Dual-Vibrating Speaker Diaphragm for Wider Frequency Response
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Solution Overview
Problem
Existing speakers, such as dynamic, moving coil, moving iron, and electrostatic types, suffer from poor sensitivity in high-frequency or low-frequency performance, with insufficient frequency response ranges and complex structures.
Innovation Solution
A speaker design incorporating a dual vibrating assembly system, comprising a first vibrating assembly driven by piezoelectric means and a second vibrating assembly driven by electromagnetic induction or piezoelectric means, with each assembly optimized for different frequency bands, allowing for complementary frequency response and independent signal input adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single type of speaker (dynamic, moving coil, moving iron, or electrostatic) is used, then the structure is simple, but the frequency response range is insufficient and sensitivity in high-frequency or low-frequency is poor
Solution Approach 1:
The patent combines a first vibrating assembly (piezoelectric) and a second vibrating assembly (electromagnetic or piezoelectric) into a single speaker structure. Both assemblies share a common diaphragm and housing, allowing the device to achieve full frequency band coverage by merging the complementary frequency responses of the two assemblies without requiring completely separate speaker systems
Solution Approach 2:
The patent divides the diaphragm into a first diaphragm part and a second diaphragm part, with each part driven by a different vibrating assembly. The first diaphragm part is optimized for high-frequency response while the second diaphragm part handles low-frequency response, allowing each segment to specialize in its optimal frequency range
2Adaptability or versatility
If multiple speaker types are combined to supplement frequency response, then the frequency response range is improved, but the structure becomes complicated and size increases
Solution Approach 1:
The patent places the first vibrating assembly and second vibrating assembly within a shared housing structure. The assemblies are nested within the same accommodating groove, with the first vibrating assembly positioned at the bottom and the second vibrating assembly positioned around its peripheral side, allowing both assemblies to occupy the same spatial envelope rather than requiring separate volumes
Solution Approach 2:
The common diaphragm serves multiple functions by being divided into two parts that are driven by different vibrating assemblies. The first diaphragm part responds to high-frequency signals from the piezoelectric assembly while the second diaphragm part responds to low-frequency signals from the electromagnetic or piezoelectric assembly, allowing a single diaphragm structure to handle the full frequency band
3Adaptability or versatility
If multiple speaker types are combined to supplement frequency response, then the frequency response range is improved, but the cost increases
Solution Approach 1:
The patent merges multiple vibrating assemblies into a unified speaker structure with shared components including the housing, diaphragm support structure, and electrical connections. This consolidation reduces the overall complexity compared to using completely separate speaker units, while still achieving full frequency band coverage through the complementary frequency responses of the first and second vibrating assemblies
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 dual vibrating assembly speaker achieves optimized frequency response and sound quality across the full frequency band, enhancing sensitivity and frequency range without increasing size or cost.
Implementation Method 1
The first vibrating assembly is arranged on the first diaphragm part, for driving the first diaphragm part. The first vibrating assembly vibrates through piezoelectric means
Implementation Method 2
The second vibrating assembly is arranged in the accommodating groove, for driving the second diaphragm part. The second vibrating assembly vibrates through electromagnetic induction
Data Source
AI summary
A speak includes a housing, a diaphragm, a first vibrating assembly, and a second vibrating assembly. The housing has an accommodating groove. The diaphragm is relatively arranged in the accommodating groove. The diaphragm includes a first diaphragm part and a second diaphragm part. The second diaphragm part is arranged around the first diaphragm part. The first vibrating assembly is arranged on the first diaphragm part, for driving the first diaphragm part. A movable space is formed between the first diaphragm part and the bottom of the accommodating groove. The second vibrating assembly is on the peripheral side of the movable space. The first vibrating assembly vibrating through piezoelectric means.