SPEAKER AND METHOD FOR MANUFACTURING SPEAKER

Title:

SPEAKER AND METHOD FOR MANUFACTURING SPEAKER

Document Type and Number:

WIPO Patent Application WO/2020/195837

Kind Code:

A1

Abstract:

An objective of the present invention is to provide a speaker having a powerful magnetic circuit and a method for manufacturing a speaker. To achieve this objective, a speaker according to one aspect of the present technology is provided with an outer magnet and an inner magnet. The outer magnet has a ring shape and is magnetized along an axial direction of the ring shape. The inner magnet has a circular outer shape as seen from the axial direction of the outer magnet, is magnetized in the opposite direction of the outer magnet along the axial direction, and is disposed inside the outer magnet with a gap therebetween.

Inventors:

SHINMEN NAOKI (JP)
NOMOTO KOYA (JP)
IGARAHI GO (JP)
OKITA TAKANARI (JP)

Application Number:

PCT/JP2020/010551

Publication Date:

October 01, 2020

Filing Date:

March 11, 2020

Export Citation:

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Assignee:

SONY CORP (JP)

International Classes:

H04R9/02; H04R31/00

Foreign References:

US8855356B1	2014-10-07
JPH07284196A	1995-10-27
JP2005311449A	2005-11-04
JP2008187456A	2008-08-14

Other References: