Burglar-Resistant Window Strip Anchoring Rebate Protection
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Solution Overview
Problem
Existing burglar-resistant doors and windows have vulnerabilities in the rebate area, particularly when the sash frame is tilted, as burglars can easily manipulate locking elements using tools like crowbars or drills, and current solutions do not adequately protect this area.
Innovation Solution
A burglar-resistant door or window design featuring a strip with an elongated cross-section that protrudes into the rebate chamber, preventing tool access and requiring destruction or removal of the strip to manipulate the door or window, combined with anchoring in the window frame leg and use of materials like stainless steel or ceramic for enhanced resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional locking elements are distributed over the circumference of the sash frame, then burglary resistance is increased, but the rebate area remains unprotected and tilted sashes can still be manipulated easily
Solution Approach 1:
The protective bar extends into the rebate area from the sash frame, adding a third-dimensional barrier that protrudes into the space between the sash and window frame. This prevents tools from reaching the locking elements by blocking the path in the rebate area, while the bar's orientation remains effective even when the sash is tilted.
Solution Approach 2:
The protective bar acts as an intermediary element between the sash frame and the window frame, physically blocking access to the rebate area. This intermediate barrier prevents direct contact between manipulation tools and the locking elements, requiring the bar to be destroyed or removed first.
2Reliability
If the strip protrudes deep into the fold chamber to block tool access, then burglary resistance improves, but the strip requires stronger anchoring to withstand attack forces
Solution Approach 1:
The protective bar is pre-anchored to the sash frame at multiple points before any attack occurs. This preliminary anchoring ensures the bar remains firmly in position during attempted break-ins, preventing it from being easily dislodged while maintaining its blocking function in the rebate area.
Solution Approach 2:
The bar features varying cross-sectional designs and anchoring configurations at different locations. The anchoring points are strategically designed with enhanced strength where attack forces are most likely to be applied, while maintaining appropriate blocking depth in the rebate area.
Data Source
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AI summary
In order to further develop a door or window with regard to improved burglar resistance, it is provided according to the invention that at least one strip (15) extending with its longitudinal axis in the direction of the rebate (13), the cross-section of which is oriented perpendicular to the rebate (13) is elongated and is aligned with a longitudinal axis perpendicular to a plane of the at least one infill element (6), wherein the strip (15) is inserted with an anchoring section into a suitable anchoring groove (28) in the associated sash frame leg or frame leg and engages with a free section (29) in a rebate groove (30) in the opposite frame leg or sash leg.