JP2009077603A - Electric motor - Google Patents

Electric motor Download PDF

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Publication number
JP2009077603A
JP2009077603A JP2007246464A JP2007246464A JP2009077603A JP 2009077603 A JP2009077603 A JP 2009077603A JP 2007246464 A JP2007246464 A JP 2007246464A JP 2007246464 A JP2007246464 A JP 2007246464A JP 2009077603 A JP2009077603 A JP 2009077603A
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Japan
Prior art keywords
rotor
stator
frame
electric motor
cylindrical portion
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JP2007246464A
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Japanese (ja)
Inventor
Hirobumi Narita
博文 成田
Tomohiro Okawa
友弘 大川
Eiji Toyoda
栄治 豊田
Kunihiro Sakamoto
国弘 坂本
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Hitachi Appliances Inc
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Hitachi Appliances Inc
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Priority to JP2007246464A priority Critical patent/JP2009077603A/en
Priority to CNA2008101297715A priority patent/CN101399471A/en
Publication of JP2009077603A publication Critical patent/JP2009077603A/en
Withdrawn legal-status Critical Current

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  • Iron Core Of Rotating Electric Machines (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric motor which reduces a time required for press working of a stator frame and a rotor frame for complementing the bending strength of a stator core and a rotor core which are split, and improves a yield of materials to be used. <P>SOLUTION: In this electric motor, the stator frame has: a stator cylindrical portion in which the outer periphery of a stator core is fitted to the inner periphery of the stator frame; and an annular stator flange portion extending substantially perpendicular in the outer peripheral direction from one end of the stator cylindrical portion. The rotor frame has: a rotor cylindrical portion in which the inner periphery of the rotor core is fitted to the outer periphery of the stator cylindrical portion; and a plate-like rotor disk portion extending substantially perpendicularly in the inner peripheral direction from one end of the rotor cylindrical portion. The outer diameter of the rotor cylindrical portion of the rotor frame is made smaller than the inner diameter of the stator cylindrical portion of the stator frame, and in press working, the stator frame and the rotor frame are composite-pressed from a common plate steel material so that the rotor frame exists inside the stator frame. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、洗濯機や洗濯乾燥機等に使用される電動機において、分割した鉄心で構成される回転子、および固定子を有する電動機に関するものである。   The present invention relates to an electric motor used in a washing machine, a washing / drying machine, and the like, and relates to an electric motor having a rotor composed of divided iron cores and a stator.

洗濯機や洗濯乾燥機等に使用される電動機として、ブラシレスの電動機がある。このブラシレスの電動機は、例えば、特許文献1(特開2002−315235号公報)に示される。   As an electric motor used for a washing machine, a washing dryer, and the like, there is a brushless electric motor. This brushless electric motor is disclosed in, for example, Japanese Patent Application Laid-Open No. 2002-315235.

ブラシレスの電動機は、回転子の外周側に複数の永久磁石磁極片が配置されるように設けられる。この永久磁石磁極片が配置される回転子の回転子鉄心や固定子の固定子鉄心は分割した鉄心で形成されている。   The brushless electric motor is provided such that a plurality of permanent magnet pole pieces are arranged on the outer peripheral side of the rotor. The rotor core of the rotor and the stator core of the stator where the permanent magnet pole pieces are arranged are formed of divided cores.

特開2002−315235号公報JP 2002-315235 A

多極で磁石埋め込み形の電動機において、鉄心の材料歩留まりを向上するには分割した固定子鉄心と回転子鉄心を使用する必要がある。分割した固定子鉄心や回転子鉄心を円環状にして撓み強度を保つために、固定子フレームは内周側に固定子鉄心の外周が嵌合する固定子円筒部を有し、回転子フレームは、外周側に回転子鉄心の内周が嵌合する回転子円筒部を有する。   In a multi-pole, magnet-embedded motor, it is necessary to use a divided stator core and rotor core in order to improve the material yield of the core. In order to maintain the bending strength by making the divided stator core or rotor core into an annular shape, the stator frame has a stator cylindrical portion on the inner peripheral side where the outer periphery of the stator core is fitted, and the rotor frame is And a rotor cylindrical portion in which the inner periphery of the rotor core is fitted on the outer peripheral side.

この固定子フレームや回転子フレームは、鋼鈑をプレス加工して整形するので、整形に費やす時間の短縮化と、鋼鈑は固定子鉄心や回転子鉄心を円形に保つために、比較的に板厚の厚いものを用いる必要があるため、材料歩留まりの向上が求められる。   These stator frames and rotor frames are shaped by pressing a steel plate, so that the time required for shaping is shortened, and the steel plate is relatively easy to keep the stator core and rotor core round. Since it is necessary to use a thick plate, an improvement in material yield is required.

本発明は、上記の課題に鑑み、分割した固定子鉄心や回転子鉄心の撓み強度を補完する固定子フレームと回転子フレームのプレス加工に要する時間が短縮化され、かつ使用する鋼材の材料歩留まりを向上した電動機を提供することを目的とする。   In view of the above problems, the present invention shortens the time required for press working of the stator frame and the rotor frame that complement the flexural strength of the divided stator core and rotor core, and the material yield of the steel material to be used. An object of the present invention is to provide an electric motor with improved performance.

本発明は、固定子と、前記固定子に対して回転自在なる回転子と、固定子を構成する、鋼板で形成された固定子フレームと、固定子フレームに固定支持され、円弧状の分割固定鉄心片を環状に連結した積層電磁鋼板の固定子鉄心と、回転子を構成する、鋼板で形成された回転子フレームと、回転子フレームに固定支持され、円弧状の分割回転鉄心片を環状に連結した積層電磁鋼板の回転子鉄心と、を有する電動機において、固定子フレームは、内周側に固定子鉄心の外周が嵌合する固定子円筒部と、固定子円筒部の一端より外周方向にほぼ直角に延在する環状の固定子鍔部を有し、回転子フレームは、外周側に回転子鉄心の内周が嵌合する回転子円筒部と、回転子円筒部の一端より内周方向にほぼ直角に延在する平板状の回転子円盤部を有し、回転子フレームの回転子円筒部の外径は、固定子フレームの固定子円筒部の内径よりも小径に形成し、固定子フレームと回転子フレームをプレス加工では、固定子フレームの内側に回転子フレームが存在するようにして同じ平板鋼材より一緒に共取り整形することを特徴とする。   The present invention includes a stator, a rotor that is rotatable with respect to the stator, a stator frame that is formed of a steel plate and that constitutes the stator, and is fixedly supported by the stator frame and is arcuately divided and fixed. A stator core of laminated electromagnetic steel plates in which core pieces are connected in a ring shape, a rotor frame formed of steel plates constituting the rotor, and fixedly supported by the rotor frame, and an arc-shaped divided rotary core piece in a ring shape In the electric motor having the rotor cores of the laminated electromagnetic steel plates connected to each other, the stator frame includes a stator cylindrical portion in which the outer periphery of the stator core is fitted on the inner peripheral side, and an outer peripheral direction from one end of the stator cylindrical portion. The rotor frame has an annular stator collar portion extending substantially at right angles, and the rotor frame has a rotor cylindrical portion that fits the inner periphery of the rotor core on the outer peripheral side, and an inner peripheral direction from one end of the rotor cylindrical portion. Has a flat-plate-like rotor disk portion extending substantially at right angles to The outer diameter of the rotor cylindrical portion of the rotor frame is formed to be smaller than the inner diameter of the stator cylindrical portion of the stator frame, and when the stator frame and the rotor frame are pressed, the rotor is placed inside the stator frame. It is characterized by co-shaping and shaping together from the same flat steel material in the presence of a frame.

本発明によれば、固定子フレームと回転子フレームを共取り整形するのでプレス加工に要する時間が短縮化され、かつ使用する鋼材の材料歩留まりが向上した電動機を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, since a stator frame and a rotor frame are shape | molded and shape | molded together, the time which press processing is shortened, and the electric motor with which the material yield of the steel materials to be used was improved can be provided.

本発明の実施例について、図面を引用して説明する。   Embodiments of the present invention will be described with reference to the drawings.

まず、本発明の電動機を搭載した洗濯乾燥機の概要を、図19を引用して説明する。   First, an outline of a washing and drying machine equipped with the electric motor of the present invention will be described with reference to FIG.

洗濯乾燥機本体の外枠200内には、洗濯水が溜まる外槽201が防振機構202を介して支持される。洗濯ドラム槽203は外槽201内に回転自在に置かれる。ブラシレスの電動機100は、洗濯ドラム槽203を回転駆動する。   An outer tub 201 in which washing water accumulates is supported through an anti-vibration mechanism 202 in the outer frame 200 of the washing / drying machine main body. The washing drum tub 203 is rotatably placed in the outer tub 201. The brushless electric motor 100 rotationally drives the washing drum tub 203.

電動機100は、外槽201の後側背面に支持される。洗濯ドラム槽203は回転軸5を介して電動機100の回転軸に支持されて回転する。   The electric motor 100 is supported on the rear rear surface of the outer tub 201. The washing drum tub 203 is supported by the rotating shaft of the electric motor 100 via the rotating shaft 5 and rotates.

洗濯時には、洗濯ドラム槽203は40〜50RPM程度の速度で回され、洗濯ドラム槽203内の洗濯物206を叩き洗いする。脱水時には、千数百RPMの高速で回転し、洗濯物206に含まれる水分を遠心脱水する。   At the time of washing, the washing drum tub 203 is rotated at a speed of about 40 to 50 RPM, and the laundry 206 in the washing drum tub 203 is beaten and washed. At the time of dehydration, it rotates at a high speed of several thousand RPM, and the water contained in the laundry 206 is centrifugally dehydrated.

洗濯に使われた洗濯水や遠心脱水された洗濯水は、排水路207から排水される。   The washing water used for washing and the washing water subjected to centrifugal dewatering are drained from the drainage channel 207.

洗濯物206の乾燥は、乾燥通風路208を通じて洗濯ドラム槽203内を循環する乾燥用通風209により乾燥が行われる。   The laundry 206 is dried by drying ventilation 209 that circulates in the washing drum tub 203 through the drying ventilation path 208.

ブラシレスの電動機100について、図1,図2を引用して説明する。   The brushless electric motor 100 will be described with reference to FIGS.

まず、図1,図2を引用して電動機100の概要から説明する。   First, the outline of the electric motor 100 will be described with reference to FIGS.

電動機100は、回転子1と、固定子2と、金属フランジ3と、軸受500を有する軸受ボス部4aと軸受501を有する軸受ボス部4bに回転自在に支持され、回転子1を固定支持する回転軸5を有する。   The electric motor 100 is rotatably supported by a rotor 1, a stator 2, a metal flange 3, a bearing boss portion 4 a having a bearing 500 and a bearing boss portion 4 b having a bearing 501, and fixedly supports the rotor 1. A rotating shaft 5 is provided.

回転子1は、多数の回転磁極をもった回転子鉄心11を有する。回転子鉄心11の回転磁極が、固定鉄心7の固定磁極の内側面に対向して相対移動するように回転子1は回転する。固定子2の上面には回転子1を覆うようにカバー6が取付けられている。   The rotor 1 has a rotor core 11 having a large number of rotating magnetic poles. The rotor 1 rotates so that the rotating magnetic pole of the rotor core 11 moves relative to the inner surface of the fixed magnetic pole of the fixed iron core 7. A cover 6 is attached to the upper surface of the stator 2 so as to cover the rotor 1.

回転子1に関し、図4〜図9を引用して説明する。   The rotor 1 will be described with reference to FIGS.

回転子1は、図4,図5に示すように、回転子フレーム10と、回転子鉄心11と、永久磁石磁極片12と、軸固定ボス部13と、モールド用合成樹脂層14を有する。   As shown in FIGS. 4 and 5, the rotor 1 includes a rotor frame 10, a rotor core 11, a permanent magnet pole piece 12, a shaft fixing boss portion 13, and a synthetic resin layer 14 for molding.

回転子フレーム10は、板厚みが1.6mm〜3.2mmの鋼鈑材料をプレス加工の成型により形成する。この回転子フレーム10は、円筒形状の回転子円筒部20と、平板状の回転子円盤部21と、ボス支持筒22を有する。   The rotor frame 10 is formed by pressing a steel plate material having a plate thickness of 1.6 mm to 3.2 mm. The rotor frame 10 includes a cylindrical rotor cylinder portion 20, a flat rotor disc portion 21, and a boss support cylinder 22.

回転子円盤部21は、回転子円筒部20の一端より内周方向にほぼ直角に延在する平板のような形状をしている。ボス支持筒22は、回転子円盤部21の内周端を前記回転子円筒部20と反対向きに折り曲げて形成される。   The rotor disk portion 21 has a shape like a flat plate extending from one end of the rotor cylindrical portion 20 at a substantially right angle in the inner circumferential direction. The boss support cylinder 22 is formed by bending the inner peripheral end of the rotor disk portion 21 in the opposite direction to the rotor cylinder portion 20.

軸固定ボス部13は、鋼鈑を鍛造加工して形成される。軸固定ボス部13の中央には、回転子1の回転軸が挿入されて嵌合固定される軸嵌合穴23を設けられる。軸固定ボス部13の外周には、複数の切り欠き(図示せず)が設けられる。   The shaft fixing boss portion 13 is formed by forging a steel plate. In the center of the shaft fixing boss portion 13, a shaft fitting hole 23 into which the rotating shaft of the rotor 1 is inserted and fixed is provided. A plurality of notches (not shown) are provided on the outer periphery of the shaft fixing boss portion 13.

ボス支持筒22は、図7に示すように、付け根の反対側になる先端側に複数の切り欠き凹23を設ける。ボス支持筒22に配置するボス部13は、ボス支持筒22の切り欠きと軸固定ボス部13の切り欠き凹23が互い違いになるように置かれ、モールド用合成樹脂層14により結合される。   As shown in FIG. 7, the boss support cylinder 22 is provided with a plurality of cutout recesses 23 on the tip side opposite to the base. The boss portion 13 disposed in the boss support tube 22 is placed so that the notches of the boss support tube 22 and the notch recesses 23 of the shaft fixing boss portion 13 are alternated, and are joined by the synthetic resin layer 14 for molding.

軸固定ボス部13は、モールド用合成樹脂層14を介してボス支持筒22に結合されるが、ボス支持筒22の切り欠きと軸固定ボス部13の切り欠き凹23が互い違いになるような組み合せになっているので、軸固定ボス部13とボス支持筒22は軸方向に長い位置で結合することにより径の小さいところでも強固に結合することができる。このため、軸固定ボス部13とボス支持筒22の結合は径の小さい位置で結合することによりボス支持筒22の使用材料を少なくすることができる。   The shaft fixing boss portion 13 is coupled to the boss support tube 22 via the molding synthetic resin layer 14, but the notch of the boss support tube 22 and the notch recess 23 of the shaft fixing boss portion 13 are staggered. Since they are combined, the shaft fixing boss portion 13 and the boss support tube 22 can be firmly coupled even at a small diameter by coupling at a long position in the axial direction. For this reason, the coupling | bonding of the axis | shaft fixed boss | hub part 13 and the boss | hub support cylinder 22 can reduce the use material of the boss | hub support cylinder 22 by couple | bonding in the position where a diameter is small.

軸固定ボス部13側は、モールド用合成樹脂層14を介してボス支持筒22側と電気的に絶縁される。このため、回転子1の回転軸に固定支持される洗濯ドラム槽203は、電動機100の固定子2と電気的に絶縁される。   The shaft fixing boss portion 13 side is electrically insulated from the boss support tube 22 side via the molding synthetic resin layer 14. For this reason, the washing drum tub 203 fixedly supported on the rotating shaft of the rotor 1 is electrically insulated from the stator 2 of the electric motor 100.

回転子鉄心11は、図8,図9に示すように、円弧状の分割回転鉄心片30を環状に連結した積層電磁鋼板により形成される。この環状の回転子鉄心11は、これの内周を回転子円筒部20の外周に嵌合して回転子フレーム10に固定支持される。   As shown in FIGS. 8 and 9, the rotor core 11 is formed of a laminated electrical steel sheet in which arc-shaped divided rotary core pieces 30 are connected in an annular shape. The annular rotor core 11 is fixedly supported by the rotor frame 10 by fitting the inner periphery thereof to the outer periphery of the rotor cylindrical portion 20.

円弧状の分割回転鉄心片30は、図9に示すように、両端にホゾ31とホゾ穴32を有する。隣り合う分割回転鉄心片30のホゾ31とホゾ穴32を結合して環状の回転子鉄心11が作られる。   As shown in FIG. 9, the arc-shaped split rotary core piece 30 has a side 31 and a side hole 32 at both ends. An annular rotor core 11 is formed by connecting the horn 31 and the dent hole 32 of the adjacent divided rotary core pieces 30.

ホゾ31とホゾ穴32によって連結された可撓性を有する回転子鉄心11の剛性化は、回転子フレーム10の回転子円筒部20によって齎される。   Stiffening of the flexible rotor core 11 connected by the horn 31 and the boss hole 32 is crushed by the rotor cylindrical portion 20 of the rotor frame 10.

この剛性化のため、回転子鉄心11を内側から支える回転子円筒部20が必要であり、1.6mm〜3.2mm程度の板厚をもった鋼鈑材料をプレス加工で成型した寸法精度の高い堅牢な回転子円筒部20を用いることによって、真円度が高く剛性のある回転子鉄心11にすることができる。   In order to achieve this rigidity, a rotor cylindrical portion 20 that supports the rotor core 11 from the inside is necessary, and a steel plate material having a plate thickness of about 1.6 mm to 3.2 mm is formed by press working. By using the highly robust rotor cylindrical portion 20, the rotor core 11 having high roundness and rigidity can be obtained.

環状の回転子側小突起33は、回転子円盤部21の反対側になる回転子円筒部20の端部側に回転子円盤部21とは逆向に外周方向に突き出すように形成される。   The annular rotor-side small protrusion 33 is formed on the end side of the rotor cylindrical portion 20 on the opposite side of the rotor disk portion 21 so as to protrude in the outer peripheral direction opposite to the rotor disk portion 21.

この環状の回転子側小突起33は、回転子円筒部20に嵌合された回転子鉄心11の軸方向の位置決めとして機能する。すなわち、回転子円筒部20の外周に嵌め込まれた回転子鉄心11が、回転子円筒部20の奥側まで送り込まれると、回転子側小突起33に突当って止まる。   The annular rotor-side small protrusion 33 functions as an axial positioning of the rotor core 11 fitted to the rotor cylindrical portion 20. That is, when the rotor core 11 fitted to the outer periphery of the rotor cylindrical portion 20 is fed to the back side of the rotor cylindrical portion 20, it strikes against the rotor-side small protrusion 33 and stops.

このように回転子鉄心11の組み込みでは、回転子側小突起33により、自動的に位置決めが行われるので組み立てがし易い。また、回転子鉄心11は回転子側小突起33により、抜け止めがされるので脱落防止になる。   As described above, when the rotor core 11 is assembled, positioning is automatically performed by the rotor-side small protrusion 33, so that the assembly is easy. Further, the rotor core 11 is prevented from falling off by the rotor-side small protrusion 33, so that it is prevented from falling off.

多数の永久磁石磁極片12は、図5に示すように、回転子鉄心11の外周近傍に設けて溝に等ピッチで挿入配置される。モールド用合成樹脂層14は、多数の永久磁石磁極片12,回転子鉄心11,回転子フレーム10,軸固定ボス部13を被覆するようにモールドされる。   As shown in FIG. 5, a large number of permanent magnet pole pieces 12 are provided in the vicinity of the outer periphery of the rotor core 11 and are inserted and arranged in the grooves at an equal pitch. The molding synthetic resin layer 14 is molded so as to cover a large number of permanent magnet pole pieces 12, the rotor core 11, the rotor frame 10, and the shaft fixing boss portion 13.

ファン翼34は、モールド用合成樹脂層14と一体に形成される。このファン翼34により、電動機100の内部は冷却される。   The fan blades 34 are formed integrally with the molding synthetic resin layer 14. The fan blades 34 cool the interior of the electric motor 100.

固定子2に関し、図10〜図18を引用して説明する。   The stator 2 will be described with reference to FIGS.

固定子2は、図10,図11に示すように、固定子フレーム40と、固定子鉄心41を有する。   As shown in FIGS. 10 and 11, the stator 2 includes a stator frame 40 and a stator core 41.

固定子フレーム40は、板厚が1.6mm〜3.2mmの鋼鈑材料をプレス加工の整形により形成する。   The stator frame 40 is formed by shaping a steel plate material having a plate thickness of 1.6 mm to 3.2 mm by press working.

固定子フレーム40は、図12,図13に示すように、内周側に固定子鉄心41の外周が嵌合する固定子円筒部42と、固定子円筒部の一端より外周方向にほぼ直角に延在する環状の固定子鍔部43を有する。固定子鍔部43には電動機取付け穴48が複数個設けられている。固定子鉄心41は分割固定子鉄心片44を複数個環状に連結した積層電磁鋼板により形成されているため外径を圧縮したときの撓み強度が小さく、内径精度も変形し易いため精度維持が困難となる。また、分割固定子鉄心片44側に電動機取付け穴を設けても強度と精度の両方を維持するのは極めて困難である。   As shown in FIGS. 12 and 13, the stator frame 40 includes a stator cylindrical portion 42 in which the outer periphery of the stator core 41 is fitted on the inner peripheral side, and substantially perpendicular to the outer peripheral direction from one end of the stator cylindrical portion. It has an annular stator collar 43 that extends. The stator collar portion 43 is provided with a plurality of motor mounting holes 48. Since the stator core 41 is formed of a laminated electrical steel sheet in which a plurality of split stator core pieces 44 are connected in a ring shape, the bending strength when the outer diameter is compressed is small, and the inner diameter accuracy is also easily deformed, so it is difficult to maintain the accuracy. It becomes. Moreover, it is extremely difficult to maintain both strength and accuracy even if a motor mounting hole is provided on the split stator core piece 44 side.

固定子鉄心41は、図15,図14に示すように、円弧状の分割固定子鉄心片44を環状に連結した積層電磁鋼板により形成される。この環状の固定子鉄心41は、これの外周を固定子円筒部42の内周に嵌合して固定子フレーム40に固定支持される。   As shown in FIGS. 15 and 14, the stator core 41 is formed of a laminated electrical steel sheet in which arc-shaped split stator core pieces 44 are connected in an annular shape. The annular stator core 41 is fixedly supported by the stator frame 40 by fitting the outer periphery thereof to the inner periphery of the stator cylindrical portion 42.

円弧状の分割固定鉄心片44は電磁鋼板を積層したもので図15に示すように、両端にホゾ45とホゾ穴46を有する。本実施例では積層時に電磁鋼板同士を結合するノッチの図示は省略している。隣り合う分割固定鉄心片44のホゾ45とホゾ穴46を結合して環状の回転子鉄心41が作られる。   The arc-shaped split fixed core piece 44 is a laminate of electromagnetic steel plates, and has a side 45 and a side hole 46 at both ends as shown in FIG. In the present embodiment, the illustration of notches for joining the magnetic steel sheets during lamination is omitted. An annular rotor iron core 41 is formed by joining the tenon 45 and the tenon hole 46 of the adjacent divided fixed iron core pieces 44.

ホゾ45とホゾ穴46によって連結された固定子鉄心41は一体で積層されたものに比較すると撓み強度については嵌合部があるため低下する。このため、撓み強度を上げる必要があり可撓性を有する固定子鉄心41の剛性化は、固定子フレーム40の固定子円筒部42によってもたらされる。   The stator core 41 connected by the tenon 45 and the tenon hole 46 has a bending strength lower than that of the one laminated integrally, because there is a fitting portion. For this reason, it is necessary to increase the flexural strength, and the rigidity of the flexible stator core 41 is brought about by the stator cylindrical portion 42 of the stator frame 40.

この剛性化のため、固定子鉄心41を外側から支える固定子円筒部42が必要であり、1.6mm〜3.2mm程度の板厚をもった鋼鈑材料をプレス加工で成型した寸法精度の高い堅牢な固定子円筒部42を用いることによって、真円度の高い剛性のある固定子鉄心41にすることができる。   In order to achieve this rigidity, a stator cylindrical portion 42 that supports the stator core 41 from the outside is necessary, and a steel plate material having a plate thickness of about 1.6 mm to 3.2 mm is formed by press working. By using the high-stiffness stator cylindrical portion 42, the stator core 41 having high roundness and rigidity can be obtained.

環状の固定子側小突起47は、固定子鍔部43の反対側端になる固定子円筒部42の端部側に固定子鍔部43とは逆向の内周方向に突き出るように形成される。   The annular stator side small protrusion 47 is formed on the end side of the stator cylindrical portion 42 which is the opposite end of the stator collar portion 43 so as to protrude in the inner circumferential direction opposite to the stator collar portion 43. .

この環状の固定子側小突起47は、固定子円筒部42に嵌合された固定子鉄心41の位置決めとして機能する。すなわち、固定子円筒部42の内周に嵌め込まれた固定子鉄心41が、固定子円筒部42の奥側まで送り込まれると、固定子側小突起47に突当って止まる。   This annular stator side small protrusion 47 functions as a positioning of the stator core 41 fitted to the stator cylindrical portion 42. That is, when the stator core 41 fitted to the inner periphery of the stator cylindrical portion 42 is fed to the inner side of the stator cylindrical portion 42, the stator core 41 abuts against the stator-side small protrusion 47 and stops.

このように固定子鉄心41の組み込みでは、固定子側小突起47により、自動的に位置決めが行われるので組み立てがし易い。また、固定子鉄心41は固定子側小突起47により、抜け止めがされるので脱落防止になる。   As described above, when the stator core 41 is assembled, the positioning is automatically performed by the stator-side small protrusion 47, so that the assembly is easy. Further, the stator iron core 41 is prevented from coming off by the stator side small projections 47, so that it is prevented from falling off.

固定子鍔部43には電動機取付け穴48が複数個設けられている。分割固定子鉄心片44に電動機取付け穴48を設けた時の撓み強度は分割数が多いほど低下するので電動機取付け穴48は分割数と同一にする必要がある。しかしながら、分割数が多い程内径精度は低下する。このため、固定子フレーム40を介して電動機を固定することにより撓み強度の増加と内径精度の向上を図っている。本実施例では固定子フレーム40の精度により内径精度は決定されるので固定子フレーム40の内径を機械加工して精度を向上させている。   The stator collar portion 43 is provided with a plurality of motor mounting holes 48. Since the bending strength when the motor mounting hole 48 is provided in the divided stator core piece 44 decreases as the number of divisions increases, the motor mounting hole 48 needs to be the same as the number of divisions. However, the larger the number of divisions, the lower the inner diameter accuracy. For this reason, the bending strength is increased and the inner diameter accuracy is improved by fixing the electric motor via the stator frame 40. In this embodiment, since the inner diameter accuracy is determined by the accuracy of the stator frame 40, the inner diameter of the stator frame 40 is machined to improve the accuracy.

固定子フレーム40に電動機取付け穴48を設けることにより、分割固定子鉄心片44に電動機取付け穴48を設ける必要が無いので分割固定子鉄心片44の材料歩留まりを向上させることができ、総合的に鋼材の使用量を低減することができる。   By providing the motor mounting holes 48 in the stator frame 40, there is no need to provide the motor mounting holes 48 in the split stator core pieces 44, so that the material yield of the split stator core pieces 44 can be improved. The amount of steel used can be reduced.

図16,図17,図18は、固定子鉄心の他の実施例を示す。   16, 17 and 18 show another embodiment of the stator core.

固定子鉄心410は、分割固定子鉄心片440が先に述べた実施例の分割固定子鉄心片44と違う。   In the stator core 410, the split stator core piece 440 is different from the split stator core piece 44 of the embodiment described above.

分割固定子鉄心片440は、図17に示すように、直線的に打ち抜かれる。それを図18に示すように円弧形状に折り曲げて分割固定子鉄心片440が出来上がる。折り曲げの加工工程が増えるが、板材料の無駄を少なくできるメリットがある。   The split stator core pieces 440 are punched linearly as shown in FIG. As shown in FIG. 18, the split stator core piece 440 is completed by bending it into an arc shape. Although the bending process increases, there is an advantage that the waste of the plate material can be reduced.

上記実施例の分割固定子鉄心片44、440は複数のティースを有する。このティース単体が一つの分割固定子鉄心片を構成して、連結して環状の固定子鉄心を作ることも可能である。   The divided stator core pieces 44 and 440 of the above embodiment have a plurality of teeth. It is also possible that this single tooth constitutes one split stator core piece and is connected to make an annular stator core.

次に本発明の主要部である回転子フレームと固定子フレームの共取り整形加工に関し、図3を引用して説明する。   Next, a description will be given of the co-shaping and shaping of the rotor frame and the stator frame, which is a main part of the present invention, with reference to FIG.

図3の(a)は、所定の寸法に打ち抜かれた板厚が1.6mmないし3.2mmの板状鋼材の母材を示す。この母材をプレス加工機で深絞り成型して図3の(b)に示すように、固定子フレーム40の部分と回転子フレーム10の部分を一体に成型する。   FIG. 3A shows a base material of a plate steel material having a plate thickness of 1.6 mm to 3.2 mm punched to a predetermined dimension. The base material is deep-drawn by a press machine and the stator frame 40 and the rotor frame 10 are integrally formed as shown in FIG.

この一体成型の工程後に、図3の(c)に示すように、固定子フレーム40と回転子フレーム10に分割する。この分割の工程は、プレス加工機内で行われる。このとき、板厚は電動機の外形が大きいほど厚くなる。本実施例では外形が約280mmと大きいため板厚は3.2mmを使用している。   After the integral molding step, the stator frame 40 and the rotor frame 10 are divided as shown in FIG. This division process is performed in a press machine. At this time, the plate thickness increases as the outer shape of the electric motor increases. In this embodiment, since the outer shape is as large as about 280 mm, the plate thickness is 3.2 mm.

この固定子フレーム40と回転子フレーム10のプレス加工では、固定子フレーム40の内側に回転子フレーム10が存在するようにして同じ平板の鋼材より一緒に共取り整形を行う。この共取り整形により、固定子フレームと回転子フレームを別個にプレス加工するものに比べ、材料の無駄を少なくできる。   In the press working of the stator frame 40 and the rotor frame 10, co-shaping is performed together from the same flat steel material so that the rotor frame 10 exists inside the stator frame 40. By this co-shaping shaping, waste of material can be reduced as compared with the case where the stator frame and the rotor frame are separately pressed.

また、単体の工数に比較して深絞りの整形型と、分割の工程が増えるが、固定子フレームと回転子フレームが一緒に作られるので、別個にプレス加工するものに比べ、成型時間が大幅に短縮されると共に材料歩留まりを向上させることができる。   In addition, deep drawing shaping and division processes increase compared to the single man-hours, but the stator frame and the rotor frame are made together, so the molding time is significantly longer than those that are pressed separately. And the material yield can be improved.

本発明の実施例に係るもので、電動機の縦断面図。The longitudinal cross-sectional view of an electric motor which concerns on the Example of this invention. 本発明の実施例に係るもので、電動機の正面図。The front view of the electric motor according to the embodiment of the present invention. 本発明の実施例に係るもので、回転子フレームと固定子フレームの共取り成型加工を示す図。The figure which concerns on the Example of this invention, and shows the co-molding process of a rotor frame and a stator frame. 本発明の実施例に係るもので、回転子の正面図。The front view of the rotor which concerns on the Example of this invention. 本発明の実施例に係るもので、回転子の断面図。The sectional view of the rotor according to the embodiment of the present invention. 本発明の実施例に係るもので、回転子フレームの正面図。The front view of the rotor frame according to the embodiment of the present invention. 本発明の実施例に係るもので、回転子フレームの断面図。The sectional view of the rotor frame according to the embodiment of the present invention. 本発明の実施例に係るもので、回転子鉄心の正面図。The front view of the rotor core according to the embodiment of the present invention. 本発明の実施例に係るもので、回転子鉄心の分割回転鉄心片を示す図。The figure which concerns on the Example of this invention and shows the division | segmentation rotary core piece of a rotor core. 本発明の実施例に係るもので、固定子の正面図。回転子鉄心を回転子支持受治具に装着した状態を示す図。固定子2は、図10,図11に示すように、固定子フレーム40と、固定子鉄心41を有する。The front view of the stator which concerns on the Example of this invention. The figure which shows the state which mounted | wore the rotor support receiving jig with the rotor core. As shown in FIGS. 10 and 11, the stator 2 includes a stator frame 40 and a stator core 41. 本発明の実施例に係るもので、固定子の断面図。Sectional drawing of a stator which concerns on the Example of this invention. 本発明の実施例に係るもので、固定子フレームの正面図。The front view of the stator frame according to the embodiment of the present invention. 本発明の実施例に係るもので、固定子フレームの断面図。The sectional view of the stator frame according to the embodiment of the present invention. 本発明の実施例に係るもので、固定子鉄心の正面図。The front view of the stator core according to the embodiment of the present invention. 本発明の実施例に係るもので、固定子鉄心の分割固定子鉄心片を示す正面図。The front view which concerns on the Example of this invention and shows the split stator core piece of a stator core. 本発明の他の実施例に係るもので、固定子鉄心の正面図。The front view of the stator core which concerns on the other Example of this invention. 本発明の他の実施例に係るもので、打ち抜かれた分割固定子鉄心片を示す正面図。The front view which concerns on the other Example of this invention and shows the division | segmentation stator core piece punched out. 本発明の他の実施例に係るもので、円弧状に曲げた分割固定子鉄心片を示す正面図。The front view which concerns on the other Example of this invention and shows the division | segmentation stator core piece bent in circular arc shape. 本発明の実施例に係るもので、電動機を洗濯乾燥機に搭載した洗濯乾燥機の縦断面図。The longitudinal cross-sectional view of the washing-drying machine which concerns on the Example of this invention and mounted the electric motor in the washing-drying machine.

符号の説明Explanation of symbols

1 回転子
2 固定子
10 回転子フレーム
11 回転子鉄心
12 永久磁石磁極片
13 軸固定ボス部
14 モールド用合成樹脂層
20 回転子円筒部
21 回転子円盤部
22 ボス支持筒
33 回転子側小突起
40 固定子フレーム
41 固定子鉄心
42 固定子円筒部
43 固定子鍔部
44 分割固定子鉄心片
47 固定子側小突起
48 電動機取付け穴
100 電動機
DESCRIPTION OF SYMBOLS 1 Rotor 2 Stator 10 Rotor frame 11 Rotor core 12 Permanent magnet pole piece 13 Shaft fixing boss part 14 Synthetic resin layer 20 for molding Rotor cylindrical part 21 Rotor disk part 22 Boss support cylinder 33 Rotor side small protrusion 40 Stator frame 41 Stator core 42 Stator cylindrical portion 43 Stator collar 44 Split stator core piece 47 Stator side small protrusion 48 Electric motor mounting hole 100 Electric motor

Claims (8)

固定子と、前記固定子に対して回転自在なる回転子と、前記固定子を構成する鋼板で形成された固定子フレームと、前記固定子フレームに固定支持され、円弧状の分割固定子鉄心片を環状に連結した積層電磁鋼板の固定子鉄心と、前記回転子を構成する、鋼板で形成された回転子フレームと、回転子フレームに固定支持され円弧状の分割回転子鉄心片を環状に連結した積層電磁鋼板の回転子鉄心とを有する電動機において、
前記固定子フレームは、内周側に前記固定子鉄心の外周が嵌合する固定子円筒部と、前記固定子円筒部の一端より外周方向にほぼ直角に延在する環状の固定子鍔部を有し、
前記回転子フレームは、外周側に前記回転子鉄心の内周が嵌合する回転子円筒部と、前記回転子円筒部の一端より内周方向にほぼ直角に延在する平板状の回転子円盤部を有し、前記回転子フレームの回転子円筒部の外径は、前記固定子フレームの固定子円筒部の内径よりも小径に形成したことを特徴とする電動機。
A stator, a rotor rotatable with respect to the stator, a stator frame formed of a steel plate constituting the stator, and an arc-shaped divided stator core piece fixedly supported by the stator frame; The stator core of laminated electromagnetic steel plates connected in a ring, the rotor frame formed of steel plates constituting the rotor, and the arc-shaped split rotor core pieces fixedly supported by the rotor frame are connected in a ring In the electric motor having the rotor core of the laminated laminated steel sheet,
The stator frame includes a stator cylindrical portion in which an outer periphery of the stator core is fitted on an inner peripheral side, and an annular stator flange portion extending substantially perpendicularly to an outer peripheral direction from one end of the stator cylindrical portion. Have
The rotor frame includes a rotor cylindrical portion in which an inner periphery of the rotor core is fitted on an outer peripheral side, and a flat-plate-shaped rotor disk extending substantially perpendicularly to an inner peripheral direction from one end of the rotor cylindrical portion. And an outer diameter of the rotor cylindrical portion of the rotor frame is smaller than an inner diameter of the stator cylindrical portion of the stator frame.
請求項1記載の電動機において、固定子フレームと回転子フレームをプレス加工では、前記固定子フレームの内側に前記回転子フレームが存在するようにして同じ平板鋼材より一緒に共取り整形したことを特徴とする電動機。   2. The electric motor according to claim 1, wherein in the press working of the stator frame and the rotor frame, the rotor frame is present inside the stator frame so as to be co-shaped and shaped together from the same flat steel material. Electric motor. 請求項1及び請求項2記載の電動機において、
前記固定子円筒部は、前記固定子鍔部の反対側端に前記固定子鍔部とは逆向の内周方向に突き出る環状の固定子側小突起を有し、
前記固定子側小突起が前記固定子円筒部に嵌合される前記固定子鉄心の軸方向の位置決めとして機能することを特徴とする電動機。
In the electric motor according to claim 1 and claim 2,
The stator cylindrical portion has an annular stator side small protrusion that protrudes in an inner circumferential direction opposite to the stator collar at the opposite end of the stator collar.
The electric motor characterized in that the stator-side small protrusion functions as an axial positioning of the stator core fitted into the stator cylindrical portion.
請求項1及び請求項2記載の電動機において、
前記回転子円筒部は、前記回転子円盤部の反対側端に回転子円盤部とは逆向の外周方向に突き出る環状の回転子側小突起を有し、
前記回転子側小突起が前記回転子円筒部に嵌合される前記回転子鉄心の軸方向の位置決めとして機能することを特徴とする電動機。
In the electric motor according to claim 1 and claim 2,
The rotor cylindrical portion has an annular rotor-side small protrusion protruding in an outer peripheral direction opposite to the rotor disk portion at the opposite end of the rotor disk portion,
The electric motor, wherein the rotor-side small protrusion functions as an axial positioning of the rotor core fitted into the rotor cylindrical portion.
請求項1及び請求項2記載の電動機において、
前記回転子鉄心は配設される多数の永久磁石磁極片を備え、
前記回転子は前記回転子フレーム,前記回転子鉄心、および前記永久磁石磁極片を被覆するモールド用合成樹脂層を有することを特徴とする電動機。
In the electric motor according to claim 1 and claim 2,
The rotor core includes a number of permanent magnet pole pieces disposed,
The electric motor according to claim 1, wherein the rotor includes a synthetic resin layer for molding that covers the rotor frame, the rotor iron core, and the permanent magnet pole piece.
請求項1及び請求項2記載の電動機において、
前記回転子フレームは、前記回転子円盤部の内周端を前記回転子円筒部と反対向きに折り曲げたボス支持筒を有し、
前記ボス支持筒は多数の切り欠きを有し、
前記ボス支持筒のところに配置される軸固定ボス部を有し、
前記ボス支持筒と軸固定ボス部を被覆するモールド用合成樹脂層を有することを特徴とする電動機。
In the electric motor according to claim 1 and claim 2,
The rotor frame has a boss support cylinder in which an inner peripheral end of the rotor disk part is bent in a direction opposite to the rotor cylindrical part,
The boss support cylinder has a number of notches,
It has a shaft fixing boss portion arranged at the boss support tube,
An electric motor comprising a synthetic resin layer for molding covering the boss support cylinder and the shaft fixing boss portion.
請求項1及び請求項2記載の電動機において、
前記固定子フレーム,前記回転子フレームは、板厚が1.6mm〜3.3mmの鋼鈑で形成されることを特徴とする電動機。
In the electric motor according to claim 1 and claim 2,
The electric motor according to claim 1, wherein the stator frame and the rotor frame are formed of a steel plate having a thickness of 1.6 mm to 3.3 mm.
請求項1及び請求項2記載の電動機において、
固定子フレームの固定子鍔部43には電動機取付け穴48が複数個設けられていることを特徴とする電動機。
In the electric motor according to claim 1 and claim 2,
An electric motor characterized in that a plurality of electric motor mounting holes 48 are provided in the stator collar portion 43 of the stator frame.
JP2007246464A 2007-09-25 2007-09-25 Electric motor Withdrawn JP2009077603A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012073959A1 (en) * 2010-12-03 2012-06-07 本田技研工業株式会社 Stator
JP2021153385A (en) * 2018-08-10 2021-09-30 株式会社Piezo Sonic Piezoelectric motor and injection device
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WO2012073959A1 (en) * 2010-12-03 2012-06-07 本田技研工業株式会社 Stator
JPWO2012073959A1 (en) * 2010-12-03 2014-05-19 本田技研工業株式会社 Stator
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US9379589B2 (en) 2010-12-03 2016-06-28 Honda Motor Co., Ltd. Stator
JP2021153385A (en) * 2018-08-10 2021-09-30 株式会社Piezo Sonic Piezoelectric motor and injection device
US11998717B2 (en) 2018-08-10 2024-06-04 Piezo Sonic Corporation. Piezoelectric motor and injection device
WO2023026563A1 (en) * 2021-08-23 2023-03-02 日立グローバルライフソリューションズ株式会社 Rotary electrical machine and washing machine equipped with same

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