Refrigerator Hinge Box Structure for Heavy Wide-Door Load Distribution
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Solution Overview
Problem
Cooling devices, particularly refrigerators and freezers, with wide doors can become very heavy due to their dimensions and the weight of stored objects, leading to significant loads on hinges and connection points, which can result in mechanical instability and operational safety issues.
Innovation Solution
A reinforced hinge box embodiment is introduced, featuring a support frame with vertical and horizontal profile elements, lower and upper hinge boxes, and connection brackets made of metal, particularly steel, to enhance stability and support the hinges, especially at the connection points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If wide doors are used to increase storage capacity, then the cooling device can store more objects, but the door weight increases and causes excessive load on hinges and connection points
Solution Approach 1:
The invention transitions from a simple hinge connection to a three-dimensional hinge box structure embedded in the support frame. This box structure distributes the door load across multiple connection points and structural elements, effectively managing the increased force from wider doors without compromising the storage capacity benefit.
2Quantity of substance
If door width is increased to accommodate more stored objects, then storage capacity improves, but mechanical stability deteriorates due to excessive door weight
Solution Approach 1:
The hinge connection system is segmented into multiple components: upper and lower hinges, hinge boxes, connection brackets, and support frame elements. This segmentation distributes the mechanical stress from wide doors across multiple discrete connection points, preventing concentration of force and maintaining overall mechanical stability.
Solution Approach 2:
The invention introduces a three-dimensional hinge box structure embedded in the support frame, transforming the simple hinge connection into a volumetric support system. This box structure provides multiple walls and connection surfaces that distribute door weight and maintain stability.
3Adaptability or versatility
If heavy furniture plates are installed on doors for built-in cooling devices, then the cooling device can be integrated into furniture, but the load on hinges and connection points increases significantly
Solution Approach 1:
The hinge box structure provides a three-dimensional framework that can accommodate the additional weight of furniture plates. The box's multiple walls and connection points distribute the combined load of door and furniture plate across the support frame structure.
Solution Approach 2:
The connection system is divided into separate hinge boxes and connection brackets that can independently support portions of the furniture plate load, allowing the integrated furniture application while managing the increased force through distributed connection points.
4Device complexity
If simple hinge connections are used, then device complexity is reduced, but reliability deteriorates under heavy door loads
Solution Approach 1:
The simple hinge connection is replaced with a three-dimensional hinge box structure embedded in the support frame. This box structure provides multiple connection surfaces and structural walls that enhance reliability under heavy loads while adding only moderate complexity to the overall device.
Solution Approach 2:
The connection system is segmented into hinge boxes, connection brackets, and support frame elements, allowing each component to be optimized for its specific function while collectively providing enhanced reliability through distributed load management.
Data Source
AI summary
A cooling device contains a body which has a lower wall, an upper wall, lateral walls and a rear wall. A door is connected to the body by hinges, a support frame provided at a device front side of the body which is close to the door and where the door is connected by the hinges. The support frame contains a hinge box embodiment which has mutual vertical profile elements, an upper hinge box provided at a device upper side where the upper hinge is connected, and a couple of lower hinge boxes provided at a device lower side for the lower hinge and where a lower hinge recess exists in each one in a manner for accommodating the lower hinge and provided in a distanced manner to each other in a width direction. The hinge box embodiment has a lower connection bracket for seating a lower panel.