Two-Part Security Door Frame That Preserves the Original Opening
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Solution Overview
Problem
Existing gate replacement methods require masonry work, damage existing partitions, and reduce the gate opening, necessitating permits and increasing labor and time costs.
Innovation Solution
A frame composed of two complementary high-strength steel parts - an interior and exterior frame - is mounted on the existing gate frame without modification, ensuring the new gate maintains the original opening and adapts to varying partition thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the existing frame is replaced with a safety frame through masonry work, then the gate security is improved, but the installation time and labor costs increase
Solution Approach 1:
The frame is divided into two independent parts: an interior frame that attaches to the existing frame and an exterior frame that forms the visible safety gate frame. This segmentation allows the new frame to be installed without removing or modifying the existing frame, eliminating masonry work and significantly reducing installation time while maintaining gate security
Solution Approach 2:
The interior frame acts as an intermediary component that connects the existing frame to the exterior frame. It provides mounting surfaces and attachment points that enable the safety frame to be installed without direct modification to the existing structure, thus avoiding time-consuming masonry operations
2Reliability
If the existing frame is replaced with a safety frame, then the gate security is improved, but the labor costs increase
Solution Approach 1:
By segmenting the frame into interior and exterior components that can be installed independently, the complexity of the installation process is reduced. Workers can attach the interior frame to the existing structure using simple fasteners rather than performing skilled masonry work, thereby reducing labor costs while ensuring gate security
3Reliability
If the existing frame is removed and replaced, then the gate security is improved, but the partition may be damaged or broken
Solution Approach 1:
The interior frame is designed to distribute attachment forces across multiple points on the existing frame and partition, preventing concentrated loads that could cause damage. The design anticipates and counteracts potential damage by using a mounting system that protects rather than harms the existing partition structure
Solution Approach 2:
The interior frame serves as a protective intermediary between the installation process and the existing partition. It provides a robust mounting structure that secures the safety gate without requiring removal of the existing frame or direct fastening to the partition, thereby preventing damage
4Adaptability or versatility
If a frame structure embraces the wall to adapt to partition thickness, then the adaptability is improved, but the gate opening is reduced
Solution Approach 1:
The frame is segmented into interior and exterior components with an adjustable separation mechanism. This allows the distance between the frames to be varied according to partition thickness without requiring the frames to embrace the wall, thereby maintaining the full gate opening while adapting to different partition dimensions
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention consists of a pair of parts that allow the frame of an existing gate, which is going to be replaced by a safety gate, to be used, thus avoiding having to carry out masonry and painting work, all without modifying the gate opening. To do this, the device is made up of an interior frame (5) that is adapted and screwed to the existing frame (2) itself, and an exterior frame (6) that fits into the interior frame (5) and is screwed thereto using screws (8').