Refrigerator Door Hinge Height Locking to Prevent Air Leakage
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Solution Overview
Problem
Conventional refrigerator door hinge apparatuses suffer from installation errors and air leakage due to improper positioning of the door, leading to inefficient temperature maintenance and increased power consumption.
Innovation Solution
A door hinge apparatus with a hinge body and screw hole system that allows height control of the hinge shaft through rotation, combined with a selective rotation preventing unit to fix or release the hinge shaft, ensuring precise door positioning and minimizing air leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the hinge shaft is fixedly coupled to the hinge body by caulking, then the structure is simple, but installation errors cause improper door positioning and air leakage
Solution Approach 1:
The hinge shaft is designed with a threaded portion that allows it to be rotatably coupled to the hinge body through a threaded hole, enabling height adjustment by rotation. This dynamic coupling replaces the fixed caulking connection, allowing the door position to be precisely adjusted to eliminate gaps and prevent air leakage while maintaining manufacturing simplicity.
2Manufacturing precision
If the hinge shaft height is adjustable by rotation, then the door positioning precision is improved, but the hinge shaft may rotate during door operation causing position changes
Solution Approach 1:
A locking mechanism is provided that can lock the hinge shaft at the adjusted height position. This preliminary locking action prevents the hinge shaft from rotating during subsequent door operations, maintaining the precisely adjusted door position and preventing air leakage while preserving the ability to readjust when needed.
3Stability of the object's composition
If the hinge shaft is locked to prevent rotation, then the door position stability is improved, but the ability to adjust for installation errors is reduced
Solution Approach 1:
The locking mechanism is designed to be releasable, allowing the hinge shaft to be unlocked and re-adjusted when installation errors are detected. This dynamic locking system provides both stability during normal operation and adaptability during installation, enabling the door position to be precisely optimized while maintaining stability during use.
Data Source
AI summary
A door hinge apparatus of a refrigerator comprises a hinge body having a screw hole and mounted at a refrigerator body, a hinge shaft coupled to the screw hole of the hinge body so that a height thereof can be controlled by a rotation and for rotation-supporting a refrigerator door, and a selective rotation preventing unit for selectively fixing or releasing the hinge shaft. As the refrigerator door is always located at a position to sufficiently cover a freezing chamber or a cooling chamber of a refrigerator at the time of assembling or using the refrigerator door, cold air inside the freezing chamber or the cooling chamber is prevented from being leaked to outside through the refrigerator door.