Loudspeaker Diaphragm Patterns Disperse Stress
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Solution Overview
Problem
The design of loudspeaker diaphragms often results in stress concentration and warping deformation due to reduced width of the fixed portion, which affects the yield and compliance performance.
Innovation Solution
Incorporating patterns across the suspension ring and fixed portions of the diaphragm, with second ends of the patterns protruding onto the suspension ring portion, helps disperse stress and increase the strength of the fixed portion, preventing warping deformation and improving yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the width of the fixed portion is reduced to increase the width of the suspension ring portion, then the compliance performance of the diaphragm is improved, but stress concentration occurs on the fixed portion and warping deformation easily occurs
Solution Approach 1:
The patent introduces multiple patterns (such as V-shaped patterns, strip patterns, or zigzag patterns) on the fixed portion of the diaphragm. These patterns segment the continuous fixed portion into multiple zones, which helps distribute and disperse the stress that would otherwise concentrate on the reduced-width fixed portion. The patterns create multiple stress distribution paths, preventing stress concentration while maintaining the reduced width for improved compliance performance.
Solution Approach 2:
The patent applies patterns with specific local characteristics (such as V-shaped patterns with specific opening angles, strip patterns with specific widths, or zigzag patterns with specific amplitudes) to the fixed portion. These local pattern designs are optimized to provide enhanced stress distribution and structural reinforcement exactly where needed on the fixed portion, allowing the overall fixed portion width to be reduced while maintaining local strength through the patterned structure.
2Adaptability or versatility
If the width of the fixed portion is reduced to increase the width of the suspension ring portion, then the compliance performance of the diaphragm is improved, but warping deformation of the fixed portion occurs
Solution Approach 1:
The patterns segment the fixed portion into multiple zones that can independently manage stress and deformation. By dividing the fixed portion through patterns, each segment can better accommodate dimensional changes during molding and operation, reducing the likelihood of overall warping deformation while maintaining the reduced width necessary for compliance performance.
Solution Approach 2:
The localized pattern structures provide targeted reinforcement and stress distribution at critical areas of the fixed portion. This local quality enhancement prevents warping deformation by creating multiple stable zones within the fixed portion, allowing the overall structure to maintain stability even with reduced width for improved compliance.
3Strength
If patterns are provided on the diaphragm to disperse stress, then the strength of the fixed portion is increased, but the device complexity increases
Solution Approach 1:
The patterns segment the fixed portion into multiple zones, which disperses stress and increases strength. While this does increase structural complexity, the segmentation is achieved through simple geometric patterns (V-shaped, strip, or zigzag) that can be easily manufactured and integrated into the diaphragm structure, balancing the strength benefit with acceptable complexity increase.
Solution Approach 2:
The patterns provide localized strength enhancement only where needed on the fixed portion, rather than requiring overall structural reinforcement. This local quality approach increases strength at critical stress points while minimizing the overall complexity increase, as the patterns are confined to specific regions and use simple geometric forms.
Data Source
AI summary
An embodiment of the present invention provides a loudspeaker diaphragm and a loudspeaker. The loudspeaker diaphragm comprises: a center portion, a suspension ring portion, and a fixed portion successively connected from the inside to the outside; the diaphragm is provided thereon with a plurality of patterns that span across the suspension ring portion and the fixed portion; first ends of the patterns extend towards the peripheral edge of the fixed portion, while second ends thereof stretch towards the peripheral edge of the suspension ring portion so as to extend onto the suspension ring portion. The technical solution of the present invention can not only effectively disperse stress of a stress concentration region of the fixed portion, but also can increase the strength of the fixed portion, thus effectively avoiding the problem of warping deformation of the diaphragm after the diaphragm is molded, thereby improving the yield of the diaphragm.