Slide Rail Assembly Movable Supporting Base Stability
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Solution Overview
Problem
Prior slide rail assemblies are unstable when carrying a chassis drawn out from a rack, as only a small portion of the middle rail is supported by the outer rail, leading to instability.
Innovation Solution
A slide rail assembly with a movable supporting base that allows the middle rail to be supported when pulled out, ensuring stability by moving into a supporting passage defined by the supporting base, which is arranged on a bracket and can move relative to it.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the middle rail and inner rail are pulled out, then the chassis can be drawn from the rack, but the middle rail dangles without support causing instability
Solution Approach 1:
The supporting base is designed to move dynamically along with the middle rail when the chassis is drawn out. The supporting base includes moving portions that ride on the middle rail and outer rail, automatically adjusting its position to maintain support as the rail assembly extends. This dynamic adaptation resolves the contradiction by providing continuous support during the drawout operation.
Solution Approach 2:
The supporting base acts as an intermediary structure between the outer rail and the middle rail. It transfers and distributes the load from the pulled-out middle rail to the outer rail through its moving portions, preventing the middle rail from dangling and maintaining system stability during chassis extraction.
2Device complexity
If only a small portion of the middle rail is supported by the outer rail, then the structure remains simple, but the chassis cannot be carried stably when drawn out
Solution Approach 1:
The supporting base is divided into multiple moving portions: a first moving portion that contacts the middle rail, a second moving portion that contacts the outer rail, and a connecting portion that links them. This segmentation allows each portion to perform its specific support function independently while working together to provide comprehensive stability.
Solution Approach 2:
The supporting base utilizes dynamic moving portions that automatically adjust their positions along the rails during chassis drawout. The first moving portion slides on the middle rail while the second moving portion slides on the outer rail, creating a dynamic support system that adapts to the changing geometry of the extended assembly.
Data Source
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AI summary
A slide rail assembly (10) includes a first rail (20), a second rail (30, 40), a bracket (50) and a supporting base (70). The first rail (20) defines a first passage along a first direction. The second rail (30, 40) is movably connected to the first rail (20) and is movable relative to the first rail (20) in the first passage. The bracket (50) is connected to an end of the first rail (20). The supporting base (70) is movably arranged on the bracket (50) and is movable along the first direction relative to the bracket (50). The supporting base (70) includes a first supporting portion (72) defining a supporting passage corresponding to the first passage, and the supporting base (70) is configured to allow the second rail (30) to move into the supporting passage.