# US 2021/0243520 A1 · Speaker unit

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- Number: US 2021/0243520 A1
- Document ID: US20210243520A1
- Status: Published application
- Kind: A1
- Application number: 17/115,914
- Filed: 2020-12-09
- Published: 2021-08-05
- Earliest claimed: 2020-02-04
- Assignees: DENSO TEN Limited
- Applicants: DENSO TEN Limited
- Inventors: Yuuichi NAKAJIMA; Kazuhiko HAMADA; Keiichiroh TANAKA; Migiwa GOTO
- Web page: https://patentgrep.com/patent/US20210243520A1

## CPC

- H04R 1/2896: {for loudspeaker transducers}
- H04R 1/403: {loud-speakers}
- H04R 1/025: {Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture}
- H04R 1/026: {Supports for loudspeaker casings}
- H04R 1/24: Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
- H04R 1/288: {for loudspeaker transducers}
- H04R 9/063: {using a plurality of acoustic drivers (H04R1/24 and H04R1/403 take precedence)}
- H04R 7/12: Non-planar diaphragms or cones
- H04R 7/18: at the periphery
- H04R 9/025: {Magnetic circuit}
- H04R 9/06: Loudspeakers
- H04R 2400/11: Aspects regarding the frame of loudspeaker transducers
- 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)

## Abstract

A speaker unit has at least a part that is installed in a first space separated by a wall from a second space in which a sound to be output by the speaker unit is listened to. The speaker unit includes a first speaker, a second speaker, a speaker connector that interconnects the first speaker and the second speaker so that back surfaces of the first speaker and the second speaker oppose each other, a first spacer that interconnects the first speaker and a first opening of the wall, and a second spacer that interconnects the second speaker and a second opening of the wall. The first speaker, the second speaker, the speaker connector, the first spacer and the second spacer are integrally connected to each other.

## Claims

### Claim 1

A speaker unit having at least a part that is installed in a first space separated by a wall from a second space in which a sound to be output by the speaker unit is listened to, the speaker unit comprising:
a first speaker;
a second speaker;
a speaker connector that interconnects the first speaker and the second speaker so that back surfaces of the first speaker and the second speaker oppose each other;
a first spacer that interconnects the first speaker and a first opening of the wall; and
a second spacer that interconnects the second speaker and a second opening of the wall, wherein
the first speaker, the second speaker, the speaker connector, the first spacer and the second spacer are integrally connected to each other.

### Claim 2 (depends on 1)

The speaker unit according to claim 1, further comprising:
a connecting member that interconnects the first spacer and the second spacer.

### Claim 3 (depends on 1)

The speaker unit according to claim 1, further comprising:
a stay that holds the speaker connector via a connector cushioning material having elasticity.

### Claim 4 (depends on 1)

The speaker unit according to claim 1, further comprising:
a cover that surrounds the first spacer and the second spacer and forms a back-surface space of each of the first speaker and the second speaker, wherein
the cover is provided with a duct that communicates the back-surface space with other spaces different from the second space in which the sound to be output by the speaker unit is listened to.

### Claim 5 (depends on 1)

The speaker unit according to claim 1, wherein
the first spacer is connected to the first opening via a first speaker cushioning material and the second spacer is connected to the second opening via a second speaker cushioning material.

### Claim 6 (depends on 5)

The speaker unit according to claim 5, wherein
the first spacer is passed through the first opening and the second spacer is passed through the second opening.

### Claim 7 (depends on 1)

The speaker unit according to claim 1, wherein
the wall is an interior wall of a vehicle or of a building.

### Claim 8 (depends on 5)

The speaker unit according to claim 5, wherein
the wall includes a protrusion protruded to a vehicle cabin or a room in a building, the vehicle cabin or the room corresponding to the second space in which the second to be output by the speaker unit is listened to, and each of the first and second openings is provided in a surface opposite to the protrusion.