Composite Profiled Section Shear-Resistant Reinforcement
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Solution Overview
Problem
Plastic window profiles face challenges in achieving both high static stability and effective thermal insulation due to the low modulus of elasticity of plastic materials, which is not adequately addressed by conventional metal reinforcement methods that compromise thermal insulation.
Innovation Solution
The design incorporates reinforcing elements with high modulus of elasticity, such as metals or wood, integrated into the plastic profile using form-fitting connections like undercuts and embossing, and the use of composite profiles with additional foam layers to enhance both bending rigidity and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal reinforcement profile is inserted into plastic profile hollow chamber, then bending stiffness is improved, but thermal insulation deteriorates
Solution Approach 1:
The invention extracts the metal reinforcement from the hollow chamber and places it in the profiled section instead, eliminating the thermal bridge through the chamber while maintaining structural reinforcement. The metal strip is positioned within the plastic profile wall structure rather than spanning a hollow space.
Solution Approach 2:
The reinforcement approach transitions from a two-dimensional hollow chamber insertion to a three-dimensional integration within the profiled section. The metal strip follows the profiled geometry, creating a complex spatial arrangement that maintains thermal insulation while providing multi-directional reinforcement.
2Stability of the object's composition
If conventional U-iron reinforcement is used, then static stability is improved, but thermal insulation performance deteriorates
Solution Approach 1:
The invention creates a composite structure where metal and plastic materials are integrated at the profiled section level. The profiled section itself acts as a composite element combining thermal insulation material with reinforcement features, achieving both static stability and thermal insulation performance.
3Object-affected harmful factors
If reinforcing bands are arranged parallel to glass plane, then thermal insulation is maintained, but bending stiffness is insufficient
Solution Approach 1:
The profiled section introduces three-dimensional geometric features that provide reinforcement in multiple directions simultaneously. The profiling creates structural strength not just parallel to the glass plane but also perpendicular to it, through the complex spatial arrangement of the profiled geometry.
Solution Approach 2:
The profiled section employs curved and contoured surfaces rather than flat planes. This curvature and profiling create inherent structural strength through geometric form, providing bending stiffness in multiple directions while maintaining thermal insulation performance.
Data Source
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AI summary
The invention relates to, inter alia, a composite profiled section, in particular for windows and doors, comprising an extruded plastic profiled section (10, 20) and at least one reinforcement element (1, 2, 4, 5) that is connected thereto in a largely shear-resistant manner. Said composite profiled section is characterized by at least one holding element (3) on the reinforcement element (1, 2, 4, 5) to form/establish an integral bond, frictional engagement, and/or a positive connection between the reinforcement element (1, 2, 4, 5) and the plastic profiled section (10, 20), said holding element (3) acting in both the transverse and the longitudinal direction of the reinforcement element (1, 2, 4, 5) on the plane of the reinforcement element (1, 2, 3, 4).