JPS61129473U

JPS61129473U -

Info

Publication number: JPS61129473U
Application number: JP1235285U
Authority: JP
Priority date: 1985-01-31
Filing date: 1985-01-31
Publication date: 1986-08-13

Description

[Brief explanation of the drawing]

第１図、第２図、第３図ａ、第３図ｂ、及び第
３図ｃは、本考案に係るデイスク型ブラシレスモ
ータのロータの構造を示す図面であり、第１図は
分解斜視図、第２図は拡大半断面図、第３図ａは
、ロータが静止しているときの状態を示す説明図
、第３図ｂはロータが約４０°回転したときの状
態を示す説明図、第３図ｃはロータが約８５°回
転したときの状態を示す説明図である。１……ロータ、１ａ……Ｎ磁極部、１ｂ……無
着磁部、１ｃ……Ｓ磁極部、２……フアン、３…
…回転軸、４……ケース、５……ヨーク、７……
ベース、７ａ……挾持部、７ｂ……軸受ハウジン
グ、７ｃ……突出部、８……コイル、９……鉄片
、１０……磁電変換素子、１１……絶縁体、１２
……ボビン。 1, 2, 3a, 3b, and 3c are drawings showing the structure of a rotor of a disc-type brushless motor according to the present invention, and FIG. 1 is an exploded perspective view. , FIG. 2 is an enlarged half-sectional view, FIG. 3 a is an explanatory diagram showing the state when the rotor is stationary, and FIG. 3 b is an explanatory diagram showing the state when the rotor is rotated by about 40 degrees. FIG. 3c is an explanatory diagram showing the state when the rotor has rotated approximately 85 degrees. 1...Rotor, 1a...N magnetic pole part, 1b...Non-magnetized part, 1c...S magnetic pole part, 2...Fan, 3...
...Rotating shaft, 4...Case, 5...Yoke, 7...
Base, 7a... Holding part, 7b... Bearing housing, 7c... Projection, 8... Coil, 9... Iron piece, 10... Magnetoelectric conversion element, 11... Insulator, 12
...Bobbin.

Claims

[Scope of utility model registration request]

A rotor structure for a disc-type brushless motor, characterized in that it has an N magnetic pole part and a non-magnetized part on one surface, and an S magnetic pole part and a non-magnetized part on the other surface alternately.