Slide Rail Supporting Base for Extended Load Capacity
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Solution Overview
Problem
In slide rail assemblies for rack-based server systems, the load-bearing capacity of the second rail is compromised when it is extended, as a section of the rail remains unsupported by the first rail, posing challenges in mounting electronic equipment chassis.
Innovation Solution
A supporting base is introduced, which is movably mounted to a bracket base and includes a wall portion and transverse supporting portions defining a supporting channel aligned with the first rail's longitudinal channel, allowing the second rail to be supported during displacement from a retracted to an extended position, thereby enhancing load-bearing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the second rail is extended relative to the first rail to increase the reach of the slide rail assembly, then the extended position is achieved, but the load-bearing capacity of the second rail deteriorates due to the unsupported section
Solution Approach 1:
A supporting base is introduced as an intermediary component between the first rail and the second rail. The supporting base includes a supporting channel that receives and supports the second rail when it is in the extended position, preventing the unsupported section from compromising load-bearing capacity while maintaining the extended reach of the assembly
2Length of moving object
If the second rail is made longer to provide extended position, then the reach is increased, but the structural stability deteriorates due to the unsupported section
Solution Approach 1:
The supporting base acts as a mediator that provides intermediate support for the extended section of the second rail. The supporting channel in the supporting base receives the second rail, ensuring that even when extended, the second rail maintains structural stability through the additional support point
3Strength
If a supporting base is added to support the extended second rail, then the load-bearing capacity is improved, but the device complexity increases
Solution Approach 1:
The supporting base is integrated with the bracket base through movable connection, merging multiple functions into a unified structure. The supporting base combines the functions of support provision and movable adjustment, reducing the need for separate components while maintaining improved load-bearing capacity
4Strength
If the supporting base is rigidly fixed to provide support, then the load-bearing capacity is improved, but the ease of operation deteriorates due to restricted movement
Solution Approach 1:
The connection between the supporting base and bracket base is designed to be movable rather than rigid, allowing the supporting base to dynamically adjust its position. This enables the second rail to be smoothly guided into and out of the supporting channel while maintaining support when needed, balancing load-bearing capacity with operational ease
Data Source
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AI summary
A slide rail assembly (20) includes a first rail (22), a second rail (28) movably connected to the first rail (22), a bracket base (24) connected to the first rail (22), and a supporting base (26) movably mounted to the bracket base (24). The supporting base (26) includes a wall portion (50) and at least one supporting portion (52) transversely connected to the wall portion (50). The wall portion (50) and the at least one supporting portion (52) jointly define a supporting channel (54) corresponding to a longitudinal channel (44) defined by the first rail (22). The at least one supporting portion (52) of the supporting base (26) supports the second rail (28) as the second rail (28) is longitudinally displaced relative to the first rail (22) and extends through the longitudinal channel (44) of the first rail (22) and the supporting channel (54) of the supporting base (26).