JP2003088050A - Brush device - Google Patents
Brush deviceInfo
- Publication number
- JP2003088050A JP2003088050A JP2001270048A JP2001270048A JP2003088050A JP 2003088050 A JP2003088050 A JP 2003088050A JP 2001270048 A JP2001270048 A JP 2001270048A JP 2001270048 A JP2001270048 A JP 2001270048A JP 2003088050 A JP2003088050 A JP 2003088050A
- Authority
- JP
- Japan
- Prior art keywords
- brush
- commutator
- peripheral surface
- outer peripheral
- 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.)
- Pending
Links
Landscapes
- Motor Or Generator Current Collectors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、整流子付きモータ
に用いられるブラシ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brush device used in a motor with a commutator.
【０００２】[0002]
【従来の技術】整流子付きモータに用いられるブラシ装
置１００は、一般に、図５の如く、整流子１６０の外周
面１６２に摺接する略四角柱状のブラシ１２０、当該ブ
ラシ１２０を付勢するスプリング１３０、当該ブラシ１
２０及び当該スプリング１３０を間隙を持って径方向に
摺動自在に収容するブラシホルダ１４０、並びに当該ブ
ラシホルダ１４０を固定する基板１５０、から構成され
る。2. Description of the Related Art A brush device 100 used for a motor with a commutator generally has a brush 120 having a substantially rectangular prism shape which is in sliding contact with an outer peripheral surface 162 of a commutator 160 and a spring 130 for urging the brush 120, as shown in FIG. , The brush 1
20 and the spring 130, and a brush holder 140 that accommodates the spring 130 so as to be slidable in the radial direction, and a substrate 150 that fixes the brush holder 140.
【０００３】ここで、前記ブラシ１２０は、従来より、
前記ブラシ１２０と前記整流子１６０とのブラシ摺動音
を抑制するために、いきなり整流子１６０の外周面１６
２とブラシ１６０の摺接面１２２を全面摺接することを
避け、前記整流子１６０との摺接面１２２を前記外周面
１６２に対し傾斜させ、最も突出する一端１２２ｂのみ
で整流子１６０に摺接するテーパ状面１２２ａを形成
し、ブラシの摺接面１２２が徐々に整流子１６０の外周
面１６２と全面接触するものとしていた。Here, the brush 120 has
In order to suppress the brush sliding noise between the brush 120 and the commutator 160, the outer peripheral surface 16 of the commutator 160 is suddenly changed.
It is avoided that the sliding contact surface 122 of the brush 160 and the sliding contact surface 122 of the brush 160 are entirely slid, and the sliding contact surface 122 with the commutator 160 is inclined with respect to the outer peripheral surface 162, and slidably contacts with the commutator 160 only at the most protruding end 122b. The tapered surface 122a is formed so that the sliding contact surface 122 of the brush gradually comes into full contact with the outer peripheral surface 162 of the commutator 160.
【０００４】しかしながら、ブラシ１２０に多量の電流
を流す場合においては、回転軸１７０方向におけるブラ
シ１２０の高さを高くする必要が生じるが、この回転軸
方向に背の高いブラシ１２０の前記摺接面１２２をテー
パ状面にした場合には、ブラシ１２０が不安定となり特
に整流子１６０の回転円周方向に振動を生じ易くなり、
ブラシ１２０がブラシホルダ１４０を叩くことによって
生じるブラシ叩き音が発生することとなる。However, when a large amount of current is passed through the brush 120, it is necessary to increase the height of the brush 120 in the direction of the rotating shaft 170. The sliding contact surface of the brush 120 which is tall in the direction of the rotating shaft is required. When 122 is a tapered surface, the brush 120 becomes unstable, and vibration is likely to occur especially in the circumferential direction of rotation of the commutator 160,
A brush striking sound generated by the brush 120 striking the brush holder 140 is generated.
【０００５】この問題を解決する方法としては、図６に
示すような、整流子２６０の外周面２６２の回転軸２７
０方向においてブラシ２２０の摺接面２２２の両端２２
２ｂ、２２２ｃのみで摺接させるものがある。しかしな
がら、この方法では、この摺接する両端２２２ｂ、２２
２ｃに均等にスプリング２３０の付勢力を加える必要が
あるため縦長スプリング等の特別仕様部品を要するなど
コストの増加は避けられず、また、両端２２２ｂ、２２
２ｃの摩擦力が常に同一とはならないので、両端均等に
摩耗せず一端２２２ａのみを接触させた場合のような摺
接性を得られないとともに、ブラシ２２０の振動を十分
に抑制できず、上記のブラシ音の問題を解決できない。As a method for solving this problem, as shown in FIG. 6, the rotating shaft 27 of the outer peripheral surface 262 of the commutator 260 is shown.
Both ends 22 of the sliding contact surface 222 of the brush 220 in the 0 direction
There are some which make sliding contact only with 2b and 222c. However, according to this method, the sliding ends 222b, 22
Since it is necessary to apply the urging force of the spring 230 evenly to 2c, an increase in cost is unavoidable such as the need for specially-designed parts such as a vertically long spring, and both ends 222b, 22
Since the frictional force of 2c is not always the same, it is not possible to evenly wear the both ends and to obtain the sliding contact property as in the case of contacting only the one end 222a, and the vibration of the brush 220 cannot be sufficiently suppressed. Can't solve the brush sound problem.
【０００６】[0006]
【発明が解決しようとする課題】そこで、本発明は、モ
ータ回転軸方向に背の高いブラシを用いた整流子付きモ
ータに係るブラシ装置のブラシ摺動音及びブラシ叩き音
の発生を十分に低減するとともに、この装置を簡易で安
価に提供することを目的とした。Therefore, the present invention sufficiently reduces the generation of brush sliding noise and brush tapping noise in a brush device for a commutator-equipped motor using a brush that is tall in the direction of the motor rotation axis. In addition, it is an object of the present invention to provide this device simply and inexpensively.
【０００７】[0007]
【課題を解決するための手段】請求項１に記載の発明
は、モータ回転軸に同軸に固定された整流子の外周面に
摺接する略四角柱状のブラシと、当該ブラシを後方から
付勢するスプリングと、前記ブラシ及び当該スプリング
を間隙を持って収容するブラシホルダと、当該ブラシホ
ルダを固定する基板と、を備えた整流子付きモータに用
いられるブラシ装置であって、前記ブラシは、前記整流
子と摺接する摺接面が前記整流子の外周面に対し傾斜し
たテーパ状面に形成されているとともに、整流子の外周
面に最も突出した側であってモータ回転軸方向のブラシ
の側面にモータ回転軸方向であってブラシの内部又は外
部に向けて徐々に幅が狭くなる係合部がモータ回転軸に
直交するモータの径方向に延出形成され、前記ブラシホ
ルダは、当該係合部と対向する壁の内周面に前記係合部
と略同一形状であってモータ回転軸方向の高さが前記係
合部の深さ又は高さより大きい当該係合部と係合する被
係合部がモータの径方向に延出形成され、さらに、前記
ブラシは、前記整流子の外周面に向けて付勢されるとと
もに、前記ブラシが当該外周面側に最も突出する側であ
ってモータ回転軸方向のブラシホルダの壁に向けて付勢
されていることを要旨とする。According to a first aspect of the present invention, there is provided a brush having a substantially quadrangular prism shape slidably contacting an outer peripheral surface of a commutator fixed coaxially to a motor rotation shaft, and the brush is biased from the rear side. A brush device used in a motor with a commutator, comprising: a spring; a brush holder that accommodates the brush and the spring with a gap; and a substrate that fixes the brush holder, wherein the brush is the commutator. The sliding contact surface that is in sliding contact with the child is formed as a tapered surface that is inclined with respect to the outer peripheral surface of the commutator, and is the side most protruding from the outer peripheral surface of the commutator that is the side surface of the brush in the motor rotation axis direction. An engagement portion that is gradually narrowed toward the inside or the outside of the brush in the motor rotation axis direction is formed to extend in the radial direction of the motor orthogonal to the motor rotation axis, and the brush holder includes the engagement portion. Engagement portion which has substantially the same shape as the engagement portion and has a height in the motor rotation axis direction greater than the depth or height of the engagement portion on the inner peripheral surface of the opposing wall. Is formed so as to extend in the radial direction of the motor, and the brush is biased toward the outer peripheral surface of the commutator, and the brush is the side most protruding toward the outer peripheral surface side and the motor rotating shaft. The gist is that it is biased toward the wall of the brush holder in the direction.
【０００８】請求項２に記載の発明は、請求項１に記載
のブラシ装置において、前記凹部は三角形状の溝である
ことを要旨とする。A second aspect of the present invention provides the brush device according to the first aspect, wherein the recess is a triangular groove.
【０００９】請求項３に記載の発明は、請求項１及び請
求項２に記載のブラシ装置において、前記スプリングに
よって付勢される前記ブラシの後端面は、前記テーパ状
面とは逆方向に傾斜する逆テーパ状面に形成され、当該
ブラシは前記スプリングが当該逆テーパ状面に当接する
ことによって前記整流子の外周面に最も突出する側であ
ってモータ回転軸方向のブラシホルダの壁に向けて付勢
されていることを要旨とする。According to a third aspect of the present invention, in the brush device according to the first and second aspects, the rear end surface of the brush biased by the spring is inclined in a direction opposite to the tapered surface. Is formed on the reverse taper surface, and the brush is directed toward the wall of the brush holder in the motor rotation axis direction, which is the side most protruding from the outer peripheral surface of the commutator when the spring contacts the reverse taper surface. The main point is that they are urged.
【００１０】[0010]
【作用】請求項１に記載の発明によれば、ブラシ装置に
用いられるブラシは、前記整流子と摺接する摺接面が前
記整流子の外周面に対し傾斜したテーパ状面に形成され
ているとともに、整流子の外周面に最も突出した側であ
ってモータ回転軸方向のブラシの側面にモータ回転軸方
向であってブラシの内部又は外部に向けて徐々に幅が狭
くなる係合部がモータ回転軸に直交するモータの径方向
に延出形成されている。また、ブラシホルダは、当該係
合部と対向する壁の内周面に前記係合部と略同一形状で
あってモータ回転軸方向の高さが前記係合部の深さ又は
高さより大きい当該係合部と嵌合する被係合部がモータ
の径方向に延出形成されている。さらに、前記ブラシ
は、前記整流子の外周面に向けて付勢されるとともに、
前記ブラシが当該外周面側に最も突出する側であってモ
ータ回転軸方向のブラシホルダの壁に向けて付勢されて
いる。According to the invention described in claim 1, in the brush used in the brush device, the sliding contact surface which is in sliding contact with the commutator is formed into a tapered surface inclined with respect to the outer peripheral surface of the commutator. Along with the outermost surface of the commutator, the side surface of the brush in the motor rotation axis direction has an engaging portion that is gradually narrowed toward the inside or the outside of the brush in the motor rotation axis direction and in the motor rotation axis direction. It is formed so as to extend in the radial direction of the motor orthogonal to the rotation axis. In addition, the brush holder has a substantially same shape as the engaging portion on the inner peripheral surface of the wall facing the engaging portion, and the height in the motor rotation axis direction is greater than the depth or height of the engaging portion. An engaged portion that fits with the engaging portion is formed to extend in the radial direction of the motor. Further, the brush is biased toward the outer peripheral surface of the commutator,
The brush is biased toward the wall of the brush holder in the direction of the motor rotation axis, which is the side most protruding toward the outer peripheral surface side.
【００１１】従って、前記ブラシは前記整流子の外周面
側に最も突出するテーパ状面の先端のみで摺接するので
ブラシが初期より全面当りする場合のブラシ摺動音を抑
制でき、且つ、その先端側のブラシ側面に設けられた係
合部がブラシホルダの被係合部と係合してブラシのモー
タの回転円周方向への移動を規制するので、モータ回転
軸方向に背が高いブラシであっても振動を発生すること
がなくなり、ブラシがブラシホルダを叩くことによって
生じるブラシ叩き音を抑制できる。しかも、係合部及び
被係合部は、それぞれ、ブラシ及びブラシホルダに一体
に形成可能であり、新たな部品あるいは高精度部材を要
せず、簡易に製作可能である。Therefore, since the brush is slidably contacted only with the tip of the tapered surface most protruding to the outer peripheral surface side of the commutator, the brush sliding noise can be suppressed when the brush hits the entire surface from the initial stage, and the tip thereof can be suppressed. Since the engaging part provided on the side surface of the brush engages with the engaged part of the brush holder to restrict the movement of the brush in the circumferential direction of the motor rotation, a brush that is tall in the motor rotation axis direction can be used. Even if there is, vibration is not generated, and it is possible to suppress the brush striking sound generated by the brush striking the brush holder. Moreover, the engaging portion and the engaged portion can be formed integrally with the brush and the brush holder, respectively, and can be easily manufactured without requiring new parts or high-precision members.
【００１２】請求項２に記載の発明によれば、前記係合
部は三角形状の溝で形成されている。従って、係合部と
被係合部は共に三角状であるので、ブラシのモータの回
転円周方向への移動が規制されるとともに、ブラシのモ
ータの回転円周方向への傾斜が抑制される。即ち、一層
ブラシ摺動音及びブラシ叩き音を抑制できる。According to the invention of claim 2, the engaging portion is formed by a triangular groove. Therefore, since the engaging portion and the engaged portion are both triangular, movement of the brush in the circumferential direction of rotation of the motor is restricted, and inclination of the brush in the circumferential direction of rotation of the motor is suppressed. . That is, the brush sliding noise and the brush tapping noise can be further suppressed.
【００１３】請求項３に記載の発明によれば、前記スプ
リングによって付勢される前記ブラシの後端面は、前記
テーパ状面とは逆方向に傾斜する逆テーパ状面に形成さ
れ、当該ブラシは前記スプリングが当該逆テーパ状面に
当接することによって前記整流子の外周面に最も突出す
る側であってモータ回転軸方向のブラシホルダの壁に向
けて付勢されている。従って、一つの当該スプリングに
よって、ブラシは、前記整流子の外周面に向けて付勢さ
れるとともに、前記ブラシが前記整流子の外周面側に最
も突出する側であってモータ回転軸方向のブラシホルダ
の壁に向けて付勢されることになり、別の部品を要せ
ず、簡易に小スペースで製作可能となる。According to the third aspect of the present invention, the rear end surface of the brush urged by the spring is formed as an inverse tapered surface inclined in the opposite direction to the tapered surface, and the brush is When the spring comes into contact with the reverse tapered surface, the spring is urged toward the wall of the brush holder in the motor rotation axis direction, which is the most protruding side of the commutator outer peripheral surface. Therefore, the brush is urged toward the outer peripheral surface of the commutator by one of the springs, and the brush is the most protruding side toward the outer peripheral surface of the commutator and is the brush in the motor rotation axis direction. Since it is biased toward the wall of the holder, it can be easily manufactured in a small space without the need for another component.
【００１４】[0014]
【発明の実施の形態】以下、本発明を具現化した第一実
施例について図１及び図２に従って説明する。本発明に
係る整流子付きモータに用いられるブラシ装置１０は、
図１に示す如く、モータ回転軸７０に同軸に固定された
整流子６０の外周面６２に摺接し電力供給線２８を備え
た略四角柱状のブラシ２０と、当該ブラシ２０を後方か
ら付勢するスプリング３０と、前記ブラシ２０及び当該
スプリング３０を間隙を持って収容し一端が開放され前
記電力供給線２８を案内する案内孔４６を備えたボック
ス状のブラシホルダ４０と、当該ブラシホルダ４０を樹
脂一体成形した基板５０と、からなる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment embodying the present invention will be described below with reference to FIGS. The brush device 10 used in the motor with the commutator according to the present invention is
As shown in FIG. 1, a brush 20 having a substantially rectangular prism shape that is in sliding contact with an outer peripheral surface 62 of a commutator 60 that is coaxially fixed to a motor rotation shaft 70 and that includes a power supply line 28, and urges the brush 20 from the rear. The spring 30, the brush 20 and the box-shaped brush holder 40, which accommodates the spring 20 and the spring 30 with a gap and has one end opened to guide the power supply line 28, and the brush holder 40 are made of resin. And a substrate 50 integrally formed.
【００１５】ここで、ブラシ２０は、図１に示す如く、
前記整流子６０の外周面６２と摺接する摺接面２２が前
記整流子６０の外周面６２に対し傾斜したテーパ状面２
２ａに形成され、この最も突出する一端２２ｂのみで整
流子６０に摺接する。また、ブラシ２０は、図２に示す
如く、整流子６０の外周面６２に最も突出した側であっ
てモータ回転軸７０方向のブラシ２０の側面２４にモー
タ回転軸７０方向であってブラシ２０の内部に向けて徐
々に幅が狭くなる係合部としての三角状の溝２４ａをモ
ータ回転軸７０に直交するモータの径方向に延出形成し
ている。Here, the brush 20 is, as shown in FIG.
The tapered surface 2 in which the sliding contact surface 22 that is in sliding contact with the outer peripheral surface 62 of the commutator 60 is inclined with respect to the outer peripheral surface 62 of the commutator 60.
2a is formed, and only the most protruding one end 22b is in sliding contact with the commutator 60. Further, as shown in FIG. 2, the brush 20 is located on the side most protruding from the outer peripheral surface 62 of the commutator 60 and on the side surface 24 of the brush 20 in the direction of the motor rotating shaft 70 and in the direction of the motor rotating shaft 70. A triangular groove 24a as an engaging portion whose width is gradually narrowed toward the inside is formed so as to extend in the radial direction of the motor orthogonal to the motor rotation shaft 70.
【００１６】これに対し、前記ブラシホルダ４０は、図
２に示す如く、当該溝２４ａと対向する壁４４の内周面
に前記溝２４ａと略同一形状であってモータ回転軸７０
方向の高さが前記溝２４ａの深さより大きくて当該溝２
４ａと係合する被係合部としての三角状の突起４４ａを
モータの径方向に延出形成している。On the other hand, as shown in FIG. 2, the brush holder 40 has substantially the same shape as the groove 24a on the inner peripheral surface of the wall 44 facing the groove 24a and has the motor rotating shaft 70.
The height in the direction is larger than the depth of the groove 24a,
A triangular protrusion 44a as an engaged portion that engages with 4a is formed so as to extend in the radial direction of the motor.
【００１７】これにより、後述するようにブラシ２０が
スプリング３０によってブラシホルダ４０の壁４４に向
けて付勢されれば、ブラシホルダ４０には前記溝２４ａ
と対向する壁４４の内周面に前記溝２４ａと略同一形状
であってモータ回転軸７０方向の高さが前記溝２４ａの
深さより大きくて当該溝２４ａと嵌合する被係合部とし
ての三角状の突起４４ａが形成されているので、ブラシ
２０の前記側面２４は前記突起４４ａを除き前記壁４４
に当接しない。即ち、前記溝２４ａと突起４４ａは確実
に当接係合することになる。Accordingly, when the brush 20 is urged toward the wall 44 of the brush holder 40 by the spring 30, as will be described later, the groove 24a is formed in the brush holder 40.
Is formed on the inner peripheral surface of the wall 44 that faces the groove 24a, the height of which is larger than the depth of the groove 24a in the direction of the motor rotating shaft 70, and the groove 24a serves as an engaged portion that fits into the groove 24a. Since the triangular protrusions 44a are formed, the side surface 24 of the brush 20 does not include the wall 44 except the protrusions 44a.
Does not come into contact with. That is, the groove 24a and the protrusion 44a are surely brought into contact with each other.
【００１８】さらに、前記スプリング３０によって付勢
される前記ブラシ２０の後端面２６は、図１に示す如
く、前記テーパ状面２２ａとは逆方向に傾斜する逆テー
パ状面２６ａに形成され、当該ブラシ２０は、前記スプ
リング３０が当該逆テーパ状面２６ａに当接することに
よって、前記整流子６０の外周面６２に向けて付勢され
るとともに、前記整流子６０の外周面６２に最も突出す
る側であってモータ回転軸７０方向のブラシホルダ４０
の壁４４に向けて付勢される。Further, as shown in FIG. 1, the rear end surface 26 of the brush 20 biased by the spring 30 is formed as a reverse taper surface 26a inclined in the opposite direction to the taper surface 22a. The brush 20 is urged toward the outer peripheral surface 62 of the commutator 60 by the spring 30 contacting the reverse tapered surface 26a, and the side most protruding from the outer peripheral surface 62 of the commutator 60. And the brush holder 40 in the direction of the motor rotating shaft 70
Is urged toward the wall 44 of the.
【００１９】以上の構成において、ブラシ装置１０に係
るブラシ２０の前記電力供給線２８に電力が供給される
と、前記スプリング３０によって付勢された前記ブラシ
２０から摺接する前記整流子６０に電力が送付され、図
示しないアーマチャが回転する。In the above structure, when electric power is supplied to the electric power supply line 28 of the brush 20 of the brush device 10, the electric power is supplied to the commutator 60 slidingly contacted from the brush 20 urged by the spring 30. It is sent and the armature (not shown) rotates.
【００２０】また、前記ブラシ２０は前記整流子６０の
外周面側に最も突出するテーパ状面２２ａの先端２２ｂ
のみで摺接するのでブラシ２０が初期より全面当りする
場合のブラシ摺動音を抑制できる。それと同時に、その
先端２２ｂ側のブラシ２０の側面２４に設けられた三角
状の溝２４ａがブラシホルダ４０の三角状の突起４４ａ
と係合してブラシ２０のモータの回転円周方向への移動
を規制するので、モータ回転軸７０方向に背が高いブラ
シを含めブラシ２０は振動を発生することがなくなり、
ブラシ２０がブラシホルダ４０を叩くことによって生じ
るブラシ叩き音を抑制できることになる。特に、嵌合す
る溝２４ａと突起４４ａは、共に三角状であるので、モ
ータの円周方向の移動及び傾斜が抑制される。Further, the brush 20 has a tip 22b of a tapered surface 22a which projects most toward the outer peripheral surface of the commutator 60.
Since the sliding contact is achieved only by itself, it is possible to suppress the brush sliding noise when the brush 20 contacts the entire surface from the initial stage. At the same time, the triangular groove 24a provided on the side surface 24 of the brush 20 on the side of the tip 22b thereof forms the triangular protrusion 44a of the brush holder 40.
Since the movement of the brush 20 in the circumferential direction of the rotation of the motor is regulated by engaging with the brush 20, the brush 20 including the tall brush in the direction of the motor rotation shaft 70 does not generate vibration,
This makes it possible to suppress the brush striking sound generated by the brush 20 striking the brush holder 40. In particular, since the fitting groove 24a and the protrusion 44a are both triangular, movement and inclination of the motor in the circumferential direction are suppressed.
【００２１】また、前記スプリング３０によって付勢さ
れる前記ブラシ２０の後端面２６は、前記テーパ状面２
２ａとは逆方向に傾斜する逆テーパ状面２６ａに形成さ
れ、当該ブラシ２０は前記スプリング３０が当該逆テー
パ状面２６ａに当接することによって前記整流子６０の
外周面６２側に最も突出する側であってモータ回転軸７
０方向のブラシホルダ４０の壁４４に向けて付勢されて
いるので、一つの当該スプリング３０によって、ブラシ
２０は、前記整流子６０の外周面６２に向けて付勢され
るとともに、前記ブラシ２０が前記整流子６０の外周面
６２側に最も突出する側であってモータ回転軸方向のブ
ラシホルダ４０の壁４４に向けて付勢されることにな
り、別の部品を要せず、簡易に小スペースで製作可能と
なる。しかも、溝２４ａ及び突起４４ａは、それぞれ、
ブラシ２０及びブラシホルダ４０に一体に形成されてい
るので、新たな部品あるいは高精度部材を要せず、簡易
に製作可能である。The rear end surface 26 of the brush 20 biased by the spring 30 is the tapered surface 2
2a is formed on the reverse tapered surface 26a inclined in the opposite direction to 2a, and the brush 20 is the most protruding side to the outer peripheral surface 62 side of the commutator 60 when the spring 30 contacts the reverse tapered surface 26a. And the motor rotating shaft 7
Since the brush 20 is biased toward the wall 44 of the brush holder 40 in the 0 direction, the brush 20 is biased toward the outer peripheral surface 62 of the commutator 60 by one of the springs 30 and at the same time. Is urged toward the wall 44 of the brush holder 40 in the motor rotation axis direction, which is the side most protruding to the outer peripheral surface 62 side of the commutator 60, and does not require another component, and can be simply It can be manufactured in a small space. Moreover, the groove 24a and the protrusion 44a are respectively
Since it is formed integrally with the brush 20 and the brush holder 40, it can be easily manufactured without requiring new parts or high-precision members.
【００２２】尚、上記実施例では、係合部及び被係合部
を三角状としたが、図３の如く、半円状２４ｂ、４４ｂ
であってもよい。上記と略同様の効果を得る。また、前
記突起４４ａをブラシ２０に前記溝２４ａをブラシホル
ダ４０に設けるものであってもよい。In the above embodiment, the engaging portion and the engaged portion have a triangular shape, but as shown in FIG. 3, the semicircular shapes 24b and 44b.
May be An effect similar to the above is obtained. Further, the protrusion 44a may be provided in the brush 20 and the groove 24a may be provided in the brush holder 40.
【００２３】また、上記実施例では、ブラシホルダ４０
並びに突起４４ａを基板と一体に樹脂成形したが、図４
の如く、ブラシホルダを耐熱性のある金属製の断面コ字
状のボックス４７と平板状の敷板４８とし、その敷板４
８に突起４８ａを設けてもよい。上記と同様の効果を得
る。Further, in the above embodiment, the brush holder 40
Also, the protrusion 44a is resin-molded integrally with the substrate.
As described above, the brush holder is made of a heat-resistant metal box 47 having a U-shaped cross section and a flat plate 48.
8 may be provided with a protrusion 48a. The same effect as above is obtained.
【００２４】[0024]
【発明の効果】以上詳述したように、請求項１記載の本
発明によれば、ブラシは整流子に先端のみで摺接し、且
つ、ブラシの側面に設けられた係合部がブラシホルダの
被係合部と係合してブラシのモータの回転円周方向への
移動を規制するので、モータの回転軸方向に背の高いブ
ラシを含め、モータの回転時における、ブラシ摺動音及
びブラシ叩き音を抑制できる。しかも、係合部及び被係
合部は、それぞれ、ブラシ及びブラシホルダに一体に形
成可能であり、新たな部品あるいは高精度部材を要せ
ず、簡易に製作可能である。As described above in detail, according to the present invention as set forth in claim 1, the brush is in sliding contact with the commutator only at the tip, and the engaging portion provided on the side surface of the brush is the brush holder. Since the movement of the brush in the circumferential direction of the rotation of the motor is restricted by engaging with the engaged portion, the brush sliding noise and the brush at the time of rotation of the motor including the tall brush in the rotation axis direction of the motor The tapping noise can be suppressed. Moreover, the engaging portion and the engaged portion can be formed integrally with the brush and the brush holder, respectively, and can be easily manufactured without requiring new parts or high-precision members.
【００２５】また、請求項２に記載の発明によれば、係
合部と被係合部は共に三角状であるので、ブラシのモー
タの回転円周方向への移動が規制されるとともに、ブラ
シのモータの回転円周方向への傾斜が抑制される。即
ち、一層ブラシ摺動音及びブラシ叩き音を抑制できる。Further, according to the second aspect of the present invention, since the engaging portion and the engaged portion are both triangular, movement of the brush in the circumferential direction of the motor is restricted and the brush is brushed. Of the motor in the circumferential direction of rotation is suppressed. That is, the brush sliding noise and the brush tapping noise can be further suppressed.
【００２６】また、請求項３に記載の発明によれば、一
つのスプリングによって、ブラシは、整流子の外周面に
向けて付勢されるとともに、ブラシホルダの壁に向けて
付勢されることになる。従って、別の部品を要せず、簡
易に小スペースで製作可能となる。According to the third aspect of the present invention, the one spring urges the brush toward the outer peripheral surface of the commutator and also toward the wall of the brush holder. become. Therefore, it is possible to easily manufacture in a small space without the need for separate parts.
【００２７】[0027]
【図１】本発明のブラシ装置１０に係るブラシ２０の中
心における径方向断面図。FIG. 1 is a radial cross-sectional view at the center of a brush 20 according to a brush device 10 of the present invention.
【図２】図１のＡ矢視図。FIG. 2 is a view on arrow A in FIG.
【図３】本発明の別例図。FIG. 3 is another example of the present invention.
【図４】本発明の他の別例図。FIG. 4 is another example view of the present invention.
【図５】従来技術のブラシ装置１００に係るブラシ１２
０の中心における径方向断面図。FIG. 5 is a brush 12 according to a conventional brush device 100.
A radial direction sectional view in the center of 0.
【図６】従来技術の他のブラシ装置２００に係るブラシ
２２０の中心における径方向断面図。FIG. 6 is a radial cross-sectional view at the center of a brush 220 according to another conventional brush device 200.
１０、１００、２００… ブラシ装置、２０、１２０、
２２０…ブラシ、２２、１２２、２２２… 摺接面、２
２ａ、１２２ａ… テーパ状面、２２ｂ、１２２ｂ… 摺
接面の一端、２４… ブラシの側面、２４ａ… 三角状の
溝、２４ｂ… 半円状の溝、２６… ブラシの後端面、２
６ａ… 逆テーパ状面、２８… 電力供給線、３０、１３
０、２３０… スプリング、４０、１４０、２４０… ブ
ラシホルダ、４４… 壁、４４ａ… 三角状の突起、４４
ｂ… 半円状の突起、４６… 案内孔、４７… ブラシホ
ルダのボックス、４８… ブラシホルダの敷板、４８ａ
… 突起、５０、１５０、２５０… 基板、６０、１６
０、２６０…整流子、６２、１６２、２６２… 外周
面、７０、１７０、２７０… モータ回転軸、２２２
ｂ、２２２ｃ… 摺接面の両端10, 100, 200 ... Brush device, 20, 120,
220 ... Brushes, 22, 122, 222 ... Sliding contact surface, 2
2a, 122a ... Tapered surface, 22b, 122b ... One end of sliding surface, 24 ... Brush side surface, 24a ... Triangular groove, 24b ... Semicircular groove, 26 ... Brush rear end surface, 2
6a ... Inverse tapered surface, 28 ... Power supply line, 30, 13
0, 230 ... Spring, 40, 140, 240 ... Brush holder, 44 ... Wall, 44a ... Triangular protrusion, 44
b ... Semi-circular protrusion, 46 ... Guide hole, 47 ... Brush holder box, 48 ... Brush holder base plate, 48a
... Protrusions, 50, 150, 250 ... Substrates, 60, 16
0, 260 ... Commutator, 62, 162, 262 ... Outer peripheral surface, 70, 170, 270 ... Motor rotation shaft 222
b, 222c ... Both ends of the sliding contact surface
Claims (3)
の外周面に摺接する略四角柱状のブラシと、当該ブラシ
を後方から付勢するスプリングと、前記ブラシ及び当該
スプリングを間隙を持って収容するブラシホルダと、当
該ブラシホルダを固定する基板と、を備えた整流子付き
モータに用いられるブラシ装置であって、前記ブラシ
は、前記整流子と摺接する摺接面が前記整流子の外周面
に対し傾斜したテーパ状面に形成されているとともに、
整流子の外周面に最も突出した側であってモータ回転軸
方向のブラシの側面にモータ回転軸方向であってブラシ
の内部又は外部に向けて徐々に幅が狭くなる係合部がモ
ータ回転軸に直交するモータの径方向に延出形成され、
前記ブラシホルダは、当該係合部と対向する壁の内周面
に前記係合部と略同一形状であってモータ回転軸方向の
高さが前記係合部の深さ又は高さより大きい当該係合部
と係合する被係合部がモータの径方向に延出形成され、
さらに、前記ブラシは、前記整流子の外周面に向けて付
勢されるとともに、前記ブラシが当該外周面側に最も突
出する側であってモータ回転軸方向のブラシホルダの壁
に向けて付勢されていることを特徴とするブラシ装置。1. A brush in the shape of a substantially quadrangular prism that slidably contacts the outer peripheral surface of a commutator that is coaxially fixed to a motor rotation shaft, a spring that biases the brush from the rear, and a gap between the brush and the spring. A brush device for use in a motor with a commutator, comprising: a brush holder for accommodating; and a substrate for fixing the brush holder, wherein the brush has a sliding contact surface that is in sliding contact with the commutator and has an outer periphery of the commutator. In addition to being formed on the tapered surface inclined to the surface,
On the side of the brush that is most protruded from the outer peripheral surface of the commutator and on the side surface of the brush in the direction of the motor rotation axis, there is an engagement portion that is gradually narrowed toward the inside or outside of the brush in the direction of the motor rotation axis. Is formed to extend in the radial direction of the motor orthogonal to
The brush holder has an inner peripheral surface of a wall facing the engaging portion and has substantially the same shape as the engaging portion, and the height in the motor rotation axis direction is larger than the depth or height of the engaging portion. The engaged portion that engages with the joint portion is formed to extend in the radial direction of the motor,
Further, the brush is urged toward the outer peripheral surface of the commutator, and is urged toward the wall of the brush holder in the motor rotation axis direction, which is the side on which the brush most protrudes toward the outer peripheral surface side. The brush device is characterized by being.
特徴とする請求項１に記載のブラシ装置。2. The brush device according to claim 1, wherein the engagement portion is a triangular groove.
ブラシの後端面は、前記テーパ状面とは逆方向に傾斜す
る逆テーパ状面に形成され、当該ブラシは前記スプリン
グが当該逆テーパ状面に当接することによって前記整流
子の外周面に最も突出する側であってモータ回転軸方向
のブラシホルダの壁に向けて付勢されていることを特徴
とする請求項１及び請求項２に記載のブラシ装置。3. A rear end surface of the brush, which is biased by the spring, is formed as an inverse taper surface that is inclined in a direction opposite to the tapered surface, and the brush has the spring as the inverse taper surface. The abutment is urged toward the wall of the brush holder in the direction of the motor rotation axis on the side most protruding from the outer peripheral surface of the commutator. Brush device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001270048A JP2003088050A (en) | 2001-09-06 | 2001-09-06 | Brush device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001270048A JP2003088050A (en) | 2001-09-06 | 2001-09-06 | Brush device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003088050A true JP2003088050A (en) | 2003-03-20 |
Family
ID=19095754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001270048A Pending JP2003088050A (en) | 2001-09-06 | 2001-09-06 | Brush device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003088050A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101172620B1 (en) * | 2011-02-11 | 2012-08-08 | 주식회사 만도 | Brush type motor |
| KR101177270B1 (en) | 2010-12-31 | 2012-08-28 | 주식회사 인팩 | Dc motor |
| KR20140106596A (en) * | 2011-12-23 | 2014-09-03 | 로베르트 보쉬 게엠베하 | Commutator motor |
| DE102013217077A1 (en) * | 2013-08-27 | 2015-03-05 | Robert Bosch Gmbh | Brush device for an electric machine and electric machine |
| KR101927345B1 (en) * | 2017-06-02 | 2018-12-10 | 디와이오토 주식회사 | Brush apparatus for DC motor provided with improved anti-vibration and anti-noise structure |
| CN111525747A (en) * | 2019-02-02 | 2020-08-11 | 罗伯特·博世有限公司 | Electric machine |
-
2001
- 2001-09-06 JP JP2001270048A patent/JP2003088050A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101177270B1 (en) | 2010-12-31 | 2012-08-28 | 주식회사 인팩 | Dc motor |
| KR101172620B1 (en) * | 2011-02-11 | 2012-08-08 | 주식회사 만도 | Brush type motor |
| KR20140106596A (en) * | 2011-12-23 | 2014-09-03 | 로베르트 보쉬 게엠베하 | Commutator motor |
| KR101962098B1 (en) * | 2011-12-23 | 2019-03-27 | 로베르트 보쉬 게엠베하 | Commutator motor |
| DE102013217077A1 (en) * | 2013-08-27 | 2015-03-05 | Robert Bosch Gmbh | Brush device for an electric machine and electric machine |
| US9231456B2 (en) | 2013-08-27 | 2016-01-05 | Robert Bosch Gmbh | Brush device for an electric machine, and electric machine |
| KR101927345B1 (en) * | 2017-06-02 | 2018-12-10 | 디와이오토 주식회사 | Brush apparatus for DC motor provided with improved anti-vibration and anti-noise structure |
| CN111525747A (en) * | 2019-02-02 | 2020-08-11 | 罗伯特·博世有限公司 | Electric machine |
| CN111525747B (en) * | 2019-02-02 | 2024-04-09 | 罗伯特·博世有限公司 | Motor with a motor housing |
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