Fan structure of a three-phase motor

By using a method of pressing the shaft and base together, automatically winding the stator metal pins, and pressing the iron shell and impeller together, the problems of low production efficiency and unstable connection of three-phase external rotor DC motors are solved, achieving efficient automated production and structural stability.

CN224418626UActive Publication Date: 2026-06-26SHENZHEN SANLY MOTOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN SANLY MOTOR CO LTD
Filing Date
2025-07-28
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

The current production of three-phase external rotor DC motors suffers from problems such as low production efficiency, unstable stator structure assembly, and easy deformation during transportation.

Method used

The structure adopts a shaft and base press-fit connection. The stator uses an automated winding method with metal pin insertion. Combined with the assembly method of pressing the iron shell and impeller, the automated welding of stator pins and PCB board is increased. Silicon steel sheets and plastic insulation frames are used to improve the bonding strength and stability.

Benefits of technology

It has achieved production automation, improved production efficiency, enhanced the bonding strength and stability of the stator structure, prevented deformation of the iron shell, and reduced processing costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224418626U_ABST
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Abstract

The utility model relates to fan production technical field, especially a fan structure of three -phase motor. It includes base, axle, magnetic frame, ball bearing, stator, PCB board, impeller, axle is pressed in on the base, the impeller rotatable connection is established on the axle through ball bearing, the magnetic frame is connected on the impeller, the stator is connected on the base, the magnetic frame is located at the periphery of stator and mutually interval, the PCB board is connected on the base, the stator is equipped with pin foot, and the pin foot is consolidated after passing through the PCB board and is combined with the PCB board. The stator adopts the mode of metal pin foot insertion in the insulating frame, can be through the machine automatic division enameled wire mode and wind, saves manpower, can realize production automation, the iron shell and impeller press fit as a whole in the assembly structure, the axle and base are pressed together, compared with the mode that the axle and metal shell are combined, the axle and base combination length are longer, the concentricity and perpendicularity are high, the combination strength is strong, and the stability is good.
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