JPS6113575U

JPS6113575U - Disc type brushless motor

Info

Publication number: JPS6113575U
Application number: JP7211485U
Authority: JP
Inventors: 紀光平野
Original assignee: 高橋義照
Priority date: 1985-05-15
Filing date: 1985-05-15
Publication date: 1986-01-27

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案の一実施例としてのディスク型、ブラシ
レスモータをディスク型ブラシレスファンモータ用に形
成したものの縦断面図、第２図及び第３図は第１図の特
殊磁性体としての磁性体ヨークの形成方法の説明図、第
４図は電機子コイル群の配設方法の一実施例を示す平面
図、第５図は、電機子コイルと界磁マグネット及び位置
決め用磁性体との展開図、第６図は界磁マグネットの平
面図、第７図は磁性体ヨークの下面図、第８図は第４図
のものと第７図のものを兼ね合わせたものの説明図、第
９図は一実施例としての通電制御回路、第１０図は一例
としてのファン付カップ体の斜視図、第１１図は一例と
してのディスク型ブラシレスファンモータ本体の斜視図
である。Fig. 1 is a longitudinal cross-sectional view of a disk-type brushless motor formed for a disk-type brushless fan motor as an embodiment of the present invention, and Figs. 2 and 3 show the magnetic properties of the special magnetic material shown in Fig. 1. FIG. 4 is a plan view showing an example of the method of arranging the armature coil group, and FIG. 5 is a diagram showing the development of the armature coil, field magnet, and positioning magnetic body. Fig. 6 is a plan view of the field magnet, Fig. 7 is a bottom view of the magnetic yoke, Fig. 8 is an explanatory diagram that combines the one in Fig. 4 and the one in Fig. 7, and Fig. 9 10 is a perspective view of a fan-equipped cup body as an example, and FIG. 11 is a perspective view of a disk type brushless fan motor body as an example.

Claims

[Claims for Utility Model Registration] (1) In a disk-type brushless motor with one position sensing element, a 2n (n is a positive integer of 2 or more) pole field magnet having alternating N and S poles. Let be the rotor,
An armature consisting of one or more armature coils is fixedly installed on the stationary side facing the field magnet, and the field is A disc-type brushless motor in which one or more positioning magnetic bodies are provided at a position in front of the magnet in the rotational direction. (2) The disk-type brushless motor according to claim 1 (1), in which the positioning magnetic body is provided on a side surface that contributes to the generated torque of the armature coil. (3) The positioning magnetic body is A day long brushless motor according to claim 1 or 2 of the utility model registration claim, wherein the armature coil is protruded from the armature coil arrangement surface. (4) the positioning magnetic body is a magnet;
A disc-type brushless motor according to claim (3) of the utility model registration. (5) The disc-type brushless motor according to claim 1 or 2, wherein the positioning magnetic body is formed by cutting out the stator yoke on the lower surface of the armature coil group. ((6) The above-mentioned armature is composed of a group of air-core armature coils wound in a frame shape. Claim No.
The disc-type brushless motor according to any one of items (5) to (5). (7) The disc-type brushless motor according to claim (1), wherein the armature coil groups are arranged so as not to overlap each other. (8) The armature coil is wound so that the opening angle width of the conductor portion contributing to the generated torque is an odd number multiple of the magnetic pole width of the field magnet. The disc-type brushless motor according to item (7).