RF Shielding Window Shade with Conductive Roller Mechanism
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Solution Overview
Problem
Existing window shielding technologies are inadequate in providing effective radio frequency (RF) and electromagnetic (EM) interference protection, as they are difficult to apply to existing window structures, are not durable, and lack a control mechanism for turning protection on and off, leading to gaps and susceptibility to damage.
Innovation Solution
A radio frequency and electromagnetic interference shielding window shade system featuring a roller tube with a conductive shade material that includes multiple layers of conductive and base materials, along with conductive gaskets in side and sill channels, which can be easily applied to existing windows and provides adjustable RF/EM shielding with minimal leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If glass coatings are applied to provide RF/EM shielding, then shielding effectiveness is improved, but ultraviolet protection is lost and corrosion susceptibility increases
Solution Approach 1:
The patent applies a flexible RF/EM shielding film to the interior surface of the window glass. This thin film approach provides the necessary electromagnetic shielding while preserving the glass's inherent UV protection properties and avoiding corrosion issues associated with metal coatings. The flexible nature of the film allows it to conform to the glass surface without compromising structural integrity.
Solution Approach 2:
The shielding film is constructed as a composite material structure with multiple layers including conductive material layers for RF/EM shielding, adhesive layers for bonding to the glass, and protective layers. This composite structure achieves effective shielding while maintaining durability, UV resistance, and corrosion protection through the synergistic combination of different material properties.
2Object-affected harmful factors
If window structures are protected with shielding coatings, then RF/EM shielding is provided, but the entire window must be replaced if the coating fails
Solution Approach 1:
The shielding system is segmented into a separate, removable film layer that can be independently applied to and removed from the window glass. This segmentation allows the shielding function to be maintained while the glass remains intact, enabling easy replacement of just the shielding film without replacing the entire window assembly if the shielding becomes ineffective.
3Object-affected harmful factors
If RF/EM shielding coatings are applied to glass, then shielding is provided, but the coating is irreversible and cannot be controlled
Solution Approach 1:
The patent implements a controllable shielding system where the RF/EM shielding film can be dynamically applied or removed from the window. This dynamic capability allows the shielding to be activated or deactivated as needed, providing adaptability and control over when electromagnetic protection is required, rather than being a permanent irreversible coating.
4Object-affected harmful factors
If window films are applied to provide RF/EM shielding, then some protection is achieved, but gaps between film edges and window create signal leakage
Solution Approach 1:
The patent combines the RF/EM shielding film with conductive gasket material at the edges to create a continuous shielding barrier. This merging of the film edge with conductive gasketing material effectively seals the edges and eliminates signal leakage paths, achieving comprehensive coverage without requiring extremely precise manufacturing tolerances.
5Object-affected harmful factors
If curtains are used to provide RF/EM shielding, then some protection is provided, but gaps between curtains and windows reduce shielding effectiveness
Solution Approach 1:
The patent uses a flexible shielding film that can be directly applied to conform to the window surface and extend to the edges. This flexible film approach, combined with edge gasketing, provides superior edge sealing compared to rigid curtains, eliminating gaps and achieving comprehensive coverage while maintaining the ability to conform to the window geometry.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively shields windows from RF/EM interference with an attenuation of at least 30 dB at 10 KHz to 100 GHz, offering a durable and replaceable solution with a control mechanism to manage shielding, reducing signal leaks and maintaining window functionality.
Implementation Method 1
A radio frequency and electromagnetic interference shielding window shade containing a roller tube containing a roller shade clutch and an end plug connected through a cylindrical body. The clutch may be configured to rotate the roller tube. The radio frequency and electromagnetic interference shielding window shade may include a shade material extending between a first end attached to the roller tube and a second end extending away from the roller tube, wherein the shade material is configured to rotate about the cylindrical body of the roller tube to roll or unroll the shade. The shade material may contain a shielding layer attached to a side of a base layer and containing a conductive material. In some embodiments, unrolling the shade material from the roller tube covers at least a portion of a window, thereby shielding the window from the radio frequency electromagnetic interference at an RF attenuation of at least 30 dB at a frequency of at least 10 KHz.
Data Source
AI summary
The present disclosure relates to a radio frequency and electromagnetic interference shielding window shade comprising: a roller tube comprising a roller shade clutch and an end plug connected through a cylindrical body, the clutch configured to rotate the roller tube; a shade material extending between a first end attached to the roller tube and a second end extending away from the roller tube, wherein the shade material is configured to rotate about the cylindrical body of the roller tube to roll or unroll the shade, the shade material comprising a shielding layer attached to a side of a base layer and comprising a conductive material, wherein unrolling the shade material from the roller tube covers at least a portion of a window, thereby shielding the window from the radio frequency and electromagnetic interference at an attenuation of at least about 30 dB at a frequency of at least about 10 KHz.