JPS62191376U

JPS62191376U -

Info

Publication number: JPS62191376U
Application number: JP7913286U
Authority: JP
Priority date: 1986-05-26
Filing date: 1986-05-26
Publication date: 1987-12-05

Description

[Brief explanation of the drawing]

第１図はこの考案にかかるステツプモータの一
実施例をあらわす分解斜視図、第２図は前記実施
例の断面図、第３図ａ，ｂは前記実施例を構成す
るステータヨークをあらわす正面図および側面断
面図、第３図ｃ，ｄは前記実施例を構成する非磁
性体スペーサをあらわす正面図および側面断面図
、第４図前記実施例の動作説明図、第５図ａ，ｂ
は異なるコイルに印加されるパルスの波形図、第
６図はこの考案にかかるステツプモータに駆動回
路が実装されている他の実施例をあらわす断面図
、第７図はこの考案にかかるステツプモータの駆
動させるのに必要な回路の説明図、第８図は従来
のステツプモータの分解斜視図、第９図は第８図
にあらわされているステツプモータの断面図であ
る。１，１９……ステツプモータ、３，２６……ロ
ータ、４，２９……非磁性体スペーサ（リング）
、５，５′……ステータ、６，６′……ステータ
ヨーク、７，７′，２０……コイル、８……磁極
部、１１，３２……凸部、１２，３０……凹部。 FIG. 1 is an exploded perspective view showing an embodiment of the step motor according to this invention, FIG. 2 is a sectional view of the embodiment, and FIGS. 3a and 3b are front views showing the stator yoke constituting the embodiment. 3c and d are front views and side sectional views showing the non-magnetic spacer constituting the embodiment, FIG. 4 is an explanatory view of the operation of the embodiment, and FIGS. 5a and b
6 is a waveform diagram of pulses applied to different coils, FIG. 6 is a cross-sectional view showing another embodiment in which a drive circuit is implemented in a step motor according to this invention, and FIG. 7 is a diagram of a step motor according to this invention. 8 is an exploded perspective view of a conventional step motor, and FIG. 9 is a sectional view of the step motor shown in FIG. 8. 1, 19...Step motor, 3, 26...Rotor, 4, 29...Non-magnetic spacer (ring)
, 5, 5'... stator, 6, 6'... stator yoke, 7, 7', 20... coil, 8... magnetic pole part, 11, 32... convex part, 12, 30... recessed part.

Claims

[Scope of utility model registration request]

The rotor has a magnetic pole section in which a large number of opposing magnetic poles are arranged alternately in the circumferential direction, and two stator yokes in which a large number of stators are arranged in the circumferential direction sandwich the non-magnetic spacer between the magnetic pole sections. In a step motor, which is arranged at intervals on both sides in the axial direction, and whose rotor is rotated when these stators are excited by a coil, either the non-magnetic spacer or the stator yoke One of the stator yokes is provided with a convex portion and the other is provided with a concave portion, and by fitting the convex portion and the concave portion, circumferential positioning of the stator of each of the two stator yokes is performed. A step motor characterized by: