Slide Rail Assembly with Single-Operation Unlocking Mechanism

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Solution Overview

Problem

Existing slide rail systems require simultaneous operation of two actuating members to unlock, which is inconvenient for different market requirements.

Innovation Solution

A slide rail assembly with a locking member and two operating members, where operating one member switches the locking member from a locking to an unlocking state, allowing the second rail to be moved relative to the first rail.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a latch assembly with two actuating members is used to secure the first rail at the retracted position, then the locking reliability is improved, but the ease of operation deteriorates because simultaneous operation of two actuating members is required to unlock

Engineering Contradiction:
Improvelocking reliabilityVSAvoidease of operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The latch assembly is segmented into two independent actuating members (first and second actuating members) that can be operated separately. Each actuating member controls a corresponding unlocking member, allowing the locking mechanism to be released by operating either one of the two members, thus maintaining reliability while improving ease of operation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The latch assembly incorporates resilient unlocking members that can dynamically switch between locked and unlocked states. The resilient nature of the unlocking members allows them to automatically return to the locked position after being actuated, providing both reliability through automatic resetting and ease of operation through simple actuation movements.

Inventive Principle:
Principle #15Dynamics

2Reliability

If a resilient catch mechanism is used to prevent the slide assembly from extending, then the locking reliability is improved, but the device complexity increases due to the additional components required

Engineering Contradiction:
Improvelocking reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The resilient catch mechanism is designed to automatically engage and disengage without requiring external intervention. The resilient unlocking members automatically return to their locked position after being actuated, and the latch assembly self-secures when the slide assembly reaches the retracted position, reducing the need for additional control components and simplifying the overall device.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP4537705B1Slide rail assembly
Publication Date: 2026.02.18 KING SLIDE WORKS CO LTD
  • EP4537705B1 patent drawingFigure 1
  • EP4537705B1 patent drawingFigure 2
  • EP4537705B1 patent drawingFigure 3

AI summary

A slide rail assembly (20) includes a first rail (22), a second rail (24), a blocking feature (28), two operating members (31, 32) and a locking member (30). The blocking feature (28) is arranged on the first rail (22). The two operating members (31, 32) and the locking member (30) are movably mounted on the second rail (24) . When the second rail (24) is located at a predetermined position relative to the first rail (22), the locking member (30) is blocked by the blocking feature (28) to prevent the second rail (24) from being moved away from the predetermined position. When one of the two operating members (31, 32) is operated, the locking member (30) is configured to be driven to move to allow the second rail (24) to be moved away from the predetermined position.