JPH0169367U

JPH0169367U -

Info

Publication number: JPH0169367U
Application number: JP1987129211U
Authority: JP
Priority date: 1987-08-27
Filing date: 1987-08-27
Publication date: 1989-05-09

Description

[Brief explanation of the drawing]

第１図は従来のデイスク型単相ブラシレス軸流
フアンモータの平面図、第２図は同ブラシレス軸
流フアンモータの側面図、第３図は同ブラシレス
軸流フアンモータの縦断面図、第４図は同ブラシ
レス軸流フアンモータ本体の上面斜視図、第５図
は同ブラシレス軸流フアンモータのステータコア
レス電機子の上面斜視図、第６図は同ブラシレス
軸流フアンモータに用いたステータコアレス電機
子の平面図、第７図は同ブラシレス軸流フアンモ
ータに用いた回転フアンの下面斜視図、第８図は
本考案の一実施例としてのデイスク型単相ブラシ
レス軸流フアンモータの平面図、第９図は同軸流
フアンモータの側面図、第１０図は同軸流フアン
モータの縦断面図、第１１図は同軸流フアンモー
タに用いた一例としてのステータコアレス電機子
の上面斜視図、第１２図は同軸流フアンモータに
用いた回転フアンの上面斜視図で、第１３図は回
転フアンの下面斜視図である。１，１′……デイスク型単相ブラシレス軸流フ
アンモータ、２……デイスク型単相ブラシレス軸
流フアンモータ本体、３……外側ケーシング、４
……ステー、５……カツプ型モータケーシング、
５ａ……支柱、６，６′……インペラ、６′ａ，
６′ｂ，６′ｃ……インペラ部、７……透孔、８
……プリント基板、９，９′……ステータヨーク
、１０……螺子、１１……駆動回路収納用空隙部
、１２，１３……電機子コイル、１２ａ，１２ｂ
，１３ａ，１３ｂ……発生トルクに寄与する有効
導体部、１２ｃ，１２ｄ，１３ｃ，１３ｄ……発
生トルクに寄与しない導体部、１４，１４′……
ステータコアレス電機子、１５……マグネツトロ
ータ、１６……切欠部、１７……端部、１８……
位置検知素子、１９，１９′……ロータヨーク、
２０，２０′……回転フアン、２１，２１′……
カツプ型回転体、２１′ａ……垂直部、２１′ｂ
……傘部、２２……ボス部、２３……回転軸、２
４……軸承ハウス、２５，２６……玉軸承（ボー
ルベアリング）、２７，２７′……止め輪、２８
……貫通孔、２９−１……正側電源用リード線、
２９−２……正側電源用リード線、３０……電子
部品、３１−１，３１−２……切欠部、３２……
端部、３３−１，３３−２……透孔、３４……小
孔、３５……端子、３６……プリント配電パター
ン、３７……滑り軸承、３８……点線囲い部、４
０……回転子重心、４１……空隙、４２……回転
バランス調整用リグ状溝。 Figure 1 is a plan view of a conventional disc-type single-phase brushless axial fan motor, Figure 2 is a side view of the same brushless axial fan motor, Figure 3 is a longitudinal sectional view of the same brushless axial fan motor, and Figure 4 is a longitudinal sectional view of the same brushless axial fan motor. The figure is a top perspective view of the main body of the brushless axial fan motor, Figure 5 is a top perspective view of the stator coreless armature of the brushless axial fan motor, and Figure 6 is the stator coreless electric machine used in the brushless axial fan motor. 7 is a bottom perspective view of the rotary fan used in the brushless axial fan motor, and FIG. 8 is a plan view of a disk type single-phase brushless axial fan motor as an embodiment of the present invention. FIG. 9 is a side view of the coaxial fan motor, FIG. 10 is a vertical cross-sectional view of the coaxial fan motor, FIG. 11 is a top perspective view of a stator coreless armature as an example used in the coaxial fan motor, and FIG. The figure is a top perspective view of a rotating fan used in a coaxial fan motor, and FIG. 13 is a bottom perspective view of the rotating fan. 1, 1'... Disc type single phase brushless axial fan motor, 2... Disc type single phase brushless axial fan motor main body, 3... Outer casing, 4
...Stay, 5...Cup type motor casing,
5a...Strut, 6, 6'...Impeller, 6'a,
6'b, 6'c... Impeller part, 7... Through hole, 8
...Printed circuit board, 9,9'...Stator yoke, 10...Screw, 11...Driving circuit storage cavity, 12,13...Armature coil, 12a, 12b
, 13a, 13b...effective conductor portions that contribute to the generated torque, 12c, 12d, 13c, 13d...conductor portions that do not contribute to the generated torque, 14, 14'...
Stator coreless armature, 15... Magnetic rotor, 16... Notch, 17... End, 18...
Position detection element, 19, 19'... rotor yoke,
20, 20'... Rotating fan, 21, 21'...
Cup-shaped rotating body, 21'a...vertical part, 21'b
... Umbrella part, 22 ... Boss part, 23 ... Rotating shaft, 2
4... Bearing house, 25, 26... Ball bearing, 27, 27'... Retaining ring, 28
...Through hole, 29-1...Positive power supply lead wire,
29-2...Positive power supply lead wire, 30...Electronic component, 31-1, 31-2...Notch, 32...
End, 33-1, 33-2...Through hole, 34...Small hole, 35...Terminal, 36...Printed power distribution pattern, 37...Sliding bearing, 38...Dotted line surrounding portion, 4
0...Rotor center of gravity, 41...Gap, 42...Rig-shaped groove for adjusting rotational balance.

Claims

[Claims for Utility Model Registration] (1) Two magnetic poles, N and S, are placed in the concave part of the cup body.
(P is an integer of 1 or more) A rotary fan having magnetic rotors and an impeller formed on the outer periphery of the cup body for blowing air in the axial direction, a disk type brushless axial flow fan motor body and a stay. a stator coreless armature having a motor installation part formed in the motor main body connected to each other; and a stator coreless armature having one or more coreless armature coils provided in the motor installation part facing the magnet rotor with an air gap therebetween. In the disc-type brushless axial fan motor, the cup body is formed smaller than the outer diameter of the stator coreless armature, and its outer periphery is formed vertically and faces the stator coreless armature through an axial gap. The lower end has a ring-shaped groove for adjusting the rotational balance formed between the inner periphery and the outer periphery of the magnet rotor, and a ring-shaped groove for adjusting the rotational balance is formed on the outer periphery of the cup body facing the ring-shaped groove for adjusting the rotational balance in a radial outward direction. A first impeller part forming an extending umbrella part and formed on a vertical outer periphery of the cup body, a second impeller part formed on the outer periphery of the umbrella part, and the first and second impeller parts. A disk type brushless axial flow fan motor, comprising: a third impeller portion extending longer in the axial direction than the cup body on the outer periphery of the cup body to form an impeller inclined in a predetermined direction. (2) A utility model characterized in that the rotating shaft of the rotating fan equipped with the magnetic rotor is supported by a ball bearing at the center of gravity of the rotating fan, and by a sliding bearing at the rotating shaft at the other end. A disc type brushless axial flow fan motor according to registered claim (1). (3) The disc-type brushless axial fan motor pressurizes the ball bearing by the magnetic attraction force between the magnet rotor and the stator yoke.
A disc type brushless axial flow fan motor according to claim (2) of the utility model registration. (4) The disc-type brushless axial fan motor is a disc-type single-phase brushless axial fan motor according to any one of claims (1) to (3) of the utility model registration claim. Axial fan motor. (5) The disc-type single-phase brushless axial fan motor uses a single-phase brushless motor with a coreless disc-type structure, and the single-phase brushless motor can be self-started by the stator yoke of the single-phase brushless motor. A disc-type brushless axial flow fan motor according to claim (4) of the registered utility model, which has a cutout portion having the following shape. (6) The notch formed in the stator yoke is
When the width of one magnetic pole of the magnet rotor is θ, n
・Utility model registration request that has one or more opening angles formed with a width of θ (where n is an integer greater than or equal to 1 and less than the number of 2P) or a width of approximately n/θ A disc-type brushless axial flow fan motor as described in item (5). (7) Place the stator yoke so that one end of the above notch is located about 1/5 to 1/2 magnetic pole width in the rotational direction of the rotating fan from the position where maximum starting torque is obtained. A disc-type brushless axial flow fan motor according to claim (6) of the utility model registration, comprising: (8) The stator coreless armature has a plurality of small holes in the stator yoke to reduce excess current loss, and printed circuit boards are arranged closely together on the lower surface of the stator yoke. Terminals of electronic components constituting the drive circuit on the lower surface are made to protrude to the upper surface of the printed circuit board through small holes formed in the printed circuit board, and the terminals of the electronic components are soldered on the upper surface of the printed circuit board to electrically connect the terminals. The disk according to any one of claims (1) to (7) of the claims registered as a utility model, wherein the soldered portion faces the small hole of the stator yoke which is connected and the soldered portion is disposed on the upper surface of the printed circuit board. Type single phase brushless axial fan motor.