Folding Cabinet Leaves With L-Shaped Guide and Gravity Extraction
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Solution Overview
Problem
Existing furniture items with sliding and folding leaves have complex movement mechanisms, which are cumbersome and require multiple user actions, making them difficult to use.
Innovation Solution
A furniture item with a compartment that uses an L-shaped guide and a column element hinged to parallel guides, allowing leaves to fold and slide in a bellows-like motion, facilitated by gravity and synchronized with an anchoring device for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If sliding and folding leaves are used to reduce leaf size when opened, then the leaves can be compacted and moved together along one side of the furniture item, but the leaf movement mechanism becomes very complex and complicated by lower wheels mounted on the leaves
Solution Approach 1:
The invention extracts the lower wheels from the leaves and relocates them to the furniture item frame. This separation simplifies the leaf structure itself while maintaining the compacting function. The leaves become simpler planar elements that fold without complex mechanisms, while the wheels remain stationary on the frame to provide support and movement capability.
Solution Approach 2:
The leaf assembly is segmented into multiple leaves that can fold independently relative to each other. Each leaf is a simpler component that folds along defined axes, avoiding the need for complex integrated mechanisms. The segmentation allows progressive folding from fully extended to compacted position through simple hinge movements.
2Adaptability or versatility
If a complex leaf movement mechanism with lower wheels is used, then the leaves can slide and fold, but the mechanism requires multiple user actions and is difficult to use
Solution Approach 1:
The invention merges the folding function with a single user action of pulling the leaves outward. The previously separate functions of sliding and folding are combined into one continuous motion where the leaves unfold and extend simultaneously. This eliminates the need for multiple discrete user actions and simplifies operation to a natural pulling motion.
Solution Approach 2:
The leaves are pre-configured with hinge connections and guide elements that automatically guide the folding and sliding motion during the single pulling action. The mechanical geometry is designed so that the user's pull automatically triggers the coordinated unfolding and extension without requiring the user to perform separate manipulation steps.
3Extent of automation
If the column element moves along inclined guides using gravity, then the leaves can be extracted and unfolded automatically, but the column element must be heavy enough to overcome friction and drag
Solution Approach 1:
The inclined guides are designed with a specific angle that creates a gravitational force component sufficient to overcome the drag and friction forces during leaf extraction. The gravity-driven motion on the incline provides the necessary driving force without requiring additional motors or actuators, achieving automation through clever use of gravitational physics.
Solution Approach 2:
The guides are set at a specific inclination angle that optimizes the conversion of gravitational potential energy to kinetic energy for moving the leaves. By changing the geometric parameter of the guide angle, the system achieves automatic motion with minimal additional weight, balancing the gravitational driving force against the drag forces in the system.
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 simple, efficient, and low-tiring mechanism for opening and closing the compartment, minimizing user effort and reducing mechanical complexity.
Implementation Method 1
The column element has such a—or a sufficient—weight to make it slide on the guides for dragging the leaves only thanks to the force of gravity
Implementation Method 2
The column element is slidingly mounted on parallel guides by means of skids, so that it always moves horizontally when the skids slide on the guides
Data Source
AI summary
A furniture item is described comprising compartment, an L-shaped guide arranged on the ceiling of the furniture item, and a first and second leaf to uncover or close the compartment. Thanks to a column element hinged at one end of the second leaf and coupled with two parallel guides mounted on the side of the furniture item, the leaves can be moved.