JP2003192232A - Tension control device for cord - Google Patents

Tension control device for cord

Info

Publication number
JP2003192232A
JP2003192232A JP2001391333A JP2001391333A JP2003192232A JP 2003192232 A JP2003192232 A JP 2003192232A JP 2001391333 A JP2001391333 A JP 2001391333A JP 2001391333 A JP2001391333 A JP 2001391333A JP 2003192232 A JP2003192232 A JP 2003192232A
Authority
JP
Japan
Prior art keywords
circuit
motor
voltage
constant current
control device
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.)
Granted
Application number
JP2001391333A
Other languages
Japanese (ja)
Other versions
JP3876160B2 (en
Inventor
Kokuka O
国華 王
Yasushi Kurita
康史 栗田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nitta Corp
Original Assignee
Nitta Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nitta Corp filed Critical Nitta Corp
Priority to JP2001391333A priority Critical patent/JP3876160B2/en
Priority to PCT/JP2002/013204 priority patent/WO2003056695A1/en
Priority to CNB028261259A priority patent/CN1312836C/en
Publication of JP2003192232A publication Critical patent/JP2003192232A/en
Priority to HK05107321A priority patent/HK1075138A1/en
Application granted granted Critical
Publication of JP3876160B2 publication Critical patent/JP3876160B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/40—Applications of tension indicators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/10—Ensuring correct operation
    • B65H2601/12—Compensating; Taking-up

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tension control device for a cord capable of constantly controlling tension even when a rotational speed of a motor is lowered, and capable of applying forwardly biasing voltage to a constant current circuit 3 which is generated at a voltage circuit 4 at least even when the rotational speed of the motor M is lowered and the output voltage is lowered, and thereby non-action of the constant current circuit 3 at lowering of the rotational speed of the motor M is prevented, and the tension of the cord is always controlled constantly. <P>SOLUTION: This tension control device for the cord is provided with the brushless motor M generating counter electromotive voltage in accordance with the rotational speed, a rectifier circuit 2 connected to a winding wire of the brushless motor M, and the constant current circuit 3 connected to the rectifier circuit 2. The voltage circuit 4 for applying the forwarding biasing voltage is inserted between the constant current circuit 3 and the rectifier circuit 2. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、糸、リボン、ベル
ト、電線などのコード類に一定の張力を与えるためのコ
ード類の張力制御装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cord tension control device for applying a constant tension to cords such as threads, ribbons, belts and electric wires.

【０００２】[0002]

【従来の技術】コード類の張力制御装置は、コード類を
巻き取る巻き取り機に使用され、一定の張力でのコード
類の巻き取りを可能にする。この張力制御装置は、図４
に示すように、テンションプーリ１１と、テンションプ
ーリ１１と同軸に設けられ同伴回転するモータＭとを有
している。コード類１２が走行すると、テンションプー
リ１１を介してモータＭが回され、モータＭに発生した
トルクによってコード類１２に張力が付与される。2. Description of the Related Art A tension control device for cords is used in a winder for winding the cords and enables the cords to be wound at a constant tension. This tension control device is shown in FIG.
As shown in FIG. 3, the tension pulley 11 and the motor M that is provided coaxially with the tension pulley 11 and rotates together with the tension pulley 11 are included. When the cords 12 run, the motor M is rotated via the tension pulley 11, and the torque generated in the motor M applies tension to the cords 12.

【０００３】前記モータＭは、回転が加えられると逆起
電圧が生じる。この逆起電圧をモータＭに内蔵されてい
る定電流回路に入力すると、モータの回転速度にかかわ
らずトルクが一定になり、一定の張力を付与できるよう
になる（特開平11-325203号公報、特開平11-301927号公
報参照）。When the motor M is rotated, a counter electromotive voltage is generated. When this counter electromotive voltage is input to the constant current circuit built in the motor M, the torque becomes constant regardless of the rotation speed of the motor, and a constant tension can be applied (Japanese Patent Laid-Open No. 11-325203, (See Japanese Patent Laid-Open No. 11-301927).

【０００４】[0004]

【発明が解決しようとする課題】ところが、前記のコー
ド類の張力制御装置では、コード類の繰り出し速度が下
がって、その結果モータの回転速度が下がると、定電流
回路が一定の電流を維持できなくなるという問題があ
る。詳しく説明すると、定電流回路は、一般に、トラン
ジスタのコレクタ電流が、コレクタ−エミッタ電圧（又
はコレクタ−ベース電圧）の変動にかわらず一定となる
という原理を利用している。一定のコレクタ電流を流す
ためには、最低限必要なコレクタ−エミッタ電圧（又は
コレクタ−ベース電圧）が存在する。However, in the above-mentioned cord tension control device, when the feeding speed of the cords decreases and the rotation speed of the motor decreases as a result, the constant current circuit can maintain a constant current. There is a problem of disappearing. More specifically, the constant current circuit generally uses the principle that the collector current of a transistor is constant regardless of the variation of the collector-emitter voltage (or collector-base voltage). There is a minimum required collector-emitter voltage (or collector-base voltage) in order to flow a constant collector current.

【０００５】ところが、モータの回転速度が下がると、
モータの逆起電圧が低下する。ブラシレスモータを用い
た場合整流回路のダイオードによる電圧降下があり、ブ
ラシ付きのモータを用いた場合ブラシ接触抵抗による電
圧降下があるために、いずれも低回転速度時の逆起電圧
の低下が著しくなる。このため、定電流回路に一定の電
流を流すために必要な電圧が確保できず、定電流を維持
できなくなる。したがって、モータのトルクが一定にな
らず、コード類に一定張力がかからなくなってしまう。However, when the rotation speed of the motor decreases,
The back electromotive force of the motor decreases. When a brushless motor is used, there is a voltage drop due to the diode in the rectifier circuit, and when a brushed motor is used, there is a voltage drop due to the brush contact resistance. . For this reason, the voltage required to flow a constant current through the constant current circuit cannot be secured, and the constant current cannot be maintained. Therefore, the torque of the motor is not constant, and constant tension is not applied to the cords.

【０００６】そこで、本発明は、モータの回転速度にか
かわらず、張力を一定に制御することができるコード類
の張力制御装置を実現することを目的とする。また本発
明は、モータの回転によって生じた電力を回収すること
ができるコード類の張力制御装置を実現することを目的
とする。[0006] Therefore, an object of the present invention is to realize a tension control device for cords which can control the tension constant regardless of the rotation speed of the motor. Another object of the present invention is to realize a cord tension control device that can recover electric power generated by the rotation of a motor.

【０００７】[0007]

【課題を解決するための手段】本発明のコード類の張力
制御装置は、回転速度に応じて逆起電圧を発生するモー
タと、前記モータに接続された定電流回路とを備え、前
記定電流回路とモータとの間に、順方向バイアス電圧を
与える電圧回路を挿入している（請求項１）。この構成
によれば、モータの回転速度が低下し、出力電圧が低下
しても、定電流回路には、最低限、前記電圧回路で発生
する順方向バイアス電圧が加えられる。したがって、モ
ータの回転速度低下時における定電流回路の不動作はな
くなり、コード類の張力は、常に、一定に制御される。A tension control device for cords according to the present invention comprises a motor for generating a counter electromotive voltage in accordance with a rotation speed and a constant current circuit connected to the motor. A voltage circuit for applying a forward bias voltage is inserted between the circuit and the motor (claim 1). According to this configuration, even if the rotation speed of the motor decreases and the output voltage decreases, the forward bias voltage generated in the voltage circuit is applied to the constant current circuit at a minimum. Therefore, the constant current circuit does not operate when the rotation speed of the motor decreases, and the tension of the cords is always controlled to be constant.

【０００８】前記モータがブラシレスモータであり、ブ
ラシレスモータの巻き線に整流回路が接続されている場
合は、請求項１記載の作用が得られるとともに,整流回
路の中のダイオードの順方向電圧低下を、前記電圧回路
によって補償することができる（請求項２）。前記モー
タが複数あり、これらのモータと前記定電流回路が直列
に接続されている場合にも、前記電圧回路を挿入するこ
とによって（請求項３）、請求項１記載の作用が得られ
る。この構成では、1つの電圧回路で、複数のモータに
対応することができる。When the motor is a brushless motor and the rectifier circuit is connected to the winding of the brushless motor, the operation according to claim 1 is obtained and the forward voltage drop of the diode in the rectifier circuit is achieved. , Can be compensated by the voltage circuit (claim 2). Even when there are a plurality of the motors and these motors and the constant current circuit are connected in series, by inserting the voltage circuit (Claim 3), the operation according to Claim 1 can be obtained. With this configuration, one voltage circuit can support a plurality of motors.

【０００９】モータの逆起電圧がしきい値を超えて発生
したことを条件として、モータ電流を負荷に流す電力回
生回路をさらに備えることが望ましい（請求項４）。こ
の電力回生回路によって、モータの回転速度が高回転の
ときに、モータから発生する電力を回生して、従来なら
ば熱になって棄てられていたエネルギーを有効に利用す
ることができるようになる。本発明のコード類の張力制
御装置は、回転速度に応じて逆起電圧を発生するモータ
と、前記モータに接続された定電流回路と、モータの逆
起電圧がしきい値を超えて発生したことを条件として、
モータ電流を負荷に流す電力回生回路とを備えるもので
もよい。この電力回生回路によって、高回転時にモータ
から発生する電力を回生して、電力を有効に利用するこ
とができるようになる。It is desirable to further include an electric power regeneration circuit for supplying a motor current to a load on condition that the counter electromotive voltage of the motor exceeds a threshold value. With this electric power regeneration circuit, when the rotation speed of the motor is high, the electric power generated from the motor can be regenerated, and the energy that was conventionally turned into heat and wasted can be effectively used. . The tension control device for cords of the present invention has a motor that generates a back electromotive voltage according to the rotation speed, a constant current circuit connected to the motor, and a back electromotive voltage of the motor that exceeds a threshold value. On the condition that
An electric power regeneration circuit that causes a motor current to flow through the load may be provided. By this power regeneration circuit, the electric power generated from the motor at the time of high rotation can be regenerated and the electric power can be effectively used.

【００１０】[0010]

【発明の実施の形態】以下、本発明の実施の形態を、添
付図面を参照しながら詳細に説明する。図１は、本発明
の張力制御装置の一例を示す回路図である。張力制御装
置１は、三相ブラシレスモータ（以下「ブラシレスモー
タ」という）Ｍの出力電圧を整流回路２により整流し、
この整流出力を定電流回路３に供給している。整流回路
２、定電流回路３はブラシレスモータＭの内部基板に搭
載されていてモータ回転軸とともに回転するものであっ
てもよく、ブラシレスモータＭに外付けされるものであ
ってもよいが、図１ではブラシレスモータＭに内蔵され
るものとして説明をする。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a circuit diagram showing an example of the tension control device of the present invention. The tension control device 1 rectifies the output voltage of a three-phase brushless motor (hereinafter referred to as “brushless motor”) M by a rectification circuit 2,
This rectified output is supplied to the constant current circuit 3. The rectifier circuit 2 and the constant current circuit 3 may be mounted on the internal substrate of the brushless motor M and rotated together with the motor rotation shaft, or may be externally attached to the brushless motor M. 1 will be described as being incorporated in the brushless motor M.

【００１１】整流回路２の出力電圧は、ブラシレスモー
タＭの回転速度の変動に応じて変動する。そこで、整流
回路２の出力電圧を時間ｔの関数Ｅ(t)で表す。定電流
回路３は、定電流トランジスタＱ１、抵抗Ｒ１、並びに
定電流トランジスタＱ１のベースに一定電圧を供給する
ための定電圧ダイオードＺＤ及び抵抗Ｒ２を有してい
る。さらに、定電流回路３と直列に、定電圧回路４が挿
入されている。定電圧回路４の回路構成は、任意であ
り、公知の定電圧回路や充電式電池などを使用すること
ができる。定電圧回路４は、外部から電源を供給する必
要があることから、ブラシレスモータＭに内蔵すること
はできないものである。そこで、定電圧回路４は、ブラ
シレスモータＭの外部端子Ｔ１，Ｔ２に接続される（図
において○印は端子を表す。以下同じ）。The output voltage of the rectifier circuit 2 fluctuates according to the fluctuation of the rotation speed of the brushless motor M. Therefore, the output voltage of the rectifier circuit 2 is represented by a function E (t) of time t. The constant current circuit 3 has a constant current transistor Q1, a resistor R1, a constant voltage diode ZD for supplying a constant voltage to the base of the constant current transistor Q1, and a resistor R2. Further, a constant voltage circuit 4 is inserted in series with the constant current circuit 3. The circuit configuration of the constant voltage circuit 4 is arbitrary, and a known constant voltage circuit, a rechargeable battery or the like can be used. The constant voltage circuit 4 cannot be built in the brushless motor M because it is necessary to supply power from the outside. Therefore, the constant voltage circuit 4 is connected to the external terminals T1 and T2 of the brushless motor M (in the figure, the circles represent terminals. The same applies hereinafter).

【００１２】この定電圧回路４の電圧をバイアス電圧Ｅ
0という。バイアス電圧Ｅ0は時間変動しない一定の値と
なる。前記定電流回路３の定電流トランジスタＱ１のコ
レクタ−エミッタ間には、前記整流回路２の出力電圧Ｅ
(t)と、定電圧回路４のバイアス電圧Ｅ0との合計した電
圧Ｅ(t)＋Ｅ0が印加される。前記定電流トランジスタＱ
１は、定電圧ダイオードＺＤによりベースに一定電圧が
供給されるので、常時オン状態にされている。The voltage of the constant voltage circuit 4 is set to the bias voltage E
Called 0. The bias voltage E0 has a constant value that does not change with time. Between the collector and the emitter of the constant current transistor Q1 of the constant current circuit 3, the output voltage E of the rectifier circuit 2 is provided.
The total voltage E (t) + E0 of (t) and the bias voltage E0 of the constant voltage circuit 4 is applied. The constant current transistor Q
1, the constant voltage diode ZD supplies a constant voltage to the base, and therefore, 1 is always on.

【００１３】前記定電流トランジスタＱ１のコレクタ−
エミッタ間に与えられる電圧は、ブラシレスモータＭの
回転速度が低下して、電圧Ｅ(t)が0にまで低下しても、
定電圧回路４があるために、最低限、バイアス電圧Ｅ0
が確保される。このため、バイアス電圧Ｅ0の値を、前
記定電流トランジスタＱ１に一定のコレクタ電流を流す
ことができる最低電圧以上に選べば、前記ブラシレスモ
ータＭに常に、一定の電流を流すことができる。したが
って、ブラシレスモータＭの回転トルクを、低回転時で
も一定に制御することができる。The collector of the constant current transistor Q1
Even if the voltage E (t) drops to 0 due to the decrease in the rotation speed of the brushless motor M, the voltage applied between the emitters is
Since there is the constant voltage circuit 4, at least the bias voltage E0
Is secured. Therefore, if the value of the bias voltage E0 is selected to be equal to or higher than the minimum voltage that allows a constant collector current to flow in the constant current transistor Q1, a constant current can always flow in the brushless motor M. Therefore, the rotation torque of the brushless motor M can be controlled to be constant even when the rotation speed is low.

【００１４】次に、複数のブラシレスモータＭ１，Ｍ
２，．．．，Ｍｎを使用した場合の本発明の実施形態を
説明する。本発明の実施形態では、定電流回路３と定電
圧回路４とは、それぞれ１つ設置するだけで済ませてい
る（したがって、各ブラシレスモータＭ１，Ｍ
２，．．．，Ｍｎは定電流回路を内蔵しないタイプとな
る）。図２は、複数のブラシレスモータＭ１，Ｍ
２，．．．，Ｍｎを使用したコード類の張力制御装置１
の回路図である。Next, a plurality of brushless motors M1, M
2 ,. ． ． , Mn is used for the embodiment of the present invention. In the embodiment of the present invention, only one constant current circuit 3 and one constant voltage circuit 4 have to be installed (hence, the brushless motors M1 and M).
2 ,. ． ． , Mn is a type without a built-in constant current circuit). FIG. 2 shows a plurality of brushless motors M1 and M.
2 ,. ． ． , Mn using cord tension control device 1
It is a circuit diagram of.

【００１５】各ブラシレスモータＭ１，Ｍ２，．．．，
Ｍｎには、それぞれ整流回路２１，２２，．．．，２ｎ
が接続され、各整流回路２１，２２，．．．，２ｎの出
力端子Ｔ１，Ｔ２，．．．と、定電流回路３と電力回生
回路５と定電圧回路４とが直列に接続されている。各整
流回路２１，２２，．．．，２ｎ及び定電圧回路４の出
力電圧の和をＥ0＋Ｅ(t)と書く。Each brushless motor M1, M2 ,. ． ． ，
The Mn has rectification circuits 21, 22 ,. ． ． , 2n
Are connected to each of the rectifier circuits 21, 22 ,. ． ． , 2n output terminals T1, T2 ,. ． ． The constant current circuit 3, the power regeneration circuit 5, and the constant voltage circuit 4 are connected in series. Each of the rectifier circuits 21, 22 ,. ． ． , 2n and the output voltage of the constant voltage circuit 4 are written as E0 + E (t).

【００１６】前記出力電圧Ｅ0＋Ｅ(t)は、直列に接続さ
れた定電流回路３と電力回生回路５とに印加される。定
電流回路３の作用及び定電圧回路４の作用は、図１を用
いて説明したのと同様、各ブラシレスモータＭ１，Ｍ
２，．．．，Ｍｎに、一定の電流を流すことであり、こ
こでは重複説明は省略する。電力回生回路５は、ブラシ
レスモータＭ１，Ｍ２，．．．，Ｍｎの回転速度が比較
的高速の時に、負荷ＺLに電力を供給するとともに、コ
ンデンサＣにエネルギーを蓄えるための回路である。The output voltage E0 + E (t) is applied to the constant current circuit 3 and the power regeneration circuit 5 connected in series. The operation of the constant current circuit 3 and the operation of the constant voltage circuit 4 are the same as those described with reference to FIG.
2 ,. ． ． , Mn is to flow a constant current, and redundant description will be omitted here. The power regeneration circuit 5 includes brushless motors M1, M2 ,. ． ． , Mn is a circuit for supplying power to the load ZL and storing energy in the capacitor C when the rotation speed of Mn is relatively high.

【００１７】電力回生回路５は、スイッチングトランジ
スタＱ２を備え、このスイッチングトランジスタＱ２と
並列に、互いに直列なダイオードＤ及びコンデンサＣを
接続している。コンデンサＣには負荷ＺLがつながれて
いる。この負荷ＺLの種類は、任意である（例えば負荷
ＺLは照明器具でもよい）。スイッチングトランジスタ
Ｑ２のゲートには、制御回路６からの信号が供給され
る。制御回路６は、前記ブラシレスモータＭ及び定電圧
回路４の出力電圧Ｅ0＋Ｅ(t)に基づいて、電圧Ｅ0＋Ｅ
(t)がしきい値を超えれば、スイッチングトランジスタ
をオフとし、しきい値以下であれば、スイッチングトラ
ンジスタをオンとする制御を行う。制御回路６は、構成
は限定されないが、例えばマイクロコンピュータを用い
た公知の回路を採用することができる。The power regeneration circuit 5 includes a switching transistor Q2, and a diode D and a capacitor C, which are in series with each other, are connected in parallel with the switching transistor Q2. A load ZL is connected to the capacitor C. The type of the load ZL is arbitrary (for example, the load ZL may be a lighting device). A signal from the control circuit 6 is supplied to the gate of the switching transistor Q2. The control circuit 6 controls the voltage E0 + E based on the output voltage E0 + E (t) of the brushless motor M and the constant voltage circuit 4.
If (t) exceeds the threshold value, the switching transistor is turned off, and if it is less than the threshold value, the switching transistor is turned on. Although the configuration of the control circuit 6 is not limited, for example, a known circuit using a microcomputer can be adopted.

【００１８】以上の電力回生回路５の動作を説明する
と、ブラシレスモータＭの回転速度が低く、電圧Ｅ0＋
Ｅ(t)がしきい値以下であれば、スイッチングトランジ
スタＱ２はオンとなるので、電流は、スイッチングトラ
ンジスタＱ２を通って流れる。電力回生回路５の抵抗は
低く、電力回生回路５はほとんど電力を消費しない。こ
のとき、負荷ＺLにはコンデンサＣに蓄えられた電荷か
ら電流が供給されるのみである。The operation of the power regeneration circuit 5 will be described. The rotation speed of the brushless motor M is low and the voltage E0 +
If E (t) is less than or equal to the threshold value, the switching transistor Q2 is turned on, so that the current flows through the switching transistor Q2. The resistance of the power regeneration circuit 5 is low, and the power regeneration circuit 5 consumes almost no power. At this time, only current is supplied to the load ZL from the electric charge stored in the capacitor C.

【００１９】ブラシレスモータＭの回転速度が高く、電
圧Ｅ0＋Ｅ(t)がしきい値を超えると、スイッチングトラ
ンジスタＱ２はオフとなるので、電流は、ダイオードＤ
を通して、負荷ＺLに流れる。負荷ＺLを含めた電力回生
回路５の抵抗は等価的に高くなり、ブラシレスモータＭ
で発生した電力を消費する。また、同時にコンデンサＣ
にも流れ、ここでエネルギーが蓄積される。したがっ
て、高回転時、電力回生回路５がない場合なら、定電流
回路３やモータＭで発生して失われるはずのエネルギー
を、電力回生回路５によって回生して負荷ＺLに供給す
ることができるので、電力の有効利用を図ることができ
る。また、従来定電流回路３に取り付けていた放熱板を
なくすことができる。When the rotation speed of the brushless motor M is high and the voltage E0 + E (t) exceeds the threshold value, the switching transistor Q2 is turned off, so that the current flows through the diode D
Through the load ZL. The resistance of the power regeneration circuit 5 including the load ZL becomes equivalently high, and the brushless motor M
It consumes the power generated in. At the same time, the capacitor C
Also flows, where energy is stored. Therefore, at the time of high rotation, if the power regeneration circuit 5 is not provided, the energy that would otherwise be generated and lost in the constant current circuit 3 and the motor M can be regenerated by the power regeneration circuit 5 and supplied to the load ZL. Therefore, effective use of electric power can be achieved. Further, it is possible to eliminate the heat dissipation plate conventionally attached to the constant current circuit 3.

【００２０】以上で、本発明の実施の形態を説明した
が、本発明の実施は、前記の形態に限定されるものでは
ない。例えば、本発明は、ブラシレスモータＭでなく、
図３に示すように、ブラシ付きのモータＭ′にも適用で
きる。この場合は、整流回路２が省略されるのみで、他
の定電流回路３と定電圧回路４の動作は同様である。そ
の他、本発明の範囲内で種々の変更を施すことが可能で
ある。Although the embodiments of the present invention have been described above, the embodiments of the present invention are not limited to the above-mentioned embodiments. For example, the present invention is not the brushless motor M
As shown in FIG. 3, it can also be applied to a motor M'with a brush. In this case, the rectifier circuit 2 is omitted, and the other constant current circuit 3 and constant voltage circuit 4 operate in the same manner. Besides, various changes can be made within the scope of the present invention.

【００２１】[0021]

【発明の効果】以上のように本発明によれば、電圧回路
を挿入するだけの簡単な構成で、モータの低速回転時で
も、張力を一定に制御することができるようになる。ま
た、モータの高回転によって生じた電力を回収すること
により、電力の有効利用が達成できる。As described above, according to the present invention, the tension can be controlled to be constant even when the motor rotates at a low speed with a simple structure in which the voltage circuit is inserted. Also, by recovering the electric power generated by the high rotation of the motor, the effective use of the electric power can be achieved.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の張力制御装置の一例を示す回路図であ
る。FIG. 1 is a circuit diagram showing an example of a tension control device of the present invention.

【図２】複数のブラシレスモータＭを直列に接続したコ
ード類の張力制御装置の一例を示す回路図である。FIG. 2 is a circuit diagram showing an example of a tension control device for cords in which a plurality of brushless motors M are connected in series.

【図３】本発明をブラシレスモータＭでなく、ブラシ付
きのモータＭ′にも適用した場合の回路図である。FIG. 3 is a circuit diagram when the present invention is applied to not only a brushless motor M but also a motor M ′ with a brush.

【図４】張力制御装置の斜視図である。FIG. 4 is a perspective view of a tension control device.

【符号の説明】[Explanation of symbols]

１ コード類の張力制御装置 ２ 整流回路 ３ 定電流回路 ４ 定電圧回路 ５ 電力回生回路 ６ 制御回路 Ｍ ブラシレスモータ Ｍ′ブラシ付きのモータ 1 Cord tension control device 2 rectifier circuit 3 constant current circuit 4 constant voltage circuit 5 Power regeneration circuit 6 control circuit M brushless motor Motor with M'brush

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】コード類の張力を制御する装置であって、 回転速度に応じて逆起電圧を発生するモータと、前記モ
ータに接続された定電流回路とを備え、前記定電流回路
とモータとの間に、順方向バイアス電圧を与える電圧回
路を挿入したことを特徴とするコード類の張力制御装
置。1. A device for controlling the tension of cords, comprising: a motor that generates a counter electromotive voltage in accordance with a rotation speed; and a constant current circuit connected to the motor, the constant current circuit and the motor. A tension control device for cords, characterized in that a voltage circuit for applying a forward bias voltage is inserted between and. 【請求項２】前記モータは、ブラシレスモータであり、
前記ブラシレスモータの巻き線に整流回路が接続されて
いることを特徴とする請求項１記載のコード類の張力制
御装置。2. The motor is a brushless motor,
The tension control device for cords according to claim 1, wherein a rectifying circuit is connected to the winding of the brushless motor. 【請求項３】前記モータが複数あり、これらのモータと
前記定電流回路と前記電圧回路とが直列に接続されてい
ることを特徴とする請求項１又は請求項２記載のコード
類の張力制御装置。3. The tension control of cords according to claim 1, wherein there are a plurality of the motors, and the motors, the constant current circuit, and the voltage circuit are connected in series. apparatus. 【請求項４】モータの逆起電圧がしきい値を超えて発生
したことを条件として、モータ電流を負荷に流す電力回
生回路をさらに備えることを特徴とする請求項１から請
求項３のいずれかに記載のコード類の張力制御装置。4. A power regeneration circuit for flowing a motor current to a load, provided that the back electromotive force of the motor exceeds a threshold value, and the power regeneration circuit is further provided. A tension control device for cords according to the item crab.
JP2001391333A 2001-12-25 2001-12-25 Tension control device for cords Expired - Fee Related JP3876160B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2001391333A JP3876160B2 (en) 2001-12-25 2001-12-25 Tension control device for cords
PCT/JP2002/013204 WO2003056695A1 (en) 2001-12-25 2002-12-18 Cord tension control apparatus
CNB028261259A CN1312836C (en) 2001-12-25 2002-12-18 Cord tension control apparatus
HK05107321A HK1075138A1 (en) 2001-12-25 2005-08-22 Cord tension control apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001391333A JP3876160B2 (en) 2001-12-25 2001-12-25 Tension control device for cords

Publications (2)

Publication Number Publication Date
JP2003192232A true JP2003192232A (en) 2003-07-09
JP3876160B2 JP3876160B2 (en) 2007-01-31

Family

ID=19188506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001391333A Expired - Fee Related JP3876160B2 (en) 2001-12-25 2001-12-25 Tension control device for cords

Country Status (4)

Country Link
JP (1) JP3876160B2 (en)
CN (1) CN1312836C (en)
HK (1) HK1075138A1 (en)
WO (1) WO2003056695A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113460802A (en) * 2021-05-27 2021-10-01 宜兴市博宇电力机械有限公司 New energy tensioner and control method thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3831828B2 (en) * 1998-04-23 2006-10-11 ニッタ株式会社 Tension control device
JP4138939B2 (en) * 1998-05-19 2008-08-27 ニッタ株式会社 Tension control device
CN2334068Y (en) * 1998-07-02 1999-08-18 温汉静 Sound wave resonance instrument
CN2460796Y (en) * 2000-12-28 2001-11-21 达鹰企业有限公司 Device for regulating tension of transmission belt for wire cable processing machine

Also Published As

Publication number Publication date
HK1075138A1 (en) 2005-12-02
JP3876160B2 (en) 2007-01-31
CN1312836C (en) 2007-04-25
WO2003056695A1 (en) 2003-07-10
CN1608341A (en) 2005-04-20

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