JPH0468478U

JPH0468478U -

Info

Publication number: JPH0468478U
Application number: JP1990112575U
Authority: JP
Priority date: 1990-10-25
Filing date: 1990-10-25
Publication date: 1992-06-17

Description

[Brief explanation of drawings]

第１図はこの考案の実施例によるフアン装置の
断面図、第２図はエンドブラケツトの断面図、第
３図は駆動回路基板の正面図、第４図はスペーサ
の平面図、第５図は同側面図、第６図は同正面図
、第７図は回転子や継手ボスと軸体との取付構造
の拡大断面図である。１……フアンロータ、３……エンドブラケツト
、５……固定子、６……回転子、８……駆動回路
基板、９……固定ケース、３１……エンドブラケ
ツトの面板部、３２……エンドブラケツトの筒状
部、３４……開口、６７……マグネツト、６７ｂ
……マグネツトの延出部分、８３……スペーサ、
８５……スペーサの背面座、Ｈ……ホール素子。 Fig. 1 is a sectional view of a fan device according to an embodiment of this invention, Fig. 2 is a sectional view of an end bracket, Fig. 3 is a front view of a drive circuit board, Fig. 4 is a plan view of a spacer, and Fig. 5 is a sectional view of a fan device according to an embodiment of this invention. FIG. 6 is a side view of the same, FIG. 6 is a front view of the same, and FIG. 7 is an enlarged cross-sectional view of the attachment structure between the rotor and the joint boss and the shaft body. DESCRIPTION OF SYMBOLS 1...Fan rotor, 3...End bracket, 5...Stator, 6...Rotor, 8...Drive circuit board, 9...Fixed case, 31...Face plate portion of end bracket, 32...End bracket cylindrical part, 34...opening, 67...magnet, 67b
... Extending portion of magnet, 83 ... Spacer,
85...Back seat of spacer, H...Hall element.

Claims

[Claims for Utility Model Registration] 1. A cylindrical rotor 6 is arranged around a stator 5 supported by a face plate portion 31 of an end bracket 3,
A fan rotor 1 is attached to the rotor 6, a magnet 67 is provided on the inner surface of the rotor 6, and a drive circuit board 8 is disposed on the opposite side of the fan rotor 1 with the face plate portion 31 of the end bracket 3 interposed therebetween. In the fan device, the magnet 6
7 extends to the outer circumferential side of the rotor 6, and the Hall element H mounted on the drive circuit board 8 is connected to the extending portion 6 of the magnet 67 exposed on the outer circumferential side of the rotor 6.
A fan device characterized in that it faces 7b from the outside of the rotor 6. 2 The end bracket 3 has a face plate portion 31,
A cylindrical portion 32 extending forward from the face plate portion 31 to form a rotor housing space, the cylindrical portion 32
2. The fan device according to claim 1, wherein a Hall element H is accommodated in an opening 34 formed at a proper location. 3. A Hall element H is supported by a spacer 83 attached to the drive circuit board 8, and the Hall element H is protruded from the spacer 83 and the fixed case 9 that holds the cylindrical part 32 of the end bracket 3. The fan device according to claim 2, wherein the fan device is held between the back seat 85 and the rear seat 85. 4. The magnet 67 including its extended portion 67b is compression molded, and magnetization is performed simultaneously on the extended portion 67b and the portion facing the stator 5, and the compression molding process is performed. The fan device according to claim 1, wherein the fan device is mounted on the rotor 6 at the same time.