Recessed Refrigerator Door Opening Mechanism for Narrow Door Gaps
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Solution Overview
Problem
Side-by-side refrigerators face challenges in easily opening doors due to pressure differences and interference issues with conventional door opening devices, especially in models with heavy doors and small gaps between doors, making operation inconvenient and prone to damage.
Innovation Solution
A door opening device with a recessed handle and push kit design, featuring a pushrod, rod guide, and elastic members, allowing for diagonal offset installation to prevent interference and simplify replacement, while maintaining a sleek appearance by being mounted inwardly on the door surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional door opening device is installed to protrude from the outer surface of the door, then the door can be opened against pressure difference, but the device cannot be installed in side-by-side refrigerators with small gaps between doors and interferes with adjacent doors
Solution Approach 1:
The door opening device is repositioned from a protruding installation on the outer surface to a recessed installation on the inner surface of the door. This dimensional change allows the device to fit within the available space in side-by-side refrigerators without interfering with adjacent doors, while still maintaining its door-opening function through the pushrod mechanism that extends when activated.
Solution Approach 2:
Instead of having the door opening device protrude outward from the door surface, the invention inverts the installation approach by placing the device on the inner surface of the door. The pushrod extends outward when activated, reversing the typical extension direction and allowing the device to function effectively while maintaining a compact profile when not in use.
2Adaptability or versatility
If the door opening device is installed on the inner surface of the door, then it can be applied to side-by-side refrigerators with small gaps, but the device structure becomes more complex with recessed mounting
Solution Approach 1:
The mounting bracket and the door opening device housing are merged into a single integrated component that is directly mounted to the inner surface of the door. This consolidation eliminates the need for separate mounting structures and recesses, simplifying the overall device architecture while maintaining the ability to fit within side-by-side refrigerator door thickness.
3Quantity of substance
If heavy doors with large-capacity storage compartments are used, then storage capacity is increased, but the force required to open the door becomes considerably large
Solution Approach 1:
A pushrod acts as an intermediary mechanical element between the user's input force and the door. The pushrod is positioned to leverage the door's hinge geometry, providing mechanical advantage that reduces the input force required. When the pushrod is activated, it pushes against the door near the hinge, creating a rotational moment that assists in overcoming the door's weight and the pressure differential, making it easier to open heavy doors with large storage capacity.
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
Enables easy operation of doors with reduced force requirement, prevents interference between adjacent doors, and facilitates easy replacement and repair, enhancing user convenience and aesthetic appeal.
Implementation Method 1
a pushrod (31) which pushes the cabinet (10) when the door (15) is opened; an elastic member which is compressed by the pushrod (31)
Data Source
AI summary
A side-by-side refrigerator having a door opening device which includes a cabinet and a door to open and close a front surface of the cabinet, the door opening device comprising: a handle which is mounted on a front surface of the door to perform a seesaw motion; and a push kit which is mounted on a side surface of the door to interwork with the handle, wherein a portion on which the handle and the push kit are mounted is formed to be recessed in the door.