JP6843688B2 - Electric blower and vacuum cleaner equipped with it - Google Patents

Electric blower and vacuum cleaner equipped with it Download PDF

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JP6843688B2
JP6843688B2 JP2017083299A JP2017083299A JP6843688B2 JP 6843688 B2 JP6843688 B2 JP 6843688B2 JP 2017083299 A JP2017083299 A JP 2017083299A JP 2017083299 A JP2017083299 A JP 2017083299A JP 6843688 B2 JP6843688 B2 JP 6843688B2
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winding
core
electric blower
stator
connecting member
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JP2018182987A (en
Inventor
坂上　誠二
誠二 坂上
賢宏 伊藤
賢宏 伊藤
武史 本多
武史 本多
浩平 京谷
浩平 京谷
佐藤　繁則
繁則 佐藤
林　正二
正二 林
勇介 浅海
勇介 浅海
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Hitachi Global Life Solutions Inc
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Hitachi Global Life Solutions Inc
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Priority to CN201810180539.8A priority patent/CN108730209B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0673—Battery powered
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure

Description

本発明は、電動送風機及びそれを搭載した電気掃除機に関する。 The present invention relates to an electric blower and a vacuum cleaner equipped with the electric blower.

近年需要が急速に高まっているコードレス掃除機や自走式電気掃除機においては、低電圧のバッテリー駆動でも十分な出力を得ると共に、振動や騒音を低減するためにＤＣブラシレスモータを用いた電動送風機が使用されている。 In cordless vacuum cleaners and self-propelled vacuum cleaners, whose demand has been rapidly increasing in recent years, electric blowers that use a DC brushless motor to obtain sufficient output even when driven by a low-voltage battery and reduce vibration and noise. Is used.

また、電気掃除機の小型化を達成するために、電動送風機の小型化も求められている。電動送風機の小型化に関しては、電動送風機を高速化することでファンの外径を小さくすることが出来る。そのため、ブラシレスモータの回転数を毎分約８万回転以上としている例がある。 Further, in order to achieve the miniaturization of the electric vacuum cleaner, the miniaturization of the electric blower is also required. Regarding the miniaturization of the electric blower, the outer diameter of the fan can be reduced by increasing the speed of the electric blower. Therefore, there is an example in which the rotation speed of the brushless motor is set to about 80,000 rotations or more per minute.

従来の電気掃除機用の電動送風機としては、例えば、特開２０１６−１５３６３６号公報（特許文献１）に開示されているものがある。 As an electric blower for a conventional vacuum cleaner, for example, there is one disclosed in Japanese Patent Application Laid-Open No. 2016-153636 (Patent Document 1).

特許文献１に開示されている電動送風機は、「回転自在に設けられた回転軸と、前記回転軸の軸方向の略中央に設けられた軸受部と、前記回転軸の一端に設けられた遠心羽根車と、前記回転軸の前記軸受部を挟んで前記遠心羽根車とは逆側に設けられるロータコアと、前記ロータコアの周囲に対向して配置されるステータコアと、前記回転軸の他端に設けられるリング部材と、を備え、前記リング部材は、前記ロータコアの比重よりも大きく、かつ、非磁性の材料で構成されている。」と記載されている。 The electric blower disclosed in Patent Document 1 includes "a rotary shaft provided rotatably, a bearing portion provided substantially in the center of the rotary shaft in the axial direction, and a centrifuge provided at one end of the rotary shaft. An impeller, a rotor core provided on the opposite side of the centrifugal impeller so as to sandwich the bearing portion of the rotating shaft, a stator core arranged so as to face the periphery of the rotor core, and provided at the other end of the rotating shaft. The ring member is made of a non-magnetic material having a specific gravity larger than that of the rotor core. "

特開２０１６−１５３６３６号公報Japanese Unexamined Patent Publication No. 2016-153636

前記特許文献１の電動送風機は、軸端に設けられたリング部材と遠心羽根車でバランス調整するために、回転体（ロータ組立体）のアンバランス量を小さくでき、回転体の振動が低減され、毎分８万回転以上の高速回転を可能とし、電動送風機の小型化が図られる。また、回転振動が低減されることで電機掃除機の運転音も低減される。 In the electric blower of Patent Document 1, since the balance is adjusted by the ring member provided at the shaft end and the centrifugal impeller, the unbalance amount of the rotating body (rotor assembly) can be reduced, and the vibration of the rotating body is reduced. It enables high-speed rotation of 80,000 rpm or more, and the electric blower can be miniaturized. In addition, the operating noise of the electric vacuum cleaner is also reduced by reducing the rotational vibration.

しかし、電動送風機を運転するとロータコアとステータコアとの間に発生する電磁力が、ロータコアの回転に伴って周期的に変化する。この周期的に変化する電磁力により、ステータコアが振動する場合があり、騒音を発生する恐れがあった。また、ステータコアの周りには絶縁材の巻枠が配置され、巻枠を介して界磁巻線が巻かれており、ステータコアの振動が巻枠を伝わり、巻枠から騒音を発生する恐れがあった。 However, when the electric blower is operated, the electromagnetic force generated between the rotor core and the stator core changes periodically with the rotation of the rotor core. Due to this periodically changing electromagnetic force, the stator core may vibrate, which may generate noise. In addition, a winding frame of an insulating material is arranged around the stator core, and a field winding is wound through the winding frame, and the vibration of the stator core is transmitted through the winding frame, which may generate noise from the winding frame. It was.

本発明の目的は、上記課題を解決するものであり、簡単な構造でステータ部から発生する振動を抑制し、騒音の低減、特に回転周波数の高調波（回転周波数の整数倍）騒音の低減を図ることができる電動送風機及び電気掃除機を提供することにある。 An object of the present invention is to solve the above problems, to suppress vibration generated from a stator portion with a simple structure, and to reduce noise, particularly harmonics of rotation frequency (integer times of rotation frequency). The purpose is to provide an electric blower and a vacuum cleaner that can be designed.

上記課題を解決するために、代表的な本発明の電動送風機の一つは、ロータコア及びステータコアを備えた電動機と、回転自在に設けられた回転軸と、回転軸の一端部付近に一体成形されるロータコアと、回転軸の他端部付近に取り付けられる回転翼と、ロータコアと回転翼との間の回転軸に取り付けられる一対の軸受と、一対の軸受を保持するハウジングと、回転翼を覆うファンケーシングとを備え、ステータコアは同一形状の複数の分割コアを連結することで構成され、分割コアには各分割コアを覆う絶縁部材の巻枠が配置され、隣り合う巻枠同士の隙間を繋ぐ接続部材を設けたことにより達成される。 In order to solve the above problems, one of the representative electric blowers of the present invention is integrally molded with an electric motor having a rotor core and a stator core, a rotating shaft provided rotatably, and a vicinity of one end of the rotating shaft. A rotor core, a rotary blade attached near the other end of the rotary shaft, a pair of bearings attached to the rotary shaft between the rotor core and the rotary blade, a housing for holding the pair of bearings, and a fan covering the rotary blade. A casing is provided, and the stator core is configured by connecting a plurality of divided cores having the same shape. A wound frame of an insulating member covering each divided core is arranged in the divided core, and a connection connecting adjacent winding frames to each other. This is achieved by providing the members.

本発明によれば、モータステータ部の振動を抑制し、騒音の低減、特に回転周波数の高調波騒音の低減を図ることができる電動送風機及びこれを備えた電気掃除機を提供することが可能である。 According to the present invention, it is possible to provide an electric blower capable of suppressing vibration of a motor stator portion and reducing noise, particularly reduction of harmonic noise of a rotation frequency, and an electric vacuum cleaner provided with the electric blower. is there.

上記した以外の課題、構成及び効果は、以下の実施形態の説明により明らかにされる。 Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.

（ａ）は本発明の実施形態例における電動送風機の外観図、（ｂ）は電動送風機の縦断面図ある。(A) is an external view of the electric blower according to the embodiment of the present invention, and (b) is a vertical sectional view of the electric blower. （ａ）は本発明の実施形態例におけるステータコアの平面図、（ｂ）はステータコアを構成する分割コアの斜視図である。(A) is a plan view of the stator core in the embodiment of the present invention, and (b) is a perspective view of the divided core constituting the stator core. （ａ）は本発明の実施形態例におけるステータを構成する分割コアと巻枠の分解斜視図、（ｂ）は分割コアと巻枠を嵌合した斜視図、（ｃ）は分割コアに巻枠を嵌合し界磁巻線を巻いた外観斜視図である。(A) is an exploded perspective view of the split core and the winding frame constituting the stator in the embodiment of the present invention, (b) is a perspective view in which the split core and the winding frame are fitted, and (c) is a winding frame on the split core. It is an external perspective view which fitted and wound the field winding. （ａ）は本発明の実施形態例におけるステータをファンケーシング側から見た外観斜視図、（ｂ）はステータの断面図、（ｃ）はステータを反ファンケーシング側から見た外観斜視図である。(A) is an external perspective view of the stator in the embodiment of the present invention as seen from the fan casing side, (b) is a cross-sectional view of the stator, and (c) is an external perspective view of the stator as seen from the anti-fan casing side. .. （ａ）は本発明の実施形態例における巻枠同士を固定する接続部材の外観斜視図、（ｂ）は接続部材の断面図である。(A) is an external perspective view of a connecting member for fixing the winding frames in the embodiment of the present invention, and (b) is a cross-sectional view of the connecting member. 本発明の実施形態例における接続部材を取り付けたステータを反ファンケーシング側から見た外観斜視図である。It is an external perspective view of the stator attached with the connecting member in the Example of Embodiment of this invention as seen from the anti-fan casing side. 接続部材による騒音低減効果を説明する周波数分析結果である。It is a frequency analysis result explaining the noise reduction effect by a connecting member. 本発明の接続部材の変形例を示す外観斜視図である。It is an external perspective view which shows the modification of the connection member of this invention. （ａ）は本発明の他の実施形態例におけるステータをファンケーシング側から見た外観斜視図、（ｂ）は（ａ）に示すステータの断面図である。(A) is an external perspective view of the stator in another embodiment of the present invention as viewed from the fan casing side, and (b) is a cross-sectional view of the stator shown in (a). （ａ）は図９に示す接続部材を示す外観斜視図、（ｂ）は接続部材の断面図である。(A) is an external perspective view showing the connecting member shown in FIG. 9, and (b) is a cross-sectional view of the connecting member. （ａ）は本発明の他の実施形態例の巻枠を用いたときの分割コアの断面図、（ｂ）はステータの断面図の部分拡大図である。(A) is a cross-sectional view of a divided core when the winding frame of another embodiment of the present invention is used, and (b) is a partially enlarged view of a cross-sectional view of a stator. 本発明の一実施例における電動送風機が適用される電気掃除機の斜視図である。It is a perspective view of the electric vacuum cleaner to which the electric blower in one Example of this invention is applied. 図１２の電気掃除機における掃除機本体を模式的に示した断面図である。It is sectional drawing which shows typically the vacuum cleaner main body in the vacuum cleaner of FIG.

以下、本発明の一実施例について、図面を参照し説明する。本実施の形態例において、回転翼は遠心羽根車を用いて説明する。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the example of the present embodiment, the rotary blade will be described using a centrifugal impeller.

図１２及び図１３により、本発明の一実施例に係る電気掃除機３００について説明する。図１２に本実施例の電動送風機が適用される電気掃除機の斜視図を示す。 A vacuum cleaner 300 according to an embodiment of the present invention will be described with reference to FIGS. 12 and 13. FIG. 12 shows a perspective view of an electric vacuum cleaner to which the electric blower of the present embodiment is applied.

図１２に示すように、１００は塵埃を集塵する集塵室１０１及び集塵するのに必要な吸込気流を発生させる電動送風機２００（図１３）を収納する掃除機本体、１０２は掃除機本体１００を取り付ける保持部、１０３は保持部１０２の一端部に設けたグリップ部、１０４はグリップ部に設けられた電動送風機２００の入切を行うスイッチ部である。保持部１０２の他端部には吸口体１０５が取り付けられ、掃除機本体１００と吸口体１０５は接続部１０６で繋がれている。１０７は電池ユニット１０８（図１３）を充電する充電台である。 As shown in FIG. 12, 100 is a vacuum cleaner main body that houses a dust collecting chamber 101 that collects dust and an electric blower 200 (FIG. 13) that generates a suction airflow necessary for collecting dust, and 102 is a vacuum cleaner main body. A holding portion for attaching 100, 103 is a grip portion provided at one end of the holding portion 102, and 104 is a switch portion for turning on / off the electric blower 200 provided on the grip portion. A mouthpiece 105 is attached to the other end of the holding portion 102, and the vacuum cleaner main body 100 and the mouthpiece 105 are connected by a connecting portion 106. Reference numeral 107 denotes a charging stand for charging the battery unit 108 (FIG. 13).

以上の構成において、グリップ部１０３のスイッチ部１０４を操作すると、掃除機本体１００に収納された電動送風機２００が運転し、吸込気流を発生させる。そして、吸口体１０５から塵埃を吸込み、接続部１０６を通して掃除機本体１００の集塵室１０１に集塵する。 In the above configuration, when the switch portion 104 of the grip portion 103 is operated, the electric blower 200 housed in the vacuum cleaner main body 100 operates to generate a suction airflow. Then, the dust is sucked from the mouthpiece 105 and collected in the dust collecting chamber 101 of the vacuum cleaner main body 100 through the connecting portion 106.

次に、図１３に示す電気掃除機における掃除機本体１００を模式的に示した断面図を用いて、掃除機本体１００について説明する。掃除機本体１００の内部には、吸引力を発生させる電動送風機２００、電動送風機２００を駆動する電池ユニット１０８、駆動用回路１０９、集塵室１０１が配置されている。
掃除機本体１００は保持部１０２から取り外しハンディ掃除機として使用することができ、掃除機本体１００には本体ブリップ部１１０と吸口開口１１１が備えられている。１１２（図１２）はハンディ掃除機として使用するときの電動送風機２００の入切を行う本体スイッチ部である。なお、本体スイッチ１１２は掃除機本体１００を保持部１０２に取り付けているときでも操作することができる。 Next, the vacuum cleaner main body 100 will be described with reference to a cross-sectional view schematically showing the vacuum cleaner main body 100 in the vacuum cleaner shown in FIG. Inside the vacuum cleaner main body 100, an electric blower 200 for generating suction force, a battery unit 108 for driving the electric blower 200, a drive circuit 109, and a dust collecting chamber 101 are arranged.
The vacuum cleaner main body 100 can be removed from the holding portion 102 and used as a handy vacuum cleaner, and the vacuum cleaner main body 100 is provided with a main body blip portion 110 and a mouthpiece opening 111. 112 (FIG. 12) is a main body switch unit for turning on / off the electric blower 200 when used as a handy vacuum cleaner. The main body switch 112 can be operated even when the vacuum cleaner main body 100 is attached to the holding portion 102.

次に、図１（ａ）に示す電動送風機の外観図と、（ｂ）に示す電動送風機の縦断面図を参照して電動送風機２００について説明する。この電動送風機２００は、送風機部２０１と電動機部２０２に大別される。送風機部２０１は、回転翼である遠心羽根車１と、該遠心羽根車１を収納するファンケーシング２及び、複数のディフューザ羽根３ａと該ディフューザ羽根３ａの裏面に複数のリターンガイド羽根３ｂを備えた案内翼３で構成される。ファンケーシング２には空気吸込口２ａが設けられている。ファンケーシング２の内面には弾性体を用いた気密保持部材２ｂがファンケーシング２に一体成形されている。本実施例ではインサート成形により気密保持部材２ｂとファンケーシング２を一体成形している。
遠心羽根車１は熱可塑性樹脂製で、回転軸４に直結されている。ここで、本実施例では、回転翼である遠心羽根車１を回転軸４に圧入固定しているが、回転軸４の端部にねじを設け、遠心羽根車１を固定ナットを用い固定しても良い。 Next, the electric blower 200 will be described with reference to the external view of the electric blower shown in FIG. 1A and the vertical cross-sectional view of the electric blower shown in FIG. 1B. The electric blower 200 is roughly classified into a blower unit 201 and an electric motor unit 202. The blower unit 201 includes a centrifugal impeller 1 which is a rotary blade, a fan casing 2 for accommodating the centrifugal impeller 1, a plurality of diffuser blades 3a, and a plurality of return guide blades 3b on the back surface of the diffuser blades 3a. It is composed of a guide wing 3. The fan casing 2 is provided with an air suction port 2a. An airtight holding member 2b using an elastic body is integrally molded with the fan casing 2 on the inner surface of the fan casing 2. In this embodiment, the airtightness holding member 2b and the fan casing 2 are integrally molded by insert molding.
The centrifugal impeller 1 is made of thermoplastic resin and is directly connected to the rotating shaft 4. Here, in this embodiment, the centrifugal impeller 1 which is a rotary blade is press-fitted and fixed to the rotary shaft 4, but a screw is provided at the end of the rotary shaft 4 and the centrifugal impeller 1 is fixed by using a fixing nut. You may.

電動機部２０２は、ハウジング５内に収納される回転軸４に固定されているロータコア６、及びハウジング５に固定されているステータ７から構成される。 The electric motor unit 202 is composed of a rotor core 6 fixed to a rotating shaft 4 housed in the housing 5 and a stator 7 fixed to the housing 5.

ロータコア６は、回転軸４における遠心羽根車１が固定されている端部と逆側の端部側に形成されており、希土類系のボンド磁石からなる。希土類系のボンド磁石は、希土類系磁性粉末と有機バインダーとを混合して作られる。希土類系のボンド磁石としては、例えば、サマリウム鉄窒素磁石や、ネオジム磁石等を用いることができる。ロータコア６は回転軸４に一体成形されている。なお、本実施例ではロータコア６に永久磁石を用いているが、これに囚われることはなく、例えば毎分８０、０００回転以上の高速回転を可能とする無整流子電動機の一種であるリラクタンスモータなどを使用しても良い。
ステータ７はロータコア６の外周側に配置されハウジング５に固定ねじ８で固定されている。ステータ７は電磁鋼板を回転軸方向に積層し形成したステータコア９（図２）と、ステータコア９の周りに２つの巻枠１０、１１が配置され、巻枠１０、１１を介して界磁巻線１２が巻かれている。界磁巻線１２は、電動送風機２００に備わる図示しない回路部に電気的に接続される。巻枠１１の端部には巻枠１１同士を固定する接続部材１３（図５）が挿入固定されている。 The rotor core 6 is formed on the end side opposite to the end portion on which the centrifugal impeller 1 is fixed on the rotating shaft 4, and is made of a rare earth-based bond magnet. Rare earth-based bond magnets are made by mixing rare earth-based magnetic powder and an organic binder. As the rare earth-based bond magnet, for example, a samarium iron-nitrogen magnet, a neodymium magnet, or the like can be used. The rotor core 6 is integrally molded with the rotating shaft 4. Although a permanent magnet is used for the rotor core 6 in this embodiment, it is not bound by this, for example, a reluctance motor which is a kind of non-commutator electric motor capable of high-speed rotation of 80,000 rpm or more. May be used.
The stator 7 is arranged on the outer peripheral side of the rotor core 6 and is fixed to the housing 5 with fixing screws 8. The stator 7 has a stator core 9 (FIG. 2) formed by laminating electromagnetic steel plates in the direction of rotation axis, and two winding frames 10 and 11 are arranged around the stator core 9, and field windings are formed via the winding frames 10 and 11. 12 is wound. The field winding 12 is electrically connected to a circuit portion (not shown) provided in the electric blower 200. A connecting member 13 (FIG. 5) for fixing the winding frames 11 to each other is inserted and fixed at the end of the winding frame 11.

遠心羽根車１とロータコア６の間には軸受１４、１５を備え、回転軸４を回転自在に支持している。軸受１４と軸受１５の間には、圧縮された状態でばね１６が配置され、軸受１４、１５に予圧を付与している。軸受１４、１５と、ばね１６は軸受カバー１７に内包されている。回転軸４のロータコア６よりも端部にはバランス調整用のリング１８が取り付けられている。回転体を回転させて遠心羽根車１の背面とリング１８を削ることで２面バランス修正を行うことができる。バランス調整用リング１８はロータコア６よりも比重が大きい金属材料で、例えば銅材などの焼結品や機械加工で製作される。 Bearings 14 and 15 are provided between the centrifugal impeller 1 and the rotor core 6, and the rotating shaft 4 is rotatably supported. A spring 16 is arranged between the bearing 14 and the bearing 15 in a compressed state to apply a preload to the bearings 14 and 15. The bearings 14 and 15 and the spring 16 are included in the bearing cover 17. A ring 18 for balance adjustment is attached to the end of the rotating shaft 4 with respect to the rotor core 6. The two-sided balance can be corrected by rotating the rotating body and scraping the back surface of the centrifugal impeller 1 and the ring 18. The balance adjusting ring 18 is a metal material having a higher specific gravity than the rotor core 6, and is manufactured by a sintered product such as a copper material or machining.

ロータコア６と軸受１５の間には、軸受１５の位置決め用スリーブ１９が配置されている。ハウジング５は合成樹脂材であり、軸受１４、１５を内包する軸受カバー１７を固定する支持部２０を有している。軸受カバー１７は非磁性金属材料で、樹脂製ハウジング５とインサート成形によって一体化される。なお、軸受カバー１７はアルミニウム合金などの熱伝導率の高い材料が望ましい。 A sleeve 19 for positioning the bearing 15 is arranged between the rotor core 6 and the bearing 15. The housing 5 is made of a synthetic resin material and has a support portion 20 for fixing the bearing cover 17 including the bearings 14 and 15. The bearing cover 17 is a non-magnetic metal material and is integrated with the resin housing 5 by insert molding. The bearing cover 17 is preferably made of a material having high thermal conductivity such as an aluminum alloy.

樹脂製ハウジング５の支持部２０の端部には回転軸方向に延在するねじ穴２１が形成されている。ねじ穴２１には固定ねじ２２が螺合可能で、固定ねじ２２の螺合によって案内翼３が樹脂製ハウジング５に固定設置されている。ハウジング５には、ハウジング５内に空気が流れ込むように開口２３と、電動送風機２００の外部に空気を排出する排気口２４が設けられている。ハウジング５の端部に配置されるステータ７のステータコア９、巻枠１１は、固定ねじ８によってハウジング５に固定される。 A screw hole 21 extending in the direction of the rotation axis is formed at the end of the support portion 20 of the resin housing 5. A fixing screw 22 can be screwed into the screw hole 21, and the guide blade 3 is fixedly installed in the resin housing 5 by screwing the fixing screw 22. The housing 5 is provided with an opening 23 so that air can flow into the housing 5, and an exhaust port 24 for discharging air to the outside of the electric blower 200. The stator core 9 and the winding frame 11 of the stator 7 arranged at the end of the housing 5 are fixed to the housing 5 by the fixing screws 8.

次に、電動送風機２００内における空気の流れを説明する。電動機部２０２を駆動して回転翼である遠心羽根車１を回転させると、ファンケーシング２の空気吸込口２ａから空気が流入し、遠心羽根車１内に流入する。流入した空気は遠心羽根車１内で昇圧及び増速し、遠心羽根車１の外周から流出する。遠心羽根車１から流出した空気流は、案内翼３に導かれる。 Next, the flow of air in the electric blower 200 will be described. When the electric motor unit 202 is driven to rotate the centrifugal impeller 1 which is a rotary blade, air flows in from the air suction port 2a of the fan casing 2 and flows into the centrifugal impeller 1. The inflowing air is boosted and accelerated in the centrifugal impeller 1 and flows out from the outer periphery of the centrifugal impeller 1. The air flow flowing out from the centrifugal impeller 1 is guided to the guide blade 3.

案内翼３には複数のディフューザ羽根３ａが設けられ、空気流がディフューザ羽根３ａの羽根間で減速することによって、空気流のもつ運動エネルギーを圧力エネルギーに変換して圧力が上昇する。ディフューザ羽根３ａ間から流出された空気流は、ファンケーシング２の内面と案内翼３で形成された流路からリターンガイド羽根３ｂに流入する。
ディフューザ羽根３ａがファンケーシング２の気密保持部材２ｂに食い込むことで、ファンケーシング２とディフューザ羽根３ａとの気密性が保持される。これによって、案内翼３のディユーザ羽根３ａ間での漏れを防止することができ、送風機効率を向上させることができる。なお、本実施例では羽根付ディフューザを用いているが、羽根無しディフューザとしても良い。 A plurality of diffuser blades 3a are provided on the guide blades 3, and the air flow is decelerated between the blades of the diffuser blades 3a, so that the kinetic energy of the air flow is converted into pressure energy and the pressure rises. The air flow flowing out from between the diffuser blades 3a flows into the return guide blades 3b from the inner surface of the fan casing 2 and the flow path formed by the guide blades 3.
The airtightness between the fan casing 2 and the diffuser blades 3a is maintained by the diffuser blades 3a biting into the airtightness holding member 2b of the fan casing 2. As a result, leakage of the guide blade 3 between the deuser blades 3a can be prevented, and the blower efficiency can be improved. Although a diffuser with blades is used in this embodiment, a diffuser without blades may be used.

リターンガイド羽根３ｂを通過した空気流は、ハウジング５の開口２３からハウジング５内部に流入し、軸受カバー１７の冷却フィン２５を冷却し、これに伴い軸受カバー１７を介して軸受１４、１５を冷却する。また、ロータコア６、ステータコア９、界磁巻線１２などを冷却して外部へ排出する。これによって、ハウジング５内の各部が冷却される。リターンガイド羽根３ｂを通過した空気流の一部は、ハウジング５の排気口２４から外部へ排出する。 The air flow that has passed through the return guide blades 3b flows into the inside of the housing 5 through the opening 23 of the housing 5, cools the cooling fins 25 of the bearing cover 17, and cools the bearings 14 and 15 through the bearing cover 17 accordingly. To do. Further, the rotor core 6, the stator core 9, the field winding 12, and the like are cooled and discharged to the outside. As a result, each part in the housing 5 is cooled. A part of the air flow that has passed through the return guide blade 3b is discharged to the outside from the exhaust port 24 of the housing 5.

本発明の一実施例の電動機部２０２のステータ７を図２から図６を用い説明する。図２（ａ）は本発明の実施形態例におけるステータコア９の平面図、（ｂ）はステータコア９を構成する分割コア２６の斜視図、図３（ａ）はステータ７を構成する分割コア２６と巻枠１０、巻枠１１の分解斜視図、（ｂ）は分割コア２６と巻枠１０、巻枠１１を嵌合した斜視図、（ｃ）は分割コア２６に巻枠１０、巻枠１１を嵌合し界磁巻線１２を巻いた外観斜視図、図４（ａ）はステータ７をファンケーシング２側から見た外観斜視図、（ｂ）はステータ７の断面図、（ｃ）はステータ７を反ファンケーシング２側から見た外観斜視図、図５（ａ）は本発明の実施形態例における巻枠１１同士を固定する接続部材１３の外観斜視図、（ｂ）は接続部材の断面図、図６は本発明による接続部材１３を取り付けたステータ７の反ファンケーシング２側から見た外観斜視図である。 The stator 7 of the electric motor unit 202 according to an embodiment of the present invention will be described with reference to FIGS. 2 to 6. FIG. 2A is a plan view of the stator core 9 in the embodiment of the present invention, FIG. 2B is a perspective view of the split core 26 constituting the stator core 9, and FIG. 3A is a split core 26 constituting the stator 7. An exploded perspective view of the winding frame 10 and the winding frame 11, (b) is a perspective view in which the split core 26 and the winding frame 10 and the winding frame 11 are fitted, and (c) is a perspective view in which the winding frame 10 and the winding frame 11 are fitted to the split core 26. External perspective view in which the field winding 12 is fitted and wound, FIG. 4 (a) is an external perspective view of the stator 7 as viewed from the fan casing 2 side, (b) is a sectional view of the stator 7, and (c) is a stator. 7 is an external perspective view of 7 as viewed from the anti-fan casing 2 side, FIG. 5A is an external perspective view of a connecting member 13 for fixing the winding frames 11 in the embodiment of the present invention, and FIG. 5B is a cross section of the connecting member. FIG. 6 is an external perspective view of the stator 7 to which the connecting member 13 according to the present invention is attached, as viewed from the anti-fan casing 2 side.

先ず図２を用い、本発明に係る一実施例のステータ７を構成するステータコア９について説明する。本発明に係る一実施例のステータコア９は同一形状の分割コア２６を連結することによって構成している。分割コア２６は電磁鋼板を回転軸方向に積層し、かしめ部２７によって電磁鋼板同士を固定している。分割コア２６には、ヨーク部２８と、ポール部２９と、ティース部３０を備えている。各分割コア２６のヨーク部２８と、ポール部２９と、ティース部３０で囲まれた空間により、界磁巻線１２が挿入されるスロット部３１が形成される。 First, the stator core 9 constituting the stator 7 of the embodiment according to the present invention will be described with reference to FIG. The stator core 9 of the embodiment according to the present invention is configured by connecting split cores 26 having the same shape. In the split core 26, electromagnetic steel plates are laminated in the direction of the rotation axis, and the electromagnetic steel plates are fixed to each other by a caulking portion 27. The split core 26 includes a yoke portion 28, a pole portion 29, and a teeth portion 30. The space surrounded by the yoke portion 28, the pole portion 29, and the teeth portion 30 of each of the divided cores 26 forms a slot portion 31 into which the field winding 12 is inserted.

ヨーク部２８の周方向の端部には、分割コア２６同士を連結する略四角形状の溝部３２と、他方の端部には略四角形状の突起部３３が設けられている。ステータコア９は各分割コア２６を嵌合して一体形成される。なお、ステータ７は、各分割コア２６に巻枠１０、１１を配置し（図３（ｂ）参照）、巻枠１０、１１を介して各分割コア２６のポール部２９に界磁巻線１２を巻いた後に（図３（ｃ）参照）、各分割コア２６を連結し一体形成される。分割コア２６のヨーク部２８の周方向中央の外径側には、ハウジング５に固定するための貫通穴３４が設けられ、巻枠１１と共に固定ねじ８により、ハウジング５に固定される。 A substantially quadrangular groove portion 32 for connecting the divided cores 26 to each other is provided at the circumferential end of the yoke portion 28, and a substantially quadrangular protrusion 33 is provided at the other end portion. The stator core 9 is integrally formed by fitting each of the divided cores 26. In the stator 7, the winding frames 10 and 11 are arranged on the divided cores 26 (see FIG. 3B), and the field winding 12 is formed on the pole portion 29 of the divided cores 26 via the wound frames 10 and 11. After winding (see FIG. 3C), each divided core 26 is connected and integrally formed. A through hole 34 for fixing to the housing 5 is provided on the outer diameter side of the yoke portion 28 of the split core 26 in the center in the circumferential direction, and is fixed to the housing 5 together with the winding frame 11 by a fixing screw 8.

ステータコア９を分割コア２６とすることで、一体コアとした場合よりも電磁鋼板の材料利用率が向上し、材料費を低減することができる。また、界磁巻線１２を巻くポール部２９の周りが開放されているため巻線工程が行い易く、生産性を高くすることができる。さらに、界磁巻線１２を整然と巻くことが容易となるため、界磁巻線１２の長さを短くすることができ、電動送風機２００の効率向上を図ることができる。
また、各分割コア２６のカシメ部２７をヨーク部２８の両端側とポール部２９の３箇所に設けることで、分割コア２６単体の剛性が向上する。各分割コア２６の周方向端部の略四角形状の溝部３２と、略四角形状の突起部３３により、分割コア２６同士を強固に連結することができ、溶接等を必要とせずに一体型のステータコア９の剛性を高くすることができる。ここで、本実施例では、分割コア２６の周方向端部は略四角形状の溝部３２と略四角形状の突起部３３によって連結しているが、略台形形状、略三角形形状や略楕円形状などにしても良く、分割コア２６同士を強固に連結することができれば良い。
次に図３、図４を用い、本発明に係る一実施例のステータ７について説明する。本発明に係る一実施例の分割コア２６の周りには、２つの巻枠１０、巻枠１１が配置されている。巻枠１０、巻枠１１は絶縁性を有する合成樹脂材であり、界磁巻線１２が分割コア２６と直接接触するのを防止するように嵌合される。なお、図３（ａ）に示す分割コア２６は、積層した電磁鋼板を一体化して表示している。 By using the stator core 9 as the split core 26, the material utilization rate of the electrical steel sheet can be improved and the material cost can be reduced as compared with the case where the stator core 9 is an integral core. Further, since the circumference of the pole portion 29 around which the field winding 12 is wound is open, the winding process can be easily performed and the productivity can be increased. Further, since the field winding 12 can be easily wound in an orderly manner, the length of the field winding 12 can be shortened, and the efficiency of the electric blower 200 can be improved.
Further, by providing the caulking portions 27 of each split core 26 at both ends of the yoke portion 28 and the pole portion 29, the rigidity of the split core 26 alone is improved. The substantially quadrangular groove 32 at the circumferential end of each division core 26 and the substantially quadrangular protrusion 33 allow the division cores 26 to be firmly connected to each other, and are integrated without the need for welding or the like. The rigidity of the stator core 9 can be increased. Here, in the present embodiment, the circumferential end portion of the split core 26 is connected by a substantially quadrangular groove portion 32 and a substantially quadrangular protrusion portion 33, but a substantially trapezoidal shape, a substantially triangular shape, a substantially elliptical shape, etc. However, it suffices if the split cores 26 can be firmly connected to each other.
Next, the stator 7 of the embodiment according to the present invention will be described with reference to FIGS. 3 and 4. Two winding frames 10 and 11 are arranged around the divided core 26 of the embodiment according to the present invention. The winding frame 10 and the winding frame 11 are synthetic resin materials having an insulating property, and are fitted so as to prevent the field winding 12 from coming into direct contact with the split core 26. The split core 26 shown in FIG. 3A shows the laminated electromagnetic steel plates integrated.

巻枠１０、巻枠１１としては、成形がし易く電気絶縁性と、ある程度の耐熱性と剛性を兼ね備えたものであれば良く、例えば、ポリブチレンテレフタレータ樹脂（PBT）、ポリエチレンテレフタレート樹脂（PET）や、それらにガラス繊維が含まれているものなどが望ましい。
巻枠１０は、図３（ａ）に示す矢印Ａの示す方向から分割コア２６のヨーク部２８の内径側の内周面２８ａ及び上面２８ｂの内径側の一部と、ポール部２９の側面２９ａ及び上面２９ｂと、ティース部３０の側面３０ａ及び上面３０ｂを覆うように一体で成形される。また、巻枠１０には界磁巻線１２を巻くときの巻線ガイド３５が形成されている。 The winding frame 10 and the winding frame 11 may be any as long as they are easy to mold and have electrical insulation, heat resistance and rigidity to some extent. For example, polybutylene terephthalate resin (PBT) and polyethylene terephthalate resin ( PET) and those containing glass fiber are desirable.
The winding frame 10 includes an inner peripheral surface 28a on the inner diameter side of the yoke portion 28 of the split core 26, a part of the inner peripheral side of the upper surface 28b, and a side surface 29a of the pole portion 29 from the direction indicated by the arrow A shown in FIG. And the upper surface 29b, and integrally molded so as to cover the side surface 30a and the upper surface 30b of the tooth portion 30. Further, the winding frame 10 is formed with a winding guide 35 for winding the field winding 12.

巻枠１１は、図３（ａ）に示す矢印Ｂの示す方向から分割コア２６のヨーク部２８の外径側の外周面２８ｃの一部と下面２８ｄ及び、ポール部２９の下面（図示せず）と、ティース部３０の下面３０ｃを覆うように一体で成形される。また、巻枠１１には界磁巻線１２を巻くときの巻線ガイド３６と、ハウジング５にステータ７を固定するための取付穴３７（図４（ｃ）参照）が形成されている。 The winding frame 11 includes a part of the outer peripheral surface 28c and the lower surface 28d on the outer diameter side of the yoke portion 28 of the split core 26 from the direction indicated by the arrow B shown in FIG. 3A, and the lower surface 28d and the lower surface of the pole portion 29 (not shown). ) And the tooth portion 30 are integrally molded so as to cover the lower surface 30c. Further, the winding frame 11 is formed with a winding guide 36 for winding the field winding 12 and a mounting hole 37 (see FIG. 4C) for fixing the stator 7 to the housing 5.

図３（ｂ）、（ｃ）に示すように、分割コア２６に巻枠１０、巻枠１１を嵌合することで、スロット部３１が絶縁性を有する巻枠１０、巻枠１１で覆われるため、界磁巻線１２と分割コア２６が直接接触しないため、電気的に絶縁することができる。これにより、界磁巻線１２を分割コア２６に強い張力で巻くことができるため、分割コア２６と巻枠１０、巻枠１１は強く密着させ一体化させることができる。
巻枠１０、１１には、それぞれ巻線ガイド３５、３６が形成されており、界磁巻線１２をポール部２９に巻くときのガイドとなり、界磁巻線１２がティース部３０側にはみ出すのを防止し、界磁巻線１２を強い張力で巻くことが可能となる。
分割コア２６に界磁巻線１２を巻き、その後分割コア２６（図３（ｃ））同士を嵌合することでステータ７（図４）を形成する。図４に示すように、ステータ７のティース部３０や、巻線ガイド３５、３６は略円筒形状をしている。図１（ｂ）に示すように、略円筒形状の巻線ガイド３５の内径側には軸受カバー１７が配置され、略円筒形状の巻線ガイド３６の内径側にはバランス調整用のリング１８が配置される。各ティース部３０、各巻線ガイド３５及び、各巻線ガイド３６はそれぞれ隙間Ｃを有して形成されている。本実施例ではステータ７は３スロットとしているが、これに囚われることはなく、４スロットや６スロットなどスロット数を多くしても良く、ロータコア６の磁極数とスロット数を適正に設定すれば良い。
次に図５、図６を用い、本発明に係る一実施例の接続部材１３について説明する。本実施例では、図５に示す接続部材１３は、略円筒形状の巻線ガイド３６の端部に配置固定されている。接続部材１３は円環状の支持部３８の端面３８ａに連結部３９が形成され、連結部３９の側面３９ａには略三角形状の固定部４０が形成されている。接続部材１３は非磁性の合成樹脂材で、ポリブチレンテレフタレータ樹脂（PBT）、ポリエチレンテレフタレート樹脂（PET）や、それらにガラス繊維が含まれているものなどで一体成形されている。
連結部３９は略矩形の平板であり、巻線ガイド３６同士の隙間Ｃ（図４（ｃ）参照）に挿入し、巻線ガイド３６同士を周方向に接続して固定する。固定部４０の内径側の固定面４０ａは巻線ガイド３６の外径と接続して固定するように円弧状に形成され、界磁巻線１２が巻かれているところには、界磁巻線１２を配置できるように、つまり固定部４０間が空間となるように固定部４０を略三角形状としている。
連結部３９の支持部３８側の厚さｔ１は、連結部３９の先端の厚さｔ２よりも大きくしている。また、支持部３８側の厚さｔ１は、巻線ガイド３６同士の隙間Ｃよりもおよそ０.１〜０.３ｍｍ大きくしている。連結部３９の厚さをｔ１＞ｔ２としているため、金型から成形品をスムーズに離型されるのに好適である。また、巻線ガイド３６の隙間Ｃに接続部材１３を挿入するとき円滑に挿入できる。
さらに、支持部３８側の厚さｔ１は、巻線ガイド３６同士の隙間Ｃよりもおよそ０.１〜０.３ｍｍ大きくしているため、巻線ガイド３６の端面と支持部３８の端面３８ａが接触した時には巻線ガイド３６が外径側に広げられるため、巻線ガイド３６の外径と固定部４０の内面４０ａが密着し、しっかりと接続部材１３を保持することができる。
これにより、巻線ガイド３６の周方向と半径方向を強固に拘束することができる。さらに、巻枠１１の回転軸方向端面と接続部材１３の端面３８ａが接続して固定できるため、巻線ガイド３６の回転軸方向も拘束することができる。
なお、本実施例では固定部４０を略三角形状としているが、これに囚われることはなく、界磁巻線１２に干渉しなければ、略四角形状などとしても良く、固定部４０の内面４０ａと巻線ガイド１１の外径がほぼ一致した曲率を有し、接続部材１３と巻線ガイド１１とが密着できれば良い。
電動送風機２００を運転すると、ロータコア６とステータ７のティース部３０との間に発生する電磁力により、ステータ７のティース部３０に吸引力と反発力が発生し、ロータコア６の回転に伴ってティース部３０に周期的に変化する力が加えられる。この周期的に変化する力よってステータコア９が振動し回転周波数の高調波（回転周波数の整数倍）騒音が発生し易い。
本実施例では、巻枠１０、１１は、ステータコア９に強く密着されて形成されており、接続部材１３で巻線ガイド３６の半径方向と、周方向及び、回転軸方向を拘束することができ、ステータ７の振動を抑えることができ、回転周波数の高調波騒音を低減することができる。
また、１部品で成形される接続部材１３を巻枠１１に取り付けるため、ステータ７を組立てた後（図４）や、電動送風機２００として組立てた後に接続部材１３を簡単に取り付けることができるため、特別な生産設備を必要とせず組立性が良好である。よって、簡単な構造でステータ部から発生する振動を抑制し、騒音の低減を図ることができる。
また、接続部材１３は非磁性の合成樹脂材で製作されているため、ロータコア６の磁石による吸引力の影響を受けることが無く、組立性に優れた低騒音の電動送風機を得ることができる。 As shown in FIGS. 3B and 3C, by fitting the winding frame 10 and the winding frame 11 to the split core 26, the slot portion 31 is covered with the winding frame 10 and the winding frame 11 having insulating properties. Therefore, since the field winding 12 and the split core 26 do not come into direct contact with each other, they can be electrically insulated. As a result, the field winding 12 can be wound around the split core 26 with a strong tension, so that the split core 26, the winding frame 10, and the winding frame 11 can be strongly adhered to each other and integrated.
Winding guides 35 and 36 are formed on the winding frames 10 and 11, respectively, and serve as guides when winding the field winding 12 around the pole portion 29, so that the field winding 12 protrudes to the teeth portion 30 side. It is possible to wind the field winding 12 with a strong tension.
The field winding 12 is wound around the split core 26, and then the split cores 26 (FIG. 3 (c)) are fitted to each other to form the stator 7 (FIG. 4). As shown in FIG. 4, the tooth portion 30 of the stator 7 and the winding guides 35 and 36 have a substantially cylindrical shape. As shown in FIG. 1 (b), the bearing cover 17 is arranged on the inner diameter side of the substantially cylindrical winding guide 35, and the balance adjusting ring 18 is arranged on the inner diameter side of the substantially cylindrical winding guide 36. Be placed. Each tooth portion 30, each winding guide 35, and each winding guide 36 are formed with a gap C, respectively. In this embodiment, the stator 7 has 3 slots, but the number of slots may be increased, such as 4 slots or 6 slots, without being bound by this, and the number of magnetic poles and the number of slots of the rotor core 6 may be set appropriately. ..
Next, the connecting member 13 of the embodiment according to the present invention will be described with reference to FIGS. 5 and 6. In this embodiment, the connecting member 13 shown in FIG. 5 is arranged and fixed at the end of the winding guide 36 having a substantially cylindrical shape. In the connecting member 13, a connecting portion 39 is formed on the end surface 38a of the annular support portion 38, and a substantially triangular fixing portion 40 is formed on the side surface 39a of the connecting portion 39. The connecting member 13 is a non-magnetic synthetic resin material, and is integrally molded with polybutylene terephthalate resin (PBT), polyethylene terephthalate resin (PET), or one containing glass fiber.
The connecting portion 39 is a substantially rectangular flat plate, is inserted into the gap C between the winding guides 36 (see FIG. 4C), and connects and fixes the winding guides 36 in the circumferential direction. The fixing surface 40a on the inner diameter side of the fixing portion 40 is formed in an arc shape so as to be connected to and fixed to the outer diameter of the winding guide 36, and the field winding is where the field winding 12 is wound. The fixed portion 40 has a substantially triangular shape so that the 12 can be arranged, that is, a space is provided between the fixed portions 40.
The thickness t1 of the connecting portion 39 on the support portion 38 side is larger than the thickness t2 of the tip of the connecting portion 39. Further, the thickness t1 on the support portion 38 side is approximately 0.1 to 0.3 mm larger than the gap C between the winding guides 36. Since the thickness of the connecting portion 39 is t1> t2, it is suitable for smoothly releasing the molded product from the mold. Further, when the connecting member 13 is inserted into the gap C of the winding guide 36, it can be smoothly inserted.
Further, since the thickness t1 on the support portion 38 side is approximately 0.1 to 0.3 mm larger than the gap C between the winding guides 36, the end face of the winding guide 36 and the end face 38a of the support portion 38 are formed. Since the winding guide 36 is expanded to the outer diameter side at the time of contact, the outer diameter of the winding guide 36 and the inner surface 40a of the fixing portion 40 are in close contact with each other, and the connecting member 13 can be firmly held.
As a result, the circumferential direction and the radial direction of the winding guide 36 can be firmly restrained. Further, since the end surface of the winding frame 11 in the rotation axis direction and the end surface 38a of the connecting member 13 can be connected and fixed, the rotation axis direction of the winding guide 36 can also be restrained.
In this embodiment, the fixed portion 40 has a substantially triangular shape, but the fixed portion 40 may have a substantially triangular shape as long as it does not interfere with the field winding 12, and the inner surface 40a of the fixed portion 40 may be formed. It suffices if the outer diameters of the winding guides 11 have curvatures that are substantially the same and the connecting member 13 and the winding guides 11 can be brought into close contact with each other.
When the electric blower 200 is operated, an attractive force and a repulsive force are generated in the tooth portion 30 of the stator 7 due to the electromagnetic force generated between the rotor core 6 and the teeth portion 30 of the stator 7, and the teeth are generated as the rotor core 6 rotates. A force that changes periodically is applied to the portion 30. Due to this periodically changing force, the stator core 9 vibrates, and harmonics of the rotation frequency (integer times the rotation frequency) noise is likely to be generated.
In this embodiment, the winding frames 10 and 11 are formed in close contact with the stator core 9, and the connecting member 13 can restrain the radial direction, the circumferential direction, and the rotation axis direction of the winding guide 36. , The vibration of the stator 7 can be suppressed, and the harmonic noise of the rotation frequency can be reduced.
Further, since the connecting member 13 formed by one component is attached to the winding frame 11, the connecting member 13 can be easily attached after assembling the stator 7 (FIG. 4) or after assembling as the electric blower 200. Good assembleability without the need for special production equipment. Therefore, it is possible to suppress the vibration generated from the stator portion with a simple structure and reduce the noise.
Further, since the connecting member 13 is made of a non-magnetic synthetic resin material, it is not affected by the attractive force of the magnet of the rotor core 6, and a low noise electric blower having excellent assembling property can be obtained.

図７は、本発明の接続部材１３の騒音低減効果を示す図で、運転音の周波数分析結果である。横軸は周波数、縦軸は音圧レベルを示しており、実線は本実施例、破線は従来例について示している。従来例では、回転周波数騒音と回転周波数の高調波の騒音が高くなっているが、本実施例の接続部材１３を巻枠１１の巻線ガイド３６に取り付けることで、高調波騒音が大幅に低減していることがわかる。高調波騒音が低くなることで聴感上良好となる。
従来例では、電動送風機２００を運転すると、ステータ７のティース部３０に周期的に変化する電磁加振力よってステータコア９が振動し、ステータコア９に密着して取り付けられている各巻枠１１が振動し騒音が発生していた。しかし、本実施例では、１部品で出来た接続部材１３により各巻枠１１の巻線ガイド３６を周方向と、径方向及び回転軸方向を拘束して一体化することができ、巻線ガイド３６の剛性が高くなり、騒音を低減することができる。特に、回転周波数の高調波騒音を低減することができ、聴感上良好な電動送風機２００を得ることができる。 FIG. 7 is a diagram showing the noise reduction effect of the connecting member 13 of the present invention, and is a frequency analysis result of the driving sound. The horizontal axis shows the frequency, the vertical axis shows the sound pressure level, the solid line shows the present embodiment, and the broken line shows the conventional example. In the conventional example, the rotation frequency noise and the harmonic noise of the rotation frequency are high, but by attaching the connection member 13 of this embodiment to the winding guide 36 of the winding frame 11, the harmonic noise is significantly reduced. You can see that it is doing. By lowering the harmonic noise, the audibility is improved.
In the conventional example, when the electric blower 200 is operated, the stator core 9 vibrates due to the electromagnetic excitation force that periodically changes to the teeth portion 30 of the stator 7, and each winding frame 11 attached in close contact with the stator core 9 vibrates. There was noise. However, in this embodiment, the winding guide 36 of each winding frame 11 can be integrated by restraining the circumferential direction, the radial direction, and the rotation axis direction by the connecting member 13 made of one component. The rigidity of the coil is increased, and noise can be reduced. In particular, the harmonic noise of the rotation frequency can be reduced, and the electric blower 200 having a good audibility can be obtained.

また、分割コア２６に界磁巻線１２を巻いた後に、ステータ７として組立てるが、界磁巻線１２により巻枠ガイド３５、３６は、例えば内径側に変形し、個体差が生じる場合もある。接続部材１３の支持部３８側の連結部３９の厚さｔ１は、巻線ガイド３６同士の隙間Ｃよりもおよそ０.１〜０.３ｍｍ大きくし、連結部３９の先端の厚さｔ２はｔ１＞ｔ２としているため、接続部材１３を巻線ガイド３６に挿入し易く、さらに巻線ガイド３６は外径側に広げられるため、個体差を生じていた場合でも周方向と、半径方向及び回転軸方向を強固に拘束することができる。なお、接続部材１３の固定部４０に接着剤を用いて固定することで、さらに強固に拘束することができ、接続部材１３の抜け防止としても効果を奏することができる。 Further, although the field winding 12 is wound around the split core 26 and then assembled as the stator 7, the winding frame guides 35 and 36 may be deformed to the inner diameter side by the field winding 12, for example, and individual differences may occur. .. The thickness t1 of the connecting portion 39 on the support portion 38 side of the connecting member 13 is approximately 0.1 to 0.3 mm larger than the gap C between the winding guides 36, and the thickness t2 of the tip of the connecting portion 39 is t1. > T2 makes it easy to insert the connecting member 13 into the winding guide 36, and the winding guide 36 is widened to the outer diameter side. Therefore, even if individual differences occur, the circumferential direction, the radial direction, and the rotation axis The direction can be tightly constrained. By fixing the connecting member 13 to the fixing portion 40 with an adhesive, the connecting member 13 can be more firmly restrained, and the connecting member 13 can be effectively prevented from coming off.

以上説明した本実施形態の電動送風機２００によれば、ステータコア９を分割コア２６とすることで、電磁鋼板の材料利用率が向上し、材料費を低減することができる。また、界磁巻線１２を巻く巻線工程が行い易くなり、生産性を高くすることができる。さらに、界磁巻線１２が整然と巻き易くなるため、界磁巻線１２の長さが短くなり、電動送風機２００の効率向上を図ることができる。 According to the electric blower 200 of the present embodiment described above, by using the stator core 9 as the split core 26, the material utilization rate of the electromagnetic steel sheet can be improved and the material cost can be reduced. Further, the winding process for winding the field winding 12 can be easily performed, and the productivity can be increased. Further, since the field winding 12 is easily wound in an orderly manner, the length of the field winding 12 is shortened, and the efficiency of the electric blower 200 can be improved.

また、各分割コア２６にカシメ部２７を設けることで、分割コア２６単体の剛性が向上する。また、各分割コア２６の周方向端部の溝部３２と突起部３３により、分割コア２６同士を強固に連結することができ、溶接等を必要とせずに一体型のステータコア９の剛性を高くすることができる。
さらに、巻枠１０、１１には、それぞれ巻線ガイド３５、３６が形成されており、界磁巻線１２がティース部３０側にはみ出すのを防止し、界磁巻線１２を強い張力で巻くことができ、分割コア２６と巻枠１０、巻枠１１を強く密着させ一体化させることができる。
また、接続部材１３の支持部３８側の連結部３９の厚さｔ１は、巻線ガイド３６同士の隙間Ｃよりもおよそ０.１〜０.３ｍｍ大きく、連結部３９の先端の厚さｔ２は、ｔ１よりも小さくしているため、金型から接続部材１３をスムーズに離型させることができる。
さらに、巻線ガイド３６の隙間Ｃに接続部材１３を挿入するとき円滑に挿入でき、接続部材１３の固定部４０の内面４０ａと巻線ガイド３６の外径が密着し、しっかりと接続部材１３を保持すると共に、巻線ガイド３６の周方向と、半径方向及び回転軸方向を強固に拘束し一体化することができる。このため、巻線ガイド３６の剛性が高くなり、ステータ７からの騒音を低減することができ、特に回転周波数の高調波騒音を低減でき、聴感上良好な電動送風機２００を得ることができる。 Further, by providing the caulking portion 27 in each of the divided cores 26, the rigidity of the divided core 26 alone is improved. Further, the groove portion 32 and the protrusion 33 at the circumferential end of each division core 26 can firmly connect the division cores 26 to each other, and increase the rigidity of the integrated stator core 9 without requiring welding or the like. be able to.
Further, winding guides 35 and 36 are formed on the winding frames 10 and 11, respectively, to prevent the field winding 12 from protruding toward the teeth portion 30 and to wind the field winding 12 with a strong tension. The split core 26, the winding frame 10, and the winding frame 11 can be strongly brought into close contact with each other and integrated.
Further, the thickness t1 of the connecting portion 39 on the support portion 38 side of the connecting member 13 is approximately 0.1 to 0.3 mm larger than the gap C between the winding guides 36, and the thickness t2 of the tip of the connecting portion 39 is Since it is smaller than t1, the connecting member 13 can be smoothly released from the mold.
Further, when the connecting member 13 is inserted into the gap C of the winding guide 36, it can be smoothly inserted, and the inner surface 40a of the fixing portion 40 of the connecting member 13 and the outer diameter of the winding guide 36 are in close contact with each other, so that the connecting member 13 can be firmly inserted. While holding the winding guide 36, the circumferential direction, the radial direction, and the rotation axis direction can be firmly restrained and integrated. Therefore, the rigidity of the winding guide 36 is increased, the noise from the stator 7 can be reduced, the harmonic noise of the rotation frequency can be reduced, and the electric blower 200 having a good audibility can be obtained.

さらに、１部品で成形される接続部材１３を巻枠１１に取り付けるため、ステータ７を組立てた後や、電動送風機２００として組立てた後に接続部材１３を簡単に取り付けることができるため、特別な生産設備を必要とせず組立性が良好である。 Further, since the connecting member 13 formed by one component is attached to the winding frame 11, the connecting member 13 can be easily attached after assembling the stator 7 or as an electric blower 200, which is a special production facility. Good assembleability without the need for.

また、接続部材１３は非磁性の合成樹脂材で製作されているため、磁石による吸引力の影響を受けることが無く、組立性に優れた低騒音の電動送風機を得ることができる。よって、ステータコア９を分割コア２６としても、簡単な構造で巻枠１１の剛性を高くすることができ、ステータ部から発生する振動を抑制し、騒音の低減を図ることができる。 Further, since the connecting member 13 is made of a non-magnetic synthetic resin material, it is not affected by the attractive force of the magnet, and a low noise electric blower having excellent assembling property can be obtained. Therefore, even if the stator core 9 is used as the split core 26, the rigidity of the winding frame 11 can be increased with a simple structure, vibration generated from the stator portion can be suppressed, and noise can be reduced.

次に、接続部材１３の変形例について説明する。図８は他の接続部材４１の外観斜視図である。接続部材４１は、図５に示す接続部材１３の支持部３８を備えていない形状で、各巻線ガイド３６の隙間１ヶ所毎に１個の接続部材を配置するものである。本実施例では、３スロットとしているため、３個の接続部材４１を用い、巻線ガイド３６の周方向と径方向を拘束する。支持部材４１は、略矩形の平板の連結部４２と、連結部４２の側面４２ａに略三角形状の固定部４３が形成されている。
連結部４２の厚さｔ１は、連結部３９の先端の厚さｔ２よりも大きくしている。また、連結部４２の厚さｔ１は、巻線ガイド３６同士の隙間Ｃよりもおよそ０.１〜０.３ｍｍ大きくしている。連結部４２の厚さをｔ１＞ｔ２としているため、金型から成形品をスムーズに離型されるのに好適である。
図８に示す接続部材４１においても、巻線ガイド３６の周方向と径方向の拘束を行うことができ、ステータ７からの騒音を低減でき、特に回転周波数の高調波騒音を低減することができる。 Next, a modified example of the connecting member 13 will be described. FIG. 8 is an external perspective view of the other connecting member 41. The connecting member 41 has a shape that does not include the support portion 38 of the connecting member 13 shown in FIG. 5, and one connecting member is arranged for each gap of each winding guide 36. In this embodiment, since the number of slots is three, three connecting members 41 are used to restrain the circumferential direction and the radial direction of the winding guide 36. The support member 41 has a substantially rectangular flat plate connecting portion 42 and a substantially triangular fixing portion 43 formed on the side surface 42a of the connecting portion 42.
The thickness t1 of the connecting portion 42 is larger than the thickness t2 of the tip of the connecting portion 39. Further, the thickness t1 of the connecting portion 42 is approximately 0.1 to 0.3 mm larger than the gap C between the winding guides 36. Since the thickness of the connecting portion 42 is t1> t2, it is suitable for smoothly releasing the molded product from the mold.
Also in the connecting member 41 shown in FIG. 8, the winding guide 36 can be constrained in the circumferential direction and the radial direction, the noise from the stator 7 can be reduced, and in particular, the harmonic noise of the rotation frequency can be reduced. ..

このような接続部材４１とすることで、接続部材４１の材料費や、質量を低減することができ、さらに接続部材４１を製作する金型を小さくすることができるため、製造コストを安くすることができる。また、巻線ガイド３６の隙間Ｃにばらつきが生じても、最後に挿入する接続部材４１の回転軸方向の押し込み力を適正に設定管理することで、巻線ガイド３６の剛性を一定に制御することができ、ばらつきを小さくすることができる。
次に、巻枠１０側に他の接続部材４４を取り付けた場合について、図９、１０を用い説明する。図９（ａ）は巻枠１０側に接続部材４４を取り付けたステータ７の外観斜視図、（ｂ）は（ａ）に示すステータ７の断面図、図１０（ａ）は接続部材４４の外観斜視図、（ｂ）は接続部材４４の断面図である。図９において、図４に示した最初の実施例形態例で用いるステータ７と同一部分は同一符号で示すので、再度の説明は省略する。
図９に示す接続部材４４は略円筒形状の巻線ガイド３５の内部に配置固定され、巻枠３５を介してステータ７のティース部３０の隙間Ｃを繋ぎ固定するようにしている。接続部材４４は、巻枠１０の形状に合わせ略円錐形状の支持部４５の端面に連結部４６と固定部４７が形成されている。接続部材４４は非磁性の合成樹脂材で、ポリブチレンテレフタレータ樹脂（PBT）、ポリエチレンテレフタレート樹脂（PET）や、それらにガラス繊維が含まれているものなどで一体成形されている。
連結部４６はティース部３０を覆う巻枠３５の隙間Ｃに挿入され、巻枠３５同士を周方向に接続して固定し、固定部４７の内径面で巻枠の径方向を接続して固定する。また、支持部４５で巻枠３５の回転軸方向の固定を行う。
これにより、電磁加振力を受けるティース部３０の周方向と、半径方向及び回転軸方向を強固に拘束することができ、ステータ７からの騒音を低減でき、特に回転周波数の高調波騒音を低減することができる。実施の形態例は、ステータコア９を分割コア２６で製作した場合に、接続部材により少なくとも一方の巻枠同士を強固に接続することを特徴としている。
次に、本発明の他の実施形態例の巻枠について説明する。図１１（ａ）は他の巻枠を用いたときの分割コア２６の断面図、（ｂ）はステータ７の断面図の部分拡大図である。図１１において、図４に示した最初の実施例形態例で用いるステータ７と同一部分は同一符号で示すので、再度の説明は省略する。
図４に示す巻枠１０、１１と図１１に示す巻枠４８、４９の違いについて説明する。図４に示す巻枠１０及び巻枠１１はそれぞれが離れているが、図１１に示すように、本発明の他の実施の形態例の巻枠４８、巻枠４９はステータ７として組立てたときにそれぞれの巻枠同士が繋がれていることが、図４に示す巻枠と異なっている。
巻枠４８の周方向端部には、巻枠４８同士を連結する突起部４８ａ、４８ｂと、他方の端部には嵌合部４８ｃ、４８ｄが設けられている。また、巻枠４９の周方向端部には、巻枠４９同士を連結する突起部４９ａと、他方の端部には嵌合部４９ｂが設けられている。なお、巻枠４８、４９にはそれぞれ巻線ガイド（図示せず）が形成されている。
分割コア２６に巻枠４８、巻枠４９を嵌合し、界磁巻線１２を巻き、その後分割コア２６同士を嵌合することでステータ７を形成する。巻枠４８のヨーク部２８側の突起部４８ａと嵌合部４８ｃ、ティース部３０側の突起部４８ｂと嵌合部４８ｄ及び、巻枠４９の突起部４９ａと嵌合部４９ｂがそれぞれ連結される。
これにより、巻枠４８、４９の周方向と、半径方向を拘束することができ、巻枠４８、４９の剛性、すなわちステータ７の剛性を高くすることができ、ステータ７からの振動、騒音を低減することができる。巻枠４８、４９の巻線ガイド部に本発明の接続部材を取り付けることで、さらにステータ７からの振動、騒音を低減することができ、特に回転周波数の高調波騒音を低減することができる。
なお、本実施形態例では、巻枠４８は突起部４８ａと嵌合部４８ｃ、突起部４８ｂと嵌合部４８ｄの２箇所をそれぞれ連結しているが、これに囚われることはなく、どちらか１箇所だけでも良く、巻枠４８の周方向と半径方向を拘束することができれば良い。 By using such a connecting member 41, the material cost and mass of the connecting member 41 can be reduced, and the mold for manufacturing the connecting member 41 can be reduced, so that the manufacturing cost can be reduced. Can be done. Further, even if the gap C of the winding guide 36 varies, the rigidity of the winding guide 36 is controlled to be constant by appropriately setting and managing the pushing force in the rotation axis direction of the connecting member 41 to be inserted last. It is possible to reduce the variation.
Next, a case where another connecting member 44 is attached to the winding frame 10 side will be described with reference to FIGS. 9 and 10. 9 (a) is an external perspective view of the stator 7 in which the connecting member 44 is attached to the winding frame 10 side, FIG. 9 (b) is a sectional view of the stator 7 shown in (a), and FIG. 10 (a) is an external view of the connecting member 44. A perspective view, (b) is a cross-sectional view of the connecting member 44. In FIG. 9, the same parts as those of the stator 7 used in the first embodiment shown in FIG. 4 are indicated by the same reference numerals, and thus the description thereof will be omitted again.
The connecting member 44 shown in FIG. 9 is arranged and fixed inside the winding guide 35 having a substantially cylindrical shape, and the gap C of the teeth portion 30 of the stator 7 is connected and fixed via the winding frame 35. The connecting member 44 has a connecting portion 46 and a fixing portion 47 formed on the end surface of the support portion 45 having a substantially conical shape in accordance with the shape of the winding frame 10. The connecting member 44 is a non-magnetic synthetic resin material, and is integrally molded with polybutylene terephthalate resin (PBT), polyethylene terephthalate resin (PET), or one containing glass fiber.
The connecting portion 46 is inserted into the gap C of the winding frame 35 covering the teeth portion 30, and the winding frames 35 are connected and fixed in the circumferential direction, and the radial direction of the winding frame is connected and fixed by the inner diameter surface of the fixing portion 47. To do. Further, the support portion 45 fixes the winding frame 35 in the rotation axis direction.
As a result, the circumferential direction of the tooth portion 30 that receives the electromagnetic excitation force, the radial direction, and the rotation axis direction can be firmly restrained, the noise from the stator 7 can be reduced, and in particular, the harmonic noise of the rotation frequency is reduced. can do. An example of the embodiment is characterized in that when the stator core 9 is manufactured by the split core 26, at least one winding frame is firmly connected to each other by a connecting member.
Next, the winding frame of another embodiment of the present invention will be described. FIG. 11A is a cross-sectional view of the split core 26 when another winding frame is used, and FIG. 11B is a partially enlarged view of a cross-sectional view of the stator 7. In FIG. 11, the same parts as those of the stator 7 used in the first embodiment shown in FIG. 4 are indicated by the same reference numerals, and thus the description thereof will be omitted again.
The difference between the winding frames 10 and 11 shown in FIG. 4 and the winding frames 48 and 49 shown in FIG. 11 will be described. Although the winding frame 10 and the winding frame 11 shown in FIG. 4 are separated from each other, as shown in FIG. 11, when the winding frame 48 and the winding frame 49 of another embodiment of the present invention are assembled as a stator 7. It is different from the winding frame shown in FIG. 4 that each winding frame is connected to each other.
Protrusions 48a and 48b for connecting the winding frames 48 to each other are provided at the circumferential end of the winding frame 48, and fitting portions 48c and 48d are provided at the other end. Further, a protrusion 49a for connecting the winding frames 49 to each other is provided at the circumferential end of the winding frame 49, and a fitting portion 49b is provided at the other end. Winding guides (not shown) are formed on the winding frames 48 and 49, respectively.
The winding frame 48 and the winding frame 49 are fitted to the split core 26, the field winding 12 is wound, and then the split cores 26 are fitted to each other to form the stator 7. The protrusion 48a and the fitting portion 48c on the yoke portion 28 side of the winding frame 48, the protrusion 48b and the fitting portion 48d on the teeth portion 30 side, and the protrusion 49a and the fitting portion 49b of the winding frame 49 are connected, respectively. ..
As a result, the circumferential direction and the radial direction of the winding frames 48 and 49 can be constrained, the rigidity of the winding frames 48 and 49, that is, the rigidity of the stator 7 can be increased, and vibration and noise from the stator 7 can be suppressed. It can be reduced. By attaching the connecting member of the present invention to the winding guides of the winding frames 48 and 49, vibration and noise from the stator 7 can be further reduced, and in particular, harmonic noise of the rotation frequency can be reduced.
In the example of the present embodiment, the winding frame 48 connects the protrusion 48a and the fitting portion 48c, and the protrusion 48b and the fitting portion 48d, respectively, but is not bound by this and is not bound by either one. It suffices if only the portion can be constrained in the circumferential direction and the radial direction of the winding frame 48.

本実施例の電動送風機２００を電気掃除機に搭載することで、電気掃除機１００の回転周波数の高調波騒音を低減することができ、聴感上良好な電気掃除機を得ることができる。
なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分りやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部については、他の構成の追加・削除・置換をすることが可能である。 By mounting the electric blower 200 of this embodiment on the vacuum cleaner, it is possible to reduce the harmonic noise of the rotation frequency of the vacuum cleaner 100, and it is possible to obtain a vacuum cleaner having a good audibility.
The present invention is not limited to the above-described examples, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, for a part of the configurations of each embodiment, it is possible to add / delete / replace other configurations.

１ 遠心羽根車
２ ファンケーシング
３ 案内翼
４ 回転軸
５ ハウジング
６ ロータコア
７ ステータ
８ 固定ねじ
９ ステータコア
１０、１１ 巻枠
１２ 界磁巻線
１３ 接続部材
１４、１５ 軸受
１６ ばね
１７ 軸受カバー
１８ バランスリング
１９ スリーブ
２０ ハウジング支持部
２１ ねじ穴
２２ 固定ねじ
２３ ハウジング開口
２４ ハウジング排気口
２５ 冷却フィン
２６ 分割コア
２７ かしめ部
２８ ヨーク部
２９ ポール部
３０ ティース部
３１ スロット部
３２ 溝部
３３ 突起部
３４ 貫通穴
３５、３６ 巻線ガイド
３７ 取付穴
３８、４５ 支持部
３９、４２、４６ 連結部
４０、４３、４７ 固定部
４１ 他の接続部材
４４ その他の接続部材
４８、４９ 他の巻枠
１００ 電気掃除機本体
２００ 電動送風機
２０１ 送風機部
２０２ 電動機部 1 Centrifugal impeller 2 Fan casing 3 Guide blade 4 Rotating shaft 5 Housing 6 Rotor core 7 Stator 8 Fixing screw 9 Stator core 10, 11 Winding frame 12 Field winding 13 Connecting member 14, 15 Bearing 16 Spring 17 Bearing cover 18 Balance ring 19 Sleeve 20 Housing support 21 Screw hole 22 Fixing screw 23 Housing opening 24 Housing exhaust port 25 Cooling fin 26 Divided core 27 Caulking part 28 Yoke part 29 Pole part 30 Teeth part 31 Slot part 32 Groove part 33 Projection part 34 Through hole 35, 36 Winding guide 37 Mounting holes 38, 45 Support parts 39, 42, 46 Connecting parts 40, 43, 47 Fixed parts 41 Other connecting members 44 Other connecting members 48, 49 Other winding frames 100 Electric vacuum cleaner body 200 Electric blower 201 Blower unit 202 Electric motor unit

Claims (5)

ロータコア及びステータコアを備えた電動機と、回転自在に設けられた回転軸と、該回転軸の一端部付近に一体成形される前記ロータコアと、前記回転軸の他端部付近に取り付けられる回転翼と、前記ロータコアと前記回転翼との間の前記回転軸に取り付けられる一対の軸受と、該一対の軸受を保持するハウジングと、前記回転翼を覆うファンケーシングとを備え、
前記ステータコアは同一形状の複数の分割コアを連結することで構成され、
該分割コアには各分割コアを覆う絶縁部材の巻枠が配置され、
前記巻枠には界磁巻線を巻くときの巻線ガイドが形成され、
前記巻線ガイドは複数の巻線ガイドが集まることによって略円筒形状を形成しており、
前記巻線ガイドは前記分割コアに対して前記ファンケーシング側に配置される第一の巻線ガイドと、前記分割コアに対して前記ファンケーシングとは反対側に配置される第二の巻線ガイドがあって、
前記第二の巻線ガイドを形成する複数の巻線ガイド同士の隣り合う隙間を繋ぐ接続部材
を設けたことを特徴とする、電動送風機。
An electric motor having a rotor core and a stator core, a rotating shaft provided rotatably, the rotor core integrally formed near one end of the rotating shaft, and a rotary wing attached near the other end of the rotating shaft. A pair of bearings attached to the rotary shaft between the rotor core and the rotary blade, a housing for holding the pair of bearings, and a fan casing covering the rotary blade are provided.
The stator core is configured by connecting a plurality of divided cores having the same shape.
A winding frame of an insulating member covering each divided core is arranged on the divided core.
A winding guide for winding the field winding is formed on the winding frame.
The winding guide forms a substantially cylindrical shape by gathering a plurality of winding guides.
The winding guides are a first winding guide arranged on the fan casing side with respect to the split core and a second winding guide arranged on the side opposite to the fan casing with respect to the split core. There is
An electric blower characterized by providing a connecting member for connecting adjacent gaps between a plurality of winding guides forming the second winding guide.
前記接続部材は円環状の支持部と、前記支持部の端面から伸びた連結部と、前記連結部の側面に形成された固定部を有し、
前記連結部は前記隣り合う巻線ガイド同士の隙間に挿入され、
前記固定部は前記巻線ガイドの外径と接して前記巻線ガイドを固定することを特徴とする、請求項１に記載の電動送風機。 The connecting member has an annular support portion, a connecting portion extending from an end surface of the supporting portion, and a fixing portion formed on a side surface of the connecting portion.
The connecting portion is inserted into the gap between the adjacent winding guides, and the connecting portion is inserted into the gap between the adjacent winding guides.
The electric blower according to claim 1, wherein the fixing portion is in contact with the outer diameter of the winding guide to fix the winding guide. 前記連結部の前記支持部と接する側の板厚は、前記連結部の先端側の板厚よりも大きくしていることを特徴とする、請求項２に記載の電動送風機。 The electric blower according to claim 2 , wherein the plate thickness on the side of the connecting portion in contact with the support portion is larger than the plate thickness on the tip end side of the connecting portion. 前記支持部側の板厚は、前記巻枠の隙間よりも０.１〜０.３ｍｍ大きいことを特徴とす
る、請求項３に記載の電動送風機。 The electric blower according to claim 3, wherein the plate thickness on the support portion side is 0.1 to 0.3 mm larger than the gap of the winding frame. 請求項１乃至４の何れか１項に記載の電動送風機を搭載した電気掃除機。 An electric vacuum cleaner equipped with the electric blower according to any one of claims 1 to 4.
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