Vertically Adjustable Self-Closing Hinge Mechanism
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Solution Overview
Problem
Self-closing door hinges lack vertical adjustment capabilities, which can be a limitation in applications requiring increased water performance or decreased threshold height, as traditional methods like vertical adjustments in the threshold may not be feasible.
Innovation Solution
The development of vertically adjustable self-closing hinges that include a ratchet plug, torsion spring, and spindle mechanism, allowing for vertical adjustment by rotating a screw along the hinge axis, thereby increasing torque force and enabling movement of the door leaf relative to the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional self-closing hinges are used, then self-closing functionality is provided, but vertical adjustment capability is lost
Solution Approach 1:
The patent combines multiple functions into a single hinge assembly: the self-closing torsion spring mechanism, the vertical adjustment screw mechanism, and the ratchet locking system are integrated into one unified structure. This allows the hinge to provide both automatic closing and vertical adjustment capabilities without requiring separate mechanisms, thereby improving adaptability while controlling complexity.
Solution Approach 2:
The hinge assembly is designed to perform multiple functions: it provides self-closing action through the torsion spring, vertical adjustment through the threaded screw mechanism, and position locking through the ratchet system. This multi-functionality allows a single component to replace what would traditionally require multiple separate mechanisms, addressing the need for both adaptability and manageable complexity.
2Adaptability or versatility
If threshold height is adjusted to compensate for lack of hinge adjustment, then vertical positioning is achieved, but water performance and threshold height requirements are compromised
Solution Approach 1:
The hinge incorporates a dynamic adjustment mechanism where a threaded screw can be rotated to move the door leaf vertically along the hinge axis. This dynamic capability allows the door to be positioned at any vertical level within the hinge's adjustment range, enabling proper water performance and threshold height without requiring permanent threshold modifications.
Solution Approach 2:
The vertical position of the door leaf is controlled by changing the mechanical parameter of the hinge assembly through screw rotation. This parameter change mechanism allows precise vertical positioning of the door, enabling optimization of water performance and threshold height relationships without compromising either requirement.
3Stability of the object's composition
If ratchet mechanism is added to prevent spindle rotation, then vertical position is locked, but adjustment flexibility is reduced
Solution Approach 1:
The ratchet mechanism provides periodic locking action: the spring-loaded ratchet pawl engages with the ratchet teeth to lock the vertical position, but can be easily disengaged by applying force in the adjustment direction. This periodic engage-disengage action allows the system to maintain stability during normal operation while remaining easily adjustable when needed.
Solution Approach 2:
The ratchet mechanism is designed to automatically lock the vertical position once adjusted, providing self-service stabilization. The spring-loaded pawl automatically engages with the ratchet teeth to maintain the set position without requiring additional locking actions, while still allowing easy adjustment by overcoming the light spring force in the adjustment direction.
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 vertical adjustment of door panels without the need for threshold modifications, enhancing water performance and flexibility in door system design while maintaining self-closing functionality.
Implementation Method 1
a torsion spring located in the central knuckle, wherein the torsion spring comprises a first end proximate the first knuckle and a second end proximate the second knuckle
Implementation Method 2
a biasing element located between the first end of the torsion spring and the ratchet portion of the first spindle, wherein the biasing element is configured to force the ratchet portion of the first spindle into engagement with the ratchet features on the ratchet plug
Implementation Method 3
a screw located in the second knuckle, wherein the second knuckle and the screw comprise complementary threads such that rotation of the screw in a first direction about the hinge axis moves the screw along the hinge axis towards the first knuckle
Data Source
AI summary
Self-closing door hinges with vertical adjustment, door systems incorporating the hinges, and related methods are described herein.