Motor Assembly Fixing Unit for Shaft Alignment and Noise Control
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Solution Overview
Problem
The rotation axis of a rotary shaft in a motor assembly can become inclined, leading to vibration and noise generation when the shaft is rotated.
Innovation Solution
A motor assembly design that includes a fixing unit with a bearing, bushing holder, and motor housing configuration to support the rotary shaft, using a support flange and insulator to prevent inclination and reduce vibration and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional motor assembly is used with a rotary shaft, then the motor can rotate the impeller to circulate water, but the rotation axis becomes inclined causing vibration and noise
Solution Approach 1:
The patent introduces a fixing unit as an intermediary component between the motor housing and the rotary shaft. This fixing unit includes a support flange that contacts the motor housing and a bearing that supports the rotary shaft, creating a stable intermediate structure that prevents shaft inclination and eliminates vibration and noise while maintaining water circulation function
Solution Approach 2:
The motor assembly is segmented into distinct functional components: the motor housing, the fixing unit (with support flange and bearing), and the rotary shaft. This segmentation allows the fixing unit to specifically address the vibration and noise problem through its bearing support mechanism, while the rest of the motor maintains its water circulation capability
2Device complexity
If the rotary shaft is supported without a fixing unit, then the structure is simpler, but the rotation axis becomes inclined leading to vibration and noise
Solution Approach 1:
The fixing unit serves as a necessary intermediary structure between the motor housing and rotary shaft. The support flange provides a stable mounting interface with the motor housing, while the bearing ensures stable rotary shaft support. This intermediary structure is minimal yet sufficient to achieve rotation axis stability without excessive complexity
Data Source
AI summary
Disclosed is a motor assembly including a rotary shaft, a fixing unit that supports the rotary shaft such that the rotary shaft is rotatable, and a motor housing accommodating at least a portion of the fixing unit, and directly contacting the fixing unit to support the fixing unit.