JP4498358B2 - Electric motor and electric blower provided with the same - Google Patents

Electric motor and electric blower provided with the same Download PDF

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JP4498358B2
JP4498358B2 JP2006531213A JP2006531213A JP4498358B2 JP 4498358 B2 JP4498358 B2 JP 4498358B2 JP 2006531213 A JP2006531213 A JP 2006531213A JP 2006531213 A JP2006531213 A JP 2006531213A JP 4498358 B2 JP4498358 B2 JP 4498358B2
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slot
iron core
insulator
shaft
insulating portion
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JPWO2006025105A1 (en
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武彦 安島
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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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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/32—Windings characterised by the shape, form or construction of the insulation
    • H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
    • H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/26—Rotor cores with slots for windings
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

本発明は電動機及び電動機を備えた電動送風機に係り、特に電動機用電機子の絶縁構造の改良に関する。   The present invention relates to an electric motor and an electric blower including the electric motor, and more particularly to an improvement in an insulating structure of an armature for an electric motor.

従来の電動機用電機子として、例えば次のようなものがある。すなわち、回転中心となる軸に鉄心及び整流子が圧入されて固定され、鉄心にはその外周面に形成されたスロットに電線が巻回されている。また、軸には電線と鉄心の端面及び回転用軸との絶縁を維持するための絶縁端板も圧入されている。この場合、鉄心、整流子及び絶縁端板の内径は、軸の外径より大きく、かつ軸の表面上に筋状に設けられたナールを含めた軸外径より小さく形成されている。そして、鉄心、整流子及び絶縁端板が軸に圧入される際、それらの内周面がナールを押圧しながら挿入される。そのため、軸の外径及び圧入部品の内径の寸法ばらつきにかかわりなく、鉄心、整流子及び絶縁端板は、軸に対して安定した圧入加圧と保持力が保証されることになっている。   Examples of conventional armatures for electric motors include the following. That is, an iron core and a commutator are press-fitted and fixed to a shaft serving as a rotation center, and an electric wire is wound around a slot formed on the outer peripheral surface of the iron core. In addition, an insulating end plate for maintaining insulation between the electric wire, the end face of the iron core, and the rotating shaft is also press-fitted into the shaft. In this case, the inner diameters of the iron core, the commutator and the insulating end plate are formed to be larger than the outer diameter of the shaft and smaller than the outer diameter of the shaft including a knurled line on the surface of the shaft. And when an iron core, a commutator, and an insulating end plate are press-fitted into the shaft, their inner peripheral surfaces are inserted while pressing the knurled. For this reason, the iron core, commutator, and insulating end plate are guaranteed to have a stable press-fitting and holding force with respect to the shaft, regardless of variations in the outer diameter of the shaft and the inner diameter of the press-fitting parts.

上記のように形成された電動機用電機子においては、スロットに巻回された電線と鉄心の端面及び軸との絶縁を維持するための絶縁端板と、スロットに挿入されて電線と鉄心との絶縁を維持するスロット絶縁体により絶縁が図られている。絶縁端板にはスロット形状に対応した開口部（又は切欠部）が形成されており、その開口部がスロット位置に来るようにして、絶縁端板が鉄心の両端面に隣接するよう軸に圧入されている。一方、スロット絶縁体は鉄心の幅と略同一長に加工されて、各スロットに挿入されている。   In the armature for an electric motor formed as described above, an insulating end plate for maintaining insulation between the electric wire wound in the slot and the end face and shaft of the iron core, and the electric wire and the iron core inserted into the slot Insulation is achieved by a slot insulator that maintains the insulation. The insulating end plate is formed with an opening (or notch) corresponding to the slot shape, and the opening is pressed into the shaft so that the insulating end plate is adjacent to both end faces of the iron core so that the opening is located at the slot position. Has been. On the other hand, the slot insulator is processed to have substantially the same length as the width of the iron core and is inserted into each slot.

スロット絶縁体のスロットへの挿入は、一般的に以下の工程に記すように自動化されている。まず、例えば展開幅がスロットの内面幅とほぼ同一であるロール状のフィルム材を、自動挿入機に送入する。次に、送入されたフィルム材を鉄心とほぼ同一の長さに切断する。次に、幅方向中心を略スロットの形状になるよう折り曲げる。そして、鉄心のスロット数に応じてスロット位置を角度で割り出した後、折り曲げたフィルム材をスロットに挿入する。   Insertion of the slot insulator into the slot is generally automated as described in the following steps. First, for example, a roll-shaped film material whose development width is substantially the same as the inner surface width of the slot is fed into an automatic insertion machine. Next, the fed film material is cut into approximately the same length as the iron core. Next, the width direction center is bent so as to have a substantially slot shape. Then, after the slot position is indexed according to the number of slots in the iron core, the folded film material is inserted into the slot.

上記スロット絶縁に関連して、巻線時のテンションによりスロット内に挿入されたスロット絶縁体が軸方向に移動し、絶縁が不十分になることを防ぐため、２つの絶縁端板の少なくとも一方の開口部周縁に、スロット絶縁体の端部を当接させるという技術が知られている（例えば特許文献１参照）。
特開平１０−２４３５９４号公報 In relation to the slot insulation, in order to prevent the slot insulator inserted into the slot from moving in the axial direction due to the tension during winding and insufficient insulation, at least one of the two insulating end plates A technique is known in which the end of a slot insulator is brought into contact with the periphery of the opening (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-243594

通常、スロットは鉄心の外周面に１２〜２２ヶ所形成されている。このため、上記のような従来の構成では、鉄心とほぼ同一の長さに切断されたフィルム材を、幅方向中心が略スロット形状になるよう折り曲げ、スロット位置を割り出し、スロットへ挿入するという工程を高速で行う必要がある。しかしながら、そのような工程を高速で行うと、スロット絶縁体の寸法ばらつきや挿入ミスが発生しやすくなるという問題があった。   Usually, 12 to 22 slots are formed on the outer peripheral surface of the iron core. For this reason, in the conventional configuration as described above, the film material cut to substantially the same length as the iron core is bent so that the center in the width direction has a substantially slot shape, and the slot position is determined and inserted into the slot. Need to be done at high speed. However, when such a process is performed at high speed, there has been a problem that the dimensional variation of the slot insulator and the insertion error are likely to occur.

また、鉄心材料は鉄損性能が優れた材質ほど硬度が高い傾向にあるため、鉄心硬度も高出力用電動機用と低コスト電動機用で相違がある。鉄心を軸に圧入する際には、鉄心内周面がナールを倒しながら挿入していることから、鉄心圧入後における残存ナールの高さは、鉄心硬度により相違が生じている。   In addition, since iron core materials tend to have higher hardness as materials with better iron loss performance, iron core hardness also differs between high-power motors and low-cost motors. When press-fitting the iron core around the shaft, the inner peripheral surface of the iron core is inserted while tilting the knurl, so that the height of the remaining knurl after the iron core press-fit varies depending on the iron core hardness.

上記理由により、鉄心圧入以後のナールを含めた軸径が一定でないため、鉄心圧入以後の工程で軸に圧入しなくてはならない絶縁端板は、圧入保持力に大きなバラツキが発生し、巻線前に回転移動し、場合によっては軸から容易に外れてしまう恐れもある。そして、このような状況が巻線不良を発生させ、生産効率を低減させる一因となっている。   For the above reasons, since the shaft diameter including the knurled core is not constant, the insulation end plate that must be press-fitted into the shaft after the core press-fitting has a large variation in the press-fit holding force, and the winding There is also a risk that it will rotate forward and easily disengage from the shaft. Such a situation causes a winding failure and contributes to a reduction in production efficiency.

さらに、端板絶縁とスロット絶縁部との間に隙間がある電動機が、送風用ファン、整流子、カーボン刷子を備えた電動送風機に用いられた場合、吸気口から流入した気流により、磨耗したカーボン刷子紛が乱流し、上記隙間から絶縁破壊を誘発する可能性がある。   Furthermore, when an electric motor with a gap between the end plate insulation and the slot insulation is used in an electric blower equipped with a fan for blowing, a commutator, and a carbon brush, the carbon worn by the airflow flowing from the air inlet There is a possibility that the brush powder may flow turbulently and induce dielectric breakdown from the gap.

本発明は上記課題を解決するためになされたものであり、電機子の組立性及び絶縁の信頼性を向上させた電動機並びにその電動機を備えた送風機を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electric motor in which the assembly of an armature and the reliability of insulation are improved, and a blower including the electric motor.

本発明の電動機は、対向する端面間に軸が貫通し前記端面間の外周部に軸方向に沿う複数のスロットが形成された鉄心と、前記軸に挿入されて鉄心の一方の端面に隣接配置された端面絶縁部と該端面絶縁部の周囲から延長され前記複数のスロットに一つ置き又は複数カ所置きに挿入されたスロット絶縁部とが一体に形成された第一絶縁体と、前記軸に挿入されて鉄心の他方の端面に隣接配置された端面絶縁部と該端面絶縁部の周囲から延長され第一絶縁体のスロット絶縁部の挿入による空きスロットに挿入されたスロット絶縁部とが一体に形成された第二絶縁体と、複数のスロットに挿入された前記スロット絶縁部を介して鉄心に巻回された電線とを備えた電機子を有し、第一絶縁体及び第二絶縁体の各スロット絶縁部を、鉄心の端面間幅とほぼ同じ長さにしたことを特徴とする。
また、本発明の電動送風機は、上記の電動機と該電動機により駆動されるファンとを有してなることを特徴とする。 An electric motor according to the present invention includes an iron core in which a shaft passes between opposed end surfaces and a plurality of slots are formed along an axial direction in an outer peripheral portion between the end surfaces, and is disposed adjacent to one end surface of the iron core inserted into the shaft. a first insulator end surface insulating portion and the end surface extended from the periphery of the insulating portion every other prior Symbol plurality of slots or a slot insulating portion inserted every several locations and are formed integrally, which is the An end surface insulating portion that is inserted into the shaft and is disposed adjacent to the other end surface of the iron core, and a slot insulating portion that extends from the periphery of the end surface insulating portion and is inserted into the empty slot by inserting the slot insulating portion of the first insulator. the second insulating and body, has an armature and a wire wound around the core via the slot insulating portion inserted into a plurality of slots, the first insulator and a second insulator formed integrally Each slot insulation part of the body and the width between the end faces of the iron core URN is characterized in that the same length.
Moreover, the electric blower of this invention has said electric motor and the fan driven by this electric motor, It is characterized by the above-mentioned.

本発明の電動機は、第一絶縁体及び第二絶縁体の各スロット絶縁部を鉄心の端面間幅とほぼ同じ長さとし、第一絶縁体のスロット絶縁部と第二絶縁体のスロット絶縁部とが鉄心の複数のスロットに交互に挿入されている。これにより、電機子を含む電動機の組立性及び絶縁の信頼性が向上し、また、第一絶縁体及び第二絶縁体が同形状であるため、部品の共通化を図れ、部品のコストを削減できる。
また、本発明の電動送風機は、上記の電動機をファンの駆動源としたので、送風機の信頼性と寿命が向上する。 In the electric motor of the present invention, each of the slot insulators of the first insulator and the second insulator has substantially the same length as the width between the end faces of the iron core, and the slot insulator of the first insulator and the slot insulator of the second insulator Are alternately inserted into a plurality of slots of the iron core. This improves the assembly and insulation reliability of the motor including the armature, and the first insulator and the second insulator have the same shape, so the parts can be shared and the cost of the parts can be reduced. I can .
Moreover, since the electric blower of the present invention uses the electric motor as a drive source of the fan, the reliability and life of the blower are improved.

実施形態１に係る絶縁体装着前及び巻線加工前の電機子外観図。FIG. 3 is an external view of an armature before mounting an insulator and before winding processing according to the first embodiment. 実施形態１に係る絶縁体装着後及び巻線加工後の電機子外観図。FIG. 3 is an external view of an armature after mounting an insulator according to Embodiment 1 and after winding processing. 図１の電機子における軸と鉄心との固定方法を示す説明図であって、（ａ）は軸の断面図、（ｂ）は軸及び軸に圧入された鉄心の正面図。It is explanatory drawing which shows the fixing method of the axis | shaft and iron core in the armature of FIG. 1, Comprising: (a) is sectional drawing of an axis | shaft, (b) is a front view of the iron core press-fitted in the axis | shaft. 鉄心、絶縁体及び巻線の配置関係を示す鉄心の部分断面図。The fragmentary sectional view of the iron core which shows the arrangement | positioning relationship of an iron core, an insulator, and a coil | winding. 本発明の実施形態に係る電動機の一例を示す外観図。The external view which shows an example of the electric motor which concerns on embodiment of this invention. 実施形態２に係る絶縁体装着前及び巻線加工前の電機子外観図。The armature external view before the insulator installation which concerns on Embodiment 2, and coil | winding processing. 実施形態３に係る絶縁体装着前及び巻線加工前の電機子外観図。The armature external view before the insulator mounting | wearing which concerns on Embodiment 3, and coil | winding processing. 本発明の実施形態に係る電動送風機の縦断面図。The longitudinal section of the electric blower concerning the embodiment of the present invention.

実施の形態１．
以下、本発明の実施形態を詳細に説明する。図１は本発明の実施形態１に係る絶縁体装着前及び巻線加工前の電機子外観図である。この電機子は回転用の軸３と、軸３に圧入保持される鉄心２と、鉄心２に巻回される電線と鉄心２の端面２ａ，２ｂ及び軸３との絶縁を保つための絶縁体１と、絶縁体１と共に絶縁に供される絶縁端板４とを備えている。
鉄心２は、対向する端面２ａ，２ｂ間に軸３が貫通し、その端面間の外周部に軸３の長手方向（軸方向と称する）に沿う複数のスロット２ｃが形成されている。このスロット２ｃは電線が巻回される部分である。なお、本明細書では、鉄心２の端面２ａ，２ｂ間を鉄心２の幅とも称する。Embodiment 1 FIG.
Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is an external view of an armature before mounting an insulator and before processing a winding according to Embodiment 1 of the present invention. The armature includes a rotating shaft 3, an iron core 2 press-fitted and held on the shaft 3, an insulator for maintaining insulation between the wires wound around the iron core 2 and the end surfaces 2 a and 2 b of the iron core 2 and the shaft 3. 1 and an insulating end plate 4 used for insulation together with the insulator 1.
In the iron core 2, the shaft 3 passes between the opposed end surfaces 2 a and 2 b, and a plurality of slots 2 c are formed along the longitudinal direction (referred to as the axial direction) of the shaft 3 on the outer peripheral portion between the end surfaces. The slot 2c is a portion around which the electric wire is wound. In the present specification, the space between the end surfaces 2a and 2b of the iron core 2 is also referred to as the width of the iron core 2.

絶縁体１は、軸３に圧入されるパイプ部１ａ、鉄心２の端面２ａに隣接して対向配置される端面絶縁部１ｂ、端面絶縁部１ｂの周囲から端面絶縁部１ｂと直交する方向に延長されて鉄心２のスロット２ｃに嵌合挿入されるスロット絶縁部１ｃから構成されている。スロット絶縁部１ｃの軸方向長さは、鉄心２の幅より少し長く設定されている。パイプ部１ａ、端面絶縁部１ｂ及びスロット絶縁部１ｃは、予め一体化された状態で軸３に圧入され、鉄心２に装着される。従って、パイプ部１ａ、端面絶縁部１ｂ及びスロット絶縁部１ｃは、樹脂等の一体成形により製作されているのが好ましい。
絶縁端板４は、軸３に圧入されるパイプ部４ａ、鉄心２の端面２ｂに隣接して対向配置される端面絶縁部４ｂによって構成され、端面絶縁部４ｂの周囲にはスロット絶縁部１ｃ及びスロット２ｃに対応する複数の開口部（又は切欠部）４ｃが形成されている。The insulator 1 extends from the periphery of the end surface insulating portion 1b in a direction perpendicular to the end surface insulating portion 1b, the pipe portion 1a press-fitted into the shaft 3, the end surface insulating portion 1b disposed adjacent to the end surface 2a of the iron core 2. The slot insulating portion 1c is fitted and inserted into the slot 2c of the iron core 2. The axial length of the slot insulating portion 1 c is set slightly longer than the width of the iron core 2. The pipe portion 1a, the end surface insulating portion 1b, and the slot insulating portion 1c are press-fitted into the shaft 3 in a state of being integrated in advance, and are attached to the iron core 2. Therefore, it is preferable that the pipe part 1a, the end surface insulating part 1b, and the slot insulating part 1c are manufactured by integral molding of resin or the like.
The insulating end plate 4 includes a pipe portion 4a that is press-fitted into the shaft 3, and an end surface insulating portion 4b that is disposed adjacent to the end surface 2b of the iron core 2, and the end surface insulating portion 4b is surrounded by a slot insulating portion 1c and A plurality of openings (or notches) 4c corresponding to the slots 2c are formed.

図２は実施形態１に係る絶縁体装着後及び巻線加工後の電機子外観図である。この電機子１６は、軸３に圧入された鉄心２の一方の端面側から絶縁体１が軸３に圧入されて、鉄心２のスロット２ｃに絶縁体１のスロット絶縁部１ｃが挿入された状態となっている。また、鉄心２の他方の端面側から絶縁端板４が軸３に圧入されて、鉄心２の端面２ｂに隣接配置されている。なお、スロット絶縁部１ｃの先端部は、絶縁端板４の開口部に当接するか又は嵌合した状態になっている。そして、軸３に整流子５が圧入固定され、さらに鉄心２に電線８が巻回されて、電機子１６が構成されている。   FIG. 2 is an external view of the armature after mounting the insulator and processing the winding according to the first embodiment. In this armature 16, the insulator 1 is press-fitted into the shaft 3 from one end face side of the iron core 2 press-fitted into the shaft 3, and the slot insulating portion 1 c of the insulator 1 is inserted into the slot 2 c of the iron core 2. It has become. An insulating end plate 4 is press-fitted into the shaft 3 from the other end face side of the iron core 2 and is disposed adjacent to the end face 2 b of the iron core 2. Note that the end of the slot insulating portion 1 c is in contact with or fitted to the opening of the insulating end plate 4. Then, the commutator 5 is press-fitted and fixed to the shaft 3, and the electric wire 8 is wound around the iron core 2 to constitute an armature 16.

図３は図１又は図２の電機子における軸３と鉄心２との固定方法を示す説明図であり、（ａ）は軸３の断面図、（ｂ）は軸３及び軸３に圧入された鉄心２の正面図である。図示するように、軸３の外周部にはその軸長方向に沿って０．０１〜０．２ｍｍ程度の凸部が筋状に複数本（この例では４本）形成されている。この筋状の凸部をナール６と称する。そして、ナール６を含めない軸３の外径をφａ、ナール６を含めた軸３の外形φｂとした場合には、φａ＜φｂとなっている。また、軸３に鉄心２を圧入する際に鉄心２が通過した後の残存ナールを６ａとし、その残存ナール６ａを含めた軸３の外径をφｂ１とすると、φｂ＞φｂ１となっている。なお、図３中の矢印は鉄心２の圧入方向を示している。   3A and 3B are explanatory views showing a method of fixing the shaft 3 and the iron core 2 in the armature of FIG. 1 or FIG. 2. FIG. 3A is a cross-sectional view of the shaft 3, and FIG. FIG. As shown in the drawing, a plurality of convex portions of about 0.01 to 0.2 mm are formed in a streak shape (four in this example) along the axial length direction on the outer peripheral portion of the shaft 3. This streak-shaped convex portion is referred to as “Nar 6”. When the outer diameter of the shaft 3 not including the knurl 6 is φa and the outer diameter Φb of the shaft 3 including the knurl 6 is φa <φb. Further, assuming that the remaining knurl after the iron core 2 passes when the iron core 2 is press-fitted into the shaft 3 is 6a, and the outer diameter of the shaft 3 including the remaining knurl 6a is φb1, φb> φb1. Note that the arrows in FIG. 3 indicate the press-fitting direction of the iron core 2.

図４は鉄心２、絶縁体１及び巻線８の配置状態を示す鉄心２の部分断面図である。図示するように、鉄心２のスロット２ｃには絶縁体１のスロット絶縁部１ｃが嵌合して挿入されている。そして、そのスロット絶縁部１ｃを介して各スロット２ｃに電線８が巻回されている。これによって、鉄心２と電線８との絶縁が維持されている。   FIG. 4 is a partial cross-sectional view of the iron core 2 showing an arrangement state of the iron core 2, the insulator 1 and the winding 8. As shown in the figure, a slot insulating portion 1 c of the insulator 1 is fitted and inserted into a slot 2 c of the iron core 2. And the electric wire 8 is wound by each slot 2c via the slot insulation part 1c. Thereby, the insulation between the iron core 2 and the electric wire 8 is maintained.

絶縁体１は、電線８と軸３との間の絶縁を維持するためのパイプ部１ａ、電線８と鉄心２の端面２ａとの間の絶縁を維持するための端面絶縁部１ｂ、電線８と鉄心２のスロット２ｃとの間の絶縁を維持するためのスロット絶縁部１ｃにより構成されていて、それらが一体に形成されたものである。パイプ部１ａの内径はφｂ１より大きく、肉厚は０．５〜２ｍｍに形成されている。絶縁端板部１ｂは肉厚０．１〜０．５ｍｍに形成され、その周囲にスロット２ｃに嵌り合う複数の凹面を備えたスロット絶縁部１ｃが形成されている。スロット絶縁部１ｃは肉厚０．５〜２ｍｍに形成され、軸方向の長さが鉄心２の幅より例えば０．５ｍｍ以上長く形成されている。また、スロット絶縁部１ｃは、図４に示すように、鉄心２のスロット２ｃと略同一の断面形状に形成され、スロット２ｃと円周方向において同一の間隔で同数形成されている。   The insulator 1 includes a pipe portion 1a for maintaining insulation between the electric wire 8 and the shaft 3, an end surface insulating portion 1b for maintaining insulation between the electric wire 8 and the end surface 2a of the iron core 2, and the electric wire 8. It is comprised by the slot insulation part 1c for maintaining the insulation between the slots 2c of the iron core 2, and they are integrally formed. The internal diameter of the pipe part 1a is larger than (phi) b1, and the thickness is formed to 0.5-2 mm. The insulating end plate portion 1b is formed with a thickness of 0.1 to 0.5 mm, and a slot insulating portion 1c having a plurality of concave surfaces that fit into the slot 2c is formed around the insulating end plate portion 1b. The slot insulating portion 1c is formed with a thickness of 0.5 to 2 mm, and the axial length is longer than the width of the iron core 2 by, for example, 0.5 mm or more. As shown in FIG. 4, the slot insulating portions 1c are formed in substantially the same cross-sectional shape as the slots 2c of the iron core 2, and are formed in the same number as the slots 2c at the same interval in the circumferential direction.

絶縁端板４は、巻回された電線８と軸３との間の絶縁を維持するためのパイプ部４ａ、電線８と鉄心２の端面２ｂとの絶縁を維持するための端面絶縁部４ｂとから構成されている。パイプ部４ａの内径は図３に示したφｂ１より大きく、肉厚は０．５〜２ｍｍに形成されている。端面絶縁部４ｂは肉厚０．５〜２ｍｍに形成され、スロット絶縁部１ｃ及びスロット２ｃに対応する開口部４ｃが形成されている。なお、パイプ４ａと端面絶縁部４ｂとは、同一樹脂にて一体成形されているのが好ましい。   The insulating end plate 4 includes a pipe portion 4a for maintaining insulation between the wound electric wire 8 and the shaft 3, and an end surface insulating portion 4b for maintaining insulation between the electric wire 8 and the end surface 2b of the iron core 2. It is composed of The inner diameter of the pipe portion 4a is larger than φb1 shown in FIG. 3, and the wall thickness is 0.5-2 mm. The end face insulating portion 4b is formed with a thickness of 0.5 to 2 mm, and an opening 4c corresponding to the slot insulating portion 1c and the slot 2c is formed. In addition, it is preferable that the pipe 4a and the end surface insulating part 4b are integrally molded with the same resin.

次に、上記電機子の組立手順を説明する。まず鉄心２を軸３に挿入する。図３に示すように、鉄心２の内径は軸３の外径φａより大きく、かつナール６を含めた軸３の外径φｂより小さく形成されており、鉄心２はナール６を介して軸３に確実に圧入保持される。
続いて、絶縁体１を鉄心２の圧入により形成された残存ナール６ａのある側から挿入しながら、絶縁体１のスロット絶縁部１ｃを端面２ａ側からスロット２ｃに挿入し、絶縁体１の端面絶縁部１ｂが鉄心２の端面２ａに隣接するまで挿入する。さらに、絶縁端板４を絶縁体１を挿入した側と反対側から軸３へ挿入し、鉄心２の端面２ｂと隣接するまで挿入し、絶縁端板４の開口部４ｃにスロット絶縁部１ｃの先端部を挿入させる。絶縁体１におけるスロット絶縁部１ｃの軸方向長さは、鉄心２の幅より０．５ｍｍ程度長く形成しておき、スロット絶縁部１ｃの先端が絶縁端板４の開口部４ｃに当接又は嵌合するようにしている。これにより鉄心２は絶縁体１と絶縁端板４とにより挟まれた状態となる。Next, the assembly procedure of the armature will be described. First, the iron core 2 is inserted into the shaft 3. As shown in FIG. 3, the inner diameter of the iron core 2 is larger than the outer diameter φa of the shaft 3 and smaller than the outer diameter φb of the shaft 3 including the knurl 6, and the iron core 2 is connected to the shaft 3 via the knurl 6. Is securely press-fitted.
Subsequently, while inserting the insulator 1 from the side where the remaining knurl 6a formed by press-fitting the iron core 2 is inserted, the slot insulating portion 1c of the insulator 1 is inserted into the slot 2c from the end face 2a side, and the end face of the insulator 1 is inserted. Insert until the insulating portion 1b is adjacent to the end surface 2a of the iron core 2. Further, the insulating end plate 4 is inserted into the shaft 3 from the side opposite to the side where the insulator 1 is inserted and inserted until it is adjacent to the end surface 2b of the iron core 2, and the slot insulating portion 1c is inserted into the opening 4c of the insulating end plate 4. Insert the tip. The axial length of the slot insulating portion 1c in the insulator 1 is formed to be longer than the width of the iron core 2 by about 0.5 mm, and the tip of the slot insulating portion 1c abuts or fits into the opening 4c of the insulating end plate 4. I try to match. As a result, the iron core 2 is sandwiched between the insulator 1 and the insulating end plate 4.

その後、軸３に整流子４を圧入固定し、さらに鉄心２のスロット２ｃに電線８を巻回することで、図２に示すような電機子１６が形成される。
上記のようにして製作された電機子１６を回転子とし、これを固定子と組み合わせることで電動機を構成することができる。図５は電機子１６を備えた電動機の一例であって、電機子１６の鉄心２の周囲に固定子１５が配置されたものである。Thereafter, the commutator 4 is press-fitted and fixed to the shaft 3, and the electric wire 8 is wound around the slot 2 c of the iron core 2, whereby the armature 16 as shown in FIG. 2 is formed.
An electric motor can be configured by using the armature 16 manufactured as described above as a rotor and combining it with a stator. FIG. 5 shows an example of an electric motor provided with an armature 16, in which a stator 15 is arranged around the iron core 2 of the armature 16.

以上のようにして製作された電動機は、それを構成する電機子の特徴ゆえに以下のような効果を奏する。
パイプ部１ａ、絶縁端板１ｂ及びスロット絶縁部１ｃは、軸３に挿入前に鉄心２の形状に合わせて一体形成されている。すなわち、鉄心２の端面２ａに隣接される端面絶縁部１ｂと鉄心２のスロット２ｃに挿入されるスロット絶縁部１ｃとが一体に形成された絶縁体１を電機子の絶縁部材としている。このため、絶縁体１を鉄心２に装着する際、従来行なっていたスロット数に応じてスロット位置を角度で高速で割り出す工程の必要がなくなり、スロット絶縁部の挿入ミスや寸法ばらつきが発生しなくなる。The electric motor manufactured as described above has the following effects because of the characteristics of the armature that constitutes the electric motor.
The pipe portion 1a, the insulating end plate 1b, and the slot insulating portion 1c are integrally formed in accordance with the shape of the iron core 2 before being inserted into the shaft 3. That is, the insulator 1 in which the end surface insulating portion 1b adjacent to the end surface 2a of the iron core 2 and the slot insulating portion 1c inserted into the slot 2c of the iron core 2 are integrally formed is used as an insulating member of the armature. For this reason, when the insulator 1 is mounted on the iron core 2, there is no need for the step of determining the slot position at high speed according to the number of slots, which has been conventionally performed, and the insertion error of the slot insulating portion and the dimensional variation do not occur. .

また、スロット絶縁部１ｃは、その先端が絶縁端板４の開口部４ｃに隣接又は嵌合するように固定されており、絶縁体１をスロット２ｃに挿入してしまえば、スロット絶縁部１ｃがスロット２ｃ内で自在に移動することができなくなる。このため、鉄心圧入以後の残存ナール６ａを含めた軸３の径に大きくバラツキが発生しても、巻線前に絶縁体１が回転移動することがなくなる。従って、鉄心２の内周面がナール６を倒しながら軸３に挿入される圧入方式においても、絶縁体１を鉄心２に安定して装着できることになり、鉄損性能に応じた異なる材質を幅広く選定することができる。   The slot insulating portion 1c is fixed so that the tip thereof is adjacent to or fitted into the opening 4c of the insulating end plate 4. If the insulator 1 is inserted into the slot 2c, the slot insulating portion 1c It cannot move freely within the slot 2c. For this reason, even if the diameter of the shaft 3 including the remaining knurl 6a after the press-fitting of the iron core greatly varies, the insulator 1 does not rotate and move before winding. Therefore, even in the press-fitting method in which the inner peripheral surface of the iron core 2 is inserted into the shaft 3 while tilting the knur 6, the insulator 1 can be stably attached to the iron core 2, and a wide variety of materials depending on the iron loss performance can be obtained. Can be selected.

実施の形態２．
図６は本発明の実施形態２に係る絶縁体装着前及び巻線加工前の電機子外観図である。これは、実施形態１の絶縁体１と絶縁端板４に代えて、２つの絶縁体９を採用したものである。
絶縁体９は、巻回される電線と軸３の間の絶縁を維持するためのパイプ部９ａ、電線と鉄心２の端面２ａ又は２ｂ間の絶縁を維持するための端面絶縁部９ｂ、電線と鉄心２のスロット２ｃの絶縁を維持するためのスロット絶縁部９ｃにより構成されていて、それらが一体的に形成されている。なお、ここでは、スロット絶縁部９ｃの軸方向長さを、実施形態１におけるスロット絶縁部１ｃの軸方向長さの半分とし、２つの絶縁体９を同形状としたが、それは実施形態１におけるスロット絶縁部１ｃの軸方向長さを任意の割合で分割した長さとしてよい。Embodiment 2. FIG.
FIG. 6 is an external view of an armature before mounting an insulator and before processing a winding according to Embodiment 2 of the present invention. In this embodiment, two insulators 9 are employed in place of the insulator 1 and the insulating end plate 4 of the first embodiment.
The insulator 9 includes a pipe portion 9a for maintaining insulation between the wound electric wire and the shaft 3, an end surface insulating portion 9b for maintaining insulation between the electric wire and the end surface 2a or 2b of the iron core 2, and an electric wire It is comprised by the slot insulation part 9c for maintaining the insulation of the slot 2c of the iron core 2, and they are integrally formed. Here, the axial length of the slot insulating portion 9c is half the axial length of the slot insulating portion 1c in the first embodiment, and the two insulators 9 have the same shape. The length in the axial direction of the slot insulating portion 1c may be divided by an arbitrary ratio.

パイプ部９ａの内径はφｂ１より大きく、肉厚は０．５〜２ｍｍに形成されている。絶縁端板部９ｂは肉厚０．５〜２ｍｍに形成され、周囲にはスロット２ｃに対応する凹部が多数形成されている。スロット絶縁部９ｃは縁端板部９ｂの凹部から縁端板部９ｂと直交する方向に延長されたものであって、その軸方向長さが鉄心幅のほぼ半分の長さで形成され、厚さは例えば０．２〜１ｍｍである。また、スロット絶縁部９ｃは、その断面形状が鉄心２のスロット２ｃと略同一形状に形成され、鉄心２のスロット２ｃと円周方向において同一の間隔で、かつ同数形成されている。   The inner diameter of the pipe portion 9a is larger than φb1, and the wall thickness is 0.5-2 mm. The insulating end plate portion 9b is formed with a thickness of 0.5 to 2 mm, and a number of recesses corresponding to the slots 2c are formed around it. The slot insulating portion 9c extends from the recess of the edge plate portion 9b in a direction orthogonal to the edge plate portion 9b, and has an axial length that is approximately half the width of the iron core. The thickness is, for example, 0.2 to 1 mm. Further, the slot insulating portions 9c are formed so that the cross-sectional shape thereof is substantially the same as the slot 2c of the iron core 2, and the same number and the same interval as the slots 2c of the iron core 2 in the circumferential direction.

実施形態２の電機子の製造方法は以下のとおりである。まず、鉄心２の軸３への圧入は実施形態１で説明したのと同様に行う。次に、鉄心２が装着された軸３に、一方の絶縁体９を挿入しながら、そのスロット絶縁部９ｃを、鉄心２の端面２ａ側からスロット２ｃへ、端面絶縁部９ｂが鉄心端面２ａと隣接するまで挿入する。同様にして、他方の絶縁体９を反対の端面２ｂ側から軸３に挿入しながら、そのスロット絶縁部９ｃを、鉄心２の端面２ｂ側からスロット２ｃへ、端面絶縁部９ｂが鉄心端面２ｂと隣接するまで挿入する。これにより、鉄心が２個の絶縁体９に挟まれ、かつ、スロット２ｃ内の軸方向中心付近において、２つの対向するスロット絶縁部９ｃが接合された状態になる。   The manufacturing method of the armature of Embodiment 2 is as follows. First, press fitting of the iron core 2 to the shaft 3 is performed in the same manner as described in the first embodiment. Next, while inserting one insulator 9 into the shaft 3 on which the iron core 2 is mounted, the slot insulating portion 9c is moved from the end surface 2a side of the iron core 2 to the slot 2c, and the end surface insulating portion 9b is connected to the iron core end surface 2a. Insert until adjacent. Similarly, while inserting the other insulator 9 into the shaft 3 from the opposite end surface 2b side, the slot insulating portion 9c is moved from the end surface 2b side of the core 2 to the slot 2c, and the end surface insulating portion 9b is connected to the core end surface 2b. Insert until adjacent. As a result, the iron core is sandwiched between the two insulators 9 and the two opposing slot insulating portions 9c are joined in the vicinity of the axial center in the slot 2c.

上記電機子を採用した実施形態２の電動機によれば、実施形態１により得られる効果に加え、同形状の２つの絶縁体９を採用することで、部品の共通化による、部品コストの削減や組立の簡素化を図ることが可能となる。   According to the electric motor of the second embodiment that employs the above armature, in addition to the effects obtained by the first embodiment, by adopting two insulators 9 of the same shape, it is possible to reduce the cost of parts by sharing parts. It becomes possible to simplify the assembly.

実施の形態３．
図７は本発明の実施形態３に係る絶縁体装着前及び巻線加工前の電機子外観図である。これは、実施形態１の絶縁体１と絶縁端板４に代えて、２つの絶縁体１０，１１を採用したものである。
絶縁体１０は、巻回される電線と軸３との間の絶縁を維持するためのパイプ部１０ａ、電線と鉄心２の端面２ａ又は２ｂ間の絶縁を維持するための端面絶縁部１０ｂ、電線と鉄心２のスロット２ｃとの間の絶縁を維持するためのスロット絶縁部１０ｃにより構成されていて、樹脂等により一体に形成されている。パイプ部１０ａの内径は図３のφｂ１より大きく、肉厚は０．５〜２ｍｍに形成されている。端面絶縁部１０ｂは肉厚０．５〜２ｍｍに形成され、端面絶縁部１０ｂの周囲には鉄心２のスロット２ｃに対応する凹部が形成されている。スロット絶縁部１０ｃは端面絶縁部１０ｂの凹部から端面絶縁部１０ｂと直交する方向へ延長されたもので、その断面形状が鉄心２のスロット２ｃと略同一形状に形成され、軸方向長さが鉄心２の幅より例えば０．５ｍｍ程度長く形成されている。これにより、絶縁体１０，１１の鉄心２への装着時、スロット絶縁部１０ｃの先端部は空きスロット絶縁部１１ｄの凹部に当接又は嵌合され、スロット絶縁部１１ｃの先端部は空きスロット絶縁部１０ｄの凹部に当接又は嵌合される。なお、スロット絶縁部１０ｃは端面絶縁部１０ｂの凹部の全てに形成されているのではなく、空きスロット絶縁部１０ｄを介して凹部のひとつ置きに形成されている。また、スロット絶縁部１０ｃの厚さは例えば０．２〜１ｍｍである。Embodiment 3 FIG.
FIG. 7 is an external view of an armature before mounting an insulator and before processing a winding according to Embodiment 3 of the present invention. In this embodiment, two insulators 10 and 11 are employed instead of the insulator 1 and the insulating end plate 4 of the first embodiment.
The insulator 10 includes a pipe portion 10a for maintaining insulation between the wound electric wire and the shaft 3, an end surface insulating portion 10b for maintaining insulation between the electric wire and the end surface 2a or 2b of the iron core 2, and an electric wire. And a slot insulating portion 10c for maintaining insulation between the core 2 and the slot 2c of the iron core 2, and is integrally formed of resin or the like. The inner diameter of the pipe portion 10a is larger than φb1 in FIG. 3, and the wall thickness is 0.5-2 mm. The end surface insulating portion 10b is formed with a thickness of 0.5 to 2 mm, and a recess corresponding to the slot 2c of the iron core 2 is formed around the end surface insulating portion 10b. The slot insulating portion 10c extends from the concave portion of the end surface insulating portion 10b in a direction orthogonal to the end surface insulating portion 10b, and has a cross-sectional shape that is substantially the same as the slot 2c of the iron core 2 and has an axial length of the iron core. For example, it is longer than the width of 2 by about 0.5 mm. Thereby, when the insulators 10 and 11 are attached to the iron core 2, the tip end portion of the slot insulating portion 10c is brought into contact with or fitted into the concave portion of the empty slot insulating portion 11d, and the tip end portion of the slot insulating portion 11c is empty slot insulated. It abuts or fits into the recess of the portion 10d. The slot insulating portions 10c are not formed in all the concave portions of the end surface insulating portion 10b, but are formed every other concave portion through the empty slot insulating portions 10d. Moreover, the thickness of the slot insulation part 10c is 0.2-1 mm, for example.

絶縁体１１は、絶縁体１０と対に用いられものであり、絶縁体１０の空きスロット絶縁部１０ｄに対向する部分にスロット絶縁部１１ｃが形成され、絶縁体１０のスロット絶縁部１０ｃに対向する部分に空きスロット絶縁部１１ｄが形成されたものである。それ以外の点では、絶縁体１１は絶縁体１０と同じ構成である。   The insulator 11 is used as a pair with the insulator 10, and a slot insulating portion 11 c is formed in a portion of the insulator 10 that faces the empty slot insulating portion 10 d, and faces the slot insulating portion 10 c of the insulator 10. An empty slot insulating part 11d is formed in the part. In other respects, the insulator 11 has the same configuration as the insulator 10.

次に、実施形態３の電機子の製造方法について説明する。まず、鉄心２の軸３への圧入は実施形態１で説明したのと同様に行う。次に、鉄心２が装着された軸３に、絶縁体１０を挿入しながら、そのスロット絶縁部１０ｃを、鉄心２の端面２ａ側からスロット２ｃへ、端面絶縁部１０ｂが端面２ａと隣接するまで挿入する。同様にして、絶縁体１１を反対の端面２ｂ側から軸３に挿入しながら、そのスロット絶縁部１１ｃを、鉄心２の端面２ｂ側からスロット２ｃへ、端面絶縁部１１ｂが端面２ｂと隣接するまで挿入する。その際、スロット絶縁部１０ｃとスロット絶縁部１１ｃとがスロット２ｃに交互に挿入されるようにする。   Next, the manufacturing method of the armature of Embodiment 3 is demonstrated. First, press fitting of the iron core 2 to the shaft 3 is performed in the same manner as described in the first embodiment. Next, while inserting the insulator 10 into the shaft 3 on which the iron core 2 is mounted, the slot insulating portion 10c is moved from the end surface 2a side of the iron core 2 to the slot 2c until the end surface insulating portion 10b is adjacent to the end surface 2a. insert. Similarly, while inserting the insulator 11 into the shaft 3 from the opposite end surface 2b side, the slot insulating portion 11c is moved from the end surface 2b side of the iron core 2 to the slot 2c until the end surface insulating portion 11b is adjacent to the end surface 2b. insert. At that time, the slot insulating portions 10c and the slot insulating portions 11c are alternately inserted into the slots 2c.

上記電機子を採用した実施形態３の電動機によれば、実施形態１により得られる効果に加え、同形状の２つの絶縁体１０，１１を採用することで、部品の共通化により、部品コストの削減や組立の簡素化を図ることも可能となる。
また、スロット絶縁部１０ｃの先端部が空きスロット絶縁部１１ｄの凹部に当接又は嵌合され、スロット絶縁部１１ｃの先端部が空きスロット絶縁部１０ｄの凹部に当接又は嵌合されるため、スロット２ｃ内でスロット絶縁部１０ｄ，１１ｄと鉄心２とに隙間が生じることがなくなり、信頼性の高い絶縁を達成することができる。
なお、この実施形態では１つの凹部おきにスロット絶縁部１０ｃ，１１ｃを形成したが、それらを２個以上の凹部おきに配置するようにしてもよい。According to the electric motor of the third embodiment that employs the above armature, in addition to the effects obtained by the first embodiment, by adopting the two insulators 10 and 11 having the same shape, it is possible to reduce the component cost by sharing the components. Reduction and assembly can be simplified.
In addition, since the tip of the slot insulating portion 10c is in contact with or fitted into the recess of the empty slot insulating portion 11d, and the tip of the slot insulating portion 11c is in contact with or fitted into the recess of the empty slot insulating portion 10d, There is no gap between the slot insulating portions 10d and 11d and the iron core 2 in the slot 2c, and highly reliable insulation can be achieved.
In this embodiment, the slot insulating portions 10c and 11c are formed every other recess, but they may be arranged every two or more recesses.

ところで、上記各実施形態における絶縁体１，９，１０，１１や絶縁端板４の素材としては樹脂が好ましく、ＰＥＴあるいはＰＢＴ等の耐熱性や成形性に優れた樹脂が特に好ましい。さらに、絶縁体１，９，１０，１１のパイプ部、端面絶縁部及びスロット絶縁部は、同一樹脂により一体成形されたものが特に好ましいが、例えばスロット絶縁部を耐圧性の優れた部材（例えばポリエステルフィルム）で構成し、それを端面絶縁部に接着やはめ込み等の方法で接合して一体化してもよい。
また、上記各実施形態の中で示した絶縁体１，９，１０，１１や絶縁端板４の厚さの値は例示であって、この厚さに限定されるものではない。By the way, as a material of the insulators 1, 9, 10, 11 and the insulating end plate 4 in each of the above embodiments, a resin is preferable, and a resin excellent in heat resistance and moldability such as PET or PBT is particularly preferable. Furthermore, it is particularly preferable that the pipe portions, end surface insulating portions, and slot insulating portions of the insulators 1, 9, 10, and 11 are integrally formed of the same resin. Polyester film), and it may be integrated by bonding it to the end surface insulating portion by a method such as adhesion or fitting.
Moreover, the thickness values of the insulators 1, 9, 10, 11 and the insulating end plate 4 shown in the above embodiments are merely examples, and are not limited to these thicknesses.

実施の形態４．
図８は本発明の実施の形態４に係る電動送風機の縦断面図である。この電動送風機は、実施形態１乃至３のいずれかに記載の電機子を搭載した電動機を備えており、それにより送風用ファンを駆動するようにしたものである。図８に例示した電動送風機は、ファンカバー２０、ファンカバー２０の中心部に設けられた吸気口１２、軸３に設けられた送風ファン１３、送風ファン１３により送られる空気を導く案内羽根１４、電動機を構成する固定子１５及び電機子１６、電動機１６を固定するフレーム１７、フレーム１７に設けられた排気口１８、カーボン刷子１９、整流子４等により構成されている。なお、電機子１６は図２に示した電機子１６とする。Embodiment 4 FIG.
FIG. 8 is a longitudinal sectional view of an electric blower according to Embodiment 4 of the present invention. This electric blower includes an electric motor equipped with the armature described in any one of the first to third embodiments, and thereby drives a blower fan. The electric blower illustrated in FIG. 8 includes a fan cover 20, a suction port 12 provided in the center of the fan cover 20, a blower fan 13 provided in the shaft 3, guide vanes 14 that guide air sent by the blower fan 13, The motor 15 includes a stator 15 and an armature 16, a frame 17 that fixes the motor 16, an exhaust port 18 provided in the frame 17, a carbon brush 19, a commutator 4, and the like. The armature 16 is the armature 16 shown in FIG.

上記電動送風機に電力が供給され、電機子１６及び固定子１５に巻回された電線に電流が流れると、固定子１５により励磁された磁界により電機子１６に回転方向の力が発生する。同時に、軸３に設けられたファン１３も回転を始め、吸気口１２から空気を吸入する。送風機内へ吸入された空気は、案内羽根１４を経由し、固定子１５とフレーム１７の間を通って電動機を冷却した後、排気口１８から外部へ排気される。   When electric power is supplied to the electric blower and a current flows through the wires wound around the armature 16 and the stator 15, a force in the rotational direction is generated in the armature 16 by the magnetic field excited by the stator 15. At the same time, the fan 13 provided on the shaft 3 also starts rotating and sucks air from the air inlet 12. The air sucked into the blower passes through the guide vanes 14, passes between the stator 15 and the frame 17, cools the electric motor, and is then exhausted from the exhaust port 18 to the outside.

上記電動送風は、電機子１６の絶縁体（パイプ部１ａ、端面絶縁部１ｂ及びスロット絶縁部１ｃ）が、一体成形又は接合等により予め一体に形成されて鉄心に密着されたものである。そのため、吸気口１２から流入した気流により、磨耗したカーボン刷子１９の紛が乱流して電機子１６に付着しても、それが鉄心と絶縁体との間に入り込むことに起因する絶縁破壊が抑制され、送風機の信頼性の向上及び長寿命化が図れる。   In the electric blower, the insulators (pipe portion 1a, end surface insulating portion 1b, and slot insulating portion 1c) of the armature 16 are integrally formed in advance by integral molding or joining, and are in close contact with the iron core. Therefore, even if the powder of the worn carbon brush 19 is turbulent and adheres to the armature 16 due to the airflow flowing in from the air inlet 12, the dielectric breakdown caused by it entering between the iron core and the insulator is suppressed. Thus, the reliability of the blower can be improved and the service life can be extended.

符号の説明Explanation of symbols

１ 実施の形態１による絶縁体、１ａ パイプ部、１ｂ 端面絶縁部、１ｃ スロット絶縁部、２ 鉄心、２ａ，２ｂ 鉄心の端面、２ｃ 鉄心のスロット、３ 軸、４ 絶縁端板、４ａ パイプ部、４ｂ 端面絶縁部、４ｃ 開口部、５ 整流子、６，６ａ ナール、８ 電線、９ 実施の形態２による絶縁体、９ａ パイプ部、９ｂ 端面絶縁部、９ｃ スロット絶縁部、１０，１１ 実施の形態３による絶縁体、１０ａ，１１ａ パイプ部、１０ｂ，１１ｂ 端面絶縁部、１０ｃ，１１ｃ スロット絶縁部、１０ｄ，１１ｄ 空きスロット絶縁部、１２ 吸気口、１３ ファン、１４ 案内羽根、１５ 固定子、１６ 電機子、１７ モータフレーム、１８ 排気口、１９ カーボン刷子、２０ ファンカバー。










































DESCRIPTION OF SYMBOLS 1 Insulator by Embodiment 1, 1a Pipe part, 1b End surface insulating part, 1c Slot insulating part, 2 Iron core, 2a, 2b End surface of iron core, 2c Slot of iron core, 3 axis, 4 Insulating end plate, 4a Pipe part, 4b End surface insulating portion, 4c opening portion, 5 commutator, 6, 6a nar, 8 electric wire, 9 insulator according to Embodiment 2, 9a pipe portion, 9b end surface insulating portion, 9c slot insulating portion, 10, 11 embodiment 3 insulator, 10a, 11a pipe part, 10b, 11b end face insulating part, 10c, 11c slot insulating part, 10d, 11d empty slot insulating part, 12 air inlet, 13 fan, 14 guide vane, 15 stator, 16 electric machine Child, 17 motor frame, 18 exhaust port, 19 carbon brush, 20 fan cover.










































Claims (2)

対向する端面間に軸が貫通し前記端面間の外周部に前記軸方向に沿う複数のスロットが形成された鉄心と、
前記軸に挿入されて前記鉄心の一方の端面に隣接配置された端面絶縁部と該端面絶縁部の周囲から延長され前記複数のスロットに一つ置き又は複数カ所置きに挿入されたスロット絶縁部とが一体に形成された第一絶縁体と、
前記軸に挿入されて前記鉄心の他方の端面に隣接配置された端面絶縁部と該端面絶縁部の周囲から延長され前記第一絶縁体のスロット絶縁部の挿入による空きスロットに挿入されたスロット絶縁部とが一体に形成された第二絶縁体と、
前記複数のスロットに挿入された前記スロット絶縁部を介して前記鉄心に巻回された電線とを備えた電機子を有し、
前記第一絶縁体及び第二絶縁体の各スロット絶縁部を、前記鉄心の端面間幅とほぼ同じ長さにしたことを特徴とする電動機。An iron core in which a shaft penetrates between opposing end surfaces, and a plurality of slots along the axial direction are formed in an outer peripheral portion between the end surfaces;
One placed or inserted slot insulation in every several locations in the extended previous SL plurality of slots from the periphery of one end surface insulating portion disposed adjacent the end face and the end face insulation of the inserted and the core to the shaft A first insulator integrally formed with the part;
Slot insulation inserted into the empty slot by inserting the slot insulator of the first insulator extended from the periphery of an end face insulator inserted into the shaft and adjacent to the other end face of the iron core A second insulator integrally formed with the part;
Has an armature and a wire wound around the core via the slot insulating portion inserted into the plurality of slots,
The electric motor according to claim 1, wherein each of the slot insulating portions of the first insulator and the second insulator has substantially the same length as the width between the end faces of the iron core . 請求項１に記載の電動機と、前記電動機により駆動されるファンとを有してなることを特徴とする電動送風機。An electric blower comprising the electric motor according to claim 1 and a fan driven by the electric motor.
JP2006531213A 2004-09-01 2004-09-01 Electric motor and electric blower provided with the same Expired - Fee Related JP4498358B2 (en)

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JP5573831B2 (en) * 2011-12-29 2014-08-20 三菱電機株式会社 Insulator for electric motor, electric motor, electric blower
US9143015B2 (en) 2012-05-23 2015-09-22 Black & Decker Inc. Brush holder for a brush assembly for a power tool motor
CN108768004A (en) * 2018-05-30 2018-11-06 广东威灵电机制造有限公司 Motor stator and motor
CN108462264A (en) * 2018-05-30 2018-08-28 广东威灵电机制造有限公司 Motor stator and motor

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