JPH0233590U

JPH0233590U -

Info

Publication number: JPH0233590U
Application number: JP11234788U
Authority: JP
Priority date: 1988-08-26
Filing date: 1988-08-26
Publication date: 1990-03-02

Description

[Brief explanation of drawings]

第１図ａは本考案の実施例１に用いるケース蓋
の要部断面図、第１図ｂは同上に用いるケース蓋
の展開図、第２図ａは本考案の実施例２の要部平
面図、第２図ｂは同図ａのＸ―Ｘ線断面図、第２
図ｃは同図ａのＹ―Ｙ線断面図、第２図ｄは同図
ａのＺ―Ｚ線断面図、第３図は同上の要部断面図
、第４図は本考案に係るステツプモータを示す断
面図、第５図は同上の分解斜視図、第６図ａ，ｂ
はそれぞれ従来の磁極リングを示す平面図と側面
図、第７図ａ，ｂはそれぞれ従来のケース蓋を示
す平面図と側面図、第８図は従来例における磁極
リングとケース蓋とを結合した状態を示す断面図
である。１０…回転子、１１…回転子磁石、２０…固定
子、２１…ステータコイル、２２…磁極片、３０
…ハウジング、３１…ケース本体、３２…ケース
蓋。 Figure 1a is a sectional view of the main part of the case lid used in the first embodiment of the present invention, Figure 1b is a developed view of the case lid used in the above, and Figure 2a is a plan view of the main part of the second embodiment of the present invention. Figure 2b is a sectional view taken along line X--X of figure a,
Figure c is a sectional view taken along the line Y--Y of Figure a, Figure 2 d is a sectional view taken along the Z-Z line of Figure a, Figure 3 is a sectional view of the main parts of the same, and Figure 4 is a step according to the present invention. A sectional view showing the motor, Figure 5 is an exploded perspective view of the same as above, Figures 6a and b
7A and 7B are plan views and side views respectively showing a conventional magnetic pole ring, FIG. 7A and FIG. It is a sectional view showing a state. DESCRIPTION OF SYMBOLS 10... Rotor, 11... Rotor magnet, 20... Stator, 21... Stator coil, 22... Magnetic pole piece, 30
...Housing, 31...Case body, 32...Case lid.

Claims

[Claims for Utility Model Registration] (1) A rotor magnet in which a plurality of magnetic poles formed in a disc shape and magnetized so that both sides in the thickness direction have different polarities arranged in the rotation direction, and a plurality of stators The magnetic poles on each side of the coil are arranged spaced apart in the rotational direction so as to face one surface in the thickness direction of the rotor magnet, and the plurality of magnetic pole pieces are rotated in such a manner that they face the other surface in the thickness direction of the rotor magnet. In a stepping motor, the housing includes a case main body, which is formed into a bottomed cylindrical shape with one side open, and the other magnetic pole of the stator coil is magnetically coupled to the bottom plate; It is formed by a case lid made of a magnetic material that is fitted so as to close the opening surface of the main body, and the above-mentioned magnetic pole piece is integrally provided on the periphery of the case lid so as to overlap in the thickness direction of the case lid. stepping motor. (2) Rotating a rotor magnet in which a plurality of magnetic poles formed in a disk shape and magnetized so that both sides in the thickness direction have different polarities are arranged in the rotation direction, and one magnetic pole of each of the plurality of stator coils. A fixing device in which a plurality of magnetic pole pieces are arranged so as to face one surface in the thickness direction of the child magnet and spaced apart in the rotation direction, and a plurality of magnetic pole pieces are arranged so as to face the other surface in the thickness direction of the rotor magnet, spaced apart in the rotation direction. In a stepping motor, the other magnetic pole of the stator coil and the magnetic pole piece are magnetically coupled via a housing made of a magnetic material, and the housing is formed into a bottomed cylindrical shape with one side open. The other magnetic pole is magnetically coupled to the bottom plate, and the case lid is made of a magnetic material that is fitted to close the opening surface of the case body. A stepping motor in which the magnetic pole pieces are provided in a protruding manner in a manner that they are punched out toward the opposite direction.