Flat Loudspeaker Module Rear Mounting for Vibration Control

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Solution Overview

Problem

There is a need for flat loudspeaker modules that can be hung on the wall while ensuring outstanding sound quality, which requires the development of a flat loudspeaker module with improved integration into a housing to reduce disturbing vibrations and enhance acoustic coupling.

Innovation Solution

The proposed solution involves a flat loudspeaker module with a loudspeaker chassis that has fastening means for attaching the loudspeaker driver to the rear side of the housing, which reduces vibrations and allows for improved cooling through a central air duct. Additionally, the module features a metal plate connected to the loudspeaker driver that covers an opening in the rear wall of the housing, providing indirect attachment to the housing and optimizing installation and maintenance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the loudspeaker driver is attached directly to the front side of the housing, then the integration is simple, but disturbing vibrations occur and acoustic coupling is poor

Engineering Contradiction:

Improveintegration simplicityVSAvoiddisturbing vibrations

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The patent inverts the conventional attachment approach by moving the loudspeaker driver attachment from the front side to the rear side of the housing. The rear side of the loudspeaker chassis is attached to the front side of the housing via a metal plate, which inverts the traditional front-attachment configuration and thereby eliminates disturbing vibrations while maintaining integration simplicity.

Inventive Principle:

Principle #13The other way round (Inversion)

2Device complexity

If the loudspeaker driver is attached directly to the housing, then the structure is simple, but acoustic coupling is poor

Engineering Contradiction:

Improvestructural simplicityVSAvoidacoustic coupling

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent introduces a metal plate as an intermediary element between the loudspeaker chassis and the housing. This metal plate serves as a mediator that improves acoustic coupling by providing a rigid, acoustically favorable connection surface, while the overall structure remains simple due to the plate's thin profile and straightforward attachment mechanism.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Strength

If a thick rear wall is used in the housing, then the driver can be securely mounted, but the installation depth increases

Engineering Contradiction:

Improvemounting securityVSAvoidinstallation depth

Core Design Contradiction:

StrengthVSLength of stationary object

Solution Approach 1:

The patent employs a thin metal plate rather than a thick structural wall for mounting the loudspeaker driver. This thin film approach provides sufficient mounting security through the plate's rigidity and its connection to the housing, while significantly reducing the required installation depth compared to using a thick rear wall.

Inventive Principle:

Principle #30Flexible shells and thin films

4Object-generated harmful factors

If the loudspeaker driver is positioned deep in the housing, then vibration isolation is improved, but the module depth increases

Engineering Contradiction:

Improvevibration isolationVSAvoidmodule depth

Core Design Contradiction:

Object-generated harmful factorsVSLength of stationary object

Solution Approach 1:

The patent changes the spatial dimension of the attachment approach by moving from front-side attachment to rear-side attachment. This dimensional shift allows the loudspeaker driver to be positioned optimally for vibration isolation without increasing the front-to-back depth of the module, as the attachment occurs at the rear surface rather than requiring internal front-side space.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration achieves improved sound quality by reducing vibrations and enhancing acoustic coupling, while also allowing for efficient cooling and reduced installation depth, making it suitable for wall-hung applications.

Implementation Method 1

a magnetic driver (9) which is coupled to the diaphragm (12) for the purpose of exciting vibration

Methodology Applied

Scientific EffectElectromagnetic interaction: Electromagnetic Induction

Implementation Method 2

At least one of the loudspeakers (7) can have a central air duct (31) extending from the loudspeaker rear side to the loudspeaker front side forming the sound outlet side, and through the magnetic driver (9)

Methodology Applied

Scientific EffectForced convection: Forced Convection

Data Source

PatentUS20250150738A1Flat loudspeaker module and arrangement having sound-influencing modules

Publication Date: 2025.05.08 ALEKSANDROV SVETLOMIR

AI summary

The present invention discloses a flat loudspeaker module (1) having a loudspeaker module housing (2) and at least one loudspeaker driver (7), wherein the at least one loudspeaker driver (7) in each case has a loudspeaker chassis (8), a diaphragm (12) and a magnetic driver (9) which is coupled to the diaphragm (12) for the purpose of exciting vibrations and is arranged in front of the diaphragm (12) on the loudspeaker front side forming the sound outlet side. The loudspeaker chassis (8) has fastening means (13) for fastening the loudspeaker to the loudspeaker module housing (2) on the loudspeaker rear side diametrically opposite the sound outlet side.