Refrigerator

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Solution Overview

Problem

Conventional refrigerators with moving baskets face challenges in supporting the weight of the baskets without damaging the door structure or reducing storage space, especially when the rail for guiding movement is visibly exposed and may compromise the door's appearance and functionality.

Innovation Solution

The implementation of a moving basket system with an embedded rail in the door dike, where the rail is fully integrated and covered by a rail cover bracket, allowing the basket to move vertically without protruding, and using a supporter with rollers and a lever mechanism for adjustable positioning, supported by a spring and interlocking parts for secure operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a rail is provided to guide the movement of the basket, then the basket can move vertically along the door, but the rail becomes visibly exposed and compromises the door's appearance

Engineering Contradiction:
Improvebasket movementVSAvoiddoor appearance
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

A rail cover bracket is introduced as an intermediary component that covers the exposed rail. The rail cover bracket is disposed at the door and covers the rail, allowing the basket to move along the rail while the rail remains hidden, thus maintaining the door's appearance while enabling basket movement.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Shape

If the rail is embedded in the door structure, then the appearance is improved, but the installation complexity and potential damage to door structure increase

Engineering Contradiction:
Improvedoor appearanceVSAvoidinstallation complexity
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The system is divided into separate modular components: the rail, the rail cover bracket, and the basket assembly. The rail is disposed independently within the door structure, the rail cover bracket is a separate component that covers the rail, and the basket assembly moves along the rail. This segmentation allows for easier installation and maintenance while maintaining aesthetic appearance.

Inventive Principle:
Principle #1Segmentation

3Strength

If the moving frame supports the basket weight, then load bearing is improved, but the door structure may be damaged by the concentrated load

Engineering Contradiction:
Improveload bearing capacityVSAvoiddoor structure damage
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The rail acts as an intermediary load-bearing element between the basket and the door structure. The moving frame is coupled to the rail through a supporter, allowing the basket weight to be transferred to the rail, which is then distributed to the door structure through the rail's mounting points. This distributes the concentrated load over a larger area, preventing damage to the door structure while maintaining load-bearing capacity.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 design enhances the usability of the moving basket by maintaining the door's appearance and functionality while providing efficient vertical movement and load support, minimizing damage to the door structure and optimizing storage space.

Implementation Method 1

The outer parts of the rollers include an elastic material, and rollers are configured to elastically deform based on the rollers moving along the roller guide, and elastically restore at the roller openings to be partially inserted into the roller openings.

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

A spring may be disposed between the operation unit and the lever, the spring being configured to return the operation unit and the lever to an original position.

Methodology Applied
Scientific EffectSpring restoration: Spring

Data Source

PatentUS11231222B2Refrigerator
Publication Date: 2022.01.25 LG ELECTRONICS INC
  • US11231222B2 patent drawing
  • US11231222B2 patent drawing
  • US11231222B2 patent drawing

AI summary

A refrigerator may include a cabinet disposed at a storage compartment, a door configured to open and close the storage compartment, a basket configured to accommodate goods, a moving frame coupled to a lower part of the basket, the moving frame being configured to support the basket, and to move vertically at the door in an integrated manner with the basket, a rail disposed at the door, and a supporter disposed between the moving frame and the rail to support the moving frame with respect to the rail.