JPS5720414A - Electromagnetic device - Google Patents

Electromagnetic device

Info

Publication number
JPS5720414A
JPS5720414A JP9531180A JP9531180A JPS5720414A JP S5720414 A JPS5720414 A JP S5720414A JP 9531180 A JP9531180 A JP 9531180A JP 9531180 A JP9531180 A JP 9531180A JP S5720414 A JPS5720414 A JP S5720414A
Authority
JP
Japan
Prior art keywords
hole
yoke
small
plunger
forming
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
JP9531180A
Other languages
Japanese (ja)
Other versions
JPS6315724B2 (en
Inventor
Shigeru Oyokota
Hiroshi Ueda
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP9531180A priority Critical patent/JPS5720414A/en
Publication of JPS5720414A publication Critical patent/JPS5720414A/en
Publication of JPS6315724B2 publication Critical patent/JPS6315724B2/ja
Granted 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • 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
    • H01F7/1607—Armatures entering the winding

Landscapes

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

Abstract

PURPOSE:To obtain a uniform attracting force even at a long stroke in an electromagnetic device by forming a hole of small diameter at one end of a yoke forming a solenoid in a cavity, forming an opening at the other end of the yoke, and forming the shape of a plunger surrounded by electromagnetic coil inserted thereinto the size thereof is large at the opening and small toward the hole. CONSTITUTION:A cylindrical yoke 10 having a cavity is reduced at one end with a hole 10a of small diameter and is opened at the other end with a large-diameter hole 10b. Then, a plunger 12 to be inserted into the yoke 10 is also formed at the large hole 10b with a large diameter part 12b to block the hole and formed at the end of the small-diameter hole 12a to be inserted into the yoke 10 with slightly smaller than the hole 10a of the yoke 10. Then, an electromagnetic coil 14 surrounding the small-diameter part 12a of the plunger 12 is formed in the vicinity of the hole 10a side as a solenoid. Thus, a current flowed to the coil 14 is controlled to telescope the plunger 12 at the small diameter part 12a into the hole 10a, thereby varying the magnetic flux in the closed magnetic path to equalize the attracting force.
JP9531180A 1980-07-11 1980-07-11 Electromagnetic device Granted JPS5720414A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9531180A JPS5720414A (en) 1980-07-11 1980-07-11 Electromagnetic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9531180A JPS5720414A (en) 1980-07-11 1980-07-11 Electromagnetic device

Publications (2)

Publication Number Publication Date
JPS5720414A true JPS5720414A (en) 1982-02-02
JPS6315724B2 JPS6315724B2 (en) 1988-04-06

Family

ID=14134205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9531180A Granted JPS5720414A (en) 1980-07-11 1980-07-11 Electromagnetic device

Country Status (1)

Country Link
JP (1) JPS5720414A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542497A1 (en) * 1983-03-10 1984-09-14 Singer Co HYBRID LINEAR CONTROL DEVICE
JPS6424804U (en) * 1987-08-05 1989-02-10
FR2650537A1 (en) * 1989-08-04 1991-02-08 Bando Chemical Ind Franking device
EP1729309A3 (en) * 2005-06-03 2009-03-11 Delphi Technologies, Inc. Magnetic circuit design for linear actuator with small coil diameter
US8143984B2 (en) * 2009-01-20 2012-03-27 Denso Corporation Linear solenoid
JP2013196049A (en) * 2012-03-15 2013-09-30 Fuji Electric Co Ltd Commodity dispensing device for vending machine
JP2014067960A (en) * 2012-09-27 2014-04-17 Keihin Corp Electromagnetic actuator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50122665A (en) * 1974-03-12 1975-09-26
JPS5138733U (en) * 1974-09-17 1976-03-23

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50122665A (en) * 1974-03-12 1975-09-26
JPS5138733U (en) * 1974-09-17 1976-03-23

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542497A1 (en) * 1983-03-10 1984-09-14 Singer Co HYBRID LINEAR CONTROL DEVICE
JPS6424804U (en) * 1987-08-05 1989-02-10
FR2650537A1 (en) * 1989-08-04 1991-02-08 Bando Chemical Ind Franking device
EP1729309A3 (en) * 2005-06-03 2009-03-11 Delphi Technologies, Inc. Magnetic circuit design for linear actuator with small coil diameter
US8143984B2 (en) * 2009-01-20 2012-03-27 Denso Corporation Linear solenoid
JP2013196049A (en) * 2012-03-15 2013-09-30 Fuji Electric Co Ltd Commodity dispensing device for vending machine
JP2014067960A (en) * 2012-09-27 2014-04-17 Keihin Corp Electromagnetic actuator

Also Published As

Publication number Publication date
JPS6315724B2 (en) 1988-04-06

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