JPS56141747A - Holding device for brush on electric rotary machine - Google Patents

Holding device for brush on electric rotary machine

Info

Publication number
JPS56141747A
JPS56141747A JP4277180A JP4277180A JPS56141747A JP S56141747 A JPS56141747 A JP S56141747A JP 4277180 A JP4277180 A JP 4277180A JP 4277180 A JP4277180 A JP 4277180A JP S56141747 A JPS56141747 A JP S56141747A
Authority
JP
Japan
Prior art keywords
brush
electromagnet
force
supporting pin
spring
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
JP4277180A
Other languages
Japanese (ja)
Inventor
Hideki Aizawa
Ikuo Oishi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4277180A priority Critical patent/JPS56141747A/en
Publication of JPS56141747A publication Critical patent/JPS56141747A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/38—Brush holders
    • H01R39/381—Brush holders characterised by the application of pressure to brush

Abstract

PURPOSE:To keep the sparking threshold voltage on the low speed and high power region to the same level as to that on the high speed as well as to perform an excellent commutation on all over the area by a method wherein a device, with which the depressing force of the brush by means of a spring is reduced as the current running on the brush becomes greater. CONSTITUTION:When depressing the brush 1 by attaching a plate spring 12 at the outer end of a spiral spring 11, the inner end of the spiral spring 11 is fixed at a rotatable supporting pin 10. A magnetic metal plate 17 is installed by protruding an arm 16 from said supporting pin 10 and is arranged facing to an electromagnet 6. The springs 11 and 12 are so arranged that their depressing force becomes smaller when the attracting force of the electromagnet 6 becomes larger through the intermediary of the supporting pin 10 and the arm 16. Then, the brush current is run on the exciting coil of the electromagnet 6 and the deppressing force of the springs 11 and 12 becomes smaller when the brush current becomes larger.
JP4277180A 1980-04-03 1980-04-03 Holding device for brush on electric rotary machine Pending JPS56141747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4277180A JPS56141747A (en) 1980-04-03 1980-04-03 Holding device for brush on electric rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4277180A JPS56141747A (en) 1980-04-03 1980-04-03 Holding device for brush on electric rotary machine

Publications (1)

Publication Number Publication Date
JPS56141747A true JPS56141747A (en) 1981-11-05

Family

ID=12645229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4277180A Pending JPS56141747A (en) 1980-04-03 1980-04-03 Holding device for brush on electric rotary machine

Country Status (1)

Country Link
JP (1) JPS56141747A (en)

Similar Documents

Publication Publication Date Title
ES2048361T3 (en) ELECTRIC POWER SUPPLY DEVICE FOR BICYCLES.
DK333585A (en) YEAR POWER ELECTROMAGNET, NECESSARY FOR AN ELECTRIC SWITCHING DEVICE
US5648706A (en) Electric brake for commutated motor
JPS56141747A (en) Holding device for brush on electric rotary machine
RU2047252C1 (en) Brush gear
US1721177A (en) Electromagnetic relay
FR2744559B1 (en) SINGLE-PHASE ROTARY ELECTROMAGNETIC ACTUATOR WITH MAGNETIC SPRING AND ELECTRIC VALVE USING SUCH AN ACTUATOR
SU765901A1 (en) Magnetically-operated contact based change-over switch
RU1808610C (en) Magnetic plate
US2570531A (en) Magnetically operated motor
JPS5768652A (en) Self-starting revolving-field type synchronous motor
JPS5284407A (en) Brush device
JPS5343316A (en) Operation control system for electric car
SU831486A1 (en) Apparatus for electric spark strengthening
SU116499A1 (en) Switch Pulse Generator
SU1754198A1 (en) Vibratory liquid mixer
JPH0129290B2 (en)
JPS5534865A (en) Device for controlling rotating speed of welding generator
JPS5367975A (en) Device for detecting breakage of lamp
JPS57104971A (en) Cleaning device
FR2309031A1 (en) AC electric circuit breaker - has electromagnet with solid rectangular cross-section core and armature connected to rod and rocker to actuate contacts
GB710200A (en) Improvements in or relating to selectors for tele-communication installations
JPS51127937A (en) Noncontact point ignition device
JPS53127612A (en) Small direct current motor
JPS55120352A (en) Electromagnet device with motor