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Permanent magnetic DC brushless motor

A brushless motor, permanent magnet DC technology, applied in the field of permanent magnet DC brushless motor, can solve the problems of insufficient magnetic steel installation, poor detection accuracy, short detection distance, etc. The effect of detection accuracy

Pending Publication Date: 2017-04-05
ZHEJIANG CHAOQIANG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnetic steel in the above technical solution is fixed in the magnetic steel base, and the Hall element is located on the inner side of the magnetic steel for detection. This inner detection method has a short detection distance and poor detection accuracy.
Moreover, the installation of the magnetic steel is not firm enough, and it is easy to fall off

Method used

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  • Permanent magnetic DC brushless motor
  • Permanent magnetic DC brushless motor
  • Permanent magnetic DC brushless motor

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Embodiment Construction

[0020] The following description and drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of embodiments of the present invention includes the full scope of the claims, and all available equivalents of the claims. These embodiments of the present invention may be referred to herein, individually or collectively, by the term "invention", which is for convenience only and is not intended to automatically limit the application if in fact more than one invention is disclosed The scope is any single inventive concept.

[0021] Now illustrate in conjunction with accompanying drawing, Figure 1 to Figure 3 Shown are some optional e...

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Abstract

The invention provides a permanent magnetic DC brushless motor, including a housing, a stator and a rotor. The stator and the rotor are arranged in the housing. The end cover of the housing recesses inwardly to form a cavity. The cavity is internally provided with a Hall sensor. The Hall sensor comprises a flat type magnetic tile disc, and an integral magnetic tile and paster Hall elements installed on the magnetic tile disc. The magnetic tile disc is provided with fixing grooves, the magnetic tile is provided with fixing pins, the fixing pins are inserted in the fixing grooves, and the Hall elements are close to the top surface of the magnetic tile. The magnetic tile and the magnetic tile disc are fixed through the fixing pins and the fixing grooves, the fixing structure is firm, and the falling phenomenon is prevented. The Hall elements are positioned on the top surface of the magnetic tile, the detection distance is increased, and the detection precision is improved.

Description

technical field [0001] The invention relates to a permanent magnet DC brushless motor, in particular to a permanent magnet DC brushless motor with a Hall sensor. Background technique [0002] The permanent magnet brushless DC motors in the prior art are generally equipped with Hall sensors, the magnetic poles of the magnetic tiles in the Hall sensors correspond to the magnetic poles of the rotor, and the magnetic poles are detected by Hall elements. Therefore, there are many technologies for the installation of the magnetic tiles and Hall elements in the Hall sensor, for example, the utility model patent with the Chinese patent number ZL201120283698. The DC brushless motor includes: a stator and a rotor are arranged in the motor housing, a winding coil is arranged on the stator iron core, a magnetic core made of disc-shaped steel sheets is arranged on the rotor shaft, and rotor magnetic tiles are fixed on the periphery of the magnetic core. The motor is provided with a posi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/08
Inventor 林玲龙
Owner ZHEJIANG CHAOQIANG MACHINERY