JPS59149478U

JPS59149478U - Flat type brushless motor

Info

Publication number: JPS59149478U
Application number: JP4171483U
Authority: JP
Inventors: 佐伯　康雄; 浦川　隆男; 真也幸野
Original assignee: 松下電器産業株式会社
Priority date: 1983-03-22
Filing date: 1983-03-22
Publication date: 1984-10-05

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：従来の偏平型ブラッシレスモータの縦断面図、
第２図：第１図のモータのステータの平面図、第３図：
トルクリップルとコギングとの関係図、第４Ｎ：本考案
の実施例の縦断面図、第５　　　゛図二本考案の磁性体
板の斜視図、第６図：磁性体板の孔と駆動コイルとの相
対位置を示す図。１・・・回転軸、２・・・駆動マグネット、３・・・ロ
ータヨーク、４・・・ボス、５・・・駆動コイル、６・
・・基板、７・・・ステータヨーク、８・・・軸受、９
・・・磁気検出素子、１０．１１・・・磁性体板、１２
・・・孔、１３・・・中心孔。第３図０転角（ｂ）−尋第５図１と　１２ｂFigure 1: Longitudinal cross-sectional view of a conventional flat brushless motor.
Figure 2: Plan view of the stator of the motor in Figure 1, Figure 3:
Relationship diagram between torque ripple and cogging, Figure 4N: Longitudinal sectional view of the embodiment of the present invention, Figure 5.2 Perspective view of the magnetic plate of the present invention, Figure 6: Hole in the magnetic plate and drive coil. The figure which shows the relative position of. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Drive magnet, 3... Rotor yoke, 4... Boss, 5... Drive coil, 6...
... Board, 7... Stator yoke, 8... Bearing, 9
... Magnetic detection element, 10.11 ... Magnetic plate, 12
...hole, 13...center hole. Figure 3 0 angle (b) - fathom Figure 5 1 and 12b

Claims

[Scope of utility model registration request]

A ring-shaped rotor yoke to which a ring-shaped drive magnet magnetized in the axial direction is attached is fixed to a rotating shaft to constitute a rotor, and a ring-shaped rotor yoke is fixed to a rotating shaft, and a ring-shaped rotor yoke is attached to a substrate on which a drive coil is fixed at a position facing the magnetic pole surface of the drive magnet. In the structure in which a stator yoke is attached to form a stator, the stator yoke is composed of a magnetic plate having a plurality of holes for generating cogging, and a magnetic plate forming a magnetic circuit. Flat brushless smoke.