Adjustable Resonance Chamber in Speaker Device

The patent applies the dynamics principle by making the resonance box volume adjustable rather than fixed. The expandable structure allows the resonance box to change its internal volume dynamically based on operational needs, enabling loud sound output when required while maintaining a compact form when not in use. This resolves the contradiction by allowing the system to have both large volume (when expanded) and small volume (when collapsed) as needed.

The patent applies segmentation by dividing the resonance box into multiple expandable sections that can be independently adjusted. The structure includes movable walls or panels that can be positioned at different locations to create various internal volume configurations. This segmented approach allows for flexible sound quality adjustment while keeping each individual segment relatively simple in design, thereby managing overall device complexity.

The patent applies self-service through self-adjusting or self-aligning mechanisms in the expandable structure. The movable walls or panels are designed to automatically position themselves or self-align during assembly, compensating for manufacturing tolerances without requiring precise pre-positioning or complex adjustment procedures. This allows for easy manufacturing while maintaining consistent sound quality across different assemblies.