Refrigerator door hinge mechanism
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Solution Overview
Problem
Conventional hinge mechanisms for refrigerator doors face insulation issues due to poor alignment of rubber contact surfaces, caused by space restrictions between the hinge and shaft portions, leading to disorientation of the door.
Innovation Solution
A hinge mechanism with a hinge housing that receives a planar hinging means, locked by helical springs and engagement blocks, allowing for secure attachment and easy removal, ensuring proper alignment and support of the refrigerator door.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional connection elements with longitudinal shafts are used to mount the hinge mechanism, then the hinge can be installed on the refrigerator body, but space occurs between the hinge and shaft portions causing door disorientation and insulation problems
Solution Approach 1:
The hinging means is nested inside the hinge housing, with the planar hinging means received within the confined space of the housing. This nesting arrangement eliminates the need for external longitudinal shafts and connection elements, thereby removing the problematic space between the hinge and mounting components while maintaining proper door alignment.
2Reliability
If the hinging means is securely locked inside the hinge housing, then the refrigerator door is mechanically reliable, but the hinging means becomes difficult to remove for maintenance
Solution Approach 1:
The helical springs automatically engage with the engagement blocks to lock the hinging means in place, providing self-securing functionality. For release, a simple external tool inserted through the unhinging opening can compress the springs to disengage the locking mechanism, enabling easy maintenance while maintaining reliable operation during normal use.
Solution Approach 2:
The helical springs act as an intermediary locking mechanism between the hinging means and the hinge housing. They provide the locking force to secure the hinging means during operation, while also serving as a release mechanism when compressed by an external tool, thus enabling both reliable operation and easy maintenance.
3Manufacturing precision
If space restrictions between upper and lower compartment doors are considered, then proper alignment can be achieved, but lateral control of lower compartment door hinge becomes practically unachievable
Solution Approach 1:
The hinge mechanism transitions from requiring lateral access (horizontal dimension) to front access (depth dimension). By providing the unhinging opening on the front surface of the refrigerator, the design enables maintenance operations through the depth dimension, bypassing the space restrictions in the lateral dimension between upper and lower doors.
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 mechanism provides secure and reliable operation of the refrigerator door, preventing insulation issues by ensuring proper alignment and easy maintenance, particularly beneficial for lower compartment doors where space restrictions are a challenge.
Implementation Method 1
The springs are compressible to retract the contact portions when one needs to remove the hinging means
Data Source
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AI summary
A refrigerator is proposed, comprising a hinge mechanism (8) hingeably supporting and carrying a refrigerator door openable to allow access into the refrigerator, the hinge mechanism (8) having a hinge housing (2) placeable behind a refrigerator wall (1) portion and receiving a hinging means (21) inside the hinge housing (2) in a fixed manner such that the hinging means (21) mechanically communicates with the refrigerator door when effectuating opening and closing of the door.