JPS6336171U

JPS6336171U -

Info

Publication number: JPS6336171U
Application number: JP13001586U
Authority: JP
Priority date: 1986-08-26
Filing date: 1986-08-26
Publication date: 1988-03-08

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
例のハウジングにＵ字形ステータ片、コイルおよ
び軸受を組み込んだ状態をステータブロツク側か
らみた平面図、第３図は前記実施例の第２図にお
けるＡ―Ａ′切断位置での断面図、第４図は前記
実施例のハウジングとＵ字形ステータ片とコイル
との斜視図、第５図は前記実施例のピンとこれを
嵌め込む穴との関係をあらわす説明図、第６図は
ロータの動作を説明する説明図、第７図ａ，ｂは
異なる２つのコイルに印加されたパルスの波形図
、第８図はリード線の処理法について改良された
ステツプモータの一例をあらわす分解斜視図、第
９図はその例の組み立て後の状態をあらわす斜視
図、第１０図および第１１図はそれぞれリード線
の処理法について改良されたステツプモータの別
の例をあらわす斜視図、第１２図は従来のステツ
プモータの一例をあらわす斜視図である。１……ロータ、４……円板状磁石（磁極部）、
５……ハウジング、１３……ステータブロツク、
１４……凸状ステータ（第２ステータ）、１７ａ
……Ｕ字形ステータ（第１ステータ）、１９，１
９′……コイル、２５……ピンを嵌め込む穴、２
６……ピン。 Fig. 1 is an exploded perspective view showing one embodiment of the step motor according to this invention, and Fig. 2 is a plan view of the above-mentioned embodiment in which a U-shaped stator piece, a coil, and a bearing are assembled in the housing, as seen from the stator block side. , FIG. 3 is a sectional view taken along the line A-A' in FIG. 2 of the embodiment, FIG. 4 is a perspective view of the housing, U-shaped stator piece, and coil of the embodiment, and FIG. An explanatory diagram showing the relationship between the pin of the embodiment and the hole into which it is fitted, FIG. 6 is an explanatory diagram explaining the operation of the rotor, and FIGS. 7 a and b are waveform diagrams of pulses applied to two different coils. Fig. 8 is an exploded perspective view showing an example of a step motor with an improved method for handling lead wires, Fig. 9 is a perspective view showing the state of the example after assembly, and Figs. 10 and 11 respectively show lead wires. FIG. 12 is a perspective view showing an example of a conventional step motor. 1...Rotor, 4...Disc-shaped magnet (magnetic pole part),
5...Housing, 13...Stator block,
14...Convex stator (second stator), 17a
...U-shaped stator (first stator), 19,1
9′...Coil, 25...Hole for fitting pin, 2
6...Pin.

Claims

[Scope of utility model registration request]

A rotor having a magnetic pole part formed by alternately arranging a large number of opposing magnetic poles in the circumferential direction, a coil, and a first stator disposed in large numbers in the circumferential direction at regular intervals on one side of the magnetic pole part of the rotor. and a stator block provided with a plurality of second stators disposed circumferentially at regular intervals on the other side of the magnetic pole portion of the rotor, the first stator and the second stator In a step motor in which the stator has different polarities due to the excitation of a coil, and the rotor is rotated by changing the excitation state of the coil, a pin is formed on one of the housing and the stator block. and a hole into which the pin is fitted is formed on the other side, and the housing and the stator block are positioned by fitting the pin into the hole, and the housing and the stator block are fitted into the hole. A step motor characterized in that the hole extends in the radial direction longer than the diameter of the pin.