JP2017205016A5 - - Google Patents
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- JP2017205016A5 JP2017205016A5 JP2017162915A JP2017162915A JP2017205016A5 JP 2017205016 A5 JP2017205016 A5 JP 2017205016A5 JP 2017162915 A JP2017162915 A JP 2017162915A JP 2017162915 A JP2017162915 A JP 2017162915A JP 2017205016 A5 JP2017205016 A5 JP 2017205016A5
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- armature shaft
- end portion
- armature
- brush
- along
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- 238000005452 bending Methods 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 claims description 2
- 230000002093 peripheral Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
Description
本発明の減速機構付モータは、有底筒状に形成されたヨークと、前記ヨークの内周面に固定された４極のマグネットと、前記ヨークに回転自在に収容されたアーマチュアと、を備え、前記アーマチュアは、前記ヨークに回転自在に支持されたアーマチュア軸と、前記アーマチュア軸に固定され、前記マグネットに対して所定の隙間を介して配置されたアーマチュアコアと、前記アーマチュアコアに巻装されたアーマチュアコイルと、前記アーマチュア軸に固定されたコンミテータと、を有するモータ部と、前記ヨークの開口側に固定されたギヤケースと、前記ギヤケースに収容され、前記アーマチュア軸の回転を減速する減速機構と、を有する減速機構部と、略平行な一対の平坦部および前記平坦部に連なる円弧部を備えるベースと、前記ベースに一体に設けられ、天壁と一対の側壁とを備えたトンネル形状に形成された一対のブラシホルダと、前記ブラシホルダに摺動自在に保持されるとともに前記コンミテータに摺接するブラシと、前記アーマチュア軸の軸方向に延び、前記ブラシホルダに近接して前記ベースに一体に設けられた支柱と、前記支柱が挿通されるコイル本体と、前記コイル本体の一端側を形成するコイル基端部と、前記コイル本体の他端側を形成し所定の曲率半径に設定された先端曲部とを備えた捩りコイルバネと、を有する給電ユニットと、を備えた正逆回転可能な減速機構付モータであって、前記ベースおよび前記ブラシホルダは射出成形品であり、前記ブラシは、前記アーマチュア軸の径方向外側に配置される基端部と、前記基端部に一体に設けられ、かつ前記基端部よりも前記アーマチュア軸の径方向内側に配置される先端部と、を有し、前記アーマチュア軸の軸方向に沿い、前記天壁と対向する前記基端部の一側面には、導電線が電気的に接続され、前記アーマチュア軸の回転方向に沿う前記先端部の両側面の間隔が、前記アーマチュア軸の回転方向に沿う前記基端部の両側面の間隔よりも幅狭となるよう形成され、前記アーマチュア軸の回転方向に沿う前記ブラシの両側面で、かつ前記基端部と前記先端部との間には、それぞれテーパ面が設けられ、前記アーマチュア軸の軸方向に沿い、前記天壁と対向する前記先端部の一側面の周囲および前記基端部の一側面の周囲と、前記ブラシの前記天壁と対向する一側面における前記テーパ面に対応した箇所の周囲には、前記ブラシの両側面に向けて傾斜された傾斜面が設けられ、一対の前記ブラシホルダは、前記アーマチュア軸の回転方向に互いに９０度ずれて配置され、それぞれの前記ブラシホルダは、前記アーマチュア軸の径方向に沿う外側から内側に向けて前記天壁に形成され、前記導電線を案内する案内溝と、前記アーマチュア軸の径方向に沿う外側から内側に向けて前記案内溝と平行に前記側壁の一方に形成され、前記捩りコイルバネの先端曲部を案内するバネ用スリットと、前記アーマチュア軸の回転方向に沿う前記基端部の両側を支持する一対の基端側支持部と、前記アーマチュア軸の回転方向に沿う前記先端部の両側を支持する一対の先端側支持部と、を有し、前記アーマチュア軸の径方向に沿う前記先端部の長さ寸法は、前記アーマチュア軸の径方向に沿う前記先端側支持部の長さ寸法よりも長く形成され、前記アーマチュア軸の径方向に沿う前記基端部の長さ寸法は、前記アーマチュア軸の径方向に沿う前記基端側支持部の長さ寸法よりも短く形成されていることを特徴とする。 A motor with a speed reduction mechanism according to the present invention includes a yoke formed in a bottomed cylindrical shape, a four-pole magnet fixed to the inner peripheral surface of the yoke, and an armature rotatably accommodated in the yoke. The armature is wound around the armature shaft that is rotatably supported by the yoke, an armature core that is fixed to the armature shaft and disposed with a predetermined gap with respect to the magnet, and the armature core. A motor unit having a commutator fixed to the armature shaft, a gear case fixed to the opening side of the yoke, and a speed reduction mechanism housed in the gear case for reducing the rotation of the armature shaft. A base having a pair of substantially parallel flat portions and an arc portion connected to the flat portions, and the base A pair of brush holders formed in a tunnel shape having a top wall and a pair of side walls, a brush slidably held by the brush holder and slidably in contact with the commutator, A column that extends in the axial direction of the armature shaft and is provided integrally with the base in the vicinity of the brush holder, a coil main body through which the column is inserted, and a coil base end that forms one end side of the coil main body A motor with a speed reduction mechanism capable of forward and reverse rotation, comprising a power supply unit, and a torsion coil spring having a distal end curved portion formed at the other end side of the coil body and set to a predetermined radius of curvature. The base and the brush holder are injection-molded products, and the brush is provided integrally with the base end portion disposed radially outside the armature shaft and the base end portion. A distal end portion disposed radially inward of the armature shaft with respect to the base end portion, and on one side surface of the base end portion facing the top wall along the axial direction of the armature shaft, Conductive wires are electrically connected, and the distance between both side surfaces of the distal end portion along the rotation direction of the armature shaft is narrower than the distance between both side surfaces of the base end portion along the rotation direction of the armature shaft. Formed on the both side surfaces of the brush along the rotation direction of the armature shaft, and between the base end portion and the tip end portion, respectively, tapered surfaces are provided along the axial direction of the armature shaft, Around the periphery of one side surface of the distal end portion facing the top wall and the periphery of one side surface of the base end portion, and around the portion corresponding to the tapered surface on the one side surface facing the top wall of the brush, To both sides of the brush The pair of brush holders are disposed 90 degrees apart from each other in the rotation direction of the armature shaft, and each brush holder is arranged from the outer side to the inner side along the radial direction of the armature shaft. A guide groove formed on the top wall for guiding the conductive wire, and formed on one of the side walls in parallel with the guide groove from the outer side along the radial direction of the armature shaft to the inner side. A slit for a spring for guiding a distal end bending portion of a coil spring, a pair of proximal end support portions for supporting both sides of the proximal end portion along the rotation direction of the armature shaft, and the distal end portion along the rotation direction of the armature shaft A pair of tip side support portions that support both sides of the armature shaft, and the length dimension of the tip portion along the radial direction of the armature shaft is the tip length along the radial direction of the armature shaft The length of the base end along the radial direction of the armature shaft is longer than the length of the base side support along the radial direction of the armature shaft. It is characterized by being formed short.
Claims (1)
前記ヨークの内周面に固定された４極のマグネットと、
前記ヨークに回転自在に収容されたアーマチュアと、を備え、
前記アーマチュアは、前記ヨークに回転自在に支持されたアーマチュア軸と、前記アーマチュア軸に固定され、前記マグネットに対して所定の隙間を介して配置されたアーマチュアコアと、前記アーマチュアコアに巻装されたアーマチュアコイルと、前記アーマチュア軸に固定されたコンミテータと、
を有するモータ部と、
前記ヨークの開口側に固定されたギヤケースと、
前記ギヤケースに収容され、前記アーマチュア軸の回転を減速する減速機構と、
を有する減速機構部と、
略平行な一対の平坦部および前記平坦部に連なる円弧部を備えるベースと、
前記ベースに一体に設けられ、天壁と一対の側壁とを備えたトンネル形状に形成された一対のブラシホルダと、
前記ブラシホルダに摺動自在に保持されるとともに前記コンミテータに摺接するブラシと、
前記アーマチュア軸の軸方向に延び、前記ブラシホルダに近接して前記ベースに一体に設けられた支柱と、
前記支柱が挿通されるコイル本体と、前記コイル本体の一端側を形成するコイル基端部と、前記コイル本体の他端側を形成し所定の曲率半径に設定された先端曲部とを備えた捩りコイルバネと、
を有する給電ユニットと、
を備えた正逆回転可能な減速機構付モータであって、
前記ベースおよび前記ブラシホルダは射出成形品であり、
前記ブラシは、
前記アーマチュア軸の径方向外側に配置される基端部と、
前記基端部に一体に設けられ、かつ前記基端部よりも前記アーマチュア軸の径方向内側に配置される先端部と、
を有し、
前記アーマチュア軸の軸方向に沿い、前記天壁と対向する前記基端部の一側面には、導電線が電気的に接続され、
前記アーマチュア軸の回転方向に沿う前記先端部の両側面の間隔が、前記アーマチュア軸の回転方向に沿う前記基端部の両側面の間隔よりも幅狭となるよう形成され、
前記アーマチュア軸の回転方向に沿う前記ブラシの両側面で、かつ前記基端部と前記先端部との間には、それぞれテーパ面が設けられ、
前記アーマチュア軸の軸方向に沿い、前記天壁と対向する前記先端部の一側面の周囲および前記基端部の一側面の周囲と、前記ブラシの前記天壁と対向する一側面における前記テーパ面に対応した箇所の周囲には、前記ブラシの両側面に向けて傾斜された傾斜面が設けられ、
一対の前記ブラシホルダは、前記アーマチュア軸の回転方向に互いに９０度ずれて配置され、
それぞれの前記ブラシホルダは、
前記アーマチュア軸の径方向に沿う外側から内側に向けて前記天壁に形成され、前記導電線を案内する案内溝と、
前記アーマチュア軸の径方向に沿う外側から内側に向けて前記案内溝と平行に前記側壁の一方に形成され、前記捩りコイルバネの先端曲部を案内するバネ用スリットと、
前記アーマチュア軸の回転方向に沿う前記基端部の両側を支持する一対の基端側支持部と、
前記アーマチュア軸の回転方向に沿う前記先端部の両側を支持する一対の先端側支持部と、
を有し、
前記アーマチュア軸の径方向に沿う前記先端部の長さ寸法は、前記アーマチュア軸の径方向に沿う前記先端側支持部の長さ寸法よりも長く形成され、
前記アーマチュア軸の径方向に沿う前記基端部の長さ寸法は、前記アーマチュア軸の径方向に沿う前記基端側支持部の長さ寸法よりも短く形成されていることを特徴とする減速機構付モータ。 A yoke formed in a bottomed cylindrical shape;
A four-pole magnet fixed to the inner peripheral surface of the yoke;
An armature rotatably accommodated in the yoke,
The armature is wound around the armature shaft that is rotatably supported by the yoke, an armature core that is fixed to the armature shaft and disposed with a predetermined gap with respect to the magnet, and the armature core. An armature coil, a commutator fixed to the armature shaft,
A motor unit having
A gear case fixed to the opening side of the yoke;
A speed reduction mechanism that is housed in the gear case and decelerates the rotation of the armature shaft;
A speed reduction mechanism having
A base including a pair of substantially parallel flat portions and an arc portion connected to the flat portion;
A pair of brush holders provided integrally with the base and formed in a tunnel shape with a top wall and a pair of side walls;
A brush that is slidably held by the brush holder and slidably contacts the commutator;
Struts extending in the axial direction of the armature shaft and provided integrally with the base in the vicinity of the brush holder;
A coil main body through which the column is inserted; a coil base end portion forming one end side of the coil main body; and a distal end bending portion forming the other end side of the coil main body and set to a predetermined radius of curvature. A torsion coil spring;
A power supply unit having
A motor with a speed reduction mechanism capable of forward and reverse rotation,
The base and the brush holder are injection molded products,
The brush
A proximal end portion disposed radially outward of the armature shaft;
A distal end portion provided integrally with the proximal end portion and disposed radially inside the armature shaft with respect to the proximal end portion;
Have
A conductive wire is electrically connected to one side surface of the base end portion facing the top wall along the axial direction of the armature shaft,
An interval between both side surfaces of the distal end portion along the rotation direction of the armature shaft is formed to be narrower than an interval between both side surfaces of the base end portion along the rotation direction of the armature shaft,
Tapered surfaces are provided on both side surfaces of the brush along the rotation direction of the armature shaft, and between the proximal end portion and the distal end portion, respectively.
The taper surface along the axial direction of the armature shaft and around one side surface of the distal end portion and one side surface of the base end portion facing the top wall and on one side surface facing the top wall of the brush In the vicinity of the location corresponding to, there are provided inclined surfaces inclined toward both side surfaces of the brush,
The pair of brush holders are arranged 90 degrees apart from each other in the rotation direction of the armature shaft,
Each of the brush holders
A guide groove formed on the top wall from the outside along the radial direction of the armature shaft to guide the conductive wire;
A spring slit that is formed on one of the side walls in parallel with the guide groove from the outside along the radial direction of the armature shaft, and that guides the tip bending portion of the torsion coil spring;
A pair of base end side support portions for supporting both sides of the base end portion along the rotation direction of the armature shaft;
A pair of tip side support portions that support both sides of the tip portion along the rotation direction of the armature shaft;
Have
The length dimension of the tip portion along the radial direction of the armature shaft is formed longer than the length dimension of the tip side support portion along the radial direction of the armature shaft,
A speed reduction mechanism characterized in that a length dimension of the base end portion along the radial direction of the armature shaft is shorter than a length dimension of the base end side support portion along the radial direction of the armature shaft. With motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017162915A JP6375422B2 (en) | 2017-08-28 | 2017-08-28 | Motor with reduction mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017162915A JP6375422B2 (en) | 2017-08-28 | 2017-08-28 | Motor with reduction mechanism |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016001511A Division JP6200972B2 (en) | 2016-01-07 | 2016-01-07 | Motor with reduction mechanism |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018137310A Division JP6531205B2 (en) | 2018-07-23 | 2018-07-23 | Motor with speed reduction mechanism |
| JP2018137311A Division JP6531206B2 (en) | 2018-07-23 | 2018-07-23 | Motor with speed reduction mechanism |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2017205016A JP2017205016A (en) | 2017-11-16 |
| JP2017205016A5 true JP2017205016A5 (en) | 2018-01-18 |
| JP6375422B2 JP6375422B2 (en) | 2018-08-15 |
Family
ID=60322574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017162915A Expired - Fee Related JP6375422B2 (en) | 2017-08-28 | 2017-08-28 | Motor with reduction mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6375422B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116742892B (en) * | 2023-05-15 | 2024-01-02 | 株洲桓基电气股份有限公司 | Wiper motor for high-speed rail motor train unit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58159882U (en) * | 1982-04-16 | 1983-10-25 | 三菱電機株式会社 | DC motor electric brush device |
| JPS6172067U (en) * | 1984-10-16 | 1986-05-16 | ||
| JP4213312B2 (en) * | 1999-10-08 | 2009-01-21 | アスモ株式会社 | Motor feeding brush device |
| DE10347764A1 (en) * | 2003-10-14 | 2005-05-12 | Bsh Bosch Siemens Hausgeraete | Insulated carbon brush guide |
| US8624464B2 (en) * | 2005-05-20 | 2014-01-07 | Schlumberger Technology Corporation | Brush and brush housing arrangement to mitigate hydrodynamic brush lift in fluid-immersed electric motors |
| JP2008131677A (en) * | 2006-11-16 | 2008-06-05 | Mitsuba Corp | Brush holder and motor employing this brush holder |
| JP5006713B2 (en) * | 2007-06-28 | 2012-08-22 | 株式会社ミツバ | Brushed electric motor |
| JP5188885B2 (en) * | 2007-06-28 | 2013-04-24 | 株式会社ミツバ | Motor equipment |
| JP2011234437A (en) * | 2010-04-23 | 2011-11-17 | Asmo Co Ltd | Brush holder device, motor and wiper motor |
-
2017
- 2017-08-28 JP JP2017162915A patent/JP6375422B2/en not_active Expired - Fee Related
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