Speaker Driver Suspension Assembly for Cone Alignment Stability
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Solution Overview
Problem
Conventional speaker drivers have separate attachment planes for the spider and surround, leading to potential misalignment and inefficiencies in the excursion movement of the cone, particularly affecting high-frequency performance.
Innovation Solution
The spider and surround are integrated on the same attachment plane or separated by a thin spacer, with their outer diameters either identical or within a small percentage of each other, allowing for improved alignment and stability through direct bonding or an intermediate layer, enhancing the excursion movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the spider and surround are attached to different attachment planes, then the structure is simpler to manufacture, but the alignment and stability of the cone is compromised
Solution Approach 1:
The patent merges the attachment planes of the spider and surround by integrating them into a single unified attachment structure on the basket. This combining of previously separate attachment locations eliminates misalignment issues while maintaining manufacturing feasibility through integrated construction methods.
Solution Approach 2:
The patent introduces an intermediate integration layer or unified attachment structure that mediates between the spider and surround components. This intermediary structure provides a common reference plane for both components, ensuring precise alignment while allowing for straightforward manufacturing processes.
2Productivity
If the spider and surround are attached to different attachment planes, then the assembly process is simpler, but the excursion movement efficiency is reduced
Solution Approach 1:
By merging the attachment planes into a single integrated structure, the patent ensures that the spider and surround work together efficiently in unison during cone excursions. This unified attachment provides better mechanical coupling, improving excursion efficiency while maintaining assembly productivity through streamlined integration.
3Ease of manufacture
If the outer diameters of spider rim and surround rim are different, then the components can be manufactured independently, but the alignment and stability are compromised
Solution Approach 1:
The patent optimizes the dimensional parameters of the spider and surround rims, specifically adjusting their outer diameters to be substantially equal. This parameter optimization ensures that when the rims are integrated on the same attachment plane, they align perfectly, providing maximum stability while allowing independent manufacturing of the components.
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 integration improves the alignment and stability of the cone, resulting in enhanced performance across various frequency ranges, including improved high-frequency response and reduced mechanical stress.
Implementation Method 1
electrical impulses are produced that alternate from positive to negative voltages and create an electromagnet when they reach a voice coil (a spool of wire) inside the speaker
Implementation Method 2
The surround and spider center the cone/moving mass assembly and restore it to its original position
Data Source
AI summary
A speaker driver assembly includes a voice coil coupled to a magnet motor structure, a cone coupled to the voice coil, the cone and the voice coil being mounted in a basket, a surround and a spider coupled to the basket. Rims of the surround and of the spider are mounted on an annular shelf formed on the basket.