Refrigerator
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Solution Overview
Problem
Refrigerator doors with increased weight due to additional features and materials require more force to open and close, leading to noise and potential impact issues when closing, and existing damping solutions complicate assembly and maintenance.
Innovation Solution
A refrigerator design incorporating a hinge cover with a damping device that provides a controlled damping force through a push member and oil-based mechanism, minimizing external exposure and enhancing assembly workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a damping device is added to reduce closing speed, then impact and noise are reduced, but device complexity increases
Solution Approach 1:
The damping device is integrated into the hinge cover structure, merging the damping function with the existing hinge assembly. The hinge cover serves dual purposes: shielding the hinge and housing the damping mechanism, thereby reducing overall device complexity while maintaining impact and noise reduction benefits
Solution Approach 2:
The damping device is nested within the hinge cover, with the push member extending through the hinge cover to contact the door. This nested arrangement allows the damping mechanism to be contained within the existing hinge assembly footprint, minimizing additional structural complexity while providing effective damping force
2Shape
If heavy materials are used to enhance outer appearance, then aesthetic quality is improved, but door weight increases
Solution Approach 1:
The door assembly is segmented into functional components: the door body, the hinge cover with damping device, and the hinge mechanism. This segmentation allows the hinge cover to be a separate, replaceable component that provides both aesthetic coverage and damping function without permanently increasing the door's core weight
Solution Approach 2:
The hinge cover acts as an intermediary component between the hinge mechanism and the external environment. It provides aesthetic coverage for the hinge area while housing the damping device, thereby improving outer appearance without requiring heavy materials on the door itself
3Object-affected harmful factors
If a damper is placed to reduce closing speed, then impact is reduced, but damping force is applied when opening, requiring more force
Solution Approach 1:
The damping force is made dynamic and directional: it activates only during door closure when the push member contacts the door, and disengages during opening. The push member's geometry and contact point are designed to provide damping force in the closing direction while minimizing resistance during opening, allowing the door to open smoothly without excessive force
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 allows for smooth door closure, reduces noise and impact, improves assembly efficiency, and simplifies maintenance by integrating the damping device within the hinge cover, ensuring effective damping without additional structural complexity.
Implementation Method 1
a damping device which is in contact with the door to provide a damping force to the door when the door rotates in a closing direction
Data Source
AI summary
A refrigerator includes a cabinet which has a storage space; a door which opens and closes the storage space; a hinge which is provided in the cabinet and rotatably connects the door; and a hinge cover which shields the hinge, in which the hinge cover is provided with a damping device which is in contact with the door to provide a damping force to the door when the door rotates in a closing direction.