Pull-Out Shelf Guide Mechanism for Stable Corner Cabinet Sliding
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Solution Overview
Problem
Existing pull-out mechanisms for shelves in corner cabinets suffer from irregular sliding and potential accidental release due to deformability under high loads, especially after prolonged use and overloading.
Innovation Solution
A moving mechanism featuring a double slider and double track system supported by stiffened plates with a trellis-style fin structure, ensuring regular and repeatable movement and high structural rigidity to prevent accidental release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single slider and single track system is used for pull-out shelves, then the device complexity is reduced, but the reliability and regularity of sliding deteriorates after prolonged use and under high loads
Solution Approach 1:
The single slider and track are divided into two identical sliders and two identical tracks arranged symmetrically. Each slider engages with both tracks, creating a segmented system where the load and movement are distributed across multiple identical units, ensuring regular and reliable sliding even under high loads and after prolonged use.
2Ease of manufacture
If the track structure is simplified, then the ease of manufacture is improved, but the structural rigidity and resistance to accidental release deteriorates under high overloading
Solution Approach 1:
Two identical track structures are merged into a single assembly where both tracks are rigidly connected to the same support structure. The shelves are supported by both tracks simultaneously, combining the strength of multiple tracks while maintaining the simplicity of standardized track components for ease of manufacture.
3Ease of operation
If the shelf trajectory is optimized for easy access through the access opening, then the ease of operation is improved, but the manufacturing precision required for the track shape increases
Solution Approach 1:
The shelf movement follows a periodic trajectory defined by the sinusoidal shape of the tracks. The track geometry is designed with regular repeating patterns (sinusoidal curves) that guide the shelf through a consistent, predictable path during insertion and withdrawal, optimizing accessibility while using standard manufacturing techniques for creating periodic geometric shapes.
Data Source
AI summary
A cabinet (1) with a containment space (2), shelves (9) contained in the containment space (2), an access opening (3) to the containment space (2) and a moving mechanism (4) for moving the shelves (9) through said opening (3); wherein said moving mechanism (4) comprises a first arm (5) and a second arm (6), which are sustained by the cabinet (1), cantilever-style, inside the containment space (2), and rotatably about a vertical line (V), said first arm (5) and second arm (6) in turn sustaining a related shelf (9) in a condition in which it can rotate, turning about at least one vertical line (V); at least the second arm (6) of said arms (5, 6) being provided with two component segments (10, 11), converging at an interposed articulated joint (12); and control and guiding means (13) for coordination of the movement of said first arm (5) and second arm (6) which are designed to allow the shelf (9) to travel along a horizontal trajectory with variable orientation of its positioning, in such a way as to pass through the access opening (3) of said cabinet (1). The control and guiding means (13) comprise a double slider (14) and a double track (16) relative to which said double slider (14) is movable, said sliders (14) and said tracks (16) being constantly coupled to one another, and operatively positioned between said first arm (5) and second arm (6).