Motor-Driven Movable Refrigerator for Heavy Load Mobility

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Solution Overview

Problem

Movable refrigerators with built-in freezing systems are difficult to move, especially when heavy with contents, posing challenges for elderly or disabled users and those in inclined areas due to their weight and design.

Innovation Solution

Incorporation of a main body travel driving unit to automatically rotate wheels and a main body travel switching unit to toggle between automatic and manual movement, allowing users to select the most convenient operation based on their condition and environment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the refrigerator is designed with a built-in freezing system and large storage capacity, then the cooling performance and storage capability are improved, but the weight increases making it difficult to move

Engineering Contradiction:
Improvestorage capacityVSAvoidweight
Core Design Contradiction:
Quantity of substanceVSWeight of moving object

Solution Approach 1:

The patent replaces the manual mechanical movement system with an automated motor-driven wheel system. The movable refrigerator includes a wheel attached to the bottom and a motor that automatically rotates the wheel to move the refrigerator, eliminating the need for users to manually pull or push the heavy appliance.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If the door is placed at the lateral surface for good accessibility, then the ease of operation is improved, but the rigidity of the main body is reduced when the door is open

Engineering Contradiction:
ImproveaccessibilityVSAvoidrigidity
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The patent segments the door assembly from the main body by using a detachable door support structure. The door support is rotatably coupled to the main body and can be independently positioned, allowing the door to be accessed laterally while the main body maintains its structural integrity through the separate support mechanism.

Inventive Principle:
Principle #1Segmentation

3Stability of the object's composition

If the door is placed at the upper portion to maintain rigidity, then the structural stability is improved, but the ease of taking out products from the lowest portion is reduced

Engineering Contradiction:
ImproverigidityVSAvoidproduct accessibility
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The patent implements a rotatable door support that can dynamically adjust its position. The door support is rotatably coupled to the main body, allowing it to be positioned at different angles and heights. This dynamic positioning enables the door to be accessed from the upper portion while maintaining structural rigidity, and simultaneously improves accessibility to lower stored items by allowing the door to be opened and positioned conveniently.

Inventive Principle:
Principle #15Dynamics

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

Enhances the convenience of moving the refrigerator by enabling automatic or manual operation, making it easier to handle regardless of user ability or location, thus improving usability.

Implementation Method 1

a wheel (103) at a lower portion of the main body (101)... a main body travel driving unit (180) configured to automatically rotate the wheel (103) to move the main body (101)

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS8931301B2Movable refrigerator
Publication Date: 2015.01.13 LG ELECTRONICS INC
  • US8931301B2 patent drawing
  • US8931301B2 patent drawing
  • US8931301B2 patent drawing

AI summary

Disclosed herein is a movable refrigerator including a main body travel driving unit configured to automatically rotate the wheel to move the main body and a main body travel switching unit configured to turn on or off the main body travel driving unit to automatically or manually move the main body. Accordingly, the user may suitably select and use automatic operation and manual operation according to the user's healthy condition, the environment of the used place, or the need of use, thereby greatly enhancing the use convenience of a movable refrigerator.