Snap-lock Muntin Assembly with Deformable Clip
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Solution Overview
Problem
Muntin bars in window grilles are not securely attached, leading to poor appearance and dimensional issues, potentially causing the grille to disengage from the window, which is undesirable.
Innovation Solution
A muntin assembly with a first and second muntin bar, each defining a pocket and a cleat, where a clip is disposed in the pockets to hook the bars together in an overlapping arrangement, allowing the clip to momentarily deform and securely engage the cleats, providing a robust and concealed connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If muntin bars are independently attached without a secure connection mechanism, then the device complexity is reduced, but the reliability of attachment deteriorates
Solution Approach 1:
A clip is introduced as an intermediary component between the first and second muntin bars. The clip features hooks that engage with pockets in each bar and a body that receives cleats from both bars, creating a secure three-point connection. This intermediary element resolves the contradiction by providing reliable attachment without requiring complex direct joining mechanisms between the bars themselves.
2Manufacturing precision
If muntin bars are securely attached with precise alignment, then the manufacturing precision is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The clip incorporates elastic deformation capability in its body, allowing it to flex during assembly to accommodate the insertion of cleats from both muntin bars. This dynamic property enables the clip to momentarily deform to accept the cleats and then maintain a secure connection, resolving the contradiction by providing precise alignment through elastic recovery while maintaining ease of manufacture through simple insertion movements.
3Ease of operation
If the clip deforms to accept cleats, then the ease of operation is improved, but the strength of the connection may deteriorate
Solution Approach 1:
The clip's material properties and geometric parameters are designed to allow controlled elastic deformation during assembly. The body of the clip is engineered with specific flexibility characteristics that enable it to deform to accept the cleats and then recover to maintain a strong, secure connection. This parameter optimization resolves the contradiction by ensuring the deformation is sufficient for easy assembly but controlled enough to maintain connection 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
The solution ensures secure attachment of muntin bars, maintaining the structural integrity and appearance of the window grille, with the clip's deformation providing an audible and tactile confirmation of proper assembly, minimizing axial movement and enhancing the visual appeal.
Implementation Method 1
the clip momentarily deforms to accept receipt of the first cleat and the second cleat
Data Source
AI summary
A muntin assembly for an associated window glass. The muntin assembly includes a first muntin bar that defines a first pocket and includes a first cleat. The muntin assembly also includes a second muntin bar that defines a second pocket and includes a second cleat. The muntin assembly also includes a clip disposed in the first pocket and the second pocket so as to hook the first muntin bar and the second muntin bar together in an overlapping arrangement. Further, the clip momentarily deforms to accept receipt of the first cleat and the second cleat.