Elastic-Band Card Holder Wallet for Simple Assembly and Stable Storage

The patent extracts the hinge structure from the wallet design and replaces it with elastic bands that directly connect the two panels. This removes the complex mechanical hinge while preserving the opening and closing functionality through the elastic tension of the bands.

The patent replaces the mechanical hinge system with an elastic band system. Instead of using joints, pins, and rotating connections, the design uses elastic tension to hold the panels together, simplifying the mechanical structure while maintaining the wallet's functional integrity.

By removing the hinge structure entirely and using elastic bands instead, the patent simplifies the assembly process. The elastic bands can be easily attached to the panels without requiring precise alignment or complex joining operations, thereby improving production efficiency while maintaining card storage stability.

The patent changes the structural parameter from rigid hinge connections to flexible elastic band connections. This parameter change allows for more tolerant assembly requirements and simpler manufacturing processes, improving productivity while the elastic properties ensure reliable card storage.

The elastic bands are designed to automatically provide the necessary clamping force to hold cards in place. The self-service mechanism uses the inherent elastic tension to maintain card storage stability without requiring additional complex fastening or adjustment mechanisms, thus maintaining ease of manufacture.

The patent carefully selects and adjusts the elastic parameters of the bands to ensure they provide sufficient clamping force for reliable card storage. By optimizing the elastic modulus, band thickness, and attachment points, the design achieves both manufacturing simplicity and storage reliability through parameter optimization rather than structural complexity.