Stator Coil Insertion with Guided Opening Jigs for Insulation Protection
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Solution Overview
Problem
The existing stator assembling methods can cause insulation failure due to breakage and jamming of insulating members when guide jigs deviate in position or incline, leading to contact with the insulating members during the assembly process.
Innovation Solution
A stator assembling method and apparatus that restricts the movement of opening jigs in the circumferential direction using a guide adjacent to the stator core, preventing contact with insulating members and ensuring they are not broken or jammed between the jigs and teeth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If guide jigs are moved radially outward to insert coils into slots, then coil insertion is achieved, but guide jigs may contact and damage insulating members when they deviate in position or incline
Solution Approach 1:
A guide structure is introduced as an intermediary component between the guide jigs and the insulating members. The guide restricts the movement of guide jigs in the circumferential direction, preventing direct contact between the guide jigs and insulating members, thereby avoiding damage while maintaining the coil insertion function
Solution Approach 2:
The guide structure is positioned and configured in advance to pre-restrict the circumferential movement of guide jigs before the coil insertion process begins. This preliminary constraint prevents potential damage to insulating members during the subsequent guide jig movement
2Ease of operation
If guide jigs are used to open insulating members, then coil insertion is facilitated, but insulating members may be jammed between guide jigs and teeth
Solution Approach 1:
The guide acts as an intermediary that mediates the interaction between guide jigs and insulating members. By restricting guide jig movement, the guide prevents the jamming harmful effect while allowing the opening function to proceed
Solution Approach 2:
The guide structure provides a preventive constraint that cushions against potential jamming before it occurs. By restricting circumferential movement in advance, the guide eliminates the risk of insulating members being trapped between guide jigs and teeth
Data Source
AI summary
The stator assembling method includes: the step of disposing a guide to restrict circumferential movement of opening jigs inserted into slots; and the step of moving coils and the opening jigs together to a second side in a radial direction relative to a stator core while guiding the opening jigs such that circumferential movement of the opening jigs is restricted by the guide, thus inserting slot-housed portions into the slots.