Refrigerator Storage Box Rail Structure for Smooth Pull-Out Access

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Solution Overview

Problem

Existing refrigerators face difficulties in smoothly drawing in or out the storage box due to its weight and interference with the main body, leading to increased power consumption and user inconvenience.

Innovation Solution

A refrigerator design featuring a main body with a storage chamber, a sub door, a fixing rail, and a moving rail that guides the storage box's movement, allowing it to be easily drawn out and in by pressing manipulation, with a handle for separation from the moving rail.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the storage box is made large to increase storage capacity, then the storage capacity is improved, but the weight increases making it difficult to move

Engineering Contradiction:
Improvestorage capacityVSAvoidweight of storage box
Core Design Contradiction:
Volume of moving objectVSWeight of moving object

Solution Approach 1:

The storage box is designed with a movable structure that can transition between a stored position (within the main body) and a drawn-out position (exterior). This dynamic configuration allows the storage box to be small when stored to minimize weight impact, yet provide large capacity when needed for storage operations.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the storage box is drawn out forward to improve accessibility, then the ease of operation is improved, but interference with the main body occurs causing damage

Engineering Contradiction:
Improveaccessibility of storage boxVSAvoiddamage to storage box
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

A guide rail system acts as an intermediary mechanism between the storage box and the main body. The guide rail provides a constrained path for the storage box to move along, ensuring smooth extraction and retraction while preventing lateral interference with the main body structure that could cause damage.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If the door is opened longer to manipulate the storage box, then the ease of operation is improved, but the power consumption increases

Engineering Contradiction:
Improvemanipulation of storage boxVSAvoidpower consumption
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The storage box is pre-positioned within the main body in a ready state, allowing users to quickly access and manipulate it without needing to open the door extensively. The guide rail system enables smooth, preliminary-guided movement that reduces the time the door needs to remain open, thereby reducing power consumption from the door motor.

Inventive Principle:
Principle #10Preliminary action

4Stability of the object's composition

If the storage box is fixed securely to the main body to improve stability, then the stability is improved, but the ease of operation deteriorates making it difficult to draw out

Engineering Contradiction:
Improvestability of storage boxVSAvoidease of drawing out storage box
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The connection between the storage box and main body is designed to be dynamic rather than fixed. The guide rail system provides stable guidance during movement while allowing the storage box to be easily inserted and removed. The connection transitions from a loose state (when not in use) to a guided state (during movement) to both stability and ease of operation.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8905501B2Refrigerator
Publication Date: 2014.12.09 LG ELECTRONICS INC
  • US8905501B2 patent drawing
  • US8905501B2 patent drawing
  • US8905501B2 patent drawing

AI summary

Disclosed herein is a refrigerator including: a main body configured to define a storage camber; a main door rotatably coupled to the main body; a sub door provided between the main body and the door and rotatably coupled to the main body, the main door being rotated independently of the sub door and the sub door being rotated along with the main door; a storage box received in the storage camber to be drawn out therefrom; a fixing rail fixed to one side of the storage camber; a moving rail provided to be movable along the fixing rail and moving along with the storage box; and restraining means provided in one side of a part configured to move integrally along with the storage box and in one side of a part formed integrally with the storage camber and configured to allow the storage box to be selectively drawn out from the storage camber when a press manipulation is conducted and released on the storage box.