Door Hinge Wedge Adjustment Mechanism
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Solution Overview
Problem
Existing door hinges for building entrance doors are structurally complex, require a deep installation space, and lack precise vertical adjustment capabilities, making them inefficient for lateral and vertical door leaf adjustments.
Innovation Solution
A door hinge design featuring a receiving body composed of two sheet metal brackets with rotatably mounted adjusting spindles and integral strap tabs, allowing for vertical adjustment via a wedge surface and screw mechanism, reducing structural height and complexity while enabling precise vertical and lateral adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a clamping device with spindles and clamping plates is used to secure the hinge tab, then the hinge can hold the weight of the door leaf, but the structural height increases to about 22-25 mm and the construction becomes complex
Solution Approach 1:
The patent removes the clamping plates and spindle mechanism from the hinge assembly, retaining only the essential receiving body and hinge tab components. This extraction eliminates the height-consuming clamping mechanism while preserving the core load-bearing function through a simplified bracket-based structure with integrated mounting holes.
Solution Approach 2:
The receiving body is constructed from thin sheet metal brackets (0.5-1.5 mm thickness) that are stamped and bent into the required shape. These thin-walled metal structures provide sufficient structural strength to support the door leaf weight while maintaining a compact profile with minimal height requirement.
2Adaptability or versatility
If a complex receiving device with multiple adjustment mechanisms is used, then lateral and vertical adjustment of the door leaf is enabled, but the device requires a deep installation space and becomes structurally complex
Solution Approach 1:
The receiving body is divided into two separate sheet metal brackets that are connected together, with mounting holes positioned at different locations. This segmentation allows independent adjustment of lateral and vertical positions by selecting different hole combinations, providing versatility without requiring complex adjustment mechanisms.
Solution Approach 2:
Instead of using complex mechanical adjustment mechanisms that require deep installation space, the patent employs a multi-hole pattern arrangement on the brackets. This allows adjustment in multiple dimensions (lateral and vertical) by simply repositioning the mounting holes, transforming a three-dimensional adjustment problem into a two-dimensional hole-pattern solution.
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
The solution provides a compact, structurally simple door hinge with low height, enabling precise vertical and lateral adjustments, suitable for various door types, including rebated and butt doors, with improved stability and ease of installation.
Implementation Method 1
at least one bracket (6, 7) has at least one wedge surface (20) formed by folding. The fastening element (4, 4') has a threaded hole (21) in which an adjusting screw (22) acting on the wedge surface (20) is arranged for the vertical adjustment of the receiving body (5)
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a door hinge, particularly for building entrance doors, comprising a pivot joint (1) with a hinge leaf (2) and a receiving device (3) for receiving the hinge leaf (2). The receiving device (3) has at least one fastening element (4, 4') and a receiving body (5) adjustable relative to the fastening element (4, 4'). According to the invention, the receiving body consists of two interconnected brackets (6, 7) between which two adjusting spindles (8) are rotatably mounted. The adjusting spindles (8) engage threaded bores in the hinge leaf (2) inserted in the receiving body (5), the position of which can be adjusted by rotating the adjusting spindle (8). The brackets (6, 7) are sheet metal parts formed by stamping and bending, with at least one bracket (6) having a wedge-shaped surface (20) formed by the bending.The fastening element (4, 4') contains a threaded bore (21) in which an adjusting screw (22) acting on the wedge surface (20) of the sheet metal part (6) is arranged for vertical adjustment of the receiving body.