JP2001245458A - Electric motor and power steering device using this motor - Google Patents
Electric motor and power steering device using this motorInfo
- Publication number
- JP2001245458A JP2001245458A JP2000051880A JP2000051880A JP2001245458A JP 2001245458 A JP2001245458 A JP 2001245458A JP 2000051880 A JP2000051880 A JP 2000051880A JP 2000051880 A JP2000051880 A JP 2000051880A JP 2001245458 A JP2001245458 A JP 2001245458A
- Authority
- JP
- Japan
- Prior art keywords
- brush
- commutator
- electric motor
- steering
- contact
- 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.)
- Granted
Links
Landscapes
- Power Steering Mechanism (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Current Collectors (AREA)
- Dc Machiner (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は回転子に設けた整流
子と接触するブラシ、該ブラシを保持するブラシホルダ
を備えた電動モータ及びこの電動モータを用いて操舵手
段の操舵を補助する電動式舵取装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brush which comes into contact with a commutator provided on a rotor, an electric motor having a brush holder for holding the brush, and an electric type which assists steering of a steering means using the electric motor. It relates to a steering device.
【０００２】[0002]
【従来の技術】車両用の電動式舵取装置としては、例え
ば入力軸及び該入力軸にトーションバーを介して同軸的
に繋がる出力軸の相対角変位によって前記入力軸に加わ
る操舵トルクを検出するトルクセンサと、該トルクセン
サが検出したトルクに基づいて操舵補助用の電動モータ
を駆動制御する制御部とを備え、操舵輪の回転に応じた
舵取機構の動作を前記電動モータの回転により補助し、
舵取りのための運転者の労力負担を軽減するように構成
されている。2. Description of the Related Art As an electric steering device for a vehicle, for example, a steering torque applied to an input shaft is detected by a relative angular displacement of an input shaft and an output shaft coaxially connected to the input shaft via a torsion bar. A torque sensor, and a control unit that drives and controls an electric motor for steering assistance based on the torque detected by the torque sensor, and assists operation of a steering mechanism according to rotation of a steered wheel by rotation of the electric motor. And
It is configured to reduce the burden on the driver for steering.
【０００３】図５は従来の電動モータのブラシ部分の拡
大断面図、図６は従来の電動モータのブラシ部分の斜視
図である。操舵補助用の電動モータは、ハウジング内に
固定される筒状の固定子と、整流子１００を有し、前記
固定子内に回転可能に配される回転子１０１と、前記ハ
ウジング内に取付けられ、前記整流子１００に接触する
ブラシ１０２と、該ブラシ１０２を前記整流子１００へ
向けて移動可能に収容するブラシホルダ１０３とを備
え、前記ブラシ１０２がモータ駆動回路を介してバッテ
リー等の電源に接続され、ブラシ１０２及び整流子１０
０を介して回転子１０１に電流を供給するように構成さ
れている。FIG. 5 is an enlarged sectional view of a brush portion of a conventional electric motor, and FIG. 6 is a perspective view of a brush portion of a conventional electric motor. The electric motor for assisting steering includes a cylindrical stator fixed in a housing, a commutator 100, and a rotor 101 rotatably disposed in the stator, and mounted in the housing. A brush 102 that contacts the commutator 100, and a brush holder 103 that movably accommodates the brush 102 toward the commutator 100. The brush 102 is connected to a power source such as a battery via a motor drive circuit. Connected, brush 102 and commutator 10
It is configured to supply a current to the rotor 101 via the radiator 0.
【０００４】ブラシホルダ１０３は、底壁の周縁に四つ
の側壁を有するブラシ箱１０３ａと、前記底壁に沿って
突設されたフランジ１０３ｂとを備え、該フランジ１０
３ｂによって前記ハウジングの内部に取付けられてい
る。ブラシ１０２は前記ブラシ箱１０３ａの内法寸法よ
りも小さい寸法の四角柱に形成され、該ブラシ１０２を
収容したブラシ箱１０３ａの底壁とブラシ１０２との間
に、該ブラシ１０２を整流子１００へ向けて付勢するブ
ラシばね１０４が設けてあり、該ブラシばね１０４によ
ってブラシ１０２が整流子１００に圧接される。The brush holder 103 includes a brush box 103a having four side walls on the periphery of a bottom wall, and a flange 103b protruding along the bottom wall.
It is mounted inside the housing by 3b. The brush 102 is formed in a square pillar having a size smaller than the inner dimension of the brush box 103a, and the brush 102 is transferred to the commutator 100 between the brush 102 and the bottom wall of the brush box 103a containing the brush 102. A brush spring 104 that urges the brush 102 toward the commutator 100 is provided by the brush spring 104.
【０００５】[0005]
【発明が解決しようとする課題】ところが、整流子１０
０は複数の整流子片１００ａが絶縁片１００ｂにより互
いに絶縁されて円筒形に組合せられており、周面の複数
の周方向位置には整流子片１００ａの間の溝部１００ｃ
が形成されているため、ブラシ箱１０３ａの内法寸法よ
りも小さい寸法に形成されたブラシ１０２を整流子１０
０の周面に圧接した状態で整流子１００が回転する場
合、ブラシ１０２が前記溝部１００ｃに当接して異音が
発生することになり、また、整流子１００の回転方向が
切換わるとき整流子１００との接触抵抗によってブラシ
１０２がブラシ箱１０３ａ内で揺動し、該ブラシ箱１０
３ａに当接して異音が発生することになり、これらの異
音がハウジング内で響いて比較的大きな音となり、この
異音がモータ駆動時の摺動音として車両の室内に洩れる
という問題があった。However, the commutator 10
A plurality of commutator pieces 100a are insulated from each other by insulating pieces 100b and are combined in a cylindrical shape, and grooves 100c between the commutator pieces 100a are provided at a plurality of circumferential positions on the peripheral surface.
Is formed, the brush 102 formed to a size smaller than the inner size of the brush box 103a is moved to the commutator 10.
When the commutator 100 rotates in a state of being pressed against the peripheral surface of the commutator 100, the brush 102 comes into contact with the groove 100c to generate abnormal noise, and when the rotation direction of the commutator 100 is switched, the commutator 100 rotates. The brush 102 swings in the brush box 103a due to contact resistance with the brush box 100, and the brush box 10a
3a, a noise is generated, and these noises are resonated in the housing and become relatively loud. This noise is leaked into the vehicle as a sliding noise when the motor is driven. there were.
【０００６】本発明は上記問題点を解決することができ
る電動モータ及び電動式舵取装置を提供することを目的
とする。An object of the present invention is to provide an electric motor and an electric steering device which can solve the above problems.
【０００７】[0007]
【課題を解決するための手段及び発明の効果】第１発明
に係る電動モータは、回転子に設けた整流子と接触する
ブラシ及び該ブラシを前記整流子へ向けての移動が可能
に収容する箱形のブラシホルダを備えた電動モータにお
いて、前記ブラシホルダは前記整流子の周面に臨む側壁
に前記ブラシと接触する弾性体を備えていることを特徴
とする。An electric motor according to a first aspect of the present invention accommodates a brush that comes into contact with a commutator provided on a rotor and accommodates the brush so as to be movable toward the commutator. In an electric motor including a box-shaped brush holder, the brush holder includes an elastic body that contacts the brush on a side wall facing a peripheral surface of the commutator.
【０００８】第４発明に係る電動式舵取装置は、第１発
明乃至第３発明の何れかに記載された電動モータと、該
電動モータを操舵手段の操舵に応じて駆動制御する制御
部と、前記電動モータの回転力を舵取機構に伝達する伝
達手段とを備えていることを特徴とする。According to a fourth aspect of the present invention, there is provided an electric steering apparatus comprising: an electric motor according to any one of the first to third aspects; and a control unit for controlling the electric motor in accordance with the steering of the steering means. Transmission means for transmitting the torque of the electric motor to a steering mechanism.
【０００９】第１発明及び第４発明にあっては、整流子
の周面に臨む側壁に設けた弾性体がブラシに接触するた
め、ブラシの整流子回転方向への動きを良好に抑制で
き、ブラシによる異音を可及的に少なくすることができ
る。In the first and fourth aspects of the present invention, the elastic body provided on the side wall facing the peripheral surface of the commutator comes into contact with the brush, so that the movement of the brush in the commutator rotation direction can be suppressed well. The noise caused by the brush can be reduced as much as possible.
【００１０】第２発明に係る電動モータは、前記ブラシ
は前記弾性体と接触する面に前記移動を案内する移動案
内部を有し、前記弾性体は前記移動案内部と係合する係
合部を有していることを特徴とする。In an electric motor according to a second aspect of the present invention, the brush has a moving guide portion for guiding the movement on a surface in contact with the elastic member, and the elastic member engages with the moving guide portion. It is characterized by having.
【００１１】第２発明にあっては、整流子との接触によ
って摩耗したブラシを整流子へ向けて良好に移動させる
ことができ、摩耗したブラシの整流子周面との接触性を
良好にできる。According to the second aspect of the present invention, the brush worn by the contact with the commutator can be favorably moved toward the commutator, and the contact of the worn brush with the peripheral surface of the commutator can be improved. .
【００１２】第３発明に係る電動モータは、前記移動案
内部は前記ブラシの両側面に設けてあり、前記弾性体は
前記係合部が結合されたコイルばねであることを特徴と
する。According to a third aspect of the present invention, in the electric motor, the moving guide portion is provided on both side surfaces of the brush, and the elastic body is a coil spring to which the engaging portion is connected.
【００１３】第３発明にあっては、ブラシの整流子回転
方向への動きをブラシの両側面で抑制でき、しかも、弾
性体を直接ブラシに接触させることなくコイルばねに結
合した係合部がブラシに接触するため、弾性体のブラシ
との接触抵抗を低減でき、摩耗したブラシを整流子に向
けて円滑に移動させることができ、該ブラシの整流子周
面との接触性をより一層良好にできる。According to the third aspect of the present invention, the movement of the brush in the commutator rotation direction can be suppressed on both side surfaces of the brush, and the engaging portion connected to the coil spring without bringing the elastic body into direct contact with the brush is provided. Since the brush contacts the brush, the contact resistance between the elastic body and the brush can be reduced, and the worn brush can be smoothly moved toward the commutator, so that the contact property of the brush with the commutator peripheral surface is further improved. Can be.
【００１４】[0014]
【発明の実施の形態】以下本発明をその実施の形態を示
す図面に基づいて詳述する。図１は本発明に係る電動式
舵取装置の断面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. FIG. 1 is a sectional view of an electric steering apparatus according to the present invention.
【００１５】この電動式舵取装置は、バー挿入孔１ａを
有し、上端が舵取りのための操舵輪（図示せす）に繋が
る筒状の入力軸１と、前記バー挿入孔１ａに挿入され、
その上端がダウエルピン２を介して前記入力軸１の上端
と同軸的に繋がるトーションバー３と、ダウエルピン４
を介して該トーションバー３の下端に同軸的に繋がる出
力軸５と、これら入力軸１及び出力軸５を収容する第１
のハウジング６に取付けられる操舵補助用の電動モータ
７と、前記ハウジング６内に収容され、前記操舵輪の回
転によって前記入力軸１に加わるトルクを前記トーショ
ンバー３に生ずる捩れによって検出するトルクセンサ８
と、該トルクセンサ８に接続され、該トルクセンサ８が
検出したトルクに基づいて前記電動モータ７を駆動制御
する制御部９と、前記電動モータ７の回転を前記出力軸
５に伝達する伝達手段１０とを備える。This electric steering apparatus has a bar insertion hole 1a, a cylindrical input shaft 1 whose upper end is connected to a steering wheel (not shown) for steering, and a bar insertion hole 1a. ,
A torsion bar 3 whose upper end is coaxially connected to the upper end of the input shaft 1 via a dowel pin 2;
And an output shaft 5 coaxially connected to the lower end of the torsion bar 3 through the first shaft.
A steering assist electric motor 7 mounted on the housing 6 and a torque sensor 8 housed in the housing 6 and detecting the torque applied to the input shaft 1 by the rotation of the steering wheel by the torsion generated in the torsion bar 3.
A control unit 9 connected to the torque sensor 8 for controlling the driving of the electric motor 7 based on the torque detected by the torque sensor 8, and a transmission unit for transmitting the rotation of the electric motor 7 to the output shaft 5 10 is provided.
【００１６】出力軸５の下端は、車体の前部に左右方向
に延設されたラック軸及び該ラック軸の中途部に噛合す
るピニオンを有する舵取機構（図示せず）の前記ピニオ
ンが設けられたピニオン軸の上端に繋がる。A lower end of the output shaft 5 is provided with a pinion of a steering mechanism (not shown) having a rack shaft extending in the left-right direction at a front portion of the vehicle body and a pinion meshing with an intermediate portion of the rack shaft. Connected to the upper end of the pinion shaft.
【００１７】マイクロプロセッサを用いてなる前記制御
部９の入力部には前記トルクセンサ８が接続されてお
り、出力部には前記電動モータ７のモータ駆動回路１１
が接続されている。The torque sensor 8 is connected to an input section of the control section 9 using a microprocessor, and a motor drive circuit 11 of the electric motor 7 is connected to an output section.
Is connected.
【００１８】伝達手段１０は、ハイポイドピニオンであ
る小歯車１０ａとハイポイドホイールである大歯車１０
ｂとを有するハイポイド歯車であり、小歯車１０ａは前
記電動モータ７の回転子軸の端部に一体に形成されてい
る。大歯車１０ｂはその一側の円錐部に歯が周設されて
おり、内周面が前記出力軸５の中間部に外嵌されてい
る。The transmission means 10 comprises a small gear 10a which is a hypoid pinion and a large gear 10 which is a hypoid wheel.
b), and the small gear 10 a is formed integrally with an end of the rotor shaft of the electric motor 7. The large gear 10b has teeth on one side of a conical portion, and an inner peripheral surface is fitted around the intermediate portion of the output shaft 5.
【００１９】電動モータ７は、前記第１のハウジング６
に取外しを可能に連結される円筒形の第２のハウジング
７０内に固定される円筒形の固定子７１と、該固定子７
１内に回転可能に配される回転子７２と、該回転子７２
に取付けられた円筒形の整流子７３と、該整流子７３の
周面と接触する複数のブラシ７４，７４と、これらブラ
シ７４，７４を前記整流子７３へ向けて移動可能に収容
するブラシホルダ７５，７５と、前記ブラシ７４，７４
を整流子７３へ向けて付勢するブラシばね７６とを備
え、前記ブラシ７４，７４がリード線７７を介してモー
タ駆動回路１１に接続され、該モータ駆動回路１１がバ
ッテリー等の電源及び前記制御部９に接続されており、
また、ブラシホルダ７５，７５が前記ハウジング７０内
にホルダフレーム７８を介して取付けられている。The electric motor 7 is connected to the first housing 6.
A cylindrical stator 71 fixed in a cylindrical second housing 70 detachably connected to the
1 and a rotor 72 rotatably disposed within
, A plurality of brushes 74, 74 in contact with the peripheral surface of the commutator 73, and a brush holder for accommodating the brushes 74, 74 movably toward the commutator 73. 75, 75 and the brushes 74, 74
And a brush spring 76 for biasing the brush toward the commutator 73. The brushes 74, 74 are connected to a motor drive circuit 11 via lead wires 77, and the motor drive circuit 11 is connected to a power source such as a battery and the control unit. Connected to unit 9;
Further, brush holders 75, 75 are mounted in the housing 70 via a holder frame 78.
【００２０】回転子７２は、その両端が軸受７９，７９
を介して前記ハウジング７０内に回転可能に支持される
回転子軸７２ａと、該回転子軸７２ａの中間部に固定さ
れる駆動巻線７２ｂとを備え、該駆動巻線７２ｂが前記
整流子７３に接続されている。The rotor 72 has bearings 79 at both ends.
, A rotor shaft 72a rotatably supported in the housing 70 through the housing 70, and a drive winding 72b fixed to an intermediate portion of the rotor shaft 72a, and the drive winding 72b is connected to the commutator 73. It is connected to the.
【００２１】図２は電動モータのブラシ部分の拡大断面
図、図３は図２のIII −III 線の断面図、図４はブラシ
部分の斜視図である。ブラシホルダ７５は、底壁７５ａ
の周縁から立上がる第１の側壁７５ｂ乃至第４の側壁７
５ｅを有し、前記ブラシ７４を収容するブラシ箱７５Ａ
を備えており、整流子７３の周面に臨む第１及び第２の
側壁７５ｂ，７５ｃの内面には、前記ブラシ７４の一側
面７４ａ及び他側面７４ｂと接触して該ブラシ７４の整
流子回転方向への動きを抑制する弾性体１２，１２を設
け、第３の側壁７５ｄには前記リード線７７が挿入され
る切欠溝７５ｆが設けてある。FIG. 2 is an enlarged sectional view of the brush portion of the electric motor, FIG. 3 is a sectional view taken along the line III--III of FIG. 2, and FIG. 4 is a perspective view of the brush portion. The brush holder 75 has a bottom wall 75a.
From the first side wall 75b to the fourth side wall 7 rising from the periphery of
Brush box 75A having 5e and containing the brush 74
The inner surfaces of the first and second side walls 75b and 75c facing the peripheral surface of the commutator 73 are in contact with one side surface 74a and the other side surface 74b of the brush 74 to rotate the commutator of the brush 74. The elastic members 12 and 12 for suppressing the movement in the direction are provided, and a cutout groove 75f into which the lead wire 77 is inserted is provided on the third side wall 75d.
【００２２】ブラシ７４は前記ブラシ箱７５Ａの内法寸
法よりも小さい寸法の四角柱に形成され、弾性体１２，
１２と接触する一側面７４ａ及び他側面７４ｂに前記整
流子７３へ向けての移動を案内する溝形の移動案内部７
４ｃ，７４ｃが設けてあり、一側面７４ａ及び他側面７
４ｂの間の第３側面７４ｄに前記リード線７７が接続さ
れており、また、ブラシホルダ７５の底壁７５ａとの間
に前記ブラシばね７６が設けてあり、該ブラシばね７６
によってブラシ７４が整流子７３に圧接される。The brush 74 is formed as a rectangular column having a size smaller than the inner size of the brush box 75A.
A groove-shaped movement guide portion 7 that guides the movement toward the commutator 73 on one side surface 74a and the other side surface 74b that come into contact with the groove 12.
4c, 74c, one side 74a and the other side 7
4b, the lead wire 77 is connected to a third side surface 74d, and the brush spring 76 is provided between the third side surface 74d and the bottom wall 75a of the brush holder 75.
As a result, the brush 74 is pressed against the commutator 73.
【００２３】弾性体１２はコイルばねを用いてなり、該
コイルばねの一端を前記第１及び第２の側壁７５ｂ，７
５ｃの内面に設けられた凹部に挿入支持し、コイルばね
の他端に前記移動案内部７４ｃ，７４ｃに係合する四角
形の係合部１２ａが溶接等の結合手段によって結合され
ている。この係合部１２ａは金属材料によって形成され
ており、ブラシ７４との係合による摩耗を少なくしてあ
る。また、弾性体１２は非撓み状態とするか、又は撓み
量が非常に少ない状態とし、係合部１２ａのブラシ７４
との係合による抵抗をより一層小さくしてある。The elastic body 12 uses a coil spring, and one end of the coil spring is connected to the first and second side walls 75b, 7b.
A rectangular engaging portion 12a which is inserted and supported in a concave portion provided on the inner surface of 5c and which engages with the moving guide portions 74c, 74c is connected to the other end of the coil spring by connecting means such as welding. The engagement portion 12a is formed of a metal material, and wear caused by engagement with the brush 74 is reduced. The elastic member 12 is set in a non-deflected state or in a state in which the amount of bending is extremely small, and the brush 74 of the engaging portion 12a is
The resistance due to the engagement with is further reduced.
【００２４】以上の如く構成された電動式舵取装置は、
操舵輪に操舵負荷が加わるとき整流子７３の周面に圧接
したブラシ７４から整流子７３を介して回転子７２に電
流が供給され、該回転子７２が整流子７３と一体で回転
し、また、操舵輪の操舵方向が切換えられるとき前記整
流子７３の回転方向が切換わることになるが、前記ブラ
シ７４はブラシホルダ７５に設けた弾性体１２，１２に
よって整流子回転方向への動きが抑制してあるため、整
流子７３が回転するときブラシ７４が整流子７３の周面
の溝部に当接することを良好に防ぐことができ、ブラシ
７４による異音を可及的に少なくすることができ、さら
に整流子７３の回転方向が切換わるときブラシ７４がブ
ラシ箱７５Ａ内で揺動することを良好に防ぐことがで
き、ブラシ７４による異音を可及的に少なくすることが
できる。The electric steering apparatus configured as described above
When a steering load is applied to the steered wheels, current is supplied to the rotor 72 via the commutator 73 from the brush 74 pressed against the peripheral surface of the commutator 73, and the rotor 72 rotates integrally with the commutator 73, and When the steering direction of the steered wheels is switched, the rotation direction of the commutator 73 is switched, but the movement of the brush 74 in the commutator rotation direction is suppressed by the elastic bodies 12 provided on the brush holder 75. Therefore, it is possible to prevent the brush 74 from abutting on the groove on the peripheral surface of the commutator 73 when the commutator 73 rotates, and it is possible to minimize the noise caused by the brush 74 as much as possible. Further, when the rotation direction of the commutator 73 is switched, the brush 74 can be prevented from swinging in the brush box 75A, and the noise caused by the brush 74 can be reduced as much as possible.
【００２５】また、ブラシ７４は移動案内部７４ｃ，７
４ｃを設けてあり、弾性体１２，１２はコイルばねに係
合部１２ａ，１２ａを結合してあり、この係合部１２
ａ，１２ａが前記移動案内部７４ｃ，７４ｃと係合して
いるため、整流子７３との接触によって摩耗したブラシ
７４を整流子７３へ向けて円滑に移動させることがで
き、該ブラシ７４の整流子周面との接触性を良好にでき
る。The brush 74 is provided with moving guides 74c, 7c.
4c, the elastic members 12 and 12 have engagement portions 12a and 12a coupled to a coil spring.
The brushes 74 worn by the contact with the commutator 73 can be smoothly moved toward the commutator 73 because the a and 12a are engaged with the moving guide portions 74c, 74c. The contact with the child peripheral surface can be improved.
【００２６】尚、以上説明した実施の形態では、弾性体
１２としてコイルばねを用いたが、その他、例えば略Ｊ
字形に湾曲する線ばね又は板ばねを用いてもよいし、さ
らにゴム板を用いてもよい。また、コイルばねに係合部
１２ａを結合したが、この係合部１２ａを設けることな
く、ばねを直接ブラシ７４に接触させてもよい。In the above-described embodiment, a coil spring is used as the elastic body 12.
A wire spring or a leaf spring curved in a letter shape may be used, or a rubber plate may be used. Further, although the engaging portion 12a is connected to the coil spring, the spring may be directly contacted with the brush 74 without providing the engaging portion 12a.
【００２７】また、以上説明した実施の形態では、整流
子７３の周面に臨む第１及び第２の側壁７５ｂ，７５ｃ
に弾性体１２，１２を設けたが、その他、第１及び第２
の側壁７５ｂ，７５ｃの一方にのみ弾性体１２を設け、
該弾性体１２によってブラシ７４の整流子回転方向への
動きを抑制してもよい。この場合、第１及び第２の側壁
７５ｂ，７５ｃの他方にブラシ７４が接触することにな
るため、第１及び第２の側壁７５ｂ，７５ｃの他方にブ
ラシ７４に当接する突起を設け、ブラシ７４のブラシホ
ルダ７５との接触抵抗を少なくするのが好ましい。Further, in the embodiment described above, the first and second side walls 75b, 75c facing the peripheral surface of the commutator 73.
Are provided with the elastic bodies 12, 12, but in addition, the first and the second
The elastic body 12 is provided only on one of the side walls 75b and 75c of
The movement of the brush 74 in the commutator rotation direction may be suppressed by the elastic body 12. In this case, since the brush 74 comes into contact with the other of the first and second side walls 75b, 75c, a protrusion is provided on the other of the first and second side walls 75b, 75c to contact the brush 74, and the brush 74 is provided. It is preferable to reduce the contact resistance with the brush holder 75.
【００２８】また、実施の形態ではブラシ７４に溝形の
移動案内部７４ｃ，７４ｃを設けたが、この移動案内部
７４ｃ，７４ｃは必ずしも必要でない。In the embodiment, the brush 74 is provided with the groove-shaped moving guides 74c, 74c, but the moving guides 74c, 74c are not always required.
【００２９】また、以上説明した実施の形態では電動モ
ータ７を電動式舵取装置に用いたが、その他、電動モー
タ７は電動式舵取装置以外に用いてもよい。In the embodiment described above, the electric motor 7 is used for the electric steering device. However, the electric motor 7 may be used for other than the electric steering device.
【図１】本発明に係る電動式舵取装置の断面図である。FIG. 1 is a cross-sectional view of an electric steering device according to the present invention.
【図２】本発明に係る電動モータのブラシ部分の拡大断
面図である。FIG. 2 is an enlarged sectional view of a brush portion of the electric motor according to the present invention.
【図３】図２のIII −III 線の断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 2;
【図４】本発明に係る電動モータのブラシ部分の斜視図
である。FIG. 4 is a perspective view of a brush portion of the electric motor according to the present invention.
【図５】従来の電動モータのブラシ部分の拡大断面図で
ある。FIG. 5 is an enlarged sectional view of a brush portion of a conventional electric motor.
【図６】従来の電動モータのブラシ部分の斜視図であ
る。FIG. 6 is a perspective view of a brush portion of a conventional electric motor.
７ 電動モータ ９ 制御部 １０ 伝達手段 １２ 弾性体 12a 係合部 ７２ 回転子 ７３ 整流子 ７４ ブラシ 74c 移動案内部 ７５ ブラシホルダ 75b ,75c 側壁 7 Electric motor 9 Control unit 10 Transmission means 12 Elastic body 12a Engagement unit 72 Rotor 73 Commutator 74 Brush 74c Movement guide unit 75 Brush holder 75b, 75c Side wall
フロントページの続き Ｆターム(参考） 3D033 CA03 5H607 AA04 BB01 BB04 BB14 CC01 CC03 CC05 CC07 DD03 DD08 DD16 DD17 EE31 FF01 HH02 JJ08 5H613 AA02 BB04 BB23 BB26 BB27 GA13 GA15 GA16 GA17 GB18 SS06 5H623 AA04 BB07 HH01 JJ03 JJ05 JJ06 LL02 LL07 LL13 Continued on the front page F-term (reference)
Claims (4)
及び該ブラシを前記整流子へ向けての移動が可能に収容
する箱形のブラシホルダを備えた電動モータにおいて、
前記ブラシホルダは前記整流子の周面に臨む側壁に前記
ブラシと接触する弾性体を備えていることを特徴とする
電動モータ。1. An electric motor comprising: a brush that comes into contact with a commutator provided on a rotor; and a box-shaped brush holder that accommodates the brush so as to be movable toward the commutator.
The electric motor according to claim 1, wherein the brush holder includes an elastic body in contact with the brush on a side wall facing a peripheral surface of the commutator.
前記移動を案内する移動案内部を有し、前記弾性体は前
記移動案内部と係合する係合部を有している請求項１記
載の電動モータ。2. The brush according to claim 1, wherein said brush has a moving guide on a surface in contact with said elastic body, and said elastic body has an engaging portion engaged with said moving guide. An electric motor according to claim 1.
設けてあり、前記弾性体は前記係合部が結合されたコイ
ルばねである請求項２記載の電動モータ。3. The electric motor according to claim 2, wherein the movement guide portion is provided on both side surfaces of the brush, and the elastic body is a coil spring to which the engaging portion is connected.
れた電動モータと、該電動モータを操舵手段の操舵に応
じて駆動制御する制御部と、前記電動モータの回転力を
舵取機構に伝達する伝達手段とを備えていることを特徴
とする電動式舵取装置。4. An electric motor according to claim 1, a control unit for controlling the driving of the electric motor in accordance with the steering of a steering means, and steering the rotational force of the electric motor. A motor-driven steering device comprising: a transmission unit that transmits a signal to a mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000051880A JP3639947B2 (en) | 2000-02-28 | 2000-02-28 | Electric motor and electric steering apparatus using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000051880A JP3639947B2 (en) | 2000-02-28 | 2000-02-28 | Electric motor and electric steering apparatus using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001245458A true JP2001245458A (en) | 2001-09-07 |
| JP3639947B2 JP3639947B2 (en) | 2005-04-20 |
Family
ID=18573475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000051880A Expired - Fee Related JP3639947B2 (en) | 2000-02-28 | 2000-02-28 | Electric motor and electric steering apparatus using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3639947B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2433651A (en) * | 2005-12-09 | 2007-06-27 | Bosch Gmbh Robert | Vibration decoupling mounting of brushes or brush holders |
| DE102009034884A1 (en) * | 2009-07-27 | 2011-02-03 | Schunk Kohlenstofftechnik Gmbh | Holder for holding contact piece of carbon brush, has holder profile provided with receiving chamber, and spring mechanism connected with holder in material-fit manner, where spring mechanism is fastened with welded joint at holder profile |
| EP1563575B1 (en) * | 2002-10-22 | 2014-04-16 | Robert Bosch Gmbh | Contact element holder |
-
2000
- 2000-02-28 JP JP2000051880A patent/JP3639947B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1563575B1 (en) * | 2002-10-22 | 2014-04-16 | Robert Bosch Gmbh | Contact element holder |
| GB2433651A (en) * | 2005-12-09 | 2007-06-27 | Bosch Gmbh Robert | Vibration decoupling mounting of brushes or brush holders |
| DE102009034884A1 (en) * | 2009-07-27 | 2011-02-03 | Schunk Kohlenstofftechnik Gmbh | Holder for holding contact piece of carbon brush, has holder profile provided with receiving chamber, and spring mechanism connected with holder in material-fit manner, where spring mechanism is fastened with welded joint at holder profile |
| DE102009034884B4 (en) * | 2009-07-27 | 2015-06-25 | Schunk Kohlenstofftechnik Gmbh | Contact holder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3639947B2 (en) | 2005-04-20 |
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