Slide Rail Positioning Mechanism for Reliable Pull-Out Alignment
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Solution Overview
Problem
Existing slide rail assemblies fail to ensure positive positioning of the inner slide rail relative to the outer slide rail when pulled out, especially when the movement is rushed, leading to misalignment.
Innovation Solution
A slide rail displacement positioning mechanism featuring a stopper member with elastically restorable springy arms and a positioning member with protruded portions that create a positioning gap, allowing for precise alignment and easy release under external force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shrapnel with a groove is provided at the outer slide rail for positive positioning, then the inner slide rail can be positioned in the groove, but when the inner slide rail is pulled out in a rush, it moves over the groove and fails to be positively positioned
Solution Approach 1:
The patent applies the dynamics principle by making the stopper member dynamically responsive to pulling speed. The elastically restorable springy arms allow the stopper to adapt its positioning behavior based on the velocity of the inner slide rail extraction. At normal speeds, the springy arms guide the positioning portions into the positioning gaps for positive positioning. At high speeds, the elastic deformation absorbs the冲击, allowing the system to transition from rigid positioning to dynamic absorption, preventing failure to position.
Solution Approach 2:
The patent changes the physical state and mechanical properties of the stopper member through parameter changes. The springy arms transition between elastic deformation states based on the pulling force applied. This parameter change allows the positioning mechanism to accommodate varying extraction speeds - at low speeds the arms remain relatively rigid for precise positioning, while at high speeds they deform elastically to absorb the冲击 and still achieve positioning.
2Measurement precision
If a rigid stopper member is used for positive positioning, then positioning accuracy is improved, but the mechanism becomes complex and harder to operate smoothly
Solution Approach 1:
The patent merges multiple functions into the stopper member: positioning guidance, elastic energy storage, and冲击 absorption are all integrated into a single component with springy arms. This consolidation achieves precise positioning accuracy while avoiding the complexity of separate rigid positioning mechanisms, shock absorbers, and energy storage devices. The unified structure simplifies the overall mechanism while maintaining high positioning precision.
Solution Approach 2:
The springy arms of the stopper member provide self-service by automatically absorbing excess kinetic energy during rapid extraction and self-restoring to their original position. This eliminates the need for external complex control systems or additional components to manage the dynamics of rapid slide rail extraction, achieving both positioning accuracy and operational simplicity through the self-regulating elastic properties of the integrated structure.
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
Ensures positive positioning of the inner slide rail relative to the outer slide rail through elastic restoration, facilitating accurate alignment and easy disengagement for smooth operation.
Implementation Method 1
two elastically restorable springy arms bilaterally connected between the front mounting end portion and the rear abutment end portion
Data Source
AI summary
A slide rail displacement positioning mechanism includes a slide rail assembly consisting of an inner slide rail and an outer slide rail, a stopper member affixed to the inner slide rail and providing a positioning gap between a frame body and an abutment component thereof, and a positioning member affixed to the outer slide rail and adapted for elastically biasing the abutment component upon a relative movement between the stopper member and the positioning member subject to the operation of the slide rail assembly, and thus, the positioning member can be positively stopped by the frame body to achieve relative positioning between the outer slide rail and inner slide rail of the slide rail assembly.