JPH02125581U

JPH02125581U -

Info

Publication number: JPH02125581U
Application number: JP3510989U
Authority: JP
Priority date: 1989-03-28
Filing date: 1989-03-28
Publication date: 1990-10-16

Description

[Brief explanation of drawings]

第１図は本考案の実施例１を示す断面図、第２
図は同上の分解断面図、第３図は同上の平面図、
第４図は本考案の実施例２を示す断面図、第５図
は同上の分解断面図、第６図は本考案の実施例３
を示す断面図、第７図は従来例を示す断面図であ
る。１……ロータ、２……ステータ、３……ハウジ
ング、１１……回転軸、１２……円板状磁石、２
１……磁極子、２１ａ……筒体、２２……磁極、
２３……軸受、２４……鉄芯、２４ａ……段部、
２６……コイル。 Fig. 1 is a sectional view showing the first embodiment of the present invention;
The figure is an exploded sectional view of the same as above, and Figure 3 is a plan view of the same as above.
Fig. 4 is a sectional view showing a second embodiment of the present invention, Fig. 5 is an exploded sectional view of the same as the above, and Fig. 6 is a sectional view of a third embodiment of the present invention.
FIG. 7 is a sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Rotor, 2... Stator, 3... Housing, 11... Rotating shaft, 12... Disk-shaped magnet, 2
1... Magnetic pole piece, 21a... Cylindrical body, 22... Magnetic pole,
23...Bearing, 24...Iron core, 24a...Step,
26...Coil.

Claims

[Claims for Utility Model Registration] (1) A rotor in which a disc-shaped magnet having a plurality of magnetic poles in the direction of rotation is attached to a rotating shaft, and a magnetic pole piece having a plurality of magnetic poles facing the magnetic poles of the disc-shaped magnet. and a stator equipped with a coil that excites the magnetic pole pieces so that the rotor rotates in stages, the coil being arranged around a cylindrical iron core through which the rotating shaft is inserted, A stepping motor in which the magnetic pole piece is press-fitted into an iron core and is integrally formed with a bearing that rotatably holds the rotating shaft. (2) The rotor has a rotor in which a disc-shaped magnet having multiple magnetic poles in the rotation direction is attached to the rotating shaft, and a magnetic pole piece with multiple magnetic poles facing the magnetic poles of the disc-shaped magnet, and the rotor rotates in stages. In a stepping motor, the stepping motor includes a stator equipped with a coil that excites the magnetic pole pieces to rotate, and the coil is arranged around a cylindrical iron core that rotatably holds the rotating shaft. A stepping motor consisting of magnetic poles connected together. (3) The stepping motor according to claim 2, wherein the magnetic pole piece is formed integrally with an end portion of an iron core.