Loudspeaker Frame Tapered Spokes Weight Reduction
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Solution Overview
Problem
Traditional loudspeaker frames face a challenge in minimizing weight while maintaining structural integrity, as radially-oriented spokes can be heavy and inefficient in weight reduction.
Innovation Solution
A frame configuration with tapered spokes that taper from the base to the mounting flange, forming a radial triangular pattern with converging legs and cut-out regions, providing support and reducing weight without compromising structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional radially-oriented spokes are used in the frame, then structural integrity is maintained, but weight is excessive
Solution Approach 1:
The spoke cross-sectional area is varied along its length by implementing a tapered design, where the spoke is thicker at the base and progressively thinner toward the mounting flange. This parameter change optimizes the strength-to-weight ratio by concentrating material where structural support is most needed while reducing weight in less critical areas.
Solution Approach 2:
The frame structure transitions from uniform thickness to variable thickness, with each spoke having different cross-sectional dimensions at different locations. The thicker regions provide structural support where forces are greatest, while thinner regions reduce overall weight, creating a non-uniform quality distribution that optimizes both strength and weight.
2Weight of moving object
If spoke thickness is reduced to minimize weight, then frame weight decreases, but structural support capability deteriorates
Solution Approach 1:
The tapered spoke design implements a gradual parameter change in cross-sectional area along the spoke length. This controlled reduction in thickness maintains adequate support capability in thicker regions while achieving weight reduction in thinner regions, optimizing the reliability-to-weight ratio.
Solution Approach 2:
The design moves from a two-dimensional uniform cross-section to a three-dimensional tapered form, utilizing the additional dimensional space to vary the spoke thickness progressively. This dimensional approach allows the structure to maintain strength where needed while reducing weight overall.
Data Source
AI summary
A speaker frame, and corresponding speaker, may have tapered spokes that form a radial triangular pattern with an apex converging near the frame's mounting flange, for example, near tabs including mounting holes where the frame attaches to a speaker baffle. The tapered spokes may include a triangular cut-out region defining a pair of converging legs that converge at the mounting flange. The width, curvature, and the angle of the spokes may allow for a thin and lightweight configuration with uniformly distributed minimal stress.