Sliding device
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Solution Overview
Problem
Conventional bi-fold type sliding devices experience tilting issues due to weight applied to the storage body, degrading operability.
Innovation Solution
A sliding device with a two-stage rail structure featuring open side surfaces and ball members between first and second rail members, including acute angles and insertion parts to enhance stability and resistance against loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional bi-fold sliding device is used, then the structure is simple, but the moving rail tilts and degrades operability when weight is applied to the storage body
Solution Approach 1:
The sliding device is divided into multiple ball members (at least three balls on a cross-section) distributed at different positions (upper, lower, and side portions) to independently support different segments of the load, preventing tilting by distributing the stabilizing function across multiple discrete elements
Solution Approach 2:
Ball members are introduced as intermediary elements between the first and second rail members to mediate the contact and support the load, replacing direct rail-to-rail contact and eliminating tilting through spherical geometry that maintains stable contact points
2Stability of the object's composition
If ball members are added to prevent tilting, then stability improves, but device complexity increases
Solution Approach 1:
Multiple ball members with identical spherical geometry and material properties are used throughout the structure, creating a homogeneous solution where each ball performs the same stabilizing function, simplifying manufacturing and assembly despite the increased number of components
Solution Approach 2:
The design specifies precise geometric parameters (acute angles for insertion parts, specific positions for ball seating) that optimize the distribution of load across ball members, achieving high stability with a minimal number of balls (at least three) rather than requiring complex mechanical structures
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 device provides stable support and improved resistance against torsional loads, ensuring smooth operation even under high loads.
Implementation Method 1
sliding devices may include rolling means in the form of of balls or rollers, and thus the sliding devices can move more smoothly
Implementation Method 2
an angle (θ) formed by a line (a), which connects centers of the first ball and the second ball, and the first lower portion or the second upper portion may be an acute angle
Data Source
AI summary
An embodiment of the present invention provides a sliding device comprising: a first rail member which is open at one side surface thereof; a second rail member which slides on the first rail member and is open at one side surface thereof; and ball members which are disposed between the first rail member and the second rail member such that at least three ball members are provided as seen in a cross section, wherein the first rail member and the second rail member are arranged to be engaged with each other through the open side surfaces.