JPS61478U

JPS61478U - brushless motor

Info

Publication number: JPS61478U
Application number: JP8407384U
Authority: JP
Inventors: 隆石田
Original assignee: セイコ−電子部品株式会社
Priority date: 1984-06-06
Filing date: 1984-06-06
Publication date: 1986-01-06

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 drawings]

第１図は従来のブラシレスモークの平面図。第２図、第３図、第４図はブラシレスモータの起動トル
ク線図。第５図、第６図、第７図、第８図、第９図は本考案実施
例の補極平面図。１・・・磁石、２・・・コイルの巻装された磁極（主極
）、３・・・コイルの巻装されていない磁極（補極）、
７・・・凹部。Figure 1 is a plan view of a conventional brushless smoke. FIG. 2, FIG. 3, and FIG. 4 are starting torque diagrams of the brushless motor. FIG. 5, FIG. 6, FIG. 7, FIG. 8, and FIG. 9 are plan views of the commutator poles of the embodiments of the present invention. 1... Magnet, 2... Magnetic pole with coil wound (main pole), 3... Magnetic pole with no coil wound (complementary pole),
7... Concavity.

Claims

[Scope of utility model registration request]

a magnetized cylindrical rotor; two orthogonal pairs of magnetic poles provided within the cylinder of the rotor and wound with coils;
In a brushless motor equipped with a stator having four magnetic poles in between, a portion or the entire outer circumference of at least one of the four unwound magnetic poles of the coil is removed to eliminate the negative part of the starting torque. A brushless motor, characterized in that the coil is located closer to the center of the core than the outer periphery of the magnetic pole around which the coil is wound, in order to improve starting performance.