The cosmetic case features a dual-layer frame design, with independent frames for the lid and the main body, reinforced by L-shaped connecting beams to enhance overall structural integrity. An internal shock-absorption system-comprising multiple spring-steel springs-works in conjunction with horizontal plates and storage frames to provide cushioning. Inside the case, semi-arched clamping blocks secure the cosmetics; these are connected via springs to form an adjustable retention mechanism.
The interface between the lid and the body utilizes a mechanical interlocking design-featuring mating grooves and protrusions-to ensure a secure, sealed fit. The nested configuration of the inner and outer panels is assembled via a linear slot-and-tab method, effectively enhancing the structural stability of the case.
