Washing Machine Motor Mounting Structure for Vibration Isolation
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Solution Overview
Problem
Conventional washing machines generate noise due to the direct coupling of the stator to the tub, which effectively transfers vibration and results in increased noise levels.
Innovation Solution
A mounting member is introduced between the stator and the bearing housing, which reduces vibration transmission by decoupling the motor from the tub, using bent stator and bearing couplers to distribute and absorb vibration energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stator is directly coupled to the bearing housing that is inserted into the tub, then the motor can be firmly mounted, but vibration is effectively transferred to the tub generating noise
Solution Approach 1:
A mounting member is introduced as an intermediary component between the stator and the bearing housing. This mounting member includes bent couplers that act as vibration-absorbing elements, decoupling the direct rigid connection while maintaining motor mounting stability. The bent structure of the couplers allows them to flex and absorb vibration energy, preventing its direct transmission to the tub.
Solution Approach 2:
The mounting member utilizes flexible bent couplers made of elastic material that can deform under vibration loads. These flexible elements absorb mechanical vibrations through elastic deformation, reducing the transmission of vibratory energy from the motor stator to the bearing housing and tub assembly.
2Device complexity
If the stator is directly coupled to the tub, then the structure is simple, but vibration transmission cannot be reduced effectively
Solution Approach 1:
The mounting member serves as a mediating structure between the stator and bearing housing. Rather than creating a complex multi-component assembly, it uses a single integrated piece with bent couplers that provides both structural support and vibration damping functions, achieving vibration reduction with minimal added complexity.
Solution Approach 2:
The couplers are designed with specific bend radii and thickness parameters that optimize their vibration-absorbing characteristics. By carefully controlling the geometric parameters of the bent sections, the mounting member achieves effective vibration damping while maintaining structural integrity and minimizing overall complexity.
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
This solution significantly reduces noise generation by effectively decoupling the motor's vibration from the tub, enhancing the operational quietness and reliability of the washing machine.
Implementation Method 1
a mounting member disposed between the stator and the bearing housing and coupled to the bearing housing and the stator, the mounting member functioning to reduce vibration transferred from the stator to the tub
Implementation Method 2
the mounting member is deformed by a load of the stator
Data Source
AI summary
A washing machine in accordance with the present invention includes a mounting member disposed between a stator and a bearing housing. Thus, when a motor is rotated according to an operation of the washing machine, the transmission of vibration, which is generated by a repulsive force of the stator, to the bearing housing can be reduced efficiently. Accordingly, a tub coupled to the bearing housing can be prevented from vibrating due to the vibration of the stator, and noise due to the vibration of the tub can be reduced.