Slide Rail Assembly with Detachable Third Rail for Heavy-Load Mounting

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Solution Overview

Problem

Existing slide rail assemblies face challenges in mounting heavy objects due to insufficient strength, leading to deformation or damage, and previous mounting methods are either inconvenient in limited spaces or require excessive space, lacking versatility.

Innovation Solution

A slide rail assembly with a movable second rail, a detachably connected third rail, and a sliding auxiliary device, allowing for synchronous movement and flexible mounting options by communicating apertures and holes, enabling both synchronous and independent movement of rails for efficient object mounting in various spaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If the third rail is used to carry heavy objects, then the carrying capacity is increased, but the third rail deforms or damages due to insufficient strength

Engineering Contradiction:
Improvecarrying capacityVSAvoidthird rail strength
Core Design Contradiction:
Weight of moving objectVSStrength

Solution Approach 1:

The slide rail assembly is divided into multiple rails (first rail, second rail, third rail) that can move synchronously or independently. The third rail can be detached from the second rail when heavy objects need to be mounted, allowing the third rail to be reinforced or replaced without affecting the entire assembly structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent makes the connection between the second rail and third rail detachable rather than fixed. This dynamic configuration allows the system to adapt to different loading conditions - the third rail can be attached for normal use and detached or replaced when heavy loads are needed, solving the strength insufficiency problem.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the inner rail is pulled out and detached for mounting, then the chassis can be mounted without lifting, but the mounting method requires a larger space

Engineering Contradiction:
Improvemounting without liftingVSAvoidmounting space
Core Design Contradiction:
Ease of operationVSArea of stationary object

Solution Approach 1:

The assembly is segmented into detachable rails, allowing the third rail to be separated from the second rail for independent mounting operations. This segmentation enables mounting without lifting the chassis while maintaining a compact footprint.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The third rail is extracted from the second rail for separate mounting. This extraction allows the mounting process to be performed in a more compact space compared to methods requiring complete disassembly or lifting operations.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of operation

If the slide rail assembly is completely pulled out for mounting, then the chassis can be mounted easily, but the process becomes complex and time-consuming

Engineering Contradiction:
Improvemounting easeVSAvoidmounting time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

Instead of completely disassembling the slide rail assembly, only the third rail is detached from the second rail for mounting operations. This partial segmentation maintains the assembled structure while enabling easy mounting, significantly reducing the time required compared to complete disassembly.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The third rail is pre-configured with mounting holes and can be detached and reattached quickly. This preliminary preparation of the detachable connection allows for rapid mounting and dismounting operations without requiring complete assembly disassembly.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3307037B1Slide rail assembly
Publication Date: 2019.08.28 KING SLIDE WORKS CO LTD
  • EP3307037B1 patent drawingFigure 1
  • EP3307037B1 patent drawingFigure 2~5
  • EP3307037B1 patent drawingFigure 6A~7

AI summary

A slide rail assembly (22) includes a first rail (28), a second rail (30), a third rail (32) and a sliding auxiliary device (74). The second rail (30) is movable relative to the first rail (28). The second rail (30) has a first aperture (59). The third rail (32) is movable relative to the second rail (30). The third rail (32) has a plurality of mounting holes (88a, 88b, 88c). The sliding auxiliary device (74) is arranged between the second rail (30) and the third rail (32). The sliding auxiliary device (74) has a second aperture (79). Wherein, when the third rail (32) is located at an extension position relative to the second rail (30), the first aperture (59), the second aperture (79) and one of the mounting holes (88a, 88b, 88c) of the third rail (32) are communicated with each other.