JPS60135072U

JPS60135072U - brushless motor

Info

Publication number: JPS60135072U
Application number: JP2349584U
Authority: JP
Inventors: 森　秀男
Original assignee: 株式会社東芝
Priority date: 1984-02-21
Filing date: 1984-02-21
Publication date: 1985-09-07

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]

第１図乃至第４図は本考案の一実施例を示し、第１図は
一部破断して示す全体の側面区、第２図は基板の斜視図
、第３図は周波数発電用磁石の斜視図、第４図は周波数
発電用磁石の着磁状態を示すための磁束密度の変化図、
第５図は本考案の異なる実施例を示すロータの断面図で
ある。図面中、１は基板（ステータヨーク）、５はステータ、
６はロータ、９は駆動用磁石、９ａは着磁部、１０は周
波数発電用磁石、１０ｂは着磁部、１１はホール素子（
磁束検出素子）、１２は゛爪部である。1 to 4 show an embodiment of the present invention, in which FIG. 1 shows the entire side section partially cut away, FIG. 2 is a perspective view of the board, and FIG. 3 shows the structure of the frequency power generation magnet. A perspective view, FIG. 4 is a change diagram of magnetic flux density to show the magnetized state of the frequency power generation magnet,
FIG. 5 is a sectional view of a rotor showing a different embodiment of the present invention. In the drawing, 1 is a substrate (stator yoke), 5 is a stator,
6 is a rotor, 9 is a driving magnet, 9a is a magnetized section, 10 is a frequency power generation magnet, 10b is a magnetized section, 11 is a Hall element (
(magnetic flux detection element), 12 is a claw portion.

Claims

[Claims for Utility Model Registration] 1. In a rotor in which a driving magnet and a frequency power generation magnet are arranged, a magnetized part for detecting the rotational position of the rotor is provided on the outer periphery of one of the magnets. A brushless motor characterized in that a magnetic flux detection element is disposed opposite to the outer circumference of a magnet having the magnetized portion provided in the stator. 2. The brushless motor according to claim 1, wherein the magnetized portion is provided corresponding to a boundary between different polarities of the magnets. 3. The brushless brushless according to claim 1 or 2 of the utility model registration claim, characterized in that a claw portion formed by bending a part of the stator yoke is located on the demagnet side of the magnetic flux detection element. motor.