JPS6310778U

JPS6310778U -

Info

Publication number: JPS6310778U
Application number: JP10456286U
Authority: JP
Priority date: 1986-07-08
Filing date: 1986-07-08
Publication date: 1988-01-23

Description

[Brief explanation of the drawing]

第１図は本考案になるステツプモータの一実施
例の断面図、第２図は従来のステツプモータの一
例の断面図、一部切截斜視図、第３図は第１図示
の内側ヨークの一実施例の斜視図、第４図、第５
図夫々は第１図示の外側ヨークの各実施例の斜視
図である。２０……マグネツト、２２……軸、２３ａ，２
３ｂ……内側ヨーク、２４ａ……内側磁極片、２
５ａ……切欠、２６ａ，２６ｂ……外側ヨーク、
２７……軸受保持部、２８ａ……外側磁極片、２
９ａ……開口、３０ａ，３０ｂ……コイルボビン
、３１ａ，３１ｂ……コイル、３２ａ，３２ｂ…
…固定子、３４……軸受。 Fig. 1 is a cross-sectional view of an embodiment of the step motor according to the present invention, Fig. 2 is a cross-sectional view and partially cutaway perspective view of an example of a conventional step motor, and Fig. 3 is a cross-sectional view of an example of a conventional step motor. Perspective views of one embodiment, FIGS. 4 and 5
Each figure is a perspective view of each embodiment of the outer yoke shown in the first figure. 20...Magnet, 22...Shaft, 23a, 2
3b...Inner yoke, 24a...Inner magnetic pole piece, 2
5a...notch, 26a, 26b...outer yoke,
27...bearing holding part, 28a...outer magnetic pole piece, 2
9a...Opening, 30a, 30b...Coil bobbin, 31a, 31b...Coil, 32a, 32b...
...Stator, 34...Bearing.

Claims

[Scope of utility model registration request]

A step motor consists of a rotor that has alternately different polarities in the circumferential direction and is magnetized in the direction perpendicular to the axis, and a pair of stators that have a plurality of magnetic pole pieces arranged facing each other around the outer periphery of the rotor. Each of the pair of stators is connected to a cylindrical coil bobbin, an insulated inner yoke having a plurality of inner magnetic pole pieces inserted into the coil bobbin, and a state in which the stator is inserted into the coil and meshed with the plurality of inner magnetic pole pieces. It is composed of an insulated outer yoke having a plurality of outer magnetic pole pieces and a coil wound around the coil bobbin using the inner yoke and the outer yoke as flanges of the coil bobbin. fixing the inner yokes together;
A step motor comprising one of the pair of stators holding a bearing that supports the shaft of the rotor.