Motor production method and motor

The motor manufacturing method addresses the inefficiency of high viscosity resins by using multiple injection points and end plate through holes to ensure rapid resin spread and contact, resulting in efficient heat dissipation and reduced manufacturing time.

WO2025004431A1PCT designated stage expired Publication Date: 2025-01-02IHI CORP
View PDF 5 Cites 0 Cited by

Patent Information

Application Number
PCT/JP2024/004409
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-06-26
Filing Date
2024-02-08
Publication Date
2025-01-02

AI Technical Summary

Technical Problem

High viscosity and thermal conductivity resins used for waterproofing and heat dissipation in motors take a long time to spread and may harden before filling is complete, leading to inefficiencies in heat transfer and potential thermal resistance issues due to gaps between the resin and casing.

Method used

A motor manufacturing method involving multiple injection points and end plate through holes allows uncured resin to spread quickly over the stator placement area, ensuring contact with both the coil and the end plate, thereby forming an effective heat path for efficient heat dissipation.

Benefits of technology

This method enables the production of motors that efficiently release heat to the outside, reducing manufacturing time and preventing thermal resistance issues, even with high viscosity resins, by ensuring the resin contacts both the coil and the end plate.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure JP2024004409_02012025_PF_FP_ABST
    Figure JP2024004409_02012025_PF_FP_ABST
Patent Text Reader

Abstract

Provided is a motor production method including: an attachment step of attaching an end plate, which is provided with a first end plate through-hole and a second end plate through-hole, to a housing storing a motor stator with a wound coil; a first injection step of pouring, after the attachment step, uncured resin from the first end plate through-hole into a motor rotor installation area of the housing storing the motor stator; and a second injection step of pouring uncured resin from the second end plate through-hole into the motor rotor installation area of the housing.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Manufacturing device of magnet embedded core

    JP2018130026A

  • Method of manufacturing pm motor, and pm motor

    JP2022184651A

  • Crystalline radical-polymerizable composition for securing magnet of dynamo-electric machine rotor core, dynamo-electric machine rotor core using said composition, and method for manufacturing said dynamo-electric machine rotor core

    WO2021200817A1

  • Motor and pump apparatus

    JP2010035406A

  • Electric motor and manufacturing method of the same

    JP2014225945A