Slide rail assembly
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Solution Overview
Problem
Existing slide rail assemblies suffer from deformation or bending of the inner rail due to unsupported rear sections when retracted, and additional ball bearings for support compromise design space and interactive mechanisms.
Innovation Solution
A slide rail assembly with two slide-aiding devices on each rail, where one device supports the front section and the other the rear section of the second rail when retracted, and a mechanism to prevent displacement in opposite directions, utilizing rolling members and working members with elastic forces and blocking arrangements to maintain structural integrity and enable synchronized movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single slide-aiding device is used to support the inner rail, then the structure is simple, but the rear section of the inner rail is not supported causing deformation or bending
Solution Approach 1:
The single slide-aiding device is divided into two separate slide-aiding devices: a first slide-aiding device supporting the front section of the inner rail and a second slide-aiding device supporting the rear section. This segmentation allows each device to independently support specific sections, eliminating the deformation problem while maintaining reasonable structural complexity
Solution Approach 2:
The second slide-aiding device acts as an intermediary element that specifically supports the rear section of the inner rail that was previously unsupported. This intermediary component resolves the support gap without requiring complete redesign of the entire sliding mechanism
2Stability of the object's composition
If an additional ball bearing is added to support the end of the inner rail, then the support coverage is improved, but the design space for interactive mechanisms is reduced
Solution Approach 1:
Instead of adding a single ball bearing at the end, the support function is segmented into two distributed slide-aiding devices along the inner rail. This segmentation provides support coverage without concentrating space occupation at the critical end area, preserving design space for interactive mechanisms
Solution Approach 2:
The support mechanism transitions from a point-based ball bearing at the end to a distributed arrangement of two slide-aiding devices along the rail length. This dimensional redistribution of support elements improves coverage while maintaining clearance for interactive mechanisms in the end passage area
3Ease of operation
If the second slide-aiding device is allowed to displace freely with the second rail, then the support function is maintained, but the device cannot be positioned to prevent displacement in opposite direction
Solution Approach 1:
The second slide-aiding device is designed with dynamic characteristics: it can displace with the second rail during normal operation to maintain support function, but can be positioned and locked by the blocking arrangement to prevent displacement in the opposite direction. This dynamic design satisfies both operational flexibility and positional stability requirements
Solution Approach 2:
The blocking arrangement acts as an intermediary mechanism that selectively controls the displacement of the second slide-aiding device. It allows displacement in the intended direction while preventing opposite displacement, thereby ensuring reliability without compromising the support function
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
Prevents deformation of the second rail by evenly distributing load across its sections, allows for synchronized displacement, and maintains structural integrity by ensuring the second slide-aiding device remains in position, enhancing the functionality and design flexibility of the slide rail assembly.
Implementation Method 1
The first slide-aiding device and the second slide-aiding device both comprise a plurality of rolling members. When the second rail is at a retracted position relative to the first rail, the plurality of rolling members of the first slide-aiding device and the plurality of rolling members of the second slide-aiding device support different sections of the second rail.
Implementation Method 2
the slide rail assembly further comprises a first resilient member that provides an elastic force to the first working member
Data Source
AI summary
A slide rail assembly includes a first rail, a second rail, a first slide-aiding device and a second slide-aiding device. The second rail is displaceable relative to the first rail. The first slide-aiding device and the second slide-aiding device are arranged at the first rail. When the second rail is located at a retracted position relative to the first rail, the first slide-aiding device and the second slide-aiding device are configured to support the second rail.