JPS5923284U

JPS5923284U - brushless motor

Info

Publication number: JPS5923284U
Application number: JP11752582U
Authority: JP
Inventors: 角田　秀夫
Original assignee: 株式会社東芝
Priority date: 1982-08-02
Filing date: 1982-08-02
Publication date: 1984-02-13

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

１１図ａ、ｂ、ｃは従来のブラシレスモータの回転子を
示す斜視図、マグネットの斜視図およびマグネットの正
面図、第２図は上記モータの回転子の磁束分布を示す図
、第３図ａ、　　ｂ、　　ｃは本考案の一実施例の回転
子の斜視図、マグネットの組立斜視図、および回転子の
截断正面図、第４図はブラシレスモータの電気的な接続
を示す回路図、第５図は上記実施例の回転子の磁束分布
を示す図、第６図は本考案の他の実施例のマグネットを
示す組立斜視図である。１１・・・シャフト、１２・・・ヨーク、１３・・・マ
グネット、１４・・・端板、１５・・・磁性金属片。Figures 11a, b, and c are perspective views showing the rotor of a conventional brushless motor, a perspective view of the magnet, and a front view of the magnet; Figure 2 is a diagram showing the magnetic flux distribution of the rotor of the motor; Figure 3a , b, c are a perspective view of a rotor according to an embodiment of the present invention, an assembled perspective view of a magnet, and a cutaway front view of the rotor, FIG. 4 is a circuit diagram showing electrical connections of a brushless motor, and FIG. This figure is a diagram showing the magnetic flux distribution of the rotor of the above embodiment, and FIG. 6 is an assembled perspective view showing a magnet of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 11... Shaft, 12... Yoke, 13... Magnet, 14... End plate, 15... Magnetic metal piece.

Claims

[Scope of utility model registration request]

A device in which the rotational position of a rotor having magnets magnetized in the radial direction is detected by a magnetic sensing element, and a stator coil is selectively excited in accordance with the detection signal to rotationally drive the rotor, at least in the circumferential direction. A brushless motor comprising a rotor having a two-pole magnetized yoke made of an anisotropic ferrite magnet molded into four parts and magnetized, and a magnetic metal piece inserted into the abutting portions of the same polarity of the rotor. .