Slide Rail Assembly with Automatic Switch Member State Control
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Solution Overview
Problem
Existing slide rail assemblies face challenges in automatic switching of the switch member between states, leading to potential misalignment and failure to fully retract, especially in limited spaces, due to manual operation reliance.
Innovation Solution
The slide rail assembly incorporates a switch member that can automatically switch states through a driving structure and contact features on the third rail, allowing it to drive the second rail for retraction and extension, ensuring proper alignment and retraction without manual intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the switching member is operated manually to switch between states, then the user can control the rail extension and retraction, but the rails cannot be fully retracted if the switching member is not switched back properly
Solution Approach 1:
The third rail is designed to automatically drive the switching member to switch from the second state back to the first state through a front contact feature during its movement. This self-service mechanism ensures the switching member returns to the correct position without requiring manual intervention, eliminating the reliability issue of incomplete retraction while maintaining ease of operation.
2Volume of moving object
If the third rail is arranged with a driving structure to drive the second rail for retraction, then the total length is reduced for narrow space utilization, but the switch member may not be switched back properly without manual operation
Solution Approach 1:
The patent merges the retraction function of the third rail with the switching function of the switch member by incorporating a front contact feature on the third rail. As the third rail moves during retraction, it automatically actuates the switching member through this contact feature, combining two functions into one coordinated action and achieving full automation without compromising the volume reduction benefit.
3Adaptability or versatility
If the third rail drives the second rail to move along the retracting direction, then the slide rail assembly fits in narrow spaces, but manual switching may lead to misalignment and failure to fully retract
Solution Approach 1:
The front contact feature on the third rail acts as a feedback mechanism that automatically detects and corrects the position of the switching member during retraction. As the third rail moves, the contact feature ensures the switching member is properly actuated, providing positional feedback that prevents misalignment and ensures complete retraction, thereby maintaining manufacturing precision while enabling narrow space utilization.
Data Source
AI summary
A slide rail assembly includes a first rail, a second rail, a third rail and a switch member. The second rail is movably mounted between the first rail and the third rail. The switch member is configured to be switched between a first state and a second state. When the switch member is in the second state, the second rail is configured to be driven by the third rail to move to a predetermined position along a retracting direction. When the third rail is moved relative to the second rail at the predetermined position along an extending direction, the switch member is configured to be switched from the second state to the first state.