Concealed Hinge Parallel Pin Vertical Assembly
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Solution Overview
Problem
Concealed hinges for doors and windows face complex assembly, require multiple operators, and have low mechanical seal due to fragile cantilevered plate connections, especially when subjected to stress during wide-angle opening and closing.
Innovation Solution
A concealed hinge design featuring a pair of parallel cylindrical pins for stable wing connection, forming a rigid 'U' structure with adjustable height, simplifying assembly and enhancing mechanical seal through a robust and adjustable configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the two hinge bodies are assembled by horizontal movement towards each other as described in EP 1 223 278, then the hinge can be mounted with the rotation pin housed in the fixed frame, but the assembly becomes extremely complex and requires at least two operators
Solution Approach 1:
Instead of moving the two hinge bodies horizontally towards each other as in prior art, the patent inverts the assembly approach by having the second hinge body move vertically downwards onto the first hinge body. This inversion of the assembly direction simplifies the coupling process and allows single-operator installation.
Solution Approach 2:
The patent changes the assembly dimension from horizontal movement (prior art) to vertical movement. The second hinge body is positioned above the first hinge body during assembly and then moved vertically downwards to engage with the rotation pin, transforming a complex horizontal coupling operation into a simpler vertical insertion operation.
2Ease of manufacture
If the two hinge bodies are assembled by horizontal movement towards each other, then the hinge can be mounted with separated hinge bodies, but the assembly becomes slow and difficult especially for heavy doors or windows
Solution Approach 1:
The patent inverts the assembly sequence and direction: instead of bringing two separate hinge bodies together horizontally, the second hinge body is positioned above and moved vertically downwards onto the first hinge body. This inversion dramatically speeds up the assembly process and makes it feasible for heavy doors and windows.
Solution Approach 2:
The patent applies preliminary action by pre-positioning the second hinge body above the first hinge body in the correct orientation before the actual coupling operation. This preliminary positioning ensures that the vertical movement directly engages the coupling elements, eliminating the need for complex horizontal alignment maneuvers and speeding up the overall assembly process.
3Ease of manufacture
If the two plates are joined in a cantilever fashion, then the hinge can be assembled with separated hinge bodies, but the mechanical seal becomes low and the joining becomes fragile over time
Solution Approach 1:
The patent inverts the joining approach from cantilever fashion (where plates extend outward from a central point) to a stacked configuration where the second hinge body moves vertically onto the first hinge body. This inversion creates a more robust, enclosed connection that maintains mechanical seal and prevents the fragile joining issues of cantilever construction.
Solution Approach 2:
The patent applies the nesting principle by having the second hinge body nest onto the first hinge body through vertical movement. The rotation pin and associated components are housed within the socket of the first hinge body, creating a nested, enclosed structure that provides better mechanical seal and greater reliability compared to exposed cantilever joints.
4Ease of manufacture
If the hinge bodies are assembled with cantilevered plate connections, then the hinge can be mounted with separated components, but the connections become fragile when the door or window is stressed during wide-angle opening and closing
Solution Approach 1:
The patent inverts the connection geometry from cantilevered plates extending outward to a vertical stacking arrangement where the second hinge body moves downward onto the first. This inversion creates load paths that are more resistant to the stresses of wide-angle opening and closing, significantly improving connection strength.
Solution Approach 2:
The patent changes the connection dimension from horizontal cantilever extension to vertical stacking. This dimensional change allows the connection to better withstand the moment loads and shear forces generated during wide-angle operation, as the vertical arrangement provides greater structural rigidity and load distribution.
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
Described is a hinge for doors and windows comprises a first hinge body (1) having a central socket (2) and associated in a corresponding recessed cavity made on the profile of an upright (3) of the fixed frame; a pin (4) defining an axis (Z) of vertical rotation of the hinge (100) and positioned and constrained inside the socket (2) of the first hinge body (1); a first wing (5) integral with the rotation pin (4) and protruding radially from the rotation pin (4); a second hinge body (6) with a flat profile fixed on the outer surface of the profile of an upright (7) of a mobile frame or sash; a second wing (8) integral with the second hinge body (6) and protruding from the second hinge body (6); a device (9) for a stable joining between the first (5) and the second (8) wing positioned between them first (5) and second (8) wing; the device (9) for a stable joining between the first (5) and the second (8) wing comprises a pair of pins (10, 11) parallel to each other, associated with the first wing (5); this pair of pins (10, 11) protrudes from the first wing (5), parallel to the axis (Z) of rotation vertical, and slidably coupled, in a pair of corresponding cavities (12, 13) made on the second wing (8) in such a way as to form a single rigid wing.