Solar Light String Housing With Self-Retracting Cord and Alert Sensor

The flexible electronic cord utilizes its own elasticity to automatically retract into the housing after extension. The cord's inherent elastic properties enable it to return to its original state without requiring external mechanical assistance, thereby eliminating the need for motors, springs, or other complex retraction mechanisms.

The patent removes the entire mechanical retraction system (motors, windings, springs) from the device. By extracting these unnecessary mechanical components and relying solely on the elastic property of the flexible cord itself, the design achieves automated operation while dramatically reducing device complexity and manufacturing cost.

The housing is designed with a fixed outer housing and a movable inner accommodating structure that can slide relative to the outer housing. This segmentation allows the inner structure to move for cord extension while the outer housing remains stationary, eliminating repeated opening and closing of housing sections and preserving seal integrity.

A guide structure or sliding mechanism acts as an intermediary between the flexible cord and the housing. This intermediary allows the cord to extend and retract through the housing without requiring the housing sections to open and close, thereby protecting the sealing elements from repeated mechanical stress and maintaining environmental resistance over extended periods.