Plastic Window Profile with Tapered Clamping Bracket
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Solution Overview
Problem
Conventional plastic window construction profiles with wide clamping brackets hinder the manufacturing of minimalistic window assemblies, especially those intended for sunken configurations, as they compromise strength and stability.
Innovation Solution
A plastic construction profile with a hollow, progressively widening fixed clamping bracket and a removable clamping bracket, where the fixed clamping bracket's side walls widen towards the main body, allowing for a narrower cross-section while maintaining sufficient pressure and stability, and featuring an inwardly slanting second section to enhance load deflection characteristics without additional reinforcement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the fixed clamping bracket is made wide in cross-section to ensure sufficient strength and pressure on the pane, then the structural stability and waterproof connection are improved, but the profile becomes bulky and cannot achieve minimalistic window assemblies or sunken configurations
Solution Approach 1:
The clamping bracket transitions from a uniformly wide cross-section to a tapered form where the width varies along the longitudinal axis. The base portion has a smaller cross-section (10-15mm) while the upper portion maintains adequate width for clamping, effectively distributing the structural function across different dimensions and locations of the bracket.
Solution Approach 2:
Different portions of the clamping bracket are given different cross-sectional widths according to their specific functional requirements. The base portion requires minimal width for attachment stability, while the upper clamping portion requires sufficient width for applying pressure on the pane. This local differentiation optimizes both strength and minimalistic profile.
2Shape
If the fixed clamping bracket is made narrow in cross-section to achieve minimalistic window assemblies, then the profile sleekness and sunken configuration capability are improved, but the pressure on the pane and structural stability are compromised
Solution Approach 1:
Instead of reducing width uniformly, the design introduces longitudinal dimension variation through tapering. The narrow base (10-15mm) achieves the minimalistic profile, while the upper portion expands to provide adequate clamping surface area and pressure distribution, maintaining strength despite the overall reduced profile.
Solution Approach 2:
The cross-sectional width parameter is changed along the length of the clamping bracket, creating a gradient from narrow at the base to wider at the clamping end. This parameter variation allows the bracket to satisfy both aesthetic minimalism and functional strength requirements simultaneously.
3Strength
If additional reinforcement profiles are added to enhance load resistance, then the structural stability is improved, but the device complexity and manufacturing steps increase
Solution Approach 1:
The reinforcement function is merged with the clamping bracket itself through the tapered geometry. The varying cross-section inherently provides both clamping capability and structural reinforcement, eliminating the need for separate reinforcement profiles and reducing overall device complexity.
Solution Approach 2:
The tapered clamping bracket serves multiple functions simultaneously: it provides the clamping surface for the pane, delivers sufficient pressure through its upper width, ensures stable attachment through its base portion, and provides structural reinforcement all in one component, replacing what would traditionally require multiple separate elements.
Data Source
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AI summary
The present invention is directed to a construction profile for a window or door frame, the profile manufactured in a plastics material and comprising: - a main body extending in a longitudinal direction X; - one fixed and one removable clamping bracket, both clamping brackets protruding from said main body in direction Y perpendicular to the longitudinal direction X, and extending parallel to one another and at a distance of one another in the longitudinal direction X; - a pane receiving zone defined by, on the one hand, said clamping brackets and, on the other hand, a surface of said main body, the receiving zone configured to receive a side edge of a pane (the pane extending in the X-Y plane) to be clamped between said clamping brackets, - the fixed clamping bracket comprising a hollow body having at least two side walls, one facing the pane receiving zone and one facing away the pane receiving zone and defining an upper free end portion (configured to abut a pane received in the pane receiving zone) and a base portion joining the upper free end portion to the main body, characterized in that the distance between said side walls of the fixed clamping bracket progressively widens at its base portion from the upper portion towards the main body. Further, the present invention is also directed to a window or door comprising a frame with at least one construction profile as defined above, the window or door having a Resistance Class RC 2 N according to the DIN V ENV 1627/2011 standard.