Speaker Module Housing Capacitance Feedback Integration

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Solution Overview

Problem

The technology using capacitance to feed back vibration displacement of a vibration diaphragm cannot be applied to integrated speaker modules, as it requires molding a steel sheet on the upper housing first, hindering the improvement of acoustic performance.

Innovation Solution

A speaker module housing design featuring an upper housing, a lower housing, an annular connection member, and a plate member, where the annular connection member is fixedly connected to the speaker unit assembling hole through injection molding, allowing all components of the speaker unit to be assembled, and the plate member is electrically connected to the annular connection member for capacitance feedback.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a steel sheet is molded through injection on the upper housing first to enable capacitance feedback, then the acoustic performance is improved, but the integrated speaker module cannot be assembled because all components cannot be assembled after the steel sheet is molded

Engineering Contradiction:

Improveacoustic performanceVSAvoidassembly process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The annular connection member is divided into two functional portions: a fixing portion for mechanical attachment to the upper housing and a connection portion for electrical connection to the plate member. This segmentation allows the fixing portion to be integrated into the housing while the connection portion remains accessible for electrical connections, resolving the conflict between maintaining acoustic performance and enabling assembly.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The annular connection member extends in the radial direction from the inner wall of the upper housing, creating a three-dimensional structure that separates the fixing function (at the inner wall) from the electrical connection function (at the outer edge). This dimensional arrangement allows both functions to coexist without interfering with the assembly process.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Strength

If the annular connection member is fixedly connected to the upper housing, then the connection strength is improved, but the production efficiency may be reduced due to additional manufacturing steps

Engineering Contradiction:

Improveconnection strengthVSAvoidproduction efficiency

Core Design Contradiction:

StrengthVSProductivity

Solution Approach 1:

The fixing portion of the annular connection member is integrated with the upper housing through injection molding, combining two manufacturing steps into one. This merging ensures strong mechanical connection while maintaining production efficiency by eliminating separate assembly operations for the fixing portion.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The conductive adhesive serves as an intermediary material that simultaneously provides mechanical bonding and electrical conductivity. This dual-function mediator strengthens the connection between the connection portion and plate member while simplifying the manufacturing process by eliminating the need for separate mechanical fasteners and electrical connections.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

Enables the application of capacitance feedback technology to integrated speaker modules, improving acoustic performance and enhancing connection strength and production efficiency by using injection molding and conductive adhesive connections.

Implementation Method 1

The fixing portion of the annular connection member is fixedly connected with the speaker unit assembling hole

Methodology Applied

Scientific EffectInjection molding:

Implementation Method 2

The connection portion of the annular connection member is electrically connected with the plate member

Methodology Applied

Scientific EffectConductive adhesive: Conduction (electrical)

Implementation Method 3

the technology that uses capacitance to feed back a vibration displacement of a vibration diaphragm

Methodology Applied

Scientific EffectCapacitance: Capacitance

Data Source

PatentUS10582323B2Speaker module housing and manufacturing method thereof

Publication Date: 2020.03.03 GOERTEK INC

AI summary

Disclosed are a speaker module housing and a manufacturing method thereof. The speaker module housing comprises an upper housing, a lower housing, an annular connection member and a plate member. The annular connection member comprises a fixing portion and a connection portion. A speaker unit assembling hole is formed in the upper housing. The fixing portion of the annular connection member is fixedly connected with the speaker unit assembling hole. The connection portion of the annular connection member is electrically connected with the plate member.