Rear Side Window Fastening Film for Guide Web Retention

The patent introduces a fastening film as an intermediary element between the guide web and the rear side window. This film remains attached to the guide web even after the window is destroyed, serving as a mediator that maintains the structural connection. The fastening film is specifically designed to stay on the guide web while the window breaks away, thus resolving the contradiction between frameless design and structural integrity.

The patent applies beforehand cushioning by designing the fastening film to anticipate potential window destruction. The film is pre-positioned and sized to ensure that if the window breaks, glass residues will be caught and held by the film, preventing them from entering the vehicle interior through the through-opening. This preparatory measure ensures safety without compromising the frameless design.

The patent employs a thin film structure to achieve the safety function without adding significant complexity. The fastening film is a flexible, thin component that can be integrated into the existing door structure. It catches glass residues through its material properties and geometric design rather than through complex mechanical mechanisms, thus improving safety while minimizing added complexity.

The fastening film is designed as a simple, relatively inexpensive component that performs its safety function and can be replaced if needed. Rather than using expensive, complex safety mechanisms, the patent employs a straightforward film structure that provides adequate protection against glass residues, aligning with the principle of using simpler, more economical solutions when sufficient.