Refrigerator Door Opening Mechanism for Hidden Low-Force Release

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Solution Overview

Problem

Conventional refrigerators have door opening mechanisms that protrude forward, affecting the aesthetic appearance and increasing costs, packaging, and transportation inefficiencies, while also requiring higher forces to open doors due to traditional handle-based designs.

Innovation Solution

A door opening device is integrated into the grip part of the refrigerator door, featuring a pivoting member with a pivoting shaft, press portion, and push unit that operates by sliding rearward to push the body, allowing for easy door opening with reduced force and maintaining a sleek, handle-free exterior.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If a traditional handle-based door opening mechanism is used, then the door can be opened, but the mechanism protrudes forward affecting aesthetic appearance and increasing costs

Engineering Contradiction:
Improveaesthetic appearanceVSAvoiddoor opening operation
Core Design Contradiction:
ShapeVSEase of operation

Solution Approach 1:

The door opening mechanism is extracted from the traditional handle configuration and relocated to the grip part area, allowing the mechanism to be integrated into the door structure without protruding handles, thus improving aesthetic appearance while maintaining operational functionality

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The door opening mechanism is merged with the grip part structure, combining the gripping function and door opening function into a single integrated component, eliminating the need for separate protruding handles and reducing overall structural complexity

Inventive Principle:
Principle #5Merging (Combining)

2Ease of manufacture

If a traditional handle-based door opening mechanism is used, then the door can be opened, but costs and packaging efficiency are reduced

Engineering Contradiction:
Improvemanufacturing costVSAvoiddoor opening mechanism
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The door opening mechanism is extracted from complex handle assemblies and simplified into a compact structure integrated into the grip part, reducing the number of components and simplifying manufacturing processes

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The grip part structure is designed to serve multiple functions: providing a gripping surface for door closure and housing the door opening mechanism, thereby reducing the need for separate components and lowering manufacturing costs

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

3Force

If a traditional handle-based door opening mechanism is used, then the door can be opened, but higher forces are required to open the door

Engineering Contradiction:
Improvedoor opening forceVSAvoiddoor opening operation
Core Design Contradiction:
ForceVSEase of operation

Solution Approach 1:

The door opening mechanism utilizes a pivoting member that rotates about a pivoting shaft, converting a small applied force at the press portion into a larger force at the push portion through rotational motion and leverage, thereby reducing the force required to open the door

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The force application is shifted from a linear push at the handle to a rotational action at the pivoting member, utilizing the rotational dimension to amplify the applied force and reduce the effort needed to open the door

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 enables easy door opening with minimal force, enhances the refrigerator's appearance by hiding the door opening mechanism, reduces material and assembly costs, and simplifies packaging and transportation by eliminating visible handles, while allowing for reversible door configurations.

Implementation Method 1

a pivoting member having a pivoting shaft extending in a longitudinal direction of the grip part, a press portion extending from the pivoting shaft outward of the door, and an operating portion extending from the pivoting shaft inward of the door

Methodology Applied
Scientific EffectLever: Lever

Implementation Method 2

allowing for easy door opening with reduced force

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentUS8277005B2Refrigerator door opening device and refrigerator having the same
Publication Date: 2012.10.02 SAMSUNG ELECTRONICS CO LTD
  • US8277005B2 patent drawing
  • US8277005B2 patent drawing
  • US8277005B2 patent drawing

AI summary

A refrigerator including a body, a door movably coupled to the body, a gasket installed at a rear surface of the door to establish a gasket seal between the door and the body when the door is in a closed position, a first mount provided at a first location of the door located adjacent to a left edge portion of the door, a second mount provided at a second location of the door located adjacent to a right edge portion of the door, and a door opening device to cause the gasket seal to break between the door and the body, the door opening device including a pivoting member mounted to the door, first and second operating portions and a first push unit mounted to a first mount to press against the body when being pressed by the first operating portion of the pivoting member.