JPS62115772U

JPS62115772U -

Info

Publication number: JPS62115772U
Application number: JP150286U
Authority: JP
Priority date: 1986-01-09
Filing date: 1986-01-09
Publication date: 1987-07-23

Description

[Brief explanation of the drawing]

第１図は従来の軸流フアン取り着け方法の説明
図、第２図は第１図の軸流フアンを用いて装置内
の電気部品を冷却する方法の説明図、第３図は本
考案の冷却機構による電気部品を冷却する方法の
一例としての説明図、第４図は本考案の一例とし
ての冷却機構の縦断面図、第５図は第４図の一部
切欠平面図、第６図は一例としてのステータ電機
子の平面図であり、且つスラスト受ベースの配設
位置の説明図、第７図は界磁マグネツトの下面図
である。（符号の説明）、１……軸流フアン、２……角
型ケーシング、３……筐体、４……螺子、５……
基板、６……冷却装置、７……透孔、８……電気
部品、９……電気回路搭載基板、１０……保護ケ
ース、１１……流出孔、１２……流入孔、１３…
…軸受ホルダ取着用透孔、１４……透孔、１５…
…駆動コイル固定板、１６……軸受ホルダ、１６
ａ……鍔、１６ｂ……透孔、１６ｃ……軸受脱出
防止用仕切、１７……スラスト受、１８……スラ
スト受ベース、１９……螺子、２０……駆動コイ
ル、２１……界磁マグネツト、２２ａ，２２ｂ…
…軸受、２３……Ｅリング、２４……回転軸、２
５……回転フアン、２６……回転板、２７……羽
根、２８……ロータヨーク、２９……電気部品、
３０……螺子、３１……切欠部、３１ａ，３１ｂ
……端部、３３……ホール素子（位置検知素子）
。 Figure 1 is an explanatory diagram of a conventional axial flow fan installation method, Figure 2 is an explanatory diagram of a method for cooling electrical components in a device using the axial fan of Figure 1, and Figure 3 is an explanatory diagram of a method for cooling electrical components in a device using the axial fan shown in Figure 1. An explanatory diagram as an example of a method for cooling electrical components using a cooling mechanism, FIG. 4 is a longitudinal sectional view of a cooling mechanism as an example of the present invention, FIG. 5 is a partially cutaway plan view of FIG. 4, and FIG. 6 7 is a plan view of the stator armature as an example, and is an explanatory view of the arrangement position of the thrust receiver base. FIG. 7 is a bottom view of the field magnet. (Explanation of symbols), 1... Axial fan, 2... Square casing, 3... Housing, 4... Screw, 5...
Board, 6... Cooling device, 7... Through hole, 8... Electrical component, 9... Electric circuit mounting board, 10... Protective case, 11... Outflow hole, 12... Inflow hole, 13...
...Through hole for mounting bearing holder, 14...Through hole, 15...
... Drive coil fixing plate, 16 ... Bearing holder, 16
a...Brim, 16b...Through hole, 16c...Bearing escape prevention partition, 17...Thrust receiver, 18...Thrust receiver base, 19...Screw, 20...Drive coil, 21...Field magnet , 22a, 22b...
... Bearing, 23 ... E-ring, 24 ... Rotating shaft, 2
5... Rotating fan, 26... Rotating plate, 27... Blade, 28... Rotor yoke, 29... Electrical component,
30...Screw, 31...Notch, 31a, 31b
... End, 33 ... Hall element (position detection element)
.

Claims

[Scope of claims for utility model registration] (1) Fixing a bearing holder to an electric circuit mounting board,
A rotary shaft is rotatably supported on the bearing holder, and a stator armature is provided on the substrate surface around the bearing holder, in which one or more air-core drive coils and one position detection element are arranged, A field magnet that faces the stator armature and has 2p (p is an integer of 1 or more) N and S magnetic poles alternately is used as a rotor that rotates together with the rotating shaft, and the field magnet has a wind axis. A rotating fan that blows the air in the radial direction is fixedly installed, and one magnetic pole of the field magnet is mounted on a thrust bearing base made of a magnetic material for the rotating shaft supported by the bearing holder. One or more notches with a width equal to the width n times (n is an integer of 1 or more) are formed, and the ends of the notches are arranged between the dead center position and the position where the maximum starting torque is obtained. ,Cooling system. (2) One notch end provided on the thrust receiver base is provided at a position in front of the rotation direction by an electrical angle of less than 90 degrees from the position where maximum starting torque is obtained. Claims No.
Cooling device described in (1). (3) One notch end provided on the thrust receiver base is located at a position 45 degrees in electrical angle toward you in the direction of rotation from the position where maximum starting torque is obtained. Cooling equipment as described in scope item (2).