Metal Refrigerator Door Handle Assembly With Simplified Fixing
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Solution Overview
Problem
Conventional refrigerators face challenges in manufacturing metal doors with integrated metal handles due to complex structural requirements, often resorting to plastic injection-molded handles with a metallic appearance that are prone to scratches and lack actual metal surface hardness.
Innovation Solution
The design incorporates a metal door with a cap panel and fixing member system, featuring bending portions, recesses, and adhesive bonding, allowing for die casting, press molding, or extrusion molding to create a robust metal handle and door with a metallic appearance, overcoming manufacturing difficulties and surface hardness limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal door with integrated metal handle is manufactured, then the surface hardness and durability are improved, but the manufacturing complexity increases
Solution Approach 1:
The door assembly is divided into separate components: a door panel and a handle assembly. The handle assembly includes a handle body and a handle cover that can be manufactured separately and then assembled together, reducing the overall manufacturing complexity while maintaining metal surface hardness on both components.
Solution Approach 2:
The handle is extracted as a separate component from the door panel. This allows the handle to be manufactured independently with optimal metal properties for surface hardness, while the door panel can be manufactured separately, reducing the complexity of manufacturing an integrated metal door-handle assembly.
2Device complexity
If a plastic injection-molded handle with metallic appearance is used, then the manufacturing complexity is reduced, but the surface hardness and durability deteriorate
Solution Approach 1:
The handle assembly uses composite construction with a metal handle body providing structural strength and surface hardness, combined with a handle cover that can be metal or metal-like material. This composite approach maintains metal surface hardness while allowing for manufacturing flexibility.
3Shape
If a plated or deposited door with pocket type handle is used, then the metallic appearance is improved, but the scratch resistance and surface durability worsen
Solution Approach 1:
Instead of using plated or deposited surfaces on plastic that are prone to scratching, the invention uses actual metal components for both the door panel and handle assembly. The metal surfaces provide genuine metallic appearance without the vulnerability of plated surfaces, as the metal itself forms the structural and aesthetic element.
Data Source
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AI summary
There is disclosed a refrigerator (100) comprising a cabinet (1) including a storage compartment provided therein and a door (2) opening and closing the storage compartment, wherein the door (2) comprises a door panel (3) made of metal and defining a front surface and a lateral surface of the door (2), a bending portion (4) bending from the door panel (3), a cap panel (5) made of metal and defining an upper and lower surface of the door (2) by being supported to one surface of the bending portion (4), a recess (6) provided in the cap panel (5) as a handle and a fixing member (7) pressing the other surface of the bending portion (4) and fixed with the cap panel (5), and the bending portion (4) is pressed between the cap panel (5) and the fixing member (7) and the cap panel (5) is fixed to the door panel (3).