Refrigerator Pillar Locking Mechanism to Prevent Door Seal Damage
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Solution Overview
Problem
In refrigerators, the pillar mechanism used to prevent cool air leakage between compartment doors often gets stuck in an open state or is damaged when the doors are closed, leading to incomplete sealing and air leakage, especially when the first refrigerating compartment door is strongly opened or closed with the pillar spread.
Innovation Solution
A locking device is integrated into the pillar's hinge assembly, which prevents the pillar from rotating until the first refrigerating compartment door is fully closed, ensuring it remains folded and preventing damage by maintaining the pillar in a controlled, locked state during door operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pillar is rotatably coupled to the first refrigerating compartment door without a locking device, then the pillar can rotate freely to allow door operation, but the pillar may be maintained in an opened state when the door is opened and may collide with the holder when the door is closed
Solution Approach 1:
The locking device is activated in advance when the first refrigerating compartment door is opened, automatically locking the pillar in a folded state before door closure occurs. This preliminary locking action prevents the pillar from rotating into harmful positions during subsequent door operations, resolving the contradiction between operational freedom and position control reliability.
2Reliability
If the pillar is spread to prevent cool air leakage, then sealing is improved, but the first refrigerating compartment door cannot be completely closed when the second refrigerating compartment door is closed
Solution Approach 1:
The pillar's state is made dynamic through the locking mechanism that transitions between locked (folded) and unlocked (spread) states based on door position. When the first door is opened, the locking device automatically folds and locks the pillar, enabling complete door closure. When the first door is closed, the pillar can spread to provide sealing. This dynamic adaptation resolves the contradiction between sealing effectiveness and door closure capability.
3Adaptability or versatility
If the pillar is allowed to rotate freely during door operation, then the pillar can adapt to door movement, but the pillar may be damaged through collision with the holder
Solution Approach 1:
The locking device applies a counter-action by locking the pillar in a folded state when the first refrigerating compartment door is opened, preventing the pillar from rotating and colliding with the holder. This preliminary protective action counteracts the potential harmful rotation before it can occur, resolving the contradiction between adaptability and structural integrity.
Data Source
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AI summary
The refrigerator includes a main body (10) having at least one storage compartment (11), first and second doors (20) opening or closing the storage compartment, a pillar (30) rotatably coupled to the first door by a hinge (340,360,370,440) to prevent cool air from leaking between the first and second doors, and a holder (13)disposed on a side of the storage compartment (11) to guide rotation of the pillar (30). The hinge includes a rotation shaft (350,444) to enable the pillar to rotate and a rotation restriction unit contacting the holder to move the rotation shaft in a direction parallel to an extension direction of the rotation shaft, the rotation restriction unit selectively restricting the rotation of the pillar with respect to the rotation shaft.