Slide Rail Locking Assembly for Vibration-Resistant Drawer Movement
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Solution Overview
Problem
Furniture assemblies, such as drawer systems, are prone to unintentional opening or closing due to external forces or vibrations, posing safety concerns as the movable member can shift relative to the fixed member.
Innovation Solution
A slide rail assembly comprising a first rail, a second rail, an auxiliary member, and a driving device with an elastic member, where the auxiliary member can be operated between states to allow or prevent the second rail from moving a predetermined distance relative to the first rail, using an abutting feature and elastic force to control movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the movable member is allowed to move freely relative to the fixed member, then the ease of operation is improved, but the stability and safety are worsened due to unintentional movement from external forces or vibrations
Solution Approach 1:
The slide rail assembly employs a dynamic locking mechanism where the auxiliary member can switch between a first state (allowing movement) and a second state (preventing movement). This dynamic state change enables the system to adapt between operational mode and safety lock mode, resolving the contradiction between ease of operation and safety against unintentional movement.
Solution Approach 2:
The system changes the positional parameter of the auxiliary member between two discrete states. In the first state, the auxiliary member allows the second rail to move freely; in the second state, it blocks movement by engaging with the abutting feature. This parameter change enables controlled transition between operational and locked states.
2Reliability
If the auxiliary member blocks movement to prevent unintentional opening, then the safety is improved, but the ease of operation is worsened due to additional control steps required
Solution Approach 1:
The driving device with the elastic member provides automatic actuation of the auxiliary member. When the second rail is pulled to open the drawer, the elastic member automatically drives the auxiliary member from the second state to the first state, enabling movement without requiring manual intervention to disengage the lock. This self-service mechanism maintains safety while preserving ease of operation.
Solution Approach 2:
The elastic member accumulates elastic force in advance during the retracted position, preparing the driving device to automatically actuate the auxiliary member when needed. This preliminary energy storage enables the system to transition from locked to operational state automatically upon application of opening force.
3Reliability
If the second rail is completely fixed to the first rail, then the stability is improved, but the functionality is worsened as the drawer cannot move
Solution Approach 1:
The system provides dynamic control over the connection between the first and second rails through the auxiliary member. Rather than being completely fixed or completely free, the system can transition between these two states, maintaining stability when needed while enabling movement when required for normal operation.
Solution Approach 2:
The abutting feature is pre-configured on the first rail at a specific position. When the auxiliary member switches to the second state, it automatically engages with this pre-positioned abutting feature to prevent movement beyond the predetermined distance, ensuring stability without requiring complex real-time control mechanisms.
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
Effectively prevents unintentional movement of the second rail relative to the first rail, ensuring the furniture assembly remains secure by allowing controlled movement when desired and locking it in place during unintended forces or vibrations.
Implementation Method 1
the elastic member is configured to provide an elastic force to the second rail for driving the second rail to move relative to the first rail along a second direction
Data Source
AI summary
A slide rail assembly includes a first rail, a second rail and an auxiliary member. The second rail is movable relative to the first rail. The auxiliary member is configured to be operated between a first state and a second state relative to one of the first rail and the second rail. When the auxiliary member is in the first state, the second rail is able to be moved a predetermined distance from a position relative to the first rail along a direction. When the auxiliary member is in the second state, the auxiliary member is configured to prevent the second rail from being moved the predetermined distance from the position relative to the first rail along the direction.