Reinforced Damper Mount Structure for Drum Washing Machines
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Solution Overview
Problem
Conventional washing machines with damper fixing units formed by cutting the bottom plate are prone to damage due to repetitive vibration and shock, especially at the fragile boundary between the cut portion and the damper fixing unit.
Innovation Solution
A drum type washing machine with a reinforced damper fixing unit formed by bending a peripheral portion around the cut portion of the bottom plate to create a reinforcing portion that protrudes upward, providing increased rigidity and integrating it with the damper fixing unit, along with reinforcing ribs at connecting portions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the damper fixing unit is formed by cutting a portion of the bottom plate, then the manufacturing process is simplified, but the boundary between the cut portion and the damper fixing unit becomes fragile and prone to damage
Solution Approach 1:
Reinforcing portions are formed around the cut portions of the bottom plate before the damper fixing unit is assembled. This preliminary reinforcement prevents the boundary from becoming fragile during subsequent assembly and operation, resolving the contradiction between simplified manufacturing and damage resistance.
Solution Approach 2:
The reinforcing portions are strategically placed only around the cut portions where fragility occurs, rather than reinforcing the entire bottom plate. This localized reinforcement maintains manufacturing simplicity while specifically addressing the weakness at the boundary between the cut portion and damper fixing unit.
2Strength
If the damper fixing unit is attached to the bottom plate by welding, then the connection strength is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The reinforcing portions are formed in advance on the bottom plate before the damper fixing unit is attached. This preliminary reinforcement provides the necessary connection strength without requiring welding, thus avoiding increased manufacturing complexity while maintaining strong connections.
Solution Approach 2:
The welding process is completely removed from the manufacturing process. Instead of using welding to achieve connection strength, the invention extracts the welding step and replaces it with mechanically formed reinforcing portions that provide equivalent or superior strength without the complexity of thermal joining processes.
Data Source
AI summary
A drum type washing machine capable of preventing/reducing damage to a damper fixing unit provided on a bottom plate for securing a damper at a fixed position by a reinforced rigidity of the damper fixing unit. The drum type washing machine includes a water tub installed in a body, at least one damper to support the water tub, and a damper fixing unit provided on the bottom plate of the body to secure the damper at a fixed position. The damper fixing unit is formed via cutting of the bottom plate and has a reinforced rigidity by a reinforcing portion formed around each cut portion of the bottom plate.