Window Shade Actuating System with Anti-Winding Guard for Cord Safety
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Solution Overview
Problem
Existing window shades with operating cords pose a safety risk due to cord exposure, which can lead to accidental coiling around children's necks, failing to meet safety requirements.
Innovation Solution
An actuating system for window shades that includes a control module with a wand, a flexible operating element, a handle, and an anti-winding guard, where the operating element, handle, and anti-winding guard move in unison, with the anti-winding guard extending outside the wand to prevent cord exposure when the handle is displaced, thereby preventing coiling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an operating cord is used for raising the bottom part of the window shade, then the window shade can be adjusted easily, but the operating cord becomes exposed and poses safety risks
Solution Approach 1:
The patent introduces an intermediary mechanism (the cordless actuating system with wand, control module, and flexible operating element) that mediates between the user and the transmission axle, eliminating the need for exposed operating cords while preserving the ability to easily adjust the window shade
2Productivity
If the operating cord is pulled to raise the bottom part, then the shading structure can be adjusted, but the exposed cord can coil around a child's neck causing injury
Solution Approach 1:
The patent extracts the harmful operating cord from the system and replaces it with a cordless actuating mechanism. The flexible operating element remains contained within the wand and control module, performing the necessary function without exposing any cord that could pose a safety risk
3Device complexity
If a traditional cord-based system is used, then the structure is simple, but it fails to meet safety requirements
Solution Approach 1:
The patent employs a nested structure where the flexible operating element is contained within the hollow interior of the wand, which is itself part of the control module assembly. This nested arrangement maintains structural simplicity while ensuring safety compliance by preventing cord exposure
Data Source
AI summary
An actuating system for a window shade includes a control module actuatable for adjusting a shading structure of the window shade. The control module includes a wand having a hollow interior, a flexible operating element extending outside the wand at a first end thereof, a handle coupled to the operating element and disposed at a second end of the wand, the handle being operable to pull the operating element for actuating the control module, and an anti-winding guard of an elongate shape, the operating element, the handle and the anti-winding guard being movable in unison relative to the wand. The anti-winding guard is configured to extend outside the wand between the handle and the second end of the wand when the handle moves away from the second end of the wand.