Speaker Grill Diffusion Plate Slit Support Design

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Solution Overview

Problem

Existing speaker grills with irregular outer surfaces and cloth coverings face challenges in maintaining desired design aesthetics while preventing sound quality deterioration due to support structures blocking sound-emitting holes.

Innovation Solution

A speaker grill design featuring a diffusion plate with a concave shape, a base, and support portions with slits that allow sound transmission while maintaining the cloth body's designed shape, preventing sinking and enhancing sound quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If a support portion is provided on the speaker grill to maintain the cloth body's designed shape, then the design aesthetics are improved, but the sound-emitting holes are blocked and sound quality deteriorates

Engineering Contradiction:

Improvecloth body surface shapeVSAvoidsound quality

Core Design Contradiction:

ShapeVSReliability

Solution Approach 1:

The support portion is designed with multiple slits that allow sound to pass through while maintaining the structural support function. This porous structure enables the support portion to both maintain the cloth body's designed shape and allow sound transmission, resolving the contradiction between aesthetic design and sound quality.

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The support portion is divided into multiple segmented structures with slits between them. This segmentation allows the support portion to provide structural support while the gaps between segments enable sound transmission, thus maintaining both design aesthetics and sound quality.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the speaker grill has irregularities on the outer surface to enhance design, then design versatility is improved, but the cloth body surface becomes irregular and design aesthetics are compromised

Engineering Contradiction:

Improvedesign shape versatilityVSAvoidcloth body surface regularity

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The diffusion plate is designed with a concave shape in the sound-emitting direction, creating a curved surface that allows the cloth body to drape smoothly. This dimensional change enables the support structure to accommodate various design shapes while maintaining a smooth cloth body surface.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The support portion is strategically positioned and shaped to provide localized support where needed, with slits oriented to follow the contours of the diffusion plate. This local quality approach allows the structure to adapt to different design shapes while maintaining overall surface regularity.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12058483B2Speaker grill and speaker device

Publication Date: 2024.08.06 YAMAHA CORP

AI summary

A speaker grill includes a diffusion plate, a base, and a support portion. The diffusion plate forms an opening facing in a sound-emitting direction of a speaker and that is arranged on an outer side of the opening. 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 covers an outer surface of the base.