Slide rail assembly
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Solution Overview
Problem
Existing slide rail assemblies lack a mechanism to indicate when the second and third rails are about to reach specific positions relative to the first rail, failing to meet market requirements for precise positioning and damping control.
Innovation Solution
Incorporating a damping device with first and second pushing features on the third rail, a synchronization member, and a fastening member, which interact with contact and blocking features to provide damping and prevent retraction, allowing for precise positioning and damping control during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a damping device is added to provide damping effect during rail movement, then the control precision and positioning accuracy are improved, but the device complexity increases
Solution Approach 1:
The patent integrates the damping device into the existing slide rail assembly structure by mounting it on the first rail and utilizing the third rail's movement to activate it. The damping device is combined with the synchronization member and fastening member mechanisms, allowing multiple functions (damping, synchronization, positioning) to be achieved through a unified structural arrangement rather than separate independent components.
Solution Approach 2:
The damping device is designed to be automatically activated by the movement of the third rail itself. The third rail includes pushing features that engage with the damping device during opening and retraction movements, eliminating the need for external control mechanisms. The system uses its own operational movements to trigger and control the damping effect.
2Measurement precision
If synchronization member and fastening member are added to control rail positions, then the positioning control is improved, but the device complexity increases
Solution Approach 1:
The fastening member is designed to automatically engage with the contact member when the third rail reaches a predetermined position during opening movement. The synchronization member similarly engages with the second rail at predetermined positions to synchronize their movements. These preliminary actions occur automatically based on position triggers, eliminating the need for continuous active control throughout the movement range.
Solution Approach 2:
The synchronization member acts as an intermediary between the second rail and third rail, transferring and coordinating their movements. The fastening member serves as an intermediary that connects the third rail to the contact member on the first rail to prevent retraction. These intermediary components enable complex positioning control through simple mechanical engagement and disengagement.
3Manufacturing precision
If two-way damping functionality is implemented, then the damping control precision is improved, but the manufacturing complexity increases
Solution Approach 1:
The damping device is designed with asymmetric pushing features on the third rail - a first pushing feature for opening direction and a second pushing feature for retraction direction. These features are positioned at different locations and configured to engage the damping device differently depending on movement direction, enabling two-way damping control through asymmetric mechanical design rather than complex active control systems.
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 two-way damping functionality, ensuring the third rail is aware of its position relative to the first rail, providing precise control and awareness of fully extended or retracted states, thus meeting market requirements for positioning and damping.
Implementation Method 1
the damping device is mounted to the first rail. Wherein, the third rail comprises a first pushing feature and a second pushing feature respectively located at two sides of the damping device. Wherein, during a process of the third rail being moved relative to the first rail along an opening direction, the third rail is configured to push the damping device through the first pushing feature to allow the damping device to provide damping effect.
Implementation Method 2
When the second rail and the third rail are moved to a first predetermined position, the second part contacts the contact member to deflect the synchronization member, in order to disengage the first part from the second rail.
Implementation Method 3
the slide rail assembly further comprises a first elastic member configured to apply an elastic force to the synchronization member.
Data Source
AI summary
A slide rail assembly includes a rail, a moving rail, and a damping device. When the moving rail is moved relative to the rail, the damping device is pushed by the moving rail to provide damping effect.