JPS62177278U

JPS62177278U -

Info

Publication number: JPS62177278U
Application number: JP6286986U
Authority: JP
Priority date: 1986-04-25
Filing date: 1986-04-25
Publication date: 1987-11-11

Description

[Brief explanation of the drawing]

第１図〜第３図は本考案の一実施例に係るもの
で、第１図はステータコアの部分平面図、第２図
はコギングトルクのトルク曲線図、第３図は励磁
トルクを加えたトルク曲線図、第４図は本考案に
おけるコアの他の実施例を示す部分平面図、第５
図は従来のモータの平面図、第６図は同モータの
トルク曲線図、第７図はコアの他の従来例を示す
部分平面図、第８図は同コアを使用したモータの
トルク曲線図である。１……ステータコア、２……コイル、３……主
突極、４……補助突極、７……ロータ、９……切
欠部、１０……切欠部、１１……切欠部、１２…
…峰部。 Figures 1 to 3 relate to one embodiment of the present invention, where Figure 1 is a partial plan view of the stator core, Figure 2 is a torque curve diagram of cogging torque, and Figure 3 is the torque obtained by adding excitation torque. Figure 4 is a partial plan view showing another embodiment of the core of the present invention; Figure 5 is a curve diagram;
The figure is a plan view of a conventional motor, Figure 6 is a torque curve diagram of the same motor, Figure 7 is a partial plan view showing another conventional example of the core, and Figure 8 is a torque curve diagram of a motor using the same core. It is. DESCRIPTION OF SYMBOLS 1... Stator core, 2... Coil, 3... Main salient pole, 4... Auxiliary salient pole, 7... Rotor, 9... Notch, 10... Notch, 11... Notch, 12...
...Minebe.

Claims

[Scope of utility model registration request]

In a brushless motor equipped with a slotted stator core having an even number of main salient poles around which coils are wound and auxiliary salient poles located between the main salient poles, a plurality of notches are provided on the outer peripheral surface of the main salient poles of the stator core. What is claimed is: 1. A brushless motor characterized in that a notch is provided on the outer circumferential surface of an auxiliary salient pole adjacent to the main salient pole, and a notch is provided on the outer peripheral surface of an auxiliary salient pole adjacent to the main salient pole.