Electroacoustic transducer and mounting structure of same

Patent metadata

Field	Value
Publication number	US-12506992-B2
Application number	US-202318326413-A
Country	US
Kind code	B2
Filing date	May 31, 2023
Priority date	May 31, 2022
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

Provided is an electroacoustic transducer capable of improving the reliability of a drive circuit and the sound quality. The electroacoustic transducer includes: a vibration unit constituting a part of a partition defining a cabin space of a vehicle; a magnetic circuit on an outside of the cabin space; and an electrical element configured to process an electrical signal for vibrating the vibration unit. The electrical element is located in the cabin space.

First claim

What is claimed is:

1 . An electroacoustic transducer for a vehicle having a partition defining an interior cabin space of the vehicle, the electroacoustic transducer comprising:
a frame having a circumferential flange extending radially outwardly and separating the frame into an interior space portion and an exterior space portion; a vibration unit connected to the exterior space portion of the frame; a magnetic circuit connected to the exterior space portion of the frame; and an electrical element carried by the interior space portion of the frame and configured to process an electrical signal for vibrating the vibration unit; wherein the frame is configured to connect to the partition so that the electrical element is positioned in the interior cabin space.

2 . The electroacoustic transducer of claim 1 , further comprising
a conductive member connected to the electrical element, wherein the conductive member penetrates the frame.

3 . The electroacoustic transducer of claim 2 , wherein the electrical element is fixed to the interior space portion of the frame.

4 . The electroacoustic transducer of claim 2 , wherein the conductive member is integral with the frame.

5 . The electroacoustic transducer of claim 1 , wherein the frame includes a support configured to support the electrical element.

6 . The electroacoustic transducer of claim 1 , wherein the electrical element does not intersect with a virtual boundary extending from an outer edge of the frame in a direction in which the vibration unit vibrates.

7 . The electroacoustic transducer of claim 1 , wherein the electrical element is located near a connector formed on the frame.

8 . The electroacoustic transducer of claim 1 , wherein the electrical element functions as a filter.

9 . The electroacoustic transducer of claim 1 , wherein the electrical element is a capacitor.

10 . The electroacoustic transducer of claim 1 , wherein the frame includes an outer circumferential cylinder configured to be connected to the partition, and the electrical element is located closer to an outer circumferential surface of the outer circumferential cylinder.

11 . The electroacoustic transducer of claim 1 , wherein the electrical signal passes through both sides of the partition defining the interior cabin space.

12 . A mounting structure of an electroacoustic transducer, wherein the electroacoustic transducer of claim 1 is configured to be inserted into a hole of the partition and connected to the partition in a watertight manner.

Assignees

• Foster Electric Co Ltd

Inventors

• Machida Kentaro

Classifications

• H04R1/44

  Special adaptations for subaqueous use, e.g. for hydrophone · CPC title

• H04R3/14

  Cross-over networks · CPC title

• H04R2499/13

  Acoustic transducers and sound field adaptation in vehicles · CPC title

• H04R2400/11

  Aspects regarding the frame of loudspeaker transducers · CPC title

• H04R9/02

  Details · CPC title