JPH08126233A - Permanent magnet type motor - Google Patents
Permanent magnet type motorInfo
- Publication number
- JPH08126233A JPH08126233A JP6253481A JP25348194A JPH08126233A JP H08126233 A JPH08126233 A JP H08126233A JP 6253481 A JP6253481 A JP 6253481A JP 25348194 A JP25348194 A JP 25348194A JP H08126233 A JPH08126233 A JP H08126233A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- electric motor
- yoke
- adhesive
- magnet type
- 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.)
- Withdrawn
Links
- 239000006247 magnetic powder Substances 0.000 claims abstract description 12
- 239000000853 adhesive Substances 0.000 claims description 23
- 230000001070 adhesive effect Effects 0.000 claims description 23
- 230000004907 flux Effects 0.000 abstract description 7
- 230000035699 permeability Effects 0.000 abstract description 5
- 239000007767 bonding agent Substances 0.000 abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ヨークに永久磁石が接
着剤で固定されている永久磁石式電動機に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet type electric motor in which a permanent magnet is fixed to a yoke with an adhesive.
【０００２】[0002]
【従来の技術】図４及び図５は、従来のアウターロータ
型の永久磁石式電動機のロータを示したものである。即
ち、従来のアウターロータ型の永久磁石式電動機のロー
タは、筒部１ａの一端が底部１ｂで閉塞されているカッ
プ状のロータヨーク１の該筒部１ａの内周に環状の永久
磁石２が接着剤３で固定されていた。なお、４はロータ
ヨーク１の底部１ｂの中央に取付けられているロータシ
ャフトである。2. Description of the Related Art FIGS. 4 and 5 show a rotor of a conventional outer rotor type permanent magnet type electric motor. That is, in the rotor of the conventional outer rotor type permanent magnet electric motor, the annular permanent magnet 2 is bonded to the inner circumference of the tubular portion 1a of the cup-shaped rotor yoke 1 in which one end of the tubular portion 1a is closed by the bottom portion 1b. It was fixed with Agent 3. Reference numeral 4 is a rotor shaft attached to the center of the bottom portion 1b of the rotor yoke 1.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うなヨーク１に永久磁石２を接着剤３で固定した従来の
永久磁石式電動機では、次のような問題点があった。However, the conventional permanent magnet type electric motor in which the permanent magnet 2 is fixed to the yoke 1 with the adhesive 3 has the following problems.
【０００４】（１）接着剤３を付着させるために、ヨー
ク１と永久磁石２との間に隙間が必要になる。(1) A space is required between the yoke 1 and the permanent magnet 2 to attach the adhesive 3.
【０００５】（２）個の隙間を接着剤３で充填するが、
接着剤３は透磁率が低く、磁気抵抗が大きいため、漏れ
磁束が大きい。(2) The gap 3 is filled with the adhesive 3,
Since the adhesive 3 has a low magnetic permeability and a large magnetic resistance, the leakage flux is large.
【０００６】（３）漏れ磁束が大きいと、電動機の効率
が低下する。(3) If the leakage magnetic flux is large, the efficiency of the electric motor is reduced.
【０００７】本発明の目的は、接着剤の使用による問題
点を解決できる永久磁石式電動機を提供することにあ
る。An object of the present invention is to provide a permanent magnet type electric motor which can solve the problems caused by the use of an adhesive.
【０００８】[0008]
【課題を解決するための手段】本発明は、ヨークに永久
磁石が接着剤で固定されている永久磁石式電動機を改良
の対象としている。SUMMARY OF THE INVENTION The present invention is directed to an improvement of a permanent magnet type electric motor in which a permanent magnet is fixed to a yoke with an adhesive.
【０００９】本発明に係る永久磁石式電動機において
は、前記接着剤として磁性粉末が混入されたものが使用
されていることを特徴とする。The permanent magnet type electric motor according to the present invention is characterized in that a magnetic powder is mixed as the adhesive.
【００１０】また本発明は、ヨークの内周に環状をなす
永久磁石が接着剤で固定されている永久磁石式電動機を
改良の対象としている。Further, the present invention is directed to an improvement of a permanent magnet type electric motor in which an annular permanent magnet is fixed to the inner circumference of a yoke with an adhesive.
【００１１】本発明に係る永久磁石式電動機において
は、前記接着剤として磁性粉末が混入されたものが使用
されていることを特徴とする。The permanent magnet type electric motor according to the present invention is characterized in that a magnetic powder is mixed as the adhesive.
【００１２】[0012]
【作用】このように磁性粉末が混入された接着剤を用い
ると、該接着剤の透磁率が高くなり、磁気抵抗が小さく
なる。このためヨークと永久磁石との間の隙間からの漏
れ磁束が少なくなり、電動機の効率が向上する。When the adhesive mixed with magnetic powder is used, the magnetic permeability of the adhesive is increased and the magnetic resistance is decreased. Therefore, the leakage magnetic flux from the gap between the yoke and the permanent magnet is reduced, and the efficiency of the electric motor is improved.
【００１３】[0013]
【実施例】図１及び図２は、本発明に係る永久磁石式電
動機の第１実施例を示したものである。本実施例は、ア
ウターロータ型のブラシレス永久磁石式電動機のロータ
に本発明を適用した例を示したものである。1 and 2 show a first embodiment of a permanent magnet type electric motor according to the present invention. This embodiment shows an example in which the present invention is applied to a rotor of an outer rotor type brushless permanent magnet electric motor.
【００１４】本実施例のアウターロータ型の永久磁石式
電動機のロータにおいては、筒部１ａの一端が底部１ｂ
で閉塞されているロータヨーク１の該筒部１ａの内周に
環状をなす永久磁石２が、磁性粉末が混入された接着剤
３ａにて固定されている。In the rotor of the outer rotor type permanent magnet type electric motor of this embodiment, one end of the cylindrical portion 1a is the bottom portion 1b.
An annular permanent magnet 2 is fixed to the inner periphery of the cylindrical portion 1a of the rotor yoke 1 which is closed by an adhesive 3a mixed with magnetic powder.
【００１５】このように磁性粉末が混入された接着剤３
ａを用いると、該接着剤３ａの透磁率が高くなり、磁気
抵抗が小さくなる。このためロータヨーク１の筒部１ａ
と環状の永久磁石２との間の隙間からの漏れ磁束が少な
くなり、電動機の効率が向上する。The adhesive 3 in which the magnetic powder is mixed in this way
When a is used, the magnetic permeability of the adhesive 3a increases and the magnetic resistance decreases. Therefore, the cylindrical portion 1a of the rotor yoke 1
The leakage flux from the gap between the ring-shaped permanent magnet 2 and the ring-shaped permanent magnet 2 is reduced, and the efficiency of the electric motor is improved.
【００１６】図３は、本発明に係る永久磁石式電動機の
第２実施例を示したものである。本実施例は、インナー
ロータ型の永久磁石式電動機のステータ５に本発明を適
用した例を示したものである。FIG. 3 shows a second embodiment of the permanent magnet type electric motor according to the present invention. This embodiment shows an example in which the present invention is applied to the stator 5 of the inner rotor type permanent magnet type electric motor.
【００１７】本実施例のインナーロータ型の永久磁石式
電動機のステータ５においては、ステータヨーク１の筒
部１ａの内周に環状をなす永久磁石２が、磁性粉末が混
入された接着剤３ａにて固定されている。In the stator 5 of the inner rotor type permanent magnet type electric motor of this embodiment, the annular permanent magnet 2 is formed on the inner circumference of the cylindrical portion 1a of the stator yoke 1 in the adhesive 3a mixed with magnetic powder. It is fixed.
【００１８】該電動機のロータ６は、鉄心７の各突極に
コイル８が巻装され、そのロータシャフト９がステータ
ヨーク１の端板１０に軸受１１で回転自在に支持された
構造になっている。The rotor 6 of the electric motor has a structure in which a coil 8 is wound around each salient pole of an iron core 7, and a rotor shaft 9 thereof is rotatably supported by a bearing 11 on an end plate 10 of a stator yoke 1. There is.
【００１９】このような構造の永久磁石式電動機でも第
１実施例と同様の効果を得ることができる。With the permanent magnet type electric motor having such a structure, the same effect as that of the first embodiment can be obtained.
【００２０】なお、環状をなす永久磁石２としては、一
体もので環状をなしているものでも、分割されていてヨ
ーク１に取付けられた状態で環状をなすものでも、いず
れでもよい。The ring-shaped permanent magnet 2 may be either a unitary ring-shaped permanent magnet or a ring-shaped permanent magnet 2 attached to the yoke 1.
【００２１】また、本発明は前述した各実施例に限定さ
れるものではなく、例えばブラシ付き永久磁石式電動
機，永久磁石式同期電動機等にも適用できるものであ
る。The present invention is not limited to the above-mentioned embodiments, but can be applied to, for example, a permanent magnet type electric motor with a brush or a permanent magnet type synchronous electric motor.
【００２２】[0022]
【発明の効果】本発明に係る永久磁石式電動機において
は、ヨークに永久磁石を固定する接着剤として磁性粉末
が混入されたものを使用したので、該接着剤の透磁率が
高くなり、磁気抵抗を小さくすることができ、このため
ヨークと永久磁石との間の隙間からの漏れ磁束が少なく
なり、電動機の効率を向上させることができる。In the permanent magnet type electric motor according to the present invention, since the magnetic powder is mixed as the adhesive for fixing the permanent magnet to the yoke, the magnetic permeability of the adhesive is increased and the magnetic resistance is increased. Can be made smaller, so that the leakage magnetic flux from the gap between the yoke and the permanent magnet is reduced, and the efficiency of the electric motor can be improved.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明に係る永久磁石式電動機の第１実施例の
要部縦断面図である。FIG. 1 is a longitudinal cross-sectional view of a main part of a first embodiment of a permanent magnet type electric motor according to the present invention.
【図２】図１に示す永久磁石式電動機の要部正面図であ
る。FIG. 2 is a front view of a main part of the permanent magnet type electric motor shown in FIG.
【図３】本発明に係る永久磁石式電動機の第２実施例の
縦断面図を示したものである。FIG. 3 is a vertical sectional view of a second embodiment of the permanent magnet type electric motor according to the present invention.
【図４】従来の永久磁石式電動機の要部縦断面図であ
る。FIG. 4 is a longitudinal sectional view of a main part of a conventional permanent magnet type electric motor.
【図５】図４に示す永久磁石式電動機の要部正面図であ
る。5 is a front view of a main part of the permanent magnet type electric motor shown in FIG.
１ ヨーク ２ 永久磁石 ３，３ａ 接着剤 ４ シャフト 1 yoke 2 permanent magnet 3, 3a adhesive 4 shaft
Claims (2)
いる永久磁石式電動機において、 前記接着剤として磁性粉末が混入されたものが使用され
ていることを特徴とする永久磁石式電動機。1. A permanent magnet electric motor in which a permanent magnet is fixed to a yoke with an adhesive, wherein a magnetic powder is mixed as the adhesive.
着剤で固定されている永久磁石式電動機において、 前記接着剤として磁性粉末が混入されたものが使用され
ていることを特徴とする永久磁石式電動機。2. A permanent magnet type electric motor in which an annular permanent magnet is fixed to an inner circumference of a yoke with an adhesive, wherein a magnetic powder is mixed as the adhesive. Permanent magnet type electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6253481A JPH08126233A (en) | 1994-10-19 | 1994-10-19 | Permanent magnet type motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6253481A JPH08126233A (en) | 1994-10-19 | 1994-10-19 | Permanent magnet type motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08126233A true JPH08126233A (en) | 1996-05-17 |
Family
ID=17251987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6253481A Withdrawn JPH08126233A (en) | 1994-10-19 | 1994-10-19 | Permanent magnet type motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08126233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010068709A (en) * | 2008-09-08 | 2010-03-25 | Johnson Electric Sa | Electric motor |
-
1994
- 1994-10-19 JP JP6253481A patent/JPH08126233A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010068709A (en) * | 2008-09-08 | 2010-03-25 | Johnson Electric Sa | Electric motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020115 |