Slide Rail Assembly With Guided Synchronous Extension
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Solution Overview
Problem
Existing slide rail assemblies with simultaneously displaceable rails face limitations in load support and efficient displacement mechanisms, which hinder their performance under varying loads and operational conditions.
Innovation Solution
A slide rail assembly design featuring a first rail, a second rail with an opening, a third rail, a guiding base with specific width configurations, and contact members that allow simultaneous displacement of the second and third rails by leveraging guiding paths and contact widths to facilitate coordinated movement and secure retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If two slide rails are made simultaneously displaceable to provide better support, then load bearing capacity is improved, but device complexity increases
Solution Approach 1:
The patent implements a nested structure where the second slide rail is disposed within the first slide rail, and the third slide rail is disposed within the second slide rail. This nested arrangement allows multiple rails to occupy overlapping spatial regions, reducing overall structural footprint while maintaining the load-bearing advantages of multiple simultaneous rails. The guiding base and contact members are similarly nested within the rail structures, integrating multiple functions into compact configurations.
Solution Approach 2:
The patent divides the slide rail system into segmented components: first, second, and third rails; guiding base; first and second contact members. Each component performs specific functions and can be independently manufactured and assembled. The contact members are further segmented into contact portions with specific geometries, allowing modular replacement and maintenance while preserving the overall multi-rail load-bearing structure.
2Ease of operation
If contact members are designed with specific width configurations to enable coordinated movement, then displacement control is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies local quality by designing contact members with non-uniform width configurations. Specifically, the first contact member has a first width at its first contact portion and a second width at its second contact portion, where these widths are deliberately different. The guiding base features corresponding guiding portions with matching width variations. This local differentiation enables the contact member to transition between different operational states: initially engaging with one guiding portion for coordinated rail movement, then transitioning to engage with another guiding portion for independent rail displacement, all through precisely controlled local dimensional variations.
3Productivity
If guiding paths are designed with varying widths to control rail displacement sequences, then operational efficiency is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamics by designing the guiding path with variable width characteristics along its length. The guiding portions of the guiding base have different widths at different positions, creating a dynamic engagement sequence. As the contact member moves along the guiding path, the changing width profile automatically transitions the system from a state where both rails move together to a state where rails can move independently. This dynamic geometric variation encodes the displacement sequence directly into the guiding path geometry, eliminating the need for complex control mechanisms.
Data Source
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AI summary
A slide rail assembly includes first, second, and third rails (10, 12, 14) slidably connected together, a guiding base (18) on the first rail (10), a first contact member (20) on the second rail (12), and a second contact member (22) on the third rail (14). The first contact member (20) extends through an opening (38) of the second rail (12) and corresponds to the guiding base (18). When the third rail (14) is pulled out, the second contact member (22), which corresponds to the first contact member (20), abuts against the first contact member (20) such that the second rail (12) is displaced with the third rail (14). Once the first contact member (20) is guided by the guiding base (18) to another position and separates from the second contact member (22), the third rail (14) can be pulled out relative to the second rail (12).