Refrigerator Drawer Slide Synchronizer for Anti-Racking Alignment
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Solution Overview
Problem
Conventional pull-out drawers in refrigerators often misalign due to off-center pulling forces, leading to 'racking' and improper sealing, and existing solutions like rack and pinion systems reduce usable space and can be noisy.
Innovation Solution
A drawer slide synchronizer system using two cables and bearings to synchronize the motion of drawer slides, ensuring they move in sync without the need for a rack and pinion system, thus minimizing racking while occupying minimal space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a rack and pinion system is used to synchronize drawer slides, then drawer misalignment is reduced, but usable compartment volume is reduced and noise increases
Solution Approach 1:
The patent extracts the synchronization function from the drawer slide mechanism itself and implements it through a separate cable-based system connected to the cabinet structure. This separates the synchronization function from the space-consuming rack and pinion system, allowing the drawer to move freely without occupying additional compartment volume while still achieving alignment control through cables routed along the cabinet perimeter.
Solution Approach 2:
The patent introduces cables as intermediary elements that transmit synchronization forces between the drawer slides and the cabinet structure. These cables act as flexible mediators that can transmit force over longer distances without requiring the rigid, space-intensive mechanical connection of a rack and pinion system, thereby reducing noise and preserving compartment volume while maintaining alignment.
2Manufacturing precision
If a rack and pinion system is used to synchronize drawer slides, then drawer misalignment is reduced, but noise is generated
Solution Approach 1:
The patent replaces the rigid mechanical engagement of rack and pinion teeth with a flexible cable-based tension system. This substitution eliminates the metallic contact and gear meshing that generate noise, while still achieving synchronization through cable tension distributed along the drawer slide mechanism, thereby reducing noise without sacrificing alignment precision.
3Volume of stationary object
If conventional drawer slides are used without synchronization, then space is maximized, but drawer misalignment and racking occur
Solution Approach 1:
The patent implements a self-synchronizing mechanism where the cable system automatically adjusts and equalizes the position of both drawer slides through tension distribution. The system uses the drawer's own movement and the cable's elastic properties to self-correct alignment without requiring external control mechanisms, maintaining full compartment volume while preventing misalignment through passive mechanical feedback.
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
The system effectively reduces drawer misalignment and noise, maintaining proper sealing and maximizing usable space by synchronizing the motion of drawer slides without the need for a rack and pinion system.
Implementation Method 1
A drawer slide synchronizer includes a first cable and a second cable. A first bearing is mounted to a first one of a pair of drawer slides, and a second bearing is mounted to a second one of the pair of drawer slides. The first and second cables contact the first bearing, and the first and second cables also contact the second bearing.
Data Source
AI summary
A refrigerator appliance includes a drawer slide synchronizer with a first cable and a second cable. A first bearing is mounted to a first one of a pair of drawer slides, and a second bearing is mounted to a second one of the pair of drawer slides. The first and second cables contact the first bearing, and the first and second cables also contact the second bearing.