JPS61181675U - - Google Patents

Info

Publication number
JPS61181675U
JPS61181675U JP6470485U JP6470485U JPS61181675U JP S61181675 U JPS61181675 U JP S61181675U JP 6470485 U JP6470485 U JP 6470485U JP 6470485 U JP6470485 U JP 6470485U JP S61181675 U JPS61181675 U JP S61181675U
Authority
JP
Japan
Prior art keywords
drive circuit
motor
circuit
sub
tightening
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
JP6470485U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP6470485U priority Critical patent/JPS61181675U/ja
Publication of JPS61181675U publication Critical patent/JPS61181675U/ja
Pending legal-status Critical Current

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Landscapes

  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Description

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

第１図は本考案の電動ドライバの制御回路系の
回路図、第２図は本考案の電動ドライバの動作説
明図、第３図は従来の電流制御式電動ドライバの
回路図である。 １……直流モータ、２……電源部、３……締付
トルク設定回路、４……主駆動回路、５……副駆
動回路、６……切換制御パルス発生回路。 FIG. 1 is a circuit diagram of the control circuit system of the electric screwdriver of the present invention, FIG. 2 is an explanatory diagram of the operation of the electric screwdriver of the present invention, and FIG. 3 is a circuit diagram of a conventional current-controlled electric screwdriver. DESCRIPTION OF SYMBOLS 1...DC motor, 2...Power supply unit, 3...Tightening torque setting circuit, 4...Main drive circuit, 5...Subdrive circuit, 6...Switching control pulse generation circuit.

Claims (1)

【実用新案登録請求の範囲】 ビツトと、該ビツトの回転駆動用直流モータを
有するドライバ本体と、 上記直流モータに駆動用電力を与える電源部と
、締付けトルク設定回路と、該締付トルク設定回
路のトルク設定値に達して所定時間を経過するま
で上記直流モータにねじ締め用の電流を流す主駆
動回路と、上記所定時間経過しねじ締めが完了し
た時に上記直流モータに微小電流を流して低速回
転を行なう副駆動回路と、上記主駆動回路に流れ
る電流の検出信号を入力し該主駆動回路と副駆動
回路の切換えを行ないかつその切換動作開始時期
と切換え後の副駆動回路の通電時間幅を制御する
パルスを発生する切換制御パルス発生回路とを有
してなる制御回路部を備えた電流制御式電動ドラ
イバであつて、 ねじ締め完了後に上記直流モータが所定時間自
動的に低速回転に切換わり、その後ねじ締めを行
なう所定の回転数に復帰するようにしたことを特
徴とする電動ドライバ。[Scope of Claim for Utility Model Registration] A bit, a driver body having a DC motor for rotationally driving the bit, a power supply section that supplies driving power to the DC motor, a tightening torque setting circuit, and the tightening torque setting circuit. A main drive circuit that supplies a screw tightening current to the DC motor until the torque setting value is reached and a predetermined time has elapsed; A detection signal of the current flowing in the sub-drive circuit that performs rotation and the main drive circuit is input to switch between the main drive circuit and the sub-drive circuit, and the switching operation start timing and the energization time width of the sub-drive circuit after switching are input. A current-controlled electric screwdriver is equipped with a control circuit section comprising a switching control pulse generation circuit that generates pulses for controlling the motor, and the DC motor automatically switches to low-speed rotation for a predetermined period of time after screw tightening is completed. An electric screwdriver characterized in that the rotation speed returns to a predetermined rotation speed for tightening screws.
JP6470485U 1985-04-30 1985-04-30 Pending JPS61181675U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6470485U JPS61181675U (en) 1985-04-30 1985-04-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6470485U JPS61181675U (en) 1985-04-30 1985-04-30

Publications (1)

Publication Number Publication Date
JPS61181675U true JPS61181675U (en) 1986-11-12

Family

ID=30596037

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6470485U Pending JPS61181675U (en) 1985-04-30 1985-04-30

Country Status (1)

Country Link
JP (1) JPS61181675U (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4968399A (en) * 1972-11-04 1974-07-02
JPS5315240A (en) * 1976-07-27 1978-02-10 Evg Entwicklung Verwert Ges Multiple spot type elctric resistance welding machine
JPS5558986A (en) * 1978-10-26 1980-05-02 Matsushita Electric Ind Co Ltd Electric driver
JPS56134181A (en) * 1980-03-21 1981-10-20 Tokyo Shibaura Electric Co Clamping device for screw
JPS56139880A (en) * 1980-03-28 1981-10-31 Haimachitsuku Kk Motor driver

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4968399A (en) * 1972-11-04 1974-07-02
JPS5315240A (en) * 1976-07-27 1978-02-10 Evg Entwicklung Verwert Ges Multiple spot type elctric resistance welding machine
JPS5558986A (en) * 1978-10-26 1980-05-02 Matsushita Electric Ind Co Ltd Electric driver
JPS56134181A (en) * 1980-03-21 1981-10-20 Tokyo Shibaura Electric Co Clamping device for screw
JPS56139880A (en) * 1980-03-28 1981-10-31 Haimachitsuku Kk Motor driver

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