Slide Rail Locking Mechanism with Self-Holding Unlocking State

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Solution Overview

Problem

Existing slide rail mechanisms require continuous user force to maintain the locking member in an unlocking state, making operation inconvenient.

Innovation Solution

A slide rail mechanism that allows the locking member to be temporarily held in an unlocking state through engagement with a predetermined component, using an elastic member to accumulate force and disengage the locking member when moved, eliminating the need for continuous user input.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the locking member is held in the unlocking state by continuous user force, then the movable rail can be moved along the predetermined direction, but the operation becomes inconvenient and requires continuous user input

Engineering Contradiction:
Improveconvenience of operationVSAvoidduration of user force application
Core Design Contradiction:
Ease of operationVSDuration of action of moving object

Solution Approach 1:

The locking member is configured to automatically engage with the blocking feature when the movable rail is at the retracted position, and automatically disengage when the movable rail moves along the predetermined direction. This self-servicing mechanism eliminates the need for continuous user force application to maintain the unlocking state, thereby improving ease of operation without requiring prolonged user input.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The locking member is designed to preemptively engage with the blocking feature before the movable rail can move away from the retracted position. This preliminary locking action prevents unintended movement, and the automatic disengagement mechanism ensures that once movement begins, the locking member releases without requiring continuous user force, thus resolving the contradiction between operational convenience and duration of force application.

Inventive Principle:
Principle #9Preliminary anti-action

2Reliability

If the locking member automatically returns to the locking state when the movable rail is stationary, then the movable rail is securely locked at the retracted position, but the user must continually apply force to the operating member to hold the locking member in the unlocking state

Engineering Contradiction:
Improvelocking reliabilityVSAvoidease of maintaining unlocked state
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The locking member automatically engages with the blocking feature when the movable rail is stationary at the retracted position, providing reliable locking without user intervention. When the movable rail moves along the predetermined direction, the locking member automatically disengages from the blocking feature, allowing the movable rail to move freely without requiring continuous user force to maintain the unlocked state. This self-servicing mechanism simultaneously achieves reliable automatic locking and ease of operation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The locking member transitions between locked and unlocked states dynamically based on the position and movement of the movable rail. When the movable rail is stationary, the locking member engages with the blocking feature for reliable locking. When the movable rail moves, the locking member automatically disengages, creating a dynamic system that adapts to the operational state without requiring continuous user input, thus resolving the contradiction between locking reliability and operational ease.

Inventive Principle:
Principle #15Dynamics

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

Facilitates convenient operation by allowing the locking member to be held in an unlocking state without continuous user force, enhancing usability and ease of maintenance.

Implementation Method 1

the elastic member is configured to accumulate an elastic force. During a process of the movable rail being moved away from the predetermined position along the predetermined direction, the first rail is configured to disengage the locking member from the predetermined component, such that the locking member is moved to switch from the unlocking state to the locking state in response to the elastic force released by the elastic member

Methodology Applied
Scientific EffectElastic force: Elasticity

Data Source

PatentUS20250290545A1Slide rail mechanism
Publication Date: 2025.09.18 KING SLIDE WORKS CO LTD
  • US20250290545A1 patent drawing
  • US20250290545A1 patent drawing
  • US20250290545A1 patent drawing

AI summary

A slide rail mechanism includes a first rail, a movable rail, a locking member and a predetermined component. The movable rail is movable relative to the first rail. When the locking member is in a locking state, the locking member is configured to be blocked by a blocking feature on the first rail. When the locking member is in an unlocking state, the locking member is not blocked by the blocking feature for allowing the movable rail to be moved away from a predetermined position along a predetermined direction relative to the first rail, and the locking member and the predetermined component are engaged with each other in order to hold the locking member in the unlocking state.