JPS60138376U

JPS60138376U - Disc type brushless motor with frequency generator

Info

Publication number: JPS60138376U
Application number: JP2509584U
Authority: JP
Inventors: 逢坂　政行; 浩西川
Original assignee: 株式会社シコ−技研; ブラザー工業株式会社
Priority date: 1984-02-23
Filing date: 1984-02-23
Publication date: 1985-09-13

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す周波数発電機′を有す
るディスク型ブラシレスモータの縦断面図、第２図は第
１図の部分図、第３図はステータ電機子の平面図、第４
図は一例としての周波数発＼− 電機形成用のくし歯状の導電パターンを形成したプリン
ト基板の平面図、第５図は駆動用磁極及び　　。周波数発電機形成用磁極を着磁形成した界磁マグネシト
の下面図、第６図ａは第５図の界磁マグネットによって
得られる空隙部（微少間隙）の磁束密度波形図１．第６
図すは周波数発電機形成用磁極によって得られる空隙型
の磁束密度波形図、第７図は界磁マグネットの駆動用磁
極と電機子コイル群からなるステータ電機子との展開図
、第８図は本考案の第２実施例を示す駆動用磁極のみの
界磁マグネットの平面図である。４・・・電機子フィル、５・・・ステータ電機子、６・
・・位置検知素子収納用の透孔、７・・・位置検知素子
、　　。９・・・周波数発電機形成用のくし歯状の導電パターン
、１０・・・プリント基板、１５・・・界磁マグネット
、１５ａ・・・駆動用磁極、１５ｂ・・・周波数発電機
形成用磁極。FIG. 1 is a longitudinal cross-sectional view of a disc-type brushless motor having a frequency generator', showing an embodiment of the present invention, FIG. 2 is a partial view of FIG. 1, and FIG. 3 is a plan view of the stator armature. 4
The figure is a plan view of a printed circuit board on which a comb-shaped conductive pattern for forming an electrical machine is formed, as an example of frequency generation, and FIG. FIG. 6a is a bottom view of the field magnet in which the magnetic poles for forming the frequency generator have been magnetized, and FIG. 6th
The figure shows an air gap type magnetic flux density waveform diagram obtained by the magnetic poles for forming a frequency generator, Figure 7 is a developed view of the driving magnetic pole of the field magnet and the stator armature consisting of the armature coil group, and Figure 8 is FIG. 6 is a plan view of a field magnet having only a driving magnetic pole, showing a second embodiment of the present invention. 4... Armature fill, 5... Stator armature, 6...
...Through hole for housing the position detection element, 7...Position detection element. 9... Comb tooth-shaped conductive pattern for forming a frequency generator, 10... Printed circuit board, 15... Field magnet, 15a... Magnetic pole for drive, 15b... Magnetic pole for forming a frequency generator .

Claims

[Scope of utility model registration request]

A frequency generator in which a printed circuit board with a comb-shaped conductive pattern for forming a frequency generator is disposed on the stator armature surface at a position facing the driving magnetic pole of the field magnet or the frequency generator forming magnetic pole. In the disc-type brushless motor having the above, the conductive pattern is formed in a phosphor-like shape having one or more portions where one or more radial power generation line elements are omitted, and the printed circuit board in which the power generation line elements are omitted is formed. A disc-type brushless motor having a frequency generator, characterized in that a through hole for arranging a position detection element is provided in the part thereof.