Multi-joint Hinge Concealment for Rebated Doors
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Solution Overview
Problem
Conventional door hinges for rebated doors impair the visual appearance when closed, as they cannot be concealed within the rebate gap between the door leaf and frame, limiting their application to non-rebated doors.
Innovation Solution
Designing a multi-joint hinge with a modified configuration that allows it to be completely covered by the rebate in the closed state, featuring multiple axes of rotation and specific geometric adjustments to accommodate rebated doors, enabling the door leaf with rebate areas to move past the frame while concealing the hinge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a conventional door hinge is used for rebated doors, then the hinge can connect the door leaf and frame, but the hinge impairs the visual appearance when closed because it cannot be concealed within the rebate gap
Solution Approach 1:
The hinge is divided into multiple joint bodies (first joint body, second joint body, third joint body) connected through multiple axes of rotation. This segmentation allows each joint body to be positioned independently within the rebate gap, enabling the entire hinge assembly to be concealed while maintaining functionality. The first joint body is arranged in the rebate of the door leaf, the second joint body in the rebate of the frame, and the third joint body connects them, with all components fitting within the gap between door leaf and frame when closed.
2Shape
If multi-joint hinges are designed for concealed installation on non-rebated doors, then the hinge can be hidden, but the rebate on the door leaf cannot move past the frame
Solution Approach 1:
The hinge incorporates multiple axes of rotation (first axis, second axis, third axis) that enable dynamic movement of the door leaf relative to the frame. The first axis rotates the first joint body within the door leaf rebate, the second axis rotates the second joint body within the frame rebate, and the third axis connects the joint bodies. This multi-axis dynamic configuration allows the door leaf with its rebate to move past the frame during opening and closing operations while maintaining a concealed appearance when closed.
3Shape
If the hinge components are arranged to be completely covered by the rebate in closed state, then the visual appearance is maintained, but the hinge complexity increases
Solution Approach 1:
The hinge employs a nested arrangement where the first joint body is positioned in the rebate of the door leaf, the second joint body is positioned in the rebate of the frame, and the third joint body connects them, with all components nested within the gap between the door leaf and frame when closed. This nesting allows multiple functional components to be housed within the limited space of the rebate gap, achieving concealment without excessive complexity.
Data Source
Figure 1
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Figure 3
AI summary
The hinge (1) has two receiving bodies inserted in corresponding recesses (9, 10) in a door case (3) and a door leaf (2), respectively. The receiving bodies are pivotably connected at rotational axes through hinge bodies. The door case and the door leaf are partially provided with folding areas (4, 5). A gap (6) partially overlaps between the door case and the door leaf. The hinge is designed as a multilink hinge and is formed such that it is arranged in the gap in a closed condition of the door in a completely covered manner.