JPS5836157A - Small and thin dc motor - Google Patents
Small and thin dc motorInfo
- Publication number
- JPS5836157A JPS5836157A JP13286181A JP13286181A JPS5836157A JP S5836157 A JPS5836157 A JP S5836157A JP 13286181 A JP13286181 A JP 13286181A JP 13286181 A JP13286181 A JP 13286181A JP S5836157 A JPS5836157 A JP S5836157A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- pair
- permanent magnets
- rotor
- stator
- 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.)
- Pending
Links
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 239000000696 magnetic material Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/17—Stator cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Dc Machiner (AREA)
Abstract
Description
【発明の詳細な説明】
近年情報機器或いは端末器は小型薄型化の方向にあり、
それに伴ってモータを使用するそれ等においては、モー
タの小型薄型化の要請が強い。それを達成するには、モ
ータの形状として偏平型（円盤状）と円筒型の２種が考
えられるが、本発明は特に円筒型の直流モータに関する
ものである。[Detailed Description of the Invention] In recent years, information devices or terminals are becoming smaller and thinner.
Accordingly, there is a strong demand for smaller and thinner motors in devices that use motors. To achieve this, two types of motor shapes can be considered: a flat type (disk shape) and a cylindrical type, and the present invention particularly relates to a cylindrical DC motor.
従来からの円筒型直流モータで薄型化を推し進めると、
回転子の直径が小さくなり、そのため出力が低下し、消
費電流が増加し、それを用いた機器の低消費電力化を図
れないという欠点があった。By making the conventional cylindrical DC motor thinner,
The diameter of the rotor becomes smaller, resulting in lower output and increased current consumption, which has the drawback of making it impossible to reduce the power consumption of equipment using it.
本発明は特に機器の薄型化、低消費電力化を目的として
いるもので、前述の従来の円筒型直流モータの欠点を除
去するもので、主として固定子側の構成に係るものであ
り、直流モータの回転子を受ける一対のブラケット、該
ブラ夛ソトを受ける円筒状磁性材フレーム、該フレーム
の外側に望ましくは一対の永久磁石、該永久磁石をはさ
むコの字状ヨークとで構成される。以下では本発明を図
面に基いて説明する。The present invention is particularly aimed at making equipment thinner and lowering power consumption, and is intended to eliminate the drawbacks of the conventional cylindrical DC motor mentioned above, and mainly relates to the stator side configuration. The rotor is comprised of a pair of brackets for receiving the rotor, a cylindrical magnetic frame for receiving the rotor, a pair of permanent magnets preferably placed on the outside of the frame, and a U-shaped yoke sandwiching the permanent magnets. The present invention will be explained below based on the drawings.
第１図は従来からの円筒状直流モータの断面図を示す。FIG. 1 shows a cross-sectional view of a conventional cylindrical DC motor.
第２図は本発明の固定子側の主構造を示す斜視図、第３
図は本発明の固定子側の断面図を示す、第４図は本発明
に用いられる回転子の形状、一対のプラケットの構造を
示す斜視図、第５図はブラシをかねる端子板の形状を示
す斜視図である。Figure 2 is a perspective view showing the main structure on the stator side of the present invention;
The figure shows a sectional view of the stator side of the present invention, Figure 4 is a perspective view showing the shape of the rotor used in the present invention and the structure of a pair of plackets, and Figure 5 shows the shape of the terminal plate that also serves as a brush. FIG.
第１図において、１は回転子軸、２は回転子（詳細は図
示せず）、６は円筒状の直径方向に着磁される永久磁石
、４は磁性材からなる円筒状のフレーム、５は外径の大
きさを示すものである。In FIG. 1, 1 is a rotor shaft, 2 is a rotor (details not shown), 6 is a permanent magnet magnetized in the diameter direction of a cylinder, 4 is a cylindrical frame made of magnetic material, 5 indicates the size of the outer diameter.
図から明らかなように、外径５を縮小して来ると、回転
子２の外径が当然小さくなるので、回転子外径をＤ、そ
の長さをＬとすると、モータ出力はほぼＤ２ Ｌできま
るので、モータ出力は低下する。As is clear from the figure, when the outer diameter 5 is reduced, the outer diameter of the rotor 2 naturally becomes smaller, so if the rotor outer diameter is D and its length is L, the motor output is approximately D2 L As a result, the motor output decreases.
また、結合係数も小さくなるから、モータの変換効率も
低下し、消費電流が当然増加して来る。このようにモー
タの小型化、或いは薄型化によってはモータ特性は何等
向上させられないことは明らかである。Furthermore, since the coupling coefficient becomes smaller, the conversion efficiency of the motor also decreases, and the current consumption naturally increases. It is clear that the motor characteristics cannot be improved by making the motor smaller or thinner.
第２０図は本発明の固定子側の斜視図であり、６は筒状
の磁性材からなるフレーム、７はコの字状のヨーク、８
．９は矩形状の一対の永久磁石である。FIG. 20 is a perspective view of the stator side of the present invention, where 6 is a cylindrical frame made of magnetic material, 7 is a U-shaped yoke, and 8 is a perspective view of the stator side of the present invention.
．． 9 is a pair of rectangular permanent magnets.
フレーム・６は永久磁石８．９の中性軸Ｙ軸に沿って一
対６ａ、６ｂのようにスリットが形成されているが、こ
れは薄肉部としてもよい。また、中性軸Ｙと平行にフレ
ーム・６の外周に、Ｙ軸と９０°をなすＸ軸とほぼ直角
に平担部６Ｃ１６ｄを設けろ。矩形状の永久磁石８．９
は前述の平担部６Ｃ５６ｄに接着され、永久磁石８．９
の外側にモータ軸と平行に°コの字状ヨーク７が配設さ
れる。永久磁石８．９は望ましくは高エネルギー積のレ
ア・アースメタル磁石、その拐質を用いたゴム磁石、プ
ラスチック磁石でもよい。The frame 6 has a pair of slits 6a and 6b formed along the neutral axis Y-axis of the permanent magnet 8.9, but these may be formed as thin-walled portions. Also, provide a flat support portion 6C16d on the outer periphery of the frame 6 parallel to the neutral axis Y, and approximately perpendicular to the X axis, making a 90° angle with the Y axis. Rectangular permanent magnet 8.9
is glued to the above-mentioned flat part 6C56d, and the permanent magnet 8.9
A U-shaped yoke 7 is disposed on the outside of the motor in parallel with the motor shaft. The permanent magnets 8.9 may preferably be high energy product rare earth metal magnets, rubber magnets using their particles, or plastic magnets.
第３図において、永久磁石８．９によって励磁された磁
束１１は回転子１０を矢印のように通過して、ヨーク７
ａ、７ｂを通って閉磁路が形成される。In FIG. 3, the magnetic flux 11 excited by the permanent magnet 8.9 passes through the rotor 10 as shown by the arrow, and the yoke 7.
A closed magnetic path is formed through a and 7b.
第４図において、１０は回転子、１２は整流子、１３は
回転子軸、１４．１５は一対のプラケット、１６．１“
７は軸受け、１８．１９はブラシをかねる端子板である
。図示の回転子１０は３スロツト、鉄芯型であるが、ス
、ロット数は５．７など限定する必要がないことは明ら
かである。回転子１０は一対のプラケット１４．１５の
中に設けられた軸受１６．１７で支持され、前記プラケ
ット１４．１５は第２図のフレーム６の軸方向の両端に
正大保持される。In FIG. 4, 10 is a rotor, 12 is a commutator, 13 is a rotor shaft, 14.15 is a pair of plackets, 16.1"
7 is a bearing, and 18 and 19 are terminal plates that also serve as brushes. Although the illustrated rotor 10 has three slots and is of an iron core type, it is clear that the number of slots does not need to be limited to 5.7. The rotor 10 is supported by bearings 16.17 provided in a pair of brackets 14.15, and the brackets 14.15 are held at both ends of the frame 6 in the axial direction in FIG.
第５図はブラシをかねる端子板１８で先端部で整流子と
当接される部分１８ａには貴金属をクラッドしたもので
よく全体でブラシのばねとしても機能するものでよい。FIG. 5 shows a terminal plate 18 which also serves as a brush, and the tip portion 18a which comes into contact with the commutator may be clad with a precious metal, and the entire terminal plate may also function as a brush spring.
本発明による作用効果は次のようになる。応用しようと
する機器が許容する厚みまでモータ厚み（第３図の２０
）を抑えても、従来のモータと比較して回転子外径は小
さくしなくて済むので、モータ出力はひどくは低下せず
、従って変換効率も低下せず、消費電流も増加させない
で済むことは明らかである。The effects of the present invention are as follows. Adjust the motor thickness (20
), the rotor outer diameter does not need to be made smaller compared to conventional motors, so the motor output does not drop significantly, therefore the conversion efficiency does not drop, and the current consumption does not increase. is clear.
また、本発明によるフレームは、内周部は円形であるか
ら、圧入するプラケットの軸受中心が出しやすく、フレ
ーム内周と外転子外径できまる空隙を可能な限り極少に
でき結合係数が増加し変換効率が向上する。（従来モー
タセは永久磁石の寸法精度が出し難く、空隙を太き目に
とらざるを得ない）
更に、永久磁石は矩形状であるから加工が簡単で寸法精
度は余り必要でなく一次加工のみで済み、永久磁石の調
達コストを低減できる。また、高エネルギー積永久磁石
は一般に加工が容易でないが形状が単純であるから、エ
ネルギー積２５〜３０［ＭＯ６ｅ）のものも容易に利用
できる。また、永久磁石をゴムまたはプラスチック充填
材入りのものとするときは、モータの振動を遮断すると
いう効果もあり、機器の騒音を低減することができる。In addition, since the frame according to the present invention has a circular inner periphery, the center of the bearing of the press-fitted placket can be easily exposed, and the gap defined by the inner periphery of the frame and the outer diameter of the outer rotor can be minimized as much as possible, increasing the coupling coefficient. This improves conversion efficiency. (Conventionally, it is difficult to achieve the dimensional accuracy of the permanent magnet in a motor separator, and the air gap must be widened.) Furthermore, since the permanent magnet is rectangular, it is easy to process, and dimensional accuracy is not necessary, so only the primary processing is required. It is possible to reduce the procurement cost of permanent magnets. In addition, high-energy product permanent magnets are generally not easy to process but have a simple shape, so those with an energy product of 25 to 30 [MO6e] can also be easily used. Furthermore, when the permanent magnet is made of rubber or plastic filler, it has the effect of blocking vibrations of the motor, and it is possible to reduce the noise of the equipment.
この場合はコの字型ヨークで機器へ保持するものである
。In this case, a U-shaped yoke is used to hold the device to the device.
また、本発明の基本構造はコアレスモータへの応用も可
能であることは明らかである。Furthermore, it is clear that the basic structure of the present invention can also be applied to coreless motors.
本発明の直流小型薄型モータは小型薄型機器に応用して
用途としては音響機器、携帯用のサーマルプリンタなど
広く、且つ簡単な構造でコストも安く、特に薄型の割に
は高効率低消電が実現できるのでその実用効果は顕著で
ある。The compact DC thin motor of the present invention can be applied to small and thin devices, such as audio equipment and portable thermal printers, and has a simple structure and low cost.In particular, it has high efficiency and low power consumption for its thin size. Since it can be realized, its practical effect is remarkable.
第１図は従来の円筒型直流モータの断面図。第２図は本
発明の小型薄型直流モータの固定子側の斜視図。第３図
は本発明の小型薄型直流モータの固定子側の断面図。第
４図は本発明の小型薄型直流モータに用いられる回転子
、ブラケットを示す斜視図。第５図は本発明の小型薄型
直流モータに用いられるブラシをかねる端子板の形状を
示す斜視図である。
１・・・・・・・・・・・・・・・・・・回転子軸２・
・・・・・・・・・・・・・・・・・回転子６・・・・
・・・・・・・・・・・・・・円筒状永久磁石４・・・
・・・・・・・・・・・・・・・円筒状フレーム５・・
・・・・・・・・・・・・・・・・モータ外径６・・・
・・・・・・・・・・・・・・・円筒状フレーム６ａ、
６ｂ・・・・・・スリン ト部
６ｃ、６ｄ・・・・・・外周平担部
７・・・・・・・・・・・・・・・・・コの字状ヨーク
７ａ、７ｂ・・・・・・コの字状ヨーク先端部８．９・
・・・・・・・・・・矩形状永久磁石１０・・・・・・
・・・・・・・・・回転子１１・・・・・・・・・・・
・・・・永久磁石による磁束１２・・・・・・・・・・
・・・・・整流子１３・・・・・・・・・・・・・・・
回転子軸１４．１５・・・・・・ブラケット
１６．１７・・・・・・軸 受
１８．１９・・・・・・ブラシをかねる端子板１８ａ・
・・・・・・・・・・・整流子当接部２０・・・・・・
・・・・・・・・・モータ厚み第１図
第２図
牛
ｅｂ
第３図
■FIG. 1 is a sectional view of a conventional cylindrical DC motor. FIG. 2 is a perspective view of the stator side of the small and thin DC motor of the present invention. FIG. 3 is a sectional view of the stator side of the small, thin DC motor of the present invention. FIG. 4 is a perspective view showing the rotor and bracket used in the small and thin DC motor of the present invention. FIG. 5 is a perspective view showing the shape of a terminal plate serving as a brush used in the small and thin DC motor of the present invention. １・・・・・・・・・・・・・・・Rotor shaft 2・
・・・・・・・・・・・・・・・Rotor 6・・・・
・・・・・・・・・・・・・・・Cylindrical permanent magnet 4...
・・・・・・・・・・・・・・・Cylindrical frame 5...
・・・・・・・・・・・・・・・Motor outer diameter 6...
.........Cylindrical frame 6a,
6b... Slint portions 6c, 6d... Outer peripheral flattened portion 7... U-shaped yokes 7a, 7b. ... U-shaped yoke tip 8.9.
...... Rectangular permanent magnet 10...
・・・・・・Rotor 11・・・・・・・・・・・・
...Magnetic flux 12 due to permanent magnet...
・・・・・・Commutator 13・・・・・・・・・・・・・・・
Rotor shaft 14.15... Bracket 16.17... Bearing 18.19... Terminal plate 18a which also serves as a brush.
...... Commutator contact portion 20...
・・・・・・・・・Motor thickness Fig. 1 Fig. 2 Cow eb Fig. 3 ■
Claims (2)
、該ブラケットを受け、かつ、スリットを形成した円筒
状磁性材フレームと、該フレームの外側に少なくとも一
対の永久磁石と、コの字状ヨークを設け、前記コの字状
ヨークで閉磁路を構成したことを特徴とする小型薄型直
流モータ。(1) A pair of brackets that receive the rotor of a DC motor, a cylindrical magnetic material frame that receives the brackets and has a slit formed therein, at least one pair of permanent magnets on the outside of the frame, and a U-shaped yoke. A small, thin DC motor characterized in that the U-shaped yoke constitutes a closed magnetic path.
肉またはスリットを対向する如く一対設け、該中性軸と
９０°異なる直径方向に中性軸と平行に外周部に平担部
を設け、翼形状永久磁石を少なくとも一対設け、該永久
磁石を、モータ軸と平行なコの字状ヨークで挟持したこ
とを特徴とする特許請求の範囲第１項記載の小型薄型直
流モータ。(2) The cylindrical frame has a pair of thin walls or slits facing each other in the diametrical direction near the neutral axis, and a flat part is provided on the outer periphery parallel to the neutral axis in a diametrical direction that is 90 degrees different from the neutral axis. 2. The small-sized thin DC motor according to claim 1, further comprising at least one pair of wing-shaped permanent magnets, the permanent magnets being sandwiched between U-shaped yokes parallel to the motor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13286181A JPS5836157A (en) | 1981-08-25 | 1981-08-25 | Small and thin dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13286181A JPS5836157A (en) | 1981-08-25 | 1981-08-25 | Small and thin dc motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5836157A true JPS5836157A (en) | 1983-03-03 |
Family
ID=15091244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13286181A Pending JPS5836157A (en) | 1981-08-25 | 1981-08-25 | Small and thin dc motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5836157A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6041484U (en) * | 1983-08-31 | 1985-03-23 | 松下電工株式会社 | folding door |
| JPS6238398U (en) * | 1985-03-16 | 1987-03-06 | ||
| JPS6240172U (en) * | 1985-08-29 | 1987-03-10 |
-
1981
- 1981-08-25 JP JP13286181A patent/JPS5836157A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6041484U (en) * | 1983-08-31 | 1985-03-23 | 松下電工株式会社 | folding door |
| JPH0311346Y2 (en) * | 1983-08-31 | 1991-03-19 | ||
| JPS6238398U (en) * | 1985-03-16 | 1987-03-06 | ||
| JPH0515040Y2 (en) * | 1985-03-16 | 1993-04-21 | ||
| JPS6240172U (en) * | 1985-08-29 | 1987-03-10 |
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