JPS62181651A - Small-sized dc motor and its winding method - Google Patents
Small-sized dc motor and its winding methodInfo
- Publication number
- JPS62181651A JPS62181651A JP22044985A JP22044985A JPS62181651A JP S62181651 A JPS62181651 A JP S62181651A JP 22044985 A JP22044985 A JP 22044985A JP 22044985 A JP22044985 A JP 22044985A JP S62181651 A JPS62181651 A JP S62181651A
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- Prior art keywords
- commutator
- coil
- slots
- winding
- coils
- Prior art date
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Links
- 238000004804 winding Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000005405 multipole Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Dc Machiner (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、ステータとして、複数個の永久磁石をもつ多
極の小型直流モータとその巻線方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a small multi-pole DC motor having a plurality of permanent magnets as a stator, and a winding method thereof.
(従来の技術)
工業用ロボット及びその他の自動制御装置のアクチュエ
ータ等として使用される小型直流モータは、歩容量で効
率の高い高出力のものが要求される。(Prior Art) Small DC motors used as actuators for industrial robots and other automatic control devices are required to have high efficiency and high output in terms of walking capacity.
また、このような目的に使用されるモータは、マイクロ
コンピータによって直接的に制御されたり、もしくは、
マイクロコンピータを利用した′市子制御装置で制御さ
れるため、マイクロコンピータ及びその周辺器機を誤動
作させるような、放射性の、i″6周波誰音の発生を極
力低;成しなければならない。Additionally, motors used for such purposes may be directly controlled by microcomputers or
Since it is controlled by a control device using a microcomputer, it is necessary to minimize the generation of radioactive i''6-frequency noise that could cause the microcomputer and its peripheral equipment to malfunction.
小型直流モータは、ステータの永久磁界の極数を増し、
かつ、ロータのスロット数を増すとともに、そのスロッ
ト数に応じて、コイル数を増ことにより、出力の増加が
計れることは周知であり、そのため、従来から、型巻結
線、または波巻結線等の多極用の巻線方法がある。Small DC motors increase the number of poles of the stator's permanent magnetic field,
Moreover, it is well known that the output can be increased by increasing the number of slots in the rotor and increasing the number of coils according to the number of slots. There is a winding method for multiple poles.
型巻結線は、ステータの磁極の配置に合わせて刷子の数
や位置並びに巻線が施されるので、比較的刷子の整合が
容易である。In the type-wound connection, the number and position of the brushes and the windings are arranged in accordance with the arrangement of the magnetic poles of the stator, so it is relatively easy to align the brushes.
一方、4極以上の波巻結線は、型巻結線より同し出力、
同し特性を得るのに、少ない巻数で足りるため、出力増
大に対して有利である。On the other hand, a wave winding connection with 4 or more poles has the same output as a type winding connection,
Since a smaller number of turns is sufficient to obtain the same characteristics, it is advantageous for increasing output.
即ち、モータ設計の基本式を、次の如くとする。That is, the basic formula for motor design is as follows.
1゛ φg= (60E/N1)X (a/P)X 1
08 (阿axwel14ern)゛r;有効有効総数
体数線の2倍) Ternφg:磁石1極当りの総
磁束 MaxwellE:印加電圧
VoltsNl:イニシャル回転数
r、ρ1ma:並列回路数
P:磁石の磁極数
ただし、イニシャル回転数(N1)は、無負荷ロスを0
と仮定したときの回転数で、実在しないが、理解が容易
であるので使用する。1゛ φg= (60E/N1)X (a/P)X 1
08 (axwel14ern)゛r; twice the effective effective number field number line) Ternφg: Total magnetic flux per magnet pole MaxwellE: Applied voltage
VoltsNl: Initial rotation speed
r, ρ1ma: Number of parallel circuits P: Number of magnetic poles of magnet However, the initial rotation speed (N1) is set so that the no-load loss is 0.
This is the number of revolutions when it is assumed that this does not exist, but it is used because it is easy to understand.
今、巻線の総数と極数とによる出力を調べるために、イ
ニシャル回転数(Ni)、印加電圧(E)を一定として
、
A=(60・E/N1)XIO’ (Maxwel
14ern)としておく。Now, in order to check the output depending on the total number of windings and the number of poles, with the initial rotation speed (Ni) and applied voltage (E) constant, A=(60・E/N1)XIO' (Maxwel
14ern).
巻線の総数をTaとすると、T=2Taとなり。If the total number of windings is Ta, then T=2Ta.
基本式から Ta・φg=0.5X(a/P)XA となる。From the basic formula Ta・φg=0.5X(a/P)XA becomes.
周知の如く、波巻結線は、巻始めのコイルの接続をする
と、整流子片に鉄心スロットを一巡して最後のコイル巻
終りが閉回路なるから、刷子2個を使用したときは、閉
回路数a −2となる。As is well known, in the wave winding connection, when the coil at the beginning of winding is connected, it goes around the core slot in the commutator piece and the end of the last coil winding becomes a closed circuit, so when two brushes are used, a closed circuit is formed. The number a -2.
P=n極の場合 型巻線数 Tar 波巻線数 Taす Ta・φg=0.5X(a/P)XA においで。When P=n pole Type winding number Tar Wave winding number Ta Ta・φg=0.5X(a/P)XA Smell it.
(1) 型巻結線 a=n a/n=1、’、T
ar・φg=0.5XA
(II) 波巻結線 a/n = 2/n、’、T
aw・φH=0.5X(2/n)XA具体的に例示する
と、
(i) 2極重巻結線 a=2 n=2、’、Ta
r・φg=o、5XA
(ji) 4極重巻結線 a=4 n=4、’、
Tar・φ[=0.5XA
(iii) 4極減巻結線 a = 2 n =
4、’、 T a v ・φ、=0.25XAいi)
の4極重巻結線と(iii)の4極減巻結線を比較する
と、
Tar1φ1z=2TaPφt
となり、
磁石1極当りの総磁束φgを一定とすると、Tar=
2 Taw
となる。(1) Type winding connection a=n a/n=1,',T
ar・φg=0.5XA (II) Wave winding connection a/n = 2/n,', T
aw・φH=0.5X(2/n)XA To give a concrete example, (i) Double-pole double winding connection a=2 n=2,', Ta
r・φg=o, 5XA (ji) 4-pole heavy winding connection a=4 n=4,',
Tar・φ[=0.5XA (iii) 4-pole reduced winding connection a = 2 n =
4,', T a v ・φ, = 0.25XA i)
Comparing the 4-pole heavy winding connection in (iii) and the 4-pole reduced winding connection in (iii), Tar1φ1z=2TaPφt, and if the total magnetic flux φg per magnet pole is constant, Tar=
2 Taw.
以上の通り、4極減巻結線の場合は、同じ4極重巻のロ
ータを使用したとき、型巻結線の172の巻数で同じ出
力が得られることが分かる。As described above, in the case of the 4-pole reduced winding connection, it can be seen that when the same 4-pole heavy winding rotor is used, the same output can be obtained with 172 turns of the pattern winding connection.
(解決しようとする問題点)
しかし、多極とした場合、波巻結線は原則として、奇数
スロットに結線されるが、次のような欠点がある。(Problem to be Solved) However, in the case of multipole, the wave winding connection is, in principle, connected to odd numbered slots, but it has the following drawbacks.
■多極にすると、偶数スロットの並巻結線と同様に、刷
子により同時にショートされるコイル数が多くなり、ト
ルク発生に実質的に関与するコイル数が少なくなる。(2) When using multiple poles, the number of coils that are short-circuited simultaneously by the brush increases, similar to the parallel winding connection of even slots, and the number of coils that are substantially involved in torque generation decreases.
■複数個同時にショー1〜されるコイルいずれか1つは
、中性点に対して異なった角度を有し、一方のコイルを
中性点に合わせると、他方が中性点より大きくずれて、
火花の発生が激しくなり、放射性の高周波雑音を発生す
る。■Multiple coils that are shown at the same time have different angles with respect to the neutral point, and when one coil is aligned with the neutral point, the other coil deviates greatly from the neutral point,
The generation of sparks increases and generates radioactive high frequency noise.
上述の■は、サーボ系に使用するとき、立上りに対して
特に問題となる点であり、■は、電気雑音の発生を促し
、刷子の寿命を縮少すると云う使用上の基本的問題に関
連し、いずれも好ましくな1、N 。The above point (■) is a particular problem with respect to start-up when used in a servo system, and (■) is related to the basic problem of use, which is that it promotes the generation of electrical noise and shortens the life of the brush. However, 1 and N are both preferable.
上記■の場合の従来例を第4図、第5図に示し、第5図
は、■の場合も含む。Conventional examples for the above case (2) are shown in FIGS. 4 and 5, and FIG. 5 also includes the case (2).
第4図は、2極8スロット重巻結線の例であり、刷子(
A)の電極(+)(−)が図(a)に示す位置にあると
き、図(b)に示す如く、コイル「8」とコイル「4」
の2個のコイルをショートして、6個のコイルがトルク
発生に関与している。Figure 4 is an example of a 2-pole 8-slot double-wound connection, with a brush (
When the electrodes (+) and (-) of A) are in the positions shown in figure (a), coil "8" and coil "4" are connected as shown in figure (b).
By shorting the two coils, six coils are involved in torque generation.
なお、以下の説明及び図示においては、コイル番号をr
lJ、r2J、・・・、整流子片番号を(1)、(2)
、・・・(ただし、図面上は0を付設していない)、各
スロット間のボール番号を[11,[2]、・・・、で
表記する。In addition, in the following explanation and illustrations, the coil number is referred to as r.
lJ, r2J, ..., commutator strip numbers (1), (2)
, . . . (However, 0 is not added in the drawing), and the ball numbers between each slot are expressed as [11, [2], . . .
この第4図の場合は、各整流子片を切り替える毎に、刷
子(A)の電極(+)(−)が6コイル駆動と8コイル
駆動を繰り返えして、トルクリップルが大となるが、シ
ョートされる2個のコイル、例えばコイルr8Jr4J
が平行した対称関係にあるため、コイルの中性点を合わ
せるのが容易あり、逆起電力の発生を少なくして、高周
波雑音の発生を防止できる。In the case of this figure 4, each time each commutator piece is switched, the electrodes (+) and (-) of the brush (A) are driven repeatedly by 6 coils and 8 coils, resulting in a large torque ripple. But two coils are shorted, for example coil r8Jr4J
Since they are parallel and symmetrical, it is easy to align the neutral points of the coils, which reduces the generation of back electromotive force and prevents the generation of high frequency noise.
第5図は、4極7スロツト波巻結線の例で、刷子(A)
の電極(す(−)が図(a)に示す位置にあるとき。Figure 5 is an example of a 4-pole 7-slot wave winding connection, with the brush (A)
When the electrode (-) is in the position shown in Figure (a).
図(b)に示す如く、コイル「1」と「5」が同時にシ
ョートされ、刷子(A)が若干進んで、(−)極が整流
子片(2)上にくると、(+)極により、コイル「3」
と「7」が同時にショートされ、これが順次に整流子片
の番号順に進められる。As shown in Figure (b), coils "1" and "5" are short-circuited at the same time, the brush (A) advances a little, and when the (-) pole is on the commutator piece (2), the (+) pole Accordingly, coil "3"
and "7" are short-circuited at the same time, and these are sequentially advanced in the numerical order of the commutator segments.
この場合、刷子(A)の幅が整流子片の中心角の172
で理想的に面接触するとしたとき、常に、2コイルシヨ
ートの5コイル駆動で動作する。In this case, the width of the brush (A) is 172 mm of the central angle of the commutator piece.
When ideal surface contact is made, it always operates with a 5-coil drive of a 2-coil shot.
この2コイルが常にショート状態であるとした場合、ト
ルクリップルは少ないが、トルク発生に関与しないコイ
ルが常に2個となって効率が悪く、しかも、同時にショ
ートされる2個のコイルは平行でなく、スロット数に応
じた所定の角度をなすため、中性点を一方のコイルに合
わせると、他方のコイルは中性点から外れて、高い逆起
電圧を発生して、高周波雑音を発生する。If these two coils are always short-circuited, there will be little torque ripple, but there will always be two coils that are not involved in torque generation, resulting in poor efficiency.Moreover, the two coils that are short-circuited at the same time are not parallel. , form a predetermined angle depending on the number of slots, so when the neutral point is aligned with one coil, the other coil deviates from the neutral point, generating a high back electromotive voltage and generating high frequency noise.
また、刷子と整流子片の接触は、理想的な面接触でない
ため、実質的にはコイルがショートされない期間があり
、7コイル駆動と5コイル駆動が交互に生じて大きなト
ルクリップルを生じる。Further, since the contact between the brush and the commutator piece is not an ideal surface contact, there is a period in which the coil is not substantially shorted, and 7-coil drive and 5-coil drive occur alternately, resulting in large torque ripples.
第6図は、2極7スロツト重巻結線の例で、常にショー
トコイルが1つの6駆動となり、最悪刷子(A)の接触
面が線接触とした場合でも、6コイルと7コイルの交替
動作となって、1コイル分のトルクリップルしか生じな
い。また、1コイルシヨートであるため、中性点は容易
に規正できる。Figure 6 shows an example of a 2-pole 7-slot double-wound connection, where the short coil is always driven by one 6, and even if the contact surface of the brush (A) is in line contact in the worst case, the 6-coil and 7-coil alternate operation. Therefore, only one coil's worth of torque ripple occurs. Furthermore, since it is a one-coil shot, the neutral point can be easily regulated.
しかしこの例は、前述した多極型巻結線の(i)に該当
し、第5図に示す4極7スロツト波巻結線の1/2の出
力しか得られない。However, this example corresponds to (i) of the above-mentioned multi-pole type winding connection, and only 1/2 of the output of the 4-pole 7-slot wave winding connection shown in FIG. 5 can be obtained.
(問題点を解決するための手段)
本発明は、これの問題を解決する手段として、ステータ
に設けられた4個以上偶数個の永久磁石と、
ステータに対して回転自在に設けられたロータと。(Means for Solving the Problems) As a means for solving this problem, the present invention provides a structure in which an even number of permanent magnets of 4 or more are provided on the stator, and a rotor is provided so as to be rotatable with respect to the stator. .
ロータの鉄心に設けられた奇数個のスロットと、スロッ
ト数の2倍に絶縁分割し1回転軸に対して放射状に配列
され、かつ、回転軸心を挟んで対向するもの同士が短絡
された整流子片を有するロータと一体的に回転する整流
子と、
鉄心のスロット間に巻回され、かつ、1!流子の一つ置
きの整流子片について波巻結線されて閉回路を形成する
複数個のコイルと、
永久磁石の配置に応じた中心角をもって、整流子の整流
子片に接触して、波巻結線された複数個のた、ステータ
の永久磁石が少なくとも4個以上で。An odd number of slots provided in the iron core of the rotor are insulated and divided into twice the number of slots, arranged radially around the rotational axis, and those facing each other across the rotational axis are short-circuited. A commutator that rotates integrally with a rotor having a child piece, and a commutator wound between slots of an iron core, and 1! A plurality of coils are wave-wound connected to form a closed circuit for every other commutator piece of the current, and a permanent magnet is connected to the commutator piece of the commutator with a center angle corresponding to the arrangement of the permanent magnets to generate waves. The stator has at least 4 or more permanent magnets in addition to a plurality of wire-wound wires.
あり、かつロータの巻線を波巻結線とした小型直流モー
タの巻線方法であって、整流子の整流子片の数を、スロ
ット数もしくはコイル数の2倍とするとともに、各整流
子片の180度対向するもの同士を短絡し、かつその整
流子の一つ置きの11ε子片について、コイルを波巻結
線するようにした小型直流モータの巻線方法を堤供する
ことにある。A winding method for a small DC motor in which the rotor winding is wave-wound connected, the number of commutator pieces of the commutator is twice the number of slots or the number of coils, and each commutator piece is An object of the present invention is to provide a winding method for a small DC motor in which coils are short-circuited 180 degrees opposite each other, and the coils are wave-wound connected for every other 11ε element of the commutator.
(作 用)
本発明においては、多極奇数スロワ1へのモータにおけ
る整流子片を、スロワ1〜の数の倍に分割して、その゛
整流子片の対向するもの同士を短絡し、このようにした
B% QAt、子片一つ置きについて、コイルを波巻結
線することにより、刷子によってショー1〜されるコイ
ルを常に1コイルとして、そのショートコイルを切替時
に中性点に容易に整合し、もって、高周波L’I音を低
減するとともに、コイルの利用効率を高めて、高出力を
得ることができる。(Function) In the present invention, the commutator pieces in the motor for the multi-pole odd thrower 1 are divided into twice the number of throwers 1 to 1, and the opposing pieces of the commutator pieces are short-circuited. By connecting the coils in wave winding for every other child piece, the coil that is shown from 1 to 1 by the brush is always regarded as 1 coil, and the short coil can be easily matched to the neutral point when switching. Therefore, it is possible to reduce high frequency L'I sound, increase the efficiency of coil utilization, and obtain high output.
(実施例)
第1図乃至第3図は、本発明の1実施例を示すもので、
以下図面に基づき詳述する。(Example) Figures 1 to 3 show an example of the present invention.
The details will be explained below based on the drawings.
第1図は、本発明に係る4極7スロツト波巻結線の小型
直流モータを、モータの軸線方向から見た模式図である
。FIG. 1 is a schematic diagram of a small 4-pole, 7-slot, wave-wound connected small DC motor according to the present invention, viewed from the axial direction of the motor.
(21)は、ステータに設けられた4個の永久磁石、(
22)は、ロータにおける鉄心、(23)は、ロータに
固定された整流子、 (24)は、ステータに設けられ
た刷子である。(21) is the four permanent magnets provided in the stator, (
22) is an iron core in the rotor, (23) is a commutator fixed to the rotor, and (24) is a brush provided on the stator.
鉄心(22)には、7個のスロット(S)が設けられ、
その各スロット(S)には、スロット(S)を1つ置き
に巻回した7個のコイル(L)が、スロワ1−の数の2
倍に整流子片を分割した整流子(23)を介して波巻結
線されている。The iron core (22) is provided with seven slots (S),
Each of the slots (S) has seven coils (L) wound around every other slot (S).
A wave winding connection is provided via a commutator (23) in which the commutator pieces are divided into two.
なお、以下の説明において、=1イル番号、スロワ1〜
(S)間のボール番号、整流子片の番号は、前記従来の
説明のものに準じる。In addition, in the following explanation, = 1il number, thrower 1~
The ball numbers between (S) and commutator piece numbers are the same as those in the conventional explanation.
コイル(L)の巻方は、第2図及び第3図に示す如く1
例えば、コイル導線の一端を1番目の整流子片(1)に
接続してから、ボール[1][:2]の両方に1番目の
コイル「1」を巻回し、そのコイルrlJの終端を、始
端が接続された整流子片(1)に対して、進み方向に隣
接する2番目の整流子片(2)へ接続し、そのコイル導
線を、2番目の整流子片(2)と軸線回りに180°を
もって対向する9番目の整流子片(9)に接続し、そこ
から、ボール[5][6]の両方に5番目のコイル「5
」を巻回し、そのコイル「5」の終端を、始端が接続さ
れた整流子片(9)に対して進み方向に隣接する10番
目の整流子片(10)に接続し、さらに、そのコイル導
線を、それが接続された整流子片(10)と対向する3
番目の整流子片(3)へ接続し、以下同様にして、第2
図(a) (b)に示す反時計廻りの順序で、3番目の
コイル「3」〜88番目コイル「8」まで波巻結線し、
8番目のコイル「8」の終端が1番目の整流子片(1)
に接続されて、閉回路が形成される。The winding method of the coil (L) is 1 as shown in Figures 2 and 3.
For example, connect one end of the coil conductor to the first commutator piece (1), then wind the first coil "1" around both balls [1] [:2], and connect the terminal end of the coil rlJ. , the commutator piece (1) to which the starting end is connected is connected to the second commutator piece (2) adjacent in the advancing direction, and the coil conductor is connected to the second commutator piece (2) and the axis line. Connect to the 9th commutator piece (9) facing 180° around the circumference, and from there connect the 5th coil “5” to both balls [5] [6].
”, and the terminal end of the coil “5” is connected to the tenth commutator piece (10) adjacent in the advancing direction to the commutator piece (9) to which the starting end is connected, and 3 facing the commutator piece (10) to which the conducting wire is connected
Connect to the second commutator piece (3), and then connect to the second commutator piece (3) in the same manner.
In the counterclockwise order shown in Figures (a) and (b), connect the third coil "3" to the 88th coil "8" by wave winding,
The end of the 8th coil “8” is the 1st commutator piece (1)
is connected to form a closed circuit.
上記巻方の順序の説明及び第3図から分かる通り、奇数
番(1) 、 (2) 、 (3) 、・・・(13)
、もしくは、偶数番(2) 、 (4) 、 (6)
、・・・(14)、いずれか一方のvi流子片について
、各コイルの両端は、最も遠い反対側同士の整流子片間
に接続され、その整流子の進み側に一端が接続された他
のコイルの他端は、元のコイルの進み側の隣(ただし、
奇数、偶数のいずれかについて)に接続されて、各コイ
ルは、スロワ1−を順次一つ置きに一周し、最初の巻始
めに戻り閉路となる。As can be seen from the above explanation of the winding order and Figure 3, the odd numbers (1), (2), (3), ... (13)
, or even numbers (2), (4), (6)
,...(14), For either one of the vi current pieces, both ends of each coil are connected between the farthest opposite commutator pieces, and one end is connected to the leading side of the commutator. The other end of the other coil is next to the leading side of the original coil (but
(for either an odd number or an even number), each coil sequentially goes around the thrower 1- every other time and returns to the beginning of the first winding to become a closed circuit.
これは、通常の波巻結線である。ただし、本発明の場合
は、倍に分1イ1すされた整流子片全体についてみると
、整流子片を一つ置きに巻戻し、かつ、その一つ置きに
スキップされた整流子片は、それと対称の位置にあるも
の同士が短絡されている。This is a normal wave winding connection. However, in the case of the present invention, if we look at the entire commutator segments that have been doubled by 1 x 1, we can rewind every other commutator segment, and the commutator segments that have been skipped every other commutator segment are , those in symmetrical positions are short-circuited.
次に、以上のように波巻結線されたロータの動作を説明
する。Next, the operation of the rotor connected in wave winding as described above will be explained.
図において(+)(−)で示す電極は刷子(24)であ
る。In the figure, the electrodes indicated by (+) and (-) are brushes (24).
この刷子(24)の幅(W)は、整流子片の172の中
心角をもつように規正する。The width (W) of this brush (24) is regulated to have a central angle of 172 of the commutator piece.
即ち、スロワ1〜数をSとすると、
360°/4s=90/ s ’ (7スロツトの場合
は90°/7は約12.86°である。)
第5図に示す従来の4極7スロツト波巻結線の例におい
ては、(−)極刷子によってショートされているコイル
「1」が切れる瞬時に、コイル「1」に発生する逆起電
圧が0になるような位置に、永久磁石(21)がおかれ
ているわけであるが、このときは、同時にショートされ
ているコイル「5」には、高い逆起電圧(ピーク値の約
80%)が発生しているので。That is, if S is the number of throwers 1 to 3, then 360°/4s = 90/s' (90°/7 is approximately 12.86° in the case of 7 slots). In the slot wave winding example, a permanent magnet ( 21), but at this time, a high back electromotive voltage (approximately 80% of the peak value) is generated in coil "5" which is shorted at the same time.
コイル「1」が切れると同時にコイル「5」も切れ、激
しい火花の発生をみる。At the same time that coil "1" is cut off, coil "5" is also cut off, and you will see the generation of intense sparks.
しかし、本発明においては、コイルrlJのみショート
され、コイル「5」は、他のコイルと同様に、トルク発
生に関与している。However, in the present invention, only coil rlJ is short-circuited, and coil "5" is involved in torque generation like the other coils.
従って、(−)極刷子によるコイルの切替はコイル「1
」のみで、コイル「1」に発生する逆起電圧が0のとき
、切り替えるように磁石の位置を規正しておけば、火花
の発生を防止することができる。Therefore, the switching of the coil by the (-) pole brush is the coil "1".
If the position of the magnet is adjusted so that it is switched only when the back electromotive force generated in coil "1" is 0, it is possible to prevent the generation of sparks.
また、常時1個のコイルのみがショートされるので、2
極奇数スロツトの従来の場合の2倍のリップル、パルス
となり(7スロツトのとき14×2X2=56パルス)
、ますますリップルは平滑化され、起動トルクは整流子
と刷子の接触抵抗の影響を受けるのみで、回転角に応じ
た発生トルクのリップルの影響は全くな・くなる。Also, since only one coil is always shorted, two
The ripples and pulses are twice that of the conventional case for very odd slots (14 x 2 x 2 = 56 pulses for 7 slots).
, the ripples become smoother and smoother, and the starting torque is only affected by the contact resistance between the commutator and the brush, and the ripples in the generated torque depending on the rotation angle completely disappear.
(効 果)
以上の如く本発明によれば、トルクリップルが極めて少
なく、中性点の規正も容易で電気雑音の減少を計ること
が出来るとともに、モータの寿命を延ばすことが出来る
ので、極めて有利であり、然も同一出力に対して、型巻
の2/n(nは極数)の巻線で済むため、同一ディメン
ションで出力の大きなモータの作成が可能となる。(Effects) As described above, according to the present invention, torque ripple is extremely small, the neutral point can be easily regulated, electrical noise can be reduced, and the life of the motor can be extended, which is extremely advantageous. Moreover, for the same output, only 2/n (n is the number of poles) of the winding of the pattern winding is required, so it is possible to create a motor with the same dimensions and a large output.
また、30W〜50W程度のもので、同一ディメンショ
ンのものについて、第6図に示す2極重巻方式と本発明
による4wA波巻14’M流子片方式とを比較すると1
本発明のものは、約70%の出力増をみることができる
。In addition, when comparing the two-pole double winding system shown in Fig. 6 and the 4wA wave winding 14'M flow element single winding system according to the present invention for a power of about 30W to 50W and of the same dimensions, it is found that:
With the present invention, an increase in output of about 70% can be seen.
第1図は1本発明に係る小型直流モータを軸線方向から
見た模式図。
第2図は、第1図のモータのコイルと整流子片の結線状
態を示す結線図で、(a)は、刷子が第1図の位置にあ
るとき、(b)は、それより整流子片1ピッチ進んだと
きのもの、
第3図は、第1図のモータのコイルの展開図、第4図乃
至第6図は、従来の巻線方法によるもので、
第4図は、2極8スロット重巻結線のモータで、(a)
は、第1図同様の軸線方向から見た模式図。
(b)は、第2図同様のコイルと整流子片の結線図、第
5図は、2極7スロツト波巻結線のモータで。
(a)は第1図同様の軸線方向から見た模式図、(b)
は、第2図同様のコイルと整流子片の結線図、第6図は
、2極7スロツト重巻結線のモータで、(a)は、第1
図同様の軸線方向から見た模式図、(b)は、第2図同
様のコイルと整流子片の結線図である。
(21)永久磁石 (22)鉄心(23)
整流子 (24)刷子(S)スロット
(L)コイル第4図
IJ
(b)
第5図
(b)FIG. 1 is a schematic diagram of a small DC motor according to the present invention viewed from the axial direction. Fig. 2 is a wiring diagram showing the connection state between the coil and commutator piece of the motor in Fig. 1; (a) shows when the brush is in the position shown in Fig. 1; Figure 3 is an exploded view of the coil of the motor in Figure 1, Figures 4 to 6 are windings using the conventional winding method, and Figure 4 is a two-pole coil. (a) With a motor with 8 slots and double winding connection,
1 is a schematic view seen from the axial direction similar to FIG. 1. (b) is a wiring diagram of the coil and commutator piece similar to Figure 2, and Figure 5 is for a motor with 2 poles and 7 slot wave winding connections. (a) is a schematic diagram seen from the axial direction similar to Figure 1, (b)
is a wiring diagram of the coil and commutator piece similar to that shown in Figure 2. Figure 6 shows a motor with two poles and seven slots with multiple windings.
A schematic view as seen from the axial direction similar to the figure, and (b) is a connection diagram of the coil and commutator piece similar to FIG. 2. (21) Permanent magnet (22) Iron core (23)
Commutator (24) Brush (S) slot
(L) Coil Fig. 4 IJ (b) Fig. 5 (b)
Claims (2)
と、 ステータに対して回転自在に設けられたロータと、ロー
タの鉄心に設けられた奇数個のスロットと、スロット数
の2倍に絶縁分割し、回転軸に対して放射状に配列され
、かつ、回転軸心を挟んで対向するもの同士が短絡され
た整流子片を有するロータと一体的に回転する整流子と
、 鉄心のスロット間に巻回され、かつ、整流子の一つ置き
の整流子片について波巻結線されて閉回路を形成する複
数個のコイルと、 永久磁石の配置に応じた中心角をもって、整流子の整流
子片に接触して、波巻結線された複数個のコイルの閉回
路の途中に給電回路を形成する1対の刷子とを備えてな
る小型直流モータ。(1) An even number of permanent magnets of four or more provided in the stator, a rotor provided rotatably relative to the stator, an odd number of slots provided in the iron core of the rotor, and twice the number of slots. A commutator that rotates integrally with the rotor and has commutator pieces that are divided into insulation parts, are arranged radially around the rotation axis, and are short-circuited with opposing pieces across the rotation axis, and between the slots of the iron core. A plurality of coils are wound around each other and are connected in wave winding to form a closed circuit for every other commutator piece of the commutator, and a commutator of the commutator with a center angle corresponding to the arrangement of the permanent magnets. A small direct current motor comprising a pair of brushes that contact the brush and form a power supply circuit in the middle of a closed circuit of a plurality of coils connected in a wave winding manner.
り、かつロータの巻線を波巻結線とした小型直流モータ
の巻線方法であって、整流子の整流子片の数を、スロッ
ト数もしくはコイル数の2倍とするとともに、各整流子
片の180度対向するもの同士を短絡し、かつその整流
子の一つ置きの整流子片について、コイルを波巻結線す
ることを特徴とする小型直流モータの巻線方法。(2) A method of winding a small DC motor in which the stator has at least four permanent magnets and the rotor winding is wave-wound connected, the number of commutator pieces of the commutator being the number of slots. Alternatively, the number of coils is twice as many as the number of coils, the commutator pieces that are 180 degrees opposed to each other are short-circuited, and the coils of every other commutator piece of the commutator are connected by wave winding. Winding method for small DC motor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22044985A JPS62181651A (en) | 1985-10-04 | 1985-10-04 | Small-sized dc motor and its winding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22044985A JPS62181651A (en) | 1985-10-04 | 1985-10-04 | Small-sized dc motor and its winding method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS62181651A true JPS62181651A (en) | 1987-08-10 |
Family
ID=16751291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22044985A Pending JPS62181651A (en) | 1985-10-04 | 1985-10-04 | Small-sized dc motor and its winding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS62181651A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005036724A1 (en) * | 2003-10-08 | 2005-04-21 | Mitsuba Corporation | Armature in rotating electric machine and manufacturing method thereof |
JP2005341654A (en) * | 2004-05-24 | 2005-12-08 | Asmo Co Ltd | Armature and manufacturing method of the same |
JP2009055733A (en) * | 2007-08-28 | 2009-03-12 | Asmo Co Ltd | Rotating armature, rotatary electric machine, and method of manufacturing rotating armature |
EP2430734A1 (en) * | 2009-05-15 | 2012-03-21 | Robert Bosch GmbH | Electrical machine having a brush arrangement |
JP2012161210A (en) * | 2011-02-02 | 2012-08-23 | Mitsubishi Electric Corp | Rotating electric machine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55125069A (en) * | 1979-03-17 | 1980-09-26 | Secoh Giken Inc | Dc motor equipped with wave winding armature superior in rectifying characteristic |
-
1985
- 1985-10-04 JP JP22044985A patent/JPS62181651A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55125069A (en) * | 1979-03-17 | 1980-09-26 | Secoh Giken Inc | Dc motor equipped with wave winding armature superior in rectifying characteristic |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005036724A1 (en) * | 2003-10-08 | 2005-04-21 | Mitsuba Corporation | Armature in rotating electric machine and manufacturing method thereof |
JPWO2005036724A1 (en) * | 2003-10-08 | 2006-12-28 | 株式会社ミツバ | Armature in rotating electrical machine and method for manufacturing the same |
US7619344B2 (en) | 2003-10-08 | 2009-11-17 | Mitsuba Corporation | Armature of rotary electric machine and manufacturing method thereof |
JP4726627B2 (en) * | 2003-10-08 | 2011-07-20 | 株式会社ミツバ | Armature in rotating electrical machine and method for manufacturing the same |
JP2005341654A (en) * | 2004-05-24 | 2005-12-08 | Asmo Co Ltd | Armature and manufacturing method of the same |
JP2009055733A (en) * | 2007-08-28 | 2009-03-12 | Asmo Co Ltd | Rotating armature, rotatary electric machine, and method of manufacturing rotating armature |
EP2430734A1 (en) * | 2009-05-15 | 2012-03-21 | Robert Bosch GmbH | Electrical machine having a brush arrangement |
US8686612B2 (en) | 2009-05-15 | 2014-04-01 | Robert Bosch Gmbh | Brush arrangement for electrical machine |
JP2012161210A (en) * | 2011-02-02 | 2012-08-23 | Mitsubishi Electric Corp | Rotating electric machine |
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