JP2012019569A - Electric motor and electric blower using the same - Google Patents

Electric motor and electric blower using the same Download PDF

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JP2012019569A
JP2012019569A JP2010153991A JP2010153991A JP2012019569A JP 2012019569 A JP2012019569 A JP 2012019569A JP 2010153991 A JP2010153991 A JP 2010153991A JP 2010153991 A JP2010153991 A JP 2010153991A JP 2012019569 A JP2012019569 A JP 2012019569A
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teeth
annular body
electric motor
magnetic member
armature
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Takehiko Yasujima
武彦 安島
Mitsumasa Hamazaki
光将 浜崎
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Mitsubishi Electric Home Appliance Co Ltd
Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an electric motor that can improve manufacturing efficiency by reducing the number of components while maintaining necessary electric insulation in an armature.SOLUTION: An electric motor comprises: an armature core 1 fixed to a shaft 3; a plurality of teeth 2 that are provided on the armature core 1 and protrude radially from the armature core 1 centering the shaft 3; a coil 5 wound around the teeth 2 and disposed in a slot 4 between the teeth 2; and an annular body 6 in which a magnetic member 7 having the same number as that of the teeth 2 is integrated with a resin member 8 by insert molding. The magnetic member 7 is disposed on the same circumference so as to face each of the teeth 2 and its one-side face 7a forms a part of the inner peripheral surface of the annular body 6. Then, the annular body 6 is fixed to the teeth 2 by fitting the one-side face 7a of the magnetic member 7 into the tip face 2a of the teeth 2.

Description

この発明は、電動機と、その電動機を用いた電動送風機とに関するものである。   The present invention relates to an electric motor and an electric blower using the electric motor.

図10は従来の電動機の電機子を示す要部断面図であり、下記特許文献1に記載された電機子の構成を具体的に示したものである。
図10において、14は所定の軸に固定された電機子鉄心、15は電機子鉄心14に設けられた複数のティースである。ティース15は、上記軸の軸長方向に所定の長さを有しており、電機子鉄心14の外周部分から放射状に突出するように形成されている。16は隣接するティース15間に形成された空間からなるスロットである。スロット16には、ティース15に捲回されたコイル17が配置されている。
FIG. 10 is a cross-sectional view of a main part showing an armature of a conventional electric motor, and specifically shows the configuration of the armature described in Patent Document 1 below.
In FIG. 10, 14 is an armature core fixed to a predetermined shaft, and 15 is a plurality of teeth provided on the armature core 14. The teeth 15 have a predetermined length in the axial direction of the shaft, and are formed so as to protrude radially from the outer peripheral portion of the armature core 14. Reference numeral 16 denotes a slot formed of a space formed between adjacent teeth 15. A coil 17 wound around the tooth 15 is disposed in the slot 16.

18は電機子鉄心14やティース15を覆う環状体である。環状体18は、基本的に磁性材料から構成され、スロット16に対向する部分に非磁性改質部18aが設けられている。また、スロット16内には、コイル17と環状体18との電気絶縁を維持するためのウェッジ19が配置されている。   Reference numeral 18 denotes an annular body that covers the armature core 14 and the teeth 15. The annular body 18 is basically made of a magnetic material, and a nonmagnetic modified portion 18 a is provided at a portion facing the slot 16. A wedge 19 for maintaining electrical insulation between the coil 17 and the annular body 18 is disposed in the slot 16.

特開2002−17060号公報JP 2002-17060 A

従来の電動機では、環状体18の磁性材料部分とコイル17との電気絶縁を維持するため、各スロット16内に、絶縁体からなるウェッジ19を配置しなければならなかった。近年、掃除機用電動送風機の電動機では、電機子のスロット16の数が増加する傾向にあり、ウェッジ19の存在により、部品点数が増大し、製造効率が著しく低下するといった問題があった。   In the conventional electric motor, in order to maintain electrical insulation between the magnetic material portion of the annular body 18 and the coil 17, a wedge 19 made of an insulator has to be disposed in each slot 16. In recent years, there has been a problem that the number of the armature slots 16 tends to increase in the electric motor of the electric blower for a vacuum cleaner, and the presence of the wedge 19 increases the number of parts and significantly reduces the manufacturing efficiency.

更に近年、掃除機用電動送風機の電動機には高性能化が要求されており、電流及びトルク等の性能ばらつきの抑制が求められている。コイル17により励磁された磁束は、ティース15を介して磁気回路を形成しているため、それらの形状・寸法についても高精度なものが要求されているが、従来の電動機では、ティース15(電機子鉄心14)に対する環状体18の位置精度が低下し易いといった問題があった。また、電動機の高性能化に伴い電機子の回転高速化も要求されており、電機子の起動時及び停止時の加減速により、環状体18とティース15(電機子鉄心14)との間に相対変位が生じることもあった。   Furthermore, in recent years, there has been a demand for higher performance in electric motors for electric blowers for vacuum cleaners, and suppression of performance variations such as current and torque is required. Since the magnetic flux excited by the coil 17 forms a magnetic circuit through the teeth 15, high precision is required for their shape and dimensions. There has been a problem that the positional accuracy of the annular body 18 with respect to the core 14) tends to be lowered. Further, with the high performance of the motor, it is also required to increase the rotation speed of the armature, and between the annular body 18 and the teeth 15 (the armature core 14) due to acceleration / deceleration when the armature is started and stopped. Relative displacement sometimes occurred.

この発明は、上述のような課題を解決するためになされたもので、その目的は、電機子内の必要な電気絶縁を維持しつつ、部品点数を低減させることで製造効率を向上させることができる電動機と、その電動機を用いた電動送風機とを提供することである。   The present invention has been made to solve the above-described problems, and its object is to improve manufacturing efficiency by reducing the number of parts while maintaining necessary electrical insulation in the armature. An electric motor that can be used, and an electric blower that uses the electric motor.

また、上記電動機及び電動機を用いた電動送風機において、更に、電機子鉄心に対する環状体の位置精度を向上させ、環状体と電機子鉄心との間に発生する相対変位を確実に防止することを目的とする。   Another object of the present invention is to improve the positional accuracy of the annular body with respect to the armature core and reliably prevent the relative displacement generated between the annular body and the armature core in the electric motor and the electric blower using the electric motor. And

この発明に係る電動機は、軸に固定された電機子鉄心と、電機子鉄心に設けられ、電機子鉄心から軸を中心として放射状に突出する複数のティースと、ティースに巻き付けられ、ティース間のスロットに配置されたコイルと、ティースと同数の磁性部材がインサート成形によって樹脂部材と一体化された環状体と、を備え、磁性部材は、各ティースに対向するように同一円周上に配置され、一側面が環状体の内周面の一部を形成し、環状体は、磁性部材の一側面とティースの先端面とのはめ合いによってティースに固定されたものである。   An electric motor according to the present invention includes an armature core fixed to a shaft, a plurality of teeth that are provided on the armature core and project radially from the armature core about the shaft, and are wound around the teeth. And an annular body in which the same number of magnetic members as the teeth are integrated with the resin member by insert molding, and the magnetic members are arranged on the same circumference so as to face each tooth. One side surface forms a part of the inner peripheral surface of the annular body, and the annular body is fixed to the teeth by fitting one side surface of the magnetic member and the tip end surface of the teeth.

また、この発明に係る電動機は、ティースの先端面及び磁性部材の一側面の一方に設けられた凹部と、ティースの先端面及び磁性部材の一側面の他方に設けられ、環状体がティースに固定された際に、凹部内に配置される凸部と、を更に備えたものである。   In addition, the electric motor according to the present invention is provided on one of the tip surface of the tooth and one side surface of the magnetic member, and on the other of the tip surface of the tooth and one side surface of the magnetic member, and the annular body is fixed to the tooth. And a convex portion that is disposed in the concave portion.

この発明に係る電動送風機は、上記発明に係る電動機の何れかを備えたものである。   The electric blower according to the present invention includes any one of the electric motors according to the above invention.

この発明によれば、電動機及び電動機を用いた電動送風機において、電機子内の必要な電気絶縁を維持しつつ、部品点数を低減させることで製造効率を向上させることができるようになる。
更に、電機子鉄心に対する環状体の位置精度を向上させ、環状体と電機子鉄心との間に発生する相対変位を確実に防止することができるようになる。
According to the present invention, in an electric motor and an electric blower using the electric motor, manufacturing efficiency can be improved by reducing the number of parts while maintaining necessary electrical insulation in the armature.
Furthermore, the positional accuracy of the annular body with respect to the armature core can be improved, and the relative displacement generated between the annular body and the armature core can be reliably prevented.

この発明の実施の形態1における電動機の電機子を示す要部断面図である。It is principal part sectional drawing which shows the armature of the electric motor in Embodiment 1 of this invention. 電機子の環状体を示す斜視図である。It is a perspective view which shows the annular body of an armature. 図2に示すA部拡大図である。It is the A section enlarged view shown in FIG. 図2に示す環状体の要部断面図である。It is principal part sectional drawing of the annular body shown in FIG. 環状体の磁性部材を示す斜視図である。It is a perspective view which shows the magnetic member of an annular body. この発明の実施の形態1における電動機の電機子を示す外観図である。It is an external view which shows the armature of the electric motor in Embodiment 1 of this invention. 環状体を装着する前の電機子を示す外観図である。It is an external view which shows the armature before mounting | wearing with an annular body. 環状体を装着する前の電機子を示す要部断面図である。It is principal part sectional drawing which shows the armature before mounting | wearing with an annular body. この発明の実施の形態2における電動機の電機子を示す要部断面図である。It is principal part sectional drawing which shows the armature of the electric motor in Embodiment 2 of this invention. 従来の電動機の電機子を示す要部断面図である。It is principal part sectional drawing which shows the armature of the conventional electric motor.

この発明をより詳細に説明するため、添付の図面に従ってこれを説明する。なお、各図中、同一又は相当する部分には同一の符号を付しており、その重複説明は適宜に簡略化ないし省略する。   In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

実施の形態1.
図1はこの発明の実施の形態1における電動機の電機子を示す要部断面図である。
図1において、1は磁性材料からなる電機子鉄心、2は電機子鉄心1に設けられた複数のティース、3は電機子鉄心1が固定された軸である。ティース2は、軸3の軸長方向に所定の長さを有しており、電機子鉄心1の外周部分から軸3の軸中心を中心として放射状に突出するように形成されている。例えば、この電機子が掃除機用の整流子電動機において利用される場合、電機子鉄心1の外周に、12箇所或いはそれ以上のティース2が等間隔に形成される。なお、図中のD1は、ティース2の外径を示している。即ち、ティース2の先端面2aは、軸3の軸中心を中心とした、D1の1/2倍の半径で描かれる円弧により構成される。
Embodiment 1 FIG.
1 is a cross-sectional view of an essential part showing an armature of an electric motor according to Embodiment 1 of the present invention.
In FIG. 1, 1 is an armature core made of a magnetic material, 2 is a plurality of teeth provided on the armature core 1, and 3 is a shaft on which the armature core 1 is fixed. The teeth 2 have a predetermined length in the axial direction of the shaft 3 and are formed so as to project radially from the outer peripheral portion of the armature core 1 around the axis center of the shaft 3. For example, when this armature is used in a commutator motor for a vacuum cleaner, 12 or more teeth 2 are formed at equal intervals on the outer periphery of the armature core 1. In addition, D1 in a figure has shown the outer diameter of the teeth 2. FIG. That is, the tip end surface 2 a of the tooth 2 is formed by an arc drawn with a radius that is ½ times D1 with the axis center of the shaft 3 as the center.

また、4は隣接するティース2間に形成された空間からなるスロットである。各ティース2には、コイル5が巻き付けられており、ティース2に捲回されたコイル5の要部は、上記スロット4内に配置されている。   Reference numeral 4 denotes a slot formed of a space formed between adjacent teeth 2. A coil 5 is wound around each tooth 2, and a main part of the coil 5 wound around the tooth 2 is disposed in the slot 4.

6は電機子鉄心1やティース2を軸3の軸長方向に渡って覆う環状体である。以下に、図2乃至図5も参照し、環状体6の構成及び製造方法について、具体的に説明する。図2は電機子の環状体を示す斜視図、図3は図2に示すA部拡大図、図4は図2に示す環状体の要部断面図、図5は環状体の磁性部材を示す斜視図である。   Reference numeral 6 denotes an annular body that covers the armature core 1 and the teeth 2 in the axial direction of the shaft 3. Hereinafter, the configuration and manufacturing method of the annular body 6 will be specifically described with reference to FIGS. 2 is a perspective view showing an annular body of an armature, FIG. 3 is an enlarged view of a portion A shown in FIG. 2, FIG. 4 is a cross-sectional view of a main part of the annular body shown in FIG. It is a perspective view.

環状体6は、所定の長さL1を有する外径D2の環状(全体として筒状)を呈している。環状体6は、ティース2と同数の磁性部材7と、電気絶縁性及び耐熱性に優れた所定の樹脂からなる樹脂部材8とにより、その要部が構成される。   The annular body 6 has an annular shape (as a whole, a cylinder) having an outer diameter D2 having a predetermined length L1. The main part of the annular body 6 is constituted by the same number of magnetic members 7 as the teeth 2 and a resin member 8 made of a predetermined resin excellent in electrical insulation and heat resistance.

磁性部材7は、インサート成形によって樹脂部材8と一体化されており、各ティース2に外側から対向するように、同一円周上に等間隔に配置されている。具体的に、磁性部材7は、図5に示すような、断面略T字状を呈する長さL2(<L1)の棒状部材からなる。7aは上記T字の底面側を形成する磁性部材7の一側面、7bは上記T字の上面側を形成する磁性部材7の他側面である。磁性部材7の一側面7aは、ティース2の外径D1を成す円弧と同心で、且つ、D1の1/2倍の半径で描かれる円弧により構成される。この一側面7aは、その幅(環状体6の円周方向の幅)が、ティース2の先端面2aの幅と略同じになるように形成されている。また、磁性部材7の他側面7bは、軸3の軸中心を中心とした、D2の1/2倍の半径で描かれる円弧により構成される。他側面7bは、その幅が、軸3の軸長方向に渡り、上記一側面7aの幅よりも大きく形成されている。   The magnetic member 7 is integrated with the resin member 8 by insert molding, and is disposed at equal intervals on the same circumference so as to face each tooth 2 from the outside. Specifically, the magnetic member 7 is a rod-shaped member having a length L2 (<L1) having a substantially T-shaped cross section as shown in FIG. 7a is one side surface of the magnetic member 7 forming the bottom surface side of the T-shape, and 7b is the other side surface of the magnetic member 7 forming the top surface side of the T-shape. One side surface 7a of the magnetic member 7 is configured by an arc drawn concentrically with an arc that forms the outer diameter D1 of the tooth 2 and having a radius that is ½ times D1. The one side surface 7 a is formed so that its width (width in the circumferential direction of the annular body 6) is substantially the same as the width of the tip end surface 2 a of the tooth 2. Further, the other side surface 7 b of the magnetic member 7 is configured by an arc drawn with a radius that is ½ times D2 with the axis center of the shaft 3 as the center. The width of the other side surface 7b is larger than the width of the one side surface 7a in the axial length direction of the shaft 3.

このような形状の磁性部材7は、例えば、0.2乃至0.5mmの薄板電磁鋼板を所定枚数積み重ね、それぞれを溶接或いはカシメ等によって固定・積層することにより、構成することができる。また、所定の磁性材料をスラスト方向に所定の厚さL2に機械加工することにより、磁性部材7を一部材で構成しても良い。   The magnetic member 7 having such a shape can be configured, for example, by stacking a predetermined number of thin electromagnetic steel plates having a thickness of 0.2 to 0.5 mm, and fixing and stacking each by welding or caulking. Further, the magnetic member 7 may be constituted by a single member by machining a predetermined magnetic material in the thrust direction to a predetermined thickness L2.

そして、上記構成の磁性部材7をティース2と同数だけ用意して同一円周上に等間隔に配置し、樹脂部材8をインサート成形によって組み合わせ、環状体6を完成させる。この時、磁性部材7の一側面7a全体を環状体6の内側に、他側面7b全体を外側に露出させ、環状体6の内周面の一部を一側面7aにより、環状体6の外周面の一部を他側面7bにより形成する。また、磁性部材7の表面のうち、一側面7a及び他側面7bを除く全ての面を樹脂部材8で覆い、磁性部材7を樹脂部材8に強固に固定して、且つ磁束の漏洩を防止する。例えば、環状体6の長さL1を磁性部材7の長さL2よりも0.5乃至5mm程度大きくすることにより、磁性部材7の両端面も樹脂部材8によって完全に覆う。
以上により、直径D1の内周面と、内周面と同心で直径D2の外周面とを有する環状体6が形成される。
Then, the same number of magnetic members 7 having the above configuration as the teeth 2 are prepared, arranged at equal intervals on the same circumference, and the resin members 8 are combined by insert molding to complete the annular body 6. At this time, the entire one side surface 7a of the magnetic member 7 is exposed to the inside of the annular body 6 and the entire other side surface 7b is exposed to the outside, and a part of the inner circumferential surface of the annular body 6 is A part of the surface is formed by the other side surface 7b. Further, the entire surface of the magnetic member 7 except the one side surface 7a and the other side surface 7b is covered with the resin member 8, and the magnetic member 7 is firmly fixed to the resin member 8 and magnetic flux leakage is prevented. . For example, by making the length L 1 of the annular body 6 about 0.5 to 5 mm larger than the length L 2 of the magnetic member 7, both end surfaces of the magnetic member 7 are completely covered with the resin member 8.
As described above, the annular body 6 having the inner peripheral surface with the diameter D1 and the outer peripheral surface with the diameter D2 concentric with the inner peripheral surface is formed.

次に、図6乃至図8も参照し、電機子の製造方法について具体的に説明する。
図6はこの発明の実施の形態1における電動機の電機子を示す外観図、図7は環状体を装着する前の電機子を示す外観図、図8はその要部断面図である。図中、9は軸3を支持する軸受、10は絶縁部材、11は絶縁紙、12は整流子である。
Next, the armature manufacturing method will be specifically described with reference to FIGS.
6 is an external view showing the armature of the electric motor according to Embodiment 1 of the present invention, FIG. 7 is an external view showing the armature before the annular body is mounted, and FIG. In the figure, 9 is a bearing that supports the shaft 3, 10 is an insulating member, 11 is insulating paper, and 12 is a commutator.

電機子の製造においては、先ず、軸3を電機子鉄心1に密嵌して固定し、電気絶縁のための部材を設置する。具体的に、電機子鉄心1を軸長方向から挟み込むように、電機子鉄心1の両側から2つの絶縁部材10を配置する。なお、絶縁部材10は、電機子鉄心1及びコイル5間の電気絶縁を維持するための端板部と、軸3及びコイル5間の電気絶縁を維持するためのパイプ部とから構成される。また、スロット4内にティース2の側面に沿うように絶縁紙11を断面U字状に配置し、電機子鉄心1及びコイル5間の電気絶縁を維持する。   In manufacturing the armature, first, the shaft 3 is tightly fitted and fixed to the armature core 1, and a member for electrical insulation is installed. Specifically, the two insulating members 10 are arranged from both sides of the armature core 1 so as to sandwich the armature core 1 from the axial direction. The insulating member 10 includes an end plate portion for maintaining electrical insulation between the armature core 1 and the coil 5 and a pipe portion for maintaining electrical insulation between the shaft 3 and the coil 5. In addition, an insulating paper 11 is arranged in a U-shaped cross section along the side surface of the tooth 2 in the slot 4 to maintain electrical insulation between the armature core 1 and the coil 5.

次に、コイル5をティース2に巻き付けてスロット4内に配置する。また、環状体6をティース2に密嵌させて、環状体6をティース2(電機子鉄心1)に強固に固定する。この時、磁性部材7の各一側面7aがティース2の各先端面2aに接触し、且つ上記一側面7aの幅が先端面2aの幅に一致するように環状体6の位置を合わせ、軸3の軸長方向に環状体6を押し込む。これにより、環状体6は、各磁性部材7の一側面7aと各ティース2の先端面2aとのはめ合いによってティース2(電機子鉄心1)に固定され、図1に示す断面を有する電機子が完成する。   Next, the coil 5 is wound around the tooth 2 and disposed in the slot 4. Further, the annular body 6 is tightly fitted to the teeth 2, and the annular body 6 is firmly fixed to the teeth 2 (armature core 1). At this time, the annular body 6 is aligned so that each one side surface 7a of the magnetic member 7 is in contact with each tip surface 2a of the tooth 2 and the width of the one side surface 7a matches the width of the tip surface 2a. 3 to push the annular body 6 in the axial direction. Thereby, the annular body 6 is fixed to the tooth 2 (armature core 1) by fitting the one side surface 7a of each magnetic member 7 and the tip end surface 2a of each tooth 2, and the armature having the cross section shown in FIG. Is completed.

上記構成の電機子を備えた電動機であれば、電機子内の必要な電気絶縁を維持しつつ、部品点数を低減させることで製造効率を向上させることができる。このため、このような電動機を採用することは、スロット4の数が増加傾向にある掃除機用電動送風機において、特に有効な手段となり得る。なお、掃除機用電動送風機では電機子の回転高速化が進んでいるが、インサート成形によって磁性部材7の保持強度が十分に確保されているため、環状体6が電機子の回転によって破壊される恐れもない。   If it is an electric motor provided with the armature of the said structure, manufacturing efficiency can be improved by reducing a number of parts, maintaining required electrical insulation in an armature. For this reason, adopting such an electric motor can be a particularly effective means in an electric fan for a vacuum cleaner in which the number of slots 4 tends to increase. In addition, although the rotational speed of the armature is increasing in the electric blower for a vacuum cleaner, the holding strength of the magnetic member 7 is sufficiently secured by insert molding, so the annular body 6 is destroyed by the rotation of the armature. There is no fear.

実施の形態2.
図9はこの発明の実施の形態1における電動機の電機子を示す要部断面図である。
本実施の形態における電動機の電機子には、ティース2(電機子鉄心1)に対する環状体6の位置を決定するための嵌合部が備えられている。その他の構成は、実施の形態1に示すものと同様である。
Embodiment 2. FIG.
FIG. 9 is a cross-sectional view of a main part showing the armature of the electric motor according to Embodiment 1 of the present invention.
The armature of the motor in the present embodiment is provided with a fitting portion for determining the position of the annular body 6 with respect to the tooth 2 (armature core 1). Other configurations are the same as those shown in the first embodiment.

上記嵌合部は、例えば、ティース2に設けられた凹部13aと、環状体6に設けられた凸部13bとにより構成される。具体的に、凹部13aは、ティース2の先端面2aに形成された半円状の窪みからなる。また、凸部13bは、磁性部材7の一側面7aに形成された半円状の突出体からなり、環状体6がティース2に適切に固定された際に、凹部13a内に配置されるように形成されている。   The fitting portion includes, for example, a concave portion 13 a provided in the tooth 2 and a convex portion 13 b provided in the annular body 6. Specifically, the concave portion 13 a is formed of a semicircular depression formed in the distal end surface 2 a of the tooth 2. Moreover, the convex part 13b consists of a semicircle-shaped protrusion formed in the one side surface 7a of the magnetic member 7, and when the annular body 6 is appropriately fixed to the teeth 2, it is arranged in the concave part 13a. Is formed.

なお、上記嵌合部は、対になっているティース2及び磁性部材7のうち、その一部に設けられていても良いし、全てに設けられていても良い。また、凹部13aを磁性部材7の一側面7aに形成し、凸部13bをティース2の先端面2aに形成しても良い。   In addition, the said fitting part may be provided in the one part among the teeth 2 and the magnetic member 7 which are paired, and may be provided in all. Further, the concave portion 13 a may be formed on one side surface 7 a of the magnetic member 7, and the convex portion 13 b may be formed on the distal end surface 2 a of the tooth 2.

上記形状の磁性部材7は、実施の形態1の場合と同様に、例えば、0.2乃至0.5mmの薄板電磁鋼板を所定枚数積層したり、所定の磁性材料を機械加工したりすることによって構成される。そして、上記構成の磁性部材7をティース2と同数だけ用意して同一円周上に等間隔に配置し、樹脂部材8をインサート成形によって組み合わせて、環状体6を完成させる。   As in the case of the first embodiment, the magnetic member 7 having the above shape is formed by, for example, laminating a predetermined number of thin magnetic steel sheets of 0.2 to 0.5 mm or machining a predetermined magnetic material. Composed. Then, the same number of magnetic members 7 as described above are prepared as the teeth 2 and arranged on the same circumference at equal intervals, and the resin members 8 are combined by insert molding to complete the annular body 6.

また、電機子の製造に際しては、軸3を電機子鉄心1に密嵌して固定した後、絶縁部材10や絶縁紙11を適切に配置して、所定の電気絶縁を確保する。また、コイル5をティース2に巻き付けてスロット4内に配置し、更に、環状体6をティース2に密嵌させて、環状体6をティース2(電機子鉄心1)に強固に固定する。この時、上記嵌合部の位置を基準に環状体6のラジアル方向の位置を定めるとともに、磁性部材7の各一側面7aがティース2の各先端面2aに接触し、且つ、(嵌合部が複数ある場合は、全ての)凸部13bが凹部13a内に配置されるように、環状体6を軸3の軸長方向に押し込み、環状体6をティース2(電機子鉄心1)に密嵌させる。   In manufacturing the armature, the shaft 3 is tightly fitted and fixed to the armature core 1, and then the insulating member 10 and the insulating paper 11 are appropriately disposed to ensure predetermined electrical insulation. Further, the coil 5 is wound around the tooth 2 and disposed in the slot 4, and the annular body 6 is closely fitted to the tooth 2, so that the annular body 6 is firmly fixed to the tooth 2 (armature core 1). At this time, the position of the annular body 6 in the radial direction is determined on the basis of the position of the fitting portion, each side surface 7a of the magnetic member 7 is in contact with each tip surface 2a of the tooth 2, and (fitting portion When there are a plurality of the annular bodies 6, the annular body 6 is pushed in the axial length direction of the shaft 3 so that all the convex portions 13 b are arranged in the recessed portions 13 a, and the annular body 6 is tightly attached to the teeth 2 (armature core 1) Fit.

上記構成の電機子では、上記嵌合部の位置を基準に環状体6のラジアル方向の位置を定めることができる。また、環状体6の位置がずれている場合は、凸部13bが凹部13a内に収容されず、環状体6をティース2(電機子鉄心1)に装着させることができない。このため、上記構成の電機子を備えた電動機であれば、ティース2(電機子鉄心1)に対する環状体6の位置精度を確実に向上させることができる。また、上記嵌合部により、環状体6の円周方向に対する保持強度を十分に確保することができ、電機子の起動時及び停止時等に、環状体6と電機子鉄心1との間に相対変位が発生する恐れもない。
なお、その他の効果は実施の形態1と同様であり、本電動機は、掃除機用電動送風機において特に有効な手段となり得る。
In the armature having the above configuration, the radial position of the annular body 6 can be determined based on the position of the fitting portion. Moreover, when the position of the annular body 6 has shifted | deviated, the convex part 13b is not accommodated in the recessed part 13a, and the annular body 6 cannot be attached to the teeth 2 (armature core 1). For this reason, if it is an electric motor provided with the armature of the said structure, the positional accuracy of the annular body 6 with respect to the teeth 2 (armature core 1) can be improved reliably. Further, the fitting portion can sufficiently secure the holding strength in the circumferential direction of the annular body 6, and between the annular body 6 and the armature core 1 when the armature is started and stopped. There is no risk of relative displacement.
The other effects are the same as those in the first embodiment, and the present electric motor can be a particularly effective means in the electric fan for a vacuum cleaner.

1、14 電機子鉄心
2、15 ティース
2a 先端面
3 軸
4、16 スロット
5、17 コイル
6、18 環状体
7 磁性部材
7a 一側面
7b 他側面
8 樹脂部材
9 軸受
10 絶縁部材
11 絶縁紙
12 整流子
13a 凹部
13b 凸部
18a 非磁性改質部
19 ウェッジ
DESCRIPTION OF SYMBOLS 1,14 Armature core 2,15 Teeth 2a Tip surface 3 Axis 4,16 Slot 5,17 Coil 6,18 Annular body 7 Magnetic member 7a One side 7b Other side 8 Resin member 9 Bearing 10 Insulating member 11 Insulating paper 12 Rectification Child 13a Concave part 13b Convex part 18a Nonmagnetic modified part 19 Wedge

Claims (6)

軸に固定された電機子鉄心と、
前記電機子鉄心に設けられ、前記電機子鉄心から前記軸を中心として放射状に突出する複数のティースと、
前記ティースに巻き付けられ、前記ティース間のスロットに配置されたコイルと、
前記ティースと同数の磁性部材がインサート成形によって樹脂部材と一体化された環状体と、
を備え、
前記磁性部材は、前記各ティースに対向するように同一円周上に配置され、一側面が前記環状体の内周面の一部を形成し、
前記環状体は、前記磁性部材の前記一側面と前記ティースの先端面とのはめ合いによって前記ティースに固定された
ことを特徴とする電動機。
An armature core fixed to the shaft;
A plurality of teeth provided on the armature core and projecting radially from the armature core about the axis;
A coil wound around the teeth and disposed in a slot between the teeth;
An annular body in which the same number of magnetic members as the teeth are integrated with a resin member by insert molding,
With
The magnetic member is disposed on the same circumference so as to face each of the teeth, and one side surface forms a part of the inner circumferential surface of the annular body,
The electric motor according to claim 1, wherein the annular body is fixed to the teeth by fitting the one side surface of the magnetic member and a tip end surface of the tooth.
前記ティースの前記先端面及び前記磁性部材の前記一側面の一方に設けられた凹部と、
前記ティースの前記先端面及び前記磁性部材の前記一側面の他方に設けられ、前記環状体が前記ティースに固定された際に、前記凹部内に配置される凸部と、
を備えたことを特徴とする請求項1に記載の電動機。
A recess provided on one of the tip surface of the teeth and the one side surface of the magnetic member;
A convex portion that is provided on the other of the tip surface of the tooth and the one side surface of the magnetic member, and is disposed in the concave portion when the annular body is fixed to the tooth;
The electric motor according to claim 1, further comprising:
前記磁性部材の前記一側面は、前記環状体の円周方向の幅が、前記軸の軸長方向に渡って前記ティースの前記先端面の幅に一致するように配置されたことを特徴とする請求項1又は請求項2に記載の電動機。   The one side surface of the magnetic member is arranged such that a circumferential width of the annular body coincides with a width of the tip end surface of the teeth over an axial length direction of the shaft. The electric motor according to claim 1 or claim 2. 前記磁性部材は、他側面が前記環状体の外周面の一部を形成し、前記一側面及び前記他側面以外の面全体が、前記樹脂部材によって覆われたことを特徴とする請求項1から請求項3の何れかに記載の電動機。   2. The magnetic member according to claim 1, wherein the other side surface forms a part of the outer peripheral surface of the annular body, and the entire surface other than the one side surface and the other side surface is covered with the resin member. The electric motor according to claim 3. 前記磁性部材は、前記環状体の円周方向の幅が、前記一側面よりも前記他側面の方が大きいことを特徴する請求項4に記載の電動機。   5. The electric motor according to claim 4, wherein the magnetic member has a circumferential width of the annular body that is larger on the other side than on the one side. 請求項1から請求項5の何れかに記載の電動機を備えたことを特徴とする電動送風機。   An electric blower comprising the electric motor according to any one of claims 1 to 5.
JP2010153991A 2010-07-06 2010-07-06 Electric motor and electric blower using the same Pending JP2012019569A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111431318A (en) * 2015-08-03 2020-07-17 Lg伊诺特有限公司 Electric machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111431318A (en) * 2015-08-03 2020-07-17 Lg伊诺特有限公司 Electric machine

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