Foldable Door Guard Structure for Impact Protection at Hinged Openings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Swingable doors are often damaged by pallet jacks, loading dollies, lift carts, and hospital gurneys due to the protruding edge of the open door causing impact on the door and door frame, leading to alignment issues and functional impairments.
Innovation Solution
A foldable door guard comprising pivotally interconnected planar members with hinges and flanges, secured to the door and frame, deflecting impacts and providing protection without impeding door operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a door guard is installed to protect the door and door frame, then protection from damage is improved, but device complexity increases
Solution Approach 1:
The door guard is divided into multiple planar members (first planar member, second planar member, third planar member, fourth planar member) that are pivotally interconnected. This segmentation allows the guard to fold and unfold while maintaining protection, reducing the need for a single complex rigid structure.
Solution Approach 2:
The door guard incorporates multiple hinges that enable the planar members to pivot relative to each other, creating a dynamic structure that can adapt to door movement. The guard transitions from a folded state during door operation to an unfolded protective state, eliminating the need for complex fixed structures.
2Reliability
If a door guard is designed to provide comprehensive protection, then protection coverage is improved, but ease of operation deteriorates
Solution Approach 1:
The door guard uses hinges to create a dynamic structure that automatically adjusts during door operation. The planar members pivot and fold as the door moves, then automatically unfold to provide full protection when the door is stationary, eliminating manual operation requirements.
Solution Approach 2:
The door guard is designed to self-adjust and self-deploy through the pivotal connection of its planar members. The structure automatically transitions between folded and unfolded states based on door position, providing comprehensive protection without requiring user intervention or complex control mechanisms.
3Strength
If a door guard structure is made robust to withstand impacts, then strength is improved, but device complexity increases
Solution Approach 1:
The robust protection is achieved through multiple planar members connected by hinges rather than a single complex rigid structure. Each planar member can independently absorb and distribute impact forces, providing strength while maintaining structural simplicity.
Solution Approach 2:
The hinge-connected planar members create a dynamic structure that can flex and pivot to absorb impact energies. This dynamic capability provides robust protection against impacts from pallet jacks, loading dollies, and other equipment while avoiding the need for complex reinforcement structures.
Data Source
AI summary
A foldable door guard is provided. The foldable door guard protects doors, such as swingable doors as well as door frames, and door hinges. The foldable door guard includes a plurality of pivotally interconnected planar members which are secured to the swingable door and the door frame. A pair of securing brackets are provided to secure the foldable door guard to a ground surface. The foldable door guard is positioned about the edge of the swingable door, the door frame and the door hinges.