Variable Hinge Spring Tensioner Adjustment Mechanism
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Solution Overview
Problem
Conventional door hinges lack fine-tuning adjustments for optimal opening and closing angles, often resulting in doors opening too much or stopping prematurely due to limited adjustment intervals.
Innovation Solution
A hinge design featuring a spring tensioner system with axially and rotationally retained ends, allowing for incremental adjustments of torsional stop through compression and decompression of the spring, enabling precise control of the rotational twist between hinge members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional hinges use fixed stops at predetermined intervals (30° to 45°), then the hinge structure remains simple, but the adjustment precision is insufficient and doors may open too much or stop too early
Solution Approach 1:
The hinge transitions from fixed stops to a dynamic adjustable system. The spring tensioner can be rotated to different angular positions (0°, 45°, 90°, etc.) relative to the barrel, allowing the stop angle to be dynamically adjusted based on door width and installation requirements, rather than being fixed at predetermined intervals.
Solution Approach 2:
The hinge allows preliminary adjustment during installation by rotating the spring tensioner to the desired angular position before the door is hung. This preliminary setting establishes the correct stop angle in advance, ensuring precise door opening control from the beginning of use.
2Adaptability or versatility
If the spring tensioner is made adjustable with rotational freedom, then fine-tuning of door opening angles is enabled, but the mechanism complexity increases with multiple retention features
Solution Approach 1:
The retention mechanism is segmented into distinct functional features: axial retention features (protrusion and recess) that prevent movement along the barrel axis, and rotational retention features (teeth and grooves) that prevent rotation. This segmentation allows each feature to perform its specific function independently, simplifying the overall design despite the multi-degree-of-freedom constraints.
Solution Approach 2:
The spring tensioner provides dynamic adjustability by allowing rotation to multiple angular positions (0°, 45°, 90°, etc.) while maintaining stability at each position through the retention features. This creates a versatile adjustment system that adapts to different door configurations while keeping the mechanism relatively simple.
3Ease of operation
If the spring tensioner can rotate relative to the barrel, then torsional adjustment is enabled, but uncontrolled rotation would compromise hinge stability
Solution Approach 1:
The retention features are pre-configured in the barrel and spring tensioner to automatically engage when the spring tensioner is rotated to specific angular positions. This preliminary arrangement ensures that once adjusted, the hinge maintains stable retention without requiring continuous control, balancing ease of adjustment with operational reliability.
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 precise adjustment of the door's opening and closing angles, allowing for a wider range of settings beyond traditional 30° to 45° intervals, improving the door's operational stability and usability.
Implementation Method 1
a spring having a first end and a second end, where the spring has a predetermined torsion and the spring urges the spring tensioner to rotate to a predetermined rotational position
Implementation Method 2
the hinge also includes a first magnetic surface on the inner hinge member and a second magnetic surface on the outer hinge member... the first and second magnetic surfaces have the same polarity for repelling each other when the hinge is in a closed position
Data Source
AI summary
A hinge includes a first hinge member including a first barrel, a second hinge member including a first end barrel opposite a second end barrel, a spring having a first axially extending end and a second axially extending end opposite the first axially extending end, a spring tensioner having a first depression for receiving the first axially extending end of the spring and a second depression for receiving a driver. A retainer is coupled to the spring tensioner and includes an opening that is penetrable by the driver when the driver is being received in the second depression. A method of adjusting the hinge includes compressing an end of the spring and twisting the same.