Asymmetric Roller Shutter Rod Wedge Mechanism

The patent applies asymmetry by designing the hook profile and chamber configuration to create a zig-zag arrangement of roller shutter rods instead of a conventional vertical geometry. The hook at the upper end of each rod connects to a chamber positioned asymmetrically, causing the rods to tilt alternately in opposite directions when loaded, thereby achieving both visual homogeneity and enhanced wind protection and security.

The patent applies dynamics by designing the hook and chamber configuration to enable dynamic tilting of the roller shutter rods during operation. The rods are free to tilt alternately in opposite directions when rolled up, allowing smooth operation, but the same configuration causes them to wedge into the guide rail when force is applied from below, providing automatic protection against being pushed up.

The patent merges the security function into the existing hook and chamber configuration of the roller shutter rods. Instead of adding separate locking elements, the asymmetric hook profile and chamber arrangement inherently create the security mechanism through the zig-zag geometry, which causes the rods to wedge into the guide rail when force is applied from below, thereby providing security protection without increasing device complexity.