JPS61134684U

JPS61134684U -

Info

Publication number: JPS61134684U
Application number: JP1676485U
Authority: JP
Priority date: 1985-02-08
Filing date: 1985-02-08
Publication date: 1986-08-22

Description

[Brief explanation of the drawing]

第１図は本考案永久磁石式ステツピングモータ
の位置実施例を示す縦断面図、第２図は部品分解
斜視図である。１〜外ヨーク、１ａ〜中空部、１ｂ〜天壁部、
１ｃ〜筒状部、２〜磁極歯、３〜内ヨーク、３ａ
〜中空部、３ｂ〜孔、３ｃ〜基盤部、４〜磁極歯
、５〜電磁コイル、６〜仕切板、６ａ〜中空部、
６ｂ〜固定用筒足、８〜軸、９〜軸受、１１〜軸
受支承板、２０〜回転子、２１〜中空部。 FIG. 1 is a longitudinal sectional view showing an embodiment of the permanent magnet type stepping motor of the present invention, and FIG. 2 is an exploded perspective view of the parts. 1 - outer yoke, 1a - hollow part, 1b - ceiling wall part,
1c~cylindrical part, 2~magnetic pole tooth, 3~inner yoke, 3a
- hollow part, 3b - hole, 3c - base part, 4 - magnetic pole tooth, 5 - electromagnetic coil, 6 - partition plate, 6a - hollow part,
6b - fixing cylinder leg, 8 - shaft, 9 - bearing, 11 - bearing support plate, 20 - rotor, 21 - hollow part.

Claims

[Claims for Utility Model Registration] Disc-shaped non-magnetic partition plate 6 having a hollow portion 6a
A plurality of fixing cylindrical legs 6b, 6b are provided protrudingly on both surfaces of the partition plate 6, and the fixing cylindrical legs 6b, 6b penetrate through a base portion 3c having a hollow portion 3a on both upper and lower surfaces of the partition plate 6. An inner yoke 3 is formed by opening holes 3b, 3b, and having magnetic pole teeth 4, 4, 4, . , 3, and the back side of the base portion 3c is connected to the partition plate 6.
These inner yokes 3, 3 are eyeleted to the partition plate 6 by means of fixing cylinder feet 6b, 6b passing through the holes 3b, 3b, and furthermore, on both upper and lower sides of the partition plate 6, , has a cylindrical portion 1c having approximately the same diameter as the partition plate 6, and a top wall portion 1b provided with a hollow portion 1a, and the inner peripheral portion of the top wall 1b is provided with the above-mentioned magnetic pole teeth 4, 4, 4, . . . a yoke 1 with magnetic pole teeth 2, 2, 2... protruding inward so as to be located between the yoke 1;
1 are connected to each other with the opening sides of the cylindrical portion 1c facing each other, and an electromagnetic coil 5 is provided between the magnetic pole teeth 4, 4, 4... of the outer yokes 1, 1 and the cylindrical portion 1c, respectively. A rotor is contained in a hollow portion 21 formed between the magnetic pole teeth 2, 2, 2... of both outer yokes 1, 1 and the magnetic pole teeth 4, 4, 4... of both inner yokes 3, 3. Further, on the outer surface side of the top wall portion 1b of both outer yokes 1, 1, there is a bearing 9 for supporting the shaft 8 of the rotor 20.
A permanent magnet type stepping motor having bearing support plates 11, 11 fixed to each other.