JPS55108712A - Dc electromagnet - Google Patents

Dc electromagnet

Info

Publication number
JPS55108712A
JPS55108712A JP1636479A JP1636479A JPS55108712A JP S55108712 A JPS55108712 A JP S55108712A JP 1636479 A JP1636479 A JP 1636479A JP 1636479 A JP1636479 A JP 1636479A JP S55108712 A JPS55108712 A JP S55108712A
Authority
JP
Japan
Prior art keywords
iron core
yoke
plunger
magnetic
eddy currents
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
JP1636479A
Other languages
Japanese (ja)
Inventor
Katsuyoshi Iguchi
Tsuyoshi Sasaki
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.)
Nissin Electric Co Ltd
Original Assignee
Nissin Electric Co 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 Nissin Electric Co Ltd filed Critical Nissin Electric Co Ltd
Priority to JP1636479A priority Critical patent/JPS55108712A/en
Publication of JPS55108712A publication Critical patent/JPS55108712A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0614—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of electromagnets or fixed armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F2007/1676—Means for avoiding or reducing eddy currents in the magnetic circuit, e.g. radial slots

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnets (AREA)

Abstract

PURPOSE:To reduce eddy currents produced in an iron core and diffuse a magnet inside the iron core in a short time by inserting a cylindrical iron core in a ring coil and providing radial notches on the iron core in the direction parallel to the magnetic flux passing inside the iron core. CONSTITUTION:Below magletic yoke 4' is provided cylindrical plunger 7', which is to become a movable iron core, free to move up and down inside ring coil 1. Plunger rod 9 fixed at the lower center of plunger 7 is fitted into holes 10, 11 of yoke 2 and magnetic yoke 4', and it is connected to the operation unit at the upper part of yoke 2. In this case, four radial notches 13, 14 are provided on the magnetic yoke 4' and the plunger 7' in parallel to the magnetic flux passing inside the iron core. By this, the eddy currents that would flow in the circumferential direction of the magnetic yoke 4' and the plunger 7' are prevented.
JP1636479A 1979-02-13 1979-02-13 Dc electromagnet Pending JPS55108712A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1636479A JPS55108712A (en) 1979-02-13 1979-02-13 Dc electromagnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1636479A JPS55108712A (en) 1979-02-13 1979-02-13 Dc electromagnet

Publications (1)

Publication Number Publication Date
JPS55108712A true JPS55108712A (en) 1980-08-21

Family

ID=11914264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1636479A Pending JPS55108712A (en) 1979-02-13 1979-02-13 Dc electromagnet

Country Status (1)

Country Link
JP (1) JPS55108712A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176553U (en) * 1983-05-13 1984-11-26 日立工機株式会社 Printing hammer drive device
JPS6316406U (en) * 1986-07-17 1988-02-03
WO1991006109A1 (en) * 1989-10-10 1991-05-02 Robert Bosch Gmbh Electromagnet
WO2000074086A1 (en) * 1999-05-29 2000-12-07 Daimlerchrysler Ag Actuator for electromagnetic valve control
GB2455403B (en) * 2007-12-04 2012-12-26 Caterpillar Inc Solenoid assembly having slotted stator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59176553U (en) * 1983-05-13 1984-11-26 日立工機株式会社 Printing hammer drive device
JPS6316406U (en) * 1986-07-17 1988-02-03
WO1991006109A1 (en) * 1989-10-10 1991-05-02 Robert Bosch Gmbh Electromagnet
WO2000074086A1 (en) * 1999-05-29 2000-12-07 Daimlerchrysler Ag Actuator for electromagnetic valve control
GB2455403B (en) * 2007-12-04 2012-12-26 Caterpillar Inc Solenoid assembly having slotted stator

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