IP Library Granted Patent US 11,240,575
Granted Patent B2
US 11,240,575 · App. 17/125,421 · Granted Feb 1, 2022

Speaker grill and speaker device

Inventors: Hiroyuki Shibakusa (Hamamatsu, JP); Kazunori Tanaka (Hamamatsu, JP)
Assignee: Yamaha Corporation
H04R1/023H04R1/026H04R1/345
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Quick Facts
Patent No.
US 11,240,575
App. No.
17/125,421
Granted
Feb 1, 2022
Kind
B2
Abstract

A speaker grill includes a diffusion plate, a base, and a support portion. The diffusion plate forms an opening facing a speaker and is arranged on an outer side of the opening so as to form a concave shape in a sound-emitting direction of the speaker. The base supports the diffusion plate at an outer circumference thereof. The support portion is provided at a front surface of the diffusion plate in the sound-emitting direction, having a support surface that covers at least a portion of the front surface of the diffusion plate, and having a plurality of partition walls forming slits in the sound-emitting direction. The support surface forms a virtual surface that covers an outer surface of the base.

Claims (29)

1. A speaker grill comprising:

a diffusion plate that forms an opening facing a speaker and that is arranged on an outer side of the opening so as to form a concave shape in a sound-emitting direction of the speaker;

a base that supports the diffusion plate at an outer circumference thereof; and

a support portion that is provided at a front surface of the diffusion plate in the sound-emitting direction, having a support surface that covers at least a portion of the front surface of the diffusion plate, and having a plurality of partition walls forming slits in the sound-emitting direction, wherein

the support surface forms a virtual surface that covers an outer surface of the base.

2. The speaker grill according to claim 1 , wherein

the base has a flat plate extending in a first direction and a curved plate connected to the flat plate in a second direction that is orthogonal to the first direction;

the virtual surface has a flat surface and a curved surface along the outer surface of the base; and

the support surface extends along the curved surface to the flat surface.

3. The speaker grill according to claim 1 , wherein

the support portion comprises a plurality of partition walls rising from the diffusion plate.

4. The speaker grill according to claim 1 , wherein

the diffusion plate, the base, and the support portion are integrally formed.

5. The speaker grill according to claim 1 , wherein

the base has a flat plate extending in a first direction and a curved plate connected to the flat plate in a second direction that is orthogonal to the first direction; and

a width of the diffusion plate in the second direction is greater than a width of the flat plate in the second direction.

6. The speaker grill according to claim 1 , wherein

the base has a flat plate extending in a first direction and a curved plate connected to the flat plate in a second direction that is orthogonal to the first direction; and

a width of the diffusion plate in the second direction is 90% or more of a width of the base in the second direction.

7. The speaker grill according to claim 1 , further comprising: a protection portion that covers at least a part of the opening.

8. The speaker grill according to claim 1 , further comprising: a cloth body that covers the outer surface of the base and the support surface of the support portion.

9. The speaker grill according to claim 8 , wherein a direction in which the fibers constituting the cloth body extend coincides with a direction in which the slits extend.

10. A speaker device comprising:

a speaker; and

a speaker grill covering the speaker, the speaker grill including:

a diffusion plate that forms an opening facing a speaker and that is arranged on an outer side of the opening so as to form a concave shape in a sound-emitting direction of the speaker;

a base that supports the diffusion plate at an outer circumference thereof; and

a support portion that is provided at a front surface of the diffusion plate in a sound-emitting direction, having a support surface that covers at least a portion of a front surface of the diffusion plate, and having a plurality of partition walls forming slits in the sound-emitting direction, wherein

the support surface forms a virtual surface that covers the outer surface of the base.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 18, 2020
From: SHIBAKUSA, HIROYUKI; TANAKA, KAZUNORI
To: YAMAHA CORPORATION
Reel/Frame 054688/0636 →
Priority Claims (1)
JP JP2019-236813 · Dec 26, 2019 · national
Continuity (1)
Related Publication 20210204045A1 · Jul 1, 2021
Cited By (1)
US 12,309,546