Motor Stator Fixing Member Suppresses Vibration
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Solution Overview
Problem
Existing motor designs face challenges in suppressing stator vibration and noise due to magnetic forces, and conventional elastic adhesives require a long time to cure, necessitating the stabilization of the stator position during this period.
Innovation Solution
A motor design featuring a cylindrical bearing housing with a fixing member that securely positions the stator, utilizing a ring-shaped fixing member to prevent displacement and vibration by press-fitting or shrink-fitting it to the bearing housing, and incorporating an elastic member to absorb vibrations, ensuring accurate positioning and reduced noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an elastic adhesive is used to suppress stator vibration, then vibration absorption is improved, but the curing time increases and position stability during curing deteriorates
Solution Approach 1:
The fixing member is installed on the bearing housing before the elastic adhesive is applied. This preliminary mechanical fixation prevents stator displacement during the adhesive curing process, allowing the use of elastic adhesive for vibration suppression without suffering from its long curing time penalty.
Solution Approach 2:
The fixation function is divided into two parts: a fixing member that provides immediate mechanical position stabilization, and an elastic adhesive that provides vibration absorption. This segmentation allows each component to perform its specific function optimally without compromising the other.
2Stability of the object's composition
If a fixing member is added to stabilize stator position during adhesive curing, then position stability is improved, but device complexity increases
Solution Approach 1:
The fixing member is designed to perform multiple functions: it mechanically positions the stator during assembly and curing, and also serves as a structural component of the bearing housing assembly. This multi-functionality reduces the need for separate dedicated positioning features, thereby minimizing the increase in device complexity.
Solution Approach 2:
The fixing member is integrated with the bearing housing structure, combining the housing and fixation functions into a single unified component rather than separate parts. This merging approach reduces the overall number of components and simplifies the assembly process.
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
The design effectively suppresses stator displacement and vibration during adhesive curing, reducing noise and maintaining precise positioning, thereby enhancing motor stability and performance.
Implementation Method 1
incorporating an elastic member to absorb vibrations
Data Source
AI summary
A motor includes a bearing housing, a stator, and a fixing member. The stator includes a stator core, an insulator, and a lead. The insulator is an insulating body that covers at least a portion of the stator core. The lead is wound around the stator core with the insulator interposed therebetween. The bearing housing includes a first bearing holding portion and a second bearing holding portion that hold two bearings; and an intermediate portion that is positioned between the first bearing holding portion and the second bearing holding portion in the vertical direction. The lower surface of the fixing member is in contact with the upper surface of the stator. The fixing member is fixed at a position opposite the intermediate portion in the radial direction. As a result, the displacement of the stator relative to the bearing housing is suppressed.