JPS5775589A - Motor driven tool - Google Patents

Motor driven tool

Info

Publication number
JPS5775589A
JPS5775589A JP55151689A JP15168980A JPS5775589A JP S5775589 A JPS5775589 A JP S5775589A JP 55151689 A JP55151689 A JP 55151689A JP 15168980 A JP15168980 A JP 15168980A JP S5775589 A JPS5775589 A JP S5775589A
Authority
JP
Japan
Prior art keywords
switching element
motor
driven tool
motor driven
thermal breakdown
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
JP55151689A
Other languages
Japanese (ja)
Other versions
JPS644435B2 (en
Inventor
Fusao Fushiya
Takao Iwatsuki
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.)
Makita Corp
Original Assignee
Makita Electric Works Ltd
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 Makita Electric Works Ltd filed Critical Makita Electric Works Ltd
Priority to JP55151689A priority Critical patent/JPS5775589A/en
Priority to US06/314,419 priority patent/US4504769A/en
Priority to DE19813142749 priority patent/DE3142749A1/en
Publication of JPS5775589A publication Critical patent/JPS5775589A/en
Publication of JPS644435B2 publication Critical patent/JPS644435B2/ja
Granted 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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/10—Commutator motors, e.g. repulsion motors
    • H02P25/14—Universal motors
    • H02P25/145—Universal motors whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value, speed feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To prevent the thermal breakdown of a switching element by mounting the phase controlling switching element at the field coil of a motor, thereby efficiently dissipatig the heat of the switching element. CONSTITUTION:A switching element TRI1 for a phase control circuit for regulating the rotating speed of a motor is mounted at the field core 21 of the motor and is connected in series with the motor M1 for driving a motor-driven tool. Thus, the air flow rate is particularly high in the field core, thereby enhancing the cooling effect of the switching element and preventing the thermal breakdown of the switching element itself.
JP55151689A 1980-10-28 1980-10-28 Motor driven tool Granted JPS5775589A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55151689A JPS5775589A (en) 1980-10-28 1980-10-28 Motor driven tool
US06/314,419 US4504769A (en) 1980-10-28 1981-10-23 Electrically-powered tool
DE19813142749 DE3142749A1 (en) 1980-10-28 1981-10-28 ELECTRICALLY DRIVEN TOOL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55151689A JPS5775589A (en) 1980-10-28 1980-10-28 Motor driven tool

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP19788885A Division JPS61182757A (en) 1985-09-07 1985-09-07 Electric motor driven tool

Publications (2)

Publication Number Publication Date
JPS5775589A true JPS5775589A (en) 1982-05-12
JPS644435B2 JPS644435B2 (en) 1989-01-25

Family

ID=15524104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55151689A Granted JPS5775589A (en) 1980-10-28 1980-10-28 Motor driven tool

Country Status (1)

Country Link
JP (1) JPS5775589A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6067906U (en) * 1983-10-14 1985-05-14 株式会社　日立工機原町 Variable material feeding speed mechanism on automatic planing machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04153650A (en) * 1990-10-17 1992-05-27 Fujitsu Ltd Processing method for mask pattern data
KR102009360B1 (en) * 2018-10-22 2019-08-09 신호열 Method for providing reward according to online advertising

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS477606U (en) * 1971-02-18 1972-09-28
JPS4822487U (en) * 1971-07-20 1973-03-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS477606U (en) * 1971-02-18 1972-09-28
JPS4822487U (en) * 1971-07-20 1973-03-14

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6067906U (en) * 1983-10-14 1985-05-14 株式会社　日立工機原町 Variable material feeding speed mechanism on automatic planing machine
JPH029922Y2 (en) * 1983-10-14 1990-03-13

Also Published As

Publication number Publication date
JPS644435B2 (en) 1989-01-25

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