Compression Framing System for Historic Building Security
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Solution Overview
Problem
Existing security measures for historic buildings with stone cladding often damage the external surfaces when attempting to install security windows, as current methods require penetration or heavy adhesives, compromising the building's integrity.
Innovation Solution
A compression framing system that engages with opposing mounting surfaces without penetrating, using expandable frames with adjustable force and pivot feet to secure protective structures like security glass windows, allowing for installation without damaging the surrounding surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional security measures (drilling, heavy adhesives) are used to install security windows on historic buildings, then security protection is improved, but the external cladding surface is damaged
Solution Approach 1:
The mounting system is divided into separate components: a surface-mounted frame structure and a security window assembly. The frame attaches to the building surface without penetration, while the security window is held within the frame, separating the mounting function from the security function.
Solution Approach 2:
A surface-mounted compression frame acts as an intermediary between the building's external cladding and the security window. This frame provides the security function while the cladding remains intact, mediating between the need for security and the need to preserve the building surface.
2Object-affected harmful factors
If non-penetrating mounting methods are used to preserve the building surface, then the external cladding is preserved, but security protection effectiveness is reduced
Solution Approach 1:
The compression frame is installed on the building surface beforehand, creating a secure mounting structure before the security window is added. This preliminary action establishes strong attachment points without damaging the cladding, enabling effective security protection to be achieved subsequently.
Solution Approach 2:
The compression frame uses expandable arms that can be adjusted to apply optimal mounting pressure against the building surface. This dynamic adjustment allows the frame to achieve secure attachment and effective security protection while adapting to variations in the building surface.
3Strength
If expansion force is increased to improve mounting security, then attachment strength is improved, but risk of damaging the mounting surface increases
Solution Approach 1:
The expansion force parameter can be selectively adjusted and tuned based on the strength characteristics of the specific mounting surface. This allows optimization of the attachment strength to match the load requirements while staying below the damage threshold of the building surface material.
Solution Approach 2:
The system allows for adjustment of expansion force based on feedback about the mounting surface conditions and load requirements. This enables real-time optimization of the mounting pressure to achieve secure attachment without exceeding the damage threshold of the surface.
Data Source
AI summary
A compression framing system configured to engage with opposing mounting surfaces, the compression framing system having a compression frame, the compression frame comprising: a first compression arm and second compression arms, each compression arm having: a body member; a pivot foot engaged with the body member, said pivot foot being configured to engage directly with a corresponding mounting surface; and a shock bracket engaged with the body member and configured to engage with a protective structure; an inner support beam configured to secure the first compression arm to the second compression arm; and an expansion controller associated with the body member of the first compression arm; wherein the expansion controller is configured to selectively adjust a separation distance between the pivot feet of the compression arms. The compression framing system is configured to provide a mounting structure frictionally engaged with opposing mounting surfaces for non-destructive attachment of the protective structure.