SPEAKER UNIT - FOSTER ELECTRIC CO LTD

Title:

SPEAKER UNIT

Document Type and Number:

WIPO Patent Application WO/2019/073697

Kind Code:

A1

Abstract:

[Problem] The present invention addresses the problem of providing a speaker unit that is low-cost, has good sound quality, and can be made thin. [Solution] A speaker unit comprises: a magnetic circuit 61 in which a space serving as a magnetic gap G is formed on the inner side of a cylindrical section 69; a voice coil 85 disposed inside the magnetic gap G; and a diaphragm 51 which has a penetrating center hole 51a formed at the center, is supported on a frame 53 on the side with an outer peripheral section 51b, and has the inner peripheral surface of an inner peripheral section 51c connected to the voice coil 85. The cylindrical section 69 of the magnetic circuit 61 has upright wall parts 69c and slits 69a formed along the vibrating direction A of the diaphragm 51, and the inner peripheral section 51c of the diaphragm 51 has insertion holes (upright wall insertion parts) 57 wherethrough the upright wall parts 69c are inserted and insertion parts 59 to be inserted into the slits 69a.

Inventors:

TABATA TAKAYUKI (JP)

Application Number:

PCT/JP2018/030983

Publication Date:

April 18, 2019

Filing Date:

August 22, 2018

Export Citation:

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Assignee:

FOSTER ELECTRIC CO LTD (JP)

International Classes:

H04R9/02; H04R7/12; H04R9/04

Foreign References:

JPS61396U	1986-01-06
JP2011004308A	2011-01-06
JPH07154896A	1995-06-16
JP2002159091A	2002-05-31
JPH01225299A	1989-09-08
JP2002078082A	2002-03-15

Other References: