JP2003023757A - Brush holder for dynamo-electric machine - Google Patents
Brush holder for dynamo-electric machineInfo
- Publication number
- JP2003023757A JP2003023757A JP2001204630A JP2001204630A JP2003023757A JP 2003023757 A JP2003023757 A JP 2003023757A JP 2001204630 A JP2001204630 A JP 2001204630A JP 2001204630 A JP2001204630 A JP 2001204630A JP 2003023757 A JP2003023757 A JP 2003023757A
- Authority
- JP
- Japan
- Prior art keywords
- brush
- retainer
- commutator
- electric machine
- spring
- 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
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、回転電機、特に
電動パワーステアリング装置のアシストモータに適した
低振動、低騒音の回転電機用ブラシ保持装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-vibration, low-noise brush holding device for a rotary electric machine, which is suitable for an assist motor of an electric power steering apparatus.
【０００２】[0002]
【従来の技術】図５は、従来の回転電機の構成を示す断
面図、図６は、この回転電機のブラシ保持装置を有する
ブラケットを回転電機の内部側から見た平面図、図７
は、従来のブラシ保持装置の斜視図、図８は、ブラシの
振動発生を説明する模式図である。図において、１は回
転電機のヨーク、２はヨーク１の内径面に設けられた界
磁装置のマグネット、３はマグネット２の内径面とは所
定の空隙を介して設けられシャフト４を有する回転電機
の電機子、５はシャフト４に設けられた整流子、６はヨ
ーク１の開口端を塞ぐように設けられたブラケットで、
シャフト４はヨーク１に設けられたベアリング７とブラ
ケット６に設けられたベアリング７ａとで回転自在に支
持されている。2. Description of the Related Art FIG. 5 is a sectional view showing a structure of a conventional rotary electric machine, FIG. 6 is a plan view of a bracket having a brush holding device of the rotary electric machine as viewed from the inside of the rotary electric machine, and FIG.
FIG. 8 is a perspective view of a conventional brush holding device, and FIG. 8 is a schematic diagram for explaining vibration generation of the brush. In the figure, 1 is a rotary electric machine yoke, 2 is a field device magnet provided on the inner diameter surface of the yoke 1, and 3 is a rotary electric machine having a shaft 4 provided with a predetermined gap from the inner diameter surface of the magnet 2. Of the armature, 5 is a commutator provided on the shaft 4, 6 is a bracket provided so as to close the opening end of the yoke 1,
The shaft 4 is rotatably supported by a bearing 7 provided on the yoke 1 and a bearing 7a provided on the bracket 6.
【０００３】８はブラケット６に取り付けられたブラシ
保持器取付体であり、円弧状をなす外壁部８ａがブラケ
ット６の円筒部６ａの内径に位置決めされ、基板部８ｂ
がブラケット６にネジ固定されている。９はブラシ保持
取付体８に取り付けられたブラシ保持器で、円周方向に
４か所配設されており、内部にブラシ１０とスプリング
１１とを保持し、ブラシ１０は整流子５の外周に摺接
し、スプリング１１はブラシ１０と整流子５との間に所
定の押圧力を付与している。１２はブラシ１０と外部と
を電気的に接続するピグテイルである。Reference numeral 8 is a brush holder mounting body mounted on the bracket 6, and an arcuate outer wall portion 8a is positioned at the inner diameter of the cylindrical portion 6a of the bracket 6, and a base portion 8b.
Are fixed to the bracket 6 with screws. Reference numeral 9 denotes a brush holder attached to the brush holding mount body 8, which is arranged at four locations in the circumferential direction, holds the brush 10 and the spring 11 therein, and the brush 10 is provided on the outer circumference of the commutator 5. The spring 11 makes sliding contact and applies a predetermined pressing force between the brush 10 and the commutator 5. Reference numeral 12 is a pigtail that electrically connects the brush 10 and the outside.
【０００４】ブラシ保持器取付体８に対するブラシ保持
器９の取付状態を示したのが図７であり、ブラシ保持器
９は側面壁９ａと上面壁９ｂとを有するコの字状に形成
されており、コの字状の先端には、かしめ用突起９ｃと
位置保持用突起９ｄとが設けられ、位置保持用突起９ｄ
により高さ方向の寸法が設定されてかしめ用突起９ｃに
よりスプリング保持器１３と共にブラシ保持器取付体８
の基板部８ｂにかしめ固定されている。スプリング保持
器１３は、コの字状のブラシ保持器９の底面壁を形成す
る壁面部１３ａと、ブラシ保持器９の反整流子側の開口
部に位置して設けられ、スプリング１１の一端を位置決
めして保持する保持部１３ｂとから構成されており、こ
の保持部１３ｂの位置により、スプリング１１のセット
時の長さ、すなわちスプリング１１の力量が決定され
る。FIG. 7 shows how the brush retainer 9 is attached to the brush retainer attaching body 8. The brush retainer 9 is formed in a U shape having a side wall 9a and an upper wall 9b. A caulking projection 9c and a position holding projection 9d are provided at the U-shaped tip, and the position holding projection 9d is provided.
The dimension in the height direction is set by means of the protrusions 9c for caulking, together with the spring retainer 13 and the brush retainer mounting body 8.
Is fixed to the base plate portion 8b by caulking. The spring holder 13 is provided at a wall surface portion 13 a forming a bottom wall of the U-shaped brush holder 9 and an opening portion of the brush holder 9 on the side opposite to the commutator, and one end of the spring 11 is provided. The holding portion 13b is positioned and held, and the position of the holding portion 13b determines the length when the spring 11 is set, that is, the force of the spring 11.
【０００５】[0005]
【発明が解決しようとする課題】このように構成された
回転電機において、電機子３が回転すると、シャフト４
に圧入固定された整流子５も同じ回転速度で同じ方向に
回転する。整流子５が回転すると、ブラシ１０はスプリ
ング１１により整流子５の外径面に押圧されて摺動す
る。図８は、このときのブラシ１０と整流子５との状態
を模式化して示したもので、ブラシ１０は整流子５のス
リット５ａ間の微小な段差を乗り越えるときに、Ｙ軸
（＋側または−側）及びＸ軸（＋側または−側）に外力
を受ける。In the rotating electric machine constructed as described above, when the armature 3 rotates, the shaft 4
The commutator 5, which is press-fitted and fixed to, also rotates in the same direction at the same rotation speed. When the commutator 5 rotates, the brush 10 is pressed against the outer diameter surface of the commutator 5 by the spring 11 and slides. FIG. 8 schematically shows the state of the brush 10 and the commutator 5 at this time, and when the brush 10 gets over a minute step between the slits 5a of the commutator 5, the brush 10 moves on the Y axis (+ side or External force is applied to the − side) and the X axis (+ side or − side).
【０００６】この外力は、整流子５の回転速度や、整流
子面の仕上げ精度により異なり、従って、使用中は常に
変動する外力であり。この外力によりブラシ１０は自励
振動を起こすことがある。ブラシ１０の振動は、ブラシ
保持器９、スプリング１１、スプリング保持器１３へと
伝わり、これらの振動がモータ作動時に騒音として発生
する問題があった。This external force varies depending on the rotation speed of the commutator 5 and the finishing accuracy of the commutator surface, and therefore is an external force that constantly fluctuates during use. This external force may cause the brush 10 to vibrate. The vibration of the brush 10 is transmitted to the brush holder 9, the spring 11, and the spring holder 13, and there is a problem that these vibrations are generated as noise when the motor operates.
【０００７】また、この種の回転電機を、特に電動パワ
ーステアリング装置のアシストモータに適用した場合、
モータの回転は同一方向だけでなく反転する場合がある
ため、このとき、整流子５に対して摺動しているブラシ
１０とブラシ保持器９とが接触して打撃音が発生し、こ
れが騒音となる問題があった。When this type of rotary electric machine is applied to an assist motor of an electric power steering device,
Since the rotation of the motor may be reversed not only in the same direction but also in the same direction, at this time, the brush 10 sliding against the commutator 5 and the brush retainer 9 come into contact with each other to generate a striking sound, which is a noise. There was a problem that became.
【０００８】この発明は、以上のような問題点を解決す
るためになされたもので、ブラシの振動に対する減衰特
性を良好なものとすることにより、振動による騒音を抑
制した回転電機用ブラシ保持装置を得ることを目的とす
る。The present invention has been made in order to solve the above problems, and has a brush holding device for a rotating electric machine in which noise due to vibration is suppressed by improving a damping characteristic for vibration of the brush. Aim to get.
【０００９】[0009]
【課題を解決するための手段】この発明に係る回転電機
用ブラシ保持装置は、整流子と摺接するブラシを収納保
持するブラシ保持器、このブラシ保持器を配設固定する
基板部とブラシ保持器より外径側に位置して整流子の外
径面と対向する外壁部とからなるブラシ保持器取付体、
ブラシ保持器と共にブラシ保持器取付体に取付固定さ
れ、ブラシ保持器の反整流子側開口部に位置してブラシ
との間に介在するスプリングの一端を保持する保持部が
設けられたスプリング保持器を備え、ブラシ保持器は、
ブラシから伝達される振動を減衰させる材料で被覆した
ものである。A brush holder for a rotary electric machine according to the present invention includes a brush holder for accommodating and holding a brush that is in sliding contact with a commutator, a base portion for disposing and fixing the brush holder, and a brush holder. A brush retainer mounting body that is located on the outer diameter side and that includes an outer wall portion that faces the outer diameter surface of the commutator,
A spring retainer that is fixed to a brush retainer mounting body together with the brush retainer, and that is provided with a retaining portion that is positioned at an opening on the side opposite to the commutator of the brush retainer and that retains one end of a spring interposed between the brush retainer and the brush retainer. And the brush holder is
It is coated with a material that damps the vibration transmitted from the brush.
【００１０】また、スプリング及びスプリング保持器
は、振動を減衰させる材料で被覆したものである。Further, the spring and the spring retainer are coated with a material for damping vibration.
【００１１】また、振動を減衰させる材料はフッ素樹脂
である。The material for damping the vibration is fluororesin.
【００１２】また、整流子と摺接するブラシを収納保持
するブラシ保持器、このブラシ保持器を配設固定する基
板部とブラシ保持器より外径側に位置して整流子の外径
面と対向する外壁部とからなるブラシ保持器取付体、ブ
ラシ保持器と共にブラシ保持取付体に取付固定され、ブ
ラシ保持器の反整流子側開口部に位置してブラシとの間
に介在するスプリングの一端を保持する保持部が設けら
れたスプリング保持器を備え、ブラシ保持器とブラシ保
持器取付体との間を、ブラシから伝達される振動を減衰
させる部材で接続したものである。Further, a brush holder for accommodating and holding a brush that is in sliding contact with the commutator, a substrate portion for disposing and fixing the brush holder and an outer diameter side of the brush holder and facing the outer diameter surface of the commutator. The brush retainer mounting body consisting of the outer wall portion and the brush retainer together with the brush retainer are attached and fixed to the brush retainer mounting body, and one end of the spring interposed between the brush retainer and the brush retainer is located between the brush retainer and the brush retainer. A spring holder provided with a holding portion for holding is provided, and the brush holder and the brush holder mounting body are connected by a member for damping the vibration transmitted from the brush.
【００１３】また、ブラシから伝達される振動を減衰さ
せる部材は、粘性を有する緩衝部材である。The member for damping the vibration transmitted from the brush is a viscous cushioning member.
【００１４】また、ブラシから伝達される振動を減衰さ
せる部材は、弾性を有する緩衝部材である。The member for damping the vibration transmitted from the brush is a buffer member having elasticity.
【００１５】また、車載用電動パワーステアリングの駆
動用モータに適用したものである。Further, the invention is applied to a drive motor for an on-vehicle electric power steering.
【００１６】[0016]
【発明の実施の形態】実施の形態１．図１は、この発明
の実施の形態１による回転電機用ブラシ保持装置を示す
図であり、図１（ａ）は斜視図、図１（ｂ）は上面図、
図１（ｃ）は断面図である。なお、上記従来例と同一部
分または対応する部分には同一符号が付与されている。
図において、８はブラケット６に取り付けられたブラシ
保持器取付体であり、円弧状をなす外壁部８ａがブラケ
ット６の円筒部６ａの内径に位置決めされ、基板部８ｂ
がブラケット６にネジ固定されている。９はブラシ保持
取付体８に取り付けられたブラシ保持器で、円周方向に
４か所配設されており、内部にブラシ１０とスプリング
１１とを保持し、ブラシ１０は図示されない回転電機の
整流子の外周に摺接し、スプリング１１はブラシ１０と
整流子との間に所定の押圧力を付与している。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1A and 1B are views showing a brush holding device for a rotary electric machine according to Embodiment 1 of the present invention, wherein FIG. 1A is a perspective view and FIG. 1B is a top view.
FIG. 1C is a sectional view. The same parts as or corresponding parts to those of the conventional example are designated by the same reference numerals.
In the figure, reference numeral 8 denotes a brush holder mounting body mounted on the bracket 6, and an outer wall portion 8a having an arc shape is positioned at an inner diameter of the cylindrical portion 6a of the bracket 6, and a base portion 8b.
Are fixed to the bracket 6 with screws. Reference numeral 9 is a brush holder attached to the brush holding mount body 8, which is arranged at four locations in the circumferential direction, holds a brush 10 and a spring 11 therein, and the brush 10 is a rectifier of a rotating electric machine (not shown). The spring 11 is in sliding contact with the outer circumference of the child, and the spring 11 applies a predetermined pressing force between the brush 10 and the commutator.
【００１７】ブラシ保持器９は側面壁９ａと上面壁９ｂ
とを有するコの字状に形成されており、コの字状の先端
には、かしめ用突起９ｃと位置保持用突起９ｄとが設け
られ、位置保持用突起９ｄにより高さ方向の寸法が設定
されてかしめ用突起９ｃによりスプリング保持器１３と
共にブラシ保持器取付体８の基板部８ｂにかしめ固定さ
れている。スプリング保持器１３は、コの字状のブラシ
保持器９の底面壁を形成する壁面部１３ａと、ブラシ保
持器９の反整流子側の開口部に位置して設けられ、スプ
リング１１の一端を位置決めして保持する保持部１３ｂ
とから構成されており、この保持部１３ｂの位置によ
り、スプリング１１のセット時の長さ、すなわちスプリ
ング１１の力量が決定される。The brush holder 9 has a side wall 9a and a top wall 9b.
And a caulking projection 9c and a position-holding projection 9d are provided at the tip of the U-shape, and the dimension in the height direction is set by the position-holding projection 9d. The spring retainer 13 and the spring retainer 13 are caulked and fixed to the base plate portion 8b of the brush retainer mounting body 8 by the caulking projection 9c. The spring holder 13 is provided at a wall surface portion 13 a forming a bottom wall of the U-shaped brush holder 9 and an opening portion of the brush holder 9 on the side opposite to the commutator, and one end of the spring 11 is provided. Holding part 13b for positioning and holding
The length of the spring 11 when the spring 11 is set, that is, the amount of force of the spring 11 is determined by the position of the holding portion 13b.
【００１８】本実施の形態では、以上のように構成され
たブラシ保持装置に、ブラシ１０からの振動を減衰させ
るための振動減衰材料１００（図面斜線部）を被覆した
ものである。振動減衰材料１００としては、例えばフッ
素樹脂のコーティングなどが考えられる。ブラシ保持装
置のうち、ブラシ保持器９に振動減衰材料１００を被覆
した場合、上述したような、電動パワーステアリング装
置のアシストモータにおいてモータの回転が反転した時
の、ブラシ１０とブラシ保持器９との接触による打撃音
を抑制することができる。また、スプリング１０及びス
プリング保持器１３に振動減衰材料１００を被覆した場
合、整流子５と摺動しているブラシ１０の振動による騒
音を抑制することができる。In the present embodiment, the brush holding device constructed as described above is coated with a vibration damping material 100 (shaded portion in the drawing) for damping the vibration from the brush 10. The vibration damping material 100 may be, for example, a fluororesin coating. In the brush holding device, when the brush holder 9 is coated with the vibration damping material 100, the brush 10 and the brush holder 9 when the rotation of the motor is reversed in the assist motor of the electric power steering apparatus as described above. It is possible to suppress the hitting sound caused by the contact of. Further, when the spring 10 and the spring retainer 13 are coated with the vibration damping material 100, noise due to the vibration of the brush 10 sliding on the commutator 5 can be suppressed.
【００１９】実施の形態２．図２は、この発明の実施の
形態２による回転電機用ブラシ保持装置を示す図であ
り、図２（ａ）は斜視図、図２（ｂ）は上面図、図２
（ｃ）は断面図である。なお、上記実施の形態１と同様
の箇所の説明は省略する。図において、２０はブラシ保
持器９とブラシ保持器取付体８との間を接続する制振シ
ートである。この制振シート２０は、例えば、エラスト
マーシート（またはアルミ箔）と自己粘着性のある粘弾
性ポリマー層、もしくは粘弾性エラストマー層単体で構
成されたシートであり、粘弾性層で振動物の振動を吸収
する効果を持っている。従って、整流子５とブラシ１０
との摺動によるブラシ保持器９の振動は、制振シート２
０によって吸収されて著しく減衰され、振動を抑制で
き、振動による騒音の発生を抑えることができる。特
に、ブラシ１０が振動することによりブラシ保持器９と
の摩擦力によって、ブラシ１０とブラシ保持器９との間
にスティック（静止）状態とスリップ（すべり）状態と
が交互に来るスティックスリップ現象により、耳障りな
高い周波数の音が発生するが、制振シート２０によって
著しく減少させることができる。Embodiment 2. 2A and 2B are views showing a brush holding device for a rotary electric machine according to Embodiment 2 of the present invention, wherein FIG. 2A is a perspective view, FIG. 2B is a top view, and FIG.
(C) is a sectional view. The description of the same parts as those in the first embodiment will be omitted. In the figure, 20 is a vibration damping sheet that connects the brush holder 9 and the brush holder mounting body 8. The vibration damping sheet 20 is, for example, a sheet composed of an elastomer sheet (or an aluminum foil) and a self-adhesive viscoelastic polymer layer or a viscoelastic elastomer layer alone. Has the effect of absorbing. Therefore, the commutator 5 and the brush 10
The vibration of the brush retainer 9 due to the sliding with the vibration damping sheet 2
It is absorbed by 0 and is remarkably damped, vibration can be suppressed, and generation of noise due to vibration can be suppressed. In particular, due to a stick-slip phenomenon in which a stick (stationary) state and a slip (sliding) state alternate between the brush 10 and the brush holder 9 due to the frictional force with the brush holder 9 due to the vibration of the brush 10. Although a high frequency sound that is offensive to the ear is generated, it can be significantly reduced by the vibration damping sheet 20.
【００２０】実施の形態３．図３は、この発明の実施の
形態３による回転電機用ブラシ保持装置を示す図であ
り、図３（ａ）は斜視図、図３（ｂ）は上面図、図３
（ｃ）は断面図である。なお、上記実施の形態１と同様
の箇所の説明は省略する。図において、９ｅはブラシ保
持器９とブラシ保持器取付体８との間を接続する粘性を
有する緩衝材２１を盛り付けるための接続用突起であ
る。上記実施の形態２では、制振シート２０でブラシ保
持器９とブラシ保持器取付体８とを接続したが、本実施
の形態では、粘性を有する緩衝材２１で接続したもので
ある。粘性を有する緩衝材２１は、例えばシリコン材の
他、硬化後も粘性を有する接着剤、樹脂などが適用でき
る。上記実施の形態２における制振シート２０と同様
に、整流子５とブラシ１０との摺動によるブラシ保持器
９の振動は、緩衝材２１によって吸収されて著しく減衰
され、振動を抑制でき、振動による騒音の発生を抑える
ことができる。Embodiment 3. 3A and 3B are views showing a brush holding device for a rotary electric machine according to Embodiment 3 of the present invention, FIG. 3A is a perspective view, FIG. 3B is a top view, and FIG.
(C) is a sectional view. The description of the same parts as those in the first embodiment will be omitted. In the figure, 9e is a connection projection for mounting a viscous cushioning material 21 for connecting between the brush holder 9 and the brush holder mounting body 8. In Embodiment 2 described above, the brush holder 9 and the brush holder mounting body 8 are connected by the vibration damping sheet 20, but in the present embodiment, the cushioning material 21 having viscosity is connected. The viscous cushioning material 21 may be, for example, a silicon material, or an adhesive or resin that remains viscous even after curing. Similar to the vibration damping sheet 20 in the second embodiment, the vibration of the brush holder 9 due to the sliding of the commutator 5 and the brush 10 is absorbed by the cushioning material 21 and is significantly damped, so that the vibration can be suppressed. It is possible to suppress the generation of noise due to.
【００２１】実施の形態４．図４は、この発明の実施の
形態４による回転電機用ブラシ保持装置を示す図であ
り、図３（ａ）は斜視図、図３（ｂ）は上面図、図３
（ｃ）は断面図である。なお、上記実施の形態１と同様
の箇所の説明は省略する。図において、２２は中空角筒
状の弾性を有する緩衝材２２であり、緩衝材２２の中空
部に角状の接続用突起９ｅを嵌挿して、ブラシ保持器９
とブラシ保持器取付体８とを接続する。これにより、上
記実施の形態３と同様に、整流子５とブラシ１０との摺
動によるブラシ保持器９の振動は、緩衝材２２によって
吸収されて著しく減衰され、振動を抑制でき、振動によ
る騒音の発生を抑えることができる。Fourth Embodiment 4A and 4B are views showing a brush holding device for a rotating electric machine according to Embodiment 4 of the present invention, FIG. 3A is a perspective view, FIG. 3B is a top view, and FIG.
(C) is a sectional view. The description of the same parts as those in the first embodiment will be omitted. In the figure, reference numeral 22 denotes a hollow square tubular cushioning material 22 having elasticity, and a square cage-shaped connecting projection 9e is fitted into the hollow portion of the cushioning material 22 to form a brush holder 9
And the brush holder mounting body 8 are connected. As a result, similarly to the third embodiment, the vibration of the brush holder 9 due to the sliding of the commutator 5 and the brush 10 is absorbed by the cushioning material 22 and is significantly damped, so that the vibration can be suppressed and the noise caused by the vibration can be suppressed. Can be suppressed.
【００２２】なお、緩衝材２１及び２２の接続形態は、
ブラシ保持器９とブラシ保持器取付体８とを接続し、ブ
ラシ保持器９における振動を減衰させるという所望の効
果を達成できるものであれば、上記実施の形態３及び４
で説明したものに限らないことは言うまでもない。The connection form of the cushioning materials 21 and 22 is as follows.
As long as the desired effect of damping the vibration in the brush holder 9 can be achieved by connecting the brush holder 9 and the brush holder mounting body 8, the third and fourth embodiments described above can be achieved.
Needless to say, it is not limited to the one described in.
【００２３】実施の形態５．本発明によるブラシ保持装
置を、車載用電動パワーステアリングの駆動用モータに
適用すれば、車両運転時にすばやくハンドルを操舵した
時（スラローム走行時）や、路面舗装の悪い道（砂利道
など）を運転した時、路面からのキックバックによって
ハンドルが左右に小刻みに振れる現象時に聞こえるブラ
シとブラシ保持器とのカチカチという打撃音を抑制する
効果が得られる。また、車両運転時にゆっくりとハンド
ルを操舵した時（直進運転時のゆっくりとした左右微調
整時や比較的大きな曲率のカーブを運転時）に発生する
キーキーと聞こえる耳障りな音を抑制できる効果が得ら
れる。Embodiment 5. When the brush holding device according to the present invention is applied to a drive motor for an on-vehicle electric power steering, the steering wheel is swiftly steered during vehicle driving (slalom traveling), and the road is poorly paved (gravel road, etc.). When this is done, an effect of suppressing the clicking sound of the brush and the brush retainer, which is heard when the handle swings laterally in small steps due to kickback from the road surface, can be obtained. In addition, it is possible to suppress the jarring sound heard as a key when the steering wheel is slowly steered while driving the vehicle (slow left / right fine adjustment during straight driving or when driving a curve with a relatively large curvature). To be
【００２４】[0024]
【発明の効果】以上のように、請求項１記載の発明によ
れば、整流子と摺接するブラシを収納保持するブラシ保
持器、このブラシ保持器を配設固定する基板部とブラシ
保持器より外径側に位置して整流子の外径面と対向する
外壁部とからなるブラシ保持器取付体、ブラシ保持器と
共にブラシ保持器取付体に取付固定され、ブラシ保持器
の反整流子側開口部に位置してブラシとの間に介在する
スプリングの一端を保持する保持部が設けられたスプリ
ング保持器を備え、ブラシ保持器は、ブラシから伝達さ
れる振動を減衰させる材料で被覆したので、モータ反転
時のブラシ１０とブラシ保持器９との接触による打撃音
を抑制することができる効果が得られる。As described above, according to the first aspect of the invention, the brush retainer for accommodating and holding the brush in sliding contact with the commutator, the substrate portion for disposing and fixing the brush retainer, and the brush retainer are provided. A brush retainer mounting body that is located on the outer diameter side and has an outer wall portion that faces the outer diameter surface of the commutator, and is fixedly attached to the brush retainer mounting body together with the brush retainer, and the opening on the non-commutator side of the brush retainer is fixed. A spring holder provided with a holding portion for holding one end of a spring interposed between the brush and the brush, and the brush holder is covered with a material for damping the vibration transmitted from the brush, It is possible to obtain the effect of suppressing the impact sound caused by the contact between the brush 10 and the brush holder 9 when the motor is reversed.
【００２５】また、請求項２記載の発明によれば、スプ
リング及びスプリング保持器は、振動を減衰させる材料
で被覆したので、整流子と摺動しているブラシの振動に
よる騒音を抑制することができる効果が得られる。According to the second aspect of the present invention, since the spring and the spring retainer are coated with a material that damps vibration, noise due to vibration of the brush sliding on the commutator can be suppressed. The effect that can be obtained is obtained.
【００２６】また、請求項３記載の発明によれば、振動
を減衰させる材料はテフロン（登録商標）であるので、
ブラシの振動に対する減衰特性を良好なものとすること
ができる効果が得られる。According to the third aspect of the invention, the material for damping the vibration is Teflon (registered trademark).
It is possible to obtain the effect that the damping characteristic against the vibration of the brush can be improved.
【００２７】また、請求項４記載の発明によれば、整流
子と摺接するブラシを収納保持するブラシ保持器、この
ブラシ保持器を配設固定する基板部とブラシ保持器より
外径側に位置して整流子の外径面と対向する外壁部とか
らなるブラシ保持器取付体、ブラシ保持器と共にブラシ
保持取付体に取付固定され、ブラシ保持器の反整流子側
開口部に位置してブラシとの間に介在するスプリングの
一端を保持する保持部が設けられたスプリング保持器を
備え、ブラシ保持器とブラシ保持器取付体との間を、ブ
ラシから伝達される振動を減衰させる部材で接続したの
で、整流子とブラシとの摺動によるブラシ保持器の振動
を抑制でき、振動による騒音の発生を抑制することがで
きる効果が得られる。According to the invention of claim 4, a brush holder for accommodating and holding a brush that is in sliding contact with the commutator, a base portion for disposing and fixing the brush holder, and a position on the outer diameter side of the brush holder. The brush holder mounting body consisting of the outer diameter surface of the commutator and the outer wall portion facing the commutator is fixed to the brush holding mounting body together with the brush holder, and is located at the opening opposite to the commutator side of the brush holder. A spring holder provided with a holding portion for holding one end of a spring interposed between the brush holder and the brush holder mounting body, and connecting the member with a member for damping the vibration transmitted from the brush. Therefore, the vibration of the brush holder due to the sliding of the commutator and the brush can be suppressed, and the effect of suppressing the generation of noise due to the vibration can be obtained.
【００２８】また、請求項５記載の発明によれば、ブラ
シから伝達される振動を減衰させる部材は、粘性を有す
る緩衝部材であるので、整流子とブラシとの摺動による
ブラシ保持器の振動を抑制でき、振動による騒音の発生
を抑制することができる効果が得られる。According to the fifth aspect of the invention, since the member for damping the vibration transmitted from the brush is a viscous buffer member, the vibration of the brush holder due to the sliding of the commutator and the brush. It is possible to obtain the effect of suppressing the noise and suppressing the generation of noise due to vibration.
【００２９】また、請求項６記載の発明によれば、ブラ
シから伝達される振動を減衰させる部材は、弾性を有す
る緩衝部材であるので、整流子とブラシとの摺動による
ブラシ保持器の振動を抑制でき、振動による騒音の発生
を抑制することができる効果が得られる。According to the sixth aspect of the invention, since the member for damping the vibration transmitted from the brush is a buffer member having elasticity, the vibration of the brush holder due to the sliding of the commutator and the brush. It is possible to obtain the effect of suppressing the noise and suppressing the generation of noise due to vibration.
【００３０】また、請求項７記載の発明によれば、車載
用電動パワーステアリングの駆動用モータに適用したの
で、モータ反転時のブラシとブラシ保持器との接触によ
る打撃音を抑制することができる効果が得られる。Further, according to the invention of claim 7, since it is applied to the drive motor of the on-vehicle electric power steering, it is possible to suppress the impact sound caused by the contact between the brush and the brush holder when the motor is reversed. The effect is obtained.
【図面の簡単な説明】[Brief description of drawings]
【図１】 この発明の実施の形態１による回転電機用ブ
ラシ保持装置を示す斜視図、上面図及び断面図である。FIG. 1 is a perspective view, a top view, and a cross-sectional view showing a brush holding device for a rotary electric machine according to Embodiment 1 of the present invention.
【図２】 この発明の実施の形態２による回転電機用ブ
ラシ保持装置を示す斜視図、上面図及び断面図である。FIG. 2 is a perspective view, a top view and a sectional view showing a brush holding device for a rotating electric machine according to Embodiment 2 of the present invention.
【図３】 この発明の実施の形態３による回転電機用ブ
ラシ保持装置を示す斜視図、上面図及び断面図である。FIG. 3 is a perspective view, a top view, and a sectional view showing a brush holding device for a rotating electric machine according to a third embodiment of the present invention.
【図４】 この発明の実施の形態４による回転電機用ブ
ラシ保持装置を示す斜視図、上面図及び断面図である。FIG. 4 is a perspective view, a top view and a sectional view showing a brush holding device for a rotary electric machine according to a fourth embodiment of the present invention.
【図５】 従来の回転電機の構成を示す断面図である。FIG. 5 is a cross-sectional view showing a configuration of a conventional rotary electric machine.
【図６】 従来の回転電機用ブラシ保持装置を示す平面
図である。FIG. 6 is a plan view showing a conventional brush holding device for a rotary electric machine.
【図７】 従来の回転電機用ブラシ保持装置を示す斜視
図、上面図及び断面図である。FIG. 7 is a perspective view, a top view, and a cross-sectional view showing a conventional brush holding device for a rotary electric machine.
【図８】 ブラシの振動発生のメカニズムを説明する模
式図である。FIG. 8 is a schematic diagram illustrating a mechanism of vibration generation of a brush.
８ ブラシ保持器取付体、８ａ 外壁部、８ｂ 基板
部、９ ブラシ保持器、９ａ 側面壁、９ｂ 上面壁、
９ｃ カシメ用突起、９ｄ 位置保持用突起、９ｅ接続
用突起、１０ ブラシ、１１ スプリング、１３ スプ
リング保持器、１３ａ 側面壁、１３ｂ 保持部、２０
制振シート、２１ 粘性を有する緩衝材、２２ 弾性
を有する緩衝材、１００ 振動減衰材料。8 brush retainer mounting body, 8a outer wall portion, 8b substrate portion, 9 brush retainer, 9a side wall, 9b upper surface wall,
9c Caulking protrusion, 9d Position holding protrusion, 9e Connecting protrusion, 10 Brush, 11 Spring, 13 Spring retainer, 13a Side wall, 13b Holding part, 20
Damping sheet, 21 cushioning material having viscosity, 22 cushioning material having elasticity, 100 vibration damping material.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 芝田 明宏 東京都千代田区大手町二丁目６番２号 三 菱電機エンジニアリング株式会社内 Ｆターム(参考） 5H613 AA01 AA02 AA03 BB04 BB15 GA12 GA14 GB05 GB06 GB08 GB09 GB17 KK01 KK03 KK06 PP03 QQ05 SS06 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Akihiro Shibata 2-6-2 Otemachi 2-chome, Chiyoda-ku, Tokyo Ryoden Engineering Co., Ltd. F-term (reference) 5H613 AA01 AA02 AA03 BB04 BB15 GA12 GA14 GB05 GB06 GB08 GB09 GB17 KK01 KK03 KK06 PP03 QQ05 SS06
Claims (7)
ブラシ保持器、このブラシ保持器を配設固定する基板部
と上記ブラシ保持器より外径側に位置して上記整流子の
外径面と対向する外壁部とからなるブラシ保持器取付
体、上記ブラシ保持器と共に上記ブラシ保持器取付体に
取付固定され、上記ブラシ保持器の反整流子側開口部に
位置して上記ブラシとの間に介在するスプリングの一端
を保持する保持部が設けられたスプリング保持器を備
え、上記ブラシ保持器は、上記ブラシから伝達される振
動を減衰させる材料で被覆したことを特徴とする回転電
機用ブラシ保持装置。1. A brush holder for accommodating and holding a brush that is in sliding contact with a commutator, a base portion for disposing and fixing the brush holder, and an outer diameter surface of the commutator located on the outer diameter side of the brush holder. And a brush retainer mounting body formed of an outer wall portion facing each other, fixed to the brush retainer mounting body together with the brush retainer, and located between the brush retainer and the anti-commutator side opening of the brush retainer. A brush for a rotary electric machine, comprising: a spring retainer provided with a retainer for holding one end of a spring interposed between the brush retainer and the brush retainer, the brush retainer being coated with a material that attenuates vibration transmitted from the brush. Holding device.
動を減衰させる材料で被覆したことを特徴とする請求項
１記載の回転電機用ブラシ保持装置。2. The brush holding device for a rotary electric machine according to claim 1, wherein the spring and the spring retainer are coated with a material that damps vibrations.
ることを特徴とする請求項１または２記載の回転電機用
ブラシ保持装置。3. The brush holding device for a rotating electric machine according to claim 1, wherein the vibration damping material is fluororesin.
ブラシ保持器、このブラシ保持器を配設固定する基板部
と上記ブラシ保持器より外径側に位置して上記整流子の
外径面と対向する外壁部とからなるブラシ保持器取付
体、上記ブラシ保持器と共に上記ブラシ保持取付体に取
付固定され、上記ブラシ保持器の反整流子側開口部に位
置して上記ブラシとの間に介在するスプリングの一端を
保持する保持部が設けられたスプリング保持器を備え、
上記ブラシ保持器と上記ブラシ保持器取付体との間を、
上記ブラシから伝達される振動を減衰させる部材で接続
したことを特徴とする回転電機用ブラシ保持装置。4. A brush holder for accommodating and holding a brush that is in sliding contact with a commutator, a substrate portion for disposing and fixing the brush holder, and an outer diameter surface of the commutator located on the outer diameter side of the brush holder. And a brush retainer mounting body formed of an outer wall portion facing each other, fixedly attached to the brush retaining mounting body together with the brush retainer, and located between the brush retainer and the anti-commutator side opening of the brush retainer. A spring retainer provided with a retaining portion for retaining one end of the intervening spring,
Between the brush holder and the brush holder mounting body,
A brush holding device for a rotary electric machine, characterized in that the brush holding device is connected by a member for damping the vibration transmitted from the brush.
部材は、粘性を有する緩衝部材であることを特徴とする
請求項４記載の回転電機用ブラシ保持装置。5. The brush holding device for a rotary electric machine according to claim 4, wherein the member for damping the vibration transmitted from the brush is a buffer member having viscosity.
部材は、弾性を有する緩衝部材であることを特徴とする
請求項４記載の回転電機用ブラシ保持装置。6. The brush holding device for a rotary electric machine according to claim 4, wherein the member for damping the vibration transmitted from the brush is a buffer member having elasticity.
モータに適用したことを特徴とする請求項１から６のい
ずれか一項に記載の回転電機用ブラシ保持装置。7. The brush holding device for a rotary electric machine according to claim 1, wherein the brush holding device is applied to a drive motor for an on-vehicle electric power steering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001204630A JP3666420B2 (en) | 2001-07-05 | 2001-07-05 | Brush holding device for rotating electrical machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001204630A JP3666420B2 (en) | 2001-07-05 | 2001-07-05 | Brush holding device for rotating electrical machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003023757A true JP2003023757A (en) | 2003-01-24 |
| JP3666420B2 JP3666420B2 (en) | 2005-06-29 |
Family
ID=19041066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001204630A Expired - Lifetime JP3666420B2 (en) | 2001-07-05 | 2001-07-05 | Brush holding device for rotating electrical machine |
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| Country | Link |
|---|---|
| JP (1) | JP3666420B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300920C (en) * | 2003-11-13 | 2007-02-14 | 三菱电机株式会社 | Rotary motor |
-
2001
- 2001-07-05 JP JP2001204630A patent/JP3666420B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300920C (en) * | 2003-11-13 | 2007-02-14 | 三菱电机株式会社 | Rotary motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3666420B2 (en) | 2005-06-29 |
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