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Patent Searching and Data


Title:
DIAPHRAGM AND ELECTROACOUSTIC TRANSDUCER COMPRISING THIS DIAPHRAGM
Document Type and Number:
WIPO Patent Application WO/2019/102860
Kind Code:
A1
Abstract:
The present invention enables a reduction in harmonic distortion in a speaker unit comprising a diaphragm the rigidity of which varies according to the direction from the center to the outer circumference thereof. Provided is a speaker unit equipped with: a diaphragm main body part the rigidity of which varies according to the direction from the center to the outer circumference thereof; and a protection member in which a rib extending in a second direction is provided, the second direction crossing a first direction in which the rigidity of the diaphragm main body part has a maximum value, and the rigidity in the second direction having a smaller value than the maximum value.

Inventors:
NOZAKI, Akihiko (10-1 Nakazawa-cho, Naka-ku, Hamamatsu-sh, Shizuoka 50, 〒4308650, JP)
Application Number:
JP2018/041480
Publication Date:
May 31, 2019
Filing Date:
November 08, 2018
Export Citation:
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Assignee:
YAMAHA CORPORATION (10-1, Nakazawa-cho Naka-ku, Hamamatsu-sh, Shizuoka 50, 〒4308650, JP)
International Classes:
H04R7/12; H04R9/02; H04R9/04
Foreign References:
JP2015170881A2015-09-28
JPH08168092A1996-06-25
US4205205A1980-05-27
Attorney, Agent or Firm:
CHUBU PATENT OFFICE (Nagoya Mitsui-Bldg. Honkan 10th Floor, 24-30 Meiekiminami 1-chome, Nakamura-ku, Nagoya-sh, Aichi 03, 〒4500003, JP)
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