JPS61169495U

JPS61169495U -

Info

Publication number: JPS61169495U
Application number: JP1985051487U
Authority: JP
Priority date: 1985-04-06
Filing date: 1985-04-06
Publication date: 1986-10-21

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例としての駆動回路
、第２図は、従来例としての駆動回路、第３図は
、本考案を適用しようとする一例として示すデイ
スク型ブラシレスフアンモータの縦断面図、第４
図は、第３図のデイスク型ブラシレスフアンモー
タのケースの斜視図、第５図は、第３図のフアン
付カツプ体の斜視図、第６図は、６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平面図、第７図は、６極の円
環状の界磁マグネツトの下面図、第８図は、第６
図のステータ電機子と第７図の６極の界磁マグネ
ツトとの展開図、第９図は、４極の界磁マグネツ
トを用いる場合に使用するステータ電機子を形成
する電機子コイルの平面図、第１０図は、４極の
界磁マグネツトの下面図、第１１図は、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平面図、第１２図は、
第９図の電機子コイルの拡大した平面図、第１３
図は、第９図及び第１１図のステータ電機子と４
極の界磁マグネツトとの展開図、第１４図は、８
極の界磁マグネツトを用いる場合に使用するステ
ータ電機子を形成する電機子コイルの平面図、第
１５図は、８極の界磁マグネツトの下面図、第１
６図は、８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平面
図、第１７図は、第１４図及び第１６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
１８図は、第１４図の電機子コイルの拡大した平
面図、第１９図は、従来の電機子コイル１個、位
置検知素子１個の一相通電されるデイスク型ブラ
シレスフアンモータの往復通電用の駆動回路、第
２０図は、駆動回路のタイミングチヤート、第２
１図及び第２２図は、第１９図の駆動回路の欠点
を解決するための従来の対策案を示す回路の説明
図、第２３図は、従来の第１９図の駆動回路の欠
点を解決した本考案の第二実施例としての駆動回
路である。ＦＭ……デイスク型ブラシレスフアンモータ、
Ｑ_１，…，Ｑ_８……トランジスタ、Ｒ_７……エミ
ツタ抵抗、１……磁電変換素子（位置検知素子）
、２……正側電源端子、３……グランド端子、４
……トランジスタブリツジ、５，５′，５″，６
，６′，６″，４５，４５′……電機子コイル、
５ａ―１，５ａ―２，５′ａ―１，５′ａ―２，
５″ａ―１，５″ａ―２，６ａ―１，６ａ―２，
６′ａ―１，６′ａ―２，６″ａ―１，６″ａ―
２，４５ａ―１，…，４５ａ―４，４５′ａ―４
，…，４５′ａ―４……発生トルクに寄与する導
体部、２４……デイスク型ブラシレスフアンモー
タ用角型ケース、１８……回転軸、２１……エア
ー通過孔、２２……ステー、２４……プリント基
板、２５―１，２５―２……磁性体からなる螺子
、２７……ステータ電機子、２８……フアン付カ
ツプ体、２９……フアン、３０……ロータヨーク
、３１，３１′，３１″……界磁マグネツト、５
２，５２′，５３……駆動回路。 FIG. 1 shows a drive circuit as an embodiment of the present invention, FIG. 2 shows a drive circuit as a conventional example, and FIG. 3 shows a vertical cross-section of a disk-type brushless fan motor as an example to which the present invention is applied. Front view, 4th
The figure is a perspective view of the case of the disk type brushless fan motor shown in Fig. 3, Fig. 5 is a perspective view of the fan-equipped cup body of Fig. 3, and Fig. 6 is a perspective view of the case of the disc-type brushless fan motor shown in Fig. 3. A plan view of the stator armature consisting of two armature coils, FIG. 7 is a bottom view of a six-pole annular field magnet, and FIG.
Figure 9 is a developed view of the stator armature shown in the figure and the 6-pole field magnet shown in Figure 7, and Figure 9 is a plan view of the armature coil forming the stator armature used when a 4-pole field magnet is used. , FIG. 10 is a bottom view of a four-pole field magnet, FIG. 11 is a plan view of a stator armature consisting of two armature coils when a four-pole field magnet is used, and FIG. ,
Enlarged plan view of the armature coil of FIG. 9, No. 13
The figure shows the stator armature and 4 in Figures 9 and 11.
The developed view of the poles and the field magnet, Figure 14, is 8.
Fig. 15 is a plan view of the armature coil forming the stator armature used when a field magnet with 8 poles is used;
Figure 6 shows two cases when using an 8-pole field magnet.
FIG. 17 is a plan view of the stator armature consisting of two armature coils, FIG. 17 is a developed view of the stator armature and eight-pole field magnet shown in FIGS. 14 and 16, and FIG. Fig. 19 is an enlarged plan view of the armature coil of , and Fig. 20 is a drive circuit for reciprocating energization of a conventional disc-type brushless fan motor that is energized in one phase and has one armature coil and one position detection element. is the timing chart of the drive circuit, the second
1 and 22 are explanatory diagrams of circuits showing conventional countermeasures for solving the drawbacks of the drive circuit shown in FIG. 19, and FIG. This is a drive circuit as a second embodiment of the present invention. FM...Disc type brushless fan motor,
_Q1 ,..., _Q8 ...transistor, _R7 ...emitter resistor, 1...magnetoelectric conversion element (position sensing element)
, 2...Positive power supply terminal, 3...Ground terminal, 4
...Transistor bridge, 5, 5', 5'', 6
, 6', 6'', 45, 45'...armature coil,
5a-1, 5a-2, 5'a-1, 5'a-2,
5″a-1, 5″a-2, 6a-1, 6a-2,
6′a-1, 6′a-2, 6″a-1, 6″a-
2,45a-1,...,45a-4,45'a-4
,...,45'a-4...Conductor portion contributing to generated torque, 24...Square case for disk type brushless fan motor, 18...Rotating shaft, 21...Air passage hole, 22...Stay, 24 ... Printed circuit board, 25-1, 25-2 ... Screw made of magnetic material, 27 ... Stator armature, 28 ... Cup body with fan, 29 ... Fan, 30 ... Rotor yoke, 31, 31', 31″...Field magnet, 5
2, 52', 53...drive circuit.

Claims

[Claims for Utility Model Registration] (1) In a single-phase energized brushless motor with one position sensing element that can self-start by obtaining coking torque, a four-terminal Hall element is used as the position sensing element, and the Hall _One of the two power supply terminals of the element is connected to the positive side and _the other to the ground _side . The final stage transistor _Q6 connected to the side becomes conductive to supply current to the armature coil in a predetermined direction, and the transistor _Q4 connected to the positive power supply side and the final stage transistor _Q5 connected to the ground side conduct. The armature coil is electrically conductive in a predetermined direction, and the connection terminal between the transistors _Q3 and _Q4 is connected to the positive power supply side, and the transistor Q
₅ and _Q6 are connected to the ground side, and the output of the transistor _Q1 is connected to the base of the transistor Q6, and the output of the transistor _Q2 is connected to the base of the transistor Q6 _. A single-phase energized brushless motor having a drive circuit connected to the base of the transistor _Q5 and having an emitter resistor _R7 interposed between the connection point between the transistors _Q5 and _Q6 of the transistor bridge circuit and the ground side. . (2) The above resistor _R7 uses a temperature variable resistance element,
Utility model registration claim No. 1, in which the drive circuit is configured to linearly change the energization waveform when switching the armature coil energization and also to perform temperature compensation.
A brushless motor that is energized in one phase as described in (1). (3) The above transistors _Q1 ,..., _Q4 are PNP
_Q5 and _Q6 are NPN type transistors, Utility Model Registration Claim No. (1)
A brushless motor that is energized in one phase as described in paragraph (2) or paragraph (2). (4) The drive circuit connects one power supply terminal of the Hall element to the positive power supply side via a resistor _R2 ,
The other power supply terminal is connected to the ground side, one output terminal of the Hall element is connected to the base of transistor Q ₁ , the other output terminal is connected to the base of transistor Q ₂ , and the emitters of transistors Q ₁ and Q ₂ are connected. The collectors of transistors _{Q 1} _and Q ₂ are connected to the ground side through resistors R ₃ and R ₄ , respectively, and the collector of transistor Q 1 is connected to the positive power supply side through resistor R ₁ . Connect the collector of transistor Q ₂ to the base of transistor Q ₅ , connect the emitters of transistors _{Q 3} _and Q ₄ to the positive power supply side, and connect the collector of transistor Q ₂ to the base of transistor Q ₅ . The emitters are connected to the ground side via resistor _R7 , and the base of transistor _Q3 and transistor _Q6 , the base of transistor Q ₄ and the collector of transistor Q ₅ are connected, the collector of transistor Q ₃ and the collector of transistor Q ₅ are connected, and the collector of transistor Q ₄ and the collector of transistor Q ₆ are connected. The armature coil and the capacitor C are connected between the connection point between the collector of transistor _Q3 and the collector of transistor _Q5 and the connection point between the collector of transistor _Q4 .
A single-phase energized brushless motor according to any one of claims (1) to (3) of the utility model registration claims, which has a parallel circuit interposed therebetween. (5) The above single-phase brushless motor is
A stator armature consisting of one or more armature coils in the same phase serves as a stator, and a field magnet having 2p N and S magnetic poles (p is a positive integer of 1 or more) is opposed to the stator. 1. A single-phase energized brushless motor according to any one of claims (1) to (4) of the utility model registration claim, which has a rotor that rotates in a targeted manner. (6) The above single-phase brushless motor is
A stator armature in which one or more armature coils in the same phase position are arranged so that they do not overlap each other serves as a stator, and the field has 2p N and S magnetic poles (p is a positive integer of 2 or more). A single-phase energized brushless motor according to claim 5, wherein the magnet serves as a rotor that rotates relative to the stator. (7) The above single-phase brushless motor is
A single-phase energized brushless motor according to claim 5 or 6 of the utility model registration claim, which is a coreless motor. (8) The above single-phase brushless motor is
If the coking torque can be rotated in either the forward or reverse direction, the above-mentioned coking torque should be generated at or near the conductor part that contributes to the torque generated by the armature coil, or at a position in phase with the conductor part. A single-phase energized brushless motor according to any one of claims (5) to (7) of the claims registered as a utility model. (9) The above single-phase brushless motor is
When it is to be rotated in only one direction, from the conductor part that contributes to the torque generated by the armature coil, from the conductor part or almost the conductor part to the field magnet half the magnetic pole width or approximately A single-phase energized brushless motor according to any one of claims (5) to (7) of the utility model registration claim, in which coking torque is generated at a position about half the width of the magnetic pole. . (10) The above coking torque is calculated from the conductor part or almost the conductor part that contributes to the generated torque of the armature coil, about 1/4 magnetic pole width of one magnetic pole width of the field magnet from the conductor part in the rotation direction. A single-phase energized brushless motor according to any one of claims (1) to (7) of the claims registered as a utility model, wherein the current is generated at a position of . (11) 11 The brushless motor that is energized in one phase is a coreless motor, and the brushless motor that is energized in one phase is a coreless motor. . (12) 12 The single-phase energized brushless motor according to claim 11 (11), wherein the one-phase energized brushless motor is a coreless disk type brushless motor. (13) The above-mentioned armature coil is defined in the utility model registration claim No. (12) 12, in which the opening angle of the conductor portion contributing to the generated torque is formed to be the same or almost the same as the magnetic pole width of the field magnet. A brushless motor that is energized in one phase. (14) 4p with alternating N and S magnetic poles (p is 1
or an integer of 2) pole field magnet is used as a rotor, and the opening angle width of the conductor part that contributes to the generated torque and is provided face-to-face with the field magnet and contributes to the generated torque is substantially equal to the magnetic pole width of the magnet. In a disc-type brushless motor, which is composed of a stator armature consisting of one armature coil formed in a frame shape, and one position detection element, each of the armature coils contributes to the generated torque. A conductor portion is formed to extend so as to face different poles that are 180 degrees symmetrical, and a conductor portion that contributes to the generated torque of the armature coil with respect to the rotational direction of the magnet is connected to a quarter of the magnet rotor. A coking generating means configured to generate coking at a position approximately 1 or approximately 1/4 of the magnetic pole width or at a position substantially equal to the position to eliminate a dead point is provided in the armature coil. A temperature variable resistance element whose resistance value changes depending on the temperature is provided between the emitter of the final stage transistor for energization driving and the power supply to linearly change the energization waveform at the time of switching the energization and to perform temperature compensation. A single-phase energized brushless motor according to claim 12 of the registered utility model, which is provided with an energization control circuit as described above. (15) The above-mentioned coking generating means is formed by screwing a screw made of a magnetic material to a non-magnetic material provided on the lower surface of the armature coil, as claimed in claim (1) of the utility model registration. A single-phase energized brushless motor according to any one of items (14) to (14). (16) The single-phase energized brushless motor according to claim 15, wherein the screw is for fixing the stator armature with the non-magnetic material. (17) The brushless motor is a single-phase energized brushless motor according to any one of claims (1) to (16) of the scope of utility model registration, which is a disc-type brushless motor or a disc-type brushless fan motor. .