JPS61144783U

JPS61144783U -

Info

Publication number: JPS61144783U
Application number: JP2602185U
Authority: JP
Priority date: 1985-02-25
Filing date: 1985-02-25
Publication date: 1986-09-06

Description

[Brief explanation of drawings]

第１図乃至第１２図は、本考案の一実施例を示
すもので、第１図は、回転子の分解斜視図、第２
図は、回転子ヨークの拡大平面図、第３図は、異
なる回転子ヨークの拡大平面図、第４図は、ステ
ツプ電動機の分解斜視図、第５図は、その断面図
、第６図は、中間ヨークの断面図、第７図は、そ
の平面図、第８図は、固定子の磁極子の拡大斜視
図、第９図は回転子ヨークの歯の展開図、第１０
図は、固定子の磁極子の展開図、第１１図は、一
方のコイル側における各歯の関係を示す説明図、
第１２図は、他方のコイル側における各歯の関係
を示す説明図、である。１…回転子、２…永久磁石、３，４…回転子ヨ
ーク、３ｄ，３ｅ，４ｄ，４ｅ…回転子ヨークの
貫通孔、５…回転子軸、６…固定子、７，８…固
定子ヨーク、１１…中間ヨーク、１２，１３…固
定子ヨークの磁極子、１９，２０…中間ヨーク磁
極子、２２，２３…コイル。 1 to 12 show an embodiment of the present invention, in which FIG. 1 is an exploded perspective view of the rotor, and FIG.
3 is an enlarged plan view of a different rotor yoke, FIG. 4 is an exploded perspective view of the step motor, FIG. 5 is a sectional view thereof, and FIG. 6 is an enlarged plan view of a rotor yoke. , FIG. 7 is a plan view thereof, FIG. 8 is an enlarged perspective view of the magnetic pole piece of the stator, FIG. 9 is a developed view of the teeth of the rotor yoke, and FIG. 10 is a cross-sectional view of the intermediate yoke.
The figure is a developed view of the magnetic pole piece of the stator, and FIG. 11 is an explanatory diagram showing the relationship between each tooth on one coil side.
FIG. 12 is an explanatory diagram showing the relationship between the teeth on the other coil side. 1... Rotor, 2... Permanent magnet, 3, 4... Rotor yoke, 3d, 3e, 4d, 4e... Through hole of rotor yoke, 5... Rotor shaft, 6... Stator, 7, 8... Stator Yoke, 11... intermediate yoke, 12, 13... magnetic pole piece of stator yoke, 19, 20... intermediate yoke magnetic pole piece, 22, 23... coil.

Claims

[Claims for Utility Model Registration] A cylindrical permanent magnet magnetized with N pole on one end and S pole on the other end in the axial direction, and two pieces made of magnetic material with teeth formed at the same pitch on the outer circumferential surface at both ends. Arrange the rotor yokes so that they are offset from each other by 1/2 pitch,
These include a rotor that is integrally fixed to the rotor shaft, and a predetermined number of magnetic pole pieces having teeth formed on the inner circumferential surface with the same pitch as the teeth of the rotor yoke. A step motor comprising a stator disposed to face each other with an air gap interposed therebetween, and a coil wound around the magnetic pole, the step motor sequentially energizing the coil to rotate the rotor in steps, the step motor comprising: The rotor yoke is formed into a cylindrical shape with a bottom, and has the same shape in which a plurality of through holes parallel to the central axis are equidistant from the center of the cylinder and are positioned 1/2 pitch apart from the teeth. The rotor of a step motor.