Motor Stator Elastic Fixation Structure for Vibration Noise Reduction
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Solution Overview
Problem
Existing electric pumps face issues with stator vibration leading to noise and potential detachment of electronic components due to inadequate fixation, resulting in high costs and easy loosening or falling off of coil springs.
Innovation Solution
A stator design incorporating an elastic member with one end fixed onto an insulating frame, the other end resisting against a bobbin to axially position the stator, using annular undulations with sinking and rising segments to secure the stator against the casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stator is fixed by coil springs and bolts, then the stator can be secured to the housing, but the coil springs easily loosen or fall off, increasing maintenance costs
Solution Approach 1:
The patent removes the coil springs from the fixation system entirely, replacing them with an integrated elastic member that is directly formed as part of the stator structure. This extraction of the problematic spring component eliminates the loosening and falling off issues while maintaining the necessary elastic fixation function.
Solution Approach 2:
The elastic member is merged with the stator structure, forming an integrated component rather than a separate part. The elastic member is directly formed on the stator yoke, combining the stator body and fixation element into a single unified structure, thereby eliminating the need for separate coil springs and bolts.
2Device complexity
If the stator is not sufficiently fixed, then the structure can be simple, but vibration occurs due to alternating electromagnetic fields, increasing noise
Solution Approach 1:
The elastic member is positioned specifically at the stator yoke where fixation is needed, providing localized elastic support and vibration damping. The undulating structure with rising and sinking segments creates specific contact points that absorb vibration while maintaining overall structural simplicity.
Solution Approach 2:
The elastic member provides dynamic fixation by allowing controlled movement and deformation in response to alternating electromagnetic loads. The undulating structure can flex and absorb vibration energy, adapting to the dynamic operating conditions rather than providing rigid fixed fixation.
3Device complexity
If the stator is not sufficiently fixed, then the fixation structure can be simple, but electronic components such as the printed circuit board loosen or fall off
Solution Approach 1:
The elastic member is merged with the stator structure, forming an integrated component rather than a separate part. The elastic member is directly formed on the stator yoke, combining the stator body and fixation element into a single unified structure, thereby eliminating the need for separate coil springs and bolts.
Solution Approach 2:
The elastic member is divided into multiple rising and sinking segments arranged in an undulating pattern. This segmentation provides multiple contact points and distribution of fixation force, enhancing the stability of electronic components while maintaining structural simplicity.
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 elastic member effectively prevents stator loosening and detachment, reducing vibration-induced noise and ensuring stable fixation, thereby enhancing the stator's durability and reducing maintenance costs.
Implementation Method 1
an elastic member with one end fixed onto the insulating frame, the other end of the elastic member is resisted against and thereby forcing the bobbin to axially position the stator
Data Source
AI summary
a stator core, a bobbin fixed on the stator core, and a plurality of windings wound on the bobbin, characterized in that the stator further comprises an elastic member with one end fixed onto the insulating frame, the other end of the elastic member is resisted against and thereby forcing the bobbin to axially position the stator.