Speaker Sound-Absorbing Shell Preserves Vocal Cavity Space

The patent replaces the traditional thick cavity wall design with a thin-walled holding shell structure that is injection molded as an integrated unit. The holding shell has a thickness of 0.5-1.5mm (compared to traditional 2-3mm), providing sufficient structural strength while maximizing the internal vocal cavity space. The thin-walled design incorporates reinforcement ribs and integrated fixing structures that maintain structural integrity without requiring excessive wall thickness.

The patent merges the holding shell, sound absorption particle container, and fixing structure into a single integrated injection molded component. The holding shell includes integrated fixing lugs that are molded directly onto the shell body, eliminating the need for separate attachment parts. This integration allows the use of thinner walls while maintaining structural strength through optimized geometry and distributed reinforcement features built into the single-piece structure.

The patent extracts the net cloth component from the injection molding process entirely. Instead of molding net cloth directly onto a small cavity (which has low yield), the design uses a holding shell with open ends that contains sound absorption particles. The net cloth is eliminated as a separate molded component, and sound absorption is achieved through the particles contained within the holding shell structure, which has much higher injection molding yield and lower production costs.

The patent replaces the expensive, low-yield net cloth injection molding process with a simpler, more robust holding shell structure that uses inexpensive sound absorption particles. The holding shell itself is a durable, reusable component with high molding yield, while the sound absorption function is provided by replaceable particles that can be easily filled and sealed, resulting in overall lower production costs and higher productivity.