Pivoting Refrigerator Door Basket With Adjustable Mounting

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Solution Overview

Problem

The existing door basket for refrigerators is costly to manufacture due to wire knitting, hinders pivoting with stored foods, difficult to assemble, and lacks height adjustment flexibility.

Innovation Solution

A door basket design featuring a fixed casing portion and a pivotable accommodation portion formed by injection molding, with fastening projections and grooves for easy installation and height adjustment, and catching projections and stoppers for unhindered pivoting.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the door basket is formed by knitting wires, then the accommodation space can be created, but the manufacturing cost increases

Engineering Contradiction:
Improvemanufacturing costVSAvoidstructural integrity
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent replaces expensive wire-knitted door baskets with inexpensive injection-molded plastic baskets. The injection molding process creates a durable yet low-cost alternative that eliminates the high manufacturing costs associated with wire knitting while maintaining sufficient structural integrity for food storage.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent changes the material parameter from wire mesh to solid plastic through injection molding. This parameter change fundamentally alters the manufacturing process and cost structure, transitioning from a high-cost wire knitting process to a low-cost injection molding process while maintaining the basket's functional requirements.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If the door basket consists of multiple wires, then the accommodation space is formed, but food projects through gaps and hinders pivoting

Engineering Contradiction:
Improvepivoting smoothnessVSAvoidbasket structure
Core Design Contradiction:
Ease of operationVSShape

Solution Approach 1:

The patent replaces the wire mesh structure with a solid plastic construction formed by injection molding. This eliminates the gaps between wires that cause food to project outward and hinder pivoting, while the solid plastic structure maintains the necessary accommodation space for food storage.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent uses solid plastic material formed through injection molding to create a unified basket structure. This composite approach combines the structural integrity needed for pivoting with the accommodation space required for food storage, eliminating the problems associated with wire mesh gaps.

Inventive Principle:
Principle #40Composite materials

3Ease of manufacture

If the door basket is installed between holders on projections, then the basket is secured, but assembly becomes difficult in narrow space

Engineering Contradiction:
Improveassembly easeVSAvoidinstallation structure
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent merges the basket structure with the door liner by directly fixing the injection-molded basket to the door liner surface. This eliminates the intermediate holders and projections required in traditional designs, simplifying both the installation structure and the assembly process while maintaining secure attachment.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The injection-molded basket serves multiple functions: it provides food accommodation space, maintains structural integrity, and incorporates attachment features for direct fixation to the door liner. This multi-functionality eliminates the need for separate holders and projections, simplifying the overall installation structure.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Adaptability or versatility

If the door basket is fixed to projections on both sides, then the basket is secured, but height adjustment becomes difficult

Engineering Contradiction:
Improveheight adjustabilityVSAvoidfixed structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent transitions from a fixed attachment structure to a dynamic, adjustable design. The injection-molded basket incorporates features that allow it to be fixed at multiple height positions on the door liner, enabling height adjustment while maintaining secure attachment. This dynamic capability provides adaptability for different storage needs.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent segments the attachment mechanism into multiple discrete fixation points or adjustable positions on the door liner. This segmentation allows the basket to be secured at different heights while maintaining a simple overall structure, combining the benefits of secure fixation with height adjustability.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS7552983B2Door basket refrigerator
Publication Date: 2009.06.30 LG ELECTRONICS INC
  • US7552983B2 patent drawing
  • US7552983B2 patent drawing
  • US7552983B2 patent drawing

AI summary

A door basket for a refrigerator is provided that includes a fixed casing portion and a pivotable accommodation portion. The fixed casing portion includes a predetermined seating space opened upward and forward and is formed to extend from side to side and be fixed horizontally to a door liner. The pivotable accommodation portion includes a predetermined accommodation space opened upward is pivotably installed to the fixed casing portion, and is formed to extend from side to side. A lower surface of the pivotable accommodation portion is supported on a bottom surface of the fixed casing portion in a state in which food is accommodated in the accommodation space. Both the fixing casing portion and the pivotable accommodation portion may be formed by injection molding. With such structure, the door basket for a refrigerator may be manufactured at reduced cost, prevent accommodated foods from hindering pivoting thereof, be easily manufactured and installed, and be freely adjusted in installation height.