External-rotor brushless motor system

A technology of brushless motor and external rotor, which is applied in the direction of electronically commutated motor control, control system, synchronous motor with stationary armature and rotating magnet, etc. It can solve the problem of increased friction, damage to the motor, slow speed, etc. Problems, achieve the effect of reducing product cost, good versatility, easy mass production and management

Inactive Publication Date: 2011-10-19
黎冬阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using this motor, the mechanical equipment needs to be installed above the central shaft of the motor to press the rotating central shaft, causing increased friction, slowing down the speed and damaging the motor, etc.

Method used

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  • External-rotor brushless motor system
  • External-rotor brushless motor system
  • External-rotor brushless motor system

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Embodiment Construction

[0014] In order to better understand the technical solutions of the present invention, the embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0015] The present invention provides an outer rotor brushless motor system, such as figure 1 , figure 2 , image 3 As shown, it includes: an outer rotor brushless motor unit 10 and a driver 20, wherein:

[0016] The outer rotor brushless motor unit 10 includes: a central shaft 11, a bearing 12, a housing 13, a permanent magnet 14, a stator armature 15 and a power cord 18;

[0017] One end of the central shaft 11 passes through the center of the bearing 12 , the bearing 12 is fixed on one end of the housing 13 , and the bearing 12 can rotate around the central shaft 11 .

[0018] The inner wall of the housing 13 is fixed with a permanent magnet 14, and the permanent magnet 14 is generally a magnet or a magnet.

[0019] The central shaft 11 passes through t...

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PUM

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Abstract

The invention provides an external-rotor brushless motor system which comprises an external-rotor brushless motor unit and a driver. The external-rotor brushless motor unit comprises: a center shaft, housing, bearings, a permanent magnet, a stator armature, a rear cover, a fixed plate and a power line which is connected with the stator armature. The driver comprises: an integrated power module, a microprocessor unit, a rotor position sensing circuit, a power supply processing circuit, an input/output interface circuit and a current sensing circuit. When the external-rotor brushless motor provided in the invention is working, the center shaft is immovable and the housing is rotated. Machinery equipment is directly arranged on the housing, and rotation of the machinery equipment is driven by the rotation of the housing. In the prior art, the center shaft is regarded not only as a connection between the machinery equipment but also as an output of moment. The rotation can be affected when the machinery equipment is not concentric or there is an external force so that functions of the motor can be decreased. In the invention, the above situations can be avoided.

Description

technical field [0001] The invention relates to the technical field of motor equipment, in particular to an outer rotor brushless motor system. Background technique [0002] Existing outer rotor brushless motors all have a shell to drive the central shaft to rotate, and this motor generally uses the central shaft to drive mechanical equipment. The Chinese invention patent application number is: CN200610037479.1, and the patent named "a DC brushless motor system" discloses a DC brushless motor system, which consists of a DC brushless motor unit 1 and a controller unit 2, wherein: A) The DC brushless motor unit includes a stator assembly, a permanent magnet rotor assembly magnetically coupled with the stator assembly, a housing supporting and installing the stator assembly and the permanent magnet rotor assembly, an end cover installed at the end of the housing, and a shaft extension of the permanent magnet rotor assembly The end cover at the top; B) The controller unit inclu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/00H02K11/00H02K5/16H02P6/00
CPCH02K21/22H02K5/225H02K7/003H02K11/33
Inventor 黎冬阳
Owner 黎冬阳
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