EP0380693A4 - Plunger type electromagnet - Google Patents

Plunger type electromagnet

Info

Publication number
EP0380693A4
EP0380693A4 EP19890908518 EP89908518A EP0380693A4 EP 0380693 A4 EP0380693 A4 EP 0380693A4 EP 19890908518 EP19890908518 EP 19890908518 EP 89908518 A EP89908518 A EP 89908518A EP 0380693 A4 EP0380693 A4 EP 0380693A4
Authority
EP
European Patent Office
Prior art keywords
attraction
plunger
electromagnet
shape
magnetization
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
EP19890908518
Other versions
EP0380693B1 (en
EP0380693A1 (en
Inventor
Tokio Uetsuhara
Yuichi Ando
Kenji Iio
Kenichiro Kinoshita
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.)
Mitsubishi Mining and Cement Co Ltd
Original Assignee
Mitsubishi Mining and Cement 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
Priority claimed from JP19758188A external-priority patent/JPH0246707A/en
Priority claimed from JP11272888U external-priority patent/JPH0235408U/ja
Priority claimed from JP22635188A external-priority patent/JPH0276206A/en
Priority claimed from JP28681688A external-priority patent/JPH02133906A/en
Priority claimed from JP63319631A external-priority patent/JPH02165606A/en
Priority claimed from JP114989A external-priority patent/JPH02181904A/en
Priority claimed from JP443489U external-priority patent/JPH0296706U/ja
Application filed by Mitsubishi Mining and Cement Co Ltd filed Critical Mitsubishi Mining and Cement Co Ltd
Publication of EP0380693A1 publication Critical patent/EP0380693A1/en
Publication of EP0380693A4 publication Critical patent/EP0380693A4/en
Publication of EP0380693B1 publication Critical patent/EP0380693B1/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F7/13—Electromagnets; Actuators including electromagnets with armatures characterised by pulling-force characteristics
    • 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
    • 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
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • 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
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • 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
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets

Landscapes

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

Abstract

An attraction blade plate is disposed on a plunger of a plunger type electromagnet to improve the shape of the plunger and the shape of a fixed core, or a cylinder equipped with a single flange and made of a magnetic material is fitted to the axial-direction end portion of a coil bobbin. According to each technical means, the change rate of permeance of a magnetic path at the time of attraction can be made great and high sensitivity of the electromagnet can be accomplished. Attraction retention force is controlled by adjusting the area of the contact surface between the fixed core and a movable core. A permanent magnet is shaped in a toroidal shape and the direction of magnetization is formed in the direction of the thickness of the toroidal shape. Accordingly, magnetization of the permanent magnet becomes easier and the number of components can be reduced. In this manner, a compact and light-weight electromagnet can be mass-produced.
EP89908518A 1988-08-08 1989-07-25 Plunger type electromagnet Expired - Lifetime EP0380693B1 (en)

Applications Claiming Priority (15)

Application Number Priority Date Filing Date Title
JP19758188A JPH0246707A (en) 1988-08-08 1988-08-08 Electromagnet
JP197581/88 1988-08-08
JP112728/88U 1988-08-30
JP11272888U JPH0235408U (en) 1988-08-30 1988-08-30
JP226351/88 1988-09-12
JP22635188A JPH0276206A (en) 1988-09-12 1988-09-12 Plunger-type electromagnet iron core
JP286816/88 1988-11-15
JP28681688A JPH02133906A (en) 1988-11-15 1988-11-15 Plunger type electromagnet
JP319631/88 1988-12-20
JP63319631A JPH02165606A (en) 1988-12-20 1988-12-20 Plunger type electromagnet
JP114989A JPH02181904A (en) 1989-01-09 1989-01-09 Electromagnet iron core
JP1149/89 1989-01-09
JP443489U JPH0296706U (en) 1989-01-20 1989-01-20
JP4434/89U 1989-01-20
PCT/JP1989/000742 WO1990001780A1 (en) 1988-08-08 1989-07-25 Plunger type electromagnet

Publications (3)

Publication Number Publication Date
EP0380693A1 EP0380693A1 (en) 1990-08-08
EP0380693A4 true EP0380693A4 (en) 1991-01-16
EP0380693B1 EP0380693B1 (en) 1994-06-08

Family

ID=27563124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908518A Expired - Lifetime EP0380693B1 (en) 1988-08-08 1989-07-25 Plunger type electromagnet

Country Status (3)

Country Link
EP (1) EP0380693B1 (en)
DE (1) DE68915998T2 (en)
WO (1) WO1990001780A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT396716B (en) * 1992-04-07 1993-11-25 Avl Verbrennungskraft Messtech ELECTROMAGNETIC ACTUATOR, ESPECIALLY FOR A VALVE
EP0643872B1 (en) * 1993-03-31 1997-06-18 SCHROTT, Harald Bistable electromagnet, in particular magnetic valve
DE4332960A1 (en) * 1993-03-31 1994-10-06 Schrott Harald Bistable electromagnet, especially solenoid valve
DE59404663D1 (en) 1993-09-16 1998-01-08 Binder Magnete DC solenoid
DE4334031C2 (en) * 1993-10-06 1998-02-12 Kuhnke Gmbh Kg H Method for operating a bistable solenoid and solenoid for performing the method
DE19608729C1 (en) * 1996-03-06 1997-07-03 Siemens Ag Electromagnetic type switching device
WO1999014769A1 (en) 1997-09-18 1999-03-25 Holec Holland N.V. Electromagnetic actuator
NL1007072C2 (en) * 1997-09-18 1999-03-22 Holec Holland Nv Electromagnetic actuator for moving contact into switched on or off state with contact actuating rod displaceable in longitudinal direction between two positions, on and off
FR2792108B1 (en) 1999-04-12 2001-05-04 Schneider Electric Sa DIRECT CURRENT ELECTROMAGNET
FR2792109B1 (en) * 1999-04-12 2001-06-01 Schneider Electric Sa ELECTROMAGNET WITH SIMPLIFIED MAGNETIC CIRCUIT
US20010030589A1 (en) * 2000-02-29 2001-10-18 Dahlgren Derek A. Three position solenoid
JP4066040B2 (en) * 2001-01-18 2008-03-26 株式会社日立製作所 Electromagnet and operation mechanism of switchgear using the same
CN1234135C (en) * 2001-01-18 2005-12-28 株式会社日立制作所 Electromagnetic and operating mechanism of switch using said electromagnet
FR2896615A1 (en) * 2006-01-20 2007-07-27 Areva T & D Sa MAGNETIC ACTUATOR WITH PERMANENT MAGNET WITH REDUCED VOLUME
DE102010048808A1 (en) 2010-10-20 2012-04-26 Eto Magnetic Gmbh Electromagnetic actuator
DE102011003169A1 (en) * 2011-01-26 2012-07-26 Continental Teves Ag & Co. Ohg magnetic valve
CN104051123B (en) * 2014-06-09 2016-03-23 常熟开关制造有限公司(原常熟开关厂） Electromagnet structure
JP2017108612A (en) * 2015-11-09 2017-06-15 フスコ オートモーティブ ホールディングス エル・エル・シーＨＵＳＣＯ Ａｕｔｏｍｏｔｉｖｅ Ｈｏｌｄｉｎｇｓ ＬＬＣ Systems and methods for electromagnetic actuator
JP2017169433A (en) 2016-03-17 2017-09-21 フスコ オートモーティブ ホールディングス エル・エル・シーＨＵＳＣＯ Ａｕｔｏｍｏｔｉｖｅ Ｈｏｌｄｉｎｇｓ ＬＬＣ Systems and methods for electromagnetic actuator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223802A (en) * 1963-06-14 1965-12-14 Schulz Tool & Mfg Co Solenoid having a two-piece armature
US4016965A (en) * 1975-08-19 1977-04-12 Ncr Corporation Matrix print head and solenoid driver
GB2099223A (en) * 1981-04-22 1982-12-01 Hosiden Electronics Co Self-sustaining solenoid
US4470030A (en) * 1983-05-18 1984-09-04 Ledex, Inc. Trip solenoid
DE3318034A1 (en) * 1983-05-18 1984-11-22 Walter Dipl.-Ing. 4030 Ratingen Krome Electrical repulsion or attraction magnet

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4841207Y1 (en) * 1970-09-29 1973-12-03
JPS4941239U (en) * 1972-07-15 1974-04-11
JPS5930289Y2 (en) * 1980-11-13 1984-08-29 焼結金属工業株式会社 Solenoid for solenoid valve
JPS57138113A (en) * 1981-02-20 1982-08-26 Futaba Denjiki Kk Core for solenoid, etc.
JPS5872815U (en) * 1981-11-12 1983-05-17 株式会社広業社通信機器製作所 solenoid
JPS5889804A (en) * 1981-11-24 1983-05-28 Matsushita Electric Ind Co Ltd Self-hold type solenoid
JPS5929003U (en) * 1982-08-16 1984-02-23 星電器製造株式会社 Self-holding push-pull solenoid
JPS59177904A (en) * 1983-03-28 1984-10-08 Matsushita Electric Works Ltd Solenoid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223802A (en) * 1963-06-14 1965-12-14 Schulz Tool & Mfg Co Solenoid having a two-piece armature
US4016965A (en) * 1975-08-19 1977-04-12 Ncr Corporation Matrix print head and solenoid driver
GB2099223A (en) * 1981-04-22 1982-12-01 Hosiden Electronics Co Self-sustaining solenoid
US4470030A (en) * 1983-05-18 1984-09-04 Ledex, Inc. Trip solenoid
DE3318034A1 (en) * 1983-05-18 1984-11-22 Walter Dipl.-Ing. 4030 Ratingen Krome Electrical repulsion or attraction magnet

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 186 (E-193)(1331) 16 August 1983, & JP-A-58 089804 (MATSUSHITA DENKI SANGYO K.K.) *
See also references of WO9001780A1 *

Also Published As

Publication number Publication date
EP0380693B1 (en) 1994-06-08
EP0380693A1 (en) 1990-08-08
DE68915998D1 (en) 1994-07-14
DE68915998T2 (en) 1994-12-15
WO1990001780A1 (en) 1990-02-22

Similar Documents

Publication Publication Date Title
EP0380693A4 (en) Plunger type electromagnet
US5268662A (en) Plunger type electromagnet
US4049985A (en) Damping device for a stepper motor
US20060208841A1 (en) Electromagnet and actuating mechanism for switch device, using thereof
FR2308178A1 (en) Magnetically operated actuator employing permanent and electro-magnets - is monostable or multistable and moves slide valve which may be made of magnetic
GB2109165A (en) Trip solenoid
CA2043161A1 (en) Voice coil type actuator
EP0232897A3 (en) Electromagnet device
ES2025925A6 (en) Magnetic valve with short stroke armature - pole cure and magnetic armature cooperating via protrusion and corresp. recess
JPS56125984A (en) Magnetically floating movable base
JPS5583453A (en) Moving coil type linear motor
JPS5623717A (en) Polarized electromagnet
FR2344948A1 (en) Release mechanism for contact breaker - has permanent magnet lock and electromagnet to release armature and striking pin
JPS5651809A (en) Polarized electromagnet
JPS643178U (en)
JPS6488524A (en) Electromagnetic actuator for driving shutter
GB1232978A (en) Electro-magnetic actuators
ES8102916A1 (en) Electromagnet actuator
JPS5776804A (en) Polarized solenoid
KR900000629A (en) Solenoid valve
GB1311842A (en) Electromagnetic actuator
JPS5623716A (en) Electromagnetic device utilizing attracting and repelling forces in combination of permanent magnet and electromagnet
JPS5643703A (en) Electromagnet device
JPS6427038A (en) Voice coil type actuator
JPS55130105A (en) Solenoid

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19900807

A4 Supplementary search report drawn up and despatched

Effective date: 19901126

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19921029

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 68915998

Country of ref document: DE

Date of ref document: 19940714

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990809

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990817

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990827

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000725

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000725

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010330

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010501