JP2666464B2 - Commutator motor shaft insulation - Google Patents

Commutator motor shaft insulation

Info

Publication number
JP2666464B2
JP2666464B2 JP1095727A JP9572789A JP2666464B2 JP 2666464 B2 JP2666464 B2 JP 2666464B2 JP 1095727 A JP1095727 A JP 1095727A JP 9572789 A JP9572789 A JP 9572789A JP 2666464 B2 JP2666464 B2 JP 2666464B2
Authority
JP
Japan
Prior art keywords
shaft
insulation
insulator
iron core
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP1095727A
Other languages
Japanese (ja)
Other versions
JPH02273060A (en
Inventor
吉弘 松田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1095727A priority Critical patent/JP2666464B2/en
Publication of JPH02273060A publication Critical patent/JPH02273060A/en
Application granted granted Critical
Publication of JP2666464B2 publication Critical patent/JP2666464B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、掃除機用電動送風機,ジューサミキサ等に
使用される整流子電動機、特にその軸の絶縁に関するも
のである。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a commutator motor used for an electric blower for a vacuum cleaner, a juicer mixer, and the like, and particularly to an insulation of a shaft thereof.

従来の技術 近年、整流子電動機の高性能化、高品質化が進み、中
でも高い絶縁性能を備えた整流子電動機が求められてい
る。従来の整流子電動機の回転子軸絶縁には、紙類にワ
ニス処理を施したものが使用されている。
2. Description of the Related Art In recent years, commutator motors have been improved in performance and quality, and among them, a commutator motor having high insulation performance has been demanded. For a rotor shaft insulation of a conventional commutator motor, a material obtained by performing a varnish treatment on paper is used.

以下、図面を参照しながら上述した従来の回転子軸絶
縁の一例について説明する。
Hereinafter, an example of the above-described conventional rotor shaft insulation will be described with reference to the drawings.

第5図,第6図,第7図,第8図は従来の回転子の軸
絶縁を示すものである。第6図において、1は電動機の
軸である。2は回転子鉄心(以下、鉄心と略す)で、軸
1に圧入されている。3はコイルで鉄心2のスロット内
に巻装されている。4は整流子でコイル3の巻線端が結
線されている。5は鉄心とコイル3との絶縁のためのイ
ンシュレータでコイル3が巻線される前に時装着され
る。6は軸1とコイル3との軸絶縁でインシュレータ5
が装着された後にコイル3が巻装される前に装着され
る。第5図において7は鉄心2のスロット部とコイル3
との絶縁のためのスロット絶縁である。
FIG. 5, FIG. 6, FIG. 7, and FIG. 8 show shaft insulation of a conventional rotor. In FIG. 6, reference numeral 1 denotes a motor shaft. Reference numeral 2 denotes a rotor core (hereinafter abbreviated as an iron core), which is press-fitted into the shaft 1. Reference numeral 3 denotes a coil wound around a slot of the iron core 2. Reference numeral 4 denotes a commutator to which the winding ends of the coil 3 are connected. Reference numeral 5 denotes an insulator for insulation between the iron core and the coil 3, which is sometimes attached before the coil 3 is wound. Reference numeral 6 denotes a shaft insulation between the shaft 1 and the coil 3 and an insulator 5
Is mounted and before the coil 3 is wound. In FIG. 5, reference numeral 7 denotes a slot of the iron core 2 and the coil 3.
Slot insulation for insulation with

まず、軸1に鉄心2を圧入し、インシュレータ5を装
着した後、軸絶縁6を装着し、そしてスロット絶縁7を
鉄心2のスロット部に挿入し、整流子4を軸1に圧入し
た後、鉄心2に巻線を行ないコイル3の巻線端を整流子
4に結線している。
First, the core 2 is press-fitted into the shaft 1, the insulator 5 is mounted, the shaft insulation 6 is mounted, and the slot insulation 7 is inserted into the slot of the core 2, and the commutator 4 is press-fitted into the shaft 1. The winding is wound on the iron core 2, and the winding end of the coil 3 is connected to the commutator 4.

発明が解決しようとする課題 しかしながら上記のような構成では、インシュレータ
5を軸1に沿って装着した後、軸絶縁6を軸1に沿って
装着しているが、この時、軸絶縁6の端面が変形してい
たり、バリがある場合、インシュレータ5と軸絶縁6と
の当接面に隙間ができ、軸1とコイル3との絶縁性が悪
くなる。軸絶縁6を先に装着し、その後インシュレータ
5を装着する方法もあるが、自動組立の場合、軸絶縁6
の外径にインシュレータ5を装着する時、軸絶縁6の端
面に引っ掛ってしまい装着が困難になる。また鉄心2の
スロット部にスロット絶縁7を挿入する際、インシュレ
ータ5を鉄心端面から浮かしてしまい、再度インシュレ
ータ5を装着しなければならないという問題があった。
However, in the above-described configuration, the insulator 5 is mounted along the shaft 1 and then the shaft insulation 6 is mounted along the shaft 1. Is deformed or has burrs, a gap is formed in the contact surface between the insulator 5 and the shaft insulation 6, and the insulation between the shaft 1 and the coil 3 deteriorates. There is also a method of mounting the shaft insulation 6 first and then mounting the insulator 5.
When the insulator 5 is mounted on the outer diameter of the shaft insulator 6, the insulator 5 is caught on the end face of the shaft insulation 6, and the mounting becomes difficult. Further, when inserting the slot insulator 7 into the slot portion of the iron core 2, there is a problem that the insulator 5 floats from the end face of the iron core and the insulator 5 must be mounted again.

また、インシュレータ5と軸絶縁6の表面は平滑であ
るため、コイル3との接触部分が多くコイル3の放熱を
悪くし温度上昇を高くする要因になっていた。
In addition, since the surfaces of the insulator 5 and the shaft insulation 6 are smooth, there are many contact portions with the coil 3, which causes deterioration of heat radiation of the coil 3 and increases temperature.

本発明は上記問題に鑑み、自動組立における作業性の
向上を図り、また絶縁性能を向上させ、巻線の温度上昇
の低減が図れる整流子電動機を提供するものである。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a commutator motor capable of improving workability in automatic assembly, improving insulation performance, and reducing a rise in temperature of a winding.

課題を解決するための手段 上記課題を解決するために本発明の軸絶縁、少なくと
も電機子軸と鉄心との間を樹脂により一体成形にモール
ドして形成する軸絶縁において、軸絶縁の鉄心外方の筒
部を鉄心側に向って太くなるテーパ状にし、又、この筒
部の外径に凹凸の溝を軸スラスト方向に沿って設けたも
のである。
Means for Solving the Problems In order to solve the above problems, in the shaft insulation of the present invention, at least the armature shaft and the iron core are integrally molded by molding with resin to form a shaft insulation, and Is formed in a tapered shape that becomes thicker toward the iron core side, and grooves having irregularities are provided along the axial thrust direction on the outer diameter of the cylindrical portion.

作用 本発明は上述した構成によって、樹脂により軸と鉄心
との間に樹脂が位置するように一体にモールドすること
により軸と鉄心の絶縁性能を向上させることができ、筒
部をテーパ状に形成することによりインシュレータの挿
入時の作業性を向上させ、軸絶縁とインシュレータとの
当接部における絶縁性の向上を図ることができる。さら
に軸絶縁の筒部外径に形成した凹凸部によってコイルが
接する部分を極力小さくすることができ巻線の温度上昇
を低減することができる。
The present invention can improve the insulation performance of the shaft and the iron core by integrally molding the resin and the resin so as to be located between the shaft and the iron core by the above-described configuration, and form the cylindrical portion into a tapered shape. By doing so, the workability at the time of inserting the insulator can be improved, and the insulation at the contact portion between the shaft insulation and the insulator can be improved. Further, the portion where the coil is in contact is reduced as much as possible by the uneven portion formed on the outer diameter of the cylindrical portion of the shaft insulation, and the temperature rise of the winding can be reduced.

実施例 以下本発明の第1の実施例の軸絶縁について、図面を
参照しながら説明する。
Embodiment A shaft insulation according to a first embodiment of the present invention will be described below with reference to the drawings.

第1図は本発明の実施例における巻線後の状態を示す
ものである。第1図において、1は電動機の軸である。
2は回転子の鉄心で軸1と一体に樹脂によりモールドさ
れている。3はコイルで鉄心2のスロット内に巻装され
ている。4は整流子でコイル3の端部が結線されてい
る。5は鉄心2とコイル3とのインシュレータである。
11は軸1と鉄心2、およびコイル3との樹脂からなる軸
絶縁である。第2図は本発明の第1の実施例における軸
絶縁11の筒部の形状を示すもので、樹脂により軸1の外
周に鉄心2の端面側に向かって径の大きいテーパ状にモ
ールドされている。
FIG. 1 shows a state after winding in an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a motor shaft.
Reference numeral 2 denotes an iron core of the rotor, which is integrally molded with the shaft 1 with resin. Reference numeral 3 denotes a coil wound around a slot of the iron core 2. Reference numeral 4 denotes a commutator to which the ends of the coil 3 are connected. Reference numeral 5 denotes an insulator between the iron core 2 and the coil 3.
Reference numeral 11 denotes shaft insulation made of resin for the shaft 1, the iron core 2, and the coil 3. FIG. 2 shows the shape of the cylindrical part of the shaft insulation 11 in the first embodiment of the present invention. I have.

まず、軸1と鉄心2とを樹脂により軸絶縁11とともに
一体にモールドし、インシュレータ5を装着し、スロッ
ト絶縁7を鉄心2のスロット部に挿入し整流子4を軸1
に圧入した後で巻線を行ない、コイル3の巻線端を整流
子4に結線している。インシュレータ5を装着する際、
軸絶縁11がテーパ状になっている為、軸絶縁11に引っ掛
かることなく装着することができる。また軸絶縁11がテ
ーパ状になっているため鉄心側ではインシュレータ5を
圧入する状態となるのでコイル3と鉄心2との絶縁性能
を高めることができる。
First, the shaft 1 and the iron core 2 are integrally molded with resin together with the shaft insulation 11, the insulator 5 is mounted, the slot insulation 7 is inserted into the slot of the iron core 2, and the commutator 4 is mounted on the shaft 1.
The coil 3 is connected to the commutator 4 by winding. When installing the insulator 5,
Since the shaft insulation 11 is tapered, it can be mounted on the shaft insulation 11 without being caught. In addition, since the shaft insulation 11 is tapered, the insulator 5 is press-fitted on the iron core side, so that the insulation performance between the coil 3 and the iron core 2 can be improved.

以上のように本実施例によれば、軸絶縁を樹脂により
テーパ状にモールドすることによりインシュレータ5の
自動組立による装着が容易にでき、軸絶縁11の外径とイ
ンシュレータ5の内径の隙間がなくなるため絶縁性能を
向上させることができる。
As described above, according to the present embodiment, by mounting the shaft insulation in a tapered shape with resin, the insulator 5 can be easily mounted by automatic assembly, and the gap between the outer diameter of the shaft insulation 11 and the inner diameter of the insulator 5 is eliminated. Therefore, insulation performance can be improved.

次に本発明の第2の実施例について、図面を参照しな
がら説明する。第3図は本発明の第2の実施例における
軸絶縁の筒部を示すものである。第3図において22は軸
1と一体成形された軸絶縁であり第1図の構成と同様な
ものである。第1図の構成と異なるのは、軸絶縁22の筒
部の外径側に凹凸よりなる溝23を軸方向に形成し、コイ
ル3との接触面積が少なくなる様にした点である。上記
のように筒部の外径側に凸部を設けた軸絶縁を軸と一体
成形することによりコイルとの接触は凸部のみとなり接
触面積を大幅に少なくすることができ巻線の温度上昇を
低くおさえることができる。なお、本実施例において筒
部の外径側の凹凸溝23は連続的な形状としたが断続的な
形状としてもよい。
Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 shows a shaft-insulated cylindrical portion according to a second embodiment of the present invention. In FIG. 3, reference numeral 22 denotes a shaft insulation integrally formed with the shaft 1, which has the same structure as that of FIG. The difference from the configuration of FIG. 1 is that grooves 23 made of irregularities are formed in the axial direction on the outer diameter side of the cylindrical portion of the shaft insulation 22 so that the contact area with the coil 3 is reduced. As described above, the shaft insulation with the convex portion provided on the outer diameter side of the cylindrical portion is integrally formed with the shaft, so that the contact with the coil is limited to the convex portion and the contact area can be greatly reduced, and the temperature of the winding rises Can be kept low. In the present embodiment, the concave and convex grooves 23 on the outer diameter side of the cylindrical portion have a continuous shape, but may have an intermittent shape.

発明の効果 以上のように本発明は樹脂により少なくとも軸と鉄心
との間を一体にモールドして軸絶縁を形成することによ
り、軸と鉄心とを絶縁し、軸絶縁の鉄心外方の筒部を鉄
心側に向かって太くなるテーパ形状に成形することによ
り、自動組立におけるインシュレータ挿入の作業性を向
上させることができ、インシュレータとの当接面の隙間
をなくすことにより絶縁性能の向上を図ることができ
る。また、軸絶縁の筒部の外径側に凹凸溝を設け、コイ
ルとの接触部分を少なくすることにより電動機の温度上
昇を低くすることができ、より信頼性の高い電動機を提
供することができる。さらに温度上昇を同じにするなら
ば、より大出力のあるいはコストの安い電動機を提供す
ることができる。
Effect of the Invention As described above, the present invention insulates the shaft and the iron core by integrally molding at least the shaft and the iron core with the resin to form the shaft insulation, and the outer cylindrical portion of the shaft insulating core. By forming the taper into a tapered shape that becomes thicker toward the iron core, it is possible to improve the workability of inserting the insulator in automatic assembly, and to improve the insulation performance by eliminating the gap between the contact surface with the insulator. Can be. In addition, by providing an uneven groove on the outer diameter side of the cylindrical portion of the shaft insulation and reducing the contact portion with the coil, the temperature rise of the electric motor can be reduced, and a more reliable electric motor can be provided. . Further, if the temperature rise is made the same, it is possible to provide a motor with higher output or lower cost.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本発明の第1の実施例における回転子の巻線後
の状態を示した半断面図、第2図は本発明の第1の実施
例における軸絶縁の筒部の斜視図、第3図は本発明の第
2の実施例における軸絶縁の筒部の斜視図、第4図は第
3図のA方面から見た平面図、第5図はスロット絶縁の
斜視図、第6図は従来の実施例における回転子の巻線後
の状態を示した半断面図、第7図は従来の実施例におけ
るインシュレータの斜視図、第8図は従来の実施例にお
ける軸絶縁の斜視図である。 1……軸、2……鉄心、3……コイル、5……エンドイ
ンシュレータ、11……軸絶縁、23……筒部の外径側の凹
凸溝。
FIG. 1 is a half sectional view showing a state after winding of a rotor according to a first embodiment of the present invention, FIG. 2 is a perspective view of a shaft insulating tubular portion according to the first embodiment of the present invention, FIG. 3 is a perspective view of a shaft-insulated cylindrical portion according to a second embodiment of the present invention, FIG. 4 is a plan view seen from the direction A in FIG. 3, FIG. FIG. 1 is a half sectional view showing a state after winding of a rotor in a conventional embodiment, FIG. 7 is a perspective view of an insulator in a conventional embodiment, and FIG. 8 is a perspective view of shaft insulation in a conventional embodiment. It is. 1 ... shaft, 2 ... iron core, 3 ... coil, 5 ... end insulator, 11 ... shaft insulation, 23 ... concave and convex grooves on the outer diameter side of the cylindrical portion.

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】電動機の回転子鉄心及びこの回転子鉄心に
巻かれた電機子巻線を軸から絶縁するために少なくとも
回転子鉄心と軸との間を樹脂により一体にモールドして
形成した軸絶縁において、前記軸絶縁の回転子鉄心外方
の筒部を鉄心側に向って太くなるテーパ状とした整流子
の電動機の軸絶縁。
A shaft formed by integrally molding at least a portion between a rotor core and a shaft with a resin in order to insulate a rotor core of an electric motor and an armature winding wound on the rotor core from the shaft. In the insulation, the shaft insulation of a commutator motor having a tapered shape in which a cylindrical portion outside the rotor core of the shaft insulation becomes thicker toward the iron core.
【請求項2】軸絶縁の回転子鉄心外方の筒部の外径に凹
凸の溝を軸スラスト方向に沿って設けた請求項1記載の
整流子電動機の軸絶縁。
2. The shaft insulation of a commutator motor according to claim 1, wherein an uneven groove is provided along the axial thrust direction on the outer diameter of the cylindrical portion outside the rotor core of the shaft insulation.
JP1095727A 1989-04-14 1989-04-14 Commutator motor shaft insulation Expired - Fee Related JP2666464B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1095727A JP2666464B2 (en) 1989-04-14 1989-04-14 Commutator motor shaft insulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1095727A JP2666464B2 (en) 1989-04-14 1989-04-14 Commutator motor shaft insulation

Publications (2)

Publication Number Publication Date
JPH02273060A JPH02273060A (en) 1990-11-07
JP2666464B2 true JP2666464B2 (en) 1997-10-22

Family

ID=14145508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1095727A Expired - Fee Related JP2666464B2 (en) 1989-04-14 1989-04-14 Commutator motor shaft insulation

Country Status (1)

Country Link
JP (1) JP2666464B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10250142B4 (en) * 2002-10-28 2013-06-27 Maxon Motor Ag Ground-fault-proof DC electric motor

Also Published As

Publication number Publication date
JPH02273060A (en) 1990-11-07

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