Motor Coil Support Assembly for EPS
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional motor designs face challenges in maintaining accurate positioning of seal members during assembly, leading to low assembling performance due to the complexity of securing the seal member to the housing without compromising positioning accuracy.
Innovation Solution
The motor design incorporates a coil support system with a base and a coil support portion that includes a stator fitting portion and a coil support fitting portion, allowing for precise adjustment and fitting through a gap, enabling easier assembly and positioning of the coil support member relative to the stator, while also accommodating a bus bar holder and ribs for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the seal member is secured to the housing to prevent movement, then positioning accuracy is improved, but the assembly process becomes complicated and assembling performance decreases
Solution Approach 1:
The coil support member is divided into a base and a coil support portion, allowing independent positioning and assembly. The base can be positioned on the stator while the coil support portion is inserted into the holder, simplifying the overall assembly process while maintaining positioning accuracy through the through-hole alignment feature
Solution Approach 2:
The holder acts as an intermediary component that receives both the bearing and the coil support portion. The through-hole in the holder provides a guiding feature that ensures accurate positioning of the coil support portion without requiring complex securing mechanisms between the coil support member and stator
2Productivity
If the seal member is left unsecured to simplify assembly, then assembling performance is improved, but positioning accuracy deteriorates
Solution Approach 1:
The holder is designed with a pre-formed through-hole that serves as a positioning feature. This preliminary structural feature ensures that when the coil support portion is inserted into the holder, it automatically achieves accurate positioning without requiring additional securing operations or adjustments during assembly
Solution Approach 2:
The coil support member's base is designed to be placeable on the stator with inherent positioning capability through the holder's through-hole. The structure serves itself by using the holder's geometric feature to maintain positioning accuracy without requiring external securing mechanisms or complex assembly procedures
Data Source
AI summary
A motor includes a rotor, a stator including coils defined by windings of coil wires, a coil support into which the coil wires are inserted, a bearing supporting the shaft, a holder with a through-hole that holds both the bearing and the coil support. The coil support includes a base on the top surface of the stator, and a coil support portion extending axially upward from the base, at least a portion of which is located in the through-hole. The base is fitted to the stator through a gap.