Windable Screen Winding Tube Assembly for Gap Reduction
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Solution Overview
Problem
Existing winding devices for windable screens in home-automation installations create a separation between the screen's lateral edge and the support, leading to visual discomfort due to fixed gaps, as the positioning of the winding tube and electromechanical actuator results in inconsistent screen alignment.
Innovation Solution
The proposed winding device minimizes this gap by partially covering the closing off element of the tubular electromechanical actuator with the hollow sleeve and winding tube, adjusting the axial distance between the support and the winding tube's end, allowing for closer screen alignment to the support and reducing the space between the screen's edge and the support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the hollow sleeve is positioned with stops at fixed distances from the tubular electromechanical actuator, then the assembly is simple and reliable, but a separation is created between the support and the winding tube end, resulting in fixed gaps that cause visual discomfort
Solution Approach 1:
The hollow sleeve is designed with an adjustable axial position relative to the tubular electromechanical actuator, allowing the distance between the support and winding tube end to be modified. This dynamic positioning capability enables the gap to be minimized or eliminated, improving visual comfort while maintaining assembly simplicity through the retention of stop-based positioning mechanisms
Solution Approach 2:
The axial distance between the first stop (cooperating with the closing off element) and the second stop (cooperating with the winding tube end) is made variable. By changing this parameter, the position of the winding tube end relative to the support can be adjusted, allowing the separation to be minimized for better visual appearance without complicating the overall assembly structure
2Manufacturing precision
If the hollow sleeve covers the closing off element completely, then the screen can be positioned closer to the support, but the axial distance between the first and second stops must be precisely controlled
Solution Approach 1:
The hollow sleeve acts as an intermediary component between the tubular electromechanical actuator and the winding tube. By positioning the hollow sleeve at a specific adjustable distance from the closing off element, it mediates the relationship between these components, allowing precise control of the winding tube end position relative to the support while maintaining ease of assembly through the stop-based positioning system
Data Source
AI summary
A winding device for a windable screen of a closure or sun-protection home-automation installation, includes: a winding tube movable around a rotation axis; a hollow sleeve positioned at one of the two ends and inside the winding tube; a tubular electromechanical actuator inserted inside the hollow sleeve; and two supports, each support being positioned across from one of two ends of the winding tube. The tubular electromechanical actuator includes: a case, and a closing off element positioned at one end of the case. The closing off element has a front face positioned in a plane parallel to a wall of one of the two supports, and includes first fastening elements cooperating with second fastening elements of the support. The hollow sleeve includes a first stop cooperating with a stop of the closing off element, and a second stop cooperating with the end of the winding where the sleeve is inserted.