Table extension fitting for a table with a table top and an extension plate and table with a table extension fitting
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Solution Overview
Problem
Existing table extension fittings require significant effort and space to operate, pose risks of damage and injury, and complicate cleaning due to design flaws in previous solutions.
Innovation Solution
A table extension fitting with a tilt-and-turn joint mechanism that allows the extension panel to be easily mounted under the table, requiring minimal effort and space, and features a linear guide system for stability and adjustability, ensuring secure and precise operation without visible components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the extension leaf is pulled out completely from under the tabletop, then the extension is achieved, but the torque and space requirements become excessive
Solution Approach 1:
The extension mechanism is divided into two independent stages: a pull-out stage where the extension leaf is drawn out partially from under the tabletop, and a tilting stage where the leaf is tilted into final position. This segmentation allows the pull-out distance to be limited while achieving full extension through the combined motion, thereby reducing the torque required on the pull-out mechanism.
2Reliability
If the extension mechanism is made robust to withstand forces and torques, then reliability is improved, but the device complexity and space requirements increase
Solution Approach 1:
The extension mechanism transitions from a static, fully-extended design to a dynamic two-stage system. The pull-out mechanism only needs to handle partial extension forces, while the tilting mechanism handles the remaining motion. This dynamic approach distributes the mechanical loads across different components and stages, allowing each component to be simpler and more compact while maintaining overall reliability.
3Device complexity
If the extension leaf is carried by the user, then the pull-out mechanism is simplified, but the ease of operation deteriorates due to physical effort and damage risk
Solution Approach 1:
The tilting mechanism acts as an intermediary between the pull-out mechanism and the extension leaf. Instead of the user directly carrying the heavy leaf, the user operates the tilting mechanism which then positions the leaf. This intermediary mechanism transforms the operation into a safer, easier task while keeping the overall system relatively simple.
4Volume of moving object
If the extension mechanism is made compact, then space requirements are reduced, but the manufacturing precision and assembly difficulty increase
Solution Approach 1:
The mechanism is segmented into modular components (pull-out mechanism, tilting mechanism, connection joints) that can be manufactured and assembled separately. This modularity allows each component to be optimized for compactness while maintaining manufacturing precision through standardized interfaces and assembly procedures, reducing the overall complexity of precision requirements.
Data Source
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Figure 7~8
AI summary
The table extension fitting according to the invention for a table (1) with a table top (2) and a pull-out plate (4), comprises a pull-out (5, 6) which is intended to be attached to the underside (2.2) of the table top (2), the pull-out panel (4) being movable with the extension (5, 6) between a parking position located under the table top (2) and an intermediate position located next to the table top (2). In addition, a tilt and turn joint (7, 8) is provided, which is connected to the extension (5, 6) and is intended to be attached to the extension plate (4), with the tilt and turn joint (7, 8) the pull-out panel (4) is rotatable and tiltable so that it can be moved between the intermediate position and a use position.