公开(公告)号：US10484794B2

公开(公告)日：2019-11-19

申请号：US16031496

申请日：2018-07-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tetsushi Itano ,  Seiji Takagi ,  Kenji Endou ,  Kazuaki Nishimura ,  Makoto Kurozawa

IPC: H04R7/12 ,  H04R31/00 ,  B29C45/00 ,  B29C45/56 ,  B29K23/00 ,  B29K309/10 ,  B29K509/08 ,  B29L31/38

Abstract: A loudspeaker diaphragm includes resin and hollow glass member particles contained in the resin. Further, a loudspeaker includes the above-described loudspeaker diaphragm, a magnetic circuit, a frame connected to the magnetic circuit, and a voice coil body having one end connected to the loudspeaker diaphragm and the other end disposed inside a magnetic gap in the magnetic circuit.

公开(公告)号：US11582557B2

公开(公告)日：2023-02-14

申请号：US17211114

申请日：2021-03-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tetsuya Koyanagi ,  Tetsushi Itano ,  Kazuaki Nishimura ,  Makoto Kurozawa ,  Ryouichi Uemoto ,  Hiroki Sano

IPC: H04R7/12 ,  H04R7/20 ,  H04R31/00

Abstract: A speaker diaphragm includes an edge formed from an elastomer, and a diaphragm body that is to be joined to the edge. A joint between the edge and the diaphragm body includes a melting portion between the edge and the diaphragm body.