Motor Stator Collar Assembly for Precise Alignment and Low Noise
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Solution Overview
Problem
Existing motor manufacturing methods face challenges in accurately positioning the stator relative to the case, leading to potential misalignment and vibration, which can result in unnecessary sound emission.
Innovation Solution
A method involving a collar member with a circular ring and a claw, where the stator is positioned by bringing the claw into contact with the case's inner surface, and then fixed using a rod-shaped fixing member that deforms the claw, ensuring the stator is separated from the case's inner surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the stator is positioned by bringing the outer circumferential surface into contact with the inner surface of the case, then alignment is achieved, but vibration is transmitted to the case causing sound emission
Solution Approach 1:
The collar member acts as an intermediary between the stator and the case. The claw of the collar member contacts the inner surface of the case to provide positioning, while the stator is held by the collar member without direct contact between the stator and case, thereby preventing vibration transmission while maintaining alignment precision
Solution Approach 2:
The positioning function is segmented into two separate contact points: the claw contacts the case inner surface for positioning, while the stator is held by the collar member structure. This segmentation separates the positioning function from the vibration transmission path, allowing alignment without direct stator-case contact
2Stability of the object's composition
If a fixing member is used to secure the stator, then stability is improved, but the complexity of the assembly increases
Solution Approach 1:
The collar member combines multiple functions into a single component: it provides positioning through the claw, holds the stator through the through hole, and facilitates fixation by guiding the fixing member. This merging reduces assembly complexity while maintaining stator stability
Solution Approach 2:
The collar member serves multiple purposes: positioning (via claw contact with case), support (through the through hole for stator), and fixation guidance (for the fixing member). This multi-functionality reduces the need for separate components, simplifying the overall assembly while ensuring stator stability
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 approach achieves precise alignment of the stator relative to the case while minimizing sound emission by preventing vibration transmission through the collar member.
Implementation Method 1
fixing the stator to the case by tightening the fixing member so that the fixing member moves along an axial direction to deform the claw
Data Source
AI summary
A method of manufacturing a motor includes accommodating a stator in a case; inserting a fixing member having a rod shape into a circular ring of a collar member and a through hole formed in the stator, the collar member including the circular ring formed in an annular shape and a claw extending in a radial direction of the circular ring; positioning the stator relative to the case by bringing a tip of the claw into contact with an inner surface of the case; and fixing the stator to the case by tightening the fixing member such that the fixing member moves along an axial direction to deform the claw. When the stator is fixed to the case by the fixing member, the claw is not in contact with the inner surface of the case.