JPH07264820A - Capacitor induction motor - Google Patents

Capacitor induction motor

Info

Publication number
JPH07264820A
JPH07264820A JP6049405A JP4940594A JPH07264820A JP H07264820 A JPH07264820 A JP H07264820A JP 6049405 A JP6049405 A JP 6049405A JP 4940594 A JP4940594 A JP 4940594A JP H07264820 A JPH07264820 A JP H07264820A
Authority
JP
Japan
Prior art keywords
rotor
magnet
induction motor
ring
capacitor induction
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
JP6049405A
Other languages
Japanese (ja)
Inventor
Yuji Kawai
Koji Mori
Hiroyuki Okudera
Yuji Soma
Takashi Suzuki
浩之 奥寺
幸司 森
裕司 河合
裕治 相馬
孝史 鈴木
Original Assignee
Fujitsu General Ltd
株式会社富士通ゼネラル
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 Fujitsu General Ltd, 株式会社富士通ゼネラル filed Critical Fujitsu General Ltd
Priority to JP6049405A priority Critical patent/JPH07264820A/en
Publication of JPH07264820A publication Critical patent/JPH07264820A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To increase the effective area of the end ring of the rotor of a capacitor induction motor and improve the characteristics by a method wherein the lengths of the lead wires of a magnetic detector which detects the revolution of the motor are reduced to mount the detector on a wiring board easily. CONSTITUTION:A rotor is supported by bearings 9 on both the sides of a stator 7 with a bracket 8 therebetween. The rotor is composed of a rotor core 5, a rotor shaft 6 and an end ring 4. The rotor is attached to the stator 7 which has a winding 11 and a resin-molded unit 10. A wiring board 3 is provided between the rotor and the bracket 8. A magnetic detector 2 is mounted on the board 3 and detecting magnets 1 are mounted on the rotor. In a capacitor induction motor as described above, the magnets 1 are fixed to the one side of the end ring 4 of the rotor in the circumferential direction. The detecting face of the magnetic detector is made to face the surfaces of the magnets so as to have the detecting face and the magnet surfaces in parallel with each other.

Description

【発明の詳細な説明】Detailed Description of the Invention
【0001】[0001]
【産業上の利用分野】本発明はコンデンサ誘導電動機に
係り、詳しくは回転速度検出器に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacitor induction motor, and more particularly to a rotation speed detector.
【0002】[0002]
【従来の技術】従来、コンデンサ誘導電動機の回転速度
検出器としては、磁気検出素子と検出用マグネットを組
み合わせて構成している。まず、前記マグネットは、図
3に示すようにアルミダイキャストにより製造された回
転子鉄心5に回転軸6を嵌合し、同回転軸に円筒型のマ
グネット1を軸端から挿入し接着して組立ていた。この
ような工程のためマグネットを必要としない電動機の回
転子とは別の工程となり、生産性が良くない欠点があっ
た。一方、磁気検出素子2、例えばホールICは、前記
マグネットの取付位置が回転軸の外周にあるため、同回
転軸と直角に固定子に取り付けられた基板3に搭載する
には、同ホールICのリード線を長くしてソケットで支
え、前記プリント基板面と垂直に固定し、前記回転軸上
のマグネットと平行にし、その磁力線を検出可能な位置
まで突出させる必要があった。更に、ホールICは回転
子のエンドリング4の内周と前記回転軸の外周に接着さ
れたマグネットとの中間に位置するため、前記エンドリ
ングの内径寸法が制限され同エンドリングの断面積を減
少させ、コンデンサ誘導電動機の性能を制限していた。
2. Description of the Related Art Conventionally, a rotational speed detector of a capacitor induction motor has been constructed by combining a magnetic detection element and a detection magnet. First, as for the magnet, as shown in FIG. 3, a rotary shaft 6 is fitted to a rotor core 5 manufactured by aluminum die casting, and a cylindrical magnet 1 is inserted into the rotary shaft from the shaft end and bonded. It was assembled. Due to such a process, the process is different from the rotor of the electric motor that does not require a magnet, and there is a drawback that productivity is not good. On the other hand, since the magnet mounting position of the magnetic detection element 2, for example, the Hall IC, is on the outer circumference of the rotating shaft, the Hall detecting IC must be mounted on the substrate 3 mounted on the stator at a right angle to the rotating shaft. It was necessary to lengthen the lead wire, support it with a socket, fix it perpendicularly to the printed circuit board surface, make it parallel to the magnet on the rotating shaft, and project the magnetic force line to a detectable position. Further, since the Hall IC is located between the inner circumference of the end ring 4 of the rotor and the magnet adhered to the outer circumference of the rotary shaft, the inner diameter of the end ring is limited and the cross-sectional area of the end ring is reduced. And limited the performance of the capacitor induction motor.
【0003】[0003]
【発明が解決しようとする課題】本発明は、上記従来の
問題点に鑑みなされたもので、固定子の両側にブラケッ
トを介して回転子を軸受により支承し、前記回転子とブ
ラケットの間に基板を備え、同基板に磁気検出素子と、
前記回転子に検出用マグネットを設けたコンデンサ誘導
電動機において、マグネットを必要としない電動機の回
転子と共通の製造工程とし、磁気検出素子、例えばホー
ルICのリード線を短くして基板に簡単に登載し、回転
子のエンドリングの有効断面積を増加させ特性を向上し
た電動機を提供することを目的としている。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the prior art. The rotor is supported by bearings on both sides of the stator via brackets, and the rotor is supported between the rotor and the brackets. A substrate, and a magnetic detection element on the substrate,
In a capacitor induction motor having a detection magnet on the rotor, the manufacturing process is the same as the rotor of a motor that does not require a magnet, and the lead wire of a magnetic detection element, for example, a Hall IC is shortened to easily mount it on a substrate. However, it is an object of the present invention to provide an electric motor having improved characteristics by increasing the effective sectional area of the end ring of the rotor.
【0004】[0004]
【課題を解決するための手段】上記目的を達成するため
に、固定子の両側にブラケットを介して回転子を軸受に
より支承し、前記回転子とブラケットの間に基板を備
え、同基板に磁気検出素子と、前記回転子に検出用マグ
ネットを設けたコンデンサ誘導電動機において、前記回
転子のエンドリングの一側に円周方向に沿って前記マグ
ネットを固着してなるようにし、前記磁気検出素子の検
出面を前記マグネットの表面とほぼ平行に配置し、コン
デンサ誘導電動機を構成するようにした。また、前記マ
グネットの形状を環状で円周方向に沿って複数対のN極
とS極を着磁してなるようにコンデンサ誘導電動機を構
成するようにした。更に、前記エンドリングの内周を回
転軸の外周と隣接する位置まで形成してなるようにコン
デンサ誘導電動機を構成するようにした。
In order to achieve the above object, a rotor is supported by bearings through brackets on both sides of a stator, and a substrate is provided between the rotor and the bracket. In a capacitor induction motor having a detection element and a detection magnet provided on the rotor, the magnet is fixed to one side of an end ring of the rotor along a circumferential direction, and the magnetic detection element The detection surface was arranged substantially parallel to the surface of the magnet to form a capacitor induction motor. Further, the capacitor induction motor is configured such that a plurality of pairs of N-poles and S-poles are magnetized along the circumferential direction in an annular shape of the magnet. Further, the capacitor induction motor is configured such that the inner circumference of the end ring is formed to a position adjacent to the outer circumference of the rotary shaft.
【0005】[0005]
【作用】上記の構成によれば、固定子の両側にブラケッ
トを介して回転子を軸受により支承し、前記回転子とブ
ラケットの間に基板を備え、同基板に磁気検出素子と、
前記回転子に検出用マグネットを設けたコンデンサ誘導
電動機において、前記回転子のエンドリングの一側に円
周方向に沿ってマグネットを固着してなるようにし、前
記磁気検出素子の磁気検出面を前記マグネットの表面と
ほぼ平行に配置し、コンデンサ誘導電動機を構成するよ
うにし、また、前記マグネットの形状を環状で円周方向
に沿って複数対のN極とS極を着磁してなるようにコン
デンサ誘導電動機を構成するようにし、更に、前記エン
ドリングの内周寸法を回転軸の外周と隣接する位置まで
形成してなるようにコンデンサ誘導電動機を構成するよ
うにしたので、磁気検出素子、例えばホールICのリー
ド線を短くして基板に簡単に搭載することができる。ま
た、従来磁気検出素子とマグネットの装着されていた空
間が利用できるため、前記エンドリングの内周寸法を拡
大し、有効断面積を増加させることができる。
According to the above construction, the rotor is supported by bearings on both sides of the stator through the brackets, the substrate is provided between the rotor and the bracket, and the magnetic detection element is provided on the substrate.
In a capacitor induction motor in which the rotor is provided with a magnet for detection, a magnet is fixed to one side of the end ring of the rotor along the circumferential direction, and the magnetic detection surface of the magnetic detection element is The magnets are arranged substantially parallel to the surface of the magnet to form a capacitor induction motor, and the magnet has a ring shape in which a plurality of pairs of N and S poles are magnetized along the circumferential direction. Since the capacitor induction motor is configured, and further, the capacitor induction motor is configured such that the inner peripheral dimension of the end ring is formed to a position adjacent to the outer periphery of the rotating shaft, the magnetic detection element, for example, The lead wire of the Hall IC can be shortened and easily mounted on the substrate. Further, since the space where the magnetic detection element and the magnet are conventionally mounted can be used, the inner peripheral dimension of the end ring can be enlarged and the effective sectional area can be increased.
【0006】[0006]
【実施例】本発明の実施例を添付図面を参照して詳細に
説明する。なお、従来例と同じ部分の符号は同一とす
る。図1は、本発明の一実施例による回転軸に沿ったコ
ンデンサ誘導電動機の断面図である。以下、図1により (1)電動機の全体構成 (2)本発明の特徴となるマグネットの取付 (3)本発明の特徴となる磁気検出素子取付 (4)本発明の特徴となるエンドリングの形状 について説明する。
Embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same parts as those in the conventional example have the same reference numerals. FIG. 1 is a cross-sectional view of a capacitor induction motor along a rotation axis according to an embodiment of the present invention. Hereinafter, referring to FIG. 1, (1) Overall configuration of the electric motor (2) Attachment of a magnet, which is a feature of the present invention (3) Attachment of a magnetic detection element, which is a feature of the present invention (4) Shape of an end ring, which is a feature of the present invention Will be described.
【0007】(1)電動機の全体構成 固定子鉄心の歯部に巻線11を巻装した後、樹脂モール
ドして固定子7を形成する。一方、回転子鉄心5にエン
ドリング4を取付け、回転軸6を嵌合して回転子を形成
する。次いで、固定子7の樹脂モールド部10の少なく
とも一側に前記回転子の回転軸を軸受9を用いてブラケ
ット8により支承し、回転子を固定子に組み込み、ブラ
ケットを樹脂モールド部に固定する。その後で、回転子
の角度位置の検出用マグネット1を前記回転子のエンド
リングの一側に固着する。また、磁気検出素子2を搭載
した基板3を固定子の側面に前記マグネットと対向して
装着し組み込む。最後に、他側を同様にブラケットで固
定しコンデンサ誘導電動機を構成する。
(1) Overall Structure of Electric Motor After the winding wire 11 is wound around the teeth of the stator core, the stator 7 is formed by resin molding. On the other hand, the end ring 4 is attached to the rotor core 5 and the rotary shaft 6 is fitted to form the rotor. Next, the rotary shaft of the rotor is supported by the bracket 8 using the bearing 9 on at least one side of the resin mold portion 10 of the stator 7, the rotor is incorporated into the stator, and the bracket is fixed to the resin mold portion. After that, the magnet 1 for detecting the angular position of the rotor is fixed to one side of the end ring of the rotor. Further, the substrate 3 on which the magnetic detection element 2 is mounted is mounted on the side surface of the stator so as to face the magnet and incorporated. Finally, the other side is similarly fixed with a bracket to form a capacitor induction motor.
【0008】(2)本発明の特徴となるマグネットの取
付 前記エンドリングの一側にマグネットを固着する場合
に、同マグネットの磁極、N極とS極を回転子の円周方
向に沿って配置する。図1においては、紙面に対して垂
直方向に磁極があるように前記マグネットを固着する。
また、前記マグネットの形状を環状で円周方向に沿って
複数対のN極とS極を着磁してなるようにし、前記エン
ドリングの一側に固着するようにしてもよい。図2は、
2対のN極とS極を前記の環状マグネットに着磁した例
を示す。
(2) Attachment of Magnet Characteristic of the Present Invention When a magnet is fixed to one side of the end ring, the magnetic poles of the magnet, N pole and S pole are arranged along the circumferential direction of the rotor. To do. In FIG. 1, the magnet is fixed so that the magnetic pole exists in the direction perpendicular to the paper surface.
Further, the magnet may be formed in an annular shape by magnetizing a plurality of pairs of N poles and S poles along the circumferential direction, and may be fixed to one side of the end ring. Figure 2
An example in which two pairs of N poles and S poles are magnetized to the annular magnet will be shown.
【0009】(3)本発明の特徴となる磁気検出素子取
付 前記磁気検出素子として、例えばホールICの磁気検出
面を前記マグネットの表面とほぼ平行に対向して配置
し、その磁力線を検出可能とする。 (4)本発明の特徴となるエンドリングの形状 前記エンドリングの内周を回転軸の外周とほぼ隣接する
位置まで形成する。
(3) Attachment of magnetic detection element which is a feature of the present invention As the magnetic detection element, for example, the magnetic detection surface of a Hall IC is arranged so as to face the surface of the magnet substantially in parallel, and the magnetic force line can be detected. To do. (4) Shape of End Ring Characterizing the Present Invention The inner circumference of the end ring is formed to a position almost adjacent to the outer circumference of the rotary shaft.
【0010】[0010]
【発明の効果】以上のように本発明においては、固定子
の両側にブラケットを介して回転子を軸受により支承
し、前記回転子とブラケットの間に基板を備え、同基板
に磁気検出素子と、前記回転子に検出用マグネットを設
けたコンデンサ誘導電動機において、前記回転子のエン
ドリングの一側に円周方向に沿ってマグネットを固着し
てなるようにし、前記磁気検出素子の磁気検出面を前記
マグネットの表面とほぼ平行に配置し、コンデンサ誘導
電動機を構成するようにし、また、前記マグネットの形
状を環状で円周方向に沿って複数対のN極とS極を着磁
してなるようにコンデンサ誘導電動機を構成するように
し、更に、前記エンドリングの内周寸法を回転軸の外周
と隣接する位置まで形成してなるようにコンデンサ誘導
電動機を構成するようにしたので、磁気検出素子、例え
ばホールICのリード線を短くして基板に簡単に搭載す
ることができる。この結果、スペーサとしてのソケット
が不要となり、作業性が向上し工数及び材料費を節減で
きる。また、従来磁気検出素子とマグネットの装着され
ていた空間が利用できるため、前記エンドリングの内周
寸法を拡大し、有効断面積を増加させることができ、そ
の結果電動機の特性を向上できる。更に、マグネットを
必要としない他の電動機と製造工程を共通化することが
できる。
As described above, in the present invention, the rotor is supported by the bearings through the brackets on both sides of the stator, and the substrate is provided between the rotor and the bracket. In a capacitor induction motor in which the rotor is provided with a detection magnet, a magnet is fixed to one side of the end ring of the rotor along the circumferential direction, and the magnetic detection surface of the magnetic detection element is The magnet is arranged substantially in parallel with the surface of the magnet to form a capacitor induction motor, and the magnet has a ring shape in which a plurality of pairs of N and S poles are magnetized along the circumferential direction. A capacitor induction motor, and the capacitor induction motor is formed such that the inner peripheral dimension of the end ring is formed to a position adjacent to the outer circumference of the rotating shaft. Since, it is possible to easily mounted on the board to shorten the magnetic detecting element, for example, leads of the Hall IC. As a result, a socket as a spacer is not required, workability is improved, and man-hours and material costs can be saved. Further, since the space where the magnetic detection element and the magnet are conventionally mounted can be used, the inner peripheral dimension of the end ring can be enlarged and the effective sectional area can be increased, and as a result, the characteristics of the electric motor can be improved. Furthermore, the manufacturing process can be shared with other electric motors that do not require magnets.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明の一実施例としてマグネットと磁気検出
素子の取付位置を示す回転軸に沿ったコンデンサ誘導電
動機の断面図である。
FIG. 1 is a cross-sectional view of a capacitor induction motor taken along an axis of rotation showing attachment positions of a magnet and a magnetic detection element as one embodiment of the present invention.
【図2】本発明のマグネットの形状を環状とし、着磁状
態を示す他の実施例の説明図である。
FIG. 2 is an explanatory view of another embodiment showing a magnetized state in which the magnet of the present invention has a ring shape.
【図3】従来のマグネットと磁気検出素子の取付位置を
示す回転軸に沿ったコンデンサ誘導電動機の断面図であ
る。
FIG. 3 is a cross-sectional view of a conventional capacitor induction motor along a rotation axis, showing mounting positions of a magnet and a magnetic detection element.
【符号の説明】[Explanation of symbols]
1 マグネット 2 磁気検出素子 3 基板 4 エンドリング 5 回転子鉄心 6 回転軸 7 固定子 8 ブラケット 9 軸受 10 モールド樹脂部 11 巻線 1 Magnet 2 Magnetic Detection Element 3 Substrate 4 End Ring 5 Rotor Iron Core 6 Rotation Shaft 7 Stator 8 Bracket 9 Bearing 10 Mold Resin Part 11 Winding
───────────────────────────────────────────────────── フロントページの続き (72)発明者 森 幸司 川崎市高津区末長1116番地 株式会社富士 通ゼネラル内 (72)発明者 相馬 裕治 川崎市高津区末長1116番地 株式会社富士 通ゼネラル内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Mori 1116 Suenaga, Takatsu-ku, Kawasaki City, Fujitsu General Ltd. (72) Inventor Yuji Soma 1116, Suenaga, Takatsu-ku, Kawasaki City

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 固定子の両側にブラケットを介して回転
    子を軸受により支承し、前記回転子とブラケットの間に
    基板を備え、同基板に磁気検出素子と、前記回転子に検
    出用マグネットを設けたコンデンサ誘導電動機におい
    て、 前記回転子のエンドリングの一側に円周方向に沿って前
    記マグネットを固着する一方、前記磁気検出素子の検出
    面を前記マグネットの表面とほぼ平行に対向して配置し
    たことを特徴とするコンデンサ誘導電動機。
    1. A rotor is supported by bearings on both sides of a stator via brackets, and a substrate is provided between the rotor and the bracket. A magnetic detection element is provided on the substrate and a detection magnet is provided on the rotor. In the provided capacitor induction motor, the magnet is fixed to one side of the end ring of the rotor along the circumferential direction, and the detection surface of the magnetic detection element is arranged so as to face substantially parallel to the surface of the magnet. A capacitor induction motor characterized in that
  2. 【請求項2】 前記マグネットの形状を環状とし、円周
    方向に沿って複数対のN極とS極を着磁してなることを
    特徴とする請求項1のコンデンサ誘導電動機。
    2. The capacitor induction motor according to claim 1, wherein the magnet has a ring shape, and a plurality of pairs of N poles and S poles are magnetized along the circumferential direction.
  3. 【請求項3】 前記エンドリングの内周を回転軸の外周
    と隣接する位置まで形成してなることを特徴とする請求
    項1のコンデンサ誘導電動機。
    3. The capacitor induction motor according to claim 1, wherein the inner circumference of the end ring is formed up to a position adjacent to the outer circumference of the rotary shaft.
JP6049405A 1994-03-18 1994-03-18 Capacitor induction motor Pending JPH07264820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6049405A JPH07264820A (en) 1994-03-18 1994-03-18 Capacitor induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6049405A JPH07264820A (en) 1994-03-18 1994-03-18 Capacitor induction motor

Publications (1)

Publication Number Publication Date
JPH07264820A true JPH07264820A (en) 1995-10-13

Family

ID=12830144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6049405A Pending JPH07264820A (en) 1994-03-18 1994-03-18 Capacitor induction motor

Country Status (1)

Country Link
JP (1) JPH07264820A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1003270A1 (en) * 1998-11-19 2000-05-24 Moriyama Kogyo Kabushiki Kaisha Magnetic pole position detector and annular sheet with sheet-like magnets for a brushless DC motor
KR20010010536A (en) * 1999-07-21 2001-02-15 배길성 Switched Reluctance Motor Unifying Sensor Magnet and Rotor
US6680553B1 (en) 1998-11-19 2004-01-20 Kabushiki Kaisha Moric Rotating electrical apparatus
JP2010011637A (en) * 2008-06-27 2010-01-14 Hitachi Ltd Permanent magnet rotary electric machine and elevator winding machine using the same
JP2013106379A (en) * 2011-11-10 2013-05-30 Denso Corp Electric motor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1003270A1 (en) * 1998-11-19 2000-05-24 Moriyama Kogyo Kabushiki Kaisha Magnetic pole position detector and annular sheet with sheet-like magnets for a brushless DC motor
US6680553B1 (en) 1998-11-19 2004-01-20 Kabushiki Kaisha Moric Rotating electrical apparatus
KR20010010536A (en) * 1999-07-21 2001-02-15 배길성 Switched Reluctance Motor Unifying Sensor Magnet and Rotor
JP2010011637A (en) * 2008-06-27 2010-01-14 Hitachi Ltd Permanent magnet rotary electric machine and elevator winding machine using the same
JP2013106379A (en) * 2011-11-10 2013-05-30 Denso Corp Electric motor
US8987954B2 (en) 2011-11-10 2015-03-24 Denso Corporation On-vehicle motor including detector for detecting state of motor

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