JP2007124757A - Motor structure with rotation detector - Google Patents

Motor structure with rotation detector Download PDF

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JP2007124757A
JP2007124757A JP2005311160A JP2005311160A JP2007124757A JP 2007124757 A JP2007124757 A JP 2007124757A JP 2005311160 A JP2005311160 A JP 2005311160A JP 2005311160 A JP2005311160 A JP 2005311160A JP 2007124757 A JP2007124757 A JP 2007124757A
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resolver
stator
bus bar
motor
motor structure
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JP4701341B2 (en
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Hisafumi Mimura
尚史 三村
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Tamagawa Seiki Co Ltd
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Tamagawa Seiki Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To enhance the characteristics of a resolver, while shortening the entire length by providing a resolver stator on a busbar which is provided on the stator of a motor. <P>SOLUTION: In the motor structure with a rotation detector, a resolver stator (15) is provided on a busbar (9) which is provided on the stator (3) of a motor (8), and a resolver (17) is formed by a resolver rotor (16) provided on the rotating shaft (7), and the entire length of the motor (8) is shortened and the characteristics of the resolver (17) are improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、回転検出器付モータ構造に関し、特に、モータのステータの端面に設けられケーシング内に位置するバスバーにレゾルバを設けることにより、モータ全長の短縮化、発生応力の低減、信号系の端子の取付位置の集中化による信頼性等の向上を得るようにするための新規な改良に関する。   The present invention relates to a motor structure with a rotation detector, and in particular, by providing a resolver on a bus bar provided in an end surface of a stator of a motor and positioned in a casing, the motor overall length is shortened, generated stress is reduced, signal system terminals The present invention relates to a novel improvement for improving the reliability and the like by centralizing the mounting positions of the.

従来、用いられていたこの種の回転検出器付モータ構造としては、例えば、特許文献1及び2に開示されているモータエンコーダの構成を挙げることができるが、レゾルバを用いたモータ構造としては、図4で示される構造が提案されている。   As this type of motor structure with a rotation detector that has been used conventionally, for example, the configuration of a motor encoder disclosed in Patent Documents 1 and 2 can be cited, but as a motor structure using a resolver, The structure shown in FIG. 4 has been proposed.

すなわち、図4において符号1で示されるものはケーシングであり、このケーシング1の内壁1aにはステータコイル2を有するステータ3が設けられている。
前記ケーシング1の前蓋部1bと後蓋部1cに設けられた一対の軸受4、5間にはロータ6を有する回転軸7が回転自在に設けられ、前記ステータ3とロータ6とによりモータ8を構成している。
That is, what is indicated by reference numeral 1 in FIG. 4 is a casing, and an inner wall 1 a of the casing 1 is provided with a stator 3 having a stator coil 2.
A rotating shaft 7 having a rotor 6 is rotatably provided between a pair of bearings 4 and 5 provided on the front lid portion 1 b and the rear lid portion 1 c of the casing 1, and a motor 8 is provided by the stator 3 and the rotor 6. Is configured.

前記ステータ3の端面3aに設けられ全体形状が輪状をなすバスバー9には、組立時に前記ロータ6を案内するための中心開口10が形成されていると共に、その面部11には前記モータ8に対する信号を入力するためのモータ入力端子12が設けられている。   A bus bar 9 provided on the end surface 3a of the stator 3 and having an annular shape as a whole is formed with a central opening 10 for guiding the rotor 6 during assembly, and a signal for the motor 8 is provided on the surface 11 thereof. Is provided with a motor input terminal 12.

前記後蓋部1cには筒部13が形成され、この筒部13の内壁13aには、レゾルバステータコイル14を有するレゾルバステータ15が設けられ、前記軸受5を貫通して前記筒部13内に突出した前記回転軸7の突出軸部7aには、前記レゾルバステータ15に対応するレゾルバロータ16が設けられている。
従って、前記レゾルバステータ15とレゾルバロータ16によりレゾルバ17を構成している。
A cylindrical portion 13 is formed in the rear lid portion 1 c, and a resolver stator 15 having a resolver stator coil 14 is provided on an inner wall 13 a of the cylindrical portion 13, and penetrates the bearing 5 into the cylindrical portion 13. A resolver rotor 16 corresponding to the resolver stator 15 is provided on the projecting shaft portion 7 a of the projecting rotating shaft 7.
Therefore, the resolver 17 is constituted by the resolver stator 15 and the resolver rotor 16.

特開昭62−278408号公報JP 62-278408 A 米国特許第5912541号明細書US Pat. No. 5,912,541

従来の回転検出器付モータ構造は、以上のように構成されていたため、次のような課題が存在していた。
すなわち、前述の筒部は金属で構成され、レゾルバステータをこの筒部内に圧入、隙間ばめで組み込んだ後に、ブッシュなどを嵌め合い部に圧入又はブッシュとハウジングのカシメ等によって固定させていたため、レゾルバの取付けに多くの部品を必要としていた。
また、ケーシングの軸受の外側にレゾルバが設けられているため、モータの全長の短縮化が困難であった。
また、筒部へのレゾルバの前述の方法による取付けにより、取付時の発生応力がレゾルバにも影響し、特性の低下にもつながっていた。
Since the conventional motor structure with a rotation detector is configured as described above, the following problems exist.
In other words, the above-described cylindrical portion is made of metal, and after the resolver stator is press-fitted into the cylindrical portion and assembled by clearance fit, the bush or the like is fixed to the fitting portion by press-fitting or caulking between the bush and the housing. Needed many parts to install.
In addition, since the resolver is provided outside the bearing of the casing, it is difficult to shorten the total length of the motor.
Further, due to the above-described method of attaching the resolver to the cylindrical portion, the stress generated during the attachment also affects the resolver, leading to deterioration of the characteristics.

本発明による回転検出器付モータ構造は、ケーシングに設けられたステータと、前記ケーシングに設けられた軸受に回転自在に設けられロータを有する回転軸と、前記ステータの端面に設けられ輪状をなすと共に前記ステータのステータコイルを覆うように形成されたバスバーと、前記バスバーの中心開口の開口内面に設けられレゾルバステータコイルを有するレゾルバステータと、前記回転軸に設けられたレゾルバロータとを備え、前記レゾルバステータとレゾルバロータによりレゾルバを形成し、前記レゾルバ及びバスバーは前記ケーシングの内側に位置している構成であり、また、前記バスバーは樹脂よりなり、前記バスバーに形成され熱溶解による溶解固定部によって前記レゾルバステータが固定されている構成であり、また、前記中心開口には、内側に向けて延設された複数の突起部が形成され、前記溶解固定部は前記突起部に形成されている構成であり、また、前記バスバーの周縁には、前記ステータコイルに接続されたモータ入力端子が設けられ、前記レゾルバステータコイルに接続されたレゾルバ入出力端子が前記バスバーに設けられている構成であり、また、前記軸受は一対よりなり、前記レゾルバは前記各軸受間に位置している構成である。   A motor structure with a rotation detector according to the present invention comprises a stator provided in a casing, a rotating shaft rotatably provided on a bearing provided in the casing, and a ring provided on an end surface of the stator. A bus bar formed to cover the stator coil of the stator; a resolver stator having a resolver stator coil provided on an inner surface of a central opening of the bus bar; and a resolver rotor provided on the rotating shaft. A resolver is formed by a stator and a resolver rotor, and the resolver and the bus bar are located inside the casing, and the bus bar is made of resin, and is formed on the bus bar by a melting and fixing part by heat melting. The resolver stator is fixed, and A plurality of projecting portions extending inward are formed in the central opening, and the melting and fixing portion is formed on the projecting portion, and the stator coil is disposed on the periphery of the bus bar. A motor input terminal connected to the resolver stator coil, and a resolver input / output terminal connected to the resolver stator coil is provided on the bus bar, and the bearing comprises a pair, and the resolver includes the respective bearings. It is the structure located in between.

本発明による回転検出器付モータ構造は、以上のように構成されているため、次のような効果を得ることができる。
すなわち、レゾルバがケーシング内の各軸受間のバスバーに設けられているため、モータの全長を従来よりも大幅に短縮化させることができる。
また、バスバーが樹脂で形成されているため、レゾルバステータ取り付け時の応力発生がなく、レゾルバへの悪影響を防止することができる。
また、バスバーにモータ入力端子とレゾルバ入出力端子とが設けられているため、モータ及びレゾルバの信号系の入出力の接続が容易となり、モータの組立ても容易となる。
Since the motor structure with a rotation detector according to the present invention is configured as described above, the following effects can be obtained.
That is, since the resolver is provided on the bus bar between the bearings in the casing, the total length of the motor can be significantly shortened compared to the conventional case.
In addition, since the bus bar is formed of resin, no stress is generated when the resolver stator is attached, and adverse effects on the resolver can be prevented.
Further, since the motor input terminal and the resolver input / output terminal are provided on the bus bar, the input / output connection of the signal system of the motor and the resolver is facilitated, and the motor can be easily assembled.

本発明は、モータのステータの端面に設けられケーシング内に位置するバスバーにレゾルバを設けることにより、モータ全長の短縮化、発生応力の低減、信号系の端子の取付位置の集中化による信頼性等の向上を得るようにした回転検出器付モータ構造を提供することを目的とする。   The present invention provides a resolver on a bus bar provided in an end face of a stator of a motor and located in a casing, thereby shortening the overall length of the motor, reducing generated stress, and reliability by concentrating the mounting positions of signal system terminals, etc. An object of the present invention is to provide a motor structure with a rotation detector capable of improving the above.

以下、図面と共に本発明による回転検出器付モータ構造の好適な実施の形態について説明する。
尚、従来例と同一又は同等部分には、同一符号を用いて説明する。
図1において符号1で示されるものはケーシングであり、このケーシング1の内壁1aにはステータコイル2を有するステータ3が設けられている。
DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of a motor structure with a rotation detector according to the present invention will be described with reference to the drawings.
In addition, the same code | symbol is demonstrated to the part which is the same as that of a prior art example, or an equivalent part.
A reference numeral 1 in FIG. 1 is a casing, and an inner wall 1 a of the casing 1 is provided with a stator 3 having a stator coil 2.

前記ケーシング1の前蓋部1bと後蓋部1cに設けられた一対の軸受4、5間にはロータ6を有する回転軸7が回転自在に設けられ、前記ステータ3とロータ6とによりモータ8を構成している。   A rotary shaft 7 having a rotor 6 is rotatably provided between a pair of bearings 4 and 5 provided on the front lid portion 1 b and the rear lid portion 1 c of the casing 1, and a motor 8 is provided by the stator 3 and the rotor 6. Is configured.

前記ステータ3の端面3aに設けられ全体形状が輪状をなすと共に樹脂よりなるバスバー9には、組立時に前記ロータ6を案内するための中心開口10が形成されていると共に、その面部11には前記モータ8に対する信号を入力するためのモータ入力端子12が設けられている。尚、前記樹脂は、ナイロン、PBT、PPS、液晶ポリマー、ウレタン、エポキシ系が好適である。   A bus bar 9 formed on the end surface 3a of the stator 3 and having a ring shape as a whole and made of resin is formed with a central opening 10 for guiding the rotor 6 at the time of assembly. A motor input terminal 12 for inputting a signal to the motor 8 is provided. The resin is preferably nylon, PBT, PPS, liquid crystal polymer, urethane, or epoxy.

前記バスバー9の中心開口10の内縁部9aには、内方へ向けて半径方向に沿って延設された複数の突起部20が形成され、この各突起部20の内側の先端は断面形状で先鋭状にとがって曲折しやすく形成されている。   A plurality of protrusions 20 extending radially inward are formed on the inner edge portion 9a of the central opening 10 of the bus bar 9, and the inner tip of each protrusion 20 has a cross-sectional shape. It is formed in a sharp shape that is easy to bend.

前記中心開口10の開口内面21には、レゾルバステータコイル14を有する輪状のレゾルバステータ15が嵌め込み式に設けられ、前記突起部20に当接していると共に、前記突起部20を熱溶解により形成した溶解固定部22が前記レゾルバステータ15に溶着することによりレゾルバステータ15がバスバー9に強固に固定される。
尚、前記溶解固定部22の溶解の手法は、前述の熱に限らず、振動、超音波、薬品、レーザ、電磁波等を用いることができる。
A ring-shaped resolver stator 15 having a resolver stator coil 14 is provided on the inner surface 21 of the central opening 10 so as to be fitted therein. The ring-shaped resolver stator 15 is in contact with the protrusion 20 and is formed by heat melting. The melting and fixing portion 22 is welded to the resolver stator 15, whereby the resolver stator 15 is firmly fixed to the bus bar 9.
In addition, the melt | dissolution method of the said melt | dissolution fixing | fixed part 22 is not restricted to the above-mentioned heat, A vibration, an ultrasonic wave, a chemical | medical agent, a laser, electromagnetic waves, etc. can be used.

従って、前述のレゾルバステータ15及びレゾルバロータ16により、レゾルバ17を形成し、前記レゾルバステータコイル14からの端線は、前記バスバー9上に設けられレゾルバ17に対する信号の入出力を行うためのレゾルバ入出力端子23に接続されている。
尚、前記レゾルバステータ15は、開口内面21に接着剤を塗布しておき、バスバー9に固定させることも可能である。
Therefore, the resolver 17 is formed by the resolver stator 15 and the resolver rotor 16 described above, and an end line from the resolver stator coil 14 is provided on the bus bar 9 and is input to the resolver for inputting and outputting signals to the resolver 17. The output terminal 23 is connected.
The resolver stator 15 can be fixed to the bus bar 9 by applying an adhesive to the inner surface 21 of the opening.

本発明は、レゾルバの固定に限らず、光学式又は磁気式のエンコーダの固定に適用可能である。   The present invention is not limited to fixing a resolver, but can be applied to fixing an optical or magnetic encoder.

本発明による回転検出器付モータ構造を示す断面図である。It is sectional drawing which shows the motor structure with a rotation detector by this invention. 図1のバスバーとレゾルバの平面図である。It is a top view of the bus bar and resolver of FIG. 図2の断面図である。FIG. 3 is a cross-sectional view of FIG. 2. 従来構成を示す断面図である。It is sectional drawing which shows a conventional structure.

符号の説明Explanation of symbols

1 ケーシング
1a 内壁
1b 前蓋部
1c 後蓋部
2 ステータコイル
3 ステータ
4、5 軸受
6 ロータ
7 回転軸
8 モータ
9 バスバー
10 中心開口
12 モータ入力端子
14 レゾルバステータコイル
15 レゾルバステータ
16 レゾルバロータ
17 レゾルバ
20 突起部
21 開口内面
22 溶解固定部
DESCRIPTION OF SYMBOLS 1 Casing 1a Inner wall 1b Front cover part 1c Rear cover part 2 Stator coil 3 Stator 4, 5 Bearing 6 Rotor 7 Rotating shaft 8 Motor 9 Bus bar 10 Center opening 12 Motor input terminal 14 Resolver stator coil 15 Resolver stator 16 Resolver rotor 17 Resolver 20 Protrusion 21 Opening inner surface 22 Dissolving fixing part

Claims (5)

ケーシング(1)に設けられたステータ(3)と、前記ケーシング(1)に設けられた軸受(4,5)に回転自在に設けられロータ(6)を有する回転軸(7)と、前記ステータ(3)の端面(3a)に設けられ輪状をなすと共に前記ステータ(3)のステータコイル(2)を覆うように形成されたバスバー(9)と、前記バスバー(9)の中心開口(10)の開口内面(21)に設けられレゾルバステータコイル(14)を有するレゾルバステータ(15)と、前記回転軸(7)に設けられたレゾルバロータ(16)とを備え、
前記レゾルバステータ(15)とレゾルバロータ(16)によりレゾルバ(17)を形成し、前記レゾルバ(17)及びバスバー(9)は前記ケーシング(1)の内側に位置していることを特徴とする回転検出器付モータ構造。
A stator (3) provided in the casing (1), a rotary shaft (7) having a rotor (6) rotatably provided on bearings (4, 5) provided in the casing (1), and the stator A bus bar (9) provided on the end surface (3a) of (3) to form a ring and to cover the stator coil (2) of the stator (3), and a central opening (10) of the bus bar (9) A resolver stator (15) provided on the inner surface (21) of the opening and having a resolver stator coil (14), and a resolver rotor (16) provided on the rotating shaft (7),
The resolver stator (15) and the resolver rotor (16) form a resolver (17), and the resolver (17) and the bus bar (9) are located inside the casing (1). Motor structure with detector.
前記バスバー(9)は樹脂よりなり、前記バスバー(9)に形成され熱溶解による溶解固定部(22)によって前記レゾルバステータ(15)が固定されていることを特徴とする請求項1記載の回転検出器付モータ構造。   The rotation according to claim 1, wherein the bus bar (9) is made of resin, and the resolver stator (15) is fixed by a melting fixing part (22) formed by heat melting formed on the bus bar (9). Motor structure with detector. 前記中心開口(10)には、内側に向けて延設された複数の突起部(20)が形成され、前記溶解固定部(22)は前記突起部(20)に形成されていることを特徴とする請求項2記載の回転検出器付モータ構造。   The central opening (10) is formed with a plurality of projecting portions (20) extending inward, and the dissolution fixing portion (22) is formed on the projecting portion (20). The motor structure with a rotation detector according to claim 2. 前記バスバー(9)の周縁には、前記ステータコイル(2)に接続されたモータ入力端子(12)が設けられ、前記レゾルバステータコイル(14)に接続されたレゾルバ入出力端子(23)が前記バスバー(9)に設けられていることを特徴とする請求項1ないし3の何れかに記載の回転検出器付モータ構造。   A motor input terminal (12) connected to the stator coil (2) is provided at a peripheral edge of the bus bar (9), and a resolver input / output terminal (23) connected to the resolver stator coil (14) The motor structure with a rotation detector according to any one of claims 1 to 3, wherein the motor structure is provided on the bus bar (9). 前記軸受(4,5)は一対よりなり、前記レゾルバ(17)は前記各軸受(4,5)間に位置していることを特徴とする請求項1ないし4の何れかに記載の回転検出器付モータ構造。   The rotation detection according to any one of claims 1 to 4, wherein the bearings (4, 5) comprise a pair, and the resolver (17) is located between the bearings (4, 5). Motor structure with instrument.
JP2005311160A 2005-10-26 2005-10-26 Motor structure with rotation detector Active JP4701341B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010029000A (en) * 2008-07-22 2010-02-04 Showa Corp Rotating electrical machine
DE102009052014A1 (en) 2008-11-06 2010-07-22 AISAN KOGYO K.K., Obu-shi Motor structure with revolution detector
US8310228B2 (en) 2008-11-12 2012-11-13 Aisan Kogyo Kabushiki Kaisha Resolver
JP2013092400A (en) * 2011-10-24 2013-05-16 Toyota Motor Corp Mounting structure of resolver

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003274599A (en) * 2002-03-13 2003-09-26 Toyota Motor Corp Driving device
JP2004129362A (en) * 2002-10-01 2004-04-22 Mitsubishi Electric Corp Motor for electric power steering
JP2005138670A (en) * 2003-11-05 2005-06-02 Koyo Seiko Co Ltd Electric power steering device and assembling method of electric motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003274599A (en) * 2002-03-13 2003-09-26 Toyota Motor Corp Driving device
JP2004129362A (en) * 2002-10-01 2004-04-22 Mitsubishi Electric Corp Motor for electric power steering
JP2005138670A (en) * 2003-11-05 2005-06-02 Koyo Seiko Co Ltd Electric power steering device and assembling method of electric motor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010029000A (en) * 2008-07-22 2010-02-04 Showa Corp Rotating electrical machine
DE102009052014A1 (en) 2008-11-06 2010-07-22 AISAN KOGYO K.K., Obu-shi Motor structure with revolution detector
US8450893B2 (en) 2008-11-06 2013-05-28 Aisan Kogyo Kabushiki Kaisha Motor structure with planar coil type rotation detector
US8310228B2 (en) 2008-11-12 2012-11-13 Aisan Kogyo Kabushiki Kaisha Resolver
JP2013092400A (en) * 2011-10-24 2013-05-16 Toyota Motor Corp Mounting structure of resolver

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