JPH0339355U

JPH0339355U -

Info

Publication number: JPH0339355U
Application number: JP9803589U
Authority: JP
Priority date: 1989-08-22
Filing date: 1989-08-22
Publication date: 1991-04-16

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す断面図、第２図
はロータの側面図、第３図は永久磁石と両側ヨー
クのクローポールとの関係を示す側面展開図、第
４図はステータ巻線との鎖交磁束を示す特性曲線
図、第５図は従来例におけるクローポールの形状
を示すロータ側面図、第６図はさらに別の従来例
を示す一部断面図である。１……ステータ、２……巻線溝、３……励磁巻
線、４……ロータ、５……回転軸、６……永久磁
石、７，８……ヨーク、９，１０，１５，１６，
１７……クローポールである。 Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a side view of the rotor, Fig. 3 is a side development view showing the relationship between the permanent magnets and the claw poles of both yokes, and Fig. 4 is a stator winding. FIG. 5 is a side view of a rotor showing the shape of a claw pole in a conventional example, and FIG. 6 is a partial sectional view showing yet another conventional example. 1... Stator, 2... Winding groove, 3... Excitation winding, 4... Rotor, 5... Rotating shaft, 6... Permanent magnet, 7, 8... Yoke, 9, 10, 15, 16 ，
17...It's a claw pole.

Claims

[Scope of utility model registration request]

Permanent magnets are arranged with an air gap in an annular stator equipped with windings and are magnetized in the axial direction of the rotating shaft, a yoke that holds this permanent magnet from both sides, and a magnet that is magnetized in the axial direction from the outer periphery of each yoke. In a permanent magnet field type rotor equipped with claw poles corresponding to the number of poles protruding from the stator, the axial dimension of the surface of the claw pole facing the inner periphery of the stator changes sinusoidally in the circumferential direction. Features a permanent magnet field type rotor.