JPH0851745A - Miniature synchronous motor - Google Patents
Miniature synchronous motorInfo
- Publication number
- JPH0851745A JPH0851745A JP18504094A JP18504094A JPH0851745A JP H0851745 A JPH0851745 A JP H0851745A JP 18504094 A JP18504094 A JP 18504094A JP 18504094 A JP18504094 A JP 18504094A JP H0851745 A JPH0851745 A JP H0851745A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- output gear
- synchronous motor
- stator core
- clutch teeth
- 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.)
- Withdrawn
Links
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 16
- 239000000696 magnetic material Substances 0.000 claims description 8
- 230000005281 excited state Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000013011 mating Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は回転伝達クラッチ機構を
有した小型同期モータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small synchronous motor having a rotation transmission clutch mechanism.
【０００２】[0002]
【従来の技術】従来、この種の小型同期モータとして
は、図７に示すようなものがあった。すなわち、カップ
状のモータケース２１底部の鉄板を直角に切り曲げて、
内側にロータ２２と対向する第１の磁極２３を作り、磁
極の外側に単相コイル２４を置き、モータケース開口部
に鉄板を直角に切り曲げて、内側にロータ２２と対向す
る第２の磁極２５を作り、磁極の内側には、外周を多極
に着磁したロータ２２を置き、上記ロータ２２と出力軸
２６とにかみ合う歯車輪列を構成している小型同期モー
タが一般に広く使用されている。2. Description of the Related Art Conventionally, as a small synchronous motor of this type, there has been one as shown in FIG. That is, by cutting the iron plate at the bottom of the cup-shaped motor case 21 at a right angle,
A first magnetic pole 23 facing the rotor 22 is formed on the inside, a single-phase coil 24 is placed on the outside of the magnetic pole, an iron plate is cut at a right angle in the motor case opening, and a second magnetic pole facing the rotor 22 is inside. 25, a rotor 22 having a multi-pole magnetized outer circumference is placed inside the magnetic poles, and a small synchronous motor is generally widely used, which constitutes a gear train that meshes with the rotor 22 and the output shaft 26. There is.
【０００３】また、モータ回転をクラッチ機構を使用し
て伝達するときは、別にソレノイドコイルを配設し、こ
のソレノイドコイルを励磁し、その時の磁力でモータ出
力軸と負荷軸の間に挿入して連結する外部のクラッチ伝
達装置を操作させる方式としていた。Further, when transmitting the rotation of the motor using a clutch mechanism, a solenoid coil is separately provided, the solenoid coil is excited, and the magnetic force at that time is inserted between the motor output shaft and the load shaft. The method is to operate an external clutch transmission device to be connected.
【０００４】[0004]
【発明が解決しようとする課題】したがって、上記技術
では外部クラッチ機構を動作させるためにソレノイドコ
イルを必要としており、コストアップになると共に、小
型化に制約があり、さらにロータの回転とクラッチ動作
の同期性がとれないといった不具合があった。本発明
は、以上のような問題に対処してなされたものであり、
クラッチ機構動作させる上でクラッチ機構動作専用のソ
レノイドコイルの使用を排除した、回転伝達クラッチ機
構を有した小型同期モータを提供することを目的として
いる。Therefore, in the above technique, the solenoid coil is required to operate the external clutch mechanism, resulting in an increase in cost and a restriction on downsizing, and further, the rotation of the rotor and the clutch operation. There was a problem that synchronization could not be achieved. The present invention has been made to address the above problems,
An object of the present invention is to provide a small synchronous motor having a rotation transmission clutch mechanism, which eliminates the use of a solenoid coil dedicated to the clutch mechanism operation in operating the clutch mechanism.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、励磁コイルを巻回したステータコアと、
内部にマグネットを内蔵し周面にＮＳ極が等間隔に配列
されたロータコアを有するロータとを備え、該ロータの
回転を出力歯車を介して外部装置に伝達するようにした
小型同期モータにおいて、上記ロータに上記出力歯車に
設けたクラッチ歯と係脱するクラッチ歯を一体的に形成
するとともに、上記ロータを回転軸に対して軸方向に移
動可能に支持し、上記ステータコアの励磁コイルが非励
磁状態にあっては、上記ロータのクラッチ歯が上記出力
歯車のクラッチ歯と離間して噛合しない方向に付勢する
バネ部材を配設したことを特徴とし、また上記ロータコ
アに対向する上記ステータコアの中央部を、上記ロータ
コア側に近接させるように折り曲げて形成し、また上記
ロータの出力歯車側の側方に設けた側方板を磁性材と
し、上記ロータの出力歯車側と反対側に設けた側方板を
非磁性材とし、また上記ロータの出力歯車側の側方に設
けた側方板をステータコアと一体としたことを特徴とす
るものである。In order to achieve the above object, the present invention provides a stator core around which an exciting coil is wound,
And a rotor having a rotor core in which magnets are built in and NS poles are arranged at equal intervals on a peripheral surface, and the rotation of the rotor is transmitted to an external device via an output gear. The rotor has integrally formed clutch teeth that engage and disengage with the clutch teeth provided on the output gear, and supports the rotor movably in the axial direction with respect to the rotating shaft, and the exciting coil of the stator core is in a non-excited state. There is provided a spring member for urging the clutch teeth of the rotor away from the clutch teeth of the output gear so as not to mesh with each other, and the central portion of the stator core facing the rotor core. Is formed by bending so as to be close to the rotor core side, and the side plate provided on the side of the output gear side of the rotor is made of a magnetic material, and The side plate provided on the opposite side of the gear side and a non-magnetic material and is characterized in that the stator core and the integral output gear side side plate provided on the side of the rotor.
【０００６】[0006]
【作用】モータが通電されコイルが励磁されるとロータ
コアとステータコアの間、およびロータコアとステータ
コアとしての機能を有する側方板の間に磁力が発生し、
かつ吸引力が発生し、ロータがバネ部材であるスプリン
グ力に打ち勝ってスラスト方向に動きながら回転し、減
速部である出力歯車のクラッチ部に結合しロータの回転
が外部ギアーに回転伝達される。When the motor is energized and the coil is excited, a magnetic force is generated between the rotor core and the stator core, and between the side plates that function as the rotor core and the stator core.
In addition, a suction force is generated, the rotor overcomes the spring force of the spring member and rotates while moving in the thrust direction, and is coupled to the clutch portion of the output gear that is the speed reduction portion to transmit the rotation of the rotor to the external gear.
【０００７】また、通電がオフされた時は、上記ロータ
コアとステータコアの間、およびロータコアとステータ
コアとしての機能を有する側方板の間の磁力がなくなる
ため、吸引力がなくなり、スプリング力によりクラッチ
がはずれ、外部ギアーの回転はストップする。すなわ
ち、モータの出力軸と駆動歯車の伝達のみでなく、回転
伝達クラッチ機構としての働きを有する。Further, when the energization is turned off, the magnetic force between the rotor core and the stator core and between the side plates having the functions of the rotor core and the stator core disappears, so that the attraction force disappears and the clutch is disengaged by the spring force. The rotation of the external gear stops. That is, it functions not only as a transmission between the output shaft of the motor and the drive gear but also as a rotation transmission clutch mechanism.
【０００８】[0008]
【実施例】以下、図面を参照して本発明の実施例を詳細
に説明する。図１〜図５は本発明の実施例を示すもので
ある。ロータ３は図５に示すように円板形磁石１の両面
にＮ極およびＳ極を着磁し、その両着磁面に磁石径より
大きい歯車状の鉄板を張着し、外径の歯部のみ直角に内
側に折り曲げ、Ｎ極の歯２とＳ極の歯２を交互に、かつ
等間隔に対向配置させ、それぞれのＮ極の歯２とＳ極の
歯２をロータコア２としたものである。Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 5 show an embodiment of the present invention. As shown in FIG. 5, the rotor 3 has N-poles and S-poles magnetized on both sides of the disk-shaped magnet 1, and a gear-shaped iron plate larger than the magnet diameter is attached to both magnetized surfaces to form teeth with an outer diameter. Only the portions are bent inward at right angles, the N pole teeth 2 and the S pole teeth 2 are arranged alternately and oppositely at equal intervals, and the N pole teeth 2 and the S pole teeth 2 are used as the rotor core 2. Is.
【０００９】ステータコア６は図３に示すように側方板
９のロータ側側面に複数個の突起部を直角に切り起こ
し、上記突起部をステータコア６としている。なお、ス
テータコア６のロータコア２に近接するコア幅は、励磁
されたとき吸引力が一番強いようにロータコア２の幅Ｃ
と同一幅となるように２段に折り曲げた構造としてい
る。また、ロータ３の側面と対向するステータの材質は
通電時スラスト方向に動く側の側方板９の材質を磁性材
とし、反対側の側方板１４の材質を非磁性材とするAs shown in FIG. 3, the stator core 6 has a plurality of protrusions cut and raised at right angles on the side surface of the side plate 9 on the rotor side, and the protrusions are used as the stator core 6. The core width of the stator core 6 close to the rotor core 2 is the width C of the rotor core 2 so that the attraction force is the strongest when excited.
It has a structure in which it is folded in two steps so as to have the same width as the above. As for the material of the stator facing the side surface of the rotor 3, the material of the side plate 9 on the side that moves in the thrust direction when energized is a magnetic material, and the material of the side plate 14 on the opposite side is a non-magnetic material.
【００１０】クラッチ部は回転軸１２に、内部にスプリ
ング８を有したロータ中空軸受け１５を介してロータ３
が装着されており、上記ロータ中空軸受け１５の先端が
クラッチ歯５ｂを形成し、同じく上記回転軸１２に出力
歯車４が装着されており、上記出力歯車４のロータ側先
端がもう一方のクラッチ歯５ａを形成している。また、
上記クラッチ歯５ａ，５ｂは図４に示すように凹凸の形
状の先端部を噛み合わせたギアー状のものである。ま
た、上記スプリングはロータのクラッチ歯５ｂと出力歯
車のクラッチ歯５ａを離間させる方向に付勢力を持つよ
うに配設され、スプリング効果を有するバネ部材であれ
ば、必要に応じ変更ができる。The clutch portion is provided on the rotating shaft 12 via a rotor hollow bearing 15 having a spring 8 inside.
Is mounted, the tip of the rotor hollow bearing 15 forms a clutch tooth 5b, and the output gear 4 is also mounted on the rotary shaft 12, and the tip of the output gear 4 on the rotor side is the other clutch tooth. 5a is formed. Also,
As shown in FIG. 4, the clutch teeth 5a and 5b are gear-shaped, in which the tip ends of the uneven shape are meshed. Further, the spring is arranged so as to exert a biasing force in a direction in which the clutch tooth 5b of the rotor and the clutch tooth 5a of the output gear are separated from each other, and a spring member having a spring effect can be changed as necessary.
【００１１】本発明の小型同期モータの構成は円筒状の
モータケース１１と回転軸１２をセンターに軸止した側
方板１４を底面に固着し、リング状のボビン１０に巻か
れた励磁コイル７を内設し、上記回転軸１２にスプリン
グを内設したロータ中空軸受け１５を介しロータ３を軸
方向に移動可能なように挿入し、同じく回転軸１２に出
力歯車４を挿入する。さらにステータコア６を有する側
方板９を上記本体に装着し構成されている。The structure of the small synchronous motor of the present invention is such that the excitation coil 7 wound on the ring-shaped bobbin 10 has the cylindrical motor case 11 and the side plate 14 having the rotary shaft 12 centered on the center fixed to the bottom. The rotor 3 is inserted movably in the axial direction through the rotor hollow bearing 15 in which a spring is provided in the rotary shaft 12, and the output gear 4 is also inserted in the rotary shaft 12. Further, a side plate 9 having a stator core 6 is mounted on the main body.
【００１２】次に、実施例の動作状態を図１および図２
によって説明する。図１は無通電状態であり、クラッチ
歯５ａ，５ｂは離れている。この状態で、コイル７が励
磁されると、ステータコア６とロータコア２の間で磁束
が飛び矢印方向の吸引力Ａが発生する。さらに側方板９
とロータコア２の間にも漏れ磁束が飛ぶために、この間
でも吸引力Ｂが発生する。Next, the operation state of the embodiment will be described with reference to FIGS.
It will be explained by. FIG. 1 shows a non-energized state, and the clutch teeth 5a and 5b are separated. When the coil 7 is excited in this state, a magnetic flux jumps between the stator core 6 and the rotor core 2 to generate an attractive force A in the direction of the arrow. Side plate 9
Since the leakage magnetic flux also flows between the rotor core 2 and the rotor core 2, the attractive force B is generated also during this period.
【００１３】このＡとＢがスプリング８の力に打ち勝っ
てロータコア２はギアー側に吸引され、図２に示すよう
にクラッチ部５ａ，５ｂが結合される。この時、ロータ
３はスプリング力とＡとＢの吸引力が釣り合うか、また
はクラッチ部の度当たりまでロータ３はギアー側に動
く。なお、励磁した場合には磁性材である側方板に非励
磁の場合より近づくので吸引力が大きくなり、スプリン
グの反発力も大きくなるが、これと相殺される。また、
コイルが励磁されると同時に、この吸引力と回転力が同
時に発生するため、クラッチの結合と共にギアーによつ
て動力が伝達される。These A and B overcome the force of the spring 8 and the rotor core 2 is attracted to the gear side, and the clutch portions 5a and 5b are engaged as shown in FIG. At this time, the rotor 3 moves to the gear side until the spring force and the attraction forces of A and B are balanced or the clutch portion hits. It should be noted that when excited, the side plate, which is a magnetic material, comes closer to the side plate than in the case of non-excited state, so that the attracting force increases and the repulsive force of the spring also increases, but this is offset. Also,
At the same time that the coil is excited, the attractive force and the rotational force are generated at the same time, so that the power is transmitted by the gear as well as the engagement of the clutch.
【００１４】なお、ギアーは説明上１組しか図示されて
いないが多段に構成され、必要速度に減速されて伝達さ
れる。Incidentally, although only one set of gears is shown for the sake of explanation, the gears are constructed in multiple stages and are transmitted at a reduced speed to a required speed.
【００１５】図２の状態で、かつクラッチが噛み合って
いる状態で、コイルの励磁が解かれると、吸引力Ａ，Ｂ
がなくなるため、スプリング力によりロータ３は非磁性
材の側方板１４側に押し戻される。そのためクラッチ５
ａ，５ｂの噛み合いがはずれ出力軸からの逆トルクによ
って空転し、出力軸は元に戻される。In the state of FIG. 2 and when the clutch is engaged, when the coil is de-excited, the attractive forces A and B are generated.
, The rotor 3 is pushed back toward the side plate 14 of the non-magnetic material by the spring force. Therefore clutch 5
The meshing of a and 5b is disengaged and the output shaft is returned to its original state by idling by the reverse torque from the output shaft.
【００１６】次に図６に示す本発明の異なる実施例につ
き説明する。なお、本発明の異なる実施例の説明に当た
って、前記本発明の実施例と同一構成部分には同一符号
を付して重複する説明を省略する。図６の本発明の異な
る実施例に於いて、前記本発明の実施例と主に異なる点
は、ステータコア部６を側方板９のロータ３側側面に複
数個の突起部を直角に切り起こし、この突起部をステー
タコア６としており、前記本発明では、このステータコ
ア６を２段におり曲げた構造としている点が異なる。こ
のように構成することにより、加工が容易でコスト削減
になり、ロータコア２との隙間精度が出易くなる。Next, a different embodiment of the present invention shown in FIG. 6 will be described. In the description of the different embodiments of the present invention, the same components as those of the embodiments of the present invention will be designated by the same reference numerals and overlapping description will be omitted. In the different embodiment of the present invention shown in FIG. 6, the main difference from the embodiment of the present invention is that the stator core portion 6 is cut and raised at right angles to the side surface of the side plate 9 on the rotor 3 side. The projecting portion is the stator core 6, and the present invention is different in that the stator core 6 has a structure in which the stator core 6 is bent in two stages. With this configuration, the processing is easy, the cost is reduced, and the accuracy of the gap with the rotor core 2 is easily obtained.
【００１７】[0017]
【発明の効果】ロータが通電時、スラスト方向に力を発
生し、クラッチ機構として使用できるため、従来ソレノ
イドコイルを使用していたクラッチ機構動作用のソレノ
イドコイルが不要となるため、部品削減によるコスト低
減となる。また、小型形状にすることが可能であり、ス
ペースに余裕ができる。さらに、ロータが回転すると同
時にクラッチ動作ができ、確実な回転伝達ができる。When the rotor is energized, a force is generated in the thrust direction and the rotor can be used as a clutch mechanism. Therefore, the solenoid coil for operating the clutch mechanism, which has conventionally used a solenoid coil, is not required, and the cost can be reduced by reducing parts. It will be reduced. In addition, it is possible to make a compact shape, so that a space can be provided. Further, the clutch can be operated simultaneously with the rotation of the rotor, and reliable rotation transmission can be performed.
【００１８】また、本発明の回転伝達クラッチ機構を有
した小型同期モータは換気扇のシャッターユニットなど
に用いることができる他、一般の回転伝達クラッチ機構
として各種用途に広く用いることができる。Further, the small synchronous motor having the rotation transmission clutch mechanism of the present invention can be used for a shutter unit of a ventilation fan and the like, and can also be widely used for various purposes as a general rotation transmission clutch mechanism.
【図１】本発明に係わる小型同期モータの縦断面図であ
る。FIG. 1 is a vertical cross-sectional view of a small synchronous motor according to the present invention.
【図２】本発明に係わる小型同期モータの縦断面図であ
る。FIG. 2 is a vertical cross-sectional view of a small synchronous motor according to the present invention.
【図３】本発明に係わる側方板の要部斜視図である。FIG. 3 is a perspective view of a main part of a side plate according to the present invention.
【図４】本発明に係わるクラッチ部の要部斜視図であ
る。FIG. 4 is a perspective view of a main part of a clutch unit according to the present invention.
【図５】本発明に係わるロータの要部斜視図である。FIG. 5 is a perspective view of a main part of a rotor according to the present invention.
【図６】本発明の異なる実施例を示す縦断面図である。FIG. 6 is a vertical sectional view showing another embodiment of the present invention.
【図７】従来の小型同期モータの縦断面図である。FIG. 7 is a vertical sectional view of a conventional small synchronous motor.
１ マグネット ２ ロータコア ３ ロータ ４ 出力歯車 ５ａ，５ｂ クラッチ歯 ６ ステータコア ７ 励磁コイル ８ バネ部材 ９，１４ 側方板 1 Magnet 2 Rotor Core 3 Rotor 4 Output Gear 5a, 5b Clutch Teeth 6 Stator Core 7 Excitation Coil 8 Spring Member 9, 14 Side Plate
Claims (4)
内部にマグネットを内蔵し周面にＮＳ極が等間隔に配列
されたロータコアを有するロータとを備え、該ロータの
回転を出力歯車を介して外部装置に伝達するようにした
小型同期モータにおいて、上記ロータに上記出力歯車に
設けたクラッチ歯と係脱するクラッチ歯を一体的に形成
するとともに、上記ロータを回転軸に対して軸方向に移
動可能に支持し、上記ステータコアの励磁コイルが非励
磁状態にあっては、上記ロータのクラッチ歯が上記出力
歯車のクラッチ歯と離間して噛合しない方向に付勢する
バネ部材を配設したことを特徴とする小型同期モータ。1. A stator core around which an exciting coil is wound,
And a rotor having a rotor core in which magnets are built in and NS poles are arranged at equal intervals on a peripheral surface, and the rotation of the rotor is transmitted to an external device via an output gear. The rotor has integrally formed clutch teeth that engage and disengage with the clutch teeth provided on the output gear, and supports the rotor movably in the axial direction with respect to the rotating shaft, and the exciting coil of the stator core is in a non-excited state. In this case, the small synchronous motor is characterized in that a spring member is arranged to urge the clutch teeth of the rotor away from the clutch teeth of the output gear so as not to engage with each other.
コアの中央部を、上記ロータコア側に近接させるように
折り曲げて形成した請求項１記載の小型同期モータ。2. The small synchronous motor according to claim 1, wherein a central portion of the stator core facing the rotor core is bent so as to be close to the rotor core side.
側方板を磁性材とし、上記ロータの出力歯車側と反対側
に設けた側方板を非磁性材とした請求項１記載の小型同
期モータ。3. The side plate provided on the side of the output gear side of the rotor is made of a magnetic material, and the side plate provided on the side opposite to the output gear side of the rotor is made of a non-magnetic material. Small synchronous motor.
側方板をステータコアと一体とした請求項３記載の小型
同期モータ。4. The small synchronous motor according to claim 3, wherein a side plate provided laterally on the output gear side of the rotor is integrated with a stator core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18504094A JPH0851745A (en) | 1994-08-08 | 1994-08-08 | Miniature synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18504094A JPH0851745A (en) | 1994-08-08 | 1994-08-08 | Miniature synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0851745A true JPH0851745A (en) | 1996-02-20 |
Family
ID=16163747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18504094A Withdrawn JPH0851745A (en) | 1994-08-08 | 1994-08-08 | Miniature synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0851745A (en) |
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|---|---|---|---|---|
| WO2005112230A1 (en) | 2004-05-18 | 2005-11-24 | Seiko Epson Corporation | Motor |
| US7095155B2 (en) | 2004-03-12 | 2006-08-22 | Seiko Epson Corporation | Motor and drive control system thereof |
| US7126309B1 (en) | 2004-05-18 | 2006-10-24 | Seiko Epson Corporation | Motor |
| US7279858B2 (en) | 2004-05-18 | 2007-10-09 | Seiko Epson Corporation | Drive regenerative control system |
| US7315147B2 (en) | 2004-03-02 | 2008-01-01 | Seiko Epson Corporation | Motor and motor drive system |
| US7446447B2 (en) | 2002-11-18 | 2008-11-04 | Seiko Epson Corporation | Magnetic structure and motor employing said magnetic structure, and driver comprising said motor |
| CN108649743A (en) * | 2018-06-22 | 2018-10-12 | 甄红 | Large torque energy-saving motor |
| CN110855040A (en) * | 2019-11-22 | 2020-02-28 | 奇瑞汽车股份有限公司 | Motor rotor structure and permanent magnet synchronous motor |
-
1994
- 1994-08-08 JP JP18504094A patent/JPH0851745A/en not_active Withdrawn
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7777381B2 (en) | 2002-11-18 | 2010-08-17 | Seiko Epson Corporation | Magnetic structure and motor employing said magnetic structure, and driver comprising said motor |
| US7446447B2 (en) | 2002-11-18 | 2008-11-04 | Seiko Epson Corporation | Magnetic structure and motor employing said magnetic structure, and driver comprising said motor |
| US7315147B2 (en) | 2004-03-02 | 2008-01-01 | Seiko Epson Corporation | Motor and motor drive system |
| US7956562B2 (en) | 2004-03-02 | 2011-06-07 | Seiko Epson Corporation | Motor and motor drive system |
| US7573226B2 (en) | 2004-03-02 | 2009-08-11 | Seiko Epson Corporation | Motor and motor drive system |
| US7884563B2 (en) | 2004-03-12 | 2011-02-08 | Seiko Epson Corporation | Motor and drive control system thereof |
| US7211974B2 (en) | 2004-03-12 | 2007-05-01 | Seiko Epson Corporation | Motor and drive control system thereof |
| US7095155B2 (en) | 2004-03-12 | 2006-08-22 | Seiko Epson Corporation | Motor and drive control system thereof |
| US8102135B2 (en) | 2004-03-12 | 2012-01-24 | Seiko Epson Corporation | Motor and drive control system thereof |
| US7436137B2 (en) | 2004-05-18 | 2008-10-14 | Seiko Epson Corporation | Drive regenerative control system |
| US7279858B2 (en) | 2004-05-18 | 2007-10-09 | Seiko Epson Corporation | Drive regenerative control system |
| US7595599B2 (en) | 2004-05-18 | 2009-09-29 | Seiko Epson Corporation | Drive regenerative control system |
| US7126309B1 (en) | 2004-05-18 | 2006-10-24 | Seiko Epson Corporation | Motor |
| EP2264874A2 (en) | 2004-05-18 | 2010-12-22 | Seiko Epson Corporation | Electric machine |
| WO2005112230A1 (en) | 2004-05-18 | 2005-11-24 | Seiko Epson Corporation | Motor |
| CN108649743A (en) * | 2018-06-22 | 2018-10-12 | 甄红 | Large torque energy-saving motor |
| CN110855040A (en) * | 2019-11-22 | 2020-02-28 | 奇瑞汽车股份有限公司 | Motor rotor structure and permanent magnet synchronous motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20011106 |