Sliding Door Lever Mechanism for Parallel Pull-Out Movement
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Solution Overview
Problem
Existing sliding door mechanisms face challenges in achieving smooth movement and design flexibility, particularly in furniture applications, as they often require significant space and can interfere with adjacent elements during operation.
Innovation Solution
A mechanism involving a pull-out guide rail and lever arms, with a lock-and-release mechanism, allows the door to be turned outward in stages, ensuring parallel alignment before sliding, thus enabling smooth movement and concealing the guide rail for improved design options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional sliding door mechanism is used, then the door can move from closed to open position, but the guide rail and mechanism components are visible and interfere with adjacent items during movement
Solution Approach 1:
The guide rail is extracted from the visible front area and relocated to the rear side of the door assembly. The mechanism components are separated into distinct functional modules, with the guide rail serving purely as a structural support element hidden from view, while the operational components are positioned to minimize interference with adjacent items.
Solution Approach 2:
The door movement is transitioned from a simple linear sliding motion to a multi-dimensional path involving initial outward turning followed by parallel sliding. This dimensional change allows the door to clear adjacent items during opening while maintaining a clean aesthetic appearance when closed.
2Adaptability or versatility
If the door is turned outward in stages before sliding, then interference with adjacent items is reduced, but the mechanism complexity increases
Solution Approach 1:
The door opening operation is segmented into two distinct phases: first an outward turning motion to clear adjacent items, then a parallel sliding motion to achieve full opening. This segmentation is achieved through a hinge mechanism coupled with a guided sliding track, allowing each phase to be independently optimized.
Solution Approach 2:
A intermediate hinge connection is introduced between the door and the guide rail system. This intermediary component facilitates the transition from the closed position to the parallel sliding position, enabling the multi-stage movement while maintaining overall mechanism simplicity through modular design.
3Shape
If the guide rail is concealed when the door is closed, then aesthetic appearance is improved, but the mechanism for achieving this concealment becomes more complex
Solution Approach 1:
The guide rail structure is merged with the door frame assembly, allowing the rail to be positioned on the rear side where it is hidden from view when the door is closed. The structural support function and the aesthetic concealment function are combined into a single integrated design element.
Solution Approach 2:
The door is preliminarily positioned in a parallel orientation relative to the opening plane before the sliding motion begins. This preliminary positioning action ensures that when the door is closed, the guide rail and mechanism components are already in a concealed configuration, maintaining aesthetic appearance without requiring additional complex mechanisms.
Data Source
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AI summary
A method and mechanism for moving an element, such as a sliding door (1), is disclosed. In the movement a first end of the element is first turned outwards, a second opposite end is then turned out placing the element in parallel with the original location of the element. The element is then displaced by extending a pull-out guide (4). The mechanism comprises a housing (2), the pull-out guide rail (4), a lock-and-release mechanism (19) and at least two lever arms (8, 11, 14, 16, 27, 30, 33, 39, 42). One end of a first lever arm (8, 27, 39) is received in a pivoting point (10, 29, 41) at the pull-out guide rail (4) and the opposite end of said lever arm (8, 27, 39) is received in a pivoting point (9, 28, 40) at the housing (2). The pivoting point (10, 29, 41) at the pull-out guide rail (4) is placed at a first end of the pull-out guide rail (4).