JPS57107013A - Ac electromagnet - Google Patents

Ac electromagnet

Info

Publication number
JPS57107013A
JPS57107013A JP18679280A JP18679280A JPS57107013A JP S57107013 A JPS57107013 A JP S57107013A JP 18679280 A JP18679280 A JP 18679280A JP 18679280 A JP18679280 A JP 18679280A JP S57107013 A JPS57107013 A JP S57107013A
Authority
JP
Japan
Prior art keywords
iron core
magnetic circuit
core frame
armature
built
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
JP18679280A
Other languages
Japanese (ja)
Inventor
Tsutomu Taniguchi
Yoshihide Bando
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP18679280A priority Critical patent/JPS57107013A/en
Publication of JPS57107013A publication Critical patent/JPS57107013A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H01F7/10—Electromagnets; Actuators including electromagnets with armatures specially adapted for alternating current

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

PURPOSE:To obtain a less-acoustic noises AC electromagnet by a method wherein an opening is built at a part of a magnetic circuit and here a permanent magnet is inserted, and the magnetic circuit opposing this is equipped with a metal ring surrounding this. CONSTITUTION:An iron core 20 is adhered to a horizontal arm 21a of an L shaped iron core frame 21, and a hinged armature 22 is mounted on the top of the iron core frame 21 to constitute a magnetic circuit 23 with iron core 20, iron core frame 21 and armature 22. Next, an opening 24 is built in the iron core 20 along the circuit 23, and a permanent magnet 25 is buried here to increase a magnetic resistance, and an exciting coil 26 is wound via a spool 27 around the iron core 20 including this. Further, a vertical part 21b of iron core frame 21 through which the magnetic circuit 23 is passing is surrounded with a metal ring 28, and a recovery spring 29 is installed between the extension end of armature 22 and the extension end of iron core frame 21. With this construction, generation of acoustic noises can be avoided, and also a manufacturing cost can be decreased because there is no work such as calking.
JP18679280A 1980-12-25 1980-12-25 Ac electromagnet Pending JPS57107013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18679280A JPS57107013A (en) 1980-12-25 1980-12-25 Ac electromagnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18679280A JPS57107013A (en) 1980-12-25 1980-12-25 Ac electromagnet

Publications (1)

Publication Number Publication Date
JPS57107013A true JPS57107013A (en) 1982-07-03

Family

ID=16194661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18679280A Pending JPS57107013A (en) 1980-12-25 1980-12-25 Ac electromagnet

Country Status (1)

Country Link
JP (1) JPS57107013A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57152736U (en) * 1981-03-20 1982-09-25
EP1193724A3 (en) * 2000-09-18 2002-06-19 Isuzu Motors Limited Magnet consisting of an electromagnet and a permanent magnet, and eddy current retarder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57152736U (en) * 1981-03-20 1982-09-25
JPS6344930Y2 (en) * 1981-03-20 1988-11-22
EP1193724A3 (en) * 2000-09-18 2002-06-19 Isuzu Motors Limited Magnet consisting of an electromagnet and a permanent magnet, and eddy current retarder
US6756870B2 (en) 2000-09-18 2004-06-29 Isuzu Motors Limited Composite magnet of electromagnet and permanent magnet, and eddy current retarder

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