Slide Rail Release Assembly to Prevent Accidental Disengagement

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Solution Overview

Problem

Conventional slide rail assemblies are unreliable due to accidental release of the releasing member, which can lead to unintended disengagement of the rail components.

Innovation Solution

A slide rail assembly design featuring a first rail with a protrusion, a second rail, a releasing member with push buttons and angular driving edges, and pivotable latch members that engage with the releasing member to securely disengage the protrusion, ensuring controlled release.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a releasing member is provided to release the retaining member, then the rail assembly can be released, but the releasing member may be moved by accident leading to unwanted release

Engineering Contradiction:
Improveease of releaseVSAvoidreliability of release mechanism
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The releasing member is divided into two separate components: a push button and a latch member. The push button can be easily pressed to initiate release, while the latch member remains engaged unless the push button is deliberately actuated. This segmentation allows the easy-to-press button to trigger a more secure release mechanism, resolving the contradiction between ease of operation and reliability.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the releasing member is made easily movable for simple operation, then operation is easier, but accidental movement occurs causing unwanted release

Engineering Contradiction:
Improvesimplicity of activationVSAvoidcomplexity of release control
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The latch member acts as an intermediary between the push button and the retaining member. When the push button is pressed, it moves the latch member, which then disengages the retaining member from the protrusion. This intermediary mechanism allows simple button pressing while preventing accidental release, as the latch member provides an additional control layer.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If a single releasing member is used, then the structure is simpler, but reliable controlled release cannot be achieved

Engineering Contradiction:
Improvenumber of release componentsVSAvoidreliability of controlled release
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The release mechanism is segmented into distinct functional components: a push button for initiation, a latch member for controlled disengagement, and a retaining member for secure holding. This segmentation increases component count but enables reliable controlled release by assigning specific functions to each component, preventing accidental release while maintaining operational simplicity.

Inventive Principle:
Principle #1Segmentation

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

The design provides a reliable mechanism for releasing the rail assembly, preventing accidental disengagement and allowing for controlled removal of the first rail from the second rail, enhancing user safety and operational reliability.

Implementation Method 1

The second rail includes a pair of resilient tabs detachably and respectively engaging with the buttons and the releasing member

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

The first and second latch members are pivotably attached to the second rail. The buttons are actuated to release the releasing member from the resilient tabs and move the releasing member to drive the first latch member and the second latch member to disengage the protrusion of the first rail

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentUS7744175B2Slide rail assembly
Publication Date: 2010.06.29 FULIAN PRESION ELECTRONICS (TIANJIN) CO LTD
  • US7744175B2 patent drawing
  • US7744175B2 patent drawing
  • US7744175B2 patent drawing

AI summary

An exemplary slide rail assembly includes a first rail with a protrusion, a second rail, a releasing member, a pair of push buttons, a first latch member, and a second latch member. The releasing member is slidably attached to the second rail and includes a pair of openings for receiving the buttons, and two angular driving edges. The second rail includes a pair of resilient tabs detachably and respectively engaging with the buttons and the releasing member. The first and second latch members are pivotably attached to the second rail. The first latch member includes a post extending therefrom to be selectively driven by the driving edges of the releasing member. The buttons are actuated to release the releasing member from the resilient tabs and move the releasing member to drive the first latch member and the second latch member to disengage the protrusion of the first rail.