JPS60128479U

JPS60128479U - One-phase energized disc-type plasticless motor

Info

Publication number: JPS60128479U
Application number: JP1304284U
Authority: JP
Inventors: 雄三瀬尾; 学白木
Original assignee: 高橋　義照; 三菱化学株式会社
Priority date: 1984-01-31
Filing date: 1984-01-31
Publication date: 1985-08-29

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図及び第２図は一相通電されるコアレスタイプのブ
ラシレスモータにおいて従来のコギングトルクを発生さ
せる方法の説明図、第３図は第２図の場合の停止位置の
説明図、第４図は第２図の場合の死点付近のコギングト
ルクの説明図、第５図は本考案の一実施例として示すコ
アレスタイプの一相通電されるディスク型ブラシレスフ
ァンモータの平面図、第７図は第６図の縦断面図、第８
図は第７図の固定子側を拡大した縦断面図、第９図はス
テータ電機子の平面図、第１０図乃至第１３図はステー
タヨークの形成方法例及び鉄粉等の磁性粉を混入したプ
ラスチック粉等の非磁性体粉によって形成した磁性材の
説明図である。２・・・界磁マグネット、４．４−１．４−２・・・空
心型電機子コイル、２３・・・ステータヨーク、２４・
・・位置検知素子、２５・・・コギング発生用磁性体、
２６．２６Ａ・・・鉄粉、２７・・・プラスチック粉、
２７Ａ・・・絶縁微粒混合物。第２図ｊ　　ｂ　　　　　４５第４図　　− 第１２図２６゜ □ｊ −≧；−く＝＝：〉Figures 1 and 2 are explanatory diagrams of the conventional method of generating cogging torque in a coreless type brushless motor that is energized in one phase, Figure 3 is an explanatory diagram of the stop position in the case of Figure 2, and Figure 4 is an explanatory diagram of the cogging torque near the dead center in the case of FIG. 2, FIG. 5 is a plan view of a coreless type single-phase energized disk type brushless fan motor shown as an embodiment of the present invention, and FIG. Longitudinal sectional view of Fig. 6, No. 8
The figure is an enlarged vertical cross-sectional view of the stator side of Figure 7, Figure 9 is a plan view of the stator armature, and Figures 10 to 13 are examples of how to form the stator yoke and mixing magnetic powder such as iron powder. FIG. 2 is an explanatory diagram of a magnetic material formed from non-magnetic powder such as plastic powder. 2... Field magnet, 4.4-1.4-2... Air-core armature coil, 23... Stator yoke, 24...
...Position detection element, 25...Magnetic material for cogging generation,
26.26A...Iron powder, 27...Plastic powder,
27A...Insulating fine particle mixture. Fig. 2j b 45 Fig. 4 - Fig. 12 26゜□j -≧;-ku==:〉

Claims

[Scope of utility model registration request]

A 2P (P is a positive integer of 2 or more) pole field magnet having N and S magnetic poles alternately is provided as a rotor, and a conductor contributing to the generated torque is provided at a stationary side position facing the field magnet. An air-core armature coil having a width substantially equal to the magnetic pole width of the field magnet, a magnetic body for cogging generation and a position detection element having a width substantially equal to the magnetic pole width of the field magnet are arranged. and the center line of the cogging generating magnetic body is located at a distance of approximately three-quarters of the width of the magnetic pole of the field magnet from the conductor portion contributing to the generated torque of the armature coil. In the disc-type brushless motor with single-phase energization, the cogging-generating magnetic material is simultaneously formed when the stator yoke is integrally formed with non-magnetic powder such as plastic powder mixed with powder such as iron powder. A disk type brushless motor that is energized in one phase, characterized in that the stator yoke is formed so as to protrude from a surface facing a field magnet of the stator yoke.