Weaving Suspension for Linear Vibration Control

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Solution Overview

Problem

Conventional acoustic devices face issues with uncontrolled vibration diaphragm movement, leading to unbalanced voice coil movement, potential damage, and suboptimal sound reproduction due to the U-shaped suspension allowing lateral movement and uneven displacements, which affects sound quality especially at low frequencies.

Innovation Solution

A vibration unit with a weaving suspension comprising radially extended reinforcing ribs and displacement chambers that form a weaving-like structure, preventing lateral movement and ensuring linear reciprocation, thereby stabilizing the vibration member's movement and enhancing sound quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a U-shaped suspension is used to enable reciprocating movement of the vibration diaphragm, then the vibration diaphragm can move in response to the voice coil, but the suspension allows unwanted lateral movement of the vibration diaphragm

Engineering Contradiction:

Improvereciprocating movement capabilityVSAvoidlateral movement control

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The suspension is divided into multiple independent strips arranged radially around the vibration diaphragm. Each strip acts as an independent constraint element, collectively providing both reciprocating movement capability and lateral movement restriction through their coordinated arrangement

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The suspension strips are arranged radially in multiple directions rather than forming a single U-shape. This multi-dimensional arrangement allows the suspension to constrain lateral movements in all radial directions while maintaining reciprocating movement freedom along the acoustic axis

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If the suspension allows lateral movement of the vibration diaphragm, then the vibration diaphragm can be easily driven, but the voice coil becomes unbalanced and may scratch the speaker frame

Engineering Contradiction:

Improvevibration diaphragm driveabilityVSAvoidvoice coil protection

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The suspension system is segmented into multiple radial strips that independently constrain the vibration diaphragm. This segmentation distributes the constraint forces evenly, preventing unbalanced lateral movements that would cause voice coil misalignment and potential damage to the speaker frame

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The suspension strips are designed with specific elastic properties and radial arrangements that change the mechanical constraints on the vibration diaphragm. This parameter optimization ensures sufficient driveability while maintaining voice coil alignment and preventing contact with the speaker frame

Inventive Principle:

Principle #35Parameter changes

3Ease of operation

If the suspension has a U-shaped cross section, then the vibration diaphragm can be suspended, but the upward displacement is not the same as the downward displacement

Engineering Contradiction:

Improvevibration diaphragm suspensionVSAvoidreciprocating movement linearity

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The suspension strips are arranged asymmetrically in radial directions rather than forming a symmetric U-shape. This asymmetric radial arrangement creates balanced elastic constraints that ensure equal upward and downward displacements, achieving linear reciprocating movement while maintaining easy suspension

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The elastic properties, dimensions, and radial angles of the suspension strips are optimized to change the mechanical characteristics of the system. This parameter tuning ensures that the suspension provides equal resistance to upward and downward movements, achieving precise linear reciprocating motion

Inventive Principle:

Principle #35Parameter changes

4Ease of manufacture

If the peak of the suspension protrudes upward from the vibration diaphragm, then the vibration diaphragm can be coupled with the suspension, but the protruding portion requires larger space and is easily damaged

Engineering Contradiction:

Improvesuspension couplingVSAvoidinstallation space

Core Design Contradiction:

Ease of manufactureVSVolume of moving object

Solution Approach 1:

Instead of having the suspension peak protrude upward from the vibration diaphragm, the suspension strips are configured to connect radially at or below the diaphragm surface. This inverted configuration eliminates the protruding portion, reducing installation space and preventing damage from external objects while maintaining effective coupling

Inventive Principle:

Principle #13The other way round (Inversion)

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 solution provides improved sound quality, increased durability, and reduced manufacturing costs by ensuring the vibration member moves in a linear direction, minimizing installation space, and maintaining a flat profile, while being adaptable to compact designs without complex structures.

Implementation Method 1

the suspension is made of elastic material and is formed in U-shape such that the suspension provides an elastic force to enable the vibration diaphragm to be reciprocatingly moved

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS10129650B2Vibration unit for acoustic arrangement

Publication Date: 2018.11.13 NINGBO SHENGYA ELECTRONICS

AI summary

A vibration unit for an acoustic arrangement includes an encircling frame, a vibration member, and a weaving suspension extended between the vibration member and the encircling frame for enabling the vibration member to be reciprocatingly moved. The weaving suspension includes a plurality of reinforcing ribs radially and outwardly extended from the vibration member to the encircling frame to form a weaving-like structure, such that the vibration member is prohibited to move along a rib extending direction of each of the reinforcing ribs to ensure the vibration member to be reciprocatingly moved in a linear direction.