Speaker Frame Block Construction Reduces Harmonic Distortion
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Solution Overview
Problem
Conventional speakers fail to adequately eliminate harmonic distortion due to asymmetrical ring-shaped edges with differing diameters, which affects the symmetry of diaphragm vibration and sound quality.
Innovation Solution
A speaker design featuring a frame with a block construction, comprising a first and second frame part, where the outer circumferential edge of the suspension holder is sandwiched between these parts, ensuring symmetrical edges and reducing harmonic distortion by equalizing the diameters of the ring-shaped edges, thereby improving amplitude symmetry and inhibiting diaphragm rolling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the outer circumferential edge of the diaphragm is coupled to the frame via a ring-shaped edge with smaller diameter, then the diaphragm can be supported, but harmonic distortion cannot be eliminated sufficiently
Solution Approach 1:
The patent applies asymmetry by making the first ring-shaped edge (coupling the diaphragm) and the second ring-shaped edge (coupling the suspension holder) have equal diameters, creating a symmetrical structure. This symmetry in the asymmetrical design (both edges being ring-shaped but with equal diameters) allows the diaphragm to vibrate symmetrically, thereby eliminating harmonic distortion effectively while maintaining ease of manufacture
2Ease of manufacture
If the first and second ring-shaped edges have different diameters, then the structure is simpler to manufacture, but amplitude symmetry and sound quality deteriorate
Solution Approach 1:
The patent applies parameter changes by specifically setting the diameter of the first ring-shaped edge equal to the diameter of the second ring-shaped edge. This parameter equality creates symmetrical vibration characteristics of the diaphragm, improving amplitude symmetry and sound quality while remaining manufacturable through standard framing techniques
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
This design effectively reduces harmonic distortion and improves sound quality by ensuring symmetrical vibration of the diaphragm, making it particularly suitable for high-power speakers.
Implementation Method 1
a voice coil disposed movably with respect to the magnetic gap (8) in the magnetic circuit (1)
Data Source
Figure 1~2
Figure 3~4
AI summary
The frame of a speaker is divided into a first frame part and second frame part. The outer circumferential edge of the suspension holder is sandwiched between the surfaces of the first and second frame parts. This structure can reduce rolling of the diaphragm and harmonic distortion of the speaker.