JPS62104565U

JPS62104565U -

Info

Publication number: JPS62104565U
Application number: JP7842285U
Authority: JP
Priority date: 1985-05-24
Filing date: 1985-05-24
Publication date: 1987-07-03

Description

[Brief explanation of the drawing]

第１図及び第２図は一相通電されるコアレスタ
イプのブラシレスモータにおいて従来のコギング
トルク発生させる方法の説明図、第３図は第２図
の場合の停止位置の説明図、第４図は第２図の場
合の死点付近のコギングトルクの説明図、第５図
は理想的な合成トルク曲線の説明図、第６図は従
来例として示すコアレスタイプの一相通電される
デイスク型軸流ブラシレスフアンモータの平面図
、第７図は第６図の縦断面図、第８図は６極の界
磁マグネツトの下面図、第９図は第７図の固定子
側を拡大した縦断面図、第１０図はステータ電機
子の平面図、第１１図は本考案を適用しようとす
る一例として示すデイスク型軸流ブラシレスフア
ンモータの縦断面図、第１２図は第１１図のデイ
スク型軸流ブラシレスフアンモータのケースの斜
視図、第１３図は第１図のフアン付カツプ体の斜
視図、第１４図は本考案第１実施例における４極
の界磁マグネツトを用いる場合の２個の電機子コ
イルからなるステータ電機子の下面図、第１５図
は４極の円環状の界磁マグネツトの下面図、第１
６図は第１４図のステータ電機子と第１５図の４
極の界磁マグネツトの展開図、第１７図は６極の
界磁マグネツトを用いる場合に使用する本考案の
第２実施例としてのステータ電機子を形成する電
機子コイルの平面図、第１７図は本考案第２実施
例に用いるステータヨークの切欠部の側縦断面図
、第１８図は６極の界磁マグネツトと２個の電機
子コイルとの展開図、第２０図は本考案第４実施
例の８極の界磁マグネツトの下面図、第２１図は
８極の界磁マグネツトを用いる場合に使用する本
考案第５実施例としてのステータ電機子を形成す
る電機子コイルの平面図、第２２図は本考案第６
実施例に用いる４極の界磁マグネツトを用いる場
合の電機子コイルの平面図、第２３図は第２２図
の拡大図、第２４図は本考案第７実施例の８極の
界磁マグネツトを用いる場合の１個の電機子コイ
ルからなるステータ電機子の平面図、第２５図は
第２４図及び第２６図のステータ電機子と８極の
界磁マグネツトとの展開図、第２６図は第２４図
の電機子コイルの拡大した平面図である。１……ロータヨーク、２，２′……界磁マグネ
ツト、３……電機子コイル、４……エアーギヤツ
プ、５……ステータヨーク、６……鉄棒、７……
磁束、８……合成トルク曲線、９……電機子コイ
ルトルク曲線、１０……コギングトルク曲線、１
１，１１′……デイスク型軸流ブラシレスモータ
、１２……ケーシング、１３……凹部、１４……
モータ部、１５……フアン、１６……透孔、１７
……回転子、１８……カツプ型本体、１９……ロ
ータヨーク、２０……回転軸、２１……オイルレ
スメタル軸受、２２……プリント基板、２３……
ステータヨーク、２４……位置検知素子、２５…
…コギング発生用磁性体、２６……端子、２７…
…上心線、２８……切欠部、２９……モータケー
シング凹部空間部、３１……デイスク型軸流ブラ
シレスフアンモータ用角型ケース、３２……モー
タケーシング、３３……支柱、３４……螺子孔、
３５……軸受ハウジング、３６，３７……ベアリ
ング軸受、３８……抜け止め用Ｅリング、３９…
…凹部、４０……エアー通し孔、４１―１……プ
ラス電源コード、４１―２……マイナス電源コー
ド、４２……ステー、４４―１，４４―２……電
機子コイル、４５，４５′……ステータ電機子、
４６……螺子、４７……フアン付カツプ体、４８
……フアン、４９……ボス部、５０……ロータヨ
ーク、５１，５１′……切欠部、５２，５２′…
…ステータヨーク、５２ａ，５２′ａ……一方の
端部、５３……電気部品（抵抗）、５４，５５，
５６……他の切欠部を設けるのに都合良い位置、
５７，５８，６０，６１……トランジスタ、５９
，６２……接続点、６３……プラス電源端子、６
４……グランド、６５―１，６５―２……出力端
子、６６，６７……点線囲い部、６８……界磁マ
グネツト、６９……ステータ電機子、７０，７１
……電機子コイル、７２……切欠部、７３……ス
テータヨーク、７３ａ……端部、７４……ステー
タ電機子、７５……電機子コイル、７６……ステ
ータヨーク、７６ａ……端部、７７……切欠部、
７８……ステータ電機子、７９……電機子コイル
、８０，…，８５……点線囲い部、８６……ステ
ータヨーク、８６ａ……切欠端部、８７……切欠
部。 Figures 1 and 2 are explanatory diagrams of the conventional method of generating cogging torque in a coreless type brushless motor that is energized in one phase, Figure 3 is an explanatory diagram of the stopping position in the case of Figure 2, and Figure 4 is Figure 2 is an explanatory diagram of the cogging torque near the dead center in the case of the case, Figure 5 is an explanatory diagram of the ideal composite torque curve, and Figure 6 is a conventional example of coreless type single-phase energized disk type axial flow. A plan view of the brushless fan motor, Fig. 7 is a vertical cross-sectional view of Fig. 6, Fig. 8 is a bottom view of a 6-pole field magnet, and Fig. 9 is an enlarged longitudinal cross-sectional view of the stator side of Fig. 7. , FIG. 10 is a plan view of the stator armature, FIG. 11 is a vertical cross-sectional view of a disk type axial flow brushless fan motor shown as an example to which the present invention is applied, and FIG. 12 is a plan view of the disk type axial flow of FIG. 11. FIG. 13 is a perspective view of the case of the brushless fan motor, FIG. 13 is a perspective view of the fan-equipped cup shown in FIG. Figure 15 is a bottom view of the stator armature consisting of child coils, and Figure 15 is a bottom view of the four-pole annular field magnet.
Figure 6 shows the stator armature in Figure 14 and 4 in Figure 15.
FIG. 17 is a developed view of a field magnet with six poles; FIG. 18 is a side vertical sectional view of the notch of the stator yoke used in the second embodiment of the present invention, FIG. 18 is a developed view of a six-pole field magnet and two armature coils, and FIG. FIG. 21 is a bottom view of the 8-pole field magnet according to the embodiment; FIG. 21 is a plan view of the armature coil forming the stator armature as the fifth embodiment of the present invention used when using the 8-pole field magnet; Figure 22 is the sixth version of this invention.
FIG. 23 is an enlarged view of FIG. 22, and FIG. 24 shows an 8-pole field magnet according to the seventh embodiment of the present invention. FIG. 25 is a plan view of a stator armature consisting of one armature coil when used, FIG. 25 is a developed view of the stator armature and eight-pole field magnet shown in FIGS. 24 and 26, and FIG. FIG. 25 is an enlarged plan view of the armature coil of FIG. 24; 1... Rotor yoke, 2, 2'... Field magnet, 3... Armature coil, 4... Air gap, 5... Stator yoke, 6... Iron bar, 7...
Magnetic flux, 8...Synthetic torque curve, 9...Armature coil torque curve, 10...Cogging torque curve, 1
1, 11'... Disk type axial flow brushless motor, 12... Casing, 13... Recess, 14...
Motor part, 15...Fan, 16...Through hole, 17
... Rotor, 18 ... Cup-shaped main body, 19 ... Rotor yoke, 20 ... Rotating shaft, 21 ... Oil-less metal bearing, 22 ... Printed circuit board, 23 ...
Stator yoke, 24...Position detection element, 25...
...Magnetic material for cogging generation, 26...Terminal, 27...
... Upper center line, 28 ... Notch, 29 ... Motor casing concave space, 31 ... Square case for disk type axial flow brushless fan motor, 32 ... Motor casing, 33 ... Support column, 34 ... Screw hole,
35...Bearing housing, 36, 37...Bearing bearing, 38...E-ring for retaining, 39...
...Recess, 40...Air hole, 41-1...Positive power cord, 41-2...Negative power cord, 42...Stay, 44-1, 44-2...Armature coil, 45, 45' ...stator armature,
46...screw, 47...cup body with fan, 48
...Fan, 49...Boss part, 50...Rotor yoke, 51, 51'...Notch part, 52, 52'...
...Stator yoke, 52a, 52'a...One end, 53...Electric component (resistance), 54, 55,
56...Convenient position for providing other notches,
57, 58, 60, 61...transistor, 59
, 62...Connection point, 63...Positive power terminal, 6
4... Ground, 65-1, 65-2... Output terminal, 66, 67... Dotted line enclosure, 68... Field magnet, 69... Stator armature, 70, 71
... Armature coil, 72 ... Notch, 73 ... Stator yoke, 73a ... End, 74 ... Stator armature, 75 ... Armature coil, 76 ... Stator yoke, 76a ... End, 77...notch part,
78... Stator armature, 79... Armature coil, 80,..., 85... Dotted line surrounding portion, 86... Stator yoke, 86a... Notch end, 87... Notch.

補正昭６２．１．３０図面の簡単な説明を次のように補正する。明細書５６頁１０行「第１７図」を「第１８図
」に、同第１２行「第１８図」を「第１９図」に
訂正する。Amendment January 30, 1982 The brief description of the drawing is amended as follows. On page 56 of the specification, line 10, "Fig. 17" is corrected to "Fig. 18," and line 12, "Fig. 18" is corrected to "Fig. 19."

Claims

[Scope of claims for utility model registration] (1) 2p having N and S magnetic poles alternately (p is 2
A field magnet with poles (a positive integer greater than or equal to) as a rotor is provided as a rotor, and one or more air-core armature coils are disposed at a fixed side position facing the field magnet, and the armature coil is disposed. In a disk-type brushless motor with single-phase energization, which has a stator yoke to conduct the current flow and one position detection element to determine in which direction the current flows through the armature coil, one magnetic pole of the field magnet The width of T,n
, m is an integer greater than or equal to 1, and the width of the notch is θ, then the stator yoke has a notch with a width θ given by T≦m・T=θ≦(2n-1)・T or approximately θ width. The end of the notch is located within one-half or approximately one-half of the magnetic pole of the field magnet in the direction of rotation of the rotor from the conductor portion that contributes to the torque generated by the armature coil. A stator yoke is provided at a position up to this side or at a position in phase with this position, and the stator yoke extends from the conductor part that contributes to the generated torque of the armature coil located in the rotation direction of the rotor to the end of the above-mentioned notch part. A disk-type brushless motor that is energized in one phase and is formed by gradually reducing the volume or area of the stator yoke between the stator yoke and the stator yoke so that even one position sensing element can be activated automatically. (2) The end of the notch is located within one-third or approximately one-third of the magnetic pole of the field magnet in the direction of rotation of the rotor from the conductor that contributes to the torque generated by the armature coil. A single-phase energized disk-type brushless motor according to claim (1) of the utility model registration, which is provided so as to be located at a position up to the front or at a position in phase with the position. (3) The end of the notch is located within one quarter or approximately one quarter of the magnetic pole of the field magnet in the direction of rotation of the rotor from the conductor portion contributing to the torque generated by the armature coil. Utility model registration claim number (2) provided in the foreground position or the same position as the position
A disc-type brushless motor with single-phase energization as described in item ). (4) The above-mentioned notches are provided in plurality at the above-mentioned positions of the stator yoke, as stated in claim (1) of the utility model registration claim.
A disc-type brushless motor that is energized in one phase according to any one of items (3) to (3). (5) The stator yoke is a magnetic substrate in which an insulating layer is applied to the surface of a magnetic plate, and a printed wiring pattern made of a conductor is formed on the insulating layer. A single-phase energized disk-type brushless motor according to any one of claims (1) to (4) as a utility model. (6) The air-core armature coil described above is characterized in that the opening angle of the conductor portion contributing to the generated torque is an odd number or approximately an odd number multiple of the magnetic pole width of the field magnet. A disc-type brushless motor that is energized in one phase according to any one of items 1) to 5). (7) A single-phase energized disk-type brushless motor according to claim (6) of the utility model registration, wherein a plurality of the armature coils are provided at the same phase position. (8) 4P with alternating N and S magnetic poles (P is 1
or an integer of 2) as a rotor, and the opening angle of the conductor portion that contributes to the generated torque and is provided face-to-face with the magnet and contributes to the generated torque is substantially equal to the magnetic pole width of the magnet rotor. It consists of one armature coil formed in a frame shape with an opening angle width, and the armature coil is extended so that each conductor part contributing to the generated torque faces different poles that are 180 degrees symmetrical. A single-phase energized disk-type brushless motor according to claims (1) to (5) of the utility model registration, which uses one of the above-mentioned motors. (9) The stator yoke has a printed circuit board for arranging a position detection element and electrical components for an energization control circuit on either the upper or lower surface of the stator yoke, as claimed in item (1) of the utility model registration claim. ~No.(4)
2. A disk-type brushless motor that is energized in one phase according to any one of paragraphs (6) to (8). (10) The position detection element is disposed at a position facing the cutout portion, which is substantially equivalent to the conductor portion that contributes to the generated torque of the armature coil. A disk-type brushless motor that is energized in one phase according to any one of items ) to (9). 〓(11)１１〓 The above-mentioned one-phase energized disk-type brushless motor is a one-phase energized disk-type axial-flow brushless fan motor incorporating the same, and the scope of utility model registration claims (1) to 1. A disc-type brushless motor that is energized in one phase according to any of paragraph (10). (12) 12 The means for reducing the volume of the stator yoke between the end of the notch and the conductor portion that contributes to the generated torque of the armature coil located in the rotational direction of the rotor includes Utility model registration claim No. 1 formed by forming a taper in the section
A disk-type brushless motor that is energized in one phase according to any one of items (1) to (11) to (11).