Slide rail assembly
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Solution Overview
Problem
Existing slide rail assemblies face challenges in synchronously moving multiple rails while ensuring secure positioning and preventing unintended retraction, particularly due to variations in market requirements for mounting configurations.
Innovation Solution
A slide rail assembly comprising a first rail, a second rail, a third rail, a synchronization member, and a fastening member, where the synchronization member engages with the second rail to move the third rail synchronously with the second rail initially, and the fastening member temporarily secures the third rail to prevent retraction, utilizing elastic members for force application and damping devices for controlled movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the third rail is movably mounted between the first rail and the second rail to enable independent movement, then the third rail can be positioned flexibly, but the third rail may move unsynchronously with the second rail
Solution Approach 1:
The synchronization member acts as an intermediary mechanism between the second rail and the third rail. It includes a first engagement portion that engages with the second rail and a second engagement portion that engages with the third rail, transmitting movement forces to ensure synchronous motion while allowing the third rail to be flexibly positioned between the first and second rails.
Solution Approach 2:
The synchronization member is designed with pivotable connections through shaft members, allowing it to dynamically adjust its orientation and engagement while maintaining the synchronous movement relationship. This dynamic design enables the system to adapt to position changes while preserving motion coordination.
2Stability of the object's composition
If the synchronization member continuously engages the third rail with the second rail, then synchronous movement is maintained, but the third rail cannot be temporarily held at a predetermined position
Solution Approach 1:
The fastening member is designed to be pivotable about a second shaft member, allowing it to transition between an engaged state (holding the third rail at a predetermined position) and a disengaged state (allowing synchronous movement). This dynamic switching capability enables both position holding and motion freedom as needed.
Solution Approach 2:
The fastening member is positioned and configured in advance to engage with the third rail at a specific predetermined location. When activated, it immediately secures the third rail at this pre-determined position, providing quick and reliable positioning without requiring complex adjustment mechanisms.
3Stability of the object's composition
If the fastening member is added to secure the third rail at a predetermined position, then position stability is improved, but the device complexity increases
Solution Approach 1:
The fastening member is integrated with the third rail through a pivotable connection at a second shaft member, merging the positioning function with the existing rail structure. This integration approach adds the necessary position holding capability while minimizing the increase in overall device complexity by reusing the rail structure and connection mechanisms.
4Ease of operation
If elastic members are used to provide forces for synchronization and fastening, then the operation is simplified, but the force control precision may be reduced
Solution Approach 1:
The elastic members are configured to automatically provide the necessary forces for synchronization and fastening operations without requiring external actuation. The elastic force self-regulates based on the engagement state, providing sufficient force for positioning while maintaining operational simplicity, and the force control precision is adequate for the application requirements.
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
Enables synchronized movement of the third rail with the second rail along a specific direction, followed by secure fastening to prevent retraction, while providing a damping effect for controlled extension and retraction, ensuring stable positioning and adaptability to different mounting configurations.
Implementation Method 1
a first elastic member configured to apply an elastic force to the synchronization member
Implementation Method 2
a second elastic member configured to apply an elastic force to the fastening member
Implementation Method 3
The third rail comprises a first pushing feature and a second pushing feature respectively located at two sides of the damping device. The first pushing feature and the second pushing feature of the third rail are configured to push the damping device along the opening direction and the retracted direction respectively, in order to allow the damping device to provide damping effect.
Data Source
AI summary
A slide rail assembly includes a first rail, a second rail, a third rail, a synchronization member and a fastening member. The third rail is movably mounted between the first and second rails. The synchronization member and the fastening member are movably mounted to the third rail. The synchronization member is configured to engage with the second rail, such that the second and third rails can be synchronously moved relative to the first rail along an opening direction. When the second and third rails are moved to a first predetermined position, the synchronization member is disengaged from the second rail. When the third rail is moved from the first predetermined position to a second predetermined position along the opening direction, the third rail is fastened to the first rail by the fastening member to prevent the third rail from being moved relative to the first rail along a retracted direction.