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JP2004040984A - Motor rotor - Google Patents

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Publication number
JP2004040984A
JP2004040984A JP2002198710A JP2002198710A JP2004040984A JP 2004040984 A JP2004040984 A JP 2004040984A JP 2002198710 A JP2002198710 A JP 2002198710A JP 2002198710 A JP2002198710 A JP 2002198710A JP 2004040984 A JP2004040984 A JP 2004040984A
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Prior art keywords
shaft support
rotor
motor rotor
frame
electromagnetic steel
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Inventor
Masami Hattori
服部 正巳
Takeshi Shiga
志賀 剛
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Toshiba Corp
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Toshiba Corp
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Priority to JP2002198710A priority Critical patent/JP2004040984A/en
Priority to TW092106978A priority patent/TWI226144B/en
Priority to KR10-2003-0019112A priority patent/KR100530413B1/en
Priority to CNB031083994A priority patent/CN1253987C/en
Publication of JP2004040984A publication Critical patent/JP2004040984A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/008Control or steering systems not provided for elsewhere in subclass C02F
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • C02F1/4618Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • B01D39/14Other self-supporting filtering material ; Other filtering material
    • B01D39/20Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055Carbonaceous material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14Ultrafiltration; Microfiltration
    • B01D61/145Ultrafiltration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D63/00Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02Hollow fibre modules
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08Hollow fibre membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/48Treatment of water, waste water, or sewage with magnetic or electric fields
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104Devices therefor; Their operating or servicing
    • C02F1/4618Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
    • C02F2001/4619Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water only cathodic or alkaline water, e.g. for reducing

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

【課題】高い寸法精度を確保し易く且つ加工性に優れた軸支持体を有するモータの回転子を提供する。
【解決手段】回転子を、電磁鋼板からなるフレーム、フレームの環状壁の内周面に沿うように配置されたロータマグネット、前記フレームの中心部の孔部に配置された軸支持体11から構成する。前記軸支持体11は、電磁鋼板を積層することにより構成されている。各電磁鋼板は、かしめにより相互に接合されている。
【選択図】 図1
An object of the present invention is to provide a rotor for a motor having a shaft support that easily ensures high dimensional accuracy and has excellent workability.
A rotor comprises a frame made of an electromagnetic steel plate, a rotor magnet arranged along the inner peripheral surface of an annular wall of the frame, and a shaft support 11 arranged in a hole at the center of the frame. I do. The shaft support 11 is formed by laminating electromagnetic steel sheets. Each electromagnetic steel sheet is joined to each other by caulking.
[Selection diagram] Fig. 1

Description

【0001】
【発明の属する技術分野】
本発明は、回転子鉄心とは別体に構成された回転軸を支持するための軸支持体を有するモータの回転子に関する。
【0002】
【発明が解決しようとする課題】
例えば外転形の永久磁石モータの回転子には、特許第3017953号公報に示されたものがある。即ち、図3及び図4に示すように、回転子1は、円板状の主板部2及び前記主板部2の外周縁部に設けられた環状壁3からなる磁性体製のフレーム4、前記環状壁3の内周面に沿って環状配置された多数個のロータマグネット5、前記ロータマグネット5の磁路を確保するために前記環状壁3の外周部に配置された磁性体製のリング部材6、前記主板部2の中心部に配置された軸支持体7を有して構成されている。
【0003】
前記フレーム4は、磁性体である鉄板をプレス加工することにより形成されており、ロータマグネット5、リング部材6、軸支持体7と共に樹脂8により一体化されている。
【0004】
前記軸支持体7は軸方向に延びる嵌合孔9を有している。前記嵌合孔9には、図示しない回転軸が嵌入されるようになっており、その内周面には軸方向に延びる多数の歯からなるセレーション10が形成されている。以上により、回転軸は嵌合孔9に対して回り止め状態で嵌合されるようになっている。
【0005】
このように前記軸支持体7は回転軸を支持する部品であることから、回転子1の回転精度の向上を図るために、その嵌合孔9や外周形状等に高い寸法精度が要求される。この場合、前記軸支持体7を加工性に優れる樹脂成形品とすると、寸法精度が高いものを得ることができるが、機械的強度が弱いという欠点がある。
【0006】
そこで、従来の軸支持体7は、機械的強度が強い鍛造、特に冷間鍛造により構成されていた。しかし、冷間鍛造は目的のワーク形状を得るために繰り返しプレス加工を行う必要があり、また、金型自体の設計が難しい。更に、プレス成形後のワークは、その寸法精度を確保するために精密加工、熱処理(焼入れ)、研磨加工を行う必要がある。このため、加工性が悪く製造コストが高いという欠点があった。また、冷間鍛造品は精度確保、品質確保が難しいという欠点もある。
【0007】
本発明は上記事情に鑑みてなされたものであり、その目的は、高い寸法精度を確保し易く且つ加工性に優れた軸支持体を有するモータの回転子を提供することである。
【0008】
【課題を解決するための手段】
本発明の請求項1のモータの回転子は、回転子鉄心を有する回転体と、前記回転体の中心部に設けられた孔部に配置され回転軸を嵌合支持するための軸支持体とを有し、前記軸支持体を、多数の金属板を軸方向に積層することにより構成したところに特徴を有する。
【0009】
この場合、固定子の外周に配置された回転子鉄心及び前記回転子鉄心を支持するフレームとから前記回転体が構成され、前記フレームの中央部に設けられた孔部に前記軸支持体が配置されていることが好ましい。
【0010】
金属板の加工は、冷間鍛造に比べて工程が少なく、精度が良い。従って、上記構成によれば、加工性、寸法精度に優れた軸支持体を備えたモータの回転子を得ることができる。
【0011】
本発明の請求項3のモータの回転子は、積層された金属板をかしめにより相互に接合したところに特徴を有する。この場合、かしめによる接合は、積層された金属板の全てについて行うことが望ましい(請求項4の発明)。
【0012】
上記構成によれば、積層された金属板を容易に固定することができ、軸支持体の強度向上を図ることができる。
【0013】
また、回転軸のすべり性の向上、錆防止のために、軸支持体のうち少なくとも回転軸との接触面に表面処理を施すと良い(請求項5の発明)。
【0014】
金属板を電磁鋼板から構成することも良い構成である(請求項6の発明)。電磁鋼板は板厚偏差が小さいため、寸法精度を確保し易い。また、予め表面コーティングされているため、切断面以外の部分の表面処理を省略することができる。
【0015】
本発明の請求項7のモータの回転子は、軸支持体とフレームとを樹脂により一体成形したところに特徴を有する。上記構成によれば、軸支持体をフレームに対して確実に固定することができる。
【0016】
この場合、前記軸支持体の外周面に軸方向の段差を設けると良い(請求項8の発明)。上記構成によれば、軸支持体とフレームとの樹脂成形品から前記軸支持体が抜け出ることを防止できる。
【0017】
また、軸支持体とフレームとの樹脂成形品における前記軸支持体の回り止めのために、前記軸支持体に、軸方向と直交する断面形状が非円形となる部分を設けることも良い構成である(請求項9の発明)。
【0018】
【発明の実施の形態】
以下、本発明の一実施例を図1及び図2を参照しながら説明する。本実施例に係る回転子は、図3及び図4に示す従来の回転子のうち軸支持体の構成が異なるのみであり、その他の部分は同様の構成を有している。従って、ここでは、回転子のうち軸支持体の構成についてのみ説明し、その他の部分については説明を省略する。
【0019】
尚、図3及び図4に示す回転子1のうちフレーム4の環状壁3、リング部材6は本発明の回転子鉄心に相当する。また、フレーム4、ロータマグネット5、リング部材6は本発明の回転体に相当する。
【0020】
図1は軸支持体11の平面図、図2は図1中X−X線に沿う軸支持体11の縦断面図を示している。これら図1及び図2に示すように、軸支持体11は、外周形状が円形状の上部11a及び下部11bと、外周形状が非円形状、例えば十二角形状の中間部11cとから構成されている。
【0021】
前記軸支持体11の上部11a及び下部11bの外径寸法は略同じに設定されており、中間部11cの最小外径寸法は前記上部及び下部の外径寸法よりも大きく設定されている。このため、軸支持体11の外周のうち中間部11cと上部11a及び下部11bとの境界部分にはそれぞれ段差11d,11eが形成される。
【0022】
軸支持体11の内部には、軸方向に貫通する嵌合孔12が設けられている。前記嵌合孔12には図示しない回転軸が嵌入されるようになっている。前記嵌合孔12のうち軸支持体11の下部11b及び中間部11cの下部に位置する部分は径大に、その他の部分は径小に構成されており、その径小部分には軸方向に延びる多数の歯部13aから成るセレーション13が設けられている。
【0023】
前記軸支持体11は、多数の所定形状の金属板、例えば電磁鋼板を積層することにより構成されていると共に嵌合孔12の内面にアルミ蒸着処理を施すことにより構成されている。アルミ蒸着処理は、電磁鋼板の切断面となる嵌合孔12の内面の錆防止及びすべり性向上のために行われる。
【0024】
また、積層された全ての電磁鋼板はかしめにより相互に接合されている。本実施例においては、最下部に位置する電磁鋼板については凹部からなるかしめ部14が、その他の電磁鋼板については切起こしにより形成された凸部及び凹部からなるかしめ部14がそれぞれ4箇所ずつ設けられている。4個のかしめ部は放射状に均等配置されている。
【0025】
上述したように、前記軸支持体11は、フレーム4、ロータマグネット5、リング部材6と共に樹脂8により一体化されている(図3参照)。従って、軸支持体11の切断面でありアルミ蒸着処理が施されていない外周面は樹脂8の内部に埋設される。また、軸支持体11を樹脂8によりフレーム4と一体化したことにより、軸支持体11をフレーム4に確実に固定することができる。
【0026】
次に、軸支持体11の製造方法について簡単に説明する。最初に、軸支持体11の下部11bに対応する円環状の電磁鋼板を順送り型にて素材から打ち抜き、所定の型に位置セットする順送プレス加工を所定回数繰り返す(第1工程)。次に、中間部11cに対応する環状の電磁鋼板を順送り型にて素材から打ち抜き、第1工程にて積層された電磁鋼板の上にセットする順送プレス加工を所定回数繰り返す(第2工程)。続いて、上部11aの外周形状に対応する円形状の電磁鋼板を順送り型にて素材から打ち抜き、第2工程にて積層された電磁鋼板の上にセットする順送プレス加工を所定回数繰り返す(第3工程)。
【0027】
尚、順送プレス加工では各電磁鋼板の所定部位にかしめ部14が形成される。そして、各電磁鋼板は前記かしめ部14が同じ位置になるように型内にセットされる。これにより、型にセットされた電磁鋼板の凸部は、下部に隣接する電磁鋼板の凹部に入り込んだ状態で積層される。
【0028】
第1ないし第3工程により下部11b、中間部11c、上部11aを構成する全ての電磁鋼板が積層されると、最後に、かしめプレス加工により隣接する電磁鋼板が接合される。そして、嵌合孔12の内面にアルミ蒸着処理が施されることにより、軸支持体11が完成する。
【0029】
このように、本実施例は回転子1の軸支持体11を積層鋼板から構成したので、従来の軸支持体7に比べて、短く且つ簡単な工程で製造することができ、製造コストの削減を図ることができる。また、プレス加工により形成される各電磁鋼板は精度が良く、高品質であるため、前記軸支持体11の品質及び嵌合孔12の寸法精度を十分に確保できる。
【0030】
本実施例では、全ての積層鋼板をかしめにより相互に接合したので、軸支持体11の強度向上を図ることができる。この場合、各電磁鋼板の一部を切起こすことによりかしめ部14を構成した。従って、リベットなどの接合部材を用いて電磁鋼板を接合する構成に比べて簡単且つ安価な構成とすることができる。
【0031】
しかも、各電磁鋼板についてそれぞれ等間隔に配置された4個のかしめ部14を設けたので、電磁鋼板をバランス良く接合できる。また、各電磁鋼板の周方向の位置ずれを防止でき、一層の強度向上を図ることができる。
【0032】
更に、板厚偏差が小さい電磁鋼板を積層することにより軸支持体11を構成したので、軸支持体11の寸法精度の一層の向上を図ることができる。また、電磁鋼板はあらかじめ表面処理が施されているため、切断面ではない軸支持体11の上面及び下面の表面処理を省略することができる。
【0033】
ところで、電磁鋼板はモータの回転子鉄心として一般的に用いられる材料である。従って、上記構成の軸支持体11を、積層された電磁鋼板からなる回転子鉄心を備える外転形モータに適用した場合は、回転子鉄心と軸支持体11とを共取りでき、材料取りの効率向上を図ることができる。
【0034】
また、本実施例では軸支持体11は樹脂によりフレーム4と一体成形されている。このとき、軸支持体11の外周面には段差11d、11eが設けられていると共に、中間部11cの外周面を非円形状にしたため、樹脂成形品から軸支持体11が抜け出たり周方向に回動したりすることを防止できる。
【0035】
尚、本発明は上記し且つ図面に示した実施例に限定されるものではなく、例えば次のような変形、拡張が可能である。
【0036】
軸支持体の表面処理は、アルミ蒸着処理の他、亜鉛めっき処理、テフロン(登録商標)塗装を施しても良い。これらの処理を施すことによっても、錆防止、すべり性の向上を図ることができる。
【0037】
各電磁鋼板に設けるかしめ部は1ないし3箇所でも良く、また5箇所以上でも良い。更に、電磁鋼板に限らず鉄板を積層することにより軸支持体を構成しても良い。
【0038】
軸支持体の中間部の外周形状は十二角形に限らず、非円形状であれば良い。また、軸支持体の上部や下部を非円形状にしても良い。
本発明は、内転形のモータの回転子にも適用できる。
【0039】
【発明の効果】
以上の説明から明らかなように、本発明は、回転子鉄心を有する回転体の中心部に設けられた孔部に配置され、回転軸を嵌合支持するための軸支持体を、多数の金属板を軸方向に積層することにより構成したので、従来の軸支持体に比べて加工性の向上を図ると共に、寸法精度、機械的強度を十分に確保することができる。
【図面の簡単な説明】
【図1】本発明の一実施例を示す軸支持体の上面図
【図2】軸支持体の縦断面図
【図3】従来のモータの回転子を示す斜視図
【図4】縦断面図
【符号の説明】
図中、1は回転子、3は環状壁(回転子鉄心)、4はフレーム(回転体)、5はロータマグネット(回転体)、6はリング部材(回転子鉄心、回転体)、8は樹脂、11は軸支持体、11d,11eは段差、14はかしめ部を示す。
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a motor rotor having a shaft support for supporting a rotating shaft formed separately from a rotor core.
[0002]
[Problems to be solved by the invention]
For example, there is a rotor of an external rotation type permanent magnet motor disclosed in Japanese Patent No. 3017953. That is, as shown in FIGS. 3 and 4, the rotor 1 includes a magnetic frame 4 including a disk-shaped main plate portion 2 and an annular wall 3 provided on an outer peripheral edge of the main plate portion 2. A large number of rotor magnets 5 arranged annularly along the inner peripheral surface of the annular wall 3, and a ring member made of a magnetic material arranged on an outer peripheral portion of the annular wall 3 to secure a magnetic path of the rotor magnet 5. 6. It has a shaft support 7 arranged at the center of the main plate 2.
[0003]
The frame 4 is formed by pressing a magnetic iron plate, and is integrated with a rotor 8, a ring member 6, and a shaft support 7 by a resin 8.
[0004]
The shaft support 7 has a fitting hole 9 extending in the axial direction. A rotating shaft (not shown) is fitted into the fitting hole 9, and a serration 10 made up of a number of teeth extending in the axial direction is formed on the inner peripheral surface thereof. As described above, the rotation shaft is fitted into the fitting hole 9 in a detented state.
[0005]
As described above, since the shaft support 7 is a component for supporting the rotating shaft, a high dimensional accuracy is required for the fitting hole 9 and the outer peripheral shape thereof in order to improve the rotation accuracy of the rotor 1. . In this case, if the shaft support 7 is a resin molded product having excellent workability, a product having high dimensional accuracy can be obtained, but there is a disadvantage that mechanical strength is weak.
[0006]
Therefore, the conventional shaft support 7 is formed by forging having a high mechanical strength, particularly, cold forging. However, in cold forging, it is necessary to repeatedly perform press working in order to obtain a desired work shape, and it is difficult to design a mold itself. Further, the work after press forming needs to be subjected to precision processing, heat treatment (quenching), and polishing in order to secure the dimensional accuracy. For this reason, there was a defect that workability was poor and manufacturing cost was high. Further, the cold forging has a drawback that it is difficult to ensure accuracy and quality.
[0007]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotor of a motor having a shaft support that easily ensures high dimensional accuracy and has excellent workability.
[0008]
[Means for Solving the Problems]
The rotor of the motor according to claim 1 of the present invention includes a rotating body having a rotor core, and a shaft support for fitting and supporting a rotating shaft disposed in a hole provided in a center portion of the rotating body. The shaft support is characterized in that a large number of metal plates are laminated in the axial direction.
[0009]
In this case, the rotor is constituted by a rotor core disposed on the outer periphery of the stator and a frame supporting the rotor core, and the shaft support is disposed in a hole provided in a central portion of the frame. It is preferred that
[0010]
The processing of a metal plate requires fewer steps and is more accurate than cold forging. Therefore, according to the above configuration, it is possible to obtain a motor rotor having a shaft support having excellent workability and dimensional accuracy.
[0011]
The rotor of the motor according to claim 3 of the present invention is characterized in that the laminated metal plates are joined to each other by caulking. In this case, it is desirable that the joining by caulking be performed for all of the laminated metal plates (the invention of claim 4).
[0012]
According to the above configuration, the laminated metal plates can be easily fixed, and the strength of the shaft support can be improved.
[0013]
Further, in order to improve the slipperiness of the rotating shaft and prevent rust, at least the surface of the shaft support that is in contact with the rotating shaft may be subjected to a surface treatment (the invention of claim 5).
[0014]
It is a good configuration that the metal plate is made of an electromagnetic steel plate (the invention of claim 6). Since the magnetic steel sheet has a small thickness deviation, it is easy to secure dimensional accuracy. In addition, since the surface is coated in advance, the surface treatment of portions other than the cut surface can be omitted.
[0015]
The rotor of the motor according to claim 7 of the present invention is characterized in that the shaft support and the frame are integrally formed of resin. According to the above configuration, the shaft support can be securely fixed to the frame.
[0016]
In this case, it is preferable to provide a step in the axial direction on the outer peripheral surface of the shaft support (the invention of claim 8). According to the above configuration, it is possible to prevent the shaft support from coming off from the resin molded product of the shaft support and the frame.
[0017]
Further, in order to prevent the shaft support from rotating in the resin molded product of the shaft support and the frame, the shaft support may be provided with a portion having a non-circular cross-sectional shape perpendicular to the axial direction. (The invention of claim 9).
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS. The rotor according to the present embodiment is different from the conventional rotor shown in FIGS. 3 and 4 only in the configuration of the shaft support, and the other portions have the same configuration. Therefore, here, only the configuration of the shaft support of the rotor will be described, and description of the other portions will be omitted.
[0019]
The annular wall 3 and the ring member 6 of the frame 4 of the rotor 1 shown in FIGS. 3 and 4 correspond to the rotor core of the present invention. Further, the frame 4, the rotor magnet 5, and the ring member 6 correspond to the rotating body of the present invention.
[0020]
FIG. 1 is a plan view of the shaft support 11, and FIG. 2 is a longitudinal sectional view of the shaft support 11 taken along line XX in FIG. As shown in FIGS. 1 and 2, the shaft support 11 includes an upper portion 11 a and a lower portion 11 b having a circular outer shape, and a middle portion 11 c having a non-circular outer shape, for example, a dodecagon. ing.
[0021]
The outer diameters of the upper part 11a and the lower part 11b of the shaft support 11 are set substantially the same, and the minimum outer diameter of the intermediate part 11c is set larger than the outer diameters of the upper part and the lower part. For this reason, steps 11d and 11e are formed at the boundary between the intermediate portion 11c and the upper portion 11a and the lower portion 11b on the outer periphery of the shaft support 11.
[0022]
A fitting hole 12 penetrating in the axial direction is provided inside the shaft support 11. A rotating shaft (not shown) is fitted into the fitting hole 12. The portion of the fitting hole 12 located below the lower portion 11b and the lower portion of the intermediate portion 11c of the shaft support 11 is configured to have a large diameter, and the other portion is configured to have a small diameter. A serration 13 is provided which comprises a number of extending teeth 13a.
[0023]
The shaft support 11 is formed by laminating a large number of metal plates of a predetermined shape, for example, an electromagnetic steel plate, and is formed by performing an aluminum vapor deposition process on the inner surface of the fitting hole 12. The aluminum deposition process is performed to prevent rust on the inner surface of the fitting hole 12, which is a cut surface of the electromagnetic steel sheet, and to improve slipperiness.
[0024]
Further, all the laminated electromagnetic steel sheets are joined to each other by caulking. In the present embodiment, the crimped portion 14 made of a concave portion is provided for the magnetic steel sheet located at the lowermost portion, and the caulked portion 14 made of a raised portion and a concave portion formed by cutting and raising is provided for each of the other electromagnetic steel plates. Have been. The four caulking portions are evenly arranged radially.
[0025]
As described above, the shaft support 11 is integrated with the frame 4, the rotor magnet 5, and the ring member 6 by the resin 8 (see FIG. 3). Therefore, the outer peripheral surface, which is the cut surface of the shaft support 11 and is not subjected to the aluminum deposition process, is embedded in the resin 8. Further, since the shaft support 11 is integrated with the frame 4 by the resin 8, the shaft support 11 can be securely fixed to the frame 4.
[0026]
Next, a method of manufacturing the shaft support 11 will be briefly described. First, an annular electromagnetic steel sheet corresponding to the lower portion 11b of the shaft support 11 is punched out of a raw material by a progressive die, and a progressive press process of setting a position in a predetermined die is repeated a predetermined number of times (first step). Next, an annular electromagnetic steel sheet corresponding to the intermediate portion 11c is punched out of the material using a progressive die, and the progressive press working of setting the electromagnetic steel sheet laminated in the first step on the electromagnetic steel sheet is repeated a predetermined number of times (second step). . Subsequently, a circular press corresponding to the outer peripheral shape of the upper part 11a is punched out of the material by a progressive die from the material, and the progressive press working of setting on the laminated electromagnetic steel plates in the second step is repeated a predetermined number of times (first step). 3 steps).
[0027]
In the progressive press working, a caulked portion 14 is formed at a predetermined portion of each magnetic steel sheet. Each magnetic steel sheet is set in a mold so that the caulked portion 14 is at the same position. As a result, the protrusions of the electromagnetic steel sheets set in the mold are stacked in a state of being inserted into the recesses of the electromagnetic steel sheets adjacent to the lower part.
[0028]
When all the magnetic steel sheets constituting the lower part 11b, the intermediate part 11c, and the upper part 11a are stacked by the first to third steps, finally, the adjacent electromagnetic steel sheets are joined by caulking and pressing. Then, the inner surface of the fitting hole 12 is subjected to aluminum vapor deposition, whereby the shaft support 11 is completed.
[0029]
As described above, in this embodiment, since the shaft support 11 of the rotor 1 is formed of a laminated steel plate, the shaft support 11 can be manufactured in a shorter and simpler process than the conventional shaft support 7, thereby reducing the manufacturing cost. Can be achieved. In addition, since each electromagnetic steel sheet formed by press working has high accuracy and high quality, the quality of the shaft support 11 and the dimensional accuracy of the fitting hole 12 can be sufficiently ensured.
[0030]
In this embodiment, since all the laminated steel plates are joined to each other by caulking, the strength of the shaft support 11 can be improved. In this case, the caulked portion 14 was formed by cutting and raising a part of each electromagnetic steel sheet. Therefore, a simple and inexpensive configuration can be achieved as compared with a configuration in which electromagnetic steel sheets are bonded using a bonding member such as a rivet.
[0031]
In addition, since four caulking portions 14 are provided at equal intervals for each magnetic steel sheet, the magnetic steel sheets can be joined in a well-balanced manner. In addition, it is possible to prevent displacement of each electromagnetic steel sheet in the circumferential direction, and it is possible to further improve strength.
[0032]
Furthermore, since the shaft support 11 is formed by laminating electromagnetic steel sheets having small thickness deviations, the dimensional accuracy of the shaft support 11 can be further improved. Further, since the electromagnetic steel sheet has been subjected to a surface treatment in advance, it is possible to omit the surface treatment of the upper and lower surfaces of the shaft support 11 which is not a cut surface.
[0033]
Incidentally, an electromagnetic steel sheet is a material generally used as a rotor core of a motor. Therefore, when the shaft support 11 having the above-described configuration is applied to an external rotation type motor having a rotor core made of laminated electromagnetic steel sheets, the rotor core and the shaft support 11 can be co-produced, and material can be removed. Efficiency can be improved.
[0034]
In this embodiment, the shaft support 11 is formed integrally with the frame 4 by resin. At this time, the steps 11d and 11e are provided on the outer peripheral surface of the shaft support 11, and the outer peripheral surface of the intermediate portion 11c is formed in a non-circular shape. Rotation can be prevented.
[0035]
The present invention is not limited to the embodiment described above and shown in the drawings. For example, the following modifications and expansions are possible.
[0036]
As the surface treatment of the shaft support, in addition to aluminum vapor deposition, zinc plating and Teflon (registered trademark) coating may be performed. By performing these treatments, rust prevention and slipperiness can be improved.
[0037]
The number of caulked portions provided on each magnetic steel sheet may be one to three, or five or more. Further, the shaft support may be formed by laminating not only the electromagnetic steel plate but also an iron plate.
[0038]
The outer peripheral shape of the intermediate portion of the shaft support is not limited to a dodecagon, but may be a non-circular shape. The upper and lower portions of the shaft support may be non-circular.
The present invention can be applied to a rotor of an adduction type motor.
[0039]
【The invention's effect】
As is apparent from the above description, the present invention provides a shaft support for fitting and supporting a rotating shaft, which is disposed in a hole provided in the center of a rotating body having a rotor Since the plates are formed by laminating in the axial direction, workability can be improved as compared with a conventional shaft support, and sufficient dimensional accuracy and mechanical strength can be ensured.
[Brief description of the drawings]
FIG. 1 is a top view of a shaft support showing one embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the shaft support. FIG. 3 is a perspective view showing a rotor of a conventional motor. FIG. [Explanation of symbols]
In the figure, 1 is a rotor, 3 is an annular wall (rotor core), 4 is a frame (rotator), 5 is a rotor magnet (rotator), 6 is a ring member (rotor core, rotor), 8 is Resin, 11 indicates a shaft support, 11d and 11e indicate steps, and 14 indicates a caulked portion.

Claims (9)

回転子鉄心を有する回転体と、
前記回転体の中心部に設けられた孔部に配置され、回転軸を嵌合支持するための軸支持体とを有するモータの回転子において、
前記軸支持体は、多数の金属板を軸方向に積層することにより構成されていることを特徴とするモータの回転子。
A rotating body having a rotor core;
A motor rotor having a shaft support for fitting and supporting a rotation shaft, which is disposed in a hole provided in a center portion of the rotation body,
The rotor of the motor, wherein the shaft support is formed by laminating a number of metal plates in an axial direction.
回転体は、固定子の外周に配置された回転子鉄心及び前記回転子鉄心を支持するフレームとから構成され、
前記軸支持体は、前記フレームの中央部に設けられた孔部に配置されていることを特徴とする請求項1記載のモータの回転子。
The rotor is composed of a rotor core arranged on the outer periphery of the stator and a frame supporting the rotor core,
2. The motor rotor according to claim 1, wherein the shaft support is disposed in a hole provided at a center of the frame.
積層された金属板は、かしめにより相互に接合されていることを特徴とする請求項1または2記載のモータの回転子。3. The motor rotor according to claim 1, wherein the stacked metal plates are joined to each other by caulking. かしめによる接合は、積層された金属板の全てについて行われていることを特徴とする請求項3記載のモータの回転子。4. The motor rotor according to claim 3, wherein the joining by caulking is performed for all of the laminated metal plates. 支持体のうち少なくとも回転軸との接触面には表面処理が施されていることを特徴とする請求項1または2記載のモータの回転子。3. The motor rotor according to claim 1, wherein at least a contact surface of the support with the rotating shaft is subjected to a surface treatment. 金属板は、電磁鋼板から構成されていることを特徴とする請求項1または2記載のモータの回転子。3. The motor rotor according to claim 1, wherein the metal plate is made of an electromagnetic steel plate. 軸支持体とフレームとは、樹脂により一体成形されていることを特徴とする請求項2記載のモータの回転子。3. The motor rotor according to claim 2, wherein the shaft support and the frame are integrally formed of resin. 軸支持体は、その外周面に軸方向の段差を有することを特徴とする請求項7記載のモータの回転子。8. The motor rotor according to claim 7, wherein the shaft support has an axial step on its outer peripheral surface. 軸支持体は、軸方向と直交する断面形状が非円形となる部分を有することを特徴とする請求項7記載のモータの回転子。The motor rotor according to claim 7, wherein the shaft support has a portion having a non-circular cross-sectional shape perpendicular to the axial direction.
JP2002198710A 2002-07-08 2002-07-08 Motor rotor Pending JP2004040984A (en)

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JP2002198710A JP2004040984A (en) 2002-07-08 2002-07-08 Motor rotor
TW092106978A TWI226144B (en) 2002-07-08 2003-03-27 Rotator of generator
KR10-2003-0019112A KR100530413B1 (en) 2002-07-08 2003-03-27 Rotor of motor
CNB031083994A CN1253987C (en) 2002-07-08 2003-03-28 Motor rotor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2465857A (en) * 2008-12-03 2010-06-09 Zhongshan Broad Ocean Motor Co PMDC motor rotor and a method for producing the same
GB2465858A (en) * 2008-12-03 2010-06-09 Zhongshan Broad Ocean Motor Co PMDC motor rotor with coolant impelling vanes

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KR100777281B1 (en) * 2005-11-17 2007-11-20 엘지전자 주식회사 Direct type motor of washing machine and manufacturing method thereof
CN205901469U (en) * 2016-07-23 2017-01-18 中山大洋电机股份有限公司 An outer rotor assembly and an outer rotor motor using the same
KR101725479B1 (en) 2016-08-31 2017-04-12 충북대학교 산학협력단 Revetment block for reducing the flow rate of stream and Revetment block structure thereby
CN110165807B (en) * 2019-05-28 2020-06-09 徐州方达电机有限公司 Punching sheet structure of permanent magnet motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2465857A (en) * 2008-12-03 2010-06-09 Zhongshan Broad Ocean Motor Co PMDC motor rotor and a method for producing the same
GB2465858A (en) * 2008-12-03 2010-06-09 Zhongshan Broad Ocean Motor Co PMDC motor rotor with coolant impelling vanes
GB2465858B (en) * 2008-12-03 2013-05-15 Zhongshan Broad Ocean Motor Co Housing for external rotor motor and rotor produced thereby
GB2465857B (en) * 2008-12-03 2013-05-15 Zhongshan Broad Ocean Motor Co Rotor for a direct current drive motor and a method for producing the same

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