JPH041696U

JPH041696U -

Info

Publication number: JPH041696U
Application number: JP4295790U
Authority: JP
Priority date: 1990-04-20
Filing date: 1990-04-20
Publication date: 1992-01-08

Description

[Brief explanation of the drawing]

第１図は本考案の単相ＤＣブラシレス軸流フア
ン１の縦断面図、第２図は同分解斜視図、第３図
は第２図においてプリント基板を削除して描いた
分解斜視図、第４図は従来の単相ブラシレス軸流
フアンの縦断面図、第５図は同軸流フアンの分解
斜視図である。１，１′……単相ＤＣブラシレス軸流フアン、
２，２′……ベンチユリーケース本体、３，３′
……コイル配設部、４，４′……ステー、５，５
′……透孔、６−１，６−２……リード線、７…
…コーナーフランジ、８……リード線引出し部、
８ａ……端部延長辺、８ｂ……リード線取り出し
孔、９……軸流フアン固定用透孔、１０……回転
軸、１１……凹部、１２……回転フアン、１３−
１，１３−２……電機子コイル、１４……プリン
ト基板、１５……マグネツトロータ、１６……磁
電変換素子、１７……磁性体螺子、２０……軸受
、２１……カツプ型本体、２２……羽根、２３…
…ロータヨーク。 Fig. 1 is a longitudinal sectional view of a single-phase DC brushless axial flow fan 1 of the present invention, Fig. 2 is an exploded perspective view of the same, Fig. 3 is an exploded perspective view of Fig. 2 with the printed circuit board removed, and FIG. 4 is a longitudinal sectional view of a conventional single-phase brushless axial flow fan, and FIG. 5 is an exploded perspective view of a coaxial flow fan. 1,1'...Single-phase DC brushless axial fan,
2, 2'...Benture case body, 3, 3'
...Coil arrangement part, 4, 4'...Stay, 5, 5
'...Through hole, 6-1, 6-2...Lead wire, 7...
...Corner flange, 8...Lead wire pull-out part,
8a... End extension side, 8b... Lead wire take-out hole, 9... Axial flow fan fixing hole, 10... Rotating shaft, 11... Recess, 12... Rotating fan, 13-
1, 13-2... Armature coil, 14... Printed circuit board, 15... Magnetic rotor, 16... Magnetoelectric conversion element, 17... Magnetic screw, 20... Bearing, 21... Cup-shaped main body, 22...feather, 23...
...rotor yoke.

Claims

[Scope of Claim for Utility Model Registration] (1) A single-phase energizing structure for the motor housing part of the bench lily case body connected to a stay made of a magnetic material extending radially outward on the outer periphery of the motor housing part. Air is sucked from one axial direction with a single-phase stationary armature that has coreless armature coils arranged in the same configuration, and a magnetic rotor that has alternating north and south magnetic poles through an axial gap. In a single-phase DC brushless axial flow fan equipped with a rotary fan having rotary vanes that travel the air in the axial direction on the opposite side, the stay is connected to the effective conductor portion that contributes to the generated torque of the armature coil. θ angle in electrical angle in the opposite direction to the rotating direction of the rotating fan [However, θ is the dead center point where no torque is generated, that is, 0 degrees < n ・ θ degrees < n ・ 180 degrees in electrical angle] (n
is an integer greater than or equal to 1) in the circumferential direction, and is formed at a radially outer position of the motor storage portion, and the magnetic flux of the magnet rotor provided in the rotating fan causes the magnet rotor to A single-phase DC brushless axial flow fan comprising a stay and a magnetic rotor arranged so that the stay and the magnet rotor are magnetically attracted to the stay at a position where the fan can start automatically. (2) The armature coil is formed such that the outer periphery of the effective conductor portion that contributes to the generated torque in the radial direction extends to the outer periphery of the motor housing where the stay is located, and is disposed in the motor housing. The single-phase DC brushless axial flow fan according to claim (1).