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Outer rotor type motor

A technology of electric motors and external rotors, which is applied in the manufacture of motor generators, electric components, magnetic circuit rotating parts, etc., and can solve problems such as insufficient fastening force, difficult assembly process, and reduced stability of the rotor 1

Inactive Publication Date: 2008-06-11
DAEWOO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, for the rotor 1 of the above structure, the whole assembly process is difficult because the rotor core 2 having the laminated core 2a and the end elements 2b needs to be press-fitted to the rotor 1
[0014] In addition, because the rotor bushing 3 and the rotor 1 are connected by additional bolts 6, the fastening force between them is not strong enough, resulting in a decrease in the stability of the rotor 1

Method used

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Embodiment Construction

[0022] The technical essence of the present invention is that a rotor for use in an outer rotor type commutatorless DC motor is made to have a simple structure which is optimal in terms of strength and function of the rotor. Therefore, the manufacturing cost of the rotor can be reduced, and the rotational power can be stably transmitted.

[0023] The rotor according to the invention having these advantages is in image 3 shown in .

[0024] The rotor 10 of the outer rotor type motor according to the present invention is integrally formed to have a cylindrical shape by extruding an iron material. After the extrusion process, the substructure of the rotor 10 is formed by simple subsequent processing.

[0025] Specifically, the engagement hole 12 is formed in the base portion 18 of the extruded cylindrical rotor 10 in a subsequent process for forming the substructure.

[0026] Then, a polygonal shaft bush 30 for preventing loss of rotational power of the shaft is press-fitted ...

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Abstract

An outer rotor type motor provides a rotor of an outer rotor type motor with an optimal and simple structure that can be assembled easily. A rotation shaft is supported in a bearing housing and a stator is formed of a field winding. A rotor disposed outside the stator to house the stator therein, has a yoke surface on which a permanent magnet for performing a magnetic interaction with the filed winding of the stator is installed. The rotor rotates around the stator. A shaft bushing connects the rotor and the rotation shaft. The shaft bushing to be fastened to a central portion of the rotor is formed to have a polygonal shape to prevent a loss of a rotary power of the rotation shaft and has an insulation member for an electrical insulation of the motor.

Description

technical field [0001] The present invention relates to a rotor of an outer rotor type motor; and more particularly, to a rotor for an outer rotor type motor used in a drum type washing machine, wherein the manufacture and assembly of the rotor is simple, thereby improving productivity. Background technique [0002] Regarding various driving methods for a motor, there is a motor type driven by induced electromotive force (hereinafter, this motor type will be referred to as an induction motor). This induction motor is a type of AC motor in which rotational power is produced by the interaction between a rotating magnetic field produced in the stator and an induced magnetic field produced in the rotor. Also, this induction motor has a rotating magnetic field type. [0003] The induction motor can be designed in various ways, that is, it can be designed as a three-phase induction motor, a three-phase winding type induction motor, etc., and a single-phase induction motor. It is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/30H02K11/00H02K1/27
CPCH02K1/30H02K1/2786H02K7/003H02K1/2791H02K15/03D06F37/304H02K1/28H02K21/22
Inventor 韩承镕
Owner DAEWOO ELECTRONICS CO LTD