JPS6142506B2 - - Google Patents
Info
- Publication number
- JPS6142506B2 JPS6142506B2 JP55121198A JP12119880A JPS6142506B2 JP S6142506 B2 JPS6142506 B2 JP S6142506B2 JP 55121198 A JP55121198 A JP 55121198A JP 12119880 A JP12119880 A JP 12119880A JP S6142506 B2 JPS6142506 B2 JP S6142506B2
- Authority
- JP
- Japan
- Prior art keywords
- commutator
- brushes
- switching transistor
- conductor
- brush
- 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
Links
- 239000004020 conductor Substances 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 9
- 239000000615 nonconductor Substances 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Dc Machiner (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Direct Current Motors (AREA)
Description
【発明の詳細な説明】
本発明は直流モーターに関するものであつて、
特に磁石式小型直流モーターの整流子とブラシ間
に発生する火花放電を制御するように構成された
モーターに関するものである。[Detailed Description of the Invention] The present invention relates to a DC motor, and includes:
In particular, the present invention relates to a motor configured to control spark discharge generated between a commutator and brushes of a small magnetic DC motor.
従来の直流モーターにおける大きな欠点の１つ
はモーターが起動するに従つて電機子に捲設され
たコイルの端部が整流子に連結され回転しながら
固定ブラシに接しこのブラシを介して電流が流れ
るようになつているので整流子の極と極間の不導
体と導体が交互にブラシに接する際電機子の逆起
電力とリアクタンスにより火花放電が生ずること
である。この火花によりブラシの磨耗が大きくな
り、これによるモーターの故障頻度が高かつた。
又、界磁巻線が無く永久磁石で界磁極を形成する
小型モーターに於いては界磁極の磁場が一定する
から回転速度を調節するには電機子巻線の電圧を
変えることになるがこの場合には多くの電流が流
れることになつてブラシと整流子間の火花放電が
多くなる欠点があつた。 One of the major drawbacks of conventional DC motors is that as the motor starts, the end of the coil wound around the armature is connected to a commutator and rotates while contacting a fixed brush, through which current flows. Therefore, when the nonconductor and conductor between the poles of the commutator alternately contact the brush, spark discharge occurs due to the back electromotive force and reactance of the armature. This spark caused increased wear on the brushes, which led to a high frequency of motor failures.
In addition, in small motors that do not have a field winding and the field pole is formed by a permanent magnet, the magnetic field of the field pole is constant, so to adjust the rotation speed, the voltage of the armature winding must be changed. In some cases, a large amount of current flows, resulting in increased spark discharge between the brushes and the commutator.
本発明は従前の小型直流モーターの体積を最小
限に縮めて、整流子とブラシ間の火花放電現象を
除去することができ且つ自由自在に回転速度を調
節することができる高効率のモーターを提供する
ことを目的とする。 The present invention provides a highly efficient motor that can reduce the volume of a conventional small DC motor to a minimum, eliminate the spark discharge phenomenon between the commutator and brushes, and freely adjust the rotation speed. The purpose is to
上記する本発明の目的を達成するため本発明で
は永久磁石を界磁極とし、この磁場間で回転する
電機子にブラシと整流子を通じて電源を供給する
ようにしている公知の小型直流モーターにおい
て、回転軸に夫々導体と不導体部分を交互に連結
して成る２個の整流子を設け、その一方の整流子
の導体には夫々回転電機子の巻線の端子を接続
し、この整流子対接したブラシ間にはスイツチン
グトランジスタのコレクター、エミツター間を介
して電源部を接続し、他方の整流子の導体は夫々
導線によつて短絡し、この整流子に対接したブラ
シ間には前記スイツチングトランジスタのベー
ス、エミツター間及び可変抵抗を介して前記電源
部を接続し前記ブラシが対応する整流子の導体に
接続されるときのみ前記スイツチングトランジス
タを導通し電機子巻線に電源部の電流を流すよう
構成したことを特徴とする。 In order to achieve the above-mentioned object of the present invention, the present invention uses a permanent magnet as a field pole, and a known small DC motor in which power is supplied to an armature rotating between the magnetic fields through a brush and a commutator. Two commutators each having a conductor and a non-conductor connected alternately are provided on the shaft, and the terminals of the windings of the rotating armature are connected to the conductors of one of the commutators. A power source is connected between the brushes of the switching transistor through the collector and emitter of the switching transistor, the conductors of the other commutator are short-circuited by respective conductive wires, and the switch is connected between the brushes facing this commutator. The power supply section is connected between the base and emitter of the switching transistor and through a variable resistor, and the switching transistor is made conductive only when the brush is connected to the corresponding conductor of the commutator, so that the current of the power supply section is transferred to the armature winding. It is characterized by being configured to flow.
以下図面によつて本発明の実施例を説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明直流電動機の一実施例であつて
回転軸１に電機子の巻線２が捲設され且つ整流子
３が設けられてこれにブラシ４，４′が対接され
ていることは公知のものと同じである。然しなが
ら本発明においては回転軸１に第２の整流子５が
設けられこれにブラシ５′，５″が対接される。こ
のようなブラシ４，４′，５′，５″はケース６に
より永久磁石７，７′と共に公知の場合と同じく
支持されるようになつている。 FIG. 1 shows an embodiment of a DC motor according to the present invention, in which an armature winding 2 is wound around a rotating shaft 1, a commutator 3 is provided, and brushes 4, 4' are in contact with this. This is the same as the known one. However, in the present invention, the second commutator 5 is provided on the rotating shaft 1, and the brushes 5', 5'' are in contact with it.The brushes 4, 4', 5', 5'' are Together with the permanent magnets 7, 7', they are supported in the known manner.
一方上記整流子３，５と連結されるブラシ４，
４′，５′，５″には第２図の如き電気的結線がな
されている。即ち第２図において第１図と同じ部
分は同一符号を附与しているが整流子３のブラシ
４はスイツチSWを介して電源部Ｂのプラス端子
に連結し、ブラシ４′はスイツチングトランジス
タＱのコレクターに接続し、同エミツターは電源
部Ｂのマイナス端子に連結し且つこの電源部Ｂの
マイナス端子は抵抗R1を介してスイツチングト
ランジスタＱのベース及びブラシ５″に連結し、
ブラシ５′は抵抗R2と可変抵抗VRを介して電源
部Ｂのプラス端子に連結する。 On the other hand, a brush 4 connected to the commutators 3 and 5,
4', 5', and 5'' are electrically connected as shown in Fig. 2. In Fig. 2, the same parts as in Fig. 1 are given the same reference numerals, but the brush 4 of the commutator 3 is is connected to the positive terminal of the power supply section B via the switch SW, the brush 4' is connected to the collector of the switching transistor Q, and its emitter is connected to the negative terminal of the power supply section B. is connected to the base of the switching transistor Q and the brush 5'' through a resistor R1 ,
The brush 5' is connected to the positive terminal of the power supply section B via a resistor R2 and a variable resistor VR.
又第２図の整流子３，５の黒い部分は不導体で
あり白い部分は導体であつて整流子５の導体は互
に連結せしめる。従つてスイツチSWを接にすれ
ば電源部Ｂのプラス端子は可変抵抗VRと抵抗R2
を通じブラシ５′に導通し、ブラシ５′は導体を通
じてブラシ５″に通電するからスイツチングトラ
ンジスタＱをトリガーさせコレクター、エミツタ
ー間が導通され整流子３のブラシ４に電源を供給
することになる。スイツチングトランジスタＱが
導通されれば電源部Ｂの電圧はブラシ４とブラシ
４′間に連結された回転電機子の巻線２を励磁す
るが整流子３，５が同時に軸１と共に回転するか
らブラシ４，４′とブラシ５′，５″は導体とは軸
１の回転に従つて接したり離れたりするからブラ
シ４，４′，５′，５″が整流子３，５の導体と離
れる瞬間ベース信号も切断される。従つてスイツ
チングトランジスタＱのコレクター、エミツター
間には電源電流が流れなくなつて整流子とブラシ
間の火花放電が抑制される。 Further, the black parts of the commutators 3 and 5 in FIG. 2 are nonconductors, and the white parts are conductors, and the conductors of the commutator 5 are connected to each other. Therefore, if switch SW is connected, the positive terminal of power supply section B will be connected to variable resistor VR and resistor R 2
Since the brush 5' conducts electricity through the conductor to the brush 5'', the switching transistor Q is triggered and conduction is established between the collector and the emitter, supplying power to the brush 4 of the commutator 3. When the switching transistor Q is made conductive, the voltage of the power source B excites the winding 2 of the rotating armature connected between the brushes 4 and 4', but the commutators 3 and 5 simultaneously rotate together with the shaft 1. Since brushes 4, 4' and brushes 5', 5'' touch and separate from the conductor as the shaft 1 rotates, brushes 4, 4', 5', 5'' separate from the conductor of commutator 3, 5. The instantaneous base signal is also cut off.Therefore, no power current flows between the collector and emitter of the switching transistor Q, and spark discharge between the commutator and the brush is suppressed.
又可変抵抗VRの抵抗を大にするか又は小にす
ることによつてスイツチングトランジスタＱのベ
ースに加えられる信号も大又は小になるのでスイ
ツチングトランジスタＱのコレクター、エミツタ
ーに流れる電流も共に大になつたり小になりモー
ターの回転速度を加減することが可能であつて従
来の如く別途の装置即ち変圧器による回転速度の
調節が必要なく簡単であつて小型化することがで
きると共に火花放電を防止することができる。 Furthermore, by increasing or decreasing the resistance of the variable resistor VR, the signal applied to the base of the switching transistor Q also increases or decreases, so the current flowing through the collector and emitter of the switching transistor Q also increases. It is possible to adjust the rotational speed of the motor by increasing or decreasing the rotational speed of the motor, and there is no need to adjust the rotational speed using a separate device, that is, a transformer, as in the past, making it simple and compact. It can be prevented.
第１図は本発明直流電動機の一実施例を示す説
明用断面図、第２図はその電気的結線図である。
１……回転軸、２……巻線、３，５……整流
子、４，４′，５′，５″……ブラシ、６……ケー
ス、７，７′……永久磁石、Ｂ……電源部、Ｑ…
…スイツチングトランジスタ、R1，R2……抵
抗、SW……スイツチ、VR……可変抵抗。
FIG. 1 is an explanatory sectional view showing one embodiment of the DC motor of the present invention, and FIG. 2 is an electrical connection diagram thereof. 1... Rotating shaft, 2... Winding, 3, 5... Commutator, 4, 4', 5', 5''... Brush, 6... Case, 7, 7'... Permanent magnet, B... ...Power supply section, Q...
...Switching transistor, R 1 , R 2 ... Resistor, SW ... Switch, VR ... Variable resistor.
Claims (1)
して成る２個の整流子３，５を設け、その一方の
整流子３の導体には夫々回転電機子の巻線の端子
を接続し、この整流子３に対接したブラシ４，４
間にはスイツチングトランジスタＱのコレクタ
ー、エミツター間を介して電源部を接続し、他方
の整流子５の導体は夫々導線によつて短絡し、こ
の整流子３に対接したブラシ５′，５″間には前記
スイツチングトランジスタのベース、エミツター
間及び可変抵抗を介して前記電源部を接続し前記
ブラシ４，４′が対応する整流子３の導体に接続
されるときのみ前記スイツチングトランジスタを
導通し電機子巻線に電源部の電流を流すよう構成
したことを特徴とする直流電動機。1. Two commutators 3 and 5 each having a conductor and a non-conductor part connected alternately are provided on the rotating shaft, and the terminals of the windings of the rotating armature are connected to the conductors of one of the commutators 3, respectively. , brushes 4, 4 facing this commutator 3
A power supply section is connected between the collector and emitter of the switching transistor Q, and the conductors of the other commutator 5 are short-circuited by conductive wires, and the brushes 5' and 5 in contact with the commutator 3 are connected in between. The power source section is connected between the base and emitter of the switching transistor through a variable resistor, and the switching transistor is connected only when the brushes 4 and 4' are connected to the corresponding conductor of the commutator 3. A direct current motor characterized by being configured so that current from a power supply section flows through a conductive armature winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55121198A JPS5746666A (en) | 1980-09-03 | 1980-09-03 | Dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55121198A JPS5746666A (en) | 1980-09-03 | 1980-09-03 | Dc motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5746666A JPS5746666A (en) | 1982-03-17 |
| JPS6142506B2 true JPS6142506B2 (en) | 1986-09-22 |
Family
ID=14805285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55121198A Granted JPS5746666A (en) | 1980-09-03 | 1980-09-03 | Dc motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5746666A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932351A (en) * | 1982-08-12 | 1984-02-21 | Yutaka Mizuno | Sparkless single-phase ac series commutator motor |
| JPS5963995A (en) * | 1982-09-30 | 1984-04-11 | Matsushita Electric Works Ltd | Driving circuit for dc motor |
-
1980
- 1980-09-03 JP JP55121198A patent/JPS5746666A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5746666A (en) | 1982-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4949023A (en) | Direct current machine with switchable stator windings | |
| KR100900165B1 (en) | Motor | |
| US3593050A (en) | Trolling motor | |
| EP0218484A3 (en) | Electric motors | |
| US3969658A (en) | Motor and control system having cyclic reversal and unidirectional capabilities | |
| US3667019A (en) | Control circuit for adjusting and regulating the speed of a brushless direct current motor responsive to voltages induced in the armature windings | |
| US3564306A (en) | Drive device for battery energized sound recording apparatus | |
| GB765830A (en) | Improvements in and relating to direct current motors | |
| US5168201A (en) | Shifting-field type permanent-magnet motor | |
| JPS6142506B2 (en) | ||
| GB1206154A (en) | Permanent magnet direct current electric motor | |
| US3662240A (en) | Small-size direct current motor | |
| KR20180031647A (en) | A generator using of multibrush and slip ring | |
| KR810000740Y1 (en) | Small d.c.motor | |
| US3531669A (en) | Dc motor with speed control arrangement | |
| US3394296A (en) | Synchronous motor stator circuit employing commutator and rectifier during starting | |
| US3436573A (en) | Control apparatus | |
| JPS6325891Y2 (en) | ||
| US3437898A (en) | Dynamo-electric machine including commutators fed from electronic discharge devices | |
| JPH04168950A (en) | Vibration motor having no output shaft | |
| DE3787363D1 (en) | Two speed motor. | |
| JPS62181651A (en) | Small-sized dc motor and its winding method | |
| US287343A (en) | Regulator for dynamo-electric machines | |
| JPH022061Y2 (en) | ||
| US444416A (en) | Electric motor |