Sounding Device Elastic Support with Dual Force Arms

Solution Overview

Problem

The existing sounding devices in electronic speaker products have a limited number of force arms in their elastic pieces, leading to easy breakage, reduced reliability, and shortened service life.

Innovation Solution

The sounding device incorporates elastic support assemblies with dual force arms, comprising first and second fixed arms, first and second elastic arms, and a framework that connects the diaphragm with the voice coil, enhancing flexibility and reducing the likelihood of breakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the number of force arms of the elastic piece is kept small, then the device complexity is reduced, but the reliability deteriorates because the elastic piece is easily broken

Engineering Contradiction:

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The elastic piece is segmented into multiple force arms (first fixed arms, second fixed arms, first elastic arms, second elastic arms) that are distributed around the voice coil. This segmentation allows the elastic piece to better distribute mechanical stress and resist breakage, thereby improving reliability without requiring a single overly complex structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The elastic support assembly transitions from a simple single-plane structure to a multi-dimensional configuration with force arms extending in different directions (first fixed arms and second fixed arms in different orientations). This dimensional expansion provides multiple load paths and improves reliability by distributing stress across multiple dimensions.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Duration of action of stationary object

If the elastic piece has more force arms, then the reliability is improved, but the device complexity increases

Engineering Contradiction:

Core Design Contradiction:

Duration of action of stationary objectVSDevice complexity

Solution Approach 1:

The elastic piece is divided into multiple segmented force arms (first elastic arms connecting first fixed arms to second fixed arms, second elastic arms providing additional support). This segmentation extends the service life by distributing mechanical stress across multiple smaller elements rather than concentrating it in a single structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The elastic support assembly uses force arms arranged in different spatial dimensions and orientations. This multi-dimensional arrangement provides redundant load paths that extend the service life of the device while maintaining a manageable structural complexity through systematic geometric distribution.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If the elastic piece structure is simplified, then the ease of manufacture is improved, but the reliability deteriorates due to easy breakage

Engineering Contradiction:

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The elastic piece is segmented into standardized force arm components that can be manufactured using consistent processes. Each force arm (first elastic arms, second elastic arms) follows a similar structural pattern, allowing for standardized manufacturing techniques that maintain reliability while preserving ease of production.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The elastic support assembly employs force arms arranged in different dimensions and orientations, but each arm follows a consistent design pattern. This systematic multi-dimensional arrangement achieves enhanced reliability through geometric distribution while maintaining ease of manufacture by repeating proven structural motifs across different spatial orientations.

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

The design with dual force arms increases the flexibility and durability of the elastic pieces, improving the reliability and extending the service life of the sounding device by preventing easy breakage during operation.

Implementation Method 1

a voice coil inserted into the magnetic gap for driving the diaphragm to vibrate and produce sound

Methodology Applied

Scientific EffectElectromagnetic interaction: Lorentz Force

Implementation Method 2

The elastic pieces comprise first fixed arms fixed to the frame, second fixed arms spaced apart from the first fixed arms and supporting the voice coil, first elastic arms connecting the first fixed arms with the second fixed arms

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS11805369B2Sounding device

Publication Date: 2023.10.31

AI summary

A sounding device includes a frame, a vibration system, and a magnetic circuit system. The vibration system includes a diaphragm, a voice coil, and elastic support assemblies. The voice coil is inserted into a magnetic gap of the magnetic circuit system for driving the diaphragm to vibrate and produce sound. The elastic support assemblies are fixed to the frame and spaced apart from the diaphragm. The elastic support assemblies include elastic pieces. The elastic pieces include first fixed arms fixed to the frame, second fixed arms spaced apart from the first fixed arms and supporting the voice coil, first elastic arms connecting the first fixed arms with the second fixed arms, and second elastic arms connecting the first elastic arms with the second fixed arms. Compared with the related art, the sounding device has long service life and high reliability.