Speaker Structure With Pre-Force Elastic Component
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Solution Overview
Problem
As electronic devices become smaller and thinner, achieving good acoustical quality while maintaining a reduced speaker volume is challenging due to the increase in air pressure and elastic coefficient within the speaker box, leading to poor low-frequency response.
Innovation Solution
A speaker structure with a speaker unit and an elastic component, where the air pressure inside the speaker box is lower than outside, and the elastic component produces a pre-force to maintain the vibrating assembly at equilibrium, compensating for reduced air pressure and volume, thus maintaining acoustical quality without increasing the elastic coefficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the volume of the speaker box is decreased to make electronic devices smaller and thinner, then the volume of the speaker structure is reduced, but the elastic coefficient of the air in the speaker box is increased, causing poor low-frequency response and degraded acoustical quality
Solution Approach 1:
The patent introduces an elastic component that generates a pre-force to change the force parameter in the speaker system. This pre-force compensates for the increased elastic coefficient of air in the reduced-volume speaker box, allowing the system to maintain good low-frequency response and acoustical quality despite the volume reduction. The elastic component's pre-force effectively adjusts the mechanical parameters of the system to counteract the adverse effects of reduced air volume.
2Volume of moving object
If the volume of the speaker box is decreased, then the speaker structure becomes more compact, but the low-frequency response with resonant frequency becomes poor
Solution Approach 1:
The elastic component introduces a pre-force that changes the mechanical parameters of the vibrating assembly system. This pre-force compensation mechanism allows the system to maintain its resonant frequency characteristics and low-frequency response performance even when the speaker box volume is reduced, effectively decoupling the relationship between volume reduction and low-frequency response degradation.
3Volume of moving object
If the elastic coefficient of air in the speaker box is increased due to reduced volume, then the speaker box can be smaller, but the acoustical quality becomes poor
Solution Approach 1:
The elastic component acts as a counterbalancing element that generates a pre-force to offset the increased elastic coefficient of the compressed air in the reduced-volume speaker box. This counter-force mechanism allows the system to neutralize the adverse effects of high air elastic coefficient, maintaining good acoustical quality despite the reduced volume and increased air density.
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 effectively maintains good acoustical quality and low-frequency response while reducing the speaker volume by using the elastic component to balance the vibration of the vibrating assembly, even with decreased air pressure and volume.
Implementation Method 1
the elastic component produces a pre-force correspondingly, the pre-force and the air pressure inside the speaker box equal to the air pressure outside the speaker box to maintain the first vibrating assembly at an equilibrium position
Implementation Method 2
the first vibrating assembly vibrates to push the air in the speaker box and drive the elastic component to generate a pre-force correspondingly
Data Source
AI summary
A speaker structure includes a speaker box, a speaker unit, and an elastic component. An air pressure inside the speaker box is lower than that outside the speaker box. The speaker unit is disposed on the speaker box and includes a first vibrating assembly. The elastic component is disposed in the speaker box and connected to the first vibrating assembly and the speaker box in the speaker unit. When the speaker unit operates, the first vibrating assembly of the speaker unit vibrates, and the elastic component produces a pre-force correspondingly, the total pressure of the pre-force and the air pressure inside the speaker box equals to the air pressure outside the speaker box to balance the first vibrating assembly at an equilibrium position.