Pull-Out Refrigerator Container Bearing Layout for Low-Friction Movement
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Solution Overview
Problem
Existing refrigeration appliances require significant effort to pull out or push in refrigerated goods containers due to high sliding friction, which can lead to tipping and increased operational difficulty.
Innovation Solution
The use of rollers in the rear area and sliding bearing points in the central and front areas of the refrigerated goods container, supported by counter-bearing surfaces, reduces the total force required for pull-out or push-in by combining rolling and sliding friction, with the rollers and sliding bearing points made of thermoplastic materials like polyoxymethylene (POM) to minimize friction coefficients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional sliding friction is used for the refrigerated goods container, then the structure is simple, but the force required to pull out or push in the container is high
Solution Approach 1:
The bearing means is segmented into two distinct types of bearing elements: rollers and sliding bearing points. This segmentation allows each element to perform its specific function optimally - rollers provide rolling friction for low-resistance movement while sliding bearing points provide stability and guidance, collectively reducing the total force required for container movement.
Solution Approach 2:
Rollers with curved rolling surfaces are introduced into the bearing means. The curved surface of the rollers enables rolling motion instead of sliding motion, significantly reducing frictional resistance and the force required to move the refrigerated goods container in and out.
2Ease of operation
If high sliding friction is used, then the container remains stable, but operational difficulty increases
Solution Approach 1:
The curved rolling surfaces of the rollers convert sliding friction into rolling friction, dramatically reducing the force required for operation. This allows users to easily pull out or push in the refrigerated goods container without excessive effort.
Solution Approach 2:
By dividing the bearing means into rollers and sliding bearing points, the system achieves both low friction for easy operation and sufficient stability for safe container handling during movement.
3Ease of operation
If rollers are added to reduce friction, then ease of operation improves, but device complexity increases
Solution Approach 1:
The bearing means is divided into rollers and sliding bearing points, with each element having a specific function. This segmentation allows the system to achieve low-friction operation through rollers while maintaining structural simplicity and ease of manufacturing.
Solution Approach 2:
Different bearing elements are applied at different locations: rollers are positioned at specific bearing locations to provide rolling friction, while sliding bearing points are distributed to provide stability and guidance. This local differentiation optimizes performance while keeping the overall structure simple.
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
This configuration allows for easy and efficient movement of refrigerated goods containers with reduced effort, preventing tipping and improving operational ease while maintaining stability and reducing frictional resistance.
Implementation Method 1
the bearing means on opposite side walls of the refrigerated goods container has a roller in a rear area of the refrigerated goods container and at least one sliding bearing point in a central and/or front area of the refrigerated goods container
Implementation Method 2
combining rolling and sliding friction, with the rollers and sliding bearing points made of thermoplastic materials like polyoxymethylene (POM) to minimize friction coefficients
Data Source
AI summary
The invention relates to a refrigerator, in particular a domestic refrigerator, having an inner container (2) with a front opening (4), which can be closed by a door leaf, for the removal and/or insertion of refrigeration articles, and a pull-out refrigeration article container (3), as well as mounting means (5) for mounting the refrigeration article container (3) in the inner container (2) in a pull-out manner, the mounting means (5) having on opposite sides of the refrigeration article container (3) in each case, in a rear region of the refrigeration article container (3), a roller (8a, 8b) and, in a central and/or front region of the refrigeration article container (3), at least one slide bearing point (6a, 6b, 6c), the roller (8a, 8b) and the at least one slide bearing point (6a, 6b, 6c) being supported on at least one counter bearing face (14) of the inner container (2).