JPH0612947B2 - No commutator motor - Google Patents
No commutator motorInfo
- Publication number
- JPH0612947B2 JPH0612947B2 JP59239850A JP23985084A JPH0612947B2 JP H0612947 B2 JPH0612947 B2 JP H0612947B2 JP 59239850 A JP59239850 A JP 59239850A JP 23985084 A JP23985084 A JP 23985084A JP H0612947 B2 JPH0612947 B2 JP H0612947B2
- Authority
- JP
- Japan
- Prior art keywords
- hall element
- rotor
- winding
- magnet
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 claims description 24
- 239000012212 insulator Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Brushless Motors (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は回転子位置検出器を備えた突極形固定子鉄心を
有する無整流子モータに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commutatorless motor having a salient pole type stator core provided with a rotor position detector.
従来例の構成とその問題点 無整流子モータは、回転子位置検出器を備えて電機子の
整流タイミングを検出するのが通常用いられる方法であ
る。そして、その回転子位置検出器として、ホール素子
やホールＩＣが多く用いられている。Configuration of Conventional Example and Problems Thereof A non-commutator motor is usually used to detect a commutation timing of an armature by including a rotor position detector. Hall elements and Hall ICs are often used as the rotor position detector.
位置検出器の取付け方としては、音響機器などに用いら
れる軸方向に空隙を持つ扁平形モータの場合は、電機子
巻線と同一面上に固定することが出来、実用上の問題は
ないが、第１０図に示す様な径方向に空隙を持つシリン
ダタイプのモータの場合は、回転子位置検出器の固定方
法は、モータの構造を大きく左右する。As a method of mounting the position detector, in the case of a flat type motor having an air gap in the axial direction used for audio equipment, etc., it can be fixed on the same plane as the armature winding, but there is no practical problem. In the case of a cylinder type motor having a gap in the radial direction as shown in FIG. 10, the method of fixing the rotor position detector greatly affects the motor structure.
以下第１０図を参照して従来のシリンダタイプの無整流
子モータの構成を説明する。図に示す如く、固定子鉄心
１に電機子巻線２が施工され、その内側で回転子磁石３
が回転子ヨーク４に固定され、さらに回転子ヨーク４が
軸５に固定され、ブラケット６に設けた軸受７により回
転自在に支承されている。固定子鉄心１に固定されたプ
リント基板８には、回転子位置検出器としてのホール素
子９が固定され電気結線が行なわれている。The structure of a conventional cylinder type commutatorless motor will be described below with reference to FIG. As shown in the figure, an armature winding 2 is installed on a stator core 1 and a rotor magnet 3 is provided inside the armature winding 2.
Is fixed to a rotor yoke 4, and the rotor yoke 4 is fixed to a shaft 5, and is rotatably supported by a bearing 7 provided on a bracket 6. A Hall element 9 as a rotor position detector is fixed to the printed circuit board 8 fixed to the stator core 1 for electrical connection.
一方、ホール素子９を作動させる為の磁束変化を与える
位置検出用磁石１０が、その磁極をホール素子９と対向
させた形で、回転子磁石３と一体的に固定されている。On the other hand, a position detecting magnet 10 that gives a magnetic flux change for operating the Hall element 9 is integrally fixed to the rotor magnet 3 with its magnetic pole facing the Hall element 9.
以上の如き構成において、回転子磁石３の位置は位置検
出用磁石１０の磁極をホール素子９が感知する事で検出
する事が出来、その位置信号を駆動回路部へ伝達させ電
機子巻線に通電するタイミングを制御することにより、
モータを回転させることが可能である。In the configuration as described above, the position of the rotor magnet 3 can be detected by detecting the magnetic pole of the position detecting magnet 10 by the Hall element 9, and the position signal is transmitted to the drive circuit unit to the armature winding. By controlling the timing of energizing,
It is possible to rotate the motor.
しかし従来は、ホール素子９の足部をプリント基板８に
半田付けにより固定することにより磁束感知部の位置決
めを兼ねており、ホール素子９の足が細く、足ピッチが
小さい事から正確な位置決めができず、磁束感知部は左
右、および前後さらには上下方向の位置のバラツキが生
じ、正確な回転子の位置検出がしにくい。従って、駆動
回路部が本来必要としている整流タイミングとはずれた
整流タイミングを検出し、モータ個々の特性バラツキを
生じ、さらには特性の悪化、回転不良の現象を引き起す
可能姓があった。However, conventionally, the foot of the Hall element 9 is fixed to the printed circuit board 8 by soldering to also position the magnetic flux sensing section. Since the foot of the Hall element 9 is thin and the foot pitch is small, accurate positioning is possible. This is not possible, and the magnetic flux sensing unit has variations in position in the left-right direction, the front-back direction, and the vertical direction, which makes it difficult to accurately detect the rotor position. Therefore, there is a possibility that the rectification timing deviated from the rectification timing originally required by the drive circuit unit may be detected to cause characteristic variations among the motors, and further, the characteristics may be deteriorated and the rotation failure may occur.
なお、ホール素子の位置精度向上の従来例としては、樹
脂等で成形したホール素子位置決め部品を使用する方法
がある。第７図に、ホール素子位置決め部品１４にホー
ル素子９を装着した一例を示す。また、第８図，第９図
にプリント基板８にホール素子位置決め部品１４を固定
し、実際に組み込んだ例の断面図を示す。以下にホール
素子位置決め部品１４を使用する場合の欠点を示す。As a conventional example of improving the positional accuracy of the Hall element, there is a method of using a Hall element positioning component formed of resin or the like. FIG. 7 shows an example in which the hall element 9 is mounted on the hall element positioning component 14. Further, FIGS. 8 and 9 show sectional views of an example in which the hall element positioning component 14 is fixed to the printed board 8 and actually assembled. The disadvantages of using the Hall element positioning component 14 are shown below.
(1) 回転子の位置を正確に検出する為には、ホール素
子９は回転子位置検出用磁石１０に近い程よい。しか
し、ホール素子位置決め部品１４を使用すれば、スロッ
トインシュレータ１１のシュラウド部分の内径側の壁に
上記ホール素子位置決め部品１４が当たる。従って、上
記問題を解消する為には、巻線シュラウド部分を外径側
に逃がせないことを考えるとホール素子位置決め部品１
４を内径側にずらすか、スラスト方向にずらすかであ
る。前者を第８図、後者を第９図に示す。第８図よりわ
かる様に、ホール素子位置を内径側にずらすと、固定子
鉄心１と回転子磁石３の空隙を大きくする必要がある。
従って、回転子磁石３からの磁束を固定子鉄心１が受け
る量が減少し、モータの特性の悪化を招く。(1) In order to accurately detect the rotor position, it is better that the Hall element 9 is closer to the rotor position detecting magnet 10. However, if the Hall element positioning component 14 is used, the Hall element positioning component 14 contacts the inner diameter side wall of the shroud portion of the slot insulator 11. Therefore, in order to solve the above problem, considering that the winding shroud portion cannot escape to the outer diameter side, the Hall element positioning component 1
4 is to be shifted to the inner diameter side or to the thrust direction. The former is shown in FIG. 8 and the latter is shown in FIG. As can be seen from FIG. 8, if the position of the Hall element is shifted toward the inner diameter side, it is necessary to increase the gap between the stator core 1 and the rotor magnet 3.
Therefore, the amount of the magnetic flux from the rotor magnet 3 received by the stator core 1 is reduced, and the characteristics of the motor are deteriorated.
第９図は、ホール素子位置決め部品１４をスロットイン
シュレータの巻線シュラウド部分の壁の上まで逃がした
例である。ホール素子９の位置を固定子鉄心端面より大
きくずらした為に、回転子位置検出用磁石１０をスラス
ト方向に長くするか、もしくは、回転子磁石３と回転子
位置検出用磁石１０の間にスペーサをかませて、ホール
素子９の磁束感知部に回転子位置検出用磁石を対向させ
る必要がある。従って、モータ自体のスラスト方向の寸
法が大きくなるし、コストもアップする。FIG. 9 shows an example in which the Hall element positioning component 14 is released to above the wall of the winding shroud portion of the slot insulator. Since the position of the Hall element 9 is displaced from the end face of the stator by a large amount, the rotor position detecting magnet 10 is lengthened in the thrust direction, or a spacer is provided between the rotor magnet 3 and the rotor position detecting magnet 10. It is necessary to make the rotor position detection magnet face the magnetic flux sensing portion of the Hall element 9 by biting. Therefore, the size of the motor itself in the thrust direction is increased and the cost is increased.
(2) プリント基板８に、ホール素子位置決め部品１４
を固定する為の取り付け穴を設ける必要がある。従っ
て、プリント基板８の配線に制約を受ける。(2) Hall element positioning component 14 on printed circuit board 8
It is necessary to provide a mounting hole for fixing the. Therefore, the wiring of the printed circuit board 8 is restricted.
(3) 部品点数が増えることによりコストアップする。(3) The cost is increased by increasing the number of parts.
(4) ホール素子位置決め部品１４へのホール素子９の
装着および上記部品のプリント基板への固定の工数が増
え、コストアップとなる。(4) The number of steps for mounting the hall element 9 on the hall element positioning component 14 and fixing the component to the printed circuit board increases, resulting in an increase in cost.
発明の目的 本発明は、上記従来の問題点に鑑みてなされたもので、
回転子磁石位置検出器の位置決め精度を向上させ、効率
の良い運転状態を保たせる無整流子モータを提供しよう
とするものである。OBJECT OF THE INVENTION The present invention has been made in view of the above conventional problems,
An object of the present invention is to provide a non-commutator motor that improves the positioning accuracy of a rotor magnet position detector and maintains an efficient operating state.
発明の構成 本発明は、巻線シュラウドを一体成形したスロットイン
シュレータの巻線シュラウド部分の回転子磁石に対向す
る側に凹部を形成し、この凹部に位置検出素子（ホール
素子）を位置させることにより、回転子位置検出器の位
置精度を向上させるものである。According to the present invention, a recess is formed in the winding shroud portion of the slot insulator integrally formed with the winding shroud, the side facing the rotor magnet, and the position detecting element (hall element) is positioned in this recess. , The position accuracy of the rotor position detector is improved.
実施例の説明 本発明の一実施例として、巻線シュラウドを一体成形し
たスロットインシュレータを備え、回転子位置検出器と
してホール素子を有する内転形の無整流子モータについ
て説明する。第１図に上記実施例の無整流子モータの断
面図を示す。第２図は固定子鉄心１に巻線シュラウド部
１２を一体成形したスロットインシュレータ１１を装着
した際の斜視図を示す。また、第３図はスロットインシ
ュレータのホール素子取り付け側から見た図、第４図は
第３図のＡ−Ａ線断面図をそれぞれ示す。Description of Embodiments As an embodiment of the present invention, an inversion type commutatorless motor having a slot insulator integrally formed with a winding shroud and having a Hall element as a rotor position detector will be described. FIG. 1 shows a sectional view of the commutatorless motor of the above embodiment. FIG. 2 is a perspective view of the stator core 1 when the slot insulator 11 in which the winding shroud portion 12 is integrally molded is mounted. Further, FIG. 3 is a view seen from the Hall element mounting side of the slot insulator, and FIG. 4 is a cross-sectional view taken along the line AA of FIG.
実施例は固定子鉄心１にスロットインシュレータ１１を
装着し、そのティース部に巻線２を集中巻きにて施す。
電気配線を施したプリント基板８の所定の位置にホール
素子９の足部をはんだ付けにより固定し、ホール素子９
の感知部を巻線シュラウド部分１２の凹部１３に挿入す
る。プリント基板８には取り付け用穴が設けてあり、ス
ロットインシュレータ１１に設けた突起（図示せず）に
て固定できる構成になっている。ホール素子９は、上記
巻線シュラウド部分１２に設けた凹部１３の底面１３ａ
にてスラスト方向の位置決めが可能となる。また、凹部
側面１３ｂでホール素子９の円周上の角度の位置決め、
凹部背面１３ｃにてホール素子の外径方向への倒れを防
止している。以上の様に巻線シュラウド部分１２に設け
られた凹部１３でホール素子９のスラスト方向，径方
向，外周方向の角度の３方向の位置決めのできる無整流
子モータの固定子が得られる。In the embodiment, the slot insulator 11 is mounted on the stator core 1, and the winding 2 is concentratedly wound around the tooth portion thereof.
The foot portion of the hall element 9 is fixed to a predetermined position of the printed circuit board 8 on which electric wiring is provided by soldering,
Is inserted into the recess 13 of the winding shroud portion 12. The printed circuit board 8 is provided with mounting holes so that it can be fixed by a protrusion (not shown) provided on the slot insulator 11. The Hall element 9 has a bottom surface 13 a of a recess 13 provided in the winding shroud portion 12.
Positioning in the thrust direction is possible with. In addition, positioning of the angle on the circumference of the Hall element 9 by the recess side surface 13b,
The back surface 13c of the concave portion prevents the Hall element from falling in the outer diameter direction. As described above, the stator of the commutatorless motor capable of positioning the Hall element 9 in the thrust direction, the radial direction and the outer peripheral direction in the three directions by the recess 13 provided in the winding shroud portion 12 is obtained.
第５図は本発明の他の実施例を示すもので、ホール素子
９の内径側への倒れを規制するため、巻線シュラウド１
２に規制１２ａを備えたものである。FIG. 5 shows another embodiment of the present invention. In order to prevent the Hall element 9 from falling toward the inner diameter side, the winding shroud 1
2 is provided with the regulation 12a.
なお、第１図に示す構成においては、固定子部は合成樹
脂にて一体モールド成形されている。In the structure shown in FIG. 1, the stator portion is integrally molded with synthetic resin.
また、電気絶縁性樹脂よりなるスロットインシュレータ
１１は、固定子鉄心１と一体成形してもよい。Further, the slot insulator 11 made of an electrically insulating resin may be integrally formed with the stator core 1.
発明の効果 以上説明した様に本発明は、スロットインシュレータの
巻線シュラウド部分の回転子位置検出磁石の対向する側
に適切な寸法の凹部を設け、この凹部に位置検出素子
（ホール素子）を位置させるので、以下の効果が得られ
る。EFFECTS OF THE INVENTION As described above, according to the present invention, a recess having an appropriate size is provided on the opposite side of the rotor position detecting magnet of the winding shroud portion of the slot insulator, and the position detecting element (hall element) is located in this recess. Therefore, the following effects are obtained.
(1) 巻線シュラウドに設けた凹部へホール素子を挿入
し、凹部の側面にて円周方向、底面にてスラスト方向、
背面にて外径方向の規制ができホール素子の位置精度が
向上する。(1) Insert the Hall element into the recess provided in the winding shroud, and the side surface of the recess is in the circumferential direction, the bottom surface is in the thrust direction,
The rear surface can be regulated in the outer diameter direction, and the position accuracy of the Hall element can be improved.
(2) 上記の効果により正確な整流タイミング信号を作
り出すホール出力電圧を得ることができ、正常な運転を
保持し、個々のモータの特性のバラツキも減少する。(2) Due to the above effects, it is possible to obtain a Hall output voltage that produces an accurate rectification timing signal, maintain normal operation, and reduce variations in the characteristics of individual motors.
(3) 巻線シュラウドの内径側壁と固定子鉄心内径との
間隔がせまくても凹部を設けることによりホール素子は
回転子位置検出磁石と適正な隙間を持って収納できるの
で固定子鉄心と回転子磁石の空隙は小さくできる。(3) Even if the inner diameter side wall of the winding shroud and the inner diameter of the stator core are narrow, the Hall element can be housed with a proper gap between the rotor position detection magnet and the rotor position detection magnet by providing a recess, so the stator core and rotor The air gap of the magnet can be made small.
(4) 上記効果によりモータのスラスト方向への拡張は
さけられる。(4) The above effect prevents expansion of the motor in the thrust direction.
(5) ホール素子位置決め部品を省略できる。これに伴
いホール素子のホール素子位置決め部品への装着および
上記部品のプリント基板へ固定する工数さらには上記部
品の管理工数が省略できコストダウンとなる。(5) Hall element positioning parts can be omitted. Along with this, the number of steps for mounting the hall element to the hall element positioning component and for fixing the component to the printed circuit board, and the number of man-hours for managing the component can be omitted, resulting in cost reduction.
なお以上は、回転子位置検出器としてホール素子を用い
た場合について述べたが、ホールＩＣ ＭＲ素子等の他
の検出器についても同様の効果が得られる。また、本実
施例で説明した内転形だけでなく外転形モータについて
も同様の効果が得られる。Although the case where the Hall element is used as the rotor position detector has been described above, the same effect can be obtained with other detectors such as the Hall IC MR element. Further, the same effect can be obtained not only in the inner rotor type motor described in this embodiment but also in the outer rotor type motor.
第１図は本発明の一実施例を示す無整流子モータの断面
図、第２図は同モータに用いるスロットインシュレータ
の斜視図、第３図は同インシュレータのホール素子取り
付け側より見た図、第４図は第３図のＡ−Ａ線断面図、
第５図は本発明の他の実施例を示す固定子の断面図、第
６図は同巻線シュラウドの斜視図、第７図はホール素子
位置決め部品にホール素子を装着した状態を示す斜視
図、第８図，第９図はホール素子位置決め部品を用いた
場合の固定子の断面図、第１０図は従来例の断面図であ
る。 １……固定子鉄心、２……巻線、３……回転子磁石、９
……ホール素子、１０……位置検出用磁石、１１……ス
ロットインシュレータ、１２……巻線シュラウド部、１
３……凹部。FIG. 1 is a sectional view of a commutator-free motor showing an embodiment of the present invention, FIG. 2 is a perspective view of a slot insulator used in the motor, and FIG. 3 is a view of the same as seen from the Hall element mounting side of the insulator. 4 is a sectional view taken along the line AA of FIG.
FIG. 5 is a sectional view of a stator showing another embodiment of the present invention, FIG. 6 is a perspective view of the same winding shroud, and FIG. 7 is a perspective view showing a state in which a Hall element is mounted on a Hall element positioning component. , FIG. 8 and FIG. 9 are sectional views of the stator when the Hall element positioning component is used, and FIG. 10 is a sectional view of a conventional example. 1 ... Stator core, 2 ... Winding, 3 ... Rotor magnet, 9
... Hall element, 10 ... Position detection magnet, 11 ... Slot insulator, 12 ... Winding shroud section, 1
3 ... recess.
Claims (1)
体成形したスロットインシュレータが施された固定子鉄
心と、前記固定子鉄心に前記スロットインシュレータを
介して巻装された巻線と、前記固定子鉄心に対向して設
けた回転子磁石を有する回転子と、この回転子の位置を
検出する位置検出器とを備えた無整流子モータにおい
て、前記スロットインシュレータの巻線シュラウド部分
の回転磁石に対向する側に凹部を設け、この凹部に位置
検出素子を位置させてなる無整流子モータ。1. A stator core provided with a slot insulator integrally formed with a winding shroud of an electrically insulating resin, a winding wound around the stator core via the slot insulator, and the stator. In a non-commutator motor including a rotor having a rotor magnet provided to face an iron core, and a position detector for detecting the position of the rotor, the rotor magnet is opposed to the rotary magnet in the winding shroud portion of the slot insulator. A commutatorless motor having a concave portion on the side where the position detecting element is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59239850A JPH0612947B2 (en) | 1984-11-14 | 1984-11-14 | No commutator motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59239850A JPH0612947B2 (en) | 1984-11-14 | 1984-11-14 | No commutator motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61121760A JPS61121760A (en) | 1986-06-09 |
| JPH0612947B2 true JPH0612947B2 (en) | 1994-02-16 |
Family
ID=17050799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59239850A Expired - Lifetime JPH0612947B2 (en) | 1984-11-14 | 1984-11-14 | No commutator motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612947B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6425875U (en) * | 1987-07-29 | 1989-02-14 | ||
| JPS6437376U (en) * | 1987-08-31 | 1989-03-07 | ||
| JPH01123473U (en) * | 1988-02-15 | 1989-08-22 | ||
| JPH0750858Y2 (en) * | 1989-10-14 | 1995-11-15 | 草津電機株式会社 | Mounting device for rotor position detection element in electric motor |
| CN2699018Y (en) * | 2004-02-02 | 2005-05-11 | 鸿富锦精密工业（深圳）有限公司 | Fan motor |
| JP2007318987A (en) * | 2006-04-28 | 2007-12-06 | Nippon Densan Corp | Motor and pump comprising magnetic sensor, method of manufacturing stator, and manufacturing method of motor and pump |
| JP5947637B2 (en) | 2012-06-29 | 2016-07-06 | オリエンタルモーター株式会社 | Mounting method and mounting structure of sensor board of brushless motor |
| US20190140532A1 (en) * | 2013-10-11 | 2019-05-09 | Renun Mechanical & Electrical Co., Ltd | Magnetic circuit structure of BLDC motor and permanent magnet embedded rotor thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56148165A (en) * | 1980-04-17 | 1981-11-17 | Hitachi Ltd | Brushless motor |
| JPS57170682U (en) * | 1981-04-22 | 1982-10-27 |
-
1984
- 1984-11-14 JP JP59239850A patent/JPH0612947B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61121760A (en) | 1986-06-09 |
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