JP2000175385A - Central-winding-system brushless dc motor - Google Patents

Central-winding-system brushless dc motor

Info

Publication number
JP2000175385A
JP2000175385A JP34572598A JP34572598A JP2000175385A JP 2000175385 A JP2000175385 A JP 2000175385A JP 34572598 A JP34572598 A JP 34572598A JP 34572598 A JP34572598 A JP 34572598A JP 2000175385 A JP2000175385 A JP 2000175385A
Authority
JP
Japan
Prior art keywords
stator
gear tooth
motor
tooth part
stator core
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
Application number
JP34572598A
Other languages
Japanese (ja)
Inventor
Kazuhiko Arai
和彦 新井
Eiichi Murata
栄一 村田
Masaaki Takezawa
正昭 竹澤
Toshito Yanashima
俊人 簗島
Keishiro Igarashi
恵司郎 五十嵐
Shigemi Koiso
繁美 小礒
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP34572598A priority Critical patent/JP2000175385A/en
Publication of JP2000175385A publication Critical patent/JP2000175385A/en
Pending legal-status Critical Current

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  • Brushless Motors (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a central-winding-system brushless DC motor where the position of a caulking part is arranged at a location that does not affect the magnetic path of a stator core as much as possible. SOLUTION: In a brushless DC motor, a stator gear tooth part 12 has a specific gear width X, and a gear tooth part tip part 13 is formed at an inner- diameter side gear tooth part up to an opening part excluding the gear tooth part while being extended to both the sides of the gear tooth part 12. A drive coil is directly wound around the gear tooth part 12 by utilizing the space of a slot 3 and hence the magnetic pole of a stator 1 is formed by the central direct-winding system. The position of the caulking part 4 that is clamped by laminating a stator core is arranged in a range on the extension line in the direction of outer diameter of a width wise dimension X of the gear tooth part 12 of the stator core 11 corresponding to a portion that less affects the passage of magnetic flux. A width Y of the caulking part 4 is set to the range of the width wise dimension X of the gear tooth part 12.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はモータのステータコ
アを積層締結するカシメ部の配置に特徴を有し、密閉型
圧縮機の駆動用モータに用いるに適した集中巻方式のブ
ラシレスDCモータに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concentrated winding type brushless DC motor which is characterized by an arrangement of a caulking portion for laminating and fastening stator cores of a motor and is suitable for use as a drive motor of a hermetic compressor.

【0002】[0002]

【従来の技術】最近、エアコン等の空調機器の普及に伴
って、形状的には小型化が、省電力のためにはエネルギ
ー効率のアップが求められており、特に空調機器の密閉
型圧縮機に用いられる駆動用モータは小型化と高効率化
が望まれている。
2. Description of the Related Art Recently, with the spread of air conditioners such as air conditioners, it has been required to reduce the size in terms of shape, but to increase energy efficiency in order to save power. It is desired that the driving motor used in the vehicle be reduced in size and increased in efficiency.

【0003】従来、一般に密閉型圧縮機の駆動用モータ
には分布巻方式のブラシレスDCモータが用いられてい
るが、本出願人は製造工程の簡素化と小型化及び効率ア
ップのために集中巻方式のブラシレスDCモータを提案
した。
Conventionally, a brushless DC motor of a distributed winding type is generally used as a drive motor for a hermetic compressor. However, the applicant of the present invention has concentrated winding to simplify the manufacturing process, reduce the size and increase the efficiency. A brushless DC motor of the type was proposed.

【0004】集中巻方式のブラシレスDCモータは図2
に示すようにステータ1とロータ2により構成されてい
て、ステータは図2(A)のような形状であり、ステー
タ板(珪素鋼板)を積層してステータコア11を形成し
ている。ステータコア11は歯部12が設けられ、歯部
12は所定の歯幅を有しその両脇には歯部先端部13が
設けられている。この歯部12にスロット部の空間を利
用して駆動コイル(図示せず)を直接巻回し、所謂、集
中直巻方式によってステータ1の磁極を形成する。この
例では4極6スロットのステータを示している。
A concentrated winding type brushless DC motor is shown in FIG.
As shown in FIG. 2, the stator is constituted by a stator 1 and a rotor 2, and the stator has a shape as shown in FIG. 2A, and a stator core 11 is formed by laminating stator plates (silicon steel plates). The stator core 11 is provided with a tooth portion 12, and the tooth portion 12 has a predetermined tooth width, and tooth tip portions 13 are provided on both sides thereof. A drive coil (not shown) is directly wound around the tooth portion 12 using the space of the slot portion, and a magnetic pole of the stator 1 is formed by a so-called concentrated series winding method. In this example, a stator having four poles and six slots is shown.

【0005】このことにより、分布巻方式のブラシレス
DCモータのステータに比して小型に形成することがで
きる。そしてステータコア1の形状は図1の平面図のよ
うになり、歯部12の両脇に歯部先端部13が形成され
る。
[0005] This makes it possible to reduce the size of the stator of the brushless DC motor of the distributed winding type. The shape of the stator core 1 is as shown in the plan view of FIG. 1, and tooth tip portions 13 are formed on both sides of the tooth portion 12.

【0006】また、ロータ2は図2(B)のような形状
であり、珪素鋼板を積層してロータコア21を形成して
いる。ロータコア21には磁石22が埋め込まれてい
る。ロータ2の磁石22としては通常のフェライト系の
磁石でもよいが、モータの小型化のためにはBH積の大
きい磁石、即ち、ネオジューム、鉄、ボロンからなるネ
オジ磁石、またサマリウムコバルト系磁石などの、所
謂、希土類磁石等を用いることができる。
The rotor 2 has a shape as shown in FIG. 2B, and a rotor core 21 is formed by laminating silicon steel plates. A magnet 22 is embedded in the rotor core 21. As the magnet 22 of the rotor 2, an ordinary ferrite magnet may be used. However, to reduce the size of the motor, a magnet having a large BH product, that is, a neodymium magnet made of neodymium, iron, or boron, or a samarium-cobalt magnet is used. That is, a so-called rare earth magnet or the like can be used.

【0007】このように形成されたステータ1の中心に
ロータ2を挿入して集中巻方式のブラシレスDCモータ
を構成する。かかる集中巻方式のブラシレスDCモータ
のステータコアを積層して締結する際に、通常はカシメ
によって行なっているが、ステータコアは磁気回路を構
成し磁束の通路であるため、カシメ部の位置は可能な限
り磁路に影響を与えない場所に選ぶ必要がある。
[0007] A rotor 2 is inserted into the center of the stator 1 thus formed to constitute a concentrated winding type brushless DC motor. When stacking and fastening the stator core of such a concentrated winding type brushless DC motor, it is usually performed by caulking, but since the stator core constitutes a magnetic circuit and is a path of magnetic flux, the position of the caulked portion is as small as possible. It is necessary to select a place that does not affect the magnetic path.

【0008】[0008]

【発明が解決しようとする課題】そこで、本発明はモー
タのステータコアの磁路に可能な限り影響を与えない場
所にカシメ部の位置を配置し、ステータコアを積層して
締結する集中巻方式のブラシレスDCモータを提供する
ことを目的とする。
SUMMARY OF THE INVENTION Accordingly, the present invention provides a concentrated winding type brushless in which the position of a caulking portion is arranged at a location where the magnetic path of a stator core of a motor is not affected as much as possible, and the stator cores are stacked and fastened. An object is to provide a DC motor.

【0009】[0009]

【課題を解決するための手段】この発明の請求項1に係
る集中巻方式のブラシレスDCモータは、ステータ歯部
幅寸法Xの外径方向の延長上の範囲に配置されたカシメ
部によってステータコアを積層締結するような構成とし
た。
According to a first aspect of the present invention, there is provided a brushless DC motor of a concentrated winding type, wherein a stator core is formed by a caulking portion disposed in an outer radial extension of a stator tooth width X. It was configured to be stacked and fastened.

【0010】これにより、ブラシレスDCモータのステ
ータを小型に形成することができる。また、集中巻方式
のモータのステータコアのステータ歯部中央の外周側
に、磁気回路に影響を与えずに、カシメ部の位置を配置
することができ、モータの信頼性の向上を図ることがで
きる。
Thus, the stator of the brushless DC motor can be made small. In addition, the position of the swaging portion can be arranged on the outer peripheral side of the center of the stator teeth of the stator core of the concentrated winding type motor without affecting the magnetic circuit, and the reliability of the motor can be improved. .

【0011】[0011]

【発明の実施の形態】そこで、上記問題を解決した本発
明の集中巻方式のブラシレスDCモータを、図面を参照
して説明する。図3、図4はステータとロータの磁束分
布の状態図である。図3のように、ステータコアの歯部
12に対してロータの磁石22、22が位置する場合
は、磁石の中間であるため磁気が弱い状態である。その
時の磁路に注目すると、14で示される位置は磁束の通
路に影響の少ない所である。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a concentrated winding type brushless DC motor according to the present invention which solves the above-mentioned problems. 3 and 4 are state diagrams of the magnetic flux distribution of the stator and the rotor. As shown in FIG. 3, when the magnets 22 of the rotor are positioned with respect to the tooth portions 12 of the stator core, the magnets are in the middle of the magnets and are in a weak state. Paying attention to the magnetic path at that time, the position indicated by 14 has little influence on the magnetic flux path.

【0012】また、図4のように、ステータコアの歯部
12に対してロータの磁石22が位置する場合は、磁石
が完全に対面するため磁気がもっとも強い状態である。
その時の磁路に注目すると、14で示される位置は磁束
の通路と全く関係なく影響のない所である。
When the magnet 22 of the rotor is positioned with respect to the teeth 12 of the stator core as shown in FIG. 4, the magnet is in a state where the magnetism is strongest because the magnet is completely opposed.
Paying attention to the magnetic path at that time, the position indicated by 14 has no influence irrespective of the magnetic flux path.

【0013】従って、この14の位置は、磁路への影響
を最小にして、カシメ部の位置を配置するに最適な位置
といえる。そこで、本発明はこの現象を利用して、カシ
メ部の位置決めをしてステータコアを積層してカシメ加
工するものである。
Therefore, the fourteenth position can be said to be an optimum position for arranging the position of the caulking portion while minimizing the influence on the magnetic path. Therefore, the present invention utilizes this phenomenon to position the caulking portion, stack the stator cores, and perform caulking.

【0014】図1はステータコア11の平面図を示し、
ステータ歯部12は所定の歯幅Xを有し、歯部部分を除
く開口部までの内径側歯部に歯部12の両脇に延長して
歯部先端部13が形成されている。この歯部12にスロ
ット3の空間を利用して駆動コイル(図示せず)を直接
巻回し、所謂、集中直巻方式によってステータ1の磁極
を形成する。
FIG. 1 shows a plan view of the stator core 11,
The stator tooth portion 12 has a predetermined tooth width X, and a tooth tip portion 13 is formed on the inner diameter side tooth portion extending to both sides of the tooth portion 12 up to the opening except the tooth portion. A drive coil (not shown) is directly wound around the tooth portion 12 by utilizing the space of the slot 3, and the magnetic pole of the stator 1 is formed by a so-called concentrated series winding method.

【0015】ステータコアを積層して締結するカシメ部
4の位置は、図3、図4の位置14に相当する、ステー
タコア11の歯部12の幅寸法Xの外径方向の延長上の
範囲に配置する。カシメ部4の幅Yは歯部12の幅寸法
Xの範囲内に設定する。
The position of the caulking portion 4 for laminating and fastening the stator cores is located in the range of the width X of the tooth portion 12 of the stator core 11 extending in the outer diameter direction corresponding to the position 14 in FIGS. I do. The width Y of the caulking portion 4 is set within the range of the width dimension X of the tooth portion 12.

【0016】そして、このカシメ部4の位置で、ステー
タコアを積層締結して集中巻方式のブラシレスDCモー
タのステータコアを形成する。カシメ部4は歯部全部に
設ける必要はなく、適宜、任意の数のステータ歯部12
に設けることができる。
At the position of the caulking portion 4, the stator cores are laminated and fastened to form a stator core of a concentrated winding type brushless DC motor. The caulking portion 4 does not need to be provided on all of the teeth, and an arbitrary number of stator teeth 12
Can be provided.

【0017】[0017]

【発明の効果】以上のように、本発明は、ブラシレスD
Cモータのステータを小型に形成することができると共
に、集中巻方式のモータのステータコアの歯部幅寸法X
の外径方向の延長上の範囲にカシメ部を配置することに
より、磁気回路に影響を与えずに、ステータコアを積層
して締結することができ、モータの信頼性の向上を図る
ことができる。
As described above, the present invention provides a brushless D
The stator of the C motor can be formed in a small size, and the tooth width X of the stator core of the concentrated winding type motor can be reduced.
By arranging the caulked portion in the range of extension in the outer diameter direction, the stator cores can be stacked and fastened without affecting the magnetic circuit, and the reliability of the motor can be improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明のステータコアの平面図。FIG. 1 is a plan view of a stator core according to the present invention.

【図2】集中巻方式のブラシレスDCモータのステータ
とロータ。
FIG. 2 shows a concentrated winding type brushless DC motor stator and rotor.

【図3】ステータとロータの磁束分布の状態図。FIG. 3 is a state diagram of a magnetic flux distribution of a stator and a rotor.

【図4】ステータとロータの磁束分布の状態図。FIG. 4 is a state diagram of a magnetic flux distribution of a stator and a rotor.

【符号の説明】[Explanation of symbols]

1 ステータ 11 ステータコア 12 歯部 13 歯部先端部 14 磁気的に影響の少ない場所 2 ロータ 21 ロータコア 22 磁石 3 スロット 4 カシメ部 DESCRIPTION OF SYMBOLS 1 Stator 11 Stator core 12 Tooth part 13 Tooth tip part 14 Location with little magnetic influence 2 Rotor 21 Rotor core 22 Magnet 3 Slot 4 Caulking part

───────────────────────────────────────────────────── フロントページの続き (72)発明者 竹澤 正昭 大阪府守口市京阪本通2丁目5番5号 三 洋電機株式会社内 (72)発明者 簗島 俊人 大阪府守口市京阪本通2丁目5番5号 三 洋電機株式会社内 (72)発明者 五十嵐 恵司郎 大阪府守口市京阪本通2丁目5番5号 三 洋電機株式会社内 (72)発明者 小礒 繁美 大阪府守口市京阪本通2丁目5番5号 三 洋電機株式会社内 Fターム(参考) 5H002 AA01 AA09 AB06 AC06 AC08 5H019 AA04 AA07 CC03 CC08 DD01 EE14  ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaaki Takezawa 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Toshito Yanashima 2 Keihanhondori, Moriguchi-shi, Osaka 5-5-5 Sanyo Electric Co., Ltd. (72) Inventor Keishiro Igarashi 2-5-5 Keihan Hondori, Moriguchi-shi, Osaka Pref. Sanyo Electric Co., Ltd. (72) Inventor Shigemi Koiso, Moriguchi-shi, Osaka 2-5-5 Keihanhondori Sanyo Electric Co., Ltd. F-term (reference) 5H002 AA01 AA09 AB06 AC06 AC08 5H019 AA04 AA07 CC03 CC08 DD01 EE14

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 集中巻方式のモータのステータコアにお
いて、ステータ歯部幅寸法Xの外径方向の延長上の範囲
に配置されたカシメ部によってステータコアを積層締結
することを特徴とする集中巻方式のブラシレスDCモー
タ。
In a concentrated winding type stator core, the stator cores are stacked and fastened by a caulking portion arranged in an outer radial extension of a stator tooth width dimension X. Brushless DC motor.
JP34572598A 1998-12-04 1998-12-04 Central-winding-system brushless dc motor Pending JP2000175385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34572598A JP2000175385A (en) 1998-12-04 1998-12-04 Central-winding-system brushless dc motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34572598A JP2000175385A (en) 1998-12-04 1998-12-04 Central-winding-system brushless dc motor

Publications (1)

Publication Number Publication Date
JP2000175385A true JP2000175385A (en) 2000-06-23

Family

ID=18378553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34572598A Pending JP2000175385A (en) 1998-12-04 1998-12-04 Central-winding-system brushless dc motor

Country Status (1)

Country Link
JP (1) JP2000175385A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002044888A (en) * 2000-07-25 2002-02-08 Daikin Ind Ltd Motor and motor controller
WO2008099828A1 (en) * 2007-02-16 2008-08-21 Daikin Industries, Ltd. Motor
JP2008278695A (en) * 2007-05-02 2008-11-13 Nippon Steel Corp Stator for inner rotor motor
JP2009240120A (en) * 2008-03-28 2009-10-15 Daikin Ind Ltd Stator, motor and compressor
WO2010016583A1 (en) * 2008-08-07 2010-02-11 ダイキン工業株式会社 Stator, motor, and compressor
JP2013504286A (en) * 2009-09-04 2013-02-04 ワールプール・エシ・ア Stator blade for electric motor
JP2015002617A (en) * 2013-06-14 2015-01-05 本田技研工業株式会社 Stator core for rotary electric machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002044888A (en) * 2000-07-25 2002-02-08 Daikin Ind Ltd Motor and motor controller
WO2008099828A1 (en) * 2007-02-16 2008-08-21 Daikin Industries, Ltd. Motor
JP2008278695A (en) * 2007-05-02 2008-11-13 Nippon Steel Corp Stator for inner rotor motor
JP2009240120A (en) * 2008-03-28 2009-10-15 Daikin Ind Ltd Stator, motor and compressor
WO2010016583A1 (en) * 2008-08-07 2010-02-11 ダイキン工業株式会社 Stator, motor, and compressor
JP2010063351A (en) * 2008-08-07 2010-03-18 Daikin Ind Ltd Stator, motor and compressor
CN102113196A (en) * 2008-08-07 2011-06-29 大金工业株式会社 Stator, motor, and compressor
US8410655B2 (en) 2008-08-07 2013-04-02 Daikin Industries, Ltd. Stator, motor, and compressor
EP2312727A4 (en) * 2008-08-07 2016-11-09 Daikin Ind Ltd Stator, motor, and compressor
JP2013504286A (en) * 2009-09-04 2013-02-04 ワールプール・エシ・ア Stator blade for electric motor
JP2015002617A (en) * 2013-06-14 2015-01-05 本田技研工業株式会社 Stator core for rotary electric machine

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