Refrigerator Crisper Drawer Roller Assembly for Quiet Sliding
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Solution Overview
Problem
Existing roller systems for supporting crisper bins in refrigerators suffer from noise and friction due to hard surface contact, and ball bearing glides are expensive and prone to lubrication issues in cold environments.
Innovation Solution
A slide assembly using six lubricated rollers, with four at the front and rear for vertical movement and two central rollers mounted 90 degrees underneath for horizontal movement, to prevent hard surface contact and reduce noise and friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If direct sliding supports are used for the drawer, then the structure is simple and functional, but multidirectional movement occurs resulting in noise and cumbersome operation
Solution Approach 1:
Rollers are introduced as intermediary elements between the drawer and guide tracks. These rollers convert direct sliding contact into rolling contact, mediating the interaction between the drawer and support structure to eliminate multidirectional movement and reduce noise while maintaining operational smoothness
2Device complexity
If roller systems with hard surface contact are used, then the structure is simple, but friction and noise occur during drawer movement
Solution Approach 1:
The contact surface material parameter is changed from hard surface to soft roller material. This parameter change reduces friction coefficients and dampens noise generation during drawer movement, transforming the harmful friction and noise into smooth, quiet operation
3Ease of operation
If ball bearing glides are used to improve strength and quality perception, then the drawer operation is smooth, but the cost increases and lubrication issues occur in cold environment
Solution Approach 1:
Simple rollers without complex ball bearing assemblies are used instead of expensive ball bearing glides. These rollers are designed to be maintenance-free for their service life, eliminating lubrication requirements in the cold environment while providing sufficient smooth operation at lower cost
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 solution provides a smooth, quiet, and robust-feeling operation for the crisper drawer, enhancing the sliding movement within the refrigerator compartment.
Implementation Method 1
lubricated rollers control both horizontal and vertical movement of the drawer... preventing any hard surfaces from rubbing together
Implementation Method 2
A slide assembly using six lubricated rollers, with four at the front and rear for vertical movement and two central rollers mounted 90 degrees underneath for horizontal movement
Data Source
AI summary
A slide assembly for a drawer inside a refrigerator employs both side and central rollers which control both horizontal and vertical movement of the drawer through a first set of rollers employed at front and rear portions at each side of the drawer to control vertical movement within side tracks while the drawer is moved between an extended position and a retracted position. A second set of rollers is mounted along axes which are arranged 90 degrees relative to the first set of rollers and underneath the drawer. This second set of rollers control side-by-side movement of the drawer as it is opened and closed. In one embodiment, the second set of rollers is mounted in a refrigerated compartment and travel within a track or guideway mounted on the bottom of the drawer.