JP3619109B2 - Commutator motor - Google Patents

Commutator motor Download PDF

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Publication number
JP3619109B2
JP3619109B2 JP2000055540A JP2000055540A JP3619109B2 JP 3619109 B2 JP3619109 B2 JP 3619109B2 JP 2000055540 A JP2000055540 A JP 2000055540A JP 2000055540 A JP2000055540 A JP 2000055540A JP 3619109 B2 JP3619109 B2 JP 3619109B2
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Japan
Prior art keywords
terminal
connection
stator
brush
brush device
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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JP2000055540A
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Japanese (ja)
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JP2001251798A (en
Inventor
裕司 高橋
秀一 尾高
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Priority to JP2000055540A priority Critical patent/JP3619109B2/en
Priority to KR10-2000-0040926A priority patent/KR100367348B1/en
Publication of JP2001251798A publication Critical patent/JP2001251798A/en
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Publication of JP3619109B2 publication Critical patent/JP3619109B2/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K13/00Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/02Connections between slip-rings and windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K13/00Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/006Structural associations of commutators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K13/00Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/10Arrangements of brushes or commutators specially adapted for improving commutation
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/50Fastening of winding heads, equalising connectors, or connections thereto

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Motor Or Generator Frames (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、電気掃除機及び電動工具等に使用される整流子電動機に関するものである。
【0002】
【従来の技術】
図15は例えば実開昭61−126762号公報に示された従来の整流子電動機を示す半分断面の側面図、図16はブラシ装置取付け部の拡大断面図、図17は固定子組み立て体の平面図、図18はブラシ装置の側面図である。図において、1はフレームであり、一端は閉塞されて軸受2が取付られている。また、フレーム1の他端は開放されていて、その開放縁はファンガバー(図示せず)の取り付け部31を形成しているとともに、軸受3を取付けた軸受ホルダ32が横架されている。そして、軸受2、3にわたって回転子7の回転子軸8が支持されており、この軸8の一端側は軸受3を貫通している。この回転子軸8の貫通端部にはファン(図示せず)が取付けられている。また、回転子軸8の軸受2側には整流子10が取付けられている。
【0003】
フレーム1には回転子7を囲んで固定子11が収納されている。固定子11は固定子鉄心に一対の固定子巻線13を捲きつけて形成されている。この固定子11の軸受2側の端面には絶縁材料からなる端子台14が取付けられている。この端子台14には電源用の接続端子16が取付けられていて、これらの接続端子16には夫々固定子巻線13の電源側端末18が接続されている。そして、各接続端子16には、フレーム1の外面に取付けたコンデンサ33に繋がるコンデンサリード線34および電源用リード線35が夫々接続されている。また、端子台14には一対の端子固定部15が一体に設けられており、これらには夫々ブラシ装置用の接続端子36が取付けられている。各接続端子36には固定子巻線13のブラシ装置側端末19が各々接続されている。
【0004】
フレーム1には、一対のブラシ装置取付け孔20が設けられているとともに、この孔20をラジアル方向から挿脱可能に挿通して一対のブラシ装置37が各々取付けられている。38は着脱可能な取付けねじである。ブラシ装置37は、絶縁材料で形成されたブラシホルダ本体39、ブラシ40、端子接続金具41、及びブラシ押しばね42とから形成されている。また、ブラシホルダ本体39には筒部43が形成され、内部にはカーボンなどからなるブラシ40が軸方向に沿って摺動自在に収納されている。44はブラシ40が備えるピッグテイル(導線)を示している。
【0005】
ブラシホルダ本体39には筒部43とは別に筒部43と略平行な貫通孔45が形成されている。これにより、接続端子36の接続部位36Aの位置を固定子11と筒部43との間に配設できる。また、端子接続金具41は、筒部43の反整流子10側に位置されるばね受部46と、このばね受部46に一体に連なり貫通孔45内に弾性変形可能に位置される端子係合部47とを備えて略L字形に形成されている。端子係合部47は自らの弾性力で貫通孔45の内壁面への圧接を保持するようになっている。そして、端子係合部47の先端側(整流子10側)には、貫通孔45の整流子10側の孔縁に掛脱される切り起こし48が形成されている。この切り起こし48は端子接続金具41をブラシホルダ本体39に装着した際に貫通孔45から突出して、貫通孔45の孔縁に係るものである。
【0006】
また、端子接続金具41は、ばね受部46と端子係合部47との間に貫通孔45の内壁面に圧接される圧接凸部49を有している。さらに、貫通孔45の整流子10側の孔縁には傾斜面50を形成し、端子係合部47の貫通孔45内面への圧接箇所より整流子10側部位を、傾斜面50とは逆向きに傾斜させてある。切り起こし48は傾斜面50に形成されている。
【0007】
整流子電動機におけるブラシ装置37を組立てるには、ブラシホルダ本体39の筒部43の後端開口からブラシ40を挿入し、かつこれに続けて端子接続金具41の端子係合部47を貫通孔45の後端開口から挿入すればよい。このような操作により、端子接続金具41の傾斜部位50の先端部が貫通孔45を貫通すると同時に、切り起こし48が貫通孔45の孔縁に掛合するとともに、端子係合部47および圧接凸部49が貫通孔45の内面に圧接して、端子接続金具41が、そのはね受部46を筒部43の後端開口を塞ぐように位置されてブラシホルダ本体39に取付けられる。そして、このブラシ装置37を、固定子組立て体および回転子7が内蔵されたフレーム1に挿着するには、フレーム1のブラシ装置取付け孔20にブラシ装置37をフレーム1に対してラジアル方向から挿入して、取付けねじ38で固定すればよい。
【0008】
【発明が解決しようとする課題】
しかしながら、従来の構成では、端子接続金具、端子係合部を貫通孔に嵌入して電気的・機械的に接触接続しているため、端子係合部の形状は常に一定の形状・寸法を維持しないと固定子側の接続端子との間に隙間を生じ、接触不良の要因となる。また、最近の電気掃除機のように高入力・大電流を必要とするものに関しては、接触不良による突然のON/OFF現象によりスパークが発生し、接触部に酸化被膜が形成され、通電され難くなってしまう。また、大きなスパークの場合、接触部が破損してしまう恐れもあるという問題点があった。
【0009】
この発明は上記のような課題を解決するものであり、固定子側の接続端子とブラシ装置の端子接続金具との接続を確実に行い、部品の寸法精度や取付位置のばらつきなどに起因する多少の位置ずれに影響されることを少なくし、ブラシ装置のフレームへの取付け作業を自動化できるとともに、接続端子とブラシとの間にわたる電気的接続の信頼性を向上させる整流子電動機を得ることを目的とする。
【0010】
【課題を解決するための手段】
この発明に係る整流子電動機は、フレーム内に設けられた回転子及び固定子と、前記固定子に巻装された固定子巻線と、前記回転子に設けられた整流子と、前記固定子に設けられ前記固定子巻線の端部が接続される接続端子と、前記接続端子と電気的に接続する端子接続部と前記固定子巻線に電流を供給するブラシを摺動可能に収納する筒部とを有するブラシ装置を備え、前記接続端子部を有する端子接続金具が前記接続端子と嵌合し、かつ前記接続端子は前記端子接続部に対して前記回転子の回転方向側に設けられるものである。
また、接続端子の先端を回転方向側に傾斜させた挿入ガイドを形成したものである。
【0011】
【発明の実施の形態】
以下、この発明の実施の形態について図を用いて説明する。
図1はこの発明の実施の形態を示す整流子電動機の断面側面図、図2は図1に示す整流子電動機のブラシ装置取付部分の要部側面図、図3は整流子電動機のブラシ装置取付部分を示す要部底面図、図4は整流子電動機の固定子組み立て体を示す平面図、図5は整流子電動機の固定子組み立て体にブラシ装置が取付けられる状態を示す説明図、図6は整流子電動機の側面図、図7は固定子組み立て体を示す側面図、図8は整流子の回転方向とブラシ装置、接続端子の関係を示す説明図、図9はブラシ装置を示す正面図、図10はブラシホルダ本体を示す正面図、図11は図10に示すA−A部の断面図である。図中、矢印は回転子の回転方向を示すものである。
【0012】
図において、1はフレームであり、一端は閉塞されて軸受2が取付られている。また、フレーム1の他端は開放されていて、軸受3を収納する軸受ホルダ4aが形成されたブラケット4が取り付けられている。5はブラケット4のファンカバーである。また、ブラケット4にはエアガイド6が取り付けられている。軸受2、3には回転子7の回転子軸8がそれぞれ支持されており、この回転子軸8の一端側は軸受3を貫通している。9は回転子軸8の貫通端部に取付けられたファン、10は回転子軸8の軸受2側に取付けられた整流子である。
【0013】
フレーム1には回転子7を囲うように固定子11が配置されている。固定子11は固定子鉄心12に一対の固定子巻線13を巻きつけて形成されている。固定子11の軸受2側の端面には絶縁材からなる端子台14が取付けられている。この端子台14の角部にはそれぞれ端子固定部15が一体的に形成されており、交差する位置にはそれぞれ一対の電源用の接続端子16、一対のブラシ装置用の接続端子17が形成されている。そして、接続端子16には固定子巻線13の電源側端末18が接続され、接続端子17には固定子巻線13のブラシ装置側端末19が電気的に接続される。接続端子17は、フレーム1のラジアル方向に沿って延設されて後述する端子接続金具と接続する接続面17Aと、接続面17Aに形成された円筒状の押圧部17Bを有している。
【0014】
フレーム1の取付け孔20にはラジアル方向から挿脱可能に挿通した一対のブラシ装置21が取付けられている。なお、ブラシ装置21は取付けねじ22によりフレーム1に着脱可能に取付けられている。ブラシ装置21は、絶縁材のブラシホルダ本体23、整流子10に一方の端面が摺動して固定子巻線13に電流を供給するブラシ24、接続端子17と接続する接続部を有する端子接続金具25、及びブラシ押しばね26とから形成されている。また、ブラシホルダ本体23にはブラシ24を摺動自在に収納する筒部27が形成されている。筒部27は例えば金属性で、その両端は開放されている。28はブラシ24に取り付けられた導線である。
【0015】
ブラシホルダ本体23には筒部27とは別に筒部27と略平行な貫通孔29が形成されている。そして、この貫通孔29は接続端子17の接続面17Aと同一方向に貫通している。また、端子接続金具25はブラシホルダ本体23に対して、着脱可能に取付けられている。端子接続金具25は筒部27の反整流子側に位置されるばね受部30と一体的に形成されて、貫通孔29を貫通している。そして、ブラシ装置21をフレーム1の取付け孔20に挿入すると、端子接続金具25の接続部である先端が、接続面17Aと押圧部17Bとの間に差し込まれて、接続端子17と嵌合する。
【0016】
以上の構成により、端子接続金具25と接続端子17とが確実に固定することができ、端子接続金具25と接続端子17との間での接触不良を防ぐことができる。また、着脱も容易であるため、分解・修理などの作業性も向上する。さらに、自動組立てをより容易化することができる。
【0017】
また、接続端子17は、端子接続金具25より回転子7の回転方向側に配設されているので、端子接続金具25が回転子7の影響で回転方向側に移動しても、接続端子17がその力を受けることになる。つまり、図8(a)(b)に示すように、フレーム1とブラシ装置21との間には組立性などを考慮して、若干の隙間Δtが必要である。このため、整流子10の高速回転により生じる移動力Fの影響で、ブラシ24を介して、端子接続金具25は隙間Δtのため移動してしまう場合がある。しかしながら、接続端子17は端子固定部15により固定されており、かつ回転方向側に配置されているので、移動力Fが発生しても接続端子17がその力を受けることができる。したがって、端子接続金具25は移動力Fが発生しても接続端子17側へ移動することになるので、接触不良を起こすことなく、確実に接続端子17と接続することができる。
【0018】
なお、貫通孔は、筒部が挿入される穴と連通するようにしてもよい。また、ブラシ装置21の形状は、これに限ったものではなく、例えば図12に示すように、ばね受部30と一体的に構成された接続部を有する端子接続金具25の形状を上面から見て略L字上に形成し、接続端子17と接続する端子接続金具25の位置と筒部27の配置を若干ずらしたように構成してもよい。
【0019】
また、図13に示すように接続端子17の先端を回転方向側に傾斜させた挿入ガイド17Cを形成し、端子接続金具25をよりスムースに挿入しやすく構成してもよい。また、端子接続金具25も若干回転方向側に傾斜させてもよい。さらに、図14に示すように、挿入ガイド17Cを設けるとともに、端子接続金具25を挿入方向に対して約1°〜10°回転方向側に傾けるようにしてもスムースに挿入しやすい構成になる。
【0020】
【発明の効果】
以上のようにこの発明は、接続端子がブラシ装置の端子接続部に対して回転子の回転方向側に配置されているので、端子接続部が回転子からの影響で回転方向側に移動しても、接続端子がその力を受けることができ、接続端子と端子接続部とを確実に接続させることができるという効果がある。
【図面の簡単な説明】
【図1】この発明の実施の形態を示す整流子電動機の断面側面図である。
【図2】図1に示すブラシ装置取付部分の要部側面図である。
【図3】図1に示すブラシ装置取付部分の要部底面図である。
【図4】この発明の実施の形態を示す整流子電動機の固定子組み立て体の平面図である。
【図5】図4に示す整流子電動機の固定子組み立て体にブラシ装置が取付けられる状態を示す説明図である。
【図6】この発明の実施の形態を示す整流子電動機の側面図である。
【図7】この発明の実施の形態を示す整流子電動機の固定子組立て体の側面図である。
【図8】この発明の実施の形態を示す整流子電動機の整流子の回転方向とブラシ装置、接続端子の関係を示す説明図である。
【図9】この発明の実施の形態を示す整流子電動機のブラシ装置を示す正面図である。
【図10】この発明の実施の形態を示す整流子電動機ブラシホルダ本体を示す正面図である。
【図11】図10に示すA−A部の断面図である。。
【図12】この発明の実施の形態を示す他のブラシ装置を示す斜視図である。
【図13】この発明の実施の形態を示すブラシ装置取付部分の要部底面図である。
【図14】この発明の実施の形態を示すブラシ装置取付部分の要部底面図である。
【図15】従来の整流子電動機を示す半分断面の側面図である。
【図16】図15に示すブラシ装置取付け部の拡大断面図である。
【図17】図15に示す固定子組み立て体の平面図である。
【図18】図15に示すブラシ装置の側面図である。
【符号の説明】
1 フレーム、2 軸受、3 軸受、4 ブラケット、5 ファンカバー、
6 エアガイド、7 回転子、8 回転子軸、9 ファン、10 整流子、
11 固定子、12 固定子鉄心、13 固定子巻線、14 端子台、
15 端子固定部、16 電源用接続端子、17 ブラシ装置用接続端子、
18 電源側端末、17A 接続面、17B 円筒部、
19 ブラシ装置側端末、20 取付け孔、21 ブラシ装置、
22 取付けねじ、23 ブラシホルダ本体、24 ブラシ、
25 端子接続金具、26 押しばね、27 筒部、28 導線、
29 貫通穴、30 ばね受部。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a commutator motor used for a vacuum cleaner, a power tool, and the like.
[0002]
[Prior art]
15 is a half sectional side view showing a conventional commutator motor disclosed in, for example, Japanese Utility Model Publication No. 61-126762, FIG. 16 is an enlarged sectional view of a brush device mounting portion, and FIG. 17 is a plan view of a stator assembly. 18 and 18 are side views of the brush device. In the figure, reference numeral 1 denotes a frame, one end of which is closed and a bearing 2 is attached. The other end of the frame 1 is open, and the open edge forms a mounting portion 31 for a fan governor (not shown), and a bearing holder 32 to which the bearing 3 is mounted is horizontally mounted. A rotor shaft 8 of the rotor 7 is supported across the bearings 2 and 3, and one end side of the shaft 8 passes through the bearing 3. A fan (not shown) is attached to the penetrating end of the rotor shaft 8. A commutator 10 is attached to the bearing 2 side of the rotor shaft 8.
[0003]
A stator 11 is accommodated in the frame 1 so as to surround the rotor 7. The stator 11 is formed by winding a pair of stator windings 13 around a stator iron core. A terminal block 14 made of an insulating material is attached to the end surface of the stator 11 on the bearing 2 side. A connection terminal 16 for power supply is attached to the terminal block 14, and a power supply side terminal 18 of the stator winding 13 is connected to each of the connection terminals 16. Each connection terminal 16 is connected with a capacitor lead 34 and a power lead 35 connected to a capacitor 33 attached to the outer surface of the frame 1. A pair of terminal fixing portions 15 are integrally provided on the terminal block 14, and a connection terminal 36 for the brush device is attached to each of them. The brush device side terminals 19 of the stator windings 13 are connected to the connection terminals 36, respectively.
[0004]
The frame 1 is provided with a pair of brush device attachment holes 20 and a pair of brush devices 37 are attached to the frame 1 so that the holes 20 can be inserted and removed from the radial direction. Reference numeral 38 denotes a detachable mounting screw. The brush device 37 is formed of a brush holder main body 39, a brush 40, a terminal connection fitting 41, and a brush pressing spring 42 made of an insulating material. The brush holder main body 39 is formed with a cylindrical portion 43, and a brush 40 made of carbon or the like is accommodated therein so as to be slidable along the axial direction. Reference numeral 44 denotes a pigtail (conductive wire) included in the brush 40.
[0005]
In addition to the tube portion 43, the brush holder main body 39 is formed with a through hole 45 substantially parallel to the tube portion 43. Thereby, the position of the connection part 36 </ b> A of the connection terminal 36 can be disposed between the stator 11 and the cylindrical portion 43. The terminal connection fitting 41 includes a spring receiving portion 46 positioned on the side of the cylindrical portion 43 opposite to the commutator 10 and a terminal member that is integrally connected to the spring receiving portion 46 and positioned in the through hole 45 so as to be elastically deformable. It is formed in a substantially L shape with a joint portion 47. The terminal engaging portion 47 is configured to hold the pressure contact with the inner wall surface of the through hole 45 by its own elastic force. A cut-and-raised portion 48 is formed on the distal end side (commutator 10 side) of the terminal engaging portion 47 so as to be hooked and detached from the hole edge of the through-hole 45 on the commutator 10 side. This cut-and-raised portion 48 protrudes from the through hole 45 when the terminal connection fitting 41 is attached to the brush holder main body 39, and relates to the hole edge of the through hole 45.
[0006]
Further, the terminal connection fitting 41 has a pressure contact convex portion 49 that is pressed against the inner wall surface of the through hole 45 between the spring receiving portion 46 and the terminal engagement portion 47. Further, an inclined surface 50 is formed at the hole edge of the through hole 45 on the commutator 10 side, and the commutator 10 side portion is opposite to the inclined surface 50 from the press contact portion to the inner surface of the through hole 45 of the terminal engagement portion 47. It is tilted in the direction. The cut and raised 48 is formed on the inclined surface 50.
[0007]
In order to assemble the brush device 37 in the commutator motor, the brush 40 is inserted from the rear end opening of the tube portion 43 of the brush holder body 39, and subsequently, the terminal engaging portion 47 of the terminal connection fitting 41 is inserted into the through hole 45. What is necessary is just to insert from the rear-end opening. By such an operation, the tip end portion of the inclined portion 50 of the terminal connection fitting 41 penetrates the through-hole 45, and at the same time, the cut-and-raised portion 48 engages with the hole edge of the through-hole 45, and the terminal engaging portion 47 and the press-contact convex portion. 49 is in pressure contact with the inner surface of the through hole 45, and the terminal connection fitting 41 is attached to the brush holder main body 39 so as to close the splash receiving portion 46 of the rear end opening of the cylindrical portion 43. In order to insert the brush device 37 into the frame 1 in which the stator assembly and the rotor 7 are built, the brush device 37 is inserted into the brush device mounting hole 20 of the frame 1 from the frame 1 in the radial direction. What is necessary is just to insert and fix with the attachment screw 38.
[0008]
[Problems to be solved by the invention]
However, in the conventional configuration, since the terminal connection fitting and the terminal engaging portion are inserted into the through hole and electrically and mechanically connected to each other, the shape of the terminal engaging portion always maintains a constant shape and size. Otherwise, a gap will be formed between the connection terminals on the stator side, causing contact failure. In addition, for those that require a high input and a large current, such as a recent vacuum cleaner, a spark is generated due to a sudden ON / OFF phenomenon due to poor contact, and an oxide film is formed on the contact portion, making it difficult to energize. turn into. Further, in the case of a large spark, there is a problem that the contact portion may be damaged.
[0009]
The present invention solves the above-described problems, and reliably connects the connection terminals on the stator side to the terminal connection fittings of the brush device, and is somewhat caused by variations in the dimensional accuracy of parts and mounting positions. The object of the present invention is to obtain a commutator motor that can be less affected by the positional deviation of the motor, can automate the mounting operation of the brush device to the frame, and improves the reliability of the electrical connection between the connection terminal and the brush. And
[0010]
[Means for Solving the Problems]
The commutator motor according to the present invention includes a rotor and a stator provided in a frame, a stator winding wound around the stator, a commutator provided in the rotor, and the stator. A terminal connected to the end of the stator winding, a terminal connecting portion electrically connected to the connection terminal, and a brush for supplying current to the stator winding are slidably housed. A brush device having a tube portion , a terminal connection fitting having the connection terminal portion is fitted to the connection terminal , and the connection terminal is provided on the rotation direction side of the rotor with respect to the terminal connection portion. Is.
Further, an insertion guide is formed in which the tip of the connection terminal is inclined toward the rotation direction .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a sectional side view of a commutator motor showing an embodiment of the present invention, FIG. 2 is a side view of a main part of a brush device mounting portion of the commutator motor shown in FIG. 1, and FIG. 3 is a brush device mounting of the commutator motor. FIG. 4 is a plan view showing a stator assembly of a commutator motor, FIG. 5 is an explanatory diagram showing a state where a brush device is attached to the stator assembly of the commutator motor, and FIG. FIG. 7 is a side view showing the stator assembly, FIG. 8 is an explanatory view showing the relationship between the rotation direction of the commutator and the brush device, and the connection terminals, and FIG. 9 is a front view showing the brush device. FIG. 10 is a front view showing the brush holder body, and FIG. 11 is a cross-sectional view of the AA portion shown in FIG. In the figure, the arrow indicates the rotation direction of the rotor.
[0012]
In the figure, reference numeral 1 denotes a frame, one end of which is closed and a bearing 2 is attached. The other end of the frame 1 is open, and a bracket 4 on which a bearing holder 4a for housing the bearing 3 is formed is attached. Reference numeral 5 denotes a fan cover of the bracket 4. An air guide 6 is attached to the bracket 4. The bearings 2 and 3 support the rotor shaft 8 of the rotor 7. One end of the rotor shaft 8 penetrates the bearing 3. Reference numeral 9 denotes a fan attached to the penetrating end of the rotor shaft 8, and reference numeral 10 denotes a commutator attached to the bearing 2 side of the rotor shaft 8.
[0013]
A stator 11 is disposed on the frame 1 so as to surround the rotor 7. The stator 11 is formed by winding a pair of stator windings 13 around a stator core 12. A terminal block 14 made of an insulating material is attached to the end surface of the stator 11 on the bearing 2 side. Terminal fixing portions 15 are integrally formed at the corners of the terminal block 14, and a pair of connection terminals 16 for the power source and a pair of connection terminals 17 for the brush device are formed at the intersecting positions. ing. The power terminal 18 of the stator winding 13 is connected to the connection terminal 16, and the brush device side terminal 19 of the stator winding 13 is electrically connected to the connection terminal 17. The connection terminal 17 has a connection surface 17A that extends along the radial direction of the frame 1 and connects to a terminal connection fitting described later, and a cylindrical pressing portion 17B formed on the connection surface 17A.
[0014]
A pair of brush devices 21 that are detachably inserted from the radial direction are attached to the attachment holes 20 of the frame 1. The brush device 21 is detachably attached to the frame 1 with an attachment screw 22. The brush device 21 includes a brush holder body 23 made of an insulating material, a brush 24 whose one end surface slides on the commutator 10 and supplies current to the stator winding 13, and a terminal connection having a connection portion connected to the connection terminal 17. A metal fitting 25 and a brush push spring 26 are formed. Further, the brush holder body 23 is formed with a cylindrical portion 27 for slidably storing the brush 24. The cylindrical part 27 is metallic, for example, and both ends thereof are open. Reference numeral 28 denotes a conducting wire attached to the brush 24.
[0015]
The brush holder main body 23 is formed with a through-hole 29 that is substantially parallel to the cylindrical portion 27 in addition to the cylindrical portion 27. The through hole 29 penetrates in the same direction as the connection surface 17 </ b> A of the connection terminal 17. The terminal connection fitting 25 is detachably attached to the brush holder main body 23. The terminal connection fitting 25 is formed integrally with the spring receiving portion 30 positioned on the side opposite to the commutator of the cylindrical portion 27 and passes through the through hole 29. When the brush device 21 is inserted into the mounting hole 20 of the frame 1, the tip, which is a connection portion of the terminal connection fitting 25, is inserted between the connection surface 17 </ b> A and the pressing portion 17 </ b> B and is engaged with the connection terminal 17. .
[0016]
With the above configuration, the terminal connection fitting 25 and the connection terminal 17 can be securely fixed, and poor contact between the terminal connection fitting 25 and the connection terminal 17 can be prevented. Moreover, since it is easy to attach and detach, workability such as disassembly and repair is improved. Furthermore, automatic assembly can be facilitated.
[0017]
Further, since the connection terminal 17 is disposed on the rotation direction side of the rotor 7 with respect to the terminal connection fitting 25, even if the terminal connection fitting 25 moves to the rotation direction side due to the influence of the rotor 7, the connection terminal 17. Will receive that power. That is, as shown in FIGS. 8A and 8B, a slight gap Δt is required between the frame 1 and the brush device 21 in consideration of assembling property and the like. For this reason, the terminal connection fitting 25 may move due to the gap Δt through the brush 24 due to the influence of the moving force F generated by the high-speed rotation of the commutator 10. However, since the connection terminal 17 is fixed by the terminal fixing portion 15 and is disposed on the rotational direction side, the connection terminal 17 can receive the force even when the movement force F is generated. Therefore, since the terminal connection fitting 25 moves to the connection terminal 17 side even if the moving force F is generated, it can be reliably connected to the connection terminal 17 without causing a contact failure.
[0018]
In addition, you may make it a through-hole connect with the hole in which a cylinder part is inserted. Further, the shape of the brush device 21 is not limited to this. For example, as shown in FIG. 12, the shape of the terminal connection fitting 25 having the connection portion integrally formed with the spring receiving portion 30 is viewed from above. The terminal connection fitting 25 connected to the connection terminal 17 and the position of the cylindrical portion 27 may be slightly shifted from each other.
[0019]
Further, as shown in FIG. 13, an insertion guide 17C in which the tip of the connection terminal 17 is inclined in the rotation direction side may be formed so that the terminal connection fitting 25 can be inserted more smoothly. Further, the terminal connection fitting 25 may be slightly inclined toward the rotational direction. Furthermore, as shown in FIG. 14, the insertion guide 17C is provided, and the terminal connection fitting 25 can be smoothly inserted even if it is inclined about 1 ° to 10 ° with respect to the insertion direction.
[0020]
【The invention's effect】
As described above, according to the present invention, since the connection terminal is arranged on the rotation direction side of the rotor with respect to the terminal connection portion of the brush device, the terminal connection portion moves to the rotation direction side due to the influence from the rotor. The connection terminal can receive the force, and there is an effect that the connection terminal and the terminal connection portion can be reliably connected.
[Brief description of the drawings]
FIG. 1 is a sectional side view of a commutator motor showing an embodiment of the present invention.
FIG. 2 is a side view of the main part of the brush device mounting portion shown in FIG. 1;
FIG. 3 is a bottom view of the main part of the brush device mounting portion shown in FIG. 1;
FIG. 4 is a plan view of a stator assembly of a commutator motor showing an embodiment of the present invention.
5 is an explanatory view showing a state in which the brush device is attached to the stator assembly of the commutator motor shown in FIG. 4; FIG.
FIG. 6 is a side view of the commutator motor showing the embodiment of the present invention.
FIG. 7 is a side view of the stator assembly of the commutator motor showing the embodiment of the present invention.
FIG. 8 is an explanatory diagram showing the relationship between the rotation direction of the commutator of the commutator motor, the brush device, and the connection terminal according to the embodiment of the present invention.
FIG. 9 is a front view showing a brush device of a commutator motor showing an embodiment of the present invention.
FIG. 10 is a front view showing a commutator motor brush holder body showing an embodiment of the present invention.
11 is a cross-sectional view taken along a line AA shown in FIG. .
FIG. 12 is a perspective view showing another brush apparatus showing an embodiment of the present invention.
FIG. 13 is a bottom view of the essential part of the brush device mounting portion showing the embodiment of the present invention.
FIG. 14 is a bottom view of the essential part of the brush device mounting portion showing the embodiment of the present invention.
FIG. 15 is a side view of a half section showing a conventional commutator motor.
16 is an enlarged cross-sectional view of the brush device mounting portion shown in FIG.
17 is a plan view of the stator assembly shown in FIG. 15. FIG.
18 is a side view of the brush device shown in FIG.
[Explanation of symbols]
1 frame, 2 bearings, 3 bearings, 4 brackets, 5 fan covers,
6 Air guide, 7 Rotor, 8 Rotor shaft, 9 Fan, 10 Commutator,
11 Stator, 12 Stator core, 13 Stator winding, 14 Terminal block,
15 terminal fixing portion, 16 power supply connection terminal, 17 brush device connection terminal,
18 power supply side terminal, 17A connection surface, 17B cylindrical part,
19 brush device side terminal, 20 mounting hole, 21 brush device,
22 mounting screws, 23 brush holder body, 24 brushes,
25 terminal connection fittings, 26 push springs, 27 cylinders, 28 conductors,
29 through hole, 30 spring receiving part.

Claims (2)

フレーム内に設けられた回転子及び固定子と、前記固定子に巻装された固定子巻線と、前記回転子に設けられた整流子と、前記固定子に設けられ前記固定子巻線の端部が接続される接続端子と、前記接続端子と電気的に接続する端子接続部と前記固定子巻線に電流を供給するブラシを摺動可能に収納する筒部とを有するブラシ装置を備え、前記接続端子部を有する端子接続金具が前記接続端子と嵌合し、かつ前記接続端子は前記端子接続部に対して前記回転子の回転方向側に設けられることを特徴とする整流子電動機。A rotor and a stator provided in the frame, a stator winding wound around the stator, a commutator provided in the rotor, and a stator winding provided in the stator. A brush device having a connection terminal to which an end portion is connected; a terminal connection portion electrically connected to the connection terminal; and a cylindrical portion for slidably storing a brush for supplying a current to the stator winding. A commutator motor, wherein a terminal connection fitting having the connection terminal portion is fitted to the connection terminal , and the connection terminal is provided on a rotation direction side of the rotor with respect to the terminal connection portion. 接続端子の先端を回転方向側に傾斜させた挿入ガイドを形成したことを特徴とする請求項1に記載の整流子電動機。The commutator motor according to claim 1, wherein an insertion guide in which a tip of the connection terminal is inclined in the rotation direction side is formed.
JP2000055540A 2000-03-01 2000-03-01 Commutator motor Expired - Fee Related JP3619109B2 (en)

Priority Applications (2)

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JP2000055540A JP3619109B2 (en) 2000-03-01 2000-03-01 Commutator motor
KR10-2000-0040926A KR100367348B1 (en) 2000-03-01 2000-07-18 Commutator motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000055540A JP3619109B2 (en) 2000-03-01 2000-03-01 Commutator motor

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JP3619109B2 true JP3619109B2 (en) 2005-02-09

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KR102538580B1 (en) * 2016-01-25 2023-05-31 엘지이노텍 주식회사 Motor, apparatus for brake system

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Publication number Priority date Publication date Assignee Title
JPS63195397A (en) * 1987-02-06 1988-08-12 Matsushita Electric Ind Co Ltd Commutator motor-driven blower

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