Aluminum Door Hinge with Oblique Fixing Screw and Adjusting Spindle
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Solution Overview
Problem
Existing door hinges for aluminum doors face challenges in achieving precise, stepless lateral adjustment with a compact design, often requiring complex structures and large space, and struggle with precise positioning and high load capacity.
Innovation Solution
A door hinge design featuring an adjusting spindle with obliquely arranged fixing screws and a carrier system with threaded pins for pressure adjustment, allowing for precise and compact lateral adjustment without the need for additional adjusting means, and utilizing a carrier for even force distribution to secure heavy door leaves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional adjusting spindles with receptacles are used for lateral adjustment, then adjustment functionality is achieved, but the structural height and device complexity increase
Solution Approach 1:
The invention extracts the adjusting spindle from the receptacle structure, allowing the receptacle to be a simple mounting element without integrated adjusting mechanisms. The adjusting spindle becomes a separate component that interfaces with the hinge flap, simplifying the receptacle design while maintaining full adjustment functionality.
Solution Approach 2:
The door hinge is divided into distinct functional components: the receptacle for mounting, the adjusting spindle for lateral adjustment, and the fixing screw for securing. This segmentation allows each component to be optimized independently, reducing overall complexity while maintaining adjustment capabilities.
2Ease of operation
If adjusting spindles are integrated into the receptacle, then lateral adjustment is enabled, but the construction height on the extruded profile increases
Solution Approach 1:
The adjusting spindle extends in a horizontal direction rather than increasing vertical height. The oblique arrangement of the fixing screw allows the adjusting mechanism to operate in a different spatial dimension, keeping the construction height on the extruded profile minimal while enabling continuous lateral adjustment.
3Ease of manufacture
If the fixing screw is arranged perpendicular to the hinge flap, then simple mounting is achieved, but the receptacle height and gap requirements increase
Solution Approach 1:
The fixing screw is arranged at an oblique angle rather than perpendicular to the hinge flap. This asymmetric arrangement allows the screw to engage with the hinge flap at an optimized angle, reducing the required receptacle height and minimizing the gap between the door leaf and door frame while maintaining secure fixation.
4Manufacturing precision
If spacers are used for lateral adjustment, then positioning is achieved, but the setting complexity and discrete steps are increased
Solution Approach 1:
The adjusting spindle enables dynamic, continuous lateral adjustment of the hinge flap, replacing static spacer-based positioning. The threaded mechanism of the adjusting spindle allows for smooth, stepless adjustment to any position within the available range, eliminating the discrete steps and complexity associated with multiple spacer configurations.
Data Source
Figure 1
Figure 2
AI summary
The hinge has two band portions (1a, 1b) including reel sections (2a). An adjusting spindle (20) is kept at a hinge strap (16) and extended into a slot (17) such that immersion depth of the hinge strap is adjusted into the slot by turning the adjusting spindle. An absorption part (8) includes a fixing screw (21) that is arranged with a screw longitudinal axis at a specific angle of the hinge strap. The fixing screw is directly pressed on the hinge strap after tightening the screw such that adjustment required for displacement is eliminated by the adjusting spindle.