Fan Blade Mounting Structure With Redundant Snap Safety Locks

The single elastic fastener is divided into two separate fasteners (first elastic fastener and second elastic fastener). Each fastener independently secures the blade to the holder, so if one fails due to fatigue or damage, the other continues to provide security. This segmentation transforms a single-point failure system into a redundant system, resolving the contradiction between simple assembly and reliable blade security.

The design incorporates redundant fastening capacity in advance by providing two elastic fasteners instead of one. This prior cushioning against potential fastener failure ensures that even if one fastener degrades or breaks, the blade remains securely attached, preventing the harmful outcome of loose blades while maintaining the simplicity of the overall assembly structure.

The fastening system is segmented into two independent elastic fasteners that operate separately but achieve the same function. This segmentation allows each fastener to remain simple in design and operation, while the combination provides enhanced security. The modular nature of segmented fasteners enables tool-free assembly and disassembly, as each can be independently engaged and disengaged without requiring complex tool-based mechanisms.

The design changes the quantity parameter of fasteners from one to two, thereby improving blade security without significantly increasing operational complexity. The elastic fasteners maintain their simple snap-fit characteristics, allowing users to assemble and disassemble blades easily by hand, while the doubled fastener count provides redundant security against loosening.

The single fastener that undergoes repeated displacement cycles is segmented into two fasteners. Each fastener still needs to be displaced during assembly, but the load and usage cycles are effectively distributed. More importantly, if one fastener becomes damaged from displacement cycles, the other remains functional, maintaining both assembly speed and long-term reliability.

The system incorporates redundant fastening capacity in advance by using two elastic fasteners instead of one. This prior cushioning against fastener failure ensures that even if one fastener becomes damaged or loses effectiveness due to repeated displacement and aging, the blade remains securely attached, preventing the harmful outcome of blade loosening while maintaining quick assembly capability.