JPS6338719Y2 - - Google Patents
Info
- Publication number
- JPS6338719Y2 JPS6338719Y2 JP1981040416U JP4041681U JPS6338719Y2 JP S6338719 Y2 JPS6338719 Y2 JP S6338719Y2 JP 1981040416 U JP1981040416 U JP 1981040416U JP 4041681 U JP4041681 U JP 4041681U JP S6338719 Y2 JPS6338719 Y2 JP S6338719Y2
- Authority
- JP
- Japan
- Prior art keywords
- speed
- braking
- series
- armature
- commutator motor
- 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
- 238000010586 diagram Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Stopping Of Electric Motors (AREA)
Description
【考案の詳細な説明】
本考案は主に、２箇のフイールドコイルを直・
並列に切換えて電機子回転速度を低速・高速の２
段階に制御する直巻整流子電動機用発電制動装置
に関するものである。[Detailed explanation of the invention] This invention mainly consists of connecting two field coils directly.
By switching in parallel, the armature rotation speed can be set to low or high speed.
This invention relates to a dynamic braking device for a series commutator motor that is controlled in stages.
従来、２箇のフイールドコイルを直・並列に切
換えて電機子回転速度を低・高速の２段階に制御
する直巻整流子電動機の回路としては、例えば第
１図の回路があるが、この場合、２段変速スイツ
チSW１を第１図実線の高速側に切換えて電源ス
イツチSW２をオン（第１図の点線状態）にする
と、２箇のフイールドコイルＦ１，Ｆ２は並列に
接続された状態で電機子Ａを介して電源ACに接
続され、直巻整流子電動機Ｍ１は高速で回転する
とともに、この高速運転状態で電源スイツチSW
２をオフ（第１図の実線状態）にすると、電機子
Ａには、通電方向を運転時の逆にした並列接続の
フイールドコイルＦ１，Ｆ２に制動用抵抗Rbを
直列に接続した比較的低い抵抗値の制動負荷が接
続される。 Conventionally, an example of a series-wound commutator motor circuit that controls the armature rotation speed in two stages, low and high speed, by switching two field coils in series and parallel, is the circuit shown in Figure 1. , when the two-speed shift switch SW1 is switched to the high speed side shown by the solid line in Figure 1 and the power switch SW2 is turned on (state shown by the dotted line in Figure 1), the two field coils F1 and F2 are connected in parallel and the electric motor is switched on. The series commutator motor M1 is connected to the power supply AC through the child A, and rotates at high speed, and in this high-speed operation state, the power switch SW
2 is turned off (solid line state in Figure 1), armature A has a relatively low braking resistor Rb connected in series to field coils F1 and F2, which are connected in parallel with the energization direction reversed to that of operation. A braking load of resistive value is connected.
即ち、フイールドコイルＦ１の抵抗分をrf1
フイールドコイルＦ２の抵抗分をrf2
電機子Ａの抵抗分をra
制動用抵抗Rbの抵抗値をrb
とし、かつ各抵抗値の関係を実測値から
ra≒rf1／２≒rf2／２≒rb／３
とすると、高速時の制動負荷抵抗RHは
RH＝１／１／rf1＋１／rf2＋ra＋rb
＝rf1×rf2／rf1＋rf2＋ra＋rb
≒2ra×2ra／2ra＋2ra＋ra＋3ra
＝ra＋ra＋3ra
＝5ra
次に、前記２段変速スイツチSW１を第１図点
線の低速側に切換えて電源スイツチSW２をオン
にすると、２箇のフイールドコイルＦ１，Ｆ２は
直列に接続された状態で電機子Ａを介して電源
ACに接続され、直巻整流子電動機Ｍ１は低速で
回転するとともに、この低速運転状態で電源スイ
ツチSW２をオフにすると、電機子Ａには、通電
方向を運転時の逆にした直列接続のフイールドコ
イルＦ１，Ｆ２に制動用抵抗Rbを直列に接続し
た比較的高い抵抗値の制動負荷が接続される。 That is, the resistance of field coil F1 is rf1, the resistance of field coil F2 is rf2, the resistance of armature A is ra, the resistance value of braking resistor Rb is rb, and the relationship between each resistance value is ra≈rf1 from the actual measurement value. /2≒rf2/2≒rb/3, the braking load resistance RH at high speed is RH=1/1/rf 1 +1/rf 2 +ra+rb = rf1×rf2/rf1+rf2+ra+rb ≒2ra×2ra/2ra+2ra+ra+3ra =ra+ra+3ra =5ra Next, when the two-speed shift switch SW1 is switched to the low speed side indicated by the dotted line in Figure 1 and the power switch SW2 is turned on, the two field coils F1 and F2 are connected in series and are connected via the armature A. power supply
The series-wound commutator motor M1 is connected to AC and rotates at a low speed. When the power switch SW2 is turned off in this low-speed operation state, a series-connected field is connected to the armature A with the energization direction reversed to that of operation. A braking load having a relatively high resistance value and having a braking resistor Rb connected in series is connected to the coils F1 and F2.
即ち、前記同様、各抵抗値をrf1，rf2，ra，rb
とし、各抵抗値の関係も
ra≒rf1／２≒rf2／２≒rb／３
とすると、低速時の制動負荷抵抗RLは
RL＝rf1＋rf2＋ra＋rb
≒2ra＋2ra＋ra＋3ra
＝8ra
従つて、高速運転からの制動時には制動負荷抵
抗値が低く、制動力が大きいのに対して、低速運
転からの制動時には制動負荷抵抗値が高く、制動
力は高速運転からの制動時より大巾に低下する。 That is, as above, each resistance value is rf1, rf2, ra, rb
Assuming that the relationship between each resistance value is ra≒rf1/2≒rf2/2≒rb/3, the braking load resistance RL at low speed is RL=rf1+rf2+ra+rb ≒2ra+2ra+ra+3ra =8ra Therefore, the braking load when braking from high-speed operation is While the resistance value is low and the braking force is large, the braking load resistance value is high when braking from low-speed operation, and the braking force is significantly lower than when braking from high-speed operation.
その結果、制動負荷抵抗値を低速運転からの制
動特性に合せて設定した状態で、この直巻整流子
電動機Ｍ１駆動の電動工具を高速運転途上で停止
させた場合、制動力が大き過ぎて電動工具に大き
な反動が発生して危険なばかりか、制動電流が多
く流れてカーボンブラシが損傷すると云う欠点が
あり、だからと云つて、制動負荷抵抗値を高速運
転からの制動特性に合せて設定した状態で、この
直巻整流子電動機Ｍ１駆動の電動工具を低速運転
途上で停止させた場合、制動力が極めて悪くなり
制動効果が殆どなくなると云う欠点があつた。 As a result, if a power tool driven by series commutator motor M1 is stopped in the middle of high-speed operation with the braking load resistance value set to match the braking characteristics from low-speed operation, the braking force will be too large and the Not only is it dangerous because a large reaction occurs to the tool, but it also has the disadvantage that a large amount of braking current flows and damages the carbon brushes.For this reason, the braking load resistance value was set to match the braking characteristics from high-speed operation. In this state, if the power tool driven by the series commutator motor M1 is stopped during low-speed operation, the braking force becomes extremely poor and there is almost no braking effect.
このことは、第２図に示す直巻整流子電動機、
即ち、２段変速スイツチSW３を介してのフイー
ルドコイルＦ３，Ｆ４の直・並列切換と電源スイ
ツチSW４を介しての直巻整流子電動機Ｍ２のオ
ン・オフ制御についても、まつたく同様のことが
云えると云う欠点があつた。 This means that the series commutator motor shown in FIG.
That is, the same thing can be said about the series/parallel switching of the field coils F3 and F4 via the two-stage speed change switch SW3 and the on/off control of the series-wound commutator motor M2 via the power switch SW4. There was a drawback that it could be improved.
本考案の目的は高速運転からの発電制動時及び
低速運転からの発電制動時においても制動負荷抵
抗値を一定にする直巻整流子電動機用発電制動装
置を提供することによつて、前記従来の欠点を除
去することにある。 The purpose of the present invention is to provide a dynamic braking device for a series commutator motor that maintains a constant braking load resistance value even during dynamic braking from high-speed operation and during dynamic braking from low-speed operation. The purpose is to eliminate shortcomings.
次に、本考案の第１実施例の構成を第３図によ
つて説明する。 Next, the configuration of the first embodiment of the present invention will be explained with reference to FIG.
２段変速スイツチSW５を第３図点線の低速側
に切換えての電源スイツチSW６オン状態（第３
図点線状態）において、電機子Ａは２箇のフイー
ルドコイルＦ５，Ｆ６の直列回路を介して電源
ACに接続され、２段変速スイツチSW５を第３
図実線の高速側に切換えての電源スイツチSW６
オン状態において、電機子Ａは２箇のフイールド
コイルＦ５，Ｆ６の並列回路を介して電源ACに
接続され、かつ、電源スイツチSW６オフ状態（
第３図実線状態）において、制動用抵抗Rbは通
電方向を運転時の逆にした一方のフイールドコイ
ルＦ６を介して電機子Ａに接続されている。 Switch the two-speed shift switch SW5 to the low speed side indicated by the dotted line in Figure 3 and turn on the power switch SW6 (Figure 3).
In the state indicated by the dotted line in the figure, armature A is powered through a series circuit of two field coils F5 and F6.
Connected to AC and set the 2-speed switch SW5 to the 3rd position.
Switch the power switch SW6 to the high speed side shown by the solid line in the figure.
In the on state, the armature A is connected to the power supply AC through the parallel circuit of two field coils F5 and F6, and the power switch SW6 is in the off state (
In the solid line state in FIG. 3), the braking resistor Rb is connected to the armature A through one field coil F6 whose energization direction is reversed to that during operation.
次に、本実施例の作用について説明する。 Next, the operation of this embodiment will be explained.
このように構成された直巻整流子電動機Ｍ３に
おいて、２段変速スイツチSW５を第３図実線の
高速側に切換えて電源スイツチSW６をオンにす
ると、２箇のフイールドコイルＦ５，Ｆ６は並列
に接続された状態で電機子Ａを介して電源ACに
接続され、直巻整流子電動機Ｍ３は高速で回転す
るとともに、この高速運転状態で電源スイツチ
SW６をオフにすると、フイールドコイルＦ５が
短絡された状態で電機子Ａには、一方のフイール
ドコイルＦ６と制動用抵抗Rbを直列に接続した
制動負荷、即ち、
フイールドコイルＦ５の抵抗分をrf1
フイールドコイルＦ６の抵抗分をrf2
電機子Ａの抵抗分をra
制動用抵抗Rbの抵抗値をrb
高速時の制動負荷抵抗をRHとすると、
RH＝rf2＋ra＋rb
の制動負荷が接続され、直巻整流子電動機Ｍ３は
この制動負荷抵抗値RHに対応した制動特性で停
止する。 In the series-wound commutator motor M3 configured as described above, when the two-stage speed change switch SW5 is switched to the high speed side shown by the solid line in Figure 3 and the power switch SW6 is turned on, the two field coils F5 and F6 are connected in parallel. In this state, the series commutator motor M3 is connected to the power supply AC via armature A, and the series commutator motor M3 rotates at high speed.
When SW6 is turned off, field coil F5 is short-circuited, and armature A receives a braking load consisting of one field coil F6 and braking resistor Rb connected in series, that is, the resistance of field coil F5 is rf1 field. The resistance of coil F6 is rf2 The resistance of armature A is ra The resistance value of braking resistor Rb is rb When the braking load resistance at high speed is RH, the braking load of RH = rf2 + ra + rb is connected, and the series commutator motor M3 stops with braking characteristics corresponding to this braking load resistance value RH.
次に、２段変速スイツチSW５を第３図点線の
低速側に切換えて電源スイツチSW６をオンにす
ると、２箇のフイールドコイルＦ５，Ｆ６は直列
に接続された状態で電機子Ａを介して電源ACに
接続され、直巻整流子電動機Ｍ３は低速で回転す
るとともに、この低速運転状態で電源スイツチ
SW６をオフにすると、電機子Ａには、一方のフ
イールドコイルＦ６と制動用抵抗Rbを直列に接
続した制動負荷、即ち、前記同様、各抵抗値を
rf1，rf2，ra，rbとし、低速時の制動負荷抵抗を
RLとすると、
RL＝rf2＋ra＋rb
＝RH
の制動負荷が接続され、直巻整流子電動機Ｍ３は
高速時の制動負抵抗値RHと同等の抵抗値RLに
対応した制動特性で停止する。 Next, when the two-speed shift switch SW5 is switched to the low speed side indicated by the dotted line in Figure 3 and the power switch SW6 is turned on, the two field coils F5 and F6 are connected in series and are powered through the armature A. Connected to AC, the series commutator motor M3 rotates at low speed, and in this low speed operating state, the power switch is turned off.
When SW6 is turned off, armature A is loaded with a braking load consisting of one field coil F6 and a braking resistor Rb connected in series, that is, each resistance value is set as above.
Let rf1, rf2, ra, rb be the braking load resistance at low speed.
When RL, a braking load of RL=rf2+ra+rb=RH is connected, and the series commutator motor M3 stops with braking characteristics corresponding to the resistance value RL, which is equivalent to the braking negative resistance value RH at high speed.
その結果、この直巻整流子電動機Ｍ３の場合、
高速運転時及び低速運転時とも発電制動の制動負
荷抵抗値が常に一定のため、高速運転時或は低速
運転時のどちらか一方で適切な制動が得られるよ
うに制動負荷抵抗の値を選定すれば、他方も前記
一方の場合とほぼ同等の制動特性を得ることがで
き、又、制動負荷抵抗値が１箇のフイールドコイ
ルＦ６の抵抗分の値で適切な制動が得られる場合
において制動用抵抗Rbを省いても前記同様の作
用、効果が得られる。 As a result, for this series commutator motor M3,
Since the braking load resistance value for dynamic braking is always constant during both high-speed and low-speed operation, the value of the braking load resistance must be selected so that appropriate braking can be obtained during either high-speed or low-speed operation. For example, in the other case, it is possible to obtain almost the same braking characteristics as in the above one case, and when appropriate braking can be obtained with the braking load resistance value equal to the resistance of one field coil F6, the braking resistance Even if Rb is omitted, the same effects and effects as described above can be obtained.
次に、第４図は本考案の第２実施例であつて、
この場合は配線回路が異なる他、２段変速スイツ
チSW７による２箇のフイールドコイルＦ７，Ｆ
８の直・並列切換えによつて直巻整流子電動機Ｍ
４の速度が低速・高速の２段階に制御され、電源
スイツチSW８のオン・オフ（第４図の点線・実
線）操作によつて直巻整流子電動機Ｍ４がオン・
オフ制御されるとともに、高速運転からの停止及
び低速運転からの停止時とも、電源スイツチSW
８のオフ状態において、一方のフイールドコイル
Ｆ８と制動用抵抗Rbの直列回路が発電制動時の
制動負荷として電機子Ａに接続され、高速運転時
及び低速運転時ともほぼ同時の制動効果が得られ
る等、作用、効果においては前記第１実施例とほ
ぼ同様である。 Next, FIG. 4 shows the second embodiment of the present invention.
In this case, the wiring circuit is different, and two field coils F7 and F8 are connected by a two-speed switch SW7.
8 series/parallel switching to series-wound commutator motor M
The speed of the motor M4 is controlled in two stages, low speed and high speed, and the series-wound commutator motor M4 is turned on and off by turning on and off the power switch SW8 (dotted line and solid line in FIG. 4).
The power switch SW is turned off when the motor is stopped from high speed operation or low speed operation.
When field coil F8 is in the off state, a series circuit of one field coil F8 and braking resistor Rb is connected to armature A as a braking load during dynamic braking, and braking effects are obtained almost simultaneously both during high-speed and low-speed operation, which is essentially the same as in the first embodiment in terms of operation and effect.
次に、本考案の効果について説明する。 Next, the effects of the present invention will be explained.
本考案は、電機子と２個のフイールドコイルと
からなる直巻整流子電動機において、前記２個の
フイールドコイルの接続を直列或は並列に切換て
前記直巻整流子電動機を低速運転或は高速運転に
切換るための２段変速スイツチと、前記２段変速
スイツチの低速・高速切換状態に関係なく前記２
個のフイールドコイルの特定した一方をその極性
を反転させて前記電機子両端間に接続すると共に
前記直巻整流子電動機に対する電源供給を遮断し
て前記電機子に発電制動を付与するための電源ス
イツチとのそれぞれを備えた直巻整流子電動機用
発電制動装置にある。 The present invention provides a series commutator motor consisting of an armature and two field coils, by switching the connection of the two field coils in series or parallel to operate the series commutator motor at low speed or at high speed. A two-speed shift switch for switching to operation, and a two-speed shift switch for switching to operation, and the two-speed
a power switch for reversing the polarity of one of the specified field coils and connecting it across both ends of the armature, and cutting off the power supply to the series commutator motor to apply dynamic braking to the armature; and a dynamic braking system for a series-wound commutator motor.
これによつて本考案は、直巻整流子電動機を低
速・高速運転切換可能にした状態で低速・高速運
転からの発電制動を一定にして、低・高速運転に
拘らず直巻整流子電動機に適切な制動特性を付与
することができる効果がある。 As a result, the present invention enables the series-wound commutator motor to be switched between low-speed and high-speed operation, and maintains constant dynamic braking from low-speed and high-speed operation, so that the series-wound commutator motor can be switched between low and high speeds. This has the effect of imparting appropriate braking characteristics.
第１図と第２図は従来の実施例の電気回路図、
第３図は本考案の第１実施例の電気回路図、第４
図は本考案の第２実施例の電気回路図である。
SW５，SW７……２段変速スイツチ、SW６，
SW８……電源スイツチ、Ｆ５〜Ｆ８……フイー
ルドコイル、Ａ……電機子、AC……電源。
Figures 1 and 2 are electrical circuit diagrams of conventional embodiments;
Figure 3 is an electrical circuit diagram of the first embodiment of the present invention;
The figure is an electrical circuit diagram of a second embodiment of the present invention. SW5, SW7...2-speed shift switch, SW6,
SW8...power switch, F5-F8...field coil, A...armature, AC...power supply.
Claims (1)
巻整流子電動機において、前記２個のフイールド
コイルの接続を直列或は並列に切換て前記直巻整
流子電動機を低速運転或は高速運転に切換るため
の２段変速スイツチと、前記２段変速スイツチの
低速・高速切換状態に関係なく前記２個のフイー
ルドコイルの特定した一方をその極性を反転させ
て前記電機子両端間に接続すると共に前記直巻整
流子電動機に対する電源供給を遮断して前記電機
子に発電制動を付与するための電源スイツチとの
それぞれを備えた直巻整流子電動機用発電制動装
置。 In a series commutator motor consisting of an armature and two field coils, the connection of the two field coils is switched to series or parallel to switch the series commutator motor to low speed operation or high speed operation. a two-speed shift switch for the purpose of the present invention, and a specified one of the two field coils is connected across both ends of the armature with its polarity reversed, regardless of the low-speed/high-speed switching state of the two-speed shift switch; and a power switch for cutting off power supply to the wound commutator motor and applying dynamic braking to the armature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981040416U JPS6338719Y2 (en) | 1981-03-23 | 1981-03-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981040416U JPS6338719Y2 (en) | 1981-03-23 | 1981-03-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57154299U JPS57154299U (en) | 1982-09-28 |
| JPS6338719Y2 true JPS6338719Y2 (en) | 1988-10-12 |
Family
ID=29837529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981040416U Expired JPS6338719Y2 (en) | 1981-03-23 | 1981-03-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6338719Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3530685C5 (en) * | 1985-08-28 | 2005-07-21 | Fa. Andreas Stihl | Electric motor chainsaw |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5373318A (en) * | 1976-12-11 | 1978-06-29 | Shibaura Eng Works Ltd | Dynamic braking device in motor |
-
1981
- 1981-03-23 JP JP1981040416U patent/JPS6338719Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5373318A (en) * | 1976-12-11 | 1978-06-29 | Shibaura Eng Works Ltd | Dynamic braking device in motor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57154299U (en) | 1982-09-28 |
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