# US 11,445,292 B2 · Speaker system and vehicle door

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- Number: US 11,445,292 B2
- Document ID: US11445292B2
- Status: Granted
- Kind: B2
- Application number: 17/073,173
- Filed: 2018-04-17
- Published: 2021-08-26
- Granted: 2022-09-13
- Earliest claimed: 2018-04-17
- Assignees: Yamaha Corporation
- Applicants: YAMAHA Corporation
- Inventors: Yoshikazu Honji; Hideki Harada
- Web page: https://patentgrep.com/patent/US11445292B2

## CPC

- H04R 1/345: {for loudspeakers}
- B60J 5/0413: {Inner panel, e.g. characterised by carrying components}
- B60R 11/0217: {for loud-speakers}
- B60R 13/0243: {Doors}
- H04R 1/025: {Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture}
- B60R 2011/0021: {Doors}
- H04R 2499/13: Acoustic transducers and sound field adaptation in vehicles
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)
- B60J: WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES (fastening, suspending, closing, or opening of such devices E05)
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR

## Abstract

Disclosed is a speaker system that includes a first panel that is an outer plate of a vehicle door, a second panel that is disposed on a vehicle interior side of the vehicle door, a third panel that is disposed between the first panel and the second panel, a speaker unit that has a sound emitting surface for emitting a sound toward a vehicle interior, and spacers that are disposed between the speaker unit and the third panel.

## Claims

### Claim 1

A speaker system, comprising:
a first panel that is an outer plate of a vehicle door;
a second panel that is disposed on a vehicle interior side of the vehicle door, wherein the second panel corresponds to a door trim of the vehicle door;
a third panel that is disposed between the first panel and the second panel;
a speaker unit that has a sound emitting surface configured to emit a sound toward a vehicle interior, wherein
a distance between a surface of the door trim and a surface of the speaker unit is between 0.5 mm and 10 mm,
the surface of the door trim is on a side toward the third panel, and
the surface of the speaker unit is on a side toward the door trim;
spacers that are disposed between the speaker unit and the third panel; and
a first elastic body between the surface of the door trim and the surface of the speaker unit.

### Claim 2 (depends on 1)

The speaker system according to claim 1, wherein
a portion of the second panel is opposite to the sound emitting surface of the speaker unit; and
the portion of the second panel is recessed toward the third panel.

### Claim 3 (depends on 1)

The speaker system according to claim 1, wherein
the spacers are cylindrically shaped,
the speaker unit further includes a speaker main body and a housing,
the housing is adapted to house the speaker main body,
the housing includes mounting holes, and
the speaker unit is mounted on the third panel by mounting screws inserted through the mounting holes and the spacers.

### Claim 4

A vehicle door, comprising:
a speaker system including:
a first panel that is an outer plate of the vehicle door;
a second panel that is disposed on a vehicle interior side of the vehicle door, wherein the second panel corresponds to a door trim of the vehicle door;
a third panel that is disposed between the first panel and the second panel;
a speaker unit that has a sound emitting surface configured to emit a sound toward a vehicle interior, wherein
a distance between a surface of the door trim and a surface of the speaker unit is between 0.5 mm and 10 mm,
the surface of the door trim is on a side toward the third panel, and
the surface of the speaker unit is on a side toward the door trim;
spacers that are disposed between the speaker unit and the third panel; and
an elastic body between the surface of the door trim and the surface of the speaker unit.

### Claim 5 (depends on 1)

The speaker system according to claim 1, further comprising a sound absorbing material on a surface of the first panel.

### Claim 6 (depends on 1)

The speaker system according to claim 1, wherein the third panel includes an opening covered by a synthetic resin film.

### Claim 7 (depends on 1)

The speaker system according to claim 1, further comprising at least one coupling mechanism configured to couple the second panel and the third panel, wherein
the at least one coupling mechanism includes:
a cylindrical shaped receiver member on the third panel, and
a second elastic body on the second panel, and
the second elastic body is configured to fit into the cylindrical shaped receiver member.

### Claim 8 (depends on 1)

The speaker system according to claim 1, wherein each of the first panel and the third panel includes one of an aluminum alloy or a carbon material.

### Claim 9 (depends on 1)

The speaker system according to claim 1, wherein the second panel includes a synthetic resin molded plate.

### Claim 10 (depends on 1)

The speaker system according to claim 1, further comprising a third elastic body between the third panel and the speaker unit, wherein the third elastic body has an opening that is connected to an opening in the third panel.

### Claim 11 (depends on 1)

The speaker system according to claim 1, wherein
the speaker unit comprising a housing,
the housing has a brim on a rear side of the speaker unit toward the third panel,
the brim is configured to mount the speaker unit to the third panel, and
the spacers extend from the third panel to the rear side of the housing.