公开(公告)号：USD892788S1

公开(公告)日：2020-08-11

申请号：US29683127

申请日：2019-03-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Designer： Yusuke Oshima ,  Akira Asano

公开(公告)号：US09769571B2

公开(公告)日：2017-09-19

申请号：US14841786

申请日：2015-09-01

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira Asano ,  Mitsutaka Enomoto ,  Tomoyuki Matsunaga

IPC: H04R1/00 ,  H04R9/06 ,  H04R11/02 ,  H04R9/02

CPC classification number: H04R9/025 ,  H04R9/06 ,  H04R2499/11

Abstract: A loudspeaker includes two first magnetic portions arranged in parallel and a second magnetic portion disposed between the two first magnetic portions on a bottom plate. An annular top plate is provided to the two first magnetic portions and disposed in such a manner as to form a magnetic gap with respect to the second magnetic portion. The first magnetic portions and the second magnetic portion are magnetized in the opposite directions in a direction in which the bottom plate, the first magnetic portions and the top plate are stacked. The top plate includes two main bodies provided to the two first magnetic portions and two bending portions connecting between two first magnetic portions and bending toward the bottom plate.