公开(公告)号：US20210306755A1

公开(公告)日：2021-09-30

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

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.

公开(公告)号：US20230319482A1

公开(公告)日：2023-10-05

申请号：US18206498

申请日：2023-06-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuma FUJIOKA ,  Kengo TAKEDA ,  Tetsushi ITANO

IPC: H04R9/06 ,  H04R9/02 ,  H04R9/04

CPC classification number: H04R9/06 ,  H04R9/027 ,  H04R9/046 ,  H04R9/043

Abstract: A loudspeaker including a magnetic circuit including a magnetic gap, a voice coil body inserted in the magnetic gap, a diaphragm attached to the voice coil body, transmission members arranged on a lateral side of the extend magnetic circuit along the magnetic circuit with a predetermined gap to transmit an electric signal to be input to the voice coil body, and a housing made of a resin and integrated with the magnetic circuit and the transmission members. The transmission members include externally exposed portions and internally exposed portions.

公开(公告)号：US20240244379A1

公开(公告)日：2024-07-18

申请号：US18404304

申请日：2024-01-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Mitsukazu KUZE ,  Tetsushi ITANO ,  Ryouichi UEMOTO ,  Hiroyuki MORIMOTO

IPC: H04R9/06 ,  H04R9/02

CPC classification number: H04R9/063 ,  H04R9/025

Abstract: A diaphragm including at least a first portion, a second portion, and a third portion that are arranged around a predetermined reference axis extending in a vibration direction, and each have a different cross-sectional shape along a plane that includes the reference axis, in which the cross-sectional shape of the first portion is an arc having a first radius of curvature, the cross-sectional shape of the second portion is an arc having a second radius of curvature different from the first radius of curvature, and the cross-sectional shape of the third portion is a part of an ellipse.

公开(公告)号：US20230292050A1

公开(公告)日：2023-09-14

申请号：US18116182

申请日：2023-03-01

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Tetsuya KOYANAGI ,  Tetsushi ITANO ,  Kazuaki NISHIMURA

IPC: H04R7/12 ,  H04R9/06 ,  H04R9/04 ,  H04R9/02 ,  H04R31/00 ,  H04R1/02

CPC classification number: H04R7/12 ,  H04R9/06 ,  H04R9/045 ,  H04R9/025 ,  H04R31/003 ,  H04R1/025 ,  H04R2307/023 ,  H04R2400/11 ,  H04R2201/028 ,  H04R2499/13

Abstract: A loudspeaker diaphragm that includes a resin containing silica derived from seed coats and a compatibilizer as an additive.