JPS607965U - electric screwdriver - Google Patents

electric screwdriver

Info

Publication number
JPS607965U
JPS607965U JP10055983U JP10055983U JPS607965U JP S607965 U JPS607965 U JP S607965U JP 10055983 U JP10055983 U JP 10055983U JP 10055983 U JP10055983 U JP 10055983U JP S607965 U JPS607965 U JP S607965U
Authority
JP
Japan
Prior art keywords
motor
power supply
electric screwdriver
supply section
control section
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
Application number
JP10055983U
Other languages
Japanese (ja)
Inventor
清 日野
羽鳥 俊二
Original Assignee
日本電気精器株式会社
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 日本電気精器株式会社 filed Critical 日本電気精器株式会社
Priority to JP10055983U priority Critical patent/JPS607965U/en
Publication of JPS607965U publication Critical patent/JPS607965U/en
Pending legal-status Critical Current

Links

Landscapes

  • Motor And Converter Starters (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は先願の電動ドライバの要部構成を示す回路図、
第2図は本考案の電動ドライバの一実施例の要部構成を
示す回路図、第3図は第2図の回路構成におけるスター
トスイッチ投入直後の波形図で、同IE9aは同期パル
ス、bは点弧パルス、Cはモータに加わる電圧の変化状
態を示している。 1・・・・・・直流モータ、2・・・・・・主電源部、
3・・・・・・半導体スイッチ素子、4・・・・・・制
御部、5・・・・・・補助電源部、40・・・・・・指
令信号発生回路、41・・・・・・差動増幅器、42・
・・・・・点弧回路、43・・・・・・移相器、VRl
・・・・・・速度指令可変抵抗器、vR2・・・・・・
ソフトスタート時定数調整用可変抵抗器、C8・・・・
・・ソフトスタート用コンデンサ。
Figure 1 is a circuit diagram showing the main part configuration of the electric screwdriver of the earlier application.
FIG. 2 is a circuit diagram showing the main part configuration of an embodiment of the electric driver of the present invention, and FIG. 3 is a waveform diagram immediately after turning on the start switch in the circuit configuration of FIG. The ignition pulse, C, shows the changing state of the voltage applied to the motor. 1...DC motor, 2...Main power supply section,
3...Semiconductor switch element, 4...Control unit, 5...Auxiliary power supply unit, 40...Command signal generation circuit, 41...・Differential amplifier, 42・
...Ignition circuit, 43...Phase shifter, VRl
...Speed command variable resistor, vR2...
Variable resistor for soft start time constant adjustment, C8...
・Soft start capacitor.

Claims (1)

【実用新案登録請求の範囲】 ビットを取付けて回転させる電動ドライバの本体と、 上記電動ドライバの回転駆動用直流モータと、該直流モ
ータに駆動用電力を与えるための整流スタックを有する
主電源部と、 該主電源部から上記直流モータへ与える駆動用電力を制
御するための半導体スイッチ素子と、該半導体スイッチ
素子のスイッチングを制御する指令信号発生回路を有す
る制御部と、該制御部を動作させるための直流電圧を発
生する整流スタックを有する補助電源部と、該補助電源
部と上記制御部間に設けたスタートスイッチと、 を備えて構成される電動ドライバであって、上記制御部
に、ソフトスタート用コンデンサとその時定数を設定す
る可変抵抗器とを“有するソフトスタート調整回路と、
該調整回路により設定された時定数に基つく信号を増幅
する増幅器と、該増幅器の出力電圧を分圧し所望の回転
速度指令用電圧を取出す速度指令可変抵抗器とを設け、
該速度指令可変抵抗器からの回転速度指令用電圧を上記
指令信号発生回路に入力して上記直流モータの定常状態
における回転速度を所望の値に側御するとともに、上記
スタートスイッチ投入直後における回転速度を徐々に上
昇せしめ、かつ上記定常状態の回転速度に達するまでの
時間を調整可能にしたことを特徴とする電動ドライバ。
[Scope of Claim for Utility Model Registration] A main body of an electric screwdriver to which a bit is attached and rotated, a DC motor for rotational driving of the electric screwdriver, and a main power supply section having a rectifier stack for supplying driving power to the DC motor. , a control section having a semiconductor switch element for controlling driving power supplied from the main power supply section to the DC motor, a command signal generation circuit for controlling switching of the semiconductor switch element, and a control section for operating the control section. An electric driver comprising: an auxiliary power supply section having a rectifier stack that generates a DC voltage; a start switch provided between the auxiliary power supply section and the control section; a soft start adjustment circuit comprising a capacitor for the
An amplifier for amplifying a signal based on a time constant set by the adjustment circuit, and a speed command variable resistor for dividing the output voltage of the amplifier to obtain a desired rotation speed command voltage,
The rotational speed command voltage from the speed command variable resistor is input to the command signal generation circuit to control the rotational speed of the DC motor in a steady state to a desired value, and also to control the rotational speed immediately after the start switch is turned on. An electric screwdriver characterized in that the rotation speed is gradually increased, and the time taken to reach the steady state rotation speed is adjustable.
JP10055983U 1983-06-29 1983-06-29 electric screwdriver Pending JPS607965U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10055983U JPS607965U (en) 1983-06-29 1983-06-29 electric screwdriver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10055983U JPS607965U (en) 1983-06-29 1983-06-29 electric screwdriver

Publications (1)

Publication Number Publication Date
JPS607965U true JPS607965U (en) 1985-01-19

Family

ID=30237830

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10055983U Pending JPS607965U (en) 1983-06-29 1983-06-29 electric screwdriver

Country Status (1)

Country Link
JP (1) JPS607965U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009050932A (en) * 2007-08-24 2009-03-12 Makita Corp Power tool
JP2019030200A (en) * 2017-08-04 2019-02-21 株式会社シブヤ Power transformer for electric power tool

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5327802A (en) * 1976-08-26 1978-03-15 Yoshio Ikeda Method and means of lavel printing plate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5327802A (en) * 1976-08-26 1978-03-15 Yoshio Ikeda Method and means of lavel printing plate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009050932A (en) * 2007-08-24 2009-03-12 Makita Corp Power tool
JP2019030200A (en) * 2017-08-04 2019-02-21 株式会社シブヤ Power transformer for electric power tool

Similar Documents

Publication Publication Date Title
JPS607965U (en) electric screwdriver
JPS607969U (en) electric screwdriver
JPS59143664U (en) electric screwdriver
JPS59143665U (en) electric screwdriver
JPS59143663U (en) electric screwdriver
JPS60131171A (en) Electric driver
JPS58172984A (en) Speed controller for dc motor
JPS61147792A (en) Motor driven tool
JPH0441617Y2 (en)
JPS62262689A (en) Power source circuit for dc motor
JPH02123731U (en)
JPH0363093U (en)
JPS6284392U (en)
JPH0265478A (en) Power supply system
JPS62141141U (en)
JPH0245521U (en)
JPS58145096U (en) DC motor start-up circuit
JPS5957000U (en) Stepping motor drive circuit
JPS6377491U (en)
JPS6146899U (en) Motor control device
JPS58173936U (en) Channel selection device
JPS5953697U (en) Dental DC motor rotation speed control circuit
JPS6233700U (en)
JPH0244897U (en)
JPS5851696U (en) Motor speed control circuit