Reinforced Washing Machine Drum Structure for Uniform Rolling
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Solution Overview
Problem
The existing drum-type washing machines face issues with the strength of lifter installation sections being compromised during the rolling process to form a cylindrical rotating tub body, leading to irregular deformation and reduced washing efficiency due to the alternation of concave-convex and lifter installation sections on the inner surface.
Innovation Solution
The solution involves forming reinforcement sections on the rotating tub body to enhance the strength of lifter installation sections, ensuring uniform deformation and maintaining a cylindrical shape by extending these sections along the plate and positioning them to support the lifter installation sections, thereby preventing excessive deformation during the rolling process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If lifter installation sections are provided on the rotating tub body to install lifters, then washing efficiency is improved, but strength of the lifter installation section is decreased due to installation holes
Solution Approach 1:
The patent applies local quality by providing reinforcement sections specifically at the lifter installation sections where strength is needed, while maintaining the concave-convex structure in other areas for washing efficiency. This localized reinforcement approach strengthens only the critical areas without affecting the overall washing performance.
2Productivity
If concave-convex sections and lifter installation sections are alternately installed on the inner peripheral surface, then washing performance is improved, but irregular deformation occurs during rolling due to strength difference
Solution Approach 1:
The reinforcement sections are locally applied at the lifter installation sections to compensate for the strength difference between alternating sections. This ensures that during the rolling process, both concave-convex sections and lifter installation sections deform uniformly into the cylindrical shape without irregular distortion.
Solution Approach 2:
The reinforcement sections are provided in advance before the rolling process to prevent irregular deformation. By pre-strengthening the lifter installation sections, the patent counteracts the potential for differential deformation that would otherwise occur due to the alternating structure.
3Shape
If the rotating tub body is rolled into cylindrical shape, then a complete cylindrical structure is obtained, but the lifter installation section is extremely deformed due to low strength
Solution Approach 1:
Reinforcement sections are strategically placed at the lifter installation sections to provide localized strength support during the rolling process. This ensures that the entire rotating tub body, including the previously weak lifter installation sections, can be uniformly formed into the desired cylindrical shape.
Data Source
AI summary
A cylindrical rotating tub body and a drum-type washing machine having the same, in which the rotating tub body is formed by rolling a plate such that both ends of the plate are connected to each other. The washing machine includes a cylindrical rotating tub body and a plurality of lifters, which are spaced apart from each other on an inner peripheral surface of the rotating tub body. The rotating tub body includes lifter installation sections on which a plurality of lifters are installed, concave-convex sections having a plurality of concave-convex parts and being installed between the lifter installation sections, and reinforcement sections to reinforce the strength of the lifter installation sections. The lifter installation sections having a strength lower than that of the concave-convex sections are reinforced due to the reinforcement sections, so that the lifter installation sections are prevented from being extremely being deformed during the rolling process.