JPH01120779U

JPH01120779U -

Info

Publication number: JPH01120779U
Application number: JP1418788U
Authority: JP
Priority date: 1988-02-06
Filing date: 1988-02-06
Publication date: 1989-08-16

Description

[Brief explanation of the drawing]

第１図は本考案の実施例のブラシレスモータの
横断面図、第２図は第１図のブラシレスモータの
ステータコイルの電流波形図、第３図は第１図の
ブラシレスモータのステータコイルの電流と脈動
するトルクの関係を説明する波形図、第４図は従
来のブラシレスモータの縦断面図、第５図は第４
図のブラシレスモータの２つのモータ部のステー
タのスロツトとロータの磁極の関係を示す展開図
、第６図は第４図のブラシレスモータのステータ
コイルの電流波形、第７図は第４図のブラシレス
モータのステータコイルの電流（１相について）
と脈動するトルクの関係を示す波形図である。図において、１…ステータの鉄心（第１又は第
２のステータ）、２…第１のステータのスロツト
、３…第２のステータのスロツト、４…ロータの
磁極（第１又は第２のロータ）、１６…回転軸。 Fig. 1 is a cross-sectional view of a brushless motor according to an embodiment of the present invention, Fig. 2 is a current waveform diagram of the stator coil of the brushless motor of Fig. 1, and Fig. 3 is a current waveform of the stator coil of the brushless motor of Fig. 1. FIG. 4 is a vertical cross-sectional view of a conventional brushless motor, and FIG.
A developed diagram showing the relationship between the stator slots and the magnetic poles of the rotor in the two motor parts of the brushless motor shown in the figure, Figure 6 is the current waveform of the stator coil of the brushless motor shown in Figure 4, and Figure 7 is the brushless motor shown in Figure 4. Motor stator coil current (for 1 phase)
FIG. 3 is a waveform diagram showing the relationship between the torque and the pulsating torque. In the figure, 1... Iron core of stator (first or second stator), 2... Slot of first stator, 3... Slot of second stator, 4... Magnetic pole of rotor (first or second rotor). , 16...Rotation axis.

Claims

[Claims for Utility Model Registration] A brushless motor having first and second rotors mounted in the axial direction on the same rotating shaft, and first and second stators respectively surrounding the two rotors, and a brushless motor, characterized in that the relative positions of the respective slots of the second stator or the relative positions of the respective magnetic poles of the first and second rotors are shifted by a predetermined interval around the rotation axis. motor.