Shutter Bead Reinsertion Using Side Rollers
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Solution Overview
Problem
Existing flexible shutter devices for closing windows face issues with friction when reintroducing side beads into slideways, leading to mechanical stress and reduced service life.
Innovation Solution
The use of a pair of rollers arranged on either side of the shutter to roll onto the extracted bead and guide it back into the slide, reducing friction and mechanical stress during reinsertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If guide blocks are used to guide the bead back into the slide, then the bead can be automatically reintroduced, but friction force stresses the shutter and hinders its upward movement
Solution Approach 1:
The patent replaces the friction-based mechanical interaction between guide blocks and bead with a roller-based system. The rollers rotate as the bead passes over them, converting sliding friction into rolling friction, which significantly reduces the harmful friction force while maintaining the automatic reintroduction function.
Solution Approach 2:
The rollers act as intermediary elements between the bead and the guide structure. Instead of the bead directly contacting and frictioning against the guide blocks, the rollers mediate this interaction by rolling over the bead, reducing friction and enabling smoother bead reintroduction.
2Extent of automation
If an opening is made in the slideway for bead reintroduction, then the bead can return to the slide, but the width must be sufficient to allow passage which affects structural integrity
Solution Approach 1:
The reintroduction function is segmented from the main slide structure. Instead of requiring a large opening in the slide itself, the rollers are positioned adjacent to the slide with a gap that allows bead passage. This separates the structural function (slide) from the reintroduction function (roller gap), maintaining slide integrity while enabling bead return.
Solution Approach 2:
The rollers serve as intermediary elements that facilitate bead reintroduction without requiring significant modifications to the slide structure. The gap between rollers acts as the passage way, eliminating the need for large openings in the slide while maintaining its structural strength.
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
This solution significantly reduces mechanical stresses on the shutter and beads, thereby increasing the service life and operational efficiency of the shutter device.
Implementation Method 1
the guide member comprises at least one pair of rollers which are arranged respectively on either side of the shutter so that, while the shutter is moved in the opposite direction aforesaid, they roll on the bead which has been extracted from the slide, pushing it into the slide
Data Source
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Figure 3
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AI summary
Device with a shutter and element for the reinsertion of a shutter into a guide slide. Device with a shutter for the closing-off of a bay (1), comprising a slide (7, 8); a deformable shutter (3) comprising a lateral flange (10, 11, 27) which is mounted slidingly in the slide; and a means for reinserting the flange into the slide, after it has been pulled out of the slide, this means comprising at least one pair of rollers (17) which are placed on either side of the shutter and which, while the shutter is moved opposite the bay in order to uncover the latter, roll on the flange which has come out of the slide and push it back into the latter. Figure 6.