Drawer Slide Rail Synchronization Using Rack-Pinion Gear Mechanism
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Solution Overview
Problem
Existing drawer slide rails operate independently, leading to issues such as distortion, increased force requirement, and noise due to differences in movement amounts between the rails.
Innovation Solution
A pull-out system with synchronized slide rails, comprising a fixed rail, intermediate rail, moving rail, and a synchronization part with a rack gear, pinion gear, and tension unit to ensure synchronized movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If slide rails operate independently without synchronization, then device complexity is reduced, but movement uniformity deteriorates causing distortion and noise
Solution Approach 1:
A synchronization bar is introduced as an intermediary component that connects the two slide rails. The bar includes a first engagement portion that engages with the first slide rail and a second engagement portion that engages with the second slide rail, thereby synchronizing their movements and preventing distortion and noise while maintaining manageable system complexity
Solution Approach 2:
The synchronization bar merges the independent operations of the two slide rails into a coordinated system. By physically connecting the rails through the bar, their movements are combined and synchronized, ensuring uniform operation without requiring overly complex control mechanisms
2Stability of the object's composition
If synchronization parts are added to coordinate slide rails, then movement uniformity is improved, but device complexity increases
Solution Approach 1:
The synchronization bar is segmented into distinct functional portions: a first engagement portion for connecting to the first slide rail, a second engagement portion for connecting to the second slide rail, and a connecting portion linking these engagement portions. This segmentation allows each part to perform its specific function independently, simplifying the overall assembly and installation process while maintaining movement uniformity
Solution Approach 2:
Different portions of the synchronization bar have specialized local qualities tailored to their specific functions. The engagement portions are designed with specific geometries to mate with the slide rails, while the connecting portion provides structural linkage. This localized optimization enables effective synchronization without requiring complex design throughout the entire 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
Improves assembly convenience, reduces manufacturing costs, and ensures smooth operation by synchronizing the movement of slide rails, minimizing noise and force requirements.
Implementation Method 1
a rack gear installed on each fixed rail, a pinion gear rotatably installed on one side surface of each intermediate rail and engaged with the rack gear
Implementation Method 2
a tension unit having an incised portion and configured to vertically elastically move a predetermined distance
Data Source
AI summary
An embodiment of the present invention provides a pull-out system comprising: at least two slide rails each having a fixed rail, an intermediate rail slidably disposed on the fixed rail, and a moving rail slidably disposed on the intermediate rail; and a synchronization means for synchronizing movements of the respective slide rails with each other.