Pleated Blind Magnetic Locking for Inclined Window Rebates
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Solution Overview
Problem
Magnetic locking mechanisms in pleated blinds cause the rail to tilt into the room when installed in window frames with angled rebates, necessitating complex and error-prone adjustments with fixed-angle wedges, and require stocking multiple wedges for optimal fit.
Innovation Solution
A pleated blind design with pivotably mounted magnetic elements that align with inclined window rebates, using a swivel joint between the rail and receiving element, allowing easy assembly and adjustment without additional parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If magnetic locking mechanisms are used to hold the rail in its upper end position, then the rail stability is improved, but the rail tilts into the room on inclined window rebates
Solution Approach 1:
The receiving element is made pivotally mountable relative to the rail, allowing it to dynamically adjust its orientation. This enables the magnetic locking elements to align with the inclined window rebate while the rail itself maintains its correct horizontal position, resolving the contradiction between stability and orientation.
2Shape
If shims with a fixed angle are provided to compensate for the tilt, then the rail orientation is improved, but the device complexity and installation complexity increase
Solution Approach 1:
Instead of using fixed-angle shims that require precise selection and installation, the receiving element is designed to pivot automatically to the correct angle. This dynamic adjustment eliminates the need for multiple shim types and complex installation procedures, reducing device complexity while maintaining proper rail orientation.
3Length of moving object
If the receiving element is pivotally mounted in a profile chamber of the rail, then the rail width is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The receiving element is nested within the profile chamber of the rail, with the pivot joint integrated into the existing structure. This nesting approach minimizes the additional width required while the self-aligning pivot mechanism reduces the stringency of manufacturing precision requirements through automatic adjustment during installation.
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 design maintains the rail's optimal position on angled rebates, simplifying installation and reducing parts, ensuring the rail remains stable without tilting and complex adjustments.
Implementation Method 1
at least the upper rail (12) can be locked in the uppermost position by means of a magnetic lock on the upper tensioning shoes (14)
Implementation Method 2
the magnetic elements, or in the case where the magnets are arranged in the clamping shoes, the metal counterparts, can align themselves with the clamping shoes mounted on an inclined window rebate
Data Source
Figure 1
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AI summary
A pleated blind (10) has a pleated fabric arranged between two movable rails (12), the rails (12) being guided by guide cables which are attached to tension shoes (14) mountable on a window frame (18) and are guided and deflected by the rails (12), wherein at least the upper rail (12) can be locked in the uppermost position by means of a magnetic locking mechanism on the upper tension shoes (14). In order to enable simple and variable installation on differently inclined window rebates (16), it is provided that the magnetic locking elements belonging to the rail (12) are arranged on a receiving element (26) which is pivotably mounted relative to the rail (12).