Two-Stage Adjustable Door Hinge with Geared Access
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Solution Overview
Problem
Conventional door hinges lack adjustable features for vertical and horizontal alignment, leading to improper sealing, air drafts, and potential damage due to misalignment, especially in structures where material shrinkage or settling occurs, and existing solutions do not provide accessible adjustment mechanisms for easy alignment and re-adjustment.
Innovation Solution
An adjustable door hinge system with a first hinge member fixed to the frame and a second hinge member with a housing for recessed mounting, featuring translational support members for independent vertical and horizontal adjustments, accessible through a cover plate with geared screws to prevent unintended changes and provide mechanical advantage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional flush-mounted hinges are used, then the hinge is concealed and aesthetically pleasing, but the hinge lacks any adjustment capability for door alignment
Solution Approach 1:
The hinge is divided into separate adjustment mechanisms that can be independently controlled. The adjustment feature includes a housing with a cover plate that can be accessed separately from the main hinge body, allowing adjustment functionality to be added without replacing the entire hinge assembly.
Solution Approach 2:
A cover plate serves as an intermediary component that provides access to adjustment screws while maintaining the concealed appearance of the hinge. The cover plate can be removed or opened to expose the adjustment mechanism, then closed to restore the aesthetic appearance.
2Manufacturing precision
If the door is mounted without adjustment mechanisms, then the installation is simple, but the door cannot be properly aligned with the frame leading to sealing problems
Solution Approach 1:
The adjustment mechanisms are pre-configured in the hinge during manufacturing, with adjustment screws positioned to allow future alignment corrections. The cover plate is pre-designed with access points that enable users to reach and adjust the screws without disassembling the entire hinge.
Solution Approach 2:
The hinge design allows end-users to perform their own alignment adjustments without requiring professional installation services. The adjustment screws are positioned to be accessible through the cover plate, enabling DIY alignment corrections.
3Reliability
If the hinge provides vertical and horizontal adjustment, then door alignment and sealing are improved, but the hinge structure becomes more complex requiring additional components
Solution Approach 1:
Both vertical and horizontal adjustment capabilities are merged into a single housing structure. The adjustment screws are positioned within the same housing, allowing both adjustment functions to be accessed through a single cover plate rather than requiring separate mechanisms.
Solution Approach 2:
The housing serves multiple functions: it contains the hinge pin connection, provides structural support, and houses the adjustment mechanisms. The cover plate serves dual purposes as both a protective cover and an access point for adjustments.
4Ease of operation
If adjustment components are made accessible, then ease of adjustment is improved, but the concealed appearance of the hinge is compromised
Solution Approach 1:
The cover plate is designed to be dynamically removable or openable to expose the adjustment screws when needed, then closed to restore the concealed appearance. This dynamic access allows the hinge to switch between aesthetic and functional states.
Solution Approach 2:
Only the specific area where adjustment is needed is exposed through the cover plate opening, while the rest of the hinge remains concealed. This localized access minimizes the impact on the overall aesthetic appearance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy and precise adjustment of door position relative to the frame, ensuring optimal sealing and minimizing air leaks and structural damage, while allowing for re-adjustment without dismounting the hinges, even with heavy doors.
Implementation Method 1
geared screws to prevent unintended changes and provide mechanical advantage
Data Source
AI summary
A door hinge adapted to provide vertical and depth adjustments of an engaged door with a door frame. The hinge features a first hinge member adapted for fixed recessed engagement to a side edge of a door jam which is rotationally engaged with a support member extending from a second hinge member adapted for engagement to the door. Adjustment of height and depth of the door inside the door jam is easily achieved by rotation of adjustment screws accessible from a single surface that is visible when the second hinge member is engaged to the door.