Door Hinge with Complementary Mechanical Components for Single-Person Installation
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Solution Overview
Problem
Existing door hinge systems require two people to install due to tight vertical and angular positioning tolerances, making it difficult for a single individual to align and connect the hinge parts, leading to the common practice of purchasing expensive pre-hung door assemblies.
Innovation Solution
A hinge structure comprising two parts with complementary mechanical components such as slots, hooks, and edge tabs that allow for easy alignment and interconnection by a single person, featuring a knuckle or flexible strip hinging component and support mechanisms like slots, hooks, and tabs for secure attachment to the door and door frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional door hinge structures are used, then secure attachment and support are achieved, but installation requires two people due to tight positioning tolerances
Solution Approach 1:
The hinge is divided into two separate parts: a first part attached to the door and a second part attached to the door frame. This segmentation allows each part to be independently positioned and aligned, reducing the complexity of simultaneous alignment required in traditional single-piece hinges.
Solution Approach 2:
A complementary mechanical component acts as an intermediary between the two hinge parts. This component features guide structures that automatically align the parts during installation, eliminating the need for precise manual positioning and reducing installation difficulty.
2Manufacturing precision
If pre-hung door assemblies are purchased, then proper alignment is guaranteed, but cost increases significantly
Solution Approach 1:
The hinge parts are pre-configured with complementary mechanical components that have built-in alignment features. These features perform the alignment function automatically during installation, eliminating the need for factory pre-assembly on expensive jigs while ensuring proper alignment.
Solution Approach 2:
The complementary mechanical components are designed to self-align during installation through their geometric features. The guide structures and tolerances are engineered so that the parts automatically find their correct relative positions without requiring external alignment tools or specialized assembly equipment.
3Reliability
If tight positioning tolerances are maintained, then proper hinge function is ensured, but installation complexity increases
Solution Approach 1:
The complementary mechanical component serves as a mediator that translates loose positioning tolerances into precise functional alignment. The guide structures within this component ensure that even with larger manufacturing tolerances, the hinge parts automatically achieve the correct relative positioning during installation.
Data Source
AI summary
A hinge including two parts, the first part having a folding portion formed by a first leaf having holes and the second leaf having mechanical components for support, the second part formed by a portion having mounting holes and complementary mechanical support components to those in the first part.